| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| James Smart | 38990 | 75.44% | 328 | 82.21% |
| James Bottomley | 7408 | 14.33% | 2 | 0.50% |
| Justin Tee | 2334 | 4.52% | 28 | 7.02% |
| Gaurav Srivastava | 2019 | 3.91% | 2 | 0.50% |
| Jamie Wellnitz | 538 | 1.04% | 4 | 1.00% |
| Dick Kennedy | 185 | 0.36% | 8 | 2.01% |
| Andy Shevchenko | 48 | 0.09% | 1 | 0.25% |
| Kees Cook | 36 | 0.07% | 1 | 0.25% |
| Guilherme G. Piccoli | 19 | 0.04% | 1 | 0.25% |
| Adrian Bunk | 19 | 0.04% | 1 | 0.25% |
| Baoyou Xie | 17 | 0.03% | 1 | 0.25% |
| Sudip Mukherjee | 15 | 0.03% | 1 | 0.25% |
| Johannes Thumshirn | 10 | 0.02% | 1 | 0.25% |
| Colin Ian King | 9 | 0.02% | 1 | 0.25% |
| Xiyu Yang | 9 | 0.02% | 1 | 0.25% |
| Lee Jones | 4 | 0.01% | 1 | 0.25% |
| Julia Lawall | 3 | 0.01% | 1 | 0.25% |
| Shyam Saini | 2 | 0.00% | 1 | 0.25% |
| Dan Carpenter | 2 | 0.00% | 1 | 0.25% |
| Linus Torvalds (pre-git) | 2 | 0.00% | 1 | 0.25% |
| Linas Vepstas | 2 | 0.00% | 1 | 0.25% |
| Gustavo A. R. Silva | 2 | 0.00% | 1 | 0.25% |
| Muneendra Kumar M | 2 | 0.00% | 1 | 0.25% |
| André Goddard Rosa | 1 | 0.00% | 1 | 0.25% |
| Bhaskar Chowdhury | 1 | 0.00% | 1 | 0.25% |
| Lucas De Marchi | 1 | 0.00% | 1 | 0.25% |
| Peter Zijlstra | 1 | 0.00% | 1 | 0.25% |
| Bo Liu | 1 | 0.00% | 1 | 0.25% |
| Björn Helgaas | 1 | 0.00% | 1 | 0.25% |
| Linus Torvalds | 1 | 0.00% | 1 | 0.25% |
| Daniel Mack | 1 | 0.00% | 1 | 0.25% |
| Punit Vara | 1 | 0.00% | 1 | 0.25% |
| Ales Novak | 1 | 0.00% | 1 | 0.25% |
| Total | 51685 | 399 |
/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term * * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * * Copyright (C) 2004-2016 Emulex. All rights reserved. * * EMULEX and SLI are trademarks of Emulex. * * www.broadcom.com * * Portions Copyright (C) 2004-2005 Christoph Hellwig * * * * This program is free software; you can redistribute it and/or * * modify it under the terms of version 2 of the GNU General * * Public License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful. * * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * * TO BE LEGALLY INVALID. See the GNU General Public License for * * more details, a copy of which can be found in the file COPYING * * included with this package. * *******************************************************************/ /* See Fibre Channel protocol T11 FC-LS for details */ #include <linux/blkdev.h> #include <linux/pci.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <scsi/scsi.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport_fc.h> #include <uapi/scsi/fc/fc_fs.h> #include <uapi/scsi/fc/fc_els.h> #include "lpfc_hw4.h" #include "lpfc_hw.h" #include "lpfc_sli.h" #include "lpfc_sli4.h" #include "lpfc_nl.h" #include "lpfc_disc.h" #include "lpfc_scsi.h" #include "lpfc.h" #include "lpfc_logmsg.h" #include "lpfc_crtn.h" #include "lpfc_vport.h" #include "lpfc_debugfs.h" static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *); static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *); static void lpfc_fabric_abort_vport(struct lpfc_vport *vport); static int lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry); static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb); static void lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb); static void lpfc_cmpl_els_uvem(struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *); static int lpfc_max_els_tries = 3; static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport); static void lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max); static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid); /** * lpfc_els_chk_latt - Check host link attention event for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine checks whether there is an outstanding host link * attention event during the discovery process with the @vport. It is done * by reading the HBA's Host Attention (HA) register. If there is any host * link attention events during this @vport's discovery process, the @vport * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall * be issued if the link state is not already in host link cleared state, * and a return code shall indicate whether the host link attention event * had happened. * * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport * state in LPFC_VPORT_READY, the request for checking host link attention * event will be ignored and a return code shall indicate no host link * attention event had happened. * * Return codes * 0 - no host link attention event happened * 1 - host link attention event happened **/ int lpfc_els_chk_latt(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; uint32_t ha_copy; if (vport->port_state >= LPFC_VPORT_READY || phba->link_state == LPFC_LINK_DOWN || phba->sli_rev > LPFC_SLI_REV3) return 0; /* Read the HBA Host Attention Register */ if (lpfc_readl(phba->HAregaddr, &ha_copy)) return 1; if (!(ha_copy & HA_LATT)) return 0; /* Pending Link Event during Discovery */ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0237 Pending Link Event during " "Discovery: State x%x\n", phba->pport->port_state); /* CLEAR_LA should re-enable link attention events and * we should then immediately take a LATT event. The * LATT processing should call lpfc_linkdown() which * will cleanup any left over in-progress discovery * events. */ set_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); if (phba->link_state != LPFC_CLEAR_LA) lpfc_issue_clear_la(phba, vport); return 1; } static bool lpfc_is_els_acc_rsp(struct lpfc_dmabuf *buf) { struct fc_els_ls_acc *rsp = buf->virt; if (rsp && rsp->la_cmd == ELS_LS_ACC) return true; return false; } /** * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure * @vport: pointer to a host virtual N_Port data structure. * @expect_rsp: flag indicating whether response is expected. * @cmd_size: size of the ELS command. * @retry: number of retries to the command when it fails. * @ndlp: pointer to a node-list data structure. * @did: destination identifier. * @elscmd: the ELS command code. * * This routine is used for allocating a lpfc-IOCB data structure from * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters * passed into the routine for discovery state machine to issue an Extended * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation * and preparation routine that is used by all the discovery state machine * routines and the ELS command-specific fields will be later set up by * the individual discovery machine routines after calling this routine * allocating and preparing a generic IOCB data structure. It fills in the * Buffer Descriptor Entries (BDEs), allocates buffers for both command * payload and response payload (if expected). The reference count on the * ndlp is incremented by 1 and the reference to the ndlp is put into * ndlp of the IOCB data structure for this IOCB to hold the ndlp * reference for the command's callback function to access later. * * Return code * Pointer to the newly allocated/prepared els iocb data structure * NULL - when els iocb data structure allocation/preparation failed **/ struct lpfc_iocbq * lpfc_prep_els_iocb(struct lpfc_vport *vport, u8 expect_rsp, u16 cmd_size, u8 retry, struct lpfc_nodelist *ndlp, u32 did, u32 elscmd) { struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; struct lpfc_dmabuf *pcmd, *prsp, *pbuflist, *bmp; struct ulp_bde64_le *bpl; u32 timeout = 0; if (!lpfc_is_link_up(phba)) return NULL; /* Allocate buffer for command iocb */ elsiocb = lpfc_sli_get_iocbq(phba); if (!elsiocb) return NULL; /* * If this command is for fabric controller and HBA running * in FIP mode send FLOGI, FDISC and LOGO as FIP frames. */ if (did == Fabric_DID && test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) && (elscmd == ELS_CMD_FLOGI || elscmd == ELS_CMD_FDISC || elscmd == ELS_CMD_LOGO)) switch (elscmd) { case ELS_CMD_FLOGI: elsiocb->cmd_flag |= ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT) & LPFC_FIP_ELS_ID_MASK); break; case ELS_CMD_FDISC: elsiocb->cmd_flag |= ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT) & LPFC_FIP_ELS_ID_MASK); break; case ELS_CMD_LOGO: elsiocb->cmd_flag |= ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT) & LPFC_FIP_ELS_ID_MASK); break; } else elsiocb->cmd_flag &= ~LPFC_FIP_ELS_ID_MASK; /* fill in BDEs for command */ /* Allocate buffer for command payload */ pcmd = kmalloc(sizeof(*pcmd), GFP_KERNEL); if (pcmd) pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys); if (!pcmd || !pcmd->virt) goto els_iocb_free_pcmb_exit; INIT_LIST_HEAD(&pcmd->list); /* Allocate buffer for response payload */ if (expect_rsp) { prsp = kmalloc(sizeof(*prsp), GFP_KERNEL); if (prsp) prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &prsp->phys); if (!prsp || !prsp->virt) goto els_iocb_free_prsp_exit; INIT_LIST_HEAD(&prsp->list); } else { prsp = NULL; } /* Allocate buffer for Buffer ptr list */ pbuflist = kmalloc(sizeof(*pbuflist), GFP_KERNEL); if (pbuflist) pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pbuflist->phys); if (!pbuflist || !pbuflist->virt) goto els_iocb_free_pbuf_exit; INIT_LIST_HEAD(&pbuflist->list); if (expect_rsp) { switch (elscmd) { case ELS_CMD_FLOGI: timeout = FF_DEF_RATOV * 2; break; case ELS_CMD_LOGO: timeout = phba->fc_ratov; break; default: timeout = phba->fc_ratov * 2; } /* Fill SGE for the num bde count */ elsiocb->num_bdes = 2; } if (phba->sli_rev == LPFC_SLI_REV4) bmp = pcmd; else bmp = pbuflist; lpfc_sli_prep_els_req_rsp(phba, elsiocb, vport, bmp, cmd_size, did, elscmd, timeout, expect_rsp); bpl = (struct ulp_bde64_le *)pbuflist->virt; bpl->addr_low = cpu_to_le32(putPaddrLow(pcmd->phys)); bpl->addr_high = cpu_to_le32(putPaddrHigh(pcmd->phys)); bpl->type_size = cpu_to_le32(cmd_size); bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64); if (expect_rsp) { bpl++; bpl->addr_low = cpu_to_le32(putPaddrLow(prsp->phys)); bpl->addr_high = cpu_to_le32(putPaddrHigh(prsp->phys)); bpl->type_size = cpu_to_le32(FCELSSIZE); bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64); } elsiocb->cmd_dmabuf = pcmd; elsiocb->bpl_dmabuf = pbuflist; elsiocb->retry = retry; elsiocb->vport = vport; elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT; if (prsp) list_add(&prsp->list, &pcmd->list); if (expect_rsp) { /* Xmit ELS command <elsCmd> to remote NPORT <did> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0116 Xmit ELS command x%x to remote " "NPORT x%x I/O tag: x%x, port state:x%x " "rpi x%x fc_flag:x%lx\n", elscmd, did, elsiocb->iotag, vport->port_state, ndlp->nlp_rpi, vport->fc_flag); } else { /* Xmit ELS response <elsCmd> to remote NPORT <did> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0117 Xmit ELS response x%x to remote " "NPORT x%x I/O tag: x%x, size: x%x " "port_state x%x rpi x%x fc_flag x%lx\n", elscmd, ndlp->nlp_DID, elsiocb->iotag, cmd_size, vport->port_state, ndlp->nlp_rpi, vport->fc_flag); } return elsiocb; els_iocb_free_pbuf_exit: if (expect_rsp) lpfc_mbuf_free(phba, prsp->virt, prsp->phys); kfree(pbuflist); els_iocb_free_prsp_exit: lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys); kfree(prsp); els_iocb_free_pcmb_exit: kfree(pcmd); lpfc_sli_release_iocbq(phba, elsiocb); return NULL; } /** * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine issues a fabric registration login for a @vport. An * active ndlp node with Fabric_DID must already exist for this @vport. * The routine invokes two mailbox commands to carry out fabric registration * login through the HBA firmware: the first mailbox command requests the * HBA to perform link configuration for the @vport; and the second mailbox * command requests the HBA to perform the actual fabric registration login * with the @vport. * * Return code * 0 - successfully issued fabric registration login for @vport * -ENXIO -- failed to issue fabric registration login for @vport **/ int lpfc_issue_fabric_reglogin(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; LPFC_MBOXQ_t *mbox; struct lpfc_nodelist *ndlp; struct serv_parm *sp; int rc; int err = 0; sp = &phba->fc_fabparam; ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) { err = 1; goto fail; } mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) { err = 2; goto fail; } vport->port_state = LPFC_FABRIC_CFG_LINK; lpfc_config_link(phba, mbox); mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; mbox->vport = vport; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { err = 3; goto fail_free_mbox; } mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) { err = 4; goto fail; } rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, ndlp->nlp_rpi); if (rc) { err = 5; goto fail_free_mbox; } mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login; mbox->vport = vport; /* increment the reference count on ndlp to hold reference * for the callback routine. */ mbox->ctx_ndlp = lpfc_nlp_get(ndlp); if (!mbox->ctx_ndlp) { err = 6; goto fail_free_mbox; } rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { err = 7; goto fail_issue_reg_login; } return 0; fail_issue_reg_login: /* decrement the reference count on ndlp just incremented * for the failed mbox command. */ lpfc_nlp_put(ndlp); fail_free_mbox: lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); fail: lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0249 Cannot issue Register Fabric login: Err %d\n", err); return -ENXIO; } /** * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login * @vport: pointer to a host virtual N_Port data structure. * * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for * the @vport. This mailbox command is necessary for SLI4 port only. * * Return code * 0 - successfully issued REG_VFI for @vport * A failure code otherwise. **/ int lpfc_issue_reg_vfi(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; LPFC_MBOXQ_t *mboxq = NULL; struct lpfc_nodelist *ndlp; struct lpfc_dmabuf *dmabuf = NULL; int rc = 0; /* move forward in case of SLI4 FC port loopback test and pt2pt mode */ if ((phba->sli_rev == LPFC_SLI_REV4) && !(phba->link_flag & LS_LOOPBACK_MODE) && !test_bit(FC_PT2PT, &vport->fc_flag)) { ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) { rc = -ENODEV; goto fail; } } mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { rc = -ENOMEM; goto fail; } /* Supply CSP's only if we are fabric connect or pt-to-pt connect */ if (test_bit(FC_FABRIC, &vport->fc_flag) || test_bit(FC_PT2PT, &vport->fc_flag)) { rc = lpfc_mbox_rsrc_prep(phba, mboxq); if (rc) { rc = -ENOMEM; goto fail_mbox; } dmabuf = mboxq->ctx_buf; memcpy(dmabuf->virt, &phba->fc_fabparam, sizeof(struct serv_parm)); } vport->port_state = LPFC_FABRIC_CFG_LINK; if (dmabuf) { lpfc_reg_vfi(mboxq, vport, dmabuf->phys); /* lpfc_reg_vfi memsets the mailbox. Restore the ctx_buf. */ mboxq->ctx_buf = dmabuf; } else { lpfc_reg_vfi(mboxq, vport, 0); } mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi; mboxq->vport = vport; rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { rc = -ENXIO; goto fail_mbox; } return 0; fail_mbox: lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED); fail: lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0289 Issue Register VFI failed: Err %d\n", rc); return rc; } /** * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login * @vport: pointer to a host virtual N_Port data structure. * * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for * the @vport. This mailbox command is necessary for SLI4 port only. * * Return code * 0 - successfully issued REG_VFI for @vport * A failure code otherwise. **/ int lpfc_issue_unreg_vfi(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; LPFC_MBOXQ_t *mboxq; int rc; mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "2556 UNREG_VFI mbox allocation failed" "HBA state x%x\n", phba->pport->port_state); return -ENOMEM; } lpfc_unreg_vfi(mboxq, vport); mboxq->vport = vport; mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl; rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "2557 UNREG_VFI issue mbox failed rc x%x " "HBA state x%x\n", rc, phba->pport->port_state); mempool_free(mboxq, phba->mbox_mem_pool); return -EIO; } clear_bit(FC_VFI_REGISTERED, &vport->fc_flag); return 0; } /** * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean. * @vport: pointer to a host virtual N_Port data structure. * @sp: pointer to service parameter data structure. * * This routine is called from FLOGI/FDISC completion handler functions. * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric * node nodename is changed in the completion service parameter else return * 0. This function also set flag in the vport data structure to delay * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric * node nodename is changed in the completion service parameter. * * Return code * 0 - FCID and Fabric Nodename and Fabric portname is not changed. * 1 - FCID or Fabric Nodename or Fabric portname is changed. * **/ static uint8_t lpfc_check_clean_addr_bit(struct lpfc_vport *vport, struct serv_parm *sp) { struct lpfc_hba *phba = vport->phba; uint8_t fabric_param_changed = 0; if ((vport->fc_prevDID != vport->fc_myDID) || memcmp(&vport->fabric_portname, &sp->portName, sizeof(struct lpfc_name)) || memcmp(&vport->fabric_nodename, &sp->nodeName, sizeof(struct lpfc_name)) || (vport->vport_flag & FAWWPN_PARAM_CHG)) { fabric_param_changed = 1; vport->vport_flag &= ~FAWWPN_PARAM_CHG; } /* * Word 1 Bit 31 in common service parameter is overloaded. * Word 1 Bit 31 in FLOGI request is multiple NPort request * Word 1 Bit 31 in FLOGI response is clean address bit * * If fabric parameter is changed and clean address bit is * cleared delay nport discovery if * - vport->fc_prevDID != 0 (not initial discovery) OR * - lpfc_delay_discovery module parameter is set. */ if (fabric_param_changed && !sp->cmn.clean_address_bit && (vport->fc_prevDID || phba->cfg_delay_discovery)) set_bit(FC_DISC_DELAYED, &vport->fc_flag); return fabric_param_changed; } /** * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @sp: pointer to service parameter data structure. * @ulp_word4: command response value * * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback * function to handle the completion of a Fabric Login (FLOGI) into a fabric * port in a fabric topology. It properly sets up the parameters to the @ndlp * from the IOCB response. It also check the newly assigned N_Port ID to the * @vport against the previously assigned N_Port ID. If it is different from * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine * is invoked on all the remaining nodes with the @vport to unregister the * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin() * is invoked to register login to the fabric. * * Return code * 0 - Success (currently, always return 0) **/ static int lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, struct serv_parm *sp, uint32_t ulp_word4) { struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *np; struct lpfc_nodelist *next_np; uint8_t fabric_param_changed; set_bit(FC_FABRIC, &vport->fc_flag); phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov); if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000; phba->fc_edtovResol = sp->cmn.edtovResolution; phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000; if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) set_bit(FC_PUBLIC_LOOP, &vport->fc_flag); vport->fc_myDID = ulp_word4 & Mask_DID; memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name)); memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name)); ndlp->nlp_class_sup = 0; if (sp->cls1.classValid) ndlp->nlp_class_sup |= FC_COS_CLASS1; if (sp->cls2.classValid) ndlp->nlp_class_sup |= FC_COS_CLASS2; if (sp->cls3.classValid) ndlp->nlp_class_sup |= FC_COS_CLASS3; if (sp->cls4.classValid) ndlp->nlp_class_sup |= FC_COS_CLASS4; ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb; fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp); if (fabric_param_changed) { /* Reset FDMI attribute masks based on config parameter */ if (phba->cfg_enable_SmartSAN || (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) { /* Setup appropriate attribute masks */ vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR; if (phba->cfg_enable_SmartSAN) vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR; else vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR; } else { vport->fdmi_hba_mask = 0; vport->fdmi_port_mask = 0; } } memcpy(&vport->fabric_portname, &sp->portName, sizeof(struct lpfc_name)); memcpy(&vport->fabric_nodename, &sp->nodeName, sizeof(struct lpfc_name)); memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { if (sp->cmn.response_multiple_NPort) { lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_VPORT, "1816 FLOGI NPIV supported, " "response data 0x%x\n", sp->cmn.response_multiple_NPort); spin_lock_irq(&phba->hbalock); phba->link_flag |= LS_NPIV_FAB_SUPPORTED; spin_unlock_irq(&phba->hbalock); } else { /* Because we asked f/w for NPIV it still expects us to call reg_vnpid at least for the physical host */ lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_VPORT, "1817 Fabric does not support NPIV " "- configuring single port mode.\n"); spin_lock_irq(&phba->hbalock); phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; spin_unlock_irq(&phba->hbalock); } } /* * For FC we need to do some special processing because of the SLI * Port's default settings of the Common Service Parameters. */ if ((phba->sli_rev == LPFC_SLI_REV4) && (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) { /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ if (fabric_param_changed) lpfc_unregister_fcf_prep(phba); /* This should just update the VFI CSPs*/ if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) lpfc_issue_reg_vfi(vport); } if (fabric_param_changed && !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) { /* If our NportID changed, we need to ensure all * remaining NPORTs get unreg_login'ed. */ list_for_each_entry_safe(np, next_np, &vport->fc_nodes, nlp_listp) { if ((np->nlp_state != NLP_STE_NPR_NODE) || !(np->nlp_flag & NLP_NPR_ADISC)) continue; spin_lock_irq(&np->lock); np->nlp_flag &= ~NLP_NPR_ADISC; spin_unlock_irq(&np->lock); lpfc_unreg_rpi(vport, np); } lpfc_cleanup_pending_mbox(vport); if (phba->sli_rev == LPFC_SLI_REV4) { lpfc_sli4_unreg_all_rpis(vport); lpfc_mbx_unreg_vpi(vport); set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); } /* * For SLI3 and SLI4, the VPI needs to be reregistered in * response to this fabric parameter change event. */ set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); } else if ((phba->sli_rev == LPFC_SLI_REV4) && !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) { /* * Driver needs to re-reg VPI in order for f/w * to update the MAC address. */ lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); lpfc_register_new_vport(phba, vport, ndlp); return 0; } if (phba->sli_rev < LPFC_SLI_REV4) { lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE); if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED && test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) lpfc_register_new_vport(phba, vport, ndlp); else lpfc_issue_fabric_reglogin(vport); } else { ndlp->nlp_type |= NLP_FABRIC; lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); if ((!test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) && (vport->vpi_state & LPFC_VPI_REGISTERED)) { lpfc_start_fdiscs(phba); lpfc_do_scr_ns_plogi(phba, vport); } else if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) lpfc_issue_init_vpi(vport); else { lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3135 Need register VFI: (x%x/%x)\n", vport->fc_prevDID, vport->fc_myDID); lpfc_issue_reg_vfi(vport); } } return 0; } /** * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @sp: pointer to service parameter data structure. * * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback * function to handle the completion of a Fabric Login (FLOGI) into an N_Port * in a point-to-point topology. First, the @vport's N_Port Name is compared * with the received N_Port Name: if the @vport's N_Port Name is greater than * the received N_Port Name lexicographically, this node shall assign local * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise, * this node shall just wait for the remote node to issue PLOGI and assign * N_Port IDs. * * Return code * 0 - Success * -ENXIO - Fail **/ static int lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, struct serv_parm *sp) { struct lpfc_hba *phba = vport->phba; LPFC_MBOXQ_t *mbox; int rc; clear_bit(FC_FABRIC, &vport->fc_flag); clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag); set_bit(FC_PT2PT, &vport->fc_flag); /* If we are pt2pt with another NPort, force NPIV off! */ phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) { lpfc_unregister_fcf_prep(phba); clear_bit(FC_VFI_REGISTERED, &vport->fc_flag); phba->fc_topology_changed = 0; } rc = memcmp(&vport->fc_portname, &sp->portName, sizeof(vport->fc_portname)); if (rc >= 0) { /* This side will initiate the PLOGI */ set_bit(FC_PT2PT_PLOGI, &vport->fc_flag); /* * N_Port ID cannot be 0, set our Id to LocalID * the other side will be RemoteID. */ /* not equal */ if (rc) vport->fc_myDID = PT2PT_LocalID; /* If not registered with a transport, decrement ndlp reference * count indicating that ndlp can be safely released when other * references are removed. */ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) lpfc_nlp_put(ndlp); ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID); if (!ndlp) { /* * Cannot find existing Fabric ndlp, so allocate a * new one */ ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID); if (!ndlp) goto fail; } memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name)); memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name)); /* Set state will put ndlp onto node list if not already done */ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(&ndlp->lock); mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) goto fail; lpfc_config_link(phba, mbox); mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; mbox->vport = vport; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { mempool_free(mbox, phba->mbox_mem_pool); goto fail; } } else { /* This side will wait for the PLOGI. If not registered with * a transport, decrement node reference count indicating that * ndlp can be released when other references are removed. */ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) lpfc_nlp_put(ndlp); /* Start discovery - this should just do CLEAR_LA */ lpfc_disc_start(vport); } return 0; fail: return -ENXIO; } /** * lpfc_cmpl_els_flogi - Completion callback function for flogi * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the top-level completion callback function for issuing * a Fabric Login (FLOGI) command. If the response IOCB reported error, * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If * retry has been made (either immediately or delayed with lpfc_els_retry() * returning 1), the command IOCB will be released and function returned. * If the retry attempt has been given up (possibly reach the maximum * number of retries), one additional decrement of ndlp reference shall be * invoked before going out after releasing the command IOCB. This will * actually release the remote node (Note, lpfc_els_free_iocb() will also * invoke one decrement of ndlp reference count). If no error reported in * the IOCB status, the command Port ID field is used to determine whether * this is a point-to-point topology or a fabric topology: if the Port ID * field is assigned, it is a fabric topology; otherwise, it is a * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the * specific topology completion conditions. **/ static void lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct lpfc_nodelist *ndlp = cmdiocb->ndlp; IOCB_t *irsp; struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp; struct serv_parm *sp; uint16_t fcf_index; int rc; u32 ulp_status, ulp_word4, tmo; bool flogi_in_retry = false; /* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) { /* One additional decrement on node reference count to * trigger the release of the node */ if (!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) lpfc_nlp_put(ndlp); goto out; } ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); if (phba->sli_rev == LPFC_SLI_REV4) { tmo = get_wqe_tmo(cmdiocb); } else { irsp = &rspiocb->iocb; tmo = irsp->ulpTimeout; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "FLOGI cmpl: status:x%x/x%x state:x%x", ulp_status, ulp_word4, vport->port_state); if (ulp_status) { /* * In case of FIP mode, perform roundrobin FCF failover * due to new FCF discovery */ if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) && (phba->fcf.fcf_flag & FCF_DISCOVERY)) { if (phba->link_state < LPFC_LINK_UP) goto stop_rr_fcf_flogi; if ((phba->fcoe_cvl_eventtag_attn == phba->fcoe_cvl_eventtag) && (ulp_status == IOSTAT_LOCAL_REJECT) && ((ulp_word4 & IOERR_PARAM_MASK) == IOERR_SLI_ABORTED)) goto stop_rr_fcf_flogi; else phba->fcoe_cvl_eventtag_attn = phba->fcoe_cvl_eventtag; lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, "2611 FLOGI failed on FCF (x%x), " "status:x%x/x%x, tmo:x%x, perform " "roundrobin FCF failover\n", phba->fcf.current_rec.fcf_indx, ulp_status, ulp_word4, tmo); lpfc_sli4_set_fcf_flogi_fail(phba, phba->fcf.current_rec.fcf_indx); fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index); if (rc) goto out; } stop_rr_fcf_flogi: /* FLOGI failure */ if (!(ulp_status == IOSTAT_LOCAL_REJECT && ((ulp_word4 & IOERR_PARAM_MASK) == IOERR_LOOP_OPEN_FAILURE))) lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "2858 FLOGI failure Status:x%x/x%x TMO" ":x%x Data x%lx x%x\n", ulp_status, ulp_word4, tmo, phba->hba_flag, phba->fcf.fcf_flag); /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { /* Address a timing race with dev_loss. If dev_loss * is active on this FPort node, put the initial ref * count back to stop premature node release actions. */ lpfc_check_nlp_post_devloss(vport, ndlp); flogi_in_retry = true; goto out; } /* The FLOGI will not be retried. If the FPort node is not * registered with the SCSI transport, remove the initial * reference to trigger node release. */ if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS) && !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) lpfc_nlp_put(ndlp); lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, "0150 FLOGI failure Status:x%x/x%x " "xri x%x TMO:x%x refcnt %d\n", ulp_status, ulp_word4, cmdiocb->sli4_xritag, tmo, kref_read(&ndlp->kref)); /* If this is not a loop open failure, bail out */ if (!(ulp_status == IOSTAT_LOCAL_REJECT && ((ulp_word4 & IOERR_PARAM_MASK) == IOERR_LOOP_OPEN_FAILURE))) { /* FLOGI failure */ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0100 FLOGI failure Status:x%x/x%x " "TMO:x%x\n", ulp_status, ulp_word4, tmo); goto flogifail; } /* FLOGI failed, so there is no fabric */ clear_bit(FC_FABRIC, &vport->fc_flag); clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag); clear_bit(FC_PT2PT_NO_NVME, &vport->fc_flag); /* If private loop, then allow max outstanding els to be * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no * alpa map would take too long otherwise. */ if (phba->alpa_map[0] == 0) vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS; if ((phba->sli_rev == LPFC_SLI_REV4) && (!test_bit(FC_VFI_REGISTERED, &vport->fc_flag) || (vport->fc_prevDID != vport->fc_myDID) || phba->fc_topology_changed)) { if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) { if (phba->fc_topology_changed) { lpfc_unregister_fcf_prep(phba); clear_bit(FC_VFI_REGISTERED, &vport->fc_flag); phba->fc_topology_changed = 0; } else { lpfc_sli4_unreg_all_rpis(vport); } } /* Do not register VFI if the driver aborted FLOGI */ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4)) lpfc_issue_reg_vfi(vport); goto out; } goto flogifail; } clear_bit(FC_VPORT_CVL_RCVD, &vport->fc_flag); clear_bit(FC_VPORT_LOGO_RCVD, &vport->fc_flag); /* * The FLOGI succeeded. Sync the data for the CPU before * accessing it. */ prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); if (!prsp) goto out; if (!lpfc_is_els_acc_rsp(prsp)) goto out; sp = prsp->virt + sizeof(uint32_t); /* FLOGI completes successfully */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0101 FLOGI completes successfully, I/O tag:x%x " "xri x%x Data: x%x x%x x%x x%x x%x x%lx x%x %d\n", cmdiocb->iotag, cmdiocb->sli4_xritag, ulp_word4, sp->cmn.e_d_tov, sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution, vport->port_state, vport->fc_flag, sp->cmn.priority_tagging, kref_read(&ndlp->kref)); /* reinitialize the VMID datastructure before returning */ if (lpfc_is_vmid_enabled(phba)) lpfc_reinit_vmid(vport); if (sp->cmn.priority_tagging) vport->phba->pport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA | LPFC_VMID_TYPE_PRIO); /* * Address a timing race with dev_loss. If dev_loss is active on * this FPort node, put the initial ref count back to stop premature * node release actions. */ lpfc_check_nlp_post_devloss(vport, ndlp); if (vport->port_state == LPFC_FLOGI) { /* * If Common Service Parameters indicate Nport * we are point to point, if Fport we are Fabric. */ if (sp->cmn.fPort) rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, ulp_word4); else if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp); else { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "2831 FLOGI response with cleared Fabric " "bit fcf_index 0x%x " "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x " "Fabric Name " "%02x%02x%02x%02x%02x%02x%02x%02x\n", phba->fcf.current_rec.fcf_indx, phba->fcf.current_rec.switch_name[0], phba->fcf.current_rec.switch_name[1], phba->fcf.current_rec.switch_name[2], phba->fcf.current_rec.switch_name[3], phba->fcf.current_rec.switch_name[4], phba->fcf.current_rec.switch_name[5], phba->fcf.current_rec.switch_name[6], phba->fcf.current_rec.switch_name[7], phba->fcf.current_rec.fabric_name[0], phba->fcf.current_rec.fabric_name[1], phba->fcf.current_rec.fabric_name[2], phba->fcf.current_rec.fabric_name[3], phba->fcf.current_rec.fabric_name[4], phba->fcf.current_rec.fabric_name[5], phba->fcf.current_rec.fabric_name[6], phba->fcf.current_rec.fabric_name[7]); lpfc_nlp_put(ndlp); spin_lock_irq(&phba->hbalock); phba->fcf.fcf_flag &= ~FCF_DISCOVERY; spin_unlock_irq(&phba->hbalock); clear_bit(FCF_RR_INPROG, &phba->hba_flag); clear_bit(HBA_DEVLOSS_TMO, &phba->hba_flag); phba->fcf.fcf_redisc_attempted = 0; /* reset */ goto out; } if (!rc) { /* Mark the FCF discovery process done */ if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag)) lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP | LOG_ELS, "2769 FLOGI to FCF (x%x) " "completed successfully\n", phba->fcf.current_rec.fcf_indx); spin_lock_irq(&phba->hbalock); phba->fcf.fcf_flag &= ~FCF_DISCOVERY; spin_unlock_irq(&phba->hbalock); clear_bit(FCF_RR_INPROG, &phba->hba_flag); clear_bit(HBA_DEVLOSS_TMO, &phba->hba_flag); phba->fcf.fcf_redisc_attempted = 0; /* reset */ goto out; } } else if (vport->port_state > LPFC_FLOGI && test_bit(FC_PT2PT, &vport->fc_flag)) { /* * In a p2p topology, it is possible that discovery has * already progressed, and this completion can be ignored. * Recheck the indicated topology. */ if (!sp->cmn.fPort) goto out; } flogifail: spin_lock_irq(&phba->hbalock); phba->fcf.fcf_flag &= ~FCF_DISCOVERY; spin_unlock_irq(&phba->hbalock); if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4)) { /* FLOGI failed, so just use loop map to make discovery list */ lpfc_disc_list_loopmap(vport); /* Start discovery */ lpfc_disc_start(vport); } else if (((ulp_status != IOSTAT_LOCAL_REJECT) || (((ulp_word4 & IOERR_PARAM_MASK) != IOERR_SLI_ABORTED) && ((ulp_word4 & IOERR_PARAM_MASK) != IOERR_SLI_DOWN))) && (phba->link_state != LPFC_CLEAR_LA)) { /* If FLOGI failed enable link interrupt. */ lpfc_issue_clear_la(phba, vport); } out: if (!flogi_in_retry) clear_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag); lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); } /** * lpfc_cmpl_els_link_down - Completion callback function for ELS command * aborted during a link down * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * */ static void lpfc_cmpl_els_link_down(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { uint32_t *pcmd; uint32_t cmd; u32 ulp_status, ulp_word4; pcmd = (uint32_t *)cmdiocb->cmd_dmabuf->virt; cmd = *pcmd; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "6445 ELS completes after LINK_DOWN: " " Status %x/%x cmd x%x flg x%x\n", ulp_status, ulp_word4, cmd, cmdiocb->cmd_flag); if (cmdiocb->cmd_flag & LPFC_IO_FABRIC) { cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC; atomic_dec(&phba->fabric_iocb_count); } lpfc_els_free_iocb(phba, cmdiocb); } /** * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine issues a Fabric Login (FLOGI) Request ELS command * for a @vport. The initiator service parameters are put into the payload * of the FLOGI Request IOCB and the top-level callback function pointer * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback * function field. The lpfc_issue_fabric_iocb routine is invoked to send * out FLOGI ELS command with one outstanding fabric IOCB at a time. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the FLOGI ELS command. * * Return code * 0 - successfully issued flogi iocb for @vport * 1 - failed to issue flogi iocb for @vport **/ static int lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry) { struct lpfc_hba *phba = vport->phba; struct serv_parm *sp; union lpfc_wqe128 *wqe = NULL; IOCB_t *icmd = NULL; struct lpfc_iocbq *elsiocb; struct lpfc_iocbq defer_flogi_acc; u8 *pcmd, ct; uint16_t cmdsize; uint32_t tmo, did; int rc; cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_FLOGI); if (!elsiocb) return 1; wqe = &elsiocb->wqe; pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; icmd = &elsiocb->iocb; /* For FLOGI request, remainder of payload is service parameters */ *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI; pcmd += sizeof(uint32_t); memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm)); sp = (struct serv_parm *) pcmd; /* Setup CSPs accordingly for Fabric */ sp->cmn.e_d_tov = 0; sp->cmn.w2.r_a_tov = 0; sp->cmn.virtual_fabric_support = 0; sp->cls1.classValid = 0; if (sp->cmn.fcphLow < FC_PH3) sp->cmn.fcphLow = FC_PH3; if (sp->cmn.fcphHigh < FC_PH3) sp->cmn.fcphHigh = FC_PH3; /* Determine if switch supports priority tagging */ if (phba->cfg_vmid_priority_tagging) { sp->cmn.priority_tagging = 1; /* lpfc_vmid_host_uuid is combination of wwpn and wwnn */ if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0, sizeof(vport->lpfc_vmid_host_uuid))) { memcpy(vport->lpfc_vmid_host_uuid, phba->wwpn, sizeof(phba->wwpn)); memcpy(&vport->lpfc_vmid_host_uuid[8], phba->wwnn, sizeof(phba->wwnn)); } } if (phba->sli_rev == LPFC_SLI_REV4) { if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) == LPFC_SLI_INTF_IF_TYPE_0) { /* FLOGI needs to be 3 for WQE FCFI */ ct = SLI4_CT_FCFI; bf_set(wqe_ct, &wqe->els_req.wqe_com, ct); /* Set the fcfi to the fcfi we registered with */ bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com, phba->fcf.fcfi); } /* Can't do SLI4 class2 without support sequence coalescing */ sp->cls2.classValid = 0; sp->cls2.seqDelivery = 0; } else { /* Historical, setting sequential-delivery bit for SLI3 */ sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0; sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0; if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { sp->cmn.request_multiple_Nport = 1; /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */ icmd->ulpCt_h = 1; icmd->ulpCt_l = 0; } else { sp->cmn.request_multiple_Nport = 0; } if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) { icmd->un.elsreq64.myID = 0; icmd->un.elsreq64.fl = 1; } } tmo = phba->fc_ratov; phba->fc_ratov = LPFC_DISC_FLOGI_TMO; lpfc_set_disctmo(vport); phba->fc_ratov = tmo; phba->fc_stat.elsXmitFLOGI++; elsiocb->cmd_cmpl = lpfc_cmpl_els_flogi; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue FLOGI: opt:x%x", phba->sli3_options, 0, 0); elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } /* Avoid race with FLOGI completion and hba_flags. */ set_bit(HBA_FLOGI_ISSUED, &phba->hba_flag); set_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag); rc = lpfc_issue_fabric_iocb(phba, elsiocb); if (rc == IOCB_ERROR) { clear_bit(HBA_FLOGI_ISSUED, &phba->hba_flag); clear_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag); lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } /* Clear external loopback plug detected flag */ phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; /* Check for a deferred FLOGI ACC condition */ if (phba->defer_flogi_acc_flag) { /* lookup ndlp for received FLOGI */ ndlp = lpfc_findnode_did(vport, 0); if (!ndlp) return 0; did = vport->fc_myDID; vport->fc_myDID = Fabric_DID; memset(&defer_flogi_acc, 0, sizeof(struct lpfc_iocbq)); if (phba->sli_rev == LPFC_SLI_REV4) { bf_set(wqe_ctxt_tag, &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com, phba->defer_flogi_acc_rx_id); bf_set(wqe_rcvoxid, &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com, phba->defer_flogi_acc_ox_id); } else { icmd = &defer_flogi_acc.iocb; icmd->ulpContext = phba->defer_flogi_acc_rx_id; icmd->unsli3.rcvsli3.ox_id = phba->defer_flogi_acc_ox_id; } lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3354 Xmit deferred FLOGI ACC: rx_id: x%x," " ox_id: x%x, hba_flag x%lx\n", phba->defer_flogi_acc_rx_id, phba->defer_flogi_acc_ox_id, phba->hba_flag); /* Send deferred FLOGI ACC */ lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, &defer_flogi_acc, ndlp, NULL); phba->defer_flogi_acc_flag = false; vport->fc_myDID = did; /* Decrement ndlp reference count to indicate the node can be * released when other references are removed. */ lpfc_nlp_put(ndlp); } return 0; } /** * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs * @phba: pointer to lpfc hba data structure. * * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq * list and issues an abort IOCB commond on each outstanding IOCB that * contains a active Fabric_DID ndlp. Note that this function is to issue * the abort IOCB command on all the outstanding IOCBs, thus when this * function returns, it does not guarantee all the IOCBs are actually aborted. * * Return code * 0 - Successfully issued abort iocb on all outstanding flogis (Always 0) **/ int lpfc_els_abort_flogi(struct lpfc_hba *phba) { struct lpfc_sli_ring *pring; struct lpfc_iocbq *iocb, *next_iocb; struct lpfc_nodelist *ndlp; u32 ulp_command; /* Abort outstanding I/O on NPort <nlp_DID> */ lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY, "0201 Abort outstanding I/O on NPort x%x\n", Fabric_DID); pring = lpfc_phba_elsring(phba); if (unlikely(!pring)) return -EIO; /* * Check the txcmplq for an iocb that matches the nport the driver is * searching for. */ spin_lock_irq(&phba->hbalock); list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { ulp_command = get_job_cmnd(phba, iocb); if (ulp_command == CMD_ELS_REQUEST64_CR) { ndlp = iocb->ndlp; if (ndlp && ndlp->nlp_DID == Fabric_DID) { if (test_bit(FC_PT2PT, &phba->pport->fc_flag) && !test_bit(FC_PT2PT_PLOGI, &phba->pport->fc_flag)) iocb->fabric_cmd_cmpl = lpfc_ignore_els_cmpl; lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL); } } } /* Make sure HBA is alive */ lpfc_issue_hb_tmo(phba); spin_unlock_irq(&phba->hbalock); return 0; } /** * lpfc_initial_flogi - Issue an initial fabric login for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine issues an initial Fabric Login (FLOGI) for the @vport * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and * put it into the @vport's ndlp list. If an inactive ndlp found on the list, * it will just be enabled and made active. The lpfc_issue_els_flogi() routine * is then invoked with the @vport and the ndlp to perform the FLOGI for the * @vport. * * Return code * 0 - failed to issue initial flogi for @vport * 1 - successfully issued initial flogi for @vport **/ int lpfc_initial_flogi(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp; vport->port_state = LPFC_FLOGI; lpfc_set_disctmo(vport); /* First look for the Fabric ndlp */ ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) { /* Cannot find existing Fabric ndlp, so allocate a new one */ ndlp = lpfc_nlp_init(vport, Fabric_DID); if (!ndlp) return 0; /* Set the node type */ ndlp->nlp_type |= NLP_FABRIC; /* Put ndlp onto node list */ lpfc_enqueue_node(vport, ndlp); } /* Reset the Fabric flag, topology change may have happened */ clear_bit(FC_FABRIC, &vport->fc_flag); if (lpfc_issue_els_flogi(vport, ndlp, 0)) { /* A node reference should be retained while registered with a * transport or dev-loss-evt work is pending. * Otherwise, decrement node reference to trigger release. */ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) && !(ndlp->nlp_flag & NLP_IN_DEV_LOSS)) lpfc_nlp_put(ndlp); return 0; } return 1; } /** * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine issues an initial Fabric Discover (FDISC) for the @vport * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and * put it into the @vport's ndlp list. If an inactive ndlp found on the list, * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine * is then invoked with the @vport and the ndlp to perform the FDISC for the * @vport. * * Return code * 0 - failed to issue initial fdisc for @vport * 1 - successfully issued initial fdisc for @vport **/ int lpfc_initial_fdisc(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp; /* First look for the Fabric ndlp */ ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) { /* Cannot find existing Fabric ndlp, so allocate a new one */ ndlp = lpfc_nlp_init(vport, Fabric_DID); if (!ndlp) return 0; /* NPIV is only supported in Fabrics. */ ndlp->nlp_type |= NLP_FABRIC; /* Put ndlp onto node list */ lpfc_enqueue_node(vport, ndlp); } if (lpfc_issue_els_fdisc(vport, ndlp, 0)) { /* A node reference should be retained while registered with a * transport or dev-loss-evt work is pending. * Otherwise, decrement node reference to trigger release. */ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) && !(ndlp->nlp_flag & NLP_IN_DEV_LOSS)) lpfc_nlp_put(ndlp); return 0; } return 1; } /** * lpfc_more_plogi - Check and issue remaining plogis for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine checks whether there are more remaining Port Logins * (PLOGI) to be issued for the @vport. If so, it will invoke the routine * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes * to issue ELS PLOGIs up to the configured discover threads with the * @vport (@vport->cfg_discovery_threads). The function also decrement * the @vport's num_disc_node by 1 if it is not already 0. **/ void lpfc_more_plogi(struct lpfc_vport *vport) { if (vport->num_disc_nodes) vport->num_disc_nodes--; /* Continue discovery with <num_disc_nodes> PLOGIs to go */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0232 Continue discovery with %d PLOGIs to go " "Data: x%x x%lx x%x\n", vport->num_disc_nodes, atomic_read(&vport->fc_plogi_cnt), vport->fc_flag, vport->port_state); /* Check to see if there are more PLOGIs to be sent */ if (test_bit(FC_NLP_MORE, &vport->fc_flag)) /* go thru NPR nodes and issue any remaining ELS PLOGIs */ lpfc_els_disc_plogi(vport); return; } /** * lpfc_plogi_confirm_nport - Confirm plogi wwpn matches stored ndlp * @phba: pointer to lpfc hba data structure. * @prsp: pointer to response IOCB payload. * @ndlp: pointer to a node-list data structure. * * This routine checks and indicates whether the WWPN of an N_Port, retrieved * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt. * The following cases are considered N_Port confirmed: * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but * it does not have WWPN assigned either. If the WWPN is confirmed, the * pointer to the @ndlp will be returned. If the WWPN is not confirmed: * 1) if there is a node on vport list other than the @ndlp with the same * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked * on that node to release the RPI associated with the node; 2) if there is * no node found on vport list with the same WWPN of the N_Port PLOGI logged * into, a new node shall be allocated (or activated). In either case, the * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall * be released and the new_ndlp shall be put on to the vport node list and * its pointer returned as the confirmed node. * * Note that before the @ndlp got "released", the keepDID from not-matching * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID * of the @ndlp. This is because the release of @ndlp is actually to put it * into an inactive state on the vport node list and the vport node list * management algorithm does not allow two node with a same DID. * * Return code * pointer to the PLOGI N_Port @ndlp **/ static struct lpfc_nodelist * lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, struct lpfc_nodelist *ndlp) { struct lpfc_vport *vport = ndlp->vport; struct lpfc_nodelist *new_ndlp; struct serv_parm *sp; uint8_t name[sizeof(struct lpfc_name)]; uint32_t keepDID = 0, keep_nlp_flag = 0; int rc; uint32_t keep_new_nlp_flag = 0; uint16_t keep_nlp_state; u32 keep_nlp_fc4_type = 0; struct lpfc_nvme_rport *keep_nrport = NULL; unsigned long *active_rrqs_xri_bitmap = NULL; sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t)); memset(name, 0, sizeof(struct lpfc_name)); /* Now we find out if the NPort we are logging into, matches the WWPN * we have for that ndlp. If not, we have some work to do. */ new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName); /* return immediately if the WWPN matches ndlp */ if (new_ndlp == ndlp) return ndlp; if (phba->sli_rev == LPFC_SLI_REV4) { active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool, GFP_KERNEL); if (active_rrqs_xri_bitmap) memset(active_rrqs_xri_bitmap, 0, phba->cfg_rrq_xri_bitmap_sz); } lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE, "3178 PLOGI confirm: ndlp x%x x%x x%x: " "new_ndlp x%x x%x x%x\n", ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_fc4_type, (new_ndlp ? new_ndlp->nlp_DID : 0), (new_ndlp ? new_ndlp->nlp_flag : 0), (new_ndlp ? new_ndlp->nlp_fc4_type : 0)); if (!new_ndlp) { rc = memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)); if (!rc) { if (active_rrqs_xri_bitmap) mempool_free(active_rrqs_xri_bitmap, phba->active_rrq_pool); return ndlp; } new_ndlp = lpfc_nlp_init(vport, ndlp->nlp_DID); if (!new_ndlp) { if (active_rrqs_xri_bitmap) mempool_free(active_rrqs_xri_bitmap, phba->active_rrq_pool); return ndlp; } } else { if (phba->sli_rev == LPFC_SLI_REV4 && active_rrqs_xri_bitmap) memcpy(active_rrqs_xri_bitmap, new_ndlp->active_rrqs_xri_bitmap, phba->cfg_rrq_xri_bitmap_sz); /* * Unregister from backend if not done yet. Could have been * skipped due to ADISC */ lpfc_nlp_unreg_node(vport, new_ndlp); } keepDID = new_ndlp->nlp_DID; /* At this point in this routine, we know new_ndlp will be * returned. however, any previous GID_FTs that were done * would have updated nlp_fc4_type in ndlp, so we must ensure * new_ndlp has the right value. */ if (test_bit(FC_FABRIC, &vport->fc_flag)) { keep_nlp_fc4_type = new_ndlp->nlp_fc4_type; new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type; } lpfc_unreg_rpi(vport, new_ndlp); new_ndlp->nlp_DID = ndlp->nlp_DID; new_ndlp->nlp_prev_state = ndlp->nlp_prev_state; if (phba->sli_rev == LPFC_SLI_REV4) memcpy(new_ndlp->active_rrqs_xri_bitmap, ndlp->active_rrqs_xri_bitmap, phba->cfg_rrq_xri_bitmap_sz); /* Lock both ndlps */ spin_lock_irq(&ndlp->lock); spin_lock_irq(&new_ndlp->lock); keep_new_nlp_flag = new_ndlp->nlp_flag; keep_nlp_flag = ndlp->nlp_flag; new_ndlp->nlp_flag = ndlp->nlp_flag; /* if new_ndlp had NLP_UNREG_INP set, keep it */ if (keep_new_nlp_flag & NLP_UNREG_INP) new_ndlp->nlp_flag |= NLP_UNREG_INP; else new_ndlp->nlp_flag &= ~NLP_UNREG_INP; /* if new_ndlp had NLP_RPI_REGISTERED set, keep it */ if (keep_new_nlp_flag & NLP_RPI_REGISTERED) new_ndlp->nlp_flag |= NLP_RPI_REGISTERED; else new_ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; /* * Retain the DROPPED flag. This will take care of the init * refcount when affecting the state change */ if (keep_new_nlp_flag & NLP_DROPPED) new_ndlp->nlp_flag |= NLP_DROPPED; else new_ndlp->nlp_flag &= ~NLP_DROPPED; ndlp->nlp_flag = keep_new_nlp_flag; /* if ndlp had NLP_UNREG_INP set, keep it */ if (keep_nlp_flag & NLP_UNREG_INP) ndlp->nlp_flag |= NLP_UNREG_INP; else ndlp->nlp_flag &= ~NLP_UNREG_INP; /* if ndlp had NLP_RPI_REGISTERED set, keep it */ if (keep_nlp_flag & NLP_RPI_REGISTERED) ndlp->nlp_flag |= NLP_RPI_REGISTERED; else ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; /* * Retain the DROPPED flag. This will take care of the init * refcount when affecting the state change */ if (keep_nlp_flag & NLP_DROPPED) ndlp->nlp_flag |= NLP_DROPPED; else ndlp->nlp_flag &= ~NLP_DROPPED; spin_unlock_irq(&new_ndlp->lock); spin_unlock_irq(&ndlp->lock); /* Set nlp_states accordingly */ keep_nlp_state = new_ndlp->nlp_state; lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state); /* interchange the nvme remoteport structs */ keep_nrport = new_ndlp->nrport; new_ndlp->nrport = ndlp->nrport; /* Move this back to NPR state */ if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) { /* The ndlp doesn't have a portname yet, but does have an * NPort ID. The new_ndlp portname matches the Rport's * portname. Reinstantiate the new_ndlp and reset the ndlp. */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3179 PLOGI confirm NEW: %x %x\n", new_ndlp->nlp_DID, keepDID); /* Two ndlps cannot have the same did on the nodelist. * The KeepDID and keep_nlp_fc4_type need to be swapped * because ndlp is inflight with no WWPN. */ ndlp->nlp_DID = keepDID; ndlp->nlp_fc4_type = keep_nlp_fc4_type; lpfc_nlp_set_state(vport, ndlp, keep_nlp_state); if (phba->sli_rev == LPFC_SLI_REV4 && active_rrqs_xri_bitmap) memcpy(ndlp->active_rrqs_xri_bitmap, active_rrqs_xri_bitmap, phba->cfg_rrq_xri_bitmap_sz); } else { lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3180 PLOGI confirm SWAP: %x %x\n", new_ndlp->nlp_DID, keepDID); lpfc_unreg_rpi(vport, ndlp); /* The ndlp and new_ndlp both have WWPNs but are swapping * NPort Ids and attributes. */ ndlp->nlp_DID = keepDID; ndlp->nlp_fc4_type = keep_nlp_fc4_type; if (phba->sli_rev == LPFC_SLI_REV4 && active_rrqs_xri_bitmap) memcpy(ndlp->active_rrqs_xri_bitmap, active_rrqs_xri_bitmap, phba->cfg_rrq_xri_bitmap_sz); /* Since we are switching over to the new_ndlp, * reset the old ndlp state */ if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) || (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) keep_nlp_state = NLP_STE_NPR_NODE; lpfc_nlp_set_state(vport, ndlp, keep_nlp_state); ndlp->nrport = keep_nrport; } /* * If ndlp is not associated with any rport we can drop it here else * let dev_loss_tmo_callbk trigger DEVICE_RM event */ if (!ndlp->rport && (ndlp->nlp_state == NLP_STE_NPR_NODE)) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); if (phba->sli_rev == LPFC_SLI_REV4 && active_rrqs_xri_bitmap) mempool_free(active_rrqs_xri_bitmap, phba->active_rrq_pool); lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE, "3173 PLOGI confirm exit: new_ndlp x%x x%x x%x\n", new_ndlp->nlp_DID, new_ndlp->nlp_flag, new_ndlp->nlp_fc4_type); return new_ndlp; } /** * lpfc_end_rscn - Check and handle more rscn for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine checks whether more Registration State Change * Notifications (RSCNs) came in while the discovery state machine was in * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be * invoked to handle the additional RSCNs for the @vport. Otherwise, the * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of * handling the RSCNs. **/ void lpfc_end_rscn(struct lpfc_vport *vport) { if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) { /* * Check to see if more RSCNs came in while we were * processing this one. */ if (vport->fc_rscn_id_cnt || test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) lpfc_els_handle_rscn(vport); else clear_bit(FC_RSCN_MODE, &vport->fc_flag); } } /** * lpfc_cmpl_els_rrq - Completion handled for els RRQs. * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine will call the clear rrq function to free the rrq and * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not * exist then the clear_rrq is still called because the rrq needs to * be freed. **/ static void lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct lpfc_nodelist *ndlp = cmdiocb->ndlp; struct lpfc_node_rrq *rrq; u32 ulp_status = get_job_ulpstatus(phba, rspiocb); u32 ulp_word4 = get_job_word4(phba, rspiocb); /* we pass cmdiocb to state machine which needs rspiocb as well */ rrq = cmdiocb->context_un.rrq; cmdiocb->rsp_iocb = rspiocb; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "RRQ cmpl: status:x%x/x%x did:x%x", ulp_status, ulp_word4, get_job_els_rsp64_did(phba, cmdiocb)); /* rrq completes to NPort <nlp_DID> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2880 RRQ completes to DID x%x " "Data: x%x x%x x%x x%x x%x\n", ndlp->nlp_DID, ulp_status, ulp_word4, get_wqe_tmo(cmdiocb), rrq->xritag, rrq->rxid); if (ulp_status) { /* Check for retry */ /* RRQ failed Don't print the vport to vport rjts */ if (ulp_status != IOSTAT_LS_RJT || (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) && ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) || (phba)->pport->cfg_log_verbose & LOG_ELS) lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "2881 RRQ failure DID:%06X Status:" "x%x/x%x\n", ndlp->nlp_DID, ulp_status, ulp_word4); } lpfc_clr_rrq_active(phba, rrq->xritag, rrq); lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); return; } /** * lpfc_cmpl_els_plogi - Completion callback function for plogi * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function for issuing the Port * Login (PLOGI) command. For PLOGI completion, there must be an active * ndlp on the vport node list that matches the remote node ID from the * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply * ignored and command IOCB released. The PLOGI response IOCB status is * checked for error conditions. If there is error status reported, PLOGI * retry shall be attempted by invoking the lpfc_els_retry() routine. * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine * (DSM) is set for this PLOGI completion. Finally, it checks whether * there are additional N_Port nodes with the vport that need to perform * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition * PLOGIs. **/ static void lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; IOCB_t *irsp; struct lpfc_nodelist *ndlp, *free_ndlp; struct lpfc_dmabuf *prsp; int disc; struct serv_parm *sp = NULL; u32 ulp_status, ulp_word4, did, iotag; bool release_node = false; /* we pass cmdiocb to state machine which needs rspiocb as well */ cmdiocb->rsp_iocb = rspiocb; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); did = get_job_els_rsp64_did(phba, cmdiocb); if (phba->sli_rev == LPFC_SLI_REV4) { iotag = get_wqe_reqtag(cmdiocb); } else { irsp = &rspiocb->iocb; iotag = irsp->ulpIoTag; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "PLOGI cmpl: status:x%x/x%x did:x%x", ulp_status, ulp_word4, did); ndlp = lpfc_findnode_did(vport, did); if (!ndlp) { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0136 PLOGI completes to NPort x%x " "with no ndlp. Data: x%x x%x x%x\n", did, ulp_status, ulp_word4, iotag); goto out_freeiocb; } /* Since ndlp can be freed in the disc state machine, note if this node * is being used during discovery. */ spin_lock_irq(&ndlp->lock); disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; spin_unlock_irq(&ndlp->lock); /* PLOGI completes to NPort <nlp_DID> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0102 PLOGI completes to NPort x%06x " "IoTag x%x Data: x%x x%x x%x x%x x%x\n", ndlp->nlp_DID, iotag, ndlp->nlp_fc4_type, ulp_status, ulp_word4, disc, vport->num_disc_nodes); /* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) { spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(&ndlp->lock); goto out; } if (ulp_status) { /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { /* ELS command is being retried */ if (disc) { spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(&ndlp->lock); } goto out; } /* PLOGI failed Don't print the vport to vport rjts */ if (ulp_status != IOSTAT_LS_RJT || (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) && ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) || (phba)->pport->cfg_log_verbose & LOG_ELS) lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "2753 PLOGI failure DID:%06X " "Status:x%x/x%x\n", ndlp->nlp_DID, ulp_status, ulp_word4); /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4)) lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_PLOGI); /* If a PLOGI collision occurred, the node needs to continue * with the reglogin process. */ spin_lock_irq(&ndlp->lock); if ((ndlp->nlp_flag & (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI)) && ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) { spin_unlock_irq(&ndlp->lock); goto out; } /* No PLOGI collision and the node is not registered with the * scsi or nvme transport. It is no longer an active node. Just * start the device remove process. */ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS)) release_node = true; } spin_unlock_irq(&ndlp->lock); if (release_node) lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_DEVICE_RM); } else { /* Good status, call state machine */ prsp = list_get_first(&cmdiocb->cmd_dmabuf->list, struct lpfc_dmabuf, list); if (!prsp) goto out; if (!lpfc_is_els_acc_rsp(prsp)) goto out; ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp); sp = (struct serv_parm *)((u8 *)prsp->virt + sizeof(u32)); ndlp->vmid_support = 0; if ((phba->cfg_vmid_app_header && sp->cmn.app_hdr_support) || (phba->cfg_vmid_priority_tagging && sp->cmn.priority_tagging)) { lpfc_printf_log(phba, KERN_DEBUG, LOG_ELS, "4018 app_hdr_support %d tagging %d DID x%x\n", sp->cmn.app_hdr_support, sp->cmn.priority_tagging, ndlp->nlp_DID); /* if the dest port supports VMID, mark it in ndlp */ ndlp->vmid_support = 1; } lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_PLOGI); } if (disc && vport->num_disc_nodes) { /* Check to see if there are more PLOGIs to be sent */ lpfc_more_plogi(vport); if (vport->num_disc_nodes == 0) { clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag); lpfc_can_disctmo(vport); lpfc_end_rscn(vport); } } out: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, "PLOGI Cmpl PUT: did:x%x refcnt %d", ndlp->nlp_DID, kref_read(&ndlp->kref), 0); out_freeiocb: /* Release the reference on the original I/O request. */ free_ndlp = cmdiocb->ndlp; lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(free_ndlp); return; } /** * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport * @vport: pointer to a host virtual N_Port data structure. * @did: destination port identifier. * @retry: number of retries to the command IOCB. * * This routine issues a Port Login (PLOGI) command to a remote N_Port * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port, * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list. * This routine constructs the proper fields of the PLOGI IOCB and invokes * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command. * * Note that the ndlp reference count will be incremented by 1 for holding * the ndlp and the reference to ndlp will be stored into the ndlp field * of the IOCB for the completion callback function to the PLOGI ELS command. * * Return code * 0 - Successfully issued a plogi for @vport * 1 - failed to issue a plogi for @vport **/ int lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry) { struct lpfc_hba *phba = vport->phba; struct serv_parm *sp; struct lpfc_nodelist *ndlp; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; int ret; ndlp = lpfc_findnode_did(vport, did); if (!ndlp) return 1; /* Defer the processing of the issue PLOGI until after the * outstanding UNREG_RPI mbox command completes, unless we * are going offline. This logic does not apply for Fabric DIDs */ if ((ndlp->nlp_flag & (NLP_IGNR_REG_CMPL | NLP_UNREG_INP)) && ((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) && !test_bit(FC_OFFLINE_MODE, &vport->fc_flag)) { lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "4110 Issue PLOGI x%x deferred " "on NPort x%x rpi x%x flg x%x Data:" " x%px\n", ndlp->nlp_defer_did, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag, ndlp); /* We can only defer 1st PLOGI */ if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING) ndlp->nlp_defer_did = did; return 0; } cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did, ELS_CMD_PLOGI); if (!elsiocb) return 1; pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; /* For PLOGI request, remainder of payload is service parameters */ *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI; pcmd += sizeof(uint32_t); memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm)); sp = (struct serv_parm *) pcmd; /* * If we are a N-port connected to a Fabric, fix-up paramm's so logins * to device on remote loops work. */ if (test_bit(FC_FABRIC, &vport->fc_flag) && !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag)) sp->cmn.altBbCredit = 1; if (sp->cmn.fcphLow < FC_PH_4_3) sp->cmn.fcphLow = FC_PH_4_3; if (sp->cmn.fcphHigh < FC_PH3) sp->cmn.fcphHigh = FC_PH3; sp->cmn.valid_vendor_ver_level = 0; memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion)); sp->cmn.bbRcvSizeMsb &= 0xF; /* Check if the destination port supports VMID */ ndlp->vmid_support = 0; if (vport->vmid_priority_tagging) sp->cmn.priority_tagging = 1; else if (phba->cfg_vmid_app_header && bf_get(lpfc_ftr_ashdr, &phba->sli4_hba.sli4_flags)) sp->cmn.app_hdr_support = 1; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue PLOGI: did:x%x", did, 0, 0); /* If our firmware supports this feature, convey that * information to the target using the vendor specific field. */ if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) { sp->cmn.valid_vendor_ver_level = 1; sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID); sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP); } phba->fc_stat.elsXmitPLOGI++; elsiocb->cmd_cmpl = lpfc_cmpl_els_plogi; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue PLOGI: did:x%x refcnt %d", did, kref_read(&ndlp->kref), 0); elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (ret) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } return 0; } /** * lpfc_cmpl_els_prli - Completion callback function for prli * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function for a Process Login * (PRLI) ELS command. The PRLI response IOCB status is checked for error * status. If there is error status reported, PRLI retry shall be attempted * by invoking the lpfc_els_retry() routine. Otherwise, the state * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this * ndlp to mark the PRLI completion. **/ static void lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct lpfc_nodelist *ndlp; char *mode; u32 loglevel; u32 ulp_status; u32 ulp_word4; bool release_node = false; /* we pass cmdiocb to state machine which needs rspiocb as well */ cmdiocb->rsp_iocb = rspiocb; ndlp = cmdiocb->ndlp; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~NLP_PRLI_SND; /* Driver supports multiple FC4 types. Counters matter. */ vport->fc_prli_sent--; ndlp->fc4_prli_sent--; spin_unlock_irq(&ndlp->lock); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "PRLI cmpl: status:x%x/x%x did:x%x", ulp_status, ulp_word4, ndlp->nlp_DID); /* PRLI completes to NPort <nlp_DID> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0103 PRLI completes to NPort x%06x " "Data: x%x x%x x%x x%x x%x\n", ndlp->nlp_DID, ulp_status, ulp_word4, vport->num_disc_nodes, ndlp->fc4_prli_sent, ndlp->fc4_xpt_flags); /* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) goto out; if (ulp_status) { /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { /* ELS command is being retried */ goto out; } /* If we don't send GFT_ID to Fabric, a PRLI error * could be expected. */ if (test_bit(FC_FABRIC, &vport->fc_flag) || vport->cfg_enable_fc4_type != LPFC_ENABLE_BOTH) { mode = KERN_ERR; loglevel = LOG_TRACE_EVENT; } else { mode = KERN_INFO; loglevel = LOG_ELS; } /* PRLI failed */ lpfc_printf_vlog(vport, mode, loglevel, "2754 PRLI failure DID:%06X Status:x%x/x%x, " "data: x%x x%x x%x\n", ndlp->nlp_DID, ulp_status, ulp_word4, ndlp->nlp_state, ndlp->fc4_prli_sent, ndlp->nlp_flag); /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4)) lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_PRLI); /* The following condition catches an inflight transition * mismatch typically caused by an RSCN. Skip any * processing to allow recovery. */ if ((ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) || (ndlp->nlp_state == NLP_STE_NPR_NODE && ndlp->nlp_flag & NLP_DELAY_TMO)) { lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, "2784 PRLI cmpl: Allow Node recovery " "DID x%06x nstate x%x nflag x%x\n", ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag); goto out; } /* * For P2P topology, retain the node so that PLOGI can be * attempted on it again. */ if (test_bit(FC_PT2PT, &vport->fc_flag)) goto out; /* As long as this node is not registered with the SCSI * or NVMe transport and no other PRLIs are outstanding, * it is no longer an active node. Otherwise devloss * handles the final cleanup. */ spin_lock_irq(&ndlp->lock); if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) && !ndlp->fc4_prli_sent) { ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS)) release_node = true; } spin_unlock_irq(&ndlp->lock); if (release_node) lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_DEVICE_RM); } else { /* Good status, call state machine. However, if another * PRLI is outstanding, don't call the state machine * because final disposition to Mapped or Unmapped is * completed there. */ lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_PRLI); } out: lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); return; } /** * lpfc_issue_els_prli - Issue a prli iocb command for a vport * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine issues a Process Login (PRLI) ELS command for the * @vport. The PRLI service parameters are set up in the payload of the * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine * is put to the IOCB completion callback func field before invoking the * routine lpfc_sli_issue_iocb() to send out PRLI command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the PRLI ELS command. * * Return code * 0 - successfully issued prli iocb command for @vport * 1 - failed to issue prli iocb command for @vport **/ int lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry) { int rc = 0; struct lpfc_hba *phba = vport->phba; PRLI *npr; struct lpfc_nvme_prli *npr_nvme; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; u32 local_nlp_type, elscmd; /* * If we are in RSCN mode, the FC4 types supported from a * previous GFT_ID command may not be accurate. So, if we * are a NVME Initiator, always look for the possibility of * the remote NPort beng a NVME Target. */ if (phba->sli_rev == LPFC_SLI_REV4 && test_bit(FC_RSCN_MODE, &vport->fc_flag) && vport->nvmei_support) ndlp->nlp_fc4_type |= NLP_FC4_NVME; local_nlp_type = ndlp->nlp_fc4_type; /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp * fields here before any of them can complete. */ ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR); ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; ndlp->nlp_flag &= ~(NLP_FIRSTBURST | NLP_NPR_2B_DISC); ndlp->nvme_fb_size = 0; send_next_prli: if (local_nlp_type & NLP_FC4_FCP) { /* Payload is 4 + 16 = 20 x14 bytes. */ cmdsize = (sizeof(uint32_t) + sizeof(PRLI)); elscmd = ELS_CMD_PRLI; } else if (local_nlp_type & NLP_FC4_NVME) { /* Payload is 4 + 20 = 24 x18 bytes. */ cmdsize = (sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli)); elscmd = ELS_CMD_NVMEPRLI; } else { lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "3083 Unknown FC_TYPE x%x ndlp x%06x\n", ndlp->nlp_fc4_type, ndlp->nlp_DID); return 1; } /* SLI3 ports don't support NVME. If this rport is a strict NVME * FC4 type, implicitly LOGO. */ if (phba->sli_rev == LPFC_SLI_REV3 && ndlp->nlp_fc4_type == NLP_FC4_NVME) { lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n", ndlp->nlp_type); lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); return 1; } elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, elscmd); if (!elsiocb) return 1; pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; /* For PRLI request, remainder of payload is service parameters */ memset(pcmd, 0, cmdsize); if (local_nlp_type & NLP_FC4_FCP) { /* Remainder of payload is FCP PRLI parameter page. * Note: this data structure is defined as * BE/LE in the structure definition so no * byte swap call is made. */ *((uint32_t *)(pcmd)) = ELS_CMD_PRLI; pcmd += sizeof(uint32_t); npr = (PRLI *)pcmd; /* * If our firmware version is 3.20 or later, * set the following bits for FC-TAPE support. */ if (phba->vpd.rev.feaLevelHigh >= 0x02) { npr->ConfmComplAllowed = 1; npr->Retry = 1; npr->TaskRetryIdReq = 1; } npr->estabImagePair = 1; npr->readXferRdyDis = 1; if (vport->cfg_first_burst_size) npr->writeXferRdyDis = 1; /* For FCP support */ npr->prliType = PRLI_FCP_TYPE; npr->initiatorFunc = 1; elsiocb->cmd_flag |= LPFC_PRLI_FCP_REQ; /* Remove FCP type - processed. */ local_nlp_type &= ~NLP_FC4_FCP; } else if (local_nlp_type & NLP_FC4_NVME) { /* Remainder of payload is NVME PRLI parameter page. * This data structure is the newer definition that * uses bf macros so a byte swap is required. */ *((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI; pcmd += sizeof(uint32_t); npr_nvme = (struct lpfc_nvme_prli *)pcmd; bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE); bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */ if (phba->nsler) { bf_set(prli_nsler, npr_nvme, 1); bf_set(prli_conf, npr_nvme, 1); } /* Only initiators request first burst. */ if ((phba->cfg_nvme_enable_fb) && !phba->nvmet_support) bf_set(prli_fba, npr_nvme, 1); if (phba->nvmet_support) { bf_set(prli_tgt, npr_nvme, 1); bf_set(prli_disc, npr_nvme, 1); } else { bf_set(prli_init, npr_nvme, 1); bf_set(prli_conf, npr_nvme, 1); } npr_nvme->word1 = cpu_to_be32(npr_nvme->word1); npr_nvme->word4 = cpu_to_be32(npr_nvme->word4); elsiocb->cmd_flag |= LPFC_PRLI_NVME_REQ; /* Remove NVME type - processed. */ local_nlp_type &= ~NLP_FC4_NVME; } phba->fc_stat.elsXmitPRLI++; elsiocb->cmd_cmpl = lpfc_cmpl_els_prli; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue PRLI: did:x%x refcnt %d", ndlp->nlp_DID, kref_read(&ndlp->kref), 0); elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } /* The vport counters are used for lpfc_scan_finished, but * the ndlp is used to track outstanding PRLIs for different * FC4 types. */ spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_PRLI_SND; vport->fc_prli_sent++; ndlp->fc4_prli_sent++; spin_unlock_irq(&ndlp->lock); /* The driver supports 2 FC4 types. Make sure * a PRLI is issued for all types before exiting. */ if (phba->sli_rev == LPFC_SLI_REV4 && local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME)) goto send_next_prli; else return 0; } /** * lpfc_rscn_disc - Perform rscn discovery for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine performs Registration State Change Notification (RSCN) * discovery for a @vport. If the @vport's node port recovery count is not * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all * the nodes that need recovery. If none of the PLOGI were needed through * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be * invoked to check and handle possible more RSCN came in during the period * of processing the current ones. **/ static void lpfc_rscn_disc(struct lpfc_vport *vport) { lpfc_can_disctmo(vport); /* RSCN discovery */ /* go thru NPR nodes and issue ELS PLOGIs */ if (atomic_read(&vport->fc_npr_cnt)) if (lpfc_els_disc_plogi(vport)) return; lpfc_end_rscn(vport); } /** * lpfc_adisc_done - Complete the adisc phase of discovery * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs. * * This function is called when the final ADISC is completed during discovery. * This function handles clearing link attention or issuing reg_vpi depending * on whether npiv is enabled. This function also kicks off the PLOGI phase of * discovery. * This function is called with no locks held. **/ static void lpfc_adisc_done(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; /* * For NPIV, cmpl_reg_vpi will set port_state to READY, * and continue discovery. */ if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && !test_bit(FC_RSCN_MODE, &vport->fc_flag) && (phba->sli_rev < LPFC_SLI_REV4)) { /* * If link is down, clear_la and reg_vpi will be done after * flogi following a link up event */ if (!lpfc_is_link_up(phba)) return; /* The ADISCs are complete. Doesn't matter if they * succeeded or failed because the ADISC completion * routine guarantees to call the state machine and * the RPI is either unregistered (failed ADISC response) * or the RPI is still valid and the node is marked * mapped for a target. The exchanges should be in the * correct state. This code is specific to SLI3. */ lpfc_issue_clear_la(phba, vport); lpfc_issue_reg_vpi(phba, vport); return; } /* * For SLI2, we need to set port_state to READY * and continue discovery. */ if (vport->port_state < LPFC_VPORT_READY) { /* If we get here, there is nothing to ADISC */ lpfc_issue_clear_la(phba, vport); if (!test_bit(FC_ABORT_DISCOVERY, &vport->fc_flag)) { vport->num_disc_nodes = 0; /* go thru NPR list, issue ELS PLOGIs */ if (atomic_read(&vport->fc_npr_cnt)) lpfc_els_disc_plogi(vport); if (!vport->num_disc_nodes) { clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag); lpfc_can_disctmo(vport); lpfc_end_rscn(vport); } } vport->port_state = LPFC_VPORT_READY; } else lpfc_rscn_disc(vport); } /** * lpfc_more_adisc - Issue more adisc as needed * @vport: pointer to a host virtual N_Port data structure. * * This routine determines whether there are more ndlps on a @vport * node list need to have Address Discover (ADISC) issued. If so, it will * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's * remaining nodes which need to have ADISC sent. **/ void lpfc_more_adisc(struct lpfc_vport *vport) { if (vport->num_disc_nodes) vport->num_disc_nodes--; /* Continue discovery with <num_disc_nodes> ADISCs to go */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0210 Continue discovery with %d ADISCs to go " "Data: x%x x%lx x%x\n", vport->num_disc_nodes, atomic_read(&vport->fc_adisc_cnt), vport->fc_flag, vport->port_state); /* Check to see if there are more ADISCs to be sent */ if (test_bit(FC_NLP_MORE, &vport->fc_flag)) { lpfc_set_disctmo(vport); /* go thru NPR nodes and issue any remaining ELS ADISCs */ lpfc_els_disc_adisc(vport); } if (!vport->num_disc_nodes) lpfc_adisc_done(vport); return; } /** * lpfc_cmpl_els_adisc - Completion callback function for adisc * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion function for issuing the Address Discover * (ADISC) command. It first checks to see whether link went down during * the discovery process. If so, the node will be marked as node port * recovery for issuing discover IOCB by the link attention handler and * exit. Otherwise, the response status is checked. If error was reported * in the response status, the ADISC command shall be retried by invoking * the lpfc_els_retry() routine. Otherwise, if no error was reported in * the response status, the state machine is invoked to set transition * with respect to NLP_EVT_CMPL_ADISC event. **/ static void lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; IOCB_t *irsp; struct lpfc_nodelist *ndlp; int disc; u32 ulp_status, ulp_word4, tmo, iotag; bool release_node = false; /* we pass cmdiocb to state machine which needs rspiocb as well */ cmdiocb->rsp_iocb = rspiocb; ndlp = cmdiocb->ndlp; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); if (phba->sli_rev == LPFC_SLI_REV4) { tmo = get_wqe_tmo(cmdiocb); iotag = get_wqe_reqtag(cmdiocb); } else { irsp = &rspiocb->iocb; tmo = irsp->ulpTimeout; iotag = irsp->ulpIoTag; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "ADISC cmpl: status:x%x/x%x did:x%x", ulp_status, ulp_word4, ndlp->nlp_DID); /* Since ndlp can be freed in the disc state machine, note if this node * is being used during discovery. */ spin_lock_irq(&ndlp->lock); disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC); spin_unlock_irq(&ndlp->lock); /* ADISC completes to NPort <nlp_DID> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0104 ADISC completes to NPort x%x " "IoTag x%x Data: x%x x%x x%x x%x x%x\n", ndlp->nlp_DID, iotag, ulp_status, ulp_word4, tmo, disc, vport->num_disc_nodes); /* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) { spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(&ndlp->lock); goto out; } if (ulp_status) { /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { /* ELS command is being retried */ if (disc) { spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(&ndlp->lock); lpfc_set_disctmo(vport); } goto out; } /* ADISC failed */ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "2755 ADISC failure DID:%06X Status:x%x/x%x\n", ndlp->nlp_DID, ulp_status, ulp_word4); lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_ADISC); /* As long as this node is not registered with the SCSI or NVMe * transport, it is no longer an active node. Otherwise * devloss handles the final cleanup. */ spin_lock_irq(&ndlp->lock); if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS)) release_node = true; } spin_unlock_irq(&ndlp->lock); if (release_node) lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_DEVICE_RM); } else /* Good status, call state machine */ lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_ADISC); /* Check to see if there are more ADISCs to be sent */ if (disc && vport->num_disc_nodes) lpfc_more_adisc(vport); out: lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); return; } /** * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine issues an Address Discover (ADISC) for an @ndlp on a * @vport. It prepares the payload of the ADISC ELS command, updates the * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine * to issue the ADISC ELS command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the ADISC ELS command. * * Return code * 0 - successfully issued adisc * 1 - failed to issue adisc **/ int lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry) { int rc = 0; struct lpfc_hba *phba = vport->phba; ADISC *ap; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; cmdsize = (sizeof(uint32_t) + sizeof(ADISC)); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_ADISC); if (!elsiocb) return 1; pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; /* For ADISC request, remainder of payload is service parameters */ *((uint32_t *) (pcmd)) = ELS_CMD_ADISC; pcmd += sizeof(uint32_t); /* Fill in ADISC payload */ ap = (ADISC *) pcmd; ap->hardAL_PA = phba->fc_pref_ALPA; memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name)); memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); ap->DID = be32_to_cpu(vport->fc_myDID); phba->fc_stat.elsXmitADISC++; elsiocb->cmd_cmpl = lpfc_cmpl_els_adisc; spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_ADISC_SND; spin_unlock_irq(&ndlp->lock); elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); goto err; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue ADISC: did:x%x refcnt %d", ndlp->nlp_DID, kref_read(&ndlp->kref), 0); rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); goto err; } return 0; err: spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~NLP_ADISC_SND; spin_unlock_irq(&ndlp->lock); return 1; } /** * lpfc_cmpl_els_logo - Completion callback function for logo * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion function for issuing the ELS Logout (LOGO) * command. If no error status was reported from the LOGO response, the * state machine of the associated ndlp shall be invoked for transition with * respect to NLP_EVT_CMPL_LOGO event. **/ static void lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_nodelist *ndlp = cmdiocb->ndlp; struct lpfc_vport *vport = ndlp->vport; IOCB_t *irsp; unsigned long flags; uint32_t skip_recovery = 0; int wake_up_waiter = 0; u32 ulp_status; u32 ulp_word4; u32 tmo, iotag; /* we pass cmdiocb to state machine which needs rspiocb as well */ cmdiocb->rsp_iocb = rspiocb; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); if (phba->sli_rev == LPFC_SLI_REV4) { tmo = get_wqe_tmo(cmdiocb); iotag = get_wqe_reqtag(cmdiocb); } else { irsp = &rspiocb->iocb; tmo = irsp->ulpTimeout; iotag = irsp->ulpIoTag; } spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~NLP_LOGO_SND; if (ndlp->save_flags & NLP_WAIT_FOR_LOGO) { wake_up_waiter = 1; ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO; } spin_unlock_irq(&ndlp->lock); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "LOGO cmpl: status:x%x/x%x did:x%x", ulp_status, ulp_word4, ndlp->nlp_DID); /* LOGO completes to NPort <nlp_DID> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0105 LOGO completes to NPort x%x " "IoTag x%x refcnt %d nflags x%x xflags x%x " "Data: x%x x%x x%x x%x\n", ndlp->nlp_DID, iotag, kref_read(&ndlp->kref), ndlp->nlp_flag, ndlp->fc4_xpt_flags, ulp_status, ulp_word4, tmo, vport->num_disc_nodes); if (lpfc_els_chk_latt(vport)) { skip_recovery = 1; goto out; } /* The LOGO will not be retried on failure. A LOGO was * issued to the remote rport and a ACC or RJT or no Answer are * all acceptable. Note the failure and move forward with * discovery. The PLOGI will retry. */ if (ulp_status) { /* LOGO failed */ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "2756 LOGO failure, No Retry DID:%06X " "Status:x%x/x%x\n", ndlp->nlp_DID, ulp_status, ulp_word4); if (lpfc_error_lost_link(vport, ulp_status, ulp_word4)) skip_recovery = 1; } /* Call state machine. This will unregister the rpi if needed. */ lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO); if (skip_recovery) goto out; /* The driver sets this flag for an NPIV instance that doesn't want to * log into the remote port. */ if (ndlp->nlp_flag & NLP_TARGET_REMOVE) { spin_lock_irq(&ndlp->lock); if (phba->sli_rev == LPFC_SLI_REV4) ndlp->nlp_flag |= NLP_RELEASE_RPI; ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; spin_unlock_irq(&ndlp->lock); lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_DEVICE_RM); goto out_rsrc_free; } out: /* At this point, the LOGO processing is complete. NOTE: For a * pt2pt topology, we are assuming the NPortID will only change * on link up processing. For a LOGO / PLOGI initiated by the * Initiator, we are assuming the NPortID is not going to change. */ if (wake_up_waiter && ndlp->logo_waitq) wake_up(ndlp->logo_waitq); /* * If the node is a target, the handling attempts to recover the port. * For any other port type, the rpi is unregistered as an implicit * LOGO. */ if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) && skip_recovery == 0) { lpfc_cancel_retry_delay_tmo(vport, ndlp); spin_lock_irqsave(&ndlp->lock, flags); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irqrestore(&ndlp->lock, flags); lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3187 LOGO completes to NPort x%x: Start " "Recovery Data: x%x x%x x%x x%x\n", ndlp->nlp_DID, ulp_status, ulp_word4, tmo, vport->num_disc_nodes); lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); lpfc_disc_start(vport); return; } /* Cleanup path for failed REG_RPI handling. If REG_RPI fails, the * driver sends a LOGO to the rport to cleanup. For fabric and * initiator ports cleanup the node as long as it the node is not * register with the transport. */ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; spin_unlock_irq(&ndlp->lock); lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_DEVICE_RM); } out_rsrc_free: /* Driver is done with the I/O. */ lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); } /** * lpfc_issue_els_logo - Issue a logo to an node on a vport * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine constructs and issues an ELS Logout (LOGO) iocb command * to a remote node, referred by an @ndlp on a @vport. It constructs the * payload of the IOCB, properly sets up the @ndlp state, and invokes the * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the LOGO ELS command. * * Callers of this routine are expected to unregister the RPI first * * Return code * 0 - successfully issued logo * 1 - failed to issue logo **/ int lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry) { struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; int rc; spin_lock_irq(&ndlp->lock); if (ndlp->nlp_flag & NLP_LOGO_SND) { spin_unlock_irq(&ndlp->lock); return 0; } spin_unlock_irq(&ndlp->lock); cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_LOGO); if (!elsiocb) return 1; pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_LOGO; pcmd += sizeof(uint32_t); /* Fill in LOGO payload */ *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID); pcmd += sizeof(uint32_t); memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name)); phba->fc_stat.elsXmitLOGO++; elsiocb->cmd_cmpl = lpfc_cmpl_els_logo; spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_LOGO_SND; ndlp->nlp_flag &= ~NLP_ISSUE_LOGO; spin_unlock_irq(&ndlp->lock); elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); goto err; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue LOGO: did:x%x refcnt %d", ndlp->nlp_DID, kref_read(&ndlp->kref), 0); rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); goto err; } spin_lock_irq(&ndlp->lock); ndlp->nlp_prev_state = ndlp->nlp_state; spin_unlock_irq(&ndlp->lock); lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); return 0; err: spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~NLP_LOGO_SND; spin_unlock_irq(&ndlp->lock); return 1; } /** * lpfc_cmpl_els_cmd - Completion callback function for generic els command * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is a generic completion callback function for ELS commands. * Specifically, it is the callback function which does not need to perform * any command specific operations. It is currently used by the ELS command * issuing routines for RSCN, lpfc_issue_els_rscn, and the ELS Fibre Channel * Address Resolution Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). * Other than certain debug loggings, this callback function simply invokes the * lpfc_els_chk_latt() routine to check whether link went down during the * discovery process. **/ static void lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct lpfc_nodelist *free_ndlp; IOCB_t *irsp; u32 ulp_status, ulp_word4, tmo, did, iotag; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); did = get_job_els_rsp64_did(phba, cmdiocb); if (phba->sli_rev == LPFC_SLI_REV4) { tmo = get_wqe_tmo(cmdiocb); iotag = get_wqe_reqtag(cmdiocb); } else { irsp = &rspiocb->iocb; tmo = irsp->ulpTimeout; iotag = irsp->ulpIoTag; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "ELS cmd cmpl: status:x%x/x%x did:x%x", ulp_status, ulp_word4, did); /* ELS cmd tag <ulpIoTag> completes */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n", iotag, ulp_status, ulp_word4, tmo); /* Check to see if link went down during discovery */ lpfc_els_chk_latt(vport); free_ndlp = cmdiocb->ndlp; lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(free_ndlp); } /** * lpfc_reg_fab_ctrl_node - RPI register the fabric controller node. * @vport: pointer to lpfc_vport data structure. * @fc_ndlp: pointer to the fabric controller (0xfffffd) node. * * This routine registers the rpi assigned to the fabric controller * NPort_ID (0xfffffd) with the port and moves the node to UNMAPPED * state triggering a registration with the SCSI transport. * * This routine is single out because the fabric controller node * does not receive a PLOGI. This routine is consumed by the * SCR and RDF ELS commands. Callers are expected to qualify * with SLI4 first. **/ static int lpfc_reg_fab_ctrl_node(struct lpfc_vport *vport, struct lpfc_nodelist *fc_ndlp) { int rc = 0; struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ns_ndlp; LPFC_MBOXQ_t *mbox; if (fc_ndlp->nlp_flag & NLP_RPI_REGISTERED) return rc; ns_ndlp = lpfc_findnode_did(vport, NameServer_DID); if (!ns_ndlp) return -ENODEV; lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, "0935 %s: Reg FC RPI x%x on FC DID x%x NSSte: x%x\n", __func__, fc_ndlp->nlp_rpi, fc_ndlp->nlp_DID, ns_ndlp->nlp_state); if (ns_ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) return -ENODEV; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) { lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, "0936 %s: no memory for reg_login " "Data: x%x x%x x%x x%x\n", __func__, fc_ndlp->nlp_DID, fc_ndlp->nlp_state, fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi); return -ENOMEM; } rc = lpfc_reg_rpi(phba, vport->vpi, fc_ndlp->nlp_DID, (u8 *)&vport->fc_sparam, mbox, fc_ndlp->nlp_rpi); if (rc) { rc = -EACCES; goto out; } fc_ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; mbox->mbox_cmpl = lpfc_mbx_cmpl_fc_reg_login; mbox->ctx_ndlp = lpfc_nlp_get(fc_ndlp); if (!mbox->ctx_ndlp) { rc = -ENOMEM; goto out; } mbox->vport = vport; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { rc = -ENODEV; lpfc_nlp_put(fc_ndlp); goto out; } /* Success path. Exit. */ lpfc_nlp_set_state(vport, fc_ndlp, NLP_STE_REG_LOGIN_ISSUE); return 0; out: lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, "0938 %s: failed to format reg_login " "Data: x%x x%x x%x x%x\n", __func__, fc_ndlp->nlp_DID, fc_ndlp->nlp_state, fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi); return rc; } /** * lpfc_cmpl_els_disc_cmd - Completion callback function for Discovery ELS cmd * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is a generic completion callback function for Discovery ELS cmd. * Currently used by the ELS command issuing routines for the ELS State Change * Request (SCR), lpfc_issue_els_scr() and the ELS RDF, lpfc_issue_els_rdf(). * These commands will be retried once only for ELS timeout errors. **/ static void lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; IOCB_t *irsp; struct lpfc_els_rdf_rsp *prdf; struct lpfc_dmabuf *pcmd, *prsp; u32 *pdata; u32 cmd; struct lpfc_nodelist *ndlp = cmdiocb->ndlp; u32 ulp_status, ulp_word4, tmo, did, iotag; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); did = get_job_els_rsp64_did(phba, cmdiocb); if (phba->sli_rev == LPFC_SLI_REV4) { tmo = get_wqe_tmo(cmdiocb); iotag = get_wqe_reqtag(cmdiocb); } else { irsp = &rspiocb->iocb; tmo = irsp->ulpTimeout; iotag = irsp->ulpIoTag; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "ELS cmd cmpl: status:x%x/x%x did:x%x", ulp_status, ulp_word4, did); /* ELS cmd tag <ulpIoTag> completes */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, "0217 ELS cmd tag x%x completes Data: x%x x%x x%x x%x\n", iotag, ulp_status, ulp_word4, tmo, cmdiocb->retry); pcmd = cmdiocb->cmd_dmabuf; if (!pcmd) goto out; pdata = (u32 *)pcmd->virt; if (!pdata) goto out; cmd = *pdata; /* Only 1 retry for ELS Timeout only */ if (ulp_status == IOSTAT_LOCAL_REJECT && ((ulp_word4 & IOERR_PARAM_MASK) == IOERR_SEQUENCE_TIMEOUT)) { cmdiocb->retry++; if (cmdiocb->retry <= 1) { switch (cmd) { case ELS_CMD_SCR: lpfc_issue_els_scr(vport, cmdiocb->retry); break; case ELS_CMD_EDC: lpfc_issue_els_edc(vport, cmdiocb->retry); break; case ELS_CMD_RDF: lpfc_issue_els_rdf(vport, cmdiocb->retry); break; } goto out; } phba->fc_stat.elsRetryExceeded++; } if (cmd == ELS_CMD_EDC) { /* must be called before checking uplStatus and returning */ lpfc_cmpl_els_edc(phba, cmdiocb, rspiocb); return; } if (ulp_status) { /* ELS discovery cmd completes with error */ lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT, "4203 ELS cmd x%x error: x%x x%X\n", cmd, ulp_status, ulp_word4); goto out; } /* The RDF response doesn't have any impact on the running driver * but the notification descriptors are dumped here for support. */ if (cmd == ELS_CMD_RDF) { int i; prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); if (!prsp) goto out; prdf = (struct lpfc_els_rdf_rsp *)prsp->virt; if (!prdf) goto out; if (!lpfc_is_els_acc_rsp(prsp)) goto out; for (i = 0; i < ELS_RDF_REG_TAG_CNT && i < be32_to_cpu(prdf->reg_d1.reg_desc.count); i++) lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, "4677 Fabric RDF Notification Grant " "Data: 0x%08x Reg: %x %x\n", be32_to_cpu( prdf->reg_d1.desc_tags[i]), phba->cgn_reg_signal, phba->cgn_reg_fpin); } out: /* Check to see if link went down during discovery */ lpfc_els_chk_latt(vport); lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); return; } /** * lpfc_issue_els_scr - Issue a scr to an node on a vport * @vport: pointer to a host virtual N_Port data structure. * @retry: retry counter for the command IOCB. * * This routine issues a State Change Request (SCR) to a fabric node * on a @vport. The remote node is Fabric Controller (0xfffffd). It * first search the @vport node list to find the matching ndlp. If no such * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb() * routine is invoked to send the SCR IOCB. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the SCR ELS command. * * Return code * 0 - Successfully issued scr command * 1 - Failed to issue scr command **/ int lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry) { int rc = 0; struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; struct lpfc_nodelist *ndlp; cmdsize = (sizeof(uint32_t) + sizeof(SCR)); ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID); if (!ndlp) { ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID); if (!ndlp) return 1; lpfc_enqueue_node(vport, ndlp); } elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_SCR); if (!elsiocb) return 1; if (phba->sli_rev == LPFC_SLI_REV4) { rc = lpfc_reg_fab_ctrl_node(vport, ndlp); if (rc) { lpfc_els_free_iocb(phba, elsiocb); lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, "0937 %s: Failed to reg fc node, rc %d\n", __func__, rc); return 1; } } pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_SCR; pcmd += sizeof(uint32_t); /* For SCR, remainder of payload is SCR parameter page */ memset(pcmd, 0, sizeof(SCR)); ((SCR *) pcmd)->Function = SCR_FUNC_FULL; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue SCR: did:x%x", ndlp->nlp_DID, 0, 0); phba->fc_stat.elsXmitSCR++; elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue SCR: did:x%x refcnt %d", ndlp->nlp_DID, kref_read(&ndlp->kref), 0); rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } return 0; } /** * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric) * or the other nport (pt2pt). * @vport: pointer to a host virtual N_Port data structure. * @retry: number of retries to the command IOCB. * * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD) * when connected to a fabric, or to the remote port when connected * in point-to-point mode. When sent to the Fabric Controller, it will * replay the RSCN to registered recipients. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the RSCN ELS command. * * Return code * 0 - Successfully issued RSCN command * 1 - Failed to issue RSCN command **/ int lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry) { int rc = 0; struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; struct lpfc_nodelist *ndlp; struct { struct fc_els_rscn rscn; struct fc_els_rscn_page portid; } *event; uint32_t nportid; uint16_t cmdsize = sizeof(*event); /* Not supported for private loop */ if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag)) return 1; if (test_bit(FC_PT2PT, &vport->fc_flag)) { /* find any mapped nport - that would be the other nport */ ndlp = lpfc_findnode_mapped(vport); if (!ndlp) return 1; } else { nportid = FC_FID_FCTRL; /* find the fabric controller node */ ndlp = lpfc_findnode_did(vport, nportid); if (!ndlp) { /* if one didn't exist, make one */ ndlp = lpfc_nlp_init(vport, nportid); if (!ndlp) return 1; lpfc_enqueue_node(vport, ndlp); } } elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_RSCN_XMT); if (!elsiocb) return 1; event = elsiocb->cmd_dmabuf->virt; event->rscn.rscn_cmd = ELS_RSCN; event->rscn.rscn_page_len = sizeof(struct fc_els_rscn_page); event->rscn.rscn_plen = cpu_to_be16(cmdsize); nportid = vport->fc_myDID; /* appears that page flags must be 0 for fabric to broadcast RSCN */ event->portid.rscn_page_flags = 0; event->portid.rscn_fid[0] = (nportid & 0x00FF0000) >> 16; event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8; event->portid.rscn_fid[2] = nportid & 0x000000FF; phba->fc_stat.elsXmitRSCN++; elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue RSCN: did:x%x", ndlp->nlp_DID, 0, 0); rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } return 0; } /** * lpfc_issue_els_farpr - Issue a farp to an node on a vport * @vport: pointer to a host virtual N_Port data structure. * @nportid: N_Port identifier to the remote node. * @retry: number of retries to the command IOCB. * * This routine issues a Fibre Channel Address Resolution Response * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid) * is passed into the function. It first search the @vport node list to find * the matching ndlp. If no such ndlp is found, a new ndlp shall be created * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the FARPR ELS command. * * Return code * 0 - Successfully issued farpr command * 1 - Failed to issue farpr command **/ static int lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry) { int rc = 0; struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; FARP *fp; uint8_t *pcmd; uint32_t *lp; uint16_t cmdsize; struct lpfc_nodelist *ondlp; struct lpfc_nodelist *ndlp; cmdsize = (sizeof(uint32_t) + sizeof(FARP)); ndlp = lpfc_findnode_did(vport, nportid); if (!ndlp) { ndlp = lpfc_nlp_init(vport, nportid); if (!ndlp) return 1; lpfc_enqueue_node(vport, ndlp); } elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_FARPR); if (!elsiocb) return 1; pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_FARPR; pcmd += sizeof(uint32_t); /* Fill in FARPR payload */ fp = (FARP *) (pcmd); memset(fp, 0, sizeof(FARP)); lp = (uint32_t *) pcmd; *lp++ = be32_to_cpu(nportid); *lp++ = be32_to_cpu(vport->fc_myDID); fp->Rflags = 0; fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE); memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name)); memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); ondlp = lpfc_findnode_did(vport, nportid); if (ondlp) { memcpy(&fp->OportName, &ondlp->nlp_portname, sizeof(struct lpfc_name)); memcpy(&fp->OnodeName, &ondlp->nlp_nodename, sizeof(struct lpfc_name)); } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue FARPR: did:x%x", ndlp->nlp_DID, 0, 0); phba->fc_stat.elsXmitFARPR++; elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { /* The additional lpfc_nlp_put will cause the following * lpfc_els_free_iocb routine to trigger the release of * the node. */ lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } /* This will cause the callback-function lpfc_cmpl_els_cmd to * trigger the release of the node. */ /* Don't release reference count as RDF is likely outstanding */ return 0; } /** * lpfc_issue_els_rdf - Register for diagnostic functions from the fabric. * @vport: pointer to a host virtual N_Port data structure. * @retry: retry counter for the command IOCB. * * This routine issues an ELS RDF to the Fabric Controller to register * for diagnostic functions. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the RDF ELS command. * * Return code * 0 - Successfully issued rdf command * 1 - Failed to issue rdf command **/ int lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry) { struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; struct lpfc_els_rdf_req *prdf; struct lpfc_nodelist *ndlp; uint16_t cmdsize; int rc; cmdsize = sizeof(*prdf); ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID); if (!ndlp) { ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID); if (!ndlp) return -ENODEV; lpfc_enqueue_node(vport, ndlp); } /* RDF ELS is not required on an NPIV VN_Port. */ if (vport->port_type == LPFC_NPIV_PORT) return -EACCES; elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_RDF); if (!elsiocb) return -ENOMEM; /* Configure the payload for the supported FPIN events. */ prdf = (struct lpfc_els_rdf_req *)elsiocb->cmd_dmabuf->virt; memset(prdf, 0, cmdsize); prdf->rdf.fpin_cmd = ELS_RDF; prdf->rdf.desc_len = cpu_to_be32(sizeof(struct lpfc_els_rdf_req) - sizeof(struct fc_els_rdf)); prdf->reg_d1.reg_desc.desc_tag = cpu_to_be32(ELS_DTAG_FPIN_REGISTER); prdf->reg_d1.reg_desc.desc_len = cpu_to_be32( FC_TLV_DESC_LENGTH_FROM_SZ(prdf->reg_d1)); prdf->reg_d1.reg_desc.count = cpu_to_be32(ELS_RDF_REG_TAG_CNT); prdf->reg_d1.desc_tags[0] = cpu_to_be32(ELS_DTAG_LNK_INTEGRITY); prdf->reg_d1.desc_tags[1] = cpu_to_be32(ELS_DTAG_DELIVERY); prdf->reg_d1.desc_tags[2] = cpu_to_be32(ELS_DTAG_PEER_CONGEST); prdf->reg_d1.desc_tags[3] = cpu_to_be32(ELS_DTAG_CONGESTION); lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, "6444 Xmit RDF to remote NPORT x%x Reg: %x %x\n", ndlp->nlp_DID, phba->cgn_reg_signal, phba->cgn_reg_fpin); phba->cgn_fpin_frequency = LPFC_FPIN_INIT_FREQ; elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return -EIO; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue RDF: did:x%x refcnt %d", ndlp->nlp_DID, kref_read(&ndlp->kref), 0); rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return -EIO; } return 0; } /** * lpfc_els_rcv_rdf - Receive RDF ELS request from the fabric. * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * A received RDF implies a possible change to fabric supported diagnostic * functions. This routine sends LS_ACC and then has the Nx_Port issue a new * RDF request to reregister for supported diagnostic functions. * * Return code * 0 - Success * -EIO - Failed to process received RDF **/ static int lpfc_els_rcv_rdf(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { /* Send LS_ACC */ if (lpfc_els_rsp_acc(vport, ELS_CMD_RDF, cmdiocb, ndlp, NULL)) { lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, "1623 Failed to RDF_ACC from x%x for x%x\n", ndlp->nlp_DID, vport->fc_myDID); return -EIO; } /* Issue new RDF for reregistering */ if (lpfc_issue_els_rdf(vport, 0)) { lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, "2623 Failed to re register RDF for x%x\n", vport->fc_myDID); return -EIO; } return 0; } /** * lpfc_least_capable_settings - helper function for EDC rsp processing * @phba: pointer to lpfc hba data structure. * @pcgd: pointer to congestion detection descriptor in EDC rsp. * * This helper routine determines the least capable setting for * congestion signals, signal freq, including scale, from the * congestion detection descriptor in the EDC rsp. The routine * sets @phba values in preparation for a set_featues mailbox. **/ static void lpfc_least_capable_settings(struct lpfc_hba *phba, struct fc_diag_cg_sig_desc *pcgd) { u32 rsp_sig_cap = 0, drv_sig_cap = 0; u32 rsp_sig_freq_cyc = 0, rsp_sig_freq_scale = 0; /* Get rsp signal and frequency capabilities. */ rsp_sig_cap = be32_to_cpu(pcgd->xmt_signal_capability); rsp_sig_freq_cyc = be16_to_cpu(pcgd->xmt_signal_frequency.count); rsp_sig_freq_scale = be16_to_cpu(pcgd->xmt_signal_frequency.units); /* If the Fport does not support signals. Set FPIN only */ if (rsp_sig_cap == EDC_CG_SIG_NOTSUPPORTED) goto out_no_support; /* Apply the xmt scale to the xmt cycle to get the correct frequency. * Adapter default is 100 millisSeconds. Convert all xmt cycle values * to milliSeconds. */ switch (rsp_sig_freq_scale) { case EDC_CG_SIGFREQ_SEC: rsp_sig_freq_cyc *= MSEC_PER_SEC; break; case EDC_CG_SIGFREQ_MSEC: rsp_sig_freq_cyc = 1; break; default: goto out_no_support; } /* Convenient shorthand. */ drv_sig_cap = phba->cgn_reg_signal; /* Choose the least capable frequency. */ if (rsp_sig_freq_cyc > phba->cgn_sig_freq) phba->cgn_sig_freq = rsp_sig_freq_cyc; /* Should be some common signals support. Settle on least capable * signal and adjust FPIN values. Initialize defaults to ease the * decision. */ phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM; phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; if (rsp_sig_cap == EDC_CG_SIG_WARN_ONLY && (drv_sig_cap == EDC_CG_SIG_WARN_ONLY || drv_sig_cap == EDC_CG_SIG_WARN_ALARM)) { phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY; phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN; } if (rsp_sig_cap == EDC_CG_SIG_WARN_ALARM) { if (drv_sig_cap == EDC_CG_SIG_WARN_ALARM) { phba->cgn_reg_signal = EDC_CG_SIG_WARN_ALARM; phba->cgn_reg_fpin = LPFC_CGN_FPIN_NONE; } if (drv_sig_cap == EDC_CG_SIG_WARN_ONLY) { phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY; phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN; } } /* We are NOT recording signal frequency in congestion info buffer */ return; out_no_support: phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; phba->cgn_sig_freq = 0; phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN; } DECLARE_ENUM2STR_LOOKUP(lpfc_get_tlv_dtag_nm, fc_ls_tlv_dtag, FC_LS_TLV_DTAG_INIT); /** * lpfc_cmpl_els_edc - Completion callback function for EDC * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function for issuing the Exchange * Diagnostic Capabilities (EDC) command. The driver issues an EDC to * notify the FPort of its Congestion and Link Fault capabilities. This * routine parses the FPort's response and decides on the least common * values applicable to both FPort and NPort for Warnings and Alarms that * are communicated via hardware signals. **/ static void lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { IOCB_t *irsp_iocb; struct fc_els_edc_resp *edc_rsp; struct fc_tlv_desc *tlv; struct fc_diag_cg_sig_desc *pcgd; struct fc_diag_lnkflt_desc *plnkflt; struct lpfc_dmabuf *pcmd, *prsp; const char *dtag_nm; u32 *pdata, dtag; int desc_cnt = 0, bytes_remain; bool rcv_cap_desc = false; struct lpfc_nodelist *ndlp; u32 ulp_status, ulp_word4, tmo, did, iotag; ndlp = cmdiocb->ndlp; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); did = get_job_els_rsp64_did(phba, rspiocb); if (phba->sli_rev == LPFC_SLI_REV4) { tmo = get_wqe_tmo(rspiocb); iotag = get_wqe_reqtag(rspiocb); } else { irsp_iocb = &rspiocb->iocb; tmo = irsp_iocb->ulpTimeout; iotag = irsp_iocb->ulpIoTag; } lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD, "EDC cmpl: status:x%x/x%x did:x%x", ulp_status, ulp_word4, did); /* ELS cmd tag <ulpIoTag> completes */ lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, "4201 EDC cmd tag x%x completes Data: x%x x%x x%x\n", iotag, ulp_status, ulp_word4, tmo); pcmd = cmdiocb->cmd_dmabuf; if (!pcmd) goto out; pdata = (u32 *)pcmd->virt; if (!pdata) goto out; /* Need to clear signal values, send features MB and RDF with FPIN. */ if (ulp_status) goto out; prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); if (!prsp) goto out; edc_rsp = prsp->virt; if (!edc_rsp) goto out; /* ELS cmd tag <ulpIoTag> completes */ lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, "4676 Fabric EDC Rsp: " "0x%02x, 0x%08x\n", edc_rsp->acc_hdr.la_cmd, be32_to_cpu(edc_rsp->desc_list_len)); if (!lpfc_is_els_acc_rsp(prsp)) goto out; /* * Payload length in bytes is the response descriptor list * length minus the 12 bytes of Link Service Request * Information descriptor in the reply. */ bytes_remain = be32_to_cpu(edc_rsp->desc_list_len) - sizeof(struct fc_els_lsri_desc); if (bytes_remain <= 0) goto out; tlv = edc_rsp->desc; /* * cycle through EDC diagnostic descriptors to find the * congestion signaling capability descriptor */ while (bytes_remain) { if (bytes_remain < FC_TLV_DESC_HDR_SZ) { lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, "6461 Truncated TLV hdr on " "Diagnostic descriptor[%d]\n", desc_cnt); goto out; } dtag = be32_to_cpu(tlv->desc_tag); switch (dtag) { case ELS_DTAG_LNK_FAULT_CAP: if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != sizeof(struct fc_diag_lnkflt_desc)) { lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, "6462 Truncated Link Fault Diagnostic " "descriptor[%d]: %d vs 0x%zx 0x%zx\n", desc_cnt, bytes_remain, FC_TLV_DESC_SZ_FROM_LENGTH(tlv), sizeof(struct fc_diag_lnkflt_desc)); goto out; } plnkflt = (struct fc_diag_lnkflt_desc *)tlv; lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_LDS_EVENT, "4617 Link Fault Desc Data: 0x%08x 0x%08x " "0x%08x 0x%08x 0x%08x\n", be32_to_cpu(plnkflt->desc_tag), be32_to_cpu(plnkflt->desc_len), be32_to_cpu( plnkflt->degrade_activate_threshold), be32_to_cpu( plnkflt->degrade_deactivate_threshold), be32_to_cpu(plnkflt->fec_degrade_interval)); break; case ELS_DTAG_CG_SIGNAL_CAP: if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != sizeof(struct fc_diag_cg_sig_desc)) { lpfc_printf_log( phba, KERN_WARNING, LOG_CGN_MGMT, "6463 Truncated Cgn Signal Diagnostic " "descriptor[%d]: %d vs 0x%zx 0x%zx\n", desc_cnt, bytes_remain, FC_TLV_DESC_SZ_FROM_LENGTH(tlv), sizeof(struct fc_diag_cg_sig_desc)); goto out; } pcgd = (struct fc_diag_cg_sig_desc *)tlv; lpfc_printf_log( phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, "4616 CGN Desc Data: 0x%08x 0x%08x " "0x%08x 0x%04x 0x%04x 0x%08x 0x%04x 0x%04x\n", be32_to_cpu(pcgd->desc_tag), be32_to_cpu(pcgd->desc_len), be32_to_cpu(pcgd->xmt_signal_capability), be16_to_cpu(pcgd->xmt_signal_frequency.count), be16_to_cpu(pcgd->xmt_signal_frequency.units), be32_to_cpu(pcgd->rcv_signal_capability), be16_to_cpu(pcgd->rcv_signal_frequency.count), be16_to_cpu(pcgd->rcv_signal_frequency.units)); /* Compare driver and Fport capabilities and choose * least common. */ lpfc_least_capable_settings(phba, pcgd); rcv_cap_desc = true; break; default: dtag_nm = lpfc_get_tlv_dtag_nm(dtag); lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, "4919 unknown Diagnostic " "Descriptor[%d]: tag x%x (%s)\n", desc_cnt, dtag, dtag_nm); } bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); tlv = fc_tlv_next_desc(tlv); desc_cnt++; } out: if (!rcv_cap_desc) { phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN; phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; phba->cgn_sig_freq = 0; lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT, "4202 EDC rsp error - sending RDF " "for FPIN only.\n"); } lpfc_config_cgn_signal(phba); /* Check to see if link went down during discovery */ lpfc_els_chk_latt(phba->pport); lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD, "EDC Cmpl: did:x%x refcnt %d", ndlp->nlp_DID, kref_read(&ndlp->kref), 0); lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); } static void lpfc_format_edc_lft_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) { struct fc_diag_lnkflt_desc *lft = (struct fc_diag_lnkflt_desc *)tlv; lft->desc_tag = cpu_to_be32(ELS_DTAG_LNK_FAULT_CAP); lft->desc_len = cpu_to_be32( FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_lnkflt_desc)); lft->degrade_activate_threshold = cpu_to_be32(phba->degrade_activate_threshold); lft->degrade_deactivate_threshold = cpu_to_be32(phba->degrade_deactivate_threshold); lft->fec_degrade_interval = cpu_to_be32(phba->fec_degrade_interval); } static void lpfc_format_edc_cgn_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) { struct fc_diag_cg_sig_desc *cgd = (struct fc_diag_cg_sig_desc *)tlv; /* We are assuming cgd was zero'ed before calling this routine */ /* Configure the congestion detection capability */ cgd->desc_tag = cpu_to_be32(ELS_DTAG_CG_SIGNAL_CAP); /* Descriptor len doesn't include the tag or len fields. */ cgd->desc_len = cpu_to_be32( FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc)); /* xmt_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED. * xmt_signal_frequency.count already set to 0. * xmt_signal_frequency.units already set to 0. */ if (phba->cmf_active_mode == LPFC_CFG_OFF) { /* rcv_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED. * rcv_signal_frequency.count already set to 0. * rcv_signal_frequency.units already set to 0. */ phba->cgn_sig_freq = 0; return; } switch (phba->cgn_reg_signal) { case EDC_CG_SIG_WARN_ONLY: cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ONLY); break; case EDC_CG_SIG_WARN_ALARM: cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ALARM); break; default: /* rcv_signal_capability left 0 thus no support */ break; } /* We start negotiation with lpfc_fabric_cgn_frequency, after * the completion we settle on the higher frequency. */ cgd->rcv_signal_frequency.count = cpu_to_be16(lpfc_fabric_cgn_frequency); cgd->rcv_signal_frequency.units = cpu_to_be16(EDC_CG_SIGFREQ_MSEC); } static bool lpfc_link_is_lds_capable(struct lpfc_hba *phba) { if (!(phba->lmt & LMT_64Gb)) return false; if (phba->sli_rev != LPFC_SLI_REV4) return false; if (phba->sli4_hba.conf_trunk) { if (phba->trunk_link.phy_lnk_speed == LPFC_USER_LINK_SPEED_64G) return true; } else if (phba->fc_linkspeed == LPFC_LINK_SPEED_64GHZ) { return true; } return false; } /** * lpfc_issue_els_edc - Exchange Diagnostic Capabilities with the fabric. * @vport: pointer to a host virtual N_Port data structure. * @retry: retry counter for the command iocb. * * This routine issues an ELS EDC to the F-Port Controller to communicate * this N_Port's support of hardware signals in its Congestion * Capabilities Descriptor. * * Note: This routine does not check if one or more signals are * set in the cgn_reg_signal parameter. The caller makes the * decision to enforce cgn_reg_signal as nonzero or zero depending * on the conditions. During Fabric requests, the driver * requires cgn_reg_signals to be nonzero. But a dynamic request * to set the congestion mode to OFF from Monitor or Manage * would correctly issue an EDC with no signals enabled to * turn off switch functionality and then update the FW. * * Return code * 0 - Successfully issued edc command * 1 - Failed to issue edc command **/ int lpfc_issue_els_edc(struct lpfc_vport *vport, uint8_t retry) { struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; struct fc_els_edc *edc_req; struct fc_tlv_desc *tlv; u16 cmdsize; struct lpfc_nodelist *ndlp; u8 *pcmd = NULL; u32 cgn_desc_size, lft_desc_size; int rc; if (vport->port_type == LPFC_NPIV_PORT) return -EACCES; ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) return -ENODEV; cgn_desc_size = (phba->cgn_init_reg_signal) ? sizeof(struct fc_diag_cg_sig_desc) : 0; lft_desc_size = (lpfc_link_is_lds_capable(phba)) ? sizeof(struct fc_diag_lnkflt_desc) : 0; cmdsize = cgn_desc_size + lft_desc_size; /* Skip EDC if no applicable descriptors */ if (!cmdsize) goto try_rdf; cmdsize += sizeof(struct fc_els_edc); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_EDC); if (!elsiocb) goto try_rdf; /* Configure the payload for the supported Diagnostics capabilities. */ pcmd = (u8 *)elsiocb->cmd_dmabuf->virt; memset(pcmd, 0, cmdsize); edc_req = (struct fc_els_edc *)pcmd; edc_req->desc_len = cpu_to_be32(cgn_desc_size + lft_desc_size); edc_req->edc_cmd = ELS_EDC; tlv = edc_req->desc; if (cgn_desc_size) { lpfc_format_edc_cgn_desc(phba, tlv); phba->cgn_sig_freq = lpfc_fabric_cgn_frequency; tlv = fc_tlv_next_desc(tlv); } if (lft_desc_size) lpfc_format_edc_lft_desc(phba, tlv); lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, "4623 Xmit EDC to remote " "NPORT x%x reg_sig x%x reg_fpin:x%x\n", ndlp->nlp_DID, phba->cgn_reg_signal, phba->cgn_reg_fpin); elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return -EIO; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue EDC: did:x%x refcnt %d", ndlp->nlp_DID, kref_read(&ndlp->kref), 0); rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { /* The additional lpfc_nlp_put will cause the following * lpfc_els_free_iocb routine to trigger the rlease of * the node. */ lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); goto try_rdf; } return 0; try_rdf: phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM; phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; rc = lpfc_issue_els_rdf(vport, 0); return rc; } /** * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry * @vport: pointer to a host virtual N_Port data structure. * @nlp: pointer to a node-list data structure. * * This routine cancels the timer with a delayed IOCB-command retry for * a @vport's @ndlp. It stops the timer for the delayed function retrial and * removes the ELS retry event if it presents. In addition, if the * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB * commands are sent for the @vport's nodes that require issuing discovery * ADISC. **/ void lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp) { struct lpfc_work_evt *evtp; if (!(nlp->nlp_flag & NLP_DELAY_TMO)) return; spin_lock_irq(&nlp->lock); nlp->nlp_flag &= ~NLP_DELAY_TMO; spin_unlock_irq(&nlp->lock); del_timer_sync(&nlp->nlp_delayfunc); nlp->nlp_last_elscmd = 0; if (!list_empty(&nlp->els_retry_evt.evt_listp)) { list_del_init(&nlp->els_retry_evt.evt_listp); /* Decrement nlp reference count held for the delayed retry */ evtp = &nlp->els_retry_evt; lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1); } if (nlp->nlp_flag & NLP_NPR_2B_DISC) { spin_lock_irq(&nlp->lock); nlp->nlp_flag &= ~NLP_NPR_2B_DISC; spin_unlock_irq(&nlp->lock); if (vport->num_disc_nodes) { if (vport->port_state < LPFC_VPORT_READY) { /* Check if there are more ADISCs to be sent */ lpfc_more_adisc(vport); } else { /* Check if there are more PLOGIs to be sent */ lpfc_more_plogi(vport); if (vport->num_disc_nodes == 0) { clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag); lpfc_can_disctmo(vport); lpfc_end_rscn(vport); } } } } return; } /** * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer * @t: pointer to the timer function associated data (ndlp). * * This routine is invoked by the ndlp delayed-function timer to check * whether there is any pending ELS retry event(s) with the node. If not, it * simply returns. Otherwise, if there is at least one ELS delayed event, it * adds the delayed events to the HBA work list and invokes the * lpfc_worker_wake_up() routine to wake up worker thread to process the * event. Note that lpfc_nlp_get() is called before posting the event to * the work list to hold reference count of ndlp so that it guarantees the * reference to ndlp will still be available when the worker thread gets * to the event associated with the ndlp. **/ void lpfc_els_retry_delay(struct timer_list *t) { struct lpfc_nodelist *ndlp = from_timer(ndlp, t, nlp_delayfunc); struct lpfc_vport *vport = ndlp->vport; struct lpfc_hba *phba = vport->phba; unsigned long flags; struct lpfc_work_evt *evtp = &ndlp->els_retry_evt; /* Hold a node reference for outstanding queued work */ if (!lpfc_nlp_get(ndlp)) return; spin_lock_irqsave(&phba->hbalock, flags); if (!list_empty(&evtp->evt_listp)) { spin_unlock_irqrestore(&phba->hbalock, flags); lpfc_nlp_put(ndlp); return; } evtp->evt_arg1 = ndlp; evtp->evt = LPFC_EVT_ELS_RETRY; list_add_tail(&evtp->evt_listp, &phba->work_list); spin_unlock_irqrestore(&phba->hbalock, flags); lpfc_worker_wake_up(phba); } /** * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function * @ndlp: pointer to a node-list data structure. * * This routine is the worker-thread handler for processing the @ndlp delayed * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves * the last ELS command from the associated ndlp and invokes the proper ELS * function according to the delayed ELS command to retry the command. **/ void lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp) { struct lpfc_vport *vport = ndlp->vport; uint32_t cmd, retry; spin_lock_irq(&ndlp->lock); cmd = ndlp->nlp_last_elscmd; ndlp->nlp_last_elscmd = 0; if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { spin_unlock_irq(&ndlp->lock); return; } ndlp->nlp_flag &= ~NLP_DELAY_TMO; spin_unlock_irq(&ndlp->lock); /* * If a discovery event readded nlp_delayfunc after timer * firing and before processing the timer, cancel the * nlp_delayfunc. */ del_timer_sync(&ndlp->nlp_delayfunc); retry = ndlp->nlp_retry; ndlp->nlp_retry = 0; switch (cmd) { case ELS_CMD_FLOGI: lpfc_issue_els_flogi(vport, ndlp, retry); break; case ELS_CMD_PLOGI: if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); } break; case ELS_CMD_ADISC: if (!lpfc_issue_els_adisc(vport, ndlp, retry)) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); } break; case ELS_CMD_PRLI: case ELS_CMD_NVMEPRLI: if (!lpfc_issue_els_prli(vport, ndlp, retry)) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); } break; case ELS_CMD_LOGO: if (!lpfc_issue_els_logo(vport, ndlp, retry)) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); } break; case ELS_CMD_FDISC: if (!test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag)) lpfc_issue_els_fdisc(vport, ndlp, retry); break; } return; } /** * lpfc_link_reset - Issue link reset * @vport: pointer to a virtual N_Port data structure. * * This routine performs link reset by sending INIT_LINK mailbox command. * For SLI-3 adapter, link attention interrupt is enabled before issuing * INIT_LINK mailbox command. * * Return code * 0 - Link reset initiated successfully * 1 - Failed to initiate link reset **/ int lpfc_link_reset(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; LPFC_MBOXQ_t *mbox; uint32_t control; int rc; lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "2851 Attempt link reset\n"); mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) { lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "2852 Failed to allocate mbox memory"); return 1; } /* Enable Link attention interrupts */ if (phba->sli_rev <= LPFC_SLI_REV3) { spin_lock_irq(&phba->hbalock); phba->sli.sli_flag |= LPFC_PROCESS_LA; control = readl(phba->HCregaddr); control |= HC_LAINT_ENA; writel(control, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ spin_unlock_irq(&phba->hbalock); } lpfc_init_link(phba, mbox, phba->cfg_topology, phba->cfg_link_speed); mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; mbox->vport = vport; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) { lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "2853 Failed to issue INIT_LINK " "mbox command, rc:x%x\n", rc); mempool_free(mbox, phba->mbox_mem_pool); return 1; } return 0; } /** * lpfc_els_retry - Make retry decision on an els command iocb * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine makes a retry decision on an ELS command IOCB, which has * failed. The following ELS IOCBs use this function for retrying the command * when previously issued command responsed with error status: FLOGI, PLOGI, * PRLI, ADISC and FDISC. Based on the ELS command type and the * returned error status, it makes the decision whether a retry shall be * issued for the command, and whether a retry shall be made immediately or * delayed. In the former case, the corresponding ELS command issuing-function * is called to retry the command. In the later case, the ELS command shall * be posted to the ndlp delayed event and delayed function timer set to the * ndlp for the delayed command issusing. * * Return code * 0 - No retry of els command is made * 1 - Immediate or delayed retry of els command is made **/ static int lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; union lpfc_wqe128 *irsp = &rspiocb->wqe; struct lpfc_nodelist *ndlp = cmdiocb->ndlp; struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf; uint32_t *elscmd; struct ls_rjt stat; int retry = 0, maxretry = lpfc_max_els_tries, delay = 0; int logerr = 0; uint32_t cmd = 0; uint32_t did; int link_reset = 0, rc; u32 ulp_status = get_job_ulpstatus(phba, rspiocb); u32 ulp_word4 = get_job_word4(phba, rspiocb); /* Note: cmd_dmabuf may be 0 for internal driver abort * of delays ELS command. */ if (pcmd && pcmd->virt) { elscmd = (uint32_t *) (pcmd->virt); cmd = *elscmd++; } if (ndlp) did = ndlp->nlp_DID; else { /* We should only hit this case for retrying PLOGI */ did = get_job_els_rsp64_did(phba, rspiocb); ndlp = lpfc_findnode_did(vport, did); if (!ndlp && (cmd != ELS_CMD_PLOGI)) return 0; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Retry ELS: wd7:x%x wd4:x%x did:x%x", *(((uint32_t *)irsp) + 7), ulp_word4, did); switch (ulp_status) { case IOSTAT_FCP_RSP_ERROR: break; case IOSTAT_REMOTE_STOP: if (phba->sli_rev == LPFC_SLI_REV4) { /* This IO was aborted by the target, we don't * know the rxid and because we did not send the * ABTS we cannot generate and RRQ. */ lpfc_set_rrq_active(phba, ndlp, cmdiocb->sli4_lxritag, 0, 0); } break; case IOSTAT_LOCAL_REJECT: switch ((ulp_word4 & IOERR_PARAM_MASK)) { case IOERR_LOOP_OPEN_FAILURE: if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0) delay = 1000; retry = 1; break; case IOERR_ILLEGAL_COMMAND: lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0124 Retry illegal cmd x%x " "retry:x%x delay:x%x\n", cmd, cmdiocb->retry, delay); retry = 1; /* All command's retry policy */ maxretry = 8; if (cmdiocb->retry > 2) delay = 1000; break; case IOERR_NO_RESOURCES: logerr = 1; /* HBA out of resources */ retry = 1; if (cmdiocb->retry > 100) delay = 100; maxretry = 250; break; case IOERR_ILLEGAL_FRAME: delay = 100; retry = 1; break; case IOERR_INVALID_RPI: if (cmd == ELS_CMD_PLOGI && did == NameServer_DID) { /* Continue forever if plogi to */ /* the nameserver fails */ maxretry = 0; delay = 100; } else if (cmd == ELS_CMD_PRLI && ndlp->nlp_state != NLP_STE_PRLI_ISSUE) { /* State-command disagreement. The PRLI was * failed with an invalid rpi meaning there * some unexpected state change. Don't retry. */ maxretry = 0; retry = 0; break; } retry = 1; break; case IOERR_SEQUENCE_TIMEOUT: if (cmd == ELS_CMD_PLOGI && did == NameServer_DID && (cmdiocb->retry + 1) == maxretry) { /* Reset the Link */ link_reset = 1; break; } retry = 1; delay = 100; break; case IOERR_SLI_ABORTED: /* Retry ELS PLOGI command? * Possibly the rport just wasn't ready. */ if (cmd == ELS_CMD_PLOGI) { /* No retry if state change */ if (ndlp && ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) goto out_retry; retry = 1; maxretry = 2; } break; } break; case IOSTAT_NPORT_RJT: case IOSTAT_FABRIC_RJT: if (ulp_word4 & RJT_UNAVAIL_TEMP) { retry = 1; break; } break; case IOSTAT_NPORT_BSY: case IOSTAT_FABRIC_BSY: logerr = 1; /* Fabric / Remote NPort out of resources */ retry = 1; break; case IOSTAT_LS_RJT: stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4); /* Added for Vendor specifc support * Just keep retrying for these Rsn / Exp codes */ if (test_bit(FC_PT2PT, &vport->fc_flag) && cmd == ELS_CMD_NVMEPRLI) { switch (stat.un.b.lsRjtRsnCode) { case LSRJT_UNABLE_TPC: case LSRJT_INVALID_CMD: case LSRJT_LOGICAL_ERR: case LSRJT_CMD_UNSUPPORTED: lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, "0168 NVME PRLI LS_RJT " "reason %x port doesn't " "support NVME, disabling NVME\n", stat.un.b.lsRjtRsnCode); retry = 0; set_bit(FC_PT2PT_NO_NVME, &vport->fc_flag); goto out_retry; } } switch (stat.un.b.lsRjtRsnCode) { case LSRJT_UNABLE_TPC: /* Special case for PRLI LS_RJTs. Recall that lpfc * uses a single routine to issue both PRLI FC4 types. * If the PRLI is rejected because that FC4 type * isn't really supported, don't retry and cause * multiple transport registrations. Otherwise, parse * the reason code/reason code explanation and take the * appropriate action. */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_ELS | LOG_NODE, "0153 ELS cmd x%x LS_RJT by x%x. " "RsnCode x%x RsnCodeExp x%x\n", cmd, did, stat.un.b.lsRjtRsnCode, stat.un.b.lsRjtRsnCodeExp); switch (stat.un.b.lsRjtRsnCodeExp) { case LSEXP_CANT_GIVE_DATA: case LSEXP_CMD_IN_PROGRESS: if (cmd == ELS_CMD_PLOGI) { delay = 1000; maxretry = 48; } retry = 1; break; case LSEXP_REQ_UNSUPPORTED: case LSEXP_NO_RSRC_ASSIGN: /* These explanation codes get no retry. */ if (cmd == ELS_CMD_PRLI || cmd == ELS_CMD_NVMEPRLI) break; fallthrough; default: /* Limit the delay and retry action to a limited * cmd set. There are other ELS commands where * a retry is not expected. */ if (cmd == ELS_CMD_PLOGI || cmd == ELS_CMD_PRLI || cmd == ELS_CMD_NVMEPRLI) { delay = 1000; maxretry = lpfc_max_els_tries + 1; retry = 1; } break; } if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && (cmd == ELS_CMD_FDISC) && (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0125 FDISC Failed (x%x). " "Fabric out of resources\n", stat.un.lsRjtError); lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_RSCS); } break; case LSRJT_LOGICAL_BSY: if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_PRLI) || (cmd == ELS_CMD_NVMEPRLI)) { delay = 1000; maxretry = 48; } else if (cmd == ELS_CMD_FDISC) { /* FDISC retry policy */ maxretry = 48; if (cmdiocb->retry >= 32) delay = 1000; } retry = 1; break; case LSRJT_LOGICAL_ERR: /* There are some cases where switches return this * error when they are not ready and should be returning * Logical Busy. We should delay every time. */ if (cmd == ELS_CMD_FDISC && stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) { maxretry = 3; delay = 1000; retry = 1; } else if (cmd == ELS_CMD_FLOGI && stat.un.b.lsRjtRsnCodeExp == LSEXP_NOTHING_MORE) { vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf; retry = 1; lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0820 FLOGI Failed (x%x). " "BBCredit Not Supported\n", stat.un.lsRjtError); } break; case LSRJT_PROTOCOL_ERR: if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && (cmd == ELS_CMD_FDISC) && ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) || (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID)) ) { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0122 FDISC Failed (x%x). " "Fabric Detected Bad WWN\n", stat.un.lsRjtError); lpfc_vport_set_state(vport, FC_VPORT_FABRIC_REJ_WWN); } break; case LSRJT_VENDOR_UNIQUE: if ((stat.un.b.vendorUnique == 0x45) && (cmd == ELS_CMD_FLOGI)) { goto out_retry; } break; case LSRJT_CMD_UNSUPPORTED: /* lpfc nvmet returns this type of LS_RJT when it * receives an FCP PRLI because lpfc nvmet only * support NVME. ELS request is terminated for FCP4 * on this rport. */ if (stat.un.b.lsRjtRsnCodeExp == LSEXP_REQ_UNSUPPORTED) { if (cmd == ELS_CMD_PRLI) goto out_retry; } break; } break; case IOSTAT_INTERMED_RSP: case IOSTAT_BA_RJT: break; default: break; } if (link_reset) { rc = lpfc_link_reset(vport); if (rc) { /* Do not give up. Retry PLOGI one more time and attempt * link reset if PLOGI fails again. */ retry = 1; delay = 100; goto out_retry; } return 1; } if (did == FDMI_DID) retry = 1; if ((cmd == ELS_CMD_FLOGI) && (phba->fc_topology != LPFC_TOPOLOGY_LOOP) && !lpfc_error_lost_link(vport, ulp_status, ulp_word4)) { /* FLOGI retry policy */ retry = 1; /* retry FLOGI forever */ if (phba->link_flag != LS_LOOPBACK_MODE) maxretry = 0; else maxretry = 2; if (cmdiocb->retry >= 100) delay = 5000; else if (cmdiocb->retry >= 32) delay = 1000; } else if ((cmd == ELS_CMD_FDISC) && !lpfc_error_lost_link(vport, ulp_status, ulp_word4)) { /* retry FDISCs every second up to devloss */ retry = 1; maxretry = vport->cfg_devloss_tmo; delay = 1000; } cmdiocb->retry++; if (maxretry && (cmdiocb->retry >= maxretry)) { phba->fc_stat.elsRetryExceeded++; retry = 0; } if (test_bit(FC_UNLOADING, &vport->load_flag)) retry = 0; out_retry: if (retry) { if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) { /* Stop retrying PLOGI and FDISC if in FCF discovery */ if (phba->fcf.fcf_flag & FCF_DISCOVERY) { lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2849 Stop retry ELS command " "x%x to remote NPORT x%x, " "Data: x%x x%x\n", cmd, did, cmdiocb->retry, delay); return 0; } } /* Retry ELS command <elsCmd> to remote NPORT <did> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0107 Retry ELS command x%x to remote " "NPORT x%x Data: x%x x%x\n", cmd, did, cmdiocb->retry, delay); if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) && ((ulp_status != IOSTAT_LOCAL_REJECT) || ((ulp_word4 & IOERR_PARAM_MASK) != IOERR_NO_RESOURCES))) { /* Don't reset timer for no resources */ /* If discovery / RSCN timer is running, reset it */ if (timer_pending(&vport->fc_disctmo) || test_bit(FC_RSCN_MODE, &vport->fc_flag)) lpfc_set_disctmo(vport); } phba->fc_stat.elsXmitRetry++; if (ndlp && delay) { phba->fc_stat.elsDelayRetry++; ndlp->nlp_retry = cmdiocb->retry; /* delay is specified in milliseconds */ mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(delay)); spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_DELAY_TMO; spin_unlock_irq(&ndlp->lock); ndlp->nlp_prev_state = ndlp->nlp_state; if ((cmd == ELS_CMD_PRLI) || (cmd == ELS_CMD_NVMEPRLI)) lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); else if (cmd != ELS_CMD_ADISC) lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); ndlp->nlp_last_elscmd = cmd; return 1; } switch (cmd) { case ELS_CMD_FLOGI: lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_FDISC: lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_PLOGI: if (ndlp) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); } lpfc_issue_els_plogi(vport, did, cmdiocb->retry); return 1; case ELS_CMD_ADISC: ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_PRLI: case ELS_CMD_NVMEPRLI: ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_LOGO: ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry); return 1; } } /* No retry ELS command <elsCmd> to remote NPORT <did> */ if (logerr) { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0137 No retry ELS command x%x to remote " "NPORT x%x: Out of Resources: Error:x%x/%x " "IoTag x%x\n", cmd, did, ulp_status, ulp_word4, cmdiocb->iotag); } else { lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0108 No retry ELS command x%x to remote " "NPORT x%x Retried:%d Error:x%x/%x " "IoTag x%x nflags x%x\n", cmd, did, cmdiocb->retry, ulp_status, ulp_word4, cmdiocb->iotag, (ndlp ? ndlp->nlp_flag : 0)); } return 0; } /** * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb * @phba: pointer to lpfc hba data structure. * @buf_ptr1: pointer to the lpfc DMA buffer data structure. * * This routine releases the lpfc DMA (Direct Memory Access) buffer(s) * associated with a command IOCB back to the lpfc DMA buffer pool. It first * checks to see whether there is a lpfc DMA buffer associated with the * response of the command IOCB. If so, it will be released before releasing * the lpfc DMA buffer associated with the IOCB itself. * * Return code * 0 - Successfully released lpfc DMA buffer (currently, always return 0) **/ static int lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1) { struct lpfc_dmabuf *buf_ptr; /* Free the response before processing the command. */ if (!list_empty(&buf_ptr1->list)) { list_remove_head(&buf_ptr1->list, buf_ptr, struct lpfc_dmabuf, list); lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); kfree(buf_ptr); } lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys); kfree(buf_ptr1); return 0; } /** * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl * @phba: pointer to lpfc hba data structure. * @buf_ptr: pointer to the lpfc dma buffer data structure. * * This routine releases the lpfc Direct Memory Access (DMA) buffer * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer * pool. * * Return code * 0 - Successfully released lpfc DMA buffer (currently, always return 0) **/ static int lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr) { lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); kfree(buf_ptr); return 0; } /** * lpfc_els_free_iocb - Free a command iocb and its associated resources * @phba: pointer to lpfc hba data structure. * @elsiocb: pointer to lpfc els command iocb data structure. * * This routine frees a command IOCB and its associated resources. The * command IOCB data structure contains the reference to various associated * resources, these fields must be set to NULL if the associated reference * not present: * cmd_dmabuf - reference to cmd. * cmd_dmabuf->next - reference to rsp * rsp_dmabuf - unused * bpl_dmabuf - reference to bpl * * It first properly decrements the reference count held on ndlp for the * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not * set, it invokes the lpfc_els_free_data() routine to release the Direct * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it * adds the DMA buffer the @phba data structure for the delayed release. * If reference to the Buffer Pointer List (BPL) is present, the * lpfc_els_free_bpl() routine is invoked to release the DMA memory * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is * invoked to release the IOCB data structure back to @phba IOCBQ list. * * Return code * 0 - Success (currently, always return 0) **/ int lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb) { struct lpfc_dmabuf *buf_ptr, *buf_ptr1; /* The I/O iocb is complete. Clear the node and first dmbuf */ elsiocb->ndlp = NULL; /* cmd_dmabuf = cmd, cmd_dmabuf->next = rsp, bpl_dmabuf = bpl */ if (elsiocb->cmd_dmabuf) { if (elsiocb->cmd_flag & LPFC_DELAY_MEM_FREE) { /* Firmware could still be in progress of DMAing * payload, so don't free data buffer till after * a hbeat. */ elsiocb->cmd_flag &= ~LPFC_DELAY_MEM_FREE; buf_ptr = elsiocb->cmd_dmabuf; elsiocb->cmd_dmabuf = NULL; if (buf_ptr) { buf_ptr1 = NULL; spin_lock_irq(&phba->hbalock); if (!list_empty(&buf_ptr->list)) { list_remove_head(&buf_ptr->list, buf_ptr1, struct lpfc_dmabuf, list); INIT_LIST_HEAD(&buf_ptr1->list); list_add_tail(&buf_ptr1->list, &phba->elsbuf); phba->elsbuf_cnt++; } INIT_LIST_HEAD(&buf_ptr->list); list_add_tail(&buf_ptr->list, &phba->elsbuf); phba->elsbuf_cnt++; spin_unlock_irq(&phba->hbalock); } } else { buf_ptr1 = elsiocb->cmd_dmabuf; lpfc_els_free_data(phba, buf_ptr1); elsiocb->cmd_dmabuf = NULL; } } if (elsiocb->bpl_dmabuf) { buf_ptr = elsiocb->bpl_dmabuf; lpfc_els_free_bpl(phba, buf_ptr); elsiocb->bpl_dmabuf = NULL; } lpfc_sli_release_iocbq(phba, elsiocb); return 0; } /** * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function to the Logout (LOGO) * Accept (ACC) Response ELS command. This routine is invoked to indicate * the completion of the LOGO process. If the node has transitioned to NPR, * this routine unregisters the RPI if it is still registered. The * lpfc_els_free_iocb() is invoked to release the IOCB data structure. **/ static void lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_nodelist *ndlp = cmdiocb->ndlp; struct lpfc_vport *vport = cmdiocb->vport; u32 ulp_status, ulp_word4; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "ACC LOGO cmpl: status:x%x/x%x did:x%x", ulp_status, ulp_word4, ndlp->nlp_DID); /* ACC to LOGO completes to NPort <nlp_DID> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0109 ACC to LOGO completes to NPort x%x refcnt %d " "Data: x%x x%x x%x\n", ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); /* This clause allows the LOGO ACC to complete and free resources * for the Fabric Domain Controller. It does deliberately skip * the unreg_rpi and release rpi because some fabrics send RDP * requests after logging out from the initiator. */ if (ndlp->nlp_type & NLP_FABRIC && ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK)) goto out; if (ndlp->nlp_state == NLP_STE_NPR_NODE) { /* If PLOGI is being retried, PLOGI completion will cleanup the * node. The NLP_NPR_2B_DISC flag needs to be retained to make * progress on nodes discovered from last RSCN. */ if ((ndlp->nlp_flag & NLP_DELAY_TMO) && (ndlp->nlp_last_elscmd == ELS_CMD_PLOGI)) goto out; if (ndlp->nlp_flag & NLP_RPI_REGISTERED) lpfc_unreg_rpi(vport, ndlp); } out: /* * The driver received a LOGO from the rport and has ACK'd it. * At this point, the driver is done so release the IOCB */ lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); } /** * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * This routine is the completion callback function for unregister default * RPI (Remote Port Index) mailbox command to the @phba. It simply releases * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and * decrements the ndlp reference count held for this completion callback * function. After that, it invokes the lpfc_drop_node to check * whether it is appropriate to release the node. **/ void lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; u32 mbx_flag = pmb->mbox_flag; u32 mbx_cmd = pmb->u.mb.mbxCommand; if (ndlp) { lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, "0006 rpi x%x DID:%x flg:%x %d x%px " "mbx_cmd x%x mbx_flag x%x x%px\n", ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref), ndlp, mbx_cmd, mbx_flag, pmb); /* This ends the default/temporary RPI cleanup logic for this * ndlp and the node and rpi needs to be released. Free the rpi * first on an UNREG_LOGIN and then release the final * references. */ spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; if (mbx_cmd == MBX_UNREG_LOGIN) ndlp->nlp_flag &= ~NLP_UNREG_INP; spin_unlock_irq(&ndlp->lock); lpfc_nlp_put(ndlp); lpfc_drop_node(ndlp->vport, ndlp); } lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); } /** * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function for ELS Response IOCB * command. In normal case, this callback function just properly sets the * nlp_flag bitmap in the ndlp data structure, if the mbox command reference * field in the command IOCB is not NULL, the referred mailbox command will * be send out, and then invokes the lpfc_els_free_iocb() routine to release * the IOCB. **/ static void lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_nodelist *ndlp = cmdiocb->ndlp; struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL; struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL; IOCB_t *irsp; LPFC_MBOXQ_t *mbox = NULL; u32 ulp_status, ulp_word4, tmo, did, iotag; if (!vport) { lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3177 ELS response failed\n"); goto out; } if (cmdiocb->context_un.mbox) mbox = cmdiocb->context_un.mbox; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); did = get_job_els_rsp64_did(phba, cmdiocb); if (phba->sli_rev == LPFC_SLI_REV4) { tmo = get_wqe_tmo(cmdiocb); iotag = get_wqe_reqtag(cmdiocb); } else { irsp = &rspiocb->iocb; tmo = irsp->ulpTimeout; iotag = irsp->ulpIoTag; } /* Check to see if link went down during discovery */ if (!ndlp || lpfc_els_chk_latt(vport)) { if (mbox) lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); goto out; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "ELS rsp cmpl: status:x%x/x%x did:x%x", ulp_status, ulp_word4, did); /* ELS response tag <ulpIoTag> completes */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0110 ELS response tag x%x completes " "Data: x%x x%x x%x x%x x%x x%x x%x x%x %p %p\n", iotag, ulp_status, ulp_word4, tmo, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi, kref_read(&ndlp->kref), mbox, ndlp); if (mbox) { if (ulp_status == 0 && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) { if (!lpfc_unreg_rpi(vport, ndlp) && !test_bit(FC_PT2PT, &vport->fc_flag)) { if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) { lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0314 PLOGI recov " "DID x%x " "Data: x%x x%x x%x\n", ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_rpi, ndlp->nlp_flag); goto out_free_mbox; } } /* Increment reference count to ndlp to hold the * reference to ndlp for the callback function. */ mbox->ctx_ndlp = lpfc_nlp_get(ndlp); if (!mbox->ctx_ndlp) goto out_free_mbox; mbox->vport = vport; if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) { mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; } else { mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE); } ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) != MBX_NOT_FINISHED) goto out; /* Decrement the ndlp reference count we * set for this failed mailbox command. */ lpfc_nlp_put(ndlp); ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; /* ELS rsp: Cannot issue reg_login for <NPortid> */ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0138 ELS rsp: Cannot issue reg_login for x%x " "Data: x%x x%x x%x\n", ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); } out_free_mbox: lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); } out: if (ndlp && shost) { spin_lock_irq(&ndlp->lock); if (mbox) ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN; ndlp->nlp_flag &= ~NLP_RM_DFLT_RPI; spin_unlock_irq(&ndlp->lock); } /* An SLI4 NPIV instance wants to drop the node at this point under * these conditions and release the RPI. */ if (phba->sli_rev == LPFC_SLI_REV4 && vport && vport->port_type == LPFC_NPIV_PORT && !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) { if (ndlp->nlp_flag & NLP_RELEASE_RPI) { if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE && ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi); spin_lock_irq(&ndlp->lock); ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; ndlp->nlp_flag &= ~NLP_RELEASE_RPI; spin_unlock_irq(&ndlp->lock); } lpfc_drop_node(vport, ndlp); } else if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE && ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE && ndlp->nlp_state != NLP_STE_PRLI_ISSUE) { /* Drop ndlp if there is no planned or outstanding * issued PRLI. * * In cases when the ndlp is acting as both an initiator * and target function, let our issued PRLI determine * the final ndlp kref drop. */ lpfc_drop_node(vport, ndlp); } } /* Release the originating I/O reference. */ lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); return; } /** * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command * @vport: pointer to a host virtual N_Port data structure. * @flag: the els command code to be accepted. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * @mbox: pointer to the driver internal queue element for mailbox command. * * This routine prepares and issues an Accept (ACC) response IOCB * command. It uses the @flag to properly set up the IOCB field for the * specific ACC response command to be issued and invokes the * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a * @mbox pointer is passed in, it will be put into the context_un.mbox * field of the IOCB for the completion callback function to issue the * mailbox command to the HBA later when callback is invoked. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the corresponding * response ELS IOCB command. * * Return code * 0 - Successfully issued acc response * 1 - Failed to issue acc response **/ int lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) { struct lpfc_hba *phba = vport->phba; IOCB_t *icmd; IOCB_t *oldcmd; union lpfc_wqe128 *wqe; union lpfc_wqe128 *oldwqe = &oldiocb->wqe; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; struct serv_parm *sp; uint16_t cmdsize; int rc; ELS_PKT *els_pkt_ptr; struct fc_els_rdf_resp *rdf_resp; switch (flag) { case ELS_CMD_ACC: cmdsize = sizeof(uint32_t); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) { spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~NLP_LOGO_ACC; spin_unlock_irq(&ndlp->lock); return 1; } if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; /* XRI / rx_id */ bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, bf_get(wqe_ctxt_tag, &oldwqe->xmit_els_rsp.wqe_com)); /* oxid */ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, bf_get(wqe_rcvoxid, &oldwqe->xmit_els_rsp.wqe_com)); } else { icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; } pcmd = elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_ACC; pcmd += sizeof(uint32_t); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC: did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, 0); break; case ELS_CMD_FLOGI: case ELS_CMD_PLOGI: cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t)); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1; if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; /* XRI / rx_id */ bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, bf_get(wqe_ctxt_tag, &oldwqe->xmit_els_rsp.wqe_com)); /* oxid */ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, bf_get(wqe_rcvoxid, &oldwqe->xmit_els_rsp.wqe_com)); } else { icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; } pcmd = (u8 *)elsiocb->cmd_dmabuf->virt; if (mbox) elsiocb->context_un.mbox = mbox; *((uint32_t *) (pcmd)) = ELS_CMD_ACC; pcmd += sizeof(uint32_t); sp = (struct serv_parm *)pcmd; if (flag == ELS_CMD_FLOGI) { /* Copy the received service parameters back */ memcpy(sp, &phba->fc_fabparam, sizeof(struct serv_parm)); /* Clear the F_Port bit */ sp->cmn.fPort = 0; /* Mark all class service parameters as invalid */ sp->cls1.classValid = 0; sp->cls2.classValid = 0; sp->cls3.classValid = 0; sp->cls4.classValid = 0; /* Copy our worldwide names */ memcpy(&sp->portName, &vport->fc_sparam.portName, sizeof(struct lpfc_name)); memcpy(&sp->nodeName, &vport->fc_sparam.nodeName, sizeof(struct lpfc_name)); } else { memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm)); sp->cmn.valid_vendor_ver_level = 0; memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion)); sp->cmn.bbRcvSizeMsb &= 0xF; /* If our firmware supports this feature, convey that * info to the target using the vendor specific field. */ if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) { sp->cmn.valid_vendor_ver_level = 1; sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID); sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP); } } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC FLOGI/PLOGI: did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, 0); break; case ELS_CMD_PRLO: cmdsize = sizeof(uint32_t) + sizeof(PRLO); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_PRLO); if (!elsiocb) return 1; if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; /* XRI / rx_id */ bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, bf_get(wqe_ctxt_tag, &oldwqe->xmit_els_rsp.wqe_com)); /* oxid */ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, bf_get(wqe_rcvoxid, &oldwqe->xmit_els_rsp.wqe_com)); } else { icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; } pcmd = (u8 *) elsiocb->cmd_dmabuf->virt; memcpy(pcmd, oldiocb->cmd_dmabuf->virt, sizeof(uint32_t) + sizeof(PRLO)); *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC; els_pkt_ptr = (ELS_PKT *) pcmd; els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC PRLO: did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, 0); break; case ELS_CMD_RDF: cmdsize = sizeof(*rdf_resp); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1; if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; /* XRI / rx_id */ bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, bf_get(wqe_ctxt_tag, &oldwqe->xmit_els_rsp.wqe_com)); /* oxid */ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, bf_get(wqe_rcvoxid, &oldwqe->xmit_els_rsp.wqe_com)); } else { icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; } pcmd = (u8 *)elsiocb->cmd_dmabuf->virt; rdf_resp = (struct fc_els_rdf_resp *)pcmd; memset(rdf_resp, 0, sizeof(*rdf_resp)); rdf_resp->acc_hdr.la_cmd = ELS_LS_ACC; /* FC-LS-5 specifies desc_list_len shall be set to 12 */ rdf_resp->desc_list_len = cpu_to_be32(12); /* FC-LS-5 specifies LS REQ Information descriptor */ rdf_resp->lsri.desc_tag = cpu_to_be32(1); rdf_resp->lsri.desc_len = cpu_to_be32(sizeof(u32)); rdf_resp->lsri.rqst_w0.cmd = ELS_RDF; break; default: return 1; } if (ndlp->nlp_flag & NLP_LOGO_ACC) { spin_lock_irq(&ndlp->lock); if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED || ndlp->nlp_flag & NLP_REG_LOGIN_SEND)) ndlp->nlp_flag &= ~NLP_LOGO_ACC; spin_unlock_irq(&ndlp->lock); elsiocb->cmd_cmpl = lpfc_cmpl_els_logo_acc; } else { elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; } phba->fc_stat.elsXmitACC++; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } /* Xmit ELS ACC response tag <ulpIoTag> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, " "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x " "RPI: x%x, fc_flag x%lx refcnt %d\n", rc, elsiocb->iotag, elsiocb->sli4_xritag, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi, vport->fc_flag, kref_read(&ndlp->kref)); return 0; } /** * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command * @vport: pointer to a virtual N_Port data structure. * @rejectError: reject response to issue * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * @mbox: pointer to the driver internal queue element for mailbox command. * * This routine prepares and issue an Reject (RJT) response IOCB * command. If a @mbox pointer is passed in, it will be put into the * context_un.mbox field of the IOCB for the completion callback function * to issue to the HBA later. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the reject response * ELS IOCB command. * * Return code * 0 - Successfully issued reject response * 1 - Failed to issue reject response **/ int lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) { int rc; struct lpfc_hba *phba = vport->phba; IOCB_t *icmd; IOCB_t *oldcmd; union lpfc_wqe128 *wqe; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; cmdsize = 2 * sizeof(uint32_t); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT); if (!elsiocb) return 1; if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, get_job_rcvoxid(phba, oldiocb)); } else { icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; } pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT; pcmd += sizeof(uint32_t); *((uint32_t *) (pcmd)) = rejectError; if (mbox) elsiocb->context_un.mbox = mbox; /* Xmit ELS RJT <err> response tag <ulpIoTag> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0129 Xmit ELS RJT x%x response tag x%x " "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " "rpi x%x\n", rejectError, elsiocb->iotag, get_job_ulpcontext(phba, elsiocb), ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue LS_RJT: did:x%x flg:x%x err:x%x", ndlp->nlp_DID, ndlp->nlp_flag, rejectError); phba->fc_stat.elsXmitLSRJT++; elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } /* The NPIV instance is rejecting this unsolicited ELS. Make sure the * node's assigned RPI gets released provided this node is not already * registered with the transport. */ if (phba->sli_rev == LPFC_SLI_REV4 && vport->port_type == LPFC_NPIV_PORT && !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) { spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_RELEASE_RPI; spin_unlock_irq(&ndlp->lock); } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } return 0; } /** * lpfc_issue_els_edc_rsp - Exchange Diagnostic Capabilities with the fabric. * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to the original lpfc command iocb data structure. * @ndlp: NPort to where rsp is directed * * This routine issues an EDC ACC RSP to the F-Port Controller to communicate * this N_Port's support of hardware signals in its Congestion * Capabilities Descriptor. * * Return code * 0 - Successfully issued edc rsp command * 1 - Failed to issue edc rsp command **/ static int lpfc_issue_els_edc_rsp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; struct fc_els_edc_resp *edc_rsp; struct fc_tlv_desc *tlv; struct lpfc_iocbq *elsiocb; IOCB_t *icmd, *cmd; union lpfc_wqe128 *wqe; u32 cgn_desc_size, lft_desc_size; u16 cmdsize; uint8_t *pcmd; int rc; cmdsize = sizeof(struct fc_els_edc_resp); cgn_desc_size = sizeof(struct fc_diag_cg_sig_desc); lft_desc_size = (lpfc_link_is_lds_capable(phba)) ? sizeof(struct fc_diag_lnkflt_desc) : 0; cmdsize += cgn_desc_size + lft_desc_size; elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, cmdiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1; if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, get_job_ulpcontext(phba, cmdiocb)); /* Xri / rx_id */ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, get_job_rcvoxid(phba, cmdiocb)); } else { icmd = &elsiocb->iocb; cmd = &cmdiocb->iocb; icmd->ulpContext = cmd->ulpContext; /* Xri / rx_id */ icmd->unsli3.rcvsli3.ox_id = cmd->unsli3.rcvsli3.ox_id; } pcmd = elsiocb->cmd_dmabuf->virt; memset(pcmd, 0, cmdsize); edc_rsp = (struct fc_els_edc_resp *)pcmd; edc_rsp->acc_hdr.la_cmd = ELS_LS_ACC; edc_rsp->desc_list_len = cpu_to_be32(sizeof(struct fc_els_lsri_desc) + cgn_desc_size + lft_desc_size); edc_rsp->lsri.desc_tag = cpu_to_be32(ELS_DTAG_LS_REQ_INFO); edc_rsp->lsri.desc_len = cpu_to_be32( FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_els_lsri_desc)); edc_rsp->lsri.rqst_w0.cmd = ELS_EDC; tlv = edc_rsp->desc; lpfc_format_edc_cgn_desc(phba, tlv); tlv = fc_tlv_next_desc(tlv); if (lft_desc_size) lpfc_format_edc_lft_desc(phba, tlv); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue EDC ACC: did:x%x flg:x%x refcnt %d", ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; phba->fc_stat.elsXmitACC++; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } /* Xmit ELS ACC response tag <ulpIoTag> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0152 Xmit EDC ACC response Status: x%x, IoTag: x%x, " "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x " "RPI: x%x, fc_flag x%lx\n", rc, elsiocb->iotag, elsiocb->sli4_xritag, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi, vport->fc_flag); return 0; } /** * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd * @vport: pointer to a virtual N_Port data structure. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine prepares and issues an Accept (ACC) response to Address * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB * and invokes the lpfc_sli_issue_iocb() routine to send out the command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the ADISC Accept response * ELS IOCB command. * * Return code * 0 - Successfully issued acc adisc response * 1 - Failed to issue adisc acc response **/ int lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; ADISC *ap; IOCB_t *icmd, *oldcmd; union lpfc_wqe128 *wqe; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; int rc; u32 ulp_context; cmdsize = sizeof(uint32_t) + sizeof(ADISC); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1; if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; /* XRI / rx_id */ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, get_job_ulpcontext(phba, oldiocb)); ulp_context = get_job_ulpcontext(phba, elsiocb); /* oxid */ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, get_job_rcvoxid(phba, oldiocb)); } else { icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ ulp_context = elsiocb->iocb.ulpContext; icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; } /* Xmit ADISC ACC response tag <ulpIoTag> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0130 Xmit ADISC ACC response iotag x%x xri: " "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n", elsiocb->iotag, ulp_context, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_ACC; pcmd += sizeof(uint32_t); ap = (ADISC *) (pcmd); ap->hardAL_PA = phba->fc_pref_ALPA; memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name)); memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); ap->DID = be32_to_cpu(vport->fc_myDID); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC ADISC: did:x%x flg:x%x refcnt %d", ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); phba->fc_stat.elsXmitACC++; elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } return 0; } /** * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd * @vport: pointer to a virtual N_Port data structure. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine prepares and issues an Accept (ACC) response to Process * Login (PRLI) ELS command. It simply prepares the payload of the IOCB * and invokes the lpfc_sli_issue_iocb() routine to send out the command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the PRLI Accept response * ELS IOCB command. * * Return code * 0 - Successfully issued acc prli response * 1 - Failed to issue acc prli response **/ int lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; PRLI *npr; struct lpfc_nvme_prli *npr_nvme; lpfc_vpd_t *vpd; IOCB_t *icmd; IOCB_t *oldcmd; union lpfc_wqe128 *wqe; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; uint32_t prli_fc4_req, *req_payload; struct lpfc_dmabuf *req_buf; int rc; u32 elsrspcmd, ulp_context; /* Need the incoming PRLI payload to determine if the ACC is for an * FC4 or NVME PRLI type. The PRLI type is at word 1. */ req_buf = oldiocb->cmd_dmabuf; req_payload = (((uint32_t *)req_buf->virt) + 1); /* PRLI type payload is at byte 3 for FCP or NVME. */ prli_fc4_req = be32_to_cpu(*req_payload); prli_fc4_req = (prli_fc4_req >> 24) & 0xff; lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "6127 PRLI_ACC: Req Type x%x, Word1 x%08x\n", prli_fc4_req, *((uint32_t *)req_payload)); if (prli_fc4_req == PRLI_FCP_TYPE) { cmdsize = sizeof(uint32_t) + sizeof(PRLI); elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)); } else if (prli_fc4_req == PRLI_NVME_TYPE) { cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli); elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK)); } else { return 1; } elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, elsrspcmd); if (!elsiocb) return 1; if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */ ulp_context = get_job_ulpcontext(phba, elsiocb); bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, get_job_rcvoxid(phba, oldiocb)); } else { icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ ulp_context = elsiocb->iocb.ulpContext; icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; } /* Xmit PRLI ACC response tag <ulpIoTag> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0131 Xmit PRLI ACC response tag x%x xri x%x, " "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", elsiocb->iotag, ulp_context, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; memset(pcmd, 0, cmdsize); *((uint32_t *)(pcmd)) = elsrspcmd; pcmd += sizeof(uint32_t); /* For PRLI, remainder of payload is PRLI parameter page */ vpd = &phba->vpd; if (prli_fc4_req == PRLI_FCP_TYPE) { /* * If the remote port is a target and our firmware version * is 3.20 or later, set the following bits for FC-TAPE * support. */ npr = (PRLI *) pcmd; if ((ndlp->nlp_type & NLP_FCP_TARGET) && (vpd->rev.feaLevelHigh >= 0x02)) { npr->ConfmComplAllowed = 1; npr->Retry = 1; npr->TaskRetryIdReq = 1; } npr->acceptRspCode = PRLI_REQ_EXECUTED; /* Set image pair for complementary pairs only. */ if (ndlp->nlp_type & NLP_FCP_TARGET) npr->estabImagePair = 1; else npr->estabImagePair = 0; npr->readXferRdyDis = 1; npr->ConfmComplAllowed = 1; npr->prliType = PRLI_FCP_TYPE; npr->initiatorFunc = 1; /* Xmit PRLI ACC response tag <ulpIoTag> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE | LOG_DISCOVERY, "6014 FCP issue PRLI ACC imgpair %d " "retry %d task %d\n", npr->estabImagePair, npr->Retry, npr->TaskRetryIdReq); } else if (prli_fc4_req == PRLI_NVME_TYPE) { /* Respond with an NVME PRLI Type */ npr_nvme = (struct lpfc_nvme_prli *) pcmd; bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE); bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */ bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED); if (phba->nvmet_support) { bf_set(prli_tgt, npr_nvme, 1); bf_set(prli_disc, npr_nvme, 1); if (phba->cfg_nvme_enable_fb) { bf_set(prli_fba, npr_nvme, 1); /* TBD. Target mode needs to post buffers * that support the configured first burst * byte size. */ bf_set(prli_fb_sz, npr_nvme, phba->cfg_nvmet_fb_size); } } else { bf_set(prli_init, npr_nvme, 1); } lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, "6015 NVME issue PRLI ACC word1 x%08x " "word4 x%08x word5 x%08x flag x%x, " "fcp_info x%x nlp_type x%x\n", npr_nvme->word1, npr_nvme->word4, npr_nvme->word5, ndlp->nlp_flag, ndlp->nlp_fcp_info, ndlp->nlp_type); npr_nvme->word1 = cpu_to_be32(npr_nvme->word1); npr_nvme->word4 = cpu_to_be32(npr_nvme->word4); npr_nvme->word5 = cpu_to_be32(npr_nvme->word5); } else lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n", prli_fc4_req, ndlp->nlp_fc4_type, ndlp->nlp_DID); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC PRLI: did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); phba->fc_stat.elsXmitACC++; elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } return 0; } /** * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command * @vport: pointer to a virtual N_Port data structure. * @format: rnid command format. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine issues a Request Node Identification Data (RNID) Accept * (ACC) response. It constructs the RNID ACC response command according to * the proper @format and then calls the lpfc_sli_issue_iocb() routine to * issue the response. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function. * * Return code * 0 - Successfully issued acc rnid response * 1 - Failed to issue acc rnid response **/ static int lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; RNID *rn; IOCB_t *icmd, *oldcmd; union lpfc_wqe128 *wqe; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; int rc; u32 ulp_context; cmdsize = sizeof(uint32_t) + sizeof(uint32_t) + (2 * sizeof(struct lpfc_name)); if (format) cmdsize += sizeof(RNID_TOP_DISC); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1; if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */ ulp_context = get_job_ulpcontext(phba, elsiocb); bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, get_job_rcvoxid(phba, oldiocb)); } else { icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ ulp_context = elsiocb->iocb.ulpContext; icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; } /* Xmit RNID ACC response tag <ulpIoTag> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0132 Xmit RNID ACC response tag x%x xri x%x\n", elsiocb->iotag, ulp_context); pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_ACC; pcmd += sizeof(uint32_t); memset(pcmd, 0, sizeof(RNID)); rn = (RNID *) (pcmd); rn->Format = format; rn->CommonLen = (2 * sizeof(struct lpfc_name)); memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name)); memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); switch (format) { case 0: rn->SpecificLen = 0; break; case RNID_TOPOLOGY_DISC: rn->SpecificLen = sizeof(RNID_TOP_DISC); memcpy(&rn->un.topologyDisc.portName, &vport->fc_portname, sizeof(struct lpfc_name)); rn->un.topologyDisc.unitType = RNID_HBA; rn->un.topologyDisc.physPort = 0; rn->un.topologyDisc.attachedNodes = 0; break; default: rn->CommonLen = 0; rn->SpecificLen = 0; break; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC RNID: did:x%x flg:x%x refcnt %d", ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); phba->fc_stat.elsXmitACC++; elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } return 0; } /** * lpfc_els_clear_rrq - Clear the rq that this rrq describes. * @vport: pointer to a virtual N_Port data structure. * @iocb: pointer to the lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * Return **/ static void lpfc_els_clear_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; uint8_t *pcmd; struct RRQ *rrq; uint16_t rxid; uint16_t xri; struct lpfc_node_rrq *prrq; pcmd = (uint8_t *)iocb->cmd_dmabuf->virt; pcmd += sizeof(uint32_t); rrq = (struct RRQ *)pcmd; rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg); rxid = bf_get(rrq_rxid, rrq); lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x" " x%x x%x\n", be32_to_cpu(bf_get(rrq_did, rrq)), bf_get(rrq_oxid, rrq), rxid, get_wqe_reqtag(iocb), get_job_ulpcontext(phba, iocb)); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Clear RRQ: did:x%x flg:x%x exchg:x%.08x", ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg); if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq))) xri = bf_get(rrq_oxid, rrq); else xri = rxid; prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID); if (prrq) lpfc_clr_rrq_active(phba, xri, prrq); return; } /** * lpfc_els_rsp_echo_acc - Issue echo acc response * @vport: pointer to a virtual N_Port data structure. * @data: pointer to echo data to return in the accept. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * Return code * 0 - Successfully issued acc echo response * 1 - Failed to issue acc echo response **/ static int lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; IOCB_t *icmd, *oldcmd; union lpfc_wqe128 *wqe; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; int rc; u32 ulp_context; if (phba->sli_rev == LPFC_SLI_REV4) cmdsize = oldiocb->wcqe_cmpl.total_data_placed; else cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len; /* The accumulated length can exceed the BPL_SIZE. For * now, use this as the limit */ if (cmdsize > LPFC_BPL_SIZE) cmdsize = LPFC_BPL_SIZE; elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1; if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */ ulp_context = get_job_ulpcontext(phba, elsiocb); bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, get_job_rcvoxid(phba, oldiocb)); } else { icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ ulp_context = elsiocb->iocb.ulpContext; icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; } /* Xmit ECHO ACC response tag <ulpIoTag> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2876 Xmit ECHO ACC response tag x%x xri x%x\n", elsiocb->iotag, ulp_context); pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_ACC; pcmd += sizeof(uint32_t); memcpy(pcmd, data, cmdsize - sizeof(uint32_t)); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC ECHO: did:x%x flg:x%x refcnt %d", ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); phba->fc_stat.elsXmitACC++; elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } return 0; } /** * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine issues Address Discover (ADISC) ELS commands to those * N_Ports which are in node port recovery state and ADISC has not been issued * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the * lpfc_issue_els_adisc() routine, the per @vport number of discover count * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC * IOCBs quit for later pick up. On the other hand, after walking through * all the ndlps with the @vport and there is none ADISC IOCB issued, the * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is * no more ADISC need to be sent. * * Return code * The number of N_Ports with adisc issued. **/ int lpfc_els_disc_adisc(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp, *next_ndlp; int sentadisc = 0; /* go thru NPR nodes and issue any remaining ELS ADISCs */ list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { if (ndlp->nlp_state != NLP_STE_NPR_NODE || !(ndlp->nlp_flag & NLP_NPR_ADISC)) continue; spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~NLP_NPR_ADISC; spin_unlock_irq(&ndlp->lock); if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { /* This node was marked for ADISC but was not picked * for discovery. This is possible if the node was * missing in gidft response. * * At time of marking node for ADISC, we skipped unreg * from backend */ lpfc_nlp_unreg_node(vport, ndlp); lpfc_unreg_rpi(vport, ndlp); continue; } ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); lpfc_issue_els_adisc(vport, ndlp, 0); sentadisc++; vport->num_disc_nodes++; if (vport->num_disc_nodes >= vport->cfg_discovery_threads) { set_bit(FC_NLP_MORE, &vport->fc_flag); break; } } if (sentadisc == 0) clear_bit(FC_NLP_MORE, &vport->fc_flag); return sentadisc; } /** * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc * @vport: pointer to a host virtual N_Port data structure. * * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports * which are in node port recovery state, with a @vport. Each time an ELS * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine, * the per @vport number of discover count (num_disc_nodes) shall be * incremented. If the num_disc_nodes reaches a pre-configured threshold * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for * later pick up. On the other hand, after walking through all the ndlps with * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC * PLOGI need to be sent. * * Return code * The number of N_Ports with plogi issued. **/ int lpfc_els_disc_plogi(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp, *next_ndlp; int sentplogi = 0; /* go thru NPR nodes and issue any remaining ELS PLOGIs */ list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { if (ndlp->nlp_state == NLP_STE_NPR_NODE && (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 && (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 && (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); sentplogi++; vport->num_disc_nodes++; if (vport->num_disc_nodes >= vport->cfg_discovery_threads) { set_bit(FC_NLP_MORE, &vport->fc_flag); break; } } } lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "6452 Discover PLOGI %d flag x%lx\n", sentplogi, vport->fc_flag); if (sentplogi) lpfc_set_disctmo(vport); else clear_bit(FC_NLP_MORE, &vport->fc_flag); return sentplogi; } static uint32_t lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc, uint32_t word0) { desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG); desc->payload.els_req = word0; desc->length = cpu_to_be32(sizeof(desc->payload)); return sizeof(struct fc_rdp_link_service_desc); } static uint32_t lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc, uint8_t *page_a0, uint8_t *page_a2) { uint16_t wavelength; uint16_t temperature; uint16_t rx_power; uint16_t tx_bias; uint16_t tx_power; uint16_t vcc; uint16_t flag = 0; struct sff_trasnceiver_codes_byte4 *trasn_code_byte4; struct sff_trasnceiver_codes_byte5 *trasn_code_byte5; desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG); trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *) &page_a0[SSF_TRANSCEIVER_CODE_B4]; trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *) &page_a0[SSF_TRANSCEIVER_CODE_B5]; if ((trasn_code_byte4->fc_sw_laser) || (trasn_code_byte5->fc_sw_laser_sl) || (trasn_code_byte5->fc_sw_laser_sn)) { /* check if its short WL */ flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT); } else if (trasn_code_byte4->fc_lw_laser) { wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) | page_a0[SSF_WAVELENGTH_B0]; if (wavelength == SFP_WAVELENGTH_LC1310) flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT; if (wavelength == SFP_WAVELENGTH_LL1550) flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT; } /* check if its SFP+ */ flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ? SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN) << SFP_FLAG_CT_SHIFT; /* check if its OPTICAL */ flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ? SFP_FLAG_IS_OPTICAL_PORT : 0) << SFP_FLAG_IS_OPTICAL_SHIFT; temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 | page_a2[SFF_TEMPERATURE_B0]); vcc = (page_a2[SFF_VCC_B1] << 8 | page_a2[SFF_VCC_B0]); tx_power = (page_a2[SFF_TXPOWER_B1] << 8 | page_a2[SFF_TXPOWER_B0]); tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 | page_a2[SFF_TX_BIAS_CURRENT_B0]); rx_power = (page_a2[SFF_RXPOWER_B1] << 8 | page_a2[SFF_RXPOWER_B0]); desc->sfp_info.temperature = cpu_to_be16(temperature); desc->sfp_info.rx_power = cpu_to_be16(rx_power); desc->sfp_info.tx_bias = cpu_to_be16(tx_bias); desc->sfp_info.tx_power = cpu_to_be16(tx_power); desc->sfp_info.vcc = cpu_to_be16(vcc); desc->sfp_info.flags = cpu_to_be16(flag); desc->length = cpu_to_be32(sizeof(desc->sfp_info)); return sizeof(struct fc_rdp_sfp_desc); } static uint32_t lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc, READ_LNK_VAR *stat) { uint32_t type; desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG); type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT; desc->info.port_type = cpu_to_be32(type); desc->info.link_status.link_failure_cnt = cpu_to_be32(stat->linkFailureCnt); desc->info.link_status.loss_of_synch_cnt = cpu_to_be32(stat->lossSyncCnt); desc->info.link_status.loss_of_signal_cnt = cpu_to_be32(stat->lossSignalCnt); desc->info.link_status.primitive_seq_proto_err = cpu_to_be32(stat->primSeqErrCnt); desc->info.link_status.invalid_trans_word = cpu_to_be32(stat->invalidXmitWord); desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt); desc->length = cpu_to_be32(sizeof(desc->info)); return sizeof(struct fc_rdp_link_error_status_desc); } static uint32_t lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat, struct lpfc_vport *vport) { uint32_t bbCredit; desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG); bbCredit = vport->fc_sparam.cmn.bbCreditLsb | (vport->fc_sparam.cmn.bbCreditMsb << 8); desc->bbc_info.port_bbc = cpu_to_be32(bbCredit); if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) { bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb | (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8); desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit); } else { desc->bbc_info.attached_port_bbc = 0; } desc->bbc_info.rtt = 0; desc->length = cpu_to_be32(sizeof(desc->bbc_info)); return sizeof(struct fc_rdp_bbc_desc); } static uint32_t lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba, struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2) { uint32_t flags = 0; desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM]; desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM]; desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING]; desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING]; if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE) flags |= RDP_OET_HIGH_ALARM; if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE) flags |= RDP_OET_LOW_ALARM; if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE) flags |= RDP_OET_HIGH_WARNING; if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE) flags |= RDP_OET_LOW_WARNING; flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT); desc->oed_info.function_flags = cpu_to_be32(flags); desc->length = cpu_to_be32(sizeof(desc->oed_info)); return sizeof(struct fc_rdp_oed_sfp_desc); } static uint32_t lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba, struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2) { uint32_t flags = 0; desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM]; desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM]; desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING]; desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING]; if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE) flags |= RDP_OET_HIGH_ALARM; if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE) flags |= RDP_OET_LOW_ALARM; if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE) flags |= RDP_OET_HIGH_WARNING; if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE) flags |= RDP_OET_LOW_WARNING; flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT); desc->oed_info.function_flags = cpu_to_be32(flags); desc->length = cpu_to_be32(sizeof(desc->oed_info)); return sizeof(struct fc_rdp_oed_sfp_desc); } static uint32_t lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba, struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2) { uint32_t flags = 0; desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM]; desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM]; desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING]; desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING]; if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS) flags |= RDP_OET_HIGH_ALARM; if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS) flags |= RDP_OET_LOW_ALARM; if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS) flags |= RDP_OET_HIGH_WARNING; if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS) flags |= RDP_OET_LOW_WARNING; flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT); desc->oed_info.function_flags = cpu_to_be32(flags); desc->length = cpu_to_be32(sizeof(desc->oed_info)); return sizeof(struct fc_rdp_oed_sfp_desc); } static uint32_t lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba, struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2) { uint32_t flags = 0; desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM]; desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM]; desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING]; desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING]; if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER) flags |= RDP_OET_HIGH_ALARM; if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER) flags |= RDP_OET_LOW_ALARM; if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER) flags |= RDP_OET_HIGH_WARNING; if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER) flags |= RDP_OET_LOW_WARNING; flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT); desc->oed_info.function_flags = cpu_to_be32(flags); desc->length = cpu_to_be32(sizeof(desc->oed_info)); return sizeof(struct fc_rdp_oed_sfp_desc); } static uint32_t lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba, struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2) { uint32_t flags = 0; desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM]; desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM]; desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING]; desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING]; if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER) flags |= RDP_OET_HIGH_ALARM; if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER) flags |= RDP_OET_LOW_ALARM; if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER) flags |= RDP_OET_HIGH_WARNING; if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER) flags |= RDP_OET_LOW_WARNING; flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT); desc->oed_info.function_flags = cpu_to_be32(flags); desc->length = cpu_to_be32(sizeof(desc->oed_info)); return sizeof(struct fc_rdp_oed_sfp_desc); } static uint32_t lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc, uint8_t *page_a0, struct lpfc_vport *vport) { desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG); memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16); memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16); memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16); memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4); memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8); desc->length = cpu_to_be32(sizeof(desc->opd_info)); return sizeof(struct fc_rdp_opd_sfp_desc); } static uint32_t lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat) { if (bf_get(lpfc_read_link_stat_gec2, stat) == 0) return 0; desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG); desc->info.CorrectedBlocks = cpu_to_be32(stat->fecCorrBlkCount); desc->info.UncorrectableBlocks = cpu_to_be32(stat->fecUncorrBlkCount); desc->length = cpu_to_be32(sizeof(desc->info)); return sizeof(struct fc_fec_rdp_desc); } static uint32_t lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba) { uint16_t rdp_cap = 0; uint16_t rdp_speed; desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG); switch (phba->fc_linkspeed) { case LPFC_LINK_SPEED_1GHZ: rdp_speed = RDP_PS_1GB; break; case LPFC_LINK_SPEED_2GHZ: rdp_speed = RDP_PS_2GB; break; case LPFC_LINK_SPEED_4GHZ: rdp_speed = RDP_PS_4GB; break; case LPFC_LINK_SPEED_8GHZ: rdp_speed = RDP_PS_8GB; break; case LPFC_LINK_SPEED_10GHZ: rdp_speed = RDP_PS_10GB; break; case LPFC_LINK_SPEED_16GHZ: rdp_speed = RDP_PS_16GB; break; case LPFC_LINK_SPEED_32GHZ: rdp_speed = RDP_PS_32GB; break; case LPFC_LINK_SPEED_64GHZ: rdp_speed = RDP_PS_64GB; break; case LPFC_LINK_SPEED_128GHZ: rdp_speed = RDP_PS_128GB; break; case LPFC_LINK_SPEED_256GHZ: rdp_speed = RDP_PS_256GB; break; default: rdp_speed = RDP_PS_UNKNOWN; break; } desc->info.port_speed.speed = cpu_to_be16(rdp_speed); if (phba->lmt & LMT_256Gb) rdp_cap |= RDP_PS_256GB; if (phba->lmt & LMT_128Gb) rdp_cap |= RDP_PS_128GB; if (phba->lmt & LMT_64Gb) rdp_cap |= RDP_PS_64GB; if (phba->lmt & LMT_32Gb) rdp_cap |= RDP_PS_32GB; if (phba->lmt & LMT_16Gb) rdp_cap |= RDP_PS_16GB; if (phba->lmt & LMT_10Gb) rdp_cap |= RDP_PS_10GB; if (phba->lmt & LMT_8Gb) rdp_cap |= RDP_PS_8GB; if (phba->lmt & LMT_4Gb) rdp_cap |= RDP_PS_4GB; if (phba->lmt & LMT_2Gb) rdp_cap |= RDP_PS_2GB; if (phba->lmt & LMT_1Gb) rdp_cap |= RDP_PS_1GB; if (rdp_cap == 0) rdp_cap = RDP_CAP_UNKNOWN; if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO) rdp_cap |= RDP_CAP_USER_CONFIGURED; desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap); desc->length = cpu_to_be32(sizeof(desc->info)); return sizeof(struct fc_rdp_port_speed_desc); } static uint32_t lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc, struct lpfc_vport *vport) { desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG); memcpy(desc->port_names.wwnn, &vport->fc_nodename, sizeof(desc->port_names.wwnn)); memcpy(desc->port_names.wwpn, &vport->fc_portname, sizeof(desc->port_names.wwpn)); desc->length = cpu_to_be32(sizeof(desc->port_names)); return sizeof(struct fc_rdp_port_name_desc); } static uint32_t lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc, struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) { desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG); if (test_bit(FC_FABRIC, &vport->fc_flag)) { memcpy(desc->port_names.wwnn, &vport->fabric_nodename, sizeof(desc->port_names.wwnn)); memcpy(desc->port_names.wwpn, &vport->fabric_portname, sizeof(desc->port_names.wwpn)); } else { /* Point to Point */ memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename, sizeof(desc->port_names.wwnn)); memcpy(desc->port_names.wwpn, &ndlp->nlp_portname, sizeof(desc->port_names.wwpn)); } desc->length = cpu_to_be32(sizeof(desc->port_names)); return sizeof(struct fc_rdp_port_name_desc); } static void lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context, int status) { struct lpfc_nodelist *ndlp = rdp_context->ndlp; struct lpfc_vport *vport = ndlp->vport; struct lpfc_iocbq *elsiocb; struct ulp_bde64 *bpl; IOCB_t *icmd; union lpfc_wqe128 *wqe; uint8_t *pcmd; struct ls_rjt *stat; struct fc_rdp_res_frame *rdp_res; uint32_t cmdsize, len; uint16_t *flag_ptr; int rc; u32 ulp_context; if (status != SUCCESS) goto error; /* This will change once we know the true size of the RDP payload */ cmdsize = sizeof(struct fc_rdp_res_frame); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries, rdp_context->ndlp, rdp_context->ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) goto free_rdp_context; ulp_context = get_job_ulpcontext(phba, elsiocb); if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; /* ox-id of the frame */ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, rdp_context->ox_id); bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, rdp_context->rx_id); } else { icmd = &elsiocb->iocb; icmd->ulpContext = rdp_context->rx_id; icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id; } lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2171 Xmit RDP response tag x%x xri x%x, " "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x", elsiocb->iotag, ulp_context, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); rdp_res = (struct fc_rdp_res_frame *)elsiocb->cmd_dmabuf->virt; pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; memset(pcmd, 0, sizeof(struct fc_rdp_res_frame)); *((uint32_t *) (pcmd)) = ELS_CMD_ACC; /* Update Alarm and Warning */ flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS); phba->sfp_alarm |= *flag_ptr; flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS); phba->sfp_warning |= *flag_ptr; /* For RDP payload */ len = 8; len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *) (len + pcmd), ELS_CMD_RDP); len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd), rdp_context->page_a0, rdp_context->page_a2); len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd), phba); len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *) (len + pcmd), &rdp_context->link_stat); len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *) (len + pcmd), vport); len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *) (len + pcmd), vport, ndlp); len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd), &rdp_context->link_stat); len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd), &rdp_context->link_stat, vport); len += lpfc_rdp_res_oed_temp_desc(phba, (struct fc_rdp_oed_sfp_desc *)(len + pcmd), rdp_context->page_a2); len += lpfc_rdp_res_oed_voltage_desc(phba, (struct fc_rdp_oed_sfp_desc *)(len + pcmd), rdp_context->page_a2); len += lpfc_rdp_res_oed_txbias_desc(phba, (struct fc_rdp_oed_sfp_desc *)(len + pcmd), rdp_context->page_a2); len += lpfc_rdp_res_oed_txpower_desc(phba, (struct fc_rdp_oed_sfp_desc *)(len + pcmd), rdp_context->page_a2); len += lpfc_rdp_res_oed_rxpower_desc(phba, (struct fc_rdp_oed_sfp_desc *)(len + pcmd), rdp_context->page_a2); len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd), rdp_context->page_a0, vport); rdp_res->length = cpu_to_be32(len - 8); elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; /* Now that we know the true size of the payload, update the BPL */ bpl = (struct ulp_bde64 *)elsiocb->bpl_dmabuf->virt; bpl->tus.f.bdeSize = len; bpl->tus.f.bdeFlags = 0; bpl->tus.w = le32_to_cpu(bpl->tus.w); phba->fc_stat.elsXmitACC++; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); goto free_rdp_context; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); } goto free_rdp_context; error: cmdsize = 2 * sizeof(uint32_t); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries, ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT); if (!elsiocb) goto free_rdp_context; if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; /* ox-id of the frame */ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, rdp_context->ox_id); bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, rdp_context->rx_id); } else { icmd = &elsiocb->iocb; icmd->ulpContext = rdp_context->rx_id; icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id; } pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT; stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t)); stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; phba->fc_stat.elsXmitLSRJT++; elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); goto free_rdp_context; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); } free_rdp_context: /* This reference put is for the original unsolicited RDP. If the * prep failed, there is no reference to remove. */ lpfc_nlp_put(ndlp); kfree(rdp_context); } static int lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context) { LPFC_MBOXQ_t *mbox = NULL; int rc; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) { lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS, "7105 failed to allocate mailbox memory"); return 1; } if (lpfc_sli4_dump_page_a0(phba, mbox)) goto rdp_fail; mbox->vport = rdp_context->ndlp->vport; mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0; mbox->ctx_u.rdp = rdp_context; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); return 1; } return 0; rdp_fail: mempool_free(mbox, phba->mbox_mem_pool); return 1; } int lpfc_get_sfp_info_wait(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context) { LPFC_MBOXQ_t *mbox = NULL; int rc; struct lpfc_dmabuf *mp; struct lpfc_dmabuf *mpsave; void *virt; MAILBOX_t *mb; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) { lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS, "7205 failed to allocate mailbox memory"); return 1; } if (lpfc_sli4_dump_page_a0(phba, mbox)) goto sfp_fail; mp = mbox->ctx_buf; mpsave = mp; virt = mp->virt; if (phba->sli_rev < LPFC_SLI_REV4) { mb = &mbox->u.mb; mb->un.varDmp.cv = 1; mb->un.varDmp.co = 1; mb->un.varWords[2] = 0; mb->un.varWords[3] = DMP_SFF_PAGE_A0_SIZE / 4; mb->un.varWords[4] = 0; mb->un.varWords[5] = 0; mb->un.varWords[6] = 0; mb->un.varWords[7] = 0; mb->un.varWords[8] = 0; mb->un.varWords[9] = 0; mb->un.varWords[10] = 0; mbox->in_ext_byte_len = DMP_SFF_PAGE_A0_SIZE; mbox->out_ext_byte_len = DMP_SFF_PAGE_A0_SIZE; mbox->mbox_offset_word = 5; mbox->ext_buf = virt; } else { bf_set(lpfc_mbx_memory_dump_type3_length, &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A0_SIZE); mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys); mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys); } mbox->vport = phba->pport; rc = lpfc_sli_issue_mbox_wait(phba, mbox, 30); if (rc == MBX_NOT_FINISHED) { rc = 1; goto error; } if (phba->sli_rev == LPFC_SLI_REV4) mp = mbox->ctx_buf; else mp = mpsave; if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) { rc = 1; goto error; } lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a0, DMP_SFF_PAGE_A0_SIZE); memset(mbox, 0, sizeof(*mbox)); memset(mp->virt, 0, DMP_SFF_PAGE_A2_SIZE); INIT_LIST_HEAD(&mp->list); /* save address for completion */ mbox->ctx_buf = mp; mbox->vport = phba->pport; bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_DUMP_MEMORY); bf_set(lpfc_mbx_memory_dump_type3_type, &mbox->u.mqe.un.mem_dump_type3, DMP_LMSD); bf_set(lpfc_mbx_memory_dump_type3_link, &mbox->u.mqe.un.mem_dump_type3, phba->sli4_hba.physical_port); bf_set(lpfc_mbx_memory_dump_type3_page_no, &mbox->u.mqe.un.mem_dump_type3, DMP_PAGE_A2); if (phba->sli_rev < LPFC_SLI_REV4) { mb = &mbox->u.mb; mb->un.varDmp.cv = 1; mb->un.varDmp.co = 1; mb->un.varWords[2] = 0; mb->un.varWords[3] = DMP_SFF_PAGE_A2_SIZE / 4; mb->un.varWords[4] = 0; mb->un.varWords[5] = 0; mb->un.varWords[6] = 0; mb->un.varWords[7] = 0; mb->un.varWords[8] = 0; mb->un.varWords[9] = 0; mb->un.varWords[10] = 0; mbox->in_ext_byte_len = DMP_SFF_PAGE_A2_SIZE; mbox->out_ext_byte_len = DMP_SFF_PAGE_A2_SIZE; mbox->mbox_offset_word = 5; mbox->ext_buf = virt; } else { bf_set(lpfc_mbx_memory_dump_type3_length, &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A2_SIZE); mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys); mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys); } rc = lpfc_sli_issue_mbox_wait(phba, mbox, 30); if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) { rc = 1; goto error; } rc = 0; lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a2, DMP_SFF_PAGE_A2_SIZE); error: mbox->ctx_buf = mpsave; lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); return rc; sfp_fail: mempool_free(mbox, phba->mbox_mem_pool); return 1; } /* * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS. * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes an unsolicited RDP(Read Diagnostic Parameters) * IOCB. First, the payload of the unsolicited RDP is checked. * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3 * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2, * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl * gather all data and send RDP response. * * Return code * 0 - Sent the acc response * 1 - Sent the reject response. */ static int lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; struct lpfc_dmabuf *pcmd; uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE; struct fc_rdp_req_frame *rdp_req; struct lpfc_rdp_context *rdp_context; union lpfc_wqe128 *cmd = NULL; struct ls_rjt stat; if (phba->sli_rev < LPFC_SLI_REV4 || bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < LPFC_SLI_INTF_IF_TYPE_2) { rjt_err = LSRJT_UNABLE_TPC; rjt_expl = LSEXP_REQ_UNSUPPORTED; goto error; } if (phba->sli_rev < LPFC_SLI_REV4 || test_bit(HBA_FCOE_MODE, &phba->hba_flag)) { rjt_err = LSRJT_UNABLE_TPC; rjt_expl = LSEXP_REQ_UNSUPPORTED; goto error; } pcmd = cmdiocb->cmd_dmabuf; rdp_req = (struct fc_rdp_req_frame *) pcmd->virt; lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2422 ELS RDP Request " "dec len %d tag x%x port_id %d len %d\n", be32_to_cpu(rdp_req->rdp_des_length), be32_to_cpu(rdp_req->nport_id_desc.tag), be32_to_cpu(rdp_req->nport_id_desc.nport_id), be32_to_cpu(rdp_req->nport_id_desc.length)); if (sizeof(struct fc_rdp_nport_desc) != be32_to_cpu(rdp_req->rdp_des_length)) goto rjt_logerr; if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag)) goto rjt_logerr; if (RDP_NPORT_ID_SIZE != be32_to_cpu(rdp_req->nport_id_desc.length)) goto rjt_logerr; rdp_context = kzalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL); if (!rdp_context) { rjt_err = LSRJT_UNABLE_TPC; goto error; } cmd = &cmdiocb->wqe; rdp_context->ndlp = lpfc_nlp_get(ndlp); if (!rdp_context->ndlp) { kfree(rdp_context); rjt_err = LSRJT_UNABLE_TPC; goto error; } rdp_context->ox_id = bf_get(wqe_rcvoxid, &cmd->xmit_els_rsp.wqe_com); rdp_context->rx_id = bf_get(wqe_ctxt_tag, &cmd->xmit_els_rsp.wqe_com); rdp_context->cmpl = lpfc_els_rdp_cmpl; if (lpfc_get_rdp_info(phba, rdp_context)) { lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS, "2423 Unable to send mailbox"); kfree(rdp_context); rjt_err = LSRJT_UNABLE_TPC; lpfc_nlp_put(ndlp); goto error; } return 0; rjt_logerr: rjt_err = LSRJT_LOGICAL_ERR; error: memset(&stat, 0, sizeof(stat)); stat.un.b.lsRjtRsnCode = rjt_err; stat.un.b.lsRjtRsnCodeExp = rjt_expl; lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); return 1; } static void lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { MAILBOX_t *mb; IOCB_t *icmd; union lpfc_wqe128 *wqe; uint8_t *pcmd; struct lpfc_iocbq *elsiocb; struct lpfc_nodelist *ndlp; struct ls_rjt *stat; union lpfc_sli4_cfg_shdr *shdr; struct lpfc_lcb_context *lcb_context; struct fc_lcb_res_frame *lcb_res; uint32_t cmdsize, shdr_status, shdr_add_status; int rc; mb = &pmb->u.mb; lcb_context = pmb->ctx_u.lcb; ndlp = lcb_context->ndlp; memset(&pmb->ctx_u, 0, sizeof(pmb->ctx_u)); pmb->ctx_buf = NULL; shdr = (union lpfc_sli4_cfg_shdr *) &pmb->u.mqe.un.beacon_config.header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); lpfc_printf_log(phba, KERN_INFO, LOG_MBOX, "0194 SET_BEACON_CONFIG mailbox " "completed with status x%x add_status x%x," " mbx status x%x\n", shdr_status, shdr_add_status, mb->mbxStatus); if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status || (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) || (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) { mempool_free(pmb, phba->mbox_mem_pool); goto error; } mempool_free(pmb, phba->mbox_mem_pool); cmdsize = sizeof(struct fc_lcb_res_frame); elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, lpfc_max_els_tries, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); /* Decrement the ndlp reference count from previous mbox command */ lpfc_nlp_put(ndlp); if (!elsiocb) goto free_lcb_context; lcb_res = (struct fc_lcb_res_frame *)elsiocb->cmd_dmabuf->virt; memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame)); if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id); bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, lcb_context->ox_id); } else { icmd = &elsiocb->iocb; icmd->ulpContext = lcb_context->rx_id; icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id; } pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *)(pcmd)) = ELS_CMD_ACC; lcb_res->lcb_sub_command = lcb_context->sub_command; lcb_res->lcb_type = lcb_context->type; lcb_res->capability = lcb_context->capability; lcb_res->lcb_frequency = lcb_context->frequency; lcb_res->lcb_duration = lcb_context->duration; elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; phba->fc_stat.elsXmitACC++; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); goto out; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); } out: kfree(lcb_context); return; error: cmdsize = sizeof(struct fc_lcb_res_frame); elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, lpfc_max_els_tries, ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT); lpfc_nlp_put(ndlp); if (!elsiocb) goto free_lcb_context; if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id); bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, lcb_context->ox_id); } else { icmd = &elsiocb->iocb; icmd->ulpContext = lcb_context->rx_id; icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id; } pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT; stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t)); stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS; elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; phba->fc_stat.elsXmitLSRJT++; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); goto free_lcb_context; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); } free_lcb_context: kfree(lcb_context); } static int lpfc_sli4_set_beacon(struct lpfc_vport *vport, struct lpfc_lcb_context *lcb_context, uint32_t beacon_state) { struct lpfc_hba *phba = vport->phba; union lpfc_sli4_cfg_shdr *cfg_shdr; LPFC_MBOXQ_t *mbox = NULL; uint32_t len; int rc; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return 1; cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr; len = sizeof(struct lpfc_mbx_set_beacon_config) - sizeof(struct lpfc_sli4_cfg_mhdr); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len, LPFC_SLI4_MBX_EMBED); mbox->ctx_u.lcb = lcb_context; mbox->vport = phba->pport; mbox->mbox_cmpl = lpfc_els_lcb_rsp; bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config, phba->sli4_hba.physical_port); bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config, beacon_state); mbox->u.mqe.un.beacon_config.word5 = 0; /* Reserved */ /* * Check bv1s bit before issuing the mailbox * if bv1s == 1, LCB V1 supported * else, LCB V0 supported */ if (phba->sli4_hba.pc_sli4_params.bv1s) { /* COMMON_SET_BEACON_CONFIG_V1 */ cfg_shdr->request.word9 = BEACON_VERSION_V1; lcb_context->capability |= LCB_CAPABILITY_DURATION; bf_set(lpfc_mbx_set_beacon_port_type, &mbox->u.mqe.un.beacon_config, 0); bf_set(lpfc_mbx_set_beacon_duration_v1, &mbox->u.mqe.un.beacon_config, be16_to_cpu(lcb_context->duration)); } else { /* COMMON_SET_BEACON_CONFIG_V0 */ if (be16_to_cpu(lcb_context->duration) != 0) { mempool_free(mbox, phba->mbox_mem_pool); return 1; } cfg_shdr->request.word9 = BEACON_VERSION_V0; lcb_context->capability &= ~(LCB_CAPABILITY_DURATION); bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config, beacon_state); bf_set(lpfc_mbx_set_beacon_port_type, &mbox->u.mqe.un.beacon_config, 1); bf_set(lpfc_mbx_set_beacon_duration, &mbox->u.mqe.un.beacon_config, be16_to_cpu(lcb_context->duration)); } rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { mempool_free(mbox, phba->mbox_mem_pool); return 1; } return 0; } /** * lpfc_els_rcv_lcb - Process an unsolicited LCB * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB. * First, the payload of the unsolicited LCB is checked. * Then based on Subcommand beacon will either turn on or off. * * Return code * 0 - Sent the acc response * 1 - Sent the reject response. **/ static int lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; struct lpfc_dmabuf *pcmd; uint8_t *lp; struct fc_lcb_request_frame *beacon; struct lpfc_lcb_context *lcb_context; u8 state, rjt_err = 0; struct ls_rjt stat; pcmd = cmdiocb->cmd_dmabuf; lp = (uint8_t *)pcmd->virt; beacon = (struct fc_lcb_request_frame *)pcmd->virt; lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0192 ELS LCB Data x%x x%x x%x x%x sub x%x " "type x%x frequency %x duration x%x\n", lp[0], lp[1], lp[2], beacon->lcb_command, beacon->lcb_sub_command, beacon->lcb_type, beacon->lcb_frequency, be16_to_cpu(beacon->lcb_duration)); if (beacon->lcb_sub_command != LPFC_LCB_ON && beacon->lcb_sub_command != LPFC_LCB_OFF) { rjt_err = LSRJT_CMD_UNSUPPORTED; goto rjt; } if (phba->sli_rev < LPFC_SLI_REV4 || test_bit(HBA_FCOE_MODE, &phba->hba_flag) || (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < LPFC_SLI_INTF_IF_TYPE_2)) { rjt_err = LSRJT_CMD_UNSUPPORTED; goto rjt; } lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL); if (!lcb_context) { rjt_err = LSRJT_UNABLE_TPC; goto rjt; } state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0; lcb_context->sub_command = beacon->lcb_sub_command; lcb_context->capability = 0; lcb_context->type = beacon->lcb_type; lcb_context->frequency = beacon->lcb_frequency; lcb_context->duration = beacon->lcb_duration; lcb_context->ox_id = get_job_rcvoxid(phba, cmdiocb); lcb_context->rx_id = get_job_ulpcontext(phba, cmdiocb); lcb_context->ndlp = lpfc_nlp_get(ndlp); if (!lcb_context->ndlp) { rjt_err = LSRJT_UNABLE_TPC; goto rjt_free; } if (lpfc_sli4_set_beacon(vport, lcb_context, state)) { lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT, "0193 failed to send mail box"); lpfc_nlp_put(ndlp); rjt_err = LSRJT_UNABLE_TPC; goto rjt_free; } return 0; rjt_free: kfree(lcb_context); rjt: memset(&stat, 0, sizeof(stat)); stat.un.b.lsRjtRsnCode = rjt_err; lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); return 1; } /** * lpfc_els_flush_rscn - Clean up any rscn activities with a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine cleans up any Registration State Change Notification * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the * @vport together with the host_lock is used to prevent multiple thread * trying to access the RSCN array on a same @vport at the same time. **/ void lpfc_els_flush_rscn(struct lpfc_vport *vport) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; int i; spin_lock_irq(shost->host_lock); if (vport->fc_rscn_flush) { /* Another thread is walking fc_rscn_id_list on this vport */ spin_unlock_irq(shost->host_lock); return; } /* Indicate we are walking lpfc_els_flush_rscn on this vport */ vport->fc_rscn_flush = 1; spin_unlock_irq(shost->host_lock); for (i = 0; i < vport->fc_rscn_id_cnt; i++) { lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]); vport->fc_rscn_id_list[i] = NULL; } clear_bit(FC_RSCN_MODE, &vport->fc_flag); clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); spin_lock_irq(shost->host_lock); vport->fc_rscn_id_cnt = 0; spin_unlock_irq(shost->host_lock); lpfc_can_disctmo(vport); /* Indicate we are done walking this fc_rscn_id_list */ vport->fc_rscn_flush = 0; } /** * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did * @vport: pointer to a host virtual N_Port data structure. * @did: remote destination port identifier. * * This routine checks whether there is any pending Registration State * Configuration Notification (RSCN) to a @did on @vport. * * Return code * None zero - The @did matched with a pending rscn * 0 - not able to match @did with a pending rscn **/ int lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did) { D_ID ns_did; D_ID rscn_did; uint32_t *lp; uint32_t payload_len, i; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); ns_did.un.word = did; /* Never match fabric nodes for RSCNs */ if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) return 0; /* If we are doing a FULL RSCN rediscovery, match everything */ if (test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) return did; spin_lock_irq(shost->host_lock); if (vport->fc_rscn_flush) { /* Another thread is walking fc_rscn_id_list on this vport */ spin_unlock_irq(shost->host_lock); return 0; } /* Indicate we are walking fc_rscn_id_list on this vport */ vport->fc_rscn_flush = 1; spin_unlock_irq(shost->host_lock); for (i = 0; i < vport->fc_rscn_id_cnt; i++) { lp = vport->fc_rscn_id_list[i]->virt; payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK); payload_len -= sizeof(uint32_t); /* take off word 0 */ while (payload_len) { rscn_did.un.word = be32_to_cpu(*lp++); payload_len -= sizeof(uint32_t); switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) { case RSCN_ADDRESS_FORMAT_PORT: if ((ns_did.un.b.domain == rscn_did.un.b.domain) && (ns_did.un.b.area == rscn_did.un.b.area) && (ns_did.un.b.id == rscn_did.un.b.id)) goto return_did_out; break; case RSCN_ADDRESS_FORMAT_AREA: if ((ns_did.un.b.domain == rscn_did.un.b.domain) && (ns_did.un.b.area == rscn_did.un.b.area)) goto return_did_out; break; case RSCN_ADDRESS_FORMAT_DOMAIN: if (ns_did.un.b.domain == rscn_did.un.b.domain) goto return_did_out; break; case RSCN_ADDRESS_FORMAT_FABRIC: goto return_did_out; } } } /* Indicate we are done with walking fc_rscn_id_list on this vport */ vport->fc_rscn_flush = 0; return 0; return_did_out: /* Indicate we are done with walking fc_rscn_id_list on this vport */ vport->fc_rscn_flush = 0; return did; } /** * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn * @vport: pointer to a host virtual N_Port data structure. * * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the * state machine for a @vport's nodes that are with pending RSCN (Registration * State Change Notification). * * Return code * 0 - Successful (currently alway return 0) **/ static int lpfc_rscn_recovery_check(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp = NULL, *n; /* Move all affected nodes by pending RSCNs to NPR state. */ list_for_each_entry_safe(ndlp, n, &vport->fc_nodes, nlp_listp) { if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) || !lpfc_rscn_payload_check(vport, ndlp->nlp_DID)) continue; /* NVME Target mode does not do RSCN Recovery. */ if (vport->phba->nvmet_support) continue; /* If we are in the process of doing discovery on this * NPort, let it continue on its own. */ switch (ndlp->nlp_state) { case NLP_STE_PLOGI_ISSUE: case NLP_STE_ADISC_ISSUE: case NLP_STE_REG_LOGIN_ISSUE: case NLP_STE_PRLI_ISSUE: case NLP_STE_LOGO_ISSUE: continue; } lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RECOVERY); lpfc_cancel_retry_delay_tmo(vport, ndlp); } return 0; } /** * lpfc_send_rscn_event - Send an RSCN event to management application * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * * lpfc_send_rscn_event sends an RSCN netlink event to management * applications. */ static void lpfc_send_rscn_event(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb) { struct lpfc_dmabuf *pcmd; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); uint32_t *payload_ptr; uint32_t payload_len; struct lpfc_rscn_event_header *rscn_event_data; pcmd = cmdiocb->cmd_dmabuf; payload_ptr = (uint32_t *) pcmd->virt; payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK); rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) + payload_len, GFP_KERNEL); if (!rscn_event_data) { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0147 Failed to allocate memory for RSCN event\n"); return; } rscn_event_data->event_type = FC_REG_RSCN_EVENT; rscn_event_data->payload_length = payload_len; memcpy(rscn_event_data->rscn_payload, payload_ptr, payload_len); fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(struct lpfc_rscn_event_header) + payload_len, (char *)rscn_event_data, LPFC_NL_VENDOR_ID); kfree(rscn_event_data); } /** * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes an unsolicited RSCN (Registration State Change * Notification) IOCB. First, the payload of the unsolicited RSCN is walked * to invoke fc_host_post_event() routine to the FC transport layer. If the * discover state machine is about to begin discovery, it just accepts the * RSCN and the discovery process will satisfy the RSCN. If this RSCN only * contains N_Port IDs for other vports on this HBA, it just accepts the * RSCN and ignore processing it. If the state machine is in the recovery * state, the fc_rscn_id_list of this @vport is walked and the * lpfc_rscn_recovery_check() routine is invoked to send recovery event for * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn() * routine is invoked to handle the RSCN event. * * Return code * 0 - Just sent the acc response * 1 - Sent the acc response and waited for name server completion **/ static int lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; struct lpfc_dmabuf *pcmd; uint32_t *lp, *datap; uint32_t payload_len, length, nportid, *cmd; int rscn_cnt; int rscn_id = 0, hba_id = 0; int i, tmo; pcmd = cmdiocb->cmd_dmabuf; lp = (uint32_t *) pcmd->virt; payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK); payload_len -= sizeof(uint32_t); /* take off word 0 */ /* RSCN received */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0214 RSCN received Data: x%lx x%x x%x x%x\n", vport->fc_flag, payload_len, *lp, vport->fc_rscn_id_cnt); /* Send an RSCN event to the management application */ lpfc_send_rscn_event(vport, cmdiocb); for (i = 0; i < payload_len/sizeof(uint32_t); i++) fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_RSCN, lp[i]); /* Check if RSCN is coming from a direct-connected remote NPort */ if (test_bit(FC_PT2PT, &vport->fc_flag)) { /* If so, just ACC it, no other action needed for now */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2024 pt2pt RSCN %08x Data: x%lx x%x\n", *lp, vport->fc_flag, payload_len); lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); /* Check to see if we need to NVME rescan this target * remoteport. */ if (ndlp->nlp_fc4_type & NLP_FC4_NVME && ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) lpfc_nvme_rescan_port(vport, ndlp); return 0; } /* If we are about to begin discovery, just ACC the RSCN. * Discovery processing will satisfy it. */ if (vport->port_state <= LPFC_NS_QRY) { lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x", ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); return 0; } /* If this RSCN just contains NPortIDs for other vports on this HBA, * just ACC and ignore it. */ if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && !(vport->cfg_peer_port_login)) { i = payload_len; datap = lp; while (i > 0) { nportid = *datap++; nportid = ((be32_to_cpu(nportid)) & Mask_DID); i -= sizeof(uint32_t); rscn_id++; if (lpfc_find_vport_by_did(phba, nportid)) hba_id++; } if (rscn_id == hba_id) { /* ALL NPortIDs in RSCN are on HBA */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0219 Ignore RSCN " "Data: x%lx x%x x%x x%x\n", vport->fc_flag, payload_len, *lp, vport->fc_rscn_id_cnt); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RSCN vport: did:x%x/ste:x%x flg:x%x", ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); /* Restart disctmo if its already running */ if (test_bit(FC_DISC_TMO, &vport->fc_flag)) { tmo = ((phba->fc_ratov * 3) + 3); mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); } return 0; } } spin_lock_irq(shost->host_lock); if (vport->fc_rscn_flush) { /* Another thread is walking fc_rscn_id_list on this vport */ spin_unlock_irq(shost->host_lock); set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); /* Send back ACC */ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); return 0; } /* Indicate we are walking fc_rscn_id_list on this vport */ vport->fc_rscn_flush = 1; spin_unlock_irq(shost->host_lock); /* Get the array count after successfully have the token */ rscn_cnt = vport->fc_rscn_id_cnt; /* If we are already processing an RSCN, save the received * RSCN payload buffer, cmdiocb->cmd_dmabuf to process later. */ if (test_bit(FC_RSCN_MODE, &vport->fc_flag) || test_bit(FC_NDISC_ACTIVE, &vport->fc_flag)) { lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RSCN defer: did:x%x/ste:x%x flg:x%x", ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); set_bit(FC_RSCN_DEFERRED, &vport->fc_flag); /* Restart disctmo if its already running */ if (test_bit(FC_DISC_TMO, &vport->fc_flag)) { tmo = ((phba->fc_ratov * 3) + 3); mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); } if ((rscn_cnt < FC_MAX_HOLD_RSCN) && !test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) { set_bit(FC_RSCN_MODE, &vport->fc_flag); if (rscn_cnt) { cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt; length = be32_to_cpu(*cmd & ~ELS_CMD_MASK); } if ((rscn_cnt) && (payload_len + length <= LPFC_BPL_SIZE)) { *cmd &= ELS_CMD_MASK; *cmd |= cpu_to_be32(payload_len + length); memcpy(((uint8_t *)cmd) + length, lp, payload_len); } else { vport->fc_rscn_id_list[rscn_cnt] = pcmd; vport->fc_rscn_id_cnt++; /* If we zero, cmdiocb->cmd_dmabuf, the calling * routine will not try to free it. */ cmdiocb->cmd_dmabuf = NULL; } /* Deferred RSCN */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0235 Deferred RSCN " "Data: x%x x%lx x%x\n", vport->fc_rscn_id_cnt, vport->fc_flag, vport->port_state); } else { set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); /* ReDiscovery RSCN */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0234 ReDiscovery RSCN " "Data: x%x x%lx x%x\n", vport->fc_rscn_id_cnt, vport->fc_flag, vport->port_state); } /* Indicate we are done walking fc_rscn_id_list on this vport */ vport->fc_rscn_flush = 0; /* Send back ACC */ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); /* send RECOVERY event for ALL nodes that match RSCN payload */ lpfc_rscn_recovery_check(vport); return 0; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RSCN: did:x%x/ste:x%x flg:x%x", ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); set_bit(FC_RSCN_MODE, &vport->fc_flag); vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd; /* Indicate we are done walking fc_rscn_id_list on this vport */ vport->fc_rscn_flush = 0; /* * If we zero, cmdiocb->cmd_dmabuf, the calling routine will * not try to free it. */ cmdiocb->cmd_dmabuf = NULL; lpfc_set_disctmo(vport); /* Send back ACC */ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); /* send RECOVERY event for ALL nodes that match RSCN payload */ lpfc_rscn_recovery_check(vport); return lpfc_els_handle_rscn(vport); } /** * lpfc_els_handle_rscn - Handle rscn for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine handles the Registration State Configuration Notification * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise, * if the ndlp to NameServer exists, a Common Transport (CT) command to the * NameServer shall be issued. If CT command to the NameServer fails to be * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any * RSCN activities with the @vport. * * Return code * 0 - Cleaned up rscn on the @vport * 1 - Wait for plogi to name server before proceed **/ int lpfc_els_handle_rscn(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp; struct lpfc_hba *phba = vport->phba; /* Ignore RSCN if the port is being torn down. */ if (test_bit(FC_UNLOADING, &vport->load_flag)) { lpfc_els_flush_rscn(vport); return 0; } /* Start timer for RSCN processing */ lpfc_set_disctmo(vport); /* RSCN processed */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0215 RSCN processed Data: x%lx x%x x%x x%x x%x x%x\n", vport->fc_flag, 0, vport->fc_rscn_id_cnt, vport->port_state, vport->num_disc_nodes, vport->gidft_inp); /* To process RSCN, first compare RSCN data with NameServer */ vport->fc_ns_retry = 0; vport->num_disc_nodes = 0; ndlp = lpfc_findnode_did(vport, NameServer_DID); if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { /* Good ndlp, issue CT Request to NameServer. Need to * know how many gidfts were issued. If none, then just * flush the RSCN. Otherwise, the outstanding requests * need to complete. */ if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) { if (lpfc_issue_gidft(vport) > 0) return 1; } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) { if (lpfc_issue_gidpt(vport) > 0) return 1; } else { return 1; } } else { /* Nameserver login in question. Revalidate. */ if (ndlp) { ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); } else { ndlp = lpfc_nlp_init(vport, NameServer_DID); if (!ndlp) { lpfc_els_flush_rscn(vport); return 0; } ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); } ndlp->nlp_type |= NLP_FABRIC; lpfc_issue_els_plogi(vport, NameServer_DID, 0); /* Wait for NameServer login cmpl before we can * continue */ return 1; } lpfc_els_flush_rscn(vport); return 0; } /** * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Fabric Login (FLOGI) IOCB received as an ELS * unsolicited event. An unsolicited FLOGI can be received in a point-to- * point topology. As an unsolicited FLOGI should not be received in a loop * mode, any unsolicited FLOGI received in loop mode shall be ignored. The * lpfc_check_sparm() routine is invoked to check the parameters in the * unsolicited FLOGI. If parameters validation failed, the routine * lpfc_els_rsp_reject() shall be called with reject reason code set to * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the * FLOGI shall be compared with the Port WWN of the @vport to determine who * will initiate PLOGI. The higher lexicographical value party shall has * higher priority (as the winning port) and will initiate PLOGI and * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI. * * Return code * 0 - Successfully processed the unsolicited flogi * 1 - Failed to process the unsolicited flogi **/ static int lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf; uint32_t *lp = (uint32_t *) pcmd->virt; union lpfc_wqe128 *wqe = &cmdiocb->wqe; struct serv_parm *sp; LPFC_MBOXQ_t *mbox; uint32_t cmd, did; int rc; unsigned long fc_flag = 0; uint32_t port_state = 0; /* Clear external loopback plug detected flag */ phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; cmd = *lp++; sp = (struct serv_parm *) lp; /* FLOGI received */ lpfc_set_disctmo(vport); if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { /* We should never receive a FLOGI in loop mode, ignore it */ did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest); /* An FLOGI ELS command <elsCmd> was received from DID <did> in Loop Mode */ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0113 An FLOGI ELS command x%x was " "received from DID x%x in Loop Mode\n", cmd, did); return 1; } (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1); /* * If our portname is greater than the remote portname, * then we initiate Nport login. */ rc = memcmp(&vport->fc_portname, &sp->portName, sizeof(struct lpfc_name)); if (!rc) { if (phba->sli_rev < LPFC_SLI_REV4) { mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return 1; lpfc_linkdown(phba); lpfc_init_link(phba, mbox, phba->cfg_topology, phba->cfg_link_speed); mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; mbox->vport = vport; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); lpfc_set_loopback_flag(phba); if (rc == MBX_NOT_FINISHED) mempool_free(mbox, phba->mbox_mem_pool); return 1; } /* External loopback plug insertion detected */ phba->link_flag |= LS_EXTERNAL_LOOPBACK; lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_LIBDFC, "1119 External Loopback plug detected\n"); /* abort the flogi coming back to ourselves * due to external loopback on the port. */ lpfc_els_abort_flogi(phba); return 0; } else if (rc > 0) { /* greater than */ set_bit(FC_PT2PT_PLOGI, &vport->fc_flag); /* If we have the high WWPN we can assign our own * myDID; otherwise, we have to WAIT for a PLOGI * from the remote NPort to find out what it * will be. */ vport->fc_myDID = PT2PT_LocalID; } else { vport->fc_myDID = PT2PT_RemoteID; } /* * The vport state should go to LPFC_FLOGI only * AFTER we issue a FLOGI, not receive one. */ spin_lock_irq(shost->host_lock); fc_flag = vport->fc_flag; port_state = vport->port_state; /* Acking an unsol FLOGI. Count 1 for link bounce * work-around. */ vport->rcv_flogi_cnt++; spin_unlock_irq(shost->host_lock); set_bit(FC_PT2PT, &vport->fc_flag); clear_bit(FC_FABRIC, &vport->fc_flag); clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag); lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3311 Rcv Flogi PS x%x new PS x%x " "fc_flag x%lx new fc_flag x%lx\n", port_state, vport->port_state, fc_flag, vport->fc_flag); /* * We temporarily set fc_myDID to make it look like we are * a Fabric. This is done just so we end up with the right * did / sid on the FLOGI ACC rsp. */ did = vport->fc_myDID; vport->fc_myDID = Fabric_DID; memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); /* Defer ACC response until AFTER we issue a FLOGI */ if (!test_bit(HBA_FLOGI_ISSUED, &phba->hba_flag)) { phba->defer_flogi_acc_rx_id = bf_get(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com); phba->defer_flogi_acc_ox_id = bf_get(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com); vport->fc_myDID = did; lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3344 Deferring FLOGI ACC: rx_id: x%x," " ox_id: x%x, hba_flag x%lx\n", phba->defer_flogi_acc_rx_id, phba->defer_flogi_acc_ox_id, phba->hba_flag); phba->defer_flogi_acc_flag = true; return 0; } /* Send back ACC */ lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL); /* Now lets put fc_myDID back to what its supposed to be */ vport->fc_myDID = did; return 0; } /** * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Request Node Identification Data (RNID) IOCB * received as an ELS unsolicited event. Only when the RNID specified format * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data) * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to * Accept (ACC) the RNID ELS command. All the other RNID formats are * rejected by invoking the lpfc_els_rsp_reject() routine. * * Return code * 0 - Successfully processed rnid iocb (currently always return 0) **/ static int lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct lpfc_dmabuf *pcmd; uint32_t *lp; RNID *rn; struct ls_rjt stat; pcmd = cmdiocb->cmd_dmabuf; lp = (uint32_t *) pcmd->virt; lp++; rn = (RNID *) lp; /* RNID received */ switch (rn->Format) { case 0: case RNID_TOPOLOGY_DISC: /* Send back ACC */ lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp); break; default: /* Reject this request because format not supported */ stat.un.b.lsRjtRsvd0 = 0; stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; stat.un.b.vendorUnique = 0; lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); } return 0; } /** * lpfc_els_rcv_echo - Process an unsolicited echo iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * Return code * 0 - Successfully processed echo iocb (currently always return 0) **/ static int lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { uint8_t *pcmd; pcmd = (uint8_t *)cmdiocb->cmd_dmabuf->virt; /* skip over first word of echo command to find echo data */ pcmd += sizeof(uint32_t); lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp); return 0; } /** * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes a Link Incident Report Registration(LIRR) IOCB * received as an ELS unsolicited event. Currently, this function just invokes * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally. * * Return code * 0 - Successfully processed lirr iocb (currently always return 0) **/ static int lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct ls_rjt stat; /* For now, unconditionally reject this command */ stat.un.b.lsRjtRsvd0 = 0; stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; stat.un.b.vendorUnique = 0; lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); return 0; } /** * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB * received as an ELS unsolicited event. A request to RRQ shall only * be accepted if the Originator Nx_Port N_Port_ID or the Responder * Nx_Port N_Port_ID of the target Exchange is the same as the * N_Port_ID of the Nx_Port that makes the request. If the RRQ is * not accepted, an LS_RJT with reason code "Unable to perform * command request" and reason code explanation "Invalid Originator * S_ID" shall be returned. For now, we just unconditionally accept * RRQ from the target. **/ static void lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); if (vport->phba->sli_rev == LPFC_SLI_REV4) lpfc_els_clear_rrq(vport, cmdiocb, ndlp); } /** * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * This routine is the completion callback function for the MBX_READ_LNK_STAT * mailbox command. This callback function is to actually send the Accept * (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It * collects the link statistics from the completion of the MBX_READ_LNK_STAT * mailbox command, constructs the RLS response with the link statistics * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC * response to the RLS. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the RLS Accept Response * ELS IOCB command. * **/ static void lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { int rc = 0; MAILBOX_t *mb; IOCB_t *icmd; union lpfc_wqe128 *wqe; struct RLS_RSP *rls_rsp; uint8_t *pcmd; struct lpfc_iocbq *elsiocb; struct lpfc_nodelist *ndlp; uint16_t oxid; uint16_t rxid; uint32_t cmdsize; u32 ulp_context; mb = &pmb->u.mb; ndlp = pmb->ctx_ndlp; rxid = (uint16_t)(pmb->ctx_u.ox_rx_id & 0xffff); oxid = (uint16_t)((pmb->ctx_u.ox_rx_id >> 16) & 0xffff); memset(&pmb->ctx_u, 0, sizeof(pmb->ctx_u)); pmb->ctx_ndlp = NULL; if (mb->mbxStatus) { mempool_free(pmb, phba->mbox_mem_pool); return; } cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t); elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, lpfc_max_els_tries, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); /* Decrement the ndlp reference count from previous mbox command */ lpfc_nlp_put(ndlp); if (!elsiocb) { mempool_free(pmb, phba->mbox_mem_pool); return; } ulp_context = get_job_ulpcontext(phba, elsiocb); if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; /* Xri / rx_id */ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, rxid); bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, oxid); } else { icmd = &elsiocb->iocb; icmd->ulpContext = rxid; icmd->unsli3.rcvsli3.ox_id = oxid; } pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_ACC; pcmd += sizeof(uint32_t); /* Skip past command */ rls_rsp = (struct RLS_RSP *)pcmd; rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt); rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt); rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt); rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt); rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord); rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt); mempool_free(pmb, phba->mbox_mem_pool); /* Xmit ELS RLS ACC response tag <ulpIoTag> */ lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, "2874 Xmit ELS RLS ACC response tag x%x xri x%x, " "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", elsiocb->iotag, ulp_context, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; phba->fc_stat.elsXmitACC++; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); } return; } /** * lpfc_els_rcv_rls - Process an unsolicited rls iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Read Link Status (RLS) IOCB received as an * ELS unsolicited event. It first checks the remote port state. If the * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE * state, it invokes the lpfc_els_rsl_reject() routine to send the reject * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command * for reading the HBA link statistics. It is for the callback function, * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command * to actually sending out RPL Accept (ACC) response. * * Return codes * 0 - Successfully processed rls iocb (currently always return 0) **/ static int lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; LPFC_MBOXQ_t *mbox; struct ls_rjt stat; u32 ctx = get_job_ulpcontext(phba, cmdiocb); u32 ox_id = get_job_rcvoxid(phba, cmdiocb); if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) /* reject the unsolicited RLS request and done with it */ goto reject_out; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC); if (mbox) { lpfc_read_lnk_stat(phba, mbox); mbox->ctx_u.ox_rx_id = ox_id << 16 | ctx; mbox->ctx_ndlp = lpfc_nlp_get(ndlp); if (!mbox->ctx_ndlp) goto node_err; mbox->vport = vport; mbox->mbox_cmpl = lpfc_els_rsp_rls_acc; if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) != MBX_NOT_FINISHED) /* Mbox completion will send ELS Response */ return 0; /* Decrement reference count used for the failed mbox * command. */ lpfc_nlp_put(ndlp); node_err: mempool_free(mbox, phba->mbox_mem_pool); } reject_out: /* issue rejection response */ stat.un.b.lsRjtRsvd0 = 0; stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; stat.un.b.vendorUnique = 0; lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); return 0; } /** * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Read Timout Value (RTV) IOCB received as an * ELS unsolicited event. It first checks the remote port state. If the * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE * state, it invokes the lpfc_els_rsl_reject() routine to send the reject * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout * Value (RTV) unsolicited IOCB event. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the RTV Accept Response * ELS IOCB command. * * Return codes * 0 - Successfully processed rtv iocb (currently always return 0) **/ static int lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { int rc = 0; IOCB_t *icmd; union lpfc_wqe128 *wqe; struct lpfc_hba *phba = vport->phba; struct ls_rjt stat; struct RTV_RSP *rtv_rsp; uint8_t *pcmd; struct lpfc_iocbq *elsiocb; uint32_t cmdsize; u32 ulp_context; if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) /* reject the unsolicited RTV request and done with it */ goto reject_out; cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t); elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, lpfc_max_els_tries, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1; pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_ACC; pcmd += sizeof(uint32_t); /* Skip past command */ ulp_context = get_job_ulpcontext(phba, elsiocb); /* use the command's xri in the response */ if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, get_job_ulpcontext(phba, cmdiocb)); bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, get_job_rcvoxid(phba, cmdiocb)); } else { icmd = &elsiocb->iocb; icmd->ulpContext = get_job_ulpcontext(phba, cmdiocb); icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, cmdiocb); } rtv_rsp = (struct RTV_RSP *)pcmd; /* populate RTV payload */ rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */ rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov); bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0); bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */ rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov); /* Xmit ELS RLS ACC response tag <ulpIoTag> */ lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, "2875 Xmit ELS RTV ACC response tag x%x xri x%x, " "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, " "Data: x%x x%x x%x\n", elsiocb->iotag, ulp_context, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi, rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov); elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; phba->fc_stat.elsXmitACC++; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 0; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); } return 0; reject_out: /* issue rejection response */ stat.un.b.lsRjtRsvd0 = 0; stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; stat.un.b.vendorUnique = 0; lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); return 0; } /* lpfc_issue_els_rrq - Process an unsolicited rrq iocb * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @did: DID of the target. * @rrq: Pointer to the rrq struct. * * Build a ELS RRQ command and send it to the target. If the issue_iocb is * successful, the completion handler will clear the RRQ. * * Return codes * 0 - Successfully sent rrq els iocb. * 1 - Failed to send rrq els iocb. **/ static int lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint32_t did, struct lpfc_node_rrq *rrq) { struct lpfc_hba *phba = vport->phba; struct RRQ *els_rrq; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; int ret; if (!ndlp) return 1; /* If ndlp is not NULL, we will bump the reference count on it */ cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ)); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did, ELS_CMD_RRQ); if (!elsiocb) return 1; pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; /* For RRQ request, remainder of payload is Exchange IDs */ *((uint32_t *) (pcmd)) = ELS_CMD_RRQ; pcmd += sizeof(uint32_t); els_rrq = (struct RRQ *) pcmd; bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]); bf_set(rrq_rxid, els_rrq, rrq->rxid); bf_set(rrq_did, els_rrq, vport->fc_myDID); els_rrq->rrq = cpu_to_be32(els_rrq->rrq); els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue RRQ: did:x%x", did, rrq->xritag, rrq->rxid); elsiocb->context_un.rrq = rrq; elsiocb->cmd_cmpl = lpfc_cmpl_els_rrq; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) goto io_err; ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (ret == IOCB_ERROR) { lpfc_nlp_put(ndlp); goto io_err; } return 0; io_err: lpfc_els_free_iocb(phba, elsiocb); return 1; } /** * lpfc_send_rrq - Sends ELS RRQ if needed. * @phba: pointer to lpfc hba data structure. * @rrq: pointer to the active rrq. * * This routine will call the lpfc_issue_els_rrq if the rrq is * still active for the xri. If this function returns a failure then * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq. * * Returns 0 Success. * 1 Failure. **/ int lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq) { struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport, rrq->nlp_DID); if (!ndlp) return 1; if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag)) return lpfc_issue_els_rrq(rrq->vport, ndlp, rrq->nlp_DID, rrq); else return 1; } /** * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command * @vport: pointer to a host virtual N_Port data structure. * @cmdsize: size of the ELS command. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command. * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the RPL Accept Response * ELS command. * * Return code * 0 - Successfully issued ACC RPL ELS command * 1 - Failed to issue ACC RPL ELS command **/ static int lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) { int rc = 0; struct lpfc_hba *phba = vport->phba; IOCB_t *icmd; union lpfc_wqe128 *wqe; RPL_RSP rpl_rsp; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; u32 ulp_context; elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1; ulp_context = get_job_ulpcontext(phba, elsiocb); if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; /* Xri / rx_id */ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, get_job_ulpcontext(phba, oldiocb)); bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, get_job_rcvoxid(phba, oldiocb)); } else { icmd = &elsiocb->iocb; icmd->ulpContext = get_job_ulpcontext(phba, oldiocb); icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, oldiocb); } pcmd = elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_ACC; pcmd += sizeof(uint16_t); *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize); pcmd += sizeof(uint16_t); /* Setup the RPL ACC payload */ rpl_rsp.listLen = be32_to_cpu(1); rpl_rsp.index = 0; rpl_rsp.port_num_blk.portNum = 0; rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID); memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname, sizeof(struct lpfc_name)); memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t)); /* Xmit ELS RPL ACC response tag <ulpIoTag> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0120 Xmit ELS RPL ACC response tag x%x " "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " "rpi x%x\n", elsiocb->iotag, ulp_context, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; phba->fc_stat.elsXmitACC++; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); return 1; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return 1; } return 0; } /** * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Read Port List (RPL) IOCB received as an ELS * unsolicited event. It first checks the remote port state. If the remote * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it * invokes the lpfc_els_rsp_reject() routine to send reject response. * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine * to accept the RPL. * * Return code * 0 - Successfully processed rpl iocb (currently always return 0) **/ static int lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct lpfc_dmabuf *pcmd; uint32_t *lp; uint32_t maxsize; uint16_t cmdsize; RPL *rpl; struct ls_rjt stat; if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { /* issue rejection response */ stat.un.b.lsRjtRsvd0 = 0; stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; stat.un.b.vendorUnique = 0; lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); /* rejected the unsolicited RPL request and done with it */ return 0; } pcmd = cmdiocb->cmd_dmabuf; lp = (uint32_t *) pcmd->virt; rpl = (RPL *) (lp + 1); maxsize = be32_to_cpu(rpl->maxsize); /* We support only one port */ if ((rpl->index == 0) && ((maxsize == 0) || ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) { cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP); } else { cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t); } lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp); return 0; } /** * lpfc_els_rcv_farp - Process an unsolicited farp request els command * @vport: pointer to a virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Fibre Channel Address Resolution Protocol * (FARP) Request IOCB received as an ELS unsolicited event. Currently, * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such, * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the * remote PortName is compared against the FC PortName stored in the @vport * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is * compared against the FC NodeName stored in the @vport data structure. * If any of these matches and the FARP_REQUEST_FARPR flag is set in the * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is * invoked to send out FARP Response to the remote node. Before sending the * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi() * routine is invoked to log into the remote port first. * * Return code * 0 - Either the FARP Match Mode not supported or successfully processed **/ static int lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct lpfc_dmabuf *pcmd; uint32_t *lp; FARP *fp; uint32_t cnt, did; did = get_job_els_rsp64_did(vport->phba, cmdiocb); pcmd = cmdiocb->cmd_dmabuf; lp = (uint32_t *) pcmd->virt; lp++; fp = (FARP *) lp; /* FARP-REQ received from DID <did> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0601 FARP-REQ received from DID x%x\n", did); /* We will only support match on WWPN or WWNN */ if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) { return 0; } cnt = 0; /* If this FARP command is searching for my portname */ if (fp->Mflags & FARP_MATCH_PORT) { if (memcmp(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name)) == 0) cnt = 1; } /* If this FARP command is searching for my nodename */ if (fp->Mflags & FARP_MATCH_NODE) { if (memcmp(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name)) == 0) cnt = 1; } if (cnt) { if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) || (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { /* Log back into the node before sending the FARP. */ if (fp->Rflags & FARP_REQUEST_PLOGI) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); } /* Send a FARP response to that node */ if (fp->Rflags & FARP_REQUEST_FARPR) lpfc_issue_els_farpr(vport, did, 0); } } return 0; } /** * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Fibre Channel Address Resolution Protocol * Response (FARPR) IOCB received as an ELS unsolicited event. It simply * invokes the lpfc_els_rsp_acc() routine to the remote node to accept * the FARP response request. * * Return code * 0 - Successfully processed FARPR IOCB (currently always return 0) **/ static int lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { uint32_t did; did = get_job_els_rsp64_did(vport->phba, cmdiocb); /* FARP-RSP received from DID <did> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0600 FARP-RSP received from DID x%x\n", did); /* ACCEPT the Farp resp request */ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); return 0; } /** * lpfc_els_rcv_fan - Process an unsolicited fan iocb command * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @fan_ndlp: pointer to a node-list data structure. * * This routine processes a Fabric Address Notification (FAN) IOCB * command received as an ELS unsolicited event. The FAN ELS command will * only be processed on a physical port (i.e., the @vport represents the * physical port). The fabric NodeName and PortName from the FAN IOCB are * compared against those in the phba data structure. If any of those is * different, the lpfc_initial_flogi() routine is invoked to initialize * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise, * if both of those are identical, the lpfc_issue_fabric_reglogin() routine * is invoked to register login to the fabric. * * Return code * 0 - Successfully processed fan iocb (currently always return 0). **/ static int lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *fan_ndlp) { struct lpfc_hba *phba = vport->phba; uint32_t *lp; FAN *fp; lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n"); lp = (uint32_t *)cmdiocb->cmd_dmabuf->virt; fp = (FAN *) ++lp; /* FAN received; Fan does not have a reply sequence */ if ((vport == phba->pport) && (vport->port_state == LPFC_LOCAL_CFG_LINK)) { if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName, sizeof(struct lpfc_name))) || (memcmp(&phba->fc_fabparam.portName, &fp->FportName, sizeof(struct lpfc_name)))) { /* This port has switched fabrics. FLOGI is required */ lpfc_issue_init_vfi(vport); } else { /* FAN verified - skip FLOGI */ vport->fc_myDID = vport->fc_prevDID; if (phba->sli_rev < LPFC_SLI_REV4) lpfc_issue_fabric_reglogin(vport); else { lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3138 Need register VFI: (x%x/%x)\n", vport->fc_prevDID, vport->fc_myDID); lpfc_issue_reg_vfi(vport); } } } return 0; } /** * lpfc_els_rcv_edc - Process an unsolicited EDC iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * Return code * 0 - Successfully processed echo iocb (currently always return 0) **/ static int lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; struct fc_els_edc *edc_req; struct fc_tlv_desc *tlv; uint8_t *payload; uint32_t *ptr, dtag; const char *dtag_nm; int desc_cnt = 0, bytes_remain; struct fc_diag_lnkflt_desc *plnkflt; payload = cmdiocb->cmd_dmabuf->virt; edc_req = (struct fc_els_edc *)payload; bytes_remain = be32_to_cpu(edc_req->desc_len); ptr = (uint32_t *)payload; lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, "3319 Rcv EDC payload len %d: x%x x%x x%x\n", bytes_remain, be32_to_cpu(*ptr), be32_to_cpu(*(ptr + 1)), be32_to_cpu(*(ptr + 2))); /* No signal support unless there is a congestion descriptor */ phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; phba->cgn_sig_freq = 0; phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN; if (bytes_remain <= 0) goto out; tlv = edc_req->desc; /* * cycle through EDC diagnostic descriptors to find the * congestion signaling capability descriptor */ while (bytes_remain) { if (bytes_remain < FC_TLV_DESC_HDR_SZ) { lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, "6464 Truncated TLV hdr on " "Diagnostic descriptor[%d]\n", desc_cnt); goto out; } dtag = be32_to_cpu(tlv->desc_tag); switch (dtag) { case ELS_DTAG_LNK_FAULT_CAP: if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != sizeof(struct fc_diag_lnkflt_desc)) { lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, "6465 Truncated Link Fault Diagnostic " "descriptor[%d]: %d vs 0x%zx 0x%zx\n", desc_cnt, bytes_remain, FC_TLV_DESC_SZ_FROM_LENGTH(tlv), sizeof(struct fc_diag_lnkflt_desc)); goto out; } plnkflt = (struct fc_diag_lnkflt_desc *)tlv; lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_LDS_EVENT, "4626 Link Fault Desc Data: x%08x len x%x " "da x%x dd x%x interval x%x\n", be32_to_cpu(plnkflt->desc_tag), be32_to_cpu(plnkflt->desc_len), be32_to_cpu( plnkflt->degrade_activate_threshold), be32_to_cpu( plnkflt->degrade_deactivate_threshold), be32_to_cpu(plnkflt->fec_degrade_interval)); break; case ELS_DTAG_CG_SIGNAL_CAP: if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != sizeof(struct fc_diag_cg_sig_desc)) { lpfc_printf_log( phba, KERN_WARNING, LOG_CGN_MGMT, "6466 Truncated cgn signal Diagnostic " "descriptor[%d]: %d vs 0x%zx 0x%zx\n", desc_cnt, bytes_remain, FC_TLV_DESC_SZ_FROM_LENGTH(tlv), sizeof(struct fc_diag_cg_sig_desc)); goto out; } phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; phba->cgn_reg_signal = phba->cgn_init_reg_signal; /* We start negotiation with lpfc_fabric_cgn_frequency. * When we process the EDC, we will settle on the * higher frequency. */ phba->cgn_sig_freq = lpfc_fabric_cgn_frequency; lpfc_least_capable_settings( phba, (struct fc_diag_cg_sig_desc *)tlv); break; default: dtag_nm = lpfc_get_tlv_dtag_nm(dtag); lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, "6467 unknown Diagnostic " "Descriptor[%d]: tag x%x (%s)\n", desc_cnt, dtag, dtag_nm); } bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); tlv = fc_tlv_next_desc(tlv); desc_cnt++; } out: /* Need to send back an ACC */ lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp); lpfc_config_cgn_signal(phba); return 0; } /** * lpfc_els_timeout - Handler funciton to the els timer * @t: timer context used to obtain the vport. * * This routine is invoked by the ELS timer after timeout. It posts the ELS * timer timeout event by setting the WORKER_ELS_TMO bit to the work port * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake * up the worker thread. It is for the worker thread to invoke the routine * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO. **/ void lpfc_els_timeout(struct timer_list *t) { struct lpfc_vport *vport = from_timer(vport, t, els_tmofunc); struct lpfc_hba *phba = vport->phba; uint32_t tmo_posted; unsigned long iflag; spin_lock_irqsave(&vport->work_port_lock, iflag); tmo_posted = vport->work_port_events & WORKER_ELS_TMO; if (!tmo_posted && !test_bit(FC_UNLOADING, &vport->load_flag)) vport->work_port_events |= WORKER_ELS_TMO; spin_unlock_irqrestore(&vport->work_port_lock, iflag); if (!tmo_posted && !test_bit(FC_UNLOADING, &vport->load_flag)) lpfc_worker_wake_up(phba); return; } /** * lpfc_els_timeout_handler - Process an els timeout event * @vport: pointer to a virtual N_Port data structure. * * This routine is the actual handler function that processes an ELS timeout * event. It walks the ELS ring to get and abort all the IOCBs (except the * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by * invoking the lpfc_sli_issue_abort_iotag() routine. **/ void lpfc_els_timeout_handler(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; struct lpfc_sli_ring *pring; struct lpfc_iocbq *tmp_iocb, *piocb; IOCB_t *cmd = NULL; struct lpfc_dmabuf *pcmd; uint32_t els_command = 0; uint32_t timeout; uint32_t remote_ID = 0xffffffff; LIST_HEAD(abort_list); u32 ulp_command = 0, ulp_context = 0, did = 0, iotag = 0; timeout = (uint32_t)(phba->fc_ratov << 1); pring = lpfc_phba_elsring(phba); if (unlikely(!pring)) return; if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) return; spin_lock_irq(&phba->hbalock); if (phba->sli_rev == LPFC_SLI_REV4) spin_lock(&pring->ring_lock); list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { ulp_command = get_job_cmnd(phba, piocb); ulp_context = get_job_ulpcontext(phba, piocb); did = get_job_els_rsp64_did(phba, piocb); if (phba->sli_rev == LPFC_SLI_REV4) { iotag = get_wqe_reqtag(piocb); } else { cmd = &piocb->iocb; iotag = cmd->ulpIoTag; } if ((piocb->cmd_flag & LPFC_IO_LIBDFC) != 0 || ulp_command == CMD_ABORT_XRI_CX || ulp_command == CMD_ABORT_XRI_CN || ulp_command == CMD_CLOSE_XRI_CN) continue; if (piocb->vport != vport) continue; pcmd = piocb->cmd_dmabuf; if (pcmd) els_command = *(uint32_t *) (pcmd->virt); if (els_command == ELS_CMD_FARP || els_command == ELS_CMD_FARPR || els_command == ELS_CMD_FDISC) continue; if (piocb->drvrTimeout > 0) { if (piocb->drvrTimeout >= timeout) piocb->drvrTimeout -= timeout; else piocb->drvrTimeout = 0; continue; } remote_ID = 0xffffffff; if (ulp_command != CMD_GEN_REQUEST64_CR) { remote_ID = did; } else { struct lpfc_nodelist *ndlp; ndlp = __lpfc_findnode_rpi(vport, ulp_context); if (ndlp) remote_ID = ndlp->nlp_DID; } list_add_tail(&piocb->dlist, &abort_list); } if (phba->sli_rev == LPFC_SLI_REV4) spin_unlock(&pring->ring_lock); spin_unlock_irq(&phba->hbalock); list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0127 ELS timeout Data: x%x x%x x%x " "x%x\n", els_command, remote_ID, ulp_command, iotag); spin_lock_irq(&phba->hbalock); list_del_init(&piocb->dlist); lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL); spin_unlock_irq(&phba->hbalock); } /* Make sure HBA is alive */ lpfc_issue_hb_tmo(phba); if (!list_empty(&pring->txcmplq)) if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) mod_timer(&vport->els_tmofunc, jiffies + msecs_to_jiffies(1000 * timeout)); } /** * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine is used to clean up all the outstanding ELS commands on a * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport() * routine. After that, it walks the ELS transmit queue to remove all the * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For * the IOCBs with a non-NULL completion callback function, the callback * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion * callback function, the IOCB will simply be released. Finally, it walks * the ELS transmit completion queue to issue an abort IOCB to any transmit * completion queue IOCB that is associated with the @vport and is not * an IOCB from libdfc (i.e., the management plane IOCBs that are not * part of the discovery state machine) out to HBA by invoking the * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the * abort IOCB to any transmit completion queueed IOCB, it does not guarantee * the IOCBs are aborted when this function returns. **/ void lpfc_els_flush_cmd(struct lpfc_vport *vport) { LIST_HEAD(abort_list); LIST_HEAD(cancel_list); struct lpfc_hba *phba = vport->phba; struct lpfc_sli_ring *pring; struct lpfc_iocbq *tmp_iocb, *piocb; u32 ulp_command; unsigned long iflags = 0; bool mbx_tmo_err; lpfc_fabric_abort_vport(vport); /* * For SLI3, only the hbalock is required. But SLI4 needs to coordinate * with the ring insert operation. Because lpfc_sli_issue_abort_iotag * ultimately grabs the ring_lock, the driver must splice the list into * a working list and release the locks before calling the abort. */ spin_lock_irqsave(&phba->hbalock, iflags); pring = lpfc_phba_elsring(phba); /* Bail out if we've no ELS wq, like in PCI error recovery case. */ if (unlikely(!pring)) { spin_unlock_irqrestore(&phba->hbalock, iflags); return; } if (phba->sli_rev == LPFC_SLI_REV4) spin_lock(&pring->ring_lock); mbx_tmo_err = test_bit(MBX_TMO_ERR, &phba->bit_flags); /* First we need to issue aborts to outstanding cmds on txcmpl */ list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { if (piocb->cmd_flag & LPFC_IO_LIBDFC && !mbx_tmo_err) continue; if (piocb->vport != vport) continue; if (piocb->cmd_flag & LPFC_DRIVER_ABORTED && !mbx_tmo_err) continue; /* On the ELS ring we can have ELS_REQUESTs or * GEN_REQUESTs waiting for a response. */ ulp_command = get_job_cmnd(phba, piocb); if (ulp_command == CMD_ELS_REQUEST64_CR) { list_add_tail(&piocb->dlist, &abort_list); /* If the link is down when flushing ELS commands * the firmware will not complete them till after * the link comes back up. This may confuse * discovery for the new link up, so we need to * change the compl routine to just clean up the iocb * and avoid any retry logic. */ if (phba->link_state == LPFC_LINK_DOWN) piocb->cmd_cmpl = lpfc_cmpl_els_link_down; } else if (ulp_command == CMD_GEN_REQUEST64_CR || mbx_tmo_err) list_add_tail(&piocb->dlist, &abort_list); } if (phba->sli_rev == LPFC_SLI_REV4) spin_unlock(&pring->ring_lock); spin_unlock_irqrestore(&phba->hbalock, iflags); /* Abort each txcmpl iocb on aborted list and remove the dlist links. */ list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { spin_lock_irqsave(&phba->hbalock, iflags); list_del_init(&piocb->dlist); if (mbx_tmo_err) list_move_tail(&piocb->list, &cancel_list); else lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL); spin_unlock_irqrestore(&phba->hbalock, iflags); } if (!list_empty(&cancel_list)) lpfc_sli_cancel_iocbs(phba, &cancel_list, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); else /* Make sure HBA is alive */ lpfc_issue_hb_tmo(phba); if (!list_empty(&abort_list)) lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "3387 abort list for txq not empty\n"); INIT_LIST_HEAD(&abort_list); spin_lock_irqsave(&phba->hbalock, iflags); if (phba->sli_rev == LPFC_SLI_REV4) spin_lock(&pring->ring_lock); /* No need to abort the txq list, * just queue them up for lpfc_sli_cancel_iocbs */ list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) { ulp_command = get_job_cmnd(phba, piocb); if (piocb->cmd_flag & LPFC_IO_LIBDFC) continue; /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */ if (ulp_command == CMD_QUE_RING_BUF_CN || ulp_command == CMD_QUE_RING_BUF64_CN || ulp_command == CMD_CLOSE_XRI_CN || ulp_command == CMD_ABORT_XRI_CN || ulp_command == CMD_ABORT_XRI_CX) continue; if (piocb->vport != vport) continue; list_del_init(&piocb->list); list_add_tail(&piocb->list, &abort_list); } /* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */ if (vport == phba->pport) { list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, list) { list_del_init(&piocb->list); list_add_tail(&piocb->list, &abort_list); } } if (phba->sli_rev == LPFC_SLI_REV4) spin_unlock(&pring->ring_lock); spin_unlock_irqrestore(&phba->hbalock, iflags); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &abort_list, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); return; } /** * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA * @phba: pointer to lpfc hba data structure. * * This routine is used to clean up all the outstanding ELS commands on a * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba() * routine. After that, it walks the ELS transmit queue to remove all the * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For * the IOCBs with the completion callback function associated, the callback * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion * callback function associated, the IOCB will simply be released. Finally, * it walks the ELS transmit completion queue to issue an abort IOCB to any * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the * management plane IOCBs that are not part of the discovery state machine) * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine. **/ void lpfc_els_flush_all_cmd(struct lpfc_hba *phba) { struct lpfc_vport *vport; spin_lock_irq(&phba->port_list_lock); list_for_each_entry(vport, &phba->port_list, listentry) lpfc_els_flush_cmd(vport); spin_unlock_irq(&phba->port_list_lock); return; } /** * lpfc_send_els_failure_event - Posts an ELS command failure event * @phba: Pointer to hba context object. * @cmdiocbp: Pointer to command iocb which reported error. * @rspiocbp: Pointer to response iocb which reported error. * * This function sends an event when there is an ELS command * failure. **/ void lpfc_send_els_failure_event(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbp, struct lpfc_iocbq *rspiocbp) { struct lpfc_vport *vport = cmdiocbp->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_lsrjt_event lsrjt_event; struct lpfc_fabric_event_header fabric_event; struct ls_rjt stat; struct lpfc_nodelist *ndlp; uint32_t *pcmd; u32 ulp_status, ulp_word4; ndlp = cmdiocbp->ndlp; if (!ndlp) return; ulp_status = get_job_ulpstatus(phba, rspiocbp); ulp_word4 = get_job_word4(phba, rspiocbp); if (ulp_status == IOSTAT_LS_RJT) { lsrjt_event.header.event_type = FC_REG_ELS_EVENT; lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV; memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name)); memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name)); pcmd = (uint32_t *)cmdiocbp->cmd_dmabuf->virt; lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0; stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4); lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode; lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp; fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(lsrjt_event), (char *)&lsrjt_event, LPFC_NL_VENDOR_ID); return; } if (ulp_status == IOSTAT_NPORT_BSY || ulp_status == IOSTAT_FABRIC_BSY) { fabric_event.event_type = FC_REG_FABRIC_EVENT; if (ulp_status == IOSTAT_NPORT_BSY) fabric_event.subcategory = LPFC_EVENT_PORT_BUSY; else fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY; memcpy(fabric_event.wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name)); memcpy(fabric_event.wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name)); fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(fabric_event), (char *)&fabric_event, LPFC_NL_VENDOR_ID); return; } } /** * lpfc_send_els_event - Posts unsolicited els event * @vport: Pointer to vport object. * @ndlp: Pointer FC node object. * @payload: ELS command code type. * * This function posts an event when there is an incoming * unsolicited ELS command. **/ static void lpfc_send_els_event(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint32_t *payload) { struct lpfc_els_event_header *els_data = NULL; struct lpfc_logo_event *logo_data = NULL; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); if (*payload == ELS_CMD_LOGO) { logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL); if (!logo_data) { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0148 Failed to allocate memory " "for LOGO event\n"); return; } els_data = &logo_data->header; } else { els_data = kmalloc(sizeof(struct lpfc_els_event_header), GFP_KERNEL); if (!els_data) { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0149 Failed to allocate memory " "for ELS event\n"); return; } } els_data->event_type = FC_REG_ELS_EVENT; switch (*payload) { case ELS_CMD_PLOGI: els_data->subcategory = LPFC_EVENT_PLOGI_RCV; break; case ELS_CMD_PRLO: els_data->subcategory = LPFC_EVENT_PRLO_RCV; break; case ELS_CMD_ADISC: els_data->subcategory = LPFC_EVENT_ADISC_RCV; break; case ELS_CMD_LOGO: els_data->subcategory = LPFC_EVENT_LOGO_RCV; /* Copy the WWPN in the LOGO payload */ memcpy(logo_data->logo_wwpn, &payload[2], sizeof(struct lpfc_name)); break; default: kfree(els_data); return; } memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name)); memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name)); if (*payload == ELS_CMD_LOGO) { fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(struct lpfc_logo_event), (char *)logo_data, LPFC_NL_VENDOR_ID); kfree(logo_data); } else { fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(struct lpfc_els_event_header), (char *)els_data, LPFC_NL_VENDOR_ID); kfree(els_data); } return; } DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_li_event_nm, fc_fpin_li_event_types, FC_FPIN_LI_EVT_TYPES_INIT); DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_deli_event_nm, fc_fpin_deli_event_types, FC_FPIN_DELI_EVT_TYPES_INIT); DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_event_nm, fc_fpin_congn_event_types, FC_FPIN_CONGN_EVT_TYPES_INIT); DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_severity_nm, fc_fpin_congn_severity_types, FC_FPIN_CONGN_SEVERITY_INIT); /** * lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port * @phba: Pointer to phba object. * @wwnlist: Pointer to list of WWPNs in FPIN payload * @cnt: count of WWPNs in FPIN payload * * This routine is called by LI and PC descriptors. * Limit the number of WWPNs displayed to 6 log messages, 6 per log message */ static void lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt) { char buf[LPFC_FPIN_WWPN_LINE_SZ]; __be64 wwn; u64 wwpn; int i, len; int line = 0; int wcnt = 0; bool endit = false; len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:"); for (i = 0; i < cnt; i++) { /* Are we on the last WWPN */ if (i == (cnt - 1)) endit = true; /* Extract the next WWPN from the payload */ wwn = *wwnlist++; wwpn = be64_to_cpu(wwn); len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ - len, " %016llx", wwpn); /* Log a message if we are on the last WWPN * or if we hit the max allowed per message. */ wcnt++; if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) { buf[len] = 0; lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "4686 %s\n", buf); /* Check if we reached the last WWPN */ if (endit) return; /* Limit the number of log message displayed per FPIN */ line++; if (line == LPFC_FPIN_WWPN_NUM_LINE) { lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "4687 %d WWPNs Truncated\n", cnt - i - 1); return; } /* Start over with next log message */ wcnt = 0; len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Additional WWPNs:"); } } } /** * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event. * @phba: Pointer to phba object. * @tlv: Pointer to the Link Integrity Notification Descriptor. * * This function processes a Link Integrity FPIN event by logging a message. **/ static void lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) { struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv; const char *li_evt_str; u32 li_evt, cnt; li_evt = be16_to_cpu(li->event_type); li_evt_str = lpfc_get_fpin_li_event_nm(li_evt); cnt = be32_to_cpu(li->pname_count); lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "4680 FPIN Link Integrity %s (x%x) " "Detecting PN x%016llx Attached PN x%016llx " "Duration %d mSecs Count %d Port Cnt %d\n", li_evt_str, li_evt, be64_to_cpu(li->detecting_wwpn), be64_to_cpu(li->attached_wwpn), be32_to_cpu(li->event_threshold), be32_to_cpu(li->event_count), cnt); lpfc_display_fpin_wwpn(phba, (__be64 *)&li->pname_list, cnt); } /** * lpfc_els_rcv_fpin_del - Process an FPIN Delivery Event. * @phba: Pointer to hba object. * @tlv: Pointer to the Delivery Notification Descriptor TLV * * This function processes a Delivery FPIN event by logging a message. **/ static void lpfc_els_rcv_fpin_del(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) { struct fc_fn_deli_desc *del = (struct fc_fn_deli_desc *)tlv; const char *del_rsn_str; u32 del_rsn; __be32 *frame; del_rsn = be16_to_cpu(del->deli_reason_code); del_rsn_str = lpfc_get_fpin_deli_event_nm(del_rsn); /* Skip over desc_tag/desc_len header to payload */ frame = (__be32 *)(del + 1); lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "4681 FPIN Delivery %s (x%x) " "Detecting PN x%016llx Attached PN x%016llx " "DiscHdr0 x%08x " "DiscHdr1 x%08x DiscHdr2 x%08x DiscHdr3 x%08x " "DiscHdr4 x%08x DiscHdr5 x%08x\n", del_rsn_str, del_rsn, be64_to_cpu(del->detecting_wwpn), be64_to_cpu(del->attached_wwpn), be32_to_cpu(frame[0]), be32_to_cpu(frame[1]), be32_to_cpu(frame[2]), be32_to_cpu(frame[3]), be32_to_cpu(frame[4]), be32_to_cpu(frame[5])); } /** * lpfc_els_rcv_fpin_peer_cgn - Process a FPIN Peer Congestion Event. * @phba: Pointer to hba object. * @tlv: Pointer to the Peer Congestion Notification Descriptor TLV * * This function processes a Peer Congestion FPIN event by logging a message. **/ static void lpfc_els_rcv_fpin_peer_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) { struct fc_fn_peer_congn_desc *pc = (struct fc_fn_peer_congn_desc *)tlv; const char *pc_evt_str; u32 pc_evt, cnt; pc_evt = be16_to_cpu(pc->event_type); pc_evt_str = lpfc_get_fpin_congn_event_nm(pc_evt); cnt = be32_to_cpu(pc->pname_count); /* Capture FPIN frequency */ phba->cgn_fpin_frequency = be32_to_cpu(pc->event_period); lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_ELS, "4684 FPIN Peer Congestion %s (x%x) " "Duration %d mSecs " "Detecting PN x%016llx Attached PN x%016llx " "Impacted Port Cnt %d\n", pc_evt_str, pc_evt, be32_to_cpu(pc->event_period), be64_to_cpu(pc->detecting_wwpn), be64_to_cpu(pc->attached_wwpn), cnt); lpfc_display_fpin_wwpn(phba, (__be64 *)&pc->pname_list, cnt); } /** * lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification * @phba: Pointer to hba object. * @tlv: Pointer to the Congestion Notification Descriptor TLV * * This function processes an FPIN Congestion Notifiction. The notification * could be an Alarm or Warning. This routine feeds that data into driver's * running congestion algorithm. It also processes the FPIN by * logging a message. It returns 1 to indicate deliver this message * to the upper layer or 0 to indicate don't deliver it. **/ static int lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) { struct lpfc_cgn_info *cp; struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv; const char *cgn_evt_str; u32 cgn_evt; const char *cgn_sev_str; u32 cgn_sev; uint16_t value; u32 crc; bool nm_log = false; int rc = 1; cgn_evt = be16_to_cpu(cgn->event_type); cgn_evt_str = lpfc_get_fpin_congn_event_nm(cgn_evt); cgn_sev = cgn->severity; cgn_sev_str = lpfc_get_fpin_congn_severity_nm(cgn_sev); /* The driver only takes action on a Credit Stall or Oversubscription * event type to engage the IO algorithm. The driver prints an * unmaskable message only for Lost Credit and Credit Stall. * TODO: Still need to have definition of host action on clear, * lost credit and device specific event types. */ switch (cgn_evt) { case FPIN_CONGN_LOST_CREDIT: nm_log = true; break; case FPIN_CONGN_CREDIT_STALL: nm_log = true; fallthrough; case FPIN_CONGN_OVERSUBSCRIPTION: if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION) nm_log = false; switch (cgn_sev) { case FPIN_CONGN_SEVERITY_ERROR: /* Take action here for an Alarm event */ if (phba->cmf_active_mode != LPFC_CFG_OFF) { if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) { /* Track of alarm cnt for SYNC_WQE */ atomic_inc(&phba->cgn_sync_alarm_cnt); } /* Track alarm cnt for cgn_info regardless * of whether CMF is configured for Signals * or FPINs. */ atomic_inc(&phba->cgn_fabric_alarm_cnt); goto cleanup; } break; case FPIN_CONGN_SEVERITY_WARNING: /* Take action here for a Warning event */ if (phba->cmf_active_mode != LPFC_CFG_OFF) { if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) { /* Track of warning cnt for SYNC_WQE */ atomic_inc(&phba->cgn_sync_warn_cnt); } /* Track warning cnt and freq for cgn_info * regardless of whether CMF is configured for * Signals or FPINs. */ atomic_inc(&phba->cgn_fabric_warn_cnt); cleanup: /* Save frequency in ms */ phba->cgn_fpin_frequency = be32_to_cpu(cgn->event_period); value = phba->cgn_fpin_frequency; if (phba->cgn_i) { cp = (struct lpfc_cgn_info *) phba->cgn_i->virt; cp->cgn_alarm_freq = cpu_to_le16(value); cp->cgn_warn_freq = cpu_to_le16(value); crc = lpfc_cgn_calc_crc32 (cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED); cp->cgn_info_crc = cpu_to_le32(crc); } /* Don't deliver to upper layer since * driver took action on this tlv. */ rc = 0; } break; } break; } /* Change the log level to unmaskable for the following event types. */ lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO), LOG_CGN_MGMT | LOG_ELS, "4683 FPIN CONGESTION %s type %s (x%x) Event " "Duration %d mSecs\n", cgn_sev_str, cgn_evt_str, cgn_evt, be32_to_cpu(cgn->event_period)); return rc; } void lpfc_els_rcv_fpin(struct lpfc_vport *vport, void *p, u32 fpin_length) { struct lpfc_hba *phba = vport->phba; struct fc_els_fpin *fpin = (struct fc_els_fpin *)p; struct fc_tlv_desc *tlv, *first_tlv, *current_tlv; const char *dtag_nm; int desc_cnt = 0, bytes_remain, cnt; u32 dtag, deliver = 0; int len; /* FPINs handled only if we are in the right discovery state */ if (vport->port_state < LPFC_DISC_AUTH) return; /* make sure there is the full fpin header */ if (fpin_length < sizeof(struct fc_els_fpin)) return; /* Sanity check descriptor length. The desc_len value does not * include space for the ELS command and the desc_len fields. */ len = be32_to_cpu(fpin->desc_len); if (fpin_length < len + sizeof(struct fc_els_fpin)) { lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, "4671 Bad ELS FPIN length %d: %d\n", len, fpin_length); return; } tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0]; first_tlv = tlv; bytes_remain = fpin_length - offsetof(struct fc_els_fpin, fpin_desc); bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len)); /* process each descriptor separately */ while (bytes_remain >= FC_TLV_DESC_HDR_SZ && bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) { dtag = be32_to_cpu(tlv->desc_tag); switch (dtag) { case ELS_DTAG_LNK_INTEGRITY: lpfc_els_rcv_fpin_li(phba, tlv); deliver = 1; break; case ELS_DTAG_DELIVERY: lpfc_els_rcv_fpin_del(phba, tlv); deliver = 1; break; case ELS_DTAG_PEER_CONGEST: lpfc_els_rcv_fpin_peer_cgn(phba, tlv); deliver = 1; break; case ELS_DTAG_CONGESTION: deliver = lpfc_els_rcv_fpin_cgn(phba, tlv); break; default: dtag_nm = lpfc_get_tlv_dtag_nm(dtag); lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, "4678 unknown FPIN descriptor[%d]: " "tag x%x (%s)\n", desc_cnt, dtag, dtag_nm); /* If descriptor is bad, drop the rest of the data */ return; } lpfc_cgn_update_stat(phba, dtag); cnt = be32_to_cpu(tlv->desc_len); /* Sanity check descriptor length. The desc_len value does not * include space for the desc_tag and the desc_len fields. */ len -= (cnt + sizeof(struct fc_tlv_desc)); if (len < 0) { dtag_nm = lpfc_get_tlv_dtag_nm(dtag); lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, "4672 Bad FPIN descriptor TLV length " "%d: %d %d %s\n", cnt, len, fpin_length, dtag_nm); return; } current_tlv = tlv; bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); tlv = fc_tlv_next_desc(tlv); /* Format payload such that the FPIN delivered to the * upper layer is a single descriptor FPIN. */ if (desc_cnt) memcpy(first_tlv, current_tlv, (cnt + sizeof(struct fc_els_fpin))); /* Adjust the length so that it only reflects a * single descriptor FPIN. */ fpin_length = cnt + sizeof(struct fc_els_fpin); fpin->desc_len = cpu_to_be32(fpin_length); fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */ /* Send every descriptor individually to the upper layer */ if (deliver) fc_host_fpin_rcv(lpfc_shost_from_vport(vport), fpin_length, (char *)fpin, 0); desc_cnt++; } } /** * lpfc_els_unsol_buffer - Process an unsolicited event data buffer * @phba: pointer to lpfc hba data structure. * @pring: pointer to a SLI ring. * @vport: pointer to a host virtual N_Port data structure. * @elsiocb: pointer to lpfc els command iocb data structure. * * This routine is used for processing the IOCB associated with a unsolicited * event. It first determines whether there is an existing ndlp that matches * the DID from the unsolicited IOCB. If not, it will create a new one with * the DID from the unsolicited IOCB. The ELS command from the unsolicited * IOCB is then used to invoke the proper routine and to set up proper state * of the discovery state machine. **/ static void lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb) { struct lpfc_nodelist *ndlp; struct ls_rjt stat; u32 *payload, payload_len; u32 cmd = 0, did = 0, newnode, status = 0; uint8_t rjt_exp, rjt_err = 0, init_link = 0; struct lpfc_wcqe_complete *wcqe_cmpl = NULL; LPFC_MBOXQ_t *mbox; if (!vport || !elsiocb->cmd_dmabuf) goto dropit; newnode = 0; wcqe_cmpl = &elsiocb->wcqe_cmpl; payload = elsiocb->cmd_dmabuf->virt; if (phba->sli_rev == LPFC_SLI_REV4) payload_len = wcqe_cmpl->total_data_placed; else payload_len = elsiocb->iocb.unsli3.rcvsli3.acc_len; status = get_job_ulpstatus(phba, elsiocb); cmd = *payload; if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0) lpfc_sli3_post_buffer(phba, pring, 1); did = get_job_els_rsp64_did(phba, elsiocb); if (status) { lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV Unsol ELS: status:x%x/x%x did:x%x", status, get_job_word4(phba, elsiocb), did); goto dropit; } /* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) goto dropit; /* Ignore traffic received during vport shutdown. */ if (test_bit(FC_UNLOADING, &vport->load_flag)) goto dropit; /* If NPort discovery is delayed drop incoming ELS */ if (test_bit(FC_DISC_DELAYED, &vport->fc_flag) && cmd != ELS_CMD_PLOGI) goto dropit; ndlp = lpfc_findnode_did(vport, did); if (!ndlp) { /* Cannot find existing Fabric ndlp, so allocate a new one */ ndlp = lpfc_nlp_init(vport, did); if (!ndlp) goto dropit; lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); newnode = 1; if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) ndlp->nlp_type |= NLP_FABRIC; } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) { lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); newnode = 1; } phba->fc_stat.elsRcvFrame++; /* * Do not process any unsolicited ELS commands * if the ndlp is in DEV_LOSS */ spin_lock_irq(&ndlp->lock); if (ndlp->nlp_flag & NLP_IN_DEV_LOSS) { spin_unlock_irq(&ndlp->lock); if (newnode) lpfc_nlp_put(ndlp); goto dropit; } spin_unlock_irq(&ndlp->lock); elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) goto dropit; elsiocb->vport = vport; if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) { cmd &= ELS_CMD_MASK; } /* ELS command <elsCmd> received from NPORT <did> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0112 ELS command x%x received from NPORT x%x " "refcnt %d Data: x%x x%lx x%x x%x\n", cmd, did, kref_read(&ndlp->kref), vport->port_state, vport->fc_flag, vport->fc_myDID, vport->fc_prevDID); /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */ if ((vport->port_state < LPFC_FABRIC_CFG_LINK) && (cmd != ELS_CMD_FLOGI) && !((cmd == ELS_CMD_PLOGI) && test_bit(FC_PT2PT, &vport->fc_flag))) { rjt_err = LSRJT_LOGICAL_BSY; rjt_exp = LSEXP_NOTHING_MORE; goto lsrjt; } switch (cmd) { case ELS_CMD_PLOGI: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV PLOGI: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvPLOGI++; ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp); if (phba->sli_rev == LPFC_SLI_REV4 && test_bit(FC_PT2PT, &phba->pport->fc_flag)) { vport->fc_prevDID = vport->fc_myDID; /* Our DID needs to be updated before registering * the vfi. This is done in lpfc_rcv_plogi but * that is called after the reg_vfi. */ vport->fc_myDID = bf_get(els_rsp64_sid, &elsiocb->wqe.xmit_els_rsp); lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3312 Remote port assigned DID x%x " "%x\n", vport->fc_myDID, vport->fc_prevDID); } lpfc_send_els_event(vport, ndlp, payload); /* If Nport discovery is delayed, reject PLOGIs */ if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) { rjt_err = LSRJT_UNABLE_TPC; rjt_exp = LSEXP_NOTHING_MORE; break; } if (vport->port_state < LPFC_DISC_AUTH) { if (!test_bit(FC_PT2PT, &phba->pport->fc_flag) || test_bit(FC_PT2PT_PLOGI, &phba->pport->fc_flag)) { rjt_err = LSRJT_UNABLE_TPC; rjt_exp = LSEXP_NOTHING_MORE; break; } } spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~NLP_TARGET_REMOVE; spin_unlock_irq(&ndlp->lock); lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PLOGI); break; case ELS_CMD_FLOGI: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV FLOGI: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvFLOGI++; /* If the driver believes fabric discovery is done and is ready, * bounce the link. There is some descrepancy. */ if (vport->port_state >= LPFC_LOCAL_CFG_LINK && test_bit(FC_PT2PT, &vport->fc_flag) && vport->rcv_flogi_cnt >= 1) { rjt_err = LSRJT_LOGICAL_BSY; rjt_exp = LSEXP_NOTHING_MORE; init_link++; goto lsrjt; } lpfc_els_rcv_flogi(vport, elsiocb, ndlp); /* retain node if our response is deferred */ if (phba->defer_flogi_acc_flag) break; if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); break; case ELS_CMD_LOGO: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV LOGO: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvLOGO++; lpfc_send_els_event(vport, ndlp, payload); if (vport->port_state < LPFC_DISC_AUTH) { rjt_err = LSRJT_UNABLE_TPC; rjt_exp = LSEXP_NOTHING_MORE; break; } lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO); if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); break; case ELS_CMD_PRLO: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV PRLO: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvPRLO++; lpfc_send_els_event(vport, ndlp, payload); if (vport->port_state < LPFC_DISC_AUTH) { rjt_err = LSRJT_UNABLE_TPC; rjt_exp = LSEXP_NOTHING_MORE; break; } lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO); break; case ELS_CMD_LCB: phba->fc_stat.elsRcvLCB++; lpfc_els_rcv_lcb(vport, elsiocb, ndlp); break; case ELS_CMD_RDP: phba->fc_stat.elsRcvRDP++; lpfc_els_rcv_rdp(vport, elsiocb, ndlp); break; case ELS_CMD_RSCN: phba->fc_stat.elsRcvRSCN++; lpfc_els_rcv_rscn(vport, elsiocb, ndlp); if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); break; case ELS_CMD_ADISC: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV ADISC: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); lpfc_send_els_event(vport, ndlp, payload); phba->fc_stat.elsRcvADISC++; if (vport->port_state < LPFC_DISC_AUTH) { rjt_err = LSRJT_UNABLE_TPC; rjt_exp = LSEXP_NOTHING_MORE; break; } lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_ADISC); break; case ELS_CMD_PDISC: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV PDISC: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvPDISC++; if (vport->port_state < LPFC_DISC_AUTH) { rjt_err = LSRJT_UNABLE_TPC; rjt_exp = LSEXP_NOTHING_MORE; break; } lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PDISC); break; case ELS_CMD_FARPR: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV FARPR: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvFARPR++; lpfc_els_rcv_farpr(vport, elsiocb, ndlp); break; case ELS_CMD_FARP: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV FARP: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvFARP++; lpfc_els_rcv_farp(vport, elsiocb, ndlp); break; case ELS_CMD_FAN: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV FAN: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvFAN++; lpfc_els_rcv_fan(vport, elsiocb, ndlp); break; case ELS_CMD_PRLI: case ELS_CMD_NVMEPRLI: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV PRLI: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvPRLI++; if ((vport->port_state < LPFC_DISC_AUTH) && test_bit(FC_FABRIC, &vport->fc_flag)) { rjt_err = LSRJT_UNABLE_TPC; rjt_exp = LSEXP_NOTHING_MORE; break; } lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI); break; case ELS_CMD_LIRR: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV LIRR: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvLIRR++; lpfc_els_rcv_lirr(vport, elsiocb, ndlp); if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); break; case ELS_CMD_RLS: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RLS: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvRLS++; lpfc_els_rcv_rls(vport, elsiocb, ndlp); if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); break; case ELS_CMD_RPL: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RPL: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvRPL++; lpfc_els_rcv_rpl(vport, elsiocb, ndlp); if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); break; case ELS_CMD_RNID: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RNID: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvRNID++; lpfc_els_rcv_rnid(vport, elsiocb, ndlp); if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); break; case ELS_CMD_RTV: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RTV: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvRTV++; lpfc_els_rcv_rtv(vport, elsiocb, ndlp); if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); break; case ELS_CMD_RRQ: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RRQ: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvRRQ++; lpfc_els_rcv_rrq(vport, elsiocb, ndlp); if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); break; case ELS_CMD_ECHO: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV ECHO: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvECHO++; lpfc_els_rcv_echo(vport, elsiocb, ndlp); if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); break; case ELS_CMD_REC: /* receive this due to exchange closed */ rjt_err = LSRJT_UNABLE_TPC; rjt_exp = LSEXP_INVALID_OX_RX; break; case ELS_CMD_FPIN: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV FPIN: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); lpfc_els_rcv_fpin(vport, (struct fc_els_fpin *)payload, payload_len); /* There are no replies, so no rjt codes */ break; case ELS_CMD_EDC: lpfc_els_rcv_edc(vport, elsiocb, ndlp); break; case ELS_CMD_RDF: phba->fc_stat.elsRcvRDF++; /* Accept RDF only from fabric controller */ if (did != Fabric_Cntl_DID) { lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, "1115 Received RDF from invalid DID " "x%x\n", did); rjt_err = LSRJT_PROTOCOL_ERR; rjt_exp = LSEXP_NOTHING_MORE; goto lsrjt; } lpfc_els_rcv_rdf(vport, elsiocb, ndlp); break; default: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x", cmd, did, vport->port_state); /* Unsupported ELS command, reject */ rjt_err = LSRJT_CMD_UNSUPPORTED; rjt_exp = LSEXP_NOTHING_MORE; /* Unknown ELS command <elsCmd> received from NPORT <did> */ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0115 Unknown ELS command x%x " "received from NPORT x%x\n", cmd, did); if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); break; } lsrjt: /* check if need to LS_RJT received ELS cmd */ if (rjt_err) { memset(&stat, 0, sizeof(stat)); stat.un.b.lsRjtRsnCode = rjt_err; stat.un.b.lsRjtRsnCodeExp = rjt_exp; lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp, NULL); /* Remove the reference from above for new nodes. */ if (newnode) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); } /* Release the reference on this elsiocb, not the ndlp. */ lpfc_nlp_put(elsiocb->ndlp); elsiocb->ndlp = NULL; /* Special case. Driver received an unsolicited command that * unsupportable given the driver's current state. Reset the * link and start over. */ if (init_link) { mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return; lpfc_linkdown(phba); lpfc_init_link(phba, mbox, phba->cfg_topology, phba->cfg_link_speed); mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; mbox->vport = vport; if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) == MBX_NOT_FINISHED) mempool_free(mbox, phba->mbox_mem_pool); } return; dropit: if (vport && !test_bit(FC_UNLOADING, &vport->load_flag)) lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0111 Dropping received ELS cmd " "Data: x%x x%x x%x x%x\n", cmd, status, get_job_word4(phba, elsiocb), did); phba->fc_stat.elsRcvDrop++; } /** * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring * @phba: pointer to lpfc hba data structure. * @pring: pointer to a SLI ring. * @elsiocb: pointer to lpfc els iocb data structure. * * This routine is used to process an unsolicited event received from a SLI * (Service Level Interface) ring. The actual processing of the data buffer * associated with the unsolicited event is done by invoking the routine * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the * SLI ring on which the unsolicited event was received. **/ void lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *elsiocb) { struct lpfc_vport *vport = elsiocb->vport; u32 ulp_command, status, parameter, bde_count = 0; IOCB_t *icmd; struct lpfc_wcqe_complete *wcqe_cmpl = NULL; struct lpfc_dmabuf *bdeBuf1 = elsiocb->cmd_dmabuf; struct lpfc_dmabuf *bdeBuf2 = elsiocb->bpl_dmabuf; dma_addr_t paddr; elsiocb->cmd_dmabuf = NULL; elsiocb->rsp_dmabuf = NULL; elsiocb->bpl_dmabuf = NULL; wcqe_cmpl = &elsiocb->wcqe_cmpl; ulp_command = get_job_cmnd(phba, elsiocb); status = get_job_ulpstatus(phba, elsiocb); parameter = get_job_word4(phba, elsiocb); if (phba->sli_rev == LPFC_SLI_REV4) bde_count = wcqe_cmpl->word3; else bde_count = elsiocb->iocb.ulpBdeCount; if (status == IOSTAT_NEED_BUFFER) { lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); } else if (status == IOSTAT_LOCAL_REJECT && (parameter & IOERR_PARAM_MASK) == IOERR_RCV_BUFFER_WAITING) { phba->fc_stat.NoRcvBuf++; /* Not enough posted buffers; Try posting more buffers */ if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) lpfc_sli3_post_buffer(phba, pring, 0); return; } if (phba->sli_rev == LPFC_SLI_REV3) { icmd = &elsiocb->iocb; if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && (ulp_command == CMD_IOCB_RCV_ELS64_CX || ulp_command == CMD_IOCB_RCV_SEQ64_CX)) { if (icmd->unsli3.rcvsli3.vpi == 0xffff) vport = phba->pport; else vport = lpfc_find_vport_by_vpid(phba, icmd->unsli3.rcvsli3.vpi); } } /* If there are no BDEs associated * with this IOCB, there is nothing to do. */ if (bde_count == 0) return; /* Account for SLI2 or SLI3 and later unsolicited buffering */ if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { elsiocb->cmd_dmabuf = bdeBuf1; if (bde_count == 2) elsiocb->bpl_dmabuf = bdeBuf2; } else { icmd = &elsiocb->iocb; paddr = getPaddr(icmd->un.cont64[0].addrHigh, icmd->un.cont64[0].addrLow); elsiocb->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, paddr); if (bde_count == 2) { paddr = getPaddr(icmd->un.cont64[1].addrHigh, icmd->un.cont64[1].addrLow); elsiocb->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, paddr); } } lpfc_els_unsol_buffer(phba, pring, vport, elsiocb); /* * The different unsolicited event handlers would tell us * if they are done with "mp" by setting cmd_dmabuf to NULL. */ if (elsiocb->cmd_dmabuf) { lpfc_in_buf_free(phba, elsiocb->cmd_dmabuf); elsiocb->cmd_dmabuf = NULL; } if (elsiocb->bpl_dmabuf) { lpfc_in_buf_free(phba, elsiocb->bpl_dmabuf); elsiocb->bpl_dmabuf = NULL; } } static void lpfc_start_fdmi(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp; /* If this is the first time, allocate an ndlp and initialize * it. Otherwise, make sure the node is enabled and then do the * login. */ ndlp = lpfc_findnode_did(vport, FDMI_DID); if (!ndlp) { ndlp = lpfc_nlp_init(vport, FDMI_DID); if (ndlp) { ndlp->nlp_type |= NLP_FABRIC; } else { return; } } lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); } /** * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr * @phba: pointer to lpfc hba data structure. * @vport: pointer to a virtual N_Port data structure. * * This routine issues a Port Login (PLOGI) to the Name Server with * State Change Request (SCR) for a @vport. This routine will create an * ndlp for the Name Server associated to the @vport if such node does * not already exist. The PLOGI to Name Server is issued by invoking the * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface * (FDMI) is configured to the @vport, a FDMI node will be created and * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine. **/ void lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp; /* * If lpfc_delay_discovery parameter is set and the clean address * bit is cleared and fc fabric parameters chenged, delay FC NPort * discovery. */ if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "3334 Delay fc port discovery for %d secs\n", phba->fc_ratov); mod_timer(&vport->delayed_disc_tmo, jiffies + msecs_to_jiffies(1000 * phba->fc_ratov)); return; } ndlp = lpfc_findnode_did(vport, NameServer_DID); if (!ndlp) { ndlp = lpfc_nlp_init(vport, NameServer_DID); if (!ndlp) { if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { lpfc_disc_start(vport); return; } lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0251 NameServer login: no memory\n"); return; } } ndlp->nlp_type |= NLP_FABRIC; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) { lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0252 Cannot issue NameServer login\n"); return; } if ((phba->cfg_enable_SmartSAN || phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT) && test_bit(FC_ALLOW_FDMI, &vport->load_flag)) lpfc_start_fdmi(vport); } /** * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * This routine is the completion callback function to register new vport * mailbox command. If the new vport mailbox command completes successfully, * the fabric registration login shall be performed on physical port (the * new vport created is actually a physical port, with VPI 0) or the port * login to Name Server for State Change Request (SCR) will be performed * on virtual port (real virtual port, with VPI greater than 0). **/ static void lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { struct lpfc_vport *vport = pmb->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; MAILBOX_t *mb = &pmb->u.mb; int rc; clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); if (mb->mbxStatus) { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0915 Register VPI failed : Status: x%x" " upd bit: x%x \n", mb->mbxStatus, mb->un.varRegVpi.upd); if (phba->sli_rev == LPFC_SLI_REV4 && mb->un.varRegVpi.upd) goto mbox_err_exit ; switch (mb->mbxStatus) { case 0x11: /* unsupported feature */ case 0x9603: /* max_vpi exceeded */ case 0x9602: /* Link event since CLEAR_LA */ /* giving up on vport registration */ lpfc_vport_set_state(vport, FC_VPORT_FAILED); clear_bit(FC_FABRIC, &vport->fc_flag); clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag); lpfc_can_disctmo(vport); break; /* If reg_vpi fail with invalid VPI status, re-init VPI */ case 0x20: set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); lpfc_init_vpi(phba, pmb, vport->vpi); pmb->vport = vport; pmb->mbox_cmpl = lpfc_init_vpi_cmpl; rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "2732 Failed to issue INIT_VPI" " mailbox command\n"); } else { lpfc_nlp_put(ndlp); return; } fallthrough; default: /* Try to recover from this error */ if (phba->sli_rev == LPFC_SLI_REV4) lpfc_sli4_unreg_all_rpis(vport); lpfc_mbx_unreg_vpi(vport); set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); if (mb->mbxStatus == MBX_NOT_FINISHED) break; if ((vport->port_type == LPFC_PHYSICAL_PORT) && !test_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag)) { if (phba->sli_rev == LPFC_SLI_REV4) lpfc_issue_init_vfi(vport); else lpfc_initial_flogi(vport); } else { lpfc_initial_fdisc(vport); } break; } } else { spin_lock_irq(shost->host_lock); vport->vpi_state |= LPFC_VPI_REGISTERED; spin_unlock_irq(shost->host_lock); if (vport == phba->pport) { if (phba->sli_rev < LPFC_SLI_REV4) lpfc_issue_fabric_reglogin(vport); else { /* * If the physical port is instantiated using * FDISC, do not start vport discovery. */ if (vport->port_state != LPFC_FDISC) lpfc_start_fdiscs(phba); lpfc_do_scr_ns_plogi(phba, vport); } } else { lpfc_do_scr_ns_plogi(phba, vport); } } mbox_err_exit: /* Now, we decrement the ndlp reference count held for this * callback function */ lpfc_nlp_put(ndlp); mempool_free(pmb, phba->mbox_mem_pool); /* reinitialize the VMID datastructure before returning. * this is specifically for vport */ if (lpfc_is_vmid_enabled(phba)) lpfc_reinit_vmid(vport); vport->vmid_flag = vport->phba->pport->vmid_flag; return; } /** * lpfc_register_new_vport - Register a new vport with a HBA * @phba: pointer to lpfc hba data structure. * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * * This routine registers the @vport as a new virtual port with a HBA. * It is done through a registering vpi mailbox command. **/ void lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) { LPFC_MBOXQ_t *mbox; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (mbox) { lpfc_reg_vpi(vport, mbox); mbox->vport = vport; mbox->ctx_ndlp = lpfc_nlp_get(ndlp); if (!mbox->ctx_ndlp) { mempool_free(mbox, phba->mbox_mem_pool); goto mbox_err_exit; } mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport; if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) == MBX_NOT_FINISHED) { /* mailbox command not success, decrement ndlp * reference count for this command */ lpfc_nlp_put(ndlp); mempool_free(mbox, phba->mbox_mem_pool); lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0253 Register VPI: Can't send mbox\n"); goto mbox_err_exit; } } else { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0254 Register VPI: no memory\n"); goto mbox_err_exit; } return; mbox_err_exit: lpfc_vport_set_state(vport, FC_VPORT_FAILED); clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); return; } /** * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer * @phba: pointer to lpfc hba data structure. * * This routine cancels the retry delay timers to all the vports. **/ void lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba) { struct lpfc_vport **vports; struct lpfc_nodelist *ndlp; uint32_t link_state; int i; /* Treat this failure as linkdown for all vports */ link_state = phba->link_state; lpfc_linkdown(phba); phba->link_state = link_state; vports = lpfc_create_vport_work_array(phba); if (vports) { for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { ndlp = lpfc_findnode_did(vports[i], Fabric_DID); if (ndlp) lpfc_cancel_retry_delay_tmo(vports[i], ndlp); lpfc_els_flush_cmd(vports[i]); } lpfc_destroy_vport_work_array(phba, vports); } } /** * lpfc_retry_pport_discovery - Start timer to retry FLOGI. * @phba: pointer to lpfc hba data structure. * * This routine abort all pending discovery commands and * start a timer to retry FLOGI for the physical port * discovery. **/ void lpfc_retry_pport_discovery(struct lpfc_hba *phba) { struct lpfc_nodelist *ndlp; /* Cancel the all vports retry delay retry timers */ lpfc_cancel_all_vport_retry_delay_timer(phba); /* If fabric require FLOGI, then re-instantiate physical login */ ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); if (!ndlp) return; mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000)); spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_DELAY_TMO; spin_unlock_irq(&ndlp->lock); ndlp->nlp_last_elscmd = ELS_CMD_FLOGI; phba->pport->port_state = LPFC_FLOGI; return; } /** * lpfc_fabric_login_reqd - Check if FLOGI required. * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to FDISC command iocb. * @rspiocb: pointer to FDISC response iocb. * * This routine checks if a FLOGI is reguired for FDISC * to succeed. **/ static int lpfc_fabric_login_reqd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { u32 ulp_status = get_job_ulpstatus(phba, rspiocb); u32 ulp_word4 = get_job_word4(phba, rspiocb); if (ulp_status != IOSTAT_FABRIC_RJT || ulp_word4 != RJT_LOGIN_REQUIRED) return 0; else return 1; } /** * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function to a Fabric Discover * (FDISC) ELS command. Since all the FDISC ELS commands are issued * single threaded, each FDISC completion callback function will reset * the discovery timer for all vports such that the timers will not get * unnecessary timeout. The function checks the FDISC IOCB status. If error * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID * assigned to the vport has been changed with the completion of the FDISC * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index) * are unregistered from the HBA, and then the lpfc_register_new_vport() * routine is invoked to register new vport with the HBA. Otherwise, the * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name * Server for State Change Request (SCR). **/ static void lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct lpfc_nodelist *ndlp = cmdiocb->ndlp; struct lpfc_nodelist *np; struct lpfc_nodelist *next_np; struct lpfc_iocbq *piocb; struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp; struct serv_parm *sp; uint8_t fabric_param_changed; u32 ulp_status, ulp_word4; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0123 FDISC completes. x%x/x%x prevDID: x%x\n", ulp_status, ulp_word4, vport->fc_prevDID); /* Since all FDISCs are being single threaded, we * must reset the discovery timer for ALL vports * waiting to send FDISC when one completes. */ list_for_each_entry(piocb, &phba->fabric_iocb_list, list) { lpfc_set_disctmo(piocb->vport); } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "FDISC cmpl: status:x%x/x%x prevdid:x%x", ulp_status, ulp_word4, vport->fc_prevDID); if (ulp_status) { if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) { lpfc_retry_pport_discovery(phba); goto out; } /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) goto out; /* FDISC failed */ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0126 FDISC failed. (x%x/x%x)\n", ulp_status, ulp_word4); goto fdisc_failed; } lpfc_check_nlp_post_devloss(vport, ndlp); clear_bit(FC_VPORT_CVL_RCVD, &vport->fc_flag); clear_bit(FC_VPORT_LOGO_RCVD, &vport->fc_flag); set_bit(FC_FABRIC, &vport->fc_flag); if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP) set_bit(FC_PUBLIC_LOOP, &vport->fc_flag); vport->fc_myDID = ulp_word4 & Mask_DID; lpfc_vport_set_state(vport, FC_VPORT_ACTIVE); prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); if (!prsp) goto out; if (!lpfc_is_els_acc_rsp(prsp)) goto out; sp = prsp->virt + sizeof(uint32_t); fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp); memcpy(&vport->fabric_portname, &sp->portName, sizeof(struct lpfc_name)); memcpy(&vport->fabric_nodename, &sp->nodeName, sizeof(struct lpfc_name)); if (fabric_param_changed && !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) { /* If our NportID changed, we need to ensure all * remaining NPORTs get unreg_login'ed so we can * issue unreg_vpi. */ list_for_each_entry_safe(np, next_np, &vport->fc_nodes, nlp_listp) { if ((np->nlp_state != NLP_STE_NPR_NODE) || !(np->nlp_flag & NLP_NPR_ADISC)) continue; spin_lock_irq(&ndlp->lock); np->nlp_flag &= ~NLP_NPR_ADISC; spin_unlock_irq(&ndlp->lock); lpfc_unreg_rpi(vport, np); } lpfc_cleanup_pending_mbox(vport); if (phba->sli_rev == LPFC_SLI_REV4) lpfc_sli4_unreg_all_rpis(vport); lpfc_mbx_unreg_vpi(vport); set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); if (phba->sli_rev == LPFC_SLI_REV4) set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); else set_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag); } else if ((phba->sli_rev == LPFC_SLI_REV4) && !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) { /* * Driver needs to re-reg VPI in order for f/w * to update the MAC address. */ lpfc_register_new_vport(phba, vport, ndlp); lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); goto out; } if (test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag)) lpfc_issue_init_vpi(vport); else if (test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) lpfc_register_new_vport(phba, vport, ndlp); else lpfc_do_scr_ns_plogi(phba, vport); /* The FDISC completed successfully. Move the fabric ndlp to * UNMAPPED state and register with the transport. */ lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); goto out; fdisc_failed: if (vport->fc_vport && (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS)) lpfc_vport_set_state(vport, FC_VPORT_FAILED); /* Cancel discovery timer */ lpfc_can_disctmo(vport); out: lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); } /** * lpfc_issue_els_fdisc - Issue a fdisc iocb command * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine prepares and issues a Fabric Discover (FDISC) IOCB to * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb() * routine to issue the IOCB, which makes sure only one outstanding fabric * IOCB will be sent off HBA at any given time. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the FDISC ELS command. * * Return code * 0 - Successfully issued fdisc iocb command * 1 - Failed to issue fdisc iocb command **/ static int lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry) { struct lpfc_hba *phba = vport->phba; IOCB_t *icmd; union lpfc_wqe128 *wqe = NULL; struct lpfc_iocbq *elsiocb; struct serv_parm *sp; uint8_t *pcmd; uint16_t cmdsize; int did = ndlp->nlp_DID; int rc; vport->port_state = LPFC_FDISC; vport->fc_myDID = 0; cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did, ELS_CMD_FDISC); if (!elsiocb) { lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0255 Issue FDISC: no IOCB\n"); return 1; } if (phba->sli_rev == LPFC_SLI_REV4) { wqe = &elsiocb->wqe; bf_set(els_req64_sid, &wqe->els_req, 0); bf_set(els_req64_sp, &wqe->els_req, 1); } else { icmd = &elsiocb->iocb; icmd->un.elsreq64.myID = 0; icmd->un.elsreq64.fl = 1; icmd->ulpCt_h = 1; icmd->ulpCt_l = 0; } pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_FDISC; pcmd += sizeof(uint32_t); /* CSP Word 1 */ memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm)); sp = (struct serv_parm *) pcmd; /* Setup CSPs accordingly for Fabric */ sp->cmn.e_d_tov = 0; sp->cmn.w2.r_a_tov = 0; sp->cmn.virtual_fabric_support = 0; sp->cls1.classValid = 0; sp->cls2.seqDelivery = 1; sp->cls3.seqDelivery = 1; pcmd += sizeof(uint32_t); /* CSP Word 2 */ pcmd += sizeof(uint32_t); /* CSP Word 3 */ pcmd += sizeof(uint32_t); /* CSP Word 4 */ pcmd += sizeof(uint32_t); /* Port Name */ memcpy(pcmd, &vport->fc_portname, 8); pcmd += sizeof(uint32_t); /* Node Name */ pcmd += sizeof(uint32_t); /* Node Name */ memcpy(pcmd, &vport->fc_nodename, 8); sp->cmn.valid_vendor_ver_level = 0; memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion)); lpfc_set_disctmo(vport); phba->fc_stat.elsXmitFDISC++; elsiocb->cmd_cmpl = lpfc_cmpl_els_fdisc; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue FDISC: did:x%x", did, 0, 0); elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) goto err_out; rc = lpfc_issue_fabric_iocb(phba, elsiocb); if (rc == IOCB_ERROR) { lpfc_nlp_put(ndlp); goto err_out; } lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING); return 0; err_out: lpfc_els_free_iocb(phba, elsiocb); lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0256 Issue FDISC: Cannot send IOCB\n"); return 1; } /** * lpfc_cmpl_els_npiv_logo - Completion function with vport logo * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function to the issuing of a LOGO * ELS command off a vport. It frees the command IOCB and then decrement the * reference count held on ndlp for this completion function, indicating that * the reference to the ndlp is no long needed. Note that the * lpfc_els_free_iocb() routine decrements the ndlp reference held for this * callback function and an additional explicit ndlp reference decrementation * will trigger the actual release of the ndlp. **/ static void lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; IOCB_t *irsp; struct lpfc_nodelist *ndlp; u32 ulp_status, ulp_word4, did, tmo; ndlp = cmdiocb->ndlp; ulp_status = get_job_ulpstatus(phba, rspiocb); ulp_word4 = get_job_word4(phba, rspiocb); if (phba->sli_rev == LPFC_SLI_REV4) { did = get_job_els_rsp64_did(phba, cmdiocb); tmo = get_wqe_tmo(cmdiocb); } else { irsp = &rspiocb->iocb; did = get_job_els_rsp64_did(phba, rspiocb); tmo = irsp->ulpTimeout; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "LOGO npiv cmpl: status:x%x/x%x did:x%x", ulp_status, ulp_word4, did); /* NPIV LOGO completes to NPort <nlp_DID> */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2928 NPIV LOGO completes to NPort x%x " "Data: x%x x%x x%x x%x x%x x%x x%x\n", ndlp->nlp_DID, ulp_status, ulp_word4, tmo, vport->num_disc_nodes, kref_read(&ndlp->kref), ndlp->nlp_flag, ndlp->fc4_xpt_flags); if (ulp_status == IOSTAT_SUCCESS) { clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag); clear_bit(FC_FABRIC, &vport->fc_flag); lpfc_can_disctmo(vport); } if (ndlp->save_flags & NLP_WAIT_FOR_LOGO) { /* Wake up lpfc_vport_delete if waiting...*/ if (ndlp->logo_waitq) wake_up(ndlp->logo_waitq); spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~(NLP_ISSUE_LOGO | NLP_LOGO_SND); ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO; spin_unlock_irq(&ndlp->lock); } /* Safe to release resources now. */ lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); } /** * lpfc_issue_els_npiv_logo - Issue a logo off a vport * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * * This routine issues a LOGO ELS command to an @ndlp off a @vport. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the LOGO ELS command. * * Return codes * 0 - Successfully issued logo off the @vport * 1 - Failed to issue logo off the @vport **/ int lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) { int rc = 0; struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID, ELS_CMD_LOGO); if (!elsiocb) return 1; pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; *((uint32_t *) (pcmd)) = ELS_CMD_LOGO; pcmd += sizeof(uint32_t); /* Fill in LOGO payload */ *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID); pcmd += sizeof(uint32_t); memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name)); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue LOGO npiv did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, 0); elsiocb->cmd_cmpl = lpfc_cmpl_els_npiv_logo; spin_lock_irq(&ndlp->lock); ndlp->nlp_flag |= NLP_LOGO_SND; spin_unlock_irq(&ndlp->lock); elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(phba, elsiocb); goto err; } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); goto err; } return 0; err: spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~NLP_LOGO_SND; spin_unlock_irq(&ndlp->lock); return 1; } /** * lpfc_fabric_block_timeout - Handler function to the fabric block timer * @t: timer context used to obtain the lpfc hba. * * This routine is invoked by the fabric iocb block timer after * timeout. It posts the fabric iocb block timeout event by setting the * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes * lpfc_worker_wake_up() routine to wake up the worker thread. It is for * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the * posted event WORKER_FABRIC_BLOCK_TMO. **/ void lpfc_fabric_block_timeout(struct timer_list *t) { struct lpfc_hba *phba = from_timer(phba, t, fabric_block_timer); unsigned long iflags; uint32_t tmo_posted; spin_lock_irqsave(&phba->pport->work_port_lock, iflags); tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO; if (!tmo_posted) phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO; spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags); if (!tmo_posted) lpfc_worker_wake_up(phba); return; } /** * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list * @phba: pointer to lpfc hba data structure. * * This routine issues one fabric iocb from the driver internal list to * the HBA. It first checks whether it's ready to issue one fabric iocb to * the HBA (whether there is no outstanding fabric iocb). If so, it shall * remove one pending fabric iocb from the driver internal list and invokes * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA. **/ static void lpfc_resume_fabric_iocbs(struct lpfc_hba *phba) { struct lpfc_iocbq *iocb; unsigned long iflags; int ret; repeat: iocb = NULL; spin_lock_irqsave(&phba->hbalock, iflags); /* Post any pending iocb to the SLI layer */ if (atomic_read(&phba->fabric_iocb_count) == 0) { list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb), list); if (iocb) /* Increment fabric iocb count to hold the position */ atomic_inc(&phba->fabric_iocb_count); } spin_unlock_irqrestore(&phba->hbalock, iflags); if (iocb) { iocb->fabric_cmd_cmpl = iocb->cmd_cmpl; iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb; iocb->cmd_flag |= LPFC_IO_FABRIC; lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, "Fabric sched1: ste:x%x", iocb->vport->port_state, 0, 0); ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); if (ret == IOCB_ERROR) { iocb->cmd_cmpl = iocb->fabric_cmd_cmpl; iocb->fabric_cmd_cmpl = NULL; iocb->cmd_flag &= ~LPFC_IO_FABRIC; set_job_ulpstatus(iocb, IOSTAT_LOCAL_REJECT); iocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED; iocb->cmd_cmpl(phba, iocb, iocb); atomic_dec(&phba->fabric_iocb_count); goto repeat; } } } /** * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command * @phba: pointer to lpfc hba data structure. * * This routine unblocks the issuing fabric iocb command. The function * will clear the fabric iocb block bit and then invoke the routine * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb * from the driver internal fabric iocb list. **/ void lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba) { clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); lpfc_resume_fabric_iocbs(phba); return; } /** * lpfc_block_fabric_iocbs - Block issuing fabric iocb command * @phba: pointer to lpfc hba data structure. * * This routine blocks the issuing fabric iocb for a specified amount of * time (currently 100 ms). This is done by set the fabric iocb block bit * and set up a timeout timer for 100ms. When the block bit is set, no more * fabric iocb will be issued out of the HBA. **/ static void lpfc_block_fabric_iocbs(struct lpfc_hba *phba) { int blocked; blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); /* Start a timer to unblock fabric iocbs after 100ms */ if (!blocked) mod_timer(&phba->fabric_block_timer, jiffies + msecs_to_jiffies(100)); return; } /** * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the callback function that is put to the fabric iocb's * callback function pointer (iocb->cmd_cmpl). The original iocb's callback * function pointer has been stored in iocb->fabric_cmd_cmpl. This callback * function first restores and invokes the original iocb's callback function * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next * fabric bound iocb from the driver internal fabric iocb list onto the wire. **/ static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct ls_rjt stat; u32 ulp_status = get_job_ulpstatus(phba, rspiocb); u32 ulp_word4 = get_job_word4(phba, rspiocb); WARN_ON((cmdiocb->cmd_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC); switch (ulp_status) { case IOSTAT_NPORT_RJT: case IOSTAT_FABRIC_RJT: if (ulp_word4 & RJT_UNAVAIL_TEMP) lpfc_block_fabric_iocbs(phba); break; case IOSTAT_NPORT_BSY: case IOSTAT_FABRIC_BSY: lpfc_block_fabric_iocbs(phba); break; case IOSTAT_LS_RJT: stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4); if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) || (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY)) lpfc_block_fabric_iocbs(phba); break; } BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0); cmdiocb->cmd_cmpl = cmdiocb->fabric_cmd_cmpl; cmdiocb->fabric_cmd_cmpl = NULL; cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC; cmdiocb->cmd_cmpl(phba, cmdiocb, rspiocb); atomic_dec(&phba->fabric_iocb_count); if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) { /* Post any pending iocbs to HBA */ lpfc_resume_fabric_iocbs(phba); } } /** * lpfc_issue_fabric_iocb - Issue a fabric iocb command * @phba: pointer to lpfc hba data structure. * @iocb: pointer to lpfc command iocb data structure. * * This routine is used as the top-level API for issuing a fabric iocb command * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver * function makes sure that only one fabric bound iocb will be outstanding at * any given time. As such, this function will first check to see whether there * is already an outstanding fabric iocb on the wire. If so, it will put the * newly issued iocb onto the driver internal fabric iocb list, waiting to be * issued later. Otherwise, it will issue the iocb on the wire and update the * fabric iocb count it indicate that there is one fabric iocb on the wire. * * Note, this implementation has a potential sending out fabric IOCBs out of * order. The problem is caused by the construction of the "ready" boolen does * not include the condition that the internal fabric IOCB list is empty. As * such, it is possible a fabric IOCB issued by this routine might be "jump" * ahead of the fabric IOCBs in the internal list. * * Return code * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully * IOCB_ERROR - failed to issue fabric iocb **/ static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb) { unsigned long iflags; int ready; int ret; BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1); spin_lock_irqsave(&phba->hbalock, iflags); ready = atomic_read(&phba->fabric_iocb_count) == 0 && !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); if (ready) /* Increment fabric iocb count to hold the position */ atomic_inc(&phba->fabric_iocb_count); spin_unlock_irqrestore(&phba->hbalock, iflags); if (ready) { iocb->fabric_cmd_cmpl = iocb->cmd_cmpl; iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb; iocb->cmd_flag |= LPFC_IO_FABRIC; lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, "Fabric sched2: ste:x%x", iocb->vport->port_state, 0, 0); ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); if (ret == IOCB_ERROR) { iocb->cmd_cmpl = iocb->fabric_cmd_cmpl; iocb->fabric_cmd_cmpl = NULL; iocb->cmd_flag &= ~LPFC_IO_FABRIC; atomic_dec(&phba->fabric_iocb_count); } } else { spin_lock_irqsave(&phba->hbalock, iflags); list_add_tail(&iocb->list, &phba->fabric_iocb_list); spin_unlock_irqrestore(&phba->hbalock, iflags); ret = IOCB_SUCCESS; } return ret; } /** * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list * @vport: pointer to a virtual N_Port data structure. * * This routine aborts all the IOCBs associated with a @vport from the * driver internal fabric IOCB list. The list contains fabric IOCBs to be * issued to the ELS IOCB ring. This abort function walks the fabric IOCB * list, removes each IOCB associated with the @vport off the list, set the * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function * associated with the IOCB. **/ static void lpfc_fabric_abort_vport(struct lpfc_vport *vport) { LIST_HEAD(completions); struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *tmp_iocb, *piocb; spin_lock_irq(&phba->hbalock); list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, list) { if (piocb->vport != vport) continue; list_move_tail(&piocb->list, &completions); } spin_unlock_irq(&phba->hbalock); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); } /** * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list * @ndlp: pointer to a node-list data structure. * * This routine aborts all the IOCBs associated with an @ndlp from the * driver internal fabric IOCB list. The list contains fabric IOCBs to be * issued to the ELS IOCB ring. This abort function walks the fabric IOCB * list, removes each IOCB associated with the @ndlp off the list, set the * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function * associated with the IOCB. **/ void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp) { LIST_HEAD(completions); struct lpfc_hba *phba = ndlp->phba; struct lpfc_iocbq *tmp_iocb, *piocb; struct lpfc_sli_ring *pring; pring = lpfc_phba_elsring(phba); if (unlikely(!pring)) return; spin_lock_irq(&phba->hbalock); list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, list) { if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) { list_move_tail(&piocb->list, &completions); } } spin_unlock_irq(&phba->hbalock); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); } /** * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list * @phba: pointer to lpfc hba data structure. * * This routine aborts all the IOCBs currently on the driver internal * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS * IOCB ring. This function takes the entire IOCB list off the fabric IOCB * list, removes IOCBs off the list, set the status field to * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with * the IOCB. **/ void lpfc_fabric_abort_hba(struct lpfc_hba *phba) { LIST_HEAD(completions); spin_lock_irq(&phba->hbalock); list_splice_init(&phba->fabric_iocb_list, &completions); spin_unlock_irq(&phba->hbalock); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); } /** * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport * @vport: pointer to lpfc vport data structure. * * This routine is invoked by the vport cleanup for deletions and the cleanup * for an ndlp on removal. **/ void lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; struct lpfc_nodelist *ndlp = NULL; unsigned long iflag = 0; spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag); list_for_each_entry_safe(sglq_entry, sglq_next, &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) { lpfc_nlp_put(sglq_entry->ndlp); ndlp = sglq_entry->ndlp; sglq_entry->ndlp = NULL; /* If the xri on the abts_els_sgl list is for the Fport * node and the vport is unloading, the xri aborted wcqe * likely isn't coming back. Just release the sgl. */ if (test_bit(FC_UNLOADING, &vport->load_flag) && ndlp->nlp_DID == Fabric_DID) { list_del(&sglq_entry->list); sglq_entry->state = SGL_FREED; list_add_tail(&sglq_entry->list, &phba->sli4_hba.lpfc_els_sgl_list); } } } spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag); return; } /** * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort * @phba: pointer to lpfc hba data structure. * @axri: pointer to the els xri abort wcqe structure. * * This routine is invoked by the worker thread to process a SLI4 slow-path * ELS aborted xri. **/ void lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba, struct sli4_wcqe_xri_aborted *axri) { uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); uint16_t lxri = 0; struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; unsigned long iflag = 0; struct lpfc_nodelist *ndlp; struct lpfc_sli_ring *pring; pring = lpfc_phba_elsring(phba); spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag); list_for_each_entry_safe(sglq_entry, sglq_next, &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { if (sglq_entry->sli4_xritag == xri) { list_del(&sglq_entry->list); ndlp = sglq_entry->ndlp; sglq_entry->ndlp = NULL; list_add_tail(&sglq_entry->list, &phba->sli4_hba.lpfc_els_sgl_list); sglq_entry->state = SGL_FREED; spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag); if (ndlp) { lpfc_set_rrq_active(phba, ndlp, sglq_entry->sli4_lxritag, rxid, 1); lpfc_nlp_put(ndlp); } /* Check if TXQ queue needs to be serviced */ if (pring && !list_empty(&pring->txq)) lpfc_worker_wake_up(phba); return; } } spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag); lxri = lpfc_sli4_xri_inrange(phba, xri); if (lxri == NO_XRI) return; spin_lock_irqsave(&phba->hbalock, iflag); sglq_entry = __lpfc_get_active_sglq(phba, lxri); if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) { spin_unlock_irqrestore(&phba->hbalock, iflag); return; } sglq_entry->state = SGL_XRI_ABORTED; spin_unlock_irqrestore(&phba->hbalock, iflag); return; } /* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req. * @vport: pointer to virtual port object. * @ndlp: nodelist pointer for the impacted node. * * The driver calls this routine in response to an SLI4 XRI ABORT CQE * or an SLI3 ASYNC_STATUS_CN event from the port. For either event, * the driver is required to send a LOGO to the remote node before it * attempts to recover its login to the remote node. */ void lpfc_sli_abts_recover_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) { struct Scsi_Host *shost; struct lpfc_hba *phba; unsigned long flags = 0; shost = lpfc_shost_from_vport(vport); phba = vport->phba; if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) { lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "3093 No rport recovery needed. " "rport in state 0x%x\n", ndlp->nlp_state); return; } lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3094 Start rport recovery on shost id 0x%x " "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x " "flags 0x%x\n", shost->host_no, ndlp->nlp_DID, vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state, ndlp->nlp_flag); /* * The rport is not responding. Remove the FCP-2 flag to prevent * an ADISC in the follow-up recovery code. */ spin_lock_irqsave(&ndlp->lock, flags); ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; ndlp->nlp_flag |= NLP_ISSUE_LOGO; spin_unlock_irqrestore(&ndlp->lock, flags); lpfc_unreg_rpi(vport, ndlp); } static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport) { bitmap_zero(vport->vmid_priority_range, LPFC_VMID_MAX_PRIORITY_RANGE); } static void lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max) { u32 i; if ((min > max) || (max > LPFC_VMID_MAX_PRIORITY_RANGE)) return; for (i = min; i <= max; i++) set_bit(i, vport->vmid_priority_range); } static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid) { set_bit(ctcl_vmid, vport->vmid_priority_range); } u32 lpfc_vmid_get_cs_ctl(struct lpfc_vport *vport) { u32 i; i = find_first_bit(vport->vmid_priority_range, LPFC_VMID_MAX_PRIORITY_RANGE); if (i == LPFC_VMID_MAX_PRIORITY_RANGE) return 0; clear_bit(i, vport->vmid_priority_range); return i; } #define MAX_PRIORITY_DESC 255 static void lpfc_cmpl_els_qfpa(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct priority_range_desc *desc; struct lpfc_dmabuf *prsp = NULL; struct lpfc_vmid_priority_range *vmid_range = NULL; u32 *data; struct lpfc_dmabuf *dmabuf = cmdiocb->cmd_dmabuf; u32 ulp_status = get_job_ulpstatus(phba, rspiocb); u32 ulp_word4 = get_job_word4(phba, rspiocb); u8 *pcmd, max_desc; u32 len, i; struct lpfc_nodelist *ndlp = cmdiocb->ndlp; prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list); if (!prsp) goto out; pcmd = prsp->virt; data = (u32 *)pcmd; if (data[0] == ELS_CMD_LS_RJT) { lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, "3277 QFPA LS_RJT x%x x%x\n", data[0], data[1]); goto out; } if (ulp_status) { lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI, "6529 QFPA failed with status x%x x%x\n", ulp_status, ulp_word4); goto out; } if (!vport->qfpa_res) { max_desc = FCELSSIZE / sizeof(*vport->qfpa_res); vport->qfpa_res = kcalloc(max_desc, sizeof(*vport->qfpa_res), GFP_KERNEL); if (!vport->qfpa_res) goto out; } len = *((u32 *)(pcmd + 4)); len = be32_to_cpu(len); memcpy(vport->qfpa_res, pcmd, len + 8); len = len / LPFC_PRIORITY_RANGE_DESC_SIZE; desc = (struct priority_range_desc *)(pcmd + 8); vmid_range = vport->vmid_priority.vmid_range; if (!vmid_range) { vmid_range = kcalloc(MAX_PRIORITY_DESC, sizeof(*vmid_range), GFP_KERNEL); if (!vmid_range) { kfree(vport->qfpa_res); goto out; } vport->vmid_priority.vmid_range = vmid_range; } vport->vmid_priority.num_descriptors = len; for (i = 0; i < len; i++, vmid_range++, desc++) { lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS, "6539 vmid values low=%d, high=%d, qos=%d, " "local ve id=%d\n", desc->lo_range, desc->hi_range, desc->qos_priority, desc->local_ve_id); vmid_range->low = desc->lo_range << 1; if (desc->local_ve_id == QFPA_ODD_ONLY) vmid_range->low++; if (desc->qos_priority) vport->vmid_flag |= LPFC_VMID_QOS_ENABLED; vmid_range->qos = desc->qos_priority; vmid_range->high = desc->hi_range << 1; if ((desc->local_ve_id == QFPA_ODD_ONLY) || (desc->local_ve_id == QFPA_EVEN_ODD)) vmid_range->high++; } lpfc_init_cs_ctl_bitmap(vport); for (i = 0; i < vport->vmid_priority.num_descriptors; i++) { lpfc_vmid_set_cs_ctl_range(vport, vport->vmid_priority.vmid_range[i].low, vport->vmid_priority.vmid_range[i].high); } vport->vmid_flag |= LPFC_VMID_QFPA_CMPL; out: lpfc_els_free_iocb(phba, cmdiocb); lpfc_nlp_put(ndlp); } int lpfc_issue_els_qfpa(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ndlp; struct lpfc_iocbq *elsiocb; u8 *pcmd; int ret; ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) return -ENXIO; elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_QFPA_SIZE, 2, ndlp, ndlp->nlp_DID, ELS_CMD_QFPA); if (!elsiocb) return -ENOMEM; pcmd = (u8 *)elsiocb->cmd_dmabuf->virt; *((u32 *)(pcmd)) = ELS_CMD_QFPA; pcmd += 4; elsiocb->cmd_cmpl = lpfc_cmpl_els_qfpa; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(vport->phba, elsiocb); return -ENXIO; } ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 2); if (ret != IOCB_SUCCESS) { lpfc_els_free_iocb(phba, elsiocb); lpfc_nlp_put(ndlp); return -EIO; } vport->vmid_flag &= ~LPFC_VMID_QOS_ENABLED; return 0; } int lpfc_vmid_uvem(struct lpfc_vport *vport, struct lpfc_vmid *vmid, bool instantiated) { struct lpfc_vem_id_desc *vem_id_desc; struct lpfc_nodelist *ndlp; struct lpfc_iocbq *elsiocb; struct instantiated_ve_desc *inst_desc; struct lpfc_vmid_context *vmid_context; u8 *pcmd; u32 *len; int ret = 0; ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) return -ENXIO; vmid_context = kmalloc(sizeof(*vmid_context), GFP_KERNEL); if (!vmid_context) return -ENOMEM; elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_UVEM_SIZE, 2, ndlp, Fabric_DID, ELS_CMD_UVEM); if (!elsiocb) goto out; lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS, "3427 Host vmid %s %d\n", vmid->host_vmid, instantiated); vmid_context->vmp = vmid; vmid_context->nlp = ndlp; vmid_context->instantiated = instantiated; elsiocb->vmid_tag.vmid_context = vmid_context; pcmd = (u8 *)elsiocb->cmd_dmabuf->virt; if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0, sizeof(vport->lpfc_vmid_host_uuid))) memcpy(vport->lpfc_vmid_host_uuid, vmid->host_vmid, sizeof(vport->lpfc_vmid_host_uuid)); *((u32 *)(pcmd)) = ELS_CMD_UVEM; len = (u32 *)(pcmd + 4); *len = cpu_to_be32(LPFC_UVEM_SIZE - 8); vem_id_desc = (struct lpfc_vem_id_desc *)(pcmd + 8); vem_id_desc->tag = be32_to_cpu(VEM_ID_DESC_TAG); vem_id_desc->length = be32_to_cpu(LPFC_UVEM_VEM_ID_DESC_SIZE); memcpy(vem_id_desc->vem_id, vport->lpfc_vmid_host_uuid, sizeof(vem_id_desc->vem_id)); inst_desc = (struct instantiated_ve_desc *)(pcmd + 32); inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG); inst_desc->length = be32_to_cpu(LPFC_UVEM_VE_MAP_DESC_SIZE); memcpy(inst_desc->global_vem_id, vmid->host_vmid, sizeof(inst_desc->global_vem_id)); bf_set(lpfc_instantiated_nport_id, inst_desc, vport->fc_myDID); bf_set(lpfc_instantiated_local_id, inst_desc, vmid->un.cs_ctl_vmid); if (instantiated) { inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG); } else { inst_desc->tag = be32_to_cpu(DEINSTANTIATED_VE_DESC_TAG); lpfc_vmid_put_cs_ctl(vport, vmid->un.cs_ctl_vmid); } inst_desc->word6 = cpu_to_be32(inst_desc->word6); elsiocb->cmd_cmpl = lpfc_cmpl_els_uvem; elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) { lpfc_els_free_iocb(vport->phba, elsiocb); goto out; } ret = lpfc_sli_issue_iocb(vport->phba, LPFC_ELS_RING, elsiocb, 0); if (ret != IOCB_SUCCESS) { lpfc_els_free_iocb(vport->phba, elsiocb); lpfc_nlp_put(ndlp); goto out; } return 0; out: kfree(vmid_context); return -EIO; } static void lpfc_cmpl_els_uvem(struct lpfc_hba *phba, struct lpfc_iocbq *icmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = icmdiocb->vport; struct lpfc_dmabuf *prsp = NULL; struct lpfc_vmid_context *vmid_context = icmdiocb->vmid_tag.vmid_context; struct lpfc_nodelist *ndlp = icmdiocb->ndlp; u8 *pcmd; u32 *data; u32 ulp_status = get_job_ulpstatus(phba, rspiocb); u32 ulp_word4 = get_job_word4(phba, rspiocb); struct lpfc_dmabuf *dmabuf = icmdiocb->cmd_dmabuf; struct lpfc_vmid *vmid; vmid = vmid_context->vmp; if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) ndlp = NULL; prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list); if (!prsp) goto out; pcmd = prsp->virt; data = (u32 *)pcmd; if (data[0] == ELS_CMD_LS_RJT) { lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, "4532 UVEM LS_RJT %x %x\n", data[0], data[1]); goto out; } if (ulp_status) { lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, "4533 UVEM error status %x: %x\n", ulp_status, ulp_word4); goto out; } spin_lock(&phba->hbalock); /* Set IN USE flag */ vport->vmid_flag |= LPFC_VMID_IN_USE; phba->pport->vmid_flag |= LPFC_VMID_IN_USE; spin_unlock(&phba->hbalock); if (vmid_context->instantiated) { write_lock(&vport->vmid_lock); vmid->flag |= LPFC_VMID_REGISTERED; vmid->flag &= ~LPFC_VMID_REQ_REGISTER; write_unlock(&vport->vmid_lock); } out: kfree(vmid_context); lpfc_els_free_iocb(phba, icmdiocb); lpfc_nlp_put(ndlp); }
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