| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Michael Chan | 1807 | 88.06% | 3 | 11.54% |
| Eddie Wai | 116 | 5.65% | 12 | 46.15% |
| Barak Witkowsky | 101 | 4.92% | 1 | 3.85% |
| Anil Veerabhadrappa | 15 | 0.73% | 3 | 11.54% |
| Kees Cook | 4 | 0.19% | 1 | 3.85% |
| Bart Van Assche | 3 | 0.15% | 1 | 3.85% |
| Dmitry Kravkov | 2 | 0.10% | 1 | 3.85% |
| Ingo Molnar | 1 | 0.05% | 1 | 3.85% |
| Jeff Kirsher | 1 | 0.05% | 1 | 3.85% |
| Masanari Iida | 1 | 0.05% | 1 | 3.85% |
| Vikas Chaudhary | 1 | 0.05% | 1 | 3.85% |
| Total | 2052 | 26 |
/* bnx2i.h: QLogic NetXtreme II iSCSI driver. * * Copyright (c) 2006 - 2013 Broadcom Corporation * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved. * Copyright (c) 2007, 2008 Mike Christie * Copyright (c) 2014, QLogic Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation. * * Written by: Anil Veerabhadrappa (anilgv@broadcom.com) * Previously Maintained by: Eddie Wai (eddie.wai@broadcom.com) * Maintained by: QLogic-Storage-Upstream@qlogic.com */ #ifndef _BNX2I_H_ #define _BNX2I_H_ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/errno.h> #include <linux/pci.h> #include <linux/spinlock.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/sched/signal.h> #include <linux/in.h> #include <linux/kfifo.h> #include <linux/netdevice.h> #include <linux/completion.h> #include <linux/kthread.h> #include <linux/cpu.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_device.h> #include <scsi/scsi_eh.h> #include <scsi/scsi_host.h> #include <scsi/scsi.h> #include <scsi/iscsi_proto.h> #include <scsi/libiscsi.h> #include <scsi/scsi_transport_iscsi.h> #include "../../net/ethernet/broadcom/cnic_if.h" #include "57xx_iscsi_hsi.h" #include "57xx_iscsi_constants.h" #include "../../net/ethernet/broadcom/bnx2x/bnx2x_mfw_req.h" #define BNX2_ISCSI_DRIVER_NAME "bnx2i" #define BNX2I_MAX_ADAPTERS 8 #define ISCSI_MAX_CONNS_PER_HBA 128 #define ISCSI_MAX_SESS_PER_HBA ISCSI_MAX_CONNS_PER_HBA #define ISCSI_MAX_CMDS_PER_SESS 128 /* Total active commands across all connections supported by devices */ #define ISCSI_MAX_CMDS_PER_HBA_5708 (28 * (ISCSI_MAX_CMDS_PER_SESS - 1)) #define ISCSI_MAX_CMDS_PER_HBA_5709 (128 * (ISCSI_MAX_CMDS_PER_SESS - 1)) #define ISCSI_MAX_CMDS_PER_HBA_57710 (256 * (ISCSI_MAX_CMDS_PER_SESS - 1)) #define ISCSI_MAX_BDS_PER_CMD 32 #define MAX_PAGES_PER_CTRL_STRUCT_POOL 8 #define BNX2I_RESERVED_SLOW_PATH_CMD_SLOTS 4 #define BNX2X_DB_SHIFT 3 /* 5706/08 hardware has limit on maximum buffer size per BD it can handle */ #define MAX_BD_LENGTH 65535 #define BD_SPLIT_SIZE 32768 /* min, max & default values for SQ/RQ/CQ size, configurable via' modparam */ #define BNX2I_SQ_WQES_MIN 16 #define BNX2I_570X_SQ_WQES_MAX 128 #define BNX2I_5770X_SQ_WQES_MAX 512 #define BNX2I_570X_SQ_WQES_DEFAULT 128 #define BNX2I_5770X_SQ_WQES_DEFAULT 128 #define BNX2I_570X_CQ_WQES_MAX 128 #define BNX2I_5770X_CQ_WQES_MAX 512 #define BNX2I_RQ_WQES_MIN 16 #define BNX2I_RQ_WQES_MAX 32 #define BNX2I_RQ_WQES_DEFAULT 16 /* CCELLs per conn */ #define BNX2I_CCELLS_MIN 16 #define BNX2I_CCELLS_MAX 96 #define BNX2I_CCELLS_DEFAULT 64 #define ITT_INVALID_SIGNATURE 0xFFFF #define ISCSI_CMD_CLEANUP_TIMEOUT 100 #define BNX2I_CONN_CTX_BUF_SIZE 16384 #define BNX2I_SQ_WQE_SIZE 64 #define BNX2I_RQ_WQE_SIZE 256 #define BNX2I_CQE_SIZE 64 #define MB_KERNEL_CTX_SHIFT 8 #define MB_KERNEL_CTX_SIZE (1 << MB_KERNEL_CTX_SHIFT) #define CTX_SHIFT 7 #define GET_CID_NUM(cid_addr) ((cid_addr) >> CTX_SHIFT) #define CTX_OFFSET 0x10000 #define MAX_CID_CNT 0x4000 #define BNX2I_570X_PAGE_SIZE_DEFAULT 4096 /* 5709 context registers */ #define BNX2_MQ_CONFIG2 0x00003d00 #define BNX2_MQ_CONFIG2_CONT_SZ (0x7L<<4) #define BNX2_MQ_CONFIG2_FIRST_L4L5 (0x1fL<<8) /* 57710's BAR2 is mapped to doorbell registers */ #define BNX2X_DOORBELL_PCI_BAR 2 #define BNX2X_MAX_CQS 8 #define CNIC_ARM_CQE 1 #define CNIC_ARM_CQE_FP 2 #define CNIC_DISARM_CQE 0 #define REG_RD(__hba, offset) \ readl(__hba->regview + offset) #define REG_WR(__hba, offset, val) \ writel(val, __hba->regview + offset) #ifdef CONFIG_32BIT #define GET_STATS_64(__hba, dst, field) \ do { \ spin_lock_bh(&__hba->stat_lock); \ dst->field##_lo = __hba->stats.field##_lo; \ dst->field##_hi = __hba->stats.field##_hi; \ spin_unlock_bh(&__hba->stat_lock); \ } while (0) #define ADD_STATS_64(__hba, field, len) \ do { \ if (spin_trylock(&__hba->stat_lock)) { \ if (__hba->stats.field##_lo + len < \ __hba->stats.field##_lo) \ __hba->stats.field##_hi++; \ __hba->stats.field##_lo += len; \ spin_unlock(&__hba->stat_lock); \ } \ } while (0) #else #define GET_STATS_64(__hba, dst, field) \ do { \ u64 val, *out; \ \ val = __hba->bnx2i_stats.field; \ out = (u64 *)&__hba->stats.field##_lo; \ *out = cpu_to_le64(val); \ out = (u64 *)&dst->field##_lo; \ *out = cpu_to_le64(val); \ } while (0) #define ADD_STATS_64(__hba, field, len) \ do { \ __hba->bnx2i_stats.field += len; \ } while (0) #endif /** * struct generic_pdu_resc - login pdu resource structure * * @req_buf: driver buffer used to stage payload associated with * the login request * @req_dma_addr: dma address for iscsi login request payload buffer * @req_buf_size: actual login request payload length * @req_wr_ptr: pointer into login request buffer when next data is * to be written * @resp_hdr: iscsi header where iscsi login response header is to * be recreated * @resp_buf: buffer to stage login response payload * @resp_dma_addr: login response payload buffer dma address * @resp_buf_size: login response paylod length * @resp_wr_ptr: pointer into login response buffer when next data is * to be written * @req_bd_tbl: iscsi login request payload BD table * @req_bd_dma: login request BD table dma address * @resp_bd_tbl: iscsi login response payload BD table * @resp_bd_dma: login request BD table dma address * * following structure defines buffer info for generic pdus such as iSCSI Login, * Logout and NOP */ struct generic_pdu_resc { char *req_buf; dma_addr_t req_dma_addr; u32 req_buf_size; char *req_wr_ptr; struct iscsi_hdr resp_hdr; char *resp_buf; dma_addr_t resp_dma_addr; u32 resp_buf_size; char *resp_wr_ptr; char *req_bd_tbl; dma_addr_t req_bd_dma; char *resp_bd_tbl; dma_addr_t resp_bd_dma; }; /** * struct bd_resc_page - tracks DMA'able memory allocated for BD tables * * @link: list head to link elements * @max_ptrs: maximun pointers that can be stored in this page * @num_valid: number of pointer valid in this page * @page: base addess for page pointer array * * structure to track DMA'able memory allocated for command BD tables */ struct bd_resc_page { struct list_head link; u32 max_ptrs; u32 num_valid; void *page[1]; }; /** * struct io_bdt - I/O buffer destricptor table * * @bd_tbl: BD table's virtual address * @bd_tbl_dma: BD table's dma address * @bd_valid: num valid BD entries * * IO BD table */ struct io_bdt { struct iscsi_bd *bd_tbl; dma_addr_t bd_tbl_dma; u16 bd_valid; }; /** * bnx2i_cmd - iscsi command structure * * @hdr: iSCSI header * @conn: iscsi_conn pointer * @scsi_cmd: SCSI-ML task pointer corresponding to this iscsi cmd * @sg: SG list * @io_tbl: buffer descriptor (BD) table * @bd_tbl_dma: buffer descriptor (BD) table's dma address * @req: bnx2i specific command request struct */ struct bnx2i_cmd { struct iscsi_hdr hdr; struct bnx2i_conn *conn; struct scsi_cmnd *scsi_cmd; struct scatterlist *sg; struct io_bdt io_tbl; dma_addr_t bd_tbl_dma; struct bnx2i_cmd_request req; }; /** * struct bnx2i_conn - iscsi connection structure * * @cls_conn: pointer to iscsi cls conn * @hba: adapter structure pointer * @iscsi_conn_cid: iscsi conn id * @fw_cid: firmware iscsi context id * @ep: endpoint structure pointer * @gen_pdu: login/nopout/logout pdu resources * @violation_notified: bit mask used to track iscsi error/warning messages * already printed out * @work_cnt: keeps track of the number of outstanding work * * iSCSI connection structure */ struct bnx2i_conn { struct iscsi_cls_conn *cls_conn; struct bnx2i_hba *hba; struct completion cmd_cleanup_cmpl; u32 iscsi_conn_cid; #define BNX2I_CID_RESERVED 0x5AFF u32 fw_cid; struct timer_list poll_timer; /* * Queue Pair (QP) related structure elements. */ struct bnx2i_endpoint *ep; /* * Buffer for login negotiation process */ struct generic_pdu_resc gen_pdu; u64 violation_notified; atomic_t work_cnt; }; /** * struct iscsi_cid_queue - Per adapter iscsi cid queue * * @cid_que_base: queue base memory * @cid_que: queue memory pointer * @cid_q_prod_idx: produce index * @cid_q_cons_idx: consumer index * @cid_q_max_idx: max index. used to detect wrap around condition * @cid_free_cnt: queue size * @conn_cid_tbl: iscsi cid to conn structure mapping table * * Per adapter iSCSI CID Queue */ struct iscsi_cid_queue { void *cid_que_base; u32 *cid_que; u32 cid_q_prod_idx; u32 cid_q_cons_idx; u32 cid_q_max_idx; u32 cid_free_cnt; struct bnx2i_conn **conn_cid_tbl; }; struct bnx2i_stats_info { u64 rx_pdus; u64 rx_bytes; u64 tx_pdus; u64 tx_bytes; }; /** * struct bnx2i_hba - bnx2i adapter structure * * @link: list head to link elements * @cnic: pointer to cnic device * @pcidev: pointer to pci dev * @netdev: pointer to netdev structure * @regview: mapped PCI register space * @age: age, incremented by every recovery * @cnic_dev_type: cnic device type, 5706/5708/5709/57710 * @mail_queue_access: mailbox queue access mode, applicable to 5709 only * @reg_with_cnic: indicates whether the device is register with CNIC * @adapter_state: adapter state, UP, GOING_DOWN, LINK_DOWN * @mtu_supported: Ethernet MTU supported * @shost: scsi host pointer * @max_sqes: SQ size * @max_rqes: RQ size * @max_cqes: CQ size * @num_ccell: number of command cells per connection * @ofld_conns_active: active connection list * @eh_wait: wait queue for the endpoint to shutdown * @max_active_conns: max offload connections supported by this device * @cid_que: iscsi cid queue * @ep_rdwr_lock: read / write lock to synchronize various ep lists * @ep_ofld_list: connection list for pending offload completion * @ep_active_list: connection list for active offload endpoints * @ep_destroy_list: connection list for pending offload completion * @mp_bd_tbl: BD table to be used with middle path requests * @mp_bd_dma: DMA address of 'mp_bd_tbl' memory buffer * @dummy_buffer: Dummy buffer to be used with zero length scsicmd reqs * @dummy_buf_dma: DMA address of 'dummy_buffer' memory buffer * @lock: lock to synchonize access to hba structure * @hba_shutdown_tmo: Timeout value to shutdown each connection * @conn_teardown_tmo: Timeout value to tear down each connection * @conn_ctx_destroy_tmo: Timeout value to destroy context of each connection * @pci_did: PCI device ID * @pci_vid: PCI vendor ID * @pci_sdid: PCI subsystem device ID * @pci_svid: PCI subsystem vendor ID * @pci_func: PCI function number in system pci tree * @pci_devno: PCI device number in system pci tree * @num_wqe_sent: statistic counter, total wqe's sent * @num_cqe_rcvd: statistic counter, total cqe's received * @num_intr_claimed: statistic counter, total interrupts claimed * @link_changed_count: statistic counter, num of link change notifications * received * @ipaddr_changed_count: statistic counter, num times IP address changed while * at least one connection is offloaded * @num_sess_opened: statistic counter, total num sessions opened * @num_conn_opened: statistic counter, total num conns opened on this hba * @ctx_ccell_tasks: captures number of ccells and tasks supported by * currently offloaded connection, used to decode * context memory * @stat_lock: spin lock used by the statistic collector (32 bit) * @stats: local iSCSI statistic collection place holder * * Adapter Data Structure */ struct bnx2i_hba { struct list_head link; struct cnic_dev *cnic; struct pci_dev *pcidev; struct net_device *netdev; void __iomem *regview; resource_size_t reg_base; u32 age; unsigned long cnic_dev_type; #define BNX2I_NX2_DEV_5706 0x0 #define BNX2I_NX2_DEV_5708 0x1 #define BNX2I_NX2_DEV_5709 0x2 #define BNX2I_NX2_DEV_57710 0x3 u32 mail_queue_access; #define BNX2I_MQ_KERNEL_MODE 0x0 #define BNX2I_MQ_KERNEL_BYPASS_MODE 0x1 #define BNX2I_MQ_BIN_MODE 0x2 unsigned long reg_with_cnic; #define BNX2I_CNIC_REGISTERED 1 unsigned long adapter_state; #define ADAPTER_STATE_UP 0 #define ADAPTER_STATE_GOING_DOWN 1 #define ADAPTER_STATE_LINK_DOWN 2 #define ADAPTER_STATE_INIT_FAILED 31 unsigned int mtu_supported; #define BNX2I_MAX_MTU_SUPPORTED 9000 struct Scsi_Host *shost; u32 max_sqes; u32 max_rqes; u32 max_cqes; u32 num_ccell; int ofld_conns_active; wait_queue_head_t eh_wait; int max_active_conns; struct iscsi_cid_queue cid_que; rwlock_t ep_rdwr_lock; struct list_head ep_ofld_list; struct list_head ep_active_list; struct list_head ep_destroy_list; /* * BD table to be used with MP (Middle Path requests. */ char *mp_bd_tbl; dma_addr_t mp_bd_dma; char *dummy_buffer; dma_addr_t dummy_buf_dma; spinlock_t lock; /* protects hba structure access */ struct mutex net_dev_lock;/* sync net device access */ int hba_shutdown_tmo; int conn_teardown_tmo; int conn_ctx_destroy_tmo; /* * PCI related info. */ u16 pci_did; u16 pci_vid; u16 pci_sdid; u16 pci_svid; u16 pci_func; u16 pci_devno; /* * Following are a bunch of statistics useful during development * and later stage for score boarding. */ u32 num_wqe_sent; u32 num_cqe_rcvd; u32 num_intr_claimed; u32 link_changed_count; u32 ipaddr_changed_count; u32 num_sess_opened; u32 num_conn_opened; unsigned int ctx_ccell_tasks; #ifdef CONFIG_32BIT spinlock_t stat_lock; #endif struct bnx2i_stats_info bnx2i_stats; struct iscsi_stats_info stats; }; /******************************************************************************* * QP [ SQ / RQ / CQ ] info. ******************************************************************************/ /* * SQ/RQ/CQ generic structure definition */ struct sqe { u8 sqe_byte[BNX2I_SQ_WQE_SIZE]; }; struct rqe { u8 rqe_byte[BNX2I_RQ_WQE_SIZE]; }; struct cqe { u8 cqe_byte[BNX2I_CQE_SIZE]; }; enum { #if defined(__LITTLE_ENDIAN) CNIC_EVENT_COAL_INDEX = 0x0, CNIC_SEND_DOORBELL = 0x4, CNIC_EVENT_CQ_ARM = 0x7, CNIC_RECV_DOORBELL = 0x8 #elif defined(__BIG_ENDIAN) CNIC_EVENT_COAL_INDEX = 0x2, CNIC_SEND_DOORBELL = 0x6, CNIC_EVENT_CQ_ARM = 0x4, CNIC_RECV_DOORBELL = 0xa #endif }; /* * CQ DB */ struct bnx2x_iscsi_cq_pend_cmpl { /* CQ producer, updated by Ustorm */ u16 ustrom_prod; /* CQ pending completion counter */ u16 pend_cntr; }; struct bnx2i_5771x_cq_db { struct bnx2x_iscsi_cq_pend_cmpl qp_pend_cmpl[BNX2X_MAX_CQS]; /* CQ pending completion ITT array */ u16 itt[BNX2X_MAX_CQS]; /* Cstorm CQ sequence to notify array, updated by driver */; u16 sqn[BNX2X_MAX_CQS]; u32 reserved[4] /* 16 byte allignment */; }; struct bnx2i_5771x_sq_rq_db { u16 prod_idx; u8 reserved0[62]; /* Pad structure size to 64 bytes */ }; struct bnx2i_5771x_dbell_hdr { u8 header; /* 1 for rx doorbell, 0 for tx doorbell */ #define B577XX_DOORBELL_HDR_RX (0x1<<0) #define B577XX_DOORBELL_HDR_RX_SHIFT 0 /* 0 for normal doorbell, 1 for advertise wnd doorbell */ #define B577XX_DOORBELL_HDR_DB_TYPE (0x1<<1) #define B577XX_DOORBELL_HDR_DB_TYPE_SHIFT 1 /* rdma tx only: DPM transaction size specifier (64/128/256/512B) */ #define B577XX_DOORBELL_HDR_DPM_SIZE (0x3<<2) #define B577XX_DOORBELL_HDR_DPM_SIZE_SHIFT 2 /* connection type */ #define B577XX_DOORBELL_HDR_CONN_TYPE (0xF<<4) #define B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT 4 }; struct bnx2i_5771x_dbell { struct bnx2i_5771x_dbell_hdr dbell; u8 pad[3]; }; /** * struct qp_info - QP (share queue region) atrributes structure * * @ctx_base: ioremapped pci register base to access doorbell register * pertaining to this offloaded connection * @sq_virt: virtual address of send queue (SQ) region * @sq_phys: DMA address of SQ memory region * @sq_mem_size: SQ size * @sq_prod_qe: SQ producer entry pointer * @sq_cons_qe: SQ consumer entry pointer * @sq_first_qe: virtual address of first entry in SQ * @sq_last_qe: virtual address of last entry in SQ * @sq_prod_idx: SQ producer index * @sq_cons_idx: SQ consumer index * @sqe_left: number sq entry left * @sq_pgtbl_virt: page table describing buffer consituting SQ region * @sq_pgtbl_phys: dma address of 'sq_pgtbl_virt' * @sq_pgtbl_size: SQ page table size * @cq_virt: virtual address of completion queue (CQ) region * @cq_phys: DMA address of RQ memory region * @cq_mem_size: CQ size * @cq_prod_qe: CQ producer entry pointer * @cq_cons_qe: CQ consumer entry pointer * @cq_first_qe: virtual address of first entry in CQ * @cq_last_qe: virtual address of last entry in CQ * @cq_prod_idx: CQ producer index * @cq_cons_idx: CQ consumer index * @cqe_left: number cq entry left * @cqe_size: size of each CQ entry * @cqe_exp_seq_sn: next expected CQE sequence number * @cq_pgtbl_virt: page table describing buffer consituting CQ region * @cq_pgtbl_phys: dma address of 'cq_pgtbl_virt' * @cq_pgtbl_size: CQ page table size * @rq_virt: virtual address of receive queue (RQ) region * @rq_phys: DMA address of RQ memory region * @rq_mem_size: RQ size * @rq_prod_qe: RQ producer entry pointer * @rq_cons_qe: RQ consumer entry pointer * @rq_first_qe: virtual address of first entry in RQ * @rq_last_qe: virtual address of last entry in RQ * @rq_prod_idx: RQ producer index * @rq_cons_idx: RQ consumer index * @rqe_left: number rq entry left * @rq_pgtbl_virt: page table describing buffer consituting RQ region * @rq_pgtbl_phys: dma address of 'rq_pgtbl_virt' * @rq_pgtbl_size: RQ page table size * * queue pair (QP) is a per connection shared data structure which is used * to send work requests (SQ), receive completion notifications (CQ) * and receive asynchoronous / scsi sense info (RQ). 'qp_info' structure * below holds queue memory, consumer/producer indexes and page table * information */ struct qp_info { void __iomem *ctx_base; #define DPM_TRIGER_TYPE 0x40 #define BNX2I_570x_QUE_DB_SIZE 0 #define BNX2I_5771x_QUE_DB_SIZE 16 struct sqe *sq_virt; dma_addr_t sq_phys; u32 sq_mem_size; struct sqe *sq_prod_qe; struct sqe *sq_cons_qe; struct sqe *sq_first_qe; struct sqe *sq_last_qe; u16 sq_prod_idx; u16 sq_cons_idx; u32 sqe_left; void *sq_pgtbl_virt; dma_addr_t sq_pgtbl_phys; u32 sq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */ struct cqe *cq_virt; dma_addr_t cq_phys; u32 cq_mem_size; struct cqe *cq_prod_qe; struct cqe *cq_cons_qe; struct cqe *cq_first_qe; struct cqe *cq_last_qe; u16 cq_prod_idx; u16 cq_cons_idx; u32 cqe_left; u32 cqe_size; u32 cqe_exp_seq_sn; void *cq_pgtbl_virt; dma_addr_t cq_pgtbl_phys; u32 cq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */ struct rqe *rq_virt; dma_addr_t rq_phys; u32 rq_mem_size; struct rqe *rq_prod_qe; struct rqe *rq_cons_qe; struct rqe *rq_first_qe; struct rqe *rq_last_qe; u16 rq_prod_idx; u16 rq_cons_idx; u32 rqe_left; void *rq_pgtbl_virt; dma_addr_t rq_pgtbl_phys; u32 rq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */ }; /* * CID handles */ struct ep_handles { u32 fw_cid; u32 drv_iscsi_cid; u16 pg_cid; u16 rsvd; }; enum { EP_STATE_IDLE = 0x0, EP_STATE_PG_OFLD_START = 0x1, EP_STATE_PG_OFLD_COMPL = 0x2, EP_STATE_OFLD_START = 0x4, EP_STATE_OFLD_COMPL = 0x8, EP_STATE_CONNECT_START = 0x10, EP_STATE_CONNECT_COMPL = 0x20, EP_STATE_ULP_UPDATE_START = 0x40, EP_STATE_ULP_UPDATE_COMPL = 0x80, EP_STATE_DISCONN_START = 0x100, EP_STATE_DISCONN_COMPL = 0x200, EP_STATE_CLEANUP_START = 0x400, EP_STATE_CLEANUP_CMPL = 0x800, EP_STATE_TCP_FIN_RCVD = 0x1000, EP_STATE_TCP_RST_RCVD = 0x2000, EP_STATE_LOGOUT_SENT = 0x4000, EP_STATE_LOGOUT_RESP_RCVD = 0x8000, EP_STATE_PG_OFLD_FAILED = 0x1000000, EP_STATE_ULP_UPDATE_FAILED = 0x2000000, EP_STATE_CLEANUP_FAILED = 0x4000000, EP_STATE_OFLD_FAILED = 0x8000000, EP_STATE_CONNECT_FAILED = 0x10000000, EP_STATE_DISCONN_TIMEDOUT = 0x20000000, EP_STATE_OFLD_FAILED_CID_BUSY = 0x80000000, }; /** * struct bnx2i_endpoint - representation of tcp connection in NX2 world * * @link: list head to link elements * @hba: adapter to which this connection belongs * @conn: iscsi connection this EP is linked to * @cls_ep: associated iSCSI endpoint pointer * @cm_sk: cnic sock struct * @hba_age: age to detect if 'iscsid' issues ep_disconnect() * after HBA reset is completed by bnx2i/cnic/bnx2 * modules * @state: tracks offload connection state machine * @timestamp: tracks the start time when the ep begins to connect * @num_active_cmds: tracks the number of outstanding commands for this ep * @ec_shift: the amount of shift as part of the event coal calc * @qp: QP information * @ids: contains chip allocated *context id* & driver assigned * *iscsi cid* * @ofld_timer: offload timer to detect timeout * @ofld_wait: wait queue * * Endpoint Structure - equivalent of tcp socket structure */ struct bnx2i_endpoint { struct list_head link; struct bnx2i_hba *hba; struct bnx2i_conn *conn; struct iscsi_endpoint *cls_ep; struct cnic_sock *cm_sk; u32 hba_age; u32 state; unsigned long timestamp; atomic_t num_active_cmds; u32 ec_shift; struct qp_info qp; struct ep_handles ids; #define ep_iscsi_cid ids.drv_iscsi_cid #define ep_cid ids.fw_cid #define ep_pg_cid ids.pg_cid struct timer_list ofld_timer; wait_queue_head_t ofld_wait; }; struct bnx2i_work { struct list_head list; struct iscsi_session *session; struct bnx2i_conn *bnx2i_conn; struct cqe cqe; }; struct bnx2i_percpu_s { struct task_struct *iothread; struct list_head work_list; spinlock_t p_work_lock; }; /* Global variables */ extern unsigned int error_mask1, error_mask2; extern u64 iscsi_error_mask; extern unsigned int en_tcp_dack; extern unsigned int event_coal_div; extern unsigned int event_coal_min; extern struct scsi_transport_template *bnx2i_scsi_xport_template; extern struct iscsi_transport bnx2i_iscsi_transport; extern struct cnic_ulp_ops bnx2i_cnic_cb; extern unsigned int sq_size; extern unsigned int rq_size; extern const struct attribute_group *bnx2i_dev_groups[]; /* * Function Prototypes */ extern void bnx2i_identify_device(struct bnx2i_hba *hba, struct cnic_dev *dev); extern void bnx2i_ulp_init(struct cnic_dev *dev); extern void bnx2i_ulp_exit(struct cnic_dev *dev); extern void bnx2i_start(void *handle); extern void bnx2i_stop(void *handle); extern int bnx2i_get_stats(void *handle); extern struct bnx2i_hba *get_adapter_list_head(void); struct bnx2i_conn *bnx2i_get_conn_from_id(struct bnx2i_hba *hba, u16 iscsi_cid); int bnx2i_alloc_ep_pool(void); void bnx2i_release_ep_pool(void); struct bnx2i_endpoint *bnx2i_ep_ofld_list_next(struct bnx2i_hba *hba); struct bnx2i_endpoint *bnx2i_ep_destroy_list_next(struct bnx2i_hba *hba); struct bnx2i_hba *bnx2i_find_hba_for_cnic(struct cnic_dev *cnic); struct bnx2i_hba *bnx2i_alloc_hba(struct cnic_dev *cnic); void bnx2i_free_hba(struct bnx2i_hba *hba); void bnx2i_get_rq_buf(struct bnx2i_conn *conn, char *ptr, int len); void bnx2i_put_rq_buf(struct bnx2i_conn *conn, int count); void bnx2i_iscsi_unmap_sg_list(struct bnx2i_cmd *cmd); void bnx2i_drop_session(struct iscsi_cls_session *session); extern int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba); extern int bnx2i_send_iscsi_login(struct bnx2i_conn *conn, struct iscsi_task *mtask); extern int bnx2i_send_iscsi_tmf(struct bnx2i_conn *conn, struct iscsi_task *mtask); extern int bnx2i_send_iscsi_text(struct bnx2i_conn *conn, struct iscsi_task *mtask); extern int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *conn, struct bnx2i_cmd *cmnd); extern int bnx2i_send_iscsi_nopout(struct bnx2i_conn *conn, struct iscsi_task *mtask, char *datap, int data_len, int unsol); extern int bnx2i_send_iscsi_logout(struct bnx2i_conn *conn, struct iscsi_task *mtask); extern void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd); extern int bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep); extern void bnx2i_update_iscsi_conn(struct iscsi_conn *conn); extern int bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep); extern int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep); extern void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep); extern void bnx2i_ep_ofld_timer(struct timer_list *t); extern struct bnx2i_endpoint *bnx2i_find_ep_in_ofld_list( struct bnx2i_hba *hba, u32 iscsi_cid); extern struct bnx2i_endpoint *bnx2i_find_ep_in_destroy_list( struct bnx2i_hba *hba, u32 iscsi_cid); extern int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep); extern int bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action); extern int bnx2i_hw_ep_disconnect(struct bnx2i_endpoint *bnx2i_ep); /* Debug related function prototypes */ extern void bnx2i_print_pend_cmd_queue(struct bnx2i_conn *conn); extern void bnx2i_print_active_cmd_queue(struct bnx2i_conn *conn); extern void bnx2i_print_xmit_pdu_queue(struct bnx2i_conn *conn); extern void bnx2i_print_recv_state(struct bnx2i_conn *conn); extern int bnx2i_percpu_io_thread(void *arg); extern int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, struct bnx2i_conn *bnx2i_conn, struct cqe *cqe); #endif
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