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Release 4.14 net/ncsi/ncsi-rsp.c

Directory: net/ncsi
/*
 * Copyright Gavin Shan, IBM Corporation 2016.
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>

#include <net/ncsi.h>
#include <net/net_namespace.h>
#include <net/sock.h>

#include "internal.h"
#include "ncsi-pkt.h"


static int ncsi_validate_rsp_pkt(struct ncsi_request *nr, unsigned short payload) { struct ncsi_rsp_pkt_hdr *h; u32 checksum; __be32 *pchecksum; /* Check NCSI packet header. We don't need validate * the packet type, which should have been checked * before calling this function. */ h = (struct ncsi_rsp_pkt_hdr *)skb_network_header(nr->rsp); if (h->common.revision != NCSI_PKT_REVISION) return -EINVAL; if (ntohs(h->common.length) != payload) return -EINVAL; /* Check on code and reason */ if (ntohs(h->code) != NCSI_PKT_RSP_C_COMPLETED || ntohs(h->reason) != NCSI_PKT_RSP_R_NO_ERROR) return -EINVAL; /* Validate checksum, which might be zeroes if the * sender doesn't support checksum according to NCSI * specification. */ pchecksum = (__be32 *)((void *)(h + 1) + payload - 4); if (ntohl(*pchecksum) == 0) return 0; checksum = ncsi_calculate_checksum((unsigned char *)h, sizeof(*h) + payload - 4); if (*pchecksum != htonl(checksum)) return -EINVAL; return 0; }

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static int ncsi_rsp_handler_cis(struct ncsi_request *nr) { struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_package *np; struct ncsi_channel *nc; unsigned char id; rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, &np, &nc); if (!nc) { if (ndp->flags & NCSI_DEV_PROBED) return -ENXIO; id = NCSI_CHANNEL_INDEX(rsp->rsp.common.channel); nc = ncsi_add_channel(np, id); } return nc ? 0 : -ENODEV; }

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static int ncsi_rsp_handler_sp(struct ncsi_request *nr) { struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_package *np; unsigned char id; /* Add the package if it's not existing. Otherwise, * to change the state of its child channels. */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, &np, NULL); if (!np) { if (ndp->flags & NCSI_DEV_PROBED) return -ENXIO; id = NCSI_PACKAGE_INDEX(rsp->rsp.common.channel); np = ncsi_add_package(ndp, id); if (!np) return -ENODEV; } return 0; }

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static int ncsi_rsp_handler_dp(struct ncsi_request *nr) { struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_package *np; struct ncsi_channel *nc; unsigned long flags; /* Find the package */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, &np, NULL); if (!np) return -ENODEV; /* Change state of all channels attached to the package */ NCSI_FOR_EACH_CHANNEL(np, nc) { spin_lock_irqsave(&nc->lock, flags); nc->state = NCSI_CHANNEL_INACTIVE; spin_unlock_irqrestore(&nc->lock, flags); } return 0; }

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static int ncsi_rsp_handler_ec(struct ncsi_request *nr) { struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; ncm = &nc->modes[NCSI_MODE_ENABLE]; if (ncm->enable) return -EBUSY; ncm->enable = 1; return 0; }

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static int ncsi_rsp_handler_dc(struct ncsi_request *nr) { struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; int ret; ret = ncsi_validate_rsp_pkt(nr, 4); if (ret) return ret; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; ncm = &nc->modes[NCSI_MODE_ENABLE]; if (!ncm->enable) return -EBUSY; ncm->enable = 0; return 0; }

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static int ncsi_rsp_handler_rc(struct ncsi_request *nr) { struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; unsigned long flags; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Update state for the specified channel */ spin_lock_irqsave(&nc->lock, flags); nc->state = NCSI_CHANNEL_INACTIVE; spin_unlock_irqrestore(&nc->lock, flags); return 0; }

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static int ncsi_rsp_handler_ecnt(struct ncsi_request *nr) { struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; ncm = &nc->modes[NCSI_MODE_TX_ENABLE]; if (ncm->enable) return -EBUSY; ncm->enable = 1; return 0; }

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static int ncsi_rsp_handler_dcnt(struct ncsi_request *nr) { struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; ncm = &nc->modes[NCSI_MODE_TX_ENABLE]; if (!ncm->enable) return -EBUSY; ncm->enable = 1; return 0; }

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static int ncsi_rsp_handler_ae(struct ncsi_request *nr) { struct ncsi_cmd_ae_pkt *cmd; struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Check if the AEN has been enabled */ ncm = &nc->modes[NCSI_MODE_AEN]; if (ncm->enable) return -EBUSY; /* Update to AEN configuration */ cmd = (struct ncsi_cmd_ae_pkt *)skb_network_header(nr->cmd); ncm->enable = 1; ncm->data[0] = cmd->mc_id; ncm->data[1] = ntohl(cmd->mode); return 0; }

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static int ncsi_rsp_handler_sl(struct ncsi_request *nr) { struct ncsi_cmd_sl_pkt *cmd; struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; cmd = (struct ncsi_cmd_sl_pkt *)skb_network_header(nr->cmd); ncm = &nc->modes[NCSI_MODE_LINK]; ncm->data[0] = ntohl(cmd->mode); ncm->data[1] = ntohl(cmd->oem_mode); return 0; }

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static int ncsi_rsp_handler_gls(struct ncsi_request *nr) { struct ncsi_rsp_gls_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; unsigned long flags; /* Find the package and channel */ rsp = (struct ncsi_rsp_gls_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; ncm = &nc->modes[NCSI_MODE_LINK]; ncm->data[2] = ntohl(rsp->status); ncm->data[3] = ntohl(rsp->other); ncm->data[4] = ntohl(rsp->oem_status); if (nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN) return 0; /* Reset the channel monitor if it has been enabled */ spin_lock_irqsave(&nc->lock, flags); nc->monitor.state = NCSI_CHANNEL_MONITOR_START; spin_unlock_irqrestore(&nc->lock, flags); return 0; }

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static int ncsi_rsp_handler_svf(struct ncsi_request *nr) { struct ncsi_cmd_svf_pkt *cmd; struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_filter *ncf; unsigned short vlan; int ret; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; cmd = (struct ncsi_cmd_svf_pkt *)skb_network_header(nr->cmd); ncf = nc->filters[NCSI_FILTER_VLAN]; if (!ncf) return -ENOENT; if (cmd->index >= ncf->total) return -ERANGE; /* Add or remove the VLAN filter */ if (!(cmd->enable & 0x1)) { /* HW indexes from 1 */ ret = ncsi_remove_filter(nc, NCSI_FILTER_VLAN, cmd->index - 1); } else { vlan = ntohs(cmd->vlan); ret = ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan); } return ret; }

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static int ncsi_rsp_handler_ev(struct ncsi_request *nr) { struct ncsi_cmd_ev_pkt *cmd; struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Check if VLAN mode has been enabled */ ncm = &nc->modes[NCSI_MODE_VLAN]; if (ncm->enable) return -EBUSY; /* Update to VLAN mode */ cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(nr->cmd); ncm->enable = 1; ncm->data[0] = ntohl(cmd->mode); return 0; }

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static int ncsi_rsp_handler_dv(struct ncsi_request *nr) { struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Check if VLAN mode has been enabled */ ncm = &nc->modes[NCSI_MODE_VLAN]; if (!ncm->enable) return -EBUSY; /* Update to VLAN mode */ ncm->enable = 0; return 0; }

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static int ncsi_rsp_handler_sma(struct ncsi_request *nr) { struct ncsi_cmd_sma_pkt *cmd; struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_filter *ncf; void *bitmap; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* According to NCSI spec 1.01, the mixed filter table * isn't supported yet. */ cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(nr->cmd); switch (cmd->at_e >> 5) { case 0x0: /* UC address */ ncf = nc->filters[NCSI_FILTER_UC]; break; case 0x1: /* MC address */ ncf = nc->filters[NCSI_FILTER_MC]; break; default: return -EINVAL; } /* Sanity check on the filter */ if (!ncf) return -ENOENT; else if (cmd->index >= ncf->total) return -ERANGE; bitmap = &ncf->bitmap; if (cmd->at_e & 0x1) { if (test_and_set_bit(cmd->index, bitmap)) return -EBUSY; memcpy(ncf->data + 6 * cmd->index, cmd->mac, 6); } else { if (!test_and_clear_bit(cmd->index, bitmap)) return -EBUSY; memset(ncf->data + 6 * cmd->index, 0, 6); } return 0; }

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static int ncsi_rsp_handler_ebf(struct ncsi_request *nr) { struct ncsi_cmd_ebf_pkt *cmd; struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; /* Find the package and channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Check if broadcast filter has been enabled */ ncm = &nc->modes[NCSI_MODE_BC]; if (ncm->enable) return -EBUSY; /* Update to broadcast filter mode */ cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(nr->cmd); ncm->enable = 1; ncm->data[0] = ntohl(cmd->mode); return 0; }

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static int ncsi_rsp_handler_dbf(struct ncsi_request *nr) { struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Check if broadcast filter isn't enabled */ ncm = &nc->modes[NCSI_MODE_BC]; if (!ncm->enable) return -EBUSY; /* Update to broadcast filter mode */ ncm->enable = 0; ncm->data[0] = 0; return 0; }

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static int ncsi_rsp_handler_egmf(struct ncsi_request *nr) { struct ncsi_cmd_egmf_pkt *cmd; struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; /* Find the channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Check if multicast filter has been enabled */ ncm = &nc->modes[NCSI_MODE_MC]; if (ncm->enable) return -EBUSY; /* Update to multicast filter mode */ cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(nr->cmd); ncm->enable = 1; ncm->data[0] = ntohl(cmd->mode); return 0; }

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static int ncsi_rsp_handler_dgmf(struct ncsi_request *nr) { struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Check if multicast filter has been enabled */ ncm = &nc->modes[NCSI_MODE_MC]; if (!ncm->enable) return -EBUSY; /* Update to multicast filter mode */ ncm->enable = 0; ncm->data[0] = 0; return 0; }

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static int ncsi_rsp_handler_snfc(struct ncsi_request *nr) { struct ncsi_cmd_snfc_pkt *cmd; struct ncsi_rsp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_mode *ncm; /* Find the channel */ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Check if flow control has been enabled */ ncm = &nc->modes[NCSI_MODE_FC]; if (ncm->enable) return -EBUSY; /* Update to flow control mode */ cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(nr->cmd); ncm->enable = 1; ncm->data[0] = cmd->mode; return 0; }

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static int ncsi_rsp_handler_gvi(struct ncsi_request *nr) { struct ncsi_rsp_gvi_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_version *ncv; int i; /* Find the channel */ rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Update to channel's version info */ ncv = &nc->version; ncv->version = ntohl(rsp->ncsi_version); ncv->alpha2 = rsp->alpha2; memcpy(ncv->fw_name, rsp->fw_name, 12); ncv->fw_version = ntohl(rsp->fw_version); for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++) ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]); ncv->mf_id = ntohl(rsp->mf_id); return 0; }

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static int ncsi_rsp_handler_gc(struct ncsi_request *nr) { struct ncsi_rsp_gc_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_filter *ncf; size_t size, entry_size; int cnt, i; /* Find the channel */ rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Update channel's capabilities */ nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) & NCSI_CAP_GENERIC_MASK; nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) & NCSI_CAP_BC_MASK; nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) & NCSI_CAP_MC_MASK; nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap); nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) & NCSI_CAP_AEN_MASK; nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode & NCSI_CAP_VLAN_MASK; /* Build filters */ for (i = 0; i < NCSI_FILTER_MAX; i++) { switch (i) { case NCSI_FILTER_VLAN: cnt = rsp->vlan_cnt; entry_size = 2; break; case NCSI_FILTER_MIXED: cnt = rsp->mixed_cnt; entry_size = 6; break; case NCSI_FILTER_MC: cnt = rsp->mc_cnt; entry_size = 6; break; case NCSI_FILTER_UC: cnt = rsp->uc_cnt; entry_size = 6; break; default: continue; } if (!cnt || nc->filters[i]) continue; size = sizeof(*ncf) + cnt * entry_size; ncf = kzalloc(size, GFP_ATOMIC); if (!ncf) { pr_warn("%s: Cannot alloc filter table (%d)\n", __func__, i); return -ENOMEM; } ncf->index = i; ncf->total = cnt; if (i == NCSI_FILTER_VLAN) { /* Set VLAN filters active so they are cleared in * first configuration state */ ncf->bitmap = U64_MAX; } else { ncf->bitmap = 0x0ul; } nc->filters[i] = ncf; } return 0; }

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static int ncsi_rsp_handler_gp(struct ncsi_request *nr) { struct ncsi_rsp_gp_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; unsigned short enable, vlan; unsigned char *pdata; int table, i; /* Find the channel */ rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Modes with explicit enabled indications */ if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */ nc->modes[NCSI_MODE_BC].enable = 1; nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode); } if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */ nc->modes[NCSI_MODE_ENABLE].enable = 1; if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */ nc->modes[NCSI_MODE_TX_ENABLE].enable = 1; if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */ nc->modes[NCSI_MODE_MC].enable = 1; /* Modes without explicit enabled indications */ nc->modes[NCSI_MODE_LINK].enable = 1; nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode); nc->modes[NCSI_MODE_VLAN].enable = 1; nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode; nc->modes[NCSI_MODE_FC].enable = 1; nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode; nc->modes[NCSI_MODE_AEN].enable = 1; nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode); /* MAC addresses filter table */ pdata = (unsigned char *)rsp + 48; enable = rsp->mac_enable; for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) { if (i >= (nc->filters[NCSI_FILTER_UC]->total + nc->filters[NCSI_FILTER_MC]->total)) table = NCSI_FILTER_MIXED; else if (i >= nc->filters[NCSI_FILTER_UC]->total) table = NCSI_FILTER_MC; else table = NCSI_FILTER_UC; if (!(enable & (0x1 << i))) continue; if (ncsi_find_filter(nc, table, pdata) >= 0) continue; ncsi_add_filter(nc, table, pdata); } /* VLAN filter table */ enable = ntohs(rsp->vlan_enable); for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) { if (!(enable & (0x1 << i))) continue; vlan = ntohs(*(__be16 *)pdata); if (ncsi_find_filter(nc, NCSI_FILTER_VLAN, &vlan) >= 0) continue; ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan); } return 0; }

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static int ncsi_rsp_handler_gcps(struct ncsi_request *nr) { struct ncsi_rsp_gcps_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_stats *ncs; /* Find the channel */ rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Update HNC's statistics */ ncs = &nc->stats; ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi); ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo); ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes); ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes); ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts); ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts); ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts); ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts); ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts); ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts); ncs->hnc_fcs_err = ntohl(rsp->fcs_err); ncs->hnc_align_err = ntohl(rsp->align_err); ncs->hnc_false_carrier = ntohl(rsp->false_carrier); ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts); ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts); ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon); ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff); ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon); ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff); ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision); ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision); ncs->hnc_l_collision = ntohl(rsp->l_collision); ncs->hnc_e_collision = ntohl(rsp->e_collision); ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames); ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames); ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames); ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames); ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames); ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames); ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames); ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames); ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames); ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames); ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames); ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames); ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames); ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames); ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames); ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes); ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts); ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts); return 0; }

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static int ncsi_rsp_handler_gns(struct ncsi_request *nr) { struct ncsi_rsp_gns_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_stats *ncs; /* Find the channel */ rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Update HNC's statistics */ ncs = &nc->stats; ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds); ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds); ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs); ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs); ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts); ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts); ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts); return 0; }

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static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr) { struct ncsi_rsp_gnpts_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_channel *nc; struct ncsi_channel_stats *ncs; /* Find the channel */ rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); if (!nc) return -ENODEV; /* Update HNC's statistics */ ncs = &nc->stats; ncs->pt_tx_pkts = ntohl(rsp->tx_pkts); ncs->pt_tx_dropped = ntohl(rsp->tx_dropped); ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err); ncs->pt_tx_us_err = ntohl(rsp->tx_us_err); ncs->pt_rx_pkts = ntohl(rsp->rx_pkts); ncs->pt_rx_dropped = ntohl(rsp->rx_dropped); ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err); ncs->pt_rx_us_err = ntohl(rsp->rx_us_err); ncs->pt_rx_os_err = ntohl(rsp->rx_os_err); return 0; }

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static int ncsi_rsp_handler_gps(struct ncsi_request *nr) { struct ncsi_rsp_gps_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_package *np; /* Find the package */ rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, &np, NULL); if (!np) return -ENODEV; return 0; }

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static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr) { struct ncsi_rsp_gpuuid_pkt *rsp; struct ncsi_dev_priv *ndp = nr->ndp; struct ncsi_package *np; /* Find the package */ rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp); ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, &np, NULL); if (!np) return -ENODEV; memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid)); return 0; }

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static struct ncsi_rsp_handler { unsigned char type; int payload; int (*handler)(struct ncsi_request *nr); } ncsi_rsp_handlers[] = { { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis }, { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp }, { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp }, { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec }, { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc }, { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc }, { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt }, { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt }, { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae }, { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl }, { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls }, { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf }, { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev }, { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv }, { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma }, { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf }, { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf }, { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf }, { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf }, { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc }, { NCSI_PKT_RSP_GVI, 40, ncsi_rsp_handler_gvi }, { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc }, { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp }, { NCSI_PKT_RSP_GCPS, 172, ncsi_rsp_handler_gcps }, { NCSI_PKT_RSP_GNS, 172, ncsi_rsp_handler_gns }, { NCSI_PKT_RSP_GNPTS, 172, ncsi_rsp_handler_gnpts }, { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps }, { NCSI_PKT_RSP_OEM, 0, NULL }, { NCSI_PKT_RSP_PLDM, 0, NULL }, { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid } };
int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) { struct ncsi_rsp_handler *nrh = NULL; struct ncsi_dev *nd; struct ncsi_dev_priv *ndp; struct ncsi_request *nr; struct ncsi_pkt_hdr *hdr; unsigned long flags; int payload, i, ret; /* Find the NCSI device */ nd = ncsi_find_dev(dev); ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL; if (!ndp) return -ENODEV; /* Check if it is AEN packet */ hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb); if (hdr->type == NCSI_PKT_AEN) return ncsi_aen_handler(ndp, skb); /* Find the handler */ for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) { if (ncsi_rsp_handlers[i].type == hdr->type) { if (ncsi_rsp_handlers[i].handler) nrh = &ncsi_rsp_handlers[i]; else nrh = NULL; break; } } if (!nrh) { netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n", hdr->type); return -ENOENT; } /* Associate with the request */ spin_lock_irqsave(&ndp->lock, flags); nr = &ndp->requests[hdr->id]; if (!nr->used) { spin_unlock_irqrestore(&ndp->lock, flags); return -ENODEV; } nr->rsp = skb; if (!nr->enabled) { spin_unlock_irqrestore(&ndp->lock, flags); ret = -ENOENT; goto out; } /* Validate the packet */ spin_unlock_irqrestore(&ndp->lock, flags); payload = nrh->payload; if (payload < 0) payload = ntohs(hdr->length); ret = ncsi_validate_rsp_pkt(nr, payload); if (ret) goto out; /* Process the packet */ ret = nrh->handler(nr); out: ncsi_free_request(nr); return ret; }

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