/* bnx2fc_fcoe.c: Broadcom NetXtreme II Linux FCoE offload driver. * This file contains the code that interacts with libfc, libfcoe, * cnic modules to create FCoE instances, send/receive non-offloaded * FIP/FCoE packets, listen to link events etc. * * Copyright (c) 2008 - 2011 Broadcom 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: Bhanu Prakash Gollapudi (bprakash@broadcom.com) */ #include "bnx2fc.h" static struct list_head adapter_list; static struct list_head if_list; static u32 adapter_count; static DEFINE_MUTEX(bnx2fc_dev_lock); DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu); #define DRV_MODULE_NAME "bnx2fc" #define DRV_MODULE_VERSION BNX2FC_VERSION #define DRV_MODULE_RELDATE "Jan 22, 2011" static char version[] __devinitdata = "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \ " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; MODULE_AUTHOR("Bhanu Prakash Gollapudi "); MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_MODULE_VERSION); #define BNX2FC_MAX_QUEUE_DEPTH 256 #define BNX2FC_MIN_QUEUE_DEPTH 32 #define FCOE_WORD_TO_BYTE 4 static struct scsi_transport_template *bnx2fc_transport_template; static struct scsi_transport_template *bnx2fc_vport_xport_template; struct workqueue_struct *bnx2fc_wq; /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure. * Here the io threads are per cpu but the l2 thread is just one */ struct fcoe_percpu_s bnx2fc_global; DEFINE_SPINLOCK(bnx2fc_global_lock); static struct cnic_ulp_ops bnx2fc_cnic_cb; static struct libfc_function_template bnx2fc_libfc_fcn_templ; static struct scsi_host_template bnx2fc_shost_template; static struct fc_function_template bnx2fc_transport_function; static struct fc_function_template bnx2fc_vport_xport_function; static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode); static void __bnx2fc_destroy(struct bnx2fc_interface *interface); static int bnx2fc_destroy(struct net_device *net_device); static int bnx2fc_enable(struct net_device *netdev); static int bnx2fc_disable(struct net_device *netdev); static void bnx2fc_recv_frame(struct sk_buff *skb); static void bnx2fc_start_disc(struct bnx2fc_interface *interface); static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev); static int bnx2fc_lport_config(struct fc_lport *lport); static int bnx2fc_em_config(struct fc_lport *lport); static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba); static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba); static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba); static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba); static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, struct device *parent, int npiv); static void bnx2fc_destroy_work(struct work_struct *work); static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev); static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device *phys_dev); static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface); static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic); static int bnx2fc_fw_init(struct bnx2fc_hba *hba); static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba); static void bnx2fc_port_shutdown(struct fc_lport *lport); static void bnx2fc_stop(struct bnx2fc_interface *interface); static int __init bnx2fc_mod_init(void); static void __exit bnx2fc_mod_exit(void); unsigned int bnx2fc_debug_level; module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR); static int bnx2fc_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu); /* notification function for CPU hotplug events */ static struct notifier_block bnx2fc_cpu_notifier = { .notifier_call = bnx2fc_cpu_callback, }; static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport) { return ((struct bnx2fc_interface *) ((struct fcoe_port *)lport_priv(lport))->priv)->netdev; } /** * bnx2fc_get_lesb() - Fill the FCoE Link Error Status Block * @lport: the local port * @fc_lesb: the link error status block */ static void bnx2fc_get_lesb(struct fc_lport *lport, struct fc_els_lesb *fc_lesb) { struct net_device *netdev = bnx2fc_netdev(lport); __fcoe_get_lesb(lport, fc_lesb, netdev); } static void bnx2fc_clean_rx_queue(struct fc_lport *lp) { struct fcoe_percpu_s *bg; struct fcoe_rcv_info *fr; struct sk_buff_head *list; struct sk_buff *skb, *next; struct sk_buff *head; bg = &bnx2fc_global; spin_lock_bh(&bg->fcoe_rx_list.lock); list = &bg->fcoe_rx_list; head = list->next; for (skb = head; skb != (struct sk_buff *)list; skb = next) { next = skb->next; fr = fcoe_dev_from_skb(skb); if (fr->fr_dev == lp) { __skb_unlink(skb, list); kfree_skb(skb); } } spin_unlock_bh(&bg->fcoe_rx_list.lock); } int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen) { int rc; spin_lock(&bnx2fc_global_lock); rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global); spin_unlock(&bnx2fc_global_lock); return rc; } static void bnx2fc_abort_io(struct fc_lport *lport) { /* * This function is no-op for bnx2fc, but we do * not want to leave it as NULL either, as libfc * can call the default function which is * fc_fcp_abort_io. */ } static void bnx2fc_cleanup(struct fc_lport *lport) { struct fcoe_port *port = lport_priv(lport); struct bnx2fc_interface *interface = port->priv; struct bnx2fc_hba *hba = interface->hba; struct bnx2fc_rport *tgt; int i; BNX2FC_MISC_DBG("Entered %s\n", __func__); mutex_lock(&hba->hba_mutex); spin_lock_bh(&hba->hba_lock); for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) { tgt = hba->tgt_ofld_list[i]; if (tgt) { /* Cleanup IOs belonging to requested vport */ if (tgt->port == port) { spin_unlock_bh(&hba->hba_lock); BNX2FC_TGT_DBG(tgt, "flush/cleanup\n"); bnx2fc_flush_active_ios(tgt); spin_lock_bh(&hba->hba_lock); } } } spin_unlock_bh(&hba->hba_lock); mutex_unlock(&hba->hba_mutex); } static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt, struct fc_frame *fp) { struct fc_rport_priv *rdata = tgt->rdata; struct fc_frame_header *fh; int rc = 0; fh = fc_frame_header_get(fp); BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, " "r_ctl = 0x%x\n", rdata->ids.port_id, ntohs(fh->fh_ox_id), fh->fh_r_ctl); if ((fh->fh_type == FC_TYPE_ELS) && (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { switch (fc_frame_payload_op(fp)) { case ELS_ADISC: rc = bnx2fc_send_adisc(tgt, fp); break; case ELS_LOGO: rc = bnx2fc_send_logo(tgt, fp); break; case ELS_RLS: rc = bnx2fc_send_rls(tgt, fp); break; default: break; } } else if ((fh->fh_type == FC_TYPE_BLS) && (fh->fh_r_ctl == FC_RCTL_BA_ABTS)) BNX2FC_TGT_DBG(tgt, "ABTS frame\n"); else { BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x " "rctl 0x%x thru non-offload path\n", fh->fh_type, fh->fh_r_ctl); return -ENODEV; } if (rc) return -ENOMEM; else return 0; } /** * bnx2fc_xmit - bnx2fc's FCoE frame transmit function * * @lport: the associated local port * @fp: the fc_frame to be transmitted */ static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp) { struct ethhdr *eh; struct fcoe_crc_eof *cp; struct sk_buff *skb; struct fc_frame_header *fh; struct bnx2fc_interface *interface; struct bnx2fc_hba *hba; struct fcoe_port *port; struct fcoe_hdr *hp; struct bnx2fc_rport *tgt; struct fcoe_dev_stats *stats; u8 sof, eof; u32 crc; unsigned int hlen, tlen, elen; int wlen, rc = 0; port = (struct fcoe_port *)lport_priv(lport); interface = port->priv; hba = interface->hba; fh = fc_frame_header_get(fp); skb = fp_skb(fp); if (!lport->link_up) { BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n"); kfree_skb(skb); return 0; } if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { if (!interface->ctlr.sel_fcf) { BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n"); kfree_skb(skb); return -EINVAL; } if (fcoe_ctlr_els_send(&interface->ctlr, lport, skb)) return 0; } sof = fr_sof(fp); eof = fr_eof(fp); /* * Snoop the frame header to check if the frame is for * an offloaded session */ /* * tgt_ofld_list access is synchronized using * both hba mutex and hba lock. Atleast hba mutex or * hba lock needs to be held for read access. */ spin_lock_bh(&hba->hba_lock); tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id)); if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) { /* This frame is for offloaded session */ BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session " "port_id = 0x%x\n", ntoh24(fh->fh_d_id)); spin_unlock_bh(&hba->hba_lock); rc = bnx2fc_xmit_l2_frame(tgt, fp); if (rc != -ENODEV) { kfree_skb(skb); return rc; } } else { spin_unlock_bh(&hba->hba_lock); } elen = sizeof(struct ethhdr); hlen = sizeof(struct fcoe_hdr); tlen = sizeof(struct fcoe_crc_eof); wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; skb->ip_summed = CHECKSUM_NONE; crc = fcoe_fc_crc(fp); /* copy port crc and eof to the skb buff */ if (skb_is_nonlinear(skb)) { skb_frag_t *frag; if (bnx2fc_get_paged_crc_eof(skb, tlen)) { kfree_skb(skb); return -ENOMEM; } frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; cp = kmap_atomic(skb_frag_page(frag), KM_SKB_DATA_SOFTIRQ) + frag->page_offset; } else { cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); } memset(cp, 0, sizeof(*cp)); cp->fcoe_eof = eof; cp->fcoe_crc32 = cpu_to_le32(~crc); if (skb_is_nonlinear(skb)) { kunmap_atomic(cp, KM_SKB_DATA_SOFTIRQ); cp = NULL; } /* adjust skb network/transport offsets to match mac/fcoe/port */ skb_push(skb, elen + hlen); skb_reset_mac_header(skb); skb_reset_network_header(skb); skb->mac_len = elen; skb->protocol = htons(ETH_P_FCOE); skb->dev = interface->netdev; /* fill up mac and fcoe headers */ eh = eth_hdr(skb); eh->h_proto = htons(ETH_P_FCOE); if (interface->ctlr.map_dest) fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); else /* insert GW address */ memcpy(eh->h_dest, interface->ctlr.dest_addr, ETH_ALEN); if (unlikely(interface->ctlr.flogi_oxid != FC_XID_UNKNOWN)) memcpy(eh->h_source, interface->ctlr.ctl_src_addr, ETH_ALEN); else memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); hp = (struct fcoe_hdr *)(eh + 1); memset(hp, 0, sizeof(*hp)); if (FC_FCOE_VER) FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); hp->fcoe_sof = sof; /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ if (lport->seq_offload && fr_max_payload(fp)) { skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; skb_shinfo(skb)->gso_size = fr_max_payload(fp); } else { skb_shinfo(skb)->gso_type = 0; skb_shinfo(skb)->gso_size = 0; } /*update tx stats */ stats = per_cpu_ptr(lport->dev_stats, get_cpu()); stats->TxFrames++; stats->TxWords += wlen; put_cpu(); /* send down to lld */ fr_dev(fp) = lport; if (port->fcoe_pending_queue.qlen) fcoe_check_wait_queue(lport, skb); else if (fcoe_start_io(skb)) fcoe_check_wait_queue(lport, skb); return 0; } /** * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ * * @skb: the receive socket buffer * @dev: associated net device * @ptype: context * @olddev: last device * * This function receives the packet and builds FC frame and passes it up */ static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *ptype, struct net_device *olddev) { struct fc_lport *lport; struct bnx2fc_interface *interface; struct fc_frame_header *fh; struct fcoe_rcv_info *fr; struct fcoe_percpu_s *bg; unsigned short oxid; interface = container_of(ptype, struct bnx2fc_interface, fcoe_packet_type); lport = interface->ctlr.lp; if (unlikely(lport == NULL)) { printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n"); goto err; } if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n"); goto err; } /* * Check for minimum frame length, and make sure required FCoE * and FC headers are pulled into the linear data area. */ if (unlikely((skb->len < FCOE_MIN_FRAME) || !pskb_may_pull(skb, FCOE_HEADER_LEN))) goto err; skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); fh = (struct fc_frame_header *) skb_transport_header(skb); oxid = ntohs(fh->fh_ox_id); fr = fcoe_dev_from_skb(skb); fr->fr_dev = lport; bg = &bnx2fc_global; spin_lock_bh(&bg->fcoe_rx_list.lock); __skb_queue_tail(&bg->fcoe_rx_list, skb); if (bg->fcoe_rx_list.qlen == 1) wake_up_process(bg->thread); spin_unlock_bh(&bg->fcoe_rx_list.lock); return 0; err: kfree_skb(skb); return -1; } static int bnx2fc_l2_rcv_thread(void *arg) { struct fcoe_percpu_s *bg = arg; struct sk_buff *skb; set_user_nice(current, -20); set_current_state(TASK_INTERRUPTIBLE); while (!kthread_should_stop()) { schedule(); spin_lock_bh(&bg->fcoe_rx_list.lock); while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { spin_unlock_bh(&bg->fcoe_rx_list.lock); bnx2fc_recv_frame(skb); spin_lock_bh(&bg->fcoe_rx_list.lock); } __set_current_state(TASK_INTERRUPTIBLE); spin_unlock_bh(&bg->fcoe_rx_list.lock); } __set_current_state(TASK_RUNNING); return 0; } static void bnx2fc_recv_frame(struct sk_buff *skb) { u32 fr_len; struct fc_lport *lport; struct fcoe_rcv_info *fr; struct fcoe_dev_stats *stats; struct fc_frame_header *fh; struct fcoe_crc_eof crc_eof; struct fc_frame *fp; struct fc_lport *vn_port; struct fcoe_port *port; u8 *mac = NULL; u8 *dest_mac = NULL; struct fcoe_hdr *hp; fr = fcoe_dev_from_skb(skb); lport = fr->fr_dev; if (unlikely(lport == NULL)) { printk(KERN_ERR PFX "Invalid lport struct\n"); kfree_skb(skb); return; } if (skb_is_nonlinear(skb)) skb_linearize(skb); mac = eth_hdr(skb)->h_source; dest_mac = eth_hdr(skb)->h_dest; /* Pull the header */ hp = (struct fcoe_hdr *) skb_network_header(skb); fh = (struct fc_frame_header *) skb_transport_header(skb); skb_pull(skb, sizeof(struct fcoe_hdr)); fr_len = skb->len - sizeof(struct fcoe_crc_eof); stats = per_cpu_ptr(lport->dev_stats, get_cpu()); stats->RxFrames++; stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; fp = (struct fc_frame *)skb; fc_frame_init(fp); fr_dev(fp) = lport; fr_sof(fp) = hp->fcoe_sof; if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { put_cpu(); kfree_skb(skb); return; } fr_eof(fp) = crc_eof.fcoe_eof; fr_crc(fp) = crc_eof.fcoe_crc32; if (pskb_trim(skb, fr_len)) { put_cpu(); kfree_skb(skb); return; } fh = fc_frame_header_get(fp); vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); if (vn_port) { port = lport_priv(vn_port); if (compare_ether_addr(port->data_src_addr, dest_mac) != 0) { BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); put_cpu(); kfree_skb(skb); return; } } if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && fh->fh_type == FC_TYPE_FCP) { /* Drop FCP data. We dont this in L2 path */ put_cpu(); kfree_skb(skb); return; } if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && fh->fh_type == FC_TYPE_ELS) { switch (fc_frame_payload_op(fp)) { case ELS_LOGO: if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { /* drop non-FIP LOGO */ put_cpu(); kfree_skb(skb); return; } break; } } if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { /* Drop incoming ABTS */ put_cpu(); kfree_skb(skb); return; } if (le32_to_cpu(fr_crc(fp)) != ~crc32(~0, skb->data, fr_len)) { if (stats->InvalidCRCCount < 5) printk(KERN_WARNING PFX "dropping frame with " "CRC error\n"); stats->InvalidCRCCount++; put_cpu(); kfree_skb(skb); return; } put_cpu(); fc_exch_recv(lport, fp); } /** * bnx2fc_percpu_io_thread - thread per cpu for ios * * @arg: ptr to bnx2fc_percpu_info structure */ int bnx2fc_percpu_io_thread(void *arg) { struct bnx2fc_percpu_s *p = arg; struct bnx2fc_work *work, *tmp; LIST_HEAD(work_list); set_user_nice(current, -20); set_current_state(TASK_INTERRUPTIBLE); while (!kthread_should_stop()) { schedule(); spin_lock_bh(&p->fp_work_lock); while (!list_empty(&p->work_list)) { list_splice_init(&p->work_list, &work_list); spin_unlock_bh(&p->fp_work_lock); list_for_each_entry_safe(work, tmp, &work_list, list) { list_del_init(&work->list); bnx2fc_process_cq_compl(work->tgt, work->wqe); kfree(work); } spin_lock_bh(&p->fp_work_lock); } __set_current_state(TASK_INTERRUPTIBLE); spin_unlock_bh(&p->fp_work_lock); } __set_current_state(TASK_RUNNING); return 0; } static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) { struct fc_host_statistics *bnx2fc_stats; struct fc_lport *lport = shost_priv(shost); struct fcoe_port *port = lport_priv(lport); struct bnx2fc_interface *interface = port->priv; struct bnx2fc_hba *hba = interface->hba; struct fcoe_statistics_params *fw_stats; int rc = 0; fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; if (!fw_stats) return NULL; bnx2fc_stats = fc_get_host_stats(shost); init_completion(&hba->stat_req_done); if (bnx2fc_send_stat_req(hba)) return bnx2fc_stats; rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); if (!rc) { BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); return bnx2fc_stats; } bnx2fc_stats->invalid_crc_count += fw_stats->rx_stat2.fc_crc_cnt; bnx2fc_stats->tx_frames += fw_stats->tx_stat.fcoe_tx_pkt_cnt; bnx2fc_stats->tx_words += (fw_stats->tx_stat.fcoe_tx_byte_cnt) / 4; bnx2fc_stats->rx_frames += fw_stats->rx_stat0.fcoe_rx_pkt_cnt; bnx2fc_stats->rx_words += (fw_stats->rx_stat0.fcoe_rx_byte_cnt) / 4; bnx2fc_stats->dumped_frames = 0; bnx2fc_stats->lip_count = 0; bnx2fc_stats->nos_count = 0; bnx2fc_stats->loss_of_sync_count = 0; bnx2fc_stats->loss_of_signal_count = 0; bnx2fc_stats->prim_seq_protocol_err_count = 0; return bnx2fc_stats; } static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) { struct fcoe_port *port = lport_priv(lport); struct bnx2fc_interface *interface = port->priv; struct Scsi_Host *shost = lport->host; int rc = 0; shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; shost->max_lun = BNX2FC_MAX_LUN; shost->max_id = BNX2FC_MAX_FCP_TGT; shost->max_channel = 0; if (lport->vport) shost->transportt = bnx2fc_vport_xport_template; else shost->transportt = bnx2fc_transport_template; /* Add the new host to SCSI-ml */ rc = scsi_add_host(lport->host, dev); if (rc) { printk(KERN_ERR PFX "Error on scsi_add_host\n"); return rc; } if (!lport->vport) fc_host_max_npiv_vports(lport->host) = USHRT_MAX; sprintf(fc_host_symbolic_name(lport->host), "%s v%s over %s", BNX2FC_NAME, BNX2FC_VERSION, interface->netdev->name); return 0; } static void bnx2fc_link_speed_update(struct fc_lport *lport) { struct fcoe_port *port = lport_priv(lport); struct bnx2fc_interface *interface = port->priv; struct net_device *netdev = interface->netdev; struct ethtool_cmd ecmd; if (!__ethtool_get_settings(netdev, &ecmd)) { lport->link_supported_speeds &= ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT); if (ecmd.supported & (SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)) lport->link_supported_speeds |= FC_PORTSPEED_1GBIT; if (ecmd.supported & SUPPORTED_10000baseT_Full) lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; switch (ethtool_cmd_speed(&ecmd)) { case SPEED_1000: lport->link_speed = FC_PORTSPEED_1GBIT; break; case SPEED_2500: lport->link_speed = FC_PORTSPEED_2GBIT; break; case SPEED_10000: lport->link_speed = FC_PORTSPEED_10GBIT; break; } } } static int bnx2fc_link_ok(struct fc_lport *lport) { struct fcoe_port *port = lport_priv(lport); struct bnx2fc_interface *interface = port->priv; struct bnx2fc_hba *hba = interface->hba; struct net_device *dev = hba->phys_dev; int rc = 0; if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); else { set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); rc = -1; } return rc; } /** * bnx2fc_get_link_state - get network link state * * @hba: adapter instance pointer * * updates adapter structure flag based on netdev state */ void bnx2fc_get_link_state(struct bnx2fc_hba *hba) { if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); else clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); } static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) { struct bnx2fc_hba *hba; struct bnx2fc_interface *interface; struct fcoe_port *port; u64 wwnn, wwpn; port = lport_priv(lport); interface = port->priv; hba = interface->hba; /* require support for get_pauseparam ethtool op. */ if (!hba->phys_dev->ethtool_ops || !hba->phys_dev->ethtool_ops->get_pauseparam) return -EOPNOTSUPP; if (fc_set_mfs(lport, BNX2FC_MFS)) return -EINVAL; skb_queue_head_init(&port->fcoe_pending_queue); port->fcoe_pending_queue_active = 0; setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport); bnx2fc_link_speed_update(lport); if (!lport->vport) { if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) wwnn = fcoe_wwn_from_mac(interface->ctlr.ctl_src_addr, 1, 0); BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); fc_set_wwnn(lport, wwnn); if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) wwpn = fcoe_wwn_from_mac(interface->ctlr.ctl_src_addr, 2, 0); BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); fc_set_wwpn(lport, wwpn); } return 0; } static void bnx2fc_destroy_timer(unsigned long data) { struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data; printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " "Destroy compl not received!!\n"); set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); wake_up_interruptible(&hba->destroy_wait); } /** * bnx2fc_indicate_netevent - Generic netdev event handler * * @context: adapter structure pointer * @event: event type * @vlan_id: vlan id - associated vlan id with this event * * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. */ static void bnx2fc_indicate_netevent(void *context, unsigned long event, u16 vlan_id) { struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; struct fc_lport *lport; struct fc_lport *vport; struct bnx2fc_interface *interface, *tmp; int wait_for_upload = 0; u32 link_possible = 1; if (vlan_id != 0 && event != NETDEV_UNREGISTER) return; switch (event) { case NETDEV_UP: if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) printk(KERN_ERR "indicate_netevent: "\ "hba is not UP!!\n"); break; case NETDEV_DOWN: clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); link_possible = 0; break; case NETDEV_GOING_DOWN: set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); link_possible = 0; break; case NETDEV_CHANGE: break; case NETDEV_UNREGISTER: if (!vlan_id) return; mutex_lock(&bnx2fc_dev_lock); list_for_each_entry_safe(interface, tmp, &if_list, list) { if (interface->hba == hba && interface->vlan_id == (vlan_id & VLAN_VID_MASK)) __bnx2fc_destroy(interface); } mutex_unlock(&bnx2fc_dev_lock); return; default: printk(KERN_ERR PFX "Unkonwn netevent %ld", event); return; } mutex_lock(&bnx2fc_dev_lock); list_for_each_entry(interface, &if_list, list) { if (interface->hba != hba) continue; lport = interface->ctlr.lp; BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", interface->netdev->name, event); bnx2fc_link_speed_update(lport); if (link_possible && !bnx2fc_link_ok(lport)) { /* Reset max recv frame size to default */ fc_set_mfs(lport, BNX2FC_MFS); /* * ctlr link up will only be handled during * enable to avoid sending discovery solicitation * on a stale vlan */ if (interface->enabled) fcoe_ctlr_link_up(&interface->ctlr); } else if (fcoe_ctlr_link_down(&interface->ctlr)) { mutex_lock(&lport->lp_mutex); list_for_each_entry(vport, &lport->vports, list) fc_host_port_type(vport->host) = FC_PORTTYPE_UNKNOWN; mutex_unlock(&lport->lp_mutex); fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; per_cpu_ptr(lport->dev_stats, get_cpu())->LinkFailureCount++; put_cpu(); fcoe_clean_pending_queue(lport); wait_for_upload = 1; } } mutex_unlock(&bnx2fc_dev_lock); if (wait_for_upload) { clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); init_waitqueue_head(&hba->shutdown_wait); BNX2FC_MISC_DBG("indicate_netevent " "num_ofld_sess = %d\n", hba->num_ofld_sess); hba->wait_for_link_down = 1; wait_event_interruptible(hba->shutdown_wait, (hba->num_ofld_sess == 0)); BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", hba->num_ofld_sess); hba->wait_for_link_down = 0; if (signal_pending(current)) flush_signals(current); } } static int bnx2fc_libfc_config(struct fc_lport *lport) { /* Set the function pointers set by bnx2fc driver */ memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, sizeof(struct libfc_function_template)); fc_elsct_init(lport); fc_exch_init(lport); fc_rport_init(lport); fc_disc_init(lport); return 0; } static int bnx2fc_em_config(struct fc_lport *lport) { int max_xid; if (nr_cpu_ids <= 2) max_xid = FCOE_XIDS_PER_CPU; else max_xid = FCOE_MAX_XID; if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID, max_xid, NULL)) { printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); return -ENOMEM; } return 0; } static int bnx2fc_lport_config(struct fc_lport *lport) { lport->link_up = 0; lport->qfull = 0; lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; lport->e_d_tov = 2 * 1000; lport->r_a_tov = 10 * 1000; lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); lport->does_npiv = 1; memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; /* alloc stats structure */ if (fc_lport_init_stats(lport)) return -ENOMEM; /* Finish fc_lport configuration */ fc_lport_config(lport); return 0; } /** * bnx2fc_fip_recv - handle a received FIP frame. * * @skb: the received skb * @dev: associated &net_device * @ptype: the &packet_type structure which was used to register this handler. * @orig_dev: original receive &net_device, in case @ dev is a bond. * * Returns: 0 for success */ static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type *ptype, struct net_device *orig_dev) { struct bnx2fc_interface *interface; interface = container_of(ptype, struct bnx2fc_interface, fip_packet_type); fcoe_ctlr_recv(&interface->ctlr, skb); return 0; } /** * bnx2fc_update_src_mac - Update Ethernet MAC filters. * * @fip: FCoE controller. * @old: Unicast MAC address to delete if the MAC is non-zero. * @new: Unicast MAC address to add. * * Remove any previously-set unicast MAC filter. * Add secondary FCoE MAC address filter for our OUI. */ static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) { struct fcoe_port *port = lport_priv(lport); memcpy(port->data_src_addr, addr, ETH_ALEN); } /** * bnx2fc_get_src_mac - return the ethernet source address for an lport * * @lport: libfc port */ static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) { struct fcoe_port *port; port = (struct fcoe_port *)lport_priv(lport); return port->data_src_addr; } /** * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. * * @fip: FCoE controller. * @skb: FIP Packet. */ static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) { skb->dev = bnx2fc_from_ctlr(fip)->netdev; dev_queue_xmit(skb); } static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) { struct Scsi_Host *shost = vport_to_shost(vport); struct fc_lport *n_port = shost_priv(shost); struct fcoe_port *port = lport_priv(n_port); struct bnx2fc_interface *interface = port->priv; struct net_device *netdev = interface->netdev; struct fc_lport *vn_port; int rc; char buf[32]; rc = fcoe_validate_vport_create(vport); if (rc) { fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); printk(KERN_ERR PFX "Failed to create vport, " "WWPN (0x%s) already exists\n", buf); return rc; } if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { printk(KERN_ERR PFX "vn ports cannot be created on" "this interface\n"); return -EIO; } rtnl_lock(); mutex_lock(&bnx2fc_dev_lock); vn_port = bnx2fc_if_create(interface, &vport->dev, 1); mutex_unlock(&bnx2fc_dev_lock); rtnl_unlock(); if (IS_ERR(vn_port)) { printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", netdev->name); return -EIO; } if (disabled) { fc_vport_set_state(vport, FC_VPORT_DISABLED); } else { vn_port->boot_time = jiffies; fc_lport_init(vn_port); fc_fabric_login(vn_port); fc_vport_setlink(vn_port); } return 0; } static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) { struct bnx2fc_lport *blport, *tmp; spin_lock_bh(&hba->hba_lock); list_for_each_entry_safe(blport, tmp, &hba->vports, list) { if (blport->lport == lport) { list_del(&blport->list); kfree(blport); } } spin_unlock_bh(&hba->hba_lock); } static int bnx2fc_vport_destroy(struct fc_vport *vport) { struct Scsi_Host *shost = vport_to_shost(vport); struct fc_lport *n_port = shost_priv(shost); struct fc_lport *vn_port = vport->dd_data; struct fcoe_port *port = lport_priv(vn_port); struct bnx2fc_interface *interface = port->priv; struct fc_lport *v_port; bool found = false; mutex_lock(&n_port->lp_mutex); list_for_each_entry(v_port, &n_port->vports, list) if (v_port->vport == vport) { found = true; break; } if (!found) { mutex_unlock(&n_port->lp_mutex); return -ENOENT; } list_del(&vn_port->list); mutex_unlock(&n_port->lp_mutex); bnx2fc_free_vport(interface->hba, port->lport); bnx2fc_port_shutdown(port->lport); bnx2fc_interface_put(interface); queue_work(bnx2fc_wq, &port->destroy_work); return 0; } static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) { struct fc_lport *lport = vport->dd_data; if (disable) { fc_vport_set_state(vport, FC_VPORT_DISABLED); fc_fabric_logoff(lport); } else { lport->boot_time = jiffies; fc_fabric_login(lport); fc_vport_setlink(lport); } return 0; } static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) { struct net_device *netdev = interface->netdev; struct net_device *physdev = interface->hba->phys_dev; struct netdev_hw_addr *ha; int sel_san_mac = 0; /* setup Source MAC Address */ rcu_read_lock(); for_each_dev_addr(physdev, ha) { BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", ha->type); printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], ha->addr[1], ha->addr[2], ha->addr[3], ha->addr[4], ha->addr[5]); if ((ha->type == NETDEV_HW_ADDR_T_SAN) && (is_valid_ether_addr(ha->addr))) { memcpy(interface->ctlr.ctl_src_addr, ha->addr, ETH_ALEN); sel_san_mac = 1; BNX2FC_MISC_DBG("Found SAN MAC\n"); } } rcu_read_unlock(); if (!sel_san_mac) return -ENODEV; interface->fip_packet_type.func = bnx2fc_fip_recv; interface->fip_packet_type.type = htons(ETH_P_FIP); interface->fip_packet_type.dev = netdev; dev_add_pack(&interface->fip_packet_type); interface->fcoe_packet_type.func = bnx2fc_rcv; interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); interface->fcoe_packet_type.dev = netdev; dev_add_pack(&interface->fcoe_packet_type); return 0; } static int bnx2fc_attach_transport(void) { bnx2fc_transport_template = fc_attach_transport(&bnx2fc_transport_function); if (bnx2fc_transport_template == NULL) { printk(KERN_ERR PFX "Failed to attach FC transport\n"); return -ENODEV; } bnx2fc_vport_xport_template = fc_attach_transport(&bnx2fc_vport_xport_function); if (bnx2fc_vport_xport_template == NULL) { printk(KERN_ERR PFX "Failed to attach FC transport for vport\n"); fc_release_transport(bnx2fc_transport_template); bnx2fc_transport_template = NULL; return -ENODEV; } return 0; } static void bnx2fc_release_transport(void) { fc_release_transport(bnx2fc_transport_template); fc_release_transport(bnx2fc_vport_xport_template); bnx2fc_transport_template = NULL; bnx2fc_vport_xport_template = NULL; } static void bnx2fc_interface_release(struct kref *kref) { struct bnx2fc_interface *interface; struct net_device *netdev; interface = container_of(kref, struct bnx2fc_interface, kref); BNX2FC_MISC_DBG("Interface is being released\n"); netdev = interface->netdev; /* tear-down FIP controller */ if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) fcoe_ctlr_destroy(&interface->ctlr); kfree(interface); dev_put(netdev); module_put(THIS_MODULE); } static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) { kref_get(&interface->kref); } static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) { kref_put(&interface->kref, bnx2fc_interface_release); } static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) { /* Free the command manager */ if (hba->cmd_mgr) { bnx2fc_cmd_mgr_free(hba->cmd_mgr); hba->cmd_mgr = NULL; } kfree(hba->tgt_ofld_list); bnx2fc_unbind_pcidev(hba); kfree(hba); } /** * bnx2fc_hba_create - create a new bnx2fc hba * * @cnic: pointer to cnic device * * Creates a new FCoE hba on the given device. * */ static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) { struct bnx2fc_hba *hba; int rc; hba = kzalloc(sizeof(*hba), GFP_KERNEL); if (!hba) { printk(KERN_ERR PFX "Unable to allocate hba structure\n"); return NULL; } spin_lock_init(&hba->hba_lock); mutex_init(&hba->hba_mutex); hba->cnic = cnic; rc = bnx2fc_bind_pcidev(hba); if (rc) { printk(KERN_ERR PFX "create_adapter: bind error\n"); goto bind_err; } hba->phys_dev = cnic->netdev; hba->next_conn_id = 0; hba->tgt_ofld_list = kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS, GFP_KERNEL); if (!hba->tgt_ofld_list) { printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); goto tgtofld_err; } hba->num_ofld_sess = 0; hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID, BNX2FC_MAX_XID); if (!hba->cmd_mgr) { printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); goto cmgr_err; } init_waitqueue_head(&hba->shutdown_wait); init_waitqueue_head(&hba->destroy_wait); INIT_LIST_HEAD(&hba->vports); return hba; cmgr_err: kfree(hba->tgt_ofld_list); tgtofld_err: bnx2fc_unbind_pcidev(hba); bind_err: kfree(hba); return NULL; } struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba, struct net_device *netdev, enum fip_state fip_mode) { struct bnx2fc_interface *interface; int rc = 0; interface = kzalloc(sizeof(*interface), GFP_KERNEL); if (!interface) { printk(KERN_ERR PFX "Unable to allocate interface structure\n"); return NULL; } dev_hold(netdev); kref_init(&interface->kref); interface->hba = hba; interface->netdev = netdev; /* Initialize FIP */ fcoe_ctlr_init(&interface->ctlr, fip_mode); interface->ctlr.send = bnx2fc_fip_send; interface->ctlr.update_mac = bnx2fc_update_src_mac; interface->ctlr.get_src_addr = bnx2fc_get_src_mac; set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); rc = bnx2fc_interface_setup(interface); if (!rc) return interface; fcoe_ctlr_destroy(&interface->ctlr); dev_put(netdev); kfree(interface); return NULL; } /** * bnx2fc_if_create - Create FCoE instance on a given interface * * @interface: FCoE interface to create a local port on * @parent: Device pointer to be the parent in sysfs for the SCSI host * @npiv: Indicates if the port is vport or not * * Creates a fc_lport instance and a Scsi_Host instance and configure them. * * Returns: Allocated fc_lport or an error pointer */ static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, struct device *parent, int npiv) { struct fc_lport *lport, *n_port; struct fcoe_port *port; struct Scsi_Host *shost; struct fc_vport *vport = dev_to_vport(parent); struct bnx2fc_lport *blport; struct bnx2fc_hba *hba; int rc = 0; blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); if (!blport) { BNX2FC_HBA_DBG(interface->ctlr.lp, "Unable to alloc blport\n"); return NULL; } /* Allocate Scsi_Host structure */ if (!npiv) lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); else lport = libfc_vport_create(vport, sizeof(*port)); if (!lport) { printk(KERN_ERR PFX "could not allocate scsi host structure\n"); goto free_blport; } shost = lport->host; port = lport_priv(lport); port->lport = lport; port->priv = interface; INIT_WORK(&port->destroy_work, bnx2fc_destroy_work); /* Configure fcoe_port */ rc = bnx2fc_lport_config(lport); if (rc) goto lp_config_err; if (npiv) { printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", vport->node_name, vport->port_name); fc_set_wwnn(lport, vport->node_name); fc_set_wwpn(lport, vport->port_name); } /* Configure netdev and networking properties of the lport */ rc = bnx2fc_net_config(lport, interface->netdev); if (rc) { printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); goto lp_config_err; } rc = bnx2fc_shost_config(lport, parent); if (rc) { printk(KERN_ERR PFX "Couldnt configure shost for %s\n", interface->netdev->name); goto lp_config_err; } /* Initialize the libfc library */ rc = bnx2fc_libfc_config(lport); if (rc) { printk(KERN_ERR PFX "Couldnt configure libfc\n"); goto shost_err; } fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; /* Allocate exchange manager */ if (!npiv) rc = bnx2fc_em_config(lport); else { shost = vport_to_shost(vport); n_port = shost_priv(shost); rc = fc_exch_mgr_list_clone(n_port, lport); } if (rc) { printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); goto shost_err; } bnx2fc_interface_get(interface); hba = interface->hba; spin_lock_bh(&hba->hba_lock); blport->lport = lport; list_add_tail(&blport->list, &hba->vports); spin_unlock_bh(&hba->hba_lock); return lport; shost_err: scsi_remove_host(shost); lp_config_err: scsi_host_put(lport->host); free_blport: kfree(blport); return NULL; } static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) { /* Dont listen for Ethernet packets anymore */ __dev_remove_pack(&interface->fcoe_packet_type); __dev_remove_pack(&interface->fip_packet_type); synchronize_net(); } static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) { struct fc_lport *lport = interface->ctlr.lp; struct fcoe_port *port = lport_priv(lport); struct bnx2fc_hba *hba = interface->hba; /* Stop the transmit retry timer */ del_timer_sync(&port->timer); /* Free existing transmit skbs */ fcoe_clean_pending_queue(lport); bnx2fc_net_cleanup(interface); bnx2fc_free_vport(hba, lport); } static void bnx2fc_if_destroy(struct fc_lport *lport) { /* Free queued packets for the receive thread */ bnx2fc_clean_rx_queue(lport); /* Detach from scsi-ml */ fc_remove_host(lport->host); scsi_remove_host(lport->host); /* * Note that only the physical lport will have the exchange manager. * for vports, this function is NOP */ fc_exch_mgr_free(lport); /* Free memory used by statistical counters */ fc_lport_free_stats(lport); /* Release Scsi_Host */ scsi_host_put(lport->host); } static void __bnx2fc_destroy(struct bnx2fc_interface *interface) { struct fc_lport *lport = interface->ctlr.lp; struct fcoe_port *port = lport_priv(lport); bnx2fc_interface_cleanup(interface); bnx2fc_stop(interface); list_del(&interface->list); bnx2fc_interface_put(interface); queue_work(bnx2fc_wq, &port->destroy_work); } /** * bnx2fc_destroy - Destroy a bnx2fc FCoE interface * * @buffer: The name of the Ethernet interface to be destroyed * @kp: The associated kernel parameter * * Called from sysfs. * * Returns: 0 for success */ static int bnx2fc_destroy(struct net_device *netdev) { struct bnx2fc_interface *interface = NULL; struct workqueue_struct *timer_work_queue; int rc = 0; rtnl_lock(); mutex_lock(&bnx2fc_dev_lock); interface = bnx2fc_interface_lookup(netdev); if (!interface || !interface->ctlr.lp) { rc = -ENODEV; printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); goto netdev_err; } timer_work_queue = interface->timer_work_queue; __bnx2fc_destroy(interface); destroy_workqueue(timer_work_queue); netdev_err: mutex_unlock(&bnx2fc_dev_lock); rtnl_unlock(); return rc; } static void bnx2fc_destroy_work(struct work_struct *work) { struct fcoe_port *port; struct fc_lport *lport; port = container_of(work, struct fcoe_port, destroy_work); lport = port->lport; BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n"); bnx2fc_if_destroy(lport); } static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) { bnx2fc_free_fw_resc(hba); bnx2fc_free_task_ctx(hba); } /** * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated * pci structure * * @hba: Adapter instance */ static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) { if (bnx2fc_setup_task_ctx(hba)) goto mem_err; if (bnx2fc_setup_fw_resc(hba)) goto mem_err; return 0; mem_err: bnx2fc_unbind_adapter_devices(hba); return -ENOMEM; } static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) { struct cnic_dev *cnic; if (!hba->cnic) { printk(KERN_ERR PFX "cnic is NULL\n"); return -ENODEV; } cnic = hba->cnic; hba->pcidev = cnic->pcidev; if (hba->pcidev) pci_dev_get(hba->pcidev); return 0; } static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) { if (hba->pcidev) pci_dev_put(hba->pcidev); hba->pcidev = NULL; } /** * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance * * @handle: transport handle pointing to adapter struture * * This function maps adapter structure to pcidev structure and initiates * firmware handshake to enable/initialize on-chip FCoE components. * This bnx2fc - cnic interface api callback is used after following * conditions are met - * a) underlying network interface is up (marked by event NETDEV_UP * from netdev * b) bnx2fc adatper structure is registered. */ static void bnx2fc_ulp_start(void *handle) { struct bnx2fc_hba *hba = handle; struct bnx2fc_interface *interface; struct fc_lport *lport; mutex_lock(&bnx2fc_dev_lock); if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) bnx2fc_fw_init(hba); BNX2FC_MISC_DBG("bnx2fc started.\n"); list_for_each_entry(interface, &if_list, list) { if (interface->hba == hba) { lport = interface->ctlr.lp; /* Kick off Fabric discovery*/ printk(KERN_ERR PFX "ulp_init: start discovery\n"); lport->tt.frame_send = bnx2fc_xmit; bnx2fc_start_disc(interface); } } mutex_unlock(&bnx2fc_dev_lock); } static void bnx2fc_port_shutdown(struct fc_lport *lport) { BNX2FC_MISC_DBG("Entered %s\n", __func__); fc_fabric_logoff(lport); fc_lport_destroy(lport); } static void bnx2fc_stop(struct bnx2fc_interface *interface) { struct fc_lport *lport; struct fc_lport *vport; if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) return; lport = interface->ctlr.lp; bnx2fc_port_shutdown(lport); mutex_lock(&lport->lp_mutex); list_for_each_entry(vport, &lport->vports, list) fc_host_port_type(vport->host) = FC_PORTTYPE_UNKNOWN; mutex_unlock(&lport->lp_mutex); fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; fcoe_ctlr_link_down(&interface->ctlr); fcoe_clean_pending_queue(lport); } static int bnx2fc_fw_init(struct bnx2fc_hba *hba) { #define BNX2FC_INIT_POLL_TIME (1000 / HZ) int rc = -1; int i = HZ; rc = bnx2fc_bind_adapter_devices(hba); if (rc) { printk(KERN_ALERT PFX "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); goto err_out; } rc = bnx2fc_send_fw_fcoe_init_msg(hba); if (rc) { printk(KERN_ALERT PFX "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); goto err_unbind; } /* * Wait until the adapter init message is complete, and adapter * state is UP. */ while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) msleep(BNX2FC_INIT_POLL_TIME); if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " "Ignoring...\n", hba->cnic->netdev->name); rc = -1; goto err_unbind; } set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); return 0; err_unbind: bnx2fc_unbind_adapter_devices(hba); err_out: return rc; } static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) { if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { init_timer(&hba->destroy_timer); hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + jiffies; hba->destroy_timer.function = bnx2fc_destroy_timer; hba->destroy_timer.data = (unsigned long)hba; add_timer(&hba->destroy_timer); wait_event_interruptible(hba->destroy_wait, test_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags)); clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); /* This should never happen */ if (signal_pending(current)) flush_signals(current); del_timer_sync(&hba->destroy_timer); } bnx2fc_unbind_adapter_devices(hba); } } /** * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance * * @handle: transport handle pointing to adapter structure * * Driver checks if adapter is already in shutdown mode, if not start * the shutdown process. */ static void bnx2fc_ulp_stop(void *handle) { struct bnx2fc_hba *hba = handle; struct bnx2fc_interface *interface; printk(KERN_ERR "ULP_STOP\n"); mutex_lock(&bnx2fc_dev_lock); if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) goto exit; list_for_each_entry(interface, &if_list, list) { if (interface->hba == hba) bnx2fc_stop(interface); } BUG_ON(hba->num_ofld_sess != 0); mutex_lock(&hba->hba_mutex); clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); mutex_unlock(&hba->hba_mutex); bnx2fc_fw_destroy(hba); exit: mutex_unlock(&bnx2fc_dev_lock); } static void bnx2fc_start_disc(struct bnx2fc_interface *interface) { struct fc_lport *lport; int wait_cnt = 0; BNX2FC_MISC_DBG("Entered %s\n", __func__); /* Kick off FIP/FLOGI */ if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { printk(KERN_ERR PFX "Init not done yet\n"); return; } lport = interface->ctlr.lp; BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); if (!bnx2fc_link_ok(lport) && interface->enabled) { BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); fcoe_ctlr_link_up(&interface->ctlr); fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); } /* wait for the FCF to be selected before issuing FLOGI */ while (!interface->ctlr.sel_fcf) { msleep(250); /* give up after 3 secs */ if (++wait_cnt > 12) break; } /* Reset max receive frame size to default */ if (fc_set_mfs(lport, BNX2FC_MFS)) return; fc_lport_init(lport); fc_fabric_login(lport); } /** * bnx2fc_ulp_init - Initialize an adapter instance * * @dev : cnic device handle * Called from cnic_register_driver() context to initialize all * enumerated cnic devices. This routine allocates adapter structure * and other device specific resources. */ static void bnx2fc_ulp_init(struct cnic_dev *dev) { struct bnx2fc_hba *hba; int rc = 0; BNX2FC_MISC_DBG("Entered %s\n", __func__); /* bnx2fc works only when bnx2x is loaded */ if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || (dev->max_fcoe_conn == 0)) { printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," " flags: %lx fcoe_conn: %d\n", dev->netdev->name, dev->flags, dev->max_fcoe_conn); return; } hba = bnx2fc_hba_create(dev); if (!hba) { printk(KERN_ERR PFX "hba initialization failed\n"); return; } /* Add HBA to the adapter list */ mutex_lock(&bnx2fc_dev_lock); list_add_tail(&hba->list, &adapter_list); adapter_count++; mutex_unlock(&bnx2fc_dev_lock); clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); rc = dev->register_device(dev, CNIC_ULP_FCOE, (void *) hba); if (rc) printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); else set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); } static int bnx2fc_disable(struct net_device *netdev) { struct bnx2fc_interface *interface; int rc = 0; rtnl_lock(); mutex_lock(&bnx2fc_dev_lock); interface = bnx2fc_interface_lookup(netdev); if (!interface || !interface->ctlr.lp) { rc = -ENODEV; printk(KERN_ERR PFX "bnx2fc_disable: interface or lport not found\n"); } else { interface->enabled = false; fcoe_ctlr_link_down(&interface->ctlr); fcoe_clean_pending_queue(interface->ctlr.lp); } mutex_unlock(&bnx2fc_dev_lock); rtnl_unlock(); return rc; } static int bnx2fc_enable(struct net_device *netdev) { struct bnx2fc_interface *interface; int rc = 0; rtnl_lock(); mutex_lock(&bnx2fc_dev_lock); interface = bnx2fc_interface_lookup(netdev); if (!interface || !interface->ctlr.lp) { rc = -ENODEV; printk(KERN_ERR PFX "bnx2fc_enable: interface or lport not found\n"); } else if (!bnx2fc_link_ok(interface->ctlr.lp)) { fcoe_ctlr_link_up(&interface->ctlr); interface->enabled = true; } mutex_unlock(&bnx2fc_dev_lock); rtnl_unlock(); return rc; } /** * bnx2fc_create - Create bnx2fc FCoE interface * * @buffer: The name of Ethernet interface to create on * @kp: The associated kernel param * * Called from sysfs. * * Returns: 0 for success */ static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode) { struct bnx2fc_interface *interface; struct bnx2fc_hba *hba; struct net_device *phys_dev; struct fc_lport *lport; struct ethtool_drvinfo drvinfo; int rc = 0; int vlan_id; BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); if (fip_mode != FIP_MODE_FABRIC) { printk(KERN_ERR "fip mode not FABRIC\n"); return -EIO; } rtnl_lock(); mutex_lock(&bnx2fc_dev_lock); if (!try_module_get(THIS_MODULE)) { rc = -EINVAL; goto mod_err; } /* obtain physical netdev */ if (netdev->priv_flags & IFF_802_1Q_VLAN) { phys_dev = vlan_dev_real_dev(netdev); vlan_id = vlan_dev_vlan_id(netdev); } else { printk(KERN_ERR PFX "Not a vlan device\n"); rc = -EINVAL; goto netdev_err; } /* verify if the physical device is a netxtreme2 device */ if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { memset(&drvinfo, 0, sizeof(drvinfo)); phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { printk(KERN_ERR PFX "Not a netxtreme2 device\n"); rc = -EINVAL; goto netdev_err; } } else { printk(KERN_ERR PFX "unable to obtain drv_info\n"); rc = -EINVAL; goto netdev_err; } /* obtain interface and initialize rest of the structure */ hba = bnx2fc_hba_lookup(phys_dev); if (!hba) { rc = -ENODEV; printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); goto netdev_err; } if (bnx2fc_interface_lookup(netdev)) { rc = -EEXIST; goto netdev_err; } interface = bnx2fc_interface_create(hba, netdev, fip_mode); if (!interface) { printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); goto ifput_err; } interface->vlan_id = vlan_id; interface->vlan_enabled = 1; interface->timer_work_queue = create_singlethread_workqueue("bnx2fc_timer_wq"); if (!interface->timer_work_queue) { printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); rc = -EINVAL; goto ifput_err; } lport = bnx2fc_if_create(interface, &interface->hba->pcidev->dev, 0); if (!lport) { printk(KERN_ERR PFX "Failed to create interface (%s)\n", netdev->name); rc = -EINVAL; goto if_create_err; } /* Add interface to if_list */ list_add_tail(&interface->list, &if_list); lport->boot_time = jiffies; /* Make this master N_port */ interface->ctlr.lp = lport; if (!bnx2fc_link_ok(lport)) { fcoe_ctlr_link_up(&interface->ctlr); fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); } BNX2FC_HBA_DBG(lport, "create: START DISC\n"); bnx2fc_start_disc(interface); interface->enabled = true; /* * Release from kref_init in bnx2fc_interface_setup, on success * lport should be holding a reference taken in bnx2fc_if_create */ bnx2fc_interface_put(interface); /* put netdev that was held while calling dev_get_by_name */ mutex_unlock(&bnx2fc_dev_lock); rtnl_unlock(); return 0; if_create_err: destroy_workqueue(interface->timer_work_queue); ifput_err: bnx2fc_net_cleanup(interface); bnx2fc_interface_put(interface); goto mod_err; netdev_err: module_put(THIS_MODULE); mod_err: mutex_unlock(&bnx2fc_dev_lock); rtnl_unlock(); return rc; } /** * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance * * @cnic: Pointer to cnic device instance * **/ static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) { struct list_head *list; struct list_head *temp; struct bnx2fc_hba *hba; /* Called with bnx2fc_dev_lock held */ list_for_each_safe(list, temp, &adapter_list) { hba = (struct bnx2fc_hba *)list; if (hba->cnic == cnic) return hba; } return NULL; } static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device *netdev) { struct bnx2fc_interface *interface; /* Called with bnx2fc_dev_lock held */ list_for_each_entry(interface, &if_list, list) { if (interface->netdev == netdev) return interface; } return NULL; } static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev) { struct bnx2fc_hba *hba; /* Called with bnx2fc_dev_lock held */ list_for_each_entry(hba, &adapter_list, list) { if (hba->phys_dev == phys_dev) return hba; } printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); return NULL; } /** * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources * * @dev cnic device handle */ static void bnx2fc_ulp_exit(struct cnic_dev *dev) { struct bnx2fc_hba *hba; struct bnx2fc_interface *interface, *tmp; BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", dev->netdev->name, dev->flags); return; } mutex_lock(&bnx2fc_dev_lock); hba = bnx2fc_find_hba_for_cnic(dev); if (!hba) { printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", dev); mutex_unlock(&bnx2fc_dev_lock); return; } list_del_init(&hba->list); adapter_count--; list_for_each_entry_safe(interface, tmp, &if_list, list) /* destroy not called yet, move to quiesced list */ if (interface->hba == hba) __bnx2fc_destroy(interface); mutex_unlock(&bnx2fc_dev_lock); bnx2fc_ulp_stop(hba); /* unregister cnic device */ if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); bnx2fc_hba_destroy(hba); } /** * bnx2fc_fcoe_reset - Resets the fcoe * * @shost: shost the reset is from * * Returns: always 0 */ static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) { struct fc_lport *lport = shost_priv(shost); fc_lport_reset(lport); return 0; } static bool bnx2fc_match(struct net_device *netdev) { mutex_lock(&bnx2fc_dev_lock); if (netdev->priv_flags & IFF_802_1Q_VLAN) { struct net_device *phys_dev = vlan_dev_real_dev(netdev); if (bnx2fc_hba_lookup(phys_dev)) { mutex_unlock(&bnx2fc_dev_lock); return true; } } mutex_unlock(&bnx2fc_dev_lock); return false; } static struct fcoe_transport bnx2fc_transport = { .name = {"bnx2fc"}, .attached = false, .list = LIST_HEAD_INIT(bnx2fc_transport.list), .match = bnx2fc_match, .create = bnx2fc_create, .destroy = bnx2fc_destroy, .enable = bnx2fc_enable, .disable = bnx2fc_disable, }; /** * bnx2fc_percpu_thread_create - Create a receive thread for an * online CPU * * @cpu: cpu index for the online cpu */ static void bnx2fc_percpu_thread_create(unsigned int cpu) { struct bnx2fc_percpu_s *p; struct task_struct *thread; p = &per_cpu(bnx2fc_percpu, cpu); thread = kthread_create(bnx2fc_percpu_io_thread, (void *)p, "bnx2fc_thread/%d", cpu); /* bind thread to the cpu */ if (likely(!IS_ERR(thread))) { kthread_bind(thread, cpu); p->iothread = thread; wake_up_process(thread); } } static void bnx2fc_percpu_thread_destroy(unsigned int cpu) { struct bnx2fc_percpu_s *p; struct task_struct *thread; struct bnx2fc_work *work, *tmp; BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); /* Prevent any new work from being queued for this CPU */ p = &per_cpu(bnx2fc_percpu, cpu); spin_lock_bh(&p->fp_work_lock); thread = p->iothread; p->iothread = NULL; /* Free all work in the list */ list_for_each_entry_safe(work, tmp, &p->work_list, list) { list_del_init(&work->list); bnx2fc_process_cq_compl(work->tgt, work->wqe); kfree(work); } spin_unlock_bh(&p->fp_work_lock); if (thread) kthread_stop(thread); } /** * bnx2fc_cpu_callback - Handler for CPU hotplug events * * @nfb: The callback data block * @action: The event triggering the callback * @hcpu: The index of the CPU that the event is for * * This creates or destroys per-CPU data for fcoe * * Returns NOTIFY_OK always. */ static int bnx2fc_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) { unsigned cpu = (unsigned long)hcpu; switch (action) { case CPU_ONLINE: case CPU_ONLINE_FROZEN: printk(PFX "CPU %x online: Create Rx thread\n", cpu); bnx2fc_percpu_thread_create(cpu); break; case CPU_DEAD: case CPU_DEAD_FROZEN: printk(PFX "CPU %x offline: Remove Rx thread\n", cpu); bnx2fc_percpu_thread_destroy(cpu); break; default: break; } return NOTIFY_OK; } /** * bnx2fc_mod_init - module init entry point * * Initialize driver wide global data structures, and register * with cnic module **/ static int __init bnx2fc_mod_init(void) { struct fcoe_percpu_s *bg; struct task_struct *l2_thread; int rc = 0; unsigned int cpu = 0; struct bnx2fc_percpu_s *p; printk(KERN_INFO PFX "%s", version); /* register as a fcoe transport */ rc = fcoe_transport_attach(&bnx2fc_transport); if (rc) { printk(KERN_ERR "failed to register an fcoe transport, check " "if libfcoe is loaded\n"); goto out; } INIT_LIST_HEAD(&adapter_list); INIT_LIST_HEAD(&if_list); mutex_init(&bnx2fc_dev_lock); adapter_count = 0; /* Attach FC transport template */ rc = bnx2fc_attach_transport(); if (rc) goto detach_ft; bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); if (!bnx2fc_wq) { rc = -ENOMEM; goto release_bt; } bg = &bnx2fc_global; skb_queue_head_init(&bg->fcoe_rx_list); l2_thread = kthread_create(bnx2fc_l2_rcv_thread, (void *)bg, "bnx2fc_l2_thread"); if (IS_ERR(l2_thread)) { rc = PTR_ERR(l2_thread); goto free_wq; } wake_up_process(l2_thread); spin_lock_bh(&bg->fcoe_rx_list.lock); bg->thread = l2_thread; spin_unlock_bh(&bg->fcoe_rx_list.lock); for_each_possible_cpu(cpu) { p = &per_cpu(bnx2fc_percpu, cpu); INIT_LIST_HEAD(&p->work_list); spin_lock_init(&p->fp_work_lock); } for_each_online_cpu(cpu) { bnx2fc_percpu_thread_create(cpu); } /* Initialize per CPU interrupt thread */ register_hotcpu_notifier(&bnx2fc_cpu_notifier); cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); return 0; free_wq: destroy_workqueue(bnx2fc_wq); release_bt: bnx2fc_release_transport(); detach_ft: fcoe_transport_detach(&bnx2fc_transport); out: return rc; } static void __exit bnx2fc_mod_exit(void) { LIST_HEAD(to_be_deleted); struct bnx2fc_hba *hba, *next; struct fcoe_percpu_s *bg; struct task_struct *l2_thread; struct sk_buff *skb; unsigned int cpu = 0; /* * NOTE: Since cnic calls register_driver routine rtnl_lock, * it will have higher precedence than bnx2fc_dev_lock. * unregister_device() cannot be called with bnx2fc_dev_lock * held. */ mutex_lock(&bnx2fc_dev_lock); list_splice(&adapter_list, &to_be_deleted); INIT_LIST_HEAD(&adapter_list); adapter_count = 0; mutex_unlock(&bnx2fc_dev_lock); /* Unregister with cnic */ list_for_each_entry_safe(hba, next, &to_be_deleted, list) { list_del_init(&hba->list); printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", hba); bnx2fc_ulp_stop(hba); /* unregister cnic device */ if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); bnx2fc_hba_destroy(hba); } cnic_unregister_driver(CNIC_ULP_FCOE); /* Destroy global thread */ bg = &bnx2fc_global; spin_lock_bh(&bg->fcoe_rx_list.lock); l2_thread = bg->thread; bg->thread = NULL; while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) kfree_skb(skb); spin_unlock_bh(&bg->fcoe_rx_list.lock); if (l2_thread) kthread_stop(l2_thread); unregister_hotcpu_notifier(&bnx2fc_cpu_notifier); /* Destroy per cpu threads */ for_each_online_cpu(cpu) { bnx2fc_percpu_thread_destroy(cpu); } destroy_workqueue(bnx2fc_wq); /* * detach from scsi transport * must happen after all destroys are done */ bnx2fc_release_transport(); /* detach from fcoe transport */ fcoe_transport_detach(&bnx2fc_transport); } module_init(bnx2fc_mod_init); module_exit(bnx2fc_mod_exit); static struct fc_function_template bnx2fc_transport_function = { .show_host_node_name = 1, .show_host_port_name = 1, .show_host_supported_classes = 1, .show_host_supported_fc4s = 1, .show_host_active_fc4s = 1, .show_host_maxframe_size = 1, .show_host_port_id = 1, .show_host_supported_speeds = 1, .get_host_speed = fc_get_host_speed, .show_host_speed = 1, .show_host_port_type = 1, .get_host_port_state = fc_get_host_port_state, .show_host_port_state = 1, .show_host_symbolic_name = 1, .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + sizeof(struct bnx2fc_rport)), .show_rport_maxframe_size = 1, .show_rport_supported_classes = 1, .show_host_fabric_name = 1, .show_starget_node_name = 1, .show_starget_port_name = 1, .show_starget_port_id = 1, .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, .show_rport_dev_loss_tmo = 1, .get_fc_host_stats = bnx2fc_get_host_stats, .issue_fc_host_lip = bnx2fc_fcoe_reset, .terminate_rport_io = fc_rport_terminate_io, .vport_create = bnx2fc_vport_create, .vport_delete = bnx2fc_vport_destroy, .vport_disable = bnx2fc_vport_disable, .bsg_request = fc_lport_bsg_request, }; static struct fc_function_template bnx2fc_vport_xport_function = { .show_host_node_name = 1, .show_host_port_name = 1, .show_host_supported_classes = 1, .show_host_supported_fc4s = 1, .show_host_active_fc4s = 1, .show_host_maxframe_size = 1, .show_host_port_id = 1, .show_host_supported_speeds = 1, .get_host_speed = fc_get_host_speed, .show_host_speed = 1, .show_host_port_type = 1, .get_host_port_state = fc_get_host_port_state, .show_host_port_state = 1, .show_host_symbolic_name = 1, .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + sizeof(struct bnx2fc_rport)), .show_rport_maxframe_size = 1, .show_rport_supported_classes = 1, .show_host_fabric_name = 1, .show_starget_node_name = 1, .show_starget_port_name = 1, .show_starget_port_id = 1, .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, .show_rport_dev_loss_tmo = 1, .get_fc_host_stats = fc_get_host_stats, .issue_fc_host_lip = bnx2fc_fcoe_reset, .terminate_rport_io = fc_rport_terminate_io, .bsg_request = fc_lport_bsg_request, }; /** * scsi_host_template structure used while registering with SCSI-ml */ static struct scsi_host_template bnx2fc_shost_template = { .module = THIS_MODULE, .name = "Broadcom Offload FCoE Initiator", .queuecommand = bnx2fc_queuecommand, .eh_abort_handler = bnx2fc_eh_abort, /* abts */ .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ .eh_host_reset_handler = fc_eh_host_reset, .slave_alloc = fc_slave_alloc, .change_queue_depth = fc_change_queue_depth, .change_queue_type = fc_change_queue_type, .this_id = -1, .cmd_per_lun = 3, .can_queue = BNX2FC_CAN_QUEUE, .use_clustering = ENABLE_CLUSTERING, .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, .max_sectors = 512, }; static struct libfc_function_template bnx2fc_libfc_fcn_templ = { .frame_send = bnx2fc_xmit, .elsct_send = bnx2fc_elsct_send, .fcp_abort_io = bnx2fc_abort_io, .fcp_cleanup = bnx2fc_cleanup, .get_lesb = bnx2fc_get_lesb, .rport_event_callback = bnx2fc_rport_event_handler, }; /** * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface * structure carrying callback function pointers */ static struct cnic_ulp_ops bnx2fc_cnic_cb = { .owner = THIS_MODULE, .cnic_init = bnx2fc_ulp_init, .cnic_exit = bnx2fc_ulp_exit, .cnic_start = bnx2fc_ulp_start, .cnic_stop = bnx2fc_ulp_stop, .indicate_kcqes = bnx2fc_indicate_kcqe, .indicate_netevent = bnx2fc_indicate_netevent, };