drivers/scsi/bnx2fc/bnx2fc_fcoe.c

   1 /* bnx2fc_fcoe.c: Broadcom NetXtreme II Linux FCoE offload driver.
   2  * This file contains the code that interacts with libfc, libfcoe,
   3  * cnic modules to create FCoE instances, send/receive non-offloaded
   4  * FIP/FCoE packets, listen to link events etc.
   5  *
   6  * Copyright (c) 2008 - 2011 Broadcom Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation.
  11  *
  12  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
  13  */
  14
  15 #include "bnx2fc.h"
  16
  17 static struct list_head adapter_list;
  18 static struct list_head if_list;
  19 static u32 adapter_count;
  20 static DEFINE_MUTEX(bnx2fc_dev_lock);
  21 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
  22
  23 #define DRV_MODULE_NAME         "bnx2fc"
  24 #define DRV_MODULE_VERSION      BNX2FC_VERSION
  25 #define DRV_MODULE_RELDATE      "Apr 24, 2012"
  26
  27
  28 static char version[] __devinitdata =
  29                 "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \
  30                 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
  31
  32
  33 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
  34 MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver");
  35 MODULE_LICENSE("GPL");
  36 MODULE_VERSION(DRV_MODULE_VERSION);
  37
  38 #define BNX2FC_MAX_QUEUE_DEPTH  256
  39 #define BNX2FC_MIN_QUEUE_DEPTH  32
  40 #define FCOE_WORD_TO_BYTE  4
  41
  42 static struct scsi_transport_template   *bnx2fc_transport_template;
  43 static struct scsi_transport_template   *bnx2fc_vport_xport_template;
  44
  45 struct workqueue_struct *bnx2fc_wq;
  46
  47 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
  48  * Here the io threads are per cpu but the l2 thread is just one
  49  */
  50 struct fcoe_percpu_s bnx2fc_global;
  51 DEFINE_SPINLOCK(bnx2fc_global_lock);
  52
  53 static struct cnic_ulp_ops bnx2fc_cnic_cb;
  54 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
  55 static struct scsi_host_template bnx2fc_shost_template;
  56 static struct fc_function_template bnx2fc_transport_function;
  57 static struct fc_function_template bnx2fc_vport_xport_function;
  58 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
  59 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
  60 static int bnx2fc_destroy(struct net_device *net_device);
  61 static int bnx2fc_enable(struct net_device *netdev);
  62 static int bnx2fc_disable(struct net_device *netdev);
  63
  64 static void bnx2fc_recv_frame(struct sk_buff *skb);
  65
  66 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
  67 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
  68 static int bnx2fc_lport_config(struct fc_lport *lport);
  69 static int bnx2fc_em_config(struct fc_lport *lport);
  70 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
  71 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
  72 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
  73 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
  74 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
  75                                   struct device *parent, int npiv);
  76 static void bnx2fc_destroy_work(struct work_struct *work);
  77
  78 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
  79 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
  80                                                         *phys_dev);
  81 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
  82 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
  83
  84 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
  85 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
  86
  87 static void bnx2fc_port_shutdown(struct fc_lport *lport);
  88 static void bnx2fc_stop(struct bnx2fc_interface *interface);
  89 static int __init bnx2fc_mod_init(void);
  90 static void __exit bnx2fc_mod_exit(void);
  91
  92 unsigned int bnx2fc_debug_level;
  93 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
  94
  95 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
  96                              unsigned long action, void *hcpu);
  97 /* notification function for CPU hotplug events */
  98 static struct notifier_block bnx2fc_cpu_notifier = {
  99         .notifier_call = bnx2fc_cpu_callback,
 100 };
 101
 102 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
 103 {
 104         return ((struct bnx2fc_interface *)
 105                 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
 106 }
 107
 108 /**
 109  * bnx2fc_get_lesb() - Fill the FCoE Link Error Status Block
 110  * @lport: the local port
 111  * @fc_lesb: the link error status block
 112  */
 113 static void bnx2fc_get_lesb(struct fc_lport *lport,
 114                             struct fc_els_lesb *fc_lesb)
 115 {
 116         struct net_device *netdev = bnx2fc_netdev(lport);
 117
 118         __fcoe_get_lesb(lport, fc_lesb, netdev);
 119 }
 120
 121 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
 122 {
 123         struct fcoe_percpu_s *bg;
 124         struct fcoe_rcv_info *fr;
 125         struct sk_buff_head *list;
 126         struct sk_buff *skb, *next;
 127         struct sk_buff *head;
 128
 129         bg = &bnx2fc_global;
 130         spin_lock_bh(&bg->fcoe_rx_list.lock);
 131         list = &bg->fcoe_rx_list;
 132         head = list->next;
 133         for (skb = head; skb != (struct sk_buff *)list;
 134              skb = next) {
 135                 next = skb->next;
 136                 fr = fcoe_dev_from_skb(skb);
 137                 if (fr->fr_dev == lp) {
 138                         __skb_unlink(skb, list);
 139                         kfree_skb(skb);
 140                 }
 141         }
 142         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 143 }
 144
 145 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 146 {
 147         int rc;
 148         spin_lock(&bnx2fc_global_lock);
 149         rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
 150         spin_unlock(&bnx2fc_global_lock);
 151
 152         return rc;
 153 }
 154
 155 static void bnx2fc_abort_io(struct fc_lport *lport)
 156 {
 157         /*
 158          * This function is no-op for bnx2fc, but we do
 159          * not want to leave it as NULL either, as libfc
 160          * can call the default function which is
 161          * fc_fcp_abort_io.
 162          */
 163 }
 164
 165 static void bnx2fc_cleanup(struct fc_lport *lport)
 166 {
 167         struct fcoe_port *port = lport_priv(lport);
 168         struct bnx2fc_interface *interface = port->priv;
 169         struct bnx2fc_hba *hba = interface->hba;
 170         struct bnx2fc_rport *tgt;
 171         int i;
 172
 173         BNX2FC_MISC_DBG("Entered %s\n", __func__);
 174         mutex_lock(&hba->hba_mutex);
 175         spin_lock_bh(&hba->hba_lock);
 176         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
 177                 tgt = hba->tgt_ofld_list[i];
 178                 if (tgt) {
 179                         /* Cleanup IOs belonging to requested vport */
 180                         if (tgt->port == port) {
 181                                 spin_unlock_bh(&hba->hba_lock);
 182                                 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
 183                                 bnx2fc_flush_active_ios(tgt);
 184                                 spin_lock_bh(&hba->hba_lock);
 185                         }
 186                 }
 187         }
 188         spin_unlock_bh(&hba->hba_lock);
 189         mutex_unlock(&hba->hba_mutex);
 190 }
 191
 192 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
 193                              struct fc_frame *fp)
 194 {
 195         struct fc_rport_priv *rdata = tgt->rdata;
 196         struct fc_frame_header *fh;
 197         int rc = 0;
 198
 199         fh = fc_frame_header_get(fp);
 200         BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
 201                         "r_ctl = 0x%x\n", rdata->ids.port_id,
 202                         ntohs(fh->fh_ox_id), fh->fh_r_ctl);
 203         if ((fh->fh_type == FC_TYPE_ELS) &&
 204             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 205
 206                 switch (fc_frame_payload_op(fp)) {
 207                 case ELS_ADISC:
 208                         rc = bnx2fc_send_adisc(tgt, fp);
 209                         break;
 210                 case ELS_LOGO:
 211                         rc = bnx2fc_send_logo(tgt, fp);
 212                         break;
 213                 case ELS_RLS:
 214                         rc = bnx2fc_send_rls(tgt, fp);
 215                         break;
 216                 default:
 217                         break;
 218                 }
 219         } else if ((fh->fh_type ==  FC_TYPE_BLS) &&
 220             (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
 221                 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
 222         else {
 223                 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
 224                                 "rctl 0x%x thru non-offload path\n",
 225                                 fh->fh_type, fh->fh_r_ctl);
 226                 return -ENODEV;
 227         }
 228         if (rc)
 229                 return -ENOMEM;
 230         else
 231                 return 0;
 232 }
 233
 234 /**
 235  * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
 236  *
 237  * @lport:      the associated local port
 238  * @fp: the fc_frame to be transmitted
 239  */
 240 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
 241 {
 242         struct ethhdr           *eh;
 243         struct fcoe_crc_eof     *cp;
 244         struct sk_buff          *skb;
 245         struct fc_frame_header  *fh;
 246         struct bnx2fc_interface *interface;
 247         struct fcoe_ctlr        *ctlr;
 248         struct bnx2fc_hba *hba;
 249         struct fcoe_port        *port;
 250         struct fcoe_hdr         *hp;
 251         struct bnx2fc_rport     *tgt;
 252         struct fcoe_dev_stats   *stats;
 253         u8                      sof, eof;
 254         u32                     crc;
 255         unsigned int            hlen, tlen, elen;
 256         int                     wlen, rc = 0;
 257
 258         port = (struct fcoe_port *)lport_priv(lport);
 259         interface = port->priv;
 260         ctlr = bnx2fc_to_ctlr(interface);
 261         hba = interface->hba;
 262
 263         fh = fc_frame_header_get(fp);
 264
 265         skb = fp_skb(fp);
 266         if (!lport->link_up) {
 267                 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
 268                 kfree_skb(skb);
 269                 return 0;
 270         }
 271
 272         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 273                 if (!ctlr->sel_fcf) {
 274                         BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
 275                         kfree_skb(skb);
 276                         return -EINVAL;
 277                 }
 278                 if (fcoe_ctlr_els_send(ctlr, lport, skb))
 279                         return 0;
 280         }
 281
 282         sof = fr_sof(fp);
 283         eof = fr_eof(fp);
 284
 285         /*
 286          * Snoop the frame header to check if the frame is for
 287          * an offloaded session
 288          */
 289         /*
 290          * tgt_ofld_list access is synchronized using
 291          * both hba mutex and hba lock. Atleast hba mutex or
 292          * hba lock needs to be held for read access.
 293          */
 294
 295         spin_lock_bh(&hba->hba_lock);
 296         tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
 297         if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
 298                 /* This frame is for offloaded session */
 299                 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
 300                                 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
 301                 spin_unlock_bh(&hba->hba_lock);
 302                 rc = bnx2fc_xmit_l2_frame(tgt, fp);
 303                 if (rc != -ENODEV) {
 304                         kfree_skb(skb);
 305                         return rc;
 306                 }
 307         } else {
 308                 spin_unlock_bh(&hba->hba_lock);
 309         }
 310
 311         elen = sizeof(struct ethhdr);
 312         hlen = sizeof(struct fcoe_hdr);
 313         tlen = sizeof(struct fcoe_crc_eof);
 314         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 315
 316         skb->ip_summed = CHECKSUM_NONE;
 317         crc = fcoe_fc_crc(fp);
 318
 319         /* copy port crc and eof to the skb buff */
 320         if (skb_is_nonlinear(skb)) {
 321                 skb_frag_t *frag;
 322                 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
 323                         kfree_skb(skb);
 324                         return -ENOMEM;
 325                 }
 326                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
 327                 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
 328         } else {
 329                 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
 330         }
 331
 332         memset(cp, 0, sizeof(*cp));
 333         cp->fcoe_eof = eof;
 334         cp->fcoe_crc32 = cpu_to_le32(~crc);
 335         if (skb_is_nonlinear(skb)) {
 336                 kunmap_atomic(cp);
 337                 cp = NULL;
 338         }
 339
 340         /* adjust skb network/transport offsets to match mac/fcoe/port */
 341         skb_push(skb, elen + hlen);
 342         skb_reset_mac_header(skb);
 343         skb_reset_network_header(skb);
 344         skb->mac_len = elen;
 345         skb->protocol = htons(ETH_P_FCOE);
 346         skb->dev = interface->netdev;
 347
 348         /* fill up mac and fcoe headers */
 349         eh = eth_hdr(skb);
 350         eh->h_proto = htons(ETH_P_FCOE);
 351         if (ctlr->map_dest)
 352                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
 353         else
 354                 /* insert GW address */
 355                 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
 356
 357         if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
 358                 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
 359         else
 360                 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
 361
 362         hp = (struct fcoe_hdr *)(eh + 1);
 363         memset(hp, 0, sizeof(*hp));
 364         if (FC_FCOE_VER)
 365                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
 366         hp->fcoe_sof = sof;
 367
 368         /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
 369         if (lport->seq_offload && fr_max_payload(fp)) {
 370                 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
 371                 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
 372         } else {
 373                 skb_shinfo(skb)->gso_type = 0;
 374                 skb_shinfo(skb)->gso_size = 0;
 375         }
 376
 377         /*update tx stats */
 378         stats = per_cpu_ptr(lport->dev_stats, get_cpu());
 379         stats->TxFrames++;
 380         stats->TxWords += wlen;
 381         put_cpu();
 382
 383         /* send down to lld */
 384         fr_dev(fp) = lport;
 385         if (port->fcoe_pending_queue.qlen)
 386                 fcoe_check_wait_queue(lport, skb);
 387         else if (fcoe_start_io(skb))
 388                 fcoe_check_wait_queue(lport, skb);
 389
 390         return 0;
 391 }
 392
 393 /**
 394  * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
 395  *
 396  * @skb:        the receive socket buffer
 397  * @dev:        associated net device
 398  * @ptype:      context
 399  * @olddev:     last device
 400  *
 401  * This function receives the packet and builds FC frame and passes it up
 402  */
 403 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
 404                 struct packet_type *ptype, struct net_device *olddev)
 405 {
 406         struct fc_lport *lport;
 407         struct bnx2fc_interface *interface;
 408         struct fcoe_ctlr *ctlr;
 409         struct fc_frame_header *fh;
 410         struct fcoe_rcv_info *fr;
 411         struct fcoe_percpu_s *bg;
 412         unsigned short oxid;
 413
 414         interface = container_of(ptype, struct bnx2fc_interface,
 415                                  fcoe_packet_type);
 416         ctlr = bnx2fc_to_ctlr(interface);
 417         lport = ctlr->lp;
 418
 419         if (unlikely(lport == NULL)) {
 420                 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
 421                 goto err;
 422         }
 423
 424         if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
 425                 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
 426                 goto err;
 427         }
 428
 429         /*
 430          * Check for minimum frame length, and make sure required FCoE
 431          * and FC headers are pulled into the linear data area.
 432          */
 433         if (unlikely((skb->len < FCOE_MIN_FRAME) ||
 434             !pskb_may_pull(skb, FCOE_HEADER_LEN)))
 435                 goto err;
 436
 437         skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
 438         fh = (struct fc_frame_header *) skb_transport_header(skb);
 439
 440         oxid = ntohs(fh->fh_ox_id);
 441
 442         fr = fcoe_dev_from_skb(skb);
 443         fr->fr_dev = lport;
 444
 445         bg = &bnx2fc_global;
 446         spin_lock(&bg->fcoe_rx_list.lock);
 447
 448         __skb_queue_tail(&bg->fcoe_rx_list, skb);
 449         if (bg->fcoe_rx_list.qlen == 1)
 450                 wake_up_process(bg->thread);
 451
 452         spin_unlock(&bg->fcoe_rx_list.lock);
 453
 454         return 0;
 455 err:
 456         kfree_skb(skb);
 457         return -1;
 458 }
 459
 460 static int bnx2fc_l2_rcv_thread(void *arg)
 461 {
 462         struct fcoe_percpu_s *bg = arg;
 463         struct sk_buff *skb;
 464
 465         set_user_nice(current, -20);
 466         set_current_state(TASK_INTERRUPTIBLE);
 467         while (!kthread_should_stop()) {
 468                 schedule();
 469                 spin_lock_bh(&bg->fcoe_rx_list.lock);
 470                 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
 471                         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 472                         bnx2fc_recv_frame(skb);
 473                         spin_lock_bh(&bg->fcoe_rx_list.lock);
 474                 }
 475                 __set_current_state(TASK_INTERRUPTIBLE);
 476                 spin_unlock_bh(&bg->fcoe_rx_list.lock);
 477         }
 478         __set_current_state(TASK_RUNNING);
 479         return 0;
 480 }
 481
 482
 483 static void bnx2fc_recv_frame(struct sk_buff *skb)
 484 {
 485         u32 fr_len;
 486         struct fc_lport *lport;
 487         struct fcoe_rcv_info *fr;
 488         struct fcoe_dev_stats *stats;
 489         struct fc_frame_header *fh;
 490         struct fcoe_crc_eof crc_eof;
 491         struct fc_frame *fp;
 492         struct fc_lport *vn_port;
 493         struct fcoe_port *port;
 494         u8 *mac = NULL;
 495         u8 *dest_mac = NULL;
 496         struct fcoe_hdr *hp;
 497
 498         fr = fcoe_dev_from_skb(skb);
 499         lport = fr->fr_dev;
 500         if (unlikely(lport == NULL)) {
 501                 printk(KERN_ERR PFX "Invalid lport struct\n");
 502                 kfree_skb(skb);
 503                 return;
 504         }
 505
 506         if (skb_is_nonlinear(skb))
 507                 skb_linearize(skb);
 508         mac = eth_hdr(skb)->h_source;
 509         dest_mac = eth_hdr(skb)->h_dest;
 510
 511         /* Pull the header */
 512         hp = (struct fcoe_hdr *) skb_network_header(skb);
 513         fh = (struct fc_frame_header *) skb_transport_header(skb);
 514         skb_pull(skb, sizeof(struct fcoe_hdr));
 515         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
 516
 517         stats = per_cpu_ptr(lport->dev_stats, get_cpu());
 518         stats->RxFrames++;
 519         stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
 520
 521         fp = (struct fc_frame *)skb;
 522         fc_frame_init(fp);
 523         fr_dev(fp) = lport;
 524         fr_sof(fp) = hp->fcoe_sof;
 525         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
 526                 put_cpu();
 527                 kfree_skb(skb);
 528                 return;
 529         }
 530         fr_eof(fp) = crc_eof.fcoe_eof;
 531         fr_crc(fp) = crc_eof.fcoe_crc32;
 532         if (pskb_trim(skb, fr_len)) {
 533                 put_cpu();
 534                 kfree_skb(skb);
 535                 return;
 536         }
 537
 538         fh = fc_frame_header_get(fp);
 539
 540         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
 541         if (vn_port) {
 542                 port = lport_priv(vn_port);
 543                 if (compare_ether_addr(port->data_src_addr, dest_mac)
 544                     != 0) {
 545                         BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
 546                         put_cpu();
 547                         kfree_skb(skb);
 548                         return;
 549                 }
 550         }
 551         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
 552             fh->fh_type == FC_TYPE_FCP) {
 553                 /* Drop FCP data. We dont this in L2 path */
 554                 put_cpu();
 555                 kfree_skb(skb);
 556                 return;
 557         }
 558         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
 559             fh->fh_type == FC_TYPE_ELS) {
 560                 switch (fc_frame_payload_op(fp)) {
 561                 case ELS_LOGO:
 562                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
 563                                 /* drop non-FIP LOGO */
 564                                 put_cpu();
 565                                 kfree_skb(skb);
 566                                 return;
 567                         }
 568                         break;
 569                 }
 570         }
 571
 572         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
 573                 /* Drop incoming ABTS */
 574                 put_cpu();
 575                 kfree_skb(skb);
 576                 return;
 577         }
 578
 579         if (le32_to_cpu(fr_crc(fp)) !=
 580                         ~crc32(~0, skb->data, fr_len)) {
 581                 if (stats->InvalidCRCCount < 5)
 582                         printk(KERN_WARNING PFX "dropping frame with "
 583                                "CRC error\n");
 584                 stats->InvalidCRCCount++;
 585                 put_cpu();
 586                 kfree_skb(skb);
 587                 return;
 588         }
 589         put_cpu();
 590         fc_exch_recv(lport, fp);
 591 }
 592
 593 /**
 594  * bnx2fc_percpu_io_thread - thread per cpu for ios
 595  *
 596  * @arg:        ptr to bnx2fc_percpu_info structure
 597  */
 598 int bnx2fc_percpu_io_thread(void *arg)
 599 {
 600         struct bnx2fc_percpu_s *p = arg;
 601         struct bnx2fc_work *work, *tmp;
 602         LIST_HEAD(work_list);
 603
 604         set_user_nice(current, -20);
 605         set_current_state(TASK_INTERRUPTIBLE);
 606         while (!kthread_should_stop()) {
 607                 schedule();
 608                 spin_lock_bh(&p->fp_work_lock);
 609                 while (!list_empty(&p->work_list)) {
 610                         list_splice_init(&p->work_list, &work_list);
 611                         spin_unlock_bh(&p->fp_work_lock);
 612
 613                         list_for_each_entry_safe(work, tmp, &work_list, list) {
 614                                 list_del_init(&work->list);
 615                                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
 616                                 kfree(work);
 617                         }
 618
 619                         spin_lock_bh(&p->fp_work_lock);
 620                 }
 621                 __set_current_state(TASK_INTERRUPTIBLE);
 622                 spin_unlock_bh(&p->fp_work_lock);
 623         }
 624         __set_current_state(TASK_RUNNING);
 625
 626         return 0;
 627 }
 628
 629 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
 630 {
 631         struct fc_host_statistics *bnx2fc_stats;
 632         struct fc_lport *lport = shost_priv(shost);
 633         struct fcoe_port *port = lport_priv(lport);
 634         struct bnx2fc_interface *interface = port->priv;
 635         struct bnx2fc_hba *hba = interface->hba;
 636         struct fcoe_statistics_params *fw_stats;
 637         int rc = 0;
 638
 639         fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
 640         if (!fw_stats)
 641                 return NULL;
 642
 643         bnx2fc_stats = fc_get_host_stats(shost);
 644
 645         init_completion(&hba->stat_req_done);
 646         if (bnx2fc_send_stat_req(hba))
 647                 return bnx2fc_stats;
 648         rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
 649         if (!rc) {
 650                 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
 651                 return bnx2fc_stats;
 652         }
 653         bnx2fc_stats->invalid_crc_count += fw_stats->rx_stat2.fc_crc_cnt;
 654         bnx2fc_stats->tx_frames += fw_stats->tx_stat.fcoe_tx_pkt_cnt;
 655         bnx2fc_stats->tx_words += (fw_stats->tx_stat.fcoe_tx_byte_cnt) / 4;
 656         bnx2fc_stats->rx_frames += fw_stats->rx_stat0.fcoe_rx_pkt_cnt;
 657         bnx2fc_stats->rx_words += (fw_stats->rx_stat0.fcoe_rx_byte_cnt) / 4;
 658
 659         bnx2fc_stats->dumped_frames = 0;
 660         bnx2fc_stats->lip_count = 0;
 661         bnx2fc_stats->nos_count = 0;
 662         bnx2fc_stats->loss_of_sync_count = 0;
 663         bnx2fc_stats->loss_of_signal_count = 0;
 664         bnx2fc_stats->prim_seq_protocol_err_count = 0;
 665
 666         return bnx2fc_stats;
 667 }
 668
 669 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
 670 {
 671         struct fcoe_port *port = lport_priv(lport);
 672         struct bnx2fc_interface *interface = port->priv;
 673         struct Scsi_Host *shost = lport->host;
 674         int rc = 0;
 675
 676         shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
 677         shost->max_lun = BNX2FC_MAX_LUN;
 678         shost->max_id = BNX2FC_MAX_FCP_TGT;
 679         shost->max_channel = 0;
 680         if (lport->vport)
 681                 shost->transportt = bnx2fc_vport_xport_template;
 682         else
 683                 shost->transportt = bnx2fc_transport_template;
 684
 685         /* Add the new host to SCSI-ml */
 686         rc = scsi_add_host(lport->host, dev);
 687         if (rc) {
 688                 printk(KERN_ERR PFX "Error on scsi_add_host\n");
 689                 return rc;
 690         }
 691         if (!lport->vport)
 692                 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
 693         sprintf(fc_host_symbolic_name(lport->host), "%s v%s over %s",
 694                 BNX2FC_NAME, BNX2FC_VERSION,
 695                 interface->netdev->name);
 696
 697         return 0;
 698 }
 699
 700 static void bnx2fc_link_speed_update(struct fc_lport *lport)
 701 {
 702         struct fcoe_port *port = lport_priv(lport);
 703         struct bnx2fc_interface *interface = port->priv;
 704         struct net_device *netdev = interface->netdev;
 705         struct ethtool_cmd ecmd;
 706
 707         if (!__ethtool_get_settings(netdev, &ecmd)) {
 708                 lport->link_supported_speeds &=
 709                         ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT);
 710                 if (ecmd.supported & (SUPPORTED_1000baseT_Half |
 711                                       SUPPORTED_1000baseT_Full))
 712                         lport->link_supported_speeds |= FC_PORTSPEED_1GBIT;
 713                 if (ecmd.supported & SUPPORTED_10000baseT_Full)
 714                         lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 715
 716                 switch (ethtool_cmd_speed(&ecmd)) {
 717                 case SPEED_1000:
 718                         lport->link_speed = FC_PORTSPEED_1GBIT;
 719                         break;
 720                 case SPEED_2500:
 721                         lport->link_speed = FC_PORTSPEED_2GBIT;
 722                         break;
 723                 case SPEED_10000:
 724                         lport->link_speed = FC_PORTSPEED_10GBIT;
 725                         break;
 726                 }
 727         }
 728 }
 729 static int bnx2fc_link_ok(struct fc_lport *lport)
 730 {
 731         struct fcoe_port *port = lport_priv(lport);
 732         struct bnx2fc_interface *interface = port->priv;
 733         struct bnx2fc_hba *hba = interface->hba;
 734         struct net_device *dev = hba->phys_dev;
 735         int rc = 0;
 736
 737         if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
 738                 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 739         else {
 740                 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 741                 rc = -1;
 742         }
 743         return rc;
 744 }
 745
 746 /**
 747  * bnx2fc_get_link_state - get network link state
 748  *
 749  * @hba:        adapter instance pointer
 750  *
 751  * updates adapter structure flag based on netdev state
 752  */
 753 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
 754 {
 755         if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
 756                 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 757         else
 758                 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 759 }
 760
 761 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
 762 {
 763         struct bnx2fc_hba *hba;
 764         struct bnx2fc_interface *interface;
 765         struct fcoe_ctlr *ctlr;
 766         struct fcoe_port *port;
 767         u64 wwnn, wwpn;
 768
 769         port = lport_priv(lport);
 770         interface = port->priv;
 771         ctlr = bnx2fc_to_ctlr(interface);
 772         hba = interface->hba;
 773
 774         /* require support for get_pauseparam ethtool op. */
 775         if (!hba->phys_dev->ethtool_ops ||
 776             !hba->phys_dev->ethtool_ops->get_pauseparam)
 777                 return -EOPNOTSUPP;
 778
 779         if (fc_set_mfs(lport, BNX2FC_MFS))
 780                 return -EINVAL;
 781
 782         skb_queue_head_init(&port->fcoe_pending_queue);
 783         port->fcoe_pending_queue_active = 0;
 784         setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
 785
 786         bnx2fc_link_speed_update(lport);
 787
 788         if (!lport->vport) {
 789                 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
 790                         wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
 791                                                  1, 0);
 792                 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
 793                 fc_set_wwnn(lport, wwnn);
 794
 795                 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
 796                         wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
 797                                                  2, 0);
 798
 799                 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
 800                 fc_set_wwpn(lport, wwpn);
 801         }
 802
 803         return 0;
 804 }
 805
 806 static void bnx2fc_destroy_timer(unsigned long data)
 807 {
 808         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
 809
 810         printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
 811                "Destroy compl not received!!\n");
 812         set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
 813         wake_up_interruptible(&hba->destroy_wait);
 814 }
 815
 816 /**
 817  * bnx2fc_indicate_netevent - Generic netdev event handler
 818  *
 819  * @context:    adapter structure pointer
 820  * @event:      event type
 821  * @vlan_id:    vlan id - associated vlan id with this event
 822  *
 823  * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
 824  * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
 825  */
 826 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
 827                                      u16 vlan_id)
 828 {
 829         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
 830         struct fc_lport *lport;
 831         struct fc_lport *vport;
 832         struct bnx2fc_interface *interface, *tmp;
 833         struct fcoe_ctlr *ctlr;
 834         int wait_for_upload = 0;
 835         u32 link_possible = 1;
 836
 837         if (vlan_id != 0 && event != NETDEV_UNREGISTER)
 838                 return;
 839
 840         switch (event) {
 841         case NETDEV_UP:
 842                 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
 843                         printk(KERN_ERR "indicate_netevent: "\
 844                                         "hba is not UP!!\n");
 845                 break;
 846
 847         case NETDEV_DOWN:
 848                 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 849                 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
 850                 link_possible = 0;
 851                 break;
 852
 853         case NETDEV_GOING_DOWN:
 854                 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 855                 link_possible = 0;
 856                 break;
 857
 858         case NETDEV_CHANGE:
 859                 break;
 860
 861         case NETDEV_UNREGISTER:
 862                 if (!vlan_id)
 863                         return;
 864                 mutex_lock(&bnx2fc_dev_lock);
 865                 list_for_each_entry_safe(interface, tmp, &if_list, list) {
 866                         if (interface->hba == hba &&
 867                             interface->vlan_id == (vlan_id & VLAN_VID_MASK))
 868                                 __bnx2fc_destroy(interface);
 869                 }
 870                 mutex_unlock(&bnx2fc_dev_lock);
 871                 return;
 872
 873         default:
 874                 printk(KERN_ERR PFX "Unkonwn netevent %ld", event);
 875                 return;
 876         }
 877
 878         mutex_lock(&bnx2fc_dev_lock);
 879         list_for_each_entry(interface, &if_list, list) {
 880
 881                 if (interface->hba != hba)
 882                         continue;
 883
 884                 ctlr = bnx2fc_to_ctlr(interface);
 885                 lport = ctlr->lp;
 886                 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
 887                                 interface->netdev->name, event);
 888
 889                 bnx2fc_link_speed_update(lport);
 890
 891                 if (link_possible && !bnx2fc_link_ok(lport)) {
 892                         /* Reset max recv frame size to default */
 893                         fc_set_mfs(lport, BNX2FC_MFS);
 894                         /*
 895                          * ctlr link up will only be handled during
 896                          * enable to avoid sending discovery solicitation
 897                          * on a stale vlan
 898                          */
 899                         if (interface->enabled)
 900                                 fcoe_ctlr_link_up(ctlr);
 901                 } else if (fcoe_ctlr_link_down(ctlr)) {
 902                         mutex_lock(&lport->lp_mutex);
 903                         list_for_each_entry(vport, &lport->vports, list)
 904                                 fc_host_port_type(vport->host) =
 905                                                         FC_PORTTYPE_UNKNOWN;
 906                         mutex_unlock(&lport->lp_mutex);
 907                         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
 908                         per_cpu_ptr(lport->dev_stats,
 909                                     get_cpu())->LinkFailureCount++;
 910                         put_cpu();
 911                         fcoe_clean_pending_queue(lport);
 912                         wait_for_upload = 1;
 913                 }
 914         }
 915         mutex_unlock(&bnx2fc_dev_lock);
 916
 917         if (wait_for_upload) {
 918                 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
 919                 init_waitqueue_head(&hba->shutdown_wait);
 920                 BNX2FC_MISC_DBG("indicate_netevent "
 921                                 "num_ofld_sess = %d\n",
 922                                 hba->num_ofld_sess);
 923                 hba->wait_for_link_down = 1;
 924                 wait_event_interruptible(hba->shutdown_wait,
 925                                          (hba->num_ofld_sess == 0));
 926                 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
 927                                 hba->num_ofld_sess);
 928                 hba->wait_for_link_down = 0;
 929
 930                 if (signal_pending(current))
 931                         flush_signals(current);
 932         }
 933 }
 934
 935 static int bnx2fc_libfc_config(struct fc_lport *lport)
 936 {
 937
 938         /* Set the function pointers set by bnx2fc driver */
 939         memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
 940                 sizeof(struct libfc_function_template));
 941         fc_elsct_init(lport);
 942         fc_exch_init(lport);
 943         fc_rport_init(lport);
 944         fc_disc_init(lport);
 945         return 0;
 946 }
 947
 948 static int bnx2fc_em_config(struct fc_lport *lport)
 949 {
 950         int max_xid;
 951
 952         if (nr_cpu_ids <= 2)
 953                 max_xid = FCOE_XIDS_PER_CPU;
 954         else
 955                 max_xid = FCOE_MAX_XID;
 956         if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID,
 957                                 max_xid, NULL)) {
 958                 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
 959                 return -ENOMEM;
 960         }
 961
 962         return 0;
 963 }
 964
 965 static int bnx2fc_lport_config(struct fc_lport *lport)
 966 {
 967         lport->link_up = 0;
 968         lport->qfull = 0;
 969         lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
 970         lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
 971         lport->e_d_tov = 2 * 1000;
 972         lport->r_a_tov = 10 * 1000;
 973
 974         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
 975                                 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
 976         lport->does_npiv = 1;
 977
 978         memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
 979         lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
 980
 981         /* alloc stats structure */
 982         if (fc_lport_init_stats(lport))
 983                 return -ENOMEM;
 984
 985         /* Finish fc_lport configuration */
 986         fc_lport_config(lport);
 987
 988         return 0;
 989 }
 990
 991 /**
 992  * bnx2fc_fip_recv - handle a received FIP frame.
 993  *
 994  * @skb: the received skb
 995  * @dev: associated &net_device
 996  * @ptype: the &packet_type structure which was used to register this handler.
 997  * @orig_dev: original receive &net_device, in case @ dev is a bond.
 998  *
 999  * Returns: 0 for success
1000  */
1001 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1002                            struct packet_type *ptype,
1003                            struct net_device *orig_dev)
1004 {
1005         struct bnx2fc_interface *interface;
1006         struct fcoe_ctlr *ctlr;
1007         interface = container_of(ptype, struct bnx2fc_interface,
1008                                  fip_packet_type);
1009         ctlr = bnx2fc_to_ctlr(interface);
1010         fcoe_ctlr_recv(ctlr, skb);
1011         return 0;
1012 }
1013
1014 /**
1015  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1016  *
1017  * @fip: FCoE controller.
1018  * @old: Unicast MAC address to delete if the MAC is non-zero.
1019  * @new: Unicast MAC address to add.
1020  *
1021  * Remove any previously-set unicast MAC filter.
1022  * Add secondary FCoE MAC address filter for our OUI.
1023  */
1024 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1025 {
1026         struct fcoe_port *port = lport_priv(lport);
1027
1028         memcpy(port->data_src_addr, addr, ETH_ALEN);
1029 }
1030
1031 /**
1032  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1033  *
1034  * @lport: libfc port
1035  */
1036 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1037 {
1038         struct fcoe_port *port;
1039
1040         port = (struct fcoe_port *)lport_priv(lport);
1041         return port->data_src_addr;
1042 }
1043
1044 /**
1045  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1046  *
1047  * @fip: FCoE controller.
1048  * @skb: FIP Packet.
1049  */
1050 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1051 {
1052         skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1053         dev_queue_xmit(skb);
1054 }
1055
1056 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1057 {
1058         struct Scsi_Host *shost = vport_to_shost(vport);
1059         struct fc_lport *n_port = shost_priv(shost);
1060         struct fcoe_port *port = lport_priv(n_port);
1061         struct bnx2fc_interface *interface = port->priv;
1062         struct net_device *netdev = interface->netdev;
1063         struct fc_lport *vn_port;
1064         int rc;
1065         char buf[32];
1066
1067         rc = fcoe_validate_vport_create(vport);
1068         if (rc) {
1069                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1070                 printk(KERN_ERR PFX "Failed to create vport, "
1071                        "WWPN (0x%s) already exists\n",
1072                        buf);
1073                 return rc;
1074         }
1075
1076         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1077                 printk(KERN_ERR PFX "vn ports cannot be created on"
1078                         "this interface\n");
1079                 return -EIO;
1080         }
1081         rtnl_lock();
1082         mutex_lock(&bnx2fc_dev_lock);
1083         vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1084         mutex_unlock(&bnx2fc_dev_lock);
1085         rtnl_unlock();
1086
1087         if (IS_ERR(vn_port)) {
1088                 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1089                         netdev->name);
1090                 return -EIO;
1091         }
1092
1093         if (disabled) {
1094                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1095         } else {
1096                 vn_port->boot_time = jiffies;
1097                 fc_lport_init(vn_port);
1098                 fc_fabric_login(vn_port);
1099                 fc_vport_setlink(vn_port);
1100         }
1101         return 0;
1102 }
1103
1104 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1105 {
1106         struct bnx2fc_lport *blport, *tmp;
1107
1108         spin_lock_bh(&hba->hba_lock);
1109         list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1110                 if (blport->lport == lport) {
1111                         list_del(&blport->list);
1112                         kfree(blport);
1113                 }
1114         }
1115         spin_unlock_bh(&hba->hba_lock);
1116 }
1117
1118 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1119 {
1120         struct Scsi_Host *shost = vport_to_shost(vport);
1121         struct fc_lport *n_port = shost_priv(shost);
1122         struct fc_lport *vn_port = vport->dd_data;
1123         struct fcoe_port *port = lport_priv(vn_port);
1124         struct bnx2fc_interface *interface = port->priv;
1125         struct fc_lport *v_port;
1126         bool found = false;
1127
1128         mutex_lock(&n_port->lp_mutex);
1129         list_for_each_entry(v_port, &n_port->vports, list)
1130                 if (v_port->vport == vport) {
1131                         found = true;
1132                         break;
1133                 }
1134
1135         if (!found) {
1136                 mutex_unlock(&n_port->lp_mutex);
1137                 return -ENOENT;
1138         }
1139         list_del(&vn_port->list);
1140         mutex_unlock(&n_port->lp_mutex);
1141         bnx2fc_free_vport(interface->hba, port->lport);
1142         bnx2fc_port_shutdown(port->lport);
1143         bnx2fc_interface_put(interface);
1144         queue_work(bnx2fc_wq, &port->destroy_work);
1145         return 0;
1146 }
1147
1148 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1149 {
1150         struct fc_lport *lport = vport->dd_data;
1151
1152         if (disable) {
1153                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1154                 fc_fabric_logoff(lport);
1155         } else {
1156                 lport->boot_time = jiffies;
1157                 fc_fabric_login(lport);
1158                 fc_vport_setlink(lport);
1159         }
1160         return 0;
1161 }
1162
1163
1164 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1165 {
1166         struct net_device *netdev = interface->netdev;
1167         struct net_device *physdev = interface->hba->phys_dev;
1168         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1169         struct netdev_hw_addr *ha;
1170         int sel_san_mac = 0;
1171
1172         /* setup Source MAC Address */
1173         rcu_read_lock();
1174         for_each_dev_addr(physdev, ha) {
1175                 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1176                                 ha->type);
1177                 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1178                                 ha->addr[1], ha->addr[2], ha->addr[3],
1179                                 ha->addr[4], ha->addr[5]);
1180
1181                 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1182                     (is_valid_ether_addr(ha->addr))) {
1183                         memcpy(ctlr->ctl_src_addr, ha->addr,
1184                                ETH_ALEN);
1185                         sel_san_mac = 1;
1186                         BNX2FC_MISC_DBG("Found SAN MAC\n");
1187                 }
1188         }
1189         rcu_read_unlock();
1190
1191         if (!sel_san_mac)
1192                 return -ENODEV;
1193
1194         interface->fip_packet_type.func = bnx2fc_fip_recv;
1195         interface->fip_packet_type.type = htons(ETH_P_FIP);
1196         interface->fip_packet_type.dev = netdev;
1197         dev_add_pack(&interface->fip_packet_type);
1198
1199         interface->fcoe_packet_type.func = bnx2fc_rcv;
1200         interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1201         interface->fcoe_packet_type.dev = netdev;
1202         dev_add_pack(&interface->fcoe_packet_type);
1203
1204         return 0;
1205 }
1206
1207 static int bnx2fc_attach_transport(void)
1208 {
1209         bnx2fc_transport_template =
1210                 fc_attach_transport(&bnx2fc_transport_function);
1211
1212         if (bnx2fc_transport_template == NULL) {
1213                 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1214                 return -ENODEV;
1215         }
1216
1217         bnx2fc_vport_xport_template =
1218                 fc_attach_transport(&bnx2fc_vport_xport_function);
1219         if (bnx2fc_vport_xport_template == NULL) {
1220                 printk(KERN_ERR PFX
1221                        "Failed to attach FC transport for vport\n");
1222                 fc_release_transport(bnx2fc_transport_template);
1223                 bnx2fc_transport_template = NULL;
1224                 return -ENODEV;
1225         }
1226         return 0;
1227 }
1228 static void bnx2fc_release_transport(void)
1229 {
1230         fc_release_transport(bnx2fc_transport_template);
1231         fc_release_transport(bnx2fc_vport_xport_template);
1232         bnx2fc_transport_template = NULL;
1233         bnx2fc_vport_xport_template = NULL;
1234 }
1235
1236 static void bnx2fc_interface_release(struct kref *kref)
1237 {
1238         struct bnx2fc_interface *interface;
1239         struct fcoe_ctlr *ctlr;
1240         struct net_device *netdev;
1241
1242         interface = container_of(kref, struct bnx2fc_interface, kref);
1243         BNX2FC_MISC_DBG("Interface is being released\n");
1244
1245         ctlr = bnx2fc_to_ctlr(interface);
1246         netdev = interface->netdev;
1247
1248         /* tear-down FIP controller */
1249         if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1250                 fcoe_ctlr_destroy(ctlr);
1251
1252         kfree(ctlr);
1253
1254         dev_put(netdev);
1255         module_put(THIS_MODULE);
1256 }
1257
1258 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1259 {
1260         kref_get(&interface->kref);
1261 }
1262
1263 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1264 {
1265         kref_put(&interface->kref, bnx2fc_interface_release);
1266 }
1267 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1268 {
1269         /* Free the command manager */
1270         if (hba->cmd_mgr) {
1271                 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1272                 hba->cmd_mgr = NULL;
1273         }
1274         kfree(hba->tgt_ofld_list);
1275         bnx2fc_unbind_pcidev(hba);
1276         kfree(hba);
1277 }
1278
1279 /**
1280  * bnx2fc_hba_create - create a new bnx2fc hba
1281  *
1282  * @cnic:       pointer to cnic device
1283  *
1284  * Creates a new FCoE hba on the given device.
1285  *
1286  */
1287 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1288 {
1289         struct bnx2fc_hba *hba;
1290         int rc;
1291
1292         hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1293         if (!hba) {
1294                 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1295                 return NULL;
1296         }
1297         spin_lock_init(&hba->hba_lock);
1298         mutex_init(&hba->hba_mutex);
1299
1300         hba->cnic = cnic;
1301         rc = bnx2fc_bind_pcidev(hba);
1302         if (rc) {
1303                 printk(KERN_ERR PFX "create_adapter:  bind error\n");
1304                 goto bind_err;
1305         }
1306         hba->phys_dev = cnic->netdev;
1307         hba->next_conn_id = 0;
1308
1309         hba->tgt_ofld_list =
1310                 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1311                         GFP_KERNEL);
1312         if (!hba->tgt_ofld_list) {
1313                 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1314                 goto tgtofld_err;
1315         }
1316
1317         hba->num_ofld_sess = 0;
1318
1319         hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID,
1320                                                 BNX2FC_MAX_XID);
1321         if (!hba->cmd_mgr) {
1322                 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1323                 goto cmgr_err;
1324         }
1325
1326         init_waitqueue_head(&hba->shutdown_wait);
1327         init_waitqueue_head(&hba->destroy_wait);
1328         INIT_LIST_HEAD(&hba->vports);
1329
1330         return hba;
1331
1332 cmgr_err:
1333         kfree(hba->tgt_ofld_list);
1334 tgtofld_err:
1335         bnx2fc_unbind_pcidev(hba);
1336 bind_err:
1337         kfree(hba);
1338         return NULL;
1339 }
1340
1341 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1342                                       struct net_device *netdev,
1343                                       enum fip_state fip_mode)
1344 {
1345         struct bnx2fc_interface *interface;
1346         struct fcoe_ctlr *ctlr;
1347         int size;
1348         int rc = 0;
1349
1350         size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1351         ctlr = kzalloc(size, GFP_KERNEL);
1352         if (!ctlr) {
1353                 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1354                 return NULL;
1355         }
1356         interface = fcoe_ctlr_priv(ctlr);
1357         dev_hold(netdev);
1358         kref_init(&interface->kref);
1359         interface->hba = hba;
1360         interface->netdev = netdev;
1361
1362         /* Initialize FIP */
1363         fcoe_ctlr_init(ctlr, fip_mode);
1364         ctlr->send = bnx2fc_fip_send;
1365         ctlr->update_mac = bnx2fc_update_src_mac;
1366         ctlr->get_src_addr = bnx2fc_get_src_mac;
1367         set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1368
1369         rc = bnx2fc_interface_setup(interface);
1370         if (!rc)
1371                 return interface;
1372
1373         fcoe_ctlr_destroy(ctlr);
1374         dev_put(netdev);
1375         kfree(ctlr);
1376         return NULL;
1377 }
1378
1379 /**
1380  * bnx2fc_if_create - Create FCoE instance on a given interface
1381  *
1382  * @interface:  FCoE interface to create a local port on
1383  * @parent:     Device pointer to be the parent in sysfs for the SCSI host
1384  * @npiv:       Indicates if the port is vport or not
1385  *
1386  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1387  *
1388  * Returns:     Allocated fc_lport or an error pointer
1389  */
1390 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1391                                   struct device *parent, int npiv)
1392 {
1393         struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1394         struct fc_lport         *lport, *n_port;
1395         struct fcoe_port        *port;
1396         struct Scsi_Host        *shost;
1397         struct fc_vport         *vport = dev_to_vport(parent);
1398         struct bnx2fc_lport     *blport;
1399         struct bnx2fc_hba       *hba;
1400         int                     rc = 0;
1401
1402         blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1403         if (!blport) {
1404                 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1405                 return NULL;
1406         }
1407
1408         /* Allocate Scsi_Host structure */
1409         if (!npiv)
1410                 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1411         else
1412                 lport = libfc_vport_create(vport, sizeof(*port));
1413
1414         if (!lport) {
1415                 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1416                 goto free_blport;
1417         }
1418         shost = lport->host;
1419         port = lport_priv(lport);
1420         port->lport = lport;
1421         port->priv = interface;
1422         INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1423
1424         /* Configure fcoe_port */
1425         rc = bnx2fc_lport_config(lport);
1426         if (rc)
1427                 goto lp_config_err;
1428
1429         if (npiv) {
1430                 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1431                         vport->node_name, vport->port_name);
1432                 fc_set_wwnn(lport, vport->node_name);
1433                 fc_set_wwpn(lport, vport->port_name);
1434         }
1435         /* Configure netdev and networking properties of the lport */
1436         rc = bnx2fc_net_config(lport, interface->netdev);
1437         if (rc) {
1438                 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1439                 goto lp_config_err;
1440         }
1441
1442         rc = bnx2fc_shost_config(lport, parent);
1443         if (rc) {
1444                 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1445                         interface->netdev->name);
1446                 goto lp_config_err;
1447         }
1448
1449         /* Initialize the libfc library */
1450         rc = bnx2fc_libfc_config(lport);
1451         if (rc) {
1452                 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1453                 goto shost_err;
1454         }
1455         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1456
1457         /* Allocate exchange manager */
1458         if (!npiv)
1459                 rc = bnx2fc_em_config(lport);
1460         else {
1461                 shost = vport_to_shost(vport);
1462                 n_port = shost_priv(shost);
1463                 rc = fc_exch_mgr_list_clone(n_port, lport);
1464         }
1465
1466         if (rc) {
1467                 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1468                 goto shost_err;
1469         }
1470
1471         bnx2fc_interface_get(interface);
1472
1473         hba = interface->hba;
1474         spin_lock_bh(&hba->hba_lock);
1475         blport->lport = lport;
1476         list_add_tail(&blport->list, &hba->vports);
1477         spin_unlock_bh(&hba->hba_lock);
1478
1479         return lport;
1480
1481 shost_err:
1482         scsi_remove_host(shost);
1483 lp_config_err:
1484         scsi_host_put(lport->host);
1485 free_blport:
1486         kfree(blport);
1487         return NULL;
1488 }
1489
1490 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1491 {
1492         /* Dont listen for Ethernet packets anymore */
1493         __dev_remove_pack(&interface->fcoe_packet_type);
1494         __dev_remove_pack(&interface->fip_packet_type);
1495         synchronize_net();
1496 }
1497
1498 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1499 {
1500         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1501         struct fc_lport *lport = ctlr->lp;
1502         struct fcoe_port *port = lport_priv(lport);
1503         struct bnx2fc_hba *hba = interface->hba;
1504
1505         /* Stop the transmit retry timer */
1506         del_timer_sync(&port->timer);
1507
1508         /* Free existing transmit skbs */
1509         fcoe_clean_pending_queue(lport);
1510
1511         bnx2fc_net_cleanup(interface);
1512
1513         bnx2fc_free_vport(hba, lport);
1514 }
1515
1516 static void bnx2fc_if_destroy(struct fc_lport *lport)
1517 {
1518
1519         /* Free queued packets for the receive thread */
1520         bnx2fc_clean_rx_queue(lport);
1521
1522         /* Detach from scsi-ml */
1523         fc_remove_host(lport->host);
1524         scsi_remove_host(lport->host);
1525
1526         /*
1527          * Note that only the physical lport will have the exchange manager.
1528          * for vports, this function is NOP
1529          */
1530         fc_exch_mgr_free(lport);
1531
1532         /* Free memory used by statistical counters */
1533         fc_lport_free_stats(lport);
1534
1535         /* Release Scsi_Host */
1536         scsi_host_put(lport->host);
1537 }
1538
1539 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1540 {
1541         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1542         struct fc_lport *lport = ctlr->lp;
1543         struct fcoe_port *port = lport_priv(lport);
1544
1545         bnx2fc_interface_cleanup(interface);
1546         bnx2fc_stop(interface);
1547         list_del(&interface->list);
1548         bnx2fc_interface_put(interface);
1549         queue_work(bnx2fc_wq, &port->destroy_work);
1550 }
1551
1552 /**
1553  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1554  *
1555  * @buffer: The name of the Ethernet interface to be destroyed
1556  * @kp:     The associated kernel parameter
1557  *
1558  * Called from sysfs.
1559  *
1560  * Returns: 0 for success
1561  */
1562 static int bnx2fc_destroy(struct net_device *netdev)
1563 {
1564         struct bnx2fc_interface *interface = NULL;
1565         struct workqueue_struct *timer_work_queue;
1566         struct fcoe_ctlr *ctlr;
1567         int rc = 0;
1568
1569         rtnl_lock();
1570         mutex_lock(&bnx2fc_dev_lock);
1571
1572         interface = bnx2fc_interface_lookup(netdev);
1573         ctlr = bnx2fc_to_ctlr(interface);
1574         if (!interface || !ctlr->lp) {
1575                 rc = -ENODEV;
1576                 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1577                 goto netdev_err;
1578         }
1579
1580         timer_work_queue = interface->timer_work_queue;
1581         __bnx2fc_destroy(interface);
1582         destroy_workqueue(timer_work_queue);
1583
1584 netdev_err:
1585         mutex_unlock(&bnx2fc_dev_lock);
1586         rtnl_unlock();
1587         return rc;
1588 }
1589
1590 static void bnx2fc_destroy_work(struct work_struct *work)
1591 {
1592         struct fcoe_port *port;
1593         struct fc_lport *lport;
1594
1595         port = container_of(work, struct fcoe_port, destroy_work);
1596         lport = port->lport;
1597
1598         BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1599
1600         bnx2fc_if_destroy(lport);
1601 }
1602
1603 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1604 {
1605         bnx2fc_free_fw_resc(hba);
1606         bnx2fc_free_task_ctx(hba);
1607 }
1608
1609 /**
1610  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1611  *                      pci structure
1612  *
1613  * @hba:                Adapter instance
1614  */
1615 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1616 {
1617         if (bnx2fc_setup_task_ctx(hba))
1618                 goto mem_err;
1619
1620         if (bnx2fc_setup_fw_resc(hba))
1621                 goto mem_err;
1622
1623         return 0;
1624 mem_err:
1625         bnx2fc_unbind_adapter_devices(hba);
1626         return -ENOMEM;
1627 }
1628
1629 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1630 {
1631         struct cnic_dev *cnic;
1632
1633         if (!hba->cnic) {
1634                 printk(KERN_ERR PFX "cnic is NULL\n");
1635                 return -ENODEV;
1636         }
1637         cnic = hba->cnic;
1638         hba->pcidev = cnic->pcidev;
1639         if (hba->pcidev)
1640                 pci_dev_get(hba->pcidev);
1641
1642         return 0;
1643 }
1644
1645 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1646 {
1647         if (hba->pcidev)
1648                 pci_dev_put(hba->pcidev);
1649         hba->pcidev = NULL;
1650 }
1651
1652
1653
1654 /**
1655  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1656  *
1657  * @handle:     transport handle pointing to adapter struture
1658  *
1659  * This function maps adapter structure to pcidev structure and initiates
1660  *      firmware handshake to enable/initialize on-chip FCoE components.
1661  *      This bnx2fc - cnic interface api callback is used after following
1662  *      conditions are met -
1663  *      a) underlying network interface is up (marked by event NETDEV_UP
1664  *              from netdev
1665  *      b) bnx2fc adatper structure is registered.
1666  */
1667 static void bnx2fc_ulp_start(void *handle)
1668 {
1669         struct bnx2fc_hba *hba = handle;
1670         struct bnx2fc_interface *interface;
1671         struct fcoe_ctlr *ctlr;
1672         struct fc_lport *lport;
1673
1674         mutex_lock(&bnx2fc_dev_lock);
1675
1676         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1677                 bnx2fc_fw_init(hba);
1678
1679         BNX2FC_MISC_DBG("bnx2fc started.\n");
1680
1681         list_for_each_entry(interface, &if_list, list) {
1682                 if (interface->hba == hba) {
1683                         ctlr = bnx2fc_to_ctlr(interface);
1684                         lport = ctlr->lp;
1685                         /* Kick off Fabric discovery*/
1686                         printk(KERN_ERR PFX "ulp_init: start discovery\n");
1687                         lport->tt.frame_send = bnx2fc_xmit;
1688                         bnx2fc_start_disc(interface);
1689                 }
1690         }
1691
1692         mutex_unlock(&bnx2fc_dev_lock);
1693 }
1694
1695 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1696 {
1697         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1698         fc_fabric_logoff(lport);
1699         fc_lport_destroy(lport);
1700 }
1701
1702 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1703 {
1704         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1705         struct fc_lport *lport;
1706         struct fc_lport *vport;
1707
1708         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1709                 return;
1710
1711         lport = ctlr->lp;
1712         bnx2fc_port_shutdown(lport);
1713
1714         mutex_lock(&lport->lp_mutex);
1715         list_for_each_entry(vport, &lport->vports, list)
1716                 fc_host_port_type(vport->host) =
1717                                         FC_PORTTYPE_UNKNOWN;
1718         mutex_unlock(&lport->lp_mutex);
1719         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1720         fcoe_ctlr_link_down(ctlr);
1721         fcoe_clean_pending_queue(lport);
1722 }
1723
1724 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1725 {
1726 #define BNX2FC_INIT_POLL_TIME           (1000 / HZ)
1727         int rc = -1;
1728         int i = HZ;
1729
1730         rc = bnx2fc_bind_adapter_devices(hba);
1731         if (rc) {
1732                 printk(KERN_ALERT PFX
1733                         "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1734                 goto err_out;
1735         }
1736
1737         rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1738         if (rc) {
1739                 printk(KERN_ALERT PFX
1740                         "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1741                 goto err_unbind;
1742         }
1743
1744         /*
1745          * Wait until the adapter init message is complete, and adapter
1746          * state is UP.
1747          */
1748         while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1749                 msleep(BNX2FC_INIT_POLL_TIME);
1750
1751         if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1752                 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1753                                 "Ignoring...\n",
1754                                 hba->cnic->netdev->name);
1755                 rc = -1;
1756                 goto err_unbind;
1757         }
1758
1759
1760         set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1761         return 0;
1762
1763 err_unbind:
1764         bnx2fc_unbind_adapter_devices(hba);
1765 err_out:
1766         return rc;
1767 }
1768
1769 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1770 {
1771         if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1772                 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1773                         init_timer(&hba->destroy_timer);
1774                         hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1775                                                                 jiffies;
1776                         hba->destroy_timer.function = bnx2fc_destroy_timer;
1777                         hba->destroy_timer.data = (unsigned long)hba;
1778                         add_timer(&hba->destroy_timer);
1779                         wait_event_interruptible(hba->destroy_wait,
1780                                         test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1781                                                  &hba->flags));
1782                         clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1783                         /* This should never happen */
1784                         if (signal_pending(current))
1785                                 flush_signals(current);
1786
1787                         del_timer_sync(&hba->destroy_timer);
1788                 }
1789                 bnx2fc_unbind_adapter_devices(hba);
1790         }
1791 }
1792
1793 /**
1794  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1795  *
1796  * @handle:     transport handle pointing to adapter structure
1797  *
1798  * Driver checks if adapter is already in shutdown mode, if not start
1799  *      the shutdown process.
1800  */
1801 static void bnx2fc_ulp_stop(void *handle)
1802 {
1803         struct bnx2fc_hba *hba = handle;
1804         struct bnx2fc_interface *interface;
1805
1806         printk(KERN_ERR "ULP_STOP\n");
1807
1808         mutex_lock(&bnx2fc_dev_lock);
1809         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1810                 goto exit;
1811         list_for_each_entry(interface, &if_list, list) {
1812                 if (interface->hba == hba)
1813                         bnx2fc_stop(interface);
1814         }
1815         BUG_ON(hba->num_ofld_sess != 0);
1816
1817         mutex_lock(&hba->hba_mutex);
1818         clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1819         clear_bit(ADAPTER_STATE_GOING_DOWN,
1820                   &hba->adapter_state);
1821
1822         clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1823         mutex_unlock(&hba->hba_mutex);
1824
1825         bnx2fc_fw_destroy(hba);
1826 exit:
1827         mutex_unlock(&bnx2fc_dev_lock);
1828 }
1829
1830 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1831 {
1832         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1833         struct fc_lport *lport;
1834         int wait_cnt = 0;
1835
1836         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1837         /* Kick off FIP/FLOGI */
1838         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1839                 printk(KERN_ERR PFX "Init not done yet\n");
1840                 return;
1841         }
1842
1843         lport = ctlr->lp;
1844         BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1845
1846         if (!bnx2fc_link_ok(lport) && interface->enabled) {
1847                 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1848                 fcoe_ctlr_link_up(ctlr);
1849                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1850                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1851         }
1852
1853         /* wait for the FCF to be selected before issuing FLOGI */
1854         while (!ctlr->sel_fcf) {
1855                 msleep(250);
1856                 /* give up after 3 secs */
1857                 if (++wait_cnt > 12)
1858                         break;
1859         }
1860
1861         /* Reset max receive frame size to default */
1862         if (fc_set_mfs(lport, BNX2FC_MFS))
1863                 return;
1864
1865         fc_lport_init(lport);
1866         fc_fabric_login(lport);
1867 }
1868
1869
1870 /**
1871  * bnx2fc_ulp_init - Initialize an adapter instance
1872  *
1873  * @dev :       cnic device handle
1874  * Called from cnic_register_driver() context to initialize all
1875  *      enumerated cnic devices. This routine allocates adapter structure
1876  *      and other device specific resources.
1877  */
1878 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1879 {
1880         struct bnx2fc_hba *hba;
1881         int rc = 0;
1882
1883         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1884         /* bnx2fc works only when bnx2x is loaded */
1885         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1886             (dev->max_fcoe_conn == 0)) {
1887                 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1888                                     " flags: %lx fcoe_conn: %d\n",
1889                         dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1890                 return;
1891         }
1892
1893         hba = bnx2fc_hba_create(dev);
1894         if (!hba) {
1895                 printk(KERN_ERR PFX "hba initialization failed\n");
1896                 return;
1897         }
1898
1899         /* Add HBA to the adapter list */
1900         mutex_lock(&bnx2fc_dev_lock);
1901         list_add_tail(&hba->list, &adapter_list);
1902         adapter_count++;
1903         mutex_unlock(&bnx2fc_dev_lock);
1904
1905         clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1906         rc = dev->register_device(dev, CNIC_ULP_FCOE,
1907                                                 (void *) hba);
1908         if (rc)
1909                 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
1910         else
1911                 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1912 }
1913
1914
1915 static int bnx2fc_disable(struct net_device *netdev)
1916 {
1917         struct bnx2fc_interface *interface;
1918         struct fcoe_ctlr *ctlr;
1919         int rc = 0;
1920
1921         rtnl_lock();
1922         mutex_lock(&bnx2fc_dev_lock);
1923
1924         interface = bnx2fc_interface_lookup(netdev);
1925         ctlr = bnx2fc_to_ctlr(interface);
1926         if (!interface || !ctlr->lp) {
1927                 rc = -ENODEV;
1928                 printk(KERN_ERR PFX "bnx2fc_disable: interface or lport not found\n");
1929         } else {
1930                 interface->enabled = false;
1931                 fcoe_ctlr_link_down(ctlr);
1932                 fcoe_clean_pending_queue(ctlr->lp);
1933         }
1934
1935         mutex_unlock(&bnx2fc_dev_lock);
1936         rtnl_unlock();
1937         return rc;
1938 }
1939
1940
1941 static int bnx2fc_enable(struct net_device *netdev)
1942 {
1943         struct bnx2fc_interface *interface;
1944         struct fcoe_ctlr *ctlr;
1945         int rc = 0;
1946
1947         rtnl_lock();
1948         mutex_lock(&bnx2fc_dev_lock);
1949
1950         interface = bnx2fc_interface_lookup(netdev);
1951         ctlr = bnx2fc_to_ctlr(interface);
1952         if (!interface || !ctlr->lp) {
1953                 rc = -ENODEV;
1954                 printk(KERN_ERR PFX "bnx2fc_enable: interface or lport not found\n");
1955         } else if (!bnx2fc_link_ok(ctlr->lp)) {
1956                 fcoe_ctlr_link_up(ctlr);
1957                 interface->enabled = true;
1958         }
1959
1960         mutex_unlock(&bnx2fc_dev_lock);
1961         rtnl_unlock();
1962         return rc;
1963 }
1964
1965 /**
1966  * bnx2fc_create - Create bnx2fc FCoE interface
1967  *
1968  * @buffer: The name of Ethernet interface to create on
1969  * @kp:     The associated kernel param
1970  *
1971  * Called from sysfs.
1972  *
1973  * Returns: 0 for success
1974  */
1975 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
1976 {
1977         struct fcoe_ctlr *ctlr;
1978         struct bnx2fc_interface *interface;
1979         struct bnx2fc_hba *hba;
1980         struct net_device *phys_dev;
1981         struct fc_lport *lport;
1982         struct ethtool_drvinfo drvinfo;
1983         int rc = 0;
1984         int vlan_id;
1985
1986         BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
1987         if (fip_mode != FIP_MODE_FABRIC) {
1988                 printk(KERN_ERR "fip mode not FABRIC\n");
1989                 return -EIO;
1990         }
1991
1992         rtnl_lock();
1993
1994         mutex_lock(&bnx2fc_dev_lock);
1995
1996         if (!try_module_get(THIS_MODULE)) {
1997                 rc = -EINVAL;
1998                 goto mod_err;
1999         }
2000
2001         /* obtain physical netdev */
2002         if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2003                 phys_dev = vlan_dev_real_dev(netdev);
2004                 vlan_id = vlan_dev_vlan_id(netdev);
2005         } else {
2006                 printk(KERN_ERR PFX "Not a vlan device\n");
2007                 rc = -EINVAL;
2008                 goto netdev_err;
2009         }
2010         /* verify if the physical device is a netxtreme2 device */
2011         if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2012                 memset(&drvinfo, 0, sizeof(drvinfo));
2013                 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2014                 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2015                         printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2016                         rc = -EINVAL;
2017                         goto netdev_err;
2018                 }
2019         } else {
2020                 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2021                 rc = -EINVAL;
2022                 goto netdev_err;
2023         }
2024
2025         /* obtain interface and initialize rest of the structure */
2026         hba = bnx2fc_hba_lookup(phys_dev);
2027         if (!hba) {
2028                 rc = -ENODEV;
2029                 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2030                 goto netdev_err;
2031         }
2032
2033         if (bnx2fc_interface_lookup(netdev)) {
2034                 rc = -EEXIST;
2035                 goto netdev_err;
2036         }
2037
2038         interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2039         if (!interface) {
2040                 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2041                 goto ifput_err;
2042         }
2043
2044         ctlr = bnx2fc_to_ctlr(interface);
2045         interface->vlan_id = vlan_id;
2046         interface->vlan_enabled = 1;
2047
2048         interface->timer_work_queue =
2049                         create_singlethread_workqueue("bnx2fc_timer_wq");
2050         if (!interface->timer_work_queue) {
2051                 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2052                 rc = -EINVAL;
2053                 goto ifput_err;
2054         }
2055
2056         lport = bnx2fc_if_create(interface, &interface->hba->pcidev->dev, 0);
2057         if (!lport) {
2058                 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2059                         netdev->name);
2060                 rc = -EINVAL;
2061                 goto if_create_err;
2062         }
2063
2064         /* Add interface to if_list */
2065         list_add_tail(&interface->list, &if_list);
2066
2067         lport->boot_time = jiffies;
2068
2069         /* Make this master N_port */
2070         ctlr->lp = lport;
2071
2072         if (!bnx2fc_link_ok(lport)) {
2073                 fcoe_ctlr_link_up(ctlr);
2074                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2075                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2076         }
2077
2078         BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2079         bnx2fc_start_disc(interface);
2080         interface->enabled = true;
2081         /*
2082          * Release from kref_init in bnx2fc_interface_setup, on success
2083          * lport should be holding a reference taken in bnx2fc_if_create
2084          */
2085         bnx2fc_interface_put(interface);
2086         /* put netdev that was held while calling dev_get_by_name */
2087         mutex_unlock(&bnx2fc_dev_lock);
2088         rtnl_unlock();
2089         return 0;
2090
2091 if_create_err:
2092         destroy_workqueue(interface->timer_work_queue);
2093 ifput_err:
2094         bnx2fc_net_cleanup(interface);
2095         bnx2fc_interface_put(interface);
2096         goto mod_err;
2097 netdev_err:
2098         module_put(THIS_MODULE);
2099 mod_err:
2100         mutex_unlock(&bnx2fc_dev_lock);
2101         rtnl_unlock();
2102         return rc;
2103 }
2104
2105 /**
2106  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2107  *
2108  * @cnic:       Pointer to cnic device instance
2109  *
2110  **/
2111 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2112 {
2113         struct list_head *list;
2114         struct list_head *temp;
2115         struct bnx2fc_hba *hba;
2116
2117         /* Called with bnx2fc_dev_lock held */
2118         list_for_each_safe(list, temp, &adapter_list) {
2119                 hba = (struct bnx2fc_hba *)list;
2120                 if (hba->cnic == cnic)
2121                         return hba;
2122         }
2123         return NULL;
2124 }
2125
2126 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2127                                                         *netdev)
2128 {
2129         struct bnx2fc_interface *interface;
2130
2131         /* Called with bnx2fc_dev_lock held */
2132         list_for_each_entry(interface, &if_list, list) {
2133                 if (interface->netdev == netdev)
2134                         return interface;
2135         }
2136         return NULL;
2137 }
2138
2139 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2140                                                       *phys_dev)
2141 {
2142         struct bnx2fc_hba *hba;
2143
2144         /* Called with bnx2fc_dev_lock held */
2145         list_for_each_entry(hba, &adapter_list, list) {
2146                 if (hba->phys_dev == phys_dev)
2147                         return hba;
2148         }
2149         printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2150         return NULL;
2151 }
2152
2153 /**
2154  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2155  *
2156  * @dev         cnic device handle
2157  */
2158 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2159 {
2160         struct bnx2fc_hba *hba;
2161         struct bnx2fc_interface *interface, *tmp;
2162
2163         BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2164
2165         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2166                 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2167                         dev->netdev->name, dev->flags);
2168                 return;
2169         }
2170
2171         mutex_lock(&bnx2fc_dev_lock);
2172         hba = bnx2fc_find_hba_for_cnic(dev);
2173         if (!hba) {
2174                 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2175                        dev);
2176                 mutex_unlock(&bnx2fc_dev_lock);
2177                 return;
2178         }
2179
2180         list_del_init(&hba->list);
2181         adapter_count--;
2182
2183         list_for_each_entry_safe(interface, tmp, &if_list, list)
2184                 /* destroy not called yet, move to quiesced list */
2185                 if (interface->hba == hba)
2186                         __bnx2fc_destroy(interface);
2187         mutex_unlock(&bnx2fc_dev_lock);
2188
2189         bnx2fc_ulp_stop(hba);
2190         /* unregister cnic device */
2191         if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2192                 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2193         bnx2fc_hba_destroy(hba);
2194 }
2195
2196 /**
2197  * bnx2fc_fcoe_reset - Resets the fcoe
2198  *
2199  * @shost: shost the reset is from
2200  *
2201  * Returns: always 0
2202  */
2203 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2204 {
2205         struct fc_lport *lport = shost_priv(shost);
2206         fc_lport_reset(lport);
2207         return 0;
2208 }
2209
2210
2211 static bool bnx2fc_match(struct net_device *netdev)
2212 {
2213         mutex_lock(&bnx2fc_dev_lock);
2214         if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2215                 struct net_device *phys_dev = vlan_dev_real_dev(netdev);
2216
2217                 if (bnx2fc_hba_lookup(phys_dev)) {
2218                         mutex_unlock(&bnx2fc_dev_lock);
2219                         return true;
2220                 }
2221         }
2222         mutex_unlock(&bnx2fc_dev_lock);
2223         return false;
2224 }
2225
2226
2227 static struct fcoe_transport bnx2fc_transport = {
2228         .name = {"bnx2fc"},
2229         .attached = false,
2230         .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2231         .match = bnx2fc_match,
2232         .create = bnx2fc_create,
2233         .destroy = bnx2fc_destroy,
2234         .enable = bnx2fc_enable,
2235         .disable = bnx2fc_disable,
2236 };
2237
2238 /**
2239  * bnx2fc_percpu_thread_create - Create a receive thread for an
2240  *                               online CPU
2241  *
2242  * @cpu: cpu index for the online cpu
2243  */
2244 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2245 {
2246         struct bnx2fc_percpu_s *p;
2247         struct task_struct *thread;
2248
2249         p = &per_cpu(bnx2fc_percpu, cpu);
2250
2251         thread = kthread_create(bnx2fc_percpu_io_thread,
2252                                 (void *)p,
2253                                 "bnx2fc_thread/%d", cpu);
2254         /* bind thread to the cpu */
2255         if (likely(!IS_ERR(thread))) {
2256                 kthread_bind(thread, cpu);
2257                 p->iothread = thread;
2258                 wake_up_process(thread);
2259         }
2260 }
2261
2262 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2263 {
2264         struct bnx2fc_percpu_s *p;
2265         struct task_struct *thread;
2266         struct bnx2fc_work *work, *tmp;
2267
2268         BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2269
2270         /* Prevent any new work from being queued for this CPU */
2271         p = &per_cpu(bnx2fc_percpu, cpu);
2272         spin_lock_bh(&p->fp_work_lock);
2273         thread = p->iothread;
2274         p->iothread = NULL;
2275
2276
2277         /* Free all work in the list */
2278         list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2279                 list_del_init(&work->list);
2280                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2281                 kfree(work);
2282         }
2283
2284         spin_unlock_bh(&p->fp_work_lock);
2285
2286         if (thread)
2287                 kthread_stop(thread);
2288 }
2289
2290 /**
2291  * bnx2fc_cpu_callback - Handler for CPU hotplug events
2292  *
2293  * @nfb:    The callback data block
2294  * @action: The event triggering the callback
2295  * @hcpu:   The index of the CPU that the event is for
2296  *
2297  * This creates or destroys per-CPU data for fcoe
2298  *
2299  * Returns NOTIFY_OK always.
2300  */
2301 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2302                              unsigned long action, void *hcpu)
2303 {
2304         unsigned cpu = (unsigned long)hcpu;
2305
2306         switch (action) {
2307         case CPU_ONLINE:
2308         case CPU_ONLINE_FROZEN:
2309                 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2310                 bnx2fc_percpu_thread_create(cpu);
2311                 break;
2312         case CPU_DEAD:
2313         case CPU_DEAD_FROZEN:
2314                 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2315                 bnx2fc_percpu_thread_destroy(cpu);
2316                 break;
2317         default:
2318                 break;
2319         }
2320         return NOTIFY_OK;
2321 }
2322
2323 /**
2324  * bnx2fc_mod_init - module init entry point
2325  *
2326  * Initialize driver wide global data structures, and register
2327  * with cnic module
2328  **/
2329 static int __init bnx2fc_mod_init(void)
2330 {
2331         struct fcoe_percpu_s *bg;
2332         struct task_struct *l2_thread;
2333         int rc = 0;
2334         unsigned int cpu = 0;
2335         struct bnx2fc_percpu_s *p;
2336
2337         printk(KERN_INFO PFX "%s", version);
2338
2339         /* register as a fcoe transport */
2340         rc = fcoe_transport_attach(&bnx2fc_transport);
2341         if (rc) {
2342                 printk(KERN_ERR "failed to register an fcoe transport, check "
2343                         "if libfcoe is loaded\n");
2344                 goto out;
2345         }
2346
2347         INIT_LIST_HEAD(&adapter_list);
2348         INIT_LIST_HEAD(&if_list);
2349         mutex_init(&bnx2fc_dev_lock);
2350         adapter_count = 0;
2351
2352         /* Attach FC transport template */
2353         rc = bnx2fc_attach_transport();
2354         if (rc)
2355                 goto detach_ft;
2356
2357         bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2358         if (!bnx2fc_wq) {
2359                 rc = -ENOMEM;
2360                 goto release_bt;
2361         }
2362
2363         bg = &bnx2fc_global;
2364         skb_queue_head_init(&bg->fcoe_rx_list);
2365         l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2366                                    (void *)bg,
2367                                    "bnx2fc_l2_thread");
2368         if (IS_ERR(l2_thread)) {
2369                 rc = PTR_ERR(l2_thread);
2370                 goto free_wq;
2371         }
2372         wake_up_process(l2_thread);
2373         spin_lock_bh(&bg->fcoe_rx_list.lock);
2374         bg->thread = l2_thread;
2375         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2376
2377         for_each_possible_cpu(cpu) {
2378                 p = &per_cpu(bnx2fc_percpu, cpu);
2379                 INIT_LIST_HEAD(&p->work_list);
2380                 spin_lock_init(&p->fp_work_lock);
2381         }
2382
2383         for_each_online_cpu(cpu) {
2384                 bnx2fc_percpu_thread_create(cpu);
2385         }
2386
2387         /* Initialize per CPU interrupt thread */
2388         register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2389
2390         cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2391
2392         return 0;
2393
2394 free_wq:
2395         destroy_workqueue(bnx2fc_wq);
2396 release_bt:
2397         bnx2fc_release_transport();
2398 detach_ft:
2399         fcoe_transport_detach(&bnx2fc_transport);
2400 out:
2401         return rc;
2402 }
2403
2404 static void __exit bnx2fc_mod_exit(void)
2405 {
2406         LIST_HEAD(to_be_deleted);
2407         struct bnx2fc_hba *hba, *next;
2408         struct fcoe_percpu_s *bg;
2409         struct task_struct *l2_thread;
2410         struct sk_buff *skb;
2411         unsigned int cpu = 0;
2412
2413         /*
2414          * NOTE: Since cnic calls register_driver routine rtnl_lock,
2415          * it will have higher precedence than bnx2fc_dev_lock.
2416          * unregister_device() cannot be called with bnx2fc_dev_lock
2417          * held.
2418          */
2419         mutex_lock(&bnx2fc_dev_lock);
2420         list_splice(&adapter_list, &to_be_deleted);
2421         INIT_LIST_HEAD(&adapter_list);
2422         adapter_count = 0;
2423         mutex_unlock(&bnx2fc_dev_lock);
2424
2425         /* Unregister with cnic */
2426         list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2427                 list_del_init(&hba->list);
2428                 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2429                        hba);
2430                 bnx2fc_ulp_stop(hba);
2431                 /* unregister cnic device */
2432                 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2433                                        &hba->reg_with_cnic))
2434                         hba->cnic->unregister_device(hba->cnic,
2435                                                          CNIC_ULP_FCOE);
2436                 bnx2fc_hba_destroy(hba);
2437         }
2438         cnic_unregister_driver(CNIC_ULP_FCOE);
2439
2440         /* Destroy global thread */
2441         bg = &bnx2fc_global;
2442         spin_lock_bh(&bg->fcoe_rx_list.lock);
2443         l2_thread = bg->thread;
2444         bg->thread = NULL;
2445         while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2446                 kfree_skb(skb);
2447
2448         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2449
2450         if (l2_thread)
2451                 kthread_stop(l2_thread);
2452
2453         unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2454
2455         /* Destroy per cpu threads */
2456         for_each_online_cpu(cpu) {
2457                 bnx2fc_percpu_thread_destroy(cpu);
2458         }
2459
2460         destroy_workqueue(bnx2fc_wq);
2461         /*
2462          * detach from scsi transport
2463          * must happen after all destroys are done
2464          */
2465         bnx2fc_release_transport();
2466
2467         /* detach from fcoe transport */
2468         fcoe_transport_detach(&bnx2fc_transport);
2469 }
2470
2471 module_init(bnx2fc_mod_init);
2472 module_exit(bnx2fc_mod_exit);
2473
2474 static struct fc_function_template bnx2fc_transport_function = {
2475         .show_host_node_name = 1,
2476         .show_host_port_name = 1,
2477         .show_host_supported_classes = 1,
2478         .show_host_supported_fc4s = 1,
2479         .show_host_active_fc4s = 1,
2480         .show_host_maxframe_size = 1,
2481
2482         .show_host_port_id = 1,
2483         .show_host_supported_speeds = 1,
2484         .get_host_speed = fc_get_host_speed,
2485         .show_host_speed = 1,
2486         .show_host_port_type = 1,
2487         .get_host_port_state = fc_get_host_port_state,
2488         .show_host_port_state = 1,
2489         .show_host_symbolic_name = 1,
2490
2491         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2492                                 sizeof(struct bnx2fc_rport)),
2493         .show_rport_maxframe_size = 1,
2494         .show_rport_supported_classes = 1,
2495
2496         .show_host_fabric_name = 1,
2497         .show_starget_node_name = 1,
2498         .show_starget_port_name = 1,
2499         .show_starget_port_id = 1,
2500         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2501         .show_rport_dev_loss_tmo = 1,
2502         .get_fc_host_stats = bnx2fc_get_host_stats,
2503
2504         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2505
2506         .terminate_rport_io = fc_rport_terminate_io,
2507
2508         .vport_create = bnx2fc_vport_create,
2509         .vport_delete = bnx2fc_vport_destroy,
2510         .vport_disable = bnx2fc_vport_disable,
2511         .bsg_request = fc_lport_bsg_request,
2512 };
2513
2514 static struct fc_function_template bnx2fc_vport_xport_function = {
2515         .show_host_node_name = 1,
2516         .show_host_port_name = 1,
2517         .show_host_supported_classes = 1,
2518         .show_host_supported_fc4s = 1,
2519         .show_host_active_fc4s = 1,
2520         .show_host_maxframe_size = 1,
2521
2522         .show_host_port_id = 1,
2523         .show_host_supported_speeds = 1,
2524         .get_host_speed = fc_get_host_speed,
2525         .show_host_speed = 1,
2526         .show_host_port_type = 1,
2527         .get_host_port_state = fc_get_host_port_state,
2528         .show_host_port_state = 1,
2529         .show_host_symbolic_name = 1,
2530
2531         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2532                                 sizeof(struct bnx2fc_rport)),
2533         .show_rport_maxframe_size = 1,
2534         .show_rport_supported_classes = 1,
2535
2536         .show_host_fabric_name = 1,
2537         .show_starget_node_name = 1,
2538         .show_starget_port_name = 1,
2539         .show_starget_port_id = 1,
2540         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2541         .show_rport_dev_loss_tmo = 1,
2542         .get_fc_host_stats = fc_get_host_stats,
2543         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2544         .terminate_rport_io = fc_rport_terminate_io,
2545         .bsg_request = fc_lport_bsg_request,
2546 };
2547
2548 /**
2549  * scsi_host_template structure used while registering with SCSI-ml
2550  */
2551 static struct scsi_host_template bnx2fc_shost_template = {
2552         .module                 = THIS_MODULE,
2553         .name                   = "Broadcom Offload FCoE Initiator",
2554         .queuecommand           = bnx2fc_queuecommand,
2555         .eh_abort_handler       = bnx2fc_eh_abort,        /* abts */
2556         .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2557         .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2558         .eh_host_reset_handler  = fc_eh_host_reset,
2559         .slave_alloc            = fc_slave_alloc,
2560         .change_queue_depth     = fc_change_queue_depth,
2561         .change_queue_type      = fc_change_queue_type,
2562         .this_id                = -1,
2563         .cmd_per_lun            = 3,
2564         .can_queue              = BNX2FC_CAN_QUEUE,
2565         .use_clustering         = ENABLE_CLUSTERING,
2566         .sg_tablesize           = BNX2FC_MAX_BDS_PER_CMD,
2567         .max_sectors            = 512,
2568 };
2569
2570 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2571         .frame_send             = bnx2fc_xmit,
2572         .elsct_send             = bnx2fc_elsct_send,
2573         .fcp_abort_io           = bnx2fc_abort_io,
2574         .fcp_cleanup            = bnx2fc_cleanup,
2575         .get_lesb               = bnx2fc_get_lesb,
2576         .rport_event_callback   = bnx2fc_rport_event_handler,
2577 };
2578
2579 /**
2580  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2581  *                      structure carrying callback function pointers
2582  */
2583 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2584         .owner                  = THIS_MODULE,
2585         .cnic_init              = bnx2fc_ulp_init,
2586         .cnic_exit              = bnx2fc_ulp_exit,
2587         .cnic_start             = bnx2fc_ulp_start,
2588         .cnic_stop              = bnx2fc_ulp_stop,
2589         .indicate_kcqes         = bnx2fc_indicate_kcqe,
2590         .indicate_netevent      = bnx2fc_indicate_netevent,
2591 };