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 - 2010 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 u32 adapter_count;
  19 static DEFINE_MUTEX(bnx2fc_dev_lock);
  20 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
  21
  22 #define DRV_MODULE_NAME         "bnx2fc"
  23 #define DRV_MODULE_VERSION      BNX2FC_VERSION
  24 #define DRV_MODULE_RELDATE      "Jan 25, 2011"
  25
  26
  27 static char version[] __devinitdata =
  28                 "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \
  29                 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
  30
  31
  32 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
  33 MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver");
  34 MODULE_LICENSE("GPL");
  35 MODULE_VERSION(DRV_MODULE_VERSION);
  36
  37 #define BNX2FC_MAX_QUEUE_DEPTH  256
  38 #define BNX2FC_MIN_QUEUE_DEPTH  32
  39 #define FCOE_WORD_TO_BYTE  4
  40
  41 static struct scsi_transport_template   *bnx2fc_transport_template;
  42 static struct scsi_transport_template   *bnx2fc_vport_xport_template;
  43
  44 struct workqueue_struct *bnx2fc_wq;
  45
  46 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
  47  * Here the io threads are per cpu but the l2 thread is just one
  48  */
  49 struct fcoe_percpu_s bnx2fc_global;
  50 DEFINE_SPINLOCK(bnx2fc_global_lock);
  51
  52 static struct cnic_ulp_ops bnx2fc_cnic_cb;
  53 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
  54 static struct scsi_host_template bnx2fc_shost_template;
  55 static struct fc_function_template bnx2fc_transport_function;
  56 static struct fc_function_template bnx2fc_vport_xport_function;
  57 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
  58 static int bnx2fc_destroy(struct net_device *net_device);
  59 static int bnx2fc_enable(struct net_device *netdev);
  60 static int bnx2fc_disable(struct net_device *netdev);
  61
  62 static void bnx2fc_recv_frame(struct sk_buff *skb);
  63
  64 static void bnx2fc_start_disc(struct bnx2fc_hba *hba);
  65 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
  66 static int bnx2fc_net_config(struct fc_lport *lp);
  67 static int bnx2fc_lport_config(struct fc_lport *lport);
  68 static int bnx2fc_em_config(struct fc_lport *lport);
  69 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
  70 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
  71 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
  72 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
  73 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_hba *hba,
  74                                   struct device *parent, int npiv);
  75 static void bnx2fc_destroy_work(struct work_struct *work);
  76
  77 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
  78 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
  79
  80 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
  81 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
  82
  83 static void bnx2fc_port_shutdown(struct fc_lport *lport);
  84 static void bnx2fc_stop(struct bnx2fc_hba *hba);
  85 static int __init bnx2fc_mod_init(void);
  86 static void __exit bnx2fc_mod_exit(void);
  87
  88 unsigned int bnx2fc_debug_level;
  89 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
  90
  91 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
  92                              unsigned long action, void *hcpu);
  93 /* notification function for CPU hotplug events */
  94 static struct notifier_block bnx2fc_cpu_notifier = {
  95         .notifier_call = bnx2fc_cpu_callback,
  96 };
  97
  98 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
  99 {
 100         struct fcoe_percpu_s *bg;
 101         struct fcoe_rcv_info *fr;
 102         struct sk_buff_head *list;
 103         struct sk_buff *skb, *next;
 104         struct sk_buff *head;
 105
 106         bg = &bnx2fc_global;
 107         spin_lock_bh(&bg->fcoe_rx_list.lock);
 108         list = &bg->fcoe_rx_list;
 109         head = list->next;
 110         for (skb = head; skb != (struct sk_buff *)list;
 111              skb = next) {
 112                 next = skb->next;
 113                 fr = fcoe_dev_from_skb(skb);
 114                 if (fr->fr_dev == lp) {
 115                         __skb_unlink(skb, list);
 116                         kfree_skb(skb);
 117                 }
 118         }
 119         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 120 }
 121
 122 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 123 {
 124         int rc;
 125         spin_lock(&bnx2fc_global_lock);
 126         rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
 127         spin_unlock(&bnx2fc_global_lock);
 128
 129         return rc;
 130 }
 131
 132 static void bnx2fc_abort_io(struct fc_lport *lport)
 133 {
 134         /*
 135          * This function is no-op for bnx2fc, but we do
 136          * not want to leave it as NULL either, as libfc
 137          * can call the default function which is
 138          * fc_fcp_abort_io.
 139          */
 140 }
 141
 142 static void bnx2fc_cleanup(struct fc_lport *lport)
 143 {
 144         struct fcoe_port *port = lport_priv(lport);
 145         struct bnx2fc_hba *hba = port->priv;
 146         struct bnx2fc_rport *tgt;
 147         int i;
 148
 149         BNX2FC_MISC_DBG("Entered %s\n", __func__);
 150         mutex_lock(&hba->hba_mutex);
 151         spin_lock_bh(&hba->hba_lock);
 152         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
 153                 tgt = hba->tgt_ofld_list[i];
 154                 if (tgt) {
 155                         /* Cleanup IOs belonging to requested vport */
 156                         if (tgt->port == port) {
 157                                 spin_unlock_bh(&hba->hba_lock);
 158                                 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
 159                                 bnx2fc_flush_active_ios(tgt);
 160                                 spin_lock_bh(&hba->hba_lock);
 161                         }
 162                 }
 163         }
 164         spin_unlock_bh(&hba->hba_lock);
 165         mutex_unlock(&hba->hba_mutex);
 166 }
 167
 168 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
 169                              struct fc_frame *fp)
 170 {
 171         struct fc_rport_priv *rdata = tgt->rdata;
 172         struct fc_frame_header *fh;
 173         int rc = 0;
 174
 175         fh = fc_frame_header_get(fp);
 176         BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
 177                         "r_ctl = 0x%x\n", rdata->ids.port_id,
 178                         ntohs(fh->fh_ox_id), fh->fh_r_ctl);
 179         if ((fh->fh_type == FC_TYPE_ELS) &&
 180             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 181
 182                 switch (fc_frame_payload_op(fp)) {
 183                 case ELS_ADISC:
 184                         rc = bnx2fc_send_adisc(tgt, fp);
 185                         break;
 186                 case ELS_LOGO:
 187                         rc = bnx2fc_send_logo(tgt, fp);
 188                         break;
 189                 case ELS_RLS:
 190                         rc = bnx2fc_send_rls(tgt, fp);
 191                         break;
 192                 default:
 193                         break;
 194                 }
 195         } else if ((fh->fh_type ==  FC_TYPE_BLS) &&
 196             (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
 197                 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
 198         else {
 199                 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
 200                                 "rctl 0x%x thru non-offload path\n",
 201                                 fh->fh_type, fh->fh_r_ctl);
 202                 return -ENODEV;
 203         }
 204         if (rc)
 205                 return -ENOMEM;
 206         else
 207                 return 0;
 208 }
 209
 210 /**
 211  * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
 212  *
 213  * @lport:      the associated local port
 214  * @fp: the fc_frame to be transmitted
 215  */
 216 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
 217 {
 218         struct ethhdr           *eh;
 219         struct fcoe_crc_eof     *cp;
 220         struct sk_buff          *skb;
 221         struct fc_frame_header  *fh;
 222         struct bnx2fc_hba       *hba;
 223         struct fcoe_port        *port;
 224         struct fcoe_hdr         *hp;
 225         struct bnx2fc_rport     *tgt;
 226         struct fcoe_dev_stats   *stats;
 227         u8                      sof, eof;
 228         u32                     crc;
 229         unsigned int            hlen, tlen, elen;
 230         int                     wlen, rc = 0;
 231
 232         port = (struct fcoe_port *)lport_priv(lport);
 233         hba = port->priv;
 234
 235         fh = fc_frame_header_get(fp);
 236
 237         skb = fp_skb(fp);
 238         if (!lport->link_up) {
 239                 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
 240                 kfree_skb(skb);
 241                 return 0;
 242         }
 243
 244         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 245                 if (!hba->ctlr.sel_fcf) {
 246                         BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
 247                         kfree_skb(skb);
 248                         return -EINVAL;
 249                 }
 250                 if (fcoe_ctlr_els_send(&hba->ctlr, lport, skb))
 251                         return 0;
 252         }
 253
 254         sof = fr_sof(fp);
 255         eof = fr_eof(fp);
 256
 257         /*
 258          * Snoop the frame header to check if the frame is for
 259          * an offloaded session
 260          */
 261         /*
 262          * tgt_ofld_list access is synchronized using
 263          * both hba mutex and hba lock. Atleast hba mutex or
 264          * hba lock needs to be held for read access.
 265          */
 266
 267         spin_lock_bh(&hba->hba_lock);
 268         tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
 269         if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
 270                 /* This frame is for offloaded session */
 271                 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
 272                                 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
 273                 spin_unlock_bh(&hba->hba_lock);
 274                 rc = bnx2fc_xmit_l2_frame(tgt, fp);
 275                 if (rc != -ENODEV) {
 276                         kfree_skb(skb);
 277                         return rc;
 278                 }
 279         } else {
 280                 spin_unlock_bh(&hba->hba_lock);
 281         }
 282
 283         elen = sizeof(struct ethhdr);
 284         hlen = sizeof(struct fcoe_hdr);
 285         tlen = sizeof(struct fcoe_crc_eof);
 286         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 287
 288         skb->ip_summed = CHECKSUM_NONE;
 289         crc = fcoe_fc_crc(fp);
 290
 291         /* copy port crc and eof to the skb buff */
 292         if (skb_is_nonlinear(skb)) {
 293                 skb_frag_t *frag;
 294                 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
 295                         kfree_skb(skb);
 296                         return -ENOMEM;
 297                 }
 298                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
 299                 cp = kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ)
 300                                 + frag->page_offset;
 301         } else {
 302                 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
 303         }
 304
 305         memset(cp, 0, sizeof(*cp));
 306         cp->fcoe_eof = eof;
 307         cp->fcoe_crc32 = cpu_to_le32(~crc);
 308         if (skb_is_nonlinear(skb)) {
 309                 kunmap_atomic(cp, KM_SKB_DATA_SOFTIRQ);
 310                 cp = NULL;
 311         }
 312
 313         /* adjust skb network/transport offsets to match mac/fcoe/port */
 314         skb_push(skb, elen + hlen);
 315         skb_reset_mac_header(skb);
 316         skb_reset_network_header(skb);
 317         skb->mac_len = elen;
 318         skb->protocol = htons(ETH_P_FCOE);
 319         skb->dev = hba->netdev;
 320
 321         /* fill up mac and fcoe headers */
 322         eh = eth_hdr(skb);
 323         eh->h_proto = htons(ETH_P_FCOE);
 324         if (hba->ctlr.map_dest)
 325                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
 326         else
 327                 /* insert GW address */
 328                 memcpy(eh->h_dest, hba->ctlr.dest_addr, ETH_ALEN);
 329
 330         if (unlikely(hba->ctlr.flogi_oxid != FC_XID_UNKNOWN))
 331                 memcpy(eh->h_source, hba->ctlr.ctl_src_addr, ETH_ALEN);
 332         else
 333                 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
 334
 335         hp = (struct fcoe_hdr *)(eh + 1);
 336         memset(hp, 0, sizeof(*hp));
 337         if (FC_FCOE_VER)
 338                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
 339         hp->fcoe_sof = sof;
 340
 341         /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
 342         if (lport->seq_offload && fr_max_payload(fp)) {
 343                 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
 344                 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
 345         } else {
 346                 skb_shinfo(skb)->gso_type = 0;
 347                 skb_shinfo(skb)->gso_size = 0;
 348         }
 349
 350         /*update tx stats */
 351         stats = per_cpu_ptr(lport->dev_stats, get_cpu());
 352         stats->TxFrames++;
 353         stats->TxWords += wlen;
 354         put_cpu();
 355
 356         /* send down to lld */
 357         fr_dev(fp) = lport;
 358         if (port->fcoe_pending_queue.qlen)
 359                 fcoe_check_wait_queue(lport, skb);
 360         else if (fcoe_start_io(skb))
 361                 fcoe_check_wait_queue(lport, skb);
 362
 363         return 0;
 364 }
 365
 366 /**
 367  * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
 368  *
 369  * @skb:        the receive socket buffer
 370  * @dev:        associated net device
 371  * @ptype:      context
 372  * @olddev:     last device
 373  *
 374  * This function receives the packet and builds FC frame and passes it up
 375  */
 376 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
 377                 struct packet_type *ptype, struct net_device *olddev)
 378 {
 379         struct fc_lport *lport;
 380         struct bnx2fc_hba *hba;
 381         struct fc_frame_header *fh;
 382         struct fcoe_rcv_info *fr;
 383         struct fcoe_percpu_s *bg;
 384         unsigned short oxid;
 385
 386         hba = container_of(ptype, struct bnx2fc_hba, fcoe_packet_type);
 387         lport = hba->ctlr.lp;
 388
 389         if (unlikely(lport == NULL)) {
 390                 printk(KERN_ALERT PFX "bnx2fc_rcv: lport is NULL\n");
 391                 goto err;
 392         }
 393
 394         if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
 395                 printk(KERN_ALERT PFX "bnx2fc_rcv: Wrong FC type frame\n");
 396                 goto err;
 397         }
 398
 399         /*
 400          * Check for minimum frame length, and make sure required FCoE
 401          * and FC headers are pulled into the linear data area.
 402          */
 403         if (unlikely((skb->len < FCOE_MIN_FRAME) ||
 404             !pskb_may_pull(skb, FCOE_HEADER_LEN)))
 405                 goto err;
 406
 407         skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
 408         fh = (struct fc_frame_header *) skb_transport_header(skb);
 409
 410         oxid = ntohs(fh->fh_ox_id);
 411
 412         fr = fcoe_dev_from_skb(skb);
 413         fr->fr_dev = lport;
 414         fr->ptype = ptype;
 415
 416         bg = &bnx2fc_global;
 417         spin_lock_bh(&bg->fcoe_rx_list.lock);
 418
 419         __skb_queue_tail(&bg->fcoe_rx_list, skb);
 420         if (bg->fcoe_rx_list.qlen == 1)
 421                 wake_up_process(bg->thread);
 422
 423         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 424
 425         return 0;
 426 err:
 427         kfree_skb(skb);
 428         return -1;
 429 }
 430
 431 static int bnx2fc_l2_rcv_thread(void *arg)
 432 {
 433         struct fcoe_percpu_s *bg = arg;
 434         struct sk_buff *skb;
 435
 436         set_user_nice(current, -20);
 437         set_current_state(TASK_INTERRUPTIBLE);
 438         while (!kthread_should_stop()) {
 439                 schedule();
 440                 set_current_state(TASK_RUNNING);
 441                 spin_lock_bh(&bg->fcoe_rx_list.lock);
 442                 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
 443                         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 444                         bnx2fc_recv_frame(skb);
 445                         spin_lock_bh(&bg->fcoe_rx_list.lock);
 446                 }
 447                 spin_unlock_bh(&bg->fcoe_rx_list.lock);
 448                 set_current_state(TASK_INTERRUPTIBLE);
 449         }
 450         set_current_state(TASK_RUNNING);
 451         return 0;
 452 }
 453
 454
 455 static void bnx2fc_recv_frame(struct sk_buff *skb)
 456 {
 457         u32 fr_len;
 458         struct fc_lport *lport;
 459         struct fcoe_rcv_info *fr;
 460         struct fcoe_dev_stats *stats;
 461         struct fc_frame_header *fh;
 462         struct fcoe_crc_eof crc_eof;
 463         struct fc_frame *fp;
 464         struct fc_lport *vn_port;
 465         struct fcoe_port *port;
 466         u8 *mac = NULL;
 467         u8 *dest_mac = NULL;
 468         struct fcoe_hdr *hp;
 469
 470         fr = fcoe_dev_from_skb(skb);
 471         lport = fr->fr_dev;
 472         if (unlikely(lport == NULL)) {
 473                 printk(KERN_ALERT PFX "Invalid lport struct\n");
 474                 kfree_skb(skb);
 475                 return;
 476         }
 477
 478         if (skb_is_nonlinear(skb))
 479                 skb_linearize(skb);
 480         mac = eth_hdr(skb)->h_source;
 481         dest_mac = eth_hdr(skb)->h_dest;
 482
 483         /* Pull the header */
 484         hp = (struct fcoe_hdr *) skb_network_header(skb);
 485         fh = (struct fc_frame_header *) skb_transport_header(skb);
 486         skb_pull(skb, sizeof(struct fcoe_hdr));
 487         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
 488
 489         stats = per_cpu_ptr(lport->dev_stats, get_cpu());
 490         stats->RxFrames++;
 491         stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
 492
 493         fp = (struct fc_frame *)skb;
 494         fc_frame_init(fp);
 495         fr_dev(fp) = lport;
 496         fr_sof(fp) = hp->fcoe_sof;
 497         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
 498                 put_cpu();
 499                 kfree_skb(skb);
 500                 return;
 501         }
 502         fr_eof(fp) = crc_eof.fcoe_eof;
 503         fr_crc(fp) = crc_eof.fcoe_crc32;
 504         if (pskb_trim(skb, fr_len)) {
 505                 put_cpu();
 506                 kfree_skb(skb);
 507                 return;
 508         }
 509
 510         fh = fc_frame_header_get(fp);
 511
 512         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
 513         if (vn_port) {
 514                 port = lport_priv(vn_port);
 515                 if (compare_ether_addr(port->data_src_addr, dest_mac)
 516                     != 0) {
 517                         BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
 518                         put_cpu();
 519                         kfree_skb(skb);
 520                         return;
 521                 }
 522         }
 523         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
 524             fh->fh_type == FC_TYPE_FCP) {
 525                 /* Drop FCP data. We dont this in L2 path */
 526                 put_cpu();
 527                 kfree_skb(skb);
 528                 return;
 529         }
 530         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
 531             fh->fh_type == FC_TYPE_ELS) {
 532                 switch (fc_frame_payload_op(fp)) {
 533                 case ELS_LOGO:
 534                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
 535                                 /* drop non-FIP LOGO */
 536                                 put_cpu();
 537                                 kfree_skb(skb);
 538                                 return;
 539                         }
 540                         break;
 541                 }
 542         }
 543         if (le32_to_cpu(fr_crc(fp)) !=
 544                         ~crc32(~0, skb->data, fr_len)) {
 545                 if (stats->InvalidCRCCount < 5)
 546                         printk(KERN_WARNING PFX "dropping frame with "
 547                                "CRC error\n");
 548                 stats->InvalidCRCCount++;
 549                 put_cpu();
 550                 kfree_skb(skb);
 551                 return;
 552         }
 553         put_cpu();
 554         fc_exch_recv(lport, fp);
 555 }
 556
 557 /**
 558  * bnx2fc_percpu_io_thread - thread per cpu for ios
 559  *
 560  * @arg:        ptr to bnx2fc_percpu_info structure
 561  */
 562 int bnx2fc_percpu_io_thread(void *arg)
 563 {
 564         struct bnx2fc_percpu_s *p = arg;
 565         struct bnx2fc_work *work, *tmp;
 566         LIST_HEAD(work_list);
 567
 568         set_user_nice(current, -20);
 569         set_current_state(TASK_INTERRUPTIBLE);
 570         while (!kthread_should_stop()) {
 571                 schedule();
 572                 set_current_state(TASK_RUNNING);
 573                 spin_lock_bh(&p->fp_work_lock);
 574                 while (!list_empty(&p->work_list)) {
 575                         list_splice_init(&p->work_list, &work_list);
 576                         spin_unlock_bh(&p->fp_work_lock);
 577
 578                         list_for_each_entry_safe(work, tmp, &work_list, list) {
 579                                 list_del_init(&work->list);
 580                                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
 581                                 kfree(work);
 582                         }
 583
 584                         spin_lock_bh(&p->fp_work_lock);
 585                 }
 586                 spin_unlock_bh(&p->fp_work_lock);
 587                 set_current_state(TASK_INTERRUPTIBLE);
 588         }
 589         set_current_state(TASK_RUNNING);
 590
 591         return 0;
 592 }
 593
 594 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
 595 {
 596         struct fc_host_statistics *bnx2fc_stats;
 597         struct fc_lport *lport = shost_priv(shost);
 598         struct fcoe_port *port = lport_priv(lport);
 599         struct bnx2fc_hba *hba = port->priv;
 600         struct fcoe_statistics_params *fw_stats;
 601         int rc = 0;
 602
 603         fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
 604         if (!fw_stats)
 605                 return NULL;
 606
 607         bnx2fc_stats = fc_get_host_stats(shost);
 608
 609         init_completion(&hba->stat_req_done);
 610         if (bnx2fc_send_stat_req(hba))
 611                 return bnx2fc_stats;
 612         rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
 613         if (!rc) {
 614                 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
 615                 return bnx2fc_stats;
 616         }
 617         bnx2fc_stats->invalid_crc_count += fw_stats->rx_stat1.fc_crc_cnt;
 618         bnx2fc_stats->tx_frames += fw_stats->tx_stat.fcoe_tx_pkt_cnt;
 619         bnx2fc_stats->tx_words += (fw_stats->tx_stat.fcoe_tx_byte_cnt) / 4;
 620         bnx2fc_stats->rx_frames += fw_stats->rx_stat0.fcoe_rx_pkt_cnt;
 621         bnx2fc_stats->rx_words += (fw_stats->rx_stat0.fcoe_rx_byte_cnt) / 4;
 622
 623         bnx2fc_stats->dumped_frames = 0;
 624         bnx2fc_stats->lip_count = 0;
 625         bnx2fc_stats->nos_count = 0;
 626         bnx2fc_stats->loss_of_sync_count = 0;
 627         bnx2fc_stats->loss_of_signal_count = 0;
 628         bnx2fc_stats->prim_seq_protocol_err_count = 0;
 629
 630         return bnx2fc_stats;
 631 }
 632
 633 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
 634 {
 635         struct fcoe_port *port = lport_priv(lport);
 636         struct bnx2fc_hba *hba = port->priv;
 637         struct Scsi_Host *shost = lport->host;
 638         int rc = 0;
 639
 640         shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
 641         shost->max_lun = BNX2FC_MAX_LUN;
 642         shost->max_id = BNX2FC_MAX_FCP_TGT;
 643         shost->max_channel = 0;
 644         if (lport->vport)
 645                 shost->transportt = bnx2fc_vport_xport_template;
 646         else
 647                 shost->transportt = bnx2fc_transport_template;
 648
 649         /* Add the new host to SCSI-ml */
 650         rc = scsi_add_host(lport->host, dev);
 651         if (rc) {
 652                 printk(KERN_ERR PFX "Error on scsi_add_host\n");
 653                 return rc;
 654         }
 655         if (!lport->vport)
 656                 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
 657         sprintf(fc_host_symbolic_name(lport->host), "%s v%s over %s",
 658                 BNX2FC_NAME, BNX2FC_VERSION,
 659                 hba->netdev->name);
 660
 661         return 0;
 662 }
 663
 664 static int  bnx2fc_mfs_update(struct fc_lport *lport)
 665 {
 666         struct fcoe_port *port = lport_priv(lport);
 667         struct bnx2fc_hba *hba = port->priv;
 668         struct net_device *netdev = hba->netdev;
 669         u32 mfs;
 670         u32 max_mfs;
 671
 672         mfs = netdev->mtu - (sizeof(struct fcoe_hdr) +
 673                              sizeof(struct fcoe_crc_eof));
 674         max_mfs = BNX2FC_MAX_PAYLOAD + sizeof(struct fc_frame_header);
 675         BNX2FC_HBA_DBG(lport, "mfs = %d, max_mfs = %d\n", mfs, max_mfs);
 676         if (mfs > max_mfs)
 677                 mfs = max_mfs;
 678
 679         /* Adjust mfs to be a multiple of 256 bytes */
 680         mfs = (((mfs - sizeof(struct fc_frame_header)) / BNX2FC_MIN_PAYLOAD) *
 681                         BNX2FC_MIN_PAYLOAD);
 682         mfs = mfs + sizeof(struct fc_frame_header);
 683
 684         BNX2FC_HBA_DBG(lport, "Set MFS = %d\n", mfs);
 685         if (fc_set_mfs(lport, mfs))
 686                 return -EINVAL;
 687         return 0;
 688 }
 689 static void bnx2fc_link_speed_update(struct fc_lport *lport)
 690 {
 691         struct fcoe_port *port = lport_priv(lport);
 692         struct bnx2fc_hba *hba = port->priv;
 693         struct net_device *netdev = hba->netdev;
 694         struct ethtool_cmd ecmd = { ETHTOOL_GSET };
 695
 696         if (!dev_ethtool_get_settings(netdev, &ecmd)) {
 697                 lport->link_supported_speeds &=
 698                         ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT);
 699                 if (ecmd.supported & (SUPPORTED_1000baseT_Half |
 700                                       SUPPORTED_1000baseT_Full))
 701                         lport->link_supported_speeds |= FC_PORTSPEED_1GBIT;
 702                 if (ecmd.supported & SUPPORTED_10000baseT_Full)
 703                         lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 704
 705                 if (ecmd.speed == SPEED_1000)
 706                         lport->link_speed = FC_PORTSPEED_1GBIT;
 707                 if (ecmd.speed == SPEED_10000)
 708                         lport->link_speed = FC_PORTSPEED_10GBIT;
 709         }
 710         return;
 711 }
 712 static int bnx2fc_link_ok(struct fc_lport *lport)
 713 {
 714         struct fcoe_port *port = lport_priv(lport);
 715         struct bnx2fc_hba *hba = port->priv;
 716         struct net_device *dev = hba->phys_dev;
 717         int rc = 0;
 718
 719         if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
 720                 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 721         else {
 722                 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 723                 rc = -1;
 724         }
 725         return rc;
 726 }
 727
 728 /**
 729  * bnx2fc_get_link_state - get network link state
 730  *
 731  * @hba:        adapter instance pointer
 732  *
 733  * updates adapter structure flag based on netdev state
 734  */
 735 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
 736 {
 737         if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state))
 738                 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 739         else
 740                 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 741 }
 742
 743 static int bnx2fc_net_config(struct fc_lport *lport)
 744 {
 745         struct bnx2fc_hba *hba;
 746         struct fcoe_port *port;
 747         u64 wwnn, wwpn;
 748
 749         port = lport_priv(lport);
 750         hba = port->priv;
 751
 752         /* require support for get_pauseparam ethtool op. */
 753         if (!hba->phys_dev->ethtool_ops ||
 754             !hba->phys_dev->ethtool_ops->get_pauseparam)
 755                 return -EOPNOTSUPP;
 756
 757         if (bnx2fc_mfs_update(lport))
 758                 return -EINVAL;
 759
 760         skb_queue_head_init(&port->fcoe_pending_queue);
 761         port->fcoe_pending_queue_active = 0;
 762         setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
 763
 764         bnx2fc_link_speed_update(lport);
 765
 766         if (!lport->vport) {
 767                 wwnn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 1, 0);
 768                 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
 769                 fc_set_wwnn(lport, wwnn);
 770
 771                 wwpn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 2, 0);
 772                 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
 773                 fc_set_wwpn(lport, wwpn);
 774         }
 775
 776         return 0;
 777 }
 778
 779 static void bnx2fc_destroy_timer(unsigned long data)
 780 {
 781         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
 782
 783         BNX2FC_HBA_DBG(hba->ctlr.lp, "ERROR:bnx2fc_destroy_timer - "
 784                    "Destroy compl not received!!\n");
 785         hba->flags |= BNX2FC_FLAG_DESTROY_CMPL;
 786         wake_up_interruptible(&hba->destroy_wait);
 787 }
 788
 789 /**
 790  * bnx2fc_indicate_netevent - Generic netdev event handler
 791  *
 792  * @context:    adapter structure pointer
 793  * @event:      event type
 794  *
 795  * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
 796  * NETDEV_CHANGE_MTU events
 797  */
 798 static void bnx2fc_indicate_netevent(void *context, unsigned long event)
 799 {
 800         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
 801         struct fc_lport *lport = hba->ctlr.lp;
 802         struct fc_lport *vport;
 803         u32 link_possible = 1;
 804
 805         if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
 806                 BNX2FC_MISC_DBG("driver not ready. event=%s %ld\n",
 807                            hba->netdev->name, event);
 808                 return;
 809         }
 810
 811         /*
 812          * ASSUMPTION:
 813          * indicate_netevent cannot be called from cnic unless bnx2fc
 814          * does register_device
 815          */
 816         BUG_ON(!lport);
 817
 818         BNX2FC_HBA_DBG(lport, "enter netevent handler - event=%s %ld\n",
 819                                 hba->netdev->name, event);
 820
 821         switch (event) {
 822         case NETDEV_UP:
 823                 BNX2FC_HBA_DBG(lport, "Port up, adapter_state = %ld\n",
 824                         hba->adapter_state);
 825                 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
 826                         printk(KERN_ERR "indicate_netevent: "\
 827                                         "adapter is not UP!!\n");
 828                 /* fall thru to update mfs if MTU has changed */
 829         case NETDEV_CHANGEMTU:
 830                 BNX2FC_HBA_DBG(lport, "NETDEV_CHANGEMTU event\n");
 831                 bnx2fc_mfs_update(lport);
 832                 mutex_lock(&lport->lp_mutex);
 833                 list_for_each_entry(vport, &lport->vports, list)
 834                         bnx2fc_mfs_update(vport);
 835                 mutex_unlock(&lport->lp_mutex);
 836                 break;
 837
 838         case NETDEV_DOWN:
 839                 BNX2FC_HBA_DBG(lport, "Port down\n");
 840                 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 841                 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
 842                 link_possible = 0;
 843                 break;
 844
 845         case NETDEV_GOING_DOWN:
 846                 BNX2FC_HBA_DBG(lport, "Port going down\n");
 847                 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 848                 link_possible = 0;
 849                 break;
 850
 851         case NETDEV_CHANGE:
 852                 BNX2FC_HBA_DBG(lport, "NETDEV_CHANGE\n");
 853                 break;
 854
 855         default:
 856                 printk(KERN_ERR PFX "Unkonwn netevent %ld", event);
 857                 return;
 858         }
 859
 860         bnx2fc_link_speed_update(lport);
 861
 862         if (link_possible && !bnx2fc_link_ok(lport)) {
 863                 printk(KERN_ERR "indicate_netevent: call ctlr_link_up\n");
 864                 fcoe_ctlr_link_up(&hba->ctlr);
 865         } else {
 866                 printk(KERN_ERR "indicate_netevent: call ctlr_link_down\n");
 867                 if (fcoe_ctlr_link_down(&hba->ctlr)) {
 868                         clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
 869                         mutex_lock(&lport->lp_mutex);
 870                         list_for_each_entry(vport, &lport->vports, list)
 871                                 fc_host_port_type(vport->host) =
 872                                                         FC_PORTTYPE_UNKNOWN;
 873                         mutex_unlock(&lport->lp_mutex);
 874                         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
 875                         per_cpu_ptr(lport->dev_stats,
 876                                     get_cpu())->LinkFailureCount++;
 877                         put_cpu();
 878                         fcoe_clean_pending_queue(lport);
 879
 880                         init_waitqueue_head(&hba->shutdown_wait);
 881                         BNX2FC_HBA_DBG(lport, "indicate_netevent "
 882                                              "num_ofld_sess = %d\n",
 883                                    hba->num_ofld_sess);
 884                         hba->wait_for_link_down = 1;
 885                         BNX2FC_HBA_DBG(lport, "waiting for uploads to "
 886                                              "compl proc = %s\n",
 887                                    current->comm);
 888                         wait_event_interruptible(hba->shutdown_wait,
 889                                                  (hba->num_ofld_sess == 0));
 890                         BNX2FC_HBA_DBG(lport, "wakeup - num_ofld_sess = %d\n",
 891                                 hba->num_ofld_sess);
 892                         hba->wait_for_link_down = 0;
 893
 894                         if (signal_pending(current))
 895                                 flush_signals(current);
 896                 }
 897         }
 898 }
 899
 900 static int bnx2fc_libfc_config(struct fc_lport *lport)
 901 {
 902
 903         /* Set the function pointers set by bnx2fc driver */
 904         memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
 905                 sizeof(struct libfc_function_template));
 906         fc_elsct_init(lport);
 907         fc_exch_init(lport);
 908         fc_rport_init(lport);
 909         fc_disc_init(lport);
 910         return 0;
 911 }
 912
 913 static int bnx2fc_em_config(struct fc_lport *lport)
 914 {
 915         struct fcoe_port *port = lport_priv(lport);
 916         struct bnx2fc_hba *hba = port->priv;
 917
 918         if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID,
 919                                 FCOE_MAX_XID, NULL)) {
 920                 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
 921                 return -ENOMEM;
 922         }
 923
 924         hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID,
 925                                             BNX2FC_MAX_XID);
 926
 927         if (!hba->cmd_mgr) {
 928                 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
 929                 fc_exch_mgr_free(lport);
 930                 return -ENOMEM;
 931         }
 932         return 0;
 933 }
 934
 935 static int bnx2fc_lport_config(struct fc_lport *lport)
 936 {
 937         lport->link_up = 0;
 938         lport->qfull = 0;
 939         lport->max_retry_count = 3;
 940         lport->max_rport_retry_count = 3;
 941         lport->e_d_tov = 2 * 1000;
 942         lport->r_a_tov = 10 * 1000;
 943
 944         /* REVISIT: enable when supporting tape devices
 945         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
 946                                 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
 947         */
 948         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS);
 949         lport->does_npiv = 1;
 950
 951         memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
 952         lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
 953
 954         /* alloc stats structure */
 955         if (fc_lport_init_stats(lport))
 956                 return -ENOMEM;
 957
 958         /* Finish fc_lport configuration */
 959         fc_lport_config(lport);
 960
 961         return 0;
 962 }
 963
 964 /**
 965  * bnx2fc_fip_recv - handle a received FIP frame.
 966  *
 967  * @skb: the received skb
 968  * @dev: associated &net_device
 969  * @ptype: the &packet_type structure which was used to register this handler.
 970  * @orig_dev: original receive &net_device, in case @ dev is a bond.
 971  *
 972  * Returns: 0 for success
 973  */
 974 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
 975                            struct packet_type *ptype,
 976                            struct net_device *orig_dev)
 977 {
 978         struct bnx2fc_hba *hba;
 979         hba = container_of(ptype, struct bnx2fc_hba, fip_packet_type);
 980         fcoe_ctlr_recv(&hba->ctlr, skb);
 981         return 0;
 982 }
 983
 984 /**
 985  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
 986  *
 987  * @fip: FCoE controller.
 988  * @old: Unicast MAC address to delete if the MAC is non-zero.
 989  * @new: Unicast MAC address to add.
 990  *
 991  * Remove any previously-set unicast MAC filter.
 992  * Add secondary FCoE MAC address filter for our OUI.
 993  */
 994 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
 995 {
 996         struct fcoe_port *port = lport_priv(lport);
 997
 998         memcpy(port->data_src_addr, addr, ETH_ALEN);
 999 }
1000
1001 /**
1002  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1003  *
1004  * @lport: libfc port
1005  */
1006 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1007 {
1008         struct fcoe_port *port;
1009
1010         port = (struct fcoe_port *)lport_priv(lport);
1011         return port->data_src_addr;
1012 }
1013
1014 /**
1015  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1016  *
1017  * @fip: FCoE controller.
1018  * @skb: FIP Packet.
1019  */
1020 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1021 {
1022         skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1023         dev_queue_xmit(skb);
1024 }
1025
1026 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1027 {
1028         struct Scsi_Host *shost = vport_to_shost(vport);
1029         struct fc_lport *n_port = shost_priv(shost);
1030         struct fcoe_port *port = lport_priv(n_port);
1031         struct bnx2fc_hba *hba = port->priv;
1032         struct net_device *netdev = hba->netdev;
1033         struct fc_lport *vn_port;
1034
1035         if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1036                 printk(KERN_ERR PFX "vn ports cannot be created on"
1037                         "this hba\n");
1038                 return -EIO;
1039         }
1040         mutex_lock(&bnx2fc_dev_lock);
1041         vn_port = bnx2fc_if_create(hba, &vport->dev, 1);
1042         mutex_unlock(&bnx2fc_dev_lock);
1043
1044         if (IS_ERR(vn_port)) {
1045                 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1046                         netdev->name);
1047                 return -EIO;
1048         }
1049
1050         if (disabled) {
1051                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1052         } else {
1053                 vn_port->boot_time = jiffies;
1054                 fc_lport_init(vn_port);
1055                 fc_fabric_login(vn_port);
1056                 fc_vport_setlink(vn_port);
1057         }
1058         return 0;
1059 }
1060
1061 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1062 {
1063         struct Scsi_Host *shost = vport_to_shost(vport);
1064         struct fc_lport *n_port = shost_priv(shost);
1065         struct fc_lport *vn_port = vport->dd_data;
1066         struct fcoe_port *port = lport_priv(vn_port);
1067
1068         mutex_lock(&n_port->lp_mutex);
1069         list_del(&vn_port->list);
1070         mutex_unlock(&n_port->lp_mutex);
1071         queue_work(bnx2fc_wq, &port->destroy_work);
1072         return 0;
1073 }
1074
1075 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1076 {
1077         struct fc_lport *lport = vport->dd_data;
1078
1079         if (disable) {
1080                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1081                 fc_fabric_logoff(lport);
1082         } else {
1083                 lport->boot_time = jiffies;
1084                 fc_fabric_login(lport);
1085                 fc_vport_setlink(lport);
1086         }
1087         return 0;
1088 }
1089
1090
1091 static int bnx2fc_netdev_setup(struct bnx2fc_hba *hba)
1092 {
1093         struct net_device *netdev = hba->netdev;
1094         struct net_device *physdev = hba->phys_dev;
1095         struct netdev_hw_addr *ha;
1096         int sel_san_mac = 0;
1097
1098         /* Do not support for bonding device */
1099         if ((netdev->priv_flags & IFF_MASTER_ALB) ||
1100                         (netdev->priv_flags & IFF_SLAVE_INACTIVE) ||
1101                         (netdev->priv_flags & IFF_MASTER_8023AD)) {
1102                 return -EOPNOTSUPP;
1103         }
1104
1105         /* setup Source MAC Address */
1106         rcu_read_lock();
1107         for_each_dev_addr(physdev, ha) {
1108                 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1109                                 ha->type);
1110                 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1111                                 ha->addr[1], ha->addr[2], ha->addr[3],
1112                                 ha->addr[4], ha->addr[5]);
1113
1114                 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1115                     (is_valid_ether_addr(ha->addr))) {
1116                         memcpy(hba->ctlr.ctl_src_addr, ha->addr, ETH_ALEN);
1117                         sel_san_mac = 1;
1118                         BNX2FC_MISC_DBG("Found SAN MAC\n");
1119                 }
1120         }
1121         rcu_read_unlock();
1122
1123         if (!sel_san_mac)
1124                 return -ENODEV;
1125
1126         hba->fip_packet_type.func = bnx2fc_fip_recv;
1127         hba->fip_packet_type.type = htons(ETH_P_FIP);
1128         hba->fip_packet_type.dev = netdev;
1129         dev_add_pack(&hba->fip_packet_type);
1130
1131         hba->fcoe_packet_type.func = bnx2fc_rcv;
1132         hba->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1133         hba->fcoe_packet_type.dev = netdev;
1134         dev_add_pack(&hba->fcoe_packet_type);
1135
1136         return 0;
1137 }
1138
1139 static int bnx2fc_attach_transport(void)
1140 {
1141         bnx2fc_transport_template =
1142                 fc_attach_transport(&bnx2fc_transport_function);
1143
1144         if (bnx2fc_transport_template == NULL) {
1145                 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1146                 return -ENODEV;
1147         }
1148
1149         bnx2fc_vport_xport_template =
1150                 fc_attach_transport(&bnx2fc_vport_xport_function);
1151         if (bnx2fc_vport_xport_template == NULL) {
1152                 printk(KERN_ERR PFX
1153                        "Failed to attach FC transport for vport\n");
1154                 fc_release_transport(bnx2fc_transport_template);
1155                 bnx2fc_transport_template = NULL;
1156                 return -ENODEV;
1157         }
1158         return 0;
1159 }
1160 static void bnx2fc_release_transport(void)
1161 {
1162         fc_release_transport(bnx2fc_transport_template);
1163         fc_release_transport(bnx2fc_vport_xport_template);
1164         bnx2fc_transport_template = NULL;
1165         bnx2fc_vport_xport_template = NULL;
1166 }
1167
1168 static void bnx2fc_interface_release(struct kref *kref)
1169 {
1170         struct bnx2fc_hba *hba;
1171         struct net_device *netdev;
1172         struct net_device *phys_dev;
1173
1174         hba = container_of(kref, struct bnx2fc_hba, kref);
1175         BNX2FC_HBA_DBG(hba->ctlr.lp, "Interface is being released\n");
1176
1177         netdev = hba->netdev;
1178         phys_dev = hba->phys_dev;
1179
1180         /* tear-down FIP controller */
1181         if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done))
1182                 fcoe_ctlr_destroy(&hba->ctlr);
1183
1184         /* Free the command manager */
1185         if (hba->cmd_mgr) {
1186                 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1187                 hba->cmd_mgr = NULL;
1188         }
1189         dev_put(netdev);
1190         module_put(THIS_MODULE);
1191 }
1192
1193 static inline void bnx2fc_interface_get(struct bnx2fc_hba *hba)
1194 {
1195         kref_get(&hba->kref);
1196 }
1197
1198 static inline void bnx2fc_interface_put(struct bnx2fc_hba *hba)
1199 {
1200         kref_put(&hba->kref, bnx2fc_interface_release);
1201 }
1202 static void bnx2fc_interface_destroy(struct bnx2fc_hba *hba)
1203 {
1204         bnx2fc_unbind_pcidev(hba);
1205         kfree(hba);
1206 }
1207
1208 /**
1209  * bnx2fc_interface_create - create a new fcoe instance
1210  *
1211  * @cnic:       pointer to cnic device
1212  *
1213  * Creates a new FCoE instance on the given device which include allocating
1214  *      hba structure, scsi_host and lport structures.
1215  */
1216 static struct bnx2fc_hba *bnx2fc_interface_create(struct cnic_dev *cnic)
1217 {
1218         struct bnx2fc_hba *hba;
1219         int rc;
1220
1221         hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1222         if (!hba) {
1223                 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1224                 return NULL;
1225         }
1226         spin_lock_init(&hba->hba_lock);
1227         mutex_init(&hba->hba_mutex);
1228
1229         hba->cnic = cnic;
1230         rc = bnx2fc_bind_pcidev(hba);
1231         if (rc)
1232                 goto bind_err;
1233         hba->phys_dev = cnic->netdev;
1234         /* will get overwritten after we do vlan discovery */
1235         hba->netdev = hba->phys_dev;
1236
1237         init_waitqueue_head(&hba->shutdown_wait);
1238         init_waitqueue_head(&hba->destroy_wait);
1239
1240         return hba;
1241 bind_err:
1242         printk(KERN_ERR PFX "create_interface: bind error\n");
1243         kfree(hba);
1244         return NULL;
1245 }
1246
1247 static int bnx2fc_interface_setup(struct bnx2fc_hba *hba,
1248                                   enum fip_state fip_mode)
1249 {
1250         int rc = 0;
1251         struct net_device *netdev = hba->netdev;
1252         struct fcoe_ctlr *fip = &hba->ctlr;
1253
1254         dev_hold(netdev);
1255         kref_init(&hba->kref);
1256
1257         hba->flags = 0;
1258
1259         /* Initialize FIP */
1260         memset(fip, 0, sizeof(*fip));
1261         fcoe_ctlr_init(fip, fip_mode);
1262         hba->ctlr.send = bnx2fc_fip_send;
1263         hba->ctlr.update_mac = bnx2fc_update_src_mac;
1264         hba->ctlr.get_src_addr = bnx2fc_get_src_mac;
1265         set_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done);
1266
1267         rc = bnx2fc_netdev_setup(hba);
1268         if (rc)
1269                 goto setup_err;
1270
1271         hba->next_conn_id = 0;
1272
1273         memset(hba->tgt_ofld_list, 0, sizeof(hba->tgt_ofld_list));
1274         hba->num_ofld_sess = 0;
1275
1276         return 0;
1277
1278 setup_err:
1279         fcoe_ctlr_destroy(&hba->ctlr);
1280         dev_put(netdev);
1281         bnx2fc_interface_put(hba);
1282         return rc;
1283 }
1284
1285 /**
1286  * bnx2fc_if_create - Create FCoE instance on a given interface
1287  *
1288  * @hba:        FCoE interface to create a local port on
1289  * @parent:     Device pointer to be the parent in sysfs for the SCSI host
1290  * @npiv:       Indicates if the port is vport or not
1291  *
1292  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1293  *
1294  * Returns:     Allocated fc_lport or an error pointer
1295  */
1296 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_hba *hba,
1297                                   struct device *parent, int npiv)
1298 {
1299         struct fc_lport         *lport = NULL;
1300         struct fcoe_port        *port;
1301         struct Scsi_Host        *shost;
1302         struct fc_vport         *vport = dev_to_vport(parent);
1303         int                     rc = 0;
1304
1305         /* Allocate Scsi_Host structure */
1306         if (!npiv) {
1307                 lport = libfc_host_alloc(&bnx2fc_shost_template,
1308                                           sizeof(struct fcoe_port));
1309         } else {
1310                 lport = libfc_vport_create(vport,
1311                                            sizeof(struct fcoe_port));
1312         }
1313
1314         if (!lport) {
1315                 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1316                 return NULL;
1317         }
1318         shost = lport->host;
1319         port = lport_priv(lport);
1320         port->lport = lport;
1321         port->priv = hba;
1322         INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1323
1324         /* Configure fcoe_port */
1325         rc = bnx2fc_lport_config(lport);
1326         if (rc)
1327                 goto lp_config_err;
1328
1329         if (npiv) {
1330                 vport = dev_to_vport(parent);
1331                 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1332                         vport->node_name, vport->port_name);
1333                 fc_set_wwnn(lport, vport->node_name);
1334                 fc_set_wwpn(lport, vport->port_name);
1335         }
1336         /* Configure netdev and networking properties of the lport */
1337         rc = bnx2fc_net_config(lport);
1338         if (rc) {
1339                 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1340                 goto lp_config_err;
1341         }
1342
1343         rc = bnx2fc_shost_config(lport, parent);
1344         if (rc) {
1345                 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1346                         hba->netdev->name);
1347                 goto lp_config_err;
1348         }
1349
1350         /* Initialize the libfc library */
1351         rc = bnx2fc_libfc_config(lport);
1352         if (rc) {
1353                 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1354                 goto shost_err;
1355         }
1356         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1357
1358         /* Allocate exchange manager */
1359         if (!npiv) {
1360                 rc = bnx2fc_em_config(lport);
1361                 if (rc) {
1362                         printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1363                         goto shost_err;
1364                 }
1365         }
1366
1367         bnx2fc_interface_get(hba);
1368         return lport;
1369
1370 shost_err:
1371         scsi_remove_host(shost);
1372 lp_config_err:
1373         scsi_host_put(lport->host);
1374         return NULL;
1375 }
1376
1377 static void bnx2fc_netdev_cleanup(struct bnx2fc_hba *hba)
1378 {
1379         /* Dont listen for Ethernet packets anymore */
1380         __dev_remove_pack(&hba->fcoe_packet_type);
1381         __dev_remove_pack(&hba->fip_packet_type);
1382         synchronize_net();
1383 }
1384
1385 static void bnx2fc_if_destroy(struct fc_lport *lport)
1386 {
1387         struct fcoe_port *port = lport_priv(lport);
1388         struct bnx2fc_hba *hba = port->priv;
1389
1390         BNX2FC_HBA_DBG(hba->ctlr.lp, "ENTERED bnx2fc_if_destroy\n");
1391         /* Stop the transmit retry timer */
1392         del_timer_sync(&port->timer);
1393
1394         /* Free existing transmit skbs */
1395         fcoe_clean_pending_queue(lport);
1396
1397         bnx2fc_interface_put(hba);
1398
1399         /* Free queued packets for the receive thread */
1400         bnx2fc_clean_rx_queue(lport);
1401
1402         /* Detach from scsi-ml */
1403         fc_remove_host(lport->host);
1404         scsi_remove_host(lport->host);
1405
1406         /*
1407          * Note that only the physical lport will have the exchange manager.
1408          * for vports, this function is NOP
1409          */
1410         fc_exch_mgr_free(lport);
1411
1412         /* Free memory used by statistical counters */
1413         fc_lport_free_stats(lport);
1414
1415         /* Release Scsi_Host */
1416         scsi_host_put(lport->host);
1417 }
1418
1419 /**
1420  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1421  *
1422  * @buffer: The name of the Ethernet interface to be destroyed
1423  * @kp:     The associated kernel parameter
1424  *
1425  * Called from sysfs.
1426  *
1427  * Returns: 0 for success
1428  */
1429 static int bnx2fc_destroy(struct net_device *netdev)
1430 {
1431         struct bnx2fc_hba *hba = NULL;
1432         struct net_device *phys_dev;
1433         int rc = 0;
1434
1435         if (!rtnl_trylock())
1436                 return restart_syscall();
1437
1438         mutex_lock(&bnx2fc_dev_lock);
1439 #ifdef CONFIG_SCSI_BNX2X_FCOE_MODULE
1440         if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1441                 rc = -ENODEV;
1442                 goto netdev_err;
1443         }
1444 #endif
1445         /* obtain physical netdev */
1446         if (netdev->priv_flags & IFF_802_1Q_VLAN)
1447                 phys_dev = vlan_dev_real_dev(netdev);
1448         else {
1449                 printk(KERN_ERR PFX "Not a vlan device\n");
1450                 rc = -ENODEV;
1451                 goto netdev_err;
1452         }
1453
1454         hba = bnx2fc_hba_lookup(phys_dev);
1455         if (!hba || !hba->ctlr.lp) {
1456                 rc = -ENODEV;
1457                 printk(KERN_ERR PFX "bnx2fc_destroy: hba or lport not found\n");
1458                 goto netdev_err;
1459         }
1460
1461         if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1462                 printk(KERN_ERR PFX "bnx2fc_destroy: Create not called\n");
1463                 goto netdev_err;
1464         }
1465
1466         bnx2fc_netdev_cleanup(hba);
1467
1468         bnx2fc_stop(hba);
1469
1470         bnx2fc_if_destroy(hba->ctlr.lp);
1471
1472         destroy_workqueue(hba->timer_work_queue);
1473
1474         if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done))
1475                 bnx2fc_fw_destroy(hba);
1476
1477         clear_bit(BNX2FC_CREATE_DONE, &hba->init_done);
1478 netdev_err:
1479         mutex_unlock(&bnx2fc_dev_lock);
1480         rtnl_unlock();
1481         return rc;
1482 }
1483
1484 static void bnx2fc_destroy_work(struct work_struct *work)
1485 {
1486         struct fcoe_port *port;
1487         struct fc_lport *lport;
1488
1489         port = container_of(work, struct fcoe_port, destroy_work);
1490         lport = port->lport;
1491
1492         BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1493
1494         bnx2fc_port_shutdown(lport);
1495         rtnl_lock();
1496         mutex_lock(&bnx2fc_dev_lock);
1497         bnx2fc_if_destroy(lport);
1498         mutex_unlock(&bnx2fc_dev_lock);
1499         rtnl_unlock();
1500 }
1501
1502 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1503 {
1504         bnx2fc_free_fw_resc(hba);
1505         bnx2fc_free_task_ctx(hba);
1506 }
1507
1508 /**
1509  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1510  *                      pci structure
1511  *
1512  * @hba:                Adapter instance
1513  */
1514 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1515 {
1516         if (bnx2fc_setup_task_ctx(hba))
1517                 goto mem_err;
1518
1519         if (bnx2fc_setup_fw_resc(hba))
1520                 goto mem_err;
1521
1522         return 0;
1523 mem_err:
1524         bnx2fc_unbind_adapter_devices(hba);
1525         return -ENOMEM;
1526 }
1527
1528 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1529 {
1530         struct cnic_dev *cnic;
1531
1532         if (!hba->cnic) {
1533                 printk(KERN_ERR PFX "cnic is NULL\n");
1534                 return -ENODEV;
1535         }
1536         cnic = hba->cnic;
1537         hba->pcidev = cnic->pcidev;
1538         if (hba->pcidev)
1539                 pci_dev_get(hba->pcidev);
1540
1541         return 0;
1542 }
1543
1544 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1545 {
1546         if (hba->pcidev)
1547                 pci_dev_put(hba->pcidev);
1548         hba->pcidev = NULL;
1549 }
1550
1551
1552
1553 /**
1554  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1555  *
1556  * @handle:     transport handle pointing to adapter struture
1557  *
1558  * This function maps adapter structure to pcidev structure and initiates
1559  *      firmware handshake to enable/initialize on-chip FCoE components.
1560  *      This bnx2fc - cnic interface api callback is used after following
1561  *      conditions are met -
1562  *      a) underlying network interface is up (marked by event NETDEV_UP
1563  *              from netdev
1564  *      b) bnx2fc adatper structure is registered.
1565  */
1566 static void bnx2fc_ulp_start(void *handle)
1567 {
1568         struct bnx2fc_hba *hba = handle;
1569         struct fc_lport *lport = hba->ctlr.lp;
1570
1571         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1572         mutex_lock(&bnx2fc_dev_lock);
1573
1574         if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done))
1575                 goto start_disc;
1576
1577         if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done))
1578                 bnx2fc_fw_init(hba);
1579
1580 start_disc:
1581         mutex_unlock(&bnx2fc_dev_lock);
1582
1583         BNX2FC_MISC_DBG("bnx2fc started.\n");
1584
1585         /* Kick off Fabric discovery*/
1586         if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1587                 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1588                 lport->tt.frame_send = bnx2fc_xmit;
1589                 bnx2fc_start_disc(hba);
1590         }
1591 }
1592
1593 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1594 {
1595         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1596         fc_fabric_logoff(lport);
1597         fc_lport_destroy(lport);
1598 }
1599
1600 static void bnx2fc_stop(struct bnx2fc_hba *hba)
1601 {
1602         struct fc_lport *lport;
1603         struct fc_lport *vport;
1604
1605         BNX2FC_MISC_DBG("ENTERED %s - init_done = %ld\n", __func__,
1606                    hba->init_done);
1607         if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done) &&
1608             test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1609                 lport = hba->ctlr.lp;
1610                 bnx2fc_port_shutdown(lport);
1611                 BNX2FC_HBA_DBG(lport, "bnx2fc_stop: waiting for %d "
1612                                 "offloaded sessions\n",
1613                                 hba->num_ofld_sess);
1614                 wait_event_interruptible(hba->shutdown_wait,
1615                                          (hba->num_ofld_sess == 0));
1616                 mutex_lock(&lport->lp_mutex);
1617                 list_for_each_entry(vport, &lport->vports, list)
1618                         fc_host_port_type(vport->host) = FC_PORTTYPE_UNKNOWN;
1619                 mutex_unlock(&lport->lp_mutex);
1620                 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1621                 fcoe_ctlr_link_down(&hba->ctlr);
1622                 fcoe_clean_pending_queue(lport);
1623
1624                 mutex_lock(&hba->hba_mutex);
1625                 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1626                 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
1627
1628                 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1629                 mutex_unlock(&hba->hba_mutex);
1630         }
1631 }
1632
1633 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1634 {
1635 #define BNX2FC_INIT_POLL_TIME           (1000 / HZ)
1636         int rc = -1;
1637         int i = HZ;
1638
1639         rc = bnx2fc_bind_adapter_devices(hba);
1640         if (rc) {
1641                 printk(KERN_ALERT PFX
1642                         "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1643                 goto err_out;
1644         }
1645
1646         rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1647         if (rc) {
1648                 printk(KERN_ALERT PFX
1649                         "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1650                 goto err_unbind;
1651         }
1652
1653         /*
1654          * Wait until the adapter init message is complete, and adapter
1655          * state is UP.
1656          */
1657         while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1658                 msleep(BNX2FC_INIT_POLL_TIME);
1659
1660         if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1661                 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1662                                 "Ignoring...\n",
1663                                 hba->cnic->netdev->name);
1664                 rc = -1;
1665                 goto err_unbind;
1666         }
1667
1668
1669         /* Mark HBA to indicate that the FW INIT is done */
1670         set_bit(BNX2FC_FW_INIT_DONE, &hba->init_done);
1671         return 0;
1672
1673 err_unbind:
1674         bnx2fc_unbind_adapter_devices(hba);
1675 err_out:
1676         return rc;
1677 }
1678
1679 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1680 {
1681         if (test_and_clear_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1682                 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1683                         init_timer(&hba->destroy_timer);
1684                         hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1685                                                                 jiffies;
1686                         hba->destroy_timer.function = bnx2fc_destroy_timer;
1687                         hba->destroy_timer.data = (unsigned long)hba;
1688                         add_timer(&hba->destroy_timer);
1689                         wait_event_interruptible(hba->destroy_wait,
1690                                                  (hba->flags &
1691                                                   BNX2FC_FLAG_DESTROY_CMPL));
1692                         /* This should never happen */
1693                         if (signal_pending(current))
1694                                 flush_signals(current);
1695
1696                         del_timer_sync(&hba->destroy_timer);
1697                 }
1698                 bnx2fc_unbind_adapter_devices(hba);
1699         }
1700 }
1701
1702 /**
1703  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1704  *
1705  * @handle:     transport handle pointing to adapter structure
1706  *
1707  * Driver checks if adapter is already in shutdown mode, if not start
1708  *      the shutdown process.
1709  */
1710 static void bnx2fc_ulp_stop(void *handle)
1711 {
1712         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)handle;
1713
1714         printk(KERN_ERR "ULP_STOP\n");
1715
1716         mutex_lock(&bnx2fc_dev_lock);
1717         bnx2fc_stop(hba);
1718         bnx2fc_fw_destroy(hba);
1719         mutex_unlock(&bnx2fc_dev_lock);
1720 }
1721
1722 static void bnx2fc_start_disc(struct bnx2fc_hba *hba)
1723 {
1724         struct fc_lport *lport;
1725         int wait_cnt = 0;
1726
1727         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1728         /* Kick off FIP/FLOGI */
1729         if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1730                 printk(KERN_ERR PFX "Init not done yet\n");
1731                 return;
1732         }
1733
1734         lport = hba->ctlr.lp;
1735         BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1736
1737         if (!bnx2fc_link_ok(lport)) {
1738                 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1739                 fcoe_ctlr_link_up(&hba->ctlr);
1740                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1741                 set_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1742         }
1743
1744         /* wait for the FCF to be selected before issuing FLOGI */
1745         while (!hba->ctlr.sel_fcf) {
1746                 msleep(250);
1747                 /* give up after 3 secs */
1748                 if (++wait_cnt > 12)
1749                         break;
1750         }
1751         fc_lport_init(lport);
1752         fc_fabric_login(lport);
1753 }
1754
1755
1756 /**
1757  * bnx2fc_ulp_init - Initialize an adapter instance
1758  *
1759  * @dev :       cnic device handle
1760  * Called from cnic_register_driver() context to initialize all
1761  *      enumerated cnic devices. This routine allocates adapter structure
1762  *      and other device specific resources.
1763  */
1764 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1765 {
1766         struct bnx2fc_hba *hba;
1767         int rc = 0;
1768
1769         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1770         /* bnx2fc works only when bnx2x is loaded */
1771         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1772                 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1773                                     " flags: %lx\n",
1774                         dev->netdev->name, dev->flags);
1775                 return;
1776         }
1777
1778         /* Configure FCoE interface */
1779         hba = bnx2fc_interface_create(dev);
1780         if (!hba) {
1781                 printk(KERN_ERR PFX "hba initialization failed\n");
1782                 return;
1783         }
1784
1785         /* Add HBA to the adapter list */
1786         mutex_lock(&bnx2fc_dev_lock);
1787         list_add_tail(&hba->link, &adapter_list);
1788         adapter_count++;
1789         mutex_unlock(&bnx2fc_dev_lock);
1790
1791         clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1792         rc = dev->register_device(dev, CNIC_ULP_FCOE,
1793                                                 (void *) hba);
1794         if (rc)
1795                 printk(KERN_ALERT PFX "register_device failed, rc = %d\n", rc);
1796         else
1797                 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1798 }
1799
1800
1801 static int bnx2fc_disable(struct net_device *netdev)
1802 {
1803         struct bnx2fc_hba *hba;
1804         struct net_device *phys_dev;
1805         struct ethtool_drvinfo drvinfo;
1806         int rc = 0;
1807
1808         if (!rtnl_trylock()) {
1809                 printk(KERN_ERR PFX "retrying for rtnl_lock\n");
1810                 return -EIO;
1811         }
1812
1813         mutex_lock(&bnx2fc_dev_lock);
1814
1815         if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1816                 rc = -ENODEV;
1817                 goto nodev;
1818         }
1819
1820         /* obtain physical netdev */
1821         if (netdev->priv_flags & IFF_802_1Q_VLAN)
1822                 phys_dev = vlan_dev_real_dev(netdev);
1823         else {
1824                 printk(KERN_ERR PFX "Not a vlan device\n");
1825                 rc = -ENODEV;
1826                 goto nodev;
1827         }
1828
1829         /* verify if the physical device is a netxtreme2 device */
1830         if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1831                 memset(&drvinfo, 0, sizeof(drvinfo));
1832                 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1833                 if (strcmp(drvinfo.driver, "bnx2x")) {
1834                         printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1835                         rc = -ENODEV;
1836                         goto nodev;
1837                 }
1838         } else {
1839                 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1840                 rc = -ENODEV;
1841                 goto nodev;
1842         }
1843
1844         printk(KERN_ERR PFX "phys_dev is netxtreme2 device\n");
1845
1846         /* obtain hba and initialize rest of the structure */
1847         hba = bnx2fc_hba_lookup(phys_dev);
1848         if (!hba || !hba->ctlr.lp) {
1849                 rc = -ENODEV;
1850                 printk(KERN_ERR PFX "bnx2fc_disable: hba or lport not found\n");
1851         } else {
1852                 fcoe_ctlr_link_down(&hba->ctlr);
1853                 fcoe_clean_pending_queue(hba->ctlr.lp);
1854         }
1855
1856 nodev:
1857         mutex_unlock(&bnx2fc_dev_lock);
1858         rtnl_unlock();
1859         return rc;
1860 }
1861
1862
1863 static int bnx2fc_enable(struct net_device *netdev)
1864 {
1865         struct bnx2fc_hba *hba;
1866         struct net_device *phys_dev;
1867         struct ethtool_drvinfo drvinfo;
1868         int rc = 0;
1869
1870         if (!rtnl_trylock()) {
1871                 printk(KERN_ERR PFX "retrying for rtnl_lock\n");
1872                 return -EIO;
1873         }
1874
1875         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1876         mutex_lock(&bnx2fc_dev_lock);
1877
1878         if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1879                 rc = -ENODEV;
1880                 goto nodev;
1881         }
1882
1883         /* obtain physical netdev */
1884         if (netdev->priv_flags & IFF_802_1Q_VLAN)
1885                 phys_dev = vlan_dev_real_dev(netdev);
1886         else {
1887                 printk(KERN_ERR PFX "Not a vlan device\n");
1888                 rc = -ENODEV;
1889                 goto nodev;
1890         }
1891         /* verify if the physical device is a netxtreme2 device */
1892         if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1893                 memset(&drvinfo, 0, sizeof(drvinfo));
1894                 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1895                 if (strcmp(drvinfo.driver, "bnx2x")) {
1896                         printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1897                         rc = -ENODEV;
1898                         goto nodev;
1899                 }
1900         } else {
1901                 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1902                 rc = -ENODEV;
1903                 goto nodev;
1904         }
1905
1906         /* obtain hba and initialize rest of the structure */
1907         hba = bnx2fc_hba_lookup(phys_dev);
1908         if (!hba || !hba->ctlr.lp) {
1909                 rc = -ENODEV;
1910                 printk(KERN_ERR PFX "bnx2fc_enable: hba or lport not found\n");
1911         } else if (!bnx2fc_link_ok(hba->ctlr.lp))
1912                 fcoe_ctlr_link_up(&hba->ctlr);
1913
1914 nodev:
1915         mutex_unlock(&bnx2fc_dev_lock);
1916         rtnl_unlock();
1917         return rc;
1918 }
1919
1920 /**
1921  * bnx2fc_create - Create bnx2fc FCoE interface
1922  *
1923  * @buffer: The name of Ethernet interface to create on
1924  * @kp:     The associated kernel param
1925  *
1926  * Called from sysfs.
1927  *
1928  * Returns: 0 for success
1929  */
1930 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
1931 {
1932         struct bnx2fc_hba *hba;
1933         struct net_device *phys_dev;
1934         struct fc_lport *lport;
1935         struct ethtool_drvinfo drvinfo;
1936         int rc = 0;
1937         int vlan_id;
1938
1939         BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
1940         if (fip_mode != FIP_MODE_FABRIC) {
1941                 printk(KERN_ERR "fip mode not FABRIC\n");
1942                 return -EIO;
1943         }
1944
1945         if (!rtnl_trylock()) {
1946                 printk(KERN_ERR "trying for rtnl_lock\n");
1947                 return -EIO;
1948         }
1949         mutex_lock(&bnx2fc_dev_lock);
1950
1951 #ifdef CONFIG_SCSI_BNX2X_FCOE_MODULE
1952         if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1953                 rc = -ENODEV;
1954                 goto mod_err;
1955         }
1956 #endif
1957
1958         if (!try_module_get(THIS_MODULE)) {
1959                 rc = -EINVAL;
1960                 goto mod_err;
1961         }
1962
1963         /* obtain physical netdev */
1964         if (netdev->priv_flags & IFF_802_1Q_VLAN) {
1965                 phys_dev = vlan_dev_real_dev(netdev);
1966                 vlan_id = vlan_dev_vlan_id(netdev);
1967         } else {
1968                 printk(KERN_ERR PFX "Not a vlan device\n");
1969                 rc = -EINVAL;
1970                 goto netdev_err;
1971         }
1972         /* verify if the physical device is a netxtreme2 device */
1973         if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1974                 memset(&drvinfo, 0, sizeof(drvinfo));
1975                 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1976                 if (strcmp(drvinfo.driver, "bnx2x")) {
1977                         printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1978                         rc = -EINVAL;
1979                         goto netdev_err;
1980                 }
1981         } else {
1982                 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1983                 rc = -EINVAL;
1984                 goto netdev_err;
1985         }
1986
1987         /* obtain hba and initialize rest of the structure */
1988         hba = bnx2fc_hba_lookup(phys_dev);
1989         if (!hba) {
1990                 rc = -ENODEV;
1991                 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
1992                 goto netdev_err;
1993         }
1994
1995         if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1996                 rc = bnx2fc_fw_init(hba);
1997                 if (rc)
1998                         goto netdev_err;
1999         }
2000
2001         if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
2002                 rc = -EEXIST;
2003                 goto netdev_err;
2004         }
2005
2006         /* update netdev with vlan netdev */
2007         hba->netdev = netdev;
2008         hba->vlan_id = vlan_id;
2009         hba->vlan_enabled = 1;
2010
2011         rc = bnx2fc_interface_setup(hba, fip_mode);
2012         if (rc) {
2013                 printk(KERN_ERR PFX "bnx2fc_interface_setup failed\n");
2014                 goto ifput_err;
2015         }
2016
2017         hba->timer_work_queue =
2018                         create_singlethread_workqueue("bnx2fc_timer_wq");
2019         if (!hba->timer_work_queue) {
2020                 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2021                 rc = -EINVAL;
2022                 goto ifput_err;
2023         }
2024
2025         lport = bnx2fc_if_create(hba, &hba->pcidev->dev, 0);
2026         if (!lport) {
2027                 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2028                         netdev->name);
2029                 bnx2fc_netdev_cleanup(hba);
2030                 rc = -EINVAL;
2031                 goto if_create_err;
2032         }
2033
2034         lport->boot_time = jiffies;
2035
2036         /* Make this master N_port */
2037         hba->ctlr.lp = lport;
2038
2039         set_bit(BNX2FC_CREATE_DONE, &hba->init_done);
2040         printk(KERN_ERR PFX "create: START DISC\n");
2041         bnx2fc_start_disc(hba);
2042         /*
2043          * Release from kref_init in bnx2fc_interface_setup, on success
2044          * lport should be holding a reference taken in bnx2fc_if_create
2045          */
2046         bnx2fc_interface_put(hba);
2047         /* put netdev that was held while calling dev_get_by_name */
2048         mutex_unlock(&bnx2fc_dev_lock);
2049         rtnl_unlock();
2050         return 0;
2051
2052 if_create_err:
2053         destroy_workqueue(hba->timer_work_queue);
2054 ifput_err:
2055         bnx2fc_interface_put(hba);
2056 netdev_err:
2057         module_put(THIS_MODULE);
2058 mod_err:
2059         mutex_unlock(&bnx2fc_dev_lock);
2060         rtnl_unlock();
2061         return rc;
2062 }
2063
2064 /**
2065  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc adapter instance
2066  *
2067  * @cnic:       Pointer to cnic device instance
2068  *
2069  **/
2070 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2071 {
2072         struct list_head *list;
2073         struct list_head *temp;
2074         struct bnx2fc_hba *hba;
2075
2076         /* Called with bnx2fc_dev_lock held */
2077         list_for_each_safe(list, temp, &adapter_list) {
2078                 hba = (struct bnx2fc_hba *)list;
2079                 if (hba->cnic == cnic)
2080                         return hba;
2081         }
2082         return NULL;
2083 }
2084
2085 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev)
2086 {
2087         struct list_head *list;
2088         struct list_head *temp;
2089         struct bnx2fc_hba *hba;
2090
2091         /* Called with bnx2fc_dev_lock held */
2092         list_for_each_safe(list, temp, &adapter_list) {
2093                 hba = (struct bnx2fc_hba *)list;
2094                 if (hba->phys_dev == phys_dev)
2095                         return hba;
2096         }
2097         printk(KERN_ERR PFX "hba_lookup: hba NULL\n");
2098         return NULL;
2099 }
2100
2101 /**
2102  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2103  *
2104  * @dev         cnic device handle
2105  */
2106 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2107 {
2108         struct bnx2fc_hba *hba;
2109
2110         BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2111
2112         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2113                 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2114                         dev->netdev->name, dev->flags);
2115                 return;
2116         }
2117
2118         mutex_lock(&bnx2fc_dev_lock);
2119         hba = bnx2fc_find_hba_for_cnic(dev);
2120         if (!hba) {
2121                 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2122                        dev);
2123                 mutex_unlock(&bnx2fc_dev_lock);
2124                 return;
2125         }
2126
2127         list_del_init(&hba->link);
2128         adapter_count--;
2129
2130         if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
2131                 /* destroy not called yet, move to quiesced list */
2132                 bnx2fc_netdev_cleanup(hba);
2133                 bnx2fc_if_destroy(hba->ctlr.lp);
2134         }
2135         mutex_unlock(&bnx2fc_dev_lock);
2136
2137         bnx2fc_ulp_stop(hba);
2138         /* unregister cnic device */
2139         if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2140                 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2141         bnx2fc_interface_destroy(hba);
2142 }
2143
2144 /**
2145  * bnx2fc_fcoe_reset - Resets the fcoe
2146  *
2147  * @shost: shost the reset is from
2148  *
2149  * Returns: always 0
2150  */
2151 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2152 {
2153         struct fc_lport *lport = shost_priv(shost);
2154         fc_lport_reset(lport);
2155         return 0;
2156 }
2157
2158
2159 static bool bnx2fc_match(struct net_device *netdev)
2160 {
2161         mutex_lock(&bnx2fc_dev_lock);
2162         if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2163                 struct net_device *phys_dev = vlan_dev_real_dev(netdev);
2164
2165                 if (bnx2fc_hba_lookup(phys_dev)) {
2166                         mutex_unlock(&bnx2fc_dev_lock);
2167                         return true;
2168                 }
2169         }
2170         mutex_unlock(&bnx2fc_dev_lock);
2171         return false;
2172 }
2173
2174
2175 static struct fcoe_transport bnx2fc_transport = {
2176         .name = {"bnx2fc"},
2177         .attached = false,
2178         .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2179         .match = bnx2fc_match,
2180         .create = bnx2fc_create,
2181         .destroy = bnx2fc_destroy,
2182         .enable = bnx2fc_enable,
2183         .disable = bnx2fc_disable,
2184 };
2185
2186 /**
2187  * bnx2fc_percpu_thread_create - Create a receive thread for an
2188  *                               online CPU
2189  *
2190  * @cpu: cpu index for the online cpu
2191  */
2192 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2193 {
2194         struct bnx2fc_percpu_s *p;
2195         struct task_struct *thread;
2196
2197         p = &per_cpu(bnx2fc_percpu, cpu);
2198
2199         thread = kthread_create(bnx2fc_percpu_io_thread,
2200                                 (void *)p,
2201                                 "bnx2fc_thread/%d", cpu);
2202         /* bind thread to the cpu */
2203         if (likely(!IS_ERR(p->iothread))) {
2204                 kthread_bind(thread, cpu);
2205                 p->iothread = thread;
2206                 wake_up_process(thread);
2207         }
2208 }
2209
2210 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2211 {
2212         struct bnx2fc_percpu_s *p;
2213         struct task_struct *thread;
2214         struct bnx2fc_work *work, *tmp;
2215         LIST_HEAD(work_list);
2216
2217         BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2218
2219         /* Prevent any new work from being queued for this CPU */
2220         p = &per_cpu(bnx2fc_percpu, cpu);
2221         spin_lock_bh(&p->fp_work_lock);
2222         thread = p->iothread;
2223         p->iothread = NULL;
2224
2225
2226         /* Free all work in the list */
2227         list_for_each_entry_safe(work, tmp, &work_list, list) {
2228                 list_del_init(&work->list);
2229                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2230                 kfree(work);
2231         }
2232
2233         spin_unlock_bh(&p->fp_work_lock);
2234
2235         if (thread)
2236                 kthread_stop(thread);
2237 }
2238
2239 /**
2240  * bnx2fc_cpu_callback - Handler for CPU hotplug events
2241  *
2242  * @nfb:    The callback data block
2243  * @action: The event triggering the callback
2244  * @hcpu:   The index of the CPU that the event is for
2245  *
2246  * This creates or destroys per-CPU data for fcoe
2247  *
2248  * Returns NOTIFY_OK always.
2249  */
2250 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2251                              unsigned long action, void *hcpu)
2252 {
2253         unsigned cpu = (unsigned long)hcpu;
2254
2255         switch (action) {
2256         case CPU_ONLINE:
2257         case CPU_ONLINE_FROZEN:
2258                 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2259                 bnx2fc_percpu_thread_create(cpu);
2260                 break;
2261         case CPU_DEAD:
2262         case CPU_DEAD_FROZEN:
2263                 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2264                 bnx2fc_percpu_thread_destroy(cpu);
2265                 break;
2266         default:
2267                 break;
2268         }
2269         return NOTIFY_OK;
2270 }
2271
2272 /**
2273  * bnx2fc_mod_init - module init entry point
2274  *
2275  * Initialize driver wide global data structures, and register
2276  * with cnic module
2277  **/
2278 static int __init bnx2fc_mod_init(void)
2279 {
2280         struct fcoe_percpu_s *bg;
2281         struct task_struct *l2_thread;
2282         int rc = 0;
2283         unsigned int cpu = 0;
2284         struct bnx2fc_percpu_s *p;
2285
2286         printk(KERN_INFO PFX "%s", version);
2287
2288         /* register as a fcoe transport */
2289         rc = fcoe_transport_attach(&bnx2fc_transport);
2290         if (rc) {
2291                 printk(KERN_ERR "failed to register an fcoe transport, check "
2292                         "if libfcoe is loaded\n");
2293                 goto out;
2294         }
2295
2296         INIT_LIST_HEAD(&adapter_list);
2297         mutex_init(&bnx2fc_dev_lock);
2298         adapter_count = 0;
2299
2300         /* Attach FC transport template */
2301         rc = bnx2fc_attach_transport();
2302         if (rc)
2303                 goto detach_ft;
2304
2305         bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2306         if (!bnx2fc_wq) {
2307                 rc = -ENOMEM;
2308                 goto release_bt;
2309         }
2310
2311         bg = &bnx2fc_global;
2312         skb_queue_head_init(&bg->fcoe_rx_list);
2313         l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2314                                    (void *)bg,
2315                                    "bnx2fc_l2_thread");
2316         if (IS_ERR(l2_thread)) {
2317                 rc = PTR_ERR(l2_thread);
2318                 goto free_wq;
2319         }
2320         wake_up_process(l2_thread);
2321         spin_lock_bh(&bg->fcoe_rx_list.lock);
2322         bg->thread = l2_thread;
2323         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2324
2325         for_each_possible_cpu(cpu) {
2326                 p = &per_cpu(bnx2fc_percpu, cpu);
2327                 INIT_LIST_HEAD(&p->work_list);
2328                 spin_lock_init(&p->fp_work_lock);
2329         }
2330
2331         for_each_online_cpu(cpu) {
2332                 bnx2fc_percpu_thread_create(cpu);
2333         }
2334
2335         /* Initialize per CPU interrupt thread */
2336         register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2337
2338         cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2339
2340         return 0;
2341
2342 free_wq:
2343         destroy_workqueue(bnx2fc_wq);
2344 release_bt:
2345         bnx2fc_release_transport();
2346 detach_ft:
2347         fcoe_transport_detach(&bnx2fc_transport);
2348 out:
2349         return rc;
2350 }
2351
2352 static void __exit bnx2fc_mod_exit(void)
2353 {
2354         LIST_HEAD(to_be_deleted);
2355         struct bnx2fc_hba *hba, *next;
2356         struct fcoe_percpu_s *bg;
2357         struct task_struct *l2_thread;
2358         struct sk_buff *skb;
2359         unsigned int cpu = 0;
2360
2361         /*
2362          * NOTE: Since cnic calls register_driver routine rtnl_lock,
2363          * it will have higher precedence than bnx2fc_dev_lock.
2364          * unregister_device() cannot be called with bnx2fc_dev_lock
2365          * held.
2366          */
2367         mutex_lock(&bnx2fc_dev_lock);
2368         list_splice(&adapter_list, &to_be_deleted);
2369         INIT_LIST_HEAD(&adapter_list);
2370         adapter_count = 0;
2371         mutex_unlock(&bnx2fc_dev_lock);
2372
2373         /* Unregister with cnic */
2374         list_for_each_entry_safe(hba, next, &to_be_deleted, link) {
2375                 list_del_init(&hba->link);
2376                 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p, kref = %d\n",
2377                         hba, atomic_read(&hba->kref.refcount));
2378                 bnx2fc_ulp_stop(hba);
2379                 /* unregister cnic device */
2380                 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2381                                        &hba->reg_with_cnic))
2382                         hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2383                 bnx2fc_interface_destroy(hba);
2384         }
2385         cnic_unregister_driver(CNIC_ULP_FCOE);
2386
2387         /* Destroy global thread */
2388         bg = &bnx2fc_global;
2389         spin_lock_bh(&bg->fcoe_rx_list.lock);
2390         l2_thread = bg->thread;
2391         bg->thread = NULL;
2392         while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2393                 kfree_skb(skb);
2394
2395         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2396
2397         if (l2_thread)
2398                 kthread_stop(l2_thread);
2399
2400         unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2401
2402         /* Destroy per cpu threads */
2403         for_each_online_cpu(cpu) {
2404                 bnx2fc_percpu_thread_destroy(cpu);
2405         }
2406
2407         destroy_workqueue(bnx2fc_wq);
2408         /*
2409          * detach from scsi transport
2410          * must happen after all destroys are done
2411          */
2412         bnx2fc_release_transport();
2413
2414         /* detach from fcoe transport */
2415         fcoe_transport_detach(&bnx2fc_transport);
2416 }
2417
2418 module_init(bnx2fc_mod_init);
2419 module_exit(bnx2fc_mod_exit);
2420
2421 static struct fc_function_template bnx2fc_transport_function = {
2422         .show_host_node_name = 1,
2423         .show_host_port_name = 1,
2424         .show_host_supported_classes = 1,
2425         .show_host_supported_fc4s = 1,
2426         .show_host_active_fc4s = 1,
2427         .show_host_maxframe_size = 1,
2428
2429         .show_host_port_id = 1,
2430         .show_host_supported_speeds = 1,
2431         .get_host_speed = fc_get_host_speed,
2432         .show_host_speed = 1,
2433         .show_host_port_type = 1,
2434         .get_host_port_state = fc_get_host_port_state,
2435         .show_host_port_state = 1,
2436         .show_host_symbolic_name = 1,
2437
2438         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2439                                 sizeof(struct bnx2fc_rport)),
2440         .show_rport_maxframe_size = 1,
2441         .show_rport_supported_classes = 1,
2442
2443         .show_host_fabric_name = 1,
2444         .show_starget_node_name = 1,
2445         .show_starget_port_name = 1,
2446         .show_starget_port_id = 1,
2447         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2448         .show_rport_dev_loss_tmo = 1,
2449         .get_fc_host_stats = bnx2fc_get_host_stats,
2450
2451         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2452
2453         .terminate_rport_io = fc_rport_terminate_io,
2454
2455         .vport_create = bnx2fc_vport_create,
2456         .vport_delete = bnx2fc_vport_destroy,
2457         .vport_disable = bnx2fc_vport_disable,
2458 };
2459
2460 static struct fc_function_template bnx2fc_vport_xport_function = {
2461         .show_host_node_name = 1,
2462         .show_host_port_name = 1,
2463         .show_host_supported_classes = 1,
2464         .show_host_supported_fc4s = 1,
2465         .show_host_active_fc4s = 1,
2466         .show_host_maxframe_size = 1,
2467
2468         .show_host_port_id = 1,
2469         .show_host_supported_speeds = 1,
2470         .get_host_speed = fc_get_host_speed,
2471         .show_host_speed = 1,
2472         .show_host_port_type = 1,
2473         .get_host_port_state = fc_get_host_port_state,
2474         .show_host_port_state = 1,
2475         .show_host_symbolic_name = 1,
2476
2477         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2478                                 sizeof(struct bnx2fc_rport)),
2479         .show_rport_maxframe_size = 1,
2480         .show_rport_supported_classes = 1,
2481
2482         .show_host_fabric_name = 1,
2483         .show_starget_node_name = 1,
2484         .show_starget_port_name = 1,
2485         .show_starget_port_id = 1,
2486         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2487         .show_rport_dev_loss_tmo = 1,
2488         .get_fc_host_stats = fc_get_host_stats,
2489         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2490         .terminate_rport_io = fc_rport_terminate_io,
2491 };
2492
2493 /**
2494  * scsi_host_template structure used while registering with SCSI-ml
2495  */
2496 static struct scsi_host_template bnx2fc_shost_template = {
2497         .module                 = THIS_MODULE,
2498         .name                   = "Broadcom Offload FCoE Initiator",
2499         .queuecommand           = bnx2fc_queuecommand,
2500         .eh_abort_handler       = bnx2fc_eh_abort,        /* abts */
2501         .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2502         .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2503         .eh_host_reset_handler  = fc_eh_host_reset,
2504         .slave_alloc            = fc_slave_alloc,
2505         .change_queue_depth     = fc_change_queue_depth,
2506         .change_queue_type      = fc_change_queue_type,
2507         .this_id                = -1,
2508         .cmd_per_lun            = 3,
2509         .can_queue              = (BNX2FC_MAX_OUTSTANDING_CMNDS/2),
2510         .use_clustering         = ENABLE_CLUSTERING,
2511         .sg_tablesize           = BNX2FC_MAX_BDS_PER_CMD,
2512         .max_sectors            = 512,
2513 };
2514
2515 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2516         .frame_send             = bnx2fc_xmit,
2517         .elsct_send             = bnx2fc_elsct_send,
2518         .fcp_abort_io           = bnx2fc_abort_io,
2519         .fcp_cleanup            = bnx2fc_cleanup,
2520         .rport_event_callback   = bnx2fc_rport_event_handler,
2521 };
2522
2523 /**
2524  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2525  *                      structure carrying callback function pointers
2526  */
2527 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2528         .owner                  = THIS_MODULE,
2529         .cnic_init              = bnx2fc_ulp_init,
2530         .cnic_exit              = bnx2fc_ulp_exit,
2531         .cnic_start             = bnx2fc_ulp_start,
2532         .cnic_stop              = bnx2fc_ulp_stop,
2533         .indicate_kcqes         = bnx2fc_indicate_kcqe,
2534         .indicate_netevent      = bnx2fc_indicate_netevent,
2535 };