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 - 2013 Broadcom Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation.
  11  *
  12  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
  13  */
  14
  15 #include "bnx2fc.h"
  16
  17 static struct list_head adapter_list;
  18 static struct list_head if_list;
  19 static u32 adapter_count;
  20 static DEFINE_MUTEX(bnx2fc_dev_lock);
  21 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
  22
  23 #define DRV_MODULE_NAME         "bnx2fc"
  24 #define DRV_MODULE_VERSION      BNX2FC_VERSION
  25 #define DRV_MODULE_RELDATE      "Mar 08, 2013"
  26
  27
  28 static char version[] =
  29                 "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \
  30                 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
  31
  32
  33 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
  34 MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver");
  35 MODULE_LICENSE("GPL");
  36 MODULE_VERSION(DRV_MODULE_VERSION);
  37
  38 #define BNX2FC_MAX_QUEUE_DEPTH  256
  39 #define BNX2FC_MIN_QUEUE_DEPTH  32
  40 #define FCOE_WORD_TO_BYTE  4
  41
  42 static struct scsi_transport_template   *bnx2fc_transport_template;
  43 static struct scsi_transport_template   *bnx2fc_vport_xport_template;
  44
  45 struct workqueue_struct *bnx2fc_wq;
  46
  47 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
  48  * Here the io threads are per cpu but the l2 thread is just one
  49  */
  50 struct fcoe_percpu_s bnx2fc_global;
  51 DEFINE_SPINLOCK(bnx2fc_global_lock);
  52
  53 static struct cnic_ulp_ops bnx2fc_cnic_cb;
  54 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
  55 static struct scsi_host_template bnx2fc_shost_template;
  56 static struct fc_function_template bnx2fc_transport_function;
  57 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
  58 static struct fc_function_template bnx2fc_vport_xport_function;
  59 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
  60 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
  61 static int bnx2fc_destroy(struct net_device *net_device);
  62 static int bnx2fc_enable(struct net_device *netdev);
  63 static int bnx2fc_disable(struct net_device *netdev);
  64
  65 /* fcoe_syfs control interface handlers */
  66 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
  67 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
  68
  69 static void bnx2fc_recv_frame(struct sk_buff *skb);
  70
  71 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
  72 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
  73 static int bnx2fc_lport_config(struct fc_lport *lport);
  74 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
  75 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
  76 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
  77 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
  78 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
  79 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
  80                                   struct device *parent, int npiv);
  81 static void bnx2fc_destroy_work(struct work_struct *work);
  82
  83 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
  84 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
  85                                                         *phys_dev);
  86 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
  87 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
  88
  89 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
  90 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
  91
  92 static void bnx2fc_port_shutdown(struct fc_lport *lport);
  93 static void bnx2fc_stop(struct bnx2fc_interface *interface);
  94 static int __init bnx2fc_mod_init(void);
  95 static void __exit bnx2fc_mod_exit(void);
  96
  97 unsigned int bnx2fc_debug_level;
  98 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
  99
 100 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
 101                              unsigned long action, void *hcpu);
 102 /* notification function for CPU hotplug events */
 103 static struct notifier_block bnx2fc_cpu_notifier = {
 104         .notifier_call = bnx2fc_cpu_callback,
 105 };
 106
 107 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
 108 {
 109         return ((struct bnx2fc_interface *)
 110                 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
 111 }
 112
 113 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
 114 {
 115         struct fcoe_ctlr_device *ctlr_dev =
 116                 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
 117         struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
 118         struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
 119
 120         fcf_dev->vlan_id = fcoe->vlan_id;
 121 }
 122
 123 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
 124 {
 125         struct fcoe_percpu_s *bg;
 126         struct fcoe_rcv_info *fr;
 127         struct sk_buff_head *list;
 128         struct sk_buff *skb, *next;
 129         struct sk_buff *head;
 130
 131         bg = &bnx2fc_global;
 132         spin_lock_bh(&bg->fcoe_rx_list.lock);
 133         list = &bg->fcoe_rx_list;
 134         head = list->next;
 135         for (skb = head; skb != (struct sk_buff *)list;
 136              skb = next) {
 137                 next = skb->next;
 138                 fr = fcoe_dev_from_skb(skb);
 139                 if (fr->fr_dev == lp) {
 140                         __skb_unlink(skb, list);
 141                         kfree_skb(skb);
 142                 }
 143         }
 144         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 145 }
 146
 147 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 148 {
 149         int rc;
 150         spin_lock(&bnx2fc_global_lock);
 151         rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
 152         spin_unlock(&bnx2fc_global_lock);
 153
 154         return rc;
 155 }
 156
 157 static void bnx2fc_abort_io(struct fc_lport *lport)
 158 {
 159         /*
 160          * This function is no-op for bnx2fc, but we do
 161          * not want to leave it as NULL either, as libfc
 162          * can call the default function which is
 163          * fc_fcp_abort_io.
 164          */
 165 }
 166
 167 static void bnx2fc_cleanup(struct fc_lport *lport)
 168 {
 169         struct fcoe_port *port = lport_priv(lport);
 170         struct bnx2fc_interface *interface = port->priv;
 171         struct bnx2fc_hba *hba = interface->hba;
 172         struct bnx2fc_rport *tgt;
 173         int i;
 174
 175         BNX2FC_MISC_DBG("Entered %s\n", __func__);
 176         mutex_lock(&hba->hba_mutex);
 177         spin_lock_bh(&hba->hba_lock);
 178         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
 179                 tgt = hba->tgt_ofld_list[i];
 180                 if (tgt) {
 181                         /* Cleanup IOs belonging to requested vport */
 182                         if (tgt->port == port) {
 183                                 spin_unlock_bh(&hba->hba_lock);
 184                                 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
 185                                 bnx2fc_flush_active_ios(tgt);
 186                                 spin_lock_bh(&hba->hba_lock);
 187                         }
 188                 }
 189         }
 190         spin_unlock_bh(&hba->hba_lock);
 191         mutex_unlock(&hba->hba_mutex);
 192 }
 193
 194 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
 195                              struct fc_frame *fp)
 196 {
 197         struct fc_rport_priv *rdata = tgt->rdata;
 198         struct fc_frame_header *fh;
 199         int rc = 0;
 200
 201         fh = fc_frame_header_get(fp);
 202         BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
 203                         "r_ctl = 0x%x\n", rdata->ids.port_id,
 204                         ntohs(fh->fh_ox_id), fh->fh_r_ctl);
 205         if ((fh->fh_type == FC_TYPE_ELS) &&
 206             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 207
 208                 switch (fc_frame_payload_op(fp)) {
 209                 case ELS_ADISC:
 210                         rc = bnx2fc_send_adisc(tgt, fp);
 211                         break;
 212                 case ELS_LOGO:
 213                         rc = bnx2fc_send_logo(tgt, fp);
 214                         break;
 215                 case ELS_RLS:
 216                         rc = bnx2fc_send_rls(tgt, fp);
 217                         break;
 218                 default:
 219                         break;
 220                 }
 221         } else if ((fh->fh_type ==  FC_TYPE_BLS) &&
 222             (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
 223                 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
 224         else {
 225                 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
 226                                 "rctl 0x%x thru non-offload path\n",
 227                                 fh->fh_type, fh->fh_r_ctl);
 228                 return -ENODEV;
 229         }
 230         if (rc)
 231                 return -ENOMEM;
 232         else
 233                 return 0;
 234 }
 235
 236 /**
 237  * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
 238  *
 239  * @lport:      the associated local port
 240  * @fp: the fc_frame to be transmitted
 241  */
 242 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
 243 {
 244         struct ethhdr           *eh;
 245         struct fcoe_crc_eof     *cp;
 246         struct sk_buff          *skb;
 247         struct fc_frame_header  *fh;
 248         struct bnx2fc_interface *interface;
 249         struct fcoe_ctlr        *ctlr;
 250         struct bnx2fc_hba *hba;
 251         struct fcoe_port        *port;
 252         struct fcoe_hdr         *hp;
 253         struct bnx2fc_rport     *tgt;
 254         struct fc_stats         *stats;
 255         u8                      sof, eof;
 256         u32                     crc;
 257         unsigned int            hlen, tlen, elen;
 258         int                     wlen, rc = 0;
 259
 260         port = (struct fcoe_port *)lport_priv(lport);
 261         interface = port->priv;
 262         ctlr = bnx2fc_to_ctlr(interface);
 263         hba = interface->hba;
 264
 265         fh = fc_frame_header_get(fp);
 266
 267         skb = fp_skb(fp);
 268         if (!lport->link_up) {
 269                 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
 270                 kfree_skb(skb);
 271                 return 0;
 272         }
 273
 274         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 275                 if (!ctlr->sel_fcf) {
 276                         BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
 277                         kfree_skb(skb);
 278                         return -EINVAL;
 279                 }
 280                 if (fcoe_ctlr_els_send(ctlr, lport, skb))
 281                         return 0;
 282         }
 283
 284         sof = fr_sof(fp);
 285         eof = fr_eof(fp);
 286
 287         /*
 288          * Snoop the frame header to check if the frame is for
 289          * an offloaded session
 290          */
 291         /*
 292          * tgt_ofld_list access is synchronized using
 293          * both hba mutex and hba lock. Atleast hba mutex or
 294          * hba lock needs to be held for read access.
 295          */
 296
 297         spin_lock_bh(&hba->hba_lock);
 298         tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
 299         if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
 300                 /* This frame is for offloaded session */
 301                 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
 302                                 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
 303                 spin_unlock_bh(&hba->hba_lock);
 304                 rc = bnx2fc_xmit_l2_frame(tgt, fp);
 305                 if (rc != -ENODEV) {
 306                         kfree_skb(skb);
 307                         return rc;
 308                 }
 309         } else {
 310                 spin_unlock_bh(&hba->hba_lock);
 311         }
 312
 313         elen = sizeof(struct ethhdr);
 314         hlen = sizeof(struct fcoe_hdr);
 315         tlen = sizeof(struct fcoe_crc_eof);
 316         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 317
 318         skb->ip_summed = CHECKSUM_NONE;
 319         crc = fcoe_fc_crc(fp);
 320
 321         /* copy port crc and eof to the skb buff */
 322         if (skb_is_nonlinear(skb)) {
 323                 skb_frag_t *frag;
 324                 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
 325                         kfree_skb(skb);
 326                         return -ENOMEM;
 327                 }
 328                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
 329                 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
 330         } else {
 331                 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
 332         }
 333
 334         memset(cp, 0, sizeof(*cp));
 335         cp->fcoe_eof = eof;
 336         cp->fcoe_crc32 = cpu_to_le32(~crc);
 337         if (skb_is_nonlinear(skb)) {
 338                 kunmap_atomic(cp);
 339                 cp = NULL;
 340         }
 341
 342         /* adjust skb network/transport offsets to match mac/fcoe/port */
 343         skb_push(skb, elen + hlen);
 344         skb_reset_mac_header(skb);
 345         skb_reset_network_header(skb);
 346         skb->mac_len = elen;
 347         skb->protocol = htons(ETH_P_FCOE);
 348         skb->dev = interface->netdev;
 349
 350         /* fill up mac and fcoe headers */
 351         eh = eth_hdr(skb);
 352         eh->h_proto = htons(ETH_P_FCOE);
 353         if (ctlr->map_dest)
 354                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
 355         else
 356                 /* insert GW address */
 357                 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
 358
 359         if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
 360                 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
 361         else
 362                 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
 363
 364         hp = (struct fcoe_hdr *)(eh + 1);
 365         memset(hp, 0, sizeof(*hp));
 366         if (FC_FCOE_VER)
 367                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
 368         hp->fcoe_sof = sof;
 369
 370         /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
 371         if (lport->seq_offload && fr_max_payload(fp)) {
 372                 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
 373                 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
 374         } else {
 375                 skb_shinfo(skb)->gso_type = 0;
 376                 skb_shinfo(skb)->gso_size = 0;
 377         }
 378
 379         /*update tx stats */
 380         stats = per_cpu_ptr(lport->stats, get_cpu());
 381         stats->TxFrames++;
 382         stats->TxWords += wlen;
 383         put_cpu();
 384
 385         /* send down to lld */
 386         fr_dev(fp) = lport;
 387         if (port->fcoe_pending_queue.qlen)
 388                 fcoe_check_wait_queue(lport, skb);
 389         else if (fcoe_start_io(skb))
 390                 fcoe_check_wait_queue(lport, skb);
 391
 392         return 0;
 393 }
 394
 395 /**
 396  * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
 397  *
 398  * @skb:        the receive socket buffer
 399  * @dev:        associated net device
 400  * @ptype:      context
 401  * @olddev:     last device
 402  *
 403  * This function receives the packet and builds FC frame and passes it up
 404  */
 405 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
 406                 struct packet_type *ptype, struct net_device *olddev)
 407 {
 408         struct fc_lport *lport;
 409         struct bnx2fc_interface *interface;
 410         struct fcoe_ctlr *ctlr;
 411         struct fc_frame_header *fh;
 412         struct fcoe_rcv_info *fr;
 413         struct fcoe_percpu_s *bg;
 414         unsigned short oxid;
 415
 416         interface = container_of(ptype, struct bnx2fc_interface,
 417                                  fcoe_packet_type);
 418         ctlr = bnx2fc_to_ctlr(interface);
 419         lport = ctlr->lp;
 420
 421         if (unlikely(lport == NULL)) {
 422                 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
 423                 goto err;
 424         }
 425
 426         if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
 427                 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
 428                 goto err;
 429         }
 430
 431         /*
 432          * Check for minimum frame length, and make sure required FCoE
 433          * and FC headers are pulled into the linear data area.
 434          */
 435         if (unlikely((skb->len < FCOE_MIN_FRAME) ||
 436             !pskb_may_pull(skb, FCOE_HEADER_LEN)))
 437                 goto err;
 438
 439         skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
 440         fh = (struct fc_frame_header *) skb_transport_header(skb);
 441
 442         oxid = ntohs(fh->fh_ox_id);
 443
 444         fr = fcoe_dev_from_skb(skb);
 445         fr->fr_dev = lport;
 446
 447         bg = &bnx2fc_global;
 448         spin_lock(&bg->fcoe_rx_list.lock);
 449
 450         __skb_queue_tail(&bg->fcoe_rx_list, skb);
 451         if (bg->fcoe_rx_list.qlen == 1)
 452                 wake_up_process(bg->thread);
 453
 454         spin_unlock(&bg->fcoe_rx_list.lock);
 455
 456         return 0;
 457 err:
 458         kfree_skb(skb);
 459         return -1;
 460 }
 461
 462 static int bnx2fc_l2_rcv_thread(void *arg)
 463 {
 464         struct fcoe_percpu_s *bg = arg;
 465         struct sk_buff *skb;
 466
 467         set_user_nice(current, -20);
 468         set_current_state(TASK_INTERRUPTIBLE);
 469         while (!kthread_should_stop()) {
 470                 schedule();
 471                 spin_lock_bh(&bg->fcoe_rx_list.lock);
 472                 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
 473                         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 474                         bnx2fc_recv_frame(skb);
 475                         spin_lock_bh(&bg->fcoe_rx_list.lock);
 476                 }
 477                 __set_current_state(TASK_INTERRUPTIBLE);
 478                 spin_unlock_bh(&bg->fcoe_rx_list.lock);
 479         }
 480         __set_current_state(TASK_RUNNING);
 481         return 0;
 482 }
 483
 484
 485 static void bnx2fc_recv_frame(struct sk_buff *skb)
 486 {
 487         u32 fr_len;
 488         struct fc_lport *lport;
 489         struct fcoe_rcv_info *fr;
 490         struct fc_stats *stats;
 491         struct fc_frame_header *fh;
 492         struct fcoe_crc_eof crc_eof;
 493         struct fc_frame *fp;
 494         struct fc_lport *vn_port;
 495         struct fcoe_port *port;
 496         u8 *mac = NULL;
 497         u8 *dest_mac = NULL;
 498         struct fcoe_hdr *hp;
 499
 500         fr = fcoe_dev_from_skb(skb);
 501         lport = fr->fr_dev;
 502         if (unlikely(lport == NULL)) {
 503                 printk(KERN_ERR PFX "Invalid lport struct\n");
 504                 kfree_skb(skb);
 505                 return;
 506         }
 507
 508         if (skb_is_nonlinear(skb))
 509                 skb_linearize(skb);
 510         mac = eth_hdr(skb)->h_source;
 511         dest_mac = eth_hdr(skb)->h_dest;
 512
 513         /* Pull the header */
 514         hp = (struct fcoe_hdr *) skb_network_header(skb);
 515         fh = (struct fc_frame_header *) skb_transport_header(skb);
 516         skb_pull(skb, sizeof(struct fcoe_hdr));
 517         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
 518
 519         stats = per_cpu_ptr(lport->stats, get_cpu());
 520         stats->RxFrames++;
 521         stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
 522
 523         fp = (struct fc_frame *)skb;
 524         fc_frame_init(fp);
 525         fr_dev(fp) = lport;
 526         fr_sof(fp) = hp->fcoe_sof;
 527         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
 528                 put_cpu();
 529                 kfree_skb(skb);
 530                 return;
 531         }
 532         fr_eof(fp) = crc_eof.fcoe_eof;
 533         fr_crc(fp) = crc_eof.fcoe_crc32;
 534         if (pskb_trim(skb, fr_len)) {
 535                 put_cpu();
 536                 kfree_skb(skb);
 537                 return;
 538         }
 539
 540         fh = fc_frame_header_get(fp);
 541
 542         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
 543         if (vn_port) {
 544                 port = lport_priv(vn_port);
 545                 if (compare_ether_addr(port->data_src_addr, dest_mac)
 546                     != 0) {
 547                         BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
 548                         put_cpu();
 549                         kfree_skb(skb);
 550                         return;
 551                 }
 552         }
 553         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
 554             fh->fh_type == FC_TYPE_FCP) {
 555                 /* Drop FCP data. We dont this in L2 path */
 556                 put_cpu();
 557                 kfree_skb(skb);
 558                 return;
 559         }
 560         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
 561             fh->fh_type == FC_TYPE_ELS) {
 562                 switch (fc_frame_payload_op(fp)) {
 563                 case ELS_LOGO:
 564                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
 565                                 /* drop non-FIP LOGO */
 566                                 put_cpu();
 567                                 kfree_skb(skb);
 568                                 return;
 569                         }
 570                         break;
 571                 }
 572         }
 573
 574         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
 575                 /* Drop incoming ABTS */
 576                 put_cpu();
 577                 kfree_skb(skb);
 578                 return;
 579         }
 580
 581         if (le32_to_cpu(fr_crc(fp)) !=
 582                         ~crc32(~0, skb->data, fr_len)) {
 583                 if (stats->InvalidCRCCount < 5)
 584                         printk(KERN_WARNING PFX "dropping frame with "
 585                                "CRC error\n");
 586                 stats->InvalidCRCCount++;
 587                 put_cpu();
 588                 kfree_skb(skb);
 589                 return;
 590         }
 591         put_cpu();
 592         fc_exch_recv(lport, fp);
 593 }
 594
 595 /**
 596  * bnx2fc_percpu_io_thread - thread per cpu for ios
 597  *
 598  * @arg:        ptr to bnx2fc_percpu_info structure
 599  */
 600 int bnx2fc_percpu_io_thread(void *arg)
 601 {
 602         struct bnx2fc_percpu_s *p = arg;
 603         struct bnx2fc_work *work, *tmp;
 604         LIST_HEAD(work_list);
 605
 606         set_user_nice(current, -20);
 607         set_current_state(TASK_INTERRUPTIBLE);
 608         while (!kthread_should_stop()) {
 609                 schedule();
 610                 spin_lock_bh(&p->fp_work_lock);
 611                 while (!list_empty(&p->work_list)) {
 612                         list_splice_init(&p->work_list, &work_list);
 613                         spin_unlock_bh(&p->fp_work_lock);
 614
 615                         list_for_each_entry_safe(work, tmp, &work_list, list) {
 616                                 list_del_init(&work->list);
 617                                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
 618                                 kfree(work);
 619                         }
 620
 621                         spin_lock_bh(&p->fp_work_lock);
 622                 }
 623                 __set_current_state(TASK_INTERRUPTIBLE);
 624                 spin_unlock_bh(&p->fp_work_lock);
 625         }
 626         __set_current_state(TASK_RUNNING);
 627
 628         return 0;
 629 }
 630
 631 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
 632 {
 633         struct fc_host_statistics *bnx2fc_stats;
 634         struct fc_lport *lport = shost_priv(shost);
 635         struct fcoe_port *port = lport_priv(lport);
 636         struct bnx2fc_interface *interface = port->priv;
 637         struct bnx2fc_hba *hba = interface->hba;
 638         struct fcoe_statistics_params *fw_stats;
 639         int rc = 0;
 640
 641         fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
 642         if (!fw_stats)
 643                 return NULL;
 644
 645         bnx2fc_stats = fc_get_host_stats(shost);
 646
 647         init_completion(&hba->stat_req_done);
 648         if (bnx2fc_send_stat_req(hba))
 649                 return bnx2fc_stats;
 650         rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
 651         if (!rc) {
 652                 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
 653                 return bnx2fc_stats;
 654         }
 655         BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
 656         bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
 657         BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
 658         bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
 659         BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
 660         bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
 661         BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
 662         bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
 663         BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
 664         bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
 665
 666         bnx2fc_stats->dumped_frames = 0;
 667         bnx2fc_stats->lip_count = 0;
 668         bnx2fc_stats->nos_count = 0;
 669         bnx2fc_stats->loss_of_sync_count = 0;
 670         bnx2fc_stats->loss_of_signal_count = 0;
 671         bnx2fc_stats->prim_seq_protocol_err_count = 0;
 672
 673         memcpy(&hba->prev_stats, hba->stats_buffer,
 674                sizeof(struct fcoe_statistics_params));
 675         return bnx2fc_stats;
 676 }
 677
 678 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
 679 {
 680         struct fcoe_port *port = lport_priv(lport);
 681         struct bnx2fc_interface *interface = port->priv;
 682         struct bnx2fc_hba *hba = interface->hba;
 683         struct Scsi_Host *shost = lport->host;
 684         int rc = 0;
 685
 686         shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
 687         shost->max_lun = BNX2FC_MAX_LUN;
 688         shost->max_id = BNX2FC_MAX_FCP_TGT;
 689         shost->max_channel = 0;
 690         if (lport->vport)
 691                 shost->transportt = bnx2fc_vport_xport_template;
 692         else
 693                 shost->transportt = bnx2fc_transport_template;
 694
 695         /* Add the new host to SCSI-ml */
 696         rc = scsi_add_host(lport->host, dev);
 697         if (rc) {
 698                 printk(KERN_ERR PFX "Error on scsi_add_host\n");
 699                 return rc;
 700         }
 701         if (!lport->vport)
 702                 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
 703         snprintf(fc_host_symbolic_name(lport->host), 256,
 704                  "%s (Broadcom %s) v%s over %s",
 705                 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
 706                 interface->netdev->name);
 707
 708         return 0;
 709 }
 710
 711 static int bnx2fc_link_ok(struct fc_lport *lport)
 712 {
 713         struct fcoe_port *port = lport_priv(lport);
 714         struct bnx2fc_interface *interface = port->priv;
 715         struct bnx2fc_hba *hba = interface->hba;
 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->phys_dev->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, struct net_device *netdev)
 744 {
 745         struct bnx2fc_hba *hba;
 746         struct bnx2fc_interface *interface;
 747         struct fcoe_ctlr *ctlr;
 748         struct fcoe_port *port;
 749         u64 wwnn, wwpn;
 750
 751         port = lport_priv(lport);
 752         interface = port->priv;
 753         ctlr = bnx2fc_to_ctlr(interface);
 754         hba = interface->hba;
 755
 756         /* require support for get_pauseparam ethtool op. */
 757         if (!hba->phys_dev->ethtool_ops ||
 758             !hba->phys_dev->ethtool_ops->get_pauseparam)
 759                 return -EOPNOTSUPP;
 760
 761         if (fc_set_mfs(lport, BNX2FC_MFS))
 762                 return -EINVAL;
 763
 764         skb_queue_head_init(&port->fcoe_pending_queue);
 765         port->fcoe_pending_queue_active = 0;
 766         setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
 767
 768         fcoe_link_speed_update(lport);
 769
 770         if (!lport->vport) {
 771                 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
 772                         wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
 773                                                  1, 0);
 774                 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
 775                 fc_set_wwnn(lport, wwnn);
 776
 777                 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
 778                         wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
 779                                                  2, 0);
 780
 781                 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
 782                 fc_set_wwpn(lport, wwpn);
 783         }
 784
 785         return 0;
 786 }
 787
 788 static void bnx2fc_destroy_timer(unsigned long data)
 789 {
 790         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
 791
 792         printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
 793                "Destroy compl not received!!\n");
 794         set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
 795         wake_up_interruptible(&hba->destroy_wait);
 796 }
 797
 798 /**
 799  * bnx2fc_indicate_netevent - Generic netdev event handler
 800  *
 801  * @context:    adapter structure pointer
 802  * @event:      event type
 803  * @vlan_id:    vlan id - associated vlan id with this event
 804  *
 805  * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
 806  * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
 807  */
 808 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
 809                                      u16 vlan_id)
 810 {
 811         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
 812         struct fcoe_ctlr_device *cdev;
 813         struct fc_lport *lport;
 814         struct fc_lport *vport;
 815         struct bnx2fc_interface *interface, *tmp;
 816         struct fcoe_ctlr *ctlr;
 817         int wait_for_upload = 0;
 818         u32 link_possible = 1;
 819
 820         if (vlan_id != 0 && event != NETDEV_UNREGISTER)
 821                 return;
 822
 823         switch (event) {
 824         case NETDEV_UP:
 825                 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
 826                         printk(KERN_ERR "indicate_netevent: "\
 827                                         "hba is not UP!!\n");
 828                 break;
 829
 830         case NETDEV_DOWN:
 831                 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 832                 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
 833                 link_possible = 0;
 834                 break;
 835
 836         case NETDEV_GOING_DOWN:
 837                 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 838                 link_possible = 0;
 839                 break;
 840
 841         case NETDEV_CHANGE:
 842                 break;
 843
 844         case NETDEV_UNREGISTER:
 845                 if (!vlan_id)
 846                         return;
 847                 mutex_lock(&bnx2fc_dev_lock);
 848                 list_for_each_entry_safe(interface, tmp, &if_list, list) {
 849                         if (interface->hba == hba &&
 850                             interface->vlan_id == (vlan_id & VLAN_VID_MASK))
 851                                 __bnx2fc_destroy(interface);
 852                 }
 853                 mutex_unlock(&bnx2fc_dev_lock);
 854                 return;
 855
 856         default:
 857                 printk(KERN_ERR PFX "Unknown netevent %ld", event);
 858                 return;
 859         }
 860
 861         mutex_lock(&bnx2fc_dev_lock);
 862         list_for_each_entry(interface, &if_list, list) {
 863
 864                 if (interface->hba != hba)
 865                         continue;
 866
 867                 ctlr = bnx2fc_to_ctlr(interface);
 868                 lport = ctlr->lp;
 869                 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
 870                                 interface->netdev->name, event);
 871
 872                 fcoe_link_speed_update(lport);
 873
 874                 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
 875
 876                 if (link_possible && !bnx2fc_link_ok(lport)) {
 877                         switch (cdev->enabled) {
 878                         case FCOE_CTLR_DISABLED:
 879                                 pr_info("Link up while interface is disabled.\n");
 880                                 break;
 881                         case FCOE_CTLR_ENABLED:
 882                         case FCOE_CTLR_UNUSED:
 883                                 /* Reset max recv frame size to default */
 884                                 fc_set_mfs(lport, BNX2FC_MFS);
 885                                 /*
 886                                  * ctlr link up will only be handled during
 887                                  * enable to avoid sending discovery
 888                                  * solicitation on a stale vlan
 889                                  */
 890                                 if (interface->enabled)
 891                                         fcoe_ctlr_link_up(ctlr);
 892                         };
 893                 } else if (fcoe_ctlr_link_down(ctlr)) {
 894                         switch (cdev->enabled) {
 895                         case FCOE_CTLR_DISABLED:
 896                                 pr_info("Link down while interface is disabled.\n");
 897                                 break;
 898                         case FCOE_CTLR_ENABLED:
 899                         case FCOE_CTLR_UNUSED:
 900                                 mutex_lock(&lport->lp_mutex);
 901                                 list_for_each_entry(vport, &lport->vports, list)
 902                                         fc_host_port_type(vport->host) =
 903                                         FC_PORTTYPE_UNKNOWN;
 904                                 mutex_unlock(&lport->lp_mutex);
 905                                 fc_host_port_type(lport->host) =
 906                                         FC_PORTTYPE_UNKNOWN;
 907                                 per_cpu_ptr(lport->stats,
 908                                             get_cpu())->LinkFailureCount++;
 909                                 put_cpu();
 910                                 fcoe_clean_pending_queue(lport);
 911                                 wait_for_upload = 1;
 912                         };
 913                 }
 914         }
 915         mutex_unlock(&bnx2fc_dev_lock);
 916
 917         if (wait_for_upload) {
 918                 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
 919                 init_waitqueue_head(&hba->shutdown_wait);
 920                 BNX2FC_MISC_DBG("indicate_netevent "
 921                                 "num_ofld_sess = %d\n",
 922                                 hba->num_ofld_sess);
 923                 hba->wait_for_link_down = 1;
 924                 wait_event_interruptible(hba->shutdown_wait,
 925                                          (hba->num_ofld_sess == 0));
 926                 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
 927                                 hba->num_ofld_sess);
 928                 hba->wait_for_link_down = 0;
 929
 930                 if (signal_pending(current))
 931                         flush_signals(current);
 932         }
 933 }
 934
 935 static int bnx2fc_libfc_config(struct fc_lport *lport)
 936 {
 937
 938         /* Set the function pointers set by bnx2fc driver */
 939         memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
 940                 sizeof(struct libfc_function_template));
 941         fc_elsct_init(lport);
 942         fc_exch_init(lport);
 943         fc_rport_init(lport);
 944         fc_disc_init(lport);
 945         fc_disc_config(lport, lport);
 946         return 0;
 947 }
 948
 949 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
 950 {
 951         int fcoe_min_xid, fcoe_max_xid;
 952
 953         fcoe_min_xid = hba->max_xid + 1;
 954         if (nr_cpu_ids <= 2)
 955                 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
 956         else
 957                 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
 958         if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
 959                                fcoe_max_xid, NULL)) {
 960                 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
 961                 return -ENOMEM;
 962         }
 963
 964         return 0;
 965 }
 966
 967 static int bnx2fc_lport_config(struct fc_lport *lport)
 968 {
 969         lport->link_up = 0;
 970         lport->qfull = 0;
 971         lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
 972         lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
 973         lport->e_d_tov = 2 * 1000;
 974         lport->r_a_tov = 10 * 1000;
 975
 976         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
 977                                 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
 978         lport->does_npiv = 1;
 979
 980         memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
 981         lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
 982
 983         /* alloc stats structure */
 984         if (fc_lport_init_stats(lport))
 985                 return -ENOMEM;
 986
 987         /* Finish fc_lport configuration */
 988         fc_lport_config(lport);
 989
 990         return 0;
 991 }
 992
 993 /**
 994  * bnx2fc_fip_recv - handle a received FIP frame.
 995  *
 996  * @skb: the received skb
 997  * @dev: associated &net_device
 998  * @ptype: the &packet_type structure which was used to register this handler.
 999  * @orig_dev: original receive &net_device, in case @ dev is a bond.
1000  *
1001  * Returns: 0 for success
1002  */
1003 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1004                            struct packet_type *ptype,
1005                            struct net_device *orig_dev)
1006 {
1007         struct bnx2fc_interface *interface;
1008         struct fcoe_ctlr *ctlr;
1009         interface = container_of(ptype, struct bnx2fc_interface,
1010                                  fip_packet_type);
1011         ctlr = bnx2fc_to_ctlr(interface);
1012         fcoe_ctlr_recv(ctlr, skb);
1013         return 0;
1014 }
1015
1016 /**
1017  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1018  *
1019  * @fip: FCoE controller.
1020  * @old: Unicast MAC address to delete if the MAC is non-zero.
1021  * @new: Unicast MAC address to add.
1022  *
1023  * Remove any previously-set unicast MAC filter.
1024  * Add secondary FCoE MAC address filter for our OUI.
1025  */
1026 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1027 {
1028         struct fcoe_port *port = lport_priv(lport);
1029
1030         memcpy(port->data_src_addr, addr, ETH_ALEN);
1031 }
1032
1033 /**
1034  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1035  *
1036  * @lport: libfc port
1037  */
1038 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1039 {
1040         struct fcoe_port *port;
1041
1042         port = (struct fcoe_port *)lport_priv(lport);
1043         return port->data_src_addr;
1044 }
1045
1046 /**
1047  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1048  *
1049  * @fip: FCoE controller.
1050  * @skb: FIP Packet.
1051  */
1052 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1053 {
1054         skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1055         dev_queue_xmit(skb);
1056 }
1057
1058 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1059 {
1060         struct Scsi_Host *shost = vport_to_shost(vport);
1061         struct fc_lport *n_port = shost_priv(shost);
1062         struct fcoe_port *port = lport_priv(n_port);
1063         struct bnx2fc_interface *interface = port->priv;
1064         struct net_device *netdev = interface->netdev;
1065         struct fc_lport *vn_port;
1066         int rc;
1067         char buf[32];
1068
1069         rc = fcoe_validate_vport_create(vport);
1070         if (rc) {
1071                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1072                 printk(KERN_ERR PFX "Failed to create vport, "
1073                        "WWPN (0x%s) already exists\n",
1074                        buf);
1075                 return rc;
1076         }
1077
1078         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1079                 printk(KERN_ERR PFX "vn ports cannot be created on"
1080                         "this interface\n");
1081                 return -EIO;
1082         }
1083         rtnl_lock();
1084         mutex_lock(&bnx2fc_dev_lock);
1085         vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1086         mutex_unlock(&bnx2fc_dev_lock);
1087         rtnl_unlock();
1088
1089         if (IS_ERR(vn_port)) {
1090                 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1091                         netdev->name);
1092                 return -EIO;
1093         }
1094
1095         if (disabled) {
1096                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1097         } else {
1098                 vn_port->boot_time = jiffies;
1099                 fc_lport_init(vn_port);
1100                 fc_fabric_login(vn_port);
1101                 fc_vport_setlink(vn_port);
1102         }
1103         return 0;
1104 }
1105
1106 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1107 {
1108         struct bnx2fc_lport *blport, *tmp;
1109
1110         spin_lock_bh(&hba->hba_lock);
1111         list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1112                 if (blport->lport == lport) {
1113                         list_del(&blport->list);
1114                         kfree(blport);
1115                 }
1116         }
1117         spin_unlock_bh(&hba->hba_lock);
1118 }
1119
1120 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1121 {
1122         struct Scsi_Host *shost = vport_to_shost(vport);
1123         struct fc_lport *n_port = shost_priv(shost);
1124         struct fc_lport *vn_port = vport->dd_data;
1125         struct fcoe_port *port = lport_priv(vn_port);
1126         struct bnx2fc_interface *interface = port->priv;
1127         struct fc_lport *v_port;
1128         bool found = false;
1129
1130         mutex_lock(&n_port->lp_mutex);
1131         list_for_each_entry(v_port, &n_port->vports, list)
1132                 if (v_port->vport == vport) {
1133                         found = true;
1134                         break;
1135                 }
1136
1137         if (!found) {
1138                 mutex_unlock(&n_port->lp_mutex);
1139                 return -ENOENT;
1140         }
1141         list_del(&vn_port->list);
1142         mutex_unlock(&n_port->lp_mutex);
1143         bnx2fc_free_vport(interface->hba, port->lport);
1144         bnx2fc_port_shutdown(port->lport);
1145         bnx2fc_interface_put(interface);
1146         queue_work(bnx2fc_wq, &port->destroy_work);
1147         return 0;
1148 }
1149
1150 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1151 {
1152         struct fc_lport *lport = vport->dd_data;
1153
1154         if (disable) {
1155                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1156                 fc_fabric_logoff(lport);
1157         } else {
1158                 lport->boot_time = jiffies;
1159                 fc_fabric_login(lport);
1160                 fc_vport_setlink(lport);
1161         }
1162         return 0;
1163 }
1164
1165
1166 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1167 {
1168         struct net_device *netdev = interface->netdev;
1169         struct net_device *physdev = interface->hba->phys_dev;
1170         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1171         struct netdev_hw_addr *ha;
1172         int sel_san_mac = 0;
1173
1174         /* setup Source MAC Address */
1175         rcu_read_lock();
1176         for_each_dev_addr(physdev, ha) {
1177                 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1178                                 ha->type);
1179                 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1180                                 ha->addr[1], ha->addr[2], ha->addr[3],
1181                                 ha->addr[4], ha->addr[5]);
1182
1183                 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1184                     (is_valid_ether_addr(ha->addr))) {
1185                         memcpy(ctlr->ctl_src_addr, ha->addr,
1186                                ETH_ALEN);
1187                         sel_san_mac = 1;
1188                         BNX2FC_MISC_DBG("Found SAN MAC\n");
1189                 }
1190         }
1191         rcu_read_unlock();
1192
1193         if (!sel_san_mac)
1194                 return -ENODEV;
1195
1196         interface->fip_packet_type.func = bnx2fc_fip_recv;
1197         interface->fip_packet_type.type = htons(ETH_P_FIP);
1198         interface->fip_packet_type.dev = netdev;
1199         dev_add_pack(&interface->fip_packet_type);
1200
1201         interface->fcoe_packet_type.func = bnx2fc_rcv;
1202         interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1203         interface->fcoe_packet_type.dev = netdev;
1204         dev_add_pack(&interface->fcoe_packet_type);
1205
1206         return 0;
1207 }
1208
1209 static int bnx2fc_attach_transport(void)
1210 {
1211         bnx2fc_transport_template =
1212                 fc_attach_transport(&bnx2fc_transport_function);
1213
1214         if (bnx2fc_transport_template == NULL) {
1215                 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1216                 return -ENODEV;
1217         }
1218
1219         bnx2fc_vport_xport_template =
1220                 fc_attach_transport(&bnx2fc_vport_xport_function);
1221         if (bnx2fc_vport_xport_template == NULL) {
1222                 printk(KERN_ERR PFX
1223                        "Failed to attach FC transport for vport\n");
1224                 fc_release_transport(bnx2fc_transport_template);
1225                 bnx2fc_transport_template = NULL;
1226                 return -ENODEV;
1227         }
1228         return 0;
1229 }
1230 static void bnx2fc_release_transport(void)
1231 {
1232         fc_release_transport(bnx2fc_transport_template);
1233         fc_release_transport(bnx2fc_vport_xport_template);
1234         bnx2fc_transport_template = NULL;
1235         bnx2fc_vport_xport_template = NULL;
1236 }
1237
1238 static void bnx2fc_interface_release(struct kref *kref)
1239 {
1240         struct fcoe_ctlr_device *ctlr_dev;
1241         struct bnx2fc_interface *interface;
1242         struct fcoe_ctlr *ctlr;
1243         struct net_device *netdev;
1244
1245         interface = container_of(kref, struct bnx2fc_interface, kref);
1246         BNX2FC_MISC_DBG("Interface is being released\n");
1247
1248         ctlr = bnx2fc_to_ctlr(interface);
1249         ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1250         netdev = interface->netdev;
1251
1252         /* tear-down FIP controller */
1253         if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1254                 fcoe_ctlr_destroy(ctlr);
1255
1256         fcoe_ctlr_device_delete(ctlr_dev);
1257
1258         dev_put(netdev);
1259         module_put(THIS_MODULE);
1260 }
1261
1262 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1263 {
1264         kref_get(&interface->kref);
1265 }
1266
1267 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1268 {
1269         kref_put(&interface->kref, bnx2fc_interface_release);
1270 }
1271 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1272 {
1273         /* Free the command manager */
1274         if (hba->cmd_mgr) {
1275                 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1276                 hba->cmd_mgr = NULL;
1277         }
1278         kfree(hba->tgt_ofld_list);
1279         bnx2fc_unbind_pcidev(hba);
1280         kfree(hba);
1281 }
1282
1283 /**
1284  * bnx2fc_hba_create - create a new bnx2fc hba
1285  *
1286  * @cnic:       pointer to cnic device
1287  *
1288  * Creates a new FCoE hba on the given device.
1289  *
1290  */
1291 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1292 {
1293         struct bnx2fc_hba *hba;
1294         struct fcoe_capabilities *fcoe_cap;
1295         int rc;
1296
1297         hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1298         if (!hba) {
1299                 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1300                 return NULL;
1301         }
1302         spin_lock_init(&hba->hba_lock);
1303         mutex_init(&hba->hba_mutex);
1304
1305         hba->cnic = cnic;
1306
1307         hba->max_tasks = cnic->max_fcoe_exchanges;
1308         hba->elstm_xids = (hba->max_tasks / 2);
1309         hba->max_outstanding_cmds = hba->elstm_xids;
1310         hba->max_xid = (hba->max_tasks - 1);
1311
1312         rc = bnx2fc_bind_pcidev(hba);
1313         if (rc) {
1314                 printk(KERN_ERR PFX "create_adapter:  bind error\n");
1315                 goto bind_err;
1316         }
1317         hba->phys_dev = cnic->netdev;
1318         hba->next_conn_id = 0;
1319
1320         hba->tgt_ofld_list =
1321                 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1322                         GFP_KERNEL);
1323         if (!hba->tgt_ofld_list) {
1324                 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1325                 goto tgtofld_err;
1326         }
1327
1328         hba->num_ofld_sess = 0;
1329
1330         hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1331         if (!hba->cmd_mgr) {
1332                 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1333                 goto cmgr_err;
1334         }
1335         fcoe_cap = &hba->fcoe_cap;
1336
1337         fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1338                                         FCOE_IOS_PER_CONNECTION_SHIFT;
1339         fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1340                                         FCOE_LOGINS_PER_PORT_SHIFT;
1341         fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1342                                         FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1343         fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1344                                         FCOE_NPIV_WWN_PER_PORT_SHIFT;
1345         fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1346                                         FCOE_TARGETS_SUPPORTED_SHIFT;
1347         fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1348                                         FCOE_OUTSTANDING_COMMANDS_SHIFT;
1349         fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1350
1351         init_waitqueue_head(&hba->shutdown_wait);
1352         init_waitqueue_head(&hba->destroy_wait);
1353         INIT_LIST_HEAD(&hba->vports);
1354
1355         return hba;
1356
1357 cmgr_err:
1358         kfree(hba->tgt_ofld_list);
1359 tgtofld_err:
1360         bnx2fc_unbind_pcidev(hba);
1361 bind_err:
1362         kfree(hba);
1363         return NULL;
1364 }
1365
1366 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1367                                       struct net_device *netdev,
1368                                       enum fip_state fip_mode)
1369 {
1370         struct fcoe_ctlr_device *ctlr_dev;
1371         struct bnx2fc_interface *interface;
1372         struct fcoe_ctlr *ctlr;
1373         int size;
1374         int rc = 0;
1375
1376         size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1377         ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1378                                          size);
1379         if (!ctlr_dev) {
1380                 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1381                 return NULL;
1382         }
1383         ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1384         interface = fcoe_ctlr_priv(ctlr);
1385         dev_hold(netdev);
1386         kref_init(&interface->kref);
1387         interface->hba = hba;
1388         interface->netdev = netdev;
1389
1390         /* Initialize FIP */
1391         fcoe_ctlr_init(ctlr, fip_mode);
1392         ctlr->send = bnx2fc_fip_send;
1393         ctlr->update_mac = bnx2fc_update_src_mac;
1394         ctlr->get_src_addr = bnx2fc_get_src_mac;
1395         set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1396
1397         rc = bnx2fc_interface_setup(interface);
1398         if (!rc)
1399                 return interface;
1400
1401         fcoe_ctlr_destroy(ctlr);
1402         dev_put(netdev);
1403         fcoe_ctlr_device_delete(ctlr_dev);
1404         return NULL;
1405 }
1406
1407 /**
1408  * bnx2fc_if_create - Create FCoE instance on a given interface
1409  *
1410  * @interface:  FCoE interface to create a local port on
1411  * @parent:     Device pointer to be the parent in sysfs for the SCSI host
1412  * @npiv:       Indicates if the port is vport or not
1413  *
1414  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1415  *
1416  * Returns:     Allocated fc_lport or an error pointer
1417  */
1418 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1419                                   struct device *parent, int npiv)
1420 {
1421         struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1422         struct fc_lport         *lport, *n_port;
1423         struct fcoe_port        *port;
1424         struct Scsi_Host        *shost;
1425         struct fc_vport         *vport = dev_to_vport(parent);
1426         struct bnx2fc_lport     *blport;
1427         struct bnx2fc_hba       *hba = interface->hba;
1428         int                     rc = 0;
1429
1430         blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1431         if (!blport) {
1432                 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1433                 return NULL;
1434         }
1435
1436         /* Allocate Scsi_Host structure */
1437         bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1438         if (!npiv)
1439                 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1440         else
1441                 lport = libfc_vport_create(vport, sizeof(*port));
1442
1443         if (!lport) {
1444                 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1445                 goto free_blport;
1446         }
1447         shost = lport->host;
1448         port = lport_priv(lport);
1449         port->lport = lport;
1450         port->priv = interface;
1451         port->get_netdev = bnx2fc_netdev;
1452         INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1453
1454         /* Configure fcoe_port */
1455         rc = bnx2fc_lport_config(lport);
1456         if (rc)
1457                 goto lp_config_err;
1458
1459         if (npiv) {
1460                 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1461                         vport->node_name, vport->port_name);
1462                 fc_set_wwnn(lport, vport->node_name);
1463                 fc_set_wwpn(lport, vport->port_name);
1464         }
1465         /* Configure netdev and networking properties of the lport */
1466         rc = bnx2fc_net_config(lport, interface->netdev);
1467         if (rc) {
1468                 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1469                 goto lp_config_err;
1470         }
1471
1472         rc = bnx2fc_shost_config(lport, parent);
1473         if (rc) {
1474                 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1475                         interface->netdev->name);
1476                 goto lp_config_err;
1477         }
1478
1479         /* Initialize the libfc library */
1480         rc = bnx2fc_libfc_config(lport);
1481         if (rc) {
1482                 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1483                 goto shost_err;
1484         }
1485         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1486
1487         /* Allocate exchange manager */
1488         if (!npiv)
1489                 rc = bnx2fc_em_config(lport, hba);
1490         else {
1491                 shost = vport_to_shost(vport);
1492                 n_port = shost_priv(shost);
1493                 rc = fc_exch_mgr_list_clone(n_port, lport);
1494         }
1495
1496         if (rc) {
1497                 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1498                 goto shost_err;
1499         }
1500
1501         bnx2fc_interface_get(interface);
1502
1503         spin_lock_bh(&hba->hba_lock);
1504         blport->lport = lport;
1505         list_add_tail(&blport->list, &hba->vports);
1506         spin_unlock_bh(&hba->hba_lock);
1507
1508         return lport;
1509
1510 shost_err:
1511         scsi_remove_host(shost);
1512 lp_config_err:
1513         scsi_host_put(lport->host);
1514 free_blport:
1515         kfree(blport);
1516         return NULL;
1517 }
1518
1519 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1520 {
1521         /* Dont listen for Ethernet packets anymore */
1522         __dev_remove_pack(&interface->fcoe_packet_type);
1523         __dev_remove_pack(&interface->fip_packet_type);
1524         synchronize_net();
1525 }
1526
1527 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1528 {
1529         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1530         struct fc_lport *lport = ctlr->lp;
1531         struct fcoe_port *port = lport_priv(lport);
1532         struct bnx2fc_hba *hba = interface->hba;
1533
1534         /* Stop the transmit retry timer */
1535         del_timer_sync(&port->timer);
1536
1537         /* Free existing transmit skbs */
1538         fcoe_clean_pending_queue(lport);
1539
1540         bnx2fc_net_cleanup(interface);
1541
1542         bnx2fc_free_vport(hba, lport);
1543 }
1544
1545 static void bnx2fc_if_destroy(struct fc_lport *lport)
1546 {
1547
1548         /* Free queued packets for the receive thread */
1549         bnx2fc_clean_rx_queue(lport);
1550
1551         /* Detach from scsi-ml */
1552         fc_remove_host(lport->host);
1553         scsi_remove_host(lport->host);
1554
1555         /*
1556          * Note that only the physical lport will have the exchange manager.
1557          * for vports, this function is NOP
1558          */
1559         fc_exch_mgr_free(lport);
1560
1561         /* Free memory used by statistical counters */
1562         fc_lport_free_stats(lport);
1563
1564         /* Release Scsi_Host */
1565         scsi_host_put(lport->host);
1566 }
1567
1568 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1569 {
1570         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1571         struct fc_lport *lport = ctlr->lp;
1572         struct fcoe_port *port = lport_priv(lport);
1573
1574         bnx2fc_interface_cleanup(interface);
1575         bnx2fc_stop(interface);
1576         list_del(&interface->list);
1577         bnx2fc_interface_put(interface);
1578         queue_work(bnx2fc_wq, &port->destroy_work);
1579 }
1580
1581 /**
1582  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1583  *
1584  * @buffer: The name of the Ethernet interface to be destroyed
1585  * @kp:     The associated kernel parameter
1586  *
1587  * Called from sysfs.
1588  *
1589  * Returns: 0 for success
1590  */
1591 static int bnx2fc_destroy(struct net_device *netdev)
1592 {
1593         struct bnx2fc_interface *interface = NULL;
1594         struct workqueue_struct *timer_work_queue;
1595         struct fcoe_ctlr *ctlr;
1596         int rc = 0;
1597
1598         rtnl_lock();
1599         mutex_lock(&bnx2fc_dev_lock);
1600
1601         interface = bnx2fc_interface_lookup(netdev);
1602         ctlr = bnx2fc_to_ctlr(interface);
1603         if (!interface || !ctlr->lp) {
1604                 rc = -ENODEV;
1605                 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1606                 goto netdev_err;
1607         }
1608
1609         timer_work_queue = interface->timer_work_queue;
1610         __bnx2fc_destroy(interface);
1611         destroy_workqueue(timer_work_queue);
1612
1613 netdev_err:
1614         mutex_unlock(&bnx2fc_dev_lock);
1615         rtnl_unlock();
1616         return rc;
1617 }
1618
1619 static void bnx2fc_destroy_work(struct work_struct *work)
1620 {
1621         struct fcoe_port *port;
1622         struct fc_lport *lport;
1623
1624         port = container_of(work, struct fcoe_port, destroy_work);
1625         lport = port->lport;
1626
1627         BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1628
1629         bnx2fc_if_destroy(lport);
1630 }
1631
1632 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1633 {
1634         bnx2fc_free_fw_resc(hba);
1635         bnx2fc_free_task_ctx(hba);
1636 }
1637
1638 /**
1639  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1640  *                      pci structure
1641  *
1642  * @hba:                Adapter instance
1643  */
1644 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1645 {
1646         if (bnx2fc_setup_task_ctx(hba))
1647                 goto mem_err;
1648
1649         if (bnx2fc_setup_fw_resc(hba))
1650                 goto mem_err;
1651
1652         return 0;
1653 mem_err:
1654         bnx2fc_unbind_adapter_devices(hba);
1655         return -ENOMEM;
1656 }
1657
1658 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1659 {
1660         struct cnic_dev *cnic;
1661         struct pci_dev *pdev;
1662
1663         if (!hba->cnic) {
1664                 printk(KERN_ERR PFX "cnic is NULL\n");
1665                 return -ENODEV;
1666         }
1667         cnic = hba->cnic;
1668         pdev = hba->pcidev = cnic->pcidev;
1669         if (!hba->pcidev)
1670                 return -ENODEV;
1671
1672         switch (pdev->device) {
1673         case PCI_DEVICE_ID_NX2_57710:
1674                 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1675                 break;
1676         case PCI_DEVICE_ID_NX2_57711:
1677                 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1678                 break;
1679         case PCI_DEVICE_ID_NX2_57712:
1680         case PCI_DEVICE_ID_NX2_57712_MF:
1681         case PCI_DEVICE_ID_NX2_57712_VF:
1682                 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1683                 break;
1684         case PCI_DEVICE_ID_NX2_57800:
1685         case PCI_DEVICE_ID_NX2_57800_MF:
1686         case PCI_DEVICE_ID_NX2_57800_VF:
1687                 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1688                 break;
1689         case PCI_DEVICE_ID_NX2_57810:
1690         case PCI_DEVICE_ID_NX2_57810_MF:
1691         case PCI_DEVICE_ID_NX2_57810_VF:
1692                 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1693                 break;
1694         case PCI_DEVICE_ID_NX2_57840:
1695         case PCI_DEVICE_ID_NX2_57840_MF:
1696         case PCI_DEVICE_ID_NX2_57840_VF:
1697         case PCI_DEVICE_ID_NX2_57840_2_20:
1698         case PCI_DEVICE_ID_NX2_57840_4_10:
1699                 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1700                 break;
1701         default:
1702                 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1703                 break;
1704         }
1705         pci_dev_get(hba->pcidev);
1706         return 0;
1707 }
1708
1709 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1710 {
1711         if (hba->pcidev) {
1712                 hba->chip_num[0] = '\0';
1713                 pci_dev_put(hba->pcidev);
1714         }
1715         hba->pcidev = NULL;
1716 }
1717
1718 /**
1719  * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1720  *
1721  * @handle:    transport handle pointing to adapter struture
1722  */
1723 static int bnx2fc_ulp_get_stats(void *handle)
1724 {
1725         struct bnx2fc_hba *hba = handle;
1726         struct cnic_dev *cnic;
1727         struct fcoe_stats_info *stats_addr;
1728
1729         if (!hba)
1730                 return -EINVAL;
1731
1732         cnic = hba->cnic;
1733         stats_addr = &cnic->stats_addr->fcoe_stat;
1734         if (!stats_addr)
1735                 return -EINVAL;
1736
1737         strncpy(stats_addr->version, BNX2FC_VERSION,
1738                 sizeof(stats_addr->version));
1739         stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1740         stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1741
1742         return 0;
1743 }
1744
1745
1746 /**
1747  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1748  *
1749  * @handle:     transport handle pointing to adapter structure
1750  *
1751  * This function maps adapter structure to pcidev structure and initiates
1752  *      firmware handshake to enable/initialize on-chip FCoE components.
1753  *      This bnx2fc - cnic interface api callback is used after following
1754  *      conditions are met -
1755  *      a) underlying network interface is up (marked by event NETDEV_UP
1756  *              from netdev
1757  *      b) bnx2fc adatper structure is registered.
1758  */
1759 static void bnx2fc_ulp_start(void *handle)
1760 {
1761         struct bnx2fc_hba *hba = handle;
1762         struct bnx2fc_interface *interface;
1763         struct fcoe_ctlr *ctlr;
1764         struct fc_lport *lport;
1765
1766         mutex_lock(&bnx2fc_dev_lock);
1767
1768         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1769                 bnx2fc_fw_init(hba);
1770
1771         BNX2FC_MISC_DBG("bnx2fc started.\n");
1772
1773         list_for_each_entry(interface, &if_list, list) {
1774                 if (interface->hba == hba) {
1775                         ctlr = bnx2fc_to_ctlr(interface);
1776                         lport = ctlr->lp;
1777                         /* Kick off Fabric discovery*/
1778                         printk(KERN_ERR PFX "ulp_init: start discovery\n");
1779                         lport->tt.frame_send = bnx2fc_xmit;
1780                         bnx2fc_start_disc(interface);
1781                 }
1782         }
1783
1784         mutex_unlock(&bnx2fc_dev_lock);
1785 }
1786
1787 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1788 {
1789         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1790         fc_fabric_logoff(lport);
1791         fc_lport_destroy(lport);
1792 }
1793
1794 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1795 {
1796         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1797         struct fc_lport *lport;
1798         struct fc_lport *vport;
1799
1800         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1801                 return;
1802
1803         lport = ctlr->lp;
1804         bnx2fc_port_shutdown(lport);
1805
1806         mutex_lock(&lport->lp_mutex);
1807         list_for_each_entry(vport, &lport->vports, list)
1808                 fc_host_port_type(vport->host) =
1809                                         FC_PORTTYPE_UNKNOWN;
1810         mutex_unlock(&lport->lp_mutex);
1811         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1812         fcoe_ctlr_link_down(ctlr);
1813         fcoe_clean_pending_queue(lport);
1814 }
1815
1816 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1817 {
1818 #define BNX2FC_INIT_POLL_TIME           (1000 / HZ)
1819         int rc = -1;
1820         int i = HZ;
1821
1822         rc = bnx2fc_bind_adapter_devices(hba);
1823         if (rc) {
1824                 printk(KERN_ALERT PFX
1825                         "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1826                 goto err_out;
1827         }
1828
1829         rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1830         if (rc) {
1831                 printk(KERN_ALERT PFX
1832                         "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1833                 goto err_unbind;
1834         }
1835
1836         /*
1837          * Wait until the adapter init message is complete, and adapter
1838          * state is UP.
1839          */
1840         while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1841                 msleep(BNX2FC_INIT_POLL_TIME);
1842
1843         if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1844                 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1845                                 "Ignoring...\n",
1846                                 hba->cnic->netdev->name);
1847                 rc = -1;
1848                 goto err_unbind;
1849         }
1850
1851
1852         set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1853         return 0;
1854
1855 err_unbind:
1856         bnx2fc_unbind_adapter_devices(hba);
1857 err_out:
1858         return rc;
1859 }
1860
1861 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1862 {
1863         if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1864                 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1865                         init_timer(&hba->destroy_timer);
1866                         hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1867                                                                 jiffies;
1868                         hba->destroy_timer.function = bnx2fc_destroy_timer;
1869                         hba->destroy_timer.data = (unsigned long)hba;
1870                         add_timer(&hba->destroy_timer);
1871                         wait_event_interruptible(hba->destroy_wait,
1872                                         test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1873                                                  &hba->flags));
1874                         clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1875                         /* This should never happen */
1876                         if (signal_pending(current))
1877                                 flush_signals(current);
1878
1879                         del_timer_sync(&hba->destroy_timer);
1880                 }
1881                 bnx2fc_unbind_adapter_devices(hba);
1882         }
1883 }
1884
1885 /**
1886  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1887  *
1888  * @handle:     transport handle pointing to adapter structure
1889  *
1890  * Driver checks if adapter is already in shutdown mode, if not start
1891  *      the shutdown process.
1892  */
1893 static void bnx2fc_ulp_stop(void *handle)
1894 {
1895         struct bnx2fc_hba *hba = handle;
1896         struct bnx2fc_interface *interface;
1897
1898         printk(KERN_ERR "ULP_STOP\n");
1899
1900         mutex_lock(&bnx2fc_dev_lock);
1901         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1902                 goto exit;
1903         list_for_each_entry(interface, &if_list, list) {
1904                 if (interface->hba == hba)
1905                         bnx2fc_stop(interface);
1906         }
1907         BUG_ON(hba->num_ofld_sess != 0);
1908
1909         mutex_lock(&hba->hba_mutex);
1910         clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1911         clear_bit(ADAPTER_STATE_GOING_DOWN,
1912                   &hba->adapter_state);
1913
1914         clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1915         mutex_unlock(&hba->hba_mutex);
1916
1917         bnx2fc_fw_destroy(hba);
1918 exit:
1919         mutex_unlock(&bnx2fc_dev_lock);
1920 }
1921
1922 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1923 {
1924         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1925         struct fc_lport *lport;
1926         int wait_cnt = 0;
1927
1928         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1929         /* Kick off FIP/FLOGI */
1930         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1931                 printk(KERN_ERR PFX "Init not done yet\n");
1932                 return;
1933         }
1934
1935         lport = ctlr->lp;
1936         BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1937
1938         if (!bnx2fc_link_ok(lport) && interface->enabled) {
1939                 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1940                 fcoe_ctlr_link_up(ctlr);
1941                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1942                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1943         }
1944
1945         /* wait for the FCF to be selected before issuing FLOGI */
1946         while (!ctlr->sel_fcf) {
1947                 msleep(250);
1948                 /* give up after 3 secs */
1949                 if (++wait_cnt > 12)
1950                         break;
1951         }
1952
1953         /* Reset max receive frame size to default */
1954         if (fc_set_mfs(lport, BNX2FC_MFS))
1955                 return;
1956
1957         fc_lport_init(lport);
1958         fc_fabric_login(lport);
1959 }
1960
1961
1962 /**
1963  * bnx2fc_ulp_init - Initialize an adapter instance
1964  *
1965  * @dev :       cnic device handle
1966  * Called from cnic_register_driver() context to initialize all
1967  *      enumerated cnic devices. This routine allocates adapter structure
1968  *      and other device specific resources.
1969  */
1970 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1971 {
1972         struct bnx2fc_hba *hba;
1973         int rc = 0;
1974
1975         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1976         /* bnx2fc works only when bnx2x is loaded */
1977         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1978             (dev->max_fcoe_conn == 0)) {
1979                 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1980                                     " flags: %lx fcoe_conn: %d\n",
1981                         dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1982                 return;
1983         }
1984
1985         hba = bnx2fc_hba_create(dev);
1986         if (!hba) {
1987                 printk(KERN_ERR PFX "hba initialization failed\n");
1988                 return;
1989         }
1990
1991         /* Add HBA to the adapter list */
1992         mutex_lock(&bnx2fc_dev_lock);
1993         list_add_tail(&hba->list, &adapter_list);
1994         adapter_count++;
1995         mutex_unlock(&bnx2fc_dev_lock);
1996
1997         dev->fcoe_cap = &hba->fcoe_cap;
1998         clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1999         rc = dev->register_device(dev, CNIC_ULP_FCOE,
2000                                                 (void *) hba);
2001         if (rc)
2002                 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2003         else
2004                 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2005 }
2006
2007 /**
2008  * Deperecated: Use bnx2fc_enabled()
2009  */
2010 static int bnx2fc_disable(struct net_device *netdev)
2011 {
2012         struct bnx2fc_interface *interface;
2013         struct fcoe_ctlr *ctlr;
2014         int rc = 0;
2015
2016         rtnl_lock();
2017         mutex_lock(&bnx2fc_dev_lock);
2018
2019         interface = bnx2fc_interface_lookup(netdev);
2020         ctlr = bnx2fc_to_ctlr(interface);
2021         if (!interface || !ctlr->lp) {
2022                 rc = -ENODEV;
2023                 printk(KERN_ERR PFX "bnx2fc_disable: interface or lport not found\n");
2024         } else {
2025                 interface->enabled = false;
2026                 fcoe_ctlr_link_down(ctlr);
2027                 fcoe_clean_pending_queue(ctlr->lp);
2028         }
2029
2030         mutex_unlock(&bnx2fc_dev_lock);
2031         rtnl_unlock();
2032         return rc;
2033 }
2034
2035 /**
2036  * Deprecated: Use bnx2fc_enabled()
2037  */
2038 static int bnx2fc_enable(struct net_device *netdev)
2039 {
2040         struct bnx2fc_interface *interface;
2041         struct fcoe_ctlr *ctlr;
2042         int rc = 0;
2043
2044         rtnl_lock();
2045         mutex_lock(&bnx2fc_dev_lock);
2046
2047         interface = bnx2fc_interface_lookup(netdev);
2048         ctlr = bnx2fc_to_ctlr(interface);
2049         if (!interface || !ctlr->lp) {
2050                 rc = -ENODEV;
2051                 printk(KERN_ERR PFX "bnx2fc_enable: interface or lport not found\n");
2052         } else if (!bnx2fc_link_ok(ctlr->lp)) {
2053                 fcoe_ctlr_link_up(ctlr);
2054                 interface->enabled = true;
2055         }
2056
2057         mutex_unlock(&bnx2fc_dev_lock);
2058         rtnl_unlock();
2059         return rc;
2060 }
2061
2062 /**
2063  * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2064  * @cdev: The FCoE Controller that is being enabled or disabled
2065  *
2066  * fcoe_sysfs will ensure that the state of 'enabled' has
2067  * changed, so no checking is necessary here. This routine simply
2068  * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2069  * When those routines are removed the functionality can be merged
2070  * here.
2071  */
2072 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2073 {
2074         struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2075         struct fc_lport *lport = ctlr->lp;
2076         struct net_device *netdev = bnx2fc_netdev(lport);
2077
2078         switch (cdev->enabled) {
2079         case FCOE_CTLR_ENABLED:
2080                 return bnx2fc_enable(netdev);
2081         case FCOE_CTLR_DISABLED:
2082                 return bnx2fc_disable(netdev);
2083         case FCOE_CTLR_UNUSED:
2084         default:
2085                 return -ENOTSUPP;
2086         };
2087 }
2088
2089 enum bnx2fc_create_link_state {
2090         BNX2FC_CREATE_LINK_DOWN,
2091         BNX2FC_CREATE_LINK_UP,
2092 };
2093
2094 /**
2095  * _bnx2fc_create() - Create bnx2fc FCoE interface
2096  * @netdev  :   The net_device object the Ethernet interface to create on
2097  * @fip_mode:   The FIP mode for this creation
2098  * @link_state: The ctlr link state on creation
2099  *
2100  * Called from either the libfcoe 'create' module parameter
2101  * via fcoe_create or from fcoe_syfs's ctlr_create file.
2102  *
2103  * libfcoe's 'create' module parameter is deprecated so some
2104  * consolidation of code can be done when that interface is
2105  * removed.
2106  *
2107  * Returns: 0 for success
2108  */
2109 static int _bnx2fc_create(struct net_device *netdev,
2110                           enum fip_state fip_mode,
2111                           enum bnx2fc_create_link_state link_state)
2112 {
2113         struct fcoe_ctlr_device *cdev;
2114         struct fcoe_ctlr *ctlr;
2115         struct bnx2fc_interface *interface;
2116         struct bnx2fc_hba *hba;
2117         struct net_device *phys_dev = netdev;
2118         struct fc_lport *lport;
2119         struct ethtool_drvinfo drvinfo;
2120         int rc = 0;
2121         int vlan_id = 0;
2122
2123         BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2124         if (fip_mode != FIP_MODE_FABRIC) {
2125                 printk(KERN_ERR "fip mode not FABRIC\n");
2126                 return -EIO;
2127         }
2128
2129         rtnl_lock();
2130
2131         mutex_lock(&bnx2fc_dev_lock);
2132
2133         if (!try_module_get(THIS_MODULE)) {
2134                 rc = -EINVAL;
2135                 goto mod_err;
2136         }
2137
2138         /* obtain physical netdev */
2139         if (netdev->priv_flags & IFF_802_1Q_VLAN)
2140                 phys_dev = vlan_dev_real_dev(netdev);
2141
2142         /* verify if the physical device is a netxtreme2 device */
2143         if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2144                 memset(&drvinfo, 0, sizeof(drvinfo));
2145                 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2146                 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2147                         printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2148                         rc = -EINVAL;
2149                         goto netdev_err;
2150                 }
2151         } else {
2152                 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2153                 rc = -EINVAL;
2154                 goto netdev_err;
2155         }
2156
2157         /* obtain interface and initialize rest of the structure */
2158         hba = bnx2fc_hba_lookup(phys_dev);
2159         if (!hba) {
2160                 rc = -ENODEV;
2161                 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2162                 goto netdev_err;
2163         }
2164
2165         if (bnx2fc_interface_lookup(netdev)) {
2166                 rc = -EEXIST;
2167                 goto netdev_err;
2168         }
2169
2170         interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2171         if (!interface) {
2172                 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2173                 goto ifput_err;
2174         }
2175
2176         if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2177                 vlan_id = vlan_dev_vlan_id(netdev);
2178                 interface->vlan_enabled = 1;
2179         }
2180
2181         ctlr = bnx2fc_to_ctlr(interface);
2182         cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2183         interface->vlan_id = vlan_id;
2184
2185         interface->timer_work_queue =
2186                         create_singlethread_workqueue("bnx2fc_timer_wq");
2187         if (!interface->timer_work_queue) {
2188                 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2189                 rc = -EINVAL;
2190                 goto ifput_err;
2191         }
2192
2193         lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2194         if (!lport) {
2195                 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2196                         netdev->name);
2197                 rc = -EINVAL;
2198                 goto if_create_err;
2199         }
2200
2201         /* Add interface to if_list */
2202         list_add_tail(&interface->list, &if_list);
2203
2204         lport->boot_time = jiffies;
2205
2206         /* Make this master N_port */
2207         ctlr->lp = lport;
2208
2209         if (link_state == BNX2FC_CREATE_LINK_UP)
2210                 cdev->enabled = FCOE_CTLR_ENABLED;
2211         else
2212                 cdev->enabled = FCOE_CTLR_DISABLED;
2213
2214         if (link_state == BNX2FC_CREATE_LINK_UP &&
2215             !bnx2fc_link_ok(lport)) {
2216                 fcoe_ctlr_link_up(ctlr);
2217                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2218                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2219         }
2220
2221         BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2222         bnx2fc_start_disc(interface);
2223
2224         if (link_state == BNX2FC_CREATE_LINK_UP)
2225                 interface->enabled = true;
2226
2227         /*
2228          * Release from kref_init in bnx2fc_interface_setup, on success
2229          * lport should be holding a reference taken in bnx2fc_if_create
2230          */
2231         bnx2fc_interface_put(interface);
2232         /* put netdev that was held while calling dev_get_by_name */
2233         mutex_unlock(&bnx2fc_dev_lock);
2234         rtnl_unlock();
2235         return 0;
2236
2237 if_create_err:
2238         destroy_workqueue(interface->timer_work_queue);
2239 ifput_err:
2240         bnx2fc_net_cleanup(interface);
2241         bnx2fc_interface_put(interface);
2242         goto mod_err;
2243 netdev_err:
2244         module_put(THIS_MODULE);
2245 mod_err:
2246         mutex_unlock(&bnx2fc_dev_lock);
2247         rtnl_unlock();
2248         return rc;
2249 }
2250
2251 /**
2252  * bnx2fc_create() - Create a bnx2fc interface
2253  * @netdev  : The net_device object the Ethernet interface to create on
2254  * @fip_mode: The FIP mode for this creation
2255  *
2256  * Called from fcoe transport
2257  *
2258  * Returns: 0 for success
2259  */
2260 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2261 {
2262         return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2263 }
2264
2265 /**
2266  * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2267  * @netdev: The net_device to be used by the allocated FCoE Controller
2268  *
2269  * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2270  * in a link_down state. The allows the user an opportunity to configure
2271  * the FCoE Controller from sysfs before enabling the FCoE Controller.
2272  *
2273  * Creating in with this routine starts the FCoE Controller in Fabric
2274  * mode. The user can change to VN2VN or another mode before enabling.
2275  */
2276 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2277 {
2278         return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2279                               BNX2FC_CREATE_LINK_DOWN);
2280 }
2281
2282 /**
2283  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2284  *
2285  * @cnic:       Pointer to cnic device instance
2286  *
2287  **/
2288 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2289 {
2290         struct bnx2fc_hba *hba;
2291
2292         /* Called with bnx2fc_dev_lock held */
2293         list_for_each_entry(hba, &adapter_list, list) {
2294                 if (hba->cnic == cnic)
2295                         return hba;
2296         }
2297         return NULL;
2298 }
2299
2300 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2301                                                         *netdev)
2302 {
2303         struct bnx2fc_interface *interface;
2304
2305         /* Called with bnx2fc_dev_lock held */
2306         list_for_each_entry(interface, &if_list, list) {
2307                 if (interface->netdev == netdev)
2308                         return interface;
2309         }
2310         return NULL;
2311 }
2312
2313 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2314                                                       *phys_dev)
2315 {
2316         struct bnx2fc_hba *hba;
2317
2318         /* Called with bnx2fc_dev_lock held */
2319         list_for_each_entry(hba, &adapter_list, list) {
2320                 if (hba->phys_dev == phys_dev)
2321                         return hba;
2322         }
2323         printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2324         return NULL;
2325 }
2326
2327 /**
2328  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2329  *
2330  * @dev         cnic device handle
2331  */
2332 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2333 {
2334         struct bnx2fc_hba *hba;
2335         struct bnx2fc_interface *interface, *tmp;
2336
2337         BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2338
2339         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2340                 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2341                         dev->netdev->name, dev->flags);
2342                 return;
2343         }
2344
2345         mutex_lock(&bnx2fc_dev_lock);
2346         hba = bnx2fc_find_hba_for_cnic(dev);
2347         if (!hba) {
2348                 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2349                        dev);
2350                 mutex_unlock(&bnx2fc_dev_lock);
2351                 return;
2352         }
2353
2354         list_del_init(&hba->list);
2355         adapter_count--;
2356
2357         list_for_each_entry_safe(interface, tmp, &if_list, list)
2358                 /* destroy not called yet, move to quiesced list */
2359                 if (interface->hba == hba)
2360                         __bnx2fc_destroy(interface);
2361         mutex_unlock(&bnx2fc_dev_lock);
2362
2363         bnx2fc_ulp_stop(hba);
2364         /* unregister cnic device */
2365         if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2366                 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2367         bnx2fc_hba_destroy(hba);
2368 }
2369
2370 /**
2371  * bnx2fc_fcoe_reset - Resets the fcoe
2372  *
2373  * @shost: shost the reset is from
2374  *
2375  * Returns: always 0
2376  */
2377 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2378 {
2379         struct fc_lport *lport = shost_priv(shost);
2380         fc_lport_reset(lport);
2381         return 0;
2382 }
2383
2384
2385 static bool bnx2fc_match(struct net_device *netdev)
2386 {
2387         struct net_device *phys_dev = netdev;
2388
2389         mutex_lock(&bnx2fc_dev_lock);
2390         if (netdev->priv_flags & IFF_802_1Q_VLAN)
2391                 phys_dev = vlan_dev_real_dev(netdev);
2392
2393         if (bnx2fc_hba_lookup(phys_dev)) {
2394                 mutex_unlock(&bnx2fc_dev_lock);
2395                 return true;
2396         }
2397
2398         mutex_unlock(&bnx2fc_dev_lock);
2399         return false;
2400 }
2401
2402
2403 static struct fcoe_transport bnx2fc_transport = {
2404         .name = {"bnx2fc"},
2405         .attached = false,
2406         .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2407         .alloc = bnx2fc_ctlr_alloc,
2408         .match = bnx2fc_match,
2409         .create = bnx2fc_create,
2410         .destroy = bnx2fc_destroy,
2411         .enable = bnx2fc_enable,
2412         .disable = bnx2fc_disable,
2413 };
2414
2415 /**
2416  * bnx2fc_percpu_thread_create - Create a receive thread for an
2417  *                               online CPU
2418  *
2419  * @cpu: cpu index for the online cpu
2420  */
2421 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2422 {
2423         struct bnx2fc_percpu_s *p;
2424         struct task_struct *thread;
2425
2426         p = &per_cpu(bnx2fc_percpu, cpu);
2427
2428         thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2429                                         (void *)p, cpu_to_node(cpu),
2430                                         "bnx2fc_thread/%d", cpu);
2431         /* bind thread to the cpu */
2432         if (likely(!IS_ERR(thread))) {
2433                 kthread_bind(thread, cpu);
2434                 p->iothread = thread;
2435                 wake_up_process(thread);
2436         }
2437 }
2438
2439 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2440 {
2441         struct bnx2fc_percpu_s *p;
2442         struct task_struct *thread;
2443         struct bnx2fc_work *work, *tmp;
2444
2445         BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2446
2447         /* Prevent any new work from being queued for this CPU */
2448         p = &per_cpu(bnx2fc_percpu, cpu);
2449         spin_lock_bh(&p->fp_work_lock);
2450         thread = p->iothread;
2451         p->iothread = NULL;
2452
2453
2454         /* Free all work in the list */
2455         list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2456                 list_del_init(&work->list);
2457                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2458                 kfree(work);
2459         }
2460
2461         spin_unlock_bh(&p->fp_work_lock);
2462
2463         if (thread)
2464                 kthread_stop(thread);
2465 }
2466
2467 /**
2468  * bnx2fc_cpu_callback - Handler for CPU hotplug events
2469  *
2470  * @nfb:    The callback data block
2471  * @action: The event triggering the callback
2472  * @hcpu:   The index of the CPU that the event is for
2473  *
2474  * This creates or destroys per-CPU data for fcoe
2475  *
2476  * Returns NOTIFY_OK always.
2477  */
2478 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2479                              unsigned long action, void *hcpu)
2480 {
2481         unsigned cpu = (unsigned long)hcpu;
2482
2483         switch (action) {
2484         case CPU_ONLINE:
2485         case CPU_ONLINE_FROZEN:
2486                 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2487                 bnx2fc_percpu_thread_create(cpu);
2488                 break;
2489         case CPU_DEAD:
2490         case CPU_DEAD_FROZEN:
2491                 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2492                 bnx2fc_percpu_thread_destroy(cpu);
2493                 break;
2494         default:
2495                 break;
2496         }
2497         return NOTIFY_OK;
2498 }
2499
2500 /**
2501  * bnx2fc_mod_init - module init entry point
2502  *
2503  * Initialize driver wide global data structures, and register
2504  * with cnic module
2505  **/
2506 static int __init bnx2fc_mod_init(void)
2507 {
2508         struct fcoe_percpu_s *bg;
2509         struct task_struct *l2_thread;
2510         int rc = 0;
2511         unsigned int cpu = 0;
2512         struct bnx2fc_percpu_s *p;
2513
2514         printk(KERN_INFO PFX "%s", version);
2515
2516         /* register as a fcoe transport */
2517         rc = fcoe_transport_attach(&bnx2fc_transport);
2518         if (rc) {
2519                 printk(KERN_ERR "failed to register an fcoe transport, check "
2520                         "if libfcoe is loaded\n");
2521                 goto out;
2522         }
2523
2524         INIT_LIST_HEAD(&adapter_list);
2525         INIT_LIST_HEAD(&if_list);
2526         mutex_init(&bnx2fc_dev_lock);
2527         adapter_count = 0;
2528
2529         /* Attach FC transport template */
2530         rc = bnx2fc_attach_transport();
2531         if (rc)
2532                 goto detach_ft;
2533
2534         bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2535         if (!bnx2fc_wq) {
2536                 rc = -ENOMEM;
2537                 goto release_bt;
2538         }
2539
2540         bg = &bnx2fc_global;
2541         skb_queue_head_init(&bg->fcoe_rx_list);
2542         l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2543                                    (void *)bg,
2544                                    "bnx2fc_l2_thread");
2545         if (IS_ERR(l2_thread)) {
2546                 rc = PTR_ERR(l2_thread);
2547                 goto free_wq;
2548         }
2549         wake_up_process(l2_thread);
2550         spin_lock_bh(&bg->fcoe_rx_list.lock);
2551         bg->thread = l2_thread;
2552         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2553
2554         for_each_possible_cpu(cpu) {
2555                 p = &per_cpu(bnx2fc_percpu, cpu);
2556                 INIT_LIST_HEAD(&p->work_list);
2557                 spin_lock_init(&p->fp_work_lock);
2558         }
2559
2560         for_each_online_cpu(cpu) {
2561                 bnx2fc_percpu_thread_create(cpu);
2562         }
2563
2564         /* Initialize per CPU interrupt thread */
2565         register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2566
2567         cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2568
2569         return 0;
2570
2571 free_wq:
2572         destroy_workqueue(bnx2fc_wq);
2573 release_bt:
2574         bnx2fc_release_transport();
2575 detach_ft:
2576         fcoe_transport_detach(&bnx2fc_transport);
2577 out:
2578         return rc;
2579 }
2580
2581 static void __exit bnx2fc_mod_exit(void)
2582 {
2583         LIST_HEAD(to_be_deleted);
2584         struct bnx2fc_hba *hba, *next;
2585         struct fcoe_percpu_s *bg;
2586         struct task_struct *l2_thread;
2587         struct sk_buff *skb;
2588         unsigned int cpu = 0;
2589
2590         /*
2591          * NOTE: Since cnic calls register_driver routine rtnl_lock,
2592          * it will have higher precedence than bnx2fc_dev_lock.
2593          * unregister_device() cannot be called with bnx2fc_dev_lock
2594          * held.
2595          */
2596         mutex_lock(&bnx2fc_dev_lock);
2597         list_splice(&adapter_list, &to_be_deleted);
2598         INIT_LIST_HEAD(&adapter_list);
2599         adapter_count = 0;
2600         mutex_unlock(&bnx2fc_dev_lock);
2601
2602         /* Unregister with cnic */
2603         list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2604                 list_del_init(&hba->list);
2605                 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2606                        hba);
2607                 bnx2fc_ulp_stop(hba);
2608                 /* unregister cnic device */
2609                 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2610                                        &hba->reg_with_cnic))
2611                         hba->cnic->unregister_device(hba->cnic,
2612                                                          CNIC_ULP_FCOE);
2613                 bnx2fc_hba_destroy(hba);
2614         }
2615         cnic_unregister_driver(CNIC_ULP_FCOE);
2616
2617         /* Destroy global thread */
2618         bg = &bnx2fc_global;
2619         spin_lock_bh(&bg->fcoe_rx_list.lock);
2620         l2_thread = bg->thread;
2621         bg->thread = NULL;
2622         while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2623                 kfree_skb(skb);
2624
2625         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2626
2627         if (l2_thread)
2628                 kthread_stop(l2_thread);
2629
2630         unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2631
2632         /* Destroy per cpu threads */
2633         for_each_online_cpu(cpu) {
2634                 bnx2fc_percpu_thread_destroy(cpu);
2635         }
2636
2637         destroy_workqueue(bnx2fc_wq);
2638         /*
2639          * detach from scsi transport
2640          * must happen after all destroys are done
2641          */
2642         bnx2fc_release_transport();
2643
2644         /* detach from fcoe transport */
2645         fcoe_transport_detach(&bnx2fc_transport);
2646 }
2647
2648 module_init(bnx2fc_mod_init);
2649 module_exit(bnx2fc_mod_exit);
2650
2651 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2652         .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2653         .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2654         .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2655         .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2656         .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2657         .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2658         .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2659
2660         .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2661         .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2662 };
2663
2664 static struct fc_function_template bnx2fc_transport_function = {
2665         .show_host_node_name = 1,
2666         .show_host_port_name = 1,
2667         .show_host_supported_classes = 1,
2668         .show_host_supported_fc4s = 1,
2669         .show_host_active_fc4s = 1,
2670         .show_host_maxframe_size = 1,
2671
2672         .show_host_port_id = 1,
2673         .show_host_supported_speeds = 1,
2674         .get_host_speed = fc_get_host_speed,
2675         .show_host_speed = 1,
2676         .show_host_port_type = 1,
2677         .get_host_port_state = fc_get_host_port_state,
2678         .show_host_port_state = 1,
2679         .show_host_symbolic_name = 1,
2680
2681         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2682                                 sizeof(struct bnx2fc_rport)),
2683         .show_rport_maxframe_size = 1,
2684         .show_rport_supported_classes = 1,
2685
2686         .show_host_fabric_name = 1,
2687         .show_starget_node_name = 1,
2688         .show_starget_port_name = 1,
2689         .show_starget_port_id = 1,
2690         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2691         .show_rport_dev_loss_tmo = 1,
2692         .get_fc_host_stats = bnx2fc_get_host_stats,
2693
2694         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2695
2696         .terminate_rport_io = fc_rport_terminate_io,
2697
2698         .vport_create = bnx2fc_vport_create,
2699         .vport_delete = bnx2fc_vport_destroy,
2700         .vport_disable = bnx2fc_vport_disable,
2701         .bsg_request = fc_lport_bsg_request,
2702 };
2703
2704 static struct fc_function_template bnx2fc_vport_xport_function = {
2705         .show_host_node_name = 1,
2706         .show_host_port_name = 1,
2707         .show_host_supported_classes = 1,
2708         .show_host_supported_fc4s = 1,
2709         .show_host_active_fc4s = 1,
2710         .show_host_maxframe_size = 1,
2711
2712         .show_host_port_id = 1,
2713         .show_host_supported_speeds = 1,
2714         .get_host_speed = fc_get_host_speed,
2715         .show_host_speed = 1,
2716         .show_host_port_type = 1,
2717         .get_host_port_state = fc_get_host_port_state,
2718         .show_host_port_state = 1,
2719         .show_host_symbolic_name = 1,
2720
2721         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2722                                 sizeof(struct bnx2fc_rport)),
2723         .show_rport_maxframe_size = 1,
2724         .show_rport_supported_classes = 1,
2725
2726         .show_host_fabric_name = 1,
2727         .show_starget_node_name = 1,
2728         .show_starget_port_name = 1,
2729         .show_starget_port_id = 1,
2730         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2731         .show_rport_dev_loss_tmo = 1,
2732         .get_fc_host_stats = fc_get_host_stats,
2733         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2734         .terminate_rport_io = fc_rport_terminate_io,
2735         .bsg_request = fc_lport_bsg_request,
2736 };
2737
2738 /**
2739  * scsi_host_template structure used while registering with SCSI-ml
2740  */
2741 static struct scsi_host_template bnx2fc_shost_template = {
2742         .module                 = THIS_MODULE,
2743         .name                   = "Broadcom Offload FCoE Initiator",
2744         .queuecommand           = bnx2fc_queuecommand,
2745         .eh_abort_handler       = bnx2fc_eh_abort,        /* abts */
2746         .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2747         .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2748         .eh_host_reset_handler  = fc_eh_host_reset,
2749         .slave_alloc            = fc_slave_alloc,
2750         .change_queue_depth     = fc_change_queue_depth,
2751         .change_queue_type      = fc_change_queue_type,
2752         .this_id                = -1,
2753         .cmd_per_lun            = 3,
2754         .use_clustering         = ENABLE_CLUSTERING,
2755         .sg_tablesize           = BNX2FC_MAX_BDS_PER_CMD,
2756         .max_sectors            = 1024,
2757 };
2758
2759 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2760         .frame_send             = bnx2fc_xmit,
2761         .elsct_send             = bnx2fc_elsct_send,
2762         .fcp_abort_io           = bnx2fc_abort_io,
2763         .fcp_cleanup            = bnx2fc_cleanup,
2764         .get_lesb               = fcoe_get_lesb,
2765         .rport_event_callback   = bnx2fc_rport_event_handler,
2766 };
2767
2768 /**
2769  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2770  *                      structure carrying callback function pointers
2771  */
2772 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2773         .owner                  = THIS_MODULE,
2774         .cnic_init              = bnx2fc_ulp_init,
2775         .cnic_exit              = bnx2fc_ulp_exit,
2776         .cnic_start             = bnx2fc_ulp_start,
2777         .cnic_stop              = bnx2fc_ulp_stop,
2778         .indicate_kcqes         = bnx2fc_indicate_kcqe,
2779         .indicate_netevent      = bnx2fc_indicate_netevent,
2780         .cnic_get_stats         = bnx2fc_ulp_get_stats,
2781 };