kernel/drivers/scsi/bnx2fc/bnx2fc_fcoe.c

   1 /* bnx2fc_fcoe.c: QLogic 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  * Copyright (c) 2014-2015 QLogic Corporation
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation.
  12  *
  13  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
  14  */
  15
  16 #include "bnx2fc.h"
  17
  18 static struct list_head adapter_list;
  19 static struct list_head if_list;
  20 static u32 adapter_count;
  21 static DEFINE_MUTEX(bnx2fc_dev_lock);
  22 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
  23
  24 #define DRV_MODULE_NAME         "bnx2fc"
  25 #define DRV_MODULE_VERSION      BNX2FC_VERSION
  26 #define DRV_MODULE_RELDATE      "October 15, 2015"
  27
  28
  29 static char version[] =
  30                 "QLogic FCoE Driver " DRV_MODULE_NAME \
  31                 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
  32
  33
  34 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
  35 MODULE_DESCRIPTION("QLogic FCoE Driver");
  36 MODULE_LICENSE("GPL");
  37 MODULE_VERSION(DRV_MODULE_VERSION);
  38
  39 #define BNX2FC_MAX_QUEUE_DEPTH  256
  40 #define BNX2FC_MIN_QUEUE_DEPTH  32
  41 #define FCOE_WORD_TO_BYTE  4
  42
  43 static struct scsi_transport_template   *bnx2fc_transport_template;
  44 static struct scsi_transport_template   *bnx2fc_vport_xport_template;
  45
  46 struct workqueue_struct *bnx2fc_wq;
  47
  48 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
  49  * Here the io threads are per cpu but the l2 thread is just one
  50  */
  51 struct fcoe_percpu_s bnx2fc_global;
  52 DEFINE_SPINLOCK(bnx2fc_global_lock);
  53
  54 static struct cnic_ulp_ops bnx2fc_cnic_cb;
  55 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
  56 static struct scsi_host_template bnx2fc_shost_template;
  57 static struct fc_function_template bnx2fc_transport_function;
  58 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
  59 static struct fc_function_template bnx2fc_vport_xport_function;
  60 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
  61 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
  62 static int bnx2fc_destroy(struct net_device *net_device);
  63 static int bnx2fc_enable(struct net_device *netdev);
  64 static int bnx2fc_disable(struct net_device *netdev);
  65
  66 /* fcoe_syfs control interface handlers */
  67 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
  68 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
  69
  70 static void bnx2fc_recv_frame(struct sk_buff *skb);
  71
  72 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
  73 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
  74 static int bnx2fc_lport_config(struct fc_lport *lport);
  75 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
  76 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
  77 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
  78 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
  79 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
  80 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
  81                                   struct device *parent, int npiv);
  82 static void bnx2fc_destroy_work(struct work_struct *work);
  83
  84 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
  85 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
  86                                                         *phys_dev);
  87 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
  88 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
  89
  90 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
  91 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
  92
  93 static void bnx2fc_port_shutdown(struct fc_lport *lport);
  94 static void bnx2fc_stop(struct bnx2fc_interface *interface);
  95 static int __init bnx2fc_mod_init(void);
  96 static void __exit bnx2fc_mod_exit(void);
  97
  98 unsigned int bnx2fc_debug_level;
  99 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
 100
 101 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
 102                              unsigned long action, void *hcpu);
 103 /* notification function for CPU hotplug events */
 104 static struct notifier_block bnx2fc_cpu_notifier = {
 105         .notifier_call = bnx2fc_cpu_callback,
 106 };
 107
 108 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
 109 {
 110         return ((struct bnx2fc_interface *)
 111                 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
 112 }
 113
 114 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
 115 {
 116         struct fcoe_ctlr_device *ctlr_dev =
 117                 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
 118         struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
 119         struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
 120
 121         fcf_dev->vlan_id = fcoe->vlan_id;
 122 }
 123
 124 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
 125 {
 126         struct fcoe_percpu_s *bg;
 127         struct fcoe_rcv_info *fr;
 128         struct sk_buff_head *list;
 129         struct sk_buff *skb, *next;
 130         struct sk_buff *head;
 131
 132         bg = &bnx2fc_global;
 133         spin_lock_bh(&bg->fcoe_rx_list.lock);
 134         list = &bg->fcoe_rx_list;
 135         head = list->next;
 136         for (skb = head; skb != (struct sk_buff *)list;
 137              skb = next) {
 138                 next = skb->next;
 139                 fr = fcoe_dev_from_skb(skb);
 140                 if (fr->fr_dev == lp) {
 141                         __skb_unlink(skb, list);
 142                         kfree_skb(skb);
 143                 }
 144         }
 145         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 146 }
 147
 148 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 149 {
 150         int rc;
 151         spin_lock(&bnx2fc_global_lock);
 152         rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
 153         spin_unlock(&bnx2fc_global_lock);
 154
 155         return rc;
 156 }
 157
 158 static void bnx2fc_abort_io(struct fc_lport *lport)
 159 {
 160         /*
 161          * This function is no-op for bnx2fc, but we do
 162          * not want to leave it as NULL either, as libfc
 163          * can call the default function which is
 164          * fc_fcp_abort_io.
 165          */
 166 }
 167
 168 static void bnx2fc_cleanup(struct fc_lport *lport)
 169 {
 170         struct fcoe_port *port = lport_priv(lport);
 171         struct bnx2fc_interface *interface = port->priv;
 172         struct bnx2fc_hba *hba = interface->hba;
 173         struct bnx2fc_rport *tgt;
 174         int i;
 175
 176         BNX2FC_MISC_DBG("Entered %s\n", __func__);
 177         mutex_lock(&hba->hba_mutex);
 178         spin_lock_bh(&hba->hba_lock);
 179         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
 180                 tgt = hba->tgt_ofld_list[i];
 181                 if (tgt) {
 182                         /* Cleanup IOs belonging to requested vport */
 183                         if (tgt->port == port) {
 184                                 spin_unlock_bh(&hba->hba_lock);
 185                                 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
 186                                 bnx2fc_flush_active_ios(tgt);
 187                                 spin_lock_bh(&hba->hba_lock);
 188                         }
 189                 }
 190         }
 191         spin_unlock_bh(&hba->hba_lock);
 192         mutex_unlock(&hba->hba_mutex);
 193 }
 194
 195 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
 196                              struct fc_frame *fp)
 197 {
 198         struct fc_rport_priv *rdata = tgt->rdata;
 199         struct fc_frame_header *fh;
 200         int rc = 0;
 201
 202         fh = fc_frame_header_get(fp);
 203         BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
 204                         "r_ctl = 0x%x\n", rdata->ids.port_id,
 205                         ntohs(fh->fh_ox_id), fh->fh_r_ctl);
 206         if ((fh->fh_type == FC_TYPE_ELS) &&
 207             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 208
 209                 switch (fc_frame_payload_op(fp)) {
 210                 case ELS_ADISC:
 211                         rc = bnx2fc_send_adisc(tgt, fp);
 212                         break;
 213                 case ELS_LOGO:
 214                         rc = bnx2fc_send_logo(tgt, fp);
 215                         break;
 216                 case ELS_RLS:
 217                         rc = bnx2fc_send_rls(tgt, fp);
 218                         break;
 219                 default:
 220                         break;
 221                 }
 222         } else if ((fh->fh_type ==  FC_TYPE_BLS) &&
 223             (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
 224                 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
 225         else {
 226                 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
 227                                 "rctl 0x%x thru non-offload path\n",
 228                                 fh->fh_type, fh->fh_r_ctl);
 229                 return -ENODEV;
 230         }
 231         if (rc)
 232                 return -ENOMEM;
 233         else
 234                 return 0;
 235 }
 236
 237 /**
 238  * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
 239  *
 240  * @lport:      the associated local port
 241  * @fp: the fc_frame to be transmitted
 242  */
 243 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
 244 {
 245         struct ethhdr           *eh;
 246         struct fcoe_crc_eof     *cp;
 247         struct sk_buff          *skb;
 248         struct fc_frame_header  *fh;
 249         struct bnx2fc_interface *interface;
 250         struct fcoe_ctlr        *ctlr;
 251         struct bnx2fc_hba *hba;
 252         struct fcoe_port        *port;
 253         struct fcoe_hdr         *hp;
 254         struct bnx2fc_rport     *tgt;
 255         struct fc_stats         *stats;
 256         u8                      sof, eof;
 257         u32                     crc;
 258         unsigned int            hlen, tlen, elen;
 259         int                     wlen, rc = 0;
 260
 261         port = (struct fcoe_port *)lport_priv(lport);
 262         interface = port->priv;
 263         ctlr = bnx2fc_to_ctlr(interface);
 264         hba = interface->hba;
 265
 266         fh = fc_frame_header_get(fp);
 267
 268         skb = fp_skb(fp);
 269         if (!lport->link_up) {
 270                 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
 271                 kfree_skb(skb);
 272                 return 0;
 273         }
 274
 275         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 276                 if (!ctlr->sel_fcf) {
 277                         BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
 278                         kfree_skb(skb);
 279                         return -EINVAL;
 280                 }
 281                 if (fcoe_ctlr_els_send(ctlr, lport, skb))
 282                         return 0;
 283         }
 284
 285         sof = fr_sof(fp);
 286         eof = fr_eof(fp);
 287
 288         /*
 289          * Snoop the frame header to check if the frame is for
 290          * an offloaded session
 291          */
 292         /*
 293          * tgt_ofld_list access is synchronized using
 294          * both hba mutex and hba lock. Atleast hba mutex or
 295          * hba lock needs to be held for read access.
 296          */
 297
 298         spin_lock_bh(&hba->hba_lock);
 299         tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
 300         if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
 301                 /* This frame is for offloaded session */
 302                 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
 303                                 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
 304                 spin_unlock_bh(&hba->hba_lock);
 305                 rc = bnx2fc_xmit_l2_frame(tgt, fp);
 306                 if (rc != -ENODEV) {
 307                         kfree_skb(skb);
 308                         return rc;
 309                 }
 310         } else {
 311                 spin_unlock_bh(&hba->hba_lock);
 312         }
 313
 314         elen = sizeof(struct ethhdr);
 315         hlen = sizeof(struct fcoe_hdr);
 316         tlen = sizeof(struct fcoe_crc_eof);
 317         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 318
 319         skb->ip_summed = CHECKSUM_NONE;
 320         crc = fcoe_fc_crc(fp);
 321
 322         /* copy port crc and eof to the skb buff */
 323         if (skb_is_nonlinear(skb)) {
 324                 skb_frag_t *frag;
 325                 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
 326                         kfree_skb(skb);
 327                         return -ENOMEM;
 328                 }
 329                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
 330                 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
 331         } else {
 332                 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
 333         }
 334
 335         memset(cp, 0, sizeof(*cp));
 336         cp->fcoe_eof = eof;
 337         cp->fcoe_crc32 = cpu_to_le32(~crc);
 338         if (skb_is_nonlinear(skb)) {
 339                 kunmap_atomic(cp);
 340                 cp = NULL;
 341         }
 342
 343         /* adjust skb network/transport offsets to match mac/fcoe/port */
 344         skb_push(skb, elen + hlen);
 345         skb_reset_mac_header(skb);
 346         skb_reset_network_header(skb);
 347         skb->mac_len = elen;
 348         skb->protocol = htons(ETH_P_FCOE);
 349         skb->dev = interface->netdev;
 350
 351         /* fill up mac and fcoe headers */
 352         eh = eth_hdr(skb);
 353         eh->h_proto = htons(ETH_P_FCOE);
 354         if (ctlr->map_dest)
 355                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
 356         else
 357                 /* insert GW address */
 358                 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
 359
 360         if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
 361                 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
 362         else
 363                 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
 364
 365         hp = (struct fcoe_hdr *)(eh + 1);
 366         memset(hp, 0, sizeof(*hp));
 367         if (FC_FCOE_VER)
 368                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
 369         hp->fcoe_sof = sof;
 370
 371         /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
 372         if (lport->seq_offload && fr_max_payload(fp)) {
 373                 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
 374                 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
 375         } else {
 376                 skb_shinfo(skb)->gso_type = 0;
 377                 skb_shinfo(skb)->gso_size = 0;
 378         }
 379
 380         /*update tx stats */
 381         stats = per_cpu_ptr(lport->stats, get_cpu());
 382         stats->TxFrames++;
 383         stats->TxWords += wlen;
 384         put_cpu();
 385
 386         /* send down to lld */
 387         fr_dev(fp) = lport;
 388         if (port->fcoe_pending_queue.qlen)
 389                 fcoe_check_wait_queue(lport, skb);
 390         else if (fcoe_start_io(skb))
 391                 fcoe_check_wait_queue(lport, skb);
 392
 393         return 0;
 394 }
 395
 396 /**
 397  * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
 398  *
 399  * @skb:        the receive socket buffer
 400  * @dev:        associated net device
 401  * @ptype:      context
 402  * @olddev:     last device
 403  *
 404  * This function receives the packet and builds FC frame and passes it up
 405  */
 406 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
 407                 struct packet_type *ptype, struct net_device *olddev)
 408 {
 409         struct fc_lport *lport;
 410         struct bnx2fc_interface *interface;
 411         struct fcoe_ctlr *ctlr;
 412         struct fc_frame_header *fh;
 413         struct fcoe_rcv_info *fr;
 414         struct fcoe_percpu_s *bg;
 415         struct sk_buff *tmp_skb;
 416         unsigned short oxid;
 417
 418         interface = container_of(ptype, struct bnx2fc_interface,
 419                                  fcoe_packet_type);
 420         ctlr = bnx2fc_to_ctlr(interface);
 421         lport = ctlr->lp;
 422
 423         if (unlikely(lport == NULL)) {
 424                 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
 425                 goto err;
 426         }
 427
 428         tmp_skb = skb_share_check(skb, GFP_ATOMIC);
 429         if (!tmp_skb)
 430                 goto err;
 431
 432         skb = tmp_skb;
 433
 434         if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
 435                 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
 436                 goto err;
 437         }
 438
 439         /*
 440          * Check for minimum frame length, and make sure required FCoE
 441          * and FC headers are pulled into the linear data area.
 442          */
 443         if (unlikely((skb->len < FCOE_MIN_FRAME) ||
 444             !pskb_may_pull(skb, FCOE_HEADER_LEN)))
 445                 goto err;
 446
 447         skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
 448         fh = (struct fc_frame_header *) skb_transport_header(skb);
 449
 450         oxid = ntohs(fh->fh_ox_id);
 451
 452         fr = fcoe_dev_from_skb(skb);
 453         fr->fr_dev = lport;
 454
 455         bg = &bnx2fc_global;
 456         spin_lock(&bg->fcoe_rx_list.lock);
 457
 458         __skb_queue_tail(&bg->fcoe_rx_list, skb);
 459         if (bg->fcoe_rx_list.qlen == 1)
 460                 wake_up_process(bg->thread);
 461
 462         spin_unlock(&bg->fcoe_rx_list.lock);
 463
 464         return 0;
 465 err:
 466         kfree_skb(skb);
 467         return -1;
 468 }
 469
 470 static int bnx2fc_l2_rcv_thread(void *arg)
 471 {
 472         struct fcoe_percpu_s *bg = arg;
 473         struct sk_buff *skb;
 474
 475         set_user_nice(current, MIN_NICE);
 476         set_current_state(TASK_INTERRUPTIBLE);
 477         while (!kthread_should_stop()) {
 478                 schedule();
 479                 spin_lock_bh(&bg->fcoe_rx_list.lock);
 480                 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
 481                         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 482                         bnx2fc_recv_frame(skb);
 483                         spin_lock_bh(&bg->fcoe_rx_list.lock);
 484                 }
 485                 __set_current_state(TASK_INTERRUPTIBLE);
 486                 spin_unlock_bh(&bg->fcoe_rx_list.lock);
 487         }
 488         __set_current_state(TASK_RUNNING);
 489         return 0;
 490 }
 491
 492
 493 static void bnx2fc_recv_frame(struct sk_buff *skb)
 494 {
 495         u32 fr_len;
 496         struct fc_lport *lport;
 497         struct fcoe_rcv_info *fr;
 498         struct fc_stats *stats;
 499         struct fc_frame_header *fh;
 500         struct fcoe_crc_eof crc_eof;
 501         struct fc_frame *fp;
 502         struct fc_lport *vn_port;
 503         struct fcoe_port *port;
 504         u8 *mac = NULL;
 505         u8 *dest_mac = NULL;
 506         struct fcoe_hdr *hp;
 507
 508         fr = fcoe_dev_from_skb(skb);
 509         lport = fr->fr_dev;
 510         if (unlikely(lport == NULL)) {
 511                 printk(KERN_ERR PFX "Invalid lport struct\n");
 512                 kfree_skb(skb);
 513                 return;
 514         }
 515
 516         if (skb_is_nonlinear(skb))
 517                 skb_linearize(skb);
 518         mac = eth_hdr(skb)->h_source;
 519         dest_mac = eth_hdr(skb)->h_dest;
 520
 521         /* Pull the header */
 522         hp = (struct fcoe_hdr *) skb_network_header(skb);
 523         fh = (struct fc_frame_header *) skb_transport_header(skb);
 524         skb_pull(skb, sizeof(struct fcoe_hdr));
 525         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
 526
 527         fp = (struct fc_frame *)skb;
 528         fc_frame_init(fp);
 529         fr_dev(fp) = lport;
 530         fr_sof(fp) = hp->fcoe_sof;
 531         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
 532                 kfree_skb(skb);
 533                 return;
 534         }
 535         fr_eof(fp) = crc_eof.fcoe_eof;
 536         fr_crc(fp) = crc_eof.fcoe_crc32;
 537         if (pskb_trim(skb, fr_len)) {
 538                 kfree_skb(skb);
 539                 return;
 540         }
 541
 542         fh = fc_frame_header_get(fp);
 543
 544         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
 545         if (vn_port) {
 546                 port = lport_priv(vn_port);
 547                 if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
 548                         BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
 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                 kfree_skb(skb);
 557                 return;
 558         }
 559         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
 560             fh->fh_type == FC_TYPE_ELS) {
 561                 switch (fc_frame_payload_op(fp)) {
 562                 case ELS_LOGO:
 563                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
 564                                 /* drop non-FIP LOGO */
 565                                 kfree_skb(skb);
 566                                 return;
 567                         }
 568                         break;
 569                 }
 570         }
 571
 572         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
 573                 /* Drop incoming ABTS */
 574                 kfree_skb(skb);
 575                 return;
 576         }
 577
 578         stats = per_cpu_ptr(lport->stats, smp_processor_id());
 579         stats->RxFrames++;
 580         stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
 581
 582         if (le32_to_cpu(fr_crc(fp)) !=
 583                         ~crc32(~0, skb->data, fr_len)) {
 584                 if (stats->InvalidCRCCount < 5)
 585                         printk(KERN_WARNING PFX "dropping frame with "
 586                                "CRC error\n");
 587                 stats->InvalidCRCCount++;
 588                 kfree_skb(skb);
 589                 return;
 590         }
 591         fc_exch_recv(lport, fp);
 592 }
 593
 594 /**
 595  * bnx2fc_percpu_io_thread - thread per cpu for ios
 596  *
 597  * @arg:        ptr to bnx2fc_percpu_info structure
 598  */
 599 int bnx2fc_percpu_io_thread(void *arg)
 600 {
 601         struct bnx2fc_percpu_s *p = arg;
 602         struct bnx2fc_work *work, *tmp;
 603         LIST_HEAD(work_list);
 604
 605         set_user_nice(current, MIN_NICE);
 606         set_current_state(TASK_INTERRUPTIBLE);
 607         while (!kthread_should_stop()) {
 608                 schedule();
 609                 spin_lock_bh(&p->fp_work_lock);
 610                 while (!list_empty(&p->work_list)) {
 611                         list_splice_init(&p->work_list, &work_list);
 612                         spin_unlock_bh(&p->fp_work_lock);
 613
 614                         list_for_each_entry_safe(work, tmp, &work_list, list) {
 615                                 list_del_init(&work->list);
 616                                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
 617                                 kfree(work);
 618                         }
 619
 620                         spin_lock_bh(&p->fp_work_lock);
 621                 }
 622                 __set_current_state(TASK_INTERRUPTIBLE);
 623                 spin_unlock_bh(&p->fp_work_lock);
 624         }
 625         __set_current_state(TASK_RUNNING);
 626
 627         return 0;
 628 }
 629
 630 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
 631 {
 632         struct fc_host_statistics *bnx2fc_stats;
 633         struct fc_lport *lport = shost_priv(shost);
 634         struct fcoe_port *port = lport_priv(lport);
 635         struct bnx2fc_interface *interface = port->priv;
 636         struct bnx2fc_hba *hba = interface->hba;
 637         struct fcoe_statistics_params *fw_stats;
 638         int rc = 0;
 639
 640         fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
 641         if (!fw_stats)
 642                 return NULL;
 643
 644         bnx2fc_stats = fc_get_host_stats(shost);
 645
 646         init_completion(&hba->stat_req_done);
 647         if (bnx2fc_send_stat_req(hba))
 648                 return bnx2fc_stats;
 649         rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
 650         if (!rc) {
 651                 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
 652                 return bnx2fc_stats;
 653         }
 654         BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
 655         bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
 656         BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
 657         bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
 658         BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
 659         bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
 660         BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
 661         bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
 662         BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
 663         bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
 664
 665         bnx2fc_stats->dumped_frames = 0;
 666         bnx2fc_stats->lip_count = 0;
 667         bnx2fc_stats->nos_count = 0;
 668         bnx2fc_stats->loss_of_sync_count = 0;
 669         bnx2fc_stats->loss_of_signal_count = 0;
 670         bnx2fc_stats->prim_seq_protocol_err_count = 0;
 671
 672         memcpy(&hba->prev_stats, hba->stats_buffer,
 673                sizeof(struct fcoe_statistics_params));
 674         return bnx2fc_stats;
 675 }
 676
 677 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
 678 {
 679         struct fcoe_port *port = lport_priv(lport);
 680         struct bnx2fc_interface *interface = port->priv;
 681         struct bnx2fc_hba *hba = interface->hba;
 682         struct Scsi_Host *shost = lport->host;
 683         int rc = 0;
 684
 685         shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
 686         shost->max_lun = BNX2FC_MAX_LUN;
 687         shost->max_id = BNX2FC_MAX_FCP_TGT;
 688         shost->max_channel = 0;
 689         if (lport->vport)
 690                 shost->transportt = bnx2fc_vport_xport_template;
 691         else
 692                 shost->transportt = bnx2fc_transport_template;
 693
 694         /* Add the new host to SCSI-ml */
 695         rc = scsi_add_host(lport->host, dev);
 696         if (rc) {
 697                 printk(KERN_ERR PFX "Error on scsi_add_host\n");
 698                 return rc;
 699         }
 700         if (!lport->vport)
 701                 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
 702         snprintf(fc_host_symbolic_name(lport->host), 256,
 703                  "%s (QLogic %s) v%s over %s",
 704                 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
 705                 interface->netdev->name);
 706
 707         return 0;
 708 }
 709
 710 static int bnx2fc_link_ok(struct fc_lport *lport)
 711 {
 712         struct fcoe_port *port = lport_priv(lport);
 713         struct bnx2fc_interface *interface = port->priv;
 714         struct bnx2fc_hba *hba = interface->hba;
 715         struct net_device *dev = hba->phys_dev;
 716         int rc = 0;
 717
 718         if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
 719                 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 720         else {
 721                 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 722                 rc = -1;
 723         }
 724         return rc;
 725 }
 726
 727 /**
 728  * bnx2fc_get_link_state - get network link state
 729  *
 730  * @hba:        adapter instance pointer
 731  *
 732  * updates adapter structure flag based on netdev state
 733  */
 734 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
 735 {
 736         if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
 737                 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 738         else
 739                 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 740 }
 741
 742 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
 743 {
 744         struct bnx2fc_hba *hba;
 745         struct bnx2fc_interface *interface;
 746         struct fcoe_ctlr *ctlr;
 747         struct fcoe_port *port;
 748         u64 wwnn, wwpn;
 749
 750         port = lport_priv(lport);
 751         interface = port->priv;
 752         ctlr = bnx2fc_to_ctlr(interface);
 753         hba = interface->hba;
 754
 755         /* require support for get_pauseparam ethtool op. */
 756         if (!hba->phys_dev->ethtool_ops ||
 757             !hba->phys_dev->ethtool_ops->get_pauseparam)
 758                 return -EOPNOTSUPP;
 759
 760         if (fc_set_mfs(lport, BNX2FC_MFS))
 761                 return -EINVAL;
 762
 763         skb_queue_head_init(&port->fcoe_pending_queue);
 764         port->fcoe_pending_queue_active = 0;
 765         setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
 766
 767         fcoe_link_speed_update(lport);
 768
 769         if (!lport->vport) {
 770                 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
 771                         wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
 772                                                  1, 0);
 773                 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
 774                 fc_set_wwnn(lport, wwnn);
 775
 776                 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
 777                         wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
 778                                                  2, 0);
 779
 780                 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
 781                 fc_set_wwpn(lport, wwpn);
 782         }
 783
 784         return 0;
 785 }
 786
 787 static void bnx2fc_destroy_timer(unsigned long data)
 788 {
 789         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
 790
 791         printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
 792                "Destroy compl not received!!\n");
 793         set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
 794         wake_up_interruptible(&hba->destroy_wait);
 795 }
 796
 797 /**
 798  * bnx2fc_indicate_netevent - Generic netdev event handler
 799  *
 800  * @context:    adapter structure pointer
 801  * @event:      event type
 802  * @vlan_id:    vlan id - associated vlan id with this event
 803  *
 804  * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
 805  * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
 806  */
 807 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
 808                                      u16 vlan_id)
 809 {
 810         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
 811         struct fcoe_ctlr_device *cdev;
 812         struct fc_lport *lport;
 813         struct fc_lport *vport;
 814         struct bnx2fc_interface *interface, *tmp;
 815         struct fcoe_ctlr *ctlr;
 816         int wait_for_upload = 0;
 817         u32 link_possible = 1;
 818
 819         if (vlan_id != 0 && event != NETDEV_UNREGISTER)
 820                 return;
 821
 822         switch (event) {
 823         case NETDEV_UP:
 824                 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
 825                         printk(KERN_ERR "indicate_netevent: "\
 826                                         "hba is not UP!!\n");
 827                 break;
 828
 829         case NETDEV_DOWN:
 830                 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 831                 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
 832                 link_possible = 0;
 833                 break;
 834
 835         case NETDEV_GOING_DOWN:
 836                 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 837                 link_possible = 0;
 838                 break;
 839
 840         case NETDEV_CHANGE:
 841                 break;
 842
 843         case NETDEV_UNREGISTER:
 844                 if (!vlan_id)
 845                         return;
 846                 mutex_lock(&bnx2fc_dev_lock);
 847                 list_for_each_entry_safe(interface, tmp, &if_list, list) {
 848                         if (interface->hba == hba &&
 849                             interface->vlan_id == (vlan_id & VLAN_VID_MASK))
 850                                 __bnx2fc_destroy(interface);
 851                 }
 852                 mutex_unlock(&bnx2fc_dev_lock);
 853
 854                 /* Ensure ALL destroy work has been completed before return */
 855                 flush_workqueue(bnx2fc_wq);
 856                 return;
 857
 858         default:
 859                 return;
 860         }
 861
 862         mutex_lock(&bnx2fc_dev_lock);
 863         list_for_each_entry(interface, &if_list, list) {
 864
 865                 if (interface->hba != hba)
 866                         continue;
 867
 868                 ctlr = bnx2fc_to_ctlr(interface);
 869                 lport = ctlr->lp;
 870                 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
 871                                 interface->netdev->name, event);
 872
 873                 fcoe_link_speed_update(lport);
 874
 875                 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
 876
 877                 if (link_possible && !bnx2fc_link_ok(lport)) {
 878                         switch (cdev->enabled) {
 879                         case FCOE_CTLR_DISABLED:
 880                                 pr_info("Link up while interface is disabled.\n");
 881                                 break;
 882                         case FCOE_CTLR_ENABLED:
 883                         case FCOE_CTLR_UNUSED:
 884                                 /* Reset max recv frame size to default */
 885                                 fc_set_mfs(lport, BNX2FC_MFS);
 886                                 /*
 887                                  * ctlr link up will only be handled during
 888                                  * enable to avoid sending discovery
 889                                  * solicitation on a stale vlan
 890                                  */
 891                                 if (interface->enabled)
 892                                         fcoe_ctlr_link_up(ctlr);
 893                         };
 894                 } else if (fcoe_ctlr_link_down(ctlr)) {
 895                         switch (cdev->enabled) {
 896                         case FCOE_CTLR_DISABLED:
 897                                 pr_info("Link down while interface is disabled.\n");
 898                                 break;
 899                         case FCOE_CTLR_ENABLED:
 900                         case FCOE_CTLR_UNUSED:
 901                                 mutex_lock(&lport->lp_mutex);
 902                                 list_for_each_entry(vport, &lport->vports, list)
 903                                         fc_host_port_type(vport->host) =
 904                                         FC_PORTTYPE_UNKNOWN;
 905                                 mutex_unlock(&lport->lp_mutex);
 906                                 fc_host_port_type(lport->host) =
 907                                         FC_PORTTYPE_UNKNOWN;
 908                                 per_cpu_ptr(lport->stats,
 909                                             get_cpu())->LinkFailureCount++;
 910                                 put_cpu();
 911                                 fcoe_clean_pending_queue(lport);
 912                                 wait_for_upload = 1;
 913                         };
 914                 }
 915         }
 916         mutex_unlock(&bnx2fc_dev_lock);
 917
 918         if (wait_for_upload) {
 919                 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
 920                 init_waitqueue_head(&hba->shutdown_wait);
 921                 BNX2FC_MISC_DBG("indicate_netevent "
 922                                 "num_ofld_sess = %d\n",
 923                                 hba->num_ofld_sess);
 924                 hba->wait_for_link_down = 1;
 925                 wait_event_interruptible(hba->shutdown_wait,
 926                                          (hba->num_ofld_sess == 0));
 927                 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
 928                                 hba->num_ofld_sess);
 929                 hba->wait_for_link_down = 0;
 930
 931                 if (signal_pending(current))
 932                         flush_signals(current);
 933         }
 934 }
 935
 936 static int bnx2fc_libfc_config(struct fc_lport *lport)
 937 {
 938
 939         /* Set the function pointers set by bnx2fc driver */
 940         memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
 941                 sizeof(struct libfc_function_template));
 942         fc_elsct_init(lport);
 943         fc_exch_init(lport);
 944         fc_rport_init(lport);
 945         fc_disc_init(lport);
 946         fc_disc_config(lport, lport);
 947         return 0;
 948 }
 949
 950 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
 951 {
 952         int fcoe_min_xid, fcoe_max_xid;
 953
 954         fcoe_min_xid = hba->max_xid + 1;
 955         if (nr_cpu_ids <= 2)
 956                 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
 957         else
 958                 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
 959         if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
 960                                fcoe_max_xid, NULL)) {
 961                 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
 962                 return -ENOMEM;
 963         }
 964
 965         return 0;
 966 }
 967
 968 static int bnx2fc_lport_config(struct fc_lport *lport)
 969 {
 970         lport->link_up = 0;
 971         lport->qfull = 0;
 972         lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
 973         lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
 974         lport->e_d_tov = 2 * 1000;
 975         lport->r_a_tov = 10 * 1000;
 976
 977         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
 978                                 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
 979         lport->does_npiv = 1;
 980
 981         memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
 982         lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
 983
 984         /* alloc stats structure */
 985         if (fc_lport_init_stats(lport))
 986                 return -ENOMEM;
 987
 988         /* Finish fc_lport configuration */
 989         fc_lport_config(lport);
 990
 991         return 0;
 992 }
 993
 994 /**
 995  * bnx2fc_fip_recv - handle a received FIP frame.
 996  *
 997  * @skb: the received skb
 998  * @dev: associated &net_device
 999  * @ptype: the &packet_type structure which was used to register this handler.
1000  * @orig_dev: original receive &net_device, in case @ dev is a bond.
1001  *
1002  * Returns: 0 for success
1003  */
1004 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1005                            struct packet_type *ptype,
1006                            struct net_device *orig_dev)
1007 {
1008         struct bnx2fc_interface *interface;
1009         struct fcoe_ctlr *ctlr;
1010         interface = container_of(ptype, struct bnx2fc_interface,
1011                                  fip_packet_type);
1012         ctlr = bnx2fc_to_ctlr(interface);
1013         fcoe_ctlr_recv(ctlr, skb);
1014         return 0;
1015 }
1016
1017 /**
1018  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1019  *
1020  * @fip: FCoE controller.
1021  * @old: Unicast MAC address to delete if the MAC is non-zero.
1022  * @new: Unicast MAC address to add.
1023  *
1024  * Remove any previously-set unicast MAC filter.
1025  * Add secondary FCoE MAC address filter for our OUI.
1026  */
1027 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1028 {
1029         struct fcoe_port *port = lport_priv(lport);
1030
1031         memcpy(port->data_src_addr, addr, ETH_ALEN);
1032 }
1033
1034 /**
1035  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1036  *
1037  * @lport: libfc port
1038  */
1039 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1040 {
1041         struct fcoe_port *port;
1042
1043         port = (struct fcoe_port *)lport_priv(lport);
1044         return port->data_src_addr;
1045 }
1046
1047 /**
1048  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1049  *
1050  * @fip: FCoE controller.
1051  * @skb: FIP Packet.
1052  */
1053 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1054 {
1055         skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1056         dev_queue_xmit(skb);
1057 }
1058
1059 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1060 {
1061         struct Scsi_Host *shost = vport_to_shost(vport);
1062         struct fc_lport *n_port = shost_priv(shost);
1063         struct fcoe_port *port = lport_priv(n_port);
1064         struct bnx2fc_interface *interface = port->priv;
1065         struct net_device *netdev = interface->netdev;
1066         struct fc_lport *vn_port;
1067         int rc;
1068         char buf[32];
1069
1070         rc = fcoe_validate_vport_create(vport);
1071         if (rc) {
1072                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1073                 printk(KERN_ERR PFX "Failed to create vport, "
1074                        "WWPN (0x%s) already exists\n",
1075                        buf);
1076                 return rc;
1077         }
1078
1079         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1080                 printk(KERN_ERR PFX "vn ports cannot be created on"
1081                         "this interface\n");
1082                 return -EIO;
1083         }
1084         rtnl_lock();
1085         mutex_lock(&bnx2fc_dev_lock);
1086         vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1087         mutex_unlock(&bnx2fc_dev_lock);
1088         rtnl_unlock();
1089
1090         if (!vn_port) {
1091                 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1092                         netdev->name);
1093                 return -EIO;
1094         }
1095
1096         if (disabled) {
1097                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1098         } else {
1099                 vn_port->boot_time = jiffies;
1100                 fc_lport_init(vn_port);
1101                 fc_fabric_login(vn_port);
1102                 fc_vport_setlink(vn_port);
1103         }
1104         return 0;
1105 }
1106
1107 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1108 {
1109         struct bnx2fc_lport *blport, *tmp;
1110
1111         spin_lock_bh(&hba->hba_lock);
1112         list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1113                 if (blport->lport == lport) {
1114                         list_del(&blport->list);
1115                         kfree(blport);
1116                 }
1117         }
1118         spin_unlock_bh(&hba->hba_lock);
1119 }
1120
1121 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1122 {
1123         struct Scsi_Host *shost = vport_to_shost(vport);
1124         struct fc_lport *n_port = shost_priv(shost);
1125         struct fc_lport *vn_port = vport->dd_data;
1126         struct fcoe_port *port = lport_priv(vn_port);
1127         struct bnx2fc_interface *interface = port->priv;
1128         struct fc_lport *v_port;
1129         bool found = false;
1130
1131         mutex_lock(&n_port->lp_mutex);
1132         list_for_each_entry(v_port, &n_port->vports, list)
1133                 if (v_port->vport == vport) {
1134                         found = true;
1135                         break;
1136                 }
1137
1138         if (!found) {
1139                 mutex_unlock(&n_port->lp_mutex);
1140                 return -ENOENT;
1141         }
1142         list_del(&vn_port->list);
1143         mutex_unlock(&n_port->lp_mutex);
1144         bnx2fc_free_vport(interface->hba, port->lport);
1145         bnx2fc_port_shutdown(port->lport);
1146         bnx2fc_interface_put(interface);
1147         queue_work(bnx2fc_wq, &port->destroy_work);
1148         return 0;
1149 }
1150
1151 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1152 {
1153         struct fc_lport *lport = vport->dd_data;
1154
1155         if (disable) {
1156                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1157                 fc_fabric_logoff(lport);
1158         } else {
1159                 lport->boot_time = jiffies;
1160                 fc_fabric_login(lport);
1161                 fc_vport_setlink(lport);
1162         }
1163         return 0;
1164 }
1165
1166
1167 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1168 {
1169         struct net_device *netdev = interface->netdev;
1170         struct net_device *physdev = interface->hba->phys_dev;
1171         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1172         struct netdev_hw_addr *ha;
1173         int sel_san_mac = 0;
1174
1175         /* setup Source MAC Address */
1176         rcu_read_lock();
1177         for_each_dev_addr(physdev, ha) {
1178                 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1179                                 ha->type);
1180                 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1181                                 ha->addr[1], ha->addr[2], ha->addr[3],
1182                                 ha->addr[4], ha->addr[5]);
1183
1184                 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1185                     (is_valid_ether_addr(ha->addr))) {
1186                         memcpy(ctlr->ctl_src_addr, ha->addr,
1187                                ETH_ALEN);
1188                         sel_san_mac = 1;
1189                         BNX2FC_MISC_DBG("Found SAN MAC\n");
1190                 }
1191         }
1192         rcu_read_unlock();
1193
1194         if (!sel_san_mac)
1195                 return -ENODEV;
1196
1197         interface->fip_packet_type.func = bnx2fc_fip_recv;
1198         interface->fip_packet_type.type = htons(ETH_P_FIP);
1199         interface->fip_packet_type.dev = netdev;
1200         dev_add_pack(&interface->fip_packet_type);
1201
1202         interface->fcoe_packet_type.func = bnx2fc_rcv;
1203         interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1204         interface->fcoe_packet_type.dev = netdev;
1205         dev_add_pack(&interface->fcoe_packet_type);
1206
1207         return 0;
1208 }
1209
1210 static int bnx2fc_attach_transport(void)
1211 {
1212         bnx2fc_transport_template =
1213                 fc_attach_transport(&bnx2fc_transport_function);
1214
1215         if (bnx2fc_transport_template == NULL) {
1216                 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1217                 return -ENODEV;
1218         }
1219
1220         bnx2fc_vport_xport_template =
1221                 fc_attach_transport(&bnx2fc_vport_xport_function);
1222         if (bnx2fc_vport_xport_template == NULL) {
1223                 printk(KERN_ERR PFX
1224                        "Failed to attach FC transport for vport\n");
1225                 fc_release_transport(bnx2fc_transport_template);
1226                 bnx2fc_transport_template = NULL;
1227                 return -ENODEV;
1228         }
1229         return 0;
1230 }
1231 static void bnx2fc_release_transport(void)
1232 {
1233         fc_release_transport(bnx2fc_transport_template);
1234         fc_release_transport(bnx2fc_vport_xport_template);
1235         bnx2fc_transport_template = NULL;
1236         bnx2fc_vport_xport_template = NULL;
1237 }
1238
1239 static void bnx2fc_interface_release(struct kref *kref)
1240 {
1241         struct fcoe_ctlr_device *ctlr_dev;
1242         struct bnx2fc_interface *interface;
1243         struct fcoe_ctlr *ctlr;
1244         struct net_device *netdev;
1245
1246         interface = container_of(kref, struct bnx2fc_interface, kref);
1247         BNX2FC_MISC_DBG("Interface is being released\n");
1248
1249         ctlr = bnx2fc_to_ctlr(interface);
1250         ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1251         netdev = interface->netdev;
1252
1253         /* tear-down FIP controller */
1254         if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1255                 fcoe_ctlr_destroy(ctlr);
1256
1257         fcoe_ctlr_device_delete(ctlr_dev);
1258
1259         dev_put(netdev);
1260         module_put(THIS_MODULE);
1261 }
1262
1263 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1264 {
1265         kref_get(&interface->kref);
1266 }
1267
1268 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1269 {
1270         kref_put(&interface->kref, bnx2fc_interface_release);
1271 }
1272 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1273 {
1274         /* Free the command manager */
1275         if (hba->cmd_mgr) {
1276                 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1277                 hba->cmd_mgr = NULL;
1278         }
1279         kfree(hba->tgt_ofld_list);
1280         bnx2fc_unbind_pcidev(hba);
1281         kfree(hba);
1282 }
1283
1284 /**
1285  * bnx2fc_hba_create - create a new bnx2fc hba
1286  *
1287  * @cnic:       pointer to cnic device
1288  *
1289  * Creates a new FCoE hba on the given device.
1290  *
1291  */
1292 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1293 {
1294         struct bnx2fc_hba *hba;
1295         struct fcoe_capabilities *fcoe_cap;
1296         int rc;
1297
1298         hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1299         if (!hba) {
1300                 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1301                 return NULL;
1302         }
1303         spin_lock_init(&hba->hba_lock);
1304         mutex_init(&hba->hba_mutex);
1305
1306         hba->cnic = cnic;
1307
1308         hba->max_tasks = cnic->max_fcoe_exchanges;
1309         hba->elstm_xids = (hba->max_tasks / 2);
1310         hba->max_outstanding_cmds = hba->elstm_xids;
1311         hba->max_xid = (hba->max_tasks - 1);
1312
1313         rc = bnx2fc_bind_pcidev(hba);
1314         if (rc) {
1315                 printk(KERN_ERR PFX "create_adapter:  bind error\n");
1316                 goto bind_err;
1317         }
1318         hba->phys_dev = cnic->netdev;
1319         hba->next_conn_id = 0;
1320
1321         hba->tgt_ofld_list =
1322                 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1323                         GFP_KERNEL);
1324         if (!hba->tgt_ofld_list) {
1325                 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1326                 goto tgtofld_err;
1327         }
1328
1329         hba->num_ofld_sess = 0;
1330
1331         hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1332         if (!hba->cmd_mgr) {
1333                 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1334                 goto cmgr_err;
1335         }
1336         fcoe_cap = &hba->fcoe_cap;
1337
1338         fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1339                                         FCOE_IOS_PER_CONNECTION_SHIFT;
1340         fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1341                                         FCOE_LOGINS_PER_PORT_SHIFT;
1342         fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1343                                         FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1344         fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1345                                         FCOE_NPIV_WWN_PER_PORT_SHIFT;
1346         fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1347                                         FCOE_TARGETS_SUPPORTED_SHIFT;
1348         fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1349                                         FCOE_OUTSTANDING_COMMANDS_SHIFT;
1350         fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1351
1352         init_waitqueue_head(&hba->shutdown_wait);
1353         init_waitqueue_head(&hba->destroy_wait);
1354         INIT_LIST_HEAD(&hba->vports);
1355
1356         return hba;
1357
1358 cmgr_err:
1359         kfree(hba->tgt_ofld_list);
1360 tgtofld_err:
1361         bnx2fc_unbind_pcidev(hba);
1362 bind_err:
1363         kfree(hba);
1364         return NULL;
1365 }
1366
1367 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1368                                       struct net_device *netdev,
1369                                       enum fip_state fip_mode)
1370 {
1371         struct fcoe_ctlr_device *ctlr_dev;
1372         struct bnx2fc_interface *interface;
1373         struct fcoe_ctlr *ctlr;
1374         int size;
1375         int rc = 0;
1376
1377         size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1378         ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1379                                          size);
1380         if (!ctlr_dev) {
1381                 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1382                 return NULL;
1383         }
1384         ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1385         ctlr->cdev = ctlr_dev;
1386         interface = fcoe_ctlr_priv(ctlr);
1387         dev_hold(netdev);
1388         kref_init(&interface->kref);
1389         interface->hba = hba;
1390         interface->netdev = netdev;
1391
1392         /* Initialize FIP */
1393         fcoe_ctlr_init(ctlr, fip_mode);
1394         ctlr->send = bnx2fc_fip_send;
1395         ctlr->update_mac = bnx2fc_update_src_mac;
1396         ctlr->get_src_addr = bnx2fc_get_src_mac;
1397         set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1398
1399         rc = bnx2fc_interface_setup(interface);
1400         if (!rc)
1401                 return interface;
1402
1403         fcoe_ctlr_destroy(ctlr);
1404         dev_put(netdev);
1405         fcoe_ctlr_device_delete(ctlr_dev);
1406         return NULL;
1407 }
1408
1409 /**
1410  * bnx2fc_if_create - Create FCoE instance on a given interface
1411  *
1412  * @interface:  FCoE interface to create a local port on
1413  * @parent:     Device pointer to be the parent in sysfs for the SCSI host
1414  * @npiv:       Indicates if the port is vport or not
1415  *
1416  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1417  *
1418  * Returns:     Allocated fc_lport or an error pointer
1419  */
1420 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1421                                   struct device *parent, int npiv)
1422 {
1423         struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1424         struct fc_lport         *lport, *n_port;
1425         struct fcoe_port        *port;
1426         struct Scsi_Host        *shost;
1427         struct fc_vport         *vport = dev_to_vport(parent);
1428         struct bnx2fc_lport     *blport;
1429         struct bnx2fc_hba       *hba = interface->hba;
1430         int                     rc = 0;
1431
1432         blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1433         if (!blport) {
1434                 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1435                 return NULL;
1436         }
1437
1438         /* Allocate Scsi_Host structure */
1439         bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1440         if (!npiv)
1441                 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1442         else
1443                 lport = libfc_vport_create(vport, sizeof(*port));
1444
1445         if (!lport) {
1446                 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1447                 goto free_blport;
1448         }
1449         shost = lport->host;
1450         port = lport_priv(lport);
1451         port->lport = lport;
1452         port->priv = interface;
1453         port->get_netdev = bnx2fc_netdev;
1454         INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1455
1456         /* Configure fcoe_port */
1457         rc = bnx2fc_lport_config(lport);
1458         if (rc)
1459                 goto lp_config_err;
1460
1461         if (npiv) {
1462                 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1463                         vport->node_name, vport->port_name);
1464                 fc_set_wwnn(lport, vport->node_name);
1465                 fc_set_wwpn(lport, vport->port_name);
1466         }
1467         /* Configure netdev and networking properties of the lport */
1468         rc = bnx2fc_net_config(lport, interface->netdev);
1469         if (rc) {
1470                 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1471                 goto lp_config_err;
1472         }
1473
1474         rc = bnx2fc_shost_config(lport, parent);
1475         if (rc) {
1476                 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1477                         interface->netdev->name);
1478                 goto lp_config_err;
1479         }
1480
1481         /* Initialize the libfc library */
1482         rc = bnx2fc_libfc_config(lport);
1483         if (rc) {
1484                 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1485                 goto shost_err;
1486         }
1487         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1488
1489         /* Allocate exchange manager */
1490         if (!npiv)
1491                 rc = bnx2fc_em_config(lport, hba);
1492         else {
1493                 shost = vport_to_shost(vport);
1494                 n_port = shost_priv(shost);
1495                 rc = fc_exch_mgr_list_clone(n_port, lport);
1496         }
1497
1498         if (rc) {
1499                 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1500                 goto shost_err;
1501         }
1502
1503         bnx2fc_interface_get(interface);
1504
1505         spin_lock_bh(&hba->hba_lock);
1506         blport->lport = lport;
1507         list_add_tail(&blport->list, &hba->vports);
1508         spin_unlock_bh(&hba->hba_lock);
1509
1510         return lport;
1511
1512 shost_err:
1513         scsi_remove_host(shost);
1514 lp_config_err:
1515         scsi_host_put(lport->host);
1516 free_blport:
1517         kfree(blport);
1518         return NULL;
1519 }
1520
1521 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1522 {
1523         /* Dont listen for Ethernet packets anymore */
1524         __dev_remove_pack(&interface->fcoe_packet_type);
1525         __dev_remove_pack(&interface->fip_packet_type);
1526         synchronize_net();
1527 }
1528
1529 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1530 {
1531         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1532         struct fc_lport *lport = ctlr->lp;
1533         struct fcoe_port *port = lport_priv(lport);
1534         struct bnx2fc_hba *hba = interface->hba;
1535
1536         /* Stop the transmit retry timer */
1537         del_timer_sync(&port->timer);
1538
1539         /* Free existing transmit skbs */
1540         fcoe_clean_pending_queue(lport);
1541
1542         bnx2fc_net_cleanup(interface);
1543
1544         bnx2fc_free_vport(hba, lport);
1545 }
1546
1547 static void bnx2fc_if_destroy(struct fc_lport *lport)
1548 {
1549
1550         /* Free queued packets for the receive thread */
1551         bnx2fc_clean_rx_queue(lport);
1552
1553         /* Detach from scsi-ml */
1554         fc_remove_host(lport->host);
1555         scsi_remove_host(lport->host);
1556
1557         /*
1558          * Note that only the physical lport will have the exchange manager.
1559          * for vports, this function is NOP
1560          */
1561         fc_exch_mgr_free(lport);
1562
1563         /* Free memory used by statistical counters */
1564         fc_lport_free_stats(lport);
1565
1566         /* Release Scsi_Host */
1567         scsi_host_put(lport->host);
1568 }
1569
1570 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1571 {
1572         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1573         struct fc_lport *lport = ctlr->lp;
1574         struct fcoe_port *port = lport_priv(lport);
1575
1576         bnx2fc_interface_cleanup(interface);
1577         bnx2fc_stop(interface);
1578         list_del(&interface->list);
1579         bnx2fc_interface_put(interface);
1580         queue_work(bnx2fc_wq, &port->destroy_work);
1581 }
1582
1583 /**
1584  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1585  *
1586  * @buffer: The name of the Ethernet interface to be destroyed
1587  * @kp:     The associated kernel parameter
1588  *
1589  * Called from sysfs.
1590  *
1591  * Returns: 0 for success
1592  */
1593 static int bnx2fc_destroy(struct net_device *netdev)
1594 {
1595         struct bnx2fc_interface *interface = NULL;
1596         struct workqueue_struct *timer_work_queue;
1597         struct fcoe_ctlr *ctlr;
1598         int rc = 0;
1599
1600         rtnl_lock();
1601         mutex_lock(&bnx2fc_dev_lock);
1602
1603         interface = bnx2fc_interface_lookup(netdev);
1604         ctlr = bnx2fc_to_ctlr(interface);
1605         if (!interface || !ctlr->lp) {
1606                 rc = -ENODEV;
1607                 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1608                 goto netdev_err;
1609         }
1610
1611         timer_work_queue = interface->timer_work_queue;
1612         __bnx2fc_destroy(interface);
1613         destroy_workqueue(timer_work_queue);
1614
1615 netdev_err:
1616         mutex_unlock(&bnx2fc_dev_lock);
1617         rtnl_unlock();
1618         return rc;
1619 }
1620
1621 static void bnx2fc_destroy_work(struct work_struct *work)
1622 {
1623         struct fcoe_port *port;
1624         struct fc_lport *lport;
1625
1626         port = container_of(work, struct fcoe_port, destroy_work);
1627         lport = port->lport;
1628
1629         BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1630
1631         bnx2fc_if_destroy(lport);
1632 }
1633
1634 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1635 {
1636         bnx2fc_free_fw_resc(hba);
1637         bnx2fc_free_task_ctx(hba);
1638 }
1639
1640 /**
1641  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1642  *                      pci structure
1643  *
1644  * @hba:                Adapter instance
1645  */
1646 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1647 {
1648         if (bnx2fc_setup_task_ctx(hba))
1649                 goto mem_err;
1650
1651         if (bnx2fc_setup_fw_resc(hba))
1652                 goto mem_err;
1653
1654         return 0;
1655 mem_err:
1656         bnx2fc_unbind_adapter_devices(hba);
1657         return -ENOMEM;
1658 }
1659
1660 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1661 {
1662         struct cnic_dev *cnic;
1663         struct pci_dev *pdev;
1664
1665         if (!hba->cnic) {
1666                 printk(KERN_ERR PFX "cnic is NULL\n");
1667                 return -ENODEV;
1668         }
1669         cnic = hba->cnic;
1670         pdev = hba->pcidev = cnic->pcidev;
1671         if (!hba->pcidev)
1672                 return -ENODEV;
1673
1674         switch (pdev->device) {
1675         case PCI_DEVICE_ID_NX2_57710:
1676                 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1677                 break;
1678         case PCI_DEVICE_ID_NX2_57711:
1679                 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1680                 break;
1681         case PCI_DEVICE_ID_NX2_57712:
1682         case PCI_DEVICE_ID_NX2_57712_MF:
1683         case PCI_DEVICE_ID_NX2_57712_VF:
1684                 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1685                 break;
1686         case PCI_DEVICE_ID_NX2_57800:
1687         case PCI_DEVICE_ID_NX2_57800_MF:
1688         case PCI_DEVICE_ID_NX2_57800_VF:
1689                 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1690                 break;
1691         case PCI_DEVICE_ID_NX2_57810:
1692         case PCI_DEVICE_ID_NX2_57810_MF:
1693         case PCI_DEVICE_ID_NX2_57810_VF:
1694                 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1695                 break;
1696         case PCI_DEVICE_ID_NX2_57840:
1697         case PCI_DEVICE_ID_NX2_57840_MF:
1698         case PCI_DEVICE_ID_NX2_57840_VF:
1699         case PCI_DEVICE_ID_NX2_57840_2_20:
1700         case PCI_DEVICE_ID_NX2_57840_4_10:
1701                 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1702                 break;
1703         default:
1704                 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1705                 break;
1706         }
1707         pci_dev_get(hba->pcidev);
1708         return 0;
1709 }
1710
1711 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1712 {
1713         if (hba->pcidev) {
1714                 hba->chip_num[0] = '\0';
1715                 pci_dev_put(hba->pcidev);
1716         }
1717         hba->pcidev = NULL;
1718 }
1719
1720 /**
1721  * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1722  *
1723  * @handle:    transport handle pointing to adapter struture
1724  */
1725 static int bnx2fc_ulp_get_stats(void *handle)
1726 {
1727         struct bnx2fc_hba *hba = handle;
1728         struct cnic_dev *cnic;
1729         struct fcoe_stats_info *stats_addr;
1730
1731         if (!hba)
1732                 return -EINVAL;
1733
1734         cnic = hba->cnic;
1735         stats_addr = &cnic->stats_addr->fcoe_stat;
1736         if (!stats_addr)
1737                 return -EINVAL;
1738
1739         strncpy(stats_addr->version, BNX2FC_VERSION,
1740                 sizeof(stats_addr->version));
1741         stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1742         stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1743
1744         return 0;
1745 }
1746
1747
1748 /**
1749  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1750  *
1751  * @handle:     transport handle pointing to adapter structure
1752  *
1753  * This function maps adapter structure to pcidev structure and initiates
1754  *      firmware handshake to enable/initialize on-chip FCoE components.
1755  *      This bnx2fc - cnic interface api callback is used after following
1756  *      conditions are met -
1757  *      a) underlying network interface is up (marked by event NETDEV_UP
1758  *              from netdev
1759  *      b) bnx2fc adatper structure is registered.
1760  */
1761 static void bnx2fc_ulp_start(void *handle)
1762 {
1763         struct bnx2fc_hba *hba = handle;
1764         struct bnx2fc_interface *interface;
1765         struct fcoe_ctlr *ctlr;
1766         struct fc_lport *lport;
1767
1768         mutex_lock(&bnx2fc_dev_lock);
1769
1770         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1771                 bnx2fc_fw_init(hba);
1772
1773         BNX2FC_MISC_DBG("bnx2fc started.\n");
1774
1775         list_for_each_entry(interface, &if_list, list) {
1776                 if (interface->hba == hba) {
1777                         ctlr = bnx2fc_to_ctlr(interface);
1778                         lport = ctlr->lp;
1779                         /* Kick off Fabric discovery*/
1780                         printk(KERN_ERR PFX "ulp_init: start discovery\n");
1781                         lport->tt.frame_send = bnx2fc_xmit;
1782                         bnx2fc_start_disc(interface);
1783                 }
1784         }
1785
1786         mutex_unlock(&bnx2fc_dev_lock);
1787 }
1788
1789 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1790 {
1791         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1792         fc_fabric_logoff(lport);
1793         fc_lport_destroy(lport);
1794 }
1795
1796 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1797 {
1798         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1799         struct fc_lport *lport;
1800         struct fc_lport *vport;
1801
1802         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1803                 return;
1804
1805         lport = ctlr->lp;
1806         bnx2fc_port_shutdown(lport);
1807
1808         mutex_lock(&lport->lp_mutex);
1809         list_for_each_entry(vport, &lport->vports, list)
1810                 fc_host_port_type(vport->host) =
1811                                         FC_PORTTYPE_UNKNOWN;
1812         mutex_unlock(&lport->lp_mutex);
1813         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1814         fcoe_ctlr_link_down(ctlr);
1815         fcoe_clean_pending_queue(lport);
1816 }
1817
1818 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1819 {
1820 #define BNX2FC_INIT_POLL_TIME           (1000 / HZ)
1821         int rc = -1;
1822         int i = HZ;
1823
1824         rc = bnx2fc_bind_adapter_devices(hba);
1825         if (rc) {
1826                 printk(KERN_ALERT PFX
1827                         "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1828                 goto err_out;
1829         }
1830
1831         rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1832         if (rc) {
1833                 printk(KERN_ALERT PFX
1834                         "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1835                 goto err_unbind;
1836         }
1837
1838         /*
1839          * Wait until the adapter init message is complete, and adapter
1840          * state is UP.
1841          */
1842         while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1843                 msleep(BNX2FC_INIT_POLL_TIME);
1844
1845         if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1846                 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1847                                 "Ignoring...\n",
1848                                 hba->cnic->netdev->name);
1849                 rc = -1;
1850                 goto err_unbind;
1851         }
1852
1853
1854         set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1855         return 0;
1856
1857 err_unbind:
1858         bnx2fc_unbind_adapter_devices(hba);
1859 err_out:
1860         return rc;
1861 }
1862
1863 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1864 {
1865         if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1866                 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1867                         init_timer(&hba->destroy_timer);
1868                         hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1869                                                                 jiffies;
1870                         hba->destroy_timer.function = bnx2fc_destroy_timer;
1871                         hba->destroy_timer.data = (unsigned long)hba;
1872                         add_timer(&hba->destroy_timer);
1873                         wait_event_interruptible(hba->destroy_wait,
1874                                         test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1875                                                  &hba->flags));
1876                         clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1877                         /* This should never happen */
1878                         if (signal_pending(current))
1879                                 flush_signals(current);
1880
1881                         del_timer_sync(&hba->destroy_timer);
1882                 }
1883                 bnx2fc_unbind_adapter_devices(hba);
1884         }
1885 }
1886
1887 /**
1888  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1889  *
1890  * @handle:     transport handle pointing to adapter structure
1891  *
1892  * Driver checks if adapter is already in shutdown mode, if not start
1893  *      the shutdown process.
1894  */
1895 static void bnx2fc_ulp_stop(void *handle)
1896 {
1897         struct bnx2fc_hba *hba = handle;
1898         struct bnx2fc_interface *interface;
1899
1900         printk(KERN_ERR "ULP_STOP\n");
1901
1902         mutex_lock(&bnx2fc_dev_lock);
1903         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1904                 goto exit;
1905         list_for_each_entry(interface, &if_list, list) {
1906                 if (interface->hba == hba)
1907                         bnx2fc_stop(interface);
1908         }
1909         BUG_ON(hba->num_ofld_sess != 0);
1910
1911         mutex_lock(&hba->hba_mutex);
1912         clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1913         clear_bit(ADAPTER_STATE_GOING_DOWN,
1914                   &hba->adapter_state);
1915
1916         clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1917         mutex_unlock(&hba->hba_mutex);
1918
1919         bnx2fc_fw_destroy(hba);
1920 exit:
1921         mutex_unlock(&bnx2fc_dev_lock);
1922 }
1923
1924 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1925 {
1926         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1927         struct fc_lport *lport;
1928         int wait_cnt = 0;
1929
1930         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1931         /* Kick off FIP/FLOGI */
1932         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1933                 printk(KERN_ERR PFX "Init not done yet\n");
1934                 return;
1935         }
1936
1937         lport = ctlr->lp;
1938         BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1939
1940         if (!bnx2fc_link_ok(lport) && interface->enabled) {
1941                 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1942                 fcoe_ctlr_link_up(ctlr);
1943                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1944                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1945         }
1946
1947         /* wait for the FCF to be selected before issuing FLOGI */
1948         while (!ctlr->sel_fcf) {
1949                 msleep(250);
1950                 /* give up after 3 secs */
1951                 if (++wait_cnt > 12)
1952                         break;
1953         }
1954
1955         /* Reset max receive frame size to default */
1956         if (fc_set_mfs(lport, BNX2FC_MFS))
1957                 return;
1958
1959         fc_lport_init(lport);
1960         fc_fabric_login(lport);
1961 }
1962
1963
1964 /**
1965  * bnx2fc_ulp_init - Initialize an adapter instance
1966  *
1967  * @dev :       cnic device handle
1968  * Called from cnic_register_driver() context to initialize all
1969  *      enumerated cnic devices. This routine allocates adapter structure
1970  *      and other device specific resources.
1971  */
1972 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1973 {
1974         struct bnx2fc_hba *hba;
1975         int rc = 0;
1976
1977         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1978         /* bnx2fc works only when bnx2x is loaded */
1979         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1980             (dev->max_fcoe_conn == 0)) {
1981                 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1982                                     " flags: %lx fcoe_conn: %d\n",
1983                         dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1984                 return;
1985         }
1986
1987         hba = bnx2fc_hba_create(dev);
1988         if (!hba) {
1989                 printk(KERN_ERR PFX "hba initialization failed\n");
1990                 return;
1991         }
1992
1993         /* Add HBA to the adapter list */
1994         mutex_lock(&bnx2fc_dev_lock);
1995         list_add_tail(&hba->list, &adapter_list);
1996         adapter_count++;
1997         mutex_unlock(&bnx2fc_dev_lock);
1998
1999         dev->fcoe_cap = &hba->fcoe_cap;
2000         clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2001         rc = dev->register_device(dev, CNIC_ULP_FCOE,
2002                                                 (void *) hba);
2003         if (rc)
2004                 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2005         else
2006                 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2007 }
2008
2009 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2010 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2011 {
2012         struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2013
2014         if (interface->enabled == true) {
2015                 if (!ctlr->lp) {
2016                         pr_err(PFX "__bnx2fc_disable: lport not found\n");
2017                         return -ENODEV;
2018                 } else {
2019                         interface->enabled = false;
2020                         fcoe_ctlr_link_down(ctlr);
2021                         fcoe_clean_pending_queue(ctlr->lp);
2022                 }
2023         }
2024         return 0;
2025 }
2026
2027 /**
2028  * Deperecated: Use bnx2fc_enabled()
2029  */
2030 static int bnx2fc_disable(struct net_device *netdev)
2031 {
2032         struct bnx2fc_interface *interface;
2033         struct fcoe_ctlr *ctlr;
2034         int rc = 0;
2035
2036         rtnl_lock();
2037         mutex_lock(&bnx2fc_dev_lock);
2038
2039         interface = bnx2fc_interface_lookup(netdev);
2040         ctlr = bnx2fc_to_ctlr(interface);
2041
2042         if (!interface) {
2043                 rc = -ENODEV;
2044                 pr_err(PFX "bnx2fc_disable: interface not found\n");
2045         } else {
2046                 rc = __bnx2fc_disable(ctlr);
2047         }
2048         mutex_unlock(&bnx2fc_dev_lock);
2049         rtnl_unlock();
2050         return rc;
2051 }
2052
2053 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2054                                       struct cnic_fc_npiv_tbl *npiv_tbl)
2055 {
2056         struct fc_vport_identifiers vpid;
2057         uint i, created = 0;
2058
2059         if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2060                 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2061                 goto done;
2062         }
2063
2064         /* Sanity check the first entry to make sure it's not 0 */
2065         if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2066             wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2067                 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2068                 goto done;
2069         }
2070
2071         vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2072         vpid.vport_type = FC_PORTTYPE_NPIV;
2073         vpid.disable = false;
2074
2075         for (i = 0; i < npiv_tbl->count; i++) {
2076                 vpid.node_name = wwn_to_u64(npiv_tbl->wwnn[i]);
2077                 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2078                 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2079                     "NPIV[%u]:%016llx-%016llx",
2080                     created, vpid.port_name, vpid.node_name);
2081                 if (fc_vport_create(lport->host, 0, &vpid))
2082                         created++;
2083                 else
2084                         BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2085         }
2086 done:
2087         return created;
2088 }
2089
2090 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2091 {
2092         struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2093         struct bnx2fc_hba *hba;
2094         struct cnic_fc_npiv_tbl *npiv_tbl;
2095         struct fc_lport *lport;
2096
2097         if (interface->enabled == false) {
2098                 if (!ctlr->lp) {
2099                         pr_err(PFX "__bnx2fc_enable: lport not found\n");
2100                         return -ENODEV;
2101                 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2102                         fcoe_ctlr_link_up(ctlr);
2103                         interface->enabled = true;
2104                 }
2105         }
2106
2107         /* Create static NPIV ports if any are contained in NVRAM */
2108         hba = interface->hba;
2109         lport = ctlr->lp;
2110
2111         if (!hba)
2112                 goto done;
2113
2114         if (!hba->cnic)
2115                 goto done;
2116
2117         if (!lport)
2118                 goto done;
2119
2120         if (!lport->host)
2121                 goto done;
2122
2123         if (!hba->cnic->get_fc_npiv_tbl)
2124                 goto done;
2125
2126         npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2127         if (!npiv_tbl)
2128                 goto done;
2129
2130         if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2131                 goto done_free;
2132
2133         bnx2fc_npiv_create_vports(lport, npiv_tbl);
2134 done_free:
2135         kfree(npiv_tbl);
2136 done:
2137         return 0;
2138 }
2139
2140 /**
2141  * Deprecated: Use bnx2fc_enabled()
2142  */
2143 static int bnx2fc_enable(struct net_device *netdev)
2144 {
2145         struct bnx2fc_interface *interface;
2146         struct fcoe_ctlr *ctlr;
2147         int rc = 0;
2148
2149         rtnl_lock();
2150         mutex_lock(&bnx2fc_dev_lock);
2151
2152         interface = bnx2fc_interface_lookup(netdev);
2153         ctlr = bnx2fc_to_ctlr(interface);
2154         if (!interface) {
2155                 rc = -ENODEV;
2156                 pr_err(PFX "bnx2fc_enable: interface not found\n");
2157         } else {
2158                 rc = __bnx2fc_enable(ctlr);
2159         }
2160
2161         mutex_unlock(&bnx2fc_dev_lock);
2162         rtnl_unlock();
2163         return rc;
2164 }
2165
2166 /**
2167  * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2168  * @cdev: The FCoE Controller that is being enabled or disabled
2169  *
2170  * fcoe_sysfs will ensure that the state of 'enabled' has
2171  * changed, so no checking is necessary here. This routine simply
2172  * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2173  * When those routines are removed the functionality can be merged
2174  * here.
2175  */
2176 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2177 {
2178         struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2179
2180         switch (cdev->enabled) {
2181         case FCOE_CTLR_ENABLED:
2182                 return __bnx2fc_enable(ctlr);
2183         case FCOE_CTLR_DISABLED:
2184                 return __bnx2fc_disable(ctlr);
2185         case FCOE_CTLR_UNUSED:
2186         default:
2187                 return -ENOTSUPP;
2188         };
2189 }
2190
2191 enum bnx2fc_create_link_state {
2192         BNX2FC_CREATE_LINK_DOWN,
2193         BNX2FC_CREATE_LINK_UP,
2194 };
2195
2196 /**
2197  * _bnx2fc_create() - Create bnx2fc FCoE interface
2198  * @netdev  :   The net_device object the Ethernet interface to create on
2199  * @fip_mode:   The FIP mode for this creation
2200  * @link_state: The ctlr link state on creation
2201  *
2202  * Called from either the libfcoe 'create' module parameter
2203  * via fcoe_create or from fcoe_syfs's ctlr_create file.
2204  *
2205  * libfcoe's 'create' module parameter is deprecated so some
2206  * consolidation of code can be done when that interface is
2207  * removed.
2208  *
2209  * Returns: 0 for success
2210  */
2211 static int _bnx2fc_create(struct net_device *netdev,
2212                           enum fip_state fip_mode,
2213                           enum bnx2fc_create_link_state link_state)
2214 {
2215         struct fcoe_ctlr_device *cdev;
2216         struct fcoe_ctlr *ctlr;
2217         struct bnx2fc_interface *interface;
2218         struct bnx2fc_hba *hba;
2219         struct net_device *phys_dev = netdev;
2220         struct fc_lport *lport;
2221         struct ethtool_drvinfo drvinfo;
2222         int rc = 0;
2223         int vlan_id = 0;
2224
2225         BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2226         if (fip_mode != FIP_MODE_FABRIC) {
2227                 printk(KERN_ERR "fip mode not FABRIC\n");
2228                 return -EIO;
2229         }
2230
2231         rtnl_lock();
2232
2233         mutex_lock(&bnx2fc_dev_lock);
2234
2235         if (!try_module_get(THIS_MODULE)) {
2236                 rc = -EINVAL;
2237                 goto mod_err;
2238         }
2239
2240         /* obtain physical netdev */
2241         if (netdev->priv_flags & IFF_802_1Q_VLAN)
2242                 phys_dev = vlan_dev_real_dev(netdev);
2243
2244         /* verify if the physical device is a netxtreme2 device */
2245         if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2246                 memset(&drvinfo, 0, sizeof(drvinfo));
2247                 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2248                 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2249                         printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2250                         rc = -EINVAL;
2251                         goto netdev_err;
2252                 }
2253         } else {
2254                 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2255                 rc = -EINVAL;
2256                 goto netdev_err;
2257         }
2258
2259         /* obtain interface and initialize rest of the structure */
2260         hba = bnx2fc_hba_lookup(phys_dev);
2261         if (!hba) {
2262                 rc = -ENODEV;
2263                 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2264                 goto netdev_err;
2265         }
2266
2267         if (bnx2fc_interface_lookup(netdev)) {
2268                 rc = -EEXIST;
2269                 goto netdev_err;
2270         }
2271
2272         interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2273         if (!interface) {
2274                 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2275                 rc = -ENOMEM;
2276                 goto ifput_err;
2277         }
2278
2279         if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2280                 vlan_id = vlan_dev_vlan_id(netdev);
2281                 interface->vlan_enabled = 1;
2282         }
2283
2284         ctlr = bnx2fc_to_ctlr(interface);
2285         cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2286         interface->vlan_id = vlan_id;
2287
2288         interface->timer_work_queue =
2289                         create_singlethread_workqueue("bnx2fc_timer_wq");
2290         if (!interface->timer_work_queue) {
2291                 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2292                 rc = -EINVAL;
2293                 goto ifput_err;
2294         }
2295
2296         lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2297         if (!lport) {
2298                 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2299                         netdev->name);
2300                 rc = -EINVAL;
2301                 goto if_create_err;
2302         }
2303
2304         /* Add interface to if_list */
2305         list_add_tail(&interface->list, &if_list);
2306
2307         lport->boot_time = jiffies;
2308
2309         /* Make this master N_port */
2310         ctlr->lp = lport;
2311
2312         if (link_state == BNX2FC_CREATE_LINK_UP)
2313                 cdev->enabled = FCOE_CTLR_ENABLED;
2314         else
2315                 cdev->enabled = FCOE_CTLR_DISABLED;
2316
2317         if (link_state == BNX2FC_CREATE_LINK_UP &&
2318             !bnx2fc_link_ok(lport)) {
2319                 fcoe_ctlr_link_up(ctlr);
2320                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2321                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2322         }
2323
2324         BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2325         bnx2fc_start_disc(interface);
2326
2327         if (link_state == BNX2FC_CREATE_LINK_UP)
2328                 interface->enabled = true;
2329
2330         /*
2331          * Release from kref_init in bnx2fc_interface_setup, on success
2332          * lport should be holding a reference taken in bnx2fc_if_create
2333          */
2334         bnx2fc_interface_put(interface);
2335         /* put netdev that was held while calling dev_get_by_name */
2336         mutex_unlock(&bnx2fc_dev_lock);
2337         rtnl_unlock();
2338         return 0;
2339
2340 if_create_err:
2341         destroy_workqueue(interface->timer_work_queue);
2342 ifput_err:
2343         bnx2fc_net_cleanup(interface);
2344         bnx2fc_interface_put(interface);
2345         goto mod_err;
2346 netdev_err:
2347         module_put(THIS_MODULE);
2348 mod_err:
2349         mutex_unlock(&bnx2fc_dev_lock);
2350         rtnl_unlock();
2351         return rc;
2352 }
2353
2354 /**
2355  * bnx2fc_create() - Create a bnx2fc interface
2356  * @netdev  : The net_device object the Ethernet interface to create on
2357  * @fip_mode: The FIP mode for this creation
2358  *
2359  * Called from fcoe transport
2360  *
2361  * Returns: 0 for success
2362  */
2363 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2364 {
2365         return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2366 }
2367
2368 /**
2369  * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2370  * @netdev: The net_device to be used by the allocated FCoE Controller
2371  *
2372  * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2373  * in a link_down state. The allows the user an opportunity to configure
2374  * the FCoE Controller from sysfs before enabling the FCoE Controller.
2375  *
2376  * Creating in with this routine starts the FCoE Controller in Fabric
2377  * mode. The user can change to VN2VN or another mode before enabling.
2378  */
2379 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2380 {
2381         return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2382                               BNX2FC_CREATE_LINK_DOWN);
2383 }
2384
2385 /**
2386  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2387  *
2388  * @cnic:       Pointer to cnic device instance
2389  *
2390  **/
2391 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2392 {
2393         struct bnx2fc_hba *hba;
2394
2395         /* Called with bnx2fc_dev_lock held */
2396         list_for_each_entry(hba, &adapter_list, list) {
2397                 if (hba->cnic == cnic)
2398                         return hba;
2399         }
2400         return NULL;
2401 }
2402
2403 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2404                                                         *netdev)
2405 {
2406         struct bnx2fc_interface *interface;
2407
2408         /* Called with bnx2fc_dev_lock held */
2409         list_for_each_entry(interface, &if_list, list) {
2410                 if (interface->netdev == netdev)
2411                         return interface;
2412         }
2413         return NULL;
2414 }
2415
2416 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2417                                                       *phys_dev)
2418 {
2419         struct bnx2fc_hba *hba;
2420
2421         /* Called with bnx2fc_dev_lock held */
2422         list_for_each_entry(hba, &adapter_list, list) {
2423                 if (hba->phys_dev == phys_dev)
2424                         return hba;
2425         }
2426         printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2427         return NULL;
2428 }
2429
2430 /**
2431  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2432  *
2433  * @dev         cnic device handle
2434  */
2435 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2436 {
2437         struct bnx2fc_hba *hba;
2438         struct bnx2fc_interface *interface, *tmp;
2439
2440         BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2441
2442         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2443                 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2444                         dev->netdev->name, dev->flags);
2445                 return;
2446         }
2447
2448         mutex_lock(&bnx2fc_dev_lock);
2449         hba = bnx2fc_find_hba_for_cnic(dev);
2450         if (!hba) {
2451                 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2452                        dev);
2453                 mutex_unlock(&bnx2fc_dev_lock);
2454                 return;
2455         }
2456
2457         list_del_init(&hba->list);
2458         adapter_count--;
2459
2460         list_for_each_entry_safe(interface, tmp, &if_list, list)
2461                 /* destroy not called yet, move to quiesced list */
2462                 if (interface->hba == hba)
2463                         __bnx2fc_destroy(interface);
2464         mutex_unlock(&bnx2fc_dev_lock);
2465
2466         /* Ensure ALL destroy work has been completed before return */
2467         flush_workqueue(bnx2fc_wq);
2468
2469         bnx2fc_ulp_stop(hba);
2470         /* unregister cnic device */
2471         if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2472                 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2473         bnx2fc_hba_destroy(hba);
2474 }
2475
2476 /**
2477  * bnx2fc_fcoe_reset - Resets the fcoe
2478  *
2479  * @shost: shost the reset is from
2480  *
2481  * Returns: always 0
2482  */
2483 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2484 {
2485         struct fc_lport *lport = shost_priv(shost);
2486         fc_lport_reset(lport);
2487         return 0;
2488 }
2489
2490
2491 static bool bnx2fc_match(struct net_device *netdev)
2492 {
2493         struct net_device *phys_dev = netdev;
2494
2495         mutex_lock(&bnx2fc_dev_lock);
2496         if (netdev->priv_flags & IFF_802_1Q_VLAN)
2497                 phys_dev = vlan_dev_real_dev(netdev);
2498
2499         if (bnx2fc_hba_lookup(phys_dev)) {
2500                 mutex_unlock(&bnx2fc_dev_lock);
2501                 return true;
2502         }
2503
2504         mutex_unlock(&bnx2fc_dev_lock);
2505         return false;
2506 }
2507
2508
2509 static struct fcoe_transport bnx2fc_transport = {
2510         .name = {"bnx2fc"},
2511         .attached = false,
2512         .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2513         .alloc = bnx2fc_ctlr_alloc,
2514         .match = bnx2fc_match,
2515         .create = bnx2fc_create,
2516         .destroy = bnx2fc_destroy,
2517         .enable = bnx2fc_enable,
2518         .disable = bnx2fc_disable,
2519 };
2520
2521 /**
2522  * bnx2fc_percpu_thread_create - Create a receive thread for an
2523  *                               online CPU
2524  *
2525  * @cpu: cpu index for the online cpu
2526  */
2527 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2528 {
2529         struct bnx2fc_percpu_s *p;
2530         struct task_struct *thread;
2531
2532         p = &per_cpu(bnx2fc_percpu, cpu);
2533
2534         thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2535                                         (void *)p, cpu_to_node(cpu),
2536                                         "bnx2fc_thread/%d", cpu);
2537         /* bind thread to the cpu */
2538         if (likely(!IS_ERR(thread))) {
2539                 kthread_bind(thread, cpu);
2540                 p->iothread = thread;
2541                 wake_up_process(thread);
2542         }
2543 }
2544
2545 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2546 {
2547         struct bnx2fc_percpu_s *p;
2548         struct task_struct *thread;
2549         struct bnx2fc_work *work, *tmp;
2550
2551         BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2552
2553         /* Prevent any new work from being queued for this CPU */
2554         p = &per_cpu(bnx2fc_percpu, cpu);
2555         spin_lock_bh(&p->fp_work_lock);
2556         thread = p->iothread;
2557         p->iothread = NULL;
2558
2559
2560         /* Free all work in the list */
2561         list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2562                 list_del_init(&work->list);
2563                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2564                 kfree(work);
2565         }
2566
2567         spin_unlock_bh(&p->fp_work_lock);
2568
2569         if (thread)
2570                 kthread_stop(thread);
2571 }
2572
2573 /**
2574  * bnx2fc_cpu_callback - Handler for CPU hotplug events
2575  *
2576  * @nfb:    The callback data block
2577  * @action: The event triggering the callback
2578  * @hcpu:   The index of the CPU that the event is for
2579  *
2580  * This creates or destroys per-CPU data for fcoe
2581  *
2582  * Returns NOTIFY_OK always.
2583  */
2584 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2585                              unsigned long action, void *hcpu)
2586 {
2587         unsigned cpu = (unsigned long)hcpu;
2588
2589         switch (action) {
2590         case CPU_ONLINE:
2591         case CPU_ONLINE_FROZEN:
2592                 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2593                 bnx2fc_percpu_thread_create(cpu);
2594                 break;
2595         case CPU_DEAD:
2596         case CPU_DEAD_FROZEN:
2597                 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2598                 bnx2fc_percpu_thread_destroy(cpu);
2599                 break;
2600         default:
2601                 break;
2602         }
2603         return NOTIFY_OK;
2604 }
2605
2606 /**
2607  * bnx2fc_mod_init - module init entry point
2608  *
2609  * Initialize driver wide global data structures, and register
2610  * with cnic module
2611  **/
2612 static int __init bnx2fc_mod_init(void)
2613 {
2614         struct fcoe_percpu_s *bg;
2615         struct task_struct *l2_thread;
2616         int rc = 0;
2617         unsigned int cpu = 0;
2618         struct bnx2fc_percpu_s *p;
2619
2620         printk(KERN_INFO PFX "%s", version);
2621
2622         /* register as a fcoe transport */
2623         rc = fcoe_transport_attach(&bnx2fc_transport);
2624         if (rc) {
2625                 printk(KERN_ERR "failed to register an fcoe transport, check "
2626                         "if libfcoe is loaded\n");
2627                 goto out;
2628         }
2629
2630         INIT_LIST_HEAD(&adapter_list);
2631         INIT_LIST_HEAD(&if_list);
2632         mutex_init(&bnx2fc_dev_lock);
2633         adapter_count = 0;
2634
2635         /* Attach FC transport template */
2636         rc = bnx2fc_attach_transport();
2637         if (rc)
2638                 goto detach_ft;
2639
2640         bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2641         if (!bnx2fc_wq) {
2642                 rc = -ENOMEM;
2643                 goto release_bt;
2644         }
2645
2646         bg = &bnx2fc_global;
2647         skb_queue_head_init(&bg->fcoe_rx_list);
2648         l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2649                                    (void *)bg,
2650                                    "bnx2fc_l2_thread");
2651         if (IS_ERR(l2_thread)) {
2652                 rc = PTR_ERR(l2_thread);
2653                 goto free_wq;
2654         }
2655         wake_up_process(l2_thread);
2656         spin_lock_bh(&bg->fcoe_rx_list.lock);
2657         bg->thread = l2_thread;
2658         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2659
2660         for_each_possible_cpu(cpu) {
2661                 p = &per_cpu(bnx2fc_percpu, cpu);
2662                 INIT_LIST_HEAD(&p->work_list);
2663                 spin_lock_init(&p->fp_work_lock);
2664         }
2665
2666         cpu_notifier_register_begin();
2667
2668         for_each_online_cpu(cpu) {
2669                 bnx2fc_percpu_thread_create(cpu);
2670         }
2671
2672         /* Initialize per CPU interrupt thread */
2673         __register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2674
2675         cpu_notifier_register_done();
2676
2677         cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2678
2679         return 0;
2680
2681 free_wq:
2682         destroy_workqueue(bnx2fc_wq);
2683 release_bt:
2684         bnx2fc_release_transport();
2685 detach_ft:
2686         fcoe_transport_detach(&bnx2fc_transport);
2687 out:
2688         return rc;
2689 }
2690
2691 static void __exit bnx2fc_mod_exit(void)
2692 {
2693         LIST_HEAD(to_be_deleted);
2694         struct bnx2fc_hba *hba, *next;
2695         struct fcoe_percpu_s *bg;
2696         struct task_struct *l2_thread;
2697         struct sk_buff *skb;
2698         unsigned int cpu = 0;
2699
2700         /*
2701          * NOTE: Since cnic calls register_driver routine rtnl_lock,
2702          * it will have higher precedence than bnx2fc_dev_lock.
2703          * unregister_device() cannot be called with bnx2fc_dev_lock
2704          * held.
2705          */
2706         mutex_lock(&bnx2fc_dev_lock);
2707         list_splice(&adapter_list, &to_be_deleted);
2708         INIT_LIST_HEAD(&adapter_list);
2709         adapter_count = 0;
2710         mutex_unlock(&bnx2fc_dev_lock);
2711
2712         /* Unregister with cnic */
2713         list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2714                 list_del_init(&hba->list);
2715                 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2716                        hba);
2717                 bnx2fc_ulp_stop(hba);
2718                 /* unregister cnic device */
2719                 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2720                                        &hba->reg_with_cnic))
2721                         hba->cnic->unregister_device(hba->cnic,
2722                                                          CNIC_ULP_FCOE);
2723                 bnx2fc_hba_destroy(hba);
2724         }
2725         cnic_unregister_driver(CNIC_ULP_FCOE);
2726
2727         /* Destroy global thread */
2728         bg = &bnx2fc_global;
2729         spin_lock_bh(&bg->fcoe_rx_list.lock);
2730         l2_thread = bg->thread;
2731         bg->thread = NULL;
2732         while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2733                 kfree_skb(skb);
2734
2735         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2736
2737         if (l2_thread)
2738                 kthread_stop(l2_thread);
2739
2740         cpu_notifier_register_begin();
2741
2742         /* Destroy per cpu threads */
2743         for_each_online_cpu(cpu) {
2744                 bnx2fc_percpu_thread_destroy(cpu);
2745         }
2746
2747         __unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2748
2749         cpu_notifier_register_done();
2750
2751         destroy_workqueue(bnx2fc_wq);
2752         /*
2753          * detach from scsi transport
2754          * must happen after all destroys are done
2755          */
2756         bnx2fc_release_transport();
2757
2758         /* detach from fcoe transport */
2759         fcoe_transport_detach(&bnx2fc_transport);
2760 }
2761
2762 module_init(bnx2fc_mod_init);
2763 module_exit(bnx2fc_mod_exit);
2764
2765 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2766         .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2767         .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2768         .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2769         .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2770         .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2771         .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2772         .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2773
2774         .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2775         .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2776 };
2777
2778 static struct fc_function_template bnx2fc_transport_function = {
2779         .show_host_node_name = 1,
2780         .show_host_port_name = 1,
2781         .show_host_supported_classes = 1,
2782         .show_host_supported_fc4s = 1,
2783         .show_host_active_fc4s = 1,
2784         .show_host_maxframe_size = 1,
2785
2786         .show_host_port_id = 1,
2787         .show_host_supported_speeds = 1,
2788         .get_host_speed = fc_get_host_speed,
2789         .show_host_speed = 1,
2790         .show_host_port_type = 1,
2791         .get_host_port_state = fc_get_host_port_state,
2792         .show_host_port_state = 1,
2793         .show_host_symbolic_name = 1,
2794
2795         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2796                                 sizeof(struct bnx2fc_rport)),
2797         .show_rport_maxframe_size = 1,
2798         .show_rport_supported_classes = 1,
2799
2800         .show_host_fabric_name = 1,
2801         .show_starget_node_name = 1,
2802         .show_starget_port_name = 1,
2803         .show_starget_port_id = 1,
2804         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2805         .show_rport_dev_loss_tmo = 1,
2806         .get_fc_host_stats = bnx2fc_get_host_stats,
2807
2808         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2809
2810         .terminate_rport_io = fc_rport_terminate_io,
2811
2812         .vport_create = bnx2fc_vport_create,
2813         .vport_delete = bnx2fc_vport_destroy,
2814         .vport_disable = bnx2fc_vport_disable,
2815         .bsg_request = fc_lport_bsg_request,
2816 };
2817
2818 static struct fc_function_template bnx2fc_vport_xport_function = {
2819         .show_host_node_name = 1,
2820         .show_host_port_name = 1,
2821         .show_host_supported_classes = 1,
2822         .show_host_supported_fc4s = 1,
2823         .show_host_active_fc4s = 1,
2824         .show_host_maxframe_size = 1,
2825
2826         .show_host_port_id = 1,
2827         .show_host_supported_speeds = 1,
2828         .get_host_speed = fc_get_host_speed,
2829         .show_host_speed = 1,
2830         .show_host_port_type = 1,
2831         .get_host_port_state = fc_get_host_port_state,
2832         .show_host_port_state = 1,
2833         .show_host_symbolic_name = 1,
2834
2835         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2836                                 sizeof(struct bnx2fc_rport)),
2837         .show_rport_maxframe_size = 1,
2838         .show_rport_supported_classes = 1,
2839
2840         .show_host_fabric_name = 1,
2841         .show_starget_node_name = 1,
2842         .show_starget_port_name = 1,
2843         .show_starget_port_id = 1,
2844         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2845         .show_rport_dev_loss_tmo = 1,
2846         .get_fc_host_stats = fc_get_host_stats,
2847         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2848         .terminate_rport_io = fc_rport_terminate_io,
2849         .bsg_request = fc_lport_bsg_request,
2850 };
2851
2852 /**
2853  * scsi_host_template structure used while registering with SCSI-ml
2854  */
2855 static struct scsi_host_template bnx2fc_shost_template = {
2856         .module                 = THIS_MODULE,
2857         .name                   = "QLogic Offload FCoE Initiator",
2858         .queuecommand           = bnx2fc_queuecommand,
2859         .eh_abort_handler       = bnx2fc_eh_abort,        /* abts */
2860         .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2861         .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2862         .eh_host_reset_handler  = fc_eh_host_reset,
2863         .slave_alloc            = fc_slave_alloc,
2864         .change_queue_depth     = scsi_change_queue_depth,
2865         .this_id                = -1,
2866         .cmd_per_lun            = 3,
2867         .use_clustering         = ENABLE_CLUSTERING,
2868         .sg_tablesize           = BNX2FC_MAX_BDS_PER_CMD,
2869         .max_sectors            = 1024,
2870         .track_queue_depth      = 1,
2871 };
2872
2873 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2874         .frame_send             = bnx2fc_xmit,
2875         .elsct_send             = bnx2fc_elsct_send,
2876         .fcp_abort_io           = bnx2fc_abort_io,
2877         .fcp_cleanup            = bnx2fc_cleanup,
2878         .get_lesb               = fcoe_get_lesb,
2879         .rport_event_callback   = bnx2fc_rport_event_handler,
2880 };
2881
2882 /**
2883  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2884  *                      structure carrying callback function pointers
2885  */
2886 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2887         .owner                  = THIS_MODULE,
2888         .cnic_init              = bnx2fc_ulp_init,
2889         .cnic_exit              = bnx2fc_ulp_exit,
2890         .cnic_start             = bnx2fc_ulp_start,
2891         .cnic_stop              = bnx2fc_ulp_stop,
2892         .indicate_kcqes         = bnx2fc_indicate_kcqe,
2893         .indicate_netevent      = bnx2fc_indicate_netevent,
2894         .cnic_get_stats         = bnx2fc_ulp_get_stats,
2895 };