kernel/drivers/scsi/bnx2fc/bnx2fc_fcoe.c

   1 /* bnx2fc_fcoe.c: QLogic NetXtreme II Linux FCoE offload driver.
   2  * This file contains the code that interacts with libfc, libfcoe,
   3  * cnic modules to create FCoE instances, send/receive non-offloaded
   4  * FIP/FCoE packets, listen to link events etc.
   5  *
   6  * Copyright (c) 2008 - 2013 Broadcom Corporation
   7  * Copyright (c) 2014, 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      "Dec 11, 2013"
  27
  28
  29 static char version[] =
  30                 "QLogic NetXtreme II 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 NetXtreme II BCM57710 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                 printk(KERN_ERR PFX "Unknown netevent %ld", event);
 860                 return;
 861         }
 862
 863         mutex_lock(&bnx2fc_dev_lock);
 864         list_for_each_entry(interface, &if_list, list) {
 865
 866                 if (interface->hba != hba)
 867                         continue;
 868
 869                 ctlr = bnx2fc_to_ctlr(interface);
 870                 lport = ctlr->lp;
 871                 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
 872                                 interface->netdev->name, event);
 873
 874                 fcoe_link_speed_update(lport);
 875
 876                 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
 877
 878                 if (link_possible && !bnx2fc_link_ok(lport)) {
 879                         switch (cdev->enabled) {
 880                         case FCOE_CTLR_DISABLED:
 881                                 pr_info("Link up while interface is disabled.\n");
 882                                 break;
 883                         case FCOE_CTLR_ENABLED:
 884                         case FCOE_CTLR_UNUSED:
 885                                 /* Reset max recv frame size to default */
 886                                 fc_set_mfs(lport, BNX2FC_MFS);
 887                                 /*
 888                                  * ctlr link up will only be handled during
 889                                  * enable to avoid sending discovery
 890                                  * solicitation on a stale vlan
 891                                  */
 892                                 if (interface->enabled)
 893                                         fcoe_ctlr_link_up(ctlr);
 894                         };
 895                 } else if (fcoe_ctlr_link_down(ctlr)) {
 896                         switch (cdev->enabled) {
 897                         case FCOE_CTLR_DISABLED:
 898                                 pr_info("Link down while interface is disabled.\n");
 899                                 break;
 900                         case FCOE_CTLR_ENABLED:
 901                         case FCOE_CTLR_UNUSED:
 902                                 mutex_lock(&lport->lp_mutex);
 903                                 list_for_each_entry(vport, &lport->vports, list)
 904                                         fc_host_port_type(vport->host) =
 905                                         FC_PORTTYPE_UNKNOWN;
 906                                 mutex_unlock(&lport->lp_mutex);
 907                                 fc_host_port_type(lport->host) =
 908                                         FC_PORTTYPE_UNKNOWN;
 909                                 per_cpu_ptr(lport->stats,
 910                                             get_cpu())->LinkFailureCount++;
 911                                 put_cpu();
 912                                 fcoe_clean_pending_queue(lport);
 913                                 wait_for_upload = 1;
 914                         };
 915                 }
 916         }
 917         mutex_unlock(&bnx2fc_dev_lock);
 918
 919         if (wait_for_upload) {
 920                 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
 921                 init_waitqueue_head(&hba->shutdown_wait);
 922                 BNX2FC_MISC_DBG("indicate_netevent "
 923                                 "num_ofld_sess = %d\n",
 924                                 hba->num_ofld_sess);
 925                 hba->wait_for_link_down = 1;
 926                 wait_event_interruptible(hba->shutdown_wait,
 927                                          (hba->num_ofld_sess == 0));
 928                 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
 929                                 hba->num_ofld_sess);
 930                 hba->wait_for_link_down = 0;
 931
 932                 if (signal_pending(current))
 933                         flush_signals(current);
 934         }
 935 }
 936
 937 static int bnx2fc_libfc_config(struct fc_lport *lport)
 938 {
 939
 940         /* Set the function pointers set by bnx2fc driver */
 941         memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
 942                 sizeof(struct libfc_function_template));
 943         fc_elsct_init(lport);
 944         fc_exch_init(lport);
 945         fc_rport_init(lport);
 946         fc_disc_init(lport);
 947         fc_disc_config(lport, lport);
 948         return 0;
 949 }
 950
 951 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
 952 {
 953         int fcoe_min_xid, fcoe_max_xid;
 954
 955         fcoe_min_xid = hba->max_xid + 1;
 956         if (nr_cpu_ids <= 2)
 957                 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
 958         else
 959                 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
 960         if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
 961                                fcoe_max_xid, NULL)) {
 962                 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
 963                 return -ENOMEM;
 964         }
 965
 966         return 0;
 967 }
 968
 969 static int bnx2fc_lport_config(struct fc_lport *lport)
 970 {
 971         lport->link_up = 0;
 972         lport->qfull = 0;
 973         lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
 974         lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
 975         lport->e_d_tov = 2 * 1000;
 976         lport->r_a_tov = 10 * 1000;
 977
 978         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
 979                                 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
 980         lport->does_npiv = 1;
 981
 982         memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
 983         lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
 984
 985         /* alloc stats structure */
 986         if (fc_lport_init_stats(lport))
 987                 return -ENOMEM;
 988
 989         /* Finish fc_lport configuration */
 990         fc_lport_config(lport);
 991
 992         return 0;
 993 }
 994
 995 /**
 996  * bnx2fc_fip_recv - handle a received FIP frame.
 997  *
 998  * @skb: the received skb
 999  * @dev: associated &net_device
1000  * @ptype: the &packet_type structure which was used to register this handler.
1001  * @orig_dev: original receive &net_device, in case @ dev is a bond.
1002  *
1003  * Returns: 0 for success
1004  */
1005 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1006                            struct packet_type *ptype,
1007                            struct net_device *orig_dev)
1008 {
1009         struct bnx2fc_interface *interface;
1010         struct fcoe_ctlr *ctlr;
1011         interface = container_of(ptype, struct bnx2fc_interface,
1012                                  fip_packet_type);
1013         ctlr = bnx2fc_to_ctlr(interface);
1014         fcoe_ctlr_recv(ctlr, skb);
1015         return 0;
1016 }
1017
1018 /**
1019  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1020  *
1021  * @fip: FCoE controller.
1022  * @old: Unicast MAC address to delete if the MAC is non-zero.
1023  * @new: Unicast MAC address to add.
1024  *
1025  * Remove any previously-set unicast MAC filter.
1026  * Add secondary FCoE MAC address filter for our OUI.
1027  */
1028 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1029 {
1030         struct fcoe_port *port = lport_priv(lport);
1031
1032         memcpy(port->data_src_addr, addr, ETH_ALEN);
1033 }
1034
1035 /**
1036  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1037  *
1038  * @lport: libfc port
1039  */
1040 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1041 {
1042         struct fcoe_port *port;
1043
1044         port = (struct fcoe_port *)lport_priv(lport);
1045         return port->data_src_addr;
1046 }
1047
1048 /**
1049  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1050  *
1051  * @fip: FCoE controller.
1052  * @skb: FIP Packet.
1053  */
1054 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1055 {
1056         skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1057         dev_queue_xmit(skb);
1058 }
1059
1060 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1061 {
1062         struct Scsi_Host *shost = vport_to_shost(vport);
1063         struct fc_lport *n_port = shost_priv(shost);
1064         struct fcoe_port *port = lport_priv(n_port);
1065         struct bnx2fc_interface *interface = port->priv;
1066         struct net_device *netdev = interface->netdev;
1067         struct fc_lport *vn_port;
1068         int rc;
1069         char buf[32];
1070
1071         rc = fcoe_validate_vport_create(vport);
1072         if (rc) {
1073                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1074                 printk(KERN_ERR PFX "Failed to create vport, "
1075                        "WWPN (0x%s) already exists\n",
1076                        buf);
1077                 return rc;
1078         }
1079
1080         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1081                 printk(KERN_ERR PFX "vn ports cannot be created on"
1082                         "this interface\n");
1083                 return -EIO;
1084         }
1085         rtnl_lock();
1086         mutex_lock(&bnx2fc_dev_lock);
1087         vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1088         mutex_unlock(&bnx2fc_dev_lock);
1089         rtnl_unlock();
1090
1091         if (!vn_port) {
1092                 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1093                         netdev->name);
1094                 return -EIO;
1095         }
1096
1097         if (disabled) {
1098                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1099         } else {
1100                 vn_port->boot_time = jiffies;
1101                 fc_lport_init(vn_port);
1102                 fc_fabric_login(vn_port);
1103                 fc_vport_setlink(vn_port);
1104         }
1105         return 0;
1106 }
1107
1108 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1109 {
1110         struct bnx2fc_lport *blport, *tmp;
1111
1112         spin_lock_bh(&hba->hba_lock);
1113         list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1114                 if (blport->lport == lport) {
1115                         list_del(&blport->list);
1116                         kfree(blport);
1117                 }
1118         }
1119         spin_unlock_bh(&hba->hba_lock);
1120 }
1121
1122 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1123 {
1124         struct Scsi_Host *shost = vport_to_shost(vport);
1125         struct fc_lport *n_port = shost_priv(shost);
1126         struct fc_lport *vn_port = vport->dd_data;
1127         struct fcoe_port *port = lport_priv(vn_port);
1128         struct bnx2fc_interface *interface = port->priv;
1129         struct fc_lport *v_port;
1130         bool found = false;
1131
1132         mutex_lock(&n_port->lp_mutex);
1133         list_for_each_entry(v_port, &n_port->vports, list)
1134                 if (v_port->vport == vport) {
1135                         found = true;
1136                         break;
1137                 }
1138
1139         if (!found) {
1140                 mutex_unlock(&n_port->lp_mutex);
1141                 return -ENOENT;
1142         }
1143         list_del(&vn_port->list);
1144         mutex_unlock(&n_port->lp_mutex);
1145         bnx2fc_free_vport(interface->hba, port->lport);
1146         bnx2fc_port_shutdown(port->lport);
1147         bnx2fc_interface_put(interface);
1148         queue_work(bnx2fc_wq, &port->destroy_work);
1149         return 0;
1150 }
1151
1152 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1153 {
1154         struct fc_lport *lport = vport->dd_data;
1155
1156         if (disable) {
1157                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1158                 fc_fabric_logoff(lport);
1159         } else {
1160                 lport->boot_time = jiffies;
1161                 fc_fabric_login(lport);
1162                 fc_vport_setlink(lport);
1163         }
1164         return 0;
1165 }
1166
1167
1168 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1169 {
1170         struct net_device *netdev = interface->netdev;
1171         struct net_device *physdev = interface->hba->phys_dev;
1172         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1173         struct netdev_hw_addr *ha;
1174         int sel_san_mac = 0;
1175
1176         /* setup Source MAC Address */
1177         rcu_read_lock();
1178         for_each_dev_addr(physdev, ha) {
1179                 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1180                                 ha->type);
1181                 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1182                                 ha->addr[1], ha->addr[2], ha->addr[3],
1183                                 ha->addr[4], ha->addr[5]);
1184
1185                 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1186                     (is_valid_ether_addr(ha->addr))) {
1187                         memcpy(ctlr->ctl_src_addr, ha->addr,
1188                                ETH_ALEN);
1189                         sel_san_mac = 1;
1190                         BNX2FC_MISC_DBG("Found SAN MAC\n");
1191                 }
1192         }
1193         rcu_read_unlock();
1194
1195         if (!sel_san_mac)
1196                 return -ENODEV;
1197
1198         interface->fip_packet_type.func = bnx2fc_fip_recv;
1199         interface->fip_packet_type.type = htons(ETH_P_FIP);
1200         interface->fip_packet_type.dev = netdev;
1201         dev_add_pack(&interface->fip_packet_type);
1202
1203         interface->fcoe_packet_type.func = bnx2fc_rcv;
1204         interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1205         interface->fcoe_packet_type.dev = netdev;
1206         dev_add_pack(&interface->fcoe_packet_type);
1207
1208         return 0;
1209 }
1210
1211 static int bnx2fc_attach_transport(void)
1212 {
1213         bnx2fc_transport_template =
1214                 fc_attach_transport(&bnx2fc_transport_function);
1215
1216         if (bnx2fc_transport_template == NULL) {
1217                 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1218                 return -ENODEV;
1219         }
1220
1221         bnx2fc_vport_xport_template =
1222                 fc_attach_transport(&bnx2fc_vport_xport_function);
1223         if (bnx2fc_vport_xport_template == NULL) {
1224                 printk(KERN_ERR PFX
1225                        "Failed to attach FC transport for vport\n");
1226                 fc_release_transport(bnx2fc_transport_template);
1227                 bnx2fc_transport_template = NULL;
1228                 return -ENODEV;
1229         }
1230         return 0;
1231 }
1232 static void bnx2fc_release_transport(void)
1233 {
1234         fc_release_transport(bnx2fc_transport_template);
1235         fc_release_transport(bnx2fc_vport_xport_template);
1236         bnx2fc_transport_template = NULL;
1237         bnx2fc_vport_xport_template = NULL;
1238 }
1239
1240 static void bnx2fc_interface_release(struct kref *kref)
1241 {
1242         struct fcoe_ctlr_device *ctlr_dev;
1243         struct bnx2fc_interface *interface;
1244         struct fcoe_ctlr *ctlr;
1245         struct net_device *netdev;
1246
1247         interface = container_of(kref, struct bnx2fc_interface, kref);
1248         BNX2FC_MISC_DBG("Interface is being released\n");
1249
1250         ctlr = bnx2fc_to_ctlr(interface);
1251         ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1252         netdev = interface->netdev;
1253
1254         /* tear-down FIP controller */
1255         if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1256                 fcoe_ctlr_destroy(ctlr);
1257
1258         fcoe_ctlr_device_delete(ctlr_dev);
1259
1260         dev_put(netdev);
1261         module_put(THIS_MODULE);
1262 }
1263
1264 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1265 {
1266         kref_get(&interface->kref);
1267 }
1268
1269 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1270 {
1271         kref_put(&interface->kref, bnx2fc_interface_release);
1272 }
1273 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1274 {
1275         /* Free the command manager */
1276         if (hba->cmd_mgr) {
1277                 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1278                 hba->cmd_mgr = NULL;
1279         }
1280         kfree(hba->tgt_ofld_list);
1281         bnx2fc_unbind_pcidev(hba);
1282         kfree(hba);
1283 }
1284
1285 /**
1286  * bnx2fc_hba_create - create a new bnx2fc hba
1287  *
1288  * @cnic:       pointer to cnic device
1289  *
1290  * Creates a new FCoE hba on the given device.
1291  *
1292  */
1293 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1294 {
1295         struct bnx2fc_hba *hba;
1296         struct fcoe_capabilities *fcoe_cap;
1297         int rc;
1298
1299         hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1300         if (!hba) {
1301                 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1302                 return NULL;
1303         }
1304         spin_lock_init(&hba->hba_lock);
1305         mutex_init(&hba->hba_mutex);
1306
1307         hba->cnic = cnic;
1308
1309         hba->max_tasks = cnic->max_fcoe_exchanges;
1310         hba->elstm_xids = (hba->max_tasks / 2);
1311         hba->max_outstanding_cmds = hba->elstm_xids;
1312         hba->max_xid = (hba->max_tasks - 1);
1313
1314         rc = bnx2fc_bind_pcidev(hba);
1315         if (rc) {
1316                 printk(KERN_ERR PFX "create_adapter:  bind error\n");
1317                 goto bind_err;
1318         }
1319         hba->phys_dev = cnic->netdev;
1320         hba->next_conn_id = 0;
1321
1322         hba->tgt_ofld_list =
1323                 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1324                         GFP_KERNEL);
1325         if (!hba->tgt_ofld_list) {
1326                 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1327                 goto tgtofld_err;
1328         }
1329
1330         hba->num_ofld_sess = 0;
1331
1332         hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1333         if (!hba->cmd_mgr) {
1334                 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1335                 goto cmgr_err;
1336         }
1337         fcoe_cap = &hba->fcoe_cap;
1338
1339         fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1340                                         FCOE_IOS_PER_CONNECTION_SHIFT;
1341         fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1342                                         FCOE_LOGINS_PER_PORT_SHIFT;
1343         fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1344                                         FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1345         fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1346                                         FCOE_NPIV_WWN_PER_PORT_SHIFT;
1347         fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1348                                         FCOE_TARGETS_SUPPORTED_SHIFT;
1349         fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1350                                         FCOE_OUTSTANDING_COMMANDS_SHIFT;
1351         fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1352
1353         init_waitqueue_head(&hba->shutdown_wait);
1354         init_waitqueue_head(&hba->destroy_wait);
1355         INIT_LIST_HEAD(&hba->vports);
1356
1357         return hba;
1358
1359 cmgr_err:
1360         kfree(hba->tgt_ofld_list);
1361 tgtofld_err:
1362         bnx2fc_unbind_pcidev(hba);
1363 bind_err:
1364         kfree(hba);
1365         return NULL;
1366 }
1367
1368 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1369                                       struct net_device *netdev,
1370                                       enum fip_state fip_mode)
1371 {
1372         struct fcoe_ctlr_device *ctlr_dev;
1373         struct bnx2fc_interface *interface;
1374         struct fcoe_ctlr *ctlr;
1375         int size;
1376         int rc = 0;
1377
1378         size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1379         ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1380                                          size);
1381         if (!ctlr_dev) {
1382                 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1383                 return NULL;
1384         }
1385         ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1386         ctlr->cdev = ctlr_dev;
1387         interface = fcoe_ctlr_priv(ctlr);
1388         dev_hold(netdev);
1389         kref_init(&interface->kref);
1390         interface->hba = hba;
1391         interface->netdev = netdev;
1392
1393         /* Initialize FIP */
1394         fcoe_ctlr_init(ctlr, fip_mode);
1395         ctlr->send = bnx2fc_fip_send;
1396         ctlr->update_mac = bnx2fc_update_src_mac;
1397         ctlr->get_src_addr = bnx2fc_get_src_mac;
1398         set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1399
1400         rc = bnx2fc_interface_setup(interface);
1401         if (!rc)
1402                 return interface;
1403
1404         fcoe_ctlr_destroy(ctlr);
1405         dev_put(netdev);
1406         fcoe_ctlr_device_delete(ctlr_dev);
1407         return NULL;
1408 }
1409
1410 /**
1411  * bnx2fc_if_create - Create FCoE instance on a given interface
1412  *
1413  * @interface:  FCoE interface to create a local port on
1414  * @parent:     Device pointer to be the parent in sysfs for the SCSI host
1415  * @npiv:       Indicates if the port is vport or not
1416  *
1417  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1418  *
1419  * Returns:     Allocated fc_lport or an error pointer
1420  */
1421 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1422                                   struct device *parent, int npiv)
1423 {
1424         struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1425         struct fc_lport         *lport, *n_port;
1426         struct fcoe_port        *port;
1427         struct Scsi_Host        *shost;
1428         struct fc_vport         *vport = dev_to_vport(parent);
1429         struct bnx2fc_lport     *blport;
1430         struct bnx2fc_hba       *hba = interface->hba;
1431         int                     rc = 0;
1432
1433         blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1434         if (!blport) {
1435                 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1436                 return NULL;
1437         }
1438
1439         /* Allocate Scsi_Host structure */
1440         bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1441         if (!npiv)
1442                 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1443         else
1444                 lport = libfc_vport_create(vport, sizeof(*port));
1445
1446         if (!lport) {
1447                 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1448                 goto free_blport;
1449         }
1450         shost = lport->host;
1451         port = lport_priv(lport);
1452         port->lport = lport;
1453         port->priv = interface;
1454         port->get_netdev = bnx2fc_netdev;
1455         INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1456
1457         /* Configure fcoe_port */
1458         rc = bnx2fc_lport_config(lport);
1459         if (rc)
1460                 goto lp_config_err;
1461
1462         if (npiv) {
1463                 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1464                         vport->node_name, vport->port_name);
1465                 fc_set_wwnn(lport, vport->node_name);
1466                 fc_set_wwpn(lport, vport->port_name);
1467         }
1468         /* Configure netdev and networking properties of the lport */
1469         rc = bnx2fc_net_config(lport, interface->netdev);
1470         if (rc) {
1471                 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1472                 goto lp_config_err;
1473         }
1474
1475         rc = bnx2fc_shost_config(lport, parent);
1476         if (rc) {
1477                 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1478                         interface->netdev->name);
1479                 goto lp_config_err;
1480         }
1481
1482         /* Initialize the libfc library */
1483         rc = bnx2fc_libfc_config(lport);
1484         if (rc) {
1485                 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1486                 goto shost_err;
1487         }
1488         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1489
1490         /* Allocate exchange manager */
1491         if (!npiv)
1492                 rc = bnx2fc_em_config(lport, hba);
1493         else {
1494                 shost = vport_to_shost(vport);
1495                 n_port = shost_priv(shost);
1496                 rc = fc_exch_mgr_list_clone(n_port, lport);
1497         }
1498
1499         if (rc) {
1500                 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1501                 goto shost_err;
1502         }
1503
1504         bnx2fc_interface_get(interface);
1505
1506         spin_lock_bh(&hba->hba_lock);
1507         blport->lport = lport;
1508         list_add_tail(&blport->list, &hba->vports);
1509         spin_unlock_bh(&hba->hba_lock);
1510
1511         return lport;
1512
1513 shost_err:
1514         scsi_remove_host(shost);
1515 lp_config_err:
1516         scsi_host_put(lport->host);
1517 free_blport:
1518         kfree(blport);
1519         return NULL;
1520 }
1521
1522 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1523 {
1524         /* Dont listen for Ethernet packets anymore */
1525         __dev_remove_pack(&interface->fcoe_packet_type);
1526         __dev_remove_pack(&interface->fip_packet_type);
1527         synchronize_net();
1528 }
1529
1530 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1531 {
1532         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1533         struct fc_lport *lport = ctlr->lp;
1534         struct fcoe_port *port = lport_priv(lport);
1535         struct bnx2fc_hba *hba = interface->hba;
1536
1537         /* Stop the transmit retry timer */
1538         del_timer_sync(&port->timer);
1539
1540         /* Free existing transmit skbs */
1541         fcoe_clean_pending_queue(lport);
1542
1543         bnx2fc_net_cleanup(interface);
1544
1545         bnx2fc_free_vport(hba, lport);
1546 }
1547
1548 static void bnx2fc_if_destroy(struct fc_lport *lport)
1549 {
1550
1551         /* Free queued packets for the receive thread */
1552         bnx2fc_clean_rx_queue(lport);
1553
1554         /* Detach from scsi-ml */
1555         fc_remove_host(lport->host);
1556         scsi_remove_host(lport->host);
1557
1558         /*
1559          * Note that only the physical lport will have the exchange manager.
1560          * for vports, this function is NOP
1561          */
1562         fc_exch_mgr_free(lport);
1563
1564         /* Free memory used by statistical counters */
1565         fc_lport_free_stats(lport);
1566
1567         /* Release Scsi_Host */
1568         scsi_host_put(lport->host);
1569 }
1570
1571 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1572 {
1573         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1574         struct fc_lport *lport = ctlr->lp;
1575         struct fcoe_port *port = lport_priv(lport);
1576
1577         bnx2fc_interface_cleanup(interface);
1578         bnx2fc_stop(interface);
1579         list_del(&interface->list);
1580         bnx2fc_interface_put(interface);
1581         queue_work(bnx2fc_wq, &port->destroy_work);
1582 }
1583
1584 /**
1585  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1586  *
1587  * @buffer: The name of the Ethernet interface to be destroyed
1588  * @kp:     The associated kernel parameter
1589  *
1590  * Called from sysfs.
1591  *
1592  * Returns: 0 for success
1593  */
1594 static int bnx2fc_destroy(struct net_device *netdev)
1595 {
1596         struct bnx2fc_interface *interface = NULL;
1597         struct workqueue_struct *timer_work_queue;
1598         struct fcoe_ctlr *ctlr;
1599         int rc = 0;
1600
1601         rtnl_lock();
1602         mutex_lock(&bnx2fc_dev_lock);
1603
1604         interface = bnx2fc_interface_lookup(netdev);
1605         ctlr = bnx2fc_to_ctlr(interface);
1606         if (!interface || !ctlr->lp) {
1607                 rc = -ENODEV;
1608                 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1609                 goto netdev_err;
1610         }
1611
1612         timer_work_queue = interface->timer_work_queue;
1613         __bnx2fc_destroy(interface);
1614         destroy_workqueue(timer_work_queue);
1615
1616 netdev_err:
1617         mutex_unlock(&bnx2fc_dev_lock);
1618         rtnl_unlock();
1619         return rc;
1620 }
1621
1622 static void bnx2fc_destroy_work(struct work_struct *work)
1623 {
1624         struct fcoe_port *port;
1625         struct fc_lport *lport;
1626
1627         port = container_of(work, struct fcoe_port, destroy_work);
1628         lport = port->lport;
1629
1630         BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1631
1632         bnx2fc_if_destroy(lport);
1633 }
1634
1635 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1636 {
1637         bnx2fc_free_fw_resc(hba);
1638         bnx2fc_free_task_ctx(hba);
1639 }
1640
1641 /**
1642  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1643  *                      pci structure
1644  *
1645  * @hba:                Adapter instance
1646  */
1647 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1648 {
1649         if (bnx2fc_setup_task_ctx(hba))
1650                 goto mem_err;
1651
1652         if (bnx2fc_setup_fw_resc(hba))
1653                 goto mem_err;
1654
1655         return 0;
1656 mem_err:
1657         bnx2fc_unbind_adapter_devices(hba);
1658         return -ENOMEM;
1659 }
1660
1661 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1662 {
1663         struct cnic_dev *cnic;
1664         struct pci_dev *pdev;
1665
1666         if (!hba->cnic) {
1667                 printk(KERN_ERR PFX "cnic is NULL\n");
1668                 return -ENODEV;
1669         }
1670         cnic = hba->cnic;
1671         pdev = hba->pcidev = cnic->pcidev;
1672         if (!hba->pcidev)
1673                 return -ENODEV;
1674
1675         switch (pdev->device) {
1676         case PCI_DEVICE_ID_NX2_57710:
1677                 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1678                 break;
1679         case PCI_DEVICE_ID_NX2_57711:
1680                 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1681                 break;
1682         case PCI_DEVICE_ID_NX2_57712:
1683         case PCI_DEVICE_ID_NX2_57712_MF:
1684         case PCI_DEVICE_ID_NX2_57712_VF:
1685                 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1686                 break;
1687         case PCI_DEVICE_ID_NX2_57800:
1688         case PCI_DEVICE_ID_NX2_57800_MF:
1689         case PCI_DEVICE_ID_NX2_57800_VF:
1690                 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1691                 break;
1692         case PCI_DEVICE_ID_NX2_57810:
1693         case PCI_DEVICE_ID_NX2_57810_MF:
1694         case PCI_DEVICE_ID_NX2_57810_VF:
1695                 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1696                 break;
1697         case PCI_DEVICE_ID_NX2_57840:
1698         case PCI_DEVICE_ID_NX2_57840_MF:
1699         case PCI_DEVICE_ID_NX2_57840_VF:
1700         case PCI_DEVICE_ID_NX2_57840_2_20:
1701         case PCI_DEVICE_ID_NX2_57840_4_10:
1702                 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1703                 break;
1704         default:
1705                 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1706                 break;
1707         }
1708         pci_dev_get(hba->pcidev);
1709         return 0;
1710 }
1711
1712 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1713 {
1714         if (hba->pcidev) {
1715                 hba->chip_num[0] = '\0';
1716                 pci_dev_put(hba->pcidev);
1717         }
1718         hba->pcidev = NULL;
1719 }
1720
1721 /**
1722  * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1723  *
1724  * @handle:    transport handle pointing to adapter struture
1725  */
1726 static int bnx2fc_ulp_get_stats(void *handle)
1727 {
1728         struct bnx2fc_hba *hba = handle;
1729         struct cnic_dev *cnic;
1730         struct fcoe_stats_info *stats_addr;
1731
1732         if (!hba)
1733                 return -EINVAL;
1734
1735         cnic = hba->cnic;
1736         stats_addr = &cnic->stats_addr->fcoe_stat;
1737         if (!stats_addr)
1738                 return -EINVAL;
1739
1740         strncpy(stats_addr->version, BNX2FC_VERSION,
1741                 sizeof(stats_addr->version));
1742         stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1743         stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1744
1745         return 0;
1746 }
1747
1748
1749 /**
1750  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1751  *
1752  * @handle:     transport handle pointing to adapter structure
1753  *
1754  * This function maps adapter structure to pcidev structure and initiates
1755  *      firmware handshake to enable/initialize on-chip FCoE components.
1756  *      This bnx2fc - cnic interface api callback is used after following
1757  *      conditions are met -
1758  *      a) underlying network interface is up (marked by event NETDEV_UP
1759  *              from netdev
1760  *      b) bnx2fc adatper structure is registered.
1761  */
1762 static void bnx2fc_ulp_start(void *handle)
1763 {
1764         struct bnx2fc_hba *hba = handle;
1765         struct bnx2fc_interface *interface;
1766         struct fcoe_ctlr *ctlr;
1767         struct fc_lport *lport;
1768
1769         mutex_lock(&bnx2fc_dev_lock);
1770
1771         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1772                 bnx2fc_fw_init(hba);
1773
1774         BNX2FC_MISC_DBG("bnx2fc started.\n");
1775
1776         list_for_each_entry(interface, &if_list, list) {
1777                 if (interface->hba == hba) {
1778                         ctlr = bnx2fc_to_ctlr(interface);
1779                         lport = ctlr->lp;
1780                         /* Kick off Fabric discovery*/
1781                         printk(KERN_ERR PFX "ulp_init: start discovery\n");
1782                         lport->tt.frame_send = bnx2fc_xmit;
1783                         bnx2fc_start_disc(interface);
1784                 }
1785         }
1786
1787         mutex_unlock(&bnx2fc_dev_lock);
1788 }
1789
1790 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1791 {
1792         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1793         fc_fabric_logoff(lport);
1794         fc_lport_destroy(lport);
1795 }
1796
1797 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1798 {
1799         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1800         struct fc_lport *lport;
1801         struct fc_lport *vport;
1802
1803         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1804                 return;
1805
1806         lport = ctlr->lp;
1807         bnx2fc_port_shutdown(lport);
1808
1809         mutex_lock(&lport->lp_mutex);
1810         list_for_each_entry(vport, &lport->vports, list)
1811                 fc_host_port_type(vport->host) =
1812                                         FC_PORTTYPE_UNKNOWN;
1813         mutex_unlock(&lport->lp_mutex);
1814         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1815         fcoe_ctlr_link_down(ctlr);
1816         fcoe_clean_pending_queue(lport);
1817 }
1818
1819 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1820 {
1821 #define BNX2FC_INIT_POLL_TIME           (1000 / HZ)
1822         int rc = -1;
1823         int i = HZ;
1824
1825         rc = bnx2fc_bind_adapter_devices(hba);
1826         if (rc) {
1827                 printk(KERN_ALERT PFX
1828                         "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1829                 goto err_out;
1830         }
1831
1832         rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1833         if (rc) {
1834                 printk(KERN_ALERT PFX
1835                         "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1836                 goto err_unbind;
1837         }
1838
1839         /*
1840          * Wait until the adapter init message is complete, and adapter
1841          * state is UP.
1842          */
1843         while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1844                 msleep(BNX2FC_INIT_POLL_TIME);
1845
1846         if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1847                 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1848                                 "Ignoring...\n",
1849                                 hba->cnic->netdev->name);
1850                 rc = -1;
1851                 goto err_unbind;
1852         }
1853
1854
1855         set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1856         return 0;
1857
1858 err_unbind:
1859         bnx2fc_unbind_adapter_devices(hba);
1860 err_out:
1861         return rc;
1862 }
1863
1864 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1865 {
1866         if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1867                 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1868                         init_timer(&hba->destroy_timer);
1869                         hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1870                                                                 jiffies;
1871                         hba->destroy_timer.function = bnx2fc_destroy_timer;
1872                         hba->destroy_timer.data = (unsigned long)hba;
1873                         add_timer(&hba->destroy_timer);
1874                         wait_event_interruptible(hba->destroy_wait,
1875                                         test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1876                                                  &hba->flags));
1877                         clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1878                         /* This should never happen */
1879                         if (signal_pending(current))
1880                                 flush_signals(current);
1881
1882                         del_timer_sync(&hba->destroy_timer);
1883                 }
1884                 bnx2fc_unbind_adapter_devices(hba);
1885         }
1886 }
1887
1888 /**
1889  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1890  *
1891  * @handle:     transport handle pointing to adapter structure
1892  *
1893  * Driver checks if adapter is already in shutdown mode, if not start
1894  *      the shutdown process.
1895  */
1896 static void bnx2fc_ulp_stop(void *handle)
1897 {
1898         struct bnx2fc_hba *hba = handle;
1899         struct bnx2fc_interface *interface;
1900
1901         printk(KERN_ERR "ULP_STOP\n");
1902
1903         mutex_lock(&bnx2fc_dev_lock);
1904         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1905                 goto exit;
1906         list_for_each_entry(interface, &if_list, list) {
1907                 if (interface->hba == hba)
1908                         bnx2fc_stop(interface);
1909         }
1910         BUG_ON(hba->num_ofld_sess != 0);
1911
1912         mutex_lock(&hba->hba_mutex);
1913         clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1914         clear_bit(ADAPTER_STATE_GOING_DOWN,
1915                   &hba->adapter_state);
1916
1917         clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1918         mutex_unlock(&hba->hba_mutex);
1919
1920         bnx2fc_fw_destroy(hba);
1921 exit:
1922         mutex_unlock(&bnx2fc_dev_lock);
1923 }
1924
1925 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1926 {
1927         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1928         struct fc_lport *lport;
1929         int wait_cnt = 0;
1930
1931         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1932         /* Kick off FIP/FLOGI */
1933         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1934                 printk(KERN_ERR PFX "Init not done yet\n");
1935                 return;
1936         }
1937
1938         lport = ctlr->lp;
1939         BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1940
1941         if (!bnx2fc_link_ok(lport) && interface->enabled) {
1942                 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1943                 fcoe_ctlr_link_up(ctlr);
1944                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1945                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1946         }
1947
1948         /* wait for the FCF to be selected before issuing FLOGI */
1949         while (!ctlr->sel_fcf) {
1950                 msleep(250);
1951                 /* give up after 3 secs */
1952                 if (++wait_cnt > 12)
1953                         break;
1954         }
1955
1956         /* Reset max receive frame size to default */
1957         if (fc_set_mfs(lport, BNX2FC_MFS))
1958                 return;
1959
1960         fc_lport_init(lport);
1961         fc_fabric_login(lport);
1962 }
1963
1964
1965 /**
1966  * bnx2fc_ulp_init - Initialize an adapter instance
1967  *
1968  * @dev :       cnic device handle
1969  * Called from cnic_register_driver() context to initialize all
1970  *      enumerated cnic devices. This routine allocates adapter structure
1971  *      and other device specific resources.
1972  */
1973 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1974 {
1975         struct bnx2fc_hba *hba;
1976         int rc = 0;
1977
1978         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1979         /* bnx2fc works only when bnx2x is loaded */
1980         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1981             (dev->max_fcoe_conn == 0)) {
1982                 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1983                                     " flags: %lx fcoe_conn: %d\n",
1984                         dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1985                 return;
1986         }
1987
1988         hba = bnx2fc_hba_create(dev);
1989         if (!hba) {
1990                 printk(KERN_ERR PFX "hba initialization failed\n");
1991                 return;
1992         }
1993
1994         /* Add HBA to the adapter list */
1995         mutex_lock(&bnx2fc_dev_lock);
1996         list_add_tail(&hba->list, &adapter_list);
1997         adapter_count++;
1998         mutex_unlock(&bnx2fc_dev_lock);
1999
2000         dev->fcoe_cap = &hba->fcoe_cap;
2001         clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2002         rc = dev->register_device(dev, CNIC_ULP_FCOE,
2003                                                 (void *) hba);
2004         if (rc)
2005                 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2006         else
2007                 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2008 }
2009
2010 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2011 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2012 {
2013         struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2014
2015         if (interface->enabled == true) {
2016                 if (!ctlr->lp) {
2017                         pr_err(PFX "__bnx2fc_disable: lport not found\n");
2018                         return -ENODEV;
2019                 } else {
2020                         interface->enabled = false;
2021                         fcoe_ctlr_link_down(ctlr);
2022                         fcoe_clean_pending_queue(ctlr->lp);
2023                 }
2024         }
2025         return 0;
2026 }
2027
2028 /**
2029  * Deperecated: Use bnx2fc_enabled()
2030  */
2031 static int bnx2fc_disable(struct net_device *netdev)
2032 {
2033         struct bnx2fc_interface *interface;
2034         struct fcoe_ctlr *ctlr;
2035         int rc = 0;
2036
2037         rtnl_lock();
2038         mutex_lock(&bnx2fc_dev_lock);
2039
2040         interface = bnx2fc_interface_lookup(netdev);
2041         ctlr = bnx2fc_to_ctlr(interface);
2042
2043         if (!interface) {
2044                 rc = -ENODEV;
2045                 pr_err(PFX "bnx2fc_disable: interface not found\n");
2046         } else {
2047                 rc = __bnx2fc_disable(ctlr);
2048         }
2049         mutex_unlock(&bnx2fc_dev_lock);
2050         rtnl_unlock();
2051         return rc;
2052 }
2053
2054 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2055 {
2056         struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2057
2058         if (interface->enabled == false) {
2059                 if (!ctlr->lp) {
2060                         pr_err(PFX "__bnx2fc_enable: lport not found\n");
2061                         return -ENODEV;
2062                 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2063                         fcoe_ctlr_link_up(ctlr);
2064                         interface->enabled = true;
2065                 }
2066         }
2067         return 0;
2068 }
2069
2070 /**
2071  * Deprecated: Use bnx2fc_enabled()
2072  */
2073 static int bnx2fc_enable(struct net_device *netdev)
2074 {
2075         struct bnx2fc_interface *interface;
2076         struct fcoe_ctlr *ctlr;
2077         int rc = 0;
2078
2079         rtnl_lock();
2080         mutex_lock(&bnx2fc_dev_lock);
2081
2082         interface = bnx2fc_interface_lookup(netdev);
2083         ctlr = bnx2fc_to_ctlr(interface);
2084         if (!interface) {
2085                 rc = -ENODEV;
2086                 pr_err(PFX "bnx2fc_enable: interface not found\n");
2087         } else {
2088                 rc = __bnx2fc_enable(ctlr);
2089         }
2090
2091         mutex_unlock(&bnx2fc_dev_lock);
2092         rtnl_unlock();
2093         return rc;
2094 }
2095
2096 /**
2097  * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2098  * @cdev: The FCoE Controller that is being enabled or disabled
2099  *
2100  * fcoe_sysfs will ensure that the state of 'enabled' has
2101  * changed, so no checking is necessary here. This routine simply
2102  * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2103  * When those routines are removed the functionality can be merged
2104  * here.
2105  */
2106 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2107 {
2108         struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2109
2110         switch (cdev->enabled) {
2111         case FCOE_CTLR_ENABLED:
2112                 return __bnx2fc_enable(ctlr);
2113         case FCOE_CTLR_DISABLED:
2114                 return __bnx2fc_disable(ctlr);
2115         case FCOE_CTLR_UNUSED:
2116         default:
2117                 return -ENOTSUPP;
2118         };
2119 }
2120
2121 enum bnx2fc_create_link_state {
2122         BNX2FC_CREATE_LINK_DOWN,
2123         BNX2FC_CREATE_LINK_UP,
2124 };
2125
2126 /**
2127  * _bnx2fc_create() - Create bnx2fc FCoE interface
2128  * @netdev  :   The net_device object the Ethernet interface to create on
2129  * @fip_mode:   The FIP mode for this creation
2130  * @link_state: The ctlr link state on creation
2131  *
2132  * Called from either the libfcoe 'create' module parameter
2133  * via fcoe_create or from fcoe_syfs's ctlr_create file.
2134  *
2135  * libfcoe's 'create' module parameter is deprecated so some
2136  * consolidation of code can be done when that interface is
2137  * removed.
2138  *
2139  * Returns: 0 for success
2140  */
2141 static int _bnx2fc_create(struct net_device *netdev,
2142                           enum fip_state fip_mode,
2143                           enum bnx2fc_create_link_state link_state)
2144 {
2145         struct fcoe_ctlr_device *cdev;
2146         struct fcoe_ctlr *ctlr;
2147         struct bnx2fc_interface *interface;
2148         struct bnx2fc_hba *hba;
2149         struct net_device *phys_dev = netdev;
2150         struct fc_lport *lport;
2151         struct ethtool_drvinfo drvinfo;
2152         int rc = 0;
2153         int vlan_id = 0;
2154
2155         BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2156         if (fip_mode != FIP_MODE_FABRIC) {
2157                 printk(KERN_ERR "fip mode not FABRIC\n");
2158                 return -EIO;
2159         }
2160
2161         rtnl_lock();
2162
2163         mutex_lock(&bnx2fc_dev_lock);
2164
2165         if (!try_module_get(THIS_MODULE)) {
2166                 rc = -EINVAL;
2167                 goto mod_err;
2168         }
2169
2170         /* obtain physical netdev */
2171         if (netdev->priv_flags & IFF_802_1Q_VLAN)
2172                 phys_dev = vlan_dev_real_dev(netdev);
2173
2174         /* verify if the physical device is a netxtreme2 device */
2175         if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2176                 memset(&drvinfo, 0, sizeof(drvinfo));
2177                 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2178                 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2179                         printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2180                         rc = -EINVAL;
2181                         goto netdev_err;
2182                 }
2183         } else {
2184                 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2185                 rc = -EINVAL;
2186                 goto netdev_err;
2187         }
2188
2189         /* obtain interface and initialize rest of the structure */
2190         hba = bnx2fc_hba_lookup(phys_dev);
2191         if (!hba) {
2192                 rc = -ENODEV;
2193                 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2194                 goto netdev_err;
2195         }
2196
2197         if (bnx2fc_interface_lookup(netdev)) {
2198                 rc = -EEXIST;
2199                 goto netdev_err;
2200         }
2201
2202         interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2203         if (!interface) {
2204                 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2205                 rc = -ENOMEM;
2206                 goto ifput_err;
2207         }
2208
2209         if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2210                 vlan_id = vlan_dev_vlan_id(netdev);
2211                 interface->vlan_enabled = 1;
2212         }
2213
2214         ctlr = bnx2fc_to_ctlr(interface);
2215         cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2216         interface->vlan_id = vlan_id;
2217
2218         interface->timer_work_queue =
2219                         create_singlethread_workqueue("bnx2fc_timer_wq");
2220         if (!interface->timer_work_queue) {
2221                 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2222                 rc = -EINVAL;
2223                 goto ifput_err;
2224         }
2225
2226         lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2227         if (!lport) {
2228                 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2229                         netdev->name);
2230                 rc = -EINVAL;
2231                 goto if_create_err;
2232         }
2233
2234         /* Add interface to if_list */
2235         list_add_tail(&interface->list, &if_list);
2236
2237         lport->boot_time = jiffies;
2238
2239         /* Make this master N_port */
2240         ctlr->lp = lport;
2241
2242         if (link_state == BNX2FC_CREATE_LINK_UP)
2243                 cdev->enabled = FCOE_CTLR_ENABLED;
2244         else
2245                 cdev->enabled = FCOE_CTLR_DISABLED;
2246
2247         if (link_state == BNX2FC_CREATE_LINK_UP &&
2248             !bnx2fc_link_ok(lport)) {
2249                 fcoe_ctlr_link_up(ctlr);
2250                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2251                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2252         }
2253
2254         BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2255         bnx2fc_start_disc(interface);
2256
2257         if (link_state == BNX2FC_CREATE_LINK_UP)
2258                 interface->enabled = true;
2259
2260         /*
2261          * Release from kref_init in bnx2fc_interface_setup, on success
2262          * lport should be holding a reference taken in bnx2fc_if_create
2263          */
2264         bnx2fc_interface_put(interface);
2265         /* put netdev that was held while calling dev_get_by_name */
2266         mutex_unlock(&bnx2fc_dev_lock);
2267         rtnl_unlock();
2268         return 0;
2269
2270 if_create_err:
2271         destroy_workqueue(interface->timer_work_queue);
2272 ifput_err:
2273         bnx2fc_net_cleanup(interface);
2274         bnx2fc_interface_put(interface);
2275         goto mod_err;
2276 netdev_err:
2277         module_put(THIS_MODULE);
2278 mod_err:
2279         mutex_unlock(&bnx2fc_dev_lock);
2280         rtnl_unlock();
2281         return rc;
2282 }
2283
2284 /**
2285  * bnx2fc_create() - Create a bnx2fc interface
2286  * @netdev  : The net_device object the Ethernet interface to create on
2287  * @fip_mode: The FIP mode for this creation
2288  *
2289  * Called from fcoe transport
2290  *
2291  * Returns: 0 for success
2292  */
2293 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2294 {
2295         return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2296 }
2297
2298 /**
2299  * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2300  * @netdev: The net_device to be used by the allocated FCoE Controller
2301  *
2302  * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2303  * in a link_down state. The allows the user an opportunity to configure
2304  * the FCoE Controller from sysfs before enabling the FCoE Controller.
2305  *
2306  * Creating in with this routine starts the FCoE Controller in Fabric
2307  * mode. The user can change to VN2VN or another mode before enabling.
2308  */
2309 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2310 {
2311         return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2312                               BNX2FC_CREATE_LINK_DOWN);
2313 }
2314
2315 /**
2316  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2317  *
2318  * @cnic:       Pointer to cnic device instance
2319  *
2320  **/
2321 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2322 {
2323         struct bnx2fc_hba *hba;
2324
2325         /* Called with bnx2fc_dev_lock held */
2326         list_for_each_entry(hba, &adapter_list, list) {
2327                 if (hba->cnic == cnic)
2328                         return hba;
2329         }
2330         return NULL;
2331 }
2332
2333 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2334                                                         *netdev)
2335 {
2336         struct bnx2fc_interface *interface;
2337
2338         /* Called with bnx2fc_dev_lock held */
2339         list_for_each_entry(interface, &if_list, list) {
2340                 if (interface->netdev == netdev)
2341                         return interface;
2342         }
2343         return NULL;
2344 }
2345
2346 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2347                                                       *phys_dev)
2348 {
2349         struct bnx2fc_hba *hba;
2350
2351         /* Called with bnx2fc_dev_lock held */
2352         list_for_each_entry(hba, &adapter_list, list) {
2353                 if (hba->phys_dev == phys_dev)
2354                         return hba;
2355         }
2356         printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2357         return NULL;
2358 }
2359
2360 /**
2361  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2362  *
2363  * @dev         cnic device handle
2364  */
2365 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2366 {
2367         struct bnx2fc_hba *hba;
2368         struct bnx2fc_interface *interface, *tmp;
2369
2370         BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2371
2372         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2373                 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2374                         dev->netdev->name, dev->flags);
2375                 return;
2376         }
2377
2378         mutex_lock(&bnx2fc_dev_lock);
2379         hba = bnx2fc_find_hba_for_cnic(dev);
2380         if (!hba) {
2381                 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2382                        dev);
2383                 mutex_unlock(&bnx2fc_dev_lock);
2384                 return;
2385         }
2386
2387         list_del_init(&hba->list);
2388         adapter_count--;
2389
2390         list_for_each_entry_safe(interface, tmp, &if_list, list)
2391                 /* destroy not called yet, move to quiesced list */
2392                 if (interface->hba == hba)
2393                         __bnx2fc_destroy(interface);
2394         mutex_unlock(&bnx2fc_dev_lock);
2395
2396         /* Ensure ALL destroy work has been completed before return */
2397         flush_workqueue(bnx2fc_wq);
2398
2399         bnx2fc_ulp_stop(hba);
2400         /* unregister cnic device */
2401         if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2402                 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2403         bnx2fc_hba_destroy(hba);
2404 }
2405
2406 /**
2407  * bnx2fc_fcoe_reset - Resets the fcoe
2408  *
2409  * @shost: shost the reset is from
2410  *
2411  * Returns: always 0
2412  */
2413 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2414 {
2415         struct fc_lport *lport = shost_priv(shost);
2416         fc_lport_reset(lport);
2417         return 0;
2418 }
2419
2420
2421 static bool bnx2fc_match(struct net_device *netdev)
2422 {
2423         struct net_device *phys_dev = netdev;
2424
2425         mutex_lock(&bnx2fc_dev_lock);
2426         if (netdev->priv_flags & IFF_802_1Q_VLAN)
2427                 phys_dev = vlan_dev_real_dev(netdev);
2428
2429         if (bnx2fc_hba_lookup(phys_dev)) {
2430                 mutex_unlock(&bnx2fc_dev_lock);
2431                 return true;
2432         }
2433
2434         mutex_unlock(&bnx2fc_dev_lock);
2435         return false;
2436 }
2437
2438
2439 static struct fcoe_transport bnx2fc_transport = {
2440         .name = {"bnx2fc"},
2441         .attached = false,
2442         .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2443         .alloc = bnx2fc_ctlr_alloc,
2444         .match = bnx2fc_match,
2445         .create = bnx2fc_create,
2446         .destroy = bnx2fc_destroy,
2447         .enable = bnx2fc_enable,
2448         .disable = bnx2fc_disable,
2449 };
2450
2451 /**
2452  * bnx2fc_percpu_thread_create - Create a receive thread for an
2453  *                               online CPU
2454  *
2455  * @cpu: cpu index for the online cpu
2456  */
2457 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2458 {
2459         struct bnx2fc_percpu_s *p;
2460         struct task_struct *thread;
2461
2462         p = &per_cpu(bnx2fc_percpu, cpu);
2463
2464         thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2465                                         (void *)p, cpu_to_node(cpu),
2466                                         "bnx2fc_thread/%d", cpu);
2467         /* bind thread to the cpu */
2468         if (likely(!IS_ERR(thread))) {
2469                 kthread_bind(thread, cpu);
2470                 p->iothread = thread;
2471                 wake_up_process(thread);
2472         }
2473 }
2474
2475 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2476 {
2477         struct bnx2fc_percpu_s *p;
2478         struct task_struct *thread;
2479         struct bnx2fc_work *work, *tmp;
2480
2481         BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2482
2483         /* Prevent any new work from being queued for this CPU */
2484         p = &per_cpu(bnx2fc_percpu, cpu);
2485         spin_lock_bh(&p->fp_work_lock);
2486         thread = p->iothread;
2487         p->iothread = NULL;
2488
2489
2490         /* Free all work in the list */
2491         list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2492                 list_del_init(&work->list);
2493                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2494                 kfree(work);
2495         }
2496
2497         spin_unlock_bh(&p->fp_work_lock);
2498
2499         if (thread)
2500                 kthread_stop(thread);
2501 }
2502
2503 /**
2504  * bnx2fc_cpu_callback - Handler for CPU hotplug events
2505  *
2506  * @nfb:    The callback data block
2507  * @action: The event triggering the callback
2508  * @hcpu:   The index of the CPU that the event is for
2509  *
2510  * This creates or destroys per-CPU data for fcoe
2511  *
2512  * Returns NOTIFY_OK always.
2513  */
2514 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2515                              unsigned long action, void *hcpu)
2516 {
2517         unsigned cpu = (unsigned long)hcpu;
2518
2519         switch (action) {
2520         case CPU_ONLINE:
2521         case CPU_ONLINE_FROZEN:
2522                 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2523                 bnx2fc_percpu_thread_create(cpu);
2524                 break;
2525         case CPU_DEAD:
2526         case CPU_DEAD_FROZEN:
2527                 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2528                 bnx2fc_percpu_thread_destroy(cpu);
2529                 break;
2530         default:
2531                 break;
2532         }
2533         return NOTIFY_OK;
2534 }
2535
2536 /**
2537  * bnx2fc_mod_init - module init entry point
2538  *
2539  * Initialize driver wide global data structures, and register
2540  * with cnic module
2541  **/
2542 static int __init bnx2fc_mod_init(void)
2543 {
2544         struct fcoe_percpu_s *bg;
2545         struct task_struct *l2_thread;
2546         int rc = 0;
2547         unsigned int cpu = 0;
2548         struct bnx2fc_percpu_s *p;
2549
2550         printk(KERN_INFO PFX "%s", version);
2551
2552         /* register as a fcoe transport */
2553         rc = fcoe_transport_attach(&bnx2fc_transport);
2554         if (rc) {
2555                 printk(KERN_ERR "failed to register an fcoe transport, check "
2556                         "if libfcoe is loaded\n");
2557                 goto out;
2558         }
2559
2560         INIT_LIST_HEAD(&adapter_list);
2561         INIT_LIST_HEAD(&if_list);
2562         mutex_init(&bnx2fc_dev_lock);
2563         adapter_count = 0;
2564
2565         /* Attach FC transport template */
2566         rc = bnx2fc_attach_transport();
2567         if (rc)
2568                 goto detach_ft;
2569
2570         bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2571         if (!bnx2fc_wq) {
2572                 rc = -ENOMEM;
2573                 goto release_bt;
2574         }
2575
2576         bg = &bnx2fc_global;
2577         skb_queue_head_init(&bg->fcoe_rx_list);
2578         l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2579                                    (void *)bg,
2580                                    "bnx2fc_l2_thread");
2581         if (IS_ERR(l2_thread)) {
2582                 rc = PTR_ERR(l2_thread);
2583                 goto free_wq;
2584         }
2585         wake_up_process(l2_thread);
2586         spin_lock_bh(&bg->fcoe_rx_list.lock);
2587         bg->thread = l2_thread;
2588         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2589
2590         for_each_possible_cpu(cpu) {
2591                 p = &per_cpu(bnx2fc_percpu, cpu);
2592                 INIT_LIST_HEAD(&p->work_list);
2593                 spin_lock_init(&p->fp_work_lock);
2594         }
2595
2596         cpu_notifier_register_begin();
2597
2598         for_each_online_cpu(cpu) {
2599                 bnx2fc_percpu_thread_create(cpu);
2600         }
2601
2602         /* Initialize per CPU interrupt thread */
2603         __register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2604
2605         cpu_notifier_register_done();
2606
2607         cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2608
2609         return 0;
2610
2611 free_wq:
2612         destroy_workqueue(bnx2fc_wq);
2613 release_bt:
2614         bnx2fc_release_transport();
2615 detach_ft:
2616         fcoe_transport_detach(&bnx2fc_transport);
2617 out:
2618         return rc;
2619 }
2620
2621 static void __exit bnx2fc_mod_exit(void)
2622 {
2623         LIST_HEAD(to_be_deleted);
2624         struct bnx2fc_hba *hba, *next;
2625         struct fcoe_percpu_s *bg;
2626         struct task_struct *l2_thread;
2627         struct sk_buff *skb;
2628         unsigned int cpu = 0;
2629
2630         /*
2631          * NOTE: Since cnic calls register_driver routine rtnl_lock,
2632          * it will have higher precedence than bnx2fc_dev_lock.
2633          * unregister_device() cannot be called with bnx2fc_dev_lock
2634          * held.
2635          */
2636         mutex_lock(&bnx2fc_dev_lock);
2637         list_splice(&adapter_list, &to_be_deleted);
2638         INIT_LIST_HEAD(&adapter_list);
2639         adapter_count = 0;
2640         mutex_unlock(&bnx2fc_dev_lock);
2641
2642         /* Unregister with cnic */
2643         list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2644                 list_del_init(&hba->list);
2645                 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2646                        hba);
2647                 bnx2fc_ulp_stop(hba);
2648                 /* unregister cnic device */
2649                 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2650                                        &hba->reg_with_cnic))
2651                         hba->cnic->unregister_device(hba->cnic,
2652                                                          CNIC_ULP_FCOE);
2653                 bnx2fc_hba_destroy(hba);
2654         }
2655         cnic_unregister_driver(CNIC_ULP_FCOE);
2656
2657         /* Destroy global thread */
2658         bg = &bnx2fc_global;
2659         spin_lock_bh(&bg->fcoe_rx_list.lock);
2660         l2_thread = bg->thread;
2661         bg->thread = NULL;
2662         while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2663                 kfree_skb(skb);
2664
2665         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2666
2667         if (l2_thread)
2668                 kthread_stop(l2_thread);
2669
2670         cpu_notifier_register_begin();
2671
2672         /* Destroy per cpu threads */
2673         for_each_online_cpu(cpu) {
2674                 bnx2fc_percpu_thread_destroy(cpu);
2675         }
2676
2677         __unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2678
2679         cpu_notifier_register_done();
2680
2681         destroy_workqueue(bnx2fc_wq);
2682         /*
2683          * detach from scsi transport
2684          * must happen after all destroys are done
2685          */
2686         bnx2fc_release_transport();
2687
2688         /* detach from fcoe transport */
2689         fcoe_transport_detach(&bnx2fc_transport);
2690 }
2691
2692 module_init(bnx2fc_mod_init);
2693 module_exit(bnx2fc_mod_exit);
2694
2695 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2696         .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2697         .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2698         .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2699         .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2700         .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2701         .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2702         .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2703
2704         .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2705         .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2706 };
2707
2708 static struct fc_function_template bnx2fc_transport_function = {
2709         .show_host_node_name = 1,
2710         .show_host_port_name = 1,
2711         .show_host_supported_classes = 1,
2712         .show_host_supported_fc4s = 1,
2713         .show_host_active_fc4s = 1,
2714         .show_host_maxframe_size = 1,
2715
2716         .show_host_port_id = 1,
2717         .show_host_supported_speeds = 1,
2718         .get_host_speed = fc_get_host_speed,
2719         .show_host_speed = 1,
2720         .show_host_port_type = 1,
2721         .get_host_port_state = fc_get_host_port_state,
2722         .show_host_port_state = 1,
2723         .show_host_symbolic_name = 1,
2724
2725         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2726                                 sizeof(struct bnx2fc_rport)),
2727         .show_rport_maxframe_size = 1,
2728         .show_rport_supported_classes = 1,
2729
2730         .show_host_fabric_name = 1,
2731         .show_starget_node_name = 1,
2732         .show_starget_port_name = 1,
2733         .show_starget_port_id = 1,
2734         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2735         .show_rport_dev_loss_tmo = 1,
2736         .get_fc_host_stats = bnx2fc_get_host_stats,
2737
2738         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2739
2740         .terminate_rport_io = fc_rport_terminate_io,
2741
2742         .vport_create = bnx2fc_vport_create,
2743         .vport_delete = bnx2fc_vport_destroy,
2744         .vport_disable = bnx2fc_vport_disable,
2745         .bsg_request = fc_lport_bsg_request,
2746 };
2747
2748 static struct fc_function_template bnx2fc_vport_xport_function = {
2749         .show_host_node_name = 1,
2750         .show_host_port_name = 1,
2751         .show_host_supported_classes = 1,
2752         .show_host_supported_fc4s = 1,
2753         .show_host_active_fc4s = 1,
2754         .show_host_maxframe_size = 1,
2755
2756         .show_host_port_id = 1,
2757         .show_host_supported_speeds = 1,
2758         .get_host_speed = fc_get_host_speed,
2759         .show_host_speed = 1,
2760         .show_host_port_type = 1,
2761         .get_host_port_state = fc_get_host_port_state,
2762         .show_host_port_state = 1,
2763         .show_host_symbolic_name = 1,
2764
2765         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2766                                 sizeof(struct bnx2fc_rport)),
2767         .show_rport_maxframe_size = 1,
2768         .show_rport_supported_classes = 1,
2769
2770         .show_host_fabric_name = 1,
2771         .show_starget_node_name = 1,
2772         .show_starget_port_name = 1,
2773         .show_starget_port_id = 1,
2774         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2775         .show_rport_dev_loss_tmo = 1,
2776         .get_fc_host_stats = fc_get_host_stats,
2777         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2778         .terminate_rport_io = fc_rport_terminate_io,
2779         .bsg_request = fc_lport_bsg_request,
2780 };
2781
2782 /**
2783  * scsi_host_template structure used while registering with SCSI-ml
2784  */
2785 static struct scsi_host_template bnx2fc_shost_template = {
2786         .module                 = THIS_MODULE,
2787         .name                   = "QLogic Offload FCoE Initiator",
2788         .queuecommand           = bnx2fc_queuecommand,
2789         .eh_abort_handler       = bnx2fc_eh_abort,        /* abts */
2790         .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2791         .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2792         .eh_host_reset_handler  = fc_eh_host_reset,
2793         .slave_alloc            = fc_slave_alloc,
2794         .change_queue_depth     = scsi_change_queue_depth,
2795         .this_id                = -1,
2796         .cmd_per_lun            = 3,
2797         .use_clustering         = ENABLE_CLUSTERING,
2798         .sg_tablesize           = BNX2FC_MAX_BDS_PER_CMD,
2799         .max_sectors            = 1024,
2800         .use_blk_tags           = 1,
2801         .track_queue_depth      = 1,
2802 };
2803
2804 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2805         .frame_send             = bnx2fc_xmit,
2806         .elsct_send             = bnx2fc_elsct_send,
2807         .fcp_abort_io           = bnx2fc_abort_io,
2808         .fcp_cleanup            = bnx2fc_cleanup,
2809         .get_lesb               = fcoe_get_lesb,
2810         .rport_event_callback   = bnx2fc_rport_event_handler,
2811 };
2812
2813 /**
2814  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2815  *                      structure carrying callback function pointers
2816  */
2817 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2818         .owner                  = THIS_MODULE,
2819         .cnic_init              = bnx2fc_ulp_init,
2820         .cnic_exit              = bnx2fc_ulp_exit,
2821         .cnic_start             = bnx2fc_ulp_start,
2822         .cnic_stop              = bnx2fc_ulp_stop,
2823         .indicate_kcqes         = bnx2fc_indicate_kcqe,
2824         .indicate_netevent      = bnx2fc_indicate_netevent,
2825         .cnic_get_stats         = bnx2fc_ulp_get_stats,
2826 };