drivers/scsi/bnx2fc/bnx2fc_fcoe.c

   1 /* bnx2fc_fcoe.c: Broadcom NetXtreme II Linux FCoE offload driver.
   2  * This file contains the code that interacts with libfc, libfcoe,
   3  * cnic modules to create FCoE instances, send/receive non-offloaded
   4  * FIP/FCoE packets, listen to link events etc.
   5  *
   6  * Copyright (c) 2008 - 2013 Broadcom Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation.
  11  *
  12  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
  13  */
  14
  15 #include "bnx2fc.h"
  16
  17 static struct list_head adapter_list;
  18 static struct list_head if_list;
  19 static u32 adapter_count;
  20 static DEFINE_MUTEX(bnx2fc_dev_lock);
  21 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
  22
  23 #define DRV_MODULE_NAME         "bnx2fc"
  24 #define DRV_MODULE_VERSION      BNX2FC_VERSION
  25 #define DRV_MODULE_RELDATE      "Sep 17, 2013"
  26
  27
  28 static char version[] =
  29                 "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \
  30                 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
  31
  32
  33 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
  34 MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver");
  35 MODULE_LICENSE("GPL");
  36 MODULE_VERSION(DRV_MODULE_VERSION);
  37
  38 #define BNX2FC_MAX_QUEUE_DEPTH  256
  39 #define BNX2FC_MIN_QUEUE_DEPTH  32
  40 #define FCOE_WORD_TO_BYTE  4
  41
  42 static struct scsi_transport_template   *bnx2fc_transport_template;
  43 static struct scsi_transport_template   *bnx2fc_vport_xport_template;
  44
  45 struct workqueue_struct *bnx2fc_wq;
  46
  47 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
  48  * Here the io threads are per cpu but the l2 thread is just one
  49  */
  50 struct fcoe_percpu_s bnx2fc_global;
  51 DEFINE_SPINLOCK(bnx2fc_global_lock);
  52
  53 static struct cnic_ulp_ops bnx2fc_cnic_cb;
  54 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
  55 static struct scsi_host_template bnx2fc_shost_template;
  56 static struct fc_function_template bnx2fc_transport_function;
  57 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
  58 static struct fc_function_template bnx2fc_vport_xport_function;
  59 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
  60 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
  61 static int bnx2fc_destroy(struct net_device *net_device);
  62 static int bnx2fc_enable(struct net_device *netdev);
  63 static int bnx2fc_disable(struct net_device *netdev);
  64
  65 /* fcoe_syfs control interface handlers */
  66 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
  67 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
  68
  69 static void bnx2fc_recv_frame(struct sk_buff *skb);
  70
  71 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
  72 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
  73 static int bnx2fc_lport_config(struct fc_lport *lport);
  74 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
  75 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
  76 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
  77 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
  78 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
  79 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
  80                                   struct device *parent, int npiv);
  81 static void bnx2fc_destroy_work(struct work_struct *work);
  82
  83 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
  84 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
  85                                                         *phys_dev);
  86 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
  87 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
  88
  89 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
  90 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
  91
  92 static void bnx2fc_port_shutdown(struct fc_lport *lport);
  93 static void bnx2fc_stop(struct bnx2fc_interface *interface);
  94 static int __init bnx2fc_mod_init(void);
  95 static void __exit bnx2fc_mod_exit(void);
  96
  97 unsigned int bnx2fc_debug_level;
  98 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
  99
 100 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
 101                              unsigned long action, void *hcpu);
 102 /* notification function for CPU hotplug events */
 103 static struct notifier_block bnx2fc_cpu_notifier = {
 104         .notifier_call = bnx2fc_cpu_callback,
 105 };
 106
 107 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
 108 {
 109         return ((struct bnx2fc_interface *)
 110                 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
 111 }
 112
 113 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
 114 {
 115         struct fcoe_ctlr_device *ctlr_dev =
 116                 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
 117         struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
 118         struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
 119
 120         fcf_dev->vlan_id = fcoe->vlan_id;
 121 }
 122
 123 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
 124 {
 125         struct fcoe_percpu_s *bg;
 126         struct fcoe_rcv_info *fr;
 127         struct sk_buff_head *list;
 128         struct sk_buff *skb, *next;
 129         struct sk_buff *head;
 130
 131         bg = &bnx2fc_global;
 132         spin_lock_bh(&bg->fcoe_rx_list.lock);
 133         list = &bg->fcoe_rx_list;
 134         head = list->next;
 135         for (skb = head; skb != (struct sk_buff *)list;
 136              skb = next) {
 137                 next = skb->next;
 138                 fr = fcoe_dev_from_skb(skb);
 139                 if (fr->fr_dev == lp) {
 140                         __skb_unlink(skb, list);
 141                         kfree_skb(skb);
 142                 }
 143         }
 144         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 145 }
 146
 147 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 148 {
 149         int rc;
 150         spin_lock(&bnx2fc_global_lock);
 151         rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
 152         spin_unlock(&bnx2fc_global_lock);
 153
 154         return rc;
 155 }
 156
 157 static void bnx2fc_abort_io(struct fc_lport *lport)
 158 {
 159         /*
 160          * This function is no-op for bnx2fc, but we do
 161          * not want to leave it as NULL either, as libfc
 162          * can call the default function which is
 163          * fc_fcp_abort_io.
 164          */
 165 }
 166
 167 static void bnx2fc_cleanup(struct fc_lport *lport)
 168 {
 169         struct fcoe_port *port = lport_priv(lport);
 170         struct bnx2fc_interface *interface = port->priv;
 171         struct bnx2fc_hba *hba = interface->hba;
 172         struct bnx2fc_rport *tgt;
 173         int i;
 174
 175         BNX2FC_MISC_DBG("Entered %s\n", __func__);
 176         mutex_lock(&hba->hba_mutex);
 177         spin_lock_bh(&hba->hba_lock);
 178         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
 179                 tgt = hba->tgt_ofld_list[i];
 180                 if (tgt) {
 181                         /* Cleanup IOs belonging to requested vport */
 182                         if (tgt->port == port) {
 183                                 spin_unlock_bh(&hba->hba_lock);
 184                                 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
 185                                 bnx2fc_flush_active_ios(tgt);
 186                                 spin_lock_bh(&hba->hba_lock);
 187                         }
 188                 }
 189         }
 190         spin_unlock_bh(&hba->hba_lock);
 191         mutex_unlock(&hba->hba_mutex);
 192 }
 193
 194 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
 195                              struct fc_frame *fp)
 196 {
 197         struct fc_rport_priv *rdata = tgt->rdata;
 198         struct fc_frame_header *fh;
 199         int rc = 0;
 200
 201         fh = fc_frame_header_get(fp);
 202         BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
 203                         "r_ctl = 0x%x\n", rdata->ids.port_id,
 204                         ntohs(fh->fh_ox_id), fh->fh_r_ctl);
 205         if ((fh->fh_type == FC_TYPE_ELS) &&
 206             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 207
 208                 switch (fc_frame_payload_op(fp)) {
 209                 case ELS_ADISC:
 210                         rc = bnx2fc_send_adisc(tgt, fp);
 211                         break;
 212                 case ELS_LOGO:
 213                         rc = bnx2fc_send_logo(tgt, fp);
 214                         break;
 215                 case ELS_RLS:
 216                         rc = bnx2fc_send_rls(tgt, fp);
 217                         break;
 218                 default:
 219                         break;
 220                 }
 221         } else if ((fh->fh_type ==  FC_TYPE_BLS) &&
 222             (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
 223                 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
 224         else {
 225                 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
 226                                 "rctl 0x%x thru non-offload path\n",
 227                                 fh->fh_type, fh->fh_r_ctl);
 228                 return -ENODEV;
 229         }
 230         if (rc)
 231                 return -ENOMEM;
 232         else
 233                 return 0;
 234 }
 235
 236 /**
 237  * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
 238  *
 239  * @lport:      the associated local port
 240  * @fp: the fc_frame to be transmitted
 241  */
 242 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
 243 {
 244         struct ethhdr           *eh;
 245         struct fcoe_crc_eof     *cp;
 246         struct sk_buff          *skb;
 247         struct fc_frame_header  *fh;
 248         struct bnx2fc_interface *interface;
 249         struct fcoe_ctlr        *ctlr;
 250         struct bnx2fc_hba *hba;
 251         struct fcoe_port        *port;
 252         struct fcoe_hdr         *hp;
 253         struct bnx2fc_rport     *tgt;
 254         struct fc_stats         *stats;
 255         u8                      sof, eof;
 256         u32                     crc;
 257         unsigned int            hlen, tlen, elen;
 258         int                     wlen, rc = 0;
 259
 260         port = (struct fcoe_port *)lport_priv(lport);
 261         interface = port->priv;
 262         ctlr = bnx2fc_to_ctlr(interface);
 263         hba = interface->hba;
 264
 265         fh = fc_frame_header_get(fp);
 266
 267         skb = fp_skb(fp);
 268         if (!lport->link_up) {
 269                 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
 270                 kfree_skb(skb);
 271                 return 0;
 272         }
 273
 274         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 275                 if (!ctlr->sel_fcf) {
 276                         BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
 277                         kfree_skb(skb);
 278                         return -EINVAL;
 279                 }
 280                 if (fcoe_ctlr_els_send(ctlr, lport, skb))
 281                         return 0;
 282         }
 283
 284         sof = fr_sof(fp);
 285         eof = fr_eof(fp);
 286
 287         /*
 288          * Snoop the frame header to check if the frame is for
 289          * an offloaded session
 290          */
 291         /*
 292          * tgt_ofld_list access is synchronized using
 293          * both hba mutex and hba lock. Atleast hba mutex or
 294          * hba lock needs to be held for read access.
 295          */
 296
 297         spin_lock_bh(&hba->hba_lock);
 298         tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
 299         if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
 300                 /* This frame is for offloaded session */
 301                 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
 302                                 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
 303                 spin_unlock_bh(&hba->hba_lock);
 304                 rc = bnx2fc_xmit_l2_frame(tgt, fp);
 305                 if (rc != -ENODEV) {
 306                         kfree_skb(skb);
 307                         return rc;
 308                 }
 309         } else {
 310                 spin_unlock_bh(&hba->hba_lock);
 311         }
 312
 313         elen = sizeof(struct ethhdr);
 314         hlen = sizeof(struct fcoe_hdr);
 315         tlen = sizeof(struct fcoe_crc_eof);
 316         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 317
 318         skb->ip_summed = CHECKSUM_NONE;
 319         crc = fcoe_fc_crc(fp);
 320
 321         /* copy port crc and eof to the skb buff */
 322         if (skb_is_nonlinear(skb)) {
 323                 skb_frag_t *frag;
 324                 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
 325                         kfree_skb(skb);
 326                         return -ENOMEM;
 327                 }
 328                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
 329                 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
 330         } else {
 331                 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
 332         }
 333
 334         memset(cp, 0, sizeof(*cp));
 335         cp->fcoe_eof = eof;
 336         cp->fcoe_crc32 = cpu_to_le32(~crc);
 337         if (skb_is_nonlinear(skb)) {
 338                 kunmap_atomic(cp);
 339                 cp = NULL;
 340         }
 341
 342         /* adjust skb network/transport offsets to match mac/fcoe/port */
 343         skb_push(skb, elen + hlen);
 344         skb_reset_mac_header(skb);
 345         skb_reset_network_header(skb);
 346         skb->mac_len = elen;
 347         skb->protocol = htons(ETH_P_FCOE);
 348         skb->dev = interface->netdev;
 349
 350         /* fill up mac and fcoe headers */
 351         eh = eth_hdr(skb);
 352         eh->h_proto = htons(ETH_P_FCOE);
 353         if (ctlr->map_dest)
 354                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
 355         else
 356                 /* insert GW address */
 357                 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
 358
 359         if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
 360                 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
 361         else
 362                 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
 363
 364         hp = (struct fcoe_hdr *)(eh + 1);
 365         memset(hp, 0, sizeof(*hp));
 366         if (FC_FCOE_VER)
 367                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
 368         hp->fcoe_sof = sof;
 369
 370         /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
 371         if (lport->seq_offload && fr_max_payload(fp)) {
 372                 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
 373                 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
 374         } else {
 375                 skb_shinfo(skb)->gso_type = 0;
 376                 skb_shinfo(skb)->gso_size = 0;
 377         }
 378
 379         /*update tx stats */
 380         stats = per_cpu_ptr(lport->stats, get_cpu());
 381         stats->TxFrames++;
 382         stats->TxWords += wlen;
 383         put_cpu();
 384
 385         /* send down to lld */
 386         fr_dev(fp) = lport;
 387         if (port->fcoe_pending_queue.qlen)
 388                 fcoe_check_wait_queue(lport, skb);
 389         else if (fcoe_start_io(skb))
 390                 fcoe_check_wait_queue(lport, skb);
 391
 392         return 0;
 393 }
 394
 395 /**
 396  * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
 397  *
 398  * @skb:        the receive socket buffer
 399  * @dev:        associated net device
 400  * @ptype:      context
 401  * @olddev:     last device
 402  *
 403  * This function receives the packet and builds FC frame and passes it up
 404  */
 405 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
 406                 struct packet_type *ptype, struct net_device *olddev)
 407 {
 408         struct fc_lport *lport;
 409         struct bnx2fc_interface *interface;
 410         struct fcoe_ctlr *ctlr;
 411         struct fc_frame_header *fh;
 412         struct fcoe_rcv_info *fr;
 413         struct fcoe_percpu_s *bg;
 414         unsigned short oxid;
 415
 416         interface = container_of(ptype, struct bnx2fc_interface,
 417                                  fcoe_packet_type);
 418         ctlr = bnx2fc_to_ctlr(interface);
 419         lport = ctlr->lp;
 420
 421         if (unlikely(lport == NULL)) {
 422                 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
 423                 goto err;
 424         }
 425
 426         if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
 427                 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
 428                 goto err;
 429         }
 430
 431         /*
 432          * Check for minimum frame length, and make sure required FCoE
 433          * and FC headers are pulled into the linear data area.
 434          */
 435         if (unlikely((skb->len < FCOE_MIN_FRAME) ||
 436             !pskb_may_pull(skb, FCOE_HEADER_LEN)))
 437                 goto err;
 438
 439         skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
 440         fh = (struct fc_frame_header *) skb_transport_header(skb);
 441
 442         oxid = ntohs(fh->fh_ox_id);
 443
 444         fr = fcoe_dev_from_skb(skb);
 445         fr->fr_dev = lport;
 446
 447         bg = &bnx2fc_global;
 448         spin_lock(&bg->fcoe_rx_list.lock);
 449
 450         __skb_queue_tail(&bg->fcoe_rx_list, skb);
 451         if (bg->fcoe_rx_list.qlen == 1)
 452                 wake_up_process(bg->thread);
 453
 454         spin_unlock(&bg->fcoe_rx_list.lock);
 455
 456         return 0;
 457 err:
 458         kfree_skb(skb);
 459         return -1;
 460 }
 461
 462 static int bnx2fc_l2_rcv_thread(void *arg)
 463 {
 464         struct fcoe_percpu_s *bg = arg;
 465         struct sk_buff *skb;
 466
 467         set_user_nice(current, -20);
 468         set_current_state(TASK_INTERRUPTIBLE);
 469         while (!kthread_should_stop()) {
 470                 schedule();
 471                 spin_lock_bh(&bg->fcoe_rx_list.lock);
 472                 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
 473                         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 474                         bnx2fc_recv_frame(skb);
 475                         spin_lock_bh(&bg->fcoe_rx_list.lock);
 476                 }
 477                 __set_current_state(TASK_INTERRUPTIBLE);
 478                 spin_unlock_bh(&bg->fcoe_rx_list.lock);
 479         }
 480         __set_current_state(TASK_RUNNING);
 481         return 0;
 482 }
 483
 484
 485 static void bnx2fc_recv_frame(struct sk_buff *skb)
 486 {
 487         u32 fr_len;
 488         struct fc_lport *lport;
 489         struct fcoe_rcv_info *fr;
 490         struct fc_stats *stats;
 491         struct fc_frame_header *fh;
 492         struct fcoe_crc_eof crc_eof;
 493         struct fc_frame *fp;
 494         struct fc_lport *vn_port;
 495         struct fcoe_port *port;
 496         u8 *mac = NULL;
 497         u8 *dest_mac = NULL;
 498         struct fcoe_hdr *hp;
 499
 500         fr = fcoe_dev_from_skb(skb);
 501         lport = fr->fr_dev;
 502         if (unlikely(lport == NULL)) {
 503                 printk(KERN_ERR PFX "Invalid lport struct\n");
 504                 kfree_skb(skb);
 505                 return;
 506         }
 507
 508         if (skb_is_nonlinear(skb))
 509                 skb_linearize(skb);
 510         mac = eth_hdr(skb)->h_source;
 511         dest_mac = eth_hdr(skb)->h_dest;
 512
 513         /* Pull the header */
 514         hp = (struct fcoe_hdr *) skb_network_header(skb);
 515         fh = (struct fc_frame_header *) skb_transport_header(skb);
 516         skb_pull(skb, sizeof(struct fcoe_hdr));
 517         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
 518
 519         stats = per_cpu_ptr(lport->stats, get_cpu());
 520         stats->RxFrames++;
 521         stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
 522
 523         fp = (struct fc_frame *)skb;
 524         fc_frame_init(fp);
 525         fr_dev(fp) = lport;
 526         fr_sof(fp) = hp->fcoe_sof;
 527         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
 528                 put_cpu();
 529                 kfree_skb(skb);
 530                 return;
 531         }
 532         fr_eof(fp) = crc_eof.fcoe_eof;
 533         fr_crc(fp) = crc_eof.fcoe_crc32;
 534         if (pskb_trim(skb, fr_len)) {
 535                 put_cpu();
 536                 kfree_skb(skb);
 537                 return;
 538         }
 539
 540         fh = fc_frame_header_get(fp);
 541
 542         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
 543         if (vn_port) {
 544                 port = lport_priv(vn_port);
 545                 if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
 546                         BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
 547                         put_cpu();
 548                         kfree_skb(skb);
 549                         return;
 550                 }
 551         }
 552         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
 553             fh->fh_type == FC_TYPE_FCP) {
 554                 /* Drop FCP data. We dont this in L2 path */
 555                 put_cpu();
 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                                 put_cpu();
 566                                 kfree_skb(skb);
 567                                 return;
 568                         }
 569                         break;
 570                 }
 571         }
 572
 573         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
 574                 /* Drop incoming ABTS */
 575                 put_cpu();
 576                 kfree_skb(skb);
 577                 return;
 578         }
 579
 580         if (le32_to_cpu(fr_crc(fp)) !=
 581                         ~crc32(~0, skb->data, fr_len)) {
 582                 if (stats->InvalidCRCCount < 5)
 583                         printk(KERN_WARNING PFX "dropping frame with "
 584                                "CRC error\n");
 585                 stats->InvalidCRCCount++;
 586                 put_cpu();
 587                 kfree_skb(skb);
 588                 return;
 589         }
 590         put_cpu();
 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, -20);
 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 (Broadcom %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                 return;
 854
 855         default:
 856                 printk(KERN_ERR PFX "Unknown netevent %ld", event);
 857                 return;
 858         }
 859
 860         mutex_lock(&bnx2fc_dev_lock);
 861         list_for_each_entry(interface, &if_list, list) {
 862
 863                 if (interface->hba != hba)
 864                         continue;
 865
 866                 ctlr = bnx2fc_to_ctlr(interface);
 867                 lport = ctlr->lp;
 868                 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
 869                                 interface->netdev->name, event);
 870
 871                 fcoe_link_speed_update(lport);
 872
 873                 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
 874
 875                 if (link_possible && !bnx2fc_link_ok(lport)) {
 876                         switch (cdev->enabled) {
 877                         case FCOE_CTLR_DISABLED:
 878                                 pr_info("Link up while interface is disabled.\n");
 879                                 break;
 880                         case FCOE_CTLR_ENABLED:
 881                         case FCOE_CTLR_UNUSED:
 882                                 /* Reset max recv frame size to default */
 883                                 fc_set_mfs(lport, BNX2FC_MFS);
 884                                 /*
 885                                  * ctlr link up will only be handled during
 886                                  * enable to avoid sending discovery
 887                                  * solicitation on a stale vlan
 888                                  */
 889                                 if (interface->enabled)
 890                                         fcoe_ctlr_link_up(ctlr);
 891                         };
 892                 } else if (fcoe_ctlr_link_down(ctlr)) {
 893                         switch (cdev->enabled) {
 894                         case FCOE_CTLR_DISABLED:
 895                                 pr_info("Link down while interface is disabled.\n");
 896                                 break;
 897                         case FCOE_CTLR_ENABLED:
 898                         case FCOE_CTLR_UNUSED:
 899                                 mutex_lock(&lport->lp_mutex);
 900                                 list_for_each_entry(vport, &lport->vports, list)
 901                                         fc_host_port_type(vport->host) =
 902                                         FC_PORTTYPE_UNKNOWN;
 903                                 mutex_unlock(&lport->lp_mutex);
 904                                 fc_host_port_type(lport->host) =
 905                                         FC_PORTTYPE_UNKNOWN;
 906                                 per_cpu_ptr(lport->stats,
 907                                             get_cpu())->LinkFailureCount++;
 908                                 put_cpu();
 909                                 fcoe_clean_pending_queue(lport);
 910                                 wait_for_upload = 1;
 911                         };
 912                 }
 913         }
 914         mutex_unlock(&bnx2fc_dev_lock);
 915
 916         if (wait_for_upload) {
 917                 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
 918                 init_waitqueue_head(&hba->shutdown_wait);
 919                 BNX2FC_MISC_DBG("indicate_netevent "
 920                                 "num_ofld_sess = %d\n",
 921                                 hba->num_ofld_sess);
 922                 hba->wait_for_link_down = 1;
 923                 wait_event_interruptible(hba->shutdown_wait,
 924                                          (hba->num_ofld_sess == 0));
 925                 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
 926                                 hba->num_ofld_sess);
 927                 hba->wait_for_link_down = 0;
 928
 929                 if (signal_pending(current))
 930                         flush_signals(current);
 931         }
 932 }
 933
 934 static int bnx2fc_libfc_config(struct fc_lport *lport)
 935 {
 936
 937         /* Set the function pointers set by bnx2fc driver */
 938         memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
 939                 sizeof(struct libfc_function_template));
 940         fc_elsct_init(lport);
 941         fc_exch_init(lport);
 942         fc_rport_init(lport);
 943         fc_disc_init(lport);
 944         fc_disc_config(lport, lport);
 945         return 0;
 946 }
 947
 948 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
 949 {
 950         int fcoe_min_xid, fcoe_max_xid;
 951
 952         fcoe_min_xid = hba->max_xid + 1;
 953         if (nr_cpu_ids <= 2)
 954                 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
 955         else
 956                 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
 957         if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
 958                                fcoe_max_xid, NULL)) {
 959                 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
 960                 return -ENOMEM;
 961         }
 962
 963         return 0;
 964 }
 965
 966 static int bnx2fc_lport_config(struct fc_lport *lport)
 967 {
 968         lport->link_up = 0;
 969         lport->qfull = 0;
 970         lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
 971         lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
 972         lport->e_d_tov = 2 * 1000;
 973         lport->r_a_tov = 10 * 1000;
 974
 975         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
 976                                 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
 977         lport->does_npiv = 1;
 978
 979         memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
 980         lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
 981
 982         /* alloc stats structure */
 983         if (fc_lport_init_stats(lport))
 984                 return -ENOMEM;
 985
 986         /* Finish fc_lport configuration */
 987         fc_lport_config(lport);
 988
 989         return 0;
 990 }
 991
 992 /**
 993  * bnx2fc_fip_recv - handle a received FIP frame.
 994  *
 995  * @skb: the received skb
 996  * @dev: associated &net_device
 997  * @ptype: the &packet_type structure which was used to register this handler.
 998  * @orig_dev: original receive &net_device, in case @ dev is a bond.
 999  *
1000  * Returns: 0 for success
1001  */
1002 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1003                            struct packet_type *ptype,
1004                            struct net_device *orig_dev)
1005 {
1006         struct bnx2fc_interface *interface;
1007         struct fcoe_ctlr *ctlr;
1008         interface = container_of(ptype, struct bnx2fc_interface,
1009                                  fip_packet_type);
1010         ctlr = bnx2fc_to_ctlr(interface);
1011         fcoe_ctlr_recv(ctlr, skb);
1012         return 0;
1013 }
1014
1015 /**
1016  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1017  *
1018  * @fip: FCoE controller.
1019  * @old: Unicast MAC address to delete if the MAC is non-zero.
1020  * @new: Unicast MAC address to add.
1021  *
1022  * Remove any previously-set unicast MAC filter.
1023  * Add secondary FCoE MAC address filter for our OUI.
1024  */
1025 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1026 {
1027         struct fcoe_port *port = lport_priv(lport);
1028
1029         memcpy(port->data_src_addr, addr, ETH_ALEN);
1030 }
1031
1032 /**
1033  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1034  *
1035  * @lport: libfc port
1036  */
1037 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1038 {
1039         struct fcoe_port *port;
1040
1041         port = (struct fcoe_port *)lport_priv(lport);
1042         return port->data_src_addr;
1043 }
1044
1045 /**
1046  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1047  *
1048  * @fip: FCoE controller.
1049  * @skb: FIP Packet.
1050  */
1051 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1052 {
1053         skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1054         dev_queue_xmit(skb);
1055 }
1056
1057 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1058 {
1059         struct Scsi_Host *shost = vport_to_shost(vport);
1060         struct fc_lport *n_port = shost_priv(shost);
1061         struct fcoe_port *port = lport_priv(n_port);
1062         struct bnx2fc_interface *interface = port->priv;
1063         struct net_device *netdev = interface->netdev;
1064         struct fc_lport *vn_port;
1065         int rc;
1066         char buf[32];
1067
1068         rc = fcoe_validate_vport_create(vport);
1069         if (rc) {
1070                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1071                 printk(KERN_ERR PFX "Failed to create vport, "
1072                        "WWPN (0x%s) already exists\n",
1073                        buf);
1074                 return rc;
1075         }
1076
1077         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1078                 printk(KERN_ERR PFX "vn ports cannot be created on"
1079                         "this interface\n");
1080                 return -EIO;
1081         }
1082         rtnl_lock();
1083         mutex_lock(&bnx2fc_dev_lock);
1084         vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1085         mutex_unlock(&bnx2fc_dev_lock);
1086         rtnl_unlock();
1087
1088         if (IS_ERR(vn_port)) {
1089                 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1090                         netdev->name);
1091                 return -EIO;
1092         }
1093
1094         if (disabled) {
1095                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1096         } else {
1097                 vn_port->boot_time = jiffies;
1098                 fc_lport_init(vn_port);
1099                 fc_fabric_login(vn_port);
1100                 fc_vport_setlink(vn_port);
1101         }
1102         return 0;
1103 }
1104
1105 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1106 {
1107         struct bnx2fc_lport *blport, *tmp;
1108
1109         spin_lock_bh(&hba->hba_lock);
1110         list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1111                 if (blport->lport == lport) {
1112                         list_del(&blport->list);
1113                         kfree(blport);
1114                 }
1115         }
1116         spin_unlock_bh(&hba->hba_lock);
1117 }
1118
1119 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1120 {
1121         struct Scsi_Host *shost = vport_to_shost(vport);
1122         struct fc_lport *n_port = shost_priv(shost);
1123         struct fc_lport *vn_port = vport->dd_data;
1124         struct fcoe_port *port = lport_priv(vn_port);
1125         struct bnx2fc_interface *interface = port->priv;
1126         struct fc_lport *v_port;
1127         bool found = false;
1128
1129         mutex_lock(&n_port->lp_mutex);
1130         list_for_each_entry(v_port, &n_port->vports, list)
1131                 if (v_port->vport == vport) {
1132                         found = true;
1133                         break;
1134                 }
1135
1136         if (!found) {
1137                 mutex_unlock(&n_port->lp_mutex);
1138                 return -ENOENT;
1139         }
1140         list_del(&vn_port->list);
1141         mutex_unlock(&n_port->lp_mutex);
1142         bnx2fc_free_vport(interface->hba, port->lport);
1143         bnx2fc_port_shutdown(port->lport);
1144         bnx2fc_interface_put(interface);
1145         queue_work(bnx2fc_wq, &port->destroy_work);
1146         return 0;
1147 }
1148
1149 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1150 {
1151         struct fc_lport *lport = vport->dd_data;
1152
1153         if (disable) {
1154                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1155                 fc_fabric_logoff(lport);
1156         } else {
1157                 lport->boot_time = jiffies;
1158                 fc_fabric_login(lport);
1159                 fc_vport_setlink(lport);
1160         }
1161         return 0;
1162 }
1163
1164
1165 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1166 {
1167         struct net_device *netdev = interface->netdev;
1168         struct net_device *physdev = interface->hba->phys_dev;
1169         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1170         struct netdev_hw_addr *ha;
1171         int sel_san_mac = 0;
1172
1173         /* setup Source MAC Address */
1174         rcu_read_lock();
1175         for_each_dev_addr(physdev, ha) {
1176                 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1177                                 ha->type);
1178                 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1179                                 ha->addr[1], ha->addr[2], ha->addr[3],
1180                                 ha->addr[4], ha->addr[5]);
1181
1182                 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1183                     (is_valid_ether_addr(ha->addr))) {
1184                         memcpy(ctlr->ctl_src_addr, ha->addr,
1185                                ETH_ALEN);
1186                         sel_san_mac = 1;
1187                         BNX2FC_MISC_DBG("Found SAN MAC\n");
1188                 }
1189         }
1190         rcu_read_unlock();
1191
1192         if (!sel_san_mac)
1193                 return -ENODEV;
1194
1195         interface->fip_packet_type.func = bnx2fc_fip_recv;
1196         interface->fip_packet_type.type = htons(ETH_P_FIP);
1197         interface->fip_packet_type.dev = netdev;
1198         dev_add_pack(&interface->fip_packet_type);
1199
1200         interface->fcoe_packet_type.func = bnx2fc_rcv;
1201         interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1202         interface->fcoe_packet_type.dev = netdev;
1203         dev_add_pack(&interface->fcoe_packet_type);
1204
1205         return 0;
1206 }
1207
1208 static int bnx2fc_attach_transport(void)
1209 {
1210         bnx2fc_transport_template =
1211                 fc_attach_transport(&bnx2fc_transport_function);
1212
1213         if (bnx2fc_transport_template == NULL) {
1214                 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1215                 return -ENODEV;
1216         }
1217
1218         bnx2fc_vport_xport_template =
1219                 fc_attach_transport(&bnx2fc_vport_xport_function);
1220         if (bnx2fc_vport_xport_template == NULL) {
1221                 printk(KERN_ERR PFX
1222                        "Failed to attach FC transport for vport\n");
1223                 fc_release_transport(bnx2fc_transport_template);
1224                 bnx2fc_transport_template = NULL;
1225                 return -ENODEV;
1226         }
1227         return 0;
1228 }
1229 static void bnx2fc_release_transport(void)
1230 {
1231         fc_release_transport(bnx2fc_transport_template);
1232         fc_release_transport(bnx2fc_vport_xport_template);
1233         bnx2fc_transport_template = NULL;
1234         bnx2fc_vport_xport_template = NULL;
1235 }
1236
1237 static void bnx2fc_interface_release(struct kref *kref)
1238 {
1239         struct fcoe_ctlr_device *ctlr_dev;
1240         struct bnx2fc_interface *interface;
1241         struct fcoe_ctlr *ctlr;
1242         struct net_device *netdev;
1243
1244         interface = container_of(kref, struct bnx2fc_interface, kref);
1245         BNX2FC_MISC_DBG("Interface is being released\n");
1246
1247         ctlr = bnx2fc_to_ctlr(interface);
1248         ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1249         netdev = interface->netdev;
1250
1251         /* tear-down FIP controller */
1252         if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1253                 fcoe_ctlr_destroy(ctlr);
1254
1255         fcoe_ctlr_device_delete(ctlr_dev);
1256
1257         dev_put(netdev);
1258         module_put(THIS_MODULE);
1259 }
1260
1261 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1262 {
1263         kref_get(&interface->kref);
1264 }
1265
1266 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1267 {
1268         kref_put(&interface->kref, bnx2fc_interface_release);
1269 }
1270 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1271 {
1272         /* Free the command manager */
1273         if (hba->cmd_mgr) {
1274                 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1275                 hba->cmd_mgr = NULL;
1276         }
1277         kfree(hba->tgt_ofld_list);
1278         bnx2fc_unbind_pcidev(hba);
1279         kfree(hba);
1280 }
1281
1282 /**
1283  * bnx2fc_hba_create - create a new bnx2fc hba
1284  *
1285  * @cnic:       pointer to cnic device
1286  *
1287  * Creates a new FCoE hba on the given device.
1288  *
1289  */
1290 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1291 {
1292         struct bnx2fc_hba *hba;
1293         struct fcoe_capabilities *fcoe_cap;
1294         int rc;
1295
1296         hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1297         if (!hba) {
1298                 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1299                 return NULL;
1300         }
1301         spin_lock_init(&hba->hba_lock);
1302         mutex_init(&hba->hba_mutex);
1303
1304         hba->cnic = cnic;
1305
1306         hba->max_tasks = cnic->max_fcoe_exchanges;
1307         hba->elstm_xids = (hba->max_tasks / 2);
1308         hba->max_outstanding_cmds = hba->elstm_xids;
1309         hba->max_xid = (hba->max_tasks - 1);
1310
1311         rc = bnx2fc_bind_pcidev(hba);
1312         if (rc) {
1313                 printk(KERN_ERR PFX "create_adapter:  bind error\n");
1314                 goto bind_err;
1315         }
1316         hba->phys_dev = cnic->netdev;
1317         hba->next_conn_id = 0;
1318
1319         hba->tgt_ofld_list =
1320                 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1321                         GFP_KERNEL);
1322         if (!hba->tgt_ofld_list) {
1323                 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1324                 goto tgtofld_err;
1325         }
1326
1327         hba->num_ofld_sess = 0;
1328
1329         hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1330         if (!hba->cmd_mgr) {
1331                 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1332                 goto cmgr_err;
1333         }
1334         fcoe_cap = &hba->fcoe_cap;
1335
1336         fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1337                                         FCOE_IOS_PER_CONNECTION_SHIFT;
1338         fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1339                                         FCOE_LOGINS_PER_PORT_SHIFT;
1340         fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1341                                         FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1342         fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1343                                         FCOE_NPIV_WWN_PER_PORT_SHIFT;
1344         fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1345                                         FCOE_TARGETS_SUPPORTED_SHIFT;
1346         fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1347                                         FCOE_OUTSTANDING_COMMANDS_SHIFT;
1348         fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1349
1350         init_waitqueue_head(&hba->shutdown_wait);
1351         init_waitqueue_head(&hba->destroy_wait);
1352         INIT_LIST_HEAD(&hba->vports);
1353
1354         return hba;
1355
1356 cmgr_err:
1357         kfree(hba->tgt_ofld_list);
1358 tgtofld_err:
1359         bnx2fc_unbind_pcidev(hba);
1360 bind_err:
1361         kfree(hba);
1362         return NULL;
1363 }
1364
1365 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1366                                       struct net_device *netdev,
1367                                       enum fip_state fip_mode)
1368 {
1369         struct fcoe_ctlr_device *ctlr_dev;
1370         struct bnx2fc_interface *interface;
1371         struct fcoe_ctlr *ctlr;
1372         int size;
1373         int rc = 0;
1374
1375         size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1376         ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1377                                          size);
1378         if (!ctlr_dev) {
1379                 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1380                 return NULL;
1381         }
1382         ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1383         ctlr->cdev = ctlr_dev;
1384         interface = fcoe_ctlr_priv(ctlr);
1385         dev_hold(netdev);
1386         kref_init(&interface->kref);
1387         interface->hba = hba;
1388         interface->netdev = netdev;
1389
1390         /* Initialize FIP */
1391         fcoe_ctlr_init(ctlr, fip_mode);
1392         ctlr->send = bnx2fc_fip_send;
1393         ctlr->update_mac = bnx2fc_update_src_mac;
1394         ctlr->get_src_addr = bnx2fc_get_src_mac;
1395         set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1396
1397         rc = bnx2fc_interface_setup(interface);
1398         if (!rc)
1399                 return interface;
1400
1401         fcoe_ctlr_destroy(ctlr);
1402         dev_put(netdev);
1403         fcoe_ctlr_device_delete(ctlr_dev);
1404         return NULL;
1405 }
1406
1407 /**
1408  * bnx2fc_if_create - Create FCoE instance on a given interface
1409  *
1410  * @interface:  FCoE interface to create a local port on
1411  * @parent:     Device pointer to be the parent in sysfs for the SCSI host
1412  * @npiv:       Indicates if the port is vport or not
1413  *
1414  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1415  *
1416  * Returns:     Allocated fc_lport or an error pointer
1417  */
1418 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1419                                   struct device *parent, int npiv)
1420 {
1421         struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1422         struct fc_lport         *lport, *n_port;
1423         struct fcoe_port        *port;
1424         struct Scsi_Host        *shost;
1425         struct fc_vport         *vport = dev_to_vport(parent);
1426         struct bnx2fc_lport     *blport;
1427         struct bnx2fc_hba       *hba = interface->hba;
1428         int                     rc = 0;
1429
1430         blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1431         if (!blport) {
1432                 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1433                 return NULL;
1434         }
1435
1436         /* Allocate Scsi_Host structure */
1437         bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1438         if (!npiv)
1439                 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1440         else
1441                 lport = libfc_vport_create(vport, sizeof(*port));
1442
1443         if (!lport) {
1444                 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1445                 goto free_blport;
1446         }
1447         shost = lport->host;
1448         port = lport_priv(lport);
1449         port->lport = lport;
1450         port->priv = interface;
1451         port->get_netdev = bnx2fc_netdev;
1452         INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1453
1454         /* Configure fcoe_port */
1455         rc = bnx2fc_lport_config(lport);
1456         if (rc)
1457                 goto lp_config_err;
1458
1459         if (npiv) {
1460                 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1461                         vport->node_name, vport->port_name);
1462                 fc_set_wwnn(lport, vport->node_name);
1463                 fc_set_wwpn(lport, vport->port_name);
1464         }
1465         /* Configure netdev and networking properties of the lport */
1466         rc = bnx2fc_net_config(lport, interface->netdev);
1467         if (rc) {
1468                 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1469                 goto lp_config_err;
1470         }
1471
1472         rc = bnx2fc_shost_config(lport, parent);
1473         if (rc) {
1474                 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1475                         interface->netdev->name);
1476                 goto lp_config_err;
1477         }
1478
1479         /* Initialize the libfc library */
1480         rc = bnx2fc_libfc_config(lport);
1481         if (rc) {
1482                 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1483                 goto shost_err;
1484         }
1485         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1486
1487         /* Allocate exchange manager */
1488         if (!npiv)
1489                 rc = bnx2fc_em_config(lport, hba);
1490         else {
1491                 shost = vport_to_shost(vport);
1492                 n_port = shost_priv(shost);
1493                 rc = fc_exch_mgr_list_clone(n_port, lport);
1494         }
1495
1496         if (rc) {
1497                 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1498                 goto shost_err;
1499         }
1500
1501         bnx2fc_interface_get(interface);
1502
1503         spin_lock_bh(&hba->hba_lock);
1504         blport->lport = lport;
1505         list_add_tail(&blport->list, &hba->vports);
1506         spin_unlock_bh(&hba->hba_lock);
1507
1508         return lport;
1509
1510 shost_err:
1511         scsi_remove_host(shost);
1512 lp_config_err:
1513         scsi_host_put(lport->host);
1514 free_blport:
1515         kfree(blport);
1516         return NULL;
1517 }
1518
1519 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1520 {
1521         /* Dont listen for Ethernet packets anymore */
1522         __dev_remove_pack(&interface->fcoe_packet_type);
1523         __dev_remove_pack(&interface->fip_packet_type);
1524         synchronize_net();
1525 }
1526
1527 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1528 {
1529         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1530         struct fc_lport *lport = ctlr->lp;
1531         struct fcoe_port *port = lport_priv(lport);
1532         struct bnx2fc_hba *hba = interface->hba;
1533
1534         /* Stop the transmit retry timer */
1535         del_timer_sync(&port->timer);
1536
1537         /* Free existing transmit skbs */
1538         fcoe_clean_pending_queue(lport);
1539
1540         bnx2fc_net_cleanup(interface);
1541
1542         bnx2fc_free_vport(hba, lport);
1543 }
1544
1545 static void bnx2fc_if_destroy(struct fc_lport *lport)
1546 {
1547
1548         /* Free queued packets for the receive thread */
1549         bnx2fc_clean_rx_queue(lport);
1550
1551         /* Detach from scsi-ml */
1552         fc_remove_host(lport->host);
1553         scsi_remove_host(lport->host);
1554
1555         /*
1556          * Note that only the physical lport will have the exchange manager.
1557          * for vports, this function is NOP
1558          */
1559         fc_exch_mgr_free(lport);
1560
1561         /* Free memory used by statistical counters */
1562         fc_lport_free_stats(lport);
1563
1564         /* Release Scsi_Host */
1565         scsi_host_put(lport->host);
1566 }
1567
1568 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1569 {
1570         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1571         struct fc_lport *lport = ctlr->lp;
1572         struct fcoe_port *port = lport_priv(lport);
1573
1574         bnx2fc_interface_cleanup(interface);
1575         bnx2fc_stop(interface);
1576         list_del(&interface->list);
1577         bnx2fc_interface_put(interface);
1578         queue_work(bnx2fc_wq, &port->destroy_work);
1579 }
1580
1581 /**
1582  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1583  *
1584  * @buffer: The name of the Ethernet interface to be destroyed
1585  * @kp:     The associated kernel parameter
1586  *
1587  * Called from sysfs.
1588  *
1589  * Returns: 0 for success
1590  */
1591 static int bnx2fc_destroy(struct net_device *netdev)
1592 {
1593         struct bnx2fc_interface *interface = NULL;
1594         struct workqueue_struct *timer_work_queue;
1595         struct fcoe_ctlr *ctlr;
1596         int rc = 0;
1597
1598         rtnl_lock();
1599         mutex_lock(&bnx2fc_dev_lock);
1600
1601         interface = bnx2fc_interface_lookup(netdev);
1602         ctlr = bnx2fc_to_ctlr(interface);
1603         if (!interface || !ctlr->lp) {
1604                 rc = -ENODEV;
1605                 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1606                 goto netdev_err;
1607         }
1608
1609         timer_work_queue = interface->timer_work_queue;
1610         __bnx2fc_destroy(interface);
1611         destroy_workqueue(timer_work_queue);
1612
1613 netdev_err:
1614         mutex_unlock(&bnx2fc_dev_lock);
1615         rtnl_unlock();
1616         return rc;
1617 }
1618
1619 static void bnx2fc_destroy_work(struct work_struct *work)
1620 {
1621         struct fcoe_port *port;
1622         struct fc_lport *lport;
1623
1624         port = container_of(work, struct fcoe_port, destroy_work);
1625         lport = port->lport;
1626
1627         BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1628
1629         bnx2fc_if_destroy(lport);
1630 }
1631
1632 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1633 {
1634         bnx2fc_free_fw_resc(hba);
1635         bnx2fc_free_task_ctx(hba);
1636 }
1637
1638 /**
1639  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1640  *                      pci structure
1641  *
1642  * @hba:                Adapter instance
1643  */
1644 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1645 {
1646         if (bnx2fc_setup_task_ctx(hba))
1647                 goto mem_err;
1648
1649         if (bnx2fc_setup_fw_resc(hba))
1650                 goto mem_err;
1651
1652         return 0;
1653 mem_err:
1654         bnx2fc_unbind_adapter_devices(hba);
1655         return -ENOMEM;
1656 }
1657
1658 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1659 {
1660         struct cnic_dev *cnic;
1661         struct pci_dev *pdev;
1662
1663         if (!hba->cnic) {
1664                 printk(KERN_ERR PFX "cnic is NULL\n");
1665                 return -ENODEV;
1666         }
1667         cnic = hba->cnic;
1668         pdev = hba->pcidev = cnic->pcidev;
1669         if (!hba->pcidev)
1670                 return -ENODEV;
1671
1672         switch (pdev->device) {
1673         case PCI_DEVICE_ID_NX2_57710:
1674                 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1675                 break;
1676         case PCI_DEVICE_ID_NX2_57711:
1677                 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1678                 break;
1679         case PCI_DEVICE_ID_NX2_57712:
1680         case PCI_DEVICE_ID_NX2_57712_MF:
1681         case PCI_DEVICE_ID_NX2_57712_VF:
1682                 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1683                 break;
1684         case PCI_DEVICE_ID_NX2_57800:
1685         case PCI_DEVICE_ID_NX2_57800_MF:
1686         case PCI_DEVICE_ID_NX2_57800_VF:
1687                 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1688                 break;
1689         case PCI_DEVICE_ID_NX2_57810:
1690         case PCI_DEVICE_ID_NX2_57810_MF:
1691         case PCI_DEVICE_ID_NX2_57810_VF:
1692                 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1693                 break;
1694         case PCI_DEVICE_ID_NX2_57840:
1695         case PCI_DEVICE_ID_NX2_57840_MF:
1696         case PCI_DEVICE_ID_NX2_57840_VF:
1697         case PCI_DEVICE_ID_NX2_57840_2_20:
1698         case PCI_DEVICE_ID_NX2_57840_4_10:
1699                 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1700                 break;
1701         default:
1702                 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1703                 break;
1704         }
1705         pci_dev_get(hba->pcidev);
1706         return 0;
1707 }
1708
1709 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1710 {
1711         if (hba->pcidev) {
1712                 hba->chip_num[0] = '\0';
1713                 pci_dev_put(hba->pcidev);
1714         }
1715         hba->pcidev = NULL;
1716 }
1717
1718 /**
1719  * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1720  *
1721  * @handle:    transport handle pointing to adapter struture
1722  */
1723 static int bnx2fc_ulp_get_stats(void *handle)
1724 {
1725         struct bnx2fc_hba *hba = handle;
1726         struct cnic_dev *cnic;
1727         struct fcoe_stats_info *stats_addr;
1728
1729         if (!hba)
1730                 return -EINVAL;
1731
1732         cnic = hba->cnic;
1733         stats_addr = &cnic->stats_addr->fcoe_stat;
1734         if (!stats_addr)
1735                 return -EINVAL;
1736
1737         strncpy(stats_addr->version, BNX2FC_VERSION,
1738                 sizeof(stats_addr->version));
1739         stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1740         stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1741
1742         return 0;
1743 }
1744
1745
1746 /**
1747  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1748  *
1749  * @handle:     transport handle pointing to adapter structure
1750  *
1751  * This function maps adapter structure to pcidev structure and initiates
1752  *      firmware handshake to enable/initialize on-chip FCoE components.
1753  *      This bnx2fc - cnic interface api callback is used after following
1754  *      conditions are met -
1755  *      a) underlying network interface is up (marked by event NETDEV_UP
1756  *              from netdev
1757  *      b) bnx2fc adatper structure is registered.
1758  */
1759 static void bnx2fc_ulp_start(void *handle)
1760 {
1761         struct bnx2fc_hba *hba = handle;
1762         struct bnx2fc_interface *interface;
1763         struct fcoe_ctlr *ctlr;
1764         struct fc_lport *lport;
1765
1766         mutex_lock(&bnx2fc_dev_lock);
1767
1768         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1769                 bnx2fc_fw_init(hba);
1770
1771         BNX2FC_MISC_DBG("bnx2fc started.\n");
1772
1773         list_for_each_entry(interface, &if_list, list) {
1774                 if (interface->hba == hba) {
1775                         ctlr = bnx2fc_to_ctlr(interface);
1776                         lport = ctlr->lp;
1777                         /* Kick off Fabric discovery*/
1778                         printk(KERN_ERR PFX "ulp_init: start discovery\n");
1779                         lport->tt.frame_send = bnx2fc_xmit;
1780                         bnx2fc_start_disc(interface);
1781                 }
1782         }
1783
1784         mutex_unlock(&bnx2fc_dev_lock);
1785 }
1786
1787 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1788 {
1789         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1790         fc_fabric_logoff(lport);
1791         fc_lport_destroy(lport);
1792 }
1793
1794 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1795 {
1796         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1797         struct fc_lport *lport;
1798         struct fc_lport *vport;
1799
1800         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1801                 return;
1802
1803         lport = ctlr->lp;
1804         bnx2fc_port_shutdown(lport);
1805
1806         mutex_lock(&lport->lp_mutex);
1807         list_for_each_entry(vport, &lport->vports, list)
1808                 fc_host_port_type(vport->host) =
1809                                         FC_PORTTYPE_UNKNOWN;
1810         mutex_unlock(&lport->lp_mutex);
1811         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1812         fcoe_ctlr_link_down(ctlr);
1813         fcoe_clean_pending_queue(lport);
1814 }
1815
1816 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1817 {
1818 #define BNX2FC_INIT_POLL_TIME           (1000 / HZ)
1819         int rc = -1;
1820         int i = HZ;
1821
1822         rc = bnx2fc_bind_adapter_devices(hba);
1823         if (rc) {
1824                 printk(KERN_ALERT PFX
1825                         "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1826                 goto err_out;
1827         }
1828
1829         rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1830         if (rc) {
1831                 printk(KERN_ALERT PFX
1832                         "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1833                 goto err_unbind;
1834         }
1835
1836         /*
1837          * Wait until the adapter init message is complete, and adapter
1838          * state is UP.
1839          */
1840         while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1841                 msleep(BNX2FC_INIT_POLL_TIME);
1842
1843         if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1844                 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1845                                 "Ignoring...\n",
1846                                 hba->cnic->netdev->name);
1847                 rc = -1;
1848                 goto err_unbind;
1849         }
1850
1851
1852         set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1853         return 0;
1854
1855 err_unbind:
1856         bnx2fc_unbind_adapter_devices(hba);
1857 err_out:
1858         return rc;
1859 }
1860
1861 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1862 {
1863         if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1864                 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1865                         init_timer(&hba->destroy_timer);
1866                         hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1867                                                                 jiffies;
1868                         hba->destroy_timer.function = bnx2fc_destroy_timer;
1869                         hba->destroy_timer.data = (unsigned long)hba;
1870                         add_timer(&hba->destroy_timer);
1871                         wait_event_interruptible(hba->destroy_wait,
1872                                         test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1873                                                  &hba->flags));
1874                         clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1875                         /* This should never happen */
1876                         if (signal_pending(current))
1877                                 flush_signals(current);
1878
1879                         del_timer_sync(&hba->destroy_timer);
1880                 }
1881                 bnx2fc_unbind_adapter_devices(hba);
1882         }
1883 }
1884
1885 /**
1886  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1887  *
1888  * @handle:     transport handle pointing to adapter structure
1889  *
1890  * Driver checks if adapter is already in shutdown mode, if not start
1891  *      the shutdown process.
1892  */
1893 static void bnx2fc_ulp_stop(void *handle)
1894 {
1895         struct bnx2fc_hba *hba = handle;
1896         struct bnx2fc_interface *interface;
1897
1898         printk(KERN_ERR "ULP_STOP\n");
1899
1900         mutex_lock(&bnx2fc_dev_lock);
1901         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1902                 goto exit;
1903         list_for_each_entry(interface, &if_list, list) {
1904                 if (interface->hba == hba)
1905                         bnx2fc_stop(interface);
1906         }
1907         BUG_ON(hba->num_ofld_sess != 0);
1908
1909         mutex_lock(&hba->hba_mutex);
1910         clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1911         clear_bit(ADAPTER_STATE_GOING_DOWN,
1912                   &hba->adapter_state);
1913
1914         clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1915         mutex_unlock(&hba->hba_mutex);
1916
1917         bnx2fc_fw_destroy(hba);
1918 exit:
1919         mutex_unlock(&bnx2fc_dev_lock);
1920 }
1921
1922 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1923 {
1924         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1925         struct fc_lport *lport;
1926         int wait_cnt = 0;
1927
1928         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1929         /* Kick off FIP/FLOGI */
1930         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1931                 printk(KERN_ERR PFX "Init not done yet\n");
1932                 return;
1933         }
1934
1935         lport = ctlr->lp;
1936         BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1937
1938         if (!bnx2fc_link_ok(lport) && interface->enabled) {
1939                 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1940                 fcoe_ctlr_link_up(ctlr);
1941                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1942                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1943         }
1944
1945         /* wait for the FCF to be selected before issuing FLOGI */
1946         while (!ctlr->sel_fcf) {
1947                 msleep(250);
1948                 /* give up after 3 secs */
1949                 if (++wait_cnt > 12)
1950                         break;
1951         }
1952
1953         /* Reset max receive frame size to default */
1954         if (fc_set_mfs(lport, BNX2FC_MFS))
1955                 return;
1956
1957         fc_lport_init(lport);
1958         fc_fabric_login(lport);
1959 }
1960
1961
1962 /**
1963  * bnx2fc_ulp_init - Initialize an adapter instance
1964  *
1965  * @dev :       cnic device handle
1966  * Called from cnic_register_driver() context to initialize all
1967  *      enumerated cnic devices. This routine allocates adapter structure
1968  *      and other device specific resources.
1969  */
1970 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1971 {
1972         struct bnx2fc_hba *hba;
1973         int rc = 0;
1974
1975         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1976         /* bnx2fc works only when bnx2x is loaded */
1977         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1978             (dev->max_fcoe_conn == 0)) {
1979                 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1980                                     " flags: %lx fcoe_conn: %d\n",
1981                         dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1982                 return;
1983         }
1984
1985         hba = bnx2fc_hba_create(dev);
1986         if (!hba) {
1987                 printk(KERN_ERR PFX "hba initialization failed\n");
1988                 return;
1989         }
1990
1991         /* Add HBA to the adapter list */
1992         mutex_lock(&bnx2fc_dev_lock);
1993         list_add_tail(&hba->list, &adapter_list);
1994         adapter_count++;
1995         mutex_unlock(&bnx2fc_dev_lock);
1996
1997         dev->fcoe_cap = &hba->fcoe_cap;
1998         clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1999         rc = dev->register_device(dev, CNIC_ULP_FCOE,
2000                                                 (void *) hba);
2001         if (rc)
2002                 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2003         else
2004                 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2005 }
2006
2007 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2008 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2009 {
2010         struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2011
2012         if (interface->enabled == true) {
2013                 if (!ctlr->lp) {
2014                         pr_err(PFX "__bnx2fc_disable: lport not found\n");
2015                         return -ENODEV;
2016                 } else {
2017                         interface->enabled = false;
2018                         fcoe_ctlr_link_down(ctlr);
2019                         fcoe_clean_pending_queue(ctlr->lp);
2020                 }
2021         }
2022         return 0;
2023 }
2024
2025 /**
2026  * Deperecated: Use bnx2fc_enabled()
2027  */
2028 static int bnx2fc_disable(struct net_device *netdev)
2029 {
2030         struct bnx2fc_interface *interface;
2031         struct fcoe_ctlr *ctlr;
2032         int rc = 0;
2033
2034         rtnl_lock();
2035         mutex_lock(&bnx2fc_dev_lock);
2036
2037         interface = bnx2fc_interface_lookup(netdev);
2038         ctlr = bnx2fc_to_ctlr(interface);
2039
2040         if (!interface) {
2041                 rc = -ENODEV;
2042                 pr_err(PFX "bnx2fc_disable: interface not found\n");
2043         } else {
2044                 rc = __bnx2fc_disable(ctlr);
2045         }
2046         mutex_unlock(&bnx2fc_dev_lock);
2047         rtnl_unlock();
2048         return rc;
2049 }
2050
2051 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2052 {
2053         struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2054
2055         if (interface->enabled == false) {
2056                 if (!ctlr->lp) {
2057                         pr_err(PFX "__bnx2fc_enable: lport not found\n");
2058                         return -ENODEV;
2059                 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2060                         fcoe_ctlr_link_up(ctlr);
2061                         interface->enabled = true;
2062                 }
2063         }
2064         return 0;
2065 }
2066
2067 /**
2068  * Deprecated: Use bnx2fc_enabled()
2069  */
2070 static int bnx2fc_enable(struct net_device *netdev)
2071 {
2072         struct bnx2fc_interface *interface;
2073         struct fcoe_ctlr *ctlr;
2074         int rc = 0;
2075
2076         rtnl_lock();
2077         mutex_lock(&bnx2fc_dev_lock);
2078
2079         interface = bnx2fc_interface_lookup(netdev);
2080         ctlr = bnx2fc_to_ctlr(interface);
2081         if (!interface) {
2082                 rc = -ENODEV;
2083                 pr_err(PFX "bnx2fc_enable: interface not found\n");
2084         } else {
2085                 rc = __bnx2fc_enable(ctlr);
2086         }
2087
2088         mutex_unlock(&bnx2fc_dev_lock);
2089         rtnl_unlock();
2090         return rc;
2091 }
2092
2093 /**
2094  * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2095  * @cdev: The FCoE Controller that is being enabled or disabled
2096  *
2097  * fcoe_sysfs will ensure that the state of 'enabled' has
2098  * changed, so no checking is necessary here. This routine simply
2099  * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2100  * When those routines are removed the functionality can be merged
2101  * here.
2102  */
2103 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2104 {
2105         struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2106
2107         switch (cdev->enabled) {
2108         case FCOE_CTLR_ENABLED:
2109                 return __bnx2fc_enable(ctlr);
2110         case FCOE_CTLR_DISABLED:
2111                 return __bnx2fc_disable(ctlr);
2112         case FCOE_CTLR_UNUSED:
2113         default:
2114                 return -ENOTSUPP;
2115         };
2116 }
2117
2118 enum bnx2fc_create_link_state {
2119         BNX2FC_CREATE_LINK_DOWN,
2120         BNX2FC_CREATE_LINK_UP,
2121 };
2122
2123 /**
2124  * _bnx2fc_create() - Create bnx2fc FCoE interface
2125  * @netdev  :   The net_device object the Ethernet interface to create on
2126  * @fip_mode:   The FIP mode for this creation
2127  * @link_state: The ctlr link state on creation
2128  *
2129  * Called from either the libfcoe 'create' module parameter
2130  * via fcoe_create or from fcoe_syfs's ctlr_create file.
2131  *
2132  * libfcoe's 'create' module parameter is deprecated so some
2133  * consolidation of code can be done when that interface is
2134  * removed.
2135  *
2136  * Returns: 0 for success
2137  */
2138 static int _bnx2fc_create(struct net_device *netdev,
2139                           enum fip_state fip_mode,
2140                           enum bnx2fc_create_link_state link_state)
2141 {
2142         struct fcoe_ctlr_device *cdev;
2143         struct fcoe_ctlr *ctlr;
2144         struct bnx2fc_interface *interface;
2145         struct bnx2fc_hba *hba;
2146         struct net_device *phys_dev = netdev;
2147         struct fc_lport *lport;
2148         struct ethtool_drvinfo drvinfo;
2149         int rc = 0;
2150         int vlan_id = 0;
2151
2152         BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2153         if (fip_mode != FIP_MODE_FABRIC) {
2154                 printk(KERN_ERR "fip mode not FABRIC\n");
2155                 return -EIO;
2156         }
2157
2158         rtnl_lock();
2159
2160         mutex_lock(&bnx2fc_dev_lock);
2161
2162         if (!try_module_get(THIS_MODULE)) {
2163                 rc = -EINVAL;
2164                 goto mod_err;
2165         }
2166
2167         /* obtain physical netdev */
2168         if (netdev->priv_flags & IFF_802_1Q_VLAN)
2169                 phys_dev = vlan_dev_real_dev(netdev);
2170
2171         /* verify if the physical device is a netxtreme2 device */
2172         if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2173                 memset(&drvinfo, 0, sizeof(drvinfo));
2174                 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2175                 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2176                         printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2177                         rc = -EINVAL;
2178                         goto netdev_err;
2179                 }
2180         } else {
2181                 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2182                 rc = -EINVAL;
2183                 goto netdev_err;
2184         }
2185
2186         /* obtain interface and initialize rest of the structure */
2187         hba = bnx2fc_hba_lookup(phys_dev);
2188         if (!hba) {
2189                 rc = -ENODEV;
2190                 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2191                 goto netdev_err;
2192         }
2193
2194         if (bnx2fc_interface_lookup(netdev)) {
2195                 rc = -EEXIST;
2196                 goto netdev_err;
2197         }
2198
2199         interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2200         if (!interface) {
2201                 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2202                 goto ifput_err;
2203         }
2204
2205         if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2206                 vlan_id = vlan_dev_vlan_id(netdev);
2207                 interface->vlan_enabled = 1;
2208         }
2209
2210         ctlr = bnx2fc_to_ctlr(interface);
2211         cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2212         interface->vlan_id = vlan_id;
2213
2214         interface->timer_work_queue =
2215                         create_singlethread_workqueue("bnx2fc_timer_wq");
2216         if (!interface->timer_work_queue) {
2217                 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2218                 rc = -EINVAL;
2219                 goto ifput_err;
2220         }
2221
2222         lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2223         if (!lport) {
2224                 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2225                         netdev->name);
2226                 rc = -EINVAL;
2227                 goto if_create_err;
2228         }
2229
2230         /* Add interface to if_list */
2231         list_add_tail(&interface->list, &if_list);
2232
2233         lport->boot_time = jiffies;
2234
2235         /* Make this master N_port */
2236         ctlr->lp = lport;
2237
2238         if (link_state == BNX2FC_CREATE_LINK_UP)
2239                 cdev->enabled = FCOE_CTLR_ENABLED;
2240         else
2241                 cdev->enabled = FCOE_CTLR_DISABLED;
2242
2243         if (link_state == BNX2FC_CREATE_LINK_UP &&
2244             !bnx2fc_link_ok(lport)) {
2245                 fcoe_ctlr_link_up(ctlr);
2246                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2247                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2248         }
2249
2250         BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2251         bnx2fc_start_disc(interface);
2252
2253         if (link_state == BNX2FC_CREATE_LINK_UP)
2254                 interface->enabled = true;
2255
2256         /*
2257          * Release from kref_init in bnx2fc_interface_setup, on success
2258          * lport should be holding a reference taken in bnx2fc_if_create
2259          */
2260         bnx2fc_interface_put(interface);
2261         /* put netdev that was held while calling dev_get_by_name */
2262         mutex_unlock(&bnx2fc_dev_lock);
2263         rtnl_unlock();
2264         return 0;
2265
2266 if_create_err:
2267         destroy_workqueue(interface->timer_work_queue);
2268 ifput_err:
2269         bnx2fc_net_cleanup(interface);
2270         bnx2fc_interface_put(interface);
2271         goto mod_err;
2272 netdev_err:
2273         module_put(THIS_MODULE);
2274 mod_err:
2275         mutex_unlock(&bnx2fc_dev_lock);
2276         rtnl_unlock();
2277         return rc;
2278 }
2279
2280 /**
2281  * bnx2fc_create() - Create a bnx2fc interface
2282  * @netdev  : The net_device object the Ethernet interface to create on
2283  * @fip_mode: The FIP mode for this creation
2284  *
2285  * Called from fcoe transport
2286  *
2287  * Returns: 0 for success
2288  */
2289 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2290 {
2291         return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2292 }
2293
2294 /**
2295  * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2296  * @netdev: The net_device to be used by the allocated FCoE Controller
2297  *
2298  * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2299  * in a link_down state. The allows the user an opportunity to configure
2300  * the FCoE Controller from sysfs before enabling the FCoE Controller.
2301  *
2302  * Creating in with this routine starts the FCoE Controller in Fabric
2303  * mode. The user can change to VN2VN or another mode before enabling.
2304  */
2305 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2306 {
2307         return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2308                               BNX2FC_CREATE_LINK_DOWN);
2309 }
2310
2311 /**
2312  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2313  *
2314  * @cnic:       Pointer to cnic device instance
2315  *
2316  **/
2317 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2318 {
2319         struct bnx2fc_hba *hba;
2320
2321         /* Called with bnx2fc_dev_lock held */
2322         list_for_each_entry(hba, &adapter_list, list) {
2323                 if (hba->cnic == cnic)
2324                         return hba;
2325         }
2326         return NULL;
2327 }
2328
2329 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2330                                                         *netdev)
2331 {
2332         struct bnx2fc_interface *interface;
2333
2334         /* Called with bnx2fc_dev_lock held */
2335         list_for_each_entry(interface, &if_list, list) {
2336                 if (interface->netdev == netdev)
2337                         return interface;
2338         }
2339         return NULL;
2340 }
2341
2342 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2343                                                       *phys_dev)
2344 {
2345         struct bnx2fc_hba *hba;
2346
2347         /* Called with bnx2fc_dev_lock held */
2348         list_for_each_entry(hba, &adapter_list, list) {
2349                 if (hba->phys_dev == phys_dev)
2350                         return hba;
2351         }
2352         printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2353         return NULL;
2354 }
2355
2356 /**
2357  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2358  *
2359  * @dev         cnic device handle
2360  */
2361 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2362 {
2363         struct bnx2fc_hba *hba;
2364         struct bnx2fc_interface *interface, *tmp;
2365
2366         BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2367
2368         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2369                 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2370                         dev->netdev->name, dev->flags);
2371                 return;
2372         }
2373
2374         mutex_lock(&bnx2fc_dev_lock);
2375         hba = bnx2fc_find_hba_for_cnic(dev);
2376         if (!hba) {
2377                 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2378                        dev);
2379                 mutex_unlock(&bnx2fc_dev_lock);
2380                 return;
2381         }
2382
2383         list_del_init(&hba->list);
2384         adapter_count--;
2385
2386         list_for_each_entry_safe(interface, tmp, &if_list, list)
2387                 /* destroy not called yet, move to quiesced list */
2388                 if (interface->hba == hba)
2389                         __bnx2fc_destroy(interface);
2390         mutex_unlock(&bnx2fc_dev_lock);
2391
2392         bnx2fc_ulp_stop(hba);
2393         /* unregister cnic device */
2394         if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2395                 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2396         bnx2fc_hba_destroy(hba);
2397 }
2398
2399 /**
2400  * bnx2fc_fcoe_reset - Resets the fcoe
2401  *
2402  * @shost: shost the reset is from
2403  *
2404  * Returns: always 0
2405  */
2406 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2407 {
2408         struct fc_lport *lport = shost_priv(shost);
2409         fc_lport_reset(lport);
2410         return 0;
2411 }
2412
2413
2414 static bool bnx2fc_match(struct net_device *netdev)
2415 {
2416         struct net_device *phys_dev = netdev;
2417
2418         mutex_lock(&bnx2fc_dev_lock);
2419         if (netdev->priv_flags & IFF_802_1Q_VLAN)
2420                 phys_dev = vlan_dev_real_dev(netdev);
2421
2422         if (bnx2fc_hba_lookup(phys_dev)) {
2423                 mutex_unlock(&bnx2fc_dev_lock);
2424                 return true;
2425         }
2426
2427         mutex_unlock(&bnx2fc_dev_lock);
2428         return false;
2429 }
2430
2431
2432 static struct fcoe_transport bnx2fc_transport = {
2433         .name = {"bnx2fc"},
2434         .attached = false,
2435         .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2436         .alloc = bnx2fc_ctlr_alloc,
2437         .match = bnx2fc_match,
2438         .create = bnx2fc_create,
2439         .destroy = bnx2fc_destroy,
2440         .enable = bnx2fc_enable,
2441         .disable = bnx2fc_disable,
2442 };
2443
2444 /**
2445  * bnx2fc_percpu_thread_create - Create a receive thread for an
2446  *                               online CPU
2447  *
2448  * @cpu: cpu index for the online cpu
2449  */
2450 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2451 {
2452         struct bnx2fc_percpu_s *p;
2453         struct task_struct *thread;
2454
2455         p = &per_cpu(bnx2fc_percpu, cpu);
2456
2457         thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2458                                         (void *)p, cpu_to_node(cpu),
2459                                         "bnx2fc_thread/%d", cpu);
2460         /* bind thread to the cpu */
2461         if (likely(!IS_ERR(thread))) {
2462                 kthread_bind(thread, cpu);
2463                 p->iothread = thread;
2464                 wake_up_process(thread);
2465         }
2466 }
2467
2468 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2469 {
2470         struct bnx2fc_percpu_s *p;
2471         struct task_struct *thread;
2472         struct bnx2fc_work *work, *tmp;
2473
2474         BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2475
2476         /* Prevent any new work from being queued for this CPU */
2477         p = &per_cpu(bnx2fc_percpu, cpu);
2478         spin_lock_bh(&p->fp_work_lock);
2479         thread = p->iothread;
2480         p->iothread = NULL;
2481
2482
2483         /* Free all work in the list */
2484         list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2485                 list_del_init(&work->list);
2486                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2487                 kfree(work);
2488         }
2489
2490         spin_unlock_bh(&p->fp_work_lock);
2491
2492         if (thread)
2493                 kthread_stop(thread);
2494 }
2495
2496 /**
2497  * bnx2fc_cpu_callback - Handler for CPU hotplug events
2498  *
2499  * @nfb:    The callback data block
2500  * @action: The event triggering the callback
2501  * @hcpu:   The index of the CPU that the event is for
2502  *
2503  * This creates or destroys per-CPU data for fcoe
2504  *
2505  * Returns NOTIFY_OK always.
2506  */
2507 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2508                              unsigned long action, void *hcpu)
2509 {
2510         unsigned cpu = (unsigned long)hcpu;
2511
2512         switch (action) {
2513         case CPU_ONLINE:
2514         case CPU_ONLINE_FROZEN:
2515                 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2516                 bnx2fc_percpu_thread_create(cpu);
2517                 break;
2518         case CPU_DEAD:
2519         case CPU_DEAD_FROZEN:
2520                 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2521                 bnx2fc_percpu_thread_destroy(cpu);
2522                 break;
2523         default:
2524                 break;
2525         }
2526         return NOTIFY_OK;
2527 }
2528
2529 /**
2530  * bnx2fc_mod_init - module init entry point
2531  *
2532  * Initialize driver wide global data structures, and register
2533  * with cnic module
2534  **/
2535 static int __init bnx2fc_mod_init(void)
2536 {
2537         struct fcoe_percpu_s *bg;
2538         struct task_struct *l2_thread;
2539         int rc = 0;
2540         unsigned int cpu = 0;
2541         struct bnx2fc_percpu_s *p;
2542
2543         printk(KERN_INFO PFX "%s", version);
2544
2545         /* register as a fcoe transport */
2546         rc = fcoe_transport_attach(&bnx2fc_transport);
2547         if (rc) {
2548                 printk(KERN_ERR "failed to register an fcoe transport, check "
2549                         "if libfcoe is loaded\n");
2550                 goto out;
2551         }
2552
2553         INIT_LIST_HEAD(&adapter_list);
2554         INIT_LIST_HEAD(&if_list);
2555         mutex_init(&bnx2fc_dev_lock);
2556         adapter_count = 0;
2557
2558         /* Attach FC transport template */
2559         rc = bnx2fc_attach_transport();
2560         if (rc)
2561                 goto detach_ft;
2562
2563         bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2564         if (!bnx2fc_wq) {
2565                 rc = -ENOMEM;
2566                 goto release_bt;
2567         }
2568
2569         bg = &bnx2fc_global;
2570         skb_queue_head_init(&bg->fcoe_rx_list);
2571         l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2572                                    (void *)bg,
2573                                    "bnx2fc_l2_thread");
2574         if (IS_ERR(l2_thread)) {
2575                 rc = PTR_ERR(l2_thread);
2576                 goto free_wq;
2577         }
2578         wake_up_process(l2_thread);
2579         spin_lock_bh(&bg->fcoe_rx_list.lock);
2580         bg->thread = l2_thread;
2581         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2582
2583         for_each_possible_cpu(cpu) {
2584                 p = &per_cpu(bnx2fc_percpu, cpu);
2585                 INIT_LIST_HEAD(&p->work_list);
2586                 spin_lock_init(&p->fp_work_lock);
2587         }
2588
2589         for_each_online_cpu(cpu) {
2590                 bnx2fc_percpu_thread_create(cpu);
2591         }
2592
2593         /* Initialize per CPU interrupt thread */
2594         register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2595
2596         cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2597
2598         return 0;
2599
2600 free_wq:
2601         destroy_workqueue(bnx2fc_wq);
2602 release_bt:
2603         bnx2fc_release_transport();
2604 detach_ft:
2605         fcoe_transport_detach(&bnx2fc_transport);
2606 out:
2607         return rc;
2608 }
2609
2610 static void __exit bnx2fc_mod_exit(void)
2611 {
2612         LIST_HEAD(to_be_deleted);
2613         struct bnx2fc_hba *hba, *next;
2614         struct fcoe_percpu_s *bg;
2615         struct task_struct *l2_thread;
2616         struct sk_buff *skb;
2617         unsigned int cpu = 0;
2618
2619         /*
2620          * NOTE: Since cnic calls register_driver routine rtnl_lock,
2621          * it will have higher precedence than bnx2fc_dev_lock.
2622          * unregister_device() cannot be called with bnx2fc_dev_lock
2623          * held.
2624          */
2625         mutex_lock(&bnx2fc_dev_lock);
2626         list_splice(&adapter_list, &to_be_deleted);
2627         INIT_LIST_HEAD(&adapter_list);
2628         adapter_count = 0;
2629         mutex_unlock(&bnx2fc_dev_lock);
2630
2631         /* Unregister with cnic */
2632         list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2633                 list_del_init(&hba->list);
2634                 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2635                        hba);
2636                 bnx2fc_ulp_stop(hba);
2637                 /* unregister cnic device */
2638                 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2639                                        &hba->reg_with_cnic))
2640                         hba->cnic->unregister_device(hba->cnic,
2641                                                          CNIC_ULP_FCOE);
2642                 bnx2fc_hba_destroy(hba);
2643         }
2644         cnic_unregister_driver(CNIC_ULP_FCOE);
2645
2646         /* Destroy global thread */
2647         bg = &bnx2fc_global;
2648         spin_lock_bh(&bg->fcoe_rx_list.lock);
2649         l2_thread = bg->thread;
2650         bg->thread = NULL;
2651         while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2652                 kfree_skb(skb);
2653
2654         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2655
2656         if (l2_thread)
2657                 kthread_stop(l2_thread);
2658
2659         unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2660
2661         /* Destroy per cpu threads */
2662         for_each_online_cpu(cpu) {
2663                 bnx2fc_percpu_thread_destroy(cpu);
2664         }
2665
2666         destroy_workqueue(bnx2fc_wq);
2667         /*
2668          * detach from scsi transport
2669          * must happen after all destroys are done
2670          */
2671         bnx2fc_release_transport();
2672
2673         /* detach from fcoe transport */
2674         fcoe_transport_detach(&bnx2fc_transport);
2675 }
2676
2677 module_init(bnx2fc_mod_init);
2678 module_exit(bnx2fc_mod_exit);
2679
2680 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2681         .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2682         .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2683         .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2684         .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2685         .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2686         .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2687         .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2688
2689         .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2690         .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2691 };
2692
2693 static struct fc_function_template bnx2fc_transport_function = {
2694         .show_host_node_name = 1,
2695         .show_host_port_name = 1,
2696         .show_host_supported_classes = 1,
2697         .show_host_supported_fc4s = 1,
2698         .show_host_active_fc4s = 1,
2699         .show_host_maxframe_size = 1,
2700
2701         .show_host_port_id = 1,
2702         .show_host_supported_speeds = 1,
2703         .get_host_speed = fc_get_host_speed,
2704         .show_host_speed = 1,
2705         .show_host_port_type = 1,
2706         .get_host_port_state = fc_get_host_port_state,
2707         .show_host_port_state = 1,
2708         .show_host_symbolic_name = 1,
2709
2710         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2711                                 sizeof(struct bnx2fc_rport)),
2712         .show_rport_maxframe_size = 1,
2713         .show_rport_supported_classes = 1,
2714
2715         .show_host_fabric_name = 1,
2716         .show_starget_node_name = 1,
2717         .show_starget_port_name = 1,
2718         .show_starget_port_id = 1,
2719         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2720         .show_rport_dev_loss_tmo = 1,
2721         .get_fc_host_stats = bnx2fc_get_host_stats,
2722
2723         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2724
2725         .terminate_rport_io = fc_rport_terminate_io,
2726
2727         .vport_create = bnx2fc_vport_create,
2728         .vport_delete = bnx2fc_vport_destroy,
2729         .vport_disable = bnx2fc_vport_disable,
2730         .bsg_request = fc_lport_bsg_request,
2731 };
2732
2733 static struct fc_function_template bnx2fc_vport_xport_function = {
2734         .show_host_node_name = 1,
2735         .show_host_port_name = 1,
2736         .show_host_supported_classes = 1,
2737         .show_host_supported_fc4s = 1,
2738         .show_host_active_fc4s = 1,
2739         .show_host_maxframe_size = 1,
2740
2741         .show_host_port_id = 1,
2742         .show_host_supported_speeds = 1,
2743         .get_host_speed = fc_get_host_speed,
2744         .show_host_speed = 1,
2745         .show_host_port_type = 1,
2746         .get_host_port_state = fc_get_host_port_state,
2747         .show_host_port_state = 1,
2748         .show_host_symbolic_name = 1,
2749
2750         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2751                                 sizeof(struct bnx2fc_rport)),
2752         .show_rport_maxframe_size = 1,
2753         .show_rport_supported_classes = 1,
2754
2755         .show_host_fabric_name = 1,
2756         .show_starget_node_name = 1,
2757         .show_starget_port_name = 1,
2758         .show_starget_port_id = 1,
2759         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2760         .show_rport_dev_loss_tmo = 1,
2761         .get_fc_host_stats = fc_get_host_stats,
2762         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2763         .terminate_rport_io = fc_rport_terminate_io,
2764         .bsg_request = fc_lport_bsg_request,
2765 };
2766
2767 /**
2768  * scsi_host_template structure used while registering with SCSI-ml
2769  */
2770 static struct scsi_host_template bnx2fc_shost_template = {
2771         .module                 = THIS_MODULE,
2772         .name                   = "Broadcom Offload FCoE Initiator",
2773         .queuecommand           = bnx2fc_queuecommand,
2774         .eh_abort_handler       = bnx2fc_eh_abort,        /* abts */
2775         .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2776         .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2777         .eh_host_reset_handler  = fc_eh_host_reset,
2778         .slave_alloc            = fc_slave_alloc,
2779         .change_queue_depth     = fc_change_queue_depth,
2780         .change_queue_type      = fc_change_queue_type,
2781         .this_id                = -1,
2782         .cmd_per_lun            = 3,
2783         .use_clustering         = ENABLE_CLUSTERING,
2784         .sg_tablesize           = BNX2FC_MAX_BDS_PER_CMD,
2785         .max_sectors            = 1024,
2786 };
2787
2788 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2789         .frame_send             = bnx2fc_xmit,
2790         .elsct_send             = bnx2fc_elsct_send,
2791         .fcp_abort_io           = bnx2fc_abort_io,
2792         .fcp_cleanup            = bnx2fc_cleanup,
2793         .get_lesb               = fcoe_get_lesb,
2794         .rport_event_callback   = bnx2fc_rport_event_handler,
2795 };
2796
2797 /**
2798  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2799  *                      structure carrying callback function pointers
2800  */
2801 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2802         .owner                  = THIS_MODULE,
2803         .cnic_init              = bnx2fc_ulp_init,
2804         .cnic_exit              = bnx2fc_ulp_exit,
2805         .cnic_start             = bnx2fc_ulp_start,
2806         .cnic_stop              = bnx2fc_ulp_stop,
2807         .indicate_kcqes         = bnx2fc_indicate_kcqe,
2808         .indicate_netevent      = bnx2fc_indicate_netevent,
2809         .cnic_get_stats         = bnx2fc_ulp_get_stats,
2810 };