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 - 2011 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      "Apr 24, 2012"
  26
  27
  28 static char version[] __devinitdata =
  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 static void bnx2fc_recv_frame(struct sk_buff *skb);
  66
  67 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
  68 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
  69 static int bnx2fc_lport_config(struct fc_lport *lport);
  70 static int bnx2fc_em_config(struct fc_lport *lport);
  71 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
  72 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
  73 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
  74 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
  75 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
  76                                   struct device *parent, int npiv);
  77 static void bnx2fc_destroy_work(struct work_struct *work);
  78
  79 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
  80 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
  81                                                         *phys_dev);
  82 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
  83 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
  84
  85 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
  86 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
  87
  88 static void bnx2fc_port_shutdown(struct fc_lport *lport);
  89 static void bnx2fc_stop(struct bnx2fc_interface *interface);
  90 static int __init bnx2fc_mod_init(void);
  91 static void __exit bnx2fc_mod_exit(void);
  92 static void bnx2fc_ctlr_get_lesb(struct fcoe_ctlr_device *ctlr_dev);
  93
  94 unsigned int bnx2fc_debug_level;
  95 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
  96
  97 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
  98                              unsigned long action, void *hcpu);
  99 /* notification function for CPU hotplug events */
 100 static struct notifier_block bnx2fc_cpu_notifier = {
 101         .notifier_call = bnx2fc_cpu_callback,
 102 };
 103
 104 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
 105 {
 106         return ((struct bnx2fc_interface *)
 107                 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
 108 }
 109
 110 /**
 111  * bnx2fc_get_lesb() - Fill the FCoE Link Error Status Block
 112  * @lport: the local port
 113  * @fc_lesb: the link error status block
 114  */
 115 static void bnx2fc_get_lesb(struct fc_lport *lport,
 116                             struct fc_els_lesb *fc_lesb)
 117 {
 118         struct net_device *netdev = bnx2fc_netdev(lport);
 119
 120         __fcoe_get_lesb(lport, fc_lesb, netdev);
 121 }
 122
 123 static void bnx2fc_ctlr_get_lesb(struct fcoe_ctlr_device *ctlr_dev)
 124 {
 125         struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr_dev);
 126         struct net_device *netdev = bnx2fc_netdev(fip->lp);
 127         struct fcoe_fc_els_lesb *fcoe_lesb;
 128         struct fc_els_lesb fc_lesb;
 129
 130         __fcoe_get_lesb(fip->lp, &fc_lesb, netdev);
 131         fcoe_lesb = (struct fcoe_fc_els_lesb *)(&fc_lesb);
 132
 133         ctlr_dev->lesb.lesb_link_fail =
 134                 ntohl(fcoe_lesb->lesb_link_fail);
 135         ctlr_dev->lesb.lesb_vlink_fail =
 136                 ntohl(fcoe_lesb->lesb_vlink_fail);
 137         ctlr_dev->lesb.lesb_miss_fka =
 138                 ntohl(fcoe_lesb->lesb_miss_fka);
 139         ctlr_dev->lesb.lesb_symb_err =
 140                 ntohl(fcoe_lesb->lesb_symb_err);
 141         ctlr_dev->lesb.lesb_err_block =
 142                 ntohl(fcoe_lesb->lesb_err_block);
 143         ctlr_dev->lesb.lesb_fcs_error =
 144                 ntohl(fcoe_lesb->lesb_fcs_error);
 145 }
 146 EXPORT_SYMBOL(bnx2fc_ctlr_get_lesb);
 147
 148 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
 149 {
 150         struct fcoe_ctlr_device *ctlr_dev =
 151                 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
 152         struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
 153         struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
 154
 155         fcf_dev->vlan_id = fcoe->vlan_id;
 156 }
 157
 158 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
 159 {
 160         struct fcoe_percpu_s *bg;
 161         struct fcoe_rcv_info *fr;
 162         struct sk_buff_head *list;
 163         struct sk_buff *skb, *next;
 164         struct sk_buff *head;
 165
 166         bg = &bnx2fc_global;
 167         spin_lock_bh(&bg->fcoe_rx_list.lock);
 168         list = &bg->fcoe_rx_list;
 169         head = list->next;
 170         for (skb = head; skb != (struct sk_buff *)list;
 171              skb = next) {
 172                 next = skb->next;
 173                 fr = fcoe_dev_from_skb(skb);
 174                 if (fr->fr_dev == lp) {
 175                         __skb_unlink(skb, list);
 176                         kfree_skb(skb);
 177                 }
 178         }
 179         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 180 }
 181
 182 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 183 {
 184         int rc;
 185         spin_lock(&bnx2fc_global_lock);
 186         rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
 187         spin_unlock(&bnx2fc_global_lock);
 188
 189         return rc;
 190 }
 191
 192 static void bnx2fc_abort_io(struct fc_lport *lport)
 193 {
 194         /*
 195          * This function is no-op for bnx2fc, but we do
 196          * not want to leave it as NULL either, as libfc
 197          * can call the default function which is
 198          * fc_fcp_abort_io.
 199          */
 200 }
 201
 202 static void bnx2fc_cleanup(struct fc_lport *lport)
 203 {
 204         struct fcoe_port *port = lport_priv(lport);
 205         struct bnx2fc_interface *interface = port->priv;
 206         struct bnx2fc_hba *hba = interface->hba;
 207         struct bnx2fc_rport *tgt;
 208         int i;
 209
 210         BNX2FC_MISC_DBG("Entered %s\n", __func__);
 211         mutex_lock(&hba->hba_mutex);
 212         spin_lock_bh(&hba->hba_lock);
 213         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
 214                 tgt = hba->tgt_ofld_list[i];
 215                 if (tgt) {
 216                         /* Cleanup IOs belonging to requested vport */
 217                         if (tgt->port == port) {
 218                                 spin_unlock_bh(&hba->hba_lock);
 219                                 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
 220                                 bnx2fc_flush_active_ios(tgt);
 221                                 spin_lock_bh(&hba->hba_lock);
 222                         }
 223                 }
 224         }
 225         spin_unlock_bh(&hba->hba_lock);
 226         mutex_unlock(&hba->hba_mutex);
 227 }
 228
 229 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
 230                              struct fc_frame *fp)
 231 {
 232         struct fc_rport_priv *rdata = tgt->rdata;
 233         struct fc_frame_header *fh;
 234         int rc = 0;
 235
 236         fh = fc_frame_header_get(fp);
 237         BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
 238                         "r_ctl = 0x%x\n", rdata->ids.port_id,
 239                         ntohs(fh->fh_ox_id), fh->fh_r_ctl);
 240         if ((fh->fh_type == FC_TYPE_ELS) &&
 241             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 242
 243                 switch (fc_frame_payload_op(fp)) {
 244                 case ELS_ADISC:
 245                         rc = bnx2fc_send_adisc(tgt, fp);
 246                         break;
 247                 case ELS_LOGO:
 248                         rc = bnx2fc_send_logo(tgt, fp);
 249                         break;
 250                 case ELS_RLS:
 251                         rc = bnx2fc_send_rls(tgt, fp);
 252                         break;
 253                 default:
 254                         break;
 255                 }
 256         } else if ((fh->fh_type ==  FC_TYPE_BLS) &&
 257             (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
 258                 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
 259         else {
 260                 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
 261                                 "rctl 0x%x thru non-offload path\n",
 262                                 fh->fh_type, fh->fh_r_ctl);
 263                 return -ENODEV;
 264         }
 265         if (rc)
 266                 return -ENOMEM;
 267         else
 268                 return 0;
 269 }
 270
 271 /**
 272  * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
 273  *
 274  * @lport:      the associated local port
 275  * @fp: the fc_frame to be transmitted
 276  */
 277 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
 278 {
 279         struct ethhdr           *eh;
 280         struct fcoe_crc_eof     *cp;
 281         struct sk_buff          *skb;
 282         struct fc_frame_header  *fh;
 283         struct bnx2fc_interface *interface;
 284         struct fcoe_ctlr        *ctlr;
 285         struct bnx2fc_hba *hba;
 286         struct fcoe_port        *port;
 287         struct fcoe_hdr         *hp;
 288         struct bnx2fc_rport     *tgt;
 289         struct fcoe_dev_stats   *stats;
 290         u8                      sof, eof;
 291         u32                     crc;
 292         unsigned int            hlen, tlen, elen;
 293         int                     wlen, rc = 0;
 294
 295         port = (struct fcoe_port *)lport_priv(lport);
 296         interface = port->priv;
 297         ctlr = bnx2fc_to_ctlr(interface);
 298         hba = interface->hba;
 299
 300         fh = fc_frame_header_get(fp);
 301
 302         skb = fp_skb(fp);
 303         if (!lport->link_up) {
 304                 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
 305                 kfree_skb(skb);
 306                 return 0;
 307         }
 308
 309         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 310                 if (!ctlr->sel_fcf) {
 311                         BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
 312                         kfree_skb(skb);
 313                         return -EINVAL;
 314                 }
 315                 if (fcoe_ctlr_els_send(ctlr, lport, skb))
 316                         return 0;
 317         }
 318
 319         sof = fr_sof(fp);
 320         eof = fr_eof(fp);
 321
 322         /*
 323          * Snoop the frame header to check if the frame is for
 324          * an offloaded session
 325          */
 326         /*
 327          * tgt_ofld_list access is synchronized using
 328          * both hba mutex and hba lock. Atleast hba mutex or
 329          * hba lock needs to be held for read access.
 330          */
 331
 332         spin_lock_bh(&hba->hba_lock);
 333         tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
 334         if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
 335                 /* This frame is for offloaded session */
 336                 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
 337                                 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
 338                 spin_unlock_bh(&hba->hba_lock);
 339                 rc = bnx2fc_xmit_l2_frame(tgt, fp);
 340                 if (rc != -ENODEV) {
 341                         kfree_skb(skb);
 342                         return rc;
 343                 }
 344         } else {
 345                 spin_unlock_bh(&hba->hba_lock);
 346         }
 347
 348         elen = sizeof(struct ethhdr);
 349         hlen = sizeof(struct fcoe_hdr);
 350         tlen = sizeof(struct fcoe_crc_eof);
 351         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 352
 353         skb->ip_summed = CHECKSUM_NONE;
 354         crc = fcoe_fc_crc(fp);
 355
 356         /* copy port crc and eof to the skb buff */
 357         if (skb_is_nonlinear(skb)) {
 358                 skb_frag_t *frag;
 359                 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
 360                         kfree_skb(skb);
 361                         return -ENOMEM;
 362                 }
 363                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
 364                 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
 365         } else {
 366                 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
 367         }
 368
 369         memset(cp, 0, sizeof(*cp));
 370         cp->fcoe_eof = eof;
 371         cp->fcoe_crc32 = cpu_to_le32(~crc);
 372         if (skb_is_nonlinear(skb)) {
 373                 kunmap_atomic(cp);
 374                 cp = NULL;
 375         }
 376
 377         /* adjust skb network/transport offsets to match mac/fcoe/port */
 378         skb_push(skb, elen + hlen);
 379         skb_reset_mac_header(skb);
 380         skb_reset_network_header(skb);
 381         skb->mac_len = elen;
 382         skb->protocol = htons(ETH_P_FCOE);
 383         skb->dev = interface->netdev;
 384
 385         /* fill up mac and fcoe headers */
 386         eh = eth_hdr(skb);
 387         eh->h_proto = htons(ETH_P_FCOE);
 388         if (ctlr->map_dest)
 389                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
 390         else
 391                 /* insert GW address */
 392                 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
 393
 394         if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
 395                 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
 396         else
 397                 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
 398
 399         hp = (struct fcoe_hdr *)(eh + 1);
 400         memset(hp, 0, sizeof(*hp));
 401         if (FC_FCOE_VER)
 402                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
 403         hp->fcoe_sof = sof;
 404
 405         /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
 406         if (lport->seq_offload && fr_max_payload(fp)) {
 407                 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
 408                 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
 409         } else {
 410                 skb_shinfo(skb)->gso_type = 0;
 411                 skb_shinfo(skb)->gso_size = 0;
 412         }
 413
 414         /*update tx stats */
 415         stats = per_cpu_ptr(lport->dev_stats, get_cpu());
 416         stats->TxFrames++;
 417         stats->TxWords += wlen;
 418         put_cpu();
 419
 420         /* send down to lld */
 421         fr_dev(fp) = lport;
 422         if (port->fcoe_pending_queue.qlen)
 423                 fcoe_check_wait_queue(lport, skb);
 424         else if (fcoe_start_io(skb))
 425                 fcoe_check_wait_queue(lport, skb);
 426
 427         return 0;
 428 }
 429
 430 /**
 431  * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
 432  *
 433  * @skb:        the receive socket buffer
 434  * @dev:        associated net device
 435  * @ptype:      context
 436  * @olddev:     last device
 437  *
 438  * This function receives the packet and builds FC frame and passes it up
 439  */
 440 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
 441                 struct packet_type *ptype, struct net_device *olddev)
 442 {
 443         struct fc_lport *lport;
 444         struct bnx2fc_interface *interface;
 445         struct fcoe_ctlr *ctlr;
 446         struct fc_frame_header *fh;
 447         struct fcoe_rcv_info *fr;
 448         struct fcoe_percpu_s *bg;
 449         unsigned short oxid;
 450
 451         interface = container_of(ptype, struct bnx2fc_interface,
 452                                  fcoe_packet_type);
 453         ctlr = bnx2fc_to_ctlr(interface);
 454         lport = ctlr->lp;
 455
 456         if (unlikely(lport == NULL)) {
 457                 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
 458                 goto err;
 459         }
 460
 461         if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
 462                 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
 463                 goto err;
 464         }
 465
 466         /*
 467          * Check for minimum frame length, and make sure required FCoE
 468          * and FC headers are pulled into the linear data area.
 469          */
 470         if (unlikely((skb->len < FCOE_MIN_FRAME) ||
 471             !pskb_may_pull(skb, FCOE_HEADER_LEN)))
 472                 goto err;
 473
 474         skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
 475         fh = (struct fc_frame_header *) skb_transport_header(skb);
 476
 477         oxid = ntohs(fh->fh_ox_id);
 478
 479         fr = fcoe_dev_from_skb(skb);
 480         fr->fr_dev = lport;
 481
 482         bg = &bnx2fc_global;
 483         spin_lock(&bg->fcoe_rx_list.lock);
 484
 485         __skb_queue_tail(&bg->fcoe_rx_list, skb);
 486         if (bg->fcoe_rx_list.qlen == 1)
 487                 wake_up_process(bg->thread);
 488
 489         spin_unlock(&bg->fcoe_rx_list.lock);
 490
 491         return 0;
 492 err:
 493         kfree_skb(skb);
 494         return -1;
 495 }
 496
 497 static int bnx2fc_l2_rcv_thread(void *arg)
 498 {
 499         struct fcoe_percpu_s *bg = arg;
 500         struct sk_buff *skb;
 501
 502         set_user_nice(current, -20);
 503         set_current_state(TASK_INTERRUPTIBLE);
 504         while (!kthread_should_stop()) {
 505                 schedule();
 506                 spin_lock_bh(&bg->fcoe_rx_list.lock);
 507                 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
 508                         spin_unlock_bh(&bg->fcoe_rx_list.lock);
 509                         bnx2fc_recv_frame(skb);
 510                         spin_lock_bh(&bg->fcoe_rx_list.lock);
 511                 }
 512                 __set_current_state(TASK_INTERRUPTIBLE);
 513                 spin_unlock_bh(&bg->fcoe_rx_list.lock);
 514         }
 515         __set_current_state(TASK_RUNNING);
 516         return 0;
 517 }
 518
 519
 520 static void bnx2fc_recv_frame(struct sk_buff *skb)
 521 {
 522         u32 fr_len;
 523         struct fc_lport *lport;
 524         struct fcoe_rcv_info *fr;
 525         struct fcoe_dev_stats *stats;
 526         struct fc_frame_header *fh;
 527         struct fcoe_crc_eof crc_eof;
 528         struct fc_frame *fp;
 529         struct fc_lport *vn_port;
 530         struct fcoe_port *port;
 531         u8 *mac = NULL;
 532         u8 *dest_mac = NULL;
 533         struct fcoe_hdr *hp;
 534
 535         fr = fcoe_dev_from_skb(skb);
 536         lport = fr->fr_dev;
 537         if (unlikely(lport == NULL)) {
 538                 printk(KERN_ERR PFX "Invalid lport struct\n");
 539                 kfree_skb(skb);
 540                 return;
 541         }
 542
 543         if (skb_is_nonlinear(skb))
 544                 skb_linearize(skb);
 545         mac = eth_hdr(skb)->h_source;
 546         dest_mac = eth_hdr(skb)->h_dest;
 547
 548         /* Pull the header */
 549         hp = (struct fcoe_hdr *) skb_network_header(skb);
 550         fh = (struct fc_frame_header *) skb_transport_header(skb);
 551         skb_pull(skb, sizeof(struct fcoe_hdr));
 552         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
 553
 554         stats = per_cpu_ptr(lport->dev_stats, get_cpu());
 555         stats->RxFrames++;
 556         stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
 557
 558         fp = (struct fc_frame *)skb;
 559         fc_frame_init(fp);
 560         fr_dev(fp) = lport;
 561         fr_sof(fp) = hp->fcoe_sof;
 562         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
 563                 put_cpu();
 564                 kfree_skb(skb);
 565                 return;
 566         }
 567         fr_eof(fp) = crc_eof.fcoe_eof;
 568         fr_crc(fp) = crc_eof.fcoe_crc32;
 569         if (pskb_trim(skb, fr_len)) {
 570                 put_cpu();
 571                 kfree_skb(skb);
 572                 return;
 573         }
 574
 575         fh = fc_frame_header_get(fp);
 576
 577         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
 578         if (vn_port) {
 579                 port = lport_priv(vn_port);
 580                 if (compare_ether_addr(port->data_src_addr, dest_mac)
 581                     != 0) {
 582                         BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
 583                         put_cpu();
 584                         kfree_skb(skb);
 585                         return;
 586                 }
 587         }
 588         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
 589             fh->fh_type == FC_TYPE_FCP) {
 590                 /* Drop FCP data. We dont this in L2 path */
 591                 put_cpu();
 592                 kfree_skb(skb);
 593                 return;
 594         }
 595         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
 596             fh->fh_type == FC_TYPE_ELS) {
 597                 switch (fc_frame_payload_op(fp)) {
 598                 case ELS_LOGO:
 599                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
 600                                 /* drop non-FIP LOGO */
 601                                 put_cpu();
 602                                 kfree_skb(skb);
 603                                 return;
 604                         }
 605                         break;
 606                 }
 607         }
 608
 609         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
 610                 /* Drop incoming ABTS */
 611                 put_cpu();
 612                 kfree_skb(skb);
 613                 return;
 614         }
 615
 616         if (le32_to_cpu(fr_crc(fp)) !=
 617                         ~crc32(~0, skb->data, fr_len)) {
 618                 if (stats->InvalidCRCCount < 5)
 619                         printk(KERN_WARNING PFX "dropping frame with "
 620                                "CRC error\n");
 621                 stats->InvalidCRCCount++;
 622                 put_cpu();
 623                 kfree_skb(skb);
 624                 return;
 625         }
 626         put_cpu();
 627         fc_exch_recv(lport, fp);
 628 }
 629
 630 /**
 631  * bnx2fc_percpu_io_thread - thread per cpu for ios
 632  *
 633  * @arg:        ptr to bnx2fc_percpu_info structure
 634  */
 635 int bnx2fc_percpu_io_thread(void *arg)
 636 {
 637         struct bnx2fc_percpu_s *p = arg;
 638         struct bnx2fc_work *work, *tmp;
 639         LIST_HEAD(work_list);
 640
 641         set_user_nice(current, -20);
 642         set_current_state(TASK_INTERRUPTIBLE);
 643         while (!kthread_should_stop()) {
 644                 schedule();
 645                 spin_lock_bh(&p->fp_work_lock);
 646                 while (!list_empty(&p->work_list)) {
 647                         list_splice_init(&p->work_list, &work_list);
 648                         spin_unlock_bh(&p->fp_work_lock);
 649
 650                         list_for_each_entry_safe(work, tmp, &work_list, list) {
 651                                 list_del_init(&work->list);
 652                                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
 653                                 kfree(work);
 654                         }
 655
 656                         spin_lock_bh(&p->fp_work_lock);
 657                 }
 658                 __set_current_state(TASK_INTERRUPTIBLE);
 659                 spin_unlock_bh(&p->fp_work_lock);
 660         }
 661         __set_current_state(TASK_RUNNING);
 662
 663         return 0;
 664 }
 665
 666 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
 667 {
 668         struct fc_host_statistics *bnx2fc_stats;
 669         struct fc_lport *lport = shost_priv(shost);
 670         struct fcoe_port *port = lport_priv(lport);
 671         struct bnx2fc_interface *interface = port->priv;
 672         struct bnx2fc_hba *hba = interface->hba;
 673         struct fcoe_statistics_params *fw_stats;
 674         int rc = 0;
 675
 676         fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
 677         if (!fw_stats)
 678                 return NULL;
 679
 680         bnx2fc_stats = fc_get_host_stats(shost);
 681
 682         init_completion(&hba->stat_req_done);
 683         if (bnx2fc_send_stat_req(hba))
 684                 return bnx2fc_stats;
 685         rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
 686         if (!rc) {
 687                 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
 688                 return bnx2fc_stats;
 689         }
 690         bnx2fc_stats->invalid_crc_count += fw_stats->rx_stat2.fc_crc_cnt;
 691         bnx2fc_stats->tx_frames += fw_stats->tx_stat.fcoe_tx_pkt_cnt;
 692         bnx2fc_stats->tx_words += (fw_stats->tx_stat.fcoe_tx_byte_cnt) / 4;
 693         bnx2fc_stats->rx_frames += fw_stats->rx_stat0.fcoe_rx_pkt_cnt;
 694         bnx2fc_stats->rx_words += (fw_stats->rx_stat0.fcoe_rx_byte_cnt) / 4;
 695
 696         bnx2fc_stats->dumped_frames = 0;
 697         bnx2fc_stats->lip_count = 0;
 698         bnx2fc_stats->nos_count = 0;
 699         bnx2fc_stats->loss_of_sync_count = 0;
 700         bnx2fc_stats->loss_of_signal_count = 0;
 701         bnx2fc_stats->prim_seq_protocol_err_count = 0;
 702
 703         return bnx2fc_stats;
 704 }
 705
 706 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
 707 {
 708         struct fcoe_port *port = lport_priv(lport);
 709         struct bnx2fc_interface *interface = port->priv;
 710         struct Scsi_Host *shost = lport->host;
 711         int rc = 0;
 712
 713         shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
 714         shost->max_lun = BNX2FC_MAX_LUN;
 715         shost->max_id = BNX2FC_MAX_FCP_TGT;
 716         shost->max_channel = 0;
 717         if (lport->vport)
 718                 shost->transportt = bnx2fc_vport_xport_template;
 719         else
 720                 shost->transportt = bnx2fc_transport_template;
 721
 722         /* Add the new host to SCSI-ml */
 723         rc = scsi_add_host(lport->host, dev);
 724         if (rc) {
 725                 printk(KERN_ERR PFX "Error on scsi_add_host\n");
 726                 return rc;
 727         }
 728         if (!lport->vport)
 729                 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
 730         sprintf(fc_host_symbolic_name(lport->host), "%s v%s over %s",
 731                 BNX2FC_NAME, BNX2FC_VERSION,
 732                 interface->netdev->name);
 733
 734         return 0;
 735 }
 736
 737 static void bnx2fc_link_speed_update(struct fc_lport *lport)
 738 {
 739         struct fcoe_port *port = lport_priv(lport);
 740         struct bnx2fc_interface *interface = port->priv;
 741         struct net_device *netdev = interface->netdev;
 742         struct ethtool_cmd ecmd;
 743
 744         if (!__ethtool_get_settings(netdev, &ecmd)) {
 745                 lport->link_supported_speeds &=
 746                         ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT);
 747                 if (ecmd.supported & (SUPPORTED_1000baseT_Half |
 748                                       SUPPORTED_1000baseT_Full))
 749                         lport->link_supported_speeds |= FC_PORTSPEED_1GBIT;
 750                 if (ecmd.supported & SUPPORTED_10000baseT_Full)
 751                         lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 752
 753                 switch (ethtool_cmd_speed(&ecmd)) {
 754                 case SPEED_1000:
 755                         lport->link_speed = FC_PORTSPEED_1GBIT;
 756                         break;
 757                 case SPEED_2500:
 758                         lport->link_speed = FC_PORTSPEED_2GBIT;
 759                         break;
 760                 case SPEED_10000:
 761                         lport->link_speed = FC_PORTSPEED_10GBIT;
 762                         break;
 763                 }
 764         }
 765 }
 766 static int bnx2fc_link_ok(struct fc_lport *lport)
 767 {
 768         struct fcoe_port *port = lport_priv(lport);
 769         struct bnx2fc_interface *interface = port->priv;
 770         struct bnx2fc_hba *hba = interface->hba;
 771         struct net_device *dev = hba->phys_dev;
 772         int rc = 0;
 773
 774         if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
 775                 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 776         else {
 777                 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 778                 rc = -1;
 779         }
 780         return rc;
 781 }
 782
 783 /**
 784  * bnx2fc_get_link_state - get network link state
 785  *
 786  * @hba:        adapter instance pointer
 787  *
 788  * updates adapter structure flag based on netdev state
 789  */
 790 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
 791 {
 792         if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
 793                 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 794         else
 795                 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 796 }
 797
 798 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
 799 {
 800         struct bnx2fc_hba *hba;
 801         struct bnx2fc_interface *interface;
 802         struct fcoe_ctlr *ctlr;
 803         struct fcoe_port *port;
 804         u64 wwnn, wwpn;
 805
 806         port = lport_priv(lport);
 807         interface = port->priv;
 808         ctlr = bnx2fc_to_ctlr(interface);
 809         hba = interface->hba;
 810
 811         /* require support for get_pauseparam ethtool op. */
 812         if (!hba->phys_dev->ethtool_ops ||
 813             !hba->phys_dev->ethtool_ops->get_pauseparam)
 814                 return -EOPNOTSUPP;
 815
 816         if (fc_set_mfs(lport, BNX2FC_MFS))
 817                 return -EINVAL;
 818
 819         skb_queue_head_init(&port->fcoe_pending_queue);
 820         port->fcoe_pending_queue_active = 0;
 821         setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
 822
 823         bnx2fc_link_speed_update(lport);
 824
 825         if (!lport->vport) {
 826                 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
 827                         wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
 828                                                  1, 0);
 829                 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
 830                 fc_set_wwnn(lport, wwnn);
 831
 832                 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
 833                         wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
 834                                                  2, 0);
 835
 836                 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
 837                 fc_set_wwpn(lport, wwpn);
 838         }
 839
 840         return 0;
 841 }
 842
 843 static void bnx2fc_destroy_timer(unsigned long data)
 844 {
 845         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
 846
 847         printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
 848                "Destroy compl not received!!\n");
 849         set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
 850         wake_up_interruptible(&hba->destroy_wait);
 851 }
 852
 853 /**
 854  * bnx2fc_indicate_netevent - Generic netdev event handler
 855  *
 856  * @context:    adapter structure pointer
 857  * @event:      event type
 858  * @vlan_id:    vlan id - associated vlan id with this event
 859  *
 860  * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
 861  * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
 862  */
 863 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
 864                                      u16 vlan_id)
 865 {
 866         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
 867         struct fc_lport *lport;
 868         struct fc_lport *vport;
 869         struct bnx2fc_interface *interface, *tmp;
 870         struct fcoe_ctlr *ctlr;
 871         int wait_for_upload = 0;
 872         u32 link_possible = 1;
 873
 874         if (vlan_id != 0 && event != NETDEV_UNREGISTER)
 875                 return;
 876
 877         switch (event) {
 878         case NETDEV_UP:
 879                 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
 880                         printk(KERN_ERR "indicate_netevent: "\
 881                                         "hba is not UP!!\n");
 882                 break;
 883
 884         case NETDEV_DOWN:
 885                 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 886                 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
 887                 link_possible = 0;
 888                 break;
 889
 890         case NETDEV_GOING_DOWN:
 891                 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 892                 link_possible = 0;
 893                 break;
 894
 895         case NETDEV_CHANGE:
 896                 break;
 897
 898         case NETDEV_UNREGISTER:
 899                 if (!vlan_id)
 900                         return;
 901                 mutex_lock(&bnx2fc_dev_lock);
 902                 list_for_each_entry_safe(interface, tmp, &if_list, list) {
 903                         if (interface->hba == hba &&
 904                             interface->vlan_id == (vlan_id & VLAN_VID_MASK))
 905                                 __bnx2fc_destroy(interface);
 906                 }
 907                 mutex_unlock(&bnx2fc_dev_lock);
 908                 return;
 909
 910         default:
 911                 printk(KERN_ERR PFX "Unkonwn netevent %ld", event);
 912                 return;
 913         }
 914
 915         mutex_lock(&bnx2fc_dev_lock);
 916         list_for_each_entry(interface, &if_list, list) {
 917
 918                 if (interface->hba != hba)
 919                         continue;
 920
 921                 ctlr = bnx2fc_to_ctlr(interface);
 922                 lport = ctlr->lp;
 923                 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
 924                                 interface->netdev->name, event);
 925
 926                 bnx2fc_link_speed_update(lport);
 927
 928                 if (link_possible && !bnx2fc_link_ok(lport)) {
 929                         /* Reset max recv frame size to default */
 930                         fc_set_mfs(lport, BNX2FC_MFS);
 931                         /*
 932                          * ctlr link up will only be handled during
 933                          * enable to avoid sending discovery solicitation
 934                          * on a stale vlan
 935                          */
 936                         if (interface->enabled)
 937                                 fcoe_ctlr_link_up(ctlr);
 938                 } else if (fcoe_ctlr_link_down(ctlr)) {
 939                         mutex_lock(&lport->lp_mutex);
 940                         list_for_each_entry(vport, &lport->vports, list)
 941                                 fc_host_port_type(vport->host) =
 942                                                         FC_PORTTYPE_UNKNOWN;
 943                         mutex_unlock(&lport->lp_mutex);
 944                         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
 945                         per_cpu_ptr(lport->dev_stats,
 946                                     get_cpu())->LinkFailureCount++;
 947                         put_cpu();
 948                         fcoe_clean_pending_queue(lport);
 949                         wait_for_upload = 1;
 950                 }
 951         }
 952         mutex_unlock(&bnx2fc_dev_lock);
 953
 954         if (wait_for_upload) {
 955                 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
 956                 init_waitqueue_head(&hba->shutdown_wait);
 957                 BNX2FC_MISC_DBG("indicate_netevent "
 958                                 "num_ofld_sess = %d\n",
 959                                 hba->num_ofld_sess);
 960                 hba->wait_for_link_down = 1;
 961                 wait_event_interruptible(hba->shutdown_wait,
 962                                          (hba->num_ofld_sess == 0));
 963                 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
 964                                 hba->num_ofld_sess);
 965                 hba->wait_for_link_down = 0;
 966
 967                 if (signal_pending(current))
 968                         flush_signals(current);
 969         }
 970 }
 971
 972 static int bnx2fc_libfc_config(struct fc_lport *lport)
 973 {
 974
 975         /* Set the function pointers set by bnx2fc driver */
 976         memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
 977                 sizeof(struct libfc_function_template));
 978         fc_elsct_init(lport);
 979         fc_exch_init(lport);
 980         fc_rport_init(lport);
 981         fc_disc_init(lport);
 982         return 0;
 983 }
 984
 985 static int bnx2fc_em_config(struct fc_lport *lport)
 986 {
 987         int max_xid;
 988
 989         if (nr_cpu_ids <= 2)
 990                 max_xid = FCOE_XIDS_PER_CPU;
 991         else
 992                 max_xid = FCOE_MAX_XID;
 993         if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID,
 994                                 max_xid, NULL)) {
 995                 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
 996                 return -ENOMEM;
 997         }
 998
 999         return 0;
1000 }
1001
1002 static int bnx2fc_lport_config(struct fc_lport *lport)
1003 {
1004         lport->link_up = 0;
1005         lport->qfull = 0;
1006         lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
1007         lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
1008         lport->e_d_tov = 2 * 1000;
1009         lport->r_a_tov = 10 * 1000;
1010
1011         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1012                                 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1013         lport->does_npiv = 1;
1014
1015         memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1016         lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1017
1018         /* alloc stats structure */
1019         if (fc_lport_init_stats(lport))
1020                 return -ENOMEM;
1021
1022         /* Finish fc_lport configuration */
1023         fc_lport_config(lport);
1024
1025         return 0;
1026 }
1027
1028 /**
1029  * bnx2fc_fip_recv - handle a received FIP frame.
1030  *
1031  * @skb: the received skb
1032  * @dev: associated &net_device
1033  * @ptype: the &packet_type structure which was used to register this handler.
1034  * @orig_dev: original receive &net_device, in case @ dev is a bond.
1035  *
1036  * Returns: 0 for success
1037  */
1038 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1039                            struct packet_type *ptype,
1040                            struct net_device *orig_dev)
1041 {
1042         struct bnx2fc_interface *interface;
1043         struct fcoe_ctlr *ctlr;
1044         interface = container_of(ptype, struct bnx2fc_interface,
1045                                  fip_packet_type);
1046         ctlr = bnx2fc_to_ctlr(interface);
1047         fcoe_ctlr_recv(ctlr, skb);
1048         return 0;
1049 }
1050
1051 /**
1052  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1053  *
1054  * @fip: FCoE controller.
1055  * @old: Unicast MAC address to delete if the MAC is non-zero.
1056  * @new: Unicast MAC address to add.
1057  *
1058  * Remove any previously-set unicast MAC filter.
1059  * Add secondary FCoE MAC address filter for our OUI.
1060  */
1061 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1062 {
1063         struct fcoe_port *port = lport_priv(lport);
1064
1065         memcpy(port->data_src_addr, addr, ETH_ALEN);
1066 }
1067
1068 /**
1069  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1070  *
1071  * @lport: libfc port
1072  */
1073 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1074 {
1075         struct fcoe_port *port;
1076
1077         port = (struct fcoe_port *)lport_priv(lport);
1078         return port->data_src_addr;
1079 }
1080
1081 /**
1082  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1083  *
1084  * @fip: FCoE controller.
1085  * @skb: FIP Packet.
1086  */
1087 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1088 {
1089         skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1090         dev_queue_xmit(skb);
1091 }
1092
1093 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1094 {
1095         struct Scsi_Host *shost = vport_to_shost(vport);
1096         struct fc_lport *n_port = shost_priv(shost);
1097         struct fcoe_port *port = lport_priv(n_port);
1098         struct bnx2fc_interface *interface = port->priv;
1099         struct net_device *netdev = interface->netdev;
1100         struct fc_lport *vn_port;
1101         int rc;
1102         char buf[32];
1103
1104         rc = fcoe_validate_vport_create(vport);
1105         if (rc) {
1106                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1107                 printk(KERN_ERR PFX "Failed to create vport, "
1108                        "WWPN (0x%s) already exists\n",
1109                        buf);
1110                 return rc;
1111         }
1112
1113         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1114                 printk(KERN_ERR PFX "vn ports cannot be created on"
1115                         "this interface\n");
1116                 return -EIO;
1117         }
1118         rtnl_lock();
1119         mutex_lock(&bnx2fc_dev_lock);
1120         vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1121         mutex_unlock(&bnx2fc_dev_lock);
1122         rtnl_unlock();
1123
1124         if (IS_ERR(vn_port)) {
1125                 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1126                         netdev->name);
1127                 return -EIO;
1128         }
1129
1130         if (disabled) {
1131                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1132         } else {
1133                 vn_port->boot_time = jiffies;
1134                 fc_lport_init(vn_port);
1135                 fc_fabric_login(vn_port);
1136                 fc_vport_setlink(vn_port);
1137         }
1138         return 0;
1139 }
1140
1141 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1142 {
1143         struct bnx2fc_lport *blport, *tmp;
1144
1145         spin_lock_bh(&hba->hba_lock);
1146         list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1147                 if (blport->lport == lport) {
1148                         list_del(&blport->list);
1149                         kfree(blport);
1150                 }
1151         }
1152         spin_unlock_bh(&hba->hba_lock);
1153 }
1154
1155 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1156 {
1157         struct Scsi_Host *shost = vport_to_shost(vport);
1158         struct fc_lport *n_port = shost_priv(shost);
1159         struct fc_lport *vn_port = vport->dd_data;
1160         struct fcoe_port *port = lport_priv(vn_port);
1161         struct bnx2fc_interface *interface = port->priv;
1162         struct fc_lport *v_port;
1163         bool found = false;
1164
1165         mutex_lock(&n_port->lp_mutex);
1166         list_for_each_entry(v_port, &n_port->vports, list)
1167                 if (v_port->vport == vport) {
1168                         found = true;
1169                         break;
1170                 }
1171
1172         if (!found) {
1173                 mutex_unlock(&n_port->lp_mutex);
1174                 return -ENOENT;
1175         }
1176         list_del(&vn_port->list);
1177         mutex_unlock(&n_port->lp_mutex);
1178         bnx2fc_free_vport(interface->hba, port->lport);
1179         bnx2fc_port_shutdown(port->lport);
1180         bnx2fc_interface_put(interface);
1181         queue_work(bnx2fc_wq, &port->destroy_work);
1182         return 0;
1183 }
1184
1185 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1186 {
1187         struct fc_lport *lport = vport->dd_data;
1188
1189         if (disable) {
1190                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1191                 fc_fabric_logoff(lport);
1192         } else {
1193                 lport->boot_time = jiffies;
1194                 fc_fabric_login(lport);
1195                 fc_vport_setlink(lport);
1196         }
1197         return 0;
1198 }
1199
1200
1201 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1202 {
1203         struct net_device *netdev = interface->netdev;
1204         struct net_device *physdev = interface->hba->phys_dev;
1205         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1206         struct netdev_hw_addr *ha;
1207         int sel_san_mac = 0;
1208
1209         /* setup Source MAC Address */
1210         rcu_read_lock();
1211         for_each_dev_addr(physdev, ha) {
1212                 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1213                                 ha->type);
1214                 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1215                                 ha->addr[1], ha->addr[2], ha->addr[3],
1216                                 ha->addr[4], ha->addr[5]);
1217
1218                 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1219                     (is_valid_ether_addr(ha->addr))) {
1220                         memcpy(ctlr->ctl_src_addr, ha->addr,
1221                                ETH_ALEN);
1222                         sel_san_mac = 1;
1223                         BNX2FC_MISC_DBG("Found SAN MAC\n");
1224                 }
1225         }
1226         rcu_read_unlock();
1227
1228         if (!sel_san_mac)
1229                 return -ENODEV;
1230
1231         interface->fip_packet_type.func = bnx2fc_fip_recv;
1232         interface->fip_packet_type.type = htons(ETH_P_FIP);
1233         interface->fip_packet_type.dev = netdev;
1234         dev_add_pack(&interface->fip_packet_type);
1235
1236         interface->fcoe_packet_type.func = bnx2fc_rcv;
1237         interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1238         interface->fcoe_packet_type.dev = netdev;
1239         dev_add_pack(&interface->fcoe_packet_type);
1240
1241         return 0;
1242 }
1243
1244 static int bnx2fc_attach_transport(void)
1245 {
1246         bnx2fc_transport_template =
1247                 fc_attach_transport(&bnx2fc_transport_function);
1248
1249         if (bnx2fc_transport_template == NULL) {
1250                 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1251                 return -ENODEV;
1252         }
1253
1254         bnx2fc_vport_xport_template =
1255                 fc_attach_transport(&bnx2fc_vport_xport_function);
1256         if (bnx2fc_vport_xport_template == NULL) {
1257                 printk(KERN_ERR PFX
1258                        "Failed to attach FC transport for vport\n");
1259                 fc_release_transport(bnx2fc_transport_template);
1260                 bnx2fc_transport_template = NULL;
1261                 return -ENODEV;
1262         }
1263         return 0;
1264 }
1265 static void bnx2fc_release_transport(void)
1266 {
1267         fc_release_transport(bnx2fc_transport_template);
1268         fc_release_transport(bnx2fc_vport_xport_template);
1269         bnx2fc_transport_template = NULL;
1270         bnx2fc_vport_xport_template = NULL;
1271 }
1272
1273 static void bnx2fc_interface_release(struct kref *kref)
1274 {
1275         struct fcoe_ctlr_device *ctlr_dev;
1276         struct bnx2fc_interface *interface;
1277         struct fcoe_ctlr *ctlr;
1278         struct net_device *netdev;
1279
1280         interface = container_of(kref, struct bnx2fc_interface, kref);
1281         BNX2FC_MISC_DBG("Interface is being released\n");
1282
1283         ctlr = bnx2fc_to_ctlr(interface);
1284         ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1285         netdev = interface->netdev;
1286
1287         /* tear-down FIP controller */
1288         if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1289                 fcoe_ctlr_destroy(ctlr);
1290
1291         fcoe_ctlr_device_delete(ctlr_dev);
1292
1293         dev_put(netdev);
1294         module_put(THIS_MODULE);
1295 }
1296
1297 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1298 {
1299         kref_get(&interface->kref);
1300 }
1301
1302 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1303 {
1304         kref_put(&interface->kref, bnx2fc_interface_release);
1305 }
1306 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1307 {
1308         /* Free the command manager */
1309         if (hba->cmd_mgr) {
1310                 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1311                 hba->cmd_mgr = NULL;
1312         }
1313         kfree(hba->tgt_ofld_list);
1314         bnx2fc_unbind_pcidev(hba);
1315         kfree(hba);
1316 }
1317
1318 /**
1319  * bnx2fc_hba_create - create a new bnx2fc hba
1320  *
1321  * @cnic:       pointer to cnic device
1322  *
1323  * Creates a new FCoE hba on the given device.
1324  *
1325  */
1326 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1327 {
1328         struct bnx2fc_hba *hba;
1329         int rc;
1330
1331         hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1332         if (!hba) {
1333                 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1334                 return NULL;
1335         }
1336         spin_lock_init(&hba->hba_lock);
1337         mutex_init(&hba->hba_mutex);
1338
1339         hba->cnic = cnic;
1340         rc = bnx2fc_bind_pcidev(hba);
1341         if (rc) {
1342                 printk(KERN_ERR PFX "create_adapter:  bind error\n");
1343                 goto bind_err;
1344         }
1345         hba->phys_dev = cnic->netdev;
1346         hba->next_conn_id = 0;
1347
1348         hba->tgt_ofld_list =
1349                 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1350                         GFP_KERNEL);
1351         if (!hba->tgt_ofld_list) {
1352                 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1353                 goto tgtofld_err;
1354         }
1355
1356         hba->num_ofld_sess = 0;
1357
1358         hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID,
1359                                                 BNX2FC_MAX_XID);
1360         if (!hba->cmd_mgr) {
1361                 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1362                 goto cmgr_err;
1363         }
1364
1365         init_waitqueue_head(&hba->shutdown_wait);
1366         init_waitqueue_head(&hba->destroy_wait);
1367         INIT_LIST_HEAD(&hba->vports);
1368
1369         return hba;
1370
1371 cmgr_err:
1372         kfree(hba->tgt_ofld_list);
1373 tgtofld_err:
1374         bnx2fc_unbind_pcidev(hba);
1375 bind_err:
1376         kfree(hba);
1377         return NULL;
1378 }
1379
1380 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1381                                       struct net_device *netdev,
1382                                       enum fip_state fip_mode)
1383 {
1384         struct fcoe_ctlr_device *ctlr_dev;
1385         struct bnx2fc_interface *interface;
1386         struct fcoe_ctlr *ctlr;
1387         int size;
1388         int rc = 0;
1389
1390         size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1391         ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1392                                          size);
1393         if (!ctlr_dev) {
1394                 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1395                 return NULL;
1396         }
1397         ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1398         interface = fcoe_ctlr_priv(ctlr);
1399         dev_hold(netdev);
1400         kref_init(&interface->kref);
1401         interface->hba = hba;
1402         interface->netdev = netdev;
1403
1404         /* Initialize FIP */
1405         fcoe_ctlr_init(ctlr, fip_mode);
1406         ctlr->send = bnx2fc_fip_send;
1407         ctlr->update_mac = bnx2fc_update_src_mac;
1408         ctlr->get_src_addr = bnx2fc_get_src_mac;
1409         set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1410
1411         rc = bnx2fc_interface_setup(interface);
1412         if (!rc)
1413                 return interface;
1414
1415         fcoe_ctlr_destroy(ctlr);
1416         dev_put(netdev);
1417         fcoe_ctlr_device_delete(ctlr_dev);
1418         return NULL;
1419 }
1420
1421 /**
1422  * bnx2fc_if_create - Create FCoE instance on a given interface
1423  *
1424  * @interface:  FCoE interface to create a local port on
1425  * @parent:     Device pointer to be the parent in sysfs for the SCSI host
1426  * @npiv:       Indicates if the port is vport or not
1427  *
1428  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1429  *
1430  * Returns:     Allocated fc_lport or an error pointer
1431  */
1432 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1433                                   struct device *parent, int npiv)
1434 {
1435         struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1436         struct fc_lport         *lport, *n_port;
1437         struct fcoe_port        *port;
1438         struct Scsi_Host        *shost;
1439         struct fc_vport         *vport = dev_to_vport(parent);
1440         struct bnx2fc_lport     *blport;
1441         struct bnx2fc_hba       *hba;
1442         int                     rc = 0;
1443
1444         blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1445         if (!blport) {
1446                 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1447                 return NULL;
1448         }
1449
1450         /* Allocate Scsi_Host structure */
1451         if (!npiv)
1452                 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1453         else
1454                 lport = libfc_vport_create(vport, sizeof(*port));
1455
1456         if (!lport) {
1457                 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1458                 goto free_blport;
1459         }
1460         shost = lport->host;
1461         port = lport_priv(lport);
1462         port->lport = lport;
1463         port->priv = interface;
1464         INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1465
1466         /* Configure fcoe_port */
1467         rc = bnx2fc_lport_config(lport);
1468         if (rc)
1469                 goto lp_config_err;
1470
1471         if (npiv) {
1472                 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1473                         vport->node_name, vport->port_name);
1474                 fc_set_wwnn(lport, vport->node_name);
1475                 fc_set_wwpn(lport, vport->port_name);
1476         }
1477         /* Configure netdev and networking properties of the lport */
1478         rc = bnx2fc_net_config(lport, interface->netdev);
1479         if (rc) {
1480                 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1481                 goto lp_config_err;
1482         }
1483
1484         rc = bnx2fc_shost_config(lport, parent);
1485         if (rc) {
1486                 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1487                         interface->netdev->name);
1488                 goto lp_config_err;
1489         }
1490
1491         /* Initialize the libfc library */
1492         rc = bnx2fc_libfc_config(lport);
1493         if (rc) {
1494                 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1495                 goto shost_err;
1496         }
1497         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1498
1499         /* Allocate exchange manager */
1500         if (!npiv)
1501                 rc = bnx2fc_em_config(lport);
1502         else {
1503                 shost = vport_to_shost(vport);
1504                 n_port = shost_priv(shost);
1505                 rc = fc_exch_mgr_list_clone(n_port, lport);
1506         }
1507
1508         if (rc) {
1509                 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1510                 goto shost_err;
1511         }
1512
1513         bnx2fc_interface_get(interface);
1514
1515         hba = interface->hba;
1516         spin_lock_bh(&hba->hba_lock);
1517         blport->lport = lport;
1518         list_add_tail(&blport->list, &hba->vports);
1519         spin_unlock_bh(&hba->hba_lock);
1520
1521         return lport;
1522
1523 shost_err:
1524         scsi_remove_host(shost);
1525 lp_config_err:
1526         scsi_host_put(lport->host);
1527 free_blport:
1528         kfree(blport);
1529         return NULL;
1530 }
1531
1532 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1533 {
1534         /* Dont listen for Ethernet packets anymore */
1535         __dev_remove_pack(&interface->fcoe_packet_type);
1536         __dev_remove_pack(&interface->fip_packet_type);
1537         synchronize_net();
1538 }
1539
1540 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1541 {
1542         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1543         struct fc_lport *lport = ctlr->lp;
1544         struct fcoe_port *port = lport_priv(lport);
1545         struct bnx2fc_hba *hba = interface->hba;
1546
1547         /* Stop the transmit retry timer */
1548         del_timer_sync(&port->timer);
1549
1550         /* Free existing transmit skbs */
1551         fcoe_clean_pending_queue(lport);
1552
1553         bnx2fc_net_cleanup(interface);
1554
1555         bnx2fc_free_vport(hba, lport);
1556 }
1557
1558 static void bnx2fc_if_destroy(struct fc_lport *lport)
1559 {
1560
1561         /* Free queued packets for the receive thread */
1562         bnx2fc_clean_rx_queue(lport);
1563
1564         /* Detach from scsi-ml */
1565         fc_remove_host(lport->host);
1566         scsi_remove_host(lport->host);
1567
1568         /*
1569          * Note that only the physical lport will have the exchange manager.
1570          * for vports, this function is NOP
1571          */
1572         fc_exch_mgr_free(lport);
1573
1574         /* Free memory used by statistical counters */
1575         fc_lport_free_stats(lport);
1576
1577         /* Release Scsi_Host */
1578         scsi_host_put(lport->host);
1579 }
1580
1581 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1582 {
1583         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1584         struct fc_lport *lport = ctlr->lp;
1585         struct fcoe_port *port = lport_priv(lport);
1586
1587         bnx2fc_interface_cleanup(interface);
1588         bnx2fc_stop(interface);
1589         list_del(&interface->list);
1590         bnx2fc_interface_put(interface);
1591         queue_work(bnx2fc_wq, &port->destroy_work);
1592 }
1593
1594 /**
1595  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1596  *
1597  * @buffer: The name of the Ethernet interface to be destroyed
1598  * @kp:     The associated kernel parameter
1599  *
1600  * Called from sysfs.
1601  *
1602  * Returns: 0 for success
1603  */
1604 static int bnx2fc_destroy(struct net_device *netdev)
1605 {
1606         struct bnx2fc_interface *interface = NULL;
1607         struct workqueue_struct *timer_work_queue;
1608         struct fcoe_ctlr *ctlr;
1609         int rc = 0;
1610
1611         rtnl_lock();
1612         mutex_lock(&bnx2fc_dev_lock);
1613
1614         interface = bnx2fc_interface_lookup(netdev);
1615         ctlr = bnx2fc_to_ctlr(interface);
1616         if (!interface || !ctlr->lp) {
1617                 rc = -ENODEV;
1618                 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1619                 goto netdev_err;
1620         }
1621
1622         timer_work_queue = interface->timer_work_queue;
1623         __bnx2fc_destroy(interface);
1624         destroy_workqueue(timer_work_queue);
1625
1626 netdev_err:
1627         mutex_unlock(&bnx2fc_dev_lock);
1628         rtnl_unlock();
1629         return rc;
1630 }
1631
1632 static void bnx2fc_destroy_work(struct work_struct *work)
1633 {
1634         struct fcoe_port *port;
1635         struct fc_lport *lport;
1636
1637         port = container_of(work, struct fcoe_port, destroy_work);
1638         lport = port->lport;
1639
1640         BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1641
1642         bnx2fc_if_destroy(lport);
1643 }
1644
1645 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1646 {
1647         bnx2fc_free_fw_resc(hba);
1648         bnx2fc_free_task_ctx(hba);
1649 }
1650
1651 /**
1652  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1653  *                      pci structure
1654  *
1655  * @hba:                Adapter instance
1656  */
1657 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1658 {
1659         if (bnx2fc_setup_task_ctx(hba))
1660                 goto mem_err;
1661
1662         if (bnx2fc_setup_fw_resc(hba))
1663                 goto mem_err;
1664
1665         return 0;
1666 mem_err:
1667         bnx2fc_unbind_adapter_devices(hba);
1668         return -ENOMEM;
1669 }
1670
1671 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1672 {
1673         struct cnic_dev *cnic;
1674
1675         if (!hba->cnic) {
1676                 printk(KERN_ERR PFX "cnic is NULL\n");
1677                 return -ENODEV;
1678         }
1679         cnic = hba->cnic;
1680         hba->pcidev = cnic->pcidev;
1681         if (hba->pcidev)
1682                 pci_dev_get(hba->pcidev);
1683
1684         return 0;
1685 }
1686
1687 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1688 {
1689         if (hba->pcidev)
1690                 pci_dev_put(hba->pcidev);
1691         hba->pcidev = NULL;
1692 }
1693
1694
1695
1696 /**
1697  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1698  *
1699  * @handle:     transport handle pointing to adapter struture
1700  *
1701  * This function maps adapter structure to pcidev structure and initiates
1702  *      firmware handshake to enable/initialize on-chip FCoE components.
1703  *      This bnx2fc - cnic interface api callback is used after following
1704  *      conditions are met -
1705  *      a) underlying network interface is up (marked by event NETDEV_UP
1706  *              from netdev
1707  *      b) bnx2fc adatper structure is registered.
1708  */
1709 static void bnx2fc_ulp_start(void *handle)
1710 {
1711         struct bnx2fc_hba *hba = handle;
1712         struct bnx2fc_interface *interface;
1713         struct fcoe_ctlr *ctlr;
1714         struct fc_lport *lport;
1715
1716         mutex_lock(&bnx2fc_dev_lock);
1717
1718         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1719                 bnx2fc_fw_init(hba);
1720
1721         BNX2FC_MISC_DBG("bnx2fc started.\n");
1722
1723         list_for_each_entry(interface, &if_list, list) {
1724                 if (interface->hba == hba) {
1725                         ctlr = bnx2fc_to_ctlr(interface);
1726                         lport = ctlr->lp;
1727                         /* Kick off Fabric discovery*/
1728                         printk(KERN_ERR PFX "ulp_init: start discovery\n");
1729                         lport->tt.frame_send = bnx2fc_xmit;
1730                         bnx2fc_start_disc(interface);
1731                 }
1732         }
1733
1734         mutex_unlock(&bnx2fc_dev_lock);
1735 }
1736
1737 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1738 {
1739         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1740         fc_fabric_logoff(lport);
1741         fc_lport_destroy(lport);
1742 }
1743
1744 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1745 {
1746         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1747         struct fc_lport *lport;
1748         struct fc_lport *vport;
1749
1750         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1751                 return;
1752
1753         lport = ctlr->lp;
1754         bnx2fc_port_shutdown(lport);
1755
1756         mutex_lock(&lport->lp_mutex);
1757         list_for_each_entry(vport, &lport->vports, list)
1758                 fc_host_port_type(vport->host) =
1759                                         FC_PORTTYPE_UNKNOWN;
1760         mutex_unlock(&lport->lp_mutex);
1761         fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1762         fcoe_ctlr_link_down(ctlr);
1763         fcoe_clean_pending_queue(lport);
1764 }
1765
1766 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1767 {
1768 #define BNX2FC_INIT_POLL_TIME           (1000 / HZ)
1769         int rc = -1;
1770         int i = HZ;
1771
1772         rc = bnx2fc_bind_adapter_devices(hba);
1773         if (rc) {
1774                 printk(KERN_ALERT PFX
1775                         "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1776                 goto err_out;
1777         }
1778
1779         rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1780         if (rc) {
1781                 printk(KERN_ALERT PFX
1782                         "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1783                 goto err_unbind;
1784         }
1785
1786         /*
1787          * Wait until the adapter init message is complete, and adapter
1788          * state is UP.
1789          */
1790         while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1791                 msleep(BNX2FC_INIT_POLL_TIME);
1792
1793         if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1794                 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1795                                 "Ignoring...\n",
1796                                 hba->cnic->netdev->name);
1797                 rc = -1;
1798                 goto err_unbind;
1799         }
1800
1801
1802         set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1803         return 0;
1804
1805 err_unbind:
1806         bnx2fc_unbind_adapter_devices(hba);
1807 err_out:
1808         return rc;
1809 }
1810
1811 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1812 {
1813         if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1814                 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1815                         init_timer(&hba->destroy_timer);
1816                         hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1817                                                                 jiffies;
1818                         hba->destroy_timer.function = bnx2fc_destroy_timer;
1819                         hba->destroy_timer.data = (unsigned long)hba;
1820                         add_timer(&hba->destroy_timer);
1821                         wait_event_interruptible(hba->destroy_wait,
1822                                         test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1823                                                  &hba->flags));
1824                         clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1825                         /* This should never happen */
1826                         if (signal_pending(current))
1827                                 flush_signals(current);
1828
1829                         del_timer_sync(&hba->destroy_timer);
1830                 }
1831                 bnx2fc_unbind_adapter_devices(hba);
1832         }
1833 }
1834
1835 /**
1836  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1837  *
1838  * @handle:     transport handle pointing to adapter structure
1839  *
1840  * Driver checks if adapter is already in shutdown mode, if not start
1841  *      the shutdown process.
1842  */
1843 static void bnx2fc_ulp_stop(void *handle)
1844 {
1845         struct bnx2fc_hba *hba = handle;
1846         struct bnx2fc_interface *interface;
1847
1848         printk(KERN_ERR "ULP_STOP\n");
1849
1850         mutex_lock(&bnx2fc_dev_lock);
1851         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1852                 goto exit;
1853         list_for_each_entry(interface, &if_list, list) {
1854                 if (interface->hba == hba)
1855                         bnx2fc_stop(interface);
1856         }
1857         BUG_ON(hba->num_ofld_sess != 0);
1858
1859         mutex_lock(&hba->hba_mutex);
1860         clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1861         clear_bit(ADAPTER_STATE_GOING_DOWN,
1862                   &hba->adapter_state);
1863
1864         clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1865         mutex_unlock(&hba->hba_mutex);
1866
1867         bnx2fc_fw_destroy(hba);
1868 exit:
1869         mutex_unlock(&bnx2fc_dev_lock);
1870 }
1871
1872 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1873 {
1874         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1875         struct fc_lport *lport;
1876         int wait_cnt = 0;
1877
1878         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1879         /* Kick off FIP/FLOGI */
1880         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1881                 printk(KERN_ERR PFX "Init not done yet\n");
1882                 return;
1883         }
1884
1885         lport = ctlr->lp;
1886         BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1887
1888         if (!bnx2fc_link_ok(lport) && interface->enabled) {
1889                 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1890                 fcoe_ctlr_link_up(ctlr);
1891                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1892                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1893         }
1894
1895         /* wait for the FCF to be selected before issuing FLOGI */
1896         while (!ctlr->sel_fcf) {
1897                 msleep(250);
1898                 /* give up after 3 secs */
1899                 if (++wait_cnt > 12)
1900                         break;
1901         }
1902
1903         /* Reset max receive frame size to default */
1904         if (fc_set_mfs(lport, BNX2FC_MFS))
1905                 return;
1906
1907         fc_lport_init(lport);
1908         fc_fabric_login(lport);
1909 }
1910
1911
1912 /**
1913  * bnx2fc_ulp_init - Initialize an adapter instance
1914  *
1915  * @dev :       cnic device handle
1916  * Called from cnic_register_driver() context to initialize all
1917  *      enumerated cnic devices. This routine allocates adapter structure
1918  *      and other device specific resources.
1919  */
1920 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1921 {
1922         struct bnx2fc_hba *hba;
1923         int rc = 0;
1924
1925         BNX2FC_MISC_DBG("Entered %s\n", __func__);
1926         /* bnx2fc works only when bnx2x is loaded */
1927         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1928             (dev->max_fcoe_conn == 0)) {
1929                 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1930                                     " flags: %lx fcoe_conn: %d\n",
1931                         dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1932                 return;
1933         }
1934
1935         hba = bnx2fc_hba_create(dev);
1936         if (!hba) {
1937                 printk(KERN_ERR PFX "hba initialization failed\n");
1938                 return;
1939         }
1940
1941         /* Add HBA to the adapter list */
1942         mutex_lock(&bnx2fc_dev_lock);
1943         list_add_tail(&hba->list, &adapter_list);
1944         adapter_count++;
1945         mutex_unlock(&bnx2fc_dev_lock);
1946
1947         clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1948         rc = dev->register_device(dev, CNIC_ULP_FCOE,
1949                                                 (void *) hba);
1950         if (rc)
1951                 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
1952         else
1953                 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1954 }
1955
1956
1957 static int bnx2fc_disable(struct net_device *netdev)
1958 {
1959         struct bnx2fc_interface *interface;
1960         struct fcoe_ctlr *ctlr;
1961         int rc = 0;
1962
1963         rtnl_lock();
1964         mutex_lock(&bnx2fc_dev_lock);
1965
1966         interface = bnx2fc_interface_lookup(netdev);
1967         ctlr = bnx2fc_to_ctlr(interface);
1968         if (!interface || !ctlr->lp) {
1969                 rc = -ENODEV;
1970                 printk(KERN_ERR PFX "bnx2fc_disable: interface or lport not found\n");
1971         } else {
1972                 interface->enabled = false;
1973                 fcoe_ctlr_link_down(ctlr);
1974                 fcoe_clean_pending_queue(ctlr->lp);
1975         }
1976
1977         mutex_unlock(&bnx2fc_dev_lock);
1978         rtnl_unlock();
1979         return rc;
1980 }
1981
1982
1983 static int bnx2fc_enable(struct net_device *netdev)
1984 {
1985         struct bnx2fc_interface *interface;
1986         struct fcoe_ctlr *ctlr;
1987         int rc = 0;
1988
1989         rtnl_lock();
1990         mutex_lock(&bnx2fc_dev_lock);
1991
1992         interface = bnx2fc_interface_lookup(netdev);
1993         ctlr = bnx2fc_to_ctlr(interface);
1994         if (!interface || !ctlr->lp) {
1995                 rc = -ENODEV;
1996                 printk(KERN_ERR PFX "bnx2fc_enable: interface or lport not found\n");
1997         } else if (!bnx2fc_link_ok(ctlr->lp)) {
1998                 fcoe_ctlr_link_up(ctlr);
1999                 interface->enabled = true;
2000         }
2001
2002         mutex_unlock(&bnx2fc_dev_lock);
2003         rtnl_unlock();
2004         return rc;
2005 }
2006
2007 /**
2008  * bnx2fc_create - Create bnx2fc FCoE interface
2009  *
2010  * @buffer: The name of Ethernet interface to create on
2011  * @kp:     The associated kernel param
2012  *
2013  * Called from sysfs.
2014  *
2015  * Returns: 0 for success
2016  */
2017 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2018 {
2019         struct fcoe_ctlr *ctlr;
2020         struct bnx2fc_interface *interface;
2021         struct bnx2fc_hba *hba;
2022         struct net_device *phys_dev;
2023         struct fc_lport *lport;
2024         struct ethtool_drvinfo drvinfo;
2025         int rc = 0;
2026         int vlan_id;
2027
2028         BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2029         if (fip_mode != FIP_MODE_FABRIC) {
2030                 printk(KERN_ERR "fip mode not FABRIC\n");
2031                 return -EIO;
2032         }
2033
2034         rtnl_lock();
2035
2036         mutex_lock(&bnx2fc_dev_lock);
2037
2038         if (!try_module_get(THIS_MODULE)) {
2039                 rc = -EINVAL;
2040                 goto mod_err;
2041         }
2042
2043         /* obtain physical netdev */
2044         if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2045                 phys_dev = vlan_dev_real_dev(netdev);
2046                 vlan_id = vlan_dev_vlan_id(netdev);
2047         } else {
2048                 printk(KERN_ERR PFX "Not a vlan device\n");
2049                 rc = -EINVAL;
2050                 goto netdev_err;
2051         }
2052         /* verify if the physical device is a netxtreme2 device */
2053         if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2054                 memset(&drvinfo, 0, sizeof(drvinfo));
2055                 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2056                 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2057                         printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2058                         rc = -EINVAL;
2059                         goto netdev_err;
2060                 }
2061         } else {
2062                 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2063                 rc = -EINVAL;
2064                 goto netdev_err;
2065         }
2066
2067         /* obtain interface and initialize rest of the structure */
2068         hba = bnx2fc_hba_lookup(phys_dev);
2069         if (!hba) {
2070                 rc = -ENODEV;
2071                 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2072                 goto netdev_err;
2073         }
2074
2075         if (bnx2fc_interface_lookup(netdev)) {
2076                 rc = -EEXIST;
2077                 goto netdev_err;
2078         }
2079
2080         interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2081         if (!interface) {
2082                 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2083                 goto ifput_err;
2084         }
2085
2086         ctlr = bnx2fc_to_ctlr(interface);
2087         interface->vlan_id = vlan_id;
2088         interface->vlan_enabled = 1;
2089
2090         interface->timer_work_queue =
2091                         create_singlethread_workqueue("bnx2fc_timer_wq");
2092         if (!interface->timer_work_queue) {
2093                 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2094                 rc = -EINVAL;
2095                 goto ifput_err;
2096         }
2097
2098         lport = bnx2fc_if_create(interface, &interface->hba->pcidev->dev, 0);
2099         if (!lport) {
2100                 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2101                         netdev->name);
2102                 rc = -EINVAL;
2103                 goto if_create_err;
2104         }
2105
2106         /* Add interface to if_list */
2107         list_add_tail(&interface->list, &if_list);
2108
2109         lport->boot_time = jiffies;
2110
2111         /* Make this master N_port */
2112         ctlr->lp = lport;
2113
2114         if (!bnx2fc_link_ok(lport)) {
2115                 fcoe_ctlr_link_up(ctlr);
2116                 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2117                 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2118         }
2119
2120         BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2121         bnx2fc_start_disc(interface);
2122         interface->enabled = true;
2123         /*
2124          * Release from kref_init in bnx2fc_interface_setup, on success
2125          * lport should be holding a reference taken in bnx2fc_if_create
2126          */
2127         bnx2fc_interface_put(interface);
2128         /* put netdev that was held while calling dev_get_by_name */
2129         mutex_unlock(&bnx2fc_dev_lock);
2130         rtnl_unlock();
2131         return 0;
2132
2133 if_create_err:
2134         destroy_workqueue(interface->timer_work_queue);
2135 ifput_err:
2136         bnx2fc_net_cleanup(interface);
2137         bnx2fc_interface_put(interface);
2138         goto mod_err;
2139 netdev_err:
2140         module_put(THIS_MODULE);
2141 mod_err:
2142         mutex_unlock(&bnx2fc_dev_lock);
2143         rtnl_unlock();
2144         return rc;
2145 }
2146
2147 /**
2148  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2149  *
2150  * @cnic:       Pointer to cnic device instance
2151  *
2152  **/
2153 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2154 {
2155         struct list_head *list;
2156         struct list_head *temp;
2157         struct bnx2fc_hba *hba;
2158
2159         /* Called with bnx2fc_dev_lock held */
2160         list_for_each_safe(list, temp, &adapter_list) {
2161                 hba = (struct bnx2fc_hba *)list;
2162                 if (hba->cnic == cnic)
2163                         return hba;
2164         }
2165         return NULL;
2166 }
2167
2168 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2169                                                         *netdev)
2170 {
2171         struct bnx2fc_interface *interface;
2172
2173         /* Called with bnx2fc_dev_lock held */
2174         list_for_each_entry(interface, &if_list, list) {
2175                 if (interface->netdev == netdev)
2176                         return interface;
2177         }
2178         return NULL;
2179 }
2180
2181 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2182                                                       *phys_dev)
2183 {
2184         struct bnx2fc_hba *hba;
2185
2186         /* Called with bnx2fc_dev_lock held */
2187         list_for_each_entry(hba, &adapter_list, list) {
2188                 if (hba->phys_dev == phys_dev)
2189                         return hba;
2190         }
2191         printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2192         return NULL;
2193 }
2194
2195 /**
2196  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2197  *
2198  * @dev         cnic device handle
2199  */
2200 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2201 {
2202         struct bnx2fc_hba *hba;
2203         struct bnx2fc_interface *interface, *tmp;
2204
2205         BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2206
2207         if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2208                 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2209                         dev->netdev->name, dev->flags);
2210                 return;
2211         }
2212
2213         mutex_lock(&bnx2fc_dev_lock);
2214         hba = bnx2fc_find_hba_for_cnic(dev);
2215         if (!hba) {
2216                 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2217                        dev);
2218                 mutex_unlock(&bnx2fc_dev_lock);
2219                 return;
2220         }
2221
2222         list_del_init(&hba->list);
2223         adapter_count--;
2224
2225         list_for_each_entry_safe(interface, tmp, &if_list, list)
2226                 /* destroy not called yet, move to quiesced list */
2227                 if (interface->hba == hba)
2228                         __bnx2fc_destroy(interface);
2229         mutex_unlock(&bnx2fc_dev_lock);
2230
2231         bnx2fc_ulp_stop(hba);
2232         /* unregister cnic device */
2233         if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2234                 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2235         bnx2fc_hba_destroy(hba);
2236 }
2237
2238 /**
2239  * bnx2fc_fcoe_reset - Resets the fcoe
2240  *
2241  * @shost: shost the reset is from
2242  *
2243  * Returns: always 0
2244  */
2245 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2246 {
2247         struct fc_lport *lport = shost_priv(shost);
2248         fc_lport_reset(lport);
2249         return 0;
2250 }
2251
2252
2253 static bool bnx2fc_match(struct net_device *netdev)
2254 {
2255         mutex_lock(&bnx2fc_dev_lock);
2256         if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2257                 struct net_device *phys_dev = vlan_dev_real_dev(netdev);
2258
2259                 if (bnx2fc_hba_lookup(phys_dev)) {
2260                         mutex_unlock(&bnx2fc_dev_lock);
2261                         return true;
2262                 }
2263         }
2264         mutex_unlock(&bnx2fc_dev_lock);
2265         return false;
2266 }
2267
2268
2269 static struct fcoe_transport bnx2fc_transport = {
2270         .name = {"bnx2fc"},
2271         .attached = false,
2272         .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2273         .match = bnx2fc_match,
2274         .create = bnx2fc_create,
2275         .destroy = bnx2fc_destroy,
2276         .enable = bnx2fc_enable,
2277         .disable = bnx2fc_disable,
2278 };
2279
2280 /**
2281  * bnx2fc_percpu_thread_create - Create a receive thread for an
2282  *                               online CPU
2283  *
2284  * @cpu: cpu index for the online cpu
2285  */
2286 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2287 {
2288         struct bnx2fc_percpu_s *p;
2289         struct task_struct *thread;
2290
2291         p = &per_cpu(bnx2fc_percpu, cpu);
2292
2293         thread = kthread_create(bnx2fc_percpu_io_thread,
2294                                 (void *)p,
2295                                 "bnx2fc_thread/%d", cpu);
2296         /* bind thread to the cpu */
2297         if (likely(!IS_ERR(thread))) {
2298                 kthread_bind(thread, cpu);
2299                 p->iothread = thread;
2300                 wake_up_process(thread);
2301         }
2302 }
2303
2304 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2305 {
2306         struct bnx2fc_percpu_s *p;
2307         struct task_struct *thread;
2308         struct bnx2fc_work *work, *tmp;
2309
2310         BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2311
2312         /* Prevent any new work from being queued for this CPU */
2313         p = &per_cpu(bnx2fc_percpu, cpu);
2314         spin_lock_bh(&p->fp_work_lock);
2315         thread = p->iothread;
2316         p->iothread = NULL;
2317
2318
2319         /* Free all work in the list */
2320         list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2321                 list_del_init(&work->list);
2322                 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2323                 kfree(work);
2324         }
2325
2326         spin_unlock_bh(&p->fp_work_lock);
2327
2328         if (thread)
2329                 kthread_stop(thread);
2330 }
2331
2332 /**
2333  * bnx2fc_cpu_callback - Handler for CPU hotplug events
2334  *
2335  * @nfb:    The callback data block
2336  * @action: The event triggering the callback
2337  * @hcpu:   The index of the CPU that the event is for
2338  *
2339  * This creates or destroys per-CPU data for fcoe
2340  *
2341  * Returns NOTIFY_OK always.
2342  */
2343 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2344                              unsigned long action, void *hcpu)
2345 {
2346         unsigned cpu = (unsigned long)hcpu;
2347
2348         switch (action) {
2349         case CPU_ONLINE:
2350         case CPU_ONLINE_FROZEN:
2351                 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2352                 bnx2fc_percpu_thread_create(cpu);
2353                 break;
2354         case CPU_DEAD:
2355         case CPU_DEAD_FROZEN:
2356                 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2357                 bnx2fc_percpu_thread_destroy(cpu);
2358                 break;
2359         default:
2360                 break;
2361         }
2362         return NOTIFY_OK;
2363 }
2364
2365 /**
2366  * bnx2fc_mod_init - module init entry point
2367  *
2368  * Initialize driver wide global data structures, and register
2369  * with cnic module
2370  **/
2371 static int __init bnx2fc_mod_init(void)
2372 {
2373         struct fcoe_percpu_s *bg;
2374         struct task_struct *l2_thread;
2375         int rc = 0;
2376         unsigned int cpu = 0;
2377         struct bnx2fc_percpu_s *p;
2378
2379         printk(KERN_INFO PFX "%s", version);
2380
2381         /* register as a fcoe transport */
2382         rc = fcoe_transport_attach(&bnx2fc_transport);
2383         if (rc) {
2384                 printk(KERN_ERR "failed to register an fcoe transport, check "
2385                         "if libfcoe is loaded\n");
2386                 goto out;
2387         }
2388
2389         INIT_LIST_HEAD(&adapter_list);
2390         INIT_LIST_HEAD(&if_list);
2391         mutex_init(&bnx2fc_dev_lock);
2392         adapter_count = 0;
2393
2394         /* Attach FC transport template */
2395         rc = bnx2fc_attach_transport();
2396         if (rc)
2397                 goto detach_ft;
2398
2399         bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2400         if (!bnx2fc_wq) {
2401                 rc = -ENOMEM;
2402                 goto release_bt;
2403         }
2404
2405         bg = &bnx2fc_global;
2406         skb_queue_head_init(&bg->fcoe_rx_list);
2407         l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2408                                    (void *)bg,
2409                                    "bnx2fc_l2_thread");
2410         if (IS_ERR(l2_thread)) {
2411                 rc = PTR_ERR(l2_thread);
2412                 goto free_wq;
2413         }
2414         wake_up_process(l2_thread);
2415         spin_lock_bh(&bg->fcoe_rx_list.lock);
2416         bg->thread = l2_thread;
2417         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2418
2419         for_each_possible_cpu(cpu) {
2420                 p = &per_cpu(bnx2fc_percpu, cpu);
2421                 INIT_LIST_HEAD(&p->work_list);
2422                 spin_lock_init(&p->fp_work_lock);
2423         }
2424
2425         for_each_online_cpu(cpu) {
2426                 bnx2fc_percpu_thread_create(cpu);
2427         }
2428
2429         /* Initialize per CPU interrupt thread */
2430         register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2431
2432         cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2433
2434         return 0;
2435
2436 free_wq:
2437         destroy_workqueue(bnx2fc_wq);
2438 release_bt:
2439         bnx2fc_release_transport();
2440 detach_ft:
2441         fcoe_transport_detach(&bnx2fc_transport);
2442 out:
2443         return rc;
2444 }
2445
2446 static void __exit bnx2fc_mod_exit(void)
2447 {
2448         LIST_HEAD(to_be_deleted);
2449         struct bnx2fc_hba *hba, *next;
2450         struct fcoe_percpu_s *bg;
2451         struct task_struct *l2_thread;
2452         struct sk_buff *skb;
2453         unsigned int cpu = 0;
2454
2455         /*
2456          * NOTE: Since cnic calls register_driver routine rtnl_lock,
2457          * it will have higher precedence than bnx2fc_dev_lock.
2458          * unregister_device() cannot be called with bnx2fc_dev_lock
2459          * held.
2460          */
2461         mutex_lock(&bnx2fc_dev_lock);
2462         list_splice(&adapter_list, &to_be_deleted);
2463         INIT_LIST_HEAD(&adapter_list);
2464         adapter_count = 0;
2465         mutex_unlock(&bnx2fc_dev_lock);
2466
2467         /* Unregister with cnic */
2468         list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2469                 list_del_init(&hba->list);
2470                 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2471                        hba);
2472                 bnx2fc_ulp_stop(hba);
2473                 /* unregister cnic device */
2474                 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2475                                        &hba->reg_with_cnic))
2476                         hba->cnic->unregister_device(hba->cnic,
2477                                                          CNIC_ULP_FCOE);
2478                 bnx2fc_hba_destroy(hba);
2479         }
2480         cnic_unregister_driver(CNIC_ULP_FCOE);
2481
2482         /* Destroy global thread */
2483         bg = &bnx2fc_global;
2484         spin_lock_bh(&bg->fcoe_rx_list.lock);
2485         l2_thread = bg->thread;
2486         bg->thread = NULL;
2487         while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2488                 kfree_skb(skb);
2489
2490         spin_unlock_bh(&bg->fcoe_rx_list.lock);
2491
2492         if (l2_thread)
2493                 kthread_stop(l2_thread);
2494
2495         unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2496
2497         /* Destroy per cpu threads */
2498         for_each_online_cpu(cpu) {
2499                 bnx2fc_percpu_thread_destroy(cpu);
2500         }
2501
2502         destroy_workqueue(bnx2fc_wq);
2503         /*
2504          * detach from scsi transport
2505          * must happen after all destroys are done
2506          */
2507         bnx2fc_release_transport();
2508
2509         /* detach from fcoe transport */
2510         fcoe_transport_detach(&bnx2fc_transport);
2511 }
2512
2513 module_init(bnx2fc_mod_init);
2514 module_exit(bnx2fc_mod_exit);
2515
2516 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2517         .get_fcoe_ctlr_mode = fcoe_ctlr_get_fip_mode,
2518         .get_fcoe_ctlr_link_fail = bnx2fc_ctlr_get_lesb,
2519         .get_fcoe_ctlr_vlink_fail = bnx2fc_ctlr_get_lesb,
2520         .get_fcoe_ctlr_miss_fka = bnx2fc_ctlr_get_lesb,
2521         .get_fcoe_ctlr_symb_err = bnx2fc_ctlr_get_lesb,
2522         .get_fcoe_ctlr_err_block = bnx2fc_ctlr_get_lesb,
2523         .get_fcoe_ctlr_fcs_error = bnx2fc_ctlr_get_lesb,
2524
2525         .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2526         .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2527 };
2528
2529 static struct fc_function_template bnx2fc_transport_function = {
2530         .show_host_node_name = 1,
2531         .show_host_port_name = 1,
2532         .show_host_supported_classes = 1,
2533         .show_host_supported_fc4s = 1,
2534         .show_host_active_fc4s = 1,
2535         .show_host_maxframe_size = 1,
2536
2537         .show_host_port_id = 1,
2538         .show_host_supported_speeds = 1,
2539         .get_host_speed = fc_get_host_speed,
2540         .show_host_speed = 1,
2541         .show_host_port_type = 1,
2542         .get_host_port_state = fc_get_host_port_state,
2543         .show_host_port_state = 1,
2544         .show_host_symbolic_name = 1,
2545
2546         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2547                                 sizeof(struct bnx2fc_rport)),
2548         .show_rport_maxframe_size = 1,
2549         .show_rport_supported_classes = 1,
2550
2551         .show_host_fabric_name = 1,
2552         .show_starget_node_name = 1,
2553         .show_starget_port_name = 1,
2554         .show_starget_port_id = 1,
2555         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2556         .show_rport_dev_loss_tmo = 1,
2557         .get_fc_host_stats = bnx2fc_get_host_stats,
2558
2559         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2560
2561         .terminate_rport_io = fc_rport_terminate_io,
2562
2563         .vport_create = bnx2fc_vport_create,
2564         .vport_delete = bnx2fc_vport_destroy,
2565         .vport_disable = bnx2fc_vport_disable,
2566         .bsg_request = fc_lport_bsg_request,
2567 };
2568
2569 static struct fc_function_template bnx2fc_vport_xport_function = {
2570         .show_host_node_name = 1,
2571         .show_host_port_name = 1,
2572         .show_host_supported_classes = 1,
2573         .show_host_supported_fc4s = 1,
2574         .show_host_active_fc4s = 1,
2575         .show_host_maxframe_size = 1,
2576
2577         .show_host_port_id = 1,
2578         .show_host_supported_speeds = 1,
2579         .get_host_speed = fc_get_host_speed,
2580         .show_host_speed = 1,
2581         .show_host_port_type = 1,
2582         .get_host_port_state = fc_get_host_port_state,
2583         .show_host_port_state = 1,
2584         .show_host_symbolic_name = 1,
2585
2586         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2587                                 sizeof(struct bnx2fc_rport)),
2588         .show_rport_maxframe_size = 1,
2589         .show_rport_supported_classes = 1,
2590
2591         .show_host_fabric_name = 1,
2592         .show_starget_node_name = 1,
2593         .show_starget_port_name = 1,
2594         .show_starget_port_id = 1,
2595         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2596         .show_rport_dev_loss_tmo = 1,
2597         .get_fc_host_stats = fc_get_host_stats,
2598         .issue_fc_host_lip = bnx2fc_fcoe_reset,
2599         .terminate_rport_io = fc_rport_terminate_io,
2600         .bsg_request = fc_lport_bsg_request,
2601 };
2602
2603 /**
2604  * scsi_host_template structure used while registering with SCSI-ml
2605  */
2606 static struct scsi_host_template bnx2fc_shost_template = {
2607         .module                 = THIS_MODULE,
2608         .name                   = "Broadcom Offload FCoE Initiator",
2609         .queuecommand           = bnx2fc_queuecommand,
2610         .eh_abort_handler       = bnx2fc_eh_abort,        /* abts */
2611         .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2612         .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2613         .eh_host_reset_handler  = fc_eh_host_reset,
2614         .slave_alloc            = fc_slave_alloc,
2615         .change_queue_depth     = fc_change_queue_depth,
2616         .change_queue_type      = fc_change_queue_type,
2617         .this_id                = -1,
2618         .cmd_per_lun            = 3,
2619         .can_queue              = BNX2FC_CAN_QUEUE,
2620         .use_clustering         = ENABLE_CLUSTERING,
2621         .sg_tablesize           = BNX2FC_MAX_BDS_PER_CMD,
2622         .max_sectors            = 512,
2623 };
2624
2625 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2626         .frame_send             = bnx2fc_xmit,
2627         .elsct_send             = bnx2fc_elsct_send,
2628         .fcp_abort_io           = bnx2fc_abort_io,
2629         .fcp_cleanup            = bnx2fc_cleanup,
2630         .get_lesb               = bnx2fc_get_lesb,
2631         .rport_event_callback   = bnx2fc_rport_event_handler,
2632 };
2633
2634 /**
2635  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2636  *                      structure carrying callback function pointers
2637  */
2638 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2639         .owner                  = THIS_MODULE,
2640         .cnic_init              = bnx2fc_ulp_init,
2641         .cnic_exit              = bnx2fc_ulp_exit,
2642         .cnic_start             = bnx2fc_ulp_start,
2643         .cnic_stop              = bnx2fc_ulp_stop,
2644         .indicate_kcqes         = bnx2fc_indicate_kcqe,
2645         .indicate_netevent      = bnx2fc_indicate_netevent,
2646 };