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 "Dec 21, 2012" 26 27 28 static char version[] = 29 "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \ 30 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; 31 32 33 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>"); 34 MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver"); 35 MODULE_LICENSE("GPL"); 36 MODULE_VERSION(DRV_MODULE_VERSION); 37 38 #define BNX2FC_MAX_QUEUE_DEPTH 256 39 #define BNX2FC_MIN_QUEUE_DEPTH 32 40 #define FCOE_WORD_TO_BYTE 4 41 42 static struct scsi_transport_template *bnx2fc_transport_template; 43 static struct scsi_transport_template *bnx2fc_vport_xport_template; 44 45 struct workqueue_struct *bnx2fc_wq; 46 47 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure. 48 * Here the io threads are per cpu but the l2 thread is just one 49 */ 50 struct fcoe_percpu_s bnx2fc_global; 51 DEFINE_SPINLOCK(bnx2fc_global_lock); 52 53 static struct cnic_ulp_ops bnx2fc_cnic_cb; 54 static struct libfc_function_template bnx2fc_libfc_fcn_templ; 55 static struct scsi_host_template bnx2fc_shost_template; 56 static struct fc_function_template bnx2fc_transport_function; 57 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ; 58 static struct fc_function_template bnx2fc_vport_xport_function; 59 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode); 60 static void __bnx2fc_destroy(struct bnx2fc_interface *interface); 61 static int bnx2fc_destroy(struct net_device *net_device); 62 static int bnx2fc_enable(struct net_device *netdev); 63 static int bnx2fc_disable(struct net_device *netdev); 64 65 /* fcoe_syfs control interface handlers */ 66 static int bnx2fc_ctlr_alloc(struct net_device *netdev); 67 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev); 68 69 static void bnx2fc_recv_frame(struct sk_buff *skb); 70 71 static void bnx2fc_start_disc(struct bnx2fc_interface *interface); 72 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev); 73 static int bnx2fc_lport_config(struct fc_lport *lport); 74 static int bnx2fc_em_config(struct fc_lport *lport); 75 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba); 76 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba); 77 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba); 78 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba); 79 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 80 struct device *parent, int npiv); 81 static void bnx2fc_destroy_work(struct work_struct *work); 82 83 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev); 84 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 85 *phys_dev); 86 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface); 87 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic); 88 89 static int bnx2fc_fw_init(struct bnx2fc_hba *hba); 90 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba); 91 92 static void bnx2fc_port_shutdown(struct fc_lport *lport); 93 static void bnx2fc_stop(struct bnx2fc_interface *interface); 94 static int __init bnx2fc_mod_init(void); 95 static void __exit bnx2fc_mod_exit(void); 96 97 unsigned int bnx2fc_debug_level; 98 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR); 99 100 static int bnx2fc_cpu_callback(struct notifier_block *nfb, 101 unsigned long action, void *hcpu); 102 /* notification function for CPU hotplug events */ 103 static struct notifier_block bnx2fc_cpu_notifier = { 104 .notifier_call = bnx2fc_cpu_callback, 105 }; 106 107 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport) 108 { 109 return ((struct bnx2fc_interface *) 110 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev; 111 } 112 113 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev) 114 { 115 struct fcoe_ctlr_device *ctlr_dev = 116 fcoe_fcf_dev_to_ctlr_dev(fcf_dev); 117 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); 118 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr); 119 120 fcf_dev->vlan_id = fcoe->vlan_id; 121 } 122 123 static void bnx2fc_clean_rx_queue(struct fc_lport *lp) 124 { 125 struct fcoe_percpu_s *bg; 126 struct fcoe_rcv_info *fr; 127 struct sk_buff_head *list; 128 struct sk_buff *skb, *next; 129 struct sk_buff *head; 130 131 bg = &bnx2fc_global; 132 spin_lock_bh(&bg->fcoe_rx_list.lock); 133 list = &bg->fcoe_rx_list; 134 head = list->next; 135 for (skb = head; skb != (struct sk_buff *)list; 136 skb = next) { 137 next = skb->next; 138 fr = fcoe_dev_from_skb(skb); 139 if (fr->fr_dev == lp) { 140 __skb_unlink(skb, list); 141 kfree_skb(skb); 142 } 143 } 144 spin_unlock_bh(&bg->fcoe_rx_list.lock); 145 } 146 147 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen) 148 { 149 int rc; 150 spin_lock(&bnx2fc_global_lock); 151 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global); 152 spin_unlock(&bnx2fc_global_lock); 153 154 return rc; 155 } 156 157 static void bnx2fc_abort_io(struct fc_lport *lport) 158 { 159 /* 160 * This function is no-op for bnx2fc, but we do 161 * not want to leave it as NULL either, as libfc 162 * can call the default function which is 163 * fc_fcp_abort_io. 164 */ 165 } 166 167 static void bnx2fc_cleanup(struct fc_lport *lport) 168 { 169 struct fcoe_port *port = lport_priv(lport); 170 struct bnx2fc_interface *interface = port->priv; 171 struct bnx2fc_hba *hba = interface->hba; 172 struct bnx2fc_rport *tgt; 173 int i; 174 175 BNX2FC_MISC_DBG("Entered %s\n", __func__); 176 mutex_lock(&hba->hba_mutex); 177 spin_lock_bh(&hba->hba_lock); 178 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) { 179 tgt = hba->tgt_ofld_list[i]; 180 if (tgt) { 181 /* Cleanup IOs belonging to requested vport */ 182 if (tgt->port == port) { 183 spin_unlock_bh(&hba->hba_lock); 184 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n"); 185 bnx2fc_flush_active_ios(tgt); 186 spin_lock_bh(&hba->hba_lock); 187 } 188 } 189 } 190 spin_unlock_bh(&hba->hba_lock); 191 mutex_unlock(&hba->hba_mutex); 192 } 193 194 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt, 195 struct fc_frame *fp) 196 { 197 struct fc_rport_priv *rdata = tgt->rdata; 198 struct fc_frame_header *fh; 199 int rc = 0; 200 201 fh = fc_frame_header_get(fp); 202 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, " 203 "r_ctl = 0x%x\n", rdata->ids.port_id, 204 ntohs(fh->fh_ox_id), fh->fh_r_ctl); 205 if ((fh->fh_type == FC_TYPE_ELS) && 206 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 207 208 switch (fc_frame_payload_op(fp)) { 209 case ELS_ADISC: 210 rc = bnx2fc_send_adisc(tgt, fp); 211 break; 212 case ELS_LOGO: 213 rc = bnx2fc_send_logo(tgt, fp); 214 break; 215 case ELS_RLS: 216 rc = bnx2fc_send_rls(tgt, fp); 217 break; 218 default: 219 break; 220 } 221 } else if ((fh->fh_type == FC_TYPE_BLS) && 222 (fh->fh_r_ctl == FC_RCTL_BA_ABTS)) 223 BNX2FC_TGT_DBG(tgt, "ABTS frame\n"); 224 else { 225 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x " 226 "rctl 0x%x thru non-offload path\n", 227 fh->fh_type, fh->fh_r_ctl); 228 return -ENODEV; 229 } 230 if (rc) 231 return -ENOMEM; 232 else 233 return 0; 234 } 235 236 /** 237 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function 238 * 239 * @lport: the associated local port 240 * @fp: the fc_frame to be transmitted 241 */ 242 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp) 243 { 244 struct ethhdr *eh; 245 struct fcoe_crc_eof *cp; 246 struct sk_buff *skb; 247 struct fc_frame_header *fh; 248 struct bnx2fc_interface *interface; 249 struct fcoe_ctlr *ctlr; 250 struct bnx2fc_hba *hba; 251 struct fcoe_port *port; 252 struct fcoe_hdr *hp; 253 struct bnx2fc_rport *tgt; 254 struct fc_stats *stats; 255 u8 sof, eof; 256 u32 crc; 257 unsigned int hlen, tlen, elen; 258 int wlen, rc = 0; 259 260 port = (struct fcoe_port *)lport_priv(lport); 261 interface = port->priv; 262 ctlr = bnx2fc_to_ctlr(interface); 263 hba = interface->hba; 264 265 fh = fc_frame_header_get(fp); 266 267 skb = fp_skb(fp); 268 if (!lport->link_up) { 269 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n"); 270 kfree_skb(skb); 271 return 0; 272 } 273 274 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 275 if (!ctlr->sel_fcf) { 276 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n"); 277 kfree_skb(skb); 278 return -EINVAL; 279 } 280 if (fcoe_ctlr_els_send(ctlr, lport, skb)) 281 return 0; 282 } 283 284 sof = fr_sof(fp); 285 eof = fr_eof(fp); 286 287 /* 288 * Snoop the frame header to check if the frame is for 289 * an offloaded session 290 */ 291 /* 292 * tgt_ofld_list access is synchronized using 293 * both hba mutex and hba lock. Atleast hba mutex or 294 * hba lock needs to be held for read access. 295 */ 296 297 spin_lock_bh(&hba->hba_lock); 298 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id)); 299 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) { 300 /* This frame is for offloaded session */ 301 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session " 302 "port_id = 0x%x\n", ntoh24(fh->fh_d_id)); 303 spin_unlock_bh(&hba->hba_lock); 304 rc = bnx2fc_xmit_l2_frame(tgt, fp); 305 if (rc != -ENODEV) { 306 kfree_skb(skb); 307 return rc; 308 } 309 } else { 310 spin_unlock_bh(&hba->hba_lock); 311 } 312 313 elen = sizeof(struct ethhdr); 314 hlen = sizeof(struct fcoe_hdr); 315 tlen = sizeof(struct fcoe_crc_eof); 316 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 317 318 skb->ip_summed = CHECKSUM_NONE; 319 crc = fcoe_fc_crc(fp); 320 321 /* copy port crc and eof to the skb buff */ 322 if (skb_is_nonlinear(skb)) { 323 skb_frag_t *frag; 324 if (bnx2fc_get_paged_crc_eof(skb, tlen)) { 325 kfree_skb(skb); 326 return -ENOMEM; 327 } 328 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 329 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; 330 } else { 331 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); 332 } 333 334 memset(cp, 0, sizeof(*cp)); 335 cp->fcoe_eof = eof; 336 cp->fcoe_crc32 = cpu_to_le32(~crc); 337 if (skb_is_nonlinear(skb)) { 338 kunmap_atomic(cp); 339 cp = NULL; 340 } 341 342 /* adjust skb network/transport offsets to match mac/fcoe/port */ 343 skb_push(skb, elen + hlen); 344 skb_reset_mac_header(skb); 345 skb_reset_network_header(skb); 346 skb->mac_len = elen; 347 skb->protocol = htons(ETH_P_FCOE); 348 skb->dev = interface->netdev; 349 350 /* fill up mac and fcoe headers */ 351 eh = eth_hdr(skb); 352 eh->h_proto = htons(ETH_P_FCOE); 353 if (ctlr->map_dest) 354 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 355 else 356 /* insert GW address */ 357 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); 358 359 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) 360 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); 361 else 362 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); 363 364 hp = (struct fcoe_hdr *)(eh + 1); 365 memset(hp, 0, sizeof(*hp)); 366 if (FC_FCOE_VER) 367 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 368 hp->fcoe_sof = sof; 369 370 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ 371 if (lport->seq_offload && fr_max_payload(fp)) { 372 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; 373 skb_shinfo(skb)->gso_size = fr_max_payload(fp); 374 } else { 375 skb_shinfo(skb)->gso_type = 0; 376 skb_shinfo(skb)->gso_size = 0; 377 } 378 379 /*update tx stats */ 380 stats = per_cpu_ptr(lport->stats, get_cpu()); 381 stats->TxFrames++; 382 stats->TxWords += wlen; 383 put_cpu(); 384 385 /* send down to lld */ 386 fr_dev(fp) = lport; 387 if (port->fcoe_pending_queue.qlen) 388 fcoe_check_wait_queue(lport, skb); 389 else if (fcoe_start_io(skb)) 390 fcoe_check_wait_queue(lport, skb); 391 392 return 0; 393 } 394 395 /** 396 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ 397 * 398 * @skb: the receive socket buffer 399 * @dev: associated net device 400 * @ptype: context 401 * @olddev: last device 402 * 403 * This function receives the packet and builds FC frame and passes it up 404 */ 405 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev, 406 struct packet_type *ptype, struct net_device *olddev) 407 { 408 struct fc_lport *lport; 409 struct bnx2fc_interface *interface; 410 struct fcoe_ctlr *ctlr; 411 struct fc_frame_header *fh; 412 struct fcoe_rcv_info *fr; 413 struct fcoe_percpu_s *bg; 414 unsigned short oxid; 415 416 interface = container_of(ptype, struct bnx2fc_interface, 417 fcoe_packet_type); 418 ctlr = bnx2fc_to_ctlr(interface); 419 lport = ctlr->lp; 420 421 if (unlikely(lport == NULL)) { 422 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n"); 423 goto err; 424 } 425 426 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { 427 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n"); 428 goto err; 429 } 430 431 /* 432 * Check for minimum frame length, and make sure required FCoE 433 * and FC headers are pulled into the linear data area. 434 */ 435 if (unlikely((skb->len < FCOE_MIN_FRAME) || 436 !pskb_may_pull(skb, FCOE_HEADER_LEN))) 437 goto err; 438 439 skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); 440 fh = (struct fc_frame_header *) skb_transport_header(skb); 441 442 oxid = ntohs(fh->fh_ox_id); 443 444 fr = fcoe_dev_from_skb(skb); 445 fr->fr_dev = lport; 446 447 bg = &bnx2fc_global; 448 spin_lock(&bg->fcoe_rx_list.lock); 449 450 __skb_queue_tail(&bg->fcoe_rx_list, skb); 451 if (bg->fcoe_rx_list.qlen == 1) 452 wake_up_process(bg->thread); 453 454 spin_unlock(&bg->fcoe_rx_list.lock); 455 456 return 0; 457 err: 458 kfree_skb(skb); 459 return -1; 460 } 461 462 static int bnx2fc_l2_rcv_thread(void *arg) 463 { 464 struct fcoe_percpu_s *bg = arg; 465 struct sk_buff *skb; 466 467 set_user_nice(current, -20); 468 set_current_state(TASK_INTERRUPTIBLE); 469 while (!kthread_should_stop()) { 470 schedule(); 471 spin_lock_bh(&bg->fcoe_rx_list.lock); 472 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { 473 spin_unlock_bh(&bg->fcoe_rx_list.lock); 474 bnx2fc_recv_frame(skb); 475 spin_lock_bh(&bg->fcoe_rx_list.lock); 476 } 477 __set_current_state(TASK_INTERRUPTIBLE); 478 spin_unlock_bh(&bg->fcoe_rx_list.lock); 479 } 480 __set_current_state(TASK_RUNNING); 481 return 0; 482 } 483 484 485 static void bnx2fc_recv_frame(struct sk_buff *skb) 486 { 487 u32 fr_len; 488 struct fc_lport *lport; 489 struct fcoe_rcv_info *fr; 490 struct fc_stats *stats; 491 struct fc_frame_header *fh; 492 struct fcoe_crc_eof crc_eof; 493 struct fc_frame *fp; 494 struct fc_lport *vn_port; 495 struct fcoe_port *port; 496 u8 *mac = NULL; 497 u8 *dest_mac = NULL; 498 struct fcoe_hdr *hp; 499 500 fr = fcoe_dev_from_skb(skb); 501 lport = fr->fr_dev; 502 if (unlikely(lport == NULL)) { 503 printk(KERN_ERR PFX "Invalid lport struct\n"); 504 kfree_skb(skb); 505 return; 506 } 507 508 if (skb_is_nonlinear(skb)) 509 skb_linearize(skb); 510 mac = eth_hdr(skb)->h_source; 511 dest_mac = eth_hdr(skb)->h_dest; 512 513 /* Pull the header */ 514 hp = (struct fcoe_hdr *) skb_network_header(skb); 515 fh = (struct fc_frame_header *) skb_transport_header(skb); 516 skb_pull(skb, sizeof(struct fcoe_hdr)); 517 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 518 519 stats = per_cpu_ptr(lport->stats, get_cpu()); 520 stats->RxFrames++; 521 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; 522 523 fp = (struct fc_frame *)skb; 524 fc_frame_init(fp); 525 fr_dev(fp) = lport; 526 fr_sof(fp) = hp->fcoe_sof; 527 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 528 put_cpu(); 529 kfree_skb(skb); 530 return; 531 } 532 fr_eof(fp) = crc_eof.fcoe_eof; 533 fr_crc(fp) = crc_eof.fcoe_crc32; 534 if (pskb_trim(skb, fr_len)) { 535 put_cpu(); 536 kfree_skb(skb); 537 return; 538 } 539 540 fh = fc_frame_header_get(fp); 541 542 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 543 if (vn_port) { 544 port = lport_priv(vn_port); 545 if (compare_ether_addr(port->data_src_addr, dest_mac) 546 != 0) { 547 BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); 548 put_cpu(); 549 kfree_skb(skb); 550 return; 551 } 552 } 553 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 554 fh->fh_type == FC_TYPE_FCP) { 555 /* Drop FCP data. We dont this in L2 path */ 556 put_cpu(); 557 kfree_skb(skb); 558 return; 559 } 560 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 561 fh->fh_type == FC_TYPE_ELS) { 562 switch (fc_frame_payload_op(fp)) { 563 case ELS_LOGO: 564 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 565 /* drop non-FIP LOGO */ 566 put_cpu(); 567 kfree_skb(skb); 568 return; 569 } 570 break; 571 } 572 } 573 574 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 575 /* Drop incoming ABTS */ 576 put_cpu(); 577 kfree_skb(skb); 578 return; 579 } 580 581 if (le32_to_cpu(fr_crc(fp)) != 582 ~crc32(~0, skb->data, fr_len)) { 583 if (stats->InvalidCRCCount < 5) 584 printk(KERN_WARNING PFX "dropping frame with " 585 "CRC error\n"); 586 stats->InvalidCRCCount++; 587 put_cpu(); 588 kfree_skb(skb); 589 return; 590 } 591 put_cpu(); 592 fc_exch_recv(lport, fp); 593 } 594 595 /** 596 * bnx2fc_percpu_io_thread - thread per cpu for ios 597 * 598 * @arg: ptr to bnx2fc_percpu_info structure 599 */ 600 int bnx2fc_percpu_io_thread(void *arg) 601 { 602 struct bnx2fc_percpu_s *p = arg; 603 struct bnx2fc_work *work, *tmp; 604 LIST_HEAD(work_list); 605 606 set_user_nice(current, -20); 607 set_current_state(TASK_INTERRUPTIBLE); 608 while (!kthread_should_stop()) { 609 schedule(); 610 spin_lock_bh(&p->fp_work_lock); 611 while (!list_empty(&p->work_list)) { 612 list_splice_init(&p->work_list, &work_list); 613 spin_unlock_bh(&p->fp_work_lock); 614 615 list_for_each_entry_safe(work, tmp, &work_list, list) { 616 list_del_init(&work->list); 617 bnx2fc_process_cq_compl(work->tgt, work->wqe); 618 kfree(work); 619 } 620 621 spin_lock_bh(&p->fp_work_lock); 622 } 623 __set_current_state(TASK_INTERRUPTIBLE); 624 spin_unlock_bh(&p->fp_work_lock); 625 } 626 __set_current_state(TASK_RUNNING); 627 628 return 0; 629 } 630 631 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) 632 { 633 struct fc_host_statistics *bnx2fc_stats; 634 struct fc_lport *lport = shost_priv(shost); 635 struct fcoe_port *port = lport_priv(lport); 636 struct bnx2fc_interface *interface = port->priv; 637 struct bnx2fc_hba *hba = interface->hba; 638 struct fcoe_statistics_params *fw_stats; 639 int rc = 0; 640 641 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; 642 if (!fw_stats) 643 return NULL; 644 645 bnx2fc_stats = fc_get_host_stats(shost); 646 647 init_completion(&hba->stat_req_done); 648 if (bnx2fc_send_stat_req(hba)) 649 return bnx2fc_stats; 650 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); 651 if (!rc) { 652 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); 653 return bnx2fc_stats; 654 } 655 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); 656 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; 657 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); 658 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; 659 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); 660 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); 661 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); 662 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; 663 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); 664 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); 665 666 bnx2fc_stats->dumped_frames = 0; 667 bnx2fc_stats->lip_count = 0; 668 bnx2fc_stats->nos_count = 0; 669 bnx2fc_stats->loss_of_sync_count = 0; 670 bnx2fc_stats->loss_of_signal_count = 0; 671 bnx2fc_stats->prim_seq_protocol_err_count = 0; 672 673 memcpy(&hba->prev_stats, hba->stats_buffer, 674 sizeof(struct fcoe_statistics_params)); 675 return bnx2fc_stats; 676 } 677 678 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) 679 { 680 struct fcoe_port *port = lport_priv(lport); 681 struct bnx2fc_interface *interface = port->priv; 682 struct Scsi_Host *shost = lport->host; 683 int rc = 0; 684 685 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; 686 shost->max_lun = BNX2FC_MAX_LUN; 687 shost->max_id = BNX2FC_MAX_FCP_TGT; 688 shost->max_channel = 0; 689 if (lport->vport) 690 shost->transportt = bnx2fc_vport_xport_template; 691 else 692 shost->transportt = bnx2fc_transport_template; 693 694 /* Add the new host to SCSI-ml */ 695 rc = scsi_add_host(lport->host, dev); 696 if (rc) { 697 printk(KERN_ERR PFX "Error on scsi_add_host\n"); 698 return rc; 699 } 700 if (!lport->vport) 701 fc_host_max_npiv_vports(lport->host) = USHRT_MAX; 702 sprintf(fc_host_symbolic_name(lport->host), "%s v%s over %s", 703 BNX2FC_NAME, BNX2FC_VERSION, 704 interface->netdev->name); 705 706 return 0; 707 } 708 709 static int bnx2fc_link_ok(struct fc_lport *lport) 710 { 711 struct fcoe_port *port = lport_priv(lport); 712 struct bnx2fc_interface *interface = port->priv; 713 struct bnx2fc_hba *hba = interface->hba; 714 struct net_device *dev = hba->phys_dev; 715 int rc = 0; 716 717 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) 718 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 719 else { 720 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 721 rc = -1; 722 } 723 return rc; 724 } 725 726 /** 727 * bnx2fc_get_link_state - get network link state 728 * 729 * @hba: adapter instance pointer 730 * 731 * updates adapter structure flag based on netdev state 732 */ 733 void bnx2fc_get_link_state(struct bnx2fc_hba *hba) 734 { 735 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) 736 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 737 else 738 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 739 } 740 741 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) 742 { 743 struct bnx2fc_hba *hba; 744 struct bnx2fc_interface *interface; 745 struct fcoe_ctlr *ctlr; 746 struct fcoe_port *port; 747 u64 wwnn, wwpn; 748 749 port = lport_priv(lport); 750 interface = port->priv; 751 ctlr = bnx2fc_to_ctlr(interface); 752 hba = interface->hba; 753 754 /* require support for get_pauseparam ethtool op. */ 755 if (!hba->phys_dev->ethtool_ops || 756 !hba->phys_dev->ethtool_ops->get_pauseparam) 757 return -EOPNOTSUPP; 758 759 if (fc_set_mfs(lport, BNX2FC_MFS)) 760 return -EINVAL; 761 762 skb_queue_head_init(&port->fcoe_pending_queue); 763 port->fcoe_pending_queue_active = 0; 764 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport); 765 766 fcoe_link_speed_update(lport); 767 768 if (!lport->vport) { 769 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) 770 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 771 1, 0); 772 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); 773 fc_set_wwnn(lport, wwnn); 774 775 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) 776 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 777 2, 0); 778 779 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); 780 fc_set_wwpn(lport, wwpn); 781 } 782 783 return 0; 784 } 785 786 static void bnx2fc_destroy_timer(unsigned long data) 787 { 788 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data; 789 790 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " 791 "Destroy compl not received!!\n"); 792 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 793 wake_up_interruptible(&hba->destroy_wait); 794 } 795 796 /** 797 * bnx2fc_indicate_netevent - Generic netdev event handler 798 * 799 * @context: adapter structure pointer 800 * @event: event type 801 * @vlan_id: vlan id - associated vlan id with this event 802 * 803 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and 804 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. 805 */ 806 static void bnx2fc_indicate_netevent(void *context, unsigned long event, 807 u16 vlan_id) 808 { 809 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; 810 struct fcoe_ctlr_device *cdev; 811 struct fc_lport *lport; 812 struct fc_lport *vport; 813 struct bnx2fc_interface *interface, *tmp; 814 struct fcoe_ctlr *ctlr; 815 int wait_for_upload = 0; 816 u32 link_possible = 1; 817 818 if (vlan_id != 0 && event != NETDEV_UNREGISTER) 819 return; 820 821 switch (event) { 822 case NETDEV_UP: 823 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 824 printk(KERN_ERR "indicate_netevent: "\ 825 "hba is not UP!!\n"); 826 break; 827 828 case NETDEV_DOWN: 829 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 830 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 831 link_possible = 0; 832 break; 833 834 case NETDEV_GOING_DOWN: 835 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 836 link_possible = 0; 837 break; 838 839 case NETDEV_CHANGE: 840 break; 841 842 case NETDEV_UNREGISTER: 843 if (!vlan_id) 844 return; 845 mutex_lock(&bnx2fc_dev_lock); 846 list_for_each_entry_safe(interface, tmp, &if_list, list) { 847 if (interface->hba == hba && 848 interface->vlan_id == (vlan_id & VLAN_VID_MASK)) 849 __bnx2fc_destroy(interface); 850 } 851 mutex_unlock(&bnx2fc_dev_lock); 852 return; 853 854 default: 855 printk(KERN_ERR PFX "Unknown netevent %ld", event); 856 return; 857 } 858 859 mutex_lock(&bnx2fc_dev_lock); 860 list_for_each_entry(interface, &if_list, list) { 861 862 if (interface->hba != hba) 863 continue; 864 865 ctlr = bnx2fc_to_ctlr(interface); 866 lport = ctlr->lp; 867 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", 868 interface->netdev->name, event); 869 870 fcoe_link_speed_update(lport); 871 872 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 873 874 if (link_possible && !bnx2fc_link_ok(lport)) { 875 switch (cdev->enabled) { 876 case FCOE_CTLR_DISABLED: 877 pr_info("Link up while interface is disabled.\n"); 878 break; 879 case FCOE_CTLR_ENABLED: 880 case FCOE_CTLR_UNUSED: 881 /* Reset max recv frame size to default */ 882 fc_set_mfs(lport, BNX2FC_MFS); 883 /* 884 * ctlr link up will only be handled during 885 * enable to avoid sending discovery 886 * solicitation on a stale vlan 887 */ 888 if (interface->enabled) 889 fcoe_ctlr_link_up(ctlr); 890 }; 891 } else if (fcoe_ctlr_link_down(ctlr)) { 892 switch (cdev->enabled) { 893 case FCOE_CTLR_DISABLED: 894 pr_info("Link down while interface is disabled.\n"); 895 break; 896 case FCOE_CTLR_ENABLED: 897 case FCOE_CTLR_UNUSED: 898 mutex_lock(&lport->lp_mutex); 899 list_for_each_entry(vport, &lport->vports, list) 900 fc_host_port_type(vport->host) = 901 FC_PORTTYPE_UNKNOWN; 902 mutex_unlock(&lport->lp_mutex); 903 fc_host_port_type(lport->host) = 904 FC_PORTTYPE_UNKNOWN; 905 per_cpu_ptr(lport->stats, 906 get_cpu())->LinkFailureCount++; 907 put_cpu(); 908 fcoe_clean_pending_queue(lport); 909 wait_for_upload = 1; 910 }; 911 } 912 } 913 mutex_unlock(&bnx2fc_dev_lock); 914 915 if (wait_for_upload) { 916 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 917 init_waitqueue_head(&hba->shutdown_wait); 918 BNX2FC_MISC_DBG("indicate_netevent " 919 "num_ofld_sess = %d\n", 920 hba->num_ofld_sess); 921 hba->wait_for_link_down = 1; 922 wait_event_interruptible(hba->shutdown_wait, 923 (hba->num_ofld_sess == 0)); 924 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", 925 hba->num_ofld_sess); 926 hba->wait_for_link_down = 0; 927 928 if (signal_pending(current)) 929 flush_signals(current); 930 } 931 } 932 933 static int bnx2fc_libfc_config(struct fc_lport *lport) 934 { 935 936 /* Set the function pointers set by bnx2fc driver */ 937 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, 938 sizeof(struct libfc_function_template)); 939 fc_elsct_init(lport); 940 fc_exch_init(lport); 941 fc_rport_init(lport); 942 fc_disc_init(lport); 943 return 0; 944 } 945 946 static int bnx2fc_em_config(struct fc_lport *lport) 947 { 948 int max_xid; 949 950 if (nr_cpu_ids <= 2) 951 max_xid = FCOE_XIDS_PER_CPU; 952 else 953 max_xid = FCOE_MAX_XID; 954 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID, 955 max_xid, NULL)) { 956 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); 957 return -ENOMEM; 958 } 959 960 return 0; 961 } 962 963 static int bnx2fc_lport_config(struct fc_lport *lport) 964 { 965 lport->link_up = 0; 966 lport->qfull = 0; 967 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; 968 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; 969 lport->e_d_tov = 2 * 1000; 970 lport->r_a_tov = 10 * 1000; 971 972 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 973 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 974 lport->does_npiv = 1; 975 976 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); 977 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; 978 979 /* alloc stats structure */ 980 if (fc_lport_init_stats(lport)) 981 return -ENOMEM; 982 983 /* Finish fc_lport configuration */ 984 fc_lport_config(lport); 985 986 return 0; 987 } 988 989 /** 990 * bnx2fc_fip_recv - handle a received FIP frame. 991 * 992 * @skb: the received skb 993 * @dev: associated &net_device 994 * @ptype: the &packet_type structure which was used to register this handler. 995 * @orig_dev: original receive &net_device, in case @ dev is a bond. 996 * 997 * Returns: 0 for success 998 */ 999 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, 1000 struct packet_type *ptype, 1001 struct net_device *orig_dev) 1002 { 1003 struct bnx2fc_interface *interface; 1004 struct fcoe_ctlr *ctlr; 1005 interface = container_of(ptype, struct bnx2fc_interface, 1006 fip_packet_type); 1007 ctlr = bnx2fc_to_ctlr(interface); 1008 fcoe_ctlr_recv(ctlr, skb); 1009 return 0; 1010 } 1011 1012 /** 1013 * bnx2fc_update_src_mac - Update Ethernet MAC filters. 1014 * 1015 * @fip: FCoE controller. 1016 * @old: Unicast MAC address to delete if the MAC is non-zero. 1017 * @new: Unicast MAC address to add. 1018 * 1019 * Remove any previously-set unicast MAC filter. 1020 * Add secondary FCoE MAC address filter for our OUI. 1021 */ 1022 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) 1023 { 1024 struct fcoe_port *port = lport_priv(lport); 1025 1026 memcpy(port->data_src_addr, addr, ETH_ALEN); 1027 } 1028 1029 /** 1030 * bnx2fc_get_src_mac - return the ethernet source address for an lport 1031 * 1032 * @lport: libfc port 1033 */ 1034 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) 1035 { 1036 struct fcoe_port *port; 1037 1038 port = (struct fcoe_port *)lport_priv(lport); 1039 return port->data_src_addr; 1040 } 1041 1042 /** 1043 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. 1044 * 1045 * @fip: FCoE controller. 1046 * @skb: FIP Packet. 1047 */ 1048 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 1049 { 1050 skb->dev = bnx2fc_from_ctlr(fip)->netdev; 1051 dev_queue_xmit(skb); 1052 } 1053 1054 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) 1055 { 1056 struct Scsi_Host *shost = vport_to_shost(vport); 1057 struct fc_lport *n_port = shost_priv(shost); 1058 struct fcoe_port *port = lport_priv(n_port); 1059 struct bnx2fc_interface *interface = port->priv; 1060 struct net_device *netdev = interface->netdev; 1061 struct fc_lport *vn_port; 1062 int rc; 1063 char buf[32]; 1064 1065 rc = fcoe_validate_vport_create(vport); 1066 if (rc) { 1067 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1068 printk(KERN_ERR PFX "Failed to create vport, " 1069 "WWPN (0x%s) already exists\n", 1070 buf); 1071 return rc; 1072 } 1073 1074 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1075 printk(KERN_ERR PFX "vn ports cannot be created on" 1076 "this interface\n"); 1077 return -EIO; 1078 } 1079 rtnl_lock(); 1080 mutex_lock(&bnx2fc_dev_lock); 1081 vn_port = bnx2fc_if_create(interface, &vport->dev, 1); 1082 mutex_unlock(&bnx2fc_dev_lock); 1083 rtnl_unlock(); 1084 1085 if (IS_ERR(vn_port)) { 1086 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", 1087 netdev->name); 1088 return -EIO; 1089 } 1090 1091 if (disabled) { 1092 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1093 } else { 1094 vn_port->boot_time = jiffies; 1095 fc_lport_init(vn_port); 1096 fc_fabric_login(vn_port); 1097 fc_vport_setlink(vn_port); 1098 } 1099 return 0; 1100 } 1101 1102 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) 1103 { 1104 struct bnx2fc_lport *blport, *tmp; 1105 1106 spin_lock_bh(&hba->hba_lock); 1107 list_for_each_entry_safe(blport, tmp, &hba->vports, list) { 1108 if (blport->lport == lport) { 1109 list_del(&blport->list); 1110 kfree(blport); 1111 } 1112 } 1113 spin_unlock_bh(&hba->hba_lock); 1114 } 1115 1116 static int bnx2fc_vport_destroy(struct fc_vport *vport) 1117 { 1118 struct Scsi_Host *shost = vport_to_shost(vport); 1119 struct fc_lport *n_port = shost_priv(shost); 1120 struct fc_lport *vn_port = vport->dd_data; 1121 struct fcoe_port *port = lport_priv(vn_port); 1122 struct bnx2fc_interface *interface = port->priv; 1123 struct fc_lport *v_port; 1124 bool found = false; 1125 1126 mutex_lock(&n_port->lp_mutex); 1127 list_for_each_entry(v_port, &n_port->vports, list) 1128 if (v_port->vport == vport) { 1129 found = true; 1130 break; 1131 } 1132 1133 if (!found) { 1134 mutex_unlock(&n_port->lp_mutex); 1135 return -ENOENT; 1136 } 1137 list_del(&vn_port->list); 1138 mutex_unlock(&n_port->lp_mutex); 1139 bnx2fc_free_vport(interface->hba, port->lport); 1140 bnx2fc_port_shutdown(port->lport); 1141 bnx2fc_interface_put(interface); 1142 queue_work(bnx2fc_wq, &port->destroy_work); 1143 return 0; 1144 } 1145 1146 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) 1147 { 1148 struct fc_lport *lport = vport->dd_data; 1149 1150 if (disable) { 1151 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1152 fc_fabric_logoff(lport); 1153 } else { 1154 lport->boot_time = jiffies; 1155 fc_fabric_login(lport); 1156 fc_vport_setlink(lport); 1157 } 1158 return 0; 1159 } 1160 1161 1162 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) 1163 { 1164 struct net_device *netdev = interface->netdev; 1165 struct net_device *physdev = interface->hba->phys_dev; 1166 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1167 struct netdev_hw_addr *ha; 1168 int sel_san_mac = 0; 1169 1170 /* setup Source MAC Address */ 1171 rcu_read_lock(); 1172 for_each_dev_addr(physdev, ha) { 1173 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", 1174 ha->type); 1175 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], 1176 ha->addr[1], ha->addr[2], ha->addr[3], 1177 ha->addr[4], ha->addr[5]); 1178 1179 if ((ha->type == NETDEV_HW_ADDR_T_SAN) && 1180 (is_valid_ether_addr(ha->addr))) { 1181 memcpy(ctlr->ctl_src_addr, ha->addr, 1182 ETH_ALEN); 1183 sel_san_mac = 1; 1184 BNX2FC_MISC_DBG("Found SAN MAC\n"); 1185 } 1186 } 1187 rcu_read_unlock(); 1188 1189 if (!sel_san_mac) 1190 return -ENODEV; 1191 1192 interface->fip_packet_type.func = bnx2fc_fip_recv; 1193 interface->fip_packet_type.type = htons(ETH_P_FIP); 1194 interface->fip_packet_type.dev = netdev; 1195 dev_add_pack(&interface->fip_packet_type); 1196 1197 interface->fcoe_packet_type.func = bnx2fc_rcv; 1198 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); 1199 interface->fcoe_packet_type.dev = netdev; 1200 dev_add_pack(&interface->fcoe_packet_type); 1201 1202 return 0; 1203 } 1204 1205 static int bnx2fc_attach_transport(void) 1206 { 1207 bnx2fc_transport_template = 1208 fc_attach_transport(&bnx2fc_transport_function); 1209 1210 if (bnx2fc_transport_template == NULL) { 1211 printk(KERN_ERR PFX "Failed to attach FC transport\n"); 1212 return -ENODEV; 1213 } 1214 1215 bnx2fc_vport_xport_template = 1216 fc_attach_transport(&bnx2fc_vport_xport_function); 1217 if (bnx2fc_vport_xport_template == NULL) { 1218 printk(KERN_ERR PFX 1219 "Failed to attach FC transport for vport\n"); 1220 fc_release_transport(bnx2fc_transport_template); 1221 bnx2fc_transport_template = NULL; 1222 return -ENODEV; 1223 } 1224 return 0; 1225 } 1226 static void bnx2fc_release_transport(void) 1227 { 1228 fc_release_transport(bnx2fc_transport_template); 1229 fc_release_transport(bnx2fc_vport_xport_template); 1230 bnx2fc_transport_template = NULL; 1231 bnx2fc_vport_xport_template = NULL; 1232 } 1233 1234 static void bnx2fc_interface_release(struct kref *kref) 1235 { 1236 struct fcoe_ctlr_device *ctlr_dev; 1237 struct bnx2fc_interface *interface; 1238 struct fcoe_ctlr *ctlr; 1239 struct net_device *netdev; 1240 1241 interface = container_of(kref, struct bnx2fc_interface, kref); 1242 BNX2FC_MISC_DBG("Interface is being released\n"); 1243 1244 ctlr = bnx2fc_to_ctlr(interface); 1245 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); 1246 netdev = interface->netdev; 1247 1248 /* tear-down FIP controller */ 1249 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) 1250 fcoe_ctlr_destroy(ctlr); 1251 1252 fcoe_ctlr_device_delete(ctlr_dev); 1253 1254 dev_put(netdev); 1255 module_put(THIS_MODULE); 1256 } 1257 1258 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) 1259 { 1260 kref_get(&interface->kref); 1261 } 1262 1263 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) 1264 { 1265 kref_put(&interface->kref, bnx2fc_interface_release); 1266 } 1267 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) 1268 { 1269 /* Free the command manager */ 1270 if (hba->cmd_mgr) { 1271 bnx2fc_cmd_mgr_free(hba->cmd_mgr); 1272 hba->cmd_mgr = NULL; 1273 } 1274 kfree(hba->tgt_ofld_list); 1275 bnx2fc_unbind_pcidev(hba); 1276 kfree(hba); 1277 } 1278 1279 /** 1280 * bnx2fc_hba_create - create a new bnx2fc hba 1281 * 1282 * @cnic: pointer to cnic device 1283 * 1284 * Creates a new FCoE hba on the given device. 1285 * 1286 */ 1287 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) 1288 { 1289 struct bnx2fc_hba *hba; 1290 struct fcoe_capabilities *fcoe_cap; 1291 int rc; 1292 1293 hba = kzalloc(sizeof(*hba), GFP_KERNEL); 1294 if (!hba) { 1295 printk(KERN_ERR PFX "Unable to allocate hba structure\n"); 1296 return NULL; 1297 } 1298 spin_lock_init(&hba->hba_lock); 1299 mutex_init(&hba->hba_mutex); 1300 1301 hba->cnic = cnic; 1302 rc = bnx2fc_bind_pcidev(hba); 1303 if (rc) { 1304 printk(KERN_ERR PFX "create_adapter: bind error\n"); 1305 goto bind_err; 1306 } 1307 hba->phys_dev = cnic->netdev; 1308 hba->next_conn_id = 0; 1309 1310 hba->tgt_ofld_list = 1311 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS, 1312 GFP_KERNEL); 1313 if (!hba->tgt_ofld_list) { 1314 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); 1315 goto tgtofld_err; 1316 } 1317 1318 hba->num_ofld_sess = 0; 1319 1320 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID, 1321 BNX2FC_MAX_XID); 1322 if (!hba->cmd_mgr) { 1323 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); 1324 goto cmgr_err; 1325 } 1326 fcoe_cap = &hba->fcoe_cap; 1327 1328 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << 1329 FCOE_IOS_PER_CONNECTION_SHIFT; 1330 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << 1331 FCOE_LOGINS_PER_PORT_SHIFT; 1332 fcoe_cap->capability2 = BNX2FC_MAX_OUTSTANDING_CMNDS << 1333 FCOE_NUMBER_OF_EXCHANGES_SHIFT; 1334 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << 1335 FCOE_NPIV_WWN_PER_PORT_SHIFT; 1336 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << 1337 FCOE_TARGETS_SUPPORTED_SHIFT; 1338 fcoe_cap->capability3 |= BNX2FC_MAX_OUTSTANDING_CMNDS << 1339 FCOE_OUTSTANDING_COMMANDS_SHIFT; 1340 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; 1341 1342 init_waitqueue_head(&hba->shutdown_wait); 1343 init_waitqueue_head(&hba->destroy_wait); 1344 INIT_LIST_HEAD(&hba->vports); 1345 1346 return hba; 1347 1348 cmgr_err: 1349 kfree(hba->tgt_ofld_list); 1350 tgtofld_err: 1351 bnx2fc_unbind_pcidev(hba); 1352 bind_err: 1353 kfree(hba); 1354 return NULL; 1355 } 1356 1357 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba, 1358 struct net_device *netdev, 1359 enum fip_state fip_mode) 1360 { 1361 struct fcoe_ctlr_device *ctlr_dev; 1362 struct bnx2fc_interface *interface; 1363 struct fcoe_ctlr *ctlr; 1364 int size; 1365 int rc = 0; 1366 1367 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); 1368 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, 1369 size); 1370 if (!ctlr_dev) { 1371 printk(KERN_ERR PFX "Unable to allocate interface structure\n"); 1372 return NULL; 1373 } 1374 ctlr = fcoe_ctlr_device_priv(ctlr_dev); 1375 interface = fcoe_ctlr_priv(ctlr); 1376 dev_hold(netdev); 1377 kref_init(&interface->kref); 1378 interface->hba = hba; 1379 interface->netdev = netdev; 1380 1381 /* Initialize FIP */ 1382 fcoe_ctlr_init(ctlr, fip_mode); 1383 ctlr->send = bnx2fc_fip_send; 1384 ctlr->update_mac = bnx2fc_update_src_mac; 1385 ctlr->get_src_addr = bnx2fc_get_src_mac; 1386 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); 1387 1388 rc = bnx2fc_interface_setup(interface); 1389 if (!rc) 1390 return interface; 1391 1392 fcoe_ctlr_destroy(ctlr); 1393 dev_put(netdev); 1394 fcoe_ctlr_device_delete(ctlr_dev); 1395 return NULL; 1396 } 1397 1398 /** 1399 * bnx2fc_if_create - Create FCoE instance on a given interface 1400 * 1401 * @interface: FCoE interface to create a local port on 1402 * @parent: Device pointer to be the parent in sysfs for the SCSI host 1403 * @npiv: Indicates if the port is vport or not 1404 * 1405 * Creates a fc_lport instance and a Scsi_Host instance and configure them. 1406 * 1407 * Returns: Allocated fc_lport or an error pointer 1408 */ 1409 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 1410 struct device *parent, int npiv) 1411 { 1412 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1413 struct fc_lport *lport, *n_port; 1414 struct fcoe_port *port; 1415 struct Scsi_Host *shost; 1416 struct fc_vport *vport = dev_to_vport(parent); 1417 struct bnx2fc_lport *blport; 1418 struct bnx2fc_hba *hba; 1419 int rc = 0; 1420 1421 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); 1422 if (!blport) { 1423 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); 1424 return NULL; 1425 } 1426 1427 /* Allocate Scsi_Host structure */ 1428 if (!npiv) 1429 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); 1430 else 1431 lport = libfc_vport_create(vport, sizeof(*port)); 1432 1433 if (!lport) { 1434 printk(KERN_ERR PFX "could not allocate scsi host structure\n"); 1435 goto free_blport; 1436 } 1437 shost = lport->host; 1438 port = lport_priv(lport); 1439 port->lport = lport; 1440 port->priv = interface; 1441 port->get_netdev = bnx2fc_netdev; 1442 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work); 1443 1444 /* Configure fcoe_port */ 1445 rc = bnx2fc_lport_config(lport); 1446 if (rc) 1447 goto lp_config_err; 1448 1449 if (npiv) { 1450 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", 1451 vport->node_name, vport->port_name); 1452 fc_set_wwnn(lport, vport->node_name); 1453 fc_set_wwpn(lport, vport->port_name); 1454 } 1455 /* Configure netdev and networking properties of the lport */ 1456 rc = bnx2fc_net_config(lport, interface->netdev); 1457 if (rc) { 1458 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); 1459 goto lp_config_err; 1460 } 1461 1462 rc = bnx2fc_shost_config(lport, parent); 1463 if (rc) { 1464 printk(KERN_ERR PFX "Couldnt configure shost for %s\n", 1465 interface->netdev->name); 1466 goto lp_config_err; 1467 } 1468 1469 /* Initialize the libfc library */ 1470 rc = bnx2fc_libfc_config(lport); 1471 if (rc) { 1472 printk(KERN_ERR PFX "Couldnt configure libfc\n"); 1473 goto shost_err; 1474 } 1475 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1476 1477 /* Allocate exchange manager */ 1478 if (!npiv) 1479 rc = bnx2fc_em_config(lport); 1480 else { 1481 shost = vport_to_shost(vport); 1482 n_port = shost_priv(shost); 1483 rc = fc_exch_mgr_list_clone(n_port, lport); 1484 } 1485 1486 if (rc) { 1487 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); 1488 goto shost_err; 1489 } 1490 1491 bnx2fc_interface_get(interface); 1492 1493 hba = interface->hba; 1494 spin_lock_bh(&hba->hba_lock); 1495 blport->lport = lport; 1496 list_add_tail(&blport->list, &hba->vports); 1497 spin_unlock_bh(&hba->hba_lock); 1498 1499 return lport; 1500 1501 shost_err: 1502 scsi_remove_host(shost); 1503 lp_config_err: 1504 scsi_host_put(lport->host); 1505 free_blport: 1506 kfree(blport); 1507 return NULL; 1508 } 1509 1510 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) 1511 { 1512 /* Dont listen for Ethernet packets anymore */ 1513 __dev_remove_pack(&interface->fcoe_packet_type); 1514 __dev_remove_pack(&interface->fip_packet_type); 1515 synchronize_net(); 1516 } 1517 1518 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) 1519 { 1520 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1521 struct fc_lport *lport = ctlr->lp; 1522 struct fcoe_port *port = lport_priv(lport); 1523 struct bnx2fc_hba *hba = interface->hba; 1524 1525 /* Stop the transmit retry timer */ 1526 del_timer_sync(&port->timer); 1527 1528 /* Free existing transmit skbs */ 1529 fcoe_clean_pending_queue(lport); 1530 1531 bnx2fc_net_cleanup(interface); 1532 1533 bnx2fc_free_vport(hba, lport); 1534 } 1535 1536 static void bnx2fc_if_destroy(struct fc_lport *lport) 1537 { 1538 1539 /* Free queued packets for the receive thread */ 1540 bnx2fc_clean_rx_queue(lport); 1541 1542 /* Detach from scsi-ml */ 1543 fc_remove_host(lport->host); 1544 scsi_remove_host(lport->host); 1545 1546 /* 1547 * Note that only the physical lport will have the exchange manager. 1548 * for vports, this function is NOP 1549 */ 1550 fc_exch_mgr_free(lport); 1551 1552 /* Free memory used by statistical counters */ 1553 fc_lport_free_stats(lport); 1554 1555 /* Release Scsi_Host */ 1556 scsi_host_put(lport->host); 1557 } 1558 1559 static void __bnx2fc_destroy(struct bnx2fc_interface *interface) 1560 { 1561 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1562 struct fc_lport *lport = ctlr->lp; 1563 struct fcoe_port *port = lport_priv(lport); 1564 1565 bnx2fc_interface_cleanup(interface); 1566 bnx2fc_stop(interface); 1567 list_del(&interface->list); 1568 bnx2fc_interface_put(interface); 1569 queue_work(bnx2fc_wq, &port->destroy_work); 1570 } 1571 1572 /** 1573 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface 1574 * 1575 * @buffer: The name of the Ethernet interface to be destroyed 1576 * @kp: The associated kernel parameter 1577 * 1578 * Called from sysfs. 1579 * 1580 * Returns: 0 for success 1581 */ 1582 static int bnx2fc_destroy(struct net_device *netdev) 1583 { 1584 struct bnx2fc_interface *interface = NULL; 1585 struct workqueue_struct *timer_work_queue; 1586 struct fcoe_ctlr *ctlr; 1587 int rc = 0; 1588 1589 rtnl_lock(); 1590 mutex_lock(&bnx2fc_dev_lock); 1591 1592 interface = bnx2fc_interface_lookup(netdev); 1593 ctlr = bnx2fc_to_ctlr(interface); 1594 if (!interface || !ctlr->lp) { 1595 rc = -ENODEV; 1596 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); 1597 goto netdev_err; 1598 } 1599 1600 timer_work_queue = interface->timer_work_queue; 1601 __bnx2fc_destroy(interface); 1602 destroy_workqueue(timer_work_queue); 1603 1604 netdev_err: 1605 mutex_unlock(&bnx2fc_dev_lock); 1606 rtnl_unlock(); 1607 return rc; 1608 } 1609 1610 static void bnx2fc_destroy_work(struct work_struct *work) 1611 { 1612 struct fcoe_port *port; 1613 struct fc_lport *lport; 1614 1615 port = container_of(work, struct fcoe_port, destroy_work); 1616 lport = port->lport; 1617 1618 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n"); 1619 1620 bnx2fc_if_destroy(lport); 1621 } 1622 1623 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) 1624 { 1625 bnx2fc_free_fw_resc(hba); 1626 bnx2fc_free_task_ctx(hba); 1627 } 1628 1629 /** 1630 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated 1631 * pci structure 1632 * 1633 * @hba: Adapter instance 1634 */ 1635 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) 1636 { 1637 if (bnx2fc_setup_task_ctx(hba)) 1638 goto mem_err; 1639 1640 if (bnx2fc_setup_fw_resc(hba)) 1641 goto mem_err; 1642 1643 return 0; 1644 mem_err: 1645 bnx2fc_unbind_adapter_devices(hba); 1646 return -ENOMEM; 1647 } 1648 1649 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) 1650 { 1651 struct cnic_dev *cnic; 1652 1653 if (!hba->cnic) { 1654 printk(KERN_ERR PFX "cnic is NULL\n"); 1655 return -ENODEV; 1656 } 1657 cnic = hba->cnic; 1658 hba->pcidev = cnic->pcidev; 1659 if (hba->pcidev) 1660 pci_dev_get(hba->pcidev); 1661 1662 return 0; 1663 } 1664 1665 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) 1666 { 1667 if (hba->pcidev) 1668 pci_dev_put(hba->pcidev); 1669 hba->pcidev = NULL; 1670 } 1671 1672 /** 1673 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats 1674 * 1675 * @handle: transport handle pointing to adapter struture 1676 */ 1677 static int bnx2fc_ulp_get_stats(void *handle) 1678 { 1679 struct bnx2fc_hba *hba = handle; 1680 struct cnic_dev *cnic; 1681 struct fcoe_stats_info *stats_addr; 1682 1683 if (!hba) 1684 return -EINVAL; 1685 1686 cnic = hba->cnic; 1687 stats_addr = &cnic->stats_addr->fcoe_stat; 1688 if (!stats_addr) 1689 return -EINVAL; 1690 1691 strncpy(stats_addr->version, BNX2FC_VERSION, 1692 sizeof(stats_addr->version)); 1693 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX; 1694 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX; 1695 1696 return 0; 1697 } 1698 1699 1700 /** 1701 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance 1702 * 1703 * @handle: transport handle pointing to adapter structure 1704 * 1705 * This function maps adapter structure to pcidev structure and initiates 1706 * firmware handshake to enable/initialize on-chip FCoE components. 1707 * This bnx2fc - cnic interface api callback is used after following 1708 * conditions are met - 1709 * a) underlying network interface is up (marked by event NETDEV_UP 1710 * from netdev 1711 * b) bnx2fc adatper structure is registered. 1712 */ 1713 static void bnx2fc_ulp_start(void *handle) 1714 { 1715 struct bnx2fc_hba *hba = handle; 1716 struct bnx2fc_interface *interface; 1717 struct fcoe_ctlr *ctlr; 1718 struct fc_lport *lport; 1719 1720 mutex_lock(&bnx2fc_dev_lock); 1721 1722 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1723 bnx2fc_fw_init(hba); 1724 1725 BNX2FC_MISC_DBG("bnx2fc started.\n"); 1726 1727 list_for_each_entry(interface, &if_list, list) { 1728 if (interface->hba == hba) { 1729 ctlr = bnx2fc_to_ctlr(interface); 1730 lport = ctlr->lp; 1731 /* Kick off Fabric discovery*/ 1732 printk(KERN_ERR PFX "ulp_init: start discovery\n"); 1733 lport->tt.frame_send = bnx2fc_xmit; 1734 bnx2fc_start_disc(interface); 1735 } 1736 } 1737 1738 mutex_unlock(&bnx2fc_dev_lock); 1739 } 1740 1741 static void bnx2fc_port_shutdown(struct fc_lport *lport) 1742 { 1743 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1744 fc_fabric_logoff(lport); 1745 fc_lport_destroy(lport); 1746 } 1747 1748 static void bnx2fc_stop(struct bnx2fc_interface *interface) 1749 { 1750 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1751 struct fc_lport *lport; 1752 struct fc_lport *vport; 1753 1754 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) 1755 return; 1756 1757 lport = ctlr->lp; 1758 bnx2fc_port_shutdown(lport); 1759 1760 mutex_lock(&lport->lp_mutex); 1761 list_for_each_entry(vport, &lport->vports, list) 1762 fc_host_port_type(vport->host) = 1763 FC_PORTTYPE_UNKNOWN; 1764 mutex_unlock(&lport->lp_mutex); 1765 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1766 fcoe_ctlr_link_down(ctlr); 1767 fcoe_clean_pending_queue(lport); 1768 } 1769 1770 static int bnx2fc_fw_init(struct bnx2fc_hba *hba) 1771 { 1772 #define BNX2FC_INIT_POLL_TIME (1000 / HZ) 1773 int rc = -1; 1774 int i = HZ; 1775 1776 rc = bnx2fc_bind_adapter_devices(hba); 1777 if (rc) { 1778 printk(KERN_ALERT PFX 1779 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); 1780 goto err_out; 1781 } 1782 1783 rc = bnx2fc_send_fw_fcoe_init_msg(hba); 1784 if (rc) { 1785 printk(KERN_ALERT PFX 1786 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); 1787 goto err_unbind; 1788 } 1789 1790 /* 1791 * Wait until the adapter init message is complete, and adapter 1792 * state is UP. 1793 */ 1794 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) 1795 msleep(BNX2FC_INIT_POLL_TIME); 1796 1797 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { 1798 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " 1799 "Ignoring...\n", 1800 hba->cnic->netdev->name); 1801 rc = -1; 1802 goto err_unbind; 1803 } 1804 1805 1806 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); 1807 return 0; 1808 1809 err_unbind: 1810 bnx2fc_unbind_adapter_devices(hba); 1811 err_out: 1812 return rc; 1813 } 1814 1815 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) 1816 { 1817 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { 1818 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { 1819 init_timer(&hba->destroy_timer); 1820 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + 1821 jiffies; 1822 hba->destroy_timer.function = bnx2fc_destroy_timer; 1823 hba->destroy_timer.data = (unsigned long)hba; 1824 add_timer(&hba->destroy_timer); 1825 wait_event_interruptible(hba->destroy_wait, 1826 test_bit(BNX2FC_FLAG_DESTROY_CMPL, 1827 &hba->flags)); 1828 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 1829 /* This should never happen */ 1830 if (signal_pending(current)) 1831 flush_signals(current); 1832 1833 del_timer_sync(&hba->destroy_timer); 1834 } 1835 bnx2fc_unbind_adapter_devices(hba); 1836 } 1837 } 1838 1839 /** 1840 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance 1841 * 1842 * @handle: transport handle pointing to adapter structure 1843 * 1844 * Driver checks if adapter is already in shutdown mode, if not start 1845 * the shutdown process. 1846 */ 1847 static void bnx2fc_ulp_stop(void *handle) 1848 { 1849 struct bnx2fc_hba *hba = handle; 1850 struct bnx2fc_interface *interface; 1851 1852 printk(KERN_ERR "ULP_STOP\n"); 1853 1854 mutex_lock(&bnx2fc_dev_lock); 1855 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1856 goto exit; 1857 list_for_each_entry(interface, &if_list, list) { 1858 if (interface->hba == hba) 1859 bnx2fc_stop(interface); 1860 } 1861 BUG_ON(hba->num_ofld_sess != 0); 1862 1863 mutex_lock(&hba->hba_mutex); 1864 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 1865 clear_bit(ADAPTER_STATE_GOING_DOWN, 1866 &hba->adapter_state); 1867 1868 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 1869 mutex_unlock(&hba->hba_mutex); 1870 1871 bnx2fc_fw_destroy(hba); 1872 exit: 1873 mutex_unlock(&bnx2fc_dev_lock); 1874 } 1875 1876 static void bnx2fc_start_disc(struct bnx2fc_interface *interface) 1877 { 1878 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1879 struct fc_lport *lport; 1880 int wait_cnt = 0; 1881 1882 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1883 /* Kick off FIP/FLOGI */ 1884 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1885 printk(KERN_ERR PFX "Init not done yet\n"); 1886 return; 1887 } 1888 1889 lport = ctlr->lp; 1890 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); 1891 1892 if (!bnx2fc_link_ok(lport) && interface->enabled) { 1893 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); 1894 fcoe_ctlr_link_up(ctlr); 1895 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 1896 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 1897 } 1898 1899 /* wait for the FCF to be selected before issuing FLOGI */ 1900 while (!ctlr->sel_fcf) { 1901 msleep(250); 1902 /* give up after 3 secs */ 1903 if (++wait_cnt > 12) 1904 break; 1905 } 1906 1907 /* Reset max receive frame size to default */ 1908 if (fc_set_mfs(lport, BNX2FC_MFS)) 1909 return; 1910 1911 fc_lport_init(lport); 1912 fc_fabric_login(lport); 1913 } 1914 1915 1916 /** 1917 * bnx2fc_ulp_init - Initialize an adapter instance 1918 * 1919 * @dev : cnic device handle 1920 * Called from cnic_register_driver() context to initialize all 1921 * enumerated cnic devices. This routine allocates adapter structure 1922 * and other device specific resources. 1923 */ 1924 static void bnx2fc_ulp_init(struct cnic_dev *dev) 1925 { 1926 struct bnx2fc_hba *hba; 1927 int rc = 0; 1928 1929 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1930 /* bnx2fc works only when bnx2x is loaded */ 1931 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || 1932 (dev->max_fcoe_conn == 0)) { 1933 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," 1934 " flags: %lx fcoe_conn: %d\n", 1935 dev->netdev->name, dev->flags, dev->max_fcoe_conn); 1936 return; 1937 } 1938 1939 hba = bnx2fc_hba_create(dev); 1940 if (!hba) { 1941 printk(KERN_ERR PFX "hba initialization failed\n"); 1942 return; 1943 } 1944 1945 /* Add HBA to the adapter list */ 1946 mutex_lock(&bnx2fc_dev_lock); 1947 list_add_tail(&hba->list, &adapter_list); 1948 adapter_count++; 1949 mutex_unlock(&bnx2fc_dev_lock); 1950 1951 dev->fcoe_cap = &hba->fcoe_cap; 1952 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 1953 rc = dev->register_device(dev, CNIC_ULP_FCOE, 1954 (void *) hba); 1955 if (rc) 1956 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); 1957 else 1958 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 1959 } 1960 1961 /** 1962 * Deperecated: Use bnx2fc_enabled() 1963 */ 1964 static int bnx2fc_disable(struct net_device *netdev) 1965 { 1966 struct bnx2fc_interface *interface; 1967 struct fcoe_ctlr *ctlr; 1968 int rc = 0; 1969 1970 rtnl_lock(); 1971 mutex_lock(&bnx2fc_dev_lock); 1972 1973 interface = bnx2fc_interface_lookup(netdev); 1974 ctlr = bnx2fc_to_ctlr(interface); 1975 if (!interface || !ctlr->lp) { 1976 rc = -ENODEV; 1977 printk(KERN_ERR PFX "bnx2fc_disable: interface or lport not found\n"); 1978 } else { 1979 interface->enabled = false; 1980 fcoe_ctlr_link_down(ctlr); 1981 fcoe_clean_pending_queue(ctlr->lp); 1982 } 1983 1984 mutex_unlock(&bnx2fc_dev_lock); 1985 rtnl_unlock(); 1986 return rc; 1987 } 1988 1989 /** 1990 * Deprecated: Use bnx2fc_enabled() 1991 */ 1992 static int bnx2fc_enable(struct net_device *netdev) 1993 { 1994 struct bnx2fc_interface *interface; 1995 struct fcoe_ctlr *ctlr; 1996 int rc = 0; 1997 1998 rtnl_lock(); 1999 mutex_lock(&bnx2fc_dev_lock); 2000 2001 interface = bnx2fc_interface_lookup(netdev); 2002 ctlr = bnx2fc_to_ctlr(interface); 2003 if (!interface || !ctlr->lp) { 2004 rc = -ENODEV; 2005 printk(KERN_ERR PFX "bnx2fc_enable: interface or lport not found\n"); 2006 } else if (!bnx2fc_link_ok(ctlr->lp)) { 2007 fcoe_ctlr_link_up(ctlr); 2008 interface->enabled = true; 2009 } 2010 2011 mutex_unlock(&bnx2fc_dev_lock); 2012 rtnl_unlock(); 2013 return rc; 2014 } 2015 2016 /** 2017 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller 2018 * @cdev: The FCoE Controller that is being enabled or disabled 2019 * 2020 * fcoe_sysfs will ensure that the state of 'enabled' has 2021 * changed, so no checking is necessary here. This routine simply 2022 * calls fcoe_enable or fcoe_disable, both of which are deprecated. 2023 * When those routines are removed the functionality can be merged 2024 * here. 2025 */ 2026 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev) 2027 { 2028 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); 2029 struct fc_lport *lport = ctlr->lp; 2030 struct net_device *netdev = bnx2fc_netdev(lport); 2031 2032 switch (cdev->enabled) { 2033 case FCOE_CTLR_ENABLED: 2034 return bnx2fc_enable(netdev); 2035 case FCOE_CTLR_DISABLED: 2036 return bnx2fc_disable(netdev); 2037 case FCOE_CTLR_UNUSED: 2038 default: 2039 return -ENOTSUPP; 2040 }; 2041 } 2042 2043 enum bnx2fc_create_link_state { 2044 BNX2FC_CREATE_LINK_DOWN, 2045 BNX2FC_CREATE_LINK_UP, 2046 }; 2047 2048 /** 2049 * _bnx2fc_create() - Create bnx2fc FCoE interface 2050 * @netdev : The net_device object the Ethernet interface to create on 2051 * @fip_mode: The FIP mode for this creation 2052 * @link_state: The ctlr link state on creation 2053 * 2054 * Called from either the libfcoe 'create' module parameter 2055 * via fcoe_create or from fcoe_syfs's ctlr_create file. 2056 * 2057 * libfcoe's 'create' module parameter is deprecated so some 2058 * consolidation of code can be done when that interface is 2059 * removed. 2060 * 2061 * Returns: 0 for success 2062 */ 2063 static int _bnx2fc_create(struct net_device *netdev, 2064 enum fip_state fip_mode, 2065 enum bnx2fc_create_link_state link_state) 2066 { 2067 struct fcoe_ctlr_device *cdev; 2068 struct fcoe_ctlr *ctlr; 2069 struct bnx2fc_interface *interface; 2070 struct bnx2fc_hba *hba; 2071 struct net_device *phys_dev = netdev; 2072 struct fc_lport *lport; 2073 struct ethtool_drvinfo drvinfo; 2074 int rc = 0; 2075 int vlan_id = 0; 2076 2077 BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); 2078 if (fip_mode != FIP_MODE_FABRIC) { 2079 printk(KERN_ERR "fip mode not FABRIC\n"); 2080 return -EIO; 2081 } 2082 2083 rtnl_lock(); 2084 2085 mutex_lock(&bnx2fc_dev_lock); 2086 2087 if (!try_module_get(THIS_MODULE)) { 2088 rc = -EINVAL; 2089 goto mod_err; 2090 } 2091 2092 /* obtain physical netdev */ 2093 if (netdev->priv_flags & IFF_802_1Q_VLAN) 2094 phys_dev = vlan_dev_real_dev(netdev); 2095 2096 /* verify if the physical device is a netxtreme2 device */ 2097 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { 2098 memset(&drvinfo, 0, sizeof(drvinfo)); 2099 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); 2100 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { 2101 printk(KERN_ERR PFX "Not a netxtreme2 device\n"); 2102 rc = -EINVAL; 2103 goto netdev_err; 2104 } 2105 } else { 2106 printk(KERN_ERR PFX "unable to obtain drv_info\n"); 2107 rc = -EINVAL; 2108 goto netdev_err; 2109 } 2110 2111 /* obtain interface and initialize rest of the structure */ 2112 hba = bnx2fc_hba_lookup(phys_dev); 2113 if (!hba) { 2114 rc = -ENODEV; 2115 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); 2116 goto netdev_err; 2117 } 2118 2119 if (bnx2fc_interface_lookup(netdev)) { 2120 rc = -EEXIST; 2121 goto netdev_err; 2122 } 2123 2124 interface = bnx2fc_interface_create(hba, netdev, fip_mode); 2125 if (!interface) { 2126 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); 2127 goto ifput_err; 2128 } 2129 2130 if (netdev->priv_flags & IFF_802_1Q_VLAN) { 2131 vlan_id = vlan_dev_vlan_id(netdev); 2132 interface->vlan_enabled = 1; 2133 } 2134 2135 ctlr = bnx2fc_to_ctlr(interface); 2136 interface->vlan_id = vlan_id; 2137 2138 interface->timer_work_queue = 2139 create_singlethread_workqueue("bnx2fc_timer_wq"); 2140 if (!interface->timer_work_queue) { 2141 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); 2142 rc = -EINVAL; 2143 goto ifput_err; 2144 } 2145 2146 lport = bnx2fc_if_create(interface, &interface->hba->pcidev->dev, 0); 2147 if (!lport) { 2148 printk(KERN_ERR PFX "Failed to create interface (%s)\n", 2149 netdev->name); 2150 rc = -EINVAL; 2151 goto if_create_err; 2152 } 2153 2154 /* Add interface to if_list */ 2155 list_add_tail(&interface->list, &if_list); 2156 2157 lport->boot_time = jiffies; 2158 2159 /* Make this master N_port */ 2160 ctlr->lp = lport; 2161 2162 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 2163 2164 if (link_state == BNX2FC_CREATE_LINK_UP) 2165 cdev->enabled = FCOE_CTLR_ENABLED; 2166 else 2167 cdev->enabled = FCOE_CTLR_DISABLED; 2168 2169 if (link_state == BNX2FC_CREATE_LINK_UP && 2170 !bnx2fc_link_ok(lport)) { 2171 fcoe_ctlr_link_up(ctlr); 2172 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2173 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2174 } 2175 2176 BNX2FC_HBA_DBG(lport, "create: START DISC\n"); 2177 bnx2fc_start_disc(interface); 2178 2179 if (link_state == BNX2FC_CREATE_LINK_UP) 2180 interface->enabled = true; 2181 2182 /* 2183 * Release from kref_init in bnx2fc_interface_setup, on success 2184 * lport should be holding a reference taken in bnx2fc_if_create 2185 */ 2186 bnx2fc_interface_put(interface); 2187 /* put netdev that was held while calling dev_get_by_name */ 2188 mutex_unlock(&bnx2fc_dev_lock); 2189 rtnl_unlock(); 2190 return 0; 2191 2192 if_create_err: 2193 destroy_workqueue(interface->timer_work_queue); 2194 ifput_err: 2195 bnx2fc_net_cleanup(interface); 2196 bnx2fc_interface_put(interface); 2197 goto mod_err; 2198 netdev_err: 2199 module_put(THIS_MODULE); 2200 mod_err: 2201 mutex_unlock(&bnx2fc_dev_lock); 2202 rtnl_unlock(); 2203 return rc; 2204 } 2205 2206 /** 2207 * bnx2fc_create() - Create a bnx2fc interface 2208 * @netdev : The net_device object the Ethernet interface to create on 2209 * @fip_mode: The FIP mode for this creation 2210 * 2211 * Called from fcoe transport 2212 * 2213 * Returns: 0 for success 2214 */ 2215 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode) 2216 { 2217 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP); 2218 } 2219 2220 /** 2221 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs 2222 * @netdev: The net_device to be used by the allocated FCoE Controller 2223 * 2224 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr 2225 * in a link_down state. The allows the user an opportunity to configure 2226 * the FCoE Controller from sysfs before enabling the FCoE Controller. 2227 * 2228 * Creating in with this routine starts the FCoE Controller in Fabric 2229 * mode. The user can change to VN2VN or another mode before enabling. 2230 */ 2231 static int bnx2fc_ctlr_alloc(struct net_device *netdev) 2232 { 2233 return _bnx2fc_create(netdev, FIP_MODE_FABRIC, 2234 BNX2FC_CREATE_LINK_DOWN); 2235 } 2236 2237 /** 2238 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance 2239 * 2240 * @cnic: Pointer to cnic device instance 2241 * 2242 **/ 2243 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) 2244 { 2245 struct bnx2fc_hba *hba; 2246 2247 /* Called with bnx2fc_dev_lock held */ 2248 list_for_each_entry(hba, &adapter_list, list) { 2249 if (hba->cnic == cnic) 2250 return hba; 2251 } 2252 return NULL; 2253 } 2254 2255 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 2256 *netdev) 2257 { 2258 struct bnx2fc_interface *interface; 2259 2260 /* Called with bnx2fc_dev_lock held */ 2261 list_for_each_entry(interface, &if_list, list) { 2262 if (interface->netdev == netdev) 2263 return interface; 2264 } 2265 return NULL; 2266 } 2267 2268 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device 2269 *phys_dev) 2270 { 2271 struct bnx2fc_hba *hba; 2272 2273 /* Called with bnx2fc_dev_lock held */ 2274 list_for_each_entry(hba, &adapter_list, list) { 2275 if (hba->phys_dev == phys_dev) 2276 return hba; 2277 } 2278 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); 2279 return NULL; 2280 } 2281 2282 /** 2283 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources 2284 * 2285 * @dev cnic device handle 2286 */ 2287 static void bnx2fc_ulp_exit(struct cnic_dev *dev) 2288 { 2289 struct bnx2fc_hba *hba; 2290 struct bnx2fc_interface *interface, *tmp; 2291 2292 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); 2293 2294 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { 2295 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", 2296 dev->netdev->name, dev->flags); 2297 return; 2298 } 2299 2300 mutex_lock(&bnx2fc_dev_lock); 2301 hba = bnx2fc_find_hba_for_cnic(dev); 2302 if (!hba) { 2303 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", 2304 dev); 2305 mutex_unlock(&bnx2fc_dev_lock); 2306 return; 2307 } 2308 2309 list_del_init(&hba->list); 2310 adapter_count--; 2311 2312 list_for_each_entry_safe(interface, tmp, &if_list, list) 2313 /* destroy not called yet, move to quiesced list */ 2314 if (interface->hba == hba) 2315 __bnx2fc_destroy(interface); 2316 mutex_unlock(&bnx2fc_dev_lock); 2317 2318 bnx2fc_ulp_stop(hba); 2319 /* unregister cnic device */ 2320 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) 2321 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); 2322 bnx2fc_hba_destroy(hba); 2323 } 2324 2325 /** 2326 * bnx2fc_fcoe_reset - Resets the fcoe 2327 * 2328 * @shost: shost the reset is from 2329 * 2330 * Returns: always 0 2331 */ 2332 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) 2333 { 2334 struct fc_lport *lport = shost_priv(shost); 2335 fc_lport_reset(lport); 2336 return 0; 2337 } 2338 2339 2340 static bool bnx2fc_match(struct net_device *netdev) 2341 { 2342 struct net_device *phys_dev = netdev; 2343 2344 mutex_lock(&bnx2fc_dev_lock); 2345 if (netdev->priv_flags & IFF_802_1Q_VLAN) 2346 phys_dev = vlan_dev_real_dev(netdev); 2347 2348 if (bnx2fc_hba_lookup(phys_dev)) { 2349 mutex_unlock(&bnx2fc_dev_lock); 2350 return true; 2351 } 2352 2353 mutex_unlock(&bnx2fc_dev_lock); 2354 return false; 2355 } 2356 2357 2358 static struct fcoe_transport bnx2fc_transport = { 2359 .name = {"bnx2fc"}, 2360 .attached = false, 2361 .list = LIST_HEAD_INIT(bnx2fc_transport.list), 2362 .alloc = bnx2fc_ctlr_alloc, 2363 .match = bnx2fc_match, 2364 .create = bnx2fc_create, 2365 .destroy = bnx2fc_destroy, 2366 .enable = bnx2fc_enable, 2367 .disable = bnx2fc_disable, 2368 }; 2369 2370 /** 2371 * bnx2fc_percpu_thread_create - Create a receive thread for an 2372 * online CPU 2373 * 2374 * @cpu: cpu index for the online cpu 2375 */ 2376 static void bnx2fc_percpu_thread_create(unsigned int cpu) 2377 { 2378 struct bnx2fc_percpu_s *p; 2379 struct task_struct *thread; 2380 2381 p = &per_cpu(bnx2fc_percpu, cpu); 2382 2383 thread = kthread_create_on_node(bnx2fc_percpu_io_thread, 2384 (void *)p, cpu_to_node(cpu), 2385 "bnx2fc_thread/%d", cpu); 2386 /* bind thread to the cpu */ 2387 if (likely(!IS_ERR(thread))) { 2388 kthread_bind(thread, cpu); 2389 p->iothread = thread; 2390 wake_up_process(thread); 2391 } 2392 } 2393 2394 static void bnx2fc_percpu_thread_destroy(unsigned int cpu) 2395 { 2396 struct bnx2fc_percpu_s *p; 2397 struct task_struct *thread; 2398 struct bnx2fc_work *work, *tmp; 2399 2400 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); 2401 2402 /* Prevent any new work from being queued for this CPU */ 2403 p = &per_cpu(bnx2fc_percpu, cpu); 2404 spin_lock_bh(&p->fp_work_lock); 2405 thread = p->iothread; 2406 p->iothread = NULL; 2407 2408 2409 /* Free all work in the list */ 2410 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 2411 list_del_init(&work->list); 2412 bnx2fc_process_cq_compl(work->tgt, work->wqe); 2413 kfree(work); 2414 } 2415 2416 spin_unlock_bh(&p->fp_work_lock); 2417 2418 if (thread) 2419 kthread_stop(thread); 2420 } 2421 2422 /** 2423 * bnx2fc_cpu_callback - Handler for CPU hotplug events 2424 * 2425 * @nfb: The callback data block 2426 * @action: The event triggering the callback 2427 * @hcpu: The index of the CPU that the event is for 2428 * 2429 * This creates or destroys per-CPU data for fcoe 2430 * 2431 * Returns NOTIFY_OK always. 2432 */ 2433 static int bnx2fc_cpu_callback(struct notifier_block *nfb, 2434 unsigned long action, void *hcpu) 2435 { 2436 unsigned cpu = (unsigned long)hcpu; 2437 2438 switch (action) { 2439 case CPU_ONLINE: 2440 case CPU_ONLINE_FROZEN: 2441 printk(PFX "CPU %x online: Create Rx thread\n", cpu); 2442 bnx2fc_percpu_thread_create(cpu); 2443 break; 2444 case CPU_DEAD: 2445 case CPU_DEAD_FROZEN: 2446 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu); 2447 bnx2fc_percpu_thread_destroy(cpu); 2448 break; 2449 default: 2450 break; 2451 } 2452 return NOTIFY_OK; 2453 } 2454 2455 /** 2456 * bnx2fc_mod_init - module init entry point 2457 * 2458 * Initialize driver wide global data structures, and register 2459 * with cnic module 2460 **/ 2461 static int __init bnx2fc_mod_init(void) 2462 { 2463 struct fcoe_percpu_s *bg; 2464 struct task_struct *l2_thread; 2465 int rc = 0; 2466 unsigned int cpu = 0; 2467 struct bnx2fc_percpu_s *p; 2468 2469 printk(KERN_INFO PFX "%s", version); 2470 2471 /* register as a fcoe transport */ 2472 rc = fcoe_transport_attach(&bnx2fc_transport); 2473 if (rc) { 2474 printk(KERN_ERR "failed to register an fcoe transport, check " 2475 "if libfcoe is loaded\n"); 2476 goto out; 2477 } 2478 2479 INIT_LIST_HEAD(&adapter_list); 2480 INIT_LIST_HEAD(&if_list); 2481 mutex_init(&bnx2fc_dev_lock); 2482 adapter_count = 0; 2483 2484 /* Attach FC transport template */ 2485 rc = bnx2fc_attach_transport(); 2486 if (rc) 2487 goto detach_ft; 2488 2489 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); 2490 if (!bnx2fc_wq) { 2491 rc = -ENOMEM; 2492 goto release_bt; 2493 } 2494 2495 bg = &bnx2fc_global; 2496 skb_queue_head_init(&bg->fcoe_rx_list); 2497 l2_thread = kthread_create(bnx2fc_l2_rcv_thread, 2498 (void *)bg, 2499 "bnx2fc_l2_thread"); 2500 if (IS_ERR(l2_thread)) { 2501 rc = PTR_ERR(l2_thread); 2502 goto free_wq; 2503 } 2504 wake_up_process(l2_thread); 2505 spin_lock_bh(&bg->fcoe_rx_list.lock); 2506 bg->thread = l2_thread; 2507 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2508 2509 for_each_possible_cpu(cpu) { 2510 p = &per_cpu(bnx2fc_percpu, cpu); 2511 INIT_LIST_HEAD(&p->work_list); 2512 spin_lock_init(&p->fp_work_lock); 2513 } 2514 2515 for_each_online_cpu(cpu) { 2516 bnx2fc_percpu_thread_create(cpu); 2517 } 2518 2519 /* Initialize per CPU interrupt thread */ 2520 register_hotcpu_notifier(&bnx2fc_cpu_notifier); 2521 2522 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); 2523 2524 return 0; 2525 2526 free_wq: 2527 destroy_workqueue(bnx2fc_wq); 2528 release_bt: 2529 bnx2fc_release_transport(); 2530 detach_ft: 2531 fcoe_transport_detach(&bnx2fc_transport); 2532 out: 2533 return rc; 2534 } 2535 2536 static void __exit bnx2fc_mod_exit(void) 2537 { 2538 LIST_HEAD(to_be_deleted); 2539 struct bnx2fc_hba *hba, *next; 2540 struct fcoe_percpu_s *bg; 2541 struct task_struct *l2_thread; 2542 struct sk_buff *skb; 2543 unsigned int cpu = 0; 2544 2545 /* 2546 * NOTE: Since cnic calls register_driver routine rtnl_lock, 2547 * it will have higher precedence than bnx2fc_dev_lock. 2548 * unregister_device() cannot be called with bnx2fc_dev_lock 2549 * held. 2550 */ 2551 mutex_lock(&bnx2fc_dev_lock); 2552 list_splice(&adapter_list, &to_be_deleted); 2553 INIT_LIST_HEAD(&adapter_list); 2554 adapter_count = 0; 2555 mutex_unlock(&bnx2fc_dev_lock); 2556 2557 /* Unregister with cnic */ 2558 list_for_each_entry_safe(hba, next, &to_be_deleted, list) { 2559 list_del_init(&hba->list); 2560 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", 2561 hba); 2562 bnx2fc_ulp_stop(hba); 2563 /* unregister cnic device */ 2564 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, 2565 &hba->reg_with_cnic)) 2566 hba->cnic->unregister_device(hba->cnic, 2567 CNIC_ULP_FCOE); 2568 bnx2fc_hba_destroy(hba); 2569 } 2570 cnic_unregister_driver(CNIC_ULP_FCOE); 2571 2572 /* Destroy global thread */ 2573 bg = &bnx2fc_global; 2574 spin_lock_bh(&bg->fcoe_rx_list.lock); 2575 l2_thread = bg->thread; 2576 bg->thread = NULL; 2577 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) 2578 kfree_skb(skb); 2579 2580 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2581 2582 if (l2_thread) 2583 kthread_stop(l2_thread); 2584 2585 unregister_hotcpu_notifier(&bnx2fc_cpu_notifier); 2586 2587 /* Destroy per cpu threads */ 2588 for_each_online_cpu(cpu) { 2589 bnx2fc_percpu_thread_destroy(cpu); 2590 } 2591 2592 destroy_workqueue(bnx2fc_wq); 2593 /* 2594 * detach from scsi transport 2595 * must happen after all destroys are done 2596 */ 2597 bnx2fc_release_transport(); 2598 2599 /* detach from fcoe transport */ 2600 fcoe_transport_detach(&bnx2fc_transport); 2601 } 2602 2603 module_init(bnx2fc_mod_init); 2604 module_exit(bnx2fc_mod_exit); 2605 2606 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { 2607 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, 2608 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, 2609 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, 2610 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, 2611 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, 2612 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, 2613 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, 2614 2615 .get_fcoe_fcf_selected = fcoe_fcf_get_selected, 2616 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, 2617 }; 2618 2619 static struct fc_function_template bnx2fc_transport_function = { 2620 .show_host_node_name = 1, 2621 .show_host_port_name = 1, 2622 .show_host_supported_classes = 1, 2623 .show_host_supported_fc4s = 1, 2624 .show_host_active_fc4s = 1, 2625 .show_host_maxframe_size = 1, 2626 2627 .show_host_port_id = 1, 2628 .show_host_supported_speeds = 1, 2629 .get_host_speed = fc_get_host_speed, 2630 .show_host_speed = 1, 2631 .show_host_port_type = 1, 2632 .get_host_port_state = fc_get_host_port_state, 2633 .show_host_port_state = 1, 2634 .show_host_symbolic_name = 1, 2635 2636 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2637 sizeof(struct bnx2fc_rport)), 2638 .show_rport_maxframe_size = 1, 2639 .show_rport_supported_classes = 1, 2640 2641 .show_host_fabric_name = 1, 2642 .show_starget_node_name = 1, 2643 .show_starget_port_name = 1, 2644 .show_starget_port_id = 1, 2645 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2646 .show_rport_dev_loss_tmo = 1, 2647 .get_fc_host_stats = bnx2fc_get_host_stats, 2648 2649 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2650 2651 .terminate_rport_io = fc_rport_terminate_io, 2652 2653 .vport_create = bnx2fc_vport_create, 2654 .vport_delete = bnx2fc_vport_destroy, 2655 .vport_disable = bnx2fc_vport_disable, 2656 .bsg_request = fc_lport_bsg_request, 2657 }; 2658 2659 static struct fc_function_template bnx2fc_vport_xport_function = { 2660 .show_host_node_name = 1, 2661 .show_host_port_name = 1, 2662 .show_host_supported_classes = 1, 2663 .show_host_supported_fc4s = 1, 2664 .show_host_active_fc4s = 1, 2665 .show_host_maxframe_size = 1, 2666 2667 .show_host_port_id = 1, 2668 .show_host_supported_speeds = 1, 2669 .get_host_speed = fc_get_host_speed, 2670 .show_host_speed = 1, 2671 .show_host_port_type = 1, 2672 .get_host_port_state = fc_get_host_port_state, 2673 .show_host_port_state = 1, 2674 .show_host_symbolic_name = 1, 2675 2676 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2677 sizeof(struct bnx2fc_rport)), 2678 .show_rport_maxframe_size = 1, 2679 .show_rport_supported_classes = 1, 2680 2681 .show_host_fabric_name = 1, 2682 .show_starget_node_name = 1, 2683 .show_starget_port_name = 1, 2684 .show_starget_port_id = 1, 2685 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2686 .show_rport_dev_loss_tmo = 1, 2687 .get_fc_host_stats = fc_get_host_stats, 2688 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2689 .terminate_rport_io = fc_rport_terminate_io, 2690 .bsg_request = fc_lport_bsg_request, 2691 }; 2692 2693 /** 2694 * scsi_host_template structure used while registering with SCSI-ml 2695 */ 2696 static struct scsi_host_template bnx2fc_shost_template = { 2697 .module = THIS_MODULE, 2698 .name = "Broadcom Offload FCoE Initiator", 2699 .queuecommand = bnx2fc_queuecommand, 2700 .eh_abort_handler = bnx2fc_eh_abort, /* abts */ 2701 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ 2702 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ 2703 .eh_host_reset_handler = fc_eh_host_reset, 2704 .slave_alloc = fc_slave_alloc, 2705 .change_queue_depth = fc_change_queue_depth, 2706 .change_queue_type = fc_change_queue_type, 2707 .this_id = -1, 2708 .cmd_per_lun = 3, 2709 .can_queue = BNX2FC_CAN_QUEUE, 2710 .use_clustering = ENABLE_CLUSTERING, 2711 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, 2712 .max_sectors = 1024, 2713 }; 2714 2715 static struct libfc_function_template bnx2fc_libfc_fcn_templ = { 2716 .frame_send = bnx2fc_xmit, 2717 .elsct_send = bnx2fc_elsct_send, 2718 .fcp_abort_io = bnx2fc_abort_io, 2719 .fcp_cleanup = bnx2fc_cleanup, 2720 .get_lesb = fcoe_get_lesb, 2721 .rport_event_callback = bnx2fc_rport_event_handler, 2722 }; 2723 2724 /** 2725 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface 2726 * structure carrying callback function pointers 2727 */ 2728 static struct cnic_ulp_ops bnx2fc_cnic_cb = { 2729 .owner = THIS_MODULE, 2730 .cnic_init = bnx2fc_ulp_init, 2731 .cnic_exit = bnx2fc_ulp_exit, 2732 .cnic_start = bnx2fc_ulp_start, 2733 .cnic_stop = bnx2fc_ulp_stop, 2734 .indicate_kcqes = bnx2fc_indicate_kcqe, 2735 .indicate_netevent = bnx2fc_indicate_netevent, 2736 .cnic_get_stats = bnx2fc_ulp_get_stats, 2737 }; 2738