1 /* bnx2fc_fcoe.c: QLogic Linux FCoE offload driver. 2 * This file contains the code that interacts with libfc, libfcoe, 3 * cnic modules to create FCoE instances, send/receive non-offloaded 4 * FIP/FCoE packets, listen to link events etc. 5 * 6 * Copyright (c) 2008-2013 Broadcom Corporation 7 * Copyright (c) 2014-2015 QLogic Corporation 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation. 12 * 13 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com) 14 */ 15 16 #include "bnx2fc.h" 17 18 static struct list_head adapter_list; 19 static struct list_head if_list; 20 static u32 adapter_count; 21 static DEFINE_MUTEX(bnx2fc_dev_lock); 22 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu); 23 24 #define DRV_MODULE_NAME "bnx2fc" 25 #define DRV_MODULE_VERSION BNX2FC_VERSION 26 #define DRV_MODULE_RELDATE "October 15, 2015" 27 28 29 static char version[] = 30 "QLogic FCoE Driver " DRV_MODULE_NAME \ 31 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; 32 33 34 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>"); 35 MODULE_DESCRIPTION("QLogic FCoE Driver"); 36 MODULE_LICENSE("GPL"); 37 MODULE_VERSION(DRV_MODULE_VERSION); 38 39 #define BNX2FC_MAX_QUEUE_DEPTH 256 40 #define BNX2FC_MIN_QUEUE_DEPTH 32 41 #define FCOE_WORD_TO_BYTE 4 42 43 static struct scsi_transport_template *bnx2fc_transport_template; 44 static struct scsi_transport_template *bnx2fc_vport_xport_template; 45 46 struct workqueue_struct *bnx2fc_wq; 47 48 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure. 49 * Here the io threads are per cpu but the l2 thread is just one 50 */ 51 struct fcoe_percpu_s bnx2fc_global; 52 DEFINE_SPINLOCK(bnx2fc_global_lock); 53 54 static struct cnic_ulp_ops bnx2fc_cnic_cb; 55 static struct libfc_function_template bnx2fc_libfc_fcn_templ; 56 static struct scsi_host_template bnx2fc_shost_template; 57 static struct fc_function_template bnx2fc_transport_function; 58 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ; 59 static struct fc_function_template bnx2fc_vport_xport_function; 60 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode); 61 static void __bnx2fc_destroy(struct bnx2fc_interface *interface); 62 static int bnx2fc_destroy(struct net_device *net_device); 63 static int bnx2fc_enable(struct net_device *netdev); 64 static int bnx2fc_disable(struct net_device *netdev); 65 66 /* fcoe_syfs control interface handlers */ 67 static int bnx2fc_ctlr_alloc(struct net_device *netdev); 68 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev); 69 70 static void bnx2fc_recv_frame(struct sk_buff *skb); 71 72 static void bnx2fc_start_disc(struct bnx2fc_interface *interface); 73 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev); 74 static int bnx2fc_lport_config(struct fc_lport *lport); 75 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba); 76 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba); 77 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba); 78 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba); 79 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba); 80 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 81 struct device *parent, int npiv); 82 static void bnx2fc_destroy_work(struct work_struct *work); 83 84 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev); 85 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 86 *phys_dev); 87 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface); 88 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic); 89 90 static int bnx2fc_fw_init(struct bnx2fc_hba *hba); 91 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba); 92 93 static void bnx2fc_port_shutdown(struct fc_lport *lport); 94 static void bnx2fc_stop(struct bnx2fc_interface *interface); 95 static int __init bnx2fc_mod_init(void); 96 static void __exit bnx2fc_mod_exit(void); 97 98 unsigned int bnx2fc_debug_level; 99 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR); 100 101 static int bnx2fc_cpu_callback(struct notifier_block *nfb, 102 unsigned long action, void *hcpu); 103 /* notification function for CPU hotplug events */ 104 static struct notifier_block bnx2fc_cpu_notifier = { 105 .notifier_call = bnx2fc_cpu_callback, 106 }; 107 108 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport) 109 { 110 return ((struct bnx2fc_interface *) 111 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev; 112 } 113 114 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev) 115 { 116 struct fcoe_ctlr_device *ctlr_dev = 117 fcoe_fcf_dev_to_ctlr_dev(fcf_dev); 118 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); 119 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr); 120 121 fcf_dev->vlan_id = fcoe->vlan_id; 122 } 123 124 static void bnx2fc_clean_rx_queue(struct fc_lport *lp) 125 { 126 struct fcoe_percpu_s *bg; 127 struct fcoe_rcv_info *fr; 128 struct sk_buff_head *list; 129 struct sk_buff *skb, *next; 130 struct sk_buff *head; 131 132 bg = &bnx2fc_global; 133 spin_lock_bh(&bg->fcoe_rx_list.lock); 134 list = &bg->fcoe_rx_list; 135 head = list->next; 136 for (skb = head; skb != (struct sk_buff *)list; 137 skb = next) { 138 next = skb->next; 139 fr = fcoe_dev_from_skb(skb); 140 if (fr->fr_dev == lp) { 141 __skb_unlink(skb, list); 142 kfree_skb(skb); 143 } 144 } 145 spin_unlock_bh(&bg->fcoe_rx_list.lock); 146 } 147 148 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen) 149 { 150 int rc; 151 spin_lock(&bnx2fc_global_lock); 152 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global); 153 spin_unlock(&bnx2fc_global_lock); 154 155 return rc; 156 } 157 158 static void bnx2fc_abort_io(struct fc_lport *lport) 159 { 160 /* 161 * This function is no-op for bnx2fc, but we do 162 * not want to leave it as NULL either, as libfc 163 * can call the default function which is 164 * fc_fcp_abort_io. 165 */ 166 } 167 168 static void bnx2fc_cleanup(struct fc_lport *lport) 169 { 170 struct fcoe_port *port = lport_priv(lport); 171 struct bnx2fc_interface *interface = port->priv; 172 struct bnx2fc_hba *hba = interface->hba; 173 struct bnx2fc_rport *tgt; 174 int i; 175 176 BNX2FC_MISC_DBG("Entered %s\n", __func__); 177 mutex_lock(&hba->hba_mutex); 178 spin_lock_bh(&hba->hba_lock); 179 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) { 180 tgt = hba->tgt_ofld_list[i]; 181 if (tgt) { 182 /* Cleanup IOs belonging to requested vport */ 183 if (tgt->port == port) { 184 spin_unlock_bh(&hba->hba_lock); 185 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n"); 186 bnx2fc_flush_active_ios(tgt); 187 spin_lock_bh(&hba->hba_lock); 188 } 189 } 190 } 191 spin_unlock_bh(&hba->hba_lock); 192 mutex_unlock(&hba->hba_mutex); 193 } 194 195 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt, 196 struct fc_frame *fp) 197 { 198 struct fc_rport_priv *rdata = tgt->rdata; 199 struct fc_frame_header *fh; 200 int rc = 0; 201 202 fh = fc_frame_header_get(fp); 203 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, " 204 "r_ctl = 0x%x\n", rdata->ids.port_id, 205 ntohs(fh->fh_ox_id), fh->fh_r_ctl); 206 if ((fh->fh_type == FC_TYPE_ELS) && 207 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 208 209 switch (fc_frame_payload_op(fp)) { 210 case ELS_ADISC: 211 rc = bnx2fc_send_adisc(tgt, fp); 212 break; 213 case ELS_LOGO: 214 rc = bnx2fc_send_logo(tgt, fp); 215 break; 216 case ELS_RLS: 217 rc = bnx2fc_send_rls(tgt, fp); 218 break; 219 default: 220 break; 221 } 222 } else if ((fh->fh_type == FC_TYPE_BLS) && 223 (fh->fh_r_ctl == FC_RCTL_BA_ABTS)) 224 BNX2FC_TGT_DBG(tgt, "ABTS frame\n"); 225 else { 226 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x " 227 "rctl 0x%x thru non-offload path\n", 228 fh->fh_type, fh->fh_r_ctl); 229 return -ENODEV; 230 } 231 if (rc) 232 return -ENOMEM; 233 else 234 return 0; 235 } 236 237 /** 238 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function 239 * 240 * @lport: the associated local port 241 * @fp: the fc_frame to be transmitted 242 */ 243 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp) 244 { 245 struct ethhdr *eh; 246 struct fcoe_crc_eof *cp; 247 struct sk_buff *skb; 248 struct fc_frame_header *fh; 249 struct bnx2fc_interface *interface; 250 struct fcoe_ctlr *ctlr; 251 struct bnx2fc_hba *hba; 252 struct fcoe_port *port; 253 struct fcoe_hdr *hp; 254 struct bnx2fc_rport *tgt; 255 struct fc_stats *stats; 256 u8 sof, eof; 257 u32 crc; 258 unsigned int hlen, tlen, elen; 259 int wlen, rc = 0; 260 261 port = (struct fcoe_port *)lport_priv(lport); 262 interface = port->priv; 263 ctlr = bnx2fc_to_ctlr(interface); 264 hba = interface->hba; 265 266 fh = fc_frame_header_get(fp); 267 268 skb = fp_skb(fp); 269 if (!lport->link_up) { 270 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n"); 271 kfree_skb(skb); 272 return 0; 273 } 274 275 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 276 if (!ctlr->sel_fcf) { 277 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n"); 278 kfree_skb(skb); 279 return -EINVAL; 280 } 281 if (fcoe_ctlr_els_send(ctlr, lport, skb)) 282 return 0; 283 } 284 285 sof = fr_sof(fp); 286 eof = fr_eof(fp); 287 288 /* 289 * Snoop the frame header to check if the frame is for 290 * an offloaded session 291 */ 292 /* 293 * tgt_ofld_list access is synchronized using 294 * both hba mutex and hba lock. Atleast hba mutex or 295 * hba lock needs to be held for read access. 296 */ 297 298 spin_lock_bh(&hba->hba_lock); 299 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id)); 300 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) { 301 /* This frame is for offloaded session */ 302 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session " 303 "port_id = 0x%x\n", ntoh24(fh->fh_d_id)); 304 spin_unlock_bh(&hba->hba_lock); 305 rc = bnx2fc_xmit_l2_frame(tgt, fp); 306 if (rc != -ENODEV) { 307 kfree_skb(skb); 308 return rc; 309 } 310 } else { 311 spin_unlock_bh(&hba->hba_lock); 312 } 313 314 elen = sizeof(struct ethhdr); 315 hlen = sizeof(struct fcoe_hdr); 316 tlen = sizeof(struct fcoe_crc_eof); 317 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 318 319 skb->ip_summed = CHECKSUM_NONE; 320 crc = fcoe_fc_crc(fp); 321 322 /* copy port crc and eof to the skb buff */ 323 if (skb_is_nonlinear(skb)) { 324 skb_frag_t *frag; 325 if (bnx2fc_get_paged_crc_eof(skb, tlen)) { 326 kfree_skb(skb); 327 return -ENOMEM; 328 } 329 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 330 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; 331 } else { 332 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); 333 } 334 335 memset(cp, 0, sizeof(*cp)); 336 cp->fcoe_eof = eof; 337 cp->fcoe_crc32 = cpu_to_le32(~crc); 338 if (skb_is_nonlinear(skb)) { 339 kunmap_atomic(cp); 340 cp = NULL; 341 } 342 343 /* adjust skb network/transport offsets to match mac/fcoe/port */ 344 skb_push(skb, elen + hlen); 345 skb_reset_mac_header(skb); 346 skb_reset_network_header(skb); 347 skb->mac_len = elen; 348 skb->protocol = htons(ETH_P_FCOE); 349 skb->dev = interface->netdev; 350 351 /* fill up mac and fcoe headers */ 352 eh = eth_hdr(skb); 353 eh->h_proto = htons(ETH_P_FCOE); 354 if (ctlr->map_dest) 355 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 356 else 357 /* insert GW address */ 358 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); 359 360 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) 361 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); 362 else 363 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); 364 365 hp = (struct fcoe_hdr *)(eh + 1); 366 memset(hp, 0, sizeof(*hp)); 367 if (FC_FCOE_VER) 368 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 369 hp->fcoe_sof = sof; 370 371 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ 372 if (lport->seq_offload && fr_max_payload(fp)) { 373 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; 374 skb_shinfo(skb)->gso_size = fr_max_payload(fp); 375 } else { 376 skb_shinfo(skb)->gso_type = 0; 377 skb_shinfo(skb)->gso_size = 0; 378 } 379 380 /*update tx stats */ 381 stats = per_cpu_ptr(lport->stats, get_cpu()); 382 stats->TxFrames++; 383 stats->TxWords += wlen; 384 put_cpu(); 385 386 /* send down to lld */ 387 fr_dev(fp) = lport; 388 if (port->fcoe_pending_queue.qlen) 389 fcoe_check_wait_queue(lport, skb); 390 else if (fcoe_start_io(skb)) 391 fcoe_check_wait_queue(lport, skb); 392 393 return 0; 394 } 395 396 /** 397 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ 398 * 399 * @skb: the receive socket buffer 400 * @dev: associated net device 401 * @ptype: context 402 * @olddev: last device 403 * 404 * This function receives the packet and builds FC frame and passes it up 405 */ 406 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev, 407 struct packet_type *ptype, struct net_device *olddev) 408 { 409 struct fc_lport *lport; 410 struct bnx2fc_interface *interface; 411 struct fcoe_ctlr *ctlr; 412 struct fc_frame_header *fh; 413 struct fcoe_rcv_info *fr; 414 struct fcoe_percpu_s *bg; 415 struct sk_buff *tmp_skb; 416 unsigned short oxid; 417 418 interface = container_of(ptype, struct bnx2fc_interface, 419 fcoe_packet_type); 420 ctlr = bnx2fc_to_ctlr(interface); 421 lport = ctlr->lp; 422 423 if (unlikely(lport == NULL)) { 424 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n"); 425 goto err; 426 } 427 428 tmp_skb = skb_share_check(skb, GFP_ATOMIC); 429 if (!tmp_skb) 430 goto err; 431 432 skb = tmp_skb; 433 434 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { 435 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n"); 436 goto err; 437 } 438 439 /* 440 * Check for minimum frame length, and make sure required FCoE 441 * and FC headers are pulled into the linear data area. 442 */ 443 if (unlikely((skb->len < FCOE_MIN_FRAME) || 444 !pskb_may_pull(skb, FCOE_HEADER_LEN))) 445 goto err; 446 447 skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); 448 fh = (struct fc_frame_header *) skb_transport_header(skb); 449 450 oxid = ntohs(fh->fh_ox_id); 451 452 fr = fcoe_dev_from_skb(skb); 453 fr->fr_dev = lport; 454 455 bg = &bnx2fc_global; 456 spin_lock(&bg->fcoe_rx_list.lock); 457 458 __skb_queue_tail(&bg->fcoe_rx_list, skb); 459 if (bg->fcoe_rx_list.qlen == 1) 460 wake_up_process(bg->thread); 461 462 spin_unlock(&bg->fcoe_rx_list.lock); 463 464 return 0; 465 err: 466 kfree_skb(skb); 467 return -1; 468 } 469 470 static int bnx2fc_l2_rcv_thread(void *arg) 471 { 472 struct fcoe_percpu_s *bg = arg; 473 struct sk_buff *skb; 474 475 set_user_nice(current, MIN_NICE); 476 set_current_state(TASK_INTERRUPTIBLE); 477 while (!kthread_should_stop()) { 478 schedule(); 479 spin_lock_bh(&bg->fcoe_rx_list.lock); 480 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { 481 spin_unlock_bh(&bg->fcoe_rx_list.lock); 482 bnx2fc_recv_frame(skb); 483 spin_lock_bh(&bg->fcoe_rx_list.lock); 484 } 485 __set_current_state(TASK_INTERRUPTIBLE); 486 spin_unlock_bh(&bg->fcoe_rx_list.lock); 487 } 488 __set_current_state(TASK_RUNNING); 489 return 0; 490 } 491 492 493 static void bnx2fc_recv_frame(struct sk_buff *skb) 494 { 495 u32 fr_len; 496 struct fc_lport *lport; 497 struct fcoe_rcv_info *fr; 498 struct fc_stats *stats; 499 struct fc_frame_header *fh; 500 struct fcoe_crc_eof crc_eof; 501 struct fc_frame *fp; 502 struct fc_lport *vn_port; 503 struct fcoe_port *port; 504 u8 *mac = NULL; 505 u8 *dest_mac = NULL; 506 struct fcoe_hdr *hp; 507 508 fr = fcoe_dev_from_skb(skb); 509 lport = fr->fr_dev; 510 if (unlikely(lport == NULL)) { 511 printk(KERN_ERR PFX "Invalid lport struct\n"); 512 kfree_skb(skb); 513 return; 514 } 515 516 if (skb_is_nonlinear(skb)) 517 skb_linearize(skb); 518 mac = eth_hdr(skb)->h_source; 519 dest_mac = eth_hdr(skb)->h_dest; 520 521 /* Pull the header */ 522 hp = (struct fcoe_hdr *) skb_network_header(skb); 523 fh = (struct fc_frame_header *) skb_transport_header(skb); 524 skb_pull(skb, sizeof(struct fcoe_hdr)); 525 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 526 527 fp = (struct fc_frame *)skb; 528 fc_frame_init(fp); 529 fr_dev(fp) = lport; 530 fr_sof(fp) = hp->fcoe_sof; 531 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 532 kfree_skb(skb); 533 return; 534 } 535 fr_eof(fp) = crc_eof.fcoe_eof; 536 fr_crc(fp) = crc_eof.fcoe_crc32; 537 if (pskb_trim(skb, fr_len)) { 538 kfree_skb(skb); 539 return; 540 } 541 542 fh = fc_frame_header_get(fp); 543 544 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 545 if (vn_port) { 546 port = lport_priv(vn_port); 547 if (!ether_addr_equal(port->data_src_addr, dest_mac)) { 548 BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); 549 kfree_skb(skb); 550 return; 551 } 552 } 553 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 554 fh->fh_type == FC_TYPE_FCP) { 555 /* Drop FCP data. We dont this in L2 path */ 556 kfree_skb(skb); 557 return; 558 } 559 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 560 fh->fh_type == FC_TYPE_ELS) { 561 switch (fc_frame_payload_op(fp)) { 562 case ELS_LOGO: 563 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 564 /* drop non-FIP LOGO */ 565 kfree_skb(skb); 566 return; 567 } 568 break; 569 } 570 } 571 572 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 573 /* Drop incoming ABTS */ 574 kfree_skb(skb); 575 return; 576 } 577 578 stats = per_cpu_ptr(lport->stats, smp_processor_id()); 579 stats->RxFrames++; 580 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; 581 582 if (le32_to_cpu(fr_crc(fp)) != 583 ~crc32(~0, skb->data, fr_len)) { 584 if (stats->InvalidCRCCount < 5) 585 printk(KERN_WARNING PFX "dropping frame with " 586 "CRC error\n"); 587 stats->InvalidCRCCount++; 588 kfree_skb(skb); 589 return; 590 } 591 fc_exch_recv(lport, fp); 592 } 593 594 /** 595 * bnx2fc_percpu_io_thread - thread per cpu for ios 596 * 597 * @arg: ptr to bnx2fc_percpu_info structure 598 */ 599 int bnx2fc_percpu_io_thread(void *arg) 600 { 601 struct bnx2fc_percpu_s *p = arg; 602 struct bnx2fc_work *work, *tmp; 603 LIST_HEAD(work_list); 604 605 set_user_nice(current, MIN_NICE); 606 set_current_state(TASK_INTERRUPTIBLE); 607 while (!kthread_should_stop()) { 608 schedule(); 609 spin_lock_bh(&p->fp_work_lock); 610 while (!list_empty(&p->work_list)) { 611 list_splice_init(&p->work_list, &work_list); 612 spin_unlock_bh(&p->fp_work_lock); 613 614 list_for_each_entry_safe(work, tmp, &work_list, list) { 615 list_del_init(&work->list); 616 bnx2fc_process_cq_compl(work->tgt, work->wqe); 617 kfree(work); 618 } 619 620 spin_lock_bh(&p->fp_work_lock); 621 } 622 __set_current_state(TASK_INTERRUPTIBLE); 623 spin_unlock_bh(&p->fp_work_lock); 624 } 625 __set_current_state(TASK_RUNNING); 626 627 return 0; 628 } 629 630 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) 631 { 632 struct fc_host_statistics *bnx2fc_stats; 633 struct fc_lport *lport = shost_priv(shost); 634 struct fcoe_port *port = lport_priv(lport); 635 struct bnx2fc_interface *interface = port->priv; 636 struct bnx2fc_hba *hba = interface->hba; 637 struct fcoe_statistics_params *fw_stats; 638 int rc = 0; 639 640 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; 641 if (!fw_stats) 642 return NULL; 643 644 bnx2fc_stats = fc_get_host_stats(shost); 645 646 init_completion(&hba->stat_req_done); 647 if (bnx2fc_send_stat_req(hba)) 648 return bnx2fc_stats; 649 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); 650 if (!rc) { 651 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); 652 return bnx2fc_stats; 653 } 654 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); 655 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; 656 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); 657 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; 658 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); 659 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); 660 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); 661 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; 662 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); 663 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); 664 665 bnx2fc_stats->dumped_frames = 0; 666 bnx2fc_stats->lip_count = 0; 667 bnx2fc_stats->nos_count = 0; 668 bnx2fc_stats->loss_of_sync_count = 0; 669 bnx2fc_stats->loss_of_signal_count = 0; 670 bnx2fc_stats->prim_seq_protocol_err_count = 0; 671 672 memcpy(&hba->prev_stats, hba->stats_buffer, 673 sizeof(struct fcoe_statistics_params)); 674 return bnx2fc_stats; 675 } 676 677 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) 678 { 679 struct fcoe_port *port = lport_priv(lport); 680 struct bnx2fc_interface *interface = port->priv; 681 struct bnx2fc_hba *hba = interface->hba; 682 struct Scsi_Host *shost = lport->host; 683 int rc = 0; 684 685 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; 686 shost->max_lun = BNX2FC_MAX_LUN; 687 shost->max_id = BNX2FC_MAX_FCP_TGT; 688 shost->max_channel = 0; 689 if (lport->vport) 690 shost->transportt = bnx2fc_vport_xport_template; 691 else 692 shost->transportt = bnx2fc_transport_template; 693 694 /* Add the new host to SCSI-ml */ 695 rc = scsi_add_host(lport->host, dev); 696 if (rc) { 697 printk(KERN_ERR PFX "Error on scsi_add_host\n"); 698 return rc; 699 } 700 if (!lport->vport) 701 fc_host_max_npiv_vports(lport->host) = USHRT_MAX; 702 snprintf(fc_host_symbolic_name(lport->host), 256, 703 "%s (QLogic %s) v%s over %s", 704 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION, 705 interface->netdev->name); 706 707 return 0; 708 } 709 710 static int bnx2fc_link_ok(struct fc_lport *lport) 711 { 712 struct fcoe_port *port = lport_priv(lport); 713 struct bnx2fc_interface *interface = port->priv; 714 struct bnx2fc_hba *hba = interface->hba; 715 struct net_device *dev = hba->phys_dev; 716 int rc = 0; 717 718 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) 719 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 720 else { 721 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 722 rc = -1; 723 } 724 return rc; 725 } 726 727 /** 728 * bnx2fc_get_link_state - get network link state 729 * 730 * @hba: adapter instance pointer 731 * 732 * updates adapter structure flag based on netdev state 733 */ 734 void bnx2fc_get_link_state(struct bnx2fc_hba *hba) 735 { 736 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) 737 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 738 else 739 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 740 } 741 742 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) 743 { 744 struct bnx2fc_hba *hba; 745 struct bnx2fc_interface *interface; 746 struct fcoe_ctlr *ctlr; 747 struct fcoe_port *port; 748 u64 wwnn, wwpn; 749 750 port = lport_priv(lport); 751 interface = port->priv; 752 ctlr = bnx2fc_to_ctlr(interface); 753 hba = interface->hba; 754 755 /* require support for get_pauseparam ethtool op. */ 756 if (!hba->phys_dev->ethtool_ops || 757 !hba->phys_dev->ethtool_ops->get_pauseparam) 758 return -EOPNOTSUPP; 759 760 if (fc_set_mfs(lport, BNX2FC_MFS)) 761 return -EINVAL; 762 763 skb_queue_head_init(&port->fcoe_pending_queue); 764 port->fcoe_pending_queue_active = 0; 765 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport); 766 767 fcoe_link_speed_update(lport); 768 769 if (!lport->vport) { 770 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) 771 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 772 1, 0); 773 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); 774 fc_set_wwnn(lport, wwnn); 775 776 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) 777 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 778 2, 0); 779 780 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); 781 fc_set_wwpn(lport, wwpn); 782 } 783 784 return 0; 785 } 786 787 static void bnx2fc_destroy_timer(unsigned long data) 788 { 789 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data; 790 791 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " 792 "Destroy compl not received!!\n"); 793 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 794 wake_up_interruptible(&hba->destroy_wait); 795 } 796 797 /** 798 * bnx2fc_indicate_netevent - Generic netdev event handler 799 * 800 * @context: adapter structure pointer 801 * @event: event type 802 * @vlan_id: vlan id - associated vlan id with this event 803 * 804 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and 805 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. 806 */ 807 static void bnx2fc_indicate_netevent(void *context, unsigned long event, 808 u16 vlan_id) 809 { 810 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; 811 struct fcoe_ctlr_device *cdev; 812 struct fc_lport *lport; 813 struct fc_lport *vport; 814 struct bnx2fc_interface *interface, *tmp; 815 struct fcoe_ctlr *ctlr; 816 int wait_for_upload = 0; 817 u32 link_possible = 1; 818 819 if (vlan_id != 0 && event != NETDEV_UNREGISTER) 820 return; 821 822 switch (event) { 823 case NETDEV_UP: 824 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 825 printk(KERN_ERR "indicate_netevent: "\ 826 "hba is not UP!!\n"); 827 break; 828 829 case NETDEV_DOWN: 830 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 831 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 832 link_possible = 0; 833 break; 834 835 case NETDEV_GOING_DOWN: 836 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 837 link_possible = 0; 838 break; 839 840 case NETDEV_CHANGE: 841 break; 842 843 case NETDEV_UNREGISTER: 844 if (!vlan_id) 845 return; 846 mutex_lock(&bnx2fc_dev_lock); 847 list_for_each_entry_safe(interface, tmp, &if_list, list) { 848 if (interface->hba == hba && 849 interface->vlan_id == (vlan_id & VLAN_VID_MASK)) 850 __bnx2fc_destroy(interface); 851 } 852 mutex_unlock(&bnx2fc_dev_lock); 853 854 /* Ensure ALL destroy work has been completed before return */ 855 flush_workqueue(bnx2fc_wq); 856 return; 857 858 default: 859 return; 860 } 861 862 mutex_lock(&bnx2fc_dev_lock); 863 list_for_each_entry(interface, &if_list, list) { 864 865 if (interface->hba != hba) 866 continue; 867 868 ctlr = bnx2fc_to_ctlr(interface); 869 lport = ctlr->lp; 870 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", 871 interface->netdev->name, event); 872 873 fcoe_link_speed_update(lport); 874 875 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 876 877 if (link_possible && !bnx2fc_link_ok(lport)) { 878 switch (cdev->enabled) { 879 case FCOE_CTLR_DISABLED: 880 pr_info("Link up while interface is disabled.\n"); 881 break; 882 case FCOE_CTLR_ENABLED: 883 case FCOE_CTLR_UNUSED: 884 /* Reset max recv frame size to default */ 885 fc_set_mfs(lport, BNX2FC_MFS); 886 /* 887 * ctlr link up will only be handled during 888 * enable to avoid sending discovery 889 * solicitation on a stale vlan 890 */ 891 if (interface->enabled) 892 fcoe_ctlr_link_up(ctlr); 893 }; 894 } else if (fcoe_ctlr_link_down(ctlr)) { 895 switch (cdev->enabled) { 896 case FCOE_CTLR_DISABLED: 897 pr_info("Link down while interface is disabled.\n"); 898 break; 899 case FCOE_CTLR_ENABLED: 900 case FCOE_CTLR_UNUSED: 901 mutex_lock(&lport->lp_mutex); 902 list_for_each_entry(vport, &lport->vports, list) 903 fc_host_port_type(vport->host) = 904 FC_PORTTYPE_UNKNOWN; 905 mutex_unlock(&lport->lp_mutex); 906 fc_host_port_type(lport->host) = 907 FC_PORTTYPE_UNKNOWN; 908 per_cpu_ptr(lport->stats, 909 get_cpu())->LinkFailureCount++; 910 put_cpu(); 911 fcoe_clean_pending_queue(lport); 912 wait_for_upload = 1; 913 }; 914 } 915 } 916 mutex_unlock(&bnx2fc_dev_lock); 917 918 if (wait_for_upload) { 919 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 920 init_waitqueue_head(&hba->shutdown_wait); 921 BNX2FC_MISC_DBG("indicate_netevent " 922 "num_ofld_sess = %d\n", 923 hba->num_ofld_sess); 924 hba->wait_for_link_down = 1; 925 wait_event_interruptible(hba->shutdown_wait, 926 (hba->num_ofld_sess == 0)); 927 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", 928 hba->num_ofld_sess); 929 hba->wait_for_link_down = 0; 930 931 if (signal_pending(current)) 932 flush_signals(current); 933 } 934 } 935 936 static int bnx2fc_libfc_config(struct fc_lport *lport) 937 { 938 939 /* Set the function pointers set by bnx2fc driver */ 940 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, 941 sizeof(struct libfc_function_template)); 942 fc_elsct_init(lport); 943 fc_exch_init(lport); 944 fc_rport_init(lport); 945 fc_disc_init(lport); 946 fc_disc_config(lport, lport); 947 return 0; 948 } 949 950 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba) 951 { 952 int fcoe_min_xid, fcoe_max_xid; 953 954 fcoe_min_xid = hba->max_xid + 1; 955 if (nr_cpu_ids <= 2) 956 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET; 957 else 958 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET; 959 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid, 960 fcoe_max_xid, NULL)) { 961 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); 962 return -ENOMEM; 963 } 964 965 return 0; 966 } 967 968 static int bnx2fc_lport_config(struct fc_lport *lport) 969 { 970 lport->link_up = 0; 971 lport->qfull = 0; 972 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; 973 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; 974 lport->e_d_tov = 2 * 1000; 975 lport->r_a_tov = 10 * 1000; 976 977 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 978 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 979 lport->does_npiv = 1; 980 981 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); 982 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; 983 984 /* alloc stats structure */ 985 if (fc_lport_init_stats(lport)) 986 return -ENOMEM; 987 988 /* Finish fc_lport configuration */ 989 fc_lport_config(lport); 990 991 return 0; 992 } 993 994 /** 995 * bnx2fc_fip_recv - handle a received FIP frame. 996 * 997 * @skb: the received skb 998 * @dev: associated &net_device 999 * @ptype: the &packet_type structure which was used to register this handler. 1000 * @orig_dev: original receive &net_device, in case @ dev is a bond. 1001 * 1002 * Returns: 0 for success 1003 */ 1004 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, 1005 struct packet_type *ptype, 1006 struct net_device *orig_dev) 1007 { 1008 struct bnx2fc_interface *interface; 1009 struct fcoe_ctlr *ctlr; 1010 interface = container_of(ptype, struct bnx2fc_interface, 1011 fip_packet_type); 1012 ctlr = bnx2fc_to_ctlr(interface); 1013 fcoe_ctlr_recv(ctlr, skb); 1014 return 0; 1015 } 1016 1017 /** 1018 * bnx2fc_update_src_mac - Update Ethernet MAC filters. 1019 * 1020 * @fip: FCoE controller. 1021 * @old: Unicast MAC address to delete if the MAC is non-zero. 1022 * @new: Unicast MAC address to add. 1023 * 1024 * Remove any previously-set unicast MAC filter. 1025 * Add secondary FCoE MAC address filter for our OUI. 1026 */ 1027 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) 1028 { 1029 struct fcoe_port *port = lport_priv(lport); 1030 1031 memcpy(port->data_src_addr, addr, ETH_ALEN); 1032 } 1033 1034 /** 1035 * bnx2fc_get_src_mac - return the ethernet source address for an lport 1036 * 1037 * @lport: libfc port 1038 */ 1039 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) 1040 { 1041 struct fcoe_port *port; 1042 1043 port = (struct fcoe_port *)lport_priv(lport); 1044 return port->data_src_addr; 1045 } 1046 1047 /** 1048 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. 1049 * 1050 * @fip: FCoE controller. 1051 * @skb: FIP Packet. 1052 */ 1053 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 1054 { 1055 skb->dev = bnx2fc_from_ctlr(fip)->netdev; 1056 dev_queue_xmit(skb); 1057 } 1058 1059 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) 1060 { 1061 struct Scsi_Host *shost = vport_to_shost(vport); 1062 struct fc_lport *n_port = shost_priv(shost); 1063 struct fcoe_port *port = lport_priv(n_port); 1064 struct bnx2fc_interface *interface = port->priv; 1065 struct net_device *netdev = interface->netdev; 1066 struct fc_lport *vn_port; 1067 int rc; 1068 char buf[32]; 1069 1070 rc = fcoe_validate_vport_create(vport); 1071 if (rc) { 1072 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1073 printk(KERN_ERR PFX "Failed to create vport, " 1074 "WWPN (0x%s) already exists\n", 1075 buf); 1076 return rc; 1077 } 1078 1079 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1080 printk(KERN_ERR PFX "vn ports cannot be created on" 1081 "this interface\n"); 1082 return -EIO; 1083 } 1084 rtnl_lock(); 1085 mutex_lock(&bnx2fc_dev_lock); 1086 vn_port = bnx2fc_if_create(interface, &vport->dev, 1); 1087 mutex_unlock(&bnx2fc_dev_lock); 1088 rtnl_unlock(); 1089 1090 if (!vn_port) { 1091 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", 1092 netdev->name); 1093 return -EIO; 1094 } 1095 1096 if (disabled) { 1097 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1098 } else { 1099 vn_port->boot_time = jiffies; 1100 fc_lport_init(vn_port); 1101 fc_fabric_login(vn_port); 1102 fc_vport_setlink(vn_port); 1103 } 1104 return 0; 1105 } 1106 1107 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) 1108 { 1109 struct bnx2fc_lport *blport, *tmp; 1110 1111 spin_lock_bh(&hba->hba_lock); 1112 list_for_each_entry_safe(blport, tmp, &hba->vports, list) { 1113 if (blport->lport == lport) { 1114 list_del(&blport->list); 1115 kfree(blport); 1116 } 1117 } 1118 spin_unlock_bh(&hba->hba_lock); 1119 } 1120 1121 static int bnx2fc_vport_destroy(struct fc_vport *vport) 1122 { 1123 struct Scsi_Host *shost = vport_to_shost(vport); 1124 struct fc_lport *n_port = shost_priv(shost); 1125 struct fc_lport *vn_port = vport->dd_data; 1126 struct fcoe_port *port = lport_priv(vn_port); 1127 struct bnx2fc_interface *interface = port->priv; 1128 struct fc_lport *v_port; 1129 bool found = false; 1130 1131 mutex_lock(&n_port->lp_mutex); 1132 list_for_each_entry(v_port, &n_port->vports, list) 1133 if (v_port->vport == vport) { 1134 found = true; 1135 break; 1136 } 1137 1138 if (!found) { 1139 mutex_unlock(&n_port->lp_mutex); 1140 return -ENOENT; 1141 } 1142 list_del(&vn_port->list); 1143 mutex_unlock(&n_port->lp_mutex); 1144 bnx2fc_free_vport(interface->hba, port->lport); 1145 bnx2fc_port_shutdown(port->lport); 1146 bnx2fc_interface_put(interface); 1147 queue_work(bnx2fc_wq, &port->destroy_work); 1148 return 0; 1149 } 1150 1151 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) 1152 { 1153 struct fc_lport *lport = vport->dd_data; 1154 1155 if (disable) { 1156 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1157 fc_fabric_logoff(lport); 1158 } else { 1159 lport->boot_time = jiffies; 1160 fc_fabric_login(lport); 1161 fc_vport_setlink(lport); 1162 } 1163 return 0; 1164 } 1165 1166 1167 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) 1168 { 1169 struct net_device *netdev = interface->netdev; 1170 struct net_device *physdev = interface->hba->phys_dev; 1171 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1172 struct netdev_hw_addr *ha; 1173 int sel_san_mac = 0; 1174 1175 /* setup Source MAC Address */ 1176 rcu_read_lock(); 1177 for_each_dev_addr(physdev, ha) { 1178 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", 1179 ha->type); 1180 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], 1181 ha->addr[1], ha->addr[2], ha->addr[3], 1182 ha->addr[4], ha->addr[5]); 1183 1184 if ((ha->type == NETDEV_HW_ADDR_T_SAN) && 1185 (is_valid_ether_addr(ha->addr))) { 1186 memcpy(ctlr->ctl_src_addr, ha->addr, 1187 ETH_ALEN); 1188 sel_san_mac = 1; 1189 BNX2FC_MISC_DBG("Found SAN MAC\n"); 1190 } 1191 } 1192 rcu_read_unlock(); 1193 1194 if (!sel_san_mac) 1195 return -ENODEV; 1196 1197 interface->fip_packet_type.func = bnx2fc_fip_recv; 1198 interface->fip_packet_type.type = htons(ETH_P_FIP); 1199 interface->fip_packet_type.dev = netdev; 1200 dev_add_pack(&interface->fip_packet_type); 1201 1202 interface->fcoe_packet_type.func = bnx2fc_rcv; 1203 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); 1204 interface->fcoe_packet_type.dev = netdev; 1205 dev_add_pack(&interface->fcoe_packet_type); 1206 1207 return 0; 1208 } 1209 1210 static int bnx2fc_attach_transport(void) 1211 { 1212 bnx2fc_transport_template = 1213 fc_attach_transport(&bnx2fc_transport_function); 1214 1215 if (bnx2fc_transport_template == NULL) { 1216 printk(KERN_ERR PFX "Failed to attach FC transport\n"); 1217 return -ENODEV; 1218 } 1219 1220 bnx2fc_vport_xport_template = 1221 fc_attach_transport(&bnx2fc_vport_xport_function); 1222 if (bnx2fc_vport_xport_template == NULL) { 1223 printk(KERN_ERR PFX 1224 "Failed to attach FC transport for vport\n"); 1225 fc_release_transport(bnx2fc_transport_template); 1226 bnx2fc_transport_template = NULL; 1227 return -ENODEV; 1228 } 1229 return 0; 1230 } 1231 static void bnx2fc_release_transport(void) 1232 { 1233 fc_release_transport(bnx2fc_transport_template); 1234 fc_release_transport(bnx2fc_vport_xport_template); 1235 bnx2fc_transport_template = NULL; 1236 bnx2fc_vport_xport_template = NULL; 1237 } 1238 1239 static void bnx2fc_interface_release(struct kref *kref) 1240 { 1241 struct fcoe_ctlr_device *ctlr_dev; 1242 struct bnx2fc_interface *interface; 1243 struct fcoe_ctlr *ctlr; 1244 struct net_device *netdev; 1245 1246 interface = container_of(kref, struct bnx2fc_interface, kref); 1247 BNX2FC_MISC_DBG("Interface is being released\n"); 1248 1249 ctlr = bnx2fc_to_ctlr(interface); 1250 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); 1251 netdev = interface->netdev; 1252 1253 /* tear-down FIP controller */ 1254 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) 1255 fcoe_ctlr_destroy(ctlr); 1256 1257 fcoe_ctlr_device_delete(ctlr_dev); 1258 1259 dev_put(netdev); 1260 module_put(THIS_MODULE); 1261 } 1262 1263 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) 1264 { 1265 kref_get(&interface->kref); 1266 } 1267 1268 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) 1269 { 1270 kref_put(&interface->kref, bnx2fc_interface_release); 1271 } 1272 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) 1273 { 1274 /* Free the command manager */ 1275 if (hba->cmd_mgr) { 1276 bnx2fc_cmd_mgr_free(hba->cmd_mgr); 1277 hba->cmd_mgr = NULL; 1278 } 1279 kfree(hba->tgt_ofld_list); 1280 bnx2fc_unbind_pcidev(hba); 1281 kfree(hba); 1282 } 1283 1284 /** 1285 * bnx2fc_hba_create - create a new bnx2fc hba 1286 * 1287 * @cnic: pointer to cnic device 1288 * 1289 * Creates a new FCoE hba on the given device. 1290 * 1291 */ 1292 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) 1293 { 1294 struct bnx2fc_hba *hba; 1295 struct fcoe_capabilities *fcoe_cap; 1296 int rc; 1297 1298 hba = kzalloc(sizeof(*hba), GFP_KERNEL); 1299 if (!hba) { 1300 printk(KERN_ERR PFX "Unable to allocate hba structure\n"); 1301 return NULL; 1302 } 1303 spin_lock_init(&hba->hba_lock); 1304 mutex_init(&hba->hba_mutex); 1305 1306 hba->cnic = cnic; 1307 1308 hba->max_tasks = cnic->max_fcoe_exchanges; 1309 hba->elstm_xids = (hba->max_tasks / 2); 1310 hba->max_outstanding_cmds = hba->elstm_xids; 1311 hba->max_xid = (hba->max_tasks - 1); 1312 1313 rc = bnx2fc_bind_pcidev(hba); 1314 if (rc) { 1315 printk(KERN_ERR PFX "create_adapter: bind error\n"); 1316 goto bind_err; 1317 } 1318 hba->phys_dev = cnic->netdev; 1319 hba->next_conn_id = 0; 1320 1321 hba->tgt_ofld_list = 1322 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS, 1323 GFP_KERNEL); 1324 if (!hba->tgt_ofld_list) { 1325 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); 1326 goto tgtofld_err; 1327 } 1328 1329 hba->num_ofld_sess = 0; 1330 1331 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba); 1332 if (!hba->cmd_mgr) { 1333 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); 1334 goto cmgr_err; 1335 } 1336 fcoe_cap = &hba->fcoe_cap; 1337 1338 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << 1339 FCOE_IOS_PER_CONNECTION_SHIFT; 1340 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << 1341 FCOE_LOGINS_PER_PORT_SHIFT; 1342 fcoe_cap->capability2 = hba->max_outstanding_cmds << 1343 FCOE_NUMBER_OF_EXCHANGES_SHIFT; 1344 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << 1345 FCOE_NPIV_WWN_PER_PORT_SHIFT; 1346 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << 1347 FCOE_TARGETS_SUPPORTED_SHIFT; 1348 fcoe_cap->capability3 |= hba->max_outstanding_cmds << 1349 FCOE_OUTSTANDING_COMMANDS_SHIFT; 1350 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; 1351 1352 init_waitqueue_head(&hba->shutdown_wait); 1353 init_waitqueue_head(&hba->destroy_wait); 1354 INIT_LIST_HEAD(&hba->vports); 1355 1356 return hba; 1357 1358 cmgr_err: 1359 kfree(hba->tgt_ofld_list); 1360 tgtofld_err: 1361 bnx2fc_unbind_pcidev(hba); 1362 bind_err: 1363 kfree(hba); 1364 return NULL; 1365 } 1366 1367 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba, 1368 struct net_device *netdev, 1369 enum fip_state fip_mode) 1370 { 1371 struct fcoe_ctlr_device *ctlr_dev; 1372 struct bnx2fc_interface *interface; 1373 struct fcoe_ctlr *ctlr; 1374 int size; 1375 int rc = 0; 1376 1377 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); 1378 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, 1379 size); 1380 if (!ctlr_dev) { 1381 printk(KERN_ERR PFX "Unable to allocate interface structure\n"); 1382 return NULL; 1383 } 1384 ctlr = fcoe_ctlr_device_priv(ctlr_dev); 1385 ctlr->cdev = ctlr_dev; 1386 interface = fcoe_ctlr_priv(ctlr); 1387 dev_hold(netdev); 1388 kref_init(&interface->kref); 1389 interface->hba = hba; 1390 interface->netdev = netdev; 1391 1392 /* Initialize FIP */ 1393 fcoe_ctlr_init(ctlr, fip_mode); 1394 ctlr->send = bnx2fc_fip_send; 1395 ctlr->update_mac = bnx2fc_update_src_mac; 1396 ctlr->get_src_addr = bnx2fc_get_src_mac; 1397 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); 1398 1399 rc = bnx2fc_interface_setup(interface); 1400 if (!rc) 1401 return interface; 1402 1403 fcoe_ctlr_destroy(ctlr); 1404 dev_put(netdev); 1405 fcoe_ctlr_device_delete(ctlr_dev); 1406 return NULL; 1407 } 1408 1409 /** 1410 * bnx2fc_if_create - Create FCoE instance on a given interface 1411 * 1412 * @interface: FCoE interface to create a local port on 1413 * @parent: Device pointer to be the parent in sysfs for the SCSI host 1414 * @npiv: Indicates if the port is vport or not 1415 * 1416 * Creates a fc_lport instance and a Scsi_Host instance and configure them. 1417 * 1418 * Returns: Allocated fc_lport or an error pointer 1419 */ 1420 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 1421 struct device *parent, int npiv) 1422 { 1423 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1424 struct fc_lport *lport, *n_port; 1425 struct fcoe_port *port; 1426 struct Scsi_Host *shost; 1427 struct fc_vport *vport = dev_to_vport(parent); 1428 struct bnx2fc_lport *blport; 1429 struct bnx2fc_hba *hba = interface->hba; 1430 int rc = 0; 1431 1432 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); 1433 if (!blport) { 1434 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); 1435 return NULL; 1436 } 1437 1438 /* Allocate Scsi_Host structure */ 1439 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds; 1440 if (!npiv) 1441 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); 1442 else 1443 lport = libfc_vport_create(vport, sizeof(*port)); 1444 1445 if (!lport) { 1446 printk(KERN_ERR PFX "could not allocate scsi host structure\n"); 1447 goto free_blport; 1448 } 1449 shost = lport->host; 1450 port = lport_priv(lport); 1451 port->lport = lport; 1452 port->priv = interface; 1453 port->get_netdev = bnx2fc_netdev; 1454 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work); 1455 1456 /* Configure fcoe_port */ 1457 rc = bnx2fc_lport_config(lport); 1458 if (rc) 1459 goto lp_config_err; 1460 1461 if (npiv) { 1462 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", 1463 vport->node_name, vport->port_name); 1464 fc_set_wwnn(lport, vport->node_name); 1465 fc_set_wwpn(lport, vport->port_name); 1466 } 1467 /* Configure netdev and networking properties of the lport */ 1468 rc = bnx2fc_net_config(lport, interface->netdev); 1469 if (rc) { 1470 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); 1471 goto lp_config_err; 1472 } 1473 1474 rc = bnx2fc_shost_config(lport, parent); 1475 if (rc) { 1476 printk(KERN_ERR PFX "Couldnt configure shost for %s\n", 1477 interface->netdev->name); 1478 goto lp_config_err; 1479 } 1480 1481 /* Initialize the libfc library */ 1482 rc = bnx2fc_libfc_config(lport); 1483 if (rc) { 1484 printk(KERN_ERR PFX "Couldnt configure libfc\n"); 1485 goto shost_err; 1486 } 1487 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1488 1489 /* Allocate exchange manager */ 1490 if (!npiv) 1491 rc = bnx2fc_em_config(lport, hba); 1492 else { 1493 shost = vport_to_shost(vport); 1494 n_port = shost_priv(shost); 1495 rc = fc_exch_mgr_list_clone(n_port, lport); 1496 } 1497 1498 if (rc) { 1499 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); 1500 goto shost_err; 1501 } 1502 1503 bnx2fc_interface_get(interface); 1504 1505 spin_lock_bh(&hba->hba_lock); 1506 blport->lport = lport; 1507 list_add_tail(&blport->list, &hba->vports); 1508 spin_unlock_bh(&hba->hba_lock); 1509 1510 return lport; 1511 1512 shost_err: 1513 scsi_remove_host(shost); 1514 lp_config_err: 1515 scsi_host_put(lport->host); 1516 free_blport: 1517 kfree(blport); 1518 return NULL; 1519 } 1520 1521 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) 1522 { 1523 /* Dont listen for Ethernet packets anymore */ 1524 __dev_remove_pack(&interface->fcoe_packet_type); 1525 __dev_remove_pack(&interface->fip_packet_type); 1526 synchronize_net(); 1527 } 1528 1529 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) 1530 { 1531 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1532 struct fc_lport *lport = ctlr->lp; 1533 struct fcoe_port *port = lport_priv(lport); 1534 struct bnx2fc_hba *hba = interface->hba; 1535 1536 /* Stop the transmit retry timer */ 1537 del_timer_sync(&port->timer); 1538 1539 /* Free existing transmit skbs */ 1540 fcoe_clean_pending_queue(lport); 1541 1542 bnx2fc_net_cleanup(interface); 1543 1544 bnx2fc_free_vport(hba, lport); 1545 } 1546 1547 static void bnx2fc_if_destroy(struct fc_lport *lport) 1548 { 1549 1550 /* Free queued packets for the receive thread */ 1551 bnx2fc_clean_rx_queue(lport); 1552 1553 /* Detach from scsi-ml */ 1554 fc_remove_host(lport->host); 1555 scsi_remove_host(lport->host); 1556 1557 /* 1558 * Note that only the physical lport will have the exchange manager. 1559 * for vports, this function is NOP 1560 */ 1561 fc_exch_mgr_free(lport); 1562 1563 /* Free memory used by statistical counters */ 1564 fc_lport_free_stats(lport); 1565 1566 /* Release Scsi_Host */ 1567 scsi_host_put(lport->host); 1568 } 1569 1570 static void __bnx2fc_destroy(struct bnx2fc_interface *interface) 1571 { 1572 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1573 struct fc_lport *lport = ctlr->lp; 1574 struct fcoe_port *port = lport_priv(lport); 1575 1576 bnx2fc_interface_cleanup(interface); 1577 bnx2fc_stop(interface); 1578 list_del(&interface->list); 1579 bnx2fc_interface_put(interface); 1580 queue_work(bnx2fc_wq, &port->destroy_work); 1581 } 1582 1583 /** 1584 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface 1585 * 1586 * @buffer: The name of the Ethernet interface to be destroyed 1587 * @kp: The associated kernel parameter 1588 * 1589 * Called from sysfs. 1590 * 1591 * Returns: 0 for success 1592 */ 1593 static int bnx2fc_destroy(struct net_device *netdev) 1594 { 1595 struct bnx2fc_interface *interface = NULL; 1596 struct workqueue_struct *timer_work_queue; 1597 struct fcoe_ctlr *ctlr; 1598 int rc = 0; 1599 1600 rtnl_lock(); 1601 mutex_lock(&bnx2fc_dev_lock); 1602 1603 interface = bnx2fc_interface_lookup(netdev); 1604 ctlr = bnx2fc_to_ctlr(interface); 1605 if (!interface || !ctlr->lp) { 1606 rc = -ENODEV; 1607 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); 1608 goto netdev_err; 1609 } 1610 1611 timer_work_queue = interface->timer_work_queue; 1612 __bnx2fc_destroy(interface); 1613 destroy_workqueue(timer_work_queue); 1614 1615 netdev_err: 1616 mutex_unlock(&bnx2fc_dev_lock); 1617 rtnl_unlock(); 1618 return rc; 1619 } 1620 1621 static void bnx2fc_destroy_work(struct work_struct *work) 1622 { 1623 struct fcoe_port *port; 1624 struct fc_lport *lport; 1625 1626 port = container_of(work, struct fcoe_port, destroy_work); 1627 lport = port->lport; 1628 1629 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n"); 1630 1631 bnx2fc_if_destroy(lport); 1632 } 1633 1634 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) 1635 { 1636 bnx2fc_free_fw_resc(hba); 1637 bnx2fc_free_task_ctx(hba); 1638 } 1639 1640 /** 1641 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated 1642 * pci structure 1643 * 1644 * @hba: Adapter instance 1645 */ 1646 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) 1647 { 1648 if (bnx2fc_setup_task_ctx(hba)) 1649 goto mem_err; 1650 1651 if (bnx2fc_setup_fw_resc(hba)) 1652 goto mem_err; 1653 1654 return 0; 1655 mem_err: 1656 bnx2fc_unbind_adapter_devices(hba); 1657 return -ENOMEM; 1658 } 1659 1660 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) 1661 { 1662 struct cnic_dev *cnic; 1663 struct pci_dev *pdev; 1664 1665 if (!hba->cnic) { 1666 printk(KERN_ERR PFX "cnic is NULL\n"); 1667 return -ENODEV; 1668 } 1669 cnic = hba->cnic; 1670 pdev = hba->pcidev = cnic->pcidev; 1671 if (!hba->pcidev) 1672 return -ENODEV; 1673 1674 switch (pdev->device) { 1675 case PCI_DEVICE_ID_NX2_57710: 1676 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN); 1677 break; 1678 case PCI_DEVICE_ID_NX2_57711: 1679 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN); 1680 break; 1681 case PCI_DEVICE_ID_NX2_57712: 1682 case PCI_DEVICE_ID_NX2_57712_MF: 1683 case PCI_DEVICE_ID_NX2_57712_VF: 1684 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN); 1685 break; 1686 case PCI_DEVICE_ID_NX2_57800: 1687 case PCI_DEVICE_ID_NX2_57800_MF: 1688 case PCI_DEVICE_ID_NX2_57800_VF: 1689 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN); 1690 break; 1691 case PCI_DEVICE_ID_NX2_57810: 1692 case PCI_DEVICE_ID_NX2_57810_MF: 1693 case PCI_DEVICE_ID_NX2_57810_VF: 1694 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN); 1695 break; 1696 case PCI_DEVICE_ID_NX2_57840: 1697 case PCI_DEVICE_ID_NX2_57840_MF: 1698 case PCI_DEVICE_ID_NX2_57840_VF: 1699 case PCI_DEVICE_ID_NX2_57840_2_20: 1700 case PCI_DEVICE_ID_NX2_57840_4_10: 1701 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN); 1702 break; 1703 default: 1704 pr_err(PFX "Unknown device id 0x%x\n", pdev->device); 1705 break; 1706 } 1707 pci_dev_get(hba->pcidev); 1708 return 0; 1709 } 1710 1711 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) 1712 { 1713 if (hba->pcidev) { 1714 hba->chip_num[0] = '\0'; 1715 pci_dev_put(hba->pcidev); 1716 } 1717 hba->pcidev = NULL; 1718 } 1719 1720 /** 1721 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats 1722 * 1723 * @handle: transport handle pointing to adapter struture 1724 */ 1725 static int bnx2fc_ulp_get_stats(void *handle) 1726 { 1727 struct bnx2fc_hba *hba = handle; 1728 struct cnic_dev *cnic; 1729 struct fcoe_stats_info *stats_addr; 1730 1731 if (!hba) 1732 return -EINVAL; 1733 1734 cnic = hba->cnic; 1735 stats_addr = &cnic->stats_addr->fcoe_stat; 1736 if (!stats_addr) 1737 return -EINVAL; 1738 1739 strncpy(stats_addr->version, BNX2FC_VERSION, 1740 sizeof(stats_addr->version)); 1741 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX; 1742 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX; 1743 1744 return 0; 1745 } 1746 1747 1748 /** 1749 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance 1750 * 1751 * @handle: transport handle pointing to adapter structure 1752 * 1753 * This function maps adapter structure to pcidev structure and initiates 1754 * firmware handshake to enable/initialize on-chip FCoE components. 1755 * This bnx2fc - cnic interface api callback is used after following 1756 * conditions are met - 1757 * a) underlying network interface is up (marked by event NETDEV_UP 1758 * from netdev 1759 * b) bnx2fc adatper structure is registered. 1760 */ 1761 static void bnx2fc_ulp_start(void *handle) 1762 { 1763 struct bnx2fc_hba *hba = handle; 1764 struct bnx2fc_interface *interface; 1765 struct fcoe_ctlr *ctlr; 1766 struct fc_lport *lport; 1767 1768 mutex_lock(&bnx2fc_dev_lock); 1769 1770 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1771 bnx2fc_fw_init(hba); 1772 1773 BNX2FC_MISC_DBG("bnx2fc started.\n"); 1774 1775 list_for_each_entry(interface, &if_list, list) { 1776 if (interface->hba == hba) { 1777 ctlr = bnx2fc_to_ctlr(interface); 1778 lport = ctlr->lp; 1779 /* Kick off Fabric discovery*/ 1780 printk(KERN_ERR PFX "ulp_init: start discovery\n"); 1781 lport->tt.frame_send = bnx2fc_xmit; 1782 bnx2fc_start_disc(interface); 1783 } 1784 } 1785 1786 mutex_unlock(&bnx2fc_dev_lock); 1787 } 1788 1789 static void bnx2fc_port_shutdown(struct fc_lport *lport) 1790 { 1791 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1792 fc_fabric_logoff(lport); 1793 fc_lport_destroy(lport); 1794 } 1795 1796 static void bnx2fc_stop(struct bnx2fc_interface *interface) 1797 { 1798 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1799 struct fc_lport *lport; 1800 struct fc_lport *vport; 1801 1802 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) 1803 return; 1804 1805 lport = ctlr->lp; 1806 bnx2fc_port_shutdown(lport); 1807 1808 mutex_lock(&lport->lp_mutex); 1809 list_for_each_entry(vport, &lport->vports, list) 1810 fc_host_port_type(vport->host) = 1811 FC_PORTTYPE_UNKNOWN; 1812 mutex_unlock(&lport->lp_mutex); 1813 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1814 fcoe_ctlr_link_down(ctlr); 1815 fcoe_clean_pending_queue(lport); 1816 } 1817 1818 static int bnx2fc_fw_init(struct bnx2fc_hba *hba) 1819 { 1820 #define BNX2FC_INIT_POLL_TIME (1000 / HZ) 1821 int rc = -1; 1822 int i = HZ; 1823 1824 rc = bnx2fc_bind_adapter_devices(hba); 1825 if (rc) { 1826 printk(KERN_ALERT PFX 1827 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); 1828 goto err_out; 1829 } 1830 1831 rc = bnx2fc_send_fw_fcoe_init_msg(hba); 1832 if (rc) { 1833 printk(KERN_ALERT PFX 1834 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); 1835 goto err_unbind; 1836 } 1837 1838 /* 1839 * Wait until the adapter init message is complete, and adapter 1840 * state is UP. 1841 */ 1842 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) 1843 msleep(BNX2FC_INIT_POLL_TIME); 1844 1845 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { 1846 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " 1847 "Ignoring...\n", 1848 hba->cnic->netdev->name); 1849 rc = -1; 1850 goto err_unbind; 1851 } 1852 1853 1854 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); 1855 return 0; 1856 1857 err_unbind: 1858 bnx2fc_unbind_adapter_devices(hba); 1859 err_out: 1860 return rc; 1861 } 1862 1863 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) 1864 { 1865 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { 1866 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { 1867 init_timer(&hba->destroy_timer); 1868 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + 1869 jiffies; 1870 hba->destroy_timer.function = bnx2fc_destroy_timer; 1871 hba->destroy_timer.data = (unsigned long)hba; 1872 add_timer(&hba->destroy_timer); 1873 wait_event_interruptible(hba->destroy_wait, 1874 test_bit(BNX2FC_FLAG_DESTROY_CMPL, 1875 &hba->flags)); 1876 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 1877 /* This should never happen */ 1878 if (signal_pending(current)) 1879 flush_signals(current); 1880 1881 del_timer_sync(&hba->destroy_timer); 1882 } 1883 bnx2fc_unbind_adapter_devices(hba); 1884 } 1885 } 1886 1887 /** 1888 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance 1889 * 1890 * @handle: transport handle pointing to adapter structure 1891 * 1892 * Driver checks if adapter is already in shutdown mode, if not start 1893 * the shutdown process. 1894 */ 1895 static void bnx2fc_ulp_stop(void *handle) 1896 { 1897 struct bnx2fc_hba *hba = handle; 1898 struct bnx2fc_interface *interface; 1899 1900 printk(KERN_ERR "ULP_STOP\n"); 1901 1902 mutex_lock(&bnx2fc_dev_lock); 1903 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1904 goto exit; 1905 list_for_each_entry(interface, &if_list, list) { 1906 if (interface->hba == hba) 1907 bnx2fc_stop(interface); 1908 } 1909 BUG_ON(hba->num_ofld_sess != 0); 1910 1911 mutex_lock(&hba->hba_mutex); 1912 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 1913 clear_bit(ADAPTER_STATE_GOING_DOWN, 1914 &hba->adapter_state); 1915 1916 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 1917 mutex_unlock(&hba->hba_mutex); 1918 1919 bnx2fc_fw_destroy(hba); 1920 exit: 1921 mutex_unlock(&bnx2fc_dev_lock); 1922 } 1923 1924 static void bnx2fc_start_disc(struct bnx2fc_interface *interface) 1925 { 1926 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1927 struct fc_lport *lport; 1928 int wait_cnt = 0; 1929 1930 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1931 /* Kick off FIP/FLOGI */ 1932 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1933 printk(KERN_ERR PFX "Init not done yet\n"); 1934 return; 1935 } 1936 1937 lport = ctlr->lp; 1938 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); 1939 1940 if (!bnx2fc_link_ok(lport) && interface->enabled) { 1941 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); 1942 fcoe_ctlr_link_up(ctlr); 1943 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 1944 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 1945 } 1946 1947 /* wait for the FCF to be selected before issuing FLOGI */ 1948 while (!ctlr->sel_fcf) { 1949 msleep(250); 1950 /* give up after 3 secs */ 1951 if (++wait_cnt > 12) 1952 break; 1953 } 1954 1955 /* Reset max receive frame size to default */ 1956 if (fc_set_mfs(lport, BNX2FC_MFS)) 1957 return; 1958 1959 fc_lport_init(lport); 1960 fc_fabric_login(lport); 1961 } 1962 1963 1964 /** 1965 * bnx2fc_ulp_init - Initialize an adapter instance 1966 * 1967 * @dev : cnic device handle 1968 * Called from cnic_register_driver() context to initialize all 1969 * enumerated cnic devices. This routine allocates adapter structure 1970 * and other device specific resources. 1971 */ 1972 static void bnx2fc_ulp_init(struct cnic_dev *dev) 1973 { 1974 struct bnx2fc_hba *hba; 1975 int rc = 0; 1976 1977 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1978 /* bnx2fc works only when bnx2x is loaded */ 1979 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || 1980 (dev->max_fcoe_conn == 0)) { 1981 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," 1982 " flags: %lx fcoe_conn: %d\n", 1983 dev->netdev->name, dev->flags, dev->max_fcoe_conn); 1984 return; 1985 } 1986 1987 hba = bnx2fc_hba_create(dev); 1988 if (!hba) { 1989 printk(KERN_ERR PFX "hba initialization failed\n"); 1990 return; 1991 } 1992 1993 /* Add HBA to the adapter list */ 1994 mutex_lock(&bnx2fc_dev_lock); 1995 list_add_tail(&hba->list, &adapter_list); 1996 adapter_count++; 1997 mutex_unlock(&bnx2fc_dev_lock); 1998 1999 dev->fcoe_cap = &hba->fcoe_cap; 2000 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2001 rc = dev->register_device(dev, CNIC_ULP_FCOE, 2002 (void *) hba); 2003 if (rc) 2004 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); 2005 else 2006 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2007 } 2008 2009 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */ 2010 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr) 2011 { 2012 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2013 2014 if (interface->enabled == true) { 2015 if (!ctlr->lp) { 2016 pr_err(PFX "__bnx2fc_disable: lport not found\n"); 2017 return -ENODEV; 2018 } else { 2019 interface->enabled = false; 2020 fcoe_ctlr_link_down(ctlr); 2021 fcoe_clean_pending_queue(ctlr->lp); 2022 } 2023 } 2024 return 0; 2025 } 2026 2027 /** 2028 * Deperecated: Use bnx2fc_enabled() 2029 */ 2030 static int bnx2fc_disable(struct net_device *netdev) 2031 { 2032 struct bnx2fc_interface *interface; 2033 struct fcoe_ctlr *ctlr; 2034 int rc = 0; 2035 2036 rtnl_lock(); 2037 mutex_lock(&bnx2fc_dev_lock); 2038 2039 interface = bnx2fc_interface_lookup(netdev); 2040 ctlr = bnx2fc_to_ctlr(interface); 2041 2042 if (!interface) { 2043 rc = -ENODEV; 2044 pr_err(PFX "bnx2fc_disable: interface not found\n"); 2045 } else { 2046 rc = __bnx2fc_disable(ctlr); 2047 } 2048 mutex_unlock(&bnx2fc_dev_lock); 2049 rtnl_unlock(); 2050 return rc; 2051 } 2052 2053 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport, 2054 struct cnic_fc_npiv_tbl *npiv_tbl) 2055 { 2056 struct fc_vport_identifiers vpid; 2057 uint i, created = 0; 2058 2059 if (npiv_tbl->count > MAX_NPIV_ENTRIES) { 2060 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n"); 2061 goto done; 2062 } 2063 2064 /* Sanity check the first entry to make sure it's not 0 */ 2065 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 && 2066 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) { 2067 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n"); 2068 goto done; 2069 } 2070 2071 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR; 2072 vpid.vport_type = FC_PORTTYPE_NPIV; 2073 vpid.disable = false; 2074 2075 for (i = 0; i < npiv_tbl->count; i++) { 2076 vpid.node_name = wwn_to_u64(npiv_tbl->wwnn[i]); 2077 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]); 2078 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name), 2079 "NPIV[%u]:%016llx-%016llx", 2080 created, vpid.port_name, vpid.node_name); 2081 if (fc_vport_create(lport->host, 0, &vpid)) 2082 created++; 2083 else 2084 BNX2FC_HBA_DBG(lport, "Failed to create vport\n"); 2085 } 2086 done: 2087 return created; 2088 } 2089 2090 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr) 2091 { 2092 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2093 struct bnx2fc_hba *hba; 2094 struct cnic_fc_npiv_tbl *npiv_tbl; 2095 struct fc_lport *lport; 2096 2097 if (interface->enabled == false) { 2098 if (!ctlr->lp) { 2099 pr_err(PFX "__bnx2fc_enable: lport not found\n"); 2100 return -ENODEV; 2101 } else if (!bnx2fc_link_ok(ctlr->lp)) { 2102 fcoe_ctlr_link_up(ctlr); 2103 interface->enabled = true; 2104 } 2105 } 2106 2107 /* Create static NPIV ports if any are contained in NVRAM */ 2108 hba = interface->hba; 2109 lport = ctlr->lp; 2110 2111 if (!hba) 2112 goto done; 2113 2114 if (!hba->cnic) 2115 goto done; 2116 2117 if (!lport) 2118 goto done; 2119 2120 if (!lport->host) 2121 goto done; 2122 2123 if (!hba->cnic->get_fc_npiv_tbl) 2124 goto done; 2125 2126 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL); 2127 if (!npiv_tbl) 2128 goto done; 2129 2130 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl)) 2131 goto done_free; 2132 2133 bnx2fc_npiv_create_vports(lport, npiv_tbl); 2134 done_free: 2135 kfree(npiv_tbl); 2136 done: 2137 return 0; 2138 } 2139 2140 /** 2141 * Deprecated: Use bnx2fc_enabled() 2142 */ 2143 static int bnx2fc_enable(struct net_device *netdev) 2144 { 2145 struct bnx2fc_interface *interface; 2146 struct fcoe_ctlr *ctlr; 2147 int rc = 0; 2148 2149 rtnl_lock(); 2150 mutex_lock(&bnx2fc_dev_lock); 2151 2152 interface = bnx2fc_interface_lookup(netdev); 2153 ctlr = bnx2fc_to_ctlr(interface); 2154 if (!interface) { 2155 rc = -ENODEV; 2156 pr_err(PFX "bnx2fc_enable: interface not found\n"); 2157 } else { 2158 rc = __bnx2fc_enable(ctlr); 2159 } 2160 2161 mutex_unlock(&bnx2fc_dev_lock); 2162 rtnl_unlock(); 2163 return rc; 2164 } 2165 2166 /** 2167 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller 2168 * @cdev: The FCoE Controller that is being enabled or disabled 2169 * 2170 * fcoe_sysfs will ensure that the state of 'enabled' has 2171 * changed, so no checking is necessary here. This routine simply 2172 * calls fcoe_enable or fcoe_disable, both of which are deprecated. 2173 * When those routines are removed the functionality can be merged 2174 * here. 2175 */ 2176 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev) 2177 { 2178 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); 2179 2180 switch (cdev->enabled) { 2181 case FCOE_CTLR_ENABLED: 2182 return __bnx2fc_enable(ctlr); 2183 case FCOE_CTLR_DISABLED: 2184 return __bnx2fc_disable(ctlr); 2185 case FCOE_CTLR_UNUSED: 2186 default: 2187 return -ENOTSUPP; 2188 }; 2189 } 2190 2191 enum bnx2fc_create_link_state { 2192 BNX2FC_CREATE_LINK_DOWN, 2193 BNX2FC_CREATE_LINK_UP, 2194 }; 2195 2196 /** 2197 * _bnx2fc_create() - Create bnx2fc FCoE interface 2198 * @netdev : The net_device object the Ethernet interface to create on 2199 * @fip_mode: The FIP mode for this creation 2200 * @link_state: The ctlr link state on creation 2201 * 2202 * Called from either the libfcoe 'create' module parameter 2203 * via fcoe_create or from fcoe_syfs's ctlr_create file. 2204 * 2205 * libfcoe's 'create' module parameter is deprecated so some 2206 * consolidation of code can be done when that interface is 2207 * removed. 2208 * 2209 * Returns: 0 for success 2210 */ 2211 static int _bnx2fc_create(struct net_device *netdev, 2212 enum fip_state fip_mode, 2213 enum bnx2fc_create_link_state link_state) 2214 { 2215 struct fcoe_ctlr_device *cdev; 2216 struct fcoe_ctlr *ctlr; 2217 struct bnx2fc_interface *interface; 2218 struct bnx2fc_hba *hba; 2219 struct net_device *phys_dev = netdev; 2220 struct fc_lport *lport; 2221 struct ethtool_drvinfo drvinfo; 2222 int rc = 0; 2223 int vlan_id = 0; 2224 2225 BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); 2226 if (fip_mode != FIP_MODE_FABRIC) { 2227 printk(KERN_ERR "fip mode not FABRIC\n"); 2228 return -EIO; 2229 } 2230 2231 rtnl_lock(); 2232 2233 mutex_lock(&bnx2fc_dev_lock); 2234 2235 if (!try_module_get(THIS_MODULE)) { 2236 rc = -EINVAL; 2237 goto mod_err; 2238 } 2239 2240 /* obtain physical netdev */ 2241 if (netdev->priv_flags & IFF_802_1Q_VLAN) 2242 phys_dev = vlan_dev_real_dev(netdev); 2243 2244 /* verify if the physical device is a netxtreme2 device */ 2245 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { 2246 memset(&drvinfo, 0, sizeof(drvinfo)); 2247 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); 2248 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { 2249 printk(KERN_ERR PFX "Not a netxtreme2 device\n"); 2250 rc = -EINVAL; 2251 goto netdev_err; 2252 } 2253 } else { 2254 printk(KERN_ERR PFX "unable to obtain drv_info\n"); 2255 rc = -EINVAL; 2256 goto netdev_err; 2257 } 2258 2259 /* obtain interface and initialize rest of the structure */ 2260 hba = bnx2fc_hba_lookup(phys_dev); 2261 if (!hba) { 2262 rc = -ENODEV; 2263 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); 2264 goto netdev_err; 2265 } 2266 2267 if (bnx2fc_interface_lookup(netdev)) { 2268 rc = -EEXIST; 2269 goto netdev_err; 2270 } 2271 2272 interface = bnx2fc_interface_create(hba, netdev, fip_mode); 2273 if (!interface) { 2274 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); 2275 rc = -ENOMEM; 2276 goto ifput_err; 2277 } 2278 2279 if (netdev->priv_flags & IFF_802_1Q_VLAN) { 2280 vlan_id = vlan_dev_vlan_id(netdev); 2281 interface->vlan_enabled = 1; 2282 } 2283 2284 ctlr = bnx2fc_to_ctlr(interface); 2285 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 2286 interface->vlan_id = vlan_id; 2287 2288 interface->timer_work_queue = 2289 create_singlethread_workqueue("bnx2fc_timer_wq"); 2290 if (!interface->timer_work_queue) { 2291 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); 2292 rc = -EINVAL; 2293 goto ifput_err; 2294 } 2295 2296 lport = bnx2fc_if_create(interface, &cdev->dev, 0); 2297 if (!lport) { 2298 printk(KERN_ERR PFX "Failed to create interface (%s)\n", 2299 netdev->name); 2300 rc = -EINVAL; 2301 goto if_create_err; 2302 } 2303 2304 /* Add interface to if_list */ 2305 list_add_tail(&interface->list, &if_list); 2306 2307 lport->boot_time = jiffies; 2308 2309 /* Make this master N_port */ 2310 ctlr->lp = lport; 2311 2312 if (link_state == BNX2FC_CREATE_LINK_UP) 2313 cdev->enabled = FCOE_CTLR_ENABLED; 2314 else 2315 cdev->enabled = FCOE_CTLR_DISABLED; 2316 2317 if (link_state == BNX2FC_CREATE_LINK_UP && 2318 !bnx2fc_link_ok(lport)) { 2319 fcoe_ctlr_link_up(ctlr); 2320 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2321 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2322 } 2323 2324 BNX2FC_HBA_DBG(lport, "create: START DISC\n"); 2325 bnx2fc_start_disc(interface); 2326 2327 if (link_state == BNX2FC_CREATE_LINK_UP) 2328 interface->enabled = true; 2329 2330 /* 2331 * Release from kref_init in bnx2fc_interface_setup, on success 2332 * lport should be holding a reference taken in bnx2fc_if_create 2333 */ 2334 bnx2fc_interface_put(interface); 2335 /* put netdev that was held while calling dev_get_by_name */ 2336 mutex_unlock(&bnx2fc_dev_lock); 2337 rtnl_unlock(); 2338 return 0; 2339 2340 if_create_err: 2341 destroy_workqueue(interface->timer_work_queue); 2342 ifput_err: 2343 bnx2fc_net_cleanup(interface); 2344 bnx2fc_interface_put(interface); 2345 goto mod_err; 2346 netdev_err: 2347 module_put(THIS_MODULE); 2348 mod_err: 2349 mutex_unlock(&bnx2fc_dev_lock); 2350 rtnl_unlock(); 2351 return rc; 2352 } 2353 2354 /** 2355 * bnx2fc_create() - Create a bnx2fc interface 2356 * @netdev : The net_device object the Ethernet interface to create on 2357 * @fip_mode: The FIP mode for this creation 2358 * 2359 * Called from fcoe transport 2360 * 2361 * Returns: 0 for success 2362 */ 2363 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode) 2364 { 2365 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP); 2366 } 2367 2368 /** 2369 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs 2370 * @netdev: The net_device to be used by the allocated FCoE Controller 2371 * 2372 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr 2373 * in a link_down state. The allows the user an opportunity to configure 2374 * the FCoE Controller from sysfs before enabling the FCoE Controller. 2375 * 2376 * Creating in with this routine starts the FCoE Controller in Fabric 2377 * mode. The user can change to VN2VN or another mode before enabling. 2378 */ 2379 static int bnx2fc_ctlr_alloc(struct net_device *netdev) 2380 { 2381 return _bnx2fc_create(netdev, FIP_MODE_FABRIC, 2382 BNX2FC_CREATE_LINK_DOWN); 2383 } 2384 2385 /** 2386 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance 2387 * 2388 * @cnic: Pointer to cnic device instance 2389 * 2390 **/ 2391 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) 2392 { 2393 struct bnx2fc_hba *hba; 2394 2395 /* Called with bnx2fc_dev_lock held */ 2396 list_for_each_entry(hba, &adapter_list, list) { 2397 if (hba->cnic == cnic) 2398 return hba; 2399 } 2400 return NULL; 2401 } 2402 2403 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 2404 *netdev) 2405 { 2406 struct bnx2fc_interface *interface; 2407 2408 /* Called with bnx2fc_dev_lock held */ 2409 list_for_each_entry(interface, &if_list, list) { 2410 if (interface->netdev == netdev) 2411 return interface; 2412 } 2413 return NULL; 2414 } 2415 2416 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device 2417 *phys_dev) 2418 { 2419 struct bnx2fc_hba *hba; 2420 2421 /* Called with bnx2fc_dev_lock held */ 2422 list_for_each_entry(hba, &adapter_list, list) { 2423 if (hba->phys_dev == phys_dev) 2424 return hba; 2425 } 2426 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); 2427 return NULL; 2428 } 2429 2430 /** 2431 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources 2432 * 2433 * @dev cnic device handle 2434 */ 2435 static void bnx2fc_ulp_exit(struct cnic_dev *dev) 2436 { 2437 struct bnx2fc_hba *hba; 2438 struct bnx2fc_interface *interface, *tmp; 2439 2440 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); 2441 2442 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { 2443 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", 2444 dev->netdev->name, dev->flags); 2445 return; 2446 } 2447 2448 mutex_lock(&bnx2fc_dev_lock); 2449 hba = bnx2fc_find_hba_for_cnic(dev); 2450 if (!hba) { 2451 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", 2452 dev); 2453 mutex_unlock(&bnx2fc_dev_lock); 2454 return; 2455 } 2456 2457 list_del_init(&hba->list); 2458 adapter_count--; 2459 2460 list_for_each_entry_safe(interface, tmp, &if_list, list) 2461 /* destroy not called yet, move to quiesced list */ 2462 if (interface->hba == hba) 2463 __bnx2fc_destroy(interface); 2464 mutex_unlock(&bnx2fc_dev_lock); 2465 2466 /* Ensure ALL destroy work has been completed before return */ 2467 flush_workqueue(bnx2fc_wq); 2468 2469 bnx2fc_ulp_stop(hba); 2470 /* unregister cnic device */ 2471 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) 2472 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); 2473 bnx2fc_hba_destroy(hba); 2474 } 2475 2476 /** 2477 * bnx2fc_fcoe_reset - Resets the fcoe 2478 * 2479 * @shost: shost the reset is from 2480 * 2481 * Returns: always 0 2482 */ 2483 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) 2484 { 2485 struct fc_lport *lport = shost_priv(shost); 2486 fc_lport_reset(lport); 2487 return 0; 2488 } 2489 2490 2491 static bool bnx2fc_match(struct net_device *netdev) 2492 { 2493 struct net_device *phys_dev = netdev; 2494 2495 mutex_lock(&bnx2fc_dev_lock); 2496 if (netdev->priv_flags & IFF_802_1Q_VLAN) 2497 phys_dev = vlan_dev_real_dev(netdev); 2498 2499 if (bnx2fc_hba_lookup(phys_dev)) { 2500 mutex_unlock(&bnx2fc_dev_lock); 2501 return true; 2502 } 2503 2504 mutex_unlock(&bnx2fc_dev_lock); 2505 return false; 2506 } 2507 2508 2509 static struct fcoe_transport bnx2fc_transport = { 2510 .name = {"bnx2fc"}, 2511 .attached = false, 2512 .list = LIST_HEAD_INIT(bnx2fc_transport.list), 2513 .alloc = bnx2fc_ctlr_alloc, 2514 .match = bnx2fc_match, 2515 .create = bnx2fc_create, 2516 .destroy = bnx2fc_destroy, 2517 .enable = bnx2fc_enable, 2518 .disable = bnx2fc_disable, 2519 }; 2520 2521 /** 2522 * bnx2fc_percpu_thread_create - Create a receive thread for an 2523 * online CPU 2524 * 2525 * @cpu: cpu index for the online cpu 2526 */ 2527 static void bnx2fc_percpu_thread_create(unsigned int cpu) 2528 { 2529 struct bnx2fc_percpu_s *p; 2530 struct task_struct *thread; 2531 2532 p = &per_cpu(bnx2fc_percpu, cpu); 2533 2534 thread = kthread_create_on_node(bnx2fc_percpu_io_thread, 2535 (void *)p, cpu_to_node(cpu), 2536 "bnx2fc_thread/%d", cpu); 2537 /* bind thread to the cpu */ 2538 if (likely(!IS_ERR(thread))) { 2539 kthread_bind(thread, cpu); 2540 p->iothread = thread; 2541 wake_up_process(thread); 2542 } 2543 } 2544 2545 static void bnx2fc_percpu_thread_destroy(unsigned int cpu) 2546 { 2547 struct bnx2fc_percpu_s *p; 2548 struct task_struct *thread; 2549 struct bnx2fc_work *work, *tmp; 2550 2551 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); 2552 2553 /* Prevent any new work from being queued for this CPU */ 2554 p = &per_cpu(bnx2fc_percpu, cpu); 2555 spin_lock_bh(&p->fp_work_lock); 2556 thread = p->iothread; 2557 p->iothread = NULL; 2558 2559 2560 /* Free all work in the list */ 2561 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 2562 list_del_init(&work->list); 2563 bnx2fc_process_cq_compl(work->tgt, work->wqe); 2564 kfree(work); 2565 } 2566 2567 spin_unlock_bh(&p->fp_work_lock); 2568 2569 if (thread) 2570 kthread_stop(thread); 2571 } 2572 2573 /** 2574 * bnx2fc_cpu_callback - Handler for CPU hotplug events 2575 * 2576 * @nfb: The callback data block 2577 * @action: The event triggering the callback 2578 * @hcpu: The index of the CPU that the event is for 2579 * 2580 * This creates or destroys per-CPU data for fcoe 2581 * 2582 * Returns NOTIFY_OK always. 2583 */ 2584 static int bnx2fc_cpu_callback(struct notifier_block *nfb, 2585 unsigned long action, void *hcpu) 2586 { 2587 unsigned cpu = (unsigned long)hcpu; 2588 2589 switch (action) { 2590 case CPU_ONLINE: 2591 case CPU_ONLINE_FROZEN: 2592 printk(PFX "CPU %x online: Create Rx thread\n", cpu); 2593 bnx2fc_percpu_thread_create(cpu); 2594 break; 2595 case CPU_DEAD: 2596 case CPU_DEAD_FROZEN: 2597 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu); 2598 bnx2fc_percpu_thread_destroy(cpu); 2599 break; 2600 default: 2601 break; 2602 } 2603 return NOTIFY_OK; 2604 } 2605 2606 /** 2607 * bnx2fc_mod_init - module init entry point 2608 * 2609 * Initialize driver wide global data structures, and register 2610 * with cnic module 2611 **/ 2612 static int __init bnx2fc_mod_init(void) 2613 { 2614 struct fcoe_percpu_s *bg; 2615 struct task_struct *l2_thread; 2616 int rc = 0; 2617 unsigned int cpu = 0; 2618 struct bnx2fc_percpu_s *p; 2619 2620 printk(KERN_INFO PFX "%s", version); 2621 2622 /* register as a fcoe transport */ 2623 rc = fcoe_transport_attach(&bnx2fc_transport); 2624 if (rc) { 2625 printk(KERN_ERR "failed to register an fcoe transport, check " 2626 "if libfcoe is loaded\n"); 2627 goto out; 2628 } 2629 2630 INIT_LIST_HEAD(&adapter_list); 2631 INIT_LIST_HEAD(&if_list); 2632 mutex_init(&bnx2fc_dev_lock); 2633 adapter_count = 0; 2634 2635 /* Attach FC transport template */ 2636 rc = bnx2fc_attach_transport(); 2637 if (rc) 2638 goto detach_ft; 2639 2640 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); 2641 if (!bnx2fc_wq) { 2642 rc = -ENOMEM; 2643 goto release_bt; 2644 } 2645 2646 bg = &bnx2fc_global; 2647 skb_queue_head_init(&bg->fcoe_rx_list); 2648 l2_thread = kthread_create(bnx2fc_l2_rcv_thread, 2649 (void *)bg, 2650 "bnx2fc_l2_thread"); 2651 if (IS_ERR(l2_thread)) { 2652 rc = PTR_ERR(l2_thread); 2653 goto free_wq; 2654 } 2655 wake_up_process(l2_thread); 2656 spin_lock_bh(&bg->fcoe_rx_list.lock); 2657 bg->thread = l2_thread; 2658 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2659 2660 for_each_possible_cpu(cpu) { 2661 p = &per_cpu(bnx2fc_percpu, cpu); 2662 INIT_LIST_HEAD(&p->work_list); 2663 spin_lock_init(&p->fp_work_lock); 2664 } 2665 2666 cpu_notifier_register_begin(); 2667 2668 for_each_online_cpu(cpu) { 2669 bnx2fc_percpu_thread_create(cpu); 2670 } 2671 2672 /* Initialize per CPU interrupt thread */ 2673 __register_hotcpu_notifier(&bnx2fc_cpu_notifier); 2674 2675 cpu_notifier_register_done(); 2676 2677 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); 2678 2679 return 0; 2680 2681 free_wq: 2682 destroy_workqueue(bnx2fc_wq); 2683 release_bt: 2684 bnx2fc_release_transport(); 2685 detach_ft: 2686 fcoe_transport_detach(&bnx2fc_transport); 2687 out: 2688 return rc; 2689 } 2690 2691 static void __exit bnx2fc_mod_exit(void) 2692 { 2693 LIST_HEAD(to_be_deleted); 2694 struct bnx2fc_hba *hba, *next; 2695 struct fcoe_percpu_s *bg; 2696 struct task_struct *l2_thread; 2697 struct sk_buff *skb; 2698 unsigned int cpu = 0; 2699 2700 /* 2701 * NOTE: Since cnic calls register_driver routine rtnl_lock, 2702 * it will have higher precedence than bnx2fc_dev_lock. 2703 * unregister_device() cannot be called with bnx2fc_dev_lock 2704 * held. 2705 */ 2706 mutex_lock(&bnx2fc_dev_lock); 2707 list_splice(&adapter_list, &to_be_deleted); 2708 INIT_LIST_HEAD(&adapter_list); 2709 adapter_count = 0; 2710 mutex_unlock(&bnx2fc_dev_lock); 2711 2712 /* Unregister with cnic */ 2713 list_for_each_entry_safe(hba, next, &to_be_deleted, list) { 2714 list_del_init(&hba->list); 2715 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", 2716 hba); 2717 bnx2fc_ulp_stop(hba); 2718 /* unregister cnic device */ 2719 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, 2720 &hba->reg_with_cnic)) 2721 hba->cnic->unregister_device(hba->cnic, 2722 CNIC_ULP_FCOE); 2723 bnx2fc_hba_destroy(hba); 2724 } 2725 cnic_unregister_driver(CNIC_ULP_FCOE); 2726 2727 /* Destroy global thread */ 2728 bg = &bnx2fc_global; 2729 spin_lock_bh(&bg->fcoe_rx_list.lock); 2730 l2_thread = bg->thread; 2731 bg->thread = NULL; 2732 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) 2733 kfree_skb(skb); 2734 2735 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2736 2737 if (l2_thread) 2738 kthread_stop(l2_thread); 2739 2740 cpu_notifier_register_begin(); 2741 2742 /* Destroy per cpu threads */ 2743 for_each_online_cpu(cpu) { 2744 bnx2fc_percpu_thread_destroy(cpu); 2745 } 2746 2747 __unregister_hotcpu_notifier(&bnx2fc_cpu_notifier); 2748 2749 cpu_notifier_register_done(); 2750 2751 destroy_workqueue(bnx2fc_wq); 2752 /* 2753 * detach from scsi transport 2754 * must happen after all destroys are done 2755 */ 2756 bnx2fc_release_transport(); 2757 2758 /* detach from fcoe transport */ 2759 fcoe_transport_detach(&bnx2fc_transport); 2760 } 2761 2762 module_init(bnx2fc_mod_init); 2763 module_exit(bnx2fc_mod_exit); 2764 2765 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { 2766 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, 2767 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, 2768 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, 2769 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, 2770 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, 2771 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, 2772 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, 2773 2774 .get_fcoe_fcf_selected = fcoe_fcf_get_selected, 2775 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, 2776 }; 2777 2778 static struct fc_function_template bnx2fc_transport_function = { 2779 .show_host_node_name = 1, 2780 .show_host_port_name = 1, 2781 .show_host_supported_classes = 1, 2782 .show_host_supported_fc4s = 1, 2783 .show_host_active_fc4s = 1, 2784 .show_host_maxframe_size = 1, 2785 2786 .show_host_port_id = 1, 2787 .show_host_supported_speeds = 1, 2788 .get_host_speed = fc_get_host_speed, 2789 .show_host_speed = 1, 2790 .show_host_port_type = 1, 2791 .get_host_port_state = fc_get_host_port_state, 2792 .show_host_port_state = 1, 2793 .show_host_symbolic_name = 1, 2794 2795 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2796 sizeof(struct bnx2fc_rport)), 2797 .show_rport_maxframe_size = 1, 2798 .show_rport_supported_classes = 1, 2799 2800 .show_host_fabric_name = 1, 2801 .show_starget_node_name = 1, 2802 .show_starget_port_name = 1, 2803 .show_starget_port_id = 1, 2804 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2805 .show_rport_dev_loss_tmo = 1, 2806 .get_fc_host_stats = bnx2fc_get_host_stats, 2807 2808 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2809 2810 .terminate_rport_io = fc_rport_terminate_io, 2811 2812 .vport_create = bnx2fc_vport_create, 2813 .vport_delete = bnx2fc_vport_destroy, 2814 .vport_disable = bnx2fc_vport_disable, 2815 .bsg_request = fc_lport_bsg_request, 2816 }; 2817 2818 static struct fc_function_template bnx2fc_vport_xport_function = { 2819 .show_host_node_name = 1, 2820 .show_host_port_name = 1, 2821 .show_host_supported_classes = 1, 2822 .show_host_supported_fc4s = 1, 2823 .show_host_active_fc4s = 1, 2824 .show_host_maxframe_size = 1, 2825 2826 .show_host_port_id = 1, 2827 .show_host_supported_speeds = 1, 2828 .get_host_speed = fc_get_host_speed, 2829 .show_host_speed = 1, 2830 .show_host_port_type = 1, 2831 .get_host_port_state = fc_get_host_port_state, 2832 .show_host_port_state = 1, 2833 .show_host_symbolic_name = 1, 2834 2835 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2836 sizeof(struct bnx2fc_rport)), 2837 .show_rport_maxframe_size = 1, 2838 .show_rport_supported_classes = 1, 2839 2840 .show_host_fabric_name = 1, 2841 .show_starget_node_name = 1, 2842 .show_starget_port_name = 1, 2843 .show_starget_port_id = 1, 2844 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2845 .show_rport_dev_loss_tmo = 1, 2846 .get_fc_host_stats = fc_get_host_stats, 2847 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2848 .terminate_rport_io = fc_rport_terminate_io, 2849 .bsg_request = fc_lport_bsg_request, 2850 }; 2851 2852 /** 2853 * scsi_host_template structure used while registering with SCSI-ml 2854 */ 2855 static struct scsi_host_template bnx2fc_shost_template = { 2856 .module = THIS_MODULE, 2857 .name = "QLogic Offload FCoE Initiator", 2858 .queuecommand = bnx2fc_queuecommand, 2859 .eh_abort_handler = bnx2fc_eh_abort, /* abts */ 2860 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ 2861 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ 2862 .eh_host_reset_handler = fc_eh_host_reset, 2863 .slave_alloc = fc_slave_alloc, 2864 .change_queue_depth = scsi_change_queue_depth, 2865 .this_id = -1, 2866 .cmd_per_lun = 3, 2867 .use_clustering = ENABLE_CLUSTERING, 2868 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, 2869 .max_sectors = 1024, 2870 .track_queue_depth = 1, 2871 }; 2872 2873 static struct libfc_function_template bnx2fc_libfc_fcn_templ = { 2874 .frame_send = bnx2fc_xmit, 2875 .elsct_send = bnx2fc_elsct_send, 2876 .fcp_abort_io = bnx2fc_abort_io, 2877 .fcp_cleanup = bnx2fc_cleanup, 2878 .get_lesb = fcoe_get_lesb, 2879 .rport_event_callback = bnx2fc_rport_event_handler, 2880 }; 2881 2882 /** 2883 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface 2884 * structure carrying callback function pointers 2885 */ 2886 static struct cnic_ulp_ops bnx2fc_cnic_cb = { 2887 .owner = THIS_MODULE, 2888 .cnic_init = bnx2fc_ulp_init, 2889 .cnic_exit = bnx2fc_ulp_exit, 2890 .cnic_start = bnx2fc_ulp_start, 2891 .cnic_stop = bnx2fc_ulp_stop, 2892 .indicate_kcqes = bnx2fc_indicate_kcqe, 2893 .indicate_netevent = bnx2fc_indicate_netevent, 2894 .cnic_get_stats = bnx2fc_ulp_get_stats, 2895 }; 2896