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