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