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