1 /* bnx2fc_fcoe.c: QLogic Linux FCoE offload driver. 2 * This file contains the code that interacts with libfc, libfcoe, 3 * cnic modules to create FCoE instances, send/receive non-offloaded 4 * FIP/FCoE packets, listen to link events etc. 5 * 6 * Copyright (c) 2008-2013 Broadcom Corporation 7 * Copyright (c) 2014-2015 QLogic Corporation 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation. 12 * 13 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com) 14 */ 15 16 #include "bnx2fc.h" 17 18 static struct list_head adapter_list; 19 static struct list_head if_list; 20 static u32 adapter_count; 21 static DEFINE_MUTEX(bnx2fc_dev_lock); 22 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu); 23 24 #define DRV_MODULE_NAME "bnx2fc" 25 #define DRV_MODULE_VERSION BNX2FC_VERSION 26 #define DRV_MODULE_RELDATE "October 15, 2015" 27 28 29 static char version[] = 30 "QLogic FCoE Driver " DRV_MODULE_NAME \ 31 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; 32 33 34 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>"); 35 MODULE_DESCRIPTION("QLogic FCoE Driver"); 36 MODULE_LICENSE("GPL"); 37 MODULE_VERSION(DRV_MODULE_VERSION); 38 39 #define BNX2FC_MAX_QUEUE_DEPTH 256 40 #define BNX2FC_MIN_QUEUE_DEPTH 32 41 #define FCOE_WORD_TO_BYTE 4 42 43 static struct scsi_transport_template *bnx2fc_transport_template; 44 static struct scsi_transport_template *bnx2fc_vport_xport_template; 45 46 struct workqueue_struct *bnx2fc_wq; 47 48 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure. 49 * Here the io threads are per cpu but the l2 thread is just one 50 */ 51 struct fcoe_percpu_s bnx2fc_global; 52 DEFINE_SPINLOCK(bnx2fc_global_lock); 53 54 static struct cnic_ulp_ops bnx2fc_cnic_cb; 55 static struct libfc_function_template bnx2fc_libfc_fcn_templ; 56 static struct scsi_host_template bnx2fc_shost_template; 57 static struct fc_function_template bnx2fc_transport_function; 58 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ; 59 static struct fc_function_template bnx2fc_vport_xport_function; 60 static int bnx2fc_create(struct net_device *netdev, enum fip_mode 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 MODULE_PARM_DESC(debug_logging, 101 "Option to enable extended logging,\n" 102 "\t\tDefault is 0 - no logging.\n" 103 "\t\t0x01 - SCSI cmd error, cleanup.\n" 104 "\t\t0x02 - Session setup, cleanup, etc.\n" 105 "\t\t0x04 - lport events, link, mtu, etc.\n" 106 "\t\t0x08 - ELS logs.\n" 107 "\t\t0x10 - fcoe L2 fame related logs.\n" 108 "\t\t0xff - LOG all messages."); 109 110 uint bnx2fc_devloss_tmo; 111 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO); 112 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports " 113 "attached via bnx2fc."); 114 115 uint bnx2fc_max_luns = BNX2FC_MAX_LUN; 116 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO); 117 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default " 118 "0xffff."); 119 120 uint bnx2fc_queue_depth; 121 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO); 122 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices " 123 "attached via bnx2fc."); 124 125 uint bnx2fc_log_fka; 126 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR); 127 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is " 128 "initiating a FIP keep alive when debug logging is enabled."); 129 130 static int bnx2fc_cpu_callback(struct notifier_block *nfb, 131 unsigned long action, void *hcpu); 132 /* notification function for CPU hotplug events */ 133 static struct notifier_block bnx2fc_cpu_notifier = { 134 .notifier_call = bnx2fc_cpu_callback, 135 }; 136 137 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport) 138 { 139 return ((struct bnx2fc_interface *) 140 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev; 141 } 142 143 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev) 144 { 145 struct fcoe_ctlr_device *ctlr_dev = 146 fcoe_fcf_dev_to_ctlr_dev(fcf_dev); 147 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); 148 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr); 149 150 fcf_dev->vlan_id = fcoe->vlan_id; 151 } 152 153 static void bnx2fc_clean_rx_queue(struct fc_lport *lp) 154 { 155 struct fcoe_percpu_s *bg; 156 struct fcoe_rcv_info *fr; 157 struct sk_buff_head *list; 158 struct sk_buff *skb, *next; 159 struct sk_buff *head; 160 161 bg = &bnx2fc_global; 162 spin_lock_bh(&bg->fcoe_rx_list.lock); 163 list = &bg->fcoe_rx_list; 164 head = list->next; 165 for (skb = head; skb != (struct sk_buff *)list; 166 skb = next) { 167 next = skb->next; 168 fr = fcoe_dev_from_skb(skb); 169 if (fr->fr_dev == lp) { 170 __skb_unlink(skb, list); 171 kfree_skb(skb); 172 } 173 } 174 spin_unlock_bh(&bg->fcoe_rx_list.lock); 175 } 176 177 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen) 178 { 179 int rc; 180 spin_lock(&bnx2fc_global_lock); 181 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global); 182 spin_unlock(&bnx2fc_global_lock); 183 184 return rc; 185 } 186 187 static void bnx2fc_abort_io(struct fc_lport *lport) 188 { 189 /* 190 * This function is no-op for bnx2fc, but we do 191 * not want to leave it as NULL either, as libfc 192 * can call the default function which is 193 * fc_fcp_abort_io. 194 */ 195 } 196 197 static void bnx2fc_cleanup(struct fc_lport *lport) 198 { 199 struct fcoe_port *port = lport_priv(lport); 200 struct bnx2fc_interface *interface = port->priv; 201 struct bnx2fc_hba *hba = interface->hba; 202 struct bnx2fc_rport *tgt; 203 int i; 204 205 BNX2FC_MISC_DBG("Entered %s\n", __func__); 206 mutex_lock(&hba->hba_mutex); 207 spin_lock_bh(&hba->hba_lock); 208 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) { 209 tgt = hba->tgt_ofld_list[i]; 210 if (tgt) { 211 /* Cleanup IOs belonging to requested vport */ 212 if (tgt->port == port) { 213 spin_unlock_bh(&hba->hba_lock); 214 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n"); 215 bnx2fc_flush_active_ios(tgt); 216 spin_lock_bh(&hba->hba_lock); 217 } 218 } 219 } 220 spin_unlock_bh(&hba->hba_lock); 221 mutex_unlock(&hba->hba_mutex); 222 } 223 224 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt, 225 struct fc_frame *fp) 226 { 227 struct fc_rport_priv *rdata = tgt->rdata; 228 struct fc_frame_header *fh; 229 int rc = 0; 230 231 fh = fc_frame_header_get(fp); 232 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, " 233 "r_ctl = 0x%x\n", rdata->ids.port_id, 234 ntohs(fh->fh_ox_id), fh->fh_r_ctl); 235 if ((fh->fh_type == FC_TYPE_ELS) && 236 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 237 238 switch (fc_frame_payload_op(fp)) { 239 case ELS_ADISC: 240 rc = bnx2fc_send_adisc(tgt, fp); 241 break; 242 case ELS_LOGO: 243 rc = bnx2fc_send_logo(tgt, fp); 244 break; 245 case ELS_RLS: 246 rc = bnx2fc_send_rls(tgt, fp); 247 break; 248 default: 249 break; 250 } 251 } else if ((fh->fh_type == FC_TYPE_BLS) && 252 (fh->fh_r_ctl == FC_RCTL_BA_ABTS)) 253 BNX2FC_TGT_DBG(tgt, "ABTS frame\n"); 254 else { 255 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x " 256 "rctl 0x%x thru non-offload path\n", 257 fh->fh_type, fh->fh_r_ctl); 258 return -ENODEV; 259 } 260 if (rc) 261 return -ENOMEM; 262 else 263 return 0; 264 } 265 266 /** 267 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function 268 * 269 * @lport: the associated local port 270 * @fp: the fc_frame to be transmitted 271 */ 272 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp) 273 { 274 struct ethhdr *eh; 275 struct fcoe_crc_eof *cp; 276 struct sk_buff *skb; 277 struct fc_frame_header *fh; 278 struct bnx2fc_interface *interface; 279 struct fcoe_ctlr *ctlr; 280 struct bnx2fc_hba *hba; 281 struct fcoe_port *port; 282 struct fcoe_hdr *hp; 283 struct bnx2fc_rport *tgt; 284 struct fc_stats *stats; 285 u8 sof, eof; 286 u32 crc; 287 unsigned int hlen, tlen, elen; 288 int wlen, rc = 0; 289 290 port = (struct fcoe_port *)lport_priv(lport); 291 interface = port->priv; 292 ctlr = bnx2fc_to_ctlr(interface); 293 hba = interface->hba; 294 295 fh = fc_frame_header_get(fp); 296 297 skb = fp_skb(fp); 298 if (!lport->link_up) { 299 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n"); 300 kfree_skb(skb); 301 return 0; 302 } 303 304 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 305 if (!ctlr->sel_fcf) { 306 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n"); 307 kfree_skb(skb); 308 return -EINVAL; 309 } 310 if (fcoe_ctlr_els_send(ctlr, lport, skb)) 311 return 0; 312 } 313 314 sof = fr_sof(fp); 315 eof = fr_eof(fp); 316 317 /* 318 * Snoop the frame header to check if the frame is for 319 * an offloaded session 320 */ 321 /* 322 * tgt_ofld_list access is synchronized using 323 * both hba mutex and hba lock. Atleast hba mutex or 324 * hba lock needs to be held for read access. 325 */ 326 327 spin_lock_bh(&hba->hba_lock); 328 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id)); 329 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) { 330 /* This frame is for offloaded session */ 331 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session " 332 "port_id = 0x%x\n", ntoh24(fh->fh_d_id)); 333 spin_unlock_bh(&hba->hba_lock); 334 rc = bnx2fc_xmit_l2_frame(tgt, fp); 335 if (rc != -ENODEV) { 336 kfree_skb(skb); 337 return rc; 338 } 339 } else { 340 spin_unlock_bh(&hba->hba_lock); 341 } 342 343 elen = sizeof(struct ethhdr); 344 hlen = sizeof(struct fcoe_hdr); 345 tlen = sizeof(struct fcoe_crc_eof); 346 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 347 348 skb->ip_summed = CHECKSUM_NONE; 349 crc = fcoe_fc_crc(fp); 350 351 /* copy port crc and eof to the skb buff */ 352 if (skb_is_nonlinear(skb)) { 353 skb_frag_t *frag; 354 if (bnx2fc_get_paged_crc_eof(skb, tlen)) { 355 kfree_skb(skb); 356 return -ENOMEM; 357 } 358 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 359 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; 360 } else { 361 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); 362 } 363 364 memset(cp, 0, sizeof(*cp)); 365 cp->fcoe_eof = eof; 366 cp->fcoe_crc32 = cpu_to_le32(~crc); 367 if (skb_is_nonlinear(skb)) { 368 kunmap_atomic(cp); 369 cp = NULL; 370 } 371 372 /* adjust skb network/transport offsets to match mac/fcoe/port */ 373 skb_push(skb, elen + hlen); 374 skb_reset_mac_header(skb); 375 skb_reset_network_header(skb); 376 skb->mac_len = elen; 377 skb->protocol = htons(ETH_P_FCOE); 378 skb->dev = interface->netdev; 379 380 /* fill up mac and fcoe headers */ 381 eh = eth_hdr(skb); 382 eh->h_proto = htons(ETH_P_FCOE); 383 if (ctlr->map_dest) 384 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 385 else 386 /* insert GW address */ 387 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); 388 389 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) 390 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); 391 else 392 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); 393 394 hp = (struct fcoe_hdr *)(eh + 1); 395 memset(hp, 0, sizeof(*hp)); 396 if (FC_FCOE_VER) 397 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 398 hp->fcoe_sof = sof; 399 400 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ 401 if (lport->seq_offload && fr_max_payload(fp)) { 402 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; 403 skb_shinfo(skb)->gso_size = fr_max_payload(fp); 404 } else { 405 skb_shinfo(skb)->gso_type = 0; 406 skb_shinfo(skb)->gso_size = 0; 407 } 408 409 /*update tx stats */ 410 stats = per_cpu_ptr(lport->stats, get_cpu()); 411 stats->TxFrames++; 412 stats->TxWords += wlen; 413 put_cpu(); 414 415 /* send down to lld */ 416 fr_dev(fp) = lport; 417 if (port->fcoe_pending_queue.qlen) 418 fcoe_check_wait_queue(lport, skb); 419 else if (fcoe_start_io(skb)) 420 fcoe_check_wait_queue(lport, skb); 421 422 return 0; 423 } 424 425 /** 426 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ 427 * 428 * @skb: the receive socket buffer 429 * @dev: associated net device 430 * @ptype: context 431 * @olddev: last device 432 * 433 * This function receives the packet and builds FC frame and passes it up 434 */ 435 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev, 436 struct packet_type *ptype, struct net_device *olddev) 437 { 438 struct fc_lport *lport; 439 struct bnx2fc_interface *interface; 440 struct fcoe_ctlr *ctlr; 441 struct fc_frame_header *fh; 442 struct fcoe_rcv_info *fr; 443 struct fcoe_percpu_s *bg; 444 struct sk_buff *tmp_skb; 445 unsigned short oxid; 446 447 interface = container_of(ptype, struct bnx2fc_interface, 448 fcoe_packet_type); 449 ctlr = bnx2fc_to_ctlr(interface); 450 lport = ctlr->lp; 451 452 if (unlikely(lport == NULL)) { 453 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n"); 454 goto err; 455 } 456 457 tmp_skb = skb_share_check(skb, GFP_ATOMIC); 458 if (!tmp_skb) 459 goto err; 460 461 skb = tmp_skb; 462 463 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { 464 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n"); 465 goto err; 466 } 467 468 /* 469 * Check for minimum frame length, and make sure required FCoE 470 * and FC headers are pulled into the linear data area. 471 */ 472 if (unlikely((skb->len < FCOE_MIN_FRAME) || 473 !pskb_may_pull(skb, FCOE_HEADER_LEN))) 474 goto err; 475 476 skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); 477 fh = (struct fc_frame_header *) skb_transport_header(skb); 478 479 oxid = ntohs(fh->fh_ox_id); 480 481 fr = fcoe_dev_from_skb(skb); 482 fr->fr_dev = lport; 483 484 bg = &bnx2fc_global; 485 spin_lock(&bg->fcoe_rx_list.lock); 486 487 __skb_queue_tail(&bg->fcoe_rx_list, skb); 488 if (bg->fcoe_rx_list.qlen == 1) 489 wake_up_process(bg->kthread); 490 491 spin_unlock(&bg->fcoe_rx_list.lock); 492 493 return 0; 494 err: 495 kfree_skb(skb); 496 return -1; 497 } 498 499 static int bnx2fc_l2_rcv_thread(void *arg) 500 { 501 struct fcoe_percpu_s *bg = arg; 502 struct sk_buff *skb; 503 504 set_user_nice(current, MIN_NICE); 505 set_current_state(TASK_INTERRUPTIBLE); 506 while (!kthread_should_stop()) { 507 schedule(); 508 spin_lock_bh(&bg->fcoe_rx_list.lock); 509 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { 510 spin_unlock_bh(&bg->fcoe_rx_list.lock); 511 bnx2fc_recv_frame(skb); 512 spin_lock_bh(&bg->fcoe_rx_list.lock); 513 } 514 __set_current_state(TASK_INTERRUPTIBLE); 515 spin_unlock_bh(&bg->fcoe_rx_list.lock); 516 } 517 __set_current_state(TASK_RUNNING); 518 return 0; 519 } 520 521 522 static void bnx2fc_recv_frame(struct sk_buff *skb) 523 { 524 u32 fr_len; 525 struct fc_lport *lport; 526 struct fcoe_rcv_info *fr; 527 struct fc_stats *stats; 528 struct fc_frame_header *fh; 529 struct fcoe_crc_eof crc_eof; 530 struct fc_frame *fp; 531 struct fc_lport *vn_port; 532 struct fcoe_port *port; 533 u8 *mac = NULL; 534 u8 *dest_mac = NULL; 535 struct fcoe_hdr *hp; 536 537 fr = fcoe_dev_from_skb(skb); 538 lport = fr->fr_dev; 539 if (unlikely(lport == NULL)) { 540 printk(KERN_ERR PFX "Invalid lport struct\n"); 541 kfree_skb(skb); 542 return; 543 } 544 545 if (skb_is_nonlinear(skb)) 546 skb_linearize(skb); 547 mac = eth_hdr(skb)->h_source; 548 dest_mac = eth_hdr(skb)->h_dest; 549 550 /* Pull the header */ 551 hp = (struct fcoe_hdr *) skb_network_header(skb); 552 fh = (struct fc_frame_header *) skb_transport_header(skb); 553 skb_pull(skb, sizeof(struct fcoe_hdr)); 554 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 555 556 fp = (struct fc_frame *)skb; 557 fc_frame_init(fp); 558 fr_dev(fp) = lport; 559 fr_sof(fp) = hp->fcoe_sof; 560 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 561 kfree_skb(skb); 562 return; 563 } 564 fr_eof(fp) = crc_eof.fcoe_eof; 565 fr_crc(fp) = crc_eof.fcoe_crc32; 566 if (pskb_trim(skb, fr_len)) { 567 kfree_skb(skb); 568 return; 569 } 570 571 fh = fc_frame_header_get(fp); 572 573 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 574 if (vn_port) { 575 port = lport_priv(vn_port); 576 if (!ether_addr_equal(port->data_src_addr, dest_mac)) { 577 BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); 578 kfree_skb(skb); 579 return; 580 } 581 } 582 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 583 fh->fh_type == FC_TYPE_FCP) { 584 /* Drop FCP data. We dont this in L2 path */ 585 kfree_skb(skb); 586 return; 587 } 588 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 589 fh->fh_type == FC_TYPE_ELS) { 590 switch (fc_frame_payload_op(fp)) { 591 case ELS_LOGO: 592 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 593 /* drop non-FIP LOGO */ 594 kfree_skb(skb); 595 return; 596 } 597 break; 598 } 599 } 600 601 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 602 /* Drop incoming ABTS */ 603 kfree_skb(skb); 604 return; 605 } 606 607 stats = per_cpu_ptr(lport->stats, smp_processor_id()); 608 stats->RxFrames++; 609 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; 610 611 if (le32_to_cpu(fr_crc(fp)) != 612 ~crc32(~0, skb->data, fr_len)) { 613 if (stats->InvalidCRCCount < 5) 614 printk(KERN_WARNING PFX "dropping frame with " 615 "CRC error\n"); 616 stats->InvalidCRCCount++; 617 kfree_skb(skb); 618 return; 619 } 620 fc_exch_recv(lport, fp); 621 } 622 623 /** 624 * bnx2fc_percpu_io_thread - thread per cpu for ios 625 * 626 * @arg: ptr to bnx2fc_percpu_info structure 627 */ 628 static int bnx2fc_percpu_io_thread(void *arg) 629 { 630 struct bnx2fc_percpu_s *p = arg; 631 struct bnx2fc_work *work, *tmp; 632 LIST_HEAD(work_list); 633 634 set_user_nice(current, MIN_NICE); 635 set_current_state(TASK_INTERRUPTIBLE); 636 while (!kthread_should_stop()) { 637 schedule(); 638 spin_lock_bh(&p->fp_work_lock); 639 while (!list_empty(&p->work_list)) { 640 list_splice_init(&p->work_list, &work_list); 641 spin_unlock_bh(&p->fp_work_lock); 642 643 list_for_each_entry_safe(work, tmp, &work_list, list) { 644 list_del_init(&work->list); 645 bnx2fc_process_cq_compl(work->tgt, work->wqe); 646 kfree(work); 647 } 648 649 spin_lock_bh(&p->fp_work_lock); 650 } 651 __set_current_state(TASK_INTERRUPTIBLE); 652 spin_unlock_bh(&p->fp_work_lock); 653 } 654 __set_current_state(TASK_RUNNING); 655 656 return 0; 657 } 658 659 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) 660 { 661 struct fc_host_statistics *bnx2fc_stats; 662 struct fc_lport *lport = shost_priv(shost); 663 struct fcoe_port *port = lport_priv(lport); 664 struct bnx2fc_interface *interface = port->priv; 665 struct bnx2fc_hba *hba = interface->hba; 666 struct fcoe_statistics_params *fw_stats; 667 int rc = 0; 668 669 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; 670 if (!fw_stats) 671 return NULL; 672 673 bnx2fc_stats = fc_get_host_stats(shost); 674 675 init_completion(&hba->stat_req_done); 676 if (bnx2fc_send_stat_req(hba)) 677 return bnx2fc_stats; 678 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); 679 if (!rc) { 680 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); 681 return bnx2fc_stats; 682 } 683 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); 684 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; 685 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); 686 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; 687 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); 688 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); 689 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); 690 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; 691 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); 692 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); 693 694 bnx2fc_stats->dumped_frames = 0; 695 bnx2fc_stats->lip_count = 0; 696 bnx2fc_stats->nos_count = 0; 697 bnx2fc_stats->loss_of_sync_count = 0; 698 bnx2fc_stats->loss_of_signal_count = 0; 699 bnx2fc_stats->prim_seq_protocol_err_count = 0; 700 701 memcpy(&hba->prev_stats, hba->stats_buffer, 702 sizeof(struct fcoe_statistics_params)); 703 return bnx2fc_stats; 704 } 705 706 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) 707 { 708 struct fcoe_port *port = lport_priv(lport); 709 struct bnx2fc_interface *interface = port->priv; 710 struct bnx2fc_hba *hba = interface->hba; 711 struct Scsi_Host *shost = lport->host; 712 int rc = 0; 713 714 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; 715 shost->max_lun = bnx2fc_max_luns; 716 shost->max_id = BNX2FC_MAX_FCP_TGT; 717 shost->max_channel = 0; 718 if (lport->vport) 719 shost->transportt = bnx2fc_vport_xport_template; 720 else 721 shost->transportt = bnx2fc_transport_template; 722 723 /* Add the new host to SCSI-ml */ 724 rc = scsi_add_host(lport->host, dev); 725 if (rc) { 726 printk(KERN_ERR PFX "Error on scsi_add_host\n"); 727 return rc; 728 } 729 if (!lport->vport) 730 fc_host_max_npiv_vports(lport->host) = USHRT_MAX; 731 snprintf(fc_host_symbolic_name(lport->host), 256, 732 "%s (QLogic %s) v%s over %s", 733 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION, 734 interface->netdev->name); 735 736 return 0; 737 } 738 739 static int bnx2fc_link_ok(struct fc_lport *lport) 740 { 741 struct fcoe_port *port = lport_priv(lport); 742 struct bnx2fc_interface *interface = port->priv; 743 struct bnx2fc_hba *hba = interface->hba; 744 struct net_device *dev = hba->phys_dev; 745 int rc = 0; 746 747 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) 748 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 749 else { 750 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 751 rc = -1; 752 } 753 return rc; 754 } 755 756 /** 757 * bnx2fc_get_link_state - get network link state 758 * 759 * @hba: adapter instance pointer 760 * 761 * updates adapter structure flag based on netdev state 762 */ 763 void bnx2fc_get_link_state(struct bnx2fc_hba *hba) 764 { 765 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) 766 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 767 else 768 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 769 } 770 771 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) 772 { 773 struct bnx2fc_hba *hba; 774 struct bnx2fc_interface *interface; 775 struct fcoe_ctlr *ctlr; 776 struct fcoe_port *port; 777 u64 wwnn, wwpn; 778 779 port = lport_priv(lport); 780 interface = port->priv; 781 ctlr = bnx2fc_to_ctlr(interface); 782 hba = interface->hba; 783 784 /* require support for get_pauseparam ethtool op. */ 785 if (!hba->phys_dev->ethtool_ops || 786 !hba->phys_dev->ethtool_ops->get_pauseparam) 787 return -EOPNOTSUPP; 788 789 if (fc_set_mfs(lport, BNX2FC_MFS)) 790 return -EINVAL; 791 792 skb_queue_head_init(&port->fcoe_pending_queue); 793 port->fcoe_pending_queue_active = 0; 794 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport); 795 796 fcoe_link_speed_update(lport); 797 798 if (!lport->vport) { 799 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) 800 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 801 1, 0); 802 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); 803 fc_set_wwnn(lport, wwnn); 804 805 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) 806 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 807 2, 0); 808 809 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); 810 fc_set_wwpn(lport, wwpn); 811 } 812 813 return 0; 814 } 815 816 static void bnx2fc_destroy_timer(unsigned long data) 817 { 818 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data; 819 820 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " 821 "Destroy compl not received!!\n"); 822 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 823 wake_up_interruptible(&hba->destroy_wait); 824 } 825 826 /** 827 * bnx2fc_indicate_netevent - Generic netdev event handler 828 * 829 * @context: adapter structure pointer 830 * @event: event type 831 * @vlan_id: vlan id - associated vlan id with this event 832 * 833 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and 834 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. 835 */ 836 static void bnx2fc_indicate_netevent(void *context, unsigned long event, 837 u16 vlan_id) 838 { 839 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; 840 struct fcoe_ctlr_device *cdev; 841 struct fc_lport *lport; 842 struct fc_lport *vport; 843 struct bnx2fc_interface *interface, *tmp; 844 struct fcoe_ctlr *ctlr; 845 int wait_for_upload = 0; 846 u32 link_possible = 1; 847 848 if (vlan_id != 0 && event != NETDEV_UNREGISTER) 849 return; 850 851 switch (event) { 852 case NETDEV_UP: 853 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 854 printk(KERN_ERR "indicate_netevent: "\ 855 "hba is not UP!!\n"); 856 break; 857 858 case NETDEV_DOWN: 859 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 860 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 861 link_possible = 0; 862 break; 863 864 case NETDEV_GOING_DOWN: 865 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 866 link_possible = 0; 867 break; 868 869 case NETDEV_CHANGE: 870 break; 871 872 case NETDEV_UNREGISTER: 873 if (!vlan_id) 874 return; 875 mutex_lock(&bnx2fc_dev_lock); 876 list_for_each_entry_safe(interface, tmp, &if_list, list) { 877 if (interface->hba == hba && 878 interface->vlan_id == (vlan_id & VLAN_VID_MASK)) 879 __bnx2fc_destroy(interface); 880 } 881 mutex_unlock(&bnx2fc_dev_lock); 882 883 /* Ensure ALL destroy work has been completed before return */ 884 flush_workqueue(bnx2fc_wq); 885 return; 886 887 default: 888 return; 889 } 890 891 mutex_lock(&bnx2fc_dev_lock); 892 list_for_each_entry(interface, &if_list, list) { 893 894 if (interface->hba != hba) 895 continue; 896 897 ctlr = bnx2fc_to_ctlr(interface); 898 lport = ctlr->lp; 899 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", 900 interface->netdev->name, event); 901 902 fcoe_link_speed_update(lport); 903 904 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 905 906 if (link_possible && !bnx2fc_link_ok(lport)) { 907 switch (cdev->enabled) { 908 case FCOE_CTLR_DISABLED: 909 pr_info("Link up while interface is disabled.\n"); 910 break; 911 case FCOE_CTLR_ENABLED: 912 case FCOE_CTLR_UNUSED: 913 /* Reset max recv frame size to default */ 914 fc_set_mfs(lport, BNX2FC_MFS); 915 /* 916 * ctlr link up will only be handled during 917 * enable to avoid sending discovery 918 * solicitation on a stale vlan 919 */ 920 if (interface->enabled) 921 fcoe_ctlr_link_up(ctlr); 922 }; 923 } else if (fcoe_ctlr_link_down(ctlr)) { 924 switch (cdev->enabled) { 925 case FCOE_CTLR_DISABLED: 926 pr_info("Link down while interface is disabled.\n"); 927 break; 928 case FCOE_CTLR_ENABLED: 929 case FCOE_CTLR_UNUSED: 930 mutex_lock(&lport->lp_mutex); 931 list_for_each_entry(vport, &lport->vports, list) 932 fc_host_port_type(vport->host) = 933 FC_PORTTYPE_UNKNOWN; 934 mutex_unlock(&lport->lp_mutex); 935 fc_host_port_type(lport->host) = 936 FC_PORTTYPE_UNKNOWN; 937 per_cpu_ptr(lport->stats, 938 get_cpu())->LinkFailureCount++; 939 put_cpu(); 940 fcoe_clean_pending_queue(lport); 941 wait_for_upload = 1; 942 }; 943 } 944 } 945 mutex_unlock(&bnx2fc_dev_lock); 946 947 if (wait_for_upload) { 948 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 949 init_waitqueue_head(&hba->shutdown_wait); 950 BNX2FC_MISC_DBG("indicate_netevent " 951 "num_ofld_sess = %d\n", 952 hba->num_ofld_sess); 953 hba->wait_for_link_down = 1; 954 wait_event_interruptible(hba->shutdown_wait, 955 (hba->num_ofld_sess == 0)); 956 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", 957 hba->num_ofld_sess); 958 hba->wait_for_link_down = 0; 959 960 if (signal_pending(current)) 961 flush_signals(current); 962 } 963 } 964 965 static int bnx2fc_libfc_config(struct fc_lport *lport) 966 { 967 968 /* Set the function pointers set by bnx2fc driver */ 969 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, 970 sizeof(struct libfc_function_template)); 971 fc_elsct_init(lport); 972 fc_exch_init(lport); 973 fc_rport_init(lport); 974 fc_disc_init(lport); 975 fc_disc_config(lport, lport); 976 return 0; 977 } 978 979 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba) 980 { 981 int fcoe_min_xid, fcoe_max_xid; 982 983 fcoe_min_xid = hba->max_xid + 1; 984 if (nr_cpu_ids <= 2) 985 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET; 986 else 987 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET; 988 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid, 989 fcoe_max_xid, NULL)) { 990 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); 991 return -ENOMEM; 992 } 993 994 return 0; 995 } 996 997 static int bnx2fc_lport_config(struct fc_lport *lport) 998 { 999 lport->link_up = 0; 1000 lport->qfull = 0; 1001 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; 1002 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; 1003 lport->e_d_tov = 2 * 1000; 1004 lport->r_a_tov = 10 * 1000; 1005 1006 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1007 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1008 lport->does_npiv = 1; 1009 1010 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); 1011 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; 1012 1013 /* alloc stats structure */ 1014 if (fc_lport_init_stats(lport)) 1015 return -ENOMEM; 1016 1017 /* Finish fc_lport configuration */ 1018 fc_lport_config(lport); 1019 1020 return 0; 1021 } 1022 1023 /** 1024 * bnx2fc_fip_recv - handle a received FIP frame. 1025 * 1026 * @skb: the received skb 1027 * @dev: associated &net_device 1028 * @ptype: the &packet_type structure which was used to register this handler. 1029 * @orig_dev: original receive &net_device, in case @ dev is a bond. 1030 * 1031 * Returns: 0 for success 1032 */ 1033 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, 1034 struct packet_type *ptype, 1035 struct net_device *orig_dev) 1036 { 1037 struct bnx2fc_interface *interface; 1038 struct fcoe_ctlr *ctlr; 1039 interface = container_of(ptype, struct bnx2fc_interface, 1040 fip_packet_type); 1041 ctlr = bnx2fc_to_ctlr(interface); 1042 fcoe_ctlr_recv(ctlr, skb); 1043 return 0; 1044 } 1045 1046 /** 1047 * bnx2fc_update_src_mac - Update Ethernet MAC filters. 1048 * 1049 * @fip: FCoE controller. 1050 * @old: Unicast MAC address to delete if the MAC is non-zero. 1051 * @new: Unicast MAC address to add. 1052 * 1053 * Remove any previously-set unicast MAC filter. 1054 * Add secondary FCoE MAC address filter for our OUI. 1055 */ 1056 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) 1057 { 1058 struct fcoe_port *port = lport_priv(lport); 1059 1060 memcpy(port->data_src_addr, addr, ETH_ALEN); 1061 } 1062 1063 /** 1064 * bnx2fc_get_src_mac - return the ethernet source address for an lport 1065 * 1066 * @lport: libfc port 1067 */ 1068 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) 1069 { 1070 struct fcoe_port *port; 1071 1072 port = (struct fcoe_port *)lport_priv(lport); 1073 return port->data_src_addr; 1074 } 1075 1076 /** 1077 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. 1078 * 1079 * @fip: FCoE controller. 1080 * @skb: FIP Packet. 1081 */ 1082 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 1083 { 1084 struct fip_header *fiph; 1085 struct ethhdr *eth_hdr; 1086 u16 op; 1087 u8 sub; 1088 1089 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); 1090 eth_hdr = (struct ethhdr *)skb_mac_header(skb); 1091 op = ntohs(fiph->fip_op); 1092 sub = fiph->fip_subcode; 1093 1094 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka) 1095 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n", 1096 eth_hdr->h_source, eth_hdr->h_dest); 1097 1098 skb->dev = bnx2fc_from_ctlr(fip)->netdev; 1099 dev_queue_xmit(skb); 1100 } 1101 1102 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) 1103 { 1104 struct Scsi_Host *shost = vport_to_shost(vport); 1105 struct fc_lport *n_port = shost_priv(shost); 1106 struct fcoe_port *port = lport_priv(n_port); 1107 struct bnx2fc_interface *interface = port->priv; 1108 struct net_device *netdev = interface->netdev; 1109 struct fc_lport *vn_port; 1110 int rc; 1111 char buf[32]; 1112 1113 rc = fcoe_validate_vport_create(vport); 1114 if (rc) { 1115 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1116 printk(KERN_ERR PFX "Failed to create vport, " 1117 "WWPN (0x%s) already exists\n", 1118 buf); 1119 return rc; 1120 } 1121 1122 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1123 printk(KERN_ERR PFX "vn ports cannot be created on" 1124 "this interface\n"); 1125 return -EIO; 1126 } 1127 rtnl_lock(); 1128 mutex_lock(&bnx2fc_dev_lock); 1129 vn_port = bnx2fc_if_create(interface, &vport->dev, 1); 1130 mutex_unlock(&bnx2fc_dev_lock); 1131 rtnl_unlock(); 1132 1133 if (!vn_port) { 1134 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", 1135 netdev->name); 1136 return -EIO; 1137 } 1138 1139 if (bnx2fc_devloss_tmo) 1140 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo; 1141 1142 if (disabled) { 1143 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1144 } else { 1145 vn_port->boot_time = jiffies; 1146 fc_lport_init(vn_port); 1147 fc_fabric_login(vn_port); 1148 fc_vport_setlink(vn_port); 1149 } 1150 return 0; 1151 } 1152 1153 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) 1154 { 1155 struct bnx2fc_lport *blport, *tmp; 1156 1157 spin_lock_bh(&hba->hba_lock); 1158 list_for_each_entry_safe(blport, tmp, &hba->vports, list) { 1159 if (blport->lport == lport) { 1160 list_del(&blport->list); 1161 kfree(blport); 1162 } 1163 } 1164 spin_unlock_bh(&hba->hba_lock); 1165 } 1166 1167 static int bnx2fc_vport_destroy(struct fc_vport *vport) 1168 { 1169 struct Scsi_Host *shost = vport_to_shost(vport); 1170 struct fc_lport *n_port = shost_priv(shost); 1171 struct fc_lport *vn_port = vport->dd_data; 1172 struct fcoe_port *port = lport_priv(vn_port); 1173 struct bnx2fc_interface *interface = port->priv; 1174 struct fc_lport *v_port; 1175 bool found = false; 1176 1177 mutex_lock(&n_port->lp_mutex); 1178 list_for_each_entry(v_port, &n_port->vports, list) 1179 if (v_port->vport == vport) { 1180 found = true; 1181 break; 1182 } 1183 1184 if (!found) { 1185 mutex_unlock(&n_port->lp_mutex); 1186 return -ENOENT; 1187 } 1188 list_del(&vn_port->list); 1189 mutex_unlock(&n_port->lp_mutex); 1190 bnx2fc_free_vport(interface->hba, port->lport); 1191 bnx2fc_port_shutdown(port->lport); 1192 bnx2fc_interface_put(interface); 1193 queue_work(bnx2fc_wq, &port->destroy_work); 1194 return 0; 1195 } 1196 1197 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) 1198 { 1199 struct fc_lport *lport = vport->dd_data; 1200 1201 if (disable) { 1202 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1203 fc_fabric_logoff(lport); 1204 } else { 1205 lport->boot_time = jiffies; 1206 fc_fabric_login(lport); 1207 fc_vport_setlink(lport); 1208 } 1209 return 0; 1210 } 1211 1212 1213 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) 1214 { 1215 struct net_device *netdev = interface->netdev; 1216 struct net_device *physdev = interface->hba->phys_dev; 1217 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1218 struct netdev_hw_addr *ha; 1219 int sel_san_mac = 0; 1220 1221 /* setup Source MAC Address */ 1222 rcu_read_lock(); 1223 for_each_dev_addr(physdev, ha) { 1224 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", 1225 ha->type); 1226 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], 1227 ha->addr[1], ha->addr[2], ha->addr[3], 1228 ha->addr[4], ha->addr[5]); 1229 1230 if ((ha->type == NETDEV_HW_ADDR_T_SAN) && 1231 (is_valid_ether_addr(ha->addr))) { 1232 memcpy(ctlr->ctl_src_addr, ha->addr, 1233 ETH_ALEN); 1234 sel_san_mac = 1; 1235 BNX2FC_MISC_DBG("Found SAN MAC\n"); 1236 } 1237 } 1238 rcu_read_unlock(); 1239 1240 if (!sel_san_mac) 1241 return -ENODEV; 1242 1243 interface->fip_packet_type.func = bnx2fc_fip_recv; 1244 interface->fip_packet_type.type = htons(ETH_P_FIP); 1245 interface->fip_packet_type.dev = netdev; 1246 dev_add_pack(&interface->fip_packet_type); 1247 1248 interface->fcoe_packet_type.func = bnx2fc_rcv; 1249 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); 1250 interface->fcoe_packet_type.dev = netdev; 1251 dev_add_pack(&interface->fcoe_packet_type); 1252 1253 return 0; 1254 } 1255 1256 static int bnx2fc_attach_transport(void) 1257 { 1258 bnx2fc_transport_template = 1259 fc_attach_transport(&bnx2fc_transport_function); 1260 1261 if (bnx2fc_transport_template == NULL) { 1262 printk(KERN_ERR PFX "Failed to attach FC transport\n"); 1263 return -ENODEV; 1264 } 1265 1266 bnx2fc_vport_xport_template = 1267 fc_attach_transport(&bnx2fc_vport_xport_function); 1268 if (bnx2fc_vport_xport_template == NULL) { 1269 printk(KERN_ERR PFX 1270 "Failed to attach FC transport for vport\n"); 1271 fc_release_transport(bnx2fc_transport_template); 1272 bnx2fc_transport_template = NULL; 1273 return -ENODEV; 1274 } 1275 return 0; 1276 } 1277 static void bnx2fc_release_transport(void) 1278 { 1279 fc_release_transport(bnx2fc_transport_template); 1280 fc_release_transport(bnx2fc_vport_xport_template); 1281 bnx2fc_transport_template = NULL; 1282 bnx2fc_vport_xport_template = NULL; 1283 } 1284 1285 static void bnx2fc_interface_release(struct kref *kref) 1286 { 1287 struct fcoe_ctlr_device *ctlr_dev; 1288 struct bnx2fc_interface *interface; 1289 struct fcoe_ctlr *ctlr; 1290 struct net_device *netdev; 1291 1292 interface = container_of(kref, struct bnx2fc_interface, kref); 1293 BNX2FC_MISC_DBG("Interface is being released\n"); 1294 1295 ctlr = bnx2fc_to_ctlr(interface); 1296 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); 1297 netdev = interface->netdev; 1298 1299 /* tear-down FIP controller */ 1300 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) 1301 fcoe_ctlr_destroy(ctlr); 1302 1303 fcoe_ctlr_device_delete(ctlr_dev); 1304 1305 dev_put(netdev); 1306 module_put(THIS_MODULE); 1307 } 1308 1309 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) 1310 { 1311 kref_get(&interface->kref); 1312 } 1313 1314 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) 1315 { 1316 kref_put(&interface->kref, bnx2fc_interface_release); 1317 } 1318 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) 1319 { 1320 /* Free the command manager */ 1321 if (hba->cmd_mgr) { 1322 bnx2fc_cmd_mgr_free(hba->cmd_mgr); 1323 hba->cmd_mgr = NULL; 1324 } 1325 kfree(hba->tgt_ofld_list); 1326 bnx2fc_unbind_pcidev(hba); 1327 kfree(hba); 1328 } 1329 1330 /** 1331 * bnx2fc_hba_create - create a new bnx2fc hba 1332 * 1333 * @cnic: pointer to cnic device 1334 * 1335 * Creates a new FCoE hba on the given device. 1336 * 1337 */ 1338 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) 1339 { 1340 struct bnx2fc_hba *hba; 1341 struct fcoe_capabilities *fcoe_cap; 1342 int rc; 1343 1344 hba = kzalloc(sizeof(*hba), GFP_KERNEL); 1345 if (!hba) { 1346 printk(KERN_ERR PFX "Unable to allocate hba structure\n"); 1347 return NULL; 1348 } 1349 spin_lock_init(&hba->hba_lock); 1350 mutex_init(&hba->hba_mutex); 1351 1352 hba->cnic = cnic; 1353 1354 hba->max_tasks = cnic->max_fcoe_exchanges; 1355 hba->elstm_xids = (hba->max_tasks / 2); 1356 hba->max_outstanding_cmds = hba->elstm_xids; 1357 hba->max_xid = (hba->max_tasks - 1); 1358 1359 rc = bnx2fc_bind_pcidev(hba); 1360 if (rc) { 1361 printk(KERN_ERR PFX "create_adapter: bind error\n"); 1362 goto bind_err; 1363 } 1364 hba->phys_dev = cnic->netdev; 1365 hba->next_conn_id = 0; 1366 1367 hba->tgt_ofld_list = 1368 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS, 1369 GFP_KERNEL); 1370 if (!hba->tgt_ofld_list) { 1371 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); 1372 goto tgtofld_err; 1373 } 1374 1375 hba->num_ofld_sess = 0; 1376 1377 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba); 1378 if (!hba->cmd_mgr) { 1379 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); 1380 goto cmgr_err; 1381 } 1382 fcoe_cap = &hba->fcoe_cap; 1383 1384 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << 1385 FCOE_IOS_PER_CONNECTION_SHIFT; 1386 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << 1387 FCOE_LOGINS_PER_PORT_SHIFT; 1388 fcoe_cap->capability2 = hba->max_outstanding_cmds << 1389 FCOE_NUMBER_OF_EXCHANGES_SHIFT; 1390 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << 1391 FCOE_NPIV_WWN_PER_PORT_SHIFT; 1392 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << 1393 FCOE_TARGETS_SUPPORTED_SHIFT; 1394 fcoe_cap->capability3 |= hba->max_outstanding_cmds << 1395 FCOE_OUTSTANDING_COMMANDS_SHIFT; 1396 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; 1397 1398 init_waitqueue_head(&hba->shutdown_wait); 1399 init_waitqueue_head(&hba->destroy_wait); 1400 INIT_LIST_HEAD(&hba->vports); 1401 1402 return hba; 1403 1404 cmgr_err: 1405 kfree(hba->tgt_ofld_list); 1406 tgtofld_err: 1407 bnx2fc_unbind_pcidev(hba); 1408 bind_err: 1409 kfree(hba); 1410 return NULL; 1411 } 1412 1413 static struct bnx2fc_interface * 1414 bnx2fc_interface_create(struct bnx2fc_hba *hba, 1415 struct net_device *netdev, 1416 enum fip_state fip_mode) 1417 { 1418 struct fcoe_ctlr_device *ctlr_dev; 1419 struct bnx2fc_interface *interface; 1420 struct fcoe_ctlr *ctlr; 1421 int size; 1422 int rc = 0; 1423 1424 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); 1425 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, 1426 size); 1427 if (!ctlr_dev) { 1428 printk(KERN_ERR PFX "Unable to allocate interface structure\n"); 1429 return NULL; 1430 } 1431 ctlr = fcoe_ctlr_device_priv(ctlr_dev); 1432 ctlr->cdev = ctlr_dev; 1433 interface = fcoe_ctlr_priv(ctlr); 1434 dev_hold(netdev); 1435 kref_init(&interface->kref); 1436 interface->hba = hba; 1437 interface->netdev = netdev; 1438 1439 /* Initialize FIP */ 1440 fcoe_ctlr_init(ctlr, fip_mode); 1441 ctlr->send = bnx2fc_fip_send; 1442 ctlr->update_mac = bnx2fc_update_src_mac; 1443 ctlr->get_src_addr = bnx2fc_get_src_mac; 1444 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); 1445 1446 rc = bnx2fc_interface_setup(interface); 1447 if (!rc) 1448 return interface; 1449 1450 fcoe_ctlr_destroy(ctlr); 1451 dev_put(netdev); 1452 fcoe_ctlr_device_delete(ctlr_dev); 1453 return NULL; 1454 } 1455 1456 /** 1457 * bnx2fc_if_create - Create FCoE instance on a given interface 1458 * 1459 * @interface: FCoE interface to create a local port on 1460 * @parent: Device pointer to be the parent in sysfs for the SCSI host 1461 * @npiv: Indicates if the port is vport or not 1462 * 1463 * Creates a fc_lport instance and a Scsi_Host instance and configure them. 1464 * 1465 * Returns: Allocated fc_lport or an error pointer 1466 */ 1467 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 1468 struct device *parent, int npiv) 1469 { 1470 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1471 struct fc_lport *lport, *n_port; 1472 struct fcoe_port *port; 1473 struct Scsi_Host *shost; 1474 struct fc_vport *vport = dev_to_vport(parent); 1475 struct bnx2fc_lport *blport; 1476 struct bnx2fc_hba *hba = interface->hba; 1477 int rc = 0; 1478 1479 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); 1480 if (!blport) { 1481 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); 1482 return NULL; 1483 } 1484 1485 /* Allocate Scsi_Host structure */ 1486 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds; 1487 if (!npiv) 1488 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); 1489 else 1490 lport = libfc_vport_create(vport, sizeof(*port)); 1491 1492 if (!lport) { 1493 printk(KERN_ERR PFX "could not allocate scsi host structure\n"); 1494 goto free_blport; 1495 } 1496 shost = lport->host; 1497 port = lport_priv(lport); 1498 port->lport = lport; 1499 port->priv = interface; 1500 port->get_netdev = bnx2fc_netdev; 1501 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work); 1502 1503 /* Configure fcoe_port */ 1504 rc = bnx2fc_lport_config(lport); 1505 if (rc) 1506 goto lp_config_err; 1507 1508 if (npiv) { 1509 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", 1510 vport->node_name, vport->port_name); 1511 fc_set_wwnn(lport, vport->node_name); 1512 fc_set_wwpn(lport, vport->port_name); 1513 } 1514 /* Configure netdev and networking properties of the lport */ 1515 rc = bnx2fc_net_config(lport, interface->netdev); 1516 if (rc) { 1517 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); 1518 goto lp_config_err; 1519 } 1520 1521 rc = bnx2fc_shost_config(lport, parent); 1522 if (rc) { 1523 printk(KERN_ERR PFX "Couldnt configure shost for %s\n", 1524 interface->netdev->name); 1525 goto lp_config_err; 1526 } 1527 1528 /* Initialize the libfc library */ 1529 rc = bnx2fc_libfc_config(lport); 1530 if (rc) { 1531 printk(KERN_ERR PFX "Couldnt configure libfc\n"); 1532 goto shost_err; 1533 } 1534 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1535 1536 if (bnx2fc_devloss_tmo) 1537 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo; 1538 1539 /* Allocate exchange manager */ 1540 if (!npiv) 1541 rc = bnx2fc_em_config(lport, hba); 1542 else { 1543 shost = vport_to_shost(vport); 1544 n_port = shost_priv(shost); 1545 rc = fc_exch_mgr_list_clone(n_port, lport); 1546 } 1547 1548 if (rc) { 1549 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); 1550 goto shost_err; 1551 } 1552 1553 bnx2fc_interface_get(interface); 1554 1555 spin_lock_bh(&hba->hba_lock); 1556 blport->lport = lport; 1557 list_add_tail(&blport->list, &hba->vports); 1558 spin_unlock_bh(&hba->hba_lock); 1559 1560 return lport; 1561 1562 shost_err: 1563 scsi_remove_host(shost); 1564 lp_config_err: 1565 scsi_host_put(lport->host); 1566 free_blport: 1567 kfree(blport); 1568 return NULL; 1569 } 1570 1571 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) 1572 { 1573 /* Dont listen for Ethernet packets anymore */ 1574 __dev_remove_pack(&interface->fcoe_packet_type); 1575 __dev_remove_pack(&interface->fip_packet_type); 1576 synchronize_net(); 1577 } 1578 1579 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) 1580 { 1581 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1582 struct fc_lport *lport = ctlr->lp; 1583 struct fcoe_port *port = lport_priv(lport); 1584 struct bnx2fc_hba *hba = interface->hba; 1585 1586 /* Stop the transmit retry timer */ 1587 del_timer_sync(&port->timer); 1588 1589 /* Free existing transmit skbs */ 1590 fcoe_clean_pending_queue(lport); 1591 1592 bnx2fc_net_cleanup(interface); 1593 1594 bnx2fc_free_vport(hba, lport); 1595 } 1596 1597 static void bnx2fc_if_destroy(struct fc_lport *lport) 1598 { 1599 1600 /* Free queued packets for the receive thread */ 1601 bnx2fc_clean_rx_queue(lport); 1602 1603 /* Detach from scsi-ml */ 1604 fc_remove_host(lport->host); 1605 scsi_remove_host(lport->host); 1606 1607 /* 1608 * Note that only the physical lport will have the exchange manager. 1609 * for vports, this function is NOP 1610 */ 1611 fc_exch_mgr_free(lport); 1612 1613 /* Free memory used by statistical counters */ 1614 fc_lport_free_stats(lport); 1615 1616 /* Release Scsi_Host */ 1617 scsi_host_put(lport->host); 1618 } 1619 1620 static void __bnx2fc_destroy(struct bnx2fc_interface *interface) 1621 { 1622 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1623 struct fc_lport *lport = ctlr->lp; 1624 struct fcoe_port *port = lport_priv(lport); 1625 1626 bnx2fc_interface_cleanup(interface); 1627 bnx2fc_stop(interface); 1628 list_del(&interface->list); 1629 bnx2fc_interface_put(interface); 1630 queue_work(bnx2fc_wq, &port->destroy_work); 1631 } 1632 1633 /** 1634 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface 1635 * 1636 * @buffer: The name of the Ethernet interface to be destroyed 1637 * @kp: The associated kernel parameter 1638 * 1639 * Called from sysfs. 1640 * 1641 * Returns: 0 for success 1642 */ 1643 static int bnx2fc_destroy(struct net_device *netdev) 1644 { 1645 struct bnx2fc_interface *interface = NULL; 1646 struct workqueue_struct *timer_work_queue; 1647 struct fcoe_ctlr *ctlr; 1648 int rc = 0; 1649 1650 rtnl_lock(); 1651 mutex_lock(&bnx2fc_dev_lock); 1652 1653 interface = bnx2fc_interface_lookup(netdev); 1654 ctlr = bnx2fc_to_ctlr(interface); 1655 if (!interface || !ctlr->lp) { 1656 rc = -ENODEV; 1657 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); 1658 goto netdev_err; 1659 } 1660 1661 timer_work_queue = interface->timer_work_queue; 1662 __bnx2fc_destroy(interface); 1663 destroy_workqueue(timer_work_queue); 1664 1665 netdev_err: 1666 mutex_unlock(&bnx2fc_dev_lock); 1667 rtnl_unlock(); 1668 return rc; 1669 } 1670 1671 static void bnx2fc_destroy_work(struct work_struct *work) 1672 { 1673 struct fcoe_port *port; 1674 struct fc_lport *lport; 1675 1676 port = container_of(work, struct fcoe_port, destroy_work); 1677 lport = port->lport; 1678 1679 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n"); 1680 1681 bnx2fc_if_destroy(lport); 1682 } 1683 1684 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) 1685 { 1686 bnx2fc_free_fw_resc(hba); 1687 bnx2fc_free_task_ctx(hba); 1688 } 1689 1690 /** 1691 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated 1692 * pci structure 1693 * 1694 * @hba: Adapter instance 1695 */ 1696 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) 1697 { 1698 if (bnx2fc_setup_task_ctx(hba)) 1699 goto mem_err; 1700 1701 if (bnx2fc_setup_fw_resc(hba)) 1702 goto mem_err; 1703 1704 return 0; 1705 mem_err: 1706 bnx2fc_unbind_adapter_devices(hba); 1707 return -ENOMEM; 1708 } 1709 1710 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) 1711 { 1712 struct cnic_dev *cnic; 1713 struct pci_dev *pdev; 1714 1715 if (!hba->cnic) { 1716 printk(KERN_ERR PFX "cnic is NULL\n"); 1717 return -ENODEV; 1718 } 1719 cnic = hba->cnic; 1720 pdev = hba->pcidev = cnic->pcidev; 1721 if (!hba->pcidev) 1722 return -ENODEV; 1723 1724 switch (pdev->device) { 1725 case PCI_DEVICE_ID_NX2_57710: 1726 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN); 1727 break; 1728 case PCI_DEVICE_ID_NX2_57711: 1729 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN); 1730 break; 1731 case PCI_DEVICE_ID_NX2_57712: 1732 case PCI_DEVICE_ID_NX2_57712_MF: 1733 case PCI_DEVICE_ID_NX2_57712_VF: 1734 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN); 1735 break; 1736 case PCI_DEVICE_ID_NX2_57800: 1737 case PCI_DEVICE_ID_NX2_57800_MF: 1738 case PCI_DEVICE_ID_NX2_57800_VF: 1739 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN); 1740 break; 1741 case PCI_DEVICE_ID_NX2_57810: 1742 case PCI_DEVICE_ID_NX2_57810_MF: 1743 case PCI_DEVICE_ID_NX2_57810_VF: 1744 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN); 1745 break; 1746 case PCI_DEVICE_ID_NX2_57840: 1747 case PCI_DEVICE_ID_NX2_57840_MF: 1748 case PCI_DEVICE_ID_NX2_57840_VF: 1749 case PCI_DEVICE_ID_NX2_57840_2_20: 1750 case PCI_DEVICE_ID_NX2_57840_4_10: 1751 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN); 1752 break; 1753 default: 1754 pr_err(PFX "Unknown device id 0x%x\n", pdev->device); 1755 break; 1756 } 1757 pci_dev_get(hba->pcidev); 1758 return 0; 1759 } 1760 1761 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) 1762 { 1763 if (hba->pcidev) { 1764 hba->chip_num[0] = '\0'; 1765 pci_dev_put(hba->pcidev); 1766 } 1767 hba->pcidev = NULL; 1768 } 1769 1770 /** 1771 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats 1772 * 1773 * @handle: transport handle pointing to adapter struture 1774 */ 1775 static int bnx2fc_ulp_get_stats(void *handle) 1776 { 1777 struct bnx2fc_hba *hba = handle; 1778 struct cnic_dev *cnic; 1779 struct fcoe_stats_info *stats_addr; 1780 1781 if (!hba) 1782 return -EINVAL; 1783 1784 cnic = hba->cnic; 1785 stats_addr = &cnic->stats_addr->fcoe_stat; 1786 if (!stats_addr) 1787 return -EINVAL; 1788 1789 strncpy(stats_addr->version, BNX2FC_VERSION, 1790 sizeof(stats_addr->version)); 1791 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX; 1792 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX; 1793 1794 return 0; 1795 } 1796 1797 1798 /** 1799 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance 1800 * 1801 * @handle: transport handle pointing to adapter structure 1802 * 1803 * This function maps adapter structure to pcidev structure and initiates 1804 * firmware handshake to enable/initialize on-chip FCoE components. 1805 * This bnx2fc - cnic interface api callback is used after following 1806 * conditions are met - 1807 * a) underlying network interface is up (marked by event NETDEV_UP 1808 * from netdev 1809 * b) bnx2fc adatper structure is registered. 1810 */ 1811 static void bnx2fc_ulp_start(void *handle) 1812 { 1813 struct bnx2fc_hba *hba = handle; 1814 struct bnx2fc_interface *interface; 1815 struct fcoe_ctlr *ctlr; 1816 struct fc_lport *lport; 1817 1818 mutex_lock(&bnx2fc_dev_lock); 1819 1820 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1821 bnx2fc_fw_init(hba); 1822 1823 BNX2FC_MISC_DBG("bnx2fc started.\n"); 1824 1825 list_for_each_entry(interface, &if_list, list) { 1826 if (interface->hba == hba) { 1827 ctlr = bnx2fc_to_ctlr(interface); 1828 lport = ctlr->lp; 1829 /* Kick off Fabric discovery*/ 1830 printk(KERN_ERR PFX "ulp_init: start discovery\n"); 1831 lport->tt.frame_send = bnx2fc_xmit; 1832 bnx2fc_start_disc(interface); 1833 } 1834 } 1835 1836 mutex_unlock(&bnx2fc_dev_lock); 1837 } 1838 1839 static void bnx2fc_port_shutdown(struct fc_lport *lport) 1840 { 1841 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1842 fc_fabric_logoff(lport); 1843 fc_lport_destroy(lport); 1844 } 1845 1846 static void bnx2fc_stop(struct bnx2fc_interface *interface) 1847 { 1848 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1849 struct fc_lport *lport; 1850 struct fc_lport *vport; 1851 1852 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) 1853 return; 1854 1855 lport = ctlr->lp; 1856 bnx2fc_port_shutdown(lport); 1857 1858 mutex_lock(&lport->lp_mutex); 1859 list_for_each_entry(vport, &lport->vports, list) 1860 fc_host_port_type(vport->host) = 1861 FC_PORTTYPE_UNKNOWN; 1862 mutex_unlock(&lport->lp_mutex); 1863 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1864 fcoe_ctlr_link_down(ctlr); 1865 fcoe_clean_pending_queue(lport); 1866 } 1867 1868 static int bnx2fc_fw_init(struct bnx2fc_hba *hba) 1869 { 1870 #define BNX2FC_INIT_POLL_TIME (1000 / HZ) 1871 int rc = -1; 1872 int i = HZ; 1873 1874 rc = bnx2fc_bind_adapter_devices(hba); 1875 if (rc) { 1876 printk(KERN_ALERT PFX 1877 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); 1878 goto err_out; 1879 } 1880 1881 rc = bnx2fc_send_fw_fcoe_init_msg(hba); 1882 if (rc) { 1883 printk(KERN_ALERT PFX 1884 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); 1885 goto err_unbind; 1886 } 1887 1888 /* 1889 * Wait until the adapter init message is complete, and adapter 1890 * state is UP. 1891 */ 1892 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) 1893 msleep(BNX2FC_INIT_POLL_TIME); 1894 1895 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { 1896 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " 1897 "Ignoring...\n", 1898 hba->cnic->netdev->name); 1899 rc = -1; 1900 goto err_unbind; 1901 } 1902 1903 1904 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); 1905 return 0; 1906 1907 err_unbind: 1908 bnx2fc_unbind_adapter_devices(hba); 1909 err_out: 1910 return rc; 1911 } 1912 1913 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) 1914 { 1915 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { 1916 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { 1917 init_timer(&hba->destroy_timer); 1918 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + 1919 jiffies; 1920 hba->destroy_timer.function = bnx2fc_destroy_timer; 1921 hba->destroy_timer.data = (unsigned long)hba; 1922 add_timer(&hba->destroy_timer); 1923 wait_event_interruptible(hba->destroy_wait, 1924 test_bit(BNX2FC_FLAG_DESTROY_CMPL, 1925 &hba->flags)); 1926 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 1927 /* This should never happen */ 1928 if (signal_pending(current)) 1929 flush_signals(current); 1930 1931 del_timer_sync(&hba->destroy_timer); 1932 } 1933 bnx2fc_unbind_adapter_devices(hba); 1934 } 1935 } 1936 1937 /** 1938 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance 1939 * 1940 * @handle: transport handle pointing to adapter structure 1941 * 1942 * Driver checks if adapter is already in shutdown mode, if not start 1943 * the shutdown process. 1944 */ 1945 static void bnx2fc_ulp_stop(void *handle) 1946 { 1947 struct bnx2fc_hba *hba = handle; 1948 struct bnx2fc_interface *interface; 1949 1950 printk(KERN_ERR "ULP_STOP\n"); 1951 1952 mutex_lock(&bnx2fc_dev_lock); 1953 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1954 goto exit; 1955 list_for_each_entry(interface, &if_list, list) { 1956 if (interface->hba == hba) 1957 bnx2fc_stop(interface); 1958 } 1959 BUG_ON(hba->num_ofld_sess != 0); 1960 1961 mutex_lock(&hba->hba_mutex); 1962 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 1963 clear_bit(ADAPTER_STATE_GOING_DOWN, 1964 &hba->adapter_state); 1965 1966 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 1967 mutex_unlock(&hba->hba_mutex); 1968 1969 bnx2fc_fw_destroy(hba); 1970 exit: 1971 mutex_unlock(&bnx2fc_dev_lock); 1972 } 1973 1974 static void bnx2fc_start_disc(struct bnx2fc_interface *interface) 1975 { 1976 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1977 struct fc_lport *lport; 1978 int wait_cnt = 0; 1979 1980 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1981 /* Kick off FIP/FLOGI */ 1982 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1983 printk(KERN_ERR PFX "Init not done yet\n"); 1984 return; 1985 } 1986 1987 lport = ctlr->lp; 1988 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); 1989 1990 if (!bnx2fc_link_ok(lport) && interface->enabled) { 1991 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); 1992 fcoe_ctlr_link_up(ctlr); 1993 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 1994 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 1995 } 1996 1997 /* wait for the FCF to be selected before issuing FLOGI */ 1998 while (!ctlr->sel_fcf) { 1999 msleep(250); 2000 /* give up after 3 secs */ 2001 if (++wait_cnt > 12) 2002 break; 2003 } 2004 2005 /* Reset max receive frame size to default */ 2006 if (fc_set_mfs(lport, BNX2FC_MFS)) 2007 return; 2008 2009 fc_lport_init(lport); 2010 fc_fabric_login(lport); 2011 } 2012 2013 2014 /** 2015 * bnx2fc_ulp_init - Initialize an adapter instance 2016 * 2017 * @dev : cnic device handle 2018 * Called from cnic_register_driver() context to initialize all 2019 * enumerated cnic devices. This routine allocates adapter structure 2020 * and other device specific resources. 2021 */ 2022 static void bnx2fc_ulp_init(struct cnic_dev *dev) 2023 { 2024 struct bnx2fc_hba *hba; 2025 int rc = 0; 2026 2027 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2028 /* bnx2fc works only when bnx2x is loaded */ 2029 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || 2030 (dev->max_fcoe_conn == 0)) { 2031 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," 2032 " flags: %lx fcoe_conn: %d\n", 2033 dev->netdev->name, dev->flags, dev->max_fcoe_conn); 2034 return; 2035 } 2036 2037 hba = bnx2fc_hba_create(dev); 2038 if (!hba) { 2039 printk(KERN_ERR PFX "hba initialization failed\n"); 2040 return; 2041 } 2042 2043 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name); 2044 2045 /* Add HBA to the adapter list */ 2046 mutex_lock(&bnx2fc_dev_lock); 2047 list_add_tail(&hba->list, &adapter_list); 2048 adapter_count++; 2049 mutex_unlock(&bnx2fc_dev_lock); 2050 2051 dev->fcoe_cap = &hba->fcoe_cap; 2052 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2053 rc = dev->register_device(dev, CNIC_ULP_FCOE, 2054 (void *) hba); 2055 if (rc) 2056 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); 2057 else 2058 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2059 } 2060 2061 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */ 2062 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr) 2063 { 2064 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2065 2066 if (interface->enabled == true) { 2067 if (!ctlr->lp) { 2068 pr_err(PFX "__bnx2fc_disable: lport not found\n"); 2069 return -ENODEV; 2070 } else { 2071 interface->enabled = false; 2072 fcoe_ctlr_link_down(ctlr); 2073 fcoe_clean_pending_queue(ctlr->lp); 2074 } 2075 } 2076 return 0; 2077 } 2078 2079 /** 2080 * Deperecated: Use bnx2fc_enabled() 2081 */ 2082 static int bnx2fc_disable(struct net_device *netdev) 2083 { 2084 struct bnx2fc_interface *interface; 2085 struct fcoe_ctlr *ctlr; 2086 int rc = 0; 2087 2088 rtnl_lock(); 2089 mutex_lock(&bnx2fc_dev_lock); 2090 2091 interface = bnx2fc_interface_lookup(netdev); 2092 ctlr = bnx2fc_to_ctlr(interface); 2093 2094 if (!interface) { 2095 rc = -ENODEV; 2096 pr_err(PFX "bnx2fc_disable: interface not found\n"); 2097 } else { 2098 rc = __bnx2fc_disable(ctlr); 2099 } 2100 mutex_unlock(&bnx2fc_dev_lock); 2101 rtnl_unlock(); 2102 return rc; 2103 } 2104 2105 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport, 2106 struct cnic_fc_npiv_tbl *npiv_tbl) 2107 { 2108 struct fc_vport_identifiers vpid; 2109 uint i, created = 0; 2110 2111 if (npiv_tbl->count > MAX_NPIV_ENTRIES) { 2112 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n"); 2113 goto done; 2114 } 2115 2116 /* Sanity check the first entry to make sure it's not 0 */ 2117 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 && 2118 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) { 2119 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n"); 2120 goto done; 2121 } 2122 2123 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR; 2124 vpid.vport_type = FC_PORTTYPE_NPIV; 2125 vpid.disable = false; 2126 2127 for (i = 0; i < npiv_tbl->count; i++) { 2128 vpid.node_name = wwn_to_u64(npiv_tbl->wwnn[i]); 2129 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]); 2130 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name), 2131 "NPIV[%u]:%016llx-%016llx", 2132 created, vpid.port_name, vpid.node_name); 2133 if (fc_vport_create(lport->host, 0, &vpid)) 2134 created++; 2135 else 2136 BNX2FC_HBA_DBG(lport, "Failed to create vport\n"); 2137 } 2138 done: 2139 return created; 2140 } 2141 2142 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr) 2143 { 2144 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2145 struct bnx2fc_hba *hba; 2146 struct cnic_fc_npiv_tbl *npiv_tbl; 2147 struct fc_lport *lport; 2148 2149 if (interface->enabled == false) { 2150 if (!ctlr->lp) { 2151 pr_err(PFX "__bnx2fc_enable: lport not found\n"); 2152 return -ENODEV; 2153 } else if (!bnx2fc_link_ok(ctlr->lp)) { 2154 fcoe_ctlr_link_up(ctlr); 2155 interface->enabled = true; 2156 } 2157 } 2158 2159 /* Create static NPIV ports if any are contained in NVRAM */ 2160 hba = interface->hba; 2161 lport = ctlr->lp; 2162 2163 if (!hba) 2164 goto done; 2165 2166 if (!hba->cnic) 2167 goto done; 2168 2169 if (!lport) 2170 goto done; 2171 2172 if (!lport->host) 2173 goto done; 2174 2175 if (!hba->cnic->get_fc_npiv_tbl) 2176 goto done; 2177 2178 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL); 2179 if (!npiv_tbl) 2180 goto done; 2181 2182 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl)) 2183 goto done_free; 2184 2185 bnx2fc_npiv_create_vports(lport, npiv_tbl); 2186 done_free: 2187 kfree(npiv_tbl); 2188 done: 2189 return 0; 2190 } 2191 2192 /** 2193 * Deprecated: Use bnx2fc_enabled() 2194 */ 2195 static int bnx2fc_enable(struct net_device *netdev) 2196 { 2197 struct bnx2fc_interface *interface; 2198 struct fcoe_ctlr *ctlr; 2199 int rc = 0; 2200 2201 rtnl_lock(); 2202 mutex_lock(&bnx2fc_dev_lock); 2203 2204 interface = bnx2fc_interface_lookup(netdev); 2205 ctlr = bnx2fc_to_ctlr(interface); 2206 if (!interface) { 2207 rc = -ENODEV; 2208 pr_err(PFX "bnx2fc_enable: interface not found\n"); 2209 } else { 2210 rc = __bnx2fc_enable(ctlr); 2211 } 2212 2213 mutex_unlock(&bnx2fc_dev_lock); 2214 rtnl_unlock(); 2215 return rc; 2216 } 2217 2218 /** 2219 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller 2220 * @cdev: The FCoE Controller that is being enabled or disabled 2221 * 2222 * fcoe_sysfs will ensure that the state of 'enabled' has 2223 * changed, so no checking is necessary here. This routine simply 2224 * calls fcoe_enable or fcoe_disable, both of which are deprecated. 2225 * When those routines are removed the functionality can be merged 2226 * here. 2227 */ 2228 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev) 2229 { 2230 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); 2231 2232 switch (cdev->enabled) { 2233 case FCOE_CTLR_ENABLED: 2234 return __bnx2fc_enable(ctlr); 2235 case FCOE_CTLR_DISABLED: 2236 return __bnx2fc_disable(ctlr); 2237 case FCOE_CTLR_UNUSED: 2238 default: 2239 return -ENOTSUPP; 2240 }; 2241 } 2242 2243 enum bnx2fc_create_link_state { 2244 BNX2FC_CREATE_LINK_DOWN, 2245 BNX2FC_CREATE_LINK_UP, 2246 }; 2247 2248 /** 2249 * _bnx2fc_create() - Create bnx2fc FCoE interface 2250 * @netdev : The net_device object the Ethernet interface to create on 2251 * @fip_mode: The FIP mode for this creation 2252 * @link_state: The ctlr link state on creation 2253 * 2254 * Called from either the libfcoe 'create' module parameter 2255 * via fcoe_create or from fcoe_syfs's ctlr_create file. 2256 * 2257 * libfcoe's 'create' module parameter is deprecated so some 2258 * consolidation of code can be done when that interface is 2259 * removed. 2260 * 2261 * Returns: 0 for success 2262 */ 2263 static int _bnx2fc_create(struct net_device *netdev, 2264 enum fip_mode fip_mode, 2265 enum bnx2fc_create_link_state link_state) 2266 { 2267 struct fcoe_ctlr_device *cdev; 2268 struct fcoe_ctlr *ctlr; 2269 struct bnx2fc_interface *interface; 2270 struct bnx2fc_hba *hba; 2271 struct net_device *phys_dev = netdev; 2272 struct fc_lport *lport; 2273 struct ethtool_drvinfo drvinfo; 2274 int rc = 0; 2275 int vlan_id = 0; 2276 2277 BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); 2278 if (fip_mode != FIP_MODE_FABRIC) { 2279 printk(KERN_ERR "fip mode not FABRIC\n"); 2280 return -EIO; 2281 } 2282 2283 rtnl_lock(); 2284 2285 mutex_lock(&bnx2fc_dev_lock); 2286 2287 if (!try_module_get(THIS_MODULE)) { 2288 rc = -EINVAL; 2289 goto mod_err; 2290 } 2291 2292 /* obtain physical netdev */ 2293 if (netdev->priv_flags & IFF_802_1Q_VLAN) 2294 phys_dev = vlan_dev_real_dev(netdev); 2295 2296 /* verify if the physical device is a netxtreme2 device */ 2297 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { 2298 memset(&drvinfo, 0, sizeof(drvinfo)); 2299 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); 2300 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { 2301 printk(KERN_ERR PFX "Not a netxtreme2 device\n"); 2302 rc = -EINVAL; 2303 goto netdev_err; 2304 } 2305 } else { 2306 printk(KERN_ERR PFX "unable to obtain drv_info\n"); 2307 rc = -EINVAL; 2308 goto netdev_err; 2309 } 2310 2311 /* obtain interface and initialize rest of the structure */ 2312 hba = bnx2fc_hba_lookup(phys_dev); 2313 if (!hba) { 2314 rc = -ENODEV; 2315 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); 2316 goto netdev_err; 2317 } 2318 2319 if (bnx2fc_interface_lookup(netdev)) { 2320 rc = -EEXIST; 2321 goto netdev_err; 2322 } 2323 2324 interface = bnx2fc_interface_create(hba, netdev, fip_mode); 2325 if (!interface) { 2326 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); 2327 rc = -ENOMEM; 2328 goto ifput_err; 2329 } 2330 2331 if (netdev->priv_flags & IFF_802_1Q_VLAN) { 2332 vlan_id = vlan_dev_vlan_id(netdev); 2333 interface->vlan_enabled = 1; 2334 } 2335 2336 ctlr = bnx2fc_to_ctlr(interface); 2337 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 2338 interface->vlan_id = vlan_id; 2339 interface->tm_timeout = BNX2FC_TM_TIMEOUT; 2340 2341 interface->timer_work_queue = 2342 create_singlethread_workqueue("bnx2fc_timer_wq"); 2343 if (!interface->timer_work_queue) { 2344 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); 2345 rc = -EINVAL; 2346 goto ifput_err; 2347 } 2348 2349 lport = bnx2fc_if_create(interface, &cdev->dev, 0); 2350 if (!lport) { 2351 printk(KERN_ERR PFX "Failed to create interface (%s)\n", 2352 netdev->name); 2353 rc = -EINVAL; 2354 goto if_create_err; 2355 } 2356 2357 /* Add interface to if_list */ 2358 list_add_tail(&interface->list, &if_list); 2359 2360 lport->boot_time = jiffies; 2361 2362 /* Make this master N_port */ 2363 ctlr->lp = lport; 2364 2365 if (link_state == BNX2FC_CREATE_LINK_UP) 2366 cdev->enabled = FCOE_CTLR_ENABLED; 2367 else 2368 cdev->enabled = FCOE_CTLR_DISABLED; 2369 2370 if (link_state == BNX2FC_CREATE_LINK_UP && 2371 !bnx2fc_link_ok(lport)) { 2372 fcoe_ctlr_link_up(ctlr); 2373 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2374 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2375 } 2376 2377 BNX2FC_HBA_DBG(lport, "create: START DISC\n"); 2378 bnx2fc_start_disc(interface); 2379 2380 if (link_state == BNX2FC_CREATE_LINK_UP) 2381 interface->enabled = true; 2382 2383 /* 2384 * Release from kref_init in bnx2fc_interface_setup, on success 2385 * lport should be holding a reference taken in bnx2fc_if_create 2386 */ 2387 bnx2fc_interface_put(interface); 2388 /* put netdev that was held while calling dev_get_by_name */ 2389 mutex_unlock(&bnx2fc_dev_lock); 2390 rtnl_unlock(); 2391 return 0; 2392 2393 if_create_err: 2394 destroy_workqueue(interface->timer_work_queue); 2395 ifput_err: 2396 bnx2fc_net_cleanup(interface); 2397 bnx2fc_interface_put(interface); 2398 goto mod_err; 2399 netdev_err: 2400 module_put(THIS_MODULE); 2401 mod_err: 2402 mutex_unlock(&bnx2fc_dev_lock); 2403 rtnl_unlock(); 2404 return rc; 2405 } 2406 2407 /** 2408 * bnx2fc_create() - Create a bnx2fc interface 2409 * @netdev : The net_device object the Ethernet interface to create on 2410 * @fip_mode: The FIP mode for this creation 2411 * 2412 * Called from fcoe transport 2413 * 2414 * Returns: 0 for success 2415 */ 2416 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode) 2417 { 2418 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP); 2419 } 2420 2421 /** 2422 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs 2423 * @netdev: The net_device to be used by the allocated FCoE Controller 2424 * 2425 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr 2426 * in a link_down state. The allows the user an opportunity to configure 2427 * the FCoE Controller from sysfs before enabling the FCoE Controller. 2428 * 2429 * Creating in with this routine starts the FCoE Controller in Fabric 2430 * mode. The user can change to VN2VN or another mode before enabling. 2431 */ 2432 static int bnx2fc_ctlr_alloc(struct net_device *netdev) 2433 { 2434 return _bnx2fc_create(netdev, FIP_MODE_FABRIC, 2435 BNX2FC_CREATE_LINK_DOWN); 2436 } 2437 2438 /** 2439 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance 2440 * 2441 * @cnic: Pointer to cnic device instance 2442 * 2443 **/ 2444 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) 2445 { 2446 struct bnx2fc_hba *hba; 2447 2448 /* Called with bnx2fc_dev_lock held */ 2449 list_for_each_entry(hba, &adapter_list, list) { 2450 if (hba->cnic == cnic) 2451 return hba; 2452 } 2453 return NULL; 2454 } 2455 2456 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 2457 *netdev) 2458 { 2459 struct bnx2fc_interface *interface; 2460 2461 /* Called with bnx2fc_dev_lock held */ 2462 list_for_each_entry(interface, &if_list, list) { 2463 if (interface->netdev == netdev) 2464 return interface; 2465 } 2466 return NULL; 2467 } 2468 2469 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device 2470 *phys_dev) 2471 { 2472 struct bnx2fc_hba *hba; 2473 2474 /* Called with bnx2fc_dev_lock held */ 2475 list_for_each_entry(hba, &adapter_list, list) { 2476 if (hba->phys_dev == phys_dev) 2477 return hba; 2478 } 2479 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); 2480 return NULL; 2481 } 2482 2483 /** 2484 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources 2485 * 2486 * @dev cnic device handle 2487 */ 2488 static void bnx2fc_ulp_exit(struct cnic_dev *dev) 2489 { 2490 struct bnx2fc_hba *hba; 2491 struct bnx2fc_interface *interface, *tmp; 2492 2493 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); 2494 2495 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { 2496 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", 2497 dev->netdev->name, dev->flags); 2498 return; 2499 } 2500 2501 mutex_lock(&bnx2fc_dev_lock); 2502 hba = bnx2fc_find_hba_for_cnic(dev); 2503 if (!hba) { 2504 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", 2505 dev); 2506 mutex_unlock(&bnx2fc_dev_lock); 2507 return; 2508 } 2509 2510 list_del_init(&hba->list); 2511 adapter_count--; 2512 2513 list_for_each_entry_safe(interface, tmp, &if_list, list) 2514 /* destroy not called yet, move to quiesced list */ 2515 if (interface->hba == hba) 2516 __bnx2fc_destroy(interface); 2517 mutex_unlock(&bnx2fc_dev_lock); 2518 2519 /* Ensure ALL destroy work has been completed before return */ 2520 flush_workqueue(bnx2fc_wq); 2521 2522 bnx2fc_ulp_stop(hba); 2523 /* unregister cnic device */ 2524 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) 2525 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); 2526 bnx2fc_hba_destroy(hba); 2527 } 2528 2529 /** 2530 * bnx2fc_fcoe_reset - Resets the fcoe 2531 * 2532 * @shost: shost the reset is from 2533 * 2534 * Returns: always 0 2535 */ 2536 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) 2537 { 2538 struct fc_lport *lport = shost_priv(shost); 2539 fc_lport_reset(lport); 2540 return 0; 2541 } 2542 2543 2544 static bool bnx2fc_match(struct net_device *netdev) 2545 { 2546 struct net_device *phys_dev = netdev; 2547 2548 mutex_lock(&bnx2fc_dev_lock); 2549 if (netdev->priv_flags & IFF_802_1Q_VLAN) 2550 phys_dev = vlan_dev_real_dev(netdev); 2551 2552 if (bnx2fc_hba_lookup(phys_dev)) { 2553 mutex_unlock(&bnx2fc_dev_lock); 2554 return true; 2555 } 2556 2557 mutex_unlock(&bnx2fc_dev_lock); 2558 return false; 2559 } 2560 2561 2562 static struct fcoe_transport bnx2fc_transport = { 2563 .name = {"bnx2fc"}, 2564 .attached = false, 2565 .list = LIST_HEAD_INIT(bnx2fc_transport.list), 2566 .alloc = bnx2fc_ctlr_alloc, 2567 .match = bnx2fc_match, 2568 .create = bnx2fc_create, 2569 .destroy = bnx2fc_destroy, 2570 .enable = bnx2fc_enable, 2571 .disable = bnx2fc_disable, 2572 }; 2573 2574 /** 2575 * bnx2fc_percpu_thread_create - Create a receive thread for an 2576 * online CPU 2577 * 2578 * @cpu: cpu index for the online cpu 2579 */ 2580 static void bnx2fc_percpu_thread_create(unsigned int cpu) 2581 { 2582 struct bnx2fc_percpu_s *p; 2583 struct task_struct *thread; 2584 2585 p = &per_cpu(bnx2fc_percpu, cpu); 2586 2587 thread = kthread_create_on_node(bnx2fc_percpu_io_thread, 2588 (void *)p, cpu_to_node(cpu), 2589 "bnx2fc_thread/%d", cpu); 2590 /* bind thread to the cpu */ 2591 if (likely(!IS_ERR(thread))) { 2592 kthread_bind(thread, cpu); 2593 p->iothread = thread; 2594 wake_up_process(thread); 2595 } 2596 } 2597 2598 static void bnx2fc_percpu_thread_destroy(unsigned int cpu) 2599 { 2600 struct bnx2fc_percpu_s *p; 2601 struct task_struct *thread; 2602 struct bnx2fc_work *work, *tmp; 2603 2604 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); 2605 2606 /* Prevent any new work from being queued for this CPU */ 2607 p = &per_cpu(bnx2fc_percpu, cpu); 2608 spin_lock_bh(&p->fp_work_lock); 2609 thread = p->iothread; 2610 p->iothread = NULL; 2611 2612 2613 /* Free all work in the list */ 2614 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 2615 list_del_init(&work->list); 2616 bnx2fc_process_cq_compl(work->tgt, work->wqe); 2617 kfree(work); 2618 } 2619 2620 spin_unlock_bh(&p->fp_work_lock); 2621 2622 if (thread) 2623 kthread_stop(thread); 2624 } 2625 2626 /** 2627 * bnx2fc_cpu_callback - Handler for CPU hotplug events 2628 * 2629 * @nfb: The callback data block 2630 * @action: The event triggering the callback 2631 * @hcpu: The index of the CPU that the event is for 2632 * 2633 * This creates or destroys per-CPU data for fcoe 2634 * 2635 * Returns NOTIFY_OK always. 2636 */ 2637 static int bnx2fc_cpu_callback(struct notifier_block *nfb, 2638 unsigned long action, void *hcpu) 2639 { 2640 unsigned cpu = (unsigned long)hcpu; 2641 2642 switch (action) { 2643 case CPU_ONLINE: 2644 case CPU_ONLINE_FROZEN: 2645 printk(PFX "CPU %x online: Create Rx thread\n", cpu); 2646 bnx2fc_percpu_thread_create(cpu); 2647 break; 2648 case CPU_DEAD: 2649 case CPU_DEAD_FROZEN: 2650 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu); 2651 bnx2fc_percpu_thread_destroy(cpu); 2652 break; 2653 default: 2654 break; 2655 } 2656 return NOTIFY_OK; 2657 } 2658 2659 static int bnx2fc_slave_configure(struct scsi_device *sdev) 2660 { 2661 if (!bnx2fc_queue_depth) 2662 return 0; 2663 2664 scsi_change_queue_depth(sdev, bnx2fc_queue_depth); 2665 return 0; 2666 } 2667 2668 /** 2669 * bnx2fc_mod_init - module init entry point 2670 * 2671 * Initialize driver wide global data structures, and register 2672 * with cnic module 2673 **/ 2674 static int __init bnx2fc_mod_init(void) 2675 { 2676 struct fcoe_percpu_s *bg; 2677 struct task_struct *l2_thread; 2678 int rc = 0; 2679 unsigned int cpu = 0; 2680 struct bnx2fc_percpu_s *p; 2681 2682 printk(KERN_INFO PFX "%s", version); 2683 2684 /* register as a fcoe transport */ 2685 rc = fcoe_transport_attach(&bnx2fc_transport); 2686 if (rc) { 2687 printk(KERN_ERR "failed to register an fcoe transport, check " 2688 "if libfcoe is loaded\n"); 2689 goto out; 2690 } 2691 2692 INIT_LIST_HEAD(&adapter_list); 2693 INIT_LIST_HEAD(&if_list); 2694 mutex_init(&bnx2fc_dev_lock); 2695 adapter_count = 0; 2696 2697 /* Attach FC transport template */ 2698 rc = bnx2fc_attach_transport(); 2699 if (rc) 2700 goto detach_ft; 2701 2702 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); 2703 if (!bnx2fc_wq) { 2704 rc = -ENOMEM; 2705 goto release_bt; 2706 } 2707 2708 bg = &bnx2fc_global; 2709 skb_queue_head_init(&bg->fcoe_rx_list); 2710 l2_thread = kthread_create(bnx2fc_l2_rcv_thread, 2711 (void *)bg, 2712 "bnx2fc_l2_thread"); 2713 if (IS_ERR(l2_thread)) { 2714 rc = PTR_ERR(l2_thread); 2715 goto free_wq; 2716 } 2717 wake_up_process(l2_thread); 2718 spin_lock_bh(&bg->fcoe_rx_list.lock); 2719 bg->kthread = l2_thread; 2720 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2721 2722 for_each_possible_cpu(cpu) { 2723 p = &per_cpu(bnx2fc_percpu, cpu); 2724 INIT_LIST_HEAD(&p->work_list); 2725 spin_lock_init(&p->fp_work_lock); 2726 } 2727 2728 cpu_notifier_register_begin(); 2729 2730 for_each_online_cpu(cpu) { 2731 bnx2fc_percpu_thread_create(cpu); 2732 } 2733 2734 /* Initialize per CPU interrupt thread */ 2735 __register_hotcpu_notifier(&bnx2fc_cpu_notifier); 2736 2737 cpu_notifier_register_done(); 2738 2739 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); 2740 2741 return 0; 2742 2743 free_wq: 2744 destroy_workqueue(bnx2fc_wq); 2745 release_bt: 2746 bnx2fc_release_transport(); 2747 detach_ft: 2748 fcoe_transport_detach(&bnx2fc_transport); 2749 out: 2750 return rc; 2751 } 2752 2753 static void __exit bnx2fc_mod_exit(void) 2754 { 2755 LIST_HEAD(to_be_deleted); 2756 struct bnx2fc_hba *hba, *next; 2757 struct fcoe_percpu_s *bg; 2758 struct task_struct *l2_thread; 2759 struct sk_buff *skb; 2760 unsigned int cpu = 0; 2761 2762 /* 2763 * NOTE: Since cnic calls register_driver routine rtnl_lock, 2764 * it will have higher precedence than bnx2fc_dev_lock. 2765 * unregister_device() cannot be called with bnx2fc_dev_lock 2766 * held. 2767 */ 2768 mutex_lock(&bnx2fc_dev_lock); 2769 list_splice_init(&adapter_list, &to_be_deleted); 2770 adapter_count = 0; 2771 mutex_unlock(&bnx2fc_dev_lock); 2772 2773 /* Unregister with cnic */ 2774 list_for_each_entry_safe(hba, next, &to_be_deleted, list) { 2775 list_del_init(&hba->list); 2776 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", 2777 hba); 2778 bnx2fc_ulp_stop(hba); 2779 /* unregister cnic device */ 2780 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, 2781 &hba->reg_with_cnic)) 2782 hba->cnic->unregister_device(hba->cnic, 2783 CNIC_ULP_FCOE); 2784 bnx2fc_hba_destroy(hba); 2785 } 2786 cnic_unregister_driver(CNIC_ULP_FCOE); 2787 2788 /* Destroy global thread */ 2789 bg = &bnx2fc_global; 2790 spin_lock_bh(&bg->fcoe_rx_list.lock); 2791 l2_thread = bg->kthread; 2792 bg->kthread = NULL; 2793 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) 2794 kfree_skb(skb); 2795 2796 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2797 2798 if (l2_thread) 2799 kthread_stop(l2_thread); 2800 2801 cpu_notifier_register_begin(); 2802 2803 /* Destroy per cpu threads */ 2804 for_each_online_cpu(cpu) { 2805 bnx2fc_percpu_thread_destroy(cpu); 2806 } 2807 2808 __unregister_hotcpu_notifier(&bnx2fc_cpu_notifier); 2809 2810 cpu_notifier_register_done(); 2811 2812 destroy_workqueue(bnx2fc_wq); 2813 /* 2814 * detach from scsi transport 2815 * must happen after all destroys are done 2816 */ 2817 bnx2fc_release_transport(); 2818 2819 /* detach from fcoe transport */ 2820 fcoe_transport_detach(&bnx2fc_transport); 2821 } 2822 2823 module_init(bnx2fc_mod_init); 2824 module_exit(bnx2fc_mod_exit); 2825 2826 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { 2827 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, 2828 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, 2829 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, 2830 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, 2831 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, 2832 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, 2833 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, 2834 2835 .get_fcoe_fcf_selected = fcoe_fcf_get_selected, 2836 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, 2837 }; 2838 2839 static struct fc_function_template bnx2fc_transport_function = { 2840 .show_host_node_name = 1, 2841 .show_host_port_name = 1, 2842 .show_host_supported_classes = 1, 2843 .show_host_supported_fc4s = 1, 2844 .show_host_active_fc4s = 1, 2845 .show_host_maxframe_size = 1, 2846 2847 .show_host_port_id = 1, 2848 .show_host_supported_speeds = 1, 2849 .get_host_speed = fc_get_host_speed, 2850 .show_host_speed = 1, 2851 .show_host_port_type = 1, 2852 .get_host_port_state = fc_get_host_port_state, 2853 .show_host_port_state = 1, 2854 .show_host_symbolic_name = 1, 2855 2856 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2857 sizeof(struct bnx2fc_rport)), 2858 .show_rport_maxframe_size = 1, 2859 .show_rport_supported_classes = 1, 2860 2861 .show_host_fabric_name = 1, 2862 .show_starget_node_name = 1, 2863 .show_starget_port_name = 1, 2864 .show_starget_port_id = 1, 2865 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2866 .show_rport_dev_loss_tmo = 1, 2867 .get_fc_host_stats = bnx2fc_get_host_stats, 2868 2869 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2870 2871 .terminate_rport_io = fc_rport_terminate_io, 2872 2873 .vport_create = bnx2fc_vport_create, 2874 .vport_delete = bnx2fc_vport_destroy, 2875 .vport_disable = bnx2fc_vport_disable, 2876 .bsg_request = fc_lport_bsg_request, 2877 }; 2878 2879 static struct fc_function_template bnx2fc_vport_xport_function = { 2880 .show_host_node_name = 1, 2881 .show_host_port_name = 1, 2882 .show_host_supported_classes = 1, 2883 .show_host_supported_fc4s = 1, 2884 .show_host_active_fc4s = 1, 2885 .show_host_maxframe_size = 1, 2886 2887 .show_host_port_id = 1, 2888 .show_host_supported_speeds = 1, 2889 .get_host_speed = fc_get_host_speed, 2890 .show_host_speed = 1, 2891 .show_host_port_type = 1, 2892 .get_host_port_state = fc_get_host_port_state, 2893 .show_host_port_state = 1, 2894 .show_host_symbolic_name = 1, 2895 2896 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2897 sizeof(struct bnx2fc_rport)), 2898 .show_rport_maxframe_size = 1, 2899 .show_rport_supported_classes = 1, 2900 2901 .show_host_fabric_name = 1, 2902 .show_starget_node_name = 1, 2903 .show_starget_port_name = 1, 2904 .show_starget_port_id = 1, 2905 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2906 .show_rport_dev_loss_tmo = 1, 2907 .get_fc_host_stats = fc_get_host_stats, 2908 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2909 .terminate_rport_io = fc_rport_terminate_io, 2910 .bsg_request = fc_lport_bsg_request, 2911 }; 2912 2913 /* 2914 * Additional scsi_host attributes. 2915 */ 2916 static ssize_t 2917 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr, 2918 char *buf) 2919 { 2920 struct Scsi_Host *shost = class_to_shost(dev); 2921 struct fc_lport *lport = shost_priv(shost); 2922 struct fcoe_port *port = lport_priv(lport); 2923 struct bnx2fc_interface *interface = port->priv; 2924 2925 sprintf(buf, "%u\n", interface->tm_timeout); 2926 return strlen(buf); 2927 } 2928 2929 static ssize_t 2930 bnx2fc_tm_timeout_store(struct device *dev, 2931 struct device_attribute *attr, const char *buf, size_t count) 2932 { 2933 struct Scsi_Host *shost = class_to_shost(dev); 2934 struct fc_lport *lport = shost_priv(shost); 2935 struct fcoe_port *port = lport_priv(lport); 2936 struct bnx2fc_interface *interface = port->priv; 2937 int rval, val; 2938 2939 rval = kstrtouint(buf, 10, &val); 2940 if (rval) 2941 return rval; 2942 if (val > 255) 2943 return -ERANGE; 2944 2945 interface->tm_timeout = (u8)val; 2946 return strlen(buf); 2947 } 2948 2949 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show, 2950 bnx2fc_tm_timeout_store); 2951 2952 static struct device_attribute *bnx2fc_host_attrs[] = { 2953 &dev_attr_tm_timeout, 2954 NULL, 2955 }; 2956 2957 /** 2958 * scsi_host_template structure used while registering with SCSI-ml 2959 */ 2960 static struct scsi_host_template bnx2fc_shost_template = { 2961 .module = THIS_MODULE, 2962 .name = "QLogic Offload FCoE Initiator", 2963 .queuecommand = bnx2fc_queuecommand, 2964 .eh_abort_handler = bnx2fc_eh_abort, /* abts */ 2965 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ 2966 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ 2967 .eh_host_reset_handler = fc_eh_host_reset, 2968 .slave_alloc = fc_slave_alloc, 2969 .change_queue_depth = scsi_change_queue_depth, 2970 .this_id = -1, 2971 .cmd_per_lun = 3, 2972 .use_clustering = ENABLE_CLUSTERING, 2973 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, 2974 .max_sectors = 1024, 2975 .track_queue_depth = 1, 2976 .slave_configure = bnx2fc_slave_configure, 2977 .shost_attrs = bnx2fc_host_attrs, 2978 }; 2979 2980 static struct libfc_function_template bnx2fc_libfc_fcn_templ = { 2981 .frame_send = bnx2fc_xmit, 2982 .elsct_send = bnx2fc_elsct_send, 2983 .fcp_abort_io = bnx2fc_abort_io, 2984 .fcp_cleanup = bnx2fc_cleanup, 2985 .get_lesb = fcoe_get_lesb, 2986 .rport_event_callback = bnx2fc_rport_event_handler, 2987 }; 2988 2989 /** 2990 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface 2991 * structure carrying callback function pointers 2992 */ 2993 static struct cnic_ulp_ops bnx2fc_cnic_cb = { 2994 .owner = THIS_MODULE, 2995 .cnic_init = bnx2fc_ulp_init, 2996 .cnic_exit = bnx2fc_ulp_exit, 2997 .cnic_start = bnx2fc_ulp_start, 2998 .cnic_stop = bnx2fc_ulp_stop, 2999 .indicate_kcqes = bnx2fc_indicate_kcqe, 3000 .indicate_netevent = bnx2fc_indicate_netevent, 3001 .cnic_get_stats = bnx2fc_ulp_get_stats, 3002 }; 3003