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 inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport) 131 { 132 return ((struct bnx2fc_interface *) 133 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev; 134 } 135 136 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev) 137 { 138 struct fcoe_ctlr_device *ctlr_dev = 139 fcoe_fcf_dev_to_ctlr_dev(fcf_dev); 140 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); 141 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr); 142 143 fcf_dev->vlan_id = fcoe->vlan_id; 144 } 145 146 static void bnx2fc_clean_rx_queue(struct fc_lport *lp) 147 { 148 struct fcoe_percpu_s *bg; 149 struct fcoe_rcv_info *fr; 150 struct sk_buff_head *list; 151 struct sk_buff *skb, *next; 152 struct sk_buff *head; 153 154 bg = &bnx2fc_global; 155 spin_lock_bh(&bg->fcoe_rx_list.lock); 156 list = &bg->fcoe_rx_list; 157 head = list->next; 158 for (skb = head; skb != (struct sk_buff *)list; 159 skb = next) { 160 next = skb->next; 161 fr = fcoe_dev_from_skb(skb); 162 if (fr->fr_dev == lp) { 163 __skb_unlink(skb, list); 164 kfree_skb(skb); 165 } 166 } 167 spin_unlock_bh(&bg->fcoe_rx_list.lock); 168 } 169 170 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen) 171 { 172 int rc; 173 spin_lock(&bnx2fc_global_lock); 174 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global); 175 spin_unlock(&bnx2fc_global_lock); 176 177 return rc; 178 } 179 180 static void bnx2fc_abort_io(struct fc_lport *lport) 181 { 182 /* 183 * This function is no-op for bnx2fc, but we do 184 * not want to leave it as NULL either, as libfc 185 * can call the default function which is 186 * fc_fcp_abort_io. 187 */ 188 } 189 190 static void bnx2fc_cleanup(struct fc_lport *lport) 191 { 192 struct fcoe_port *port = lport_priv(lport); 193 struct bnx2fc_interface *interface = port->priv; 194 struct bnx2fc_hba *hba = interface->hba; 195 struct bnx2fc_rport *tgt; 196 int i; 197 198 BNX2FC_MISC_DBG("Entered %s\n", __func__); 199 mutex_lock(&hba->hba_mutex); 200 spin_lock_bh(&hba->hba_lock); 201 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) { 202 tgt = hba->tgt_ofld_list[i]; 203 if (tgt) { 204 /* Cleanup IOs belonging to requested vport */ 205 if (tgt->port == port) { 206 spin_unlock_bh(&hba->hba_lock); 207 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n"); 208 bnx2fc_flush_active_ios(tgt); 209 spin_lock_bh(&hba->hba_lock); 210 } 211 } 212 } 213 spin_unlock_bh(&hba->hba_lock); 214 mutex_unlock(&hba->hba_mutex); 215 } 216 217 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt, 218 struct fc_frame *fp) 219 { 220 struct fc_rport_priv *rdata = tgt->rdata; 221 struct fc_frame_header *fh; 222 int rc = 0; 223 224 fh = fc_frame_header_get(fp); 225 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, " 226 "r_ctl = 0x%x\n", rdata->ids.port_id, 227 ntohs(fh->fh_ox_id), fh->fh_r_ctl); 228 if ((fh->fh_type == FC_TYPE_ELS) && 229 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 230 231 switch (fc_frame_payload_op(fp)) { 232 case ELS_ADISC: 233 rc = bnx2fc_send_adisc(tgt, fp); 234 break; 235 case ELS_LOGO: 236 rc = bnx2fc_send_logo(tgt, fp); 237 break; 238 case ELS_RLS: 239 rc = bnx2fc_send_rls(tgt, fp); 240 break; 241 default: 242 break; 243 } 244 } else if ((fh->fh_type == FC_TYPE_BLS) && 245 (fh->fh_r_ctl == FC_RCTL_BA_ABTS)) 246 BNX2FC_TGT_DBG(tgt, "ABTS frame\n"); 247 else { 248 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x " 249 "rctl 0x%x thru non-offload path\n", 250 fh->fh_type, fh->fh_r_ctl); 251 return -ENODEV; 252 } 253 if (rc) 254 return -ENOMEM; 255 else 256 return 0; 257 } 258 259 /** 260 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function 261 * 262 * @lport: the associated local port 263 * @fp: the fc_frame to be transmitted 264 */ 265 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp) 266 { 267 struct ethhdr *eh; 268 struct fcoe_crc_eof *cp; 269 struct sk_buff *skb; 270 struct fc_frame_header *fh; 271 struct bnx2fc_interface *interface; 272 struct fcoe_ctlr *ctlr; 273 struct bnx2fc_hba *hba; 274 struct fcoe_port *port; 275 struct fcoe_hdr *hp; 276 struct bnx2fc_rport *tgt; 277 struct fc_stats *stats; 278 u8 sof, eof; 279 u32 crc; 280 unsigned int hlen, tlen, elen; 281 int wlen, rc = 0; 282 283 port = (struct fcoe_port *)lport_priv(lport); 284 interface = port->priv; 285 ctlr = bnx2fc_to_ctlr(interface); 286 hba = interface->hba; 287 288 fh = fc_frame_header_get(fp); 289 290 skb = fp_skb(fp); 291 if (!lport->link_up) { 292 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n"); 293 kfree_skb(skb); 294 return 0; 295 } 296 297 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 298 if (!ctlr->sel_fcf) { 299 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n"); 300 kfree_skb(skb); 301 return -EINVAL; 302 } 303 if (fcoe_ctlr_els_send(ctlr, lport, skb)) 304 return 0; 305 } 306 307 sof = fr_sof(fp); 308 eof = fr_eof(fp); 309 310 /* 311 * Snoop the frame header to check if the frame is for 312 * an offloaded session 313 */ 314 /* 315 * tgt_ofld_list access is synchronized using 316 * both hba mutex and hba lock. Atleast hba mutex or 317 * hba lock needs to be held for read access. 318 */ 319 320 spin_lock_bh(&hba->hba_lock); 321 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id)); 322 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) { 323 /* This frame is for offloaded session */ 324 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session " 325 "port_id = 0x%x\n", ntoh24(fh->fh_d_id)); 326 spin_unlock_bh(&hba->hba_lock); 327 rc = bnx2fc_xmit_l2_frame(tgt, fp); 328 if (rc != -ENODEV) { 329 kfree_skb(skb); 330 return rc; 331 } 332 } else { 333 spin_unlock_bh(&hba->hba_lock); 334 } 335 336 elen = sizeof(struct ethhdr); 337 hlen = sizeof(struct fcoe_hdr); 338 tlen = sizeof(struct fcoe_crc_eof); 339 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 340 341 skb->ip_summed = CHECKSUM_NONE; 342 crc = fcoe_fc_crc(fp); 343 344 /* copy port crc and eof to the skb buff */ 345 if (skb_is_nonlinear(skb)) { 346 skb_frag_t *frag; 347 if (bnx2fc_get_paged_crc_eof(skb, tlen)) { 348 kfree_skb(skb); 349 return -ENOMEM; 350 } 351 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 352 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; 353 } else { 354 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); 355 } 356 357 memset(cp, 0, sizeof(*cp)); 358 cp->fcoe_eof = eof; 359 cp->fcoe_crc32 = cpu_to_le32(~crc); 360 if (skb_is_nonlinear(skb)) { 361 kunmap_atomic(cp); 362 cp = NULL; 363 } 364 365 /* adjust skb network/transport offsets to match mac/fcoe/port */ 366 skb_push(skb, elen + hlen); 367 skb_reset_mac_header(skb); 368 skb_reset_network_header(skb); 369 skb->mac_len = elen; 370 skb->protocol = htons(ETH_P_FCOE); 371 skb->dev = interface->netdev; 372 373 /* fill up mac and fcoe headers */ 374 eh = eth_hdr(skb); 375 eh->h_proto = htons(ETH_P_FCOE); 376 if (ctlr->map_dest) 377 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 378 else 379 /* insert GW address */ 380 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); 381 382 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) 383 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); 384 else 385 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); 386 387 hp = (struct fcoe_hdr *)(eh + 1); 388 memset(hp, 0, sizeof(*hp)); 389 if (FC_FCOE_VER) 390 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 391 hp->fcoe_sof = sof; 392 393 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ 394 if (lport->seq_offload && fr_max_payload(fp)) { 395 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; 396 skb_shinfo(skb)->gso_size = fr_max_payload(fp); 397 } else { 398 skb_shinfo(skb)->gso_type = 0; 399 skb_shinfo(skb)->gso_size = 0; 400 } 401 402 /*update tx stats */ 403 stats = per_cpu_ptr(lport->stats, get_cpu()); 404 stats->TxFrames++; 405 stats->TxWords += wlen; 406 put_cpu(); 407 408 /* send down to lld */ 409 fr_dev(fp) = lport; 410 if (port->fcoe_pending_queue.qlen) 411 fcoe_check_wait_queue(lport, skb); 412 else if (fcoe_start_io(skb)) 413 fcoe_check_wait_queue(lport, skb); 414 415 return 0; 416 } 417 418 /** 419 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ 420 * 421 * @skb: the receive socket buffer 422 * @dev: associated net device 423 * @ptype: context 424 * @olddev: last device 425 * 426 * This function receives the packet and builds FC frame and passes it up 427 */ 428 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev, 429 struct packet_type *ptype, struct net_device *olddev) 430 { 431 struct fc_lport *lport; 432 struct bnx2fc_interface *interface; 433 struct fcoe_ctlr *ctlr; 434 struct fc_frame_header *fh; 435 struct fcoe_rcv_info *fr; 436 struct fcoe_percpu_s *bg; 437 struct sk_buff *tmp_skb; 438 unsigned short oxid; 439 440 interface = container_of(ptype, struct bnx2fc_interface, 441 fcoe_packet_type); 442 ctlr = bnx2fc_to_ctlr(interface); 443 lport = ctlr->lp; 444 445 if (unlikely(lport == NULL)) { 446 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n"); 447 goto err; 448 } 449 450 tmp_skb = skb_share_check(skb, GFP_ATOMIC); 451 if (!tmp_skb) 452 goto err; 453 454 skb = tmp_skb; 455 456 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { 457 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n"); 458 goto err; 459 } 460 461 /* 462 * Check for minimum frame length, and make sure required FCoE 463 * and FC headers are pulled into the linear data area. 464 */ 465 if (unlikely((skb->len < FCOE_MIN_FRAME) || 466 !pskb_may_pull(skb, FCOE_HEADER_LEN))) 467 goto err; 468 469 skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); 470 fh = (struct fc_frame_header *) skb_transport_header(skb); 471 472 oxid = ntohs(fh->fh_ox_id); 473 474 fr = fcoe_dev_from_skb(skb); 475 fr->fr_dev = lport; 476 477 bg = &bnx2fc_global; 478 spin_lock(&bg->fcoe_rx_list.lock); 479 480 __skb_queue_tail(&bg->fcoe_rx_list, skb); 481 if (bg->fcoe_rx_list.qlen == 1) 482 wake_up_process(bg->kthread); 483 484 spin_unlock(&bg->fcoe_rx_list.lock); 485 486 return 0; 487 err: 488 kfree_skb(skb); 489 return -1; 490 } 491 492 static int bnx2fc_l2_rcv_thread(void *arg) 493 { 494 struct fcoe_percpu_s *bg = arg; 495 struct sk_buff *skb; 496 497 set_user_nice(current, MIN_NICE); 498 set_current_state(TASK_INTERRUPTIBLE); 499 while (!kthread_should_stop()) { 500 schedule(); 501 spin_lock_bh(&bg->fcoe_rx_list.lock); 502 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { 503 spin_unlock_bh(&bg->fcoe_rx_list.lock); 504 bnx2fc_recv_frame(skb); 505 spin_lock_bh(&bg->fcoe_rx_list.lock); 506 } 507 __set_current_state(TASK_INTERRUPTIBLE); 508 spin_unlock_bh(&bg->fcoe_rx_list.lock); 509 } 510 __set_current_state(TASK_RUNNING); 511 return 0; 512 } 513 514 515 static void bnx2fc_recv_frame(struct sk_buff *skb) 516 { 517 u32 fr_len; 518 struct fc_lport *lport; 519 struct fcoe_rcv_info *fr; 520 struct fc_stats *stats; 521 struct fc_frame_header *fh; 522 struct fcoe_crc_eof crc_eof; 523 struct fc_frame *fp; 524 struct fc_lport *vn_port; 525 struct fcoe_port *port; 526 u8 *mac = NULL; 527 u8 *dest_mac = NULL; 528 struct fcoe_hdr *hp; 529 530 fr = fcoe_dev_from_skb(skb); 531 lport = fr->fr_dev; 532 if (unlikely(lport == NULL)) { 533 printk(KERN_ERR PFX "Invalid lport struct\n"); 534 kfree_skb(skb); 535 return; 536 } 537 538 if (skb_is_nonlinear(skb)) 539 skb_linearize(skb); 540 mac = eth_hdr(skb)->h_source; 541 dest_mac = eth_hdr(skb)->h_dest; 542 543 /* Pull the header */ 544 hp = (struct fcoe_hdr *) skb_network_header(skb); 545 fh = (struct fc_frame_header *) skb_transport_header(skb); 546 skb_pull(skb, sizeof(struct fcoe_hdr)); 547 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 548 549 fp = (struct fc_frame *)skb; 550 fc_frame_init(fp); 551 fr_dev(fp) = lport; 552 fr_sof(fp) = hp->fcoe_sof; 553 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 554 kfree_skb(skb); 555 return; 556 } 557 fr_eof(fp) = crc_eof.fcoe_eof; 558 fr_crc(fp) = crc_eof.fcoe_crc32; 559 if (pskb_trim(skb, fr_len)) { 560 kfree_skb(skb); 561 return; 562 } 563 564 fh = fc_frame_header_get(fp); 565 566 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 567 if (vn_port) { 568 port = lport_priv(vn_port); 569 if (!ether_addr_equal(port->data_src_addr, dest_mac)) { 570 BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); 571 kfree_skb(skb); 572 return; 573 } 574 } 575 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 576 fh->fh_type == FC_TYPE_FCP) { 577 /* Drop FCP data. We dont this in L2 path */ 578 kfree_skb(skb); 579 return; 580 } 581 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 582 fh->fh_type == FC_TYPE_ELS) { 583 switch (fc_frame_payload_op(fp)) { 584 case ELS_LOGO: 585 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 586 /* drop non-FIP LOGO */ 587 kfree_skb(skb); 588 return; 589 } 590 break; 591 } 592 } 593 594 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 595 /* Drop incoming ABTS */ 596 kfree_skb(skb); 597 return; 598 } 599 600 stats = per_cpu_ptr(lport->stats, smp_processor_id()); 601 stats->RxFrames++; 602 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; 603 604 if (le32_to_cpu(fr_crc(fp)) != 605 ~crc32(~0, skb->data, fr_len)) { 606 if (stats->InvalidCRCCount < 5) 607 printk(KERN_WARNING PFX "dropping frame with " 608 "CRC error\n"); 609 stats->InvalidCRCCount++; 610 kfree_skb(skb); 611 return; 612 } 613 fc_exch_recv(lport, fp); 614 } 615 616 /** 617 * bnx2fc_percpu_io_thread - thread per cpu for ios 618 * 619 * @arg: ptr to bnx2fc_percpu_info structure 620 */ 621 static int bnx2fc_percpu_io_thread(void *arg) 622 { 623 struct bnx2fc_percpu_s *p = arg; 624 struct bnx2fc_work *work, *tmp; 625 LIST_HEAD(work_list); 626 627 set_user_nice(current, MIN_NICE); 628 set_current_state(TASK_INTERRUPTIBLE); 629 while (!kthread_should_stop()) { 630 schedule(); 631 spin_lock_bh(&p->fp_work_lock); 632 while (!list_empty(&p->work_list)) { 633 list_splice_init(&p->work_list, &work_list); 634 spin_unlock_bh(&p->fp_work_lock); 635 636 list_for_each_entry_safe(work, tmp, &work_list, list) { 637 list_del_init(&work->list); 638 bnx2fc_process_cq_compl(work->tgt, work->wqe); 639 kfree(work); 640 } 641 642 spin_lock_bh(&p->fp_work_lock); 643 } 644 __set_current_state(TASK_INTERRUPTIBLE); 645 spin_unlock_bh(&p->fp_work_lock); 646 } 647 __set_current_state(TASK_RUNNING); 648 649 return 0; 650 } 651 652 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) 653 { 654 struct fc_host_statistics *bnx2fc_stats; 655 struct fc_lport *lport = shost_priv(shost); 656 struct fcoe_port *port = lport_priv(lport); 657 struct bnx2fc_interface *interface = port->priv; 658 struct bnx2fc_hba *hba = interface->hba; 659 struct fcoe_statistics_params *fw_stats; 660 int rc = 0; 661 662 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; 663 if (!fw_stats) 664 return NULL; 665 666 mutex_lock(&hba->hba_stats_mutex); 667 668 bnx2fc_stats = fc_get_host_stats(shost); 669 670 init_completion(&hba->stat_req_done); 671 if (bnx2fc_send_stat_req(hba)) 672 goto unlock_stats_mutex; 673 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); 674 if (!rc) { 675 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); 676 goto unlock_stats_mutex; 677 } 678 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); 679 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; 680 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); 681 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; 682 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); 683 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); 684 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); 685 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; 686 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); 687 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); 688 689 bnx2fc_stats->dumped_frames = 0; 690 bnx2fc_stats->lip_count = 0; 691 bnx2fc_stats->nos_count = 0; 692 bnx2fc_stats->loss_of_sync_count = 0; 693 bnx2fc_stats->loss_of_signal_count = 0; 694 bnx2fc_stats->prim_seq_protocol_err_count = 0; 695 696 memcpy(&hba->prev_stats, hba->stats_buffer, 697 sizeof(struct fcoe_statistics_params)); 698 699 unlock_stats_mutex: 700 mutex_unlock(&hba->hba_stats_mutex); 701 return bnx2fc_stats; 702 } 703 704 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) 705 { 706 struct fcoe_port *port = lport_priv(lport); 707 struct bnx2fc_interface *interface = port->priv; 708 struct bnx2fc_hba *hba = interface->hba; 709 struct Scsi_Host *shost = lport->host; 710 int rc = 0; 711 712 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; 713 shost->max_lun = bnx2fc_max_luns; 714 shost->max_id = BNX2FC_MAX_FCP_TGT; 715 shost->max_channel = 0; 716 if (lport->vport) 717 shost->transportt = bnx2fc_vport_xport_template; 718 else 719 shost->transportt = bnx2fc_transport_template; 720 721 /* Add the new host to SCSI-ml */ 722 rc = scsi_add_host(lport->host, dev); 723 if (rc) { 724 printk(KERN_ERR PFX "Error on scsi_add_host\n"); 725 return rc; 726 } 727 if (!lport->vport) 728 fc_host_max_npiv_vports(lport->host) = USHRT_MAX; 729 snprintf(fc_host_symbolic_name(lport->host), 256, 730 "%s (QLogic %s) v%s over %s", 731 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION, 732 interface->netdev->name); 733 734 return 0; 735 } 736 737 static int bnx2fc_link_ok(struct fc_lport *lport) 738 { 739 struct fcoe_port *port = lport_priv(lport); 740 struct bnx2fc_interface *interface = port->priv; 741 struct bnx2fc_hba *hba = interface->hba; 742 struct net_device *dev = hba->phys_dev; 743 int rc = 0; 744 745 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) 746 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 747 else { 748 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 749 rc = -1; 750 } 751 return rc; 752 } 753 754 /** 755 * bnx2fc_get_link_state - get network link state 756 * 757 * @hba: adapter instance pointer 758 * 759 * updates adapter structure flag based on netdev state 760 */ 761 void bnx2fc_get_link_state(struct bnx2fc_hba *hba) 762 { 763 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) 764 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 765 else 766 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 767 } 768 769 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) 770 { 771 struct bnx2fc_hba *hba; 772 struct bnx2fc_interface *interface; 773 struct fcoe_ctlr *ctlr; 774 struct fcoe_port *port; 775 u64 wwnn, wwpn; 776 777 port = lport_priv(lport); 778 interface = port->priv; 779 ctlr = bnx2fc_to_ctlr(interface); 780 hba = interface->hba; 781 782 /* require support for get_pauseparam ethtool op. */ 783 if (!hba->phys_dev->ethtool_ops || 784 !hba->phys_dev->ethtool_ops->get_pauseparam) 785 return -EOPNOTSUPP; 786 787 if (fc_set_mfs(lport, BNX2FC_MFS)) 788 return -EINVAL; 789 790 skb_queue_head_init(&port->fcoe_pending_queue); 791 port->fcoe_pending_queue_active = 0; 792 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport); 793 794 fcoe_link_speed_update(lport); 795 796 if (!lport->vport) { 797 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) 798 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 799 1, 0); 800 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); 801 fc_set_wwnn(lport, wwnn); 802 803 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) 804 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 805 2, 0); 806 807 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); 808 fc_set_wwpn(lport, wwpn); 809 } 810 811 return 0; 812 } 813 814 static void bnx2fc_destroy_timer(unsigned long data) 815 { 816 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data; 817 818 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " 819 "Destroy compl not received!!\n"); 820 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 821 wake_up_interruptible(&hba->destroy_wait); 822 } 823 824 /** 825 * bnx2fc_indicate_netevent - Generic netdev event handler 826 * 827 * @context: adapter structure pointer 828 * @event: event type 829 * @vlan_id: vlan id - associated vlan id with this event 830 * 831 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and 832 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. 833 */ 834 static void bnx2fc_indicate_netevent(void *context, unsigned long event, 835 u16 vlan_id) 836 { 837 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; 838 struct fcoe_ctlr_device *cdev; 839 struct fc_lport *lport; 840 struct fc_lport *vport; 841 struct bnx2fc_interface *interface, *tmp; 842 struct fcoe_ctlr *ctlr; 843 int wait_for_upload = 0; 844 u32 link_possible = 1; 845 846 if (vlan_id != 0 && event != NETDEV_UNREGISTER) 847 return; 848 849 switch (event) { 850 case NETDEV_UP: 851 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 852 printk(KERN_ERR "indicate_netevent: "\ 853 "hba is not UP!!\n"); 854 break; 855 856 case NETDEV_DOWN: 857 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 858 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 859 link_possible = 0; 860 break; 861 862 case NETDEV_GOING_DOWN: 863 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 864 link_possible = 0; 865 break; 866 867 case NETDEV_CHANGE: 868 break; 869 870 case NETDEV_UNREGISTER: 871 if (!vlan_id) 872 return; 873 mutex_lock(&bnx2fc_dev_lock); 874 list_for_each_entry_safe(interface, tmp, &if_list, list) { 875 if (interface->hba == hba && 876 interface->vlan_id == (vlan_id & VLAN_VID_MASK)) 877 __bnx2fc_destroy(interface); 878 } 879 mutex_unlock(&bnx2fc_dev_lock); 880 881 /* Ensure ALL destroy work has been completed before return */ 882 flush_workqueue(bnx2fc_wq); 883 return; 884 885 default: 886 return; 887 } 888 889 mutex_lock(&bnx2fc_dev_lock); 890 list_for_each_entry(interface, &if_list, list) { 891 892 if (interface->hba != hba) 893 continue; 894 895 ctlr = bnx2fc_to_ctlr(interface); 896 lport = ctlr->lp; 897 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", 898 interface->netdev->name, event); 899 900 fcoe_link_speed_update(lport); 901 902 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 903 904 if (link_possible && !bnx2fc_link_ok(lport)) { 905 switch (cdev->enabled) { 906 case FCOE_CTLR_DISABLED: 907 pr_info("Link up while interface is disabled.\n"); 908 break; 909 case FCOE_CTLR_ENABLED: 910 case FCOE_CTLR_UNUSED: 911 /* Reset max recv frame size to default */ 912 fc_set_mfs(lport, BNX2FC_MFS); 913 /* 914 * ctlr link up will only be handled during 915 * enable to avoid sending discovery 916 * solicitation on a stale vlan 917 */ 918 if (interface->enabled) 919 fcoe_ctlr_link_up(ctlr); 920 }; 921 } else if (fcoe_ctlr_link_down(ctlr)) { 922 switch (cdev->enabled) { 923 case FCOE_CTLR_DISABLED: 924 pr_info("Link down while interface is disabled.\n"); 925 break; 926 case FCOE_CTLR_ENABLED: 927 case FCOE_CTLR_UNUSED: 928 mutex_lock(&lport->lp_mutex); 929 list_for_each_entry(vport, &lport->vports, list) 930 fc_host_port_type(vport->host) = 931 FC_PORTTYPE_UNKNOWN; 932 mutex_unlock(&lport->lp_mutex); 933 fc_host_port_type(lport->host) = 934 FC_PORTTYPE_UNKNOWN; 935 per_cpu_ptr(lport->stats, 936 get_cpu())->LinkFailureCount++; 937 put_cpu(); 938 fcoe_clean_pending_queue(lport); 939 wait_for_upload = 1; 940 }; 941 } 942 } 943 mutex_unlock(&bnx2fc_dev_lock); 944 945 if (wait_for_upload) { 946 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 947 init_waitqueue_head(&hba->shutdown_wait); 948 BNX2FC_MISC_DBG("indicate_netevent " 949 "num_ofld_sess = %d\n", 950 hba->num_ofld_sess); 951 hba->wait_for_link_down = 1; 952 wait_event_interruptible(hba->shutdown_wait, 953 (hba->num_ofld_sess == 0)); 954 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", 955 hba->num_ofld_sess); 956 hba->wait_for_link_down = 0; 957 958 if (signal_pending(current)) 959 flush_signals(current); 960 } 961 } 962 963 static int bnx2fc_libfc_config(struct fc_lport *lport) 964 { 965 966 /* Set the function pointers set by bnx2fc driver */ 967 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, 968 sizeof(struct libfc_function_template)); 969 fc_elsct_init(lport); 970 fc_exch_init(lport); 971 fc_disc_init(lport); 972 fc_disc_config(lport, lport); 973 return 0; 974 } 975 976 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba) 977 { 978 int fcoe_min_xid, fcoe_max_xid; 979 980 fcoe_min_xid = hba->max_xid + 1; 981 if (nr_cpu_ids <= 2) 982 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET; 983 else 984 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET; 985 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid, 986 fcoe_max_xid, NULL)) { 987 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); 988 return -ENOMEM; 989 } 990 991 return 0; 992 } 993 994 static int bnx2fc_lport_config(struct fc_lport *lport) 995 { 996 lport->link_up = 0; 997 lport->qfull = 0; 998 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; 999 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; 1000 lport->e_d_tov = 2 * 1000; 1001 lport->r_a_tov = 10 * 1000; 1002 1003 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1004 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1005 lport->does_npiv = 1; 1006 1007 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); 1008 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; 1009 1010 /* alloc stats structure */ 1011 if (fc_lport_init_stats(lport)) 1012 return -ENOMEM; 1013 1014 /* Finish fc_lport configuration */ 1015 fc_lport_config(lport); 1016 1017 return 0; 1018 } 1019 1020 /** 1021 * bnx2fc_fip_recv - handle a received FIP frame. 1022 * 1023 * @skb: the received skb 1024 * @dev: associated &net_device 1025 * @ptype: the &packet_type structure which was used to register this handler. 1026 * @orig_dev: original receive &net_device, in case @ dev is a bond. 1027 * 1028 * Returns: 0 for success 1029 */ 1030 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, 1031 struct packet_type *ptype, 1032 struct net_device *orig_dev) 1033 { 1034 struct bnx2fc_interface *interface; 1035 struct fcoe_ctlr *ctlr; 1036 interface = container_of(ptype, struct bnx2fc_interface, 1037 fip_packet_type); 1038 ctlr = bnx2fc_to_ctlr(interface); 1039 fcoe_ctlr_recv(ctlr, skb); 1040 return 0; 1041 } 1042 1043 /** 1044 * bnx2fc_update_src_mac - Update Ethernet MAC filters. 1045 * 1046 * @fip: FCoE controller. 1047 * @old: Unicast MAC address to delete if the MAC is non-zero. 1048 * @new: Unicast MAC address to add. 1049 * 1050 * Remove any previously-set unicast MAC filter. 1051 * Add secondary FCoE MAC address filter for our OUI. 1052 */ 1053 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) 1054 { 1055 struct fcoe_port *port = lport_priv(lport); 1056 1057 memcpy(port->data_src_addr, addr, ETH_ALEN); 1058 } 1059 1060 /** 1061 * bnx2fc_get_src_mac - return the ethernet source address for an lport 1062 * 1063 * @lport: libfc port 1064 */ 1065 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) 1066 { 1067 struct fcoe_port *port; 1068 1069 port = (struct fcoe_port *)lport_priv(lport); 1070 return port->data_src_addr; 1071 } 1072 1073 /** 1074 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. 1075 * 1076 * @fip: FCoE controller. 1077 * @skb: FIP Packet. 1078 */ 1079 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 1080 { 1081 struct fip_header *fiph; 1082 struct ethhdr *eth_hdr; 1083 u16 op; 1084 u8 sub; 1085 1086 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); 1087 eth_hdr = (struct ethhdr *)skb_mac_header(skb); 1088 op = ntohs(fiph->fip_op); 1089 sub = fiph->fip_subcode; 1090 1091 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka) 1092 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n", 1093 eth_hdr->h_source, eth_hdr->h_dest); 1094 1095 skb->dev = bnx2fc_from_ctlr(fip)->netdev; 1096 dev_queue_xmit(skb); 1097 } 1098 1099 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) 1100 { 1101 struct Scsi_Host *shost = vport_to_shost(vport); 1102 struct fc_lport *n_port = shost_priv(shost); 1103 struct fcoe_port *port = lport_priv(n_port); 1104 struct bnx2fc_interface *interface = port->priv; 1105 struct net_device *netdev = interface->netdev; 1106 struct fc_lport *vn_port; 1107 int rc; 1108 char buf[32]; 1109 1110 rc = fcoe_validate_vport_create(vport); 1111 if (rc) { 1112 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1113 printk(KERN_ERR PFX "Failed to create vport, " 1114 "WWPN (0x%s) already exists\n", 1115 buf); 1116 return rc; 1117 } 1118 1119 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1120 printk(KERN_ERR PFX "vn ports cannot be created on" 1121 "this interface\n"); 1122 return -EIO; 1123 } 1124 rtnl_lock(); 1125 mutex_lock(&bnx2fc_dev_lock); 1126 vn_port = bnx2fc_if_create(interface, &vport->dev, 1); 1127 mutex_unlock(&bnx2fc_dev_lock); 1128 rtnl_unlock(); 1129 1130 if (!vn_port) { 1131 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", 1132 netdev->name); 1133 return -EIO; 1134 } 1135 1136 if (bnx2fc_devloss_tmo) 1137 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo; 1138 1139 if (disabled) { 1140 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1141 } else { 1142 vn_port->boot_time = jiffies; 1143 fc_lport_init(vn_port); 1144 fc_fabric_login(vn_port); 1145 fc_vport_setlink(vn_port); 1146 } 1147 return 0; 1148 } 1149 1150 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) 1151 { 1152 struct bnx2fc_lport *blport, *tmp; 1153 1154 spin_lock_bh(&hba->hba_lock); 1155 list_for_each_entry_safe(blport, tmp, &hba->vports, list) { 1156 if (blport->lport == lport) { 1157 list_del(&blport->list); 1158 kfree(blport); 1159 } 1160 } 1161 spin_unlock_bh(&hba->hba_lock); 1162 } 1163 1164 static int bnx2fc_vport_destroy(struct fc_vport *vport) 1165 { 1166 struct Scsi_Host *shost = vport_to_shost(vport); 1167 struct fc_lport *n_port = shost_priv(shost); 1168 struct fc_lport *vn_port = vport->dd_data; 1169 struct fcoe_port *port = lport_priv(vn_port); 1170 struct bnx2fc_interface *interface = port->priv; 1171 struct fc_lport *v_port; 1172 bool found = false; 1173 1174 mutex_lock(&n_port->lp_mutex); 1175 list_for_each_entry(v_port, &n_port->vports, list) 1176 if (v_port->vport == vport) { 1177 found = true; 1178 break; 1179 } 1180 1181 if (!found) { 1182 mutex_unlock(&n_port->lp_mutex); 1183 return -ENOENT; 1184 } 1185 list_del(&vn_port->list); 1186 mutex_unlock(&n_port->lp_mutex); 1187 bnx2fc_free_vport(interface->hba, port->lport); 1188 bnx2fc_port_shutdown(port->lport); 1189 bnx2fc_interface_put(interface); 1190 queue_work(bnx2fc_wq, &port->destroy_work); 1191 return 0; 1192 } 1193 1194 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) 1195 { 1196 struct fc_lport *lport = vport->dd_data; 1197 1198 if (disable) { 1199 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1200 fc_fabric_logoff(lport); 1201 } else { 1202 lport->boot_time = jiffies; 1203 fc_fabric_login(lport); 1204 fc_vport_setlink(lport); 1205 } 1206 return 0; 1207 } 1208 1209 1210 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) 1211 { 1212 struct net_device *netdev = interface->netdev; 1213 struct net_device *physdev = interface->hba->phys_dev; 1214 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1215 struct netdev_hw_addr *ha; 1216 int sel_san_mac = 0; 1217 1218 /* setup Source MAC Address */ 1219 rcu_read_lock(); 1220 for_each_dev_addr(physdev, ha) { 1221 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", 1222 ha->type); 1223 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], 1224 ha->addr[1], ha->addr[2], ha->addr[3], 1225 ha->addr[4], ha->addr[5]); 1226 1227 if ((ha->type == NETDEV_HW_ADDR_T_SAN) && 1228 (is_valid_ether_addr(ha->addr))) { 1229 memcpy(ctlr->ctl_src_addr, ha->addr, 1230 ETH_ALEN); 1231 sel_san_mac = 1; 1232 BNX2FC_MISC_DBG("Found SAN MAC\n"); 1233 } 1234 } 1235 rcu_read_unlock(); 1236 1237 if (!sel_san_mac) 1238 return -ENODEV; 1239 1240 interface->fip_packet_type.func = bnx2fc_fip_recv; 1241 interface->fip_packet_type.type = htons(ETH_P_FIP); 1242 interface->fip_packet_type.dev = netdev; 1243 dev_add_pack(&interface->fip_packet_type); 1244 1245 interface->fcoe_packet_type.func = bnx2fc_rcv; 1246 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); 1247 interface->fcoe_packet_type.dev = netdev; 1248 dev_add_pack(&interface->fcoe_packet_type); 1249 1250 return 0; 1251 } 1252 1253 static int bnx2fc_attach_transport(void) 1254 { 1255 bnx2fc_transport_template = 1256 fc_attach_transport(&bnx2fc_transport_function); 1257 1258 if (bnx2fc_transport_template == NULL) { 1259 printk(KERN_ERR PFX "Failed to attach FC transport\n"); 1260 return -ENODEV; 1261 } 1262 1263 bnx2fc_vport_xport_template = 1264 fc_attach_transport(&bnx2fc_vport_xport_function); 1265 if (bnx2fc_vport_xport_template == NULL) { 1266 printk(KERN_ERR PFX 1267 "Failed to attach FC transport for vport\n"); 1268 fc_release_transport(bnx2fc_transport_template); 1269 bnx2fc_transport_template = NULL; 1270 return -ENODEV; 1271 } 1272 return 0; 1273 } 1274 static void bnx2fc_release_transport(void) 1275 { 1276 fc_release_transport(bnx2fc_transport_template); 1277 fc_release_transport(bnx2fc_vport_xport_template); 1278 bnx2fc_transport_template = NULL; 1279 bnx2fc_vport_xport_template = NULL; 1280 } 1281 1282 static void bnx2fc_interface_release(struct kref *kref) 1283 { 1284 struct fcoe_ctlr_device *ctlr_dev; 1285 struct bnx2fc_interface *interface; 1286 struct fcoe_ctlr *ctlr; 1287 struct net_device *netdev; 1288 1289 interface = container_of(kref, struct bnx2fc_interface, kref); 1290 BNX2FC_MISC_DBG("Interface is being released\n"); 1291 1292 ctlr = bnx2fc_to_ctlr(interface); 1293 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); 1294 netdev = interface->netdev; 1295 1296 /* tear-down FIP controller */ 1297 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) 1298 fcoe_ctlr_destroy(ctlr); 1299 1300 fcoe_ctlr_device_delete(ctlr_dev); 1301 1302 dev_put(netdev); 1303 module_put(THIS_MODULE); 1304 } 1305 1306 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) 1307 { 1308 kref_get(&interface->kref); 1309 } 1310 1311 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) 1312 { 1313 kref_put(&interface->kref, bnx2fc_interface_release); 1314 } 1315 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) 1316 { 1317 /* Free the command manager */ 1318 if (hba->cmd_mgr) { 1319 bnx2fc_cmd_mgr_free(hba->cmd_mgr); 1320 hba->cmd_mgr = NULL; 1321 } 1322 kfree(hba->tgt_ofld_list); 1323 bnx2fc_unbind_pcidev(hba); 1324 kfree(hba); 1325 } 1326 1327 /** 1328 * bnx2fc_hba_create - create a new bnx2fc hba 1329 * 1330 * @cnic: pointer to cnic device 1331 * 1332 * Creates a new FCoE hba on the given device. 1333 * 1334 */ 1335 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) 1336 { 1337 struct bnx2fc_hba *hba; 1338 struct fcoe_capabilities *fcoe_cap; 1339 int rc; 1340 1341 hba = kzalloc(sizeof(*hba), GFP_KERNEL); 1342 if (!hba) { 1343 printk(KERN_ERR PFX "Unable to allocate hba structure\n"); 1344 return NULL; 1345 } 1346 spin_lock_init(&hba->hba_lock); 1347 mutex_init(&hba->hba_mutex); 1348 mutex_init(&hba->hba_stats_mutex); 1349 1350 hba->cnic = cnic; 1351 1352 hba->max_tasks = cnic->max_fcoe_exchanges; 1353 hba->elstm_xids = (hba->max_tasks / 2); 1354 hba->max_outstanding_cmds = hba->elstm_xids; 1355 hba->max_xid = (hba->max_tasks - 1); 1356 1357 rc = bnx2fc_bind_pcidev(hba); 1358 if (rc) { 1359 printk(KERN_ERR PFX "create_adapter: bind error\n"); 1360 goto bind_err; 1361 } 1362 hba->phys_dev = cnic->netdev; 1363 hba->next_conn_id = 0; 1364 1365 hba->tgt_ofld_list = 1366 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS, 1367 GFP_KERNEL); 1368 if (!hba->tgt_ofld_list) { 1369 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); 1370 goto tgtofld_err; 1371 } 1372 1373 hba->num_ofld_sess = 0; 1374 1375 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba); 1376 if (!hba->cmd_mgr) { 1377 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); 1378 goto cmgr_err; 1379 } 1380 fcoe_cap = &hba->fcoe_cap; 1381 1382 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << 1383 FCOE_IOS_PER_CONNECTION_SHIFT; 1384 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << 1385 FCOE_LOGINS_PER_PORT_SHIFT; 1386 fcoe_cap->capability2 = hba->max_outstanding_cmds << 1387 FCOE_NUMBER_OF_EXCHANGES_SHIFT; 1388 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << 1389 FCOE_NPIV_WWN_PER_PORT_SHIFT; 1390 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << 1391 FCOE_TARGETS_SUPPORTED_SHIFT; 1392 fcoe_cap->capability3 |= hba->max_outstanding_cmds << 1393 FCOE_OUTSTANDING_COMMANDS_SHIFT; 1394 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; 1395 1396 init_waitqueue_head(&hba->shutdown_wait); 1397 init_waitqueue_head(&hba->destroy_wait); 1398 INIT_LIST_HEAD(&hba->vports); 1399 1400 return hba; 1401 1402 cmgr_err: 1403 kfree(hba->tgt_ofld_list); 1404 tgtofld_err: 1405 bnx2fc_unbind_pcidev(hba); 1406 bind_err: 1407 kfree(hba); 1408 return NULL; 1409 } 1410 1411 static struct bnx2fc_interface * 1412 bnx2fc_interface_create(struct bnx2fc_hba *hba, 1413 struct net_device *netdev, 1414 enum fip_state fip_mode) 1415 { 1416 struct fcoe_ctlr_device *ctlr_dev; 1417 struct bnx2fc_interface *interface; 1418 struct fcoe_ctlr *ctlr; 1419 int size; 1420 int rc = 0; 1421 1422 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); 1423 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, 1424 size); 1425 if (!ctlr_dev) { 1426 printk(KERN_ERR PFX "Unable to allocate interface structure\n"); 1427 return NULL; 1428 } 1429 ctlr = fcoe_ctlr_device_priv(ctlr_dev); 1430 ctlr->cdev = ctlr_dev; 1431 interface = fcoe_ctlr_priv(ctlr); 1432 dev_hold(netdev); 1433 kref_init(&interface->kref); 1434 interface->hba = hba; 1435 interface->netdev = netdev; 1436 1437 /* Initialize FIP */ 1438 fcoe_ctlr_init(ctlr, fip_mode); 1439 ctlr->send = bnx2fc_fip_send; 1440 ctlr->update_mac = bnx2fc_update_src_mac; 1441 ctlr->get_src_addr = bnx2fc_get_src_mac; 1442 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); 1443 1444 rc = bnx2fc_interface_setup(interface); 1445 if (!rc) 1446 return interface; 1447 1448 fcoe_ctlr_destroy(ctlr); 1449 dev_put(netdev); 1450 fcoe_ctlr_device_delete(ctlr_dev); 1451 return NULL; 1452 } 1453 1454 /** 1455 * bnx2fc_if_create - Create FCoE instance on a given interface 1456 * 1457 * @interface: FCoE interface to create a local port on 1458 * @parent: Device pointer to be the parent in sysfs for the SCSI host 1459 * @npiv: Indicates if the port is vport or not 1460 * 1461 * Creates a fc_lport instance and a Scsi_Host instance and configure them. 1462 * 1463 * Returns: Allocated fc_lport or an error pointer 1464 */ 1465 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 1466 struct device *parent, int npiv) 1467 { 1468 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1469 struct fc_lport *lport, *n_port; 1470 struct fcoe_port *port; 1471 struct Scsi_Host *shost; 1472 struct fc_vport *vport = dev_to_vport(parent); 1473 struct bnx2fc_lport *blport; 1474 struct bnx2fc_hba *hba = interface->hba; 1475 int rc = 0; 1476 1477 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); 1478 if (!blport) { 1479 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); 1480 return NULL; 1481 } 1482 1483 /* Allocate Scsi_Host structure */ 1484 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds; 1485 if (!npiv) 1486 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); 1487 else 1488 lport = libfc_vport_create(vport, sizeof(*port)); 1489 1490 if (!lport) { 1491 printk(KERN_ERR PFX "could not allocate scsi host structure\n"); 1492 goto free_blport; 1493 } 1494 shost = lport->host; 1495 port = lport_priv(lport); 1496 port->lport = lport; 1497 port->priv = interface; 1498 port->get_netdev = bnx2fc_netdev; 1499 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work); 1500 1501 /* Configure fcoe_port */ 1502 rc = bnx2fc_lport_config(lport); 1503 if (rc) 1504 goto lp_config_err; 1505 1506 if (npiv) { 1507 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", 1508 vport->node_name, vport->port_name); 1509 fc_set_wwnn(lport, vport->node_name); 1510 fc_set_wwpn(lport, vport->port_name); 1511 } 1512 /* Configure netdev and networking properties of the lport */ 1513 rc = bnx2fc_net_config(lport, interface->netdev); 1514 if (rc) { 1515 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); 1516 goto lp_config_err; 1517 } 1518 1519 rc = bnx2fc_shost_config(lport, parent); 1520 if (rc) { 1521 printk(KERN_ERR PFX "Couldnt configure shost for %s\n", 1522 interface->netdev->name); 1523 goto lp_config_err; 1524 } 1525 1526 /* Initialize the libfc library */ 1527 rc = bnx2fc_libfc_config(lport); 1528 if (rc) { 1529 printk(KERN_ERR PFX "Couldnt configure libfc\n"); 1530 goto shost_err; 1531 } 1532 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1533 1534 if (bnx2fc_devloss_tmo) 1535 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo; 1536 1537 /* Allocate exchange manager */ 1538 if (!npiv) 1539 rc = bnx2fc_em_config(lport, hba); 1540 else { 1541 shost = vport_to_shost(vport); 1542 n_port = shost_priv(shost); 1543 rc = fc_exch_mgr_list_clone(n_port, lport); 1544 } 1545 1546 if (rc) { 1547 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); 1548 goto shost_err; 1549 } 1550 1551 bnx2fc_interface_get(interface); 1552 1553 spin_lock_bh(&hba->hba_lock); 1554 blport->lport = lport; 1555 list_add_tail(&blport->list, &hba->vports); 1556 spin_unlock_bh(&hba->hba_lock); 1557 1558 return lport; 1559 1560 shost_err: 1561 scsi_remove_host(shost); 1562 lp_config_err: 1563 scsi_host_put(lport->host); 1564 free_blport: 1565 kfree(blport); 1566 return NULL; 1567 } 1568 1569 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) 1570 { 1571 /* Dont listen for Ethernet packets anymore */ 1572 __dev_remove_pack(&interface->fcoe_packet_type); 1573 __dev_remove_pack(&interface->fip_packet_type); 1574 synchronize_net(); 1575 } 1576 1577 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) 1578 { 1579 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1580 struct fc_lport *lport = ctlr->lp; 1581 struct fcoe_port *port = lport_priv(lport); 1582 struct bnx2fc_hba *hba = interface->hba; 1583 1584 /* Stop the transmit retry timer */ 1585 del_timer_sync(&port->timer); 1586 1587 /* Free existing transmit skbs */ 1588 fcoe_clean_pending_queue(lport); 1589 1590 bnx2fc_net_cleanup(interface); 1591 1592 bnx2fc_free_vport(hba, lport); 1593 } 1594 1595 static void bnx2fc_if_destroy(struct fc_lport *lport) 1596 { 1597 1598 /* Free queued packets for the receive thread */ 1599 bnx2fc_clean_rx_queue(lport); 1600 1601 /* Detach from scsi-ml */ 1602 fc_remove_host(lport->host); 1603 scsi_remove_host(lport->host); 1604 1605 /* 1606 * Note that only the physical lport will have the exchange manager. 1607 * for vports, this function is NOP 1608 */ 1609 fc_exch_mgr_free(lport); 1610 1611 /* Free memory used by statistical counters */ 1612 fc_lport_free_stats(lport); 1613 1614 /* Release Scsi_Host */ 1615 scsi_host_put(lport->host); 1616 } 1617 1618 static void __bnx2fc_destroy(struct bnx2fc_interface *interface) 1619 { 1620 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1621 struct fc_lport *lport = ctlr->lp; 1622 struct fcoe_port *port = lport_priv(lport); 1623 1624 bnx2fc_interface_cleanup(interface); 1625 bnx2fc_stop(interface); 1626 list_del(&interface->list); 1627 bnx2fc_interface_put(interface); 1628 queue_work(bnx2fc_wq, &port->destroy_work); 1629 } 1630 1631 /** 1632 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface 1633 * 1634 * @buffer: The name of the Ethernet interface to be destroyed 1635 * @kp: The associated kernel parameter 1636 * 1637 * Called from sysfs. 1638 * 1639 * Returns: 0 for success 1640 */ 1641 static int bnx2fc_destroy(struct net_device *netdev) 1642 { 1643 struct bnx2fc_interface *interface = NULL; 1644 struct workqueue_struct *timer_work_queue; 1645 struct fcoe_ctlr *ctlr; 1646 int rc = 0; 1647 1648 rtnl_lock(); 1649 mutex_lock(&bnx2fc_dev_lock); 1650 1651 interface = bnx2fc_interface_lookup(netdev); 1652 ctlr = bnx2fc_to_ctlr(interface); 1653 if (!interface || !ctlr->lp) { 1654 rc = -ENODEV; 1655 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); 1656 goto netdev_err; 1657 } 1658 1659 timer_work_queue = interface->timer_work_queue; 1660 __bnx2fc_destroy(interface); 1661 destroy_workqueue(timer_work_queue); 1662 1663 netdev_err: 1664 mutex_unlock(&bnx2fc_dev_lock); 1665 rtnl_unlock(); 1666 return rc; 1667 } 1668 1669 static void bnx2fc_destroy_work(struct work_struct *work) 1670 { 1671 struct fcoe_port *port; 1672 struct fc_lport *lport; 1673 1674 port = container_of(work, struct fcoe_port, destroy_work); 1675 lport = port->lport; 1676 1677 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n"); 1678 1679 bnx2fc_if_destroy(lport); 1680 } 1681 1682 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) 1683 { 1684 bnx2fc_free_fw_resc(hba); 1685 bnx2fc_free_task_ctx(hba); 1686 } 1687 1688 /** 1689 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated 1690 * pci structure 1691 * 1692 * @hba: Adapter instance 1693 */ 1694 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) 1695 { 1696 if (bnx2fc_setup_task_ctx(hba)) 1697 goto mem_err; 1698 1699 if (bnx2fc_setup_fw_resc(hba)) 1700 goto mem_err; 1701 1702 return 0; 1703 mem_err: 1704 bnx2fc_unbind_adapter_devices(hba); 1705 return -ENOMEM; 1706 } 1707 1708 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) 1709 { 1710 struct cnic_dev *cnic; 1711 struct pci_dev *pdev; 1712 1713 if (!hba->cnic) { 1714 printk(KERN_ERR PFX "cnic is NULL\n"); 1715 return -ENODEV; 1716 } 1717 cnic = hba->cnic; 1718 pdev = hba->pcidev = cnic->pcidev; 1719 if (!hba->pcidev) 1720 return -ENODEV; 1721 1722 switch (pdev->device) { 1723 case PCI_DEVICE_ID_NX2_57710: 1724 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN); 1725 break; 1726 case PCI_DEVICE_ID_NX2_57711: 1727 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN); 1728 break; 1729 case PCI_DEVICE_ID_NX2_57712: 1730 case PCI_DEVICE_ID_NX2_57712_MF: 1731 case PCI_DEVICE_ID_NX2_57712_VF: 1732 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN); 1733 break; 1734 case PCI_DEVICE_ID_NX2_57800: 1735 case PCI_DEVICE_ID_NX2_57800_MF: 1736 case PCI_DEVICE_ID_NX2_57800_VF: 1737 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN); 1738 break; 1739 case PCI_DEVICE_ID_NX2_57810: 1740 case PCI_DEVICE_ID_NX2_57810_MF: 1741 case PCI_DEVICE_ID_NX2_57810_VF: 1742 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN); 1743 break; 1744 case PCI_DEVICE_ID_NX2_57840: 1745 case PCI_DEVICE_ID_NX2_57840_MF: 1746 case PCI_DEVICE_ID_NX2_57840_VF: 1747 case PCI_DEVICE_ID_NX2_57840_2_20: 1748 case PCI_DEVICE_ID_NX2_57840_4_10: 1749 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN); 1750 break; 1751 default: 1752 pr_err(PFX "Unknown device id 0x%x\n", pdev->device); 1753 break; 1754 } 1755 pci_dev_get(hba->pcidev); 1756 return 0; 1757 } 1758 1759 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) 1760 { 1761 if (hba->pcidev) { 1762 hba->chip_num[0] = '\0'; 1763 pci_dev_put(hba->pcidev); 1764 } 1765 hba->pcidev = NULL; 1766 } 1767 1768 /** 1769 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats 1770 * 1771 * @handle: transport handle pointing to adapter struture 1772 */ 1773 static int bnx2fc_ulp_get_stats(void *handle) 1774 { 1775 struct bnx2fc_hba *hba = handle; 1776 struct cnic_dev *cnic; 1777 struct fcoe_stats_info *stats_addr; 1778 1779 if (!hba) 1780 return -EINVAL; 1781 1782 cnic = hba->cnic; 1783 stats_addr = &cnic->stats_addr->fcoe_stat; 1784 if (!stats_addr) 1785 return -EINVAL; 1786 1787 strncpy(stats_addr->version, BNX2FC_VERSION, 1788 sizeof(stats_addr->version)); 1789 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX; 1790 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX; 1791 1792 return 0; 1793 } 1794 1795 1796 /** 1797 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance 1798 * 1799 * @handle: transport handle pointing to adapter structure 1800 * 1801 * This function maps adapter structure to pcidev structure and initiates 1802 * firmware handshake to enable/initialize on-chip FCoE components. 1803 * This bnx2fc - cnic interface api callback is used after following 1804 * conditions are met - 1805 * a) underlying network interface is up (marked by event NETDEV_UP 1806 * from netdev 1807 * b) bnx2fc adatper structure is registered. 1808 */ 1809 static void bnx2fc_ulp_start(void *handle) 1810 { 1811 struct bnx2fc_hba *hba = handle; 1812 struct bnx2fc_interface *interface; 1813 struct fcoe_ctlr *ctlr; 1814 struct fc_lport *lport; 1815 1816 mutex_lock(&bnx2fc_dev_lock); 1817 1818 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1819 bnx2fc_fw_init(hba); 1820 1821 BNX2FC_MISC_DBG("bnx2fc started.\n"); 1822 1823 list_for_each_entry(interface, &if_list, list) { 1824 if (interface->hba == hba) { 1825 ctlr = bnx2fc_to_ctlr(interface); 1826 lport = ctlr->lp; 1827 /* Kick off Fabric discovery*/ 1828 printk(KERN_ERR PFX "ulp_init: start discovery\n"); 1829 lport->tt.frame_send = bnx2fc_xmit; 1830 bnx2fc_start_disc(interface); 1831 } 1832 } 1833 1834 mutex_unlock(&bnx2fc_dev_lock); 1835 } 1836 1837 static void bnx2fc_port_shutdown(struct fc_lport *lport) 1838 { 1839 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1840 fc_fabric_logoff(lport); 1841 fc_lport_destroy(lport); 1842 } 1843 1844 static void bnx2fc_stop(struct bnx2fc_interface *interface) 1845 { 1846 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1847 struct fc_lport *lport; 1848 struct fc_lport *vport; 1849 1850 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) 1851 return; 1852 1853 lport = ctlr->lp; 1854 bnx2fc_port_shutdown(lport); 1855 1856 mutex_lock(&lport->lp_mutex); 1857 list_for_each_entry(vport, &lport->vports, list) 1858 fc_host_port_type(vport->host) = 1859 FC_PORTTYPE_UNKNOWN; 1860 mutex_unlock(&lport->lp_mutex); 1861 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1862 fcoe_ctlr_link_down(ctlr); 1863 fcoe_clean_pending_queue(lport); 1864 } 1865 1866 static int bnx2fc_fw_init(struct bnx2fc_hba *hba) 1867 { 1868 #define BNX2FC_INIT_POLL_TIME (1000 / HZ) 1869 int rc = -1; 1870 int i = HZ; 1871 1872 rc = bnx2fc_bind_adapter_devices(hba); 1873 if (rc) { 1874 printk(KERN_ALERT PFX 1875 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); 1876 goto err_out; 1877 } 1878 1879 rc = bnx2fc_send_fw_fcoe_init_msg(hba); 1880 if (rc) { 1881 printk(KERN_ALERT PFX 1882 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); 1883 goto err_unbind; 1884 } 1885 1886 /* 1887 * Wait until the adapter init message is complete, and adapter 1888 * state is UP. 1889 */ 1890 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) 1891 msleep(BNX2FC_INIT_POLL_TIME); 1892 1893 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { 1894 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " 1895 "Ignoring...\n", 1896 hba->cnic->netdev->name); 1897 rc = -1; 1898 goto err_unbind; 1899 } 1900 1901 1902 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); 1903 return 0; 1904 1905 err_unbind: 1906 bnx2fc_unbind_adapter_devices(hba); 1907 err_out: 1908 return rc; 1909 } 1910 1911 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) 1912 { 1913 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { 1914 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { 1915 init_timer(&hba->destroy_timer); 1916 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + 1917 jiffies; 1918 hba->destroy_timer.function = bnx2fc_destroy_timer; 1919 hba->destroy_timer.data = (unsigned long)hba; 1920 add_timer(&hba->destroy_timer); 1921 wait_event_interruptible(hba->destroy_wait, 1922 test_bit(BNX2FC_FLAG_DESTROY_CMPL, 1923 &hba->flags)); 1924 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 1925 /* This should never happen */ 1926 if (signal_pending(current)) 1927 flush_signals(current); 1928 1929 del_timer_sync(&hba->destroy_timer); 1930 } 1931 bnx2fc_unbind_adapter_devices(hba); 1932 } 1933 } 1934 1935 /** 1936 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance 1937 * 1938 * @handle: transport handle pointing to adapter structure 1939 * 1940 * Driver checks if adapter is already in shutdown mode, if not start 1941 * the shutdown process. 1942 */ 1943 static void bnx2fc_ulp_stop(void *handle) 1944 { 1945 struct bnx2fc_hba *hba = handle; 1946 struct bnx2fc_interface *interface; 1947 1948 printk(KERN_ERR "ULP_STOP\n"); 1949 1950 mutex_lock(&bnx2fc_dev_lock); 1951 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1952 goto exit; 1953 list_for_each_entry(interface, &if_list, list) { 1954 if (interface->hba == hba) 1955 bnx2fc_stop(interface); 1956 } 1957 BUG_ON(hba->num_ofld_sess != 0); 1958 1959 mutex_lock(&hba->hba_mutex); 1960 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 1961 clear_bit(ADAPTER_STATE_GOING_DOWN, 1962 &hba->adapter_state); 1963 1964 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 1965 mutex_unlock(&hba->hba_mutex); 1966 1967 bnx2fc_fw_destroy(hba); 1968 exit: 1969 mutex_unlock(&bnx2fc_dev_lock); 1970 } 1971 1972 static void bnx2fc_start_disc(struct bnx2fc_interface *interface) 1973 { 1974 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1975 struct fc_lport *lport; 1976 int wait_cnt = 0; 1977 1978 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1979 /* Kick off FIP/FLOGI */ 1980 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1981 printk(KERN_ERR PFX "Init not done yet\n"); 1982 return; 1983 } 1984 1985 lport = ctlr->lp; 1986 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); 1987 1988 if (!bnx2fc_link_ok(lport) && interface->enabled) { 1989 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); 1990 fcoe_ctlr_link_up(ctlr); 1991 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 1992 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 1993 } 1994 1995 /* wait for the FCF to be selected before issuing FLOGI */ 1996 while (!ctlr->sel_fcf) { 1997 msleep(250); 1998 /* give up after 3 secs */ 1999 if (++wait_cnt > 12) 2000 break; 2001 } 2002 2003 /* Reset max receive frame size to default */ 2004 if (fc_set_mfs(lport, BNX2FC_MFS)) 2005 return; 2006 2007 fc_lport_init(lport); 2008 fc_fabric_login(lport); 2009 } 2010 2011 2012 /** 2013 * bnx2fc_ulp_init - Initialize an adapter instance 2014 * 2015 * @dev : cnic device handle 2016 * Called from cnic_register_driver() context to initialize all 2017 * enumerated cnic devices. This routine allocates adapter structure 2018 * and other device specific resources. 2019 */ 2020 static void bnx2fc_ulp_init(struct cnic_dev *dev) 2021 { 2022 struct bnx2fc_hba *hba; 2023 int rc = 0; 2024 2025 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2026 /* bnx2fc works only when bnx2x is loaded */ 2027 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || 2028 (dev->max_fcoe_conn == 0)) { 2029 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," 2030 " flags: %lx fcoe_conn: %d\n", 2031 dev->netdev->name, dev->flags, dev->max_fcoe_conn); 2032 return; 2033 } 2034 2035 hba = bnx2fc_hba_create(dev); 2036 if (!hba) { 2037 printk(KERN_ERR PFX "hba initialization failed\n"); 2038 return; 2039 } 2040 2041 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name); 2042 2043 /* Add HBA to the adapter list */ 2044 mutex_lock(&bnx2fc_dev_lock); 2045 list_add_tail(&hba->list, &adapter_list); 2046 adapter_count++; 2047 mutex_unlock(&bnx2fc_dev_lock); 2048 2049 dev->fcoe_cap = &hba->fcoe_cap; 2050 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2051 rc = dev->register_device(dev, CNIC_ULP_FCOE, 2052 (void *) hba); 2053 if (rc) 2054 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); 2055 else 2056 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2057 } 2058 2059 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */ 2060 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr) 2061 { 2062 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2063 2064 if (interface->enabled == true) { 2065 if (!ctlr->lp) { 2066 pr_err(PFX "__bnx2fc_disable: lport not found\n"); 2067 return -ENODEV; 2068 } else { 2069 interface->enabled = false; 2070 fcoe_ctlr_link_down(ctlr); 2071 fcoe_clean_pending_queue(ctlr->lp); 2072 } 2073 } 2074 return 0; 2075 } 2076 2077 /** 2078 * Deperecated: Use bnx2fc_enabled() 2079 */ 2080 static int bnx2fc_disable(struct net_device *netdev) 2081 { 2082 struct bnx2fc_interface *interface; 2083 struct fcoe_ctlr *ctlr; 2084 int rc = 0; 2085 2086 rtnl_lock(); 2087 mutex_lock(&bnx2fc_dev_lock); 2088 2089 interface = bnx2fc_interface_lookup(netdev); 2090 ctlr = bnx2fc_to_ctlr(interface); 2091 2092 if (!interface) { 2093 rc = -ENODEV; 2094 pr_err(PFX "bnx2fc_disable: interface not found\n"); 2095 } else { 2096 rc = __bnx2fc_disable(ctlr); 2097 } 2098 mutex_unlock(&bnx2fc_dev_lock); 2099 rtnl_unlock(); 2100 return rc; 2101 } 2102 2103 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport, 2104 struct cnic_fc_npiv_tbl *npiv_tbl) 2105 { 2106 struct fc_vport_identifiers vpid; 2107 uint i, created = 0; 2108 2109 if (npiv_tbl->count > MAX_NPIV_ENTRIES) { 2110 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n"); 2111 goto done; 2112 } 2113 2114 /* Sanity check the first entry to make sure it's not 0 */ 2115 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 && 2116 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) { 2117 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n"); 2118 goto done; 2119 } 2120 2121 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR; 2122 vpid.vport_type = FC_PORTTYPE_NPIV; 2123 vpid.disable = false; 2124 2125 for (i = 0; i < npiv_tbl->count; i++) { 2126 vpid.node_name = wwn_to_u64(npiv_tbl->wwnn[i]); 2127 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]); 2128 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name), 2129 "NPIV[%u]:%016llx-%016llx", 2130 created, vpid.port_name, vpid.node_name); 2131 if (fc_vport_create(lport->host, 0, &vpid)) 2132 created++; 2133 else 2134 BNX2FC_HBA_DBG(lport, "Failed to create vport\n"); 2135 } 2136 done: 2137 return created; 2138 } 2139 2140 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr) 2141 { 2142 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2143 struct bnx2fc_hba *hba; 2144 struct cnic_fc_npiv_tbl *npiv_tbl; 2145 struct fc_lport *lport; 2146 2147 if (interface->enabled == false) { 2148 if (!ctlr->lp) { 2149 pr_err(PFX "__bnx2fc_enable: lport not found\n"); 2150 return -ENODEV; 2151 } else if (!bnx2fc_link_ok(ctlr->lp)) { 2152 fcoe_ctlr_link_up(ctlr); 2153 interface->enabled = true; 2154 } 2155 } 2156 2157 /* Create static NPIV ports if any are contained in NVRAM */ 2158 hba = interface->hba; 2159 lport = ctlr->lp; 2160 2161 if (!hba) 2162 goto done; 2163 2164 if (!hba->cnic) 2165 goto done; 2166 2167 if (!lport) 2168 goto done; 2169 2170 if (!lport->host) 2171 goto done; 2172 2173 if (!hba->cnic->get_fc_npiv_tbl) 2174 goto done; 2175 2176 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL); 2177 if (!npiv_tbl) 2178 goto done; 2179 2180 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl)) 2181 goto done_free; 2182 2183 bnx2fc_npiv_create_vports(lport, npiv_tbl); 2184 done_free: 2185 kfree(npiv_tbl); 2186 done: 2187 return 0; 2188 } 2189 2190 /** 2191 * Deprecated: Use bnx2fc_enabled() 2192 */ 2193 static int bnx2fc_enable(struct net_device *netdev) 2194 { 2195 struct bnx2fc_interface *interface; 2196 struct fcoe_ctlr *ctlr; 2197 int rc = 0; 2198 2199 rtnl_lock(); 2200 mutex_lock(&bnx2fc_dev_lock); 2201 2202 interface = bnx2fc_interface_lookup(netdev); 2203 ctlr = bnx2fc_to_ctlr(interface); 2204 if (!interface) { 2205 rc = -ENODEV; 2206 pr_err(PFX "bnx2fc_enable: interface not found\n"); 2207 } else { 2208 rc = __bnx2fc_enable(ctlr); 2209 } 2210 2211 mutex_unlock(&bnx2fc_dev_lock); 2212 rtnl_unlock(); 2213 return rc; 2214 } 2215 2216 /** 2217 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller 2218 * @cdev: The FCoE Controller that is being enabled or disabled 2219 * 2220 * fcoe_sysfs will ensure that the state of 'enabled' has 2221 * changed, so no checking is necessary here. This routine simply 2222 * calls fcoe_enable or fcoe_disable, both of which are deprecated. 2223 * When those routines are removed the functionality can be merged 2224 * here. 2225 */ 2226 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev) 2227 { 2228 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); 2229 2230 switch (cdev->enabled) { 2231 case FCOE_CTLR_ENABLED: 2232 return __bnx2fc_enable(ctlr); 2233 case FCOE_CTLR_DISABLED: 2234 return __bnx2fc_disable(ctlr); 2235 case FCOE_CTLR_UNUSED: 2236 default: 2237 return -ENOTSUPP; 2238 }; 2239 } 2240 2241 enum bnx2fc_create_link_state { 2242 BNX2FC_CREATE_LINK_DOWN, 2243 BNX2FC_CREATE_LINK_UP, 2244 }; 2245 2246 /** 2247 * _bnx2fc_create() - Create bnx2fc FCoE interface 2248 * @netdev : The net_device object the Ethernet interface to create on 2249 * @fip_mode: The FIP mode for this creation 2250 * @link_state: The ctlr link state on creation 2251 * 2252 * Called from either the libfcoe 'create' module parameter 2253 * via fcoe_create or from fcoe_syfs's ctlr_create file. 2254 * 2255 * libfcoe's 'create' module parameter is deprecated so some 2256 * consolidation of code can be done when that interface is 2257 * removed. 2258 * 2259 * Returns: 0 for success 2260 */ 2261 static int _bnx2fc_create(struct net_device *netdev, 2262 enum fip_mode fip_mode, 2263 enum bnx2fc_create_link_state link_state) 2264 { 2265 struct fcoe_ctlr_device *cdev; 2266 struct fcoe_ctlr *ctlr; 2267 struct bnx2fc_interface *interface; 2268 struct bnx2fc_hba *hba; 2269 struct net_device *phys_dev = netdev; 2270 struct fc_lport *lport; 2271 struct ethtool_drvinfo drvinfo; 2272 int rc = 0; 2273 int vlan_id = 0; 2274 2275 BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); 2276 if (fip_mode != FIP_MODE_FABRIC) { 2277 printk(KERN_ERR "fip mode not FABRIC\n"); 2278 return -EIO; 2279 } 2280 2281 rtnl_lock(); 2282 2283 mutex_lock(&bnx2fc_dev_lock); 2284 2285 if (!try_module_get(THIS_MODULE)) { 2286 rc = -EINVAL; 2287 goto mod_err; 2288 } 2289 2290 /* obtain physical netdev */ 2291 if (is_vlan_dev(netdev)) 2292 phys_dev = vlan_dev_real_dev(netdev); 2293 2294 /* verify if the physical device is a netxtreme2 device */ 2295 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { 2296 memset(&drvinfo, 0, sizeof(drvinfo)); 2297 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); 2298 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { 2299 printk(KERN_ERR PFX "Not a netxtreme2 device\n"); 2300 rc = -EINVAL; 2301 goto netdev_err; 2302 } 2303 } else { 2304 printk(KERN_ERR PFX "unable to obtain drv_info\n"); 2305 rc = -EINVAL; 2306 goto netdev_err; 2307 } 2308 2309 /* obtain interface and initialize rest of the structure */ 2310 hba = bnx2fc_hba_lookup(phys_dev); 2311 if (!hba) { 2312 rc = -ENODEV; 2313 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); 2314 goto netdev_err; 2315 } 2316 2317 if (bnx2fc_interface_lookup(netdev)) { 2318 rc = -EEXIST; 2319 goto netdev_err; 2320 } 2321 2322 interface = bnx2fc_interface_create(hba, netdev, fip_mode); 2323 if (!interface) { 2324 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); 2325 rc = -ENOMEM; 2326 goto ifput_err; 2327 } 2328 2329 if (is_vlan_dev(netdev)) { 2330 vlan_id = vlan_dev_vlan_id(netdev); 2331 interface->vlan_enabled = 1; 2332 } 2333 2334 ctlr = bnx2fc_to_ctlr(interface); 2335 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 2336 interface->vlan_id = vlan_id; 2337 interface->tm_timeout = BNX2FC_TM_TIMEOUT; 2338 2339 interface->timer_work_queue = 2340 create_singlethread_workqueue("bnx2fc_timer_wq"); 2341 if (!interface->timer_work_queue) { 2342 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); 2343 rc = -EINVAL; 2344 goto ifput_err; 2345 } 2346 2347 lport = bnx2fc_if_create(interface, &cdev->dev, 0); 2348 if (!lport) { 2349 printk(KERN_ERR PFX "Failed to create interface (%s)\n", 2350 netdev->name); 2351 rc = -EINVAL; 2352 goto if_create_err; 2353 } 2354 2355 /* Add interface to if_list */ 2356 list_add_tail(&interface->list, &if_list); 2357 2358 lport->boot_time = jiffies; 2359 2360 /* Make this master N_port */ 2361 ctlr->lp = lport; 2362 2363 if (link_state == BNX2FC_CREATE_LINK_UP) 2364 cdev->enabled = FCOE_CTLR_ENABLED; 2365 else 2366 cdev->enabled = FCOE_CTLR_DISABLED; 2367 2368 if (link_state == BNX2FC_CREATE_LINK_UP && 2369 !bnx2fc_link_ok(lport)) { 2370 fcoe_ctlr_link_up(ctlr); 2371 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2372 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2373 } 2374 2375 BNX2FC_HBA_DBG(lport, "create: START DISC\n"); 2376 bnx2fc_start_disc(interface); 2377 2378 if (link_state == BNX2FC_CREATE_LINK_UP) 2379 interface->enabled = true; 2380 2381 /* 2382 * Release from kref_init in bnx2fc_interface_setup, on success 2383 * lport should be holding a reference taken in bnx2fc_if_create 2384 */ 2385 bnx2fc_interface_put(interface); 2386 /* put netdev that was held while calling dev_get_by_name */ 2387 mutex_unlock(&bnx2fc_dev_lock); 2388 rtnl_unlock(); 2389 return 0; 2390 2391 if_create_err: 2392 destroy_workqueue(interface->timer_work_queue); 2393 ifput_err: 2394 bnx2fc_net_cleanup(interface); 2395 bnx2fc_interface_put(interface); 2396 goto mod_err; 2397 netdev_err: 2398 module_put(THIS_MODULE); 2399 mod_err: 2400 mutex_unlock(&bnx2fc_dev_lock); 2401 rtnl_unlock(); 2402 return rc; 2403 } 2404 2405 /** 2406 * bnx2fc_create() - Create a bnx2fc interface 2407 * @netdev : The net_device object the Ethernet interface to create on 2408 * @fip_mode: The FIP mode for this creation 2409 * 2410 * Called from fcoe transport 2411 * 2412 * Returns: 0 for success 2413 */ 2414 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode) 2415 { 2416 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP); 2417 } 2418 2419 /** 2420 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs 2421 * @netdev: The net_device to be used by the allocated FCoE Controller 2422 * 2423 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr 2424 * in a link_down state. The allows the user an opportunity to configure 2425 * the FCoE Controller from sysfs before enabling the FCoE Controller. 2426 * 2427 * Creating in with this routine starts the FCoE Controller in Fabric 2428 * mode. The user can change to VN2VN or another mode before enabling. 2429 */ 2430 static int bnx2fc_ctlr_alloc(struct net_device *netdev) 2431 { 2432 return _bnx2fc_create(netdev, FIP_MODE_FABRIC, 2433 BNX2FC_CREATE_LINK_DOWN); 2434 } 2435 2436 /** 2437 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance 2438 * 2439 * @cnic: Pointer to cnic device instance 2440 * 2441 **/ 2442 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) 2443 { 2444 struct bnx2fc_hba *hba; 2445 2446 /* Called with bnx2fc_dev_lock held */ 2447 list_for_each_entry(hba, &adapter_list, list) { 2448 if (hba->cnic == cnic) 2449 return hba; 2450 } 2451 return NULL; 2452 } 2453 2454 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 2455 *netdev) 2456 { 2457 struct bnx2fc_interface *interface; 2458 2459 /* Called with bnx2fc_dev_lock held */ 2460 list_for_each_entry(interface, &if_list, list) { 2461 if (interface->netdev == netdev) 2462 return interface; 2463 } 2464 return NULL; 2465 } 2466 2467 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device 2468 *phys_dev) 2469 { 2470 struct bnx2fc_hba *hba; 2471 2472 /* Called with bnx2fc_dev_lock held */ 2473 list_for_each_entry(hba, &adapter_list, list) { 2474 if (hba->phys_dev == phys_dev) 2475 return hba; 2476 } 2477 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); 2478 return NULL; 2479 } 2480 2481 /** 2482 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources 2483 * 2484 * @dev cnic device handle 2485 */ 2486 static void bnx2fc_ulp_exit(struct cnic_dev *dev) 2487 { 2488 struct bnx2fc_hba *hba; 2489 struct bnx2fc_interface *interface, *tmp; 2490 2491 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); 2492 2493 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { 2494 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", 2495 dev->netdev->name, dev->flags); 2496 return; 2497 } 2498 2499 mutex_lock(&bnx2fc_dev_lock); 2500 hba = bnx2fc_find_hba_for_cnic(dev); 2501 if (!hba) { 2502 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", 2503 dev); 2504 mutex_unlock(&bnx2fc_dev_lock); 2505 return; 2506 } 2507 2508 list_del_init(&hba->list); 2509 adapter_count--; 2510 2511 list_for_each_entry_safe(interface, tmp, &if_list, list) 2512 /* destroy not called yet, move to quiesced list */ 2513 if (interface->hba == hba) 2514 __bnx2fc_destroy(interface); 2515 mutex_unlock(&bnx2fc_dev_lock); 2516 2517 /* Ensure ALL destroy work has been completed before return */ 2518 flush_workqueue(bnx2fc_wq); 2519 2520 bnx2fc_ulp_stop(hba); 2521 /* unregister cnic device */ 2522 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) 2523 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); 2524 bnx2fc_hba_destroy(hba); 2525 } 2526 2527 /** 2528 * bnx2fc_fcoe_reset - Resets the fcoe 2529 * 2530 * @shost: shost the reset is from 2531 * 2532 * Returns: always 0 2533 */ 2534 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) 2535 { 2536 struct fc_lport *lport = shost_priv(shost); 2537 fc_lport_reset(lport); 2538 return 0; 2539 } 2540 2541 2542 static bool bnx2fc_match(struct net_device *netdev) 2543 { 2544 struct net_device *phys_dev = netdev; 2545 2546 mutex_lock(&bnx2fc_dev_lock); 2547 if (is_vlan_dev(netdev)) 2548 phys_dev = vlan_dev_real_dev(netdev); 2549 2550 if (bnx2fc_hba_lookup(phys_dev)) { 2551 mutex_unlock(&bnx2fc_dev_lock); 2552 return true; 2553 } 2554 2555 mutex_unlock(&bnx2fc_dev_lock); 2556 return false; 2557 } 2558 2559 2560 static struct fcoe_transport bnx2fc_transport = { 2561 .name = {"bnx2fc"}, 2562 .attached = false, 2563 .list = LIST_HEAD_INIT(bnx2fc_transport.list), 2564 .alloc = bnx2fc_ctlr_alloc, 2565 .match = bnx2fc_match, 2566 .create = bnx2fc_create, 2567 .destroy = bnx2fc_destroy, 2568 .enable = bnx2fc_enable, 2569 .disable = bnx2fc_disable, 2570 }; 2571 2572 /** 2573 * bnx2fc_percpu_thread_create - Create a receive thread for an 2574 * online CPU 2575 * 2576 * @cpu: cpu index for the online cpu 2577 */ 2578 static void bnx2fc_percpu_thread_create(unsigned int cpu) 2579 { 2580 struct bnx2fc_percpu_s *p; 2581 struct task_struct *thread; 2582 2583 p = &per_cpu(bnx2fc_percpu, cpu); 2584 2585 thread = kthread_create_on_node(bnx2fc_percpu_io_thread, 2586 (void *)p, cpu_to_node(cpu), 2587 "bnx2fc_thread/%d", cpu); 2588 /* bind thread to the cpu */ 2589 if (likely(!IS_ERR(thread))) { 2590 kthread_bind(thread, cpu); 2591 p->iothread = thread; 2592 wake_up_process(thread); 2593 } 2594 } 2595 2596 static void bnx2fc_percpu_thread_destroy(unsigned int cpu) 2597 { 2598 struct bnx2fc_percpu_s *p; 2599 struct task_struct *thread; 2600 struct bnx2fc_work *work, *tmp; 2601 2602 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); 2603 2604 /* Prevent any new work from being queued for this CPU */ 2605 p = &per_cpu(bnx2fc_percpu, cpu); 2606 spin_lock_bh(&p->fp_work_lock); 2607 thread = p->iothread; 2608 p->iothread = NULL; 2609 2610 2611 /* Free all work in the list */ 2612 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 2613 list_del_init(&work->list); 2614 bnx2fc_process_cq_compl(work->tgt, work->wqe); 2615 kfree(work); 2616 } 2617 2618 spin_unlock_bh(&p->fp_work_lock); 2619 2620 if (thread) 2621 kthread_stop(thread); 2622 } 2623 2624 2625 static int bnx2fc_cpu_online(unsigned int cpu) 2626 { 2627 printk(PFX "CPU %x online: Create Rx thread\n", cpu); 2628 bnx2fc_percpu_thread_create(cpu); 2629 return 0; 2630 } 2631 2632 static int bnx2fc_cpu_dead(unsigned int cpu) 2633 { 2634 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu); 2635 bnx2fc_percpu_thread_destroy(cpu); 2636 return 0; 2637 } 2638 2639 static int bnx2fc_slave_configure(struct scsi_device *sdev) 2640 { 2641 if (!bnx2fc_queue_depth) 2642 return 0; 2643 2644 scsi_change_queue_depth(sdev, bnx2fc_queue_depth); 2645 return 0; 2646 } 2647 2648 static enum cpuhp_state bnx2fc_online_state; 2649 2650 /** 2651 * bnx2fc_mod_init - module init entry point 2652 * 2653 * Initialize driver wide global data structures, and register 2654 * with cnic module 2655 **/ 2656 static int __init bnx2fc_mod_init(void) 2657 { 2658 struct fcoe_percpu_s *bg; 2659 struct task_struct *l2_thread; 2660 int rc = 0; 2661 unsigned int cpu = 0; 2662 struct bnx2fc_percpu_s *p; 2663 2664 printk(KERN_INFO PFX "%s", version); 2665 2666 /* register as a fcoe transport */ 2667 rc = fcoe_transport_attach(&bnx2fc_transport); 2668 if (rc) { 2669 printk(KERN_ERR "failed to register an fcoe transport, check " 2670 "if libfcoe is loaded\n"); 2671 goto out; 2672 } 2673 2674 INIT_LIST_HEAD(&adapter_list); 2675 INIT_LIST_HEAD(&if_list); 2676 mutex_init(&bnx2fc_dev_lock); 2677 adapter_count = 0; 2678 2679 /* Attach FC transport template */ 2680 rc = bnx2fc_attach_transport(); 2681 if (rc) 2682 goto detach_ft; 2683 2684 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); 2685 if (!bnx2fc_wq) { 2686 rc = -ENOMEM; 2687 goto release_bt; 2688 } 2689 2690 bg = &bnx2fc_global; 2691 skb_queue_head_init(&bg->fcoe_rx_list); 2692 l2_thread = kthread_create(bnx2fc_l2_rcv_thread, 2693 (void *)bg, 2694 "bnx2fc_l2_thread"); 2695 if (IS_ERR(l2_thread)) { 2696 rc = PTR_ERR(l2_thread); 2697 goto free_wq; 2698 } 2699 wake_up_process(l2_thread); 2700 spin_lock_bh(&bg->fcoe_rx_list.lock); 2701 bg->kthread = l2_thread; 2702 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2703 2704 for_each_possible_cpu(cpu) { 2705 p = &per_cpu(bnx2fc_percpu, cpu); 2706 INIT_LIST_HEAD(&p->work_list); 2707 spin_lock_init(&p->fp_work_lock); 2708 } 2709 2710 get_online_cpus(); 2711 2712 for_each_online_cpu(cpu) 2713 bnx2fc_percpu_thread_create(cpu); 2714 2715 rc = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN, 2716 "scsi/bnx2fc:online", 2717 bnx2fc_cpu_online, NULL); 2718 if (rc < 0) 2719 goto stop_threads; 2720 bnx2fc_online_state = rc; 2721 2722 cpuhp_setup_state_nocalls(CPUHP_SCSI_BNX2FC_DEAD, "scsi/bnx2fc:dead", 2723 NULL, bnx2fc_cpu_dead); 2724 put_online_cpus(); 2725 2726 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); 2727 2728 return 0; 2729 2730 stop_threads: 2731 for_each_online_cpu(cpu) 2732 bnx2fc_percpu_thread_destroy(cpu); 2733 put_online_cpus(); 2734 kthread_stop(l2_thread); 2735 free_wq: 2736 destroy_workqueue(bnx2fc_wq); 2737 release_bt: 2738 bnx2fc_release_transport(); 2739 detach_ft: 2740 fcoe_transport_detach(&bnx2fc_transport); 2741 out: 2742 return rc; 2743 } 2744 2745 static void __exit bnx2fc_mod_exit(void) 2746 { 2747 LIST_HEAD(to_be_deleted); 2748 struct bnx2fc_hba *hba, *next; 2749 struct fcoe_percpu_s *bg; 2750 struct task_struct *l2_thread; 2751 struct sk_buff *skb; 2752 unsigned int cpu = 0; 2753 2754 /* 2755 * NOTE: Since cnic calls register_driver routine rtnl_lock, 2756 * it will have higher precedence than bnx2fc_dev_lock. 2757 * unregister_device() cannot be called with bnx2fc_dev_lock 2758 * held. 2759 */ 2760 mutex_lock(&bnx2fc_dev_lock); 2761 list_splice_init(&adapter_list, &to_be_deleted); 2762 adapter_count = 0; 2763 mutex_unlock(&bnx2fc_dev_lock); 2764 2765 /* Unregister with cnic */ 2766 list_for_each_entry_safe(hba, next, &to_be_deleted, list) { 2767 list_del_init(&hba->list); 2768 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", 2769 hba); 2770 bnx2fc_ulp_stop(hba); 2771 /* unregister cnic device */ 2772 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, 2773 &hba->reg_with_cnic)) 2774 hba->cnic->unregister_device(hba->cnic, 2775 CNIC_ULP_FCOE); 2776 bnx2fc_hba_destroy(hba); 2777 } 2778 cnic_unregister_driver(CNIC_ULP_FCOE); 2779 2780 /* Destroy global thread */ 2781 bg = &bnx2fc_global; 2782 spin_lock_bh(&bg->fcoe_rx_list.lock); 2783 l2_thread = bg->kthread; 2784 bg->kthread = NULL; 2785 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) 2786 kfree_skb(skb); 2787 2788 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2789 2790 if (l2_thread) 2791 kthread_stop(l2_thread); 2792 2793 get_online_cpus(); 2794 /* Destroy per cpu threads */ 2795 for_each_online_cpu(cpu) { 2796 bnx2fc_percpu_thread_destroy(cpu); 2797 } 2798 2799 cpuhp_remove_state_nocalls(bnx2fc_online_state); 2800 cpuhp_remove_state_nocalls(CPUHP_SCSI_BNX2FC_DEAD); 2801 2802 put_online_cpus(); 2803 2804 destroy_workqueue(bnx2fc_wq); 2805 /* 2806 * detach from scsi transport 2807 * must happen after all destroys are done 2808 */ 2809 bnx2fc_release_transport(); 2810 2811 /* detach from fcoe transport */ 2812 fcoe_transport_detach(&bnx2fc_transport); 2813 } 2814 2815 module_init(bnx2fc_mod_init); 2816 module_exit(bnx2fc_mod_exit); 2817 2818 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { 2819 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, 2820 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, 2821 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, 2822 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, 2823 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, 2824 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, 2825 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, 2826 2827 .get_fcoe_fcf_selected = fcoe_fcf_get_selected, 2828 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, 2829 }; 2830 2831 static struct fc_function_template bnx2fc_transport_function = { 2832 .show_host_node_name = 1, 2833 .show_host_port_name = 1, 2834 .show_host_supported_classes = 1, 2835 .show_host_supported_fc4s = 1, 2836 .show_host_active_fc4s = 1, 2837 .show_host_maxframe_size = 1, 2838 2839 .show_host_port_id = 1, 2840 .show_host_supported_speeds = 1, 2841 .get_host_speed = fc_get_host_speed, 2842 .show_host_speed = 1, 2843 .show_host_port_type = 1, 2844 .get_host_port_state = fc_get_host_port_state, 2845 .show_host_port_state = 1, 2846 .show_host_symbolic_name = 1, 2847 2848 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2849 sizeof(struct bnx2fc_rport)), 2850 .show_rport_maxframe_size = 1, 2851 .show_rport_supported_classes = 1, 2852 2853 .show_host_fabric_name = 1, 2854 .show_starget_node_name = 1, 2855 .show_starget_port_name = 1, 2856 .show_starget_port_id = 1, 2857 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2858 .show_rport_dev_loss_tmo = 1, 2859 .get_fc_host_stats = bnx2fc_get_host_stats, 2860 2861 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2862 2863 .terminate_rport_io = fc_rport_terminate_io, 2864 2865 .vport_create = bnx2fc_vport_create, 2866 .vport_delete = bnx2fc_vport_destroy, 2867 .vport_disable = bnx2fc_vport_disable, 2868 .bsg_request = fc_lport_bsg_request, 2869 }; 2870 2871 static struct fc_function_template bnx2fc_vport_xport_function = { 2872 .show_host_node_name = 1, 2873 .show_host_port_name = 1, 2874 .show_host_supported_classes = 1, 2875 .show_host_supported_fc4s = 1, 2876 .show_host_active_fc4s = 1, 2877 .show_host_maxframe_size = 1, 2878 2879 .show_host_port_id = 1, 2880 .show_host_supported_speeds = 1, 2881 .get_host_speed = fc_get_host_speed, 2882 .show_host_speed = 1, 2883 .show_host_port_type = 1, 2884 .get_host_port_state = fc_get_host_port_state, 2885 .show_host_port_state = 1, 2886 .show_host_symbolic_name = 1, 2887 2888 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2889 sizeof(struct bnx2fc_rport)), 2890 .show_rport_maxframe_size = 1, 2891 .show_rport_supported_classes = 1, 2892 2893 .show_host_fabric_name = 1, 2894 .show_starget_node_name = 1, 2895 .show_starget_port_name = 1, 2896 .show_starget_port_id = 1, 2897 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2898 .show_rport_dev_loss_tmo = 1, 2899 .get_fc_host_stats = fc_get_host_stats, 2900 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2901 .terminate_rport_io = fc_rport_terminate_io, 2902 .bsg_request = fc_lport_bsg_request, 2903 }; 2904 2905 /* 2906 * Additional scsi_host attributes. 2907 */ 2908 static ssize_t 2909 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr, 2910 char *buf) 2911 { 2912 struct Scsi_Host *shost = class_to_shost(dev); 2913 struct fc_lport *lport = shost_priv(shost); 2914 struct fcoe_port *port = lport_priv(lport); 2915 struct bnx2fc_interface *interface = port->priv; 2916 2917 sprintf(buf, "%u\n", interface->tm_timeout); 2918 return strlen(buf); 2919 } 2920 2921 static ssize_t 2922 bnx2fc_tm_timeout_store(struct device *dev, 2923 struct device_attribute *attr, const char *buf, size_t count) 2924 { 2925 struct Scsi_Host *shost = class_to_shost(dev); 2926 struct fc_lport *lport = shost_priv(shost); 2927 struct fcoe_port *port = lport_priv(lport); 2928 struct bnx2fc_interface *interface = port->priv; 2929 int rval, val; 2930 2931 rval = kstrtouint(buf, 10, &val); 2932 if (rval) 2933 return rval; 2934 if (val > 255) 2935 return -ERANGE; 2936 2937 interface->tm_timeout = (u8)val; 2938 return strlen(buf); 2939 } 2940 2941 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show, 2942 bnx2fc_tm_timeout_store); 2943 2944 static struct device_attribute *bnx2fc_host_attrs[] = { 2945 &dev_attr_tm_timeout, 2946 NULL, 2947 }; 2948 2949 /** 2950 * scsi_host_template structure used while registering with SCSI-ml 2951 */ 2952 static struct scsi_host_template bnx2fc_shost_template = { 2953 .module = THIS_MODULE, 2954 .name = "QLogic Offload FCoE Initiator", 2955 .queuecommand = bnx2fc_queuecommand, 2956 .eh_timed_out = fc_eh_timed_out, 2957 .eh_abort_handler = bnx2fc_eh_abort, /* abts */ 2958 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ 2959 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ 2960 .eh_host_reset_handler = fc_eh_host_reset, 2961 .slave_alloc = fc_slave_alloc, 2962 .change_queue_depth = scsi_change_queue_depth, 2963 .this_id = -1, 2964 .cmd_per_lun = 3, 2965 .use_clustering = ENABLE_CLUSTERING, 2966 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, 2967 .max_sectors = 1024, 2968 .track_queue_depth = 1, 2969 .slave_configure = bnx2fc_slave_configure, 2970 .shost_attrs = bnx2fc_host_attrs, 2971 }; 2972 2973 static struct libfc_function_template bnx2fc_libfc_fcn_templ = { 2974 .frame_send = bnx2fc_xmit, 2975 .elsct_send = bnx2fc_elsct_send, 2976 .fcp_abort_io = bnx2fc_abort_io, 2977 .fcp_cleanup = bnx2fc_cleanup, 2978 .get_lesb = fcoe_get_lesb, 2979 .rport_event_callback = bnx2fc_rport_event_handler, 2980 }; 2981 2982 /** 2983 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface 2984 * structure carrying callback function pointers 2985 */ 2986 static struct cnic_ulp_ops bnx2fc_cnic_cb = { 2987 .owner = THIS_MODULE, 2988 .cnic_init = bnx2fc_ulp_init, 2989 .cnic_exit = bnx2fc_ulp_exit, 2990 .cnic_start = bnx2fc_ulp_start, 2991 .cnic_stop = bnx2fc_ulp_stop, 2992 .indicate_kcqes = bnx2fc_indicate_kcqe, 2993 .indicate_netevent = bnx2fc_indicate_netevent, 2994 .cnic_get_stats = bnx2fc_ulp_get_stats, 2995 }; 2996