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