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) 2014-2016 QLogic Corporation 8 * Copyright (c) 2016-2017 Cavium Inc. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation. 13 * 14 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com) 15 */ 16 17 #include "bnx2fc.h" 18 19 static struct list_head adapter_list; 20 static struct list_head if_list; 21 static u32 adapter_count; 22 static DEFINE_MUTEX(bnx2fc_dev_lock); 23 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu); 24 25 #define DRV_MODULE_NAME "bnx2fc" 26 #define DRV_MODULE_VERSION BNX2FC_VERSION 27 #define DRV_MODULE_RELDATE "October 15, 2015" 28 29 30 static char version[] = 31 "QLogic FCoE Driver " DRV_MODULE_NAME \ 32 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; 33 34 35 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>"); 36 MODULE_DESCRIPTION("QLogic FCoE Driver"); 37 MODULE_LICENSE("GPL"); 38 MODULE_VERSION(DRV_MODULE_VERSION); 39 40 #define BNX2FC_MAX_QUEUE_DEPTH 256 41 #define BNX2FC_MIN_QUEUE_DEPTH 32 42 #define FCOE_WORD_TO_BYTE 4 43 44 static struct scsi_transport_template *bnx2fc_transport_template; 45 static struct scsi_transport_template *bnx2fc_vport_xport_template; 46 47 struct workqueue_struct *bnx2fc_wq; 48 49 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure. 50 * Here the io threads are per cpu but the l2 thread is just one 51 */ 52 struct fcoe_percpu_s bnx2fc_global; 53 DEFINE_SPINLOCK(bnx2fc_global_lock); 54 55 static struct cnic_ulp_ops bnx2fc_cnic_cb; 56 static struct libfc_function_template bnx2fc_libfc_fcn_templ; 57 static struct scsi_host_template bnx2fc_shost_template; 58 static struct fc_function_template bnx2fc_transport_function; 59 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ; 60 static struct fc_function_template bnx2fc_vport_xport_function; 61 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode); 62 static void __bnx2fc_destroy(struct bnx2fc_interface *interface); 63 static int bnx2fc_destroy(struct net_device *net_device); 64 static int bnx2fc_enable(struct net_device *netdev); 65 static int bnx2fc_disable(struct net_device *netdev); 66 67 /* fcoe_syfs control interface handlers */ 68 static int bnx2fc_ctlr_alloc(struct net_device *netdev); 69 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev); 70 71 static void bnx2fc_recv_frame(struct sk_buff *skb); 72 73 static void bnx2fc_start_disc(struct bnx2fc_interface *interface); 74 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev); 75 static int bnx2fc_lport_config(struct fc_lport *lport); 76 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba); 77 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba); 78 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba); 79 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba); 80 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba); 81 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 82 struct device *parent, int npiv); 83 static void bnx2fc_destroy_work(struct work_struct *work); 84 85 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev); 86 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 87 *phys_dev); 88 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface); 89 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic); 90 91 static int bnx2fc_fw_init(struct bnx2fc_hba *hba); 92 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba); 93 94 static void bnx2fc_port_shutdown(struct fc_lport *lport); 95 static void bnx2fc_stop(struct bnx2fc_interface *interface); 96 static int __init bnx2fc_mod_init(void); 97 static void __exit bnx2fc_mod_exit(void); 98 99 unsigned int bnx2fc_debug_level; 100 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR); 101 MODULE_PARM_DESC(debug_logging, 102 "Option to enable extended logging,\n" 103 "\t\tDefault is 0 - no logging.\n" 104 "\t\t0x01 - SCSI cmd error, cleanup.\n" 105 "\t\t0x02 - Session setup, cleanup, etc.\n" 106 "\t\t0x04 - lport events, link, mtu, etc.\n" 107 "\t\t0x08 - ELS logs.\n" 108 "\t\t0x10 - fcoe L2 fame related logs.\n" 109 "\t\t0xff - LOG all messages."); 110 111 uint bnx2fc_devloss_tmo; 112 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO); 113 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports " 114 "attached via bnx2fc."); 115 116 uint bnx2fc_max_luns = BNX2FC_MAX_LUN; 117 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO); 118 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default " 119 "0xffff."); 120 121 uint bnx2fc_queue_depth; 122 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO); 123 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices " 124 "attached via bnx2fc."); 125 126 uint bnx2fc_log_fka; 127 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR); 128 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is " 129 "initiating a FIP keep alive when debug logging is enabled."); 130 131 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport) 132 { 133 return ((struct bnx2fc_interface *) 134 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev; 135 } 136 137 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev) 138 { 139 struct fcoe_ctlr_device *ctlr_dev = 140 fcoe_fcf_dev_to_ctlr_dev(fcf_dev); 141 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); 142 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr); 143 144 fcf_dev->vlan_id = fcoe->vlan_id; 145 } 146 147 static void bnx2fc_clean_rx_queue(struct fc_lport *lp) 148 { 149 struct fcoe_percpu_s *bg; 150 struct fcoe_rcv_info *fr; 151 struct sk_buff_head *list; 152 struct sk_buff *skb, *next; 153 struct sk_buff *head; 154 155 bg = &bnx2fc_global; 156 spin_lock_bh(&bg->fcoe_rx_list.lock); 157 list = &bg->fcoe_rx_list; 158 head = list->next; 159 for (skb = head; skb != (struct sk_buff *)list; 160 skb = next) { 161 next = skb->next; 162 fr = fcoe_dev_from_skb(skb); 163 if (fr->fr_dev == lp) { 164 __skb_unlink(skb, list); 165 kfree_skb(skb); 166 } 167 } 168 spin_unlock_bh(&bg->fcoe_rx_list.lock); 169 } 170 171 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen) 172 { 173 int rc; 174 spin_lock(&bnx2fc_global_lock); 175 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global); 176 spin_unlock(&bnx2fc_global_lock); 177 178 return rc; 179 } 180 181 static void bnx2fc_abort_io(struct fc_lport *lport) 182 { 183 /* 184 * This function is no-op for bnx2fc, but we do 185 * not want to leave it as NULL either, as libfc 186 * can call the default function which is 187 * fc_fcp_abort_io. 188 */ 189 } 190 191 static void bnx2fc_cleanup(struct fc_lport *lport) 192 { 193 struct fcoe_port *port = lport_priv(lport); 194 struct bnx2fc_interface *interface = port->priv; 195 struct bnx2fc_hba *hba = interface->hba; 196 struct bnx2fc_rport *tgt; 197 int i; 198 199 BNX2FC_MISC_DBG("Entered %s\n", __func__); 200 mutex_lock(&hba->hba_mutex); 201 spin_lock_bh(&hba->hba_lock); 202 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) { 203 tgt = hba->tgt_ofld_list[i]; 204 if (tgt) { 205 /* Cleanup IOs belonging to requested vport */ 206 if (tgt->port == port) { 207 spin_unlock_bh(&hba->hba_lock); 208 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n"); 209 bnx2fc_flush_active_ios(tgt); 210 spin_lock_bh(&hba->hba_lock); 211 } 212 } 213 } 214 spin_unlock_bh(&hba->hba_lock); 215 mutex_unlock(&hba->hba_mutex); 216 } 217 218 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt, 219 struct fc_frame *fp) 220 { 221 struct fc_rport_priv *rdata = tgt->rdata; 222 struct fc_frame_header *fh; 223 int rc = 0; 224 225 fh = fc_frame_header_get(fp); 226 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, " 227 "r_ctl = 0x%x\n", rdata->ids.port_id, 228 ntohs(fh->fh_ox_id), fh->fh_r_ctl); 229 if ((fh->fh_type == FC_TYPE_ELS) && 230 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 231 232 switch (fc_frame_payload_op(fp)) { 233 case ELS_ADISC: 234 rc = bnx2fc_send_adisc(tgt, fp); 235 break; 236 case ELS_LOGO: 237 rc = bnx2fc_send_logo(tgt, fp); 238 break; 239 case ELS_RLS: 240 rc = bnx2fc_send_rls(tgt, fp); 241 break; 242 default: 243 break; 244 } 245 } else if ((fh->fh_type == FC_TYPE_BLS) && 246 (fh->fh_r_ctl == FC_RCTL_BA_ABTS)) 247 BNX2FC_TGT_DBG(tgt, "ABTS frame\n"); 248 else { 249 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x " 250 "rctl 0x%x thru non-offload path\n", 251 fh->fh_type, fh->fh_r_ctl); 252 return -ENODEV; 253 } 254 if (rc) 255 return -ENOMEM; 256 else 257 return 0; 258 } 259 260 /** 261 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function 262 * 263 * @lport: the associated local port 264 * @fp: the fc_frame to be transmitted 265 */ 266 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp) 267 { 268 struct ethhdr *eh; 269 struct fcoe_crc_eof *cp; 270 struct sk_buff *skb; 271 struct fc_frame_header *fh; 272 struct bnx2fc_interface *interface; 273 struct fcoe_ctlr *ctlr; 274 struct bnx2fc_hba *hba; 275 struct fcoe_port *port; 276 struct fcoe_hdr *hp; 277 struct bnx2fc_rport *tgt; 278 struct fc_stats *stats; 279 u8 sof, eof; 280 u32 crc; 281 unsigned int hlen, tlen, elen; 282 int wlen, rc = 0; 283 284 port = (struct fcoe_port *)lport_priv(lport); 285 interface = port->priv; 286 ctlr = bnx2fc_to_ctlr(interface); 287 hba = interface->hba; 288 289 fh = fc_frame_header_get(fp); 290 291 skb = fp_skb(fp); 292 if (!lport->link_up) { 293 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n"); 294 kfree_skb(skb); 295 return 0; 296 } 297 298 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 299 if (!ctlr->sel_fcf) { 300 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n"); 301 kfree_skb(skb); 302 return -EINVAL; 303 } 304 if (fcoe_ctlr_els_send(ctlr, lport, skb)) 305 return 0; 306 } 307 308 sof = fr_sof(fp); 309 eof = fr_eof(fp); 310 311 /* 312 * Snoop the frame header to check if the frame is for 313 * an offloaded session 314 */ 315 /* 316 * tgt_ofld_list access is synchronized using 317 * both hba mutex and hba lock. Atleast hba mutex or 318 * hba lock needs to be held for read access. 319 */ 320 321 spin_lock_bh(&hba->hba_lock); 322 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id)); 323 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) { 324 /* This frame is for offloaded session */ 325 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session " 326 "port_id = 0x%x\n", ntoh24(fh->fh_d_id)); 327 spin_unlock_bh(&hba->hba_lock); 328 rc = bnx2fc_xmit_l2_frame(tgt, fp); 329 if (rc != -ENODEV) { 330 kfree_skb(skb); 331 return rc; 332 } 333 } else { 334 spin_unlock_bh(&hba->hba_lock); 335 } 336 337 elen = sizeof(struct ethhdr); 338 hlen = sizeof(struct fcoe_hdr); 339 tlen = sizeof(struct fcoe_crc_eof); 340 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 341 342 skb->ip_summed = CHECKSUM_NONE; 343 crc = fcoe_fc_crc(fp); 344 345 /* copy port crc and eof to the skb buff */ 346 if (skb_is_nonlinear(skb)) { 347 skb_frag_t *frag; 348 if (bnx2fc_get_paged_crc_eof(skb, tlen)) { 349 kfree_skb(skb); 350 return -ENOMEM; 351 } 352 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 353 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; 354 } else { 355 cp = skb_put(skb, tlen); 356 } 357 358 memset(cp, 0, sizeof(*cp)); 359 cp->fcoe_eof = eof; 360 cp->fcoe_crc32 = cpu_to_le32(~crc); 361 if (skb_is_nonlinear(skb)) { 362 kunmap_atomic(cp); 363 cp = NULL; 364 } 365 366 /* adjust skb network/transport offsets to match mac/fcoe/port */ 367 skb_push(skb, elen + hlen); 368 skb_reset_mac_header(skb); 369 skb_reset_network_header(skb); 370 skb->mac_len = elen; 371 skb->protocol = htons(ETH_P_FCOE); 372 skb->dev = interface->netdev; 373 374 /* fill up mac and fcoe headers */ 375 eh = eth_hdr(skb); 376 eh->h_proto = htons(ETH_P_FCOE); 377 if (ctlr->map_dest) 378 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 379 else 380 /* insert GW address */ 381 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); 382 383 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) 384 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); 385 else 386 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); 387 388 hp = (struct fcoe_hdr *)(eh + 1); 389 memset(hp, 0, sizeof(*hp)); 390 if (FC_FCOE_VER) 391 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 392 hp->fcoe_sof = sof; 393 394 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ 395 if (lport->seq_offload && fr_max_payload(fp)) { 396 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; 397 skb_shinfo(skb)->gso_size = fr_max_payload(fp); 398 } else { 399 skb_shinfo(skb)->gso_type = 0; 400 skb_shinfo(skb)->gso_size = 0; 401 } 402 403 /*update tx stats */ 404 stats = per_cpu_ptr(lport->stats, get_cpu()); 405 stats->TxFrames++; 406 stats->TxWords += wlen; 407 put_cpu(); 408 409 /* send down to lld */ 410 fr_dev(fp) = lport; 411 if (port->fcoe_pending_queue.qlen) 412 fcoe_check_wait_queue(lport, skb); 413 else if (fcoe_start_io(skb)) 414 fcoe_check_wait_queue(lport, skb); 415 416 return 0; 417 } 418 419 /** 420 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ 421 * 422 * @skb: the receive socket buffer 423 * @dev: associated net device 424 * @ptype: context 425 * @olddev: last device 426 * 427 * This function receives the packet and builds FC frame and passes it up 428 */ 429 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev, 430 struct packet_type *ptype, struct net_device *olddev) 431 { 432 struct fc_lport *lport; 433 struct bnx2fc_interface *interface; 434 struct fcoe_ctlr *ctlr; 435 struct fc_frame_header *fh; 436 struct fcoe_rcv_info *fr; 437 struct fcoe_percpu_s *bg; 438 struct sk_buff *tmp_skb; 439 unsigned short oxid; 440 441 interface = container_of(ptype, struct bnx2fc_interface, 442 fcoe_packet_type); 443 ctlr = bnx2fc_to_ctlr(interface); 444 lport = ctlr->lp; 445 446 if (unlikely(lport == NULL)) { 447 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n"); 448 goto err; 449 } 450 451 tmp_skb = skb_share_check(skb, GFP_ATOMIC); 452 if (!tmp_skb) 453 goto err; 454 455 skb = tmp_skb; 456 457 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { 458 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n"); 459 goto err; 460 } 461 462 /* 463 * Check for minimum frame length, and make sure required FCoE 464 * and FC headers are pulled into the linear data area. 465 */ 466 if (unlikely((skb->len < FCOE_MIN_FRAME) || 467 !pskb_may_pull(skb, FCOE_HEADER_LEN))) 468 goto err; 469 470 skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); 471 fh = (struct fc_frame_header *) skb_transport_header(skb); 472 473 oxid = ntohs(fh->fh_ox_id); 474 475 fr = fcoe_dev_from_skb(skb); 476 fr->fr_dev = lport; 477 478 bg = &bnx2fc_global; 479 spin_lock(&bg->fcoe_rx_list.lock); 480 481 __skb_queue_tail(&bg->fcoe_rx_list, skb); 482 if (bg->fcoe_rx_list.qlen == 1) 483 wake_up_process(bg->kthread); 484 485 spin_unlock(&bg->fcoe_rx_list.lock); 486 487 return 0; 488 err: 489 kfree_skb(skb); 490 return -1; 491 } 492 493 static int bnx2fc_l2_rcv_thread(void *arg) 494 { 495 struct fcoe_percpu_s *bg = arg; 496 struct sk_buff *skb; 497 498 set_user_nice(current, MIN_NICE); 499 set_current_state(TASK_INTERRUPTIBLE); 500 while (!kthread_should_stop()) { 501 schedule(); 502 spin_lock_bh(&bg->fcoe_rx_list.lock); 503 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { 504 spin_unlock_bh(&bg->fcoe_rx_list.lock); 505 bnx2fc_recv_frame(skb); 506 spin_lock_bh(&bg->fcoe_rx_list.lock); 507 } 508 __set_current_state(TASK_INTERRUPTIBLE); 509 spin_unlock_bh(&bg->fcoe_rx_list.lock); 510 } 511 __set_current_state(TASK_RUNNING); 512 return 0; 513 } 514 515 516 static void bnx2fc_recv_frame(struct sk_buff *skb) 517 { 518 u32 fr_len; 519 struct fc_lport *lport; 520 struct fcoe_rcv_info *fr; 521 struct fc_stats *stats; 522 struct fc_frame_header *fh; 523 struct fcoe_crc_eof crc_eof; 524 struct fc_frame *fp; 525 struct fc_lport *vn_port; 526 struct fcoe_port *port, *phys_port; 527 u8 *mac = NULL; 528 u8 *dest_mac = NULL; 529 struct fcoe_hdr *hp; 530 struct bnx2fc_interface *interface; 531 struct fcoe_ctlr *ctlr; 532 533 fr = fcoe_dev_from_skb(skb); 534 lport = fr->fr_dev; 535 if (unlikely(lport == NULL)) { 536 printk(KERN_ERR PFX "Invalid lport struct\n"); 537 kfree_skb(skb); 538 return; 539 } 540 541 if (skb_is_nonlinear(skb)) 542 skb_linearize(skb); 543 mac = eth_hdr(skb)->h_source; 544 dest_mac = eth_hdr(skb)->h_dest; 545 546 /* Pull the header */ 547 hp = (struct fcoe_hdr *) skb_network_header(skb); 548 fh = (struct fc_frame_header *) skb_transport_header(skb); 549 skb_pull(skb, sizeof(struct fcoe_hdr)); 550 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 551 552 fp = (struct fc_frame *)skb; 553 fc_frame_init(fp); 554 fr_dev(fp) = lport; 555 fr_sof(fp) = hp->fcoe_sof; 556 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 557 kfree_skb(skb); 558 return; 559 } 560 fr_eof(fp) = crc_eof.fcoe_eof; 561 fr_crc(fp) = crc_eof.fcoe_crc32; 562 if (pskb_trim(skb, fr_len)) { 563 kfree_skb(skb); 564 return; 565 } 566 567 phys_port = lport_priv(lport); 568 interface = phys_port->priv; 569 ctlr = bnx2fc_to_ctlr(interface); 570 571 fh = fc_frame_header_get(fp); 572 573 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 574 BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n", 575 dest_mac); 576 kfree_skb(skb); 577 return; 578 } 579 580 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 581 if (vn_port) { 582 port = lport_priv(vn_port); 583 if (!ether_addr_equal(port->data_src_addr, dest_mac)) { 584 BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); 585 kfree_skb(skb); 586 return; 587 } 588 } 589 if (ctlr->state) { 590 if (!ether_addr_equal(mac, ctlr->dest_addr)) { 591 BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n", 592 mac, ctlr->dest_addr); 593 kfree_skb(skb); 594 return; 595 } 596 } 597 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 598 fh->fh_type == FC_TYPE_FCP) { 599 /* Drop FCP data. We dont this in L2 path */ 600 kfree_skb(skb); 601 return; 602 } 603 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 604 fh->fh_type == FC_TYPE_ELS) { 605 switch (fc_frame_payload_op(fp)) { 606 case ELS_LOGO: 607 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 608 /* drop non-FIP LOGO */ 609 kfree_skb(skb); 610 return; 611 } 612 break; 613 } 614 } 615 616 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 617 /* Drop incoming ABTS */ 618 kfree_skb(skb); 619 return; 620 } 621 622 /* 623 * If the destination ID from the frame header does not match what we 624 * have on record for lport and the search for a NPIV port came up 625 * empty then this is not addressed to our port so simply drop it. 626 */ 627 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 628 BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", 629 lport->port_id, ntoh24(fh->fh_d_id)); 630 kfree_skb(skb); 631 return; 632 } 633 634 stats = per_cpu_ptr(lport->stats, smp_processor_id()); 635 stats->RxFrames++; 636 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; 637 638 if (le32_to_cpu(fr_crc(fp)) != 639 ~crc32(~0, skb->data, fr_len)) { 640 if (stats->InvalidCRCCount < 5) 641 printk(KERN_WARNING PFX "dropping frame with " 642 "CRC error\n"); 643 stats->InvalidCRCCount++; 644 kfree_skb(skb); 645 return; 646 } 647 fc_exch_recv(lport, fp); 648 } 649 650 /** 651 * bnx2fc_percpu_io_thread - thread per cpu for ios 652 * 653 * @arg: ptr to bnx2fc_percpu_info structure 654 */ 655 static int bnx2fc_percpu_io_thread(void *arg) 656 { 657 struct bnx2fc_percpu_s *p = arg; 658 struct bnx2fc_work *work, *tmp; 659 LIST_HEAD(work_list); 660 661 set_user_nice(current, MIN_NICE); 662 set_current_state(TASK_INTERRUPTIBLE); 663 while (!kthread_should_stop()) { 664 schedule(); 665 spin_lock_bh(&p->fp_work_lock); 666 while (!list_empty(&p->work_list)) { 667 list_splice_init(&p->work_list, &work_list); 668 spin_unlock_bh(&p->fp_work_lock); 669 670 list_for_each_entry_safe(work, tmp, &work_list, list) { 671 list_del_init(&work->list); 672 bnx2fc_process_cq_compl(work->tgt, work->wqe); 673 kfree(work); 674 } 675 676 spin_lock_bh(&p->fp_work_lock); 677 } 678 __set_current_state(TASK_INTERRUPTIBLE); 679 spin_unlock_bh(&p->fp_work_lock); 680 } 681 __set_current_state(TASK_RUNNING); 682 683 return 0; 684 } 685 686 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) 687 { 688 struct fc_host_statistics *bnx2fc_stats; 689 struct fc_lport *lport = shost_priv(shost); 690 struct fcoe_port *port = lport_priv(lport); 691 struct bnx2fc_interface *interface = port->priv; 692 struct bnx2fc_hba *hba = interface->hba; 693 struct fcoe_statistics_params *fw_stats; 694 int rc = 0; 695 696 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; 697 if (!fw_stats) 698 return NULL; 699 700 mutex_lock(&hba->hba_stats_mutex); 701 702 bnx2fc_stats = fc_get_host_stats(shost); 703 704 init_completion(&hba->stat_req_done); 705 if (bnx2fc_send_stat_req(hba)) 706 goto unlock_stats_mutex; 707 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); 708 if (!rc) { 709 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); 710 goto unlock_stats_mutex; 711 } 712 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); 713 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; 714 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); 715 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; 716 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); 717 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); 718 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); 719 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; 720 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); 721 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); 722 723 bnx2fc_stats->dumped_frames = 0; 724 bnx2fc_stats->lip_count = 0; 725 bnx2fc_stats->nos_count = 0; 726 bnx2fc_stats->loss_of_sync_count = 0; 727 bnx2fc_stats->loss_of_signal_count = 0; 728 bnx2fc_stats->prim_seq_protocol_err_count = 0; 729 730 memcpy(&hba->prev_stats, hba->stats_buffer, 731 sizeof(struct fcoe_statistics_params)); 732 733 unlock_stats_mutex: 734 mutex_unlock(&hba->hba_stats_mutex); 735 return bnx2fc_stats; 736 } 737 738 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) 739 { 740 struct fcoe_port *port = lport_priv(lport); 741 struct bnx2fc_interface *interface = port->priv; 742 struct bnx2fc_hba *hba = interface->hba; 743 struct Scsi_Host *shost = lport->host; 744 int rc = 0; 745 746 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; 747 shost->max_lun = bnx2fc_max_luns; 748 shost->max_id = BNX2FC_MAX_FCP_TGT; 749 shost->max_channel = 0; 750 if (lport->vport) 751 shost->transportt = bnx2fc_vport_xport_template; 752 else 753 shost->transportt = bnx2fc_transport_template; 754 755 /* Add the new host to SCSI-ml */ 756 rc = scsi_add_host(lport->host, dev); 757 if (rc) { 758 printk(KERN_ERR PFX "Error on scsi_add_host\n"); 759 return rc; 760 } 761 if (!lport->vport) 762 fc_host_max_npiv_vports(lport->host) = USHRT_MAX; 763 snprintf(fc_host_symbolic_name(lport->host), 256, 764 "%s (QLogic %s) v%s over %s", 765 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION, 766 interface->netdev->name); 767 768 return 0; 769 } 770 771 static int bnx2fc_link_ok(struct fc_lport *lport) 772 { 773 struct fcoe_port *port = lport_priv(lport); 774 struct bnx2fc_interface *interface = port->priv; 775 struct bnx2fc_hba *hba = interface->hba; 776 struct net_device *dev = hba->phys_dev; 777 int rc = 0; 778 779 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) 780 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 781 else { 782 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 783 rc = -1; 784 } 785 return rc; 786 } 787 788 /** 789 * bnx2fc_get_link_state - get network link state 790 * 791 * @hba: adapter instance pointer 792 * 793 * updates adapter structure flag based on netdev state 794 */ 795 void bnx2fc_get_link_state(struct bnx2fc_hba *hba) 796 { 797 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) 798 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 799 else 800 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 801 } 802 803 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) 804 { 805 struct bnx2fc_hba *hba; 806 struct bnx2fc_interface *interface; 807 struct fcoe_ctlr *ctlr; 808 struct fcoe_port *port; 809 u64 wwnn, wwpn; 810 811 port = lport_priv(lport); 812 interface = port->priv; 813 ctlr = bnx2fc_to_ctlr(interface); 814 hba = interface->hba; 815 816 /* require support for get_pauseparam ethtool op. */ 817 if (!hba->phys_dev->ethtool_ops || 818 !hba->phys_dev->ethtool_ops->get_pauseparam) 819 return -EOPNOTSUPP; 820 821 if (fc_set_mfs(lport, BNX2FC_MFS)) 822 return -EINVAL; 823 824 skb_queue_head_init(&port->fcoe_pending_queue); 825 port->fcoe_pending_queue_active = 0; 826 timer_setup(&port->timer, fcoe_queue_timer, 0); 827 828 fcoe_link_speed_update(lport); 829 830 if (!lport->vport) { 831 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) 832 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 833 1, 0); 834 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); 835 fc_set_wwnn(lport, wwnn); 836 837 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) 838 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 839 2, 0); 840 841 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); 842 fc_set_wwpn(lport, wwpn); 843 } 844 845 return 0; 846 } 847 848 static void bnx2fc_destroy_timer(struct timer_list *t) 849 { 850 struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer); 851 852 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " 853 "Destroy compl not received!!\n"); 854 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 855 wake_up_interruptible(&hba->destroy_wait); 856 } 857 858 /** 859 * bnx2fc_indicate_netevent - Generic netdev event handler 860 * 861 * @context: adapter structure pointer 862 * @event: event type 863 * @vlan_id: vlan id - associated vlan id with this event 864 * 865 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and 866 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. 867 */ 868 static void bnx2fc_indicate_netevent(void *context, unsigned long event, 869 u16 vlan_id) 870 { 871 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; 872 struct fcoe_ctlr_device *cdev; 873 struct fc_lport *lport; 874 struct fc_lport *vport; 875 struct bnx2fc_interface *interface, *tmp; 876 struct fcoe_ctlr *ctlr; 877 int wait_for_upload = 0; 878 u32 link_possible = 1; 879 880 if (vlan_id != 0 && event != NETDEV_UNREGISTER) 881 return; 882 883 switch (event) { 884 case NETDEV_UP: 885 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 886 printk(KERN_ERR "indicate_netevent: "\ 887 "hba is not UP!!\n"); 888 break; 889 890 case NETDEV_DOWN: 891 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 892 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 893 link_possible = 0; 894 break; 895 896 case NETDEV_GOING_DOWN: 897 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 898 link_possible = 0; 899 break; 900 901 case NETDEV_CHANGE: 902 break; 903 904 case NETDEV_UNREGISTER: 905 if (!vlan_id) 906 return; 907 mutex_lock(&bnx2fc_dev_lock); 908 list_for_each_entry_safe(interface, tmp, &if_list, list) { 909 if (interface->hba == hba && 910 interface->vlan_id == (vlan_id & VLAN_VID_MASK)) 911 __bnx2fc_destroy(interface); 912 } 913 mutex_unlock(&bnx2fc_dev_lock); 914 915 /* Ensure ALL destroy work has been completed before return */ 916 flush_workqueue(bnx2fc_wq); 917 return; 918 919 default: 920 return; 921 } 922 923 mutex_lock(&bnx2fc_dev_lock); 924 list_for_each_entry(interface, &if_list, list) { 925 926 if (interface->hba != hba) 927 continue; 928 929 ctlr = bnx2fc_to_ctlr(interface); 930 lport = ctlr->lp; 931 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", 932 interface->netdev->name, event); 933 934 fcoe_link_speed_update(lport); 935 936 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 937 938 if (link_possible && !bnx2fc_link_ok(lport)) { 939 switch (cdev->enabled) { 940 case FCOE_CTLR_DISABLED: 941 pr_info("Link up while interface is disabled.\n"); 942 break; 943 case FCOE_CTLR_ENABLED: 944 case FCOE_CTLR_UNUSED: 945 /* Reset max recv frame size to default */ 946 fc_set_mfs(lport, BNX2FC_MFS); 947 /* 948 * ctlr link up will only be handled during 949 * enable to avoid sending discovery 950 * solicitation on a stale vlan 951 */ 952 if (interface->enabled) 953 fcoe_ctlr_link_up(ctlr); 954 }; 955 } else if (fcoe_ctlr_link_down(ctlr)) { 956 switch (cdev->enabled) { 957 case FCOE_CTLR_DISABLED: 958 pr_info("Link down while interface is disabled.\n"); 959 break; 960 case FCOE_CTLR_ENABLED: 961 case FCOE_CTLR_UNUSED: 962 mutex_lock(&lport->lp_mutex); 963 list_for_each_entry(vport, &lport->vports, list) 964 fc_host_port_type(vport->host) = 965 FC_PORTTYPE_UNKNOWN; 966 mutex_unlock(&lport->lp_mutex); 967 fc_host_port_type(lport->host) = 968 FC_PORTTYPE_UNKNOWN; 969 per_cpu_ptr(lport->stats, 970 get_cpu())->LinkFailureCount++; 971 put_cpu(); 972 fcoe_clean_pending_queue(lport); 973 wait_for_upload = 1; 974 }; 975 } 976 } 977 mutex_unlock(&bnx2fc_dev_lock); 978 979 if (wait_for_upload) { 980 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 981 init_waitqueue_head(&hba->shutdown_wait); 982 BNX2FC_MISC_DBG("indicate_netevent " 983 "num_ofld_sess = %d\n", 984 hba->num_ofld_sess); 985 hba->wait_for_link_down = 1; 986 wait_event_interruptible(hba->shutdown_wait, 987 (hba->num_ofld_sess == 0)); 988 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", 989 hba->num_ofld_sess); 990 hba->wait_for_link_down = 0; 991 992 if (signal_pending(current)) 993 flush_signals(current); 994 } 995 } 996 997 static int bnx2fc_libfc_config(struct fc_lport *lport) 998 { 999 1000 /* Set the function pointers set by bnx2fc driver */ 1001 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, 1002 sizeof(struct libfc_function_template)); 1003 fc_elsct_init(lport); 1004 fc_exch_init(lport); 1005 fc_disc_init(lport); 1006 fc_disc_config(lport, lport); 1007 return 0; 1008 } 1009 1010 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba) 1011 { 1012 int fcoe_min_xid, fcoe_max_xid; 1013 1014 fcoe_min_xid = hba->max_xid + 1; 1015 if (nr_cpu_ids <= 2) 1016 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET; 1017 else 1018 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET; 1019 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid, 1020 fcoe_max_xid, NULL)) { 1021 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); 1022 return -ENOMEM; 1023 } 1024 1025 return 0; 1026 } 1027 1028 static int bnx2fc_lport_config(struct fc_lport *lport) 1029 { 1030 lport->link_up = 0; 1031 lport->qfull = 0; 1032 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; 1033 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; 1034 lport->e_d_tov = 2 * 1000; 1035 lport->r_a_tov = 10 * 1000; 1036 1037 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1038 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1039 lport->does_npiv = 1; 1040 1041 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); 1042 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; 1043 1044 /* alloc stats structure */ 1045 if (fc_lport_init_stats(lport)) 1046 return -ENOMEM; 1047 1048 /* Finish fc_lport configuration */ 1049 fc_lport_config(lport); 1050 1051 return 0; 1052 } 1053 1054 /** 1055 * bnx2fc_fip_recv - handle a received FIP frame. 1056 * 1057 * @skb: the received skb 1058 * @dev: associated &net_device 1059 * @ptype: the &packet_type structure which was used to register this handler. 1060 * @orig_dev: original receive &net_device, in case @ dev is a bond. 1061 * 1062 * Returns: 0 for success 1063 */ 1064 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, 1065 struct packet_type *ptype, 1066 struct net_device *orig_dev) 1067 { 1068 struct bnx2fc_interface *interface; 1069 struct fcoe_ctlr *ctlr; 1070 interface = container_of(ptype, struct bnx2fc_interface, 1071 fip_packet_type); 1072 ctlr = bnx2fc_to_ctlr(interface); 1073 fcoe_ctlr_recv(ctlr, skb); 1074 return 0; 1075 } 1076 1077 /** 1078 * bnx2fc_update_src_mac - Update Ethernet MAC filters. 1079 * 1080 * @fip: FCoE controller. 1081 * @old: Unicast MAC address to delete if the MAC is non-zero. 1082 * @new: Unicast MAC address to add. 1083 * 1084 * Remove any previously-set unicast MAC filter. 1085 * Add secondary FCoE MAC address filter for our OUI. 1086 */ 1087 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) 1088 { 1089 struct fcoe_port *port = lport_priv(lport); 1090 1091 memcpy(port->data_src_addr, addr, ETH_ALEN); 1092 } 1093 1094 /** 1095 * bnx2fc_get_src_mac - return the ethernet source address for an lport 1096 * 1097 * @lport: libfc port 1098 */ 1099 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) 1100 { 1101 struct fcoe_port *port; 1102 1103 port = (struct fcoe_port *)lport_priv(lport); 1104 return port->data_src_addr; 1105 } 1106 1107 /** 1108 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. 1109 * 1110 * @fip: FCoE controller. 1111 * @skb: FIP Packet. 1112 */ 1113 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 1114 { 1115 struct fip_header *fiph; 1116 struct ethhdr *eth_hdr; 1117 u16 op; 1118 u8 sub; 1119 1120 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); 1121 eth_hdr = (struct ethhdr *)skb_mac_header(skb); 1122 op = ntohs(fiph->fip_op); 1123 sub = fiph->fip_subcode; 1124 1125 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka) 1126 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n", 1127 eth_hdr->h_source, eth_hdr->h_dest); 1128 1129 skb->dev = bnx2fc_from_ctlr(fip)->netdev; 1130 dev_queue_xmit(skb); 1131 } 1132 1133 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) 1134 { 1135 struct Scsi_Host *shost = vport_to_shost(vport); 1136 struct fc_lport *n_port = shost_priv(shost); 1137 struct fcoe_port *port = lport_priv(n_port); 1138 struct bnx2fc_interface *interface = port->priv; 1139 struct net_device *netdev = interface->netdev; 1140 struct fc_lport *vn_port; 1141 int rc; 1142 char buf[32]; 1143 1144 rc = fcoe_validate_vport_create(vport); 1145 if (rc) { 1146 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1147 printk(KERN_ERR PFX "Failed to create vport, " 1148 "WWPN (0x%s) already exists\n", 1149 buf); 1150 return rc; 1151 } 1152 1153 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1154 printk(KERN_ERR PFX "vn ports cannot be created on" 1155 "this interface\n"); 1156 return -EIO; 1157 } 1158 rtnl_lock(); 1159 mutex_lock(&bnx2fc_dev_lock); 1160 vn_port = bnx2fc_if_create(interface, &vport->dev, 1); 1161 mutex_unlock(&bnx2fc_dev_lock); 1162 rtnl_unlock(); 1163 1164 if (!vn_port) { 1165 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", 1166 netdev->name); 1167 return -EIO; 1168 } 1169 1170 if (bnx2fc_devloss_tmo) 1171 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo; 1172 1173 if (disabled) { 1174 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1175 } else { 1176 vn_port->boot_time = jiffies; 1177 fc_lport_init(vn_port); 1178 fc_fabric_login(vn_port); 1179 fc_vport_setlink(vn_port); 1180 } 1181 return 0; 1182 } 1183 1184 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) 1185 { 1186 struct bnx2fc_lport *blport, *tmp; 1187 1188 spin_lock_bh(&hba->hba_lock); 1189 list_for_each_entry_safe(blport, tmp, &hba->vports, list) { 1190 if (blport->lport == lport) { 1191 list_del(&blport->list); 1192 kfree(blport); 1193 } 1194 } 1195 spin_unlock_bh(&hba->hba_lock); 1196 } 1197 1198 static int bnx2fc_vport_destroy(struct fc_vport *vport) 1199 { 1200 struct Scsi_Host *shost = vport_to_shost(vport); 1201 struct fc_lport *n_port = shost_priv(shost); 1202 struct fc_lport *vn_port = vport->dd_data; 1203 struct fcoe_port *port = lport_priv(vn_port); 1204 struct bnx2fc_interface *interface = port->priv; 1205 struct fc_lport *v_port; 1206 bool found = false; 1207 1208 mutex_lock(&n_port->lp_mutex); 1209 list_for_each_entry(v_port, &n_port->vports, list) 1210 if (v_port->vport == vport) { 1211 found = true; 1212 break; 1213 } 1214 1215 if (!found) { 1216 mutex_unlock(&n_port->lp_mutex); 1217 return -ENOENT; 1218 } 1219 list_del(&vn_port->list); 1220 mutex_unlock(&n_port->lp_mutex); 1221 bnx2fc_free_vport(interface->hba, port->lport); 1222 bnx2fc_port_shutdown(port->lport); 1223 bnx2fc_interface_put(interface); 1224 queue_work(bnx2fc_wq, &port->destroy_work); 1225 return 0; 1226 } 1227 1228 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) 1229 { 1230 struct fc_lport *lport = vport->dd_data; 1231 1232 if (disable) { 1233 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1234 fc_fabric_logoff(lport); 1235 } else { 1236 lport->boot_time = jiffies; 1237 fc_fabric_login(lport); 1238 fc_vport_setlink(lport); 1239 } 1240 return 0; 1241 } 1242 1243 1244 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) 1245 { 1246 struct net_device *netdev = interface->netdev; 1247 struct net_device *physdev = interface->hba->phys_dev; 1248 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1249 struct netdev_hw_addr *ha; 1250 int sel_san_mac = 0; 1251 1252 /* setup Source MAC Address */ 1253 rcu_read_lock(); 1254 for_each_dev_addr(physdev, ha) { 1255 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", 1256 ha->type); 1257 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], 1258 ha->addr[1], ha->addr[2], ha->addr[3], 1259 ha->addr[4], ha->addr[5]); 1260 1261 if ((ha->type == NETDEV_HW_ADDR_T_SAN) && 1262 (is_valid_ether_addr(ha->addr))) { 1263 memcpy(ctlr->ctl_src_addr, ha->addr, 1264 ETH_ALEN); 1265 sel_san_mac = 1; 1266 BNX2FC_MISC_DBG("Found SAN MAC\n"); 1267 } 1268 } 1269 rcu_read_unlock(); 1270 1271 if (!sel_san_mac) 1272 return -ENODEV; 1273 1274 interface->fip_packet_type.func = bnx2fc_fip_recv; 1275 interface->fip_packet_type.type = htons(ETH_P_FIP); 1276 interface->fip_packet_type.dev = netdev; 1277 dev_add_pack(&interface->fip_packet_type); 1278 1279 interface->fcoe_packet_type.func = bnx2fc_rcv; 1280 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); 1281 interface->fcoe_packet_type.dev = netdev; 1282 dev_add_pack(&interface->fcoe_packet_type); 1283 1284 return 0; 1285 } 1286 1287 static int bnx2fc_attach_transport(void) 1288 { 1289 bnx2fc_transport_template = 1290 fc_attach_transport(&bnx2fc_transport_function); 1291 1292 if (bnx2fc_transport_template == NULL) { 1293 printk(KERN_ERR PFX "Failed to attach FC transport\n"); 1294 return -ENODEV; 1295 } 1296 1297 bnx2fc_vport_xport_template = 1298 fc_attach_transport(&bnx2fc_vport_xport_function); 1299 if (bnx2fc_vport_xport_template == NULL) { 1300 printk(KERN_ERR PFX 1301 "Failed to attach FC transport for vport\n"); 1302 fc_release_transport(bnx2fc_transport_template); 1303 bnx2fc_transport_template = NULL; 1304 return -ENODEV; 1305 } 1306 return 0; 1307 } 1308 static void bnx2fc_release_transport(void) 1309 { 1310 fc_release_transport(bnx2fc_transport_template); 1311 fc_release_transport(bnx2fc_vport_xport_template); 1312 bnx2fc_transport_template = NULL; 1313 bnx2fc_vport_xport_template = NULL; 1314 } 1315 1316 static void bnx2fc_interface_release(struct kref *kref) 1317 { 1318 struct fcoe_ctlr_device *ctlr_dev; 1319 struct bnx2fc_interface *interface; 1320 struct fcoe_ctlr *ctlr; 1321 struct net_device *netdev; 1322 1323 interface = container_of(kref, struct bnx2fc_interface, kref); 1324 BNX2FC_MISC_DBG("Interface is being released\n"); 1325 1326 ctlr = bnx2fc_to_ctlr(interface); 1327 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); 1328 netdev = interface->netdev; 1329 1330 /* tear-down FIP controller */ 1331 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) 1332 fcoe_ctlr_destroy(ctlr); 1333 1334 fcoe_ctlr_device_delete(ctlr_dev); 1335 1336 dev_put(netdev); 1337 module_put(THIS_MODULE); 1338 } 1339 1340 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) 1341 { 1342 kref_get(&interface->kref); 1343 } 1344 1345 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) 1346 { 1347 kref_put(&interface->kref, bnx2fc_interface_release); 1348 } 1349 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) 1350 { 1351 /* Free the command manager */ 1352 if (hba->cmd_mgr) { 1353 bnx2fc_cmd_mgr_free(hba->cmd_mgr); 1354 hba->cmd_mgr = NULL; 1355 } 1356 kfree(hba->tgt_ofld_list); 1357 bnx2fc_unbind_pcidev(hba); 1358 kfree(hba); 1359 } 1360 1361 /** 1362 * bnx2fc_hba_create - create a new bnx2fc hba 1363 * 1364 * @cnic: pointer to cnic device 1365 * 1366 * Creates a new FCoE hba on the given device. 1367 * 1368 */ 1369 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) 1370 { 1371 struct bnx2fc_hba *hba; 1372 struct fcoe_capabilities *fcoe_cap; 1373 int rc; 1374 1375 hba = kzalloc(sizeof(*hba), GFP_KERNEL); 1376 if (!hba) { 1377 printk(KERN_ERR PFX "Unable to allocate hba structure\n"); 1378 return NULL; 1379 } 1380 spin_lock_init(&hba->hba_lock); 1381 mutex_init(&hba->hba_mutex); 1382 mutex_init(&hba->hba_stats_mutex); 1383 1384 hba->cnic = cnic; 1385 1386 hba->max_tasks = cnic->max_fcoe_exchanges; 1387 hba->elstm_xids = (hba->max_tasks / 2); 1388 hba->max_outstanding_cmds = hba->elstm_xids; 1389 hba->max_xid = (hba->max_tasks - 1); 1390 1391 rc = bnx2fc_bind_pcidev(hba); 1392 if (rc) { 1393 printk(KERN_ERR PFX "create_adapter: bind error\n"); 1394 goto bind_err; 1395 } 1396 hba->phys_dev = cnic->netdev; 1397 hba->next_conn_id = 0; 1398 1399 hba->tgt_ofld_list = 1400 kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *), 1401 GFP_KERNEL); 1402 if (!hba->tgt_ofld_list) { 1403 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); 1404 goto tgtofld_err; 1405 } 1406 1407 hba->num_ofld_sess = 0; 1408 1409 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba); 1410 if (!hba->cmd_mgr) { 1411 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); 1412 goto cmgr_err; 1413 } 1414 fcoe_cap = &hba->fcoe_cap; 1415 1416 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << 1417 FCOE_IOS_PER_CONNECTION_SHIFT; 1418 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << 1419 FCOE_LOGINS_PER_PORT_SHIFT; 1420 fcoe_cap->capability2 = hba->max_outstanding_cmds << 1421 FCOE_NUMBER_OF_EXCHANGES_SHIFT; 1422 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << 1423 FCOE_NPIV_WWN_PER_PORT_SHIFT; 1424 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << 1425 FCOE_TARGETS_SUPPORTED_SHIFT; 1426 fcoe_cap->capability3 |= hba->max_outstanding_cmds << 1427 FCOE_OUTSTANDING_COMMANDS_SHIFT; 1428 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; 1429 1430 init_waitqueue_head(&hba->shutdown_wait); 1431 init_waitqueue_head(&hba->destroy_wait); 1432 INIT_LIST_HEAD(&hba->vports); 1433 1434 return hba; 1435 1436 cmgr_err: 1437 kfree(hba->tgt_ofld_list); 1438 tgtofld_err: 1439 bnx2fc_unbind_pcidev(hba); 1440 bind_err: 1441 kfree(hba); 1442 return NULL; 1443 } 1444 1445 static struct bnx2fc_interface * 1446 bnx2fc_interface_create(struct bnx2fc_hba *hba, 1447 struct net_device *netdev, 1448 enum fip_state fip_mode) 1449 { 1450 struct fcoe_ctlr_device *ctlr_dev; 1451 struct bnx2fc_interface *interface; 1452 struct fcoe_ctlr *ctlr; 1453 int size; 1454 int rc = 0; 1455 1456 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); 1457 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, 1458 size); 1459 if (!ctlr_dev) { 1460 printk(KERN_ERR PFX "Unable to allocate interface structure\n"); 1461 return NULL; 1462 } 1463 ctlr = fcoe_ctlr_device_priv(ctlr_dev); 1464 ctlr->cdev = ctlr_dev; 1465 interface = fcoe_ctlr_priv(ctlr); 1466 dev_hold(netdev); 1467 kref_init(&interface->kref); 1468 interface->hba = hba; 1469 interface->netdev = netdev; 1470 1471 /* Initialize FIP */ 1472 fcoe_ctlr_init(ctlr, fip_mode); 1473 ctlr->send = bnx2fc_fip_send; 1474 ctlr->update_mac = bnx2fc_update_src_mac; 1475 ctlr->get_src_addr = bnx2fc_get_src_mac; 1476 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); 1477 1478 rc = bnx2fc_interface_setup(interface); 1479 if (!rc) 1480 return interface; 1481 1482 fcoe_ctlr_destroy(ctlr); 1483 dev_put(netdev); 1484 fcoe_ctlr_device_delete(ctlr_dev); 1485 return NULL; 1486 } 1487 1488 /** 1489 * bnx2fc_if_create - Create FCoE instance on a given interface 1490 * 1491 * @interface: FCoE interface to create a local port on 1492 * @parent: Device pointer to be the parent in sysfs for the SCSI host 1493 * @npiv: Indicates if the port is vport or not 1494 * 1495 * Creates a fc_lport instance and a Scsi_Host instance and configure them. 1496 * 1497 * Returns: Allocated fc_lport or an error pointer 1498 */ 1499 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 1500 struct device *parent, int npiv) 1501 { 1502 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1503 struct fc_lport *lport, *n_port; 1504 struct fcoe_port *port; 1505 struct Scsi_Host *shost; 1506 struct fc_vport *vport = dev_to_vport(parent); 1507 struct bnx2fc_lport *blport; 1508 struct bnx2fc_hba *hba = interface->hba; 1509 int rc = 0; 1510 1511 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); 1512 if (!blport) { 1513 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); 1514 return NULL; 1515 } 1516 1517 /* Allocate Scsi_Host structure */ 1518 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds; 1519 if (!npiv) 1520 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); 1521 else 1522 lport = libfc_vport_create(vport, sizeof(*port)); 1523 1524 if (!lport) { 1525 printk(KERN_ERR PFX "could not allocate scsi host structure\n"); 1526 goto free_blport; 1527 } 1528 shost = lport->host; 1529 port = lport_priv(lport); 1530 port->lport = lport; 1531 port->priv = interface; 1532 port->get_netdev = bnx2fc_netdev; 1533 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work); 1534 1535 /* Configure fcoe_port */ 1536 rc = bnx2fc_lport_config(lport); 1537 if (rc) 1538 goto lp_config_err; 1539 1540 if (npiv) { 1541 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", 1542 vport->node_name, vport->port_name); 1543 fc_set_wwnn(lport, vport->node_name); 1544 fc_set_wwpn(lport, vport->port_name); 1545 } 1546 /* Configure netdev and networking properties of the lport */ 1547 rc = bnx2fc_net_config(lport, interface->netdev); 1548 if (rc) { 1549 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); 1550 goto lp_config_err; 1551 } 1552 1553 rc = bnx2fc_shost_config(lport, parent); 1554 if (rc) { 1555 printk(KERN_ERR PFX "Couldn't configure shost for %s\n", 1556 interface->netdev->name); 1557 goto lp_config_err; 1558 } 1559 1560 /* Initialize the libfc library */ 1561 rc = bnx2fc_libfc_config(lport); 1562 if (rc) { 1563 printk(KERN_ERR PFX "Couldn't configure libfc\n"); 1564 goto shost_err; 1565 } 1566 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1567 1568 if (bnx2fc_devloss_tmo) 1569 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo; 1570 1571 /* Allocate exchange manager */ 1572 if (!npiv) 1573 rc = bnx2fc_em_config(lport, hba); 1574 else { 1575 shost = vport_to_shost(vport); 1576 n_port = shost_priv(shost); 1577 rc = fc_exch_mgr_list_clone(n_port, lport); 1578 } 1579 1580 if (rc) { 1581 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); 1582 goto shost_err; 1583 } 1584 1585 bnx2fc_interface_get(interface); 1586 1587 spin_lock_bh(&hba->hba_lock); 1588 blport->lport = lport; 1589 list_add_tail(&blport->list, &hba->vports); 1590 spin_unlock_bh(&hba->hba_lock); 1591 1592 return lport; 1593 1594 shost_err: 1595 scsi_remove_host(shost); 1596 lp_config_err: 1597 scsi_host_put(lport->host); 1598 free_blport: 1599 kfree(blport); 1600 return NULL; 1601 } 1602 1603 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) 1604 { 1605 /* Dont listen for Ethernet packets anymore */ 1606 __dev_remove_pack(&interface->fcoe_packet_type); 1607 __dev_remove_pack(&interface->fip_packet_type); 1608 synchronize_net(); 1609 } 1610 1611 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) 1612 { 1613 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1614 struct fc_lport *lport = ctlr->lp; 1615 struct fcoe_port *port = lport_priv(lport); 1616 struct bnx2fc_hba *hba = interface->hba; 1617 1618 /* Stop the transmit retry timer */ 1619 del_timer_sync(&port->timer); 1620 1621 /* Free existing transmit skbs */ 1622 fcoe_clean_pending_queue(lport); 1623 1624 bnx2fc_net_cleanup(interface); 1625 1626 bnx2fc_free_vport(hba, lport); 1627 } 1628 1629 static void bnx2fc_if_destroy(struct fc_lport *lport) 1630 { 1631 1632 /* Free queued packets for the receive thread */ 1633 bnx2fc_clean_rx_queue(lport); 1634 1635 /* Detach from scsi-ml */ 1636 fc_remove_host(lport->host); 1637 scsi_remove_host(lport->host); 1638 1639 /* 1640 * Note that only the physical lport will have the exchange manager. 1641 * for vports, this function is NOP 1642 */ 1643 fc_exch_mgr_free(lport); 1644 1645 /* Free memory used by statistical counters */ 1646 fc_lport_free_stats(lport); 1647 1648 /* Release Scsi_Host */ 1649 scsi_host_put(lport->host); 1650 } 1651 1652 static void __bnx2fc_destroy(struct bnx2fc_interface *interface) 1653 { 1654 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1655 struct fc_lport *lport = ctlr->lp; 1656 struct fcoe_port *port = lport_priv(lport); 1657 1658 bnx2fc_interface_cleanup(interface); 1659 bnx2fc_stop(interface); 1660 list_del(&interface->list); 1661 bnx2fc_interface_put(interface); 1662 queue_work(bnx2fc_wq, &port->destroy_work); 1663 } 1664 1665 /** 1666 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface 1667 * 1668 * @buffer: The name of the Ethernet interface to be destroyed 1669 * @kp: The associated kernel parameter 1670 * 1671 * Called from sysfs. 1672 * 1673 * Returns: 0 for success 1674 */ 1675 static int bnx2fc_destroy(struct net_device *netdev) 1676 { 1677 struct bnx2fc_interface *interface = NULL; 1678 struct workqueue_struct *timer_work_queue; 1679 struct fcoe_ctlr *ctlr; 1680 int rc = 0; 1681 1682 rtnl_lock(); 1683 mutex_lock(&bnx2fc_dev_lock); 1684 1685 interface = bnx2fc_interface_lookup(netdev); 1686 ctlr = bnx2fc_to_ctlr(interface); 1687 if (!interface || !ctlr->lp) { 1688 rc = -ENODEV; 1689 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); 1690 goto netdev_err; 1691 } 1692 1693 timer_work_queue = interface->timer_work_queue; 1694 __bnx2fc_destroy(interface); 1695 destroy_workqueue(timer_work_queue); 1696 1697 netdev_err: 1698 mutex_unlock(&bnx2fc_dev_lock); 1699 rtnl_unlock(); 1700 return rc; 1701 } 1702 1703 static void bnx2fc_destroy_work(struct work_struct *work) 1704 { 1705 struct fcoe_port *port; 1706 struct fc_lport *lport; 1707 1708 port = container_of(work, struct fcoe_port, destroy_work); 1709 lport = port->lport; 1710 1711 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n"); 1712 1713 bnx2fc_if_destroy(lport); 1714 } 1715 1716 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) 1717 { 1718 bnx2fc_free_fw_resc(hba); 1719 bnx2fc_free_task_ctx(hba); 1720 } 1721 1722 /** 1723 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated 1724 * pci structure 1725 * 1726 * @hba: Adapter instance 1727 */ 1728 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) 1729 { 1730 if (bnx2fc_setup_task_ctx(hba)) 1731 goto mem_err; 1732 1733 if (bnx2fc_setup_fw_resc(hba)) 1734 goto mem_err; 1735 1736 return 0; 1737 mem_err: 1738 bnx2fc_unbind_adapter_devices(hba); 1739 return -ENOMEM; 1740 } 1741 1742 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) 1743 { 1744 struct cnic_dev *cnic; 1745 struct pci_dev *pdev; 1746 1747 if (!hba->cnic) { 1748 printk(KERN_ERR PFX "cnic is NULL\n"); 1749 return -ENODEV; 1750 } 1751 cnic = hba->cnic; 1752 pdev = hba->pcidev = cnic->pcidev; 1753 if (!hba->pcidev) 1754 return -ENODEV; 1755 1756 switch (pdev->device) { 1757 case PCI_DEVICE_ID_NX2_57710: 1758 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN); 1759 break; 1760 case PCI_DEVICE_ID_NX2_57711: 1761 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN); 1762 break; 1763 case PCI_DEVICE_ID_NX2_57712: 1764 case PCI_DEVICE_ID_NX2_57712_MF: 1765 case PCI_DEVICE_ID_NX2_57712_VF: 1766 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN); 1767 break; 1768 case PCI_DEVICE_ID_NX2_57800: 1769 case PCI_DEVICE_ID_NX2_57800_MF: 1770 case PCI_DEVICE_ID_NX2_57800_VF: 1771 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN); 1772 break; 1773 case PCI_DEVICE_ID_NX2_57810: 1774 case PCI_DEVICE_ID_NX2_57810_MF: 1775 case PCI_DEVICE_ID_NX2_57810_VF: 1776 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN); 1777 break; 1778 case PCI_DEVICE_ID_NX2_57840: 1779 case PCI_DEVICE_ID_NX2_57840_MF: 1780 case PCI_DEVICE_ID_NX2_57840_VF: 1781 case PCI_DEVICE_ID_NX2_57840_2_20: 1782 case PCI_DEVICE_ID_NX2_57840_4_10: 1783 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN); 1784 break; 1785 default: 1786 pr_err(PFX "Unknown device id 0x%x\n", pdev->device); 1787 break; 1788 } 1789 pci_dev_get(hba->pcidev); 1790 return 0; 1791 } 1792 1793 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) 1794 { 1795 if (hba->pcidev) { 1796 hba->chip_num[0] = '\0'; 1797 pci_dev_put(hba->pcidev); 1798 } 1799 hba->pcidev = NULL; 1800 } 1801 1802 /** 1803 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats 1804 * 1805 * @handle: transport handle pointing to adapter struture 1806 */ 1807 static int bnx2fc_ulp_get_stats(void *handle) 1808 { 1809 struct bnx2fc_hba *hba = handle; 1810 struct cnic_dev *cnic; 1811 struct fcoe_stats_info *stats_addr; 1812 1813 if (!hba) 1814 return -EINVAL; 1815 1816 cnic = hba->cnic; 1817 stats_addr = &cnic->stats_addr->fcoe_stat; 1818 if (!stats_addr) 1819 return -EINVAL; 1820 1821 strncpy(stats_addr->version, BNX2FC_VERSION, 1822 sizeof(stats_addr->version)); 1823 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX; 1824 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX; 1825 1826 return 0; 1827 } 1828 1829 1830 /** 1831 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance 1832 * 1833 * @handle: transport handle pointing to adapter structure 1834 * 1835 * This function maps adapter structure to pcidev structure and initiates 1836 * firmware handshake to enable/initialize on-chip FCoE components. 1837 * This bnx2fc - cnic interface api callback is used after following 1838 * conditions are met - 1839 * a) underlying network interface is up (marked by event NETDEV_UP 1840 * from netdev 1841 * b) bnx2fc adatper structure is registered. 1842 */ 1843 static void bnx2fc_ulp_start(void *handle) 1844 { 1845 struct bnx2fc_hba *hba = handle; 1846 struct bnx2fc_interface *interface; 1847 struct fcoe_ctlr *ctlr; 1848 struct fc_lport *lport; 1849 1850 mutex_lock(&bnx2fc_dev_lock); 1851 1852 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1853 bnx2fc_fw_init(hba); 1854 1855 BNX2FC_MISC_DBG("bnx2fc started.\n"); 1856 1857 list_for_each_entry(interface, &if_list, list) { 1858 if (interface->hba == hba) { 1859 ctlr = bnx2fc_to_ctlr(interface); 1860 lport = ctlr->lp; 1861 /* Kick off Fabric discovery*/ 1862 printk(KERN_ERR PFX "ulp_init: start discovery\n"); 1863 lport->tt.frame_send = bnx2fc_xmit; 1864 bnx2fc_start_disc(interface); 1865 } 1866 } 1867 1868 mutex_unlock(&bnx2fc_dev_lock); 1869 } 1870 1871 static void bnx2fc_port_shutdown(struct fc_lport *lport) 1872 { 1873 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1874 fc_fabric_logoff(lport); 1875 fc_lport_destroy(lport); 1876 } 1877 1878 static void bnx2fc_stop(struct bnx2fc_interface *interface) 1879 { 1880 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1881 struct fc_lport *lport; 1882 struct fc_lport *vport; 1883 1884 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) 1885 return; 1886 1887 lport = ctlr->lp; 1888 bnx2fc_port_shutdown(lport); 1889 1890 mutex_lock(&lport->lp_mutex); 1891 list_for_each_entry(vport, &lport->vports, list) 1892 fc_host_port_type(vport->host) = 1893 FC_PORTTYPE_UNKNOWN; 1894 mutex_unlock(&lport->lp_mutex); 1895 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1896 fcoe_ctlr_link_down(ctlr); 1897 fcoe_clean_pending_queue(lport); 1898 } 1899 1900 static int bnx2fc_fw_init(struct bnx2fc_hba *hba) 1901 { 1902 #define BNX2FC_INIT_POLL_TIME (1000 / HZ) 1903 int rc = -1; 1904 int i = HZ; 1905 1906 rc = bnx2fc_bind_adapter_devices(hba); 1907 if (rc) { 1908 printk(KERN_ALERT PFX 1909 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); 1910 goto err_out; 1911 } 1912 1913 rc = bnx2fc_send_fw_fcoe_init_msg(hba); 1914 if (rc) { 1915 printk(KERN_ALERT PFX 1916 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); 1917 goto err_unbind; 1918 } 1919 1920 /* 1921 * Wait until the adapter init message is complete, and adapter 1922 * state is UP. 1923 */ 1924 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) 1925 msleep(BNX2FC_INIT_POLL_TIME); 1926 1927 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { 1928 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " 1929 "Ignoring...\n", 1930 hba->cnic->netdev->name); 1931 rc = -1; 1932 goto err_unbind; 1933 } 1934 1935 1936 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); 1937 return 0; 1938 1939 err_unbind: 1940 bnx2fc_unbind_adapter_devices(hba); 1941 err_out: 1942 return rc; 1943 } 1944 1945 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) 1946 { 1947 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { 1948 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { 1949 timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer, 1950 0); 1951 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + 1952 jiffies; 1953 add_timer(&hba->destroy_timer); 1954 wait_event_interruptible(hba->destroy_wait, 1955 test_bit(BNX2FC_FLAG_DESTROY_CMPL, 1956 &hba->flags)); 1957 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 1958 /* This should never happen */ 1959 if (signal_pending(current)) 1960 flush_signals(current); 1961 1962 del_timer_sync(&hba->destroy_timer); 1963 } 1964 bnx2fc_unbind_adapter_devices(hba); 1965 } 1966 } 1967 1968 /** 1969 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance 1970 * 1971 * @handle: transport handle pointing to adapter structure 1972 * 1973 * Driver checks if adapter is already in shutdown mode, if not start 1974 * the shutdown process. 1975 */ 1976 static void bnx2fc_ulp_stop(void *handle) 1977 { 1978 struct bnx2fc_hba *hba = handle; 1979 struct bnx2fc_interface *interface; 1980 1981 printk(KERN_ERR "ULP_STOP\n"); 1982 1983 mutex_lock(&bnx2fc_dev_lock); 1984 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1985 goto exit; 1986 list_for_each_entry(interface, &if_list, list) { 1987 if (interface->hba == hba) 1988 bnx2fc_stop(interface); 1989 } 1990 BUG_ON(hba->num_ofld_sess != 0); 1991 1992 mutex_lock(&hba->hba_mutex); 1993 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 1994 clear_bit(ADAPTER_STATE_GOING_DOWN, 1995 &hba->adapter_state); 1996 1997 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 1998 mutex_unlock(&hba->hba_mutex); 1999 2000 bnx2fc_fw_destroy(hba); 2001 exit: 2002 mutex_unlock(&bnx2fc_dev_lock); 2003 } 2004 2005 static void bnx2fc_start_disc(struct bnx2fc_interface *interface) 2006 { 2007 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 2008 struct fc_lport *lport; 2009 int wait_cnt = 0; 2010 2011 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2012 /* Kick off FIP/FLOGI */ 2013 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 2014 printk(KERN_ERR PFX "Init not done yet\n"); 2015 return; 2016 } 2017 2018 lport = ctlr->lp; 2019 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); 2020 2021 if (!bnx2fc_link_ok(lport) && interface->enabled) { 2022 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); 2023 fcoe_ctlr_link_up(ctlr); 2024 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2025 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2026 } 2027 2028 /* wait for the FCF to be selected before issuing FLOGI */ 2029 while (!ctlr->sel_fcf) { 2030 msleep(250); 2031 /* give up after 3 secs */ 2032 if (++wait_cnt > 12) 2033 break; 2034 } 2035 2036 /* Reset max receive frame size to default */ 2037 if (fc_set_mfs(lport, BNX2FC_MFS)) 2038 return; 2039 2040 fc_lport_init(lport); 2041 fc_fabric_login(lport); 2042 } 2043 2044 2045 /** 2046 * bnx2fc_ulp_init - Initialize an adapter instance 2047 * 2048 * @dev : cnic device handle 2049 * Called from cnic_register_driver() context to initialize all 2050 * enumerated cnic devices. This routine allocates adapter structure 2051 * and other device specific resources. 2052 */ 2053 static void bnx2fc_ulp_init(struct cnic_dev *dev) 2054 { 2055 struct bnx2fc_hba *hba; 2056 int rc = 0; 2057 2058 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2059 /* bnx2fc works only when bnx2x is loaded */ 2060 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || 2061 (dev->max_fcoe_conn == 0)) { 2062 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," 2063 " flags: %lx fcoe_conn: %d\n", 2064 dev->netdev->name, dev->flags, dev->max_fcoe_conn); 2065 return; 2066 } 2067 2068 hba = bnx2fc_hba_create(dev); 2069 if (!hba) { 2070 printk(KERN_ERR PFX "hba initialization failed\n"); 2071 return; 2072 } 2073 2074 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name); 2075 2076 /* Add HBA to the adapter list */ 2077 mutex_lock(&bnx2fc_dev_lock); 2078 list_add_tail(&hba->list, &adapter_list); 2079 adapter_count++; 2080 mutex_unlock(&bnx2fc_dev_lock); 2081 2082 dev->fcoe_cap = &hba->fcoe_cap; 2083 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2084 rc = dev->register_device(dev, CNIC_ULP_FCOE, 2085 (void *) hba); 2086 if (rc) 2087 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); 2088 else 2089 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2090 } 2091 2092 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */ 2093 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr) 2094 { 2095 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2096 2097 if (interface->enabled == true) { 2098 if (!ctlr->lp) { 2099 pr_err(PFX "__bnx2fc_disable: lport not found\n"); 2100 return -ENODEV; 2101 } else { 2102 interface->enabled = false; 2103 fcoe_ctlr_link_down(ctlr); 2104 fcoe_clean_pending_queue(ctlr->lp); 2105 } 2106 } 2107 return 0; 2108 } 2109 2110 /** 2111 * Deperecated: Use bnx2fc_enabled() 2112 */ 2113 static int bnx2fc_disable(struct net_device *netdev) 2114 { 2115 struct bnx2fc_interface *interface; 2116 struct fcoe_ctlr *ctlr; 2117 int rc = 0; 2118 2119 rtnl_lock(); 2120 mutex_lock(&bnx2fc_dev_lock); 2121 2122 interface = bnx2fc_interface_lookup(netdev); 2123 ctlr = bnx2fc_to_ctlr(interface); 2124 2125 if (!interface) { 2126 rc = -ENODEV; 2127 pr_err(PFX "bnx2fc_disable: interface not found\n"); 2128 } else { 2129 rc = __bnx2fc_disable(ctlr); 2130 } 2131 mutex_unlock(&bnx2fc_dev_lock); 2132 rtnl_unlock(); 2133 return rc; 2134 } 2135 2136 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport, 2137 struct cnic_fc_npiv_tbl *npiv_tbl) 2138 { 2139 struct fc_vport_identifiers vpid; 2140 uint i, created = 0; 2141 u64 wwnn = 0; 2142 char wwpn_str[32]; 2143 char wwnn_str[32]; 2144 2145 if (npiv_tbl->count > MAX_NPIV_ENTRIES) { 2146 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n"); 2147 goto done; 2148 } 2149 2150 /* Sanity check the first entry to make sure it's not 0 */ 2151 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 && 2152 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) { 2153 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n"); 2154 goto done; 2155 } 2156 2157 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR; 2158 vpid.vport_type = FC_PORTTYPE_NPIV; 2159 vpid.disable = false; 2160 2161 for (i = 0; i < npiv_tbl->count; i++) { 2162 wwnn = wwn_to_u64(npiv_tbl->wwnn[i]); 2163 if (wwnn == 0) { 2164 /* 2165 * If we get a 0 element from for the WWNN then assume 2166 * the WWNN should be the same as the physical port. 2167 */ 2168 wwnn = lport->wwnn; 2169 } 2170 vpid.node_name = wwnn; 2171 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]); 2172 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name), 2173 "NPIV[%u]:%016llx-%016llx", 2174 created, vpid.port_name, vpid.node_name); 2175 fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str)); 2176 fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str)); 2177 BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str, 2178 wwpn_str); 2179 if (fc_vport_create(lport->host, 0, &vpid)) 2180 created++; 2181 else 2182 BNX2FC_HBA_DBG(lport, "Failed to create vport\n"); 2183 } 2184 done: 2185 return created; 2186 } 2187 2188 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr) 2189 { 2190 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2191 struct bnx2fc_hba *hba; 2192 struct cnic_fc_npiv_tbl *npiv_tbl; 2193 struct fc_lport *lport; 2194 2195 if (interface->enabled == false) { 2196 if (!ctlr->lp) { 2197 pr_err(PFX "__bnx2fc_enable: lport not found\n"); 2198 return -ENODEV; 2199 } else if (!bnx2fc_link_ok(ctlr->lp)) { 2200 fcoe_ctlr_link_up(ctlr); 2201 interface->enabled = true; 2202 } 2203 } 2204 2205 /* Create static NPIV ports if any are contained in NVRAM */ 2206 hba = interface->hba; 2207 lport = ctlr->lp; 2208 2209 if (!hba) 2210 goto done; 2211 2212 if (!hba->cnic) 2213 goto done; 2214 2215 if (!lport) 2216 goto done; 2217 2218 if (!lport->host) 2219 goto done; 2220 2221 if (!hba->cnic->get_fc_npiv_tbl) 2222 goto done; 2223 2224 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL); 2225 if (!npiv_tbl) 2226 goto done; 2227 2228 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl)) 2229 goto done_free; 2230 2231 bnx2fc_npiv_create_vports(lport, npiv_tbl); 2232 done_free: 2233 kfree(npiv_tbl); 2234 done: 2235 return 0; 2236 } 2237 2238 /** 2239 * Deprecated: Use bnx2fc_enabled() 2240 */ 2241 static int bnx2fc_enable(struct net_device *netdev) 2242 { 2243 struct bnx2fc_interface *interface; 2244 struct fcoe_ctlr *ctlr; 2245 int rc = 0; 2246 2247 rtnl_lock(); 2248 mutex_lock(&bnx2fc_dev_lock); 2249 2250 interface = bnx2fc_interface_lookup(netdev); 2251 ctlr = bnx2fc_to_ctlr(interface); 2252 if (!interface) { 2253 rc = -ENODEV; 2254 pr_err(PFX "bnx2fc_enable: interface not found\n"); 2255 } else { 2256 rc = __bnx2fc_enable(ctlr); 2257 } 2258 2259 mutex_unlock(&bnx2fc_dev_lock); 2260 rtnl_unlock(); 2261 return rc; 2262 } 2263 2264 /** 2265 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller 2266 * @cdev: The FCoE Controller that is being enabled or disabled 2267 * 2268 * fcoe_sysfs will ensure that the state of 'enabled' has 2269 * changed, so no checking is necessary here. This routine simply 2270 * calls fcoe_enable or fcoe_disable, both of which are deprecated. 2271 * When those routines are removed the functionality can be merged 2272 * here. 2273 */ 2274 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev) 2275 { 2276 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); 2277 2278 switch (cdev->enabled) { 2279 case FCOE_CTLR_ENABLED: 2280 return __bnx2fc_enable(ctlr); 2281 case FCOE_CTLR_DISABLED: 2282 return __bnx2fc_disable(ctlr); 2283 case FCOE_CTLR_UNUSED: 2284 default: 2285 return -ENOTSUPP; 2286 }; 2287 } 2288 2289 enum bnx2fc_create_link_state { 2290 BNX2FC_CREATE_LINK_DOWN, 2291 BNX2FC_CREATE_LINK_UP, 2292 }; 2293 2294 /** 2295 * _bnx2fc_create() - Create bnx2fc FCoE interface 2296 * @netdev : The net_device object the Ethernet interface to create on 2297 * @fip_mode: The FIP mode for this creation 2298 * @link_state: The ctlr link state on creation 2299 * 2300 * Called from either the libfcoe 'create' module parameter 2301 * via fcoe_create or from fcoe_syfs's ctlr_create file. 2302 * 2303 * libfcoe's 'create' module parameter is deprecated so some 2304 * consolidation of code can be done when that interface is 2305 * removed. 2306 * 2307 * Returns: 0 for success 2308 */ 2309 static int _bnx2fc_create(struct net_device *netdev, 2310 enum fip_mode fip_mode, 2311 enum bnx2fc_create_link_state link_state) 2312 { 2313 struct fcoe_ctlr_device *cdev; 2314 struct fcoe_ctlr *ctlr; 2315 struct bnx2fc_interface *interface; 2316 struct bnx2fc_hba *hba; 2317 struct net_device *phys_dev = netdev; 2318 struct fc_lport *lport; 2319 struct ethtool_drvinfo drvinfo; 2320 int rc = 0; 2321 int vlan_id = 0; 2322 2323 BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); 2324 if (fip_mode != FIP_MODE_FABRIC) { 2325 printk(KERN_ERR "fip mode not FABRIC\n"); 2326 return -EIO; 2327 } 2328 2329 rtnl_lock(); 2330 2331 mutex_lock(&bnx2fc_dev_lock); 2332 2333 if (!try_module_get(THIS_MODULE)) { 2334 rc = -EINVAL; 2335 goto mod_err; 2336 } 2337 2338 /* obtain physical netdev */ 2339 if (is_vlan_dev(netdev)) 2340 phys_dev = vlan_dev_real_dev(netdev); 2341 2342 /* verify if the physical device is a netxtreme2 device */ 2343 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { 2344 memset(&drvinfo, 0, sizeof(drvinfo)); 2345 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); 2346 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { 2347 printk(KERN_ERR PFX "Not a netxtreme2 device\n"); 2348 rc = -EINVAL; 2349 goto netdev_err; 2350 } 2351 } else { 2352 printk(KERN_ERR PFX "unable to obtain drv_info\n"); 2353 rc = -EINVAL; 2354 goto netdev_err; 2355 } 2356 2357 /* obtain interface and initialize rest of the structure */ 2358 hba = bnx2fc_hba_lookup(phys_dev); 2359 if (!hba) { 2360 rc = -ENODEV; 2361 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); 2362 goto netdev_err; 2363 } 2364 2365 if (bnx2fc_interface_lookup(netdev)) { 2366 rc = -EEXIST; 2367 goto netdev_err; 2368 } 2369 2370 interface = bnx2fc_interface_create(hba, netdev, fip_mode); 2371 if (!interface) { 2372 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); 2373 rc = -ENOMEM; 2374 goto ifput_err; 2375 } 2376 2377 if (is_vlan_dev(netdev)) { 2378 vlan_id = vlan_dev_vlan_id(netdev); 2379 interface->vlan_enabled = 1; 2380 } 2381 2382 ctlr = bnx2fc_to_ctlr(interface); 2383 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 2384 interface->vlan_id = vlan_id; 2385 interface->tm_timeout = BNX2FC_TM_TIMEOUT; 2386 2387 interface->timer_work_queue = 2388 create_singlethread_workqueue("bnx2fc_timer_wq"); 2389 if (!interface->timer_work_queue) { 2390 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); 2391 rc = -EINVAL; 2392 goto ifput_err; 2393 } 2394 2395 lport = bnx2fc_if_create(interface, &cdev->dev, 0); 2396 if (!lport) { 2397 printk(KERN_ERR PFX "Failed to create interface (%s)\n", 2398 netdev->name); 2399 rc = -EINVAL; 2400 goto if_create_err; 2401 } 2402 2403 /* Add interface to if_list */ 2404 list_add_tail(&interface->list, &if_list); 2405 2406 lport->boot_time = jiffies; 2407 2408 /* Make this master N_port */ 2409 ctlr->lp = lport; 2410 2411 if (link_state == BNX2FC_CREATE_LINK_UP) 2412 cdev->enabled = FCOE_CTLR_ENABLED; 2413 else 2414 cdev->enabled = FCOE_CTLR_DISABLED; 2415 2416 if (link_state == BNX2FC_CREATE_LINK_UP && 2417 !bnx2fc_link_ok(lport)) { 2418 fcoe_ctlr_link_up(ctlr); 2419 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2420 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2421 } 2422 2423 BNX2FC_HBA_DBG(lport, "create: START DISC\n"); 2424 bnx2fc_start_disc(interface); 2425 2426 if (link_state == BNX2FC_CREATE_LINK_UP) 2427 interface->enabled = true; 2428 2429 /* 2430 * Release from kref_init in bnx2fc_interface_setup, on success 2431 * lport should be holding a reference taken in bnx2fc_if_create 2432 */ 2433 bnx2fc_interface_put(interface); 2434 /* put netdev that was held while calling dev_get_by_name */ 2435 mutex_unlock(&bnx2fc_dev_lock); 2436 rtnl_unlock(); 2437 return 0; 2438 2439 if_create_err: 2440 destroy_workqueue(interface->timer_work_queue); 2441 ifput_err: 2442 bnx2fc_net_cleanup(interface); 2443 bnx2fc_interface_put(interface); 2444 goto mod_err; 2445 netdev_err: 2446 module_put(THIS_MODULE); 2447 mod_err: 2448 mutex_unlock(&bnx2fc_dev_lock); 2449 rtnl_unlock(); 2450 return rc; 2451 } 2452 2453 /** 2454 * bnx2fc_create() - Create a bnx2fc interface 2455 * @netdev : The net_device object the Ethernet interface to create on 2456 * @fip_mode: The FIP mode for this creation 2457 * 2458 * Called from fcoe transport 2459 * 2460 * Returns: 0 for success 2461 */ 2462 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode) 2463 { 2464 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP); 2465 } 2466 2467 /** 2468 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs 2469 * @netdev: The net_device to be used by the allocated FCoE Controller 2470 * 2471 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr 2472 * in a link_down state. The allows the user an opportunity to configure 2473 * the FCoE Controller from sysfs before enabling the FCoE Controller. 2474 * 2475 * Creating in with this routine starts the FCoE Controller in Fabric 2476 * mode. The user can change to VN2VN or another mode before enabling. 2477 */ 2478 static int bnx2fc_ctlr_alloc(struct net_device *netdev) 2479 { 2480 return _bnx2fc_create(netdev, FIP_MODE_FABRIC, 2481 BNX2FC_CREATE_LINK_DOWN); 2482 } 2483 2484 /** 2485 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance 2486 * 2487 * @cnic: Pointer to cnic device instance 2488 * 2489 **/ 2490 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) 2491 { 2492 struct bnx2fc_hba *hba; 2493 2494 /* Called with bnx2fc_dev_lock held */ 2495 list_for_each_entry(hba, &adapter_list, list) { 2496 if (hba->cnic == cnic) 2497 return hba; 2498 } 2499 return NULL; 2500 } 2501 2502 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 2503 *netdev) 2504 { 2505 struct bnx2fc_interface *interface; 2506 2507 /* Called with bnx2fc_dev_lock held */ 2508 list_for_each_entry(interface, &if_list, list) { 2509 if (interface->netdev == netdev) 2510 return interface; 2511 } 2512 return NULL; 2513 } 2514 2515 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device 2516 *phys_dev) 2517 { 2518 struct bnx2fc_hba *hba; 2519 2520 /* Called with bnx2fc_dev_lock held */ 2521 list_for_each_entry(hba, &adapter_list, list) { 2522 if (hba->phys_dev == phys_dev) 2523 return hba; 2524 } 2525 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); 2526 return NULL; 2527 } 2528 2529 /** 2530 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources 2531 * 2532 * @dev cnic device handle 2533 */ 2534 static void bnx2fc_ulp_exit(struct cnic_dev *dev) 2535 { 2536 struct bnx2fc_hba *hba; 2537 struct bnx2fc_interface *interface, *tmp; 2538 2539 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); 2540 2541 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { 2542 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", 2543 dev->netdev->name, dev->flags); 2544 return; 2545 } 2546 2547 mutex_lock(&bnx2fc_dev_lock); 2548 hba = bnx2fc_find_hba_for_cnic(dev); 2549 if (!hba) { 2550 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", 2551 dev); 2552 mutex_unlock(&bnx2fc_dev_lock); 2553 return; 2554 } 2555 2556 list_del_init(&hba->list); 2557 adapter_count--; 2558 2559 list_for_each_entry_safe(interface, tmp, &if_list, list) 2560 /* destroy not called yet, move to quiesced list */ 2561 if (interface->hba == hba) 2562 __bnx2fc_destroy(interface); 2563 mutex_unlock(&bnx2fc_dev_lock); 2564 2565 /* Ensure ALL destroy work has been completed before return */ 2566 flush_workqueue(bnx2fc_wq); 2567 2568 bnx2fc_ulp_stop(hba); 2569 /* unregister cnic device */ 2570 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) 2571 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); 2572 bnx2fc_hba_destroy(hba); 2573 } 2574 2575 static void bnx2fc_rport_terminate_io(struct fc_rport *rport) 2576 { 2577 /* This is a no-op */ 2578 } 2579 2580 /** 2581 * bnx2fc_fcoe_reset - Resets the fcoe 2582 * 2583 * @shost: shost the reset is from 2584 * 2585 * Returns: always 0 2586 */ 2587 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) 2588 { 2589 struct fc_lport *lport = shost_priv(shost); 2590 fc_lport_reset(lport); 2591 return 0; 2592 } 2593 2594 2595 static bool bnx2fc_match(struct net_device *netdev) 2596 { 2597 struct net_device *phys_dev = netdev; 2598 2599 mutex_lock(&bnx2fc_dev_lock); 2600 if (is_vlan_dev(netdev)) 2601 phys_dev = vlan_dev_real_dev(netdev); 2602 2603 if (bnx2fc_hba_lookup(phys_dev)) { 2604 mutex_unlock(&bnx2fc_dev_lock); 2605 return true; 2606 } 2607 2608 mutex_unlock(&bnx2fc_dev_lock); 2609 return false; 2610 } 2611 2612 2613 static struct fcoe_transport bnx2fc_transport = { 2614 .name = {"bnx2fc"}, 2615 .attached = false, 2616 .list = LIST_HEAD_INIT(bnx2fc_transport.list), 2617 .alloc = bnx2fc_ctlr_alloc, 2618 .match = bnx2fc_match, 2619 .create = bnx2fc_create, 2620 .destroy = bnx2fc_destroy, 2621 .enable = bnx2fc_enable, 2622 .disable = bnx2fc_disable, 2623 }; 2624 2625 /** 2626 * bnx2fc_cpu_online - Create a receive thread for an online CPU 2627 * 2628 * @cpu: cpu index for the online cpu 2629 */ 2630 static int bnx2fc_cpu_online(unsigned int cpu) 2631 { 2632 struct bnx2fc_percpu_s *p; 2633 struct task_struct *thread; 2634 2635 p = &per_cpu(bnx2fc_percpu, cpu); 2636 2637 thread = kthread_create_on_node(bnx2fc_percpu_io_thread, 2638 (void *)p, cpu_to_node(cpu), 2639 "bnx2fc_thread/%d", cpu); 2640 if (IS_ERR(thread)) 2641 return PTR_ERR(thread); 2642 2643 /* bind thread to the cpu */ 2644 kthread_bind(thread, cpu); 2645 p->iothread = thread; 2646 wake_up_process(thread); 2647 return 0; 2648 } 2649 2650 static int bnx2fc_cpu_offline(unsigned int cpu) 2651 { 2652 struct bnx2fc_percpu_s *p; 2653 struct task_struct *thread; 2654 struct bnx2fc_work *work, *tmp; 2655 2656 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); 2657 2658 /* Prevent any new work from being queued for this CPU */ 2659 p = &per_cpu(bnx2fc_percpu, cpu); 2660 spin_lock_bh(&p->fp_work_lock); 2661 thread = p->iothread; 2662 p->iothread = NULL; 2663 2664 /* Free all work in the list */ 2665 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 2666 list_del_init(&work->list); 2667 bnx2fc_process_cq_compl(work->tgt, work->wqe); 2668 kfree(work); 2669 } 2670 2671 spin_unlock_bh(&p->fp_work_lock); 2672 2673 if (thread) 2674 kthread_stop(thread); 2675 return 0; 2676 } 2677 2678 static int bnx2fc_slave_configure(struct scsi_device *sdev) 2679 { 2680 if (!bnx2fc_queue_depth) 2681 return 0; 2682 2683 scsi_change_queue_depth(sdev, bnx2fc_queue_depth); 2684 return 0; 2685 } 2686 2687 static enum cpuhp_state bnx2fc_online_state; 2688 2689 /** 2690 * bnx2fc_mod_init - module init entry point 2691 * 2692 * Initialize driver wide global data structures, and register 2693 * with cnic module 2694 **/ 2695 static int __init bnx2fc_mod_init(void) 2696 { 2697 struct fcoe_percpu_s *bg; 2698 struct task_struct *l2_thread; 2699 int rc = 0; 2700 unsigned int cpu = 0; 2701 struct bnx2fc_percpu_s *p; 2702 2703 printk(KERN_INFO PFX "%s", version); 2704 2705 /* register as a fcoe transport */ 2706 rc = fcoe_transport_attach(&bnx2fc_transport); 2707 if (rc) { 2708 printk(KERN_ERR "failed to register an fcoe transport, check " 2709 "if libfcoe is loaded\n"); 2710 goto out; 2711 } 2712 2713 INIT_LIST_HEAD(&adapter_list); 2714 INIT_LIST_HEAD(&if_list); 2715 mutex_init(&bnx2fc_dev_lock); 2716 adapter_count = 0; 2717 2718 /* Attach FC transport template */ 2719 rc = bnx2fc_attach_transport(); 2720 if (rc) 2721 goto detach_ft; 2722 2723 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); 2724 if (!bnx2fc_wq) { 2725 rc = -ENOMEM; 2726 goto release_bt; 2727 } 2728 2729 bg = &bnx2fc_global; 2730 skb_queue_head_init(&bg->fcoe_rx_list); 2731 l2_thread = kthread_create(bnx2fc_l2_rcv_thread, 2732 (void *)bg, 2733 "bnx2fc_l2_thread"); 2734 if (IS_ERR(l2_thread)) { 2735 rc = PTR_ERR(l2_thread); 2736 goto free_wq; 2737 } 2738 wake_up_process(l2_thread); 2739 spin_lock_bh(&bg->fcoe_rx_list.lock); 2740 bg->kthread = l2_thread; 2741 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2742 2743 for_each_possible_cpu(cpu) { 2744 p = &per_cpu(bnx2fc_percpu, cpu); 2745 INIT_LIST_HEAD(&p->work_list); 2746 spin_lock_init(&p->fp_work_lock); 2747 } 2748 2749 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online", 2750 bnx2fc_cpu_online, bnx2fc_cpu_offline); 2751 if (rc < 0) 2752 goto stop_thread; 2753 bnx2fc_online_state = rc; 2754 2755 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); 2756 return 0; 2757 2758 stop_thread: 2759 kthread_stop(l2_thread); 2760 free_wq: 2761 destroy_workqueue(bnx2fc_wq); 2762 release_bt: 2763 bnx2fc_release_transport(); 2764 detach_ft: 2765 fcoe_transport_detach(&bnx2fc_transport); 2766 out: 2767 return rc; 2768 } 2769 2770 static void __exit bnx2fc_mod_exit(void) 2771 { 2772 LIST_HEAD(to_be_deleted); 2773 struct bnx2fc_hba *hba, *next; 2774 struct fcoe_percpu_s *bg; 2775 struct task_struct *l2_thread; 2776 struct sk_buff *skb; 2777 2778 /* 2779 * NOTE: Since cnic calls register_driver routine rtnl_lock, 2780 * it will have higher precedence than bnx2fc_dev_lock. 2781 * unregister_device() cannot be called with bnx2fc_dev_lock 2782 * held. 2783 */ 2784 mutex_lock(&bnx2fc_dev_lock); 2785 list_splice_init(&adapter_list, &to_be_deleted); 2786 adapter_count = 0; 2787 mutex_unlock(&bnx2fc_dev_lock); 2788 2789 /* Unregister with cnic */ 2790 list_for_each_entry_safe(hba, next, &to_be_deleted, list) { 2791 list_del_init(&hba->list); 2792 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", 2793 hba); 2794 bnx2fc_ulp_stop(hba); 2795 /* unregister cnic device */ 2796 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, 2797 &hba->reg_with_cnic)) 2798 hba->cnic->unregister_device(hba->cnic, 2799 CNIC_ULP_FCOE); 2800 bnx2fc_hba_destroy(hba); 2801 } 2802 cnic_unregister_driver(CNIC_ULP_FCOE); 2803 2804 /* Destroy global thread */ 2805 bg = &bnx2fc_global; 2806 spin_lock_bh(&bg->fcoe_rx_list.lock); 2807 l2_thread = bg->kthread; 2808 bg->kthread = NULL; 2809 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) 2810 kfree_skb(skb); 2811 2812 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2813 2814 if (l2_thread) 2815 kthread_stop(l2_thread); 2816 2817 cpuhp_remove_state(bnx2fc_online_state); 2818 2819 destroy_workqueue(bnx2fc_wq); 2820 /* 2821 * detach from scsi transport 2822 * must happen after all destroys are done 2823 */ 2824 bnx2fc_release_transport(); 2825 2826 /* detach from fcoe transport */ 2827 fcoe_transport_detach(&bnx2fc_transport); 2828 } 2829 2830 module_init(bnx2fc_mod_init); 2831 module_exit(bnx2fc_mod_exit); 2832 2833 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { 2834 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, 2835 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, 2836 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, 2837 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, 2838 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, 2839 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, 2840 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, 2841 2842 .get_fcoe_fcf_selected = fcoe_fcf_get_selected, 2843 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, 2844 }; 2845 2846 static struct fc_function_template bnx2fc_transport_function = { 2847 .show_host_node_name = 1, 2848 .show_host_port_name = 1, 2849 .show_host_supported_classes = 1, 2850 .show_host_supported_fc4s = 1, 2851 .show_host_active_fc4s = 1, 2852 .show_host_maxframe_size = 1, 2853 2854 .show_host_port_id = 1, 2855 .show_host_supported_speeds = 1, 2856 .get_host_speed = fc_get_host_speed, 2857 .show_host_speed = 1, 2858 .show_host_port_type = 1, 2859 .get_host_port_state = fc_get_host_port_state, 2860 .show_host_port_state = 1, 2861 .show_host_symbolic_name = 1, 2862 2863 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2864 sizeof(struct bnx2fc_rport)), 2865 .show_rport_maxframe_size = 1, 2866 .show_rport_supported_classes = 1, 2867 2868 .show_host_fabric_name = 1, 2869 .show_starget_node_name = 1, 2870 .show_starget_port_name = 1, 2871 .show_starget_port_id = 1, 2872 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2873 .show_rport_dev_loss_tmo = 1, 2874 .get_fc_host_stats = bnx2fc_get_host_stats, 2875 2876 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2877 2878 .terminate_rport_io = bnx2fc_rport_terminate_io, 2879 2880 .vport_create = bnx2fc_vport_create, 2881 .vport_delete = bnx2fc_vport_destroy, 2882 .vport_disable = bnx2fc_vport_disable, 2883 .bsg_request = fc_lport_bsg_request, 2884 }; 2885 2886 static struct fc_function_template bnx2fc_vport_xport_function = { 2887 .show_host_node_name = 1, 2888 .show_host_port_name = 1, 2889 .show_host_supported_classes = 1, 2890 .show_host_supported_fc4s = 1, 2891 .show_host_active_fc4s = 1, 2892 .show_host_maxframe_size = 1, 2893 2894 .show_host_port_id = 1, 2895 .show_host_supported_speeds = 1, 2896 .get_host_speed = fc_get_host_speed, 2897 .show_host_speed = 1, 2898 .show_host_port_type = 1, 2899 .get_host_port_state = fc_get_host_port_state, 2900 .show_host_port_state = 1, 2901 .show_host_symbolic_name = 1, 2902 2903 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2904 sizeof(struct bnx2fc_rport)), 2905 .show_rport_maxframe_size = 1, 2906 .show_rport_supported_classes = 1, 2907 2908 .show_host_fabric_name = 1, 2909 .show_starget_node_name = 1, 2910 .show_starget_port_name = 1, 2911 .show_starget_port_id = 1, 2912 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2913 .show_rport_dev_loss_tmo = 1, 2914 .get_fc_host_stats = fc_get_host_stats, 2915 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2916 .terminate_rport_io = fc_rport_terminate_io, 2917 .bsg_request = fc_lport_bsg_request, 2918 }; 2919 2920 /* 2921 * Additional scsi_host attributes. 2922 */ 2923 static ssize_t 2924 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr, 2925 char *buf) 2926 { 2927 struct Scsi_Host *shost = class_to_shost(dev); 2928 struct fc_lport *lport = shost_priv(shost); 2929 struct fcoe_port *port = lport_priv(lport); 2930 struct bnx2fc_interface *interface = port->priv; 2931 2932 sprintf(buf, "%u\n", interface->tm_timeout); 2933 return strlen(buf); 2934 } 2935 2936 static ssize_t 2937 bnx2fc_tm_timeout_store(struct device *dev, 2938 struct device_attribute *attr, const char *buf, size_t count) 2939 { 2940 struct Scsi_Host *shost = class_to_shost(dev); 2941 struct fc_lport *lport = shost_priv(shost); 2942 struct fcoe_port *port = lport_priv(lport); 2943 struct bnx2fc_interface *interface = port->priv; 2944 int rval, val; 2945 2946 rval = kstrtouint(buf, 10, &val); 2947 if (rval) 2948 return rval; 2949 if (val > 255) 2950 return -ERANGE; 2951 2952 interface->tm_timeout = (u8)val; 2953 return strlen(buf); 2954 } 2955 2956 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show, 2957 bnx2fc_tm_timeout_store); 2958 2959 static struct device_attribute *bnx2fc_host_attrs[] = { 2960 &dev_attr_tm_timeout, 2961 NULL, 2962 }; 2963 2964 /** 2965 * scsi_host_template structure used while registering with SCSI-ml 2966 */ 2967 static struct scsi_host_template bnx2fc_shost_template = { 2968 .module = THIS_MODULE, 2969 .name = "QLogic Offload FCoE Initiator", 2970 .queuecommand = bnx2fc_queuecommand, 2971 .eh_timed_out = fc_eh_timed_out, 2972 .eh_abort_handler = bnx2fc_eh_abort, /* abts */ 2973 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ 2974 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ 2975 .eh_host_reset_handler = fc_eh_host_reset, 2976 .slave_alloc = fc_slave_alloc, 2977 .change_queue_depth = scsi_change_queue_depth, 2978 .this_id = -1, 2979 .cmd_per_lun = 3, 2980 .use_clustering = ENABLE_CLUSTERING, 2981 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, 2982 .max_sectors = 1024, 2983 .track_queue_depth = 1, 2984 .slave_configure = bnx2fc_slave_configure, 2985 .shost_attrs = bnx2fc_host_attrs, 2986 }; 2987 2988 static struct libfc_function_template bnx2fc_libfc_fcn_templ = { 2989 .frame_send = bnx2fc_xmit, 2990 .elsct_send = bnx2fc_elsct_send, 2991 .fcp_abort_io = bnx2fc_abort_io, 2992 .fcp_cleanup = bnx2fc_cleanup, 2993 .get_lesb = fcoe_get_lesb, 2994 .rport_event_callback = bnx2fc_rport_event_handler, 2995 }; 2996 2997 /** 2998 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface 2999 * structure carrying callback function pointers 3000 */ 3001 static struct cnic_ulp_ops bnx2fc_cnic_cb = { 3002 .owner = THIS_MODULE, 3003 .cnic_init = bnx2fc_ulp_init, 3004 .cnic_exit = bnx2fc_ulp_exit, 3005 .cnic_start = bnx2fc_ulp_start, 3006 .cnic_stop = bnx2fc_ulp_stop, 3007 .indicate_kcqes = bnx2fc_indicate_kcqe, 3008 .indicate_netevent = bnx2fc_indicate_netevent, 3009 .cnic_get_stats = bnx2fc_ulp_get_stats, 3010 }; 3011