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