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 19static struct list_head adapter_list; 20static struct list_head if_list; 21static u32 adapter_count; 22static DEFINE_MUTEX(bnx2fc_dev_lock); 23DEFINE_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 30static char version[] = 31 "QLogic FCoE Driver " DRV_MODULE_NAME \ 32 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; 33 34 35MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>"); 36MODULE_DESCRIPTION("QLogic FCoE Driver"); 37MODULE_LICENSE("GPL"); 38MODULE_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 44static struct scsi_transport_template *bnx2fc_transport_template; 45static struct scsi_transport_template *bnx2fc_vport_xport_template; 46 47struct 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 */ 52struct fcoe_percpu_s bnx2fc_global; 53static DEFINE_SPINLOCK(bnx2fc_global_lock); 54 55static struct cnic_ulp_ops bnx2fc_cnic_cb; 56static struct libfc_function_template bnx2fc_libfc_fcn_templ; 57static struct scsi_host_template bnx2fc_shost_template; 58static struct fc_function_template bnx2fc_transport_function; 59static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ; 60static struct fc_function_template bnx2fc_vport_xport_function; 61static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode); 62static void __bnx2fc_destroy(struct bnx2fc_interface *interface); 63static int bnx2fc_destroy(struct net_device *net_device); 64static int bnx2fc_enable(struct net_device *netdev); 65static int bnx2fc_disable(struct net_device *netdev); 66 67/* fcoe_syfs control interface handlers */ 68static int bnx2fc_ctlr_alloc(struct net_device *netdev); 69static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev); 70 71static void bnx2fc_recv_frame(struct sk_buff *skb); 72 73static void bnx2fc_start_disc(struct bnx2fc_interface *interface); 74static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev); 75static int bnx2fc_lport_config(struct fc_lport *lport); 76static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba); 77static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba); 78static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba); 79static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba); 80static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba); 81static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 82 struct device *parent, int npiv); 83static void bnx2fc_port_destroy(struct fcoe_port *port); 84 85static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev); 86static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 87 *phys_dev); 88static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface); 89static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic); 90 91static int bnx2fc_fw_init(struct bnx2fc_hba *hba); 92static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba); 93 94static void bnx2fc_port_shutdown(struct fc_lport *lport); 95static void bnx2fc_stop(struct bnx2fc_interface *interface); 96static int __init bnx2fc_mod_init(void); 97static void __exit bnx2fc_mod_exit(void); 98 99unsigned int bnx2fc_debug_level; 100module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR); 101MODULE_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 111static uint bnx2fc_devloss_tmo; 112module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO); 113MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports " 114 "attached via bnx2fc."); 115 116static uint bnx2fc_max_luns = BNX2FC_MAX_LUN; 117module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO); 118MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default " 119 "0xffff."); 120 121static uint bnx2fc_queue_depth; 122module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO); 123MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices " 124 "attached via bnx2fc."); 125 126static uint bnx2fc_log_fka; 127module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR); 128MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is " 129 "initiating a FIP keep alive when debug logging is enabled."); 130 131static 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 137static 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 147static 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 167int 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 177static 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 187static 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 214static 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 */ 262static 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)) + skb_frag_off(frag); 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 */ 425static 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 fcoe_rcv_info *fr; 432 struct fcoe_percpu_s *bg; 433 434 interface = container_of(ptype, struct bnx2fc_interface, 435 fcoe_packet_type); 436 ctlr = bnx2fc_to_ctlr(interface); 437 lport = ctlr->lp; 438 439 if (unlikely(lport == NULL)) { 440 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n"); 441 goto err; 442 } 443 444 skb = skb_share_check(skb, GFP_ATOMIC); 445 if (!skb) 446 return -1; 447 448 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { 449 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n"); 450 goto err; 451 } 452 453 /* 454 * Check for minimum frame length, and make sure required FCoE 455 * and FC headers are pulled into the linear data area. 456 */ 457 if (unlikely((skb->len < FCOE_MIN_FRAME) || 458 !pskb_may_pull(skb, FCOE_HEADER_LEN))) 459 goto err; 460 461 skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); 462 463 fr = fcoe_dev_from_skb(skb); 464 fr->fr_dev = lport; 465 466 bg = &bnx2fc_global; 467 spin_lock(&bg->fcoe_rx_list.lock); 468 469 __skb_queue_tail(&bg->fcoe_rx_list, skb); 470 if (bg->fcoe_rx_list.qlen == 1) 471 wake_up_process(bg->kthread); 472 473 spin_unlock(&bg->fcoe_rx_list.lock); 474 475 return 0; 476err: 477 kfree_skb(skb); 478 return -1; 479} 480 481static int bnx2fc_l2_rcv_thread(void *arg) 482{ 483 struct fcoe_percpu_s *bg = arg; 484 struct sk_buff *skb; 485 486 set_user_nice(current, MIN_NICE); 487 set_current_state(TASK_INTERRUPTIBLE); 488 while (!kthread_should_stop()) { 489 schedule(); 490 spin_lock_bh(&bg->fcoe_rx_list.lock); 491 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { 492 spin_unlock_bh(&bg->fcoe_rx_list.lock); 493 bnx2fc_recv_frame(skb); 494 spin_lock_bh(&bg->fcoe_rx_list.lock); 495 } 496 __set_current_state(TASK_INTERRUPTIBLE); 497 spin_unlock_bh(&bg->fcoe_rx_list.lock); 498 } 499 __set_current_state(TASK_RUNNING); 500 return 0; 501} 502 503 504static void bnx2fc_recv_frame(struct sk_buff *skb) 505{ 506 u64 crc_err; 507 u32 fr_len, fr_crc; 508 struct fc_lport *lport; 509 struct fcoe_rcv_info *fr; 510 struct fc_stats *stats; 511 struct fc_frame_header *fh; 512 struct fcoe_crc_eof crc_eof; 513 struct fc_frame *fp; 514 struct fc_lport *vn_port; 515 struct fcoe_port *port, *phys_port; 516 u8 *mac = NULL; 517 u8 *dest_mac = NULL; 518 struct fcoe_hdr *hp; 519 struct bnx2fc_interface *interface; 520 struct fcoe_ctlr *ctlr; 521 522 fr = fcoe_dev_from_skb(skb); 523 lport = fr->fr_dev; 524 if (unlikely(lport == NULL)) { 525 printk(KERN_ERR PFX "Invalid lport struct\n"); 526 kfree_skb(skb); 527 return; 528 } 529 530 if (skb_is_nonlinear(skb)) 531 skb_linearize(skb); 532 mac = eth_hdr(skb)->h_source; 533 dest_mac = eth_hdr(skb)->h_dest; 534 535 /* Pull the header */ 536 hp = (struct fcoe_hdr *) skb_network_header(skb); 537 fh = (struct fc_frame_header *) skb_transport_header(skb); 538 skb_pull(skb, sizeof(struct fcoe_hdr)); 539 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 540 541 stats = per_cpu_ptr(lport->stats, get_cpu()); 542 stats->RxFrames++; 543 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; 544 put_cpu(); 545 546 fp = (struct fc_frame *)skb; 547 fc_frame_init(fp); 548 fr_dev(fp) = lport; 549 fr_sof(fp) = hp->fcoe_sof; 550 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 551 kfree_skb(skb); 552 return; 553 } 554 fr_eof(fp) = crc_eof.fcoe_eof; 555 fr_crc(fp) = crc_eof.fcoe_crc32; 556 if (pskb_trim(skb, fr_len)) { 557 kfree_skb(skb); 558 return; 559 } 560 561 phys_port = lport_priv(lport); 562 interface = phys_port->priv; 563 ctlr = bnx2fc_to_ctlr(interface); 564 565 fh = fc_frame_header_get(fp); 566 567 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 568 BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n", 569 dest_mac); 570 kfree_skb(skb); 571 return; 572 } 573 574 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 575 if (vn_port) { 576 port = lport_priv(vn_port); 577 if (!ether_addr_equal(port->data_src_addr, dest_mac)) { 578 BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); 579 kfree_skb(skb); 580 return; 581 } 582 } 583 if (ctlr->state) { 584 if (!ether_addr_equal(mac, ctlr->dest_addr)) { 585 BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n", 586 mac, ctlr->dest_addr); 587 kfree_skb(skb); 588 return; 589 } 590 } 591 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 592 fh->fh_type == FC_TYPE_FCP) { 593 /* Drop FCP data. We dont this in L2 path */ 594 kfree_skb(skb); 595 return; 596 } 597 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 598 fh->fh_type == FC_TYPE_ELS) { 599 switch (fc_frame_payload_op(fp)) { 600 case ELS_LOGO: 601 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 602 /* drop non-FIP LOGO */ 603 kfree_skb(skb); 604 return; 605 } 606 break; 607 } 608 } 609 610 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 611 /* Drop incoming ABTS */ 612 kfree_skb(skb); 613 return; 614 } 615 616 /* 617 * If the destination ID from the frame header does not match what we 618 * have on record for lport and the search for a NPIV port came up 619 * empty then this is not addressed to our port so simply drop it. 620 */ 621 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 622 BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", 623 lport->port_id, ntoh24(fh->fh_d_id)); 624 kfree_skb(skb); 625 return; 626 } 627 628 fr_crc = le32_to_cpu(fr_crc(fp)); 629 630 if (unlikely(fr_crc != ~crc32(~0, skb->data, fr_len))) { 631 stats = per_cpu_ptr(lport->stats, get_cpu()); 632 crc_err = (stats->InvalidCRCCount++); 633 put_cpu(); 634 if (crc_err < 5) 635 printk(KERN_WARNING PFX "dropping frame with " 636 "CRC error\n"); 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 */ 648static 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 work->rq_data, 667 work->num_rq, 668 work->task); 669 kfree(work); 670 } 671 672 spin_lock_bh(&p->fp_work_lock); 673 } 674 __set_current_state(TASK_INTERRUPTIBLE); 675 spin_unlock_bh(&p->fp_work_lock); 676 } 677 __set_current_state(TASK_RUNNING); 678 679 return 0; 680} 681 682static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) 683{ 684 struct fc_host_statistics *bnx2fc_stats; 685 struct fc_lport *lport = shost_priv(shost); 686 struct fcoe_port *port = lport_priv(lport); 687 struct bnx2fc_interface *interface = port->priv; 688 struct bnx2fc_hba *hba = interface->hba; 689 struct fcoe_statistics_params *fw_stats; 690 int rc = 0; 691 692 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; 693 if (!fw_stats) 694 return NULL; 695 696 mutex_lock(&hba->hba_stats_mutex); 697 698 bnx2fc_stats = fc_get_host_stats(shost); 699 700 init_completion(&hba->stat_req_done); 701 if (bnx2fc_send_stat_req(hba)) 702 goto unlock_stats_mutex; 703 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); 704 if (!rc) { 705 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); 706 goto unlock_stats_mutex; 707 } 708 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); 709 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; 710 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); 711 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; 712 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); 713 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); 714 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); 715 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; 716 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); 717 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); 718 719 bnx2fc_stats->dumped_frames = 0; 720 bnx2fc_stats->lip_count = 0; 721 bnx2fc_stats->nos_count = 0; 722 bnx2fc_stats->loss_of_sync_count = 0; 723 bnx2fc_stats->loss_of_signal_count = 0; 724 bnx2fc_stats->prim_seq_protocol_err_count = 0; 725 726 memcpy(&hba->prev_stats, hba->stats_buffer, 727 sizeof(struct fcoe_statistics_params)); 728 729unlock_stats_mutex: 730 mutex_unlock(&hba->hba_stats_mutex); 731 return bnx2fc_stats; 732} 733 734static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) 735{ 736 struct fcoe_port *port = lport_priv(lport); 737 struct bnx2fc_interface *interface = port->priv; 738 struct bnx2fc_hba *hba = interface->hba; 739 struct Scsi_Host *shost = lport->host; 740 int rc = 0; 741 742 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; 743 shost->max_lun = bnx2fc_max_luns; 744 shost->max_id = BNX2FC_MAX_FCP_TGT; 745 shost->max_channel = 0; 746 if (lport->vport) 747 shost->transportt = bnx2fc_vport_xport_template; 748 else 749 shost->transportt = bnx2fc_transport_template; 750 751 /* Add the new host to SCSI-ml */ 752 rc = scsi_add_host(lport->host, dev); 753 if (rc) { 754 printk(KERN_ERR PFX "Error on scsi_add_host\n"); 755 return rc; 756 } 757 if (!lport->vport) 758 fc_host_max_npiv_vports(lport->host) = USHRT_MAX; 759 snprintf(fc_host_symbolic_name(lport->host), 256, 760 "%s (QLogic %s) v%s over %s", 761 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION, 762 interface->netdev->name); 763 764 return 0; 765} 766 767static int bnx2fc_link_ok(struct fc_lport *lport) 768{ 769 struct fcoe_port *port = lport_priv(lport); 770 struct bnx2fc_interface *interface = port->priv; 771 struct bnx2fc_hba *hba = interface->hba; 772 struct net_device *dev = hba->phys_dev; 773 int rc = 0; 774 775 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) 776 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 777 else { 778 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 779 rc = -1; 780 } 781 return rc; 782} 783 784/** 785 * bnx2fc_get_link_state - get network link state 786 * 787 * @hba: adapter instance pointer 788 * 789 * updates adapter structure flag based on netdev state 790 */ 791void bnx2fc_get_link_state(struct bnx2fc_hba *hba) 792{ 793 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) 794 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 795 else 796 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 797} 798 799static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) 800{ 801 struct bnx2fc_hba *hba; 802 struct bnx2fc_interface *interface; 803 struct fcoe_ctlr *ctlr; 804 struct fcoe_port *port; 805 u64 wwnn, wwpn; 806 807 port = lport_priv(lport); 808 interface = port->priv; 809 ctlr = bnx2fc_to_ctlr(interface); 810 hba = interface->hba; 811 812 /* require support for get_pauseparam ethtool op. */ 813 if (!hba->phys_dev->ethtool_ops || 814 !hba->phys_dev->ethtool_ops->get_pauseparam) 815 return -EOPNOTSUPP; 816 817 if (fc_set_mfs(lport, BNX2FC_MFS)) 818 return -EINVAL; 819 820 skb_queue_head_init(&port->fcoe_pending_queue); 821 port->fcoe_pending_queue_active = 0; 822 timer_setup(&port->timer, fcoe_queue_timer, 0); 823 824 fcoe_link_speed_update(lport); 825 826 if (!lport->vport) { 827 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) 828 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 829 1, 0); 830 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); 831 fc_set_wwnn(lport, wwnn); 832 833 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) 834 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 835 2, 0); 836 837 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); 838 fc_set_wwpn(lport, wwpn); 839 } 840 841 return 0; 842} 843 844static void bnx2fc_destroy_timer(struct timer_list *t) 845{ 846 struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer); 847 848 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " 849 "Destroy compl not received!!\n"); 850 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 851 wake_up_interruptible(&hba->destroy_wait); 852} 853 854/** 855 * bnx2fc_indicate_netevent - Generic netdev event handler 856 * 857 * @context: adapter structure pointer 858 * @event: event type 859 * @vlan_id: vlan id - associated vlan id with this event 860 * 861 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and 862 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. 863 */ 864static void bnx2fc_indicate_netevent(void *context, unsigned long event, 865 u16 vlan_id) 866{ 867 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; 868 struct fcoe_ctlr_device *cdev; 869 struct fc_lport *lport; 870 struct fc_lport *vport; 871 struct bnx2fc_interface *interface, *tmp; 872 struct fcoe_ctlr *ctlr; 873 int wait_for_upload = 0; 874 u32 link_possible = 1; 875 876 if (vlan_id != 0 && event != NETDEV_UNREGISTER) 877 return; 878 879 switch (event) { 880 case NETDEV_UP: 881 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 882 printk(KERN_ERR "indicate_netevent: "\ 883 "hba is not UP!!\n"); 884 break; 885 886 case NETDEV_DOWN: 887 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 888 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 889 link_possible = 0; 890 break; 891 892 case NETDEV_GOING_DOWN: 893 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 894 link_possible = 0; 895 break; 896 897 case NETDEV_CHANGE: 898 break; 899 900 case NETDEV_UNREGISTER: 901 if (!vlan_id) 902 return; 903 mutex_lock(&bnx2fc_dev_lock); 904 list_for_each_entry_safe(interface, tmp, &if_list, list) { 905 if (interface->hba == hba && 906 interface->vlan_id == (vlan_id & VLAN_VID_MASK)) 907 __bnx2fc_destroy(interface); 908 } 909 mutex_unlock(&bnx2fc_dev_lock); 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 990static 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 1003static 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 1021static 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 */ 1057static 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 * @lport: The local port 1074 * @addr: Location of data to copy 1075 * 1076 * Remove any previously-set unicast MAC filter. 1077 * Add secondary FCoE MAC address filter for our OUI. 1078 */ 1079static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) 1080{ 1081 struct fcoe_port *port = lport_priv(lport); 1082 1083 memcpy(port->data_src_addr, addr, ETH_ALEN); 1084} 1085 1086/** 1087 * bnx2fc_get_src_mac - return the ethernet source address for an lport 1088 * 1089 * @lport: libfc port 1090 */ 1091static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) 1092{ 1093 struct fcoe_port *port; 1094 1095 port = (struct fcoe_port *)lport_priv(lport); 1096 return port->data_src_addr; 1097} 1098 1099/** 1100 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. 1101 * 1102 * @fip: FCoE controller. 1103 * @skb: FIP Packet. 1104 */ 1105static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 1106{ 1107 struct fip_header *fiph; 1108 struct ethhdr *eth_hdr; 1109 u16 op; 1110 u8 sub; 1111 1112 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); 1113 eth_hdr = (struct ethhdr *)skb_mac_header(skb); 1114 op = ntohs(fiph->fip_op); 1115 sub = fiph->fip_subcode; 1116 1117 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka) 1118 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n", 1119 eth_hdr->h_source, eth_hdr->h_dest); 1120 1121 skb->dev = bnx2fc_from_ctlr(fip)->netdev; 1122 dev_queue_xmit(skb); 1123} 1124 1125static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) 1126{ 1127 struct Scsi_Host *shost = vport_to_shost(vport); 1128 struct fc_lport *n_port = shost_priv(shost); 1129 struct fcoe_port *port = lport_priv(n_port); 1130 struct bnx2fc_interface *interface = port->priv; 1131 struct net_device *netdev = interface->netdev; 1132 struct fc_lport *vn_port; 1133 int rc; 1134 char buf[32]; 1135 1136 rc = fcoe_validate_vport_create(vport); 1137 if (rc) { 1138 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1139 printk(KERN_ERR PFX "Failed to create vport, " 1140 "WWPN (0x%s) already exists\n", 1141 buf); 1142 return rc; 1143 } 1144 1145 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1146 printk(KERN_ERR PFX "vn ports cannot be created on" 1147 "this interface\n"); 1148 return -EIO; 1149 } 1150 rtnl_lock(); 1151 mutex_lock(&bnx2fc_dev_lock); 1152 vn_port = bnx2fc_if_create(interface, &vport->dev, 1); 1153 mutex_unlock(&bnx2fc_dev_lock); 1154 rtnl_unlock(); 1155 1156 if (!vn_port) { 1157 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", 1158 netdev->name); 1159 return -EIO; 1160 } 1161 1162 if (bnx2fc_devloss_tmo) 1163 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo; 1164 1165 if (disabled) { 1166 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1167 } else { 1168 vn_port->boot_time = jiffies; 1169 fc_lport_init(vn_port); 1170 fc_fabric_login(vn_port); 1171 fc_vport_setlink(vn_port); 1172 } 1173 return 0; 1174} 1175 1176static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) 1177{ 1178 struct bnx2fc_lport *blport, *tmp; 1179 1180 spin_lock_bh(&hba->hba_lock); 1181 list_for_each_entry_safe(blport, tmp, &hba->vports, list) { 1182 if (blport->lport == lport) { 1183 list_del(&blport->list); 1184 kfree(blport); 1185 } 1186 } 1187 spin_unlock_bh(&hba->hba_lock); 1188} 1189 1190static int bnx2fc_vport_destroy(struct fc_vport *vport) 1191{ 1192 struct Scsi_Host *shost = vport_to_shost(vport); 1193 struct fc_lport *n_port = shost_priv(shost); 1194 struct fc_lport *vn_port = vport->dd_data; 1195 struct fcoe_port *port = lport_priv(vn_port); 1196 struct bnx2fc_interface *interface = port->priv; 1197 struct fc_lport *v_port; 1198 bool found = false; 1199 1200 mutex_lock(&n_port->lp_mutex); 1201 list_for_each_entry(v_port, &n_port->vports, list) 1202 if (v_port->vport == vport) { 1203 found = true; 1204 break; 1205 } 1206 1207 if (!found) { 1208 mutex_unlock(&n_port->lp_mutex); 1209 return -ENOENT; 1210 } 1211 list_del(&vn_port->list); 1212 mutex_unlock(&n_port->lp_mutex); 1213 bnx2fc_free_vport(interface->hba, port->lport); 1214 bnx2fc_port_shutdown(port->lport); 1215 bnx2fc_port_destroy(port); 1216 bnx2fc_interface_put(interface); 1217 return 0; 1218} 1219 1220static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) 1221{ 1222 struct fc_lport *lport = vport->dd_data; 1223 1224 if (disable) { 1225 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1226 fc_fabric_logoff(lport); 1227 } else { 1228 lport->boot_time = jiffies; 1229 fc_fabric_login(lport); 1230 fc_vport_setlink(lport); 1231 } 1232 return 0; 1233} 1234 1235 1236static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) 1237{ 1238 struct net_device *netdev = interface->netdev; 1239 struct net_device *physdev = interface->hba->phys_dev; 1240 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1241 struct netdev_hw_addr *ha; 1242 int sel_san_mac = 0; 1243 1244 /* setup Source MAC Address */ 1245 rcu_read_lock(); 1246 for_each_dev_addr(physdev, ha) { 1247 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", 1248 ha->type); 1249 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], 1250 ha->addr[1], ha->addr[2], ha->addr[3], 1251 ha->addr[4], ha->addr[5]); 1252 1253 if ((ha->type == NETDEV_HW_ADDR_T_SAN) && 1254 (is_valid_ether_addr(ha->addr))) { 1255 memcpy(ctlr->ctl_src_addr, ha->addr, 1256 ETH_ALEN); 1257 sel_san_mac = 1; 1258 BNX2FC_MISC_DBG("Found SAN MAC\n"); 1259 } 1260 } 1261 rcu_read_unlock(); 1262 1263 if (!sel_san_mac) 1264 return -ENODEV; 1265 1266 interface->fip_packet_type.func = bnx2fc_fip_recv; 1267 interface->fip_packet_type.type = htons(ETH_P_FIP); 1268 interface->fip_packet_type.dev = netdev; 1269 dev_add_pack(&interface->fip_packet_type); 1270 1271 interface->fcoe_packet_type.func = bnx2fc_rcv; 1272 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); 1273 interface->fcoe_packet_type.dev = netdev; 1274 dev_add_pack(&interface->fcoe_packet_type); 1275 1276 return 0; 1277} 1278 1279static int bnx2fc_attach_transport(void) 1280{ 1281 bnx2fc_transport_template = 1282 fc_attach_transport(&bnx2fc_transport_function); 1283 1284 if (bnx2fc_transport_template == NULL) { 1285 printk(KERN_ERR PFX "Failed to attach FC transport\n"); 1286 return -ENODEV; 1287 } 1288 1289 bnx2fc_vport_xport_template = 1290 fc_attach_transport(&bnx2fc_vport_xport_function); 1291 if (bnx2fc_vport_xport_template == NULL) { 1292 printk(KERN_ERR PFX 1293 "Failed to attach FC transport for vport\n"); 1294 fc_release_transport(bnx2fc_transport_template); 1295 bnx2fc_transport_template = NULL; 1296 return -ENODEV; 1297 } 1298 return 0; 1299} 1300static void bnx2fc_release_transport(void) 1301{ 1302 fc_release_transport(bnx2fc_transport_template); 1303 fc_release_transport(bnx2fc_vport_xport_template); 1304 bnx2fc_transport_template = NULL; 1305 bnx2fc_vport_xport_template = NULL; 1306} 1307 1308static void bnx2fc_interface_release(struct kref *kref) 1309{ 1310 struct fcoe_ctlr_device *ctlr_dev; 1311 struct bnx2fc_interface *interface; 1312 struct fcoe_ctlr *ctlr; 1313 struct net_device *netdev; 1314 1315 interface = container_of(kref, struct bnx2fc_interface, kref); 1316 BNX2FC_MISC_DBG("Interface is being released\n"); 1317 1318 ctlr = bnx2fc_to_ctlr(interface); 1319 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); 1320 netdev = interface->netdev; 1321 1322 /* tear-down FIP controller */ 1323 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) 1324 fcoe_ctlr_destroy(ctlr); 1325 1326 fcoe_ctlr_device_delete(ctlr_dev); 1327 1328 dev_put(netdev); 1329 module_put(THIS_MODULE); 1330} 1331 1332static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) 1333{ 1334 kref_get(&interface->kref); 1335} 1336 1337static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) 1338{ 1339 kref_put(&interface->kref, bnx2fc_interface_release); 1340} 1341static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) 1342{ 1343 /* Free the command manager */ 1344 if (hba->cmd_mgr) { 1345 bnx2fc_cmd_mgr_free(hba->cmd_mgr); 1346 hba->cmd_mgr = NULL; 1347 } 1348 kfree(hba->tgt_ofld_list); 1349 bnx2fc_unbind_pcidev(hba); 1350 kfree(hba); 1351} 1352 1353/** 1354 * bnx2fc_hba_create - create a new bnx2fc hba 1355 * 1356 * @cnic: pointer to cnic device 1357 * 1358 * Creates a new FCoE hba on the given device. 1359 * 1360 */ 1361static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) 1362{ 1363 struct bnx2fc_hba *hba; 1364 struct fcoe_capabilities *fcoe_cap; 1365 int rc; 1366 1367 hba = kzalloc(sizeof(*hba), GFP_KERNEL); 1368 if (!hba) { 1369 printk(KERN_ERR PFX "Unable to allocate hba structure\n"); 1370 return NULL; 1371 } 1372 spin_lock_init(&hba->hba_lock); 1373 mutex_init(&hba->hba_mutex); 1374 mutex_init(&hba->hba_stats_mutex); 1375 1376 hba->cnic = cnic; 1377 1378 hba->max_tasks = cnic->max_fcoe_exchanges; 1379 hba->elstm_xids = (hba->max_tasks / 2); 1380 hba->max_outstanding_cmds = hba->elstm_xids; 1381 hba->max_xid = (hba->max_tasks - 1); 1382 1383 rc = bnx2fc_bind_pcidev(hba); 1384 if (rc) { 1385 printk(KERN_ERR PFX "create_adapter: bind error\n"); 1386 goto bind_err; 1387 } 1388 hba->phys_dev = cnic->netdev; 1389 hba->next_conn_id = 0; 1390 1391 hba->tgt_ofld_list = 1392 kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *), 1393 GFP_KERNEL); 1394 if (!hba->tgt_ofld_list) { 1395 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); 1396 goto tgtofld_err; 1397 } 1398 1399 hba->num_ofld_sess = 0; 1400 1401 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba); 1402 if (!hba->cmd_mgr) { 1403 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); 1404 goto cmgr_err; 1405 } 1406 fcoe_cap = &hba->fcoe_cap; 1407 1408 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << 1409 FCOE_IOS_PER_CONNECTION_SHIFT; 1410 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << 1411 FCOE_LOGINS_PER_PORT_SHIFT; 1412 fcoe_cap->capability2 = hba->max_outstanding_cmds << 1413 FCOE_NUMBER_OF_EXCHANGES_SHIFT; 1414 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << 1415 FCOE_NPIV_WWN_PER_PORT_SHIFT; 1416 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << 1417 FCOE_TARGETS_SUPPORTED_SHIFT; 1418 fcoe_cap->capability3 |= hba->max_outstanding_cmds << 1419 FCOE_OUTSTANDING_COMMANDS_SHIFT; 1420 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; 1421 1422 init_waitqueue_head(&hba->shutdown_wait); 1423 init_waitqueue_head(&hba->destroy_wait); 1424 INIT_LIST_HEAD(&hba->vports); 1425 1426 return hba; 1427 1428cmgr_err: 1429 kfree(hba->tgt_ofld_list); 1430tgtofld_err: 1431 bnx2fc_unbind_pcidev(hba); 1432bind_err: 1433 kfree(hba); 1434 return NULL; 1435} 1436 1437static struct bnx2fc_interface * 1438bnx2fc_interface_create(struct bnx2fc_hba *hba, 1439 struct net_device *netdev, 1440 enum fip_mode fip_mode) 1441{ 1442 struct fcoe_ctlr_device *ctlr_dev; 1443 struct bnx2fc_interface *interface; 1444 struct fcoe_ctlr *ctlr; 1445 int size; 1446 int rc = 0; 1447 1448 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); 1449 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, 1450 size); 1451 if (!ctlr_dev) { 1452 printk(KERN_ERR PFX "Unable to allocate interface structure\n"); 1453 return NULL; 1454 } 1455 ctlr = fcoe_ctlr_device_priv(ctlr_dev); 1456 ctlr->cdev = ctlr_dev; 1457 interface = fcoe_ctlr_priv(ctlr); 1458 dev_hold(netdev); 1459 kref_init(&interface->kref); 1460 interface->hba = hba; 1461 interface->netdev = netdev; 1462 1463 /* Initialize FIP */ 1464 fcoe_ctlr_init(ctlr, fip_mode); 1465 ctlr->send = bnx2fc_fip_send; 1466 ctlr->update_mac = bnx2fc_update_src_mac; 1467 ctlr->get_src_addr = bnx2fc_get_src_mac; 1468 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); 1469 1470 rc = bnx2fc_interface_setup(interface); 1471 if (!rc) 1472 return interface; 1473 1474 fcoe_ctlr_destroy(ctlr); 1475 dev_put(netdev); 1476 fcoe_ctlr_device_delete(ctlr_dev); 1477 return NULL; 1478} 1479 1480/** 1481 * bnx2fc_if_create - Create FCoE instance on a given interface 1482 * 1483 * @interface: FCoE interface to create a local port on 1484 * @parent: Device pointer to be the parent in sysfs for the SCSI host 1485 * @npiv: Indicates if the port is vport or not 1486 * 1487 * Creates a fc_lport instance and a Scsi_Host instance and configure them. 1488 * 1489 * Returns: Allocated fc_lport or an error pointer 1490 */ 1491static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 1492 struct device *parent, int npiv) 1493{ 1494 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1495 struct fc_lport *lport, *n_port; 1496 struct fcoe_port *port; 1497 struct Scsi_Host *shost; 1498 struct fc_vport *vport = dev_to_vport(parent); 1499 struct bnx2fc_lport *blport; 1500 struct bnx2fc_hba *hba = interface->hba; 1501 int rc = 0; 1502 1503 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); 1504 if (!blport) { 1505 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); 1506 return NULL; 1507 } 1508 1509 /* Allocate Scsi_Host structure */ 1510 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds; 1511 if (!npiv) 1512 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); 1513 else 1514 lport = libfc_vport_create(vport, sizeof(*port)); 1515 1516 if (!lport) { 1517 printk(KERN_ERR PFX "could not allocate scsi host structure\n"); 1518 goto free_blport; 1519 } 1520 shost = lport->host; 1521 port = lport_priv(lport); 1522 port->lport = lport; 1523 port->priv = interface; 1524 port->get_netdev = bnx2fc_netdev; 1525 1526 /* Configure fcoe_port */ 1527 rc = bnx2fc_lport_config(lport); 1528 if (rc) 1529 goto lp_config_err; 1530 1531 if (npiv) { 1532 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", 1533 vport->node_name, vport->port_name); 1534 fc_set_wwnn(lport, vport->node_name); 1535 fc_set_wwpn(lport, vport->port_name); 1536 } 1537 /* Configure netdev and networking properties of the lport */ 1538 rc = bnx2fc_net_config(lport, interface->netdev); 1539 if (rc) { 1540 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); 1541 goto lp_config_err; 1542 } 1543 1544 rc = bnx2fc_shost_config(lport, parent); 1545 if (rc) { 1546 printk(KERN_ERR PFX "Couldn't configure shost for %s\n", 1547 interface->netdev->name); 1548 goto lp_config_err; 1549 } 1550 1551 /* Initialize the libfc library */ 1552 rc = bnx2fc_libfc_config(lport); 1553 if (rc) { 1554 printk(KERN_ERR PFX "Couldn't configure libfc\n"); 1555 goto shost_err; 1556 } 1557 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1558 1559 if (bnx2fc_devloss_tmo) 1560 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo; 1561 1562 /* Allocate exchange manager */ 1563 if (!npiv) 1564 rc = bnx2fc_em_config(lport, hba); 1565 else { 1566 shost = vport_to_shost(vport); 1567 n_port = shost_priv(shost); 1568 rc = fc_exch_mgr_list_clone(n_port, lport); 1569 } 1570 1571 if (rc) { 1572 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); 1573 goto shost_err; 1574 } 1575 1576 bnx2fc_interface_get(interface); 1577 1578 spin_lock_bh(&hba->hba_lock); 1579 blport->lport = lport; 1580 list_add_tail(&blport->list, &hba->vports); 1581 spin_unlock_bh(&hba->hba_lock); 1582 1583 return lport; 1584 1585shost_err: 1586 scsi_remove_host(shost); 1587lp_config_err: 1588 scsi_host_put(lport->host); 1589free_blport: 1590 kfree(blport); 1591 return NULL; 1592} 1593 1594static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) 1595{ 1596 /* Dont listen for Ethernet packets anymore */ 1597 __dev_remove_pack(&interface->fcoe_packet_type); 1598 __dev_remove_pack(&interface->fip_packet_type); 1599 synchronize_net(); 1600} 1601 1602static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) 1603{ 1604 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1605 struct fc_lport *lport = ctlr->lp; 1606 struct fcoe_port *port = lport_priv(lport); 1607 struct bnx2fc_hba *hba = interface->hba; 1608 1609 /* Stop the transmit retry timer */ 1610 del_timer_sync(&port->timer); 1611 1612 /* Free existing transmit skbs */ 1613 fcoe_clean_pending_queue(lport); 1614 1615 bnx2fc_net_cleanup(interface); 1616 1617 bnx2fc_free_vport(hba, lport); 1618} 1619 1620static void bnx2fc_if_destroy(struct fc_lport *lport) 1621{ 1622 1623 /* Free queued packets for the receive thread */ 1624 bnx2fc_clean_rx_queue(lport); 1625 1626 /* Detach from scsi-ml */ 1627 fc_remove_host(lport->host); 1628 scsi_remove_host(lport->host); 1629 1630 /* 1631 * Note that only the physical lport will have the exchange manager. 1632 * for vports, this function is NOP 1633 */ 1634 fc_exch_mgr_free(lport); 1635 1636 /* Free memory used by statistical counters */ 1637 fc_lport_free_stats(lport); 1638 1639 /* Release Scsi_Host */ 1640 scsi_host_put(lport->host); 1641} 1642 1643static void __bnx2fc_destroy(struct bnx2fc_interface *interface) 1644{ 1645 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1646 struct fc_lport *lport = ctlr->lp; 1647 struct fcoe_port *port = lport_priv(lport); 1648 1649 bnx2fc_interface_cleanup(interface); 1650 bnx2fc_stop(interface); 1651 list_del(&interface->list); 1652 bnx2fc_port_destroy(port); 1653 bnx2fc_interface_put(interface); 1654} 1655 1656/** 1657 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface 1658 * 1659 * @netdev: The net device that the FCoE interface is on 1660 * 1661 * Called from sysfs. 1662 * 1663 * Returns: 0 for success 1664 */ 1665static int bnx2fc_destroy(struct net_device *netdev) 1666{ 1667 struct bnx2fc_interface *interface = NULL; 1668 struct workqueue_struct *timer_work_queue; 1669 struct fcoe_ctlr *ctlr; 1670 int rc = 0; 1671 1672 rtnl_lock(); 1673 mutex_lock(&bnx2fc_dev_lock); 1674 1675 interface = bnx2fc_interface_lookup(netdev); 1676 ctlr = bnx2fc_to_ctlr(interface); 1677 if (!interface || !ctlr->lp) { 1678 rc = -ENODEV; 1679 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); 1680 goto netdev_err; 1681 } 1682 1683 timer_work_queue = interface->timer_work_queue; 1684 __bnx2fc_destroy(interface); 1685 destroy_workqueue(timer_work_queue); 1686 1687netdev_err: 1688 mutex_unlock(&bnx2fc_dev_lock); 1689 rtnl_unlock(); 1690 return rc; 1691} 1692 1693static void bnx2fc_port_destroy(struct fcoe_port *port) 1694{ 1695 struct fc_lport *lport; 1696 1697 lport = port->lport; 1698 BNX2FC_HBA_DBG(lport, "Entered %s, destroying lport %p\n", __func__, lport); 1699 1700 bnx2fc_if_destroy(lport); 1701} 1702 1703static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) 1704{ 1705 bnx2fc_free_fw_resc(hba); 1706 bnx2fc_free_task_ctx(hba); 1707} 1708 1709/** 1710 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated 1711 * pci structure 1712 * 1713 * @hba: Adapter instance 1714 */ 1715static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) 1716{ 1717 if (bnx2fc_setup_task_ctx(hba)) 1718 goto mem_err; 1719 1720 if (bnx2fc_setup_fw_resc(hba)) 1721 goto mem_err; 1722 1723 return 0; 1724mem_err: 1725 bnx2fc_unbind_adapter_devices(hba); 1726 return -ENOMEM; 1727} 1728 1729static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) 1730{ 1731 struct cnic_dev *cnic; 1732 struct pci_dev *pdev; 1733 1734 if (!hba->cnic) { 1735 printk(KERN_ERR PFX "cnic is NULL\n"); 1736 return -ENODEV; 1737 } 1738 cnic = hba->cnic; 1739 pdev = hba->pcidev = cnic->pcidev; 1740 if (!hba->pcidev) 1741 return -ENODEV; 1742 1743 switch (pdev->device) { 1744 case PCI_DEVICE_ID_NX2_57710: 1745 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN); 1746 break; 1747 case PCI_DEVICE_ID_NX2_57711: 1748 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN); 1749 break; 1750 case PCI_DEVICE_ID_NX2_57712: 1751 case PCI_DEVICE_ID_NX2_57712_MF: 1752 case PCI_DEVICE_ID_NX2_57712_VF: 1753 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN); 1754 break; 1755 case PCI_DEVICE_ID_NX2_57800: 1756 case PCI_DEVICE_ID_NX2_57800_MF: 1757 case PCI_DEVICE_ID_NX2_57800_VF: 1758 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN); 1759 break; 1760 case PCI_DEVICE_ID_NX2_57810: 1761 case PCI_DEVICE_ID_NX2_57810_MF: 1762 case PCI_DEVICE_ID_NX2_57810_VF: 1763 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN); 1764 break; 1765 case PCI_DEVICE_ID_NX2_57840: 1766 case PCI_DEVICE_ID_NX2_57840_MF: 1767 case PCI_DEVICE_ID_NX2_57840_VF: 1768 case PCI_DEVICE_ID_NX2_57840_2_20: 1769 case PCI_DEVICE_ID_NX2_57840_4_10: 1770 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN); 1771 break; 1772 default: 1773 pr_err(PFX "Unknown device id 0x%x\n", pdev->device); 1774 break; 1775 } 1776 pci_dev_get(hba->pcidev); 1777 return 0; 1778} 1779 1780static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) 1781{ 1782 if (hba->pcidev) { 1783 hba->chip_num[0] = '\0'; 1784 pci_dev_put(hba->pcidev); 1785 } 1786 hba->pcidev = NULL; 1787} 1788 1789/** 1790 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats 1791 * 1792 * @handle: transport handle pointing to adapter struture 1793 */ 1794static int bnx2fc_ulp_get_stats(void *handle) 1795{ 1796 struct bnx2fc_hba *hba = handle; 1797 struct cnic_dev *cnic; 1798 struct fcoe_stats_info *stats_addr; 1799 1800 if (!hba) 1801 return -EINVAL; 1802 1803 cnic = hba->cnic; 1804 stats_addr = &cnic->stats_addr->fcoe_stat; 1805 if (!stats_addr) 1806 return -EINVAL; 1807 1808 strncpy(stats_addr->version, BNX2FC_VERSION, 1809 sizeof(stats_addr->version)); 1810 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX; 1811 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX; 1812 1813 return 0; 1814} 1815 1816 1817/** 1818 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance 1819 * 1820 * @handle: transport handle pointing to adapter structure 1821 * 1822 * This function maps adapter structure to pcidev structure and initiates 1823 * firmware handshake to enable/initialize on-chip FCoE components. 1824 * This bnx2fc - cnic interface api callback is used after following 1825 * conditions are met - 1826 * a) underlying network interface is up (marked by event NETDEV_UP 1827 * from netdev 1828 * b) bnx2fc adatper structure is registered. 1829 */ 1830static void bnx2fc_ulp_start(void *handle) 1831{ 1832 struct bnx2fc_hba *hba = handle; 1833 struct bnx2fc_interface *interface; 1834 struct fcoe_ctlr *ctlr; 1835 struct fc_lport *lport; 1836 1837 mutex_lock(&bnx2fc_dev_lock); 1838 1839 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1840 bnx2fc_fw_init(hba); 1841 1842 BNX2FC_MISC_DBG("bnx2fc started.\n"); 1843 1844 list_for_each_entry(interface, &if_list, list) { 1845 if (interface->hba == hba) { 1846 ctlr = bnx2fc_to_ctlr(interface); 1847 lport = ctlr->lp; 1848 /* Kick off Fabric discovery*/ 1849 printk(KERN_ERR PFX "ulp_init: start discovery\n"); 1850 lport->tt.frame_send = bnx2fc_xmit; 1851 bnx2fc_start_disc(interface); 1852 } 1853 } 1854 1855 mutex_unlock(&bnx2fc_dev_lock); 1856} 1857 1858static void bnx2fc_port_shutdown(struct fc_lport *lport) 1859{ 1860 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1861 fc_fabric_logoff(lport); 1862 fc_lport_destroy(lport); 1863} 1864 1865static void bnx2fc_stop(struct bnx2fc_interface *interface) 1866{ 1867 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1868 struct fc_lport *lport; 1869 struct fc_lport *vport; 1870 1871 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) 1872 return; 1873 1874 lport = ctlr->lp; 1875 bnx2fc_port_shutdown(lport); 1876 1877 mutex_lock(&lport->lp_mutex); 1878 list_for_each_entry(vport, &lport->vports, list) 1879 fc_host_port_type(vport->host) = 1880 FC_PORTTYPE_UNKNOWN; 1881 mutex_unlock(&lport->lp_mutex); 1882 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1883 fcoe_ctlr_link_down(ctlr); 1884 fcoe_clean_pending_queue(lport); 1885} 1886 1887static int bnx2fc_fw_init(struct bnx2fc_hba *hba) 1888{ 1889#define BNX2FC_INIT_POLL_TIME (1000 / HZ) 1890 int rc = -1; 1891 int i = HZ; 1892 1893 rc = bnx2fc_bind_adapter_devices(hba); 1894 if (rc) { 1895 printk(KERN_ALERT PFX 1896 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); 1897 goto err_out; 1898 } 1899 1900 rc = bnx2fc_send_fw_fcoe_init_msg(hba); 1901 if (rc) { 1902 printk(KERN_ALERT PFX 1903 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); 1904 goto err_unbind; 1905 } 1906 1907 /* 1908 * Wait until the adapter init message is complete, and adapter 1909 * state is UP. 1910 */ 1911 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) 1912 msleep(BNX2FC_INIT_POLL_TIME); 1913 1914 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { 1915 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " 1916 "Ignoring...\n", 1917 hba->cnic->netdev->name); 1918 rc = -1; 1919 goto err_unbind; 1920 } 1921 1922 1923 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); 1924 return 0; 1925 1926err_unbind: 1927 bnx2fc_unbind_adapter_devices(hba); 1928err_out: 1929 return rc; 1930} 1931 1932static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) 1933{ 1934 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { 1935 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { 1936 timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer, 1937 0); 1938 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + 1939 jiffies; 1940 add_timer(&hba->destroy_timer); 1941 wait_event_interruptible(hba->destroy_wait, 1942 test_bit(BNX2FC_FLAG_DESTROY_CMPL, 1943 &hba->flags)); 1944 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 1945 /* This should never happen */ 1946 if (signal_pending(current)) 1947 flush_signals(current); 1948 1949 del_timer_sync(&hba->destroy_timer); 1950 } 1951 bnx2fc_unbind_adapter_devices(hba); 1952 } 1953} 1954 1955/** 1956 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance 1957 * 1958 * @handle: transport handle pointing to adapter structure 1959 * 1960 * Driver checks if adapter is already in shutdown mode, if not start 1961 * the shutdown process. 1962 */ 1963static void bnx2fc_ulp_stop(void *handle) 1964{ 1965 struct bnx2fc_hba *hba = handle; 1966 struct bnx2fc_interface *interface; 1967 1968 printk(KERN_ERR "ULP_STOP\n"); 1969 1970 mutex_lock(&bnx2fc_dev_lock); 1971 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1972 goto exit; 1973 list_for_each_entry(interface, &if_list, list) { 1974 if (interface->hba == hba) 1975 bnx2fc_stop(interface); 1976 } 1977 BUG_ON(hba->num_ofld_sess != 0); 1978 1979 mutex_lock(&hba->hba_mutex); 1980 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 1981 clear_bit(ADAPTER_STATE_GOING_DOWN, 1982 &hba->adapter_state); 1983 1984 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 1985 mutex_unlock(&hba->hba_mutex); 1986 1987 bnx2fc_fw_destroy(hba); 1988exit: 1989 mutex_unlock(&bnx2fc_dev_lock); 1990} 1991 1992static void bnx2fc_start_disc(struct bnx2fc_interface *interface) 1993{ 1994 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1995 struct fc_lport *lport; 1996 int wait_cnt = 0; 1997 1998 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1999 /* Kick off FIP/FLOGI */ 2000 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 2001 printk(KERN_ERR PFX "Init not done yet\n"); 2002 return; 2003 } 2004 2005 lport = ctlr->lp; 2006 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); 2007 2008 if (!bnx2fc_link_ok(lport) && interface->enabled) { 2009 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); 2010 fcoe_ctlr_link_up(ctlr); 2011 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2012 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2013 } 2014 2015 /* wait for the FCF to be selected before issuing FLOGI */ 2016 while (!ctlr->sel_fcf) { 2017 msleep(250); 2018 /* give up after 3 secs */ 2019 if (++wait_cnt > 12) 2020 break; 2021 } 2022 2023 /* Reset max receive frame size to default */ 2024 if (fc_set_mfs(lport, BNX2FC_MFS)) 2025 return; 2026 2027 fc_lport_init(lport); 2028 fc_fabric_login(lport); 2029} 2030 2031 2032/** 2033 * bnx2fc_ulp_init - Initialize an adapter instance 2034 * 2035 * @dev : cnic device handle 2036 * Called from cnic_register_driver() context to initialize all 2037 * enumerated cnic devices. This routine allocates adapter structure 2038 * and other device specific resources. 2039 */ 2040static void bnx2fc_ulp_init(struct cnic_dev *dev) 2041{ 2042 struct bnx2fc_hba *hba; 2043 int rc = 0; 2044 2045 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2046 /* bnx2fc works only when bnx2x is loaded */ 2047 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || 2048 (dev->max_fcoe_conn == 0)) { 2049 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," 2050 " flags: %lx fcoe_conn: %d\n", 2051 dev->netdev->name, dev->flags, dev->max_fcoe_conn); 2052 return; 2053 } 2054 2055 hba = bnx2fc_hba_create(dev); 2056 if (!hba) { 2057 printk(KERN_ERR PFX "hba initialization failed\n"); 2058 return; 2059 } 2060 2061 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name); 2062 2063 /* Add HBA to the adapter list */ 2064 mutex_lock(&bnx2fc_dev_lock); 2065 list_add_tail(&hba->list, &adapter_list); 2066 adapter_count++; 2067 mutex_unlock(&bnx2fc_dev_lock); 2068 2069 dev->fcoe_cap = &hba->fcoe_cap; 2070 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2071 rc = dev->register_device(dev, CNIC_ULP_FCOE, 2072 (void *) hba); 2073 if (rc) 2074 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); 2075 else 2076 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2077} 2078 2079/* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */ 2080static int __bnx2fc_disable(struct fcoe_ctlr *ctlr) 2081{ 2082 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2083 2084 if (interface->enabled == true) { 2085 if (!ctlr->lp) { 2086 pr_err(PFX "__bnx2fc_disable: lport not found\n"); 2087 return -ENODEV; 2088 } else { 2089 interface->enabled = false; 2090 fcoe_ctlr_link_down(ctlr); 2091 fcoe_clean_pending_queue(ctlr->lp); 2092 } 2093 } 2094 return 0; 2095} 2096 2097/* 2098 * Deperecated: Use bnx2fc_enabled() 2099 */ 2100static int bnx2fc_disable(struct net_device *netdev) 2101{ 2102 struct bnx2fc_interface *interface; 2103 struct fcoe_ctlr *ctlr; 2104 int rc = 0; 2105 2106 rtnl_lock(); 2107 mutex_lock(&bnx2fc_dev_lock); 2108 2109 interface = bnx2fc_interface_lookup(netdev); 2110 ctlr = bnx2fc_to_ctlr(interface); 2111 2112 if (!interface) { 2113 rc = -ENODEV; 2114 pr_err(PFX "bnx2fc_disable: interface not found\n"); 2115 } else { 2116 rc = __bnx2fc_disable(ctlr); 2117 } 2118 mutex_unlock(&bnx2fc_dev_lock); 2119 rtnl_unlock(); 2120 return rc; 2121} 2122 2123static uint bnx2fc_npiv_create_vports(struct fc_lport *lport, 2124 struct cnic_fc_npiv_tbl *npiv_tbl) 2125{ 2126 struct fc_vport_identifiers vpid; 2127 uint i, created = 0; 2128 u64 wwnn = 0; 2129 char wwpn_str[32]; 2130 char wwnn_str[32]; 2131 2132 if (npiv_tbl->count > MAX_NPIV_ENTRIES) { 2133 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n"); 2134 goto done; 2135 } 2136 2137 /* Sanity check the first entry to make sure it's not 0 */ 2138 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 && 2139 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) { 2140 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n"); 2141 goto done; 2142 } 2143 2144 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR; 2145 vpid.vport_type = FC_PORTTYPE_NPIV; 2146 vpid.disable = false; 2147 2148 for (i = 0; i < npiv_tbl->count; i++) { 2149 wwnn = wwn_to_u64(npiv_tbl->wwnn[i]); 2150 if (wwnn == 0) { 2151 /* 2152 * If we get a 0 element from for the WWNN then assume 2153 * the WWNN should be the same as the physical port. 2154 */ 2155 wwnn = lport->wwnn; 2156 } 2157 vpid.node_name = wwnn; 2158 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]); 2159 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name), 2160 "NPIV[%u]:%016llx-%016llx", 2161 created, vpid.port_name, vpid.node_name); 2162 fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str)); 2163 fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str)); 2164 BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str, 2165 wwpn_str); 2166 if (fc_vport_create(lport->host, 0, &vpid)) 2167 created++; 2168 else 2169 BNX2FC_HBA_DBG(lport, "Failed to create vport\n"); 2170 } 2171done: 2172 return created; 2173} 2174 2175static int __bnx2fc_enable(struct fcoe_ctlr *ctlr) 2176{ 2177 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2178 struct bnx2fc_hba *hba; 2179 struct cnic_fc_npiv_tbl *npiv_tbl; 2180 struct fc_lport *lport; 2181 2182 if (interface->enabled == false) { 2183 if (!ctlr->lp) { 2184 pr_err(PFX "__bnx2fc_enable: lport not found\n"); 2185 return -ENODEV; 2186 } else if (!bnx2fc_link_ok(ctlr->lp)) { 2187 fcoe_ctlr_link_up(ctlr); 2188 interface->enabled = true; 2189 } 2190 } 2191 2192 /* Create static NPIV ports if any are contained in NVRAM */ 2193 hba = interface->hba; 2194 lport = ctlr->lp; 2195 2196 if (!hba) 2197 goto done; 2198 2199 if (!hba->cnic) 2200 goto done; 2201 2202 if (!lport) 2203 goto done; 2204 2205 if (!lport->host) 2206 goto done; 2207 2208 if (!hba->cnic->get_fc_npiv_tbl) 2209 goto done; 2210 2211 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL); 2212 if (!npiv_tbl) 2213 goto done; 2214 2215 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl)) 2216 goto done_free; 2217 2218 bnx2fc_npiv_create_vports(lport, npiv_tbl); 2219done_free: 2220 kfree(npiv_tbl); 2221done: 2222 return 0; 2223} 2224 2225/* 2226 * Deprecated: Use bnx2fc_enabled() 2227 */ 2228static int bnx2fc_enable(struct net_device *netdev) 2229{ 2230 struct bnx2fc_interface *interface; 2231 struct fcoe_ctlr *ctlr; 2232 int rc = 0; 2233 2234 rtnl_lock(); 2235 mutex_lock(&bnx2fc_dev_lock); 2236 2237 interface = bnx2fc_interface_lookup(netdev); 2238 ctlr = bnx2fc_to_ctlr(interface); 2239 if (!interface) { 2240 rc = -ENODEV; 2241 pr_err(PFX "bnx2fc_enable: interface not found\n"); 2242 } else { 2243 rc = __bnx2fc_enable(ctlr); 2244 } 2245 2246 mutex_unlock(&bnx2fc_dev_lock); 2247 rtnl_unlock(); 2248 return rc; 2249} 2250 2251/** 2252 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller 2253 * @cdev: The FCoE Controller that is being enabled or disabled 2254 * 2255 * fcoe_sysfs will ensure that the state of 'enabled' has 2256 * changed, so no checking is necessary here. This routine simply 2257 * calls fcoe_enable or fcoe_disable, both of which are deprecated. 2258 * When those routines are removed the functionality can be merged 2259 * here. 2260 */ 2261static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev) 2262{ 2263 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); 2264 2265 switch (cdev->enabled) { 2266 case FCOE_CTLR_ENABLED: 2267 return __bnx2fc_enable(ctlr); 2268 case FCOE_CTLR_DISABLED: 2269 return __bnx2fc_disable(ctlr); 2270 case FCOE_CTLR_UNUSED: 2271 default: 2272 return -ENOTSUPP; 2273 }; 2274} 2275 2276enum bnx2fc_create_link_state { 2277 BNX2FC_CREATE_LINK_DOWN, 2278 BNX2FC_CREATE_LINK_UP, 2279}; 2280 2281/** 2282 * _bnx2fc_create() - Create bnx2fc FCoE interface 2283 * @netdev : The net_device object the Ethernet interface to create on 2284 * @fip_mode: The FIP mode for this creation 2285 * @link_state: The ctlr link state on creation 2286 * 2287 * Called from either the libfcoe 'create' module parameter 2288 * via fcoe_create or from fcoe_syfs's ctlr_create file. 2289 * 2290 * libfcoe's 'create' module parameter is deprecated so some 2291 * consolidation of code can be done when that interface is 2292 * removed. 2293 * 2294 * Returns: 0 for success 2295 */ 2296static int _bnx2fc_create(struct net_device *netdev, 2297 enum fip_mode fip_mode, 2298 enum bnx2fc_create_link_state link_state) 2299{ 2300 struct fcoe_ctlr_device *cdev; 2301 struct fcoe_ctlr *ctlr; 2302 struct bnx2fc_interface *interface; 2303 struct bnx2fc_hba *hba; 2304 struct net_device *phys_dev = netdev; 2305 struct fc_lport *lport; 2306 struct ethtool_drvinfo drvinfo; 2307 int rc = 0; 2308 int vlan_id = 0; 2309 2310 BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); 2311 if (fip_mode != FIP_MODE_FABRIC) { 2312 printk(KERN_ERR "fip mode not FABRIC\n"); 2313 return -EIO; 2314 } 2315 2316 rtnl_lock(); 2317 2318 mutex_lock(&bnx2fc_dev_lock); 2319 2320 if (!try_module_get(THIS_MODULE)) { 2321 rc = -EINVAL; 2322 goto mod_err; 2323 } 2324 2325 /* obtain physical netdev */ 2326 if (is_vlan_dev(netdev)) 2327 phys_dev = vlan_dev_real_dev(netdev); 2328 2329 /* verify if the physical device is a netxtreme2 device */ 2330 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { 2331 memset(&drvinfo, 0, sizeof(drvinfo)); 2332 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); 2333 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { 2334 printk(KERN_ERR PFX "Not a netxtreme2 device\n"); 2335 rc = -EINVAL; 2336 goto netdev_err; 2337 } 2338 } else { 2339 printk(KERN_ERR PFX "unable to obtain drv_info\n"); 2340 rc = -EINVAL; 2341 goto netdev_err; 2342 } 2343 2344 /* obtain interface and initialize rest of the structure */ 2345 hba = bnx2fc_hba_lookup(phys_dev); 2346 if (!hba) { 2347 rc = -ENODEV; 2348 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); 2349 goto netdev_err; 2350 } 2351 2352 if (bnx2fc_interface_lookup(netdev)) { 2353 rc = -EEXIST; 2354 goto netdev_err; 2355 } 2356 2357 interface = bnx2fc_interface_create(hba, netdev, fip_mode); 2358 if (!interface) { 2359 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); 2360 rc = -ENOMEM; 2361 goto netdev_err; 2362 } 2363 2364 if (is_vlan_dev(netdev)) { 2365 vlan_id = vlan_dev_vlan_id(netdev); 2366 interface->vlan_enabled = 1; 2367 } 2368 2369 ctlr = bnx2fc_to_ctlr(interface); 2370 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 2371 interface->vlan_id = vlan_id; 2372 interface->tm_timeout = BNX2FC_TM_TIMEOUT; 2373 2374 interface->timer_work_queue = 2375 create_singlethread_workqueue("bnx2fc_timer_wq"); 2376 if (!interface->timer_work_queue) { 2377 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); 2378 rc = -EINVAL; 2379 goto ifput_err; 2380 } 2381 2382 lport = bnx2fc_if_create(interface, &cdev->dev, 0); 2383 if (!lport) { 2384 printk(KERN_ERR PFX "Failed to create interface (%s)\n", 2385 netdev->name); 2386 rc = -EINVAL; 2387 goto if_create_err; 2388 } 2389 2390 /* Add interface to if_list */ 2391 list_add_tail(&interface->list, &if_list); 2392 2393 lport->boot_time = jiffies; 2394 2395 /* Make this master N_port */ 2396 ctlr->lp = lport; 2397 2398 if (link_state == BNX2FC_CREATE_LINK_UP) 2399 cdev->enabled = FCOE_CTLR_ENABLED; 2400 else 2401 cdev->enabled = FCOE_CTLR_DISABLED; 2402 2403 if (link_state == BNX2FC_CREATE_LINK_UP && 2404 !bnx2fc_link_ok(lport)) { 2405 fcoe_ctlr_link_up(ctlr); 2406 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2407 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2408 } 2409 2410 BNX2FC_HBA_DBG(lport, "create: START DISC\n"); 2411 bnx2fc_start_disc(interface); 2412 2413 if (link_state == BNX2FC_CREATE_LINK_UP) 2414 interface->enabled = true; 2415 2416 /* 2417 * Release from kref_init in bnx2fc_interface_setup, on success 2418 * lport should be holding a reference taken in bnx2fc_if_create 2419 */ 2420 bnx2fc_interface_put(interface); 2421 /* put netdev that was held while calling dev_get_by_name */ 2422 mutex_unlock(&bnx2fc_dev_lock); 2423 rtnl_unlock(); 2424 return 0; 2425 2426if_create_err: 2427 destroy_workqueue(interface->timer_work_queue); 2428ifput_err: 2429 bnx2fc_net_cleanup(interface); 2430 bnx2fc_interface_put(interface); 2431 goto mod_err; 2432netdev_err: 2433 module_put(THIS_MODULE); 2434mod_err: 2435 mutex_unlock(&bnx2fc_dev_lock); 2436 rtnl_unlock(); 2437 return rc; 2438} 2439 2440/** 2441 * bnx2fc_create() - Create a bnx2fc interface 2442 * @netdev : The net_device object the Ethernet interface to create on 2443 * @fip_mode: The FIP mode for this creation 2444 * 2445 * Called from fcoe transport 2446 * 2447 * Returns: 0 for success 2448 */ 2449static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode) 2450{ 2451 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP); 2452} 2453 2454/** 2455 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs 2456 * @netdev: The net_device to be used by the allocated FCoE Controller 2457 * 2458 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr 2459 * in a link_down state. The allows the user an opportunity to configure 2460 * the FCoE Controller from sysfs before enabling the FCoE Controller. 2461 * 2462 * Creating in with this routine starts the FCoE Controller in Fabric 2463 * mode. The user can change to VN2VN or another mode before enabling. 2464 */ 2465static int bnx2fc_ctlr_alloc(struct net_device *netdev) 2466{ 2467 return _bnx2fc_create(netdev, FIP_MODE_FABRIC, 2468 BNX2FC_CREATE_LINK_DOWN); 2469} 2470 2471/** 2472 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance 2473 * 2474 * @cnic: Pointer to cnic device instance 2475 * 2476 **/ 2477static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) 2478{ 2479 struct bnx2fc_hba *hba; 2480 2481 /* Called with bnx2fc_dev_lock held */ 2482 list_for_each_entry(hba, &adapter_list, list) { 2483 if (hba->cnic == cnic) 2484 return hba; 2485 } 2486 return NULL; 2487} 2488 2489static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 2490 *netdev) 2491{ 2492 struct bnx2fc_interface *interface; 2493 2494 /* Called with bnx2fc_dev_lock held */ 2495 list_for_each_entry(interface, &if_list, list) { 2496 if (interface->netdev == netdev) 2497 return interface; 2498 } 2499 return NULL; 2500} 2501 2502static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device 2503 *phys_dev) 2504{ 2505 struct bnx2fc_hba *hba; 2506 2507 /* Called with bnx2fc_dev_lock held */ 2508 list_for_each_entry(hba, &adapter_list, list) { 2509 if (hba->phys_dev == phys_dev) 2510 return hba; 2511 } 2512 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); 2513 return NULL; 2514} 2515 2516/** 2517 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources 2518 * 2519 * @dev: cnic device handle 2520 */ 2521static void bnx2fc_ulp_exit(struct cnic_dev *dev) 2522{ 2523 struct bnx2fc_hba *hba; 2524 struct bnx2fc_interface *interface, *tmp; 2525 2526 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); 2527 2528 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { 2529 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", 2530 dev->netdev->name, dev->flags); 2531 return; 2532 } 2533 2534 mutex_lock(&bnx2fc_dev_lock); 2535 hba = bnx2fc_find_hba_for_cnic(dev); 2536 if (!hba) { 2537 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", 2538 dev); 2539 mutex_unlock(&bnx2fc_dev_lock); 2540 return; 2541 } 2542 2543 list_del_init(&hba->list); 2544 adapter_count--; 2545 2546 list_for_each_entry_safe(interface, tmp, &if_list, list) 2547 /* destroy not called yet, move to quiesced list */ 2548 if (interface->hba == hba) 2549 __bnx2fc_destroy(interface); 2550 mutex_unlock(&bnx2fc_dev_lock); 2551 2552 bnx2fc_ulp_stop(hba); 2553 /* unregister cnic device */ 2554 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) 2555 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); 2556 bnx2fc_hba_destroy(hba); 2557} 2558 2559static void bnx2fc_rport_terminate_io(struct fc_rport *rport) 2560{ 2561 /* This is a no-op */ 2562} 2563 2564/** 2565 * bnx2fc_fcoe_reset - Resets the fcoe 2566 * 2567 * @shost: shost the reset is from 2568 * 2569 * Returns: always 0 2570 */ 2571static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) 2572{ 2573 struct fc_lport *lport = shost_priv(shost); 2574 fc_lport_reset(lport); 2575 return 0; 2576} 2577 2578 2579static bool bnx2fc_match(struct net_device *netdev) 2580{ 2581 struct net_device *phys_dev = netdev; 2582 2583 mutex_lock(&bnx2fc_dev_lock); 2584 if (is_vlan_dev(netdev)) 2585 phys_dev = vlan_dev_real_dev(netdev); 2586 2587 if (bnx2fc_hba_lookup(phys_dev)) { 2588 mutex_unlock(&bnx2fc_dev_lock); 2589 return true; 2590 } 2591 2592 mutex_unlock(&bnx2fc_dev_lock); 2593 return false; 2594} 2595 2596 2597static struct fcoe_transport bnx2fc_transport = { 2598 .name = {"bnx2fc"}, 2599 .attached = false, 2600 .list = LIST_HEAD_INIT(bnx2fc_transport.list), 2601 .alloc = bnx2fc_ctlr_alloc, 2602 .match = bnx2fc_match, 2603 .create = bnx2fc_create, 2604 .destroy = bnx2fc_destroy, 2605 .enable = bnx2fc_enable, 2606 .disable = bnx2fc_disable, 2607}; 2608 2609/** 2610 * bnx2fc_cpu_online - Create a receive thread for an online CPU 2611 * 2612 * @cpu: cpu index for the online cpu 2613 */ 2614static int bnx2fc_cpu_online(unsigned int cpu) 2615{ 2616 struct bnx2fc_percpu_s *p; 2617 struct task_struct *thread; 2618 2619 p = &per_cpu(bnx2fc_percpu, cpu); 2620 2621 thread = kthread_create_on_node(bnx2fc_percpu_io_thread, 2622 (void *)p, cpu_to_node(cpu), 2623 "bnx2fc_thread/%d", cpu); 2624 if (IS_ERR(thread)) 2625 return PTR_ERR(thread); 2626 2627 /* bind thread to the cpu */ 2628 kthread_bind(thread, cpu); 2629 p->iothread = thread; 2630 wake_up_process(thread); 2631 return 0; 2632} 2633 2634static int bnx2fc_cpu_offline(unsigned int cpu) 2635{ 2636 struct bnx2fc_percpu_s *p; 2637 struct task_struct *thread; 2638 struct bnx2fc_work *work, *tmp; 2639 2640 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); 2641 2642 /* Prevent any new work from being queued for this CPU */ 2643 p = &per_cpu(bnx2fc_percpu, cpu); 2644 spin_lock_bh(&p->fp_work_lock); 2645 thread = p->iothread; 2646 p->iothread = NULL; 2647 2648 /* Free all work in the list */ 2649 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 2650 list_del_init(&work->list); 2651 bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data, 2652 work->num_rq, work->task); 2653 kfree(work); 2654 } 2655 2656 spin_unlock_bh(&p->fp_work_lock); 2657 2658 if (thread) 2659 kthread_stop(thread); 2660 return 0; 2661} 2662 2663static int bnx2fc_slave_configure(struct scsi_device *sdev) 2664{ 2665 if (!bnx2fc_queue_depth) 2666 return 0; 2667 2668 scsi_change_queue_depth(sdev, bnx2fc_queue_depth); 2669 return 0; 2670} 2671 2672static enum cpuhp_state bnx2fc_online_state; 2673 2674/** 2675 * bnx2fc_mod_init - module init entry point 2676 * 2677 * Initialize driver wide global data structures, and register 2678 * with cnic module 2679 **/ 2680static int __init bnx2fc_mod_init(void) 2681{ 2682 struct fcoe_percpu_s *bg; 2683 struct task_struct *l2_thread; 2684 int rc = 0; 2685 unsigned int cpu = 0; 2686 struct bnx2fc_percpu_s *p; 2687 2688 printk(KERN_INFO PFX "%s", version); 2689 2690 /* register as a fcoe transport */ 2691 rc = fcoe_transport_attach(&bnx2fc_transport); 2692 if (rc) { 2693 printk(KERN_ERR "failed to register an fcoe transport, check " 2694 "if libfcoe is loaded\n"); 2695 goto out; 2696 } 2697 2698 INIT_LIST_HEAD(&adapter_list); 2699 INIT_LIST_HEAD(&if_list); 2700 mutex_init(&bnx2fc_dev_lock); 2701 adapter_count = 0; 2702 2703 /* Attach FC transport template */ 2704 rc = bnx2fc_attach_transport(); 2705 if (rc) 2706 goto detach_ft; 2707 2708 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); 2709 if (!bnx2fc_wq) { 2710 rc = -ENOMEM; 2711 goto release_bt; 2712 } 2713 2714 bg = &bnx2fc_global; 2715 skb_queue_head_init(&bg->fcoe_rx_list); 2716 l2_thread = kthread_create(bnx2fc_l2_rcv_thread, 2717 (void *)bg, 2718 "bnx2fc_l2_thread"); 2719 if (IS_ERR(l2_thread)) { 2720 rc = PTR_ERR(l2_thread); 2721 goto free_wq; 2722 } 2723 wake_up_process(l2_thread); 2724 spin_lock_bh(&bg->fcoe_rx_list.lock); 2725 bg->kthread = l2_thread; 2726 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2727 2728 for_each_possible_cpu(cpu) { 2729 p = &per_cpu(bnx2fc_percpu, cpu); 2730 INIT_LIST_HEAD(&p->work_list); 2731 spin_lock_init(&p->fp_work_lock); 2732 } 2733 2734 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online", 2735 bnx2fc_cpu_online, bnx2fc_cpu_offline); 2736 if (rc < 0) 2737 goto stop_thread; 2738 bnx2fc_online_state = rc; 2739 2740 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); 2741 return 0; 2742 2743stop_thread: 2744 kthread_stop(l2_thread); 2745free_wq: 2746 destroy_workqueue(bnx2fc_wq); 2747release_bt: 2748 bnx2fc_release_transport(); 2749detach_ft: 2750 fcoe_transport_detach(&bnx2fc_transport); 2751out: 2752 return rc; 2753} 2754 2755static void __exit bnx2fc_mod_exit(void) 2756{ 2757 LIST_HEAD(to_be_deleted); 2758 struct bnx2fc_hba *hba, *next; 2759 struct fcoe_percpu_s *bg; 2760 struct task_struct *l2_thread; 2761 struct sk_buff *skb; 2762 2763 /* 2764 * NOTE: Since cnic calls register_driver routine rtnl_lock, 2765 * it will have higher precedence than bnx2fc_dev_lock. 2766 * unregister_device() cannot be called with bnx2fc_dev_lock 2767 * held. 2768 */ 2769 mutex_lock(&bnx2fc_dev_lock); 2770 list_splice_init(&adapter_list, &to_be_deleted); 2771 adapter_count = 0; 2772 mutex_unlock(&bnx2fc_dev_lock); 2773 2774 /* Unregister with cnic */ 2775 list_for_each_entry_safe(hba, next, &to_be_deleted, list) { 2776 list_del_init(&hba->list); 2777 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", 2778 hba); 2779 bnx2fc_ulp_stop(hba); 2780 /* unregister cnic device */ 2781 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, 2782 &hba->reg_with_cnic)) 2783 hba->cnic->unregister_device(hba->cnic, 2784 CNIC_ULP_FCOE); 2785 bnx2fc_hba_destroy(hba); 2786 } 2787 cnic_unregister_driver(CNIC_ULP_FCOE); 2788 2789 /* Destroy global thread */ 2790 bg = &bnx2fc_global; 2791 spin_lock_bh(&bg->fcoe_rx_list.lock); 2792 l2_thread = bg->kthread; 2793 bg->kthread = NULL; 2794 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) 2795 kfree_skb(skb); 2796 2797 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2798 2799 if (l2_thread) 2800 kthread_stop(l2_thread); 2801 2802 cpuhp_remove_state(bnx2fc_online_state); 2803 2804 destroy_workqueue(bnx2fc_wq); 2805 /* 2806 * detach from scsi transport 2807 * must happen after all destroys are done 2808 */ 2809 bnx2fc_release_transport(); 2810 2811 /* detach from fcoe transport */ 2812 fcoe_transport_detach(&bnx2fc_transport); 2813} 2814 2815module_init(bnx2fc_mod_init); 2816module_exit(bnx2fc_mod_exit); 2817 2818static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { 2819 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, 2820 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, 2821 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, 2822 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, 2823 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, 2824 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, 2825 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, 2826 2827 .get_fcoe_fcf_selected = fcoe_fcf_get_selected, 2828 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, 2829}; 2830 2831static struct fc_function_template bnx2fc_transport_function = { 2832 .show_host_node_name = 1, 2833 .show_host_port_name = 1, 2834 .show_host_supported_classes = 1, 2835 .show_host_supported_fc4s = 1, 2836 .show_host_active_fc4s = 1, 2837 .show_host_maxframe_size = 1, 2838 2839 .show_host_port_id = 1, 2840 .show_host_supported_speeds = 1, 2841 .get_host_speed = fc_get_host_speed, 2842 .show_host_speed = 1, 2843 .show_host_port_type = 1, 2844 .get_host_port_state = fc_get_host_port_state, 2845 .show_host_port_state = 1, 2846 .show_host_symbolic_name = 1, 2847 2848 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2849 sizeof(struct bnx2fc_rport)), 2850 .show_rport_maxframe_size = 1, 2851 .show_rport_supported_classes = 1, 2852 2853 .show_host_fabric_name = 1, 2854 .show_starget_node_name = 1, 2855 .show_starget_port_name = 1, 2856 .show_starget_port_id = 1, 2857 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2858 .show_rport_dev_loss_tmo = 1, 2859 .get_fc_host_stats = bnx2fc_get_host_stats, 2860 2861 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2862 2863 .terminate_rport_io = bnx2fc_rport_terminate_io, 2864 2865 .vport_create = bnx2fc_vport_create, 2866 .vport_delete = bnx2fc_vport_destroy, 2867 .vport_disable = bnx2fc_vport_disable, 2868 .bsg_request = fc_lport_bsg_request, 2869}; 2870 2871static struct fc_function_template bnx2fc_vport_xport_function = { 2872 .show_host_node_name = 1, 2873 .show_host_port_name = 1, 2874 .show_host_supported_classes = 1, 2875 .show_host_supported_fc4s = 1, 2876 .show_host_active_fc4s = 1, 2877 .show_host_maxframe_size = 1, 2878 2879 .show_host_port_id = 1, 2880 .show_host_supported_speeds = 1, 2881 .get_host_speed = fc_get_host_speed, 2882 .show_host_speed = 1, 2883 .show_host_port_type = 1, 2884 .get_host_port_state = fc_get_host_port_state, 2885 .show_host_port_state = 1, 2886 .show_host_symbolic_name = 1, 2887 2888 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2889 sizeof(struct bnx2fc_rport)), 2890 .show_rport_maxframe_size = 1, 2891 .show_rport_supported_classes = 1, 2892 2893 .show_host_fabric_name = 1, 2894 .show_starget_node_name = 1, 2895 .show_starget_port_name = 1, 2896 .show_starget_port_id = 1, 2897 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2898 .show_rport_dev_loss_tmo = 1, 2899 .get_fc_host_stats = fc_get_host_stats, 2900 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2901 .terminate_rport_io = fc_rport_terminate_io, 2902 .bsg_request = fc_lport_bsg_request, 2903}; 2904 2905/* 2906 * Additional scsi_host attributes. 2907 */ 2908static ssize_t 2909bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr, 2910 char *buf) 2911{ 2912 struct Scsi_Host *shost = class_to_shost(dev); 2913 struct fc_lport *lport = shost_priv(shost); 2914 struct fcoe_port *port = lport_priv(lport); 2915 struct bnx2fc_interface *interface = port->priv; 2916 2917 sprintf(buf, "%u\n", interface->tm_timeout); 2918 return strlen(buf); 2919} 2920 2921static ssize_t 2922bnx2fc_tm_timeout_store(struct device *dev, 2923 struct device_attribute *attr, const char *buf, size_t count) 2924{ 2925 struct Scsi_Host *shost = class_to_shost(dev); 2926 struct fc_lport *lport = shost_priv(shost); 2927 struct fcoe_port *port = lport_priv(lport); 2928 struct bnx2fc_interface *interface = port->priv; 2929 int rval, val; 2930 2931 rval = kstrtouint(buf, 10, &val); 2932 if (rval) 2933 return rval; 2934 if (val > 255) 2935 return -ERANGE; 2936 2937 interface->tm_timeout = (u8)val; 2938 return strlen(buf); 2939} 2940 2941static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show, 2942 bnx2fc_tm_timeout_store); 2943 2944static struct device_attribute *bnx2fc_host_attrs[] = { 2945 &dev_attr_tm_timeout, 2946 NULL, 2947}; 2948 2949/* 2950 * scsi_host_template structure used while registering with SCSI-ml 2951 */ 2952static struct scsi_host_template bnx2fc_shost_template = { 2953 .module = THIS_MODULE, 2954 .name = "QLogic Offload FCoE Initiator", 2955 .queuecommand = bnx2fc_queuecommand, 2956 .eh_timed_out = fc_eh_timed_out, 2957 .eh_abort_handler = bnx2fc_eh_abort, /* abts */ 2958 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ 2959 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ 2960 .eh_host_reset_handler = fc_eh_host_reset, 2961 .slave_alloc = fc_slave_alloc, 2962 .change_queue_depth = scsi_change_queue_depth, 2963 .this_id = -1, 2964 .cmd_per_lun = 3, 2965 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, 2966 .dma_boundary = 0x7fff, 2967 .max_sectors = 0x3fbf, 2968 .track_queue_depth = 1, 2969 .slave_configure = bnx2fc_slave_configure, 2970 .shost_attrs = bnx2fc_host_attrs, 2971}; 2972 2973static struct libfc_function_template bnx2fc_libfc_fcn_templ = { 2974 .frame_send = bnx2fc_xmit, 2975 .elsct_send = bnx2fc_elsct_send, 2976 .fcp_abort_io = bnx2fc_abort_io, 2977 .fcp_cleanup = bnx2fc_cleanup, 2978 .get_lesb = fcoe_get_lesb, 2979 .rport_event_callback = bnx2fc_rport_event_handler, 2980}; 2981 2982/* 2983 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface 2984 * structure carrying callback function pointers 2985 */ 2986static struct cnic_ulp_ops bnx2fc_cnic_cb = { 2987 .owner = THIS_MODULE, 2988 .cnic_init = bnx2fc_ulp_init, 2989 .cnic_exit = bnx2fc_ulp_exit, 2990 .cnic_start = bnx2fc_ulp_start, 2991 .cnic_stop = bnx2fc_ulp_stop, 2992 .indicate_kcqes = bnx2fc_indicate_kcqe, 2993 .indicate_netevent = bnx2fc_indicate_netevent, 2994 .cnic_get_stats = bnx2fc_ulp_get_stats, 2995}; 2996