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)) + 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 */ 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 fcoe_rcv_info *fr; 432 struct fcoe_percpu_s *bg; 433 struct sk_buff *tmp_skb; 434 435 interface = container_of(ptype, struct bnx2fc_interface, 436 fcoe_packet_type); 437 ctlr = bnx2fc_to_ctlr(interface); 438 lport = ctlr->lp; 439 440 if (unlikely(lport == NULL)) { 441 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n"); 442 goto err; 443 } 444 445 tmp_skb = skb_share_check(skb, GFP_ATOMIC); 446 if (!tmp_skb) 447 goto err; 448 449 skb = tmp_skb; 450 451 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { 452 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n"); 453 goto err; 454 } 455 456 /* 457 * Check for minimum frame length, and make sure required FCoE 458 * and FC headers are pulled into the linear data area. 459 */ 460 if (unlikely((skb->len < FCOE_MIN_FRAME) || 461 !pskb_may_pull(skb, FCOE_HEADER_LEN))) 462 goto err; 463 464 skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); 465 466 fr = fcoe_dev_from_skb(skb); 467 fr->fr_dev = lport; 468 469 bg = &bnx2fc_global; 470 spin_lock(&bg->fcoe_rx_list.lock); 471 472 __skb_queue_tail(&bg->fcoe_rx_list, skb); 473 if (bg->fcoe_rx_list.qlen == 1) 474 wake_up_process(bg->kthread); 475 476 spin_unlock(&bg->fcoe_rx_list.lock); 477 478 return 0; 479 err: 480 kfree_skb(skb); 481 return -1; 482 } 483 484 static int bnx2fc_l2_rcv_thread(void *arg) 485 { 486 struct fcoe_percpu_s *bg = arg; 487 struct sk_buff *skb; 488 489 set_user_nice(current, MIN_NICE); 490 set_current_state(TASK_INTERRUPTIBLE); 491 while (!kthread_should_stop()) { 492 schedule(); 493 spin_lock_bh(&bg->fcoe_rx_list.lock); 494 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { 495 spin_unlock_bh(&bg->fcoe_rx_list.lock); 496 bnx2fc_recv_frame(skb); 497 spin_lock_bh(&bg->fcoe_rx_list.lock); 498 } 499 __set_current_state(TASK_INTERRUPTIBLE); 500 spin_unlock_bh(&bg->fcoe_rx_list.lock); 501 } 502 __set_current_state(TASK_RUNNING); 503 return 0; 504 } 505 506 507 static void bnx2fc_recv_frame(struct sk_buff *skb) 508 { 509 u32 fr_len; 510 struct fc_lport *lport; 511 struct fcoe_rcv_info *fr; 512 struct fc_stats *stats; 513 struct fc_frame_header *fh; 514 struct fcoe_crc_eof crc_eof; 515 struct fc_frame *fp; 516 struct fc_lport *vn_port; 517 struct fcoe_port *port, *phys_port; 518 u8 *mac = NULL; 519 u8 *dest_mac = NULL; 520 struct fcoe_hdr *hp; 521 struct bnx2fc_interface *interface; 522 struct fcoe_ctlr *ctlr; 523 524 fr = fcoe_dev_from_skb(skb); 525 lport = fr->fr_dev; 526 if (unlikely(lport == NULL)) { 527 printk(KERN_ERR PFX "Invalid lport struct\n"); 528 kfree_skb(skb); 529 return; 530 } 531 532 if (skb_is_nonlinear(skb)) 533 skb_linearize(skb); 534 mac = eth_hdr(skb)->h_source; 535 dest_mac = eth_hdr(skb)->h_dest; 536 537 /* Pull the header */ 538 hp = (struct fcoe_hdr *) skb_network_header(skb); 539 fh = (struct fc_frame_header *) skb_transport_header(skb); 540 skb_pull(skb, sizeof(struct fcoe_hdr)); 541 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 542 543 fp = (struct fc_frame *)skb; 544 fc_frame_init(fp); 545 fr_dev(fp) = lport; 546 fr_sof(fp) = hp->fcoe_sof; 547 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 548 kfree_skb(skb); 549 return; 550 } 551 fr_eof(fp) = crc_eof.fcoe_eof; 552 fr_crc(fp) = crc_eof.fcoe_crc32; 553 if (pskb_trim(skb, fr_len)) { 554 kfree_skb(skb); 555 return; 556 } 557 558 phys_port = lport_priv(lport); 559 interface = phys_port->priv; 560 ctlr = bnx2fc_to_ctlr(interface); 561 562 fh = fc_frame_header_get(fp); 563 564 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 565 BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n", 566 dest_mac); 567 kfree_skb(skb); 568 return; 569 } 570 571 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 572 if (vn_port) { 573 port = lport_priv(vn_port); 574 if (!ether_addr_equal(port->data_src_addr, dest_mac)) { 575 BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); 576 kfree_skb(skb); 577 return; 578 } 579 } 580 if (ctlr->state) { 581 if (!ether_addr_equal(mac, ctlr->dest_addr)) { 582 BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n", 583 mac, ctlr->dest_addr); 584 kfree_skb(skb); 585 return; 586 } 587 } 588 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 589 fh->fh_type == FC_TYPE_FCP) { 590 /* Drop FCP data. We dont this in L2 path */ 591 kfree_skb(skb); 592 return; 593 } 594 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 595 fh->fh_type == FC_TYPE_ELS) { 596 switch (fc_frame_payload_op(fp)) { 597 case ELS_LOGO: 598 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 599 /* drop non-FIP LOGO */ 600 kfree_skb(skb); 601 return; 602 } 603 break; 604 } 605 } 606 607 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 608 /* Drop incoming ABTS */ 609 kfree_skb(skb); 610 return; 611 } 612 613 /* 614 * If the destination ID from the frame header does not match what we 615 * have on record for lport and the search for a NPIV port came up 616 * empty then this is not addressed to our port so simply drop it. 617 */ 618 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 619 BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", 620 lport->port_id, ntoh24(fh->fh_d_id)); 621 kfree_skb(skb); 622 return; 623 } 624 625 stats = per_cpu_ptr(lport->stats, smp_processor_id()); 626 stats->RxFrames++; 627 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; 628 629 if (le32_to_cpu(fr_crc(fp)) != 630 ~crc32(~0, skb->data, fr_len)) { 631 if (stats->InvalidCRCCount < 5) 632 printk(KERN_WARNING PFX "dropping frame with " 633 "CRC error\n"); 634 stats->InvalidCRCCount++; 635 kfree_skb(skb); 636 return; 637 } 638 fc_exch_recv(lport, fp); 639 } 640 641 /** 642 * bnx2fc_percpu_io_thread - thread per cpu for ios 643 * 644 * @arg: ptr to bnx2fc_percpu_info structure 645 */ 646 static int bnx2fc_percpu_io_thread(void *arg) 647 { 648 struct bnx2fc_percpu_s *p = arg; 649 struct bnx2fc_work *work, *tmp; 650 LIST_HEAD(work_list); 651 652 set_user_nice(current, MIN_NICE); 653 set_current_state(TASK_INTERRUPTIBLE); 654 while (!kthread_should_stop()) { 655 schedule(); 656 spin_lock_bh(&p->fp_work_lock); 657 while (!list_empty(&p->work_list)) { 658 list_splice_init(&p->work_list, &work_list); 659 spin_unlock_bh(&p->fp_work_lock); 660 661 list_for_each_entry_safe(work, tmp, &work_list, list) { 662 list_del_init(&work->list); 663 bnx2fc_process_cq_compl(work->tgt, work->wqe); 664 kfree(work); 665 } 666 667 spin_lock_bh(&p->fp_work_lock); 668 } 669 __set_current_state(TASK_INTERRUPTIBLE); 670 spin_unlock_bh(&p->fp_work_lock); 671 } 672 __set_current_state(TASK_RUNNING); 673 674 return 0; 675 } 676 677 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) 678 { 679 struct fc_host_statistics *bnx2fc_stats; 680 struct fc_lport *lport = shost_priv(shost); 681 struct fcoe_port *port = lport_priv(lport); 682 struct bnx2fc_interface *interface = port->priv; 683 struct bnx2fc_hba *hba = interface->hba; 684 struct fcoe_statistics_params *fw_stats; 685 int rc = 0; 686 687 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; 688 if (!fw_stats) 689 return NULL; 690 691 mutex_lock(&hba->hba_stats_mutex); 692 693 bnx2fc_stats = fc_get_host_stats(shost); 694 695 init_completion(&hba->stat_req_done); 696 if (bnx2fc_send_stat_req(hba)) 697 goto unlock_stats_mutex; 698 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); 699 if (!rc) { 700 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); 701 goto unlock_stats_mutex; 702 } 703 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); 704 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; 705 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); 706 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; 707 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); 708 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); 709 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); 710 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; 711 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); 712 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); 713 714 bnx2fc_stats->dumped_frames = 0; 715 bnx2fc_stats->lip_count = 0; 716 bnx2fc_stats->nos_count = 0; 717 bnx2fc_stats->loss_of_sync_count = 0; 718 bnx2fc_stats->loss_of_signal_count = 0; 719 bnx2fc_stats->prim_seq_protocol_err_count = 0; 720 721 memcpy(&hba->prev_stats, hba->stats_buffer, 722 sizeof(struct fcoe_statistics_params)); 723 724 unlock_stats_mutex: 725 mutex_unlock(&hba->hba_stats_mutex); 726 return bnx2fc_stats; 727 } 728 729 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) 730 { 731 struct fcoe_port *port = lport_priv(lport); 732 struct bnx2fc_interface *interface = port->priv; 733 struct bnx2fc_hba *hba = interface->hba; 734 struct Scsi_Host *shost = lport->host; 735 int rc = 0; 736 737 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; 738 shost->max_lun = bnx2fc_max_luns; 739 shost->max_id = BNX2FC_MAX_FCP_TGT; 740 shost->max_channel = 0; 741 if (lport->vport) 742 shost->transportt = bnx2fc_vport_xport_template; 743 else 744 shost->transportt = bnx2fc_transport_template; 745 746 /* Add the new host to SCSI-ml */ 747 rc = scsi_add_host(lport->host, dev); 748 if (rc) { 749 printk(KERN_ERR PFX "Error on scsi_add_host\n"); 750 return rc; 751 } 752 if (!lport->vport) 753 fc_host_max_npiv_vports(lport->host) = USHRT_MAX; 754 snprintf(fc_host_symbolic_name(lport->host), 256, 755 "%s (QLogic %s) v%s over %s", 756 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION, 757 interface->netdev->name); 758 759 return 0; 760 } 761 762 static int bnx2fc_link_ok(struct fc_lport *lport) 763 { 764 struct fcoe_port *port = lport_priv(lport); 765 struct bnx2fc_interface *interface = port->priv; 766 struct bnx2fc_hba *hba = interface->hba; 767 struct net_device *dev = hba->phys_dev; 768 int rc = 0; 769 770 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) 771 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 772 else { 773 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 774 rc = -1; 775 } 776 return rc; 777 } 778 779 /** 780 * bnx2fc_get_link_state - get network link state 781 * 782 * @hba: adapter instance pointer 783 * 784 * updates adapter structure flag based on netdev state 785 */ 786 void bnx2fc_get_link_state(struct bnx2fc_hba *hba) 787 { 788 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) 789 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 790 else 791 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 792 } 793 794 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) 795 { 796 struct bnx2fc_hba *hba; 797 struct bnx2fc_interface *interface; 798 struct fcoe_ctlr *ctlr; 799 struct fcoe_port *port; 800 u64 wwnn, wwpn; 801 802 port = lport_priv(lport); 803 interface = port->priv; 804 ctlr = bnx2fc_to_ctlr(interface); 805 hba = interface->hba; 806 807 /* require support for get_pauseparam ethtool op. */ 808 if (!hba->phys_dev->ethtool_ops || 809 !hba->phys_dev->ethtool_ops->get_pauseparam) 810 return -EOPNOTSUPP; 811 812 if (fc_set_mfs(lport, BNX2FC_MFS)) 813 return -EINVAL; 814 815 skb_queue_head_init(&port->fcoe_pending_queue); 816 port->fcoe_pending_queue_active = 0; 817 timer_setup(&port->timer, fcoe_queue_timer, 0); 818 819 fcoe_link_speed_update(lport); 820 821 if (!lport->vport) { 822 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) 823 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 824 1, 0); 825 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); 826 fc_set_wwnn(lport, wwnn); 827 828 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) 829 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 830 2, 0); 831 832 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); 833 fc_set_wwpn(lport, wwpn); 834 } 835 836 return 0; 837 } 838 839 static void bnx2fc_destroy_timer(struct timer_list *t) 840 { 841 struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer); 842 843 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " 844 "Destroy compl not received!!\n"); 845 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 846 wake_up_interruptible(&hba->destroy_wait); 847 } 848 849 /** 850 * bnx2fc_indicate_netevent - Generic netdev event handler 851 * 852 * @context: adapter structure pointer 853 * @event: event type 854 * @vlan_id: vlan id - associated vlan id with this event 855 * 856 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and 857 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. 858 */ 859 static void bnx2fc_indicate_netevent(void *context, unsigned long event, 860 u16 vlan_id) 861 { 862 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; 863 struct fcoe_ctlr_device *cdev; 864 struct fc_lport *lport; 865 struct fc_lport *vport; 866 struct bnx2fc_interface *interface, *tmp; 867 struct fcoe_ctlr *ctlr; 868 int wait_for_upload = 0; 869 u32 link_possible = 1; 870 871 if (vlan_id != 0 && event != NETDEV_UNREGISTER) 872 return; 873 874 switch (event) { 875 case NETDEV_UP: 876 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 877 printk(KERN_ERR "indicate_netevent: "\ 878 "hba is not UP!!\n"); 879 break; 880 881 case NETDEV_DOWN: 882 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 883 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 884 link_possible = 0; 885 break; 886 887 case NETDEV_GOING_DOWN: 888 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 889 link_possible = 0; 890 break; 891 892 case NETDEV_CHANGE: 893 break; 894 895 case NETDEV_UNREGISTER: 896 if (!vlan_id) 897 return; 898 mutex_lock(&bnx2fc_dev_lock); 899 list_for_each_entry_safe(interface, tmp, &if_list, list) { 900 if (interface->hba == hba && 901 interface->vlan_id == (vlan_id & VLAN_VID_MASK)) 902 __bnx2fc_destroy(interface); 903 } 904 mutex_unlock(&bnx2fc_dev_lock); 905 906 /* Ensure ALL destroy work has been completed before return */ 907 flush_workqueue(bnx2fc_wq); 908 return; 909 910 default: 911 return; 912 } 913 914 mutex_lock(&bnx2fc_dev_lock); 915 list_for_each_entry(interface, &if_list, list) { 916 917 if (interface->hba != hba) 918 continue; 919 920 ctlr = bnx2fc_to_ctlr(interface); 921 lport = ctlr->lp; 922 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", 923 interface->netdev->name, event); 924 925 fcoe_link_speed_update(lport); 926 927 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 928 929 if (link_possible && !bnx2fc_link_ok(lport)) { 930 switch (cdev->enabled) { 931 case FCOE_CTLR_DISABLED: 932 pr_info("Link up while interface is disabled.\n"); 933 break; 934 case FCOE_CTLR_ENABLED: 935 case FCOE_CTLR_UNUSED: 936 /* Reset max recv frame size to default */ 937 fc_set_mfs(lport, BNX2FC_MFS); 938 /* 939 * ctlr link up will only be handled during 940 * enable to avoid sending discovery 941 * solicitation on a stale vlan 942 */ 943 if (interface->enabled) 944 fcoe_ctlr_link_up(ctlr); 945 }; 946 } else if (fcoe_ctlr_link_down(ctlr)) { 947 switch (cdev->enabled) { 948 case FCOE_CTLR_DISABLED: 949 pr_info("Link down while interface is disabled.\n"); 950 break; 951 case FCOE_CTLR_ENABLED: 952 case FCOE_CTLR_UNUSED: 953 mutex_lock(&lport->lp_mutex); 954 list_for_each_entry(vport, &lport->vports, list) 955 fc_host_port_type(vport->host) = 956 FC_PORTTYPE_UNKNOWN; 957 mutex_unlock(&lport->lp_mutex); 958 fc_host_port_type(lport->host) = 959 FC_PORTTYPE_UNKNOWN; 960 per_cpu_ptr(lport->stats, 961 get_cpu())->LinkFailureCount++; 962 put_cpu(); 963 fcoe_clean_pending_queue(lport); 964 wait_for_upload = 1; 965 }; 966 } 967 } 968 mutex_unlock(&bnx2fc_dev_lock); 969 970 if (wait_for_upload) { 971 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 972 init_waitqueue_head(&hba->shutdown_wait); 973 BNX2FC_MISC_DBG("indicate_netevent " 974 "num_ofld_sess = %d\n", 975 hba->num_ofld_sess); 976 hba->wait_for_link_down = 1; 977 wait_event_interruptible(hba->shutdown_wait, 978 (hba->num_ofld_sess == 0)); 979 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", 980 hba->num_ofld_sess); 981 hba->wait_for_link_down = 0; 982 983 if (signal_pending(current)) 984 flush_signals(current); 985 } 986 } 987 988 static int bnx2fc_libfc_config(struct fc_lport *lport) 989 { 990 991 /* Set the function pointers set by bnx2fc driver */ 992 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, 993 sizeof(struct libfc_function_template)); 994 fc_elsct_init(lport); 995 fc_exch_init(lport); 996 fc_disc_init(lport); 997 fc_disc_config(lport, lport); 998 return 0; 999 } 1000 1001 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba) 1002 { 1003 int fcoe_min_xid, fcoe_max_xid; 1004 1005 fcoe_min_xid = hba->max_xid + 1; 1006 if (nr_cpu_ids <= 2) 1007 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET; 1008 else 1009 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET; 1010 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid, 1011 fcoe_max_xid, NULL)) { 1012 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); 1013 return -ENOMEM; 1014 } 1015 1016 return 0; 1017 } 1018 1019 static int bnx2fc_lport_config(struct fc_lport *lport) 1020 { 1021 lport->link_up = 0; 1022 lport->qfull = 0; 1023 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; 1024 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; 1025 lport->e_d_tov = 2 * 1000; 1026 lport->r_a_tov = 10 * 1000; 1027 1028 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1029 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1030 lport->does_npiv = 1; 1031 1032 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); 1033 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; 1034 1035 /* alloc stats structure */ 1036 if (fc_lport_init_stats(lport)) 1037 return -ENOMEM; 1038 1039 /* Finish fc_lport configuration */ 1040 fc_lport_config(lport); 1041 1042 return 0; 1043 } 1044 1045 /** 1046 * bnx2fc_fip_recv - handle a received FIP frame. 1047 * 1048 * @skb: the received skb 1049 * @dev: associated &net_device 1050 * @ptype: the &packet_type structure which was used to register this handler. 1051 * @orig_dev: original receive &net_device, in case @ dev is a bond. 1052 * 1053 * Returns: 0 for success 1054 */ 1055 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, 1056 struct packet_type *ptype, 1057 struct net_device *orig_dev) 1058 { 1059 struct bnx2fc_interface *interface; 1060 struct fcoe_ctlr *ctlr; 1061 interface = container_of(ptype, struct bnx2fc_interface, 1062 fip_packet_type); 1063 ctlr = bnx2fc_to_ctlr(interface); 1064 fcoe_ctlr_recv(ctlr, skb); 1065 return 0; 1066 } 1067 1068 /** 1069 * bnx2fc_update_src_mac - Update Ethernet MAC filters. 1070 * 1071 * @fip: FCoE controller. 1072 * @old: Unicast MAC address to delete if the MAC is non-zero. 1073 * @new: Unicast MAC address to add. 1074 * 1075 * Remove any previously-set unicast MAC filter. 1076 * Add secondary FCoE MAC address filter for our OUI. 1077 */ 1078 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) 1079 { 1080 struct fcoe_port *port = lport_priv(lport); 1081 1082 memcpy(port->data_src_addr, addr, ETH_ALEN); 1083 } 1084 1085 /** 1086 * bnx2fc_get_src_mac - return the ethernet source address for an lport 1087 * 1088 * @lport: libfc port 1089 */ 1090 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) 1091 { 1092 struct fcoe_port *port; 1093 1094 port = (struct fcoe_port *)lport_priv(lport); 1095 return port->data_src_addr; 1096 } 1097 1098 /** 1099 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. 1100 * 1101 * @fip: FCoE controller. 1102 * @skb: FIP Packet. 1103 */ 1104 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 1105 { 1106 struct fip_header *fiph; 1107 struct ethhdr *eth_hdr; 1108 u16 op; 1109 u8 sub; 1110 1111 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); 1112 eth_hdr = (struct ethhdr *)skb_mac_header(skb); 1113 op = ntohs(fiph->fip_op); 1114 sub = fiph->fip_subcode; 1115 1116 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka) 1117 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n", 1118 eth_hdr->h_source, eth_hdr->h_dest); 1119 1120 skb->dev = bnx2fc_from_ctlr(fip)->netdev; 1121 dev_queue_xmit(skb); 1122 } 1123 1124 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) 1125 { 1126 struct Scsi_Host *shost = vport_to_shost(vport); 1127 struct fc_lport *n_port = shost_priv(shost); 1128 struct fcoe_port *port = lport_priv(n_port); 1129 struct bnx2fc_interface *interface = port->priv; 1130 struct net_device *netdev = interface->netdev; 1131 struct fc_lport *vn_port; 1132 int rc; 1133 char buf[32]; 1134 1135 rc = fcoe_validate_vport_create(vport); 1136 if (rc) { 1137 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1138 printk(KERN_ERR PFX "Failed to create vport, " 1139 "WWPN (0x%s) already exists\n", 1140 buf); 1141 return rc; 1142 } 1143 1144 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1145 printk(KERN_ERR PFX "vn ports cannot be created on" 1146 "this interface\n"); 1147 return -EIO; 1148 } 1149 rtnl_lock(); 1150 mutex_lock(&bnx2fc_dev_lock); 1151 vn_port = bnx2fc_if_create(interface, &vport->dev, 1); 1152 mutex_unlock(&bnx2fc_dev_lock); 1153 rtnl_unlock(); 1154 1155 if (!vn_port) { 1156 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", 1157 netdev->name); 1158 return -EIO; 1159 } 1160 1161 if (bnx2fc_devloss_tmo) 1162 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo; 1163 1164 if (disabled) { 1165 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1166 } else { 1167 vn_port->boot_time = jiffies; 1168 fc_lport_init(vn_port); 1169 fc_fabric_login(vn_port); 1170 fc_vport_setlink(vn_port); 1171 } 1172 return 0; 1173 } 1174 1175 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) 1176 { 1177 struct bnx2fc_lport *blport, *tmp; 1178 1179 spin_lock_bh(&hba->hba_lock); 1180 list_for_each_entry_safe(blport, tmp, &hba->vports, list) { 1181 if (blport->lport == lport) { 1182 list_del(&blport->list); 1183 kfree(blport); 1184 } 1185 } 1186 spin_unlock_bh(&hba->hba_lock); 1187 } 1188 1189 static int bnx2fc_vport_destroy(struct fc_vport *vport) 1190 { 1191 struct Scsi_Host *shost = vport_to_shost(vport); 1192 struct fc_lport *n_port = shost_priv(shost); 1193 struct fc_lport *vn_port = vport->dd_data; 1194 struct fcoe_port *port = lport_priv(vn_port); 1195 struct bnx2fc_interface *interface = port->priv; 1196 struct fc_lport *v_port; 1197 bool found = false; 1198 1199 mutex_lock(&n_port->lp_mutex); 1200 list_for_each_entry(v_port, &n_port->vports, list) 1201 if (v_port->vport == vport) { 1202 found = true; 1203 break; 1204 } 1205 1206 if (!found) { 1207 mutex_unlock(&n_port->lp_mutex); 1208 return -ENOENT; 1209 } 1210 list_del(&vn_port->list); 1211 mutex_unlock(&n_port->lp_mutex); 1212 bnx2fc_free_vport(interface->hba, port->lport); 1213 bnx2fc_port_shutdown(port->lport); 1214 bnx2fc_interface_put(interface); 1215 queue_work(bnx2fc_wq, &port->destroy_work); 1216 return 0; 1217 } 1218 1219 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) 1220 { 1221 struct fc_lport *lport = vport->dd_data; 1222 1223 if (disable) { 1224 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1225 fc_fabric_logoff(lport); 1226 } else { 1227 lport->boot_time = jiffies; 1228 fc_fabric_login(lport); 1229 fc_vport_setlink(lport); 1230 } 1231 return 0; 1232 } 1233 1234 1235 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) 1236 { 1237 struct net_device *netdev = interface->netdev; 1238 struct net_device *physdev = interface->hba->phys_dev; 1239 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1240 struct netdev_hw_addr *ha; 1241 int sel_san_mac = 0; 1242 1243 /* setup Source MAC Address */ 1244 rcu_read_lock(); 1245 for_each_dev_addr(physdev, ha) { 1246 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", 1247 ha->type); 1248 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], 1249 ha->addr[1], ha->addr[2], ha->addr[3], 1250 ha->addr[4], ha->addr[5]); 1251 1252 if ((ha->type == NETDEV_HW_ADDR_T_SAN) && 1253 (is_valid_ether_addr(ha->addr))) { 1254 memcpy(ctlr->ctl_src_addr, ha->addr, 1255 ETH_ALEN); 1256 sel_san_mac = 1; 1257 BNX2FC_MISC_DBG("Found SAN MAC\n"); 1258 } 1259 } 1260 rcu_read_unlock(); 1261 1262 if (!sel_san_mac) 1263 return -ENODEV; 1264 1265 interface->fip_packet_type.func = bnx2fc_fip_recv; 1266 interface->fip_packet_type.type = htons(ETH_P_FIP); 1267 interface->fip_packet_type.dev = netdev; 1268 dev_add_pack(&interface->fip_packet_type); 1269 1270 interface->fcoe_packet_type.func = bnx2fc_rcv; 1271 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); 1272 interface->fcoe_packet_type.dev = netdev; 1273 dev_add_pack(&interface->fcoe_packet_type); 1274 1275 return 0; 1276 } 1277 1278 static int bnx2fc_attach_transport(void) 1279 { 1280 bnx2fc_transport_template = 1281 fc_attach_transport(&bnx2fc_transport_function); 1282 1283 if (bnx2fc_transport_template == NULL) { 1284 printk(KERN_ERR PFX "Failed to attach FC transport\n"); 1285 return -ENODEV; 1286 } 1287 1288 bnx2fc_vport_xport_template = 1289 fc_attach_transport(&bnx2fc_vport_xport_function); 1290 if (bnx2fc_vport_xport_template == NULL) { 1291 printk(KERN_ERR PFX 1292 "Failed to attach FC transport for vport\n"); 1293 fc_release_transport(bnx2fc_transport_template); 1294 bnx2fc_transport_template = NULL; 1295 return -ENODEV; 1296 } 1297 return 0; 1298 } 1299 static void bnx2fc_release_transport(void) 1300 { 1301 fc_release_transport(bnx2fc_transport_template); 1302 fc_release_transport(bnx2fc_vport_xport_template); 1303 bnx2fc_transport_template = NULL; 1304 bnx2fc_vport_xport_template = NULL; 1305 } 1306 1307 static void bnx2fc_interface_release(struct kref *kref) 1308 { 1309 struct fcoe_ctlr_device *ctlr_dev; 1310 struct bnx2fc_interface *interface; 1311 struct fcoe_ctlr *ctlr; 1312 struct net_device *netdev; 1313 1314 interface = container_of(kref, struct bnx2fc_interface, kref); 1315 BNX2FC_MISC_DBG("Interface is being released\n"); 1316 1317 ctlr = bnx2fc_to_ctlr(interface); 1318 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); 1319 netdev = interface->netdev; 1320 1321 /* tear-down FIP controller */ 1322 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) 1323 fcoe_ctlr_destroy(ctlr); 1324 1325 fcoe_ctlr_device_delete(ctlr_dev); 1326 1327 dev_put(netdev); 1328 module_put(THIS_MODULE); 1329 } 1330 1331 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) 1332 { 1333 kref_get(&interface->kref); 1334 } 1335 1336 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) 1337 { 1338 kref_put(&interface->kref, bnx2fc_interface_release); 1339 } 1340 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) 1341 { 1342 /* Free the command manager */ 1343 if (hba->cmd_mgr) { 1344 bnx2fc_cmd_mgr_free(hba->cmd_mgr); 1345 hba->cmd_mgr = NULL; 1346 } 1347 kfree(hba->tgt_ofld_list); 1348 bnx2fc_unbind_pcidev(hba); 1349 kfree(hba); 1350 } 1351 1352 /** 1353 * bnx2fc_hba_create - create a new bnx2fc hba 1354 * 1355 * @cnic: pointer to cnic device 1356 * 1357 * Creates a new FCoE hba on the given device. 1358 * 1359 */ 1360 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) 1361 { 1362 struct bnx2fc_hba *hba; 1363 struct fcoe_capabilities *fcoe_cap; 1364 int rc; 1365 1366 hba = kzalloc(sizeof(*hba), GFP_KERNEL); 1367 if (!hba) { 1368 printk(KERN_ERR PFX "Unable to allocate hba structure\n"); 1369 return NULL; 1370 } 1371 spin_lock_init(&hba->hba_lock); 1372 mutex_init(&hba->hba_mutex); 1373 mutex_init(&hba->hba_stats_mutex); 1374 1375 hba->cnic = cnic; 1376 1377 hba->max_tasks = cnic->max_fcoe_exchanges; 1378 hba->elstm_xids = (hba->max_tasks / 2); 1379 hba->max_outstanding_cmds = hba->elstm_xids; 1380 hba->max_xid = (hba->max_tasks - 1); 1381 1382 rc = bnx2fc_bind_pcidev(hba); 1383 if (rc) { 1384 printk(KERN_ERR PFX "create_adapter: bind error\n"); 1385 goto bind_err; 1386 } 1387 hba->phys_dev = cnic->netdev; 1388 hba->next_conn_id = 0; 1389 1390 hba->tgt_ofld_list = 1391 kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *), 1392 GFP_KERNEL); 1393 if (!hba->tgt_ofld_list) { 1394 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); 1395 goto tgtofld_err; 1396 } 1397 1398 hba->num_ofld_sess = 0; 1399 1400 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba); 1401 if (!hba->cmd_mgr) { 1402 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); 1403 goto cmgr_err; 1404 } 1405 fcoe_cap = &hba->fcoe_cap; 1406 1407 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << 1408 FCOE_IOS_PER_CONNECTION_SHIFT; 1409 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << 1410 FCOE_LOGINS_PER_PORT_SHIFT; 1411 fcoe_cap->capability2 = hba->max_outstanding_cmds << 1412 FCOE_NUMBER_OF_EXCHANGES_SHIFT; 1413 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << 1414 FCOE_NPIV_WWN_PER_PORT_SHIFT; 1415 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << 1416 FCOE_TARGETS_SUPPORTED_SHIFT; 1417 fcoe_cap->capability3 |= hba->max_outstanding_cmds << 1418 FCOE_OUTSTANDING_COMMANDS_SHIFT; 1419 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; 1420 1421 init_waitqueue_head(&hba->shutdown_wait); 1422 init_waitqueue_head(&hba->destroy_wait); 1423 INIT_LIST_HEAD(&hba->vports); 1424 1425 return hba; 1426 1427 cmgr_err: 1428 kfree(hba->tgt_ofld_list); 1429 tgtofld_err: 1430 bnx2fc_unbind_pcidev(hba); 1431 bind_err: 1432 kfree(hba); 1433 return NULL; 1434 } 1435 1436 static struct bnx2fc_interface * 1437 bnx2fc_interface_create(struct bnx2fc_hba *hba, 1438 struct net_device *netdev, 1439 enum fip_mode fip_mode) 1440 { 1441 struct fcoe_ctlr_device *ctlr_dev; 1442 struct bnx2fc_interface *interface; 1443 struct fcoe_ctlr *ctlr; 1444 int size; 1445 int rc = 0; 1446 1447 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); 1448 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, 1449 size); 1450 if (!ctlr_dev) { 1451 printk(KERN_ERR PFX "Unable to allocate interface structure\n"); 1452 return NULL; 1453 } 1454 ctlr = fcoe_ctlr_device_priv(ctlr_dev); 1455 ctlr->cdev = ctlr_dev; 1456 interface = fcoe_ctlr_priv(ctlr); 1457 dev_hold(netdev); 1458 kref_init(&interface->kref); 1459 interface->hba = hba; 1460 interface->netdev = netdev; 1461 1462 /* Initialize FIP */ 1463 fcoe_ctlr_init(ctlr, fip_mode); 1464 ctlr->send = bnx2fc_fip_send; 1465 ctlr->update_mac = bnx2fc_update_src_mac; 1466 ctlr->get_src_addr = bnx2fc_get_src_mac; 1467 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); 1468 1469 rc = bnx2fc_interface_setup(interface); 1470 if (!rc) 1471 return interface; 1472 1473 fcoe_ctlr_destroy(ctlr); 1474 dev_put(netdev); 1475 fcoe_ctlr_device_delete(ctlr_dev); 1476 return NULL; 1477 } 1478 1479 /** 1480 * bnx2fc_if_create - Create FCoE instance on a given interface 1481 * 1482 * @interface: FCoE interface to create a local port on 1483 * @parent: Device pointer to be the parent in sysfs for the SCSI host 1484 * @npiv: Indicates if the port is vport or not 1485 * 1486 * Creates a fc_lport instance and a Scsi_Host instance and configure them. 1487 * 1488 * Returns: Allocated fc_lport or an error pointer 1489 */ 1490 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 1491 struct device *parent, int npiv) 1492 { 1493 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1494 struct fc_lport *lport, *n_port; 1495 struct fcoe_port *port; 1496 struct Scsi_Host *shost; 1497 struct fc_vport *vport = dev_to_vport(parent); 1498 struct bnx2fc_lport *blport; 1499 struct bnx2fc_hba *hba = interface->hba; 1500 int rc = 0; 1501 1502 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); 1503 if (!blport) { 1504 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); 1505 return NULL; 1506 } 1507 1508 /* Allocate Scsi_Host structure */ 1509 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds; 1510 if (!npiv) 1511 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); 1512 else 1513 lport = libfc_vport_create(vport, sizeof(*port)); 1514 1515 if (!lport) { 1516 printk(KERN_ERR PFX "could not allocate scsi host structure\n"); 1517 goto free_blport; 1518 } 1519 shost = lport->host; 1520 port = lport_priv(lport); 1521 port->lport = lport; 1522 port->priv = interface; 1523 port->get_netdev = bnx2fc_netdev; 1524 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work); 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 1585 shost_err: 1586 scsi_remove_host(shost); 1587 lp_config_err: 1588 scsi_host_put(lport->host); 1589 free_blport: 1590 kfree(blport); 1591 return NULL; 1592 } 1593 1594 static 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 1602 static 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 1620 static 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 1643 static 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_interface_put(interface); 1653 queue_work(bnx2fc_wq, &port->destroy_work); 1654 } 1655 1656 /** 1657 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface 1658 * 1659 * @buffer: The name of the Ethernet interface to be destroyed 1660 * @kp: The associated kernel parameter 1661 * 1662 * Called from sysfs. 1663 * 1664 * Returns: 0 for success 1665 */ 1666 static int bnx2fc_destroy(struct net_device *netdev) 1667 { 1668 struct bnx2fc_interface *interface = NULL; 1669 struct workqueue_struct *timer_work_queue; 1670 struct fcoe_ctlr *ctlr; 1671 int rc = 0; 1672 1673 rtnl_lock(); 1674 mutex_lock(&bnx2fc_dev_lock); 1675 1676 interface = bnx2fc_interface_lookup(netdev); 1677 ctlr = bnx2fc_to_ctlr(interface); 1678 if (!interface || !ctlr->lp) { 1679 rc = -ENODEV; 1680 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); 1681 goto netdev_err; 1682 } 1683 1684 timer_work_queue = interface->timer_work_queue; 1685 __bnx2fc_destroy(interface); 1686 destroy_workqueue(timer_work_queue); 1687 1688 netdev_err: 1689 mutex_unlock(&bnx2fc_dev_lock); 1690 rtnl_unlock(); 1691 return rc; 1692 } 1693 1694 static void bnx2fc_destroy_work(struct work_struct *work) 1695 { 1696 struct fcoe_port *port; 1697 struct fc_lport *lport; 1698 1699 port = container_of(work, struct fcoe_port, destroy_work); 1700 lport = port->lport; 1701 1702 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n"); 1703 1704 bnx2fc_if_destroy(lport); 1705 } 1706 1707 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) 1708 { 1709 bnx2fc_free_fw_resc(hba); 1710 bnx2fc_free_task_ctx(hba); 1711 } 1712 1713 /** 1714 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated 1715 * pci structure 1716 * 1717 * @hba: Adapter instance 1718 */ 1719 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) 1720 { 1721 if (bnx2fc_setup_task_ctx(hba)) 1722 goto mem_err; 1723 1724 if (bnx2fc_setup_fw_resc(hba)) 1725 goto mem_err; 1726 1727 return 0; 1728 mem_err: 1729 bnx2fc_unbind_adapter_devices(hba); 1730 return -ENOMEM; 1731 } 1732 1733 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) 1734 { 1735 struct cnic_dev *cnic; 1736 struct pci_dev *pdev; 1737 1738 if (!hba->cnic) { 1739 printk(KERN_ERR PFX "cnic is NULL\n"); 1740 return -ENODEV; 1741 } 1742 cnic = hba->cnic; 1743 pdev = hba->pcidev = cnic->pcidev; 1744 if (!hba->pcidev) 1745 return -ENODEV; 1746 1747 switch (pdev->device) { 1748 case PCI_DEVICE_ID_NX2_57710: 1749 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN); 1750 break; 1751 case PCI_DEVICE_ID_NX2_57711: 1752 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN); 1753 break; 1754 case PCI_DEVICE_ID_NX2_57712: 1755 case PCI_DEVICE_ID_NX2_57712_MF: 1756 case PCI_DEVICE_ID_NX2_57712_VF: 1757 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN); 1758 break; 1759 case PCI_DEVICE_ID_NX2_57800: 1760 case PCI_DEVICE_ID_NX2_57800_MF: 1761 case PCI_DEVICE_ID_NX2_57800_VF: 1762 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN); 1763 break; 1764 case PCI_DEVICE_ID_NX2_57810: 1765 case PCI_DEVICE_ID_NX2_57810_MF: 1766 case PCI_DEVICE_ID_NX2_57810_VF: 1767 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN); 1768 break; 1769 case PCI_DEVICE_ID_NX2_57840: 1770 case PCI_DEVICE_ID_NX2_57840_MF: 1771 case PCI_DEVICE_ID_NX2_57840_VF: 1772 case PCI_DEVICE_ID_NX2_57840_2_20: 1773 case PCI_DEVICE_ID_NX2_57840_4_10: 1774 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN); 1775 break; 1776 default: 1777 pr_err(PFX "Unknown device id 0x%x\n", pdev->device); 1778 break; 1779 } 1780 pci_dev_get(hba->pcidev); 1781 return 0; 1782 } 1783 1784 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) 1785 { 1786 if (hba->pcidev) { 1787 hba->chip_num[0] = '\0'; 1788 pci_dev_put(hba->pcidev); 1789 } 1790 hba->pcidev = NULL; 1791 } 1792 1793 /** 1794 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats 1795 * 1796 * @handle: transport handle pointing to adapter struture 1797 */ 1798 static int bnx2fc_ulp_get_stats(void *handle) 1799 { 1800 struct bnx2fc_hba *hba = handle; 1801 struct cnic_dev *cnic; 1802 struct fcoe_stats_info *stats_addr; 1803 1804 if (!hba) 1805 return -EINVAL; 1806 1807 cnic = hba->cnic; 1808 stats_addr = &cnic->stats_addr->fcoe_stat; 1809 if (!stats_addr) 1810 return -EINVAL; 1811 1812 strncpy(stats_addr->version, BNX2FC_VERSION, 1813 sizeof(stats_addr->version)); 1814 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX; 1815 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX; 1816 1817 return 0; 1818 } 1819 1820 1821 /** 1822 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance 1823 * 1824 * @handle: transport handle pointing to adapter structure 1825 * 1826 * This function maps adapter structure to pcidev structure and initiates 1827 * firmware handshake to enable/initialize on-chip FCoE components. 1828 * This bnx2fc - cnic interface api callback is used after following 1829 * conditions are met - 1830 * a) underlying network interface is up (marked by event NETDEV_UP 1831 * from netdev 1832 * b) bnx2fc adatper structure is registered. 1833 */ 1834 static void bnx2fc_ulp_start(void *handle) 1835 { 1836 struct bnx2fc_hba *hba = handle; 1837 struct bnx2fc_interface *interface; 1838 struct fcoe_ctlr *ctlr; 1839 struct fc_lport *lport; 1840 1841 mutex_lock(&bnx2fc_dev_lock); 1842 1843 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1844 bnx2fc_fw_init(hba); 1845 1846 BNX2FC_MISC_DBG("bnx2fc started.\n"); 1847 1848 list_for_each_entry(interface, &if_list, list) { 1849 if (interface->hba == hba) { 1850 ctlr = bnx2fc_to_ctlr(interface); 1851 lport = ctlr->lp; 1852 /* Kick off Fabric discovery*/ 1853 printk(KERN_ERR PFX "ulp_init: start discovery\n"); 1854 lport->tt.frame_send = bnx2fc_xmit; 1855 bnx2fc_start_disc(interface); 1856 } 1857 } 1858 1859 mutex_unlock(&bnx2fc_dev_lock); 1860 } 1861 1862 static void bnx2fc_port_shutdown(struct fc_lport *lport) 1863 { 1864 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1865 fc_fabric_logoff(lport); 1866 fc_lport_destroy(lport); 1867 } 1868 1869 static void bnx2fc_stop(struct bnx2fc_interface *interface) 1870 { 1871 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1872 struct fc_lport *lport; 1873 struct fc_lport *vport; 1874 1875 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) 1876 return; 1877 1878 lport = ctlr->lp; 1879 bnx2fc_port_shutdown(lport); 1880 1881 mutex_lock(&lport->lp_mutex); 1882 list_for_each_entry(vport, &lport->vports, list) 1883 fc_host_port_type(vport->host) = 1884 FC_PORTTYPE_UNKNOWN; 1885 mutex_unlock(&lport->lp_mutex); 1886 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1887 fcoe_ctlr_link_down(ctlr); 1888 fcoe_clean_pending_queue(lport); 1889 } 1890 1891 static int bnx2fc_fw_init(struct bnx2fc_hba *hba) 1892 { 1893 #define BNX2FC_INIT_POLL_TIME (1000 / HZ) 1894 int rc = -1; 1895 int i = HZ; 1896 1897 rc = bnx2fc_bind_adapter_devices(hba); 1898 if (rc) { 1899 printk(KERN_ALERT PFX 1900 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); 1901 goto err_out; 1902 } 1903 1904 rc = bnx2fc_send_fw_fcoe_init_msg(hba); 1905 if (rc) { 1906 printk(KERN_ALERT PFX 1907 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); 1908 goto err_unbind; 1909 } 1910 1911 /* 1912 * Wait until the adapter init message is complete, and adapter 1913 * state is UP. 1914 */ 1915 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) 1916 msleep(BNX2FC_INIT_POLL_TIME); 1917 1918 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { 1919 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " 1920 "Ignoring...\n", 1921 hba->cnic->netdev->name); 1922 rc = -1; 1923 goto err_unbind; 1924 } 1925 1926 1927 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); 1928 return 0; 1929 1930 err_unbind: 1931 bnx2fc_unbind_adapter_devices(hba); 1932 err_out: 1933 return rc; 1934 } 1935 1936 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) 1937 { 1938 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { 1939 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { 1940 timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer, 1941 0); 1942 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + 1943 jiffies; 1944 add_timer(&hba->destroy_timer); 1945 wait_event_interruptible(hba->destroy_wait, 1946 test_bit(BNX2FC_FLAG_DESTROY_CMPL, 1947 &hba->flags)); 1948 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 1949 /* This should never happen */ 1950 if (signal_pending(current)) 1951 flush_signals(current); 1952 1953 del_timer_sync(&hba->destroy_timer); 1954 } 1955 bnx2fc_unbind_adapter_devices(hba); 1956 } 1957 } 1958 1959 /** 1960 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance 1961 * 1962 * @handle: transport handle pointing to adapter structure 1963 * 1964 * Driver checks if adapter is already in shutdown mode, if not start 1965 * the shutdown process. 1966 */ 1967 static void bnx2fc_ulp_stop(void *handle) 1968 { 1969 struct bnx2fc_hba *hba = handle; 1970 struct bnx2fc_interface *interface; 1971 1972 printk(KERN_ERR "ULP_STOP\n"); 1973 1974 mutex_lock(&bnx2fc_dev_lock); 1975 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1976 goto exit; 1977 list_for_each_entry(interface, &if_list, list) { 1978 if (interface->hba == hba) 1979 bnx2fc_stop(interface); 1980 } 1981 BUG_ON(hba->num_ofld_sess != 0); 1982 1983 mutex_lock(&hba->hba_mutex); 1984 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 1985 clear_bit(ADAPTER_STATE_GOING_DOWN, 1986 &hba->adapter_state); 1987 1988 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 1989 mutex_unlock(&hba->hba_mutex); 1990 1991 bnx2fc_fw_destroy(hba); 1992 exit: 1993 mutex_unlock(&bnx2fc_dev_lock); 1994 } 1995 1996 static void bnx2fc_start_disc(struct bnx2fc_interface *interface) 1997 { 1998 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1999 struct fc_lport *lport; 2000 int wait_cnt = 0; 2001 2002 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2003 /* Kick off FIP/FLOGI */ 2004 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 2005 printk(KERN_ERR PFX "Init not done yet\n"); 2006 return; 2007 } 2008 2009 lport = ctlr->lp; 2010 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); 2011 2012 if (!bnx2fc_link_ok(lport) && interface->enabled) { 2013 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); 2014 fcoe_ctlr_link_up(ctlr); 2015 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2016 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2017 } 2018 2019 /* wait for the FCF to be selected before issuing FLOGI */ 2020 while (!ctlr->sel_fcf) { 2021 msleep(250); 2022 /* give up after 3 secs */ 2023 if (++wait_cnt > 12) 2024 break; 2025 } 2026 2027 /* Reset max receive frame size to default */ 2028 if (fc_set_mfs(lport, BNX2FC_MFS)) 2029 return; 2030 2031 fc_lport_init(lport); 2032 fc_fabric_login(lport); 2033 } 2034 2035 2036 /** 2037 * bnx2fc_ulp_init - Initialize an adapter instance 2038 * 2039 * @dev : cnic device handle 2040 * Called from cnic_register_driver() context to initialize all 2041 * enumerated cnic devices. This routine allocates adapter structure 2042 * and other device specific resources. 2043 */ 2044 static void bnx2fc_ulp_init(struct cnic_dev *dev) 2045 { 2046 struct bnx2fc_hba *hba; 2047 int rc = 0; 2048 2049 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2050 /* bnx2fc works only when bnx2x is loaded */ 2051 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || 2052 (dev->max_fcoe_conn == 0)) { 2053 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," 2054 " flags: %lx fcoe_conn: %d\n", 2055 dev->netdev->name, dev->flags, dev->max_fcoe_conn); 2056 return; 2057 } 2058 2059 hba = bnx2fc_hba_create(dev); 2060 if (!hba) { 2061 printk(KERN_ERR PFX "hba initialization failed\n"); 2062 return; 2063 } 2064 2065 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name); 2066 2067 /* Add HBA to the adapter list */ 2068 mutex_lock(&bnx2fc_dev_lock); 2069 list_add_tail(&hba->list, &adapter_list); 2070 adapter_count++; 2071 mutex_unlock(&bnx2fc_dev_lock); 2072 2073 dev->fcoe_cap = &hba->fcoe_cap; 2074 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2075 rc = dev->register_device(dev, CNIC_ULP_FCOE, 2076 (void *) hba); 2077 if (rc) 2078 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); 2079 else 2080 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2081 } 2082 2083 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */ 2084 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr) 2085 { 2086 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2087 2088 if (interface->enabled == true) { 2089 if (!ctlr->lp) { 2090 pr_err(PFX "__bnx2fc_disable: lport not found\n"); 2091 return -ENODEV; 2092 } else { 2093 interface->enabled = false; 2094 fcoe_ctlr_link_down(ctlr); 2095 fcoe_clean_pending_queue(ctlr->lp); 2096 } 2097 } 2098 return 0; 2099 } 2100 2101 /** 2102 * Deperecated: Use bnx2fc_enabled() 2103 */ 2104 static int bnx2fc_disable(struct net_device *netdev) 2105 { 2106 struct bnx2fc_interface *interface; 2107 struct fcoe_ctlr *ctlr; 2108 int rc = 0; 2109 2110 rtnl_lock(); 2111 mutex_lock(&bnx2fc_dev_lock); 2112 2113 interface = bnx2fc_interface_lookup(netdev); 2114 ctlr = bnx2fc_to_ctlr(interface); 2115 2116 if (!interface) { 2117 rc = -ENODEV; 2118 pr_err(PFX "bnx2fc_disable: interface not found\n"); 2119 } else { 2120 rc = __bnx2fc_disable(ctlr); 2121 } 2122 mutex_unlock(&bnx2fc_dev_lock); 2123 rtnl_unlock(); 2124 return rc; 2125 } 2126 2127 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport, 2128 struct cnic_fc_npiv_tbl *npiv_tbl) 2129 { 2130 struct fc_vport_identifiers vpid; 2131 uint i, created = 0; 2132 u64 wwnn = 0; 2133 char wwpn_str[32]; 2134 char wwnn_str[32]; 2135 2136 if (npiv_tbl->count > MAX_NPIV_ENTRIES) { 2137 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n"); 2138 goto done; 2139 } 2140 2141 /* Sanity check the first entry to make sure it's not 0 */ 2142 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 && 2143 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) { 2144 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n"); 2145 goto done; 2146 } 2147 2148 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR; 2149 vpid.vport_type = FC_PORTTYPE_NPIV; 2150 vpid.disable = false; 2151 2152 for (i = 0; i < npiv_tbl->count; i++) { 2153 wwnn = wwn_to_u64(npiv_tbl->wwnn[i]); 2154 if (wwnn == 0) { 2155 /* 2156 * If we get a 0 element from for the WWNN then assume 2157 * the WWNN should be the same as the physical port. 2158 */ 2159 wwnn = lport->wwnn; 2160 } 2161 vpid.node_name = wwnn; 2162 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]); 2163 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name), 2164 "NPIV[%u]:%016llx-%016llx", 2165 created, vpid.port_name, vpid.node_name); 2166 fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str)); 2167 fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str)); 2168 BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str, 2169 wwpn_str); 2170 if (fc_vport_create(lport->host, 0, &vpid)) 2171 created++; 2172 else 2173 BNX2FC_HBA_DBG(lport, "Failed to create vport\n"); 2174 } 2175 done: 2176 return created; 2177 } 2178 2179 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr) 2180 { 2181 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2182 struct bnx2fc_hba *hba; 2183 struct cnic_fc_npiv_tbl *npiv_tbl; 2184 struct fc_lport *lport; 2185 2186 if (interface->enabled == false) { 2187 if (!ctlr->lp) { 2188 pr_err(PFX "__bnx2fc_enable: lport not found\n"); 2189 return -ENODEV; 2190 } else if (!bnx2fc_link_ok(ctlr->lp)) { 2191 fcoe_ctlr_link_up(ctlr); 2192 interface->enabled = true; 2193 } 2194 } 2195 2196 /* Create static NPIV ports if any are contained in NVRAM */ 2197 hba = interface->hba; 2198 lport = ctlr->lp; 2199 2200 if (!hba) 2201 goto done; 2202 2203 if (!hba->cnic) 2204 goto done; 2205 2206 if (!lport) 2207 goto done; 2208 2209 if (!lport->host) 2210 goto done; 2211 2212 if (!hba->cnic->get_fc_npiv_tbl) 2213 goto done; 2214 2215 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL); 2216 if (!npiv_tbl) 2217 goto done; 2218 2219 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl)) 2220 goto done_free; 2221 2222 bnx2fc_npiv_create_vports(lport, npiv_tbl); 2223 done_free: 2224 kfree(npiv_tbl); 2225 done: 2226 return 0; 2227 } 2228 2229 /** 2230 * Deprecated: Use bnx2fc_enabled() 2231 */ 2232 static int bnx2fc_enable(struct net_device *netdev) 2233 { 2234 struct bnx2fc_interface *interface; 2235 struct fcoe_ctlr *ctlr; 2236 int rc = 0; 2237 2238 rtnl_lock(); 2239 mutex_lock(&bnx2fc_dev_lock); 2240 2241 interface = bnx2fc_interface_lookup(netdev); 2242 ctlr = bnx2fc_to_ctlr(interface); 2243 if (!interface) { 2244 rc = -ENODEV; 2245 pr_err(PFX "bnx2fc_enable: interface not found\n"); 2246 } else { 2247 rc = __bnx2fc_enable(ctlr); 2248 } 2249 2250 mutex_unlock(&bnx2fc_dev_lock); 2251 rtnl_unlock(); 2252 return rc; 2253 } 2254 2255 /** 2256 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller 2257 * @cdev: The FCoE Controller that is being enabled or disabled 2258 * 2259 * fcoe_sysfs will ensure that the state of 'enabled' has 2260 * changed, so no checking is necessary here. This routine simply 2261 * calls fcoe_enable or fcoe_disable, both of which are deprecated. 2262 * When those routines are removed the functionality can be merged 2263 * here. 2264 */ 2265 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev) 2266 { 2267 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); 2268 2269 switch (cdev->enabled) { 2270 case FCOE_CTLR_ENABLED: 2271 return __bnx2fc_enable(ctlr); 2272 case FCOE_CTLR_DISABLED: 2273 return __bnx2fc_disable(ctlr); 2274 case FCOE_CTLR_UNUSED: 2275 default: 2276 return -ENOTSUPP; 2277 }; 2278 } 2279 2280 enum bnx2fc_create_link_state { 2281 BNX2FC_CREATE_LINK_DOWN, 2282 BNX2FC_CREATE_LINK_UP, 2283 }; 2284 2285 /** 2286 * _bnx2fc_create() - Create bnx2fc FCoE interface 2287 * @netdev : The net_device object the Ethernet interface to create on 2288 * @fip_mode: The FIP mode for this creation 2289 * @link_state: The ctlr link state on creation 2290 * 2291 * Called from either the libfcoe 'create' module parameter 2292 * via fcoe_create or from fcoe_syfs's ctlr_create file. 2293 * 2294 * libfcoe's 'create' module parameter is deprecated so some 2295 * consolidation of code can be done when that interface is 2296 * removed. 2297 * 2298 * Returns: 0 for success 2299 */ 2300 static int _bnx2fc_create(struct net_device *netdev, 2301 enum fip_mode fip_mode, 2302 enum bnx2fc_create_link_state link_state) 2303 { 2304 struct fcoe_ctlr_device *cdev; 2305 struct fcoe_ctlr *ctlr; 2306 struct bnx2fc_interface *interface; 2307 struct bnx2fc_hba *hba; 2308 struct net_device *phys_dev = netdev; 2309 struct fc_lport *lport; 2310 struct ethtool_drvinfo drvinfo; 2311 int rc = 0; 2312 int vlan_id = 0; 2313 2314 BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); 2315 if (fip_mode != FIP_MODE_FABRIC) { 2316 printk(KERN_ERR "fip mode not FABRIC\n"); 2317 return -EIO; 2318 } 2319 2320 rtnl_lock(); 2321 2322 mutex_lock(&bnx2fc_dev_lock); 2323 2324 if (!try_module_get(THIS_MODULE)) { 2325 rc = -EINVAL; 2326 goto mod_err; 2327 } 2328 2329 /* obtain physical netdev */ 2330 if (is_vlan_dev(netdev)) 2331 phys_dev = vlan_dev_real_dev(netdev); 2332 2333 /* verify if the physical device is a netxtreme2 device */ 2334 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { 2335 memset(&drvinfo, 0, sizeof(drvinfo)); 2336 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); 2337 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { 2338 printk(KERN_ERR PFX "Not a netxtreme2 device\n"); 2339 rc = -EINVAL; 2340 goto netdev_err; 2341 } 2342 } else { 2343 printk(KERN_ERR PFX "unable to obtain drv_info\n"); 2344 rc = -EINVAL; 2345 goto netdev_err; 2346 } 2347 2348 /* obtain interface and initialize rest of the structure */ 2349 hba = bnx2fc_hba_lookup(phys_dev); 2350 if (!hba) { 2351 rc = -ENODEV; 2352 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); 2353 goto netdev_err; 2354 } 2355 2356 if (bnx2fc_interface_lookup(netdev)) { 2357 rc = -EEXIST; 2358 goto netdev_err; 2359 } 2360 2361 interface = bnx2fc_interface_create(hba, netdev, fip_mode); 2362 if (!interface) { 2363 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); 2364 rc = -ENOMEM; 2365 goto netdev_err; 2366 } 2367 2368 if (is_vlan_dev(netdev)) { 2369 vlan_id = vlan_dev_vlan_id(netdev); 2370 interface->vlan_enabled = 1; 2371 } 2372 2373 ctlr = bnx2fc_to_ctlr(interface); 2374 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 2375 interface->vlan_id = vlan_id; 2376 interface->tm_timeout = BNX2FC_TM_TIMEOUT; 2377 2378 interface->timer_work_queue = 2379 create_singlethread_workqueue("bnx2fc_timer_wq"); 2380 if (!interface->timer_work_queue) { 2381 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); 2382 rc = -EINVAL; 2383 goto ifput_err; 2384 } 2385 2386 lport = bnx2fc_if_create(interface, &cdev->dev, 0); 2387 if (!lport) { 2388 printk(KERN_ERR PFX "Failed to create interface (%s)\n", 2389 netdev->name); 2390 rc = -EINVAL; 2391 goto if_create_err; 2392 } 2393 2394 /* Add interface to if_list */ 2395 list_add_tail(&interface->list, &if_list); 2396 2397 lport->boot_time = jiffies; 2398 2399 /* Make this master N_port */ 2400 ctlr->lp = lport; 2401 2402 if (link_state == BNX2FC_CREATE_LINK_UP) 2403 cdev->enabled = FCOE_CTLR_ENABLED; 2404 else 2405 cdev->enabled = FCOE_CTLR_DISABLED; 2406 2407 if (link_state == BNX2FC_CREATE_LINK_UP && 2408 !bnx2fc_link_ok(lport)) { 2409 fcoe_ctlr_link_up(ctlr); 2410 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2411 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2412 } 2413 2414 BNX2FC_HBA_DBG(lport, "create: START DISC\n"); 2415 bnx2fc_start_disc(interface); 2416 2417 if (link_state == BNX2FC_CREATE_LINK_UP) 2418 interface->enabled = true; 2419 2420 /* 2421 * Release from kref_init in bnx2fc_interface_setup, on success 2422 * lport should be holding a reference taken in bnx2fc_if_create 2423 */ 2424 bnx2fc_interface_put(interface); 2425 /* put netdev that was held while calling dev_get_by_name */ 2426 mutex_unlock(&bnx2fc_dev_lock); 2427 rtnl_unlock(); 2428 return 0; 2429 2430 if_create_err: 2431 destroy_workqueue(interface->timer_work_queue); 2432 ifput_err: 2433 bnx2fc_net_cleanup(interface); 2434 bnx2fc_interface_put(interface); 2435 goto mod_err; 2436 netdev_err: 2437 module_put(THIS_MODULE); 2438 mod_err: 2439 mutex_unlock(&bnx2fc_dev_lock); 2440 rtnl_unlock(); 2441 return rc; 2442 } 2443 2444 /** 2445 * bnx2fc_create() - Create a bnx2fc interface 2446 * @netdev : The net_device object the Ethernet interface to create on 2447 * @fip_mode: The FIP mode for this creation 2448 * 2449 * Called from fcoe transport 2450 * 2451 * Returns: 0 for success 2452 */ 2453 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode) 2454 { 2455 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP); 2456 } 2457 2458 /** 2459 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs 2460 * @netdev: The net_device to be used by the allocated FCoE Controller 2461 * 2462 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr 2463 * in a link_down state. The allows the user an opportunity to configure 2464 * the FCoE Controller from sysfs before enabling the FCoE Controller. 2465 * 2466 * Creating in with this routine starts the FCoE Controller in Fabric 2467 * mode. The user can change to VN2VN or another mode before enabling. 2468 */ 2469 static int bnx2fc_ctlr_alloc(struct net_device *netdev) 2470 { 2471 return _bnx2fc_create(netdev, FIP_MODE_FABRIC, 2472 BNX2FC_CREATE_LINK_DOWN); 2473 } 2474 2475 /** 2476 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance 2477 * 2478 * @cnic: Pointer to cnic device instance 2479 * 2480 **/ 2481 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) 2482 { 2483 struct bnx2fc_hba *hba; 2484 2485 /* Called with bnx2fc_dev_lock held */ 2486 list_for_each_entry(hba, &adapter_list, list) { 2487 if (hba->cnic == cnic) 2488 return hba; 2489 } 2490 return NULL; 2491 } 2492 2493 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 2494 *netdev) 2495 { 2496 struct bnx2fc_interface *interface; 2497 2498 /* Called with bnx2fc_dev_lock held */ 2499 list_for_each_entry(interface, &if_list, list) { 2500 if (interface->netdev == netdev) 2501 return interface; 2502 } 2503 return NULL; 2504 } 2505 2506 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device 2507 *phys_dev) 2508 { 2509 struct bnx2fc_hba *hba; 2510 2511 /* Called with bnx2fc_dev_lock held */ 2512 list_for_each_entry(hba, &adapter_list, list) { 2513 if (hba->phys_dev == phys_dev) 2514 return hba; 2515 } 2516 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); 2517 return NULL; 2518 } 2519 2520 /** 2521 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources 2522 * 2523 * @dev cnic device handle 2524 */ 2525 static void bnx2fc_ulp_exit(struct cnic_dev *dev) 2526 { 2527 struct bnx2fc_hba *hba; 2528 struct bnx2fc_interface *interface, *tmp; 2529 2530 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); 2531 2532 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { 2533 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", 2534 dev->netdev->name, dev->flags); 2535 return; 2536 } 2537 2538 mutex_lock(&bnx2fc_dev_lock); 2539 hba = bnx2fc_find_hba_for_cnic(dev); 2540 if (!hba) { 2541 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", 2542 dev); 2543 mutex_unlock(&bnx2fc_dev_lock); 2544 return; 2545 } 2546 2547 list_del_init(&hba->list); 2548 adapter_count--; 2549 2550 list_for_each_entry_safe(interface, tmp, &if_list, list) 2551 /* destroy not called yet, move to quiesced list */ 2552 if (interface->hba == hba) 2553 __bnx2fc_destroy(interface); 2554 mutex_unlock(&bnx2fc_dev_lock); 2555 2556 /* Ensure ALL destroy work has been completed before return */ 2557 flush_workqueue(bnx2fc_wq); 2558 2559 bnx2fc_ulp_stop(hba); 2560 /* unregister cnic device */ 2561 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) 2562 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); 2563 bnx2fc_hba_destroy(hba); 2564 } 2565 2566 static void bnx2fc_rport_terminate_io(struct fc_rport *rport) 2567 { 2568 /* This is a no-op */ 2569 } 2570 2571 /** 2572 * bnx2fc_fcoe_reset - Resets the fcoe 2573 * 2574 * @shost: shost the reset is from 2575 * 2576 * Returns: always 0 2577 */ 2578 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) 2579 { 2580 struct fc_lport *lport = shost_priv(shost); 2581 fc_lport_reset(lport); 2582 return 0; 2583 } 2584 2585 2586 static bool bnx2fc_match(struct net_device *netdev) 2587 { 2588 struct net_device *phys_dev = netdev; 2589 2590 mutex_lock(&bnx2fc_dev_lock); 2591 if (is_vlan_dev(netdev)) 2592 phys_dev = vlan_dev_real_dev(netdev); 2593 2594 if (bnx2fc_hba_lookup(phys_dev)) { 2595 mutex_unlock(&bnx2fc_dev_lock); 2596 return true; 2597 } 2598 2599 mutex_unlock(&bnx2fc_dev_lock); 2600 return false; 2601 } 2602 2603 2604 static struct fcoe_transport bnx2fc_transport = { 2605 .name = {"bnx2fc"}, 2606 .attached = false, 2607 .list = LIST_HEAD_INIT(bnx2fc_transport.list), 2608 .alloc = bnx2fc_ctlr_alloc, 2609 .match = bnx2fc_match, 2610 .create = bnx2fc_create, 2611 .destroy = bnx2fc_destroy, 2612 .enable = bnx2fc_enable, 2613 .disable = bnx2fc_disable, 2614 }; 2615 2616 /** 2617 * bnx2fc_cpu_online - Create a receive thread for an online CPU 2618 * 2619 * @cpu: cpu index for the online cpu 2620 */ 2621 static int bnx2fc_cpu_online(unsigned int cpu) 2622 { 2623 struct bnx2fc_percpu_s *p; 2624 struct task_struct *thread; 2625 2626 p = &per_cpu(bnx2fc_percpu, cpu); 2627 2628 thread = kthread_create_on_node(bnx2fc_percpu_io_thread, 2629 (void *)p, cpu_to_node(cpu), 2630 "bnx2fc_thread/%d", cpu); 2631 if (IS_ERR(thread)) 2632 return PTR_ERR(thread); 2633 2634 /* bind thread to the cpu */ 2635 kthread_bind(thread, cpu); 2636 p->iothread = thread; 2637 wake_up_process(thread); 2638 return 0; 2639 } 2640 2641 static int bnx2fc_cpu_offline(unsigned int cpu) 2642 { 2643 struct bnx2fc_percpu_s *p; 2644 struct task_struct *thread; 2645 struct bnx2fc_work *work, *tmp; 2646 2647 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); 2648 2649 /* Prevent any new work from being queued for this CPU */ 2650 p = &per_cpu(bnx2fc_percpu, cpu); 2651 spin_lock_bh(&p->fp_work_lock); 2652 thread = p->iothread; 2653 p->iothread = NULL; 2654 2655 /* Free all work in the list */ 2656 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 2657 list_del_init(&work->list); 2658 bnx2fc_process_cq_compl(work->tgt, work->wqe); 2659 kfree(work); 2660 } 2661 2662 spin_unlock_bh(&p->fp_work_lock); 2663 2664 if (thread) 2665 kthread_stop(thread); 2666 return 0; 2667 } 2668 2669 static int bnx2fc_slave_configure(struct scsi_device *sdev) 2670 { 2671 if (!bnx2fc_queue_depth) 2672 return 0; 2673 2674 scsi_change_queue_depth(sdev, bnx2fc_queue_depth); 2675 return 0; 2676 } 2677 2678 static enum cpuhp_state bnx2fc_online_state; 2679 2680 /** 2681 * bnx2fc_mod_init - module init entry point 2682 * 2683 * Initialize driver wide global data structures, and register 2684 * with cnic module 2685 **/ 2686 static int __init bnx2fc_mod_init(void) 2687 { 2688 struct fcoe_percpu_s *bg; 2689 struct task_struct *l2_thread; 2690 int rc = 0; 2691 unsigned int cpu = 0; 2692 struct bnx2fc_percpu_s *p; 2693 2694 printk(KERN_INFO PFX "%s", version); 2695 2696 /* register as a fcoe transport */ 2697 rc = fcoe_transport_attach(&bnx2fc_transport); 2698 if (rc) { 2699 printk(KERN_ERR "failed to register an fcoe transport, check " 2700 "if libfcoe is loaded\n"); 2701 goto out; 2702 } 2703 2704 INIT_LIST_HEAD(&adapter_list); 2705 INIT_LIST_HEAD(&if_list); 2706 mutex_init(&bnx2fc_dev_lock); 2707 adapter_count = 0; 2708 2709 /* Attach FC transport template */ 2710 rc = bnx2fc_attach_transport(); 2711 if (rc) 2712 goto detach_ft; 2713 2714 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); 2715 if (!bnx2fc_wq) { 2716 rc = -ENOMEM; 2717 goto release_bt; 2718 } 2719 2720 bg = &bnx2fc_global; 2721 skb_queue_head_init(&bg->fcoe_rx_list); 2722 l2_thread = kthread_create(bnx2fc_l2_rcv_thread, 2723 (void *)bg, 2724 "bnx2fc_l2_thread"); 2725 if (IS_ERR(l2_thread)) { 2726 rc = PTR_ERR(l2_thread); 2727 goto free_wq; 2728 } 2729 wake_up_process(l2_thread); 2730 spin_lock_bh(&bg->fcoe_rx_list.lock); 2731 bg->kthread = l2_thread; 2732 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2733 2734 for_each_possible_cpu(cpu) { 2735 p = &per_cpu(bnx2fc_percpu, cpu); 2736 INIT_LIST_HEAD(&p->work_list); 2737 spin_lock_init(&p->fp_work_lock); 2738 } 2739 2740 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online", 2741 bnx2fc_cpu_online, bnx2fc_cpu_offline); 2742 if (rc < 0) 2743 goto stop_thread; 2744 bnx2fc_online_state = rc; 2745 2746 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); 2747 return 0; 2748 2749 stop_thread: 2750 kthread_stop(l2_thread); 2751 free_wq: 2752 destroy_workqueue(bnx2fc_wq); 2753 release_bt: 2754 bnx2fc_release_transport(); 2755 detach_ft: 2756 fcoe_transport_detach(&bnx2fc_transport); 2757 out: 2758 return rc; 2759 } 2760 2761 static void __exit bnx2fc_mod_exit(void) 2762 { 2763 LIST_HEAD(to_be_deleted); 2764 struct bnx2fc_hba *hba, *next; 2765 struct fcoe_percpu_s *bg; 2766 struct task_struct *l2_thread; 2767 struct sk_buff *skb; 2768 2769 /* 2770 * NOTE: Since cnic calls register_driver routine rtnl_lock, 2771 * it will have higher precedence than bnx2fc_dev_lock. 2772 * unregister_device() cannot be called with bnx2fc_dev_lock 2773 * held. 2774 */ 2775 mutex_lock(&bnx2fc_dev_lock); 2776 list_splice_init(&adapter_list, &to_be_deleted); 2777 adapter_count = 0; 2778 mutex_unlock(&bnx2fc_dev_lock); 2779 2780 /* Unregister with cnic */ 2781 list_for_each_entry_safe(hba, next, &to_be_deleted, list) { 2782 list_del_init(&hba->list); 2783 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", 2784 hba); 2785 bnx2fc_ulp_stop(hba); 2786 /* unregister cnic device */ 2787 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, 2788 &hba->reg_with_cnic)) 2789 hba->cnic->unregister_device(hba->cnic, 2790 CNIC_ULP_FCOE); 2791 bnx2fc_hba_destroy(hba); 2792 } 2793 cnic_unregister_driver(CNIC_ULP_FCOE); 2794 2795 /* Destroy global thread */ 2796 bg = &bnx2fc_global; 2797 spin_lock_bh(&bg->fcoe_rx_list.lock); 2798 l2_thread = bg->kthread; 2799 bg->kthread = NULL; 2800 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) 2801 kfree_skb(skb); 2802 2803 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2804 2805 if (l2_thread) 2806 kthread_stop(l2_thread); 2807 2808 cpuhp_remove_state(bnx2fc_online_state); 2809 2810 destroy_workqueue(bnx2fc_wq); 2811 /* 2812 * detach from scsi transport 2813 * must happen after all destroys are done 2814 */ 2815 bnx2fc_release_transport(); 2816 2817 /* detach from fcoe transport */ 2818 fcoe_transport_detach(&bnx2fc_transport); 2819 } 2820 2821 module_init(bnx2fc_mod_init); 2822 module_exit(bnx2fc_mod_exit); 2823 2824 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { 2825 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, 2826 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, 2827 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, 2828 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, 2829 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, 2830 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, 2831 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, 2832 2833 .get_fcoe_fcf_selected = fcoe_fcf_get_selected, 2834 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, 2835 }; 2836 2837 static struct fc_function_template bnx2fc_transport_function = { 2838 .show_host_node_name = 1, 2839 .show_host_port_name = 1, 2840 .show_host_supported_classes = 1, 2841 .show_host_supported_fc4s = 1, 2842 .show_host_active_fc4s = 1, 2843 .show_host_maxframe_size = 1, 2844 2845 .show_host_port_id = 1, 2846 .show_host_supported_speeds = 1, 2847 .get_host_speed = fc_get_host_speed, 2848 .show_host_speed = 1, 2849 .show_host_port_type = 1, 2850 .get_host_port_state = fc_get_host_port_state, 2851 .show_host_port_state = 1, 2852 .show_host_symbolic_name = 1, 2853 2854 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2855 sizeof(struct bnx2fc_rport)), 2856 .show_rport_maxframe_size = 1, 2857 .show_rport_supported_classes = 1, 2858 2859 .show_host_fabric_name = 1, 2860 .show_starget_node_name = 1, 2861 .show_starget_port_name = 1, 2862 .show_starget_port_id = 1, 2863 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2864 .show_rport_dev_loss_tmo = 1, 2865 .get_fc_host_stats = bnx2fc_get_host_stats, 2866 2867 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2868 2869 .terminate_rport_io = bnx2fc_rport_terminate_io, 2870 2871 .vport_create = bnx2fc_vport_create, 2872 .vport_delete = bnx2fc_vport_destroy, 2873 .vport_disable = bnx2fc_vport_disable, 2874 .bsg_request = fc_lport_bsg_request, 2875 }; 2876 2877 static struct fc_function_template bnx2fc_vport_xport_function = { 2878 .show_host_node_name = 1, 2879 .show_host_port_name = 1, 2880 .show_host_supported_classes = 1, 2881 .show_host_supported_fc4s = 1, 2882 .show_host_active_fc4s = 1, 2883 .show_host_maxframe_size = 1, 2884 2885 .show_host_port_id = 1, 2886 .show_host_supported_speeds = 1, 2887 .get_host_speed = fc_get_host_speed, 2888 .show_host_speed = 1, 2889 .show_host_port_type = 1, 2890 .get_host_port_state = fc_get_host_port_state, 2891 .show_host_port_state = 1, 2892 .show_host_symbolic_name = 1, 2893 2894 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2895 sizeof(struct bnx2fc_rport)), 2896 .show_rport_maxframe_size = 1, 2897 .show_rport_supported_classes = 1, 2898 2899 .show_host_fabric_name = 1, 2900 .show_starget_node_name = 1, 2901 .show_starget_port_name = 1, 2902 .show_starget_port_id = 1, 2903 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2904 .show_rport_dev_loss_tmo = 1, 2905 .get_fc_host_stats = fc_get_host_stats, 2906 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2907 .terminate_rport_io = fc_rport_terminate_io, 2908 .bsg_request = fc_lport_bsg_request, 2909 }; 2910 2911 /* 2912 * Additional scsi_host attributes. 2913 */ 2914 static ssize_t 2915 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr, 2916 char *buf) 2917 { 2918 struct Scsi_Host *shost = class_to_shost(dev); 2919 struct fc_lport *lport = shost_priv(shost); 2920 struct fcoe_port *port = lport_priv(lport); 2921 struct bnx2fc_interface *interface = port->priv; 2922 2923 sprintf(buf, "%u\n", interface->tm_timeout); 2924 return strlen(buf); 2925 } 2926 2927 static ssize_t 2928 bnx2fc_tm_timeout_store(struct device *dev, 2929 struct device_attribute *attr, const char *buf, size_t count) 2930 { 2931 struct Scsi_Host *shost = class_to_shost(dev); 2932 struct fc_lport *lport = shost_priv(shost); 2933 struct fcoe_port *port = lport_priv(lport); 2934 struct bnx2fc_interface *interface = port->priv; 2935 int rval, val; 2936 2937 rval = kstrtouint(buf, 10, &val); 2938 if (rval) 2939 return rval; 2940 if (val > 255) 2941 return -ERANGE; 2942 2943 interface->tm_timeout = (u8)val; 2944 return strlen(buf); 2945 } 2946 2947 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show, 2948 bnx2fc_tm_timeout_store); 2949 2950 static struct device_attribute *bnx2fc_host_attrs[] = { 2951 &dev_attr_tm_timeout, 2952 NULL, 2953 }; 2954 2955 /** 2956 * scsi_host_template structure used while registering with SCSI-ml 2957 */ 2958 static struct scsi_host_template bnx2fc_shost_template = { 2959 .module = THIS_MODULE, 2960 .name = "QLogic Offload FCoE Initiator", 2961 .queuecommand = bnx2fc_queuecommand, 2962 .eh_timed_out = fc_eh_timed_out, 2963 .eh_abort_handler = bnx2fc_eh_abort, /* abts */ 2964 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ 2965 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ 2966 .eh_host_reset_handler = fc_eh_host_reset, 2967 .slave_alloc = fc_slave_alloc, 2968 .change_queue_depth = scsi_change_queue_depth, 2969 .this_id = -1, 2970 .cmd_per_lun = 3, 2971 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, 2972 .dma_boundary = 0x7fff, 2973 .max_sectors = 0x3fbf, 2974 .track_queue_depth = 1, 2975 .slave_configure = bnx2fc_slave_configure, 2976 .shost_attrs = bnx2fc_host_attrs, 2977 }; 2978 2979 static struct libfc_function_template bnx2fc_libfc_fcn_templ = { 2980 .frame_send = bnx2fc_xmit, 2981 .elsct_send = bnx2fc_elsct_send, 2982 .fcp_abort_io = bnx2fc_abort_io, 2983 .fcp_cleanup = bnx2fc_cleanup, 2984 .get_lesb = fcoe_get_lesb, 2985 .rport_event_callback = bnx2fc_rport_event_handler, 2986 }; 2987 2988 /** 2989 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface 2990 * structure carrying callback function pointers 2991 */ 2992 static struct cnic_ulp_ops bnx2fc_cnic_cb = { 2993 .owner = THIS_MODULE, 2994 .cnic_init = bnx2fc_ulp_init, 2995 .cnic_exit = bnx2fc_ulp_exit, 2996 .cnic_start = bnx2fc_ulp_start, 2997 .cnic_stop = bnx2fc_ulp_stop, 2998 .indicate_kcqes = bnx2fc_indicate_kcqe, 2999 .indicate_netevent = bnx2fc_indicate_netevent, 3000 .cnic_get_stats = bnx2fc_ulp_get_stats, 3001 }; 3002