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 static 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 static 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 static 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 static 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 static 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 work->rq_data, 665 work->num_rq, 666 work->task); 667 kfree(work); 668 } 669 670 spin_lock_bh(&p->fp_work_lock); 671 } 672 __set_current_state(TASK_INTERRUPTIBLE); 673 spin_unlock_bh(&p->fp_work_lock); 674 } 675 __set_current_state(TASK_RUNNING); 676 677 return 0; 678 } 679 680 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) 681 { 682 struct fc_host_statistics *bnx2fc_stats; 683 struct fc_lport *lport = shost_priv(shost); 684 struct fcoe_port *port = lport_priv(lport); 685 struct bnx2fc_interface *interface = port->priv; 686 struct bnx2fc_hba *hba = interface->hba; 687 struct fcoe_statistics_params *fw_stats; 688 int rc = 0; 689 690 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; 691 if (!fw_stats) 692 return NULL; 693 694 mutex_lock(&hba->hba_stats_mutex); 695 696 bnx2fc_stats = fc_get_host_stats(shost); 697 698 init_completion(&hba->stat_req_done); 699 if (bnx2fc_send_stat_req(hba)) 700 goto unlock_stats_mutex; 701 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); 702 if (!rc) { 703 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); 704 goto unlock_stats_mutex; 705 } 706 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); 707 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; 708 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); 709 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; 710 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); 711 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); 712 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); 713 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; 714 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); 715 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); 716 717 bnx2fc_stats->dumped_frames = 0; 718 bnx2fc_stats->lip_count = 0; 719 bnx2fc_stats->nos_count = 0; 720 bnx2fc_stats->loss_of_sync_count = 0; 721 bnx2fc_stats->loss_of_signal_count = 0; 722 bnx2fc_stats->prim_seq_protocol_err_count = 0; 723 724 memcpy(&hba->prev_stats, hba->stats_buffer, 725 sizeof(struct fcoe_statistics_params)); 726 727 unlock_stats_mutex: 728 mutex_unlock(&hba->hba_stats_mutex); 729 return bnx2fc_stats; 730 } 731 732 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) 733 { 734 struct fcoe_port *port = lport_priv(lport); 735 struct bnx2fc_interface *interface = port->priv; 736 struct bnx2fc_hba *hba = interface->hba; 737 struct Scsi_Host *shost = lport->host; 738 int rc = 0; 739 740 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; 741 shost->max_lun = bnx2fc_max_luns; 742 shost->max_id = BNX2FC_MAX_FCP_TGT; 743 shost->max_channel = 0; 744 if (lport->vport) 745 shost->transportt = bnx2fc_vport_xport_template; 746 else 747 shost->transportt = bnx2fc_transport_template; 748 749 /* Add the new host to SCSI-ml */ 750 rc = scsi_add_host(lport->host, dev); 751 if (rc) { 752 printk(KERN_ERR PFX "Error on scsi_add_host\n"); 753 return rc; 754 } 755 if (!lport->vport) 756 fc_host_max_npiv_vports(lport->host) = USHRT_MAX; 757 snprintf(fc_host_symbolic_name(lport->host), 256, 758 "%s (QLogic %s) v%s over %s", 759 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION, 760 interface->netdev->name); 761 762 return 0; 763 } 764 765 static int bnx2fc_link_ok(struct fc_lport *lport) 766 { 767 struct fcoe_port *port = lport_priv(lport); 768 struct bnx2fc_interface *interface = port->priv; 769 struct bnx2fc_hba *hba = interface->hba; 770 struct net_device *dev = hba->phys_dev; 771 int rc = 0; 772 773 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) 774 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 775 else { 776 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 777 rc = -1; 778 } 779 return rc; 780 } 781 782 /** 783 * bnx2fc_get_link_state - get network link state 784 * 785 * @hba: adapter instance pointer 786 * 787 * updates adapter structure flag based on netdev state 788 */ 789 void bnx2fc_get_link_state(struct bnx2fc_hba *hba) 790 { 791 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) 792 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 793 else 794 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 795 } 796 797 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) 798 { 799 struct bnx2fc_hba *hba; 800 struct bnx2fc_interface *interface; 801 struct fcoe_ctlr *ctlr; 802 struct fcoe_port *port; 803 u64 wwnn, wwpn; 804 805 port = lport_priv(lport); 806 interface = port->priv; 807 ctlr = bnx2fc_to_ctlr(interface); 808 hba = interface->hba; 809 810 /* require support for get_pauseparam ethtool op. */ 811 if (!hba->phys_dev->ethtool_ops || 812 !hba->phys_dev->ethtool_ops->get_pauseparam) 813 return -EOPNOTSUPP; 814 815 if (fc_set_mfs(lport, BNX2FC_MFS)) 816 return -EINVAL; 817 818 skb_queue_head_init(&port->fcoe_pending_queue); 819 port->fcoe_pending_queue_active = 0; 820 timer_setup(&port->timer, fcoe_queue_timer, 0); 821 822 fcoe_link_speed_update(lport); 823 824 if (!lport->vport) { 825 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) 826 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 827 1, 0); 828 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); 829 fc_set_wwnn(lport, wwnn); 830 831 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) 832 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 833 2, 0); 834 835 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); 836 fc_set_wwpn(lport, wwpn); 837 } 838 839 return 0; 840 } 841 842 static void bnx2fc_destroy_timer(struct timer_list *t) 843 { 844 struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer); 845 846 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " 847 "Destroy compl not received!!\n"); 848 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 849 wake_up_interruptible(&hba->destroy_wait); 850 } 851 852 /** 853 * bnx2fc_indicate_netevent - Generic netdev event handler 854 * 855 * @context: adapter structure pointer 856 * @event: event type 857 * @vlan_id: vlan id - associated vlan id with this event 858 * 859 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and 860 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. 861 */ 862 static void bnx2fc_indicate_netevent(void *context, unsigned long event, 863 u16 vlan_id) 864 { 865 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; 866 struct fcoe_ctlr_device *cdev; 867 struct fc_lport *lport; 868 struct fc_lport *vport; 869 struct bnx2fc_interface *interface, *tmp; 870 struct fcoe_ctlr *ctlr; 871 int wait_for_upload = 0; 872 u32 link_possible = 1; 873 874 if (vlan_id != 0 && event != NETDEV_UNREGISTER) 875 return; 876 877 switch (event) { 878 case NETDEV_UP: 879 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 880 printk(KERN_ERR "indicate_netevent: "\ 881 "hba is not UP!!\n"); 882 break; 883 884 case NETDEV_DOWN: 885 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 886 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 887 link_possible = 0; 888 break; 889 890 case NETDEV_GOING_DOWN: 891 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 892 link_possible = 0; 893 break; 894 895 case NETDEV_CHANGE: 896 break; 897 898 case NETDEV_UNREGISTER: 899 if (!vlan_id) 900 return; 901 mutex_lock(&bnx2fc_dev_lock); 902 list_for_each_entry_safe(interface, tmp, &if_list, list) { 903 if (interface->hba == hba && 904 interface->vlan_id == (vlan_id & VLAN_VID_MASK)) 905 __bnx2fc_destroy(interface); 906 } 907 mutex_unlock(&bnx2fc_dev_lock); 908 909 /* Ensure ALL destroy work has been completed before return */ 910 flush_workqueue(bnx2fc_wq); 911 return; 912 913 default: 914 return; 915 } 916 917 mutex_lock(&bnx2fc_dev_lock); 918 list_for_each_entry(interface, &if_list, list) { 919 920 if (interface->hba != hba) 921 continue; 922 923 ctlr = bnx2fc_to_ctlr(interface); 924 lport = ctlr->lp; 925 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", 926 interface->netdev->name, event); 927 928 fcoe_link_speed_update(lport); 929 930 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 931 932 if (link_possible && !bnx2fc_link_ok(lport)) { 933 switch (cdev->enabled) { 934 case FCOE_CTLR_DISABLED: 935 pr_info("Link up while interface is disabled.\n"); 936 break; 937 case FCOE_CTLR_ENABLED: 938 case FCOE_CTLR_UNUSED: 939 /* Reset max recv frame size to default */ 940 fc_set_mfs(lport, BNX2FC_MFS); 941 /* 942 * ctlr link up will only be handled during 943 * enable to avoid sending discovery 944 * solicitation on a stale vlan 945 */ 946 if (interface->enabled) 947 fcoe_ctlr_link_up(ctlr); 948 } 949 } else if (fcoe_ctlr_link_down(ctlr)) { 950 switch (cdev->enabled) { 951 case FCOE_CTLR_DISABLED: 952 pr_info("Link down while interface is disabled.\n"); 953 break; 954 case FCOE_CTLR_ENABLED: 955 case FCOE_CTLR_UNUSED: 956 mutex_lock(&lport->lp_mutex); 957 list_for_each_entry(vport, &lport->vports, list) 958 fc_host_port_type(vport->host) = 959 FC_PORTTYPE_UNKNOWN; 960 mutex_unlock(&lport->lp_mutex); 961 fc_host_port_type(lport->host) = 962 FC_PORTTYPE_UNKNOWN; 963 per_cpu_ptr(lport->stats, 964 get_cpu())->LinkFailureCount++; 965 put_cpu(); 966 fcoe_clean_pending_queue(lport); 967 wait_for_upload = 1; 968 } 969 } 970 } 971 mutex_unlock(&bnx2fc_dev_lock); 972 973 if (wait_for_upload) { 974 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 975 init_waitqueue_head(&hba->shutdown_wait); 976 BNX2FC_MISC_DBG("indicate_netevent " 977 "num_ofld_sess = %d\n", 978 hba->num_ofld_sess); 979 hba->wait_for_link_down = 1; 980 wait_event_interruptible(hba->shutdown_wait, 981 (hba->num_ofld_sess == 0)); 982 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", 983 hba->num_ofld_sess); 984 hba->wait_for_link_down = 0; 985 986 if (signal_pending(current)) 987 flush_signals(current); 988 } 989 } 990 991 static int bnx2fc_libfc_config(struct fc_lport *lport) 992 { 993 994 /* Set the function pointers set by bnx2fc driver */ 995 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, 996 sizeof(struct libfc_function_template)); 997 fc_elsct_init(lport); 998 fc_exch_init(lport); 999 fc_disc_init(lport); 1000 fc_disc_config(lport, lport); 1001 return 0; 1002 } 1003 1004 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba) 1005 { 1006 int fcoe_min_xid, fcoe_max_xid; 1007 1008 fcoe_min_xid = hba->max_xid + 1; 1009 if (nr_cpu_ids <= 2) 1010 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET; 1011 else 1012 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET; 1013 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid, 1014 fcoe_max_xid, NULL)) { 1015 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); 1016 return -ENOMEM; 1017 } 1018 1019 return 0; 1020 } 1021 1022 static int bnx2fc_lport_config(struct fc_lport *lport) 1023 { 1024 lport->link_up = 0; 1025 lport->qfull = 0; 1026 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; 1027 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; 1028 lport->e_d_tov = 2 * 1000; 1029 lport->r_a_tov = 10 * 1000; 1030 1031 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1032 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1033 lport->does_npiv = 1; 1034 1035 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); 1036 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; 1037 1038 /* alloc stats structure */ 1039 if (fc_lport_init_stats(lport)) 1040 return -ENOMEM; 1041 1042 /* Finish fc_lport configuration */ 1043 fc_lport_config(lport); 1044 1045 return 0; 1046 } 1047 1048 /** 1049 * bnx2fc_fip_recv - handle a received FIP frame. 1050 * 1051 * @skb: the received skb 1052 * @dev: associated &net_device 1053 * @ptype: the &packet_type structure which was used to register this handler. 1054 * @orig_dev: original receive &net_device, in case @ dev is a bond. 1055 * 1056 * Returns: 0 for success 1057 */ 1058 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, 1059 struct packet_type *ptype, 1060 struct net_device *orig_dev) 1061 { 1062 struct bnx2fc_interface *interface; 1063 struct fcoe_ctlr *ctlr; 1064 interface = container_of(ptype, struct bnx2fc_interface, 1065 fip_packet_type); 1066 ctlr = bnx2fc_to_ctlr(interface); 1067 fcoe_ctlr_recv(ctlr, skb); 1068 return 0; 1069 } 1070 1071 /** 1072 * bnx2fc_update_src_mac - Update Ethernet MAC filters. 1073 * 1074 * @lport: The local port 1075 * @addr: Location of data to copy 1076 * 1077 * Remove any previously-set unicast MAC filter. 1078 * Add secondary FCoE MAC address filter for our OUI. 1079 */ 1080 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) 1081 { 1082 struct fcoe_port *port = lport_priv(lport); 1083 1084 memcpy(port->data_src_addr, addr, ETH_ALEN); 1085 } 1086 1087 /** 1088 * bnx2fc_get_src_mac - return the ethernet source address for an lport 1089 * 1090 * @lport: libfc port 1091 */ 1092 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) 1093 { 1094 struct fcoe_port *port; 1095 1096 port = (struct fcoe_port *)lport_priv(lport); 1097 return port->data_src_addr; 1098 } 1099 1100 /** 1101 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. 1102 * 1103 * @fip: FCoE controller. 1104 * @skb: FIP Packet. 1105 */ 1106 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 1107 { 1108 struct fip_header *fiph; 1109 struct ethhdr *eth_hdr; 1110 u16 op; 1111 u8 sub; 1112 1113 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); 1114 eth_hdr = (struct ethhdr *)skb_mac_header(skb); 1115 op = ntohs(fiph->fip_op); 1116 sub = fiph->fip_subcode; 1117 1118 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka) 1119 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n", 1120 eth_hdr->h_source, eth_hdr->h_dest); 1121 1122 skb->dev = bnx2fc_from_ctlr(fip)->netdev; 1123 dev_queue_xmit(skb); 1124 } 1125 1126 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) 1127 { 1128 struct Scsi_Host *shost = vport_to_shost(vport); 1129 struct fc_lport *n_port = shost_priv(shost); 1130 struct fcoe_port *port = lport_priv(n_port); 1131 struct bnx2fc_interface *interface = port->priv; 1132 struct net_device *netdev = interface->netdev; 1133 struct fc_lport *vn_port; 1134 int rc; 1135 char buf[32]; 1136 1137 rc = fcoe_validate_vport_create(vport); 1138 if (rc) { 1139 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1140 printk(KERN_ERR PFX "Failed to create vport, " 1141 "WWPN (0x%s) already exists\n", 1142 buf); 1143 return rc; 1144 } 1145 1146 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1147 printk(KERN_ERR PFX "vn ports cannot be created on" 1148 "this interface\n"); 1149 return -EIO; 1150 } 1151 rtnl_lock(); 1152 mutex_lock(&bnx2fc_dev_lock); 1153 vn_port = bnx2fc_if_create(interface, &vport->dev, 1); 1154 mutex_unlock(&bnx2fc_dev_lock); 1155 rtnl_unlock(); 1156 1157 if (!vn_port) { 1158 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", 1159 netdev->name); 1160 return -EIO; 1161 } 1162 1163 if (bnx2fc_devloss_tmo) 1164 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo; 1165 1166 if (disabled) { 1167 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1168 } else { 1169 vn_port->boot_time = jiffies; 1170 fc_lport_init(vn_port); 1171 fc_fabric_login(vn_port); 1172 fc_vport_setlink(vn_port); 1173 } 1174 return 0; 1175 } 1176 1177 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) 1178 { 1179 struct bnx2fc_lport *blport, *tmp; 1180 1181 spin_lock_bh(&hba->hba_lock); 1182 list_for_each_entry_safe(blport, tmp, &hba->vports, list) { 1183 if (blport->lport == lport) { 1184 list_del(&blport->list); 1185 kfree(blport); 1186 } 1187 } 1188 spin_unlock_bh(&hba->hba_lock); 1189 } 1190 1191 static int bnx2fc_vport_destroy(struct fc_vport *vport) 1192 { 1193 struct Scsi_Host *shost = vport_to_shost(vport); 1194 struct fc_lport *n_port = shost_priv(shost); 1195 struct fc_lport *vn_port = vport->dd_data; 1196 struct fcoe_port *port = lport_priv(vn_port); 1197 struct bnx2fc_interface *interface = port->priv; 1198 struct fc_lport *v_port; 1199 bool found = false; 1200 1201 mutex_lock(&n_port->lp_mutex); 1202 list_for_each_entry(v_port, &n_port->vports, list) 1203 if (v_port->vport == vport) { 1204 found = true; 1205 break; 1206 } 1207 1208 if (!found) { 1209 mutex_unlock(&n_port->lp_mutex); 1210 return -ENOENT; 1211 } 1212 list_del(&vn_port->list); 1213 mutex_unlock(&n_port->lp_mutex); 1214 bnx2fc_free_vport(interface->hba, port->lport); 1215 bnx2fc_port_shutdown(port->lport); 1216 bnx2fc_interface_put(interface); 1217 queue_work(bnx2fc_wq, &port->destroy_work); 1218 return 0; 1219 } 1220 1221 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) 1222 { 1223 struct fc_lport *lport = vport->dd_data; 1224 1225 if (disable) { 1226 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1227 fc_fabric_logoff(lport); 1228 } else { 1229 lport->boot_time = jiffies; 1230 fc_fabric_login(lport); 1231 fc_vport_setlink(lport); 1232 } 1233 return 0; 1234 } 1235 1236 1237 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) 1238 { 1239 struct net_device *netdev = interface->netdev; 1240 struct net_device *physdev = interface->hba->phys_dev; 1241 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1242 struct netdev_hw_addr *ha; 1243 int sel_san_mac = 0; 1244 1245 /* setup Source MAC Address */ 1246 rcu_read_lock(); 1247 for_each_dev_addr(physdev, ha) { 1248 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", 1249 ha->type); 1250 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], 1251 ha->addr[1], ha->addr[2], ha->addr[3], 1252 ha->addr[4], ha->addr[5]); 1253 1254 if ((ha->type == NETDEV_HW_ADDR_T_SAN) && 1255 (is_valid_ether_addr(ha->addr))) { 1256 memcpy(ctlr->ctl_src_addr, ha->addr, 1257 ETH_ALEN); 1258 sel_san_mac = 1; 1259 BNX2FC_MISC_DBG("Found SAN MAC\n"); 1260 } 1261 } 1262 rcu_read_unlock(); 1263 1264 if (!sel_san_mac) 1265 return -ENODEV; 1266 1267 interface->fip_packet_type.func = bnx2fc_fip_recv; 1268 interface->fip_packet_type.type = htons(ETH_P_FIP); 1269 interface->fip_packet_type.dev = netdev; 1270 dev_add_pack(&interface->fip_packet_type); 1271 1272 interface->fcoe_packet_type.func = bnx2fc_rcv; 1273 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); 1274 interface->fcoe_packet_type.dev = netdev; 1275 dev_add_pack(&interface->fcoe_packet_type); 1276 1277 return 0; 1278 } 1279 1280 static int bnx2fc_attach_transport(void) 1281 { 1282 bnx2fc_transport_template = 1283 fc_attach_transport(&bnx2fc_transport_function); 1284 1285 if (bnx2fc_transport_template == NULL) { 1286 printk(KERN_ERR PFX "Failed to attach FC transport\n"); 1287 return -ENODEV; 1288 } 1289 1290 bnx2fc_vport_xport_template = 1291 fc_attach_transport(&bnx2fc_vport_xport_function); 1292 if (bnx2fc_vport_xport_template == NULL) { 1293 printk(KERN_ERR PFX 1294 "Failed to attach FC transport for vport\n"); 1295 fc_release_transport(bnx2fc_transport_template); 1296 bnx2fc_transport_template = NULL; 1297 return -ENODEV; 1298 } 1299 return 0; 1300 } 1301 static void bnx2fc_release_transport(void) 1302 { 1303 fc_release_transport(bnx2fc_transport_template); 1304 fc_release_transport(bnx2fc_vport_xport_template); 1305 bnx2fc_transport_template = NULL; 1306 bnx2fc_vport_xport_template = NULL; 1307 } 1308 1309 static void bnx2fc_interface_release(struct kref *kref) 1310 { 1311 struct fcoe_ctlr_device *ctlr_dev; 1312 struct bnx2fc_interface *interface; 1313 struct fcoe_ctlr *ctlr; 1314 struct net_device *netdev; 1315 1316 interface = container_of(kref, struct bnx2fc_interface, kref); 1317 BNX2FC_MISC_DBG("Interface is being released\n"); 1318 1319 ctlr = bnx2fc_to_ctlr(interface); 1320 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); 1321 netdev = interface->netdev; 1322 1323 /* tear-down FIP controller */ 1324 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) 1325 fcoe_ctlr_destroy(ctlr); 1326 1327 fcoe_ctlr_device_delete(ctlr_dev); 1328 1329 dev_put(netdev); 1330 module_put(THIS_MODULE); 1331 } 1332 1333 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) 1334 { 1335 kref_get(&interface->kref); 1336 } 1337 1338 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) 1339 { 1340 kref_put(&interface->kref, bnx2fc_interface_release); 1341 } 1342 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) 1343 { 1344 /* Free the command manager */ 1345 if (hba->cmd_mgr) { 1346 bnx2fc_cmd_mgr_free(hba->cmd_mgr); 1347 hba->cmd_mgr = NULL; 1348 } 1349 kfree(hba->tgt_ofld_list); 1350 bnx2fc_unbind_pcidev(hba); 1351 kfree(hba); 1352 } 1353 1354 /** 1355 * bnx2fc_hba_create - create a new bnx2fc hba 1356 * 1357 * @cnic: pointer to cnic device 1358 * 1359 * Creates a new FCoE hba on the given device. 1360 * 1361 */ 1362 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) 1363 { 1364 struct bnx2fc_hba *hba; 1365 struct fcoe_capabilities *fcoe_cap; 1366 int rc; 1367 1368 hba = kzalloc(sizeof(*hba), GFP_KERNEL); 1369 if (!hba) { 1370 printk(KERN_ERR PFX "Unable to allocate hba structure\n"); 1371 return NULL; 1372 } 1373 spin_lock_init(&hba->hba_lock); 1374 mutex_init(&hba->hba_mutex); 1375 mutex_init(&hba->hba_stats_mutex); 1376 1377 hba->cnic = cnic; 1378 1379 hba->max_tasks = cnic->max_fcoe_exchanges; 1380 hba->elstm_xids = (hba->max_tasks / 2); 1381 hba->max_outstanding_cmds = hba->elstm_xids; 1382 hba->max_xid = (hba->max_tasks - 1); 1383 1384 rc = bnx2fc_bind_pcidev(hba); 1385 if (rc) { 1386 printk(KERN_ERR PFX "create_adapter: bind error\n"); 1387 goto bind_err; 1388 } 1389 hba->phys_dev = cnic->netdev; 1390 hba->next_conn_id = 0; 1391 1392 hba->tgt_ofld_list = 1393 kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *), 1394 GFP_KERNEL); 1395 if (!hba->tgt_ofld_list) { 1396 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); 1397 goto tgtofld_err; 1398 } 1399 1400 hba->num_ofld_sess = 0; 1401 1402 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba); 1403 if (!hba->cmd_mgr) { 1404 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); 1405 goto cmgr_err; 1406 } 1407 fcoe_cap = &hba->fcoe_cap; 1408 1409 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << 1410 FCOE_IOS_PER_CONNECTION_SHIFT; 1411 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << 1412 FCOE_LOGINS_PER_PORT_SHIFT; 1413 fcoe_cap->capability2 = hba->max_outstanding_cmds << 1414 FCOE_NUMBER_OF_EXCHANGES_SHIFT; 1415 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << 1416 FCOE_NPIV_WWN_PER_PORT_SHIFT; 1417 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << 1418 FCOE_TARGETS_SUPPORTED_SHIFT; 1419 fcoe_cap->capability3 |= hba->max_outstanding_cmds << 1420 FCOE_OUTSTANDING_COMMANDS_SHIFT; 1421 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; 1422 1423 init_waitqueue_head(&hba->shutdown_wait); 1424 init_waitqueue_head(&hba->destroy_wait); 1425 INIT_LIST_HEAD(&hba->vports); 1426 1427 return hba; 1428 1429 cmgr_err: 1430 kfree(hba->tgt_ofld_list); 1431 tgtofld_err: 1432 bnx2fc_unbind_pcidev(hba); 1433 bind_err: 1434 kfree(hba); 1435 return NULL; 1436 } 1437 1438 static struct bnx2fc_interface * 1439 bnx2fc_interface_create(struct bnx2fc_hba *hba, 1440 struct net_device *netdev, 1441 enum fip_mode fip_mode) 1442 { 1443 struct fcoe_ctlr_device *ctlr_dev; 1444 struct bnx2fc_interface *interface; 1445 struct fcoe_ctlr *ctlr; 1446 int size; 1447 int rc = 0; 1448 1449 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); 1450 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, 1451 size); 1452 if (!ctlr_dev) { 1453 printk(KERN_ERR PFX "Unable to allocate interface structure\n"); 1454 return NULL; 1455 } 1456 ctlr = fcoe_ctlr_device_priv(ctlr_dev); 1457 ctlr->cdev = ctlr_dev; 1458 interface = fcoe_ctlr_priv(ctlr); 1459 dev_hold(netdev); 1460 kref_init(&interface->kref); 1461 interface->hba = hba; 1462 interface->netdev = netdev; 1463 1464 /* Initialize FIP */ 1465 fcoe_ctlr_init(ctlr, fip_mode); 1466 ctlr->send = bnx2fc_fip_send; 1467 ctlr->update_mac = bnx2fc_update_src_mac; 1468 ctlr->get_src_addr = bnx2fc_get_src_mac; 1469 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); 1470 1471 rc = bnx2fc_interface_setup(interface); 1472 if (!rc) 1473 return interface; 1474 1475 fcoe_ctlr_destroy(ctlr); 1476 dev_put(netdev); 1477 fcoe_ctlr_device_delete(ctlr_dev); 1478 return NULL; 1479 } 1480 1481 /** 1482 * bnx2fc_if_create - Create FCoE instance on a given interface 1483 * 1484 * @interface: FCoE interface to create a local port on 1485 * @parent: Device pointer to be the parent in sysfs for the SCSI host 1486 * @npiv: Indicates if the port is vport or not 1487 * 1488 * Creates a fc_lport instance and a Scsi_Host instance and configure them. 1489 * 1490 * Returns: Allocated fc_lport or an error pointer 1491 */ 1492 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 1493 struct device *parent, int npiv) 1494 { 1495 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1496 struct fc_lport *lport, *n_port; 1497 struct fcoe_port *port; 1498 struct Scsi_Host *shost; 1499 struct fc_vport *vport = dev_to_vport(parent); 1500 struct bnx2fc_lport *blport; 1501 struct bnx2fc_hba *hba = interface->hba; 1502 int rc = 0; 1503 1504 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); 1505 if (!blport) { 1506 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); 1507 return NULL; 1508 } 1509 1510 /* Allocate Scsi_Host structure */ 1511 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds; 1512 if (!npiv) 1513 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); 1514 else 1515 lport = libfc_vport_create(vport, sizeof(*port)); 1516 1517 if (!lport) { 1518 printk(KERN_ERR PFX "could not allocate scsi host structure\n"); 1519 goto free_blport; 1520 } 1521 shost = lport->host; 1522 port = lport_priv(lport); 1523 port->lport = lport; 1524 port->priv = interface; 1525 port->get_netdev = bnx2fc_netdev; 1526 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work); 1527 1528 /* Configure fcoe_port */ 1529 rc = bnx2fc_lport_config(lport); 1530 if (rc) 1531 goto lp_config_err; 1532 1533 if (npiv) { 1534 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", 1535 vport->node_name, vport->port_name); 1536 fc_set_wwnn(lport, vport->node_name); 1537 fc_set_wwpn(lport, vport->port_name); 1538 } 1539 /* Configure netdev and networking properties of the lport */ 1540 rc = bnx2fc_net_config(lport, interface->netdev); 1541 if (rc) { 1542 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); 1543 goto lp_config_err; 1544 } 1545 1546 rc = bnx2fc_shost_config(lport, parent); 1547 if (rc) { 1548 printk(KERN_ERR PFX "Couldn't configure shost for %s\n", 1549 interface->netdev->name); 1550 goto lp_config_err; 1551 } 1552 1553 /* Initialize the libfc library */ 1554 rc = bnx2fc_libfc_config(lport); 1555 if (rc) { 1556 printk(KERN_ERR PFX "Couldn't configure libfc\n"); 1557 goto shost_err; 1558 } 1559 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1560 1561 if (bnx2fc_devloss_tmo) 1562 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo; 1563 1564 /* Allocate exchange manager */ 1565 if (!npiv) 1566 rc = bnx2fc_em_config(lport, hba); 1567 else { 1568 shost = vport_to_shost(vport); 1569 n_port = shost_priv(shost); 1570 rc = fc_exch_mgr_list_clone(n_port, lport); 1571 } 1572 1573 if (rc) { 1574 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); 1575 goto shost_err; 1576 } 1577 1578 bnx2fc_interface_get(interface); 1579 1580 spin_lock_bh(&hba->hba_lock); 1581 blport->lport = lport; 1582 list_add_tail(&blport->list, &hba->vports); 1583 spin_unlock_bh(&hba->hba_lock); 1584 1585 return lport; 1586 1587 shost_err: 1588 scsi_remove_host(shost); 1589 lp_config_err: 1590 scsi_host_put(lport->host); 1591 free_blport: 1592 kfree(blport); 1593 return NULL; 1594 } 1595 1596 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) 1597 { 1598 /* Dont listen for Ethernet packets anymore */ 1599 __dev_remove_pack(&interface->fcoe_packet_type); 1600 __dev_remove_pack(&interface->fip_packet_type); 1601 synchronize_net(); 1602 } 1603 1604 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) 1605 { 1606 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1607 struct fc_lport *lport = ctlr->lp; 1608 struct fcoe_port *port = lport_priv(lport); 1609 struct bnx2fc_hba *hba = interface->hba; 1610 1611 /* Stop the transmit retry timer */ 1612 del_timer_sync(&port->timer); 1613 1614 /* Free existing transmit skbs */ 1615 fcoe_clean_pending_queue(lport); 1616 1617 bnx2fc_net_cleanup(interface); 1618 1619 bnx2fc_free_vport(hba, lport); 1620 } 1621 1622 static void bnx2fc_if_destroy(struct fc_lport *lport) 1623 { 1624 1625 /* Free queued packets for the receive thread */ 1626 bnx2fc_clean_rx_queue(lport); 1627 1628 /* Detach from scsi-ml */ 1629 fc_remove_host(lport->host); 1630 scsi_remove_host(lport->host); 1631 1632 /* 1633 * Note that only the physical lport will have the exchange manager. 1634 * for vports, this function is NOP 1635 */ 1636 fc_exch_mgr_free(lport); 1637 1638 /* Free memory used by statistical counters */ 1639 fc_lport_free_stats(lport); 1640 1641 /* Release Scsi_Host */ 1642 scsi_host_put(lport->host); 1643 } 1644 1645 static void __bnx2fc_destroy(struct bnx2fc_interface *interface) 1646 { 1647 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1648 struct fc_lport *lport = ctlr->lp; 1649 struct fcoe_port *port = lport_priv(lport); 1650 1651 bnx2fc_interface_cleanup(interface); 1652 bnx2fc_stop(interface); 1653 list_del(&interface->list); 1654 bnx2fc_interface_put(interface); 1655 queue_work(bnx2fc_wq, &port->destroy_work); 1656 } 1657 1658 /** 1659 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface 1660 * 1661 * @netdev: The net device that the FCoE interface is on 1662 * 1663 * Called from sysfs. 1664 * 1665 * Returns: 0 for success 1666 */ 1667 static int bnx2fc_destroy(struct net_device *netdev) 1668 { 1669 struct bnx2fc_interface *interface = NULL; 1670 struct workqueue_struct *timer_work_queue; 1671 struct fcoe_ctlr *ctlr; 1672 int rc = 0; 1673 1674 rtnl_lock(); 1675 mutex_lock(&bnx2fc_dev_lock); 1676 1677 interface = bnx2fc_interface_lookup(netdev); 1678 ctlr = bnx2fc_to_ctlr(interface); 1679 if (!interface || !ctlr->lp) { 1680 rc = -ENODEV; 1681 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); 1682 goto netdev_err; 1683 } 1684 1685 timer_work_queue = interface->timer_work_queue; 1686 __bnx2fc_destroy(interface); 1687 destroy_workqueue(timer_work_queue); 1688 1689 netdev_err: 1690 mutex_unlock(&bnx2fc_dev_lock); 1691 rtnl_unlock(); 1692 return rc; 1693 } 1694 1695 static void bnx2fc_destroy_work(struct work_struct *work) 1696 { 1697 struct fcoe_port *port; 1698 struct fc_lport *lport; 1699 1700 port = container_of(work, struct fcoe_port, destroy_work); 1701 lport = port->lport; 1702 1703 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n"); 1704 1705 bnx2fc_if_destroy(lport); 1706 } 1707 1708 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) 1709 { 1710 bnx2fc_free_fw_resc(hba); 1711 bnx2fc_free_task_ctx(hba); 1712 } 1713 1714 /** 1715 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated 1716 * pci structure 1717 * 1718 * @hba: Adapter instance 1719 */ 1720 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) 1721 { 1722 if (bnx2fc_setup_task_ctx(hba)) 1723 goto mem_err; 1724 1725 if (bnx2fc_setup_fw_resc(hba)) 1726 goto mem_err; 1727 1728 return 0; 1729 mem_err: 1730 bnx2fc_unbind_adapter_devices(hba); 1731 return -ENOMEM; 1732 } 1733 1734 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) 1735 { 1736 struct cnic_dev *cnic; 1737 struct pci_dev *pdev; 1738 1739 if (!hba->cnic) { 1740 printk(KERN_ERR PFX "cnic is NULL\n"); 1741 return -ENODEV; 1742 } 1743 cnic = hba->cnic; 1744 pdev = hba->pcidev = cnic->pcidev; 1745 if (!hba->pcidev) 1746 return -ENODEV; 1747 1748 switch (pdev->device) { 1749 case PCI_DEVICE_ID_NX2_57710: 1750 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN); 1751 break; 1752 case PCI_DEVICE_ID_NX2_57711: 1753 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN); 1754 break; 1755 case PCI_DEVICE_ID_NX2_57712: 1756 case PCI_DEVICE_ID_NX2_57712_MF: 1757 case PCI_DEVICE_ID_NX2_57712_VF: 1758 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN); 1759 break; 1760 case PCI_DEVICE_ID_NX2_57800: 1761 case PCI_DEVICE_ID_NX2_57800_MF: 1762 case PCI_DEVICE_ID_NX2_57800_VF: 1763 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN); 1764 break; 1765 case PCI_DEVICE_ID_NX2_57810: 1766 case PCI_DEVICE_ID_NX2_57810_MF: 1767 case PCI_DEVICE_ID_NX2_57810_VF: 1768 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN); 1769 break; 1770 case PCI_DEVICE_ID_NX2_57840: 1771 case PCI_DEVICE_ID_NX2_57840_MF: 1772 case PCI_DEVICE_ID_NX2_57840_VF: 1773 case PCI_DEVICE_ID_NX2_57840_2_20: 1774 case PCI_DEVICE_ID_NX2_57840_4_10: 1775 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN); 1776 break; 1777 default: 1778 pr_err(PFX "Unknown device id 0x%x\n", pdev->device); 1779 break; 1780 } 1781 pci_dev_get(hba->pcidev); 1782 return 0; 1783 } 1784 1785 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) 1786 { 1787 if (hba->pcidev) { 1788 hba->chip_num[0] = '\0'; 1789 pci_dev_put(hba->pcidev); 1790 } 1791 hba->pcidev = NULL; 1792 } 1793 1794 /** 1795 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats 1796 * 1797 * @handle: transport handle pointing to adapter struture 1798 */ 1799 static int bnx2fc_ulp_get_stats(void *handle) 1800 { 1801 struct bnx2fc_hba *hba = handle; 1802 struct cnic_dev *cnic; 1803 struct fcoe_stats_info *stats_addr; 1804 1805 if (!hba) 1806 return -EINVAL; 1807 1808 cnic = hba->cnic; 1809 stats_addr = &cnic->stats_addr->fcoe_stat; 1810 if (!stats_addr) 1811 return -EINVAL; 1812 1813 strncpy(stats_addr->version, BNX2FC_VERSION, 1814 sizeof(stats_addr->version)); 1815 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX; 1816 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX; 1817 1818 return 0; 1819 } 1820 1821 1822 /** 1823 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance 1824 * 1825 * @handle: transport handle pointing to adapter structure 1826 * 1827 * This function maps adapter structure to pcidev structure and initiates 1828 * firmware handshake to enable/initialize on-chip FCoE components. 1829 * This bnx2fc - cnic interface api callback is used after following 1830 * conditions are met - 1831 * a) underlying network interface is up (marked by event NETDEV_UP 1832 * from netdev 1833 * b) bnx2fc adatper structure is registered. 1834 */ 1835 static void bnx2fc_ulp_start(void *handle) 1836 { 1837 struct bnx2fc_hba *hba = handle; 1838 struct bnx2fc_interface *interface; 1839 struct fcoe_ctlr *ctlr; 1840 struct fc_lport *lport; 1841 1842 mutex_lock(&bnx2fc_dev_lock); 1843 1844 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1845 bnx2fc_fw_init(hba); 1846 1847 BNX2FC_MISC_DBG("bnx2fc started.\n"); 1848 1849 list_for_each_entry(interface, &if_list, list) { 1850 if (interface->hba == hba) { 1851 ctlr = bnx2fc_to_ctlr(interface); 1852 lport = ctlr->lp; 1853 /* Kick off Fabric discovery*/ 1854 printk(KERN_ERR PFX "ulp_init: start discovery\n"); 1855 lport->tt.frame_send = bnx2fc_xmit; 1856 bnx2fc_start_disc(interface); 1857 } 1858 } 1859 1860 mutex_unlock(&bnx2fc_dev_lock); 1861 } 1862 1863 static void bnx2fc_port_shutdown(struct fc_lport *lport) 1864 { 1865 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1866 fc_fabric_logoff(lport); 1867 fc_lport_destroy(lport); 1868 } 1869 1870 static void bnx2fc_stop(struct bnx2fc_interface *interface) 1871 { 1872 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1873 struct fc_lport *lport; 1874 struct fc_lport *vport; 1875 1876 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) 1877 return; 1878 1879 lport = ctlr->lp; 1880 bnx2fc_port_shutdown(lport); 1881 1882 mutex_lock(&lport->lp_mutex); 1883 list_for_each_entry(vport, &lport->vports, list) 1884 fc_host_port_type(vport->host) = 1885 FC_PORTTYPE_UNKNOWN; 1886 mutex_unlock(&lport->lp_mutex); 1887 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1888 fcoe_ctlr_link_down(ctlr); 1889 fcoe_clean_pending_queue(lport); 1890 } 1891 1892 static int bnx2fc_fw_init(struct bnx2fc_hba *hba) 1893 { 1894 #define BNX2FC_INIT_POLL_TIME (1000 / HZ) 1895 int rc = -1; 1896 int i = HZ; 1897 1898 rc = bnx2fc_bind_adapter_devices(hba); 1899 if (rc) { 1900 printk(KERN_ALERT PFX 1901 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); 1902 goto err_out; 1903 } 1904 1905 rc = bnx2fc_send_fw_fcoe_init_msg(hba); 1906 if (rc) { 1907 printk(KERN_ALERT PFX 1908 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); 1909 goto err_unbind; 1910 } 1911 1912 /* 1913 * Wait until the adapter init message is complete, and adapter 1914 * state is UP. 1915 */ 1916 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) 1917 msleep(BNX2FC_INIT_POLL_TIME); 1918 1919 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { 1920 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " 1921 "Ignoring...\n", 1922 hba->cnic->netdev->name); 1923 rc = -1; 1924 goto err_unbind; 1925 } 1926 1927 1928 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); 1929 return 0; 1930 1931 err_unbind: 1932 bnx2fc_unbind_adapter_devices(hba); 1933 err_out: 1934 return rc; 1935 } 1936 1937 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) 1938 { 1939 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { 1940 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { 1941 timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer, 1942 0); 1943 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + 1944 jiffies; 1945 add_timer(&hba->destroy_timer); 1946 wait_event_interruptible(hba->destroy_wait, 1947 test_bit(BNX2FC_FLAG_DESTROY_CMPL, 1948 &hba->flags)); 1949 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 1950 /* This should never happen */ 1951 if (signal_pending(current)) 1952 flush_signals(current); 1953 1954 del_timer_sync(&hba->destroy_timer); 1955 } 1956 bnx2fc_unbind_adapter_devices(hba); 1957 } 1958 } 1959 1960 /** 1961 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance 1962 * 1963 * @handle: transport handle pointing to adapter structure 1964 * 1965 * Driver checks if adapter is already in shutdown mode, if not start 1966 * the shutdown process. 1967 */ 1968 static void bnx2fc_ulp_stop(void *handle) 1969 { 1970 struct bnx2fc_hba *hba = handle; 1971 struct bnx2fc_interface *interface; 1972 1973 printk(KERN_ERR "ULP_STOP\n"); 1974 1975 mutex_lock(&bnx2fc_dev_lock); 1976 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1977 goto exit; 1978 list_for_each_entry(interface, &if_list, list) { 1979 if (interface->hba == hba) 1980 bnx2fc_stop(interface); 1981 } 1982 BUG_ON(hba->num_ofld_sess != 0); 1983 1984 mutex_lock(&hba->hba_mutex); 1985 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 1986 clear_bit(ADAPTER_STATE_GOING_DOWN, 1987 &hba->adapter_state); 1988 1989 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 1990 mutex_unlock(&hba->hba_mutex); 1991 1992 bnx2fc_fw_destroy(hba); 1993 exit: 1994 mutex_unlock(&bnx2fc_dev_lock); 1995 } 1996 1997 static void bnx2fc_start_disc(struct bnx2fc_interface *interface) 1998 { 1999 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 2000 struct fc_lport *lport; 2001 int wait_cnt = 0; 2002 2003 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2004 /* Kick off FIP/FLOGI */ 2005 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 2006 printk(KERN_ERR PFX "Init not done yet\n"); 2007 return; 2008 } 2009 2010 lport = ctlr->lp; 2011 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); 2012 2013 if (!bnx2fc_link_ok(lport) && interface->enabled) { 2014 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); 2015 fcoe_ctlr_link_up(ctlr); 2016 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2017 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2018 } 2019 2020 /* wait for the FCF to be selected before issuing FLOGI */ 2021 while (!ctlr->sel_fcf) { 2022 msleep(250); 2023 /* give up after 3 secs */ 2024 if (++wait_cnt > 12) 2025 break; 2026 } 2027 2028 /* Reset max receive frame size to default */ 2029 if (fc_set_mfs(lport, BNX2FC_MFS)) 2030 return; 2031 2032 fc_lport_init(lport); 2033 fc_fabric_login(lport); 2034 } 2035 2036 2037 /** 2038 * bnx2fc_ulp_init - Initialize an adapter instance 2039 * 2040 * @dev : cnic device handle 2041 * Called from cnic_register_driver() context to initialize all 2042 * enumerated cnic devices. This routine allocates adapter structure 2043 * and other device specific resources. 2044 */ 2045 static void bnx2fc_ulp_init(struct cnic_dev *dev) 2046 { 2047 struct bnx2fc_hba *hba; 2048 int rc = 0; 2049 2050 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2051 /* bnx2fc works only when bnx2x is loaded */ 2052 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || 2053 (dev->max_fcoe_conn == 0)) { 2054 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," 2055 " flags: %lx fcoe_conn: %d\n", 2056 dev->netdev->name, dev->flags, dev->max_fcoe_conn); 2057 return; 2058 } 2059 2060 hba = bnx2fc_hba_create(dev); 2061 if (!hba) { 2062 printk(KERN_ERR PFX "hba initialization failed\n"); 2063 return; 2064 } 2065 2066 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name); 2067 2068 /* Add HBA to the adapter list */ 2069 mutex_lock(&bnx2fc_dev_lock); 2070 list_add_tail(&hba->list, &adapter_list); 2071 adapter_count++; 2072 mutex_unlock(&bnx2fc_dev_lock); 2073 2074 dev->fcoe_cap = &hba->fcoe_cap; 2075 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2076 rc = dev->register_device(dev, CNIC_ULP_FCOE, 2077 (void *) hba); 2078 if (rc) 2079 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); 2080 else 2081 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2082 } 2083 2084 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */ 2085 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr) 2086 { 2087 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2088 2089 if (interface->enabled == true) { 2090 if (!ctlr->lp) { 2091 pr_err(PFX "__bnx2fc_disable: lport not found\n"); 2092 return -ENODEV; 2093 } else { 2094 interface->enabled = false; 2095 fcoe_ctlr_link_down(ctlr); 2096 fcoe_clean_pending_queue(ctlr->lp); 2097 } 2098 } 2099 return 0; 2100 } 2101 2102 /* 2103 * Deperecated: Use bnx2fc_enabled() 2104 */ 2105 static int bnx2fc_disable(struct net_device *netdev) 2106 { 2107 struct bnx2fc_interface *interface; 2108 struct fcoe_ctlr *ctlr; 2109 int rc = 0; 2110 2111 rtnl_lock(); 2112 mutex_lock(&bnx2fc_dev_lock); 2113 2114 interface = bnx2fc_interface_lookup(netdev); 2115 ctlr = bnx2fc_to_ctlr(interface); 2116 2117 if (!interface) { 2118 rc = -ENODEV; 2119 pr_err(PFX "bnx2fc_disable: interface not found\n"); 2120 } else { 2121 rc = __bnx2fc_disable(ctlr); 2122 } 2123 mutex_unlock(&bnx2fc_dev_lock); 2124 rtnl_unlock(); 2125 return rc; 2126 } 2127 2128 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport, 2129 struct cnic_fc_npiv_tbl *npiv_tbl) 2130 { 2131 struct fc_vport_identifiers vpid; 2132 uint i, created = 0; 2133 u64 wwnn = 0; 2134 char wwpn_str[32]; 2135 char wwnn_str[32]; 2136 2137 if (npiv_tbl->count > MAX_NPIV_ENTRIES) { 2138 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n"); 2139 goto done; 2140 } 2141 2142 /* Sanity check the first entry to make sure it's not 0 */ 2143 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 && 2144 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) { 2145 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n"); 2146 goto done; 2147 } 2148 2149 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR; 2150 vpid.vport_type = FC_PORTTYPE_NPIV; 2151 vpid.disable = false; 2152 2153 for (i = 0; i < npiv_tbl->count; i++) { 2154 wwnn = wwn_to_u64(npiv_tbl->wwnn[i]); 2155 if (wwnn == 0) { 2156 /* 2157 * If we get a 0 element from for the WWNN then assume 2158 * the WWNN should be the same as the physical port. 2159 */ 2160 wwnn = lport->wwnn; 2161 } 2162 vpid.node_name = wwnn; 2163 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]); 2164 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name), 2165 "NPIV[%u]:%016llx-%016llx", 2166 created, vpid.port_name, vpid.node_name); 2167 fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str)); 2168 fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str)); 2169 BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str, 2170 wwpn_str); 2171 if (fc_vport_create(lport->host, 0, &vpid)) 2172 created++; 2173 else 2174 BNX2FC_HBA_DBG(lport, "Failed to create vport\n"); 2175 } 2176 done: 2177 return created; 2178 } 2179 2180 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr) 2181 { 2182 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2183 struct bnx2fc_hba *hba; 2184 struct cnic_fc_npiv_tbl *npiv_tbl; 2185 struct fc_lport *lport; 2186 2187 if (interface->enabled == false) { 2188 if (!ctlr->lp) { 2189 pr_err(PFX "__bnx2fc_enable: lport not found\n"); 2190 return -ENODEV; 2191 } else if (!bnx2fc_link_ok(ctlr->lp)) { 2192 fcoe_ctlr_link_up(ctlr); 2193 interface->enabled = true; 2194 } 2195 } 2196 2197 /* Create static NPIV ports if any are contained in NVRAM */ 2198 hba = interface->hba; 2199 lport = ctlr->lp; 2200 2201 if (!hba) 2202 goto done; 2203 2204 if (!hba->cnic) 2205 goto done; 2206 2207 if (!lport) 2208 goto done; 2209 2210 if (!lport->host) 2211 goto done; 2212 2213 if (!hba->cnic->get_fc_npiv_tbl) 2214 goto done; 2215 2216 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL); 2217 if (!npiv_tbl) 2218 goto done; 2219 2220 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl)) 2221 goto done_free; 2222 2223 bnx2fc_npiv_create_vports(lport, npiv_tbl); 2224 done_free: 2225 kfree(npiv_tbl); 2226 done: 2227 return 0; 2228 } 2229 2230 /* 2231 * Deprecated: Use bnx2fc_enabled() 2232 */ 2233 static int bnx2fc_enable(struct net_device *netdev) 2234 { 2235 struct bnx2fc_interface *interface; 2236 struct fcoe_ctlr *ctlr; 2237 int rc = 0; 2238 2239 rtnl_lock(); 2240 mutex_lock(&bnx2fc_dev_lock); 2241 2242 interface = bnx2fc_interface_lookup(netdev); 2243 ctlr = bnx2fc_to_ctlr(interface); 2244 if (!interface) { 2245 rc = -ENODEV; 2246 pr_err(PFX "bnx2fc_enable: interface not found\n"); 2247 } else { 2248 rc = __bnx2fc_enable(ctlr); 2249 } 2250 2251 mutex_unlock(&bnx2fc_dev_lock); 2252 rtnl_unlock(); 2253 return rc; 2254 } 2255 2256 /** 2257 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller 2258 * @cdev: The FCoE Controller that is being enabled or disabled 2259 * 2260 * fcoe_sysfs will ensure that the state of 'enabled' has 2261 * changed, so no checking is necessary here. This routine simply 2262 * calls fcoe_enable or fcoe_disable, both of which are deprecated. 2263 * When those routines are removed the functionality can be merged 2264 * here. 2265 */ 2266 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev) 2267 { 2268 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); 2269 2270 switch (cdev->enabled) { 2271 case FCOE_CTLR_ENABLED: 2272 return __bnx2fc_enable(ctlr); 2273 case FCOE_CTLR_DISABLED: 2274 return __bnx2fc_disable(ctlr); 2275 case FCOE_CTLR_UNUSED: 2276 default: 2277 return -ENOTSUPP; 2278 }; 2279 } 2280 2281 enum bnx2fc_create_link_state { 2282 BNX2FC_CREATE_LINK_DOWN, 2283 BNX2FC_CREATE_LINK_UP, 2284 }; 2285 2286 /** 2287 * _bnx2fc_create() - Create bnx2fc FCoE interface 2288 * @netdev : The net_device object the Ethernet interface to create on 2289 * @fip_mode: The FIP mode for this creation 2290 * @link_state: The ctlr link state on creation 2291 * 2292 * Called from either the libfcoe 'create' module parameter 2293 * via fcoe_create or from fcoe_syfs's ctlr_create file. 2294 * 2295 * libfcoe's 'create' module parameter is deprecated so some 2296 * consolidation of code can be done when that interface is 2297 * removed. 2298 * 2299 * Returns: 0 for success 2300 */ 2301 static int _bnx2fc_create(struct net_device *netdev, 2302 enum fip_mode fip_mode, 2303 enum bnx2fc_create_link_state link_state) 2304 { 2305 struct fcoe_ctlr_device *cdev; 2306 struct fcoe_ctlr *ctlr; 2307 struct bnx2fc_interface *interface; 2308 struct bnx2fc_hba *hba; 2309 struct net_device *phys_dev = netdev; 2310 struct fc_lport *lport; 2311 struct ethtool_drvinfo drvinfo; 2312 int rc = 0; 2313 int vlan_id = 0; 2314 2315 BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); 2316 if (fip_mode != FIP_MODE_FABRIC) { 2317 printk(KERN_ERR "fip mode not FABRIC\n"); 2318 return -EIO; 2319 } 2320 2321 rtnl_lock(); 2322 2323 mutex_lock(&bnx2fc_dev_lock); 2324 2325 if (!try_module_get(THIS_MODULE)) { 2326 rc = -EINVAL; 2327 goto mod_err; 2328 } 2329 2330 /* obtain physical netdev */ 2331 if (is_vlan_dev(netdev)) 2332 phys_dev = vlan_dev_real_dev(netdev); 2333 2334 /* verify if the physical device is a netxtreme2 device */ 2335 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { 2336 memset(&drvinfo, 0, sizeof(drvinfo)); 2337 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); 2338 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { 2339 printk(KERN_ERR PFX "Not a netxtreme2 device\n"); 2340 rc = -EINVAL; 2341 goto netdev_err; 2342 } 2343 } else { 2344 printk(KERN_ERR PFX "unable to obtain drv_info\n"); 2345 rc = -EINVAL; 2346 goto netdev_err; 2347 } 2348 2349 /* obtain interface and initialize rest of the structure */ 2350 hba = bnx2fc_hba_lookup(phys_dev); 2351 if (!hba) { 2352 rc = -ENODEV; 2353 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); 2354 goto netdev_err; 2355 } 2356 2357 if (bnx2fc_interface_lookup(netdev)) { 2358 rc = -EEXIST; 2359 goto netdev_err; 2360 } 2361 2362 interface = bnx2fc_interface_create(hba, netdev, fip_mode); 2363 if (!interface) { 2364 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); 2365 rc = -ENOMEM; 2366 goto netdev_err; 2367 } 2368 2369 if (is_vlan_dev(netdev)) { 2370 vlan_id = vlan_dev_vlan_id(netdev); 2371 interface->vlan_enabled = 1; 2372 } 2373 2374 ctlr = bnx2fc_to_ctlr(interface); 2375 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 2376 interface->vlan_id = vlan_id; 2377 interface->tm_timeout = BNX2FC_TM_TIMEOUT; 2378 2379 interface->timer_work_queue = 2380 create_singlethread_workqueue("bnx2fc_timer_wq"); 2381 if (!interface->timer_work_queue) { 2382 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); 2383 rc = -EINVAL; 2384 goto ifput_err; 2385 } 2386 2387 lport = bnx2fc_if_create(interface, &cdev->dev, 0); 2388 if (!lport) { 2389 printk(KERN_ERR PFX "Failed to create interface (%s)\n", 2390 netdev->name); 2391 rc = -EINVAL; 2392 goto if_create_err; 2393 } 2394 2395 /* Add interface to if_list */ 2396 list_add_tail(&interface->list, &if_list); 2397 2398 lport->boot_time = jiffies; 2399 2400 /* Make this master N_port */ 2401 ctlr->lp = lport; 2402 2403 if (link_state == BNX2FC_CREATE_LINK_UP) 2404 cdev->enabled = FCOE_CTLR_ENABLED; 2405 else 2406 cdev->enabled = FCOE_CTLR_DISABLED; 2407 2408 if (link_state == BNX2FC_CREATE_LINK_UP && 2409 !bnx2fc_link_ok(lport)) { 2410 fcoe_ctlr_link_up(ctlr); 2411 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2412 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2413 } 2414 2415 BNX2FC_HBA_DBG(lport, "create: START DISC\n"); 2416 bnx2fc_start_disc(interface); 2417 2418 if (link_state == BNX2FC_CREATE_LINK_UP) 2419 interface->enabled = true; 2420 2421 /* 2422 * Release from kref_init in bnx2fc_interface_setup, on success 2423 * lport should be holding a reference taken in bnx2fc_if_create 2424 */ 2425 bnx2fc_interface_put(interface); 2426 /* put netdev that was held while calling dev_get_by_name */ 2427 mutex_unlock(&bnx2fc_dev_lock); 2428 rtnl_unlock(); 2429 return 0; 2430 2431 if_create_err: 2432 destroy_workqueue(interface->timer_work_queue); 2433 ifput_err: 2434 bnx2fc_net_cleanup(interface); 2435 bnx2fc_interface_put(interface); 2436 goto mod_err; 2437 netdev_err: 2438 module_put(THIS_MODULE); 2439 mod_err: 2440 mutex_unlock(&bnx2fc_dev_lock); 2441 rtnl_unlock(); 2442 return rc; 2443 } 2444 2445 /** 2446 * bnx2fc_create() - Create a bnx2fc interface 2447 * @netdev : The net_device object the Ethernet interface to create on 2448 * @fip_mode: The FIP mode for this creation 2449 * 2450 * Called from fcoe transport 2451 * 2452 * Returns: 0 for success 2453 */ 2454 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode) 2455 { 2456 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP); 2457 } 2458 2459 /** 2460 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs 2461 * @netdev: The net_device to be used by the allocated FCoE Controller 2462 * 2463 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr 2464 * in a link_down state. The allows the user an opportunity to configure 2465 * the FCoE Controller from sysfs before enabling the FCoE Controller. 2466 * 2467 * Creating in with this routine starts the FCoE Controller in Fabric 2468 * mode. The user can change to VN2VN or another mode before enabling. 2469 */ 2470 static int bnx2fc_ctlr_alloc(struct net_device *netdev) 2471 { 2472 return _bnx2fc_create(netdev, FIP_MODE_FABRIC, 2473 BNX2FC_CREATE_LINK_DOWN); 2474 } 2475 2476 /** 2477 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance 2478 * 2479 * @cnic: Pointer to cnic device instance 2480 * 2481 **/ 2482 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) 2483 { 2484 struct bnx2fc_hba *hba; 2485 2486 /* Called with bnx2fc_dev_lock held */ 2487 list_for_each_entry(hba, &adapter_list, list) { 2488 if (hba->cnic == cnic) 2489 return hba; 2490 } 2491 return NULL; 2492 } 2493 2494 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 2495 *netdev) 2496 { 2497 struct bnx2fc_interface *interface; 2498 2499 /* Called with bnx2fc_dev_lock held */ 2500 list_for_each_entry(interface, &if_list, list) { 2501 if (interface->netdev == netdev) 2502 return interface; 2503 } 2504 return NULL; 2505 } 2506 2507 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device 2508 *phys_dev) 2509 { 2510 struct bnx2fc_hba *hba; 2511 2512 /* Called with bnx2fc_dev_lock held */ 2513 list_for_each_entry(hba, &adapter_list, list) { 2514 if (hba->phys_dev == phys_dev) 2515 return hba; 2516 } 2517 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); 2518 return NULL; 2519 } 2520 2521 /** 2522 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources 2523 * 2524 * @dev: cnic device handle 2525 */ 2526 static void bnx2fc_ulp_exit(struct cnic_dev *dev) 2527 { 2528 struct bnx2fc_hba *hba; 2529 struct bnx2fc_interface *interface, *tmp; 2530 2531 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); 2532 2533 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { 2534 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", 2535 dev->netdev->name, dev->flags); 2536 return; 2537 } 2538 2539 mutex_lock(&bnx2fc_dev_lock); 2540 hba = bnx2fc_find_hba_for_cnic(dev); 2541 if (!hba) { 2542 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", 2543 dev); 2544 mutex_unlock(&bnx2fc_dev_lock); 2545 return; 2546 } 2547 2548 list_del_init(&hba->list); 2549 adapter_count--; 2550 2551 list_for_each_entry_safe(interface, tmp, &if_list, list) 2552 /* destroy not called yet, move to quiesced list */ 2553 if (interface->hba == hba) 2554 __bnx2fc_destroy(interface); 2555 mutex_unlock(&bnx2fc_dev_lock); 2556 2557 /* Ensure ALL destroy work has been completed before return */ 2558 flush_workqueue(bnx2fc_wq); 2559 2560 bnx2fc_ulp_stop(hba); 2561 /* unregister cnic device */ 2562 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) 2563 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); 2564 bnx2fc_hba_destroy(hba); 2565 } 2566 2567 static void bnx2fc_rport_terminate_io(struct fc_rport *rport) 2568 { 2569 /* This is a no-op */ 2570 } 2571 2572 /** 2573 * bnx2fc_fcoe_reset - Resets the fcoe 2574 * 2575 * @shost: shost the reset is from 2576 * 2577 * Returns: always 0 2578 */ 2579 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) 2580 { 2581 struct fc_lport *lport = shost_priv(shost); 2582 fc_lport_reset(lport); 2583 return 0; 2584 } 2585 2586 2587 static bool bnx2fc_match(struct net_device *netdev) 2588 { 2589 struct net_device *phys_dev = netdev; 2590 2591 mutex_lock(&bnx2fc_dev_lock); 2592 if (is_vlan_dev(netdev)) 2593 phys_dev = vlan_dev_real_dev(netdev); 2594 2595 if (bnx2fc_hba_lookup(phys_dev)) { 2596 mutex_unlock(&bnx2fc_dev_lock); 2597 return true; 2598 } 2599 2600 mutex_unlock(&bnx2fc_dev_lock); 2601 return false; 2602 } 2603 2604 2605 static struct fcoe_transport bnx2fc_transport = { 2606 .name = {"bnx2fc"}, 2607 .attached = false, 2608 .list = LIST_HEAD_INIT(bnx2fc_transport.list), 2609 .alloc = bnx2fc_ctlr_alloc, 2610 .match = bnx2fc_match, 2611 .create = bnx2fc_create, 2612 .destroy = bnx2fc_destroy, 2613 .enable = bnx2fc_enable, 2614 .disable = bnx2fc_disable, 2615 }; 2616 2617 /** 2618 * bnx2fc_cpu_online - Create a receive thread for an online CPU 2619 * 2620 * @cpu: cpu index for the online cpu 2621 */ 2622 static int bnx2fc_cpu_online(unsigned int cpu) 2623 { 2624 struct bnx2fc_percpu_s *p; 2625 struct task_struct *thread; 2626 2627 p = &per_cpu(bnx2fc_percpu, cpu); 2628 2629 thread = kthread_create_on_node(bnx2fc_percpu_io_thread, 2630 (void *)p, cpu_to_node(cpu), 2631 "bnx2fc_thread/%d", cpu); 2632 if (IS_ERR(thread)) 2633 return PTR_ERR(thread); 2634 2635 /* bind thread to the cpu */ 2636 kthread_bind(thread, cpu); 2637 p->iothread = thread; 2638 wake_up_process(thread); 2639 return 0; 2640 } 2641 2642 static int bnx2fc_cpu_offline(unsigned int cpu) 2643 { 2644 struct bnx2fc_percpu_s *p; 2645 struct task_struct *thread; 2646 struct bnx2fc_work *work, *tmp; 2647 2648 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); 2649 2650 /* Prevent any new work from being queued for this CPU */ 2651 p = &per_cpu(bnx2fc_percpu, cpu); 2652 spin_lock_bh(&p->fp_work_lock); 2653 thread = p->iothread; 2654 p->iothread = NULL; 2655 2656 /* Free all work in the list */ 2657 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 2658 list_del_init(&work->list); 2659 bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data, 2660 work->num_rq, work->task); 2661 kfree(work); 2662 } 2663 2664 spin_unlock_bh(&p->fp_work_lock); 2665 2666 if (thread) 2667 kthread_stop(thread); 2668 return 0; 2669 } 2670 2671 static int bnx2fc_slave_configure(struct scsi_device *sdev) 2672 { 2673 if (!bnx2fc_queue_depth) 2674 return 0; 2675 2676 scsi_change_queue_depth(sdev, bnx2fc_queue_depth); 2677 return 0; 2678 } 2679 2680 static enum cpuhp_state bnx2fc_online_state; 2681 2682 /** 2683 * bnx2fc_mod_init - module init entry point 2684 * 2685 * Initialize driver wide global data structures, and register 2686 * with cnic module 2687 **/ 2688 static int __init bnx2fc_mod_init(void) 2689 { 2690 struct fcoe_percpu_s *bg; 2691 struct task_struct *l2_thread; 2692 int rc = 0; 2693 unsigned int cpu = 0; 2694 struct bnx2fc_percpu_s *p; 2695 2696 printk(KERN_INFO PFX "%s", version); 2697 2698 /* register as a fcoe transport */ 2699 rc = fcoe_transport_attach(&bnx2fc_transport); 2700 if (rc) { 2701 printk(KERN_ERR "failed to register an fcoe transport, check " 2702 "if libfcoe is loaded\n"); 2703 goto out; 2704 } 2705 2706 INIT_LIST_HEAD(&adapter_list); 2707 INIT_LIST_HEAD(&if_list); 2708 mutex_init(&bnx2fc_dev_lock); 2709 adapter_count = 0; 2710 2711 /* Attach FC transport template */ 2712 rc = bnx2fc_attach_transport(); 2713 if (rc) 2714 goto detach_ft; 2715 2716 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); 2717 if (!bnx2fc_wq) { 2718 rc = -ENOMEM; 2719 goto release_bt; 2720 } 2721 2722 bg = &bnx2fc_global; 2723 skb_queue_head_init(&bg->fcoe_rx_list); 2724 l2_thread = kthread_create(bnx2fc_l2_rcv_thread, 2725 (void *)bg, 2726 "bnx2fc_l2_thread"); 2727 if (IS_ERR(l2_thread)) { 2728 rc = PTR_ERR(l2_thread); 2729 goto free_wq; 2730 } 2731 wake_up_process(l2_thread); 2732 spin_lock_bh(&bg->fcoe_rx_list.lock); 2733 bg->kthread = l2_thread; 2734 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2735 2736 for_each_possible_cpu(cpu) { 2737 p = &per_cpu(bnx2fc_percpu, cpu); 2738 INIT_LIST_HEAD(&p->work_list); 2739 spin_lock_init(&p->fp_work_lock); 2740 } 2741 2742 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online", 2743 bnx2fc_cpu_online, bnx2fc_cpu_offline); 2744 if (rc < 0) 2745 goto stop_thread; 2746 bnx2fc_online_state = rc; 2747 2748 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); 2749 return 0; 2750 2751 stop_thread: 2752 kthread_stop(l2_thread); 2753 free_wq: 2754 destroy_workqueue(bnx2fc_wq); 2755 release_bt: 2756 bnx2fc_release_transport(); 2757 detach_ft: 2758 fcoe_transport_detach(&bnx2fc_transport); 2759 out: 2760 return rc; 2761 } 2762 2763 static void __exit bnx2fc_mod_exit(void) 2764 { 2765 LIST_HEAD(to_be_deleted); 2766 struct bnx2fc_hba *hba, *next; 2767 struct fcoe_percpu_s *bg; 2768 struct task_struct *l2_thread; 2769 struct sk_buff *skb; 2770 2771 /* 2772 * NOTE: Since cnic calls register_driver routine rtnl_lock, 2773 * it will have higher precedence than bnx2fc_dev_lock. 2774 * unregister_device() cannot be called with bnx2fc_dev_lock 2775 * held. 2776 */ 2777 mutex_lock(&bnx2fc_dev_lock); 2778 list_splice_init(&adapter_list, &to_be_deleted); 2779 adapter_count = 0; 2780 mutex_unlock(&bnx2fc_dev_lock); 2781 2782 /* Unregister with cnic */ 2783 list_for_each_entry_safe(hba, next, &to_be_deleted, list) { 2784 list_del_init(&hba->list); 2785 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", 2786 hba); 2787 bnx2fc_ulp_stop(hba); 2788 /* unregister cnic device */ 2789 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, 2790 &hba->reg_with_cnic)) 2791 hba->cnic->unregister_device(hba->cnic, 2792 CNIC_ULP_FCOE); 2793 bnx2fc_hba_destroy(hba); 2794 } 2795 cnic_unregister_driver(CNIC_ULP_FCOE); 2796 2797 /* Destroy global thread */ 2798 bg = &bnx2fc_global; 2799 spin_lock_bh(&bg->fcoe_rx_list.lock); 2800 l2_thread = bg->kthread; 2801 bg->kthread = NULL; 2802 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) 2803 kfree_skb(skb); 2804 2805 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2806 2807 if (l2_thread) 2808 kthread_stop(l2_thread); 2809 2810 cpuhp_remove_state(bnx2fc_online_state); 2811 2812 destroy_workqueue(bnx2fc_wq); 2813 /* 2814 * detach from scsi transport 2815 * must happen after all destroys are done 2816 */ 2817 bnx2fc_release_transport(); 2818 2819 /* detach from fcoe transport */ 2820 fcoe_transport_detach(&bnx2fc_transport); 2821 } 2822 2823 module_init(bnx2fc_mod_init); 2824 module_exit(bnx2fc_mod_exit); 2825 2826 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { 2827 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, 2828 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, 2829 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, 2830 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, 2831 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, 2832 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, 2833 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, 2834 2835 .get_fcoe_fcf_selected = fcoe_fcf_get_selected, 2836 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, 2837 }; 2838 2839 static struct fc_function_template bnx2fc_transport_function = { 2840 .show_host_node_name = 1, 2841 .show_host_port_name = 1, 2842 .show_host_supported_classes = 1, 2843 .show_host_supported_fc4s = 1, 2844 .show_host_active_fc4s = 1, 2845 .show_host_maxframe_size = 1, 2846 2847 .show_host_port_id = 1, 2848 .show_host_supported_speeds = 1, 2849 .get_host_speed = fc_get_host_speed, 2850 .show_host_speed = 1, 2851 .show_host_port_type = 1, 2852 .get_host_port_state = fc_get_host_port_state, 2853 .show_host_port_state = 1, 2854 .show_host_symbolic_name = 1, 2855 2856 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2857 sizeof(struct bnx2fc_rport)), 2858 .show_rport_maxframe_size = 1, 2859 .show_rport_supported_classes = 1, 2860 2861 .show_host_fabric_name = 1, 2862 .show_starget_node_name = 1, 2863 .show_starget_port_name = 1, 2864 .show_starget_port_id = 1, 2865 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2866 .show_rport_dev_loss_tmo = 1, 2867 .get_fc_host_stats = bnx2fc_get_host_stats, 2868 2869 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2870 2871 .terminate_rport_io = bnx2fc_rport_terminate_io, 2872 2873 .vport_create = bnx2fc_vport_create, 2874 .vport_delete = bnx2fc_vport_destroy, 2875 .vport_disable = bnx2fc_vport_disable, 2876 .bsg_request = fc_lport_bsg_request, 2877 }; 2878 2879 static struct fc_function_template bnx2fc_vport_xport_function = { 2880 .show_host_node_name = 1, 2881 .show_host_port_name = 1, 2882 .show_host_supported_classes = 1, 2883 .show_host_supported_fc4s = 1, 2884 .show_host_active_fc4s = 1, 2885 .show_host_maxframe_size = 1, 2886 2887 .show_host_port_id = 1, 2888 .show_host_supported_speeds = 1, 2889 .get_host_speed = fc_get_host_speed, 2890 .show_host_speed = 1, 2891 .show_host_port_type = 1, 2892 .get_host_port_state = fc_get_host_port_state, 2893 .show_host_port_state = 1, 2894 .show_host_symbolic_name = 1, 2895 2896 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2897 sizeof(struct bnx2fc_rport)), 2898 .show_rport_maxframe_size = 1, 2899 .show_rport_supported_classes = 1, 2900 2901 .show_host_fabric_name = 1, 2902 .show_starget_node_name = 1, 2903 .show_starget_port_name = 1, 2904 .show_starget_port_id = 1, 2905 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2906 .show_rport_dev_loss_tmo = 1, 2907 .get_fc_host_stats = fc_get_host_stats, 2908 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2909 .terminate_rport_io = fc_rport_terminate_io, 2910 .bsg_request = fc_lport_bsg_request, 2911 }; 2912 2913 /* 2914 * Additional scsi_host attributes. 2915 */ 2916 static ssize_t 2917 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr, 2918 char *buf) 2919 { 2920 struct Scsi_Host *shost = class_to_shost(dev); 2921 struct fc_lport *lport = shost_priv(shost); 2922 struct fcoe_port *port = lport_priv(lport); 2923 struct bnx2fc_interface *interface = port->priv; 2924 2925 sprintf(buf, "%u\n", interface->tm_timeout); 2926 return strlen(buf); 2927 } 2928 2929 static ssize_t 2930 bnx2fc_tm_timeout_store(struct device *dev, 2931 struct device_attribute *attr, const char *buf, size_t count) 2932 { 2933 struct Scsi_Host *shost = class_to_shost(dev); 2934 struct fc_lport *lport = shost_priv(shost); 2935 struct fcoe_port *port = lport_priv(lport); 2936 struct bnx2fc_interface *interface = port->priv; 2937 int rval, val; 2938 2939 rval = kstrtouint(buf, 10, &val); 2940 if (rval) 2941 return rval; 2942 if (val > 255) 2943 return -ERANGE; 2944 2945 interface->tm_timeout = (u8)val; 2946 return strlen(buf); 2947 } 2948 2949 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show, 2950 bnx2fc_tm_timeout_store); 2951 2952 static struct device_attribute *bnx2fc_host_attrs[] = { 2953 &dev_attr_tm_timeout, 2954 NULL, 2955 }; 2956 2957 /* 2958 * scsi_host_template structure used while registering with SCSI-ml 2959 */ 2960 static struct scsi_host_template bnx2fc_shost_template = { 2961 .module = THIS_MODULE, 2962 .name = "QLogic Offload FCoE Initiator", 2963 .queuecommand = bnx2fc_queuecommand, 2964 .eh_timed_out = fc_eh_timed_out, 2965 .eh_abort_handler = bnx2fc_eh_abort, /* abts */ 2966 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ 2967 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ 2968 .eh_host_reset_handler = fc_eh_host_reset, 2969 .slave_alloc = fc_slave_alloc, 2970 .change_queue_depth = scsi_change_queue_depth, 2971 .this_id = -1, 2972 .cmd_per_lun = 3, 2973 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, 2974 .dma_boundary = 0x7fff, 2975 .max_sectors = 0x3fbf, 2976 .track_queue_depth = 1, 2977 .slave_configure = bnx2fc_slave_configure, 2978 .shost_attrs = bnx2fc_host_attrs, 2979 }; 2980 2981 static struct libfc_function_template bnx2fc_libfc_fcn_templ = { 2982 .frame_send = bnx2fc_xmit, 2983 .elsct_send = bnx2fc_elsct_send, 2984 .fcp_abort_io = bnx2fc_abort_io, 2985 .fcp_cleanup = bnx2fc_cleanup, 2986 .get_lesb = fcoe_get_lesb, 2987 .rport_event_callback = bnx2fc_rport_event_handler, 2988 }; 2989 2990 /* 2991 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface 2992 * structure carrying callback function pointers 2993 */ 2994 static struct cnic_ulp_ops bnx2fc_cnic_cb = { 2995 .owner = THIS_MODULE, 2996 .cnic_init = bnx2fc_ulp_init, 2997 .cnic_exit = bnx2fc_ulp_exit, 2998 .cnic_start = bnx2fc_ulp_start, 2999 .cnic_stop = bnx2fc_ulp_stop, 3000 .indicate_kcqes = bnx2fc_indicate_kcqe, 3001 .indicate_netevent = bnx2fc_indicate_netevent, 3002 .cnic_get_stats = bnx2fc_ulp_get_stats, 3003 }; 3004