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 #include <linux/ethtool.h> 20 21 static struct list_head adapter_list; 22 static struct list_head if_list; 23 static u32 adapter_count; 24 static DEFINE_MUTEX(bnx2fc_dev_lock); 25 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu); 26 27 #define DRV_MODULE_NAME "bnx2fc" 28 #define DRV_MODULE_VERSION BNX2FC_VERSION 29 #define DRV_MODULE_RELDATE "October 15, 2015" 30 31 32 static char version[] = 33 "QLogic FCoE Driver " DRV_MODULE_NAME \ 34 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; 35 36 37 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>"); 38 MODULE_DESCRIPTION("QLogic FCoE Driver"); 39 MODULE_LICENSE("GPL"); 40 MODULE_VERSION(DRV_MODULE_VERSION); 41 42 #define BNX2FC_MAX_QUEUE_DEPTH 256 43 #define BNX2FC_MIN_QUEUE_DEPTH 32 44 #define FCOE_WORD_TO_BYTE 4 45 46 static struct scsi_transport_template *bnx2fc_transport_template; 47 static struct scsi_transport_template *bnx2fc_vport_xport_template; 48 49 struct workqueue_struct *bnx2fc_wq; 50 51 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure. 52 * Here the io threads are per cpu but the l2 thread is just one 53 */ 54 struct fcoe_percpu_s bnx2fc_global; 55 static DEFINE_SPINLOCK(bnx2fc_global_lock); 56 57 static struct cnic_ulp_ops bnx2fc_cnic_cb; 58 static struct libfc_function_template bnx2fc_libfc_fcn_templ; 59 static struct scsi_host_template bnx2fc_shost_template; 60 static struct fc_function_template bnx2fc_transport_function; 61 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ; 62 static struct fc_function_template bnx2fc_vport_xport_function; 63 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode); 64 static void __bnx2fc_destroy(struct bnx2fc_interface *interface); 65 static int bnx2fc_destroy(struct net_device *net_device); 66 static int bnx2fc_enable(struct net_device *netdev); 67 static int bnx2fc_disable(struct net_device *netdev); 68 69 /* fcoe_syfs control interface handlers */ 70 static int bnx2fc_ctlr_alloc(struct net_device *netdev); 71 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev); 72 73 static void bnx2fc_recv_frame(struct sk_buff *skb); 74 75 static void bnx2fc_start_disc(struct bnx2fc_interface *interface); 76 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev); 77 static int bnx2fc_lport_config(struct fc_lport *lport); 78 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba); 79 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba); 80 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba); 81 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba); 82 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba); 83 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 84 struct device *parent, int npiv); 85 static void bnx2fc_destroy_work(struct work_struct *work); 86 87 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev); 88 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 89 *phys_dev); 90 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface); 91 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic); 92 93 static int bnx2fc_fw_init(struct bnx2fc_hba *hba); 94 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba); 95 96 static void bnx2fc_port_shutdown(struct fc_lport *lport); 97 static void bnx2fc_stop(struct bnx2fc_interface *interface); 98 static int __init bnx2fc_mod_init(void); 99 static void __exit bnx2fc_mod_exit(void); 100 101 unsigned int bnx2fc_debug_level; 102 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR); 103 MODULE_PARM_DESC(debug_logging, 104 "Option to enable extended logging,\n" 105 "\t\tDefault is 0 - no logging.\n" 106 "\t\t0x01 - SCSI cmd error, cleanup.\n" 107 "\t\t0x02 - Session setup, cleanup, etc.\n" 108 "\t\t0x04 - lport events, link, mtu, etc.\n" 109 "\t\t0x08 - ELS logs.\n" 110 "\t\t0x10 - fcoe L2 fame related logs.\n" 111 "\t\t0xff - LOG all messages."); 112 113 static uint bnx2fc_devloss_tmo; 114 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO); 115 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports " 116 "attached via bnx2fc."); 117 118 static uint bnx2fc_max_luns = BNX2FC_MAX_LUN; 119 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO); 120 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default " 121 "0xffff."); 122 123 static uint bnx2fc_queue_depth; 124 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO); 125 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices " 126 "attached via bnx2fc."); 127 128 static uint bnx2fc_log_fka; 129 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR); 130 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is " 131 "initiating a FIP keep alive when debug logging is enabled."); 132 133 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport) 134 { 135 return ((struct bnx2fc_interface *) 136 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev; 137 } 138 139 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev) 140 { 141 struct fcoe_ctlr_device *ctlr_dev = 142 fcoe_fcf_dev_to_ctlr_dev(fcf_dev); 143 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); 144 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr); 145 146 fcf_dev->vlan_id = fcoe->vlan_id; 147 } 148 149 static void bnx2fc_clean_rx_queue(struct fc_lport *lp) 150 { 151 struct fcoe_percpu_s *bg; 152 struct fcoe_rcv_info *fr; 153 struct sk_buff_head *list; 154 struct sk_buff *skb, *next; 155 156 bg = &bnx2fc_global; 157 spin_lock_bh(&bg->fcoe_rx_list.lock); 158 list = &bg->fcoe_rx_list; 159 skb_queue_walk_safe(list, skb, next) { 160 fr = fcoe_dev_from_skb(skb); 161 if (fr->fr_dev == lp) { 162 __skb_unlink(skb, list); 163 kfree_skb(skb); 164 } 165 } 166 spin_unlock_bh(&bg->fcoe_rx_list.lock); 167 } 168 169 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen) 170 { 171 int rc; 172 spin_lock(&bnx2fc_global_lock); 173 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global); 174 spin_unlock(&bnx2fc_global_lock); 175 176 return rc; 177 } 178 179 static void bnx2fc_abort_io(struct fc_lport *lport) 180 { 181 /* 182 * This function is no-op for bnx2fc, but we do 183 * not want to leave it as NULL either, as libfc 184 * can call the default function which is 185 * fc_fcp_abort_io. 186 */ 187 } 188 189 static void bnx2fc_cleanup(struct fc_lport *lport) 190 { 191 struct fcoe_port *port = lport_priv(lport); 192 struct bnx2fc_interface *interface = port->priv; 193 struct bnx2fc_hba *hba = interface->hba; 194 struct bnx2fc_rport *tgt; 195 int i; 196 197 BNX2FC_MISC_DBG("Entered %s\n", __func__); 198 mutex_lock(&hba->hba_mutex); 199 spin_lock_bh(&hba->hba_lock); 200 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) { 201 tgt = hba->tgt_ofld_list[i]; 202 if (tgt) { 203 /* Cleanup IOs belonging to requested vport */ 204 if (tgt->port == port) { 205 spin_unlock_bh(&hba->hba_lock); 206 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n"); 207 bnx2fc_flush_active_ios(tgt); 208 spin_lock_bh(&hba->hba_lock); 209 } 210 } 211 } 212 spin_unlock_bh(&hba->hba_lock); 213 mutex_unlock(&hba->hba_mutex); 214 } 215 216 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt, 217 struct fc_frame *fp) 218 { 219 struct fc_rport_priv *rdata = tgt->rdata; 220 struct fc_frame_header *fh; 221 int rc = 0; 222 223 fh = fc_frame_header_get(fp); 224 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, " 225 "r_ctl = 0x%x\n", rdata->ids.port_id, 226 ntohs(fh->fh_ox_id), fh->fh_r_ctl); 227 if ((fh->fh_type == FC_TYPE_ELS) && 228 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 229 230 switch (fc_frame_payload_op(fp)) { 231 case ELS_ADISC: 232 rc = bnx2fc_send_adisc(tgt, fp); 233 break; 234 case ELS_LOGO: 235 rc = bnx2fc_send_logo(tgt, fp); 236 break; 237 case ELS_RLS: 238 rc = bnx2fc_send_rls(tgt, fp); 239 break; 240 default: 241 break; 242 } 243 } else if ((fh->fh_type == FC_TYPE_BLS) && 244 (fh->fh_r_ctl == FC_RCTL_BA_ABTS)) 245 BNX2FC_TGT_DBG(tgt, "ABTS frame\n"); 246 else { 247 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x " 248 "rctl 0x%x thru non-offload path\n", 249 fh->fh_type, fh->fh_r_ctl); 250 return -ENODEV; 251 } 252 if (rc) 253 return -ENOMEM; 254 else 255 return 0; 256 } 257 258 /** 259 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function 260 * 261 * @lport: the associated local port 262 * @fp: the fc_frame to be transmitted 263 */ 264 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp) 265 { 266 struct ethhdr *eh; 267 struct fcoe_crc_eof *cp; 268 struct sk_buff *skb; 269 struct fc_frame_header *fh; 270 struct bnx2fc_interface *interface; 271 struct fcoe_ctlr *ctlr; 272 struct bnx2fc_hba *hba; 273 struct fcoe_port *port; 274 struct fcoe_hdr *hp; 275 struct bnx2fc_rport *tgt; 276 struct fc_stats *stats; 277 u8 sof, eof; 278 u32 crc; 279 unsigned int hlen, tlen, elen; 280 int wlen, rc = 0; 281 282 port = (struct fcoe_port *)lport_priv(lport); 283 interface = port->priv; 284 ctlr = bnx2fc_to_ctlr(interface); 285 hba = interface->hba; 286 287 fh = fc_frame_header_get(fp); 288 289 skb = fp_skb(fp); 290 if (!lport->link_up) { 291 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n"); 292 kfree_skb(skb); 293 return 0; 294 } 295 296 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 297 if (!ctlr->sel_fcf) { 298 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n"); 299 kfree_skb(skb); 300 return -EINVAL; 301 } 302 if (fcoe_ctlr_els_send(ctlr, lport, skb)) 303 return 0; 304 } 305 306 sof = fr_sof(fp); 307 eof = fr_eof(fp); 308 309 /* 310 * Snoop the frame header to check if the frame is for 311 * an offloaded session 312 */ 313 /* 314 * tgt_ofld_list access is synchronized using 315 * both hba mutex and hba lock. Atleast hba mutex or 316 * hba lock needs to be held for read access. 317 */ 318 319 spin_lock_bh(&hba->hba_lock); 320 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id)); 321 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) { 322 /* This frame is for offloaded session */ 323 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session " 324 "port_id = 0x%x\n", ntoh24(fh->fh_d_id)); 325 spin_unlock_bh(&hba->hba_lock); 326 rc = bnx2fc_xmit_l2_frame(tgt, fp); 327 if (rc != -ENODEV) { 328 kfree_skb(skb); 329 return rc; 330 } 331 } else { 332 spin_unlock_bh(&hba->hba_lock); 333 } 334 335 elen = sizeof(struct ethhdr); 336 hlen = sizeof(struct fcoe_hdr); 337 tlen = sizeof(struct fcoe_crc_eof); 338 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 339 340 skb->ip_summed = CHECKSUM_NONE; 341 crc = fcoe_fc_crc(fp); 342 343 /* copy port crc and eof to the skb buff */ 344 if (skb_is_nonlinear(skb)) { 345 skb_frag_t *frag; 346 if (bnx2fc_get_paged_crc_eof(skb, tlen)) { 347 kfree_skb(skb); 348 return -ENOMEM; 349 } 350 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 351 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag); 352 } else { 353 cp = skb_put(skb, tlen); 354 } 355 356 memset(cp, 0, sizeof(*cp)); 357 cp->fcoe_eof = eof; 358 cp->fcoe_crc32 = cpu_to_le32(~crc); 359 if (skb_is_nonlinear(skb)) { 360 kunmap_atomic(cp); 361 cp = NULL; 362 } 363 364 /* adjust skb network/transport offsets to match mac/fcoe/port */ 365 skb_push(skb, elen + hlen); 366 skb_reset_mac_header(skb); 367 skb_reset_network_header(skb); 368 skb->mac_len = elen; 369 skb->protocol = htons(ETH_P_FCOE); 370 skb->dev = interface->netdev; 371 372 /* fill up mac and fcoe headers */ 373 eh = eth_hdr(skb); 374 eh->h_proto = htons(ETH_P_FCOE); 375 if (ctlr->map_dest) 376 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 377 else 378 /* insert GW address */ 379 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); 380 381 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) 382 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); 383 else 384 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); 385 386 hp = (struct fcoe_hdr *)(eh + 1); 387 memset(hp, 0, sizeof(*hp)); 388 if (FC_FCOE_VER) 389 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 390 hp->fcoe_sof = sof; 391 392 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ 393 if (lport->seq_offload && fr_max_payload(fp)) { 394 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; 395 skb_shinfo(skb)->gso_size = fr_max_payload(fp); 396 } else { 397 skb_shinfo(skb)->gso_type = 0; 398 skb_shinfo(skb)->gso_size = 0; 399 } 400 401 /*update tx stats */ 402 stats = per_cpu_ptr(lport->stats, get_cpu()); 403 stats->TxFrames++; 404 stats->TxWords += wlen; 405 put_cpu(); 406 407 /* send down to lld */ 408 fr_dev(fp) = lport; 409 if (port->fcoe_pending_queue.qlen) 410 fcoe_check_wait_queue(lport, skb); 411 else if (fcoe_start_io(skb)) 412 fcoe_check_wait_queue(lport, skb); 413 414 return 0; 415 } 416 417 /** 418 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ 419 * 420 * @skb: the receive socket buffer 421 * @dev: associated net device 422 * @ptype: context 423 * @olddev: last device 424 * 425 * This function receives the packet and builds FC frame and passes it up 426 */ 427 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev, 428 struct packet_type *ptype, struct net_device *olddev) 429 { 430 struct fc_lport *lport; 431 struct bnx2fc_interface *interface; 432 struct fcoe_ctlr *ctlr; 433 struct fcoe_rcv_info *fr; 434 struct fcoe_percpu_s *bg; 435 struct sk_buff *tmp_skb; 436 437 interface = container_of(ptype, struct bnx2fc_interface, 438 fcoe_packet_type); 439 ctlr = bnx2fc_to_ctlr(interface); 440 lport = ctlr->lp; 441 442 if (unlikely(lport == NULL)) { 443 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n"); 444 goto err; 445 } 446 447 tmp_skb = skb_share_check(skb, GFP_ATOMIC); 448 if (!tmp_skb) 449 goto err; 450 451 skb = tmp_skb; 452 453 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { 454 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n"); 455 goto err; 456 } 457 458 /* 459 * Check for minimum frame length, and make sure required FCoE 460 * and FC headers are pulled into the linear data area. 461 */ 462 if (unlikely((skb->len < FCOE_MIN_FRAME) || 463 !pskb_may_pull(skb, FCOE_HEADER_LEN))) 464 goto err; 465 466 skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); 467 468 fr = fcoe_dev_from_skb(skb); 469 fr->fr_dev = lport; 470 471 bg = &bnx2fc_global; 472 spin_lock(&bg->fcoe_rx_list.lock); 473 474 __skb_queue_tail(&bg->fcoe_rx_list, skb); 475 if (bg->fcoe_rx_list.qlen == 1) 476 wake_up_process(bg->kthread); 477 478 spin_unlock(&bg->fcoe_rx_list.lock); 479 480 return 0; 481 err: 482 kfree_skb(skb); 483 return -1; 484 } 485 486 static int bnx2fc_l2_rcv_thread(void *arg) 487 { 488 struct fcoe_percpu_s *bg = arg; 489 struct sk_buff *skb; 490 491 set_user_nice(current, MIN_NICE); 492 set_current_state(TASK_INTERRUPTIBLE); 493 while (!kthread_should_stop()) { 494 schedule(); 495 spin_lock_bh(&bg->fcoe_rx_list.lock); 496 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { 497 spin_unlock_bh(&bg->fcoe_rx_list.lock); 498 bnx2fc_recv_frame(skb); 499 spin_lock_bh(&bg->fcoe_rx_list.lock); 500 } 501 __set_current_state(TASK_INTERRUPTIBLE); 502 spin_unlock_bh(&bg->fcoe_rx_list.lock); 503 } 504 __set_current_state(TASK_RUNNING); 505 return 0; 506 } 507 508 509 static void bnx2fc_recv_frame(struct sk_buff *skb) 510 { 511 u32 fr_len; 512 struct fc_lport *lport; 513 struct fcoe_rcv_info *fr; 514 struct fc_stats *stats; 515 struct fc_frame_header *fh; 516 struct fcoe_crc_eof crc_eof; 517 struct fc_frame *fp; 518 struct fc_lport *vn_port; 519 struct fcoe_port *port, *phys_port; 520 u8 *mac = NULL; 521 u8 *dest_mac = NULL; 522 struct fcoe_hdr *hp; 523 struct bnx2fc_interface *interface; 524 struct fcoe_ctlr *ctlr; 525 526 fr = fcoe_dev_from_skb(skb); 527 lport = fr->fr_dev; 528 if (unlikely(lport == NULL)) { 529 printk(KERN_ERR PFX "Invalid lport struct\n"); 530 kfree_skb(skb); 531 return; 532 } 533 534 if (skb_is_nonlinear(skb)) 535 skb_linearize(skb); 536 mac = eth_hdr(skb)->h_source; 537 dest_mac = eth_hdr(skb)->h_dest; 538 539 /* Pull the header */ 540 hp = (struct fcoe_hdr *) skb_network_header(skb); 541 fh = (struct fc_frame_header *) skb_transport_header(skb); 542 skb_pull(skb, sizeof(struct fcoe_hdr)); 543 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 544 545 fp = (struct fc_frame *)skb; 546 fc_frame_init(fp); 547 fr_dev(fp) = lport; 548 fr_sof(fp) = hp->fcoe_sof; 549 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 550 kfree_skb(skb); 551 return; 552 } 553 fr_eof(fp) = crc_eof.fcoe_eof; 554 fr_crc(fp) = crc_eof.fcoe_crc32; 555 if (pskb_trim(skb, fr_len)) { 556 kfree_skb(skb); 557 return; 558 } 559 560 phys_port = lport_priv(lport); 561 interface = phys_port->priv; 562 ctlr = bnx2fc_to_ctlr(interface); 563 564 fh = fc_frame_header_get(fp); 565 566 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 567 BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n", 568 dest_mac); 569 kfree_skb(skb); 570 return; 571 } 572 573 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 574 if (vn_port) { 575 port = lport_priv(vn_port); 576 if (!ether_addr_equal(port->data_src_addr, dest_mac)) { 577 BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); 578 kfree_skb(skb); 579 return; 580 } 581 } 582 if (ctlr->state) { 583 if (!ether_addr_equal(mac, ctlr->dest_addr)) { 584 BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n", 585 mac, ctlr->dest_addr); 586 kfree_skb(skb); 587 return; 588 } 589 } 590 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 591 fh->fh_type == FC_TYPE_FCP) { 592 /* Drop FCP data. We dont this in L2 path */ 593 kfree_skb(skb); 594 return; 595 } 596 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 597 fh->fh_type == FC_TYPE_ELS) { 598 switch (fc_frame_payload_op(fp)) { 599 case ELS_LOGO: 600 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 601 /* drop non-FIP LOGO */ 602 kfree_skb(skb); 603 return; 604 } 605 break; 606 } 607 } 608 609 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 610 /* Drop incoming ABTS */ 611 kfree_skb(skb); 612 return; 613 } 614 615 /* 616 * If the destination ID from the frame header does not match what we 617 * have on record for lport and the search for a NPIV port came up 618 * empty then this is not addressed to our port so simply drop it. 619 */ 620 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 621 BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", 622 lport->port_id, ntoh24(fh->fh_d_id)); 623 kfree_skb(skb); 624 return; 625 } 626 627 stats = per_cpu_ptr(lport->stats, smp_processor_id()); 628 stats->RxFrames++; 629 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; 630 631 if (le32_to_cpu(fr_crc(fp)) != 632 ~crc32(~0, skb->data, fr_len)) { 633 if (stats->InvalidCRCCount < 5) 634 printk(KERN_WARNING PFX "dropping frame with " 635 "CRC error\n"); 636 stats->InvalidCRCCount++; 637 kfree_skb(skb); 638 return; 639 } 640 fc_exch_recv(lport, fp); 641 } 642 643 /** 644 * bnx2fc_percpu_io_thread - thread per cpu for ios 645 * 646 * @arg: ptr to bnx2fc_percpu_info structure 647 */ 648 static int bnx2fc_percpu_io_thread(void *arg) 649 { 650 struct bnx2fc_percpu_s *p = arg; 651 struct bnx2fc_work *work, *tmp; 652 LIST_HEAD(work_list); 653 654 set_user_nice(current, MIN_NICE); 655 set_current_state(TASK_INTERRUPTIBLE); 656 while (!kthread_should_stop()) { 657 schedule(); 658 spin_lock_bh(&p->fp_work_lock); 659 while (!list_empty(&p->work_list)) { 660 list_splice_init(&p->work_list, &work_list); 661 spin_unlock_bh(&p->fp_work_lock); 662 663 list_for_each_entry_safe(work, tmp, &work_list, list) { 664 list_del_init(&work->list); 665 bnx2fc_process_cq_compl(work->tgt, work->wqe, 666 work->rq_data, 667 work->num_rq, 668 work->task); 669 kfree(work); 670 } 671 672 spin_lock_bh(&p->fp_work_lock); 673 } 674 __set_current_state(TASK_INTERRUPTIBLE); 675 spin_unlock_bh(&p->fp_work_lock); 676 } 677 __set_current_state(TASK_RUNNING); 678 679 return 0; 680 } 681 682 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) 683 { 684 struct fc_host_statistics *bnx2fc_stats; 685 struct fc_lport *lport = shost_priv(shost); 686 struct fcoe_port *port = lport_priv(lport); 687 struct bnx2fc_interface *interface = port->priv; 688 struct bnx2fc_hba *hba = interface->hba; 689 struct fcoe_statistics_params *fw_stats; 690 int rc = 0; 691 692 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; 693 if (!fw_stats) 694 return NULL; 695 696 mutex_lock(&hba->hba_stats_mutex); 697 698 bnx2fc_stats = fc_get_host_stats(shost); 699 700 init_completion(&hba->stat_req_done); 701 if (bnx2fc_send_stat_req(hba)) 702 goto unlock_stats_mutex; 703 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); 704 if (!rc) { 705 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); 706 goto unlock_stats_mutex; 707 } 708 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); 709 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; 710 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); 711 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; 712 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); 713 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); 714 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); 715 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; 716 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); 717 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); 718 719 bnx2fc_stats->dumped_frames = 0; 720 bnx2fc_stats->lip_count = 0; 721 bnx2fc_stats->nos_count = 0; 722 bnx2fc_stats->loss_of_sync_count = 0; 723 bnx2fc_stats->loss_of_signal_count = 0; 724 bnx2fc_stats->prim_seq_protocol_err_count = 0; 725 726 memcpy(&hba->prev_stats, hba->stats_buffer, 727 sizeof(struct fcoe_statistics_params)); 728 729 unlock_stats_mutex: 730 mutex_unlock(&hba->hba_stats_mutex); 731 return bnx2fc_stats; 732 } 733 734 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) 735 { 736 struct fcoe_port *port = lport_priv(lport); 737 struct bnx2fc_interface *interface = port->priv; 738 struct bnx2fc_hba *hba = interface->hba; 739 struct Scsi_Host *shost = lport->host; 740 int rc = 0; 741 742 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; 743 shost->max_lun = bnx2fc_max_luns; 744 shost->max_id = BNX2FC_MAX_FCP_TGT; 745 shost->max_channel = 0; 746 if (lport->vport) 747 shost->transportt = bnx2fc_vport_xport_template; 748 else 749 shost->transportt = bnx2fc_transport_template; 750 751 /* Add the new host to SCSI-ml */ 752 rc = scsi_add_host(lport->host, dev); 753 if (rc) { 754 printk(KERN_ERR PFX "Error on scsi_add_host\n"); 755 return rc; 756 } 757 if (!lport->vport) 758 fc_host_max_npiv_vports(lport->host) = USHRT_MAX; 759 snprintf(fc_host_symbolic_name(lport->host), 256, 760 "%s (QLogic %s) v%s over %s", 761 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION, 762 interface->netdev->name); 763 764 return 0; 765 } 766 767 static int bnx2fc_link_ok(struct fc_lport *lport) 768 { 769 struct fcoe_port *port = lport_priv(lport); 770 struct bnx2fc_interface *interface = port->priv; 771 struct bnx2fc_hba *hba = interface->hba; 772 struct net_device *dev = hba->phys_dev; 773 int rc = 0; 774 775 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) 776 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 777 else { 778 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 779 rc = -1; 780 } 781 return rc; 782 } 783 784 /** 785 * bnx2fc_get_link_state - get network link state 786 * 787 * @hba: adapter instance pointer 788 * 789 * updates adapter structure flag based on netdev state 790 */ 791 void bnx2fc_get_link_state(struct bnx2fc_hba *hba) 792 { 793 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) 794 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 795 else 796 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 797 } 798 799 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) 800 { 801 struct bnx2fc_hba *hba; 802 struct bnx2fc_interface *interface; 803 struct fcoe_ctlr *ctlr; 804 struct fcoe_port *port; 805 u64 wwnn, wwpn; 806 807 port = lport_priv(lport); 808 interface = port->priv; 809 ctlr = bnx2fc_to_ctlr(interface); 810 hba = interface->hba; 811 812 /* require support for get_pauseparam ethtool op. */ 813 if (!hba->phys_dev->ethtool_ops || 814 !hba->phys_dev->ethtool_ops->get_pauseparam) 815 return -EOPNOTSUPP; 816 817 if (fc_set_mfs(lport, BNX2FC_MFS)) 818 return -EINVAL; 819 820 skb_queue_head_init(&port->fcoe_pending_queue); 821 port->fcoe_pending_queue_active = 0; 822 timer_setup(&port->timer, fcoe_queue_timer, 0); 823 824 fcoe_link_speed_update(lport); 825 826 if (!lport->vport) { 827 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) 828 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 829 1, 0); 830 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); 831 fc_set_wwnn(lport, wwnn); 832 833 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) 834 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 835 2, 0); 836 837 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); 838 fc_set_wwpn(lport, wwpn); 839 } 840 841 return 0; 842 } 843 844 static void bnx2fc_destroy_timer(struct timer_list *t) 845 { 846 struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer); 847 848 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " 849 "Destroy compl not received!!\n"); 850 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 851 wake_up_interruptible(&hba->destroy_wait); 852 } 853 854 /** 855 * bnx2fc_indicate_netevent - Generic netdev event handler 856 * 857 * @context: adapter structure pointer 858 * @event: event type 859 * @vlan_id: vlan id - associated vlan id with this event 860 * 861 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and 862 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. 863 */ 864 static void bnx2fc_indicate_netevent(void *context, unsigned long event, 865 u16 vlan_id) 866 { 867 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; 868 struct fcoe_ctlr_device *cdev; 869 struct fc_lport *lport; 870 struct fc_lport *vport; 871 struct bnx2fc_interface *interface, *tmp; 872 struct fcoe_ctlr *ctlr; 873 int wait_for_upload = 0; 874 u32 link_possible = 1; 875 876 if (vlan_id != 0 && event != NETDEV_UNREGISTER) 877 return; 878 879 switch (event) { 880 case NETDEV_UP: 881 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 882 printk(KERN_ERR "indicate_netevent: "\ 883 "hba is not UP!!\n"); 884 break; 885 886 case NETDEV_DOWN: 887 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 888 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 889 link_possible = 0; 890 break; 891 892 case NETDEV_GOING_DOWN: 893 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 894 link_possible = 0; 895 break; 896 897 case NETDEV_CHANGE: 898 break; 899 900 case NETDEV_UNREGISTER: 901 if (!vlan_id) 902 return; 903 mutex_lock(&bnx2fc_dev_lock); 904 list_for_each_entry_safe(interface, tmp, &if_list, list) { 905 if (interface->hba == hba && 906 interface->vlan_id == (vlan_id & VLAN_VID_MASK)) 907 __bnx2fc_destroy(interface); 908 } 909 mutex_unlock(&bnx2fc_dev_lock); 910 911 /* Ensure ALL destroy work has been completed before return */ 912 flush_workqueue(bnx2fc_wq); 913 return; 914 915 default: 916 return; 917 } 918 919 mutex_lock(&bnx2fc_dev_lock); 920 list_for_each_entry(interface, &if_list, list) { 921 922 if (interface->hba != hba) 923 continue; 924 925 ctlr = bnx2fc_to_ctlr(interface); 926 lport = ctlr->lp; 927 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", 928 interface->netdev->name, event); 929 930 fcoe_link_speed_update(lport); 931 932 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 933 934 if (link_possible && !bnx2fc_link_ok(lport)) { 935 switch (cdev->enabled) { 936 case FCOE_CTLR_DISABLED: 937 pr_info("Link up while interface is disabled.\n"); 938 break; 939 case FCOE_CTLR_ENABLED: 940 case FCOE_CTLR_UNUSED: 941 /* Reset max recv frame size to default */ 942 fc_set_mfs(lport, BNX2FC_MFS); 943 /* 944 * ctlr link up will only be handled during 945 * enable to avoid sending discovery 946 * solicitation on a stale vlan 947 */ 948 if (interface->enabled) 949 fcoe_ctlr_link_up(ctlr); 950 } 951 } else if (fcoe_ctlr_link_down(ctlr)) { 952 switch (cdev->enabled) { 953 case FCOE_CTLR_DISABLED: 954 pr_info("Link down while interface is disabled.\n"); 955 break; 956 case FCOE_CTLR_ENABLED: 957 case FCOE_CTLR_UNUSED: 958 mutex_lock(&lport->lp_mutex); 959 list_for_each_entry(vport, &lport->vports, list) 960 fc_host_port_type(vport->host) = 961 FC_PORTTYPE_UNKNOWN; 962 mutex_unlock(&lport->lp_mutex); 963 fc_host_port_type(lport->host) = 964 FC_PORTTYPE_UNKNOWN; 965 per_cpu_ptr(lport->stats, 966 get_cpu())->LinkFailureCount++; 967 put_cpu(); 968 fcoe_clean_pending_queue(lport); 969 wait_for_upload = 1; 970 } 971 } 972 } 973 mutex_unlock(&bnx2fc_dev_lock); 974 975 if (wait_for_upload) { 976 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 977 init_waitqueue_head(&hba->shutdown_wait); 978 BNX2FC_MISC_DBG("indicate_netevent " 979 "num_ofld_sess = %d\n", 980 hba->num_ofld_sess); 981 hba->wait_for_link_down = 1; 982 wait_event_interruptible(hba->shutdown_wait, 983 (hba->num_ofld_sess == 0)); 984 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", 985 hba->num_ofld_sess); 986 hba->wait_for_link_down = 0; 987 988 if (signal_pending(current)) 989 flush_signals(current); 990 } 991 } 992 993 static int bnx2fc_libfc_config(struct fc_lport *lport) 994 { 995 996 /* Set the function pointers set by bnx2fc driver */ 997 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, 998 sizeof(struct libfc_function_template)); 999 fc_elsct_init(lport); 1000 fc_exch_init(lport); 1001 fc_disc_init(lport); 1002 fc_disc_config(lport, lport); 1003 return 0; 1004 } 1005 1006 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba) 1007 { 1008 int fcoe_min_xid, fcoe_max_xid; 1009 1010 fcoe_min_xid = hba->max_xid + 1; 1011 if (nr_cpu_ids <= 2) 1012 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET; 1013 else 1014 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET; 1015 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid, 1016 fcoe_max_xid, NULL)) { 1017 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); 1018 return -ENOMEM; 1019 } 1020 1021 return 0; 1022 } 1023 1024 static int bnx2fc_lport_config(struct fc_lport *lport) 1025 { 1026 lport->link_up = 0; 1027 lport->qfull = 0; 1028 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; 1029 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; 1030 lport->e_d_tov = 2 * 1000; 1031 lport->r_a_tov = 10 * 1000; 1032 1033 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1034 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1035 lport->does_npiv = 1; 1036 1037 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); 1038 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; 1039 1040 /* alloc stats structure */ 1041 if (fc_lport_init_stats(lport)) 1042 return -ENOMEM; 1043 1044 /* Finish fc_lport configuration */ 1045 fc_lport_config(lport); 1046 1047 return 0; 1048 } 1049 1050 /** 1051 * bnx2fc_fip_recv - handle a received FIP frame. 1052 * 1053 * @skb: the received skb 1054 * @dev: associated &net_device 1055 * @ptype: the &packet_type structure which was used to register this handler. 1056 * @orig_dev: original receive &net_device, in case @ dev is a bond. 1057 * 1058 * Returns: 0 for success 1059 */ 1060 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, 1061 struct packet_type *ptype, 1062 struct net_device *orig_dev) 1063 { 1064 struct bnx2fc_interface *interface; 1065 struct fcoe_ctlr *ctlr; 1066 interface = container_of(ptype, struct bnx2fc_interface, 1067 fip_packet_type); 1068 ctlr = bnx2fc_to_ctlr(interface); 1069 fcoe_ctlr_recv(ctlr, skb); 1070 return 0; 1071 } 1072 1073 /** 1074 * bnx2fc_update_src_mac - Update Ethernet MAC filters. 1075 * 1076 * @lport: The local port 1077 * @addr: Location of data to copy 1078 * 1079 * Remove any previously-set unicast MAC filter. 1080 * Add secondary FCoE MAC address filter for our OUI. 1081 */ 1082 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) 1083 { 1084 struct fcoe_port *port = lport_priv(lport); 1085 1086 memcpy(port->data_src_addr, addr, ETH_ALEN); 1087 } 1088 1089 /** 1090 * bnx2fc_get_src_mac - return the ethernet source address for an lport 1091 * 1092 * @lport: libfc port 1093 */ 1094 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) 1095 { 1096 struct fcoe_port *port; 1097 1098 port = (struct fcoe_port *)lport_priv(lport); 1099 return port->data_src_addr; 1100 } 1101 1102 /** 1103 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. 1104 * 1105 * @fip: FCoE controller. 1106 * @skb: FIP Packet. 1107 */ 1108 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 1109 { 1110 struct fip_header *fiph; 1111 struct ethhdr *eth_hdr; 1112 u16 op; 1113 u8 sub; 1114 1115 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); 1116 eth_hdr = (struct ethhdr *)skb_mac_header(skb); 1117 op = ntohs(fiph->fip_op); 1118 sub = fiph->fip_subcode; 1119 1120 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka) 1121 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n", 1122 eth_hdr->h_source, eth_hdr->h_dest); 1123 1124 skb->dev = bnx2fc_from_ctlr(fip)->netdev; 1125 dev_queue_xmit(skb); 1126 } 1127 1128 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) 1129 { 1130 struct Scsi_Host *shost = vport_to_shost(vport); 1131 struct fc_lport *n_port = shost_priv(shost); 1132 struct fcoe_port *port = lport_priv(n_port); 1133 struct bnx2fc_interface *interface = port->priv; 1134 struct net_device *netdev = interface->netdev; 1135 struct fc_lport *vn_port; 1136 int rc; 1137 char buf[32]; 1138 1139 rc = fcoe_validate_vport_create(vport); 1140 if (rc) { 1141 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1142 printk(KERN_ERR PFX "Failed to create vport, " 1143 "WWPN (0x%s) already exists\n", 1144 buf); 1145 return rc; 1146 } 1147 1148 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1149 printk(KERN_ERR PFX "vn ports cannot be created on" 1150 "this interface\n"); 1151 return -EIO; 1152 } 1153 rtnl_lock(); 1154 mutex_lock(&bnx2fc_dev_lock); 1155 vn_port = bnx2fc_if_create(interface, &vport->dev, 1); 1156 mutex_unlock(&bnx2fc_dev_lock); 1157 rtnl_unlock(); 1158 1159 if (!vn_port) { 1160 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", 1161 netdev->name); 1162 return -EIO; 1163 } 1164 1165 if (bnx2fc_devloss_tmo) 1166 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo; 1167 1168 if (disabled) { 1169 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1170 } else { 1171 vn_port->boot_time = jiffies; 1172 fc_lport_init(vn_port); 1173 fc_fabric_login(vn_port); 1174 fc_vport_setlink(vn_port); 1175 } 1176 return 0; 1177 } 1178 1179 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) 1180 { 1181 struct bnx2fc_lport *blport, *tmp; 1182 1183 spin_lock_bh(&hba->hba_lock); 1184 list_for_each_entry_safe(blport, tmp, &hba->vports, list) { 1185 if (blport->lport == lport) { 1186 list_del(&blport->list); 1187 kfree(blport); 1188 } 1189 } 1190 spin_unlock_bh(&hba->hba_lock); 1191 } 1192 1193 static int bnx2fc_vport_destroy(struct fc_vport *vport) 1194 { 1195 struct Scsi_Host *shost = vport_to_shost(vport); 1196 struct fc_lport *n_port = shost_priv(shost); 1197 struct fc_lport *vn_port = vport->dd_data; 1198 struct fcoe_port *port = lport_priv(vn_port); 1199 struct bnx2fc_interface *interface = port->priv; 1200 struct fc_lport *v_port; 1201 bool found = false; 1202 1203 mutex_lock(&n_port->lp_mutex); 1204 list_for_each_entry(v_port, &n_port->vports, list) 1205 if (v_port->vport == vport) { 1206 found = true; 1207 break; 1208 } 1209 1210 if (!found) { 1211 mutex_unlock(&n_port->lp_mutex); 1212 return -ENOENT; 1213 } 1214 list_del(&vn_port->list); 1215 mutex_unlock(&n_port->lp_mutex); 1216 bnx2fc_free_vport(interface->hba, port->lport); 1217 bnx2fc_port_shutdown(port->lport); 1218 bnx2fc_interface_put(interface); 1219 queue_work(bnx2fc_wq, &port->destroy_work); 1220 return 0; 1221 } 1222 1223 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) 1224 { 1225 struct fc_lport *lport = vport->dd_data; 1226 1227 if (disable) { 1228 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1229 fc_fabric_logoff(lport); 1230 } else { 1231 lport->boot_time = jiffies; 1232 fc_fabric_login(lport); 1233 fc_vport_setlink(lport); 1234 } 1235 return 0; 1236 } 1237 1238 1239 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) 1240 { 1241 struct net_device *netdev = interface->netdev; 1242 struct net_device *physdev = interface->hba->phys_dev; 1243 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1244 struct netdev_hw_addr *ha; 1245 int sel_san_mac = 0; 1246 1247 /* setup Source MAC Address */ 1248 rcu_read_lock(); 1249 for_each_dev_addr(physdev, ha) { 1250 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", 1251 ha->type); 1252 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], 1253 ha->addr[1], ha->addr[2], ha->addr[3], 1254 ha->addr[4], ha->addr[5]); 1255 1256 if ((ha->type == NETDEV_HW_ADDR_T_SAN) && 1257 (is_valid_ether_addr(ha->addr))) { 1258 memcpy(ctlr->ctl_src_addr, ha->addr, 1259 ETH_ALEN); 1260 sel_san_mac = 1; 1261 BNX2FC_MISC_DBG("Found SAN MAC\n"); 1262 } 1263 } 1264 rcu_read_unlock(); 1265 1266 if (!sel_san_mac) 1267 return -ENODEV; 1268 1269 interface->fip_packet_type.func = bnx2fc_fip_recv; 1270 interface->fip_packet_type.type = htons(ETH_P_FIP); 1271 interface->fip_packet_type.dev = netdev; 1272 dev_add_pack(&interface->fip_packet_type); 1273 1274 interface->fcoe_packet_type.func = bnx2fc_rcv; 1275 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); 1276 interface->fcoe_packet_type.dev = netdev; 1277 dev_add_pack(&interface->fcoe_packet_type); 1278 1279 return 0; 1280 } 1281 1282 static int bnx2fc_attach_transport(void) 1283 { 1284 bnx2fc_transport_template = 1285 fc_attach_transport(&bnx2fc_transport_function); 1286 1287 if (bnx2fc_transport_template == NULL) { 1288 printk(KERN_ERR PFX "Failed to attach FC transport\n"); 1289 return -ENODEV; 1290 } 1291 1292 bnx2fc_vport_xport_template = 1293 fc_attach_transport(&bnx2fc_vport_xport_function); 1294 if (bnx2fc_vport_xport_template == NULL) { 1295 printk(KERN_ERR PFX 1296 "Failed to attach FC transport for vport\n"); 1297 fc_release_transport(bnx2fc_transport_template); 1298 bnx2fc_transport_template = NULL; 1299 return -ENODEV; 1300 } 1301 return 0; 1302 } 1303 static void bnx2fc_release_transport(void) 1304 { 1305 fc_release_transport(bnx2fc_transport_template); 1306 fc_release_transport(bnx2fc_vport_xport_template); 1307 bnx2fc_transport_template = NULL; 1308 bnx2fc_vport_xport_template = NULL; 1309 } 1310 1311 static void bnx2fc_interface_release(struct kref *kref) 1312 { 1313 struct fcoe_ctlr_device *ctlr_dev; 1314 struct bnx2fc_interface *interface; 1315 struct fcoe_ctlr *ctlr; 1316 struct net_device *netdev; 1317 1318 interface = container_of(kref, struct bnx2fc_interface, kref); 1319 BNX2FC_MISC_DBG("Interface is being released\n"); 1320 1321 ctlr = bnx2fc_to_ctlr(interface); 1322 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); 1323 netdev = interface->netdev; 1324 1325 /* tear-down FIP controller */ 1326 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) 1327 fcoe_ctlr_destroy(ctlr); 1328 1329 fcoe_ctlr_device_delete(ctlr_dev); 1330 1331 dev_put(netdev); 1332 module_put(THIS_MODULE); 1333 } 1334 1335 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) 1336 { 1337 kref_get(&interface->kref); 1338 } 1339 1340 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) 1341 { 1342 kref_put(&interface->kref, bnx2fc_interface_release); 1343 } 1344 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) 1345 { 1346 /* Free the command manager */ 1347 if (hba->cmd_mgr) { 1348 bnx2fc_cmd_mgr_free(hba->cmd_mgr); 1349 hba->cmd_mgr = NULL; 1350 } 1351 kfree(hba->tgt_ofld_list); 1352 bnx2fc_unbind_pcidev(hba); 1353 kfree(hba); 1354 } 1355 1356 /** 1357 * bnx2fc_hba_create - create a new bnx2fc hba 1358 * 1359 * @cnic: pointer to cnic device 1360 * 1361 * Creates a new FCoE hba on the given device. 1362 * 1363 */ 1364 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) 1365 { 1366 struct bnx2fc_hba *hba; 1367 struct fcoe_capabilities *fcoe_cap; 1368 int rc; 1369 1370 hba = kzalloc(sizeof(*hba), GFP_KERNEL); 1371 if (!hba) { 1372 printk(KERN_ERR PFX "Unable to allocate hba structure\n"); 1373 return NULL; 1374 } 1375 spin_lock_init(&hba->hba_lock); 1376 mutex_init(&hba->hba_mutex); 1377 mutex_init(&hba->hba_stats_mutex); 1378 1379 hba->cnic = cnic; 1380 1381 hba->max_tasks = cnic->max_fcoe_exchanges; 1382 hba->elstm_xids = (hba->max_tasks / 2); 1383 hba->max_outstanding_cmds = hba->elstm_xids; 1384 hba->max_xid = (hba->max_tasks - 1); 1385 1386 rc = bnx2fc_bind_pcidev(hba); 1387 if (rc) { 1388 printk(KERN_ERR PFX "create_adapter: bind error\n"); 1389 goto bind_err; 1390 } 1391 hba->phys_dev = cnic->netdev; 1392 hba->next_conn_id = 0; 1393 1394 hba->tgt_ofld_list = 1395 kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *), 1396 GFP_KERNEL); 1397 if (!hba->tgt_ofld_list) { 1398 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); 1399 goto tgtofld_err; 1400 } 1401 1402 hba->num_ofld_sess = 0; 1403 1404 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba); 1405 if (!hba->cmd_mgr) { 1406 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); 1407 goto cmgr_err; 1408 } 1409 fcoe_cap = &hba->fcoe_cap; 1410 1411 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << 1412 FCOE_IOS_PER_CONNECTION_SHIFT; 1413 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << 1414 FCOE_LOGINS_PER_PORT_SHIFT; 1415 fcoe_cap->capability2 = hba->max_outstanding_cmds << 1416 FCOE_NUMBER_OF_EXCHANGES_SHIFT; 1417 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << 1418 FCOE_NPIV_WWN_PER_PORT_SHIFT; 1419 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << 1420 FCOE_TARGETS_SUPPORTED_SHIFT; 1421 fcoe_cap->capability3 |= hba->max_outstanding_cmds << 1422 FCOE_OUTSTANDING_COMMANDS_SHIFT; 1423 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; 1424 1425 init_waitqueue_head(&hba->shutdown_wait); 1426 init_waitqueue_head(&hba->destroy_wait); 1427 INIT_LIST_HEAD(&hba->vports); 1428 1429 return hba; 1430 1431 cmgr_err: 1432 kfree(hba->tgt_ofld_list); 1433 tgtofld_err: 1434 bnx2fc_unbind_pcidev(hba); 1435 bind_err: 1436 kfree(hba); 1437 return NULL; 1438 } 1439 1440 static struct bnx2fc_interface * 1441 bnx2fc_interface_create(struct bnx2fc_hba *hba, 1442 struct net_device *netdev, 1443 enum fip_mode fip_mode) 1444 { 1445 struct fcoe_ctlr_device *ctlr_dev; 1446 struct bnx2fc_interface *interface; 1447 struct fcoe_ctlr *ctlr; 1448 int size; 1449 int rc = 0; 1450 1451 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); 1452 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, 1453 size); 1454 if (!ctlr_dev) { 1455 printk(KERN_ERR PFX "Unable to allocate interface structure\n"); 1456 return NULL; 1457 } 1458 ctlr = fcoe_ctlr_device_priv(ctlr_dev); 1459 ctlr->cdev = ctlr_dev; 1460 interface = fcoe_ctlr_priv(ctlr); 1461 dev_hold(netdev); 1462 kref_init(&interface->kref); 1463 interface->hba = hba; 1464 interface->netdev = netdev; 1465 1466 /* Initialize FIP */ 1467 fcoe_ctlr_init(ctlr, fip_mode); 1468 ctlr->send = bnx2fc_fip_send; 1469 ctlr->update_mac = bnx2fc_update_src_mac; 1470 ctlr->get_src_addr = bnx2fc_get_src_mac; 1471 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); 1472 1473 rc = bnx2fc_interface_setup(interface); 1474 if (!rc) 1475 return interface; 1476 1477 fcoe_ctlr_destroy(ctlr); 1478 dev_put(netdev); 1479 fcoe_ctlr_device_delete(ctlr_dev); 1480 return NULL; 1481 } 1482 1483 /** 1484 * bnx2fc_if_create - Create FCoE instance on a given interface 1485 * 1486 * @interface: FCoE interface to create a local port on 1487 * @parent: Device pointer to be the parent in sysfs for the SCSI host 1488 * @npiv: Indicates if the port is vport or not 1489 * 1490 * Creates a fc_lport instance and a Scsi_Host instance and configure them. 1491 * 1492 * Returns: Allocated fc_lport or an error pointer 1493 */ 1494 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 1495 struct device *parent, int npiv) 1496 { 1497 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1498 struct fc_lport *lport, *n_port; 1499 struct fcoe_port *port; 1500 struct Scsi_Host *shost; 1501 struct fc_vport *vport = dev_to_vport(parent); 1502 struct bnx2fc_lport *blport; 1503 struct bnx2fc_hba *hba = interface->hba; 1504 int rc = 0; 1505 1506 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); 1507 if (!blport) { 1508 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); 1509 return NULL; 1510 } 1511 1512 /* Allocate Scsi_Host structure */ 1513 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds; 1514 if (!npiv) 1515 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); 1516 else 1517 lport = libfc_vport_create(vport, sizeof(*port)); 1518 1519 if (!lport) { 1520 printk(KERN_ERR PFX "could not allocate scsi host structure\n"); 1521 goto free_blport; 1522 } 1523 shost = lport->host; 1524 port = lport_priv(lport); 1525 port->lport = lport; 1526 port->priv = interface; 1527 port->get_netdev = bnx2fc_netdev; 1528 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work); 1529 1530 /* Configure fcoe_port */ 1531 rc = bnx2fc_lport_config(lport); 1532 if (rc) 1533 goto lp_config_err; 1534 1535 if (npiv) { 1536 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", 1537 vport->node_name, vport->port_name); 1538 fc_set_wwnn(lport, vport->node_name); 1539 fc_set_wwpn(lport, vport->port_name); 1540 } 1541 /* Configure netdev and networking properties of the lport */ 1542 rc = bnx2fc_net_config(lport, interface->netdev); 1543 if (rc) { 1544 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); 1545 goto lp_config_err; 1546 } 1547 1548 rc = bnx2fc_shost_config(lport, parent); 1549 if (rc) { 1550 printk(KERN_ERR PFX "Couldn't configure shost for %s\n", 1551 interface->netdev->name); 1552 goto lp_config_err; 1553 } 1554 1555 /* Initialize the libfc library */ 1556 rc = bnx2fc_libfc_config(lport); 1557 if (rc) { 1558 printk(KERN_ERR PFX "Couldn't configure libfc\n"); 1559 goto shost_err; 1560 } 1561 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1562 1563 if (bnx2fc_devloss_tmo) 1564 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo; 1565 1566 /* Allocate exchange manager */ 1567 if (!npiv) 1568 rc = bnx2fc_em_config(lport, hba); 1569 else { 1570 shost = vport_to_shost(vport); 1571 n_port = shost_priv(shost); 1572 rc = fc_exch_mgr_list_clone(n_port, lport); 1573 } 1574 1575 if (rc) { 1576 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); 1577 goto shost_err; 1578 } 1579 1580 bnx2fc_interface_get(interface); 1581 1582 spin_lock_bh(&hba->hba_lock); 1583 blport->lport = lport; 1584 list_add_tail(&blport->list, &hba->vports); 1585 spin_unlock_bh(&hba->hba_lock); 1586 1587 return lport; 1588 1589 shost_err: 1590 scsi_remove_host(shost); 1591 lp_config_err: 1592 scsi_host_put(lport->host); 1593 free_blport: 1594 kfree(blport); 1595 return NULL; 1596 } 1597 1598 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) 1599 { 1600 /* Dont listen for Ethernet packets anymore */ 1601 __dev_remove_pack(&interface->fcoe_packet_type); 1602 __dev_remove_pack(&interface->fip_packet_type); 1603 synchronize_net(); 1604 } 1605 1606 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) 1607 { 1608 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1609 struct fc_lport *lport = ctlr->lp; 1610 struct fcoe_port *port = lport_priv(lport); 1611 struct bnx2fc_hba *hba = interface->hba; 1612 1613 /* Stop the transmit retry timer */ 1614 del_timer_sync(&port->timer); 1615 1616 /* Free existing transmit skbs */ 1617 fcoe_clean_pending_queue(lport); 1618 1619 bnx2fc_net_cleanup(interface); 1620 1621 bnx2fc_free_vport(hba, lport); 1622 } 1623 1624 static void bnx2fc_if_destroy(struct fc_lport *lport) 1625 { 1626 1627 /* Free queued packets for the receive thread */ 1628 bnx2fc_clean_rx_queue(lport); 1629 1630 /* Detach from scsi-ml */ 1631 fc_remove_host(lport->host); 1632 scsi_remove_host(lport->host); 1633 1634 /* 1635 * Note that only the physical lport will have the exchange manager. 1636 * for vports, this function is NOP 1637 */ 1638 fc_exch_mgr_free(lport); 1639 1640 /* Free memory used by statistical counters */ 1641 fc_lport_free_stats(lport); 1642 1643 /* Release Scsi_Host */ 1644 scsi_host_put(lport->host); 1645 } 1646 1647 static void __bnx2fc_destroy(struct bnx2fc_interface *interface) 1648 { 1649 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1650 struct fc_lport *lport = ctlr->lp; 1651 struct fcoe_port *port = lport_priv(lport); 1652 1653 bnx2fc_interface_cleanup(interface); 1654 bnx2fc_stop(interface); 1655 list_del(&interface->list); 1656 bnx2fc_interface_put(interface); 1657 queue_work(bnx2fc_wq, &port->destroy_work); 1658 } 1659 1660 /** 1661 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface 1662 * 1663 * @netdev: The net device that the FCoE interface is on 1664 * 1665 * Called from sysfs. 1666 * 1667 * Returns: 0 for success 1668 */ 1669 static int bnx2fc_destroy(struct net_device *netdev) 1670 { 1671 struct bnx2fc_interface *interface = NULL; 1672 struct workqueue_struct *timer_work_queue; 1673 struct fcoe_ctlr *ctlr; 1674 int rc = 0; 1675 1676 rtnl_lock(); 1677 mutex_lock(&bnx2fc_dev_lock); 1678 1679 interface = bnx2fc_interface_lookup(netdev); 1680 ctlr = bnx2fc_to_ctlr(interface); 1681 if (!interface || !ctlr->lp) { 1682 rc = -ENODEV; 1683 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); 1684 goto netdev_err; 1685 } 1686 1687 timer_work_queue = interface->timer_work_queue; 1688 __bnx2fc_destroy(interface); 1689 destroy_workqueue(timer_work_queue); 1690 1691 netdev_err: 1692 mutex_unlock(&bnx2fc_dev_lock); 1693 rtnl_unlock(); 1694 return rc; 1695 } 1696 1697 static void bnx2fc_destroy_work(struct work_struct *work) 1698 { 1699 struct fcoe_port *port; 1700 struct fc_lport *lport; 1701 1702 port = container_of(work, struct fcoe_port, destroy_work); 1703 lport = port->lport; 1704 1705 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n"); 1706 1707 bnx2fc_if_destroy(lport); 1708 } 1709 1710 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) 1711 { 1712 bnx2fc_free_fw_resc(hba); 1713 bnx2fc_free_task_ctx(hba); 1714 } 1715 1716 /** 1717 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated 1718 * pci structure 1719 * 1720 * @hba: Adapter instance 1721 */ 1722 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) 1723 { 1724 if (bnx2fc_setup_task_ctx(hba)) 1725 goto mem_err; 1726 1727 if (bnx2fc_setup_fw_resc(hba)) 1728 goto mem_err; 1729 1730 return 0; 1731 mem_err: 1732 bnx2fc_unbind_adapter_devices(hba); 1733 return -ENOMEM; 1734 } 1735 1736 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) 1737 { 1738 struct cnic_dev *cnic; 1739 struct pci_dev *pdev; 1740 1741 if (!hba->cnic) { 1742 printk(KERN_ERR PFX "cnic is NULL\n"); 1743 return -ENODEV; 1744 } 1745 cnic = hba->cnic; 1746 pdev = hba->pcidev = cnic->pcidev; 1747 if (!hba->pcidev) 1748 return -ENODEV; 1749 1750 switch (pdev->device) { 1751 case PCI_DEVICE_ID_NX2_57710: 1752 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN); 1753 break; 1754 case PCI_DEVICE_ID_NX2_57711: 1755 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN); 1756 break; 1757 case PCI_DEVICE_ID_NX2_57712: 1758 case PCI_DEVICE_ID_NX2_57712_MF: 1759 case PCI_DEVICE_ID_NX2_57712_VF: 1760 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN); 1761 break; 1762 case PCI_DEVICE_ID_NX2_57800: 1763 case PCI_DEVICE_ID_NX2_57800_MF: 1764 case PCI_DEVICE_ID_NX2_57800_VF: 1765 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN); 1766 break; 1767 case PCI_DEVICE_ID_NX2_57810: 1768 case PCI_DEVICE_ID_NX2_57810_MF: 1769 case PCI_DEVICE_ID_NX2_57810_VF: 1770 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN); 1771 break; 1772 case PCI_DEVICE_ID_NX2_57840: 1773 case PCI_DEVICE_ID_NX2_57840_MF: 1774 case PCI_DEVICE_ID_NX2_57840_VF: 1775 case PCI_DEVICE_ID_NX2_57840_2_20: 1776 case PCI_DEVICE_ID_NX2_57840_4_10: 1777 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN); 1778 break; 1779 default: 1780 pr_err(PFX "Unknown device id 0x%x\n", pdev->device); 1781 break; 1782 } 1783 pci_dev_get(hba->pcidev); 1784 return 0; 1785 } 1786 1787 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) 1788 { 1789 if (hba->pcidev) { 1790 hba->chip_num[0] = '\0'; 1791 pci_dev_put(hba->pcidev); 1792 } 1793 hba->pcidev = NULL; 1794 } 1795 1796 /** 1797 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats 1798 * 1799 * @handle: transport handle pointing to adapter structure 1800 */ 1801 static int bnx2fc_ulp_get_stats(void *handle) 1802 { 1803 struct bnx2fc_hba *hba = handle; 1804 struct cnic_dev *cnic; 1805 struct fcoe_stats_info *stats_addr; 1806 1807 if (!hba) 1808 return -EINVAL; 1809 1810 cnic = hba->cnic; 1811 stats_addr = &cnic->stats_addr->fcoe_stat; 1812 if (!stats_addr) 1813 return -EINVAL; 1814 1815 strncpy(stats_addr->version, BNX2FC_VERSION, 1816 sizeof(stats_addr->version)); 1817 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX; 1818 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX; 1819 1820 return 0; 1821 } 1822 1823 1824 /** 1825 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance 1826 * 1827 * @handle: transport handle pointing to adapter structure 1828 * 1829 * This function maps adapter structure to pcidev structure and initiates 1830 * firmware handshake to enable/initialize on-chip FCoE components. 1831 * This bnx2fc - cnic interface api callback is used after following 1832 * conditions are met - 1833 * a) underlying network interface is up (marked by event NETDEV_UP 1834 * from netdev 1835 * b) bnx2fc adatper structure is registered. 1836 */ 1837 static void bnx2fc_ulp_start(void *handle) 1838 { 1839 struct bnx2fc_hba *hba = handle; 1840 struct bnx2fc_interface *interface; 1841 struct fcoe_ctlr *ctlr; 1842 struct fc_lport *lport; 1843 1844 mutex_lock(&bnx2fc_dev_lock); 1845 1846 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1847 bnx2fc_fw_init(hba); 1848 1849 BNX2FC_MISC_DBG("bnx2fc started.\n"); 1850 1851 list_for_each_entry(interface, &if_list, list) { 1852 if (interface->hba == hba) { 1853 ctlr = bnx2fc_to_ctlr(interface); 1854 lport = ctlr->lp; 1855 /* Kick off Fabric discovery*/ 1856 printk(KERN_ERR PFX "ulp_init: start discovery\n"); 1857 lport->tt.frame_send = bnx2fc_xmit; 1858 bnx2fc_start_disc(interface); 1859 } 1860 } 1861 1862 mutex_unlock(&bnx2fc_dev_lock); 1863 } 1864 1865 static void bnx2fc_port_shutdown(struct fc_lport *lport) 1866 { 1867 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1868 fc_fabric_logoff(lport); 1869 fc_lport_destroy(lport); 1870 } 1871 1872 static void bnx2fc_stop(struct bnx2fc_interface *interface) 1873 { 1874 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1875 struct fc_lport *lport; 1876 struct fc_lport *vport; 1877 1878 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) 1879 return; 1880 1881 lport = ctlr->lp; 1882 bnx2fc_port_shutdown(lport); 1883 1884 mutex_lock(&lport->lp_mutex); 1885 list_for_each_entry(vport, &lport->vports, list) 1886 fc_host_port_type(vport->host) = 1887 FC_PORTTYPE_UNKNOWN; 1888 mutex_unlock(&lport->lp_mutex); 1889 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1890 fcoe_ctlr_link_down(ctlr); 1891 fcoe_clean_pending_queue(lport); 1892 } 1893 1894 static int bnx2fc_fw_init(struct bnx2fc_hba *hba) 1895 { 1896 #define BNX2FC_INIT_POLL_TIME (1000 / HZ) 1897 int rc = -1; 1898 int i = HZ; 1899 1900 rc = bnx2fc_bind_adapter_devices(hba); 1901 if (rc) { 1902 printk(KERN_ALERT PFX 1903 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); 1904 goto err_out; 1905 } 1906 1907 rc = bnx2fc_send_fw_fcoe_init_msg(hba); 1908 if (rc) { 1909 printk(KERN_ALERT PFX 1910 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); 1911 goto err_unbind; 1912 } 1913 1914 /* 1915 * Wait until the adapter init message is complete, and adapter 1916 * state is UP. 1917 */ 1918 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) 1919 msleep(BNX2FC_INIT_POLL_TIME); 1920 1921 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { 1922 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " 1923 "Ignoring...\n", 1924 hba->cnic->netdev->name); 1925 rc = -1; 1926 goto err_unbind; 1927 } 1928 1929 1930 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); 1931 return 0; 1932 1933 err_unbind: 1934 bnx2fc_unbind_adapter_devices(hba); 1935 err_out: 1936 return rc; 1937 } 1938 1939 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) 1940 { 1941 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { 1942 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { 1943 timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer, 1944 0); 1945 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + 1946 jiffies; 1947 add_timer(&hba->destroy_timer); 1948 wait_event_interruptible(hba->destroy_wait, 1949 test_bit(BNX2FC_FLAG_DESTROY_CMPL, 1950 &hba->flags)); 1951 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 1952 /* This should never happen */ 1953 if (signal_pending(current)) 1954 flush_signals(current); 1955 1956 del_timer_sync(&hba->destroy_timer); 1957 } 1958 bnx2fc_unbind_adapter_devices(hba); 1959 } 1960 } 1961 1962 /** 1963 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance 1964 * 1965 * @handle: transport handle pointing to adapter structure 1966 * 1967 * Driver checks if adapter is already in shutdown mode, if not start 1968 * the shutdown process. 1969 */ 1970 static void bnx2fc_ulp_stop(void *handle) 1971 { 1972 struct bnx2fc_hba *hba = handle; 1973 struct bnx2fc_interface *interface; 1974 1975 printk(KERN_ERR "ULP_STOP\n"); 1976 1977 mutex_lock(&bnx2fc_dev_lock); 1978 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1979 goto exit; 1980 list_for_each_entry(interface, &if_list, list) { 1981 if (interface->hba == hba) 1982 bnx2fc_stop(interface); 1983 } 1984 BUG_ON(hba->num_ofld_sess != 0); 1985 1986 mutex_lock(&hba->hba_mutex); 1987 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 1988 clear_bit(ADAPTER_STATE_GOING_DOWN, 1989 &hba->adapter_state); 1990 1991 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 1992 mutex_unlock(&hba->hba_mutex); 1993 1994 bnx2fc_fw_destroy(hba); 1995 exit: 1996 mutex_unlock(&bnx2fc_dev_lock); 1997 } 1998 1999 static void bnx2fc_start_disc(struct bnx2fc_interface *interface) 2000 { 2001 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 2002 struct fc_lport *lport; 2003 int wait_cnt = 0; 2004 2005 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2006 /* Kick off FIP/FLOGI */ 2007 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 2008 printk(KERN_ERR PFX "Init not done yet\n"); 2009 return; 2010 } 2011 2012 lport = ctlr->lp; 2013 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); 2014 2015 if (!bnx2fc_link_ok(lport) && interface->enabled) { 2016 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); 2017 fcoe_ctlr_link_up(ctlr); 2018 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2019 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2020 } 2021 2022 /* wait for the FCF to be selected before issuing FLOGI */ 2023 while (!ctlr->sel_fcf) { 2024 msleep(250); 2025 /* give up after 3 secs */ 2026 if (++wait_cnt > 12) 2027 break; 2028 } 2029 2030 /* Reset max receive frame size to default */ 2031 if (fc_set_mfs(lport, BNX2FC_MFS)) 2032 return; 2033 2034 fc_lport_init(lport); 2035 fc_fabric_login(lport); 2036 } 2037 2038 2039 /** 2040 * bnx2fc_ulp_init - Initialize an adapter instance 2041 * 2042 * @dev : cnic device handle 2043 * Called from cnic_register_driver() context to initialize all 2044 * enumerated cnic devices. This routine allocates adapter structure 2045 * and other device specific resources. 2046 */ 2047 static void bnx2fc_ulp_init(struct cnic_dev *dev) 2048 { 2049 struct bnx2fc_hba *hba; 2050 int rc = 0; 2051 2052 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2053 /* bnx2fc works only when bnx2x is loaded */ 2054 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || 2055 (dev->max_fcoe_conn == 0)) { 2056 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," 2057 " flags: %lx fcoe_conn: %d\n", 2058 dev->netdev->name, dev->flags, dev->max_fcoe_conn); 2059 return; 2060 } 2061 2062 hba = bnx2fc_hba_create(dev); 2063 if (!hba) { 2064 printk(KERN_ERR PFX "hba initialization failed\n"); 2065 return; 2066 } 2067 2068 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name); 2069 2070 /* Add HBA to the adapter list */ 2071 mutex_lock(&bnx2fc_dev_lock); 2072 list_add_tail(&hba->list, &adapter_list); 2073 adapter_count++; 2074 mutex_unlock(&bnx2fc_dev_lock); 2075 2076 dev->fcoe_cap = &hba->fcoe_cap; 2077 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2078 rc = dev->register_device(dev, CNIC_ULP_FCOE, 2079 (void *) hba); 2080 if (rc) 2081 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); 2082 else 2083 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2084 } 2085 2086 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */ 2087 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr) 2088 { 2089 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2090 2091 if (interface->enabled) { 2092 if (!ctlr->lp) { 2093 pr_err(PFX "__bnx2fc_disable: lport not found\n"); 2094 return -ENODEV; 2095 } else { 2096 interface->enabled = false; 2097 fcoe_ctlr_link_down(ctlr); 2098 fcoe_clean_pending_queue(ctlr->lp); 2099 } 2100 } 2101 return 0; 2102 } 2103 2104 /* 2105 * Deperecated: Use bnx2fc_enabled() 2106 */ 2107 static int bnx2fc_disable(struct net_device *netdev) 2108 { 2109 struct bnx2fc_interface *interface; 2110 struct fcoe_ctlr *ctlr; 2111 int rc = 0; 2112 2113 rtnl_lock(); 2114 mutex_lock(&bnx2fc_dev_lock); 2115 2116 interface = bnx2fc_interface_lookup(netdev); 2117 ctlr = bnx2fc_to_ctlr(interface); 2118 2119 if (!interface) { 2120 rc = -ENODEV; 2121 pr_err(PFX "bnx2fc_disable: interface not found\n"); 2122 } else { 2123 rc = __bnx2fc_disable(ctlr); 2124 } 2125 mutex_unlock(&bnx2fc_dev_lock); 2126 rtnl_unlock(); 2127 return rc; 2128 } 2129 2130 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport, 2131 struct cnic_fc_npiv_tbl *npiv_tbl) 2132 { 2133 struct fc_vport_identifiers vpid; 2134 uint i, created = 0; 2135 u64 wwnn = 0; 2136 char wwpn_str[32]; 2137 char wwnn_str[32]; 2138 2139 if (npiv_tbl->count > MAX_NPIV_ENTRIES) { 2140 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n"); 2141 goto done; 2142 } 2143 2144 /* Sanity check the first entry to make sure it's not 0 */ 2145 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 && 2146 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) { 2147 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n"); 2148 goto done; 2149 } 2150 2151 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR; 2152 vpid.vport_type = FC_PORTTYPE_NPIV; 2153 vpid.disable = false; 2154 2155 for (i = 0; i < npiv_tbl->count; i++) { 2156 wwnn = wwn_to_u64(npiv_tbl->wwnn[i]); 2157 if (wwnn == 0) { 2158 /* 2159 * If we get a 0 element from for the WWNN then assume 2160 * the WWNN should be the same as the physical port. 2161 */ 2162 wwnn = lport->wwnn; 2163 } 2164 vpid.node_name = wwnn; 2165 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]); 2166 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name), 2167 "NPIV[%u]:%016llx-%016llx", 2168 created, vpid.port_name, vpid.node_name); 2169 fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str)); 2170 fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str)); 2171 BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str, 2172 wwpn_str); 2173 if (fc_vport_create(lport->host, 0, &vpid)) 2174 created++; 2175 else 2176 BNX2FC_HBA_DBG(lport, "Failed to create vport\n"); 2177 } 2178 done: 2179 return created; 2180 } 2181 2182 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr) 2183 { 2184 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2185 struct bnx2fc_hba *hba; 2186 struct cnic_fc_npiv_tbl *npiv_tbl; 2187 struct fc_lport *lport; 2188 2189 if (!interface->enabled) { 2190 if (!ctlr->lp) { 2191 pr_err(PFX "__bnx2fc_enable: lport not found\n"); 2192 return -ENODEV; 2193 } else if (!bnx2fc_link_ok(ctlr->lp)) { 2194 fcoe_ctlr_link_up(ctlr); 2195 interface->enabled = true; 2196 } 2197 } 2198 2199 /* Create static NPIV ports if any are contained in NVRAM */ 2200 hba = interface->hba; 2201 lport = ctlr->lp; 2202 2203 if (!hba) 2204 goto done; 2205 2206 if (!hba->cnic) 2207 goto done; 2208 2209 if (!lport) 2210 goto done; 2211 2212 if (!lport->host) 2213 goto done; 2214 2215 if (!hba->cnic->get_fc_npiv_tbl) 2216 goto done; 2217 2218 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL); 2219 if (!npiv_tbl) 2220 goto done; 2221 2222 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl)) 2223 goto done_free; 2224 2225 bnx2fc_npiv_create_vports(lport, npiv_tbl); 2226 done_free: 2227 kfree(npiv_tbl); 2228 done: 2229 return 0; 2230 } 2231 2232 /* 2233 * Deprecated: Use bnx2fc_enabled() 2234 */ 2235 static int bnx2fc_enable(struct net_device *netdev) 2236 { 2237 struct bnx2fc_interface *interface; 2238 struct fcoe_ctlr *ctlr; 2239 int rc = 0; 2240 2241 rtnl_lock(); 2242 mutex_lock(&bnx2fc_dev_lock); 2243 2244 interface = bnx2fc_interface_lookup(netdev); 2245 ctlr = bnx2fc_to_ctlr(interface); 2246 if (!interface) { 2247 rc = -ENODEV; 2248 pr_err(PFX "bnx2fc_enable: interface not found\n"); 2249 } else { 2250 rc = __bnx2fc_enable(ctlr); 2251 } 2252 2253 mutex_unlock(&bnx2fc_dev_lock); 2254 rtnl_unlock(); 2255 return rc; 2256 } 2257 2258 /** 2259 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller 2260 * @cdev: The FCoE Controller that is being enabled or disabled 2261 * 2262 * fcoe_sysfs will ensure that the state of 'enabled' has 2263 * changed, so no checking is necessary here. This routine simply 2264 * calls fcoe_enable or fcoe_disable, both of which are deprecated. 2265 * When those routines are removed the functionality can be merged 2266 * here. 2267 */ 2268 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev) 2269 { 2270 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); 2271 2272 switch (cdev->enabled) { 2273 case FCOE_CTLR_ENABLED: 2274 return __bnx2fc_enable(ctlr); 2275 case FCOE_CTLR_DISABLED: 2276 return __bnx2fc_disable(ctlr); 2277 case FCOE_CTLR_UNUSED: 2278 default: 2279 return -ENOTSUPP; 2280 } 2281 } 2282 2283 enum bnx2fc_create_link_state { 2284 BNX2FC_CREATE_LINK_DOWN, 2285 BNX2FC_CREATE_LINK_UP, 2286 }; 2287 2288 /** 2289 * _bnx2fc_create() - Create bnx2fc FCoE interface 2290 * @netdev : The net_device object the Ethernet interface to create on 2291 * @fip_mode: The FIP mode for this creation 2292 * @link_state: The ctlr link state on creation 2293 * 2294 * Called from either the libfcoe 'create' module parameter 2295 * via fcoe_create or from fcoe_syfs's ctlr_create file. 2296 * 2297 * libfcoe's 'create' module parameter is deprecated so some 2298 * consolidation of code can be done when that interface is 2299 * removed. 2300 * 2301 * Returns: 0 for success 2302 */ 2303 static int _bnx2fc_create(struct net_device *netdev, 2304 enum fip_mode fip_mode, 2305 enum bnx2fc_create_link_state link_state) 2306 { 2307 struct fcoe_ctlr_device *cdev; 2308 struct fcoe_ctlr *ctlr; 2309 struct bnx2fc_interface *interface; 2310 struct bnx2fc_hba *hba; 2311 struct net_device *phys_dev = netdev; 2312 struct fc_lport *lport; 2313 struct ethtool_drvinfo drvinfo; 2314 int rc = 0; 2315 int vlan_id = 0; 2316 2317 BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); 2318 if (fip_mode != FIP_MODE_FABRIC) { 2319 printk(KERN_ERR "fip mode not FABRIC\n"); 2320 return -EIO; 2321 } 2322 2323 rtnl_lock(); 2324 2325 mutex_lock(&bnx2fc_dev_lock); 2326 2327 if (!try_module_get(THIS_MODULE)) { 2328 rc = -EINVAL; 2329 goto mod_err; 2330 } 2331 2332 /* obtain physical netdev */ 2333 if (is_vlan_dev(netdev)) 2334 phys_dev = vlan_dev_real_dev(netdev); 2335 2336 /* verify if the physical device is a netxtreme2 device */ 2337 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { 2338 memset(&drvinfo, 0, sizeof(drvinfo)); 2339 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); 2340 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { 2341 printk(KERN_ERR PFX "Not a netxtreme2 device\n"); 2342 rc = -EINVAL; 2343 goto netdev_err; 2344 } 2345 } else { 2346 printk(KERN_ERR PFX "unable to obtain drv_info\n"); 2347 rc = -EINVAL; 2348 goto netdev_err; 2349 } 2350 2351 /* obtain interface and initialize rest of the structure */ 2352 hba = bnx2fc_hba_lookup(phys_dev); 2353 if (!hba) { 2354 rc = -ENODEV; 2355 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); 2356 goto netdev_err; 2357 } 2358 2359 if (bnx2fc_interface_lookup(netdev)) { 2360 rc = -EEXIST; 2361 goto netdev_err; 2362 } 2363 2364 interface = bnx2fc_interface_create(hba, netdev, fip_mode); 2365 if (!interface) { 2366 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); 2367 rc = -ENOMEM; 2368 goto netdev_err; 2369 } 2370 2371 if (is_vlan_dev(netdev)) { 2372 vlan_id = vlan_dev_vlan_id(netdev); 2373 interface->vlan_enabled = 1; 2374 } 2375 2376 ctlr = bnx2fc_to_ctlr(interface); 2377 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 2378 interface->vlan_id = vlan_id; 2379 interface->tm_timeout = BNX2FC_TM_TIMEOUT; 2380 2381 interface->timer_work_queue = 2382 create_singlethread_workqueue("bnx2fc_timer_wq"); 2383 if (!interface->timer_work_queue) { 2384 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); 2385 rc = -EINVAL; 2386 goto ifput_err; 2387 } 2388 2389 lport = bnx2fc_if_create(interface, &cdev->dev, 0); 2390 if (!lport) { 2391 printk(KERN_ERR PFX "Failed to create interface (%s)\n", 2392 netdev->name); 2393 rc = -EINVAL; 2394 goto if_create_err; 2395 } 2396 2397 /* Add interface to if_list */ 2398 list_add_tail(&interface->list, &if_list); 2399 2400 lport->boot_time = jiffies; 2401 2402 /* Make this master N_port */ 2403 ctlr->lp = lport; 2404 2405 if (link_state == BNX2FC_CREATE_LINK_UP) 2406 cdev->enabled = FCOE_CTLR_ENABLED; 2407 else 2408 cdev->enabled = FCOE_CTLR_DISABLED; 2409 2410 if (link_state == BNX2FC_CREATE_LINK_UP && 2411 !bnx2fc_link_ok(lport)) { 2412 fcoe_ctlr_link_up(ctlr); 2413 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2414 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2415 } 2416 2417 BNX2FC_HBA_DBG(lport, "create: START DISC\n"); 2418 bnx2fc_start_disc(interface); 2419 2420 if (link_state == BNX2FC_CREATE_LINK_UP) 2421 interface->enabled = true; 2422 2423 /* 2424 * Release from kref_init in bnx2fc_interface_setup, on success 2425 * lport should be holding a reference taken in bnx2fc_if_create 2426 */ 2427 bnx2fc_interface_put(interface); 2428 /* put netdev that was held while calling dev_get_by_name */ 2429 mutex_unlock(&bnx2fc_dev_lock); 2430 rtnl_unlock(); 2431 return 0; 2432 2433 if_create_err: 2434 destroy_workqueue(interface->timer_work_queue); 2435 ifput_err: 2436 bnx2fc_net_cleanup(interface); 2437 bnx2fc_interface_put(interface); 2438 goto mod_err; 2439 netdev_err: 2440 module_put(THIS_MODULE); 2441 mod_err: 2442 mutex_unlock(&bnx2fc_dev_lock); 2443 rtnl_unlock(); 2444 return rc; 2445 } 2446 2447 /** 2448 * bnx2fc_create() - Create a bnx2fc interface 2449 * @netdev : The net_device object the Ethernet interface to create on 2450 * @fip_mode: The FIP mode for this creation 2451 * 2452 * Called from fcoe transport 2453 * 2454 * Returns: 0 for success 2455 */ 2456 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode) 2457 { 2458 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP); 2459 } 2460 2461 /** 2462 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs 2463 * @netdev: The net_device to be used by the allocated FCoE Controller 2464 * 2465 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr 2466 * in a link_down state. The allows the user an opportunity to configure 2467 * the FCoE Controller from sysfs before enabling the FCoE Controller. 2468 * 2469 * Creating in with this routine starts the FCoE Controller in Fabric 2470 * mode. The user can change to VN2VN or another mode before enabling. 2471 */ 2472 static int bnx2fc_ctlr_alloc(struct net_device *netdev) 2473 { 2474 return _bnx2fc_create(netdev, FIP_MODE_FABRIC, 2475 BNX2FC_CREATE_LINK_DOWN); 2476 } 2477 2478 /** 2479 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance 2480 * 2481 * @cnic: Pointer to cnic device instance 2482 * 2483 **/ 2484 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) 2485 { 2486 struct bnx2fc_hba *hba; 2487 2488 /* Called with bnx2fc_dev_lock held */ 2489 list_for_each_entry(hba, &adapter_list, list) { 2490 if (hba->cnic == cnic) 2491 return hba; 2492 } 2493 return NULL; 2494 } 2495 2496 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 2497 *netdev) 2498 { 2499 struct bnx2fc_interface *interface; 2500 2501 /* Called with bnx2fc_dev_lock held */ 2502 list_for_each_entry(interface, &if_list, list) { 2503 if (interface->netdev == netdev) 2504 return interface; 2505 } 2506 return NULL; 2507 } 2508 2509 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device 2510 *phys_dev) 2511 { 2512 struct bnx2fc_hba *hba; 2513 2514 /* Called with bnx2fc_dev_lock held */ 2515 list_for_each_entry(hba, &adapter_list, list) { 2516 if (hba->phys_dev == phys_dev) 2517 return hba; 2518 } 2519 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); 2520 return NULL; 2521 } 2522 2523 /** 2524 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources 2525 * 2526 * @dev: cnic device handle 2527 */ 2528 static void bnx2fc_ulp_exit(struct cnic_dev *dev) 2529 { 2530 struct bnx2fc_hba *hba; 2531 struct bnx2fc_interface *interface, *tmp; 2532 2533 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); 2534 2535 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { 2536 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", 2537 dev->netdev->name, dev->flags); 2538 return; 2539 } 2540 2541 mutex_lock(&bnx2fc_dev_lock); 2542 hba = bnx2fc_find_hba_for_cnic(dev); 2543 if (!hba) { 2544 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", 2545 dev); 2546 mutex_unlock(&bnx2fc_dev_lock); 2547 return; 2548 } 2549 2550 list_del_init(&hba->list); 2551 adapter_count--; 2552 2553 list_for_each_entry_safe(interface, tmp, &if_list, list) 2554 /* destroy not called yet, move to quiesced list */ 2555 if (interface->hba == hba) 2556 __bnx2fc_destroy(interface); 2557 mutex_unlock(&bnx2fc_dev_lock); 2558 2559 /* Ensure ALL destroy work has been completed before return */ 2560 flush_workqueue(bnx2fc_wq); 2561 2562 bnx2fc_ulp_stop(hba); 2563 /* unregister cnic device */ 2564 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) 2565 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); 2566 bnx2fc_hba_destroy(hba); 2567 } 2568 2569 static void bnx2fc_rport_terminate_io(struct fc_rport *rport) 2570 { 2571 /* This is a no-op */ 2572 } 2573 2574 /** 2575 * bnx2fc_fcoe_reset - Resets the fcoe 2576 * 2577 * @shost: shost the reset is from 2578 * 2579 * Returns: always 0 2580 */ 2581 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) 2582 { 2583 struct fc_lport *lport = shost_priv(shost); 2584 fc_lport_reset(lport); 2585 return 0; 2586 } 2587 2588 2589 static bool bnx2fc_match(struct net_device *netdev) 2590 { 2591 struct net_device *phys_dev = netdev; 2592 2593 mutex_lock(&bnx2fc_dev_lock); 2594 if (is_vlan_dev(netdev)) 2595 phys_dev = vlan_dev_real_dev(netdev); 2596 2597 if (bnx2fc_hba_lookup(phys_dev)) { 2598 mutex_unlock(&bnx2fc_dev_lock); 2599 return true; 2600 } 2601 2602 mutex_unlock(&bnx2fc_dev_lock); 2603 return false; 2604 } 2605 2606 2607 static struct fcoe_transport bnx2fc_transport = { 2608 .name = {"bnx2fc"}, 2609 .attached = false, 2610 .list = LIST_HEAD_INIT(bnx2fc_transport.list), 2611 .alloc = bnx2fc_ctlr_alloc, 2612 .match = bnx2fc_match, 2613 .create = bnx2fc_create, 2614 .destroy = bnx2fc_destroy, 2615 .enable = bnx2fc_enable, 2616 .disable = bnx2fc_disable, 2617 }; 2618 2619 /** 2620 * bnx2fc_cpu_online - Create a receive thread for an online CPU 2621 * 2622 * @cpu: cpu index for the online cpu 2623 */ 2624 static int bnx2fc_cpu_online(unsigned int cpu) 2625 { 2626 struct bnx2fc_percpu_s *p; 2627 struct task_struct *thread; 2628 2629 p = &per_cpu(bnx2fc_percpu, cpu); 2630 2631 thread = kthread_create_on_node(bnx2fc_percpu_io_thread, 2632 (void *)p, cpu_to_node(cpu), 2633 "bnx2fc_thread/%d", cpu); 2634 if (IS_ERR(thread)) 2635 return PTR_ERR(thread); 2636 2637 /* bind thread to the cpu */ 2638 kthread_bind(thread, cpu); 2639 p->iothread = thread; 2640 wake_up_process(thread); 2641 return 0; 2642 } 2643 2644 static int bnx2fc_cpu_offline(unsigned int cpu) 2645 { 2646 struct bnx2fc_percpu_s *p; 2647 struct task_struct *thread; 2648 struct bnx2fc_work *work, *tmp; 2649 2650 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); 2651 2652 /* Prevent any new work from being queued for this CPU */ 2653 p = &per_cpu(bnx2fc_percpu, cpu); 2654 spin_lock_bh(&p->fp_work_lock); 2655 thread = p->iothread; 2656 p->iothread = NULL; 2657 2658 /* Free all work in the list */ 2659 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 2660 list_del_init(&work->list); 2661 bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data, 2662 work->num_rq, work->task); 2663 kfree(work); 2664 } 2665 2666 spin_unlock_bh(&p->fp_work_lock); 2667 2668 if (thread) 2669 kthread_stop(thread); 2670 return 0; 2671 } 2672 2673 static int bnx2fc_slave_configure(struct scsi_device *sdev) 2674 { 2675 if (!bnx2fc_queue_depth) 2676 return 0; 2677 2678 scsi_change_queue_depth(sdev, bnx2fc_queue_depth); 2679 return 0; 2680 } 2681 2682 static enum cpuhp_state bnx2fc_online_state; 2683 2684 /** 2685 * bnx2fc_mod_init - module init entry point 2686 * 2687 * Initialize driver wide global data structures, and register 2688 * with cnic module 2689 **/ 2690 static int __init bnx2fc_mod_init(void) 2691 { 2692 struct fcoe_percpu_s *bg; 2693 struct task_struct *l2_thread; 2694 int rc = 0; 2695 unsigned int cpu = 0; 2696 struct bnx2fc_percpu_s *p; 2697 2698 printk(KERN_INFO PFX "%s", version); 2699 2700 /* register as a fcoe transport */ 2701 rc = fcoe_transport_attach(&bnx2fc_transport); 2702 if (rc) { 2703 printk(KERN_ERR "failed to register an fcoe transport, check " 2704 "if libfcoe is loaded\n"); 2705 goto out; 2706 } 2707 2708 INIT_LIST_HEAD(&adapter_list); 2709 INIT_LIST_HEAD(&if_list); 2710 mutex_init(&bnx2fc_dev_lock); 2711 adapter_count = 0; 2712 2713 /* Attach FC transport template */ 2714 rc = bnx2fc_attach_transport(); 2715 if (rc) 2716 goto detach_ft; 2717 2718 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); 2719 if (!bnx2fc_wq) { 2720 rc = -ENOMEM; 2721 goto release_bt; 2722 } 2723 2724 bg = &bnx2fc_global; 2725 skb_queue_head_init(&bg->fcoe_rx_list); 2726 l2_thread = kthread_create(bnx2fc_l2_rcv_thread, 2727 (void *)bg, 2728 "bnx2fc_l2_thread"); 2729 if (IS_ERR(l2_thread)) { 2730 rc = PTR_ERR(l2_thread); 2731 goto free_wq; 2732 } 2733 wake_up_process(l2_thread); 2734 spin_lock_bh(&bg->fcoe_rx_list.lock); 2735 bg->kthread = l2_thread; 2736 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2737 2738 for_each_possible_cpu(cpu) { 2739 p = &per_cpu(bnx2fc_percpu, cpu); 2740 INIT_LIST_HEAD(&p->work_list); 2741 spin_lock_init(&p->fp_work_lock); 2742 } 2743 2744 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online", 2745 bnx2fc_cpu_online, bnx2fc_cpu_offline); 2746 if (rc < 0) 2747 goto stop_thread; 2748 bnx2fc_online_state = rc; 2749 2750 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); 2751 return 0; 2752 2753 stop_thread: 2754 kthread_stop(l2_thread); 2755 free_wq: 2756 destroy_workqueue(bnx2fc_wq); 2757 release_bt: 2758 bnx2fc_release_transport(); 2759 detach_ft: 2760 fcoe_transport_detach(&bnx2fc_transport); 2761 out: 2762 return rc; 2763 } 2764 2765 static void __exit bnx2fc_mod_exit(void) 2766 { 2767 LIST_HEAD(to_be_deleted); 2768 struct bnx2fc_hba *hba, *next; 2769 struct fcoe_percpu_s *bg; 2770 struct task_struct *l2_thread; 2771 struct sk_buff *skb; 2772 2773 /* 2774 * NOTE: Since cnic calls register_driver routine rtnl_lock, 2775 * it will have higher precedence than bnx2fc_dev_lock. 2776 * unregister_device() cannot be called with bnx2fc_dev_lock 2777 * held. 2778 */ 2779 mutex_lock(&bnx2fc_dev_lock); 2780 list_splice_init(&adapter_list, &to_be_deleted); 2781 adapter_count = 0; 2782 mutex_unlock(&bnx2fc_dev_lock); 2783 2784 /* Unregister with cnic */ 2785 list_for_each_entry_safe(hba, next, &to_be_deleted, list) { 2786 list_del_init(&hba->list); 2787 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", 2788 hba); 2789 bnx2fc_ulp_stop(hba); 2790 /* unregister cnic device */ 2791 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, 2792 &hba->reg_with_cnic)) 2793 hba->cnic->unregister_device(hba->cnic, 2794 CNIC_ULP_FCOE); 2795 bnx2fc_hba_destroy(hba); 2796 } 2797 cnic_unregister_driver(CNIC_ULP_FCOE); 2798 2799 /* Destroy global thread */ 2800 bg = &bnx2fc_global; 2801 spin_lock_bh(&bg->fcoe_rx_list.lock); 2802 l2_thread = bg->kthread; 2803 bg->kthread = NULL; 2804 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) 2805 kfree_skb(skb); 2806 2807 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2808 2809 if (l2_thread) 2810 kthread_stop(l2_thread); 2811 2812 cpuhp_remove_state(bnx2fc_online_state); 2813 2814 destroy_workqueue(bnx2fc_wq); 2815 /* 2816 * detach from scsi transport 2817 * must happen after all destroys are done 2818 */ 2819 bnx2fc_release_transport(); 2820 2821 /* detach from fcoe transport */ 2822 fcoe_transport_detach(&bnx2fc_transport); 2823 } 2824 2825 module_init(bnx2fc_mod_init); 2826 module_exit(bnx2fc_mod_exit); 2827 2828 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { 2829 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, 2830 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, 2831 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, 2832 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, 2833 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, 2834 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, 2835 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, 2836 2837 .get_fcoe_fcf_selected = fcoe_fcf_get_selected, 2838 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, 2839 }; 2840 2841 static struct fc_function_template bnx2fc_transport_function = { 2842 .show_host_node_name = 1, 2843 .show_host_port_name = 1, 2844 .show_host_supported_classes = 1, 2845 .show_host_supported_fc4s = 1, 2846 .show_host_active_fc4s = 1, 2847 .show_host_maxframe_size = 1, 2848 2849 .show_host_port_id = 1, 2850 .show_host_supported_speeds = 1, 2851 .get_host_speed = fc_get_host_speed, 2852 .show_host_speed = 1, 2853 .show_host_port_type = 1, 2854 .get_host_port_state = fc_get_host_port_state, 2855 .show_host_port_state = 1, 2856 .show_host_symbolic_name = 1, 2857 2858 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2859 sizeof(struct bnx2fc_rport)), 2860 .show_rport_maxframe_size = 1, 2861 .show_rport_supported_classes = 1, 2862 2863 .show_host_fabric_name = 1, 2864 .show_starget_node_name = 1, 2865 .show_starget_port_name = 1, 2866 .show_starget_port_id = 1, 2867 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2868 .show_rport_dev_loss_tmo = 1, 2869 .get_fc_host_stats = bnx2fc_get_host_stats, 2870 2871 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2872 2873 .terminate_rport_io = bnx2fc_rport_terminate_io, 2874 2875 .vport_create = bnx2fc_vport_create, 2876 .vport_delete = bnx2fc_vport_destroy, 2877 .vport_disable = bnx2fc_vport_disable, 2878 .bsg_request = fc_lport_bsg_request, 2879 }; 2880 2881 static struct fc_function_template bnx2fc_vport_xport_function = { 2882 .show_host_node_name = 1, 2883 .show_host_port_name = 1, 2884 .show_host_supported_classes = 1, 2885 .show_host_supported_fc4s = 1, 2886 .show_host_active_fc4s = 1, 2887 .show_host_maxframe_size = 1, 2888 2889 .show_host_port_id = 1, 2890 .show_host_supported_speeds = 1, 2891 .get_host_speed = fc_get_host_speed, 2892 .show_host_speed = 1, 2893 .show_host_port_type = 1, 2894 .get_host_port_state = fc_get_host_port_state, 2895 .show_host_port_state = 1, 2896 .show_host_symbolic_name = 1, 2897 2898 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2899 sizeof(struct bnx2fc_rport)), 2900 .show_rport_maxframe_size = 1, 2901 .show_rport_supported_classes = 1, 2902 2903 .show_host_fabric_name = 1, 2904 .show_starget_node_name = 1, 2905 .show_starget_port_name = 1, 2906 .show_starget_port_id = 1, 2907 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2908 .show_rport_dev_loss_tmo = 1, 2909 .get_fc_host_stats = fc_get_host_stats, 2910 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2911 .terminate_rport_io = fc_rport_terminate_io, 2912 .bsg_request = fc_lport_bsg_request, 2913 }; 2914 2915 /* 2916 * Additional scsi_host attributes. 2917 */ 2918 static ssize_t 2919 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr, 2920 char *buf) 2921 { 2922 struct Scsi_Host *shost = class_to_shost(dev); 2923 struct fc_lport *lport = shost_priv(shost); 2924 struct fcoe_port *port = lport_priv(lport); 2925 struct bnx2fc_interface *interface = port->priv; 2926 2927 sprintf(buf, "%u\n", interface->tm_timeout); 2928 return strlen(buf); 2929 } 2930 2931 static ssize_t 2932 bnx2fc_tm_timeout_store(struct device *dev, 2933 struct device_attribute *attr, const char *buf, size_t count) 2934 { 2935 struct Scsi_Host *shost = class_to_shost(dev); 2936 struct fc_lport *lport = shost_priv(shost); 2937 struct fcoe_port *port = lport_priv(lport); 2938 struct bnx2fc_interface *interface = port->priv; 2939 int rval, val; 2940 2941 rval = kstrtouint(buf, 10, &val); 2942 if (rval) 2943 return rval; 2944 if (val > 255) 2945 return -ERANGE; 2946 2947 interface->tm_timeout = (u8)val; 2948 return strlen(buf); 2949 } 2950 2951 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show, 2952 bnx2fc_tm_timeout_store); 2953 2954 static struct attribute *bnx2fc_host_attrs[] = { 2955 &dev_attr_tm_timeout.attr, 2956 NULL, 2957 }; 2958 2959 ATTRIBUTE_GROUPS(bnx2fc_host); 2960 2961 /* 2962 * scsi_host_template structure used while registering with SCSI-ml 2963 */ 2964 static struct scsi_host_template bnx2fc_shost_template = { 2965 .module = THIS_MODULE, 2966 .name = "QLogic Offload FCoE Initiator", 2967 .queuecommand = bnx2fc_queuecommand, 2968 .eh_timed_out = fc_eh_timed_out, 2969 .eh_abort_handler = bnx2fc_eh_abort, /* abts */ 2970 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ 2971 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ 2972 .eh_host_reset_handler = fc_eh_host_reset, 2973 .slave_alloc = fc_slave_alloc, 2974 .change_queue_depth = scsi_change_queue_depth, 2975 .this_id = -1, 2976 .cmd_per_lun = 3, 2977 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, 2978 .dma_boundary = 0x7fff, 2979 .max_sectors = 0x3fbf, 2980 .track_queue_depth = 1, 2981 .slave_configure = bnx2fc_slave_configure, 2982 .shost_groups = bnx2fc_host_groups, 2983 }; 2984 2985 static struct libfc_function_template bnx2fc_libfc_fcn_templ = { 2986 .frame_send = bnx2fc_xmit, 2987 .elsct_send = bnx2fc_elsct_send, 2988 .fcp_abort_io = bnx2fc_abort_io, 2989 .fcp_cleanup = bnx2fc_cleanup, 2990 .get_lesb = fcoe_get_lesb, 2991 .rport_event_callback = bnx2fc_rport_event_handler, 2992 }; 2993 2994 /* 2995 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface 2996 * structure carrying callback function pointers 2997 */ 2998 static struct cnic_ulp_ops bnx2fc_cnic_cb = { 2999 .owner = THIS_MODULE, 3000 .cnic_init = bnx2fc_ulp_init, 3001 .cnic_exit = bnx2fc_ulp_exit, 3002 .cnic_start = bnx2fc_ulp_start, 3003 .cnic_stop = bnx2fc_ulp_stop, 3004 .indicate_kcqes = bnx2fc_indicate_kcqe, 3005 .indicate_netevent = bnx2fc_indicate_netevent, 3006 .cnic_get_stats = bnx2fc_ulp_get_stats, 3007 }; 3008