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_port_destroy(struct fcoe_port *port); 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 u64 crc_err; 512 u32 fr_len, fr_crc; 513 struct fc_lport *lport; 514 struct fcoe_rcv_info *fr; 515 struct fc_stats *stats; 516 struct fc_frame_header *fh; 517 struct fcoe_crc_eof crc_eof; 518 struct fc_frame *fp; 519 struct fc_lport *vn_port; 520 struct fcoe_port *port, *phys_port; 521 u8 *mac = NULL; 522 u8 *dest_mac = NULL; 523 struct fcoe_hdr *hp; 524 struct bnx2fc_interface *interface; 525 struct fcoe_ctlr *ctlr; 526 527 fr = fcoe_dev_from_skb(skb); 528 lport = fr->fr_dev; 529 if (unlikely(lport == NULL)) { 530 printk(KERN_ERR PFX "Invalid lport struct\n"); 531 kfree_skb(skb); 532 return; 533 } 534 535 if (skb_is_nonlinear(skb)) 536 skb_linearize(skb); 537 mac = eth_hdr(skb)->h_source; 538 dest_mac = eth_hdr(skb)->h_dest; 539 540 /* Pull the header */ 541 hp = (struct fcoe_hdr *) skb_network_header(skb); 542 fh = (struct fc_frame_header *) skb_transport_header(skb); 543 skb_pull(skb, sizeof(struct fcoe_hdr)); 544 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 545 546 stats = per_cpu_ptr(lport->stats, get_cpu()); 547 stats->RxFrames++; 548 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; 549 put_cpu(); 550 551 fp = (struct fc_frame *)skb; 552 fc_frame_init(fp); 553 fr_dev(fp) = lport; 554 fr_sof(fp) = hp->fcoe_sof; 555 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 556 kfree_skb(skb); 557 return; 558 } 559 fr_eof(fp) = crc_eof.fcoe_eof; 560 fr_crc(fp) = crc_eof.fcoe_crc32; 561 if (pskb_trim(skb, fr_len)) { 562 kfree_skb(skb); 563 return; 564 } 565 566 phys_port = lport_priv(lport); 567 interface = phys_port->priv; 568 ctlr = bnx2fc_to_ctlr(interface); 569 570 fh = fc_frame_header_get(fp); 571 572 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 573 BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n", 574 dest_mac); 575 kfree_skb(skb); 576 return; 577 } 578 579 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 580 if (vn_port) { 581 port = lport_priv(vn_port); 582 if (!ether_addr_equal(port->data_src_addr, dest_mac)) { 583 BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); 584 kfree_skb(skb); 585 return; 586 } 587 } 588 if (ctlr->state) { 589 if (!ether_addr_equal(mac, ctlr->dest_addr)) { 590 BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n", 591 mac, ctlr->dest_addr); 592 kfree_skb(skb); 593 return; 594 } 595 } 596 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 597 fh->fh_type == FC_TYPE_FCP) { 598 /* Drop FCP data. We dont this in L2 path */ 599 kfree_skb(skb); 600 return; 601 } 602 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 603 fh->fh_type == FC_TYPE_ELS) { 604 switch (fc_frame_payload_op(fp)) { 605 case ELS_LOGO: 606 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 607 /* drop non-FIP LOGO */ 608 kfree_skb(skb); 609 return; 610 } 611 break; 612 } 613 } 614 615 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 616 /* Drop incoming ABTS */ 617 kfree_skb(skb); 618 return; 619 } 620 621 /* 622 * If the destination ID from the frame header does not match what we 623 * have on record for lport and the search for a NPIV port came up 624 * empty then this is not addressed to our port so simply drop it. 625 */ 626 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 627 BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", 628 lport->port_id, ntoh24(fh->fh_d_id)); 629 kfree_skb(skb); 630 return; 631 } 632 633 fr_crc = le32_to_cpu(fr_crc(fp)); 634 635 if (unlikely(fr_crc != ~crc32(~0, skb->data, fr_len))) { 636 stats = per_cpu_ptr(lport->stats, get_cpu()); 637 crc_err = (stats->InvalidCRCCount++); 638 put_cpu(); 639 if (crc_err < 5) 640 printk(KERN_WARNING PFX "dropping frame with " 641 "CRC error\n"); 642 kfree_skb(skb); 643 return; 644 } 645 fc_exch_recv(lport, fp); 646 } 647 648 /** 649 * bnx2fc_percpu_io_thread - thread per cpu for ios 650 * 651 * @arg: ptr to bnx2fc_percpu_info structure 652 */ 653 static int bnx2fc_percpu_io_thread(void *arg) 654 { 655 struct bnx2fc_percpu_s *p = arg; 656 struct bnx2fc_work *work, *tmp; 657 LIST_HEAD(work_list); 658 659 set_user_nice(current, MIN_NICE); 660 set_current_state(TASK_INTERRUPTIBLE); 661 while (!kthread_should_stop()) { 662 schedule(); 663 spin_lock_bh(&p->fp_work_lock); 664 while (!list_empty(&p->work_list)) { 665 list_splice_init(&p->work_list, &work_list); 666 spin_unlock_bh(&p->fp_work_lock); 667 668 list_for_each_entry_safe(work, tmp, &work_list, list) { 669 list_del_init(&work->list); 670 bnx2fc_process_cq_compl(work->tgt, work->wqe, 671 work->rq_data, 672 work->num_rq, 673 work->task); 674 kfree(work); 675 } 676 677 spin_lock_bh(&p->fp_work_lock); 678 } 679 __set_current_state(TASK_INTERRUPTIBLE); 680 spin_unlock_bh(&p->fp_work_lock); 681 } 682 __set_current_state(TASK_RUNNING); 683 684 return 0; 685 } 686 687 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) 688 { 689 struct fc_host_statistics *bnx2fc_stats; 690 struct fc_lport *lport = shost_priv(shost); 691 struct fcoe_port *port = lport_priv(lport); 692 struct bnx2fc_interface *interface = port->priv; 693 struct bnx2fc_hba *hba = interface->hba; 694 struct fcoe_statistics_params *fw_stats; 695 int rc = 0; 696 697 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; 698 if (!fw_stats) 699 return NULL; 700 701 mutex_lock(&hba->hba_stats_mutex); 702 703 bnx2fc_stats = fc_get_host_stats(shost); 704 705 init_completion(&hba->stat_req_done); 706 if (bnx2fc_send_stat_req(hba)) 707 goto unlock_stats_mutex; 708 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); 709 if (!rc) { 710 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); 711 goto unlock_stats_mutex; 712 } 713 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); 714 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; 715 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); 716 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; 717 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); 718 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); 719 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); 720 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; 721 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); 722 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); 723 724 bnx2fc_stats->dumped_frames = 0; 725 bnx2fc_stats->lip_count = 0; 726 bnx2fc_stats->nos_count = 0; 727 bnx2fc_stats->loss_of_sync_count = 0; 728 bnx2fc_stats->loss_of_signal_count = 0; 729 bnx2fc_stats->prim_seq_protocol_err_count = 0; 730 731 memcpy(&hba->prev_stats, hba->stats_buffer, 732 sizeof(struct fcoe_statistics_params)); 733 734 unlock_stats_mutex: 735 mutex_unlock(&hba->hba_stats_mutex); 736 return bnx2fc_stats; 737 } 738 739 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) 740 { 741 struct fcoe_port *port = lport_priv(lport); 742 struct bnx2fc_interface *interface = port->priv; 743 struct bnx2fc_hba *hba = interface->hba; 744 struct Scsi_Host *shost = lport->host; 745 int rc = 0; 746 747 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; 748 shost->max_lun = bnx2fc_max_luns; 749 shost->max_id = BNX2FC_MAX_FCP_TGT; 750 shost->max_channel = 0; 751 if (lport->vport) 752 shost->transportt = bnx2fc_vport_xport_template; 753 else 754 shost->transportt = bnx2fc_transport_template; 755 756 /* Add the new host to SCSI-ml */ 757 rc = scsi_add_host(lport->host, dev); 758 if (rc) { 759 printk(KERN_ERR PFX "Error on scsi_add_host\n"); 760 return rc; 761 } 762 if (!lport->vport) 763 fc_host_max_npiv_vports(lport->host) = USHRT_MAX; 764 snprintf(fc_host_symbolic_name(lport->host), 256, 765 "%s (QLogic %s) v%s over %s", 766 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION, 767 interface->netdev->name); 768 769 return 0; 770 } 771 772 static int bnx2fc_link_ok(struct fc_lport *lport) 773 { 774 struct fcoe_port *port = lport_priv(lport); 775 struct bnx2fc_interface *interface = port->priv; 776 struct bnx2fc_hba *hba = interface->hba; 777 struct net_device *dev = hba->phys_dev; 778 int rc = 0; 779 780 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) 781 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 782 else { 783 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 784 rc = -1; 785 } 786 return rc; 787 } 788 789 /** 790 * bnx2fc_get_link_state - get network link state 791 * 792 * @hba: adapter instance pointer 793 * 794 * updates adapter structure flag based on netdev state 795 */ 796 void bnx2fc_get_link_state(struct bnx2fc_hba *hba) 797 { 798 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) 799 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 800 else 801 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 802 } 803 804 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) 805 { 806 struct bnx2fc_hba *hba; 807 struct bnx2fc_interface *interface; 808 struct fcoe_ctlr *ctlr; 809 struct fcoe_port *port; 810 u64 wwnn, wwpn; 811 812 port = lport_priv(lport); 813 interface = port->priv; 814 ctlr = bnx2fc_to_ctlr(interface); 815 hba = interface->hba; 816 817 /* require support for get_pauseparam ethtool op. */ 818 if (!hba->phys_dev->ethtool_ops || 819 !hba->phys_dev->ethtool_ops->get_pauseparam) 820 return -EOPNOTSUPP; 821 822 if (fc_set_mfs(lport, BNX2FC_MFS)) 823 return -EINVAL; 824 825 skb_queue_head_init(&port->fcoe_pending_queue); 826 port->fcoe_pending_queue_active = 0; 827 timer_setup(&port->timer, fcoe_queue_timer, 0); 828 829 fcoe_link_speed_update(lport); 830 831 if (!lport->vport) { 832 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) 833 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 834 1, 0); 835 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); 836 fc_set_wwnn(lport, wwnn); 837 838 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) 839 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 840 2, 0); 841 842 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); 843 fc_set_wwpn(lport, wwpn); 844 } 845 846 return 0; 847 } 848 849 static void bnx2fc_destroy_timer(struct timer_list *t) 850 { 851 struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer); 852 853 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " 854 "Destroy compl not received!!\n"); 855 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 856 wake_up_interruptible(&hba->destroy_wait); 857 } 858 859 /** 860 * bnx2fc_indicate_netevent - Generic netdev event handler 861 * 862 * @context: adapter structure pointer 863 * @event: event type 864 * @vlan_id: vlan id - associated vlan id with this event 865 * 866 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and 867 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. 868 */ 869 static void bnx2fc_indicate_netevent(void *context, unsigned long event, 870 u16 vlan_id) 871 { 872 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; 873 struct fcoe_ctlr_device *cdev; 874 struct fc_lport *lport; 875 struct fc_lport *vport; 876 struct bnx2fc_interface *interface, *tmp; 877 struct fcoe_ctlr *ctlr; 878 int wait_for_upload = 0; 879 u32 link_possible = 1; 880 881 if (vlan_id != 0 && event != NETDEV_UNREGISTER) 882 return; 883 884 switch (event) { 885 case NETDEV_UP: 886 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 887 printk(KERN_ERR "indicate_netevent: "\ 888 "hba is not UP!!\n"); 889 break; 890 891 case NETDEV_DOWN: 892 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 893 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 894 link_possible = 0; 895 break; 896 897 case NETDEV_GOING_DOWN: 898 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 899 link_possible = 0; 900 break; 901 902 case NETDEV_CHANGE: 903 break; 904 905 case NETDEV_UNREGISTER: 906 if (!vlan_id) 907 return; 908 mutex_lock(&bnx2fc_dev_lock); 909 list_for_each_entry_safe(interface, tmp, &if_list, list) { 910 if (interface->hba == hba && 911 interface->vlan_id == (vlan_id & VLAN_VID_MASK)) 912 __bnx2fc_destroy(interface); 913 } 914 mutex_unlock(&bnx2fc_dev_lock); 915 return; 916 917 default: 918 return; 919 } 920 921 mutex_lock(&bnx2fc_dev_lock); 922 list_for_each_entry(interface, &if_list, list) { 923 924 if (interface->hba != hba) 925 continue; 926 927 ctlr = bnx2fc_to_ctlr(interface); 928 lport = ctlr->lp; 929 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", 930 interface->netdev->name, event); 931 932 fcoe_link_speed_update(lport); 933 934 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 935 936 if (link_possible && !bnx2fc_link_ok(lport)) { 937 switch (cdev->enabled) { 938 case FCOE_CTLR_DISABLED: 939 pr_info("Link up while interface is disabled.\n"); 940 break; 941 case FCOE_CTLR_ENABLED: 942 case FCOE_CTLR_UNUSED: 943 /* Reset max recv frame size to default */ 944 fc_set_mfs(lport, BNX2FC_MFS); 945 /* 946 * ctlr link up will only be handled during 947 * enable to avoid sending discovery 948 * solicitation on a stale vlan 949 */ 950 if (interface->enabled) 951 fcoe_ctlr_link_up(ctlr); 952 } 953 } else if (fcoe_ctlr_link_down(ctlr)) { 954 switch (cdev->enabled) { 955 case FCOE_CTLR_DISABLED: 956 pr_info("Link down while interface is disabled.\n"); 957 break; 958 case FCOE_CTLR_ENABLED: 959 case FCOE_CTLR_UNUSED: 960 mutex_lock(&lport->lp_mutex); 961 list_for_each_entry(vport, &lport->vports, list) 962 fc_host_port_type(vport->host) = 963 FC_PORTTYPE_UNKNOWN; 964 mutex_unlock(&lport->lp_mutex); 965 fc_host_port_type(lport->host) = 966 FC_PORTTYPE_UNKNOWN; 967 per_cpu_ptr(lport->stats, 968 get_cpu())->LinkFailureCount++; 969 put_cpu(); 970 fcoe_clean_pending_queue(lport); 971 wait_for_upload = 1; 972 } 973 } 974 } 975 mutex_unlock(&bnx2fc_dev_lock); 976 977 if (wait_for_upload) { 978 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 979 init_waitqueue_head(&hba->shutdown_wait); 980 BNX2FC_MISC_DBG("indicate_netevent " 981 "num_ofld_sess = %d\n", 982 hba->num_ofld_sess); 983 hba->wait_for_link_down = 1; 984 wait_event_interruptible(hba->shutdown_wait, 985 (hba->num_ofld_sess == 0)); 986 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", 987 hba->num_ofld_sess); 988 hba->wait_for_link_down = 0; 989 990 if (signal_pending(current)) 991 flush_signals(current); 992 } 993 } 994 995 static int bnx2fc_libfc_config(struct fc_lport *lport) 996 { 997 998 /* Set the function pointers set by bnx2fc driver */ 999 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, 1000 sizeof(struct libfc_function_template)); 1001 fc_elsct_init(lport); 1002 fc_exch_init(lport); 1003 fc_disc_init(lport); 1004 fc_disc_config(lport, lport); 1005 return 0; 1006 } 1007 1008 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba) 1009 { 1010 int fcoe_min_xid, fcoe_max_xid; 1011 1012 fcoe_min_xid = hba->max_xid + 1; 1013 if (nr_cpu_ids <= 2) 1014 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET; 1015 else 1016 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET; 1017 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid, 1018 fcoe_max_xid, NULL)) { 1019 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); 1020 return -ENOMEM; 1021 } 1022 1023 return 0; 1024 } 1025 1026 static int bnx2fc_lport_config(struct fc_lport *lport) 1027 { 1028 lport->link_up = 0; 1029 lport->qfull = 0; 1030 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; 1031 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; 1032 lport->e_d_tov = 2 * 1000; 1033 lport->r_a_tov = 10 * 1000; 1034 1035 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1036 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1037 lport->does_npiv = 1; 1038 1039 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); 1040 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; 1041 1042 /* alloc stats structure */ 1043 if (fc_lport_init_stats(lport)) 1044 return -ENOMEM; 1045 1046 /* Finish fc_lport configuration */ 1047 fc_lport_config(lport); 1048 1049 return 0; 1050 } 1051 1052 /** 1053 * bnx2fc_fip_recv - handle a received FIP frame. 1054 * 1055 * @skb: the received skb 1056 * @dev: associated &net_device 1057 * @ptype: the &packet_type structure which was used to register this handler. 1058 * @orig_dev: original receive &net_device, in case @ dev is a bond. 1059 * 1060 * Returns: 0 for success 1061 */ 1062 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, 1063 struct packet_type *ptype, 1064 struct net_device *orig_dev) 1065 { 1066 struct bnx2fc_interface *interface; 1067 struct fcoe_ctlr *ctlr; 1068 interface = container_of(ptype, struct bnx2fc_interface, 1069 fip_packet_type); 1070 ctlr = bnx2fc_to_ctlr(interface); 1071 fcoe_ctlr_recv(ctlr, skb); 1072 return 0; 1073 } 1074 1075 /** 1076 * bnx2fc_update_src_mac - Update Ethernet MAC filters. 1077 * 1078 * @lport: The local port 1079 * @addr: Location of data to copy 1080 * 1081 * Remove any previously-set unicast MAC filter. 1082 * Add secondary FCoE MAC address filter for our OUI. 1083 */ 1084 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) 1085 { 1086 struct fcoe_port *port = lport_priv(lport); 1087 1088 memcpy(port->data_src_addr, addr, ETH_ALEN); 1089 } 1090 1091 /** 1092 * bnx2fc_get_src_mac - return the ethernet source address for an lport 1093 * 1094 * @lport: libfc port 1095 */ 1096 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) 1097 { 1098 struct fcoe_port *port; 1099 1100 port = (struct fcoe_port *)lport_priv(lport); 1101 return port->data_src_addr; 1102 } 1103 1104 /** 1105 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. 1106 * 1107 * @fip: FCoE controller. 1108 * @skb: FIP Packet. 1109 */ 1110 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 1111 { 1112 struct fip_header *fiph; 1113 struct ethhdr *eth_hdr; 1114 u16 op; 1115 u8 sub; 1116 1117 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); 1118 eth_hdr = (struct ethhdr *)skb_mac_header(skb); 1119 op = ntohs(fiph->fip_op); 1120 sub = fiph->fip_subcode; 1121 1122 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka) 1123 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n", 1124 eth_hdr->h_source, eth_hdr->h_dest); 1125 1126 skb->dev = bnx2fc_from_ctlr(fip)->netdev; 1127 dev_queue_xmit(skb); 1128 } 1129 1130 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) 1131 { 1132 struct Scsi_Host *shost = vport_to_shost(vport); 1133 struct fc_lport *n_port = shost_priv(shost); 1134 struct fcoe_port *port = lport_priv(n_port); 1135 struct bnx2fc_interface *interface = port->priv; 1136 struct net_device *netdev = interface->netdev; 1137 struct fc_lport *vn_port; 1138 int rc; 1139 char buf[32]; 1140 1141 rc = fcoe_validate_vport_create(vport); 1142 if (rc) { 1143 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1144 printk(KERN_ERR PFX "Failed to create vport, " 1145 "WWPN (0x%s) already exists\n", 1146 buf); 1147 return rc; 1148 } 1149 1150 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1151 printk(KERN_ERR PFX "vn ports cannot be created on" 1152 "this interface\n"); 1153 return -EIO; 1154 } 1155 rtnl_lock(); 1156 mutex_lock(&bnx2fc_dev_lock); 1157 vn_port = bnx2fc_if_create(interface, &vport->dev, 1); 1158 mutex_unlock(&bnx2fc_dev_lock); 1159 rtnl_unlock(); 1160 1161 if (!vn_port) { 1162 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", 1163 netdev->name); 1164 return -EIO; 1165 } 1166 1167 if (bnx2fc_devloss_tmo) 1168 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo; 1169 1170 if (disabled) { 1171 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1172 } else { 1173 vn_port->boot_time = jiffies; 1174 fc_lport_init(vn_port); 1175 fc_fabric_login(vn_port); 1176 fc_vport_setlink(vn_port); 1177 } 1178 return 0; 1179 } 1180 1181 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) 1182 { 1183 struct bnx2fc_lport *blport, *tmp; 1184 1185 spin_lock_bh(&hba->hba_lock); 1186 list_for_each_entry_safe(blport, tmp, &hba->vports, list) { 1187 if (blport->lport == lport) { 1188 list_del(&blport->list); 1189 kfree(blport); 1190 } 1191 } 1192 spin_unlock_bh(&hba->hba_lock); 1193 } 1194 1195 static int bnx2fc_vport_destroy(struct fc_vport *vport) 1196 { 1197 struct Scsi_Host *shost = vport_to_shost(vport); 1198 struct fc_lport *n_port = shost_priv(shost); 1199 struct fc_lport *vn_port = vport->dd_data; 1200 struct fcoe_port *port = lport_priv(vn_port); 1201 struct bnx2fc_interface *interface = port->priv; 1202 struct fc_lport *v_port; 1203 bool found = false; 1204 1205 mutex_lock(&n_port->lp_mutex); 1206 list_for_each_entry(v_port, &n_port->vports, list) 1207 if (v_port->vport == vport) { 1208 found = true; 1209 break; 1210 } 1211 1212 if (!found) { 1213 mutex_unlock(&n_port->lp_mutex); 1214 return -ENOENT; 1215 } 1216 list_del(&vn_port->list); 1217 mutex_unlock(&n_port->lp_mutex); 1218 bnx2fc_free_vport(interface->hba, port->lport); 1219 bnx2fc_port_shutdown(port->lport); 1220 bnx2fc_port_destroy(port); 1221 bnx2fc_interface_put(interface); 1222 return 0; 1223 } 1224 1225 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) 1226 { 1227 struct fc_lport *lport = vport->dd_data; 1228 1229 if (disable) { 1230 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1231 fc_fabric_logoff(lport); 1232 } else { 1233 lport->boot_time = jiffies; 1234 fc_fabric_login(lport); 1235 fc_vport_setlink(lport); 1236 } 1237 return 0; 1238 } 1239 1240 1241 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) 1242 { 1243 struct net_device *netdev = interface->netdev; 1244 struct net_device *physdev = interface->hba->phys_dev; 1245 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1246 struct netdev_hw_addr *ha; 1247 int sel_san_mac = 0; 1248 1249 /* setup Source MAC Address */ 1250 rcu_read_lock(); 1251 for_each_dev_addr(physdev, ha) { 1252 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", 1253 ha->type); 1254 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], 1255 ha->addr[1], ha->addr[2], ha->addr[3], 1256 ha->addr[4], ha->addr[5]); 1257 1258 if ((ha->type == NETDEV_HW_ADDR_T_SAN) && 1259 (is_valid_ether_addr(ha->addr))) { 1260 memcpy(ctlr->ctl_src_addr, ha->addr, 1261 ETH_ALEN); 1262 sel_san_mac = 1; 1263 BNX2FC_MISC_DBG("Found SAN MAC\n"); 1264 } 1265 } 1266 rcu_read_unlock(); 1267 1268 if (!sel_san_mac) 1269 return -ENODEV; 1270 1271 interface->fip_packet_type.func = bnx2fc_fip_recv; 1272 interface->fip_packet_type.type = htons(ETH_P_FIP); 1273 interface->fip_packet_type.dev = netdev; 1274 dev_add_pack(&interface->fip_packet_type); 1275 1276 interface->fcoe_packet_type.func = bnx2fc_rcv; 1277 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); 1278 interface->fcoe_packet_type.dev = netdev; 1279 dev_add_pack(&interface->fcoe_packet_type); 1280 1281 return 0; 1282 } 1283 1284 static int bnx2fc_attach_transport(void) 1285 { 1286 bnx2fc_transport_template = 1287 fc_attach_transport(&bnx2fc_transport_function); 1288 1289 if (bnx2fc_transport_template == NULL) { 1290 printk(KERN_ERR PFX "Failed to attach FC transport\n"); 1291 return -ENODEV; 1292 } 1293 1294 bnx2fc_vport_xport_template = 1295 fc_attach_transport(&bnx2fc_vport_xport_function); 1296 if (bnx2fc_vport_xport_template == NULL) { 1297 printk(KERN_ERR PFX 1298 "Failed to attach FC transport for vport\n"); 1299 fc_release_transport(bnx2fc_transport_template); 1300 bnx2fc_transport_template = NULL; 1301 return -ENODEV; 1302 } 1303 return 0; 1304 } 1305 static void bnx2fc_release_transport(void) 1306 { 1307 fc_release_transport(bnx2fc_transport_template); 1308 fc_release_transport(bnx2fc_vport_xport_template); 1309 bnx2fc_transport_template = NULL; 1310 bnx2fc_vport_xport_template = NULL; 1311 } 1312 1313 static void bnx2fc_interface_release(struct kref *kref) 1314 { 1315 struct fcoe_ctlr_device *ctlr_dev; 1316 struct bnx2fc_interface *interface; 1317 struct fcoe_ctlr *ctlr; 1318 struct net_device *netdev; 1319 1320 interface = container_of(kref, struct bnx2fc_interface, kref); 1321 BNX2FC_MISC_DBG("Interface is being released\n"); 1322 1323 ctlr = bnx2fc_to_ctlr(interface); 1324 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); 1325 netdev = interface->netdev; 1326 1327 /* tear-down FIP controller */ 1328 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) 1329 fcoe_ctlr_destroy(ctlr); 1330 1331 fcoe_ctlr_device_delete(ctlr_dev); 1332 1333 dev_put(netdev); 1334 module_put(THIS_MODULE); 1335 } 1336 1337 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) 1338 { 1339 kref_get(&interface->kref); 1340 } 1341 1342 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) 1343 { 1344 kref_put(&interface->kref, bnx2fc_interface_release); 1345 } 1346 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) 1347 { 1348 /* Free the command manager */ 1349 if (hba->cmd_mgr) { 1350 bnx2fc_cmd_mgr_free(hba->cmd_mgr); 1351 hba->cmd_mgr = NULL; 1352 } 1353 kfree(hba->tgt_ofld_list); 1354 bnx2fc_unbind_pcidev(hba); 1355 kfree(hba); 1356 } 1357 1358 /** 1359 * bnx2fc_hba_create - create a new bnx2fc hba 1360 * 1361 * @cnic: pointer to cnic device 1362 * 1363 * Creates a new FCoE hba on the given device. 1364 * 1365 */ 1366 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) 1367 { 1368 struct bnx2fc_hba *hba; 1369 struct fcoe_capabilities *fcoe_cap; 1370 int rc; 1371 1372 hba = kzalloc(sizeof(*hba), GFP_KERNEL); 1373 if (!hba) { 1374 printk(KERN_ERR PFX "Unable to allocate hba structure\n"); 1375 return NULL; 1376 } 1377 spin_lock_init(&hba->hba_lock); 1378 mutex_init(&hba->hba_mutex); 1379 mutex_init(&hba->hba_stats_mutex); 1380 1381 hba->cnic = cnic; 1382 1383 hba->max_tasks = cnic->max_fcoe_exchanges; 1384 hba->elstm_xids = (hba->max_tasks / 2); 1385 hba->max_outstanding_cmds = hba->elstm_xids; 1386 hba->max_xid = (hba->max_tasks - 1); 1387 1388 rc = bnx2fc_bind_pcidev(hba); 1389 if (rc) { 1390 printk(KERN_ERR PFX "create_adapter: bind error\n"); 1391 goto bind_err; 1392 } 1393 hba->phys_dev = cnic->netdev; 1394 hba->next_conn_id = 0; 1395 1396 hba->tgt_ofld_list = 1397 kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *), 1398 GFP_KERNEL); 1399 if (!hba->tgt_ofld_list) { 1400 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); 1401 goto tgtofld_err; 1402 } 1403 1404 hba->num_ofld_sess = 0; 1405 1406 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba); 1407 if (!hba->cmd_mgr) { 1408 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); 1409 goto cmgr_err; 1410 } 1411 fcoe_cap = &hba->fcoe_cap; 1412 1413 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << 1414 FCOE_IOS_PER_CONNECTION_SHIFT; 1415 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << 1416 FCOE_LOGINS_PER_PORT_SHIFT; 1417 fcoe_cap->capability2 = hba->max_outstanding_cmds << 1418 FCOE_NUMBER_OF_EXCHANGES_SHIFT; 1419 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << 1420 FCOE_NPIV_WWN_PER_PORT_SHIFT; 1421 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << 1422 FCOE_TARGETS_SUPPORTED_SHIFT; 1423 fcoe_cap->capability3 |= hba->max_outstanding_cmds << 1424 FCOE_OUTSTANDING_COMMANDS_SHIFT; 1425 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; 1426 1427 init_waitqueue_head(&hba->shutdown_wait); 1428 init_waitqueue_head(&hba->destroy_wait); 1429 INIT_LIST_HEAD(&hba->vports); 1430 1431 return hba; 1432 1433 cmgr_err: 1434 kfree(hba->tgt_ofld_list); 1435 tgtofld_err: 1436 bnx2fc_unbind_pcidev(hba); 1437 bind_err: 1438 kfree(hba); 1439 return NULL; 1440 } 1441 1442 static struct bnx2fc_interface * 1443 bnx2fc_interface_create(struct bnx2fc_hba *hba, 1444 struct net_device *netdev, 1445 enum fip_mode fip_mode) 1446 { 1447 struct fcoe_ctlr_device *ctlr_dev; 1448 struct bnx2fc_interface *interface; 1449 struct fcoe_ctlr *ctlr; 1450 int size; 1451 int rc = 0; 1452 1453 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); 1454 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, 1455 size); 1456 if (!ctlr_dev) { 1457 printk(KERN_ERR PFX "Unable to allocate interface structure\n"); 1458 return NULL; 1459 } 1460 ctlr = fcoe_ctlr_device_priv(ctlr_dev); 1461 ctlr->cdev = ctlr_dev; 1462 interface = fcoe_ctlr_priv(ctlr); 1463 dev_hold(netdev); 1464 kref_init(&interface->kref); 1465 interface->hba = hba; 1466 interface->netdev = netdev; 1467 1468 /* Initialize FIP */ 1469 fcoe_ctlr_init(ctlr, fip_mode); 1470 ctlr->send = bnx2fc_fip_send; 1471 ctlr->update_mac = bnx2fc_update_src_mac; 1472 ctlr->get_src_addr = bnx2fc_get_src_mac; 1473 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); 1474 1475 rc = bnx2fc_interface_setup(interface); 1476 if (!rc) 1477 return interface; 1478 1479 fcoe_ctlr_destroy(ctlr); 1480 dev_put(netdev); 1481 fcoe_ctlr_device_delete(ctlr_dev); 1482 return NULL; 1483 } 1484 1485 /** 1486 * bnx2fc_if_create - Create FCoE instance on a given interface 1487 * 1488 * @interface: FCoE interface to create a local port on 1489 * @parent: Device pointer to be the parent in sysfs for the SCSI host 1490 * @npiv: Indicates if the port is vport or not 1491 * 1492 * Creates a fc_lport instance and a Scsi_Host instance and configure them. 1493 * 1494 * Returns: Allocated fc_lport or an error pointer 1495 */ 1496 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 1497 struct device *parent, int npiv) 1498 { 1499 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1500 struct fc_lport *lport, *n_port; 1501 struct fcoe_port *port; 1502 struct Scsi_Host *shost; 1503 struct fc_vport *vport = dev_to_vport(parent); 1504 struct bnx2fc_lport *blport; 1505 struct bnx2fc_hba *hba = interface->hba; 1506 int rc = 0; 1507 1508 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); 1509 if (!blport) { 1510 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); 1511 return NULL; 1512 } 1513 1514 /* Allocate Scsi_Host structure */ 1515 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds; 1516 if (!npiv) 1517 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); 1518 else 1519 lport = libfc_vport_create(vport, sizeof(*port)); 1520 1521 if (!lport) { 1522 printk(KERN_ERR PFX "could not allocate scsi host structure\n"); 1523 goto free_blport; 1524 } 1525 shost = lport->host; 1526 port = lport_priv(lport); 1527 port->lport = lport; 1528 port->priv = interface; 1529 port->get_netdev = bnx2fc_netdev; 1530 1531 /* Configure fcoe_port */ 1532 rc = bnx2fc_lport_config(lport); 1533 if (rc) 1534 goto lp_config_err; 1535 1536 if (npiv) { 1537 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", 1538 vport->node_name, vport->port_name); 1539 fc_set_wwnn(lport, vport->node_name); 1540 fc_set_wwpn(lport, vport->port_name); 1541 } 1542 /* Configure netdev and networking properties of the lport */ 1543 rc = bnx2fc_net_config(lport, interface->netdev); 1544 if (rc) { 1545 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); 1546 goto lp_config_err; 1547 } 1548 1549 rc = bnx2fc_shost_config(lport, parent); 1550 if (rc) { 1551 printk(KERN_ERR PFX "Couldn't configure shost for %s\n", 1552 interface->netdev->name); 1553 goto lp_config_err; 1554 } 1555 1556 /* Initialize the libfc library */ 1557 rc = bnx2fc_libfc_config(lport); 1558 if (rc) { 1559 printk(KERN_ERR PFX "Couldn't configure libfc\n"); 1560 goto shost_err; 1561 } 1562 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1563 1564 if (bnx2fc_devloss_tmo) 1565 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo; 1566 1567 /* Allocate exchange manager */ 1568 if (!npiv) 1569 rc = bnx2fc_em_config(lport, hba); 1570 else { 1571 shost = vport_to_shost(vport); 1572 n_port = shost_priv(shost); 1573 rc = fc_exch_mgr_list_clone(n_port, lport); 1574 } 1575 1576 if (rc) { 1577 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); 1578 goto shost_err; 1579 } 1580 1581 bnx2fc_interface_get(interface); 1582 1583 spin_lock_bh(&hba->hba_lock); 1584 blport->lport = lport; 1585 list_add_tail(&blport->list, &hba->vports); 1586 spin_unlock_bh(&hba->hba_lock); 1587 1588 return lport; 1589 1590 shost_err: 1591 scsi_remove_host(shost); 1592 lp_config_err: 1593 scsi_host_put(lport->host); 1594 free_blport: 1595 kfree(blport); 1596 return NULL; 1597 } 1598 1599 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) 1600 { 1601 /* Dont listen for Ethernet packets anymore */ 1602 __dev_remove_pack(&interface->fcoe_packet_type); 1603 __dev_remove_pack(&interface->fip_packet_type); 1604 synchronize_net(); 1605 } 1606 1607 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) 1608 { 1609 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1610 struct fc_lport *lport = ctlr->lp; 1611 struct fcoe_port *port = lport_priv(lport); 1612 struct bnx2fc_hba *hba = interface->hba; 1613 1614 /* Stop the transmit retry timer */ 1615 del_timer_sync(&port->timer); 1616 1617 /* Free existing transmit skbs */ 1618 fcoe_clean_pending_queue(lport); 1619 1620 bnx2fc_net_cleanup(interface); 1621 1622 bnx2fc_free_vport(hba, lport); 1623 } 1624 1625 static void bnx2fc_if_destroy(struct fc_lport *lport) 1626 { 1627 1628 /* Free queued packets for the receive thread */ 1629 bnx2fc_clean_rx_queue(lport); 1630 1631 /* Detach from scsi-ml */ 1632 fc_remove_host(lport->host); 1633 scsi_remove_host(lport->host); 1634 1635 /* 1636 * Note that only the physical lport will have the exchange manager. 1637 * for vports, this function is NOP 1638 */ 1639 fc_exch_mgr_free(lport); 1640 1641 /* Free memory used by statistical counters */ 1642 fc_lport_free_stats(lport); 1643 1644 /* Release Scsi_Host */ 1645 scsi_host_put(lport->host); 1646 } 1647 1648 static void __bnx2fc_destroy(struct bnx2fc_interface *interface) 1649 { 1650 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1651 struct fc_lport *lport = ctlr->lp; 1652 struct fcoe_port *port = lport_priv(lport); 1653 1654 bnx2fc_interface_cleanup(interface); 1655 bnx2fc_stop(interface); 1656 list_del(&interface->list); 1657 bnx2fc_port_destroy(port); 1658 bnx2fc_interface_put(interface); 1659 } 1660 1661 /** 1662 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface 1663 * 1664 * @netdev: The net device that the FCoE interface is on 1665 * 1666 * Called from sysfs. 1667 * 1668 * Returns: 0 for success 1669 */ 1670 static int bnx2fc_destroy(struct net_device *netdev) 1671 { 1672 struct bnx2fc_interface *interface = NULL; 1673 struct workqueue_struct *timer_work_queue; 1674 struct fcoe_ctlr *ctlr; 1675 int rc = 0; 1676 1677 rtnl_lock(); 1678 mutex_lock(&bnx2fc_dev_lock); 1679 1680 interface = bnx2fc_interface_lookup(netdev); 1681 ctlr = bnx2fc_to_ctlr(interface); 1682 if (!interface || !ctlr->lp) { 1683 rc = -ENODEV; 1684 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); 1685 goto netdev_err; 1686 } 1687 1688 timer_work_queue = interface->timer_work_queue; 1689 __bnx2fc_destroy(interface); 1690 destroy_workqueue(timer_work_queue); 1691 1692 netdev_err: 1693 mutex_unlock(&bnx2fc_dev_lock); 1694 rtnl_unlock(); 1695 return rc; 1696 } 1697 1698 static void bnx2fc_port_destroy(struct fcoe_port *port) 1699 { 1700 struct fc_lport *lport; 1701 1702 lport = port->lport; 1703 BNX2FC_HBA_DBG(lport, "Entered %s, destroying lport %p\n", __func__, lport); 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 structure 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) { 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) { 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 bnx2fc_ulp_stop(hba); 2558 /* unregister cnic device */ 2559 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) 2560 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); 2561 bnx2fc_hba_destroy(hba); 2562 } 2563 2564 static void bnx2fc_rport_terminate_io(struct fc_rport *rport) 2565 { 2566 /* This is a no-op */ 2567 } 2568 2569 /** 2570 * bnx2fc_fcoe_reset - Resets the fcoe 2571 * 2572 * @shost: shost the reset is from 2573 * 2574 * Returns: always 0 2575 */ 2576 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) 2577 { 2578 struct fc_lport *lport = shost_priv(shost); 2579 fc_lport_reset(lport); 2580 return 0; 2581 } 2582 2583 2584 static bool bnx2fc_match(struct net_device *netdev) 2585 { 2586 struct net_device *phys_dev = netdev; 2587 2588 mutex_lock(&bnx2fc_dev_lock); 2589 if (is_vlan_dev(netdev)) 2590 phys_dev = vlan_dev_real_dev(netdev); 2591 2592 if (bnx2fc_hba_lookup(phys_dev)) { 2593 mutex_unlock(&bnx2fc_dev_lock); 2594 return true; 2595 } 2596 2597 mutex_unlock(&bnx2fc_dev_lock); 2598 return false; 2599 } 2600 2601 2602 static struct fcoe_transport bnx2fc_transport = { 2603 .name = {"bnx2fc"}, 2604 .attached = false, 2605 .list = LIST_HEAD_INIT(bnx2fc_transport.list), 2606 .alloc = bnx2fc_ctlr_alloc, 2607 .match = bnx2fc_match, 2608 .create = bnx2fc_create, 2609 .destroy = bnx2fc_destroy, 2610 .enable = bnx2fc_enable, 2611 .disable = bnx2fc_disable, 2612 }; 2613 2614 /** 2615 * bnx2fc_cpu_online - Create a receive thread for an online CPU 2616 * 2617 * @cpu: cpu index for the online cpu 2618 */ 2619 static int bnx2fc_cpu_online(unsigned int cpu) 2620 { 2621 struct bnx2fc_percpu_s *p; 2622 struct task_struct *thread; 2623 2624 p = &per_cpu(bnx2fc_percpu, cpu); 2625 2626 thread = kthread_create_on_node(bnx2fc_percpu_io_thread, 2627 (void *)p, cpu_to_node(cpu), 2628 "bnx2fc_thread/%d", cpu); 2629 if (IS_ERR(thread)) 2630 return PTR_ERR(thread); 2631 2632 /* bind thread to the cpu */ 2633 kthread_bind(thread, cpu); 2634 p->iothread = thread; 2635 wake_up_process(thread); 2636 return 0; 2637 } 2638 2639 static int bnx2fc_cpu_offline(unsigned int cpu) 2640 { 2641 struct bnx2fc_percpu_s *p; 2642 struct task_struct *thread; 2643 struct bnx2fc_work *work, *tmp; 2644 2645 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); 2646 2647 /* Prevent any new work from being queued for this CPU */ 2648 p = &per_cpu(bnx2fc_percpu, cpu); 2649 spin_lock_bh(&p->fp_work_lock); 2650 thread = p->iothread; 2651 p->iothread = NULL; 2652 2653 /* Free all work in the list */ 2654 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 2655 list_del_init(&work->list); 2656 bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data, 2657 work->num_rq, work->task); 2658 kfree(work); 2659 } 2660 2661 spin_unlock_bh(&p->fp_work_lock); 2662 2663 if (thread) 2664 kthread_stop(thread); 2665 return 0; 2666 } 2667 2668 static int bnx2fc_slave_configure(struct scsi_device *sdev) 2669 { 2670 if (!bnx2fc_queue_depth) 2671 return 0; 2672 2673 scsi_change_queue_depth(sdev, bnx2fc_queue_depth); 2674 return 0; 2675 } 2676 2677 static enum cpuhp_state bnx2fc_online_state; 2678 2679 /** 2680 * bnx2fc_mod_init - module init entry point 2681 * 2682 * Initialize driver wide global data structures, and register 2683 * with cnic module 2684 **/ 2685 static int __init bnx2fc_mod_init(void) 2686 { 2687 struct fcoe_percpu_s *bg; 2688 struct task_struct *l2_thread; 2689 int rc = 0; 2690 unsigned int cpu = 0; 2691 struct bnx2fc_percpu_s *p; 2692 2693 printk(KERN_INFO PFX "%s", version); 2694 2695 /* register as a fcoe transport */ 2696 rc = fcoe_transport_attach(&bnx2fc_transport); 2697 if (rc) { 2698 printk(KERN_ERR "failed to register an fcoe transport, check " 2699 "if libfcoe is loaded\n"); 2700 goto out; 2701 } 2702 2703 INIT_LIST_HEAD(&adapter_list); 2704 INIT_LIST_HEAD(&if_list); 2705 mutex_init(&bnx2fc_dev_lock); 2706 adapter_count = 0; 2707 2708 /* Attach FC transport template */ 2709 rc = bnx2fc_attach_transport(); 2710 if (rc) 2711 goto detach_ft; 2712 2713 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); 2714 if (!bnx2fc_wq) { 2715 rc = -ENOMEM; 2716 goto release_bt; 2717 } 2718 2719 bg = &bnx2fc_global; 2720 skb_queue_head_init(&bg->fcoe_rx_list); 2721 l2_thread = kthread_create(bnx2fc_l2_rcv_thread, 2722 (void *)bg, 2723 "bnx2fc_l2_thread"); 2724 if (IS_ERR(l2_thread)) { 2725 rc = PTR_ERR(l2_thread); 2726 goto free_wq; 2727 } 2728 wake_up_process(l2_thread); 2729 spin_lock_bh(&bg->fcoe_rx_list.lock); 2730 bg->kthread = l2_thread; 2731 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2732 2733 for_each_possible_cpu(cpu) { 2734 p = &per_cpu(bnx2fc_percpu, cpu); 2735 INIT_LIST_HEAD(&p->work_list); 2736 spin_lock_init(&p->fp_work_lock); 2737 } 2738 2739 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online", 2740 bnx2fc_cpu_online, bnx2fc_cpu_offline); 2741 if (rc < 0) 2742 goto stop_thread; 2743 bnx2fc_online_state = rc; 2744 2745 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); 2746 return 0; 2747 2748 stop_thread: 2749 kthread_stop(l2_thread); 2750 free_wq: 2751 destroy_workqueue(bnx2fc_wq); 2752 release_bt: 2753 bnx2fc_release_transport(); 2754 detach_ft: 2755 fcoe_transport_detach(&bnx2fc_transport); 2756 out: 2757 return rc; 2758 } 2759 2760 static void __exit bnx2fc_mod_exit(void) 2761 { 2762 LIST_HEAD(to_be_deleted); 2763 struct bnx2fc_hba *hba, *next; 2764 struct fcoe_percpu_s *bg; 2765 struct task_struct *l2_thread; 2766 struct sk_buff *skb; 2767 2768 /* 2769 * NOTE: Since cnic calls register_driver routine rtnl_lock, 2770 * it will have higher precedence than bnx2fc_dev_lock. 2771 * unregister_device() cannot be called with bnx2fc_dev_lock 2772 * held. 2773 */ 2774 mutex_lock(&bnx2fc_dev_lock); 2775 list_splice_init(&adapter_list, &to_be_deleted); 2776 adapter_count = 0; 2777 mutex_unlock(&bnx2fc_dev_lock); 2778 2779 /* Unregister with cnic */ 2780 list_for_each_entry_safe(hba, next, &to_be_deleted, list) { 2781 list_del_init(&hba->list); 2782 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", 2783 hba); 2784 bnx2fc_ulp_stop(hba); 2785 /* unregister cnic device */ 2786 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, 2787 &hba->reg_with_cnic)) 2788 hba->cnic->unregister_device(hba->cnic, 2789 CNIC_ULP_FCOE); 2790 bnx2fc_hba_destroy(hba); 2791 } 2792 cnic_unregister_driver(CNIC_ULP_FCOE); 2793 2794 /* Destroy global thread */ 2795 bg = &bnx2fc_global; 2796 spin_lock_bh(&bg->fcoe_rx_list.lock); 2797 l2_thread = bg->kthread; 2798 bg->kthread = NULL; 2799 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) 2800 kfree_skb(skb); 2801 2802 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2803 2804 if (l2_thread) 2805 kthread_stop(l2_thread); 2806 2807 cpuhp_remove_state(bnx2fc_online_state); 2808 2809 destroy_workqueue(bnx2fc_wq); 2810 /* 2811 * detach from scsi transport 2812 * must happen after all destroys are done 2813 */ 2814 bnx2fc_release_transport(); 2815 2816 /* detach from fcoe transport */ 2817 fcoe_transport_detach(&bnx2fc_transport); 2818 } 2819 2820 module_init(bnx2fc_mod_init); 2821 module_exit(bnx2fc_mod_exit); 2822 2823 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { 2824 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, 2825 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, 2826 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, 2827 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, 2828 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, 2829 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, 2830 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, 2831 2832 .get_fcoe_fcf_selected = fcoe_fcf_get_selected, 2833 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, 2834 }; 2835 2836 static struct fc_function_template bnx2fc_transport_function = { 2837 .show_host_node_name = 1, 2838 .show_host_port_name = 1, 2839 .show_host_supported_classes = 1, 2840 .show_host_supported_fc4s = 1, 2841 .show_host_active_fc4s = 1, 2842 .show_host_maxframe_size = 1, 2843 2844 .show_host_port_id = 1, 2845 .show_host_supported_speeds = 1, 2846 .get_host_speed = fc_get_host_speed, 2847 .show_host_speed = 1, 2848 .show_host_port_type = 1, 2849 .get_host_port_state = fc_get_host_port_state, 2850 .show_host_port_state = 1, 2851 .show_host_symbolic_name = 1, 2852 2853 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2854 sizeof(struct bnx2fc_rport)), 2855 .show_rport_maxframe_size = 1, 2856 .show_rport_supported_classes = 1, 2857 2858 .show_host_fabric_name = 1, 2859 .show_starget_node_name = 1, 2860 .show_starget_port_name = 1, 2861 .show_starget_port_id = 1, 2862 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2863 .show_rport_dev_loss_tmo = 1, 2864 .get_fc_host_stats = bnx2fc_get_host_stats, 2865 2866 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2867 2868 .terminate_rport_io = bnx2fc_rport_terminate_io, 2869 2870 .vport_create = bnx2fc_vport_create, 2871 .vport_delete = bnx2fc_vport_destroy, 2872 .vport_disable = bnx2fc_vport_disable, 2873 .bsg_request = fc_lport_bsg_request, 2874 }; 2875 2876 static struct fc_function_template bnx2fc_vport_xport_function = { 2877 .show_host_node_name = 1, 2878 .show_host_port_name = 1, 2879 .show_host_supported_classes = 1, 2880 .show_host_supported_fc4s = 1, 2881 .show_host_active_fc4s = 1, 2882 .show_host_maxframe_size = 1, 2883 2884 .show_host_port_id = 1, 2885 .show_host_supported_speeds = 1, 2886 .get_host_speed = fc_get_host_speed, 2887 .show_host_speed = 1, 2888 .show_host_port_type = 1, 2889 .get_host_port_state = fc_get_host_port_state, 2890 .show_host_port_state = 1, 2891 .show_host_symbolic_name = 1, 2892 2893 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2894 sizeof(struct bnx2fc_rport)), 2895 .show_rport_maxframe_size = 1, 2896 .show_rport_supported_classes = 1, 2897 2898 .show_host_fabric_name = 1, 2899 .show_starget_node_name = 1, 2900 .show_starget_port_name = 1, 2901 .show_starget_port_id = 1, 2902 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2903 .show_rport_dev_loss_tmo = 1, 2904 .get_fc_host_stats = fc_get_host_stats, 2905 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2906 .terminate_rport_io = fc_rport_terminate_io, 2907 .bsg_request = fc_lport_bsg_request, 2908 }; 2909 2910 /* 2911 * Additional scsi_host attributes. 2912 */ 2913 static ssize_t 2914 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr, 2915 char *buf) 2916 { 2917 struct Scsi_Host *shost = class_to_shost(dev); 2918 struct fc_lport *lport = shost_priv(shost); 2919 struct fcoe_port *port = lport_priv(lport); 2920 struct bnx2fc_interface *interface = port->priv; 2921 2922 sprintf(buf, "%u\n", interface->tm_timeout); 2923 return strlen(buf); 2924 } 2925 2926 static ssize_t 2927 bnx2fc_tm_timeout_store(struct device *dev, 2928 struct device_attribute *attr, const char *buf, size_t count) 2929 { 2930 struct Scsi_Host *shost = class_to_shost(dev); 2931 struct fc_lport *lport = shost_priv(shost); 2932 struct fcoe_port *port = lport_priv(lport); 2933 struct bnx2fc_interface *interface = port->priv; 2934 int rval, val; 2935 2936 rval = kstrtouint(buf, 10, &val); 2937 if (rval) 2938 return rval; 2939 if (val > 255) 2940 return -ERANGE; 2941 2942 interface->tm_timeout = (u8)val; 2943 return strlen(buf); 2944 } 2945 2946 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show, 2947 bnx2fc_tm_timeout_store); 2948 2949 static struct attribute *bnx2fc_host_attrs[] = { 2950 &dev_attr_tm_timeout.attr, 2951 NULL, 2952 }; 2953 2954 ATTRIBUTE_GROUPS(bnx2fc_host); 2955 2956 /* 2957 * scsi_host_template structure used while registering with SCSI-ml 2958 */ 2959 static struct scsi_host_template bnx2fc_shost_template = { 2960 .module = THIS_MODULE, 2961 .name = "QLogic Offload FCoE Initiator", 2962 .queuecommand = bnx2fc_queuecommand, 2963 .eh_timed_out = fc_eh_timed_out, 2964 .eh_abort_handler = bnx2fc_eh_abort, /* abts */ 2965 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ 2966 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ 2967 .eh_host_reset_handler = fc_eh_host_reset, 2968 .slave_alloc = fc_slave_alloc, 2969 .change_queue_depth = scsi_change_queue_depth, 2970 .this_id = -1, 2971 .cmd_per_lun = 3, 2972 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, 2973 .dma_boundary = 0x7fff, 2974 .max_sectors = 0x3fbf, 2975 .track_queue_depth = 1, 2976 .slave_configure = bnx2fc_slave_configure, 2977 .shost_groups = bnx2fc_host_groups, 2978 }; 2979 2980 static struct libfc_function_template bnx2fc_libfc_fcn_templ = { 2981 .frame_send = bnx2fc_xmit, 2982 .elsct_send = bnx2fc_elsct_send, 2983 .fcp_abort_io = bnx2fc_abort_io, 2984 .fcp_cleanup = bnx2fc_cleanup, 2985 .get_lesb = fcoe_get_lesb, 2986 .rport_event_callback = bnx2fc_rport_event_handler, 2987 }; 2988 2989 /* 2990 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface 2991 * structure carrying callback function pointers 2992 */ 2993 static struct cnic_ulp_ops bnx2fc_cnic_cb = { 2994 .owner = THIS_MODULE, 2995 .cnic_init = bnx2fc_ulp_init, 2996 .cnic_exit = bnx2fc_ulp_exit, 2997 .cnic_start = bnx2fc_ulp_start, 2998 .cnic_stop = bnx2fc_ulp_stop, 2999 .indicate_kcqes = bnx2fc_indicate_kcqe, 3000 .indicate_netevent = bnx2fc_indicate_netevent, 3001 .cnic_get_stats = bnx2fc_ulp_get_stats, 3002 }; 3003