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 21static struct list_head adapter_list; 22static struct list_head if_list; 23static u32 adapter_count; 24static DEFINE_MUTEX(bnx2fc_dev_lock); 25DEFINE_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 32static char version[] = 33 "QLogic FCoE Driver " DRV_MODULE_NAME \ 34 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; 35 36 37MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>"); 38MODULE_DESCRIPTION("QLogic FCoE Driver"); 39MODULE_LICENSE("GPL"); 40MODULE_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 46static struct scsi_transport_template *bnx2fc_transport_template; 47static struct scsi_transport_template *bnx2fc_vport_xport_template; 48 49struct 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 */ 54struct fcoe_percpu_s bnx2fc_global; 55static DEFINE_SPINLOCK(bnx2fc_global_lock); 56 57static struct cnic_ulp_ops bnx2fc_cnic_cb; 58static struct libfc_function_template bnx2fc_libfc_fcn_templ; 59static struct scsi_host_template bnx2fc_shost_template; 60static struct fc_function_template bnx2fc_transport_function; 61static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ; 62static struct fc_function_template bnx2fc_vport_xport_function; 63static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode); 64static void __bnx2fc_destroy(struct bnx2fc_interface *interface); 65static int bnx2fc_destroy(struct net_device *net_device); 66static int bnx2fc_enable(struct net_device *netdev); 67static int bnx2fc_disable(struct net_device *netdev); 68 69/* fcoe_syfs control interface handlers */ 70static int bnx2fc_ctlr_alloc(struct net_device *netdev); 71static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev); 72 73static void bnx2fc_recv_frame(struct sk_buff *skb); 74 75static void bnx2fc_start_disc(struct bnx2fc_interface *interface); 76static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev); 77static int bnx2fc_lport_config(struct fc_lport *lport); 78static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba); 79static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba); 80static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba); 81static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba); 82static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba); 83static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 84 struct device *parent, int npiv); 85static void bnx2fc_port_destroy(struct fcoe_port *port); 86 87static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev); 88static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 89 *phys_dev); 90static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface); 91static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic); 92 93static int bnx2fc_fw_init(struct bnx2fc_hba *hba); 94static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba); 95 96static void bnx2fc_port_shutdown(struct fc_lport *lport); 97static void bnx2fc_stop(struct bnx2fc_interface *interface); 98static int __init bnx2fc_mod_init(void); 99static void __exit bnx2fc_mod_exit(void); 100 101unsigned int bnx2fc_debug_level; 102module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR); 103MODULE_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 113static uint bnx2fc_devloss_tmo; 114module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO); 115MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports " 116 "attached via bnx2fc."); 117 118static uint bnx2fc_max_luns = BNX2FC_MAX_LUN; 119module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO); 120MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default " 121 "0xffff."); 122 123static uint bnx2fc_queue_depth; 124module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO); 125MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices " 126 "attached via bnx2fc."); 127 128static uint bnx2fc_log_fka; 129module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR); 130MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is " 131 "initiating a FIP keep alive when debug logging is enabled."); 132 133static 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 139static 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 149static 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 169int 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 179static 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 189static 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 216static 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 */ 264static 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 u8 sof, eof; 277 u32 crc; 278 unsigned int hlen, tlen, elen; 279 int wlen, rc = 0; 280 281 port = (struct fcoe_port *)lport_priv(lport); 282 interface = port->priv; 283 ctlr = bnx2fc_to_ctlr(interface); 284 hba = interface->hba; 285 286 fh = fc_frame_header_get(fp); 287 288 skb = fp_skb(fp); 289 if (!lport->link_up) { 290 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n"); 291 kfree_skb(skb); 292 return 0; 293 } 294 295 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 296 if (!ctlr->sel_fcf) { 297 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n"); 298 kfree_skb(skb); 299 return -EINVAL; 300 } 301 if (fcoe_ctlr_els_send(ctlr, lport, skb)) 302 return 0; 303 } 304 305 sof = fr_sof(fp); 306 eof = fr_eof(fp); 307 308 /* 309 * Snoop the frame header to check if the frame is for 310 * an offloaded session 311 */ 312 /* 313 * tgt_ofld_list access is synchronized using 314 * both hba mutex and hba lock. Atleast hba mutex or 315 * hba lock needs to be held for read access. 316 */ 317 318 spin_lock_bh(&hba->hba_lock); 319 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id)); 320 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) { 321 /* This frame is for offloaded session */ 322 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session " 323 "port_id = 0x%x\n", ntoh24(fh->fh_d_id)); 324 spin_unlock_bh(&hba->hba_lock); 325 rc = bnx2fc_xmit_l2_frame(tgt, fp); 326 if (rc != -ENODEV) { 327 kfree_skb(skb); 328 return rc; 329 } 330 } else { 331 spin_unlock_bh(&hba->hba_lock); 332 } 333 334 elen = sizeof(struct ethhdr); 335 hlen = sizeof(struct fcoe_hdr); 336 tlen = sizeof(struct fcoe_crc_eof); 337 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 338 339 skb->ip_summed = CHECKSUM_NONE; 340 crc = fcoe_fc_crc(fp); 341 342 /* copy port crc and eof to the skb buff */ 343 if (skb_is_nonlinear(skb)) { 344 skb_frag_t *frag; 345 if (bnx2fc_get_paged_crc_eof(skb, tlen)) { 346 kfree_skb(skb); 347 return -ENOMEM; 348 } 349 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 350 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag); 351 } else { 352 cp = skb_put(skb, tlen); 353 } 354 355 memset(cp, 0, sizeof(*cp)); 356 cp->fcoe_eof = eof; 357 cp->fcoe_crc32 = cpu_to_le32(~crc); 358 if (skb_is_nonlinear(skb)) { 359 kunmap_atomic(cp); 360 cp = NULL; 361 } 362 363 /* adjust skb network/transport offsets to match mac/fcoe/port */ 364 skb_push(skb, elen + hlen); 365 skb_reset_mac_header(skb); 366 skb_reset_network_header(skb); 367 skb->mac_len = elen; 368 skb->protocol = htons(ETH_P_FCOE); 369 skb->dev = interface->netdev; 370 371 /* fill up mac and fcoe headers */ 372 eh = eth_hdr(skb); 373 eh->h_proto = htons(ETH_P_FCOE); 374 if (ctlr->map_dest) 375 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 376 else 377 /* insert GW address */ 378 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); 379 380 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) 381 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); 382 else 383 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); 384 385 hp = (struct fcoe_hdr *)(eh + 1); 386 memset(hp, 0, sizeof(*hp)); 387 if (FC_FCOE_VER) 388 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 389 hp->fcoe_sof = sof; 390 391 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ 392 if (lport->seq_offload && fr_max_payload(fp)) { 393 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; 394 skb_shinfo(skb)->gso_size = fr_max_payload(fp); 395 } else { 396 skb_shinfo(skb)->gso_type = 0; 397 skb_shinfo(skb)->gso_size = 0; 398 } 399 400 /*update tx stats */ 401 this_cpu_inc(lport->stats->TxFrames); 402 this_cpu_add(lport->stats->TxWords, wlen); 403 404 /* send down to lld */ 405 fr_dev(fp) = lport; 406 if (port->fcoe_pending_queue.qlen) 407 fcoe_check_wait_queue(lport, skb); 408 else if (fcoe_start_io(skb)) 409 fcoe_check_wait_queue(lport, skb); 410 411 return 0; 412} 413 414/** 415 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ 416 * 417 * @skb: the receive socket buffer 418 * @dev: associated net device 419 * @ptype: context 420 * @olddev: last device 421 * 422 * This function receives the packet and builds FC frame and passes it up 423 */ 424static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev, 425 struct packet_type *ptype, struct net_device *olddev) 426{ 427 struct fc_lport *lport; 428 struct bnx2fc_interface *interface; 429 struct fcoe_ctlr *ctlr; 430 struct fcoe_rcv_info *fr; 431 struct fcoe_percpu_s *bg; 432 433 interface = container_of(ptype, struct bnx2fc_interface, 434 fcoe_packet_type); 435 ctlr = bnx2fc_to_ctlr(interface); 436 lport = ctlr->lp; 437 438 if (unlikely(lport == NULL)) { 439 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n"); 440 goto err; 441 } 442 443 skb = skb_share_check(skb, GFP_ATOMIC); 444 if (!skb) 445 return -1; 446 447 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { 448 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n"); 449 goto err; 450 } 451 452 /* 453 * Check for minimum frame length, and make sure required FCoE 454 * and FC headers are pulled into the linear data area. 455 */ 456 if (unlikely((skb->len < FCOE_MIN_FRAME) || 457 !pskb_may_pull(skb, FCOE_HEADER_LEN))) 458 goto err; 459 460 skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); 461 462 fr = fcoe_dev_from_skb(skb); 463 fr->fr_dev = lport; 464 465 bg = &bnx2fc_global; 466 spin_lock(&bg->fcoe_rx_list.lock); 467 468 __skb_queue_tail(&bg->fcoe_rx_list, skb); 469 if (bg->fcoe_rx_list.qlen == 1) 470 wake_up_process(bg->kthread); 471 472 spin_unlock(&bg->fcoe_rx_list.lock); 473 474 return 0; 475err: 476 kfree_skb(skb); 477 return -1; 478} 479 480static int bnx2fc_l2_rcv_thread(void *arg) 481{ 482 struct fcoe_percpu_s *bg = arg; 483 struct sk_buff *skb; 484 485 set_user_nice(current, MIN_NICE); 486 set_current_state(TASK_INTERRUPTIBLE); 487 while (!kthread_should_stop()) { 488 schedule(); 489 spin_lock_bh(&bg->fcoe_rx_list.lock); 490 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { 491 spin_unlock_bh(&bg->fcoe_rx_list.lock); 492 bnx2fc_recv_frame(skb); 493 spin_lock_bh(&bg->fcoe_rx_list.lock); 494 } 495 __set_current_state(TASK_INTERRUPTIBLE); 496 spin_unlock_bh(&bg->fcoe_rx_list.lock); 497 } 498 __set_current_state(TASK_RUNNING); 499 return 0; 500} 501 502 503static void bnx2fc_recv_frame(struct sk_buff *skb) 504{ 505 u64 crc_err; 506 u32 fr_len, fr_crc; 507 struct fc_lport *lport; 508 struct fcoe_rcv_info *fr; 509 struct fc_frame_header *fh; 510 struct fcoe_crc_eof crc_eof; 511 struct fc_frame *fp; 512 struct fc_lport *vn_port; 513 struct fcoe_port *port, *phys_port; 514 u8 *mac = NULL; 515 u8 *dest_mac = NULL; 516 struct fcoe_hdr *hp; 517 struct bnx2fc_interface *interface; 518 struct fcoe_ctlr *ctlr; 519 520 fr = fcoe_dev_from_skb(skb); 521 lport = fr->fr_dev; 522 if (unlikely(lport == NULL)) { 523 printk(KERN_ERR PFX "Invalid lport struct\n"); 524 kfree_skb(skb); 525 return; 526 } 527 528 if (skb_is_nonlinear(skb)) 529 skb_linearize(skb); 530 mac = eth_hdr(skb)->h_source; 531 dest_mac = eth_hdr(skb)->h_dest; 532 533 /* Pull the header */ 534 hp = (struct fcoe_hdr *) skb_network_header(skb); 535 fh = (struct fc_frame_header *) skb_transport_header(skb); 536 skb_pull(skb, sizeof(struct fcoe_hdr)); 537 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 538 539 this_cpu_inc(lport->stats->RxFrames); 540 this_cpu_add(lport->stats->RxWords, fr_len / FCOE_WORD_TO_BYTE); 541 542 fp = (struct fc_frame *)skb; 543 fc_frame_init(fp); 544 fr_dev(fp) = lport; 545 fr_sof(fp) = hp->fcoe_sof; 546 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 547 kfree_skb(skb); 548 return; 549 } 550 fr_eof(fp) = crc_eof.fcoe_eof; 551 fr_crc(fp) = crc_eof.fcoe_crc32; 552 if (pskb_trim(skb, fr_len)) { 553 kfree_skb(skb); 554 return; 555 } 556 557 phys_port = lport_priv(lport); 558 interface = phys_port->priv; 559 ctlr = bnx2fc_to_ctlr(interface); 560 561 fh = fc_frame_header_get(fp); 562 563 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 564 BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n", 565 dest_mac); 566 kfree_skb(skb); 567 return; 568 } 569 570 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 571 if (vn_port) { 572 port = lport_priv(vn_port); 573 if (!ether_addr_equal(port->data_src_addr, dest_mac)) { 574 BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); 575 kfree_skb(skb); 576 return; 577 } 578 } 579 if (ctlr->state) { 580 if (!ether_addr_equal(mac, ctlr->dest_addr)) { 581 BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n", 582 mac, ctlr->dest_addr); 583 kfree_skb(skb); 584 return; 585 } 586 } 587 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 588 fh->fh_type == FC_TYPE_FCP) { 589 /* Drop FCP data. We dont this in L2 path */ 590 kfree_skb(skb); 591 return; 592 } 593 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 594 fh->fh_type == FC_TYPE_ELS) { 595 switch (fc_frame_payload_op(fp)) { 596 case ELS_LOGO: 597 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 598 /* drop non-FIP LOGO */ 599 kfree_skb(skb); 600 return; 601 } 602 break; 603 } 604 } 605 606 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 607 /* Drop incoming ABTS */ 608 kfree_skb(skb); 609 return; 610 } 611 612 /* 613 * If the destination ID from the frame header does not match what we 614 * have on record for lport and the search for a NPIV port came up 615 * empty then this is not addressed to our port so simply drop it. 616 */ 617 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 618 BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", 619 lport->port_id, ntoh24(fh->fh_d_id)); 620 kfree_skb(skb); 621 return; 622 } 623 624 fr_crc = le32_to_cpu(fr_crc(fp)); 625 626 if (unlikely(fr_crc != ~crc32(~0, skb->data, fr_len))) { 627 crc_err = this_cpu_inc_return(lport->stats->InvalidCRCCount); 628 if (crc_err < 5) 629 printk(KERN_WARNING PFX "dropping frame with " 630 "CRC error\n"); 631 kfree_skb(skb); 632 return; 633 } 634 fc_exch_recv(lport, fp); 635} 636 637/** 638 * bnx2fc_percpu_io_thread - thread per cpu for ios 639 * 640 * @arg: ptr to bnx2fc_percpu_info structure 641 */ 642static int bnx2fc_percpu_io_thread(void *arg) 643{ 644 struct bnx2fc_percpu_s *p = arg; 645 struct bnx2fc_work *work, *tmp; 646 LIST_HEAD(work_list); 647 648 set_user_nice(current, MIN_NICE); 649 set_current_state(TASK_INTERRUPTIBLE); 650 while (!kthread_should_stop()) { 651 schedule(); 652 spin_lock_bh(&p->fp_work_lock); 653 while (!list_empty(&p->work_list)) { 654 list_splice_init(&p->work_list, &work_list); 655 spin_unlock_bh(&p->fp_work_lock); 656 657 list_for_each_entry_safe(work, tmp, &work_list, list) { 658 list_del_init(&work->list); 659 bnx2fc_process_cq_compl(work->tgt, work->wqe, 660 work->rq_data, 661 work->num_rq, 662 work->task); 663 kfree(work); 664 } 665 666 spin_lock_bh(&p->fp_work_lock); 667 } 668 __set_current_state(TASK_INTERRUPTIBLE); 669 spin_unlock_bh(&p->fp_work_lock); 670 } 671 __set_current_state(TASK_RUNNING); 672 673 return 0; 674} 675 676static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) 677{ 678 struct fc_host_statistics *bnx2fc_stats; 679 struct fc_lport *lport = shost_priv(shost); 680 struct fcoe_port *port = lport_priv(lport); 681 struct bnx2fc_interface *interface = port->priv; 682 struct bnx2fc_hba *hba = interface->hba; 683 struct fcoe_statistics_params *fw_stats; 684 int rc = 0; 685 686 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; 687 if (!fw_stats) 688 return NULL; 689 690 mutex_lock(&hba->hba_stats_mutex); 691 692 bnx2fc_stats = fc_get_host_stats(shost); 693 694 init_completion(&hba->stat_req_done); 695 if (bnx2fc_send_stat_req(hba)) 696 goto unlock_stats_mutex; 697 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); 698 if (!rc) { 699 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); 700 goto unlock_stats_mutex; 701 } 702 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); 703 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; 704 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); 705 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; 706 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); 707 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); 708 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); 709 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; 710 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); 711 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); 712 713 bnx2fc_stats->dumped_frames = 0; 714 bnx2fc_stats->lip_count = 0; 715 bnx2fc_stats->nos_count = 0; 716 bnx2fc_stats->loss_of_sync_count = 0; 717 bnx2fc_stats->loss_of_signal_count = 0; 718 bnx2fc_stats->prim_seq_protocol_err_count = 0; 719 720 memcpy(&hba->prev_stats, hba->stats_buffer, 721 sizeof(struct fcoe_statistics_params)); 722 723unlock_stats_mutex: 724 mutex_unlock(&hba->hba_stats_mutex); 725 return bnx2fc_stats; 726} 727 728static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) 729{ 730 struct fcoe_port *port = lport_priv(lport); 731 struct bnx2fc_interface *interface = port->priv; 732 struct bnx2fc_hba *hba = interface->hba; 733 struct Scsi_Host *shost = lport->host; 734 int rc = 0; 735 736 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; 737 shost->max_lun = bnx2fc_max_luns; 738 shost->max_id = BNX2FC_MAX_FCP_TGT; 739 shost->max_channel = 0; 740 if (lport->vport) 741 shost->transportt = bnx2fc_vport_xport_template; 742 else 743 shost->transportt = bnx2fc_transport_template; 744 745 /* Add the new host to SCSI-ml */ 746 rc = scsi_add_host(lport->host, dev); 747 if (rc) { 748 printk(KERN_ERR PFX "Error on scsi_add_host\n"); 749 return rc; 750 } 751 if (!lport->vport) 752 fc_host_max_npiv_vports(lport->host) = USHRT_MAX; 753 snprintf(fc_host_symbolic_name(lport->host), 256, 754 "%s (QLogic %s) v%s over %s", 755 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION, 756 interface->netdev->name); 757 758 return 0; 759} 760 761static int bnx2fc_link_ok(struct fc_lport *lport) 762{ 763 struct fcoe_port *port = lport_priv(lport); 764 struct bnx2fc_interface *interface = port->priv; 765 struct bnx2fc_hba *hba = interface->hba; 766 struct net_device *dev = hba->phys_dev; 767 int rc = 0; 768 769 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) 770 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 771 else { 772 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 773 rc = -1; 774 } 775 return rc; 776} 777 778/** 779 * bnx2fc_get_link_state - get network link state 780 * 781 * @hba: adapter instance pointer 782 * 783 * updates adapter structure flag based on netdev state 784 */ 785void bnx2fc_get_link_state(struct bnx2fc_hba *hba) 786{ 787 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) 788 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 789 else 790 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 791} 792 793static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) 794{ 795 struct bnx2fc_hba *hba; 796 struct bnx2fc_interface *interface; 797 struct fcoe_ctlr *ctlr; 798 struct fcoe_port *port; 799 u64 wwnn, wwpn; 800 801 port = lport_priv(lport); 802 interface = port->priv; 803 ctlr = bnx2fc_to_ctlr(interface); 804 hba = interface->hba; 805 806 /* require support for get_pauseparam ethtool op. */ 807 if (!hba->phys_dev->ethtool_ops || 808 !hba->phys_dev->ethtool_ops->get_pauseparam) 809 return -EOPNOTSUPP; 810 811 if (fc_set_mfs(lport, BNX2FC_MFS)) 812 return -EINVAL; 813 814 skb_queue_head_init(&port->fcoe_pending_queue); 815 port->fcoe_pending_queue_active = 0; 816 timer_setup(&port->timer, fcoe_queue_timer, 0); 817 818 fcoe_link_speed_update(lport); 819 820 if (!lport->vport) { 821 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) 822 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 823 1, 0); 824 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); 825 fc_set_wwnn(lport, wwnn); 826 827 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) 828 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 829 2, 0); 830 831 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); 832 fc_set_wwpn(lport, wwpn); 833 } 834 835 return 0; 836} 837 838static void bnx2fc_destroy_timer(struct timer_list *t) 839{ 840 struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer); 841 842 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " 843 "Destroy compl not received!!\n"); 844 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 845 wake_up_interruptible(&hba->destroy_wait); 846} 847 848/** 849 * bnx2fc_indicate_netevent - Generic netdev event handler 850 * 851 * @context: adapter structure pointer 852 * @event: event type 853 * @vlan_id: vlan id - associated vlan id with this event 854 * 855 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and 856 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. 857 */ 858static void bnx2fc_indicate_netevent(void *context, unsigned long event, 859 u16 vlan_id) 860{ 861 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; 862 struct fcoe_ctlr_device *cdev; 863 struct fc_lport *lport; 864 struct fc_lport *vport; 865 struct bnx2fc_interface *interface, *tmp; 866 struct fcoe_ctlr *ctlr; 867 int wait_for_upload = 0; 868 u32 link_possible = 1; 869 870 if (vlan_id != 0 && event != NETDEV_UNREGISTER) 871 return; 872 873 switch (event) { 874 case NETDEV_UP: 875 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 876 printk(KERN_ERR "indicate_netevent: "\ 877 "hba is not UP!!\n"); 878 break; 879 880 case NETDEV_DOWN: 881 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 882 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 883 link_possible = 0; 884 break; 885 886 case NETDEV_GOING_DOWN: 887 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 888 link_possible = 0; 889 break; 890 891 case NETDEV_CHANGE: 892 break; 893 894 case NETDEV_UNREGISTER: 895 if (!vlan_id) 896 return; 897 mutex_lock(&bnx2fc_dev_lock); 898 list_for_each_entry_safe(interface, tmp, &if_list, list) { 899 if (interface->hba == hba && 900 interface->vlan_id == (vlan_id & VLAN_VID_MASK)) 901 __bnx2fc_destroy(interface); 902 } 903 mutex_unlock(&bnx2fc_dev_lock); 904 return; 905 906 default: 907 return; 908 } 909 910 mutex_lock(&bnx2fc_dev_lock); 911 list_for_each_entry(interface, &if_list, list) { 912 913 if (interface->hba != hba) 914 continue; 915 916 ctlr = bnx2fc_to_ctlr(interface); 917 lport = ctlr->lp; 918 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", 919 interface->netdev->name, event); 920 921 fcoe_link_speed_update(lport); 922 923 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 924 925 if (link_possible && !bnx2fc_link_ok(lport)) { 926 switch (cdev->enabled) { 927 case FCOE_CTLR_DISABLED: 928 pr_info("Link up while interface is disabled.\n"); 929 break; 930 case FCOE_CTLR_ENABLED: 931 case FCOE_CTLR_UNUSED: 932 /* Reset max recv frame size to default */ 933 fc_set_mfs(lport, BNX2FC_MFS); 934 /* 935 * ctlr link up will only be handled during 936 * enable to avoid sending discovery 937 * solicitation on a stale vlan 938 */ 939 if (interface->enabled) 940 fcoe_ctlr_link_up(ctlr); 941 } 942 } else if (fcoe_ctlr_link_down(ctlr)) { 943 switch (cdev->enabled) { 944 case FCOE_CTLR_DISABLED: 945 pr_info("Link down while interface is disabled.\n"); 946 break; 947 case FCOE_CTLR_ENABLED: 948 case FCOE_CTLR_UNUSED: 949 mutex_lock(&lport->lp_mutex); 950 list_for_each_entry(vport, &lport->vports, list) 951 fc_host_port_type(vport->host) = 952 FC_PORTTYPE_UNKNOWN; 953 mutex_unlock(&lport->lp_mutex); 954 fc_host_port_type(lport->host) = 955 FC_PORTTYPE_UNKNOWN; 956 this_cpu_inc(lport->stats->LinkFailureCount); 957 fcoe_clean_pending_queue(lport); 958 wait_for_upload = 1; 959 } 960 } 961 } 962 mutex_unlock(&bnx2fc_dev_lock); 963 964 if (wait_for_upload) { 965 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 966 init_waitqueue_head(&hba->shutdown_wait); 967 BNX2FC_MISC_DBG("indicate_netevent " 968 "num_ofld_sess = %d\n", 969 hba->num_ofld_sess); 970 hba->wait_for_link_down = 1; 971 wait_event_interruptible(hba->shutdown_wait, 972 (hba->num_ofld_sess == 0)); 973 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", 974 hba->num_ofld_sess); 975 hba->wait_for_link_down = 0; 976 977 if (signal_pending(current)) 978 flush_signals(current); 979 } 980} 981 982static int bnx2fc_libfc_config(struct fc_lport *lport) 983{ 984 985 /* Set the function pointers set by bnx2fc driver */ 986 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, 987 sizeof(struct libfc_function_template)); 988 fc_elsct_init(lport); 989 fc_exch_init(lport); 990 fc_disc_init(lport); 991 fc_disc_config(lport, lport); 992 return 0; 993} 994 995static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba) 996{ 997 int fcoe_min_xid, fcoe_max_xid; 998 999 fcoe_min_xid = hba->max_xid + 1; 1000 if (nr_cpu_ids <= 2) 1001 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET; 1002 else 1003 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET; 1004 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid, 1005 fcoe_max_xid, NULL)) { 1006 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); 1007 return -ENOMEM; 1008 } 1009 1010 return 0; 1011} 1012 1013static int bnx2fc_lport_config(struct fc_lport *lport) 1014{ 1015 lport->link_up = 0; 1016 lport->qfull = 0; 1017 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; 1018 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; 1019 lport->e_d_tov = 2 * 1000; 1020 lport->r_a_tov = 10 * 1000; 1021 1022 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1023 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1024 lport->does_npiv = 1; 1025 1026 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); 1027 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; 1028 1029 /* alloc stats structure */ 1030 if (fc_lport_init_stats(lport)) 1031 return -ENOMEM; 1032 1033 /* Finish fc_lport configuration */ 1034 fc_lport_config(lport); 1035 1036 return 0; 1037} 1038 1039/** 1040 * bnx2fc_fip_recv - handle a received FIP frame. 1041 * 1042 * @skb: the received skb 1043 * @dev: associated &net_device 1044 * @ptype: the &packet_type structure which was used to register this handler. 1045 * @orig_dev: original receive &net_device, in case @ dev is a bond. 1046 * 1047 * Returns: 0 for success 1048 */ 1049static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, 1050 struct packet_type *ptype, 1051 struct net_device *orig_dev) 1052{ 1053 struct bnx2fc_interface *interface; 1054 struct fcoe_ctlr *ctlr; 1055 interface = container_of(ptype, struct bnx2fc_interface, 1056 fip_packet_type); 1057 ctlr = bnx2fc_to_ctlr(interface); 1058 fcoe_ctlr_recv(ctlr, skb); 1059 return 0; 1060} 1061 1062/** 1063 * bnx2fc_update_src_mac - Update Ethernet MAC filters. 1064 * 1065 * @lport: The local port 1066 * @addr: Location of data to copy 1067 * 1068 * Remove any previously-set unicast MAC filter. 1069 * Add secondary FCoE MAC address filter for our OUI. 1070 */ 1071static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) 1072{ 1073 struct fcoe_port *port = lport_priv(lport); 1074 1075 memcpy(port->data_src_addr, addr, ETH_ALEN); 1076} 1077 1078/** 1079 * bnx2fc_get_src_mac - return the ethernet source address for an lport 1080 * 1081 * @lport: libfc port 1082 */ 1083static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) 1084{ 1085 struct fcoe_port *port; 1086 1087 port = (struct fcoe_port *)lport_priv(lport); 1088 return port->data_src_addr; 1089} 1090 1091/** 1092 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. 1093 * 1094 * @fip: FCoE controller. 1095 * @skb: FIP Packet. 1096 */ 1097static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 1098{ 1099 struct fip_header *fiph; 1100 struct ethhdr *eth_hdr; 1101 u16 op; 1102 u8 sub; 1103 1104 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); 1105 eth_hdr = (struct ethhdr *)skb_mac_header(skb); 1106 op = ntohs(fiph->fip_op); 1107 sub = fiph->fip_subcode; 1108 1109 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka) 1110 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n", 1111 eth_hdr->h_source, eth_hdr->h_dest); 1112 1113 skb->dev = bnx2fc_from_ctlr(fip)->netdev; 1114 dev_queue_xmit(skb); 1115} 1116 1117static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) 1118{ 1119 struct Scsi_Host *shost = vport_to_shost(vport); 1120 struct fc_lport *n_port = shost_priv(shost); 1121 struct fcoe_port *port = lport_priv(n_port); 1122 struct bnx2fc_interface *interface = port->priv; 1123 struct net_device *netdev = interface->netdev; 1124 struct fc_lport *vn_port; 1125 int rc; 1126 char buf[32]; 1127 1128 rc = fcoe_validate_vport_create(vport); 1129 if (rc) { 1130 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1131 printk(KERN_ERR PFX "Failed to create vport, " 1132 "WWPN (0x%s) already exists\n", 1133 buf); 1134 return rc; 1135 } 1136 1137 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1138 printk(KERN_ERR PFX "vn ports cannot be created on" 1139 "this interface\n"); 1140 return -EIO; 1141 } 1142 rtnl_lock(); 1143 mutex_lock(&bnx2fc_dev_lock); 1144 vn_port = bnx2fc_if_create(interface, &vport->dev, 1); 1145 mutex_unlock(&bnx2fc_dev_lock); 1146 rtnl_unlock(); 1147 1148 if (!vn_port) { 1149 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", 1150 netdev->name); 1151 return -EIO; 1152 } 1153 1154 if (bnx2fc_devloss_tmo) 1155 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo; 1156 1157 if (disabled) { 1158 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1159 } else { 1160 vn_port->boot_time = jiffies; 1161 fc_lport_init(vn_port); 1162 fc_fabric_login(vn_port); 1163 fc_vport_setlink(vn_port); 1164 } 1165 return 0; 1166} 1167 1168static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) 1169{ 1170 struct bnx2fc_lport *blport, *tmp; 1171 1172 spin_lock_bh(&hba->hba_lock); 1173 list_for_each_entry_safe(blport, tmp, &hba->vports, list) { 1174 if (blport->lport == lport) { 1175 list_del(&blport->list); 1176 kfree(blport); 1177 } 1178 } 1179 spin_unlock_bh(&hba->hba_lock); 1180} 1181 1182static int bnx2fc_vport_destroy(struct fc_vport *vport) 1183{ 1184 struct Scsi_Host *shost = vport_to_shost(vport); 1185 struct fc_lport *n_port = shost_priv(shost); 1186 struct fc_lport *vn_port = vport->dd_data; 1187 struct fcoe_port *port = lport_priv(vn_port); 1188 struct bnx2fc_interface *interface = port->priv; 1189 struct fc_lport *v_port; 1190 bool found = false; 1191 1192 mutex_lock(&n_port->lp_mutex); 1193 list_for_each_entry(v_port, &n_port->vports, list) 1194 if (v_port->vport == vport) { 1195 found = true; 1196 break; 1197 } 1198 1199 if (!found) { 1200 mutex_unlock(&n_port->lp_mutex); 1201 return -ENOENT; 1202 } 1203 list_del(&vn_port->list); 1204 mutex_unlock(&n_port->lp_mutex); 1205 bnx2fc_free_vport(interface->hba, port->lport); 1206 bnx2fc_port_shutdown(port->lport); 1207 bnx2fc_port_destroy(port); 1208 bnx2fc_interface_put(interface); 1209 return 0; 1210} 1211 1212static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) 1213{ 1214 struct fc_lport *lport = vport->dd_data; 1215 1216 if (disable) { 1217 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1218 fc_fabric_logoff(lport); 1219 } else { 1220 lport->boot_time = jiffies; 1221 fc_fabric_login(lport); 1222 fc_vport_setlink(lport); 1223 } 1224 return 0; 1225} 1226 1227 1228static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) 1229{ 1230 struct net_device *netdev = interface->netdev; 1231 struct net_device *physdev = interface->hba->phys_dev; 1232 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1233 struct netdev_hw_addr *ha; 1234 int sel_san_mac = 0; 1235 1236 /* setup Source MAC Address */ 1237 rcu_read_lock(); 1238 for_each_dev_addr(physdev, ha) { 1239 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", 1240 ha->type); 1241 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], 1242 ha->addr[1], ha->addr[2], ha->addr[3], 1243 ha->addr[4], ha->addr[5]); 1244 1245 if ((ha->type == NETDEV_HW_ADDR_T_SAN) && 1246 (is_valid_ether_addr(ha->addr))) { 1247 memcpy(ctlr->ctl_src_addr, ha->addr, 1248 ETH_ALEN); 1249 sel_san_mac = 1; 1250 BNX2FC_MISC_DBG("Found SAN MAC\n"); 1251 } 1252 } 1253 rcu_read_unlock(); 1254 1255 if (!sel_san_mac) 1256 return -ENODEV; 1257 1258 interface->fip_packet_type.func = bnx2fc_fip_recv; 1259 interface->fip_packet_type.type = htons(ETH_P_FIP); 1260 interface->fip_packet_type.dev = netdev; 1261 dev_add_pack(&interface->fip_packet_type); 1262 1263 interface->fcoe_packet_type.func = bnx2fc_rcv; 1264 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); 1265 interface->fcoe_packet_type.dev = netdev; 1266 dev_add_pack(&interface->fcoe_packet_type); 1267 1268 return 0; 1269} 1270 1271static int bnx2fc_attach_transport(void) 1272{ 1273 bnx2fc_transport_template = 1274 fc_attach_transport(&bnx2fc_transport_function); 1275 1276 if (bnx2fc_transport_template == NULL) { 1277 printk(KERN_ERR PFX "Failed to attach FC transport\n"); 1278 return -ENODEV; 1279 } 1280 1281 bnx2fc_vport_xport_template = 1282 fc_attach_transport(&bnx2fc_vport_xport_function); 1283 if (bnx2fc_vport_xport_template == NULL) { 1284 printk(KERN_ERR PFX 1285 "Failed to attach FC transport for vport\n"); 1286 fc_release_transport(bnx2fc_transport_template); 1287 bnx2fc_transport_template = NULL; 1288 return -ENODEV; 1289 } 1290 return 0; 1291} 1292static void bnx2fc_release_transport(void) 1293{ 1294 fc_release_transport(bnx2fc_transport_template); 1295 fc_release_transport(bnx2fc_vport_xport_template); 1296 bnx2fc_transport_template = NULL; 1297 bnx2fc_vport_xport_template = NULL; 1298} 1299 1300static void bnx2fc_interface_release(struct kref *kref) 1301{ 1302 struct fcoe_ctlr_device *ctlr_dev; 1303 struct bnx2fc_interface *interface; 1304 struct fcoe_ctlr *ctlr; 1305 struct net_device *netdev; 1306 1307 interface = container_of(kref, struct bnx2fc_interface, kref); 1308 BNX2FC_MISC_DBG("Interface is being released\n"); 1309 1310 ctlr = bnx2fc_to_ctlr(interface); 1311 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); 1312 netdev = interface->netdev; 1313 1314 /* tear-down FIP controller */ 1315 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) 1316 fcoe_ctlr_destroy(ctlr); 1317 1318 fcoe_ctlr_device_delete(ctlr_dev); 1319 1320 dev_put(netdev); 1321 module_put(THIS_MODULE); 1322} 1323 1324static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) 1325{ 1326 kref_get(&interface->kref); 1327} 1328 1329static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) 1330{ 1331 kref_put(&interface->kref, bnx2fc_interface_release); 1332} 1333static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) 1334{ 1335 /* Free the command manager */ 1336 if (hba->cmd_mgr) { 1337 bnx2fc_cmd_mgr_free(hba->cmd_mgr); 1338 hba->cmd_mgr = NULL; 1339 } 1340 kfree(hba->tgt_ofld_list); 1341 bnx2fc_unbind_pcidev(hba); 1342 kfree(hba); 1343} 1344 1345/** 1346 * bnx2fc_hba_create - create a new bnx2fc hba 1347 * 1348 * @cnic: pointer to cnic device 1349 * 1350 * Creates a new FCoE hba on the given device. 1351 * 1352 */ 1353static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) 1354{ 1355 struct bnx2fc_hba *hba; 1356 struct fcoe_capabilities *fcoe_cap; 1357 int rc; 1358 1359 hba = kzalloc(sizeof(*hba), GFP_KERNEL); 1360 if (!hba) { 1361 printk(KERN_ERR PFX "Unable to allocate hba structure\n"); 1362 return NULL; 1363 } 1364 spin_lock_init(&hba->hba_lock); 1365 mutex_init(&hba->hba_mutex); 1366 mutex_init(&hba->hba_stats_mutex); 1367 1368 hba->cnic = cnic; 1369 1370 hba->max_tasks = cnic->max_fcoe_exchanges; 1371 hba->elstm_xids = (hba->max_tasks / 2); 1372 hba->max_outstanding_cmds = hba->elstm_xids; 1373 hba->max_xid = (hba->max_tasks - 1); 1374 1375 rc = bnx2fc_bind_pcidev(hba); 1376 if (rc) { 1377 printk(KERN_ERR PFX "create_adapter: bind error\n"); 1378 goto bind_err; 1379 } 1380 hba->phys_dev = cnic->netdev; 1381 hba->next_conn_id = 0; 1382 1383 hba->tgt_ofld_list = 1384 kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *), 1385 GFP_KERNEL); 1386 if (!hba->tgt_ofld_list) { 1387 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); 1388 goto tgtofld_err; 1389 } 1390 1391 hba->num_ofld_sess = 0; 1392 1393 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba); 1394 if (!hba->cmd_mgr) { 1395 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); 1396 goto cmgr_err; 1397 } 1398 fcoe_cap = &hba->fcoe_cap; 1399 1400 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << 1401 FCOE_IOS_PER_CONNECTION_SHIFT; 1402 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << 1403 FCOE_LOGINS_PER_PORT_SHIFT; 1404 fcoe_cap->capability2 = hba->max_outstanding_cmds << 1405 FCOE_NUMBER_OF_EXCHANGES_SHIFT; 1406 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << 1407 FCOE_NPIV_WWN_PER_PORT_SHIFT; 1408 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << 1409 FCOE_TARGETS_SUPPORTED_SHIFT; 1410 fcoe_cap->capability3 |= hba->max_outstanding_cmds << 1411 FCOE_OUTSTANDING_COMMANDS_SHIFT; 1412 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; 1413 1414 init_waitqueue_head(&hba->shutdown_wait); 1415 init_waitqueue_head(&hba->destroy_wait); 1416 INIT_LIST_HEAD(&hba->vports); 1417 1418 return hba; 1419 1420cmgr_err: 1421 kfree(hba->tgt_ofld_list); 1422tgtofld_err: 1423 bnx2fc_unbind_pcidev(hba); 1424bind_err: 1425 kfree(hba); 1426 return NULL; 1427} 1428 1429static struct bnx2fc_interface * 1430bnx2fc_interface_create(struct bnx2fc_hba *hba, 1431 struct net_device *netdev, 1432 enum fip_mode fip_mode) 1433{ 1434 struct fcoe_ctlr_device *ctlr_dev; 1435 struct bnx2fc_interface *interface; 1436 struct fcoe_ctlr *ctlr; 1437 int size; 1438 int rc = 0; 1439 1440 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); 1441 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, 1442 size); 1443 if (!ctlr_dev) { 1444 printk(KERN_ERR PFX "Unable to allocate interface structure\n"); 1445 return NULL; 1446 } 1447 ctlr = fcoe_ctlr_device_priv(ctlr_dev); 1448 ctlr->cdev = ctlr_dev; 1449 interface = fcoe_ctlr_priv(ctlr); 1450 dev_hold(netdev); 1451 kref_init(&interface->kref); 1452 interface->hba = hba; 1453 interface->netdev = netdev; 1454 1455 /* Initialize FIP */ 1456 fcoe_ctlr_init(ctlr, fip_mode); 1457 ctlr->send = bnx2fc_fip_send; 1458 ctlr->update_mac = bnx2fc_update_src_mac; 1459 ctlr->get_src_addr = bnx2fc_get_src_mac; 1460 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); 1461 1462 rc = bnx2fc_interface_setup(interface); 1463 if (!rc) 1464 return interface; 1465 1466 fcoe_ctlr_destroy(ctlr); 1467 dev_put(netdev); 1468 fcoe_ctlr_device_delete(ctlr_dev); 1469 return NULL; 1470} 1471 1472/** 1473 * bnx2fc_if_create - Create FCoE instance on a given interface 1474 * 1475 * @interface: FCoE interface to create a local port on 1476 * @parent: Device pointer to be the parent in sysfs for the SCSI host 1477 * @npiv: Indicates if the port is vport or not 1478 * 1479 * Creates a fc_lport instance and a Scsi_Host instance and configure them. 1480 * 1481 * Returns: Allocated fc_lport or an error pointer 1482 */ 1483static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, 1484 struct device *parent, int npiv) 1485{ 1486 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1487 struct fc_lport *lport, *n_port; 1488 struct fcoe_port *port; 1489 struct Scsi_Host *shost; 1490 struct fc_vport *vport = dev_to_vport(parent); 1491 struct bnx2fc_lport *blport; 1492 struct bnx2fc_hba *hba = interface->hba; 1493 int rc = 0; 1494 1495 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); 1496 if (!blport) { 1497 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); 1498 return NULL; 1499 } 1500 1501 /* Allocate Scsi_Host structure */ 1502 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds; 1503 if (!npiv) 1504 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); 1505 else 1506 lport = libfc_vport_create(vport, sizeof(*port)); 1507 1508 if (!lport) { 1509 printk(KERN_ERR PFX "could not allocate scsi host structure\n"); 1510 goto free_blport; 1511 } 1512 shost = lport->host; 1513 port = lport_priv(lport); 1514 port->lport = lport; 1515 port->priv = interface; 1516 port->get_netdev = bnx2fc_netdev; 1517 1518 /* Configure fcoe_port */ 1519 rc = bnx2fc_lport_config(lport); 1520 if (rc) 1521 goto lp_config_err; 1522 1523 if (npiv) { 1524 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", 1525 vport->node_name, vport->port_name); 1526 fc_set_wwnn(lport, vport->node_name); 1527 fc_set_wwpn(lport, vport->port_name); 1528 } 1529 /* Configure netdev and networking properties of the lport */ 1530 rc = bnx2fc_net_config(lport, interface->netdev); 1531 if (rc) { 1532 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); 1533 goto lp_config_err; 1534 } 1535 1536 rc = bnx2fc_shost_config(lport, parent); 1537 if (rc) { 1538 printk(KERN_ERR PFX "Couldn't configure shost for %s\n", 1539 interface->netdev->name); 1540 goto lp_config_err; 1541 } 1542 1543 /* Initialize the libfc library */ 1544 rc = bnx2fc_libfc_config(lport); 1545 if (rc) { 1546 printk(KERN_ERR PFX "Couldn't configure libfc\n"); 1547 goto shost_err; 1548 } 1549 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1550 1551 if (bnx2fc_devloss_tmo) 1552 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo; 1553 1554 /* Allocate exchange manager */ 1555 if (!npiv) 1556 rc = bnx2fc_em_config(lport, hba); 1557 else { 1558 shost = vport_to_shost(vport); 1559 n_port = shost_priv(shost); 1560 rc = fc_exch_mgr_list_clone(n_port, lport); 1561 } 1562 1563 if (rc) { 1564 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); 1565 goto shost_err; 1566 } 1567 1568 bnx2fc_interface_get(interface); 1569 1570 spin_lock_bh(&hba->hba_lock); 1571 blport->lport = lport; 1572 list_add_tail(&blport->list, &hba->vports); 1573 spin_unlock_bh(&hba->hba_lock); 1574 1575 return lport; 1576 1577shost_err: 1578 scsi_remove_host(shost); 1579lp_config_err: 1580 scsi_host_put(lport->host); 1581free_blport: 1582 kfree(blport); 1583 return NULL; 1584} 1585 1586static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) 1587{ 1588 /* Dont listen for Ethernet packets anymore */ 1589 __dev_remove_pack(&interface->fcoe_packet_type); 1590 __dev_remove_pack(&interface->fip_packet_type); 1591 synchronize_net(); 1592} 1593 1594static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) 1595{ 1596 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1597 struct fc_lport *lport = ctlr->lp; 1598 struct fcoe_port *port = lport_priv(lport); 1599 struct bnx2fc_hba *hba = interface->hba; 1600 1601 /* Stop the transmit retry timer */ 1602 del_timer_sync(&port->timer); 1603 1604 /* Free existing transmit skbs */ 1605 fcoe_clean_pending_queue(lport); 1606 1607 bnx2fc_net_cleanup(interface); 1608 1609 bnx2fc_free_vport(hba, lport); 1610} 1611 1612static void bnx2fc_if_destroy(struct fc_lport *lport) 1613{ 1614 1615 /* Free queued packets for the receive thread */ 1616 bnx2fc_clean_rx_queue(lport); 1617 1618 /* Detach from scsi-ml */ 1619 fc_remove_host(lport->host); 1620 scsi_remove_host(lport->host); 1621 1622 /* 1623 * Note that only the physical lport will have the exchange manager. 1624 * for vports, this function is NOP 1625 */ 1626 fc_exch_mgr_free(lport); 1627 1628 /* Free memory used by statistical counters */ 1629 fc_lport_free_stats(lport); 1630 1631 /* Release Scsi_Host */ 1632 scsi_host_put(lport->host); 1633} 1634 1635static void __bnx2fc_destroy(struct bnx2fc_interface *interface) 1636{ 1637 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1638 struct fc_lport *lport = ctlr->lp; 1639 struct fcoe_port *port = lport_priv(lport); 1640 1641 bnx2fc_interface_cleanup(interface); 1642 bnx2fc_stop(interface); 1643 list_del(&interface->list); 1644 bnx2fc_port_destroy(port); 1645 bnx2fc_interface_put(interface); 1646} 1647 1648/** 1649 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface 1650 * 1651 * @netdev: The net device that the FCoE interface is on 1652 * 1653 * Called from sysfs. 1654 * 1655 * Returns: 0 for success 1656 */ 1657static int bnx2fc_destroy(struct net_device *netdev) 1658{ 1659 struct bnx2fc_interface *interface = NULL; 1660 struct workqueue_struct *timer_work_queue; 1661 struct fcoe_ctlr *ctlr; 1662 int rc = 0; 1663 1664 rtnl_lock(); 1665 mutex_lock(&bnx2fc_dev_lock); 1666 1667 interface = bnx2fc_interface_lookup(netdev); 1668 ctlr = bnx2fc_to_ctlr(interface); 1669 if (!interface || !ctlr->lp) { 1670 rc = -ENODEV; 1671 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); 1672 goto netdev_err; 1673 } 1674 1675 timer_work_queue = interface->timer_work_queue; 1676 __bnx2fc_destroy(interface); 1677 destroy_workqueue(timer_work_queue); 1678 1679netdev_err: 1680 mutex_unlock(&bnx2fc_dev_lock); 1681 rtnl_unlock(); 1682 return rc; 1683} 1684 1685static void bnx2fc_port_destroy(struct fcoe_port *port) 1686{ 1687 struct fc_lport *lport; 1688 1689 lport = port->lport; 1690 BNX2FC_HBA_DBG(lport, "Entered %s, destroying lport %p\n", __func__, lport); 1691 1692 bnx2fc_if_destroy(lport); 1693} 1694 1695static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) 1696{ 1697 bnx2fc_free_fw_resc(hba); 1698 bnx2fc_free_task_ctx(hba); 1699} 1700 1701/** 1702 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated 1703 * pci structure 1704 * 1705 * @hba: Adapter instance 1706 */ 1707static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) 1708{ 1709 if (bnx2fc_setup_task_ctx(hba)) 1710 goto mem_err; 1711 1712 if (bnx2fc_setup_fw_resc(hba)) 1713 goto mem_err; 1714 1715 return 0; 1716mem_err: 1717 bnx2fc_unbind_adapter_devices(hba); 1718 return -ENOMEM; 1719} 1720 1721static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) 1722{ 1723 struct cnic_dev *cnic; 1724 struct pci_dev *pdev; 1725 1726 if (!hba->cnic) { 1727 printk(KERN_ERR PFX "cnic is NULL\n"); 1728 return -ENODEV; 1729 } 1730 cnic = hba->cnic; 1731 pdev = hba->pcidev = cnic->pcidev; 1732 if (!hba->pcidev) 1733 return -ENODEV; 1734 1735 switch (pdev->device) { 1736 case PCI_DEVICE_ID_NX2_57710: 1737 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN); 1738 break; 1739 case PCI_DEVICE_ID_NX2_57711: 1740 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN); 1741 break; 1742 case PCI_DEVICE_ID_NX2_57712: 1743 case PCI_DEVICE_ID_NX2_57712_MF: 1744 case PCI_DEVICE_ID_NX2_57712_VF: 1745 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN); 1746 break; 1747 case PCI_DEVICE_ID_NX2_57800: 1748 case PCI_DEVICE_ID_NX2_57800_MF: 1749 case PCI_DEVICE_ID_NX2_57800_VF: 1750 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN); 1751 break; 1752 case PCI_DEVICE_ID_NX2_57810: 1753 case PCI_DEVICE_ID_NX2_57810_MF: 1754 case PCI_DEVICE_ID_NX2_57810_VF: 1755 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN); 1756 break; 1757 case PCI_DEVICE_ID_NX2_57840: 1758 case PCI_DEVICE_ID_NX2_57840_MF: 1759 case PCI_DEVICE_ID_NX2_57840_VF: 1760 case PCI_DEVICE_ID_NX2_57840_2_20: 1761 case PCI_DEVICE_ID_NX2_57840_4_10: 1762 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN); 1763 break; 1764 default: 1765 pr_err(PFX "Unknown device id 0x%x\n", pdev->device); 1766 break; 1767 } 1768 pci_dev_get(hba->pcidev); 1769 return 0; 1770} 1771 1772static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) 1773{ 1774 if (hba->pcidev) { 1775 hba->chip_num[0] = '\0'; 1776 pci_dev_put(hba->pcidev); 1777 } 1778 hba->pcidev = NULL; 1779} 1780 1781/** 1782 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats 1783 * 1784 * @handle: transport handle pointing to adapter structure 1785 */ 1786static int bnx2fc_ulp_get_stats(void *handle) 1787{ 1788 struct bnx2fc_hba *hba = handle; 1789 struct cnic_dev *cnic; 1790 struct fcoe_stats_info *stats_addr; 1791 1792 if (!hba) 1793 return -EINVAL; 1794 1795 cnic = hba->cnic; 1796 stats_addr = &cnic->stats_addr->fcoe_stat; 1797 if (!stats_addr) 1798 return -EINVAL; 1799 1800 strncpy(stats_addr->version, BNX2FC_VERSION, 1801 sizeof(stats_addr->version)); 1802 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX; 1803 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX; 1804 1805 return 0; 1806} 1807 1808 1809/** 1810 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance 1811 * 1812 * @handle: transport handle pointing to adapter structure 1813 * 1814 * This function maps adapter structure to pcidev structure and initiates 1815 * firmware handshake to enable/initialize on-chip FCoE components. 1816 * This bnx2fc - cnic interface api callback is used after following 1817 * conditions are met - 1818 * a) underlying network interface is up (marked by event NETDEV_UP 1819 * from netdev 1820 * b) bnx2fc adatper structure is registered. 1821 */ 1822static void bnx2fc_ulp_start(void *handle) 1823{ 1824 struct bnx2fc_hba *hba = handle; 1825 struct bnx2fc_interface *interface; 1826 struct fcoe_ctlr *ctlr; 1827 struct fc_lport *lport; 1828 1829 mutex_lock(&bnx2fc_dev_lock); 1830 1831 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1832 bnx2fc_fw_init(hba); 1833 1834 BNX2FC_MISC_DBG("bnx2fc started.\n"); 1835 1836 list_for_each_entry(interface, &if_list, list) { 1837 if (interface->hba == hba) { 1838 ctlr = bnx2fc_to_ctlr(interface); 1839 lport = ctlr->lp; 1840 /* Kick off Fabric discovery*/ 1841 printk(KERN_ERR PFX "ulp_init: start discovery\n"); 1842 lport->tt.frame_send = bnx2fc_xmit; 1843 bnx2fc_start_disc(interface); 1844 } 1845 } 1846 1847 mutex_unlock(&bnx2fc_dev_lock); 1848} 1849 1850static void bnx2fc_port_shutdown(struct fc_lport *lport) 1851{ 1852 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1853 fc_fabric_logoff(lport); 1854 fc_lport_destroy(lport); 1855} 1856 1857static void bnx2fc_stop(struct bnx2fc_interface *interface) 1858{ 1859 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1860 struct fc_lport *lport; 1861 struct fc_lport *vport; 1862 1863 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) 1864 return; 1865 1866 lport = ctlr->lp; 1867 bnx2fc_port_shutdown(lport); 1868 1869 mutex_lock(&lport->lp_mutex); 1870 list_for_each_entry(vport, &lport->vports, list) 1871 fc_host_port_type(vport->host) = 1872 FC_PORTTYPE_UNKNOWN; 1873 mutex_unlock(&lport->lp_mutex); 1874 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; 1875 fcoe_ctlr_link_down(ctlr); 1876 fcoe_clean_pending_queue(lport); 1877} 1878 1879static int bnx2fc_fw_init(struct bnx2fc_hba *hba) 1880{ 1881#define BNX2FC_INIT_POLL_TIME (1000 / HZ) 1882 int rc = -1; 1883 int i = HZ; 1884 1885 rc = bnx2fc_bind_adapter_devices(hba); 1886 if (rc) { 1887 printk(KERN_ALERT PFX 1888 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); 1889 goto err_out; 1890 } 1891 1892 rc = bnx2fc_send_fw_fcoe_init_msg(hba); 1893 if (rc) { 1894 printk(KERN_ALERT PFX 1895 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); 1896 goto err_unbind; 1897 } 1898 1899 /* 1900 * Wait until the adapter init message is complete, and adapter 1901 * state is UP. 1902 */ 1903 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) 1904 msleep(BNX2FC_INIT_POLL_TIME); 1905 1906 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { 1907 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " 1908 "Ignoring...\n", 1909 hba->cnic->netdev->name); 1910 rc = -1; 1911 goto err_unbind; 1912 } 1913 1914 1915 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); 1916 return 0; 1917 1918err_unbind: 1919 bnx2fc_unbind_adapter_devices(hba); 1920err_out: 1921 return rc; 1922} 1923 1924static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) 1925{ 1926 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { 1927 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { 1928 timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer, 1929 0); 1930 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + 1931 jiffies; 1932 add_timer(&hba->destroy_timer); 1933 wait_event_interruptible(hba->destroy_wait, 1934 test_bit(BNX2FC_FLAG_DESTROY_CMPL, 1935 &hba->flags)); 1936 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); 1937 /* This should never happen */ 1938 if (signal_pending(current)) 1939 flush_signals(current); 1940 1941 del_timer_sync(&hba->destroy_timer); 1942 } 1943 bnx2fc_unbind_adapter_devices(hba); 1944 } 1945} 1946 1947/** 1948 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance 1949 * 1950 * @handle: transport handle pointing to adapter structure 1951 * 1952 * Driver checks if adapter is already in shutdown mode, if not start 1953 * the shutdown process. 1954 */ 1955static void bnx2fc_ulp_stop(void *handle) 1956{ 1957 struct bnx2fc_hba *hba = handle; 1958 struct bnx2fc_interface *interface; 1959 1960 printk(KERN_ERR "ULP_STOP\n"); 1961 1962 mutex_lock(&bnx2fc_dev_lock); 1963 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) 1964 goto exit; 1965 list_for_each_entry(interface, &if_list, list) { 1966 if (interface->hba == hba) 1967 bnx2fc_stop(interface); 1968 } 1969 BUG_ON(hba->num_ofld_sess != 0); 1970 1971 mutex_lock(&hba->hba_mutex); 1972 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 1973 clear_bit(ADAPTER_STATE_GOING_DOWN, 1974 &hba->adapter_state); 1975 1976 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); 1977 mutex_unlock(&hba->hba_mutex); 1978 1979 bnx2fc_fw_destroy(hba); 1980exit: 1981 mutex_unlock(&bnx2fc_dev_lock); 1982} 1983 1984static void bnx2fc_start_disc(struct bnx2fc_interface *interface) 1985{ 1986 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); 1987 struct fc_lport *lport; 1988 int wait_cnt = 0; 1989 1990 BNX2FC_MISC_DBG("Entered %s\n", __func__); 1991 /* Kick off FIP/FLOGI */ 1992 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { 1993 printk(KERN_ERR PFX "Init not done yet\n"); 1994 return; 1995 } 1996 1997 lport = ctlr->lp; 1998 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); 1999 2000 if (!bnx2fc_link_ok(lport) && interface->enabled) { 2001 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); 2002 fcoe_ctlr_link_up(ctlr); 2003 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2004 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2005 } 2006 2007 /* wait for the FCF to be selected before issuing FLOGI */ 2008 while (!ctlr->sel_fcf) { 2009 msleep(250); 2010 /* give up after 3 secs */ 2011 if (++wait_cnt > 12) 2012 break; 2013 } 2014 2015 /* Reset max receive frame size to default */ 2016 if (fc_set_mfs(lport, BNX2FC_MFS)) 2017 return; 2018 2019 fc_lport_init(lport); 2020 fc_fabric_login(lport); 2021} 2022 2023 2024/** 2025 * bnx2fc_ulp_init - Initialize an adapter instance 2026 * 2027 * @dev : cnic device handle 2028 * Called from cnic_register_driver() context to initialize all 2029 * enumerated cnic devices. This routine allocates adapter structure 2030 * and other device specific resources. 2031 */ 2032static void bnx2fc_ulp_init(struct cnic_dev *dev) 2033{ 2034 struct bnx2fc_hba *hba; 2035 int rc = 0; 2036 2037 BNX2FC_MISC_DBG("Entered %s\n", __func__); 2038 /* bnx2fc works only when bnx2x is loaded */ 2039 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || 2040 (dev->max_fcoe_conn == 0)) { 2041 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," 2042 " flags: %lx fcoe_conn: %d\n", 2043 dev->netdev->name, dev->flags, dev->max_fcoe_conn); 2044 return; 2045 } 2046 2047 hba = bnx2fc_hba_create(dev); 2048 if (!hba) { 2049 printk(KERN_ERR PFX "hba initialization failed\n"); 2050 return; 2051 } 2052 2053 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name); 2054 2055 /* Add HBA to the adapter list */ 2056 mutex_lock(&bnx2fc_dev_lock); 2057 list_add_tail(&hba->list, &adapter_list); 2058 adapter_count++; 2059 mutex_unlock(&bnx2fc_dev_lock); 2060 2061 dev->fcoe_cap = &hba->fcoe_cap; 2062 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2063 rc = dev->register_device(dev, CNIC_ULP_FCOE, 2064 (void *) hba); 2065 if (rc) 2066 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); 2067 else 2068 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); 2069} 2070 2071/* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */ 2072static int __bnx2fc_disable(struct fcoe_ctlr *ctlr) 2073{ 2074 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2075 2076 if (interface->enabled) { 2077 if (!ctlr->lp) { 2078 pr_err(PFX "__bnx2fc_disable: lport not found\n"); 2079 return -ENODEV; 2080 } else { 2081 interface->enabled = false; 2082 fcoe_ctlr_link_down(ctlr); 2083 fcoe_clean_pending_queue(ctlr->lp); 2084 } 2085 } 2086 return 0; 2087} 2088 2089/* 2090 * Deperecated: Use bnx2fc_enabled() 2091 */ 2092static int bnx2fc_disable(struct net_device *netdev) 2093{ 2094 struct bnx2fc_interface *interface; 2095 struct fcoe_ctlr *ctlr; 2096 int rc = 0; 2097 2098 rtnl_lock(); 2099 mutex_lock(&bnx2fc_dev_lock); 2100 2101 interface = bnx2fc_interface_lookup(netdev); 2102 ctlr = bnx2fc_to_ctlr(interface); 2103 2104 if (!interface) { 2105 rc = -ENODEV; 2106 pr_err(PFX "bnx2fc_disable: interface not found\n"); 2107 } else { 2108 rc = __bnx2fc_disable(ctlr); 2109 } 2110 mutex_unlock(&bnx2fc_dev_lock); 2111 rtnl_unlock(); 2112 return rc; 2113} 2114 2115static uint bnx2fc_npiv_create_vports(struct fc_lport *lport, 2116 struct cnic_fc_npiv_tbl *npiv_tbl) 2117{ 2118 struct fc_vport_identifiers vpid; 2119 uint i, created = 0; 2120 u64 wwnn = 0; 2121 char wwpn_str[32]; 2122 char wwnn_str[32]; 2123 2124 if (npiv_tbl->count > MAX_NPIV_ENTRIES) { 2125 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n"); 2126 goto done; 2127 } 2128 2129 /* Sanity check the first entry to make sure it's not 0 */ 2130 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 && 2131 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) { 2132 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n"); 2133 goto done; 2134 } 2135 2136 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR; 2137 vpid.vport_type = FC_PORTTYPE_NPIV; 2138 vpid.disable = false; 2139 2140 for (i = 0; i < npiv_tbl->count; i++) { 2141 wwnn = wwn_to_u64(npiv_tbl->wwnn[i]); 2142 if (wwnn == 0) { 2143 /* 2144 * If we get a 0 element from for the WWNN then assume 2145 * the WWNN should be the same as the physical port. 2146 */ 2147 wwnn = lport->wwnn; 2148 } 2149 vpid.node_name = wwnn; 2150 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]); 2151 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name), 2152 "NPIV[%u]:%016llx-%016llx", 2153 created, vpid.port_name, vpid.node_name); 2154 fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str)); 2155 fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str)); 2156 BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str, 2157 wwpn_str); 2158 if (fc_vport_create(lport->host, 0, &vpid)) 2159 created++; 2160 else 2161 BNX2FC_HBA_DBG(lport, "Failed to create vport\n"); 2162 } 2163done: 2164 return created; 2165} 2166 2167static int __bnx2fc_enable(struct fcoe_ctlr *ctlr) 2168{ 2169 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); 2170 struct bnx2fc_hba *hba; 2171 struct cnic_fc_npiv_tbl *npiv_tbl; 2172 struct fc_lport *lport; 2173 2174 if (!interface->enabled) { 2175 if (!ctlr->lp) { 2176 pr_err(PFX "__bnx2fc_enable: lport not found\n"); 2177 return -ENODEV; 2178 } else if (!bnx2fc_link_ok(ctlr->lp)) { 2179 fcoe_ctlr_link_up(ctlr); 2180 interface->enabled = true; 2181 } 2182 } 2183 2184 /* Create static NPIV ports if any are contained in NVRAM */ 2185 hba = interface->hba; 2186 lport = ctlr->lp; 2187 2188 if (!hba) 2189 goto done; 2190 2191 if (!hba->cnic) 2192 goto done; 2193 2194 if (!lport) 2195 goto done; 2196 2197 if (!lport->host) 2198 goto done; 2199 2200 if (!hba->cnic->get_fc_npiv_tbl) 2201 goto done; 2202 2203 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL); 2204 if (!npiv_tbl) 2205 goto done; 2206 2207 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl)) 2208 goto done_free; 2209 2210 bnx2fc_npiv_create_vports(lport, npiv_tbl); 2211done_free: 2212 kfree(npiv_tbl); 2213done: 2214 return 0; 2215} 2216 2217/* 2218 * Deprecated: Use bnx2fc_enabled() 2219 */ 2220static int bnx2fc_enable(struct net_device *netdev) 2221{ 2222 struct bnx2fc_interface *interface; 2223 struct fcoe_ctlr *ctlr; 2224 int rc = 0; 2225 2226 rtnl_lock(); 2227 mutex_lock(&bnx2fc_dev_lock); 2228 2229 interface = bnx2fc_interface_lookup(netdev); 2230 ctlr = bnx2fc_to_ctlr(interface); 2231 if (!interface) { 2232 rc = -ENODEV; 2233 pr_err(PFX "bnx2fc_enable: interface not found\n"); 2234 } else { 2235 rc = __bnx2fc_enable(ctlr); 2236 } 2237 2238 mutex_unlock(&bnx2fc_dev_lock); 2239 rtnl_unlock(); 2240 return rc; 2241} 2242 2243/** 2244 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller 2245 * @cdev: The FCoE Controller that is being enabled or disabled 2246 * 2247 * fcoe_sysfs will ensure that the state of 'enabled' has 2248 * changed, so no checking is necessary here. This routine simply 2249 * calls fcoe_enable or fcoe_disable, both of which are deprecated. 2250 * When those routines are removed the functionality can be merged 2251 * here. 2252 */ 2253static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev) 2254{ 2255 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); 2256 2257 switch (cdev->enabled) { 2258 case FCOE_CTLR_ENABLED: 2259 return __bnx2fc_enable(ctlr); 2260 case FCOE_CTLR_DISABLED: 2261 return __bnx2fc_disable(ctlr); 2262 case FCOE_CTLR_UNUSED: 2263 default: 2264 return -ENOTSUPP; 2265 } 2266} 2267 2268enum bnx2fc_create_link_state { 2269 BNX2FC_CREATE_LINK_DOWN, 2270 BNX2FC_CREATE_LINK_UP, 2271}; 2272 2273/** 2274 * _bnx2fc_create() - Create bnx2fc FCoE interface 2275 * @netdev : The net_device object the Ethernet interface to create on 2276 * @fip_mode: The FIP mode for this creation 2277 * @link_state: The ctlr link state on creation 2278 * 2279 * Called from either the libfcoe 'create' module parameter 2280 * via fcoe_create or from fcoe_syfs's ctlr_create file. 2281 * 2282 * libfcoe's 'create' module parameter is deprecated so some 2283 * consolidation of code can be done when that interface is 2284 * removed. 2285 * 2286 * Returns: 0 for success 2287 */ 2288static int _bnx2fc_create(struct net_device *netdev, 2289 enum fip_mode fip_mode, 2290 enum bnx2fc_create_link_state link_state) 2291{ 2292 struct fcoe_ctlr_device *cdev; 2293 struct fcoe_ctlr *ctlr; 2294 struct bnx2fc_interface *interface; 2295 struct bnx2fc_hba *hba; 2296 struct net_device *phys_dev = netdev; 2297 struct fc_lport *lport; 2298 struct ethtool_drvinfo drvinfo; 2299 int rc = 0; 2300 int vlan_id = 0; 2301 2302 BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); 2303 if (fip_mode != FIP_MODE_FABRIC) { 2304 printk(KERN_ERR "fip mode not FABRIC\n"); 2305 return -EIO; 2306 } 2307 2308 rtnl_lock(); 2309 2310 mutex_lock(&bnx2fc_dev_lock); 2311 2312 if (!try_module_get(THIS_MODULE)) { 2313 rc = -EINVAL; 2314 goto mod_err; 2315 } 2316 2317 /* obtain physical netdev */ 2318 if (is_vlan_dev(netdev)) 2319 phys_dev = vlan_dev_real_dev(netdev); 2320 2321 /* verify if the physical device is a netxtreme2 device */ 2322 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { 2323 memset(&drvinfo, 0, sizeof(drvinfo)); 2324 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); 2325 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { 2326 printk(KERN_ERR PFX "Not a netxtreme2 device\n"); 2327 rc = -EINVAL; 2328 goto netdev_err; 2329 } 2330 } else { 2331 printk(KERN_ERR PFX "unable to obtain drv_info\n"); 2332 rc = -EINVAL; 2333 goto netdev_err; 2334 } 2335 2336 /* obtain interface and initialize rest of the structure */ 2337 hba = bnx2fc_hba_lookup(phys_dev); 2338 if (!hba) { 2339 rc = -ENODEV; 2340 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); 2341 goto netdev_err; 2342 } 2343 2344 if (bnx2fc_interface_lookup(netdev)) { 2345 rc = -EEXIST; 2346 goto netdev_err; 2347 } 2348 2349 interface = bnx2fc_interface_create(hba, netdev, fip_mode); 2350 if (!interface) { 2351 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); 2352 rc = -ENOMEM; 2353 goto netdev_err; 2354 } 2355 2356 if (is_vlan_dev(netdev)) { 2357 vlan_id = vlan_dev_vlan_id(netdev); 2358 interface->vlan_enabled = 1; 2359 } 2360 2361 ctlr = bnx2fc_to_ctlr(interface); 2362 cdev = fcoe_ctlr_to_ctlr_dev(ctlr); 2363 interface->vlan_id = vlan_id; 2364 interface->tm_timeout = BNX2FC_TM_TIMEOUT; 2365 2366 interface->timer_work_queue = 2367 create_singlethread_workqueue("bnx2fc_timer_wq"); 2368 if (!interface->timer_work_queue) { 2369 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); 2370 rc = -EINVAL; 2371 goto ifput_err; 2372 } 2373 2374 lport = bnx2fc_if_create(interface, &cdev->dev, 0); 2375 if (!lport) { 2376 printk(KERN_ERR PFX "Failed to create interface (%s)\n", 2377 netdev->name); 2378 rc = -EINVAL; 2379 goto if_create_err; 2380 } 2381 2382 /* Add interface to if_list */ 2383 list_add_tail(&interface->list, &if_list); 2384 2385 lport->boot_time = jiffies; 2386 2387 /* Make this master N_port */ 2388 ctlr->lp = lport; 2389 2390 if (link_state == BNX2FC_CREATE_LINK_UP) 2391 cdev->enabled = FCOE_CTLR_ENABLED; 2392 else 2393 cdev->enabled = FCOE_CTLR_DISABLED; 2394 2395 if (link_state == BNX2FC_CREATE_LINK_UP && 2396 !bnx2fc_link_ok(lport)) { 2397 fcoe_ctlr_link_up(ctlr); 2398 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 2399 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); 2400 } 2401 2402 BNX2FC_HBA_DBG(lport, "create: START DISC\n"); 2403 bnx2fc_start_disc(interface); 2404 2405 if (link_state == BNX2FC_CREATE_LINK_UP) 2406 interface->enabled = true; 2407 2408 /* 2409 * Release from kref_init in bnx2fc_interface_setup, on success 2410 * lport should be holding a reference taken in bnx2fc_if_create 2411 */ 2412 bnx2fc_interface_put(interface); 2413 /* put netdev that was held while calling dev_get_by_name */ 2414 mutex_unlock(&bnx2fc_dev_lock); 2415 rtnl_unlock(); 2416 return 0; 2417 2418if_create_err: 2419 destroy_workqueue(interface->timer_work_queue); 2420ifput_err: 2421 bnx2fc_net_cleanup(interface); 2422 bnx2fc_interface_put(interface); 2423 goto mod_err; 2424netdev_err: 2425 module_put(THIS_MODULE); 2426mod_err: 2427 mutex_unlock(&bnx2fc_dev_lock); 2428 rtnl_unlock(); 2429 return rc; 2430} 2431 2432/** 2433 * bnx2fc_create() - Create a bnx2fc interface 2434 * @netdev : The net_device object the Ethernet interface to create on 2435 * @fip_mode: The FIP mode for this creation 2436 * 2437 * Called from fcoe transport 2438 * 2439 * Returns: 0 for success 2440 */ 2441static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode) 2442{ 2443 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP); 2444} 2445 2446/** 2447 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs 2448 * @netdev: The net_device to be used by the allocated FCoE Controller 2449 * 2450 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr 2451 * in a link_down state. The allows the user an opportunity to configure 2452 * the FCoE Controller from sysfs before enabling the FCoE Controller. 2453 * 2454 * Creating in with this routine starts the FCoE Controller in Fabric 2455 * mode. The user can change to VN2VN or another mode before enabling. 2456 */ 2457static int bnx2fc_ctlr_alloc(struct net_device *netdev) 2458{ 2459 return _bnx2fc_create(netdev, FIP_MODE_FABRIC, 2460 BNX2FC_CREATE_LINK_DOWN); 2461} 2462 2463/** 2464 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance 2465 * 2466 * @cnic: Pointer to cnic device instance 2467 * 2468 **/ 2469static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) 2470{ 2471 struct bnx2fc_hba *hba; 2472 2473 /* Called with bnx2fc_dev_lock held */ 2474 list_for_each_entry(hba, &adapter_list, list) { 2475 if (hba->cnic == cnic) 2476 return hba; 2477 } 2478 return NULL; 2479} 2480 2481static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device 2482 *netdev) 2483{ 2484 struct bnx2fc_interface *interface; 2485 2486 /* Called with bnx2fc_dev_lock held */ 2487 list_for_each_entry(interface, &if_list, list) { 2488 if (interface->netdev == netdev) 2489 return interface; 2490 } 2491 return NULL; 2492} 2493 2494static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device 2495 *phys_dev) 2496{ 2497 struct bnx2fc_hba *hba; 2498 2499 /* Called with bnx2fc_dev_lock held */ 2500 list_for_each_entry(hba, &adapter_list, list) { 2501 if (hba->phys_dev == phys_dev) 2502 return hba; 2503 } 2504 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); 2505 return NULL; 2506} 2507 2508/** 2509 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources 2510 * 2511 * @dev: cnic device handle 2512 */ 2513static void bnx2fc_ulp_exit(struct cnic_dev *dev) 2514{ 2515 struct bnx2fc_hba *hba; 2516 struct bnx2fc_interface *interface, *tmp; 2517 2518 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); 2519 2520 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { 2521 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", 2522 dev->netdev->name, dev->flags); 2523 return; 2524 } 2525 2526 mutex_lock(&bnx2fc_dev_lock); 2527 hba = bnx2fc_find_hba_for_cnic(dev); 2528 if (!hba) { 2529 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", 2530 dev); 2531 mutex_unlock(&bnx2fc_dev_lock); 2532 return; 2533 } 2534 2535 list_del_init(&hba->list); 2536 adapter_count--; 2537 2538 list_for_each_entry_safe(interface, tmp, &if_list, list) 2539 /* destroy not called yet, move to quiesced list */ 2540 if (interface->hba == hba) 2541 __bnx2fc_destroy(interface); 2542 mutex_unlock(&bnx2fc_dev_lock); 2543 2544 bnx2fc_ulp_stop(hba); 2545 /* unregister cnic device */ 2546 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) 2547 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); 2548 bnx2fc_hba_destroy(hba); 2549} 2550 2551static void bnx2fc_rport_terminate_io(struct fc_rport *rport) 2552{ 2553 /* This is a no-op */ 2554} 2555 2556/** 2557 * bnx2fc_fcoe_reset - Resets the fcoe 2558 * 2559 * @shost: shost the reset is from 2560 * 2561 * Returns: always 0 2562 */ 2563static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) 2564{ 2565 struct fc_lport *lport = shost_priv(shost); 2566 fc_lport_reset(lport); 2567 return 0; 2568} 2569 2570 2571static bool bnx2fc_match(struct net_device *netdev) 2572{ 2573 struct net_device *phys_dev = netdev; 2574 2575 mutex_lock(&bnx2fc_dev_lock); 2576 if (is_vlan_dev(netdev)) 2577 phys_dev = vlan_dev_real_dev(netdev); 2578 2579 if (bnx2fc_hba_lookup(phys_dev)) { 2580 mutex_unlock(&bnx2fc_dev_lock); 2581 return true; 2582 } 2583 2584 mutex_unlock(&bnx2fc_dev_lock); 2585 return false; 2586} 2587 2588 2589static struct fcoe_transport bnx2fc_transport = { 2590 .name = {"bnx2fc"}, 2591 .attached = false, 2592 .list = LIST_HEAD_INIT(bnx2fc_transport.list), 2593 .alloc = bnx2fc_ctlr_alloc, 2594 .match = bnx2fc_match, 2595 .create = bnx2fc_create, 2596 .destroy = bnx2fc_destroy, 2597 .enable = bnx2fc_enable, 2598 .disable = bnx2fc_disable, 2599}; 2600 2601/** 2602 * bnx2fc_cpu_online - Create a receive thread for an online CPU 2603 * 2604 * @cpu: cpu index for the online cpu 2605 */ 2606static int bnx2fc_cpu_online(unsigned int cpu) 2607{ 2608 struct bnx2fc_percpu_s *p; 2609 struct task_struct *thread; 2610 2611 p = &per_cpu(bnx2fc_percpu, cpu); 2612 2613 thread = kthread_create_on_node(bnx2fc_percpu_io_thread, 2614 (void *)p, cpu_to_node(cpu), 2615 "bnx2fc_thread/%d", cpu); 2616 if (IS_ERR(thread)) 2617 return PTR_ERR(thread); 2618 2619 /* bind thread to the cpu */ 2620 kthread_bind(thread, cpu); 2621 p->iothread = thread; 2622 wake_up_process(thread); 2623 return 0; 2624} 2625 2626static int bnx2fc_cpu_offline(unsigned int cpu) 2627{ 2628 struct bnx2fc_percpu_s *p; 2629 struct task_struct *thread; 2630 struct bnx2fc_work *work, *tmp; 2631 2632 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); 2633 2634 /* Prevent any new work from being queued for this CPU */ 2635 p = &per_cpu(bnx2fc_percpu, cpu); 2636 spin_lock_bh(&p->fp_work_lock); 2637 thread = p->iothread; 2638 p->iothread = NULL; 2639 2640 /* Free all work in the list */ 2641 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 2642 list_del_init(&work->list); 2643 bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data, 2644 work->num_rq, work->task); 2645 kfree(work); 2646 } 2647 2648 spin_unlock_bh(&p->fp_work_lock); 2649 2650 if (thread) 2651 kthread_stop(thread); 2652 return 0; 2653} 2654 2655static int bnx2fc_slave_configure(struct scsi_device *sdev) 2656{ 2657 if (!bnx2fc_queue_depth) 2658 return 0; 2659 2660 scsi_change_queue_depth(sdev, bnx2fc_queue_depth); 2661 return 0; 2662} 2663 2664static enum cpuhp_state bnx2fc_online_state; 2665 2666/** 2667 * bnx2fc_mod_init - module init entry point 2668 * 2669 * Initialize driver wide global data structures, and register 2670 * with cnic module 2671 **/ 2672static int __init bnx2fc_mod_init(void) 2673{ 2674 struct fcoe_percpu_s *bg; 2675 struct task_struct *l2_thread; 2676 int rc = 0; 2677 unsigned int cpu = 0; 2678 struct bnx2fc_percpu_s *p; 2679 2680 printk(KERN_INFO PFX "%s", version); 2681 2682 /* register as a fcoe transport */ 2683 rc = fcoe_transport_attach(&bnx2fc_transport); 2684 if (rc) { 2685 printk(KERN_ERR "failed to register an fcoe transport, check " 2686 "if libfcoe is loaded\n"); 2687 goto out; 2688 } 2689 2690 INIT_LIST_HEAD(&adapter_list); 2691 INIT_LIST_HEAD(&if_list); 2692 mutex_init(&bnx2fc_dev_lock); 2693 adapter_count = 0; 2694 2695 /* Attach FC transport template */ 2696 rc = bnx2fc_attach_transport(); 2697 if (rc) 2698 goto detach_ft; 2699 2700 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); 2701 if (!bnx2fc_wq) { 2702 rc = -ENOMEM; 2703 goto release_bt; 2704 } 2705 2706 bg = &bnx2fc_global; 2707 skb_queue_head_init(&bg->fcoe_rx_list); 2708 l2_thread = kthread_run(bnx2fc_l2_rcv_thread, 2709 (void *)bg, 2710 "bnx2fc_l2_thread"); 2711 if (IS_ERR(l2_thread)) { 2712 rc = PTR_ERR(l2_thread); 2713 goto free_wq; 2714 } 2715 spin_lock_bh(&bg->fcoe_rx_list.lock); 2716 bg->kthread = l2_thread; 2717 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2718 2719 for_each_possible_cpu(cpu) { 2720 p = &per_cpu(bnx2fc_percpu, cpu); 2721 INIT_LIST_HEAD(&p->work_list); 2722 spin_lock_init(&p->fp_work_lock); 2723 } 2724 2725 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online", 2726 bnx2fc_cpu_online, bnx2fc_cpu_offline); 2727 if (rc < 0) 2728 goto stop_thread; 2729 bnx2fc_online_state = rc; 2730 2731 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); 2732 return 0; 2733 2734stop_thread: 2735 kthread_stop(l2_thread); 2736free_wq: 2737 destroy_workqueue(bnx2fc_wq); 2738release_bt: 2739 bnx2fc_release_transport(); 2740detach_ft: 2741 fcoe_transport_detach(&bnx2fc_transport); 2742out: 2743 return rc; 2744} 2745 2746static void __exit bnx2fc_mod_exit(void) 2747{ 2748 LIST_HEAD(to_be_deleted); 2749 struct bnx2fc_hba *hba, *next; 2750 struct fcoe_percpu_s *bg; 2751 struct task_struct *l2_thread; 2752 struct sk_buff *skb; 2753 2754 /* 2755 * NOTE: Since cnic calls register_driver routine rtnl_lock, 2756 * it will have higher precedence than bnx2fc_dev_lock. 2757 * unregister_device() cannot be called with bnx2fc_dev_lock 2758 * held. 2759 */ 2760 mutex_lock(&bnx2fc_dev_lock); 2761 list_splice_init(&adapter_list, &to_be_deleted); 2762 adapter_count = 0; 2763 mutex_unlock(&bnx2fc_dev_lock); 2764 2765 /* Unregister with cnic */ 2766 list_for_each_entry_safe(hba, next, &to_be_deleted, list) { 2767 list_del_init(&hba->list); 2768 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", 2769 hba); 2770 bnx2fc_ulp_stop(hba); 2771 /* unregister cnic device */ 2772 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, 2773 &hba->reg_with_cnic)) 2774 hba->cnic->unregister_device(hba->cnic, 2775 CNIC_ULP_FCOE); 2776 bnx2fc_hba_destroy(hba); 2777 } 2778 cnic_unregister_driver(CNIC_ULP_FCOE); 2779 2780 /* Destroy global thread */ 2781 bg = &bnx2fc_global; 2782 spin_lock_bh(&bg->fcoe_rx_list.lock); 2783 l2_thread = bg->kthread; 2784 bg->kthread = NULL; 2785 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) 2786 kfree_skb(skb); 2787 2788 spin_unlock_bh(&bg->fcoe_rx_list.lock); 2789 2790 if (l2_thread) 2791 kthread_stop(l2_thread); 2792 2793 cpuhp_remove_state(bnx2fc_online_state); 2794 2795 destroy_workqueue(bnx2fc_wq); 2796 /* 2797 * detach from scsi transport 2798 * must happen after all destroys are done 2799 */ 2800 bnx2fc_release_transport(); 2801 2802 /* detach from fcoe transport */ 2803 fcoe_transport_detach(&bnx2fc_transport); 2804} 2805 2806module_init(bnx2fc_mod_init); 2807module_exit(bnx2fc_mod_exit); 2808 2809static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { 2810 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, 2811 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, 2812 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, 2813 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, 2814 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, 2815 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, 2816 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, 2817 2818 .get_fcoe_fcf_selected = fcoe_fcf_get_selected, 2819 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, 2820}; 2821 2822static struct fc_function_template bnx2fc_transport_function = { 2823 .show_host_node_name = 1, 2824 .show_host_port_name = 1, 2825 .show_host_supported_classes = 1, 2826 .show_host_supported_fc4s = 1, 2827 .show_host_active_fc4s = 1, 2828 .show_host_maxframe_size = 1, 2829 2830 .show_host_port_id = 1, 2831 .show_host_supported_speeds = 1, 2832 .get_host_speed = fc_get_host_speed, 2833 .show_host_speed = 1, 2834 .show_host_port_type = 1, 2835 .get_host_port_state = fc_get_host_port_state, 2836 .show_host_port_state = 1, 2837 .show_host_symbolic_name = 1, 2838 2839 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2840 sizeof(struct bnx2fc_rport)), 2841 .show_rport_maxframe_size = 1, 2842 .show_rport_supported_classes = 1, 2843 2844 .show_host_fabric_name = 1, 2845 .show_starget_node_name = 1, 2846 .show_starget_port_name = 1, 2847 .show_starget_port_id = 1, 2848 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2849 .show_rport_dev_loss_tmo = 1, 2850 .get_fc_host_stats = bnx2fc_get_host_stats, 2851 2852 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2853 2854 .terminate_rport_io = bnx2fc_rport_terminate_io, 2855 2856 .vport_create = bnx2fc_vport_create, 2857 .vport_delete = bnx2fc_vport_destroy, 2858 .vport_disable = bnx2fc_vport_disable, 2859 .bsg_request = fc_lport_bsg_request, 2860}; 2861 2862static struct fc_function_template bnx2fc_vport_xport_function = { 2863 .show_host_node_name = 1, 2864 .show_host_port_name = 1, 2865 .show_host_supported_classes = 1, 2866 .show_host_supported_fc4s = 1, 2867 .show_host_active_fc4s = 1, 2868 .show_host_maxframe_size = 1, 2869 2870 .show_host_port_id = 1, 2871 .show_host_supported_speeds = 1, 2872 .get_host_speed = fc_get_host_speed, 2873 .show_host_speed = 1, 2874 .show_host_port_type = 1, 2875 .get_host_port_state = fc_get_host_port_state, 2876 .show_host_port_state = 1, 2877 .show_host_symbolic_name = 1, 2878 2879 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2880 sizeof(struct bnx2fc_rport)), 2881 .show_rport_maxframe_size = 1, 2882 .show_rport_supported_classes = 1, 2883 2884 .show_host_fabric_name = 1, 2885 .show_starget_node_name = 1, 2886 .show_starget_port_name = 1, 2887 .show_starget_port_id = 1, 2888 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2889 .show_rport_dev_loss_tmo = 1, 2890 .get_fc_host_stats = fc_get_host_stats, 2891 .issue_fc_host_lip = bnx2fc_fcoe_reset, 2892 .terminate_rport_io = fc_rport_terminate_io, 2893 .bsg_request = fc_lport_bsg_request, 2894}; 2895 2896/* 2897 * Additional scsi_host attributes. 2898 */ 2899static ssize_t 2900bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr, 2901 char *buf) 2902{ 2903 struct Scsi_Host *shost = class_to_shost(dev); 2904 struct fc_lport *lport = shost_priv(shost); 2905 struct fcoe_port *port = lport_priv(lport); 2906 struct bnx2fc_interface *interface = port->priv; 2907 2908 sprintf(buf, "%u\n", interface->tm_timeout); 2909 return strlen(buf); 2910} 2911 2912static ssize_t 2913bnx2fc_tm_timeout_store(struct device *dev, 2914 struct device_attribute *attr, const char *buf, size_t count) 2915{ 2916 struct Scsi_Host *shost = class_to_shost(dev); 2917 struct fc_lport *lport = shost_priv(shost); 2918 struct fcoe_port *port = lport_priv(lport); 2919 struct bnx2fc_interface *interface = port->priv; 2920 int rval, val; 2921 2922 rval = kstrtouint(buf, 10, &val); 2923 if (rval) 2924 return rval; 2925 if (val > 255) 2926 return -ERANGE; 2927 2928 interface->tm_timeout = (u8)val; 2929 return strlen(buf); 2930} 2931 2932static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show, 2933 bnx2fc_tm_timeout_store); 2934 2935static struct attribute *bnx2fc_host_attrs[] = { 2936 &dev_attr_tm_timeout.attr, 2937 NULL, 2938}; 2939 2940ATTRIBUTE_GROUPS(bnx2fc_host); 2941 2942/* 2943 * scsi_host_template structure used while registering with SCSI-ml 2944 */ 2945static struct scsi_host_template bnx2fc_shost_template = { 2946 .module = THIS_MODULE, 2947 .name = "QLogic Offload FCoE Initiator", 2948 .queuecommand = bnx2fc_queuecommand, 2949 .eh_timed_out = fc_eh_timed_out, 2950 .eh_abort_handler = bnx2fc_eh_abort, /* abts */ 2951 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ 2952 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ 2953 .eh_host_reset_handler = fc_eh_host_reset, 2954 .slave_alloc = fc_slave_alloc, 2955 .change_queue_depth = scsi_change_queue_depth, 2956 .this_id = -1, 2957 .cmd_per_lun = 3, 2958 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, 2959 .dma_boundary = 0x7fff, 2960 .max_sectors = 0x3fbf, 2961 .track_queue_depth = 1, 2962 .slave_configure = bnx2fc_slave_configure, 2963 .shost_groups = bnx2fc_host_groups, 2964 .cmd_size = sizeof(struct bnx2fc_priv), 2965}; 2966 2967static struct libfc_function_template bnx2fc_libfc_fcn_templ = { 2968 .frame_send = bnx2fc_xmit, 2969 .elsct_send = bnx2fc_elsct_send, 2970 .fcp_abort_io = bnx2fc_abort_io, 2971 .fcp_cleanup = bnx2fc_cleanup, 2972 .get_lesb = fcoe_get_lesb, 2973 .rport_event_callback = bnx2fc_rport_event_handler, 2974}; 2975 2976/* 2977 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface 2978 * structure carrying callback function pointers 2979 */ 2980static struct cnic_ulp_ops bnx2fc_cnic_cb = { 2981 .owner = THIS_MODULE, 2982 .cnic_init = bnx2fc_ulp_init, 2983 .cnic_exit = bnx2fc_ulp_exit, 2984 .cnic_start = bnx2fc_ulp_start, 2985 .cnic_stop = bnx2fc_ulp_stop, 2986 .indicate_kcqes = bnx2fc_indicate_kcqe, 2987 .indicate_netevent = bnx2fc_indicate_netevent, 2988 .cnic_get_stats = bnx2fc_ulp_get_stats, 2989}; 2990