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[SCSI] bnx2fc: Remove rtnl_trylock/restart_syscall checks
[linux-2.6.git] / drivers / scsi / bnx2fc / bnx2fc_fcoe.c
blob13271a43cd35fab8034f0fe5340bf93cad546c92
1 /* bnx2fc_fcoe.c: Broadcom NetXtreme II 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 - 2010 Broadcom Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation.
11 *
12 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
13 */
14
15 #include "bnx2fc.h"
16
17 static struct list_head adapter_list;
18 static u32 adapter_count;
19 static DEFINE_MUTEX(bnx2fc_dev_lock);
20 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
21
22 #define DRV_MODULE_NAME "bnx2fc"
23 #define DRV_MODULE_VERSION BNX2FC_VERSION
24 #define DRV_MODULE_RELDATE "Jan 25, 2011"
25
26
27 static char version[] __devinitdata =
28 "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \
29 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
30
31
32 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
33 MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver");
34 MODULE_LICENSE("GPL");
35 MODULE_VERSION(DRV_MODULE_VERSION);
36
37 #define BNX2FC_MAX_QUEUE_DEPTH 256
38 #define BNX2FC_MIN_QUEUE_DEPTH 32
39 #define FCOE_WORD_TO_BYTE 4
40
41 static struct scsi_transport_template *bnx2fc_transport_template;
42 static struct scsi_transport_template *bnx2fc_vport_xport_template;
43
44 struct workqueue_struct *bnx2fc_wq;
45
46 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
47 * Here the io threads are per cpu but the l2 thread is just one
48 */
49 struct fcoe_percpu_s bnx2fc_global;
50 DEFINE_SPINLOCK(bnx2fc_global_lock);
51
52 static struct cnic_ulp_ops bnx2fc_cnic_cb;
53 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
54 static struct scsi_host_template bnx2fc_shost_template;
55 static struct fc_function_template bnx2fc_transport_function;
56 static struct fc_function_template bnx2fc_vport_xport_function;
57 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
58 static int bnx2fc_destroy(struct net_device *net_device);
59 static int bnx2fc_enable(struct net_device *netdev);
60 static int bnx2fc_disable(struct net_device *netdev);
61
62 static void bnx2fc_recv_frame(struct sk_buff *skb);
63
64 static void bnx2fc_start_disc(struct bnx2fc_hba *hba);
65 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
66 static int bnx2fc_net_config(struct fc_lport *lp);
67 static int bnx2fc_lport_config(struct fc_lport *lport);
68 static int bnx2fc_em_config(struct fc_lport *lport);
69 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
70 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
71 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
72 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
73 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_hba *hba,
74 struct device *parent, int npiv);
75 static void bnx2fc_destroy_work(struct work_struct *work);
76
77 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
78 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
79
80 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
81 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
82
83 static void bnx2fc_port_shutdown(struct fc_lport *lport);
84 static void bnx2fc_stop(struct bnx2fc_hba *hba);
85 static int __init bnx2fc_mod_init(void);
86 static void __exit bnx2fc_mod_exit(void);
87
88 unsigned int bnx2fc_debug_level;
89 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
90
91 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
92 unsigned long action, void *hcpu);
93 /* notification function for CPU hotplug events */
94 static struct notifier_block bnx2fc_cpu_notifier = {
95 .notifier_call = bnx2fc_cpu_callback,
96 };
97
98 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
99 {
100 struct fcoe_percpu_s *bg;
101 struct fcoe_rcv_info *fr;
102 struct sk_buff_head *list;
103 struct sk_buff *skb, *next;
104 struct sk_buff *head;
105
106 bg = &bnx2fc_global;
107 spin_lock_bh(&bg->fcoe_rx_list.lock);
108 list = &bg->fcoe_rx_list;
109 head = list->next;
110 for (skb = head; skb != (struct sk_buff *)list;
111 skb = next) {
112 next = skb->next;
113 fr = fcoe_dev_from_skb(skb);
114 if (fr->fr_dev == lp) {
115 __skb_unlink(skb, list);
116 kfree_skb(skb);
117 }
118 }
119 spin_unlock_bh(&bg->fcoe_rx_list.lock);
120 }
121
122 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
123 {
124 int rc;
125 spin_lock(&bnx2fc_global_lock);
126 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
127 spin_unlock(&bnx2fc_global_lock);
128
129 return rc;
130 }
131
132 static void bnx2fc_abort_io(struct fc_lport *lport)
133 {
134 /*
135 * This function is no-op for bnx2fc, but we do
136 * not want to leave it as NULL either, as libfc
137 * can call the default function which is
138 * fc_fcp_abort_io.
139 */
140 }
141
142 static void bnx2fc_cleanup(struct fc_lport *lport)
143 {
144 struct fcoe_port *port = lport_priv(lport);
145 struct bnx2fc_hba *hba = port->priv;
146 struct bnx2fc_rport *tgt;
147 int i;
148
149 BNX2FC_MISC_DBG("Entered %s\n", __func__);
150 mutex_lock(&hba->hba_mutex);
151 spin_lock_bh(&hba->hba_lock);
152 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
153 tgt = hba->tgt_ofld_list[i];
154 if (tgt) {
155 /* Cleanup IOs belonging to requested vport */
156 if (tgt->port == port) {
157 spin_unlock_bh(&hba->hba_lock);
158 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
159 bnx2fc_flush_active_ios(tgt);
160 spin_lock_bh(&hba->hba_lock);
161 }
162 }
163 }
164 spin_unlock_bh(&hba->hba_lock);
165 mutex_unlock(&hba->hba_mutex);
166 }
167
168 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
169 struct fc_frame *fp)
170 {
171 struct fc_rport_priv *rdata = tgt->rdata;
172 struct fc_frame_header *fh;
173 int rc = 0;
174
175 fh = fc_frame_header_get(fp);
176 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
177 "r_ctl = 0x%x\n", rdata->ids.port_id,
178 ntohs(fh->fh_ox_id), fh->fh_r_ctl);
179 if ((fh->fh_type == FC_TYPE_ELS) &&
180 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
181
182 switch (fc_frame_payload_op(fp)) {
183 case ELS_ADISC:
184 rc = bnx2fc_send_adisc(tgt, fp);
185 break;
186 case ELS_LOGO:
187 rc = bnx2fc_send_logo(tgt, fp);
188 break;
189 case ELS_RLS:
190 rc = bnx2fc_send_rls(tgt, fp);
191 break;
192 default:
193 break;
194 }
195 } else if ((fh->fh_type == FC_TYPE_BLS) &&
196 (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
197 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
198 else {
199 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
200 "rctl 0x%x thru non-offload path\n",
201 fh->fh_type, fh->fh_r_ctl);
202 return -ENODEV;
203 }
204 if (rc)
205 return -ENOMEM;
206 else
207 return 0;
208 }
209
210 /**
211 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
212 *
213 * @lport: the associated local port
214 * @fp: the fc_frame to be transmitted
215 */
216 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
217 {
218 struct ethhdr *eh;
219 struct fcoe_crc_eof *cp;
220 struct sk_buff *skb;
221 struct fc_frame_header *fh;
222 struct bnx2fc_hba *hba;
223 struct fcoe_port *port;
224 struct fcoe_hdr *hp;
225 struct bnx2fc_rport *tgt;
226 struct fcoe_dev_stats *stats;
227 u8 sof, eof;
228 u32 crc;
229 unsigned int hlen, tlen, elen;
230 int wlen, rc = 0;
231
232 port = (struct fcoe_port *)lport_priv(lport);
233 hba = port->priv;
234
235 fh = fc_frame_header_get(fp);
236
237 skb = fp_skb(fp);
238 if (!lport->link_up) {
239 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
240 kfree_skb(skb);
241 return 0;
242 }
243
244 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
245 if (!hba->ctlr.sel_fcf) {
246 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
247 kfree_skb(skb);
248 return -EINVAL;
249 }
250 if (fcoe_ctlr_els_send(&hba->ctlr, lport, skb))
251 return 0;
252 }
253
254 sof = fr_sof(fp);
255 eof = fr_eof(fp);
256
257 /*
258 * Snoop the frame header to check if the frame is for
259 * an offloaded session
260 */
261 /*
262 * tgt_ofld_list access is synchronized using
263 * both hba mutex and hba lock. Atleast hba mutex or
264 * hba lock needs to be held for read access.
265 */
266
267 spin_lock_bh(&hba->hba_lock);
268 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
269 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
270 /* This frame is for offloaded session */
271 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
272 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
273 spin_unlock_bh(&hba->hba_lock);
274 rc = bnx2fc_xmit_l2_frame(tgt, fp);
275 if (rc != -ENODEV) {
276 kfree_skb(skb);
277 return rc;
278 }
279 } else {
280 spin_unlock_bh(&hba->hba_lock);
281 }
282
283 elen = sizeof(struct ethhdr);
284 hlen = sizeof(struct fcoe_hdr);
285 tlen = sizeof(struct fcoe_crc_eof);
286 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
287
288 skb->ip_summed = CHECKSUM_NONE;
289 crc = fcoe_fc_crc(fp);
290
291 /* copy port crc and eof to the skb buff */
292 if (skb_is_nonlinear(skb)) {
293 skb_frag_t *frag;
294 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
295 kfree_skb(skb);
296 return -ENOMEM;
297 }
298 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
299 cp = kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ)
300 + frag->page_offset;
301 } else {
302 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
303 }
304
305 memset(cp, 0, sizeof(*cp));
306 cp->fcoe_eof = eof;
307 cp->fcoe_crc32 = cpu_to_le32(~crc);
308 if (skb_is_nonlinear(skb)) {
309 kunmap_atomic(cp, KM_SKB_DATA_SOFTIRQ);
310 cp = NULL;
311 }
312
313 /* adjust skb network/transport offsets to match mac/fcoe/port */
314 skb_push(skb, elen + hlen);
315 skb_reset_mac_header(skb);
316 skb_reset_network_header(skb);
317 skb->mac_len = elen;
318 skb->protocol = htons(ETH_P_FCOE);
319 skb->dev = hba->netdev;
320
321 /* fill up mac and fcoe headers */
322 eh = eth_hdr(skb);
323 eh->h_proto = htons(ETH_P_FCOE);
324 if (hba->ctlr.map_dest)
325 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
326 else
327 /* insert GW address */
328 memcpy(eh->h_dest, hba->ctlr.dest_addr, ETH_ALEN);
329
330 if (unlikely(hba->ctlr.flogi_oxid != FC_XID_UNKNOWN))
331 memcpy(eh->h_source, hba->ctlr.ctl_src_addr, ETH_ALEN);
332 else
333 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
334
335 hp = (struct fcoe_hdr *)(eh + 1);
336 memset(hp, 0, sizeof(*hp));
337 if (FC_FCOE_VER)
338 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
339 hp->fcoe_sof = sof;
340
341 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
342 if (lport->seq_offload && fr_max_payload(fp)) {
343 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
344 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
345 } else {
346 skb_shinfo(skb)->gso_type = 0;
347 skb_shinfo(skb)->gso_size = 0;
348 }
349
350 /*update tx stats */
351 stats = per_cpu_ptr(lport->dev_stats, get_cpu());
352 stats->TxFrames++;
353 stats->TxWords += wlen;
354 put_cpu();
355
356 /* send down to lld */
357 fr_dev(fp) = lport;
358 if (port->fcoe_pending_queue.qlen)
359 fcoe_check_wait_queue(lport, skb);
360 else if (fcoe_start_io(skb))
361 fcoe_check_wait_queue(lport, skb);
362
363 return 0;
364 }
365
366 /**
367 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
368 *
369 * @skb: the receive socket buffer
370 * @dev: associated net device
371 * @ptype: context
372 * @olddev: last device
373 *
374 * This function receives the packet and builds FC frame and passes it up
375 */
376 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
377 struct packet_type *ptype, struct net_device *olddev)
378 {
379 struct fc_lport *lport;
380 struct bnx2fc_hba *hba;
381 struct fc_frame_header *fh;
382 struct fcoe_rcv_info *fr;
383 struct fcoe_percpu_s *bg;
384 unsigned short oxid;
385
386 hba = container_of(ptype, struct bnx2fc_hba, fcoe_packet_type);
387 lport = hba->ctlr.lp;
388
389 if (unlikely(lport == NULL)) {
390 printk(KERN_ALERT PFX "bnx2fc_rcv: lport is NULL\n");
391 goto err;
392 }
393
394 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
395 printk(KERN_ALERT PFX "bnx2fc_rcv: Wrong FC type frame\n");
396 goto err;
397 }
398
399 /*
400 * Check for minimum frame length, and make sure required FCoE
401 * and FC headers are pulled into the linear data area.
402 */
403 if (unlikely((skb->len < FCOE_MIN_FRAME) ||
404 !pskb_may_pull(skb, FCOE_HEADER_LEN)))
405 goto err;
406
407 skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
408 fh = (struct fc_frame_header *) skb_transport_header(skb);
409
410 oxid = ntohs(fh->fh_ox_id);
411
412 fr = fcoe_dev_from_skb(skb);
413 fr->fr_dev = lport;
414 fr->ptype = ptype;
415
416 bg = &bnx2fc_global;
417 spin_lock_bh(&bg->fcoe_rx_list.lock);
418
419 __skb_queue_tail(&bg->fcoe_rx_list, skb);
420 if (bg->fcoe_rx_list.qlen == 1)
421 wake_up_process(bg->thread);
422
423 spin_unlock_bh(&bg->fcoe_rx_list.lock);
424
425 return 0;
426 err:
427 kfree_skb(skb);
428 return -1;
429 }
430
431 static int bnx2fc_l2_rcv_thread(void *arg)
432 {
433 struct fcoe_percpu_s *bg = arg;
434 struct sk_buff *skb;
435
436 set_user_nice(current, -20);
437 set_current_state(TASK_INTERRUPTIBLE);
438 while (!kthread_should_stop()) {
439 schedule();
440 set_current_state(TASK_RUNNING);
441 spin_lock_bh(&bg->fcoe_rx_list.lock);
442 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
443 spin_unlock_bh(&bg->fcoe_rx_list.lock);
444 bnx2fc_recv_frame(skb);
445 spin_lock_bh(&bg->fcoe_rx_list.lock);
446 }
447 spin_unlock_bh(&bg->fcoe_rx_list.lock);
448 set_current_state(TASK_INTERRUPTIBLE);
449 }
450 set_current_state(TASK_RUNNING);
451 return 0;
452 }
453
454
455 static void bnx2fc_recv_frame(struct sk_buff *skb)
456 {
457 u32 fr_len;
458 struct fc_lport *lport;
459 struct fcoe_rcv_info *fr;
460 struct fcoe_dev_stats *stats;
461 struct fc_frame_header *fh;
462 struct fcoe_crc_eof crc_eof;
463 struct fc_frame *fp;
464 struct fc_lport *vn_port;
465 struct fcoe_port *port;
466 u8 *mac = NULL;
467 u8 *dest_mac = NULL;
468 struct fcoe_hdr *hp;
469
470 fr = fcoe_dev_from_skb(skb);
471 lport = fr->fr_dev;
472 if (unlikely(lport == NULL)) {
473 printk(KERN_ALERT PFX "Invalid lport struct\n");
474 kfree_skb(skb);
475 return;
476 }
477
478 if (skb_is_nonlinear(skb))
479 skb_linearize(skb);
480 mac = eth_hdr(skb)->h_source;
481 dest_mac = eth_hdr(skb)->h_dest;
482
483 /* Pull the header */
484 hp = (struct fcoe_hdr *) skb_network_header(skb);
485 fh = (struct fc_frame_header *) skb_transport_header(skb);
486 skb_pull(skb, sizeof(struct fcoe_hdr));
487 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
488
489 stats = per_cpu_ptr(lport->dev_stats, get_cpu());
490 stats->RxFrames++;
491 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
492
493 fp = (struct fc_frame *)skb;
494 fc_frame_init(fp);
495 fr_dev(fp) = lport;
496 fr_sof(fp) = hp->fcoe_sof;
497 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
498 put_cpu();
499 kfree_skb(skb);
500 return;
501 }
502 fr_eof(fp) = crc_eof.fcoe_eof;
503 fr_crc(fp) = crc_eof.fcoe_crc32;
504 if (pskb_trim(skb, fr_len)) {
505 put_cpu();
506 kfree_skb(skb);
507 return;
508 }
509
510 fh = fc_frame_header_get(fp);
511
512 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
513 if (vn_port) {
514 port = lport_priv(vn_port);
515 if (compare_ether_addr(port->data_src_addr, dest_mac)
516 != 0) {
517 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
518 put_cpu();
519 kfree_skb(skb);
520 return;
521 }
522 }
523 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
524 fh->fh_type == FC_TYPE_FCP) {
525 /* Drop FCP data. We dont this in L2 path */
526 put_cpu();
527 kfree_skb(skb);
528 return;
529 }
530 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
531 fh->fh_type == FC_TYPE_ELS) {
532 switch (fc_frame_payload_op(fp)) {
533 case ELS_LOGO:
534 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
535 /* drop non-FIP LOGO */
536 put_cpu();
537 kfree_skb(skb);
538 return;
539 }
540 break;
541 }
542 }
543 if (le32_to_cpu(fr_crc(fp)) !=
544 ~crc32(~0, skb->data, fr_len)) {
545 if (stats->InvalidCRCCount < 5)
546 printk(KERN_WARNING PFX "dropping frame with "
547 "CRC error\n");
548 stats->InvalidCRCCount++;
549 put_cpu();
550 kfree_skb(skb);
551 return;
552 }
553 put_cpu();
554 fc_exch_recv(lport, fp);
555 }
556
557 /**
558 * bnx2fc_percpu_io_thread - thread per cpu for ios
559 *
560 * @arg: ptr to bnx2fc_percpu_info structure
561 */
562 int bnx2fc_percpu_io_thread(void *arg)
563 {
564 struct bnx2fc_percpu_s *p = arg;
565 struct bnx2fc_work *work, *tmp;
566 LIST_HEAD(work_list);
567
568 set_user_nice(current, -20);
569 set_current_state(TASK_INTERRUPTIBLE);
570 while (!kthread_should_stop()) {
571 schedule();
572 set_current_state(TASK_RUNNING);
573 spin_lock_bh(&p->fp_work_lock);
574 while (!list_empty(&p->work_list)) {
575 list_splice_init(&p->work_list, &work_list);
576 spin_unlock_bh(&p->fp_work_lock);
577
578 list_for_each_entry_safe(work, tmp, &work_list, list) {
579 list_del_init(&work->list);
580 bnx2fc_process_cq_compl(work->tgt, work->wqe);
581 kfree(work);
582 }
583
584 spin_lock_bh(&p->fp_work_lock);
585 }
586 spin_unlock_bh(&p->fp_work_lock);
587 set_current_state(TASK_INTERRUPTIBLE);
588 }
589 set_current_state(TASK_RUNNING);
590
591 return 0;
592 }
593
594 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
595 {
596 struct fc_host_statistics *bnx2fc_stats;
597 struct fc_lport *lport = shost_priv(shost);
598 struct fcoe_port *port = lport_priv(lport);
599 struct bnx2fc_hba *hba = port->priv;
600 struct fcoe_statistics_params *fw_stats;
601 int rc = 0;
602
603 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
604 if (!fw_stats)
605 return NULL;
606
607 bnx2fc_stats = fc_get_host_stats(shost);
608
609 init_completion(&hba->stat_req_done);
610 if (bnx2fc_send_stat_req(hba))
611 return bnx2fc_stats;
612 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
613 if (!rc) {
614 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
615 return bnx2fc_stats;
616 }
617 bnx2fc_stats->invalid_crc_count += fw_stats->rx_stat1.fc_crc_cnt;
618 bnx2fc_stats->tx_frames += fw_stats->tx_stat.fcoe_tx_pkt_cnt;
619 bnx2fc_stats->tx_words += (fw_stats->tx_stat.fcoe_tx_byte_cnt) / 4;
620 bnx2fc_stats->rx_frames += fw_stats->rx_stat0.fcoe_rx_pkt_cnt;
621 bnx2fc_stats->rx_words += (fw_stats->rx_stat0.fcoe_rx_byte_cnt) / 4;
622
623 bnx2fc_stats->dumped_frames = 0;
624 bnx2fc_stats->lip_count = 0;
625 bnx2fc_stats->nos_count = 0;
626 bnx2fc_stats->loss_of_sync_count = 0;
627 bnx2fc_stats->loss_of_signal_count = 0;
628 bnx2fc_stats->prim_seq_protocol_err_count = 0;
629
630 return bnx2fc_stats;
631 }
632
633 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
634 {
635 struct fcoe_port *port = lport_priv(lport);
636 struct bnx2fc_hba *hba = port->priv;
637 struct Scsi_Host *shost = lport->host;
638 int rc = 0;
639
640 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
641 shost->max_lun = BNX2FC_MAX_LUN;
642 shost->max_id = BNX2FC_MAX_FCP_TGT;
643 shost->max_channel = 0;
644 if (lport->vport)
645 shost->transportt = bnx2fc_vport_xport_template;
646 else
647 shost->transportt = bnx2fc_transport_template;
648
649 /* Add the new host to SCSI-ml */
650 rc = scsi_add_host(lport->host, dev);
651 if (rc) {
652 printk(KERN_ERR PFX "Error on scsi_add_host\n");
653 return rc;
654 }
655 if (!lport->vport)
656 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
657 sprintf(fc_host_symbolic_name(lport->host), "%s v%s over %s",
658 BNX2FC_NAME, BNX2FC_VERSION,
659 hba->netdev->name);
660
661 return 0;
662 }
663
664 static int bnx2fc_mfs_update(struct fc_lport *lport)
665 {
666 struct fcoe_port *port = lport_priv(lport);
667 struct bnx2fc_hba *hba = port->priv;
668 struct net_device *netdev = hba->netdev;
669 u32 mfs;
670 u32 max_mfs;
671
672 mfs = netdev->mtu - (sizeof(struct fcoe_hdr) +
673 sizeof(struct fcoe_crc_eof));
674 max_mfs = BNX2FC_MAX_PAYLOAD + sizeof(struct fc_frame_header);
675 BNX2FC_HBA_DBG(lport, "mfs = %d, max_mfs = %d\n", mfs, max_mfs);
676 if (mfs > max_mfs)
677 mfs = max_mfs;
678
679 /* Adjust mfs to be a multiple of 256 bytes */
680 mfs = (((mfs - sizeof(struct fc_frame_header)) / BNX2FC_MIN_PAYLOAD) *
681 BNX2FC_MIN_PAYLOAD);
682 mfs = mfs + sizeof(struct fc_frame_header);
683
684 BNX2FC_HBA_DBG(lport, "Set MFS = %d\n", mfs);
685 if (fc_set_mfs(lport, mfs))
686 return -EINVAL;
687 return 0;
688 }
689 static void bnx2fc_link_speed_update(struct fc_lport *lport)
690 {
691 struct fcoe_port *port = lport_priv(lport);
692 struct bnx2fc_hba *hba = port->priv;
693 struct net_device *netdev = hba->netdev;
694 struct ethtool_cmd ecmd = { ETHTOOL_GSET };
695
696 if (!dev_ethtool_get_settings(netdev, &ecmd)) {
697 lport->link_supported_speeds &=
698 ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT);
699 if (ecmd.supported & (SUPPORTED_1000baseT_Half |
700 SUPPORTED_1000baseT_Full))
701 lport->link_supported_speeds |= FC_PORTSPEED_1GBIT;
702 if (ecmd.supported & SUPPORTED_10000baseT_Full)
703 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
704
705 if (ecmd.speed == SPEED_1000)
706 lport->link_speed = FC_PORTSPEED_1GBIT;
707 if (ecmd.speed == SPEED_10000)
708 lport->link_speed = FC_PORTSPEED_10GBIT;
709 }
710 return;
711 }
712 static int bnx2fc_link_ok(struct fc_lport *lport)
713 {
714 struct fcoe_port *port = lport_priv(lport);
715 struct bnx2fc_hba *hba = port->priv;
716 struct net_device *dev = hba->phys_dev;
717 int rc = 0;
718
719 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
720 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
721 else {
722 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
723 rc = -1;
724 }
725 return rc;
726 }
727
728 /**
729 * bnx2fc_get_link_state - get network link state
730 *
731 * @hba: adapter instance pointer
732 *
733 * updates adapter structure flag based on netdev state
734 */
735 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
736 {
737 if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state))
738 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
739 else
740 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
741 }
742
743 static int bnx2fc_net_config(struct fc_lport *lport)
744 {
745 struct bnx2fc_hba *hba;
746 struct fcoe_port *port;
747 u64 wwnn, wwpn;
748
749 port = lport_priv(lport);
750 hba = port->priv;
751
752 /* require support for get_pauseparam ethtool op. */
753 if (!hba->phys_dev->ethtool_ops ||
754 !hba->phys_dev->ethtool_ops->get_pauseparam)
755 return -EOPNOTSUPP;
756
757 if (bnx2fc_mfs_update(lport))
758 return -EINVAL;
759
760 skb_queue_head_init(&port->fcoe_pending_queue);
761 port->fcoe_pending_queue_active = 0;
762 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
763
764 bnx2fc_link_speed_update(lport);
765
766 if (!lport->vport) {
767 wwnn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 1, 0);
768 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
769 fc_set_wwnn(lport, wwnn);
770
771 wwpn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 2, 0);
772 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
773 fc_set_wwpn(lport, wwpn);
774 }
775
776 return 0;
777 }
778
779 static void bnx2fc_destroy_timer(unsigned long data)
780 {
781 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
782
783 BNX2FC_HBA_DBG(hba->ctlr.lp, "ERROR:bnx2fc_destroy_timer - "
784 "Destroy compl not received!!\n");
785 hba->flags |= BNX2FC_FLAG_DESTROY_CMPL;
786 wake_up_interruptible(&hba->destroy_wait);
787 }
788
789 /**
790 * bnx2fc_indicate_netevent - Generic netdev event handler
791 *
792 * @context: adapter structure pointer
793 * @event: event type
794 *
795 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
796 * NETDEV_CHANGE_MTU events
797 */
798 static void bnx2fc_indicate_netevent(void *context, unsigned long event)
799 {
800 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
801 struct fc_lport *lport = hba->ctlr.lp;
802 struct fc_lport *vport;
803 u32 link_possible = 1;
804
805 if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
806 BNX2FC_MISC_DBG("driver not ready. event=%s %ld\n",
807 hba->netdev->name, event);
808 return;
809 }
810
811 /*
812 * ASSUMPTION:
813 * indicate_netevent cannot be called from cnic unless bnx2fc
814 * does register_device
815 */
816 BUG_ON(!lport);
817
818 BNX2FC_HBA_DBG(lport, "enter netevent handler - event=%s %ld\n",
819 hba->netdev->name, event);
820
821 switch (event) {
822 case NETDEV_UP:
823 BNX2FC_HBA_DBG(lport, "Port up, adapter_state = %ld\n",
824 hba->adapter_state);
825 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
826 printk(KERN_ERR "indicate_netevent: "\
827 "adapter is not UP!!\n");
828 /* fall thru to update mfs if MTU has changed */
829 case NETDEV_CHANGEMTU:
830 BNX2FC_HBA_DBG(lport, "NETDEV_CHANGEMTU event\n");
831 bnx2fc_mfs_update(lport);
832 mutex_lock(&lport->lp_mutex);
833 list_for_each_entry(vport, &lport->vports, list)
834 bnx2fc_mfs_update(vport);
835 mutex_unlock(&lport->lp_mutex);
836 break;
837
838 case NETDEV_DOWN:
839 BNX2FC_HBA_DBG(lport, "Port down\n");
840 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
841 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
842 link_possible = 0;
843 break;
844
845 case NETDEV_GOING_DOWN:
846 BNX2FC_HBA_DBG(lport, "Port going down\n");
847 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
848 link_possible = 0;
849 break;
850
851 case NETDEV_CHANGE:
852 BNX2FC_HBA_DBG(lport, "NETDEV_CHANGE\n");
853 break;
854
855 default:
856 printk(KERN_ERR PFX "Unkonwn netevent %ld", event);
857 return;
858 }
859
860 bnx2fc_link_speed_update(lport);
861
862 if (link_possible && !bnx2fc_link_ok(lport)) {
863 printk(KERN_ERR "indicate_netevent: call ctlr_link_up\n");
864 fcoe_ctlr_link_up(&hba->ctlr);
865 } else {
866 printk(KERN_ERR "indicate_netevent: call ctlr_link_down\n");
867 if (fcoe_ctlr_link_down(&hba->ctlr)) {
868 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
869 mutex_lock(&lport->lp_mutex);
870 list_for_each_entry(vport, &lport->vports, list)
871 fc_host_port_type(vport->host) =
872 FC_PORTTYPE_UNKNOWN;
873 mutex_unlock(&lport->lp_mutex);
874 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
875 per_cpu_ptr(lport->dev_stats,
876 get_cpu())->LinkFailureCount++;
877 put_cpu();
878 fcoe_clean_pending_queue(lport);
879
880 init_waitqueue_head(&hba->shutdown_wait);
881 BNX2FC_HBA_DBG(lport, "indicate_netevent "
882 "num_ofld_sess = %d\n",
883 hba->num_ofld_sess);
884 hba->wait_for_link_down = 1;
885 BNX2FC_HBA_DBG(lport, "waiting for uploads to "
886 "compl proc = %s\n",
887 current->comm);
888 wait_event_interruptible(hba->shutdown_wait,
889 (hba->num_ofld_sess == 0));
890 BNX2FC_HBA_DBG(lport, "wakeup - num_ofld_sess = %d\n",
891 hba->num_ofld_sess);
892 hba->wait_for_link_down = 0;
893
894 if (signal_pending(current))
895 flush_signals(current);
896 }
897 }
898 }
899
900 static int bnx2fc_libfc_config(struct fc_lport *lport)
901 {
902
903 /* Set the function pointers set by bnx2fc driver */
904 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
905 sizeof(struct libfc_function_template));
906 fc_elsct_init(lport);
907 fc_exch_init(lport);
908 fc_rport_init(lport);
909 fc_disc_init(lport);
910 return 0;
911 }
912
913 static int bnx2fc_em_config(struct fc_lport *lport)
914 {
915 struct fcoe_port *port = lport_priv(lport);
916 struct bnx2fc_hba *hba = port->priv;
917
918 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID,
919 FCOE_MAX_XID, NULL)) {
920 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
921 return -ENOMEM;
922 }
923
924 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID,
925 BNX2FC_MAX_XID);
926
927 if (!hba->cmd_mgr) {
928 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
929 fc_exch_mgr_free(lport);
930 return -ENOMEM;
931 }
932 return 0;
933 }
934
935 static int bnx2fc_lport_config(struct fc_lport *lport)
936 {
937 lport->link_up = 0;
938 lport->qfull = 0;
939 lport->max_retry_count = 3;
940 lport->max_rport_retry_count = 3;
941 lport->e_d_tov = 2 * 1000;
942 lport->r_a_tov = 10 * 1000;
943
944 /* REVISIT: enable when supporting tape devices
945 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
946 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
947 */
948 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS);
949 lport->does_npiv = 1;
950
951 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
952 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
953
954 /* alloc stats structure */
955 if (fc_lport_init_stats(lport))
956 return -ENOMEM;
957
958 /* Finish fc_lport configuration */
959 fc_lport_config(lport);
960
961 return 0;
962 }
963
964 /**
965 * bnx2fc_fip_recv - handle a received FIP frame.
966 *
967 * @skb: the received skb
968 * @dev: associated &net_device
969 * @ptype: the &packet_type structure which was used to register this handler.
970 * @orig_dev: original receive &net_device, in case @ dev is a bond.
971 *
972 * Returns: 0 for success
973 */
974 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
975 struct packet_type *ptype,
976 struct net_device *orig_dev)
977 {
978 struct bnx2fc_hba *hba;
979 hba = container_of(ptype, struct bnx2fc_hba, fip_packet_type);
980 fcoe_ctlr_recv(&hba->ctlr, skb);
981 return 0;
982 }
983
984 /**
985 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
986 *
987 * @fip: FCoE controller.
988 * @old: Unicast MAC address to delete if the MAC is non-zero.
989 * @new: Unicast MAC address to add.
990 *
991 * Remove any previously-set unicast MAC filter.
992 * Add secondary FCoE MAC address filter for our OUI.
993 */
994 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
995 {
996 struct fcoe_port *port = lport_priv(lport);
997
998 memcpy(port->data_src_addr, addr, ETH_ALEN);
999 }
1000
1001 /**
1002 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1003 *
1004 * @lport: libfc port
1005 */
1006 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1007 {
1008 struct fcoe_port *port;
1009
1010 port = (struct fcoe_port *)lport_priv(lport);
1011 return port->data_src_addr;
1012 }
1013
1014 /**
1015 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1016 *
1017 * @fip: FCoE controller.
1018 * @skb: FIP Packet.
1019 */
1020 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1021 {
1022 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1023 dev_queue_xmit(skb);
1024 }
1025
1026 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1027 {
1028 struct Scsi_Host *shost = vport_to_shost(vport);
1029 struct fc_lport *n_port = shost_priv(shost);
1030 struct fcoe_port *port = lport_priv(n_port);
1031 struct bnx2fc_hba *hba = port->priv;
1032 struct net_device *netdev = hba->netdev;
1033 struct fc_lport *vn_port;
1034
1035 if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1036 printk(KERN_ERR PFX "vn ports cannot be created on"
1037 "this hba\n");
1038 return -EIO;
1039 }
1040 mutex_lock(&bnx2fc_dev_lock);
1041 vn_port = bnx2fc_if_create(hba, &vport->dev, 1);
1042 mutex_unlock(&bnx2fc_dev_lock);
1043
1044 if (IS_ERR(vn_port)) {
1045 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1046 netdev->name);
1047 return -EIO;
1048 }
1049
1050 if (disabled) {
1051 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1052 } else {
1053 vn_port->boot_time = jiffies;
1054 fc_lport_init(vn_port);
1055 fc_fabric_login(vn_port);
1056 fc_vport_setlink(vn_port);
1057 }
1058 return 0;
1059 }
1060
1061 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1062 {
1063 struct Scsi_Host *shost = vport_to_shost(vport);
1064 struct fc_lport *n_port = shost_priv(shost);
1065 struct fc_lport *vn_port = vport->dd_data;
1066 struct fcoe_port *port = lport_priv(vn_port);
1067
1068 mutex_lock(&n_port->lp_mutex);
1069 list_del(&vn_port->list);
1070 mutex_unlock(&n_port->lp_mutex);
1071 queue_work(bnx2fc_wq, &port->destroy_work);
1072 return 0;
1073 }
1074
1075 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1076 {
1077 struct fc_lport *lport = vport->dd_data;
1078
1079 if (disable) {
1080 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1081 fc_fabric_logoff(lport);
1082 } else {
1083 lport->boot_time = jiffies;
1084 fc_fabric_login(lport);
1085 fc_vport_setlink(lport);
1086 }
1087 return 0;
1088 }
1089
1090
1091 static int bnx2fc_netdev_setup(struct bnx2fc_hba *hba)
1092 {
1093 struct net_device *netdev = hba->netdev;
1094 struct net_device *physdev = hba->phys_dev;
1095 struct netdev_hw_addr *ha;
1096 int sel_san_mac = 0;
1097
1098 /* Do not support for bonding device */
1099 if ((netdev->priv_flags & IFF_MASTER_ALB) ||
1100 (netdev->priv_flags & IFF_SLAVE_INACTIVE) ||
1101 (netdev->priv_flags & IFF_MASTER_8023AD)) {
1102 return -EOPNOTSUPP;
1103 }
1104
1105 /* setup Source MAC Address */
1106 rcu_read_lock();
1107 for_each_dev_addr(physdev, ha) {
1108 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1109 ha->type);
1110 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1111 ha->addr[1], ha->addr[2], ha->addr[3],
1112 ha->addr[4], ha->addr[5]);
1113
1114 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1115 (is_valid_ether_addr(ha->addr))) {
1116 memcpy(hba->ctlr.ctl_src_addr, ha->addr, ETH_ALEN);
1117 sel_san_mac = 1;
1118 BNX2FC_MISC_DBG("Found SAN MAC\n");
1119 }
1120 }
1121 rcu_read_unlock();
1122
1123 if (!sel_san_mac)
1124 return -ENODEV;
1125
1126 hba->fip_packet_type.func = bnx2fc_fip_recv;
1127 hba->fip_packet_type.type = htons(ETH_P_FIP);
1128 hba->fip_packet_type.dev = netdev;
1129 dev_add_pack(&hba->fip_packet_type);
1130
1131 hba->fcoe_packet_type.func = bnx2fc_rcv;
1132 hba->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1133 hba->fcoe_packet_type.dev = netdev;
1134 dev_add_pack(&hba->fcoe_packet_type);
1135
1136 return 0;
1137 }
1138
1139 static int bnx2fc_attach_transport(void)
1140 {
1141 bnx2fc_transport_template =
1142 fc_attach_transport(&bnx2fc_transport_function);
1143
1144 if (bnx2fc_transport_template == NULL) {
1145 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1146 return -ENODEV;
1147 }
1148
1149 bnx2fc_vport_xport_template =
1150 fc_attach_transport(&bnx2fc_vport_xport_function);
1151 if (bnx2fc_vport_xport_template == NULL) {
1152 printk(KERN_ERR PFX
1153 "Failed to attach FC transport for vport\n");
1154 fc_release_transport(bnx2fc_transport_template);
1155 bnx2fc_transport_template = NULL;
1156 return -ENODEV;
1157 }
1158 return 0;
1159 }
1160 static void bnx2fc_release_transport(void)
1161 {
1162 fc_release_transport(bnx2fc_transport_template);
1163 fc_release_transport(bnx2fc_vport_xport_template);
1164 bnx2fc_transport_template = NULL;
1165 bnx2fc_vport_xport_template = NULL;
1166 }
1167
1168 static void bnx2fc_interface_release(struct kref *kref)
1169 {
1170 struct bnx2fc_hba *hba;
1171 struct net_device *netdev;
1172 struct net_device *phys_dev;
1173
1174 hba = container_of(kref, struct bnx2fc_hba, kref);
1175 BNX2FC_HBA_DBG(hba->ctlr.lp, "Interface is being released\n");
1176
1177 netdev = hba->netdev;
1178 phys_dev = hba->phys_dev;
1179
1180 /* tear-down FIP controller */
1181 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done))
1182 fcoe_ctlr_destroy(&hba->ctlr);
1183
1184 /* Free the command manager */
1185 if (hba->cmd_mgr) {
1186 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1187 hba->cmd_mgr = NULL;
1188 }
1189 dev_put(netdev);
1190 module_put(THIS_MODULE);
1191 }
1192
1193 static inline void bnx2fc_interface_get(struct bnx2fc_hba *hba)
1194 {
1195 kref_get(&hba->kref);
1196 }
1197
1198 static inline void bnx2fc_interface_put(struct bnx2fc_hba *hba)
1199 {
1200 kref_put(&hba->kref, bnx2fc_interface_release);
1201 }
1202 static void bnx2fc_interface_destroy(struct bnx2fc_hba *hba)
1203 {
1204 bnx2fc_unbind_pcidev(hba);
1205 kfree(hba);
1206 }
1207
1208 /**
1209 * bnx2fc_interface_create - create a new fcoe instance
1210 *
1211 * @cnic: pointer to cnic device
1212 *
1213 * Creates a new FCoE instance on the given device which include allocating
1214 * hba structure, scsi_host and lport structures.
1215 */
1216 static struct bnx2fc_hba *bnx2fc_interface_create(struct cnic_dev *cnic)
1217 {
1218 struct bnx2fc_hba *hba;
1219 int rc;
1220
1221 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1222 if (!hba) {
1223 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1224 return NULL;
1225 }
1226 spin_lock_init(&hba->hba_lock);
1227 mutex_init(&hba->hba_mutex);
1228
1229 hba->cnic = cnic;
1230 rc = bnx2fc_bind_pcidev(hba);
1231 if (rc)
1232 goto bind_err;
1233 hba->phys_dev = cnic->netdev;
1234 /* will get overwritten after we do vlan discovery */
1235 hba->netdev = hba->phys_dev;
1236
1237 init_waitqueue_head(&hba->shutdown_wait);
1238 init_waitqueue_head(&hba->destroy_wait);
1239
1240 return hba;
1241 bind_err:
1242 printk(KERN_ERR PFX "create_interface: bind error\n");
1243 kfree(hba);
1244 return NULL;
1245 }
1246
1247 static int bnx2fc_interface_setup(struct bnx2fc_hba *hba,
1248 enum fip_state fip_mode)
1249 {
1250 int rc = 0;
1251 struct net_device *netdev = hba->netdev;
1252 struct fcoe_ctlr *fip = &hba->ctlr;
1253
1254 dev_hold(netdev);
1255 kref_init(&hba->kref);
1256
1257 hba->flags = 0;
1258
1259 /* Initialize FIP */
1260 memset(fip, 0, sizeof(*fip));
1261 fcoe_ctlr_init(fip, fip_mode);
1262 hba->ctlr.send = bnx2fc_fip_send;
1263 hba->ctlr.update_mac = bnx2fc_update_src_mac;
1264 hba->ctlr.get_src_addr = bnx2fc_get_src_mac;
1265 set_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done);
1266
1267 rc = bnx2fc_netdev_setup(hba);
1268 if (rc)
1269 goto setup_err;
1270
1271 hba->next_conn_id = 0;
1272
1273 memset(hba->tgt_ofld_list, 0, sizeof(hba->tgt_ofld_list));
1274 hba->num_ofld_sess = 0;
1275
1276 return 0;
1277
1278 setup_err:
1279 fcoe_ctlr_destroy(&hba->ctlr);
1280 dev_put(netdev);
1281 bnx2fc_interface_put(hba);
1282 return rc;
1283 }
1284
1285 /**
1286 * bnx2fc_if_create - Create FCoE instance on a given interface
1287 *
1288 * @hba: FCoE interface to create a local port on
1289 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1290 * @npiv: Indicates if the port is vport or not
1291 *
1292 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1293 *
1294 * Returns: Allocated fc_lport or an error pointer
1295 */
1296 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_hba *hba,
1297 struct device *parent, int npiv)
1298 {
1299 struct fc_lport *lport = NULL;
1300 struct fcoe_port *port;
1301 struct Scsi_Host *shost;
1302 struct fc_vport *vport = dev_to_vport(parent);
1303 int rc = 0;
1304
1305 /* Allocate Scsi_Host structure */
1306 if (!npiv) {
1307 lport = libfc_host_alloc(&bnx2fc_shost_template,
1308 sizeof(struct fcoe_port));
1309 } else {
1310 lport = libfc_vport_create(vport,
1311 sizeof(struct fcoe_port));
1312 }
1313
1314 if (!lport) {
1315 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1316 return NULL;
1317 }
1318 shost = lport->host;
1319 port = lport_priv(lport);
1320 port->lport = lport;
1321 port->priv = hba;
1322 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1323
1324 /* Configure fcoe_port */
1325 rc = bnx2fc_lport_config(lport);
1326 if (rc)
1327 goto lp_config_err;
1328
1329 if (npiv) {
1330 vport = dev_to_vport(parent);
1331 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1332 vport->node_name, vport->port_name);
1333 fc_set_wwnn(lport, vport->node_name);
1334 fc_set_wwpn(lport, vport->port_name);
1335 }
1336 /* Configure netdev and networking properties of the lport */
1337 rc = bnx2fc_net_config(lport);
1338 if (rc) {
1339 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1340 goto lp_config_err;
1341 }
1342
1343 rc = bnx2fc_shost_config(lport, parent);
1344 if (rc) {
1345 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1346 hba->netdev->name);
1347 goto lp_config_err;
1348 }
1349
1350 /* Initialize the libfc library */
1351 rc = bnx2fc_libfc_config(lport);
1352 if (rc) {
1353 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1354 goto shost_err;
1355 }
1356 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1357
1358 /* Allocate exchange manager */
1359 if (!npiv) {
1360 rc = bnx2fc_em_config(lport);
1361 if (rc) {
1362 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1363 goto shost_err;
1364 }
1365 }
1366
1367 bnx2fc_interface_get(hba);
1368 return lport;
1369
1370 shost_err:
1371 scsi_remove_host(shost);
1372 lp_config_err:
1373 scsi_host_put(lport->host);
1374 return NULL;
1375 }
1376
1377 static void bnx2fc_netdev_cleanup(struct bnx2fc_hba *hba)
1378 {
1379 /* Dont listen for Ethernet packets anymore */
1380 __dev_remove_pack(&hba->fcoe_packet_type);
1381 __dev_remove_pack(&hba->fip_packet_type);
1382 synchronize_net();
1383 }
1384
1385 static void bnx2fc_if_destroy(struct fc_lport *lport)
1386 {
1387 struct fcoe_port *port = lport_priv(lport);
1388 struct bnx2fc_hba *hba = port->priv;
1389
1390 BNX2FC_HBA_DBG(hba->ctlr.lp, "ENTERED bnx2fc_if_destroy\n");
1391 /* Stop the transmit retry timer */
1392 del_timer_sync(&port->timer);
1393
1394 /* Free existing transmit skbs */
1395 fcoe_clean_pending_queue(lport);
1396
1397 bnx2fc_interface_put(hba);
1398
1399 /* Free queued packets for the receive thread */
1400 bnx2fc_clean_rx_queue(lport);
1401
1402 /* Detach from scsi-ml */
1403 fc_remove_host(lport->host);
1404 scsi_remove_host(lport->host);
1405
1406 /*
1407 * Note that only the physical lport will have the exchange manager.
1408 * for vports, this function is NOP
1409 */
1410 fc_exch_mgr_free(lport);
1411
1412 /* Free memory used by statistical counters */
1413 fc_lport_free_stats(lport);
1414
1415 /* Release Scsi_Host */
1416 scsi_host_put(lport->host);
1417 }
1418
1419 /**
1420 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1421 *
1422 * @buffer: The name of the Ethernet interface to be destroyed
1423 * @kp: The associated kernel parameter
1424 *
1425 * Called from sysfs.
1426 *
1427 * Returns: 0 for success
1428 */
1429 static int bnx2fc_destroy(struct net_device *netdev)
1430 {
1431 struct bnx2fc_hba *hba = NULL;
1432 struct net_device *phys_dev;
1433 int rc = 0;
1434
1435 rtnl_lock();
1436
1437 mutex_lock(&bnx2fc_dev_lock);
1438 #ifdef CONFIG_SCSI_BNX2X_FCOE_MODULE
1439 if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1440 rc = -ENODEV;
1441 goto netdev_err;
1442 }
1443 #endif
1444 /* obtain physical netdev */
1445 if (netdev->priv_flags & IFF_802_1Q_VLAN)
1446 phys_dev = vlan_dev_real_dev(netdev);
1447 else {
1448 printk(KERN_ERR PFX "Not a vlan device\n");
1449 rc = -ENODEV;
1450 goto netdev_err;
1451 }
1452
1453 hba = bnx2fc_hba_lookup(phys_dev);
1454 if (!hba || !hba->ctlr.lp) {
1455 rc = -ENODEV;
1456 printk(KERN_ERR PFX "bnx2fc_destroy: hba or lport not found\n");
1457 goto netdev_err;
1458 }
1459
1460 if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1461 printk(KERN_ERR PFX "bnx2fc_destroy: Create not called\n");
1462 goto netdev_err;
1463 }
1464
1465 bnx2fc_netdev_cleanup(hba);
1466
1467 bnx2fc_stop(hba);
1468
1469 bnx2fc_if_destroy(hba->ctlr.lp);
1470
1471 destroy_workqueue(hba->timer_work_queue);
1472
1473 if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done))
1474 bnx2fc_fw_destroy(hba);
1475
1476 clear_bit(BNX2FC_CREATE_DONE, &hba->init_done);
1477 netdev_err:
1478 mutex_unlock(&bnx2fc_dev_lock);
1479 rtnl_unlock();
1480 return rc;
1481 }
1482
1483 static void bnx2fc_destroy_work(struct work_struct *work)
1484 {
1485 struct fcoe_port *port;
1486 struct fc_lport *lport;
1487
1488 port = container_of(work, struct fcoe_port, destroy_work);
1489 lport = port->lport;
1490
1491 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1492
1493 bnx2fc_port_shutdown(lport);
1494 rtnl_lock();
1495 mutex_lock(&bnx2fc_dev_lock);
1496 bnx2fc_if_destroy(lport);
1497 mutex_unlock(&bnx2fc_dev_lock);
1498 rtnl_unlock();
1499 }
1500
1501 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1502 {
1503 bnx2fc_free_fw_resc(hba);
1504 bnx2fc_free_task_ctx(hba);
1505 }
1506
1507 /**
1508 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1509 * pci structure
1510 *
1511 * @hba: Adapter instance
1512 */
1513 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1514 {
1515 if (bnx2fc_setup_task_ctx(hba))
1516 goto mem_err;
1517
1518 if (bnx2fc_setup_fw_resc(hba))
1519 goto mem_err;
1520
1521 return 0;
1522 mem_err:
1523 bnx2fc_unbind_adapter_devices(hba);
1524 return -ENOMEM;
1525 }
1526
1527 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1528 {
1529 struct cnic_dev *cnic;
1530
1531 if (!hba->cnic) {
1532 printk(KERN_ERR PFX "cnic is NULL\n");
1533 return -ENODEV;
1534 }
1535 cnic = hba->cnic;
1536 hba->pcidev = cnic->pcidev;
1537 if (hba->pcidev)
1538 pci_dev_get(hba->pcidev);
1539
1540 return 0;
1541 }
1542
1543 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1544 {
1545 if (hba->pcidev)
1546 pci_dev_put(hba->pcidev);
1547 hba->pcidev = NULL;
1548 }
1549
1550
1551
1552 /**
1553 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1554 *
1555 * @handle: transport handle pointing to adapter struture
1556 *
1557 * This function maps adapter structure to pcidev structure and initiates
1558 * firmware handshake to enable/initialize on-chip FCoE components.
1559 * This bnx2fc - cnic interface api callback is used after following
1560 * conditions are met -
1561 * a) underlying network interface is up (marked by event NETDEV_UP
1562 * from netdev
1563 * b) bnx2fc adatper structure is registered.
1564 */
1565 static void bnx2fc_ulp_start(void *handle)
1566 {
1567 struct bnx2fc_hba *hba = handle;
1568 struct fc_lport *lport = hba->ctlr.lp;
1569
1570 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1571 mutex_lock(&bnx2fc_dev_lock);
1572
1573 if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done))
1574 goto start_disc;
1575
1576 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done))
1577 bnx2fc_fw_init(hba);
1578
1579 start_disc:
1580 mutex_unlock(&bnx2fc_dev_lock);
1581
1582 BNX2FC_MISC_DBG("bnx2fc started.\n");
1583
1584 /* Kick off Fabric discovery*/
1585 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1586 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1587 lport->tt.frame_send = bnx2fc_xmit;
1588 bnx2fc_start_disc(hba);
1589 }
1590 }
1591
1592 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1593 {
1594 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1595 fc_fabric_logoff(lport);
1596 fc_lport_destroy(lport);
1597 }
1598
1599 static void bnx2fc_stop(struct bnx2fc_hba *hba)
1600 {
1601 struct fc_lport *lport;
1602 struct fc_lport *vport;
1603
1604 BNX2FC_MISC_DBG("ENTERED %s - init_done = %ld\n", __func__,
1605 hba->init_done);
1606 if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done) &&
1607 test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1608 lport = hba->ctlr.lp;
1609 bnx2fc_port_shutdown(lport);
1610 BNX2FC_HBA_DBG(lport, "bnx2fc_stop: waiting for %d "
1611 "offloaded sessions\n",
1612 hba->num_ofld_sess);
1613 wait_event_interruptible(hba->shutdown_wait,
1614 (hba->num_ofld_sess == 0));
1615 mutex_lock(&lport->lp_mutex);
1616 list_for_each_entry(vport, &lport->vports, list)
1617 fc_host_port_type(vport->host) = FC_PORTTYPE_UNKNOWN;
1618 mutex_unlock(&lport->lp_mutex);
1619 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1620 fcoe_ctlr_link_down(&hba->ctlr);
1621 fcoe_clean_pending_queue(lport);
1622
1623 mutex_lock(&hba->hba_mutex);
1624 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1625 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
1626
1627 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1628 mutex_unlock(&hba->hba_mutex);
1629 }
1630 }
1631
1632 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1633 {
1634 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1635 int rc = -1;
1636 int i = HZ;
1637
1638 rc = bnx2fc_bind_adapter_devices(hba);
1639 if (rc) {
1640 printk(KERN_ALERT PFX
1641 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1642 goto err_out;
1643 }
1644
1645 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1646 if (rc) {
1647 printk(KERN_ALERT PFX
1648 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1649 goto err_unbind;
1650 }
1651
1652 /*
1653 * Wait until the adapter init message is complete, and adapter
1654 * state is UP.
1655 */
1656 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1657 msleep(BNX2FC_INIT_POLL_TIME);
1658
1659 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1660 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1661 "Ignoring...\n",
1662 hba->cnic->netdev->name);
1663 rc = -1;
1664 goto err_unbind;
1665 }
1666
1667
1668 /* Mark HBA to indicate that the FW INIT is done */
1669 set_bit(BNX2FC_FW_INIT_DONE, &hba->init_done);
1670 return 0;
1671
1672 err_unbind:
1673 bnx2fc_unbind_adapter_devices(hba);
1674 err_out:
1675 return rc;
1676 }
1677
1678 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1679 {
1680 if (test_and_clear_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1681 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1682 init_timer(&hba->destroy_timer);
1683 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1684 jiffies;
1685 hba->destroy_timer.function = bnx2fc_destroy_timer;
1686 hba->destroy_timer.data = (unsigned long)hba;
1687 add_timer(&hba->destroy_timer);
1688 wait_event_interruptible(hba->destroy_wait,
1689 (hba->flags &
1690 BNX2FC_FLAG_DESTROY_CMPL));
1691 /* This should never happen */
1692 if (signal_pending(current))
1693 flush_signals(current);
1694
1695 del_timer_sync(&hba->destroy_timer);
1696 }
1697 bnx2fc_unbind_adapter_devices(hba);
1698 }
1699 }
1700
1701 /**
1702 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1703 *
1704 * @handle: transport handle pointing to adapter structure
1705 *
1706 * Driver checks if adapter is already in shutdown mode, if not start
1707 * the shutdown process.
1708 */
1709 static void bnx2fc_ulp_stop(void *handle)
1710 {
1711 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)handle;
1712
1713 printk(KERN_ERR "ULP_STOP\n");
1714
1715 mutex_lock(&bnx2fc_dev_lock);
1716 bnx2fc_stop(hba);
1717 bnx2fc_fw_destroy(hba);
1718 mutex_unlock(&bnx2fc_dev_lock);
1719 }
1720
1721 static void bnx2fc_start_disc(struct bnx2fc_hba *hba)
1722 {
1723 struct fc_lport *lport;
1724 int wait_cnt = 0;
1725
1726 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1727 /* Kick off FIP/FLOGI */
1728 if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1729 printk(KERN_ERR PFX "Init not done yet\n");
1730 return;
1731 }
1732
1733 lport = hba->ctlr.lp;
1734 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1735
1736 if (!bnx2fc_link_ok(lport)) {
1737 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1738 fcoe_ctlr_link_up(&hba->ctlr);
1739 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1740 set_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1741 }
1742
1743 /* wait for the FCF to be selected before issuing FLOGI */
1744 while (!hba->ctlr.sel_fcf) {
1745 msleep(250);
1746 /* give up after 3 secs */
1747 if (++wait_cnt > 12)
1748 break;
1749 }
1750 fc_lport_init(lport);
1751 fc_fabric_login(lport);
1752 }
1753
1754
1755 /**
1756 * bnx2fc_ulp_init - Initialize an adapter instance
1757 *
1758 * @dev : cnic device handle
1759 * Called from cnic_register_driver() context to initialize all
1760 * enumerated cnic devices. This routine allocates adapter structure
1761 * and other device specific resources.
1762 */
1763 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1764 {
1765 struct bnx2fc_hba *hba;
1766 int rc = 0;
1767
1768 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1769 /* bnx2fc works only when bnx2x is loaded */
1770 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1771 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1772 " flags: %lx\n",
1773 dev->netdev->name, dev->flags);
1774 return;
1775 }
1776
1777 /* Configure FCoE interface */
1778 hba = bnx2fc_interface_create(dev);
1779 if (!hba) {
1780 printk(KERN_ERR PFX "hba initialization failed\n");
1781 return;
1782 }
1783
1784 /* Add HBA to the adapter list */
1785 mutex_lock(&bnx2fc_dev_lock);
1786 list_add_tail(&hba->link, &adapter_list);
1787 adapter_count++;
1788 mutex_unlock(&bnx2fc_dev_lock);
1789
1790 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1791 rc = dev->register_device(dev, CNIC_ULP_FCOE,
1792 (void *) hba);
1793 if (rc)
1794 printk(KERN_ALERT PFX "register_device failed, rc = %d\n", rc);
1795 else
1796 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1797 }
1798
1799
1800 static int bnx2fc_disable(struct net_device *netdev)
1801 {
1802 struct bnx2fc_hba *hba;
1803 struct net_device *phys_dev;
1804 struct ethtool_drvinfo drvinfo;
1805 int rc = 0;
1806
1807 rtnl_lock();
1808
1809 mutex_lock(&bnx2fc_dev_lock);
1810
1811 if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1812 rc = -ENODEV;
1813 goto nodev;
1814 }
1815
1816 /* obtain physical netdev */
1817 if (netdev->priv_flags & IFF_802_1Q_VLAN)
1818 phys_dev = vlan_dev_real_dev(netdev);
1819 else {
1820 printk(KERN_ERR PFX "Not a vlan device\n");
1821 rc = -ENODEV;
1822 goto nodev;
1823 }
1824
1825 /* verify if the physical device is a netxtreme2 device */
1826 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1827 memset(&drvinfo, 0, sizeof(drvinfo));
1828 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1829 if (strcmp(drvinfo.driver, "bnx2x")) {
1830 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1831 rc = -ENODEV;
1832 goto nodev;
1833 }
1834 } else {
1835 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1836 rc = -ENODEV;
1837 goto nodev;
1838 }
1839
1840 printk(KERN_ERR PFX "phys_dev is netxtreme2 device\n");
1841
1842 /* obtain hba and initialize rest of the structure */
1843 hba = bnx2fc_hba_lookup(phys_dev);
1844 if (!hba || !hba->ctlr.lp) {
1845 rc = -ENODEV;
1846 printk(KERN_ERR PFX "bnx2fc_disable: hba or lport not found\n");
1847 } else {
1848 fcoe_ctlr_link_down(&hba->ctlr);
1849 fcoe_clean_pending_queue(hba->ctlr.lp);
1850 }
1851
1852 nodev:
1853 mutex_unlock(&bnx2fc_dev_lock);
1854 rtnl_unlock();
1855 return rc;
1856 }
1857
1858
1859 static int bnx2fc_enable(struct net_device *netdev)
1860 {
1861 struct bnx2fc_hba *hba;
1862 struct net_device *phys_dev;
1863 struct ethtool_drvinfo drvinfo;
1864 int rc = 0;
1865
1866 rtnl_lock();
1867
1868 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1869 mutex_lock(&bnx2fc_dev_lock);
1870
1871 if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1872 rc = -ENODEV;
1873 goto nodev;
1874 }
1875
1876 /* obtain physical netdev */
1877 if (netdev->priv_flags & IFF_802_1Q_VLAN)
1878 phys_dev = vlan_dev_real_dev(netdev);
1879 else {
1880 printk(KERN_ERR PFX "Not a vlan device\n");
1881 rc = -ENODEV;
1882 goto nodev;
1883 }
1884 /* verify if the physical device is a netxtreme2 device */
1885 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1886 memset(&drvinfo, 0, sizeof(drvinfo));
1887 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1888 if (strcmp(drvinfo.driver, "bnx2x")) {
1889 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1890 rc = -ENODEV;
1891 goto nodev;
1892 }
1893 } else {
1894 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1895 rc = -ENODEV;
1896 goto nodev;
1897 }
1898
1899 /* obtain hba and initialize rest of the structure */
1900 hba = bnx2fc_hba_lookup(phys_dev);
1901 if (!hba || !hba->ctlr.lp) {
1902 rc = -ENODEV;
1903 printk(KERN_ERR PFX "bnx2fc_enable: hba or lport not found\n");
1904 } else if (!bnx2fc_link_ok(hba->ctlr.lp))
1905 fcoe_ctlr_link_up(&hba->ctlr);
1906
1907 nodev:
1908 mutex_unlock(&bnx2fc_dev_lock);
1909 rtnl_unlock();
1910 return rc;
1911 }
1912
1913 /**
1914 * bnx2fc_create - Create bnx2fc FCoE interface
1915 *
1916 * @buffer: The name of Ethernet interface to create on
1917 * @kp: The associated kernel param
1918 *
1919 * Called from sysfs.
1920 *
1921 * Returns: 0 for success
1922 */
1923 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
1924 {
1925 struct bnx2fc_hba *hba;
1926 struct net_device *phys_dev;
1927 struct fc_lport *lport;
1928 struct ethtool_drvinfo drvinfo;
1929 int rc = 0;
1930 int vlan_id;
1931
1932 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
1933 if (fip_mode != FIP_MODE_FABRIC) {
1934 printk(KERN_ERR "fip mode not FABRIC\n");
1935 return -EIO;
1936 }
1937
1938 rtnl_lock();
1939
1940 mutex_lock(&bnx2fc_dev_lock);
1941
1942 #ifdef CONFIG_SCSI_BNX2X_FCOE_MODULE
1943 if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1944 rc = -ENODEV;
1945 goto mod_err;
1946 }
1947 #endif
1948
1949 if (!try_module_get(THIS_MODULE)) {
1950 rc = -EINVAL;
1951 goto mod_err;
1952 }
1953
1954 /* obtain physical netdev */
1955 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
1956 phys_dev = vlan_dev_real_dev(netdev);
1957 vlan_id = vlan_dev_vlan_id(netdev);
1958 } else {
1959 printk(KERN_ERR PFX "Not a vlan device\n");
1960 rc = -EINVAL;
1961 goto netdev_err;
1962 }
1963 /* verify if the physical device is a netxtreme2 device */
1964 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1965 memset(&drvinfo, 0, sizeof(drvinfo));
1966 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1967 if (strcmp(drvinfo.driver, "bnx2x")) {
1968 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1969 rc = -EINVAL;
1970 goto netdev_err;
1971 }
1972 } else {
1973 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1974 rc = -EINVAL;
1975 goto netdev_err;
1976 }
1977
1978 /* obtain hba and initialize rest of the structure */
1979 hba = bnx2fc_hba_lookup(phys_dev);
1980 if (!hba) {
1981 rc = -ENODEV;
1982 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
1983 goto netdev_err;
1984 }
1985
1986 if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1987 rc = bnx2fc_fw_init(hba);
1988 if (rc)
1989 goto netdev_err;
1990 }
1991
1992 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1993 rc = -EEXIST;
1994 goto netdev_err;
1995 }
1996
1997 /* update netdev with vlan netdev */
1998 hba->netdev = netdev;
1999 hba->vlan_id = vlan_id;
2000 hba->vlan_enabled = 1;
2001
2002 rc = bnx2fc_interface_setup(hba, fip_mode);
2003 if (rc) {
2004 printk(KERN_ERR PFX "bnx2fc_interface_setup failed\n");
2005 goto ifput_err;
2006 }
2007
2008 hba->timer_work_queue =
2009 create_singlethread_workqueue("bnx2fc_timer_wq");
2010 if (!hba->timer_work_queue) {
2011 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2012 rc = -EINVAL;
2013 goto ifput_err;
2014 }
2015
2016 lport = bnx2fc_if_create(hba, &hba->pcidev->dev, 0);
2017 if (!lport) {
2018 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2019 netdev->name);
2020 bnx2fc_netdev_cleanup(hba);
2021 rc = -EINVAL;
2022 goto if_create_err;
2023 }
2024
2025 lport->boot_time = jiffies;
2026
2027 /* Make this master N_port */
2028 hba->ctlr.lp = lport;
2029
2030 set_bit(BNX2FC_CREATE_DONE, &hba->init_done);
2031 printk(KERN_ERR PFX "create: START DISC\n");
2032 bnx2fc_start_disc(hba);
2033 /*
2034 * Release from kref_init in bnx2fc_interface_setup, on success
2035 * lport should be holding a reference taken in bnx2fc_if_create
2036 */
2037 bnx2fc_interface_put(hba);
2038 /* put netdev that was held while calling dev_get_by_name */
2039 mutex_unlock(&bnx2fc_dev_lock);
2040 rtnl_unlock();
2041 return 0;
2042
2043 if_create_err:
2044 destroy_workqueue(hba->timer_work_queue);
2045 ifput_err:
2046 bnx2fc_interface_put(hba);
2047 netdev_err:
2048 module_put(THIS_MODULE);
2049 mod_err:
2050 mutex_unlock(&bnx2fc_dev_lock);
2051 rtnl_unlock();
2052 return rc;
2053 }
2054
2055 /**
2056 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc adapter instance
2057 *
2058 * @cnic: Pointer to cnic device instance
2059 *
2060 **/
2061 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2062 {
2063 struct list_head *list;
2064 struct list_head *temp;
2065 struct bnx2fc_hba *hba;
2066
2067 /* Called with bnx2fc_dev_lock held */
2068 list_for_each_safe(list, temp, &adapter_list) {
2069 hba = (struct bnx2fc_hba *)list;
2070 if (hba->cnic == cnic)
2071 return hba;
2072 }
2073 return NULL;
2074 }
2075
2076 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev)
2077 {
2078 struct list_head *list;
2079 struct list_head *temp;
2080 struct bnx2fc_hba *hba;
2081
2082 /* Called with bnx2fc_dev_lock held */
2083 list_for_each_safe(list, temp, &adapter_list) {
2084 hba = (struct bnx2fc_hba *)list;
2085 if (hba->phys_dev == phys_dev)
2086 return hba;
2087 }
2088 printk(KERN_ERR PFX "hba_lookup: hba NULL\n");
2089 return NULL;
2090 }
2091
2092 /**
2093 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2094 *
2095 * @dev cnic device handle
2096 */
2097 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2098 {
2099 struct bnx2fc_hba *hba;
2100
2101 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2102
2103 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2104 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2105 dev->netdev->name, dev->flags);
2106 return;
2107 }
2108
2109 mutex_lock(&bnx2fc_dev_lock);
2110 hba = bnx2fc_find_hba_for_cnic(dev);
2111 if (!hba) {
2112 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2113 dev);
2114 mutex_unlock(&bnx2fc_dev_lock);
2115 return;
2116 }
2117
2118 list_del_init(&hba->link);
2119 adapter_count--;
2120
2121 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
2122 /* destroy not called yet, move to quiesced list */
2123 bnx2fc_netdev_cleanup(hba);
2124 bnx2fc_if_destroy(hba->ctlr.lp);
2125 }
2126 mutex_unlock(&bnx2fc_dev_lock);
2127
2128 bnx2fc_ulp_stop(hba);
2129 /* unregister cnic device */
2130 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2131 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2132 bnx2fc_interface_destroy(hba);
2133 }
2134
2135 /**
2136 * bnx2fc_fcoe_reset - Resets the fcoe
2137 *
2138 * @shost: shost the reset is from
2139 *
2140 * Returns: always 0
2141 */
2142 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2143 {
2144 struct fc_lport *lport = shost_priv(shost);
2145 fc_lport_reset(lport);
2146 return 0;
2147 }
2148
2149
2150 static bool bnx2fc_match(struct net_device *netdev)
2151 {
2152 mutex_lock(&bnx2fc_dev_lock);
2153 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2154 struct net_device *phys_dev = vlan_dev_real_dev(netdev);
2155
2156 if (bnx2fc_hba_lookup(phys_dev)) {
2157 mutex_unlock(&bnx2fc_dev_lock);
2158 return true;
2159 }
2160 }
2161 mutex_unlock(&bnx2fc_dev_lock);
2162 return false;
2163 }
2164
2165
2166 static struct fcoe_transport bnx2fc_transport = {
2167 .name = {"bnx2fc"},
2168 .attached = false,
2169 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2170 .match = bnx2fc_match,
2171 .create = bnx2fc_create,
2172 .destroy = bnx2fc_destroy,
2173 .enable = bnx2fc_enable,
2174 .disable = bnx2fc_disable,
2175 };
2176
2177 /**
2178 * bnx2fc_percpu_thread_create - Create a receive thread for an
2179 * online CPU
2180 *
2181 * @cpu: cpu index for the online cpu
2182 */
2183 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2184 {
2185 struct bnx2fc_percpu_s *p;
2186 struct task_struct *thread;
2187
2188 p = &per_cpu(bnx2fc_percpu, cpu);
2189
2190 thread = kthread_create(bnx2fc_percpu_io_thread,
2191 (void *)p,
2192 "bnx2fc_thread/%d", cpu);
2193 /* bind thread to the cpu */
2194 if (likely(!IS_ERR(p->iothread))) {
2195 kthread_bind(thread, cpu);
2196 p->iothread = thread;
2197 wake_up_process(thread);
2198 }
2199 }
2200
2201 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2202 {
2203 struct bnx2fc_percpu_s *p;
2204 struct task_struct *thread;
2205 struct bnx2fc_work *work, *tmp;
2206 LIST_HEAD(work_list);
2207
2208 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2209
2210 /* Prevent any new work from being queued for this CPU */
2211 p = &per_cpu(bnx2fc_percpu, cpu);
2212 spin_lock_bh(&p->fp_work_lock);
2213 thread = p->iothread;
2214 p->iothread = NULL;
2215
2216
2217 /* Free all work in the list */
2218 list_for_each_entry_safe(work, tmp, &work_list, list) {
2219 list_del_init(&work->list);
2220 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2221 kfree(work);
2222 }
2223
2224 spin_unlock_bh(&p->fp_work_lock);
2225
2226 if (thread)
2227 kthread_stop(thread);
2228 }
2229
2230 /**
2231 * bnx2fc_cpu_callback - Handler for CPU hotplug events
2232 *
2233 * @nfb: The callback data block
2234 * @action: The event triggering the callback
2235 * @hcpu: The index of the CPU that the event is for
2236 *
2237 * This creates or destroys per-CPU data for fcoe
2238 *
2239 * Returns NOTIFY_OK always.
2240 */
2241 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2242 unsigned long action, void *hcpu)
2243 {
2244 unsigned cpu = (unsigned long)hcpu;
2245
2246 switch (action) {
2247 case CPU_ONLINE:
2248 case CPU_ONLINE_FROZEN:
2249 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2250 bnx2fc_percpu_thread_create(cpu);
2251 break;
2252 case CPU_DEAD:
2253 case CPU_DEAD_FROZEN:
2254 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2255 bnx2fc_percpu_thread_destroy(cpu);
2256 break;
2257 default:
2258 break;
2259 }
2260 return NOTIFY_OK;
2261 }
2262
2263 /**
2264 * bnx2fc_mod_init - module init entry point
2265 *
2266 * Initialize driver wide global data structures, and register
2267 * with cnic module
2268 **/
2269 static int __init bnx2fc_mod_init(void)
2270 {
2271 struct fcoe_percpu_s *bg;
2272 struct task_struct *l2_thread;
2273 int rc = 0;
2274 unsigned int cpu = 0;
2275 struct bnx2fc_percpu_s *p;
2276
2277 printk(KERN_INFO PFX "%s", version);
2278
2279 /* register as a fcoe transport */
2280 rc = fcoe_transport_attach(&bnx2fc_transport);
2281 if (rc) {
2282 printk(KERN_ERR "failed to register an fcoe transport, check "
2283 "if libfcoe is loaded\n");
2284 goto out;
2285 }
2286
2287 INIT_LIST_HEAD(&adapter_list);
2288 mutex_init(&bnx2fc_dev_lock);
2289 adapter_count = 0;
2290
2291 /* Attach FC transport template */
2292 rc = bnx2fc_attach_transport();
2293 if (rc)
2294 goto detach_ft;
2295
2296 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2297 if (!bnx2fc_wq) {
2298 rc = -ENOMEM;
2299 goto release_bt;
2300 }
2301
2302 bg = &bnx2fc_global;
2303 skb_queue_head_init(&bg->fcoe_rx_list);
2304 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2305 (void *)bg,
2306 "bnx2fc_l2_thread");
2307 if (IS_ERR(l2_thread)) {
2308 rc = PTR_ERR(l2_thread);
2309 goto free_wq;
2310 }
2311 wake_up_process(l2_thread);
2312 spin_lock_bh(&bg->fcoe_rx_list.lock);
2313 bg->thread = l2_thread;
2314 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2315
2316 for_each_possible_cpu(cpu) {
2317 p = &per_cpu(bnx2fc_percpu, cpu);
2318 INIT_LIST_HEAD(&p->work_list);
2319 spin_lock_init(&p->fp_work_lock);
2320 }
2321
2322 for_each_online_cpu(cpu) {
2323 bnx2fc_percpu_thread_create(cpu);
2324 }
2325
2326 /* Initialize per CPU interrupt thread */
2327 register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2328
2329 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2330
2331 return 0;
2332
2333 free_wq:
2334 destroy_workqueue(bnx2fc_wq);
2335 release_bt:
2336 bnx2fc_release_transport();
2337 detach_ft:
2338 fcoe_transport_detach(&bnx2fc_transport);
2339 out:
2340 return rc;
2341 }
2342
2343 static void __exit bnx2fc_mod_exit(void)
2344 {
2345 LIST_HEAD(to_be_deleted);
2346 struct bnx2fc_hba *hba, *next;
2347 struct fcoe_percpu_s *bg;
2348 struct task_struct *l2_thread;
2349 struct sk_buff *skb;
2350 unsigned int cpu = 0;
2351
2352 /*
2353 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2354 * it will have higher precedence than bnx2fc_dev_lock.
2355 * unregister_device() cannot be called with bnx2fc_dev_lock
2356 * held.
2357 */
2358 mutex_lock(&bnx2fc_dev_lock);
2359 list_splice(&adapter_list, &to_be_deleted);
2360 INIT_LIST_HEAD(&adapter_list);
2361 adapter_count = 0;
2362 mutex_unlock(&bnx2fc_dev_lock);
2363
2364 /* Unregister with cnic */
2365 list_for_each_entry_safe(hba, next, &to_be_deleted, link) {
2366 list_del_init(&hba->link);
2367 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p, kref = %d\n",
2368 hba, atomic_read(&hba->kref.refcount));
2369 bnx2fc_ulp_stop(hba);
2370 /* unregister cnic device */
2371 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2372 &hba->reg_with_cnic))
2373 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2374 bnx2fc_interface_destroy(hba);
2375 }
2376 cnic_unregister_driver(CNIC_ULP_FCOE);
2377
2378 /* Destroy global thread */
2379 bg = &bnx2fc_global;
2380 spin_lock_bh(&bg->fcoe_rx_list.lock);
2381 l2_thread = bg->thread;
2382 bg->thread = NULL;
2383 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2384 kfree_skb(skb);
2385
2386 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2387
2388 if (l2_thread)
2389 kthread_stop(l2_thread);
2390
2391 unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2392
2393 /* Destroy per cpu threads */
2394 for_each_online_cpu(cpu) {
2395 bnx2fc_percpu_thread_destroy(cpu);
2396 }
2397
2398 destroy_workqueue(bnx2fc_wq);
2399 /*
2400 * detach from scsi transport
2401 * must happen after all destroys are done
2402 */
2403 bnx2fc_release_transport();
2404
2405 /* detach from fcoe transport */
2406 fcoe_transport_detach(&bnx2fc_transport);
2407 }
2408
2409 module_init(bnx2fc_mod_init);
2410 module_exit(bnx2fc_mod_exit);
2411
2412 static struct fc_function_template bnx2fc_transport_function = {
2413 .show_host_node_name = 1,
2414 .show_host_port_name = 1,
2415 .show_host_supported_classes = 1,
2416 .show_host_supported_fc4s = 1,
2417 .show_host_active_fc4s = 1,
2418 .show_host_maxframe_size = 1,
2419
2420 .show_host_port_id = 1,
2421 .show_host_supported_speeds = 1,
2422 .get_host_speed = fc_get_host_speed,
2423 .show_host_speed = 1,
2424 .show_host_port_type = 1,
2425 .get_host_port_state = fc_get_host_port_state,
2426 .show_host_port_state = 1,
2427 .show_host_symbolic_name = 1,
2428
2429 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2430 sizeof(struct bnx2fc_rport)),
2431 .show_rport_maxframe_size = 1,
2432 .show_rport_supported_classes = 1,
2433
2434 .show_host_fabric_name = 1,
2435 .show_starget_node_name = 1,
2436 .show_starget_port_name = 1,
2437 .show_starget_port_id = 1,
2438 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2439 .show_rport_dev_loss_tmo = 1,
2440 .get_fc_host_stats = bnx2fc_get_host_stats,
2441
2442 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2443
2444 .terminate_rport_io = fc_rport_terminate_io,
2445
2446 .vport_create = bnx2fc_vport_create,
2447 .vport_delete = bnx2fc_vport_destroy,
2448 .vport_disable = bnx2fc_vport_disable,
2449 };
2450
2451 static struct fc_function_template bnx2fc_vport_xport_function = {
2452 .show_host_node_name = 1,
2453 .show_host_port_name = 1,
2454 .show_host_supported_classes = 1,
2455 .show_host_supported_fc4s = 1,
2456 .show_host_active_fc4s = 1,
2457 .show_host_maxframe_size = 1,
2458
2459 .show_host_port_id = 1,
2460 .show_host_supported_speeds = 1,
2461 .get_host_speed = fc_get_host_speed,
2462 .show_host_speed = 1,
2463 .show_host_port_type = 1,
2464 .get_host_port_state = fc_get_host_port_state,
2465 .show_host_port_state = 1,
2466 .show_host_symbolic_name = 1,
2467
2468 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2469 sizeof(struct bnx2fc_rport)),
2470 .show_rport_maxframe_size = 1,
2471 .show_rport_supported_classes = 1,
2472
2473 .show_host_fabric_name = 1,
2474 .show_starget_node_name = 1,
2475 .show_starget_port_name = 1,
2476 .show_starget_port_id = 1,
2477 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2478 .show_rport_dev_loss_tmo = 1,
2479 .get_fc_host_stats = fc_get_host_stats,
2480 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2481 .terminate_rport_io = fc_rport_terminate_io,
2482 };
2483
2484 /**
2485 * scsi_host_template structure used while registering with SCSI-ml
2486 */
2487 static struct scsi_host_template bnx2fc_shost_template = {
2488 .module = THIS_MODULE,
2489 .name = "Broadcom Offload FCoE Initiator",
2490 .queuecommand = bnx2fc_queuecommand,
2491 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2492 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2493 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2494 .eh_host_reset_handler = fc_eh_host_reset,
2495 .slave_alloc = fc_slave_alloc,
2496 .change_queue_depth = fc_change_queue_depth,
2497 .change_queue_type = fc_change_queue_type,
2498 .this_id = -1,
2499 .cmd_per_lun = 3,
2500 .can_queue = (BNX2FC_MAX_OUTSTANDING_CMNDS/2),
2501 .use_clustering = ENABLE_CLUSTERING,
2502 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2503 .max_sectors = 512,
2504 };
2505
2506 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2507 .frame_send = bnx2fc_xmit,
2508 .elsct_send = bnx2fc_elsct_send,
2509 .fcp_abort_io = bnx2fc_abort_io,
2510 .fcp_cleanup = bnx2fc_cleanup,
2511 .rport_event_callback = bnx2fc_rport_event_handler,
2512 };
2513
2514 /**
2515 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2516 * structure carrying callback function pointers
2517 */
2518 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2519 .owner = THIS_MODULE,
2520 .cnic_init = bnx2fc_ulp_init,
2521 .cnic_exit = bnx2fc_ulp_exit,
2522 .cnic_start = bnx2fc_ulp_start,
2523 .cnic_stop = bnx2fc_ulp_stop,
2524 .indicate_kcqes = bnx2fc_indicate_kcqe,
2525 .indicate_netevent = bnx2fc_indicate_netevent,
2526 };
Linus' kernel tree