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[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / bnx2fc / bnx2fc_fcoe.c
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 void bnx2fc_link_speed_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 struct ethtool_cmd ecmd = { ETHTOOL_GSET };
670
671 if (!dev_ethtool_get_settings(netdev, &ecmd)) {
672 lport->link_supported_speeds &=
673 ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT);
674 if (ecmd.supported & (SUPPORTED_1000baseT_Half |
675 SUPPORTED_1000baseT_Full))
676 lport->link_supported_speeds |= FC_PORTSPEED_1GBIT;
677 if (ecmd.supported & SUPPORTED_10000baseT_Full)
678 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
679
680 if (ecmd.speed == SPEED_1000)
681 lport->link_speed = FC_PORTSPEED_1GBIT;
682 if (ecmd.speed == SPEED_10000)
683 lport->link_speed = FC_PORTSPEED_10GBIT;
684 }
685 return;
686 }
687 static int bnx2fc_link_ok(struct fc_lport *lport)
688 {
689 struct fcoe_port *port = lport_priv(lport);
690 struct bnx2fc_hba *hba = port->priv;
691 struct net_device *dev = hba->phys_dev;
692 int rc = 0;
693
694 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
695 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
696 else {
697 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
698 rc = -1;
699 }
700 return rc;
701 }
702
703 /**
704 * bnx2fc_get_link_state - get network link state
705 *
706 * @hba: adapter instance pointer
707 *
708 * updates adapter structure flag based on netdev state
709 */
710 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
711 {
712 if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state))
713 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
714 else
715 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
716 }
717
718 static int bnx2fc_net_config(struct fc_lport *lport)
719 {
720 struct bnx2fc_hba *hba;
721 struct fcoe_port *port;
722 u64 wwnn, wwpn;
723
724 port = lport_priv(lport);
725 hba = port->priv;
726
727 /* require support for get_pauseparam ethtool op. */
728 if (!hba->phys_dev->ethtool_ops ||
729 !hba->phys_dev->ethtool_ops->get_pauseparam)
730 return -EOPNOTSUPP;
731
732 if (fc_set_mfs(lport, BNX2FC_MFS))
733 return -EINVAL;
734
735 skb_queue_head_init(&port->fcoe_pending_queue);
736 port->fcoe_pending_queue_active = 0;
737 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
738
739 bnx2fc_link_speed_update(lport);
740
741 if (!lport->vport) {
742 wwnn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 1, 0);
743 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
744 fc_set_wwnn(lport, wwnn);
745
746 wwpn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 2, 0);
747 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
748 fc_set_wwpn(lport, wwpn);
749 }
750
751 return 0;
752 }
753
754 static void bnx2fc_destroy_timer(unsigned long data)
755 {
756 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
757
758 BNX2FC_HBA_DBG(hba->ctlr.lp, "ERROR:bnx2fc_destroy_timer - "
759 "Destroy compl not received!!\n");
760 hba->flags |= BNX2FC_FLAG_DESTROY_CMPL;
761 wake_up_interruptible(&hba->destroy_wait);
762 }
763
764 /**
765 * bnx2fc_indicate_netevent - Generic netdev event handler
766 *
767 * @context: adapter structure pointer
768 * @event: event type
769 *
770 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
771 * NETDEV_CHANGE_MTU events
772 */
773 static void bnx2fc_indicate_netevent(void *context, unsigned long event)
774 {
775 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
776 struct fc_lport *lport = hba->ctlr.lp;
777 struct fc_lport *vport;
778 u32 link_possible = 1;
779
780 if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
781 BNX2FC_MISC_DBG("driver not ready. event=%s %ld\n",
782 hba->netdev->name, event);
783 return;
784 }
785
786 /*
787 * ASSUMPTION:
788 * indicate_netevent cannot be called from cnic unless bnx2fc
789 * does register_device
790 */
791 BUG_ON(!lport);
792
793 BNX2FC_HBA_DBG(lport, "enter netevent handler - event=%s %ld\n",
794 hba->netdev->name, event);
795
796 switch (event) {
797 case NETDEV_UP:
798 BNX2FC_HBA_DBG(lport, "Port up, adapter_state = %ld\n",
799 hba->adapter_state);
800 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
801 printk(KERN_ERR "indicate_netevent: "\
802 "adapter is not UP!!\n");
803 break;
804
805 case NETDEV_DOWN:
806 BNX2FC_HBA_DBG(lport, "Port down\n");
807 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
808 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
809 link_possible = 0;
810 break;
811
812 case NETDEV_GOING_DOWN:
813 BNX2FC_HBA_DBG(lport, "Port going down\n");
814 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
815 link_possible = 0;
816 break;
817
818 case NETDEV_CHANGE:
819 BNX2FC_HBA_DBG(lport, "NETDEV_CHANGE\n");
820 break;
821
822 default:
823 printk(KERN_ERR PFX "Unkonwn netevent %ld", event);
824 return;
825 }
826
827 bnx2fc_link_speed_update(lport);
828
829 if (link_possible && !bnx2fc_link_ok(lport)) {
830 printk(KERN_ERR "indicate_netevent: call ctlr_link_up\n");
831 fcoe_ctlr_link_up(&hba->ctlr);
832 } else {
833 printk(KERN_ERR "indicate_netevent: call ctlr_link_down\n");
834 if (fcoe_ctlr_link_down(&hba->ctlr)) {
835 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
836 mutex_lock(&lport->lp_mutex);
837 list_for_each_entry(vport, &lport->vports, list)
838 fc_host_port_type(vport->host) =
839 FC_PORTTYPE_UNKNOWN;
840 mutex_unlock(&lport->lp_mutex);
841 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
842 per_cpu_ptr(lport->dev_stats,
843 get_cpu())->LinkFailureCount++;
844 put_cpu();
845 fcoe_clean_pending_queue(lport);
846
847 init_waitqueue_head(&hba->shutdown_wait);
848 BNX2FC_HBA_DBG(lport, "indicate_netevent "
849 "num_ofld_sess = %d\n",
850 hba->num_ofld_sess);
851 hba->wait_for_link_down = 1;
852 BNX2FC_HBA_DBG(lport, "waiting for uploads to "
853 "compl proc = %s\n",
854 current->comm);
855 wait_event_interruptible(hba->shutdown_wait,
856 (hba->num_ofld_sess == 0));
857 BNX2FC_HBA_DBG(lport, "wakeup - num_ofld_sess = %d\n",
858 hba->num_ofld_sess);
859 hba->wait_for_link_down = 0;
860
861 if (signal_pending(current))
862 flush_signals(current);
863 }
864 }
865 }
866
867 static int bnx2fc_libfc_config(struct fc_lport *lport)
868 {
869
870 /* Set the function pointers set by bnx2fc driver */
871 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
872 sizeof(struct libfc_function_template));
873 fc_elsct_init(lport);
874 fc_exch_init(lport);
875 fc_rport_init(lport);
876 fc_disc_init(lport);
877 return 0;
878 }
879
880 static int bnx2fc_em_config(struct fc_lport *lport)
881 {
882 struct fcoe_port *port = lport_priv(lport);
883 struct bnx2fc_hba *hba = port->priv;
884
885 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID,
886 FCOE_MAX_XID, NULL)) {
887 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
888 return -ENOMEM;
889 }
890
891 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID,
892 BNX2FC_MAX_XID);
893
894 if (!hba->cmd_mgr) {
895 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
896 fc_exch_mgr_free(lport);
897 return -ENOMEM;
898 }
899 return 0;
900 }
901
902 static int bnx2fc_lport_config(struct fc_lport *lport)
903 {
904 lport->link_up = 0;
905 lport->qfull = 0;
906 lport->max_retry_count = 3;
907 lport->max_rport_retry_count = 3;
908 lport->e_d_tov = 2 * 1000;
909 lport->r_a_tov = 10 * 1000;
910
911 /* REVISIT: enable when supporting tape devices
912 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
913 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
914 */
915 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS);
916 lport->does_npiv = 1;
917
918 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
919 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
920
921 /* alloc stats structure */
922 if (fc_lport_init_stats(lport))
923 return -ENOMEM;
924
925 /* Finish fc_lport configuration */
926 fc_lport_config(lport);
927
928 return 0;
929 }
930
931 /**
932 * bnx2fc_fip_recv - handle a received FIP frame.
933 *
934 * @skb: the received skb
935 * @dev: associated &net_device
936 * @ptype: the &packet_type structure which was used to register this handler.
937 * @orig_dev: original receive &net_device, in case @ dev is a bond.
938 *
939 * Returns: 0 for success
940 */
941 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
942 struct packet_type *ptype,
943 struct net_device *orig_dev)
944 {
945 struct bnx2fc_hba *hba;
946 hba = container_of(ptype, struct bnx2fc_hba, fip_packet_type);
947 fcoe_ctlr_recv(&hba->ctlr, skb);
948 return 0;
949 }
950
951 /**
952 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
953 *
954 * @fip: FCoE controller.
955 * @old: Unicast MAC address to delete if the MAC is non-zero.
956 * @new: Unicast MAC address to add.
957 *
958 * Remove any previously-set unicast MAC filter.
959 * Add secondary FCoE MAC address filter for our OUI.
960 */
961 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
962 {
963 struct fcoe_port *port = lport_priv(lport);
964
965 memcpy(port->data_src_addr, addr, ETH_ALEN);
966 }
967
968 /**
969 * bnx2fc_get_src_mac - return the ethernet source address for an lport
970 *
971 * @lport: libfc port
972 */
973 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
974 {
975 struct fcoe_port *port;
976
977 port = (struct fcoe_port *)lport_priv(lport);
978 return port->data_src_addr;
979 }
980
981 /**
982 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
983 *
984 * @fip: FCoE controller.
985 * @skb: FIP Packet.
986 */
987 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
988 {
989 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
990 dev_queue_xmit(skb);
991 }
992
993 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
994 {
995 struct Scsi_Host *shost = vport_to_shost(vport);
996 struct fc_lport *n_port = shost_priv(shost);
997 struct fcoe_port *port = lport_priv(n_port);
998 struct bnx2fc_hba *hba = port->priv;
999 struct net_device *netdev = hba->netdev;
1000 struct fc_lport *vn_port;
1001
1002 if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1003 printk(KERN_ERR PFX "vn ports cannot be created on"
1004 "this hba\n");
1005 return -EIO;
1006 }
1007 mutex_lock(&bnx2fc_dev_lock);
1008 vn_port = bnx2fc_if_create(hba, &vport->dev, 1);
1009 mutex_unlock(&bnx2fc_dev_lock);
1010
1011 if (IS_ERR(vn_port)) {
1012 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1013 netdev->name);
1014 return -EIO;
1015 }
1016
1017 if (disabled) {
1018 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1019 } else {
1020 vn_port->boot_time = jiffies;
1021 fc_lport_init(vn_port);
1022 fc_fabric_login(vn_port);
1023 fc_vport_setlink(vn_port);
1024 }
1025 return 0;
1026 }
1027
1028 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1029 {
1030 struct Scsi_Host *shost = vport_to_shost(vport);
1031 struct fc_lport *n_port = shost_priv(shost);
1032 struct fc_lport *vn_port = vport->dd_data;
1033 struct fcoe_port *port = lport_priv(vn_port);
1034
1035 mutex_lock(&n_port->lp_mutex);
1036 list_del(&vn_port->list);
1037 mutex_unlock(&n_port->lp_mutex);
1038 queue_work(bnx2fc_wq, &port->destroy_work);
1039 return 0;
1040 }
1041
1042 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1043 {
1044 struct fc_lport *lport = vport->dd_data;
1045
1046 if (disable) {
1047 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1048 fc_fabric_logoff(lport);
1049 } else {
1050 lport->boot_time = jiffies;
1051 fc_fabric_login(lport);
1052 fc_vport_setlink(lport);
1053 }
1054 return 0;
1055 }
1056
1057
1058 static int bnx2fc_netdev_setup(struct bnx2fc_hba *hba)
1059 {
1060 struct net_device *netdev = hba->netdev;
1061 struct net_device *physdev = hba->phys_dev;
1062 struct netdev_hw_addr *ha;
1063 int sel_san_mac = 0;
1064
1065 /* setup Source MAC Address */
1066 rcu_read_lock();
1067 for_each_dev_addr(physdev, ha) {
1068 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1069 ha->type);
1070 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1071 ha->addr[1], ha->addr[2], ha->addr[3],
1072 ha->addr[4], ha->addr[5]);
1073
1074 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1075 (is_valid_ether_addr(ha->addr))) {
1076 memcpy(hba->ctlr.ctl_src_addr, ha->addr, ETH_ALEN);
1077 sel_san_mac = 1;
1078 BNX2FC_MISC_DBG("Found SAN MAC\n");
1079 }
1080 }
1081 rcu_read_unlock();
1082
1083 if (!sel_san_mac)
1084 return -ENODEV;
1085
1086 hba->fip_packet_type.func = bnx2fc_fip_recv;
1087 hba->fip_packet_type.type = htons(ETH_P_FIP);
1088 hba->fip_packet_type.dev = netdev;
1089 dev_add_pack(&hba->fip_packet_type);
1090
1091 hba->fcoe_packet_type.func = bnx2fc_rcv;
1092 hba->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1093 hba->fcoe_packet_type.dev = netdev;
1094 dev_add_pack(&hba->fcoe_packet_type);
1095
1096 return 0;
1097 }
1098
1099 static int bnx2fc_attach_transport(void)
1100 {
1101 bnx2fc_transport_template =
1102 fc_attach_transport(&bnx2fc_transport_function);
1103
1104 if (bnx2fc_transport_template == NULL) {
1105 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1106 return -ENODEV;
1107 }
1108
1109 bnx2fc_vport_xport_template =
1110 fc_attach_transport(&bnx2fc_vport_xport_function);
1111 if (bnx2fc_vport_xport_template == NULL) {
1112 printk(KERN_ERR PFX
1113 "Failed to attach FC transport for vport\n");
1114 fc_release_transport(bnx2fc_transport_template);
1115 bnx2fc_transport_template = NULL;
1116 return -ENODEV;
1117 }
1118 return 0;
1119 }
1120 static void bnx2fc_release_transport(void)
1121 {
1122 fc_release_transport(bnx2fc_transport_template);
1123 fc_release_transport(bnx2fc_vport_xport_template);
1124 bnx2fc_transport_template = NULL;
1125 bnx2fc_vport_xport_template = NULL;
1126 }
1127
1128 static void bnx2fc_interface_release(struct kref *kref)
1129 {
1130 struct bnx2fc_hba *hba;
1131 struct net_device *netdev;
1132 struct net_device *phys_dev;
1133
1134 hba = container_of(kref, struct bnx2fc_hba, kref);
1135 BNX2FC_HBA_DBG(hba->ctlr.lp, "Interface is being released\n");
1136
1137 netdev = hba->netdev;
1138 phys_dev = hba->phys_dev;
1139
1140 /* tear-down FIP controller */
1141 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done))
1142 fcoe_ctlr_destroy(&hba->ctlr);
1143
1144 /* Free the command manager */
1145 if (hba->cmd_mgr) {
1146 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1147 hba->cmd_mgr = NULL;
1148 }
1149 dev_put(netdev);
1150 module_put(THIS_MODULE);
1151 }
1152
1153 static inline void bnx2fc_interface_get(struct bnx2fc_hba *hba)
1154 {
1155 kref_get(&hba->kref);
1156 }
1157
1158 static inline void bnx2fc_interface_put(struct bnx2fc_hba *hba)
1159 {
1160 kref_put(&hba->kref, bnx2fc_interface_release);
1161 }
1162 static void bnx2fc_interface_destroy(struct bnx2fc_hba *hba)
1163 {
1164 bnx2fc_unbind_pcidev(hba);
1165 kfree(hba);
1166 }
1167
1168 /**
1169 * bnx2fc_interface_create - create a new fcoe instance
1170 *
1171 * @cnic: pointer to cnic device
1172 *
1173 * Creates a new FCoE instance on the given device which include allocating
1174 * hba structure, scsi_host and lport structures.
1175 */
1176 static struct bnx2fc_hba *bnx2fc_interface_create(struct cnic_dev *cnic)
1177 {
1178 struct bnx2fc_hba *hba;
1179 int rc;
1180
1181 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1182 if (!hba) {
1183 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1184 return NULL;
1185 }
1186 spin_lock_init(&hba->hba_lock);
1187 mutex_init(&hba->hba_mutex);
1188
1189 hba->cnic = cnic;
1190 rc = bnx2fc_bind_pcidev(hba);
1191 if (rc)
1192 goto bind_err;
1193 hba->phys_dev = cnic->netdev;
1194 /* will get overwritten after we do vlan discovery */
1195 hba->netdev = hba->phys_dev;
1196
1197 init_waitqueue_head(&hba->shutdown_wait);
1198 init_waitqueue_head(&hba->destroy_wait);
1199
1200 return hba;
1201 bind_err:
1202 printk(KERN_ERR PFX "create_interface: bind error\n");
1203 kfree(hba);
1204 return NULL;
1205 }
1206
1207 static int bnx2fc_interface_setup(struct bnx2fc_hba *hba,
1208 enum fip_state fip_mode)
1209 {
1210 int rc = 0;
1211 struct net_device *netdev = hba->netdev;
1212 struct fcoe_ctlr *fip = &hba->ctlr;
1213
1214 dev_hold(netdev);
1215 kref_init(&hba->kref);
1216
1217 hba->flags = 0;
1218
1219 /* Initialize FIP */
1220 memset(fip, 0, sizeof(*fip));
1221 fcoe_ctlr_init(fip, fip_mode);
1222 hba->ctlr.send = bnx2fc_fip_send;
1223 hba->ctlr.update_mac = bnx2fc_update_src_mac;
1224 hba->ctlr.get_src_addr = bnx2fc_get_src_mac;
1225 set_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done);
1226
1227 rc = bnx2fc_netdev_setup(hba);
1228 if (rc)
1229 goto setup_err;
1230
1231 hba->next_conn_id = 0;
1232
1233 memset(hba->tgt_ofld_list, 0, sizeof(hba->tgt_ofld_list));
1234 hba->num_ofld_sess = 0;
1235
1236 return 0;
1237
1238 setup_err:
1239 fcoe_ctlr_destroy(&hba->ctlr);
1240 dev_put(netdev);
1241 bnx2fc_interface_put(hba);
1242 return rc;
1243 }
1244
1245 /**
1246 * bnx2fc_if_create - Create FCoE instance on a given interface
1247 *
1248 * @hba: FCoE interface to create a local port on
1249 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1250 * @npiv: Indicates if the port is vport or not
1251 *
1252 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1253 *
1254 * Returns: Allocated fc_lport or an error pointer
1255 */
1256 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_hba *hba,
1257 struct device *parent, int npiv)
1258 {
1259 struct fc_lport *lport = NULL;
1260 struct fcoe_port *port;
1261 struct Scsi_Host *shost;
1262 struct fc_vport *vport = dev_to_vport(parent);
1263 int rc = 0;
1264
1265 /* Allocate Scsi_Host structure */
1266 if (!npiv) {
1267 lport = libfc_host_alloc(&bnx2fc_shost_template,
1268 sizeof(struct fcoe_port));
1269 } else {
1270 lport = libfc_vport_create(vport,
1271 sizeof(struct fcoe_port));
1272 }
1273
1274 if (!lport) {
1275 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1276 return NULL;
1277 }
1278 shost = lport->host;
1279 port = lport_priv(lport);
1280 port->lport = lport;
1281 port->priv = hba;
1282 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1283
1284 /* Configure fcoe_port */
1285 rc = bnx2fc_lport_config(lport);
1286 if (rc)
1287 goto lp_config_err;
1288
1289 if (npiv) {
1290 vport = dev_to_vport(parent);
1291 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1292 vport->node_name, vport->port_name);
1293 fc_set_wwnn(lport, vport->node_name);
1294 fc_set_wwpn(lport, vport->port_name);
1295 }
1296 /* Configure netdev and networking properties of the lport */
1297 rc = bnx2fc_net_config(lport);
1298 if (rc) {
1299 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1300 goto lp_config_err;
1301 }
1302
1303 rc = bnx2fc_shost_config(lport, parent);
1304 if (rc) {
1305 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1306 hba->netdev->name);
1307 goto lp_config_err;
1308 }
1309
1310 /* Initialize the libfc library */
1311 rc = bnx2fc_libfc_config(lport);
1312 if (rc) {
1313 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1314 goto shost_err;
1315 }
1316 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1317
1318 /* Allocate exchange manager */
1319 if (!npiv) {
1320 rc = bnx2fc_em_config(lport);
1321 if (rc) {
1322 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1323 goto shost_err;
1324 }
1325 }
1326
1327 bnx2fc_interface_get(hba);
1328 return lport;
1329
1330 shost_err:
1331 scsi_remove_host(shost);
1332 lp_config_err:
1333 scsi_host_put(lport->host);
1334 return NULL;
1335 }
1336
1337 static void bnx2fc_netdev_cleanup(struct bnx2fc_hba *hba)
1338 {
1339 /* Dont listen for Ethernet packets anymore */
1340 __dev_remove_pack(&hba->fcoe_packet_type);
1341 __dev_remove_pack(&hba->fip_packet_type);
1342 synchronize_net();
1343 }
1344
1345 static void bnx2fc_if_destroy(struct fc_lport *lport)
1346 {
1347 struct fcoe_port *port = lport_priv(lport);
1348 struct bnx2fc_hba *hba = port->priv;
1349
1350 BNX2FC_HBA_DBG(hba->ctlr.lp, "ENTERED bnx2fc_if_destroy\n");
1351 /* Stop the transmit retry timer */
1352 del_timer_sync(&port->timer);
1353
1354 /* Free existing transmit skbs */
1355 fcoe_clean_pending_queue(lport);
1356
1357 bnx2fc_interface_put(hba);
1358
1359 /* Free queued packets for the receive thread */
1360 bnx2fc_clean_rx_queue(lport);
1361
1362 /* Detach from scsi-ml */
1363 fc_remove_host(lport->host);
1364 scsi_remove_host(lport->host);
1365
1366 /*
1367 * Note that only the physical lport will have the exchange manager.
1368 * for vports, this function is NOP
1369 */
1370 fc_exch_mgr_free(lport);
1371
1372 /* Free memory used by statistical counters */
1373 fc_lport_free_stats(lport);
1374
1375 /* Release Scsi_Host */
1376 scsi_host_put(lport->host);
1377 }
1378
1379 /**
1380 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1381 *
1382 * @buffer: The name of the Ethernet interface to be destroyed
1383 * @kp: The associated kernel parameter
1384 *
1385 * Called from sysfs.
1386 *
1387 * Returns: 0 for success
1388 */
1389 static int bnx2fc_destroy(struct net_device *netdev)
1390 {
1391 struct bnx2fc_hba *hba = NULL;
1392 struct net_device *phys_dev;
1393 int rc = 0;
1394
1395 rtnl_lock();
1396
1397 mutex_lock(&bnx2fc_dev_lock);
1398 #ifdef CONFIG_SCSI_BNX2X_FCOE_MODULE
1399 if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1400 rc = -ENODEV;
1401 goto netdev_err;
1402 }
1403 #endif
1404 /* obtain physical netdev */
1405 if (netdev->priv_flags & IFF_802_1Q_VLAN)
1406 phys_dev = vlan_dev_real_dev(netdev);
1407 else {
1408 printk(KERN_ERR PFX "Not a vlan device\n");
1409 rc = -ENODEV;
1410 goto netdev_err;
1411 }
1412
1413 hba = bnx2fc_hba_lookup(phys_dev);
1414 if (!hba || !hba->ctlr.lp) {
1415 rc = -ENODEV;
1416 printk(KERN_ERR PFX "bnx2fc_destroy: hba or lport not found\n");
1417 goto netdev_err;
1418 }
1419
1420 if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1421 printk(KERN_ERR PFX "bnx2fc_destroy: Create not called\n");
1422 goto netdev_err;
1423 }
1424
1425 bnx2fc_netdev_cleanup(hba);
1426
1427 bnx2fc_stop(hba);
1428
1429 bnx2fc_if_destroy(hba->ctlr.lp);
1430
1431 destroy_workqueue(hba->timer_work_queue);
1432
1433 if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done))
1434 bnx2fc_fw_destroy(hba);
1435
1436 clear_bit(BNX2FC_CREATE_DONE, &hba->init_done);
1437 netdev_err:
1438 mutex_unlock(&bnx2fc_dev_lock);
1439 rtnl_unlock();
1440 return rc;
1441 }
1442
1443 static void bnx2fc_destroy_work(struct work_struct *work)
1444 {
1445 struct fcoe_port *port;
1446 struct fc_lport *lport;
1447
1448 port = container_of(work, struct fcoe_port, destroy_work);
1449 lport = port->lport;
1450
1451 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1452
1453 bnx2fc_port_shutdown(lport);
1454 rtnl_lock();
1455 mutex_lock(&bnx2fc_dev_lock);
1456 bnx2fc_if_destroy(lport);
1457 mutex_unlock(&bnx2fc_dev_lock);
1458 rtnl_unlock();
1459 }
1460
1461 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1462 {
1463 bnx2fc_free_fw_resc(hba);
1464 bnx2fc_free_task_ctx(hba);
1465 }
1466
1467 /**
1468 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1469 * pci structure
1470 *
1471 * @hba: Adapter instance
1472 */
1473 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1474 {
1475 if (bnx2fc_setup_task_ctx(hba))
1476 goto mem_err;
1477
1478 if (bnx2fc_setup_fw_resc(hba))
1479 goto mem_err;
1480
1481 return 0;
1482 mem_err:
1483 bnx2fc_unbind_adapter_devices(hba);
1484 return -ENOMEM;
1485 }
1486
1487 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1488 {
1489 struct cnic_dev *cnic;
1490
1491 if (!hba->cnic) {
1492 printk(KERN_ERR PFX "cnic is NULL\n");
1493 return -ENODEV;
1494 }
1495 cnic = hba->cnic;
1496 hba->pcidev = cnic->pcidev;
1497 if (hba->pcidev)
1498 pci_dev_get(hba->pcidev);
1499
1500 return 0;
1501 }
1502
1503 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1504 {
1505 if (hba->pcidev)
1506 pci_dev_put(hba->pcidev);
1507 hba->pcidev = NULL;
1508 }
1509
1510
1511
1512 /**
1513 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1514 *
1515 * @handle: transport handle pointing to adapter struture
1516 *
1517 * This function maps adapter structure to pcidev structure and initiates
1518 * firmware handshake to enable/initialize on-chip FCoE components.
1519 * This bnx2fc - cnic interface api callback is used after following
1520 * conditions are met -
1521 * a) underlying network interface is up (marked by event NETDEV_UP
1522 * from netdev
1523 * b) bnx2fc adatper structure is registered.
1524 */
1525 static void bnx2fc_ulp_start(void *handle)
1526 {
1527 struct bnx2fc_hba *hba = handle;
1528 struct fc_lport *lport = hba->ctlr.lp;
1529
1530 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1531 mutex_lock(&bnx2fc_dev_lock);
1532
1533 if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done))
1534 goto start_disc;
1535
1536 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done))
1537 bnx2fc_fw_init(hba);
1538
1539 start_disc:
1540 mutex_unlock(&bnx2fc_dev_lock);
1541
1542 BNX2FC_MISC_DBG("bnx2fc started.\n");
1543
1544 /* Kick off Fabric discovery*/
1545 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1546 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1547 lport->tt.frame_send = bnx2fc_xmit;
1548 bnx2fc_start_disc(hba);
1549 }
1550 }
1551
1552 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1553 {
1554 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1555 fc_fabric_logoff(lport);
1556 fc_lport_destroy(lport);
1557 }
1558
1559 static void bnx2fc_stop(struct bnx2fc_hba *hba)
1560 {
1561 struct fc_lport *lport;
1562 struct fc_lport *vport;
1563
1564 BNX2FC_MISC_DBG("ENTERED %s - init_done = %ld\n", __func__,
1565 hba->init_done);
1566 if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done) &&
1567 test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1568 lport = hba->ctlr.lp;
1569 bnx2fc_port_shutdown(lport);
1570 BNX2FC_HBA_DBG(lport, "bnx2fc_stop: waiting for %d "
1571 "offloaded sessions\n",
1572 hba->num_ofld_sess);
1573 wait_event_interruptible(hba->shutdown_wait,
1574 (hba->num_ofld_sess == 0));
1575 mutex_lock(&lport->lp_mutex);
1576 list_for_each_entry(vport, &lport->vports, list)
1577 fc_host_port_type(vport->host) = FC_PORTTYPE_UNKNOWN;
1578 mutex_unlock(&lport->lp_mutex);
1579 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1580 fcoe_ctlr_link_down(&hba->ctlr);
1581 fcoe_clean_pending_queue(lport);
1582
1583 mutex_lock(&hba->hba_mutex);
1584 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1585 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
1586
1587 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1588 mutex_unlock(&hba->hba_mutex);
1589 }
1590 }
1591
1592 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1593 {
1594 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1595 int rc = -1;
1596 int i = HZ;
1597
1598 rc = bnx2fc_bind_adapter_devices(hba);
1599 if (rc) {
1600 printk(KERN_ALERT PFX
1601 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1602 goto err_out;
1603 }
1604
1605 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1606 if (rc) {
1607 printk(KERN_ALERT PFX
1608 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1609 goto err_unbind;
1610 }
1611
1612 /*
1613 * Wait until the adapter init message is complete, and adapter
1614 * state is UP.
1615 */
1616 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1617 msleep(BNX2FC_INIT_POLL_TIME);
1618
1619 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1620 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1621 "Ignoring...\n",
1622 hba->cnic->netdev->name);
1623 rc = -1;
1624 goto err_unbind;
1625 }
1626
1627
1628 /* Mark HBA to indicate that the FW INIT is done */
1629 set_bit(BNX2FC_FW_INIT_DONE, &hba->init_done);
1630 return 0;
1631
1632 err_unbind:
1633 bnx2fc_unbind_adapter_devices(hba);
1634 err_out:
1635 return rc;
1636 }
1637
1638 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1639 {
1640 if (test_and_clear_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1641 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1642 init_timer(&hba->destroy_timer);
1643 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1644 jiffies;
1645 hba->destroy_timer.function = bnx2fc_destroy_timer;
1646 hba->destroy_timer.data = (unsigned long)hba;
1647 add_timer(&hba->destroy_timer);
1648 wait_event_interruptible(hba->destroy_wait,
1649 (hba->flags &
1650 BNX2FC_FLAG_DESTROY_CMPL));
1651 /* This should never happen */
1652 if (signal_pending(current))
1653 flush_signals(current);
1654
1655 del_timer_sync(&hba->destroy_timer);
1656 }
1657 bnx2fc_unbind_adapter_devices(hba);
1658 }
1659 }
1660
1661 /**
1662 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1663 *
1664 * @handle: transport handle pointing to adapter structure
1665 *
1666 * Driver checks if adapter is already in shutdown mode, if not start
1667 * the shutdown process.
1668 */
1669 static void bnx2fc_ulp_stop(void *handle)
1670 {
1671 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)handle;
1672
1673 printk(KERN_ERR "ULP_STOP\n");
1674
1675 mutex_lock(&bnx2fc_dev_lock);
1676 bnx2fc_stop(hba);
1677 bnx2fc_fw_destroy(hba);
1678 mutex_unlock(&bnx2fc_dev_lock);
1679 }
1680
1681 static void bnx2fc_start_disc(struct bnx2fc_hba *hba)
1682 {
1683 struct fc_lport *lport;
1684 int wait_cnt = 0;
1685
1686 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1687 /* Kick off FIP/FLOGI */
1688 if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1689 printk(KERN_ERR PFX "Init not done yet\n");
1690 return;
1691 }
1692
1693 lport = hba->ctlr.lp;
1694 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1695
1696 if (!bnx2fc_link_ok(lport)) {
1697 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1698 fcoe_ctlr_link_up(&hba->ctlr);
1699 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1700 set_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1701 }
1702
1703 /* wait for the FCF to be selected before issuing FLOGI */
1704 while (!hba->ctlr.sel_fcf) {
1705 msleep(250);
1706 /* give up after 3 secs */
1707 if (++wait_cnt > 12)
1708 break;
1709 }
1710 fc_lport_init(lport);
1711 fc_fabric_login(lport);
1712 }
1713
1714
1715 /**
1716 * bnx2fc_ulp_init - Initialize an adapter instance
1717 *
1718 * @dev : cnic device handle
1719 * Called from cnic_register_driver() context to initialize all
1720 * enumerated cnic devices. This routine allocates adapter structure
1721 * and other device specific resources.
1722 */
1723 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1724 {
1725 struct bnx2fc_hba *hba;
1726 int rc = 0;
1727
1728 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1729 /* bnx2fc works only when bnx2x is loaded */
1730 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1731 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1732 " flags: %lx\n",
1733 dev->netdev->name, dev->flags);
1734 return;
1735 }
1736
1737 /* Configure FCoE interface */
1738 hba = bnx2fc_interface_create(dev);
1739 if (!hba) {
1740 printk(KERN_ERR PFX "hba initialization failed\n");
1741 return;
1742 }
1743
1744 /* Add HBA to the adapter list */
1745 mutex_lock(&bnx2fc_dev_lock);
1746 list_add_tail(&hba->link, &adapter_list);
1747 adapter_count++;
1748 mutex_unlock(&bnx2fc_dev_lock);
1749
1750 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1751 rc = dev->register_device(dev, CNIC_ULP_FCOE,
1752 (void *) hba);
1753 if (rc)
1754 printk(KERN_ALERT PFX "register_device failed, rc = %d\n", rc);
1755 else
1756 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1757 }
1758
1759
1760 static int bnx2fc_disable(struct net_device *netdev)
1761 {
1762 struct bnx2fc_hba *hba;
1763 struct net_device *phys_dev;
1764 struct ethtool_drvinfo drvinfo;
1765 int rc = 0;
1766
1767 rtnl_lock();
1768
1769 mutex_lock(&bnx2fc_dev_lock);
1770
1771 if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1772 rc = -ENODEV;
1773 goto nodev;
1774 }
1775
1776 /* obtain physical netdev */
1777 if (netdev->priv_flags & IFF_802_1Q_VLAN)
1778 phys_dev = vlan_dev_real_dev(netdev);
1779 else {
1780 printk(KERN_ERR PFX "Not a vlan device\n");
1781 rc = -ENODEV;
1782 goto nodev;
1783 }
1784
1785 /* verify if the physical device is a netxtreme2 device */
1786 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1787 memset(&drvinfo, 0, sizeof(drvinfo));
1788 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1789 if (strcmp(drvinfo.driver, "bnx2x")) {
1790 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1791 rc = -ENODEV;
1792 goto nodev;
1793 }
1794 } else {
1795 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1796 rc = -ENODEV;
1797 goto nodev;
1798 }
1799
1800 printk(KERN_ERR PFX "phys_dev is netxtreme2 device\n");
1801
1802 /* obtain hba and initialize rest of the structure */
1803 hba = bnx2fc_hba_lookup(phys_dev);
1804 if (!hba || !hba->ctlr.lp) {
1805 rc = -ENODEV;
1806 printk(KERN_ERR PFX "bnx2fc_disable: hba or lport not found\n");
1807 } else {
1808 fcoe_ctlr_link_down(&hba->ctlr);
1809 fcoe_clean_pending_queue(hba->ctlr.lp);
1810 }
1811
1812 nodev:
1813 mutex_unlock(&bnx2fc_dev_lock);
1814 rtnl_unlock();
1815 return rc;
1816 }
1817
1818
1819 static int bnx2fc_enable(struct net_device *netdev)
1820 {
1821 struct bnx2fc_hba *hba;
1822 struct net_device *phys_dev;
1823 struct ethtool_drvinfo drvinfo;
1824 int rc = 0;
1825
1826 rtnl_lock();
1827
1828 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1829 mutex_lock(&bnx2fc_dev_lock);
1830
1831 if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1832 rc = -ENODEV;
1833 goto nodev;
1834 }
1835
1836 /* obtain physical netdev */
1837 if (netdev->priv_flags & IFF_802_1Q_VLAN)
1838 phys_dev = vlan_dev_real_dev(netdev);
1839 else {
1840 printk(KERN_ERR PFX "Not a vlan device\n");
1841 rc = -ENODEV;
1842 goto nodev;
1843 }
1844 /* verify if the physical device is a netxtreme2 device */
1845 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1846 memset(&drvinfo, 0, sizeof(drvinfo));
1847 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1848 if (strcmp(drvinfo.driver, "bnx2x")) {
1849 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1850 rc = -ENODEV;
1851 goto nodev;
1852 }
1853 } else {
1854 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1855 rc = -ENODEV;
1856 goto nodev;
1857 }
1858
1859 /* obtain hba and initialize rest of the structure */
1860 hba = bnx2fc_hba_lookup(phys_dev);
1861 if (!hba || !hba->ctlr.lp) {
1862 rc = -ENODEV;
1863 printk(KERN_ERR PFX "bnx2fc_enable: hba or lport not found\n");
1864 } else if (!bnx2fc_link_ok(hba->ctlr.lp))
1865 fcoe_ctlr_link_up(&hba->ctlr);
1866
1867 nodev:
1868 mutex_unlock(&bnx2fc_dev_lock);
1869 rtnl_unlock();
1870 return rc;
1871 }
1872
1873 /**
1874 * bnx2fc_create - Create bnx2fc FCoE interface
1875 *
1876 * @buffer: The name of Ethernet interface to create on
1877 * @kp: The associated kernel param
1878 *
1879 * Called from sysfs.
1880 *
1881 * Returns: 0 for success
1882 */
1883 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
1884 {
1885 struct bnx2fc_hba *hba;
1886 struct net_device *phys_dev;
1887 struct fc_lport *lport;
1888 struct ethtool_drvinfo drvinfo;
1889 int rc = 0;
1890 int vlan_id;
1891
1892 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
1893 if (fip_mode != FIP_MODE_FABRIC) {
1894 printk(KERN_ERR "fip mode not FABRIC\n");
1895 return -EIO;
1896 }
1897
1898 rtnl_lock();
1899
1900 mutex_lock(&bnx2fc_dev_lock);
1901
1902 #ifdef CONFIG_SCSI_BNX2X_FCOE_MODULE
1903 if (THIS_MODULE->state != MODULE_STATE_LIVE) {
1904 rc = -ENODEV;
1905 goto mod_err;
1906 }
1907 #endif
1908
1909 if (!try_module_get(THIS_MODULE)) {
1910 rc = -EINVAL;
1911 goto mod_err;
1912 }
1913
1914 /* obtain physical netdev */
1915 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
1916 phys_dev = vlan_dev_real_dev(netdev);
1917 vlan_id = vlan_dev_vlan_id(netdev);
1918 } else {
1919 printk(KERN_ERR PFX "Not a vlan device\n");
1920 rc = -EINVAL;
1921 goto netdev_err;
1922 }
1923 /* verify if the physical device is a netxtreme2 device */
1924 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1925 memset(&drvinfo, 0, sizeof(drvinfo));
1926 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1927 if (strcmp(drvinfo.driver, "bnx2x")) {
1928 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1929 rc = -EINVAL;
1930 goto netdev_err;
1931 }
1932 } else {
1933 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1934 rc = -EINVAL;
1935 goto netdev_err;
1936 }
1937
1938 /* obtain hba and initialize rest of the structure */
1939 hba = bnx2fc_hba_lookup(phys_dev);
1940 if (!hba) {
1941 rc = -ENODEV;
1942 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
1943 goto netdev_err;
1944 }
1945
1946 if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1947 rc = bnx2fc_fw_init(hba);
1948 if (rc)
1949 goto netdev_err;
1950 }
1951
1952 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1953 rc = -EEXIST;
1954 goto netdev_err;
1955 }
1956
1957 /* update netdev with vlan netdev */
1958 hba->netdev = netdev;
1959 hba->vlan_id = vlan_id;
1960 hba->vlan_enabled = 1;
1961
1962 rc = bnx2fc_interface_setup(hba, fip_mode);
1963 if (rc) {
1964 printk(KERN_ERR PFX "bnx2fc_interface_setup failed\n");
1965 goto ifput_err;
1966 }
1967
1968 hba->timer_work_queue =
1969 create_singlethread_workqueue("bnx2fc_timer_wq");
1970 if (!hba->timer_work_queue) {
1971 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
1972 rc = -EINVAL;
1973 goto ifput_err;
1974 }
1975
1976 lport = bnx2fc_if_create(hba, &hba->pcidev->dev, 0);
1977 if (!lport) {
1978 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
1979 netdev->name);
1980 bnx2fc_netdev_cleanup(hba);
1981 rc = -EINVAL;
1982 goto if_create_err;
1983 }
1984
1985 lport->boot_time = jiffies;
1986
1987 /* Make this master N_port */
1988 hba->ctlr.lp = lport;
1989
1990 set_bit(BNX2FC_CREATE_DONE, &hba->init_done);
1991 printk(KERN_ERR PFX "create: START DISC\n");
1992 bnx2fc_start_disc(hba);
1993 /*
1994 * Release from kref_init in bnx2fc_interface_setup, on success
1995 * lport should be holding a reference taken in bnx2fc_if_create
1996 */
1997 bnx2fc_interface_put(hba);
1998 /* put netdev that was held while calling dev_get_by_name */
1999 mutex_unlock(&bnx2fc_dev_lock);
2000 rtnl_unlock();
2001 return 0;
2002
2003 if_create_err:
2004 destroy_workqueue(hba->timer_work_queue);
2005 ifput_err:
2006 bnx2fc_interface_put(hba);
2007 netdev_err:
2008 module_put(THIS_MODULE);
2009 mod_err:
2010 mutex_unlock(&bnx2fc_dev_lock);
2011 rtnl_unlock();
2012 return rc;
2013 }
2014
2015 /**
2016 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc adapter instance
2017 *
2018 * @cnic: Pointer to cnic device instance
2019 *
2020 **/
2021 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2022 {
2023 struct list_head *list;
2024 struct list_head *temp;
2025 struct bnx2fc_hba *hba;
2026
2027 /* Called with bnx2fc_dev_lock held */
2028 list_for_each_safe(list, temp, &adapter_list) {
2029 hba = (struct bnx2fc_hba *)list;
2030 if (hba->cnic == cnic)
2031 return hba;
2032 }
2033 return NULL;
2034 }
2035
2036 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev)
2037 {
2038 struct list_head *list;
2039 struct list_head *temp;
2040 struct bnx2fc_hba *hba;
2041
2042 /* Called with bnx2fc_dev_lock held */
2043 list_for_each_safe(list, temp, &adapter_list) {
2044 hba = (struct bnx2fc_hba *)list;
2045 if (hba->phys_dev == phys_dev)
2046 return hba;
2047 }
2048 printk(KERN_ERR PFX "hba_lookup: hba NULL\n");
2049 return NULL;
2050 }
2051
2052 /**
2053 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2054 *
2055 * @dev cnic device handle
2056 */
2057 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2058 {
2059 struct bnx2fc_hba *hba;
2060
2061 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2062
2063 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2064 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2065 dev->netdev->name, dev->flags);
2066 return;
2067 }
2068
2069 mutex_lock(&bnx2fc_dev_lock);
2070 hba = bnx2fc_find_hba_for_cnic(dev);
2071 if (!hba) {
2072 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2073 dev);
2074 mutex_unlock(&bnx2fc_dev_lock);
2075 return;
2076 }
2077
2078 list_del_init(&hba->link);
2079 adapter_count--;
2080
2081 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
2082 /* destroy not called yet, move to quiesced list */
2083 bnx2fc_netdev_cleanup(hba);
2084 bnx2fc_if_destroy(hba->ctlr.lp);
2085 }
2086 mutex_unlock(&bnx2fc_dev_lock);
2087
2088 bnx2fc_ulp_stop(hba);
2089 /* unregister cnic device */
2090 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2091 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2092 bnx2fc_interface_destroy(hba);
2093 }
2094
2095 /**
2096 * bnx2fc_fcoe_reset - Resets the fcoe
2097 *
2098 * @shost: shost the reset is from
2099 *
2100 * Returns: always 0
2101 */
2102 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2103 {
2104 struct fc_lport *lport = shost_priv(shost);
2105 fc_lport_reset(lport);
2106 return 0;
2107 }
2108
2109
2110 static bool bnx2fc_match(struct net_device *netdev)
2111 {
2112 mutex_lock(&bnx2fc_dev_lock);
2113 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2114 struct net_device *phys_dev = vlan_dev_real_dev(netdev);
2115
2116 if (bnx2fc_hba_lookup(phys_dev)) {
2117 mutex_unlock(&bnx2fc_dev_lock);
2118 return true;
2119 }
2120 }
2121 mutex_unlock(&bnx2fc_dev_lock);
2122 return false;
2123 }
2124
2125
2126 static struct fcoe_transport bnx2fc_transport = {
2127 .name = {"bnx2fc"},
2128 .attached = false,
2129 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2130 .match = bnx2fc_match,
2131 .create = bnx2fc_create,
2132 .destroy = bnx2fc_destroy,
2133 .enable = bnx2fc_enable,
2134 .disable = bnx2fc_disable,
2135 };
2136
2137 /**
2138 * bnx2fc_percpu_thread_create - Create a receive thread for an
2139 * online CPU
2140 *
2141 * @cpu: cpu index for the online cpu
2142 */
2143 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2144 {
2145 struct bnx2fc_percpu_s *p;
2146 struct task_struct *thread;
2147
2148 p = &per_cpu(bnx2fc_percpu, cpu);
2149
2150 thread = kthread_create(bnx2fc_percpu_io_thread,
2151 (void *)p,
2152 "bnx2fc_thread/%d", cpu);
2153 /* bind thread to the cpu */
2154 if (likely(!IS_ERR(p->iothread))) {
2155 kthread_bind(thread, cpu);
2156 p->iothread = thread;
2157 wake_up_process(thread);
2158 }
2159 }
2160
2161 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2162 {
2163 struct bnx2fc_percpu_s *p;
2164 struct task_struct *thread;
2165 struct bnx2fc_work *work, *tmp;
2166 LIST_HEAD(work_list);
2167
2168 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2169
2170 /* Prevent any new work from being queued for this CPU */
2171 p = &per_cpu(bnx2fc_percpu, cpu);
2172 spin_lock_bh(&p->fp_work_lock);
2173 thread = p->iothread;
2174 p->iothread = NULL;
2175
2176
2177 /* Free all work in the list */
2178 list_for_each_entry_safe(work, tmp, &work_list, list) {
2179 list_del_init(&work->list);
2180 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2181 kfree(work);
2182 }
2183
2184 spin_unlock_bh(&p->fp_work_lock);
2185
2186 if (thread)
2187 kthread_stop(thread);
2188 }
2189
2190 /**
2191 * bnx2fc_cpu_callback - Handler for CPU hotplug events
2192 *
2193 * @nfb: The callback data block
2194 * @action: The event triggering the callback
2195 * @hcpu: The index of the CPU that the event is for
2196 *
2197 * This creates or destroys per-CPU data for fcoe
2198 *
2199 * Returns NOTIFY_OK always.
2200 */
2201 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2202 unsigned long action, void *hcpu)
2203 {
2204 unsigned cpu = (unsigned long)hcpu;
2205
2206 switch (action) {
2207 case CPU_ONLINE:
2208 case CPU_ONLINE_FROZEN:
2209 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2210 bnx2fc_percpu_thread_create(cpu);
2211 break;
2212 case CPU_DEAD:
2213 case CPU_DEAD_FROZEN:
2214 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2215 bnx2fc_percpu_thread_destroy(cpu);
2216 break;
2217 default:
2218 break;
2219 }
2220 return NOTIFY_OK;
2221 }
2222
2223 /**
2224 * bnx2fc_mod_init - module init entry point
2225 *
2226 * Initialize driver wide global data structures, and register
2227 * with cnic module
2228 **/
2229 static int __init bnx2fc_mod_init(void)
2230 {
2231 struct fcoe_percpu_s *bg;
2232 struct task_struct *l2_thread;
2233 int rc = 0;
2234 unsigned int cpu = 0;
2235 struct bnx2fc_percpu_s *p;
2236
2237 printk(KERN_INFO PFX "%s", version);
2238
2239 /* register as a fcoe transport */
2240 rc = fcoe_transport_attach(&bnx2fc_transport);
2241 if (rc) {
2242 printk(KERN_ERR "failed to register an fcoe transport, check "
2243 "if libfcoe is loaded\n");
2244 goto out;
2245 }
2246
2247 INIT_LIST_HEAD(&adapter_list);
2248 mutex_init(&bnx2fc_dev_lock);
2249 adapter_count = 0;
2250
2251 /* Attach FC transport template */
2252 rc = bnx2fc_attach_transport();
2253 if (rc)
2254 goto detach_ft;
2255
2256 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2257 if (!bnx2fc_wq) {
2258 rc = -ENOMEM;
2259 goto release_bt;
2260 }
2261
2262 bg = &bnx2fc_global;
2263 skb_queue_head_init(&bg->fcoe_rx_list);
2264 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2265 (void *)bg,
2266 "bnx2fc_l2_thread");
2267 if (IS_ERR(l2_thread)) {
2268 rc = PTR_ERR(l2_thread);
2269 goto free_wq;
2270 }
2271 wake_up_process(l2_thread);
2272 spin_lock_bh(&bg->fcoe_rx_list.lock);
2273 bg->thread = l2_thread;
2274 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2275
2276 for_each_possible_cpu(cpu) {
2277 p = &per_cpu(bnx2fc_percpu, cpu);
2278 INIT_LIST_HEAD(&p->work_list);
2279 spin_lock_init(&p->fp_work_lock);
2280 }
2281
2282 for_each_online_cpu(cpu) {
2283 bnx2fc_percpu_thread_create(cpu);
2284 }
2285
2286 /* Initialize per CPU interrupt thread */
2287 register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2288
2289 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2290
2291 return 0;
2292
2293 free_wq:
2294 destroy_workqueue(bnx2fc_wq);
2295 release_bt:
2296 bnx2fc_release_transport();
2297 detach_ft:
2298 fcoe_transport_detach(&bnx2fc_transport);
2299 out:
2300 return rc;
2301 }
2302
2303 static void __exit bnx2fc_mod_exit(void)
2304 {
2305 LIST_HEAD(to_be_deleted);
2306 struct bnx2fc_hba *hba, *next;
2307 struct fcoe_percpu_s *bg;
2308 struct task_struct *l2_thread;
2309 struct sk_buff *skb;
2310 unsigned int cpu = 0;
2311
2312 /*
2313 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2314 * it will have higher precedence than bnx2fc_dev_lock.
2315 * unregister_device() cannot be called with bnx2fc_dev_lock
2316 * held.
2317 */
2318 mutex_lock(&bnx2fc_dev_lock);
2319 list_splice(&adapter_list, &to_be_deleted);
2320 INIT_LIST_HEAD(&adapter_list);
2321 adapter_count = 0;
2322 mutex_unlock(&bnx2fc_dev_lock);
2323
2324 /* Unregister with cnic */
2325 list_for_each_entry_safe(hba, next, &to_be_deleted, link) {
2326 list_del_init(&hba->link);
2327 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p, kref = %d\n",
2328 hba, atomic_read(&hba->kref.refcount));
2329 bnx2fc_ulp_stop(hba);
2330 /* unregister cnic device */
2331 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2332 &hba->reg_with_cnic))
2333 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2334 bnx2fc_interface_destroy(hba);
2335 }
2336 cnic_unregister_driver(CNIC_ULP_FCOE);
2337
2338 /* Destroy global thread */
2339 bg = &bnx2fc_global;
2340 spin_lock_bh(&bg->fcoe_rx_list.lock);
2341 l2_thread = bg->thread;
2342 bg->thread = NULL;
2343 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2344 kfree_skb(skb);
2345
2346 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2347
2348 if (l2_thread)
2349 kthread_stop(l2_thread);
2350
2351 unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2352
2353 /* Destroy per cpu threads */
2354 for_each_online_cpu(cpu) {
2355 bnx2fc_percpu_thread_destroy(cpu);
2356 }
2357
2358 destroy_workqueue(bnx2fc_wq);
2359 /*
2360 * detach from scsi transport
2361 * must happen after all destroys are done
2362 */
2363 bnx2fc_release_transport();
2364
2365 /* detach from fcoe transport */
2366 fcoe_transport_detach(&bnx2fc_transport);
2367 }
2368
2369 module_init(bnx2fc_mod_init);
2370 module_exit(bnx2fc_mod_exit);
2371
2372 static struct fc_function_template bnx2fc_transport_function = {
2373 .show_host_node_name = 1,
2374 .show_host_port_name = 1,
2375 .show_host_supported_classes = 1,
2376 .show_host_supported_fc4s = 1,
2377 .show_host_active_fc4s = 1,
2378 .show_host_maxframe_size = 1,
2379
2380 .show_host_port_id = 1,
2381 .show_host_supported_speeds = 1,
2382 .get_host_speed = fc_get_host_speed,
2383 .show_host_speed = 1,
2384 .show_host_port_type = 1,
2385 .get_host_port_state = fc_get_host_port_state,
2386 .show_host_port_state = 1,
2387 .show_host_symbolic_name = 1,
2388
2389 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2390 sizeof(struct bnx2fc_rport)),
2391 .show_rport_maxframe_size = 1,
2392 .show_rport_supported_classes = 1,
2393
2394 .show_host_fabric_name = 1,
2395 .show_starget_node_name = 1,
2396 .show_starget_port_name = 1,
2397 .show_starget_port_id = 1,
2398 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2399 .show_rport_dev_loss_tmo = 1,
2400 .get_fc_host_stats = bnx2fc_get_host_stats,
2401
2402 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2403
2404 .terminate_rport_io = fc_rport_terminate_io,
2405
2406 .vport_create = bnx2fc_vport_create,
2407 .vport_delete = bnx2fc_vport_destroy,
2408 .vport_disable = bnx2fc_vport_disable,
2409 };
2410
2411 static struct fc_function_template bnx2fc_vport_xport_function = {
2412 .show_host_node_name = 1,
2413 .show_host_port_name = 1,
2414 .show_host_supported_classes = 1,
2415 .show_host_supported_fc4s = 1,
2416 .show_host_active_fc4s = 1,
2417 .show_host_maxframe_size = 1,
2418
2419 .show_host_port_id = 1,
2420 .show_host_supported_speeds = 1,
2421 .get_host_speed = fc_get_host_speed,
2422 .show_host_speed = 1,
2423 .show_host_port_type = 1,
2424 .get_host_port_state = fc_get_host_port_state,
2425 .show_host_port_state = 1,
2426 .show_host_symbolic_name = 1,
2427
2428 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2429 sizeof(struct bnx2fc_rport)),
2430 .show_rport_maxframe_size = 1,
2431 .show_rport_supported_classes = 1,
2432
2433 .show_host_fabric_name = 1,
2434 .show_starget_node_name = 1,
2435 .show_starget_port_name = 1,
2436 .show_starget_port_id = 1,
2437 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2438 .show_rport_dev_loss_tmo = 1,
2439 .get_fc_host_stats = fc_get_host_stats,
2440 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2441 .terminate_rport_io = fc_rport_terminate_io,
2442 };
2443
2444 /**
2445 * scsi_host_template structure used while registering with SCSI-ml
2446 */
2447 static struct scsi_host_template bnx2fc_shost_template = {
2448 .module = THIS_MODULE,
2449 .name = "Broadcom Offload FCoE Initiator",
2450 .queuecommand = bnx2fc_queuecommand,
2451 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2452 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2453 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2454 .eh_host_reset_handler = fc_eh_host_reset,
2455 .slave_alloc = fc_slave_alloc,
2456 .change_queue_depth = fc_change_queue_depth,
2457 .change_queue_type = fc_change_queue_type,
2458 .this_id = -1,
2459 .cmd_per_lun = 3,
2460 .can_queue = BNX2FC_CAN_QUEUE,
2461 .use_clustering = ENABLE_CLUSTERING,
2462 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2463 .max_sectors = 512,
2464 };
2465
2466 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2467 .frame_send = bnx2fc_xmit,
2468 .elsct_send = bnx2fc_elsct_send,
2469 .fcp_abort_io = bnx2fc_abort_io,
2470 .fcp_cleanup = bnx2fc_cleanup,
2471 .rport_event_callback = bnx2fc_rport_event_handler,
2472 };
2473
2474 /**
2475 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2476 * structure carrying callback function pointers
2477 */
2478 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2479 .owner = THIS_MODULE,
2480 .cnic_init = bnx2fc_ulp_init,
2481 .cnic_exit = bnx2fc_ulp_exit,
2482 .cnic_start = bnx2fc_ulp_start,
2483 .cnic_stop = bnx2fc_ulp_stop,
2484 .indicate_kcqes = bnx2fc_indicate_kcqe,
2485 .indicate_netevent = bnx2fc_indicate_netevent,
2486 };
ubuntu-bionic-kernel mirror