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ethtool: Call ethtool's get/set_settings callbacks with cleaned data
[deliverable/linux.git] / drivers / scsi / bnx2fc / bnx2fc_fcoe.c
CommitLineData
853e2bd2
BG		 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
17static struct list_head adapter_list;
18static u32 adapter_count;
19static DEFINE_MUTEX(bnx2fc_dev_lock);
20DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
21
22#define DRV_MODULE_NAME "bnx2fc"
23#define DRV_MODULE_VERSION BNX2FC_VERSION
d9f7f37b 24#define DRV_MODULE_RELDATE "Mar 17, 2011"
853e2bd2
BG		 25
26
27static char version[] __devinitdata =
28 "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \
29 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
30
31
32MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
33MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver");
34MODULE_LICENSE("GPL");
35MODULE_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
41static struct scsi_transport_template *bnx2fc_transport_template;
42static struct scsi_transport_template *bnx2fc_vport_xport_template;
43
44struct 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 */
49struct fcoe_percpu_s bnx2fc_global;
50DEFINE_SPINLOCK(bnx2fc_global_lock);
51
52static struct cnic_ulp_ops bnx2fc_cnic_cb;
53static struct libfc_function_template bnx2fc_libfc_fcn_templ;
54static struct scsi_host_template bnx2fc_shost_template;
55static struct fc_function_template bnx2fc_transport_function;
56static struct fc_function_template bnx2fc_vport_xport_function;
57static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
58static int bnx2fc_destroy(struct net_device *net_device);
59static int bnx2fc_enable(struct net_device *netdev);
60static int bnx2fc_disable(struct net_device *netdev);
61
62static void bnx2fc_recv_frame(struct sk_buff *skb);
63
64static void bnx2fc_start_disc(struct bnx2fc_hba *hba);
65static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
66static int bnx2fc_net_config(struct fc_lport *lp);
67static int bnx2fc_lport_config(struct fc_lport *lport);
68static int bnx2fc_em_config(struct fc_lport *lport);
69static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
70static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
71static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
72static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
73static struct fc_lport *bnx2fc_if_create(struct bnx2fc_hba *hba,
74 struct device *parent, int npiv);
75static void bnx2fc_destroy_work(struct work_struct *work);
76
77static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
78static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
79
80static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
81static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
82
83static void bnx2fc_port_shutdown(struct fc_lport *lport);
84static void bnx2fc_stop(struct bnx2fc_hba *hba);
85static int __init bnx2fc_mod_init(void);
86static void __exit bnx2fc_mod_exit(void);
87
88unsigned int bnx2fc_debug_level;
89module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
90
91static int bnx2fc_cpu_callback(struct notifier_block *nfb,
92 unsigned long action, void *hcpu);
93/* notification function for CPU hotplug events */
94static struct notifier_block bnx2fc_cpu_notifier = {
95 .notifier_call = bnx2fc_cpu_callback,
96};
97
98static 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
122int 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
132static 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
142static 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
168static 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 */
216static 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 */
376static 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;
426err:
427 kfree_skb(skb);
428 return -1;
429}
430
431static 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();
853e2bd2
BG		 440 spin_lock_bh(&bg->fcoe_rx_list.lock);
441 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
442 spin_unlock_bh(&bg->fcoe_rx_list.lock);
443 bnx2fc_recv_frame(skb);
444 spin_lock_bh(&bg->fcoe_rx_list.lock);
445 }
fee78712 446 __set_current_state(TASK_INTERRUPTIBLE);
853e2bd2 447 spin_unlock_bh(&bg->fcoe_rx_list.lock);
853e2bd2 448 }
fee78712 449 __set_current_state(TASK_RUNNING);
853e2bd2
BG		 450 return 0;
451}
452
453
454static void bnx2fc_recv_frame(struct sk_buff *skb)
455{
456 u32 fr_len;
457 struct fc_lport *lport;
458 struct fcoe_rcv_info *fr;
459 struct fcoe_dev_stats *stats;
460 struct fc_frame_header *fh;
461 struct fcoe_crc_eof crc_eof;
462 struct fc_frame *fp;
463 struct fc_lport *vn_port;
464 struct fcoe_port *port;
465 u8 *mac = NULL;
466 u8 *dest_mac = NULL;
467 struct fcoe_hdr *hp;
468
469 fr = fcoe_dev_from_skb(skb);
470 lport = fr->fr_dev;
471 if (unlikely(lport == NULL)) {
472 printk(KERN_ALERT PFX "Invalid lport struct\n");
473 kfree_skb(skb);
474 return;
475 }
476
477 if (skb_is_nonlinear(skb))
478 skb_linearize(skb);
479 mac = eth_hdr(skb)->h_source;
480 dest_mac = eth_hdr(skb)->h_dest;
481
482 /* Pull the header */
483 hp = (struct fcoe_hdr *) skb_network_header(skb);
484 fh = (struct fc_frame_header *) skb_transport_header(skb);
485 skb_pull(skb, sizeof(struct fcoe_hdr));
486 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
487
488 stats = per_cpu_ptr(lport->dev_stats, get_cpu());
489 stats->RxFrames++;
490 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
491
492 fp = (struct fc_frame *)skb;
493 fc_frame_init(fp);
494 fr_dev(fp) = lport;
495 fr_sof(fp) = hp->fcoe_sof;
496 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
497 put_cpu();
498 kfree_skb(skb);
499 return;
500 }
501 fr_eof(fp) = crc_eof.fcoe_eof;
502 fr_crc(fp) = crc_eof.fcoe_crc32;
503 if (pskb_trim(skb, fr_len)) {
504 put_cpu();
505 kfree_skb(skb);
506 return;
507 }
508
509 fh = fc_frame_header_get(fp);
510
511 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
512 if (vn_port) {
513 port = lport_priv(vn_port);
514 if (compare_ether_addr(port->data_src_addr, dest_mac)
515 != 0) {
516 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
517 put_cpu();
518 kfree_skb(skb);
519 return;
520 }
521 }
522 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
523 fh->fh_type == FC_TYPE_FCP) {
524 /* Drop FCP data. We dont this in L2 path */
525 put_cpu();
526 kfree_skb(skb);
527 return;
528 }
529 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
530 fh->fh_type == FC_TYPE_ELS) {
531 switch (fc_frame_payload_op(fp)) {
532 case ELS_LOGO:
533 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
534 /* drop non-FIP LOGO */
535 put_cpu();
536 kfree_skb(skb);
537 return;
538 }
539 break;
540 }
541 }
542 if (le32_to_cpu(fr_crc(fp)) !=
543 ~crc32(~0, skb->data, fr_len)) {
544 if (stats->InvalidCRCCount < 5)
545 printk(KERN_WARNING PFX "dropping frame with "
546 "CRC error\n");
547 stats->InvalidCRCCount++;
548 put_cpu();
549 kfree_skb(skb);
550 return;
551 }
552 put_cpu();
553 fc_exch_recv(lport, fp);
554}
555
556/**
557 * bnx2fc_percpu_io_thread - thread per cpu for ios
558 *
559 * @arg: ptr to bnx2fc_percpu_info structure
560 */
561int bnx2fc_percpu_io_thread(void *arg)
562{
563 struct bnx2fc_percpu_s *p = arg;
564 struct bnx2fc_work *work, *tmp;
565 LIST_HEAD(work_list);
566
567 set_user_nice(current, -20);
568 set_current_state(TASK_INTERRUPTIBLE);
569 while (!kthread_should_stop()) {
570 schedule();
853e2bd2
BG		 571 spin_lock_bh(&p->fp_work_lock);
572 while (!list_empty(&p->work_list)) {
573 list_splice_init(&p->work_list, &work_list);
574 spin_unlock_bh(&p->fp_work_lock);
575
576 list_for_each_entry_safe(work, tmp, &work_list, list) {
577 list_del_init(&work->list);
578 bnx2fc_process_cq_compl(work->tgt, work->wqe);
579 kfree(work);
580 }
581
582 spin_lock_bh(&p->fp_work_lock);
583 }
fee78712 584 __set_current_state(TASK_INTERRUPTIBLE);
853e2bd2 585 spin_unlock_bh(&p->fp_work_lock);
853e2bd2 586 }
fee78712 587 __set_current_state(TASK_RUNNING);
853e2bd2
BG		 588
589 return 0;
590}
591
592static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
593{
594 struct fc_host_statistics *bnx2fc_stats;
595 struct fc_lport *lport = shost_priv(shost);
596 struct fcoe_port *port = lport_priv(lport);
597 struct bnx2fc_hba *hba = port->priv;
598 struct fcoe_statistics_params *fw_stats;
599 int rc = 0;
600
601 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
602 if (!fw_stats)
603 return NULL;
604
605 bnx2fc_stats = fc_get_host_stats(shost);
606
607 init_completion(&hba->stat_req_done);
608 if (bnx2fc_send_stat_req(hba))
609 return bnx2fc_stats;
610 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
611 if (!rc) {
612 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
613 return bnx2fc_stats;
614 }
615 bnx2fc_stats->invalid_crc_count += fw_stats->rx_stat1.fc_crc_cnt;
616 bnx2fc_stats->tx_frames += fw_stats->tx_stat.fcoe_tx_pkt_cnt;
617 bnx2fc_stats->tx_words += (fw_stats->tx_stat.fcoe_tx_byte_cnt) / 4;
618 bnx2fc_stats->rx_frames += fw_stats->rx_stat0.fcoe_rx_pkt_cnt;
619 bnx2fc_stats->rx_words += (fw_stats->rx_stat0.fcoe_rx_byte_cnt) / 4;
620
621 bnx2fc_stats->dumped_frames = 0;
622 bnx2fc_stats->lip_count = 0;
623 bnx2fc_stats->nos_count = 0;
624 bnx2fc_stats->loss_of_sync_count = 0;
625 bnx2fc_stats->loss_of_signal_count = 0;
626 bnx2fc_stats->prim_seq_protocol_err_count = 0;
627
628 return bnx2fc_stats;
629}
630
631static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
632{
633 struct fcoe_port *port = lport_priv(lport);
634 struct bnx2fc_hba *hba = port->priv;
635 struct Scsi_Host *shost = lport->host;
636 int rc = 0;
637
638 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
639 shost->max_lun = BNX2FC_MAX_LUN;
640 shost->max_id = BNX2FC_MAX_FCP_TGT;
641 shost->max_channel = 0;
642 if (lport->vport)
643 shost->transportt = bnx2fc_vport_xport_template;
644 else
645 shost->transportt = bnx2fc_transport_template;
646
647 /* Add the new host to SCSI-ml */
648 rc = scsi_add_host(lport->host, dev);
649 if (rc) {
650 printk(KERN_ERR PFX "Error on scsi_add_host\n");
651 return rc;
652 }
653 if (!lport->vport)
654 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
655 sprintf(fc_host_symbolic_name(lport->host), "%s v%s over %s",
656 BNX2FC_NAME, BNX2FC_VERSION,
657 hba->netdev->name);
658
659 return 0;
660}
661
853e2bd2
BG		 662static void bnx2fc_link_speed_update(struct fc_lport *lport)
663{
664 struct fcoe_port *port = lport_priv(lport);
665 struct bnx2fc_hba *hba = port->priv;
666 struct net_device *netdev = hba->netdev;
8ae6daca 667 struct ethtool_cmd ecmd;
853e2bd2
BG		 668
669 if (!dev_ethtool_get_settings(netdev, &ecmd)) {
670 lport->link_supported_speeds &=
671 ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT);
672 if (ecmd.supported & (SUPPORTED_1000baseT_Half |
673 SUPPORTED_1000baseT_Full))
674 lport->link_supported_speeds |= FC_PORTSPEED_1GBIT;
675 if (ecmd.supported & SUPPORTED_10000baseT_Full)
676 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
677
8ae6daca
DD		 678 switch (ethtool_cmd_speed(&ecmd)) {
679 case SPEED_1000:
853e2bd2 680 lport->link_speed = FC_PORTSPEED_1GBIT;
8ae6daca
DD		 681 break;
682 case SPEED_10000:
853e2bd2 683 lport->link_speed = FC_PORTSPEED_10GBIT;
8ae6daca
DD		 684 break;
685 }
853e2bd2 686 }
853e2bd2
BG		 687}
688static int bnx2fc_link_ok(struct fc_lport *lport)
689{
690 struct fcoe_port *port = lport_priv(lport);
691 struct bnx2fc_hba *hba = port->priv;
692 struct net_device *dev = hba->phys_dev;
693 int rc = 0;
694
695 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
696 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
697 else {
698 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
699 rc = -1;
700 }
701 return rc;
702}
703
704/**
705 * bnx2fc_get_link_state - get network link state
706 *
707 * @hba: adapter instance pointer
708 *
709 * updates adapter structure flag based on netdev state
710 */
711void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
712{
713 if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state))
714 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
715 else
716 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
717}
718
719static int bnx2fc_net_config(struct fc_lport *lport)
720{
721 struct bnx2fc_hba *hba;
722 struct fcoe_port *port;
723 u64 wwnn, wwpn;
724
725 port = lport_priv(lport);
726 hba = port->priv;
727
728 /* require support for get_pauseparam ethtool op. */
729 if (!hba->phys_dev->ethtool_ops ||
730 !hba->phys_dev->ethtool_ops->get_pauseparam)
731 return -EOPNOTSUPP;
732
1294bfe6 733 if (fc_set_mfs(lport, BNX2FC_MFS))
853e2bd2
BG		 734 return -EINVAL;
735
736 skb_queue_head_init(&port->fcoe_pending_queue);
737 port->fcoe_pending_queue_active = 0;
738 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
739
740 bnx2fc_link_speed_update(lport);
741
742 if (!lport->vport) {
743 wwnn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 1, 0);
744 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
745 fc_set_wwnn(lport, wwnn);
746
747 wwpn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 2, 0);
748 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
749 fc_set_wwpn(lport, wwpn);
750 }
751
752 return 0;
753}
754
755static void bnx2fc_destroy_timer(unsigned long data)
756{
757 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
758
759 BNX2FC_HBA_DBG(hba->ctlr.lp, "ERROR:bnx2fc_destroy_timer - "
760 "Destroy compl not received!!\n");
761 hba->flags |= BNX2FC_FLAG_DESTROY_CMPL;
762 wake_up_interruptible(&hba->destroy_wait);
763}
764
765/**
766 * bnx2fc_indicate_netevent - Generic netdev event handler
767 *
768 * @context: adapter structure pointer
769 * @event: event type
770 *
771 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
772 * NETDEV_CHANGE_MTU events
773 */
774static void bnx2fc_indicate_netevent(void *context, unsigned long event)
775{
776 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
777 struct fc_lport *lport = hba->ctlr.lp;
778 struct fc_lport *vport;
779 u32 link_possible = 1;
780
781 if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
782 BNX2FC_MISC_DBG("driver not ready. event=%s %ld\n",
783 hba->netdev->name, event);
784 return;
785 }
786
787 /*
788 * ASSUMPTION:
789 * indicate_netevent cannot be called from cnic unless bnx2fc
790 * does register_device
791 */
792 BUG_ON(!lport);
793
794 BNX2FC_HBA_DBG(lport, "enter netevent handler - event=%s %ld\n",
795 hba->netdev->name, event);
796
797 switch (event) {
798 case NETDEV_UP:
799 BNX2FC_HBA_DBG(lport, "Port up, adapter_state = %ld\n",
800 hba->adapter_state);
801 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
802 printk(KERN_ERR "indicate_netevent: "\
803 "adapter is not UP!!\n");
853e2bd2
BG		 804 break;
805
806 case NETDEV_DOWN:
807 BNX2FC_HBA_DBG(lport, "Port down\n");
808 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
809 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
810 link_possible = 0;
811 break;
812
813 case NETDEV_GOING_DOWN:
814 BNX2FC_HBA_DBG(lport, "Port going down\n");
815 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
816 link_possible = 0;
817 break;
818
819 case NETDEV_CHANGE:
820 BNX2FC_HBA_DBG(lport, "NETDEV_CHANGE\n");
821 break;
822
823 default:
824 printk(KERN_ERR PFX "Unkonwn netevent %ld", event);
825 return;
826 }
827
828 bnx2fc_link_speed_update(lport);
829
830 if (link_possible && !bnx2fc_link_ok(lport)) {
831 printk(KERN_ERR "indicate_netevent: call ctlr_link_up\n");
832 fcoe_ctlr_link_up(&hba->ctlr);
833 } else {
834 printk(KERN_ERR "indicate_netevent: call ctlr_link_down\n");
835 if (fcoe_ctlr_link_down(&hba->ctlr)) {
836 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
837 mutex_lock(&lport->lp_mutex);
838 list_for_each_entry(vport, &lport->vports, list)
839 fc_host_port_type(vport->host) =
840 FC_PORTTYPE_UNKNOWN;
841 mutex_unlock(&lport->lp_mutex);
842 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
843 per_cpu_ptr(lport->dev_stats,
844 get_cpu())->LinkFailureCount++;
845 put_cpu();
846 fcoe_clean_pending_queue(lport);
847
848 init_waitqueue_head(&hba->shutdown_wait);
849 BNX2FC_HBA_DBG(lport, "indicate_netevent "
850 "num_ofld_sess = %d\n",
851 hba->num_ofld_sess);
852 hba->wait_for_link_down = 1;
853 BNX2FC_HBA_DBG(lport, "waiting for uploads to "
854 "compl proc = %s\n",
855 current->comm);
856 wait_event_interruptible(hba->shutdown_wait,
857 (hba->num_ofld_sess == 0));
858 BNX2FC_HBA_DBG(lport, "wakeup - num_ofld_sess = %d\n",
859 hba->num_ofld_sess);
860 hba->wait_for_link_down = 0;
861
862 if (signal_pending(current))
863 flush_signals(current);
864 }
865 }
866}
867
868static int bnx2fc_libfc_config(struct fc_lport *lport)
869{
870
871 /* Set the function pointers set by bnx2fc driver */
872 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
873 sizeof(struct libfc_function_template));
874 fc_elsct_init(lport);
875 fc_exch_init(lport);
876 fc_rport_init(lport);
877 fc_disc_init(lport);
878 return 0;
879}
880
881static int bnx2fc_em_config(struct fc_lport *lport)
882{
883 struct fcoe_port *port = lport_priv(lport);
884 struct bnx2fc_hba *hba = port->priv;
885
886 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID,
887 FCOE_MAX_XID, NULL)) {
888 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
889 return -ENOMEM;
890 }
891
892 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID,
893 BNX2FC_MAX_XID);
894
895 if (!hba->cmd_mgr) {
896 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
897 fc_exch_mgr_free(lport);
898 return -ENOMEM;
899 }
900 return 0;
901}
902
903static int bnx2fc_lport_config(struct fc_lport *lport)
904{
905 lport->link_up = 0;
906 lport->qfull = 0;
907 lport->max_retry_count = 3;
908 lport->max_rport_retry_count = 3;
909 lport->e_d_tov = 2 * 1000;
910 lport->r_a_tov = 10 * 1000;
911
912 /* REVISIT: enable when supporting tape devices
913 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
914 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
915 */
916 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS);
917 lport->does_npiv = 1;
918
919 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
920 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
921
922 /* alloc stats structure */
923 if (fc_lport_init_stats(lport))
924 return -ENOMEM;
925
926 /* Finish fc_lport configuration */
927 fc_lport_config(lport);
928
929 return 0;
930}
931
932/**
933 * bnx2fc_fip_recv - handle a received FIP frame.
934 *
935 * @skb: the received skb
936 * @dev: associated &net_device
937 * @ptype: the &packet_type structure which was used to register this handler.
938 * @orig_dev: original receive &net_device, in case @ dev is a bond.
939 *
940 * Returns: 0 for success
941 */
942static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
943 struct packet_type *ptype,
944 struct net_device *orig_dev)
945{
946 struct bnx2fc_hba *hba;
947 hba = container_of(ptype, struct bnx2fc_hba, fip_packet_type);
948 fcoe_ctlr_recv(&hba->ctlr, skb);
949 return 0;
950}
951
952/**
953 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
954 *
955 * @fip: FCoE controller.
956 * @old: Unicast MAC address to delete if the MAC is non-zero.
957 * @new: Unicast MAC address to add.
958 *
959 * Remove any previously-set unicast MAC filter.
960 * Add secondary FCoE MAC address filter for our OUI.
961 */
962static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
963{
964 struct fcoe_port *port = lport_priv(lport);
965
966 memcpy(port->data_src_addr, addr, ETH_ALEN);
967}
968
969/**
970 * bnx2fc_get_src_mac - return the ethernet source address for an lport
971 *
972 * @lport: libfc port
973 */
974static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
975{
976 struct fcoe_port *port;
977
978 port = (struct fcoe_port *)lport_priv(lport);
979 return port->data_src_addr;
980}
981
982/**
983 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
984 *
985 * @fip: FCoE controller.
986 * @skb: FIP Packet.
987 */
988static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
989{
990 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
991 dev_queue_xmit(skb);
992}
993
994static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
995{
996 struct Scsi_Host *shost = vport_to_shost(vport);
997 struct fc_lport *n_port = shost_priv(shost);
998 struct fcoe_port *port = lport_priv(n_port);
999 struct bnx2fc_hba *hba = port->priv;
1000 struct net_device *netdev = hba->netdev;
1001 struct fc_lport *vn_port;
1002
1003 if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1004 printk(KERN_ERR PFX "vn ports cannot be created on"
1005 "this hba\n");
1006 return -EIO;
1007 }
1008 mutex_lock(&bnx2fc_dev_lock);
1009 vn_port = bnx2fc_if_create(hba, &vport->dev, 1);
1010 mutex_unlock(&bnx2fc_dev_lock);
1011
1012 if (IS_ERR(vn_port)) {
1013 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1014 netdev->name);
1015 return -EIO;
1016 }
1017
1018 if (disabled) {
1019 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1020 } else {
1021 vn_port->boot_time = jiffies;
1022 fc_lport_init(vn_port);
1023 fc_fabric_login(vn_port);
1024 fc_vport_setlink(vn_port);
1025 }
1026 return 0;
1027}
1028
1029static int bnx2fc_vport_destroy(struct fc_vport *vport)
1030{
1031 struct Scsi_Host *shost = vport_to_shost(vport);
1032 struct fc_lport *n_port = shost_priv(shost);
1033 struct fc_lport *vn_port = vport->dd_data;
1034 struct fcoe_port *port = lport_priv(vn_port);
1035
1036 mutex_lock(&n_port->lp_mutex);
1037 list_del(&vn_port->list);
1038 mutex_unlock(&n_port->lp_mutex);
1039 queue_work(bnx2fc_wq, &port->destroy_work);
1040 return 0;
1041}
1042
1043static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1044{
1045 struct fc_lport *lport = vport->dd_data;
1046
1047 if (disable) {
1048 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1049 fc_fabric_logoff(lport);
1050 } else {
1051 lport->boot_time = jiffies;
1052 fc_fabric_login(lport);
1053 fc_vport_setlink(lport);
1054 }
1055 return 0;
1056}
1057
1058
1059static int bnx2fc_netdev_setup(struct bnx2fc_hba *hba)
1060{
1061 struct net_device *netdev = hba->netdev;
1062 struct net_device *physdev = hba->phys_dev;
1063 struct netdev_hw_addr *ha;
1064 int sel_san_mac = 0;
1065
853e2bd2
BG		 1066 /* setup Source MAC Address */
1067 rcu_read_lock();
1068 for_each_dev_addr(physdev, ha) {
1069 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1070 ha->type);
1071 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1072 ha->addr[1], ha->addr[2], ha->addr[3],
1073 ha->addr[4], ha->addr[5]);
1074
1075 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1076 (is_valid_ether_addr(ha->addr))) {
1077 memcpy(hba->ctlr.ctl_src_addr, ha->addr, ETH_ALEN);
1078 sel_san_mac = 1;
1079 BNX2FC_MISC_DBG("Found SAN MAC\n");
1080 }
1081 }
1082 rcu_read_unlock();
1083
1084 if (!sel_san_mac)
1085 return -ENODEV;
1086
1087 hba->fip_packet_type.func = bnx2fc_fip_recv;
1088 hba->fip_packet_type.type = htons(ETH_P_FIP);
1089 hba->fip_packet_type.dev = netdev;
1090 dev_add_pack(&hba->fip_packet_type);
1091
1092 hba->fcoe_packet_type.func = bnx2fc_rcv;
1093 hba->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1094 hba->fcoe_packet_type.dev = netdev;
1095 dev_add_pack(&hba->fcoe_packet_type);
1096
1097 return 0;
1098}
1099
1100static int bnx2fc_attach_transport(void)
1101{
1102 bnx2fc_transport_template =
1103 fc_attach_transport(&bnx2fc_transport_function);
1104
1105 if (bnx2fc_transport_template == NULL) {
1106 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1107 return -ENODEV;
1108 }
1109
1110 bnx2fc_vport_xport_template =
1111 fc_attach_transport(&bnx2fc_vport_xport_function);
1112 if (bnx2fc_vport_xport_template == NULL) {
1113 printk(KERN_ERR PFX
1114 "Failed to attach FC transport for vport\n");
1115 fc_release_transport(bnx2fc_transport_template);
1116 bnx2fc_transport_template = NULL;
1117 return -ENODEV;
1118 }
1119 return 0;
1120}
1121static void bnx2fc_release_transport(void)
1122{
1123 fc_release_transport(bnx2fc_transport_template);
1124 fc_release_transport(bnx2fc_vport_xport_template);
1125 bnx2fc_transport_template = NULL;
1126 bnx2fc_vport_xport_template = NULL;
1127}
1128
1129static void bnx2fc_interface_release(struct kref *kref)
1130{
1131 struct bnx2fc_hba *hba;
1132 struct net_device *netdev;
1133 struct net_device *phys_dev;
1134
1135 hba = container_of(kref, struct bnx2fc_hba, kref);
1136 BNX2FC_HBA_DBG(hba->ctlr.lp, "Interface is being released\n");
1137
1138 netdev = hba->netdev;
1139 phys_dev = hba->phys_dev;
1140
1141 /* tear-down FIP controller */
1142 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done))
1143 fcoe_ctlr_destroy(&hba->ctlr);
1144
1145 /* Free the command manager */
1146 if (hba->cmd_mgr) {
1147 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1148 hba->cmd_mgr = NULL;
1149 }
1150 dev_put(netdev);
1151 module_put(THIS_MODULE);
1152}
1153
1154static inline void bnx2fc_interface_get(struct bnx2fc_hba *hba)
1155{
1156 kref_get(&hba->kref);
1157}
1158
1159static inline void bnx2fc_interface_put(struct bnx2fc_hba *hba)
1160{
1161 kref_put(&hba->kref, bnx2fc_interface_release);
1162}
1163static void bnx2fc_interface_destroy(struct bnx2fc_hba *hba)
1164{
1165 bnx2fc_unbind_pcidev(hba);
1166 kfree(hba);
1167}
1168
1169/**
1170 * bnx2fc_interface_create - create a new fcoe instance
1171 *
1172 * @cnic: pointer to cnic device
1173 *
1174 * Creates a new FCoE instance on the given device which include allocating
1175 * hba structure, scsi_host and lport structures.
1176 */
1177static struct bnx2fc_hba *bnx2fc_interface_create(struct cnic_dev *cnic)
1178{
1179 struct bnx2fc_hba *hba;
1180 int rc;
1181
1182 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1183 if (!hba) {
1184 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1185 return NULL;
1186 }
1187 spin_lock_init(&hba->hba_lock);
1188 mutex_init(&hba->hba_mutex);
1189
1190 hba->cnic = cnic;
1191 rc = bnx2fc_bind_pcidev(hba);
1192 if (rc)
1193 goto bind_err;
1194 hba->phys_dev = cnic->netdev;
1195 /* will get overwritten after we do vlan discovery */
1196 hba->netdev = hba->phys_dev;
1197
1198 init_waitqueue_head(&hba->shutdown_wait);
1199 init_waitqueue_head(&hba->destroy_wait);
1200
1201 return hba;
1202bind_err:
1203 printk(KERN_ERR PFX "create_interface: bind error\n");
1204 kfree(hba);
1205 return NULL;
1206}
1207
1208static int bnx2fc_interface_setup(struct bnx2fc_hba *hba,
1209 enum fip_state fip_mode)
1210{
1211 int rc = 0;
1212 struct net_device *netdev = hba->netdev;
1213 struct fcoe_ctlr *fip = &hba->ctlr;
1214
1215 dev_hold(netdev);
1216 kref_init(&hba->kref);
1217
1218 hba->flags = 0;
1219
1220 /* Initialize FIP */
1221 memset(fip, 0, sizeof(*fip));
1222 fcoe_ctlr_init(fip, fip_mode);
1223 hba->ctlr.send = bnx2fc_fip_send;
1224 hba->ctlr.update_mac = bnx2fc_update_src_mac;
1225 hba->ctlr.get_src_addr = bnx2fc_get_src_mac;
1226 set_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done);
1227
1228 rc = bnx2fc_netdev_setup(hba);
1229 if (rc)
1230 goto setup_err;
1231
1232 hba->next_conn_id = 0;
1233
1234 memset(hba->tgt_ofld_list, 0, sizeof(hba->tgt_ofld_list));
1235 hba->num_ofld_sess = 0;
1236
1237 return 0;
1238
1239setup_err:
1240 fcoe_ctlr_destroy(&hba->ctlr);
1241 dev_put(netdev);
1242 bnx2fc_interface_put(hba);
1243 return rc;
1244}
1245
1246/**
1247 * bnx2fc_if_create - Create FCoE instance on a given interface
1248 *
1249 * @hba: FCoE interface to create a local port on
1250 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1251 * @npiv: Indicates if the port is vport or not
1252 *
1253 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1254 *
1255 * Returns: Allocated fc_lport or an error pointer
1256 */
1257static struct fc_lport *bnx2fc_if_create(struct bnx2fc_hba *hba,
1258 struct device *parent, int npiv)
1259{
1260 struct fc_lport *lport = NULL;
1261 struct fcoe_port *port;
1262 struct Scsi_Host *shost;
1263 struct fc_vport *vport = dev_to_vport(parent);
1264 int rc = 0;
1265
1266 /* Allocate Scsi_Host structure */
1267 if (!npiv) {
1268 lport = libfc_host_alloc(&bnx2fc_shost_template,
1269 sizeof(struct fcoe_port));
1270 } else {
1271 lport = libfc_vport_create(vport,
1272 sizeof(struct fcoe_port));
1273 }
1274
1275 if (!lport) {
1276 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1277 return NULL;
1278 }
1279 shost = lport->host;
1280 port = lport_priv(lport);
1281 port->lport = lport;
1282 port->priv = hba;
1283 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1284
1285 /* Configure fcoe_port */
1286 rc = bnx2fc_lport_config(lport);
1287 if (rc)
1288 goto lp_config_err;
1289
1290 if (npiv) {
1291 vport = dev_to_vport(parent);
1292 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1293 vport->node_name, vport->port_name);
1294 fc_set_wwnn(lport, vport->node_name);
1295 fc_set_wwpn(lport, vport->port_name);
1296 }
1297 /* Configure netdev and networking properties of the lport */
1298 rc = bnx2fc_net_config(lport);
1299 if (rc) {
1300 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1301 goto lp_config_err;
1302 }
1303
1304 rc = bnx2fc_shost_config(lport, parent);
1305 if (rc) {
1306 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1307 hba->netdev->name);
1308 goto lp_config_err;
1309 }
1310
1311 /* Initialize the libfc library */
1312 rc = bnx2fc_libfc_config(lport);
1313 if (rc) {
1314 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1315 goto shost_err;
1316 }
1317 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1318
1319 /* Allocate exchange manager */
1320 if (!npiv) {
1321 rc = bnx2fc_em_config(lport);
1322 if (rc) {
1323 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1324 goto shost_err;
1325 }
1326 }
1327
1328 bnx2fc_interface_get(hba);
1329 return lport;
1330
1331shost_err:
1332 scsi_remove_host(shost);
1333lp_config_err:
1334 scsi_host_put(lport->host);
1335 return NULL;
1336}
1337
1338static void bnx2fc_netdev_cleanup(struct bnx2fc_hba *hba)
1339{
1340 /* Dont listen for Ethernet packets anymore */
1341 __dev_remove_pack(&hba->fcoe_packet_type);
1342 __dev_remove_pack(&hba->fip_packet_type);
1343 synchronize_net();
1344}
1345
1346static void bnx2fc_if_destroy(struct fc_lport *lport)
1347{
1348 struct fcoe_port *port = lport_priv(lport);
1349 struct bnx2fc_hba *hba = port->priv;
1350
1351 BNX2FC_HBA_DBG(hba->ctlr.lp, "ENTERED bnx2fc_if_destroy\n");
1352 /* Stop the transmit retry timer */
1353 del_timer_sync(&port->timer);
1354
1355 /* Free existing transmit skbs */
1356 fcoe_clean_pending_queue(lport);
1357
1358 bnx2fc_interface_put(hba);
1359
1360 /* Free queued packets for the receive thread */
1361 bnx2fc_clean_rx_queue(lport);
1362
1363 /* Detach from scsi-ml */
1364 fc_remove_host(lport->host);
1365 scsi_remove_host(lport->host);
1366
1367 /*
1368 * Note that only the physical lport will have the exchange manager.
1369 * for vports, this function is NOP
1370 */
1371 fc_exch_mgr_free(lport);
1372
1373 /* Free memory used by statistical counters */
1374 fc_lport_free_stats(lport);
1375
1376 /* Release Scsi_Host */
1377 scsi_host_put(lport->host);
1378}
1379
1380/**
1381 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1382 *
1383 * @buffer: The name of the Ethernet interface to be destroyed
1384 * @kp: The associated kernel parameter
1385 *
1386 * Called from sysfs.
1387 *
1388 * Returns: 0 for success
1389 */
1390static int bnx2fc_destroy(struct net_device *netdev)
1391{
1392 struct bnx2fc_hba *hba = NULL;
1393 struct net_device *phys_dev;
1394 int rc = 0;
1395
6702ca1d 1396 rtnl_lock();
853e2bd2
BG		 1397
1398 mutex_lock(&bnx2fc_dev_lock);
853e2bd2
BG		 1399 /* obtain physical netdev */
1400 if (netdev->priv_flags & IFF_802_1Q_VLAN)
1401 phys_dev = vlan_dev_real_dev(netdev);
1402 else {
1403 printk(KERN_ERR PFX "Not a vlan device\n");
1404 rc = -ENODEV;
1405 goto netdev_err;
1406 }
1407
1408 hba = bnx2fc_hba_lookup(phys_dev);
1409 if (!hba || !hba->ctlr.lp) {
1410 rc = -ENODEV;
1411 printk(KERN_ERR PFX "bnx2fc_destroy: hba or lport not found\n");
1412 goto netdev_err;
1413 }
1414
1415 if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1416 printk(KERN_ERR PFX "bnx2fc_destroy: Create not called\n");
1417 goto netdev_err;
1418 }
1419
1420 bnx2fc_netdev_cleanup(hba);
1421
1422 bnx2fc_stop(hba);
1423
1424 bnx2fc_if_destroy(hba->ctlr.lp);
1425
1426 destroy_workqueue(hba->timer_work_queue);
1427
1428 if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done))
1429 bnx2fc_fw_destroy(hba);
1430
1431 clear_bit(BNX2FC_CREATE_DONE, &hba->init_done);
1432netdev_err:
1433 mutex_unlock(&bnx2fc_dev_lock);
1434 rtnl_unlock();
1435 return rc;
1436}
1437
1438static void bnx2fc_destroy_work(struct work_struct *work)
1439{
1440 struct fcoe_port *port;
1441 struct fc_lport *lport;
1442
1443 port = container_of(work, struct fcoe_port, destroy_work);
1444 lport = port->lport;
1445
1446 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1447
1448 bnx2fc_port_shutdown(lport);
1449 rtnl_lock();
1450 mutex_lock(&bnx2fc_dev_lock);
1451 bnx2fc_if_destroy(lport);
1452 mutex_unlock(&bnx2fc_dev_lock);
1453 rtnl_unlock();
1454}
1455
1456static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1457{
1458 bnx2fc_free_fw_resc(hba);
1459 bnx2fc_free_task_ctx(hba);
1460}
1461
1462/**
1463 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1464 * pci structure
1465 *
1466 * @hba: Adapter instance
1467 */
1468static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1469{
1470 if (bnx2fc_setup_task_ctx(hba))
1471 goto mem_err;
1472
1473 if (bnx2fc_setup_fw_resc(hba))
1474 goto mem_err;
1475
1476 return 0;
1477mem_err:
1478 bnx2fc_unbind_adapter_devices(hba);
1479 return -ENOMEM;
1480}
1481
1482static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1483{
1484 struct cnic_dev *cnic;
1485
1486 if (!hba->cnic) {
1487 printk(KERN_ERR PFX "cnic is NULL\n");
1488 return -ENODEV;
1489 }
1490 cnic = hba->cnic;
1491 hba->pcidev = cnic->pcidev;
1492 if (hba->pcidev)
1493 pci_dev_get(hba->pcidev);
1494
1495 return 0;
1496}
1497
1498static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1499{
1500 if (hba->pcidev)
1501 pci_dev_put(hba->pcidev);
1502 hba->pcidev = NULL;
1503}
1504
1505
1506
1507/**
1508 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1509 *
1510 * @handle: transport handle pointing to adapter struture
1511 *
1512 * This function maps adapter structure to pcidev structure and initiates
1513 * firmware handshake to enable/initialize on-chip FCoE components.
1514 * This bnx2fc - cnic interface api callback is used after following
1515 * conditions are met -
1516 * a) underlying network interface is up (marked by event NETDEV_UP
1517 * from netdev
1518 * b) bnx2fc adatper structure is registered.
1519 */
1520static void bnx2fc_ulp_start(void *handle)
1521{
1522 struct bnx2fc_hba *hba = handle;
1523 struct fc_lport *lport = hba->ctlr.lp;
1524
1525 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1526 mutex_lock(&bnx2fc_dev_lock);
1527
1528 if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done))
1529 goto start_disc;
1530
1531 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done))
1532 bnx2fc_fw_init(hba);
1533
1534start_disc:
1535 mutex_unlock(&bnx2fc_dev_lock);
1536
1537 BNX2FC_MISC_DBG("bnx2fc started.\n");
1538
1539 /* Kick off Fabric discovery*/
1540 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1541 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1542 lport->tt.frame_send = bnx2fc_xmit;
1543 bnx2fc_start_disc(hba);
1544 }
1545}
1546
1547static void bnx2fc_port_shutdown(struct fc_lport *lport)
1548{
1549 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1550 fc_fabric_logoff(lport);
1551 fc_lport_destroy(lport);
1552}
1553
1554static void bnx2fc_stop(struct bnx2fc_hba *hba)
1555{
1556 struct fc_lport *lport;
1557 struct fc_lport *vport;
1558
1559 BNX2FC_MISC_DBG("ENTERED %s - init_done = %ld\n", __func__,
1560 hba->init_done);
1561 if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done) &&
1562 test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1563 lport = hba->ctlr.lp;
1564 bnx2fc_port_shutdown(lport);
1565 BNX2FC_HBA_DBG(lport, "bnx2fc_stop: waiting for %d "
1566 "offloaded sessions\n",
1567 hba->num_ofld_sess);
1568 wait_event_interruptible(hba->shutdown_wait,
1569 (hba->num_ofld_sess == 0));
1570 mutex_lock(&lport->lp_mutex);
1571 list_for_each_entry(vport, &lport->vports, list)
1572 fc_host_port_type(vport->host) = FC_PORTTYPE_UNKNOWN;
1573 mutex_unlock(&lport->lp_mutex);
1574 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1575 fcoe_ctlr_link_down(&hba->ctlr);
1576 fcoe_clean_pending_queue(lport);
1577
1578 mutex_lock(&hba->hba_mutex);
1579 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1580 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
1581
1582 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1583 mutex_unlock(&hba->hba_mutex);
1584 }
1585}
1586
1587static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1588{
1589#define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1590 int rc = -1;
1591 int i = HZ;
1592
1593 rc = bnx2fc_bind_adapter_devices(hba);
1594 if (rc) {
1595 printk(KERN_ALERT PFX
1596 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1597 goto err_out;
1598 }
1599
1600 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1601 if (rc) {
1602 printk(KERN_ALERT PFX
1603 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1604 goto err_unbind;
1605 }
1606
1607 /*
1608 * Wait until the adapter init message is complete, and adapter
1609 * state is UP.
1610 */
1611 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1612 msleep(BNX2FC_INIT_POLL_TIME);
1613
1614 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1615 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1616 "Ignoring...\n",
1617 hba->cnic->netdev->name);
1618 rc = -1;
1619 goto err_unbind;
1620 }
1621
1622
1623 /* Mark HBA to indicate that the FW INIT is done */
1624 set_bit(BNX2FC_FW_INIT_DONE, &hba->init_done);
1625 return 0;
1626
1627err_unbind:
1628 bnx2fc_unbind_adapter_devices(hba);
1629err_out:
1630 return rc;
1631}
1632
1633static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1634{
1635 if (test_and_clear_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1636 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1637 init_timer(&hba->destroy_timer);
1638 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1639 jiffies;
1640 hba->destroy_timer.function = bnx2fc_destroy_timer;
1641 hba->destroy_timer.data = (unsigned long)hba;
1642 add_timer(&hba->destroy_timer);
1643 wait_event_interruptible(hba->destroy_wait,
1644 (hba->flags &
1645 BNX2FC_FLAG_DESTROY_CMPL));
1646 /* This should never happen */
1647 if (signal_pending(current))
1648 flush_signals(current);
1649
1650 del_timer_sync(&hba->destroy_timer);
1651 }
1652 bnx2fc_unbind_adapter_devices(hba);
1653 }
1654}
1655
1656/**
1657 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1658 *
1659 * @handle: transport handle pointing to adapter structure
1660 *
1661 * Driver checks if adapter is already in shutdown mode, if not start
1662 * the shutdown process.
1663 */
1664static void bnx2fc_ulp_stop(void *handle)
1665{
1666 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)handle;
1667
1668 printk(KERN_ERR "ULP_STOP\n");
1669
1670 mutex_lock(&bnx2fc_dev_lock);
1671 bnx2fc_stop(hba);
1672 bnx2fc_fw_destroy(hba);
1673 mutex_unlock(&bnx2fc_dev_lock);
1674}
1675
1676static void bnx2fc_start_disc(struct bnx2fc_hba *hba)
1677{
1678 struct fc_lport *lport;
1679 int wait_cnt = 0;
1680
1681 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1682 /* Kick off FIP/FLOGI */
1683 if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1684 printk(KERN_ERR PFX "Init not done yet\n");
1685 return;
1686 }
1687
1688 lport = hba->ctlr.lp;
1689 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1690
1691 if (!bnx2fc_link_ok(lport)) {
1692 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1693 fcoe_ctlr_link_up(&hba->ctlr);
1694 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1695 set_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1696 }
1697
1698 /* wait for the FCF to be selected before issuing FLOGI */
1699 while (!hba->ctlr.sel_fcf) {
1700 msleep(250);
1701 /* give up after 3 secs */
1702 if (++wait_cnt > 12)
1703 break;
1704 }
1705 fc_lport_init(lport);
1706 fc_fabric_login(lport);
1707}
1708
1709
1710/**
1711 * bnx2fc_ulp_init - Initialize an adapter instance
1712 *
1713 * @dev : cnic device handle
1714 * Called from cnic_register_driver() context to initialize all
1715 * enumerated cnic devices. This routine allocates adapter structure
1716 * and other device specific resources.
1717 */
1718static void bnx2fc_ulp_init(struct cnic_dev *dev)
1719{
1720 struct bnx2fc_hba *hba;
1721 int rc = 0;
1722
1723 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1724 /* bnx2fc works only when bnx2x is loaded */
1725 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1726 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1727 " flags: %lx\n",
1728 dev->netdev->name, dev->flags);
1729 return;
1730 }
1731
1732 /* Configure FCoE interface */
1733 hba = bnx2fc_interface_create(dev);
1734 if (!hba) {
1735 printk(KERN_ERR PFX "hba initialization failed\n");
1736 return;
1737 }
1738
1739 /* Add HBA to the adapter list */
1740 mutex_lock(&bnx2fc_dev_lock);
1741 list_add_tail(&hba->link, &adapter_list);
1742 adapter_count++;
1743 mutex_unlock(&bnx2fc_dev_lock);
1744
1745 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1746 rc = dev->register_device(dev, CNIC_ULP_FCOE,
1747 (void *) hba);
1748 if (rc)
1749 printk(KERN_ALERT PFX "register_device failed, rc = %d\n", rc);
1750 else
1751 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1752}
1753
1754
1755static int bnx2fc_disable(struct net_device *netdev)
1756{
1757 struct bnx2fc_hba *hba;
1758 struct net_device *phys_dev;
1759 struct ethtool_drvinfo drvinfo;
1760 int rc = 0;
1761
6702ca1d 1762 rtnl_lock();
853e2bd2
BG		 1763
1764 mutex_lock(&bnx2fc_dev_lock);
1765
853e2bd2
BG		 1766 /* obtain physical netdev */
1767 if (netdev->priv_flags & IFF_802_1Q_VLAN)
1768 phys_dev = vlan_dev_real_dev(netdev);
1769 else {
1770 printk(KERN_ERR PFX "Not a vlan device\n");
1771 rc = -ENODEV;
1772 goto nodev;
1773 }
1774
1775 /* verify if the physical device is a netxtreme2 device */
1776 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1777 memset(&drvinfo, 0, sizeof(drvinfo));
1778 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1779 if (strcmp(drvinfo.driver, "bnx2x")) {
1780 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1781 rc = -ENODEV;
1782 goto nodev;
1783 }
1784 } else {
1785 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1786 rc = -ENODEV;
1787 goto nodev;
1788 }
1789
1790 printk(KERN_ERR PFX "phys_dev is netxtreme2 device\n");
1791
1792 /* obtain hba and initialize rest of the structure */
1793 hba = bnx2fc_hba_lookup(phys_dev);
1794 if (!hba || !hba->ctlr.lp) {
1795 rc = -ENODEV;
1796 printk(KERN_ERR PFX "bnx2fc_disable: hba or lport not found\n");
1797 } else {
1798 fcoe_ctlr_link_down(&hba->ctlr);
1799 fcoe_clean_pending_queue(hba->ctlr.lp);
1800 }
1801
1802nodev:
1803 mutex_unlock(&bnx2fc_dev_lock);
1804 rtnl_unlock();
1805 return rc;
1806}
1807
1808
1809static int bnx2fc_enable(struct net_device *netdev)
1810{
1811 struct bnx2fc_hba *hba;
1812 struct net_device *phys_dev;
1813 struct ethtool_drvinfo drvinfo;
1814 int rc = 0;
1815
6702ca1d 1816 rtnl_lock();
853e2bd2
BG		 1817
1818 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1819 mutex_lock(&bnx2fc_dev_lock);
1820
853e2bd2
BG		 1821 /* obtain physical netdev */
1822 if (netdev->priv_flags & IFF_802_1Q_VLAN)
1823 phys_dev = vlan_dev_real_dev(netdev);
1824 else {
1825 printk(KERN_ERR PFX "Not a vlan device\n");
1826 rc = -ENODEV;
1827 goto nodev;
1828 }
1829 /* verify if the physical device is a netxtreme2 device */
1830 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1831 memset(&drvinfo, 0, sizeof(drvinfo));
1832 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1833 if (strcmp(drvinfo.driver, "bnx2x")) {
1834 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1835 rc = -ENODEV;
1836 goto nodev;
1837 }
1838 } else {
1839 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1840 rc = -ENODEV;
1841 goto nodev;
1842 }
1843
1844 /* obtain hba and initialize rest of the structure */
1845 hba = bnx2fc_hba_lookup(phys_dev);
1846 if (!hba || !hba->ctlr.lp) {
1847 rc = -ENODEV;
1848 printk(KERN_ERR PFX "bnx2fc_enable: hba or lport not found\n");
1849 } else if (!bnx2fc_link_ok(hba->ctlr.lp))
1850 fcoe_ctlr_link_up(&hba->ctlr);
1851
1852nodev:
1853 mutex_unlock(&bnx2fc_dev_lock);
1854 rtnl_unlock();
1855 return rc;
1856}
1857
1858/**
1859 * bnx2fc_create - Create bnx2fc FCoE interface
1860 *
1861 * @buffer: The name of Ethernet interface to create on
1862 * @kp: The associated kernel param
1863 *
1864 * Called from sysfs.
1865 *
1866 * Returns: 0 for success
1867 */
1868static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
1869{
1870 struct bnx2fc_hba *hba;
1871 struct net_device *phys_dev;
1872 struct fc_lport *lport;
1873 struct ethtool_drvinfo drvinfo;
1874 int rc = 0;
1875 int vlan_id;
1876
1877 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
1878 if (fip_mode != FIP_MODE_FABRIC) {
1879 printk(KERN_ERR "fip mode not FABRIC\n");
1880 return -EIO;
1881 }
1882
6702ca1d
NS		 1883 rtnl_lock();
1884
853e2bd2
BG		 1885 mutex_lock(&bnx2fc_dev_lock);
1886
853e2bd2
BG		 1887 if (!try_module_get(THIS_MODULE)) {
1888 rc = -EINVAL;
1889 goto mod_err;
1890 }
1891
1892 /* obtain physical netdev */
1893 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
1894 phys_dev = vlan_dev_real_dev(netdev);
1895 vlan_id = vlan_dev_vlan_id(netdev);
1896 } else {
1897 printk(KERN_ERR PFX "Not a vlan device\n");
1898 rc = -EINVAL;
1899 goto netdev_err;
1900 }
1901 /* verify if the physical device is a netxtreme2 device */
1902 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
1903 memset(&drvinfo, 0, sizeof(drvinfo));
1904 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
1905 if (strcmp(drvinfo.driver, "bnx2x")) {
1906 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
1907 rc = -EINVAL;
1908 goto netdev_err;
1909 }
1910 } else {
1911 printk(KERN_ERR PFX "unable to obtain drv_info\n");
1912 rc = -EINVAL;
1913 goto netdev_err;
1914 }
1915
1916 /* obtain hba and initialize rest of the structure */
1917 hba = bnx2fc_hba_lookup(phys_dev);
1918 if (!hba) {
1919 rc = -ENODEV;
1920 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
1921 goto netdev_err;
1922 }
1923
1924 if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
1925 rc = bnx2fc_fw_init(hba);
1926 if (rc)
1927 goto netdev_err;
1928 }
1929
1930 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
1931 rc = -EEXIST;
1932 goto netdev_err;
1933 }
1934
1935 /* update netdev with vlan netdev */
1936 hba->netdev = netdev;
1937 hba->vlan_id = vlan_id;
1938 hba->vlan_enabled = 1;
1939
1940 rc = bnx2fc_interface_setup(hba, fip_mode);
1941 if (rc) {
1942 printk(KERN_ERR PFX "bnx2fc_interface_setup failed\n");
1943 goto ifput_err;
1944 }
1945
1946 hba->timer_work_queue =
1947 create_singlethread_workqueue("bnx2fc_timer_wq");
1948 if (!hba->timer_work_queue) {
1949 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
1950 rc = -EINVAL;
1951 goto ifput_err;
1952 }
1953
1954 lport = bnx2fc_if_create(hba, &hba->pcidev->dev, 0);
1955 if (!lport) {
1956 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
1957 netdev->name);
1958 bnx2fc_netdev_cleanup(hba);
1959 rc = -EINVAL;
1960 goto if_create_err;
1961 }
1962
1963 lport->boot_time = jiffies;
1964
1965 /* Make this master N_port */
1966 hba->ctlr.lp = lport;
1967
1968 set_bit(BNX2FC_CREATE_DONE, &hba->init_done);
1969 printk(KERN_ERR PFX "create: START DISC\n");
1970 bnx2fc_start_disc(hba);
1971 /*
1972 * Release from kref_init in bnx2fc_interface_setup, on success
1973 * lport should be holding a reference taken in bnx2fc_if_create
1974 */
1975 bnx2fc_interface_put(hba);
1976 /* put netdev that was held while calling dev_get_by_name */
1977 mutex_unlock(&bnx2fc_dev_lock);
1978 rtnl_unlock();
1979 return 0;
1980
1981if_create_err:
1982 destroy_workqueue(hba->timer_work_queue);
1983ifput_err:
1984 bnx2fc_interface_put(hba);
1985netdev_err:
1986 module_put(THIS_MODULE);
1987mod_err:
1988 mutex_unlock(&bnx2fc_dev_lock);
1989 rtnl_unlock();
1990 return rc;
1991}
1992
1993/**
1994 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc adapter instance
1995 *
1996 * @cnic: Pointer to cnic device instance
1997 *
1998 **/
1999static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2000{
2001 struct list_head *list;
2002 struct list_head *temp;
2003 struct bnx2fc_hba *hba;
2004
2005 /* Called with bnx2fc_dev_lock held */
2006 list_for_each_safe(list, temp, &adapter_list) {
2007 hba = (struct bnx2fc_hba *)list;
2008 if (hba->cnic == cnic)
2009 return hba;
2010 }
2011 return NULL;
2012}
2013
2014static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev)
2015{
2016 struct list_head *list;
2017 struct list_head *temp;
2018 struct bnx2fc_hba *hba;
2019
2020 /* Called with bnx2fc_dev_lock held */
2021 list_for_each_safe(list, temp, &adapter_list) {
2022 hba = (struct bnx2fc_hba *)list;
2023 if (hba->phys_dev == phys_dev)
2024 return hba;
2025 }
2026 printk(KERN_ERR PFX "hba_lookup: hba NULL\n");
2027 return NULL;
2028}
2029
2030/**
2031 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2032 *
2033 * @dev cnic device handle
2034 */
2035static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2036{
2037 struct bnx2fc_hba *hba;
2038
2039 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2040
2041 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2042 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2043 dev->netdev->name, dev->flags);
2044 return;
2045 }
2046
2047 mutex_lock(&bnx2fc_dev_lock);
2048 hba = bnx2fc_find_hba_for_cnic(dev);
2049 if (!hba) {
2050 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2051 dev);
2052 mutex_unlock(&bnx2fc_dev_lock);
2053 return;
2054 }
2055
2056 list_del_init(&hba->link);
2057 adapter_count--;
2058
2059 if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
2060 /* destroy not called yet, move to quiesced list */
2061 bnx2fc_netdev_cleanup(hba);
2062 bnx2fc_if_destroy(hba->ctlr.lp);
2063 }
2064 mutex_unlock(&bnx2fc_dev_lock);
2065
2066 bnx2fc_ulp_stop(hba);
2067 /* unregister cnic device */
2068 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2069 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2070 bnx2fc_interface_destroy(hba);
2071}
2072
2073/**
2074 * bnx2fc_fcoe_reset - Resets the fcoe
2075 *
2076 * @shost: shost the reset is from
2077 *
2078 * Returns: always 0
2079 */
2080static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2081{
2082 struct fc_lport *lport = shost_priv(shost);
2083 fc_lport_reset(lport);
2084 return 0;
2085}
2086
2087
2088static bool bnx2fc_match(struct net_device *netdev)
2089{
2090 mutex_lock(&bnx2fc_dev_lock);
2091 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2092 struct net_device *phys_dev = vlan_dev_real_dev(netdev);
2093
2094 if (bnx2fc_hba_lookup(phys_dev)) {
2095 mutex_unlock(&bnx2fc_dev_lock);
2096 return true;
2097 }
2098 }
2099 mutex_unlock(&bnx2fc_dev_lock);
2100 return false;
2101}
2102
2103
2104static struct fcoe_transport bnx2fc_transport = {
2105 .name = {"bnx2fc"},
2106 .attached = false,
2107 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2108 .match = bnx2fc_match,
2109 .create = bnx2fc_create,
2110 .destroy = bnx2fc_destroy,
2111 .enable = bnx2fc_enable,
2112 .disable = bnx2fc_disable,
2113};
2114
2115/**
2116 * bnx2fc_percpu_thread_create - Create a receive thread for an
2117 * online CPU
2118 *
2119 * @cpu: cpu index for the online cpu
2120 */
2121static void bnx2fc_percpu_thread_create(unsigned int cpu)
2122{
2123 struct bnx2fc_percpu_s *p;
2124 struct task_struct *thread;
2125
2126 p = &per_cpu(bnx2fc_percpu, cpu);
2127
2128 thread = kthread_create(bnx2fc_percpu_io_thread,
2129 (void *)p,
2130 "bnx2fc_thread/%d", cpu);
2131 /* bind thread to the cpu */
2132 if (likely(!IS_ERR(p->iothread))) {
2133 kthread_bind(thread, cpu);
2134 p->iothread = thread;
2135 wake_up_process(thread);
2136 }
2137}
2138
2139static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2140{
2141 struct bnx2fc_percpu_s *p;
2142 struct task_struct *thread;
2143 struct bnx2fc_work *work, *tmp;
2144 LIST_HEAD(work_list);
2145
2146 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2147
2148 /* Prevent any new work from being queued for this CPU */
2149 p = &per_cpu(bnx2fc_percpu, cpu);
2150 spin_lock_bh(&p->fp_work_lock);
2151 thread = p->iothread;
2152 p->iothread = NULL;
2153
2154
2155 /* Free all work in the list */
2156 list_for_each_entry_safe(work, tmp, &work_list, list) {
2157 list_del_init(&work->list);
2158 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2159 kfree(work);
2160 }
2161
2162 spin_unlock_bh(&p->fp_work_lock);
2163
2164 if (thread)
2165 kthread_stop(thread);
2166}
2167
2168/**
2169 * bnx2fc_cpu_callback - Handler for CPU hotplug events
2170 *
2171 * @nfb: The callback data block
2172 * @action: The event triggering the callback
2173 * @hcpu: The index of the CPU that the event is for
2174 *
2175 * This creates or destroys per-CPU data for fcoe
2176 *
2177 * Returns NOTIFY_OK always.
2178 */
2179static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2180 unsigned long action, void *hcpu)
2181{
2182 unsigned cpu = (unsigned long)hcpu;
2183
2184 switch (action) {
2185 case CPU_ONLINE:
2186 case CPU_ONLINE_FROZEN:
2187 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2188 bnx2fc_percpu_thread_create(cpu);
2189 break;
2190 case CPU_DEAD:
2191 case CPU_DEAD_FROZEN:
2192 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2193 bnx2fc_percpu_thread_destroy(cpu);
2194 break;
2195 default:
2196 break;
2197 }
2198 return NOTIFY_OK;
2199}
2200
2201/**
2202 * bnx2fc_mod_init - module init entry point
2203 *
2204 * Initialize driver wide global data structures, and register
2205 * with cnic module
2206 **/
2207static int __init bnx2fc_mod_init(void)
2208{
2209 struct fcoe_percpu_s *bg;
2210 struct task_struct *l2_thread;
2211 int rc = 0;
2212 unsigned int cpu = 0;
2213 struct bnx2fc_percpu_s *p;
2214
2215 printk(KERN_INFO PFX "%s", version);
2216
2217 /* register as a fcoe transport */
2218 rc = fcoe_transport_attach(&bnx2fc_transport);
2219 if (rc) {
2220 printk(KERN_ERR "failed to register an fcoe transport, check "
2221 "if libfcoe is loaded\n");
2222 goto out;
2223 }
2224
2225 INIT_LIST_HEAD(&adapter_list);
2226 mutex_init(&bnx2fc_dev_lock);
2227 adapter_count = 0;
2228
2229 /* Attach FC transport template */
2230 rc = bnx2fc_attach_transport();
2231 if (rc)
2232 goto detach_ft;
2233
2234 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2235 if (!bnx2fc_wq) {
2236 rc = -ENOMEM;
2237 goto release_bt;
2238 }
2239
2240 bg = &bnx2fc_global;
2241 skb_queue_head_init(&bg->fcoe_rx_list);
2242 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2243 (void *)bg,
2244 "bnx2fc_l2_thread");
2245 if (IS_ERR(l2_thread)) {
2246 rc = PTR_ERR(l2_thread);
2247 goto free_wq;
2248 }
2249 wake_up_process(l2_thread);
2250 spin_lock_bh(&bg->fcoe_rx_list.lock);
2251 bg->thread = l2_thread;
2252 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2253
2254 for_each_possible_cpu(cpu) {
2255 p = &per_cpu(bnx2fc_percpu, cpu);
2256 INIT_LIST_HEAD(&p->work_list);
2257 spin_lock_init(&p->fp_work_lock);
2258 }
2259
2260 for_each_online_cpu(cpu) {
2261 bnx2fc_percpu_thread_create(cpu);
2262 }
2263
2264 /* Initialize per CPU interrupt thread */
2265 register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2266
2267 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2268
2269 return 0;
2270
2271free_wq:
2272 destroy_workqueue(bnx2fc_wq);
2273release_bt:
2274 bnx2fc_release_transport();
2275detach_ft:
2276 fcoe_transport_detach(&bnx2fc_transport);
2277out:
2278 return rc;
2279}
2280
2281static void __exit bnx2fc_mod_exit(void)
2282{
2283 LIST_HEAD(to_be_deleted);
2284 struct bnx2fc_hba *hba, *next;
2285 struct fcoe_percpu_s *bg;
2286 struct task_struct *l2_thread;
2287 struct sk_buff *skb;
2288 unsigned int cpu = 0;
2289
2290 /*
2291 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2292 * it will have higher precedence than bnx2fc_dev_lock.
2293 * unregister_device() cannot be called with bnx2fc_dev_lock
2294 * held.
2295 */
2296 mutex_lock(&bnx2fc_dev_lock);
2297 list_splice(&adapter_list, &to_be_deleted);
2298 INIT_LIST_HEAD(&adapter_list);
2299 adapter_count = 0;
2300 mutex_unlock(&bnx2fc_dev_lock);
2301
2302 /* Unregister with cnic */
2303 list_for_each_entry_safe(hba, next, &to_be_deleted, link) {
2304 list_del_init(&hba->link);
2305 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p, kref = %d\n",
2306 hba, atomic_read(&hba->kref.refcount));
2307 bnx2fc_ulp_stop(hba);
2308 /* unregister cnic device */
2309 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2310 &hba->reg_with_cnic))
2311 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2312 bnx2fc_interface_destroy(hba);
2313 }
2314 cnic_unregister_driver(CNIC_ULP_FCOE);
2315
2316 /* Destroy global thread */
2317 bg = &bnx2fc_global;
2318 spin_lock_bh(&bg->fcoe_rx_list.lock);
2319 l2_thread = bg->thread;
2320 bg->thread = NULL;
2321 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2322 kfree_skb(skb);
2323
2324 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2325
2326 if (l2_thread)
2327 kthread_stop(l2_thread);
2328
2329 unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2330
2331 /* Destroy per cpu threads */
2332 for_each_online_cpu(cpu) {
2333 bnx2fc_percpu_thread_destroy(cpu);
2334 }
2335
2336 destroy_workqueue(bnx2fc_wq);
2337 /*
2338 * detach from scsi transport
2339 * must happen after all destroys are done
2340 */
2341 bnx2fc_release_transport();
2342
2343 /* detach from fcoe transport */
2344 fcoe_transport_detach(&bnx2fc_transport);
2345}
2346
2347module_init(bnx2fc_mod_init);
2348module_exit(bnx2fc_mod_exit);
2349
2350static struct fc_function_template bnx2fc_transport_function = {
2351 .show_host_node_name = 1,
2352 .show_host_port_name = 1,
2353 .show_host_supported_classes = 1,
2354 .show_host_supported_fc4s = 1,
2355 .show_host_active_fc4s = 1,
2356 .show_host_maxframe_size = 1,
2357
2358 .show_host_port_id = 1,
2359 .show_host_supported_speeds = 1,
2360 .get_host_speed = fc_get_host_speed,
2361 .show_host_speed = 1,
2362 .show_host_port_type = 1,
2363 .get_host_port_state = fc_get_host_port_state,
2364 .show_host_port_state = 1,
2365 .show_host_symbolic_name = 1,
2366
2367 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2368 sizeof(struct bnx2fc_rport)),
2369 .show_rport_maxframe_size = 1,
2370 .show_rport_supported_classes = 1,
2371
2372 .show_host_fabric_name = 1,
2373 .show_starget_node_name = 1,
2374 .show_starget_port_name = 1,
2375 .show_starget_port_id = 1,
2376 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2377 .show_rport_dev_loss_tmo = 1,
2378 .get_fc_host_stats = bnx2fc_get_host_stats,
2379
2380 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2381
2382 .terminate_rport_io = fc_rport_terminate_io,
2383
2384 .vport_create = bnx2fc_vport_create,
2385 .vport_delete = bnx2fc_vport_destroy,
2386 .vport_disable = bnx2fc_vport_disable,
2387};
2388
2389static struct fc_function_template bnx2fc_vport_xport_function = {
2390 .show_host_node_name = 1,
2391 .show_host_port_name = 1,
2392 .show_host_supported_classes = 1,
2393 .show_host_supported_fc4s = 1,
2394 .show_host_active_fc4s = 1,
2395 .show_host_maxframe_size = 1,
2396
2397 .show_host_port_id = 1,
2398 .show_host_supported_speeds = 1,
2399 .get_host_speed = fc_get_host_speed,
2400 .show_host_speed = 1,
2401 .show_host_port_type = 1,
2402 .get_host_port_state = fc_get_host_port_state,
2403 .show_host_port_state = 1,
2404 .show_host_symbolic_name = 1,
2405
2406 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2407 sizeof(struct bnx2fc_rport)),
2408 .show_rport_maxframe_size = 1,
2409 .show_rport_supported_classes = 1,
2410
2411 .show_host_fabric_name = 1,
2412 .show_starget_node_name = 1,
2413 .show_starget_port_name = 1,
2414 .show_starget_port_id = 1,
2415 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2416 .show_rport_dev_loss_tmo = 1,
2417 .get_fc_host_stats = fc_get_host_stats,
2418 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2419 .terminate_rport_io = fc_rport_terminate_io,
2420};
2421
2422/**
2423 * scsi_host_template structure used while registering with SCSI-ml
2424 */
2425static struct scsi_host_template bnx2fc_shost_template = {
2426 .module = THIS_MODULE,
2427 .name = "Broadcom Offload FCoE Initiator",
2428 .queuecommand = bnx2fc_queuecommand,
2429 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2430 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2431 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2432 .eh_host_reset_handler = fc_eh_host_reset,
2433 .slave_alloc = fc_slave_alloc,
2434 .change_queue_depth = fc_change_queue_depth,
2435 .change_queue_type = fc_change_queue_type,
2436 .this_id = -1,
2437 .cmd_per_lun = 3,
0ea5c275 2438 .can_queue = BNX2FC_CAN_QUEUE,
853e2bd2
BG		 2439 .use_clustering = ENABLE_CLUSTERING,
2440 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2441 .max_sectors = 512,
2442};
2443
2444static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2445 .frame_send = bnx2fc_xmit,
2446 .elsct_send = bnx2fc_elsct_send,
2447 .fcp_abort_io = bnx2fc_abort_io,
2448 .fcp_cleanup = bnx2fc_cleanup,
2449 .rport_event_callback = bnx2fc_rport_event_handler,
2450};
2451
2452/**
2453 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2454 * structure carrying callback function pointers
2455 */
2456static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2457 .owner = THIS_MODULE,
2458 .cnic_init = bnx2fc_ulp_init,
2459 .cnic_exit = bnx2fc_ulp_exit,
2460 .cnic_start = bnx2fc_ulp_start,
2461 .cnic_stop = bnx2fc_ulp_stop,
2462 .indicate_kcqes = bnx2fc_indicate_kcqe,
2463 .indicate_netevent = bnx2fc_indicate_netevent,
2464};
Linux kernel - Deliverables
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