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[thirdparty/kernel/stable.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 - 2013 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 struct list_head if_list;
19 static u32 adapter_count;
20 static DEFINE_MUTEX(bnx2fc_dev_lock);
21 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
22
23 #define DRV_MODULE_NAME "bnx2fc"
24 #define DRV_MODULE_VERSION BNX2FC_VERSION
25 #define DRV_MODULE_RELDATE "Dec 11, 2013"
26
27
28 static char version[] =
29 "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \
30 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
31
32
33 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
34 MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver");
35 MODULE_LICENSE("GPL");
36 MODULE_VERSION(DRV_MODULE_VERSION);
37
38 #define BNX2FC_MAX_QUEUE_DEPTH 256
39 #define BNX2FC_MIN_QUEUE_DEPTH 32
40 #define FCOE_WORD_TO_BYTE 4
41
42 static struct scsi_transport_template *bnx2fc_transport_template;
43 static struct scsi_transport_template *bnx2fc_vport_xport_template;
44
45 struct workqueue_struct *bnx2fc_wq;
46
47 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
48 * Here the io threads are per cpu but the l2 thread is just one
49 */
50 struct fcoe_percpu_s bnx2fc_global;
51 DEFINE_SPINLOCK(bnx2fc_global_lock);
52
53 static struct cnic_ulp_ops bnx2fc_cnic_cb;
54 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
55 static struct scsi_host_template bnx2fc_shost_template;
56 static struct fc_function_template bnx2fc_transport_function;
57 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
58 static struct fc_function_template bnx2fc_vport_xport_function;
59 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
60 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
61 static int bnx2fc_destroy(struct net_device *net_device);
62 static int bnx2fc_enable(struct net_device *netdev);
63 static int bnx2fc_disable(struct net_device *netdev);
64
65 /* fcoe_syfs control interface handlers */
66 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
67 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
68
69 static void bnx2fc_recv_frame(struct sk_buff *skb);
70
71 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
72 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
73 static int bnx2fc_lport_config(struct fc_lport *lport);
74 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
75 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
76 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
77 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
78 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
79 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
80 struct device *parent, int npiv);
81 static void bnx2fc_destroy_work(struct work_struct *work);
82
83 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
84 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
85 *phys_dev);
86 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
87 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
88
89 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
90 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
91
92 static void bnx2fc_port_shutdown(struct fc_lport *lport);
93 static void bnx2fc_stop(struct bnx2fc_interface *interface);
94 static int __init bnx2fc_mod_init(void);
95 static void __exit bnx2fc_mod_exit(void);
96
97 unsigned int bnx2fc_debug_level;
98 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
99
100 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
101 unsigned long action, void *hcpu);
102 /* notification function for CPU hotplug events */
103 static struct notifier_block bnx2fc_cpu_notifier = {
104 .notifier_call = bnx2fc_cpu_callback,
105 };
106
107 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
108 {
109 return ((struct bnx2fc_interface *)
110 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
111 }
112
113 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
114 {
115 struct fcoe_ctlr_device *ctlr_dev =
116 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
117 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
118 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
119
120 fcf_dev->vlan_id = fcoe->vlan_id;
121 }
122
123 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
124 {
125 struct fcoe_percpu_s *bg;
126 struct fcoe_rcv_info *fr;
127 struct sk_buff_head *list;
128 struct sk_buff *skb, *next;
129 struct sk_buff *head;
130
131 bg = &bnx2fc_global;
132 spin_lock_bh(&bg->fcoe_rx_list.lock);
133 list = &bg->fcoe_rx_list;
134 head = list->next;
135 for (skb = head; skb != (struct sk_buff *)list;
136 skb = next) {
137 next = skb->next;
138 fr = fcoe_dev_from_skb(skb);
139 if (fr->fr_dev == lp) {
140 __skb_unlink(skb, list);
141 kfree_skb(skb);
142 }
143 }
144 spin_unlock_bh(&bg->fcoe_rx_list.lock);
145 }
146
147 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
148 {
149 int rc;
150 spin_lock(&bnx2fc_global_lock);
151 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
152 spin_unlock(&bnx2fc_global_lock);
153
154 return rc;
155 }
156
157 static void bnx2fc_abort_io(struct fc_lport *lport)
158 {
159 /*
160 * This function is no-op for bnx2fc, but we do
161 * not want to leave it as NULL either, as libfc
162 * can call the default function which is
163 * fc_fcp_abort_io.
164 */
165 }
166
167 static void bnx2fc_cleanup(struct fc_lport *lport)
168 {
169 struct fcoe_port *port = lport_priv(lport);
170 struct bnx2fc_interface *interface = port->priv;
171 struct bnx2fc_hba *hba = interface->hba;
172 struct bnx2fc_rport *tgt;
173 int i;
174
175 BNX2FC_MISC_DBG("Entered %s\n", __func__);
176 mutex_lock(&hba->hba_mutex);
177 spin_lock_bh(&hba->hba_lock);
178 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
179 tgt = hba->tgt_ofld_list[i];
180 if (tgt) {
181 /* Cleanup IOs belonging to requested vport */
182 if (tgt->port == port) {
183 spin_unlock_bh(&hba->hba_lock);
184 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
185 bnx2fc_flush_active_ios(tgt);
186 spin_lock_bh(&hba->hba_lock);
187 }
188 }
189 }
190 spin_unlock_bh(&hba->hba_lock);
191 mutex_unlock(&hba->hba_mutex);
192 }
193
194 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
195 struct fc_frame *fp)
196 {
197 struct fc_rport_priv *rdata = tgt->rdata;
198 struct fc_frame_header *fh;
199 int rc = 0;
200
201 fh = fc_frame_header_get(fp);
202 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
203 "r_ctl = 0x%x\n", rdata->ids.port_id,
204 ntohs(fh->fh_ox_id), fh->fh_r_ctl);
205 if ((fh->fh_type == FC_TYPE_ELS) &&
206 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
207
208 switch (fc_frame_payload_op(fp)) {
209 case ELS_ADISC:
210 rc = bnx2fc_send_adisc(tgt, fp);
211 break;
212 case ELS_LOGO:
213 rc = bnx2fc_send_logo(tgt, fp);
214 break;
215 case ELS_RLS:
216 rc = bnx2fc_send_rls(tgt, fp);
217 break;
218 default:
219 break;
220 }
221 } else if ((fh->fh_type == FC_TYPE_BLS) &&
222 (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
223 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
224 else {
225 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
226 "rctl 0x%x thru non-offload path\n",
227 fh->fh_type, fh->fh_r_ctl);
228 return -ENODEV;
229 }
230 if (rc)
231 return -ENOMEM;
232 else
233 return 0;
234 }
235
236 /**
237 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
238 *
239 * @lport: the associated local port
240 * @fp: the fc_frame to be transmitted
241 */
242 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
243 {
244 struct ethhdr *eh;
245 struct fcoe_crc_eof *cp;
246 struct sk_buff *skb;
247 struct fc_frame_header *fh;
248 struct bnx2fc_interface *interface;
249 struct fcoe_ctlr *ctlr;
250 struct bnx2fc_hba *hba;
251 struct fcoe_port *port;
252 struct fcoe_hdr *hp;
253 struct bnx2fc_rport *tgt;
254 struct fc_stats *stats;
255 u8 sof, eof;
256 u32 crc;
257 unsigned int hlen, tlen, elen;
258 int wlen, rc = 0;
259
260 port = (struct fcoe_port *)lport_priv(lport);
261 interface = port->priv;
262 ctlr = bnx2fc_to_ctlr(interface);
263 hba = interface->hba;
264
265 fh = fc_frame_header_get(fp);
266
267 skb = fp_skb(fp);
268 if (!lport->link_up) {
269 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
270 kfree_skb(skb);
271 return 0;
272 }
273
274 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
275 if (!ctlr->sel_fcf) {
276 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
277 kfree_skb(skb);
278 return -EINVAL;
279 }
280 if (fcoe_ctlr_els_send(ctlr, lport, skb))
281 return 0;
282 }
283
284 sof = fr_sof(fp);
285 eof = fr_eof(fp);
286
287 /*
288 * Snoop the frame header to check if the frame is for
289 * an offloaded session
290 */
291 /*
292 * tgt_ofld_list access is synchronized using
293 * both hba mutex and hba lock. Atleast hba mutex or
294 * hba lock needs to be held for read access.
295 */
296
297 spin_lock_bh(&hba->hba_lock);
298 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
299 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
300 /* This frame is for offloaded session */
301 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
302 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
303 spin_unlock_bh(&hba->hba_lock);
304 rc = bnx2fc_xmit_l2_frame(tgt, fp);
305 if (rc != -ENODEV) {
306 kfree_skb(skb);
307 return rc;
308 }
309 } else {
310 spin_unlock_bh(&hba->hba_lock);
311 }
312
313 elen = sizeof(struct ethhdr);
314 hlen = sizeof(struct fcoe_hdr);
315 tlen = sizeof(struct fcoe_crc_eof);
316 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
317
318 skb->ip_summed = CHECKSUM_NONE;
319 crc = fcoe_fc_crc(fp);
320
321 /* copy port crc and eof to the skb buff */
322 if (skb_is_nonlinear(skb)) {
323 skb_frag_t *frag;
324 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
325 kfree_skb(skb);
326 return -ENOMEM;
327 }
328 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
329 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
330 } else {
331 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
332 }
333
334 memset(cp, 0, sizeof(*cp));
335 cp->fcoe_eof = eof;
336 cp->fcoe_crc32 = cpu_to_le32(~crc);
337 if (skb_is_nonlinear(skb)) {
338 kunmap_atomic(cp);
339 cp = NULL;
340 }
341
342 /* adjust skb network/transport offsets to match mac/fcoe/port */
343 skb_push(skb, elen + hlen);
344 skb_reset_mac_header(skb);
345 skb_reset_network_header(skb);
346 skb->mac_len = elen;
347 skb->protocol = htons(ETH_P_FCOE);
348 skb->dev = interface->netdev;
349
350 /* fill up mac and fcoe headers */
351 eh = eth_hdr(skb);
352 eh->h_proto = htons(ETH_P_FCOE);
353 if (ctlr->map_dest)
354 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
355 else
356 /* insert GW address */
357 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
358
359 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
360 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
361 else
362 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
363
364 hp = (struct fcoe_hdr *)(eh + 1);
365 memset(hp, 0, sizeof(*hp));
366 if (FC_FCOE_VER)
367 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
368 hp->fcoe_sof = sof;
369
370 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
371 if (lport->seq_offload && fr_max_payload(fp)) {
372 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
373 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
374 } else {
375 skb_shinfo(skb)->gso_type = 0;
376 skb_shinfo(skb)->gso_size = 0;
377 }
378
379 /*update tx stats */
380 stats = per_cpu_ptr(lport->stats, get_cpu());
381 stats->TxFrames++;
382 stats->TxWords += wlen;
383 put_cpu();
384
385 /* send down to lld */
386 fr_dev(fp) = lport;
387 if (port->fcoe_pending_queue.qlen)
388 fcoe_check_wait_queue(lport, skb);
389 else if (fcoe_start_io(skb))
390 fcoe_check_wait_queue(lport, skb);
391
392 return 0;
393 }
394
395 /**
396 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
397 *
398 * @skb: the receive socket buffer
399 * @dev: associated net device
400 * @ptype: context
401 * @olddev: last device
402 *
403 * This function receives the packet and builds FC frame and passes it up
404 */
405 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
406 struct packet_type *ptype, struct net_device *olddev)
407 {
408 struct fc_lport *lport;
409 struct bnx2fc_interface *interface;
410 struct fcoe_ctlr *ctlr;
411 struct fc_frame_header *fh;
412 struct fcoe_rcv_info *fr;
413 struct fcoe_percpu_s *bg;
414 unsigned short oxid;
415
416 interface = container_of(ptype, struct bnx2fc_interface,
417 fcoe_packet_type);
418 ctlr = bnx2fc_to_ctlr(interface);
419 lport = ctlr->lp;
420
421 if (unlikely(lport == NULL)) {
422 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
423 goto err;
424 }
425
426 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
427 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
428 goto err;
429 }
430
431 /*
432 * Check for minimum frame length, and make sure required FCoE
433 * and FC headers are pulled into the linear data area.
434 */
435 if (unlikely((skb->len < FCOE_MIN_FRAME) ||
436 !pskb_may_pull(skb, FCOE_HEADER_LEN)))
437 goto err;
438
439 skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
440 fh = (struct fc_frame_header *) skb_transport_header(skb);
441
442 oxid = ntohs(fh->fh_ox_id);
443
444 fr = fcoe_dev_from_skb(skb);
445 fr->fr_dev = lport;
446
447 bg = &bnx2fc_global;
448 spin_lock(&bg->fcoe_rx_list.lock);
449
450 __skb_queue_tail(&bg->fcoe_rx_list, skb);
451 if (bg->fcoe_rx_list.qlen == 1)
452 wake_up_process(bg->thread);
453
454 spin_unlock(&bg->fcoe_rx_list.lock);
455
456 return 0;
457 err:
458 kfree_skb(skb);
459 return -1;
460 }
461
462 static int bnx2fc_l2_rcv_thread(void *arg)
463 {
464 struct fcoe_percpu_s *bg = arg;
465 struct sk_buff *skb;
466
467 set_user_nice(current, MIN_NICE);
468 set_current_state(TASK_INTERRUPTIBLE);
469 while (!kthread_should_stop()) {
470 schedule();
471 spin_lock_bh(&bg->fcoe_rx_list.lock);
472 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
473 spin_unlock_bh(&bg->fcoe_rx_list.lock);
474 bnx2fc_recv_frame(skb);
475 spin_lock_bh(&bg->fcoe_rx_list.lock);
476 }
477 __set_current_state(TASK_INTERRUPTIBLE);
478 spin_unlock_bh(&bg->fcoe_rx_list.lock);
479 }
480 __set_current_state(TASK_RUNNING);
481 return 0;
482 }
483
484
485 static void bnx2fc_recv_frame(struct sk_buff *skb)
486 {
487 u32 fr_len;
488 struct fc_lport *lport;
489 struct fcoe_rcv_info *fr;
490 struct fc_stats *stats;
491 struct fc_frame_header *fh;
492 struct fcoe_crc_eof crc_eof;
493 struct fc_frame *fp;
494 struct fc_lport *vn_port;
495 struct fcoe_port *port;
496 u8 *mac = NULL;
497 u8 *dest_mac = NULL;
498 struct fcoe_hdr *hp;
499
500 fr = fcoe_dev_from_skb(skb);
501 lport = fr->fr_dev;
502 if (unlikely(lport == NULL)) {
503 printk(KERN_ERR PFX "Invalid lport struct\n");
504 kfree_skb(skb);
505 return;
506 }
507
508 if (skb_is_nonlinear(skb))
509 skb_linearize(skb);
510 mac = eth_hdr(skb)->h_source;
511 dest_mac = eth_hdr(skb)->h_dest;
512
513 /* Pull the header */
514 hp = (struct fcoe_hdr *) skb_network_header(skb);
515 fh = (struct fc_frame_header *) skb_transport_header(skb);
516 skb_pull(skb, sizeof(struct fcoe_hdr));
517 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
518
519 fp = (struct fc_frame *)skb;
520 fc_frame_init(fp);
521 fr_dev(fp) = lport;
522 fr_sof(fp) = hp->fcoe_sof;
523 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
524 kfree_skb(skb);
525 return;
526 }
527 fr_eof(fp) = crc_eof.fcoe_eof;
528 fr_crc(fp) = crc_eof.fcoe_crc32;
529 if (pskb_trim(skb, fr_len)) {
530 kfree_skb(skb);
531 return;
532 }
533
534 fh = fc_frame_header_get(fp);
535
536 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
537 if (vn_port) {
538 port = lport_priv(vn_port);
539 if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
540 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
541 kfree_skb(skb);
542 return;
543 }
544 }
545 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
546 fh->fh_type == FC_TYPE_FCP) {
547 /* Drop FCP data. We dont this in L2 path */
548 kfree_skb(skb);
549 return;
550 }
551 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
552 fh->fh_type == FC_TYPE_ELS) {
553 switch (fc_frame_payload_op(fp)) {
554 case ELS_LOGO:
555 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
556 /* drop non-FIP LOGO */
557 kfree_skb(skb);
558 return;
559 }
560 break;
561 }
562 }
563
564 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
565 /* Drop incoming ABTS */
566 kfree_skb(skb);
567 return;
568 }
569
570 stats = per_cpu_ptr(lport->stats, smp_processor_id());
571 stats->RxFrames++;
572 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
573
574 if (le32_to_cpu(fr_crc(fp)) !=
575 ~crc32(~0, skb->data, fr_len)) {
576 if (stats->InvalidCRCCount < 5)
577 printk(KERN_WARNING PFX "dropping frame with "
578 "CRC error\n");
579 stats->InvalidCRCCount++;
580 kfree_skb(skb);
581 return;
582 }
583 fc_exch_recv(lport, fp);
584 }
585
586 /**
587 * bnx2fc_percpu_io_thread - thread per cpu for ios
588 *
589 * @arg: ptr to bnx2fc_percpu_info structure
590 */
591 int bnx2fc_percpu_io_thread(void *arg)
592 {
593 struct bnx2fc_percpu_s *p = arg;
594 struct bnx2fc_work *work, *tmp;
595 LIST_HEAD(work_list);
596
597 set_user_nice(current, MIN_NICE);
598 set_current_state(TASK_INTERRUPTIBLE);
599 while (!kthread_should_stop()) {
600 schedule();
601 spin_lock_bh(&p->fp_work_lock);
602 while (!list_empty(&p->work_list)) {
603 list_splice_init(&p->work_list, &work_list);
604 spin_unlock_bh(&p->fp_work_lock);
605
606 list_for_each_entry_safe(work, tmp, &work_list, list) {
607 list_del_init(&work->list);
608 bnx2fc_process_cq_compl(work->tgt, work->wqe);
609 kfree(work);
610 }
611
612 spin_lock_bh(&p->fp_work_lock);
613 }
614 __set_current_state(TASK_INTERRUPTIBLE);
615 spin_unlock_bh(&p->fp_work_lock);
616 }
617 __set_current_state(TASK_RUNNING);
618
619 return 0;
620 }
621
622 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
623 {
624 struct fc_host_statistics *bnx2fc_stats;
625 struct fc_lport *lport = shost_priv(shost);
626 struct fcoe_port *port = lport_priv(lport);
627 struct bnx2fc_interface *interface = port->priv;
628 struct bnx2fc_hba *hba = interface->hba;
629 struct fcoe_statistics_params *fw_stats;
630 int rc = 0;
631
632 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
633 if (!fw_stats)
634 return NULL;
635
636 bnx2fc_stats = fc_get_host_stats(shost);
637
638 init_completion(&hba->stat_req_done);
639 if (bnx2fc_send_stat_req(hba))
640 return bnx2fc_stats;
641 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
642 if (!rc) {
643 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
644 return bnx2fc_stats;
645 }
646 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
647 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
648 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
649 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
650 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
651 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
652 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
653 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
654 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
655 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
656
657 bnx2fc_stats->dumped_frames = 0;
658 bnx2fc_stats->lip_count = 0;
659 bnx2fc_stats->nos_count = 0;
660 bnx2fc_stats->loss_of_sync_count = 0;
661 bnx2fc_stats->loss_of_signal_count = 0;
662 bnx2fc_stats->prim_seq_protocol_err_count = 0;
663
664 memcpy(&hba->prev_stats, hba->stats_buffer,
665 sizeof(struct fcoe_statistics_params));
666 return bnx2fc_stats;
667 }
668
669 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
670 {
671 struct fcoe_port *port = lport_priv(lport);
672 struct bnx2fc_interface *interface = port->priv;
673 struct bnx2fc_hba *hba = interface->hba;
674 struct Scsi_Host *shost = lport->host;
675 int rc = 0;
676
677 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
678 shost->max_lun = BNX2FC_MAX_LUN;
679 shost->max_id = BNX2FC_MAX_FCP_TGT;
680 shost->max_channel = 0;
681 if (lport->vport)
682 shost->transportt = bnx2fc_vport_xport_template;
683 else
684 shost->transportt = bnx2fc_transport_template;
685
686 /* Add the new host to SCSI-ml */
687 rc = scsi_add_host(lport->host, dev);
688 if (rc) {
689 printk(KERN_ERR PFX "Error on scsi_add_host\n");
690 return rc;
691 }
692 if (!lport->vport)
693 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
694 snprintf(fc_host_symbolic_name(lport->host), 256,
695 "%s (Broadcom %s) v%s over %s",
696 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
697 interface->netdev->name);
698
699 return 0;
700 }
701
702 static int bnx2fc_link_ok(struct fc_lport *lport)
703 {
704 struct fcoe_port *port = lport_priv(lport);
705 struct bnx2fc_interface *interface = port->priv;
706 struct bnx2fc_hba *hba = interface->hba;
707 struct net_device *dev = hba->phys_dev;
708 int rc = 0;
709
710 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
711 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
712 else {
713 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
714 rc = -1;
715 }
716 return rc;
717 }
718
719 /**
720 * bnx2fc_get_link_state - get network link state
721 *
722 * @hba: adapter instance pointer
723 *
724 * updates adapter structure flag based on netdev state
725 */
726 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
727 {
728 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
729 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
730 else
731 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
732 }
733
734 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
735 {
736 struct bnx2fc_hba *hba;
737 struct bnx2fc_interface *interface;
738 struct fcoe_ctlr *ctlr;
739 struct fcoe_port *port;
740 u64 wwnn, wwpn;
741
742 port = lport_priv(lport);
743 interface = port->priv;
744 ctlr = bnx2fc_to_ctlr(interface);
745 hba = interface->hba;
746
747 /* require support for get_pauseparam ethtool op. */
748 if (!hba->phys_dev->ethtool_ops ||
749 !hba->phys_dev->ethtool_ops->get_pauseparam)
750 return -EOPNOTSUPP;
751
752 if (fc_set_mfs(lport, BNX2FC_MFS))
753 return -EINVAL;
754
755 skb_queue_head_init(&port->fcoe_pending_queue);
756 port->fcoe_pending_queue_active = 0;
757 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
758
759 fcoe_link_speed_update(lport);
760
761 if (!lport->vport) {
762 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
763 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
764 1, 0);
765 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
766 fc_set_wwnn(lport, wwnn);
767
768 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
769 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
770 2, 0);
771
772 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
773 fc_set_wwpn(lport, wwpn);
774 }
775
776 return 0;
777 }
778
779 static void bnx2fc_destroy_timer(unsigned long data)
780 {
781 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
782
783 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
784 "Destroy compl not received!!\n");
785 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
786 wake_up_interruptible(&hba->destroy_wait);
787 }
788
789 /**
790 * bnx2fc_indicate_netevent - Generic netdev event handler
791 *
792 * @context: adapter structure pointer
793 * @event: event type
794 * @vlan_id: vlan id - associated vlan id with this event
795 *
796 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
797 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
798 */
799 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
800 u16 vlan_id)
801 {
802 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
803 struct fcoe_ctlr_device *cdev;
804 struct fc_lport *lport;
805 struct fc_lport *vport;
806 struct bnx2fc_interface *interface, *tmp;
807 struct fcoe_ctlr *ctlr;
808 int wait_for_upload = 0;
809 u32 link_possible = 1;
810
811 if (vlan_id != 0 && event != NETDEV_UNREGISTER)
812 return;
813
814 switch (event) {
815 case NETDEV_UP:
816 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
817 printk(KERN_ERR "indicate_netevent: "\
818 "hba is not UP!!\n");
819 break;
820
821 case NETDEV_DOWN:
822 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
823 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
824 link_possible = 0;
825 break;
826
827 case NETDEV_GOING_DOWN:
828 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
829 link_possible = 0;
830 break;
831
832 case NETDEV_CHANGE:
833 break;
834
835 case NETDEV_UNREGISTER:
836 if (!vlan_id)
837 return;
838 mutex_lock(&bnx2fc_dev_lock);
839 list_for_each_entry_safe(interface, tmp, &if_list, list) {
840 if (interface->hba == hba &&
841 interface->vlan_id == (vlan_id & VLAN_VID_MASK))
842 __bnx2fc_destroy(interface);
843 }
844 mutex_unlock(&bnx2fc_dev_lock);
845
846 /* Ensure ALL destroy work has been completed before return */
847 flush_workqueue(bnx2fc_wq);
848 return;
849
850 default:
851 printk(KERN_ERR PFX "Unknown netevent %ld", event);
852 return;
853 }
854
855 mutex_lock(&bnx2fc_dev_lock);
856 list_for_each_entry(interface, &if_list, list) {
857
858 if (interface->hba != hba)
859 continue;
860
861 ctlr = bnx2fc_to_ctlr(interface);
862 lport = ctlr->lp;
863 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
864 interface->netdev->name, event);
865
866 fcoe_link_speed_update(lport);
867
868 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
869
870 if (link_possible && !bnx2fc_link_ok(lport)) {
871 switch (cdev->enabled) {
872 case FCOE_CTLR_DISABLED:
873 pr_info("Link up while interface is disabled.\n");
874 break;
875 case FCOE_CTLR_ENABLED:
876 case FCOE_CTLR_UNUSED:
877 /* Reset max recv frame size to default */
878 fc_set_mfs(lport, BNX2FC_MFS);
879 /*
880 * ctlr link up will only be handled during
881 * enable to avoid sending discovery
882 * solicitation on a stale vlan
883 */
884 if (interface->enabled)
885 fcoe_ctlr_link_up(ctlr);
886 };
887 } else if (fcoe_ctlr_link_down(ctlr)) {
888 switch (cdev->enabled) {
889 case FCOE_CTLR_DISABLED:
890 pr_info("Link down while interface is disabled.\n");
891 break;
892 case FCOE_CTLR_ENABLED:
893 case FCOE_CTLR_UNUSED:
894 mutex_lock(&lport->lp_mutex);
895 list_for_each_entry(vport, &lport->vports, list)
896 fc_host_port_type(vport->host) =
897 FC_PORTTYPE_UNKNOWN;
898 mutex_unlock(&lport->lp_mutex);
899 fc_host_port_type(lport->host) =
900 FC_PORTTYPE_UNKNOWN;
901 per_cpu_ptr(lport->stats,
902 get_cpu())->LinkFailureCount++;
903 put_cpu();
904 fcoe_clean_pending_queue(lport);
905 wait_for_upload = 1;
906 };
907 }
908 }
909 mutex_unlock(&bnx2fc_dev_lock);
910
911 if (wait_for_upload) {
912 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
913 init_waitqueue_head(&hba->shutdown_wait);
914 BNX2FC_MISC_DBG("indicate_netevent "
915 "num_ofld_sess = %d\n",
916 hba->num_ofld_sess);
917 hba->wait_for_link_down = 1;
918 wait_event_interruptible(hba->shutdown_wait,
919 (hba->num_ofld_sess == 0));
920 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
921 hba->num_ofld_sess);
922 hba->wait_for_link_down = 0;
923
924 if (signal_pending(current))
925 flush_signals(current);
926 }
927 }
928
929 static int bnx2fc_libfc_config(struct fc_lport *lport)
930 {
931
932 /* Set the function pointers set by bnx2fc driver */
933 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
934 sizeof(struct libfc_function_template));
935 fc_elsct_init(lport);
936 fc_exch_init(lport);
937 fc_rport_init(lport);
938 fc_disc_init(lport);
939 fc_disc_config(lport, lport);
940 return 0;
941 }
942
943 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
944 {
945 int fcoe_min_xid, fcoe_max_xid;
946
947 fcoe_min_xid = hba->max_xid + 1;
948 if (nr_cpu_ids <= 2)
949 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
950 else
951 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
952 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
953 fcoe_max_xid, NULL)) {
954 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
955 return -ENOMEM;
956 }
957
958 return 0;
959 }
960
961 static int bnx2fc_lport_config(struct fc_lport *lport)
962 {
963 lport->link_up = 0;
964 lport->qfull = 0;
965 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
966 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
967 lport->e_d_tov = 2 * 1000;
968 lport->r_a_tov = 10 * 1000;
969
970 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
971 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
972 lport->does_npiv = 1;
973
974 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
975 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
976
977 /* alloc stats structure */
978 if (fc_lport_init_stats(lport))
979 return -ENOMEM;
980
981 /* Finish fc_lport configuration */
982 fc_lport_config(lport);
983
984 return 0;
985 }
986
987 /**
988 * bnx2fc_fip_recv - handle a received FIP frame.
989 *
990 * @skb: the received skb
991 * @dev: associated &net_device
992 * @ptype: the &packet_type structure which was used to register this handler.
993 * @orig_dev: original receive &net_device, in case @ dev is a bond.
994 *
995 * Returns: 0 for success
996 */
997 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
998 struct packet_type *ptype,
999 struct net_device *orig_dev)
1000 {
1001 struct bnx2fc_interface *interface;
1002 struct fcoe_ctlr *ctlr;
1003 interface = container_of(ptype, struct bnx2fc_interface,
1004 fip_packet_type);
1005 ctlr = bnx2fc_to_ctlr(interface);
1006 fcoe_ctlr_recv(ctlr, skb);
1007 return 0;
1008 }
1009
1010 /**
1011 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1012 *
1013 * @fip: FCoE controller.
1014 * @old: Unicast MAC address to delete if the MAC is non-zero.
1015 * @new: Unicast MAC address to add.
1016 *
1017 * Remove any previously-set unicast MAC filter.
1018 * Add secondary FCoE MAC address filter for our OUI.
1019 */
1020 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1021 {
1022 struct fcoe_port *port = lport_priv(lport);
1023
1024 memcpy(port->data_src_addr, addr, ETH_ALEN);
1025 }
1026
1027 /**
1028 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1029 *
1030 * @lport: libfc port
1031 */
1032 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1033 {
1034 struct fcoe_port *port;
1035
1036 port = (struct fcoe_port *)lport_priv(lport);
1037 return port->data_src_addr;
1038 }
1039
1040 /**
1041 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1042 *
1043 * @fip: FCoE controller.
1044 * @skb: FIP Packet.
1045 */
1046 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1047 {
1048 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1049 dev_queue_xmit(skb);
1050 }
1051
1052 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1053 {
1054 struct Scsi_Host *shost = vport_to_shost(vport);
1055 struct fc_lport *n_port = shost_priv(shost);
1056 struct fcoe_port *port = lport_priv(n_port);
1057 struct bnx2fc_interface *interface = port->priv;
1058 struct net_device *netdev = interface->netdev;
1059 struct fc_lport *vn_port;
1060 int rc;
1061 char buf[32];
1062
1063 rc = fcoe_validate_vport_create(vport);
1064 if (rc) {
1065 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1066 printk(KERN_ERR PFX "Failed to create vport, "
1067 "WWPN (0x%s) already exists\n",
1068 buf);
1069 return rc;
1070 }
1071
1072 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1073 printk(KERN_ERR PFX "vn ports cannot be created on"
1074 "this interface\n");
1075 return -EIO;
1076 }
1077 rtnl_lock();
1078 mutex_lock(&bnx2fc_dev_lock);
1079 vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1080 mutex_unlock(&bnx2fc_dev_lock);
1081 rtnl_unlock();
1082
1083 if (IS_ERR(vn_port)) {
1084 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1085 netdev->name);
1086 return -EIO;
1087 }
1088
1089 if (disabled) {
1090 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1091 } else {
1092 vn_port->boot_time = jiffies;
1093 fc_lport_init(vn_port);
1094 fc_fabric_login(vn_port);
1095 fc_vport_setlink(vn_port);
1096 }
1097 return 0;
1098 }
1099
1100 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1101 {
1102 struct bnx2fc_lport *blport, *tmp;
1103
1104 spin_lock_bh(&hba->hba_lock);
1105 list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1106 if (blport->lport == lport) {
1107 list_del(&blport->list);
1108 kfree(blport);
1109 }
1110 }
1111 spin_unlock_bh(&hba->hba_lock);
1112 }
1113
1114 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1115 {
1116 struct Scsi_Host *shost = vport_to_shost(vport);
1117 struct fc_lport *n_port = shost_priv(shost);
1118 struct fc_lport *vn_port = vport->dd_data;
1119 struct fcoe_port *port = lport_priv(vn_port);
1120 struct bnx2fc_interface *interface = port->priv;
1121 struct fc_lport *v_port;
1122 bool found = false;
1123
1124 mutex_lock(&n_port->lp_mutex);
1125 list_for_each_entry(v_port, &n_port->vports, list)
1126 if (v_port->vport == vport) {
1127 found = true;
1128 break;
1129 }
1130
1131 if (!found) {
1132 mutex_unlock(&n_port->lp_mutex);
1133 return -ENOENT;
1134 }
1135 list_del(&vn_port->list);
1136 mutex_unlock(&n_port->lp_mutex);
1137 bnx2fc_free_vport(interface->hba, port->lport);
1138 bnx2fc_port_shutdown(port->lport);
1139 bnx2fc_interface_put(interface);
1140 queue_work(bnx2fc_wq, &port->destroy_work);
1141 return 0;
1142 }
1143
1144 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1145 {
1146 struct fc_lport *lport = vport->dd_data;
1147
1148 if (disable) {
1149 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1150 fc_fabric_logoff(lport);
1151 } else {
1152 lport->boot_time = jiffies;
1153 fc_fabric_login(lport);
1154 fc_vport_setlink(lport);
1155 }
1156 return 0;
1157 }
1158
1159
1160 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1161 {
1162 struct net_device *netdev = interface->netdev;
1163 struct net_device *physdev = interface->hba->phys_dev;
1164 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1165 struct netdev_hw_addr *ha;
1166 int sel_san_mac = 0;
1167
1168 /* setup Source MAC Address */
1169 rcu_read_lock();
1170 for_each_dev_addr(physdev, ha) {
1171 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1172 ha->type);
1173 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1174 ha->addr[1], ha->addr[2], ha->addr[3],
1175 ha->addr[4], ha->addr[5]);
1176
1177 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1178 (is_valid_ether_addr(ha->addr))) {
1179 memcpy(ctlr->ctl_src_addr, ha->addr,
1180 ETH_ALEN);
1181 sel_san_mac = 1;
1182 BNX2FC_MISC_DBG("Found SAN MAC\n");
1183 }
1184 }
1185 rcu_read_unlock();
1186
1187 if (!sel_san_mac)
1188 return -ENODEV;
1189
1190 interface->fip_packet_type.func = bnx2fc_fip_recv;
1191 interface->fip_packet_type.type = htons(ETH_P_FIP);
1192 interface->fip_packet_type.dev = netdev;
1193 dev_add_pack(&interface->fip_packet_type);
1194
1195 interface->fcoe_packet_type.func = bnx2fc_rcv;
1196 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1197 interface->fcoe_packet_type.dev = netdev;
1198 dev_add_pack(&interface->fcoe_packet_type);
1199
1200 return 0;
1201 }
1202
1203 static int bnx2fc_attach_transport(void)
1204 {
1205 bnx2fc_transport_template =
1206 fc_attach_transport(&bnx2fc_transport_function);
1207
1208 if (bnx2fc_transport_template == NULL) {
1209 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1210 return -ENODEV;
1211 }
1212
1213 bnx2fc_vport_xport_template =
1214 fc_attach_transport(&bnx2fc_vport_xport_function);
1215 if (bnx2fc_vport_xport_template == NULL) {
1216 printk(KERN_ERR PFX
1217 "Failed to attach FC transport for vport\n");
1218 fc_release_transport(bnx2fc_transport_template);
1219 bnx2fc_transport_template = NULL;
1220 return -ENODEV;
1221 }
1222 return 0;
1223 }
1224 static void bnx2fc_release_transport(void)
1225 {
1226 fc_release_transport(bnx2fc_transport_template);
1227 fc_release_transport(bnx2fc_vport_xport_template);
1228 bnx2fc_transport_template = NULL;
1229 bnx2fc_vport_xport_template = NULL;
1230 }
1231
1232 static void bnx2fc_interface_release(struct kref *kref)
1233 {
1234 struct fcoe_ctlr_device *ctlr_dev;
1235 struct bnx2fc_interface *interface;
1236 struct fcoe_ctlr *ctlr;
1237 struct net_device *netdev;
1238
1239 interface = container_of(kref, struct bnx2fc_interface, kref);
1240 BNX2FC_MISC_DBG("Interface is being released\n");
1241
1242 ctlr = bnx2fc_to_ctlr(interface);
1243 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1244 netdev = interface->netdev;
1245
1246 /* tear-down FIP controller */
1247 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1248 fcoe_ctlr_destroy(ctlr);
1249
1250 fcoe_ctlr_device_delete(ctlr_dev);
1251
1252 dev_put(netdev);
1253 module_put(THIS_MODULE);
1254 }
1255
1256 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1257 {
1258 kref_get(&interface->kref);
1259 }
1260
1261 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1262 {
1263 kref_put(&interface->kref, bnx2fc_interface_release);
1264 }
1265 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1266 {
1267 /* Free the command manager */
1268 if (hba->cmd_mgr) {
1269 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1270 hba->cmd_mgr = NULL;
1271 }
1272 kfree(hba->tgt_ofld_list);
1273 bnx2fc_unbind_pcidev(hba);
1274 kfree(hba);
1275 }
1276
1277 /**
1278 * bnx2fc_hba_create - create a new bnx2fc hba
1279 *
1280 * @cnic: pointer to cnic device
1281 *
1282 * Creates a new FCoE hba on the given device.
1283 *
1284 */
1285 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1286 {
1287 struct bnx2fc_hba *hba;
1288 struct fcoe_capabilities *fcoe_cap;
1289 int rc;
1290
1291 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1292 if (!hba) {
1293 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1294 return NULL;
1295 }
1296 spin_lock_init(&hba->hba_lock);
1297 mutex_init(&hba->hba_mutex);
1298
1299 hba->cnic = cnic;
1300
1301 hba->max_tasks = cnic->max_fcoe_exchanges;
1302 hba->elstm_xids = (hba->max_tasks / 2);
1303 hba->max_outstanding_cmds = hba->elstm_xids;
1304 hba->max_xid = (hba->max_tasks - 1);
1305
1306 rc = bnx2fc_bind_pcidev(hba);
1307 if (rc) {
1308 printk(KERN_ERR PFX "create_adapter: bind error\n");
1309 goto bind_err;
1310 }
1311 hba->phys_dev = cnic->netdev;
1312 hba->next_conn_id = 0;
1313
1314 hba->tgt_ofld_list =
1315 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1316 GFP_KERNEL);
1317 if (!hba->tgt_ofld_list) {
1318 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1319 goto tgtofld_err;
1320 }
1321
1322 hba->num_ofld_sess = 0;
1323
1324 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1325 if (!hba->cmd_mgr) {
1326 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1327 goto cmgr_err;
1328 }
1329 fcoe_cap = &hba->fcoe_cap;
1330
1331 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1332 FCOE_IOS_PER_CONNECTION_SHIFT;
1333 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1334 FCOE_LOGINS_PER_PORT_SHIFT;
1335 fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1336 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1337 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1338 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1339 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1340 FCOE_TARGETS_SUPPORTED_SHIFT;
1341 fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1342 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1343 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1344
1345 init_waitqueue_head(&hba->shutdown_wait);
1346 init_waitqueue_head(&hba->destroy_wait);
1347 INIT_LIST_HEAD(&hba->vports);
1348
1349 return hba;
1350
1351 cmgr_err:
1352 kfree(hba->tgt_ofld_list);
1353 tgtofld_err:
1354 bnx2fc_unbind_pcidev(hba);
1355 bind_err:
1356 kfree(hba);
1357 return NULL;
1358 }
1359
1360 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1361 struct net_device *netdev,
1362 enum fip_state fip_mode)
1363 {
1364 struct fcoe_ctlr_device *ctlr_dev;
1365 struct bnx2fc_interface *interface;
1366 struct fcoe_ctlr *ctlr;
1367 int size;
1368 int rc = 0;
1369
1370 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1371 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1372 size);
1373 if (!ctlr_dev) {
1374 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1375 return NULL;
1376 }
1377 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1378 ctlr->cdev = ctlr_dev;
1379 interface = fcoe_ctlr_priv(ctlr);
1380 dev_hold(netdev);
1381 kref_init(&interface->kref);
1382 interface->hba = hba;
1383 interface->netdev = netdev;
1384
1385 /* Initialize FIP */
1386 fcoe_ctlr_init(ctlr, fip_mode);
1387 ctlr->send = bnx2fc_fip_send;
1388 ctlr->update_mac = bnx2fc_update_src_mac;
1389 ctlr->get_src_addr = bnx2fc_get_src_mac;
1390 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1391
1392 rc = bnx2fc_interface_setup(interface);
1393 if (!rc)
1394 return interface;
1395
1396 fcoe_ctlr_destroy(ctlr);
1397 dev_put(netdev);
1398 fcoe_ctlr_device_delete(ctlr_dev);
1399 return NULL;
1400 }
1401
1402 /**
1403 * bnx2fc_if_create - Create FCoE instance on a given interface
1404 *
1405 * @interface: FCoE interface to create a local port on
1406 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1407 * @npiv: Indicates if the port is vport or not
1408 *
1409 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1410 *
1411 * Returns: Allocated fc_lport or an error pointer
1412 */
1413 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1414 struct device *parent, int npiv)
1415 {
1416 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1417 struct fc_lport *lport, *n_port;
1418 struct fcoe_port *port;
1419 struct Scsi_Host *shost;
1420 struct fc_vport *vport = dev_to_vport(parent);
1421 struct bnx2fc_lport *blport;
1422 struct bnx2fc_hba *hba = interface->hba;
1423 int rc = 0;
1424
1425 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1426 if (!blport) {
1427 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1428 return NULL;
1429 }
1430
1431 /* Allocate Scsi_Host structure */
1432 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1433 if (!npiv)
1434 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1435 else
1436 lport = libfc_vport_create(vport, sizeof(*port));
1437
1438 if (!lport) {
1439 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1440 goto free_blport;
1441 }
1442 shost = lport->host;
1443 port = lport_priv(lport);
1444 port->lport = lport;
1445 port->priv = interface;
1446 port->get_netdev = bnx2fc_netdev;
1447 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1448
1449 /* Configure fcoe_port */
1450 rc = bnx2fc_lport_config(lport);
1451 if (rc)
1452 goto lp_config_err;
1453
1454 if (npiv) {
1455 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1456 vport->node_name, vport->port_name);
1457 fc_set_wwnn(lport, vport->node_name);
1458 fc_set_wwpn(lport, vport->port_name);
1459 }
1460 /* Configure netdev and networking properties of the lport */
1461 rc = bnx2fc_net_config(lport, interface->netdev);
1462 if (rc) {
1463 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1464 goto lp_config_err;
1465 }
1466
1467 rc = bnx2fc_shost_config(lport, parent);
1468 if (rc) {
1469 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1470 interface->netdev->name);
1471 goto lp_config_err;
1472 }
1473
1474 /* Initialize the libfc library */
1475 rc = bnx2fc_libfc_config(lport);
1476 if (rc) {
1477 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1478 goto shost_err;
1479 }
1480 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1481
1482 /* Allocate exchange manager */
1483 if (!npiv)
1484 rc = bnx2fc_em_config(lport, hba);
1485 else {
1486 shost = vport_to_shost(vport);
1487 n_port = shost_priv(shost);
1488 rc = fc_exch_mgr_list_clone(n_port, lport);
1489 }
1490
1491 if (rc) {
1492 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1493 goto shost_err;
1494 }
1495
1496 bnx2fc_interface_get(interface);
1497
1498 spin_lock_bh(&hba->hba_lock);
1499 blport->lport = lport;
1500 list_add_tail(&blport->list, &hba->vports);
1501 spin_unlock_bh(&hba->hba_lock);
1502
1503 return lport;
1504
1505 shost_err:
1506 scsi_remove_host(shost);
1507 lp_config_err:
1508 scsi_host_put(lport->host);
1509 free_blport:
1510 kfree(blport);
1511 return NULL;
1512 }
1513
1514 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1515 {
1516 /* Dont listen for Ethernet packets anymore */
1517 __dev_remove_pack(&interface->fcoe_packet_type);
1518 __dev_remove_pack(&interface->fip_packet_type);
1519 synchronize_net();
1520 }
1521
1522 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1523 {
1524 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1525 struct fc_lport *lport = ctlr->lp;
1526 struct fcoe_port *port = lport_priv(lport);
1527 struct bnx2fc_hba *hba = interface->hba;
1528
1529 /* Stop the transmit retry timer */
1530 del_timer_sync(&port->timer);
1531
1532 /* Free existing transmit skbs */
1533 fcoe_clean_pending_queue(lport);
1534
1535 bnx2fc_net_cleanup(interface);
1536
1537 bnx2fc_free_vport(hba, lport);
1538 }
1539
1540 static void bnx2fc_if_destroy(struct fc_lport *lport)
1541 {
1542
1543 /* Free queued packets for the receive thread */
1544 bnx2fc_clean_rx_queue(lport);
1545
1546 /* Detach from scsi-ml */
1547 fc_remove_host(lport->host);
1548 scsi_remove_host(lport->host);
1549
1550 /*
1551 * Note that only the physical lport will have the exchange manager.
1552 * for vports, this function is NOP
1553 */
1554 fc_exch_mgr_free(lport);
1555
1556 /* Free memory used by statistical counters */
1557 fc_lport_free_stats(lport);
1558
1559 /* Release Scsi_Host */
1560 scsi_host_put(lport->host);
1561 }
1562
1563 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1564 {
1565 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1566 struct fc_lport *lport = ctlr->lp;
1567 struct fcoe_port *port = lport_priv(lport);
1568
1569 bnx2fc_interface_cleanup(interface);
1570 bnx2fc_stop(interface);
1571 list_del(&interface->list);
1572 bnx2fc_interface_put(interface);
1573 queue_work(bnx2fc_wq, &port->destroy_work);
1574 }
1575
1576 /**
1577 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1578 *
1579 * @buffer: The name of the Ethernet interface to be destroyed
1580 * @kp: The associated kernel parameter
1581 *
1582 * Called from sysfs.
1583 *
1584 * Returns: 0 for success
1585 */
1586 static int bnx2fc_destroy(struct net_device *netdev)
1587 {
1588 struct bnx2fc_interface *interface = NULL;
1589 struct workqueue_struct *timer_work_queue;
1590 struct fcoe_ctlr *ctlr;
1591 int rc = 0;
1592
1593 rtnl_lock();
1594 mutex_lock(&bnx2fc_dev_lock);
1595
1596 interface = bnx2fc_interface_lookup(netdev);
1597 ctlr = bnx2fc_to_ctlr(interface);
1598 if (!interface || !ctlr->lp) {
1599 rc = -ENODEV;
1600 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1601 goto netdev_err;
1602 }
1603
1604 timer_work_queue = interface->timer_work_queue;
1605 __bnx2fc_destroy(interface);
1606 destroy_workqueue(timer_work_queue);
1607
1608 netdev_err:
1609 mutex_unlock(&bnx2fc_dev_lock);
1610 rtnl_unlock();
1611 return rc;
1612 }
1613
1614 static void bnx2fc_destroy_work(struct work_struct *work)
1615 {
1616 struct fcoe_port *port;
1617 struct fc_lport *lport;
1618
1619 port = container_of(work, struct fcoe_port, destroy_work);
1620 lport = port->lport;
1621
1622 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1623
1624 bnx2fc_if_destroy(lport);
1625 }
1626
1627 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1628 {
1629 bnx2fc_free_fw_resc(hba);
1630 bnx2fc_free_task_ctx(hba);
1631 }
1632
1633 /**
1634 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1635 * pci structure
1636 *
1637 * @hba: Adapter instance
1638 */
1639 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1640 {
1641 if (bnx2fc_setup_task_ctx(hba))
1642 goto mem_err;
1643
1644 if (bnx2fc_setup_fw_resc(hba))
1645 goto mem_err;
1646
1647 return 0;
1648 mem_err:
1649 bnx2fc_unbind_adapter_devices(hba);
1650 return -ENOMEM;
1651 }
1652
1653 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1654 {
1655 struct cnic_dev *cnic;
1656 struct pci_dev *pdev;
1657
1658 if (!hba->cnic) {
1659 printk(KERN_ERR PFX "cnic is NULL\n");
1660 return -ENODEV;
1661 }
1662 cnic = hba->cnic;
1663 pdev = hba->pcidev = cnic->pcidev;
1664 if (!hba->pcidev)
1665 return -ENODEV;
1666
1667 switch (pdev->device) {
1668 case PCI_DEVICE_ID_NX2_57710:
1669 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1670 break;
1671 case PCI_DEVICE_ID_NX2_57711:
1672 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1673 break;
1674 case PCI_DEVICE_ID_NX2_57712:
1675 case PCI_DEVICE_ID_NX2_57712_MF:
1676 case PCI_DEVICE_ID_NX2_57712_VF:
1677 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1678 break;
1679 case PCI_DEVICE_ID_NX2_57800:
1680 case PCI_DEVICE_ID_NX2_57800_MF:
1681 case PCI_DEVICE_ID_NX2_57800_VF:
1682 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1683 break;
1684 case PCI_DEVICE_ID_NX2_57810:
1685 case PCI_DEVICE_ID_NX2_57810_MF:
1686 case PCI_DEVICE_ID_NX2_57810_VF:
1687 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1688 break;
1689 case PCI_DEVICE_ID_NX2_57840:
1690 case PCI_DEVICE_ID_NX2_57840_MF:
1691 case PCI_DEVICE_ID_NX2_57840_VF:
1692 case PCI_DEVICE_ID_NX2_57840_2_20:
1693 case PCI_DEVICE_ID_NX2_57840_4_10:
1694 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1695 break;
1696 default:
1697 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1698 break;
1699 }
1700 pci_dev_get(hba->pcidev);
1701 return 0;
1702 }
1703
1704 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1705 {
1706 if (hba->pcidev) {
1707 hba->chip_num[0] = '\0';
1708 pci_dev_put(hba->pcidev);
1709 }
1710 hba->pcidev = NULL;
1711 }
1712
1713 /**
1714 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1715 *
1716 * @handle: transport handle pointing to adapter struture
1717 */
1718 static int bnx2fc_ulp_get_stats(void *handle)
1719 {
1720 struct bnx2fc_hba *hba = handle;
1721 struct cnic_dev *cnic;
1722 struct fcoe_stats_info *stats_addr;
1723
1724 if (!hba)
1725 return -EINVAL;
1726
1727 cnic = hba->cnic;
1728 stats_addr = &cnic->stats_addr->fcoe_stat;
1729 if (!stats_addr)
1730 return -EINVAL;
1731
1732 strncpy(stats_addr->version, BNX2FC_VERSION,
1733 sizeof(stats_addr->version));
1734 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1735 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1736
1737 return 0;
1738 }
1739
1740
1741 /**
1742 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1743 *
1744 * @handle: transport handle pointing to adapter structure
1745 *
1746 * This function maps adapter structure to pcidev structure and initiates
1747 * firmware handshake to enable/initialize on-chip FCoE components.
1748 * This bnx2fc - cnic interface api callback is used after following
1749 * conditions are met -
1750 * a) underlying network interface is up (marked by event NETDEV_UP
1751 * from netdev
1752 * b) bnx2fc adatper structure is registered.
1753 */
1754 static void bnx2fc_ulp_start(void *handle)
1755 {
1756 struct bnx2fc_hba *hba = handle;
1757 struct bnx2fc_interface *interface;
1758 struct fcoe_ctlr *ctlr;
1759 struct fc_lport *lport;
1760
1761 mutex_lock(&bnx2fc_dev_lock);
1762
1763 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1764 bnx2fc_fw_init(hba);
1765
1766 BNX2FC_MISC_DBG("bnx2fc started.\n");
1767
1768 list_for_each_entry(interface, &if_list, list) {
1769 if (interface->hba == hba) {
1770 ctlr = bnx2fc_to_ctlr(interface);
1771 lport = ctlr->lp;
1772 /* Kick off Fabric discovery*/
1773 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1774 lport->tt.frame_send = bnx2fc_xmit;
1775 bnx2fc_start_disc(interface);
1776 }
1777 }
1778
1779 mutex_unlock(&bnx2fc_dev_lock);
1780 }
1781
1782 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1783 {
1784 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1785 fc_fabric_logoff(lport);
1786 fc_lport_destroy(lport);
1787 }
1788
1789 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1790 {
1791 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1792 struct fc_lport *lport;
1793 struct fc_lport *vport;
1794
1795 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1796 return;
1797
1798 lport = ctlr->lp;
1799 bnx2fc_port_shutdown(lport);
1800
1801 mutex_lock(&lport->lp_mutex);
1802 list_for_each_entry(vport, &lport->vports, list)
1803 fc_host_port_type(vport->host) =
1804 FC_PORTTYPE_UNKNOWN;
1805 mutex_unlock(&lport->lp_mutex);
1806 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1807 fcoe_ctlr_link_down(ctlr);
1808 fcoe_clean_pending_queue(lport);
1809 }
1810
1811 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1812 {
1813 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1814 int rc = -1;
1815 int i = HZ;
1816
1817 rc = bnx2fc_bind_adapter_devices(hba);
1818 if (rc) {
1819 printk(KERN_ALERT PFX
1820 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1821 goto err_out;
1822 }
1823
1824 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1825 if (rc) {
1826 printk(KERN_ALERT PFX
1827 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1828 goto err_unbind;
1829 }
1830
1831 /*
1832 * Wait until the adapter init message is complete, and adapter
1833 * state is UP.
1834 */
1835 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1836 msleep(BNX2FC_INIT_POLL_TIME);
1837
1838 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1839 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1840 "Ignoring...\n",
1841 hba->cnic->netdev->name);
1842 rc = -1;
1843 goto err_unbind;
1844 }
1845
1846
1847 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1848 return 0;
1849
1850 err_unbind:
1851 bnx2fc_unbind_adapter_devices(hba);
1852 err_out:
1853 return rc;
1854 }
1855
1856 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1857 {
1858 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1859 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1860 init_timer(&hba->destroy_timer);
1861 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1862 jiffies;
1863 hba->destroy_timer.function = bnx2fc_destroy_timer;
1864 hba->destroy_timer.data = (unsigned long)hba;
1865 add_timer(&hba->destroy_timer);
1866 wait_event_interruptible(hba->destroy_wait,
1867 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1868 &hba->flags));
1869 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1870 /* This should never happen */
1871 if (signal_pending(current))
1872 flush_signals(current);
1873
1874 del_timer_sync(&hba->destroy_timer);
1875 }
1876 bnx2fc_unbind_adapter_devices(hba);
1877 }
1878 }
1879
1880 /**
1881 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1882 *
1883 * @handle: transport handle pointing to adapter structure
1884 *
1885 * Driver checks if adapter is already in shutdown mode, if not start
1886 * the shutdown process.
1887 */
1888 static void bnx2fc_ulp_stop(void *handle)
1889 {
1890 struct bnx2fc_hba *hba = handle;
1891 struct bnx2fc_interface *interface;
1892
1893 printk(KERN_ERR "ULP_STOP\n");
1894
1895 mutex_lock(&bnx2fc_dev_lock);
1896 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1897 goto exit;
1898 list_for_each_entry(interface, &if_list, list) {
1899 if (interface->hba == hba)
1900 bnx2fc_stop(interface);
1901 }
1902 BUG_ON(hba->num_ofld_sess != 0);
1903
1904 mutex_lock(&hba->hba_mutex);
1905 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1906 clear_bit(ADAPTER_STATE_GOING_DOWN,
1907 &hba->adapter_state);
1908
1909 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1910 mutex_unlock(&hba->hba_mutex);
1911
1912 bnx2fc_fw_destroy(hba);
1913 exit:
1914 mutex_unlock(&bnx2fc_dev_lock);
1915 }
1916
1917 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1918 {
1919 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1920 struct fc_lport *lport;
1921 int wait_cnt = 0;
1922
1923 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1924 /* Kick off FIP/FLOGI */
1925 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1926 printk(KERN_ERR PFX "Init not done yet\n");
1927 return;
1928 }
1929
1930 lport = ctlr->lp;
1931 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1932
1933 if (!bnx2fc_link_ok(lport) && interface->enabled) {
1934 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1935 fcoe_ctlr_link_up(ctlr);
1936 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1937 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1938 }
1939
1940 /* wait for the FCF to be selected before issuing FLOGI */
1941 while (!ctlr->sel_fcf) {
1942 msleep(250);
1943 /* give up after 3 secs */
1944 if (++wait_cnt > 12)
1945 break;
1946 }
1947
1948 /* Reset max receive frame size to default */
1949 if (fc_set_mfs(lport, BNX2FC_MFS))
1950 return;
1951
1952 fc_lport_init(lport);
1953 fc_fabric_login(lport);
1954 }
1955
1956
1957 /**
1958 * bnx2fc_ulp_init - Initialize an adapter instance
1959 *
1960 * @dev : cnic device handle
1961 * Called from cnic_register_driver() context to initialize all
1962 * enumerated cnic devices. This routine allocates adapter structure
1963 * and other device specific resources.
1964 */
1965 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1966 {
1967 struct bnx2fc_hba *hba;
1968 int rc = 0;
1969
1970 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1971 /* bnx2fc works only when bnx2x is loaded */
1972 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1973 (dev->max_fcoe_conn == 0)) {
1974 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1975 " flags: %lx fcoe_conn: %d\n",
1976 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1977 return;
1978 }
1979
1980 hba = bnx2fc_hba_create(dev);
1981 if (!hba) {
1982 printk(KERN_ERR PFX "hba initialization failed\n");
1983 return;
1984 }
1985
1986 /* Add HBA to the adapter list */
1987 mutex_lock(&bnx2fc_dev_lock);
1988 list_add_tail(&hba->list, &adapter_list);
1989 adapter_count++;
1990 mutex_unlock(&bnx2fc_dev_lock);
1991
1992 dev->fcoe_cap = &hba->fcoe_cap;
1993 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1994 rc = dev->register_device(dev, CNIC_ULP_FCOE,
1995 (void *) hba);
1996 if (rc)
1997 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
1998 else
1999 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2000 }
2001
2002 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2003 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2004 {
2005 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2006
2007 if (interface->enabled == true) {
2008 if (!ctlr->lp) {
2009 pr_err(PFX "__bnx2fc_disable: lport not found\n");
2010 return -ENODEV;
2011 } else {
2012 interface->enabled = false;
2013 fcoe_ctlr_link_down(ctlr);
2014 fcoe_clean_pending_queue(ctlr->lp);
2015 }
2016 }
2017 return 0;
2018 }
2019
2020 /**
2021 * Deperecated: Use bnx2fc_enabled()
2022 */
2023 static int bnx2fc_disable(struct net_device *netdev)
2024 {
2025 struct bnx2fc_interface *interface;
2026 struct fcoe_ctlr *ctlr;
2027 int rc = 0;
2028
2029 rtnl_lock();
2030 mutex_lock(&bnx2fc_dev_lock);
2031
2032 interface = bnx2fc_interface_lookup(netdev);
2033 ctlr = bnx2fc_to_ctlr(interface);
2034
2035 if (!interface) {
2036 rc = -ENODEV;
2037 pr_err(PFX "bnx2fc_disable: interface not found\n");
2038 } else {
2039 rc = __bnx2fc_disable(ctlr);
2040 }
2041 mutex_unlock(&bnx2fc_dev_lock);
2042 rtnl_unlock();
2043 return rc;
2044 }
2045
2046 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2047 {
2048 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2049
2050 if (interface->enabled == false) {
2051 if (!ctlr->lp) {
2052 pr_err(PFX "__bnx2fc_enable: lport not found\n");
2053 return -ENODEV;
2054 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2055 fcoe_ctlr_link_up(ctlr);
2056 interface->enabled = true;
2057 }
2058 }
2059 return 0;
2060 }
2061
2062 /**
2063 * Deprecated: Use bnx2fc_enabled()
2064 */
2065 static int bnx2fc_enable(struct net_device *netdev)
2066 {
2067 struct bnx2fc_interface *interface;
2068 struct fcoe_ctlr *ctlr;
2069 int rc = 0;
2070
2071 rtnl_lock();
2072 mutex_lock(&bnx2fc_dev_lock);
2073
2074 interface = bnx2fc_interface_lookup(netdev);
2075 ctlr = bnx2fc_to_ctlr(interface);
2076 if (!interface) {
2077 rc = -ENODEV;
2078 pr_err(PFX "bnx2fc_enable: interface not found\n");
2079 } else {
2080 rc = __bnx2fc_enable(ctlr);
2081 }
2082
2083 mutex_unlock(&bnx2fc_dev_lock);
2084 rtnl_unlock();
2085 return rc;
2086 }
2087
2088 /**
2089 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2090 * @cdev: The FCoE Controller that is being enabled or disabled
2091 *
2092 * fcoe_sysfs will ensure that the state of 'enabled' has
2093 * changed, so no checking is necessary here. This routine simply
2094 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2095 * When those routines are removed the functionality can be merged
2096 * here.
2097 */
2098 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2099 {
2100 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2101
2102 switch (cdev->enabled) {
2103 case FCOE_CTLR_ENABLED:
2104 return __bnx2fc_enable(ctlr);
2105 case FCOE_CTLR_DISABLED:
2106 return __bnx2fc_disable(ctlr);
2107 case FCOE_CTLR_UNUSED:
2108 default:
2109 return -ENOTSUPP;
2110 };
2111 }
2112
2113 enum bnx2fc_create_link_state {
2114 BNX2FC_CREATE_LINK_DOWN,
2115 BNX2FC_CREATE_LINK_UP,
2116 };
2117
2118 /**
2119 * _bnx2fc_create() - Create bnx2fc FCoE interface
2120 * @netdev : The net_device object the Ethernet interface to create on
2121 * @fip_mode: The FIP mode for this creation
2122 * @link_state: The ctlr link state on creation
2123 *
2124 * Called from either the libfcoe 'create' module parameter
2125 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2126 *
2127 * libfcoe's 'create' module parameter is deprecated so some
2128 * consolidation of code can be done when that interface is
2129 * removed.
2130 *
2131 * Returns: 0 for success
2132 */
2133 static int _bnx2fc_create(struct net_device *netdev,
2134 enum fip_state fip_mode,
2135 enum bnx2fc_create_link_state link_state)
2136 {
2137 struct fcoe_ctlr_device *cdev;
2138 struct fcoe_ctlr *ctlr;
2139 struct bnx2fc_interface *interface;
2140 struct bnx2fc_hba *hba;
2141 struct net_device *phys_dev = netdev;
2142 struct fc_lport *lport;
2143 struct ethtool_drvinfo drvinfo;
2144 int rc = 0;
2145 int vlan_id = 0;
2146
2147 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2148 if (fip_mode != FIP_MODE_FABRIC) {
2149 printk(KERN_ERR "fip mode not FABRIC\n");
2150 return -EIO;
2151 }
2152
2153 rtnl_lock();
2154
2155 mutex_lock(&bnx2fc_dev_lock);
2156
2157 if (!try_module_get(THIS_MODULE)) {
2158 rc = -EINVAL;
2159 goto mod_err;
2160 }
2161
2162 /* obtain physical netdev */
2163 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2164 phys_dev = vlan_dev_real_dev(netdev);
2165
2166 /* verify if the physical device is a netxtreme2 device */
2167 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2168 memset(&drvinfo, 0, sizeof(drvinfo));
2169 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2170 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2171 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2172 rc = -EINVAL;
2173 goto netdev_err;
2174 }
2175 } else {
2176 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2177 rc = -EINVAL;
2178 goto netdev_err;
2179 }
2180
2181 /* obtain interface and initialize rest of the structure */
2182 hba = bnx2fc_hba_lookup(phys_dev);
2183 if (!hba) {
2184 rc = -ENODEV;
2185 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2186 goto netdev_err;
2187 }
2188
2189 if (bnx2fc_interface_lookup(netdev)) {
2190 rc = -EEXIST;
2191 goto netdev_err;
2192 }
2193
2194 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2195 if (!interface) {
2196 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2197 goto ifput_err;
2198 }
2199
2200 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2201 vlan_id = vlan_dev_vlan_id(netdev);
2202 interface->vlan_enabled = 1;
2203 }
2204
2205 ctlr = bnx2fc_to_ctlr(interface);
2206 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2207 interface->vlan_id = vlan_id;
2208
2209 interface->timer_work_queue =
2210 create_singlethread_workqueue("bnx2fc_timer_wq");
2211 if (!interface->timer_work_queue) {
2212 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2213 rc = -EINVAL;
2214 goto ifput_err;
2215 }
2216
2217 lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2218 if (!lport) {
2219 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2220 netdev->name);
2221 rc = -EINVAL;
2222 goto if_create_err;
2223 }
2224
2225 /* Add interface to if_list */
2226 list_add_tail(&interface->list, &if_list);
2227
2228 lport->boot_time = jiffies;
2229
2230 /* Make this master N_port */
2231 ctlr->lp = lport;
2232
2233 if (link_state == BNX2FC_CREATE_LINK_UP)
2234 cdev->enabled = FCOE_CTLR_ENABLED;
2235 else
2236 cdev->enabled = FCOE_CTLR_DISABLED;
2237
2238 if (link_state == BNX2FC_CREATE_LINK_UP &&
2239 !bnx2fc_link_ok(lport)) {
2240 fcoe_ctlr_link_up(ctlr);
2241 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2242 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2243 }
2244
2245 BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2246 bnx2fc_start_disc(interface);
2247
2248 if (link_state == BNX2FC_CREATE_LINK_UP)
2249 interface->enabled = true;
2250
2251 /*
2252 * Release from kref_init in bnx2fc_interface_setup, on success
2253 * lport should be holding a reference taken in bnx2fc_if_create
2254 */
2255 bnx2fc_interface_put(interface);
2256 /* put netdev that was held while calling dev_get_by_name */
2257 mutex_unlock(&bnx2fc_dev_lock);
2258 rtnl_unlock();
2259 return 0;
2260
2261 if_create_err:
2262 destroy_workqueue(interface->timer_work_queue);
2263 ifput_err:
2264 bnx2fc_net_cleanup(interface);
2265 bnx2fc_interface_put(interface);
2266 goto mod_err;
2267 netdev_err:
2268 module_put(THIS_MODULE);
2269 mod_err:
2270 mutex_unlock(&bnx2fc_dev_lock);
2271 rtnl_unlock();
2272 return rc;
2273 }
2274
2275 /**
2276 * bnx2fc_create() - Create a bnx2fc interface
2277 * @netdev : The net_device object the Ethernet interface to create on
2278 * @fip_mode: The FIP mode for this creation
2279 *
2280 * Called from fcoe transport
2281 *
2282 * Returns: 0 for success
2283 */
2284 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2285 {
2286 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2287 }
2288
2289 /**
2290 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2291 * @netdev: The net_device to be used by the allocated FCoE Controller
2292 *
2293 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2294 * in a link_down state. The allows the user an opportunity to configure
2295 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2296 *
2297 * Creating in with this routine starts the FCoE Controller in Fabric
2298 * mode. The user can change to VN2VN or another mode before enabling.
2299 */
2300 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2301 {
2302 return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2303 BNX2FC_CREATE_LINK_DOWN);
2304 }
2305
2306 /**
2307 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2308 *
2309 * @cnic: Pointer to cnic device instance
2310 *
2311 **/
2312 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2313 {
2314 struct bnx2fc_hba *hba;
2315
2316 /* Called with bnx2fc_dev_lock held */
2317 list_for_each_entry(hba, &adapter_list, list) {
2318 if (hba->cnic == cnic)
2319 return hba;
2320 }
2321 return NULL;
2322 }
2323
2324 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2325 *netdev)
2326 {
2327 struct bnx2fc_interface *interface;
2328
2329 /* Called with bnx2fc_dev_lock held */
2330 list_for_each_entry(interface, &if_list, list) {
2331 if (interface->netdev == netdev)
2332 return interface;
2333 }
2334 return NULL;
2335 }
2336
2337 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2338 *phys_dev)
2339 {
2340 struct bnx2fc_hba *hba;
2341
2342 /* Called with bnx2fc_dev_lock held */
2343 list_for_each_entry(hba, &adapter_list, list) {
2344 if (hba->phys_dev == phys_dev)
2345 return hba;
2346 }
2347 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2348 return NULL;
2349 }
2350
2351 /**
2352 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2353 *
2354 * @dev cnic device handle
2355 */
2356 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2357 {
2358 struct bnx2fc_hba *hba;
2359 struct bnx2fc_interface *interface, *tmp;
2360
2361 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2362
2363 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2364 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2365 dev->netdev->name, dev->flags);
2366 return;
2367 }
2368
2369 mutex_lock(&bnx2fc_dev_lock);
2370 hba = bnx2fc_find_hba_for_cnic(dev);
2371 if (!hba) {
2372 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2373 dev);
2374 mutex_unlock(&bnx2fc_dev_lock);
2375 return;
2376 }
2377
2378 list_del_init(&hba->list);
2379 adapter_count--;
2380
2381 list_for_each_entry_safe(interface, tmp, &if_list, list)
2382 /* destroy not called yet, move to quiesced list */
2383 if (interface->hba == hba)
2384 __bnx2fc_destroy(interface);
2385 mutex_unlock(&bnx2fc_dev_lock);
2386
2387 /* Ensure ALL destroy work has been completed before return */
2388 flush_workqueue(bnx2fc_wq);
2389
2390 bnx2fc_ulp_stop(hba);
2391 /* unregister cnic device */
2392 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2393 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2394 bnx2fc_hba_destroy(hba);
2395 }
2396
2397 /**
2398 * bnx2fc_fcoe_reset - Resets the fcoe
2399 *
2400 * @shost: shost the reset is from
2401 *
2402 * Returns: always 0
2403 */
2404 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2405 {
2406 struct fc_lport *lport = shost_priv(shost);
2407 fc_lport_reset(lport);
2408 return 0;
2409 }
2410
2411
2412 static bool bnx2fc_match(struct net_device *netdev)
2413 {
2414 struct net_device *phys_dev = netdev;
2415
2416 mutex_lock(&bnx2fc_dev_lock);
2417 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2418 phys_dev = vlan_dev_real_dev(netdev);
2419
2420 if (bnx2fc_hba_lookup(phys_dev)) {
2421 mutex_unlock(&bnx2fc_dev_lock);
2422 return true;
2423 }
2424
2425 mutex_unlock(&bnx2fc_dev_lock);
2426 return false;
2427 }
2428
2429
2430 static struct fcoe_transport bnx2fc_transport = {
2431 .name = {"bnx2fc"},
2432 .attached = false,
2433 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2434 .alloc = bnx2fc_ctlr_alloc,
2435 .match = bnx2fc_match,
2436 .create = bnx2fc_create,
2437 .destroy = bnx2fc_destroy,
2438 .enable = bnx2fc_enable,
2439 .disable = bnx2fc_disable,
2440 };
2441
2442 /**
2443 * bnx2fc_percpu_thread_create - Create a receive thread for an
2444 * online CPU
2445 *
2446 * @cpu: cpu index for the online cpu
2447 */
2448 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2449 {
2450 struct bnx2fc_percpu_s *p;
2451 struct task_struct *thread;
2452
2453 p = &per_cpu(bnx2fc_percpu, cpu);
2454
2455 thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2456 (void *)p, cpu_to_node(cpu),
2457 "bnx2fc_thread/%d", cpu);
2458 /* bind thread to the cpu */
2459 if (likely(!IS_ERR(thread))) {
2460 kthread_bind(thread, cpu);
2461 p->iothread = thread;
2462 wake_up_process(thread);
2463 }
2464 }
2465
2466 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2467 {
2468 struct bnx2fc_percpu_s *p;
2469 struct task_struct *thread;
2470 struct bnx2fc_work *work, *tmp;
2471
2472 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2473
2474 /* Prevent any new work from being queued for this CPU */
2475 p = &per_cpu(bnx2fc_percpu, cpu);
2476 spin_lock_bh(&p->fp_work_lock);
2477 thread = p->iothread;
2478 p->iothread = NULL;
2479
2480
2481 /* Free all work in the list */
2482 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2483 list_del_init(&work->list);
2484 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2485 kfree(work);
2486 }
2487
2488 spin_unlock_bh(&p->fp_work_lock);
2489
2490 if (thread)
2491 kthread_stop(thread);
2492 }
2493
2494 /**
2495 * bnx2fc_cpu_callback - Handler for CPU hotplug events
2496 *
2497 * @nfb: The callback data block
2498 * @action: The event triggering the callback
2499 * @hcpu: The index of the CPU that the event is for
2500 *
2501 * This creates or destroys per-CPU data for fcoe
2502 *
2503 * Returns NOTIFY_OK always.
2504 */
2505 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2506 unsigned long action, void *hcpu)
2507 {
2508 unsigned cpu = (unsigned long)hcpu;
2509
2510 switch (action) {
2511 case CPU_ONLINE:
2512 case CPU_ONLINE_FROZEN:
2513 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2514 bnx2fc_percpu_thread_create(cpu);
2515 break;
2516 case CPU_DEAD:
2517 case CPU_DEAD_FROZEN:
2518 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2519 bnx2fc_percpu_thread_destroy(cpu);
2520 break;
2521 default:
2522 break;
2523 }
2524 return NOTIFY_OK;
2525 }
2526
2527 /**
2528 * bnx2fc_mod_init - module init entry point
2529 *
2530 * Initialize driver wide global data structures, and register
2531 * with cnic module
2532 **/
2533 static int __init bnx2fc_mod_init(void)
2534 {
2535 struct fcoe_percpu_s *bg;
2536 struct task_struct *l2_thread;
2537 int rc = 0;
2538 unsigned int cpu = 0;
2539 struct bnx2fc_percpu_s *p;
2540
2541 printk(KERN_INFO PFX "%s", version);
2542
2543 /* register as a fcoe transport */
2544 rc = fcoe_transport_attach(&bnx2fc_transport);
2545 if (rc) {
2546 printk(KERN_ERR "failed to register an fcoe transport, check "
2547 "if libfcoe is loaded\n");
2548 goto out;
2549 }
2550
2551 INIT_LIST_HEAD(&adapter_list);
2552 INIT_LIST_HEAD(&if_list);
2553 mutex_init(&bnx2fc_dev_lock);
2554 adapter_count = 0;
2555
2556 /* Attach FC transport template */
2557 rc = bnx2fc_attach_transport();
2558 if (rc)
2559 goto detach_ft;
2560
2561 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2562 if (!bnx2fc_wq) {
2563 rc = -ENOMEM;
2564 goto release_bt;
2565 }
2566
2567 bg = &bnx2fc_global;
2568 skb_queue_head_init(&bg->fcoe_rx_list);
2569 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2570 (void *)bg,
2571 "bnx2fc_l2_thread");
2572 if (IS_ERR(l2_thread)) {
2573 rc = PTR_ERR(l2_thread);
2574 goto free_wq;
2575 }
2576 wake_up_process(l2_thread);
2577 spin_lock_bh(&bg->fcoe_rx_list.lock);
2578 bg->thread = l2_thread;
2579 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2580
2581 for_each_possible_cpu(cpu) {
2582 p = &per_cpu(bnx2fc_percpu, cpu);
2583 INIT_LIST_HEAD(&p->work_list);
2584 spin_lock_init(&p->fp_work_lock);
2585 }
2586
2587 cpu_notifier_register_begin();
2588
2589 for_each_online_cpu(cpu) {
2590 bnx2fc_percpu_thread_create(cpu);
2591 }
2592
2593 /* Initialize per CPU interrupt thread */
2594 __register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2595
2596 cpu_notifier_register_done();
2597
2598 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2599
2600 return 0;
2601
2602 free_wq:
2603 destroy_workqueue(bnx2fc_wq);
2604 release_bt:
2605 bnx2fc_release_transport();
2606 detach_ft:
2607 fcoe_transport_detach(&bnx2fc_transport);
2608 out:
2609 return rc;
2610 }
2611
2612 static void __exit bnx2fc_mod_exit(void)
2613 {
2614 LIST_HEAD(to_be_deleted);
2615 struct bnx2fc_hba *hba, *next;
2616 struct fcoe_percpu_s *bg;
2617 struct task_struct *l2_thread;
2618 struct sk_buff *skb;
2619 unsigned int cpu = 0;
2620
2621 /*
2622 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2623 * it will have higher precedence than bnx2fc_dev_lock.
2624 * unregister_device() cannot be called with bnx2fc_dev_lock
2625 * held.
2626 */
2627 mutex_lock(&bnx2fc_dev_lock);
2628 list_splice(&adapter_list, &to_be_deleted);
2629 INIT_LIST_HEAD(&adapter_list);
2630 adapter_count = 0;
2631 mutex_unlock(&bnx2fc_dev_lock);
2632
2633 /* Unregister with cnic */
2634 list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2635 list_del_init(&hba->list);
2636 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2637 hba);
2638 bnx2fc_ulp_stop(hba);
2639 /* unregister cnic device */
2640 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2641 &hba->reg_with_cnic))
2642 hba->cnic->unregister_device(hba->cnic,
2643 CNIC_ULP_FCOE);
2644 bnx2fc_hba_destroy(hba);
2645 }
2646 cnic_unregister_driver(CNIC_ULP_FCOE);
2647
2648 /* Destroy global thread */
2649 bg = &bnx2fc_global;
2650 spin_lock_bh(&bg->fcoe_rx_list.lock);
2651 l2_thread = bg->thread;
2652 bg->thread = NULL;
2653 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2654 kfree_skb(skb);
2655
2656 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2657
2658 if (l2_thread)
2659 kthread_stop(l2_thread);
2660
2661 cpu_notifier_register_begin();
2662
2663 /* Destroy per cpu threads */
2664 for_each_online_cpu(cpu) {
2665 bnx2fc_percpu_thread_destroy(cpu);
2666 }
2667
2668 __unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2669
2670 cpu_notifier_register_done();
2671
2672 destroy_workqueue(bnx2fc_wq);
2673 /*
2674 * detach from scsi transport
2675 * must happen after all destroys are done
2676 */
2677 bnx2fc_release_transport();
2678
2679 /* detach from fcoe transport */
2680 fcoe_transport_detach(&bnx2fc_transport);
2681 }
2682
2683 module_init(bnx2fc_mod_init);
2684 module_exit(bnx2fc_mod_exit);
2685
2686 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2687 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2688 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2689 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2690 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2691 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2692 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2693 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2694
2695 .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2696 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2697 };
2698
2699 static struct fc_function_template bnx2fc_transport_function = {
2700 .show_host_node_name = 1,
2701 .show_host_port_name = 1,
2702 .show_host_supported_classes = 1,
2703 .show_host_supported_fc4s = 1,
2704 .show_host_active_fc4s = 1,
2705 .show_host_maxframe_size = 1,
2706
2707 .show_host_port_id = 1,
2708 .show_host_supported_speeds = 1,
2709 .get_host_speed = fc_get_host_speed,
2710 .show_host_speed = 1,
2711 .show_host_port_type = 1,
2712 .get_host_port_state = fc_get_host_port_state,
2713 .show_host_port_state = 1,
2714 .show_host_symbolic_name = 1,
2715
2716 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2717 sizeof(struct bnx2fc_rport)),
2718 .show_rport_maxframe_size = 1,
2719 .show_rport_supported_classes = 1,
2720
2721 .show_host_fabric_name = 1,
2722 .show_starget_node_name = 1,
2723 .show_starget_port_name = 1,
2724 .show_starget_port_id = 1,
2725 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2726 .show_rport_dev_loss_tmo = 1,
2727 .get_fc_host_stats = bnx2fc_get_host_stats,
2728
2729 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2730
2731 .terminate_rport_io = fc_rport_terminate_io,
2732
2733 .vport_create = bnx2fc_vport_create,
2734 .vport_delete = bnx2fc_vport_destroy,
2735 .vport_disable = bnx2fc_vport_disable,
2736 .bsg_request = fc_lport_bsg_request,
2737 };
2738
2739 static struct fc_function_template bnx2fc_vport_xport_function = {
2740 .show_host_node_name = 1,
2741 .show_host_port_name = 1,
2742 .show_host_supported_classes = 1,
2743 .show_host_supported_fc4s = 1,
2744 .show_host_active_fc4s = 1,
2745 .show_host_maxframe_size = 1,
2746
2747 .show_host_port_id = 1,
2748 .show_host_supported_speeds = 1,
2749 .get_host_speed = fc_get_host_speed,
2750 .show_host_speed = 1,
2751 .show_host_port_type = 1,
2752 .get_host_port_state = fc_get_host_port_state,
2753 .show_host_port_state = 1,
2754 .show_host_symbolic_name = 1,
2755
2756 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2757 sizeof(struct bnx2fc_rport)),
2758 .show_rport_maxframe_size = 1,
2759 .show_rport_supported_classes = 1,
2760
2761 .show_host_fabric_name = 1,
2762 .show_starget_node_name = 1,
2763 .show_starget_port_name = 1,
2764 .show_starget_port_id = 1,
2765 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2766 .show_rport_dev_loss_tmo = 1,
2767 .get_fc_host_stats = fc_get_host_stats,
2768 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2769 .terminate_rport_io = fc_rport_terminate_io,
2770 .bsg_request = fc_lport_bsg_request,
2771 };
2772
2773 /**
2774 * scsi_host_template structure used while registering with SCSI-ml
2775 */
2776 static struct scsi_host_template bnx2fc_shost_template = {
2777 .module = THIS_MODULE,
2778 .name = "Broadcom Offload FCoE Initiator",
2779 .queuecommand = bnx2fc_queuecommand,
2780 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2781 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2782 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2783 .eh_host_reset_handler = fc_eh_host_reset,
2784 .slave_alloc = fc_slave_alloc,
2785 .change_queue_depth = fc_change_queue_depth,
2786 .change_queue_type = fc_change_queue_type,
2787 .this_id = -1,
2788 .cmd_per_lun = 3,
2789 .use_clustering = ENABLE_CLUSTERING,
2790 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2791 .max_sectors = 1024,
2792 };
2793
2794 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2795 .frame_send = bnx2fc_xmit,
2796 .elsct_send = bnx2fc_elsct_send,
2797 .fcp_abort_io = bnx2fc_abort_io,
2798 .fcp_cleanup = bnx2fc_cleanup,
2799 .get_lesb = fcoe_get_lesb,
2800 .rport_event_callback = bnx2fc_rport_event_handler,
2801 };
2802
2803 /**
2804 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2805 * structure carrying callback function pointers
2806 */
2807 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2808 .owner = THIS_MODULE,
2809 .cnic_init = bnx2fc_ulp_init,
2810 .cnic_exit = bnx2fc_ulp_exit,
2811 .cnic_start = bnx2fc_ulp_start,
2812 .cnic_stop = bnx2fc_ulp_stop,
2813 .indicate_kcqes = bnx2fc_indicate_kcqe,
2814 .indicate_netevent = bnx2fc_indicate_netevent,
2815 .cnic_get_stats = bnx2fc_ulp_get_stats,
2816 };
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git