?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
x86/xen: resume timer irqs early
[linux/fpc-iii.git] / drivers / scsi / bnx2fc / bnx2fc_fcoe.c
blob69ac55495c1d7479d75f79b13fdb22659875b95c
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 "Mar 08, 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, -20);
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 stats = per_cpu_ptr(lport->stats, get_cpu());
520 stats->RxFrames++;
521 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
522
523 fp = (struct fc_frame *)skb;
524 fc_frame_init(fp);
525 fr_dev(fp) = lport;
526 fr_sof(fp) = hp->fcoe_sof;
527 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
528 put_cpu();
529 kfree_skb(skb);
530 return;
531 }
532 fr_eof(fp) = crc_eof.fcoe_eof;
533 fr_crc(fp) = crc_eof.fcoe_crc32;
534 if (pskb_trim(skb, fr_len)) {
535 put_cpu();
536 kfree_skb(skb);
537 return;
538 }
539
540 fh = fc_frame_header_get(fp);
541
542 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
543 if (vn_port) {
544 port = lport_priv(vn_port);
545 if (compare_ether_addr(port->data_src_addr, dest_mac)
546 != 0) {
547 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
548 put_cpu();
549 kfree_skb(skb);
550 return;
551 }
552 }
553 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
554 fh->fh_type == FC_TYPE_FCP) {
555 /* Drop FCP data. We dont this in L2 path */
556 put_cpu();
557 kfree_skb(skb);
558 return;
559 }
560 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
561 fh->fh_type == FC_TYPE_ELS) {
562 switch (fc_frame_payload_op(fp)) {
563 case ELS_LOGO:
564 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
565 /* drop non-FIP LOGO */
566 put_cpu();
567 kfree_skb(skb);
568 return;
569 }
570 break;
571 }
572 }
573
574 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
575 /* Drop incoming ABTS */
576 put_cpu();
577 kfree_skb(skb);
578 return;
579 }
580
581 if (le32_to_cpu(fr_crc(fp)) !=
582 ~crc32(~0, skb->data, fr_len)) {
583 if (stats->InvalidCRCCount < 5)
584 printk(KERN_WARNING PFX "dropping frame with "
585 "CRC error\n");
586 stats->InvalidCRCCount++;
587 put_cpu();
588 kfree_skb(skb);
589 return;
590 }
591 put_cpu();
592 fc_exch_recv(lport, fp);
593 }
594
595 /**
596 * bnx2fc_percpu_io_thread - thread per cpu for ios
597 *
598 * @arg: ptr to bnx2fc_percpu_info structure
599 */
600 int bnx2fc_percpu_io_thread(void *arg)
601 {
602 struct bnx2fc_percpu_s *p = arg;
603 struct bnx2fc_work *work, *tmp;
604 LIST_HEAD(work_list);
605
606 set_user_nice(current, -20);
607 set_current_state(TASK_INTERRUPTIBLE);
608 while (!kthread_should_stop()) {
609 schedule();
610 spin_lock_bh(&p->fp_work_lock);
611 while (!list_empty(&p->work_list)) {
612 list_splice_init(&p->work_list, &work_list);
613 spin_unlock_bh(&p->fp_work_lock);
614
615 list_for_each_entry_safe(work, tmp, &work_list, list) {
616 list_del_init(&work->list);
617 bnx2fc_process_cq_compl(work->tgt, work->wqe);
618 kfree(work);
619 }
620
621 spin_lock_bh(&p->fp_work_lock);
622 }
623 __set_current_state(TASK_INTERRUPTIBLE);
624 spin_unlock_bh(&p->fp_work_lock);
625 }
626 __set_current_state(TASK_RUNNING);
627
628 return 0;
629 }
630
631 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
632 {
633 struct fc_host_statistics *bnx2fc_stats;
634 struct fc_lport *lport = shost_priv(shost);
635 struct fcoe_port *port = lport_priv(lport);
636 struct bnx2fc_interface *interface = port->priv;
637 struct bnx2fc_hba *hba = interface->hba;
638 struct fcoe_statistics_params *fw_stats;
639 int rc = 0;
640
641 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
642 if (!fw_stats)
643 return NULL;
644
645 bnx2fc_stats = fc_get_host_stats(shost);
646
647 init_completion(&hba->stat_req_done);
648 if (bnx2fc_send_stat_req(hba))
649 return bnx2fc_stats;
650 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
651 if (!rc) {
652 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
653 return bnx2fc_stats;
654 }
655 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
656 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
657 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
658 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
659 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
660 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
661 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
662 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
663 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
664 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
665
666 bnx2fc_stats->dumped_frames = 0;
667 bnx2fc_stats->lip_count = 0;
668 bnx2fc_stats->nos_count = 0;
669 bnx2fc_stats->loss_of_sync_count = 0;
670 bnx2fc_stats->loss_of_signal_count = 0;
671 bnx2fc_stats->prim_seq_protocol_err_count = 0;
672
673 memcpy(&hba->prev_stats, hba->stats_buffer,
674 sizeof(struct fcoe_statistics_params));
675 return bnx2fc_stats;
676 }
677
678 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
679 {
680 struct fcoe_port *port = lport_priv(lport);
681 struct bnx2fc_interface *interface = port->priv;
682 struct bnx2fc_hba *hba = interface->hba;
683 struct Scsi_Host *shost = lport->host;
684 int rc = 0;
685
686 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
687 shost->max_lun = BNX2FC_MAX_LUN;
688 shost->max_id = BNX2FC_MAX_FCP_TGT;
689 shost->max_channel = 0;
690 if (lport->vport)
691 shost->transportt = bnx2fc_vport_xport_template;
692 else
693 shost->transportt = bnx2fc_transport_template;
694
695 /* Add the new host to SCSI-ml */
696 rc = scsi_add_host(lport->host, dev);
697 if (rc) {
698 printk(KERN_ERR PFX "Error on scsi_add_host\n");
699 return rc;
700 }
701 if (!lport->vport)
702 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
703 snprintf(fc_host_symbolic_name(lport->host), 256,
704 "%s (Broadcom %s) v%s over %s",
705 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
706 interface->netdev->name);
707
708 return 0;
709 }
710
711 static int bnx2fc_link_ok(struct fc_lport *lport)
712 {
713 struct fcoe_port *port = lport_priv(lport);
714 struct bnx2fc_interface *interface = port->priv;
715 struct bnx2fc_hba *hba = interface->hba;
716 struct net_device *dev = hba->phys_dev;
717 int rc = 0;
718
719 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
720 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
721 else {
722 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
723 rc = -1;
724 }
725 return rc;
726 }
727
728 /**
729 * bnx2fc_get_link_state - get network link state
730 *
731 * @hba: adapter instance pointer
732 *
733 * updates adapter structure flag based on netdev state
734 */
735 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
736 {
737 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
738 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
739 else
740 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
741 }
742
743 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
744 {
745 struct bnx2fc_hba *hba;
746 struct bnx2fc_interface *interface;
747 struct fcoe_ctlr *ctlr;
748 struct fcoe_port *port;
749 u64 wwnn, wwpn;
750
751 port = lport_priv(lport);
752 interface = port->priv;
753 ctlr = bnx2fc_to_ctlr(interface);
754 hba = interface->hba;
755
756 /* require support for get_pauseparam ethtool op. */
757 if (!hba->phys_dev->ethtool_ops ||
758 !hba->phys_dev->ethtool_ops->get_pauseparam)
759 return -EOPNOTSUPP;
760
761 if (fc_set_mfs(lport, BNX2FC_MFS))
762 return -EINVAL;
763
764 skb_queue_head_init(&port->fcoe_pending_queue);
765 port->fcoe_pending_queue_active = 0;
766 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
767
768 fcoe_link_speed_update(lport);
769
770 if (!lport->vport) {
771 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
772 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
773 1, 0);
774 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
775 fc_set_wwnn(lport, wwnn);
776
777 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
778 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
779 2, 0);
780
781 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
782 fc_set_wwpn(lport, wwpn);
783 }
784
785 return 0;
786 }
787
788 static void bnx2fc_destroy_timer(unsigned long data)
789 {
790 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
791
792 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
793 "Destroy compl not received!!\n");
794 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
795 wake_up_interruptible(&hba->destroy_wait);
796 }
797
798 /**
799 * bnx2fc_indicate_netevent - Generic netdev event handler
800 *
801 * @context: adapter structure pointer
802 * @event: event type
803 * @vlan_id: vlan id - associated vlan id with this event
804 *
805 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
806 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
807 */
808 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
809 u16 vlan_id)
810 {
811 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
812 struct fcoe_ctlr_device *cdev;
813 struct fc_lport *lport;
814 struct fc_lport *vport;
815 struct bnx2fc_interface *interface, *tmp;
816 struct fcoe_ctlr *ctlr;
817 int wait_for_upload = 0;
818 u32 link_possible = 1;
819
820 if (vlan_id != 0 && event != NETDEV_UNREGISTER)
821 return;
822
823 switch (event) {
824 case NETDEV_UP:
825 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
826 printk(KERN_ERR "indicate_netevent: "\
827 "hba is not UP!!\n");
828 break;
829
830 case NETDEV_DOWN:
831 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
832 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
833 link_possible = 0;
834 break;
835
836 case NETDEV_GOING_DOWN:
837 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
838 link_possible = 0;
839 break;
840
841 case NETDEV_CHANGE:
842 break;
843
844 case NETDEV_UNREGISTER:
845 if (!vlan_id)
846 return;
847 mutex_lock(&bnx2fc_dev_lock);
848 list_for_each_entry_safe(interface, tmp, &if_list, list) {
849 if (interface->hba == hba &&
850 interface->vlan_id == (vlan_id & VLAN_VID_MASK))
851 __bnx2fc_destroy(interface);
852 }
853 mutex_unlock(&bnx2fc_dev_lock);
854 return;
855
856 default:
857 printk(KERN_ERR PFX "Unknown netevent %ld", event);
858 return;
859 }
860
861 mutex_lock(&bnx2fc_dev_lock);
862 list_for_each_entry(interface, &if_list, list) {
863
864 if (interface->hba != hba)
865 continue;
866
867 ctlr = bnx2fc_to_ctlr(interface);
868 lport = ctlr->lp;
869 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
870 interface->netdev->name, event);
871
872 fcoe_link_speed_update(lport);
873
874 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
875
876 if (link_possible && !bnx2fc_link_ok(lport)) {
877 switch (cdev->enabled) {
878 case FCOE_CTLR_DISABLED:
879 pr_info("Link up while interface is disabled.\n");
880 break;
881 case FCOE_CTLR_ENABLED:
882 case FCOE_CTLR_UNUSED:
883 /* Reset max recv frame size to default */
884 fc_set_mfs(lport, BNX2FC_MFS);
885 /*
886 * ctlr link up will only be handled during
887 * enable to avoid sending discovery
888 * solicitation on a stale vlan
889 */
890 if (interface->enabled)
891 fcoe_ctlr_link_up(ctlr);
892 };
893 } else if (fcoe_ctlr_link_down(ctlr)) {
894 switch (cdev->enabled) {
895 case FCOE_CTLR_DISABLED:
896 pr_info("Link down while interface is disabled.\n");
897 break;
898 case FCOE_CTLR_ENABLED:
899 case FCOE_CTLR_UNUSED:
900 mutex_lock(&lport->lp_mutex);
901 list_for_each_entry(vport, &lport->vports, list)
902 fc_host_port_type(vport->host) =
903 FC_PORTTYPE_UNKNOWN;
904 mutex_unlock(&lport->lp_mutex);
905 fc_host_port_type(lport->host) =
906 FC_PORTTYPE_UNKNOWN;
907 per_cpu_ptr(lport->stats,
908 get_cpu())->LinkFailureCount++;
909 put_cpu();
910 fcoe_clean_pending_queue(lport);
911 wait_for_upload = 1;
912 };
913 }
914 }
915 mutex_unlock(&bnx2fc_dev_lock);
916
917 if (wait_for_upload) {
918 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
919 init_waitqueue_head(&hba->shutdown_wait);
920 BNX2FC_MISC_DBG("indicate_netevent "
921 "num_ofld_sess = %d\n",
922 hba->num_ofld_sess);
923 hba->wait_for_link_down = 1;
924 wait_event_interruptible(hba->shutdown_wait,
925 (hba->num_ofld_sess == 0));
926 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
927 hba->num_ofld_sess);
928 hba->wait_for_link_down = 0;
929
930 if (signal_pending(current))
931 flush_signals(current);
932 }
933 }
934
935 static int bnx2fc_libfc_config(struct fc_lport *lport)
936 {
937
938 /* Set the function pointers set by bnx2fc driver */
939 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
940 sizeof(struct libfc_function_template));
941 fc_elsct_init(lport);
942 fc_exch_init(lport);
943 fc_rport_init(lport);
944 fc_disc_init(lport);
945 fc_disc_config(lport, lport);
946 return 0;
947 }
948
949 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
950 {
951 int fcoe_min_xid, fcoe_max_xid;
952
953 fcoe_min_xid = hba->max_xid + 1;
954 if (nr_cpu_ids <= 2)
955 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
956 else
957 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
958 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
959 fcoe_max_xid, NULL)) {
960 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
961 return -ENOMEM;
962 }
963
964 return 0;
965 }
966
967 static int bnx2fc_lport_config(struct fc_lport *lport)
968 {
969 lport->link_up = 0;
970 lport->qfull = 0;
971 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
972 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
973 lport->e_d_tov = 2 * 1000;
974 lport->r_a_tov = 10 * 1000;
975
976 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
977 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
978 lport->does_npiv = 1;
979
980 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
981 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
982
983 /* alloc stats structure */
984 if (fc_lport_init_stats(lport))
985 return -ENOMEM;
986
987 /* Finish fc_lport configuration */
988 fc_lport_config(lport);
989
990 return 0;
991 }
992
993 /**
994 * bnx2fc_fip_recv - handle a received FIP frame.
995 *
996 * @skb: the received skb
997 * @dev: associated &net_device
998 * @ptype: the &packet_type structure which was used to register this handler.
999 * @orig_dev: original receive &net_device, in case @ dev is a bond.
1000 *
1001 * Returns: 0 for success
1002 */
1003 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1004 struct packet_type *ptype,
1005 struct net_device *orig_dev)
1006 {
1007 struct bnx2fc_interface *interface;
1008 struct fcoe_ctlr *ctlr;
1009 interface = container_of(ptype, struct bnx2fc_interface,
1010 fip_packet_type);
1011 ctlr = bnx2fc_to_ctlr(interface);
1012 fcoe_ctlr_recv(ctlr, skb);
1013 return 0;
1014 }
1015
1016 /**
1017 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1018 *
1019 * @fip: FCoE controller.
1020 * @old: Unicast MAC address to delete if the MAC is non-zero.
1021 * @new: Unicast MAC address to add.
1022 *
1023 * Remove any previously-set unicast MAC filter.
1024 * Add secondary FCoE MAC address filter for our OUI.
1025 */
1026 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1027 {
1028 struct fcoe_port *port = lport_priv(lport);
1029
1030 memcpy(port->data_src_addr, addr, ETH_ALEN);
1031 }
1032
1033 /**
1034 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1035 *
1036 * @lport: libfc port
1037 */
1038 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1039 {
1040 struct fcoe_port *port;
1041
1042 port = (struct fcoe_port *)lport_priv(lport);
1043 return port->data_src_addr;
1044 }
1045
1046 /**
1047 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1048 *
1049 * @fip: FCoE controller.
1050 * @skb: FIP Packet.
1051 */
1052 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1053 {
1054 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1055 dev_queue_xmit(skb);
1056 }
1057
1058 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1059 {
1060 struct Scsi_Host *shost = vport_to_shost(vport);
1061 struct fc_lport *n_port = shost_priv(shost);
1062 struct fcoe_port *port = lport_priv(n_port);
1063 struct bnx2fc_interface *interface = port->priv;
1064 struct net_device *netdev = interface->netdev;
1065 struct fc_lport *vn_port;
1066 int rc;
1067 char buf[32];
1068
1069 rc = fcoe_validate_vport_create(vport);
1070 if (rc) {
1071 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1072 printk(KERN_ERR PFX "Failed to create vport, "
1073 "WWPN (0x%s) already exists\n",
1074 buf);
1075 return rc;
1076 }
1077
1078 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1079 printk(KERN_ERR PFX "vn ports cannot be created on"
1080 "this interface\n");
1081 return -EIO;
1082 }
1083 rtnl_lock();
1084 mutex_lock(&bnx2fc_dev_lock);
1085 vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1086 mutex_unlock(&bnx2fc_dev_lock);
1087 rtnl_unlock();
1088
1089 if (IS_ERR(vn_port)) {
1090 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1091 netdev->name);
1092 return -EIO;
1093 }
1094
1095 if (disabled) {
1096 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1097 } else {
1098 vn_port->boot_time = jiffies;
1099 fc_lport_init(vn_port);
1100 fc_fabric_login(vn_port);
1101 fc_vport_setlink(vn_port);
1102 }
1103 return 0;
1104 }
1105
1106 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1107 {
1108 struct bnx2fc_lport *blport, *tmp;
1109
1110 spin_lock_bh(&hba->hba_lock);
1111 list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1112 if (blport->lport == lport) {
1113 list_del(&blport->list);
1114 kfree(blport);
1115 }
1116 }
1117 spin_unlock_bh(&hba->hba_lock);
1118 }
1119
1120 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1121 {
1122 struct Scsi_Host *shost = vport_to_shost(vport);
1123 struct fc_lport *n_port = shost_priv(shost);
1124 struct fc_lport *vn_port = vport->dd_data;
1125 struct fcoe_port *port = lport_priv(vn_port);
1126 struct bnx2fc_interface *interface = port->priv;
1127 struct fc_lport *v_port;
1128 bool found = false;
1129
1130 mutex_lock(&n_port->lp_mutex);
1131 list_for_each_entry(v_port, &n_port->vports, list)
1132 if (v_port->vport == vport) {
1133 found = true;
1134 break;
1135 }
1136
1137 if (!found) {
1138 mutex_unlock(&n_port->lp_mutex);
1139 return -ENOENT;
1140 }
1141 list_del(&vn_port->list);
1142 mutex_unlock(&n_port->lp_mutex);
1143 bnx2fc_free_vport(interface->hba, port->lport);
1144 bnx2fc_port_shutdown(port->lport);
1145 bnx2fc_interface_put(interface);
1146 queue_work(bnx2fc_wq, &port->destroy_work);
1147 return 0;
1148 }
1149
1150 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1151 {
1152 struct fc_lport *lport = vport->dd_data;
1153
1154 if (disable) {
1155 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1156 fc_fabric_logoff(lport);
1157 } else {
1158 lport->boot_time = jiffies;
1159 fc_fabric_login(lport);
1160 fc_vport_setlink(lport);
1161 }
1162 return 0;
1163 }
1164
1165
1166 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1167 {
1168 struct net_device *netdev = interface->netdev;
1169 struct net_device *physdev = interface->hba->phys_dev;
1170 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1171 struct netdev_hw_addr *ha;
1172 int sel_san_mac = 0;
1173
1174 /* setup Source MAC Address */
1175 rcu_read_lock();
1176 for_each_dev_addr(physdev, ha) {
1177 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1178 ha->type);
1179 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1180 ha->addr[1], ha->addr[2], ha->addr[3],
1181 ha->addr[4], ha->addr[5]);
1182
1183 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1184 (is_valid_ether_addr(ha->addr))) {
1185 memcpy(ctlr->ctl_src_addr, ha->addr,
1186 ETH_ALEN);
1187 sel_san_mac = 1;
1188 BNX2FC_MISC_DBG("Found SAN MAC\n");
1189 }
1190 }
1191 rcu_read_unlock();
1192
1193 if (!sel_san_mac)
1194 return -ENODEV;
1195
1196 interface->fip_packet_type.func = bnx2fc_fip_recv;
1197 interface->fip_packet_type.type = htons(ETH_P_FIP);
1198 interface->fip_packet_type.dev = netdev;
1199 dev_add_pack(&interface->fip_packet_type);
1200
1201 interface->fcoe_packet_type.func = bnx2fc_rcv;
1202 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1203 interface->fcoe_packet_type.dev = netdev;
1204 dev_add_pack(&interface->fcoe_packet_type);
1205
1206 return 0;
1207 }
1208
1209 static int bnx2fc_attach_transport(void)
1210 {
1211 bnx2fc_transport_template =
1212 fc_attach_transport(&bnx2fc_transport_function);
1213
1214 if (bnx2fc_transport_template == NULL) {
1215 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1216 return -ENODEV;
1217 }
1218
1219 bnx2fc_vport_xport_template =
1220 fc_attach_transport(&bnx2fc_vport_xport_function);
1221 if (bnx2fc_vport_xport_template == NULL) {
1222 printk(KERN_ERR PFX
1223 "Failed to attach FC transport for vport\n");
1224 fc_release_transport(bnx2fc_transport_template);
1225 bnx2fc_transport_template = NULL;
1226 return -ENODEV;
1227 }
1228 return 0;
1229 }
1230 static void bnx2fc_release_transport(void)
1231 {
1232 fc_release_transport(bnx2fc_transport_template);
1233 fc_release_transport(bnx2fc_vport_xport_template);
1234 bnx2fc_transport_template = NULL;
1235 bnx2fc_vport_xport_template = NULL;
1236 }
1237
1238 static void bnx2fc_interface_release(struct kref *kref)
1239 {
1240 struct fcoe_ctlr_device *ctlr_dev;
1241 struct bnx2fc_interface *interface;
1242 struct fcoe_ctlr *ctlr;
1243 struct net_device *netdev;
1244
1245 interface = container_of(kref, struct bnx2fc_interface, kref);
1246 BNX2FC_MISC_DBG("Interface is being released\n");
1247
1248 ctlr = bnx2fc_to_ctlr(interface);
1249 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1250 netdev = interface->netdev;
1251
1252 /* tear-down FIP controller */
1253 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1254 fcoe_ctlr_destroy(ctlr);
1255
1256 fcoe_ctlr_device_delete(ctlr_dev);
1257
1258 dev_put(netdev);
1259 module_put(THIS_MODULE);
1260 }
1261
1262 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1263 {
1264 kref_get(&interface->kref);
1265 }
1266
1267 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1268 {
1269 kref_put(&interface->kref, bnx2fc_interface_release);
1270 }
1271 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1272 {
1273 /* Free the command manager */
1274 if (hba->cmd_mgr) {
1275 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1276 hba->cmd_mgr = NULL;
1277 }
1278 kfree(hba->tgt_ofld_list);
1279 bnx2fc_unbind_pcidev(hba);
1280 kfree(hba);
1281 }
1282
1283 /**
1284 * bnx2fc_hba_create - create a new bnx2fc hba
1285 *
1286 * @cnic: pointer to cnic device
1287 *
1288 * Creates a new FCoE hba on the given device.
1289 *
1290 */
1291 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1292 {
1293 struct bnx2fc_hba *hba;
1294 struct fcoe_capabilities *fcoe_cap;
1295 int rc;
1296
1297 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1298 if (!hba) {
1299 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1300 return NULL;
1301 }
1302 spin_lock_init(&hba->hba_lock);
1303 mutex_init(&hba->hba_mutex);
1304
1305 hba->cnic = cnic;
1306
1307 hba->max_tasks = cnic->max_fcoe_exchanges;
1308 hba->elstm_xids = (hba->max_tasks / 2);
1309 hba->max_outstanding_cmds = hba->elstm_xids;
1310 hba->max_xid = (hba->max_tasks - 1);
1311
1312 rc = bnx2fc_bind_pcidev(hba);
1313 if (rc) {
1314 printk(KERN_ERR PFX "create_adapter: bind error\n");
1315 goto bind_err;
1316 }
1317 hba->phys_dev = cnic->netdev;
1318 hba->next_conn_id = 0;
1319
1320 hba->tgt_ofld_list =
1321 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1322 GFP_KERNEL);
1323 if (!hba->tgt_ofld_list) {
1324 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1325 goto tgtofld_err;
1326 }
1327
1328 hba->num_ofld_sess = 0;
1329
1330 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1331 if (!hba->cmd_mgr) {
1332 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1333 goto cmgr_err;
1334 }
1335 fcoe_cap = &hba->fcoe_cap;
1336
1337 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1338 FCOE_IOS_PER_CONNECTION_SHIFT;
1339 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1340 FCOE_LOGINS_PER_PORT_SHIFT;
1341 fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1342 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1343 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1344 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1345 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1346 FCOE_TARGETS_SUPPORTED_SHIFT;
1347 fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1348 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1349 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1350
1351 init_waitqueue_head(&hba->shutdown_wait);
1352 init_waitqueue_head(&hba->destroy_wait);
1353 INIT_LIST_HEAD(&hba->vports);
1354
1355 return hba;
1356
1357 cmgr_err:
1358 kfree(hba->tgt_ofld_list);
1359 tgtofld_err:
1360 bnx2fc_unbind_pcidev(hba);
1361 bind_err:
1362 kfree(hba);
1363 return NULL;
1364 }
1365
1366 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1367 struct net_device *netdev,
1368 enum fip_state fip_mode)
1369 {
1370 struct fcoe_ctlr_device *ctlr_dev;
1371 struct bnx2fc_interface *interface;
1372 struct fcoe_ctlr *ctlr;
1373 int size;
1374 int rc = 0;
1375
1376 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1377 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1378 size);
1379 if (!ctlr_dev) {
1380 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1381 return NULL;
1382 }
1383 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1384 interface = fcoe_ctlr_priv(ctlr);
1385 dev_hold(netdev);
1386 kref_init(&interface->kref);
1387 interface->hba = hba;
1388 interface->netdev = netdev;
1389
1390 /* Initialize FIP */
1391 fcoe_ctlr_init(ctlr, fip_mode);
1392 ctlr->send = bnx2fc_fip_send;
1393 ctlr->update_mac = bnx2fc_update_src_mac;
1394 ctlr->get_src_addr = bnx2fc_get_src_mac;
1395 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1396
1397 rc = bnx2fc_interface_setup(interface);
1398 if (!rc)
1399 return interface;
1400
1401 fcoe_ctlr_destroy(ctlr);
1402 dev_put(netdev);
1403 fcoe_ctlr_device_delete(ctlr_dev);
1404 return NULL;
1405 }
1406
1407 /**
1408 * bnx2fc_if_create - Create FCoE instance on a given interface
1409 *
1410 * @interface: FCoE interface to create a local port on
1411 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1412 * @npiv: Indicates if the port is vport or not
1413 *
1414 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1415 *
1416 * Returns: Allocated fc_lport or an error pointer
1417 */
1418 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1419 struct device *parent, int npiv)
1420 {
1421 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1422 struct fc_lport *lport, *n_port;
1423 struct fcoe_port *port;
1424 struct Scsi_Host *shost;
1425 struct fc_vport *vport = dev_to_vport(parent);
1426 struct bnx2fc_lport *blport;
1427 struct bnx2fc_hba *hba = interface->hba;
1428 int rc = 0;
1429
1430 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1431 if (!blport) {
1432 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1433 return NULL;
1434 }
1435
1436 /* Allocate Scsi_Host structure */
1437 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1438 if (!npiv)
1439 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1440 else
1441 lport = libfc_vport_create(vport, sizeof(*port));
1442
1443 if (!lport) {
1444 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1445 goto free_blport;
1446 }
1447 shost = lport->host;
1448 port = lport_priv(lport);
1449 port->lport = lport;
1450 port->priv = interface;
1451 port->get_netdev = bnx2fc_netdev;
1452 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1453
1454 /* Configure fcoe_port */
1455 rc = bnx2fc_lport_config(lport);
1456 if (rc)
1457 goto lp_config_err;
1458
1459 if (npiv) {
1460 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1461 vport->node_name, vport->port_name);
1462 fc_set_wwnn(lport, vport->node_name);
1463 fc_set_wwpn(lport, vport->port_name);
1464 }
1465 /* Configure netdev and networking properties of the lport */
1466 rc = bnx2fc_net_config(lport, interface->netdev);
1467 if (rc) {
1468 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1469 goto lp_config_err;
1470 }
1471
1472 rc = bnx2fc_shost_config(lport, parent);
1473 if (rc) {
1474 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1475 interface->netdev->name);
1476 goto lp_config_err;
1477 }
1478
1479 /* Initialize the libfc library */
1480 rc = bnx2fc_libfc_config(lport);
1481 if (rc) {
1482 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1483 goto shost_err;
1484 }
1485 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1486
1487 /* Allocate exchange manager */
1488 if (!npiv)
1489 rc = bnx2fc_em_config(lport, hba);
1490 else {
1491 shost = vport_to_shost(vport);
1492 n_port = shost_priv(shost);
1493 rc = fc_exch_mgr_list_clone(n_port, lport);
1494 }
1495
1496 if (rc) {
1497 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1498 goto shost_err;
1499 }
1500
1501 bnx2fc_interface_get(interface);
1502
1503 spin_lock_bh(&hba->hba_lock);
1504 blport->lport = lport;
1505 list_add_tail(&blport->list, &hba->vports);
1506 spin_unlock_bh(&hba->hba_lock);
1507
1508 return lport;
1509
1510 shost_err:
1511 scsi_remove_host(shost);
1512 lp_config_err:
1513 scsi_host_put(lport->host);
1514 free_blport:
1515 kfree(blport);
1516 return NULL;
1517 }
1518
1519 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1520 {
1521 /* Dont listen for Ethernet packets anymore */
1522 __dev_remove_pack(&interface->fcoe_packet_type);
1523 __dev_remove_pack(&interface->fip_packet_type);
1524 synchronize_net();
1525 }
1526
1527 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1528 {
1529 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1530 struct fc_lport *lport = ctlr->lp;
1531 struct fcoe_port *port = lport_priv(lport);
1532 struct bnx2fc_hba *hba = interface->hba;
1533
1534 /* Stop the transmit retry timer */
1535 del_timer_sync(&port->timer);
1536
1537 /* Free existing transmit skbs */
1538 fcoe_clean_pending_queue(lport);
1539
1540 bnx2fc_net_cleanup(interface);
1541
1542 bnx2fc_free_vport(hba, lport);
1543 }
1544
1545 static void bnx2fc_if_destroy(struct fc_lport *lport)
1546 {
1547
1548 /* Free queued packets for the receive thread */
1549 bnx2fc_clean_rx_queue(lport);
1550
1551 /* Detach from scsi-ml */
1552 fc_remove_host(lport->host);
1553 scsi_remove_host(lport->host);
1554
1555 /*
1556 * Note that only the physical lport will have the exchange manager.
1557 * for vports, this function is NOP
1558 */
1559 fc_exch_mgr_free(lport);
1560
1561 /* Free memory used by statistical counters */
1562 fc_lport_free_stats(lport);
1563
1564 /* Release Scsi_Host */
1565 scsi_host_put(lport->host);
1566 }
1567
1568 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1569 {
1570 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1571 struct fc_lport *lport = ctlr->lp;
1572 struct fcoe_port *port = lport_priv(lport);
1573
1574 bnx2fc_interface_cleanup(interface);
1575 bnx2fc_stop(interface);
1576 list_del(&interface->list);
1577 bnx2fc_interface_put(interface);
1578 queue_work(bnx2fc_wq, &port->destroy_work);
1579 }
1580
1581 /**
1582 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1583 *
1584 * @buffer: The name of the Ethernet interface to be destroyed
1585 * @kp: The associated kernel parameter
1586 *
1587 * Called from sysfs.
1588 *
1589 * Returns: 0 for success
1590 */
1591 static int bnx2fc_destroy(struct net_device *netdev)
1592 {
1593 struct bnx2fc_interface *interface = NULL;
1594 struct workqueue_struct *timer_work_queue;
1595 struct fcoe_ctlr *ctlr;
1596 int rc = 0;
1597
1598 rtnl_lock();
1599 mutex_lock(&bnx2fc_dev_lock);
1600
1601 interface = bnx2fc_interface_lookup(netdev);
1602 ctlr = bnx2fc_to_ctlr(interface);
1603 if (!interface || !ctlr->lp) {
1604 rc = -ENODEV;
1605 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1606 goto netdev_err;
1607 }
1608
1609 timer_work_queue = interface->timer_work_queue;
1610 __bnx2fc_destroy(interface);
1611 destroy_workqueue(timer_work_queue);
1612
1613 netdev_err:
1614 mutex_unlock(&bnx2fc_dev_lock);
1615 rtnl_unlock();
1616 return rc;
1617 }
1618
1619 static void bnx2fc_destroy_work(struct work_struct *work)
1620 {
1621 struct fcoe_port *port;
1622 struct fc_lport *lport;
1623
1624 port = container_of(work, struct fcoe_port, destroy_work);
1625 lport = port->lport;
1626
1627 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1628
1629 bnx2fc_if_destroy(lport);
1630 }
1631
1632 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1633 {
1634 bnx2fc_free_fw_resc(hba);
1635 bnx2fc_free_task_ctx(hba);
1636 }
1637
1638 /**
1639 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1640 * pci structure
1641 *
1642 * @hba: Adapter instance
1643 */
1644 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1645 {
1646 if (bnx2fc_setup_task_ctx(hba))
1647 goto mem_err;
1648
1649 if (bnx2fc_setup_fw_resc(hba))
1650 goto mem_err;
1651
1652 return 0;
1653 mem_err:
1654 bnx2fc_unbind_adapter_devices(hba);
1655 return -ENOMEM;
1656 }
1657
1658 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1659 {
1660 struct cnic_dev *cnic;
1661 struct pci_dev *pdev;
1662
1663 if (!hba->cnic) {
1664 printk(KERN_ERR PFX "cnic is NULL\n");
1665 return -ENODEV;
1666 }
1667 cnic = hba->cnic;
1668 pdev = hba->pcidev = cnic->pcidev;
1669 if (!hba->pcidev)
1670 return -ENODEV;
1671
1672 switch (pdev->device) {
1673 case PCI_DEVICE_ID_NX2_57710:
1674 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1675 break;
1676 case PCI_DEVICE_ID_NX2_57711:
1677 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1678 break;
1679 case PCI_DEVICE_ID_NX2_57712:
1680 case PCI_DEVICE_ID_NX2_57712_MF:
1681 case PCI_DEVICE_ID_NX2_57712_VF:
1682 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1683 break;
1684 case PCI_DEVICE_ID_NX2_57800:
1685 case PCI_DEVICE_ID_NX2_57800_MF:
1686 case PCI_DEVICE_ID_NX2_57800_VF:
1687 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1688 break;
1689 case PCI_DEVICE_ID_NX2_57810:
1690 case PCI_DEVICE_ID_NX2_57810_MF:
1691 case PCI_DEVICE_ID_NX2_57810_VF:
1692 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1693 break;
1694 case PCI_DEVICE_ID_NX2_57840:
1695 case PCI_DEVICE_ID_NX2_57840_MF:
1696 case PCI_DEVICE_ID_NX2_57840_VF:
1697 case PCI_DEVICE_ID_NX2_57840_2_20:
1698 case PCI_DEVICE_ID_NX2_57840_4_10:
1699 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1700 break;
1701 default:
1702 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1703 break;
1704 }
1705 pci_dev_get(hba->pcidev);
1706 return 0;
1707 }
1708
1709 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1710 {
1711 if (hba->pcidev) {
1712 hba->chip_num[0] = '\0';
1713 pci_dev_put(hba->pcidev);
1714 }
1715 hba->pcidev = NULL;
1716 }
1717
1718 /**
1719 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1720 *
1721 * @handle: transport handle pointing to adapter struture
1722 */
1723 static int bnx2fc_ulp_get_stats(void *handle)
1724 {
1725 struct bnx2fc_hba *hba = handle;
1726 struct cnic_dev *cnic;
1727 struct fcoe_stats_info *stats_addr;
1728
1729 if (!hba)
1730 return -EINVAL;
1731
1732 cnic = hba->cnic;
1733 stats_addr = &cnic->stats_addr->fcoe_stat;
1734 if (!stats_addr)
1735 return -EINVAL;
1736
1737 strncpy(stats_addr->version, BNX2FC_VERSION,
1738 sizeof(stats_addr->version));
1739 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1740 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1741
1742 return 0;
1743 }
1744
1745
1746 /**
1747 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1748 *
1749 * @handle: transport handle pointing to adapter structure
1750 *
1751 * This function maps adapter structure to pcidev structure and initiates
1752 * firmware handshake to enable/initialize on-chip FCoE components.
1753 * This bnx2fc - cnic interface api callback is used after following
1754 * conditions are met -
1755 * a) underlying network interface is up (marked by event NETDEV_UP
1756 * from netdev
1757 * b) bnx2fc adatper structure is registered.
1758 */
1759 static void bnx2fc_ulp_start(void *handle)
1760 {
1761 struct bnx2fc_hba *hba = handle;
1762 struct bnx2fc_interface *interface;
1763 struct fcoe_ctlr *ctlr;
1764 struct fc_lport *lport;
1765
1766 mutex_lock(&bnx2fc_dev_lock);
1767
1768 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1769 bnx2fc_fw_init(hba);
1770
1771 BNX2FC_MISC_DBG("bnx2fc started.\n");
1772
1773 list_for_each_entry(interface, &if_list, list) {
1774 if (interface->hba == hba) {
1775 ctlr = bnx2fc_to_ctlr(interface);
1776 lport = ctlr->lp;
1777 /* Kick off Fabric discovery*/
1778 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1779 lport->tt.frame_send = bnx2fc_xmit;
1780 bnx2fc_start_disc(interface);
1781 }
1782 }
1783
1784 mutex_unlock(&bnx2fc_dev_lock);
1785 }
1786
1787 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1788 {
1789 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1790 fc_fabric_logoff(lport);
1791 fc_lport_destroy(lport);
1792 }
1793
1794 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1795 {
1796 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1797 struct fc_lport *lport;
1798 struct fc_lport *vport;
1799
1800 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1801 return;
1802
1803 lport = ctlr->lp;
1804 bnx2fc_port_shutdown(lport);
1805
1806 mutex_lock(&lport->lp_mutex);
1807 list_for_each_entry(vport, &lport->vports, list)
1808 fc_host_port_type(vport->host) =
1809 FC_PORTTYPE_UNKNOWN;
1810 mutex_unlock(&lport->lp_mutex);
1811 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1812 fcoe_ctlr_link_down(ctlr);
1813 fcoe_clean_pending_queue(lport);
1814 }
1815
1816 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1817 {
1818 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1819 int rc = -1;
1820 int i = HZ;
1821
1822 rc = bnx2fc_bind_adapter_devices(hba);
1823 if (rc) {
1824 printk(KERN_ALERT PFX
1825 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1826 goto err_out;
1827 }
1828
1829 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1830 if (rc) {
1831 printk(KERN_ALERT PFX
1832 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1833 goto err_unbind;
1834 }
1835
1836 /*
1837 * Wait until the adapter init message is complete, and adapter
1838 * state is UP.
1839 */
1840 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1841 msleep(BNX2FC_INIT_POLL_TIME);
1842
1843 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1844 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1845 "Ignoring...\n",
1846 hba->cnic->netdev->name);
1847 rc = -1;
1848 goto err_unbind;
1849 }
1850
1851
1852 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1853 return 0;
1854
1855 err_unbind:
1856 bnx2fc_unbind_adapter_devices(hba);
1857 err_out:
1858 return rc;
1859 }
1860
1861 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1862 {
1863 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1864 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1865 init_timer(&hba->destroy_timer);
1866 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1867 jiffies;
1868 hba->destroy_timer.function = bnx2fc_destroy_timer;
1869 hba->destroy_timer.data = (unsigned long)hba;
1870 add_timer(&hba->destroy_timer);
1871 wait_event_interruptible(hba->destroy_wait,
1872 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1873 &hba->flags));
1874 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1875 /* This should never happen */
1876 if (signal_pending(current))
1877 flush_signals(current);
1878
1879 del_timer_sync(&hba->destroy_timer);
1880 }
1881 bnx2fc_unbind_adapter_devices(hba);
1882 }
1883 }
1884
1885 /**
1886 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1887 *
1888 * @handle: transport handle pointing to adapter structure
1889 *
1890 * Driver checks if adapter is already in shutdown mode, if not start
1891 * the shutdown process.
1892 */
1893 static void bnx2fc_ulp_stop(void *handle)
1894 {
1895 struct bnx2fc_hba *hba = handle;
1896 struct bnx2fc_interface *interface;
1897
1898 printk(KERN_ERR "ULP_STOP\n");
1899
1900 mutex_lock(&bnx2fc_dev_lock);
1901 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1902 goto exit;
1903 list_for_each_entry(interface, &if_list, list) {
1904 if (interface->hba == hba)
1905 bnx2fc_stop(interface);
1906 }
1907 BUG_ON(hba->num_ofld_sess != 0);
1908
1909 mutex_lock(&hba->hba_mutex);
1910 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1911 clear_bit(ADAPTER_STATE_GOING_DOWN,
1912 &hba->adapter_state);
1913
1914 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1915 mutex_unlock(&hba->hba_mutex);
1916
1917 bnx2fc_fw_destroy(hba);
1918 exit:
1919 mutex_unlock(&bnx2fc_dev_lock);
1920 }
1921
1922 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1923 {
1924 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1925 struct fc_lport *lport;
1926 int wait_cnt = 0;
1927
1928 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1929 /* Kick off FIP/FLOGI */
1930 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1931 printk(KERN_ERR PFX "Init not done yet\n");
1932 return;
1933 }
1934
1935 lport = ctlr->lp;
1936 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1937
1938 if (!bnx2fc_link_ok(lport) && interface->enabled) {
1939 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1940 fcoe_ctlr_link_up(ctlr);
1941 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1942 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1943 }
1944
1945 /* wait for the FCF to be selected before issuing FLOGI */
1946 while (!ctlr->sel_fcf) {
1947 msleep(250);
1948 /* give up after 3 secs */
1949 if (++wait_cnt > 12)
1950 break;
1951 }
1952
1953 /* Reset max receive frame size to default */
1954 if (fc_set_mfs(lport, BNX2FC_MFS))
1955 return;
1956
1957 fc_lport_init(lport);
1958 fc_fabric_login(lport);
1959 }
1960
1961
1962 /**
1963 * bnx2fc_ulp_init - Initialize an adapter instance
1964 *
1965 * @dev : cnic device handle
1966 * Called from cnic_register_driver() context to initialize all
1967 * enumerated cnic devices. This routine allocates adapter structure
1968 * and other device specific resources.
1969 */
1970 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1971 {
1972 struct bnx2fc_hba *hba;
1973 int rc = 0;
1974
1975 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1976 /* bnx2fc works only when bnx2x is loaded */
1977 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1978 (dev->max_fcoe_conn == 0)) {
1979 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1980 " flags: %lx fcoe_conn: %d\n",
1981 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1982 return;
1983 }
1984
1985 hba = bnx2fc_hba_create(dev);
1986 if (!hba) {
1987 printk(KERN_ERR PFX "hba initialization failed\n");
1988 return;
1989 }
1990
1991 /* Add HBA to the adapter list */
1992 mutex_lock(&bnx2fc_dev_lock);
1993 list_add_tail(&hba->list, &adapter_list);
1994 adapter_count++;
1995 mutex_unlock(&bnx2fc_dev_lock);
1996
1997 dev->fcoe_cap = &hba->fcoe_cap;
1998 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1999 rc = dev->register_device(dev, CNIC_ULP_FCOE,
2000 (void *) hba);
2001 if (rc)
2002 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2003 else
2004 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2005 }
2006
2007 /**
2008 * Deperecated: Use bnx2fc_enabled()
2009 */
2010 static int bnx2fc_disable(struct net_device *netdev)
2011 {
2012 struct bnx2fc_interface *interface;
2013 struct fcoe_ctlr *ctlr;
2014 int rc = 0;
2015
2016 rtnl_lock();
2017 mutex_lock(&bnx2fc_dev_lock);
2018
2019 interface = bnx2fc_interface_lookup(netdev);
2020 ctlr = bnx2fc_to_ctlr(interface);
2021 if (!interface || !ctlr->lp) {
2022 rc = -ENODEV;
2023 printk(KERN_ERR PFX "bnx2fc_disable: interface or lport not found\n");
2024 } else {
2025 interface->enabled = false;
2026 fcoe_ctlr_link_down(ctlr);
2027 fcoe_clean_pending_queue(ctlr->lp);
2028 }
2029
2030 mutex_unlock(&bnx2fc_dev_lock);
2031 rtnl_unlock();
2032 return rc;
2033 }
2034
2035 /**
2036 * Deprecated: Use bnx2fc_enabled()
2037 */
2038 static int bnx2fc_enable(struct net_device *netdev)
2039 {
2040 struct bnx2fc_interface *interface;
2041 struct fcoe_ctlr *ctlr;
2042 int rc = 0;
2043
2044 rtnl_lock();
2045 mutex_lock(&bnx2fc_dev_lock);
2046
2047 interface = bnx2fc_interface_lookup(netdev);
2048 ctlr = bnx2fc_to_ctlr(interface);
2049 if (!interface || !ctlr->lp) {
2050 rc = -ENODEV;
2051 printk(KERN_ERR PFX "bnx2fc_enable: interface or lport not found\n");
2052 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2053 fcoe_ctlr_link_up(ctlr);
2054 interface->enabled = true;
2055 }
2056
2057 mutex_unlock(&bnx2fc_dev_lock);
2058 rtnl_unlock();
2059 return rc;
2060 }
2061
2062 /**
2063 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2064 * @cdev: The FCoE Controller that is being enabled or disabled
2065 *
2066 * fcoe_sysfs will ensure that the state of 'enabled' has
2067 * changed, so no checking is necessary here. This routine simply
2068 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2069 * When those routines are removed the functionality can be merged
2070 * here.
2071 */
2072 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2073 {
2074 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2075 struct fc_lport *lport = ctlr->lp;
2076 struct net_device *netdev = bnx2fc_netdev(lport);
2077
2078 switch (cdev->enabled) {
2079 case FCOE_CTLR_ENABLED:
2080 return bnx2fc_enable(netdev);
2081 case FCOE_CTLR_DISABLED:
2082 return bnx2fc_disable(netdev);
2083 case FCOE_CTLR_UNUSED:
2084 default:
2085 return -ENOTSUPP;
2086 };
2087 }
2088
2089 enum bnx2fc_create_link_state {
2090 BNX2FC_CREATE_LINK_DOWN,
2091 BNX2FC_CREATE_LINK_UP,
2092 };
2093
2094 /**
2095 * _bnx2fc_create() - Create bnx2fc FCoE interface
2096 * @netdev : The net_device object the Ethernet interface to create on
2097 * @fip_mode: The FIP mode for this creation
2098 * @link_state: The ctlr link state on creation
2099 *
2100 * Called from either the libfcoe 'create' module parameter
2101 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2102 *
2103 * libfcoe's 'create' module parameter is deprecated so some
2104 * consolidation of code can be done when that interface is
2105 * removed.
2106 *
2107 * Returns: 0 for success
2108 */
2109 static int _bnx2fc_create(struct net_device *netdev,
2110 enum fip_state fip_mode,
2111 enum bnx2fc_create_link_state link_state)
2112 {
2113 struct fcoe_ctlr_device *cdev;
2114 struct fcoe_ctlr *ctlr;
2115 struct bnx2fc_interface *interface;
2116 struct bnx2fc_hba *hba;
2117 struct net_device *phys_dev = netdev;
2118 struct fc_lport *lport;
2119 struct ethtool_drvinfo drvinfo;
2120 int rc = 0;
2121 int vlan_id = 0;
2122
2123 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2124 if (fip_mode != FIP_MODE_FABRIC) {
2125 printk(KERN_ERR "fip mode not FABRIC\n");
2126 return -EIO;
2127 }
2128
2129 rtnl_lock();
2130
2131 mutex_lock(&bnx2fc_dev_lock);
2132
2133 if (!try_module_get(THIS_MODULE)) {
2134 rc = -EINVAL;
2135 goto mod_err;
2136 }
2137
2138 /* obtain physical netdev */
2139 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2140 phys_dev = vlan_dev_real_dev(netdev);
2141
2142 /* verify if the physical device is a netxtreme2 device */
2143 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2144 memset(&drvinfo, 0, sizeof(drvinfo));
2145 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2146 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2147 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2148 rc = -EINVAL;
2149 goto netdev_err;
2150 }
2151 } else {
2152 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2153 rc = -EINVAL;
2154 goto netdev_err;
2155 }
2156
2157 /* obtain interface and initialize rest of the structure */
2158 hba = bnx2fc_hba_lookup(phys_dev);
2159 if (!hba) {
2160 rc = -ENODEV;
2161 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2162 goto netdev_err;
2163 }
2164
2165 if (bnx2fc_interface_lookup(netdev)) {
2166 rc = -EEXIST;
2167 goto netdev_err;
2168 }
2169
2170 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2171 if (!interface) {
2172 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2173 goto ifput_err;
2174 }
2175
2176 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2177 vlan_id = vlan_dev_vlan_id(netdev);
2178 interface->vlan_enabled = 1;
2179 }
2180
2181 ctlr = bnx2fc_to_ctlr(interface);
2182 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2183 interface->vlan_id = vlan_id;
2184
2185 interface->timer_work_queue =
2186 create_singlethread_workqueue("bnx2fc_timer_wq");
2187 if (!interface->timer_work_queue) {
2188 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2189 rc = -EINVAL;
2190 goto ifput_err;
2191 }
2192
2193 lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2194 if (!lport) {
2195 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2196 netdev->name);
2197 rc = -EINVAL;
2198 goto if_create_err;
2199 }
2200
2201 /* Add interface to if_list */
2202 list_add_tail(&interface->list, &if_list);
2203
2204 lport->boot_time = jiffies;
2205
2206 /* Make this master N_port */
2207 ctlr->lp = lport;
2208
2209 if (link_state == BNX2FC_CREATE_LINK_UP)
2210 cdev->enabled = FCOE_CTLR_ENABLED;
2211 else
2212 cdev->enabled = FCOE_CTLR_DISABLED;
2213
2214 if (link_state == BNX2FC_CREATE_LINK_UP &&
2215 !bnx2fc_link_ok(lport)) {
2216 fcoe_ctlr_link_up(ctlr);
2217 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2218 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2219 }
2220
2221 BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2222 bnx2fc_start_disc(interface);
2223
2224 if (link_state == BNX2FC_CREATE_LINK_UP)
2225 interface->enabled = true;
2226
2227 /*
2228 * Release from kref_init in bnx2fc_interface_setup, on success
2229 * lport should be holding a reference taken in bnx2fc_if_create
2230 */
2231 bnx2fc_interface_put(interface);
2232 /* put netdev that was held while calling dev_get_by_name */
2233 mutex_unlock(&bnx2fc_dev_lock);
2234 rtnl_unlock();
2235 return 0;
2236
2237 if_create_err:
2238 destroy_workqueue(interface->timer_work_queue);
2239 ifput_err:
2240 bnx2fc_net_cleanup(interface);
2241 bnx2fc_interface_put(interface);
2242 goto mod_err;
2243 netdev_err:
2244 module_put(THIS_MODULE);
2245 mod_err:
2246 mutex_unlock(&bnx2fc_dev_lock);
2247 rtnl_unlock();
2248 return rc;
2249 }
2250
2251 /**
2252 * bnx2fc_create() - Create a bnx2fc interface
2253 * @netdev : The net_device object the Ethernet interface to create on
2254 * @fip_mode: The FIP mode for this creation
2255 *
2256 * Called from fcoe transport
2257 *
2258 * Returns: 0 for success
2259 */
2260 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2261 {
2262 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2263 }
2264
2265 /**
2266 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2267 * @netdev: The net_device to be used by the allocated FCoE Controller
2268 *
2269 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2270 * in a link_down state. The allows the user an opportunity to configure
2271 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2272 *
2273 * Creating in with this routine starts the FCoE Controller in Fabric
2274 * mode. The user can change to VN2VN or another mode before enabling.
2275 */
2276 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2277 {
2278 return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2279 BNX2FC_CREATE_LINK_DOWN);
2280 }
2281
2282 /**
2283 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2284 *
2285 * @cnic: Pointer to cnic device instance
2286 *
2287 **/
2288 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2289 {
2290 struct bnx2fc_hba *hba;
2291
2292 /* Called with bnx2fc_dev_lock held */
2293 list_for_each_entry(hba, &adapter_list, list) {
2294 if (hba->cnic == cnic)
2295 return hba;
2296 }
2297 return NULL;
2298 }
2299
2300 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2301 *netdev)
2302 {
2303 struct bnx2fc_interface *interface;
2304
2305 /* Called with bnx2fc_dev_lock held */
2306 list_for_each_entry(interface, &if_list, list) {
2307 if (interface->netdev == netdev)
2308 return interface;
2309 }
2310 return NULL;
2311 }
2312
2313 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2314 *phys_dev)
2315 {
2316 struct bnx2fc_hba *hba;
2317
2318 /* Called with bnx2fc_dev_lock held */
2319 list_for_each_entry(hba, &adapter_list, list) {
2320 if (hba->phys_dev == phys_dev)
2321 return hba;
2322 }
2323 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2324 return NULL;
2325 }
2326
2327 /**
2328 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2329 *
2330 * @dev cnic device handle
2331 */
2332 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2333 {
2334 struct bnx2fc_hba *hba;
2335 struct bnx2fc_interface *interface, *tmp;
2336
2337 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2338
2339 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2340 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2341 dev->netdev->name, dev->flags);
2342 return;
2343 }
2344
2345 mutex_lock(&bnx2fc_dev_lock);
2346 hba = bnx2fc_find_hba_for_cnic(dev);
2347 if (!hba) {
2348 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2349 dev);
2350 mutex_unlock(&bnx2fc_dev_lock);
2351 return;
2352 }
2353
2354 list_del_init(&hba->list);
2355 adapter_count--;
2356
2357 list_for_each_entry_safe(interface, tmp, &if_list, list)
2358 /* destroy not called yet, move to quiesced list */
2359 if (interface->hba == hba)
2360 __bnx2fc_destroy(interface);
2361 mutex_unlock(&bnx2fc_dev_lock);
2362
2363 bnx2fc_ulp_stop(hba);
2364 /* unregister cnic device */
2365 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2366 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2367 bnx2fc_hba_destroy(hba);
2368 }
2369
2370 /**
2371 * bnx2fc_fcoe_reset - Resets the fcoe
2372 *
2373 * @shost: shost the reset is from
2374 *
2375 * Returns: always 0
2376 */
2377 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2378 {
2379 struct fc_lport *lport = shost_priv(shost);
2380 fc_lport_reset(lport);
2381 return 0;
2382 }
2383
2384
2385 static bool bnx2fc_match(struct net_device *netdev)
2386 {
2387 struct net_device *phys_dev = netdev;
2388
2389 mutex_lock(&bnx2fc_dev_lock);
2390 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2391 phys_dev = vlan_dev_real_dev(netdev);
2392
2393 if (bnx2fc_hba_lookup(phys_dev)) {
2394 mutex_unlock(&bnx2fc_dev_lock);
2395 return true;
2396 }
2397
2398 mutex_unlock(&bnx2fc_dev_lock);
2399 return false;
2400 }
2401
2402
2403 static struct fcoe_transport bnx2fc_transport = {
2404 .name = {"bnx2fc"},
2405 .attached = false,
2406 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2407 .alloc = bnx2fc_ctlr_alloc,
2408 .match = bnx2fc_match,
2409 .create = bnx2fc_create,
2410 .destroy = bnx2fc_destroy,
2411 .enable = bnx2fc_enable,
2412 .disable = bnx2fc_disable,
2413 };
2414
2415 /**
2416 * bnx2fc_percpu_thread_create - Create a receive thread for an
2417 * online CPU
2418 *
2419 * @cpu: cpu index for the online cpu
2420 */
2421 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2422 {
2423 struct bnx2fc_percpu_s *p;
2424 struct task_struct *thread;
2425
2426 p = &per_cpu(bnx2fc_percpu, cpu);
2427
2428 thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2429 (void *)p, cpu_to_node(cpu),
2430 "bnx2fc_thread/%d", cpu);
2431 /* bind thread to the cpu */
2432 if (likely(!IS_ERR(thread))) {
2433 kthread_bind(thread, cpu);
2434 p->iothread = thread;
2435 wake_up_process(thread);
2436 }
2437 }
2438
2439 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2440 {
2441 struct bnx2fc_percpu_s *p;
2442 struct task_struct *thread;
2443 struct bnx2fc_work *work, *tmp;
2444
2445 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2446
2447 /* Prevent any new work from being queued for this CPU */
2448 p = &per_cpu(bnx2fc_percpu, cpu);
2449 spin_lock_bh(&p->fp_work_lock);
2450 thread = p->iothread;
2451 p->iothread = NULL;
2452
2453
2454 /* Free all work in the list */
2455 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2456 list_del_init(&work->list);
2457 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2458 kfree(work);
2459 }
2460
2461 spin_unlock_bh(&p->fp_work_lock);
2462
2463 if (thread)
2464 kthread_stop(thread);
2465 }
2466
2467 /**
2468 * bnx2fc_cpu_callback - Handler for CPU hotplug events
2469 *
2470 * @nfb: The callback data block
2471 * @action: The event triggering the callback
2472 * @hcpu: The index of the CPU that the event is for
2473 *
2474 * This creates or destroys per-CPU data for fcoe
2475 *
2476 * Returns NOTIFY_OK always.
2477 */
2478 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2479 unsigned long action, void *hcpu)
2480 {
2481 unsigned cpu = (unsigned long)hcpu;
2482
2483 switch (action) {
2484 case CPU_ONLINE:
2485 case CPU_ONLINE_FROZEN:
2486 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2487 bnx2fc_percpu_thread_create(cpu);
2488 break;
2489 case CPU_DEAD:
2490 case CPU_DEAD_FROZEN:
2491 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2492 bnx2fc_percpu_thread_destroy(cpu);
2493 break;
2494 default:
2495 break;
2496 }
2497 return NOTIFY_OK;
2498 }
2499
2500 /**
2501 * bnx2fc_mod_init - module init entry point
2502 *
2503 * Initialize driver wide global data structures, and register
2504 * with cnic module
2505 **/
2506 static int __init bnx2fc_mod_init(void)
2507 {
2508 struct fcoe_percpu_s *bg;
2509 struct task_struct *l2_thread;
2510 int rc = 0;
2511 unsigned int cpu = 0;
2512 struct bnx2fc_percpu_s *p;
2513
2514 printk(KERN_INFO PFX "%s", version);
2515
2516 /* register as a fcoe transport */
2517 rc = fcoe_transport_attach(&bnx2fc_transport);
2518 if (rc) {
2519 printk(KERN_ERR "failed to register an fcoe transport, check "
2520 "if libfcoe is loaded\n");
2521 goto out;
2522 }
2523
2524 INIT_LIST_HEAD(&adapter_list);
2525 INIT_LIST_HEAD(&if_list);
2526 mutex_init(&bnx2fc_dev_lock);
2527 adapter_count = 0;
2528
2529 /* Attach FC transport template */
2530 rc = bnx2fc_attach_transport();
2531 if (rc)
2532 goto detach_ft;
2533
2534 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2535 if (!bnx2fc_wq) {
2536 rc = -ENOMEM;
2537 goto release_bt;
2538 }
2539
2540 bg = &bnx2fc_global;
2541 skb_queue_head_init(&bg->fcoe_rx_list);
2542 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2543 (void *)bg,
2544 "bnx2fc_l2_thread");
2545 if (IS_ERR(l2_thread)) {
2546 rc = PTR_ERR(l2_thread);
2547 goto free_wq;
2548 }
2549 wake_up_process(l2_thread);
2550 spin_lock_bh(&bg->fcoe_rx_list.lock);
2551 bg->thread = l2_thread;
2552 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2553
2554 for_each_possible_cpu(cpu) {
2555 p = &per_cpu(bnx2fc_percpu, cpu);
2556 INIT_LIST_HEAD(&p->work_list);
2557 spin_lock_init(&p->fp_work_lock);
2558 }
2559
2560 for_each_online_cpu(cpu) {
2561 bnx2fc_percpu_thread_create(cpu);
2562 }
2563
2564 /* Initialize per CPU interrupt thread */
2565 register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2566
2567 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2568
2569 return 0;
2570
2571 free_wq:
2572 destroy_workqueue(bnx2fc_wq);
2573 release_bt:
2574 bnx2fc_release_transport();
2575 detach_ft:
2576 fcoe_transport_detach(&bnx2fc_transport);
2577 out:
2578 return rc;
2579 }
2580
2581 static void __exit bnx2fc_mod_exit(void)
2582 {
2583 LIST_HEAD(to_be_deleted);
2584 struct bnx2fc_hba *hba, *next;
2585 struct fcoe_percpu_s *bg;
2586 struct task_struct *l2_thread;
2587 struct sk_buff *skb;
2588 unsigned int cpu = 0;
2589
2590 /*
2591 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2592 * it will have higher precedence than bnx2fc_dev_lock.
2593 * unregister_device() cannot be called with bnx2fc_dev_lock
2594 * held.
2595 */
2596 mutex_lock(&bnx2fc_dev_lock);
2597 list_splice(&adapter_list, &to_be_deleted);
2598 INIT_LIST_HEAD(&adapter_list);
2599 adapter_count = 0;
2600 mutex_unlock(&bnx2fc_dev_lock);
2601
2602 /* Unregister with cnic */
2603 list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2604 list_del_init(&hba->list);
2605 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2606 hba);
2607 bnx2fc_ulp_stop(hba);
2608 /* unregister cnic device */
2609 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2610 &hba->reg_with_cnic))
2611 hba->cnic->unregister_device(hba->cnic,
2612 CNIC_ULP_FCOE);
2613 bnx2fc_hba_destroy(hba);
2614 }
2615 cnic_unregister_driver(CNIC_ULP_FCOE);
2616
2617 /* Destroy global thread */
2618 bg = &bnx2fc_global;
2619 spin_lock_bh(&bg->fcoe_rx_list.lock);
2620 l2_thread = bg->thread;
2621 bg->thread = NULL;
2622 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2623 kfree_skb(skb);
2624
2625 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2626
2627 if (l2_thread)
2628 kthread_stop(l2_thread);
2629
2630 unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2631
2632 /* Destroy per cpu threads */
2633 for_each_online_cpu(cpu) {
2634 bnx2fc_percpu_thread_destroy(cpu);
2635 }
2636
2637 destroy_workqueue(bnx2fc_wq);
2638 /*
2639 * detach from scsi transport
2640 * must happen after all destroys are done
2641 */
2642 bnx2fc_release_transport();
2643
2644 /* detach from fcoe transport */
2645 fcoe_transport_detach(&bnx2fc_transport);
2646 }
2647
2648 module_init(bnx2fc_mod_init);
2649 module_exit(bnx2fc_mod_exit);
2650
2651 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2652 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2653 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2654 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2655 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2656 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2657 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2658 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2659
2660 .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2661 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2662 };
2663
2664 static struct fc_function_template bnx2fc_transport_function = {
2665 .show_host_node_name = 1,
2666 .show_host_port_name = 1,
2667 .show_host_supported_classes = 1,
2668 .show_host_supported_fc4s = 1,
2669 .show_host_active_fc4s = 1,
2670 .show_host_maxframe_size = 1,
2671
2672 .show_host_port_id = 1,
2673 .show_host_supported_speeds = 1,
2674 .get_host_speed = fc_get_host_speed,
2675 .show_host_speed = 1,
2676 .show_host_port_type = 1,
2677 .get_host_port_state = fc_get_host_port_state,
2678 .show_host_port_state = 1,
2679 .show_host_symbolic_name = 1,
2680
2681 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2682 sizeof(struct bnx2fc_rport)),
2683 .show_rport_maxframe_size = 1,
2684 .show_rport_supported_classes = 1,
2685
2686 .show_host_fabric_name = 1,
2687 .show_starget_node_name = 1,
2688 .show_starget_port_name = 1,
2689 .show_starget_port_id = 1,
2690 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2691 .show_rport_dev_loss_tmo = 1,
2692 .get_fc_host_stats = bnx2fc_get_host_stats,
2693
2694 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2695
2696 .terminate_rport_io = fc_rport_terminate_io,
2697
2698 .vport_create = bnx2fc_vport_create,
2699 .vport_delete = bnx2fc_vport_destroy,
2700 .vport_disable = bnx2fc_vport_disable,
2701 .bsg_request = fc_lport_bsg_request,
2702 };
2703
2704 static struct fc_function_template bnx2fc_vport_xport_function = {
2705 .show_host_node_name = 1,
2706 .show_host_port_name = 1,
2707 .show_host_supported_classes = 1,
2708 .show_host_supported_fc4s = 1,
2709 .show_host_active_fc4s = 1,
2710 .show_host_maxframe_size = 1,
2711
2712 .show_host_port_id = 1,
2713 .show_host_supported_speeds = 1,
2714 .get_host_speed = fc_get_host_speed,
2715 .show_host_speed = 1,
2716 .show_host_port_type = 1,
2717 .get_host_port_state = fc_get_host_port_state,
2718 .show_host_port_state = 1,
2719 .show_host_symbolic_name = 1,
2720
2721 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2722 sizeof(struct bnx2fc_rport)),
2723 .show_rport_maxframe_size = 1,
2724 .show_rport_supported_classes = 1,
2725
2726 .show_host_fabric_name = 1,
2727 .show_starget_node_name = 1,
2728 .show_starget_port_name = 1,
2729 .show_starget_port_id = 1,
2730 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2731 .show_rport_dev_loss_tmo = 1,
2732 .get_fc_host_stats = fc_get_host_stats,
2733 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2734 .terminate_rport_io = fc_rport_terminate_io,
2735 .bsg_request = fc_lport_bsg_request,
2736 };
2737
2738 /**
2739 * scsi_host_template structure used while registering with SCSI-ml
2740 */
2741 static struct scsi_host_template bnx2fc_shost_template = {
2742 .module = THIS_MODULE,
2743 .name = "Broadcom Offload FCoE Initiator",
2744 .queuecommand = bnx2fc_queuecommand,
2745 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2746 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2747 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2748 .eh_host_reset_handler = fc_eh_host_reset,
2749 .slave_alloc = fc_slave_alloc,
2750 .change_queue_depth = fc_change_queue_depth,
2751 .change_queue_type = fc_change_queue_type,
2752 .this_id = -1,
2753 .cmd_per_lun = 3,
2754 .use_clustering = ENABLE_CLUSTERING,
2755 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2756 .max_sectors = 1024,
2757 };
2758
2759 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2760 .frame_send = bnx2fc_xmit,
2761 .elsct_send = bnx2fc_elsct_send,
2762 .fcp_abort_io = bnx2fc_abort_io,
2763 .fcp_cleanup = bnx2fc_cleanup,
2764 .get_lesb = fcoe_get_lesb,
2765 .rport_event_callback = bnx2fc_rport_event_handler,
2766 };
2767
2768 /**
2769 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2770 * structure carrying callback function pointers
2771 */
2772 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2773 .owner = THIS_MODULE,
2774 .cnic_init = bnx2fc_ulp_init,
2775 .cnic_exit = bnx2fc_ulp_exit,
2776 .cnic_start = bnx2fc_ulp_start,
2777 .cnic_stop = bnx2fc_ulp_stop,
2778 .indicate_kcqes = bnx2fc_indicate_kcqe,
2779 .indicate_netevent = bnx2fc_indicate_netevent,
2780 .cnic_get_stats = bnx2fc_ulp_get_stats,
2781 };
Linux with added FPC-III support