?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
mm: page_alloc: do not treat a zone that cannot be used for dirty pages as "full"
[linux/fpc-iii.git] / drivers / scsi / bnx2fc / bnx2fc_fcoe.c
blobcc6b13b81c5357dbc3e2b047980718550f18bae5
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 "Sep 17, 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 struct sk_buff *tmp_skb;
415 unsigned short oxid;
416
417 interface = container_of(ptype, struct bnx2fc_interface,
418 fcoe_packet_type);
419 ctlr = bnx2fc_to_ctlr(interface);
420 lport = ctlr->lp;
421
422 if (unlikely(lport == NULL)) {
423 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
424 goto err;
425 }
426
427 tmp_skb = skb_share_check(skb, GFP_ATOMIC);
428 if (!tmp_skb)
429 goto err;
430
431 skb = tmp_skb;
432
433 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
434 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
435 goto err;
436 }
437
438 /*
439 * Check for minimum frame length, and make sure required FCoE
440 * and FC headers are pulled into the linear data area.
441 */
442 if (unlikely((skb->len < FCOE_MIN_FRAME) ||
443 !pskb_may_pull(skb, FCOE_HEADER_LEN)))
444 goto err;
445
446 skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
447 fh = (struct fc_frame_header *) skb_transport_header(skb);
448
449 oxid = ntohs(fh->fh_ox_id);
450
451 fr = fcoe_dev_from_skb(skb);
452 fr->fr_dev = lport;
453
454 bg = &bnx2fc_global;
455 spin_lock(&bg->fcoe_rx_list.lock);
456
457 __skb_queue_tail(&bg->fcoe_rx_list, skb);
458 if (bg->fcoe_rx_list.qlen == 1)
459 wake_up_process(bg->thread);
460
461 spin_unlock(&bg->fcoe_rx_list.lock);
462
463 return 0;
464 err:
465 kfree_skb(skb);
466 return -1;
467 }
468
469 static int bnx2fc_l2_rcv_thread(void *arg)
470 {
471 struct fcoe_percpu_s *bg = arg;
472 struct sk_buff *skb;
473
474 set_user_nice(current, -20);
475 set_current_state(TASK_INTERRUPTIBLE);
476 while (!kthread_should_stop()) {
477 schedule();
478 spin_lock_bh(&bg->fcoe_rx_list.lock);
479 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
480 spin_unlock_bh(&bg->fcoe_rx_list.lock);
481 bnx2fc_recv_frame(skb);
482 spin_lock_bh(&bg->fcoe_rx_list.lock);
483 }
484 __set_current_state(TASK_INTERRUPTIBLE);
485 spin_unlock_bh(&bg->fcoe_rx_list.lock);
486 }
487 __set_current_state(TASK_RUNNING);
488 return 0;
489 }
490
491
492 static void bnx2fc_recv_frame(struct sk_buff *skb)
493 {
494 u32 fr_len;
495 struct fc_lport *lport;
496 struct fcoe_rcv_info *fr;
497 struct fc_stats *stats;
498 struct fc_frame_header *fh;
499 struct fcoe_crc_eof crc_eof;
500 struct fc_frame *fp;
501 struct fc_lport *vn_port;
502 struct fcoe_port *port;
503 u8 *mac = NULL;
504 u8 *dest_mac = NULL;
505 struct fcoe_hdr *hp;
506
507 fr = fcoe_dev_from_skb(skb);
508 lport = fr->fr_dev;
509 if (unlikely(lport == NULL)) {
510 printk(KERN_ERR PFX "Invalid lport struct\n");
511 kfree_skb(skb);
512 return;
513 }
514
515 if (skb_is_nonlinear(skb))
516 skb_linearize(skb);
517 mac = eth_hdr(skb)->h_source;
518 dest_mac = eth_hdr(skb)->h_dest;
519
520 /* Pull the header */
521 hp = (struct fcoe_hdr *) skb_network_header(skb);
522 fh = (struct fc_frame_header *) skb_transport_header(skb);
523 skb_pull(skb, sizeof(struct fcoe_hdr));
524 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
525
526 stats = per_cpu_ptr(lport->stats, get_cpu());
527 stats->RxFrames++;
528 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
529
530 fp = (struct fc_frame *)skb;
531 fc_frame_init(fp);
532 fr_dev(fp) = lport;
533 fr_sof(fp) = hp->fcoe_sof;
534 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
535 put_cpu();
536 kfree_skb(skb);
537 return;
538 }
539 fr_eof(fp) = crc_eof.fcoe_eof;
540 fr_crc(fp) = crc_eof.fcoe_crc32;
541 if (pskb_trim(skb, fr_len)) {
542 put_cpu();
543 kfree_skb(skb);
544 return;
545 }
546
547 fh = fc_frame_header_get(fp);
548
549 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
550 if (vn_port) {
551 port = lport_priv(vn_port);
552 if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
553 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
554 put_cpu();
555 kfree_skb(skb);
556 return;
557 }
558 }
559 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
560 fh->fh_type == FC_TYPE_FCP) {
561 /* Drop FCP data. We dont this in L2 path */
562 put_cpu();
563 kfree_skb(skb);
564 return;
565 }
566 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
567 fh->fh_type == FC_TYPE_ELS) {
568 switch (fc_frame_payload_op(fp)) {
569 case ELS_LOGO:
570 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
571 /* drop non-FIP LOGO */
572 put_cpu();
573 kfree_skb(skb);
574 return;
575 }
576 break;
577 }
578 }
579
580 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
581 /* Drop incoming ABTS */
582 put_cpu();
583 kfree_skb(skb);
584 return;
585 }
586
587 if (le32_to_cpu(fr_crc(fp)) !=
588 ~crc32(~0, skb->data, fr_len)) {
589 if (stats->InvalidCRCCount < 5)
590 printk(KERN_WARNING PFX "dropping frame with "
591 "CRC error\n");
592 stats->InvalidCRCCount++;
593 put_cpu();
594 kfree_skb(skb);
595 return;
596 }
597 put_cpu();
598 fc_exch_recv(lport, fp);
599 }
600
601 /**
602 * bnx2fc_percpu_io_thread - thread per cpu for ios
603 *
604 * @arg: ptr to bnx2fc_percpu_info structure
605 */
606 int bnx2fc_percpu_io_thread(void *arg)
607 {
608 struct bnx2fc_percpu_s *p = arg;
609 struct bnx2fc_work *work, *tmp;
610 LIST_HEAD(work_list);
611
612 set_user_nice(current, -20);
613 set_current_state(TASK_INTERRUPTIBLE);
614 while (!kthread_should_stop()) {
615 schedule();
616 spin_lock_bh(&p->fp_work_lock);
617 while (!list_empty(&p->work_list)) {
618 list_splice_init(&p->work_list, &work_list);
619 spin_unlock_bh(&p->fp_work_lock);
620
621 list_for_each_entry_safe(work, tmp, &work_list, list) {
622 list_del_init(&work->list);
623 bnx2fc_process_cq_compl(work->tgt, work->wqe);
624 kfree(work);
625 }
626
627 spin_lock_bh(&p->fp_work_lock);
628 }
629 __set_current_state(TASK_INTERRUPTIBLE);
630 spin_unlock_bh(&p->fp_work_lock);
631 }
632 __set_current_state(TASK_RUNNING);
633
634 return 0;
635 }
636
637 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
638 {
639 struct fc_host_statistics *bnx2fc_stats;
640 struct fc_lport *lport = shost_priv(shost);
641 struct fcoe_port *port = lport_priv(lport);
642 struct bnx2fc_interface *interface = port->priv;
643 struct bnx2fc_hba *hba = interface->hba;
644 struct fcoe_statistics_params *fw_stats;
645 int rc = 0;
646
647 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
648 if (!fw_stats)
649 return NULL;
650
651 bnx2fc_stats = fc_get_host_stats(shost);
652
653 init_completion(&hba->stat_req_done);
654 if (bnx2fc_send_stat_req(hba))
655 return bnx2fc_stats;
656 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
657 if (!rc) {
658 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
659 return bnx2fc_stats;
660 }
661 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
662 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
663 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
664 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
665 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
666 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
667 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
668 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
669 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
670 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
671
672 bnx2fc_stats->dumped_frames = 0;
673 bnx2fc_stats->lip_count = 0;
674 bnx2fc_stats->nos_count = 0;
675 bnx2fc_stats->loss_of_sync_count = 0;
676 bnx2fc_stats->loss_of_signal_count = 0;
677 bnx2fc_stats->prim_seq_protocol_err_count = 0;
678
679 memcpy(&hba->prev_stats, hba->stats_buffer,
680 sizeof(struct fcoe_statistics_params));
681 return bnx2fc_stats;
682 }
683
684 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
685 {
686 struct fcoe_port *port = lport_priv(lport);
687 struct bnx2fc_interface *interface = port->priv;
688 struct bnx2fc_hba *hba = interface->hba;
689 struct Scsi_Host *shost = lport->host;
690 int rc = 0;
691
692 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
693 shost->max_lun = BNX2FC_MAX_LUN;
694 shost->max_id = BNX2FC_MAX_FCP_TGT;
695 shost->max_channel = 0;
696 if (lport->vport)
697 shost->transportt = bnx2fc_vport_xport_template;
698 else
699 shost->transportt = bnx2fc_transport_template;
700
701 /* Add the new host to SCSI-ml */
702 rc = scsi_add_host(lport->host, dev);
703 if (rc) {
704 printk(KERN_ERR PFX "Error on scsi_add_host\n");
705 return rc;
706 }
707 if (!lport->vport)
708 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
709 snprintf(fc_host_symbolic_name(lport->host), 256,
710 "%s (Broadcom %s) v%s over %s",
711 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
712 interface->netdev->name);
713
714 return 0;
715 }
716
717 static int bnx2fc_link_ok(struct fc_lport *lport)
718 {
719 struct fcoe_port *port = lport_priv(lport);
720 struct bnx2fc_interface *interface = port->priv;
721 struct bnx2fc_hba *hba = interface->hba;
722 struct net_device *dev = hba->phys_dev;
723 int rc = 0;
724
725 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
726 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
727 else {
728 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
729 rc = -1;
730 }
731 return rc;
732 }
733
734 /**
735 * bnx2fc_get_link_state - get network link state
736 *
737 * @hba: adapter instance pointer
738 *
739 * updates adapter structure flag based on netdev state
740 */
741 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
742 {
743 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
744 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
745 else
746 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
747 }
748
749 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
750 {
751 struct bnx2fc_hba *hba;
752 struct bnx2fc_interface *interface;
753 struct fcoe_ctlr *ctlr;
754 struct fcoe_port *port;
755 u64 wwnn, wwpn;
756
757 port = lport_priv(lport);
758 interface = port->priv;
759 ctlr = bnx2fc_to_ctlr(interface);
760 hba = interface->hba;
761
762 /* require support for get_pauseparam ethtool op. */
763 if (!hba->phys_dev->ethtool_ops ||
764 !hba->phys_dev->ethtool_ops->get_pauseparam)
765 return -EOPNOTSUPP;
766
767 if (fc_set_mfs(lport, BNX2FC_MFS))
768 return -EINVAL;
769
770 skb_queue_head_init(&port->fcoe_pending_queue);
771 port->fcoe_pending_queue_active = 0;
772 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
773
774 fcoe_link_speed_update(lport);
775
776 if (!lport->vport) {
777 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
778 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
779 1, 0);
780 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
781 fc_set_wwnn(lport, wwnn);
782
783 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
784 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
785 2, 0);
786
787 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
788 fc_set_wwpn(lport, wwpn);
789 }
790
791 return 0;
792 }
793
794 static void bnx2fc_destroy_timer(unsigned long data)
795 {
796 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
797
798 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
799 "Destroy compl not received!!\n");
800 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
801 wake_up_interruptible(&hba->destroy_wait);
802 }
803
804 /**
805 * bnx2fc_indicate_netevent - Generic netdev event handler
806 *
807 * @context: adapter structure pointer
808 * @event: event type
809 * @vlan_id: vlan id - associated vlan id with this event
810 *
811 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
812 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
813 */
814 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
815 u16 vlan_id)
816 {
817 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
818 struct fcoe_ctlr_device *cdev;
819 struct fc_lport *lport;
820 struct fc_lport *vport;
821 struct bnx2fc_interface *interface, *tmp;
822 struct fcoe_ctlr *ctlr;
823 int wait_for_upload = 0;
824 u32 link_possible = 1;
825
826 if (vlan_id != 0 && event != NETDEV_UNREGISTER)
827 return;
828
829 switch (event) {
830 case NETDEV_UP:
831 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
832 printk(KERN_ERR "indicate_netevent: "\
833 "hba is not UP!!\n");
834 break;
835
836 case NETDEV_DOWN:
837 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
838 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
839 link_possible = 0;
840 break;
841
842 case NETDEV_GOING_DOWN:
843 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
844 link_possible = 0;
845 break;
846
847 case NETDEV_CHANGE:
848 break;
849
850 case NETDEV_UNREGISTER:
851 if (!vlan_id)
852 return;
853 mutex_lock(&bnx2fc_dev_lock);
854 list_for_each_entry_safe(interface, tmp, &if_list, list) {
855 if (interface->hba == hba &&
856 interface->vlan_id == (vlan_id & VLAN_VID_MASK))
857 __bnx2fc_destroy(interface);
858 }
859 mutex_unlock(&bnx2fc_dev_lock);
860 return;
861
862 default:
863 printk(KERN_ERR PFX "Unknown netevent %ld", event);
864 return;
865 }
866
867 mutex_lock(&bnx2fc_dev_lock);
868 list_for_each_entry(interface, &if_list, list) {
869
870 if (interface->hba != hba)
871 continue;
872
873 ctlr = bnx2fc_to_ctlr(interface);
874 lport = ctlr->lp;
875 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
876 interface->netdev->name, event);
877
878 fcoe_link_speed_update(lport);
879
880 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
881
882 if (link_possible && !bnx2fc_link_ok(lport)) {
883 switch (cdev->enabled) {
884 case FCOE_CTLR_DISABLED:
885 pr_info("Link up while interface is disabled.\n");
886 break;
887 case FCOE_CTLR_ENABLED:
888 case FCOE_CTLR_UNUSED:
889 /* Reset max recv frame size to default */
890 fc_set_mfs(lport, BNX2FC_MFS);
891 /*
892 * ctlr link up will only be handled during
893 * enable to avoid sending discovery
894 * solicitation on a stale vlan
895 */
896 if (interface->enabled)
897 fcoe_ctlr_link_up(ctlr);
898 };
899 } else if (fcoe_ctlr_link_down(ctlr)) {
900 switch (cdev->enabled) {
901 case FCOE_CTLR_DISABLED:
902 pr_info("Link down while interface is disabled.\n");
903 break;
904 case FCOE_CTLR_ENABLED:
905 case FCOE_CTLR_UNUSED:
906 mutex_lock(&lport->lp_mutex);
907 list_for_each_entry(vport, &lport->vports, list)
908 fc_host_port_type(vport->host) =
909 FC_PORTTYPE_UNKNOWN;
910 mutex_unlock(&lport->lp_mutex);
911 fc_host_port_type(lport->host) =
912 FC_PORTTYPE_UNKNOWN;
913 per_cpu_ptr(lport->stats,
914 get_cpu())->LinkFailureCount++;
915 put_cpu();
916 fcoe_clean_pending_queue(lport);
917 wait_for_upload = 1;
918 };
919 }
920 }
921 mutex_unlock(&bnx2fc_dev_lock);
922
923 if (wait_for_upload) {
924 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
925 init_waitqueue_head(&hba->shutdown_wait);
926 BNX2FC_MISC_DBG("indicate_netevent "
927 "num_ofld_sess = %d\n",
928 hba->num_ofld_sess);
929 hba->wait_for_link_down = 1;
930 wait_event_interruptible(hba->shutdown_wait,
931 (hba->num_ofld_sess == 0));
932 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
933 hba->num_ofld_sess);
934 hba->wait_for_link_down = 0;
935
936 if (signal_pending(current))
937 flush_signals(current);
938 }
939 }
940
941 static int bnx2fc_libfc_config(struct fc_lport *lport)
942 {
943
944 /* Set the function pointers set by bnx2fc driver */
945 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
946 sizeof(struct libfc_function_template));
947 fc_elsct_init(lport);
948 fc_exch_init(lport);
949 fc_rport_init(lport);
950 fc_disc_init(lport);
951 fc_disc_config(lport, lport);
952 return 0;
953 }
954
955 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
956 {
957 int fcoe_min_xid, fcoe_max_xid;
958
959 fcoe_min_xid = hba->max_xid + 1;
960 if (nr_cpu_ids <= 2)
961 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
962 else
963 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
964 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
965 fcoe_max_xid, NULL)) {
966 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
967 return -ENOMEM;
968 }
969
970 return 0;
971 }
972
973 static int bnx2fc_lport_config(struct fc_lport *lport)
974 {
975 lport->link_up = 0;
976 lport->qfull = 0;
977 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
978 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
979 lport->e_d_tov = 2 * 1000;
980 lport->r_a_tov = 10 * 1000;
981
982 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
983 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
984 lport->does_npiv = 1;
985
986 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
987 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
988
989 /* alloc stats structure */
990 if (fc_lport_init_stats(lport))
991 return -ENOMEM;
992
993 /* Finish fc_lport configuration */
994 fc_lport_config(lport);
995
996 return 0;
997 }
998
999 /**
1000 * bnx2fc_fip_recv - handle a received FIP frame.
1001 *
1002 * @skb: the received skb
1003 * @dev: associated &net_device
1004 * @ptype: the &packet_type structure which was used to register this handler.
1005 * @orig_dev: original receive &net_device, in case @ dev is a bond.
1006 *
1007 * Returns: 0 for success
1008 */
1009 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1010 struct packet_type *ptype,
1011 struct net_device *orig_dev)
1012 {
1013 struct bnx2fc_interface *interface;
1014 struct fcoe_ctlr *ctlr;
1015 interface = container_of(ptype, struct bnx2fc_interface,
1016 fip_packet_type);
1017 ctlr = bnx2fc_to_ctlr(interface);
1018 fcoe_ctlr_recv(ctlr, skb);
1019 return 0;
1020 }
1021
1022 /**
1023 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1024 *
1025 * @fip: FCoE controller.
1026 * @old: Unicast MAC address to delete if the MAC is non-zero.
1027 * @new: Unicast MAC address to add.
1028 *
1029 * Remove any previously-set unicast MAC filter.
1030 * Add secondary FCoE MAC address filter for our OUI.
1031 */
1032 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1033 {
1034 struct fcoe_port *port = lport_priv(lport);
1035
1036 memcpy(port->data_src_addr, addr, ETH_ALEN);
1037 }
1038
1039 /**
1040 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1041 *
1042 * @lport: libfc port
1043 */
1044 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1045 {
1046 struct fcoe_port *port;
1047
1048 port = (struct fcoe_port *)lport_priv(lport);
1049 return port->data_src_addr;
1050 }
1051
1052 /**
1053 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1054 *
1055 * @fip: FCoE controller.
1056 * @skb: FIP Packet.
1057 */
1058 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1059 {
1060 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1061 dev_queue_xmit(skb);
1062 }
1063
1064 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1065 {
1066 struct Scsi_Host *shost = vport_to_shost(vport);
1067 struct fc_lport *n_port = shost_priv(shost);
1068 struct fcoe_port *port = lport_priv(n_port);
1069 struct bnx2fc_interface *interface = port->priv;
1070 struct net_device *netdev = interface->netdev;
1071 struct fc_lport *vn_port;
1072 int rc;
1073 char buf[32];
1074
1075 rc = fcoe_validate_vport_create(vport);
1076 if (rc) {
1077 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1078 printk(KERN_ERR PFX "Failed to create vport, "
1079 "WWPN (0x%s) already exists\n",
1080 buf);
1081 return rc;
1082 }
1083
1084 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1085 printk(KERN_ERR PFX "vn ports cannot be created on"
1086 "this interface\n");
1087 return -EIO;
1088 }
1089 rtnl_lock();
1090 mutex_lock(&bnx2fc_dev_lock);
1091 vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1092 mutex_unlock(&bnx2fc_dev_lock);
1093 rtnl_unlock();
1094
1095 if (IS_ERR(vn_port)) {
1096 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1097 netdev->name);
1098 return -EIO;
1099 }
1100
1101 if (disabled) {
1102 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1103 } else {
1104 vn_port->boot_time = jiffies;
1105 fc_lport_init(vn_port);
1106 fc_fabric_login(vn_port);
1107 fc_vport_setlink(vn_port);
1108 }
1109 return 0;
1110 }
1111
1112 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1113 {
1114 struct bnx2fc_lport *blport, *tmp;
1115
1116 spin_lock_bh(&hba->hba_lock);
1117 list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1118 if (blport->lport == lport) {
1119 list_del(&blport->list);
1120 kfree(blport);
1121 }
1122 }
1123 spin_unlock_bh(&hba->hba_lock);
1124 }
1125
1126 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1127 {
1128 struct Scsi_Host *shost = vport_to_shost(vport);
1129 struct fc_lport *n_port = shost_priv(shost);
1130 struct fc_lport *vn_port = vport->dd_data;
1131 struct fcoe_port *port = lport_priv(vn_port);
1132 struct bnx2fc_interface *interface = port->priv;
1133 struct fc_lport *v_port;
1134 bool found = false;
1135
1136 mutex_lock(&n_port->lp_mutex);
1137 list_for_each_entry(v_port, &n_port->vports, list)
1138 if (v_port->vport == vport) {
1139 found = true;
1140 break;
1141 }
1142
1143 if (!found) {
1144 mutex_unlock(&n_port->lp_mutex);
1145 return -ENOENT;
1146 }
1147 list_del(&vn_port->list);
1148 mutex_unlock(&n_port->lp_mutex);
1149 bnx2fc_free_vport(interface->hba, port->lport);
1150 bnx2fc_port_shutdown(port->lport);
1151 bnx2fc_interface_put(interface);
1152 queue_work(bnx2fc_wq, &port->destroy_work);
1153 return 0;
1154 }
1155
1156 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1157 {
1158 struct fc_lport *lport = vport->dd_data;
1159
1160 if (disable) {
1161 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1162 fc_fabric_logoff(lport);
1163 } else {
1164 lport->boot_time = jiffies;
1165 fc_fabric_login(lport);
1166 fc_vport_setlink(lport);
1167 }
1168 return 0;
1169 }
1170
1171
1172 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1173 {
1174 struct net_device *netdev = interface->netdev;
1175 struct net_device *physdev = interface->hba->phys_dev;
1176 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1177 struct netdev_hw_addr *ha;
1178 int sel_san_mac = 0;
1179
1180 /* setup Source MAC Address */
1181 rcu_read_lock();
1182 for_each_dev_addr(physdev, ha) {
1183 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1184 ha->type);
1185 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1186 ha->addr[1], ha->addr[2], ha->addr[3],
1187 ha->addr[4], ha->addr[5]);
1188
1189 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1190 (is_valid_ether_addr(ha->addr))) {
1191 memcpy(ctlr->ctl_src_addr, ha->addr,
1192 ETH_ALEN);
1193 sel_san_mac = 1;
1194 BNX2FC_MISC_DBG("Found SAN MAC\n");
1195 }
1196 }
1197 rcu_read_unlock();
1198
1199 if (!sel_san_mac)
1200 return -ENODEV;
1201
1202 interface->fip_packet_type.func = bnx2fc_fip_recv;
1203 interface->fip_packet_type.type = htons(ETH_P_FIP);
1204 interface->fip_packet_type.dev = netdev;
1205 dev_add_pack(&interface->fip_packet_type);
1206
1207 interface->fcoe_packet_type.func = bnx2fc_rcv;
1208 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1209 interface->fcoe_packet_type.dev = netdev;
1210 dev_add_pack(&interface->fcoe_packet_type);
1211
1212 return 0;
1213 }
1214
1215 static int bnx2fc_attach_transport(void)
1216 {
1217 bnx2fc_transport_template =
1218 fc_attach_transport(&bnx2fc_transport_function);
1219
1220 if (bnx2fc_transport_template == NULL) {
1221 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1222 return -ENODEV;
1223 }
1224
1225 bnx2fc_vport_xport_template =
1226 fc_attach_transport(&bnx2fc_vport_xport_function);
1227 if (bnx2fc_vport_xport_template == NULL) {
1228 printk(KERN_ERR PFX
1229 "Failed to attach FC transport for vport\n");
1230 fc_release_transport(bnx2fc_transport_template);
1231 bnx2fc_transport_template = NULL;
1232 return -ENODEV;
1233 }
1234 return 0;
1235 }
1236 static void bnx2fc_release_transport(void)
1237 {
1238 fc_release_transport(bnx2fc_transport_template);
1239 fc_release_transport(bnx2fc_vport_xport_template);
1240 bnx2fc_transport_template = NULL;
1241 bnx2fc_vport_xport_template = NULL;
1242 }
1243
1244 static void bnx2fc_interface_release(struct kref *kref)
1245 {
1246 struct fcoe_ctlr_device *ctlr_dev;
1247 struct bnx2fc_interface *interface;
1248 struct fcoe_ctlr *ctlr;
1249 struct net_device *netdev;
1250
1251 interface = container_of(kref, struct bnx2fc_interface, kref);
1252 BNX2FC_MISC_DBG("Interface is being released\n");
1253
1254 ctlr = bnx2fc_to_ctlr(interface);
1255 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1256 netdev = interface->netdev;
1257
1258 /* tear-down FIP controller */
1259 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1260 fcoe_ctlr_destroy(ctlr);
1261
1262 fcoe_ctlr_device_delete(ctlr_dev);
1263
1264 dev_put(netdev);
1265 module_put(THIS_MODULE);
1266 }
1267
1268 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1269 {
1270 kref_get(&interface->kref);
1271 }
1272
1273 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1274 {
1275 kref_put(&interface->kref, bnx2fc_interface_release);
1276 }
1277 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1278 {
1279 /* Free the command manager */
1280 if (hba->cmd_mgr) {
1281 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1282 hba->cmd_mgr = NULL;
1283 }
1284 kfree(hba->tgt_ofld_list);
1285 bnx2fc_unbind_pcidev(hba);
1286 kfree(hba);
1287 }
1288
1289 /**
1290 * bnx2fc_hba_create - create a new bnx2fc hba
1291 *
1292 * @cnic: pointer to cnic device
1293 *
1294 * Creates a new FCoE hba on the given device.
1295 *
1296 */
1297 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1298 {
1299 struct bnx2fc_hba *hba;
1300 struct fcoe_capabilities *fcoe_cap;
1301 int rc;
1302
1303 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1304 if (!hba) {
1305 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1306 return NULL;
1307 }
1308 spin_lock_init(&hba->hba_lock);
1309 mutex_init(&hba->hba_mutex);
1310
1311 hba->cnic = cnic;
1312
1313 hba->max_tasks = cnic->max_fcoe_exchanges;
1314 hba->elstm_xids = (hba->max_tasks / 2);
1315 hba->max_outstanding_cmds = hba->elstm_xids;
1316 hba->max_xid = (hba->max_tasks - 1);
1317
1318 rc = bnx2fc_bind_pcidev(hba);
1319 if (rc) {
1320 printk(KERN_ERR PFX "create_adapter: bind error\n");
1321 goto bind_err;
1322 }
1323 hba->phys_dev = cnic->netdev;
1324 hba->next_conn_id = 0;
1325
1326 hba->tgt_ofld_list =
1327 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1328 GFP_KERNEL);
1329 if (!hba->tgt_ofld_list) {
1330 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1331 goto tgtofld_err;
1332 }
1333
1334 hba->num_ofld_sess = 0;
1335
1336 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1337 if (!hba->cmd_mgr) {
1338 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1339 goto cmgr_err;
1340 }
1341 fcoe_cap = &hba->fcoe_cap;
1342
1343 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1344 FCOE_IOS_PER_CONNECTION_SHIFT;
1345 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1346 FCOE_LOGINS_PER_PORT_SHIFT;
1347 fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1348 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1349 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1350 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1351 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1352 FCOE_TARGETS_SUPPORTED_SHIFT;
1353 fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1354 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1355 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1356
1357 init_waitqueue_head(&hba->shutdown_wait);
1358 init_waitqueue_head(&hba->destroy_wait);
1359 INIT_LIST_HEAD(&hba->vports);
1360
1361 return hba;
1362
1363 cmgr_err:
1364 kfree(hba->tgt_ofld_list);
1365 tgtofld_err:
1366 bnx2fc_unbind_pcidev(hba);
1367 bind_err:
1368 kfree(hba);
1369 return NULL;
1370 }
1371
1372 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1373 struct net_device *netdev,
1374 enum fip_state fip_mode)
1375 {
1376 struct fcoe_ctlr_device *ctlr_dev;
1377 struct bnx2fc_interface *interface;
1378 struct fcoe_ctlr *ctlr;
1379 int size;
1380 int rc = 0;
1381
1382 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1383 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1384 size);
1385 if (!ctlr_dev) {
1386 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1387 return NULL;
1388 }
1389 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1390 ctlr->cdev = ctlr_dev;
1391 interface = fcoe_ctlr_priv(ctlr);
1392 dev_hold(netdev);
1393 kref_init(&interface->kref);
1394 interface->hba = hba;
1395 interface->netdev = netdev;
1396
1397 /* Initialize FIP */
1398 fcoe_ctlr_init(ctlr, fip_mode);
1399 ctlr->send = bnx2fc_fip_send;
1400 ctlr->update_mac = bnx2fc_update_src_mac;
1401 ctlr->get_src_addr = bnx2fc_get_src_mac;
1402 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1403
1404 rc = bnx2fc_interface_setup(interface);
1405 if (!rc)
1406 return interface;
1407
1408 fcoe_ctlr_destroy(ctlr);
1409 dev_put(netdev);
1410 fcoe_ctlr_device_delete(ctlr_dev);
1411 return NULL;
1412 }
1413
1414 /**
1415 * bnx2fc_if_create - Create FCoE instance on a given interface
1416 *
1417 * @interface: FCoE interface to create a local port on
1418 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1419 * @npiv: Indicates if the port is vport or not
1420 *
1421 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1422 *
1423 * Returns: Allocated fc_lport or an error pointer
1424 */
1425 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1426 struct device *parent, int npiv)
1427 {
1428 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1429 struct fc_lport *lport, *n_port;
1430 struct fcoe_port *port;
1431 struct Scsi_Host *shost;
1432 struct fc_vport *vport = dev_to_vport(parent);
1433 struct bnx2fc_lport *blport;
1434 struct bnx2fc_hba *hba = interface->hba;
1435 int rc = 0;
1436
1437 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1438 if (!blport) {
1439 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1440 return NULL;
1441 }
1442
1443 /* Allocate Scsi_Host structure */
1444 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1445 if (!npiv)
1446 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1447 else
1448 lport = libfc_vport_create(vport, sizeof(*port));
1449
1450 if (!lport) {
1451 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1452 goto free_blport;
1453 }
1454 shost = lport->host;
1455 port = lport_priv(lport);
1456 port->lport = lport;
1457 port->priv = interface;
1458 port->get_netdev = bnx2fc_netdev;
1459 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1460
1461 /* Configure fcoe_port */
1462 rc = bnx2fc_lport_config(lport);
1463 if (rc)
1464 goto lp_config_err;
1465
1466 if (npiv) {
1467 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1468 vport->node_name, vport->port_name);
1469 fc_set_wwnn(lport, vport->node_name);
1470 fc_set_wwpn(lport, vport->port_name);
1471 }
1472 /* Configure netdev and networking properties of the lport */
1473 rc = bnx2fc_net_config(lport, interface->netdev);
1474 if (rc) {
1475 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1476 goto lp_config_err;
1477 }
1478
1479 rc = bnx2fc_shost_config(lport, parent);
1480 if (rc) {
1481 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1482 interface->netdev->name);
1483 goto lp_config_err;
1484 }
1485
1486 /* Initialize the libfc library */
1487 rc = bnx2fc_libfc_config(lport);
1488 if (rc) {
1489 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1490 goto shost_err;
1491 }
1492 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1493
1494 /* Allocate exchange manager */
1495 if (!npiv)
1496 rc = bnx2fc_em_config(lport, hba);
1497 else {
1498 shost = vport_to_shost(vport);
1499 n_port = shost_priv(shost);
1500 rc = fc_exch_mgr_list_clone(n_port, lport);
1501 }
1502
1503 if (rc) {
1504 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1505 goto shost_err;
1506 }
1507
1508 bnx2fc_interface_get(interface);
1509
1510 spin_lock_bh(&hba->hba_lock);
1511 blport->lport = lport;
1512 list_add_tail(&blport->list, &hba->vports);
1513 spin_unlock_bh(&hba->hba_lock);
1514
1515 return lport;
1516
1517 shost_err:
1518 scsi_remove_host(shost);
1519 lp_config_err:
1520 scsi_host_put(lport->host);
1521 free_blport:
1522 kfree(blport);
1523 return NULL;
1524 }
1525
1526 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1527 {
1528 /* Dont listen for Ethernet packets anymore */
1529 __dev_remove_pack(&interface->fcoe_packet_type);
1530 __dev_remove_pack(&interface->fip_packet_type);
1531 synchronize_net();
1532 }
1533
1534 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1535 {
1536 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1537 struct fc_lport *lport = ctlr->lp;
1538 struct fcoe_port *port = lport_priv(lport);
1539 struct bnx2fc_hba *hba = interface->hba;
1540
1541 /* Stop the transmit retry timer */
1542 del_timer_sync(&port->timer);
1543
1544 /* Free existing transmit skbs */
1545 fcoe_clean_pending_queue(lport);
1546
1547 bnx2fc_net_cleanup(interface);
1548
1549 bnx2fc_free_vport(hba, lport);
1550 }
1551
1552 static void bnx2fc_if_destroy(struct fc_lport *lport)
1553 {
1554
1555 /* Free queued packets for the receive thread */
1556 bnx2fc_clean_rx_queue(lport);
1557
1558 /* Detach from scsi-ml */
1559 fc_remove_host(lport->host);
1560 scsi_remove_host(lport->host);
1561
1562 /*
1563 * Note that only the physical lport will have the exchange manager.
1564 * for vports, this function is NOP
1565 */
1566 fc_exch_mgr_free(lport);
1567
1568 /* Free memory used by statistical counters */
1569 fc_lport_free_stats(lport);
1570
1571 /* Release Scsi_Host */
1572 scsi_host_put(lport->host);
1573 }
1574
1575 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1576 {
1577 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1578 struct fc_lport *lport = ctlr->lp;
1579 struct fcoe_port *port = lport_priv(lport);
1580
1581 bnx2fc_interface_cleanup(interface);
1582 bnx2fc_stop(interface);
1583 list_del(&interface->list);
1584 bnx2fc_interface_put(interface);
1585 queue_work(bnx2fc_wq, &port->destroy_work);
1586 }
1587
1588 /**
1589 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1590 *
1591 * @buffer: The name of the Ethernet interface to be destroyed
1592 * @kp: The associated kernel parameter
1593 *
1594 * Called from sysfs.
1595 *
1596 * Returns: 0 for success
1597 */
1598 static int bnx2fc_destroy(struct net_device *netdev)
1599 {
1600 struct bnx2fc_interface *interface = NULL;
1601 struct workqueue_struct *timer_work_queue;
1602 struct fcoe_ctlr *ctlr;
1603 int rc = 0;
1604
1605 rtnl_lock();
1606 mutex_lock(&bnx2fc_dev_lock);
1607
1608 interface = bnx2fc_interface_lookup(netdev);
1609 ctlr = bnx2fc_to_ctlr(interface);
1610 if (!interface || !ctlr->lp) {
1611 rc = -ENODEV;
1612 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1613 goto netdev_err;
1614 }
1615
1616 timer_work_queue = interface->timer_work_queue;
1617 __bnx2fc_destroy(interface);
1618 destroy_workqueue(timer_work_queue);
1619
1620 netdev_err:
1621 mutex_unlock(&bnx2fc_dev_lock);
1622 rtnl_unlock();
1623 return rc;
1624 }
1625
1626 static void bnx2fc_destroy_work(struct work_struct *work)
1627 {
1628 struct fcoe_port *port;
1629 struct fc_lport *lport;
1630
1631 port = container_of(work, struct fcoe_port, destroy_work);
1632 lport = port->lport;
1633
1634 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1635
1636 bnx2fc_if_destroy(lport);
1637 }
1638
1639 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1640 {
1641 bnx2fc_free_fw_resc(hba);
1642 bnx2fc_free_task_ctx(hba);
1643 }
1644
1645 /**
1646 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1647 * pci structure
1648 *
1649 * @hba: Adapter instance
1650 */
1651 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1652 {
1653 if (bnx2fc_setup_task_ctx(hba))
1654 goto mem_err;
1655
1656 if (bnx2fc_setup_fw_resc(hba))
1657 goto mem_err;
1658
1659 return 0;
1660 mem_err:
1661 bnx2fc_unbind_adapter_devices(hba);
1662 return -ENOMEM;
1663 }
1664
1665 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1666 {
1667 struct cnic_dev *cnic;
1668 struct pci_dev *pdev;
1669
1670 if (!hba->cnic) {
1671 printk(KERN_ERR PFX "cnic is NULL\n");
1672 return -ENODEV;
1673 }
1674 cnic = hba->cnic;
1675 pdev = hba->pcidev = cnic->pcidev;
1676 if (!hba->pcidev)
1677 return -ENODEV;
1678
1679 switch (pdev->device) {
1680 case PCI_DEVICE_ID_NX2_57710:
1681 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1682 break;
1683 case PCI_DEVICE_ID_NX2_57711:
1684 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1685 break;
1686 case PCI_DEVICE_ID_NX2_57712:
1687 case PCI_DEVICE_ID_NX2_57712_MF:
1688 case PCI_DEVICE_ID_NX2_57712_VF:
1689 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1690 break;
1691 case PCI_DEVICE_ID_NX2_57800:
1692 case PCI_DEVICE_ID_NX2_57800_MF:
1693 case PCI_DEVICE_ID_NX2_57800_VF:
1694 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1695 break;
1696 case PCI_DEVICE_ID_NX2_57810:
1697 case PCI_DEVICE_ID_NX2_57810_MF:
1698 case PCI_DEVICE_ID_NX2_57810_VF:
1699 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1700 break;
1701 case PCI_DEVICE_ID_NX2_57840:
1702 case PCI_DEVICE_ID_NX2_57840_MF:
1703 case PCI_DEVICE_ID_NX2_57840_VF:
1704 case PCI_DEVICE_ID_NX2_57840_2_20:
1705 case PCI_DEVICE_ID_NX2_57840_4_10:
1706 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1707 break;
1708 default:
1709 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1710 break;
1711 }
1712 pci_dev_get(hba->pcidev);
1713 return 0;
1714 }
1715
1716 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1717 {
1718 if (hba->pcidev) {
1719 hba->chip_num[0] = '\0';
1720 pci_dev_put(hba->pcidev);
1721 }
1722 hba->pcidev = NULL;
1723 }
1724
1725 /**
1726 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1727 *
1728 * @handle: transport handle pointing to adapter struture
1729 */
1730 static int bnx2fc_ulp_get_stats(void *handle)
1731 {
1732 struct bnx2fc_hba *hba = handle;
1733 struct cnic_dev *cnic;
1734 struct fcoe_stats_info *stats_addr;
1735
1736 if (!hba)
1737 return -EINVAL;
1738
1739 cnic = hba->cnic;
1740 stats_addr = &cnic->stats_addr->fcoe_stat;
1741 if (!stats_addr)
1742 return -EINVAL;
1743
1744 strncpy(stats_addr->version, BNX2FC_VERSION,
1745 sizeof(stats_addr->version));
1746 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1747 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1748
1749 return 0;
1750 }
1751
1752
1753 /**
1754 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1755 *
1756 * @handle: transport handle pointing to adapter structure
1757 *
1758 * This function maps adapter structure to pcidev structure and initiates
1759 * firmware handshake to enable/initialize on-chip FCoE components.
1760 * This bnx2fc - cnic interface api callback is used after following
1761 * conditions are met -
1762 * a) underlying network interface is up (marked by event NETDEV_UP
1763 * from netdev
1764 * b) bnx2fc adatper structure is registered.
1765 */
1766 static void bnx2fc_ulp_start(void *handle)
1767 {
1768 struct bnx2fc_hba *hba = handle;
1769 struct bnx2fc_interface *interface;
1770 struct fcoe_ctlr *ctlr;
1771 struct fc_lport *lport;
1772
1773 mutex_lock(&bnx2fc_dev_lock);
1774
1775 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1776 bnx2fc_fw_init(hba);
1777
1778 BNX2FC_MISC_DBG("bnx2fc started.\n");
1779
1780 list_for_each_entry(interface, &if_list, list) {
1781 if (interface->hba == hba) {
1782 ctlr = bnx2fc_to_ctlr(interface);
1783 lport = ctlr->lp;
1784 /* Kick off Fabric discovery*/
1785 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1786 lport->tt.frame_send = bnx2fc_xmit;
1787 bnx2fc_start_disc(interface);
1788 }
1789 }
1790
1791 mutex_unlock(&bnx2fc_dev_lock);
1792 }
1793
1794 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1795 {
1796 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1797 fc_fabric_logoff(lport);
1798 fc_lport_destroy(lport);
1799 }
1800
1801 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1802 {
1803 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1804 struct fc_lport *lport;
1805 struct fc_lport *vport;
1806
1807 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1808 return;
1809
1810 lport = ctlr->lp;
1811 bnx2fc_port_shutdown(lport);
1812
1813 mutex_lock(&lport->lp_mutex);
1814 list_for_each_entry(vport, &lport->vports, list)
1815 fc_host_port_type(vport->host) =
1816 FC_PORTTYPE_UNKNOWN;
1817 mutex_unlock(&lport->lp_mutex);
1818 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1819 fcoe_ctlr_link_down(ctlr);
1820 fcoe_clean_pending_queue(lport);
1821 }
1822
1823 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1824 {
1825 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1826 int rc = -1;
1827 int i = HZ;
1828
1829 rc = bnx2fc_bind_adapter_devices(hba);
1830 if (rc) {
1831 printk(KERN_ALERT PFX
1832 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1833 goto err_out;
1834 }
1835
1836 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1837 if (rc) {
1838 printk(KERN_ALERT PFX
1839 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1840 goto err_unbind;
1841 }
1842
1843 /*
1844 * Wait until the adapter init message is complete, and adapter
1845 * state is UP.
1846 */
1847 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1848 msleep(BNX2FC_INIT_POLL_TIME);
1849
1850 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1851 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1852 "Ignoring...\n",
1853 hba->cnic->netdev->name);
1854 rc = -1;
1855 goto err_unbind;
1856 }
1857
1858
1859 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1860 return 0;
1861
1862 err_unbind:
1863 bnx2fc_unbind_adapter_devices(hba);
1864 err_out:
1865 return rc;
1866 }
1867
1868 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1869 {
1870 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1871 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1872 init_timer(&hba->destroy_timer);
1873 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1874 jiffies;
1875 hba->destroy_timer.function = bnx2fc_destroy_timer;
1876 hba->destroy_timer.data = (unsigned long)hba;
1877 add_timer(&hba->destroy_timer);
1878 wait_event_interruptible(hba->destroy_wait,
1879 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1880 &hba->flags));
1881 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1882 /* This should never happen */
1883 if (signal_pending(current))
1884 flush_signals(current);
1885
1886 del_timer_sync(&hba->destroy_timer);
1887 }
1888 bnx2fc_unbind_adapter_devices(hba);
1889 }
1890 }
1891
1892 /**
1893 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1894 *
1895 * @handle: transport handle pointing to adapter structure
1896 *
1897 * Driver checks if adapter is already in shutdown mode, if not start
1898 * the shutdown process.
1899 */
1900 static void bnx2fc_ulp_stop(void *handle)
1901 {
1902 struct bnx2fc_hba *hba = handle;
1903 struct bnx2fc_interface *interface;
1904
1905 printk(KERN_ERR "ULP_STOP\n");
1906
1907 mutex_lock(&bnx2fc_dev_lock);
1908 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1909 goto exit;
1910 list_for_each_entry(interface, &if_list, list) {
1911 if (interface->hba == hba)
1912 bnx2fc_stop(interface);
1913 }
1914 BUG_ON(hba->num_ofld_sess != 0);
1915
1916 mutex_lock(&hba->hba_mutex);
1917 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1918 clear_bit(ADAPTER_STATE_GOING_DOWN,
1919 &hba->adapter_state);
1920
1921 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1922 mutex_unlock(&hba->hba_mutex);
1923
1924 bnx2fc_fw_destroy(hba);
1925 exit:
1926 mutex_unlock(&bnx2fc_dev_lock);
1927 }
1928
1929 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1930 {
1931 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1932 struct fc_lport *lport;
1933 int wait_cnt = 0;
1934
1935 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1936 /* Kick off FIP/FLOGI */
1937 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1938 printk(KERN_ERR PFX "Init not done yet\n");
1939 return;
1940 }
1941
1942 lport = ctlr->lp;
1943 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1944
1945 if (!bnx2fc_link_ok(lport) && interface->enabled) {
1946 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1947 fcoe_ctlr_link_up(ctlr);
1948 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1949 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1950 }
1951
1952 /* wait for the FCF to be selected before issuing FLOGI */
1953 while (!ctlr->sel_fcf) {
1954 msleep(250);
1955 /* give up after 3 secs */
1956 if (++wait_cnt > 12)
1957 break;
1958 }
1959
1960 /* Reset max receive frame size to default */
1961 if (fc_set_mfs(lport, BNX2FC_MFS))
1962 return;
1963
1964 fc_lport_init(lport);
1965 fc_fabric_login(lport);
1966 }
1967
1968
1969 /**
1970 * bnx2fc_ulp_init - Initialize an adapter instance
1971 *
1972 * @dev : cnic device handle
1973 * Called from cnic_register_driver() context to initialize all
1974 * enumerated cnic devices. This routine allocates adapter structure
1975 * and other device specific resources.
1976 */
1977 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1978 {
1979 struct bnx2fc_hba *hba;
1980 int rc = 0;
1981
1982 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1983 /* bnx2fc works only when bnx2x is loaded */
1984 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1985 (dev->max_fcoe_conn == 0)) {
1986 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1987 " flags: %lx fcoe_conn: %d\n",
1988 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1989 return;
1990 }
1991
1992 hba = bnx2fc_hba_create(dev);
1993 if (!hba) {
1994 printk(KERN_ERR PFX "hba initialization failed\n");
1995 return;
1996 }
1997
1998 /* Add HBA to the adapter list */
1999 mutex_lock(&bnx2fc_dev_lock);
2000 list_add_tail(&hba->list, &adapter_list);
2001 adapter_count++;
2002 mutex_unlock(&bnx2fc_dev_lock);
2003
2004 dev->fcoe_cap = &hba->fcoe_cap;
2005 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2006 rc = dev->register_device(dev, CNIC_ULP_FCOE,
2007 (void *) hba);
2008 if (rc)
2009 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2010 else
2011 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2012 }
2013
2014 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2015 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2016 {
2017 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2018
2019 if (interface->enabled == true) {
2020 if (!ctlr->lp) {
2021 pr_err(PFX "__bnx2fc_disable: lport not found\n");
2022 return -ENODEV;
2023 } else {
2024 interface->enabled = false;
2025 fcoe_ctlr_link_down(ctlr);
2026 fcoe_clean_pending_queue(ctlr->lp);
2027 }
2028 }
2029 return 0;
2030 }
2031
2032 /**
2033 * Deperecated: Use bnx2fc_enabled()
2034 */
2035 static int bnx2fc_disable(struct net_device *netdev)
2036 {
2037 struct bnx2fc_interface *interface;
2038 struct fcoe_ctlr *ctlr;
2039 int rc = 0;
2040
2041 rtnl_lock();
2042 mutex_lock(&bnx2fc_dev_lock);
2043
2044 interface = bnx2fc_interface_lookup(netdev);
2045 ctlr = bnx2fc_to_ctlr(interface);
2046
2047 if (!interface) {
2048 rc = -ENODEV;
2049 pr_err(PFX "bnx2fc_disable: interface not found\n");
2050 } else {
2051 rc = __bnx2fc_disable(ctlr);
2052 }
2053 mutex_unlock(&bnx2fc_dev_lock);
2054 rtnl_unlock();
2055 return rc;
2056 }
2057
2058 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2059 {
2060 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2061
2062 if (interface->enabled == false) {
2063 if (!ctlr->lp) {
2064 pr_err(PFX "__bnx2fc_enable: lport not found\n");
2065 return -ENODEV;
2066 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2067 fcoe_ctlr_link_up(ctlr);
2068 interface->enabled = true;
2069 }
2070 }
2071 return 0;
2072 }
2073
2074 /**
2075 * Deprecated: Use bnx2fc_enabled()
2076 */
2077 static int bnx2fc_enable(struct net_device *netdev)
2078 {
2079 struct bnx2fc_interface *interface;
2080 struct fcoe_ctlr *ctlr;
2081 int rc = 0;
2082
2083 rtnl_lock();
2084 mutex_lock(&bnx2fc_dev_lock);
2085
2086 interface = bnx2fc_interface_lookup(netdev);
2087 ctlr = bnx2fc_to_ctlr(interface);
2088 if (!interface) {
2089 rc = -ENODEV;
2090 pr_err(PFX "bnx2fc_enable: interface not found\n");
2091 } else {
2092 rc = __bnx2fc_enable(ctlr);
2093 }
2094
2095 mutex_unlock(&bnx2fc_dev_lock);
2096 rtnl_unlock();
2097 return rc;
2098 }
2099
2100 /**
2101 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2102 * @cdev: The FCoE Controller that is being enabled or disabled
2103 *
2104 * fcoe_sysfs will ensure that the state of 'enabled' has
2105 * changed, so no checking is necessary here. This routine simply
2106 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2107 * When those routines are removed the functionality can be merged
2108 * here.
2109 */
2110 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2111 {
2112 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2113
2114 switch (cdev->enabled) {
2115 case FCOE_CTLR_ENABLED:
2116 return __bnx2fc_enable(ctlr);
2117 case FCOE_CTLR_DISABLED:
2118 return __bnx2fc_disable(ctlr);
2119 case FCOE_CTLR_UNUSED:
2120 default:
2121 return -ENOTSUPP;
2122 };
2123 }
2124
2125 enum bnx2fc_create_link_state {
2126 BNX2FC_CREATE_LINK_DOWN,
2127 BNX2FC_CREATE_LINK_UP,
2128 };
2129
2130 /**
2131 * _bnx2fc_create() - Create bnx2fc FCoE interface
2132 * @netdev : The net_device object the Ethernet interface to create on
2133 * @fip_mode: The FIP mode for this creation
2134 * @link_state: The ctlr link state on creation
2135 *
2136 * Called from either the libfcoe 'create' module parameter
2137 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2138 *
2139 * libfcoe's 'create' module parameter is deprecated so some
2140 * consolidation of code can be done when that interface is
2141 * removed.
2142 *
2143 * Returns: 0 for success
2144 */
2145 static int _bnx2fc_create(struct net_device *netdev,
2146 enum fip_state fip_mode,
2147 enum bnx2fc_create_link_state link_state)
2148 {
2149 struct fcoe_ctlr_device *cdev;
2150 struct fcoe_ctlr *ctlr;
2151 struct bnx2fc_interface *interface;
2152 struct bnx2fc_hba *hba;
2153 struct net_device *phys_dev = netdev;
2154 struct fc_lport *lport;
2155 struct ethtool_drvinfo drvinfo;
2156 int rc = 0;
2157 int vlan_id = 0;
2158
2159 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2160 if (fip_mode != FIP_MODE_FABRIC) {
2161 printk(KERN_ERR "fip mode not FABRIC\n");
2162 return -EIO;
2163 }
2164
2165 rtnl_lock();
2166
2167 mutex_lock(&bnx2fc_dev_lock);
2168
2169 if (!try_module_get(THIS_MODULE)) {
2170 rc = -EINVAL;
2171 goto mod_err;
2172 }
2173
2174 /* obtain physical netdev */
2175 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2176 phys_dev = vlan_dev_real_dev(netdev);
2177
2178 /* verify if the physical device is a netxtreme2 device */
2179 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2180 memset(&drvinfo, 0, sizeof(drvinfo));
2181 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2182 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2183 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2184 rc = -EINVAL;
2185 goto netdev_err;
2186 }
2187 } else {
2188 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2189 rc = -EINVAL;
2190 goto netdev_err;
2191 }
2192
2193 /* obtain interface and initialize rest of the structure */
2194 hba = bnx2fc_hba_lookup(phys_dev);
2195 if (!hba) {
2196 rc = -ENODEV;
2197 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2198 goto netdev_err;
2199 }
2200
2201 if (bnx2fc_interface_lookup(netdev)) {
2202 rc = -EEXIST;
2203 goto netdev_err;
2204 }
2205
2206 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2207 if (!interface) {
2208 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2209 goto ifput_err;
2210 }
2211
2212 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2213 vlan_id = vlan_dev_vlan_id(netdev);
2214 interface->vlan_enabled = 1;
2215 }
2216
2217 ctlr = bnx2fc_to_ctlr(interface);
2218 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2219 interface->vlan_id = vlan_id;
2220
2221 interface->timer_work_queue =
2222 create_singlethread_workqueue("bnx2fc_timer_wq");
2223 if (!interface->timer_work_queue) {
2224 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2225 rc = -EINVAL;
2226 goto ifput_err;
2227 }
2228
2229 lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2230 if (!lport) {
2231 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2232 netdev->name);
2233 rc = -EINVAL;
2234 goto if_create_err;
2235 }
2236
2237 /* Add interface to if_list */
2238 list_add_tail(&interface->list, &if_list);
2239
2240 lport->boot_time = jiffies;
2241
2242 /* Make this master N_port */
2243 ctlr->lp = lport;
2244
2245 if (link_state == BNX2FC_CREATE_LINK_UP)
2246 cdev->enabled = FCOE_CTLR_ENABLED;
2247 else
2248 cdev->enabled = FCOE_CTLR_DISABLED;
2249
2250 if (link_state == BNX2FC_CREATE_LINK_UP &&
2251 !bnx2fc_link_ok(lport)) {
2252 fcoe_ctlr_link_up(ctlr);
2253 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2254 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2255 }
2256
2257 BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2258 bnx2fc_start_disc(interface);
2259
2260 if (link_state == BNX2FC_CREATE_LINK_UP)
2261 interface->enabled = true;
2262
2263 /*
2264 * Release from kref_init in bnx2fc_interface_setup, on success
2265 * lport should be holding a reference taken in bnx2fc_if_create
2266 */
2267 bnx2fc_interface_put(interface);
2268 /* put netdev that was held while calling dev_get_by_name */
2269 mutex_unlock(&bnx2fc_dev_lock);
2270 rtnl_unlock();
2271 return 0;
2272
2273 if_create_err:
2274 destroy_workqueue(interface->timer_work_queue);
2275 ifput_err:
2276 bnx2fc_net_cleanup(interface);
2277 bnx2fc_interface_put(interface);
2278 goto mod_err;
2279 netdev_err:
2280 module_put(THIS_MODULE);
2281 mod_err:
2282 mutex_unlock(&bnx2fc_dev_lock);
2283 rtnl_unlock();
2284 return rc;
2285 }
2286
2287 /**
2288 * bnx2fc_create() - Create a bnx2fc interface
2289 * @netdev : The net_device object the Ethernet interface to create on
2290 * @fip_mode: The FIP mode for this creation
2291 *
2292 * Called from fcoe transport
2293 *
2294 * Returns: 0 for success
2295 */
2296 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2297 {
2298 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2299 }
2300
2301 /**
2302 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2303 * @netdev: The net_device to be used by the allocated FCoE Controller
2304 *
2305 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2306 * in a link_down state. The allows the user an opportunity to configure
2307 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2308 *
2309 * Creating in with this routine starts the FCoE Controller in Fabric
2310 * mode. The user can change to VN2VN or another mode before enabling.
2311 */
2312 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2313 {
2314 return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2315 BNX2FC_CREATE_LINK_DOWN);
2316 }
2317
2318 /**
2319 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2320 *
2321 * @cnic: Pointer to cnic device instance
2322 *
2323 **/
2324 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2325 {
2326 struct bnx2fc_hba *hba;
2327
2328 /* Called with bnx2fc_dev_lock held */
2329 list_for_each_entry(hba, &adapter_list, list) {
2330 if (hba->cnic == cnic)
2331 return hba;
2332 }
2333 return NULL;
2334 }
2335
2336 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2337 *netdev)
2338 {
2339 struct bnx2fc_interface *interface;
2340
2341 /* Called with bnx2fc_dev_lock held */
2342 list_for_each_entry(interface, &if_list, list) {
2343 if (interface->netdev == netdev)
2344 return interface;
2345 }
2346 return NULL;
2347 }
2348
2349 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2350 *phys_dev)
2351 {
2352 struct bnx2fc_hba *hba;
2353
2354 /* Called with bnx2fc_dev_lock held */
2355 list_for_each_entry(hba, &adapter_list, list) {
2356 if (hba->phys_dev == phys_dev)
2357 return hba;
2358 }
2359 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2360 return NULL;
2361 }
2362
2363 /**
2364 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2365 *
2366 * @dev cnic device handle
2367 */
2368 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2369 {
2370 struct bnx2fc_hba *hba;
2371 struct bnx2fc_interface *interface, *tmp;
2372
2373 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2374
2375 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2376 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2377 dev->netdev->name, dev->flags);
2378 return;
2379 }
2380
2381 mutex_lock(&bnx2fc_dev_lock);
2382 hba = bnx2fc_find_hba_for_cnic(dev);
2383 if (!hba) {
2384 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2385 dev);
2386 mutex_unlock(&bnx2fc_dev_lock);
2387 return;
2388 }
2389
2390 list_del_init(&hba->list);
2391 adapter_count--;
2392
2393 list_for_each_entry_safe(interface, tmp, &if_list, list)
2394 /* destroy not called yet, move to quiesced list */
2395 if (interface->hba == hba)
2396 __bnx2fc_destroy(interface);
2397 mutex_unlock(&bnx2fc_dev_lock);
2398
2399 bnx2fc_ulp_stop(hba);
2400 /* unregister cnic device */
2401 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2402 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2403 bnx2fc_hba_destroy(hba);
2404 }
2405
2406 /**
2407 * bnx2fc_fcoe_reset - Resets the fcoe
2408 *
2409 * @shost: shost the reset is from
2410 *
2411 * Returns: always 0
2412 */
2413 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2414 {
2415 struct fc_lport *lport = shost_priv(shost);
2416 fc_lport_reset(lport);
2417 return 0;
2418 }
2419
2420
2421 static bool bnx2fc_match(struct net_device *netdev)
2422 {
2423 struct net_device *phys_dev = netdev;
2424
2425 mutex_lock(&bnx2fc_dev_lock);
2426 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2427 phys_dev = vlan_dev_real_dev(netdev);
2428
2429 if (bnx2fc_hba_lookup(phys_dev)) {
2430 mutex_unlock(&bnx2fc_dev_lock);
2431 return true;
2432 }
2433
2434 mutex_unlock(&bnx2fc_dev_lock);
2435 return false;
2436 }
2437
2438
2439 static struct fcoe_transport bnx2fc_transport = {
2440 .name = {"bnx2fc"},
2441 .attached = false,
2442 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2443 .alloc = bnx2fc_ctlr_alloc,
2444 .match = bnx2fc_match,
2445 .create = bnx2fc_create,
2446 .destroy = bnx2fc_destroy,
2447 .enable = bnx2fc_enable,
2448 .disable = bnx2fc_disable,
2449 };
2450
2451 /**
2452 * bnx2fc_percpu_thread_create - Create a receive thread for an
2453 * online CPU
2454 *
2455 * @cpu: cpu index for the online cpu
2456 */
2457 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2458 {
2459 struct bnx2fc_percpu_s *p;
2460 struct task_struct *thread;
2461
2462 p = &per_cpu(bnx2fc_percpu, cpu);
2463
2464 thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2465 (void *)p, cpu_to_node(cpu),
2466 "bnx2fc_thread/%d", cpu);
2467 /* bind thread to the cpu */
2468 if (likely(!IS_ERR(thread))) {
2469 kthread_bind(thread, cpu);
2470 p->iothread = thread;
2471 wake_up_process(thread);
2472 }
2473 }
2474
2475 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2476 {
2477 struct bnx2fc_percpu_s *p;
2478 struct task_struct *thread;
2479 struct bnx2fc_work *work, *tmp;
2480
2481 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2482
2483 /* Prevent any new work from being queued for this CPU */
2484 p = &per_cpu(bnx2fc_percpu, cpu);
2485 spin_lock_bh(&p->fp_work_lock);
2486 thread = p->iothread;
2487 p->iothread = NULL;
2488
2489
2490 /* Free all work in the list */
2491 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2492 list_del_init(&work->list);
2493 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2494 kfree(work);
2495 }
2496
2497 spin_unlock_bh(&p->fp_work_lock);
2498
2499 if (thread)
2500 kthread_stop(thread);
2501 }
2502
2503 /**
2504 * bnx2fc_cpu_callback - Handler for CPU hotplug events
2505 *
2506 * @nfb: The callback data block
2507 * @action: The event triggering the callback
2508 * @hcpu: The index of the CPU that the event is for
2509 *
2510 * This creates or destroys per-CPU data for fcoe
2511 *
2512 * Returns NOTIFY_OK always.
2513 */
2514 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2515 unsigned long action, void *hcpu)
2516 {
2517 unsigned cpu = (unsigned long)hcpu;
2518
2519 switch (action) {
2520 case CPU_ONLINE:
2521 case CPU_ONLINE_FROZEN:
2522 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2523 bnx2fc_percpu_thread_create(cpu);
2524 break;
2525 case CPU_DEAD:
2526 case CPU_DEAD_FROZEN:
2527 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2528 bnx2fc_percpu_thread_destroy(cpu);
2529 break;
2530 default:
2531 break;
2532 }
2533 return NOTIFY_OK;
2534 }
2535
2536 /**
2537 * bnx2fc_mod_init - module init entry point
2538 *
2539 * Initialize driver wide global data structures, and register
2540 * with cnic module
2541 **/
2542 static int __init bnx2fc_mod_init(void)
2543 {
2544 struct fcoe_percpu_s *bg;
2545 struct task_struct *l2_thread;
2546 int rc = 0;
2547 unsigned int cpu = 0;
2548 struct bnx2fc_percpu_s *p;
2549
2550 printk(KERN_INFO PFX "%s", version);
2551
2552 /* register as a fcoe transport */
2553 rc = fcoe_transport_attach(&bnx2fc_transport);
2554 if (rc) {
2555 printk(KERN_ERR "failed to register an fcoe transport, check "
2556 "if libfcoe is loaded\n");
2557 goto out;
2558 }
2559
2560 INIT_LIST_HEAD(&adapter_list);
2561 INIT_LIST_HEAD(&if_list);
2562 mutex_init(&bnx2fc_dev_lock);
2563 adapter_count = 0;
2564
2565 /* Attach FC transport template */
2566 rc = bnx2fc_attach_transport();
2567 if (rc)
2568 goto detach_ft;
2569
2570 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2571 if (!bnx2fc_wq) {
2572 rc = -ENOMEM;
2573 goto release_bt;
2574 }
2575
2576 bg = &bnx2fc_global;
2577 skb_queue_head_init(&bg->fcoe_rx_list);
2578 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2579 (void *)bg,
2580 "bnx2fc_l2_thread");
2581 if (IS_ERR(l2_thread)) {
2582 rc = PTR_ERR(l2_thread);
2583 goto free_wq;
2584 }
2585 wake_up_process(l2_thread);
2586 spin_lock_bh(&bg->fcoe_rx_list.lock);
2587 bg->thread = l2_thread;
2588 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2589
2590 for_each_possible_cpu(cpu) {
2591 p = &per_cpu(bnx2fc_percpu, cpu);
2592 INIT_LIST_HEAD(&p->work_list);
2593 spin_lock_init(&p->fp_work_lock);
2594 }
2595
2596 for_each_online_cpu(cpu) {
2597 bnx2fc_percpu_thread_create(cpu);
2598 }
2599
2600 /* Initialize per CPU interrupt thread */
2601 register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2602
2603 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2604
2605 return 0;
2606
2607 free_wq:
2608 destroy_workqueue(bnx2fc_wq);
2609 release_bt:
2610 bnx2fc_release_transport();
2611 detach_ft:
2612 fcoe_transport_detach(&bnx2fc_transport);
2613 out:
2614 return rc;
2615 }
2616
2617 static void __exit bnx2fc_mod_exit(void)
2618 {
2619 LIST_HEAD(to_be_deleted);
2620 struct bnx2fc_hba *hba, *next;
2621 struct fcoe_percpu_s *bg;
2622 struct task_struct *l2_thread;
2623 struct sk_buff *skb;
2624 unsigned int cpu = 0;
2625
2626 /*
2627 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2628 * it will have higher precedence than bnx2fc_dev_lock.
2629 * unregister_device() cannot be called with bnx2fc_dev_lock
2630 * held.
2631 */
2632 mutex_lock(&bnx2fc_dev_lock);
2633 list_splice(&adapter_list, &to_be_deleted);
2634 INIT_LIST_HEAD(&adapter_list);
2635 adapter_count = 0;
2636 mutex_unlock(&bnx2fc_dev_lock);
2637
2638 /* Unregister with cnic */
2639 list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2640 list_del_init(&hba->list);
2641 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2642 hba);
2643 bnx2fc_ulp_stop(hba);
2644 /* unregister cnic device */
2645 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2646 &hba->reg_with_cnic))
2647 hba->cnic->unregister_device(hba->cnic,
2648 CNIC_ULP_FCOE);
2649 bnx2fc_hba_destroy(hba);
2650 }
2651 cnic_unregister_driver(CNIC_ULP_FCOE);
2652
2653 /* Destroy global thread */
2654 bg = &bnx2fc_global;
2655 spin_lock_bh(&bg->fcoe_rx_list.lock);
2656 l2_thread = bg->thread;
2657 bg->thread = NULL;
2658 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2659 kfree_skb(skb);
2660
2661 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2662
2663 if (l2_thread)
2664 kthread_stop(l2_thread);
2665
2666 unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2667
2668 /* Destroy per cpu threads */
2669 for_each_online_cpu(cpu) {
2670 bnx2fc_percpu_thread_destroy(cpu);
2671 }
2672
2673 destroy_workqueue(bnx2fc_wq);
2674 /*
2675 * detach from scsi transport
2676 * must happen after all destroys are done
2677 */
2678 bnx2fc_release_transport();
2679
2680 /* detach from fcoe transport */
2681 fcoe_transport_detach(&bnx2fc_transport);
2682 }
2683
2684 module_init(bnx2fc_mod_init);
2685 module_exit(bnx2fc_mod_exit);
2686
2687 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2688 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2689 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2690 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2691 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2692 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2693 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2694 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2695
2696 .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2697 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2698 };
2699
2700 static struct fc_function_template bnx2fc_transport_function = {
2701 .show_host_node_name = 1,
2702 .show_host_port_name = 1,
2703 .show_host_supported_classes = 1,
2704 .show_host_supported_fc4s = 1,
2705 .show_host_active_fc4s = 1,
2706 .show_host_maxframe_size = 1,
2707
2708 .show_host_port_id = 1,
2709 .show_host_supported_speeds = 1,
2710 .get_host_speed = fc_get_host_speed,
2711 .show_host_speed = 1,
2712 .show_host_port_type = 1,
2713 .get_host_port_state = fc_get_host_port_state,
2714 .show_host_port_state = 1,
2715 .show_host_symbolic_name = 1,
2716
2717 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2718 sizeof(struct bnx2fc_rport)),
2719 .show_rport_maxframe_size = 1,
2720 .show_rport_supported_classes = 1,
2721
2722 .show_host_fabric_name = 1,
2723 .show_starget_node_name = 1,
2724 .show_starget_port_name = 1,
2725 .show_starget_port_id = 1,
2726 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2727 .show_rport_dev_loss_tmo = 1,
2728 .get_fc_host_stats = bnx2fc_get_host_stats,
2729
2730 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2731
2732 .terminate_rport_io = fc_rport_terminate_io,
2733
2734 .vport_create = bnx2fc_vport_create,
2735 .vport_delete = bnx2fc_vport_destroy,
2736 .vport_disable = bnx2fc_vport_disable,
2737 .bsg_request = fc_lport_bsg_request,
2738 };
2739
2740 static struct fc_function_template bnx2fc_vport_xport_function = {
2741 .show_host_node_name = 1,
2742 .show_host_port_name = 1,
2743 .show_host_supported_classes = 1,
2744 .show_host_supported_fc4s = 1,
2745 .show_host_active_fc4s = 1,
2746 .show_host_maxframe_size = 1,
2747
2748 .show_host_port_id = 1,
2749 .show_host_supported_speeds = 1,
2750 .get_host_speed = fc_get_host_speed,
2751 .show_host_speed = 1,
2752 .show_host_port_type = 1,
2753 .get_host_port_state = fc_get_host_port_state,
2754 .show_host_port_state = 1,
2755 .show_host_symbolic_name = 1,
2756
2757 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2758 sizeof(struct bnx2fc_rport)),
2759 .show_rport_maxframe_size = 1,
2760 .show_rport_supported_classes = 1,
2761
2762 .show_host_fabric_name = 1,
2763 .show_starget_node_name = 1,
2764 .show_starget_port_name = 1,
2765 .show_starget_port_id = 1,
2766 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2767 .show_rport_dev_loss_tmo = 1,
2768 .get_fc_host_stats = fc_get_host_stats,
2769 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2770 .terminate_rport_io = fc_rport_terminate_io,
2771 .bsg_request = fc_lport_bsg_request,
2772 };
2773
2774 /**
2775 * scsi_host_template structure used while registering with SCSI-ml
2776 */
2777 static struct scsi_host_template bnx2fc_shost_template = {
2778 .module = THIS_MODULE,
2779 .name = "Broadcom Offload FCoE Initiator",
2780 .queuecommand = bnx2fc_queuecommand,
2781 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2782 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2783 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2784 .eh_host_reset_handler = fc_eh_host_reset,
2785 .slave_alloc = fc_slave_alloc,
2786 .change_queue_depth = fc_change_queue_depth,
2787 .change_queue_type = fc_change_queue_type,
2788 .this_id = -1,
2789 .cmd_per_lun = 3,
2790 .use_clustering = ENABLE_CLUSTERING,
2791 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2792 .max_sectors = 1024,
2793 };
2794
2795 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2796 .frame_send = bnx2fc_xmit,
2797 .elsct_send = bnx2fc_elsct_send,
2798 .fcp_abort_io = bnx2fc_abort_io,
2799 .fcp_cleanup = bnx2fc_cleanup,
2800 .get_lesb = fcoe_get_lesb,
2801 .rport_event_callback = bnx2fc_rport_event_handler,
2802 };
2803
2804 /**
2805 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2806 * structure carrying callback function pointers
2807 */
2808 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2809 .owner = THIS_MODULE,
2810 .cnic_init = bnx2fc_ulp_init,
2811 .cnic_exit = bnx2fc_ulp_exit,
2812 .cnic_start = bnx2fc_ulp_start,
2813 .cnic_stop = bnx2fc_ulp_stop,
2814 .indicate_kcqes = bnx2fc_indicate_kcqe,
2815 .indicate_netevent = bnx2fc_indicate_netevent,
2816 .cnic_get_stats = bnx2fc_ulp_get_stats,
2817 };
Linux with added FPC-III support