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dm thin metadata: fix __udivdi3 undefined on 32-bit
[linux/fpc-iii.git] / drivers / scsi / bnx2fc / bnx2fc_fcoe.c
blobd0b227ffbd5fd66bd606d648726bb96b0869033e
1 /* bnx2fc_fcoe.c: QLogic 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 * Copyright (c) 2014-2015 QLogic Corporation
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation.
12 *
13 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
14 */
15
16 #include "bnx2fc.h"
17
18 static struct list_head adapter_list;
19 static struct list_head if_list;
20 static u32 adapter_count;
21 static DEFINE_MUTEX(bnx2fc_dev_lock);
22 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
23
24 #define DRV_MODULE_NAME "bnx2fc"
25 #define DRV_MODULE_VERSION BNX2FC_VERSION
26 #define DRV_MODULE_RELDATE "October 15, 2015"
27
28
29 static char version[] =
30 "QLogic FCoE Driver " DRV_MODULE_NAME \
31 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
32
33
34 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
35 MODULE_DESCRIPTION("QLogic FCoE Driver");
36 MODULE_LICENSE("GPL");
37 MODULE_VERSION(DRV_MODULE_VERSION);
38
39 #define BNX2FC_MAX_QUEUE_DEPTH 256
40 #define BNX2FC_MIN_QUEUE_DEPTH 32
41 #define FCOE_WORD_TO_BYTE 4
42
43 static struct scsi_transport_template *bnx2fc_transport_template;
44 static struct scsi_transport_template *bnx2fc_vport_xport_template;
45
46 struct workqueue_struct *bnx2fc_wq;
47
48 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
49 * Here the io threads are per cpu but the l2 thread is just one
50 */
51 struct fcoe_percpu_s bnx2fc_global;
52 DEFINE_SPINLOCK(bnx2fc_global_lock);
53
54 static struct cnic_ulp_ops bnx2fc_cnic_cb;
55 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
56 static struct scsi_host_template bnx2fc_shost_template;
57 static struct fc_function_template bnx2fc_transport_function;
58 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
59 static struct fc_function_template bnx2fc_vport_xport_function;
60 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
61 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
62 static int bnx2fc_destroy(struct net_device *net_device);
63 static int bnx2fc_enable(struct net_device *netdev);
64 static int bnx2fc_disable(struct net_device *netdev);
65
66 /* fcoe_syfs control interface handlers */
67 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
68 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
69
70 static void bnx2fc_recv_frame(struct sk_buff *skb);
71
72 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
73 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
74 static int bnx2fc_lport_config(struct fc_lport *lport);
75 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
76 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
77 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
78 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
79 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
80 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
81 struct device *parent, int npiv);
82 static void bnx2fc_destroy_work(struct work_struct *work);
83
84 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
85 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
86 *phys_dev);
87 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
88 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
89
90 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
91 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
92
93 static void bnx2fc_port_shutdown(struct fc_lport *lport);
94 static void bnx2fc_stop(struct bnx2fc_interface *interface);
95 static int __init bnx2fc_mod_init(void);
96 static void __exit bnx2fc_mod_exit(void);
97
98 unsigned int bnx2fc_debug_level;
99 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
100
101 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
102 unsigned long action, void *hcpu);
103 /* notification function for CPU hotplug events */
104 static struct notifier_block bnx2fc_cpu_notifier = {
105 .notifier_call = bnx2fc_cpu_callback,
106 };
107
108 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
109 {
110 return ((struct bnx2fc_interface *)
111 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
112 }
113
114 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
115 {
116 struct fcoe_ctlr_device *ctlr_dev =
117 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
118 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
119 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
120
121 fcf_dev->vlan_id = fcoe->vlan_id;
122 }
123
124 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
125 {
126 struct fcoe_percpu_s *bg;
127 struct fcoe_rcv_info *fr;
128 struct sk_buff_head *list;
129 struct sk_buff *skb, *next;
130 struct sk_buff *head;
131
132 bg = &bnx2fc_global;
133 spin_lock_bh(&bg->fcoe_rx_list.lock);
134 list = &bg->fcoe_rx_list;
135 head = list->next;
136 for (skb = head; skb != (struct sk_buff *)list;
137 skb = next) {
138 next = skb->next;
139 fr = fcoe_dev_from_skb(skb);
140 if (fr->fr_dev == lp) {
141 __skb_unlink(skb, list);
142 kfree_skb(skb);
143 }
144 }
145 spin_unlock_bh(&bg->fcoe_rx_list.lock);
146 }
147
148 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
149 {
150 int rc;
151 spin_lock(&bnx2fc_global_lock);
152 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
153 spin_unlock(&bnx2fc_global_lock);
154
155 return rc;
156 }
157
158 static void bnx2fc_abort_io(struct fc_lport *lport)
159 {
160 /*
161 * This function is no-op for bnx2fc, but we do
162 * not want to leave it as NULL either, as libfc
163 * can call the default function which is
164 * fc_fcp_abort_io.
165 */
166 }
167
168 static void bnx2fc_cleanup(struct fc_lport *lport)
169 {
170 struct fcoe_port *port = lport_priv(lport);
171 struct bnx2fc_interface *interface = port->priv;
172 struct bnx2fc_hba *hba = interface->hba;
173 struct bnx2fc_rport *tgt;
174 int i;
175
176 BNX2FC_MISC_DBG("Entered %s\n", __func__);
177 mutex_lock(&hba->hba_mutex);
178 spin_lock_bh(&hba->hba_lock);
179 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
180 tgt = hba->tgt_ofld_list[i];
181 if (tgt) {
182 /* Cleanup IOs belonging to requested vport */
183 if (tgt->port == port) {
184 spin_unlock_bh(&hba->hba_lock);
185 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
186 bnx2fc_flush_active_ios(tgt);
187 spin_lock_bh(&hba->hba_lock);
188 }
189 }
190 }
191 spin_unlock_bh(&hba->hba_lock);
192 mutex_unlock(&hba->hba_mutex);
193 }
194
195 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
196 struct fc_frame *fp)
197 {
198 struct fc_rport_priv *rdata = tgt->rdata;
199 struct fc_frame_header *fh;
200 int rc = 0;
201
202 fh = fc_frame_header_get(fp);
203 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
204 "r_ctl = 0x%x\n", rdata->ids.port_id,
205 ntohs(fh->fh_ox_id), fh->fh_r_ctl);
206 if ((fh->fh_type == FC_TYPE_ELS) &&
207 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
208
209 switch (fc_frame_payload_op(fp)) {
210 case ELS_ADISC:
211 rc = bnx2fc_send_adisc(tgt, fp);
212 break;
213 case ELS_LOGO:
214 rc = bnx2fc_send_logo(tgt, fp);
215 break;
216 case ELS_RLS:
217 rc = bnx2fc_send_rls(tgt, fp);
218 break;
219 default:
220 break;
221 }
222 } else if ((fh->fh_type == FC_TYPE_BLS) &&
223 (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
224 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
225 else {
226 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
227 "rctl 0x%x thru non-offload path\n",
228 fh->fh_type, fh->fh_r_ctl);
229 return -ENODEV;
230 }
231 if (rc)
232 return -ENOMEM;
233 else
234 return 0;
235 }
236
237 /**
238 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
239 *
240 * @lport: the associated local port
241 * @fp: the fc_frame to be transmitted
242 */
243 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
244 {
245 struct ethhdr *eh;
246 struct fcoe_crc_eof *cp;
247 struct sk_buff *skb;
248 struct fc_frame_header *fh;
249 struct bnx2fc_interface *interface;
250 struct fcoe_ctlr *ctlr;
251 struct bnx2fc_hba *hba;
252 struct fcoe_port *port;
253 struct fcoe_hdr *hp;
254 struct bnx2fc_rport *tgt;
255 struct fc_stats *stats;
256 u8 sof, eof;
257 u32 crc;
258 unsigned int hlen, tlen, elen;
259 int wlen, rc = 0;
260
261 port = (struct fcoe_port *)lport_priv(lport);
262 interface = port->priv;
263 ctlr = bnx2fc_to_ctlr(interface);
264 hba = interface->hba;
265
266 fh = fc_frame_header_get(fp);
267
268 skb = fp_skb(fp);
269 if (!lport->link_up) {
270 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
271 kfree_skb(skb);
272 return 0;
273 }
274
275 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
276 if (!ctlr->sel_fcf) {
277 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
278 kfree_skb(skb);
279 return -EINVAL;
280 }
281 if (fcoe_ctlr_els_send(ctlr, lport, skb))
282 return 0;
283 }
284
285 sof = fr_sof(fp);
286 eof = fr_eof(fp);
287
288 /*
289 * Snoop the frame header to check if the frame is for
290 * an offloaded session
291 */
292 /*
293 * tgt_ofld_list access is synchronized using
294 * both hba mutex and hba lock. Atleast hba mutex or
295 * hba lock needs to be held for read access.
296 */
297
298 spin_lock_bh(&hba->hba_lock);
299 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
300 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
301 /* This frame is for offloaded session */
302 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
303 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
304 spin_unlock_bh(&hba->hba_lock);
305 rc = bnx2fc_xmit_l2_frame(tgt, fp);
306 if (rc != -ENODEV) {
307 kfree_skb(skb);
308 return rc;
309 }
310 } else {
311 spin_unlock_bh(&hba->hba_lock);
312 }
313
314 elen = sizeof(struct ethhdr);
315 hlen = sizeof(struct fcoe_hdr);
316 tlen = sizeof(struct fcoe_crc_eof);
317 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
318
319 skb->ip_summed = CHECKSUM_NONE;
320 crc = fcoe_fc_crc(fp);
321
322 /* copy port crc and eof to the skb buff */
323 if (skb_is_nonlinear(skb)) {
324 skb_frag_t *frag;
325 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
326 kfree_skb(skb);
327 return -ENOMEM;
328 }
329 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
330 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
331 } else {
332 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
333 }
334
335 memset(cp, 0, sizeof(*cp));
336 cp->fcoe_eof = eof;
337 cp->fcoe_crc32 = cpu_to_le32(~crc);
338 if (skb_is_nonlinear(skb)) {
339 kunmap_atomic(cp);
340 cp = NULL;
341 }
342
343 /* adjust skb network/transport offsets to match mac/fcoe/port */
344 skb_push(skb, elen + hlen);
345 skb_reset_mac_header(skb);
346 skb_reset_network_header(skb);
347 skb->mac_len = elen;
348 skb->protocol = htons(ETH_P_FCOE);
349 skb->dev = interface->netdev;
350
351 /* fill up mac and fcoe headers */
352 eh = eth_hdr(skb);
353 eh->h_proto = htons(ETH_P_FCOE);
354 if (ctlr->map_dest)
355 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
356 else
357 /* insert GW address */
358 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
359
360 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
361 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
362 else
363 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
364
365 hp = (struct fcoe_hdr *)(eh + 1);
366 memset(hp, 0, sizeof(*hp));
367 if (FC_FCOE_VER)
368 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
369 hp->fcoe_sof = sof;
370
371 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
372 if (lport->seq_offload && fr_max_payload(fp)) {
373 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
374 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
375 } else {
376 skb_shinfo(skb)->gso_type = 0;
377 skb_shinfo(skb)->gso_size = 0;
378 }
379
380 /*update tx stats */
381 stats = per_cpu_ptr(lport->stats, get_cpu());
382 stats->TxFrames++;
383 stats->TxWords += wlen;
384 put_cpu();
385
386 /* send down to lld */
387 fr_dev(fp) = lport;
388 if (port->fcoe_pending_queue.qlen)
389 fcoe_check_wait_queue(lport, skb);
390 else if (fcoe_start_io(skb))
391 fcoe_check_wait_queue(lport, skb);
392
393 return 0;
394 }
395
396 /**
397 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
398 *
399 * @skb: the receive socket buffer
400 * @dev: associated net device
401 * @ptype: context
402 * @olddev: last device
403 *
404 * This function receives the packet and builds FC frame and passes it up
405 */
406 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
407 struct packet_type *ptype, struct net_device *olddev)
408 {
409 struct fc_lport *lport;
410 struct bnx2fc_interface *interface;
411 struct fcoe_ctlr *ctlr;
412 struct fc_frame_header *fh;
413 struct fcoe_rcv_info *fr;
414 struct fcoe_percpu_s *bg;
415 struct sk_buff *tmp_skb;
416 unsigned short oxid;
417
418 interface = container_of(ptype, struct bnx2fc_interface,
419 fcoe_packet_type);
420 ctlr = bnx2fc_to_ctlr(interface);
421 lport = ctlr->lp;
422
423 if (unlikely(lport == NULL)) {
424 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
425 goto err;
426 }
427
428 tmp_skb = skb_share_check(skb, GFP_ATOMIC);
429 if (!tmp_skb)
430 goto err;
431
432 skb = tmp_skb;
433
434 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
435 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
436 goto err;
437 }
438
439 /*
440 * Check for minimum frame length, and make sure required FCoE
441 * and FC headers are pulled into the linear data area.
442 */
443 if (unlikely((skb->len < FCOE_MIN_FRAME) ||
444 !pskb_may_pull(skb, FCOE_HEADER_LEN)))
445 goto err;
446
447 skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
448 fh = (struct fc_frame_header *) skb_transport_header(skb);
449
450 oxid = ntohs(fh->fh_ox_id);
451
452 fr = fcoe_dev_from_skb(skb);
453 fr->fr_dev = lport;
454
455 bg = &bnx2fc_global;
456 spin_lock(&bg->fcoe_rx_list.lock);
457
458 __skb_queue_tail(&bg->fcoe_rx_list, skb);
459 if (bg->fcoe_rx_list.qlen == 1)
460 wake_up_process(bg->thread);
461
462 spin_unlock(&bg->fcoe_rx_list.lock);
463
464 return 0;
465 err:
466 kfree_skb(skb);
467 return -1;
468 }
469
470 static int bnx2fc_l2_rcv_thread(void *arg)
471 {
472 struct fcoe_percpu_s *bg = arg;
473 struct sk_buff *skb;
474
475 set_user_nice(current, MIN_NICE);
476 set_current_state(TASK_INTERRUPTIBLE);
477 while (!kthread_should_stop()) {
478 schedule();
479 spin_lock_bh(&bg->fcoe_rx_list.lock);
480 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
481 spin_unlock_bh(&bg->fcoe_rx_list.lock);
482 bnx2fc_recv_frame(skb);
483 spin_lock_bh(&bg->fcoe_rx_list.lock);
484 }
485 __set_current_state(TASK_INTERRUPTIBLE);
486 spin_unlock_bh(&bg->fcoe_rx_list.lock);
487 }
488 __set_current_state(TASK_RUNNING);
489 return 0;
490 }
491
492
493 static void bnx2fc_recv_frame(struct sk_buff *skb)
494 {
495 u32 fr_len;
496 struct fc_lport *lport;
497 struct fcoe_rcv_info *fr;
498 struct fc_stats *stats;
499 struct fc_frame_header *fh;
500 struct fcoe_crc_eof crc_eof;
501 struct fc_frame *fp;
502 struct fc_lport *vn_port;
503 struct fcoe_port *port;
504 u8 *mac = NULL;
505 u8 *dest_mac = NULL;
506 struct fcoe_hdr *hp;
507
508 fr = fcoe_dev_from_skb(skb);
509 lport = fr->fr_dev;
510 if (unlikely(lport == NULL)) {
511 printk(KERN_ERR PFX "Invalid lport struct\n");
512 kfree_skb(skb);
513 return;
514 }
515
516 if (skb_is_nonlinear(skb))
517 skb_linearize(skb);
518 mac = eth_hdr(skb)->h_source;
519 dest_mac = eth_hdr(skb)->h_dest;
520
521 /* Pull the header */
522 hp = (struct fcoe_hdr *) skb_network_header(skb);
523 fh = (struct fc_frame_header *) skb_transport_header(skb);
524 skb_pull(skb, sizeof(struct fcoe_hdr));
525 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
526
527 fp = (struct fc_frame *)skb;
528 fc_frame_init(fp);
529 fr_dev(fp) = lport;
530 fr_sof(fp) = hp->fcoe_sof;
531 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
532 kfree_skb(skb);
533 return;
534 }
535 fr_eof(fp) = crc_eof.fcoe_eof;
536 fr_crc(fp) = crc_eof.fcoe_crc32;
537 if (pskb_trim(skb, fr_len)) {
538 kfree_skb(skb);
539 return;
540 }
541
542 fh = fc_frame_header_get(fp);
543
544 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
545 if (vn_port) {
546 port = lport_priv(vn_port);
547 if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
548 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
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 kfree_skb(skb);
557 return;
558 }
559 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
560 fh->fh_type == FC_TYPE_ELS) {
561 switch (fc_frame_payload_op(fp)) {
562 case ELS_LOGO:
563 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
564 /* drop non-FIP LOGO */
565 kfree_skb(skb);
566 return;
567 }
568 break;
569 }
570 }
571
572 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
573 /* Drop incoming ABTS */
574 kfree_skb(skb);
575 return;
576 }
577
578 stats = per_cpu_ptr(lport->stats, smp_processor_id());
579 stats->RxFrames++;
580 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
581
582 if (le32_to_cpu(fr_crc(fp)) !=
583 ~crc32(~0, skb->data, fr_len)) {
584 if (stats->InvalidCRCCount < 5)
585 printk(KERN_WARNING PFX "dropping frame with "
586 "CRC error\n");
587 stats->InvalidCRCCount++;
588 kfree_skb(skb);
589 return;
590 }
591 fc_exch_recv(lport, fp);
592 }
593
594 /**
595 * bnx2fc_percpu_io_thread - thread per cpu for ios
596 *
597 * @arg: ptr to bnx2fc_percpu_info structure
598 */
599 int bnx2fc_percpu_io_thread(void *arg)
600 {
601 struct bnx2fc_percpu_s *p = arg;
602 struct bnx2fc_work *work, *tmp;
603 LIST_HEAD(work_list);
604
605 set_user_nice(current, MIN_NICE);
606 set_current_state(TASK_INTERRUPTIBLE);
607 while (!kthread_should_stop()) {
608 schedule();
609 spin_lock_bh(&p->fp_work_lock);
610 while (!list_empty(&p->work_list)) {
611 list_splice_init(&p->work_list, &work_list);
612 spin_unlock_bh(&p->fp_work_lock);
613
614 list_for_each_entry_safe(work, tmp, &work_list, list) {
615 list_del_init(&work->list);
616 bnx2fc_process_cq_compl(work->tgt, work->wqe);
617 kfree(work);
618 }
619
620 spin_lock_bh(&p->fp_work_lock);
621 }
622 __set_current_state(TASK_INTERRUPTIBLE);
623 spin_unlock_bh(&p->fp_work_lock);
624 }
625 __set_current_state(TASK_RUNNING);
626
627 return 0;
628 }
629
630 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
631 {
632 struct fc_host_statistics *bnx2fc_stats;
633 struct fc_lport *lport = shost_priv(shost);
634 struct fcoe_port *port = lport_priv(lport);
635 struct bnx2fc_interface *interface = port->priv;
636 struct bnx2fc_hba *hba = interface->hba;
637 struct fcoe_statistics_params *fw_stats;
638 int rc = 0;
639
640 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
641 if (!fw_stats)
642 return NULL;
643
644 mutex_lock(&hba->hba_stats_mutex);
645
646 bnx2fc_stats = fc_get_host_stats(shost);
647
648 init_completion(&hba->stat_req_done);
649 if (bnx2fc_send_stat_req(hba))
650 goto unlock_stats_mutex;
651 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
652 if (!rc) {
653 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
654 goto unlock_stats_mutex;
655 }
656 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
657 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
658 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
659 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
660 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
661 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
662 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
663 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
664 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
665 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
666
667 bnx2fc_stats->dumped_frames = 0;
668 bnx2fc_stats->lip_count = 0;
669 bnx2fc_stats->nos_count = 0;
670 bnx2fc_stats->loss_of_sync_count = 0;
671 bnx2fc_stats->loss_of_signal_count = 0;
672 bnx2fc_stats->prim_seq_protocol_err_count = 0;
673
674 memcpy(&hba->prev_stats, hba->stats_buffer,
675 sizeof(struct fcoe_statistics_params));
676
677 unlock_stats_mutex:
678 mutex_unlock(&hba->hba_stats_mutex);
679 return bnx2fc_stats;
680 }
681
682 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
683 {
684 struct fcoe_port *port = lport_priv(lport);
685 struct bnx2fc_interface *interface = port->priv;
686 struct bnx2fc_hba *hba = interface->hba;
687 struct Scsi_Host *shost = lport->host;
688 int rc = 0;
689
690 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
691 shost->max_lun = BNX2FC_MAX_LUN;
692 shost->max_id = BNX2FC_MAX_FCP_TGT;
693 shost->max_channel = 0;
694 if (lport->vport)
695 shost->transportt = bnx2fc_vport_xport_template;
696 else
697 shost->transportt = bnx2fc_transport_template;
698
699 /* Add the new host to SCSI-ml */
700 rc = scsi_add_host(lport->host, dev);
701 if (rc) {
702 printk(KERN_ERR PFX "Error on scsi_add_host\n");
703 return rc;
704 }
705 if (!lport->vport)
706 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
707 snprintf(fc_host_symbolic_name(lport->host), 256,
708 "%s (QLogic %s) v%s over %s",
709 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
710 interface->netdev->name);
711
712 return 0;
713 }
714
715 static int bnx2fc_link_ok(struct fc_lport *lport)
716 {
717 struct fcoe_port *port = lport_priv(lport);
718 struct bnx2fc_interface *interface = port->priv;
719 struct bnx2fc_hba *hba = interface->hba;
720 struct net_device *dev = hba->phys_dev;
721 int rc = 0;
722
723 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
724 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
725 else {
726 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
727 rc = -1;
728 }
729 return rc;
730 }
731
732 /**
733 * bnx2fc_get_link_state - get network link state
734 *
735 * @hba: adapter instance pointer
736 *
737 * updates adapter structure flag based on netdev state
738 */
739 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
740 {
741 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
742 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
743 else
744 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
745 }
746
747 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
748 {
749 struct bnx2fc_hba *hba;
750 struct bnx2fc_interface *interface;
751 struct fcoe_ctlr *ctlr;
752 struct fcoe_port *port;
753 u64 wwnn, wwpn;
754
755 port = lport_priv(lport);
756 interface = port->priv;
757 ctlr = bnx2fc_to_ctlr(interface);
758 hba = interface->hba;
759
760 /* require support for get_pauseparam ethtool op. */
761 if (!hba->phys_dev->ethtool_ops ||
762 !hba->phys_dev->ethtool_ops->get_pauseparam)
763 return -EOPNOTSUPP;
764
765 if (fc_set_mfs(lport, BNX2FC_MFS))
766 return -EINVAL;
767
768 skb_queue_head_init(&port->fcoe_pending_queue);
769 port->fcoe_pending_queue_active = 0;
770 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
771
772 fcoe_link_speed_update(lport);
773
774 if (!lport->vport) {
775 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
776 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
777 1, 0);
778 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
779 fc_set_wwnn(lport, wwnn);
780
781 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
782 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
783 2, 0);
784
785 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
786 fc_set_wwpn(lport, wwpn);
787 }
788
789 return 0;
790 }
791
792 static void bnx2fc_destroy_timer(unsigned long data)
793 {
794 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
795
796 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
797 "Destroy compl not received!!\n");
798 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
799 wake_up_interruptible(&hba->destroy_wait);
800 }
801
802 /**
803 * bnx2fc_indicate_netevent - Generic netdev event handler
804 *
805 * @context: adapter structure pointer
806 * @event: event type
807 * @vlan_id: vlan id - associated vlan id with this event
808 *
809 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
810 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
811 */
812 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
813 u16 vlan_id)
814 {
815 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
816 struct fcoe_ctlr_device *cdev;
817 struct fc_lport *lport;
818 struct fc_lport *vport;
819 struct bnx2fc_interface *interface, *tmp;
820 struct fcoe_ctlr *ctlr;
821 int wait_for_upload = 0;
822 u32 link_possible = 1;
823
824 if (vlan_id != 0 && event != NETDEV_UNREGISTER)
825 return;
826
827 switch (event) {
828 case NETDEV_UP:
829 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
830 printk(KERN_ERR "indicate_netevent: "\
831 "hba is not UP!!\n");
832 break;
833
834 case NETDEV_DOWN:
835 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
836 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
837 link_possible = 0;
838 break;
839
840 case NETDEV_GOING_DOWN:
841 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
842 link_possible = 0;
843 break;
844
845 case NETDEV_CHANGE:
846 break;
847
848 case NETDEV_UNREGISTER:
849 if (!vlan_id)
850 return;
851 mutex_lock(&bnx2fc_dev_lock);
852 list_for_each_entry_safe(interface, tmp, &if_list, list) {
853 if (interface->hba == hba &&
854 interface->vlan_id == (vlan_id & VLAN_VID_MASK))
855 __bnx2fc_destroy(interface);
856 }
857 mutex_unlock(&bnx2fc_dev_lock);
858
859 /* Ensure ALL destroy work has been completed before return */
860 flush_workqueue(bnx2fc_wq);
861 return;
862
863 default:
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 (!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 mutex_init(&hba->hba_stats_mutex);
1311
1312 hba->cnic = cnic;
1313
1314 hba->max_tasks = cnic->max_fcoe_exchanges;
1315 hba->elstm_xids = (hba->max_tasks / 2);
1316 hba->max_outstanding_cmds = hba->elstm_xids;
1317 hba->max_xid = (hba->max_tasks - 1);
1318
1319 rc = bnx2fc_bind_pcidev(hba);
1320 if (rc) {
1321 printk(KERN_ERR PFX "create_adapter: bind error\n");
1322 goto bind_err;
1323 }
1324 hba->phys_dev = cnic->netdev;
1325 hba->next_conn_id = 0;
1326
1327 hba->tgt_ofld_list =
1328 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1329 GFP_KERNEL);
1330 if (!hba->tgt_ofld_list) {
1331 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1332 goto tgtofld_err;
1333 }
1334
1335 hba->num_ofld_sess = 0;
1336
1337 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1338 if (!hba->cmd_mgr) {
1339 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1340 goto cmgr_err;
1341 }
1342 fcoe_cap = &hba->fcoe_cap;
1343
1344 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1345 FCOE_IOS_PER_CONNECTION_SHIFT;
1346 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1347 FCOE_LOGINS_PER_PORT_SHIFT;
1348 fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1349 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1350 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1351 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1352 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1353 FCOE_TARGETS_SUPPORTED_SHIFT;
1354 fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1355 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1356 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1357
1358 init_waitqueue_head(&hba->shutdown_wait);
1359 init_waitqueue_head(&hba->destroy_wait);
1360 INIT_LIST_HEAD(&hba->vports);
1361
1362 return hba;
1363
1364 cmgr_err:
1365 kfree(hba->tgt_ofld_list);
1366 tgtofld_err:
1367 bnx2fc_unbind_pcidev(hba);
1368 bind_err:
1369 kfree(hba);
1370 return NULL;
1371 }
1372
1373 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1374 struct net_device *netdev,
1375 enum fip_state fip_mode)
1376 {
1377 struct fcoe_ctlr_device *ctlr_dev;
1378 struct bnx2fc_interface *interface;
1379 struct fcoe_ctlr *ctlr;
1380 int size;
1381 int rc = 0;
1382
1383 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1384 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1385 size);
1386 if (!ctlr_dev) {
1387 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1388 return NULL;
1389 }
1390 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1391 ctlr->cdev = ctlr_dev;
1392 interface = fcoe_ctlr_priv(ctlr);
1393 dev_hold(netdev);
1394 kref_init(&interface->kref);
1395 interface->hba = hba;
1396 interface->netdev = netdev;
1397
1398 /* Initialize FIP */
1399 fcoe_ctlr_init(ctlr, fip_mode);
1400 ctlr->send = bnx2fc_fip_send;
1401 ctlr->update_mac = bnx2fc_update_src_mac;
1402 ctlr->get_src_addr = bnx2fc_get_src_mac;
1403 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1404
1405 rc = bnx2fc_interface_setup(interface);
1406 if (!rc)
1407 return interface;
1408
1409 fcoe_ctlr_destroy(ctlr);
1410 dev_put(netdev);
1411 fcoe_ctlr_device_delete(ctlr_dev);
1412 return NULL;
1413 }
1414
1415 /**
1416 * bnx2fc_if_create - Create FCoE instance on a given interface
1417 *
1418 * @interface: FCoE interface to create a local port on
1419 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1420 * @npiv: Indicates if the port is vport or not
1421 *
1422 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1423 *
1424 * Returns: Allocated fc_lport or an error pointer
1425 */
1426 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1427 struct device *parent, int npiv)
1428 {
1429 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1430 struct fc_lport *lport, *n_port;
1431 struct fcoe_port *port;
1432 struct Scsi_Host *shost;
1433 struct fc_vport *vport = dev_to_vport(parent);
1434 struct bnx2fc_lport *blport;
1435 struct bnx2fc_hba *hba = interface->hba;
1436 int rc = 0;
1437
1438 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1439 if (!blport) {
1440 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1441 return NULL;
1442 }
1443
1444 /* Allocate Scsi_Host structure */
1445 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1446 if (!npiv)
1447 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1448 else
1449 lport = libfc_vport_create(vport, sizeof(*port));
1450
1451 if (!lport) {
1452 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1453 goto free_blport;
1454 }
1455 shost = lport->host;
1456 port = lport_priv(lport);
1457 port->lport = lport;
1458 port->priv = interface;
1459 port->get_netdev = bnx2fc_netdev;
1460 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1461
1462 /* Configure fcoe_port */
1463 rc = bnx2fc_lport_config(lport);
1464 if (rc)
1465 goto lp_config_err;
1466
1467 if (npiv) {
1468 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1469 vport->node_name, vport->port_name);
1470 fc_set_wwnn(lport, vport->node_name);
1471 fc_set_wwpn(lport, vport->port_name);
1472 }
1473 /* Configure netdev and networking properties of the lport */
1474 rc = bnx2fc_net_config(lport, interface->netdev);
1475 if (rc) {
1476 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1477 goto lp_config_err;
1478 }
1479
1480 rc = bnx2fc_shost_config(lport, parent);
1481 if (rc) {
1482 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1483 interface->netdev->name);
1484 goto lp_config_err;
1485 }
1486
1487 /* Initialize the libfc library */
1488 rc = bnx2fc_libfc_config(lport);
1489 if (rc) {
1490 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1491 goto shost_err;
1492 }
1493 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1494
1495 /* Allocate exchange manager */
1496 if (!npiv)
1497 rc = bnx2fc_em_config(lport, hba);
1498 else {
1499 shost = vport_to_shost(vport);
1500 n_port = shost_priv(shost);
1501 rc = fc_exch_mgr_list_clone(n_port, lport);
1502 }
1503
1504 if (rc) {
1505 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1506 goto shost_err;
1507 }
1508
1509 bnx2fc_interface_get(interface);
1510
1511 spin_lock_bh(&hba->hba_lock);
1512 blport->lport = lport;
1513 list_add_tail(&blport->list, &hba->vports);
1514 spin_unlock_bh(&hba->hba_lock);
1515
1516 return lport;
1517
1518 shost_err:
1519 scsi_remove_host(shost);
1520 lp_config_err:
1521 scsi_host_put(lport->host);
1522 free_blport:
1523 kfree(blport);
1524 return NULL;
1525 }
1526
1527 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1528 {
1529 /* Dont listen for Ethernet packets anymore */
1530 __dev_remove_pack(&interface->fcoe_packet_type);
1531 __dev_remove_pack(&interface->fip_packet_type);
1532 synchronize_net();
1533 }
1534
1535 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1536 {
1537 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1538 struct fc_lport *lport = ctlr->lp;
1539 struct fcoe_port *port = lport_priv(lport);
1540 struct bnx2fc_hba *hba = interface->hba;
1541
1542 /* Stop the transmit retry timer */
1543 del_timer_sync(&port->timer);
1544
1545 /* Free existing transmit skbs */
1546 fcoe_clean_pending_queue(lport);
1547
1548 bnx2fc_net_cleanup(interface);
1549
1550 bnx2fc_free_vport(hba, lport);
1551 }
1552
1553 static void bnx2fc_if_destroy(struct fc_lport *lport)
1554 {
1555
1556 /* Free queued packets for the receive thread */
1557 bnx2fc_clean_rx_queue(lport);
1558
1559 /* Detach from scsi-ml */
1560 fc_remove_host(lport->host);
1561 scsi_remove_host(lport->host);
1562
1563 /*
1564 * Note that only the physical lport will have the exchange manager.
1565 * for vports, this function is NOP
1566 */
1567 fc_exch_mgr_free(lport);
1568
1569 /* Free memory used by statistical counters */
1570 fc_lport_free_stats(lport);
1571
1572 /* Release Scsi_Host */
1573 scsi_host_put(lport->host);
1574 }
1575
1576 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1577 {
1578 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1579 struct fc_lport *lport = ctlr->lp;
1580 struct fcoe_port *port = lport_priv(lport);
1581
1582 bnx2fc_interface_cleanup(interface);
1583 bnx2fc_stop(interface);
1584 list_del(&interface->list);
1585 bnx2fc_interface_put(interface);
1586 queue_work(bnx2fc_wq, &port->destroy_work);
1587 }
1588
1589 /**
1590 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1591 *
1592 * @buffer: The name of the Ethernet interface to be destroyed
1593 * @kp: The associated kernel parameter
1594 *
1595 * Called from sysfs.
1596 *
1597 * Returns: 0 for success
1598 */
1599 static int bnx2fc_destroy(struct net_device *netdev)
1600 {
1601 struct bnx2fc_interface *interface = NULL;
1602 struct workqueue_struct *timer_work_queue;
1603 struct fcoe_ctlr *ctlr;
1604 int rc = 0;
1605
1606 rtnl_lock();
1607 mutex_lock(&bnx2fc_dev_lock);
1608
1609 interface = bnx2fc_interface_lookup(netdev);
1610 ctlr = bnx2fc_to_ctlr(interface);
1611 if (!interface || !ctlr->lp) {
1612 rc = -ENODEV;
1613 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1614 goto netdev_err;
1615 }
1616
1617 timer_work_queue = interface->timer_work_queue;
1618 __bnx2fc_destroy(interface);
1619 destroy_workqueue(timer_work_queue);
1620
1621 netdev_err:
1622 mutex_unlock(&bnx2fc_dev_lock);
1623 rtnl_unlock();
1624 return rc;
1625 }
1626
1627 static void bnx2fc_destroy_work(struct work_struct *work)
1628 {
1629 struct fcoe_port *port;
1630 struct fc_lport *lport;
1631
1632 port = container_of(work, struct fcoe_port, destroy_work);
1633 lport = port->lport;
1634
1635 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1636
1637 bnx2fc_if_destroy(lport);
1638 }
1639
1640 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1641 {
1642 bnx2fc_free_fw_resc(hba);
1643 bnx2fc_free_task_ctx(hba);
1644 }
1645
1646 /**
1647 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1648 * pci structure
1649 *
1650 * @hba: Adapter instance
1651 */
1652 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1653 {
1654 if (bnx2fc_setup_task_ctx(hba))
1655 goto mem_err;
1656
1657 if (bnx2fc_setup_fw_resc(hba))
1658 goto mem_err;
1659
1660 return 0;
1661 mem_err:
1662 bnx2fc_unbind_adapter_devices(hba);
1663 return -ENOMEM;
1664 }
1665
1666 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1667 {
1668 struct cnic_dev *cnic;
1669 struct pci_dev *pdev;
1670
1671 if (!hba->cnic) {
1672 printk(KERN_ERR PFX "cnic is NULL\n");
1673 return -ENODEV;
1674 }
1675 cnic = hba->cnic;
1676 pdev = hba->pcidev = cnic->pcidev;
1677 if (!hba->pcidev)
1678 return -ENODEV;
1679
1680 switch (pdev->device) {
1681 case PCI_DEVICE_ID_NX2_57710:
1682 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1683 break;
1684 case PCI_DEVICE_ID_NX2_57711:
1685 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1686 break;
1687 case PCI_DEVICE_ID_NX2_57712:
1688 case PCI_DEVICE_ID_NX2_57712_MF:
1689 case PCI_DEVICE_ID_NX2_57712_VF:
1690 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1691 break;
1692 case PCI_DEVICE_ID_NX2_57800:
1693 case PCI_DEVICE_ID_NX2_57800_MF:
1694 case PCI_DEVICE_ID_NX2_57800_VF:
1695 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1696 break;
1697 case PCI_DEVICE_ID_NX2_57810:
1698 case PCI_DEVICE_ID_NX2_57810_MF:
1699 case PCI_DEVICE_ID_NX2_57810_VF:
1700 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1701 break;
1702 case PCI_DEVICE_ID_NX2_57840:
1703 case PCI_DEVICE_ID_NX2_57840_MF:
1704 case PCI_DEVICE_ID_NX2_57840_VF:
1705 case PCI_DEVICE_ID_NX2_57840_2_20:
1706 case PCI_DEVICE_ID_NX2_57840_4_10:
1707 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1708 break;
1709 default:
1710 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1711 break;
1712 }
1713 pci_dev_get(hba->pcidev);
1714 return 0;
1715 }
1716
1717 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1718 {
1719 if (hba->pcidev) {
1720 hba->chip_num[0] = '\0';
1721 pci_dev_put(hba->pcidev);
1722 }
1723 hba->pcidev = NULL;
1724 }
1725
1726 /**
1727 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1728 *
1729 * @handle: transport handle pointing to adapter struture
1730 */
1731 static int bnx2fc_ulp_get_stats(void *handle)
1732 {
1733 struct bnx2fc_hba *hba = handle;
1734 struct cnic_dev *cnic;
1735 struct fcoe_stats_info *stats_addr;
1736
1737 if (!hba)
1738 return -EINVAL;
1739
1740 cnic = hba->cnic;
1741 stats_addr = &cnic->stats_addr->fcoe_stat;
1742 if (!stats_addr)
1743 return -EINVAL;
1744
1745 strncpy(stats_addr->version, BNX2FC_VERSION,
1746 sizeof(stats_addr->version));
1747 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1748 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1749
1750 return 0;
1751 }
1752
1753
1754 /**
1755 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1756 *
1757 * @handle: transport handle pointing to adapter structure
1758 *
1759 * This function maps adapter structure to pcidev structure and initiates
1760 * firmware handshake to enable/initialize on-chip FCoE components.
1761 * This bnx2fc - cnic interface api callback is used after following
1762 * conditions are met -
1763 * a) underlying network interface is up (marked by event NETDEV_UP
1764 * from netdev
1765 * b) bnx2fc adatper structure is registered.
1766 */
1767 static void bnx2fc_ulp_start(void *handle)
1768 {
1769 struct bnx2fc_hba *hba = handle;
1770 struct bnx2fc_interface *interface;
1771 struct fcoe_ctlr *ctlr;
1772 struct fc_lport *lport;
1773
1774 mutex_lock(&bnx2fc_dev_lock);
1775
1776 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1777 bnx2fc_fw_init(hba);
1778
1779 BNX2FC_MISC_DBG("bnx2fc started.\n");
1780
1781 list_for_each_entry(interface, &if_list, list) {
1782 if (interface->hba == hba) {
1783 ctlr = bnx2fc_to_ctlr(interface);
1784 lport = ctlr->lp;
1785 /* Kick off Fabric discovery*/
1786 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1787 lport->tt.frame_send = bnx2fc_xmit;
1788 bnx2fc_start_disc(interface);
1789 }
1790 }
1791
1792 mutex_unlock(&bnx2fc_dev_lock);
1793 }
1794
1795 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1796 {
1797 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1798 fc_fabric_logoff(lport);
1799 fc_lport_destroy(lport);
1800 }
1801
1802 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1803 {
1804 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1805 struct fc_lport *lport;
1806 struct fc_lport *vport;
1807
1808 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1809 return;
1810
1811 lport = ctlr->lp;
1812 bnx2fc_port_shutdown(lport);
1813
1814 mutex_lock(&lport->lp_mutex);
1815 list_for_each_entry(vport, &lport->vports, list)
1816 fc_host_port_type(vport->host) =
1817 FC_PORTTYPE_UNKNOWN;
1818 mutex_unlock(&lport->lp_mutex);
1819 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1820 fcoe_ctlr_link_down(ctlr);
1821 fcoe_clean_pending_queue(lport);
1822 }
1823
1824 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1825 {
1826 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1827 int rc = -1;
1828 int i = HZ;
1829
1830 rc = bnx2fc_bind_adapter_devices(hba);
1831 if (rc) {
1832 printk(KERN_ALERT PFX
1833 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1834 goto err_out;
1835 }
1836
1837 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1838 if (rc) {
1839 printk(KERN_ALERT PFX
1840 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1841 goto err_unbind;
1842 }
1843
1844 /*
1845 * Wait until the adapter init message is complete, and adapter
1846 * state is UP.
1847 */
1848 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1849 msleep(BNX2FC_INIT_POLL_TIME);
1850
1851 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1852 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1853 "Ignoring...\n",
1854 hba->cnic->netdev->name);
1855 rc = -1;
1856 goto err_unbind;
1857 }
1858
1859
1860 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1861 return 0;
1862
1863 err_unbind:
1864 bnx2fc_unbind_adapter_devices(hba);
1865 err_out:
1866 return rc;
1867 }
1868
1869 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1870 {
1871 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1872 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1873 init_timer(&hba->destroy_timer);
1874 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1875 jiffies;
1876 hba->destroy_timer.function = bnx2fc_destroy_timer;
1877 hba->destroy_timer.data = (unsigned long)hba;
1878 add_timer(&hba->destroy_timer);
1879 wait_event_interruptible(hba->destroy_wait,
1880 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1881 &hba->flags));
1882 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1883 /* This should never happen */
1884 if (signal_pending(current))
1885 flush_signals(current);
1886
1887 del_timer_sync(&hba->destroy_timer);
1888 }
1889 bnx2fc_unbind_adapter_devices(hba);
1890 }
1891 }
1892
1893 /**
1894 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1895 *
1896 * @handle: transport handle pointing to adapter structure
1897 *
1898 * Driver checks if adapter is already in shutdown mode, if not start
1899 * the shutdown process.
1900 */
1901 static void bnx2fc_ulp_stop(void *handle)
1902 {
1903 struct bnx2fc_hba *hba = handle;
1904 struct bnx2fc_interface *interface;
1905
1906 printk(KERN_ERR "ULP_STOP\n");
1907
1908 mutex_lock(&bnx2fc_dev_lock);
1909 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1910 goto exit;
1911 list_for_each_entry(interface, &if_list, list) {
1912 if (interface->hba == hba)
1913 bnx2fc_stop(interface);
1914 }
1915 BUG_ON(hba->num_ofld_sess != 0);
1916
1917 mutex_lock(&hba->hba_mutex);
1918 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1919 clear_bit(ADAPTER_STATE_GOING_DOWN,
1920 &hba->adapter_state);
1921
1922 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1923 mutex_unlock(&hba->hba_mutex);
1924
1925 bnx2fc_fw_destroy(hba);
1926 exit:
1927 mutex_unlock(&bnx2fc_dev_lock);
1928 }
1929
1930 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1931 {
1932 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1933 struct fc_lport *lport;
1934 int wait_cnt = 0;
1935
1936 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1937 /* Kick off FIP/FLOGI */
1938 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1939 printk(KERN_ERR PFX "Init not done yet\n");
1940 return;
1941 }
1942
1943 lport = ctlr->lp;
1944 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1945
1946 if (!bnx2fc_link_ok(lport) && interface->enabled) {
1947 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1948 fcoe_ctlr_link_up(ctlr);
1949 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1950 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1951 }
1952
1953 /* wait for the FCF to be selected before issuing FLOGI */
1954 while (!ctlr->sel_fcf) {
1955 msleep(250);
1956 /* give up after 3 secs */
1957 if (++wait_cnt > 12)
1958 break;
1959 }
1960
1961 /* Reset max receive frame size to default */
1962 if (fc_set_mfs(lport, BNX2FC_MFS))
1963 return;
1964
1965 fc_lport_init(lport);
1966 fc_fabric_login(lport);
1967 }
1968
1969
1970 /**
1971 * bnx2fc_ulp_init - Initialize an adapter instance
1972 *
1973 * @dev : cnic device handle
1974 * Called from cnic_register_driver() context to initialize all
1975 * enumerated cnic devices. This routine allocates adapter structure
1976 * and other device specific resources.
1977 */
1978 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1979 {
1980 struct bnx2fc_hba *hba;
1981 int rc = 0;
1982
1983 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1984 /* bnx2fc works only when bnx2x is loaded */
1985 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1986 (dev->max_fcoe_conn == 0)) {
1987 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1988 " flags: %lx fcoe_conn: %d\n",
1989 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1990 return;
1991 }
1992
1993 hba = bnx2fc_hba_create(dev);
1994 if (!hba) {
1995 printk(KERN_ERR PFX "hba initialization failed\n");
1996 return;
1997 }
1998
1999 /* Add HBA to the adapter list */
2000 mutex_lock(&bnx2fc_dev_lock);
2001 list_add_tail(&hba->list, &adapter_list);
2002 adapter_count++;
2003 mutex_unlock(&bnx2fc_dev_lock);
2004
2005 dev->fcoe_cap = &hba->fcoe_cap;
2006 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2007 rc = dev->register_device(dev, CNIC_ULP_FCOE,
2008 (void *) hba);
2009 if (rc)
2010 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2011 else
2012 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2013 }
2014
2015 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2016 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2017 {
2018 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2019
2020 if (interface->enabled == true) {
2021 if (!ctlr->lp) {
2022 pr_err(PFX "__bnx2fc_disable: lport not found\n");
2023 return -ENODEV;
2024 } else {
2025 interface->enabled = false;
2026 fcoe_ctlr_link_down(ctlr);
2027 fcoe_clean_pending_queue(ctlr->lp);
2028 }
2029 }
2030 return 0;
2031 }
2032
2033 /**
2034 * Deperecated: Use bnx2fc_enabled()
2035 */
2036 static int bnx2fc_disable(struct net_device *netdev)
2037 {
2038 struct bnx2fc_interface *interface;
2039 struct fcoe_ctlr *ctlr;
2040 int rc = 0;
2041
2042 rtnl_lock();
2043 mutex_lock(&bnx2fc_dev_lock);
2044
2045 interface = bnx2fc_interface_lookup(netdev);
2046 ctlr = bnx2fc_to_ctlr(interface);
2047
2048 if (!interface) {
2049 rc = -ENODEV;
2050 pr_err(PFX "bnx2fc_disable: interface not found\n");
2051 } else {
2052 rc = __bnx2fc_disable(ctlr);
2053 }
2054 mutex_unlock(&bnx2fc_dev_lock);
2055 rtnl_unlock();
2056 return rc;
2057 }
2058
2059 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2060 struct cnic_fc_npiv_tbl *npiv_tbl)
2061 {
2062 struct fc_vport_identifiers vpid;
2063 uint i, created = 0;
2064
2065 if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2066 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2067 goto done;
2068 }
2069
2070 /* Sanity check the first entry to make sure it's not 0 */
2071 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2072 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2073 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2074 goto done;
2075 }
2076
2077 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2078 vpid.vport_type = FC_PORTTYPE_NPIV;
2079 vpid.disable = false;
2080
2081 for (i = 0; i < npiv_tbl->count; i++) {
2082 vpid.node_name = wwn_to_u64(npiv_tbl->wwnn[i]);
2083 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2084 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2085 "NPIV[%u]:%016llx-%016llx",
2086 created, vpid.port_name, vpid.node_name);
2087 if (fc_vport_create(lport->host, 0, &vpid))
2088 created++;
2089 else
2090 BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2091 }
2092 done:
2093 return created;
2094 }
2095
2096 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2097 {
2098 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2099 struct bnx2fc_hba *hba;
2100 struct cnic_fc_npiv_tbl *npiv_tbl;
2101 struct fc_lport *lport;
2102
2103 if (interface->enabled == false) {
2104 if (!ctlr->lp) {
2105 pr_err(PFX "__bnx2fc_enable: lport not found\n");
2106 return -ENODEV;
2107 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2108 fcoe_ctlr_link_up(ctlr);
2109 interface->enabled = true;
2110 }
2111 }
2112
2113 /* Create static NPIV ports if any are contained in NVRAM */
2114 hba = interface->hba;
2115 lport = ctlr->lp;
2116
2117 if (!hba)
2118 goto done;
2119
2120 if (!hba->cnic)
2121 goto done;
2122
2123 if (!lport)
2124 goto done;
2125
2126 if (!lport->host)
2127 goto done;
2128
2129 if (!hba->cnic->get_fc_npiv_tbl)
2130 goto done;
2131
2132 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2133 if (!npiv_tbl)
2134 goto done;
2135
2136 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2137 goto done_free;
2138
2139 bnx2fc_npiv_create_vports(lport, npiv_tbl);
2140 done_free:
2141 kfree(npiv_tbl);
2142 done:
2143 return 0;
2144 }
2145
2146 /**
2147 * Deprecated: Use bnx2fc_enabled()
2148 */
2149 static int bnx2fc_enable(struct net_device *netdev)
2150 {
2151 struct bnx2fc_interface *interface;
2152 struct fcoe_ctlr *ctlr;
2153 int rc = 0;
2154
2155 rtnl_lock();
2156 mutex_lock(&bnx2fc_dev_lock);
2157
2158 interface = bnx2fc_interface_lookup(netdev);
2159 ctlr = bnx2fc_to_ctlr(interface);
2160 if (!interface) {
2161 rc = -ENODEV;
2162 pr_err(PFX "bnx2fc_enable: interface not found\n");
2163 } else {
2164 rc = __bnx2fc_enable(ctlr);
2165 }
2166
2167 mutex_unlock(&bnx2fc_dev_lock);
2168 rtnl_unlock();
2169 return rc;
2170 }
2171
2172 /**
2173 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2174 * @cdev: The FCoE Controller that is being enabled or disabled
2175 *
2176 * fcoe_sysfs will ensure that the state of 'enabled' has
2177 * changed, so no checking is necessary here. This routine simply
2178 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2179 * When those routines are removed the functionality can be merged
2180 * here.
2181 */
2182 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2183 {
2184 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2185
2186 switch (cdev->enabled) {
2187 case FCOE_CTLR_ENABLED:
2188 return __bnx2fc_enable(ctlr);
2189 case FCOE_CTLR_DISABLED:
2190 return __bnx2fc_disable(ctlr);
2191 case FCOE_CTLR_UNUSED:
2192 default:
2193 return -ENOTSUPP;
2194 };
2195 }
2196
2197 enum bnx2fc_create_link_state {
2198 BNX2FC_CREATE_LINK_DOWN,
2199 BNX2FC_CREATE_LINK_UP,
2200 };
2201
2202 /**
2203 * _bnx2fc_create() - Create bnx2fc FCoE interface
2204 * @netdev : The net_device object the Ethernet interface to create on
2205 * @fip_mode: The FIP mode for this creation
2206 * @link_state: The ctlr link state on creation
2207 *
2208 * Called from either the libfcoe 'create' module parameter
2209 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2210 *
2211 * libfcoe's 'create' module parameter is deprecated so some
2212 * consolidation of code can be done when that interface is
2213 * removed.
2214 *
2215 * Returns: 0 for success
2216 */
2217 static int _bnx2fc_create(struct net_device *netdev,
2218 enum fip_state fip_mode,
2219 enum bnx2fc_create_link_state link_state)
2220 {
2221 struct fcoe_ctlr_device *cdev;
2222 struct fcoe_ctlr *ctlr;
2223 struct bnx2fc_interface *interface;
2224 struct bnx2fc_hba *hba;
2225 struct net_device *phys_dev = netdev;
2226 struct fc_lport *lport;
2227 struct ethtool_drvinfo drvinfo;
2228 int rc = 0;
2229 int vlan_id = 0;
2230
2231 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2232 if (fip_mode != FIP_MODE_FABRIC) {
2233 printk(KERN_ERR "fip mode not FABRIC\n");
2234 return -EIO;
2235 }
2236
2237 rtnl_lock();
2238
2239 mutex_lock(&bnx2fc_dev_lock);
2240
2241 if (!try_module_get(THIS_MODULE)) {
2242 rc = -EINVAL;
2243 goto mod_err;
2244 }
2245
2246 /* obtain physical netdev */
2247 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2248 phys_dev = vlan_dev_real_dev(netdev);
2249
2250 /* verify if the physical device is a netxtreme2 device */
2251 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2252 memset(&drvinfo, 0, sizeof(drvinfo));
2253 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2254 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2255 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2256 rc = -EINVAL;
2257 goto netdev_err;
2258 }
2259 } else {
2260 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2261 rc = -EINVAL;
2262 goto netdev_err;
2263 }
2264
2265 /* obtain interface and initialize rest of the structure */
2266 hba = bnx2fc_hba_lookup(phys_dev);
2267 if (!hba) {
2268 rc = -ENODEV;
2269 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2270 goto netdev_err;
2271 }
2272
2273 if (bnx2fc_interface_lookup(netdev)) {
2274 rc = -EEXIST;
2275 goto netdev_err;
2276 }
2277
2278 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2279 if (!interface) {
2280 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2281 rc = -ENOMEM;
2282 goto ifput_err;
2283 }
2284
2285 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2286 vlan_id = vlan_dev_vlan_id(netdev);
2287 interface->vlan_enabled = 1;
2288 }
2289
2290 ctlr = bnx2fc_to_ctlr(interface);
2291 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2292 interface->vlan_id = vlan_id;
2293
2294 interface->timer_work_queue =
2295 create_singlethread_workqueue("bnx2fc_timer_wq");
2296 if (!interface->timer_work_queue) {
2297 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2298 rc = -EINVAL;
2299 goto ifput_err;
2300 }
2301
2302 lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2303 if (!lport) {
2304 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2305 netdev->name);
2306 rc = -EINVAL;
2307 goto if_create_err;
2308 }
2309
2310 /* Add interface to if_list */
2311 list_add_tail(&interface->list, &if_list);
2312
2313 lport->boot_time = jiffies;
2314
2315 /* Make this master N_port */
2316 ctlr->lp = lport;
2317
2318 if (link_state == BNX2FC_CREATE_LINK_UP)
2319 cdev->enabled = FCOE_CTLR_ENABLED;
2320 else
2321 cdev->enabled = FCOE_CTLR_DISABLED;
2322
2323 if (link_state == BNX2FC_CREATE_LINK_UP &&
2324 !bnx2fc_link_ok(lport)) {
2325 fcoe_ctlr_link_up(ctlr);
2326 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2327 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2328 }
2329
2330 BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2331 bnx2fc_start_disc(interface);
2332
2333 if (link_state == BNX2FC_CREATE_LINK_UP)
2334 interface->enabled = true;
2335
2336 /*
2337 * Release from kref_init in bnx2fc_interface_setup, on success
2338 * lport should be holding a reference taken in bnx2fc_if_create
2339 */
2340 bnx2fc_interface_put(interface);
2341 /* put netdev that was held while calling dev_get_by_name */
2342 mutex_unlock(&bnx2fc_dev_lock);
2343 rtnl_unlock();
2344 return 0;
2345
2346 if_create_err:
2347 destroy_workqueue(interface->timer_work_queue);
2348 ifput_err:
2349 bnx2fc_net_cleanup(interface);
2350 bnx2fc_interface_put(interface);
2351 goto mod_err;
2352 netdev_err:
2353 module_put(THIS_MODULE);
2354 mod_err:
2355 mutex_unlock(&bnx2fc_dev_lock);
2356 rtnl_unlock();
2357 return rc;
2358 }
2359
2360 /**
2361 * bnx2fc_create() - Create a bnx2fc interface
2362 * @netdev : The net_device object the Ethernet interface to create on
2363 * @fip_mode: The FIP mode for this creation
2364 *
2365 * Called from fcoe transport
2366 *
2367 * Returns: 0 for success
2368 */
2369 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2370 {
2371 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2372 }
2373
2374 /**
2375 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2376 * @netdev: The net_device to be used by the allocated FCoE Controller
2377 *
2378 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2379 * in a link_down state. The allows the user an opportunity to configure
2380 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2381 *
2382 * Creating in with this routine starts the FCoE Controller in Fabric
2383 * mode. The user can change to VN2VN or another mode before enabling.
2384 */
2385 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2386 {
2387 return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2388 BNX2FC_CREATE_LINK_DOWN);
2389 }
2390
2391 /**
2392 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2393 *
2394 * @cnic: Pointer to cnic device instance
2395 *
2396 **/
2397 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2398 {
2399 struct bnx2fc_hba *hba;
2400
2401 /* Called with bnx2fc_dev_lock held */
2402 list_for_each_entry(hba, &adapter_list, list) {
2403 if (hba->cnic == cnic)
2404 return hba;
2405 }
2406 return NULL;
2407 }
2408
2409 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2410 *netdev)
2411 {
2412 struct bnx2fc_interface *interface;
2413
2414 /* Called with bnx2fc_dev_lock held */
2415 list_for_each_entry(interface, &if_list, list) {
2416 if (interface->netdev == netdev)
2417 return interface;
2418 }
2419 return NULL;
2420 }
2421
2422 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2423 *phys_dev)
2424 {
2425 struct bnx2fc_hba *hba;
2426
2427 /* Called with bnx2fc_dev_lock held */
2428 list_for_each_entry(hba, &adapter_list, list) {
2429 if (hba->phys_dev == phys_dev)
2430 return hba;
2431 }
2432 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2433 return NULL;
2434 }
2435
2436 /**
2437 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2438 *
2439 * @dev cnic device handle
2440 */
2441 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2442 {
2443 struct bnx2fc_hba *hba;
2444 struct bnx2fc_interface *interface, *tmp;
2445
2446 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2447
2448 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2449 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2450 dev->netdev->name, dev->flags);
2451 return;
2452 }
2453
2454 mutex_lock(&bnx2fc_dev_lock);
2455 hba = bnx2fc_find_hba_for_cnic(dev);
2456 if (!hba) {
2457 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2458 dev);
2459 mutex_unlock(&bnx2fc_dev_lock);
2460 return;
2461 }
2462
2463 list_del_init(&hba->list);
2464 adapter_count--;
2465
2466 list_for_each_entry_safe(interface, tmp, &if_list, list)
2467 /* destroy not called yet, move to quiesced list */
2468 if (interface->hba == hba)
2469 __bnx2fc_destroy(interface);
2470 mutex_unlock(&bnx2fc_dev_lock);
2471
2472 /* Ensure ALL destroy work has been completed before return */
2473 flush_workqueue(bnx2fc_wq);
2474
2475 bnx2fc_ulp_stop(hba);
2476 /* unregister cnic device */
2477 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2478 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2479 bnx2fc_hba_destroy(hba);
2480 }
2481
2482 /**
2483 * bnx2fc_fcoe_reset - Resets the fcoe
2484 *
2485 * @shost: shost the reset is from
2486 *
2487 * Returns: always 0
2488 */
2489 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2490 {
2491 struct fc_lport *lport = shost_priv(shost);
2492 fc_lport_reset(lport);
2493 return 0;
2494 }
2495
2496
2497 static bool bnx2fc_match(struct net_device *netdev)
2498 {
2499 struct net_device *phys_dev = netdev;
2500
2501 mutex_lock(&bnx2fc_dev_lock);
2502 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2503 phys_dev = vlan_dev_real_dev(netdev);
2504
2505 if (bnx2fc_hba_lookup(phys_dev)) {
2506 mutex_unlock(&bnx2fc_dev_lock);
2507 return true;
2508 }
2509
2510 mutex_unlock(&bnx2fc_dev_lock);
2511 return false;
2512 }
2513
2514
2515 static struct fcoe_transport bnx2fc_transport = {
2516 .name = {"bnx2fc"},
2517 .attached = false,
2518 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2519 .alloc = bnx2fc_ctlr_alloc,
2520 .match = bnx2fc_match,
2521 .create = bnx2fc_create,
2522 .destroy = bnx2fc_destroy,
2523 .enable = bnx2fc_enable,
2524 .disable = bnx2fc_disable,
2525 };
2526
2527 /**
2528 * bnx2fc_percpu_thread_create - Create a receive thread for an
2529 * online CPU
2530 *
2531 * @cpu: cpu index for the online cpu
2532 */
2533 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2534 {
2535 struct bnx2fc_percpu_s *p;
2536 struct task_struct *thread;
2537
2538 p = &per_cpu(bnx2fc_percpu, cpu);
2539
2540 thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2541 (void *)p, cpu_to_node(cpu),
2542 "bnx2fc_thread/%d", cpu);
2543 /* bind thread to the cpu */
2544 if (likely(!IS_ERR(thread))) {
2545 kthread_bind(thread, cpu);
2546 p->iothread = thread;
2547 wake_up_process(thread);
2548 }
2549 }
2550
2551 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2552 {
2553 struct bnx2fc_percpu_s *p;
2554 struct task_struct *thread;
2555 struct bnx2fc_work *work, *tmp;
2556
2557 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2558
2559 /* Prevent any new work from being queued for this CPU */
2560 p = &per_cpu(bnx2fc_percpu, cpu);
2561 spin_lock_bh(&p->fp_work_lock);
2562 thread = p->iothread;
2563 p->iothread = NULL;
2564
2565
2566 /* Free all work in the list */
2567 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2568 list_del_init(&work->list);
2569 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2570 kfree(work);
2571 }
2572
2573 spin_unlock_bh(&p->fp_work_lock);
2574
2575 if (thread)
2576 kthread_stop(thread);
2577 }
2578
2579 /**
2580 * bnx2fc_cpu_callback - Handler for CPU hotplug events
2581 *
2582 * @nfb: The callback data block
2583 * @action: The event triggering the callback
2584 * @hcpu: The index of the CPU that the event is for
2585 *
2586 * This creates or destroys per-CPU data for fcoe
2587 *
2588 * Returns NOTIFY_OK always.
2589 */
2590 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2591 unsigned long action, void *hcpu)
2592 {
2593 unsigned cpu = (unsigned long)hcpu;
2594
2595 switch (action) {
2596 case CPU_ONLINE:
2597 case CPU_ONLINE_FROZEN:
2598 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2599 bnx2fc_percpu_thread_create(cpu);
2600 break;
2601 case CPU_DEAD:
2602 case CPU_DEAD_FROZEN:
2603 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2604 bnx2fc_percpu_thread_destroy(cpu);
2605 break;
2606 default:
2607 break;
2608 }
2609 return NOTIFY_OK;
2610 }
2611
2612 /**
2613 * bnx2fc_mod_init - module init entry point
2614 *
2615 * Initialize driver wide global data structures, and register
2616 * with cnic module
2617 **/
2618 static int __init bnx2fc_mod_init(void)
2619 {
2620 struct fcoe_percpu_s *bg;
2621 struct task_struct *l2_thread;
2622 int rc = 0;
2623 unsigned int cpu = 0;
2624 struct bnx2fc_percpu_s *p;
2625
2626 printk(KERN_INFO PFX "%s", version);
2627
2628 /* register as a fcoe transport */
2629 rc = fcoe_transport_attach(&bnx2fc_transport);
2630 if (rc) {
2631 printk(KERN_ERR "failed to register an fcoe transport, check "
2632 "if libfcoe is loaded\n");
2633 goto out;
2634 }
2635
2636 INIT_LIST_HEAD(&adapter_list);
2637 INIT_LIST_HEAD(&if_list);
2638 mutex_init(&bnx2fc_dev_lock);
2639 adapter_count = 0;
2640
2641 /* Attach FC transport template */
2642 rc = bnx2fc_attach_transport();
2643 if (rc)
2644 goto detach_ft;
2645
2646 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2647 if (!bnx2fc_wq) {
2648 rc = -ENOMEM;
2649 goto release_bt;
2650 }
2651
2652 bg = &bnx2fc_global;
2653 skb_queue_head_init(&bg->fcoe_rx_list);
2654 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2655 (void *)bg,
2656 "bnx2fc_l2_thread");
2657 if (IS_ERR(l2_thread)) {
2658 rc = PTR_ERR(l2_thread);
2659 goto free_wq;
2660 }
2661 wake_up_process(l2_thread);
2662 spin_lock_bh(&bg->fcoe_rx_list.lock);
2663 bg->thread = l2_thread;
2664 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2665
2666 for_each_possible_cpu(cpu) {
2667 p = &per_cpu(bnx2fc_percpu, cpu);
2668 INIT_LIST_HEAD(&p->work_list);
2669 spin_lock_init(&p->fp_work_lock);
2670 }
2671
2672 cpu_notifier_register_begin();
2673
2674 for_each_online_cpu(cpu) {
2675 bnx2fc_percpu_thread_create(cpu);
2676 }
2677
2678 /* Initialize per CPU interrupt thread */
2679 __register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2680
2681 cpu_notifier_register_done();
2682
2683 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2684
2685 return 0;
2686
2687 free_wq:
2688 destroy_workqueue(bnx2fc_wq);
2689 release_bt:
2690 bnx2fc_release_transport();
2691 detach_ft:
2692 fcoe_transport_detach(&bnx2fc_transport);
2693 out:
2694 return rc;
2695 }
2696
2697 static void __exit bnx2fc_mod_exit(void)
2698 {
2699 LIST_HEAD(to_be_deleted);
2700 struct bnx2fc_hba *hba, *next;
2701 struct fcoe_percpu_s *bg;
2702 struct task_struct *l2_thread;
2703 struct sk_buff *skb;
2704 unsigned int cpu = 0;
2705
2706 /*
2707 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2708 * it will have higher precedence than bnx2fc_dev_lock.
2709 * unregister_device() cannot be called with bnx2fc_dev_lock
2710 * held.
2711 */
2712 mutex_lock(&bnx2fc_dev_lock);
2713 list_splice(&adapter_list, &to_be_deleted);
2714 INIT_LIST_HEAD(&adapter_list);
2715 adapter_count = 0;
2716 mutex_unlock(&bnx2fc_dev_lock);
2717
2718 /* Unregister with cnic */
2719 list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2720 list_del_init(&hba->list);
2721 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2722 hba);
2723 bnx2fc_ulp_stop(hba);
2724 /* unregister cnic device */
2725 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2726 &hba->reg_with_cnic))
2727 hba->cnic->unregister_device(hba->cnic,
2728 CNIC_ULP_FCOE);
2729 bnx2fc_hba_destroy(hba);
2730 }
2731 cnic_unregister_driver(CNIC_ULP_FCOE);
2732
2733 /* Destroy global thread */
2734 bg = &bnx2fc_global;
2735 spin_lock_bh(&bg->fcoe_rx_list.lock);
2736 l2_thread = bg->thread;
2737 bg->thread = NULL;
2738 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2739 kfree_skb(skb);
2740
2741 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2742
2743 if (l2_thread)
2744 kthread_stop(l2_thread);
2745
2746 cpu_notifier_register_begin();
2747
2748 /* Destroy per cpu threads */
2749 for_each_online_cpu(cpu) {
2750 bnx2fc_percpu_thread_destroy(cpu);
2751 }
2752
2753 __unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2754
2755 cpu_notifier_register_done();
2756
2757 destroy_workqueue(bnx2fc_wq);
2758 /*
2759 * detach from scsi transport
2760 * must happen after all destroys are done
2761 */
2762 bnx2fc_release_transport();
2763
2764 /* detach from fcoe transport */
2765 fcoe_transport_detach(&bnx2fc_transport);
2766 }
2767
2768 module_init(bnx2fc_mod_init);
2769 module_exit(bnx2fc_mod_exit);
2770
2771 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2772 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2773 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2774 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2775 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2776 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2777 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2778 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2779
2780 .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2781 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2782 };
2783
2784 static struct fc_function_template bnx2fc_transport_function = {
2785 .show_host_node_name = 1,
2786 .show_host_port_name = 1,
2787 .show_host_supported_classes = 1,
2788 .show_host_supported_fc4s = 1,
2789 .show_host_active_fc4s = 1,
2790 .show_host_maxframe_size = 1,
2791
2792 .show_host_port_id = 1,
2793 .show_host_supported_speeds = 1,
2794 .get_host_speed = fc_get_host_speed,
2795 .show_host_speed = 1,
2796 .show_host_port_type = 1,
2797 .get_host_port_state = fc_get_host_port_state,
2798 .show_host_port_state = 1,
2799 .show_host_symbolic_name = 1,
2800
2801 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2802 sizeof(struct bnx2fc_rport)),
2803 .show_rport_maxframe_size = 1,
2804 .show_rport_supported_classes = 1,
2805
2806 .show_host_fabric_name = 1,
2807 .show_starget_node_name = 1,
2808 .show_starget_port_name = 1,
2809 .show_starget_port_id = 1,
2810 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2811 .show_rport_dev_loss_tmo = 1,
2812 .get_fc_host_stats = bnx2fc_get_host_stats,
2813
2814 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2815
2816 .terminate_rport_io = fc_rport_terminate_io,
2817
2818 .vport_create = bnx2fc_vport_create,
2819 .vport_delete = bnx2fc_vport_destroy,
2820 .vport_disable = bnx2fc_vport_disable,
2821 .bsg_request = fc_lport_bsg_request,
2822 };
2823
2824 static struct fc_function_template bnx2fc_vport_xport_function = {
2825 .show_host_node_name = 1,
2826 .show_host_port_name = 1,
2827 .show_host_supported_classes = 1,
2828 .show_host_supported_fc4s = 1,
2829 .show_host_active_fc4s = 1,
2830 .show_host_maxframe_size = 1,
2831
2832 .show_host_port_id = 1,
2833 .show_host_supported_speeds = 1,
2834 .get_host_speed = fc_get_host_speed,
2835 .show_host_speed = 1,
2836 .show_host_port_type = 1,
2837 .get_host_port_state = fc_get_host_port_state,
2838 .show_host_port_state = 1,
2839 .show_host_symbolic_name = 1,
2840
2841 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2842 sizeof(struct bnx2fc_rport)),
2843 .show_rport_maxframe_size = 1,
2844 .show_rport_supported_classes = 1,
2845
2846 .show_host_fabric_name = 1,
2847 .show_starget_node_name = 1,
2848 .show_starget_port_name = 1,
2849 .show_starget_port_id = 1,
2850 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2851 .show_rport_dev_loss_tmo = 1,
2852 .get_fc_host_stats = fc_get_host_stats,
2853 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2854 .terminate_rport_io = fc_rport_terminate_io,
2855 .bsg_request = fc_lport_bsg_request,
2856 };
2857
2858 /**
2859 * scsi_host_template structure used while registering with SCSI-ml
2860 */
2861 static struct scsi_host_template bnx2fc_shost_template = {
2862 .module = THIS_MODULE,
2863 .name = "QLogic Offload FCoE Initiator",
2864 .queuecommand = bnx2fc_queuecommand,
2865 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2866 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2867 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2868 .eh_host_reset_handler = fc_eh_host_reset,
2869 .slave_alloc = fc_slave_alloc,
2870 .change_queue_depth = scsi_change_queue_depth,
2871 .this_id = -1,
2872 .cmd_per_lun = 3,
2873 .use_clustering = ENABLE_CLUSTERING,
2874 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2875 .max_sectors = 1024,
2876 .track_queue_depth = 1,
2877 };
2878
2879 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2880 .frame_send = bnx2fc_xmit,
2881 .elsct_send = bnx2fc_elsct_send,
2882 .fcp_abort_io = bnx2fc_abort_io,
2883 .fcp_cleanup = bnx2fc_cleanup,
2884 .get_lesb = fcoe_get_lesb,
2885 .rport_event_callback = bnx2fc_rport_event_handler,
2886 };
2887
2888 /**
2889 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2890 * structure carrying callback function pointers
2891 */
2892 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2893 .owner = THIS_MODULE,
2894 .cnic_init = bnx2fc_ulp_init,
2895 .cnic_exit = bnx2fc_ulp_exit,
2896 .cnic_start = bnx2fc_ulp_start,
2897 .cnic_stop = bnx2fc_ulp_stop,
2898 .indicate_kcqes = bnx2fc_indicate_kcqe,
2899 .indicate_netevent = bnx2fc_indicate_netevent,
2900 .cnic_get_stats = bnx2fc_ulp_get_stats,
2901 };
Linux with added FPC-III support