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[mirror_ubuntu-artful-kernel.git] / drivers / scsi / bnx2fc / bnx2fc_fcoe.c
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_mode 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 MODULE_PARM_DESC(debug_logging,
101 "Option to enable extended logging,\n"
102 "\t\tDefault is 0 - no logging.\n"
103 "\t\t0x01 - SCSI cmd error, cleanup.\n"
104 "\t\t0x02 - Session setup, cleanup, etc.\n"
105 "\t\t0x04 - lport events, link, mtu, etc.\n"
106 "\t\t0x08 - ELS logs.\n"
107 "\t\t0x10 - fcoe L2 fame related logs.\n"
108 "\t\t0xff - LOG all messages.");
109
110 uint bnx2fc_devloss_tmo;
111 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO);
112 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports "
113 "attached via bnx2fc.");
114
115 uint bnx2fc_max_luns = BNX2FC_MAX_LUN;
116 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO);
117 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default "
118 "0xffff.");
119
120 uint bnx2fc_queue_depth;
121 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO);
122 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices "
123 "attached via bnx2fc.");
124
125 uint bnx2fc_log_fka;
126 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
127 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
128 "initiating a FIP keep alive when debug logging is enabled.");
129
130 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
131 {
132 return ((struct bnx2fc_interface *)
133 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
134 }
135
136 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
137 {
138 struct fcoe_ctlr_device *ctlr_dev =
139 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
140 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
141 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
142
143 fcf_dev->vlan_id = fcoe->vlan_id;
144 }
145
146 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
147 {
148 struct fcoe_percpu_s *bg;
149 struct fcoe_rcv_info *fr;
150 struct sk_buff_head *list;
151 struct sk_buff *skb, *next;
152 struct sk_buff *head;
153
154 bg = &bnx2fc_global;
155 spin_lock_bh(&bg->fcoe_rx_list.lock);
156 list = &bg->fcoe_rx_list;
157 head = list->next;
158 for (skb = head; skb != (struct sk_buff *)list;
159 skb = next) {
160 next = skb->next;
161 fr = fcoe_dev_from_skb(skb);
162 if (fr->fr_dev == lp) {
163 __skb_unlink(skb, list);
164 kfree_skb(skb);
165 }
166 }
167 spin_unlock_bh(&bg->fcoe_rx_list.lock);
168 }
169
170 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
171 {
172 int rc;
173 spin_lock(&bnx2fc_global_lock);
174 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
175 spin_unlock(&bnx2fc_global_lock);
176
177 return rc;
178 }
179
180 static void bnx2fc_abort_io(struct fc_lport *lport)
181 {
182 /*
183 * This function is no-op for bnx2fc, but we do
184 * not want to leave it as NULL either, as libfc
185 * can call the default function which is
186 * fc_fcp_abort_io.
187 */
188 }
189
190 static void bnx2fc_cleanup(struct fc_lport *lport)
191 {
192 struct fcoe_port *port = lport_priv(lport);
193 struct bnx2fc_interface *interface = port->priv;
194 struct bnx2fc_hba *hba = interface->hba;
195 struct bnx2fc_rport *tgt;
196 int i;
197
198 BNX2FC_MISC_DBG("Entered %s\n", __func__);
199 mutex_lock(&hba->hba_mutex);
200 spin_lock_bh(&hba->hba_lock);
201 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
202 tgt = hba->tgt_ofld_list[i];
203 if (tgt) {
204 /* Cleanup IOs belonging to requested vport */
205 if (tgt->port == port) {
206 spin_unlock_bh(&hba->hba_lock);
207 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
208 bnx2fc_flush_active_ios(tgt);
209 spin_lock_bh(&hba->hba_lock);
210 }
211 }
212 }
213 spin_unlock_bh(&hba->hba_lock);
214 mutex_unlock(&hba->hba_mutex);
215 }
216
217 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
218 struct fc_frame *fp)
219 {
220 struct fc_rport_priv *rdata = tgt->rdata;
221 struct fc_frame_header *fh;
222 int rc = 0;
223
224 fh = fc_frame_header_get(fp);
225 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
226 "r_ctl = 0x%x\n", rdata->ids.port_id,
227 ntohs(fh->fh_ox_id), fh->fh_r_ctl);
228 if ((fh->fh_type == FC_TYPE_ELS) &&
229 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
230
231 switch (fc_frame_payload_op(fp)) {
232 case ELS_ADISC:
233 rc = bnx2fc_send_adisc(tgt, fp);
234 break;
235 case ELS_LOGO:
236 rc = bnx2fc_send_logo(tgt, fp);
237 break;
238 case ELS_RLS:
239 rc = bnx2fc_send_rls(tgt, fp);
240 break;
241 default:
242 break;
243 }
244 } else if ((fh->fh_type == FC_TYPE_BLS) &&
245 (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
246 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
247 else {
248 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
249 "rctl 0x%x thru non-offload path\n",
250 fh->fh_type, fh->fh_r_ctl);
251 return -ENODEV;
252 }
253 if (rc)
254 return -ENOMEM;
255 else
256 return 0;
257 }
258
259 /**
260 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
261 *
262 * @lport: the associated local port
263 * @fp: the fc_frame to be transmitted
264 */
265 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
266 {
267 struct ethhdr *eh;
268 struct fcoe_crc_eof *cp;
269 struct sk_buff *skb;
270 struct fc_frame_header *fh;
271 struct bnx2fc_interface *interface;
272 struct fcoe_ctlr *ctlr;
273 struct bnx2fc_hba *hba;
274 struct fcoe_port *port;
275 struct fcoe_hdr *hp;
276 struct bnx2fc_rport *tgt;
277 struct fc_stats *stats;
278 u8 sof, eof;
279 u32 crc;
280 unsigned int hlen, tlen, elen;
281 int wlen, rc = 0;
282
283 port = (struct fcoe_port *)lport_priv(lport);
284 interface = port->priv;
285 ctlr = bnx2fc_to_ctlr(interface);
286 hba = interface->hba;
287
288 fh = fc_frame_header_get(fp);
289
290 skb = fp_skb(fp);
291 if (!lport->link_up) {
292 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
293 kfree_skb(skb);
294 return 0;
295 }
296
297 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
298 if (!ctlr->sel_fcf) {
299 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
300 kfree_skb(skb);
301 return -EINVAL;
302 }
303 if (fcoe_ctlr_els_send(ctlr, lport, skb))
304 return 0;
305 }
306
307 sof = fr_sof(fp);
308 eof = fr_eof(fp);
309
310 /*
311 * Snoop the frame header to check if the frame is for
312 * an offloaded session
313 */
314 /*
315 * tgt_ofld_list access is synchronized using
316 * both hba mutex and hba lock. Atleast hba mutex or
317 * hba lock needs to be held for read access.
318 */
319
320 spin_lock_bh(&hba->hba_lock);
321 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
322 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
323 /* This frame is for offloaded session */
324 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
325 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
326 spin_unlock_bh(&hba->hba_lock);
327 rc = bnx2fc_xmit_l2_frame(tgt, fp);
328 if (rc != -ENODEV) {
329 kfree_skb(skb);
330 return rc;
331 }
332 } else {
333 spin_unlock_bh(&hba->hba_lock);
334 }
335
336 elen = sizeof(struct ethhdr);
337 hlen = sizeof(struct fcoe_hdr);
338 tlen = sizeof(struct fcoe_crc_eof);
339 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
340
341 skb->ip_summed = CHECKSUM_NONE;
342 crc = fcoe_fc_crc(fp);
343
344 /* copy port crc and eof to the skb buff */
345 if (skb_is_nonlinear(skb)) {
346 skb_frag_t *frag;
347 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
348 kfree_skb(skb);
349 return -ENOMEM;
350 }
351 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
352 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
353 } else {
354 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
355 }
356
357 memset(cp, 0, sizeof(*cp));
358 cp->fcoe_eof = eof;
359 cp->fcoe_crc32 = cpu_to_le32(~crc);
360 if (skb_is_nonlinear(skb)) {
361 kunmap_atomic(cp);
362 cp = NULL;
363 }
364
365 /* adjust skb network/transport offsets to match mac/fcoe/port */
366 skb_push(skb, elen + hlen);
367 skb_reset_mac_header(skb);
368 skb_reset_network_header(skb);
369 skb->mac_len = elen;
370 skb->protocol = htons(ETH_P_FCOE);
371 skb->dev = interface->netdev;
372
373 /* fill up mac and fcoe headers */
374 eh = eth_hdr(skb);
375 eh->h_proto = htons(ETH_P_FCOE);
376 if (ctlr->map_dest)
377 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
378 else
379 /* insert GW address */
380 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
381
382 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
383 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
384 else
385 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
386
387 hp = (struct fcoe_hdr *)(eh + 1);
388 memset(hp, 0, sizeof(*hp));
389 if (FC_FCOE_VER)
390 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
391 hp->fcoe_sof = sof;
392
393 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
394 if (lport->seq_offload && fr_max_payload(fp)) {
395 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
396 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
397 } else {
398 skb_shinfo(skb)->gso_type = 0;
399 skb_shinfo(skb)->gso_size = 0;
400 }
401
402 /*update tx stats */
403 stats = per_cpu_ptr(lport->stats, get_cpu());
404 stats->TxFrames++;
405 stats->TxWords += wlen;
406 put_cpu();
407
408 /* send down to lld */
409 fr_dev(fp) = lport;
410 if (port->fcoe_pending_queue.qlen)
411 fcoe_check_wait_queue(lport, skb);
412 else if (fcoe_start_io(skb))
413 fcoe_check_wait_queue(lport, skb);
414
415 return 0;
416 }
417
418 /**
419 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
420 *
421 * @skb: the receive socket buffer
422 * @dev: associated net device
423 * @ptype: context
424 * @olddev: last device
425 *
426 * This function receives the packet and builds FC frame and passes it up
427 */
428 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
429 struct packet_type *ptype, struct net_device *olddev)
430 {
431 struct fc_lport *lport;
432 struct bnx2fc_interface *interface;
433 struct fcoe_ctlr *ctlr;
434 struct fc_frame_header *fh;
435 struct fcoe_rcv_info *fr;
436 struct fcoe_percpu_s *bg;
437 struct sk_buff *tmp_skb;
438 unsigned short oxid;
439
440 interface = container_of(ptype, struct bnx2fc_interface,
441 fcoe_packet_type);
442 ctlr = bnx2fc_to_ctlr(interface);
443 lport = ctlr->lp;
444
445 if (unlikely(lport == NULL)) {
446 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
447 goto err;
448 }
449
450 tmp_skb = skb_share_check(skb, GFP_ATOMIC);
451 if (!tmp_skb)
452 goto err;
453
454 skb = tmp_skb;
455
456 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
457 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
458 goto err;
459 }
460
461 /*
462 * Check for minimum frame length, and make sure required FCoE
463 * and FC headers are pulled into the linear data area.
464 */
465 if (unlikely((skb->len < FCOE_MIN_FRAME) ||
466 !pskb_may_pull(skb, FCOE_HEADER_LEN)))
467 goto err;
468
469 skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
470 fh = (struct fc_frame_header *) skb_transport_header(skb);
471
472 oxid = ntohs(fh->fh_ox_id);
473
474 fr = fcoe_dev_from_skb(skb);
475 fr->fr_dev = lport;
476
477 bg = &bnx2fc_global;
478 spin_lock(&bg->fcoe_rx_list.lock);
479
480 __skb_queue_tail(&bg->fcoe_rx_list, skb);
481 if (bg->fcoe_rx_list.qlen == 1)
482 wake_up_process(bg->kthread);
483
484 spin_unlock(&bg->fcoe_rx_list.lock);
485
486 return 0;
487 err:
488 kfree_skb(skb);
489 return -1;
490 }
491
492 static int bnx2fc_l2_rcv_thread(void *arg)
493 {
494 struct fcoe_percpu_s *bg = arg;
495 struct sk_buff *skb;
496
497 set_user_nice(current, MIN_NICE);
498 set_current_state(TASK_INTERRUPTIBLE);
499 while (!kthread_should_stop()) {
500 schedule();
501 spin_lock_bh(&bg->fcoe_rx_list.lock);
502 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
503 spin_unlock_bh(&bg->fcoe_rx_list.lock);
504 bnx2fc_recv_frame(skb);
505 spin_lock_bh(&bg->fcoe_rx_list.lock);
506 }
507 __set_current_state(TASK_INTERRUPTIBLE);
508 spin_unlock_bh(&bg->fcoe_rx_list.lock);
509 }
510 __set_current_state(TASK_RUNNING);
511 return 0;
512 }
513
514
515 static void bnx2fc_recv_frame(struct sk_buff *skb)
516 {
517 u32 fr_len;
518 struct fc_lport *lport;
519 struct fcoe_rcv_info *fr;
520 struct fc_stats *stats;
521 struct fc_frame_header *fh;
522 struct fcoe_crc_eof crc_eof;
523 struct fc_frame *fp;
524 struct fc_lport *vn_port;
525 struct fcoe_port *port;
526 u8 *mac = NULL;
527 u8 *dest_mac = NULL;
528 struct fcoe_hdr *hp;
529
530 fr = fcoe_dev_from_skb(skb);
531 lport = fr->fr_dev;
532 if (unlikely(lport == NULL)) {
533 printk(KERN_ERR PFX "Invalid lport struct\n");
534 kfree_skb(skb);
535 return;
536 }
537
538 if (skb_is_nonlinear(skb))
539 skb_linearize(skb);
540 mac = eth_hdr(skb)->h_source;
541 dest_mac = eth_hdr(skb)->h_dest;
542
543 /* Pull the header */
544 hp = (struct fcoe_hdr *) skb_network_header(skb);
545 fh = (struct fc_frame_header *) skb_transport_header(skb);
546 skb_pull(skb, sizeof(struct fcoe_hdr));
547 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
548
549 fp = (struct fc_frame *)skb;
550 fc_frame_init(fp);
551 fr_dev(fp) = lport;
552 fr_sof(fp) = hp->fcoe_sof;
553 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
554 kfree_skb(skb);
555 return;
556 }
557 fr_eof(fp) = crc_eof.fcoe_eof;
558 fr_crc(fp) = crc_eof.fcoe_crc32;
559 if (pskb_trim(skb, fr_len)) {
560 kfree_skb(skb);
561 return;
562 }
563
564 fh = fc_frame_header_get(fp);
565
566 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
567 if (vn_port) {
568 port = lport_priv(vn_port);
569 if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
570 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
571 kfree_skb(skb);
572 return;
573 }
574 }
575 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
576 fh->fh_type == FC_TYPE_FCP) {
577 /* Drop FCP data. We dont this in L2 path */
578 kfree_skb(skb);
579 return;
580 }
581 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
582 fh->fh_type == FC_TYPE_ELS) {
583 switch (fc_frame_payload_op(fp)) {
584 case ELS_LOGO:
585 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
586 /* drop non-FIP LOGO */
587 kfree_skb(skb);
588 return;
589 }
590 break;
591 }
592 }
593
594 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
595 /* Drop incoming ABTS */
596 kfree_skb(skb);
597 return;
598 }
599
600 stats = per_cpu_ptr(lport->stats, smp_processor_id());
601 stats->RxFrames++;
602 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
603
604 if (le32_to_cpu(fr_crc(fp)) !=
605 ~crc32(~0, skb->data, fr_len)) {
606 if (stats->InvalidCRCCount < 5)
607 printk(KERN_WARNING PFX "dropping frame with "
608 "CRC error\n");
609 stats->InvalidCRCCount++;
610 kfree_skb(skb);
611 return;
612 }
613 fc_exch_recv(lport, fp);
614 }
615
616 /**
617 * bnx2fc_percpu_io_thread - thread per cpu for ios
618 *
619 * @arg: ptr to bnx2fc_percpu_info structure
620 */
621 static int bnx2fc_percpu_io_thread(void *arg)
622 {
623 struct bnx2fc_percpu_s *p = arg;
624 struct bnx2fc_work *work, *tmp;
625 LIST_HEAD(work_list);
626
627 set_user_nice(current, MIN_NICE);
628 set_current_state(TASK_INTERRUPTIBLE);
629 while (!kthread_should_stop()) {
630 schedule();
631 spin_lock_bh(&p->fp_work_lock);
632 while (!list_empty(&p->work_list)) {
633 list_splice_init(&p->work_list, &work_list);
634 spin_unlock_bh(&p->fp_work_lock);
635
636 list_for_each_entry_safe(work, tmp, &work_list, list) {
637 list_del_init(&work->list);
638 bnx2fc_process_cq_compl(work->tgt, work->wqe);
639 kfree(work);
640 }
641
642 spin_lock_bh(&p->fp_work_lock);
643 }
644 __set_current_state(TASK_INTERRUPTIBLE);
645 spin_unlock_bh(&p->fp_work_lock);
646 }
647 __set_current_state(TASK_RUNNING);
648
649 return 0;
650 }
651
652 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
653 {
654 struct fc_host_statistics *bnx2fc_stats;
655 struct fc_lport *lport = shost_priv(shost);
656 struct fcoe_port *port = lport_priv(lport);
657 struct bnx2fc_interface *interface = port->priv;
658 struct bnx2fc_hba *hba = interface->hba;
659 struct fcoe_statistics_params *fw_stats;
660 int rc = 0;
661
662 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
663 if (!fw_stats)
664 return NULL;
665
666 bnx2fc_stats = fc_get_host_stats(shost);
667
668 init_completion(&hba->stat_req_done);
669 if (bnx2fc_send_stat_req(hba))
670 return bnx2fc_stats;
671 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
672 if (!rc) {
673 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
674 return bnx2fc_stats;
675 }
676 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
677 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
678 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
679 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
680 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
681 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
682 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
683 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
684 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
685 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
686
687 bnx2fc_stats->dumped_frames = 0;
688 bnx2fc_stats->lip_count = 0;
689 bnx2fc_stats->nos_count = 0;
690 bnx2fc_stats->loss_of_sync_count = 0;
691 bnx2fc_stats->loss_of_signal_count = 0;
692 bnx2fc_stats->prim_seq_protocol_err_count = 0;
693
694 memcpy(&hba->prev_stats, hba->stats_buffer,
695 sizeof(struct fcoe_statistics_params));
696 return bnx2fc_stats;
697 }
698
699 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
700 {
701 struct fcoe_port *port = lport_priv(lport);
702 struct bnx2fc_interface *interface = port->priv;
703 struct bnx2fc_hba *hba = interface->hba;
704 struct Scsi_Host *shost = lport->host;
705 int rc = 0;
706
707 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
708 shost->max_lun = bnx2fc_max_luns;
709 shost->max_id = BNX2FC_MAX_FCP_TGT;
710 shost->max_channel = 0;
711 if (lport->vport)
712 shost->transportt = bnx2fc_vport_xport_template;
713 else
714 shost->transportt = bnx2fc_transport_template;
715
716 /* Add the new host to SCSI-ml */
717 rc = scsi_add_host(lport->host, dev);
718 if (rc) {
719 printk(KERN_ERR PFX "Error on scsi_add_host\n");
720 return rc;
721 }
722 if (!lport->vport)
723 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
724 snprintf(fc_host_symbolic_name(lport->host), 256,
725 "%s (QLogic %s) v%s over %s",
726 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
727 interface->netdev->name);
728
729 return 0;
730 }
731
732 static int bnx2fc_link_ok(struct fc_lport *lport)
733 {
734 struct fcoe_port *port = lport_priv(lport);
735 struct bnx2fc_interface *interface = port->priv;
736 struct bnx2fc_hba *hba = interface->hba;
737 struct net_device *dev = hba->phys_dev;
738 int rc = 0;
739
740 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
741 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
742 else {
743 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
744 rc = -1;
745 }
746 return rc;
747 }
748
749 /**
750 * bnx2fc_get_link_state - get network link state
751 *
752 * @hba: adapter instance pointer
753 *
754 * updates adapter structure flag based on netdev state
755 */
756 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
757 {
758 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
759 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
760 else
761 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
762 }
763
764 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
765 {
766 struct bnx2fc_hba *hba;
767 struct bnx2fc_interface *interface;
768 struct fcoe_ctlr *ctlr;
769 struct fcoe_port *port;
770 u64 wwnn, wwpn;
771
772 port = lport_priv(lport);
773 interface = port->priv;
774 ctlr = bnx2fc_to_ctlr(interface);
775 hba = interface->hba;
776
777 /* require support for get_pauseparam ethtool op. */
778 if (!hba->phys_dev->ethtool_ops ||
779 !hba->phys_dev->ethtool_ops->get_pauseparam)
780 return -EOPNOTSUPP;
781
782 if (fc_set_mfs(lport, BNX2FC_MFS))
783 return -EINVAL;
784
785 skb_queue_head_init(&port->fcoe_pending_queue);
786 port->fcoe_pending_queue_active = 0;
787 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
788
789 fcoe_link_speed_update(lport);
790
791 if (!lport->vport) {
792 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
793 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
794 1, 0);
795 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
796 fc_set_wwnn(lport, wwnn);
797
798 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
799 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
800 2, 0);
801
802 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
803 fc_set_wwpn(lport, wwpn);
804 }
805
806 return 0;
807 }
808
809 static void bnx2fc_destroy_timer(unsigned long data)
810 {
811 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
812
813 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
814 "Destroy compl not received!!\n");
815 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
816 wake_up_interruptible(&hba->destroy_wait);
817 }
818
819 /**
820 * bnx2fc_indicate_netevent - Generic netdev event handler
821 *
822 * @context: adapter structure pointer
823 * @event: event type
824 * @vlan_id: vlan id - associated vlan id with this event
825 *
826 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
827 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
828 */
829 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
830 u16 vlan_id)
831 {
832 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
833 struct fcoe_ctlr_device *cdev;
834 struct fc_lport *lport;
835 struct fc_lport *vport;
836 struct bnx2fc_interface *interface, *tmp;
837 struct fcoe_ctlr *ctlr;
838 int wait_for_upload = 0;
839 u32 link_possible = 1;
840
841 if (vlan_id != 0 && event != NETDEV_UNREGISTER)
842 return;
843
844 switch (event) {
845 case NETDEV_UP:
846 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
847 printk(KERN_ERR "indicate_netevent: "\
848 "hba is not UP!!\n");
849 break;
850
851 case NETDEV_DOWN:
852 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
853 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
854 link_possible = 0;
855 break;
856
857 case NETDEV_GOING_DOWN:
858 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
859 link_possible = 0;
860 break;
861
862 case NETDEV_CHANGE:
863 break;
864
865 case NETDEV_UNREGISTER:
866 if (!vlan_id)
867 return;
868 mutex_lock(&bnx2fc_dev_lock);
869 list_for_each_entry_safe(interface, tmp, &if_list, list) {
870 if (interface->hba == hba &&
871 interface->vlan_id == (vlan_id & VLAN_VID_MASK))
872 __bnx2fc_destroy(interface);
873 }
874 mutex_unlock(&bnx2fc_dev_lock);
875
876 /* Ensure ALL destroy work has been completed before return */
877 flush_workqueue(bnx2fc_wq);
878 return;
879
880 default:
881 return;
882 }
883
884 mutex_lock(&bnx2fc_dev_lock);
885 list_for_each_entry(interface, &if_list, list) {
886
887 if (interface->hba != hba)
888 continue;
889
890 ctlr = bnx2fc_to_ctlr(interface);
891 lport = ctlr->lp;
892 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
893 interface->netdev->name, event);
894
895 fcoe_link_speed_update(lport);
896
897 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
898
899 if (link_possible && !bnx2fc_link_ok(lport)) {
900 switch (cdev->enabled) {
901 case FCOE_CTLR_DISABLED:
902 pr_info("Link up while interface is disabled.\n");
903 break;
904 case FCOE_CTLR_ENABLED:
905 case FCOE_CTLR_UNUSED:
906 /* Reset max recv frame size to default */
907 fc_set_mfs(lport, BNX2FC_MFS);
908 /*
909 * ctlr link up will only be handled during
910 * enable to avoid sending discovery
911 * solicitation on a stale vlan
912 */
913 if (interface->enabled)
914 fcoe_ctlr_link_up(ctlr);
915 };
916 } else if (fcoe_ctlr_link_down(ctlr)) {
917 switch (cdev->enabled) {
918 case FCOE_CTLR_DISABLED:
919 pr_info("Link down while interface is disabled.\n");
920 break;
921 case FCOE_CTLR_ENABLED:
922 case FCOE_CTLR_UNUSED:
923 mutex_lock(&lport->lp_mutex);
924 list_for_each_entry(vport, &lport->vports, list)
925 fc_host_port_type(vport->host) =
926 FC_PORTTYPE_UNKNOWN;
927 mutex_unlock(&lport->lp_mutex);
928 fc_host_port_type(lport->host) =
929 FC_PORTTYPE_UNKNOWN;
930 per_cpu_ptr(lport->stats,
931 get_cpu())->LinkFailureCount++;
932 put_cpu();
933 fcoe_clean_pending_queue(lport);
934 wait_for_upload = 1;
935 };
936 }
937 }
938 mutex_unlock(&bnx2fc_dev_lock);
939
940 if (wait_for_upload) {
941 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
942 init_waitqueue_head(&hba->shutdown_wait);
943 BNX2FC_MISC_DBG("indicate_netevent "
944 "num_ofld_sess = %d\n",
945 hba->num_ofld_sess);
946 hba->wait_for_link_down = 1;
947 wait_event_interruptible(hba->shutdown_wait,
948 (hba->num_ofld_sess == 0));
949 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
950 hba->num_ofld_sess);
951 hba->wait_for_link_down = 0;
952
953 if (signal_pending(current))
954 flush_signals(current);
955 }
956 }
957
958 static int bnx2fc_libfc_config(struct fc_lport *lport)
959 {
960
961 /* Set the function pointers set by bnx2fc driver */
962 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
963 sizeof(struct libfc_function_template));
964 fc_elsct_init(lport);
965 fc_exch_init(lport);
966 fc_disc_init(lport);
967 fc_disc_config(lport, lport);
968 return 0;
969 }
970
971 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
972 {
973 int fcoe_min_xid, fcoe_max_xid;
974
975 fcoe_min_xid = hba->max_xid + 1;
976 if (nr_cpu_ids <= 2)
977 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
978 else
979 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
980 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
981 fcoe_max_xid, NULL)) {
982 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
983 return -ENOMEM;
984 }
985
986 return 0;
987 }
988
989 static int bnx2fc_lport_config(struct fc_lport *lport)
990 {
991 lport->link_up = 0;
992 lport->qfull = 0;
993 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
994 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
995 lport->e_d_tov = 2 * 1000;
996 lport->r_a_tov = 10 * 1000;
997
998 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
999 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1000 lport->does_npiv = 1;
1001
1002 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1003 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1004
1005 /* alloc stats structure */
1006 if (fc_lport_init_stats(lport))
1007 return -ENOMEM;
1008
1009 /* Finish fc_lport configuration */
1010 fc_lport_config(lport);
1011
1012 return 0;
1013 }
1014
1015 /**
1016 * bnx2fc_fip_recv - handle a received FIP frame.
1017 *
1018 * @skb: the received skb
1019 * @dev: associated &net_device
1020 * @ptype: the &packet_type structure which was used to register this handler.
1021 * @orig_dev: original receive &net_device, in case @ dev is a bond.
1022 *
1023 * Returns: 0 for success
1024 */
1025 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1026 struct packet_type *ptype,
1027 struct net_device *orig_dev)
1028 {
1029 struct bnx2fc_interface *interface;
1030 struct fcoe_ctlr *ctlr;
1031 interface = container_of(ptype, struct bnx2fc_interface,
1032 fip_packet_type);
1033 ctlr = bnx2fc_to_ctlr(interface);
1034 fcoe_ctlr_recv(ctlr, skb);
1035 return 0;
1036 }
1037
1038 /**
1039 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1040 *
1041 * @fip: FCoE controller.
1042 * @old: Unicast MAC address to delete if the MAC is non-zero.
1043 * @new: Unicast MAC address to add.
1044 *
1045 * Remove any previously-set unicast MAC filter.
1046 * Add secondary FCoE MAC address filter for our OUI.
1047 */
1048 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1049 {
1050 struct fcoe_port *port = lport_priv(lport);
1051
1052 memcpy(port->data_src_addr, addr, ETH_ALEN);
1053 }
1054
1055 /**
1056 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1057 *
1058 * @lport: libfc port
1059 */
1060 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1061 {
1062 struct fcoe_port *port;
1063
1064 port = (struct fcoe_port *)lport_priv(lport);
1065 return port->data_src_addr;
1066 }
1067
1068 /**
1069 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1070 *
1071 * @fip: FCoE controller.
1072 * @skb: FIP Packet.
1073 */
1074 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1075 {
1076 struct fip_header *fiph;
1077 struct ethhdr *eth_hdr;
1078 u16 op;
1079 u8 sub;
1080
1081 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
1082 eth_hdr = (struct ethhdr *)skb_mac_header(skb);
1083 op = ntohs(fiph->fip_op);
1084 sub = fiph->fip_subcode;
1085
1086 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
1087 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
1088 eth_hdr->h_source, eth_hdr->h_dest);
1089
1090 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1091 dev_queue_xmit(skb);
1092 }
1093
1094 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1095 {
1096 struct Scsi_Host *shost = vport_to_shost(vport);
1097 struct fc_lport *n_port = shost_priv(shost);
1098 struct fcoe_port *port = lport_priv(n_port);
1099 struct bnx2fc_interface *interface = port->priv;
1100 struct net_device *netdev = interface->netdev;
1101 struct fc_lport *vn_port;
1102 int rc;
1103 char buf[32];
1104
1105 rc = fcoe_validate_vport_create(vport);
1106 if (rc) {
1107 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1108 printk(KERN_ERR PFX "Failed to create vport, "
1109 "WWPN (0x%s) already exists\n",
1110 buf);
1111 return rc;
1112 }
1113
1114 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1115 printk(KERN_ERR PFX "vn ports cannot be created on"
1116 "this interface\n");
1117 return -EIO;
1118 }
1119 rtnl_lock();
1120 mutex_lock(&bnx2fc_dev_lock);
1121 vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1122 mutex_unlock(&bnx2fc_dev_lock);
1123 rtnl_unlock();
1124
1125 if (!vn_port) {
1126 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1127 netdev->name);
1128 return -EIO;
1129 }
1130
1131 if (bnx2fc_devloss_tmo)
1132 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
1133
1134 if (disabled) {
1135 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1136 } else {
1137 vn_port->boot_time = jiffies;
1138 fc_lport_init(vn_port);
1139 fc_fabric_login(vn_port);
1140 fc_vport_setlink(vn_port);
1141 }
1142 return 0;
1143 }
1144
1145 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1146 {
1147 struct bnx2fc_lport *blport, *tmp;
1148
1149 spin_lock_bh(&hba->hba_lock);
1150 list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1151 if (blport->lport == lport) {
1152 list_del(&blport->list);
1153 kfree(blport);
1154 }
1155 }
1156 spin_unlock_bh(&hba->hba_lock);
1157 }
1158
1159 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1160 {
1161 struct Scsi_Host *shost = vport_to_shost(vport);
1162 struct fc_lport *n_port = shost_priv(shost);
1163 struct fc_lport *vn_port = vport->dd_data;
1164 struct fcoe_port *port = lport_priv(vn_port);
1165 struct bnx2fc_interface *interface = port->priv;
1166 struct fc_lport *v_port;
1167 bool found = false;
1168
1169 mutex_lock(&n_port->lp_mutex);
1170 list_for_each_entry(v_port, &n_port->vports, list)
1171 if (v_port->vport == vport) {
1172 found = true;
1173 break;
1174 }
1175
1176 if (!found) {
1177 mutex_unlock(&n_port->lp_mutex);
1178 return -ENOENT;
1179 }
1180 list_del(&vn_port->list);
1181 mutex_unlock(&n_port->lp_mutex);
1182 bnx2fc_free_vport(interface->hba, port->lport);
1183 bnx2fc_port_shutdown(port->lport);
1184 bnx2fc_interface_put(interface);
1185 queue_work(bnx2fc_wq, &port->destroy_work);
1186 return 0;
1187 }
1188
1189 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1190 {
1191 struct fc_lport *lport = vport->dd_data;
1192
1193 if (disable) {
1194 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1195 fc_fabric_logoff(lport);
1196 } else {
1197 lport->boot_time = jiffies;
1198 fc_fabric_login(lport);
1199 fc_vport_setlink(lport);
1200 }
1201 return 0;
1202 }
1203
1204
1205 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1206 {
1207 struct net_device *netdev = interface->netdev;
1208 struct net_device *physdev = interface->hba->phys_dev;
1209 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1210 struct netdev_hw_addr *ha;
1211 int sel_san_mac = 0;
1212
1213 /* setup Source MAC Address */
1214 rcu_read_lock();
1215 for_each_dev_addr(physdev, ha) {
1216 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1217 ha->type);
1218 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1219 ha->addr[1], ha->addr[2], ha->addr[3],
1220 ha->addr[4], ha->addr[5]);
1221
1222 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1223 (is_valid_ether_addr(ha->addr))) {
1224 memcpy(ctlr->ctl_src_addr, ha->addr,
1225 ETH_ALEN);
1226 sel_san_mac = 1;
1227 BNX2FC_MISC_DBG("Found SAN MAC\n");
1228 }
1229 }
1230 rcu_read_unlock();
1231
1232 if (!sel_san_mac)
1233 return -ENODEV;
1234
1235 interface->fip_packet_type.func = bnx2fc_fip_recv;
1236 interface->fip_packet_type.type = htons(ETH_P_FIP);
1237 interface->fip_packet_type.dev = netdev;
1238 dev_add_pack(&interface->fip_packet_type);
1239
1240 interface->fcoe_packet_type.func = bnx2fc_rcv;
1241 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1242 interface->fcoe_packet_type.dev = netdev;
1243 dev_add_pack(&interface->fcoe_packet_type);
1244
1245 return 0;
1246 }
1247
1248 static int bnx2fc_attach_transport(void)
1249 {
1250 bnx2fc_transport_template =
1251 fc_attach_transport(&bnx2fc_transport_function);
1252
1253 if (bnx2fc_transport_template == NULL) {
1254 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1255 return -ENODEV;
1256 }
1257
1258 bnx2fc_vport_xport_template =
1259 fc_attach_transport(&bnx2fc_vport_xport_function);
1260 if (bnx2fc_vport_xport_template == NULL) {
1261 printk(KERN_ERR PFX
1262 "Failed to attach FC transport for vport\n");
1263 fc_release_transport(bnx2fc_transport_template);
1264 bnx2fc_transport_template = NULL;
1265 return -ENODEV;
1266 }
1267 return 0;
1268 }
1269 static void bnx2fc_release_transport(void)
1270 {
1271 fc_release_transport(bnx2fc_transport_template);
1272 fc_release_transport(bnx2fc_vport_xport_template);
1273 bnx2fc_transport_template = NULL;
1274 bnx2fc_vport_xport_template = NULL;
1275 }
1276
1277 static void bnx2fc_interface_release(struct kref *kref)
1278 {
1279 struct fcoe_ctlr_device *ctlr_dev;
1280 struct bnx2fc_interface *interface;
1281 struct fcoe_ctlr *ctlr;
1282 struct net_device *netdev;
1283
1284 interface = container_of(kref, struct bnx2fc_interface, kref);
1285 BNX2FC_MISC_DBG("Interface is being released\n");
1286
1287 ctlr = bnx2fc_to_ctlr(interface);
1288 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1289 netdev = interface->netdev;
1290
1291 /* tear-down FIP controller */
1292 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1293 fcoe_ctlr_destroy(ctlr);
1294
1295 fcoe_ctlr_device_delete(ctlr_dev);
1296
1297 dev_put(netdev);
1298 module_put(THIS_MODULE);
1299 }
1300
1301 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1302 {
1303 kref_get(&interface->kref);
1304 }
1305
1306 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1307 {
1308 kref_put(&interface->kref, bnx2fc_interface_release);
1309 }
1310 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1311 {
1312 /* Free the command manager */
1313 if (hba->cmd_mgr) {
1314 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1315 hba->cmd_mgr = NULL;
1316 }
1317 kfree(hba->tgt_ofld_list);
1318 bnx2fc_unbind_pcidev(hba);
1319 kfree(hba);
1320 }
1321
1322 /**
1323 * bnx2fc_hba_create - create a new bnx2fc hba
1324 *
1325 * @cnic: pointer to cnic device
1326 *
1327 * Creates a new FCoE hba on the given device.
1328 *
1329 */
1330 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1331 {
1332 struct bnx2fc_hba *hba;
1333 struct fcoe_capabilities *fcoe_cap;
1334 int rc;
1335
1336 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1337 if (!hba) {
1338 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1339 return NULL;
1340 }
1341 spin_lock_init(&hba->hba_lock);
1342 mutex_init(&hba->hba_mutex);
1343
1344 hba->cnic = cnic;
1345
1346 hba->max_tasks = cnic->max_fcoe_exchanges;
1347 hba->elstm_xids = (hba->max_tasks / 2);
1348 hba->max_outstanding_cmds = hba->elstm_xids;
1349 hba->max_xid = (hba->max_tasks - 1);
1350
1351 rc = bnx2fc_bind_pcidev(hba);
1352 if (rc) {
1353 printk(KERN_ERR PFX "create_adapter: bind error\n");
1354 goto bind_err;
1355 }
1356 hba->phys_dev = cnic->netdev;
1357 hba->next_conn_id = 0;
1358
1359 hba->tgt_ofld_list =
1360 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1361 GFP_KERNEL);
1362 if (!hba->tgt_ofld_list) {
1363 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1364 goto tgtofld_err;
1365 }
1366
1367 hba->num_ofld_sess = 0;
1368
1369 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1370 if (!hba->cmd_mgr) {
1371 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1372 goto cmgr_err;
1373 }
1374 fcoe_cap = &hba->fcoe_cap;
1375
1376 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1377 FCOE_IOS_PER_CONNECTION_SHIFT;
1378 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1379 FCOE_LOGINS_PER_PORT_SHIFT;
1380 fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1381 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1382 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1383 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1384 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1385 FCOE_TARGETS_SUPPORTED_SHIFT;
1386 fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1387 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1388 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1389
1390 init_waitqueue_head(&hba->shutdown_wait);
1391 init_waitqueue_head(&hba->destroy_wait);
1392 INIT_LIST_HEAD(&hba->vports);
1393
1394 return hba;
1395
1396 cmgr_err:
1397 kfree(hba->tgt_ofld_list);
1398 tgtofld_err:
1399 bnx2fc_unbind_pcidev(hba);
1400 bind_err:
1401 kfree(hba);
1402 return NULL;
1403 }
1404
1405 static struct bnx2fc_interface *
1406 bnx2fc_interface_create(struct bnx2fc_hba *hba,
1407 struct net_device *netdev,
1408 enum fip_state fip_mode)
1409 {
1410 struct fcoe_ctlr_device *ctlr_dev;
1411 struct bnx2fc_interface *interface;
1412 struct fcoe_ctlr *ctlr;
1413 int size;
1414 int rc = 0;
1415
1416 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1417 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1418 size);
1419 if (!ctlr_dev) {
1420 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1421 return NULL;
1422 }
1423 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1424 ctlr->cdev = ctlr_dev;
1425 interface = fcoe_ctlr_priv(ctlr);
1426 dev_hold(netdev);
1427 kref_init(&interface->kref);
1428 interface->hba = hba;
1429 interface->netdev = netdev;
1430
1431 /* Initialize FIP */
1432 fcoe_ctlr_init(ctlr, fip_mode);
1433 ctlr->send = bnx2fc_fip_send;
1434 ctlr->update_mac = bnx2fc_update_src_mac;
1435 ctlr->get_src_addr = bnx2fc_get_src_mac;
1436 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1437
1438 rc = bnx2fc_interface_setup(interface);
1439 if (!rc)
1440 return interface;
1441
1442 fcoe_ctlr_destroy(ctlr);
1443 dev_put(netdev);
1444 fcoe_ctlr_device_delete(ctlr_dev);
1445 return NULL;
1446 }
1447
1448 /**
1449 * bnx2fc_if_create - Create FCoE instance on a given interface
1450 *
1451 * @interface: FCoE interface to create a local port on
1452 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1453 * @npiv: Indicates if the port is vport or not
1454 *
1455 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1456 *
1457 * Returns: Allocated fc_lport or an error pointer
1458 */
1459 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1460 struct device *parent, int npiv)
1461 {
1462 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1463 struct fc_lport *lport, *n_port;
1464 struct fcoe_port *port;
1465 struct Scsi_Host *shost;
1466 struct fc_vport *vport = dev_to_vport(parent);
1467 struct bnx2fc_lport *blport;
1468 struct bnx2fc_hba *hba = interface->hba;
1469 int rc = 0;
1470
1471 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1472 if (!blport) {
1473 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1474 return NULL;
1475 }
1476
1477 /* Allocate Scsi_Host structure */
1478 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1479 if (!npiv)
1480 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1481 else
1482 lport = libfc_vport_create(vport, sizeof(*port));
1483
1484 if (!lport) {
1485 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1486 goto free_blport;
1487 }
1488 shost = lport->host;
1489 port = lport_priv(lport);
1490 port->lport = lport;
1491 port->priv = interface;
1492 port->get_netdev = bnx2fc_netdev;
1493 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1494
1495 /* Configure fcoe_port */
1496 rc = bnx2fc_lport_config(lport);
1497 if (rc)
1498 goto lp_config_err;
1499
1500 if (npiv) {
1501 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1502 vport->node_name, vport->port_name);
1503 fc_set_wwnn(lport, vport->node_name);
1504 fc_set_wwpn(lport, vport->port_name);
1505 }
1506 /* Configure netdev and networking properties of the lport */
1507 rc = bnx2fc_net_config(lport, interface->netdev);
1508 if (rc) {
1509 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1510 goto lp_config_err;
1511 }
1512
1513 rc = bnx2fc_shost_config(lport, parent);
1514 if (rc) {
1515 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1516 interface->netdev->name);
1517 goto lp_config_err;
1518 }
1519
1520 /* Initialize the libfc library */
1521 rc = bnx2fc_libfc_config(lport);
1522 if (rc) {
1523 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1524 goto shost_err;
1525 }
1526 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1527
1528 if (bnx2fc_devloss_tmo)
1529 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo;
1530
1531 /* Allocate exchange manager */
1532 if (!npiv)
1533 rc = bnx2fc_em_config(lport, hba);
1534 else {
1535 shost = vport_to_shost(vport);
1536 n_port = shost_priv(shost);
1537 rc = fc_exch_mgr_list_clone(n_port, lport);
1538 }
1539
1540 if (rc) {
1541 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1542 goto shost_err;
1543 }
1544
1545 bnx2fc_interface_get(interface);
1546
1547 spin_lock_bh(&hba->hba_lock);
1548 blport->lport = lport;
1549 list_add_tail(&blport->list, &hba->vports);
1550 spin_unlock_bh(&hba->hba_lock);
1551
1552 return lport;
1553
1554 shost_err:
1555 scsi_remove_host(shost);
1556 lp_config_err:
1557 scsi_host_put(lport->host);
1558 free_blport:
1559 kfree(blport);
1560 return NULL;
1561 }
1562
1563 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1564 {
1565 /* Dont listen for Ethernet packets anymore */
1566 __dev_remove_pack(&interface->fcoe_packet_type);
1567 __dev_remove_pack(&interface->fip_packet_type);
1568 synchronize_net();
1569 }
1570
1571 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1572 {
1573 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1574 struct fc_lport *lport = ctlr->lp;
1575 struct fcoe_port *port = lport_priv(lport);
1576 struct bnx2fc_hba *hba = interface->hba;
1577
1578 /* Stop the transmit retry timer */
1579 del_timer_sync(&port->timer);
1580
1581 /* Free existing transmit skbs */
1582 fcoe_clean_pending_queue(lport);
1583
1584 bnx2fc_net_cleanup(interface);
1585
1586 bnx2fc_free_vport(hba, lport);
1587 }
1588
1589 static void bnx2fc_if_destroy(struct fc_lport *lport)
1590 {
1591
1592 /* Free queued packets for the receive thread */
1593 bnx2fc_clean_rx_queue(lport);
1594
1595 /* Detach from scsi-ml */
1596 fc_remove_host(lport->host);
1597 scsi_remove_host(lport->host);
1598
1599 /*
1600 * Note that only the physical lport will have the exchange manager.
1601 * for vports, this function is NOP
1602 */
1603 fc_exch_mgr_free(lport);
1604
1605 /* Free memory used by statistical counters */
1606 fc_lport_free_stats(lport);
1607
1608 /* Release Scsi_Host */
1609 scsi_host_put(lport->host);
1610 }
1611
1612 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1613 {
1614 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1615 struct fc_lport *lport = ctlr->lp;
1616 struct fcoe_port *port = lport_priv(lport);
1617
1618 bnx2fc_interface_cleanup(interface);
1619 bnx2fc_stop(interface);
1620 list_del(&interface->list);
1621 bnx2fc_interface_put(interface);
1622 queue_work(bnx2fc_wq, &port->destroy_work);
1623 }
1624
1625 /**
1626 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1627 *
1628 * @buffer: The name of the Ethernet interface to be destroyed
1629 * @kp: The associated kernel parameter
1630 *
1631 * Called from sysfs.
1632 *
1633 * Returns: 0 for success
1634 */
1635 static int bnx2fc_destroy(struct net_device *netdev)
1636 {
1637 struct bnx2fc_interface *interface = NULL;
1638 struct workqueue_struct *timer_work_queue;
1639 struct fcoe_ctlr *ctlr;
1640 int rc = 0;
1641
1642 rtnl_lock();
1643 mutex_lock(&bnx2fc_dev_lock);
1644
1645 interface = bnx2fc_interface_lookup(netdev);
1646 ctlr = bnx2fc_to_ctlr(interface);
1647 if (!interface || !ctlr->lp) {
1648 rc = -ENODEV;
1649 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1650 goto netdev_err;
1651 }
1652
1653 timer_work_queue = interface->timer_work_queue;
1654 __bnx2fc_destroy(interface);
1655 destroy_workqueue(timer_work_queue);
1656
1657 netdev_err:
1658 mutex_unlock(&bnx2fc_dev_lock);
1659 rtnl_unlock();
1660 return rc;
1661 }
1662
1663 static void bnx2fc_destroy_work(struct work_struct *work)
1664 {
1665 struct fcoe_port *port;
1666 struct fc_lport *lport;
1667
1668 port = container_of(work, struct fcoe_port, destroy_work);
1669 lport = port->lport;
1670
1671 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1672
1673 bnx2fc_if_destroy(lport);
1674 }
1675
1676 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1677 {
1678 bnx2fc_free_fw_resc(hba);
1679 bnx2fc_free_task_ctx(hba);
1680 }
1681
1682 /**
1683 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1684 * pci structure
1685 *
1686 * @hba: Adapter instance
1687 */
1688 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1689 {
1690 if (bnx2fc_setup_task_ctx(hba))
1691 goto mem_err;
1692
1693 if (bnx2fc_setup_fw_resc(hba))
1694 goto mem_err;
1695
1696 return 0;
1697 mem_err:
1698 bnx2fc_unbind_adapter_devices(hba);
1699 return -ENOMEM;
1700 }
1701
1702 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1703 {
1704 struct cnic_dev *cnic;
1705 struct pci_dev *pdev;
1706
1707 if (!hba->cnic) {
1708 printk(KERN_ERR PFX "cnic is NULL\n");
1709 return -ENODEV;
1710 }
1711 cnic = hba->cnic;
1712 pdev = hba->pcidev = cnic->pcidev;
1713 if (!hba->pcidev)
1714 return -ENODEV;
1715
1716 switch (pdev->device) {
1717 case PCI_DEVICE_ID_NX2_57710:
1718 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1719 break;
1720 case PCI_DEVICE_ID_NX2_57711:
1721 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1722 break;
1723 case PCI_DEVICE_ID_NX2_57712:
1724 case PCI_DEVICE_ID_NX2_57712_MF:
1725 case PCI_DEVICE_ID_NX2_57712_VF:
1726 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1727 break;
1728 case PCI_DEVICE_ID_NX2_57800:
1729 case PCI_DEVICE_ID_NX2_57800_MF:
1730 case PCI_DEVICE_ID_NX2_57800_VF:
1731 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1732 break;
1733 case PCI_DEVICE_ID_NX2_57810:
1734 case PCI_DEVICE_ID_NX2_57810_MF:
1735 case PCI_DEVICE_ID_NX2_57810_VF:
1736 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1737 break;
1738 case PCI_DEVICE_ID_NX2_57840:
1739 case PCI_DEVICE_ID_NX2_57840_MF:
1740 case PCI_DEVICE_ID_NX2_57840_VF:
1741 case PCI_DEVICE_ID_NX2_57840_2_20:
1742 case PCI_DEVICE_ID_NX2_57840_4_10:
1743 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1744 break;
1745 default:
1746 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1747 break;
1748 }
1749 pci_dev_get(hba->pcidev);
1750 return 0;
1751 }
1752
1753 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1754 {
1755 if (hba->pcidev) {
1756 hba->chip_num[0] = '\0';
1757 pci_dev_put(hba->pcidev);
1758 }
1759 hba->pcidev = NULL;
1760 }
1761
1762 /**
1763 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1764 *
1765 * @handle: transport handle pointing to adapter struture
1766 */
1767 static int bnx2fc_ulp_get_stats(void *handle)
1768 {
1769 struct bnx2fc_hba *hba = handle;
1770 struct cnic_dev *cnic;
1771 struct fcoe_stats_info *stats_addr;
1772
1773 if (!hba)
1774 return -EINVAL;
1775
1776 cnic = hba->cnic;
1777 stats_addr = &cnic->stats_addr->fcoe_stat;
1778 if (!stats_addr)
1779 return -EINVAL;
1780
1781 strncpy(stats_addr->version, BNX2FC_VERSION,
1782 sizeof(stats_addr->version));
1783 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1784 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1785
1786 return 0;
1787 }
1788
1789
1790 /**
1791 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1792 *
1793 * @handle: transport handle pointing to adapter structure
1794 *
1795 * This function maps adapter structure to pcidev structure and initiates
1796 * firmware handshake to enable/initialize on-chip FCoE components.
1797 * This bnx2fc - cnic interface api callback is used after following
1798 * conditions are met -
1799 * a) underlying network interface is up (marked by event NETDEV_UP
1800 * from netdev
1801 * b) bnx2fc adatper structure is registered.
1802 */
1803 static void bnx2fc_ulp_start(void *handle)
1804 {
1805 struct bnx2fc_hba *hba = handle;
1806 struct bnx2fc_interface *interface;
1807 struct fcoe_ctlr *ctlr;
1808 struct fc_lport *lport;
1809
1810 mutex_lock(&bnx2fc_dev_lock);
1811
1812 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1813 bnx2fc_fw_init(hba);
1814
1815 BNX2FC_MISC_DBG("bnx2fc started.\n");
1816
1817 list_for_each_entry(interface, &if_list, list) {
1818 if (interface->hba == hba) {
1819 ctlr = bnx2fc_to_ctlr(interface);
1820 lport = ctlr->lp;
1821 /* Kick off Fabric discovery*/
1822 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1823 lport->tt.frame_send = bnx2fc_xmit;
1824 bnx2fc_start_disc(interface);
1825 }
1826 }
1827
1828 mutex_unlock(&bnx2fc_dev_lock);
1829 }
1830
1831 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1832 {
1833 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1834 fc_fabric_logoff(lport);
1835 fc_lport_destroy(lport);
1836 }
1837
1838 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1839 {
1840 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1841 struct fc_lport *lport;
1842 struct fc_lport *vport;
1843
1844 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1845 return;
1846
1847 lport = ctlr->lp;
1848 bnx2fc_port_shutdown(lport);
1849
1850 mutex_lock(&lport->lp_mutex);
1851 list_for_each_entry(vport, &lport->vports, list)
1852 fc_host_port_type(vport->host) =
1853 FC_PORTTYPE_UNKNOWN;
1854 mutex_unlock(&lport->lp_mutex);
1855 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1856 fcoe_ctlr_link_down(ctlr);
1857 fcoe_clean_pending_queue(lport);
1858 }
1859
1860 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1861 {
1862 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1863 int rc = -1;
1864 int i = HZ;
1865
1866 rc = bnx2fc_bind_adapter_devices(hba);
1867 if (rc) {
1868 printk(KERN_ALERT PFX
1869 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1870 goto err_out;
1871 }
1872
1873 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1874 if (rc) {
1875 printk(KERN_ALERT PFX
1876 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1877 goto err_unbind;
1878 }
1879
1880 /*
1881 * Wait until the adapter init message is complete, and adapter
1882 * state is UP.
1883 */
1884 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1885 msleep(BNX2FC_INIT_POLL_TIME);
1886
1887 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1888 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1889 "Ignoring...\n",
1890 hba->cnic->netdev->name);
1891 rc = -1;
1892 goto err_unbind;
1893 }
1894
1895
1896 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1897 return 0;
1898
1899 err_unbind:
1900 bnx2fc_unbind_adapter_devices(hba);
1901 err_out:
1902 return rc;
1903 }
1904
1905 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1906 {
1907 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1908 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1909 init_timer(&hba->destroy_timer);
1910 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1911 jiffies;
1912 hba->destroy_timer.function = bnx2fc_destroy_timer;
1913 hba->destroy_timer.data = (unsigned long)hba;
1914 add_timer(&hba->destroy_timer);
1915 wait_event_interruptible(hba->destroy_wait,
1916 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1917 &hba->flags));
1918 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1919 /* This should never happen */
1920 if (signal_pending(current))
1921 flush_signals(current);
1922
1923 del_timer_sync(&hba->destroy_timer);
1924 }
1925 bnx2fc_unbind_adapter_devices(hba);
1926 }
1927 }
1928
1929 /**
1930 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1931 *
1932 * @handle: transport handle pointing to adapter structure
1933 *
1934 * Driver checks if adapter is already in shutdown mode, if not start
1935 * the shutdown process.
1936 */
1937 static void bnx2fc_ulp_stop(void *handle)
1938 {
1939 struct bnx2fc_hba *hba = handle;
1940 struct bnx2fc_interface *interface;
1941
1942 printk(KERN_ERR "ULP_STOP\n");
1943
1944 mutex_lock(&bnx2fc_dev_lock);
1945 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1946 goto exit;
1947 list_for_each_entry(interface, &if_list, list) {
1948 if (interface->hba == hba)
1949 bnx2fc_stop(interface);
1950 }
1951 BUG_ON(hba->num_ofld_sess != 0);
1952
1953 mutex_lock(&hba->hba_mutex);
1954 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1955 clear_bit(ADAPTER_STATE_GOING_DOWN,
1956 &hba->adapter_state);
1957
1958 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1959 mutex_unlock(&hba->hba_mutex);
1960
1961 bnx2fc_fw_destroy(hba);
1962 exit:
1963 mutex_unlock(&bnx2fc_dev_lock);
1964 }
1965
1966 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1967 {
1968 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1969 struct fc_lport *lport;
1970 int wait_cnt = 0;
1971
1972 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1973 /* Kick off FIP/FLOGI */
1974 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1975 printk(KERN_ERR PFX "Init not done yet\n");
1976 return;
1977 }
1978
1979 lport = ctlr->lp;
1980 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1981
1982 if (!bnx2fc_link_ok(lport) && interface->enabled) {
1983 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1984 fcoe_ctlr_link_up(ctlr);
1985 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1986 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1987 }
1988
1989 /* wait for the FCF to be selected before issuing FLOGI */
1990 while (!ctlr->sel_fcf) {
1991 msleep(250);
1992 /* give up after 3 secs */
1993 if (++wait_cnt > 12)
1994 break;
1995 }
1996
1997 /* Reset max receive frame size to default */
1998 if (fc_set_mfs(lport, BNX2FC_MFS))
1999 return;
2000
2001 fc_lport_init(lport);
2002 fc_fabric_login(lport);
2003 }
2004
2005
2006 /**
2007 * bnx2fc_ulp_init - Initialize an adapter instance
2008 *
2009 * @dev : cnic device handle
2010 * Called from cnic_register_driver() context to initialize all
2011 * enumerated cnic devices. This routine allocates adapter structure
2012 * and other device specific resources.
2013 */
2014 static void bnx2fc_ulp_init(struct cnic_dev *dev)
2015 {
2016 struct bnx2fc_hba *hba;
2017 int rc = 0;
2018
2019 BNX2FC_MISC_DBG("Entered %s\n", __func__);
2020 /* bnx2fc works only when bnx2x is loaded */
2021 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
2022 (dev->max_fcoe_conn == 0)) {
2023 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
2024 " flags: %lx fcoe_conn: %d\n",
2025 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
2026 return;
2027 }
2028
2029 hba = bnx2fc_hba_create(dev);
2030 if (!hba) {
2031 printk(KERN_ERR PFX "hba initialization failed\n");
2032 return;
2033 }
2034
2035 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
2036
2037 /* Add HBA to the adapter list */
2038 mutex_lock(&bnx2fc_dev_lock);
2039 list_add_tail(&hba->list, &adapter_list);
2040 adapter_count++;
2041 mutex_unlock(&bnx2fc_dev_lock);
2042
2043 dev->fcoe_cap = &hba->fcoe_cap;
2044 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2045 rc = dev->register_device(dev, CNIC_ULP_FCOE,
2046 (void *) hba);
2047 if (rc)
2048 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2049 else
2050 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2051 }
2052
2053 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2054 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2055 {
2056 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2057
2058 if (interface->enabled == true) {
2059 if (!ctlr->lp) {
2060 pr_err(PFX "__bnx2fc_disable: lport not found\n");
2061 return -ENODEV;
2062 } else {
2063 interface->enabled = false;
2064 fcoe_ctlr_link_down(ctlr);
2065 fcoe_clean_pending_queue(ctlr->lp);
2066 }
2067 }
2068 return 0;
2069 }
2070
2071 /**
2072 * Deperecated: Use bnx2fc_enabled()
2073 */
2074 static int bnx2fc_disable(struct net_device *netdev)
2075 {
2076 struct bnx2fc_interface *interface;
2077 struct fcoe_ctlr *ctlr;
2078 int rc = 0;
2079
2080 rtnl_lock();
2081 mutex_lock(&bnx2fc_dev_lock);
2082
2083 interface = bnx2fc_interface_lookup(netdev);
2084 ctlr = bnx2fc_to_ctlr(interface);
2085
2086 if (!interface) {
2087 rc = -ENODEV;
2088 pr_err(PFX "bnx2fc_disable: interface not found\n");
2089 } else {
2090 rc = __bnx2fc_disable(ctlr);
2091 }
2092 mutex_unlock(&bnx2fc_dev_lock);
2093 rtnl_unlock();
2094 return rc;
2095 }
2096
2097 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2098 struct cnic_fc_npiv_tbl *npiv_tbl)
2099 {
2100 struct fc_vport_identifiers vpid;
2101 uint i, created = 0;
2102
2103 if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2104 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2105 goto done;
2106 }
2107
2108 /* Sanity check the first entry to make sure it's not 0 */
2109 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2110 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2111 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2112 goto done;
2113 }
2114
2115 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2116 vpid.vport_type = FC_PORTTYPE_NPIV;
2117 vpid.disable = false;
2118
2119 for (i = 0; i < npiv_tbl->count; i++) {
2120 vpid.node_name = wwn_to_u64(npiv_tbl->wwnn[i]);
2121 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2122 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2123 "NPIV[%u]:%016llx-%016llx",
2124 created, vpid.port_name, vpid.node_name);
2125 if (fc_vport_create(lport->host, 0, &vpid))
2126 created++;
2127 else
2128 BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2129 }
2130 done:
2131 return created;
2132 }
2133
2134 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2135 {
2136 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2137 struct bnx2fc_hba *hba;
2138 struct cnic_fc_npiv_tbl *npiv_tbl;
2139 struct fc_lport *lport;
2140
2141 if (interface->enabled == false) {
2142 if (!ctlr->lp) {
2143 pr_err(PFX "__bnx2fc_enable: lport not found\n");
2144 return -ENODEV;
2145 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2146 fcoe_ctlr_link_up(ctlr);
2147 interface->enabled = true;
2148 }
2149 }
2150
2151 /* Create static NPIV ports if any are contained in NVRAM */
2152 hba = interface->hba;
2153 lport = ctlr->lp;
2154
2155 if (!hba)
2156 goto done;
2157
2158 if (!hba->cnic)
2159 goto done;
2160
2161 if (!lport)
2162 goto done;
2163
2164 if (!lport->host)
2165 goto done;
2166
2167 if (!hba->cnic->get_fc_npiv_tbl)
2168 goto done;
2169
2170 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2171 if (!npiv_tbl)
2172 goto done;
2173
2174 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2175 goto done_free;
2176
2177 bnx2fc_npiv_create_vports(lport, npiv_tbl);
2178 done_free:
2179 kfree(npiv_tbl);
2180 done:
2181 return 0;
2182 }
2183
2184 /**
2185 * Deprecated: Use bnx2fc_enabled()
2186 */
2187 static int bnx2fc_enable(struct net_device *netdev)
2188 {
2189 struct bnx2fc_interface *interface;
2190 struct fcoe_ctlr *ctlr;
2191 int rc = 0;
2192
2193 rtnl_lock();
2194 mutex_lock(&bnx2fc_dev_lock);
2195
2196 interface = bnx2fc_interface_lookup(netdev);
2197 ctlr = bnx2fc_to_ctlr(interface);
2198 if (!interface) {
2199 rc = -ENODEV;
2200 pr_err(PFX "bnx2fc_enable: interface not found\n");
2201 } else {
2202 rc = __bnx2fc_enable(ctlr);
2203 }
2204
2205 mutex_unlock(&bnx2fc_dev_lock);
2206 rtnl_unlock();
2207 return rc;
2208 }
2209
2210 /**
2211 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2212 * @cdev: The FCoE Controller that is being enabled or disabled
2213 *
2214 * fcoe_sysfs will ensure that the state of 'enabled' has
2215 * changed, so no checking is necessary here. This routine simply
2216 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2217 * When those routines are removed the functionality can be merged
2218 * here.
2219 */
2220 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2221 {
2222 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2223
2224 switch (cdev->enabled) {
2225 case FCOE_CTLR_ENABLED:
2226 return __bnx2fc_enable(ctlr);
2227 case FCOE_CTLR_DISABLED:
2228 return __bnx2fc_disable(ctlr);
2229 case FCOE_CTLR_UNUSED:
2230 default:
2231 return -ENOTSUPP;
2232 };
2233 }
2234
2235 enum bnx2fc_create_link_state {
2236 BNX2FC_CREATE_LINK_DOWN,
2237 BNX2FC_CREATE_LINK_UP,
2238 };
2239
2240 /**
2241 * _bnx2fc_create() - Create bnx2fc FCoE interface
2242 * @netdev : The net_device object the Ethernet interface to create on
2243 * @fip_mode: The FIP mode for this creation
2244 * @link_state: The ctlr link state on creation
2245 *
2246 * Called from either the libfcoe 'create' module parameter
2247 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2248 *
2249 * libfcoe's 'create' module parameter is deprecated so some
2250 * consolidation of code can be done when that interface is
2251 * removed.
2252 *
2253 * Returns: 0 for success
2254 */
2255 static int _bnx2fc_create(struct net_device *netdev,
2256 enum fip_mode fip_mode,
2257 enum bnx2fc_create_link_state link_state)
2258 {
2259 struct fcoe_ctlr_device *cdev;
2260 struct fcoe_ctlr *ctlr;
2261 struct bnx2fc_interface *interface;
2262 struct bnx2fc_hba *hba;
2263 struct net_device *phys_dev = netdev;
2264 struct fc_lport *lport;
2265 struct ethtool_drvinfo drvinfo;
2266 int rc = 0;
2267 int vlan_id = 0;
2268
2269 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2270 if (fip_mode != FIP_MODE_FABRIC) {
2271 printk(KERN_ERR "fip mode not FABRIC\n");
2272 return -EIO;
2273 }
2274
2275 rtnl_lock();
2276
2277 mutex_lock(&bnx2fc_dev_lock);
2278
2279 if (!try_module_get(THIS_MODULE)) {
2280 rc = -EINVAL;
2281 goto mod_err;
2282 }
2283
2284 /* obtain physical netdev */
2285 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2286 phys_dev = vlan_dev_real_dev(netdev);
2287
2288 /* verify if the physical device is a netxtreme2 device */
2289 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2290 memset(&drvinfo, 0, sizeof(drvinfo));
2291 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2292 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2293 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2294 rc = -EINVAL;
2295 goto netdev_err;
2296 }
2297 } else {
2298 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2299 rc = -EINVAL;
2300 goto netdev_err;
2301 }
2302
2303 /* obtain interface and initialize rest of the structure */
2304 hba = bnx2fc_hba_lookup(phys_dev);
2305 if (!hba) {
2306 rc = -ENODEV;
2307 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2308 goto netdev_err;
2309 }
2310
2311 if (bnx2fc_interface_lookup(netdev)) {
2312 rc = -EEXIST;
2313 goto netdev_err;
2314 }
2315
2316 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2317 if (!interface) {
2318 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2319 rc = -ENOMEM;
2320 goto ifput_err;
2321 }
2322
2323 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2324 vlan_id = vlan_dev_vlan_id(netdev);
2325 interface->vlan_enabled = 1;
2326 }
2327
2328 ctlr = bnx2fc_to_ctlr(interface);
2329 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2330 interface->vlan_id = vlan_id;
2331 interface->tm_timeout = BNX2FC_TM_TIMEOUT;
2332
2333 interface->timer_work_queue =
2334 create_singlethread_workqueue("bnx2fc_timer_wq");
2335 if (!interface->timer_work_queue) {
2336 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2337 rc = -EINVAL;
2338 goto ifput_err;
2339 }
2340
2341 lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2342 if (!lport) {
2343 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2344 netdev->name);
2345 rc = -EINVAL;
2346 goto if_create_err;
2347 }
2348
2349 /* Add interface to if_list */
2350 list_add_tail(&interface->list, &if_list);
2351
2352 lport->boot_time = jiffies;
2353
2354 /* Make this master N_port */
2355 ctlr->lp = lport;
2356
2357 if (link_state == BNX2FC_CREATE_LINK_UP)
2358 cdev->enabled = FCOE_CTLR_ENABLED;
2359 else
2360 cdev->enabled = FCOE_CTLR_DISABLED;
2361
2362 if (link_state == BNX2FC_CREATE_LINK_UP &&
2363 !bnx2fc_link_ok(lport)) {
2364 fcoe_ctlr_link_up(ctlr);
2365 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2366 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2367 }
2368
2369 BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2370 bnx2fc_start_disc(interface);
2371
2372 if (link_state == BNX2FC_CREATE_LINK_UP)
2373 interface->enabled = true;
2374
2375 /*
2376 * Release from kref_init in bnx2fc_interface_setup, on success
2377 * lport should be holding a reference taken in bnx2fc_if_create
2378 */
2379 bnx2fc_interface_put(interface);
2380 /* put netdev that was held while calling dev_get_by_name */
2381 mutex_unlock(&bnx2fc_dev_lock);
2382 rtnl_unlock();
2383 return 0;
2384
2385 if_create_err:
2386 destroy_workqueue(interface->timer_work_queue);
2387 ifput_err:
2388 bnx2fc_net_cleanup(interface);
2389 bnx2fc_interface_put(interface);
2390 goto mod_err;
2391 netdev_err:
2392 module_put(THIS_MODULE);
2393 mod_err:
2394 mutex_unlock(&bnx2fc_dev_lock);
2395 rtnl_unlock();
2396 return rc;
2397 }
2398
2399 /**
2400 * bnx2fc_create() - Create a bnx2fc interface
2401 * @netdev : The net_device object the Ethernet interface to create on
2402 * @fip_mode: The FIP mode for this creation
2403 *
2404 * Called from fcoe transport
2405 *
2406 * Returns: 0 for success
2407 */
2408 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode)
2409 {
2410 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2411 }
2412
2413 /**
2414 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2415 * @netdev: The net_device to be used by the allocated FCoE Controller
2416 *
2417 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2418 * in a link_down state. The allows the user an opportunity to configure
2419 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2420 *
2421 * Creating in with this routine starts the FCoE Controller in Fabric
2422 * mode. The user can change to VN2VN or another mode before enabling.
2423 */
2424 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2425 {
2426 return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2427 BNX2FC_CREATE_LINK_DOWN);
2428 }
2429
2430 /**
2431 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2432 *
2433 * @cnic: Pointer to cnic device instance
2434 *
2435 **/
2436 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2437 {
2438 struct bnx2fc_hba *hba;
2439
2440 /* Called with bnx2fc_dev_lock held */
2441 list_for_each_entry(hba, &adapter_list, list) {
2442 if (hba->cnic == cnic)
2443 return hba;
2444 }
2445 return NULL;
2446 }
2447
2448 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2449 *netdev)
2450 {
2451 struct bnx2fc_interface *interface;
2452
2453 /* Called with bnx2fc_dev_lock held */
2454 list_for_each_entry(interface, &if_list, list) {
2455 if (interface->netdev == netdev)
2456 return interface;
2457 }
2458 return NULL;
2459 }
2460
2461 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2462 *phys_dev)
2463 {
2464 struct bnx2fc_hba *hba;
2465
2466 /* Called with bnx2fc_dev_lock held */
2467 list_for_each_entry(hba, &adapter_list, list) {
2468 if (hba->phys_dev == phys_dev)
2469 return hba;
2470 }
2471 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2472 return NULL;
2473 }
2474
2475 /**
2476 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2477 *
2478 * @dev cnic device handle
2479 */
2480 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2481 {
2482 struct bnx2fc_hba *hba;
2483 struct bnx2fc_interface *interface, *tmp;
2484
2485 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2486
2487 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2488 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2489 dev->netdev->name, dev->flags);
2490 return;
2491 }
2492
2493 mutex_lock(&bnx2fc_dev_lock);
2494 hba = bnx2fc_find_hba_for_cnic(dev);
2495 if (!hba) {
2496 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2497 dev);
2498 mutex_unlock(&bnx2fc_dev_lock);
2499 return;
2500 }
2501
2502 list_del_init(&hba->list);
2503 adapter_count--;
2504
2505 list_for_each_entry_safe(interface, tmp, &if_list, list)
2506 /* destroy not called yet, move to quiesced list */
2507 if (interface->hba == hba)
2508 __bnx2fc_destroy(interface);
2509 mutex_unlock(&bnx2fc_dev_lock);
2510
2511 /* Ensure ALL destroy work has been completed before return */
2512 flush_workqueue(bnx2fc_wq);
2513
2514 bnx2fc_ulp_stop(hba);
2515 /* unregister cnic device */
2516 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2517 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2518 bnx2fc_hba_destroy(hba);
2519 }
2520
2521 /**
2522 * bnx2fc_fcoe_reset - Resets the fcoe
2523 *
2524 * @shost: shost the reset is from
2525 *
2526 * Returns: always 0
2527 */
2528 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2529 {
2530 struct fc_lport *lport = shost_priv(shost);
2531 fc_lport_reset(lport);
2532 return 0;
2533 }
2534
2535
2536 static bool bnx2fc_match(struct net_device *netdev)
2537 {
2538 struct net_device *phys_dev = netdev;
2539
2540 mutex_lock(&bnx2fc_dev_lock);
2541 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2542 phys_dev = vlan_dev_real_dev(netdev);
2543
2544 if (bnx2fc_hba_lookup(phys_dev)) {
2545 mutex_unlock(&bnx2fc_dev_lock);
2546 return true;
2547 }
2548
2549 mutex_unlock(&bnx2fc_dev_lock);
2550 return false;
2551 }
2552
2553
2554 static struct fcoe_transport bnx2fc_transport = {
2555 .name = {"bnx2fc"},
2556 .attached = false,
2557 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2558 .alloc = bnx2fc_ctlr_alloc,
2559 .match = bnx2fc_match,
2560 .create = bnx2fc_create,
2561 .destroy = bnx2fc_destroy,
2562 .enable = bnx2fc_enable,
2563 .disable = bnx2fc_disable,
2564 };
2565
2566 /**
2567 * bnx2fc_percpu_thread_create - Create a receive thread for an
2568 * online CPU
2569 *
2570 * @cpu: cpu index for the online cpu
2571 */
2572 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2573 {
2574 struct bnx2fc_percpu_s *p;
2575 struct task_struct *thread;
2576
2577 p = &per_cpu(bnx2fc_percpu, cpu);
2578
2579 thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2580 (void *)p, cpu_to_node(cpu),
2581 "bnx2fc_thread/%d", cpu);
2582 /* bind thread to the cpu */
2583 if (likely(!IS_ERR(thread))) {
2584 kthread_bind(thread, cpu);
2585 p->iothread = thread;
2586 wake_up_process(thread);
2587 }
2588 }
2589
2590 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2591 {
2592 struct bnx2fc_percpu_s *p;
2593 struct task_struct *thread;
2594 struct bnx2fc_work *work, *tmp;
2595
2596 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2597
2598 /* Prevent any new work from being queued for this CPU */
2599 p = &per_cpu(bnx2fc_percpu, cpu);
2600 spin_lock_bh(&p->fp_work_lock);
2601 thread = p->iothread;
2602 p->iothread = NULL;
2603
2604
2605 /* Free all work in the list */
2606 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2607 list_del_init(&work->list);
2608 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2609 kfree(work);
2610 }
2611
2612 spin_unlock_bh(&p->fp_work_lock);
2613
2614 if (thread)
2615 kthread_stop(thread);
2616 }
2617
2618
2619 static int bnx2fc_cpu_online(unsigned int cpu)
2620 {
2621 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2622 bnx2fc_percpu_thread_create(cpu);
2623 return 0;
2624 }
2625
2626 static int bnx2fc_cpu_dead(unsigned int cpu)
2627 {
2628 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2629 bnx2fc_percpu_thread_destroy(cpu);
2630 return 0;
2631 }
2632
2633 static int bnx2fc_slave_configure(struct scsi_device *sdev)
2634 {
2635 if (!bnx2fc_queue_depth)
2636 return 0;
2637
2638 scsi_change_queue_depth(sdev, bnx2fc_queue_depth);
2639 return 0;
2640 }
2641
2642 static enum cpuhp_state bnx2fc_online_state;
2643
2644 /**
2645 * bnx2fc_mod_init - module init entry point
2646 *
2647 * Initialize driver wide global data structures, and register
2648 * with cnic module
2649 **/
2650 static int __init bnx2fc_mod_init(void)
2651 {
2652 struct fcoe_percpu_s *bg;
2653 struct task_struct *l2_thread;
2654 int rc = 0;
2655 unsigned int cpu = 0;
2656 struct bnx2fc_percpu_s *p;
2657
2658 printk(KERN_INFO PFX "%s", version);
2659
2660 /* register as a fcoe transport */
2661 rc = fcoe_transport_attach(&bnx2fc_transport);
2662 if (rc) {
2663 printk(KERN_ERR "failed to register an fcoe transport, check "
2664 "if libfcoe is loaded\n");
2665 goto out;
2666 }
2667
2668 INIT_LIST_HEAD(&adapter_list);
2669 INIT_LIST_HEAD(&if_list);
2670 mutex_init(&bnx2fc_dev_lock);
2671 adapter_count = 0;
2672
2673 /* Attach FC transport template */
2674 rc = bnx2fc_attach_transport();
2675 if (rc)
2676 goto detach_ft;
2677
2678 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2679 if (!bnx2fc_wq) {
2680 rc = -ENOMEM;
2681 goto release_bt;
2682 }
2683
2684 bg = &bnx2fc_global;
2685 skb_queue_head_init(&bg->fcoe_rx_list);
2686 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2687 (void *)bg,
2688 "bnx2fc_l2_thread");
2689 if (IS_ERR(l2_thread)) {
2690 rc = PTR_ERR(l2_thread);
2691 goto free_wq;
2692 }
2693 wake_up_process(l2_thread);
2694 spin_lock_bh(&bg->fcoe_rx_list.lock);
2695 bg->kthread = l2_thread;
2696 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2697
2698 for_each_possible_cpu(cpu) {
2699 p = &per_cpu(bnx2fc_percpu, cpu);
2700 INIT_LIST_HEAD(&p->work_list);
2701 spin_lock_init(&p->fp_work_lock);
2702 }
2703
2704 get_online_cpus();
2705
2706 for_each_online_cpu(cpu)
2707 bnx2fc_percpu_thread_create(cpu);
2708
2709 rc = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
2710 "scsi/bnx2fc:online",
2711 bnx2fc_cpu_online, NULL);
2712 if (rc < 0)
2713 goto stop_threads;
2714 bnx2fc_online_state = rc;
2715
2716 cpuhp_setup_state_nocalls(CPUHP_SCSI_BNX2FC_DEAD, "scsi/bnx2fc:dead",
2717 NULL, bnx2fc_cpu_dead);
2718 put_online_cpus();
2719
2720 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2721
2722 return 0;
2723
2724 stop_threads:
2725 for_each_online_cpu(cpu)
2726 bnx2fc_percpu_thread_destroy(cpu);
2727 put_online_cpus();
2728 kthread_stop(l2_thread);
2729 free_wq:
2730 destroy_workqueue(bnx2fc_wq);
2731 release_bt:
2732 bnx2fc_release_transport();
2733 detach_ft:
2734 fcoe_transport_detach(&bnx2fc_transport);
2735 out:
2736 return rc;
2737 }
2738
2739 static void __exit bnx2fc_mod_exit(void)
2740 {
2741 LIST_HEAD(to_be_deleted);
2742 struct bnx2fc_hba *hba, *next;
2743 struct fcoe_percpu_s *bg;
2744 struct task_struct *l2_thread;
2745 struct sk_buff *skb;
2746 unsigned int cpu = 0;
2747
2748 /*
2749 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2750 * it will have higher precedence than bnx2fc_dev_lock.
2751 * unregister_device() cannot be called with bnx2fc_dev_lock
2752 * held.
2753 */
2754 mutex_lock(&bnx2fc_dev_lock);
2755 list_splice_init(&adapter_list, &to_be_deleted);
2756 adapter_count = 0;
2757 mutex_unlock(&bnx2fc_dev_lock);
2758
2759 /* Unregister with cnic */
2760 list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2761 list_del_init(&hba->list);
2762 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2763 hba);
2764 bnx2fc_ulp_stop(hba);
2765 /* unregister cnic device */
2766 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2767 &hba->reg_with_cnic))
2768 hba->cnic->unregister_device(hba->cnic,
2769 CNIC_ULP_FCOE);
2770 bnx2fc_hba_destroy(hba);
2771 }
2772 cnic_unregister_driver(CNIC_ULP_FCOE);
2773
2774 /* Destroy global thread */
2775 bg = &bnx2fc_global;
2776 spin_lock_bh(&bg->fcoe_rx_list.lock);
2777 l2_thread = bg->kthread;
2778 bg->kthread = NULL;
2779 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2780 kfree_skb(skb);
2781
2782 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2783
2784 if (l2_thread)
2785 kthread_stop(l2_thread);
2786
2787 get_online_cpus();
2788 /* Destroy per cpu threads */
2789 for_each_online_cpu(cpu) {
2790 bnx2fc_percpu_thread_destroy(cpu);
2791 }
2792
2793 cpuhp_remove_state_nocalls(bnx2fc_online_state);
2794 cpuhp_remove_state_nocalls(CPUHP_SCSI_BNX2FC_DEAD);
2795
2796 put_online_cpus();
2797
2798 destroy_workqueue(bnx2fc_wq);
2799 /*
2800 * detach from scsi transport
2801 * must happen after all destroys are done
2802 */
2803 bnx2fc_release_transport();
2804
2805 /* detach from fcoe transport */
2806 fcoe_transport_detach(&bnx2fc_transport);
2807 }
2808
2809 module_init(bnx2fc_mod_init);
2810 module_exit(bnx2fc_mod_exit);
2811
2812 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2813 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2814 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2815 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2816 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2817 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2818 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2819 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2820
2821 .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2822 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2823 };
2824
2825 static struct fc_function_template bnx2fc_transport_function = {
2826 .show_host_node_name = 1,
2827 .show_host_port_name = 1,
2828 .show_host_supported_classes = 1,
2829 .show_host_supported_fc4s = 1,
2830 .show_host_active_fc4s = 1,
2831 .show_host_maxframe_size = 1,
2832
2833 .show_host_port_id = 1,
2834 .show_host_supported_speeds = 1,
2835 .get_host_speed = fc_get_host_speed,
2836 .show_host_speed = 1,
2837 .show_host_port_type = 1,
2838 .get_host_port_state = fc_get_host_port_state,
2839 .show_host_port_state = 1,
2840 .show_host_symbolic_name = 1,
2841
2842 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2843 sizeof(struct bnx2fc_rport)),
2844 .show_rport_maxframe_size = 1,
2845 .show_rport_supported_classes = 1,
2846
2847 .show_host_fabric_name = 1,
2848 .show_starget_node_name = 1,
2849 .show_starget_port_name = 1,
2850 .show_starget_port_id = 1,
2851 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2852 .show_rport_dev_loss_tmo = 1,
2853 .get_fc_host_stats = bnx2fc_get_host_stats,
2854
2855 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2856
2857 .terminate_rport_io = fc_rport_terminate_io,
2858
2859 .vport_create = bnx2fc_vport_create,
2860 .vport_delete = bnx2fc_vport_destroy,
2861 .vport_disable = bnx2fc_vport_disable,
2862 .bsg_request = fc_lport_bsg_request,
2863 };
2864
2865 static struct fc_function_template bnx2fc_vport_xport_function = {
2866 .show_host_node_name = 1,
2867 .show_host_port_name = 1,
2868 .show_host_supported_classes = 1,
2869 .show_host_supported_fc4s = 1,
2870 .show_host_active_fc4s = 1,
2871 .show_host_maxframe_size = 1,
2872
2873 .show_host_port_id = 1,
2874 .show_host_supported_speeds = 1,
2875 .get_host_speed = fc_get_host_speed,
2876 .show_host_speed = 1,
2877 .show_host_port_type = 1,
2878 .get_host_port_state = fc_get_host_port_state,
2879 .show_host_port_state = 1,
2880 .show_host_symbolic_name = 1,
2881
2882 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2883 sizeof(struct bnx2fc_rport)),
2884 .show_rport_maxframe_size = 1,
2885 .show_rport_supported_classes = 1,
2886
2887 .show_host_fabric_name = 1,
2888 .show_starget_node_name = 1,
2889 .show_starget_port_name = 1,
2890 .show_starget_port_id = 1,
2891 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2892 .show_rport_dev_loss_tmo = 1,
2893 .get_fc_host_stats = fc_get_host_stats,
2894 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2895 .terminate_rport_io = fc_rport_terminate_io,
2896 .bsg_request = fc_lport_bsg_request,
2897 };
2898
2899 /*
2900 * Additional scsi_host attributes.
2901 */
2902 static ssize_t
2903 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
2904 char *buf)
2905 {
2906 struct Scsi_Host *shost = class_to_shost(dev);
2907 struct fc_lport *lport = shost_priv(shost);
2908 struct fcoe_port *port = lport_priv(lport);
2909 struct bnx2fc_interface *interface = port->priv;
2910
2911 sprintf(buf, "%u\n", interface->tm_timeout);
2912 return strlen(buf);
2913 }
2914
2915 static ssize_t
2916 bnx2fc_tm_timeout_store(struct device *dev,
2917 struct device_attribute *attr, const char *buf, size_t count)
2918 {
2919 struct Scsi_Host *shost = class_to_shost(dev);
2920 struct fc_lport *lport = shost_priv(shost);
2921 struct fcoe_port *port = lport_priv(lport);
2922 struct bnx2fc_interface *interface = port->priv;
2923 int rval, val;
2924
2925 rval = kstrtouint(buf, 10, &val);
2926 if (rval)
2927 return rval;
2928 if (val > 255)
2929 return -ERANGE;
2930
2931 interface->tm_timeout = (u8)val;
2932 return strlen(buf);
2933 }
2934
2935 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
2936 bnx2fc_tm_timeout_store);
2937
2938 static struct device_attribute *bnx2fc_host_attrs[] = {
2939 &dev_attr_tm_timeout,
2940 NULL,
2941 };
2942
2943 /**
2944 * scsi_host_template structure used while registering with SCSI-ml
2945 */
2946 static struct scsi_host_template bnx2fc_shost_template = {
2947 .module = THIS_MODULE,
2948 .name = "QLogic Offload FCoE Initiator",
2949 .queuecommand = bnx2fc_queuecommand,
2950 .eh_timed_out = fc_eh_timed_out,
2951 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2952 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2953 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2954 .eh_host_reset_handler = fc_eh_host_reset,
2955 .slave_alloc = fc_slave_alloc,
2956 .change_queue_depth = scsi_change_queue_depth,
2957 .this_id = -1,
2958 .cmd_per_lun = 3,
2959 .use_clustering = ENABLE_CLUSTERING,
2960 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2961 .max_sectors = 1024,
2962 .track_queue_depth = 1,
2963 .slave_configure = bnx2fc_slave_configure,
2964 .shost_attrs = bnx2fc_host_attrs,
2965 };
2966
2967 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2968 .frame_send = bnx2fc_xmit,
2969 .elsct_send = bnx2fc_elsct_send,
2970 .fcp_abort_io = bnx2fc_abort_io,
2971 .fcp_cleanup = bnx2fc_cleanup,
2972 .get_lesb = fcoe_get_lesb,
2973 .rport_event_callback = bnx2fc_rport_event_handler,
2974 };
2975
2976 /**
2977 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2978 * structure carrying callback function pointers
2979 */
2980 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2981 .owner = THIS_MODULE,
2982 .cnic_init = bnx2fc_ulp_init,
2983 .cnic_exit = bnx2fc_ulp_exit,
2984 .cnic_start = bnx2fc_ulp_start,
2985 .cnic_stop = bnx2fc_ulp_stop,
2986 .indicate_kcqes = bnx2fc_indicate_kcqe,
2987 .indicate_netevent = bnx2fc_indicate_netevent,
2988 .cnic_get_stats = bnx2fc_ulp_get_stats,
2989 };
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