]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - drivers/scsi/bnx2fc/bnx2fc_fcoe.c
projects / mirror_ubuntu-artful-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
networking: make skb_put & friends return void pointers
[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 = 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 mutex_lock(&hba->hba_stats_mutex);
667
668 bnx2fc_stats = fc_get_host_stats(shost);
669
670 init_completion(&hba->stat_req_done);
671 if (bnx2fc_send_stat_req(hba))
672 goto unlock_stats_mutex;
673 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
674 if (!rc) {
675 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
676 goto unlock_stats_mutex;
677 }
678 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
679 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
680 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
681 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
682 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
683 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
684 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
685 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
686 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
687 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
688
689 bnx2fc_stats->dumped_frames = 0;
690 bnx2fc_stats->lip_count = 0;
691 bnx2fc_stats->nos_count = 0;
692 bnx2fc_stats->loss_of_sync_count = 0;
693 bnx2fc_stats->loss_of_signal_count = 0;
694 bnx2fc_stats->prim_seq_protocol_err_count = 0;
695
696 memcpy(&hba->prev_stats, hba->stats_buffer,
697 sizeof(struct fcoe_statistics_params));
698
699 unlock_stats_mutex:
700 mutex_unlock(&hba->hba_stats_mutex);
701 return bnx2fc_stats;
702 }
703
704 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
705 {
706 struct fcoe_port *port = lport_priv(lport);
707 struct bnx2fc_interface *interface = port->priv;
708 struct bnx2fc_hba *hba = interface->hba;
709 struct Scsi_Host *shost = lport->host;
710 int rc = 0;
711
712 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
713 shost->max_lun = bnx2fc_max_luns;
714 shost->max_id = BNX2FC_MAX_FCP_TGT;
715 shost->max_channel = 0;
716 if (lport->vport)
717 shost->transportt = bnx2fc_vport_xport_template;
718 else
719 shost->transportt = bnx2fc_transport_template;
720
721 /* Add the new host to SCSI-ml */
722 rc = scsi_add_host(lport->host, dev);
723 if (rc) {
724 printk(KERN_ERR PFX "Error on scsi_add_host\n");
725 return rc;
726 }
727 if (!lport->vport)
728 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
729 snprintf(fc_host_symbolic_name(lport->host), 256,
730 "%s (QLogic %s) v%s over %s",
731 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
732 interface->netdev->name);
733
734 return 0;
735 }
736
737 static int bnx2fc_link_ok(struct fc_lport *lport)
738 {
739 struct fcoe_port *port = lport_priv(lport);
740 struct bnx2fc_interface *interface = port->priv;
741 struct bnx2fc_hba *hba = interface->hba;
742 struct net_device *dev = hba->phys_dev;
743 int rc = 0;
744
745 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
746 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
747 else {
748 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
749 rc = -1;
750 }
751 return rc;
752 }
753
754 /**
755 * bnx2fc_get_link_state - get network link state
756 *
757 * @hba: adapter instance pointer
758 *
759 * updates adapter structure flag based on netdev state
760 */
761 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
762 {
763 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
764 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
765 else
766 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
767 }
768
769 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
770 {
771 struct bnx2fc_hba *hba;
772 struct bnx2fc_interface *interface;
773 struct fcoe_ctlr *ctlr;
774 struct fcoe_port *port;
775 u64 wwnn, wwpn;
776
777 port = lport_priv(lport);
778 interface = port->priv;
779 ctlr = bnx2fc_to_ctlr(interface);
780 hba = interface->hba;
781
782 /* require support for get_pauseparam ethtool op. */
783 if (!hba->phys_dev->ethtool_ops ||
784 !hba->phys_dev->ethtool_ops->get_pauseparam)
785 return -EOPNOTSUPP;
786
787 if (fc_set_mfs(lport, BNX2FC_MFS))
788 return -EINVAL;
789
790 skb_queue_head_init(&port->fcoe_pending_queue);
791 port->fcoe_pending_queue_active = 0;
792 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
793
794 fcoe_link_speed_update(lport);
795
796 if (!lport->vport) {
797 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
798 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
799 1, 0);
800 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
801 fc_set_wwnn(lport, wwnn);
802
803 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
804 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
805 2, 0);
806
807 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
808 fc_set_wwpn(lport, wwpn);
809 }
810
811 return 0;
812 }
813
814 static void bnx2fc_destroy_timer(unsigned long data)
815 {
816 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
817
818 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
819 "Destroy compl not received!!\n");
820 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
821 wake_up_interruptible(&hba->destroy_wait);
822 }
823
824 /**
825 * bnx2fc_indicate_netevent - Generic netdev event handler
826 *
827 * @context: adapter structure pointer
828 * @event: event type
829 * @vlan_id: vlan id - associated vlan id with this event
830 *
831 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
832 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
833 */
834 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
835 u16 vlan_id)
836 {
837 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
838 struct fcoe_ctlr_device *cdev;
839 struct fc_lport *lport;
840 struct fc_lport *vport;
841 struct bnx2fc_interface *interface, *tmp;
842 struct fcoe_ctlr *ctlr;
843 int wait_for_upload = 0;
844 u32 link_possible = 1;
845
846 if (vlan_id != 0 && event != NETDEV_UNREGISTER)
847 return;
848
849 switch (event) {
850 case NETDEV_UP:
851 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
852 printk(KERN_ERR "indicate_netevent: "\
853 "hba is not UP!!\n");
854 break;
855
856 case NETDEV_DOWN:
857 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
858 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
859 link_possible = 0;
860 break;
861
862 case NETDEV_GOING_DOWN:
863 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
864 link_possible = 0;
865 break;
866
867 case NETDEV_CHANGE:
868 break;
869
870 case NETDEV_UNREGISTER:
871 if (!vlan_id)
872 return;
873 mutex_lock(&bnx2fc_dev_lock);
874 list_for_each_entry_safe(interface, tmp, &if_list, list) {
875 if (interface->hba == hba &&
876 interface->vlan_id == (vlan_id & VLAN_VID_MASK))
877 __bnx2fc_destroy(interface);
878 }
879 mutex_unlock(&bnx2fc_dev_lock);
880
881 /* Ensure ALL destroy work has been completed before return */
882 flush_workqueue(bnx2fc_wq);
883 return;
884
885 default:
886 return;
887 }
888
889 mutex_lock(&bnx2fc_dev_lock);
890 list_for_each_entry(interface, &if_list, list) {
891
892 if (interface->hba != hba)
893 continue;
894
895 ctlr = bnx2fc_to_ctlr(interface);
896 lport = ctlr->lp;
897 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
898 interface->netdev->name, event);
899
900 fcoe_link_speed_update(lport);
901
902 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
903
904 if (link_possible && !bnx2fc_link_ok(lport)) {
905 switch (cdev->enabled) {
906 case FCOE_CTLR_DISABLED:
907 pr_info("Link up while interface is disabled.\n");
908 break;
909 case FCOE_CTLR_ENABLED:
910 case FCOE_CTLR_UNUSED:
911 /* Reset max recv frame size to default */
912 fc_set_mfs(lport, BNX2FC_MFS);
913 /*
914 * ctlr link up will only be handled during
915 * enable to avoid sending discovery
916 * solicitation on a stale vlan
917 */
918 if (interface->enabled)
919 fcoe_ctlr_link_up(ctlr);
920 };
921 } else if (fcoe_ctlr_link_down(ctlr)) {
922 switch (cdev->enabled) {
923 case FCOE_CTLR_DISABLED:
924 pr_info("Link down while interface is disabled.\n");
925 break;
926 case FCOE_CTLR_ENABLED:
927 case FCOE_CTLR_UNUSED:
928 mutex_lock(&lport->lp_mutex);
929 list_for_each_entry(vport, &lport->vports, list)
930 fc_host_port_type(vport->host) =
931 FC_PORTTYPE_UNKNOWN;
932 mutex_unlock(&lport->lp_mutex);
933 fc_host_port_type(lport->host) =
934 FC_PORTTYPE_UNKNOWN;
935 per_cpu_ptr(lport->stats,
936 get_cpu())->LinkFailureCount++;
937 put_cpu();
938 fcoe_clean_pending_queue(lport);
939 wait_for_upload = 1;
940 };
941 }
942 }
943 mutex_unlock(&bnx2fc_dev_lock);
944
945 if (wait_for_upload) {
946 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
947 init_waitqueue_head(&hba->shutdown_wait);
948 BNX2FC_MISC_DBG("indicate_netevent "
949 "num_ofld_sess = %d\n",
950 hba->num_ofld_sess);
951 hba->wait_for_link_down = 1;
952 wait_event_interruptible(hba->shutdown_wait,
953 (hba->num_ofld_sess == 0));
954 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
955 hba->num_ofld_sess);
956 hba->wait_for_link_down = 0;
957
958 if (signal_pending(current))
959 flush_signals(current);
960 }
961 }
962
963 static int bnx2fc_libfc_config(struct fc_lport *lport)
964 {
965
966 /* Set the function pointers set by bnx2fc driver */
967 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
968 sizeof(struct libfc_function_template));
969 fc_elsct_init(lport);
970 fc_exch_init(lport);
971 fc_disc_init(lport);
972 fc_disc_config(lport, lport);
973 return 0;
974 }
975
976 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
977 {
978 int fcoe_min_xid, fcoe_max_xid;
979
980 fcoe_min_xid = hba->max_xid + 1;
981 if (nr_cpu_ids <= 2)
982 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
983 else
984 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
985 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
986 fcoe_max_xid, NULL)) {
987 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
988 return -ENOMEM;
989 }
990
991 return 0;
992 }
993
994 static int bnx2fc_lport_config(struct fc_lport *lport)
995 {
996 lport->link_up = 0;
997 lport->qfull = 0;
998 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
999 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
1000 lport->e_d_tov = 2 * 1000;
1001 lport->r_a_tov = 10 * 1000;
1002
1003 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1004 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1005 lport->does_npiv = 1;
1006
1007 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1008 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1009
1010 /* alloc stats structure */
1011 if (fc_lport_init_stats(lport))
1012 return -ENOMEM;
1013
1014 /* Finish fc_lport configuration */
1015 fc_lport_config(lport);
1016
1017 return 0;
1018 }
1019
1020 /**
1021 * bnx2fc_fip_recv - handle a received FIP frame.
1022 *
1023 * @skb: the received skb
1024 * @dev: associated &net_device
1025 * @ptype: the &packet_type structure which was used to register this handler.
1026 * @orig_dev: original receive &net_device, in case @ dev is a bond.
1027 *
1028 * Returns: 0 for success
1029 */
1030 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1031 struct packet_type *ptype,
1032 struct net_device *orig_dev)
1033 {
1034 struct bnx2fc_interface *interface;
1035 struct fcoe_ctlr *ctlr;
1036 interface = container_of(ptype, struct bnx2fc_interface,
1037 fip_packet_type);
1038 ctlr = bnx2fc_to_ctlr(interface);
1039 fcoe_ctlr_recv(ctlr, skb);
1040 return 0;
1041 }
1042
1043 /**
1044 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1045 *
1046 * @fip: FCoE controller.
1047 * @old: Unicast MAC address to delete if the MAC is non-zero.
1048 * @new: Unicast MAC address to add.
1049 *
1050 * Remove any previously-set unicast MAC filter.
1051 * Add secondary FCoE MAC address filter for our OUI.
1052 */
1053 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1054 {
1055 struct fcoe_port *port = lport_priv(lport);
1056
1057 memcpy(port->data_src_addr, addr, ETH_ALEN);
1058 }
1059
1060 /**
1061 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1062 *
1063 * @lport: libfc port
1064 */
1065 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1066 {
1067 struct fcoe_port *port;
1068
1069 port = (struct fcoe_port *)lport_priv(lport);
1070 return port->data_src_addr;
1071 }
1072
1073 /**
1074 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1075 *
1076 * @fip: FCoE controller.
1077 * @skb: FIP Packet.
1078 */
1079 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1080 {
1081 struct fip_header *fiph;
1082 struct ethhdr *eth_hdr;
1083 u16 op;
1084 u8 sub;
1085
1086 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
1087 eth_hdr = (struct ethhdr *)skb_mac_header(skb);
1088 op = ntohs(fiph->fip_op);
1089 sub = fiph->fip_subcode;
1090
1091 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
1092 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
1093 eth_hdr->h_source, eth_hdr->h_dest);
1094
1095 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1096 dev_queue_xmit(skb);
1097 }
1098
1099 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1100 {
1101 struct Scsi_Host *shost = vport_to_shost(vport);
1102 struct fc_lport *n_port = shost_priv(shost);
1103 struct fcoe_port *port = lport_priv(n_port);
1104 struct bnx2fc_interface *interface = port->priv;
1105 struct net_device *netdev = interface->netdev;
1106 struct fc_lport *vn_port;
1107 int rc;
1108 char buf[32];
1109
1110 rc = fcoe_validate_vport_create(vport);
1111 if (rc) {
1112 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1113 printk(KERN_ERR PFX "Failed to create vport, "
1114 "WWPN (0x%s) already exists\n",
1115 buf);
1116 return rc;
1117 }
1118
1119 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1120 printk(KERN_ERR PFX "vn ports cannot be created on"
1121 "this interface\n");
1122 return -EIO;
1123 }
1124 rtnl_lock();
1125 mutex_lock(&bnx2fc_dev_lock);
1126 vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1127 mutex_unlock(&bnx2fc_dev_lock);
1128 rtnl_unlock();
1129
1130 if (!vn_port) {
1131 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1132 netdev->name);
1133 return -EIO;
1134 }
1135
1136 if (bnx2fc_devloss_tmo)
1137 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
1138
1139 if (disabled) {
1140 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1141 } else {
1142 vn_port->boot_time = jiffies;
1143 fc_lport_init(vn_port);
1144 fc_fabric_login(vn_port);
1145 fc_vport_setlink(vn_port);
1146 }
1147 return 0;
1148 }
1149
1150 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1151 {
1152 struct bnx2fc_lport *blport, *tmp;
1153
1154 spin_lock_bh(&hba->hba_lock);
1155 list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1156 if (blport->lport == lport) {
1157 list_del(&blport->list);
1158 kfree(blport);
1159 }
1160 }
1161 spin_unlock_bh(&hba->hba_lock);
1162 }
1163
1164 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1165 {
1166 struct Scsi_Host *shost = vport_to_shost(vport);
1167 struct fc_lport *n_port = shost_priv(shost);
1168 struct fc_lport *vn_port = vport->dd_data;
1169 struct fcoe_port *port = lport_priv(vn_port);
1170 struct bnx2fc_interface *interface = port->priv;
1171 struct fc_lport *v_port;
1172 bool found = false;
1173
1174 mutex_lock(&n_port->lp_mutex);
1175 list_for_each_entry(v_port, &n_port->vports, list)
1176 if (v_port->vport == vport) {
1177 found = true;
1178 break;
1179 }
1180
1181 if (!found) {
1182 mutex_unlock(&n_port->lp_mutex);
1183 return -ENOENT;
1184 }
1185 list_del(&vn_port->list);
1186 mutex_unlock(&n_port->lp_mutex);
1187 bnx2fc_free_vport(interface->hba, port->lport);
1188 bnx2fc_port_shutdown(port->lport);
1189 bnx2fc_interface_put(interface);
1190 queue_work(bnx2fc_wq, &port->destroy_work);
1191 return 0;
1192 }
1193
1194 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1195 {
1196 struct fc_lport *lport = vport->dd_data;
1197
1198 if (disable) {
1199 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1200 fc_fabric_logoff(lport);
1201 } else {
1202 lport->boot_time = jiffies;
1203 fc_fabric_login(lport);
1204 fc_vport_setlink(lport);
1205 }
1206 return 0;
1207 }
1208
1209
1210 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1211 {
1212 struct net_device *netdev = interface->netdev;
1213 struct net_device *physdev = interface->hba->phys_dev;
1214 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1215 struct netdev_hw_addr *ha;
1216 int sel_san_mac = 0;
1217
1218 /* setup Source MAC Address */
1219 rcu_read_lock();
1220 for_each_dev_addr(physdev, ha) {
1221 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1222 ha->type);
1223 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1224 ha->addr[1], ha->addr[2], ha->addr[3],
1225 ha->addr[4], ha->addr[5]);
1226
1227 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1228 (is_valid_ether_addr(ha->addr))) {
1229 memcpy(ctlr->ctl_src_addr, ha->addr,
1230 ETH_ALEN);
1231 sel_san_mac = 1;
1232 BNX2FC_MISC_DBG("Found SAN MAC\n");
1233 }
1234 }
1235 rcu_read_unlock();
1236
1237 if (!sel_san_mac)
1238 return -ENODEV;
1239
1240 interface->fip_packet_type.func = bnx2fc_fip_recv;
1241 interface->fip_packet_type.type = htons(ETH_P_FIP);
1242 interface->fip_packet_type.dev = netdev;
1243 dev_add_pack(&interface->fip_packet_type);
1244
1245 interface->fcoe_packet_type.func = bnx2fc_rcv;
1246 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1247 interface->fcoe_packet_type.dev = netdev;
1248 dev_add_pack(&interface->fcoe_packet_type);
1249
1250 return 0;
1251 }
1252
1253 static int bnx2fc_attach_transport(void)
1254 {
1255 bnx2fc_transport_template =
1256 fc_attach_transport(&bnx2fc_transport_function);
1257
1258 if (bnx2fc_transport_template == NULL) {
1259 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1260 return -ENODEV;
1261 }
1262
1263 bnx2fc_vport_xport_template =
1264 fc_attach_transport(&bnx2fc_vport_xport_function);
1265 if (bnx2fc_vport_xport_template == NULL) {
1266 printk(KERN_ERR PFX
1267 "Failed to attach FC transport for vport\n");
1268 fc_release_transport(bnx2fc_transport_template);
1269 bnx2fc_transport_template = NULL;
1270 return -ENODEV;
1271 }
1272 return 0;
1273 }
1274 static void bnx2fc_release_transport(void)
1275 {
1276 fc_release_transport(bnx2fc_transport_template);
1277 fc_release_transport(bnx2fc_vport_xport_template);
1278 bnx2fc_transport_template = NULL;
1279 bnx2fc_vport_xport_template = NULL;
1280 }
1281
1282 static void bnx2fc_interface_release(struct kref *kref)
1283 {
1284 struct fcoe_ctlr_device *ctlr_dev;
1285 struct bnx2fc_interface *interface;
1286 struct fcoe_ctlr *ctlr;
1287 struct net_device *netdev;
1288
1289 interface = container_of(kref, struct bnx2fc_interface, kref);
1290 BNX2FC_MISC_DBG("Interface is being released\n");
1291
1292 ctlr = bnx2fc_to_ctlr(interface);
1293 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1294 netdev = interface->netdev;
1295
1296 /* tear-down FIP controller */
1297 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1298 fcoe_ctlr_destroy(ctlr);
1299
1300 fcoe_ctlr_device_delete(ctlr_dev);
1301
1302 dev_put(netdev);
1303 module_put(THIS_MODULE);
1304 }
1305
1306 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1307 {
1308 kref_get(&interface->kref);
1309 }
1310
1311 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1312 {
1313 kref_put(&interface->kref, bnx2fc_interface_release);
1314 }
1315 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1316 {
1317 /* Free the command manager */
1318 if (hba->cmd_mgr) {
1319 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1320 hba->cmd_mgr = NULL;
1321 }
1322 kfree(hba->tgt_ofld_list);
1323 bnx2fc_unbind_pcidev(hba);
1324 kfree(hba);
1325 }
1326
1327 /**
1328 * bnx2fc_hba_create - create a new bnx2fc hba
1329 *
1330 * @cnic: pointer to cnic device
1331 *
1332 * Creates a new FCoE hba on the given device.
1333 *
1334 */
1335 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1336 {
1337 struct bnx2fc_hba *hba;
1338 struct fcoe_capabilities *fcoe_cap;
1339 int rc;
1340
1341 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1342 if (!hba) {
1343 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1344 return NULL;
1345 }
1346 spin_lock_init(&hba->hba_lock);
1347 mutex_init(&hba->hba_mutex);
1348 mutex_init(&hba->hba_stats_mutex);
1349
1350 hba->cnic = cnic;
1351
1352 hba->max_tasks = cnic->max_fcoe_exchanges;
1353 hba->elstm_xids = (hba->max_tasks / 2);
1354 hba->max_outstanding_cmds = hba->elstm_xids;
1355 hba->max_xid = (hba->max_tasks - 1);
1356
1357 rc = bnx2fc_bind_pcidev(hba);
1358 if (rc) {
1359 printk(KERN_ERR PFX "create_adapter: bind error\n");
1360 goto bind_err;
1361 }
1362 hba->phys_dev = cnic->netdev;
1363 hba->next_conn_id = 0;
1364
1365 hba->tgt_ofld_list =
1366 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1367 GFP_KERNEL);
1368 if (!hba->tgt_ofld_list) {
1369 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1370 goto tgtofld_err;
1371 }
1372
1373 hba->num_ofld_sess = 0;
1374
1375 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1376 if (!hba->cmd_mgr) {
1377 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1378 goto cmgr_err;
1379 }
1380 fcoe_cap = &hba->fcoe_cap;
1381
1382 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1383 FCOE_IOS_PER_CONNECTION_SHIFT;
1384 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1385 FCOE_LOGINS_PER_PORT_SHIFT;
1386 fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1387 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1388 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1389 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1390 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1391 FCOE_TARGETS_SUPPORTED_SHIFT;
1392 fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1393 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1394 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1395
1396 init_waitqueue_head(&hba->shutdown_wait);
1397 init_waitqueue_head(&hba->destroy_wait);
1398 INIT_LIST_HEAD(&hba->vports);
1399
1400 return hba;
1401
1402 cmgr_err:
1403 kfree(hba->tgt_ofld_list);
1404 tgtofld_err:
1405 bnx2fc_unbind_pcidev(hba);
1406 bind_err:
1407 kfree(hba);
1408 return NULL;
1409 }
1410
1411 static struct bnx2fc_interface *
1412 bnx2fc_interface_create(struct bnx2fc_hba *hba,
1413 struct net_device *netdev,
1414 enum fip_state fip_mode)
1415 {
1416 struct fcoe_ctlr_device *ctlr_dev;
1417 struct bnx2fc_interface *interface;
1418 struct fcoe_ctlr *ctlr;
1419 int size;
1420 int rc = 0;
1421
1422 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1423 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1424 size);
1425 if (!ctlr_dev) {
1426 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1427 return NULL;
1428 }
1429 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1430 ctlr->cdev = ctlr_dev;
1431 interface = fcoe_ctlr_priv(ctlr);
1432 dev_hold(netdev);
1433 kref_init(&interface->kref);
1434 interface->hba = hba;
1435 interface->netdev = netdev;
1436
1437 /* Initialize FIP */
1438 fcoe_ctlr_init(ctlr, fip_mode);
1439 ctlr->send = bnx2fc_fip_send;
1440 ctlr->update_mac = bnx2fc_update_src_mac;
1441 ctlr->get_src_addr = bnx2fc_get_src_mac;
1442 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1443
1444 rc = bnx2fc_interface_setup(interface);
1445 if (!rc)
1446 return interface;
1447
1448 fcoe_ctlr_destroy(ctlr);
1449 dev_put(netdev);
1450 fcoe_ctlr_device_delete(ctlr_dev);
1451 return NULL;
1452 }
1453
1454 /**
1455 * bnx2fc_if_create - Create FCoE instance on a given interface
1456 *
1457 * @interface: FCoE interface to create a local port on
1458 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1459 * @npiv: Indicates if the port is vport or not
1460 *
1461 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1462 *
1463 * Returns: Allocated fc_lport or an error pointer
1464 */
1465 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1466 struct device *parent, int npiv)
1467 {
1468 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1469 struct fc_lport *lport, *n_port;
1470 struct fcoe_port *port;
1471 struct Scsi_Host *shost;
1472 struct fc_vport *vport = dev_to_vport(parent);
1473 struct bnx2fc_lport *blport;
1474 struct bnx2fc_hba *hba = interface->hba;
1475 int rc = 0;
1476
1477 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1478 if (!blport) {
1479 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1480 return NULL;
1481 }
1482
1483 /* Allocate Scsi_Host structure */
1484 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1485 if (!npiv)
1486 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1487 else
1488 lport = libfc_vport_create(vport, sizeof(*port));
1489
1490 if (!lport) {
1491 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1492 goto free_blport;
1493 }
1494 shost = lport->host;
1495 port = lport_priv(lport);
1496 port->lport = lport;
1497 port->priv = interface;
1498 port->get_netdev = bnx2fc_netdev;
1499 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1500
1501 /* Configure fcoe_port */
1502 rc = bnx2fc_lport_config(lport);
1503 if (rc)
1504 goto lp_config_err;
1505
1506 if (npiv) {
1507 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1508 vport->node_name, vport->port_name);
1509 fc_set_wwnn(lport, vport->node_name);
1510 fc_set_wwpn(lport, vport->port_name);
1511 }
1512 /* Configure netdev and networking properties of the lport */
1513 rc = bnx2fc_net_config(lport, interface->netdev);
1514 if (rc) {
1515 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1516 goto lp_config_err;
1517 }
1518
1519 rc = bnx2fc_shost_config(lport, parent);
1520 if (rc) {
1521 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1522 interface->netdev->name);
1523 goto lp_config_err;
1524 }
1525
1526 /* Initialize the libfc library */
1527 rc = bnx2fc_libfc_config(lport);
1528 if (rc) {
1529 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1530 goto shost_err;
1531 }
1532 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1533
1534 if (bnx2fc_devloss_tmo)
1535 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo;
1536
1537 /* Allocate exchange manager */
1538 if (!npiv)
1539 rc = bnx2fc_em_config(lport, hba);
1540 else {
1541 shost = vport_to_shost(vport);
1542 n_port = shost_priv(shost);
1543 rc = fc_exch_mgr_list_clone(n_port, lport);
1544 }
1545
1546 if (rc) {
1547 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1548 goto shost_err;
1549 }
1550
1551 bnx2fc_interface_get(interface);
1552
1553 spin_lock_bh(&hba->hba_lock);
1554 blport->lport = lport;
1555 list_add_tail(&blport->list, &hba->vports);
1556 spin_unlock_bh(&hba->hba_lock);
1557
1558 return lport;
1559
1560 shost_err:
1561 scsi_remove_host(shost);
1562 lp_config_err:
1563 scsi_host_put(lport->host);
1564 free_blport:
1565 kfree(blport);
1566 return NULL;
1567 }
1568
1569 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1570 {
1571 /* Dont listen for Ethernet packets anymore */
1572 __dev_remove_pack(&interface->fcoe_packet_type);
1573 __dev_remove_pack(&interface->fip_packet_type);
1574 synchronize_net();
1575 }
1576
1577 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1578 {
1579 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1580 struct fc_lport *lport = ctlr->lp;
1581 struct fcoe_port *port = lport_priv(lport);
1582 struct bnx2fc_hba *hba = interface->hba;
1583
1584 /* Stop the transmit retry timer */
1585 del_timer_sync(&port->timer);
1586
1587 /* Free existing transmit skbs */
1588 fcoe_clean_pending_queue(lport);
1589
1590 bnx2fc_net_cleanup(interface);
1591
1592 bnx2fc_free_vport(hba, lport);
1593 }
1594
1595 static void bnx2fc_if_destroy(struct fc_lport *lport)
1596 {
1597
1598 /* Free queued packets for the receive thread */
1599 bnx2fc_clean_rx_queue(lport);
1600
1601 /* Detach from scsi-ml */
1602 fc_remove_host(lport->host);
1603 scsi_remove_host(lport->host);
1604
1605 /*
1606 * Note that only the physical lport will have the exchange manager.
1607 * for vports, this function is NOP
1608 */
1609 fc_exch_mgr_free(lport);
1610
1611 /* Free memory used by statistical counters */
1612 fc_lport_free_stats(lport);
1613
1614 /* Release Scsi_Host */
1615 scsi_host_put(lport->host);
1616 }
1617
1618 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1619 {
1620 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1621 struct fc_lport *lport = ctlr->lp;
1622 struct fcoe_port *port = lport_priv(lport);
1623
1624 bnx2fc_interface_cleanup(interface);
1625 bnx2fc_stop(interface);
1626 list_del(&interface->list);
1627 bnx2fc_interface_put(interface);
1628 queue_work(bnx2fc_wq, &port->destroy_work);
1629 }
1630
1631 /**
1632 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1633 *
1634 * @buffer: The name of the Ethernet interface to be destroyed
1635 * @kp: The associated kernel parameter
1636 *
1637 * Called from sysfs.
1638 *
1639 * Returns: 0 for success
1640 */
1641 static int bnx2fc_destroy(struct net_device *netdev)
1642 {
1643 struct bnx2fc_interface *interface = NULL;
1644 struct workqueue_struct *timer_work_queue;
1645 struct fcoe_ctlr *ctlr;
1646 int rc = 0;
1647
1648 rtnl_lock();
1649 mutex_lock(&bnx2fc_dev_lock);
1650
1651 interface = bnx2fc_interface_lookup(netdev);
1652 ctlr = bnx2fc_to_ctlr(interface);
1653 if (!interface || !ctlr->lp) {
1654 rc = -ENODEV;
1655 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1656 goto netdev_err;
1657 }
1658
1659 timer_work_queue = interface->timer_work_queue;
1660 __bnx2fc_destroy(interface);
1661 destroy_workqueue(timer_work_queue);
1662
1663 netdev_err:
1664 mutex_unlock(&bnx2fc_dev_lock);
1665 rtnl_unlock();
1666 return rc;
1667 }
1668
1669 static void bnx2fc_destroy_work(struct work_struct *work)
1670 {
1671 struct fcoe_port *port;
1672 struct fc_lport *lport;
1673
1674 port = container_of(work, struct fcoe_port, destroy_work);
1675 lport = port->lport;
1676
1677 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1678
1679 bnx2fc_if_destroy(lport);
1680 }
1681
1682 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1683 {
1684 bnx2fc_free_fw_resc(hba);
1685 bnx2fc_free_task_ctx(hba);
1686 }
1687
1688 /**
1689 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1690 * pci structure
1691 *
1692 * @hba: Adapter instance
1693 */
1694 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1695 {
1696 if (bnx2fc_setup_task_ctx(hba))
1697 goto mem_err;
1698
1699 if (bnx2fc_setup_fw_resc(hba))
1700 goto mem_err;
1701
1702 return 0;
1703 mem_err:
1704 bnx2fc_unbind_adapter_devices(hba);
1705 return -ENOMEM;
1706 }
1707
1708 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1709 {
1710 struct cnic_dev *cnic;
1711 struct pci_dev *pdev;
1712
1713 if (!hba->cnic) {
1714 printk(KERN_ERR PFX "cnic is NULL\n");
1715 return -ENODEV;
1716 }
1717 cnic = hba->cnic;
1718 pdev = hba->pcidev = cnic->pcidev;
1719 if (!hba->pcidev)
1720 return -ENODEV;
1721
1722 switch (pdev->device) {
1723 case PCI_DEVICE_ID_NX2_57710:
1724 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1725 break;
1726 case PCI_DEVICE_ID_NX2_57711:
1727 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1728 break;
1729 case PCI_DEVICE_ID_NX2_57712:
1730 case PCI_DEVICE_ID_NX2_57712_MF:
1731 case PCI_DEVICE_ID_NX2_57712_VF:
1732 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1733 break;
1734 case PCI_DEVICE_ID_NX2_57800:
1735 case PCI_DEVICE_ID_NX2_57800_MF:
1736 case PCI_DEVICE_ID_NX2_57800_VF:
1737 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1738 break;
1739 case PCI_DEVICE_ID_NX2_57810:
1740 case PCI_DEVICE_ID_NX2_57810_MF:
1741 case PCI_DEVICE_ID_NX2_57810_VF:
1742 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1743 break;
1744 case PCI_DEVICE_ID_NX2_57840:
1745 case PCI_DEVICE_ID_NX2_57840_MF:
1746 case PCI_DEVICE_ID_NX2_57840_VF:
1747 case PCI_DEVICE_ID_NX2_57840_2_20:
1748 case PCI_DEVICE_ID_NX2_57840_4_10:
1749 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1750 break;
1751 default:
1752 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1753 break;
1754 }
1755 pci_dev_get(hba->pcidev);
1756 return 0;
1757 }
1758
1759 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1760 {
1761 if (hba->pcidev) {
1762 hba->chip_num[0] = '\0';
1763 pci_dev_put(hba->pcidev);
1764 }
1765 hba->pcidev = NULL;
1766 }
1767
1768 /**
1769 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1770 *
1771 * @handle: transport handle pointing to adapter struture
1772 */
1773 static int bnx2fc_ulp_get_stats(void *handle)
1774 {
1775 struct bnx2fc_hba *hba = handle;
1776 struct cnic_dev *cnic;
1777 struct fcoe_stats_info *stats_addr;
1778
1779 if (!hba)
1780 return -EINVAL;
1781
1782 cnic = hba->cnic;
1783 stats_addr = &cnic->stats_addr->fcoe_stat;
1784 if (!stats_addr)
1785 return -EINVAL;
1786
1787 strncpy(stats_addr->version, BNX2FC_VERSION,
1788 sizeof(stats_addr->version));
1789 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1790 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1791
1792 return 0;
1793 }
1794
1795
1796 /**
1797 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1798 *
1799 * @handle: transport handle pointing to adapter structure
1800 *
1801 * This function maps adapter structure to pcidev structure and initiates
1802 * firmware handshake to enable/initialize on-chip FCoE components.
1803 * This bnx2fc - cnic interface api callback is used after following
1804 * conditions are met -
1805 * a) underlying network interface is up (marked by event NETDEV_UP
1806 * from netdev
1807 * b) bnx2fc adatper structure is registered.
1808 */
1809 static void bnx2fc_ulp_start(void *handle)
1810 {
1811 struct bnx2fc_hba *hba = handle;
1812 struct bnx2fc_interface *interface;
1813 struct fcoe_ctlr *ctlr;
1814 struct fc_lport *lport;
1815
1816 mutex_lock(&bnx2fc_dev_lock);
1817
1818 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1819 bnx2fc_fw_init(hba);
1820
1821 BNX2FC_MISC_DBG("bnx2fc started.\n");
1822
1823 list_for_each_entry(interface, &if_list, list) {
1824 if (interface->hba == hba) {
1825 ctlr = bnx2fc_to_ctlr(interface);
1826 lport = ctlr->lp;
1827 /* Kick off Fabric discovery*/
1828 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1829 lport->tt.frame_send = bnx2fc_xmit;
1830 bnx2fc_start_disc(interface);
1831 }
1832 }
1833
1834 mutex_unlock(&bnx2fc_dev_lock);
1835 }
1836
1837 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1838 {
1839 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1840 fc_fabric_logoff(lport);
1841 fc_lport_destroy(lport);
1842 }
1843
1844 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1845 {
1846 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1847 struct fc_lport *lport;
1848 struct fc_lport *vport;
1849
1850 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1851 return;
1852
1853 lport = ctlr->lp;
1854 bnx2fc_port_shutdown(lport);
1855
1856 mutex_lock(&lport->lp_mutex);
1857 list_for_each_entry(vport, &lport->vports, list)
1858 fc_host_port_type(vport->host) =
1859 FC_PORTTYPE_UNKNOWN;
1860 mutex_unlock(&lport->lp_mutex);
1861 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1862 fcoe_ctlr_link_down(ctlr);
1863 fcoe_clean_pending_queue(lport);
1864 }
1865
1866 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1867 {
1868 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1869 int rc = -1;
1870 int i = HZ;
1871
1872 rc = bnx2fc_bind_adapter_devices(hba);
1873 if (rc) {
1874 printk(KERN_ALERT PFX
1875 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1876 goto err_out;
1877 }
1878
1879 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1880 if (rc) {
1881 printk(KERN_ALERT PFX
1882 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1883 goto err_unbind;
1884 }
1885
1886 /*
1887 * Wait until the adapter init message is complete, and adapter
1888 * state is UP.
1889 */
1890 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1891 msleep(BNX2FC_INIT_POLL_TIME);
1892
1893 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1894 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1895 "Ignoring...\n",
1896 hba->cnic->netdev->name);
1897 rc = -1;
1898 goto err_unbind;
1899 }
1900
1901
1902 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1903 return 0;
1904
1905 err_unbind:
1906 bnx2fc_unbind_adapter_devices(hba);
1907 err_out:
1908 return rc;
1909 }
1910
1911 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1912 {
1913 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1914 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1915 init_timer(&hba->destroy_timer);
1916 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1917 jiffies;
1918 hba->destroy_timer.function = bnx2fc_destroy_timer;
1919 hba->destroy_timer.data = (unsigned long)hba;
1920 add_timer(&hba->destroy_timer);
1921 wait_event_interruptible(hba->destroy_wait,
1922 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1923 &hba->flags));
1924 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1925 /* This should never happen */
1926 if (signal_pending(current))
1927 flush_signals(current);
1928
1929 del_timer_sync(&hba->destroy_timer);
1930 }
1931 bnx2fc_unbind_adapter_devices(hba);
1932 }
1933 }
1934
1935 /**
1936 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1937 *
1938 * @handle: transport handle pointing to adapter structure
1939 *
1940 * Driver checks if adapter is already in shutdown mode, if not start
1941 * the shutdown process.
1942 */
1943 static void bnx2fc_ulp_stop(void *handle)
1944 {
1945 struct bnx2fc_hba *hba = handle;
1946 struct bnx2fc_interface *interface;
1947
1948 printk(KERN_ERR "ULP_STOP\n");
1949
1950 mutex_lock(&bnx2fc_dev_lock);
1951 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1952 goto exit;
1953 list_for_each_entry(interface, &if_list, list) {
1954 if (interface->hba == hba)
1955 bnx2fc_stop(interface);
1956 }
1957 BUG_ON(hba->num_ofld_sess != 0);
1958
1959 mutex_lock(&hba->hba_mutex);
1960 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1961 clear_bit(ADAPTER_STATE_GOING_DOWN,
1962 &hba->adapter_state);
1963
1964 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1965 mutex_unlock(&hba->hba_mutex);
1966
1967 bnx2fc_fw_destroy(hba);
1968 exit:
1969 mutex_unlock(&bnx2fc_dev_lock);
1970 }
1971
1972 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1973 {
1974 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1975 struct fc_lport *lport;
1976 int wait_cnt = 0;
1977
1978 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1979 /* Kick off FIP/FLOGI */
1980 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1981 printk(KERN_ERR PFX "Init not done yet\n");
1982 return;
1983 }
1984
1985 lport = ctlr->lp;
1986 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1987
1988 if (!bnx2fc_link_ok(lport) && interface->enabled) {
1989 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1990 fcoe_ctlr_link_up(ctlr);
1991 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1992 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1993 }
1994
1995 /* wait for the FCF to be selected before issuing FLOGI */
1996 while (!ctlr->sel_fcf) {
1997 msleep(250);
1998 /* give up after 3 secs */
1999 if (++wait_cnt > 12)
2000 break;
2001 }
2002
2003 /* Reset max receive frame size to default */
2004 if (fc_set_mfs(lport, BNX2FC_MFS))
2005 return;
2006
2007 fc_lport_init(lport);
2008 fc_fabric_login(lport);
2009 }
2010
2011
2012 /**
2013 * bnx2fc_ulp_init - Initialize an adapter instance
2014 *
2015 * @dev : cnic device handle
2016 * Called from cnic_register_driver() context to initialize all
2017 * enumerated cnic devices. This routine allocates adapter structure
2018 * and other device specific resources.
2019 */
2020 static void bnx2fc_ulp_init(struct cnic_dev *dev)
2021 {
2022 struct bnx2fc_hba *hba;
2023 int rc = 0;
2024
2025 BNX2FC_MISC_DBG("Entered %s\n", __func__);
2026 /* bnx2fc works only when bnx2x is loaded */
2027 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
2028 (dev->max_fcoe_conn == 0)) {
2029 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
2030 " flags: %lx fcoe_conn: %d\n",
2031 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
2032 return;
2033 }
2034
2035 hba = bnx2fc_hba_create(dev);
2036 if (!hba) {
2037 printk(KERN_ERR PFX "hba initialization failed\n");
2038 return;
2039 }
2040
2041 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
2042
2043 /* Add HBA to the adapter list */
2044 mutex_lock(&bnx2fc_dev_lock);
2045 list_add_tail(&hba->list, &adapter_list);
2046 adapter_count++;
2047 mutex_unlock(&bnx2fc_dev_lock);
2048
2049 dev->fcoe_cap = &hba->fcoe_cap;
2050 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2051 rc = dev->register_device(dev, CNIC_ULP_FCOE,
2052 (void *) hba);
2053 if (rc)
2054 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2055 else
2056 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2057 }
2058
2059 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2060 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2061 {
2062 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2063
2064 if (interface->enabled == true) {
2065 if (!ctlr->lp) {
2066 pr_err(PFX "__bnx2fc_disable: lport not found\n");
2067 return -ENODEV;
2068 } else {
2069 interface->enabled = false;
2070 fcoe_ctlr_link_down(ctlr);
2071 fcoe_clean_pending_queue(ctlr->lp);
2072 }
2073 }
2074 return 0;
2075 }
2076
2077 /**
2078 * Deperecated: Use bnx2fc_enabled()
2079 */
2080 static int bnx2fc_disable(struct net_device *netdev)
2081 {
2082 struct bnx2fc_interface *interface;
2083 struct fcoe_ctlr *ctlr;
2084 int rc = 0;
2085
2086 rtnl_lock();
2087 mutex_lock(&bnx2fc_dev_lock);
2088
2089 interface = bnx2fc_interface_lookup(netdev);
2090 ctlr = bnx2fc_to_ctlr(interface);
2091
2092 if (!interface) {
2093 rc = -ENODEV;
2094 pr_err(PFX "bnx2fc_disable: interface not found\n");
2095 } else {
2096 rc = __bnx2fc_disable(ctlr);
2097 }
2098 mutex_unlock(&bnx2fc_dev_lock);
2099 rtnl_unlock();
2100 return rc;
2101 }
2102
2103 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2104 struct cnic_fc_npiv_tbl *npiv_tbl)
2105 {
2106 struct fc_vport_identifiers vpid;
2107 uint i, created = 0;
2108
2109 if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2110 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2111 goto done;
2112 }
2113
2114 /* Sanity check the first entry to make sure it's not 0 */
2115 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2116 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2117 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2118 goto done;
2119 }
2120
2121 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2122 vpid.vport_type = FC_PORTTYPE_NPIV;
2123 vpid.disable = false;
2124
2125 for (i = 0; i < npiv_tbl->count; i++) {
2126 vpid.node_name = wwn_to_u64(npiv_tbl->wwnn[i]);
2127 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2128 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2129 "NPIV[%u]:%016llx-%016llx",
2130 created, vpid.port_name, vpid.node_name);
2131 if (fc_vport_create(lport->host, 0, &vpid))
2132 created++;
2133 else
2134 BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2135 }
2136 done:
2137 return created;
2138 }
2139
2140 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2141 {
2142 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2143 struct bnx2fc_hba *hba;
2144 struct cnic_fc_npiv_tbl *npiv_tbl;
2145 struct fc_lport *lport;
2146
2147 if (interface->enabled == false) {
2148 if (!ctlr->lp) {
2149 pr_err(PFX "__bnx2fc_enable: lport not found\n");
2150 return -ENODEV;
2151 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2152 fcoe_ctlr_link_up(ctlr);
2153 interface->enabled = true;
2154 }
2155 }
2156
2157 /* Create static NPIV ports if any are contained in NVRAM */
2158 hba = interface->hba;
2159 lport = ctlr->lp;
2160
2161 if (!hba)
2162 goto done;
2163
2164 if (!hba->cnic)
2165 goto done;
2166
2167 if (!lport)
2168 goto done;
2169
2170 if (!lport->host)
2171 goto done;
2172
2173 if (!hba->cnic->get_fc_npiv_tbl)
2174 goto done;
2175
2176 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2177 if (!npiv_tbl)
2178 goto done;
2179
2180 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2181 goto done_free;
2182
2183 bnx2fc_npiv_create_vports(lport, npiv_tbl);
2184 done_free:
2185 kfree(npiv_tbl);
2186 done:
2187 return 0;
2188 }
2189
2190 /**
2191 * Deprecated: Use bnx2fc_enabled()
2192 */
2193 static int bnx2fc_enable(struct net_device *netdev)
2194 {
2195 struct bnx2fc_interface *interface;
2196 struct fcoe_ctlr *ctlr;
2197 int rc = 0;
2198
2199 rtnl_lock();
2200 mutex_lock(&bnx2fc_dev_lock);
2201
2202 interface = bnx2fc_interface_lookup(netdev);
2203 ctlr = bnx2fc_to_ctlr(interface);
2204 if (!interface) {
2205 rc = -ENODEV;
2206 pr_err(PFX "bnx2fc_enable: interface not found\n");
2207 } else {
2208 rc = __bnx2fc_enable(ctlr);
2209 }
2210
2211 mutex_unlock(&bnx2fc_dev_lock);
2212 rtnl_unlock();
2213 return rc;
2214 }
2215
2216 /**
2217 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2218 * @cdev: The FCoE Controller that is being enabled or disabled
2219 *
2220 * fcoe_sysfs will ensure that the state of 'enabled' has
2221 * changed, so no checking is necessary here. This routine simply
2222 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2223 * When those routines are removed the functionality can be merged
2224 * here.
2225 */
2226 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2227 {
2228 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2229
2230 switch (cdev->enabled) {
2231 case FCOE_CTLR_ENABLED:
2232 return __bnx2fc_enable(ctlr);
2233 case FCOE_CTLR_DISABLED:
2234 return __bnx2fc_disable(ctlr);
2235 case FCOE_CTLR_UNUSED:
2236 default:
2237 return -ENOTSUPP;
2238 };
2239 }
2240
2241 enum bnx2fc_create_link_state {
2242 BNX2FC_CREATE_LINK_DOWN,
2243 BNX2FC_CREATE_LINK_UP,
2244 };
2245
2246 /**
2247 * _bnx2fc_create() - Create bnx2fc FCoE interface
2248 * @netdev : The net_device object the Ethernet interface to create on
2249 * @fip_mode: The FIP mode for this creation
2250 * @link_state: The ctlr link state on creation
2251 *
2252 * Called from either the libfcoe 'create' module parameter
2253 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2254 *
2255 * libfcoe's 'create' module parameter is deprecated so some
2256 * consolidation of code can be done when that interface is
2257 * removed.
2258 *
2259 * Returns: 0 for success
2260 */
2261 static int _bnx2fc_create(struct net_device *netdev,
2262 enum fip_mode fip_mode,
2263 enum bnx2fc_create_link_state link_state)
2264 {
2265 struct fcoe_ctlr_device *cdev;
2266 struct fcoe_ctlr *ctlr;
2267 struct bnx2fc_interface *interface;
2268 struct bnx2fc_hba *hba;
2269 struct net_device *phys_dev = netdev;
2270 struct fc_lport *lport;
2271 struct ethtool_drvinfo drvinfo;
2272 int rc = 0;
2273 int vlan_id = 0;
2274
2275 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2276 if (fip_mode != FIP_MODE_FABRIC) {
2277 printk(KERN_ERR "fip mode not FABRIC\n");
2278 return -EIO;
2279 }
2280
2281 rtnl_lock();
2282
2283 mutex_lock(&bnx2fc_dev_lock);
2284
2285 if (!try_module_get(THIS_MODULE)) {
2286 rc = -EINVAL;
2287 goto mod_err;
2288 }
2289
2290 /* obtain physical netdev */
2291 if (is_vlan_dev(netdev))
2292 phys_dev = vlan_dev_real_dev(netdev);
2293
2294 /* verify if the physical device is a netxtreme2 device */
2295 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2296 memset(&drvinfo, 0, sizeof(drvinfo));
2297 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2298 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2299 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2300 rc = -EINVAL;
2301 goto netdev_err;
2302 }
2303 } else {
2304 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2305 rc = -EINVAL;
2306 goto netdev_err;
2307 }
2308
2309 /* obtain interface and initialize rest of the structure */
2310 hba = bnx2fc_hba_lookup(phys_dev);
2311 if (!hba) {
2312 rc = -ENODEV;
2313 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2314 goto netdev_err;
2315 }
2316
2317 if (bnx2fc_interface_lookup(netdev)) {
2318 rc = -EEXIST;
2319 goto netdev_err;
2320 }
2321
2322 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2323 if (!interface) {
2324 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2325 rc = -ENOMEM;
2326 goto ifput_err;
2327 }
2328
2329 if (is_vlan_dev(netdev)) {
2330 vlan_id = vlan_dev_vlan_id(netdev);
2331 interface->vlan_enabled = 1;
2332 }
2333
2334 ctlr = bnx2fc_to_ctlr(interface);
2335 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2336 interface->vlan_id = vlan_id;
2337 interface->tm_timeout = BNX2FC_TM_TIMEOUT;
2338
2339 interface->timer_work_queue =
2340 create_singlethread_workqueue("bnx2fc_timer_wq");
2341 if (!interface->timer_work_queue) {
2342 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2343 rc = -EINVAL;
2344 goto ifput_err;
2345 }
2346
2347 lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2348 if (!lport) {
2349 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2350 netdev->name);
2351 rc = -EINVAL;
2352 goto if_create_err;
2353 }
2354
2355 /* Add interface to if_list */
2356 list_add_tail(&interface->list, &if_list);
2357
2358 lport->boot_time = jiffies;
2359
2360 /* Make this master N_port */
2361 ctlr->lp = lport;
2362
2363 if (link_state == BNX2FC_CREATE_LINK_UP)
2364 cdev->enabled = FCOE_CTLR_ENABLED;
2365 else
2366 cdev->enabled = FCOE_CTLR_DISABLED;
2367
2368 if (link_state == BNX2FC_CREATE_LINK_UP &&
2369 !bnx2fc_link_ok(lport)) {
2370 fcoe_ctlr_link_up(ctlr);
2371 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2372 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2373 }
2374
2375 BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2376 bnx2fc_start_disc(interface);
2377
2378 if (link_state == BNX2FC_CREATE_LINK_UP)
2379 interface->enabled = true;
2380
2381 /*
2382 * Release from kref_init in bnx2fc_interface_setup, on success
2383 * lport should be holding a reference taken in bnx2fc_if_create
2384 */
2385 bnx2fc_interface_put(interface);
2386 /* put netdev that was held while calling dev_get_by_name */
2387 mutex_unlock(&bnx2fc_dev_lock);
2388 rtnl_unlock();
2389 return 0;
2390
2391 if_create_err:
2392 destroy_workqueue(interface->timer_work_queue);
2393 ifput_err:
2394 bnx2fc_net_cleanup(interface);
2395 bnx2fc_interface_put(interface);
2396 goto mod_err;
2397 netdev_err:
2398 module_put(THIS_MODULE);
2399 mod_err:
2400 mutex_unlock(&bnx2fc_dev_lock);
2401 rtnl_unlock();
2402 return rc;
2403 }
2404
2405 /**
2406 * bnx2fc_create() - Create a bnx2fc interface
2407 * @netdev : The net_device object the Ethernet interface to create on
2408 * @fip_mode: The FIP mode for this creation
2409 *
2410 * Called from fcoe transport
2411 *
2412 * Returns: 0 for success
2413 */
2414 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode)
2415 {
2416 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2417 }
2418
2419 /**
2420 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2421 * @netdev: The net_device to be used by the allocated FCoE Controller
2422 *
2423 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2424 * in a link_down state. The allows the user an opportunity to configure
2425 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2426 *
2427 * Creating in with this routine starts the FCoE Controller in Fabric
2428 * mode. The user can change to VN2VN or another mode before enabling.
2429 */
2430 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2431 {
2432 return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2433 BNX2FC_CREATE_LINK_DOWN);
2434 }
2435
2436 /**
2437 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2438 *
2439 * @cnic: Pointer to cnic device instance
2440 *
2441 **/
2442 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2443 {
2444 struct bnx2fc_hba *hba;
2445
2446 /* Called with bnx2fc_dev_lock held */
2447 list_for_each_entry(hba, &adapter_list, list) {
2448 if (hba->cnic == cnic)
2449 return hba;
2450 }
2451 return NULL;
2452 }
2453
2454 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2455 *netdev)
2456 {
2457 struct bnx2fc_interface *interface;
2458
2459 /* Called with bnx2fc_dev_lock held */
2460 list_for_each_entry(interface, &if_list, list) {
2461 if (interface->netdev == netdev)
2462 return interface;
2463 }
2464 return NULL;
2465 }
2466
2467 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2468 *phys_dev)
2469 {
2470 struct bnx2fc_hba *hba;
2471
2472 /* Called with bnx2fc_dev_lock held */
2473 list_for_each_entry(hba, &adapter_list, list) {
2474 if (hba->phys_dev == phys_dev)
2475 return hba;
2476 }
2477 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2478 return NULL;
2479 }
2480
2481 /**
2482 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2483 *
2484 * @dev cnic device handle
2485 */
2486 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2487 {
2488 struct bnx2fc_hba *hba;
2489 struct bnx2fc_interface *interface, *tmp;
2490
2491 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2492
2493 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2494 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2495 dev->netdev->name, dev->flags);
2496 return;
2497 }
2498
2499 mutex_lock(&bnx2fc_dev_lock);
2500 hba = bnx2fc_find_hba_for_cnic(dev);
2501 if (!hba) {
2502 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2503 dev);
2504 mutex_unlock(&bnx2fc_dev_lock);
2505 return;
2506 }
2507
2508 list_del_init(&hba->list);
2509 adapter_count--;
2510
2511 list_for_each_entry_safe(interface, tmp, &if_list, list)
2512 /* destroy not called yet, move to quiesced list */
2513 if (interface->hba == hba)
2514 __bnx2fc_destroy(interface);
2515 mutex_unlock(&bnx2fc_dev_lock);
2516
2517 /* Ensure ALL destroy work has been completed before return */
2518 flush_workqueue(bnx2fc_wq);
2519
2520 bnx2fc_ulp_stop(hba);
2521 /* unregister cnic device */
2522 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2523 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2524 bnx2fc_hba_destroy(hba);
2525 }
2526
2527 /**
2528 * bnx2fc_fcoe_reset - Resets the fcoe
2529 *
2530 * @shost: shost the reset is from
2531 *
2532 * Returns: always 0
2533 */
2534 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2535 {
2536 struct fc_lport *lport = shost_priv(shost);
2537 fc_lport_reset(lport);
2538 return 0;
2539 }
2540
2541
2542 static bool bnx2fc_match(struct net_device *netdev)
2543 {
2544 struct net_device *phys_dev = netdev;
2545
2546 mutex_lock(&bnx2fc_dev_lock);
2547 if (is_vlan_dev(netdev))
2548 phys_dev = vlan_dev_real_dev(netdev);
2549
2550 if (bnx2fc_hba_lookup(phys_dev)) {
2551 mutex_unlock(&bnx2fc_dev_lock);
2552 return true;
2553 }
2554
2555 mutex_unlock(&bnx2fc_dev_lock);
2556 return false;
2557 }
2558
2559
2560 static struct fcoe_transport bnx2fc_transport = {
2561 .name = {"bnx2fc"},
2562 .attached = false,
2563 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2564 .alloc = bnx2fc_ctlr_alloc,
2565 .match = bnx2fc_match,
2566 .create = bnx2fc_create,
2567 .destroy = bnx2fc_destroy,
2568 .enable = bnx2fc_enable,
2569 .disable = bnx2fc_disable,
2570 };
2571
2572 /**
2573 * bnx2fc_percpu_thread_create - Create a receive thread for an
2574 * online CPU
2575 *
2576 * @cpu: cpu index for the online cpu
2577 */
2578 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2579 {
2580 struct bnx2fc_percpu_s *p;
2581 struct task_struct *thread;
2582
2583 p = &per_cpu(bnx2fc_percpu, cpu);
2584
2585 thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2586 (void *)p, cpu_to_node(cpu),
2587 "bnx2fc_thread/%d", cpu);
2588 /* bind thread to the cpu */
2589 if (likely(!IS_ERR(thread))) {
2590 kthread_bind(thread, cpu);
2591 p->iothread = thread;
2592 wake_up_process(thread);
2593 }
2594 }
2595
2596 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2597 {
2598 struct bnx2fc_percpu_s *p;
2599 struct task_struct *thread;
2600 struct bnx2fc_work *work, *tmp;
2601
2602 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2603
2604 /* Prevent any new work from being queued for this CPU */
2605 p = &per_cpu(bnx2fc_percpu, cpu);
2606 spin_lock_bh(&p->fp_work_lock);
2607 thread = p->iothread;
2608 p->iothread = NULL;
2609
2610
2611 /* Free all work in the list */
2612 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2613 list_del_init(&work->list);
2614 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2615 kfree(work);
2616 }
2617
2618 spin_unlock_bh(&p->fp_work_lock);
2619
2620 if (thread)
2621 kthread_stop(thread);
2622 }
2623
2624
2625 static int bnx2fc_cpu_online(unsigned int cpu)
2626 {
2627 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2628 bnx2fc_percpu_thread_create(cpu);
2629 return 0;
2630 }
2631
2632 static int bnx2fc_cpu_dead(unsigned int cpu)
2633 {
2634 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2635 bnx2fc_percpu_thread_destroy(cpu);
2636 return 0;
2637 }
2638
2639 static int bnx2fc_slave_configure(struct scsi_device *sdev)
2640 {
2641 if (!bnx2fc_queue_depth)
2642 return 0;
2643
2644 scsi_change_queue_depth(sdev, bnx2fc_queue_depth);
2645 return 0;
2646 }
2647
2648 static enum cpuhp_state bnx2fc_online_state;
2649
2650 /**
2651 * bnx2fc_mod_init - module init entry point
2652 *
2653 * Initialize driver wide global data structures, and register
2654 * with cnic module
2655 **/
2656 static int __init bnx2fc_mod_init(void)
2657 {
2658 struct fcoe_percpu_s *bg;
2659 struct task_struct *l2_thread;
2660 int rc = 0;
2661 unsigned int cpu = 0;
2662 struct bnx2fc_percpu_s *p;
2663
2664 printk(KERN_INFO PFX "%s", version);
2665
2666 /* register as a fcoe transport */
2667 rc = fcoe_transport_attach(&bnx2fc_transport);
2668 if (rc) {
2669 printk(KERN_ERR "failed to register an fcoe transport, check "
2670 "if libfcoe is loaded\n");
2671 goto out;
2672 }
2673
2674 INIT_LIST_HEAD(&adapter_list);
2675 INIT_LIST_HEAD(&if_list);
2676 mutex_init(&bnx2fc_dev_lock);
2677 adapter_count = 0;
2678
2679 /* Attach FC transport template */
2680 rc = bnx2fc_attach_transport();
2681 if (rc)
2682 goto detach_ft;
2683
2684 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2685 if (!bnx2fc_wq) {
2686 rc = -ENOMEM;
2687 goto release_bt;
2688 }
2689
2690 bg = &bnx2fc_global;
2691 skb_queue_head_init(&bg->fcoe_rx_list);
2692 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2693 (void *)bg,
2694 "bnx2fc_l2_thread");
2695 if (IS_ERR(l2_thread)) {
2696 rc = PTR_ERR(l2_thread);
2697 goto free_wq;
2698 }
2699 wake_up_process(l2_thread);
2700 spin_lock_bh(&bg->fcoe_rx_list.lock);
2701 bg->kthread = l2_thread;
2702 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2703
2704 for_each_possible_cpu(cpu) {
2705 p = &per_cpu(bnx2fc_percpu, cpu);
2706 INIT_LIST_HEAD(&p->work_list);
2707 spin_lock_init(&p->fp_work_lock);
2708 }
2709
2710 get_online_cpus();
2711
2712 for_each_online_cpu(cpu)
2713 bnx2fc_percpu_thread_create(cpu);
2714
2715 rc = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
2716 "scsi/bnx2fc:online",
2717 bnx2fc_cpu_online, NULL);
2718 if (rc < 0)
2719 goto stop_threads;
2720 bnx2fc_online_state = rc;
2721
2722 cpuhp_setup_state_nocalls(CPUHP_SCSI_BNX2FC_DEAD, "scsi/bnx2fc:dead",
2723 NULL, bnx2fc_cpu_dead);
2724 put_online_cpus();
2725
2726 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2727
2728 return 0;
2729
2730 stop_threads:
2731 for_each_online_cpu(cpu)
2732 bnx2fc_percpu_thread_destroy(cpu);
2733 put_online_cpus();
2734 kthread_stop(l2_thread);
2735 free_wq:
2736 destroy_workqueue(bnx2fc_wq);
2737 release_bt:
2738 bnx2fc_release_transport();
2739 detach_ft:
2740 fcoe_transport_detach(&bnx2fc_transport);
2741 out:
2742 return rc;
2743 }
2744
2745 static void __exit bnx2fc_mod_exit(void)
2746 {
2747 LIST_HEAD(to_be_deleted);
2748 struct bnx2fc_hba *hba, *next;
2749 struct fcoe_percpu_s *bg;
2750 struct task_struct *l2_thread;
2751 struct sk_buff *skb;
2752 unsigned int cpu = 0;
2753
2754 /*
2755 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2756 * it will have higher precedence than bnx2fc_dev_lock.
2757 * unregister_device() cannot be called with bnx2fc_dev_lock
2758 * held.
2759 */
2760 mutex_lock(&bnx2fc_dev_lock);
2761 list_splice_init(&adapter_list, &to_be_deleted);
2762 adapter_count = 0;
2763 mutex_unlock(&bnx2fc_dev_lock);
2764
2765 /* Unregister with cnic */
2766 list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2767 list_del_init(&hba->list);
2768 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2769 hba);
2770 bnx2fc_ulp_stop(hba);
2771 /* unregister cnic device */
2772 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2773 &hba->reg_with_cnic))
2774 hba->cnic->unregister_device(hba->cnic,
2775 CNIC_ULP_FCOE);
2776 bnx2fc_hba_destroy(hba);
2777 }
2778 cnic_unregister_driver(CNIC_ULP_FCOE);
2779
2780 /* Destroy global thread */
2781 bg = &bnx2fc_global;
2782 spin_lock_bh(&bg->fcoe_rx_list.lock);
2783 l2_thread = bg->kthread;
2784 bg->kthread = NULL;
2785 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2786 kfree_skb(skb);
2787
2788 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2789
2790 if (l2_thread)
2791 kthread_stop(l2_thread);
2792
2793 get_online_cpus();
2794 /* Destroy per cpu threads */
2795 for_each_online_cpu(cpu) {
2796 bnx2fc_percpu_thread_destroy(cpu);
2797 }
2798
2799 cpuhp_remove_state_nocalls(bnx2fc_online_state);
2800 cpuhp_remove_state_nocalls(CPUHP_SCSI_BNX2FC_DEAD);
2801
2802 put_online_cpus();
2803
2804 destroy_workqueue(bnx2fc_wq);
2805 /*
2806 * detach from scsi transport
2807 * must happen after all destroys are done
2808 */
2809 bnx2fc_release_transport();
2810
2811 /* detach from fcoe transport */
2812 fcoe_transport_detach(&bnx2fc_transport);
2813 }
2814
2815 module_init(bnx2fc_mod_init);
2816 module_exit(bnx2fc_mod_exit);
2817
2818 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2819 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2820 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2821 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2822 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2823 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2824 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2825 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2826
2827 .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2828 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2829 };
2830
2831 static struct fc_function_template bnx2fc_transport_function = {
2832 .show_host_node_name = 1,
2833 .show_host_port_name = 1,
2834 .show_host_supported_classes = 1,
2835 .show_host_supported_fc4s = 1,
2836 .show_host_active_fc4s = 1,
2837 .show_host_maxframe_size = 1,
2838
2839 .show_host_port_id = 1,
2840 .show_host_supported_speeds = 1,
2841 .get_host_speed = fc_get_host_speed,
2842 .show_host_speed = 1,
2843 .show_host_port_type = 1,
2844 .get_host_port_state = fc_get_host_port_state,
2845 .show_host_port_state = 1,
2846 .show_host_symbolic_name = 1,
2847
2848 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2849 sizeof(struct bnx2fc_rport)),
2850 .show_rport_maxframe_size = 1,
2851 .show_rport_supported_classes = 1,
2852
2853 .show_host_fabric_name = 1,
2854 .show_starget_node_name = 1,
2855 .show_starget_port_name = 1,
2856 .show_starget_port_id = 1,
2857 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2858 .show_rport_dev_loss_tmo = 1,
2859 .get_fc_host_stats = bnx2fc_get_host_stats,
2860
2861 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2862
2863 .terminate_rport_io = fc_rport_terminate_io,
2864
2865 .vport_create = bnx2fc_vport_create,
2866 .vport_delete = bnx2fc_vport_destroy,
2867 .vport_disable = bnx2fc_vport_disable,
2868 .bsg_request = fc_lport_bsg_request,
2869 };
2870
2871 static struct fc_function_template bnx2fc_vport_xport_function = {
2872 .show_host_node_name = 1,
2873 .show_host_port_name = 1,
2874 .show_host_supported_classes = 1,
2875 .show_host_supported_fc4s = 1,
2876 .show_host_active_fc4s = 1,
2877 .show_host_maxframe_size = 1,
2878
2879 .show_host_port_id = 1,
2880 .show_host_supported_speeds = 1,
2881 .get_host_speed = fc_get_host_speed,
2882 .show_host_speed = 1,
2883 .show_host_port_type = 1,
2884 .get_host_port_state = fc_get_host_port_state,
2885 .show_host_port_state = 1,
2886 .show_host_symbolic_name = 1,
2887
2888 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2889 sizeof(struct bnx2fc_rport)),
2890 .show_rport_maxframe_size = 1,
2891 .show_rport_supported_classes = 1,
2892
2893 .show_host_fabric_name = 1,
2894 .show_starget_node_name = 1,
2895 .show_starget_port_name = 1,
2896 .show_starget_port_id = 1,
2897 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2898 .show_rport_dev_loss_tmo = 1,
2899 .get_fc_host_stats = fc_get_host_stats,
2900 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2901 .terminate_rport_io = fc_rport_terminate_io,
2902 .bsg_request = fc_lport_bsg_request,
2903 };
2904
2905 /*
2906 * Additional scsi_host attributes.
2907 */
2908 static ssize_t
2909 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
2910 char *buf)
2911 {
2912 struct Scsi_Host *shost = class_to_shost(dev);
2913 struct fc_lport *lport = shost_priv(shost);
2914 struct fcoe_port *port = lport_priv(lport);
2915 struct bnx2fc_interface *interface = port->priv;
2916
2917 sprintf(buf, "%u\n", interface->tm_timeout);
2918 return strlen(buf);
2919 }
2920
2921 static ssize_t
2922 bnx2fc_tm_timeout_store(struct device *dev,
2923 struct device_attribute *attr, const char *buf, size_t count)
2924 {
2925 struct Scsi_Host *shost = class_to_shost(dev);
2926 struct fc_lport *lport = shost_priv(shost);
2927 struct fcoe_port *port = lport_priv(lport);
2928 struct bnx2fc_interface *interface = port->priv;
2929 int rval, val;
2930
2931 rval = kstrtouint(buf, 10, &val);
2932 if (rval)
2933 return rval;
2934 if (val > 255)
2935 return -ERANGE;
2936
2937 interface->tm_timeout = (u8)val;
2938 return strlen(buf);
2939 }
2940
2941 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
2942 bnx2fc_tm_timeout_store);
2943
2944 static struct device_attribute *bnx2fc_host_attrs[] = {
2945 &dev_attr_tm_timeout,
2946 NULL,
2947 };
2948
2949 /**
2950 * scsi_host_template structure used while registering with SCSI-ml
2951 */
2952 static struct scsi_host_template bnx2fc_shost_template = {
2953 .module = THIS_MODULE,
2954 .name = "QLogic Offload FCoE Initiator",
2955 .queuecommand = bnx2fc_queuecommand,
2956 .eh_timed_out = fc_eh_timed_out,
2957 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2958 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2959 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2960 .eh_host_reset_handler = fc_eh_host_reset,
2961 .slave_alloc = fc_slave_alloc,
2962 .change_queue_depth = scsi_change_queue_depth,
2963 .this_id = -1,
2964 .cmd_per_lun = 3,
2965 .use_clustering = ENABLE_CLUSTERING,
2966 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2967 .max_sectors = 1024,
2968 .track_queue_depth = 1,
2969 .slave_configure = bnx2fc_slave_configure,
2970 .shost_attrs = bnx2fc_host_attrs,
2971 };
2972
2973 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2974 .frame_send = bnx2fc_xmit,
2975 .elsct_send = bnx2fc_elsct_send,
2976 .fcp_abort_io = bnx2fc_abort_io,
2977 .fcp_cleanup = bnx2fc_cleanup,
2978 .get_lesb = fcoe_get_lesb,
2979 .rport_event_callback = bnx2fc_rport_event_handler,
2980 };
2981
2982 /**
2983 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2984 * structure carrying callback function pointers
2985 */
2986 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2987 .owner = THIS_MODULE,
2988 .cnic_init = bnx2fc_ulp_init,
2989 .cnic_exit = bnx2fc_ulp_exit,
2990 .cnic_start = bnx2fc_ulp_start,
2991 .cnic_stop = bnx2fc_ulp_stop,
2992 .indicate_kcqes = bnx2fc_indicate_kcqe,
2993 .indicate_netevent = bnx2fc_indicate_netevent,
2994 .cnic_get_stats = bnx2fc_ulp_get_stats,
2995 };
Ubuntu Artful kernel mirror