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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / scsi / bnx2fc / bnx2fc_fcoe.c
blob1cbb431fa6825c54b1f5e3eaeebdbe304f96e6ab
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) 2014-2016 QLogic Corporation
8 * Copyright (c) 2016-2017 Cavium Inc.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation.
13 *
14 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
15 */
16
17 #include "bnx2fc.h"
18
19 static struct list_head adapter_list;
20 static struct list_head if_list;
21 static u32 adapter_count;
22 static DEFINE_MUTEX(bnx2fc_dev_lock);
23 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
24
25 #define DRV_MODULE_NAME "bnx2fc"
26 #define DRV_MODULE_VERSION BNX2FC_VERSION
27 #define DRV_MODULE_RELDATE "October 15, 2015"
28
29
30 static char version[] =
31 "QLogic FCoE Driver " DRV_MODULE_NAME \
32 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
33
34
35 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
36 MODULE_DESCRIPTION("QLogic FCoE Driver");
37 MODULE_LICENSE("GPL");
38 MODULE_VERSION(DRV_MODULE_VERSION);
39
40 #define BNX2FC_MAX_QUEUE_DEPTH 256
41 #define BNX2FC_MIN_QUEUE_DEPTH 32
42 #define FCOE_WORD_TO_BYTE 4
43
44 static struct scsi_transport_template *bnx2fc_transport_template;
45 static struct scsi_transport_template *bnx2fc_vport_xport_template;
46
47 struct workqueue_struct *bnx2fc_wq;
48
49 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
50 * Here the io threads are per cpu but the l2 thread is just one
51 */
52 struct fcoe_percpu_s bnx2fc_global;
53 DEFINE_SPINLOCK(bnx2fc_global_lock);
54
55 static struct cnic_ulp_ops bnx2fc_cnic_cb;
56 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
57 static struct scsi_host_template bnx2fc_shost_template;
58 static struct fc_function_template bnx2fc_transport_function;
59 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
60 static struct fc_function_template bnx2fc_vport_xport_function;
61 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode);
62 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
63 static int bnx2fc_destroy(struct net_device *net_device);
64 static int bnx2fc_enable(struct net_device *netdev);
65 static int bnx2fc_disable(struct net_device *netdev);
66
67 /* fcoe_syfs control interface handlers */
68 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
69 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
70
71 static void bnx2fc_recv_frame(struct sk_buff *skb);
72
73 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
74 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
75 static int bnx2fc_lport_config(struct fc_lport *lport);
76 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
77 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
78 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
79 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
80 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
81 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
82 struct device *parent, int npiv);
83 static void bnx2fc_destroy_work(struct work_struct *work);
84
85 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
86 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
87 *phys_dev);
88 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
89 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
90
91 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
92 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
93
94 static void bnx2fc_port_shutdown(struct fc_lport *lport);
95 static void bnx2fc_stop(struct bnx2fc_interface *interface);
96 static int __init bnx2fc_mod_init(void);
97 static void __exit bnx2fc_mod_exit(void);
98
99 unsigned int bnx2fc_debug_level;
100 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
101 MODULE_PARM_DESC(debug_logging,
102 "Option to enable extended logging,\n"
103 "\t\tDefault is 0 - no logging.\n"
104 "\t\t0x01 - SCSI cmd error, cleanup.\n"
105 "\t\t0x02 - Session setup, cleanup, etc.\n"
106 "\t\t0x04 - lport events, link, mtu, etc.\n"
107 "\t\t0x08 - ELS logs.\n"
108 "\t\t0x10 - fcoe L2 fame related logs.\n"
109 "\t\t0xff - LOG all messages.");
110
111 uint bnx2fc_devloss_tmo;
112 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO);
113 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports "
114 "attached via bnx2fc.");
115
116 uint bnx2fc_max_luns = BNX2FC_MAX_LUN;
117 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO);
118 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default "
119 "0xffff.");
120
121 uint bnx2fc_queue_depth;
122 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO);
123 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices "
124 "attached via bnx2fc.");
125
126 uint bnx2fc_log_fka;
127 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
128 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
129 "initiating a FIP keep alive when debug logging is enabled.");
130
131 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
132 {
133 return ((struct bnx2fc_interface *)
134 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
135 }
136
137 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
138 {
139 struct fcoe_ctlr_device *ctlr_dev =
140 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
141 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
142 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
143
144 fcf_dev->vlan_id = fcoe->vlan_id;
145 }
146
147 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
148 {
149 struct fcoe_percpu_s *bg;
150 struct fcoe_rcv_info *fr;
151 struct sk_buff_head *list;
152 struct sk_buff *skb, *next;
153
154 bg = &bnx2fc_global;
155 spin_lock_bh(&bg->fcoe_rx_list.lock);
156 list = &bg->fcoe_rx_list;
157 skb_queue_walk_safe(list, skb, next) {
158 fr = fcoe_dev_from_skb(skb);
159 if (fr->fr_dev == lp) {
160 __skb_unlink(skb, list);
161 kfree_skb(skb);
162 }
163 }
164 spin_unlock_bh(&bg->fcoe_rx_list.lock);
165 }
166
167 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
168 {
169 int rc;
170 spin_lock(&bnx2fc_global_lock);
171 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
172 spin_unlock(&bnx2fc_global_lock);
173
174 return rc;
175 }
176
177 static void bnx2fc_abort_io(struct fc_lport *lport)
178 {
179 /*
180 * This function is no-op for bnx2fc, but we do
181 * not want to leave it as NULL either, as libfc
182 * can call the default function which is
183 * fc_fcp_abort_io.
184 */
185 }
186
187 static void bnx2fc_cleanup(struct fc_lport *lport)
188 {
189 struct fcoe_port *port = lport_priv(lport);
190 struct bnx2fc_interface *interface = port->priv;
191 struct bnx2fc_hba *hba = interface->hba;
192 struct bnx2fc_rport *tgt;
193 int i;
194
195 BNX2FC_MISC_DBG("Entered %s\n", __func__);
196 mutex_lock(&hba->hba_mutex);
197 spin_lock_bh(&hba->hba_lock);
198 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
199 tgt = hba->tgt_ofld_list[i];
200 if (tgt) {
201 /* Cleanup IOs belonging to requested vport */
202 if (tgt->port == port) {
203 spin_unlock_bh(&hba->hba_lock);
204 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
205 bnx2fc_flush_active_ios(tgt);
206 spin_lock_bh(&hba->hba_lock);
207 }
208 }
209 }
210 spin_unlock_bh(&hba->hba_lock);
211 mutex_unlock(&hba->hba_mutex);
212 }
213
214 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
215 struct fc_frame *fp)
216 {
217 struct fc_rport_priv *rdata = tgt->rdata;
218 struct fc_frame_header *fh;
219 int rc = 0;
220
221 fh = fc_frame_header_get(fp);
222 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
223 "r_ctl = 0x%x\n", rdata->ids.port_id,
224 ntohs(fh->fh_ox_id), fh->fh_r_ctl);
225 if ((fh->fh_type == FC_TYPE_ELS) &&
226 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
227
228 switch (fc_frame_payload_op(fp)) {
229 case ELS_ADISC:
230 rc = bnx2fc_send_adisc(tgt, fp);
231 break;
232 case ELS_LOGO:
233 rc = bnx2fc_send_logo(tgt, fp);
234 break;
235 case ELS_RLS:
236 rc = bnx2fc_send_rls(tgt, fp);
237 break;
238 default:
239 break;
240 }
241 } else if ((fh->fh_type == FC_TYPE_BLS) &&
242 (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
243 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
244 else {
245 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
246 "rctl 0x%x thru non-offload path\n",
247 fh->fh_type, fh->fh_r_ctl);
248 return -ENODEV;
249 }
250 if (rc)
251 return -ENOMEM;
252 else
253 return 0;
254 }
255
256 /**
257 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
258 *
259 * @lport: the associated local port
260 * @fp: the fc_frame to be transmitted
261 */
262 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
263 {
264 struct ethhdr *eh;
265 struct fcoe_crc_eof *cp;
266 struct sk_buff *skb;
267 struct fc_frame_header *fh;
268 struct bnx2fc_interface *interface;
269 struct fcoe_ctlr *ctlr;
270 struct bnx2fc_hba *hba;
271 struct fcoe_port *port;
272 struct fcoe_hdr *hp;
273 struct bnx2fc_rport *tgt;
274 struct fc_stats *stats;
275 u8 sof, eof;
276 u32 crc;
277 unsigned int hlen, tlen, elen;
278 int wlen, rc = 0;
279
280 port = (struct fcoe_port *)lport_priv(lport);
281 interface = port->priv;
282 ctlr = bnx2fc_to_ctlr(interface);
283 hba = interface->hba;
284
285 fh = fc_frame_header_get(fp);
286
287 skb = fp_skb(fp);
288 if (!lport->link_up) {
289 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
290 kfree_skb(skb);
291 return 0;
292 }
293
294 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
295 if (!ctlr->sel_fcf) {
296 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
297 kfree_skb(skb);
298 return -EINVAL;
299 }
300 if (fcoe_ctlr_els_send(ctlr, lport, skb))
301 return 0;
302 }
303
304 sof = fr_sof(fp);
305 eof = fr_eof(fp);
306
307 /*
308 * Snoop the frame header to check if the frame is for
309 * an offloaded session
310 */
311 /*
312 * tgt_ofld_list access is synchronized using
313 * both hba mutex and hba lock. Atleast hba mutex or
314 * hba lock needs to be held for read access.
315 */
316
317 spin_lock_bh(&hba->hba_lock);
318 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
319 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
320 /* This frame is for offloaded session */
321 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
322 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
323 spin_unlock_bh(&hba->hba_lock);
324 rc = bnx2fc_xmit_l2_frame(tgt, fp);
325 if (rc != -ENODEV) {
326 kfree_skb(skb);
327 return rc;
328 }
329 } else {
330 spin_unlock_bh(&hba->hba_lock);
331 }
332
333 elen = sizeof(struct ethhdr);
334 hlen = sizeof(struct fcoe_hdr);
335 tlen = sizeof(struct fcoe_crc_eof);
336 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
337
338 skb->ip_summed = CHECKSUM_NONE;
339 crc = fcoe_fc_crc(fp);
340
341 /* copy port crc and eof to the skb buff */
342 if (skb_is_nonlinear(skb)) {
343 skb_frag_t *frag;
344 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
345 kfree_skb(skb);
346 return -ENOMEM;
347 }
348 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
349 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
350 } else {
351 cp = skb_put(skb, tlen);
352 }
353
354 memset(cp, 0, sizeof(*cp));
355 cp->fcoe_eof = eof;
356 cp->fcoe_crc32 = cpu_to_le32(~crc);
357 if (skb_is_nonlinear(skb)) {
358 kunmap_atomic(cp);
359 cp = NULL;
360 }
361
362 /* adjust skb network/transport offsets to match mac/fcoe/port */
363 skb_push(skb, elen + hlen);
364 skb_reset_mac_header(skb);
365 skb_reset_network_header(skb);
366 skb->mac_len = elen;
367 skb->protocol = htons(ETH_P_FCOE);
368 skb->dev = interface->netdev;
369
370 /* fill up mac and fcoe headers */
371 eh = eth_hdr(skb);
372 eh->h_proto = htons(ETH_P_FCOE);
373 if (ctlr->map_dest)
374 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
375 else
376 /* insert GW address */
377 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
378
379 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
380 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
381 else
382 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
383
384 hp = (struct fcoe_hdr *)(eh + 1);
385 memset(hp, 0, sizeof(*hp));
386 if (FC_FCOE_VER)
387 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
388 hp->fcoe_sof = sof;
389
390 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
391 if (lport->seq_offload && fr_max_payload(fp)) {
392 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
393 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
394 } else {
395 skb_shinfo(skb)->gso_type = 0;
396 skb_shinfo(skb)->gso_size = 0;
397 }
398
399 /*update tx stats */
400 stats = per_cpu_ptr(lport->stats, get_cpu());
401 stats->TxFrames++;
402 stats->TxWords += wlen;
403 put_cpu();
404
405 /* send down to lld */
406 fr_dev(fp) = lport;
407 if (port->fcoe_pending_queue.qlen)
408 fcoe_check_wait_queue(lport, skb);
409 else if (fcoe_start_io(skb))
410 fcoe_check_wait_queue(lport, skb);
411
412 return 0;
413 }
414
415 /**
416 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
417 *
418 * @skb: the receive socket buffer
419 * @dev: associated net device
420 * @ptype: context
421 * @olddev: last device
422 *
423 * This function receives the packet and builds FC frame and passes it up
424 */
425 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
426 struct packet_type *ptype, struct net_device *olddev)
427 {
428 struct fc_lport *lport;
429 struct bnx2fc_interface *interface;
430 struct fcoe_ctlr *ctlr;
431 struct fcoe_rcv_info *fr;
432 struct fcoe_percpu_s *bg;
433 struct sk_buff *tmp_skb;
434
435 interface = container_of(ptype, struct bnx2fc_interface,
436 fcoe_packet_type);
437 ctlr = bnx2fc_to_ctlr(interface);
438 lport = ctlr->lp;
439
440 if (unlikely(lport == NULL)) {
441 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
442 goto err;
443 }
444
445 tmp_skb = skb_share_check(skb, GFP_ATOMIC);
446 if (!tmp_skb)
447 goto err;
448
449 skb = tmp_skb;
450
451 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
452 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
453 goto err;
454 }
455
456 /*
457 * Check for minimum frame length, and make sure required FCoE
458 * and FC headers are pulled into the linear data area.
459 */
460 if (unlikely((skb->len < FCOE_MIN_FRAME) ||
461 !pskb_may_pull(skb, FCOE_HEADER_LEN)))
462 goto err;
463
464 skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
465
466 fr = fcoe_dev_from_skb(skb);
467 fr->fr_dev = lport;
468
469 bg = &bnx2fc_global;
470 spin_lock(&bg->fcoe_rx_list.lock);
471
472 __skb_queue_tail(&bg->fcoe_rx_list, skb);
473 if (bg->fcoe_rx_list.qlen == 1)
474 wake_up_process(bg->kthread);
475
476 spin_unlock(&bg->fcoe_rx_list.lock);
477
478 return 0;
479 err:
480 kfree_skb(skb);
481 return -1;
482 }
483
484 static int bnx2fc_l2_rcv_thread(void *arg)
485 {
486 struct fcoe_percpu_s *bg = arg;
487 struct sk_buff *skb;
488
489 set_user_nice(current, MIN_NICE);
490 set_current_state(TASK_INTERRUPTIBLE);
491 while (!kthread_should_stop()) {
492 schedule();
493 spin_lock_bh(&bg->fcoe_rx_list.lock);
494 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
495 spin_unlock_bh(&bg->fcoe_rx_list.lock);
496 bnx2fc_recv_frame(skb);
497 spin_lock_bh(&bg->fcoe_rx_list.lock);
498 }
499 __set_current_state(TASK_INTERRUPTIBLE);
500 spin_unlock_bh(&bg->fcoe_rx_list.lock);
501 }
502 __set_current_state(TASK_RUNNING);
503 return 0;
504 }
505
506
507 static void bnx2fc_recv_frame(struct sk_buff *skb)
508 {
509 u32 fr_len;
510 struct fc_lport *lport;
511 struct fcoe_rcv_info *fr;
512 struct fc_stats *stats;
513 struct fc_frame_header *fh;
514 struct fcoe_crc_eof crc_eof;
515 struct fc_frame *fp;
516 struct fc_lport *vn_port;
517 struct fcoe_port *port, *phys_port;
518 u8 *mac = NULL;
519 u8 *dest_mac = NULL;
520 struct fcoe_hdr *hp;
521 struct bnx2fc_interface *interface;
522 struct fcoe_ctlr *ctlr;
523
524 fr = fcoe_dev_from_skb(skb);
525 lport = fr->fr_dev;
526 if (unlikely(lport == NULL)) {
527 printk(KERN_ERR PFX "Invalid lport struct\n");
528 kfree_skb(skb);
529 return;
530 }
531
532 if (skb_is_nonlinear(skb))
533 skb_linearize(skb);
534 mac = eth_hdr(skb)->h_source;
535 dest_mac = eth_hdr(skb)->h_dest;
536
537 /* Pull the header */
538 hp = (struct fcoe_hdr *) skb_network_header(skb);
539 fh = (struct fc_frame_header *) skb_transport_header(skb);
540 skb_pull(skb, sizeof(struct fcoe_hdr));
541 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
542
543 fp = (struct fc_frame *)skb;
544 fc_frame_init(fp);
545 fr_dev(fp) = lport;
546 fr_sof(fp) = hp->fcoe_sof;
547 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
548 kfree_skb(skb);
549 return;
550 }
551 fr_eof(fp) = crc_eof.fcoe_eof;
552 fr_crc(fp) = crc_eof.fcoe_crc32;
553 if (pskb_trim(skb, fr_len)) {
554 kfree_skb(skb);
555 return;
556 }
557
558 phys_port = lport_priv(lport);
559 interface = phys_port->priv;
560 ctlr = bnx2fc_to_ctlr(interface);
561
562 fh = fc_frame_header_get(fp);
563
564 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
565 BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n",
566 dest_mac);
567 kfree_skb(skb);
568 return;
569 }
570
571 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
572 if (vn_port) {
573 port = lport_priv(vn_port);
574 if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
575 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
576 kfree_skb(skb);
577 return;
578 }
579 }
580 if (ctlr->state) {
581 if (!ether_addr_equal(mac, ctlr->dest_addr)) {
582 BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n",
583 mac, ctlr->dest_addr);
584 kfree_skb(skb);
585 return;
586 }
587 }
588 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
589 fh->fh_type == FC_TYPE_FCP) {
590 /* Drop FCP data. We dont this in L2 path */
591 kfree_skb(skb);
592 return;
593 }
594 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
595 fh->fh_type == FC_TYPE_ELS) {
596 switch (fc_frame_payload_op(fp)) {
597 case ELS_LOGO:
598 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
599 /* drop non-FIP LOGO */
600 kfree_skb(skb);
601 return;
602 }
603 break;
604 }
605 }
606
607 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
608 /* Drop incoming ABTS */
609 kfree_skb(skb);
610 return;
611 }
612
613 /*
614 * If the destination ID from the frame header does not match what we
615 * have on record for lport and the search for a NPIV port came up
616 * empty then this is not addressed to our port so simply drop it.
617 */
618 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
619 BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
620 lport->port_id, ntoh24(fh->fh_d_id));
621 kfree_skb(skb);
622 return;
623 }
624
625 stats = per_cpu_ptr(lport->stats, smp_processor_id());
626 stats->RxFrames++;
627 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
628
629 if (le32_to_cpu(fr_crc(fp)) !=
630 ~crc32(~0, skb->data, fr_len)) {
631 if (stats->InvalidCRCCount < 5)
632 printk(KERN_WARNING PFX "dropping frame with "
633 "CRC error\n");
634 stats->InvalidCRCCount++;
635 kfree_skb(skb);
636 return;
637 }
638 fc_exch_recv(lport, fp);
639 }
640
641 /**
642 * bnx2fc_percpu_io_thread - thread per cpu for ios
643 *
644 * @arg: ptr to bnx2fc_percpu_info structure
645 */
646 static int bnx2fc_percpu_io_thread(void *arg)
647 {
648 struct bnx2fc_percpu_s *p = arg;
649 struct bnx2fc_work *work, *tmp;
650 LIST_HEAD(work_list);
651
652 set_user_nice(current, MIN_NICE);
653 set_current_state(TASK_INTERRUPTIBLE);
654 while (!kthread_should_stop()) {
655 schedule();
656 spin_lock_bh(&p->fp_work_lock);
657 while (!list_empty(&p->work_list)) {
658 list_splice_init(&p->work_list, &work_list);
659 spin_unlock_bh(&p->fp_work_lock);
660
661 list_for_each_entry_safe(work, tmp, &work_list, list) {
662 list_del_init(&work->list);
663 bnx2fc_process_cq_compl(work->tgt, work->wqe,
664 work->rq_data,
665 work->num_rq,
666 work->task);
667 kfree(work);
668 }
669
670 spin_lock_bh(&p->fp_work_lock);
671 }
672 __set_current_state(TASK_INTERRUPTIBLE);
673 spin_unlock_bh(&p->fp_work_lock);
674 }
675 __set_current_state(TASK_RUNNING);
676
677 return 0;
678 }
679
680 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
681 {
682 struct fc_host_statistics *bnx2fc_stats;
683 struct fc_lport *lport = shost_priv(shost);
684 struct fcoe_port *port = lport_priv(lport);
685 struct bnx2fc_interface *interface = port->priv;
686 struct bnx2fc_hba *hba = interface->hba;
687 struct fcoe_statistics_params *fw_stats;
688 int rc = 0;
689
690 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
691 if (!fw_stats)
692 return NULL;
693
694 mutex_lock(&hba->hba_stats_mutex);
695
696 bnx2fc_stats = fc_get_host_stats(shost);
697
698 init_completion(&hba->stat_req_done);
699 if (bnx2fc_send_stat_req(hba))
700 goto unlock_stats_mutex;
701 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
702 if (!rc) {
703 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
704 goto unlock_stats_mutex;
705 }
706 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
707 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
708 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
709 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
710 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
711 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
712 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
713 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
714 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
715 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
716
717 bnx2fc_stats->dumped_frames = 0;
718 bnx2fc_stats->lip_count = 0;
719 bnx2fc_stats->nos_count = 0;
720 bnx2fc_stats->loss_of_sync_count = 0;
721 bnx2fc_stats->loss_of_signal_count = 0;
722 bnx2fc_stats->prim_seq_protocol_err_count = 0;
723
724 memcpy(&hba->prev_stats, hba->stats_buffer,
725 sizeof(struct fcoe_statistics_params));
726
727 unlock_stats_mutex:
728 mutex_unlock(&hba->hba_stats_mutex);
729 return bnx2fc_stats;
730 }
731
732 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
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 Scsi_Host *shost = lport->host;
738 int rc = 0;
739
740 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
741 shost->max_lun = bnx2fc_max_luns;
742 shost->max_id = BNX2FC_MAX_FCP_TGT;
743 shost->max_channel = 0;
744 if (lport->vport)
745 shost->transportt = bnx2fc_vport_xport_template;
746 else
747 shost->transportt = bnx2fc_transport_template;
748
749 /* Add the new host to SCSI-ml */
750 rc = scsi_add_host(lport->host, dev);
751 if (rc) {
752 printk(KERN_ERR PFX "Error on scsi_add_host\n");
753 return rc;
754 }
755 if (!lport->vport)
756 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
757 snprintf(fc_host_symbolic_name(lport->host), 256,
758 "%s (QLogic %s) v%s over %s",
759 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
760 interface->netdev->name);
761
762 return 0;
763 }
764
765 static int bnx2fc_link_ok(struct fc_lport *lport)
766 {
767 struct fcoe_port *port = lport_priv(lport);
768 struct bnx2fc_interface *interface = port->priv;
769 struct bnx2fc_hba *hba = interface->hba;
770 struct net_device *dev = hba->phys_dev;
771 int rc = 0;
772
773 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
774 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
775 else {
776 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
777 rc = -1;
778 }
779 return rc;
780 }
781
782 /**
783 * bnx2fc_get_link_state - get network link state
784 *
785 * @hba: adapter instance pointer
786 *
787 * updates adapter structure flag based on netdev state
788 */
789 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
790 {
791 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
792 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
793 else
794 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
795 }
796
797 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
798 {
799 struct bnx2fc_hba *hba;
800 struct bnx2fc_interface *interface;
801 struct fcoe_ctlr *ctlr;
802 struct fcoe_port *port;
803 u64 wwnn, wwpn;
804
805 port = lport_priv(lport);
806 interface = port->priv;
807 ctlr = bnx2fc_to_ctlr(interface);
808 hba = interface->hba;
809
810 /* require support for get_pauseparam ethtool op. */
811 if (!hba->phys_dev->ethtool_ops ||
812 !hba->phys_dev->ethtool_ops->get_pauseparam)
813 return -EOPNOTSUPP;
814
815 if (fc_set_mfs(lport, BNX2FC_MFS))
816 return -EINVAL;
817
818 skb_queue_head_init(&port->fcoe_pending_queue);
819 port->fcoe_pending_queue_active = 0;
820 timer_setup(&port->timer, fcoe_queue_timer, 0);
821
822 fcoe_link_speed_update(lport);
823
824 if (!lport->vport) {
825 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
826 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
827 1, 0);
828 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
829 fc_set_wwnn(lport, wwnn);
830
831 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
832 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
833 2, 0);
834
835 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
836 fc_set_wwpn(lport, wwpn);
837 }
838
839 return 0;
840 }
841
842 static void bnx2fc_destroy_timer(struct timer_list *t)
843 {
844 struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer);
845
846 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
847 "Destroy compl not received!!\n");
848 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
849 wake_up_interruptible(&hba->destroy_wait);
850 }
851
852 /**
853 * bnx2fc_indicate_netevent - Generic netdev event handler
854 *
855 * @context: adapter structure pointer
856 * @event: event type
857 * @vlan_id: vlan id - associated vlan id with this event
858 *
859 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
860 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
861 */
862 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
863 u16 vlan_id)
864 {
865 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
866 struct fcoe_ctlr_device *cdev;
867 struct fc_lport *lport;
868 struct fc_lport *vport;
869 struct bnx2fc_interface *interface, *tmp;
870 struct fcoe_ctlr *ctlr;
871 int wait_for_upload = 0;
872 u32 link_possible = 1;
873
874 if (vlan_id != 0 && event != NETDEV_UNREGISTER)
875 return;
876
877 switch (event) {
878 case NETDEV_UP:
879 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
880 printk(KERN_ERR "indicate_netevent: "\
881 "hba is not UP!!\n");
882 break;
883
884 case NETDEV_DOWN:
885 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
886 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
887 link_possible = 0;
888 break;
889
890 case NETDEV_GOING_DOWN:
891 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
892 link_possible = 0;
893 break;
894
895 case NETDEV_CHANGE:
896 break;
897
898 case NETDEV_UNREGISTER:
899 if (!vlan_id)
900 return;
901 mutex_lock(&bnx2fc_dev_lock);
902 list_for_each_entry_safe(interface, tmp, &if_list, list) {
903 if (interface->hba == hba &&
904 interface->vlan_id == (vlan_id & VLAN_VID_MASK))
905 __bnx2fc_destroy(interface);
906 }
907 mutex_unlock(&bnx2fc_dev_lock);
908
909 /* Ensure ALL destroy work has been completed before return */
910 flush_workqueue(bnx2fc_wq);
911 return;
912
913 default:
914 return;
915 }
916
917 mutex_lock(&bnx2fc_dev_lock);
918 list_for_each_entry(interface, &if_list, list) {
919
920 if (interface->hba != hba)
921 continue;
922
923 ctlr = bnx2fc_to_ctlr(interface);
924 lport = ctlr->lp;
925 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
926 interface->netdev->name, event);
927
928 fcoe_link_speed_update(lport);
929
930 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
931
932 if (link_possible && !bnx2fc_link_ok(lport)) {
933 switch (cdev->enabled) {
934 case FCOE_CTLR_DISABLED:
935 pr_info("Link up while interface is disabled.\n");
936 break;
937 case FCOE_CTLR_ENABLED:
938 case FCOE_CTLR_UNUSED:
939 /* Reset max recv frame size to default */
940 fc_set_mfs(lport, BNX2FC_MFS);
941 /*
942 * ctlr link up will only be handled during
943 * enable to avoid sending discovery
944 * solicitation on a stale vlan
945 */
946 if (interface->enabled)
947 fcoe_ctlr_link_up(ctlr);
948 };
949 } else if (fcoe_ctlr_link_down(ctlr)) {
950 switch (cdev->enabled) {
951 case FCOE_CTLR_DISABLED:
952 pr_info("Link down while interface is disabled.\n");
953 break;
954 case FCOE_CTLR_ENABLED:
955 case FCOE_CTLR_UNUSED:
956 mutex_lock(&lport->lp_mutex);
957 list_for_each_entry(vport, &lport->vports, list)
958 fc_host_port_type(vport->host) =
959 FC_PORTTYPE_UNKNOWN;
960 mutex_unlock(&lport->lp_mutex);
961 fc_host_port_type(lport->host) =
962 FC_PORTTYPE_UNKNOWN;
963 per_cpu_ptr(lport->stats,
964 get_cpu())->LinkFailureCount++;
965 put_cpu();
966 fcoe_clean_pending_queue(lport);
967 wait_for_upload = 1;
968 };
969 }
970 }
971 mutex_unlock(&bnx2fc_dev_lock);
972
973 if (wait_for_upload) {
974 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
975 init_waitqueue_head(&hba->shutdown_wait);
976 BNX2FC_MISC_DBG("indicate_netevent "
977 "num_ofld_sess = %d\n",
978 hba->num_ofld_sess);
979 hba->wait_for_link_down = 1;
980 wait_event_interruptible(hba->shutdown_wait,
981 (hba->num_ofld_sess == 0));
982 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
983 hba->num_ofld_sess);
984 hba->wait_for_link_down = 0;
985
986 if (signal_pending(current))
987 flush_signals(current);
988 }
989 }
990
991 static int bnx2fc_libfc_config(struct fc_lport *lport)
992 {
993
994 /* Set the function pointers set by bnx2fc driver */
995 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
996 sizeof(struct libfc_function_template));
997 fc_elsct_init(lport);
998 fc_exch_init(lport);
999 fc_disc_init(lport);
1000 fc_disc_config(lport, lport);
1001 return 0;
1002 }
1003
1004 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
1005 {
1006 int fcoe_min_xid, fcoe_max_xid;
1007
1008 fcoe_min_xid = hba->max_xid + 1;
1009 if (nr_cpu_ids <= 2)
1010 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
1011 else
1012 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
1013 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
1014 fcoe_max_xid, NULL)) {
1015 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
1016 return -ENOMEM;
1017 }
1018
1019 return 0;
1020 }
1021
1022 static int bnx2fc_lport_config(struct fc_lport *lport)
1023 {
1024 lport->link_up = 0;
1025 lport->qfull = 0;
1026 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
1027 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
1028 lport->e_d_tov = 2 * 1000;
1029 lport->r_a_tov = 10 * 1000;
1030
1031 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1032 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1033 lport->does_npiv = 1;
1034
1035 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1036 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1037
1038 /* alloc stats structure */
1039 if (fc_lport_init_stats(lport))
1040 return -ENOMEM;
1041
1042 /* Finish fc_lport configuration */
1043 fc_lport_config(lport);
1044
1045 return 0;
1046 }
1047
1048 /**
1049 * bnx2fc_fip_recv - handle a received FIP frame.
1050 *
1051 * @skb: the received skb
1052 * @dev: associated &net_device
1053 * @ptype: the &packet_type structure which was used to register this handler.
1054 * @orig_dev: original receive &net_device, in case @ dev is a bond.
1055 *
1056 * Returns: 0 for success
1057 */
1058 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1059 struct packet_type *ptype,
1060 struct net_device *orig_dev)
1061 {
1062 struct bnx2fc_interface *interface;
1063 struct fcoe_ctlr *ctlr;
1064 interface = container_of(ptype, struct bnx2fc_interface,
1065 fip_packet_type);
1066 ctlr = bnx2fc_to_ctlr(interface);
1067 fcoe_ctlr_recv(ctlr, skb);
1068 return 0;
1069 }
1070
1071 /**
1072 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1073 *
1074 * @fip: FCoE controller.
1075 * @old: Unicast MAC address to delete if the MAC is non-zero.
1076 * @new: Unicast MAC address to add.
1077 *
1078 * Remove any previously-set unicast MAC filter.
1079 * Add secondary FCoE MAC address filter for our OUI.
1080 */
1081 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1082 {
1083 struct fcoe_port *port = lport_priv(lport);
1084
1085 memcpy(port->data_src_addr, addr, ETH_ALEN);
1086 }
1087
1088 /**
1089 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1090 *
1091 * @lport: libfc port
1092 */
1093 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1094 {
1095 struct fcoe_port *port;
1096
1097 port = (struct fcoe_port *)lport_priv(lport);
1098 return port->data_src_addr;
1099 }
1100
1101 /**
1102 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1103 *
1104 * @fip: FCoE controller.
1105 * @skb: FIP Packet.
1106 */
1107 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1108 {
1109 struct fip_header *fiph;
1110 struct ethhdr *eth_hdr;
1111 u16 op;
1112 u8 sub;
1113
1114 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
1115 eth_hdr = (struct ethhdr *)skb_mac_header(skb);
1116 op = ntohs(fiph->fip_op);
1117 sub = fiph->fip_subcode;
1118
1119 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
1120 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
1121 eth_hdr->h_source, eth_hdr->h_dest);
1122
1123 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1124 dev_queue_xmit(skb);
1125 }
1126
1127 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1128 {
1129 struct Scsi_Host *shost = vport_to_shost(vport);
1130 struct fc_lport *n_port = shost_priv(shost);
1131 struct fcoe_port *port = lport_priv(n_port);
1132 struct bnx2fc_interface *interface = port->priv;
1133 struct net_device *netdev = interface->netdev;
1134 struct fc_lport *vn_port;
1135 int rc;
1136 char buf[32];
1137
1138 rc = fcoe_validate_vport_create(vport);
1139 if (rc) {
1140 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1141 printk(KERN_ERR PFX "Failed to create vport, "
1142 "WWPN (0x%s) already exists\n",
1143 buf);
1144 return rc;
1145 }
1146
1147 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1148 printk(KERN_ERR PFX "vn ports cannot be created on"
1149 "this interface\n");
1150 return -EIO;
1151 }
1152 rtnl_lock();
1153 mutex_lock(&bnx2fc_dev_lock);
1154 vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1155 mutex_unlock(&bnx2fc_dev_lock);
1156 rtnl_unlock();
1157
1158 if (!vn_port) {
1159 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1160 netdev->name);
1161 return -EIO;
1162 }
1163
1164 if (bnx2fc_devloss_tmo)
1165 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
1166
1167 if (disabled) {
1168 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1169 } else {
1170 vn_port->boot_time = jiffies;
1171 fc_lport_init(vn_port);
1172 fc_fabric_login(vn_port);
1173 fc_vport_setlink(vn_port);
1174 }
1175 return 0;
1176 }
1177
1178 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1179 {
1180 struct bnx2fc_lport *blport, *tmp;
1181
1182 spin_lock_bh(&hba->hba_lock);
1183 list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1184 if (blport->lport == lport) {
1185 list_del(&blport->list);
1186 kfree(blport);
1187 }
1188 }
1189 spin_unlock_bh(&hba->hba_lock);
1190 }
1191
1192 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1193 {
1194 struct Scsi_Host *shost = vport_to_shost(vport);
1195 struct fc_lport *n_port = shost_priv(shost);
1196 struct fc_lport *vn_port = vport->dd_data;
1197 struct fcoe_port *port = lport_priv(vn_port);
1198 struct bnx2fc_interface *interface = port->priv;
1199 struct fc_lport *v_port;
1200 bool found = false;
1201
1202 mutex_lock(&n_port->lp_mutex);
1203 list_for_each_entry(v_port, &n_port->vports, list)
1204 if (v_port->vport == vport) {
1205 found = true;
1206 break;
1207 }
1208
1209 if (!found) {
1210 mutex_unlock(&n_port->lp_mutex);
1211 return -ENOENT;
1212 }
1213 list_del(&vn_port->list);
1214 mutex_unlock(&n_port->lp_mutex);
1215 bnx2fc_free_vport(interface->hba, port->lport);
1216 bnx2fc_port_shutdown(port->lport);
1217 bnx2fc_interface_put(interface);
1218 queue_work(bnx2fc_wq, &port->destroy_work);
1219 return 0;
1220 }
1221
1222 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1223 {
1224 struct fc_lport *lport = vport->dd_data;
1225
1226 if (disable) {
1227 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1228 fc_fabric_logoff(lport);
1229 } else {
1230 lport->boot_time = jiffies;
1231 fc_fabric_login(lport);
1232 fc_vport_setlink(lport);
1233 }
1234 return 0;
1235 }
1236
1237
1238 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1239 {
1240 struct net_device *netdev = interface->netdev;
1241 struct net_device *physdev = interface->hba->phys_dev;
1242 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1243 struct netdev_hw_addr *ha;
1244 int sel_san_mac = 0;
1245
1246 /* setup Source MAC Address */
1247 rcu_read_lock();
1248 for_each_dev_addr(physdev, ha) {
1249 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1250 ha->type);
1251 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1252 ha->addr[1], ha->addr[2], ha->addr[3],
1253 ha->addr[4], ha->addr[5]);
1254
1255 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1256 (is_valid_ether_addr(ha->addr))) {
1257 memcpy(ctlr->ctl_src_addr, ha->addr,
1258 ETH_ALEN);
1259 sel_san_mac = 1;
1260 BNX2FC_MISC_DBG("Found SAN MAC\n");
1261 }
1262 }
1263 rcu_read_unlock();
1264
1265 if (!sel_san_mac)
1266 return -ENODEV;
1267
1268 interface->fip_packet_type.func = bnx2fc_fip_recv;
1269 interface->fip_packet_type.type = htons(ETH_P_FIP);
1270 interface->fip_packet_type.dev = netdev;
1271 dev_add_pack(&interface->fip_packet_type);
1272
1273 interface->fcoe_packet_type.func = bnx2fc_rcv;
1274 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1275 interface->fcoe_packet_type.dev = netdev;
1276 dev_add_pack(&interface->fcoe_packet_type);
1277
1278 return 0;
1279 }
1280
1281 static int bnx2fc_attach_transport(void)
1282 {
1283 bnx2fc_transport_template =
1284 fc_attach_transport(&bnx2fc_transport_function);
1285
1286 if (bnx2fc_transport_template == NULL) {
1287 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1288 return -ENODEV;
1289 }
1290
1291 bnx2fc_vport_xport_template =
1292 fc_attach_transport(&bnx2fc_vport_xport_function);
1293 if (bnx2fc_vport_xport_template == NULL) {
1294 printk(KERN_ERR PFX
1295 "Failed to attach FC transport for vport\n");
1296 fc_release_transport(bnx2fc_transport_template);
1297 bnx2fc_transport_template = NULL;
1298 return -ENODEV;
1299 }
1300 return 0;
1301 }
1302 static void bnx2fc_release_transport(void)
1303 {
1304 fc_release_transport(bnx2fc_transport_template);
1305 fc_release_transport(bnx2fc_vport_xport_template);
1306 bnx2fc_transport_template = NULL;
1307 bnx2fc_vport_xport_template = NULL;
1308 }
1309
1310 static void bnx2fc_interface_release(struct kref *kref)
1311 {
1312 struct fcoe_ctlr_device *ctlr_dev;
1313 struct bnx2fc_interface *interface;
1314 struct fcoe_ctlr *ctlr;
1315 struct net_device *netdev;
1316
1317 interface = container_of(kref, struct bnx2fc_interface, kref);
1318 BNX2FC_MISC_DBG("Interface is being released\n");
1319
1320 ctlr = bnx2fc_to_ctlr(interface);
1321 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1322 netdev = interface->netdev;
1323
1324 /* tear-down FIP controller */
1325 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1326 fcoe_ctlr_destroy(ctlr);
1327
1328 fcoe_ctlr_device_delete(ctlr_dev);
1329
1330 dev_put(netdev);
1331 module_put(THIS_MODULE);
1332 }
1333
1334 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1335 {
1336 kref_get(&interface->kref);
1337 }
1338
1339 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1340 {
1341 kref_put(&interface->kref, bnx2fc_interface_release);
1342 }
1343 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1344 {
1345 /* Free the command manager */
1346 if (hba->cmd_mgr) {
1347 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1348 hba->cmd_mgr = NULL;
1349 }
1350 kfree(hba->tgt_ofld_list);
1351 bnx2fc_unbind_pcidev(hba);
1352 kfree(hba);
1353 }
1354
1355 /**
1356 * bnx2fc_hba_create - create a new bnx2fc hba
1357 *
1358 * @cnic: pointer to cnic device
1359 *
1360 * Creates a new FCoE hba on the given device.
1361 *
1362 */
1363 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1364 {
1365 struct bnx2fc_hba *hba;
1366 struct fcoe_capabilities *fcoe_cap;
1367 int rc;
1368
1369 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1370 if (!hba) {
1371 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1372 return NULL;
1373 }
1374 spin_lock_init(&hba->hba_lock);
1375 mutex_init(&hba->hba_mutex);
1376 mutex_init(&hba->hba_stats_mutex);
1377
1378 hba->cnic = cnic;
1379
1380 hba->max_tasks = cnic->max_fcoe_exchanges;
1381 hba->elstm_xids = (hba->max_tasks / 2);
1382 hba->max_outstanding_cmds = hba->elstm_xids;
1383 hba->max_xid = (hba->max_tasks - 1);
1384
1385 rc = bnx2fc_bind_pcidev(hba);
1386 if (rc) {
1387 printk(KERN_ERR PFX "create_adapter: bind error\n");
1388 goto bind_err;
1389 }
1390 hba->phys_dev = cnic->netdev;
1391 hba->next_conn_id = 0;
1392
1393 hba->tgt_ofld_list =
1394 kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *),
1395 GFP_KERNEL);
1396 if (!hba->tgt_ofld_list) {
1397 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1398 goto tgtofld_err;
1399 }
1400
1401 hba->num_ofld_sess = 0;
1402
1403 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1404 if (!hba->cmd_mgr) {
1405 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1406 goto cmgr_err;
1407 }
1408 fcoe_cap = &hba->fcoe_cap;
1409
1410 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1411 FCOE_IOS_PER_CONNECTION_SHIFT;
1412 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1413 FCOE_LOGINS_PER_PORT_SHIFT;
1414 fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1415 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1416 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1417 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1418 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1419 FCOE_TARGETS_SUPPORTED_SHIFT;
1420 fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1421 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1422 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1423
1424 init_waitqueue_head(&hba->shutdown_wait);
1425 init_waitqueue_head(&hba->destroy_wait);
1426 INIT_LIST_HEAD(&hba->vports);
1427
1428 return hba;
1429
1430 cmgr_err:
1431 kfree(hba->tgt_ofld_list);
1432 tgtofld_err:
1433 bnx2fc_unbind_pcidev(hba);
1434 bind_err:
1435 kfree(hba);
1436 return NULL;
1437 }
1438
1439 static struct bnx2fc_interface *
1440 bnx2fc_interface_create(struct bnx2fc_hba *hba,
1441 struct net_device *netdev,
1442 enum fip_mode fip_mode)
1443 {
1444 struct fcoe_ctlr_device *ctlr_dev;
1445 struct bnx2fc_interface *interface;
1446 struct fcoe_ctlr *ctlr;
1447 int size;
1448 int rc = 0;
1449
1450 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1451 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1452 size);
1453 if (!ctlr_dev) {
1454 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1455 return NULL;
1456 }
1457 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1458 ctlr->cdev = ctlr_dev;
1459 interface = fcoe_ctlr_priv(ctlr);
1460 dev_hold(netdev);
1461 kref_init(&interface->kref);
1462 interface->hba = hba;
1463 interface->netdev = netdev;
1464
1465 /* Initialize FIP */
1466 fcoe_ctlr_init(ctlr, fip_mode);
1467 ctlr->send = bnx2fc_fip_send;
1468 ctlr->update_mac = bnx2fc_update_src_mac;
1469 ctlr->get_src_addr = bnx2fc_get_src_mac;
1470 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1471
1472 rc = bnx2fc_interface_setup(interface);
1473 if (!rc)
1474 return interface;
1475
1476 fcoe_ctlr_destroy(ctlr);
1477 dev_put(netdev);
1478 fcoe_ctlr_device_delete(ctlr_dev);
1479 return NULL;
1480 }
1481
1482 /**
1483 * bnx2fc_if_create - Create FCoE instance on a given interface
1484 *
1485 * @interface: FCoE interface to create a local port on
1486 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1487 * @npiv: Indicates if the port is vport or not
1488 *
1489 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1490 *
1491 * Returns: Allocated fc_lport or an error pointer
1492 */
1493 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1494 struct device *parent, int npiv)
1495 {
1496 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1497 struct fc_lport *lport, *n_port;
1498 struct fcoe_port *port;
1499 struct Scsi_Host *shost;
1500 struct fc_vport *vport = dev_to_vport(parent);
1501 struct bnx2fc_lport *blport;
1502 struct bnx2fc_hba *hba = interface->hba;
1503 int rc = 0;
1504
1505 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1506 if (!blport) {
1507 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1508 return NULL;
1509 }
1510
1511 /* Allocate Scsi_Host structure */
1512 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1513 if (!npiv)
1514 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1515 else
1516 lport = libfc_vport_create(vport, sizeof(*port));
1517
1518 if (!lport) {
1519 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1520 goto free_blport;
1521 }
1522 shost = lport->host;
1523 port = lport_priv(lport);
1524 port->lport = lport;
1525 port->priv = interface;
1526 port->get_netdev = bnx2fc_netdev;
1527 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1528
1529 /* Configure fcoe_port */
1530 rc = bnx2fc_lport_config(lport);
1531 if (rc)
1532 goto lp_config_err;
1533
1534 if (npiv) {
1535 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1536 vport->node_name, vport->port_name);
1537 fc_set_wwnn(lport, vport->node_name);
1538 fc_set_wwpn(lport, vport->port_name);
1539 }
1540 /* Configure netdev and networking properties of the lport */
1541 rc = bnx2fc_net_config(lport, interface->netdev);
1542 if (rc) {
1543 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1544 goto lp_config_err;
1545 }
1546
1547 rc = bnx2fc_shost_config(lport, parent);
1548 if (rc) {
1549 printk(KERN_ERR PFX "Couldn't configure shost for %s\n",
1550 interface->netdev->name);
1551 goto lp_config_err;
1552 }
1553
1554 /* Initialize the libfc library */
1555 rc = bnx2fc_libfc_config(lport);
1556 if (rc) {
1557 printk(KERN_ERR PFX "Couldn't configure libfc\n");
1558 goto shost_err;
1559 }
1560 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1561
1562 if (bnx2fc_devloss_tmo)
1563 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo;
1564
1565 /* Allocate exchange manager */
1566 if (!npiv)
1567 rc = bnx2fc_em_config(lport, hba);
1568 else {
1569 shost = vport_to_shost(vport);
1570 n_port = shost_priv(shost);
1571 rc = fc_exch_mgr_list_clone(n_port, lport);
1572 }
1573
1574 if (rc) {
1575 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1576 goto shost_err;
1577 }
1578
1579 bnx2fc_interface_get(interface);
1580
1581 spin_lock_bh(&hba->hba_lock);
1582 blport->lport = lport;
1583 list_add_tail(&blport->list, &hba->vports);
1584 spin_unlock_bh(&hba->hba_lock);
1585
1586 return lport;
1587
1588 shost_err:
1589 scsi_remove_host(shost);
1590 lp_config_err:
1591 scsi_host_put(lport->host);
1592 free_blport:
1593 kfree(blport);
1594 return NULL;
1595 }
1596
1597 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1598 {
1599 /* Dont listen for Ethernet packets anymore */
1600 __dev_remove_pack(&interface->fcoe_packet_type);
1601 __dev_remove_pack(&interface->fip_packet_type);
1602 synchronize_net();
1603 }
1604
1605 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1606 {
1607 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1608 struct fc_lport *lport = ctlr->lp;
1609 struct fcoe_port *port = lport_priv(lport);
1610 struct bnx2fc_hba *hba = interface->hba;
1611
1612 /* Stop the transmit retry timer */
1613 del_timer_sync(&port->timer);
1614
1615 /* Free existing transmit skbs */
1616 fcoe_clean_pending_queue(lport);
1617
1618 bnx2fc_net_cleanup(interface);
1619
1620 bnx2fc_free_vport(hba, lport);
1621 }
1622
1623 static void bnx2fc_if_destroy(struct fc_lport *lport)
1624 {
1625
1626 /* Free queued packets for the receive thread */
1627 bnx2fc_clean_rx_queue(lport);
1628
1629 /* Detach from scsi-ml */
1630 fc_remove_host(lport->host);
1631 scsi_remove_host(lport->host);
1632
1633 /*
1634 * Note that only the physical lport will have the exchange manager.
1635 * for vports, this function is NOP
1636 */
1637 fc_exch_mgr_free(lport);
1638
1639 /* Free memory used by statistical counters */
1640 fc_lport_free_stats(lport);
1641
1642 /* Release Scsi_Host */
1643 scsi_host_put(lport->host);
1644 }
1645
1646 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1647 {
1648 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1649 struct fc_lport *lport = ctlr->lp;
1650 struct fcoe_port *port = lport_priv(lport);
1651
1652 bnx2fc_interface_cleanup(interface);
1653 bnx2fc_stop(interface);
1654 list_del(&interface->list);
1655 bnx2fc_interface_put(interface);
1656 queue_work(bnx2fc_wq, &port->destroy_work);
1657 }
1658
1659 /**
1660 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1661 *
1662 * @buffer: The name of the Ethernet interface to be destroyed
1663 * @kp: The associated kernel parameter
1664 *
1665 * Called from sysfs.
1666 *
1667 * Returns: 0 for success
1668 */
1669 static int bnx2fc_destroy(struct net_device *netdev)
1670 {
1671 struct bnx2fc_interface *interface = NULL;
1672 struct workqueue_struct *timer_work_queue;
1673 struct fcoe_ctlr *ctlr;
1674 int rc = 0;
1675
1676 rtnl_lock();
1677 mutex_lock(&bnx2fc_dev_lock);
1678
1679 interface = bnx2fc_interface_lookup(netdev);
1680 ctlr = bnx2fc_to_ctlr(interface);
1681 if (!interface || !ctlr->lp) {
1682 rc = -ENODEV;
1683 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1684 goto netdev_err;
1685 }
1686
1687 timer_work_queue = interface->timer_work_queue;
1688 __bnx2fc_destroy(interface);
1689 destroy_workqueue(timer_work_queue);
1690
1691 netdev_err:
1692 mutex_unlock(&bnx2fc_dev_lock);
1693 rtnl_unlock();
1694 return rc;
1695 }
1696
1697 static void bnx2fc_destroy_work(struct work_struct *work)
1698 {
1699 struct fcoe_port *port;
1700 struct fc_lport *lport;
1701
1702 port = container_of(work, struct fcoe_port, destroy_work);
1703 lport = port->lport;
1704
1705 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1706
1707 bnx2fc_if_destroy(lport);
1708 }
1709
1710 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1711 {
1712 bnx2fc_free_fw_resc(hba);
1713 bnx2fc_free_task_ctx(hba);
1714 }
1715
1716 /**
1717 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1718 * pci structure
1719 *
1720 * @hba: Adapter instance
1721 */
1722 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1723 {
1724 if (bnx2fc_setup_task_ctx(hba))
1725 goto mem_err;
1726
1727 if (bnx2fc_setup_fw_resc(hba))
1728 goto mem_err;
1729
1730 return 0;
1731 mem_err:
1732 bnx2fc_unbind_adapter_devices(hba);
1733 return -ENOMEM;
1734 }
1735
1736 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1737 {
1738 struct cnic_dev *cnic;
1739 struct pci_dev *pdev;
1740
1741 if (!hba->cnic) {
1742 printk(KERN_ERR PFX "cnic is NULL\n");
1743 return -ENODEV;
1744 }
1745 cnic = hba->cnic;
1746 pdev = hba->pcidev = cnic->pcidev;
1747 if (!hba->pcidev)
1748 return -ENODEV;
1749
1750 switch (pdev->device) {
1751 case PCI_DEVICE_ID_NX2_57710:
1752 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1753 break;
1754 case PCI_DEVICE_ID_NX2_57711:
1755 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1756 break;
1757 case PCI_DEVICE_ID_NX2_57712:
1758 case PCI_DEVICE_ID_NX2_57712_MF:
1759 case PCI_DEVICE_ID_NX2_57712_VF:
1760 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1761 break;
1762 case PCI_DEVICE_ID_NX2_57800:
1763 case PCI_DEVICE_ID_NX2_57800_MF:
1764 case PCI_DEVICE_ID_NX2_57800_VF:
1765 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1766 break;
1767 case PCI_DEVICE_ID_NX2_57810:
1768 case PCI_DEVICE_ID_NX2_57810_MF:
1769 case PCI_DEVICE_ID_NX2_57810_VF:
1770 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1771 break;
1772 case PCI_DEVICE_ID_NX2_57840:
1773 case PCI_DEVICE_ID_NX2_57840_MF:
1774 case PCI_DEVICE_ID_NX2_57840_VF:
1775 case PCI_DEVICE_ID_NX2_57840_2_20:
1776 case PCI_DEVICE_ID_NX2_57840_4_10:
1777 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1778 break;
1779 default:
1780 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1781 break;
1782 }
1783 pci_dev_get(hba->pcidev);
1784 return 0;
1785 }
1786
1787 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1788 {
1789 if (hba->pcidev) {
1790 hba->chip_num[0] = '\0';
1791 pci_dev_put(hba->pcidev);
1792 }
1793 hba->pcidev = NULL;
1794 }
1795
1796 /**
1797 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1798 *
1799 * @handle: transport handle pointing to adapter struture
1800 */
1801 static int bnx2fc_ulp_get_stats(void *handle)
1802 {
1803 struct bnx2fc_hba *hba = handle;
1804 struct cnic_dev *cnic;
1805 struct fcoe_stats_info *stats_addr;
1806
1807 if (!hba)
1808 return -EINVAL;
1809
1810 cnic = hba->cnic;
1811 stats_addr = &cnic->stats_addr->fcoe_stat;
1812 if (!stats_addr)
1813 return -EINVAL;
1814
1815 strncpy(stats_addr->version, BNX2FC_VERSION,
1816 sizeof(stats_addr->version));
1817 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1818 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1819
1820 return 0;
1821 }
1822
1823
1824 /**
1825 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1826 *
1827 * @handle: transport handle pointing to adapter structure
1828 *
1829 * This function maps adapter structure to pcidev structure and initiates
1830 * firmware handshake to enable/initialize on-chip FCoE components.
1831 * This bnx2fc - cnic interface api callback is used after following
1832 * conditions are met -
1833 * a) underlying network interface is up (marked by event NETDEV_UP
1834 * from netdev
1835 * b) bnx2fc adatper structure is registered.
1836 */
1837 static void bnx2fc_ulp_start(void *handle)
1838 {
1839 struct bnx2fc_hba *hba = handle;
1840 struct bnx2fc_interface *interface;
1841 struct fcoe_ctlr *ctlr;
1842 struct fc_lport *lport;
1843
1844 mutex_lock(&bnx2fc_dev_lock);
1845
1846 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1847 bnx2fc_fw_init(hba);
1848
1849 BNX2FC_MISC_DBG("bnx2fc started.\n");
1850
1851 list_for_each_entry(interface, &if_list, list) {
1852 if (interface->hba == hba) {
1853 ctlr = bnx2fc_to_ctlr(interface);
1854 lport = ctlr->lp;
1855 /* Kick off Fabric discovery*/
1856 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1857 lport->tt.frame_send = bnx2fc_xmit;
1858 bnx2fc_start_disc(interface);
1859 }
1860 }
1861
1862 mutex_unlock(&bnx2fc_dev_lock);
1863 }
1864
1865 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1866 {
1867 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1868 fc_fabric_logoff(lport);
1869 fc_lport_destroy(lport);
1870 }
1871
1872 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1873 {
1874 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1875 struct fc_lport *lport;
1876 struct fc_lport *vport;
1877
1878 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1879 return;
1880
1881 lport = ctlr->lp;
1882 bnx2fc_port_shutdown(lport);
1883
1884 mutex_lock(&lport->lp_mutex);
1885 list_for_each_entry(vport, &lport->vports, list)
1886 fc_host_port_type(vport->host) =
1887 FC_PORTTYPE_UNKNOWN;
1888 mutex_unlock(&lport->lp_mutex);
1889 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1890 fcoe_ctlr_link_down(ctlr);
1891 fcoe_clean_pending_queue(lport);
1892 }
1893
1894 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1895 {
1896 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1897 int rc = -1;
1898 int i = HZ;
1899
1900 rc = bnx2fc_bind_adapter_devices(hba);
1901 if (rc) {
1902 printk(KERN_ALERT PFX
1903 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1904 goto err_out;
1905 }
1906
1907 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1908 if (rc) {
1909 printk(KERN_ALERT PFX
1910 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1911 goto err_unbind;
1912 }
1913
1914 /*
1915 * Wait until the adapter init message is complete, and adapter
1916 * state is UP.
1917 */
1918 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1919 msleep(BNX2FC_INIT_POLL_TIME);
1920
1921 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1922 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1923 "Ignoring...\n",
1924 hba->cnic->netdev->name);
1925 rc = -1;
1926 goto err_unbind;
1927 }
1928
1929
1930 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1931 return 0;
1932
1933 err_unbind:
1934 bnx2fc_unbind_adapter_devices(hba);
1935 err_out:
1936 return rc;
1937 }
1938
1939 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1940 {
1941 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1942 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1943 timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer,
1944 0);
1945 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1946 jiffies;
1947 add_timer(&hba->destroy_timer);
1948 wait_event_interruptible(hba->destroy_wait,
1949 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1950 &hba->flags));
1951 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1952 /* This should never happen */
1953 if (signal_pending(current))
1954 flush_signals(current);
1955
1956 del_timer_sync(&hba->destroy_timer);
1957 }
1958 bnx2fc_unbind_adapter_devices(hba);
1959 }
1960 }
1961
1962 /**
1963 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1964 *
1965 * @handle: transport handle pointing to adapter structure
1966 *
1967 * Driver checks if adapter is already in shutdown mode, if not start
1968 * the shutdown process.
1969 */
1970 static void bnx2fc_ulp_stop(void *handle)
1971 {
1972 struct bnx2fc_hba *hba = handle;
1973 struct bnx2fc_interface *interface;
1974
1975 printk(KERN_ERR "ULP_STOP\n");
1976
1977 mutex_lock(&bnx2fc_dev_lock);
1978 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1979 goto exit;
1980 list_for_each_entry(interface, &if_list, list) {
1981 if (interface->hba == hba)
1982 bnx2fc_stop(interface);
1983 }
1984 BUG_ON(hba->num_ofld_sess != 0);
1985
1986 mutex_lock(&hba->hba_mutex);
1987 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1988 clear_bit(ADAPTER_STATE_GOING_DOWN,
1989 &hba->adapter_state);
1990
1991 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1992 mutex_unlock(&hba->hba_mutex);
1993
1994 bnx2fc_fw_destroy(hba);
1995 exit:
1996 mutex_unlock(&bnx2fc_dev_lock);
1997 }
1998
1999 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
2000 {
2001 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
2002 struct fc_lport *lport;
2003 int wait_cnt = 0;
2004
2005 BNX2FC_MISC_DBG("Entered %s\n", __func__);
2006 /* Kick off FIP/FLOGI */
2007 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
2008 printk(KERN_ERR PFX "Init not done yet\n");
2009 return;
2010 }
2011
2012 lport = ctlr->lp;
2013 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
2014
2015 if (!bnx2fc_link_ok(lport) && interface->enabled) {
2016 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
2017 fcoe_ctlr_link_up(ctlr);
2018 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2019 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2020 }
2021
2022 /* wait for the FCF to be selected before issuing FLOGI */
2023 while (!ctlr->sel_fcf) {
2024 msleep(250);
2025 /* give up after 3 secs */
2026 if (++wait_cnt > 12)
2027 break;
2028 }
2029
2030 /* Reset max receive frame size to default */
2031 if (fc_set_mfs(lport, BNX2FC_MFS))
2032 return;
2033
2034 fc_lport_init(lport);
2035 fc_fabric_login(lport);
2036 }
2037
2038
2039 /**
2040 * bnx2fc_ulp_init - Initialize an adapter instance
2041 *
2042 * @dev : cnic device handle
2043 * Called from cnic_register_driver() context to initialize all
2044 * enumerated cnic devices. This routine allocates adapter structure
2045 * and other device specific resources.
2046 */
2047 static void bnx2fc_ulp_init(struct cnic_dev *dev)
2048 {
2049 struct bnx2fc_hba *hba;
2050 int rc = 0;
2051
2052 BNX2FC_MISC_DBG("Entered %s\n", __func__);
2053 /* bnx2fc works only when bnx2x is loaded */
2054 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
2055 (dev->max_fcoe_conn == 0)) {
2056 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
2057 " flags: %lx fcoe_conn: %d\n",
2058 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
2059 return;
2060 }
2061
2062 hba = bnx2fc_hba_create(dev);
2063 if (!hba) {
2064 printk(KERN_ERR PFX "hba initialization failed\n");
2065 return;
2066 }
2067
2068 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
2069
2070 /* Add HBA to the adapter list */
2071 mutex_lock(&bnx2fc_dev_lock);
2072 list_add_tail(&hba->list, &adapter_list);
2073 adapter_count++;
2074 mutex_unlock(&bnx2fc_dev_lock);
2075
2076 dev->fcoe_cap = &hba->fcoe_cap;
2077 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2078 rc = dev->register_device(dev, CNIC_ULP_FCOE,
2079 (void *) hba);
2080 if (rc)
2081 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2082 else
2083 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2084 }
2085
2086 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2087 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2088 {
2089 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2090
2091 if (interface->enabled == true) {
2092 if (!ctlr->lp) {
2093 pr_err(PFX "__bnx2fc_disable: lport not found\n");
2094 return -ENODEV;
2095 } else {
2096 interface->enabled = false;
2097 fcoe_ctlr_link_down(ctlr);
2098 fcoe_clean_pending_queue(ctlr->lp);
2099 }
2100 }
2101 return 0;
2102 }
2103
2104 /**
2105 * Deperecated: Use bnx2fc_enabled()
2106 */
2107 static int bnx2fc_disable(struct net_device *netdev)
2108 {
2109 struct bnx2fc_interface *interface;
2110 struct fcoe_ctlr *ctlr;
2111 int rc = 0;
2112
2113 rtnl_lock();
2114 mutex_lock(&bnx2fc_dev_lock);
2115
2116 interface = bnx2fc_interface_lookup(netdev);
2117 ctlr = bnx2fc_to_ctlr(interface);
2118
2119 if (!interface) {
2120 rc = -ENODEV;
2121 pr_err(PFX "bnx2fc_disable: interface not found\n");
2122 } else {
2123 rc = __bnx2fc_disable(ctlr);
2124 }
2125 mutex_unlock(&bnx2fc_dev_lock);
2126 rtnl_unlock();
2127 return rc;
2128 }
2129
2130 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2131 struct cnic_fc_npiv_tbl *npiv_tbl)
2132 {
2133 struct fc_vport_identifiers vpid;
2134 uint i, created = 0;
2135 u64 wwnn = 0;
2136 char wwpn_str[32];
2137 char wwnn_str[32];
2138
2139 if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2140 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2141 goto done;
2142 }
2143
2144 /* Sanity check the first entry to make sure it's not 0 */
2145 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2146 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2147 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2148 goto done;
2149 }
2150
2151 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2152 vpid.vport_type = FC_PORTTYPE_NPIV;
2153 vpid.disable = false;
2154
2155 for (i = 0; i < npiv_tbl->count; i++) {
2156 wwnn = wwn_to_u64(npiv_tbl->wwnn[i]);
2157 if (wwnn == 0) {
2158 /*
2159 * If we get a 0 element from for the WWNN then assume
2160 * the WWNN should be the same as the physical port.
2161 */
2162 wwnn = lport->wwnn;
2163 }
2164 vpid.node_name = wwnn;
2165 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2166 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2167 "NPIV[%u]:%016llx-%016llx",
2168 created, vpid.port_name, vpid.node_name);
2169 fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str));
2170 fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str));
2171 BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str,
2172 wwpn_str);
2173 if (fc_vport_create(lport->host, 0, &vpid))
2174 created++;
2175 else
2176 BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2177 }
2178 done:
2179 return created;
2180 }
2181
2182 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2183 {
2184 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2185 struct bnx2fc_hba *hba;
2186 struct cnic_fc_npiv_tbl *npiv_tbl;
2187 struct fc_lport *lport;
2188
2189 if (interface->enabled == false) {
2190 if (!ctlr->lp) {
2191 pr_err(PFX "__bnx2fc_enable: lport not found\n");
2192 return -ENODEV;
2193 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2194 fcoe_ctlr_link_up(ctlr);
2195 interface->enabled = true;
2196 }
2197 }
2198
2199 /* Create static NPIV ports if any are contained in NVRAM */
2200 hba = interface->hba;
2201 lport = ctlr->lp;
2202
2203 if (!hba)
2204 goto done;
2205
2206 if (!hba->cnic)
2207 goto done;
2208
2209 if (!lport)
2210 goto done;
2211
2212 if (!lport->host)
2213 goto done;
2214
2215 if (!hba->cnic->get_fc_npiv_tbl)
2216 goto done;
2217
2218 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2219 if (!npiv_tbl)
2220 goto done;
2221
2222 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2223 goto done_free;
2224
2225 bnx2fc_npiv_create_vports(lport, npiv_tbl);
2226 done_free:
2227 kfree(npiv_tbl);
2228 done:
2229 return 0;
2230 }
2231
2232 /**
2233 * Deprecated: Use bnx2fc_enabled()
2234 */
2235 static int bnx2fc_enable(struct net_device *netdev)
2236 {
2237 struct bnx2fc_interface *interface;
2238 struct fcoe_ctlr *ctlr;
2239 int rc = 0;
2240
2241 rtnl_lock();
2242 mutex_lock(&bnx2fc_dev_lock);
2243
2244 interface = bnx2fc_interface_lookup(netdev);
2245 ctlr = bnx2fc_to_ctlr(interface);
2246 if (!interface) {
2247 rc = -ENODEV;
2248 pr_err(PFX "bnx2fc_enable: interface not found\n");
2249 } else {
2250 rc = __bnx2fc_enable(ctlr);
2251 }
2252
2253 mutex_unlock(&bnx2fc_dev_lock);
2254 rtnl_unlock();
2255 return rc;
2256 }
2257
2258 /**
2259 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2260 * @cdev: The FCoE Controller that is being enabled or disabled
2261 *
2262 * fcoe_sysfs will ensure that the state of 'enabled' has
2263 * changed, so no checking is necessary here. This routine simply
2264 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2265 * When those routines are removed the functionality can be merged
2266 * here.
2267 */
2268 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2269 {
2270 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2271
2272 switch (cdev->enabled) {
2273 case FCOE_CTLR_ENABLED:
2274 return __bnx2fc_enable(ctlr);
2275 case FCOE_CTLR_DISABLED:
2276 return __bnx2fc_disable(ctlr);
2277 case FCOE_CTLR_UNUSED:
2278 default:
2279 return -ENOTSUPP;
2280 };
2281 }
2282
2283 enum bnx2fc_create_link_state {
2284 BNX2FC_CREATE_LINK_DOWN,
2285 BNX2FC_CREATE_LINK_UP,
2286 };
2287
2288 /**
2289 * _bnx2fc_create() - Create bnx2fc FCoE interface
2290 * @netdev : The net_device object the Ethernet interface to create on
2291 * @fip_mode: The FIP mode for this creation
2292 * @link_state: The ctlr link state on creation
2293 *
2294 * Called from either the libfcoe 'create' module parameter
2295 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2296 *
2297 * libfcoe's 'create' module parameter is deprecated so some
2298 * consolidation of code can be done when that interface is
2299 * removed.
2300 *
2301 * Returns: 0 for success
2302 */
2303 static int _bnx2fc_create(struct net_device *netdev,
2304 enum fip_mode fip_mode,
2305 enum bnx2fc_create_link_state link_state)
2306 {
2307 struct fcoe_ctlr_device *cdev;
2308 struct fcoe_ctlr *ctlr;
2309 struct bnx2fc_interface *interface;
2310 struct bnx2fc_hba *hba;
2311 struct net_device *phys_dev = netdev;
2312 struct fc_lport *lport;
2313 struct ethtool_drvinfo drvinfo;
2314 int rc = 0;
2315 int vlan_id = 0;
2316
2317 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2318 if (fip_mode != FIP_MODE_FABRIC) {
2319 printk(KERN_ERR "fip mode not FABRIC\n");
2320 return -EIO;
2321 }
2322
2323 rtnl_lock();
2324
2325 mutex_lock(&bnx2fc_dev_lock);
2326
2327 if (!try_module_get(THIS_MODULE)) {
2328 rc = -EINVAL;
2329 goto mod_err;
2330 }
2331
2332 /* obtain physical netdev */
2333 if (is_vlan_dev(netdev))
2334 phys_dev = vlan_dev_real_dev(netdev);
2335
2336 /* verify if the physical device is a netxtreme2 device */
2337 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2338 memset(&drvinfo, 0, sizeof(drvinfo));
2339 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2340 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2341 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2342 rc = -EINVAL;
2343 goto netdev_err;
2344 }
2345 } else {
2346 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2347 rc = -EINVAL;
2348 goto netdev_err;
2349 }
2350
2351 /* obtain interface and initialize rest of the structure */
2352 hba = bnx2fc_hba_lookup(phys_dev);
2353 if (!hba) {
2354 rc = -ENODEV;
2355 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2356 goto netdev_err;
2357 }
2358
2359 if (bnx2fc_interface_lookup(netdev)) {
2360 rc = -EEXIST;
2361 goto netdev_err;
2362 }
2363
2364 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2365 if (!interface) {
2366 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2367 rc = -ENOMEM;
2368 goto netdev_err;
2369 }
2370
2371 if (is_vlan_dev(netdev)) {
2372 vlan_id = vlan_dev_vlan_id(netdev);
2373 interface->vlan_enabled = 1;
2374 }
2375
2376 ctlr = bnx2fc_to_ctlr(interface);
2377 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2378 interface->vlan_id = vlan_id;
2379 interface->tm_timeout = BNX2FC_TM_TIMEOUT;
2380
2381 interface->timer_work_queue =
2382 create_singlethread_workqueue("bnx2fc_timer_wq");
2383 if (!interface->timer_work_queue) {
2384 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2385 rc = -EINVAL;
2386 goto ifput_err;
2387 }
2388
2389 lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2390 if (!lport) {
2391 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2392 netdev->name);
2393 rc = -EINVAL;
2394 goto if_create_err;
2395 }
2396
2397 /* Add interface to if_list */
2398 list_add_tail(&interface->list, &if_list);
2399
2400 lport->boot_time = jiffies;
2401
2402 /* Make this master N_port */
2403 ctlr->lp = lport;
2404
2405 if (link_state == BNX2FC_CREATE_LINK_UP)
2406 cdev->enabled = FCOE_CTLR_ENABLED;
2407 else
2408 cdev->enabled = FCOE_CTLR_DISABLED;
2409
2410 if (link_state == BNX2FC_CREATE_LINK_UP &&
2411 !bnx2fc_link_ok(lport)) {
2412 fcoe_ctlr_link_up(ctlr);
2413 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2414 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2415 }
2416
2417 BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2418 bnx2fc_start_disc(interface);
2419
2420 if (link_state == BNX2FC_CREATE_LINK_UP)
2421 interface->enabled = true;
2422
2423 /*
2424 * Release from kref_init in bnx2fc_interface_setup, on success
2425 * lport should be holding a reference taken in bnx2fc_if_create
2426 */
2427 bnx2fc_interface_put(interface);
2428 /* put netdev that was held while calling dev_get_by_name */
2429 mutex_unlock(&bnx2fc_dev_lock);
2430 rtnl_unlock();
2431 return 0;
2432
2433 if_create_err:
2434 destroy_workqueue(interface->timer_work_queue);
2435 ifput_err:
2436 bnx2fc_net_cleanup(interface);
2437 bnx2fc_interface_put(interface);
2438 goto mod_err;
2439 netdev_err:
2440 module_put(THIS_MODULE);
2441 mod_err:
2442 mutex_unlock(&bnx2fc_dev_lock);
2443 rtnl_unlock();
2444 return rc;
2445 }
2446
2447 /**
2448 * bnx2fc_create() - Create a bnx2fc interface
2449 * @netdev : The net_device object the Ethernet interface to create on
2450 * @fip_mode: The FIP mode for this creation
2451 *
2452 * Called from fcoe transport
2453 *
2454 * Returns: 0 for success
2455 */
2456 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode)
2457 {
2458 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2459 }
2460
2461 /**
2462 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2463 * @netdev: The net_device to be used by the allocated FCoE Controller
2464 *
2465 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2466 * in a link_down state. The allows the user an opportunity to configure
2467 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2468 *
2469 * Creating in with this routine starts the FCoE Controller in Fabric
2470 * mode. The user can change to VN2VN or another mode before enabling.
2471 */
2472 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2473 {
2474 return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2475 BNX2FC_CREATE_LINK_DOWN);
2476 }
2477
2478 /**
2479 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2480 *
2481 * @cnic: Pointer to cnic device instance
2482 *
2483 **/
2484 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2485 {
2486 struct bnx2fc_hba *hba;
2487
2488 /* Called with bnx2fc_dev_lock held */
2489 list_for_each_entry(hba, &adapter_list, list) {
2490 if (hba->cnic == cnic)
2491 return hba;
2492 }
2493 return NULL;
2494 }
2495
2496 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2497 *netdev)
2498 {
2499 struct bnx2fc_interface *interface;
2500
2501 /* Called with bnx2fc_dev_lock held */
2502 list_for_each_entry(interface, &if_list, list) {
2503 if (interface->netdev == netdev)
2504 return interface;
2505 }
2506 return NULL;
2507 }
2508
2509 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2510 *phys_dev)
2511 {
2512 struct bnx2fc_hba *hba;
2513
2514 /* Called with bnx2fc_dev_lock held */
2515 list_for_each_entry(hba, &adapter_list, list) {
2516 if (hba->phys_dev == phys_dev)
2517 return hba;
2518 }
2519 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2520 return NULL;
2521 }
2522
2523 /**
2524 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2525 *
2526 * @dev cnic device handle
2527 */
2528 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2529 {
2530 struct bnx2fc_hba *hba;
2531 struct bnx2fc_interface *interface, *tmp;
2532
2533 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2534
2535 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2536 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2537 dev->netdev->name, dev->flags);
2538 return;
2539 }
2540
2541 mutex_lock(&bnx2fc_dev_lock);
2542 hba = bnx2fc_find_hba_for_cnic(dev);
2543 if (!hba) {
2544 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2545 dev);
2546 mutex_unlock(&bnx2fc_dev_lock);
2547 return;
2548 }
2549
2550 list_del_init(&hba->list);
2551 adapter_count--;
2552
2553 list_for_each_entry_safe(interface, tmp, &if_list, list)
2554 /* destroy not called yet, move to quiesced list */
2555 if (interface->hba == hba)
2556 __bnx2fc_destroy(interface);
2557 mutex_unlock(&bnx2fc_dev_lock);
2558
2559 /* Ensure ALL destroy work has been completed before return */
2560 flush_workqueue(bnx2fc_wq);
2561
2562 bnx2fc_ulp_stop(hba);
2563 /* unregister cnic device */
2564 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2565 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2566 bnx2fc_hba_destroy(hba);
2567 }
2568
2569 static void bnx2fc_rport_terminate_io(struct fc_rport *rport)
2570 {
2571 /* This is a no-op */
2572 }
2573
2574 /**
2575 * bnx2fc_fcoe_reset - Resets the fcoe
2576 *
2577 * @shost: shost the reset is from
2578 *
2579 * Returns: always 0
2580 */
2581 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2582 {
2583 struct fc_lport *lport = shost_priv(shost);
2584 fc_lport_reset(lport);
2585 return 0;
2586 }
2587
2588
2589 static bool bnx2fc_match(struct net_device *netdev)
2590 {
2591 struct net_device *phys_dev = netdev;
2592
2593 mutex_lock(&bnx2fc_dev_lock);
2594 if (is_vlan_dev(netdev))
2595 phys_dev = vlan_dev_real_dev(netdev);
2596
2597 if (bnx2fc_hba_lookup(phys_dev)) {
2598 mutex_unlock(&bnx2fc_dev_lock);
2599 return true;
2600 }
2601
2602 mutex_unlock(&bnx2fc_dev_lock);
2603 return false;
2604 }
2605
2606
2607 static struct fcoe_transport bnx2fc_transport = {
2608 .name = {"bnx2fc"},
2609 .attached = false,
2610 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2611 .alloc = bnx2fc_ctlr_alloc,
2612 .match = bnx2fc_match,
2613 .create = bnx2fc_create,
2614 .destroy = bnx2fc_destroy,
2615 .enable = bnx2fc_enable,
2616 .disable = bnx2fc_disable,
2617 };
2618
2619 /**
2620 * bnx2fc_cpu_online - Create a receive thread for an online CPU
2621 *
2622 * @cpu: cpu index for the online cpu
2623 */
2624 static int bnx2fc_cpu_online(unsigned int cpu)
2625 {
2626 struct bnx2fc_percpu_s *p;
2627 struct task_struct *thread;
2628
2629 p = &per_cpu(bnx2fc_percpu, cpu);
2630
2631 thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2632 (void *)p, cpu_to_node(cpu),
2633 "bnx2fc_thread/%d", cpu);
2634 if (IS_ERR(thread))
2635 return PTR_ERR(thread);
2636
2637 /* bind thread to the cpu */
2638 kthread_bind(thread, cpu);
2639 p->iothread = thread;
2640 wake_up_process(thread);
2641 return 0;
2642 }
2643
2644 static int bnx2fc_cpu_offline(unsigned int cpu)
2645 {
2646 struct bnx2fc_percpu_s *p;
2647 struct task_struct *thread;
2648 struct bnx2fc_work *work, *tmp;
2649
2650 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2651
2652 /* Prevent any new work from being queued for this CPU */
2653 p = &per_cpu(bnx2fc_percpu, cpu);
2654 spin_lock_bh(&p->fp_work_lock);
2655 thread = p->iothread;
2656 p->iothread = NULL;
2657
2658 /* Free all work in the list */
2659 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2660 list_del_init(&work->list);
2661 bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data,
2662 work->num_rq, work->task);
2663 kfree(work);
2664 }
2665
2666 spin_unlock_bh(&p->fp_work_lock);
2667
2668 if (thread)
2669 kthread_stop(thread);
2670 return 0;
2671 }
2672
2673 static int bnx2fc_slave_configure(struct scsi_device *sdev)
2674 {
2675 if (!bnx2fc_queue_depth)
2676 return 0;
2677
2678 scsi_change_queue_depth(sdev, bnx2fc_queue_depth);
2679 return 0;
2680 }
2681
2682 static enum cpuhp_state bnx2fc_online_state;
2683
2684 /**
2685 * bnx2fc_mod_init - module init entry point
2686 *
2687 * Initialize driver wide global data structures, and register
2688 * with cnic module
2689 **/
2690 static int __init bnx2fc_mod_init(void)
2691 {
2692 struct fcoe_percpu_s *bg;
2693 struct task_struct *l2_thread;
2694 int rc = 0;
2695 unsigned int cpu = 0;
2696 struct bnx2fc_percpu_s *p;
2697
2698 printk(KERN_INFO PFX "%s", version);
2699
2700 /* register as a fcoe transport */
2701 rc = fcoe_transport_attach(&bnx2fc_transport);
2702 if (rc) {
2703 printk(KERN_ERR "failed to register an fcoe transport, check "
2704 "if libfcoe is loaded\n");
2705 goto out;
2706 }
2707
2708 INIT_LIST_HEAD(&adapter_list);
2709 INIT_LIST_HEAD(&if_list);
2710 mutex_init(&bnx2fc_dev_lock);
2711 adapter_count = 0;
2712
2713 /* Attach FC transport template */
2714 rc = bnx2fc_attach_transport();
2715 if (rc)
2716 goto detach_ft;
2717
2718 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2719 if (!bnx2fc_wq) {
2720 rc = -ENOMEM;
2721 goto release_bt;
2722 }
2723
2724 bg = &bnx2fc_global;
2725 skb_queue_head_init(&bg->fcoe_rx_list);
2726 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2727 (void *)bg,
2728 "bnx2fc_l2_thread");
2729 if (IS_ERR(l2_thread)) {
2730 rc = PTR_ERR(l2_thread);
2731 goto free_wq;
2732 }
2733 wake_up_process(l2_thread);
2734 spin_lock_bh(&bg->fcoe_rx_list.lock);
2735 bg->kthread = l2_thread;
2736 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2737
2738 for_each_possible_cpu(cpu) {
2739 p = &per_cpu(bnx2fc_percpu, cpu);
2740 INIT_LIST_HEAD(&p->work_list);
2741 spin_lock_init(&p->fp_work_lock);
2742 }
2743
2744 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online",
2745 bnx2fc_cpu_online, bnx2fc_cpu_offline);
2746 if (rc < 0)
2747 goto stop_thread;
2748 bnx2fc_online_state = rc;
2749
2750 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2751 return 0;
2752
2753 stop_thread:
2754 kthread_stop(l2_thread);
2755 free_wq:
2756 destroy_workqueue(bnx2fc_wq);
2757 release_bt:
2758 bnx2fc_release_transport();
2759 detach_ft:
2760 fcoe_transport_detach(&bnx2fc_transport);
2761 out:
2762 return rc;
2763 }
2764
2765 static void __exit bnx2fc_mod_exit(void)
2766 {
2767 LIST_HEAD(to_be_deleted);
2768 struct bnx2fc_hba *hba, *next;
2769 struct fcoe_percpu_s *bg;
2770 struct task_struct *l2_thread;
2771 struct sk_buff *skb;
2772
2773 /*
2774 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2775 * it will have higher precedence than bnx2fc_dev_lock.
2776 * unregister_device() cannot be called with bnx2fc_dev_lock
2777 * held.
2778 */
2779 mutex_lock(&bnx2fc_dev_lock);
2780 list_splice_init(&adapter_list, &to_be_deleted);
2781 adapter_count = 0;
2782 mutex_unlock(&bnx2fc_dev_lock);
2783
2784 /* Unregister with cnic */
2785 list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2786 list_del_init(&hba->list);
2787 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2788 hba);
2789 bnx2fc_ulp_stop(hba);
2790 /* unregister cnic device */
2791 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2792 &hba->reg_with_cnic))
2793 hba->cnic->unregister_device(hba->cnic,
2794 CNIC_ULP_FCOE);
2795 bnx2fc_hba_destroy(hba);
2796 }
2797 cnic_unregister_driver(CNIC_ULP_FCOE);
2798
2799 /* Destroy global thread */
2800 bg = &bnx2fc_global;
2801 spin_lock_bh(&bg->fcoe_rx_list.lock);
2802 l2_thread = bg->kthread;
2803 bg->kthread = NULL;
2804 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2805 kfree_skb(skb);
2806
2807 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2808
2809 if (l2_thread)
2810 kthread_stop(l2_thread);
2811
2812 cpuhp_remove_state(bnx2fc_online_state);
2813
2814 destroy_workqueue(bnx2fc_wq);
2815 /*
2816 * detach from scsi transport
2817 * must happen after all destroys are done
2818 */
2819 bnx2fc_release_transport();
2820
2821 /* detach from fcoe transport */
2822 fcoe_transport_detach(&bnx2fc_transport);
2823 }
2824
2825 module_init(bnx2fc_mod_init);
2826 module_exit(bnx2fc_mod_exit);
2827
2828 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2829 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2830 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2831 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2832 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2833 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2834 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2835 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2836
2837 .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2838 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2839 };
2840
2841 static struct fc_function_template bnx2fc_transport_function = {
2842 .show_host_node_name = 1,
2843 .show_host_port_name = 1,
2844 .show_host_supported_classes = 1,
2845 .show_host_supported_fc4s = 1,
2846 .show_host_active_fc4s = 1,
2847 .show_host_maxframe_size = 1,
2848
2849 .show_host_port_id = 1,
2850 .show_host_supported_speeds = 1,
2851 .get_host_speed = fc_get_host_speed,
2852 .show_host_speed = 1,
2853 .show_host_port_type = 1,
2854 .get_host_port_state = fc_get_host_port_state,
2855 .show_host_port_state = 1,
2856 .show_host_symbolic_name = 1,
2857
2858 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2859 sizeof(struct bnx2fc_rport)),
2860 .show_rport_maxframe_size = 1,
2861 .show_rport_supported_classes = 1,
2862
2863 .show_host_fabric_name = 1,
2864 .show_starget_node_name = 1,
2865 .show_starget_port_name = 1,
2866 .show_starget_port_id = 1,
2867 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2868 .show_rport_dev_loss_tmo = 1,
2869 .get_fc_host_stats = bnx2fc_get_host_stats,
2870
2871 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2872
2873 .terminate_rport_io = bnx2fc_rport_terminate_io,
2874
2875 .vport_create = bnx2fc_vport_create,
2876 .vport_delete = bnx2fc_vport_destroy,
2877 .vport_disable = bnx2fc_vport_disable,
2878 .bsg_request = fc_lport_bsg_request,
2879 };
2880
2881 static struct fc_function_template bnx2fc_vport_xport_function = {
2882 .show_host_node_name = 1,
2883 .show_host_port_name = 1,
2884 .show_host_supported_classes = 1,
2885 .show_host_supported_fc4s = 1,
2886 .show_host_active_fc4s = 1,
2887 .show_host_maxframe_size = 1,
2888
2889 .show_host_port_id = 1,
2890 .show_host_supported_speeds = 1,
2891 .get_host_speed = fc_get_host_speed,
2892 .show_host_speed = 1,
2893 .show_host_port_type = 1,
2894 .get_host_port_state = fc_get_host_port_state,
2895 .show_host_port_state = 1,
2896 .show_host_symbolic_name = 1,
2897
2898 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2899 sizeof(struct bnx2fc_rport)),
2900 .show_rport_maxframe_size = 1,
2901 .show_rport_supported_classes = 1,
2902
2903 .show_host_fabric_name = 1,
2904 .show_starget_node_name = 1,
2905 .show_starget_port_name = 1,
2906 .show_starget_port_id = 1,
2907 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2908 .show_rport_dev_loss_tmo = 1,
2909 .get_fc_host_stats = fc_get_host_stats,
2910 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2911 .terminate_rport_io = fc_rport_terminate_io,
2912 .bsg_request = fc_lport_bsg_request,
2913 };
2914
2915 /*
2916 * Additional scsi_host attributes.
2917 */
2918 static ssize_t
2919 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
2920 char *buf)
2921 {
2922 struct Scsi_Host *shost = class_to_shost(dev);
2923 struct fc_lport *lport = shost_priv(shost);
2924 struct fcoe_port *port = lport_priv(lport);
2925 struct bnx2fc_interface *interface = port->priv;
2926
2927 sprintf(buf, "%u\n", interface->tm_timeout);
2928 return strlen(buf);
2929 }
2930
2931 static ssize_t
2932 bnx2fc_tm_timeout_store(struct device *dev,
2933 struct device_attribute *attr, const char *buf, size_t count)
2934 {
2935 struct Scsi_Host *shost = class_to_shost(dev);
2936 struct fc_lport *lport = shost_priv(shost);
2937 struct fcoe_port *port = lport_priv(lport);
2938 struct bnx2fc_interface *interface = port->priv;
2939 int rval, val;
2940
2941 rval = kstrtouint(buf, 10, &val);
2942 if (rval)
2943 return rval;
2944 if (val > 255)
2945 return -ERANGE;
2946
2947 interface->tm_timeout = (u8)val;
2948 return strlen(buf);
2949 }
2950
2951 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
2952 bnx2fc_tm_timeout_store);
2953
2954 static struct device_attribute *bnx2fc_host_attrs[] = {
2955 &dev_attr_tm_timeout,
2956 NULL,
2957 };
2958
2959 /**
2960 * scsi_host_template structure used while registering with SCSI-ml
2961 */
2962 static struct scsi_host_template bnx2fc_shost_template = {
2963 .module = THIS_MODULE,
2964 .name = "QLogic Offload FCoE Initiator",
2965 .queuecommand = bnx2fc_queuecommand,
2966 .eh_timed_out = fc_eh_timed_out,
2967 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2968 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2969 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2970 .eh_host_reset_handler = fc_eh_host_reset,
2971 .slave_alloc = fc_slave_alloc,
2972 .change_queue_depth = scsi_change_queue_depth,
2973 .this_id = -1,
2974 .cmd_per_lun = 3,
2975 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2976 .dma_boundary = 0x7fff,
2977 .max_sectors = 0x3fbf,
2978 .track_queue_depth = 1,
2979 .slave_configure = bnx2fc_slave_configure,
2980 .shost_attrs = bnx2fc_host_attrs,
2981 };
2982
2983 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2984 .frame_send = bnx2fc_xmit,
2985 .elsct_send = bnx2fc_elsct_send,
2986 .fcp_abort_io = bnx2fc_abort_io,
2987 .fcp_cleanup = bnx2fc_cleanup,
2988 .get_lesb = fcoe_get_lesb,
2989 .rport_event_callback = bnx2fc_rport_event_handler,
2990 };
2991
2992 /**
2993 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2994 * structure carrying callback function pointers
2995 */
2996 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2997 .owner = THIS_MODULE,
2998 .cnic_init = bnx2fc_ulp_init,
2999 .cnic_exit = bnx2fc_ulp_exit,
3000 .cnic_start = bnx2fc_ulp_start,
3001 .cnic_stop = bnx2fc_ulp_stop,
3002 .indicate_kcqes = bnx2fc_indicate_kcqe,
3003 .indicate_netevent = bnx2fc_indicate_netevent,
3004 .cnic_get_stats = bnx2fc_ulp_get_stats,
3005 };
Linux with added FPC-III support