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 static 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_port_destroy(struct fcoe_port *port);
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 static 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 static 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 static 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 static 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
bnx2fc_netdev(const struct fc_lport * lport)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
bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device * fcf_dev)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
bnx2fc_clean_rx_queue(struct fc_lport * lp)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
bnx2fc_get_paged_crc_eof(struct sk_buff * skb,int tlen)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
bnx2fc_abort_io(struct fc_lport * lport)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
bnx2fc_cleanup(struct fc_lport * lport)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
bnx2fc_xmit_l2_frame(struct bnx2fc_rport * tgt,struct fc_frame * fp)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 */
bnx2fc_xmit(struct fc_lport * lport,struct fc_frame * fp)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 */
bnx2fc_rcv(struct sk_buff * skb,struct net_device * dev,struct packet_type * ptype,struct net_device * olddev)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
bnx2fc_l2_rcv_thread(void * arg)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
bnx2fc_recv_frame(struct sk_buff * skb)507 static void bnx2fc_recv_frame(struct sk_buff *skb)
508 {
509 u64 crc_err;
510 u32 fr_len, fr_crc;
511 struct fc_lport *lport;
512 struct fcoe_rcv_info *fr;
513 struct fc_stats *stats;
514 struct fc_frame_header *fh;
515 struct fcoe_crc_eof crc_eof;
516 struct fc_frame *fp;
517 struct fc_lport *vn_port;
518 struct fcoe_port *port, *phys_port;
519 u8 *mac = NULL;
520 u8 *dest_mac = NULL;
521 struct fcoe_hdr *hp;
522 struct bnx2fc_interface *interface;
523 struct fcoe_ctlr *ctlr;
524
525 fr = fcoe_dev_from_skb(skb);
526 lport = fr->fr_dev;
527 if (unlikely(lport == NULL)) {
528 printk(KERN_ERR PFX "Invalid lport struct\n");
529 kfree_skb(skb);
530 return;
531 }
532
533 if (skb_is_nonlinear(skb))
534 skb_linearize(skb);
535 mac = eth_hdr(skb)->h_source;
536 dest_mac = eth_hdr(skb)->h_dest;
537
538 /* Pull the header */
539 hp = (struct fcoe_hdr *) skb_network_header(skb);
540 fh = (struct fc_frame_header *) skb_transport_header(skb);
541 skb_pull(skb, sizeof(struct fcoe_hdr));
542 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
543
544 stats = per_cpu_ptr(lport->stats, get_cpu());
545 stats->RxFrames++;
546 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
547 put_cpu();
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 phys_port = lport_priv(lport);
565 interface = phys_port->priv;
566 ctlr = bnx2fc_to_ctlr(interface);
567
568 fh = fc_frame_header_get(fp);
569
570 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
571 BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n",
572 dest_mac);
573 kfree_skb(skb);
574 return;
575 }
576
577 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
578 if (vn_port) {
579 port = lport_priv(vn_port);
580 if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
581 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
582 kfree_skb(skb);
583 return;
584 }
585 }
586 if (ctlr->state) {
587 if (!ether_addr_equal(mac, ctlr->dest_addr)) {
588 BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n",
589 mac, ctlr->dest_addr);
590 kfree_skb(skb);
591 return;
592 }
593 }
594 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
595 fh->fh_type == FC_TYPE_FCP) {
596 /* Drop FCP data. We dont this in L2 path */
597 kfree_skb(skb);
598 return;
599 }
600 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
601 fh->fh_type == FC_TYPE_ELS) {
602 switch (fc_frame_payload_op(fp)) {
603 case ELS_LOGO:
604 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
605 /* drop non-FIP LOGO */
606 kfree_skb(skb);
607 return;
608 }
609 break;
610 }
611 }
612
613 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
614 /* Drop incoming ABTS */
615 kfree_skb(skb);
616 return;
617 }
618
619 /*
620 * If the destination ID from the frame header does not match what we
621 * have on record for lport and the search for a NPIV port came up
622 * empty then this is not addressed to our port so simply drop it.
623 */
624 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
625 BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
626 lport->port_id, ntoh24(fh->fh_d_id));
627 kfree_skb(skb);
628 return;
629 }
630
631 fr_crc = le32_to_cpu(fr_crc(fp));
632
633 if (unlikely(fr_crc != ~crc32(~0, skb->data, fr_len))) {
634 stats = per_cpu_ptr(lport->stats, get_cpu());
635 crc_err = (stats->InvalidCRCCount++);
636 put_cpu();
637 if (crc_err < 5)
638 printk(KERN_WARNING PFX "dropping frame with "
639 "CRC error\n");
640 kfree_skb(skb);
641 return;
642 }
643 fc_exch_recv(lport, fp);
644 }
645
646 /**
647 * bnx2fc_percpu_io_thread - thread per cpu for ios
648 *
649 * @arg: ptr to bnx2fc_percpu_info structure
650 */
bnx2fc_percpu_io_thread(void * arg)651 static int bnx2fc_percpu_io_thread(void *arg)
652 {
653 struct bnx2fc_percpu_s *p = arg;
654 struct bnx2fc_work *work, *tmp;
655 LIST_HEAD(work_list);
656
657 set_user_nice(current, MIN_NICE);
658 set_current_state(TASK_INTERRUPTIBLE);
659 while (!kthread_should_stop()) {
660 schedule();
661 spin_lock_bh(&p->fp_work_lock);
662 while (!list_empty(&p->work_list)) {
663 list_splice_init(&p->work_list, &work_list);
664 spin_unlock_bh(&p->fp_work_lock);
665
666 list_for_each_entry_safe(work, tmp, &work_list, list) {
667 list_del_init(&work->list);
668 bnx2fc_process_cq_compl(work->tgt, work->wqe,
669 work->rq_data,
670 work->num_rq,
671 work->task);
672 kfree(work);
673 }
674
675 spin_lock_bh(&p->fp_work_lock);
676 }
677 __set_current_state(TASK_INTERRUPTIBLE);
678 spin_unlock_bh(&p->fp_work_lock);
679 }
680 __set_current_state(TASK_RUNNING);
681
682 return 0;
683 }
684
bnx2fc_get_host_stats(struct Scsi_Host * shost)685 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
686 {
687 struct fc_host_statistics *bnx2fc_stats;
688 struct fc_lport *lport = shost_priv(shost);
689 struct fcoe_port *port = lport_priv(lport);
690 struct bnx2fc_interface *interface = port->priv;
691 struct bnx2fc_hba *hba = interface->hba;
692 struct fcoe_statistics_params *fw_stats;
693 int rc = 0;
694
695 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
696 if (!fw_stats)
697 return NULL;
698
699 mutex_lock(&hba->hba_stats_mutex);
700
701 bnx2fc_stats = fc_get_host_stats(shost);
702
703 init_completion(&hba->stat_req_done);
704 if (bnx2fc_send_stat_req(hba))
705 goto unlock_stats_mutex;
706 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
707 if (!rc) {
708 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
709 goto unlock_stats_mutex;
710 }
711 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
712 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
713 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
714 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
715 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
716 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
717 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
718 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
719 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
720 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
721
722 bnx2fc_stats->dumped_frames = 0;
723 bnx2fc_stats->lip_count = 0;
724 bnx2fc_stats->nos_count = 0;
725 bnx2fc_stats->loss_of_sync_count = 0;
726 bnx2fc_stats->loss_of_signal_count = 0;
727 bnx2fc_stats->prim_seq_protocol_err_count = 0;
728
729 memcpy(&hba->prev_stats, hba->stats_buffer,
730 sizeof(struct fcoe_statistics_params));
731
732 unlock_stats_mutex:
733 mutex_unlock(&hba->hba_stats_mutex);
734 return bnx2fc_stats;
735 }
736
bnx2fc_shost_config(struct fc_lport * lport,struct device * dev)737 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
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 Scsi_Host *shost = lport->host;
743 int rc = 0;
744
745 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
746 shost->max_lun = bnx2fc_max_luns;
747 shost->max_id = BNX2FC_MAX_FCP_TGT;
748 shost->max_channel = 0;
749 if (lport->vport)
750 shost->transportt = bnx2fc_vport_xport_template;
751 else
752 shost->transportt = bnx2fc_transport_template;
753
754 /* Add the new host to SCSI-ml */
755 rc = scsi_add_host(lport->host, dev);
756 if (rc) {
757 printk(KERN_ERR PFX "Error on scsi_add_host\n");
758 return rc;
759 }
760 if (!lport->vport)
761 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
762 snprintf(fc_host_symbolic_name(lport->host), 256,
763 "%s (QLogic %s) v%s over %s",
764 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
765 interface->netdev->name);
766
767 return 0;
768 }
769
bnx2fc_link_ok(struct fc_lport * lport)770 static int bnx2fc_link_ok(struct fc_lport *lport)
771 {
772 struct fcoe_port *port = lport_priv(lport);
773 struct bnx2fc_interface *interface = port->priv;
774 struct bnx2fc_hba *hba = interface->hba;
775 struct net_device *dev = hba->phys_dev;
776 int rc = 0;
777
778 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
779 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
780 else {
781 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
782 rc = -1;
783 }
784 return rc;
785 }
786
787 /**
788 * bnx2fc_get_link_state - get network link state
789 *
790 * @hba: adapter instance pointer
791 *
792 * updates adapter structure flag based on netdev state
793 */
bnx2fc_get_link_state(struct bnx2fc_hba * hba)794 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
795 {
796 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
797 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
798 else
799 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
800 }
801
bnx2fc_net_config(struct fc_lport * lport,struct net_device * netdev)802 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
803 {
804 struct bnx2fc_hba *hba;
805 struct bnx2fc_interface *interface;
806 struct fcoe_ctlr *ctlr;
807 struct fcoe_port *port;
808 u64 wwnn, wwpn;
809
810 port = lport_priv(lport);
811 interface = port->priv;
812 ctlr = bnx2fc_to_ctlr(interface);
813 hba = interface->hba;
814
815 /* require support for get_pauseparam ethtool op. */
816 if (!hba->phys_dev->ethtool_ops ||
817 !hba->phys_dev->ethtool_ops->get_pauseparam)
818 return -EOPNOTSUPP;
819
820 if (fc_set_mfs(lport, BNX2FC_MFS))
821 return -EINVAL;
822
823 skb_queue_head_init(&port->fcoe_pending_queue);
824 port->fcoe_pending_queue_active = 0;
825 timer_setup(&port->timer, fcoe_queue_timer, 0);
826
827 fcoe_link_speed_update(lport);
828
829 if (!lport->vport) {
830 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
831 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
832 1, 0);
833 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
834 fc_set_wwnn(lport, wwnn);
835
836 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
837 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
838 2, 0);
839
840 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
841 fc_set_wwpn(lport, wwpn);
842 }
843
844 return 0;
845 }
846
bnx2fc_destroy_timer(struct timer_list * t)847 static void bnx2fc_destroy_timer(struct timer_list *t)
848 {
849 struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer);
850
851 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
852 "Destroy compl not received!!\n");
853 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
854 wake_up_interruptible(&hba->destroy_wait);
855 }
856
857 /**
858 * bnx2fc_indicate_netevent - Generic netdev event handler
859 *
860 * @context: adapter structure pointer
861 * @event: event type
862 * @vlan_id: vlan id - associated vlan id with this event
863 *
864 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
865 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
866 */
bnx2fc_indicate_netevent(void * context,unsigned long event,u16 vlan_id)867 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
868 u16 vlan_id)
869 {
870 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
871 struct fcoe_ctlr_device *cdev;
872 struct fc_lport *lport;
873 struct fc_lport *vport;
874 struct bnx2fc_interface *interface, *tmp;
875 struct fcoe_ctlr *ctlr;
876 int wait_for_upload = 0;
877 u32 link_possible = 1;
878
879 if (vlan_id != 0 && event != NETDEV_UNREGISTER)
880 return;
881
882 switch (event) {
883 case NETDEV_UP:
884 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
885 printk(KERN_ERR "indicate_netevent: "\
886 "hba is not UP!!\n");
887 break;
888
889 case NETDEV_DOWN:
890 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
891 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
892 link_possible = 0;
893 break;
894
895 case NETDEV_GOING_DOWN:
896 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
897 link_possible = 0;
898 break;
899
900 case NETDEV_CHANGE:
901 break;
902
903 case NETDEV_UNREGISTER:
904 if (!vlan_id)
905 return;
906 mutex_lock(&bnx2fc_dev_lock);
907 list_for_each_entry_safe(interface, tmp, &if_list, list) {
908 if (interface->hba == hba &&
909 interface->vlan_id == (vlan_id & VLAN_VID_MASK))
910 __bnx2fc_destroy(interface);
911 }
912 mutex_unlock(&bnx2fc_dev_lock);
913 return;
914
915 default:
916 return;
917 }
918
919 mutex_lock(&bnx2fc_dev_lock);
920 list_for_each_entry(interface, &if_list, list) {
921
922 if (interface->hba != hba)
923 continue;
924
925 ctlr = bnx2fc_to_ctlr(interface);
926 lport = ctlr->lp;
927 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
928 interface->netdev->name, event);
929
930 fcoe_link_speed_update(lport);
931
932 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
933
934 if (link_possible && !bnx2fc_link_ok(lport)) {
935 switch (cdev->enabled) {
936 case FCOE_CTLR_DISABLED:
937 pr_info("Link up while interface is disabled.\n");
938 break;
939 case FCOE_CTLR_ENABLED:
940 case FCOE_CTLR_UNUSED:
941 /* Reset max recv frame size to default */
942 fc_set_mfs(lport, BNX2FC_MFS);
943 /*
944 * ctlr link up will only be handled during
945 * enable to avoid sending discovery
946 * solicitation on a stale vlan
947 */
948 if (interface->enabled)
949 fcoe_ctlr_link_up(ctlr);
950 }
951 } else if (fcoe_ctlr_link_down(ctlr)) {
952 switch (cdev->enabled) {
953 case FCOE_CTLR_DISABLED:
954 pr_info("Link down while interface is disabled.\n");
955 break;
956 case FCOE_CTLR_ENABLED:
957 case FCOE_CTLR_UNUSED:
958 mutex_lock(&lport->lp_mutex);
959 list_for_each_entry(vport, &lport->vports, list)
960 fc_host_port_type(vport->host) =
961 FC_PORTTYPE_UNKNOWN;
962 mutex_unlock(&lport->lp_mutex);
963 fc_host_port_type(lport->host) =
964 FC_PORTTYPE_UNKNOWN;
965 per_cpu_ptr(lport->stats,
966 get_cpu())->LinkFailureCount++;
967 put_cpu();
968 fcoe_clean_pending_queue(lport);
969 wait_for_upload = 1;
970 }
971 }
972 }
973 mutex_unlock(&bnx2fc_dev_lock);
974
975 if (wait_for_upload) {
976 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
977 init_waitqueue_head(&hba->shutdown_wait);
978 BNX2FC_MISC_DBG("indicate_netevent "
979 "num_ofld_sess = %d\n",
980 hba->num_ofld_sess);
981 hba->wait_for_link_down = 1;
982 wait_event_interruptible(hba->shutdown_wait,
983 (hba->num_ofld_sess == 0));
984 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
985 hba->num_ofld_sess);
986 hba->wait_for_link_down = 0;
987
988 if (signal_pending(current))
989 flush_signals(current);
990 }
991 }
992
bnx2fc_libfc_config(struct fc_lport * lport)993 static int bnx2fc_libfc_config(struct fc_lport *lport)
994 {
995
996 /* Set the function pointers set by bnx2fc driver */
997 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
998 sizeof(struct libfc_function_template));
999 fc_elsct_init(lport);
1000 fc_exch_init(lport);
1001 fc_disc_init(lport);
1002 fc_disc_config(lport, lport);
1003 return 0;
1004 }
1005
bnx2fc_em_config(struct fc_lport * lport,struct bnx2fc_hba * hba)1006 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
1007 {
1008 int fcoe_min_xid, fcoe_max_xid;
1009
1010 fcoe_min_xid = hba->max_xid + 1;
1011 if (nr_cpu_ids <= 2)
1012 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
1013 else
1014 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
1015 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
1016 fcoe_max_xid, NULL)) {
1017 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
1018 return -ENOMEM;
1019 }
1020
1021 return 0;
1022 }
1023
bnx2fc_lport_config(struct fc_lport * lport)1024 static int bnx2fc_lport_config(struct fc_lport *lport)
1025 {
1026 lport->link_up = 0;
1027 lport->qfull = 0;
1028 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
1029 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
1030 lport->e_d_tov = 2 * 1000;
1031 lport->r_a_tov = 10 * 1000;
1032
1033 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1034 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1035 lport->does_npiv = 1;
1036
1037 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1038 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1039
1040 /* alloc stats structure */
1041 if (fc_lport_init_stats(lport))
1042 return -ENOMEM;
1043
1044 /* Finish fc_lport configuration */
1045 fc_lport_config(lport);
1046
1047 return 0;
1048 }
1049
1050 /**
1051 * bnx2fc_fip_recv - handle a received FIP frame.
1052 *
1053 * @skb: the received skb
1054 * @dev: associated &net_device
1055 * @ptype: the &packet_type structure which was used to register this handler.
1056 * @orig_dev: original receive &net_device, in case @ dev is a bond.
1057 *
1058 * Returns: 0 for success
1059 */
bnx2fc_fip_recv(struct sk_buff * skb,struct net_device * dev,struct packet_type * ptype,struct net_device * orig_dev)1060 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1061 struct packet_type *ptype,
1062 struct net_device *orig_dev)
1063 {
1064 struct bnx2fc_interface *interface;
1065 struct fcoe_ctlr *ctlr;
1066 interface = container_of(ptype, struct bnx2fc_interface,
1067 fip_packet_type);
1068 ctlr = bnx2fc_to_ctlr(interface);
1069 fcoe_ctlr_recv(ctlr, skb);
1070 return 0;
1071 }
1072
1073 /**
1074 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1075 *
1076 * @lport: The local port
1077 * @addr: Location of data to copy
1078 *
1079 * Remove any previously-set unicast MAC filter.
1080 * Add secondary FCoE MAC address filter for our OUI.
1081 */
bnx2fc_update_src_mac(struct fc_lport * lport,u8 * addr)1082 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1083 {
1084 struct fcoe_port *port = lport_priv(lport);
1085
1086 memcpy(port->data_src_addr, addr, ETH_ALEN);
1087 }
1088
1089 /**
1090 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1091 *
1092 * @lport: libfc port
1093 */
bnx2fc_get_src_mac(struct fc_lport * lport)1094 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1095 {
1096 struct fcoe_port *port;
1097
1098 port = (struct fcoe_port *)lport_priv(lport);
1099 return port->data_src_addr;
1100 }
1101
1102 /**
1103 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1104 *
1105 * @fip: FCoE controller.
1106 * @skb: FIP Packet.
1107 */
bnx2fc_fip_send(struct fcoe_ctlr * fip,struct sk_buff * skb)1108 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1109 {
1110 struct fip_header *fiph;
1111 struct ethhdr *eth_hdr;
1112 u16 op;
1113 u8 sub;
1114
1115 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
1116 eth_hdr = (struct ethhdr *)skb_mac_header(skb);
1117 op = ntohs(fiph->fip_op);
1118 sub = fiph->fip_subcode;
1119
1120 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
1121 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
1122 eth_hdr->h_source, eth_hdr->h_dest);
1123
1124 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1125 dev_queue_xmit(skb);
1126 }
1127
bnx2fc_vport_create(struct fc_vport * vport,bool disabled)1128 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1129 {
1130 struct Scsi_Host *shost = vport_to_shost(vport);
1131 struct fc_lport *n_port = shost_priv(shost);
1132 struct fcoe_port *port = lport_priv(n_port);
1133 struct bnx2fc_interface *interface = port->priv;
1134 struct net_device *netdev = interface->netdev;
1135 struct fc_lport *vn_port;
1136 int rc;
1137 char buf[32];
1138
1139 rc = fcoe_validate_vport_create(vport);
1140 if (rc) {
1141 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1142 printk(KERN_ERR PFX "Failed to create vport, "
1143 "WWPN (0x%s) already exists\n",
1144 buf);
1145 return rc;
1146 }
1147
1148 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1149 printk(KERN_ERR PFX "vn ports cannot be created on"
1150 "this interface\n");
1151 return -EIO;
1152 }
1153 rtnl_lock();
1154 mutex_lock(&bnx2fc_dev_lock);
1155 vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1156 mutex_unlock(&bnx2fc_dev_lock);
1157 rtnl_unlock();
1158
1159 if (!vn_port) {
1160 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1161 netdev->name);
1162 return -EIO;
1163 }
1164
1165 if (bnx2fc_devloss_tmo)
1166 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
1167
1168 if (disabled) {
1169 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1170 } else {
1171 vn_port->boot_time = jiffies;
1172 fc_lport_init(vn_port);
1173 fc_fabric_login(vn_port);
1174 fc_vport_setlink(vn_port);
1175 }
1176 return 0;
1177 }
1178
bnx2fc_free_vport(struct bnx2fc_hba * hba,struct fc_lport * lport)1179 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1180 {
1181 struct bnx2fc_lport *blport, *tmp;
1182
1183 spin_lock_bh(&hba->hba_lock);
1184 list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1185 if (blport->lport == lport) {
1186 list_del(&blport->list);
1187 kfree(blport);
1188 }
1189 }
1190 spin_unlock_bh(&hba->hba_lock);
1191 }
1192
bnx2fc_vport_destroy(struct fc_vport * vport)1193 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1194 {
1195 struct Scsi_Host *shost = vport_to_shost(vport);
1196 struct fc_lport *n_port = shost_priv(shost);
1197 struct fc_lport *vn_port = vport->dd_data;
1198 struct fcoe_port *port = lport_priv(vn_port);
1199 struct bnx2fc_interface *interface = port->priv;
1200 struct fc_lport *v_port;
1201 bool found = false;
1202
1203 mutex_lock(&n_port->lp_mutex);
1204 list_for_each_entry(v_port, &n_port->vports, list)
1205 if (v_port->vport == vport) {
1206 found = true;
1207 break;
1208 }
1209
1210 if (!found) {
1211 mutex_unlock(&n_port->lp_mutex);
1212 return -ENOENT;
1213 }
1214 list_del(&vn_port->list);
1215 mutex_unlock(&n_port->lp_mutex);
1216 bnx2fc_free_vport(interface->hba, port->lport);
1217 bnx2fc_port_shutdown(port->lport);
1218 bnx2fc_port_destroy(port);
1219 bnx2fc_interface_put(interface);
1220 return 0;
1221 }
1222
bnx2fc_vport_disable(struct fc_vport * vport,bool disable)1223 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1224 {
1225 struct fc_lport *lport = vport->dd_data;
1226
1227 if (disable) {
1228 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1229 fc_fabric_logoff(lport);
1230 } else {
1231 lport->boot_time = jiffies;
1232 fc_fabric_login(lport);
1233 fc_vport_setlink(lport);
1234 }
1235 return 0;
1236 }
1237
1238
bnx2fc_interface_setup(struct bnx2fc_interface * interface)1239 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1240 {
1241 struct net_device *netdev = interface->netdev;
1242 struct net_device *physdev = interface->hba->phys_dev;
1243 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1244 struct netdev_hw_addr *ha;
1245 int sel_san_mac = 0;
1246
1247 /* setup Source MAC Address */
1248 rcu_read_lock();
1249 for_each_dev_addr(physdev, ha) {
1250 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1251 ha->type);
1252 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1253 ha->addr[1], ha->addr[2], ha->addr[3],
1254 ha->addr[4], ha->addr[5]);
1255
1256 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1257 (is_valid_ether_addr(ha->addr))) {
1258 memcpy(ctlr->ctl_src_addr, ha->addr,
1259 ETH_ALEN);
1260 sel_san_mac = 1;
1261 BNX2FC_MISC_DBG("Found SAN MAC\n");
1262 }
1263 }
1264 rcu_read_unlock();
1265
1266 if (!sel_san_mac)
1267 return -ENODEV;
1268
1269 interface->fip_packet_type.func = bnx2fc_fip_recv;
1270 interface->fip_packet_type.type = htons(ETH_P_FIP);
1271 interface->fip_packet_type.dev = netdev;
1272 dev_add_pack(&interface->fip_packet_type);
1273
1274 interface->fcoe_packet_type.func = bnx2fc_rcv;
1275 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1276 interface->fcoe_packet_type.dev = netdev;
1277 dev_add_pack(&interface->fcoe_packet_type);
1278
1279 return 0;
1280 }
1281
bnx2fc_attach_transport(void)1282 static int bnx2fc_attach_transport(void)
1283 {
1284 bnx2fc_transport_template =
1285 fc_attach_transport(&bnx2fc_transport_function);
1286
1287 if (bnx2fc_transport_template == NULL) {
1288 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1289 return -ENODEV;
1290 }
1291
1292 bnx2fc_vport_xport_template =
1293 fc_attach_transport(&bnx2fc_vport_xport_function);
1294 if (bnx2fc_vport_xport_template == NULL) {
1295 printk(KERN_ERR PFX
1296 "Failed to attach FC transport for vport\n");
1297 fc_release_transport(bnx2fc_transport_template);
1298 bnx2fc_transport_template = NULL;
1299 return -ENODEV;
1300 }
1301 return 0;
1302 }
bnx2fc_release_transport(void)1303 static void bnx2fc_release_transport(void)
1304 {
1305 fc_release_transport(bnx2fc_transport_template);
1306 fc_release_transport(bnx2fc_vport_xport_template);
1307 bnx2fc_transport_template = NULL;
1308 bnx2fc_vport_xport_template = NULL;
1309 }
1310
bnx2fc_interface_release(struct kref * kref)1311 static void bnx2fc_interface_release(struct kref *kref)
1312 {
1313 struct fcoe_ctlr_device *ctlr_dev;
1314 struct bnx2fc_interface *interface;
1315 struct fcoe_ctlr *ctlr;
1316 struct net_device *netdev;
1317
1318 interface = container_of(kref, struct bnx2fc_interface, kref);
1319 BNX2FC_MISC_DBG("Interface is being released\n");
1320
1321 ctlr = bnx2fc_to_ctlr(interface);
1322 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1323 netdev = interface->netdev;
1324
1325 /* tear-down FIP controller */
1326 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1327 fcoe_ctlr_destroy(ctlr);
1328
1329 fcoe_ctlr_device_delete(ctlr_dev);
1330
1331 dev_put(netdev);
1332 module_put(THIS_MODULE);
1333 }
1334
bnx2fc_interface_get(struct bnx2fc_interface * interface)1335 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1336 {
1337 kref_get(&interface->kref);
1338 }
1339
bnx2fc_interface_put(struct bnx2fc_interface * interface)1340 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1341 {
1342 kref_put(&interface->kref, bnx2fc_interface_release);
1343 }
bnx2fc_hba_destroy(struct bnx2fc_hba * hba)1344 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1345 {
1346 /* Free the command manager */
1347 if (hba->cmd_mgr) {
1348 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1349 hba->cmd_mgr = NULL;
1350 }
1351 kfree(hba->tgt_ofld_list);
1352 bnx2fc_unbind_pcidev(hba);
1353 kfree(hba);
1354 }
1355
1356 /**
1357 * bnx2fc_hba_create - create a new bnx2fc hba
1358 *
1359 * @cnic: pointer to cnic device
1360 *
1361 * Creates a new FCoE hba on the given device.
1362 *
1363 */
bnx2fc_hba_create(struct cnic_dev * cnic)1364 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1365 {
1366 struct bnx2fc_hba *hba;
1367 struct fcoe_capabilities *fcoe_cap;
1368 int rc;
1369
1370 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1371 if (!hba) {
1372 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1373 return NULL;
1374 }
1375 spin_lock_init(&hba->hba_lock);
1376 mutex_init(&hba->hba_mutex);
1377 mutex_init(&hba->hba_stats_mutex);
1378
1379 hba->cnic = cnic;
1380
1381 hba->max_tasks = cnic->max_fcoe_exchanges;
1382 hba->elstm_xids = (hba->max_tasks / 2);
1383 hba->max_outstanding_cmds = hba->elstm_xids;
1384 hba->max_xid = (hba->max_tasks - 1);
1385
1386 rc = bnx2fc_bind_pcidev(hba);
1387 if (rc) {
1388 printk(KERN_ERR PFX "create_adapter: bind error\n");
1389 goto bind_err;
1390 }
1391 hba->phys_dev = cnic->netdev;
1392 hba->next_conn_id = 0;
1393
1394 hba->tgt_ofld_list =
1395 kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *),
1396 GFP_KERNEL);
1397 if (!hba->tgt_ofld_list) {
1398 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1399 goto tgtofld_err;
1400 }
1401
1402 hba->num_ofld_sess = 0;
1403
1404 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1405 if (!hba->cmd_mgr) {
1406 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1407 goto cmgr_err;
1408 }
1409 fcoe_cap = &hba->fcoe_cap;
1410
1411 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1412 FCOE_IOS_PER_CONNECTION_SHIFT;
1413 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1414 FCOE_LOGINS_PER_PORT_SHIFT;
1415 fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1416 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1417 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1418 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1419 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1420 FCOE_TARGETS_SUPPORTED_SHIFT;
1421 fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1422 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1423 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1424
1425 init_waitqueue_head(&hba->shutdown_wait);
1426 init_waitqueue_head(&hba->destroy_wait);
1427 INIT_LIST_HEAD(&hba->vports);
1428
1429 return hba;
1430
1431 cmgr_err:
1432 kfree(hba->tgt_ofld_list);
1433 tgtofld_err:
1434 bnx2fc_unbind_pcidev(hba);
1435 bind_err:
1436 kfree(hba);
1437 return NULL;
1438 }
1439
1440 static struct bnx2fc_interface *
bnx2fc_interface_create(struct bnx2fc_hba * hba,struct net_device * netdev,enum fip_mode fip_mode)1441 bnx2fc_interface_create(struct bnx2fc_hba *hba,
1442 struct net_device *netdev,
1443 enum fip_mode fip_mode)
1444 {
1445 struct fcoe_ctlr_device *ctlr_dev;
1446 struct bnx2fc_interface *interface;
1447 struct fcoe_ctlr *ctlr;
1448 int size;
1449 int rc = 0;
1450
1451 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1452 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1453 size);
1454 if (!ctlr_dev) {
1455 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1456 return NULL;
1457 }
1458 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1459 ctlr->cdev = ctlr_dev;
1460 interface = fcoe_ctlr_priv(ctlr);
1461 dev_hold(netdev);
1462 kref_init(&interface->kref);
1463 interface->hba = hba;
1464 interface->netdev = netdev;
1465
1466 /* Initialize FIP */
1467 fcoe_ctlr_init(ctlr, fip_mode);
1468 ctlr->send = bnx2fc_fip_send;
1469 ctlr->update_mac = bnx2fc_update_src_mac;
1470 ctlr->get_src_addr = bnx2fc_get_src_mac;
1471 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1472
1473 rc = bnx2fc_interface_setup(interface);
1474 if (!rc)
1475 return interface;
1476
1477 fcoe_ctlr_destroy(ctlr);
1478 dev_put(netdev);
1479 fcoe_ctlr_device_delete(ctlr_dev);
1480 return NULL;
1481 }
1482
1483 /**
1484 * bnx2fc_if_create - Create FCoE instance on a given interface
1485 *
1486 * @interface: FCoE interface to create a local port on
1487 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1488 * @npiv: Indicates if the port is vport or not
1489 *
1490 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1491 *
1492 * Returns: Allocated fc_lport or an error pointer
1493 */
bnx2fc_if_create(struct bnx2fc_interface * interface,struct device * parent,int npiv)1494 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1495 struct device *parent, int npiv)
1496 {
1497 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1498 struct fc_lport *lport, *n_port;
1499 struct fcoe_port *port;
1500 struct Scsi_Host *shost;
1501 struct fc_vport *vport = dev_to_vport(parent);
1502 struct bnx2fc_lport *blport;
1503 struct bnx2fc_hba *hba = interface->hba;
1504 int rc = 0;
1505
1506 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1507 if (!blport) {
1508 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1509 return NULL;
1510 }
1511
1512 /* Allocate Scsi_Host structure */
1513 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1514 if (!npiv)
1515 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1516 else
1517 lport = libfc_vport_create(vport, sizeof(*port));
1518
1519 if (!lport) {
1520 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1521 goto free_blport;
1522 }
1523 shost = lport->host;
1524 port = lport_priv(lport);
1525 port->lport = lport;
1526 port->priv = interface;
1527 port->get_netdev = bnx2fc_netdev;
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
bnx2fc_net_cleanup(struct bnx2fc_interface * interface)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
bnx2fc_interface_cleanup(struct bnx2fc_interface * interface)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
bnx2fc_if_destroy(struct fc_lport * lport)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
__bnx2fc_destroy(struct bnx2fc_interface * interface)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_port_destroy(port);
1656 bnx2fc_interface_put(interface);
1657 }
1658
1659 /**
1660 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1661 *
1662 * @netdev: The net device that the FCoE interface is on
1663 *
1664 * Called from sysfs.
1665 *
1666 * Returns: 0 for success
1667 */
bnx2fc_destroy(struct net_device * netdev)1668 static int bnx2fc_destroy(struct net_device *netdev)
1669 {
1670 struct bnx2fc_interface *interface = NULL;
1671 struct workqueue_struct *timer_work_queue;
1672 struct fcoe_ctlr *ctlr;
1673 int rc = 0;
1674
1675 rtnl_lock();
1676 mutex_lock(&bnx2fc_dev_lock);
1677
1678 interface = bnx2fc_interface_lookup(netdev);
1679 ctlr = bnx2fc_to_ctlr(interface);
1680 if (!interface || !ctlr->lp) {
1681 rc = -ENODEV;
1682 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1683 goto netdev_err;
1684 }
1685
1686 timer_work_queue = interface->timer_work_queue;
1687 __bnx2fc_destroy(interface);
1688 destroy_workqueue(timer_work_queue);
1689
1690 netdev_err:
1691 mutex_unlock(&bnx2fc_dev_lock);
1692 rtnl_unlock();
1693 return rc;
1694 }
1695
bnx2fc_port_destroy(struct fcoe_port * port)1696 static void bnx2fc_port_destroy(struct fcoe_port *port)
1697 {
1698 struct fc_lport *lport;
1699
1700 lport = port->lport;
1701 BNX2FC_HBA_DBG(lport, "Entered %s, destroying lport %p\n", __func__, lport);
1702
1703 bnx2fc_if_destroy(lport);
1704 }
1705
bnx2fc_unbind_adapter_devices(struct bnx2fc_hba * hba)1706 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1707 {
1708 bnx2fc_free_fw_resc(hba);
1709 bnx2fc_free_task_ctx(hba);
1710 }
1711
1712 /**
1713 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1714 * pci structure
1715 *
1716 * @hba: Adapter instance
1717 */
bnx2fc_bind_adapter_devices(struct bnx2fc_hba * hba)1718 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1719 {
1720 if (bnx2fc_setup_task_ctx(hba))
1721 goto mem_err;
1722
1723 if (bnx2fc_setup_fw_resc(hba))
1724 goto mem_err;
1725
1726 return 0;
1727 mem_err:
1728 bnx2fc_unbind_adapter_devices(hba);
1729 return -ENOMEM;
1730 }
1731
bnx2fc_bind_pcidev(struct bnx2fc_hba * hba)1732 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1733 {
1734 struct cnic_dev *cnic;
1735 struct pci_dev *pdev;
1736
1737 if (!hba->cnic) {
1738 printk(KERN_ERR PFX "cnic is NULL\n");
1739 return -ENODEV;
1740 }
1741 cnic = hba->cnic;
1742 pdev = hba->pcidev = cnic->pcidev;
1743 if (!hba->pcidev)
1744 return -ENODEV;
1745
1746 switch (pdev->device) {
1747 case PCI_DEVICE_ID_NX2_57710:
1748 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1749 break;
1750 case PCI_DEVICE_ID_NX2_57711:
1751 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1752 break;
1753 case PCI_DEVICE_ID_NX2_57712:
1754 case PCI_DEVICE_ID_NX2_57712_MF:
1755 case PCI_DEVICE_ID_NX2_57712_VF:
1756 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1757 break;
1758 case PCI_DEVICE_ID_NX2_57800:
1759 case PCI_DEVICE_ID_NX2_57800_MF:
1760 case PCI_DEVICE_ID_NX2_57800_VF:
1761 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1762 break;
1763 case PCI_DEVICE_ID_NX2_57810:
1764 case PCI_DEVICE_ID_NX2_57810_MF:
1765 case PCI_DEVICE_ID_NX2_57810_VF:
1766 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1767 break;
1768 case PCI_DEVICE_ID_NX2_57840:
1769 case PCI_DEVICE_ID_NX2_57840_MF:
1770 case PCI_DEVICE_ID_NX2_57840_VF:
1771 case PCI_DEVICE_ID_NX2_57840_2_20:
1772 case PCI_DEVICE_ID_NX2_57840_4_10:
1773 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1774 break;
1775 default:
1776 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1777 break;
1778 }
1779 pci_dev_get(hba->pcidev);
1780 return 0;
1781 }
1782
bnx2fc_unbind_pcidev(struct bnx2fc_hba * hba)1783 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1784 {
1785 if (hba->pcidev) {
1786 hba->chip_num[0] = '\0';
1787 pci_dev_put(hba->pcidev);
1788 }
1789 hba->pcidev = NULL;
1790 }
1791
1792 /**
1793 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1794 *
1795 * @handle: transport handle pointing to adapter struture
1796 */
bnx2fc_ulp_get_stats(void * handle)1797 static int bnx2fc_ulp_get_stats(void *handle)
1798 {
1799 struct bnx2fc_hba *hba = handle;
1800 struct cnic_dev *cnic;
1801 struct fcoe_stats_info *stats_addr;
1802
1803 if (!hba)
1804 return -EINVAL;
1805
1806 cnic = hba->cnic;
1807 stats_addr = &cnic->stats_addr->fcoe_stat;
1808 if (!stats_addr)
1809 return -EINVAL;
1810
1811 strncpy(stats_addr->version, BNX2FC_VERSION,
1812 sizeof(stats_addr->version));
1813 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1814 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1815
1816 return 0;
1817 }
1818
1819
1820 /**
1821 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1822 *
1823 * @handle: transport handle pointing to adapter structure
1824 *
1825 * This function maps adapter structure to pcidev structure and initiates
1826 * firmware handshake to enable/initialize on-chip FCoE components.
1827 * This bnx2fc - cnic interface api callback is used after following
1828 * conditions are met -
1829 * a) underlying network interface is up (marked by event NETDEV_UP
1830 * from netdev
1831 * b) bnx2fc adatper structure is registered.
1832 */
bnx2fc_ulp_start(void * handle)1833 static void bnx2fc_ulp_start(void *handle)
1834 {
1835 struct bnx2fc_hba *hba = handle;
1836 struct bnx2fc_interface *interface;
1837 struct fcoe_ctlr *ctlr;
1838 struct fc_lport *lport;
1839
1840 mutex_lock(&bnx2fc_dev_lock);
1841
1842 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1843 bnx2fc_fw_init(hba);
1844
1845 BNX2FC_MISC_DBG("bnx2fc started.\n");
1846
1847 list_for_each_entry(interface, &if_list, list) {
1848 if (interface->hba == hba) {
1849 ctlr = bnx2fc_to_ctlr(interface);
1850 lport = ctlr->lp;
1851 /* Kick off Fabric discovery*/
1852 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1853 lport->tt.frame_send = bnx2fc_xmit;
1854 bnx2fc_start_disc(interface);
1855 }
1856 }
1857
1858 mutex_unlock(&bnx2fc_dev_lock);
1859 }
1860
bnx2fc_port_shutdown(struct fc_lport * lport)1861 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1862 {
1863 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1864 fc_fabric_logoff(lport);
1865 fc_lport_destroy(lport);
1866 }
1867
bnx2fc_stop(struct bnx2fc_interface * interface)1868 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1869 {
1870 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1871 struct fc_lport *lport;
1872 struct fc_lport *vport;
1873
1874 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1875 return;
1876
1877 lport = ctlr->lp;
1878 bnx2fc_port_shutdown(lport);
1879
1880 mutex_lock(&lport->lp_mutex);
1881 list_for_each_entry(vport, &lport->vports, list)
1882 fc_host_port_type(vport->host) =
1883 FC_PORTTYPE_UNKNOWN;
1884 mutex_unlock(&lport->lp_mutex);
1885 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1886 fcoe_ctlr_link_down(ctlr);
1887 fcoe_clean_pending_queue(lport);
1888 }
1889
bnx2fc_fw_init(struct bnx2fc_hba * hba)1890 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1891 {
1892 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1893 int rc = -1;
1894 int i = HZ;
1895
1896 rc = bnx2fc_bind_adapter_devices(hba);
1897 if (rc) {
1898 printk(KERN_ALERT PFX
1899 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1900 goto err_out;
1901 }
1902
1903 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1904 if (rc) {
1905 printk(KERN_ALERT PFX
1906 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1907 goto err_unbind;
1908 }
1909
1910 /*
1911 * Wait until the adapter init message is complete, and adapter
1912 * state is UP.
1913 */
1914 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1915 msleep(BNX2FC_INIT_POLL_TIME);
1916
1917 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1918 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1919 "Ignoring...\n",
1920 hba->cnic->netdev->name);
1921 rc = -1;
1922 goto err_unbind;
1923 }
1924
1925
1926 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1927 return 0;
1928
1929 err_unbind:
1930 bnx2fc_unbind_adapter_devices(hba);
1931 err_out:
1932 return rc;
1933 }
1934
bnx2fc_fw_destroy(struct bnx2fc_hba * hba)1935 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1936 {
1937 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1938 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1939 timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer,
1940 0);
1941 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1942 jiffies;
1943 add_timer(&hba->destroy_timer);
1944 wait_event_interruptible(hba->destroy_wait,
1945 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1946 &hba->flags));
1947 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1948 /* This should never happen */
1949 if (signal_pending(current))
1950 flush_signals(current);
1951
1952 del_timer_sync(&hba->destroy_timer);
1953 }
1954 bnx2fc_unbind_adapter_devices(hba);
1955 }
1956 }
1957
1958 /**
1959 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1960 *
1961 * @handle: transport handle pointing to adapter structure
1962 *
1963 * Driver checks if adapter is already in shutdown mode, if not start
1964 * the shutdown process.
1965 */
bnx2fc_ulp_stop(void * handle)1966 static void bnx2fc_ulp_stop(void *handle)
1967 {
1968 struct bnx2fc_hba *hba = handle;
1969 struct bnx2fc_interface *interface;
1970
1971 printk(KERN_ERR "ULP_STOP\n");
1972
1973 mutex_lock(&bnx2fc_dev_lock);
1974 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1975 goto exit;
1976 list_for_each_entry(interface, &if_list, list) {
1977 if (interface->hba == hba)
1978 bnx2fc_stop(interface);
1979 }
1980 BUG_ON(hba->num_ofld_sess != 0);
1981
1982 mutex_lock(&hba->hba_mutex);
1983 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1984 clear_bit(ADAPTER_STATE_GOING_DOWN,
1985 &hba->adapter_state);
1986
1987 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1988 mutex_unlock(&hba->hba_mutex);
1989
1990 bnx2fc_fw_destroy(hba);
1991 exit:
1992 mutex_unlock(&bnx2fc_dev_lock);
1993 }
1994
bnx2fc_start_disc(struct bnx2fc_interface * interface)1995 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1996 {
1997 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1998 struct fc_lport *lport;
1999 int wait_cnt = 0;
2000
2001 BNX2FC_MISC_DBG("Entered %s\n", __func__);
2002 /* Kick off FIP/FLOGI */
2003 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
2004 printk(KERN_ERR PFX "Init not done yet\n");
2005 return;
2006 }
2007
2008 lport = ctlr->lp;
2009 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
2010
2011 if (!bnx2fc_link_ok(lport) && interface->enabled) {
2012 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
2013 fcoe_ctlr_link_up(ctlr);
2014 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2015 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2016 }
2017
2018 /* wait for the FCF to be selected before issuing FLOGI */
2019 while (!ctlr->sel_fcf) {
2020 msleep(250);
2021 /* give up after 3 secs */
2022 if (++wait_cnt > 12)
2023 break;
2024 }
2025
2026 /* Reset max receive frame size to default */
2027 if (fc_set_mfs(lport, BNX2FC_MFS))
2028 return;
2029
2030 fc_lport_init(lport);
2031 fc_fabric_login(lport);
2032 }
2033
2034
2035 /**
2036 * bnx2fc_ulp_init - Initialize an adapter instance
2037 *
2038 * @dev : cnic device handle
2039 * Called from cnic_register_driver() context to initialize all
2040 * enumerated cnic devices. This routine allocates adapter structure
2041 * and other device specific resources.
2042 */
bnx2fc_ulp_init(struct cnic_dev * dev)2043 static void bnx2fc_ulp_init(struct cnic_dev *dev)
2044 {
2045 struct bnx2fc_hba *hba;
2046 int rc = 0;
2047
2048 BNX2FC_MISC_DBG("Entered %s\n", __func__);
2049 /* bnx2fc works only when bnx2x is loaded */
2050 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
2051 (dev->max_fcoe_conn == 0)) {
2052 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
2053 " flags: %lx fcoe_conn: %d\n",
2054 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
2055 return;
2056 }
2057
2058 hba = bnx2fc_hba_create(dev);
2059 if (!hba) {
2060 printk(KERN_ERR PFX "hba initialization failed\n");
2061 return;
2062 }
2063
2064 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
2065
2066 /* Add HBA to the adapter list */
2067 mutex_lock(&bnx2fc_dev_lock);
2068 list_add_tail(&hba->list, &adapter_list);
2069 adapter_count++;
2070 mutex_unlock(&bnx2fc_dev_lock);
2071
2072 dev->fcoe_cap = &hba->fcoe_cap;
2073 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2074 rc = dev->register_device(dev, CNIC_ULP_FCOE,
2075 (void *) hba);
2076 if (rc)
2077 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2078 else
2079 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2080 }
2081
2082 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
__bnx2fc_disable(struct fcoe_ctlr * ctlr)2083 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2084 {
2085 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2086
2087 if (interface->enabled == true) {
2088 if (!ctlr->lp) {
2089 pr_err(PFX "__bnx2fc_disable: lport not found\n");
2090 return -ENODEV;
2091 } else {
2092 interface->enabled = false;
2093 fcoe_ctlr_link_down(ctlr);
2094 fcoe_clean_pending_queue(ctlr->lp);
2095 }
2096 }
2097 return 0;
2098 }
2099
2100 /*
2101 * Deperecated: Use bnx2fc_enabled()
2102 */
bnx2fc_disable(struct net_device * netdev)2103 static int bnx2fc_disable(struct net_device *netdev)
2104 {
2105 struct bnx2fc_interface *interface;
2106 struct fcoe_ctlr *ctlr;
2107 int rc = 0;
2108
2109 rtnl_lock();
2110 mutex_lock(&bnx2fc_dev_lock);
2111
2112 interface = bnx2fc_interface_lookup(netdev);
2113 ctlr = bnx2fc_to_ctlr(interface);
2114
2115 if (!interface) {
2116 rc = -ENODEV;
2117 pr_err(PFX "bnx2fc_disable: interface not found\n");
2118 } else {
2119 rc = __bnx2fc_disable(ctlr);
2120 }
2121 mutex_unlock(&bnx2fc_dev_lock);
2122 rtnl_unlock();
2123 return rc;
2124 }
2125
bnx2fc_npiv_create_vports(struct fc_lport * lport,struct cnic_fc_npiv_tbl * npiv_tbl)2126 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2127 struct cnic_fc_npiv_tbl *npiv_tbl)
2128 {
2129 struct fc_vport_identifiers vpid;
2130 uint i, created = 0;
2131 u64 wwnn = 0;
2132 char wwpn_str[32];
2133 char wwnn_str[32];
2134
2135 if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2136 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2137 goto done;
2138 }
2139
2140 /* Sanity check the first entry to make sure it's not 0 */
2141 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2142 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2143 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2144 goto done;
2145 }
2146
2147 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2148 vpid.vport_type = FC_PORTTYPE_NPIV;
2149 vpid.disable = false;
2150
2151 for (i = 0; i < npiv_tbl->count; i++) {
2152 wwnn = wwn_to_u64(npiv_tbl->wwnn[i]);
2153 if (wwnn == 0) {
2154 /*
2155 * If we get a 0 element from for the WWNN then assume
2156 * the WWNN should be the same as the physical port.
2157 */
2158 wwnn = lport->wwnn;
2159 }
2160 vpid.node_name = wwnn;
2161 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2162 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2163 "NPIV[%u]:%016llx-%016llx",
2164 created, vpid.port_name, vpid.node_name);
2165 fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str));
2166 fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str));
2167 BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str,
2168 wwpn_str);
2169 if (fc_vport_create(lport->host, 0, &vpid))
2170 created++;
2171 else
2172 BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2173 }
2174 done:
2175 return created;
2176 }
2177
__bnx2fc_enable(struct fcoe_ctlr * ctlr)2178 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2179 {
2180 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2181 struct bnx2fc_hba *hba;
2182 struct cnic_fc_npiv_tbl *npiv_tbl;
2183 struct fc_lport *lport;
2184
2185 if (interface->enabled == false) {
2186 if (!ctlr->lp) {
2187 pr_err(PFX "__bnx2fc_enable: lport not found\n");
2188 return -ENODEV;
2189 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2190 fcoe_ctlr_link_up(ctlr);
2191 interface->enabled = true;
2192 }
2193 }
2194
2195 /* Create static NPIV ports if any are contained in NVRAM */
2196 hba = interface->hba;
2197 lport = ctlr->lp;
2198
2199 if (!hba)
2200 goto done;
2201
2202 if (!hba->cnic)
2203 goto done;
2204
2205 if (!lport)
2206 goto done;
2207
2208 if (!lport->host)
2209 goto done;
2210
2211 if (!hba->cnic->get_fc_npiv_tbl)
2212 goto done;
2213
2214 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2215 if (!npiv_tbl)
2216 goto done;
2217
2218 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2219 goto done_free;
2220
2221 bnx2fc_npiv_create_vports(lport, npiv_tbl);
2222 done_free:
2223 kfree(npiv_tbl);
2224 done:
2225 return 0;
2226 }
2227
2228 /*
2229 * Deprecated: Use bnx2fc_enabled()
2230 */
bnx2fc_enable(struct net_device * netdev)2231 static int bnx2fc_enable(struct net_device *netdev)
2232 {
2233 struct bnx2fc_interface *interface;
2234 struct fcoe_ctlr *ctlr;
2235 int rc = 0;
2236
2237 rtnl_lock();
2238 mutex_lock(&bnx2fc_dev_lock);
2239
2240 interface = bnx2fc_interface_lookup(netdev);
2241 ctlr = bnx2fc_to_ctlr(interface);
2242 if (!interface) {
2243 rc = -ENODEV;
2244 pr_err(PFX "bnx2fc_enable: interface not found\n");
2245 } else {
2246 rc = __bnx2fc_enable(ctlr);
2247 }
2248
2249 mutex_unlock(&bnx2fc_dev_lock);
2250 rtnl_unlock();
2251 return rc;
2252 }
2253
2254 /**
2255 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2256 * @cdev: The FCoE Controller that is being enabled or disabled
2257 *
2258 * fcoe_sysfs will ensure that the state of 'enabled' has
2259 * changed, so no checking is necessary here. This routine simply
2260 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2261 * When those routines are removed the functionality can be merged
2262 * here.
2263 */
bnx2fc_ctlr_enabled(struct fcoe_ctlr_device * cdev)2264 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2265 {
2266 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2267
2268 switch (cdev->enabled) {
2269 case FCOE_CTLR_ENABLED:
2270 return __bnx2fc_enable(ctlr);
2271 case FCOE_CTLR_DISABLED:
2272 return __bnx2fc_disable(ctlr);
2273 case FCOE_CTLR_UNUSED:
2274 default:
2275 return -ENOTSUPP;
2276 };
2277 }
2278
2279 enum bnx2fc_create_link_state {
2280 BNX2FC_CREATE_LINK_DOWN,
2281 BNX2FC_CREATE_LINK_UP,
2282 };
2283
2284 /**
2285 * _bnx2fc_create() - Create bnx2fc FCoE interface
2286 * @netdev : The net_device object the Ethernet interface to create on
2287 * @fip_mode: The FIP mode for this creation
2288 * @link_state: The ctlr link state on creation
2289 *
2290 * Called from either the libfcoe 'create' module parameter
2291 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2292 *
2293 * libfcoe's 'create' module parameter is deprecated so some
2294 * consolidation of code can be done when that interface is
2295 * removed.
2296 *
2297 * Returns: 0 for success
2298 */
_bnx2fc_create(struct net_device * netdev,enum fip_mode fip_mode,enum bnx2fc_create_link_state link_state)2299 static int _bnx2fc_create(struct net_device *netdev,
2300 enum fip_mode fip_mode,
2301 enum bnx2fc_create_link_state link_state)
2302 {
2303 struct fcoe_ctlr_device *cdev;
2304 struct fcoe_ctlr *ctlr;
2305 struct bnx2fc_interface *interface;
2306 struct bnx2fc_hba *hba;
2307 struct net_device *phys_dev = netdev;
2308 struct fc_lport *lport;
2309 struct ethtool_drvinfo drvinfo;
2310 int rc = 0;
2311 int vlan_id = 0;
2312
2313 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2314 if (fip_mode != FIP_MODE_FABRIC) {
2315 printk(KERN_ERR "fip mode not FABRIC\n");
2316 return -EIO;
2317 }
2318
2319 rtnl_lock();
2320
2321 mutex_lock(&bnx2fc_dev_lock);
2322
2323 if (!try_module_get(THIS_MODULE)) {
2324 rc = -EINVAL;
2325 goto mod_err;
2326 }
2327
2328 /* obtain physical netdev */
2329 if (is_vlan_dev(netdev))
2330 phys_dev = vlan_dev_real_dev(netdev);
2331
2332 /* verify if the physical device is a netxtreme2 device */
2333 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2334 memset(&drvinfo, 0, sizeof(drvinfo));
2335 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2336 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2337 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2338 rc = -EINVAL;
2339 goto netdev_err;
2340 }
2341 } else {
2342 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2343 rc = -EINVAL;
2344 goto netdev_err;
2345 }
2346
2347 /* obtain interface and initialize rest of the structure */
2348 hba = bnx2fc_hba_lookup(phys_dev);
2349 if (!hba) {
2350 rc = -ENODEV;
2351 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2352 goto netdev_err;
2353 }
2354
2355 if (bnx2fc_interface_lookup(netdev)) {
2356 rc = -EEXIST;
2357 goto netdev_err;
2358 }
2359
2360 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2361 if (!interface) {
2362 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2363 rc = -ENOMEM;
2364 goto netdev_err;
2365 }
2366
2367 if (is_vlan_dev(netdev)) {
2368 vlan_id = vlan_dev_vlan_id(netdev);
2369 interface->vlan_enabled = 1;
2370 }
2371
2372 ctlr = bnx2fc_to_ctlr(interface);
2373 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2374 interface->vlan_id = vlan_id;
2375 interface->tm_timeout = BNX2FC_TM_TIMEOUT;
2376
2377 interface->timer_work_queue =
2378 create_singlethread_workqueue("bnx2fc_timer_wq");
2379 if (!interface->timer_work_queue) {
2380 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2381 rc = -EINVAL;
2382 goto ifput_err;
2383 }
2384
2385 lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2386 if (!lport) {
2387 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2388 netdev->name);
2389 rc = -EINVAL;
2390 goto if_create_err;
2391 }
2392
2393 /* Add interface to if_list */
2394 list_add_tail(&interface->list, &if_list);
2395
2396 lport->boot_time = jiffies;
2397
2398 /* Make this master N_port */
2399 ctlr->lp = lport;
2400
2401 if (link_state == BNX2FC_CREATE_LINK_UP)
2402 cdev->enabled = FCOE_CTLR_ENABLED;
2403 else
2404 cdev->enabled = FCOE_CTLR_DISABLED;
2405
2406 if (link_state == BNX2FC_CREATE_LINK_UP &&
2407 !bnx2fc_link_ok(lport)) {
2408 fcoe_ctlr_link_up(ctlr);
2409 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2410 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2411 }
2412
2413 BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2414 bnx2fc_start_disc(interface);
2415
2416 if (link_state == BNX2FC_CREATE_LINK_UP)
2417 interface->enabled = true;
2418
2419 /*
2420 * Release from kref_init in bnx2fc_interface_setup, on success
2421 * lport should be holding a reference taken in bnx2fc_if_create
2422 */
2423 bnx2fc_interface_put(interface);
2424 /* put netdev that was held while calling dev_get_by_name */
2425 mutex_unlock(&bnx2fc_dev_lock);
2426 rtnl_unlock();
2427 return 0;
2428
2429 if_create_err:
2430 destroy_workqueue(interface->timer_work_queue);
2431 ifput_err:
2432 bnx2fc_net_cleanup(interface);
2433 bnx2fc_interface_put(interface);
2434 goto mod_err;
2435 netdev_err:
2436 module_put(THIS_MODULE);
2437 mod_err:
2438 mutex_unlock(&bnx2fc_dev_lock);
2439 rtnl_unlock();
2440 return rc;
2441 }
2442
2443 /**
2444 * bnx2fc_create() - Create a bnx2fc interface
2445 * @netdev : The net_device object the Ethernet interface to create on
2446 * @fip_mode: The FIP mode for this creation
2447 *
2448 * Called from fcoe transport
2449 *
2450 * Returns: 0 for success
2451 */
bnx2fc_create(struct net_device * netdev,enum fip_mode fip_mode)2452 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode)
2453 {
2454 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2455 }
2456
2457 /**
2458 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2459 * @netdev: The net_device to be used by the allocated FCoE Controller
2460 *
2461 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2462 * in a link_down state. The allows the user an opportunity to configure
2463 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2464 *
2465 * Creating in with this routine starts the FCoE Controller in Fabric
2466 * mode. The user can change to VN2VN or another mode before enabling.
2467 */
bnx2fc_ctlr_alloc(struct net_device * netdev)2468 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2469 {
2470 return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2471 BNX2FC_CREATE_LINK_DOWN);
2472 }
2473
2474 /**
2475 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2476 *
2477 * @cnic: Pointer to cnic device instance
2478 *
2479 **/
bnx2fc_find_hba_for_cnic(struct cnic_dev * cnic)2480 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2481 {
2482 struct bnx2fc_hba *hba;
2483
2484 /* Called with bnx2fc_dev_lock held */
2485 list_for_each_entry(hba, &adapter_list, list) {
2486 if (hba->cnic == cnic)
2487 return hba;
2488 }
2489 return NULL;
2490 }
2491
bnx2fc_interface_lookup(struct net_device * netdev)2492 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2493 *netdev)
2494 {
2495 struct bnx2fc_interface *interface;
2496
2497 /* Called with bnx2fc_dev_lock held */
2498 list_for_each_entry(interface, &if_list, list) {
2499 if (interface->netdev == netdev)
2500 return interface;
2501 }
2502 return NULL;
2503 }
2504
bnx2fc_hba_lookup(struct net_device * phys_dev)2505 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2506 *phys_dev)
2507 {
2508 struct bnx2fc_hba *hba;
2509
2510 /* Called with bnx2fc_dev_lock held */
2511 list_for_each_entry(hba, &adapter_list, list) {
2512 if (hba->phys_dev == phys_dev)
2513 return hba;
2514 }
2515 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2516 return NULL;
2517 }
2518
2519 /**
2520 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2521 *
2522 * @dev: cnic device handle
2523 */
bnx2fc_ulp_exit(struct cnic_dev * dev)2524 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2525 {
2526 struct bnx2fc_hba *hba;
2527 struct bnx2fc_interface *interface, *tmp;
2528
2529 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2530
2531 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2532 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2533 dev->netdev->name, dev->flags);
2534 return;
2535 }
2536
2537 mutex_lock(&bnx2fc_dev_lock);
2538 hba = bnx2fc_find_hba_for_cnic(dev);
2539 if (!hba) {
2540 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2541 dev);
2542 mutex_unlock(&bnx2fc_dev_lock);
2543 return;
2544 }
2545
2546 list_del_init(&hba->list);
2547 adapter_count--;
2548
2549 list_for_each_entry_safe(interface, tmp, &if_list, list)
2550 /* destroy not called yet, move to quiesced list */
2551 if (interface->hba == hba)
2552 __bnx2fc_destroy(interface);
2553 mutex_unlock(&bnx2fc_dev_lock);
2554
2555 bnx2fc_ulp_stop(hba);
2556 /* unregister cnic device */
2557 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2558 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2559 bnx2fc_hba_destroy(hba);
2560 }
2561
bnx2fc_rport_terminate_io(struct fc_rport * rport)2562 static void bnx2fc_rport_terminate_io(struct fc_rport *rport)
2563 {
2564 /* This is a no-op */
2565 }
2566
2567 /**
2568 * bnx2fc_fcoe_reset - Resets the fcoe
2569 *
2570 * @shost: shost the reset is from
2571 *
2572 * Returns: always 0
2573 */
bnx2fc_fcoe_reset(struct Scsi_Host * shost)2574 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2575 {
2576 struct fc_lport *lport = shost_priv(shost);
2577 fc_lport_reset(lport);
2578 return 0;
2579 }
2580
2581
bnx2fc_match(struct net_device * netdev)2582 static bool bnx2fc_match(struct net_device *netdev)
2583 {
2584 struct net_device *phys_dev = netdev;
2585
2586 mutex_lock(&bnx2fc_dev_lock);
2587 if (is_vlan_dev(netdev))
2588 phys_dev = vlan_dev_real_dev(netdev);
2589
2590 if (bnx2fc_hba_lookup(phys_dev)) {
2591 mutex_unlock(&bnx2fc_dev_lock);
2592 return true;
2593 }
2594
2595 mutex_unlock(&bnx2fc_dev_lock);
2596 return false;
2597 }
2598
2599
2600 static struct fcoe_transport bnx2fc_transport = {
2601 .name = {"bnx2fc"},
2602 .attached = false,
2603 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2604 .alloc = bnx2fc_ctlr_alloc,
2605 .match = bnx2fc_match,
2606 .create = bnx2fc_create,
2607 .destroy = bnx2fc_destroy,
2608 .enable = bnx2fc_enable,
2609 .disable = bnx2fc_disable,
2610 };
2611
2612 /**
2613 * bnx2fc_cpu_online - Create a receive thread for an online CPU
2614 *
2615 * @cpu: cpu index for the online cpu
2616 */
bnx2fc_cpu_online(unsigned int cpu)2617 static int bnx2fc_cpu_online(unsigned int cpu)
2618 {
2619 struct bnx2fc_percpu_s *p;
2620 struct task_struct *thread;
2621
2622 p = &per_cpu(bnx2fc_percpu, cpu);
2623
2624 thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2625 (void *)p, cpu_to_node(cpu),
2626 "bnx2fc_thread/%d", cpu);
2627 if (IS_ERR(thread))
2628 return PTR_ERR(thread);
2629
2630 /* bind thread to the cpu */
2631 kthread_bind(thread, cpu);
2632 p->iothread = thread;
2633 wake_up_process(thread);
2634 return 0;
2635 }
2636
bnx2fc_cpu_offline(unsigned int cpu)2637 static int bnx2fc_cpu_offline(unsigned int cpu)
2638 {
2639 struct bnx2fc_percpu_s *p;
2640 struct task_struct *thread;
2641 struct bnx2fc_work *work, *tmp;
2642
2643 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2644
2645 /* Prevent any new work from being queued for this CPU */
2646 p = &per_cpu(bnx2fc_percpu, cpu);
2647 spin_lock_bh(&p->fp_work_lock);
2648 thread = p->iothread;
2649 p->iothread = NULL;
2650
2651 /* Free all work in the list */
2652 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2653 list_del_init(&work->list);
2654 bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data,
2655 work->num_rq, work->task);
2656 kfree(work);
2657 }
2658
2659 spin_unlock_bh(&p->fp_work_lock);
2660
2661 if (thread)
2662 kthread_stop(thread);
2663 return 0;
2664 }
2665
bnx2fc_slave_configure(struct scsi_device * sdev)2666 static int bnx2fc_slave_configure(struct scsi_device *sdev)
2667 {
2668 if (!bnx2fc_queue_depth)
2669 return 0;
2670
2671 scsi_change_queue_depth(sdev, bnx2fc_queue_depth);
2672 return 0;
2673 }
2674
2675 static enum cpuhp_state bnx2fc_online_state;
2676
2677 /**
2678 * bnx2fc_mod_init - module init entry point
2679 *
2680 * Initialize driver wide global data structures, and register
2681 * with cnic module
2682 **/
bnx2fc_mod_init(void)2683 static int __init bnx2fc_mod_init(void)
2684 {
2685 struct fcoe_percpu_s *bg;
2686 struct task_struct *l2_thread;
2687 int rc = 0;
2688 unsigned int cpu = 0;
2689 struct bnx2fc_percpu_s *p;
2690
2691 printk(KERN_INFO PFX "%s", version);
2692
2693 /* register as a fcoe transport */
2694 rc = fcoe_transport_attach(&bnx2fc_transport);
2695 if (rc) {
2696 printk(KERN_ERR "failed to register an fcoe transport, check "
2697 "if libfcoe is loaded\n");
2698 goto out;
2699 }
2700
2701 INIT_LIST_HEAD(&adapter_list);
2702 INIT_LIST_HEAD(&if_list);
2703 mutex_init(&bnx2fc_dev_lock);
2704 adapter_count = 0;
2705
2706 /* Attach FC transport template */
2707 rc = bnx2fc_attach_transport();
2708 if (rc)
2709 goto detach_ft;
2710
2711 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2712 if (!bnx2fc_wq) {
2713 rc = -ENOMEM;
2714 goto release_bt;
2715 }
2716
2717 bg = &bnx2fc_global;
2718 skb_queue_head_init(&bg->fcoe_rx_list);
2719 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2720 (void *)bg,
2721 "bnx2fc_l2_thread");
2722 if (IS_ERR(l2_thread)) {
2723 rc = PTR_ERR(l2_thread);
2724 goto free_wq;
2725 }
2726 wake_up_process(l2_thread);
2727 spin_lock_bh(&bg->fcoe_rx_list.lock);
2728 bg->kthread = l2_thread;
2729 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2730
2731 for_each_possible_cpu(cpu) {
2732 p = &per_cpu(bnx2fc_percpu, cpu);
2733 INIT_LIST_HEAD(&p->work_list);
2734 spin_lock_init(&p->fp_work_lock);
2735 }
2736
2737 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online",
2738 bnx2fc_cpu_online, bnx2fc_cpu_offline);
2739 if (rc < 0)
2740 goto stop_thread;
2741 bnx2fc_online_state = rc;
2742
2743 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2744 return 0;
2745
2746 stop_thread:
2747 kthread_stop(l2_thread);
2748 free_wq:
2749 destroy_workqueue(bnx2fc_wq);
2750 release_bt:
2751 bnx2fc_release_transport();
2752 detach_ft:
2753 fcoe_transport_detach(&bnx2fc_transport);
2754 out:
2755 return rc;
2756 }
2757
bnx2fc_mod_exit(void)2758 static void __exit bnx2fc_mod_exit(void)
2759 {
2760 LIST_HEAD(to_be_deleted);
2761 struct bnx2fc_hba *hba, *next;
2762 struct fcoe_percpu_s *bg;
2763 struct task_struct *l2_thread;
2764 struct sk_buff *skb;
2765
2766 /*
2767 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2768 * it will have higher precedence than bnx2fc_dev_lock.
2769 * unregister_device() cannot be called with bnx2fc_dev_lock
2770 * held.
2771 */
2772 mutex_lock(&bnx2fc_dev_lock);
2773 list_splice_init(&adapter_list, &to_be_deleted);
2774 adapter_count = 0;
2775 mutex_unlock(&bnx2fc_dev_lock);
2776
2777 /* Unregister with cnic */
2778 list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2779 list_del_init(&hba->list);
2780 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2781 hba);
2782 bnx2fc_ulp_stop(hba);
2783 /* unregister cnic device */
2784 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2785 &hba->reg_with_cnic))
2786 hba->cnic->unregister_device(hba->cnic,
2787 CNIC_ULP_FCOE);
2788 bnx2fc_hba_destroy(hba);
2789 }
2790 cnic_unregister_driver(CNIC_ULP_FCOE);
2791
2792 /* Destroy global thread */
2793 bg = &bnx2fc_global;
2794 spin_lock_bh(&bg->fcoe_rx_list.lock);
2795 l2_thread = bg->kthread;
2796 bg->kthread = NULL;
2797 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2798 kfree_skb(skb);
2799
2800 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2801
2802 if (l2_thread)
2803 kthread_stop(l2_thread);
2804
2805 cpuhp_remove_state(bnx2fc_online_state);
2806
2807 destroy_workqueue(bnx2fc_wq);
2808 /*
2809 * detach from scsi transport
2810 * must happen after all destroys are done
2811 */
2812 bnx2fc_release_transport();
2813
2814 /* detach from fcoe transport */
2815 fcoe_transport_detach(&bnx2fc_transport);
2816 }
2817
2818 module_init(bnx2fc_mod_init);
2819 module_exit(bnx2fc_mod_exit);
2820
2821 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2822 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2823 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2824 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2825 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2826 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2827 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2828 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2829
2830 .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2831 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2832 };
2833
2834 static struct fc_function_template bnx2fc_transport_function = {
2835 .show_host_node_name = 1,
2836 .show_host_port_name = 1,
2837 .show_host_supported_classes = 1,
2838 .show_host_supported_fc4s = 1,
2839 .show_host_active_fc4s = 1,
2840 .show_host_maxframe_size = 1,
2841
2842 .show_host_port_id = 1,
2843 .show_host_supported_speeds = 1,
2844 .get_host_speed = fc_get_host_speed,
2845 .show_host_speed = 1,
2846 .show_host_port_type = 1,
2847 .get_host_port_state = fc_get_host_port_state,
2848 .show_host_port_state = 1,
2849 .show_host_symbolic_name = 1,
2850
2851 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2852 sizeof(struct bnx2fc_rport)),
2853 .show_rport_maxframe_size = 1,
2854 .show_rport_supported_classes = 1,
2855
2856 .show_host_fabric_name = 1,
2857 .show_starget_node_name = 1,
2858 .show_starget_port_name = 1,
2859 .show_starget_port_id = 1,
2860 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2861 .show_rport_dev_loss_tmo = 1,
2862 .get_fc_host_stats = bnx2fc_get_host_stats,
2863
2864 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2865
2866 .terminate_rport_io = bnx2fc_rport_terminate_io,
2867
2868 .vport_create = bnx2fc_vport_create,
2869 .vport_delete = bnx2fc_vport_destroy,
2870 .vport_disable = bnx2fc_vport_disable,
2871 .bsg_request = fc_lport_bsg_request,
2872 };
2873
2874 static struct fc_function_template bnx2fc_vport_xport_function = {
2875 .show_host_node_name = 1,
2876 .show_host_port_name = 1,
2877 .show_host_supported_classes = 1,
2878 .show_host_supported_fc4s = 1,
2879 .show_host_active_fc4s = 1,
2880 .show_host_maxframe_size = 1,
2881
2882 .show_host_port_id = 1,
2883 .show_host_supported_speeds = 1,
2884 .get_host_speed = fc_get_host_speed,
2885 .show_host_speed = 1,
2886 .show_host_port_type = 1,
2887 .get_host_port_state = fc_get_host_port_state,
2888 .show_host_port_state = 1,
2889 .show_host_symbolic_name = 1,
2890
2891 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2892 sizeof(struct bnx2fc_rport)),
2893 .show_rport_maxframe_size = 1,
2894 .show_rport_supported_classes = 1,
2895
2896 .show_host_fabric_name = 1,
2897 .show_starget_node_name = 1,
2898 .show_starget_port_name = 1,
2899 .show_starget_port_id = 1,
2900 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2901 .show_rport_dev_loss_tmo = 1,
2902 .get_fc_host_stats = fc_get_host_stats,
2903 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2904 .terminate_rport_io = fc_rport_terminate_io,
2905 .bsg_request = fc_lport_bsg_request,
2906 };
2907
2908 /*
2909 * Additional scsi_host attributes.
2910 */
2911 static ssize_t
bnx2fc_tm_timeout_show(struct device * dev,struct device_attribute * attr,char * buf)2912 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
2913 char *buf)
2914 {
2915 struct Scsi_Host *shost = class_to_shost(dev);
2916 struct fc_lport *lport = shost_priv(shost);
2917 struct fcoe_port *port = lport_priv(lport);
2918 struct bnx2fc_interface *interface = port->priv;
2919
2920 sprintf(buf, "%u\n", interface->tm_timeout);
2921 return strlen(buf);
2922 }
2923
2924 static ssize_t
bnx2fc_tm_timeout_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2925 bnx2fc_tm_timeout_store(struct device *dev,
2926 struct device_attribute *attr, const char *buf, size_t count)
2927 {
2928 struct Scsi_Host *shost = class_to_shost(dev);
2929 struct fc_lport *lport = shost_priv(shost);
2930 struct fcoe_port *port = lport_priv(lport);
2931 struct bnx2fc_interface *interface = port->priv;
2932 int rval, val;
2933
2934 rval = kstrtouint(buf, 10, &val);
2935 if (rval)
2936 return rval;
2937 if (val > 255)
2938 return -ERANGE;
2939
2940 interface->tm_timeout = (u8)val;
2941 return strlen(buf);
2942 }
2943
2944 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
2945 bnx2fc_tm_timeout_store);
2946
2947 static struct device_attribute *bnx2fc_host_attrs[] = {
2948 &dev_attr_tm_timeout,
2949 NULL,
2950 };
2951
2952 /*
2953 * scsi_host_template structure used while registering with SCSI-ml
2954 */
2955 static struct scsi_host_template bnx2fc_shost_template = {
2956 .module = THIS_MODULE,
2957 .name = "QLogic Offload FCoE Initiator",
2958 .queuecommand = bnx2fc_queuecommand,
2959 .eh_timed_out = fc_eh_timed_out,
2960 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2961 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2962 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2963 .eh_host_reset_handler = fc_eh_host_reset,
2964 .slave_alloc = fc_slave_alloc,
2965 .change_queue_depth = scsi_change_queue_depth,
2966 .this_id = -1,
2967 .cmd_per_lun = 3,
2968 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2969 .dma_boundary = 0x7fff,
2970 .max_sectors = 0x3fbf,
2971 .track_queue_depth = 1,
2972 .slave_configure = bnx2fc_slave_configure,
2973 .shost_attrs = bnx2fc_host_attrs,
2974 };
2975
2976 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2977 .frame_send = bnx2fc_xmit,
2978 .elsct_send = bnx2fc_elsct_send,
2979 .fcp_abort_io = bnx2fc_abort_io,
2980 .fcp_cleanup = bnx2fc_cleanup,
2981 .get_lesb = fcoe_get_lesb,
2982 .rport_event_callback = bnx2fc_rport_event_handler,
2983 };
2984
2985 /*
2986 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2987 * structure carrying callback function pointers
2988 */
2989 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2990 .owner = THIS_MODULE,
2991 .cnic_init = bnx2fc_ulp_init,
2992 .cnic_exit = bnx2fc_ulp_exit,
2993 .cnic_start = bnx2fc_ulp_start,
2994 .cnic_stop = bnx2fc_ulp_stop,
2995 .indicate_kcqes = bnx2fc_indicate_kcqe,
2996 .indicate_netevent = bnx2fc_indicate_netevent,
2997 .cnic_get_stats = bnx2fc_ulp_get_stats,
2998 };
2999