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 #include <linux/ethtool.h>
20
21 static struct list_head adapter_list;
22 static struct list_head if_list;
23 static u32 adapter_count;
24 static DEFINE_MUTEX(bnx2fc_dev_lock);
25 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
26
27 #define DRV_MODULE_NAME "bnx2fc"
28 #define DRV_MODULE_VERSION BNX2FC_VERSION
29 #define DRV_MODULE_RELDATE "October 15, 2015"
30
31
32 static char version[] =
33 "QLogic FCoE Driver " DRV_MODULE_NAME \
34 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
35
36
37 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
38 MODULE_DESCRIPTION("QLogic FCoE Driver");
39 MODULE_LICENSE("GPL");
40 MODULE_VERSION(DRV_MODULE_VERSION);
41
42 #define BNX2FC_MAX_QUEUE_DEPTH 256
43 #define BNX2FC_MIN_QUEUE_DEPTH 32
44 #define FCOE_WORD_TO_BYTE 4
45
46 static struct scsi_transport_template *bnx2fc_transport_template;
47 static struct scsi_transport_template *bnx2fc_vport_xport_template;
48
49 struct workqueue_struct *bnx2fc_wq;
50
51 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
52 * Here the io threads are per cpu but the l2 thread is just one
53 */
54 struct fcoe_percpu_s bnx2fc_global;
55 static DEFINE_SPINLOCK(bnx2fc_global_lock);
56
57 static struct cnic_ulp_ops bnx2fc_cnic_cb;
58 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
59 static struct scsi_host_template bnx2fc_shost_template;
60 static struct fc_function_template bnx2fc_transport_function;
61 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
62 static struct fc_function_template bnx2fc_vport_xport_function;
63 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode);
64 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
65 static int bnx2fc_destroy(struct net_device *net_device);
66 static int bnx2fc_enable(struct net_device *netdev);
67 static int bnx2fc_disable(struct net_device *netdev);
68
69 /* fcoe_syfs control interface handlers */
70 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
71 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
72
73 static void bnx2fc_recv_frame(struct sk_buff *skb);
74
75 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
76 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
77 static int bnx2fc_lport_config(struct fc_lport *lport);
78 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
79 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
80 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
81 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
82 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
83 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
84 struct device *parent, int npiv);
85 static void bnx2fc_port_destroy(struct fcoe_port *port);
86
87 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
88 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
89 *phys_dev);
90 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
91 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
92
93 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
94 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
95
96 static void bnx2fc_port_shutdown(struct fc_lport *lport);
97 static void bnx2fc_stop(struct bnx2fc_interface *interface);
98 static int __init bnx2fc_mod_init(void);
99 static void __exit bnx2fc_mod_exit(void);
100
101 unsigned int bnx2fc_debug_level;
102 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
103 MODULE_PARM_DESC(debug_logging,
104 "Option to enable extended logging,\n"
105 "\t\tDefault is 0 - no logging.\n"
106 "\t\t0x01 - SCSI cmd error, cleanup.\n"
107 "\t\t0x02 - Session setup, cleanup, etc.\n"
108 "\t\t0x04 - lport events, link, mtu, etc.\n"
109 "\t\t0x08 - ELS logs.\n"
110 "\t\t0x10 - fcoe L2 fame related logs.\n"
111 "\t\t0xff - LOG all messages.");
112
113 static uint bnx2fc_devloss_tmo;
114 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO);
115 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports "
116 "attached via bnx2fc.");
117
118 static uint bnx2fc_max_luns = BNX2FC_MAX_LUN;
119 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO);
120 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default "
121 "0xffff.");
122
123 static uint bnx2fc_queue_depth;
124 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO);
125 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices "
126 "attached via bnx2fc.");
127
128 static uint bnx2fc_log_fka;
129 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
130 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
131 "initiating a FIP keep alive when debug logging is enabled.");
132
bnx2fc_netdev(const struct fc_lport * lport)133 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
134 {
135 return ((struct bnx2fc_interface *)
136 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
137 }
138
bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device * fcf_dev)139 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
140 {
141 struct fcoe_ctlr_device *ctlr_dev =
142 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
143 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
144 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
145
146 fcf_dev->vlan_id = fcoe->vlan_id;
147 }
148
bnx2fc_clean_rx_queue(struct fc_lport * lp)149 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
150 {
151 struct fcoe_percpu_s *bg;
152 struct fcoe_rcv_info *fr;
153 struct sk_buff_head *list;
154 struct sk_buff *skb, *next;
155
156 bg = &bnx2fc_global;
157 spin_lock_bh(&bg->fcoe_rx_list.lock);
158 list = &bg->fcoe_rx_list;
159 skb_queue_walk_safe(list, skb, next) {
160 fr = fcoe_dev_from_skb(skb);
161 if (fr->fr_dev == lp) {
162 __skb_unlink(skb, list);
163 kfree_skb(skb);
164 }
165 }
166 spin_unlock_bh(&bg->fcoe_rx_list.lock);
167 }
168
bnx2fc_get_paged_crc_eof(struct sk_buff * skb,int tlen)169 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
170 {
171 int rc;
172 spin_lock(&bnx2fc_global_lock);
173 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
174 spin_unlock(&bnx2fc_global_lock);
175
176 return rc;
177 }
178
bnx2fc_abort_io(struct fc_lport * lport)179 static void bnx2fc_abort_io(struct fc_lport *lport)
180 {
181 /*
182 * This function is no-op for bnx2fc, but we do
183 * not want to leave it as NULL either, as libfc
184 * can call the default function which is
185 * fc_fcp_abort_io.
186 */
187 }
188
bnx2fc_cleanup(struct fc_lport * lport)189 static void bnx2fc_cleanup(struct fc_lport *lport)
190 {
191 struct fcoe_port *port = lport_priv(lport);
192 struct bnx2fc_interface *interface = port->priv;
193 struct bnx2fc_hba *hba = interface->hba;
194 struct bnx2fc_rport *tgt;
195 int i;
196
197 BNX2FC_MISC_DBG("Entered %s\n", __func__);
198 mutex_lock(&hba->hba_mutex);
199 spin_lock_bh(&hba->hba_lock);
200 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
201 tgt = hba->tgt_ofld_list[i];
202 if (tgt) {
203 /* Cleanup IOs belonging to requested vport */
204 if (tgt->port == port) {
205 spin_unlock_bh(&hba->hba_lock);
206 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
207 bnx2fc_flush_active_ios(tgt);
208 spin_lock_bh(&hba->hba_lock);
209 }
210 }
211 }
212 spin_unlock_bh(&hba->hba_lock);
213 mutex_unlock(&hba->hba_mutex);
214 }
215
bnx2fc_xmit_l2_frame(struct bnx2fc_rport * tgt,struct fc_frame * fp)216 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
217 struct fc_frame *fp)
218 {
219 struct fc_rport_priv *rdata = tgt->rdata;
220 struct fc_frame_header *fh;
221 int rc = 0;
222
223 fh = fc_frame_header_get(fp);
224 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
225 "r_ctl = 0x%x\n", rdata->ids.port_id,
226 ntohs(fh->fh_ox_id), fh->fh_r_ctl);
227 if ((fh->fh_type == FC_TYPE_ELS) &&
228 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
229
230 switch (fc_frame_payload_op(fp)) {
231 case ELS_ADISC:
232 rc = bnx2fc_send_adisc(tgt, fp);
233 break;
234 case ELS_LOGO:
235 rc = bnx2fc_send_logo(tgt, fp);
236 break;
237 case ELS_RLS:
238 rc = bnx2fc_send_rls(tgt, fp);
239 break;
240 default:
241 break;
242 }
243 } else if ((fh->fh_type == FC_TYPE_BLS) &&
244 (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
245 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
246 else {
247 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
248 "rctl 0x%x thru non-offload path\n",
249 fh->fh_type, fh->fh_r_ctl);
250 return -ENODEV;
251 }
252 if (rc)
253 return -ENOMEM;
254 else
255 return 0;
256 }
257
258 /**
259 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
260 *
261 * @lport: the associated local port
262 * @fp: the fc_frame to be transmitted
263 */
bnx2fc_xmit(struct fc_lport * lport,struct fc_frame * fp)264 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
265 {
266 struct ethhdr *eh;
267 struct fcoe_crc_eof *cp;
268 struct sk_buff *skb;
269 struct fc_frame_header *fh;
270 struct bnx2fc_interface *interface;
271 struct fcoe_ctlr *ctlr;
272 struct bnx2fc_hba *hba;
273 struct fcoe_port *port;
274 struct fcoe_hdr *hp;
275 struct bnx2fc_rport *tgt;
276 u8 sof, eof;
277 u32 crc;
278 unsigned int hlen, tlen, elen;
279 int wlen, rc = 0;
280
281 port = (struct fcoe_port *)lport_priv(lport);
282 interface = port->priv;
283 ctlr = bnx2fc_to_ctlr(interface);
284 hba = interface->hba;
285
286 fh = fc_frame_header_get(fp);
287
288 skb = fp_skb(fp);
289 if (!lport->link_up) {
290 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
291 kfree_skb(skb);
292 return 0;
293 }
294
295 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
296 if (!ctlr->sel_fcf) {
297 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
298 kfree_skb(skb);
299 return -EINVAL;
300 }
301 if (fcoe_ctlr_els_send(ctlr, lport, skb))
302 return 0;
303 }
304
305 sof = fr_sof(fp);
306 eof = fr_eof(fp);
307
308 /*
309 * Snoop the frame header to check if the frame is for
310 * an offloaded session
311 */
312 /*
313 * tgt_ofld_list access is synchronized using
314 * both hba mutex and hba lock. Atleast hba mutex or
315 * hba lock needs to be held for read access.
316 */
317
318 spin_lock_bh(&hba->hba_lock);
319 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
320 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
321 /* This frame is for offloaded session */
322 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
323 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
324 spin_unlock_bh(&hba->hba_lock);
325 rc = bnx2fc_xmit_l2_frame(tgt, fp);
326 if (rc != -ENODEV) {
327 kfree_skb(skb);
328 return rc;
329 }
330 } else {
331 spin_unlock_bh(&hba->hba_lock);
332 }
333
334 elen = sizeof(struct ethhdr);
335 hlen = sizeof(struct fcoe_hdr);
336 tlen = sizeof(struct fcoe_crc_eof);
337 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
338
339 skb->ip_summed = CHECKSUM_NONE;
340 crc = fcoe_fc_crc(fp);
341
342 /* copy port crc and eof to the skb buff */
343 if (skb_is_nonlinear(skb)) {
344 skb_frag_t *frag;
345 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
346 kfree_skb(skb);
347 return -ENOMEM;
348 }
349 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
350 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
351 } else {
352 cp = skb_put(skb, tlen);
353 }
354
355 memset(cp, 0, sizeof(*cp));
356 cp->fcoe_eof = eof;
357 cp->fcoe_crc32 = cpu_to_le32(~crc);
358 if (skb_is_nonlinear(skb)) {
359 kunmap_atomic(cp);
360 cp = NULL;
361 }
362
363 /* adjust skb network/transport offsets to match mac/fcoe/port */
364 skb_push(skb, elen + hlen);
365 skb_reset_mac_header(skb);
366 skb_reset_network_header(skb);
367 skb->mac_len = elen;
368 skb->protocol = htons(ETH_P_FCOE);
369 skb->dev = interface->netdev;
370
371 /* fill up mac and fcoe headers */
372 eh = eth_hdr(skb);
373 eh->h_proto = htons(ETH_P_FCOE);
374 if (ctlr->map_dest)
375 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
376 else
377 /* insert GW address */
378 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
379
380 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
381 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
382 else
383 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
384
385 hp = (struct fcoe_hdr *)(eh + 1);
386 memset(hp, 0, sizeof(*hp));
387 if (FC_FCOE_VER)
388 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
389 hp->fcoe_sof = sof;
390
391 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
392 if (lport->seq_offload && fr_max_payload(fp)) {
393 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
394 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
395 } else {
396 skb_shinfo(skb)->gso_type = 0;
397 skb_shinfo(skb)->gso_size = 0;
398 }
399
400 /*update tx stats */
401 this_cpu_inc(lport->stats->TxFrames);
402 this_cpu_add(lport->stats->TxWords, wlen);
403
404 /* send down to lld */
405 fr_dev(fp) = lport;
406 if (port->fcoe_pending_queue.qlen)
407 fcoe_check_wait_queue(lport, skb);
408 else if (fcoe_start_io(skb))
409 fcoe_check_wait_queue(lport, skb);
410
411 return 0;
412 }
413
414 /**
415 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
416 *
417 * @skb: the receive socket buffer
418 * @dev: associated net device
419 * @ptype: context
420 * @olddev: last device
421 *
422 * This function receives the packet and builds FC frame and passes it up
423 */
bnx2fc_rcv(struct sk_buff * skb,struct net_device * dev,struct packet_type * ptype,struct net_device * olddev)424 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
425 struct packet_type *ptype, struct net_device *olddev)
426 {
427 struct fc_lport *lport;
428 struct bnx2fc_interface *interface;
429 struct fcoe_ctlr *ctlr;
430 struct fcoe_rcv_info *fr;
431 struct fcoe_percpu_s *bg;
432 struct sk_buff *tmp_skb;
433
434 interface = container_of(ptype, struct bnx2fc_interface,
435 fcoe_packet_type);
436 ctlr = bnx2fc_to_ctlr(interface);
437 lport = ctlr->lp;
438
439 if (unlikely(lport == NULL)) {
440 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
441 goto err;
442 }
443
444 tmp_skb = skb_share_check(skb, GFP_ATOMIC);
445 if (!tmp_skb)
446 goto err;
447
448 skb = tmp_skb;
449
450 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
451 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
452 goto err;
453 }
454
455 /*
456 * Check for minimum frame length, and make sure required FCoE
457 * and FC headers are pulled into the linear data area.
458 */
459 if (unlikely((skb->len < FCOE_MIN_FRAME) ||
460 !pskb_may_pull(skb, FCOE_HEADER_LEN)))
461 goto err;
462
463 skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
464
465 fr = fcoe_dev_from_skb(skb);
466 fr->fr_dev = lport;
467
468 bg = &bnx2fc_global;
469 spin_lock(&bg->fcoe_rx_list.lock);
470
471 __skb_queue_tail(&bg->fcoe_rx_list, skb);
472 if (bg->fcoe_rx_list.qlen == 1)
473 wake_up_process(bg->kthread);
474
475 spin_unlock(&bg->fcoe_rx_list.lock);
476
477 return 0;
478 err:
479 kfree_skb(skb);
480 return -1;
481 }
482
bnx2fc_l2_rcv_thread(void * arg)483 static int bnx2fc_l2_rcv_thread(void *arg)
484 {
485 struct fcoe_percpu_s *bg = arg;
486 struct sk_buff *skb;
487
488 set_user_nice(current, MIN_NICE);
489 set_current_state(TASK_INTERRUPTIBLE);
490 while (!kthread_should_stop()) {
491 schedule();
492 spin_lock_bh(&bg->fcoe_rx_list.lock);
493 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
494 spin_unlock_bh(&bg->fcoe_rx_list.lock);
495 bnx2fc_recv_frame(skb);
496 spin_lock_bh(&bg->fcoe_rx_list.lock);
497 }
498 __set_current_state(TASK_INTERRUPTIBLE);
499 spin_unlock_bh(&bg->fcoe_rx_list.lock);
500 }
501 __set_current_state(TASK_RUNNING);
502 return 0;
503 }
504
505
bnx2fc_recv_frame(struct sk_buff * skb)506 static void bnx2fc_recv_frame(struct sk_buff *skb)
507 {
508 u64 crc_err;
509 u32 fr_len, fr_crc;
510 struct fc_lport *lport;
511 struct fcoe_rcv_info *fr;
512 struct fc_frame_header *fh;
513 struct fcoe_crc_eof crc_eof;
514 struct fc_frame *fp;
515 struct fc_lport *vn_port;
516 struct fcoe_port *port, *phys_port;
517 u8 *mac = NULL;
518 u8 *dest_mac = NULL;
519 struct fcoe_hdr *hp;
520 struct bnx2fc_interface *interface;
521 struct fcoe_ctlr *ctlr;
522
523 fr = fcoe_dev_from_skb(skb);
524 lport = fr->fr_dev;
525 if (unlikely(lport == NULL)) {
526 printk(KERN_ERR PFX "Invalid lport struct\n");
527 kfree_skb(skb);
528 return;
529 }
530
531 if (skb_is_nonlinear(skb))
532 skb_linearize(skb);
533 mac = eth_hdr(skb)->h_source;
534 dest_mac = eth_hdr(skb)->h_dest;
535
536 /* Pull the header */
537 hp = (struct fcoe_hdr *) skb_network_header(skb);
538 fh = (struct fc_frame_header *) skb_transport_header(skb);
539 skb_pull(skb, sizeof(struct fcoe_hdr));
540 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
541
542 this_cpu_inc(lport->stats->RxFrames);
543 this_cpu_add(lport->stats->RxWords, fr_len / FCOE_WORD_TO_BYTE);
544
545 fp = (struct fc_frame *)skb;
546 fc_frame_init(fp);
547 fr_dev(fp) = lport;
548 fr_sof(fp) = hp->fcoe_sof;
549 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
550 kfree_skb(skb);
551 return;
552 }
553 fr_eof(fp) = crc_eof.fcoe_eof;
554 fr_crc(fp) = crc_eof.fcoe_crc32;
555 if (pskb_trim(skb, fr_len)) {
556 kfree_skb(skb);
557 return;
558 }
559
560 phys_port = lport_priv(lport);
561 interface = phys_port->priv;
562 ctlr = bnx2fc_to_ctlr(interface);
563
564 fh = fc_frame_header_get(fp);
565
566 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
567 BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n",
568 dest_mac);
569 kfree_skb(skb);
570 return;
571 }
572
573 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
574 if (vn_port) {
575 port = lport_priv(vn_port);
576 if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
577 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
578 kfree_skb(skb);
579 return;
580 }
581 }
582 if (ctlr->state) {
583 if (!ether_addr_equal(mac, ctlr->dest_addr)) {
584 BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n",
585 mac, ctlr->dest_addr);
586 kfree_skb(skb);
587 return;
588 }
589 }
590 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
591 fh->fh_type == FC_TYPE_FCP) {
592 /* Drop FCP data. We dont this in L2 path */
593 kfree_skb(skb);
594 return;
595 }
596 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
597 fh->fh_type == FC_TYPE_ELS) {
598 switch (fc_frame_payload_op(fp)) {
599 case ELS_LOGO:
600 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
601 /* drop non-FIP LOGO */
602 kfree_skb(skb);
603 return;
604 }
605 break;
606 }
607 }
608
609 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
610 /* Drop incoming ABTS */
611 kfree_skb(skb);
612 return;
613 }
614
615 /*
616 * If the destination ID from the frame header does not match what we
617 * have on record for lport and the search for a NPIV port came up
618 * empty then this is not addressed to our port so simply drop it.
619 */
620 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
621 BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
622 lport->port_id, ntoh24(fh->fh_d_id));
623 kfree_skb(skb);
624 return;
625 }
626
627 fr_crc = le32_to_cpu(fr_crc(fp));
628
629 if (unlikely(fr_crc != ~crc32(~0, skb->data, fr_len))) {
630 crc_err = this_cpu_inc_return(lport->stats->InvalidCRCCount);
631 if (crc_err < 5)
632 printk(KERN_WARNING PFX "dropping frame with "
633 "CRC error\n");
634 kfree_skb(skb);
635 return;
636 }
637 fc_exch_recv(lport, fp);
638 }
639
640 /**
641 * bnx2fc_percpu_io_thread - thread per cpu for ios
642 *
643 * @arg: ptr to bnx2fc_percpu_info structure
644 */
bnx2fc_percpu_io_thread(void * arg)645 static int bnx2fc_percpu_io_thread(void *arg)
646 {
647 struct bnx2fc_percpu_s *p = arg;
648 struct bnx2fc_work *work, *tmp;
649 LIST_HEAD(work_list);
650
651 set_user_nice(current, MIN_NICE);
652 set_current_state(TASK_INTERRUPTIBLE);
653 while (!kthread_should_stop()) {
654 schedule();
655 spin_lock_bh(&p->fp_work_lock);
656 while (!list_empty(&p->work_list)) {
657 list_splice_init(&p->work_list, &work_list);
658 spin_unlock_bh(&p->fp_work_lock);
659
660 list_for_each_entry_safe(work, tmp, &work_list, list) {
661 list_del_init(&work->list);
662 bnx2fc_process_cq_compl(work->tgt, work->wqe,
663 work->rq_data,
664 work->num_rq,
665 work->task);
666 kfree(work);
667 }
668
669 spin_lock_bh(&p->fp_work_lock);
670 }
671 __set_current_state(TASK_INTERRUPTIBLE);
672 spin_unlock_bh(&p->fp_work_lock);
673 }
674 __set_current_state(TASK_RUNNING);
675
676 return 0;
677 }
678
bnx2fc_get_host_stats(struct Scsi_Host * shost)679 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
680 {
681 struct fc_host_statistics *bnx2fc_stats;
682 struct fc_lport *lport = shost_priv(shost);
683 struct fcoe_port *port = lport_priv(lport);
684 struct bnx2fc_interface *interface = port->priv;
685 struct bnx2fc_hba *hba = interface->hba;
686 struct fcoe_statistics_params *fw_stats;
687 int rc = 0;
688
689 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
690 if (!fw_stats)
691 return NULL;
692
693 mutex_lock(&hba->hba_stats_mutex);
694
695 bnx2fc_stats = fc_get_host_stats(shost);
696
697 init_completion(&hba->stat_req_done);
698 if (bnx2fc_send_stat_req(hba))
699 goto unlock_stats_mutex;
700 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
701 if (!rc) {
702 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
703 goto unlock_stats_mutex;
704 }
705 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
706 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
707 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
708 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
709 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
710 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
711 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
712 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
713 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
714 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
715
716 bnx2fc_stats->dumped_frames = 0;
717 bnx2fc_stats->lip_count = 0;
718 bnx2fc_stats->nos_count = 0;
719 bnx2fc_stats->loss_of_sync_count = 0;
720 bnx2fc_stats->loss_of_signal_count = 0;
721 bnx2fc_stats->prim_seq_protocol_err_count = 0;
722
723 memcpy(&hba->prev_stats, hba->stats_buffer,
724 sizeof(struct fcoe_statistics_params));
725
726 unlock_stats_mutex:
727 mutex_unlock(&hba->hba_stats_mutex);
728 return bnx2fc_stats;
729 }
730
bnx2fc_shost_config(struct fc_lport * lport,struct device * dev)731 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
732 {
733 struct fcoe_port *port = lport_priv(lport);
734 struct bnx2fc_interface *interface = port->priv;
735 struct bnx2fc_hba *hba = interface->hba;
736 struct Scsi_Host *shost = lport->host;
737 int rc = 0;
738
739 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
740 shost->max_lun = bnx2fc_max_luns;
741 shost->max_id = BNX2FC_MAX_FCP_TGT;
742 shost->max_channel = 0;
743 if (lport->vport)
744 shost->transportt = bnx2fc_vport_xport_template;
745 else
746 shost->transportt = bnx2fc_transport_template;
747
748 /* Add the new host to SCSI-ml */
749 rc = scsi_add_host(lport->host, dev);
750 if (rc) {
751 printk(KERN_ERR PFX "Error on scsi_add_host\n");
752 return rc;
753 }
754 if (!lport->vport)
755 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
756 snprintf(fc_host_symbolic_name(lport->host), 256,
757 "%s (QLogic %s) v%s over %s",
758 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
759 interface->netdev->name);
760
761 return 0;
762 }
763
bnx2fc_link_ok(struct fc_lport * lport)764 static int bnx2fc_link_ok(struct fc_lport *lport)
765 {
766 struct fcoe_port *port = lport_priv(lport);
767 struct bnx2fc_interface *interface = port->priv;
768 struct bnx2fc_hba *hba = interface->hba;
769 struct net_device *dev = hba->phys_dev;
770 int rc = 0;
771
772 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
773 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
774 else {
775 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
776 rc = -1;
777 }
778 return rc;
779 }
780
781 /**
782 * bnx2fc_get_link_state - get network link state
783 *
784 * @hba: adapter instance pointer
785 *
786 * updates adapter structure flag based on netdev state
787 */
bnx2fc_get_link_state(struct bnx2fc_hba * hba)788 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
789 {
790 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
791 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
792 else
793 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
794 }
795
bnx2fc_net_config(struct fc_lport * lport,struct net_device * netdev)796 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
797 {
798 struct bnx2fc_hba *hba;
799 struct bnx2fc_interface *interface;
800 struct fcoe_ctlr *ctlr;
801 struct fcoe_port *port;
802 u64 wwnn, wwpn;
803
804 port = lport_priv(lport);
805 interface = port->priv;
806 ctlr = bnx2fc_to_ctlr(interface);
807 hba = interface->hba;
808
809 /* require support for get_pauseparam ethtool op. */
810 if (!hba->phys_dev->ethtool_ops ||
811 !hba->phys_dev->ethtool_ops->get_pauseparam)
812 return -EOPNOTSUPP;
813
814 if (fc_set_mfs(lport, BNX2FC_MFS))
815 return -EINVAL;
816
817 skb_queue_head_init(&port->fcoe_pending_queue);
818 port->fcoe_pending_queue_active = 0;
819 timer_setup(&port->timer, fcoe_queue_timer, 0);
820
821 fcoe_link_speed_update(lport);
822
823 if (!lport->vport) {
824 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
825 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
826 1, 0);
827 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
828 fc_set_wwnn(lport, wwnn);
829
830 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
831 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
832 2, 0);
833
834 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
835 fc_set_wwpn(lport, wwpn);
836 }
837
838 return 0;
839 }
840
bnx2fc_destroy_timer(struct timer_list * t)841 static void bnx2fc_destroy_timer(struct timer_list *t)
842 {
843 struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer);
844
845 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
846 "Destroy compl not received!!\n");
847 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
848 wake_up_interruptible(&hba->destroy_wait);
849 }
850
851 /**
852 * bnx2fc_indicate_netevent - Generic netdev event handler
853 *
854 * @context: adapter structure pointer
855 * @event: event type
856 * @vlan_id: vlan id - associated vlan id with this event
857 *
858 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
859 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
860 */
bnx2fc_indicate_netevent(void * context,unsigned long event,u16 vlan_id)861 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
862 u16 vlan_id)
863 {
864 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
865 struct fcoe_ctlr_device *cdev;
866 struct fc_lport *lport;
867 struct fc_lport *vport;
868 struct bnx2fc_interface *interface, *tmp;
869 struct fcoe_ctlr *ctlr;
870 int wait_for_upload = 0;
871 u32 link_possible = 1;
872
873 if (vlan_id != 0 && event != NETDEV_UNREGISTER)
874 return;
875
876 switch (event) {
877 case NETDEV_UP:
878 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
879 printk(KERN_ERR "indicate_netevent: "\
880 "hba is not UP!!\n");
881 break;
882
883 case NETDEV_DOWN:
884 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
885 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
886 link_possible = 0;
887 break;
888
889 case NETDEV_GOING_DOWN:
890 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
891 link_possible = 0;
892 break;
893
894 case NETDEV_CHANGE:
895 break;
896
897 case NETDEV_UNREGISTER:
898 if (!vlan_id)
899 return;
900 mutex_lock(&bnx2fc_dev_lock);
901 list_for_each_entry_safe(interface, tmp, &if_list, list) {
902 if (interface->hba == hba &&
903 interface->vlan_id == (vlan_id & VLAN_VID_MASK))
904 __bnx2fc_destroy(interface);
905 }
906 mutex_unlock(&bnx2fc_dev_lock);
907 return;
908
909 default:
910 return;
911 }
912
913 mutex_lock(&bnx2fc_dev_lock);
914 list_for_each_entry(interface, &if_list, list) {
915
916 if (interface->hba != hba)
917 continue;
918
919 ctlr = bnx2fc_to_ctlr(interface);
920 lport = ctlr->lp;
921 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
922 interface->netdev->name, event);
923
924 fcoe_link_speed_update(lport);
925
926 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
927
928 if (link_possible && !bnx2fc_link_ok(lport)) {
929 switch (cdev->enabled) {
930 case FCOE_CTLR_DISABLED:
931 pr_info("Link up while interface is disabled.\n");
932 break;
933 case FCOE_CTLR_ENABLED:
934 case FCOE_CTLR_UNUSED:
935 /* Reset max recv frame size to default */
936 fc_set_mfs(lport, BNX2FC_MFS);
937 /*
938 * ctlr link up will only be handled during
939 * enable to avoid sending discovery
940 * solicitation on a stale vlan
941 */
942 if (interface->enabled)
943 fcoe_ctlr_link_up(ctlr);
944 }
945 } else if (fcoe_ctlr_link_down(ctlr)) {
946 switch (cdev->enabled) {
947 case FCOE_CTLR_DISABLED:
948 pr_info("Link down while interface is disabled.\n");
949 break;
950 case FCOE_CTLR_ENABLED:
951 case FCOE_CTLR_UNUSED:
952 mutex_lock(&lport->lp_mutex);
953 list_for_each_entry(vport, &lport->vports, list)
954 fc_host_port_type(vport->host) =
955 FC_PORTTYPE_UNKNOWN;
956 mutex_unlock(&lport->lp_mutex);
957 fc_host_port_type(lport->host) =
958 FC_PORTTYPE_UNKNOWN;
959 this_cpu_inc(lport->stats->LinkFailureCount);
960 fcoe_clean_pending_queue(lport);
961 wait_for_upload = 1;
962 }
963 }
964 }
965 mutex_unlock(&bnx2fc_dev_lock);
966
967 if (wait_for_upload) {
968 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
969 init_waitqueue_head(&hba->shutdown_wait);
970 BNX2FC_MISC_DBG("indicate_netevent "
971 "num_ofld_sess = %d\n",
972 hba->num_ofld_sess);
973 hba->wait_for_link_down = 1;
974 wait_event_interruptible(hba->shutdown_wait,
975 (hba->num_ofld_sess == 0));
976 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
977 hba->num_ofld_sess);
978 hba->wait_for_link_down = 0;
979
980 if (signal_pending(current))
981 flush_signals(current);
982 }
983 }
984
bnx2fc_libfc_config(struct fc_lport * lport)985 static int bnx2fc_libfc_config(struct fc_lport *lport)
986 {
987
988 /* Set the function pointers set by bnx2fc driver */
989 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
990 sizeof(struct libfc_function_template));
991 fc_elsct_init(lport);
992 fc_exch_init(lport);
993 fc_disc_init(lport);
994 fc_disc_config(lport, lport);
995 return 0;
996 }
997
bnx2fc_em_config(struct fc_lport * lport,struct bnx2fc_hba * hba)998 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
999 {
1000 int fcoe_min_xid, fcoe_max_xid;
1001
1002 fcoe_min_xid = hba->max_xid + 1;
1003 if (nr_cpu_ids <= 2)
1004 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
1005 else
1006 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
1007 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
1008 fcoe_max_xid, NULL)) {
1009 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
1010 return -ENOMEM;
1011 }
1012
1013 return 0;
1014 }
1015
bnx2fc_lport_config(struct fc_lport * lport)1016 static int bnx2fc_lport_config(struct fc_lport *lport)
1017 {
1018 lport->link_up = 0;
1019 lport->qfull = 0;
1020 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
1021 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
1022 lport->e_d_tov = 2 * 1000;
1023 lport->r_a_tov = 10 * 1000;
1024
1025 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1026 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1027 lport->does_npiv = 1;
1028
1029 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1030 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1031
1032 /* alloc stats structure */
1033 if (fc_lport_init_stats(lport))
1034 return -ENOMEM;
1035
1036 /* Finish fc_lport configuration */
1037 fc_lport_config(lport);
1038
1039 return 0;
1040 }
1041
1042 /**
1043 * bnx2fc_fip_recv - handle a received FIP frame.
1044 *
1045 * @skb: the received skb
1046 * @dev: associated &net_device
1047 * @ptype: the &packet_type structure which was used to register this handler.
1048 * @orig_dev: original receive &net_device, in case @ dev is a bond.
1049 *
1050 * Returns: 0 for success
1051 */
bnx2fc_fip_recv(struct sk_buff * skb,struct net_device * dev,struct packet_type * ptype,struct net_device * orig_dev)1052 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1053 struct packet_type *ptype,
1054 struct net_device *orig_dev)
1055 {
1056 struct bnx2fc_interface *interface;
1057 struct fcoe_ctlr *ctlr;
1058 interface = container_of(ptype, struct bnx2fc_interface,
1059 fip_packet_type);
1060 ctlr = bnx2fc_to_ctlr(interface);
1061 fcoe_ctlr_recv(ctlr, skb);
1062 return 0;
1063 }
1064
1065 /**
1066 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1067 *
1068 * @lport: The local port
1069 * @addr: Location of data to copy
1070 *
1071 * Remove any previously-set unicast MAC filter.
1072 * Add secondary FCoE MAC address filter for our OUI.
1073 */
bnx2fc_update_src_mac(struct fc_lport * lport,u8 * addr)1074 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1075 {
1076 struct fcoe_port *port = lport_priv(lport);
1077
1078 memcpy(port->data_src_addr, addr, ETH_ALEN);
1079 }
1080
1081 /**
1082 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1083 *
1084 * @lport: libfc port
1085 */
bnx2fc_get_src_mac(struct fc_lport * lport)1086 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1087 {
1088 struct fcoe_port *port;
1089
1090 port = (struct fcoe_port *)lport_priv(lport);
1091 return port->data_src_addr;
1092 }
1093
1094 /**
1095 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1096 *
1097 * @fip: FCoE controller.
1098 * @skb: FIP Packet.
1099 */
bnx2fc_fip_send(struct fcoe_ctlr * fip,struct sk_buff * skb)1100 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1101 {
1102 struct fip_header *fiph;
1103 struct ethhdr *eth_hdr;
1104 u16 op;
1105 u8 sub;
1106
1107 fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
1108 eth_hdr = (struct ethhdr *)skb_mac_header(skb);
1109 op = ntohs(fiph->fip_op);
1110 sub = fiph->fip_subcode;
1111
1112 if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
1113 BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
1114 eth_hdr->h_source, eth_hdr->h_dest);
1115
1116 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1117 dev_queue_xmit(skb);
1118 }
1119
bnx2fc_vport_create(struct fc_vport * vport,bool disabled)1120 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1121 {
1122 struct Scsi_Host *shost = vport_to_shost(vport);
1123 struct fc_lport *n_port = shost_priv(shost);
1124 struct fcoe_port *port = lport_priv(n_port);
1125 struct bnx2fc_interface *interface = port->priv;
1126 struct net_device *netdev = interface->netdev;
1127 struct fc_lport *vn_port;
1128 int rc;
1129 char buf[32];
1130
1131 rc = fcoe_validate_vport_create(vport);
1132 if (rc) {
1133 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1134 printk(KERN_ERR PFX "Failed to create vport, "
1135 "WWPN (0x%s) already exists\n",
1136 buf);
1137 return rc;
1138 }
1139
1140 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1141 printk(KERN_ERR PFX "vn ports cannot be created on"
1142 "this interface\n");
1143 return -EIO;
1144 }
1145 rtnl_lock();
1146 mutex_lock(&bnx2fc_dev_lock);
1147 vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1148 mutex_unlock(&bnx2fc_dev_lock);
1149 rtnl_unlock();
1150
1151 if (!vn_port) {
1152 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1153 netdev->name);
1154 return -EIO;
1155 }
1156
1157 if (bnx2fc_devloss_tmo)
1158 fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
1159
1160 if (disabled) {
1161 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1162 } else {
1163 vn_port->boot_time = jiffies;
1164 fc_lport_init(vn_port);
1165 fc_fabric_login(vn_port);
1166 fc_vport_setlink(vn_port);
1167 }
1168 return 0;
1169 }
1170
bnx2fc_free_vport(struct bnx2fc_hba * hba,struct fc_lport * lport)1171 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1172 {
1173 struct bnx2fc_lport *blport, *tmp;
1174
1175 spin_lock_bh(&hba->hba_lock);
1176 list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1177 if (blport->lport == lport) {
1178 list_del(&blport->list);
1179 kfree(blport);
1180 }
1181 }
1182 spin_unlock_bh(&hba->hba_lock);
1183 }
1184
bnx2fc_vport_destroy(struct fc_vport * vport)1185 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1186 {
1187 struct Scsi_Host *shost = vport_to_shost(vport);
1188 struct fc_lport *n_port = shost_priv(shost);
1189 struct fc_lport *vn_port = vport->dd_data;
1190 struct fcoe_port *port = lport_priv(vn_port);
1191 struct bnx2fc_interface *interface = port->priv;
1192 struct fc_lport *v_port;
1193 bool found = false;
1194
1195 mutex_lock(&n_port->lp_mutex);
1196 list_for_each_entry(v_port, &n_port->vports, list)
1197 if (v_port->vport == vport) {
1198 found = true;
1199 break;
1200 }
1201
1202 if (!found) {
1203 mutex_unlock(&n_port->lp_mutex);
1204 return -ENOENT;
1205 }
1206 list_del(&vn_port->list);
1207 mutex_unlock(&n_port->lp_mutex);
1208 bnx2fc_free_vport(interface->hba, port->lport);
1209 bnx2fc_port_shutdown(port->lport);
1210 bnx2fc_port_destroy(port);
1211 bnx2fc_interface_put(interface);
1212 return 0;
1213 }
1214
bnx2fc_vport_disable(struct fc_vport * vport,bool disable)1215 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1216 {
1217 struct fc_lport *lport = vport->dd_data;
1218
1219 if (disable) {
1220 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1221 fc_fabric_logoff(lport);
1222 } else {
1223 lport->boot_time = jiffies;
1224 fc_fabric_login(lport);
1225 fc_vport_setlink(lport);
1226 }
1227 return 0;
1228 }
1229
1230
bnx2fc_interface_setup(struct bnx2fc_interface * interface)1231 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1232 {
1233 struct net_device *netdev = interface->netdev;
1234 struct net_device *physdev = interface->hba->phys_dev;
1235 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1236 struct netdev_hw_addr *ha;
1237 int sel_san_mac = 0;
1238
1239 /* setup Source MAC Address */
1240 rcu_read_lock();
1241 for_each_dev_addr(physdev, ha) {
1242 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1243 ha->type);
1244 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1245 ha->addr[1], ha->addr[2], ha->addr[3],
1246 ha->addr[4], ha->addr[5]);
1247
1248 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1249 (is_valid_ether_addr(ha->addr))) {
1250 memcpy(ctlr->ctl_src_addr, ha->addr,
1251 ETH_ALEN);
1252 sel_san_mac = 1;
1253 BNX2FC_MISC_DBG("Found SAN MAC\n");
1254 }
1255 }
1256 rcu_read_unlock();
1257
1258 if (!sel_san_mac)
1259 return -ENODEV;
1260
1261 interface->fip_packet_type.func = bnx2fc_fip_recv;
1262 interface->fip_packet_type.type = htons(ETH_P_FIP);
1263 interface->fip_packet_type.dev = netdev;
1264 dev_add_pack(&interface->fip_packet_type);
1265
1266 interface->fcoe_packet_type.func = bnx2fc_rcv;
1267 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1268 interface->fcoe_packet_type.dev = netdev;
1269 dev_add_pack(&interface->fcoe_packet_type);
1270
1271 return 0;
1272 }
1273
bnx2fc_attach_transport(void)1274 static int bnx2fc_attach_transport(void)
1275 {
1276 bnx2fc_transport_template =
1277 fc_attach_transport(&bnx2fc_transport_function);
1278
1279 if (bnx2fc_transport_template == NULL) {
1280 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1281 return -ENODEV;
1282 }
1283
1284 bnx2fc_vport_xport_template =
1285 fc_attach_transport(&bnx2fc_vport_xport_function);
1286 if (bnx2fc_vport_xport_template == NULL) {
1287 printk(KERN_ERR PFX
1288 "Failed to attach FC transport for vport\n");
1289 fc_release_transport(bnx2fc_transport_template);
1290 bnx2fc_transport_template = NULL;
1291 return -ENODEV;
1292 }
1293 return 0;
1294 }
bnx2fc_release_transport(void)1295 static void bnx2fc_release_transport(void)
1296 {
1297 fc_release_transport(bnx2fc_transport_template);
1298 fc_release_transport(bnx2fc_vport_xport_template);
1299 bnx2fc_transport_template = NULL;
1300 bnx2fc_vport_xport_template = NULL;
1301 }
1302
bnx2fc_interface_release(struct kref * kref)1303 static void bnx2fc_interface_release(struct kref *kref)
1304 {
1305 struct fcoe_ctlr_device *ctlr_dev;
1306 struct bnx2fc_interface *interface;
1307 struct fcoe_ctlr *ctlr;
1308 struct net_device *netdev;
1309
1310 interface = container_of(kref, struct bnx2fc_interface, kref);
1311 BNX2FC_MISC_DBG("Interface is being released\n");
1312
1313 ctlr = bnx2fc_to_ctlr(interface);
1314 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1315 netdev = interface->netdev;
1316
1317 /* tear-down FIP controller */
1318 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1319 fcoe_ctlr_destroy(ctlr);
1320
1321 fcoe_ctlr_device_delete(ctlr_dev);
1322
1323 dev_put(netdev);
1324 module_put(THIS_MODULE);
1325 }
1326
bnx2fc_interface_get(struct bnx2fc_interface * interface)1327 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1328 {
1329 kref_get(&interface->kref);
1330 }
1331
bnx2fc_interface_put(struct bnx2fc_interface * interface)1332 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1333 {
1334 kref_put(&interface->kref, bnx2fc_interface_release);
1335 }
bnx2fc_hba_destroy(struct bnx2fc_hba * hba)1336 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1337 {
1338 /* Free the command manager */
1339 if (hba->cmd_mgr) {
1340 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1341 hba->cmd_mgr = NULL;
1342 }
1343 kfree(hba->tgt_ofld_list);
1344 bnx2fc_unbind_pcidev(hba);
1345 kfree(hba);
1346 }
1347
1348 /**
1349 * bnx2fc_hba_create - create a new bnx2fc hba
1350 *
1351 * @cnic: pointer to cnic device
1352 *
1353 * Creates a new FCoE hba on the given device.
1354 *
1355 */
bnx2fc_hba_create(struct cnic_dev * cnic)1356 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1357 {
1358 struct bnx2fc_hba *hba;
1359 struct fcoe_capabilities *fcoe_cap;
1360 int rc;
1361
1362 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1363 if (!hba) {
1364 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1365 return NULL;
1366 }
1367 spin_lock_init(&hba->hba_lock);
1368 mutex_init(&hba->hba_mutex);
1369 mutex_init(&hba->hba_stats_mutex);
1370
1371 hba->cnic = cnic;
1372
1373 hba->max_tasks = cnic->max_fcoe_exchanges;
1374 hba->elstm_xids = (hba->max_tasks / 2);
1375 hba->max_outstanding_cmds = hba->elstm_xids;
1376 hba->max_xid = (hba->max_tasks - 1);
1377
1378 rc = bnx2fc_bind_pcidev(hba);
1379 if (rc) {
1380 printk(KERN_ERR PFX "create_adapter: bind error\n");
1381 goto bind_err;
1382 }
1383 hba->phys_dev = cnic->netdev;
1384 hba->next_conn_id = 0;
1385
1386 hba->tgt_ofld_list =
1387 kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *),
1388 GFP_KERNEL);
1389 if (!hba->tgt_ofld_list) {
1390 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1391 goto tgtofld_err;
1392 }
1393
1394 hba->num_ofld_sess = 0;
1395
1396 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1397 if (!hba->cmd_mgr) {
1398 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1399 goto cmgr_err;
1400 }
1401 fcoe_cap = &hba->fcoe_cap;
1402
1403 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1404 FCOE_IOS_PER_CONNECTION_SHIFT;
1405 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1406 FCOE_LOGINS_PER_PORT_SHIFT;
1407 fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1408 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1409 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1410 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1411 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1412 FCOE_TARGETS_SUPPORTED_SHIFT;
1413 fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1414 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1415 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1416
1417 init_waitqueue_head(&hba->shutdown_wait);
1418 init_waitqueue_head(&hba->destroy_wait);
1419 INIT_LIST_HEAD(&hba->vports);
1420
1421 return hba;
1422
1423 cmgr_err:
1424 kfree(hba->tgt_ofld_list);
1425 tgtofld_err:
1426 bnx2fc_unbind_pcidev(hba);
1427 bind_err:
1428 kfree(hba);
1429 return NULL;
1430 }
1431
1432 static struct bnx2fc_interface *
bnx2fc_interface_create(struct bnx2fc_hba * hba,struct net_device * netdev,enum fip_mode fip_mode)1433 bnx2fc_interface_create(struct bnx2fc_hba *hba,
1434 struct net_device *netdev,
1435 enum fip_mode fip_mode)
1436 {
1437 struct fcoe_ctlr_device *ctlr_dev;
1438 struct bnx2fc_interface *interface;
1439 struct fcoe_ctlr *ctlr;
1440 int size;
1441 int rc = 0;
1442
1443 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1444 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1445 size);
1446 if (!ctlr_dev) {
1447 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1448 return NULL;
1449 }
1450 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1451 ctlr->cdev = ctlr_dev;
1452 interface = fcoe_ctlr_priv(ctlr);
1453 dev_hold(netdev);
1454 kref_init(&interface->kref);
1455 interface->hba = hba;
1456 interface->netdev = netdev;
1457
1458 /* Initialize FIP */
1459 fcoe_ctlr_init(ctlr, fip_mode);
1460 ctlr->send = bnx2fc_fip_send;
1461 ctlr->update_mac = bnx2fc_update_src_mac;
1462 ctlr->get_src_addr = bnx2fc_get_src_mac;
1463 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1464
1465 rc = bnx2fc_interface_setup(interface);
1466 if (!rc)
1467 return interface;
1468
1469 fcoe_ctlr_destroy(ctlr);
1470 dev_put(netdev);
1471 fcoe_ctlr_device_delete(ctlr_dev);
1472 return NULL;
1473 }
1474
1475 /**
1476 * bnx2fc_if_create - Create FCoE instance on a given interface
1477 *
1478 * @interface: FCoE interface to create a local port on
1479 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1480 * @npiv: Indicates if the port is vport or not
1481 *
1482 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1483 *
1484 * Returns: Allocated fc_lport or an error pointer
1485 */
bnx2fc_if_create(struct bnx2fc_interface * interface,struct device * parent,int npiv)1486 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1487 struct device *parent, int npiv)
1488 {
1489 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1490 struct fc_lport *lport, *n_port;
1491 struct fcoe_port *port;
1492 struct Scsi_Host *shost;
1493 struct fc_vport *vport = dev_to_vport(parent);
1494 struct bnx2fc_lport *blport;
1495 struct bnx2fc_hba *hba = interface->hba;
1496 int rc = 0;
1497
1498 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1499 if (!blport) {
1500 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1501 return NULL;
1502 }
1503
1504 /* Allocate Scsi_Host structure */
1505 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1506 if (!npiv)
1507 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1508 else
1509 lport = libfc_vport_create(vport, sizeof(*port));
1510
1511 if (!lport) {
1512 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1513 goto free_blport;
1514 }
1515 shost = lport->host;
1516 port = lport_priv(lport);
1517 port->lport = lport;
1518 port->priv = interface;
1519 port->get_netdev = bnx2fc_netdev;
1520
1521 /* Configure fcoe_port */
1522 rc = bnx2fc_lport_config(lport);
1523 if (rc)
1524 goto lp_config_err;
1525
1526 if (npiv) {
1527 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1528 vport->node_name, vport->port_name);
1529 fc_set_wwnn(lport, vport->node_name);
1530 fc_set_wwpn(lport, vport->port_name);
1531 }
1532 /* Configure netdev and networking properties of the lport */
1533 rc = bnx2fc_net_config(lport, interface->netdev);
1534 if (rc) {
1535 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1536 goto lp_config_err;
1537 }
1538
1539 rc = bnx2fc_shost_config(lport, parent);
1540 if (rc) {
1541 printk(KERN_ERR PFX "Couldn't configure shost for %s\n",
1542 interface->netdev->name);
1543 goto lp_config_err;
1544 }
1545
1546 /* Initialize the libfc library */
1547 rc = bnx2fc_libfc_config(lport);
1548 if (rc) {
1549 printk(KERN_ERR PFX "Couldn't configure libfc\n");
1550 goto shost_err;
1551 }
1552 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1553
1554 if (bnx2fc_devloss_tmo)
1555 fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo;
1556
1557 /* Allocate exchange manager */
1558 if (!npiv)
1559 rc = bnx2fc_em_config(lport, hba);
1560 else {
1561 shost = vport_to_shost(vport);
1562 n_port = shost_priv(shost);
1563 rc = fc_exch_mgr_list_clone(n_port, lport);
1564 }
1565
1566 if (rc) {
1567 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1568 goto shost_err;
1569 }
1570
1571 bnx2fc_interface_get(interface);
1572
1573 spin_lock_bh(&hba->hba_lock);
1574 blport->lport = lport;
1575 list_add_tail(&blport->list, &hba->vports);
1576 spin_unlock_bh(&hba->hba_lock);
1577
1578 return lport;
1579
1580 shost_err:
1581 scsi_remove_host(shost);
1582 lp_config_err:
1583 scsi_host_put(lport->host);
1584 free_blport:
1585 kfree(blport);
1586 return NULL;
1587 }
1588
bnx2fc_net_cleanup(struct bnx2fc_interface * interface)1589 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1590 {
1591 /* Dont listen for Ethernet packets anymore */
1592 __dev_remove_pack(&interface->fcoe_packet_type);
1593 __dev_remove_pack(&interface->fip_packet_type);
1594 synchronize_net();
1595 }
1596
bnx2fc_interface_cleanup(struct bnx2fc_interface * interface)1597 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1598 {
1599 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1600 struct fc_lport *lport = ctlr->lp;
1601 struct fcoe_port *port = lport_priv(lport);
1602 struct bnx2fc_hba *hba = interface->hba;
1603
1604 /* Stop the transmit retry timer */
1605 del_timer_sync(&port->timer);
1606
1607 /* Free existing transmit skbs */
1608 fcoe_clean_pending_queue(lport);
1609
1610 bnx2fc_net_cleanup(interface);
1611
1612 bnx2fc_free_vport(hba, lport);
1613 }
1614
bnx2fc_if_destroy(struct fc_lport * lport)1615 static void bnx2fc_if_destroy(struct fc_lport *lport)
1616 {
1617
1618 /* Free queued packets for the receive thread */
1619 bnx2fc_clean_rx_queue(lport);
1620
1621 /* Detach from scsi-ml */
1622 fc_remove_host(lport->host);
1623 scsi_remove_host(lport->host);
1624
1625 /*
1626 * Note that only the physical lport will have the exchange manager.
1627 * for vports, this function is NOP
1628 */
1629 fc_exch_mgr_free(lport);
1630
1631 /* Free memory used by statistical counters */
1632 fc_lport_free_stats(lport);
1633
1634 /* Release Scsi_Host */
1635 scsi_host_put(lport->host);
1636 }
1637
__bnx2fc_destroy(struct bnx2fc_interface * interface)1638 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1639 {
1640 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1641 struct fc_lport *lport = ctlr->lp;
1642 struct fcoe_port *port = lport_priv(lport);
1643
1644 bnx2fc_interface_cleanup(interface);
1645 bnx2fc_stop(interface);
1646 list_del(&interface->list);
1647 bnx2fc_port_destroy(port);
1648 bnx2fc_interface_put(interface);
1649 }
1650
1651 /**
1652 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1653 *
1654 * @netdev: The net device that the FCoE interface is on
1655 *
1656 * Called from sysfs.
1657 *
1658 * Returns: 0 for success
1659 */
bnx2fc_destroy(struct net_device * netdev)1660 static int bnx2fc_destroy(struct net_device *netdev)
1661 {
1662 struct bnx2fc_interface *interface = NULL;
1663 struct workqueue_struct *timer_work_queue;
1664 struct fcoe_ctlr *ctlr;
1665 int rc = 0;
1666
1667 rtnl_lock();
1668 mutex_lock(&bnx2fc_dev_lock);
1669
1670 interface = bnx2fc_interface_lookup(netdev);
1671 ctlr = bnx2fc_to_ctlr(interface);
1672 if (!interface || !ctlr->lp) {
1673 rc = -ENODEV;
1674 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1675 goto netdev_err;
1676 }
1677
1678 timer_work_queue = interface->timer_work_queue;
1679 __bnx2fc_destroy(interface);
1680 destroy_workqueue(timer_work_queue);
1681
1682 netdev_err:
1683 mutex_unlock(&bnx2fc_dev_lock);
1684 rtnl_unlock();
1685 return rc;
1686 }
1687
bnx2fc_port_destroy(struct fcoe_port * port)1688 static void bnx2fc_port_destroy(struct fcoe_port *port)
1689 {
1690 struct fc_lport *lport;
1691
1692 lport = port->lport;
1693 BNX2FC_HBA_DBG(lport, "Entered %s, destroying lport %p\n", __func__, lport);
1694
1695 bnx2fc_if_destroy(lport);
1696 }
1697
bnx2fc_unbind_adapter_devices(struct bnx2fc_hba * hba)1698 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1699 {
1700 bnx2fc_free_fw_resc(hba);
1701 bnx2fc_free_task_ctx(hba);
1702 }
1703
1704 /**
1705 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1706 * pci structure
1707 *
1708 * @hba: Adapter instance
1709 */
bnx2fc_bind_adapter_devices(struct bnx2fc_hba * hba)1710 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1711 {
1712 if (bnx2fc_setup_task_ctx(hba))
1713 goto mem_err;
1714
1715 if (bnx2fc_setup_fw_resc(hba))
1716 goto mem_err;
1717
1718 return 0;
1719 mem_err:
1720 bnx2fc_unbind_adapter_devices(hba);
1721 return -ENOMEM;
1722 }
1723
bnx2fc_bind_pcidev(struct bnx2fc_hba * hba)1724 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1725 {
1726 struct cnic_dev *cnic;
1727 struct pci_dev *pdev;
1728
1729 if (!hba->cnic) {
1730 printk(KERN_ERR PFX "cnic is NULL\n");
1731 return -ENODEV;
1732 }
1733 cnic = hba->cnic;
1734 pdev = hba->pcidev = cnic->pcidev;
1735 if (!hba->pcidev)
1736 return -ENODEV;
1737
1738 switch (pdev->device) {
1739 case PCI_DEVICE_ID_NX2_57710:
1740 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1741 break;
1742 case PCI_DEVICE_ID_NX2_57711:
1743 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1744 break;
1745 case PCI_DEVICE_ID_NX2_57712:
1746 case PCI_DEVICE_ID_NX2_57712_MF:
1747 case PCI_DEVICE_ID_NX2_57712_VF:
1748 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1749 break;
1750 case PCI_DEVICE_ID_NX2_57800:
1751 case PCI_DEVICE_ID_NX2_57800_MF:
1752 case PCI_DEVICE_ID_NX2_57800_VF:
1753 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1754 break;
1755 case PCI_DEVICE_ID_NX2_57810:
1756 case PCI_DEVICE_ID_NX2_57810_MF:
1757 case PCI_DEVICE_ID_NX2_57810_VF:
1758 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1759 break;
1760 case PCI_DEVICE_ID_NX2_57840:
1761 case PCI_DEVICE_ID_NX2_57840_MF:
1762 case PCI_DEVICE_ID_NX2_57840_VF:
1763 case PCI_DEVICE_ID_NX2_57840_2_20:
1764 case PCI_DEVICE_ID_NX2_57840_4_10:
1765 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1766 break;
1767 default:
1768 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1769 break;
1770 }
1771 pci_dev_get(hba->pcidev);
1772 return 0;
1773 }
1774
bnx2fc_unbind_pcidev(struct bnx2fc_hba * hba)1775 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1776 {
1777 if (hba->pcidev) {
1778 hba->chip_num[0] = '\0';
1779 pci_dev_put(hba->pcidev);
1780 }
1781 hba->pcidev = NULL;
1782 }
1783
1784 /**
1785 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1786 *
1787 * @handle: transport handle pointing to adapter structure
1788 */
bnx2fc_ulp_get_stats(void * handle)1789 static int bnx2fc_ulp_get_stats(void *handle)
1790 {
1791 struct bnx2fc_hba *hba = handle;
1792 struct cnic_dev *cnic;
1793 struct fcoe_stats_info *stats_addr;
1794
1795 if (!hba)
1796 return -EINVAL;
1797
1798 cnic = hba->cnic;
1799 stats_addr = &cnic->stats_addr->fcoe_stat;
1800 if (!stats_addr)
1801 return -EINVAL;
1802
1803 strncpy(stats_addr->version, BNX2FC_VERSION,
1804 sizeof(stats_addr->version));
1805 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1806 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1807
1808 return 0;
1809 }
1810
1811
1812 /**
1813 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1814 *
1815 * @handle: transport handle pointing to adapter structure
1816 *
1817 * This function maps adapter structure to pcidev structure and initiates
1818 * firmware handshake to enable/initialize on-chip FCoE components.
1819 * This bnx2fc - cnic interface api callback is used after following
1820 * conditions are met -
1821 * a) underlying network interface is up (marked by event NETDEV_UP
1822 * from netdev
1823 * b) bnx2fc adatper structure is registered.
1824 */
bnx2fc_ulp_start(void * handle)1825 static void bnx2fc_ulp_start(void *handle)
1826 {
1827 struct bnx2fc_hba *hba = handle;
1828 struct bnx2fc_interface *interface;
1829 struct fcoe_ctlr *ctlr;
1830 struct fc_lport *lport;
1831
1832 mutex_lock(&bnx2fc_dev_lock);
1833
1834 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1835 bnx2fc_fw_init(hba);
1836
1837 BNX2FC_MISC_DBG("bnx2fc started.\n");
1838
1839 list_for_each_entry(interface, &if_list, list) {
1840 if (interface->hba == hba) {
1841 ctlr = bnx2fc_to_ctlr(interface);
1842 lport = ctlr->lp;
1843 /* Kick off Fabric discovery*/
1844 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1845 lport->tt.frame_send = bnx2fc_xmit;
1846 bnx2fc_start_disc(interface);
1847 }
1848 }
1849
1850 mutex_unlock(&bnx2fc_dev_lock);
1851 }
1852
bnx2fc_port_shutdown(struct fc_lport * lport)1853 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1854 {
1855 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1856 fc_fabric_logoff(lport);
1857 fc_lport_destroy(lport);
1858 }
1859
bnx2fc_stop(struct bnx2fc_interface * interface)1860 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1861 {
1862 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1863 struct fc_lport *lport;
1864 struct fc_lport *vport;
1865
1866 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1867 return;
1868
1869 lport = ctlr->lp;
1870 bnx2fc_port_shutdown(lport);
1871
1872 mutex_lock(&lport->lp_mutex);
1873 list_for_each_entry(vport, &lport->vports, list)
1874 fc_host_port_type(vport->host) =
1875 FC_PORTTYPE_UNKNOWN;
1876 mutex_unlock(&lport->lp_mutex);
1877 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1878 fcoe_ctlr_link_down(ctlr);
1879 fcoe_clean_pending_queue(lport);
1880 }
1881
bnx2fc_fw_init(struct bnx2fc_hba * hba)1882 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1883 {
1884 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1885 int rc = -1;
1886 int i = HZ;
1887
1888 rc = bnx2fc_bind_adapter_devices(hba);
1889 if (rc) {
1890 printk(KERN_ALERT PFX
1891 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1892 goto err_out;
1893 }
1894
1895 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1896 if (rc) {
1897 printk(KERN_ALERT PFX
1898 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1899 goto err_unbind;
1900 }
1901
1902 /*
1903 * Wait until the adapter init message is complete, and adapter
1904 * state is UP.
1905 */
1906 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1907 msleep(BNX2FC_INIT_POLL_TIME);
1908
1909 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1910 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1911 "Ignoring...\n",
1912 hba->cnic->netdev->name);
1913 rc = -1;
1914 goto err_unbind;
1915 }
1916
1917
1918 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1919 return 0;
1920
1921 err_unbind:
1922 bnx2fc_unbind_adapter_devices(hba);
1923 err_out:
1924 return rc;
1925 }
1926
bnx2fc_fw_destroy(struct bnx2fc_hba * hba)1927 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1928 {
1929 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1930 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1931 timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer,
1932 0);
1933 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1934 jiffies;
1935 add_timer(&hba->destroy_timer);
1936 wait_event_interruptible(hba->destroy_wait,
1937 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1938 &hba->flags));
1939 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1940 /* This should never happen */
1941 if (signal_pending(current))
1942 flush_signals(current);
1943
1944 del_timer_sync(&hba->destroy_timer);
1945 }
1946 bnx2fc_unbind_adapter_devices(hba);
1947 }
1948 }
1949
1950 /**
1951 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1952 *
1953 * @handle: transport handle pointing to adapter structure
1954 *
1955 * Driver checks if adapter is already in shutdown mode, if not start
1956 * the shutdown process.
1957 */
bnx2fc_ulp_stop(void * handle)1958 static void bnx2fc_ulp_stop(void *handle)
1959 {
1960 struct bnx2fc_hba *hba = handle;
1961 struct bnx2fc_interface *interface;
1962
1963 printk(KERN_ERR "ULP_STOP\n");
1964
1965 mutex_lock(&bnx2fc_dev_lock);
1966 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1967 goto exit;
1968 list_for_each_entry(interface, &if_list, list) {
1969 if (interface->hba == hba)
1970 bnx2fc_stop(interface);
1971 }
1972 BUG_ON(hba->num_ofld_sess != 0);
1973
1974 mutex_lock(&hba->hba_mutex);
1975 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1976 clear_bit(ADAPTER_STATE_GOING_DOWN,
1977 &hba->adapter_state);
1978
1979 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1980 mutex_unlock(&hba->hba_mutex);
1981
1982 bnx2fc_fw_destroy(hba);
1983 exit:
1984 mutex_unlock(&bnx2fc_dev_lock);
1985 }
1986
bnx2fc_start_disc(struct bnx2fc_interface * interface)1987 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1988 {
1989 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1990 struct fc_lport *lport;
1991 int wait_cnt = 0;
1992
1993 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1994 /* Kick off FIP/FLOGI */
1995 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1996 printk(KERN_ERR PFX "Init not done yet\n");
1997 return;
1998 }
1999
2000 lport = ctlr->lp;
2001 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
2002
2003 if (!bnx2fc_link_ok(lport) && interface->enabled) {
2004 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
2005 fcoe_ctlr_link_up(ctlr);
2006 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2007 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2008 }
2009
2010 /* wait for the FCF to be selected before issuing FLOGI */
2011 while (!ctlr->sel_fcf) {
2012 msleep(250);
2013 /* give up after 3 secs */
2014 if (++wait_cnt > 12)
2015 break;
2016 }
2017
2018 /* Reset max receive frame size to default */
2019 if (fc_set_mfs(lport, BNX2FC_MFS))
2020 return;
2021
2022 fc_lport_init(lport);
2023 fc_fabric_login(lport);
2024 }
2025
2026
2027 /**
2028 * bnx2fc_ulp_init - Initialize an adapter instance
2029 *
2030 * @dev : cnic device handle
2031 * Called from cnic_register_driver() context to initialize all
2032 * enumerated cnic devices. This routine allocates adapter structure
2033 * and other device specific resources.
2034 */
bnx2fc_ulp_init(struct cnic_dev * dev)2035 static void bnx2fc_ulp_init(struct cnic_dev *dev)
2036 {
2037 struct bnx2fc_hba *hba;
2038 int rc = 0;
2039
2040 BNX2FC_MISC_DBG("Entered %s\n", __func__);
2041 /* bnx2fc works only when bnx2x is loaded */
2042 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
2043 (dev->max_fcoe_conn == 0)) {
2044 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
2045 " flags: %lx fcoe_conn: %d\n",
2046 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
2047 return;
2048 }
2049
2050 hba = bnx2fc_hba_create(dev);
2051 if (!hba) {
2052 printk(KERN_ERR PFX "hba initialization failed\n");
2053 return;
2054 }
2055
2056 pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
2057
2058 /* Add HBA to the adapter list */
2059 mutex_lock(&bnx2fc_dev_lock);
2060 list_add_tail(&hba->list, &adapter_list);
2061 adapter_count++;
2062 mutex_unlock(&bnx2fc_dev_lock);
2063
2064 dev->fcoe_cap = &hba->fcoe_cap;
2065 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2066 rc = dev->register_device(dev, CNIC_ULP_FCOE,
2067 (void *) hba);
2068 if (rc)
2069 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2070 else
2071 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2072 }
2073
2074 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
__bnx2fc_disable(struct fcoe_ctlr * ctlr)2075 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2076 {
2077 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2078
2079 if (interface->enabled) {
2080 if (!ctlr->lp) {
2081 pr_err(PFX "__bnx2fc_disable: lport not found\n");
2082 return -ENODEV;
2083 } else {
2084 interface->enabled = false;
2085 fcoe_ctlr_link_down(ctlr);
2086 fcoe_clean_pending_queue(ctlr->lp);
2087 }
2088 }
2089 return 0;
2090 }
2091
2092 /*
2093 * Deperecated: Use bnx2fc_enabled()
2094 */
bnx2fc_disable(struct net_device * netdev)2095 static int bnx2fc_disable(struct net_device *netdev)
2096 {
2097 struct bnx2fc_interface *interface;
2098 struct fcoe_ctlr *ctlr;
2099 int rc = 0;
2100
2101 rtnl_lock();
2102 mutex_lock(&bnx2fc_dev_lock);
2103
2104 interface = bnx2fc_interface_lookup(netdev);
2105 ctlr = bnx2fc_to_ctlr(interface);
2106
2107 if (!interface) {
2108 rc = -ENODEV;
2109 pr_err(PFX "bnx2fc_disable: interface not found\n");
2110 } else {
2111 rc = __bnx2fc_disable(ctlr);
2112 }
2113 mutex_unlock(&bnx2fc_dev_lock);
2114 rtnl_unlock();
2115 return rc;
2116 }
2117
bnx2fc_npiv_create_vports(struct fc_lport * lport,struct cnic_fc_npiv_tbl * npiv_tbl)2118 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2119 struct cnic_fc_npiv_tbl *npiv_tbl)
2120 {
2121 struct fc_vport_identifiers vpid;
2122 uint i, created = 0;
2123 u64 wwnn = 0;
2124 char wwpn_str[32];
2125 char wwnn_str[32];
2126
2127 if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2128 BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2129 goto done;
2130 }
2131
2132 /* Sanity check the first entry to make sure it's not 0 */
2133 if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2134 wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2135 BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2136 goto done;
2137 }
2138
2139 vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2140 vpid.vport_type = FC_PORTTYPE_NPIV;
2141 vpid.disable = false;
2142
2143 for (i = 0; i < npiv_tbl->count; i++) {
2144 wwnn = wwn_to_u64(npiv_tbl->wwnn[i]);
2145 if (wwnn == 0) {
2146 /*
2147 * If we get a 0 element from for the WWNN then assume
2148 * the WWNN should be the same as the physical port.
2149 */
2150 wwnn = lport->wwnn;
2151 }
2152 vpid.node_name = wwnn;
2153 vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2154 scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2155 "NPIV[%u]:%016llx-%016llx",
2156 created, vpid.port_name, vpid.node_name);
2157 fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str));
2158 fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str));
2159 BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str,
2160 wwpn_str);
2161 if (fc_vport_create(lport->host, 0, &vpid))
2162 created++;
2163 else
2164 BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2165 }
2166 done:
2167 return created;
2168 }
2169
__bnx2fc_enable(struct fcoe_ctlr * ctlr)2170 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2171 {
2172 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2173 struct bnx2fc_hba *hba;
2174 struct cnic_fc_npiv_tbl *npiv_tbl;
2175 struct fc_lport *lport;
2176
2177 if (!interface->enabled) {
2178 if (!ctlr->lp) {
2179 pr_err(PFX "__bnx2fc_enable: lport not found\n");
2180 return -ENODEV;
2181 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2182 fcoe_ctlr_link_up(ctlr);
2183 interface->enabled = true;
2184 }
2185 }
2186
2187 /* Create static NPIV ports if any are contained in NVRAM */
2188 hba = interface->hba;
2189 lport = ctlr->lp;
2190
2191 if (!hba)
2192 goto done;
2193
2194 if (!hba->cnic)
2195 goto done;
2196
2197 if (!lport)
2198 goto done;
2199
2200 if (!lport->host)
2201 goto done;
2202
2203 if (!hba->cnic->get_fc_npiv_tbl)
2204 goto done;
2205
2206 npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2207 if (!npiv_tbl)
2208 goto done;
2209
2210 if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2211 goto done_free;
2212
2213 bnx2fc_npiv_create_vports(lport, npiv_tbl);
2214 done_free:
2215 kfree(npiv_tbl);
2216 done:
2217 return 0;
2218 }
2219
2220 /*
2221 * Deprecated: Use bnx2fc_enabled()
2222 */
bnx2fc_enable(struct net_device * netdev)2223 static int bnx2fc_enable(struct net_device *netdev)
2224 {
2225 struct bnx2fc_interface *interface;
2226 struct fcoe_ctlr *ctlr;
2227 int rc = 0;
2228
2229 rtnl_lock();
2230 mutex_lock(&bnx2fc_dev_lock);
2231
2232 interface = bnx2fc_interface_lookup(netdev);
2233 ctlr = bnx2fc_to_ctlr(interface);
2234 if (!interface) {
2235 rc = -ENODEV;
2236 pr_err(PFX "bnx2fc_enable: interface not found\n");
2237 } else {
2238 rc = __bnx2fc_enable(ctlr);
2239 }
2240
2241 mutex_unlock(&bnx2fc_dev_lock);
2242 rtnl_unlock();
2243 return rc;
2244 }
2245
2246 /**
2247 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2248 * @cdev: The FCoE Controller that is being enabled or disabled
2249 *
2250 * fcoe_sysfs will ensure that the state of 'enabled' has
2251 * changed, so no checking is necessary here. This routine simply
2252 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2253 * When those routines are removed the functionality can be merged
2254 * here.
2255 */
bnx2fc_ctlr_enabled(struct fcoe_ctlr_device * cdev)2256 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2257 {
2258 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2259
2260 switch (cdev->enabled) {
2261 case FCOE_CTLR_ENABLED:
2262 return __bnx2fc_enable(ctlr);
2263 case FCOE_CTLR_DISABLED:
2264 return __bnx2fc_disable(ctlr);
2265 case FCOE_CTLR_UNUSED:
2266 default:
2267 return -ENOTSUPP;
2268 }
2269 }
2270
2271 enum bnx2fc_create_link_state {
2272 BNX2FC_CREATE_LINK_DOWN,
2273 BNX2FC_CREATE_LINK_UP,
2274 };
2275
2276 /**
2277 * _bnx2fc_create() - Create bnx2fc FCoE interface
2278 * @netdev : The net_device object the Ethernet interface to create on
2279 * @fip_mode: The FIP mode for this creation
2280 * @link_state: The ctlr link state on creation
2281 *
2282 * Called from either the libfcoe 'create' module parameter
2283 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2284 *
2285 * libfcoe's 'create' module parameter is deprecated so some
2286 * consolidation of code can be done when that interface is
2287 * removed.
2288 *
2289 * Returns: 0 for success
2290 */
_bnx2fc_create(struct net_device * netdev,enum fip_mode fip_mode,enum bnx2fc_create_link_state link_state)2291 static int _bnx2fc_create(struct net_device *netdev,
2292 enum fip_mode fip_mode,
2293 enum bnx2fc_create_link_state link_state)
2294 {
2295 struct fcoe_ctlr_device *cdev;
2296 struct fcoe_ctlr *ctlr;
2297 struct bnx2fc_interface *interface;
2298 struct bnx2fc_hba *hba;
2299 struct net_device *phys_dev = netdev;
2300 struct fc_lport *lport;
2301 struct ethtool_drvinfo drvinfo;
2302 int rc = 0;
2303 int vlan_id = 0;
2304
2305 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2306 if (fip_mode != FIP_MODE_FABRIC) {
2307 printk(KERN_ERR "fip mode not FABRIC\n");
2308 return -EIO;
2309 }
2310
2311 rtnl_lock();
2312
2313 mutex_lock(&bnx2fc_dev_lock);
2314
2315 if (!try_module_get(THIS_MODULE)) {
2316 rc = -EINVAL;
2317 goto mod_err;
2318 }
2319
2320 /* obtain physical netdev */
2321 if (is_vlan_dev(netdev))
2322 phys_dev = vlan_dev_real_dev(netdev);
2323
2324 /* verify if the physical device is a netxtreme2 device */
2325 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2326 memset(&drvinfo, 0, sizeof(drvinfo));
2327 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2328 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2329 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2330 rc = -EINVAL;
2331 goto netdev_err;
2332 }
2333 } else {
2334 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2335 rc = -EINVAL;
2336 goto netdev_err;
2337 }
2338
2339 /* obtain interface and initialize rest of the structure */
2340 hba = bnx2fc_hba_lookup(phys_dev);
2341 if (!hba) {
2342 rc = -ENODEV;
2343 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2344 goto netdev_err;
2345 }
2346
2347 if (bnx2fc_interface_lookup(netdev)) {
2348 rc = -EEXIST;
2349 goto netdev_err;
2350 }
2351
2352 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2353 if (!interface) {
2354 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2355 rc = -ENOMEM;
2356 goto netdev_err;
2357 }
2358
2359 if (is_vlan_dev(netdev)) {
2360 vlan_id = vlan_dev_vlan_id(netdev);
2361 interface->vlan_enabled = 1;
2362 }
2363
2364 ctlr = bnx2fc_to_ctlr(interface);
2365 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2366 interface->vlan_id = vlan_id;
2367 interface->tm_timeout = BNX2FC_TM_TIMEOUT;
2368
2369 interface->timer_work_queue =
2370 create_singlethread_workqueue("bnx2fc_timer_wq");
2371 if (!interface->timer_work_queue) {
2372 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2373 rc = -EINVAL;
2374 goto ifput_err;
2375 }
2376
2377 lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2378 if (!lport) {
2379 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2380 netdev->name);
2381 rc = -EINVAL;
2382 goto if_create_err;
2383 }
2384
2385 /* Add interface to if_list */
2386 list_add_tail(&interface->list, &if_list);
2387
2388 lport->boot_time = jiffies;
2389
2390 /* Make this master N_port */
2391 ctlr->lp = lport;
2392
2393 if (link_state == BNX2FC_CREATE_LINK_UP)
2394 cdev->enabled = FCOE_CTLR_ENABLED;
2395 else
2396 cdev->enabled = FCOE_CTLR_DISABLED;
2397
2398 if (link_state == BNX2FC_CREATE_LINK_UP &&
2399 !bnx2fc_link_ok(lport)) {
2400 fcoe_ctlr_link_up(ctlr);
2401 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2402 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2403 }
2404
2405 BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2406 bnx2fc_start_disc(interface);
2407
2408 if (link_state == BNX2FC_CREATE_LINK_UP)
2409 interface->enabled = true;
2410
2411 /*
2412 * Release from kref_init in bnx2fc_interface_setup, on success
2413 * lport should be holding a reference taken in bnx2fc_if_create
2414 */
2415 bnx2fc_interface_put(interface);
2416 /* put netdev that was held while calling dev_get_by_name */
2417 mutex_unlock(&bnx2fc_dev_lock);
2418 rtnl_unlock();
2419 return 0;
2420
2421 if_create_err:
2422 destroy_workqueue(interface->timer_work_queue);
2423 ifput_err:
2424 bnx2fc_net_cleanup(interface);
2425 bnx2fc_interface_put(interface);
2426 goto mod_err;
2427 netdev_err:
2428 module_put(THIS_MODULE);
2429 mod_err:
2430 mutex_unlock(&bnx2fc_dev_lock);
2431 rtnl_unlock();
2432 return rc;
2433 }
2434
2435 /**
2436 * bnx2fc_create() - Create a bnx2fc interface
2437 * @netdev : The net_device object the Ethernet interface to create on
2438 * @fip_mode: The FIP mode for this creation
2439 *
2440 * Called from fcoe transport
2441 *
2442 * Returns: 0 for success
2443 */
bnx2fc_create(struct net_device * netdev,enum fip_mode fip_mode)2444 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode)
2445 {
2446 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2447 }
2448
2449 /**
2450 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2451 * @netdev: The net_device to be used by the allocated FCoE Controller
2452 *
2453 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2454 * in a link_down state. The allows the user an opportunity to configure
2455 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2456 *
2457 * Creating in with this routine starts the FCoE Controller in Fabric
2458 * mode. The user can change to VN2VN or another mode before enabling.
2459 */
bnx2fc_ctlr_alloc(struct net_device * netdev)2460 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2461 {
2462 return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2463 BNX2FC_CREATE_LINK_DOWN);
2464 }
2465
2466 /**
2467 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2468 *
2469 * @cnic: Pointer to cnic device instance
2470 *
2471 **/
bnx2fc_find_hba_for_cnic(struct cnic_dev * cnic)2472 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2473 {
2474 struct bnx2fc_hba *hba;
2475
2476 /* Called with bnx2fc_dev_lock held */
2477 list_for_each_entry(hba, &adapter_list, list) {
2478 if (hba->cnic == cnic)
2479 return hba;
2480 }
2481 return NULL;
2482 }
2483
bnx2fc_interface_lookup(struct net_device * netdev)2484 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2485 *netdev)
2486 {
2487 struct bnx2fc_interface *interface;
2488
2489 /* Called with bnx2fc_dev_lock held */
2490 list_for_each_entry(interface, &if_list, list) {
2491 if (interface->netdev == netdev)
2492 return interface;
2493 }
2494 return NULL;
2495 }
2496
bnx2fc_hba_lookup(struct net_device * phys_dev)2497 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2498 *phys_dev)
2499 {
2500 struct bnx2fc_hba *hba;
2501
2502 /* Called with bnx2fc_dev_lock held */
2503 list_for_each_entry(hba, &adapter_list, list) {
2504 if (hba->phys_dev == phys_dev)
2505 return hba;
2506 }
2507 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2508 return NULL;
2509 }
2510
2511 /**
2512 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2513 *
2514 * @dev: cnic device handle
2515 */
bnx2fc_ulp_exit(struct cnic_dev * dev)2516 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2517 {
2518 struct bnx2fc_hba *hba;
2519 struct bnx2fc_interface *interface, *tmp;
2520
2521 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2522
2523 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2524 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2525 dev->netdev->name, dev->flags);
2526 return;
2527 }
2528
2529 mutex_lock(&bnx2fc_dev_lock);
2530 hba = bnx2fc_find_hba_for_cnic(dev);
2531 if (!hba) {
2532 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2533 dev);
2534 mutex_unlock(&bnx2fc_dev_lock);
2535 return;
2536 }
2537
2538 list_del_init(&hba->list);
2539 adapter_count--;
2540
2541 list_for_each_entry_safe(interface, tmp, &if_list, list)
2542 /* destroy not called yet, move to quiesced list */
2543 if (interface->hba == hba)
2544 __bnx2fc_destroy(interface);
2545 mutex_unlock(&bnx2fc_dev_lock);
2546
2547 bnx2fc_ulp_stop(hba);
2548 /* unregister cnic device */
2549 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2550 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2551 bnx2fc_hba_destroy(hba);
2552 }
2553
bnx2fc_rport_terminate_io(struct fc_rport * rport)2554 static void bnx2fc_rport_terminate_io(struct fc_rport *rport)
2555 {
2556 /* This is a no-op */
2557 }
2558
2559 /**
2560 * bnx2fc_fcoe_reset - Resets the fcoe
2561 *
2562 * @shost: shost the reset is from
2563 *
2564 * Returns: always 0
2565 */
bnx2fc_fcoe_reset(struct Scsi_Host * shost)2566 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2567 {
2568 struct fc_lport *lport = shost_priv(shost);
2569 fc_lport_reset(lport);
2570 return 0;
2571 }
2572
2573
bnx2fc_match(struct net_device * netdev)2574 static bool bnx2fc_match(struct net_device *netdev)
2575 {
2576 struct net_device *phys_dev = netdev;
2577
2578 mutex_lock(&bnx2fc_dev_lock);
2579 if (is_vlan_dev(netdev))
2580 phys_dev = vlan_dev_real_dev(netdev);
2581
2582 if (bnx2fc_hba_lookup(phys_dev)) {
2583 mutex_unlock(&bnx2fc_dev_lock);
2584 return true;
2585 }
2586
2587 mutex_unlock(&bnx2fc_dev_lock);
2588 return false;
2589 }
2590
2591
2592 static struct fcoe_transport bnx2fc_transport = {
2593 .name = {"bnx2fc"},
2594 .attached = false,
2595 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2596 .alloc = bnx2fc_ctlr_alloc,
2597 .match = bnx2fc_match,
2598 .create = bnx2fc_create,
2599 .destroy = bnx2fc_destroy,
2600 .enable = bnx2fc_enable,
2601 .disable = bnx2fc_disable,
2602 };
2603
2604 /**
2605 * bnx2fc_cpu_online - Create a receive thread for an online CPU
2606 *
2607 * @cpu: cpu index for the online cpu
2608 */
bnx2fc_cpu_online(unsigned int cpu)2609 static int bnx2fc_cpu_online(unsigned int cpu)
2610 {
2611 struct bnx2fc_percpu_s *p;
2612 struct task_struct *thread;
2613
2614 p = &per_cpu(bnx2fc_percpu, cpu);
2615
2616 thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2617 (void *)p, cpu_to_node(cpu),
2618 "bnx2fc_thread/%d", cpu);
2619 if (IS_ERR(thread))
2620 return PTR_ERR(thread);
2621
2622 /* bind thread to the cpu */
2623 kthread_bind(thread, cpu);
2624 p->iothread = thread;
2625 wake_up_process(thread);
2626 return 0;
2627 }
2628
bnx2fc_cpu_offline(unsigned int cpu)2629 static int bnx2fc_cpu_offline(unsigned int cpu)
2630 {
2631 struct bnx2fc_percpu_s *p;
2632 struct task_struct *thread;
2633 struct bnx2fc_work *work, *tmp;
2634
2635 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2636
2637 /* Prevent any new work from being queued for this CPU */
2638 p = &per_cpu(bnx2fc_percpu, cpu);
2639 spin_lock_bh(&p->fp_work_lock);
2640 thread = p->iothread;
2641 p->iothread = NULL;
2642
2643 /* Free all work in the list */
2644 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2645 list_del_init(&work->list);
2646 bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data,
2647 work->num_rq, work->task);
2648 kfree(work);
2649 }
2650
2651 spin_unlock_bh(&p->fp_work_lock);
2652
2653 if (thread)
2654 kthread_stop(thread);
2655 return 0;
2656 }
2657
bnx2fc_slave_configure(struct scsi_device * sdev)2658 static int bnx2fc_slave_configure(struct scsi_device *sdev)
2659 {
2660 if (!bnx2fc_queue_depth)
2661 return 0;
2662
2663 scsi_change_queue_depth(sdev, bnx2fc_queue_depth);
2664 return 0;
2665 }
2666
2667 static enum cpuhp_state bnx2fc_online_state;
2668
2669 /**
2670 * bnx2fc_mod_init - module init entry point
2671 *
2672 * Initialize driver wide global data structures, and register
2673 * with cnic module
2674 **/
bnx2fc_mod_init(void)2675 static int __init bnx2fc_mod_init(void)
2676 {
2677 struct fcoe_percpu_s *bg;
2678 struct task_struct *l2_thread;
2679 int rc = 0;
2680 unsigned int cpu = 0;
2681 struct bnx2fc_percpu_s *p;
2682
2683 printk(KERN_INFO PFX "%s", version);
2684
2685 /* register as a fcoe transport */
2686 rc = fcoe_transport_attach(&bnx2fc_transport);
2687 if (rc) {
2688 printk(KERN_ERR "failed to register an fcoe transport, check "
2689 "if libfcoe is loaded\n");
2690 goto out;
2691 }
2692
2693 INIT_LIST_HEAD(&adapter_list);
2694 INIT_LIST_HEAD(&if_list);
2695 mutex_init(&bnx2fc_dev_lock);
2696 adapter_count = 0;
2697
2698 /* Attach FC transport template */
2699 rc = bnx2fc_attach_transport();
2700 if (rc)
2701 goto detach_ft;
2702
2703 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2704 if (!bnx2fc_wq) {
2705 rc = -ENOMEM;
2706 goto release_bt;
2707 }
2708
2709 bg = &bnx2fc_global;
2710 skb_queue_head_init(&bg->fcoe_rx_list);
2711 l2_thread = kthread_run(bnx2fc_l2_rcv_thread,
2712 (void *)bg,
2713 "bnx2fc_l2_thread");
2714 if (IS_ERR(l2_thread)) {
2715 rc = PTR_ERR(l2_thread);
2716 goto free_wq;
2717 }
2718 spin_lock_bh(&bg->fcoe_rx_list.lock);
2719 bg->kthread = l2_thread;
2720 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2721
2722 for_each_possible_cpu(cpu) {
2723 p = &per_cpu(bnx2fc_percpu, cpu);
2724 INIT_LIST_HEAD(&p->work_list);
2725 spin_lock_init(&p->fp_work_lock);
2726 }
2727
2728 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online",
2729 bnx2fc_cpu_online, bnx2fc_cpu_offline);
2730 if (rc < 0)
2731 goto stop_thread;
2732 bnx2fc_online_state = rc;
2733
2734 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2735 return 0;
2736
2737 stop_thread:
2738 kthread_stop(l2_thread);
2739 free_wq:
2740 destroy_workqueue(bnx2fc_wq);
2741 release_bt:
2742 bnx2fc_release_transport();
2743 detach_ft:
2744 fcoe_transport_detach(&bnx2fc_transport);
2745 out:
2746 return rc;
2747 }
2748
bnx2fc_mod_exit(void)2749 static void __exit bnx2fc_mod_exit(void)
2750 {
2751 LIST_HEAD(to_be_deleted);
2752 struct bnx2fc_hba *hba, *next;
2753 struct fcoe_percpu_s *bg;
2754 struct task_struct *l2_thread;
2755 struct sk_buff *skb;
2756
2757 /*
2758 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2759 * it will have higher precedence than bnx2fc_dev_lock.
2760 * unregister_device() cannot be called with bnx2fc_dev_lock
2761 * held.
2762 */
2763 mutex_lock(&bnx2fc_dev_lock);
2764 list_splice_init(&adapter_list, &to_be_deleted);
2765 adapter_count = 0;
2766 mutex_unlock(&bnx2fc_dev_lock);
2767
2768 /* Unregister with cnic */
2769 list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2770 list_del_init(&hba->list);
2771 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2772 hba);
2773 bnx2fc_ulp_stop(hba);
2774 /* unregister cnic device */
2775 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2776 &hba->reg_with_cnic))
2777 hba->cnic->unregister_device(hba->cnic,
2778 CNIC_ULP_FCOE);
2779 bnx2fc_hba_destroy(hba);
2780 }
2781 cnic_unregister_driver(CNIC_ULP_FCOE);
2782
2783 /* Destroy global thread */
2784 bg = &bnx2fc_global;
2785 spin_lock_bh(&bg->fcoe_rx_list.lock);
2786 l2_thread = bg->kthread;
2787 bg->kthread = NULL;
2788 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2789 kfree_skb(skb);
2790
2791 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2792
2793 if (l2_thread)
2794 kthread_stop(l2_thread);
2795
2796 cpuhp_remove_state(bnx2fc_online_state);
2797
2798 destroy_workqueue(bnx2fc_wq);
2799 /*
2800 * detach from scsi transport
2801 * must happen after all destroys are done
2802 */
2803 bnx2fc_release_transport();
2804
2805 /* detach from fcoe transport */
2806 fcoe_transport_detach(&bnx2fc_transport);
2807 }
2808
2809 module_init(bnx2fc_mod_init);
2810 module_exit(bnx2fc_mod_exit);
2811
2812 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2813 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2814 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2815 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2816 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2817 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2818 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2819 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2820
2821 .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2822 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2823 };
2824
2825 static struct fc_function_template bnx2fc_transport_function = {
2826 .show_host_node_name = 1,
2827 .show_host_port_name = 1,
2828 .show_host_supported_classes = 1,
2829 .show_host_supported_fc4s = 1,
2830 .show_host_active_fc4s = 1,
2831 .show_host_maxframe_size = 1,
2832
2833 .show_host_port_id = 1,
2834 .show_host_supported_speeds = 1,
2835 .get_host_speed = fc_get_host_speed,
2836 .show_host_speed = 1,
2837 .show_host_port_type = 1,
2838 .get_host_port_state = fc_get_host_port_state,
2839 .show_host_port_state = 1,
2840 .show_host_symbolic_name = 1,
2841
2842 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2843 sizeof(struct bnx2fc_rport)),
2844 .show_rport_maxframe_size = 1,
2845 .show_rport_supported_classes = 1,
2846
2847 .show_host_fabric_name = 1,
2848 .show_starget_node_name = 1,
2849 .show_starget_port_name = 1,
2850 .show_starget_port_id = 1,
2851 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2852 .show_rport_dev_loss_tmo = 1,
2853 .get_fc_host_stats = bnx2fc_get_host_stats,
2854
2855 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2856
2857 .terminate_rport_io = bnx2fc_rport_terminate_io,
2858
2859 .vport_create = bnx2fc_vport_create,
2860 .vport_delete = bnx2fc_vport_destroy,
2861 .vport_disable = bnx2fc_vport_disable,
2862 .bsg_request = fc_lport_bsg_request,
2863 };
2864
2865 static struct fc_function_template bnx2fc_vport_xport_function = {
2866 .show_host_node_name = 1,
2867 .show_host_port_name = 1,
2868 .show_host_supported_classes = 1,
2869 .show_host_supported_fc4s = 1,
2870 .show_host_active_fc4s = 1,
2871 .show_host_maxframe_size = 1,
2872
2873 .show_host_port_id = 1,
2874 .show_host_supported_speeds = 1,
2875 .get_host_speed = fc_get_host_speed,
2876 .show_host_speed = 1,
2877 .show_host_port_type = 1,
2878 .get_host_port_state = fc_get_host_port_state,
2879 .show_host_port_state = 1,
2880 .show_host_symbolic_name = 1,
2881
2882 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2883 sizeof(struct bnx2fc_rport)),
2884 .show_rport_maxframe_size = 1,
2885 .show_rport_supported_classes = 1,
2886
2887 .show_host_fabric_name = 1,
2888 .show_starget_node_name = 1,
2889 .show_starget_port_name = 1,
2890 .show_starget_port_id = 1,
2891 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2892 .show_rport_dev_loss_tmo = 1,
2893 .get_fc_host_stats = fc_get_host_stats,
2894 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2895 .terminate_rport_io = fc_rport_terminate_io,
2896 .bsg_request = fc_lport_bsg_request,
2897 };
2898
2899 /*
2900 * Additional scsi_host attributes.
2901 */
2902 static ssize_t
bnx2fc_tm_timeout_show(struct device * dev,struct device_attribute * attr,char * buf)2903 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
2904 char *buf)
2905 {
2906 struct Scsi_Host *shost = class_to_shost(dev);
2907 struct fc_lport *lport = shost_priv(shost);
2908 struct fcoe_port *port = lport_priv(lport);
2909 struct bnx2fc_interface *interface = port->priv;
2910
2911 sprintf(buf, "%u\n", interface->tm_timeout);
2912 return strlen(buf);
2913 }
2914
2915 static ssize_t
bnx2fc_tm_timeout_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2916 bnx2fc_tm_timeout_store(struct device *dev,
2917 struct device_attribute *attr, const char *buf, size_t count)
2918 {
2919 struct Scsi_Host *shost = class_to_shost(dev);
2920 struct fc_lport *lport = shost_priv(shost);
2921 struct fcoe_port *port = lport_priv(lport);
2922 struct bnx2fc_interface *interface = port->priv;
2923 int rval, val;
2924
2925 rval = kstrtouint(buf, 10, &val);
2926 if (rval)
2927 return rval;
2928 if (val > 255)
2929 return -ERANGE;
2930
2931 interface->tm_timeout = (u8)val;
2932 return strlen(buf);
2933 }
2934
2935 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
2936 bnx2fc_tm_timeout_store);
2937
2938 static struct attribute *bnx2fc_host_attrs[] = {
2939 &dev_attr_tm_timeout.attr,
2940 NULL,
2941 };
2942
2943 ATTRIBUTE_GROUPS(bnx2fc_host);
2944
2945 /*
2946 * scsi_host_template structure used while registering with SCSI-ml
2947 */
2948 static struct scsi_host_template bnx2fc_shost_template = {
2949 .module = THIS_MODULE,
2950 .name = "QLogic Offload FCoE Initiator",
2951 .queuecommand = bnx2fc_queuecommand,
2952 .eh_timed_out = fc_eh_timed_out,
2953 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2954 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2955 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2956 .eh_host_reset_handler = fc_eh_host_reset,
2957 .slave_alloc = fc_slave_alloc,
2958 .change_queue_depth = scsi_change_queue_depth,
2959 .this_id = -1,
2960 .cmd_per_lun = 3,
2961 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2962 .dma_boundary = 0x7fff,
2963 .max_sectors = 0x3fbf,
2964 .track_queue_depth = 1,
2965 .slave_configure = bnx2fc_slave_configure,
2966 .shost_groups = bnx2fc_host_groups,
2967 .cmd_size = sizeof(struct bnx2fc_priv),
2968 };
2969
2970 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2971 .frame_send = bnx2fc_xmit,
2972 .elsct_send = bnx2fc_elsct_send,
2973 .fcp_abort_io = bnx2fc_abort_io,
2974 .fcp_cleanup = bnx2fc_cleanup,
2975 .get_lesb = fcoe_get_lesb,
2976 .rport_event_callback = bnx2fc_rport_event_handler,
2977 };
2978
2979 /*
2980 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2981 * structure carrying callback function pointers
2982 */
2983 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2984 .owner = THIS_MODULE,
2985 .cnic_init = bnx2fc_ulp_init,
2986 .cnic_exit = bnx2fc_ulp_exit,
2987 .cnic_start = bnx2fc_ulp_start,
2988 .cnic_stop = bnx2fc_ulp_stop,
2989 .indicate_kcqes = bnx2fc_indicate_kcqe,
2990 .indicate_netevent = bnx2fc_indicate_netevent,
2991 .cnic_get_stats = bnx2fc_ulp_get_stats,
2992 };
2993
