1 /* bnx2fc_fcoe.c: QLogic Linux FCoE offload driver.
2  * This file contains the code that interacts with libfc, libfcoe,
3  * cnic modules to create FCoE instances, send/receive non-offloaded
4  * FIP/FCoE packets, listen to link events etc.
5  *
6  * Copyright (c) 2008-2013 Broadcom Corporation
7  * Copyright (c) 2014-2015 QLogic Corporation
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation.
12  *
13  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
14  */
15 
16 #include "bnx2fc.h"
17 
18 static struct list_head adapter_list;
19 static struct list_head if_list;
20 static u32 adapter_count;
21 static DEFINE_MUTEX(bnx2fc_dev_lock);
22 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
23 
24 #define DRV_MODULE_NAME		"bnx2fc"
25 #define DRV_MODULE_VERSION	BNX2FC_VERSION
26 #define DRV_MODULE_RELDATE	"October 15, 2015"
27 
28 
29 static char version[] =
30 		"QLogic FCoE Driver " DRV_MODULE_NAME \
31 		" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
32 
33 
34 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
35 MODULE_DESCRIPTION("QLogic FCoE Driver");
36 MODULE_LICENSE("GPL");
37 MODULE_VERSION(DRV_MODULE_VERSION);
38 
39 #define BNX2FC_MAX_QUEUE_DEPTH	256
40 #define BNX2FC_MIN_QUEUE_DEPTH	32
41 #define FCOE_WORD_TO_BYTE  4
42 
43 static struct scsi_transport_template	*bnx2fc_transport_template;
44 static struct scsi_transport_template	*bnx2fc_vport_xport_template;
45 
46 struct workqueue_struct *bnx2fc_wq;
47 
48 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
49  * Here the io threads are per cpu but the l2 thread is just one
50  */
51 struct fcoe_percpu_s bnx2fc_global;
52 DEFINE_SPINLOCK(bnx2fc_global_lock);
53 
54 static struct cnic_ulp_ops bnx2fc_cnic_cb;
55 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
56 static struct scsi_host_template bnx2fc_shost_template;
57 static struct fc_function_template bnx2fc_transport_function;
58 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
59 static struct fc_function_template bnx2fc_vport_xport_function;
60 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
61 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
62 static int bnx2fc_destroy(struct net_device *net_device);
63 static int bnx2fc_enable(struct net_device *netdev);
64 static int bnx2fc_disable(struct net_device *netdev);
65 
66 /* fcoe_syfs control interface handlers */
67 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
68 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
69 
70 static void bnx2fc_recv_frame(struct sk_buff *skb);
71 
72 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
73 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
74 static int bnx2fc_lport_config(struct fc_lport *lport);
75 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
76 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
77 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
78 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
79 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
80 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
81 				  struct device *parent, int npiv);
82 static void bnx2fc_destroy_work(struct work_struct *work);
83 
84 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
85 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
86 							*phys_dev);
87 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
88 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
89 
90 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
91 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
92 
93 static void bnx2fc_port_shutdown(struct fc_lport *lport);
94 static void bnx2fc_stop(struct bnx2fc_interface *interface);
95 static int __init bnx2fc_mod_init(void);
96 static void __exit bnx2fc_mod_exit(void);
97 
98 unsigned int bnx2fc_debug_level;
99 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
100 MODULE_PARM_DESC(debug_logging,
101 		"Option to enable extended logging,\n"
102 		"\t\tDefault is 0 - no logging.\n"
103 		"\t\t0x01 - SCSI cmd error, cleanup.\n"
104 		"\t\t0x02 - Session setup, cleanup, etc.\n"
105 		"\t\t0x04 - lport events, link, mtu, etc.\n"
106 		"\t\t0x08 - ELS logs.\n"
107 		"\t\t0x10 - fcoe L2 fame related logs.\n"
108 		"\t\t0xff - LOG all messages.");
109 
110 uint bnx2fc_devloss_tmo;
111 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO);
112 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports "
113 	"attached via bnx2fc.");
114 
115 uint bnx2fc_max_luns = BNX2FC_MAX_LUN;
116 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO);
117 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default "
118 	"0xffff.");
119 
120 uint bnx2fc_queue_depth;
121 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO);
122 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices "
123 	"attached via bnx2fc.");
124 
125 uint bnx2fc_log_fka;
126 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
127 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
128 	"initiating a FIP keep alive when debug logging is enabled.");
129 
130 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
131 			     unsigned long action, void *hcpu);
132 /* notification function for CPU hotplug events */
133 static struct notifier_block bnx2fc_cpu_notifier = {
134 	.notifier_call = bnx2fc_cpu_callback,
135 };
136 
137 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
138 {
139 	return ((struct bnx2fc_interface *)
140 		((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
141 }
142 
143 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
144 {
145 	struct fcoe_ctlr_device *ctlr_dev =
146 		fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
147 	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
148 	struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
149 
150 	fcf_dev->vlan_id = fcoe->vlan_id;
151 }
152 
153 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
154 {
155 	struct fcoe_percpu_s *bg;
156 	struct fcoe_rcv_info *fr;
157 	struct sk_buff_head *list;
158 	struct sk_buff *skb, *next;
159 	struct sk_buff *head;
160 
161 	bg = &bnx2fc_global;
162 	spin_lock_bh(&bg->fcoe_rx_list.lock);
163 	list = &bg->fcoe_rx_list;
164 	head = list->next;
165 	for (skb = head; skb != (struct sk_buff *)list;
166 	     skb = next) {
167 		next = skb->next;
168 		fr = fcoe_dev_from_skb(skb);
169 		if (fr->fr_dev == lp) {
170 			__skb_unlink(skb, list);
171 			kfree_skb(skb);
172 		}
173 	}
174 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
175 }
176 
177 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
178 {
179 	int rc;
180 	spin_lock(&bnx2fc_global_lock);
181 	rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
182 	spin_unlock(&bnx2fc_global_lock);
183 
184 	return rc;
185 }
186 
187 static void bnx2fc_abort_io(struct fc_lport *lport)
188 {
189 	/*
190 	 * This function is no-op for bnx2fc, but we do
191 	 * not want to leave it as NULL either, as libfc
192 	 * can call the default function which is
193 	 * fc_fcp_abort_io.
194 	 */
195 }
196 
197 static void bnx2fc_cleanup(struct fc_lport *lport)
198 {
199 	struct fcoe_port *port = lport_priv(lport);
200 	struct bnx2fc_interface *interface = port->priv;
201 	struct bnx2fc_hba *hba = interface->hba;
202 	struct bnx2fc_rport *tgt;
203 	int i;
204 
205 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
206 	mutex_lock(&hba->hba_mutex);
207 	spin_lock_bh(&hba->hba_lock);
208 	for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
209 		tgt = hba->tgt_ofld_list[i];
210 		if (tgt) {
211 			/* Cleanup IOs belonging to requested vport */
212 			if (tgt->port == port) {
213 				spin_unlock_bh(&hba->hba_lock);
214 				BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
215 				bnx2fc_flush_active_ios(tgt);
216 				spin_lock_bh(&hba->hba_lock);
217 			}
218 		}
219 	}
220 	spin_unlock_bh(&hba->hba_lock);
221 	mutex_unlock(&hba->hba_mutex);
222 }
223 
224 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
225 			     struct fc_frame *fp)
226 {
227 	struct fc_rport_priv *rdata = tgt->rdata;
228 	struct fc_frame_header *fh;
229 	int rc = 0;
230 
231 	fh = fc_frame_header_get(fp);
232 	BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
233 			"r_ctl = 0x%x\n", rdata->ids.port_id,
234 			ntohs(fh->fh_ox_id), fh->fh_r_ctl);
235 	if ((fh->fh_type == FC_TYPE_ELS) &&
236 	    (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
237 
238 		switch (fc_frame_payload_op(fp)) {
239 		case ELS_ADISC:
240 			rc = bnx2fc_send_adisc(tgt, fp);
241 			break;
242 		case ELS_LOGO:
243 			rc = bnx2fc_send_logo(tgt, fp);
244 			break;
245 		case ELS_RLS:
246 			rc = bnx2fc_send_rls(tgt, fp);
247 			break;
248 		default:
249 			break;
250 		}
251 	} else if ((fh->fh_type ==  FC_TYPE_BLS) &&
252 	    (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
253 		BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
254 	else {
255 		BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
256 				"rctl 0x%x thru non-offload path\n",
257 				fh->fh_type, fh->fh_r_ctl);
258 		return -ENODEV;
259 	}
260 	if (rc)
261 		return -ENOMEM;
262 	else
263 		return 0;
264 }
265 
266 /**
267  * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
268  *
269  * @lport:	the associated local port
270  * @fp:	the fc_frame to be transmitted
271  */
272 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
273 {
274 	struct ethhdr		*eh;
275 	struct fcoe_crc_eof	*cp;
276 	struct sk_buff		*skb;
277 	struct fc_frame_header	*fh;
278 	struct bnx2fc_interface	*interface;
279 	struct fcoe_ctlr        *ctlr;
280 	struct bnx2fc_hba *hba;
281 	struct fcoe_port	*port;
282 	struct fcoe_hdr		*hp;
283 	struct bnx2fc_rport	*tgt;
284 	struct fc_stats		*stats;
285 	u8			sof, eof;
286 	u32			crc;
287 	unsigned int		hlen, tlen, elen;
288 	int			wlen, rc = 0;
289 
290 	port = (struct fcoe_port *)lport_priv(lport);
291 	interface = port->priv;
292 	ctlr = bnx2fc_to_ctlr(interface);
293 	hba = interface->hba;
294 
295 	fh = fc_frame_header_get(fp);
296 
297 	skb = fp_skb(fp);
298 	if (!lport->link_up) {
299 		BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
300 		kfree_skb(skb);
301 		return 0;
302 	}
303 
304 	if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
305 		if (!ctlr->sel_fcf) {
306 			BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
307 			kfree_skb(skb);
308 			return -EINVAL;
309 		}
310 		if (fcoe_ctlr_els_send(ctlr, lport, skb))
311 			return 0;
312 	}
313 
314 	sof = fr_sof(fp);
315 	eof = fr_eof(fp);
316 
317 	/*
318 	 * Snoop the frame header to check if the frame is for
319 	 * an offloaded session
320 	 */
321 	/*
322 	 * tgt_ofld_list access is synchronized using
323 	 * both hba mutex and hba lock. Atleast hba mutex or
324 	 * hba lock needs to be held for read access.
325 	 */
326 
327 	spin_lock_bh(&hba->hba_lock);
328 	tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
329 	if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
330 		/* This frame is for offloaded session */
331 		BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
332 				"port_id = 0x%x\n", ntoh24(fh->fh_d_id));
333 		spin_unlock_bh(&hba->hba_lock);
334 		rc = bnx2fc_xmit_l2_frame(tgt, fp);
335 		if (rc != -ENODEV) {
336 			kfree_skb(skb);
337 			return rc;
338 		}
339 	} else {
340 		spin_unlock_bh(&hba->hba_lock);
341 	}
342 
343 	elen = sizeof(struct ethhdr);
344 	hlen = sizeof(struct fcoe_hdr);
345 	tlen = sizeof(struct fcoe_crc_eof);
346 	wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
347 
348 	skb->ip_summed = CHECKSUM_NONE;
349 	crc = fcoe_fc_crc(fp);
350 
351 	/* copy port crc and eof to the skb buff */
352 	if (skb_is_nonlinear(skb)) {
353 		skb_frag_t *frag;
354 		if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
355 			kfree_skb(skb);
356 			return -ENOMEM;
357 		}
358 		frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
359 		cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
360 	} else {
361 		cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
362 	}
363 
364 	memset(cp, 0, sizeof(*cp));
365 	cp->fcoe_eof = eof;
366 	cp->fcoe_crc32 = cpu_to_le32(~crc);
367 	if (skb_is_nonlinear(skb)) {
368 		kunmap_atomic(cp);
369 		cp = NULL;
370 	}
371 
372 	/* adjust skb network/transport offsets to match mac/fcoe/port */
373 	skb_push(skb, elen + hlen);
374 	skb_reset_mac_header(skb);
375 	skb_reset_network_header(skb);
376 	skb->mac_len = elen;
377 	skb->protocol = htons(ETH_P_FCOE);
378 	skb->dev = interface->netdev;
379 
380 	/* fill up mac and fcoe headers */
381 	eh = eth_hdr(skb);
382 	eh->h_proto = htons(ETH_P_FCOE);
383 	if (ctlr->map_dest)
384 		fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
385 	else
386 		/* insert GW address */
387 		memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
388 
389 	if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
390 		memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
391 	else
392 		memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
393 
394 	hp = (struct fcoe_hdr *)(eh + 1);
395 	memset(hp, 0, sizeof(*hp));
396 	if (FC_FCOE_VER)
397 		FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
398 	hp->fcoe_sof = sof;
399 
400 	/* fcoe lso, mss is in max_payload which is non-zero for FCP data */
401 	if (lport->seq_offload && fr_max_payload(fp)) {
402 		skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
403 		skb_shinfo(skb)->gso_size = fr_max_payload(fp);
404 	} else {
405 		skb_shinfo(skb)->gso_type = 0;
406 		skb_shinfo(skb)->gso_size = 0;
407 	}
408 
409 	/*update tx stats */
410 	stats = per_cpu_ptr(lport->stats, get_cpu());
411 	stats->TxFrames++;
412 	stats->TxWords += wlen;
413 	put_cpu();
414 
415 	/* send down to lld */
416 	fr_dev(fp) = lport;
417 	if (port->fcoe_pending_queue.qlen)
418 		fcoe_check_wait_queue(lport, skb);
419 	else if (fcoe_start_io(skb))
420 		fcoe_check_wait_queue(lport, skb);
421 
422 	return 0;
423 }
424 
425 /**
426  * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
427  *
428  * @skb:	the receive socket buffer
429  * @dev:	associated net device
430  * @ptype:	context
431  * @olddev:	last device
432  *
433  * This function receives the packet and builds FC frame and passes it up
434  */
435 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
436 		struct packet_type *ptype, struct net_device *olddev)
437 {
438 	struct fc_lport *lport;
439 	struct bnx2fc_interface *interface;
440 	struct fcoe_ctlr *ctlr;
441 	struct fc_frame_header *fh;
442 	struct fcoe_rcv_info *fr;
443 	struct fcoe_percpu_s *bg;
444 	struct sk_buff *tmp_skb;
445 	unsigned short oxid;
446 
447 	interface = container_of(ptype, struct bnx2fc_interface,
448 				 fcoe_packet_type);
449 	ctlr = bnx2fc_to_ctlr(interface);
450 	lport = ctlr->lp;
451 
452 	if (unlikely(lport == NULL)) {
453 		printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
454 		goto err;
455 	}
456 
457 	tmp_skb = skb_share_check(skb, GFP_ATOMIC);
458 	if (!tmp_skb)
459 		goto err;
460 
461 	skb = tmp_skb;
462 
463 	if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
464 		printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
465 		goto err;
466 	}
467 
468 	/*
469 	 * Check for minimum frame length, and make sure required FCoE
470 	 * and FC headers are pulled into the linear data area.
471 	 */
472 	if (unlikely((skb->len < FCOE_MIN_FRAME) ||
473 	    !pskb_may_pull(skb, FCOE_HEADER_LEN)))
474 		goto err;
475 
476 	skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
477 	fh = (struct fc_frame_header *) skb_transport_header(skb);
478 
479 	oxid = ntohs(fh->fh_ox_id);
480 
481 	fr = fcoe_dev_from_skb(skb);
482 	fr->fr_dev = lport;
483 
484 	bg = &bnx2fc_global;
485 	spin_lock(&bg->fcoe_rx_list.lock);
486 
487 	__skb_queue_tail(&bg->fcoe_rx_list, skb);
488 	if (bg->fcoe_rx_list.qlen == 1)
489 		wake_up_process(bg->thread);
490 
491 	spin_unlock(&bg->fcoe_rx_list.lock);
492 
493 	return 0;
494 err:
495 	kfree_skb(skb);
496 	return -1;
497 }
498 
499 static int bnx2fc_l2_rcv_thread(void *arg)
500 {
501 	struct fcoe_percpu_s *bg = arg;
502 	struct sk_buff *skb;
503 
504 	set_user_nice(current, MIN_NICE);
505 	set_current_state(TASK_INTERRUPTIBLE);
506 	while (!kthread_should_stop()) {
507 		schedule();
508 		spin_lock_bh(&bg->fcoe_rx_list.lock);
509 		while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
510 			spin_unlock_bh(&bg->fcoe_rx_list.lock);
511 			bnx2fc_recv_frame(skb);
512 			spin_lock_bh(&bg->fcoe_rx_list.lock);
513 		}
514 		__set_current_state(TASK_INTERRUPTIBLE);
515 		spin_unlock_bh(&bg->fcoe_rx_list.lock);
516 	}
517 	__set_current_state(TASK_RUNNING);
518 	return 0;
519 }
520 
521 
522 static void bnx2fc_recv_frame(struct sk_buff *skb)
523 {
524 	u32 fr_len;
525 	struct fc_lport *lport;
526 	struct fcoe_rcv_info *fr;
527 	struct fc_stats *stats;
528 	struct fc_frame_header *fh;
529 	struct fcoe_crc_eof crc_eof;
530 	struct fc_frame *fp;
531 	struct fc_lport *vn_port;
532 	struct fcoe_port *port;
533 	u8 *mac = NULL;
534 	u8 *dest_mac = NULL;
535 	struct fcoe_hdr *hp;
536 
537 	fr = fcoe_dev_from_skb(skb);
538 	lport = fr->fr_dev;
539 	if (unlikely(lport == NULL)) {
540 		printk(KERN_ERR PFX "Invalid lport struct\n");
541 		kfree_skb(skb);
542 		return;
543 	}
544 
545 	if (skb_is_nonlinear(skb))
546 		skb_linearize(skb);
547 	mac = eth_hdr(skb)->h_source;
548 	dest_mac = eth_hdr(skb)->h_dest;
549 
550 	/* Pull the header */
551 	hp = (struct fcoe_hdr *) skb_network_header(skb);
552 	fh = (struct fc_frame_header *) skb_transport_header(skb);
553 	skb_pull(skb, sizeof(struct fcoe_hdr));
554 	fr_len = skb->len - sizeof(struct fcoe_crc_eof);
555 
556 	fp = (struct fc_frame *)skb;
557 	fc_frame_init(fp);
558 	fr_dev(fp) = lport;
559 	fr_sof(fp) = hp->fcoe_sof;
560 	if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
561 		kfree_skb(skb);
562 		return;
563 	}
564 	fr_eof(fp) = crc_eof.fcoe_eof;
565 	fr_crc(fp) = crc_eof.fcoe_crc32;
566 	if (pskb_trim(skb, fr_len)) {
567 		kfree_skb(skb);
568 		return;
569 	}
570 
571 	fh = fc_frame_header_get(fp);
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 (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
583 	    fh->fh_type == FC_TYPE_FCP) {
584 		/* Drop FCP data. We dont this in L2 path */
585 		kfree_skb(skb);
586 		return;
587 	}
588 	if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
589 	    fh->fh_type == FC_TYPE_ELS) {
590 		switch (fc_frame_payload_op(fp)) {
591 		case ELS_LOGO:
592 			if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
593 				/* drop non-FIP LOGO */
594 				kfree_skb(skb);
595 				return;
596 			}
597 			break;
598 		}
599 	}
600 
601 	if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
602 		/* Drop incoming ABTS */
603 		kfree_skb(skb);
604 		return;
605 	}
606 
607 	stats = per_cpu_ptr(lport->stats, smp_processor_id());
608 	stats->RxFrames++;
609 	stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
610 
611 	if (le32_to_cpu(fr_crc(fp)) !=
612 			~crc32(~0, skb->data, fr_len)) {
613 		if (stats->InvalidCRCCount < 5)
614 			printk(KERN_WARNING PFX "dropping frame with "
615 			       "CRC error\n");
616 		stats->InvalidCRCCount++;
617 		kfree_skb(skb);
618 		return;
619 	}
620 	fc_exch_recv(lport, fp);
621 }
622 
623 /**
624  * bnx2fc_percpu_io_thread - thread per cpu for ios
625  *
626  * @arg:	ptr to bnx2fc_percpu_info structure
627  */
628 int bnx2fc_percpu_io_thread(void *arg)
629 {
630 	struct bnx2fc_percpu_s *p = arg;
631 	struct bnx2fc_work *work, *tmp;
632 	LIST_HEAD(work_list);
633 
634 	set_user_nice(current, MIN_NICE);
635 	set_current_state(TASK_INTERRUPTIBLE);
636 	while (!kthread_should_stop()) {
637 		schedule();
638 		spin_lock_bh(&p->fp_work_lock);
639 		while (!list_empty(&p->work_list)) {
640 			list_splice_init(&p->work_list, &work_list);
641 			spin_unlock_bh(&p->fp_work_lock);
642 
643 			list_for_each_entry_safe(work, tmp, &work_list, list) {
644 				list_del_init(&work->list);
645 				bnx2fc_process_cq_compl(work->tgt, work->wqe);
646 				kfree(work);
647 			}
648 
649 			spin_lock_bh(&p->fp_work_lock);
650 		}
651 		__set_current_state(TASK_INTERRUPTIBLE);
652 		spin_unlock_bh(&p->fp_work_lock);
653 	}
654 	__set_current_state(TASK_RUNNING);
655 
656 	return 0;
657 }
658 
659 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
660 {
661 	struct fc_host_statistics *bnx2fc_stats;
662 	struct fc_lport *lport = shost_priv(shost);
663 	struct fcoe_port *port = lport_priv(lport);
664 	struct bnx2fc_interface *interface = port->priv;
665 	struct bnx2fc_hba *hba = interface->hba;
666 	struct fcoe_statistics_params *fw_stats;
667 	int rc = 0;
668 
669 	fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
670 	if (!fw_stats)
671 		return NULL;
672 
673 	bnx2fc_stats = fc_get_host_stats(shost);
674 
675 	init_completion(&hba->stat_req_done);
676 	if (bnx2fc_send_stat_req(hba))
677 		return bnx2fc_stats;
678 	rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
679 	if (!rc) {
680 		BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
681 		return bnx2fc_stats;
682 	}
683 	BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
684 	bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
685 	BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
686 	bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
687 	BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
688 	bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
689 	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
690 	bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
691 	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
692 	bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
693 
694 	bnx2fc_stats->dumped_frames = 0;
695 	bnx2fc_stats->lip_count = 0;
696 	bnx2fc_stats->nos_count = 0;
697 	bnx2fc_stats->loss_of_sync_count = 0;
698 	bnx2fc_stats->loss_of_signal_count = 0;
699 	bnx2fc_stats->prim_seq_protocol_err_count = 0;
700 
701 	memcpy(&hba->prev_stats, hba->stats_buffer,
702 	       sizeof(struct fcoe_statistics_params));
703 	return bnx2fc_stats;
704 }
705 
706 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
707 {
708 	struct fcoe_port *port = lport_priv(lport);
709 	struct bnx2fc_interface *interface = port->priv;
710 	struct bnx2fc_hba *hba = interface->hba;
711 	struct Scsi_Host *shost = lport->host;
712 	int rc = 0;
713 
714 	shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
715 	shost->max_lun = bnx2fc_max_luns;
716 	shost->max_id = BNX2FC_MAX_FCP_TGT;
717 	shost->max_channel = 0;
718 	if (lport->vport)
719 		shost->transportt = bnx2fc_vport_xport_template;
720 	else
721 		shost->transportt = bnx2fc_transport_template;
722 
723 	/* Add the new host to SCSI-ml */
724 	rc = scsi_add_host(lport->host, dev);
725 	if (rc) {
726 		printk(KERN_ERR PFX "Error on scsi_add_host\n");
727 		return rc;
728 	}
729 	if (!lport->vport)
730 		fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
731 	snprintf(fc_host_symbolic_name(lport->host), 256,
732 		 "%s (QLogic %s) v%s over %s",
733 		BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
734 		interface->netdev->name);
735 
736 	return 0;
737 }
738 
739 static int bnx2fc_link_ok(struct fc_lport *lport)
740 {
741 	struct fcoe_port *port = lport_priv(lport);
742 	struct bnx2fc_interface *interface = port->priv;
743 	struct bnx2fc_hba *hba = interface->hba;
744 	struct net_device *dev = hba->phys_dev;
745 	int rc = 0;
746 
747 	if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
748 		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
749 	else {
750 		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
751 		rc = -1;
752 	}
753 	return rc;
754 }
755 
756 /**
757  * bnx2fc_get_link_state - get network link state
758  *
759  * @hba:	adapter instance pointer
760  *
761  * updates adapter structure flag based on netdev state
762  */
763 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
764 {
765 	if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
766 		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
767 	else
768 		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
769 }
770 
771 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
772 {
773 	struct bnx2fc_hba *hba;
774 	struct bnx2fc_interface *interface;
775 	struct fcoe_ctlr *ctlr;
776 	struct fcoe_port *port;
777 	u64 wwnn, wwpn;
778 
779 	port = lport_priv(lport);
780 	interface = port->priv;
781 	ctlr = bnx2fc_to_ctlr(interface);
782 	hba = interface->hba;
783 
784 	/* require support for get_pauseparam ethtool op. */
785 	if (!hba->phys_dev->ethtool_ops ||
786 	    !hba->phys_dev->ethtool_ops->get_pauseparam)
787 		return -EOPNOTSUPP;
788 
789 	if (fc_set_mfs(lport, BNX2FC_MFS))
790 		return -EINVAL;
791 
792 	skb_queue_head_init(&port->fcoe_pending_queue);
793 	port->fcoe_pending_queue_active = 0;
794 	setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
795 
796 	fcoe_link_speed_update(lport);
797 
798 	if (!lport->vport) {
799 		if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
800 			wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
801 						 1, 0);
802 		BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
803 		fc_set_wwnn(lport, wwnn);
804 
805 		if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
806 			wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
807 						 2, 0);
808 
809 		BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
810 		fc_set_wwpn(lport, wwpn);
811 	}
812 
813 	return 0;
814 }
815 
816 static void bnx2fc_destroy_timer(unsigned long data)
817 {
818 	struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
819 
820 	printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
821 	       "Destroy compl not received!!\n");
822 	set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
823 	wake_up_interruptible(&hba->destroy_wait);
824 }
825 
826 /**
827  * bnx2fc_indicate_netevent - Generic netdev event handler
828  *
829  * @context:	adapter structure pointer
830  * @event:	event type
831  * @vlan_id:	vlan id - associated vlan id with this event
832  *
833  * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
834  * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
835  */
836 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
837 				     u16 vlan_id)
838 {
839 	struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
840 	struct fcoe_ctlr_device *cdev;
841 	struct fc_lport *lport;
842 	struct fc_lport *vport;
843 	struct bnx2fc_interface *interface, *tmp;
844 	struct fcoe_ctlr *ctlr;
845 	int wait_for_upload = 0;
846 	u32 link_possible = 1;
847 
848 	if (vlan_id != 0 && event != NETDEV_UNREGISTER)
849 		return;
850 
851 	switch (event) {
852 	case NETDEV_UP:
853 		if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
854 			printk(KERN_ERR "indicate_netevent: "\
855 					"hba is not UP!!\n");
856 		break;
857 
858 	case NETDEV_DOWN:
859 		clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
860 		clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
861 		link_possible = 0;
862 		break;
863 
864 	case NETDEV_GOING_DOWN:
865 		set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
866 		link_possible = 0;
867 		break;
868 
869 	case NETDEV_CHANGE:
870 		break;
871 
872 	case NETDEV_UNREGISTER:
873 		if (!vlan_id)
874 			return;
875 		mutex_lock(&bnx2fc_dev_lock);
876 		list_for_each_entry_safe(interface, tmp, &if_list, list) {
877 			if (interface->hba == hba &&
878 			    interface->vlan_id == (vlan_id & VLAN_VID_MASK))
879 				__bnx2fc_destroy(interface);
880 		}
881 		mutex_unlock(&bnx2fc_dev_lock);
882 
883 		/* Ensure ALL destroy work has been completed before return */
884 		flush_workqueue(bnx2fc_wq);
885 		return;
886 
887 	default:
888 		return;
889 	}
890 
891 	mutex_lock(&bnx2fc_dev_lock);
892 	list_for_each_entry(interface, &if_list, list) {
893 
894 		if (interface->hba != hba)
895 			continue;
896 
897 		ctlr = bnx2fc_to_ctlr(interface);
898 		lport = ctlr->lp;
899 		BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
900 				interface->netdev->name, event);
901 
902 		fcoe_link_speed_update(lport);
903 
904 		cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
905 
906 		if (link_possible && !bnx2fc_link_ok(lport)) {
907 			switch (cdev->enabled) {
908 			case FCOE_CTLR_DISABLED:
909 				pr_info("Link up while interface is disabled.\n");
910 				break;
911 			case FCOE_CTLR_ENABLED:
912 			case FCOE_CTLR_UNUSED:
913 				/* Reset max recv frame size to default */
914 				fc_set_mfs(lport, BNX2FC_MFS);
915 				/*
916 				 * ctlr link up will only be handled during
917 				 * enable to avoid sending discovery
918 				 * solicitation on a stale vlan
919 				 */
920 				if (interface->enabled)
921 					fcoe_ctlr_link_up(ctlr);
922 			};
923 		} else if (fcoe_ctlr_link_down(ctlr)) {
924 			switch (cdev->enabled) {
925 			case FCOE_CTLR_DISABLED:
926 				pr_info("Link down while interface is disabled.\n");
927 				break;
928 			case FCOE_CTLR_ENABLED:
929 			case FCOE_CTLR_UNUSED:
930 				mutex_lock(&lport->lp_mutex);
931 				list_for_each_entry(vport, &lport->vports, list)
932 					fc_host_port_type(vport->host) =
933 					FC_PORTTYPE_UNKNOWN;
934 				mutex_unlock(&lport->lp_mutex);
935 				fc_host_port_type(lport->host) =
936 					FC_PORTTYPE_UNKNOWN;
937 				per_cpu_ptr(lport->stats,
938 					    get_cpu())->LinkFailureCount++;
939 				put_cpu();
940 				fcoe_clean_pending_queue(lport);
941 				wait_for_upload = 1;
942 			};
943 		}
944 	}
945 	mutex_unlock(&bnx2fc_dev_lock);
946 
947 	if (wait_for_upload) {
948 		clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
949 		init_waitqueue_head(&hba->shutdown_wait);
950 		BNX2FC_MISC_DBG("indicate_netevent "
951 				"num_ofld_sess = %d\n",
952 				hba->num_ofld_sess);
953 		hba->wait_for_link_down = 1;
954 		wait_event_interruptible(hba->shutdown_wait,
955 					 (hba->num_ofld_sess == 0));
956 		BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
957 				hba->num_ofld_sess);
958 		hba->wait_for_link_down = 0;
959 
960 		if (signal_pending(current))
961 			flush_signals(current);
962 	}
963 }
964 
965 static int bnx2fc_libfc_config(struct fc_lport *lport)
966 {
967 
968 	/* Set the function pointers set by bnx2fc driver */
969 	memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
970 		sizeof(struct libfc_function_template));
971 	fc_elsct_init(lport);
972 	fc_exch_init(lport);
973 	fc_rport_init(lport);
974 	fc_disc_init(lport);
975 	fc_disc_config(lport, lport);
976 	return 0;
977 }
978 
979 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
980 {
981 	int fcoe_min_xid, fcoe_max_xid;
982 
983 	fcoe_min_xid = hba->max_xid + 1;
984 	if (nr_cpu_ids <= 2)
985 		fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
986 	else
987 		fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
988 	if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
989 			       fcoe_max_xid, NULL)) {
990 		printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
991 		return -ENOMEM;
992 	}
993 
994 	return 0;
995 }
996 
997 static int bnx2fc_lport_config(struct fc_lport *lport)
998 {
999 	lport->link_up = 0;
1000 	lport->qfull = 0;
1001 	lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
1002 	lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
1003 	lport->e_d_tov = 2 * 1000;
1004 	lport->r_a_tov = 10 * 1000;
1005 
1006 	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1007 				FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1008 	lport->does_npiv = 1;
1009 
1010 	memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1011 	lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1012 
1013 	/* alloc stats structure */
1014 	if (fc_lport_init_stats(lport))
1015 		return -ENOMEM;
1016 
1017 	/* Finish fc_lport configuration */
1018 	fc_lport_config(lport);
1019 
1020 	return 0;
1021 }
1022 
1023 /**
1024  * bnx2fc_fip_recv - handle a received FIP frame.
1025  *
1026  * @skb: the received skb
1027  * @dev: associated &net_device
1028  * @ptype: the &packet_type structure which was used to register this handler.
1029  * @orig_dev: original receive &net_device, in case @ dev is a bond.
1030  *
1031  * Returns: 0 for success
1032  */
1033 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1034 			   struct packet_type *ptype,
1035 			   struct net_device *orig_dev)
1036 {
1037 	struct bnx2fc_interface *interface;
1038 	struct fcoe_ctlr *ctlr;
1039 	interface = container_of(ptype, struct bnx2fc_interface,
1040 				 fip_packet_type);
1041 	ctlr = bnx2fc_to_ctlr(interface);
1042 	fcoe_ctlr_recv(ctlr, skb);
1043 	return 0;
1044 }
1045 
1046 /**
1047  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1048  *
1049  * @fip: FCoE controller.
1050  * @old: Unicast MAC address to delete if the MAC is non-zero.
1051  * @new: Unicast MAC address to add.
1052  *
1053  * Remove any previously-set unicast MAC filter.
1054  * Add secondary FCoE MAC address filter for our OUI.
1055  */
1056 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1057 {
1058 	struct fcoe_port *port = lport_priv(lport);
1059 
1060 	memcpy(port->data_src_addr, addr, ETH_ALEN);
1061 }
1062 
1063 /**
1064  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1065  *
1066  * @lport: libfc port
1067  */
1068 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1069 {
1070 	struct fcoe_port *port;
1071 
1072 	port = (struct fcoe_port *)lport_priv(lport);
1073 	return port->data_src_addr;
1074 }
1075 
1076 /**
1077  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1078  *
1079  * @fip: FCoE controller.
1080  * @skb: FIP Packet.
1081  */
1082 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1083 {
1084 	struct fip_header *fiph;
1085 	struct ethhdr *eth_hdr;
1086 	u16 op;
1087 	u8 sub;
1088 
1089 	fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
1090 	eth_hdr = (struct ethhdr *)skb_mac_header(skb);
1091 	op = ntohs(fiph->fip_op);
1092 	sub = fiph->fip_subcode;
1093 
1094 	if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
1095 		BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
1096 		    eth_hdr->h_source, eth_hdr->h_dest);
1097 
1098 	skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1099 	dev_queue_xmit(skb);
1100 }
1101 
1102 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1103 {
1104 	struct Scsi_Host *shost = vport_to_shost(vport);
1105 	struct fc_lport *n_port = shost_priv(shost);
1106 	struct fcoe_port *port = lport_priv(n_port);
1107 	struct bnx2fc_interface *interface = port->priv;
1108 	struct net_device *netdev = interface->netdev;
1109 	struct fc_lport *vn_port;
1110 	int rc;
1111 	char buf[32];
1112 
1113 	rc = fcoe_validate_vport_create(vport);
1114 	if (rc) {
1115 		fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1116 		printk(KERN_ERR PFX "Failed to create vport, "
1117 		       "WWPN (0x%s) already exists\n",
1118 		       buf);
1119 		return rc;
1120 	}
1121 
1122 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1123 		printk(KERN_ERR PFX "vn ports cannot be created on"
1124 			"this interface\n");
1125 		return -EIO;
1126 	}
1127 	rtnl_lock();
1128 	mutex_lock(&bnx2fc_dev_lock);
1129 	vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1130 	mutex_unlock(&bnx2fc_dev_lock);
1131 	rtnl_unlock();
1132 
1133 	if (!vn_port) {
1134 		printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1135 			netdev->name);
1136 		return -EIO;
1137 	}
1138 
1139 	if (bnx2fc_devloss_tmo)
1140 		fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
1141 
1142 	if (disabled) {
1143 		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1144 	} else {
1145 		vn_port->boot_time = jiffies;
1146 		fc_lport_init(vn_port);
1147 		fc_fabric_login(vn_port);
1148 		fc_vport_setlink(vn_port);
1149 	}
1150 	return 0;
1151 }
1152 
1153 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1154 {
1155 	struct bnx2fc_lport *blport, *tmp;
1156 
1157 	spin_lock_bh(&hba->hba_lock);
1158 	list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1159 		if (blport->lport == lport) {
1160 			list_del(&blport->list);
1161 			kfree(blport);
1162 		}
1163 	}
1164 	spin_unlock_bh(&hba->hba_lock);
1165 }
1166 
1167 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1168 {
1169 	struct Scsi_Host *shost = vport_to_shost(vport);
1170 	struct fc_lport *n_port = shost_priv(shost);
1171 	struct fc_lport *vn_port = vport->dd_data;
1172 	struct fcoe_port *port = lport_priv(vn_port);
1173 	struct bnx2fc_interface *interface = port->priv;
1174 	struct fc_lport *v_port;
1175 	bool found = false;
1176 
1177 	mutex_lock(&n_port->lp_mutex);
1178 	list_for_each_entry(v_port, &n_port->vports, list)
1179 		if (v_port->vport == vport) {
1180 			found = true;
1181 			break;
1182 		}
1183 
1184 	if (!found) {
1185 		mutex_unlock(&n_port->lp_mutex);
1186 		return -ENOENT;
1187 	}
1188 	list_del(&vn_port->list);
1189 	mutex_unlock(&n_port->lp_mutex);
1190 	bnx2fc_free_vport(interface->hba, port->lport);
1191 	bnx2fc_port_shutdown(port->lport);
1192 	bnx2fc_interface_put(interface);
1193 	queue_work(bnx2fc_wq, &port->destroy_work);
1194 	return 0;
1195 }
1196 
1197 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1198 {
1199 	struct fc_lport *lport = vport->dd_data;
1200 
1201 	if (disable) {
1202 		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1203 		fc_fabric_logoff(lport);
1204 	} else {
1205 		lport->boot_time = jiffies;
1206 		fc_fabric_login(lport);
1207 		fc_vport_setlink(lport);
1208 	}
1209 	return 0;
1210 }
1211 
1212 
1213 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1214 {
1215 	struct net_device *netdev = interface->netdev;
1216 	struct net_device *physdev = interface->hba->phys_dev;
1217 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1218 	struct netdev_hw_addr *ha;
1219 	int sel_san_mac = 0;
1220 
1221 	/* setup Source MAC Address */
1222 	rcu_read_lock();
1223 	for_each_dev_addr(physdev, ha) {
1224 		BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1225 				ha->type);
1226 		printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1227 				ha->addr[1], ha->addr[2], ha->addr[3],
1228 				ha->addr[4], ha->addr[5]);
1229 
1230 		if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1231 		    (is_valid_ether_addr(ha->addr))) {
1232 			memcpy(ctlr->ctl_src_addr, ha->addr,
1233 			       ETH_ALEN);
1234 			sel_san_mac = 1;
1235 			BNX2FC_MISC_DBG("Found SAN MAC\n");
1236 		}
1237 	}
1238 	rcu_read_unlock();
1239 
1240 	if (!sel_san_mac)
1241 		return -ENODEV;
1242 
1243 	interface->fip_packet_type.func = bnx2fc_fip_recv;
1244 	interface->fip_packet_type.type = htons(ETH_P_FIP);
1245 	interface->fip_packet_type.dev = netdev;
1246 	dev_add_pack(&interface->fip_packet_type);
1247 
1248 	interface->fcoe_packet_type.func = bnx2fc_rcv;
1249 	interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1250 	interface->fcoe_packet_type.dev = netdev;
1251 	dev_add_pack(&interface->fcoe_packet_type);
1252 
1253 	return 0;
1254 }
1255 
1256 static int bnx2fc_attach_transport(void)
1257 {
1258 	bnx2fc_transport_template =
1259 		fc_attach_transport(&bnx2fc_transport_function);
1260 
1261 	if (bnx2fc_transport_template == NULL) {
1262 		printk(KERN_ERR PFX "Failed to attach FC transport\n");
1263 		return -ENODEV;
1264 	}
1265 
1266 	bnx2fc_vport_xport_template =
1267 		fc_attach_transport(&bnx2fc_vport_xport_function);
1268 	if (bnx2fc_vport_xport_template == NULL) {
1269 		printk(KERN_ERR PFX
1270 		       "Failed to attach FC transport for vport\n");
1271 		fc_release_transport(bnx2fc_transport_template);
1272 		bnx2fc_transport_template = NULL;
1273 		return -ENODEV;
1274 	}
1275 	return 0;
1276 }
1277 static void bnx2fc_release_transport(void)
1278 {
1279 	fc_release_transport(bnx2fc_transport_template);
1280 	fc_release_transport(bnx2fc_vport_xport_template);
1281 	bnx2fc_transport_template = NULL;
1282 	bnx2fc_vport_xport_template = NULL;
1283 }
1284 
1285 static void bnx2fc_interface_release(struct kref *kref)
1286 {
1287 	struct fcoe_ctlr_device *ctlr_dev;
1288 	struct bnx2fc_interface *interface;
1289 	struct fcoe_ctlr *ctlr;
1290 	struct net_device *netdev;
1291 
1292 	interface = container_of(kref, struct bnx2fc_interface, kref);
1293 	BNX2FC_MISC_DBG("Interface is being released\n");
1294 
1295 	ctlr = bnx2fc_to_ctlr(interface);
1296 	ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1297 	netdev = interface->netdev;
1298 
1299 	/* tear-down FIP controller */
1300 	if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1301 		fcoe_ctlr_destroy(ctlr);
1302 
1303 	fcoe_ctlr_device_delete(ctlr_dev);
1304 
1305 	dev_put(netdev);
1306 	module_put(THIS_MODULE);
1307 }
1308 
1309 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1310 {
1311 	kref_get(&interface->kref);
1312 }
1313 
1314 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1315 {
1316 	kref_put(&interface->kref, bnx2fc_interface_release);
1317 }
1318 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1319 {
1320 	/* Free the command manager */
1321 	if (hba->cmd_mgr) {
1322 		bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1323 		hba->cmd_mgr = NULL;
1324 	}
1325 	kfree(hba->tgt_ofld_list);
1326 	bnx2fc_unbind_pcidev(hba);
1327 	kfree(hba);
1328 }
1329 
1330 /**
1331  * bnx2fc_hba_create - create a new bnx2fc hba
1332  *
1333  * @cnic:	pointer to cnic device
1334  *
1335  * Creates a new FCoE hba on the given device.
1336  *
1337  */
1338 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1339 {
1340 	struct bnx2fc_hba *hba;
1341 	struct fcoe_capabilities *fcoe_cap;
1342 	int rc;
1343 
1344 	hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1345 	if (!hba) {
1346 		printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1347 		return NULL;
1348 	}
1349 	spin_lock_init(&hba->hba_lock);
1350 	mutex_init(&hba->hba_mutex);
1351 
1352 	hba->cnic = cnic;
1353 
1354 	hba->max_tasks = cnic->max_fcoe_exchanges;
1355 	hba->elstm_xids = (hba->max_tasks / 2);
1356 	hba->max_outstanding_cmds = hba->elstm_xids;
1357 	hba->max_xid = (hba->max_tasks - 1);
1358 
1359 	rc = bnx2fc_bind_pcidev(hba);
1360 	if (rc) {
1361 		printk(KERN_ERR PFX "create_adapter:  bind error\n");
1362 		goto bind_err;
1363 	}
1364 	hba->phys_dev = cnic->netdev;
1365 	hba->next_conn_id = 0;
1366 
1367 	hba->tgt_ofld_list =
1368 		kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1369 			GFP_KERNEL);
1370 	if (!hba->tgt_ofld_list) {
1371 		printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1372 		goto tgtofld_err;
1373 	}
1374 
1375 	hba->num_ofld_sess = 0;
1376 
1377 	hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1378 	if (!hba->cmd_mgr) {
1379 		printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1380 		goto cmgr_err;
1381 	}
1382 	fcoe_cap = &hba->fcoe_cap;
1383 
1384 	fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1385 					FCOE_IOS_PER_CONNECTION_SHIFT;
1386 	fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1387 					FCOE_LOGINS_PER_PORT_SHIFT;
1388 	fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1389 					FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1390 	fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1391 					FCOE_NPIV_WWN_PER_PORT_SHIFT;
1392 	fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1393 					FCOE_TARGETS_SUPPORTED_SHIFT;
1394 	fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1395 					FCOE_OUTSTANDING_COMMANDS_SHIFT;
1396 	fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1397 
1398 	init_waitqueue_head(&hba->shutdown_wait);
1399 	init_waitqueue_head(&hba->destroy_wait);
1400 	INIT_LIST_HEAD(&hba->vports);
1401 
1402 	return hba;
1403 
1404 cmgr_err:
1405 	kfree(hba->tgt_ofld_list);
1406 tgtofld_err:
1407 	bnx2fc_unbind_pcidev(hba);
1408 bind_err:
1409 	kfree(hba);
1410 	return NULL;
1411 }
1412 
1413 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1414 				      struct net_device *netdev,
1415 				      enum fip_state fip_mode)
1416 {
1417 	struct fcoe_ctlr_device *ctlr_dev;
1418 	struct bnx2fc_interface *interface;
1419 	struct fcoe_ctlr *ctlr;
1420 	int size;
1421 	int rc = 0;
1422 
1423 	size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1424 	ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1425 					 size);
1426 	if (!ctlr_dev) {
1427 		printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1428 		return NULL;
1429 	}
1430 	ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1431 	ctlr->cdev = ctlr_dev;
1432 	interface = fcoe_ctlr_priv(ctlr);
1433 	dev_hold(netdev);
1434 	kref_init(&interface->kref);
1435 	interface->hba = hba;
1436 	interface->netdev = netdev;
1437 
1438 	/* Initialize FIP */
1439 	fcoe_ctlr_init(ctlr, fip_mode);
1440 	ctlr->send = bnx2fc_fip_send;
1441 	ctlr->update_mac = bnx2fc_update_src_mac;
1442 	ctlr->get_src_addr = bnx2fc_get_src_mac;
1443 	set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1444 
1445 	rc = bnx2fc_interface_setup(interface);
1446 	if (!rc)
1447 		return interface;
1448 
1449 	fcoe_ctlr_destroy(ctlr);
1450 	dev_put(netdev);
1451 	fcoe_ctlr_device_delete(ctlr_dev);
1452 	return NULL;
1453 }
1454 
1455 /**
1456  * bnx2fc_if_create - Create FCoE instance on a given interface
1457  *
1458  * @interface:	FCoE interface to create a local port on
1459  * @parent:	Device pointer to be the parent in sysfs for the SCSI host
1460  * @npiv:	Indicates if the port is vport or not
1461  *
1462  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1463  *
1464  * Returns:	Allocated fc_lport or an error pointer
1465  */
1466 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1467 				  struct device *parent, int npiv)
1468 {
1469 	struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1470 	struct fc_lport		*lport, *n_port;
1471 	struct fcoe_port	*port;
1472 	struct Scsi_Host	*shost;
1473 	struct fc_vport		*vport = dev_to_vport(parent);
1474 	struct bnx2fc_lport	*blport;
1475 	struct bnx2fc_hba	*hba = interface->hba;
1476 	int			rc = 0;
1477 
1478 	blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1479 	if (!blport) {
1480 		BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1481 		return NULL;
1482 	}
1483 
1484 	/* Allocate Scsi_Host structure */
1485 	bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1486 	if (!npiv)
1487 		lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1488 	else
1489 		lport = libfc_vport_create(vport, sizeof(*port));
1490 
1491 	if (!lport) {
1492 		printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1493 		goto free_blport;
1494 	}
1495 	shost = lport->host;
1496 	port = lport_priv(lport);
1497 	port->lport = lport;
1498 	port->priv = interface;
1499 	port->get_netdev = bnx2fc_netdev;
1500 	INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1501 
1502 	/* Configure fcoe_port */
1503 	rc = bnx2fc_lport_config(lport);
1504 	if (rc)
1505 		goto lp_config_err;
1506 
1507 	if (npiv) {
1508 		printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1509 			vport->node_name, vport->port_name);
1510 		fc_set_wwnn(lport, vport->node_name);
1511 		fc_set_wwpn(lport, vport->port_name);
1512 	}
1513 	/* Configure netdev and networking properties of the lport */
1514 	rc = bnx2fc_net_config(lport, interface->netdev);
1515 	if (rc) {
1516 		printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1517 		goto lp_config_err;
1518 	}
1519 
1520 	rc = bnx2fc_shost_config(lport, parent);
1521 	if (rc) {
1522 		printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1523 			interface->netdev->name);
1524 		goto lp_config_err;
1525 	}
1526 
1527 	/* Initialize the libfc library */
1528 	rc = bnx2fc_libfc_config(lport);
1529 	if (rc) {
1530 		printk(KERN_ERR PFX "Couldnt configure libfc\n");
1531 		goto shost_err;
1532 	}
1533 	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1534 
1535 	if (bnx2fc_devloss_tmo)
1536 		fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo;
1537 
1538 	/* Allocate exchange manager */
1539 	if (!npiv)
1540 		rc = bnx2fc_em_config(lport, hba);
1541 	else {
1542 		shost = vport_to_shost(vport);
1543 		n_port = shost_priv(shost);
1544 		rc = fc_exch_mgr_list_clone(n_port, lport);
1545 	}
1546 
1547 	if (rc) {
1548 		printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1549 		goto shost_err;
1550 	}
1551 
1552 	bnx2fc_interface_get(interface);
1553 
1554 	spin_lock_bh(&hba->hba_lock);
1555 	blport->lport = lport;
1556 	list_add_tail(&blport->list, &hba->vports);
1557 	spin_unlock_bh(&hba->hba_lock);
1558 
1559 	return lport;
1560 
1561 shost_err:
1562 	scsi_remove_host(shost);
1563 lp_config_err:
1564 	scsi_host_put(lport->host);
1565 free_blport:
1566 	kfree(blport);
1567 	return NULL;
1568 }
1569 
1570 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1571 {
1572 	/* Dont listen for Ethernet packets anymore */
1573 	__dev_remove_pack(&interface->fcoe_packet_type);
1574 	__dev_remove_pack(&interface->fip_packet_type);
1575 	synchronize_net();
1576 }
1577 
1578 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1579 {
1580 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1581 	struct fc_lport *lport = ctlr->lp;
1582 	struct fcoe_port *port = lport_priv(lport);
1583 	struct bnx2fc_hba *hba = interface->hba;
1584 
1585 	/* Stop the transmit retry timer */
1586 	del_timer_sync(&port->timer);
1587 
1588 	/* Free existing transmit skbs */
1589 	fcoe_clean_pending_queue(lport);
1590 
1591 	bnx2fc_net_cleanup(interface);
1592 
1593 	bnx2fc_free_vport(hba, lport);
1594 }
1595 
1596 static void bnx2fc_if_destroy(struct fc_lport *lport)
1597 {
1598 
1599 	/* Free queued packets for the receive thread */
1600 	bnx2fc_clean_rx_queue(lport);
1601 
1602 	/* Detach from scsi-ml */
1603 	fc_remove_host(lport->host);
1604 	scsi_remove_host(lport->host);
1605 
1606 	/*
1607 	 * Note that only the physical lport will have the exchange manager.
1608 	 * for vports, this function is NOP
1609 	 */
1610 	fc_exch_mgr_free(lport);
1611 
1612 	/* Free memory used by statistical counters */
1613 	fc_lport_free_stats(lport);
1614 
1615 	/* Release Scsi_Host */
1616 	scsi_host_put(lport->host);
1617 }
1618 
1619 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1620 {
1621 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1622 	struct fc_lport *lport = ctlr->lp;
1623 	struct fcoe_port *port = lport_priv(lport);
1624 
1625 	bnx2fc_interface_cleanup(interface);
1626 	bnx2fc_stop(interface);
1627 	list_del(&interface->list);
1628 	bnx2fc_interface_put(interface);
1629 	queue_work(bnx2fc_wq, &port->destroy_work);
1630 }
1631 
1632 /**
1633  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1634  *
1635  * @buffer: The name of the Ethernet interface to be destroyed
1636  * @kp:     The associated kernel parameter
1637  *
1638  * Called from sysfs.
1639  *
1640  * Returns: 0 for success
1641  */
1642 static int bnx2fc_destroy(struct net_device *netdev)
1643 {
1644 	struct bnx2fc_interface *interface = NULL;
1645 	struct workqueue_struct *timer_work_queue;
1646 	struct fcoe_ctlr *ctlr;
1647 	int rc = 0;
1648 
1649 	rtnl_lock();
1650 	mutex_lock(&bnx2fc_dev_lock);
1651 
1652 	interface = bnx2fc_interface_lookup(netdev);
1653 	ctlr = bnx2fc_to_ctlr(interface);
1654 	if (!interface || !ctlr->lp) {
1655 		rc = -ENODEV;
1656 		printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1657 		goto netdev_err;
1658 	}
1659 
1660 	timer_work_queue = interface->timer_work_queue;
1661 	__bnx2fc_destroy(interface);
1662 	destroy_workqueue(timer_work_queue);
1663 
1664 netdev_err:
1665 	mutex_unlock(&bnx2fc_dev_lock);
1666 	rtnl_unlock();
1667 	return rc;
1668 }
1669 
1670 static void bnx2fc_destroy_work(struct work_struct *work)
1671 {
1672 	struct fcoe_port *port;
1673 	struct fc_lport *lport;
1674 
1675 	port = container_of(work, struct fcoe_port, destroy_work);
1676 	lport = port->lport;
1677 
1678 	BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1679 
1680 	bnx2fc_if_destroy(lport);
1681 }
1682 
1683 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1684 {
1685 	bnx2fc_free_fw_resc(hba);
1686 	bnx2fc_free_task_ctx(hba);
1687 }
1688 
1689 /**
1690  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1691  *			pci structure
1692  *
1693  * @hba:		Adapter instance
1694  */
1695 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1696 {
1697 	if (bnx2fc_setup_task_ctx(hba))
1698 		goto mem_err;
1699 
1700 	if (bnx2fc_setup_fw_resc(hba))
1701 		goto mem_err;
1702 
1703 	return 0;
1704 mem_err:
1705 	bnx2fc_unbind_adapter_devices(hba);
1706 	return -ENOMEM;
1707 }
1708 
1709 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1710 {
1711 	struct cnic_dev *cnic;
1712 	struct pci_dev *pdev;
1713 
1714 	if (!hba->cnic) {
1715 		printk(KERN_ERR PFX "cnic is NULL\n");
1716 		return -ENODEV;
1717 	}
1718 	cnic = hba->cnic;
1719 	pdev = hba->pcidev = cnic->pcidev;
1720 	if (!hba->pcidev)
1721 		return -ENODEV;
1722 
1723 	switch (pdev->device) {
1724 	case PCI_DEVICE_ID_NX2_57710:
1725 		strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1726 		break;
1727 	case PCI_DEVICE_ID_NX2_57711:
1728 		strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1729 		break;
1730 	case PCI_DEVICE_ID_NX2_57712:
1731 	case PCI_DEVICE_ID_NX2_57712_MF:
1732 	case PCI_DEVICE_ID_NX2_57712_VF:
1733 		strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1734 		break;
1735 	case PCI_DEVICE_ID_NX2_57800:
1736 	case PCI_DEVICE_ID_NX2_57800_MF:
1737 	case PCI_DEVICE_ID_NX2_57800_VF:
1738 		strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1739 		break;
1740 	case PCI_DEVICE_ID_NX2_57810:
1741 	case PCI_DEVICE_ID_NX2_57810_MF:
1742 	case PCI_DEVICE_ID_NX2_57810_VF:
1743 		strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1744 		break;
1745 	case PCI_DEVICE_ID_NX2_57840:
1746 	case PCI_DEVICE_ID_NX2_57840_MF:
1747 	case PCI_DEVICE_ID_NX2_57840_VF:
1748 	case PCI_DEVICE_ID_NX2_57840_2_20:
1749 	case PCI_DEVICE_ID_NX2_57840_4_10:
1750 		strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1751 		break;
1752 	default:
1753 		pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1754 		break;
1755 	}
1756 	pci_dev_get(hba->pcidev);
1757 	return 0;
1758 }
1759 
1760 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1761 {
1762 	if (hba->pcidev) {
1763 		hba->chip_num[0] = '\0';
1764 		pci_dev_put(hba->pcidev);
1765 	}
1766 	hba->pcidev = NULL;
1767 }
1768 
1769 /**
1770  * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1771  *
1772  * @handle:    transport handle pointing to adapter struture
1773  */
1774 static int bnx2fc_ulp_get_stats(void *handle)
1775 {
1776 	struct bnx2fc_hba *hba = handle;
1777 	struct cnic_dev *cnic;
1778 	struct fcoe_stats_info *stats_addr;
1779 
1780 	if (!hba)
1781 		return -EINVAL;
1782 
1783 	cnic = hba->cnic;
1784 	stats_addr = &cnic->stats_addr->fcoe_stat;
1785 	if (!stats_addr)
1786 		return -EINVAL;
1787 
1788 	strncpy(stats_addr->version, BNX2FC_VERSION,
1789 		sizeof(stats_addr->version));
1790 	stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1791 	stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1792 
1793 	return 0;
1794 }
1795 
1796 
1797 /**
1798  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1799  *
1800  * @handle:	transport handle pointing to adapter structure
1801  *
1802  * This function maps adapter structure to pcidev structure and initiates
1803  *	firmware handshake to enable/initialize on-chip FCoE components.
1804  *	This bnx2fc - cnic interface api callback is used after following
1805  *	conditions are met -
1806  *	a) underlying network interface is up (marked by event NETDEV_UP
1807  *		from netdev
1808  *	b) bnx2fc adatper structure is registered.
1809  */
1810 static void bnx2fc_ulp_start(void *handle)
1811 {
1812 	struct bnx2fc_hba *hba = handle;
1813 	struct bnx2fc_interface *interface;
1814 	struct fcoe_ctlr *ctlr;
1815 	struct fc_lport *lport;
1816 
1817 	mutex_lock(&bnx2fc_dev_lock);
1818 
1819 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1820 		bnx2fc_fw_init(hba);
1821 
1822 	BNX2FC_MISC_DBG("bnx2fc started.\n");
1823 
1824 	list_for_each_entry(interface, &if_list, list) {
1825 		if (interface->hba == hba) {
1826 			ctlr = bnx2fc_to_ctlr(interface);
1827 			lport = ctlr->lp;
1828 			/* Kick off Fabric discovery*/
1829 			printk(KERN_ERR PFX "ulp_init: start discovery\n");
1830 			lport->tt.frame_send = bnx2fc_xmit;
1831 			bnx2fc_start_disc(interface);
1832 		}
1833 	}
1834 
1835 	mutex_unlock(&bnx2fc_dev_lock);
1836 }
1837 
1838 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1839 {
1840 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
1841 	fc_fabric_logoff(lport);
1842 	fc_lport_destroy(lport);
1843 }
1844 
1845 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1846 {
1847 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1848 	struct fc_lport *lport;
1849 	struct fc_lport *vport;
1850 
1851 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1852 		return;
1853 
1854 	lport = ctlr->lp;
1855 	bnx2fc_port_shutdown(lport);
1856 
1857 	mutex_lock(&lport->lp_mutex);
1858 	list_for_each_entry(vport, &lport->vports, list)
1859 		fc_host_port_type(vport->host) =
1860 					FC_PORTTYPE_UNKNOWN;
1861 	mutex_unlock(&lport->lp_mutex);
1862 	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1863 	fcoe_ctlr_link_down(ctlr);
1864 	fcoe_clean_pending_queue(lport);
1865 }
1866 
1867 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1868 {
1869 #define BNX2FC_INIT_POLL_TIME		(1000 / HZ)
1870 	int rc = -1;
1871 	int i = HZ;
1872 
1873 	rc = bnx2fc_bind_adapter_devices(hba);
1874 	if (rc) {
1875 		printk(KERN_ALERT PFX
1876 			"bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1877 		goto err_out;
1878 	}
1879 
1880 	rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1881 	if (rc) {
1882 		printk(KERN_ALERT PFX
1883 			"bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1884 		goto err_unbind;
1885 	}
1886 
1887 	/*
1888 	 * Wait until the adapter init message is complete, and adapter
1889 	 * state is UP.
1890 	 */
1891 	while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1892 		msleep(BNX2FC_INIT_POLL_TIME);
1893 
1894 	if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1895 		printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1896 				"Ignoring...\n",
1897 				hba->cnic->netdev->name);
1898 		rc = -1;
1899 		goto err_unbind;
1900 	}
1901 
1902 
1903 	set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1904 	return 0;
1905 
1906 err_unbind:
1907 	bnx2fc_unbind_adapter_devices(hba);
1908 err_out:
1909 	return rc;
1910 }
1911 
1912 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1913 {
1914 	if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1915 		if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1916 			init_timer(&hba->destroy_timer);
1917 			hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1918 								jiffies;
1919 			hba->destroy_timer.function = bnx2fc_destroy_timer;
1920 			hba->destroy_timer.data = (unsigned long)hba;
1921 			add_timer(&hba->destroy_timer);
1922 			wait_event_interruptible(hba->destroy_wait,
1923 					test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1924 						 &hba->flags));
1925 			clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1926 			/* This should never happen */
1927 			if (signal_pending(current))
1928 				flush_signals(current);
1929 
1930 			del_timer_sync(&hba->destroy_timer);
1931 		}
1932 		bnx2fc_unbind_adapter_devices(hba);
1933 	}
1934 }
1935 
1936 /**
1937  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1938  *
1939  * @handle:	transport handle pointing to adapter structure
1940  *
1941  * Driver checks if adapter is already in shutdown mode, if not start
1942  *	the shutdown process.
1943  */
1944 static void bnx2fc_ulp_stop(void *handle)
1945 {
1946 	struct bnx2fc_hba *hba = handle;
1947 	struct bnx2fc_interface *interface;
1948 
1949 	printk(KERN_ERR "ULP_STOP\n");
1950 
1951 	mutex_lock(&bnx2fc_dev_lock);
1952 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1953 		goto exit;
1954 	list_for_each_entry(interface, &if_list, list) {
1955 		if (interface->hba == hba)
1956 			bnx2fc_stop(interface);
1957 	}
1958 	BUG_ON(hba->num_ofld_sess != 0);
1959 
1960 	mutex_lock(&hba->hba_mutex);
1961 	clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1962 	clear_bit(ADAPTER_STATE_GOING_DOWN,
1963 		  &hba->adapter_state);
1964 
1965 	clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1966 	mutex_unlock(&hba->hba_mutex);
1967 
1968 	bnx2fc_fw_destroy(hba);
1969 exit:
1970 	mutex_unlock(&bnx2fc_dev_lock);
1971 }
1972 
1973 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1974 {
1975 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1976 	struct fc_lport *lport;
1977 	int wait_cnt = 0;
1978 
1979 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
1980 	/* Kick off FIP/FLOGI */
1981 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1982 		printk(KERN_ERR PFX "Init not done yet\n");
1983 		return;
1984 	}
1985 
1986 	lport = ctlr->lp;
1987 	BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1988 
1989 	if (!bnx2fc_link_ok(lport) && interface->enabled) {
1990 		BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1991 		fcoe_ctlr_link_up(ctlr);
1992 		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1993 		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1994 	}
1995 
1996 	/* wait for the FCF to be selected before issuing FLOGI */
1997 	while (!ctlr->sel_fcf) {
1998 		msleep(250);
1999 		/* give up after 3 secs */
2000 		if (++wait_cnt > 12)
2001 			break;
2002 	}
2003 
2004 	/* Reset max receive frame size to default */
2005 	if (fc_set_mfs(lport, BNX2FC_MFS))
2006 		return;
2007 
2008 	fc_lport_init(lport);
2009 	fc_fabric_login(lport);
2010 }
2011 
2012 
2013 /**
2014  * bnx2fc_ulp_init - Initialize an adapter instance
2015  *
2016  * @dev :	cnic device handle
2017  * Called from cnic_register_driver() context to initialize all
2018  *	enumerated cnic devices. This routine allocates adapter structure
2019  *	and other device specific resources.
2020  */
2021 static void bnx2fc_ulp_init(struct cnic_dev *dev)
2022 {
2023 	struct bnx2fc_hba *hba;
2024 	int rc = 0;
2025 
2026 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
2027 	/* bnx2fc works only when bnx2x is loaded */
2028 	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
2029 	    (dev->max_fcoe_conn == 0)) {
2030 		printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
2031 				    " flags: %lx fcoe_conn: %d\n",
2032 			dev->netdev->name, dev->flags, dev->max_fcoe_conn);
2033 		return;
2034 	}
2035 
2036 	hba = bnx2fc_hba_create(dev);
2037 	if (!hba) {
2038 		printk(KERN_ERR PFX "hba initialization failed\n");
2039 		return;
2040 	}
2041 
2042 	pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
2043 
2044 	/* Add HBA to the adapter list */
2045 	mutex_lock(&bnx2fc_dev_lock);
2046 	list_add_tail(&hba->list, &adapter_list);
2047 	adapter_count++;
2048 	mutex_unlock(&bnx2fc_dev_lock);
2049 
2050 	dev->fcoe_cap = &hba->fcoe_cap;
2051 	clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2052 	rc = dev->register_device(dev, CNIC_ULP_FCOE,
2053 						(void *) hba);
2054 	if (rc)
2055 		printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2056 	else
2057 		set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2058 }
2059 
2060 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2061 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2062 {
2063 	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2064 
2065 	if (interface->enabled == true) {
2066 		if (!ctlr->lp) {
2067 			pr_err(PFX "__bnx2fc_disable: lport not found\n");
2068 			return -ENODEV;
2069 		} else {
2070 			interface->enabled = false;
2071 			fcoe_ctlr_link_down(ctlr);
2072 			fcoe_clean_pending_queue(ctlr->lp);
2073 		}
2074 	}
2075 	return 0;
2076 }
2077 
2078 /**
2079  * Deperecated: Use bnx2fc_enabled()
2080  */
2081 static int bnx2fc_disable(struct net_device *netdev)
2082 {
2083 	struct bnx2fc_interface *interface;
2084 	struct fcoe_ctlr *ctlr;
2085 	int rc = 0;
2086 
2087 	rtnl_lock();
2088 	mutex_lock(&bnx2fc_dev_lock);
2089 
2090 	interface = bnx2fc_interface_lookup(netdev);
2091 	ctlr = bnx2fc_to_ctlr(interface);
2092 
2093 	if (!interface) {
2094 		rc = -ENODEV;
2095 		pr_err(PFX "bnx2fc_disable: interface not found\n");
2096 	} else {
2097 		rc = __bnx2fc_disable(ctlr);
2098 	}
2099 	mutex_unlock(&bnx2fc_dev_lock);
2100 	rtnl_unlock();
2101 	return rc;
2102 }
2103 
2104 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2105 				      struct cnic_fc_npiv_tbl *npiv_tbl)
2106 {
2107 	struct fc_vport_identifiers vpid;
2108 	uint i, created = 0;
2109 
2110 	if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2111 		BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2112 		goto done;
2113 	}
2114 
2115 	/* Sanity check the first entry to make sure it's not 0 */
2116 	if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2117 	    wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2118 		BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2119 		goto done;
2120 	}
2121 
2122 	vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2123 	vpid.vport_type = FC_PORTTYPE_NPIV;
2124 	vpid.disable = false;
2125 
2126 	for (i = 0; i < npiv_tbl->count; i++) {
2127 		vpid.node_name = wwn_to_u64(npiv_tbl->wwnn[i]);
2128 		vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2129 		scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2130 		    "NPIV[%u]:%016llx-%016llx",
2131 		    created, vpid.port_name, vpid.node_name);
2132 		if (fc_vport_create(lport->host, 0, &vpid))
2133 			created++;
2134 		else
2135 			BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2136 	}
2137 done:
2138 	return created;
2139 }
2140 
2141 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2142 {
2143 	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2144 	struct bnx2fc_hba *hba;
2145 	struct cnic_fc_npiv_tbl *npiv_tbl;
2146 	struct fc_lport *lport;
2147 
2148 	if (interface->enabled == false) {
2149 		if (!ctlr->lp) {
2150 			pr_err(PFX "__bnx2fc_enable: lport not found\n");
2151 			return -ENODEV;
2152 		} else if (!bnx2fc_link_ok(ctlr->lp)) {
2153 			fcoe_ctlr_link_up(ctlr);
2154 			interface->enabled = true;
2155 		}
2156 	}
2157 
2158 	/* Create static NPIV ports if any are contained in NVRAM */
2159 	hba = interface->hba;
2160 	lport = ctlr->lp;
2161 
2162 	if (!hba)
2163 		goto done;
2164 
2165 	if (!hba->cnic)
2166 		goto done;
2167 
2168 	if (!lport)
2169 		goto done;
2170 
2171 	if (!lport->host)
2172 		goto done;
2173 
2174 	if (!hba->cnic->get_fc_npiv_tbl)
2175 		goto done;
2176 
2177 	npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2178 	if (!npiv_tbl)
2179 		goto done;
2180 
2181 	if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2182 		goto done_free;
2183 
2184 	bnx2fc_npiv_create_vports(lport, npiv_tbl);
2185 done_free:
2186 	kfree(npiv_tbl);
2187 done:
2188 	return 0;
2189 }
2190 
2191 /**
2192  * Deprecated: Use bnx2fc_enabled()
2193  */
2194 static int bnx2fc_enable(struct net_device *netdev)
2195 {
2196 	struct bnx2fc_interface *interface;
2197 	struct fcoe_ctlr *ctlr;
2198 	int rc = 0;
2199 
2200 	rtnl_lock();
2201 	mutex_lock(&bnx2fc_dev_lock);
2202 
2203 	interface = bnx2fc_interface_lookup(netdev);
2204 	ctlr = bnx2fc_to_ctlr(interface);
2205 	if (!interface) {
2206 		rc = -ENODEV;
2207 		pr_err(PFX "bnx2fc_enable: interface not found\n");
2208 	} else {
2209 		rc = __bnx2fc_enable(ctlr);
2210 	}
2211 
2212 	mutex_unlock(&bnx2fc_dev_lock);
2213 	rtnl_unlock();
2214 	return rc;
2215 }
2216 
2217 /**
2218  * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2219  * @cdev: The FCoE Controller that is being enabled or disabled
2220  *
2221  * fcoe_sysfs will ensure that the state of 'enabled' has
2222  * changed, so no checking is necessary here. This routine simply
2223  * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2224  * When those routines are removed the functionality can be merged
2225  * here.
2226  */
2227 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2228 {
2229 	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2230 
2231 	switch (cdev->enabled) {
2232 	case FCOE_CTLR_ENABLED:
2233 		return __bnx2fc_enable(ctlr);
2234 	case FCOE_CTLR_DISABLED:
2235 		return __bnx2fc_disable(ctlr);
2236 	case FCOE_CTLR_UNUSED:
2237 	default:
2238 		return -ENOTSUPP;
2239 	};
2240 }
2241 
2242 enum bnx2fc_create_link_state {
2243 	BNX2FC_CREATE_LINK_DOWN,
2244 	BNX2FC_CREATE_LINK_UP,
2245 };
2246 
2247 /**
2248  * _bnx2fc_create() - Create bnx2fc FCoE interface
2249  * @netdev  :   The net_device object the Ethernet interface to create on
2250  * @fip_mode:   The FIP mode for this creation
2251  * @link_state: The ctlr link state on creation
2252  *
2253  * Called from either the libfcoe 'create' module parameter
2254  * via fcoe_create or from fcoe_syfs's ctlr_create file.
2255  *
2256  * libfcoe's 'create' module parameter is deprecated so some
2257  * consolidation of code can be done when that interface is
2258  * removed.
2259  *
2260  * Returns: 0 for success
2261  */
2262 static int _bnx2fc_create(struct net_device *netdev,
2263 			  enum fip_state fip_mode,
2264 			  enum bnx2fc_create_link_state link_state)
2265 {
2266 	struct fcoe_ctlr_device *cdev;
2267 	struct fcoe_ctlr *ctlr;
2268 	struct bnx2fc_interface *interface;
2269 	struct bnx2fc_hba *hba;
2270 	struct net_device *phys_dev = netdev;
2271 	struct fc_lport *lport;
2272 	struct ethtool_drvinfo drvinfo;
2273 	int rc = 0;
2274 	int vlan_id = 0;
2275 
2276 	BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2277 	if (fip_mode != FIP_MODE_FABRIC) {
2278 		printk(KERN_ERR "fip mode not FABRIC\n");
2279 		return -EIO;
2280 	}
2281 
2282 	rtnl_lock();
2283 
2284 	mutex_lock(&bnx2fc_dev_lock);
2285 
2286 	if (!try_module_get(THIS_MODULE)) {
2287 		rc = -EINVAL;
2288 		goto mod_err;
2289 	}
2290 
2291 	/* obtain physical netdev */
2292 	if (netdev->priv_flags & IFF_802_1Q_VLAN)
2293 		phys_dev = vlan_dev_real_dev(netdev);
2294 
2295 	/* verify if the physical device is a netxtreme2 device */
2296 	if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2297 		memset(&drvinfo, 0, sizeof(drvinfo));
2298 		phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2299 		if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2300 			printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2301 			rc = -EINVAL;
2302 			goto netdev_err;
2303 		}
2304 	} else {
2305 		printk(KERN_ERR PFX "unable to obtain drv_info\n");
2306 		rc = -EINVAL;
2307 		goto netdev_err;
2308 	}
2309 
2310 	/* obtain interface and initialize rest of the structure */
2311 	hba = bnx2fc_hba_lookup(phys_dev);
2312 	if (!hba) {
2313 		rc = -ENODEV;
2314 		printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2315 		goto netdev_err;
2316 	}
2317 
2318 	if (bnx2fc_interface_lookup(netdev)) {
2319 		rc = -EEXIST;
2320 		goto netdev_err;
2321 	}
2322 
2323 	interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2324 	if (!interface) {
2325 		printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2326 		rc = -ENOMEM;
2327 		goto ifput_err;
2328 	}
2329 
2330 	if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2331 		vlan_id = vlan_dev_vlan_id(netdev);
2332 		interface->vlan_enabled = 1;
2333 	}
2334 
2335 	ctlr = bnx2fc_to_ctlr(interface);
2336 	cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2337 	interface->vlan_id = vlan_id;
2338 	interface->tm_timeout = BNX2FC_TM_TIMEOUT;
2339 
2340 	interface->timer_work_queue =
2341 			create_singlethread_workqueue("bnx2fc_timer_wq");
2342 	if (!interface->timer_work_queue) {
2343 		printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2344 		rc = -EINVAL;
2345 		goto ifput_err;
2346 	}
2347 
2348 	lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2349 	if (!lport) {
2350 		printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2351 			netdev->name);
2352 		rc = -EINVAL;
2353 		goto if_create_err;
2354 	}
2355 
2356 	/* Add interface to if_list */
2357 	list_add_tail(&interface->list, &if_list);
2358 
2359 	lport->boot_time = jiffies;
2360 
2361 	/* Make this master N_port */
2362 	ctlr->lp = lport;
2363 
2364 	if (link_state == BNX2FC_CREATE_LINK_UP)
2365 		cdev->enabled = FCOE_CTLR_ENABLED;
2366 	else
2367 		cdev->enabled = FCOE_CTLR_DISABLED;
2368 
2369 	if (link_state == BNX2FC_CREATE_LINK_UP &&
2370 	    !bnx2fc_link_ok(lport)) {
2371 		fcoe_ctlr_link_up(ctlr);
2372 		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2373 		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2374 	}
2375 
2376 	BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2377 	bnx2fc_start_disc(interface);
2378 
2379 	if (link_state == BNX2FC_CREATE_LINK_UP)
2380 		interface->enabled = true;
2381 
2382 	/*
2383 	 * Release from kref_init in bnx2fc_interface_setup, on success
2384 	 * lport should be holding a reference taken in bnx2fc_if_create
2385 	 */
2386 	bnx2fc_interface_put(interface);
2387 	/* put netdev that was held while calling dev_get_by_name */
2388 	mutex_unlock(&bnx2fc_dev_lock);
2389 	rtnl_unlock();
2390 	return 0;
2391 
2392 if_create_err:
2393 	destroy_workqueue(interface->timer_work_queue);
2394 ifput_err:
2395 	bnx2fc_net_cleanup(interface);
2396 	bnx2fc_interface_put(interface);
2397 	goto mod_err;
2398 netdev_err:
2399 	module_put(THIS_MODULE);
2400 mod_err:
2401 	mutex_unlock(&bnx2fc_dev_lock);
2402 	rtnl_unlock();
2403 	return rc;
2404 }
2405 
2406 /**
2407  * bnx2fc_create() - Create a bnx2fc interface
2408  * @netdev  : The net_device object the Ethernet interface to create on
2409  * @fip_mode: The FIP mode for this creation
2410  *
2411  * Called from fcoe transport
2412  *
2413  * Returns: 0 for success
2414  */
2415 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2416 {
2417 	return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2418 }
2419 
2420 /**
2421  * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2422  * @netdev: The net_device to be used by the allocated FCoE Controller
2423  *
2424  * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2425  * in a link_down state. The allows the user an opportunity to configure
2426  * the FCoE Controller from sysfs before enabling the FCoE Controller.
2427  *
2428  * Creating in with this routine starts the FCoE Controller in Fabric
2429  * mode. The user can change to VN2VN or another mode before enabling.
2430  */
2431 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2432 {
2433 	return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2434 			      BNX2FC_CREATE_LINK_DOWN);
2435 }
2436 
2437 /**
2438  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2439  *
2440  * @cnic:	Pointer to cnic device instance
2441  *
2442  **/
2443 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2444 {
2445 	struct bnx2fc_hba *hba;
2446 
2447 	/* Called with bnx2fc_dev_lock held */
2448 	list_for_each_entry(hba, &adapter_list, list) {
2449 		if (hba->cnic == cnic)
2450 			return hba;
2451 	}
2452 	return NULL;
2453 }
2454 
2455 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2456 							*netdev)
2457 {
2458 	struct bnx2fc_interface *interface;
2459 
2460 	/* Called with bnx2fc_dev_lock held */
2461 	list_for_each_entry(interface, &if_list, list) {
2462 		if (interface->netdev == netdev)
2463 			return interface;
2464 	}
2465 	return NULL;
2466 }
2467 
2468 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2469 						      *phys_dev)
2470 {
2471 	struct bnx2fc_hba *hba;
2472 
2473 	/* Called with bnx2fc_dev_lock held */
2474 	list_for_each_entry(hba, &adapter_list, list) {
2475 		if (hba->phys_dev == phys_dev)
2476 			return hba;
2477 	}
2478 	printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2479 	return NULL;
2480 }
2481 
2482 /**
2483  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2484  *
2485  * @dev		cnic device handle
2486  */
2487 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2488 {
2489 	struct bnx2fc_hba *hba;
2490 	struct bnx2fc_interface *interface, *tmp;
2491 
2492 	BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2493 
2494 	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2495 		printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2496 			dev->netdev->name, dev->flags);
2497 		return;
2498 	}
2499 
2500 	mutex_lock(&bnx2fc_dev_lock);
2501 	hba = bnx2fc_find_hba_for_cnic(dev);
2502 	if (!hba) {
2503 		printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2504 		       dev);
2505 		mutex_unlock(&bnx2fc_dev_lock);
2506 		return;
2507 	}
2508 
2509 	list_del_init(&hba->list);
2510 	adapter_count--;
2511 
2512 	list_for_each_entry_safe(interface, tmp, &if_list, list)
2513 		/* destroy not called yet, move to quiesced list */
2514 		if (interface->hba == hba)
2515 			__bnx2fc_destroy(interface);
2516 	mutex_unlock(&bnx2fc_dev_lock);
2517 
2518 	/* Ensure ALL destroy work has been completed before return */
2519 	flush_workqueue(bnx2fc_wq);
2520 
2521 	bnx2fc_ulp_stop(hba);
2522 	/* unregister cnic device */
2523 	if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2524 		hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2525 	bnx2fc_hba_destroy(hba);
2526 }
2527 
2528 /**
2529  * bnx2fc_fcoe_reset - Resets the fcoe
2530  *
2531  * @shost: shost the reset is from
2532  *
2533  * Returns: always 0
2534  */
2535 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2536 {
2537 	struct fc_lport *lport = shost_priv(shost);
2538 	fc_lport_reset(lport);
2539 	return 0;
2540 }
2541 
2542 
2543 static bool bnx2fc_match(struct net_device *netdev)
2544 {
2545 	struct net_device *phys_dev = netdev;
2546 
2547 	mutex_lock(&bnx2fc_dev_lock);
2548 	if (netdev->priv_flags & IFF_802_1Q_VLAN)
2549 		phys_dev = vlan_dev_real_dev(netdev);
2550 
2551 	if (bnx2fc_hba_lookup(phys_dev)) {
2552 		mutex_unlock(&bnx2fc_dev_lock);
2553 		return true;
2554 	}
2555 
2556 	mutex_unlock(&bnx2fc_dev_lock);
2557 	return false;
2558 }
2559 
2560 
2561 static struct fcoe_transport bnx2fc_transport = {
2562 	.name = {"bnx2fc"},
2563 	.attached = false,
2564 	.list = LIST_HEAD_INIT(bnx2fc_transport.list),
2565 	.alloc = bnx2fc_ctlr_alloc,
2566 	.match = bnx2fc_match,
2567 	.create = bnx2fc_create,
2568 	.destroy = bnx2fc_destroy,
2569 	.enable = bnx2fc_enable,
2570 	.disable = bnx2fc_disable,
2571 };
2572 
2573 /**
2574  * bnx2fc_percpu_thread_create - Create a receive thread for an
2575  *				 online CPU
2576  *
2577  * @cpu: cpu index for the online cpu
2578  */
2579 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2580 {
2581 	struct bnx2fc_percpu_s *p;
2582 	struct task_struct *thread;
2583 
2584 	p = &per_cpu(bnx2fc_percpu, cpu);
2585 
2586 	thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2587 					(void *)p, cpu_to_node(cpu),
2588 					"bnx2fc_thread/%d", cpu);
2589 	/* bind thread to the cpu */
2590 	if (likely(!IS_ERR(thread))) {
2591 		kthread_bind(thread, cpu);
2592 		p->iothread = thread;
2593 		wake_up_process(thread);
2594 	}
2595 }
2596 
2597 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2598 {
2599 	struct bnx2fc_percpu_s *p;
2600 	struct task_struct *thread;
2601 	struct bnx2fc_work *work, *tmp;
2602 
2603 	BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2604 
2605 	/* Prevent any new work from being queued for this CPU */
2606 	p = &per_cpu(bnx2fc_percpu, cpu);
2607 	spin_lock_bh(&p->fp_work_lock);
2608 	thread = p->iothread;
2609 	p->iothread = NULL;
2610 
2611 
2612 	/* Free all work in the list */
2613 	list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2614 		list_del_init(&work->list);
2615 		bnx2fc_process_cq_compl(work->tgt, work->wqe);
2616 		kfree(work);
2617 	}
2618 
2619 	spin_unlock_bh(&p->fp_work_lock);
2620 
2621 	if (thread)
2622 		kthread_stop(thread);
2623 }
2624 
2625 /**
2626  * bnx2fc_cpu_callback - Handler for CPU hotplug events
2627  *
2628  * @nfb:    The callback data block
2629  * @action: The event triggering the callback
2630  * @hcpu:   The index of the CPU that the event is for
2631  *
2632  * This creates or destroys per-CPU data for fcoe
2633  *
2634  * Returns NOTIFY_OK always.
2635  */
2636 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2637 			     unsigned long action, void *hcpu)
2638 {
2639 	unsigned cpu = (unsigned long)hcpu;
2640 
2641 	switch (action) {
2642 	case CPU_ONLINE:
2643 	case CPU_ONLINE_FROZEN:
2644 		printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2645 		bnx2fc_percpu_thread_create(cpu);
2646 		break;
2647 	case CPU_DEAD:
2648 	case CPU_DEAD_FROZEN:
2649 		printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2650 		bnx2fc_percpu_thread_destroy(cpu);
2651 		break;
2652 	default:
2653 		break;
2654 	}
2655 	return NOTIFY_OK;
2656 }
2657 
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 /**
2668  * bnx2fc_mod_init - module init entry point
2669  *
2670  * Initialize driver wide global data structures, and register
2671  * with cnic module
2672  **/
2673 static int __init bnx2fc_mod_init(void)
2674 {
2675 	struct fcoe_percpu_s *bg;
2676 	struct task_struct *l2_thread;
2677 	int rc = 0;
2678 	unsigned int cpu = 0;
2679 	struct bnx2fc_percpu_s *p;
2680 
2681 	printk(KERN_INFO PFX "%s", version);
2682 
2683 	/* register as a fcoe transport */
2684 	rc = fcoe_transport_attach(&bnx2fc_transport);
2685 	if (rc) {
2686 		printk(KERN_ERR "failed to register an fcoe transport, check "
2687 			"if libfcoe is loaded\n");
2688 		goto out;
2689 	}
2690 
2691 	INIT_LIST_HEAD(&adapter_list);
2692 	INIT_LIST_HEAD(&if_list);
2693 	mutex_init(&bnx2fc_dev_lock);
2694 	adapter_count = 0;
2695 
2696 	/* Attach FC transport template */
2697 	rc = bnx2fc_attach_transport();
2698 	if (rc)
2699 		goto detach_ft;
2700 
2701 	bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2702 	if (!bnx2fc_wq) {
2703 		rc = -ENOMEM;
2704 		goto release_bt;
2705 	}
2706 
2707 	bg = &bnx2fc_global;
2708 	skb_queue_head_init(&bg->fcoe_rx_list);
2709 	l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2710 				   (void *)bg,
2711 				   "bnx2fc_l2_thread");
2712 	if (IS_ERR(l2_thread)) {
2713 		rc = PTR_ERR(l2_thread);
2714 		goto free_wq;
2715 	}
2716 	wake_up_process(l2_thread);
2717 	spin_lock_bh(&bg->fcoe_rx_list.lock);
2718 	bg->thread = l2_thread;
2719 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2720 
2721 	for_each_possible_cpu(cpu) {
2722 		p = &per_cpu(bnx2fc_percpu, cpu);
2723 		INIT_LIST_HEAD(&p->work_list);
2724 		spin_lock_init(&p->fp_work_lock);
2725 	}
2726 
2727 	cpu_notifier_register_begin();
2728 
2729 	for_each_online_cpu(cpu) {
2730 		bnx2fc_percpu_thread_create(cpu);
2731 	}
2732 
2733 	/* Initialize per CPU interrupt thread */
2734 	__register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2735 
2736 	cpu_notifier_register_done();
2737 
2738 	cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2739 
2740 	return 0;
2741 
2742 free_wq:
2743 	destroy_workqueue(bnx2fc_wq);
2744 release_bt:
2745 	bnx2fc_release_transport();
2746 detach_ft:
2747 	fcoe_transport_detach(&bnx2fc_transport);
2748 out:
2749 	return rc;
2750 }
2751 
2752 static void __exit bnx2fc_mod_exit(void)
2753 {
2754 	LIST_HEAD(to_be_deleted);
2755 	struct bnx2fc_hba *hba, *next;
2756 	struct fcoe_percpu_s *bg;
2757 	struct task_struct *l2_thread;
2758 	struct sk_buff *skb;
2759 	unsigned int cpu = 0;
2760 
2761 	/*
2762 	 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2763 	 * it will have higher precedence than bnx2fc_dev_lock.
2764 	 * unregister_device() cannot be called with bnx2fc_dev_lock
2765 	 * held.
2766 	 */
2767 	mutex_lock(&bnx2fc_dev_lock);
2768 	list_splice(&adapter_list, &to_be_deleted);
2769 	INIT_LIST_HEAD(&adapter_list);
2770 	adapter_count = 0;
2771 	mutex_unlock(&bnx2fc_dev_lock);
2772 
2773 	/* Unregister with cnic */
2774 	list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2775 		list_del_init(&hba->list);
2776 		printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2777 		       hba);
2778 		bnx2fc_ulp_stop(hba);
2779 		/* unregister cnic device */
2780 		if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2781 				       &hba->reg_with_cnic))
2782 			hba->cnic->unregister_device(hba->cnic,
2783 							 CNIC_ULP_FCOE);
2784 		bnx2fc_hba_destroy(hba);
2785 	}
2786 	cnic_unregister_driver(CNIC_ULP_FCOE);
2787 
2788 	/* Destroy global thread */
2789 	bg = &bnx2fc_global;
2790 	spin_lock_bh(&bg->fcoe_rx_list.lock);
2791 	l2_thread = bg->thread;
2792 	bg->thread = NULL;
2793 	while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2794 		kfree_skb(skb);
2795 
2796 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2797 
2798 	if (l2_thread)
2799 		kthread_stop(l2_thread);
2800 
2801 	cpu_notifier_register_begin();
2802 
2803 	/* Destroy per cpu threads */
2804 	for_each_online_cpu(cpu) {
2805 		bnx2fc_percpu_thread_destroy(cpu);
2806 	}
2807 
2808 	__unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2809 
2810 	cpu_notifier_register_done();
2811 
2812 	destroy_workqueue(bnx2fc_wq);
2813 	/*
2814 	 * detach from scsi transport
2815 	 * must happen after all destroys are done
2816 	 */
2817 	bnx2fc_release_transport();
2818 
2819 	/* detach from fcoe transport */
2820 	fcoe_transport_detach(&bnx2fc_transport);
2821 }
2822 
2823 module_init(bnx2fc_mod_init);
2824 module_exit(bnx2fc_mod_exit);
2825 
2826 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2827 	.set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2828 	.get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2829 	.get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2830 	.get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2831 	.get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2832 	.get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2833 	.get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2834 
2835 	.get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2836 	.get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2837 };
2838 
2839 static struct fc_function_template bnx2fc_transport_function = {
2840 	.show_host_node_name = 1,
2841 	.show_host_port_name = 1,
2842 	.show_host_supported_classes = 1,
2843 	.show_host_supported_fc4s = 1,
2844 	.show_host_active_fc4s = 1,
2845 	.show_host_maxframe_size = 1,
2846 
2847 	.show_host_port_id = 1,
2848 	.show_host_supported_speeds = 1,
2849 	.get_host_speed = fc_get_host_speed,
2850 	.show_host_speed = 1,
2851 	.show_host_port_type = 1,
2852 	.get_host_port_state = fc_get_host_port_state,
2853 	.show_host_port_state = 1,
2854 	.show_host_symbolic_name = 1,
2855 
2856 	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2857 				sizeof(struct bnx2fc_rport)),
2858 	.show_rport_maxframe_size = 1,
2859 	.show_rport_supported_classes = 1,
2860 
2861 	.show_host_fabric_name = 1,
2862 	.show_starget_node_name = 1,
2863 	.show_starget_port_name = 1,
2864 	.show_starget_port_id = 1,
2865 	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2866 	.show_rport_dev_loss_tmo = 1,
2867 	.get_fc_host_stats = bnx2fc_get_host_stats,
2868 
2869 	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2870 
2871 	.terminate_rport_io = fc_rport_terminate_io,
2872 
2873 	.vport_create = bnx2fc_vport_create,
2874 	.vport_delete = bnx2fc_vport_destroy,
2875 	.vport_disable = bnx2fc_vport_disable,
2876 	.bsg_request = fc_lport_bsg_request,
2877 };
2878 
2879 static struct fc_function_template bnx2fc_vport_xport_function = {
2880 	.show_host_node_name = 1,
2881 	.show_host_port_name = 1,
2882 	.show_host_supported_classes = 1,
2883 	.show_host_supported_fc4s = 1,
2884 	.show_host_active_fc4s = 1,
2885 	.show_host_maxframe_size = 1,
2886 
2887 	.show_host_port_id = 1,
2888 	.show_host_supported_speeds = 1,
2889 	.get_host_speed = fc_get_host_speed,
2890 	.show_host_speed = 1,
2891 	.show_host_port_type = 1,
2892 	.get_host_port_state = fc_get_host_port_state,
2893 	.show_host_port_state = 1,
2894 	.show_host_symbolic_name = 1,
2895 
2896 	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2897 				sizeof(struct bnx2fc_rport)),
2898 	.show_rport_maxframe_size = 1,
2899 	.show_rport_supported_classes = 1,
2900 
2901 	.show_host_fabric_name = 1,
2902 	.show_starget_node_name = 1,
2903 	.show_starget_port_name = 1,
2904 	.show_starget_port_id = 1,
2905 	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2906 	.show_rport_dev_loss_tmo = 1,
2907 	.get_fc_host_stats = fc_get_host_stats,
2908 	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2909 	.terminate_rport_io = fc_rport_terminate_io,
2910 	.bsg_request = fc_lport_bsg_request,
2911 };
2912 
2913 /*
2914  * Additional scsi_host attributes.
2915  */
2916 static ssize_t
2917 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
2918 	char *buf)
2919 {
2920 	struct Scsi_Host *shost = class_to_shost(dev);
2921 	struct fc_lport *lport = shost_priv(shost);
2922 	struct fcoe_port *port = lport_priv(lport);
2923 	struct bnx2fc_interface *interface = port->priv;
2924 
2925 	sprintf(buf, "%u\n", interface->tm_timeout);
2926 	return strlen(buf);
2927 }
2928 
2929 static ssize_t
2930 bnx2fc_tm_timeout_store(struct device *dev,
2931 	struct device_attribute *attr, const char *buf, size_t count)
2932 {
2933 	struct Scsi_Host *shost = class_to_shost(dev);
2934 	struct fc_lport *lport = shost_priv(shost);
2935 	struct fcoe_port *port = lport_priv(lport);
2936 	struct bnx2fc_interface *interface = port->priv;
2937 	int rval, val;
2938 
2939 	rval = kstrtouint(buf, 10, &val);
2940 	if (rval)
2941 		return rval;
2942 	if (val > 255)
2943 		return -ERANGE;
2944 
2945 	interface->tm_timeout = (u8)val;
2946 	return strlen(buf);
2947 }
2948 
2949 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
2950 	bnx2fc_tm_timeout_store);
2951 
2952 static struct device_attribute *bnx2fc_host_attrs[] = {
2953 	&dev_attr_tm_timeout,
2954 	NULL,
2955 };
2956 
2957 /**
2958  * scsi_host_template structure used while registering with SCSI-ml
2959  */
2960 static struct scsi_host_template bnx2fc_shost_template = {
2961 	.module			= THIS_MODULE,
2962 	.name			= "QLogic Offload FCoE Initiator",
2963 	.queuecommand		= bnx2fc_queuecommand,
2964 	.eh_abort_handler	= bnx2fc_eh_abort,	  /* abts */
2965 	.eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2966 	.eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2967 	.eh_host_reset_handler	= fc_eh_host_reset,
2968 	.slave_alloc		= fc_slave_alloc,
2969 	.change_queue_depth	= scsi_change_queue_depth,
2970 	.this_id		= -1,
2971 	.cmd_per_lun		= 3,
2972 	.use_clustering		= ENABLE_CLUSTERING,
2973 	.sg_tablesize		= BNX2FC_MAX_BDS_PER_CMD,
2974 	.max_sectors		= 1024,
2975 	.track_queue_depth	= 1,
2976 	.slave_configure	= bnx2fc_slave_configure,
2977 	.shost_attrs		= bnx2fc_host_attrs,
2978 };
2979 
2980 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2981 	.frame_send		= bnx2fc_xmit,
2982 	.elsct_send		= bnx2fc_elsct_send,
2983 	.fcp_abort_io		= bnx2fc_abort_io,
2984 	.fcp_cleanup		= bnx2fc_cleanup,
2985 	.get_lesb		= fcoe_get_lesb,
2986 	.rport_event_callback	= bnx2fc_rport_event_handler,
2987 };
2988 
2989 /**
2990  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2991  *			structure carrying callback function pointers
2992  */
2993 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2994 	.owner			= THIS_MODULE,
2995 	.cnic_init		= bnx2fc_ulp_init,
2996 	.cnic_exit		= bnx2fc_ulp_exit,
2997 	.cnic_start		= bnx2fc_ulp_start,
2998 	.cnic_stop		= bnx2fc_ulp_stop,
2999 	.indicate_kcqes		= bnx2fc_indicate_kcqe,
3000 	.indicate_netevent	= bnx2fc_indicate_netevent,
3001 	.cnic_get_stats		= bnx2fc_ulp_get_stats,
3002 };
3003