1 /* bnx2fc_fcoe.c: QLogic Linux FCoE offload driver.
2  * This file contains the code that interacts with libfc, libfcoe,
3  * cnic modules to create FCoE instances, send/receive non-offloaded
4  * FIP/FCoE packets, listen to link events etc.
5  *
6  * Copyright (c) 2008-2013 Broadcom Corporation
7  * Copyright (c) 2014-2016 QLogic Corporation
8  * Copyright (c) 2016-2017 Cavium Inc.
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation.
13  *
14  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
15  */
16 
17 #include "bnx2fc.h"
18 
19 #include <linux/ethtool.h>
20 
21 static struct list_head adapter_list;
22 static struct list_head if_list;
23 static u32 adapter_count;
24 static DEFINE_MUTEX(bnx2fc_dev_lock);
25 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
26 
27 #define DRV_MODULE_NAME		"bnx2fc"
28 #define DRV_MODULE_VERSION	BNX2FC_VERSION
29 #define DRV_MODULE_RELDATE	"October 15, 2015"
30 
31 
32 static char version[] =
33 		"QLogic FCoE Driver " DRV_MODULE_NAME \
34 		" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
35 
36 
37 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
38 MODULE_DESCRIPTION("QLogic FCoE Driver");
39 MODULE_LICENSE("GPL");
40 MODULE_VERSION(DRV_MODULE_VERSION);
41 
42 #define BNX2FC_MAX_QUEUE_DEPTH	256
43 #define BNX2FC_MIN_QUEUE_DEPTH	32
44 #define FCOE_WORD_TO_BYTE  4
45 
46 static struct scsi_transport_template	*bnx2fc_transport_template;
47 static struct scsi_transport_template	*bnx2fc_vport_xport_template;
48 
49 struct workqueue_struct *bnx2fc_wq;
50 
51 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
52  * Here the io threads are per cpu but the l2 thread is just one
53  */
54 struct fcoe_percpu_s bnx2fc_global;
55 static DEFINE_SPINLOCK(bnx2fc_global_lock);
56 
57 static struct cnic_ulp_ops bnx2fc_cnic_cb;
58 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
59 static struct scsi_host_template bnx2fc_shost_template;
60 static struct fc_function_template bnx2fc_transport_function;
61 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
62 static struct fc_function_template bnx2fc_vport_xport_function;
63 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode);
64 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
65 static int bnx2fc_destroy(struct net_device *net_device);
66 static int bnx2fc_enable(struct net_device *netdev);
67 static int bnx2fc_disable(struct net_device *netdev);
68 
69 /* fcoe_syfs control interface handlers */
70 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
71 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
72 
73 static void bnx2fc_recv_frame(struct sk_buff *skb);
74 
75 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
76 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
77 static int bnx2fc_lport_config(struct fc_lport *lport);
78 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
79 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
80 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
81 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
82 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
83 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
84 				  struct device *parent, int npiv);
85 static void bnx2fc_destroy_work(struct work_struct *work);
86 
87 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
88 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
89 							*phys_dev);
90 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
91 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
92 
93 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
94 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
95 
96 static void bnx2fc_port_shutdown(struct fc_lport *lport);
97 static void bnx2fc_stop(struct bnx2fc_interface *interface);
98 static int __init bnx2fc_mod_init(void);
99 static void __exit bnx2fc_mod_exit(void);
100 
101 unsigned int bnx2fc_debug_level;
102 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
103 MODULE_PARM_DESC(debug_logging,
104 		"Option to enable extended logging,\n"
105 		"\t\tDefault is 0 - no logging.\n"
106 		"\t\t0x01 - SCSI cmd error, cleanup.\n"
107 		"\t\t0x02 - Session setup, cleanup, etc.\n"
108 		"\t\t0x04 - lport events, link, mtu, etc.\n"
109 		"\t\t0x08 - ELS logs.\n"
110 		"\t\t0x10 - fcoe L2 fame related logs.\n"
111 		"\t\t0xff - LOG all messages.");
112 
113 static uint bnx2fc_devloss_tmo;
114 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO);
115 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports "
116 	"attached via bnx2fc.");
117 
118 static uint bnx2fc_max_luns = BNX2FC_MAX_LUN;
119 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO);
120 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default "
121 	"0xffff.");
122 
123 static uint bnx2fc_queue_depth;
124 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO);
125 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices "
126 	"attached via bnx2fc.");
127 
128 static uint bnx2fc_log_fka;
129 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
130 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
131 	"initiating a FIP keep alive when debug logging is enabled.");
132 
133 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
134 {
135 	return ((struct bnx2fc_interface *)
136 		((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
137 }
138 
139 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
140 {
141 	struct fcoe_ctlr_device *ctlr_dev =
142 		fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
143 	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
144 	struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
145 
146 	fcf_dev->vlan_id = fcoe->vlan_id;
147 }
148 
149 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
150 {
151 	struct fcoe_percpu_s *bg;
152 	struct fcoe_rcv_info *fr;
153 	struct sk_buff_head *list;
154 	struct sk_buff *skb, *next;
155 
156 	bg = &bnx2fc_global;
157 	spin_lock_bh(&bg->fcoe_rx_list.lock);
158 	list = &bg->fcoe_rx_list;
159 	skb_queue_walk_safe(list, skb, next) {
160 		fr = fcoe_dev_from_skb(skb);
161 		if (fr->fr_dev == lp) {
162 			__skb_unlink(skb, list);
163 			kfree_skb(skb);
164 		}
165 	}
166 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
167 }
168 
169 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
170 {
171 	int rc;
172 	spin_lock(&bnx2fc_global_lock);
173 	rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
174 	spin_unlock(&bnx2fc_global_lock);
175 
176 	return rc;
177 }
178 
179 static void bnx2fc_abort_io(struct fc_lport *lport)
180 {
181 	/*
182 	 * This function is no-op for bnx2fc, but we do
183 	 * not want to leave it as NULL either, as libfc
184 	 * can call the default function which is
185 	 * fc_fcp_abort_io.
186 	 */
187 }
188 
189 static void bnx2fc_cleanup(struct fc_lport *lport)
190 {
191 	struct fcoe_port *port = lport_priv(lport);
192 	struct bnx2fc_interface *interface = port->priv;
193 	struct bnx2fc_hba *hba = interface->hba;
194 	struct bnx2fc_rport *tgt;
195 	int i;
196 
197 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
198 	mutex_lock(&hba->hba_mutex);
199 	spin_lock_bh(&hba->hba_lock);
200 	for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
201 		tgt = hba->tgt_ofld_list[i];
202 		if (tgt) {
203 			/* Cleanup IOs belonging to requested vport */
204 			if (tgt->port == port) {
205 				spin_unlock_bh(&hba->hba_lock);
206 				BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
207 				bnx2fc_flush_active_ios(tgt);
208 				spin_lock_bh(&hba->hba_lock);
209 			}
210 		}
211 	}
212 	spin_unlock_bh(&hba->hba_lock);
213 	mutex_unlock(&hba->hba_mutex);
214 }
215 
216 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
217 			     struct fc_frame *fp)
218 {
219 	struct fc_rport_priv *rdata = tgt->rdata;
220 	struct fc_frame_header *fh;
221 	int rc = 0;
222 
223 	fh = fc_frame_header_get(fp);
224 	BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
225 			"r_ctl = 0x%x\n", rdata->ids.port_id,
226 			ntohs(fh->fh_ox_id), fh->fh_r_ctl);
227 	if ((fh->fh_type == FC_TYPE_ELS) &&
228 	    (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
229 
230 		switch (fc_frame_payload_op(fp)) {
231 		case ELS_ADISC:
232 			rc = bnx2fc_send_adisc(tgt, fp);
233 			break;
234 		case ELS_LOGO:
235 			rc = bnx2fc_send_logo(tgt, fp);
236 			break;
237 		case ELS_RLS:
238 			rc = bnx2fc_send_rls(tgt, fp);
239 			break;
240 		default:
241 			break;
242 		}
243 	} else if ((fh->fh_type ==  FC_TYPE_BLS) &&
244 	    (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
245 		BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
246 	else {
247 		BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
248 				"rctl 0x%x thru non-offload path\n",
249 				fh->fh_type, fh->fh_r_ctl);
250 		return -ENODEV;
251 	}
252 	if (rc)
253 		return -ENOMEM;
254 	else
255 		return 0;
256 }
257 
258 /**
259  * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
260  *
261  * @lport:	the associated local port
262  * @fp:	the fc_frame to be transmitted
263  */
264 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
265 {
266 	struct ethhdr		*eh;
267 	struct fcoe_crc_eof	*cp;
268 	struct sk_buff		*skb;
269 	struct fc_frame_header	*fh;
270 	struct bnx2fc_interface	*interface;
271 	struct fcoe_ctlr        *ctlr;
272 	struct bnx2fc_hba *hba;
273 	struct fcoe_port	*port;
274 	struct fcoe_hdr		*hp;
275 	struct bnx2fc_rport	*tgt;
276 	struct fc_stats		*stats;
277 	u8			sof, eof;
278 	u32			crc;
279 	unsigned int		hlen, tlen, elen;
280 	int			wlen, rc = 0;
281 
282 	port = (struct fcoe_port *)lport_priv(lport);
283 	interface = port->priv;
284 	ctlr = bnx2fc_to_ctlr(interface);
285 	hba = interface->hba;
286 
287 	fh = fc_frame_header_get(fp);
288 
289 	skb = fp_skb(fp);
290 	if (!lport->link_up) {
291 		BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
292 		kfree_skb(skb);
293 		return 0;
294 	}
295 
296 	if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
297 		if (!ctlr->sel_fcf) {
298 			BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
299 			kfree_skb(skb);
300 			return -EINVAL;
301 		}
302 		if (fcoe_ctlr_els_send(ctlr, lport, skb))
303 			return 0;
304 	}
305 
306 	sof = fr_sof(fp);
307 	eof = fr_eof(fp);
308 
309 	/*
310 	 * Snoop the frame header to check if the frame is for
311 	 * an offloaded session
312 	 */
313 	/*
314 	 * tgt_ofld_list access is synchronized using
315 	 * both hba mutex and hba lock. Atleast hba mutex or
316 	 * hba lock needs to be held for read access.
317 	 */
318 
319 	spin_lock_bh(&hba->hba_lock);
320 	tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
321 	if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
322 		/* This frame is for offloaded session */
323 		BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
324 				"port_id = 0x%x\n", ntoh24(fh->fh_d_id));
325 		spin_unlock_bh(&hba->hba_lock);
326 		rc = bnx2fc_xmit_l2_frame(tgt, fp);
327 		if (rc != -ENODEV) {
328 			kfree_skb(skb);
329 			return rc;
330 		}
331 	} else {
332 		spin_unlock_bh(&hba->hba_lock);
333 	}
334 
335 	elen = sizeof(struct ethhdr);
336 	hlen = sizeof(struct fcoe_hdr);
337 	tlen = sizeof(struct fcoe_crc_eof);
338 	wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
339 
340 	skb->ip_summed = CHECKSUM_NONE;
341 	crc = fcoe_fc_crc(fp);
342 
343 	/* copy port crc and eof to the skb buff */
344 	if (skb_is_nonlinear(skb)) {
345 		skb_frag_t *frag;
346 		if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
347 			kfree_skb(skb);
348 			return -ENOMEM;
349 		}
350 		frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
351 		cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
352 	} else {
353 		cp = skb_put(skb, tlen);
354 	}
355 
356 	memset(cp, 0, sizeof(*cp));
357 	cp->fcoe_eof = eof;
358 	cp->fcoe_crc32 = cpu_to_le32(~crc);
359 	if (skb_is_nonlinear(skb)) {
360 		kunmap_atomic(cp);
361 		cp = NULL;
362 	}
363 
364 	/* adjust skb network/transport offsets to match mac/fcoe/port */
365 	skb_push(skb, elen + hlen);
366 	skb_reset_mac_header(skb);
367 	skb_reset_network_header(skb);
368 	skb->mac_len = elen;
369 	skb->protocol = htons(ETH_P_FCOE);
370 	skb->dev = interface->netdev;
371 
372 	/* fill up mac and fcoe headers */
373 	eh = eth_hdr(skb);
374 	eh->h_proto = htons(ETH_P_FCOE);
375 	if (ctlr->map_dest)
376 		fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
377 	else
378 		/* insert GW address */
379 		memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
380 
381 	if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
382 		memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
383 	else
384 		memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
385 
386 	hp = (struct fcoe_hdr *)(eh + 1);
387 	memset(hp, 0, sizeof(*hp));
388 	if (FC_FCOE_VER)
389 		FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
390 	hp->fcoe_sof = sof;
391 
392 	/* fcoe lso, mss is in max_payload which is non-zero for FCP data */
393 	if (lport->seq_offload && fr_max_payload(fp)) {
394 		skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
395 		skb_shinfo(skb)->gso_size = fr_max_payload(fp);
396 	} else {
397 		skb_shinfo(skb)->gso_type = 0;
398 		skb_shinfo(skb)->gso_size = 0;
399 	}
400 
401 	/*update tx stats */
402 	stats = per_cpu_ptr(lport->stats, get_cpu());
403 	stats->TxFrames++;
404 	stats->TxWords += wlen;
405 	put_cpu();
406 
407 	/* send down to lld */
408 	fr_dev(fp) = lport;
409 	if (port->fcoe_pending_queue.qlen)
410 		fcoe_check_wait_queue(lport, skb);
411 	else if (fcoe_start_io(skb))
412 		fcoe_check_wait_queue(lport, skb);
413 
414 	return 0;
415 }
416 
417 /**
418  * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
419  *
420  * @skb:	the receive socket buffer
421  * @dev:	associated net device
422  * @ptype:	context
423  * @olddev:	last device
424  *
425  * This function receives the packet and builds FC frame and passes it up
426  */
427 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
428 		struct packet_type *ptype, struct net_device *olddev)
429 {
430 	struct fc_lport *lport;
431 	struct bnx2fc_interface *interface;
432 	struct fcoe_ctlr *ctlr;
433 	struct fcoe_rcv_info *fr;
434 	struct fcoe_percpu_s *bg;
435 	struct sk_buff *tmp_skb;
436 
437 	interface = container_of(ptype, struct bnx2fc_interface,
438 				 fcoe_packet_type);
439 	ctlr = bnx2fc_to_ctlr(interface);
440 	lport = ctlr->lp;
441 
442 	if (unlikely(lport == NULL)) {
443 		printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
444 		goto err;
445 	}
446 
447 	tmp_skb = skb_share_check(skb, GFP_ATOMIC);
448 	if (!tmp_skb)
449 		goto err;
450 
451 	skb = tmp_skb;
452 
453 	if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
454 		printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
455 		goto err;
456 	}
457 
458 	/*
459 	 * Check for minimum frame length, and make sure required FCoE
460 	 * and FC headers are pulled into the linear data area.
461 	 */
462 	if (unlikely((skb->len < FCOE_MIN_FRAME) ||
463 	    !pskb_may_pull(skb, FCOE_HEADER_LEN)))
464 		goto err;
465 
466 	skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
467 
468 	fr = fcoe_dev_from_skb(skb);
469 	fr->fr_dev = lport;
470 
471 	bg = &bnx2fc_global;
472 	spin_lock(&bg->fcoe_rx_list.lock);
473 
474 	__skb_queue_tail(&bg->fcoe_rx_list, skb);
475 	if (bg->fcoe_rx_list.qlen == 1)
476 		wake_up_process(bg->kthread);
477 
478 	spin_unlock(&bg->fcoe_rx_list.lock);
479 
480 	return 0;
481 err:
482 	kfree_skb(skb);
483 	return -1;
484 }
485 
486 static int bnx2fc_l2_rcv_thread(void *arg)
487 {
488 	struct fcoe_percpu_s *bg = arg;
489 	struct sk_buff *skb;
490 
491 	set_user_nice(current, MIN_NICE);
492 	set_current_state(TASK_INTERRUPTIBLE);
493 	while (!kthread_should_stop()) {
494 		schedule();
495 		spin_lock_bh(&bg->fcoe_rx_list.lock);
496 		while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
497 			spin_unlock_bh(&bg->fcoe_rx_list.lock);
498 			bnx2fc_recv_frame(skb);
499 			spin_lock_bh(&bg->fcoe_rx_list.lock);
500 		}
501 		__set_current_state(TASK_INTERRUPTIBLE);
502 		spin_unlock_bh(&bg->fcoe_rx_list.lock);
503 	}
504 	__set_current_state(TASK_RUNNING);
505 	return 0;
506 }
507 
508 
509 static void bnx2fc_recv_frame(struct sk_buff *skb)
510 {
511 	u32 fr_len;
512 	struct fc_lport *lport;
513 	struct fcoe_rcv_info *fr;
514 	struct fc_stats *stats;
515 	struct fc_frame_header *fh;
516 	struct fcoe_crc_eof crc_eof;
517 	struct fc_frame *fp;
518 	struct fc_lport *vn_port;
519 	struct fcoe_port *port, *phys_port;
520 	u8 *mac = NULL;
521 	u8 *dest_mac = NULL;
522 	struct fcoe_hdr *hp;
523 	struct bnx2fc_interface *interface;
524 	struct fcoe_ctlr *ctlr;
525 
526 	fr = fcoe_dev_from_skb(skb);
527 	lport = fr->fr_dev;
528 	if (unlikely(lport == NULL)) {
529 		printk(KERN_ERR PFX "Invalid lport struct\n");
530 		kfree_skb(skb);
531 		return;
532 	}
533 
534 	if (skb_is_nonlinear(skb))
535 		skb_linearize(skb);
536 	mac = eth_hdr(skb)->h_source;
537 	dest_mac = eth_hdr(skb)->h_dest;
538 
539 	/* Pull the header */
540 	hp = (struct fcoe_hdr *) skb_network_header(skb);
541 	fh = (struct fc_frame_header *) skb_transport_header(skb);
542 	skb_pull(skb, sizeof(struct fcoe_hdr));
543 	fr_len = skb->len - sizeof(struct fcoe_crc_eof);
544 
545 	fp = (struct fc_frame *)skb;
546 	fc_frame_init(fp);
547 	fr_dev(fp) = lport;
548 	fr_sof(fp) = hp->fcoe_sof;
549 	if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
550 		kfree_skb(skb);
551 		return;
552 	}
553 	fr_eof(fp) = crc_eof.fcoe_eof;
554 	fr_crc(fp) = crc_eof.fcoe_crc32;
555 	if (pskb_trim(skb, fr_len)) {
556 		kfree_skb(skb);
557 		return;
558 	}
559 
560 	phys_port = lport_priv(lport);
561 	interface = phys_port->priv;
562 	ctlr = bnx2fc_to_ctlr(interface);
563 
564 	fh = fc_frame_header_get(fp);
565 
566 	if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
567 		BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n",
568 		    dest_mac);
569 		kfree_skb(skb);
570 		return;
571 	}
572 
573 	vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
574 	if (vn_port) {
575 		port = lport_priv(vn_port);
576 		if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
577 			BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
578 			kfree_skb(skb);
579 			return;
580 		}
581 	}
582 	if (ctlr->state) {
583 		if (!ether_addr_equal(mac, ctlr->dest_addr)) {
584 			BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n",
585 			    mac, ctlr->dest_addr);
586 			kfree_skb(skb);
587 			return;
588 		}
589 	}
590 	if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
591 	    fh->fh_type == FC_TYPE_FCP) {
592 		/* Drop FCP data. We dont this in L2 path */
593 		kfree_skb(skb);
594 		return;
595 	}
596 	if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
597 	    fh->fh_type == FC_TYPE_ELS) {
598 		switch (fc_frame_payload_op(fp)) {
599 		case ELS_LOGO:
600 			if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
601 				/* drop non-FIP LOGO */
602 				kfree_skb(skb);
603 				return;
604 			}
605 			break;
606 		}
607 	}
608 
609 	if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
610 		/* Drop incoming ABTS */
611 		kfree_skb(skb);
612 		return;
613 	}
614 
615 	/*
616 	 * If the destination ID from the frame header does not match what we
617 	 * have on record for lport and the search for a NPIV port came up
618 	 * empty then this is not addressed to our port so simply drop it.
619 	 */
620 	if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
621 		BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
622 		    lport->port_id, ntoh24(fh->fh_d_id));
623 		kfree_skb(skb);
624 		return;
625 	}
626 
627 	stats = per_cpu_ptr(lport->stats, smp_processor_id());
628 	stats->RxFrames++;
629 	stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
630 
631 	if (le32_to_cpu(fr_crc(fp)) !=
632 			~crc32(~0, skb->data, fr_len)) {
633 		if (stats->InvalidCRCCount < 5)
634 			printk(KERN_WARNING PFX "dropping frame with "
635 			       "CRC error\n");
636 		stats->InvalidCRCCount++;
637 		kfree_skb(skb);
638 		return;
639 	}
640 	fc_exch_recv(lport, fp);
641 }
642 
643 /**
644  * bnx2fc_percpu_io_thread - thread per cpu for ios
645  *
646  * @arg:	ptr to bnx2fc_percpu_info structure
647  */
648 static int bnx2fc_percpu_io_thread(void *arg)
649 {
650 	struct bnx2fc_percpu_s *p = arg;
651 	struct bnx2fc_work *work, *tmp;
652 	LIST_HEAD(work_list);
653 
654 	set_user_nice(current, MIN_NICE);
655 	set_current_state(TASK_INTERRUPTIBLE);
656 	while (!kthread_should_stop()) {
657 		schedule();
658 		spin_lock_bh(&p->fp_work_lock);
659 		while (!list_empty(&p->work_list)) {
660 			list_splice_init(&p->work_list, &work_list);
661 			spin_unlock_bh(&p->fp_work_lock);
662 
663 			list_for_each_entry_safe(work, tmp, &work_list, list) {
664 				list_del_init(&work->list);
665 				bnx2fc_process_cq_compl(work->tgt, work->wqe,
666 							work->rq_data,
667 							work->num_rq,
668 							work->task);
669 				kfree(work);
670 			}
671 
672 			spin_lock_bh(&p->fp_work_lock);
673 		}
674 		__set_current_state(TASK_INTERRUPTIBLE);
675 		spin_unlock_bh(&p->fp_work_lock);
676 	}
677 	__set_current_state(TASK_RUNNING);
678 
679 	return 0;
680 }
681 
682 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
683 {
684 	struct fc_host_statistics *bnx2fc_stats;
685 	struct fc_lport *lport = shost_priv(shost);
686 	struct fcoe_port *port = lport_priv(lport);
687 	struct bnx2fc_interface *interface = port->priv;
688 	struct bnx2fc_hba *hba = interface->hba;
689 	struct fcoe_statistics_params *fw_stats;
690 	int rc = 0;
691 
692 	fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
693 	if (!fw_stats)
694 		return NULL;
695 
696 	mutex_lock(&hba->hba_stats_mutex);
697 
698 	bnx2fc_stats = fc_get_host_stats(shost);
699 
700 	init_completion(&hba->stat_req_done);
701 	if (bnx2fc_send_stat_req(hba))
702 		goto unlock_stats_mutex;
703 	rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
704 	if (!rc) {
705 		BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
706 		goto unlock_stats_mutex;
707 	}
708 	BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
709 	bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
710 	BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
711 	bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
712 	BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
713 	bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
714 	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
715 	bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
716 	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
717 	bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
718 
719 	bnx2fc_stats->dumped_frames = 0;
720 	bnx2fc_stats->lip_count = 0;
721 	bnx2fc_stats->nos_count = 0;
722 	bnx2fc_stats->loss_of_sync_count = 0;
723 	bnx2fc_stats->loss_of_signal_count = 0;
724 	bnx2fc_stats->prim_seq_protocol_err_count = 0;
725 
726 	memcpy(&hba->prev_stats, hba->stats_buffer,
727 	       sizeof(struct fcoe_statistics_params));
728 
729 unlock_stats_mutex:
730 	mutex_unlock(&hba->hba_stats_mutex);
731 	return bnx2fc_stats;
732 }
733 
734 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
735 {
736 	struct fcoe_port *port = lport_priv(lport);
737 	struct bnx2fc_interface *interface = port->priv;
738 	struct bnx2fc_hba *hba = interface->hba;
739 	struct Scsi_Host *shost = lport->host;
740 	int rc = 0;
741 
742 	shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
743 	shost->max_lun = bnx2fc_max_luns;
744 	shost->max_id = BNX2FC_MAX_FCP_TGT;
745 	shost->max_channel = 0;
746 	if (lport->vport)
747 		shost->transportt = bnx2fc_vport_xport_template;
748 	else
749 		shost->transportt = bnx2fc_transport_template;
750 
751 	/* Add the new host to SCSI-ml */
752 	rc = scsi_add_host(lport->host, dev);
753 	if (rc) {
754 		printk(KERN_ERR PFX "Error on scsi_add_host\n");
755 		return rc;
756 	}
757 	if (!lport->vport)
758 		fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
759 	snprintf(fc_host_symbolic_name(lport->host), 256,
760 		 "%s (QLogic %s) v%s over %s",
761 		BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
762 		interface->netdev->name);
763 
764 	return 0;
765 }
766 
767 static int bnx2fc_link_ok(struct fc_lport *lport)
768 {
769 	struct fcoe_port *port = lport_priv(lport);
770 	struct bnx2fc_interface *interface = port->priv;
771 	struct bnx2fc_hba *hba = interface->hba;
772 	struct net_device *dev = hba->phys_dev;
773 	int rc = 0;
774 
775 	if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
776 		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
777 	else {
778 		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
779 		rc = -1;
780 	}
781 	return rc;
782 }
783 
784 /**
785  * bnx2fc_get_link_state - get network link state
786  *
787  * @hba:	adapter instance pointer
788  *
789  * updates adapter structure flag based on netdev state
790  */
791 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
792 {
793 	if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
794 		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
795 	else
796 		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
797 }
798 
799 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
800 {
801 	struct bnx2fc_hba *hba;
802 	struct bnx2fc_interface *interface;
803 	struct fcoe_ctlr *ctlr;
804 	struct fcoe_port *port;
805 	u64 wwnn, wwpn;
806 
807 	port = lport_priv(lport);
808 	interface = port->priv;
809 	ctlr = bnx2fc_to_ctlr(interface);
810 	hba = interface->hba;
811 
812 	/* require support for get_pauseparam ethtool op. */
813 	if (!hba->phys_dev->ethtool_ops ||
814 	    !hba->phys_dev->ethtool_ops->get_pauseparam)
815 		return -EOPNOTSUPP;
816 
817 	if (fc_set_mfs(lport, BNX2FC_MFS))
818 		return -EINVAL;
819 
820 	skb_queue_head_init(&port->fcoe_pending_queue);
821 	port->fcoe_pending_queue_active = 0;
822 	timer_setup(&port->timer, fcoe_queue_timer, 0);
823 
824 	fcoe_link_speed_update(lport);
825 
826 	if (!lport->vport) {
827 		if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
828 			wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
829 						 1, 0);
830 		BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
831 		fc_set_wwnn(lport, wwnn);
832 
833 		if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
834 			wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
835 						 2, 0);
836 
837 		BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
838 		fc_set_wwpn(lport, wwpn);
839 	}
840 
841 	return 0;
842 }
843 
844 static void bnx2fc_destroy_timer(struct timer_list *t)
845 {
846 	struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer);
847 
848 	printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
849 	       "Destroy compl not received!!\n");
850 	set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
851 	wake_up_interruptible(&hba->destroy_wait);
852 }
853 
854 /**
855  * bnx2fc_indicate_netevent - Generic netdev event handler
856  *
857  * @context:	adapter structure pointer
858  * @event:	event type
859  * @vlan_id:	vlan id - associated vlan id with this event
860  *
861  * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
862  * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
863  */
864 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
865 				     u16 vlan_id)
866 {
867 	struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
868 	struct fcoe_ctlr_device *cdev;
869 	struct fc_lport *lport;
870 	struct fc_lport *vport;
871 	struct bnx2fc_interface *interface, *tmp;
872 	struct fcoe_ctlr *ctlr;
873 	int wait_for_upload = 0;
874 	u32 link_possible = 1;
875 
876 	if (vlan_id != 0 && event != NETDEV_UNREGISTER)
877 		return;
878 
879 	switch (event) {
880 	case NETDEV_UP:
881 		if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
882 			printk(KERN_ERR "indicate_netevent: "\
883 					"hba is not UP!!\n");
884 		break;
885 
886 	case NETDEV_DOWN:
887 		clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
888 		clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
889 		link_possible = 0;
890 		break;
891 
892 	case NETDEV_GOING_DOWN:
893 		set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
894 		link_possible = 0;
895 		break;
896 
897 	case NETDEV_CHANGE:
898 		break;
899 
900 	case NETDEV_UNREGISTER:
901 		if (!vlan_id)
902 			return;
903 		mutex_lock(&bnx2fc_dev_lock);
904 		list_for_each_entry_safe(interface, tmp, &if_list, list) {
905 			if (interface->hba == hba &&
906 			    interface->vlan_id == (vlan_id & VLAN_VID_MASK))
907 				__bnx2fc_destroy(interface);
908 		}
909 		mutex_unlock(&bnx2fc_dev_lock);
910 
911 		/* Ensure ALL destroy work has been completed before return */
912 		flush_workqueue(bnx2fc_wq);
913 		return;
914 
915 	default:
916 		return;
917 	}
918 
919 	mutex_lock(&bnx2fc_dev_lock);
920 	list_for_each_entry(interface, &if_list, list) {
921 
922 		if (interface->hba != hba)
923 			continue;
924 
925 		ctlr = bnx2fc_to_ctlr(interface);
926 		lport = ctlr->lp;
927 		BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
928 				interface->netdev->name, event);
929 
930 		fcoe_link_speed_update(lport);
931 
932 		cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
933 
934 		if (link_possible && !bnx2fc_link_ok(lport)) {
935 			switch (cdev->enabled) {
936 			case FCOE_CTLR_DISABLED:
937 				pr_info("Link up while interface is disabled.\n");
938 				break;
939 			case FCOE_CTLR_ENABLED:
940 			case FCOE_CTLR_UNUSED:
941 				/* Reset max recv frame size to default */
942 				fc_set_mfs(lport, BNX2FC_MFS);
943 				/*
944 				 * ctlr link up will only be handled during
945 				 * enable to avoid sending discovery
946 				 * solicitation on a stale vlan
947 				 */
948 				if (interface->enabled)
949 					fcoe_ctlr_link_up(ctlr);
950 			}
951 		} else if (fcoe_ctlr_link_down(ctlr)) {
952 			switch (cdev->enabled) {
953 			case FCOE_CTLR_DISABLED:
954 				pr_info("Link down while interface is disabled.\n");
955 				break;
956 			case FCOE_CTLR_ENABLED:
957 			case FCOE_CTLR_UNUSED:
958 				mutex_lock(&lport->lp_mutex);
959 				list_for_each_entry(vport, &lport->vports, list)
960 					fc_host_port_type(vport->host) =
961 					FC_PORTTYPE_UNKNOWN;
962 				mutex_unlock(&lport->lp_mutex);
963 				fc_host_port_type(lport->host) =
964 					FC_PORTTYPE_UNKNOWN;
965 				per_cpu_ptr(lport->stats,
966 					    get_cpu())->LinkFailureCount++;
967 				put_cpu();
968 				fcoe_clean_pending_queue(lport);
969 				wait_for_upload = 1;
970 			}
971 		}
972 	}
973 	mutex_unlock(&bnx2fc_dev_lock);
974 
975 	if (wait_for_upload) {
976 		clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
977 		init_waitqueue_head(&hba->shutdown_wait);
978 		BNX2FC_MISC_DBG("indicate_netevent "
979 				"num_ofld_sess = %d\n",
980 				hba->num_ofld_sess);
981 		hba->wait_for_link_down = 1;
982 		wait_event_interruptible(hba->shutdown_wait,
983 					 (hba->num_ofld_sess == 0));
984 		BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
985 				hba->num_ofld_sess);
986 		hba->wait_for_link_down = 0;
987 
988 		if (signal_pending(current))
989 			flush_signals(current);
990 	}
991 }
992 
993 static int bnx2fc_libfc_config(struct fc_lport *lport)
994 {
995 
996 	/* Set the function pointers set by bnx2fc driver */
997 	memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
998 		sizeof(struct libfc_function_template));
999 	fc_elsct_init(lport);
1000 	fc_exch_init(lport);
1001 	fc_disc_init(lport);
1002 	fc_disc_config(lport, lport);
1003 	return 0;
1004 }
1005 
1006 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
1007 {
1008 	int fcoe_min_xid, fcoe_max_xid;
1009 
1010 	fcoe_min_xid = hba->max_xid + 1;
1011 	if (nr_cpu_ids <= 2)
1012 		fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
1013 	else
1014 		fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
1015 	if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
1016 			       fcoe_max_xid, NULL)) {
1017 		printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
1018 		return -ENOMEM;
1019 	}
1020 
1021 	return 0;
1022 }
1023 
1024 static int bnx2fc_lport_config(struct fc_lport *lport)
1025 {
1026 	lport->link_up = 0;
1027 	lport->qfull = 0;
1028 	lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
1029 	lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
1030 	lport->e_d_tov = 2 * 1000;
1031 	lport->r_a_tov = 10 * 1000;
1032 
1033 	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1034 				FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1035 	lport->does_npiv = 1;
1036 
1037 	memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1038 	lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1039 
1040 	/* alloc stats structure */
1041 	if (fc_lport_init_stats(lport))
1042 		return -ENOMEM;
1043 
1044 	/* Finish fc_lport configuration */
1045 	fc_lport_config(lport);
1046 
1047 	return 0;
1048 }
1049 
1050 /**
1051  * bnx2fc_fip_recv - handle a received FIP frame.
1052  *
1053  * @skb: the received skb
1054  * @dev: associated &net_device
1055  * @ptype: the &packet_type structure which was used to register this handler.
1056  * @orig_dev: original receive &net_device, in case @ dev is a bond.
1057  *
1058  * Returns: 0 for success
1059  */
1060 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1061 			   struct packet_type *ptype,
1062 			   struct net_device *orig_dev)
1063 {
1064 	struct bnx2fc_interface *interface;
1065 	struct fcoe_ctlr *ctlr;
1066 	interface = container_of(ptype, struct bnx2fc_interface,
1067 				 fip_packet_type);
1068 	ctlr = bnx2fc_to_ctlr(interface);
1069 	fcoe_ctlr_recv(ctlr, skb);
1070 	return 0;
1071 }
1072 
1073 /**
1074  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1075  *
1076  * @lport: The local port
1077  * @addr: Location of data to copy
1078  *
1079  * Remove any previously-set unicast MAC filter.
1080  * Add secondary FCoE MAC address filter for our OUI.
1081  */
1082 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1083 {
1084 	struct fcoe_port *port = lport_priv(lport);
1085 
1086 	memcpy(port->data_src_addr, addr, ETH_ALEN);
1087 }
1088 
1089 /**
1090  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1091  *
1092  * @lport: libfc port
1093  */
1094 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1095 {
1096 	struct fcoe_port *port;
1097 
1098 	port = (struct fcoe_port *)lport_priv(lport);
1099 	return port->data_src_addr;
1100 }
1101 
1102 /**
1103  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1104  *
1105  * @fip: FCoE controller.
1106  * @skb: FIP Packet.
1107  */
1108 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1109 {
1110 	struct fip_header *fiph;
1111 	struct ethhdr *eth_hdr;
1112 	u16 op;
1113 	u8 sub;
1114 
1115 	fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
1116 	eth_hdr = (struct ethhdr *)skb_mac_header(skb);
1117 	op = ntohs(fiph->fip_op);
1118 	sub = fiph->fip_subcode;
1119 
1120 	if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
1121 		BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
1122 		    eth_hdr->h_source, eth_hdr->h_dest);
1123 
1124 	skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1125 	dev_queue_xmit(skb);
1126 }
1127 
1128 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1129 {
1130 	struct Scsi_Host *shost = vport_to_shost(vport);
1131 	struct fc_lport *n_port = shost_priv(shost);
1132 	struct fcoe_port *port = lport_priv(n_port);
1133 	struct bnx2fc_interface *interface = port->priv;
1134 	struct net_device *netdev = interface->netdev;
1135 	struct fc_lport *vn_port;
1136 	int rc;
1137 	char buf[32];
1138 
1139 	rc = fcoe_validate_vport_create(vport);
1140 	if (rc) {
1141 		fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1142 		printk(KERN_ERR PFX "Failed to create vport, "
1143 		       "WWPN (0x%s) already exists\n",
1144 		       buf);
1145 		return rc;
1146 	}
1147 
1148 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1149 		printk(KERN_ERR PFX "vn ports cannot be created on"
1150 			"this interface\n");
1151 		return -EIO;
1152 	}
1153 	rtnl_lock();
1154 	mutex_lock(&bnx2fc_dev_lock);
1155 	vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1156 	mutex_unlock(&bnx2fc_dev_lock);
1157 	rtnl_unlock();
1158 
1159 	if (!vn_port) {
1160 		printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1161 			netdev->name);
1162 		return -EIO;
1163 	}
1164 
1165 	if (bnx2fc_devloss_tmo)
1166 		fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
1167 
1168 	if (disabled) {
1169 		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1170 	} else {
1171 		vn_port->boot_time = jiffies;
1172 		fc_lport_init(vn_port);
1173 		fc_fabric_login(vn_port);
1174 		fc_vport_setlink(vn_port);
1175 	}
1176 	return 0;
1177 }
1178 
1179 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1180 {
1181 	struct bnx2fc_lport *blport, *tmp;
1182 
1183 	spin_lock_bh(&hba->hba_lock);
1184 	list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1185 		if (blport->lport == lport) {
1186 			list_del(&blport->list);
1187 			kfree(blport);
1188 		}
1189 	}
1190 	spin_unlock_bh(&hba->hba_lock);
1191 }
1192 
1193 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1194 {
1195 	struct Scsi_Host *shost = vport_to_shost(vport);
1196 	struct fc_lport *n_port = shost_priv(shost);
1197 	struct fc_lport *vn_port = vport->dd_data;
1198 	struct fcoe_port *port = lport_priv(vn_port);
1199 	struct bnx2fc_interface *interface = port->priv;
1200 	struct fc_lport *v_port;
1201 	bool found = false;
1202 
1203 	mutex_lock(&n_port->lp_mutex);
1204 	list_for_each_entry(v_port, &n_port->vports, list)
1205 		if (v_port->vport == vport) {
1206 			found = true;
1207 			break;
1208 		}
1209 
1210 	if (!found) {
1211 		mutex_unlock(&n_port->lp_mutex);
1212 		return -ENOENT;
1213 	}
1214 	list_del(&vn_port->list);
1215 	mutex_unlock(&n_port->lp_mutex);
1216 	bnx2fc_free_vport(interface->hba, port->lport);
1217 	bnx2fc_port_shutdown(port->lport);
1218 	bnx2fc_interface_put(interface);
1219 	queue_work(bnx2fc_wq, &port->destroy_work);
1220 	return 0;
1221 }
1222 
1223 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1224 {
1225 	struct fc_lport *lport = vport->dd_data;
1226 
1227 	if (disable) {
1228 		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1229 		fc_fabric_logoff(lport);
1230 	} else {
1231 		lport->boot_time = jiffies;
1232 		fc_fabric_login(lport);
1233 		fc_vport_setlink(lport);
1234 	}
1235 	return 0;
1236 }
1237 
1238 
1239 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1240 {
1241 	struct net_device *netdev = interface->netdev;
1242 	struct net_device *physdev = interface->hba->phys_dev;
1243 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1244 	struct netdev_hw_addr *ha;
1245 	int sel_san_mac = 0;
1246 
1247 	/* setup Source MAC Address */
1248 	rcu_read_lock();
1249 	for_each_dev_addr(physdev, ha) {
1250 		BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1251 				ha->type);
1252 		printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1253 				ha->addr[1], ha->addr[2], ha->addr[3],
1254 				ha->addr[4], ha->addr[5]);
1255 
1256 		if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1257 		    (is_valid_ether_addr(ha->addr))) {
1258 			memcpy(ctlr->ctl_src_addr, ha->addr,
1259 			       ETH_ALEN);
1260 			sel_san_mac = 1;
1261 			BNX2FC_MISC_DBG("Found SAN MAC\n");
1262 		}
1263 	}
1264 	rcu_read_unlock();
1265 
1266 	if (!sel_san_mac)
1267 		return -ENODEV;
1268 
1269 	interface->fip_packet_type.func = bnx2fc_fip_recv;
1270 	interface->fip_packet_type.type = htons(ETH_P_FIP);
1271 	interface->fip_packet_type.dev = netdev;
1272 	dev_add_pack(&interface->fip_packet_type);
1273 
1274 	interface->fcoe_packet_type.func = bnx2fc_rcv;
1275 	interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1276 	interface->fcoe_packet_type.dev = netdev;
1277 	dev_add_pack(&interface->fcoe_packet_type);
1278 
1279 	return 0;
1280 }
1281 
1282 static int bnx2fc_attach_transport(void)
1283 {
1284 	bnx2fc_transport_template =
1285 		fc_attach_transport(&bnx2fc_transport_function);
1286 
1287 	if (bnx2fc_transport_template == NULL) {
1288 		printk(KERN_ERR PFX "Failed to attach FC transport\n");
1289 		return -ENODEV;
1290 	}
1291 
1292 	bnx2fc_vport_xport_template =
1293 		fc_attach_transport(&bnx2fc_vport_xport_function);
1294 	if (bnx2fc_vport_xport_template == NULL) {
1295 		printk(KERN_ERR PFX
1296 		       "Failed to attach FC transport for vport\n");
1297 		fc_release_transport(bnx2fc_transport_template);
1298 		bnx2fc_transport_template = NULL;
1299 		return -ENODEV;
1300 	}
1301 	return 0;
1302 }
1303 static void bnx2fc_release_transport(void)
1304 {
1305 	fc_release_transport(bnx2fc_transport_template);
1306 	fc_release_transport(bnx2fc_vport_xport_template);
1307 	bnx2fc_transport_template = NULL;
1308 	bnx2fc_vport_xport_template = NULL;
1309 }
1310 
1311 static void bnx2fc_interface_release(struct kref *kref)
1312 {
1313 	struct fcoe_ctlr_device *ctlr_dev;
1314 	struct bnx2fc_interface *interface;
1315 	struct fcoe_ctlr *ctlr;
1316 	struct net_device *netdev;
1317 
1318 	interface = container_of(kref, struct bnx2fc_interface, kref);
1319 	BNX2FC_MISC_DBG("Interface is being released\n");
1320 
1321 	ctlr = bnx2fc_to_ctlr(interface);
1322 	ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1323 	netdev = interface->netdev;
1324 
1325 	/* tear-down FIP controller */
1326 	if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1327 		fcoe_ctlr_destroy(ctlr);
1328 
1329 	fcoe_ctlr_device_delete(ctlr_dev);
1330 
1331 	dev_put(netdev);
1332 	module_put(THIS_MODULE);
1333 }
1334 
1335 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1336 {
1337 	kref_get(&interface->kref);
1338 }
1339 
1340 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1341 {
1342 	kref_put(&interface->kref, bnx2fc_interface_release);
1343 }
1344 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1345 {
1346 	/* Free the command manager */
1347 	if (hba->cmd_mgr) {
1348 		bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1349 		hba->cmd_mgr = NULL;
1350 	}
1351 	kfree(hba->tgt_ofld_list);
1352 	bnx2fc_unbind_pcidev(hba);
1353 	kfree(hba);
1354 }
1355 
1356 /**
1357  * bnx2fc_hba_create - create a new bnx2fc hba
1358  *
1359  * @cnic:	pointer to cnic device
1360  *
1361  * Creates a new FCoE hba on the given device.
1362  *
1363  */
1364 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1365 {
1366 	struct bnx2fc_hba *hba;
1367 	struct fcoe_capabilities *fcoe_cap;
1368 	int rc;
1369 
1370 	hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1371 	if (!hba) {
1372 		printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1373 		return NULL;
1374 	}
1375 	spin_lock_init(&hba->hba_lock);
1376 	mutex_init(&hba->hba_mutex);
1377 	mutex_init(&hba->hba_stats_mutex);
1378 
1379 	hba->cnic = cnic;
1380 
1381 	hba->max_tasks = cnic->max_fcoe_exchanges;
1382 	hba->elstm_xids = (hba->max_tasks / 2);
1383 	hba->max_outstanding_cmds = hba->elstm_xids;
1384 	hba->max_xid = (hba->max_tasks - 1);
1385 
1386 	rc = bnx2fc_bind_pcidev(hba);
1387 	if (rc) {
1388 		printk(KERN_ERR PFX "create_adapter:  bind error\n");
1389 		goto bind_err;
1390 	}
1391 	hba->phys_dev = cnic->netdev;
1392 	hba->next_conn_id = 0;
1393 
1394 	hba->tgt_ofld_list =
1395 		kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *),
1396 			GFP_KERNEL);
1397 	if (!hba->tgt_ofld_list) {
1398 		printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1399 		goto tgtofld_err;
1400 	}
1401 
1402 	hba->num_ofld_sess = 0;
1403 
1404 	hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1405 	if (!hba->cmd_mgr) {
1406 		printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1407 		goto cmgr_err;
1408 	}
1409 	fcoe_cap = &hba->fcoe_cap;
1410 
1411 	fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1412 					FCOE_IOS_PER_CONNECTION_SHIFT;
1413 	fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1414 					FCOE_LOGINS_PER_PORT_SHIFT;
1415 	fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1416 					FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1417 	fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1418 					FCOE_NPIV_WWN_PER_PORT_SHIFT;
1419 	fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1420 					FCOE_TARGETS_SUPPORTED_SHIFT;
1421 	fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1422 					FCOE_OUTSTANDING_COMMANDS_SHIFT;
1423 	fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1424 
1425 	init_waitqueue_head(&hba->shutdown_wait);
1426 	init_waitqueue_head(&hba->destroy_wait);
1427 	INIT_LIST_HEAD(&hba->vports);
1428 
1429 	return hba;
1430 
1431 cmgr_err:
1432 	kfree(hba->tgt_ofld_list);
1433 tgtofld_err:
1434 	bnx2fc_unbind_pcidev(hba);
1435 bind_err:
1436 	kfree(hba);
1437 	return NULL;
1438 }
1439 
1440 static struct bnx2fc_interface *
1441 bnx2fc_interface_create(struct bnx2fc_hba *hba,
1442 			struct net_device *netdev,
1443 			enum fip_mode fip_mode)
1444 {
1445 	struct fcoe_ctlr_device *ctlr_dev;
1446 	struct bnx2fc_interface *interface;
1447 	struct fcoe_ctlr *ctlr;
1448 	int size;
1449 	int rc = 0;
1450 
1451 	size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1452 	ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1453 					 size);
1454 	if (!ctlr_dev) {
1455 		printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1456 		return NULL;
1457 	}
1458 	ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1459 	ctlr->cdev = ctlr_dev;
1460 	interface = fcoe_ctlr_priv(ctlr);
1461 	dev_hold(netdev);
1462 	kref_init(&interface->kref);
1463 	interface->hba = hba;
1464 	interface->netdev = netdev;
1465 
1466 	/* Initialize FIP */
1467 	fcoe_ctlr_init(ctlr, fip_mode);
1468 	ctlr->send = bnx2fc_fip_send;
1469 	ctlr->update_mac = bnx2fc_update_src_mac;
1470 	ctlr->get_src_addr = bnx2fc_get_src_mac;
1471 	set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1472 
1473 	rc = bnx2fc_interface_setup(interface);
1474 	if (!rc)
1475 		return interface;
1476 
1477 	fcoe_ctlr_destroy(ctlr);
1478 	dev_put(netdev);
1479 	fcoe_ctlr_device_delete(ctlr_dev);
1480 	return NULL;
1481 }
1482 
1483 /**
1484  * bnx2fc_if_create - Create FCoE instance on a given interface
1485  *
1486  * @interface:	FCoE interface to create a local port on
1487  * @parent:	Device pointer to be the parent in sysfs for the SCSI host
1488  * @npiv:	Indicates if the port is vport or not
1489  *
1490  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1491  *
1492  * Returns:	Allocated fc_lport or an error pointer
1493  */
1494 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1495 				  struct device *parent, int npiv)
1496 {
1497 	struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1498 	struct fc_lport		*lport, *n_port;
1499 	struct fcoe_port	*port;
1500 	struct Scsi_Host	*shost;
1501 	struct fc_vport		*vport = dev_to_vport(parent);
1502 	struct bnx2fc_lport	*blport;
1503 	struct bnx2fc_hba	*hba = interface->hba;
1504 	int			rc = 0;
1505 
1506 	blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1507 	if (!blport) {
1508 		BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1509 		return NULL;
1510 	}
1511 
1512 	/* Allocate Scsi_Host structure */
1513 	bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1514 	if (!npiv)
1515 		lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1516 	else
1517 		lport = libfc_vport_create(vport, sizeof(*port));
1518 
1519 	if (!lport) {
1520 		printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1521 		goto free_blport;
1522 	}
1523 	shost = lport->host;
1524 	port = lport_priv(lport);
1525 	port->lport = lport;
1526 	port->priv = interface;
1527 	port->get_netdev = bnx2fc_netdev;
1528 	INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1529 
1530 	/* Configure fcoe_port */
1531 	rc = bnx2fc_lport_config(lport);
1532 	if (rc)
1533 		goto lp_config_err;
1534 
1535 	if (npiv) {
1536 		printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1537 			vport->node_name, vport->port_name);
1538 		fc_set_wwnn(lport, vport->node_name);
1539 		fc_set_wwpn(lport, vport->port_name);
1540 	}
1541 	/* Configure netdev and networking properties of the lport */
1542 	rc = bnx2fc_net_config(lport, interface->netdev);
1543 	if (rc) {
1544 		printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1545 		goto lp_config_err;
1546 	}
1547 
1548 	rc = bnx2fc_shost_config(lport, parent);
1549 	if (rc) {
1550 		printk(KERN_ERR PFX "Couldn't configure shost for %s\n",
1551 			interface->netdev->name);
1552 		goto lp_config_err;
1553 	}
1554 
1555 	/* Initialize the libfc library */
1556 	rc = bnx2fc_libfc_config(lport);
1557 	if (rc) {
1558 		printk(KERN_ERR PFX "Couldn't configure libfc\n");
1559 		goto shost_err;
1560 	}
1561 	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1562 
1563 	if (bnx2fc_devloss_tmo)
1564 		fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo;
1565 
1566 	/* Allocate exchange manager */
1567 	if (!npiv)
1568 		rc = bnx2fc_em_config(lport, hba);
1569 	else {
1570 		shost = vport_to_shost(vport);
1571 		n_port = shost_priv(shost);
1572 		rc = fc_exch_mgr_list_clone(n_port, lport);
1573 	}
1574 
1575 	if (rc) {
1576 		printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1577 		goto shost_err;
1578 	}
1579 
1580 	bnx2fc_interface_get(interface);
1581 
1582 	spin_lock_bh(&hba->hba_lock);
1583 	blport->lport = lport;
1584 	list_add_tail(&blport->list, &hba->vports);
1585 	spin_unlock_bh(&hba->hba_lock);
1586 
1587 	return lport;
1588 
1589 shost_err:
1590 	scsi_remove_host(shost);
1591 lp_config_err:
1592 	scsi_host_put(lport->host);
1593 free_blport:
1594 	kfree(blport);
1595 	return NULL;
1596 }
1597 
1598 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1599 {
1600 	/* Dont listen for Ethernet packets anymore */
1601 	__dev_remove_pack(&interface->fcoe_packet_type);
1602 	__dev_remove_pack(&interface->fip_packet_type);
1603 	synchronize_net();
1604 }
1605 
1606 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1607 {
1608 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1609 	struct fc_lport *lport = ctlr->lp;
1610 	struct fcoe_port *port = lport_priv(lport);
1611 	struct bnx2fc_hba *hba = interface->hba;
1612 
1613 	/* Stop the transmit retry timer */
1614 	del_timer_sync(&port->timer);
1615 
1616 	/* Free existing transmit skbs */
1617 	fcoe_clean_pending_queue(lport);
1618 
1619 	bnx2fc_net_cleanup(interface);
1620 
1621 	bnx2fc_free_vport(hba, lport);
1622 }
1623 
1624 static void bnx2fc_if_destroy(struct fc_lport *lport)
1625 {
1626 
1627 	/* Free queued packets for the receive thread */
1628 	bnx2fc_clean_rx_queue(lport);
1629 
1630 	/* Detach from scsi-ml */
1631 	fc_remove_host(lport->host);
1632 	scsi_remove_host(lport->host);
1633 
1634 	/*
1635 	 * Note that only the physical lport will have the exchange manager.
1636 	 * for vports, this function is NOP
1637 	 */
1638 	fc_exch_mgr_free(lport);
1639 
1640 	/* Free memory used by statistical counters */
1641 	fc_lport_free_stats(lport);
1642 
1643 	/* Release Scsi_Host */
1644 	scsi_host_put(lport->host);
1645 }
1646 
1647 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1648 {
1649 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1650 	struct fc_lport *lport = ctlr->lp;
1651 	struct fcoe_port *port = lport_priv(lport);
1652 
1653 	bnx2fc_interface_cleanup(interface);
1654 	bnx2fc_stop(interface);
1655 	list_del(&interface->list);
1656 	bnx2fc_interface_put(interface);
1657 	queue_work(bnx2fc_wq, &port->destroy_work);
1658 }
1659 
1660 /**
1661  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1662  *
1663  * @netdev: The net device that the FCoE interface is on
1664  *
1665  * Called from sysfs.
1666  *
1667  * Returns: 0 for success
1668  */
1669 static int bnx2fc_destroy(struct net_device *netdev)
1670 {
1671 	struct bnx2fc_interface *interface = NULL;
1672 	struct workqueue_struct *timer_work_queue;
1673 	struct fcoe_ctlr *ctlr;
1674 	int rc = 0;
1675 
1676 	rtnl_lock();
1677 	mutex_lock(&bnx2fc_dev_lock);
1678 
1679 	interface = bnx2fc_interface_lookup(netdev);
1680 	ctlr = bnx2fc_to_ctlr(interface);
1681 	if (!interface || !ctlr->lp) {
1682 		rc = -ENODEV;
1683 		printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1684 		goto netdev_err;
1685 	}
1686 
1687 	timer_work_queue = interface->timer_work_queue;
1688 	__bnx2fc_destroy(interface);
1689 	destroy_workqueue(timer_work_queue);
1690 
1691 netdev_err:
1692 	mutex_unlock(&bnx2fc_dev_lock);
1693 	rtnl_unlock();
1694 	return rc;
1695 }
1696 
1697 static void bnx2fc_destroy_work(struct work_struct *work)
1698 {
1699 	struct fcoe_port *port;
1700 	struct fc_lport *lport;
1701 
1702 	port = container_of(work, struct fcoe_port, destroy_work);
1703 	lport = port->lport;
1704 
1705 	BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1706 
1707 	bnx2fc_if_destroy(lport);
1708 }
1709 
1710 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1711 {
1712 	bnx2fc_free_fw_resc(hba);
1713 	bnx2fc_free_task_ctx(hba);
1714 }
1715 
1716 /**
1717  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1718  *			pci structure
1719  *
1720  * @hba:		Adapter instance
1721  */
1722 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1723 {
1724 	if (bnx2fc_setup_task_ctx(hba))
1725 		goto mem_err;
1726 
1727 	if (bnx2fc_setup_fw_resc(hba))
1728 		goto mem_err;
1729 
1730 	return 0;
1731 mem_err:
1732 	bnx2fc_unbind_adapter_devices(hba);
1733 	return -ENOMEM;
1734 }
1735 
1736 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1737 {
1738 	struct cnic_dev *cnic;
1739 	struct pci_dev *pdev;
1740 
1741 	if (!hba->cnic) {
1742 		printk(KERN_ERR PFX "cnic is NULL\n");
1743 		return -ENODEV;
1744 	}
1745 	cnic = hba->cnic;
1746 	pdev = hba->pcidev = cnic->pcidev;
1747 	if (!hba->pcidev)
1748 		return -ENODEV;
1749 
1750 	switch (pdev->device) {
1751 	case PCI_DEVICE_ID_NX2_57710:
1752 		strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1753 		break;
1754 	case PCI_DEVICE_ID_NX2_57711:
1755 		strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1756 		break;
1757 	case PCI_DEVICE_ID_NX2_57712:
1758 	case PCI_DEVICE_ID_NX2_57712_MF:
1759 	case PCI_DEVICE_ID_NX2_57712_VF:
1760 		strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1761 		break;
1762 	case PCI_DEVICE_ID_NX2_57800:
1763 	case PCI_DEVICE_ID_NX2_57800_MF:
1764 	case PCI_DEVICE_ID_NX2_57800_VF:
1765 		strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1766 		break;
1767 	case PCI_DEVICE_ID_NX2_57810:
1768 	case PCI_DEVICE_ID_NX2_57810_MF:
1769 	case PCI_DEVICE_ID_NX2_57810_VF:
1770 		strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1771 		break;
1772 	case PCI_DEVICE_ID_NX2_57840:
1773 	case PCI_DEVICE_ID_NX2_57840_MF:
1774 	case PCI_DEVICE_ID_NX2_57840_VF:
1775 	case PCI_DEVICE_ID_NX2_57840_2_20:
1776 	case PCI_DEVICE_ID_NX2_57840_4_10:
1777 		strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1778 		break;
1779 	default:
1780 		pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1781 		break;
1782 	}
1783 	pci_dev_get(hba->pcidev);
1784 	return 0;
1785 }
1786 
1787 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1788 {
1789 	if (hba->pcidev) {
1790 		hba->chip_num[0] = '\0';
1791 		pci_dev_put(hba->pcidev);
1792 	}
1793 	hba->pcidev = NULL;
1794 }
1795 
1796 /**
1797  * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1798  *
1799  * @handle:    transport handle pointing to adapter struture
1800  */
1801 static int bnx2fc_ulp_get_stats(void *handle)
1802 {
1803 	struct bnx2fc_hba *hba = handle;
1804 	struct cnic_dev *cnic;
1805 	struct fcoe_stats_info *stats_addr;
1806 
1807 	if (!hba)
1808 		return -EINVAL;
1809 
1810 	cnic = hba->cnic;
1811 	stats_addr = &cnic->stats_addr->fcoe_stat;
1812 	if (!stats_addr)
1813 		return -EINVAL;
1814 
1815 	strncpy(stats_addr->version, BNX2FC_VERSION,
1816 		sizeof(stats_addr->version));
1817 	stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1818 	stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1819 
1820 	return 0;
1821 }
1822 
1823 
1824 /**
1825  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1826  *
1827  * @handle:	transport handle pointing to adapter structure
1828  *
1829  * This function maps adapter structure to pcidev structure and initiates
1830  *	firmware handshake to enable/initialize on-chip FCoE components.
1831  *	This bnx2fc - cnic interface api callback is used after following
1832  *	conditions are met -
1833  *	a) underlying network interface is up (marked by event NETDEV_UP
1834  *		from netdev
1835  *	b) bnx2fc adatper structure is registered.
1836  */
1837 static void bnx2fc_ulp_start(void *handle)
1838 {
1839 	struct bnx2fc_hba *hba = handle;
1840 	struct bnx2fc_interface *interface;
1841 	struct fcoe_ctlr *ctlr;
1842 	struct fc_lport *lport;
1843 
1844 	mutex_lock(&bnx2fc_dev_lock);
1845 
1846 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1847 		bnx2fc_fw_init(hba);
1848 
1849 	BNX2FC_MISC_DBG("bnx2fc started.\n");
1850 
1851 	list_for_each_entry(interface, &if_list, list) {
1852 		if (interface->hba == hba) {
1853 			ctlr = bnx2fc_to_ctlr(interface);
1854 			lport = ctlr->lp;
1855 			/* Kick off Fabric discovery*/
1856 			printk(KERN_ERR PFX "ulp_init: start discovery\n");
1857 			lport->tt.frame_send = bnx2fc_xmit;
1858 			bnx2fc_start_disc(interface);
1859 		}
1860 	}
1861 
1862 	mutex_unlock(&bnx2fc_dev_lock);
1863 }
1864 
1865 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1866 {
1867 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
1868 	fc_fabric_logoff(lport);
1869 	fc_lport_destroy(lport);
1870 }
1871 
1872 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1873 {
1874 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1875 	struct fc_lport *lport;
1876 	struct fc_lport *vport;
1877 
1878 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1879 		return;
1880 
1881 	lport = ctlr->lp;
1882 	bnx2fc_port_shutdown(lport);
1883 
1884 	mutex_lock(&lport->lp_mutex);
1885 	list_for_each_entry(vport, &lport->vports, list)
1886 		fc_host_port_type(vport->host) =
1887 					FC_PORTTYPE_UNKNOWN;
1888 	mutex_unlock(&lport->lp_mutex);
1889 	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1890 	fcoe_ctlr_link_down(ctlr);
1891 	fcoe_clean_pending_queue(lport);
1892 }
1893 
1894 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1895 {
1896 #define BNX2FC_INIT_POLL_TIME		(1000 / HZ)
1897 	int rc = -1;
1898 	int i = HZ;
1899 
1900 	rc = bnx2fc_bind_adapter_devices(hba);
1901 	if (rc) {
1902 		printk(KERN_ALERT PFX
1903 			"bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1904 		goto err_out;
1905 	}
1906 
1907 	rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1908 	if (rc) {
1909 		printk(KERN_ALERT PFX
1910 			"bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1911 		goto err_unbind;
1912 	}
1913 
1914 	/*
1915 	 * Wait until the adapter init message is complete, and adapter
1916 	 * state is UP.
1917 	 */
1918 	while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1919 		msleep(BNX2FC_INIT_POLL_TIME);
1920 
1921 	if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1922 		printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1923 				"Ignoring...\n",
1924 				hba->cnic->netdev->name);
1925 		rc = -1;
1926 		goto err_unbind;
1927 	}
1928 
1929 
1930 	set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1931 	return 0;
1932 
1933 err_unbind:
1934 	bnx2fc_unbind_adapter_devices(hba);
1935 err_out:
1936 	return rc;
1937 }
1938 
1939 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1940 {
1941 	if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1942 		if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1943 			timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer,
1944 				    0);
1945 			hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1946 								jiffies;
1947 			add_timer(&hba->destroy_timer);
1948 			wait_event_interruptible(hba->destroy_wait,
1949 					test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1950 						 &hba->flags));
1951 			clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1952 			/* This should never happen */
1953 			if (signal_pending(current))
1954 				flush_signals(current);
1955 
1956 			del_timer_sync(&hba->destroy_timer);
1957 		}
1958 		bnx2fc_unbind_adapter_devices(hba);
1959 	}
1960 }
1961 
1962 /**
1963  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1964  *
1965  * @handle:	transport handle pointing to adapter structure
1966  *
1967  * Driver checks if adapter is already in shutdown mode, if not start
1968  *	the shutdown process.
1969  */
1970 static void bnx2fc_ulp_stop(void *handle)
1971 {
1972 	struct bnx2fc_hba *hba = handle;
1973 	struct bnx2fc_interface *interface;
1974 
1975 	printk(KERN_ERR "ULP_STOP\n");
1976 
1977 	mutex_lock(&bnx2fc_dev_lock);
1978 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1979 		goto exit;
1980 	list_for_each_entry(interface, &if_list, list) {
1981 		if (interface->hba == hba)
1982 			bnx2fc_stop(interface);
1983 	}
1984 	BUG_ON(hba->num_ofld_sess != 0);
1985 
1986 	mutex_lock(&hba->hba_mutex);
1987 	clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1988 	clear_bit(ADAPTER_STATE_GOING_DOWN,
1989 		  &hba->adapter_state);
1990 
1991 	clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1992 	mutex_unlock(&hba->hba_mutex);
1993 
1994 	bnx2fc_fw_destroy(hba);
1995 exit:
1996 	mutex_unlock(&bnx2fc_dev_lock);
1997 }
1998 
1999 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
2000 {
2001 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
2002 	struct fc_lport *lport;
2003 	int wait_cnt = 0;
2004 
2005 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
2006 	/* Kick off FIP/FLOGI */
2007 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
2008 		printk(KERN_ERR PFX "Init not done yet\n");
2009 		return;
2010 	}
2011 
2012 	lport = ctlr->lp;
2013 	BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
2014 
2015 	if (!bnx2fc_link_ok(lport) && interface->enabled) {
2016 		BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
2017 		fcoe_ctlr_link_up(ctlr);
2018 		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2019 		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2020 	}
2021 
2022 	/* wait for the FCF to be selected before issuing FLOGI */
2023 	while (!ctlr->sel_fcf) {
2024 		msleep(250);
2025 		/* give up after 3 secs */
2026 		if (++wait_cnt > 12)
2027 			break;
2028 	}
2029 
2030 	/* Reset max receive frame size to default */
2031 	if (fc_set_mfs(lport, BNX2FC_MFS))
2032 		return;
2033 
2034 	fc_lport_init(lport);
2035 	fc_fabric_login(lport);
2036 }
2037 
2038 
2039 /**
2040  * bnx2fc_ulp_init - Initialize an adapter instance
2041  *
2042  * @dev :	cnic device handle
2043  * Called from cnic_register_driver() context to initialize all
2044  *	enumerated cnic devices. This routine allocates adapter structure
2045  *	and other device specific resources.
2046  */
2047 static void bnx2fc_ulp_init(struct cnic_dev *dev)
2048 {
2049 	struct bnx2fc_hba *hba;
2050 	int rc = 0;
2051 
2052 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
2053 	/* bnx2fc works only when bnx2x is loaded */
2054 	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
2055 	    (dev->max_fcoe_conn == 0)) {
2056 		printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
2057 				    " flags: %lx fcoe_conn: %d\n",
2058 			dev->netdev->name, dev->flags, dev->max_fcoe_conn);
2059 		return;
2060 	}
2061 
2062 	hba = bnx2fc_hba_create(dev);
2063 	if (!hba) {
2064 		printk(KERN_ERR PFX "hba initialization failed\n");
2065 		return;
2066 	}
2067 
2068 	pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
2069 
2070 	/* Add HBA to the adapter list */
2071 	mutex_lock(&bnx2fc_dev_lock);
2072 	list_add_tail(&hba->list, &adapter_list);
2073 	adapter_count++;
2074 	mutex_unlock(&bnx2fc_dev_lock);
2075 
2076 	dev->fcoe_cap = &hba->fcoe_cap;
2077 	clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2078 	rc = dev->register_device(dev, CNIC_ULP_FCOE,
2079 						(void *) hba);
2080 	if (rc)
2081 		printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2082 	else
2083 		set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2084 }
2085 
2086 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2087 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2088 {
2089 	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2090 
2091 	if (interface->enabled) {
2092 		if (!ctlr->lp) {
2093 			pr_err(PFX "__bnx2fc_disable: lport not found\n");
2094 			return -ENODEV;
2095 		} else {
2096 			interface->enabled = false;
2097 			fcoe_ctlr_link_down(ctlr);
2098 			fcoe_clean_pending_queue(ctlr->lp);
2099 		}
2100 	}
2101 	return 0;
2102 }
2103 
2104 /*
2105  * Deperecated: Use bnx2fc_enabled()
2106  */
2107 static int bnx2fc_disable(struct net_device *netdev)
2108 {
2109 	struct bnx2fc_interface *interface;
2110 	struct fcoe_ctlr *ctlr;
2111 	int rc = 0;
2112 
2113 	rtnl_lock();
2114 	mutex_lock(&bnx2fc_dev_lock);
2115 
2116 	interface = bnx2fc_interface_lookup(netdev);
2117 	ctlr = bnx2fc_to_ctlr(interface);
2118 
2119 	if (!interface) {
2120 		rc = -ENODEV;
2121 		pr_err(PFX "bnx2fc_disable: interface not found\n");
2122 	} else {
2123 		rc = __bnx2fc_disable(ctlr);
2124 	}
2125 	mutex_unlock(&bnx2fc_dev_lock);
2126 	rtnl_unlock();
2127 	return rc;
2128 }
2129 
2130 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2131 				      struct cnic_fc_npiv_tbl *npiv_tbl)
2132 {
2133 	struct fc_vport_identifiers vpid;
2134 	uint i, created = 0;
2135 	u64 wwnn = 0;
2136 	char wwpn_str[32];
2137 	char wwnn_str[32];
2138 
2139 	if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2140 		BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2141 		goto done;
2142 	}
2143 
2144 	/* Sanity check the first entry to make sure it's not 0 */
2145 	if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2146 	    wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2147 		BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2148 		goto done;
2149 	}
2150 
2151 	vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2152 	vpid.vport_type = FC_PORTTYPE_NPIV;
2153 	vpid.disable = false;
2154 
2155 	for (i = 0; i < npiv_tbl->count; i++) {
2156 		wwnn = wwn_to_u64(npiv_tbl->wwnn[i]);
2157 		if (wwnn == 0) {
2158 			/*
2159 			 * If we get a 0 element from for the WWNN then assume
2160 			 * the WWNN should be the same as the physical port.
2161 			 */
2162 			wwnn = lport->wwnn;
2163 		}
2164 		vpid.node_name = wwnn;
2165 		vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2166 		scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2167 		    "NPIV[%u]:%016llx-%016llx",
2168 		    created, vpid.port_name, vpid.node_name);
2169 		fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str));
2170 		fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str));
2171 		BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str,
2172 		    wwpn_str);
2173 		if (fc_vport_create(lport->host, 0, &vpid))
2174 			created++;
2175 		else
2176 			BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2177 	}
2178 done:
2179 	return created;
2180 }
2181 
2182 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2183 {
2184 	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2185 	struct bnx2fc_hba *hba;
2186 	struct cnic_fc_npiv_tbl *npiv_tbl;
2187 	struct fc_lport *lport;
2188 
2189 	if (!interface->enabled) {
2190 		if (!ctlr->lp) {
2191 			pr_err(PFX "__bnx2fc_enable: lport not found\n");
2192 			return -ENODEV;
2193 		} else if (!bnx2fc_link_ok(ctlr->lp)) {
2194 			fcoe_ctlr_link_up(ctlr);
2195 			interface->enabled = true;
2196 		}
2197 	}
2198 
2199 	/* Create static NPIV ports if any are contained in NVRAM */
2200 	hba = interface->hba;
2201 	lport = ctlr->lp;
2202 
2203 	if (!hba)
2204 		goto done;
2205 
2206 	if (!hba->cnic)
2207 		goto done;
2208 
2209 	if (!lport)
2210 		goto done;
2211 
2212 	if (!lport->host)
2213 		goto done;
2214 
2215 	if (!hba->cnic->get_fc_npiv_tbl)
2216 		goto done;
2217 
2218 	npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2219 	if (!npiv_tbl)
2220 		goto done;
2221 
2222 	if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2223 		goto done_free;
2224 
2225 	bnx2fc_npiv_create_vports(lport, npiv_tbl);
2226 done_free:
2227 	kfree(npiv_tbl);
2228 done:
2229 	return 0;
2230 }
2231 
2232 /*
2233  * Deprecated: Use bnx2fc_enabled()
2234  */
2235 static int bnx2fc_enable(struct net_device *netdev)
2236 {
2237 	struct bnx2fc_interface *interface;
2238 	struct fcoe_ctlr *ctlr;
2239 	int rc = 0;
2240 
2241 	rtnl_lock();
2242 	mutex_lock(&bnx2fc_dev_lock);
2243 
2244 	interface = bnx2fc_interface_lookup(netdev);
2245 	ctlr = bnx2fc_to_ctlr(interface);
2246 	if (!interface) {
2247 		rc = -ENODEV;
2248 		pr_err(PFX "bnx2fc_enable: interface not found\n");
2249 	} else {
2250 		rc = __bnx2fc_enable(ctlr);
2251 	}
2252 
2253 	mutex_unlock(&bnx2fc_dev_lock);
2254 	rtnl_unlock();
2255 	return rc;
2256 }
2257 
2258 /**
2259  * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2260  * @cdev: The FCoE Controller that is being enabled or disabled
2261  *
2262  * fcoe_sysfs will ensure that the state of 'enabled' has
2263  * changed, so no checking is necessary here. This routine simply
2264  * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2265  * When those routines are removed the functionality can be merged
2266  * here.
2267  */
2268 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2269 {
2270 	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2271 
2272 	switch (cdev->enabled) {
2273 	case FCOE_CTLR_ENABLED:
2274 		return __bnx2fc_enable(ctlr);
2275 	case FCOE_CTLR_DISABLED:
2276 		return __bnx2fc_disable(ctlr);
2277 	case FCOE_CTLR_UNUSED:
2278 	default:
2279 		return -ENOTSUPP;
2280 	}
2281 }
2282 
2283 enum bnx2fc_create_link_state {
2284 	BNX2FC_CREATE_LINK_DOWN,
2285 	BNX2FC_CREATE_LINK_UP,
2286 };
2287 
2288 /**
2289  * _bnx2fc_create() - Create bnx2fc FCoE interface
2290  * @netdev  :   The net_device object the Ethernet interface to create on
2291  * @fip_mode:   The FIP mode for this creation
2292  * @link_state: The ctlr link state on creation
2293  *
2294  * Called from either the libfcoe 'create' module parameter
2295  * via fcoe_create or from fcoe_syfs's ctlr_create file.
2296  *
2297  * libfcoe's 'create' module parameter is deprecated so some
2298  * consolidation of code can be done when that interface is
2299  * removed.
2300  *
2301  * Returns: 0 for success
2302  */
2303 static int _bnx2fc_create(struct net_device *netdev,
2304 			  enum fip_mode fip_mode,
2305 			  enum bnx2fc_create_link_state link_state)
2306 {
2307 	struct fcoe_ctlr_device *cdev;
2308 	struct fcoe_ctlr *ctlr;
2309 	struct bnx2fc_interface *interface;
2310 	struct bnx2fc_hba *hba;
2311 	struct net_device *phys_dev = netdev;
2312 	struct fc_lport *lport;
2313 	struct ethtool_drvinfo drvinfo;
2314 	int rc = 0;
2315 	int vlan_id = 0;
2316 
2317 	BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2318 	if (fip_mode != FIP_MODE_FABRIC) {
2319 		printk(KERN_ERR "fip mode not FABRIC\n");
2320 		return -EIO;
2321 	}
2322 
2323 	rtnl_lock();
2324 
2325 	mutex_lock(&bnx2fc_dev_lock);
2326 
2327 	if (!try_module_get(THIS_MODULE)) {
2328 		rc = -EINVAL;
2329 		goto mod_err;
2330 	}
2331 
2332 	/* obtain physical netdev */
2333 	if (is_vlan_dev(netdev))
2334 		phys_dev = vlan_dev_real_dev(netdev);
2335 
2336 	/* verify if the physical device is a netxtreme2 device */
2337 	if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2338 		memset(&drvinfo, 0, sizeof(drvinfo));
2339 		phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2340 		if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2341 			printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2342 			rc = -EINVAL;
2343 			goto netdev_err;
2344 		}
2345 	} else {
2346 		printk(KERN_ERR PFX "unable to obtain drv_info\n");
2347 		rc = -EINVAL;
2348 		goto netdev_err;
2349 	}
2350 
2351 	/* obtain interface and initialize rest of the structure */
2352 	hba = bnx2fc_hba_lookup(phys_dev);
2353 	if (!hba) {
2354 		rc = -ENODEV;
2355 		printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2356 		goto netdev_err;
2357 	}
2358 
2359 	if (bnx2fc_interface_lookup(netdev)) {
2360 		rc = -EEXIST;
2361 		goto netdev_err;
2362 	}
2363 
2364 	interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2365 	if (!interface) {
2366 		printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2367 		rc = -ENOMEM;
2368 		goto netdev_err;
2369 	}
2370 
2371 	if (is_vlan_dev(netdev)) {
2372 		vlan_id = vlan_dev_vlan_id(netdev);
2373 		interface->vlan_enabled = 1;
2374 	}
2375 
2376 	ctlr = bnx2fc_to_ctlr(interface);
2377 	cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2378 	interface->vlan_id = vlan_id;
2379 	interface->tm_timeout = BNX2FC_TM_TIMEOUT;
2380 
2381 	interface->timer_work_queue =
2382 			create_singlethread_workqueue("bnx2fc_timer_wq");
2383 	if (!interface->timer_work_queue) {
2384 		printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2385 		rc = -EINVAL;
2386 		goto ifput_err;
2387 	}
2388 
2389 	lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2390 	if (!lport) {
2391 		printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2392 			netdev->name);
2393 		rc = -EINVAL;
2394 		goto if_create_err;
2395 	}
2396 
2397 	/* Add interface to if_list */
2398 	list_add_tail(&interface->list, &if_list);
2399 
2400 	lport->boot_time = jiffies;
2401 
2402 	/* Make this master N_port */
2403 	ctlr->lp = lport;
2404 
2405 	if (link_state == BNX2FC_CREATE_LINK_UP)
2406 		cdev->enabled = FCOE_CTLR_ENABLED;
2407 	else
2408 		cdev->enabled = FCOE_CTLR_DISABLED;
2409 
2410 	if (link_state == BNX2FC_CREATE_LINK_UP &&
2411 	    !bnx2fc_link_ok(lport)) {
2412 		fcoe_ctlr_link_up(ctlr);
2413 		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2414 		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2415 	}
2416 
2417 	BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2418 	bnx2fc_start_disc(interface);
2419 
2420 	if (link_state == BNX2FC_CREATE_LINK_UP)
2421 		interface->enabled = true;
2422 
2423 	/*
2424 	 * Release from kref_init in bnx2fc_interface_setup, on success
2425 	 * lport should be holding a reference taken in bnx2fc_if_create
2426 	 */
2427 	bnx2fc_interface_put(interface);
2428 	/* put netdev that was held while calling dev_get_by_name */
2429 	mutex_unlock(&bnx2fc_dev_lock);
2430 	rtnl_unlock();
2431 	return 0;
2432 
2433 if_create_err:
2434 	destroy_workqueue(interface->timer_work_queue);
2435 ifput_err:
2436 	bnx2fc_net_cleanup(interface);
2437 	bnx2fc_interface_put(interface);
2438 	goto mod_err;
2439 netdev_err:
2440 	module_put(THIS_MODULE);
2441 mod_err:
2442 	mutex_unlock(&bnx2fc_dev_lock);
2443 	rtnl_unlock();
2444 	return rc;
2445 }
2446 
2447 /**
2448  * bnx2fc_create() - Create a bnx2fc interface
2449  * @netdev  : The net_device object the Ethernet interface to create on
2450  * @fip_mode: The FIP mode for this creation
2451  *
2452  * Called from fcoe transport
2453  *
2454  * Returns: 0 for success
2455  */
2456 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode)
2457 {
2458 	return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2459 }
2460 
2461 /**
2462  * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2463  * @netdev: The net_device to be used by the allocated FCoE Controller
2464  *
2465  * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2466  * in a link_down state. The allows the user an opportunity to configure
2467  * the FCoE Controller from sysfs before enabling the FCoE Controller.
2468  *
2469  * Creating in with this routine starts the FCoE Controller in Fabric
2470  * mode. The user can change to VN2VN or another mode before enabling.
2471  */
2472 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2473 {
2474 	return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2475 			      BNX2FC_CREATE_LINK_DOWN);
2476 }
2477 
2478 /**
2479  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2480  *
2481  * @cnic:	Pointer to cnic device instance
2482  *
2483  **/
2484 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2485 {
2486 	struct bnx2fc_hba *hba;
2487 
2488 	/* Called with bnx2fc_dev_lock held */
2489 	list_for_each_entry(hba, &adapter_list, list) {
2490 		if (hba->cnic == cnic)
2491 			return hba;
2492 	}
2493 	return NULL;
2494 }
2495 
2496 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2497 							*netdev)
2498 {
2499 	struct bnx2fc_interface *interface;
2500 
2501 	/* Called with bnx2fc_dev_lock held */
2502 	list_for_each_entry(interface, &if_list, list) {
2503 		if (interface->netdev == netdev)
2504 			return interface;
2505 	}
2506 	return NULL;
2507 }
2508 
2509 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2510 						      *phys_dev)
2511 {
2512 	struct bnx2fc_hba *hba;
2513 
2514 	/* Called with bnx2fc_dev_lock held */
2515 	list_for_each_entry(hba, &adapter_list, list) {
2516 		if (hba->phys_dev == phys_dev)
2517 			return hba;
2518 	}
2519 	printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2520 	return NULL;
2521 }
2522 
2523 /**
2524  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2525  *
2526  * @dev:	cnic device handle
2527  */
2528 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2529 {
2530 	struct bnx2fc_hba *hba;
2531 	struct bnx2fc_interface *interface, *tmp;
2532 
2533 	BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2534 
2535 	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2536 		printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2537 			dev->netdev->name, dev->flags);
2538 		return;
2539 	}
2540 
2541 	mutex_lock(&bnx2fc_dev_lock);
2542 	hba = bnx2fc_find_hba_for_cnic(dev);
2543 	if (!hba) {
2544 		printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2545 		       dev);
2546 		mutex_unlock(&bnx2fc_dev_lock);
2547 		return;
2548 	}
2549 
2550 	list_del_init(&hba->list);
2551 	adapter_count--;
2552 
2553 	list_for_each_entry_safe(interface, tmp, &if_list, list)
2554 		/* destroy not called yet, move to quiesced list */
2555 		if (interface->hba == hba)
2556 			__bnx2fc_destroy(interface);
2557 	mutex_unlock(&bnx2fc_dev_lock);
2558 
2559 	/* Ensure ALL destroy work has been completed before return */
2560 	flush_workqueue(bnx2fc_wq);
2561 
2562 	bnx2fc_ulp_stop(hba);
2563 	/* unregister cnic device */
2564 	if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2565 		hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2566 	bnx2fc_hba_destroy(hba);
2567 }
2568 
2569 static void bnx2fc_rport_terminate_io(struct fc_rport *rport)
2570 {
2571 	/* This is a no-op */
2572 }
2573 
2574 /**
2575  * bnx2fc_fcoe_reset - Resets the fcoe
2576  *
2577  * @shost: shost the reset is from
2578  *
2579  * Returns: always 0
2580  */
2581 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2582 {
2583 	struct fc_lport *lport = shost_priv(shost);
2584 	fc_lport_reset(lport);
2585 	return 0;
2586 }
2587 
2588 
2589 static bool bnx2fc_match(struct net_device *netdev)
2590 {
2591 	struct net_device *phys_dev = netdev;
2592 
2593 	mutex_lock(&bnx2fc_dev_lock);
2594 	if (is_vlan_dev(netdev))
2595 		phys_dev = vlan_dev_real_dev(netdev);
2596 
2597 	if (bnx2fc_hba_lookup(phys_dev)) {
2598 		mutex_unlock(&bnx2fc_dev_lock);
2599 		return true;
2600 	}
2601 
2602 	mutex_unlock(&bnx2fc_dev_lock);
2603 	return false;
2604 }
2605 
2606 
2607 static struct fcoe_transport bnx2fc_transport = {
2608 	.name = {"bnx2fc"},
2609 	.attached = false,
2610 	.list = LIST_HEAD_INIT(bnx2fc_transport.list),
2611 	.alloc = bnx2fc_ctlr_alloc,
2612 	.match = bnx2fc_match,
2613 	.create = bnx2fc_create,
2614 	.destroy = bnx2fc_destroy,
2615 	.enable = bnx2fc_enable,
2616 	.disable = bnx2fc_disable,
2617 };
2618 
2619 /**
2620  * bnx2fc_cpu_online - Create a receive thread for an  online CPU
2621  *
2622  * @cpu: cpu index for the online cpu
2623  */
2624 static int bnx2fc_cpu_online(unsigned int cpu)
2625 {
2626 	struct bnx2fc_percpu_s *p;
2627 	struct task_struct *thread;
2628 
2629 	p = &per_cpu(bnx2fc_percpu, cpu);
2630 
2631 	thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2632 					(void *)p, cpu_to_node(cpu),
2633 					"bnx2fc_thread/%d", cpu);
2634 	if (IS_ERR(thread))
2635 		return PTR_ERR(thread);
2636 
2637 	/* bind thread to the cpu */
2638 	kthread_bind(thread, cpu);
2639 	p->iothread = thread;
2640 	wake_up_process(thread);
2641 	return 0;
2642 }
2643 
2644 static int bnx2fc_cpu_offline(unsigned int cpu)
2645 {
2646 	struct bnx2fc_percpu_s *p;
2647 	struct task_struct *thread;
2648 	struct bnx2fc_work *work, *tmp;
2649 
2650 	BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2651 
2652 	/* Prevent any new work from being queued for this CPU */
2653 	p = &per_cpu(bnx2fc_percpu, cpu);
2654 	spin_lock_bh(&p->fp_work_lock);
2655 	thread = p->iothread;
2656 	p->iothread = NULL;
2657 
2658 	/* Free all work in the list */
2659 	list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2660 		list_del_init(&work->list);
2661 		bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data,
2662 					work->num_rq, work->task);
2663 		kfree(work);
2664 	}
2665 
2666 	spin_unlock_bh(&p->fp_work_lock);
2667 
2668 	if (thread)
2669 		kthread_stop(thread);
2670 	return 0;
2671 }
2672 
2673 static int bnx2fc_slave_configure(struct scsi_device *sdev)
2674 {
2675 	if (!bnx2fc_queue_depth)
2676 		return 0;
2677 
2678 	scsi_change_queue_depth(sdev, bnx2fc_queue_depth);
2679 	return 0;
2680 }
2681 
2682 static enum cpuhp_state bnx2fc_online_state;
2683 
2684 /**
2685  * bnx2fc_mod_init - module init entry point
2686  *
2687  * Initialize driver wide global data structures, and register
2688  * with cnic module
2689  **/
2690 static int __init bnx2fc_mod_init(void)
2691 {
2692 	struct fcoe_percpu_s *bg;
2693 	struct task_struct *l2_thread;
2694 	int rc = 0;
2695 	unsigned int cpu = 0;
2696 	struct bnx2fc_percpu_s *p;
2697 
2698 	printk(KERN_INFO PFX "%s", version);
2699 
2700 	/* register as a fcoe transport */
2701 	rc = fcoe_transport_attach(&bnx2fc_transport);
2702 	if (rc) {
2703 		printk(KERN_ERR "failed to register an fcoe transport, check "
2704 			"if libfcoe is loaded\n");
2705 		goto out;
2706 	}
2707 
2708 	INIT_LIST_HEAD(&adapter_list);
2709 	INIT_LIST_HEAD(&if_list);
2710 	mutex_init(&bnx2fc_dev_lock);
2711 	adapter_count = 0;
2712 
2713 	/* Attach FC transport template */
2714 	rc = bnx2fc_attach_transport();
2715 	if (rc)
2716 		goto detach_ft;
2717 
2718 	bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2719 	if (!bnx2fc_wq) {
2720 		rc = -ENOMEM;
2721 		goto release_bt;
2722 	}
2723 
2724 	bg = &bnx2fc_global;
2725 	skb_queue_head_init(&bg->fcoe_rx_list);
2726 	l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2727 				   (void *)bg,
2728 				   "bnx2fc_l2_thread");
2729 	if (IS_ERR(l2_thread)) {
2730 		rc = PTR_ERR(l2_thread);
2731 		goto free_wq;
2732 	}
2733 	wake_up_process(l2_thread);
2734 	spin_lock_bh(&bg->fcoe_rx_list.lock);
2735 	bg->kthread = l2_thread;
2736 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2737 
2738 	for_each_possible_cpu(cpu) {
2739 		p = &per_cpu(bnx2fc_percpu, cpu);
2740 		INIT_LIST_HEAD(&p->work_list);
2741 		spin_lock_init(&p->fp_work_lock);
2742 	}
2743 
2744 	rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online",
2745 			       bnx2fc_cpu_online, bnx2fc_cpu_offline);
2746 	if (rc < 0)
2747 		goto stop_thread;
2748 	bnx2fc_online_state = rc;
2749 
2750 	cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2751 	return 0;
2752 
2753 stop_thread:
2754 	kthread_stop(l2_thread);
2755 free_wq:
2756 	destroy_workqueue(bnx2fc_wq);
2757 release_bt:
2758 	bnx2fc_release_transport();
2759 detach_ft:
2760 	fcoe_transport_detach(&bnx2fc_transport);
2761 out:
2762 	return rc;
2763 }
2764 
2765 static void __exit bnx2fc_mod_exit(void)
2766 {
2767 	LIST_HEAD(to_be_deleted);
2768 	struct bnx2fc_hba *hba, *next;
2769 	struct fcoe_percpu_s *bg;
2770 	struct task_struct *l2_thread;
2771 	struct sk_buff *skb;
2772 
2773 	/*
2774 	 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2775 	 * it will have higher precedence than bnx2fc_dev_lock.
2776 	 * unregister_device() cannot be called with bnx2fc_dev_lock
2777 	 * held.
2778 	 */
2779 	mutex_lock(&bnx2fc_dev_lock);
2780 	list_splice_init(&adapter_list, &to_be_deleted);
2781 	adapter_count = 0;
2782 	mutex_unlock(&bnx2fc_dev_lock);
2783 
2784 	/* Unregister with cnic */
2785 	list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2786 		list_del_init(&hba->list);
2787 		printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2788 		       hba);
2789 		bnx2fc_ulp_stop(hba);
2790 		/* unregister cnic device */
2791 		if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2792 				       &hba->reg_with_cnic))
2793 			hba->cnic->unregister_device(hba->cnic,
2794 							 CNIC_ULP_FCOE);
2795 		bnx2fc_hba_destroy(hba);
2796 	}
2797 	cnic_unregister_driver(CNIC_ULP_FCOE);
2798 
2799 	/* Destroy global thread */
2800 	bg = &bnx2fc_global;
2801 	spin_lock_bh(&bg->fcoe_rx_list.lock);
2802 	l2_thread = bg->kthread;
2803 	bg->kthread = NULL;
2804 	while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2805 		kfree_skb(skb);
2806 
2807 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2808 
2809 	if (l2_thread)
2810 		kthread_stop(l2_thread);
2811 
2812 	cpuhp_remove_state(bnx2fc_online_state);
2813 
2814 	destroy_workqueue(bnx2fc_wq);
2815 	/*
2816 	 * detach from scsi transport
2817 	 * must happen after all destroys are done
2818 	 */
2819 	bnx2fc_release_transport();
2820 
2821 	/* detach from fcoe transport */
2822 	fcoe_transport_detach(&bnx2fc_transport);
2823 }
2824 
2825 module_init(bnx2fc_mod_init);
2826 module_exit(bnx2fc_mod_exit);
2827 
2828 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2829 	.set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2830 	.get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2831 	.get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2832 	.get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2833 	.get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2834 	.get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2835 	.get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2836 
2837 	.get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2838 	.get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2839 };
2840 
2841 static struct fc_function_template bnx2fc_transport_function = {
2842 	.show_host_node_name = 1,
2843 	.show_host_port_name = 1,
2844 	.show_host_supported_classes = 1,
2845 	.show_host_supported_fc4s = 1,
2846 	.show_host_active_fc4s = 1,
2847 	.show_host_maxframe_size = 1,
2848 
2849 	.show_host_port_id = 1,
2850 	.show_host_supported_speeds = 1,
2851 	.get_host_speed = fc_get_host_speed,
2852 	.show_host_speed = 1,
2853 	.show_host_port_type = 1,
2854 	.get_host_port_state = fc_get_host_port_state,
2855 	.show_host_port_state = 1,
2856 	.show_host_symbolic_name = 1,
2857 
2858 	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2859 				sizeof(struct bnx2fc_rport)),
2860 	.show_rport_maxframe_size = 1,
2861 	.show_rport_supported_classes = 1,
2862 
2863 	.show_host_fabric_name = 1,
2864 	.show_starget_node_name = 1,
2865 	.show_starget_port_name = 1,
2866 	.show_starget_port_id = 1,
2867 	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2868 	.show_rport_dev_loss_tmo = 1,
2869 	.get_fc_host_stats = bnx2fc_get_host_stats,
2870 
2871 	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2872 
2873 	.terminate_rport_io = bnx2fc_rport_terminate_io,
2874 
2875 	.vport_create = bnx2fc_vport_create,
2876 	.vport_delete = bnx2fc_vport_destroy,
2877 	.vport_disable = bnx2fc_vport_disable,
2878 	.bsg_request = fc_lport_bsg_request,
2879 };
2880 
2881 static struct fc_function_template bnx2fc_vport_xport_function = {
2882 	.show_host_node_name = 1,
2883 	.show_host_port_name = 1,
2884 	.show_host_supported_classes = 1,
2885 	.show_host_supported_fc4s = 1,
2886 	.show_host_active_fc4s = 1,
2887 	.show_host_maxframe_size = 1,
2888 
2889 	.show_host_port_id = 1,
2890 	.show_host_supported_speeds = 1,
2891 	.get_host_speed = fc_get_host_speed,
2892 	.show_host_speed = 1,
2893 	.show_host_port_type = 1,
2894 	.get_host_port_state = fc_get_host_port_state,
2895 	.show_host_port_state = 1,
2896 	.show_host_symbolic_name = 1,
2897 
2898 	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2899 				sizeof(struct bnx2fc_rport)),
2900 	.show_rport_maxframe_size = 1,
2901 	.show_rport_supported_classes = 1,
2902 
2903 	.show_host_fabric_name = 1,
2904 	.show_starget_node_name = 1,
2905 	.show_starget_port_name = 1,
2906 	.show_starget_port_id = 1,
2907 	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2908 	.show_rport_dev_loss_tmo = 1,
2909 	.get_fc_host_stats = fc_get_host_stats,
2910 	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2911 	.terminate_rport_io = fc_rport_terminate_io,
2912 	.bsg_request = fc_lport_bsg_request,
2913 };
2914 
2915 /*
2916  * Additional scsi_host attributes.
2917  */
2918 static ssize_t
2919 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
2920 	char *buf)
2921 {
2922 	struct Scsi_Host *shost = class_to_shost(dev);
2923 	struct fc_lport *lport = shost_priv(shost);
2924 	struct fcoe_port *port = lport_priv(lport);
2925 	struct bnx2fc_interface *interface = port->priv;
2926 
2927 	sprintf(buf, "%u\n", interface->tm_timeout);
2928 	return strlen(buf);
2929 }
2930 
2931 static ssize_t
2932 bnx2fc_tm_timeout_store(struct device *dev,
2933 	struct device_attribute *attr, const char *buf, size_t count)
2934 {
2935 	struct Scsi_Host *shost = class_to_shost(dev);
2936 	struct fc_lport *lport = shost_priv(shost);
2937 	struct fcoe_port *port = lport_priv(lport);
2938 	struct bnx2fc_interface *interface = port->priv;
2939 	int rval, val;
2940 
2941 	rval = kstrtouint(buf, 10, &val);
2942 	if (rval)
2943 		return rval;
2944 	if (val > 255)
2945 		return -ERANGE;
2946 
2947 	interface->tm_timeout = (u8)val;
2948 	return strlen(buf);
2949 }
2950 
2951 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
2952 	bnx2fc_tm_timeout_store);
2953 
2954 static struct device_attribute *bnx2fc_host_attrs[] = {
2955 	&dev_attr_tm_timeout,
2956 	NULL,
2957 };
2958 
2959 /*
2960  * scsi_host_template structure used while registering with SCSI-ml
2961  */
2962 static struct scsi_host_template bnx2fc_shost_template = {
2963 	.module			= THIS_MODULE,
2964 	.name			= "QLogic Offload FCoE Initiator",
2965 	.queuecommand		= bnx2fc_queuecommand,
2966 	.eh_timed_out		= fc_eh_timed_out,
2967 	.eh_abort_handler	= bnx2fc_eh_abort,	  /* abts */
2968 	.eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2969 	.eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2970 	.eh_host_reset_handler	= fc_eh_host_reset,
2971 	.slave_alloc		= fc_slave_alloc,
2972 	.change_queue_depth	= scsi_change_queue_depth,
2973 	.this_id		= -1,
2974 	.cmd_per_lun		= 3,
2975 	.sg_tablesize		= BNX2FC_MAX_BDS_PER_CMD,
2976 	.dma_boundary           = 0x7fff,
2977 	.max_sectors		= 0x3fbf,
2978 	.track_queue_depth	= 1,
2979 	.slave_configure	= bnx2fc_slave_configure,
2980 	.shost_attrs		= bnx2fc_host_attrs,
2981 };
2982 
2983 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2984 	.frame_send		= bnx2fc_xmit,
2985 	.elsct_send		= bnx2fc_elsct_send,
2986 	.fcp_abort_io		= bnx2fc_abort_io,
2987 	.fcp_cleanup		= bnx2fc_cleanup,
2988 	.get_lesb		= fcoe_get_lesb,
2989 	.rport_event_callback	= bnx2fc_rport_event_handler,
2990 };
2991 
2992 /*
2993  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2994  *			structure carrying callback function pointers
2995  */
2996 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2997 	.owner			= THIS_MODULE,
2998 	.cnic_init		= bnx2fc_ulp_init,
2999 	.cnic_exit		= bnx2fc_ulp_exit,
3000 	.cnic_start		= bnx2fc_ulp_start,
3001 	.cnic_stop		= bnx2fc_ulp_stop,
3002 	.indicate_kcqes		= bnx2fc_indicate_kcqe,
3003 	.indicate_netevent	= bnx2fc_indicate_netevent,
3004 	.cnic_get_stats		= bnx2fc_ulp_get_stats,
3005 };
3006