1 /* bnx2fc_fcoe.c: QLogic Linux FCoE offload driver.
2  * This file contains the code that interacts with libfc, libfcoe,
3  * cnic modules to create FCoE instances, send/receive non-offloaded
4  * FIP/FCoE packets, listen to link events etc.
5  *
6  * Copyright (c) 2008-2013 Broadcom Corporation
7  * Copyright (c) 2014-2016 QLogic Corporation
8  * Copyright (c) 2016-2017 Cavium Inc.
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation.
13  *
14  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
15  */
16 
17 #include "bnx2fc.h"
18 
19 #include <linux/ethtool.h>
20 
21 static struct list_head adapter_list;
22 static struct list_head if_list;
23 static u32 adapter_count;
24 static DEFINE_MUTEX(bnx2fc_dev_lock);
25 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
26 
27 #define DRV_MODULE_NAME		"bnx2fc"
28 #define DRV_MODULE_VERSION	BNX2FC_VERSION
29 #define DRV_MODULE_RELDATE	"October 15, 2015"
30 
31 
32 static char version[] =
33 		"QLogic FCoE Driver " DRV_MODULE_NAME \
34 		" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
35 
36 
37 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
38 MODULE_DESCRIPTION("QLogic FCoE Driver");
39 MODULE_LICENSE("GPL");
40 MODULE_VERSION(DRV_MODULE_VERSION);
41 
42 #define BNX2FC_MAX_QUEUE_DEPTH	256
43 #define BNX2FC_MIN_QUEUE_DEPTH	32
44 #define FCOE_WORD_TO_BYTE  4
45 
46 static struct scsi_transport_template	*bnx2fc_transport_template;
47 static struct scsi_transport_template	*bnx2fc_vport_xport_template;
48 
49 struct workqueue_struct *bnx2fc_wq;
50 
51 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
52  * Here the io threads are per cpu but the l2 thread is just one
53  */
54 struct fcoe_percpu_s bnx2fc_global;
55 static DEFINE_SPINLOCK(bnx2fc_global_lock);
56 
57 static struct cnic_ulp_ops bnx2fc_cnic_cb;
58 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
59 static struct scsi_host_template bnx2fc_shost_template;
60 static struct fc_function_template bnx2fc_transport_function;
61 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
62 static struct fc_function_template bnx2fc_vport_xport_function;
63 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode);
64 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
65 static int bnx2fc_destroy(struct net_device *net_device);
66 static int bnx2fc_enable(struct net_device *netdev);
67 static int bnx2fc_disable(struct net_device *netdev);
68 
69 /* fcoe_syfs control interface handlers */
70 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
71 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
72 
73 static void bnx2fc_recv_frame(struct sk_buff *skb);
74 
75 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
76 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
77 static int bnx2fc_lport_config(struct fc_lport *lport);
78 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
79 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
80 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
81 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
82 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
83 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
84 				  struct device *parent, int npiv);
85 static void bnx2fc_port_destroy(struct fcoe_port *port);
86 
87 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
88 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
89 							*phys_dev);
90 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
91 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
92 
93 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
94 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
95 
96 static void bnx2fc_port_shutdown(struct fc_lport *lport);
97 static void bnx2fc_stop(struct bnx2fc_interface *interface);
98 static int __init bnx2fc_mod_init(void);
99 static void __exit bnx2fc_mod_exit(void);
100 
101 unsigned int bnx2fc_debug_level;
102 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
103 MODULE_PARM_DESC(debug_logging,
104 		"Option to enable extended logging,\n"
105 		"\t\tDefault is 0 - no logging.\n"
106 		"\t\t0x01 - SCSI cmd error, cleanup.\n"
107 		"\t\t0x02 - Session setup, cleanup, etc.\n"
108 		"\t\t0x04 - lport events, link, mtu, etc.\n"
109 		"\t\t0x08 - ELS logs.\n"
110 		"\t\t0x10 - fcoe L2 fame related logs.\n"
111 		"\t\t0xff - LOG all messages.");
112 
113 static uint bnx2fc_devloss_tmo;
114 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO);
115 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports "
116 	"attached via bnx2fc.");
117 
118 static uint bnx2fc_max_luns = BNX2FC_MAX_LUN;
119 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO);
120 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default "
121 	"0xffff.");
122 
123 static uint bnx2fc_queue_depth;
124 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO);
125 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices "
126 	"attached via bnx2fc.");
127 
128 static uint bnx2fc_log_fka;
129 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
130 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
131 	"initiating a FIP keep alive when debug logging is enabled.");
132 
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 	u64 crc_err;
512 	u32 fr_len, fr_crc;
513 	struct fc_lport *lport;
514 	struct fcoe_rcv_info *fr;
515 	struct fc_stats *stats;
516 	struct fc_frame_header *fh;
517 	struct fcoe_crc_eof crc_eof;
518 	struct fc_frame *fp;
519 	struct fc_lport *vn_port;
520 	struct fcoe_port *port, *phys_port;
521 	u8 *mac = NULL;
522 	u8 *dest_mac = NULL;
523 	struct fcoe_hdr *hp;
524 	struct bnx2fc_interface *interface;
525 	struct fcoe_ctlr *ctlr;
526 
527 	fr = fcoe_dev_from_skb(skb);
528 	lport = fr->fr_dev;
529 	if (unlikely(lport == NULL)) {
530 		printk(KERN_ERR PFX "Invalid lport struct\n");
531 		kfree_skb(skb);
532 		return;
533 	}
534 
535 	if (skb_is_nonlinear(skb))
536 		skb_linearize(skb);
537 	mac = eth_hdr(skb)->h_source;
538 	dest_mac = eth_hdr(skb)->h_dest;
539 
540 	/* Pull the header */
541 	hp = (struct fcoe_hdr *) skb_network_header(skb);
542 	fh = (struct fc_frame_header *) skb_transport_header(skb);
543 	skb_pull(skb, sizeof(struct fcoe_hdr));
544 	fr_len = skb->len - sizeof(struct fcoe_crc_eof);
545 
546 	stats = per_cpu_ptr(lport->stats, get_cpu());
547 	stats->RxFrames++;
548 	stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
549 	put_cpu();
550 
551 	fp = (struct fc_frame *)skb;
552 	fc_frame_init(fp);
553 	fr_dev(fp) = lport;
554 	fr_sof(fp) = hp->fcoe_sof;
555 	if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
556 		kfree_skb(skb);
557 		return;
558 	}
559 	fr_eof(fp) = crc_eof.fcoe_eof;
560 	fr_crc(fp) = crc_eof.fcoe_crc32;
561 	if (pskb_trim(skb, fr_len)) {
562 		kfree_skb(skb);
563 		return;
564 	}
565 
566 	phys_port = lport_priv(lport);
567 	interface = phys_port->priv;
568 	ctlr = bnx2fc_to_ctlr(interface);
569 
570 	fh = fc_frame_header_get(fp);
571 
572 	if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
573 		BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n",
574 		    dest_mac);
575 		kfree_skb(skb);
576 		return;
577 	}
578 
579 	vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
580 	if (vn_port) {
581 		port = lport_priv(vn_port);
582 		if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
583 			BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
584 			kfree_skb(skb);
585 			return;
586 		}
587 	}
588 	if (ctlr->state) {
589 		if (!ether_addr_equal(mac, ctlr->dest_addr)) {
590 			BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n",
591 			    mac, ctlr->dest_addr);
592 			kfree_skb(skb);
593 			return;
594 		}
595 	}
596 	if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
597 	    fh->fh_type == FC_TYPE_FCP) {
598 		/* Drop FCP data. We dont this in L2 path */
599 		kfree_skb(skb);
600 		return;
601 	}
602 	if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
603 	    fh->fh_type == FC_TYPE_ELS) {
604 		switch (fc_frame_payload_op(fp)) {
605 		case ELS_LOGO:
606 			if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
607 				/* drop non-FIP LOGO */
608 				kfree_skb(skb);
609 				return;
610 			}
611 			break;
612 		}
613 	}
614 
615 	if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
616 		/* Drop incoming ABTS */
617 		kfree_skb(skb);
618 		return;
619 	}
620 
621 	/*
622 	 * If the destination ID from the frame header does not match what we
623 	 * have on record for lport and the search for a NPIV port came up
624 	 * empty then this is not addressed to our port so simply drop it.
625 	 */
626 	if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
627 		BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
628 		    lport->port_id, ntoh24(fh->fh_d_id));
629 		kfree_skb(skb);
630 		return;
631 	}
632 
633 	fr_crc = le32_to_cpu(fr_crc(fp));
634 
635 	if (unlikely(fr_crc != ~crc32(~0, skb->data, fr_len))) {
636 		stats = per_cpu_ptr(lport->stats, get_cpu());
637 		crc_err = (stats->InvalidCRCCount++);
638 		put_cpu();
639 		if (crc_err < 5)
640 			printk(KERN_WARNING PFX "dropping frame with "
641 			       "CRC error\n");
642 		kfree_skb(skb);
643 		return;
644 	}
645 	fc_exch_recv(lport, fp);
646 }
647 
648 /**
649  * bnx2fc_percpu_io_thread - thread per cpu for ios
650  *
651  * @arg:	ptr to bnx2fc_percpu_info structure
652  */
653 static int bnx2fc_percpu_io_thread(void *arg)
654 {
655 	struct bnx2fc_percpu_s *p = arg;
656 	struct bnx2fc_work *work, *tmp;
657 	LIST_HEAD(work_list);
658 
659 	set_user_nice(current, MIN_NICE);
660 	set_current_state(TASK_INTERRUPTIBLE);
661 	while (!kthread_should_stop()) {
662 		schedule();
663 		spin_lock_bh(&p->fp_work_lock);
664 		while (!list_empty(&p->work_list)) {
665 			list_splice_init(&p->work_list, &work_list);
666 			spin_unlock_bh(&p->fp_work_lock);
667 
668 			list_for_each_entry_safe(work, tmp, &work_list, list) {
669 				list_del_init(&work->list);
670 				bnx2fc_process_cq_compl(work->tgt, work->wqe,
671 							work->rq_data,
672 							work->num_rq,
673 							work->task);
674 				kfree(work);
675 			}
676 
677 			spin_lock_bh(&p->fp_work_lock);
678 		}
679 		__set_current_state(TASK_INTERRUPTIBLE);
680 		spin_unlock_bh(&p->fp_work_lock);
681 	}
682 	__set_current_state(TASK_RUNNING);
683 
684 	return 0;
685 }
686 
687 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
688 {
689 	struct fc_host_statistics *bnx2fc_stats;
690 	struct fc_lport *lport = shost_priv(shost);
691 	struct fcoe_port *port = lport_priv(lport);
692 	struct bnx2fc_interface *interface = port->priv;
693 	struct bnx2fc_hba *hba = interface->hba;
694 	struct fcoe_statistics_params *fw_stats;
695 	int rc = 0;
696 
697 	fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
698 	if (!fw_stats)
699 		return NULL;
700 
701 	mutex_lock(&hba->hba_stats_mutex);
702 
703 	bnx2fc_stats = fc_get_host_stats(shost);
704 
705 	init_completion(&hba->stat_req_done);
706 	if (bnx2fc_send_stat_req(hba))
707 		goto unlock_stats_mutex;
708 	rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
709 	if (!rc) {
710 		BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
711 		goto unlock_stats_mutex;
712 	}
713 	BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
714 	bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
715 	BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
716 	bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
717 	BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
718 	bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
719 	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
720 	bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
721 	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
722 	bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
723 
724 	bnx2fc_stats->dumped_frames = 0;
725 	bnx2fc_stats->lip_count = 0;
726 	bnx2fc_stats->nos_count = 0;
727 	bnx2fc_stats->loss_of_sync_count = 0;
728 	bnx2fc_stats->loss_of_signal_count = 0;
729 	bnx2fc_stats->prim_seq_protocol_err_count = 0;
730 
731 	memcpy(&hba->prev_stats, hba->stats_buffer,
732 	       sizeof(struct fcoe_statistics_params));
733 
734 unlock_stats_mutex:
735 	mutex_unlock(&hba->hba_stats_mutex);
736 	return bnx2fc_stats;
737 }
738 
739 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
740 {
741 	struct fcoe_port *port = lport_priv(lport);
742 	struct bnx2fc_interface *interface = port->priv;
743 	struct bnx2fc_hba *hba = interface->hba;
744 	struct Scsi_Host *shost = lport->host;
745 	int rc = 0;
746 
747 	shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
748 	shost->max_lun = bnx2fc_max_luns;
749 	shost->max_id = BNX2FC_MAX_FCP_TGT;
750 	shost->max_channel = 0;
751 	if (lport->vport)
752 		shost->transportt = bnx2fc_vport_xport_template;
753 	else
754 		shost->transportt = bnx2fc_transport_template;
755 
756 	/* Add the new host to SCSI-ml */
757 	rc = scsi_add_host(lport->host, dev);
758 	if (rc) {
759 		printk(KERN_ERR PFX "Error on scsi_add_host\n");
760 		return rc;
761 	}
762 	if (!lport->vport)
763 		fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
764 	snprintf(fc_host_symbolic_name(lport->host), 256,
765 		 "%s (QLogic %s) v%s over %s",
766 		BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
767 		interface->netdev->name);
768 
769 	return 0;
770 }
771 
772 static int bnx2fc_link_ok(struct fc_lport *lport)
773 {
774 	struct fcoe_port *port = lport_priv(lport);
775 	struct bnx2fc_interface *interface = port->priv;
776 	struct bnx2fc_hba *hba = interface->hba;
777 	struct net_device *dev = hba->phys_dev;
778 	int rc = 0;
779 
780 	if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
781 		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
782 	else {
783 		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
784 		rc = -1;
785 	}
786 	return rc;
787 }
788 
789 /**
790  * bnx2fc_get_link_state - get network link state
791  *
792  * @hba:	adapter instance pointer
793  *
794  * updates adapter structure flag based on netdev state
795  */
796 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
797 {
798 	if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
799 		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
800 	else
801 		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
802 }
803 
804 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
805 {
806 	struct bnx2fc_hba *hba;
807 	struct bnx2fc_interface *interface;
808 	struct fcoe_ctlr *ctlr;
809 	struct fcoe_port *port;
810 	u64 wwnn, wwpn;
811 
812 	port = lport_priv(lport);
813 	interface = port->priv;
814 	ctlr = bnx2fc_to_ctlr(interface);
815 	hba = interface->hba;
816 
817 	/* require support for get_pauseparam ethtool op. */
818 	if (!hba->phys_dev->ethtool_ops ||
819 	    !hba->phys_dev->ethtool_ops->get_pauseparam)
820 		return -EOPNOTSUPP;
821 
822 	if (fc_set_mfs(lport, BNX2FC_MFS))
823 		return -EINVAL;
824 
825 	skb_queue_head_init(&port->fcoe_pending_queue);
826 	port->fcoe_pending_queue_active = 0;
827 	timer_setup(&port->timer, fcoe_queue_timer, 0);
828 
829 	fcoe_link_speed_update(lport);
830 
831 	if (!lport->vport) {
832 		if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
833 			wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
834 						 1, 0);
835 		BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
836 		fc_set_wwnn(lport, wwnn);
837 
838 		if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
839 			wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
840 						 2, 0);
841 
842 		BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
843 		fc_set_wwpn(lport, wwpn);
844 	}
845 
846 	return 0;
847 }
848 
849 static void bnx2fc_destroy_timer(struct timer_list *t)
850 {
851 	struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer);
852 
853 	printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
854 	       "Destroy compl not received!!\n");
855 	set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
856 	wake_up_interruptible(&hba->destroy_wait);
857 }
858 
859 /**
860  * bnx2fc_indicate_netevent - Generic netdev event handler
861  *
862  * @context:	adapter structure pointer
863  * @event:	event type
864  * @vlan_id:	vlan id - associated vlan id with this event
865  *
866  * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
867  * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
868  */
869 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
870 				     u16 vlan_id)
871 {
872 	struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
873 	struct fcoe_ctlr_device *cdev;
874 	struct fc_lport *lport;
875 	struct fc_lport *vport;
876 	struct bnx2fc_interface *interface, *tmp;
877 	struct fcoe_ctlr *ctlr;
878 	int wait_for_upload = 0;
879 	u32 link_possible = 1;
880 
881 	if (vlan_id != 0 && event != NETDEV_UNREGISTER)
882 		return;
883 
884 	switch (event) {
885 	case NETDEV_UP:
886 		if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
887 			printk(KERN_ERR "indicate_netevent: "\
888 					"hba is not UP!!\n");
889 		break;
890 
891 	case NETDEV_DOWN:
892 		clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
893 		clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
894 		link_possible = 0;
895 		break;
896 
897 	case NETDEV_GOING_DOWN:
898 		set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
899 		link_possible = 0;
900 		break;
901 
902 	case NETDEV_CHANGE:
903 		break;
904 
905 	case NETDEV_UNREGISTER:
906 		if (!vlan_id)
907 			return;
908 		mutex_lock(&bnx2fc_dev_lock);
909 		list_for_each_entry_safe(interface, tmp, &if_list, list) {
910 			if (interface->hba == hba &&
911 			    interface->vlan_id == (vlan_id & VLAN_VID_MASK))
912 				__bnx2fc_destroy(interface);
913 		}
914 		mutex_unlock(&bnx2fc_dev_lock);
915 		return;
916 
917 	default:
918 		return;
919 	}
920 
921 	mutex_lock(&bnx2fc_dev_lock);
922 	list_for_each_entry(interface, &if_list, list) {
923 
924 		if (interface->hba != hba)
925 			continue;
926 
927 		ctlr = bnx2fc_to_ctlr(interface);
928 		lport = ctlr->lp;
929 		BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
930 				interface->netdev->name, event);
931 
932 		fcoe_link_speed_update(lport);
933 
934 		cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
935 
936 		if (link_possible && !bnx2fc_link_ok(lport)) {
937 			switch (cdev->enabled) {
938 			case FCOE_CTLR_DISABLED:
939 				pr_info("Link up while interface is disabled.\n");
940 				break;
941 			case FCOE_CTLR_ENABLED:
942 			case FCOE_CTLR_UNUSED:
943 				/* Reset max recv frame size to default */
944 				fc_set_mfs(lport, BNX2FC_MFS);
945 				/*
946 				 * ctlr link up will only be handled during
947 				 * enable to avoid sending discovery
948 				 * solicitation on a stale vlan
949 				 */
950 				if (interface->enabled)
951 					fcoe_ctlr_link_up(ctlr);
952 			}
953 		} else if (fcoe_ctlr_link_down(ctlr)) {
954 			switch (cdev->enabled) {
955 			case FCOE_CTLR_DISABLED:
956 				pr_info("Link down while interface is disabled.\n");
957 				break;
958 			case FCOE_CTLR_ENABLED:
959 			case FCOE_CTLR_UNUSED:
960 				mutex_lock(&lport->lp_mutex);
961 				list_for_each_entry(vport, &lport->vports, list)
962 					fc_host_port_type(vport->host) =
963 					FC_PORTTYPE_UNKNOWN;
964 				mutex_unlock(&lport->lp_mutex);
965 				fc_host_port_type(lport->host) =
966 					FC_PORTTYPE_UNKNOWN;
967 				per_cpu_ptr(lport->stats,
968 					    get_cpu())->LinkFailureCount++;
969 				put_cpu();
970 				fcoe_clean_pending_queue(lport);
971 				wait_for_upload = 1;
972 			}
973 		}
974 	}
975 	mutex_unlock(&bnx2fc_dev_lock);
976 
977 	if (wait_for_upload) {
978 		clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
979 		init_waitqueue_head(&hba->shutdown_wait);
980 		BNX2FC_MISC_DBG("indicate_netevent "
981 				"num_ofld_sess = %d\n",
982 				hba->num_ofld_sess);
983 		hba->wait_for_link_down = 1;
984 		wait_event_interruptible(hba->shutdown_wait,
985 					 (hba->num_ofld_sess == 0));
986 		BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
987 				hba->num_ofld_sess);
988 		hba->wait_for_link_down = 0;
989 
990 		if (signal_pending(current))
991 			flush_signals(current);
992 	}
993 }
994 
995 static int bnx2fc_libfc_config(struct fc_lport *lport)
996 {
997 
998 	/* Set the function pointers set by bnx2fc driver */
999 	memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
1000 		sizeof(struct libfc_function_template));
1001 	fc_elsct_init(lport);
1002 	fc_exch_init(lport);
1003 	fc_disc_init(lport);
1004 	fc_disc_config(lport, lport);
1005 	return 0;
1006 }
1007 
1008 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
1009 {
1010 	int fcoe_min_xid, fcoe_max_xid;
1011 
1012 	fcoe_min_xid = hba->max_xid + 1;
1013 	if (nr_cpu_ids <= 2)
1014 		fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
1015 	else
1016 		fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
1017 	if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
1018 			       fcoe_max_xid, NULL)) {
1019 		printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
1020 		return -ENOMEM;
1021 	}
1022 
1023 	return 0;
1024 }
1025 
1026 static int bnx2fc_lport_config(struct fc_lport *lport)
1027 {
1028 	lport->link_up = 0;
1029 	lport->qfull = 0;
1030 	lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
1031 	lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
1032 	lport->e_d_tov = 2 * 1000;
1033 	lport->r_a_tov = 10 * 1000;
1034 
1035 	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1036 				FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1037 	lport->does_npiv = 1;
1038 
1039 	memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1040 	lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1041 
1042 	/* alloc stats structure */
1043 	if (fc_lport_init_stats(lport))
1044 		return -ENOMEM;
1045 
1046 	/* Finish fc_lport configuration */
1047 	fc_lport_config(lport);
1048 
1049 	return 0;
1050 }
1051 
1052 /**
1053  * bnx2fc_fip_recv - handle a received FIP frame.
1054  *
1055  * @skb: the received skb
1056  * @dev: associated &net_device
1057  * @ptype: the &packet_type structure which was used to register this handler.
1058  * @orig_dev: original receive &net_device, in case @ dev is a bond.
1059  *
1060  * Returns: 0 for success
1061  */
1062 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1063 			   struct packet_type *ptype,
1064 			   struct net_device *orig_dev)
1065 {
1066 	struct bnx2fc_interface *interface;
1067 	struct fcoe_ctlr *ctlr;
1068 	interface = container_of(ptype, struct bnx2fc_interface,
1069 				 fip_packet_type);
1070 	ctlr = bnx2fc_to_ctlr(interface);
1071 	fcoe_ctlr_recv(ctlr, skb);
1072 	return 0;
1073 }
1074 
1075 /**
1076  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1077  *
1078  * @lport: The local port
1079  * @addr: Location of data to copy
1080  *
1081  * Remove any previously-set unicast MAC filter.
1082  * Add secondary FCoE MAC address filter for our OUI.
1083  */
1084 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1085 {
1086 	struct fcoe_port *port = lport_priv(lport);
1087 
1088 	memcpy(port->data_src_addr, addr, ETH_ALEN);
1089 }
1090 
1091 /**
1092  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1093  *
1094  * @lport: libfc port
1095  */
1096 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1097 {
1098 	struct fcoe_port *port;
1099 
1100 	port = (struct fcoe_port *)lport_priv(lport);
1101 	return port->data_src_addr;
1102 }
1103 
1104 /**
1105  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1106  *
1107  * @fip: FCoE controller.
1108  * @skb: FIP Packet.
1109  */
1110 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1111 {
1112 	struct fip_header *fiph;
1113 	struct ethhdr *eth_hdr;
1114 	u16 op;
1115 	u8 sub;
1116 
1117 	fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
1118 	eth_hdr = (struct ethhdr *)skb_mac_header(skb);
1119 	op = ntohs(fiph->fip_op);
1120 	sub = fiph->fip_subcode;
1121 
1122 	if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
1123 		BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
1124 		    eth_hdr->h_source, eth_hdr->h_dest);
1125 
1126 	skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1127 	dev_queue_xmit(skb);
1128 }
1129 
1130 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1131 {
1132 	struct Scsi_Host *shost = vport_to_shost(vport);
1133 	struct fc_lport *n_port = shost_priv(shost);
1134 	struct fcoe_port *port = lport_priv(n_port);
1135 	struct bnx2fc_interface *interface = port->priv;
1136 	struct net_device *netdev = interface->netdev;
1137 	struct fc_lport *vn_port;
1138 	int rc;
1139 	char buf[32];
1140 
1141 	rc = fcoe_validate_vport_create(vport);
1142 	if (rc) {
1143 		fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1144 		printk(KERN_ERR PFX "Failed to create vport, "
1145 		       "WWPN (0x%s) already exists\n",
1146 		       buf);
1147 		return rc;
1148 	}
1149 
1150 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1151 		printk(KERN_ERR PFX "vn ports cannot be created on"
1152 			"this interface\n");
1153 		return -EIO;
1154 	}
1155 	rtnl_lock();
1156 	mutex_lock(&bnx2fc_dev_lock);
1157 	vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1158 	mutex_unlock(&bnx2fc_dev_lock);
1159 	rtnl_unlock();
1160 
1161 	if (!vn_port) {
1162 		printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1163 			netdev->name);
1164 		return -EIO;
1165 	}
1166 
1167 	if (bnx2fc_devloss_tmo)
1168 		fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
1169 
1170 	if (disabled) {
1171 		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1172 	} else {
1173 		vn_port->boot_time = jiffies;
1174 		fc_lport_init(vn_port);
1175 		fc_fabric_login(vn_port);
1176 		fc_vport_setlink(vn_port);
1177 	}
1178 	return 0;
1179 }
1180 
1181 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1182 {
1183 	struct bnx2fc_lport *blport, *tmp;
1184 
1185 	spin_lock_bh(&hba->hba_lock);
1186 	list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1187 		if (blport->lport == lport) {
1188 			list_del(&blport->list);
1189 			kfree(blport);
1190 		}
1191 	}
1192 	spin_unlock_bh(&hba->hba_lock);
1193 }
1194 
1195 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1196 {
1197 	struct Scsi_Host *shost = vport_to_shost(vport);
1198 	struct fc_lport *n_port = shost_priv(shost);
1199 	struct fc_lport *vn_port = vport->dd_data;
1200 	struct fcoe_port *port = lport_priv(vn_port);
1201 	struct bnx2fc_interface *interface = port->priv;
1202 	struct fc_lport *v_port;
1203 	bool found = false;
1204 
1205 	mutex_lock(&n_port->lp_mutex);
1206 	list_for_each_entry(v_port, &n_port->vports, list)
1207 		if (v_port->vport == vport) {
1208 			found = true;
1209 			break;
1210 		}
1211 
1212 	if (!found) {
1213 		mutex_unlock(&n_port->lp_mutex);
1214 		return -ENOENT;
1215 	}
1216 	list_del(&vn_port->list);
1217 	mutex_unlock(&n_port->lp_mutex);
1218 	bnx2fc_free_vport(interface->hba, port->lport);
1219 	bnx2fc_port_shutdown(port->lport);
1220 	bnx2fc_port_destroy(port);
1221 	bnx2fc_interface_put(interface);
1222 	return 0;
1223 }
1224 
1225 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1226 {
1227 	struct fc_lport *lport = vport->dd_data;
1228 
1229 	if (disable) {
1230 		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1231 		fc_fabric_logoff(lport);
1232 	} else {
1233 		lport->boot_time = jiffies;
1234 		fc_fabric_login(lport);
1235 		fc_vport_setlink(lport);
1236 	}
1237 	return 0;
1238 }
1239 
1240 
1241 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1242 {
1243 	struct net_device *netdev = interface->netdev;
1244 	struct net_device *physdev = interface->hba->phys_dev;
1245 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1246 	struct netdev_hw_addr *ha;
1247 	int sel_san_mac = 0;
1248 
1249 	/* setup Source MAC Address */
1250 	rcu_read_lock();
1251 	for_each_dev_addr(physdev, ha) {
1252 		BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1253 				ha->type);
1254 		printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1255 				ha->addr[1], ha->addr[2], ha->addr[3],
1256 				ha->addr[4], ha->addr[5]);
1257 
1258 		if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1259 		    (is_valid_ether_addr(ha->addr))) {
1260 			memcpy(ctlr->ctl_src_addr, ha->addr,
1261 			       ETH_ALEN);
1262 			sel_san_mac = 1;
1263 			BNX2FC_MISC_DBG("Found SAN MAC\n");
1264 		}
1265 	}
1266 	rcu_read_unlock();
1267 
1268 	if (!sel_san_mac)
1269 		return -ENODEV;
1270 
1271 	interface->fip_packet_type.func = bnx2fc_fip_recv;
1272 	interface->fip_packet_type.type = htons(ETH_P_FIP);
1273 	interface->fip_packet_type.dev = netdev;
1274 	dev_add_pack(&interface->fip_packet_type);
1275 
1276 	interface->fcoe_packet_type.func = bnx2fc_rcv;
1277 	interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1278 	interface->fcoe_packet_type.dev = netdev;
1279 	dev_add_pack(&interface->fcoe_packet_type);
1280 
1281 	return 0;
1282 }
1283 
1284 static int bnx2fc_attach_transport(void)
1285 {
1286 	bnx2fc_transport_template =
1287 		fc_attach_transport(&bnx2fc_transport_function);
1288 
1289 	if (bnx2fc_transport_template == NULL) {
1290 		printk(KERN_ERR PFX "Failed to attach FC transport\n");
1291 		return -ENODEV;
1292 	}
1293 
1294 	bnx2fc_vport_xport_template =
1295 		fc_attach_transport(&bnx2fc_vport_xport_function);
1296 	if (bnx2fc_vport_xport_template == NULL) {
1297 		printk(KERN_ERR PFX
1298 		       "Failed to attach FC transport for vport\n");
1299 		fc_release_transport(bnx2fc_transport_template);
1300 		bnx2fc_transport_template = NULL;
1301 		return -ENODEV;
1302 	}
1303 	return 0;
1304 }
1305 static void bnx2fc_release_transport(void)
1306 {
1307 	fc_release_transport(bnx2fc_transport_template);
1308 	fc_release_transport(bnx2fc_vport_xport_template);
1309 	bnx2fc_transport_template = NULL;
1310 	bnx2fc_vport_xport_template = NULL;
1311 }
1312 
1313 static void bnx2fc_interface_release(struct kref *kref)
1314 {
1315 	struct fcoe_ctlr_device *ctlr_dev;
1316 	struct bnx2fc_interface *interface;
1317 	struct fcoe_ctlr *ctlr;
1318 	struct net_device *netdev;
1319 
1320 	interface = container_of(kref, struct bnx2fc_interface, kref);
1321 	BNX2FC_MISC_DBG("Interface is being released\n");
1322 
1323 	ctlr = bnx2fc_to_ctlr(interface);
1324 	ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1325 	netdev = interface->netdev;
1326 
1327 	/* tear-down FIP controller */
1328 	if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1329 		fcoe_ctlr_destroy(ctlr);
1330 
1331 	fcoe_ctlr_device_delete(ctlr_dev);
1332 
1333 	dev_put(netdev);
1334 	module_put(THIS_MODULE);
1335 }
1336 
1337 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1338 {
1339 	kref_get(&interface->kref);
1340 }
1341 
1342 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1343 {
1344 	kref_put(&interface->kref, bnx2fc_interface_release);
1345 }
1346 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1347 {
1348 	/* Free the command manager */
1349 	if (hba->cmd_mgr) {
1350 		bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1351 		hba->cmd_mgr = NULL;
1352 	}
1353 	kfree(hba->tgt_ofld_list);
1354 	bnx2fc_unbind_pcidev(hba);
1355 	kfree(hba);
1356 }
1357 
1358 /**
1359  * bnx2fc_hba_create - create a new bnx2fc hba
1360  *
1361  * @cnic:	pointer to cnic device
1362  *
1363  * Creates a new FCoE hba on the given device.
1364  *
1365  */
1366 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1367 {
1368 	struct bnx2fc_hba *hba;
1369 	struct fcoe_capabilities *fcoe_cap;
1370 	int rc;
1371 
1372 	hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1373 	if (!hba) {
1374 		printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1375 		return NULL;
1376 	}
1377 	spin_lock_init(&hba->hba_lock);
1378 	mutex_init(&hba->hba_mutex);
1379 	mutex_init(&hba->hba_stats_mutex);
1380 
1381 	hba->cnic = cnic;
1382 
1383 	hba->max_tasks = cnic->max_fcoe_exchanges;
1384 	hba->elstm_xids = (hba->max_tasks / 2);
1385 	hba->max_outstanding_cmds = hba->elstm_xids;
1386 	hba->max_xid = (hba->max_tasks - 1);
1387 
1388 	rc = bnx2fc_bind_pcidev(hba);
1389 	if (rc) {
1390 		printk(KERN_ERR PFX "create_adapter:  bind error\n");
1391 		goto bind_err;
1392 	}
1393 	hba->phys_dev = cnic->netdev;
1394 	hba->next_conn_id = 0;
1395 
1396 	hba->tgt_ofld_list =
1397 		kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *),
1398 			GFP_KERNEL);
1399 	if (!hba->tgt_ofld_list) {
1400 		printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1401 		goto tgtofld_err;
1402 	}
1403 
1404 	hba->num_ofld_sess = 0;
1405 
1406 	hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1407 	if (!hba->cmd_mgr) {
1408 		printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1409 		goto cmgr_err;
1410 	}
1411 	fcoe_cap = &hba->fcoe_cap;
1412 
1413 	fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1414 					FCOE_IOS_PER_CONNECTION_SHIFT;
1415 	fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1416 					FCOE_LOGINS_PER_PORT_SHIFT;
1417 	fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1418 					FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1419 	fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1420 					FCOE_NPIV_WWN_PER_PORT_SHIFT;
1421 	fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1422 					FCOE_TARGETS_SUPPORTED_SHIFT;
1423 	fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1424 					FCOE_OUTSTANDING_COMMANDS_SHIFT;
1425 	fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1426 
1427 	init_waitqueue_head(&hba->shutdown_wait);
1428 	init_waitqueue_head(&hba->destroy_wait);
1429 	INIT_LIST_HEAD(&hba->vports);
1430 
1431 	return hba;
1432 
1433 cmgr_err:
1434 	kfree(hba->tgt_ofld_list);
1435 tgtofld_err:
1436 	bnx2fc_unbind_pcidev(hba);
1437 bind_err:
1438 	kfree(hba);
1439 	return NULL;
1440 }
1441 
1442 static struct bnx2fc_interface *
1443 bnx2fc_interface_create(struct bnx2fc_hba *hba,
1444 			struct net_device *netdev,
1445 			enum fip_mode fip_mode)
1446 {
1447 	struct fcoe_ctlr_device *ctlr_dev;
1448 	struct bnx2fc_interface *interface;
1449 	struct fcoe_ctlr *ctlr;
1450 	int size;
1451 	int rc = 0;
1452 
1453 	size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1454 	ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1455 					 size);
1456 	if (!ctlr_dev) {
1457 		printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1458 		return NULL;
1459 	}
1460 	ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1461 	ctlr->cdev = ctlr_dev;
1462 	interface = fcoe_ctlr_priv(ctlr);
1463 	dev_hold(netdev);
1464 	kref_init(&interface->kref);
1465 	interface->hba = hba;
1466 	interface->netdev = netdev;
1467 
1468 	/* Initialize FIP */
1469 	fcoe_ctlr_init(ctlr, fip_mode);
1470 	ctlr->send = bnx2fc_fip_send;
1471 	ctlr->update_mac = bnx2fc_update_src_mac;
1472 	ctlr->get_src_addr = bnx2fc_get_src_mac;
1473 	set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1474 
1475 	rc = bnx2fc_interface_setup(interface);
1476 	if (!rc)
1477 		return interface;
1478 
1479 	fcoe_ctlr_destroy(ctlr);
1480 	dev_put(netdev);
1481 	fcoe_ctlr_device_delete(ctlr_dev);
1482 	return NULL;
1483 }
1484 
1485 /**
1486  * bnx2fc_if_create - Create FCoE instance on a given interface
1487  *
1488  * @interface:	FCoE interface to create a local port on
1489  * @parent:	Device pointer to be the parent in sysfs for the SCSI host
1490  * @npiv:	Indicates if the port is vport or not
1491  *
1492  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1493  *
1494  * Returns:	Allocated fc_lport or an error pointer
1495  */
1496 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1497 				  struct device *parent, int npiv)
1498 {
1499 	struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1500 	struct fc_lport		*lport, *n_port;
1501 	struct fcoe_port	*port;
1502 	struct Scsi_Host	*shost;
1503 	struct fc_vport		*vport = dev_to_vport(parent);
1504 	struct bnx2fc_lport	*blport;
1505 	struct bnx2fc_hba	*hba = interface->hba;
1506 	int			rc = 0;
1507 
1508 	blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1509 	if (!blport) {
1510 		BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1511 		return NULL;
1512 	}
1513 
1514 	/* Allocate Scsi_Host structure */
1515 	bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1516 	if (!npiv)
1517 		lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1518 	else
1519 		lport = libfc_vport_create(vport, sizeof(*port));
1520 
1521 	if (!lport) {
1522 		printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1523 		goto free_blport;
1524 	}
1525 	shost = lport->host;
1526 	port = lport_priv(lport);
1527 	port->lport = lport;
1528 	port->priv = interface;
1529 	port->get_netdev = bnx2fc_netdev;
1530 
1531 	/* Configure fcoe_port */
1532 	rc = bnx2fc_lport_config(lport);
1533 	if (rc)
1534 		goto lp_config_err;
1535 
1536 	if (npiv) {
1537 		printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1538 			vport->node_name, vport->port_name);
1539 		fc_set_wwnn(lport, vport->node_name);
1540 		fc_set_wwpn(lport, vport->port_name);
1541 	}
1542 	/* Configure netdev and networking properties of the lport */
1543 	rc = bnx2fc_net_config(lport, interface->netdev);
1544 	if (rc) {
1545 		printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1546 		goto lp_config_err;
1547 	}
1548 
1549 	rc = bnx2fc_shost_config(lport, parent);
1550 	if (rc) {
1551 		printk(KERN_ERR PFX "Couldn't configure shost for %s\n",
1552 			interface->netdev->name);
1553 		goto lp_config_err;
1554 	}
1555 
1556 	/* Initialize the libfc library */
1557 	rc = bnx2fc_libfc_config(lport);
1558 	if (rc) {
1559 		printk(KERN_ERR PFX "Couldn't configure libfc\n");
1560 		goto shost_err;
1561 	}
1562 	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1563 
1564 	if (bnx2fc_devloss_tmo)
1565 		fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo;
1566 
1567 	/* Allocate exchange manager */
1568 	if (!npiv)
1569 		rc = bnx2fc_em_config(lport, hba);
1570 	else {
1571 		shost = vport_to_shost(vport);
1572 		n_port = shost_priv(shost);
1573 		rc = fc_exch_mgr_list_clone(n_port, lport);
1574 	}
1575 
1576 	if (rc) {
1577 		printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1578 		goto shost_err;
1579 	}
1580 
1581 	bnx2fc_interface_get(interface);
1582 
1583 	spin_lock_bh(&hba->hba_lock);
1584 	blport->lport = lport;
1585 	list_add_tail(&blport->list, &hba->vports);
1586 	spin_unlock_bh(&hba->hba_lock);
1587 
1588 	return lport;
1589 
1590 shost_err:
1591 	scsi_remove_host(shost);
1592 lp_config_err:
1593 	scsi_host_put(lport->host);
1594 free_blport:
1595 	kfree(blport);
1596 	return NULL;
1597 }
1598 
1599 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1600 {
1601 	/* Dont listen for Ethernet packets anymore */
1602 	__dev_remove_pack(&interface->fcoe_packet_type);
1603 	__dev_remove_pack(&interface->fip_packet_type);
1604 	synchronize_net();
1605 }
1606 
1607 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1608 {
1609 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1610 	struct fc_lport *lport = ctlr->lp;
1611 	struct fcoe_port *port = lport_priv(lport);
1612 	struct bnx2fc_hba *hba = interface->hba;
1613 
1614 	/* Stop the transmit retry timer */
1615 	del_timer_sync(&port->timer);
1616 
1617 	/* Free existing transmit skbs */
1618 	fcoe_clean_pending_queue(lport);
1619 
1620 	bnx2fc_net_cleanup(interface);
1621 
1622 	bnx2fc_free_vport(hba, lport);
1623 }
1624 
1625 static void bnx2fc_if_destroy(struct fc_lport *lport)
1626 {
1627 
1628 	/* Free queued packets for the receive thread */
1629 	bnx2fc_clean_rx_queue(lport);
1630 
1631 	/* Detach from scsi-ml */
1632 	fc_remove_host(lport->host);
1633 	scsi_remove_host(lport->host);
1634 
1635 	/*
1636 	 * Note that only the physical lport will have the exchange manager.
1637 	 * for vports, this function is NOP
1638 	 */
1639 	fc_exch_mgr_free(lport);
1640 
1641 	/* Free memory used by statistical counters */
1642 	fc_lport_free_stats(lport);
1643 
1644 	/* Release Scsi_Host */
1645 	scsi_host_put(lport->host);
1646 }
1647 
1648 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1649 {
1650 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1651 	struct fc_lport *lport = ctlr->lp;
1652 	struct fcoe_port *port = lport_priv(lport);
1653 
1654 	bnx2fc_interface_cleanup(interface);
1655 	bnx2fc_stop(interface);
1656 	list_del(&interface->list);
1657 	bnx2fc_port_destroy(port);
1658 	bnx2fc_interface_put(interface);
1659 }
1660 
1661 /**
1662  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1663  *
1664  * @netdev: The net device that the FCoE interface is on
1665  *
1666  * Called from sysfs.
1667  *
1668  * Returns: 0 for success
1669  */
1670 static int bnx2fc_destroy(struct net_device *netdev)
1671 {
1672 	struct bnx2fc_interface *interface = NULL;
1673 	struct workqueue_struct *timer_work_queue;
1674 	struct fcoe_ctlr *ctlr;
1675 	int rc = 0;
1676 
1677 	rtnl_lock();
1678 	mutex_lock(&bnx2fc_dev_lock);
1679 
1680 	interface = bnx2fc_interface_lookup(netdev);
1681 	ctlr = bnx2fc_to_ctlr(interface);
1682 	if (!interface || !ctlr->lp) {
1683 		rc = -ENODEV;
1684 		printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1685 		goto netdev_err;
1686 	}
1687 
1688 	timer_work_queue = interface->timer_work_queue;
1689 	__bnx2fc_destroy(interface);
1690 	destroy_workqueue(timer_work_queue);
1691 
1692 netdev_err:
1693 	mutex_unlock(&bnx2fc_dev_lock);
1694 	rtnl_unlock();
1695 	return rc;
1696 }
1697 
1698 static void bnx2fc_port_destroy(struct fcoe_port *port)
1699 {
1700 	struct fc_lport *lport;
1701 
1702 	lport = port->lport;
1703 	BNX2FC_HBA_DBG(lport, "Entered %s, destroying lport %p\n", __func__, lport);
1704 
1705 	bnx2fc_if_destroy(lport);
1706 }
1707 
1708 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1709 {
1710 	bnx2fc_free_fw_resc(hba);
1711 	bnx2fc_free_task_ctx(hba);
1712 }
1713 
1714 /**
1715  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1716  *			pci structure
1717  *
1718  * @hba:		Adapter instance
1719  */
1720 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1721 {
1722 	if (bnx2fc_setup_task_ctx(hba))
1723 		goto mem_err;
1724 
1725 	if (bnx2fc_setup_fw_resc(hba))
1726 		goto mem_err;
1727 
1728 	return 0;
1729 mem_err:
1730 	bnx2fc_unbind_adapter_devices(hba);
1731 	return -ENOMEM;
1732 }
1733 
1734 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1735 {
1736 	struct cnic_dev *cnic;
1737 	struct pci_dev *pdev;
1738 
1739 	if (!hba->cnic) {
1740 		printk(KERN_ERR PFX "cnic is NULL\n");
1741 		return -ENODEV;
1742 	}
1743 	cnic = hba->cnic;
1744 	pdev = hba->pcidev = cnic->pcidev;
1745 	if (!hba->pcidev)
1746 		return -ENODEV;
1747 
1748 	switch (pdev->device) {
1749 	case PCI_DEVICE_ID_NX2_57710:
1750 		strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1751 		break;
1752 	case PCI_DEVICE_ID_NX2_57711:
1753 		strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1754 		break;
1755 	case PCI_DEVICE_ID_NX2_57712:
1756 	case PCI_DEVICE_ID_NX2_57712_MF:
1757 	case PCI_DEVICE_ID_NX2_57712_VF:
1758 		strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1759 		break;
1760 	case PCI_DEVICE_ID_NX2_57800:
1761 	case PCI_DEVICE_ID_NX2_57800_MF:
1762 	case PCI_DEVICE_ID_NX2_57800_VF:
1763 		strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1764 		break;
1765 	case PCI_DEVICE_ID_NX2_57810:
1766 	case PCI_DEVICE_ID_NX2_57810_MF:
1767 	case PCI_DEVICE_ID_NX2_57810_VF:
1768 		strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1769 		break;
1770 	case PCI_DEVICE_ID_NX2_57840:
1771 	case PCI_DEVICE_ID_NX2_57840_MF:
1772 	case PCI_DEVICE_ID_NX2_57840_VF:
1773 	case PCI_DEVICE_ID_NX2_57840_2_20:
1774 	case PCI_DEVICE_ID_NX2_57840_4_10:
1775 		strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1776 		break;
1777 	default:
1778 		pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1779 		break;
1780 	}
1781 	pci_dev_get(hba->pcidev);
1782 	return 0;
1783 }
1784 
1785 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1786 {
1787 	if (hba->pcidev) {
1788 		hba->chip_num[0] = '\0';
1789 		pci_dev_put(hba->pcidev);
1790 	}
1791 	hba->pcidev = NULL;
1792 }
1793 
1794 /**
1795  * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1796  *
1797  * @handle:    transport handle pointing to adapter structure
1798  */
1799 static int bnx2fc_ulp_get_stats(void *handle)
1800 {
1801 	struct bnx2fc_hba *hba = handle;
1802 	struct cnic_dev *cnic;
1803 	struct fcoe_stats_info *stats_addr;
1804 
1805 	if (!hba)
1806 		return -EINVAL;
1807 
1808 	cnic = hba->cnic;
1809 	stats_addr = &cnic->stats_addr->fcoe_stat;
1810 	if (!stats_addr)
1811 		return -EINVAL;
1812 
1813 	strncpy(stats_addr->version, BNX2FC_VERSION,
1814 		sizeof(stats_addr->version));
1815 	stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1816 	stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1817 
1818 	return 0;
1819 }
1820 
1821 
1822 /**
1823  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1824  *
1825  * @handle:	transport handle pointing to adapter structure
1826  *
1827  * This function maps adapter structure to pcidev structure and initiates
1828  *	firmware handshake to enable/initialize on-chip FCoE components.
1829  *	This bnx2fc - cnic interface api callback is used after following
1830  *	conditions are met -
1831  *	a) underlying network interface is up (marked by event NETDEV_UP
1832  *		from netdev
1833  *	b) bnx2fc adatper structure is registered.
1834  */
1835 static void bnx2fc_ulp_start(void *handle)
1836 {
1837 	struct bnx2fc_hba *hba = handle;
1838 	struct bnx2fc_interface *interface;
1839 	struct fcoe_ctlr *ctlr;
1840 	struct fc_lport *lport;
1841 
1842 	mutex_lock(&bnx2fc_dev_lock);
1843 
1844 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1845 		bnx2fc_fw_init(hba);
1846 
1847 	BNX2FC_MISC_DBG("bnx2fc started.\n");
1848 
1849 	list_for_each_entry(interface, &if_list, list) {
1850 		if (interface->hba == hba) {
1851 			ctlr = bnx2fc_to_ctlr(interface);
1852 			lport = ctlr->lp;
1853 			/* Kick off Fabric discovery*/
1854 			printk(KERN_ERR PFX "ulp_init: start discovery\n");
1855 			lport->tt.frame_send = bnx2fc_xmit;
1856 			bnx2fc_start_disc(interface);
1857 		}
1858 	}
1859 
1860 	mutex_unlock(&bnx2fc_dev_lock);
1861 }
1862 
1863 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1864 {
1865 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
1866 	fc_fabric_logoff(lport);
1867 	fc_lport_destroy(lport);
1868 }
1869 
1870 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1871 {
1872 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1873 	struct fc_lport *lport;
1874 	struct fc_lport *vport;
1875 
1876 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1877 		return;
1878 
1879 	lport = ctlr->lp;
1880 	bnx2fc_port_shutdown(lport);
1881 
1882 	mutex_lock(&lport->lp_mutex);
1883 	list_for_each_entry(vport, &lport->vports, list)
1884 		fc_host_port_type(vport->host) =
1885 					FC_PORTTYPE_UNKNOWN;
1886 	mutex_unlock(&lport->lp_mutex);
1887 	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1888 	fcoe_ctlr_link_down(ctlr);
1889 	fcoe_clean_pending_queue(lport);
1890 }
1891 
1892 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1893 {
1894 #define BNX2FC_INIT_POLL_TIME		(1000 / HZ)
1895 	int rc = -1;
1896 	int i = HZ;
1897 
1898 	rc = bnx2fc_bind_adapter_devices(hba);
1899 	if (rc) {
1900 		printk(KERN_ALERT PFX
1901 			"bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1902 		goto err_out;
1903 	}
1904 
1905 	rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1906 	if (rc) {
1907 		printk(KERN_ALERT PFX
1908 			"bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1909 		goto err_unbind;
1910 	}
1911 
1912 	/*
1913 	 * Wait until the adapter init message is complete, and adapter
1914 	 * state is UP.
1915 	 */
1916 	while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1917 		msleep(BNX2FC_INIT_POLL_TIME);
1918 
1919 	if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1920 		printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1921 				"Ignoring...\n",
1922 				hba->cnic->netdev->name);
1923 		rc = -1;
1924 		goto err_unbind;
1925 	}
1926 
1927 
1928 	set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1929 	return 0;
1930 
1931 err_unbind:
1932 	bnx2fc_unbind_adapter_devices(hba);
1933 err_out:
1934 	return rc;
1935 }
1936 
1937 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1938 {
1939 	if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1940 		if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1941 			timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer,
1942 				    0);
1943 			hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1944 								jiffies;
1945 			add_timer(&hba->destroy_timer);
1946 			wait_event_interruptible(hba->destroy_wait,
1947 					test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1948 						 &hba->flags));
1949 			clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1950 			/* This should never happen */
1951 			if (signal_pending(current))
1952 				flush_signals(current);
1953 
1954 			del_timer_sync(&hba->destroy_timer);
1955 		}
1956 		bnx2fc_unbind_adapter_devices(hba);
1957 	}
1958 }
1959 
1960 /**
1961  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1962  *
1963  * @handle:	transport handle pointing to adapter structure
1964  *
1965  * Driver checks if adapter is already in shutdown mode, if not start
1966  *	the shutdown process.
1967  */
1968 static void bnx2fc_ulp_stop(void *handle)
1969 {
1970 	struct bnx2fc_hba *hba = handle;
1971 	struct bnx2fc_interface *interface;
1972 
1973 	printk(KERN_ERR "ULP_STOP\n");
1974 
1975 	mutex_lock(&bnx2fc_dev_lock);
1976 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1977 		goto exit;
1978 	list_for_each_entry(interface, &if_list, list) {
1979 		if (interface->hba == hba)
1980 			bnx2fc_stop(interface);
1981 	}
1982 	BUG_ON(hba->num_ofld_sess != 0);
1983 
1984 	mutex_lock(&hba->hba_mutex);
1985 	clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1986 	clear_bit(ADAPTER_STATE_GOING_DOWN,
1987 		  &hba->adapter_state);
1988 
1989 	clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1990 	mutex_unlock(&hba->hba_mutex);
1991 
1992 	bnx2fc_fw_destroy(hba);
1993 exit:
1994 	mutex_unlock(&bnx2fc_dev_lock);
1995 }
1996 
1997 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1998 {
1999 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
2000 	struct fc_lport *lport;
2001 	int wait_cnt = 0;
2002 
2003 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
2004 	/* Kick off FIP/FLOGI */
2005 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
2006 		printk(KERN_ERR PFX "Init not done yet\n");
2007 		return;
2008 	}
2009 
2010 	lport = ctlr->lp;
2011 	BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
2012 
2013 	if (!bnx2fc_link_ok(lport) && interface->enabled) {
2014 		BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
2015 		fcoe_ctlr_link_up(ctlr);
2016 		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2017 		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2018 	}
2019 
2020 	/* wait for the FCF to be selected before issuing FLOGI */
2021 	while (!ctlr->sel_fcf) {
2022 		msleep(250);
2023 		/* give up after 3 secs */
2024 		if (++wait_cnt > 12)
2025 			break;
2026 	}
2027 
2028 	/* Reset max receive frame size to default */
2029 	if (fc_set_mfs(lport, BNX2FC_MFS))
2030 		return;
2031 
2032 	fc_lport_init(lport);
2033 	fc_fabric_login(lport);
2034 }
2035 
2036 
2037 /**
2038  * bnx2fc_ulp_init - Initialize an adapter instance
2039  *
2040  * @dev :	cnic device handle
2041  * Called from cnic_register_driver() context to initialize all
2042  *	enumerated cnic devices. This routine allocates adapter structure
2043  *	and other device specific resources.
2044  */
2045 static void bnx2fc_ulp_init(struct cnic_dev *dev)
2046 {
2047 	struct bnx2fc_hba *hba;
2048 	int rc = 0;
2049 
2050 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
2051 	/* bnx2fc works only when bnx2x is loaded */
2052 	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
2053 	    (dev->max_fcoe_conn == 0)) {
2054 		printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
2055 				    " flags: %lx fcoe_conn: %d\n",
2056 			dev->netdev->name, dev->flags, dev->max_fcoe_conn);
2057 		return;
2058 	}
2059 
2060 	hba = bnx2fc_hba_create(dev);
2061 	if (!hba) {
2062 		printk(KERN_ERR PFX "hba initialization failed\n");
2063 		return;
2064 	}
2065 
2066 	pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
2067 
2068 	/* Add HBA to the adapter list */
2069 	mutex_lock(&bnx2fc_dev_lock);
2070 	list_add_tail(&hba->list, &adapter_list);
2071 	adapter_count++;
2072 	mutex_unlock(&bnx2fc_dev_lock);
2073 
2074 	dev->fcoe_cap = &hba->fcoe_cap;
2075 	clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2076 	rc = dev->register_device(dev, CNIC_ULP_FCOE,
2077 						(void *) hba);
2078 	if (rc)
2079 		printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2080 	else
2081 		set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2082 }
2083 
2084 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2085 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2086 {
2087 	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2088 
2089 	if (interface->enabled) {
2090 		if (!ctlr->lp) {
2091 			pr_err(PFX "__bnx2fc_disable: lport not found\n");
2092 			return -ENODEV;
2093 		} else {
2094 			interface->enabled = false;
2095 			fcoe_ctlr_link_down(ctlr);
2096 			fcoe_clean_pending_queue(ctlr->lp);
2097 		}
2098 	}
2099 	return 0;
2100 }
2101 
2102 /*
2103  * Deperecated: Use bnx2fc_enabled()
2104  */
2105 static int bnx2fc_disable(struct net_device *netdev)
2106 {
2107 	struct bnx2fc_interface *interface;
2108 	struct fcoe_ctlr *ctlr;
2109 	int rc = 0;
2110 
2111 	rtnl_lock();
2112 	mutex_lock(&bnx2fc_dev_lock);
2113 
2114 	interface = bnx2fc_interface_lookup(netdev);
2115 	ctlr = bnx2fc_to_ctlr(interface);
2116 
2117 	if (!interface) {
2118 		rc = -ENODEV;
2119 		pr_err(PFX "bnx2fc_disable: interface not found\n");
2120 	} else {
2121 		rc = __bnx2fc_disable(ctlr);
2122 	}
2123 	mutex_unlock(&bnx2fc_dev_lock);
2124 	rtnl_unlock();
2125 	return rc;
2126 }
2127 
2128 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2129 				      struct cnic_fc_npiv_tbl *npiv_tbl)
2130 {
2131 	struct fc_vport_identifiers vpid;
2132 	uint i, created = 0;
2133 	u64 wwnn = 0;
2134 	char wwpn_str[32];
2135 	char wwnn_str[32];
2136 
2137 	if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2138 		BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2139 		goto done;
2140 	}
2141 
2142 	/* Sanity check the first entry to make sure it's not 0 */
2143 	if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2144 	    wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2145 		BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2146 		goto done;
2147 	}
2148 
2149 	vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2150 	vpid.vport_type = FC_PORTTYPE_NPIV;
2151 	vpid.disable = false;
2152 
2153 	for (i = 0; i < npiv_tbl->count; i++) {
2154 		wwnn = wwn_to_u64(npiv_tbl->wwnn[i]);
2155 		if (wwnn == 0) {
2156 			/*
2157 			 * If we get a 0 element from for the WWNN then assume
2158 			 * the WWNN should be the same as the physical port.
2159 			 */
2160 			wwnn = lport->wwnn;
2161 		}
2162 		vpid.node_name = wwnn;
2163 		vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2164 		scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2165 		    "NPIV[%u]:%016llx-%016llx",
2166 		    created, vpid.port_name, vpid.node_name);
2167 		fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str));
2168 		fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str));
2169 		BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str,
2170 		    wwpn_str);
2171 		if (fc_vport_create(lport->host, 0, &vpid))
2172 			created++;
2173 		else
2174 			BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2175 	}
2176 done:
2177 	return created;
2178 }
2179 
2180 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2181 {
2182 	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2183 	struct bnx2fc_hba *hba;
2184 	struct cnic_fc_npiv_tbl *npiv_tbl;
2185 	struct fc_lport *lport;
2186 
2187 	if (!interface->enabled) {
2188 		if (!ctlr->lp) {
2189 			pr_err(PFX "__bnx2fc_enable: lport not found\n");
2190 			return -ENODEV;
2191 		} else if (!bnx2fc_link_ok(ctlr->lp)) {
2192 			fcoe_ctlr_link_up(ctlr);
2193 			interface->enabled = true;
2194 		}
2195 	}
2196 
2197 	/* Create static NPIV ports if any are contained in NVRAM */
2198 	hba = interface->hba;
2199 	lport = ctlr->lp;
2200 
2201 	if (!hba)
2202 		goto done;
2203 
2204 	if (!hba->cnic)
2205 		goto done;
2206 
2207 	if (!lport)
2208 		goto done;
2209 
2210 	if (!lport->host)
2211 		goto done;
2212 
2213 	if (!hba->cnic->get_fc_npiv_tbl)
2214 		goto done;
2215 
2216 	npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2217 	if (!npiv_tbl)
2218 		goto done;
2219 
2220 	if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2221 		goto done_free;
2222 
2223 	bnx2fc_npiv_create_vports(lport, npiv_tbl);
2224 done_free:
2225 	kfree(npiv_tbl);
2226 done:
2227 	return 0;
2228 }
2229 
2230 /*
2231  * Deprecated: Use bnx2fc_enabled()
2232  */
2233 static int bnx2fc_enable(struct net_device *netdev)
2234 {
2235 	struct bnx2fc_interface *interface;
2236 	struct fcoe_ctlr *ctlr;
2237 	int rc = 0;
2238 
2239 	rtnl_lock();
2240 	mutex_lock(&bnx2fc_dev_lock);
2241 
2242 	interface = bnx2fc_interface_lookup(netdev);
2243 	ctlr = bnx2fc_to_ctlr(interface);
2244 	if (!interface) {
2245 		rc = -ENODEV;
2246 		pr_err(PFX "bnx2fc_enable: interface not found\n");
2247 	} else {
2248 		rc = __bnx2fc_enable(ctlr);
2249 	}
2250 
2251 	mutex_unlock(&bnx2fc_dev_lock);
2252 	rtnl_unlock();
2253 	return rc;
2254 }
2255 
2256 /**
2257  * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2258  * @cdev: The FCoE Controller that is being enabled or disabled
2259  *
2260  * fcoe_sysfs will ensure that the state of 'enabled' has
2261  * changed, so no checking is necessary here. This routine simply
2262  * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2263  * When those routines are removed the functionality can be merged
2264  * here.
2265  */
2266 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2267 {
2268 	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2269 
2270 	switch (cdev->enabled) {
2271 	case FCOE_CTLR_ENABLED:
2272 		return __bnx2fc_enable(ctlr);
2273 	case FCOE_CTLR_DISABLED:
2274 		return __bnx2fc_disable(ctlr);
2275 	case FCOE_CTLR_UNUSED:
2276 	default:
2277 		return -ENOTSUPP;
2278 	}
2279 }
2280 
2281 enum bnx2fc_create_link_state {
2282 	BNX2FC_CREATE_LINK_DOWN,
2283 	BNX2FC_CREATE_LINK_UP,
2284 };
2285 
2286 /**
2287  * _bnx2fc_create() - Create bnx2fc FCoE interface
2288  * @netdev  :   The net_device object the Ethernet interface to create on
2289  * @fip_mode:   The FIP mode for this creation
2290  * @link_state: The ctlr link state on creation
2291  *
2292  * Called from either the libfcoe 'create' module parameter
2293  * via fcoe_create or from fcoe_syfs's ctlr_create file.
2294  *
2295  * libfcoe's 'create' module parameter is deprecated so some
2296  * consolidation of code can be done when that interface is
2297  * removed.
2298  *
2299  * Returns: 0 for success
2300  */
2301 static int _bnx2fc_create(struct net_device *netdev,
2302 			  enum fip_mode fip_mode,
2303 			  enum bnx2fc_create_link_state link_state)
2304 {
2305 	struct fcoe_ctlr_device *cdev;
2306 	struct fcoe_ctlr *ctlr;
2307 	struct bnx2fc_interface *interface;
2308 	struct bnx2fc_hba *hba;
2309 	struct net_device *phys_dev = netdev;
2310 	struct fc_lport *lport;
2311 	struct ethtool_drvinfo drvinfo;
2312 	int rc = 0;
2313 	int vlan_id = 0;
2314 
2315 	BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2316 	if (fip_mode != FIP_MODE_FABRIC) {
2317 		printk(KERN_ERR "fip mode not FABRIC\n");
2318 		return -EIO;
2319 	}
2320 
2321 	rtnl_lock();
2322 
2323 	mutex_lock(&bnx2fc_dev_lock);
2324 
2325 	if (!try_module_get(THIS_MODULE)) {
2326 		rc = -EINVAL;
2327 		goto mod_err;
2328 	}
2329 
2330 	/* obtain physical netdev */
2331 	if (is_vlan_dev(netdev))
2332 		phys_dev = vlan_dev_real_dev(netdev);
2333 
2334 	/* verify if the physical device is a netxtreme2 device */
2335 	if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2336 		memset(&drvinfo, 0, sizeof(drvinfo));
2337 		phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2338 		if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2339 			printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2340 			rc = -EINVAL;
2341 			goto netdev_err;
2342 		}
2343 	} else {
2344 		printk(KERN_ERR PFX "unable to obtain drv_info\n");
2345 		rc = -EINVAL;
2346 		goto netdev_err;
2347 	}
2348 
2349 	/* obtain interface and initialize rest of the structure */
2350 	hba = bnx2fc_hba_lookup(phys_dev);
2351 	if (!hba) {
2352 		rc = -ENODEV;
2353 		printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2354 		goto netdev_err;
2355 	}
2356 
2357 	if (bnx2fc_interface_lookup(netdev)) {
2358 		rc = -EEXIST;
2359 		goto netdev_err;
2360 	}
2361 
2362 	interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2363 	if (!interface) {
2364 		printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2365 		rc = -ENOMEM;
2366 		goto netdev_err;
2367 	}
2368 
2369 	if (is_vlan_dev(netdev)) {
2370 		vlan_id = vlan_dev_vlan_id(netdev);
2371 		interface->vlan_enabled = 1;
2372 	}
2373 
2374 	ctlr = bnx2fc_to_ctlr(interface);
2375 	cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2376 	interface->vlan_id = vlan_id;
2377 	interface->tm_timeout = BNX2FC_TM_TIMEOUT;
2378 
2379 	interface->timer_work_queue =
2380 			create_singlethread_workqueue("bnx2fc_timer_wq");
2381 	if (!interface->timer_work_queue) {
2382 		printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2383 		rc = -EINVAL;
2384 		goto ifput_err;
2385 	}
2386 
2387 	lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2388 	if (!lport) {
2389 		printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2390 			netdev->name);
2391 		rc = -EINVAL;
2392 		goto if_create_err;
2393 	}
2394 
2395 	/* Add interface to if_list */
2396 	list_add_tail(&interface->list, &if_list);
2397 
2398 	lport->boot_time = jiffies;
2399 
2400 	/* Make this master N_port */
2401 	ctlr->lp = lport;
2402 
2403 	if (link_state == BNX2FC_CREATE_LINK_UP)
2404 		cdev->enabled = FCOE_CTLR_ENABLED;
2405 	else
2406 		cdev->enabled = FCOE_CTLR_DISABLED;
2407 
2408 	if (link_state == BNX2FC_CREATE_LINK_UP &&
2409 	    !bnx2fc_link_ok(lport)) {
2410 		fcoe_ctlr_link_up(ctlr);
2411 		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2412 		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2413 	}
2414 
2415 	BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2416 	bnx2fc_start_disc(interface);
2417 
2418 	if (link_state == BNX2FC_CREATE_LINK_UP)
2419 		interface->enabled = true;
2420 
2421 	/*
2422 	 * Release from kref_init in bnx2fc_interface_setup, on success
2423 	 * lport should be holding a reference taken in bnx2fc_if_create
2424 	 */
2425 	bnx2fc_interface_put(interface);
2426 	/* put netdev that was held while calling dev_get_by_name */
2427 	mutex_unlock(&bnx2fc_dev_lock);
2428 	rtnl_unlock();
2429 	return 0;
2430 
2431 if_create_err:
2432 	destroy_workqueue(interface->timer_work_queue);
2433 ifput_err:
2434 	bnx2fc_net_cleanup(interface);
2435 	bnx2fc_interface_put(interface);
2436 	goto mod_err;
2437 netdev_err:
2438 	module_put(THIS_MODULE);
2439 mod_err:
2440 	mutex_unlock(&bnx2fc_dev_lock);
2441 	rtnl_unlock();
2442 	return rc;
2443 }
2444 
2445 /**
2446  * bnx2fc_create() - Create a bnx2fc interface
2447  * @netdev  : The net_device object the Ethernet interface to create on
2448  * @fip_mode: The FIP mode for this creation
2449  *
2450  * Called from fcoe transport
2451  *
2452  * Returns: 0 for success
2453  */
2454 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode)
2455 {
2456 	return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2457 }
2458 
2459 /**
2460  * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2461  * @netdev: The net_device to be used by the allocated FCoE Controller
2462  *
2463  * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2464  * in a link_down state. The allows the user an opportunity to configure
2465  * the FCoE Controller from sysfs before enabling the FCoE Controller.
2466  *
2467  * Creating in with this routine starts the FCoE Controller in Fabric
2468  * mode. The user can change to VN2VN or another mode before enabling.
2469  */
2470 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2471 {
2472 	return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2473 			      BNX2FC_CREATE_LINK_DOWN);
2474 }
2475 
2476 /**
2477  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2478  *
2479  * @cnic:	Pointer to cnic device instance
2480  *
2481  **/
2482 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2483 {
2484 	struct bnx2fc_hba *hba;
2485 
2486 	/* Called with bnx2fc_dev_lock held */
2487 	list_for_each_entry(hba, &adapter_list, list) {
2488 		if (hba->cnic == cnic)
2489 			return hba;
2490 	}
2491 	return NULL;
2492 }
2493 
2494 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2495 							*netdev)
2496 {
2497 	struct bnx2fc_interface *interface;
2498 
2499 	/* Called with bnx2fc_dev_lock held */
2500 	list_for_each_entry(interface, &if_list, list) {
2501 		if (interface->netdev == netdev)
2502 			return interface;
2503 	}
2504 	return NULL;
2505 }
2506 
2507 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2508 						      *phys_dev)
2509 {
2510 	struct bnx2fc_hba *hba;
2511 
2512 	/* Called with bnx2fc_dev_lock held */
2513 	list_for_each_entry(hba, &adapter_list, list) {
2514 		if (hba->phys_dev == phys_dev)
2515 			return hba;
2516 	}
2517 	printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2518 	return NULL;
2519 }
2520 
2521 /**
2522  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2523  *
2524  * @dev:	cnic device handle
2525  */
2526 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2527 {
2528 	struct bnx2fc_hba *hba;
2529 	struct bnx2fc_interface *interface, *tmp;
2530 
2531 	BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2532 
2533 	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2534 		printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2535 			dev->netdev->name, dev->flags);
2536 		return;
2537 	}
2538 
2539 	mutex_lock(&bnx2fc_dev_lock);
2540 	hba = bnx2fc_find_hba_for_cnic(dev);
2541 	if (!hba) {
2542 		printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2543 		       dev);
2544 		mutex_unlock(&bnx2fc_dev_lock);
2545 		return;
2546 	}
2547 
2548 	list_del_init(&hba->list);
2549 	adapter_count--;
2550 
2551 	list_for_each_entry_safe(interface, tmp, &if_list, list)
2552 		/* destroy not called yet, move to quiesced list */
2553 		if (interface->hba == hba)
2554 			__bnx2fc_destroy(interface);
2555 	mutex_unlock(&bnx2fc_dev_lock);
2556 
2557 	bnx2fc_ulp_stop(hba);
2558 	/* unregister cnic device */
2559 	if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2560 		hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2561 	bnx2fc_hba_destroy(hba);
2562 }
2563 
2564 static void bnx2fc_rport_terminate_io(struct fc_rport *rport)
2565 {
2566 	/* This is a no-op */
2567 }
2568 
2569 /**
2570  * bnx2fc_fcoe_reset - Resets the fcoe
2571  *
2572  * @shost: shost the reset is from
2573  *
2574  * Returns: always 0
2575  */
2576 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2577 {
2578 	struct fc_lport *lport = shost_priv(shost);
2579 	fc_lport_reset(lport);
2580 	return 0;
2581 }
2582 
2583 
2584 static bool bnx2fc_match(struct net_device *netdev)
2585 {
2586 	struct net_device *phys_dev = netdev;
2587 
2588 	mutex_lock(&bnx2fc_dev_lock);
2589 	if (is_vlan_dev(netdev))
2590 		phys_dev = vlan_dev_real_dev(netdev);
2591 
2592 	if (bnx2fc_hba_lookup(phys_dev)) {
2593 		mutex_unlock(&bnx2fc_dev_lock);
2594 		return true;
2595 	}
2596 
2597 	mutex_unlock(&bnx2fc_dev_lock);
2598 	return false;
2599 }
2600 
2601 
2602 static struct fcoe_transport bnx2fc_transport = {
2603 	.name = {"bnx2fc"},
2604 	.attached = false,
2605 	.list = LIST_HEAD_INIT(bnx2fc_transport.list),
2606 	.alloc = bnx2fc_ctlr_alloc,
2607 	.match = bnx2fc_match,
2608 	.create = bnx2fc_create,
2609 	.destroy = bnx2fc_destroy,
2610 	.enable = bnx2fc_enable,
2611 	.disable = bnx2fc_disable,
2612 };
2613 
2614 /**
2615  * bnx2fc_cpu_online - Create a receive thread for an  online CPU
2616  *
2617  * @cpu: cpu index for the online cpu
2618  */
2619 static int bnx2fc_cpu_online(unsigned int cpu)
2620 {
2621 	struct bnx2fc_percpu_s *p;
2622 	struct task_struct *thread;
2623 
2624 	p = &per_cpu(bnx2fc_percpu, cpu);
2625 
2626 	thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2627 					(void *)p, cpu_to_node(cpu),
2628 					"bnx2fc_thread/%d", cpu);
2629 	if (IS_ERR(thread))
2630 		return PTR_ERR(thread);
2631 
2632 	/* bind thread to the cpu */
2633 	kthread_bind(thread, cpu);
2634 	p->iothread = thread;
2635 	wake_up_process(thread);
2636 	return 0;
2637 }
2638 
2639 static int bnx2fc_cpu_offline(unsigned int cpu)
2640 {
2641 	struct bnx2fc_percpu_s *p;
2642 	struct task_struct *thread;
2643 	struct bnx2fc_work *work, *tmp;
2644 
2645 	BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2646 
2647 	/* Prevent any new work from being queued for this CPU */
2648 	p = &per_cpu(bnx2fc_percpu, cpu);
2649 	spin_lock_bh(&p->fp_work_lock);
2650 	thread = p->iothread;
2651 	p->iothread = NULL;
2652 
2653 	/* Free all work in the list */
2654 	list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2655 		list_del_init(&work->list);
2656 		bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data,
2657 					work->num_rq, work->task);
2658 		kfree(work);
2659 	}
2660 
2661 	spin_unlock_bh(&p->fp_work_lock);
2662 
2663 	if (thread)
2664 		kthread_stop(thread);
2665 	return 0;
2666 }
2667 
2668 static int bnx2fc_slave_configure(struct scsi_device *sdev)
2669 {
2670 	if (!bnx2fc_queue_depth)
2671 		return 0;
2672 
2673 	scsi_change_queue_depth(sdev, bnx2fc_queue_depth);
2674 	return 0;
2675 }
2676 
2677 static enum cpuhp_state bnx2fc_online_state;
2678 
2679 /**
2680  * bnx2fc_mod_init - module init entry point
2681  *
2682  * Initialize driver wide global data structures, and register
2683  * with cnic module
2684  **/
2685 static int __init bnx2fc_mod_init(void)
2686 {
2687 	struct fcoe_percpu_s *bg;
2688 	struct task_struct *l2_thread;
2689 	int rc = 0;
2690 	unsigned int cpu = 0;
2691 	struct bnx2fc_percpu_s *p;
2692 
2693 	printk(KERN_INFO PFX "%s", version);
2694 
2695 	/* register as a fcoe transport */
2696 	rc = fcoe_transport_attach(&bnx2fc_transport);
2697 	if (rc) {
2698 		printk(KERN_ERR "failed to register an fcoe transport, check "
2699 			"if libfcoe is loaded\n");
2700 		goto out;
2701 	}
2702 
2703 	INIT_LIST_HEAD(&adapter_list);
2704 	INIT_LIST_HEAD(&if_list);
2705 	mutex_init(&bnx2fc_dev_lock);
2706 	adapter_count = 0;
2707 
2708 	/* Attach FC transport template */
2709 	rc = bnx2fc_attach_transport();
2710 	if (rc)
2711 		goto detach_ft;
2712 
2713 	bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2714 	if (!bnx2fc_wq) {
2715 		rc = -ENOMEM;
2716 		goto release_bt;
2717 	}
2718 
2719 	bg = &bnx2fc_global;
2720 	skb_queue_head_init(&bg->fcoe_rx_list);
2721 	l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2722 				   (void *)bg,
2723 				   "bnx2fc_l2_thread");
2724 	if (IS_ERR(l2_thread)) {
2725 		rc = PTR_ERR(l2_thread);
2726 		goto free_wq;
2727 	}
2728 	wake_up_process(l2_thread);
2729 	spin_lock_bh(&bg->fcoe_rx_list.lock);
2730 	bg->kthread = l2_thread;
2731 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2732 
2733 	for_each_possible_cpu(cpu) {
2734 		p = &per_cpu(bnx2fc_percpu, cpu);
2735 		INIT_LIST_HEAD(&p->work_list);
2736 		spin_lock_init(&p->fp_work_lock);
2737 	}
2738 
2739 	rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online",
2740 			       bnx2fc_cpu_online, bnx2fc_cpu_offline);
2741 	if (rc < 0)
2742 		goto stop_thread;
2743 	bnx2fc_online_state = rc;
2744 
2745 	cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2746 	return 0;
2747 
2748 stop_thread:
2749 	kthread_stop(l2_thread);
2750 free_wq:
2751 	destroy_workqueue(bnx2fc_wq);
2752 release_bt:
2753 	bnx2fc_release_transport();
2754 detach_ft:
2755 	fcoe_transport_detach(&bnx2fc_transport);
2756 out:
2757 	return rc;
2758 }
2759 
2760 static void __exit bnx2fc_mod_exit(void)
2761 {
2762 	LIST_HEAD(to_be_deleted);
2763 	struct bnx2fc_hba *hba, *next;
2764 	struct fcoe_percpu_s *bg;
2765 	struct task_struct *l2_thread;
2766 	struct sk_buff *skb;
2767 
2768 	/*
2769 	 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2770 	 * it will have higher precedence than bnx2fc_dev_lock.
2771 	 * unregister_device() cannot be called with bnx2fc_dev_lock
2772 	 * held.
2773 	 */
2774 	mutex_lock(&bnx2fc_dev_lock);
2775 	list_splice_init(&adapter_list, &to_be_deleted);
2776 	adapter_count = 0;
2777 	mutex_unlock(&bnx2fc_dev_lock);
2778 
2779 	/* Unregister with cnic */
2780 	list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2781 		list_del_init(&hba->list);
2782 		printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2783 		       hba);
2784 		bnx2fc_ulp_stop(hba);
2785 		/* unregister cnic device */
2786 		if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2787 				       &hba->reg_with_cnic))
2788 			hba->cnic->unregister_device(hba->cnic,
2789 							 CNIC_ULP_FCOE);
2790 		bnx2fc_hba_destroy(hba);
2791 	}
2792 	cnic_unregister_driver(CNIC_ULP_FCOE);
2793 
2794 	/* Destroy global thread */
2795 	bg = &bnx2fc_global;
2796 	spin_lock_bh(&bg->fcoe_rx_list.lock);
2797 	l2_thread = bg->kthread;
2798 	bg->kthread = NULL;
2799 	while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2800 		kfree_skb(skb);
2801 
2802 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2803 
2804 	if (l2_thread)
2805 		kthread_stop(l2_thread);
2806 
2807 	cpuhp_remove_state(bnx2fc_online_state);
2808 
2809 	destroy_workqueue(bnx2fc_wq);
2810 	/*
2811 	 * detach from scsi transport
2812 	 * must happen after all destroys are done
2813 	 */
2814 	bnx2fc_release_transport();
2815 
2816 	/* detach from fcoe transport */
2817 	fcoe_transport_detach(&bnx2fc_transport);
2818 }
2819 
2820 module_init(bnx2fc_mod_init);
2821 module_exit(bnx2fc_mod_exit);
2822 
2823 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2824 	.set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2825 	.get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2826 	.get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2827 	.get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2828 	.get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2829 	.get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2830 	.get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2831 
2832 	.get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2833 	.get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2834 };
2835 
2836 static struct fc_function_template bnx2fc_transport_function = {
2837 	.show_host_node_name = 1,
2838 	.show_host_port_name = 1,
2839 	.show_host_supported_classes = 1,
2840 	.show_host_supported_fc4s = 1,
2841 	.show_host_active_fc4s = 1,
2842 	.show_host_maxframe_size = 1,
2843 
2844 	.show_host_port_id = 1,
2845 	.show_host_supported_speeds = 1,
2846 	.get_host_speed = fc_get_host_speed,
2847 	.show_host_speed = 1,
2848 	.show_host_port_type = 1,
2849 	.get_host_port_state = fc_get_host_port_state,
2850 	.show_host_port_state = 1,
2851 	.show_host_symbolic_name = 1,
2852 
2853 	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2854 				sizeof(struct bnx2fc_rport)),
2855 	.show_rport_maxframe_size = 1,
2856 	.show_rport_supported_classes = 1,
2857 
2858 	.show_host_fabric_name = 1,
2859 	.show_starget_node_name = 1,
2860 	.show_starget_port_name = 1,
2861 	.show_starget_port_id = 1,
2862 	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2863 	.show_rport_dev_loss_tmo = 1,
2864 	.get_fc_host_stats = bnx2fc_get_host_stats,
2865 
2866 	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2867 
2868 	.terminate_rport_io = bnx2fc_rport_terminate_io,
2869 
2870 	.vport_create = bnx2fc_vport_create,
2871 	.vport_delete = bnx2fc_vport_destroy,
2872 	.vport_disable = bnx2fc_vport_disable,
2873 	.bsg_request = fc_lport_bsg_request,
2874 };
2875 
2876 static struct fc_function_template bnx2fc_vport_xport_function = {
2877 	.show_host_node_name = 1,
2878 	.show_host_port_name = 1,
2879 	.show_host_supported_classes = 1,
2880 	.show_host_supported_fc4s = 1,
2881 	.show_host_active_fc4s = 1,
2882 	.show_host_maxframe_size = 1,
2883 
2884 	.show_host_port_id = 1,
2885 	.show_host_supported_speeds = 1,
2886 	.get_host_speed = fc_get_host_speed,
2887 	.show_host_speed = 1,
2888 	.show_host_port_type = 1,
2889 	.get_host_port_state = fc_get_host_port_state,
2890 	.show_host_port_state = 1,
2891 	.show_host_symbolic_name = 1,
2892 
2893 	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2894 				sizeof(struct bnx2fc_rport)),
2895 	.show_rport_maxframe_size = 1,
2896 	.show_rport_supported_classes = 1,
2897 
2898 	.show_host_fabric_name = 1,
2899 	.show_starget_node_name = 1,
2900 	.show_starget_port_name = 1,
2901 	.show_starget_port_id = 1,
2902 	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2903 	.show_rport_dev_loss_tmo = 1,
2904 	.get_fc_host_stats = fc_get_host_stats,
2905 	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2906 	.terminate_rport_io = fc_rport_terminate_io,
2907 	.bsg_request = fc_lport_bsg_request,
2908 };
2909 
2910 /*
2911  * Additional scsi_host attributes.
2912  */
2913 static ssize_t
2914 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
2915 	char *buf)
2916 {
2917 	struct Scsi_Host *shost = class_to_shost(dev);
2918 	struct fc_lport *lport = shost_priv(shost);
2919 	struct fcoe_port *port = lport_priv(lport);
2920 	struct bnx2fc_interface *interface = port->priv;
2921 
2922 	sprintf(buf, "%u\n", interface->tm_timeout);
2923 	return strlen(buf);
2924 }
2925 
2926 static ssize_t
2927 bnx2fc_tm_timeout_store(struct device *dev,
2928 	struct device_attribute *attr, const char *buf, size_t count)
2929 {
2930 	struct Scsi_Host *shost = class_to_shost(dev);
2931 	struct fc_lport *lport = shost_priv(shost);
2932 	struct fcoe_port *port = lport_priv(lport);
2933 	struct bnx2fc_interface *interface = port->priv;
2934 	int rval, val;
2935 
2936 	rval = kstrtouint(buf, 10, &val);
2937 	if (rval)
2938 		return rval;
2939 	if (val > 255)
2940 		return -ERANGE;
2941 
2942 	interface->tm_timeout = (u8)val;
2943 	return strlen(buf);
2944 }
2945 
2946 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
2947 	bnx2fc_tm_timeout_store);
2948 
2949 static struct attribute *bnx2fc_host_attrs[] = {
2950 	&dev_attr_tm_timeout.attr,
2951 	NULL,
2952 };
2953 
2954 ATTRIBUTE_GROUPS(bnx2fc_host);
2955 
2956 /*
2957  * scsi_host_template structure used while registering with SCSI-ml
2958  */
2959 static struct scsi_host_template bnx2fc_shost_template = {
2960 	.module			= THIS_MODULE,
2961 	.name			= "QLogic Offload FCoE Initiator",
2962 	.queuecommand		= bnx2fc_queuecommand,
2963 	.eh_timed_out		= fc_eh_timed_out,
2964 	.eh_abort_handler	= bnx2fc_eh_abort,	  /* abts */
2965 	.eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2966 	.eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2967 	.eh_host_reset_handler	= fc_eh_host_reset,
2968 	.slave_alloc		= fc_slave_alloc,
2969 	.change_queue_depth	= scsi_change_queue_depth,
2970 	.this_id		= -1,
2971 	.cmd_per_lun		= 3,
2972 	.sg_tablesize		= BNX2FC_MAX_BDS_PER_CMD,
2973 	.dma_boundary           = 0x7fff,
2974 	.max_sectors		= 0x3fbf,
2975 	.track_queue_depth	= 1,
2976 	.slave_configure	= bnx2fc_slave_configure,
2977 	.shost_groups		= bnx2fc_host_groups,
2978 };
2979 
2980 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2981 	.frame_send		= bnx2fc_xmit,
2982 	.elsct_send		= bnx2fc_elsct_send,
2983 	.fcp_abort_io		= bnx2fc_abort_io,
2984 	.fcp_cleanup		= bnx2fc_cleanup,
2985 	.get_lesb		= fcoe_get_lesb,
2986 	.rport_event_callback	= bnx2fc_rport_event_handler,
2987 };
2988 
2989 /*
2990  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2991  *			structure carrying callback function pointers
2992  */
2993 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2994 	.owner			= THIS_MODULE,
2995 	.cnic_init		= bnx2fc_ulp_init,
2996 	.cnic_exit		= bnx2fc_ulp_exit,
2997 	.cnic_start		= bnx2fc_ulp_start,
2998 	.cnic_stop		= bnx2fc_ulp_stop,
2999 	.indicate_kcqes		= bnx2fc_indicate_kcqe,
3000 	.indicate_netevent	= bnx2fc_indicate_netevent,
3001 	.cnic_get_stats		= bnx2fc_ulp_get_stats,
3002 };
3003