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1 /* bnx2fc_fcoe.c: QLogic Linux FCoE offload driver.
2  * This file contains the code that interacts with libfc, libfcoe,
3  * cnic modules to create FCoE instances, send/receive non-offloaded
4  * FIP/FCoE packets, listen to link events etc.
5  *
6  * Copyright (c) 2008-2013 Broadcom Corporation
7  * Copyright (c) 2014-2016 QLogic Corporation
8  * Copyright (c) 2016-2017 Cavium Inc.
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation.
13  *
14  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
15  */
16 
17 #include "bnx2fc.h"
18 
19 static struct list_head adapter_list;
20 static struct list_head if_list;
21 static u32 adapter_count;
22 static DEFINE_MUTEX(bnx2fc_dev_lock);
23 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
24 
25 #define DRV_MODULE_NAME		"bnx2fc"
26 #define DRV_MODULE_VERSION	BNX2FC_VERSION
27 #define DRV_MODULE_RELDATE	"October 15, 2015"
28 
29 
30 static char version[] =
31 		"QLogic FCoE Driver " DRV_MODULE_NAME \
32 		" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
33 
34 
35 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
36 MODULE_DESCRIPTION("QLogic FCoE Driver");
37 MODULE_LICENSE("GPL");
38 MODULE_VERSION(DRV_MODULE_VERSION);
39 
40 #define BNX2FC_MAX_QUEUE_DEPTH	256
41 #define BNX2FC_MIN_QUEUE_DEPTH	32
42 #define FCOE_WORD_TO_BYTE  4
43 
44 static struct scsi_transport_template	*bnx2fc_transport_template;
45 static struct scsi_transport_template	*bnx2fc_vport_xport_template;
46 
47 struct workqueue_struct *bnx2fc_wq;
48 
49 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
50  * Here the io threads are per cpu but the l2 thread is just one
51  */
52 struct fcoe_percpu_s bnx2fc_global;
53 static DEFINE_SPINLOCK(bnx2fc_global_lock);
54 
55 static struct cnic_ulp_ops bnx2fc_cnic_cb;
56 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
57 static struct scsi_host_template bnx2fc_shost_template;
58 static struct fc_function_template bnx2fc_transport_function;
59 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
60 static struct fc_function_template bnx2fc_vport_xport_function;
61 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode);
62 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
63 static int bnx2fc_destroy(struct net_device *net_device);
64 static int bnx2fc_enable(struct net_device *netdev);
65 static int bnx2fc_disable(struct net_device *netdev);
66 
67 /* fcoe_syfs control interface handlers */
68 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
69 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
70 
71 static void bnx2fc_recv_frame(struct sk_buff *skb);
72 
73 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
74 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
75 static int bnx2fc_lport_config(struct fc_lport *lport);
76 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
77 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
78 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
79 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
80 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
81 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
82 				  struct device *parent, int npiv);
83 static void bnx2fc_port_destroy(struct fcoe_port *port);
84 
85 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
86 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
87 							*phys_dev);
88 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
89 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
90 
91 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
92 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
93 
94 static void bnx2fc_port_shutdown(struct fc_lport *lport);
95 static void bnx2fc_stop(struct bnx2fc_interface *interface);
96 static int __init bnx2fc_mod_init(void);
97 static void __exit bnx2fc_mod_exit(void);
98 
99 unsigned int bnx2fc_debug_level;
100 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
101 MODULE_PARM_DESC(debug_logging,
102 		"Option to enable extended logging,\n"
103 		"\t\tDefault is 0 - no logging.\n"
104 		"\t\t0x01 - SCSI cmd error, cleanup.\n"
105 		"\t\t0x02 - Session setup, cleanup, etc.\n"
106 		"\t\t0x04 - lport events, link, mtu, etc.\n"
107 		"\t\t0x08 - ELS logs.\n"
108 		"\t\t0x10 - fcoe L2 fame related logs.\n"
109 		"\t\t0xff - LOG all messages.");
110 
111 static uint bnx2fc_devloss_tmo;
112 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO);
113 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports "
114 	"attached via bnx2fc.");
115 
116 static uint bnx2fc_max_luns = BNX2FC_MAX_LUN;
117 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO);
118 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default "
119 	"0xffff.");
120 
121 static uint bnx2fc_queue_depth;
122 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO);
123 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices "
124 	"attached via bnx2fc.");
125 
126 static uint bnx2fc_log_fka;
127 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
128 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
129 	"initiating a FIP keep alive when debug logging is enabled.");
130 
bnx2fc_netdev(const struct fc_lport * lport)131 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
132 {
133 	return ((struct bnx2fc_interface *)
134 		((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
135 }
136 
bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device * fcf_dev)137 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
138 {
139 	struct fcoe_ctlr_device *ctlr_dev =
140 		fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
141 	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
142 	struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
143 
144 	fcf_dev->vlan_id = fcoe->vlan_id;
145 }
146 
bnx2fc_clean_rx_queue(struct fc_lport * lp)147 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
148 {
149 	struct fcoe_percpu_s *bg;
150 	struct fcoe_rcv_info *fr;
151 	struct sk_buff_head *list;
152 	struct sk_buff *skb, *next;
153 
154 	bg = &bnx2fc_global;
155 	spin_lock_bh(&bg->fcoe_rx_list.lock);
156 	list = &bg->fcoe_rx_list;
157 	skb_queue_walk_safe(list, skb, next) {
158 		fr = fcoe_dev_from_skb(skb);
159 		if (fr->fr_dev == lp) {
160 			__skb_unlink(skb, list);
161 			kfree_skb(skb);
162 		}
163 	}
164 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
165 }
166 
bnx2fc_get_paged_crc_eof(struct sk_buff * skb,int tlen)167 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
168 {
169 	int rc;
170 	spin_lock(&bnx2fc_global_lock);
171 	rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
172 	spin_unlock(&bnx2fc_global_lock);
173 
174 	return rc;
175 }
176 
bnx2fc_abort_io(struct fc_lport * lport)177 static void bnx2fc_abort_io(struct fc_lport *lport)
178 {
179 	/*
180 	 * This function is no-op for bnx2fc, but we do
181 	 * not want to leave it as NULL either, as libfc
182 	 * can call the default function which is
183 	 * fc_fcp_abort_io.
184 	 */
185 }
186 
bnx2fc_cleanup(struct fc_lport * lport)187 static void bnx2fc_cleanup(struct fc_lport *lport)
188 {
189 	struct fcoe_port *port = lport_priv(lport);
190 	struct bnx2fc_interface *interface = port->priv;
191 	struct bnx2fc_hba *hba = interface->hba;
192 	struct bnx2fc_rport *tgt;
193 	int i;
194 
195 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
196 	mutex_lock(&hba->hba_mutex);
197 	spin_lock_bh(&hba->hba_lock);
198 	for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
199 		tgt = hba->tgt_ofld_list[i];
200 		if (tgt) {
201 			/* Cleanup IOs belonging to requested vport */
202 			if (tgt->port == port) {
203 				spin_unlock_bh(&hba->hba_lock);
204 				BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
205 				bnx2fc_flush_active_ios(tgt);
206 				spin_lock_bh(&hba->hba_lock);
207 			}
208 		}
209 	}
210 	spin_unlock_bh(&hba->hba_lock);
211 	mutex_unlock(&hba->hba_mutex);
212 }
213 
bnx2fc_xmit_l2_frame(struct bnx2fc_rport * tgt,struct fc_frame * fp)214 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
215 			     struct fc_frame *fp)
216 {
217 	struct fc_rport_priv *rdata = tgt->rdata;
218 	struct fc_frame_header *fh;
219 	int rc = 0;
220 
221 	fh = fc_frame_header_get(fp);
222 	BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
223 			"r_ctl = 0x%x\n", rdata->ids.port_id,
224 			ntohs(fh->fh_ox_id), fh->fh_r_ctl);
225 	if ((fh->fh_type == FC_TYPE_ELS) &&
226 	    (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
227 
228 		switch (fc_frame_payload_op(fp)) {
229 		case ELS_ADISC:
230 			rc = bnx2fc_send_adisc(tgt, fp);
231 			break;
232 		case ELS_LOGO:
233 			rc = bnx2fc_send_logo(tgt, fp);
234 			break;
235 		case ELS_RLS:
236 			rc = bnx2fc_send_rls(tgt, fp);
237 			break;
238 		default:
239 			break;
240 		}
241 	} else if ((fh->fh_type ==  FC_TYPE_BLS) &&
242 	    (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
243 		BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
244 	else {
245 		BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
246 				"rctl 0x%x thru non-offload path\n",
247 				fh->fh_type, fh->fh_r_ctl);
248 		return -ENODEV;
249 	}
250 	if (rc)
251 		return -ENOMEM;
252 	else
253 		return 0;
254 }
255 
256 /**
257  * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
258  *
259  * @lport:	the associated local port
260  * @fp:	the fc_frame to be transmitted
261  */
bnx2fc_xmit(struct fc_lport * lport,struct fc_frame * fp)262 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
263 {
264 	struct ethhdr		*eh;
265 	struct fcoe_crc_eof	*cp;
266 	struct sk_buff		*skb;
267 	struct fc_frame_header	*fh;
268 	struct bnx2fc_interface	*interface;
269 	struct fcoe_ctlr        *ctlr;
270 	struct bnx2fc_hba *hba;
271 	struct fcoe_port	*port;
272 	struct fcoe_hdr		*hp;
273 	struct bnx2fc_rport	*tgt;
274 	struct fc_stats		*stats;
275 	u8			sof, eof;
276 	u32			crc;
277 	unsigned int		hlen, tlen, elen;
278 	int			wlen, rc = 0;
279 
280 	port = (struct fcoe_port *)lport_priv(lport);
281 	interface = port->priv;
282 	ctlr = bnx2fc_to_ctlr(interface);
283 	hba = interface->hba;
284 
285 	fh = fc_frame_header_get(fp);
286 
287 	skb = fp_skb(fp);
288 	if (!lport->link_up) {
289 		BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
290 		kfree_skb(skb);
291 		return 0;
292 	}
293 
294 	if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
295 		if (!ctlr->sel_fcf) {
296 			BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
297 			kfree_skb(skb);
298 			return -EINVAL;
299 		}
300 		if (fcoe_ctlr_els_send(ctlr, lport, skb))
301 			return 0;
302 	}
303 
304 	sof = fr_sof(fp);
305 	eof = fr_eof(fp);
306 
307 	/*
308 	 * Snoop the frame header to check if the frame is for
309 	 * an offloaded session
310 	 */
311 	/*
312 	 * tgt_ofld_list access is synchronized using
313 	 * both hba mutex and hba lock. Atleast hba mutex or
314 	 * hba lock needs to be held for read access.
315 	 */
316 
317 	spin_lock_bh(&hba->hba_lock);
318 	tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
319 	if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
320 		/* This frame is for offloaded session */
321 		BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
322 				"port_id = 0x%x\n", ntoh24(fh->fh_d_id));
323 		spin_unlock_bh(&hba->hba_lock);
324 		rc = bnx2fc_xmit_l2_frame(tgt, fp);
325 		if (rc != -ENODEV) {
326 			kfree_skb(skb);
327 			return rc;
328 		}
329 	} else {
330 		spin_unlock_bh(&hba->hba_lock);
331 	}
332 
333 	elen = sizeof(struct ethhdr);
334 	hlen = sizeof(struct fcoe_hdr);
335 	tlen = sizeof(struct fcoe_crc_eof);
336 	wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
337 
338 	skb->ip_summed = CHECKSUM_NONE;
339 	crc = fcoe_fc_crc(fp);
340 
341 	/* copy port crc and eof to the skb buff */
342 	if (skb_is_nonlinear(skb)) {
343 		skb_frag_t *frag;
344 		if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
345 			kfree_skb(skb);
346 			return -ENOMEM;
347 		}
348 		frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
349 		cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
350 	} else {
351 		cp = skb_put(skb, tlen);
352 	}
353 
354 	memset(cp, 0, sizeof(*cp));
355 	cp->fcoe_eof = eof;
356 	cp->fcoe_crc32 = cpu_to_le32(~crc);
357 	if (skb_is_nonlinear(skb)) {
358 		kunmap_atomic(cp);
359 		cp = NULL;
360 	}
361 
362 	/* adjust skb network/transport offsets to match mac/fcoe/port */
363 	skb_push(skb, elen + hlen);
364 	skb_reset_mac_header(skb);
365 	skb_reset_network_header(skb);
366 	skb->mac_len = elen;
367 	skb->protocol = htons(ETH_P_FCOE);
368 	skb->dev = interface->netdev;
369 
370 	/* fill up mac and fcoe headers */
371 	eh = eth_hdr(skb);
372 	eh->h_proto = htons(ETH_P_FCOE);
373 	if (ctlr->map_dest)
374 		fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
375 	else
376 		/* insert GW address */
377 		memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
378 
379 	if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
380 		memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
381 	else
382 		memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
383 
384 	hp = (struct fcoe_hdr *)(eh + 1);
385 	memset(hp, 0, sizeof(*hp));
386 	if (FC_FCOE_VER)
387 		FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
388 	hp->fcoe_sof = sof;
389 
390 	/* fcoe lso, mss is in max_payload which is non-zero for FCP data */
391 	if (lport->seq_offload && fr_max_payload(fp)) {
392 		skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
393 		skb_shinfo(skb)->gso_size = fr_max_payload(fp);
394 	} else {
395 		skb_shinfo(skb)->gso_type = 0;
396 		skb_shinfo(skb)->gso_size = 0;
397 	}
398 
399 	/*update tx stats */
400 	stats = per_cpu_ptr(lport->stats, get_cpu());
401 	stats->TxFrames++;
402 	stats->TxWords += wlen;
403 	put_cpu();
404 
405 	/* send down to lld */
406 	fr_dev(fp) = lport;
407 	if (port->fcoe_pending_queue.qlen)
408 		fcoe_check_wait_queue(lport, skb);
409 	else if (fcoe_start_io(skb))
410 		fcoe_check_wait_queue(lport, skb);
411 
412 	return 0;
413 }
414 
415 /**
416  * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
417  *
418  * @skb:	the receive socket buffer
419  * @dev:	associated net device
420  * @ptype:	context
421  * @olddev:	last device
422  *
423  * This function receives the packet and builds FC frame and passes it up
424  */
bnx2fc_rcv(struct sk_buff * skb,struct net_device * dev,struct packet_type * ptype,struct net_device * olddev)425 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
426 		struct packet_type *ptype, struct net_device *olddev)
427 {
428 	struct fc_lport *lport;
429 	struct bnx2fc_interface *interface;
430 	struct fcoe_ctlr *ctlr;
431 	struct fcoe_rcv_info *fr;
432 	struct fcoe_percpu_s *bg;
433 	struct sk_buff *tmp_skb;
434 
435 	interface = container_of(ptype, struct bnx2fc_interface,
436 				 fcoe_packet_type);
437 	ctlr = bnx2fc_to_ctlr(interface);
438 	lport = ctlr->lp;
439 
440 	if (unlikely(lport == NULL)) {
441 		printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
442 		goto err;
443 	}
444 
445 	tmp_skb = skb_share_check(skb, GFP_ATOMIC);
446 	if (!tmp_skb)
447 		goto err;
448 
449 	skb = tmp_skb;
450 
451 	if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
452 		printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
453 		goto err;
454 	}
455 
456 	/*
457 	 * Check for minimum frame length, and make sure required FCoE
458 	 * and FC headers are pulled into the linear data area.
459 	 */
460 	if (unlikely((skb->len < FCOE_MIN_FRAME) ||
461 	    !pskb_may_pull(skb, FCOE_HEADER_LEN)))
462 		goto err;
463 
464 	skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
465 
466 	fr = fcoe_dev_from_skb(skb);
467 	fr->fr_dev = lport;
468 
469 	bg = &bnx2fc_global;
470 	spin_lock(&bg->fcoe_rx_list.lock);
471 
472 	__skb_queue_tail(&bg->fcoe_rx_list, skb);
473 	if (bg->fcoe_rx_list.qlen == 1)
474 		wake_up_process(bg->kthread);
475 
476 	spin_unlock(&bg->fcoe_rx_list.lock);
477 
478 	return 0;
479 err:
480 	kfree_skb(skb);
481 	return -1;
482 }
483 
bnx2fc_l2_rcv_thread(void * arg)484 static int bnx2fc_l2_rcv_thread(void *arg)
485 {
486 	struct fcoe_percpu_s *bg = arg;
487 	struct sk_buff *skb;
488 
489 	set_user_nice(current, MIN_NICE);
490 	set_current_state(TASK_INTERRUPTIBLE);
491 	while (!kthread_should_stop()) {
492 		schedule();
493 		spin_lock_bh(&bg->fcoe_rx_list.lock);
494 		while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
495 			spin_unlock_bh(&bg->fcoe_rx_list.lock);
496 			bnx2fc_recv_frame(skb);
497 			spin_lock_bh(&bg->fcoe_rx_list.lock);
498 		}
499 		__set_current_state(TASK_INTERRUPTIBLE);
500 		spin_unlock_bh(&bg->fcoe_rx_list.lock);
501 	}
502 	__set_current_state(TASK_RUNNING);
503 	return 0;
504 }
505 
506 
bnx2fc_recv_frame(struct sk_buff * skb)507 static void bnx2fc_recv_frame(struct sk_buff *skb)
508 {
509 	u64 crc_err;
510 	u32 fr_len, fr_crc;
511 	struct fc_lport *lport;
512 	struct fcoe_rcv_info *fr;
513 	struct fc_stats *stats;
514 	struct fc_frame_header *fh;
515 	struct fcoe_crc_eof crc_eof;
516 	struct fc_frame *fp;
517 	struct fc_lport *vn_port;
518 	struct fcoe_port *port, *phys_port;
519 	u8 *mac = NULL;
520 	u8 *dest_mac = NULL;
521 	struct fcoe_hdr *hp;
522 	struct bnx2fc_interface *interface;
523 	struct fcoe_ctlr *ctlr;
524 
525 	fr = fcoe_dev_from_skb(skb);
526 	lport = fr->fr_dev;
527 	if (unlikely(lport == NULL)) {
528 		printk(KERN_ERR PFX "Invalid lport struct\n");
529 		kfree_skb(skb);
530 		return;
531 	}
532 
533 	if (skb_is_nonlinear(skb))
534 		skb_linearize(skb);
535 	mac = eth_hdr(skb)->h_source;
536 	dest_mac = eth_hdr(skb)->h_dest;
537 
538 	/* Pull the header */
539 	hp = (struct fcoe_hdr *) skb_network_header(skb);
540 	fh = (struct fc_frame_header *) skb_transport_header(skb);
541 	skb_pull(skb, sizeof(struct fcoe_hdr));
542 	fr_len = skb->len - sizeof(struct fcoe_crc_eof);
543 
544 	stats = per_cpu_ptr(lport->stats, get_cpu());
545 	stats->RxFrames++;
546 	stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
547 	put_cpu();
548 
549 	fp = (struct fc_frame *)skb;
550 	fc_frame_init(fp);
551 	fr_dev(fp) = lport;
552 	fr_sof(fp) = hp->fcoe_sof;
553 	if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
554 		kfree_skb(skb);
555 		return;
556 	}
557 	fr_eof(fp) = crc_eof.fcoe_eof;
558 	fr_crc(fp) = crc_eof.fcoe_crc32;
559 	if (pskb_trim(skb, fr_len)) {
560 		kfree_skb(skb);
561 		return;
562 	}
563 
564 	phys_port = lport_priv(lport);
565 	interface = phys_port->priv;
566 	ctlr = bnx2fc_to_ctlr(interface);
567 
568 	fh = fc_frame_header_get(fp);
569 
570 	if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
571 		BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n",
572 		    dest_mac);
573 		kfree_skb(skb);
574 		return;
575 	}
576 
577 	vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
578 	if (vn_port) {
579 		port = lport_priv(vn_port);
580 		if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
581 			BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
582 			kfree_skb(skb);
583 			return;
584 		}
585 	}
586 	if (ctlr->state) {
587 		if (!ether_addr_equal(mac, ctlr->dest_addr)) {
588 			BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n",
589 			    mac, ctlr->dest_addr);
590 			kfree_skb(skb);
591 			return;
592 		}
593 	}
594 	if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
595 	    fh->fh_type == FC_TYPE_FCP) {
596 		/* Drop FCP data. We dont this in L2 path */
597 		kfree_skb(skb);
598 		return;
599 	}
600 	if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
601 	    fh->fh_type == FC_TYPE_ELS) {
602 		switch (fc_frame_payload_op(fp)) {
603 		case ELS_LOGO:
604 			if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
605 				/* drop non-FIP LOGO */
606 				kfree_skb(skb);
607 				return;
608 			}
609 			break;
610 		}
611 	}
612 
613 	if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
614 		/* Drop incoming ABTS */
615 		kfree_skb(skb);
616 		return;
617 	}
618 
619 	/*
620 	 * If the destination ID from the frame header does not match what we
621 	 * have on record for lport and the search for a NPIV port came up
622 	 * empty then this is not addressed to our port so simply drop it.
623 	 */
624 	if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
625 		BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
626 		    lport->port_id, ntoh24(fh->fh_d_id));
627 		kfree_skb(skb);
628 		return;
629 	}
630 
631 	fr_crc = le32_to_cpu(fr_crc(fp));
632 
633 	if (unlikely(fr_crc != ~crc32(~0, skb->data, fr_len))) {
634 		stats = per_cpu_ptr(lport->stats, get_cpu());
635 		crc_err = (stats->InvalidCRCCount++);
636 		put_cpu();
637 		if (crc_err < 5)
638 			printk(KERN_WARNING PFX "dropping frame with "
639 			       "CRC error\n");
640 		kfree_skb(skb);
641 		return;
642 	}
643 	fc_exch_recv(lport, fp);
644 }
645 
646 /**
647  * bnx2fc_percpu_io_thread - thread per cpu for ios
648  *
649  * @arg:	ptr to bnx2fc_percpu_info structure
650  */
bnx2fc_percpu_io_thread(void * arg)651 static int bnx2fc_percpu_io_thread(void *arg)
652 {
653 	struct bnx2fc_percpu_s *p = arg;
654 	struct bnx2fc_work *work, *tmp;
655 	LIST_HEAD(work_list);
656 
657 	set_user_nice(current, MIN_NICE);
658 	set_current_state(TASK_INTERRUPTIBLE);
659 	while (!kthread_should_stop()) {
660 		schedule();
661 		spin_lock_bh(&p->fp_work_lock);
662 		while (!list_empty(&p->work_list)) {
663 			list_splice_init(&p->work_list, &work_list);
664 			spin_unlock_bh(&p->fp_work_lock);
665 
666 			list_for_each_entry_safe(work, tmp, &work_list, list) {
667 				list_del_init(&work->list);
668 				bnx2fc_process_cq_compl(work->tgt, work->wqe,
669 							work->rq_data,
670 							work->num_rq,
671 							work->task);
672 				kfree(work);
673 			}
674 
675 			spin_lock_bh(&p->fp_work_lock);
676 		}
677 		__set_current_state(TASK_INTERRUPTIBLE);
678 		spin_unlock_bh(&p->fp_work_lock);
679 	}
680 	__set_current_state(TASK_RUNNING);
681 
682 	return 0;
683 }
684 
bnx2fc_get_host_stats(struct Scsi_Host * shost)685 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
686 {
687 	struct fc_host_statistics *bnx2fc_stats;
688 	struct fc_lport *lport = shost_priv(shost);
689 	struct fcoe_port *port = lport_priv(lport);
690 	struct bnx2fc_interface *interface = port->priv;
691 	struct bnx2fc_hba *hba = interface->hba;
692 	struct fcoe_statistics_params *fw_stats;
693 	int rc = 0;
694 
695 	fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
696 	if (!fw_stats)
697 		return NULL;
698 
699 	mutex_lock(&hba->hba_stats_mutex);
700 
701 	bnx2fc_stats = fc_get_host_stats(shost);
702 
703 	init_completion(&hba->stat_req_done);
704 	if (bnx2fc_send_stat_req(hba))
705 		goto unlock_stats_mutex;
706 	rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
707 	if (!rc) {
708 		BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
709 		goto unlock_stats_mutex;
710 	}
711 	BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
712 	bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
713 	BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
714 	bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
715 	BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
716 	bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
717 	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
718 	bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
719 	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
720 	bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
721 
722 	bnx2fc_stats->dumped_frames = 0;
723 	bnx2fc_stats->lip_count = 0;
724 	bnx2fc_stats->nos_count = 0;
725 	bnx2fc_stats->loss_of_sync_count = 0;
726 	bnx2fc_stats->loss_of_signal_count = 0;
727 	bnx2fc_stats->prim_seq_protocol_err_count = 0;
728 
729 	memcpy(&hba->prev_stats, hba->stats_buffer,
730 	       sizeof(struct fcoe_statistics_params));
731 
732 unlock_stats_mutex:
733 	mutex_unlock(&hba->hba_stats_mutex);
734 	return bnx2fc_stats;
735 }
736 
bnx2fc_shost_config(struct fc_lport * lport,struct device * dev)737 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
738 {
739 	struct fcoe_port *port = lport_priv(lport);
740 	struct bnx2fc_interface *interface = port->priv;
741 	struct bnx2fc_hba *hba = interface->hba;
742 	struct Scsi_Host *shost = lport->host;
743 	int rc = 0;
744 
745 	shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
746 	shost->max_lun = bnx2fc_max_luns;
747 	shost->max_id = BNX2FC_MAX_FCP_TGT;
748 	shost->max_channel = 0;
749 	if (lport->vport)
750 		shost->transportt = bnx2fc_vport_xport_template;
751 	else
752 		shost->transportt = bnx2fc_transport_template;
753 
754 	/* Add the new host to SCSI-ml */
755 	rc = scsi_add_host(lport->host, dev);
756 	if (rc) {
757 		printk(KERN_ERR PFX "Error on scsi_add_host\n");
758 		return rc;
759 	}
760 	if (!lport->vport)
761 		fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
762 	snprintf(fc_host_symbolic_name(lport->host), 256,
763 		 "%s (QLogic %s) v%s over %s",
764 		BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
765 		interface->netdev->name);
766 
767 	return 0;
768 }
769 
bnx2fc_link_ok(struct fc_lport * lport)770 static int bnx2fc_link_ok(struct fc_lport *lport)
771 {
772 	struct fcoe_port *port = lport_priv(lport);
773 	struct bnx2fc_interface *interface = port->priv;
774 	struct bnx2fc_hba *hba = interface->hba;
775 	struct net_device *dev = hba->phys_dev;
776 	int rc = 0;
777 
778 	if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
779 		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
780 	else {
781 		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
782 		rc = -1;
783 	}
784 	return rc;
785 }
786 
787 /**
788  * bnx2fc_get_link_state - get network link state
789  *
790  * @hba:	adapter instance pointer
791  *
792  * updates adapter structure flag based on netdev state
793  */
bnx2fc_get_link_state(struct bnx2fc_hba * hba)794 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
795 {
796 	if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
797 		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
798 	else
799 		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
800 }
801 
bnx2fc_net_config(struct fc_lport * lport,struct net_device * netdev)802 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
803 {
804 	struct bnx2fc_hba *hba;
805 	struct bnx2fc_interface *interface;
806 	struct fcoe_ctlr *ctlr;
807 	struct fcoe_port *port;
808 	u64 wwnn, wwpn;
809 
810 	port = lport_priv(lport);
811 	interface = port->priv;
812 	ctlr = bnx2fc_to_ctlr(interface);
813 	hba = interface->hba;
814 
815 	/* require support for get_pauseparam ethtool op. */
816 	if (!hba->phys_dev->ethtool_ops ||
817 	    !hba->phys_dev->ethtool_ops->get_pauseparam)
818 		return -EOPNOTSUPP;
819 
820 	if (fc_set_mfs(lport, BNX2FC_MFS))
821 		return -EINVAL;
822 
823 	skb_queue_head_init(&port->fcoe_pending_queue);
824 	port->fcoe_pending_queue_active = 0;
825 	timer_setup(&port->timer, fcoe_queue_timer, 0);
826 
827 	fcoe_link_speed_update(lport);
828 
829 	if (!lport->vport) {
830 		if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
831 			wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
832 						 1, 0);
833 		BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
834 		fc_set_wwnn(lport, wwnn);
835 
836 		if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
837 			wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
838 						 2, 0);
839 
840 		BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
841 		fc_set_wwpn(lport, wwpn);
842 	}
843 
844 	return 0;
845 }
846 
bnx2fc_destroy_timer(struct timer_list * t)847 static void bnx2fc_destroy_timer(struct timer_list *t)
848 {
849 	struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer);
850 
851 	printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
852 	       "Destroy compl not received!!\n");
853 	set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
854 	wake_up_interruptible(&hba->destroy_wait);
855 }
856 
857 /**
858  * bnx2fc_indicate_netevent - Generic netdev event handler
859  *
860  * @context:	adapter structure pointer
861  * @event:	event type
862  * @vlan_id:	vlan id - associated vlan id with this event
863  *
864  * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
865  * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
866  */
bnx2fc_indicate_netevent(void * context,unsigned long event,u16 vlan_id)867 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
868 				     u16 vlan_id)
869 {
870 	struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
871 	struct fcoe_ctlr_device *cdev;
872 	struct fc_lport *lport;
873 	struct fc_lport *vport;
874 	struct bnx2fc_interface *interface, *tmp;
875 	struct fcoe_ctlr *ctlr;
876 	int wait_for_upload = 0;
877 	u32 link_possible = 1;
878 
879 	if (vlan_id != 0 && event != NETDEV_UNREGISTER)
880 		return;
881 
882 	switch (event) {
883 	case NETDEV_UP:
884 		if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
885 			printk(KERN_ERR "indicate_netevent: "\
886 					"hba is not UP!!\n");
887 		break;
888 
889 	case NETDEV_DOWN:
890 		clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
891 		clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
892 		link_possible = 0;
893 		break;
894 
895 	case NETDEV_GOING_DOWN:
896 		set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
897 		link_possible = 0;
898 		break;
899 
900 	case NETDEV_CHANGE:
901 		break;
902 
903 	case NETDEV_UNREGISTER:
904 		if (!vlan_id)
905 			return;
906 		mutex_lock(&bnx2fc_dev_lock);
907 		list_for_each_entry_safe(interface, tmp, &if_list, list) {
908 			if (interface->hba == hba &&
909 			    interface->vlan_id == (vlan_id & VLAN_VID_MASK))
910 				__bnx2fc_destroy(interface);
911 		}
912 		mutex_unlock(&bnx2fc_dev_lock);
913 		return;
914 
915 	default:
916 		return;
917 	}
918 
919 	mutex_lock(&bnx2fc_dev_lock);
920 	list_for_each_entry(interface, &if_list, list) {
921 
922 		if (interface->hba != hba)
923 			continue;
924 
925 		ctlr = bnx2fc_to_ctlr(interface);
926 		lport = ctlr->lp;
927 		BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
928 				interface->netdev->name, event);
929 
930 		fcoe_link_speed_update(lport);
931 
932 		cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
933 
934 		if (link_possible && !bnx2fc_link_ok(lport)) {
935 			switch (cdev->enabled) {
936 			case FCOE_CTLR_DISABLED:
937 				pr_info("Link up while interface is disabled.\n");
938 				break;
939 			case FCOE_CTLR_ENABLED:
940 			case FCOE_CTLR_UNUSED:
941 				/* Reset max recv frame size to default */
942 				fc_set_mfs(lport, BNX2FC_MFS);
943 				/*
944 				 * ctlr link up will only be handled during
945 				 * enable to avoid sending discovery
946 				 * solicitation on a stale vlan
947 				 */
948 				if (interface->enabled)
949 					fcoe_ctlr_link_up(ctlr);
950 			}
951 		} else if (fcoe_ctlr_link_down(ctlr)) {
952 			switch (cdev->enabled) {
953 			case FCOE_CTLR_DISABLED:
954 				pr_info("Link down while interface is disabled.\n");
955 				break;
956 			case FCOE_CTLR_ENABLED:
957 			case FCOE_CTLR_UNUSED:
958 				mutex_lock(&lport->lp_mutex);
959 				list_for_each_entry(vport, &lport->vports, list)
960 					fc_host_port_type(vport->host) =
961 					FC_PORTTYPE_UNKNOWN;
962 				mutex_unlock(&lport->lp_mutex);
963 				fc_host_port_type(lport->host) =
964 					FC_PORTTYPE_UNKNOWN;
965 				per_cpu_ptr(lport->stats,
966 					    get_cpu())->LinkFailureCount++;
967 				put_cpu();
968 				fcoe_clean_pending_queue(lport);
969 				wait_for_upload = 1;
970 			}
971 		}
972 	}
973 	mutex_unlock(&bnx2fc_dev_lock);
974 
975 	if (wait_for_upload) {
976 		clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
977 		init_waitqueue_head(&hba->shutdown_wait);
978 		BNX2FC_MISC_DBG("indicate_netevent "
979 				"num_ofld_sess = %d\n",
980 				hba->num_ofld_sess);
981 		hba->wait_for_link_down = 1;
982 		wait_event_interruptible(hba->shutdown_wait,
983 					 (hba->num_ofld_sess == 0));
984 		BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
985 				hba->num_ofld_sess);
986 		hba->wait_for_link_down = 0;
987 
988 		if (signal_pending(current))
989 			flush_signals(current);
990 	}
991 }
992 
bnx2fc_libfc_config(struct fc_lport * lport)993 static int bnx2fc_libfc_config(struct fc_lport *lport)
994 {
995 
996 	/* Set the function pointers set by bnx2fc driver */
997 	memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
998 		sizeof(struct libfc_function_template));
999 	fc_elsct_init(lport);
1000 	fc_exch_init(lport);
1001 	fc_disc_init(lport);
1002 	fc_disc_config(lport, lport);
1003 	return 0;
1004 }
1005 
bnx2fc_em_config(struct fc_lport * lport,struct bnx2fc_hba * hba)1006 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
1007 {
1008 	int fcoe_min_xid, fcoe_max_xid;
1009 
1010 	fcoe_min_xid = hba->max_xid + 1;
1011 	if (nr_cpu_ids <= 2)
1012 		fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
1013 	else
1014 		fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
1015 	if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
1016 			       fcoe_max_xid, NULL)) {
1017 		printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
1018 		return -ENOMEM;
1019 	}
1020 
1021 	return 0;
1022 }
1023 
bnx2fc_lport_config(struct fc_lport * lport)1024 static int bnx2fc_lport_config(struct fc_lport *lport)
1025 {
1026 	lport->link_up = 0;
1027 	lport->qfull = 0;
1028 	lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
1029 	lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
1030 	lport->e_d_tov = 2 * 1000;
1031 	lport->r_a_tov = 10 * 1000;
1032 
1033 	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1034 				FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1035 	lport->does_npiv = 1;
1036 
1037 	memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1038 	lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1039 
1040 	/* alloc stats structure */
1041 	if (fc_lport_init_stats(lport))
1042 		return -ENOMEM;
1043 
1044 	/* Finish fc_lport configuration */
1045 	fc_lport_config(lport);
1046 
1047 	return 0;
1048 }
1049 
1050 /**
1051  * bnx2fc_fip_recv - handle a received FIP frame.
1052  *
1053  * @skb: the received skb
1054  * @dev: associated &net_device
1055  * @ptype: the &packet_type structure which was used to register this handler.
1056  * @orig_dev: original receive &net_device, in case @ dev is a bond.
1057  *
1058  * Returns: 0 for success
1059  */
bnx2fc_fip_recv(struct sk_buff * skb,struct net_device * dev,struct packet_type * ptype,struct net_device * orig_dev)1060 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1061 			   struct packet_type *ptype,
1062 			   struct net_device *orig_dev)
1063 {
1064 	struct bnx2fc_interface *interface;
1065 	struct fcoe_ctlr *ctlr;
1066 	interface = container_of(ptype, struct bnx2fc_interface,
1067 				 fip_packet_type);
1068 	ctlr = bnx2fc_to_ctlr(interface);
1069 	fcoe_ctlr_recv(ctlr, skb);
1070 	return 0;
1071 }
1072 
1073 /**
1074  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1075  *
1076  * @lport: The local port
1077  * @addr: Location of data to copy
1078  *
1079  * Remove any previously-set unicast MAC filter.
1080  * Add secondary FCoE MAC address filter for our OUI.
1081  */
bnx2fc_update_src_mac(struct fc_lport * lport,u8 * addr)1082 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1083 {
1084 	struct fcoe_port *port = lport_priv(lport);
1085 
1086 	memcpy(port->data_src_addr, addr, ETH_ALEN);
1087 }
1088 
1089 /**
1090  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1091  *
1092  * @lport: libfc port
1093  */
bnx2fc_get_src_mac(struct fc_lport * lport)1094 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1095 {
1096 	struct fcoe_port *port;
1097 
1098 	port = (struct fcoe_port *)lport_priv(lport);
1099 	return port->data_src_addr;
1100 }
1101 
1102 /**
1103  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1104  *
1105  * @fip: FCoE controller.
1106  * @skb: FIP Packet.
1107  */
bnx2fc_fip_send(struct fcoe_ctlr * fip,struct sk_buff * skb)1108 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1109 {
1110 	struct fip_header *fiph;
1111 	struct ethhdr *eth_hdr;
1112 	u16 op;
1113 	u8 sub;
1114 
1115 	fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
1116 	eth_hdr = (struct ethhdr *)skb_mac_header(skb);
1117 	op = ntohs(fiph->fip_op);
1118 	sub = fiph->fip_subcode;
1119 
1120 	if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
1121 		BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
1122 		    eth_hdr->h_source, eth_hdr->h_dest);
1123 
1124 	skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1125 	dev_queue_xmit(skb);
1126 }
1127 
bnx2fc_vport_create(struct fc_vport * vport,bool disabled)1128 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1129 {
1130 	struct Scsi_Host *shost = vport_to_shost(vport);
1131 	struct fc_lport *n_port = shost_priv(shost);
1132 	struct fcoe_port *port = lport_priv(n_port);
1133 	struct bnx2fc_interface *interface = port->priv;
1134 	struct net_device *netdev = interface->netdev;
1135 	struct fc_lport *vn_port;
1136 	int rc;
1137 	char buf[32];
1138 
1139 	rc = fcoe_validate_vport_create(vport);
1140 	if (rc) {
1141 		fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1142 		printk(KERN_ERR PFX "Failed to create vport, "
1143 		       "WWPN (0x%s) already exists\n",
1144 		       buf);
1145 		return rc;
1146 	}
1147 
1148 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1149 		printk(KERN_ERR PFX "vn ports cannot be created on"
1150 			"this interface\n");
1151 		return -EIO;
1152 	}
1153 	rtnl_lock();
1154 	mutex_lock(&bnx2fc_dev_lock);
1155 	vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1156 	mutex_unlock(&bnx2fc_dev_lock);
1157 	rtnl_unlock();
1158 
1159 	if (!vn_port) {
1160 		printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1161 			netdev->name);
1162 		return -EIO;
1163 	}
1164 
1165 	if (bnx2fc_devloss_tmo)
1166 		fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
1167 
1168 	if (disabled) {
1169 		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1170 	} else {
1171 		vn_port->boot_time = jiffies;
1172 		fc_lport_init(vn_port);
1173 		fc_fabric_login(vn_port);
1174 		fc_vport_setlink(vn_port);
1175 	}
1176 	return 0;
1177 }
1178 
bnx2fc_free_vport(struct bnx2fc_hba * hba,struct fc_lport * lport)1179 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1180 {
1181 	struct bnx2fc_lport *blport, *tmp;
1182 
1183 	spin_lock_bh(&hba->hba_lock);
1184 	list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1185 		if (blport->lport == lport) {
1186 			list_del(&blport->list);
1187 			kfree(blport);
1188 		}
1189 	}
1190 	spin_unlock_bh(&hba->hba_lock);
1191 }
1192 
bnx2fc_vport_destroy(struct fc_vport * vport)1193 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1194 {
1195 	struct Scsi_Host *shost = vport_to_shost(vport);
1196 	struct fc_lport *n_port = shost_priv(shost);
1197 	struct fc_lport *vn_port = vport->dd_data;
1198 	struct fcoe_port *port = lport_priv(vn_port);
1199 	struct bnx2fc_interface *interface = port->priv;
1200 	struct fc_lport *v_port;
1201 	bool found = false;
1202 
1203 	mutex_lock(&n_port->lp_mutex);
1204 	list_for_each_entry(v_port, &n_port->vports, list)
1205 		if (v_port->vport == vport) {
1206 			found = true;
1207 			break;
1208 		}
1209 
1210 	if (!found) {
1211 		mutex_unlock(&n_port->lp_mutex);
1212 		return -ENOENT;
1213 	}
1214 	list_del(&vn_port->list);
1215 	mutex_unlock(&n_port->lp_mutex);
1216 	bnx2fc_free_vport(interface->hba, port->lport);
1217 	bnx2fc_port_shutdown(port->lport);
1218 	bnx2fc_port_destroy(port);
1219 	bnx2fc_interface_put(interface);
1220 	return 0;
1221 }
1222 
bnx2fc_vport_disable(struct fc_vport * vport,bool disable)1223 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1224 {
1225 	struct fc_lport *lport = vport->dd_data;
1226 
1227 	if (disable) {
1228 		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1229 		fc_fabric_logoff(lport);
1230 	} else {
1231 		lport->boot_time = jiffies;
1232 		fc_fabric_login(lport);
1233 		fc_vport_setlink(lport);
1234 	}
1235 	return 0;
1236 }
1237 
1238 
bnx2fc_interface_setup(struct bnx2fc_interface * interface)1239 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1240 {
1241 	struct net_device *netdev = interface->netdev;
1242 	struct net_device *physdev = interface->hba->phys_dev;
1243 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1244 	struct netdev_hw_addr *ha;
1245 	int sel_san_mac = 0;
1246 
1247 	/* setup Source MAC Address */
1248 	rcu_read_lock();
1249 	for_each_dev_addr(physdev, ha) {
1250 		BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1251 				ha->type);
1252 		printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1253 				ha->addr[1], ha->addr[2], ha->addr[3],
1254 				ha->addr[4], ha->addr[5]);
1255 
1256 		if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1257 		    (is_valid_ether_addr(ha->addr))) {
1258 			memcpy(ctlr->ctl_src_addr, ha->addr,
1259 			       ETH_ALEN);
1260 			sel_san_mac = 1;
1261 			BNX2FC_MISC_DBG("Found SAN MAC\n");
1262 		}
1263 	}
1264 	rcu_read_unlock();
1265 
1266 	if (!sel_san_mac)
1267 		return -ENODEV;
1268 
1269 	interface->fip_packet_type.func = bnx2fc_fip_recv;
1270 	interface->fip_packet_type.type = htons(ETH_P_FIP);
1271 	interface->fip_packet_type.dev = netdev;
1272 	dev_add_pack(&interface->fip_packet_type);
1273 
1274 	interface->fcoe_packet_type.func = bnx2fc_rcv;
1275 	interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1276 	interface->fcoe_packet_type.dev = netdev;
1277 	dev_add_pack(&interface->fcoe_packet_type);
1278 
1279 	return 0;
1280 }
1281 
bnx2fc_attach_transport(void)1282 static int bnx2fc_attach_transport(void)
1283 {
1284 	bnx2fc_transport_template =
1285 		fc_attach_transport(&bnx2fc_transport_function);
1286 
1287 	if (bnx2fc_transport_template == NULL) {
1288 		printk(KERN_ERR PFX "Failed to attach FC transport\n");
1289 		return -ENODEV;
1290 	}
1291 
1292 	bnx2fc_vport_xport_template =
1293 		fc_attach_transport(&bnx2fc_vport_xport_function);
1294 	if (bnx2fc_vport_xport_template == NULL) {
1295 		printk(KERN_ERR PFX
1296 		       "Failed to attach FC transport for vport\n");
1297 		fc_release_transport(bnx2fc_transport_template);
1298 		bnx2fc_transport_template = NULL;
1299 		return -ENODEV;
1300 	}
1301 	return 0;
1302 }
bnx2fc_release_transport(void)1303 static void bnx2fc_release_transport(void)
1304 {
1305 	fc_release_transport(bnx2fc_transport_template);
1306 	fc_release_transport(bnx2fc_vport_xport_template);
1307 	bnx2fc_transport_template = NULL;
1308 	bnx2fc_vport_xport_template = NULL;
1309 }
1310 
bnx2fc_interface_release(struct kref * kref)1311 static void bnx2fc_interface_release(struct kref *kref)
1312 {
1313 	struct fcoe_ctlr_device *ctlr_dev;
1314 	struct bnx2fc_interface *interface;
1315 	struct fcoe_ctlr *ctlr;
1316 	struct net_device *netdev;
1317 
1318 	interface = container_of(kref, struct bnx2fc_interface, kref);
1319 	BNX2FC_MISC_DBG("Interface is being released\n");
1320 
1321 	ctlr = bnx2fc_to_ctlr(interface);
1322 	ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1323 	netdev = interface->netdev;
1324 
1325 	/* tear-down FIP controller */
1326 	if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1327 		fcoe_ctlr_destroy(ctlr);
1328 
1329 	fcoe_ctlr_device_delete(ctlr_dev);
1330 
1331 	dev_put(netdev);
1332 	module_put(THIS_MODULE);
1333 }
1334 
bnx2fc_interface_get(struct bnx2fc_interface * interface)1335 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1336 {
1337 	kref_get(&interface->kref);
1338 }
1339 
bnx2fc_interface_put(struct bnx2fc_interface * interface)1340 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1341 {
1342 	kref_put(&interface->kref, bnx2fc_interface_release);
1343 }
bnx2fc_hba_destroy(struct bnx2fc_hba * hba)1344 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1345 {
1346 	/* Free the command manager */
1347 	if (hba->cmd_mgr) {
1348 		bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1349 		hba->cmd_mgr = NULL;
1350 	}
1351 	kfree(hba->tgt_ofld_list);
1352 	bnx2fc_unbind_pcidev(hba);
1353 	kfree(hba);
1354 }
1355 
1356 /**
1357  * bnx2fc_hba_create - create a new bnx2fc hba
1358  *
1359  * @cnic:	pointer to cnic device
1360  *
1361  * Creates a new FCoE hba on the given device.
1362  *
1363  */
bnx2fc_hba_create(struct cnic_dev * cnic)1364 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1365 {
1366 	struct bnx2fc_hba *hba;
1367 	struct fcoe_capabilities *fcoe_cap;
1368 	int rc;
1369 
1370 	hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1371 	if (!hba) {
1372 		printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1373 		return NULL;
1374 	}
1375 	spin_lock_init(&hba->hba_lock);
1376 	mutex_init(&hba->hba_mutex);
1377 	mutex_init(&hba->hba_stats_mutex);
1378 
1379 	hba->cnic = cnic;
1380 
1381 	hba->max_tasks = cnic->max_fcoe_exchanges;
1382 	hba->elstm_xids = (hba->max_tasks / 2);
1383 	hba->max_outstanding_cmds = hba->elstm_xids;
1384 	hba->max_xid = (hba->max_tasks - 1);
1385 
1386 	rc = bnx2fc_bind_pcidev(hba);
1387 	if (rc) {
1388 		printk(KERN_ERR PFX "create_adapter:  bind error\n");
1389 		goto bind_err;
1390 	}
1391 	hba->phys_dev = cnic->netdev;
1392 	hba->next_conn_id = 0;
1393 
1394 	hba->tgt_ofld_list =
1395 		kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *),
1396 			GFP_KERNEL);
1397 	if (!hba->tgt_ofld_list) {
1398 		printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1399 		goto tgtofld_err;
1400 	}
1401 
1402 	hba->num_ofld_sess = 0;
1403 
1404 	hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1405 	if (!hba->cmd_mgr) {
1406 		printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1407 		goto cmgr_err;
1408 	}
1409 	fcoe_cap = &hba->fcoe_cap;
1410 
1411 	fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1412 					FCOE_IOS_PER_CONNECTION_SHIFT;
1413 	fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1414 					FCOE_LOGINS_PER_PORT_SHIFT;
1415 	fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1416 					FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1417 	fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1418 					FCOE_NPIV_WWN_PER_PORT_SHIFT;
1419 	fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1420 					FCOE_TARGETS_SUPPORTED_SHIFT;
1421 	fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1422 					FCOE_OUTSTANDING_COMMANDS_SHIFT;
1423 	fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1424 
1425 	init_waitqueue_head(&hba->shutdown_wait);
1426 	init_waitqueue_head(&hba->destroy_wait);
1427 	INIT_LIST_HEAD(&hba->vports);
1428 
1429 	return hba;
1430 
1431 cmgr_err:
1432 	kfree(hba->tgt_ofld_list);
1433 tgtofld_err:
1434 	bnx2fc_unbind_pcidev(hba);
1435 bind_err:
1436 	kfree(hba);
1437 	return NULL;
1438 }
1439 
1440 static struct bnx2fc_interface *
bnx2fc_interface_create(struct bnx2fc_hba * hba,struct net_device * netdev,enum fip_mode fip_mode)1441 bnx2fc_interface_create(struct bnx2fc_hba *hba,
1442 			struct net_device *netdev,
1443 			enum fip_mode fip_mode)
1444 {
1445 	struct fcoe_ctlr_device *ctlr_dev;
1446 	struct bnx2fc_interface *interface;
1447 	struct fcoe_ctlr *ctlr;
1448 	int size;
1449 	int rc = 0;
1450 
1451 	size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1452 	ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1453 					 size);
1454 	if (!ctlr_dev) {
1455 		printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1456 		return NULL;
1457 	}
1458 	ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1459 	ctlr->cdev = ctlr_dev;
1460 	interface = fcoe_ctlr_priv(ctlr);
1461 	dev_hold(netdev);
1462 	kref_init(&interface->kref);
1463 	interface->hba = hba;
1464 	interface->netdev = netdev;
1465 
1466 	/* Initialize FIP */
1467 	fcoe_ctlr_init(ctlr, fip_mode);
1468 	ctlr->send = bnx2fc_fip_send;
1469 	ctlr->update_mac = bnx2fc_update_src_mac;
1470 	ctlr->get_src_addr = bnx2fc_get_src_mac;
1471 	set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1472 
1473 	rc = bnx2fc_interface_setup(interface);
1474 	if (!rc)
1475 		return interface;
1476 
1477 	fcoe_ctlr_destroy(ctlr);
1478 	dev_put(netdev);
1479 	fcoe_ctlr_device_delete(ctlr_dev);
1480 	return NULL;
1481 }
1482 
1483 /**
1484  * bnx2fc_if_create - Create FCoE instance on a given interface
1485  *
1486  * @interface:	FCoE interface to create a local port on
1487  * @parent:	Device pointer to be the parent in sysfs for the SCSI host
1488  * @npiv:	Indicates if the port is vport or not
1489  *
1490  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1491  *
1492  * Returns:	Allocated fc_lport or an error pointer
1493  */
bnx2fc_if_create(struct bnx2fc_interface * interface,struct device * parent,int npiv)1494 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1495 				  struct device *parent, int npiv)
1496 {
1497 	struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1498 	struct fc_lport		*lport, *n_port;
1499 	struct fcoe_port	*port;
1500 	struct Scsi_Host	*shost;
1501 	struct fc_vport		*vport = dev_to_vport(parent);
1502 	struct bnx2fc_lport	*blport;
1503 	struct bnx2fc_hba	*hba = interface->hba;
1504 	int			rc = 0;
1505 
1506 	blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1507 	if (!blport) {
1508 		BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1509 		return NULL;
1510 	}
1511 
1512 	/* Allocate Scsi_Host structure */
1513 	bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1514 	if (!npiv)
1515 		lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1516 	else
1517 		lport = libfc_vport_create(vport, sizeof(*port));
1518 
1519 	if (!lport) {
1520 		printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1521 		goto free_blport;
1522 	}
1523 	shost = lport->host;
1524 	port = lport_priv(lport);
1525 	port->lport = lport;
1526 	port->priv = interface;
1527 	port->get_netdev = bnx2fc_netdev;
1528 
1529 	/* Configure fcoe_port */
1530 	rc = bnx2fc_lport_config(lport);
1531 	if (rc)
1532 		goto lp_config_err;
1533 
1534 	if (npiv) {
1535 		printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1536 			vport->node_name, vport->port_name);
1537 		fc_set_wwnn(lport, vport->node_name);
1538 		fc_set_wwpn(lport, vport->port_name);
1539 	}
1540 	/* Configure netdev and networking properties of the lport */
1541 	rc = bnx2fc_net_config(lport, interface->netdev);
1542 	if (rc) {
1543 		printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1544 		goto lp_config_err;
1545 	}
1546 
1547 	rc = bnx2fc_shost_config(lport, parent);
1548 	if (rc) {
1549 		printk(KERN_ERR PFX "Couldn't configure shost for %s\n",
1550 			interface->netdev->name);
1551 		goto lp_config_err;
1552 	}
1553 
1554 	/* Initialize the libfc library */
1555 	rc = bnx2fc_libfc_config(lport);
1556 	if (rc) {
1557 		printk(KERN_ERR PFX "Couldn't configure libfc\n");
1558 		goto shost_err;
1559 	}
1560 	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1561 
1562 	if (bnx2fc_devloss_tmo)
1563 		fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo;
1564 
1565 	/* Allocate exchange manager */
1566 	if (!npiv)
1567 		rc = bnx2fc_em_config(lport, hba);
1568 	else {
1569 		shost = vport_to_shost(vport);
1570 		n_port = shost_priv(shost);
1571 		rc = fc_exch_mgr_list_clone(n_port, lport);
1572 	}
1573 
1574 	if (rc) {
1575 		printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1576 		goto shost_err;
1577 	}
1578 
1579 	bnx2fc_interface_get(interface);
1580 
1581 	spin_lock_bh(&hba->hba_lock);
1582 	blport->lport = lport;
1583 	list_add_tail(&blport->list, &hba->vports);
1584 	spin_unlock_bh(&hba->hba_lock);
1585 
1586 	return lport;
1587 
1588 shost_err:
1589 	scsi_remove_host(shost);
1590 lp_config_err:
1591 	scsi_host_put(lport->host);
1592 free_blport:
1593 	kfree(blport);
1594 	return NULL;
1595 }
1596 
bnx2fc_net_cleanup(struct bnx2fc_interface * interface)1597 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1598 {
1599 	/* Dont listen for Ethernet packets anymore */
1600 	__dev_remove_pack(&interface->fcoe_packet_type);
1601 	__dev_remove_pack(&interface->fip_packet_type);
1602 	synchronize_net();
1603 }
1604 
bnx2fc_interface_cleanup(struct bnx2fc_interface * interface)1605 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1606 {
1607 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1608 	struct fc_lport *lport = ctlr->lp;
1609 	struct fcoe_port *port = lport_priv(lport);
1610 	struct bnx2fc_hba *hba = interface->hba;
1611 
1612 	/* Stop the transmit retry timer */
1613 	del_timer_sync(&port->timer);
1614 
1615 	/* Free existing transmit skbs */
1616 	fcoe_clean_pending_queue(lport);
1617 
1618 	bnx2fc_net_cleanup(interface);
1619 
1620 	bnx2fc_free_vport(hba, lport);
1621 }
1622 
bnx2fc_if_destroy(struct fc_lport * lport)1623 static void bnx2fc_if_destroy(struct fc_lport *lport)
1624 {
1625 
1626 	/* Free queued packets for the receive thread */
1627 	bnx2fc_clean_rx_queue(lport);
1628 
1629 	/* Detach from scsi-ml */
1630 	fc_remove_host(lport->host);
1631 	scsi_remove_host(lport->host);
1632 
1633 	/*
1634 	 * Note that only the physical lport will have the exchange manager.
1635 	 * for vports, this function is NOP
1636 	 */
1637 	fc_exch_mgr_free(lport);
1638 
1639 	/* Free memory used by statistical counters */
1640 	fc_lport_free_stats(lport);
1641 
1642 	/* Release Scsi_Host */
1643 	scsi_host_put(lport->host);
1644 }
1645 
__bnx2fc_destroy(struct bnx2fc_interface * interface)1646 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1647 {
1648 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1649 	struct fc_lport *lport = ctlr->lp;
1650 	struct fcoe_port *port = lport_priv(lport);
1651 
1652 	bnx2fc_interface_cleanup(interface);
1653 	bnx2fc_stop(interface);
1654 	list_del(&interface->list);
1655 	bnx2fc_port_destroy(port);
1656 	bnx2fc_interface_put(interface);
1657 }
1658 
1659 /**
1660  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1661  *
1662  * @netdev: The net device that the FCoE interface is on
1663  *
1664  * Called from sysfs.
1665  *
1666  * Returns: 0 for success
1667  */
bnx2fc_destroy(struct net_device * netdev)1668 static int bnx2fc_destroy(struct net_device *netdev)
1669 {
1670 	struct bnx2fc_interface *interface = NULL;
1671 	struct workqueue_struct *timer_work_queue;
1672 	struct fcoe_ctlr *ctlr;
1673 	int rc = 0;
1674 
1675 	rtnl_lock();
1676 	mutex_lock(&bnx2fc_dev_lock);
1677 
1678 	interface = bnx2fc_interface_lookup(netdev);
1679 	ctlr = bnx2fc_to_ctlr(interface);
1680 	if (!interface || !ctlr->lp) {
1681 		rc = -ENODEV;
1682 		printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1683 		goto netdev_err;
1684 	}
1685 
1686 	timer_work_queue = interface->timer_work_queue;
1687 	__bnx2fc_destroy(interface);
1688 	destroy_workqueue(timer_work_queue);
1689 
1690 netdev_err:
1691 	mutex_unlock(&bnx2fc_dev_lock);
1692 	rtnl_unlock();
1693 	return rc;
1694 }
1695 
bnx2fc_port_destroy(struct fcoe_port * port)1696 static void bnx2fc_port_destroy(struct fcoe_port *port)
1697 {
1698 	struct fc_lport *lport;
1699 
1700 	lport = port->lport;
1701 	BNX2FC_HBA_DBG(lport, "Entered %s, destroying lport %p\n", __func__, lport);
1702 
1703 	bnx2fc_if_destroy(lport);
1704 }
1705 
bnx2fc_unbind_adapter_devices(struct bnx2fc_hba * hba)1706 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1707 {
1708 	bnx2fc_free_fw_resc(hba);
1709 	bnx2fc_free_task_ctx(hba);
1710 }
1711 
1712 /**
1713  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1714  *			pci structure
1715  *
1716  * @hba:		Adapter instance
1717  */
bnx2fc_bind_adapter_devices(struct bnx2fc_hba * hba)1718 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1719 {
1720 	if (bnx2fc_setup_task_ctx(hba))
1721 		goto mem_err;
1722 
1723 	if (bnx2fc_setup_fw_resc(hba))
1724 		goto mem_err;
1725 
1726 	return 0;
1727 mem_err:
1728 	bnx2fc_unbind_adapter_devices(hba);
1729 	return -ENOMEM;
1730 }
1731 
bnx2fc_bind_pcidev(struct bnx2fc_hba * hba)1732 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1733 {
1734 	struct cnic_dev *cnic;
1735 	struct pci_dev *pdev;
1736 
1737 	if (!hba->cnic) {
1738 		printk(KERN_ERR PFX "cnic is NULL\n");
1739 		return -ENODEV;
1740 	}
1741 	cnic = hba->cnic;
1742 	pdev = hba->pcidev = cnic->pcidev;
1743 	if (!hba->pcidev)
1744 		return -ENODEV;
1745 
1746 	switch (pdev->device) {
1747 	case PCI_DEVICE_ID_NX2_57710:
1748 		strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1749 		break;
1750 	case PCI_DEVICE_ID_NX2_57711:
1751 		strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1752 		break;
1753 	case PCI_DEVICE_ID_NX2_57712:
1754 	case PCI_DEVICE_ID_NX2_57712_MF:
1755 	case PCI_DEVICE_ID_NX2_57712_VF:
1756 		strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1757 		break;
1758 	case PCI_DEVICE_ID_NX2_57800:
1759 	case PCI_DEVICE_ID_NX2_57800_MF:
1760 	case PCI_DEVICE_ID_NX2_57800_VF:
1761 		strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1762 		break;
1763 	case PCI_DEVICE_ID_NX2_57810:
1764 	case PCI_DEVICE_ID_NX2_57810_MF:
1765 	case PCI_DEVICE_ID_NX2_57810_VF:
1766 		strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1767 		break;
1768 	case PCI_DEVICE_ID_NX2_57840:
1769 	case PCI_DEVICE_ID_NX2_57840_MF:
1770 	case PCI_DEVICE_ID_NX2_57840_VF:
1771 	case PCI_DEVICE_ID_NX2_57840_2_20:
1772 	case PCI_DEVICE_ID_NX2_57840_4_10:
1773 		strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1774 		break;
1775 	default:
1776 		pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1777 		break;
1778 	}
1779 	pci_dev_get(hba->pcidev);
1780 	return 0;
1781 }
1782 
bnx2fc_unbind_pcidev(struct bnx2fc_hba * hba)1783 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1784 {
1785 	if (hba->pcidev) {
1786 		hba->chip_num[0] = '\0';
1787 		pci_dev_put(hba->pcidev);
1788 	}
1789 	hba->pcidev = NULL;
1790 }
1791 
1792 /**
1793  * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1794  *
1795  * @handle:    transport handle pointing to adapter struture
1796  */
bnx2fc_ulp_get_stats(void * handle)1797 static int bnx2fc_ulp_get_stats(void *handle)
1798 {
1799 	struct bnx2fc_hba *hba = handle;
1800 	struct cnic_dev *cnic;
1801 	struct fcoe_stats_info *stats_addr;
1802 
1803 	if (!hba)
1804 		return -EINVAL;
1805 
1806 	cnic = hba->cnic;
1807 	stats_addr = &cnic->stats_addr->fcoe_stat;
1808 	if (!stats_addr)
1809 		return -EINVAL;
1810 
1811 	strncpy(stats_addr->version, BNX2FC_VERSION,
1812 		sizeof(stats_addr->version));
1813 	stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1814 	stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1815 
1816 	return 0;
1817 }
1818 
1819 
1820 /**
1821  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1822  *
1823  * @handle:	transport handle pointing to adapter structure
1824  *
1825  * This function maps adapter structure to pcidev structure and initiates
1826  *	firmware handshake to enable/initialize on-chip FCoE components.
1827  *	This bnx2fc - cnic interface api callback is used after following
1828  *	conditions are met -
1829  *	a) underlying network interface is up (marked by event NETDEV_UP
1830  *		from netdev
1831  *	b) bnx2fc adatper structure is registered.
1832  */
bnx2fc_ulp_start(void * handle)1833 static void bnx2fc_ulp_start(void *handle)
1834 {
1835 	struct bnx2fc_hba *hba = handle;
1836 	struct bnx2fc_interface *interface;
1837 	struct fcoe_ctlr *ctlr;
1838 	struct fc_lport *lport;
1839 
1840 	mutex_lock(&bnx2fc_dev_lock);
1841 
1842 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1843 		bnx2fc_fw_init(hba);
1844 
1845 	BNX2FC_MISC_DBG("bnx2fc started.\n");
1846 
1847 	list_for_each_entry(interface, &if_list, list) {
1848 		if (interface->hba == hba) {
1849 			ctlr = bnx2fc_to_ctlr(interface);
1850 			lport = ctlr->lp;
1851 			/* Kick off Fabric discovery*/
1852 			printk(KERN_ERR PFX "ulp_init: start discovery\n");
1853 			lport->tt.frame_send = bnx2fc_xmit;
1854 			bnx2fc_start_disc(interface);
1855 		}
1856 	}
1857 
1858 	mutex_unlock(&bnx2fc_dev_lock);
1859 }
1860 
bnx2fc_port_shutdown(struct fc_lport * lport)1861 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1862 {
1863 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
1864 	fc_fabric_logoff(lport);
1865 	fc_lport_destroy(lport);
1866 }
1867 
bnx2fc_stop(struct bnx2fc_interface * interface)1868 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1869 {
1870 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1871 	struct fc_lport *lport;
1872 	struct fc_lport *vport;
1873 
1874 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1875 		return;
1876 
1877 	lport = ctlr->lp;
1878 	bnx2fc_port_shutdown(lport);
1879 
1880 	mutex_lock(&lport->lp_mutex);
1881 	list_for_each_entry(vport, &lport->vports, list)
1882 		fc_host_port_type(vport->host) =
1883 					FC_PORTTYPE_UNKNOWN;
1884 	mutex_unlock(&lport->lp_mutex);
1885 	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1886 	fcoe_ctlr_link_down(ctlr);
1887 	fcoe_clean_pending_queue(lport);
1888 }
1889 
bnx2fc_fw_init(struct bnx2fc_hba * hba)1890 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1891 {
1892 #define BNX2FC_INIT_POLL_TIME		(1000 / HZ)
1893 	int rc = -1;
1894 	int i = HZ;
1895 
1896 	rc = bnx2fc_bind_adapter_devices(hba);
1897 	if (rc) {
1898 		printk(KERN_ALERT PFX
1899 			"bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1900 		goto err_out;
1901 	}
1902 
1903 	rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1904 	if (rc) {
1905 		printk(KERN_ALERT PFX
1906 			"bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1907 		goto err_unbind;
1908 	}
1909 
1910 	/*
1911 	 * Wait until the adapter init message is complete, and adapter
1912 	 * state is UP.
1913 	 */
1914 	while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1915 		msleep(BNX2FC_INIT_POLL_TIME);
1916 
1917 	if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1918 		printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1919 				"Ignoring...\n",
1920 				hba->cnic->netdev->name);
1921 		rc = -1;
1922 		goto err_unbind;
1923 	}
1924 
1925 
1926 	set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1927 	return 0;
1928 
1929 err_unbind:
1930 	bnx2fc_unbind_adapter_devices(hba);
1931 err_out:
1932 	return rc;
1933 }
1934 
bnx2fc_fw_destroy(struct bnx2fc_hba * hba)1935 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1936 {
1937 	if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1938 		if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1939 			timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer,
1940 				    0);
1941 			hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1942 								jiffies;
1943 			add_timer(&hba->destroy_timer);
1944 			wait_event_interruptible(hba->destroy_wait,
1945 					test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1946 						 &hba->flags));
1947 			clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1948 			/* This should never happen */
1949 			if (signal_pending(current))
1950 				flush_signals(current);
1951 
1952 			del_timer_sync(&hba->destroy_timer);
1953 		}
1954 		bnx2fc_unbind_adapter_devices(hba);
1955 	}
1956 }
1957 
1958 /**
1959  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1960  *
1961  * @handle:	transport handle pointing to adapter structure
1962  *
1963  * Driver checks if adapter is already in shutdown mode, if not start
1964  *	the shutdown process.
1965  */
bnx2fc_ulp_stop(void * handle)1966 static void bnx2fc_ulp_stop(void *handle)
1967 {
1968 	struct bnx2fc_hba *hba = handle;
1969 	struct bnx2fc_interface *interface;
1970 
1971 	printk(KERN_ERR "ULP_STOP\n");
1972 
1973 	mutex_lock(&bnx2fc_dev_lock);
1974 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1975 		goto exit;
1976 	list_for_each_entry(interface, &if_list, list) {
1977 		if (interface->hba == hba)
1978 			bnx2fc_stop(interface);
1979 	}
1980 	BUG_ON(hba->num_ofld_sess != 0);
1981 
1982 	mutex_lock(&hba->hba_mutex);
1983 	clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1984 	clear_bit(ADAPTER_STATE_GOING_DOWN,
1985 		  &hba->adapter_state);
1986 
1987 	clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1988 	mutex_unlock(&hba->hba_mutex);
1989 
1990 	bnx2fc_fw_destroy(hba);
1991 exit:
1992 	mutex_unlock(&bnx2fc_dev_lock);
1993 }
1994 
bnx2fc_start_disc(struct bnx2fc_interface * interface)1995 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1996 {
1997 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1998 	struct fc_lport *lport;
1999 	int wait_cnt = 0;
2000 
2001 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
2002 	/* Kick off FIP/FLOGI */
2003 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
2004 		printk(KERN_ERR PFX "Init not done yet\n");
2005 		return;
2006 	}
2007 
2008 	lport = ctlr->lp;
2009 	BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
2010 
2011 	if (!bnx2fc_link_ok(lport) && interface->enabled) {
2012 		BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
2013 		fcoe_ctlr_link_up(ctlr);
2014 		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2015 		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2016 	}
2017 
2018 	/* wait for the FCF to be selected before issuing FLOGI */
2019 	while (!ctlr->sel_fcf) {
2020 		msleep(250);
2021 		/* give up after 3 secs */
2022 		if (++wait_cnt > 12)
2023 			break;
2024 	}
2025 
2026 	/* Reset max receive frame size to default */
2027 	if (fc_set_mfs(lport, BNX2FC_MFS))
2028 		return;
2029 
2030 	fc_lport_init(lport);
2031 	fc_fabric_login(lport);
2032 }
2033 
2034 
2035 /**
2036  * bnx2fc_ulp_init - Initialize an adapter instance
2037  *
2038  * @dev :	cnic device handle
2039  * Called from cnic_register_driver() context to initialize all
2040  *	enumerated cnic devices. This routine allocates adapter structure
2041  *	and other device specific resources.
2042  */
bnx2fc_ulp_init(struct cnic_dev * dev)2043 static void bnx2fc_ulp_init(struct cnic_dev *dev)
2044 {
2045 	struct bnx2fc_hba *hba;
2046 	int rc = 0;
2047 
2048 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
2049 	/* bnx2fc works only when bnx2x is loaded */
2050 	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
2051 	    (dev->max_fcoe_conn == 0)) {
2052 		printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
2053 				    " flags: %lx fcoe_conn: %d\n",
2054 			dev->netdev->name, dev->flags, dev->max_fcoe_conn);
2055 		return;
2056 	}
2057 
2058 	hba = bnx2fc_hba_create(dev);
2059 	if (!hba) {
2060 		printk(KERN_ERR PFX "hba initialization failed\n");
2061 		return;
2062 	}
2063 
2064 	pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
2065 
2066 	/* Add HBA to the adapter list */
2067 	mutex_lock(&bnx2fc_dev_lock);
2068 	list_add_tail(&hba->list, &adapter_list);
2069 	adapter_count++;
2070 	mutex_unlock(&bnx2fc_dev_lock);
2071 
2072 	dev->fcoe_cap = &hba->fcoe_cap;
2073 	clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2074 	rc = dev->register_device(dev, CNIC_ULP_FCOE,
2075 						(void *) hba);
2076 	if (rc)
2077 		printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2078 	else
2079 		set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2080 }
2081 
2082 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
__bnx2fc_disable(struct fcoe_ctlr * ctlr)2083 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2084 {
2085 	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2086 
2087 	if (interface->enabled == true) {
2088 		if (!ctlr->lp) {
2089 			pr_err(PFX "__bnx2fc_disable: lport not found\n");
2090 			return -ENODEV;
2091 		} else {
2092 			interface->enabled = false;
2093 			fcoe_ctlr_link_down(ctlr);
2094 			fcoe_clean_pending_queue(ctlr->lp);
2095 		}
2096 	}
2097 	return 0;
2098 }
2099 
2100 /*
2101  * Deperecated: Use bnx2fc_enabled()
2102  */
bnx2fc_disable(struct net_device * netdev)2103 static int bnx2fc_disable(struct net_device *netdev)
2104 {
2105 	struct bnx2fc_interface *interface;
2106 	struct fcoe_ctlr *ctlr;
2107 	int rc = 0;
2108 
2109 	rtnl_lock();
2110 	mutex_lock(&bnx2fc_dev_lock);
2111 
2112 	interface = bnx2fc_interface_lookup(netdev);
2113 	ctlr = bnx2fc_to_ctlr(interface);
2114 
2115 	if (!interface) {
2116 		rc = -ENODEV;
2117 		pr_err(PFX "bnx2fc_disable: interface not found\n");
2118 	} else {
2119 		rc = __bnx2fc_disable(ctlr);
2120 	}
2121 	mutex_unlock(&bnx2fc_dev_lock);
2122 	rtnl_unlock();
2123 	return rc;
2124 }
2125 
bnx2fc_npiv_create_vports(struct fc_lport * lport,struct cnic_fc_npiv_tbl * npiv_tbl)2126 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2127 				      struct cnic_fc_npiv_tbl *npiv_tbl)
2128 {
2129 	struct fc_vport_identifiers vpid;
2130 	uint i, created = 0;
2131 	u64 wwnn = 0;
2132 	char wwpn_str[32];
2133 	char wwnn_str[32];
2134 
2135 	if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2136 		BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2137 		goto done;
2138 	}
2139 
2140 	/* Sanity check the first entry to make sure it's not 0 */
2141 	if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2142 	    wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2143 		BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2144 		goto done;
2145 	}
2146 
2147 	vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2148 	vpid.vport_type = FC_PORTTYPE_NPIV;
2149 	vpid.disable = false;
2150 
2151 	for (i = 0; i < npiv_tbl->count; i++) {
2152 		wwnn = wwn_to_u64(npiv_tbl->wwnn[i]);
2153 		if (wwnn == 0) {
2154 			/*
2155 			 * If we get a 0 element from for the WWNN then assume
2156 			 * the WWNN should be the same as the physical port.
2157 			 */
2158 			wwnn = lport->wwnn;
2159 		}
2160 		vpid.node_name = wwnn;
2161 		vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2162 		scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2163 		    "NPIV[%u]:%016llx-%016llx",
2164 		    created, vpid.port_name, vpid.node_name);
2165 		fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str));
2166 		fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str));
2167 		BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str,
2168 		    wwpn_str);
2169 		if (fc_vport_create(lport->host, 0, &vpid))
2170 			created++;
2171 		else
2172 			BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2173 	}
2174 done:
2175 	return created;
2176 }
2177 
__bnx2fc_enable(struct fcoe_ctlr * ctlr)2178 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2179 {
2180 	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2181 	struct bnx2fc_hba *hba;
2182 	struct cnic_fc_npiv_tbl *npiv_tbl;
2183 	struct fc_lport *lport;
2184 
2185 	if (interface->enabled == false) {
2186 		if (!ctlr->lp) {
2187 			pr_err(PFX "__bnx2fc_enable: lport not found\n");
2188 			return -ENODEV;
2189 		} else if (!bnx2fc_link_ok(ctlr->lp)) {
2190 			fcoe_ctlr_link_up(ctlr);
2191 			interface->enabled = true;
2192 		}
2193 	}
2194 
2195 	/* Create static NPIV ports if any are contained in NVRAM */
2196 	hba = interface->hba;
2197 	lport = ctlr->lp;
2198 
2199 	if (!hba)
2200 		goto done;
2201 
2202 	if (!hba->cnic)
2203 		goto done;
2204 
2205 	if (!lport)
2206 		goto done;
2207 
2208 	if (!lport->host)
2209 		goto done;
2210 
2211 	if (!hba->cnic->get_fc_npiv_tbl)
2212 		goto done;
2213 
2214 	npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2215 	if (!npiv_tbl)
2216 		goto done;
2217 
2218 	if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2219 		goto done_free;
2220 
2221 	bnx2fc_npiv_create_vports(lport, npiv_tbl);
2222 done_free:
2223 	kfree(npiv_tbl);
2224 done:
2225 	return 0;
2226 }
2227 
2228 /*
2229  * Deprecated: Use bnx2fc_enabled()
2230  */
bnx2fc_enable(struct net_device * netdev)2231 static int bnx2fc_enable(struct net_device *netdev)
2232 {
2233 	struct bnx2fc_interface *interface;
2234 	struct fcoe_ctlr *ctlr;
2235 	int rc = 0;
2236 
2237 	rtnl_lock();
2238 	mutex_lock(&bnx2fc_dev_lock);
2239 
2240 	interface = bnx2fc_interface_lookup(netdev);
2241 	ctlr = bnx2fc_to_ctlr(interface);
2242 	if (!interface) {
2243 		rc = -ENODEV;
2244 		pr_err(PFX "bnx2fc_enable: interface not found\n");
2245 	} else {
2246 		rc = __bnx2fc_enable(ctlr);
2247 	}
2248 
2249 	mutex_unlock(&bnx2fc_dev_lock);
2250 	rtnl_unlock();
2251 	return rc;
2252 }
2253 
2254 /**
2255  * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2256  * @cdev: The FCoE Controller that is being enabled or disabled
2257  *
2258  * fcoe_sysfs will ensure that the state of 'enabled' has
2259  * changed, so no checking is necessary here. This routine simply
2260  * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2261  * When those routines are removed the functionality can be merged
2262  * here.
2263  */
bnx2fc_ctlr_enabled(struct fcoe_ctlr_device * cdev)2264 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2265 {
2266 	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2267 
2268 	switch (cdev->enabled) {
2269 	case FCOE_CTLR_ENABLED:
2270 		return __bnx2fc_enable(ctlr);
2271 	case FCOE_CTLR_DISABLED:
2272 		return __bnx2fc_disable(ctlr);
2273 	case FCOE_CTLR_UNUSED:
2274 	default:
2275 		return -ENOTSUPP;
2276 	};
2277 }
2278 
2279 enum bnx2fc_create_link_state {
2280 	BNX2FC_CREATE_LINK_DOWN,
2281 	BNX2FC_CREATE_LINK_UP,
2282 };
2283 
2284 /**
2285  * _bnx2fc_create() - Create bnx2fc FCoE interface
2286  * @netdev  :   The net_device object the Ethernet interface to create on
2287  * @fip_mode:   The FIP mode for this creation
2288  * @link_state: The ctlr link state on creation
2289  *
2290  * Called from either the libfcoe 'create' module parameter
2291  * via fcoe_create or from fcoe_syfs's ctlr_create file.
2292  *
2293  * libfcoe's 'create' module parameter is deprecated so some
2294  * consolidation of code can be done when that interface is
2295  * removed.
2296  *
2297  * Returns: 0 for success
2298  */
_bnx2fc_create(struct net_device * netdev,enum fip_mode fip_mode,enum bnx2fc_create_link_state link_state)2299 static int _bnx2fc_create(struct net_device *netdev,
2300 			  enum fip_mode fip_mode,
2301 			  enum bnx2fc_create_link_state link_state)
2302 {
2303 	struct fcoe_ctlr_device *cdev;
2304 	struct fcoe_ctlr *ctlr;
2305 	struct bnx2fc_interface *interface;
2306 	struct bnx2fc_hba *hba;
2307 	struct net_device *phys_dev = netdev;
2308 	struct fc_lport *lport;
2309 	struct ethtool_drvinfo drvinfo;
2310 	int rc = 0;
2311 	int vlan_id = 0;
2312 
2313 	BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2314 	if (fip_mode != FIP_MODE_FABRIC) {
2315 		printk(KERN_ERR "fip mode not FABRIC\n");
2316 		return -EIO;
2317 	}
2318 
2319 	rtnl_lock();
2320 
2321 	mutex_lock(&bnx2fc_dev_lock);
2322 
2323 	if (!try_module_get(THIS_MODULE)) {
2324 		rc = -EINVAL;
2325 		goto mod_err;
2326 	}
2327 
2328 	/* obtain physical netdev */
2329 	if (is_vlan_dev(netdev))
2330 		phys_dev = vlan_dev_real_dev(netdev);
2331 
2332 	/* verify if the physical device is a netxtreme2 device */
2333 	if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2334 		memset(&drvinfo, 0, sizeof(drvinfo));
2335 		phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2336 		if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2337 			printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2338 			rc = -EINVAL;
2339 			goto netdev_err;
2340 		}
2341 	} else {
2342 		printk(KERN_ERR PFX "unable to obtain drv_info\n");
2343 		rc = -EINVAL;
2344 		goto netdev_err;
2345 	}
2346 
2347 	/* obtain interface and initialize rest of the structure */
2348 	hba = bnx2fc_hba_lookup(phys_dev);
2349 	if (!hba) {
2350 		rc = -ENODEV;
2351 		printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2352 		goto netdev_err;
2353 	}
2354 
2355 	if (bnx2fc_interface_lookup(netdev)) {
2356 		rc = -EEXIST;
2357 		goto netdev_err;
2358 	}
2359 
2360 	interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2361 	if (!interface) {
2362 		printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2363 		rc = -ENOMEM;
2364 		goto netdev_err;
2365 	}
2366 
2367 	if (is_vlan_dev(netdev)) {
2368 		vlan_id = vlan_dev_vlan_id(netdev);
2369 		interface->vlan_enabled = 1;
2370 	}
2371 
2372 	ctlr = bnx2fc_to_ctlr(interface);
2373 	cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2374 	interface->vlan_id = vlan_id;
2375 	interface->tm_timeout = BNX2FC_TM_TIMEOUT;
2376 
2377 	interface->timer_work_queue =
2378 			create_singlethread_workqueue("bnx2fc_timer_wq");
2379 	if (!interface->timer_work_queue) {
2380 		printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2381 		rc = -EINVAL;
2382 		goto ifput_err;
2383 	}
2384 
2385 	lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2386 	if (!lport) {
2387 		printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2388 			netdev->name);
2389 		rc = -EINVAL;
2390 		goto if_create_err;
2391 	}
2392 
2393 	/* Add interface to if_list */
2394 	list_add_tail(&interface->list, &if_list);
2395 
2396 	lport->boot_time = jiffies;
2397 
2398 	/* Make this master N_port */
2399 	ctlr->lp = lport;
2400 
2401 	if (link_state == BNX2FC_CREATE_LINK_UP)
2402 		cdev->enabled = FCOE_CTLR_ENABLED;
2403 	else
2404 		cdev->enabled = FCOE_CTLR_DISABLED;
2405 
2406 	if (link_state == BNX2FC_CREATE_LINK_UP &&
2407 	    !bnx2fc_link_ok(lport)) {
2408 		fcoe_ctlr_link_up(ctlr);
2409 		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2410 		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2411 	}
2412 
2413 	BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2414 	bnx2fc_start_disc(interface);
2415 
2416 	if (link_state == BNX2FC_CREATE_LINK_UP)
2417 		interface->enabled = true;
2418 
2419 	/*
2420 	 * Release from kref_init in bnx2fc_interface_setup, on success
2421 	 * lport should be holding a reference taken in bnx2fc_if_create
2422 	 */
2423 	bnx2fc_interface_put(interface);
2424 	/* put netdev that was held while calling dev_get_by_name */
2425 	mutex_unlock(&bnx2fc_dev_lock);
2426 	rtnl_unlock();
2427 	return 0;
2428 
2429 if_create_err:
2430 	destroy_workqueue(interface->timer_work_queue);
2431 ifput_err:
2432 	bnx2fc_net_cleanup(interface);
2433 	bnx2fc_interface_put(interface);
2434 	goto mod_err;
2435 netdev_err:
2436 	module_put(THIS_MODULE);
2437 mod_err:
2438 	mutex_unlock(&bnx2fc_dev_lock);
2439 	rtnl_unlock();
2440 	return rc;
2441 }
2442 
2443 /**
2444  * bnx2fc_create() - Create a bnx2fc interface
2445  * @netdev  : The net_device object the Ethernet interface to create on
2446  * @fip_mode: The FIP mode for this creation
2447  *
2448  * Called from fcoe transport
2449  *
2450  * Returns: 0 for success
2451  */
bnx2fc_create(struct net_device * netdev,enum fip_mode fip_mode)2452 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode)
2453 {
2454 	return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2455 }
2456 
2457 /**
2458  * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2459  * @netdev: The net_device to be used by the allocated FCoE Controller
2460  *
2461  * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2462  * in a link_down state. The allows the user an opportunity to configure
2463  * the FCoE Controller from sysfs before enabling the FCoE Controller.
2464  *
2465  * Creating in with this routine starts the FCoE Controller in Fabric
2466  * mode. The user can change to VN2VN or another mode before enabling.
2467  */
bnx2fc_ctlr_alloc(struct net_device * netdev)2468 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2469 {
2470 	return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2471 			      BNX2FC_CREATE_LINK_DOWN);
2472 }
2473 
2474 /**
2475  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2476  *
2477  * @cnic:	Pointer to cnic device instance
2478  *
2479  **/
bnx2fc_find_hba_for_cnic(struct cnic_dev * cnic)2480 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2481 {
2482 	struct bnx2fc_hba *hba;
2483 
2484 	/* Called with bnx2fc_dev_lock held */
2485 	list_for_each_entry(hba, &adapter_list, list) {
2486 		if (hba->cnic == cnic)
2487 			return hba;
2488 	}
2489 	return NULL;
2490 }
2491 
bnx2fc_interface_lookup(struct net_device * netdev)2492 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2493 							*netdev)
2494 {
2495 	struct bnx2fc_interface *interface;
2496 
2497 	/* Called with bnx2fc_dev_lock held */
2498 	list_for_each_entry(interface, &if_list, list) {
2499 		if (interface->netdev == netdev)
2500 			return interface;
2501 	}
2502 	return NULL;
2503 }
2504 
bnx2fc_hba_lookup(struct net_device * phys_dev)2505 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2506 						      *phys_dev)
2507 {
2508 	struct bnx2fc_hba *hba;
2509 
2510 	/* Called with bnx2fc_dev_lock held */
2511 	list_for_each_entry(hba, &adapter_list, list) {
2512 		if (hba->phys_dev == phys_dev)
2513 			return hba;
2514 	}
2515 	printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2516 	return NULL;
2517 }
2518 
2519 /**
2520  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2521  *
2522  * @dev:	cnic device handle
2523  */
bnx2fc_ulp_exit(struct cnic_dev * dev)2524 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2525 {
2526 	struct bnx2fc_hba *hba;
2527 	struct bnx2fc_interface *interface, *tmp;
2528 
2529 	BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2530 
2531 	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2532 		printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2533 			dev->netdev->name, dev->flags);
2534 		return;
2535 	}
2536 
2537 	mutex_lock(&bnx2fc_dev_lock);
2538 	hba = bnx2fc_find_hba_for_cnic(dev);
2539 	if (!hba) {
2540 		printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2541 		       dev);
2542 		mutex_unlock(&bnx2fc_dev_lock);
2543 		return;
2544 	}
2545 
2546 	list_del_init(&hba->list);
2547 	adapter_count--;
2548 
2549 	list_for_each_entry_safe(interface, tmp, &if_list, list)
2550 		/* destroy not called yet, move to quiesced list */
2551 		if (interface->hba == hba)
2552 			__bnx2fc_destroy(interface);
2553 	mutex_unlock(&bnx2fc_dev_lock);
2554 
2555 	bnx2fc_ulp_stop(hba);
2556 	/* unregister cnic device */
2557 	if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2558 		hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2559 	bnx2fc_hba_destroy(hba);
2560 }
2561 
bnx2fc_rport_terminate_io(struct fc_rport * rport)2562 static void bnx2fc_rport_terminate_io(struct fc_rport *rport)
2563 {
2564 	/* This is a no-op */
2565 }
2566 
2567 /**
2568  * bnx2fc_fcoe_reset - Resets the fcoe
2569  *
2570  * @shost: shost the reset is from
2571  *
2572  * Returns: always 0
2573  */
bnx2fc_fcoe_reset(struct Scsi_Host * shost)2574 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2575 {
2576 	struct fc_lport *lport = shost_priv(shost);
2577 	fc_lport_reset(lport);
2578 	return 0;
2579 }
2580 
2581 
bnx2fc_match(struct net_device * netdev)2582 static bool bnx2fc_match(struct net_device *netdev)
2583 {
2584 	struct net_device *phys_dev = netdev;
2585 
2586 	mutex_lock(&bnx2fc_dev_lock);
2587 	if (is_vlan_dev(netdev))
2588 		phys_dev = vlan_dev_real_dev(netdev);
2589 
2590 	if (bnx2fc_hba_lookup(phys_dev)) {
2591 		mutex_unlock(&bnx2fc_dev_lock);
2592 		return true;
2593 	}
2594 
2595 	mutex_unlock(&bnx2fc_dev_lock);
2596 	return false;
2597 }
2598 
2599 
2600 static struct fcoe_transport bnx2fc_transport = {
2601 	.name = {"bnx2fc"},
2602 	.attached = false,
2603 	.list = LIST_HEAD_INIT(bnx2fc_transport.list),
2604 	.alloc = bnx2fc_ctlr_alloc,
2605 	.match = bnx2fc_match,
2606 	.create = bnx2fc_create,
2607 	.destroy = bnx2fc_destroy,
2608 	.enable = bnx2fc_enable,
2609 	.disable = bnx2fc_disable,
2610 };
2611 
2612 /**
2613  * bnx2fc_cpu_online - Create a receive thread for an  online CPU
2614  *
2615  * @cpu: cpu index for the online cpu
2616  */
bnx2fc_cpu_online(unsigned int cpu)2617 static int bnx2fc_cpu_online(unsigned int cpu)
2618 {
2619 	struct bnx2fc_percpu_s *p;
2620 	struct task_struct *thread;
2621 
2622 	p = &per_cpu(bnx2fc_percpu, cpu);
2623 
2624 	thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2625 					(void *)p, cpu_to_node(cpu),
2626 					"bnx2fc_thread/%d", cpu);
2627 	if (IS_ERR(thread))
2628 		return PTR_ERR(thread);
2629 
2630 	/* bind thread to the cpu */
2631 	kthread_bind(thread, cpu);
2632 	p->iothread = thread;
2633 	wake_up_process(thread);
2634 	return 0;
2635 }
2636 
bnx2fc_cpu_offline(unsigned int cpu)2637 static int bnx2fc_cpu_offline(unsigned int cpu)
2638 {
2639 	struct bnx2fc_percpu_s *p;
2640 	struct task_struct *thread;
2641 	struct bnx2fc_work *work, *tmp;
2642 
2643 	BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2644 
2645 	/* Prevent any new work from being queued for this CPU */
2646 	p = &per_cpu(bnx2fc_percpu, cpu);
2647 	spin_lock_bh(&p->fp_work_lock);
2648 	thread = p->iothread;
2649 	p->iothread = NULL;
2650 
2651 	/* Free all work in the list */
2652 	list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2653 		list_del_init(&work->list);
2654 		bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data,
2655 					work->num_rq, work->task);
2656 		kfree(work);
2657 	}
2658 
2659 	spin_unlock_bh(&p->fp_work_lock);
2660 
2661 	if (thread)
2662 		kthread_stop(thread);
2663 	return 0;
2664 }
2665 
bnx2fc_slave_configure(struct scsi_device * sdev)2666 static int bnx2fc_slave_configure(struct scsi_device *sdev)
2667 {
2668 	if (!bnx2fc_queue_depth)
2669 		return 0;
2670 
2671 	scsi_change_queue_depth(sdev, bnx2fc_queue_depth);
2672 	return 0;
2673 }
2674 
2675 static enum cpuhp_state bnx2fc_online_state;
2676 
2677 /**
2678  * bnx2fc_mod_init - module init entry point
2679  *
2680  * Initialize driver wide global data structures, and register
2681  * with cnic module
2682  **/
bnx2fc_mod_init(void)2683 static int __init bnx2fc_mod_init(void)
2684 {
2685 	struct fcoe_percpu_s *bg;
2686 	struct task_struct *l2_thread;
2687 	int rc = 0;
2688 	unsigned int cpu = 0;
2689 	struct bnx2fc_percpu_s *p;
2690 
2691 	printk(KERN_INFO PFX "%s", version);
2692 
2693 	/* register as a fcoe transport */
2694 	rc = fcoe_transport_attach(&bnx2fc_transport);
2695 	if (rc) {
2696 		printk(KERN_ERR "failed to register an fcoe transport, check "
2697 			"if libfcoe is loaded\n");
2698 		goto out;
2699 	}
2700 
2701 	INIT_LIST_HEAD(&adapter_list);
2702 	INIT_LIST_HEAD(&if_list);
2703 	mutex_init(&bnx2fc_dev_lock);
2704 	adapter_count = 0;
2705 
2706 	/* Attach FC transport template */
2707 	rc = bnx2fc_attach_transport();
2708 	if (rc)
2709 		goto detach_ft;
2710 
2711 	bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2712 	if (!bnx2fc_wq) {
2713 		rc = -ENOMEM;
2714 		goto release_bt;
2715 	}
2716 
2717 	bg = &bnx2fc_global;
2718 	skb_queue_head_init(&bg->fcoe_rx_list);
2719 	l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2720 				   (void *)bg,
2721 				   "bnx2fc_l2_thread");
2722 	if (IS_ERR(l2_thread)) {
2723 		rc = PTR_ERR(l2_thread);
2724 		goto free_wq;
2725 	}
2726 	wake_up_process(l2_thread);
2727 	spin_lock_bh(&bg->fcoe_rx_list.lock);
2728 	bg->kthread = l2_thread;
2729 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2730 
2731 	for_each_possible_cpu(cpu) {
2732 		p = &per_cpu(bnx2fc_percpu, cpu);
2733 		INIT_LIST_HEAD(&p->work_list);
2734 		spin_lock_init(&p->fp_work_lock);
2735 	}
2736 
2737 	rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online",
2738 			       bnx2fc_cpu_online, bnx2fc_cpu_offline);
2739 	if (rc < 0)
2740 		goto stop_thread;
2741 	bnx2fc_online_state = rc;
2742 
2743 	cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2744 	return 0;
2745 
2746 stop_thread:
2747 	kthread_stop(l2_thread);
2748 free_wq:
2749 	destroy_workqueue(bnx2fc_wq);
2750 release_bt:
2751 	bnx2fc_release_transport();
2752 detach_ft:
2753 	fcoe_transport_detach(&bnx2fc_transport);
2754 out:
2755 	return rc;
2756 }
2757 
bnx2fc_mod_exit(void)2758 static void __exit bnx2fc_mod_exit(void)
2759 {
2760 	LIST_HEAD(to_be_deleted);
2761 	struct bnx2fc_hba *hba, *next;
2762 	struct fcoe_percpu_s *bg;
2763 	struct task_struct *l2_thread;
2764 	struct sk_buff *skb;
2765 
2766 	/*
2767 	 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2768 	 * it will have higher precedence than bnx2fc_dev_lock.
2769 	 * unregister_device() cannot be called with bnx2fc_dev_lock
2770 	 * held.
2771 	 */
2772 	mutex_lock(&bnx2fc_dev_lock);
2773 	list_splice_init(&adapter_list, &to_be_deleted);
2774 	adapter_count = 0;
2775 	mutex_unlock(&bnx2fc_dev_lock);
2776 
2777 	/* Unregister with cnic */
2778 	list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2779 		list_del_init(&hba->list);
2780 		printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2781 		       hba);
2782 		bnx2fc_ulp_stop(hba);
2783 		/* unregister cnic device */
2784 		if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2785 				       &hba->reg_with_cnic))
2786 			hba->cnic->unregister_device(hba->cnic,
2787 							 CNIC_ULP_FCOE);
2788 		bnx2fc_hba_destroy(hba);
2789 	}
2790 	cnic_unregister_driver(CNIC_ULP_FCOE);
2791 
2792 	/* Destroy global thread */
2793 	bg = &bnx2fc_global;
2794 	spin_lock_bh(&bg->fcoe_rx_list.lock);
2795 	l2_thread = bg->kthread;
2796 	bg->kthread = NULL;
2797 	while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2798 		kfree_skb(skb);
2799 
2800 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2801 
2802 	if (l2_thread)
2803 		kthread_stop(l2_thread);
2804 
2805 	cpuhp_remove_state(bnx2fc_online_state);
2806 
2807 	destroy_workqueue(bnx2fc_wq);
2808 	/*
2809 	 * detach from scsi transport
2810 	 * must happen after all destroys are done
2811 	 */
2812 	bnx2fc_release_transport();
2813 
2814 	/* detach from fcoe transport */
2815 	fcoe_transport_detach(&bnx2fc_transport);
2816 }
2817 
2818 module_init(bnx2fc_mod_init);
2819 module_exit(bnx2fc_mod_exit);
2820 
2821 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2822 	.set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2823 	.get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2824 	.get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2825 	.get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2826 	.get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2827 	.get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2828 	.get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2829 
2830 	.get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2831 	.get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2832 };
2833 
2834 static struct fc_function_template bnx2fc_transport_function = {
2835 	.show_host_node_name = 1,
2836 	.show_host_port_name = 1,
2837 	.show_host_supported_classes = 1,
2838 	.show_host_supported_fc4s = 1,
2839 	.show_host_active_fc4s = 1,
2840 	.show_host_maxframe_size = 1,
2841 
2842 	.show_host_port_id = 1,
2843 	.show_host_supported_speeds = 1,
2844 	.get_host_speed = fc_get_host_speed,
2845 	.show_host_speed = 1,
2846 	.show_host_port_type = 1,
2847 	.get_host_port_state = fc_get_host_port_state,
2848 	.show_host_port_state = 1,
2849 	.show_host_symbolic_name = 1,
2850 
2851 	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2852 				sizeof(struct bnx2fc_rport)),
2853 	.show_rport_maxframe_size = 1,
2854 	.show_rport_supported_classes = 1,
2855 
2856 	.show_host_fabric_name = 1,
2857 	.show_starget_node_name = 1,
2858 	.show_starget_port_name = 1,
2859 	.show_starget_port_id = 1,
2860 	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2861 	.show_rport_dev_loss_tmo = 1,
2862 	.get_fc_host_stats = bnx2fc_get_host_stats,
2863 
2864 	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2865 
2866 	.terminate_rport_io = bnx2fc_rport_terminate_io,
2867 
2868 	.vport_create = bnx2fc_vport_create,
2869 	.vport_delete = bnx2fc_vport_destroy,
2870 	.vport_disable = bnx2fc_vport_disable,
2871 	.bsg_request = fc_lport_bsg_request,
2872 };
2873 
2874 static struct fc_function_template bnx2fc_vport_xport_function = {
2875 	.show_host_node_name = 1,
2876 	.show_host_port_name = 1,
2877 	.show_host_supported_classes = 1,
2878 	.show_host_supported_fc4s = 1,
2879 	.show_host_active_fc4s = 1,
2880 	.show_host_maxframe_size = 1,
2881 
2882 	.show_host_port_id = 1,
2883 	.show_host_supported_speeds = 1,
2884 	.get_host_speed = fc_get_host_speed,
2885 	.show_host_speed = 1,
2886 	.show_host_port_type = 1,
2887 	.get_host_port_state = fc_get_host_port_state,
2888 	.show_host_port_state = 1,
2889 	.show_host_symbolic_name = 1,
2890 
2891 	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2892 				sizeof(struct bnx2fc_rport)),
2893 	.show_rport_maxframe_size = 1,
2894 	.show_rport_supported_classes = 1,
2895 
2896 	.show_host_fabric_name = 1,
2897 	.show_starget_node_name = 1,
2898 	.show_starget_port_name = 1,
2899 	.show_starget_port_id = 1,
2900 	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2901 	.show_rport_dev_loss_tmo = 1,
2902 	.get_fc_host_stats = fc_get_host_stats,
2903 	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2904 	.terminate_rport_io = fc_rport_terminate_io,
2905 	.bsg_request = fc_lport_bsg_request,
2906 };
2907 
2908 /*
2909  * Additional scsi_host attributes.
2910  */
2911 static ssize_t
bnx2fc_tm_timeout_show(struct device * dev,struct device_attribute * attr,char * buf)2912 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
2913 	char *buf)
2914 {
2915 	struct Scsi_Host *shost = class_to_shost(dev);
2916 	struct fc_lport *lport = shost_priv(shost);
2917 	struct fcoe_port *port = lport_priv(lport);
2918 	struct bnx2fc_interface *interface = port->priv;
2919 
2920 	sprintf(buf, "%u\n", interface->tm_timeout);
2921 	return strlen(buf);
2922 }
2923 
2924 static ssize_t
bnx2fc_tm_timeout_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2925 bnx2fc_tm_timeout_store(struct device *dev,
2926 	struct device_attribute *attr, const char *buf, size_t count)
2927 {
2928 	struct Scsi_Host *shost = class_to_shost(dev);
2929 	struct fc_lport *lport = shost_priv(shost);
2930 	struct fcoe_port *port = lport_priv(lport);
2931 	struct bnx2fc_interface *interface = port->priv;
2932 	int rval, val;
2933 
2934 	rval = kstrtouint(buf, 10, &val);
2935 	if (rval)
2936 		return rval;
2937 	if (val > 255)
2938 		return -ERANGE;
2939 
2940 	interface->tm_timeout = (u8)val;
2941 	return strlen(buf);
2942 }
2943 
2944 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
2945 	bnx2fc_tm_timeout_store);
2946 
2947 static struct device_attribute *bnx2fc_host_attrs[] = {
2948 	&dev_attr_tm_timeout,
2949 	NULL,
2950 };
2951 
2952 /*
2953  * scsi_host_template structure used while registering with SCSI-ml
2954  */
2955 static struct scsi_host_template bnx2fc_shost_template = {
2956 	.module			= THIS_MODULE,
2957 	.name			= "QLogic Offload FCoE Initiator",
2958 	.queuecommand		= bnx2fc_queuecommand,
2959 	.eh_timed_out		= fc_eh_timed_out,
2960 	.eh_abort_handler	= bnx2fc_eh_abort,	  /* abts */
2961 	.eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2962 	.eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2963 	.eh_host_reset_handler	= fc_eh_host_reset,
2964 	.slave_alloc		= fc_slave_alloc,
2965 	.change_queue_depth	= scsi_change_queue_depth,
2966 	.this_id		= -1,
2967 	.cmd_per_lun		= 3,
2968 	.sg_tablesize		= BNX2FC_MAX_BDS_PER_CMD,
2969 	.dma_boundary           = 0x7fff,
2970 	.max_sectors		= 0x3fbf,
2971 	.track_queue_depth	= 1,
2972 	.slave_configure	= bnx2fc_slave_configure,
2973 	.shost_attrs		= bnx2fc_host_attrs,
2974 };
2975 
2976 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2977 	.frame_send		= bnx2fc_xmit,
2978 	.elsct_send		= bnx2fc_elsct_send,
2979 	.fcp_abort_io		= bnx2fc_abort_io,
2980 	.fcp_cleanup		= bnx2fc_cleanup,
2981 	.get_lesb		= fcoe_get_lesb,
2982 	.rport_event_callback	= bnx2fc_rport_event_handler,
2983 };
2984 
2985 /*
2986  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2987  *			structure carrying callback function pointers
2988  */
2989 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2990 	.owner			= THIS_MODULE,
2991 	.cnic_init		= bnx2fc_ulp_init,
2992 	.cnic_exit		= bnx2fc_ulp_exit,
2993 	.cnic_start		= bnx2fc_ulp_start,
2994 	.cnic_stop		= bnx2fc_ulp_stop,
2995 	.indicate_kcqes		= bnx2fc_indicate_kcqe,
2996 	.indicate_netevent	= bnx2fc_indicate_netevent,
2997 	.cnic_get_stats		= bnx2fc_ulp_get_stats,
2998 };
2999