1 /* bnx2fc_fcoe.c: QLogic Linux FCoE offload driver.
2  * This file contains the code that interacts with libfc, libfcoe,
3  * cnic modules to create FCoE instances, send/receive non-offloaded
4  * FIP/FCoE packets, listen to link events etc.
5  *
6  * Copyright (c) 2008-2013 Broadcom Corporation
7  * Copyright (c) 2014-2016 QLogic Corporation
8  * Copyright (c) 2016-2017 Cavium Inc.
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation.
13  *
14  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
15  */
16 
17 #include "bnx2fc.h"
18 
19 #include <linux/ethtool.h>
20 
21 static struct list_head adapter_list;
22 static struct list_head if_list;
23 static u32 adapter_count;
24 static DEFINE_MUTEX(bnx2fc_dev_lock);
25 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
26 
27 #define DRV_MODULE_NAME		"bnx2fc"
28 #define DRV_MODULE_VERSION	BNX2FC_VERSION
29 #define DRV_MODULE_RELDATE	"October 15, 2015"
30 
31 
32 static char version[] =
33 		"QLogic FCoE Driver " DRV_MODULE_NAME \
34 		" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
35 
36 
37 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
38 MODULE_DESCRIPTION("QLogic FCoE Driver");
39 MODULE_LICENSE("GPL");
40 MODULE_VERSION(DRV_MODULE_VERSION);
41 
42 #define BNX2FC_MAX_QUEUE_DEPTH	256
43 #define BNX2FC_MIN_QUEUE_DEPTH	32
44 #define FCOE_WORD_TO_BYTE  4
45 
46 static struct scsi_transport_template	*bnx2fc_transport_template;
47 static struct scsi_transport_template	*bnx2fc_vport_xport_template;
48 
49 struct workqueue_struct *bnx2fc_wq;
50 
51 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
52  * Here the io threads are per cpu but the l2 thread is just one
53  */
54 struct fcoe_percpu_s bnx2fc_global;
55 static DEFINE_SPINLOCK(bnx2fc_global_lock);
56 
57 static struct cnic_ulp_ops bnx2fc_cnic_cb;
58 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
59 static struct scsi_host_template bnx2fc_shost_template;
60 static struct fc_function_template bnx2fc_transport_function;
61 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
62 static struct fc_function_template bnx2fc_vport_xport_function;
63 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode);
64 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
65 static int bnx2fc_destroy(struct net_device *net_device);
66 static int bnx2fc_enable(struct net_device *netdev);
67 static int bnx2fc_disable(struct net_device *netdev);
68 
69 /* fcoe_syfs control interface handlers */
70 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
71 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
72 
73 static void bnx2fc_recv_frame(struct sk_buff *skb);
74 
75 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
76 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
77 static int bnx2fc_lport_config(struct fc_lport *lport);
78 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
79 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
80 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
81 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
82 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
83 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
84 				  struct device *parent, int npiv);
85 static void bnx2fc_port_destroy(struct fcoe_port *port);
86 
87 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
88 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
89 							*phys_dev);
90 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
91 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
92 
93 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
94 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
95 
96 static void bnx2fc_port_shutdown(struct fc_lport *lport);
97 static void bnx2fc_stop(struct bnx2fc_interface *interface);
98 static int __init bnx2fc_mod_init(void);
99 static void __exit bnx2fc_mod_exit(void);
100 
101 unsigned int bnx2fc_debug_level;
102 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
103 MODULE_PARM_DESC(debug_logging,
104 		"Option to enable extended logging,\n"
105 		"\t\tDefault is 0 - no logging.\n"
106 		"\t\t0x01 - SCSI cmd error, cleanup.\n"
107 		"\t\t0x02 - Session setup, cleanup, etc.\n"
108 		"\t\t0x04 - lport events, link, mtu, etc.\n"
109 		"\t\t0x08 - ELS logs.\n"
110 		"\t\t0x10 - fcoe L2 fame related logs.\n"
111 		"\t\t0xff - LOG all messages.");
112 
113 static uint bnx2fc_devloss_tmo;
114 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO);
115 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports "
116 	"attached via bnx2fc.");
117 
118 static uint bnx2fc_max_luns = BNX2FC_MAX_LUN;
119 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO);
120 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default "
121 	"0xffff.");
122 
123 static uint bnx2fc_queue_depth;
124 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO);
125 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices "
126 	"attached via bnx2fc.");
127 
128 static uint bnx2fc_log_fka;
129 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
130 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
131 	"initiating a FIP keep alive when debug logging is enabled.");
132 
bnx2fc_netdev(const struct fc_lport * lport)133 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
134 {
135 	return ((struct bnx2fc_interface *)
136 		((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
137 }
138 
bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device * fcf_dev)139 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
140 {
141 	struct fcoe_ctlr_device *ctlr_dev =
142 		fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
143 	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
144 	struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
145 
146 	fcf_dev->vlan_id = fcoe->vlan_id;
147 }
148 
bnx2fc_clean_rx_queue(struct fc_lport * lp)149 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
150 {
151 	struct fcoe_percpu_s *bg;
152 	struct fcoe_rcv_info *fr;
153 	struct sk_buff_head *list;
154 	struct sk_buff *skb, *next;
155 
156 	bg = &bnx2fc_global;
157 	spin_lock_bh(&bg->fcoe_rx_list.lock);
158 	list = &bg->fcoe_rx_list;
159 	skb_queue_walk_safe(list, skb, next) {
160 		fr = fcoe_dev_from_skb(skb);
161 		if (fr->fr_dev == lp) {
162 			__skb_unlink(skb, list);
163 			kfree_skb(skb);
164 		}
165 	}
166 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
167 }
168 
bnx2fc_get_paged_crc_eof(struct sk_buff * skb,int tlen)169 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
170 {
171 	int rc;
172 	spin_lock(&bnx2fc_global_lock);
173 	rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
174 	spin_unlock(&bnx2fc_global_lock);
175 
176 	return rc;
177 }
178 
bnx2fc_abort_io(struct fc_lport * lport)179 static void bnx2fc_abort_io(struct fc_lport *lport)
180 {
181 	/*
182 	 * This function is no-op for bnx2fc, but we do
183 	 * not want to leave it as NULL either, as libfc
184 	 * can call the default function which is
185 	 * fc_fcp_abort_io.
186 	 */
187 }
188 
bnx2fc_cleanup(struct fc_lport * lport)189 static void bnx2fc_cleanup(struct fc_lport *lport)
190 {
191 	struct fcoe_port *port = lport_priv(lport);
192 	struct bnx2fc_interface *interface = port->priv;
193 	struct bnx2fc_hba *hba = interface->hba;
194 	struct bnx2fc_rport *tgt;
195 	int i;
196 
197 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
198 	mutex_lock(&hba->hba_mutex);
199 	spin_lock_bh(&hba->hba_lock);
200 	for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
201 		tgt = hba->tgt_ofld_list[i];
202 		if (tgt) {
203 			/* Cleanup IOs belonging to requested vport */
204 			if (tgt->port == port) {
205 				spin_unlock_bh(&hba->hba_lock);
206 				BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
207 				bnx2fc_flush_active_ios(tgt);
208 				spin_lock_bh(&hba->hba_lock);
209 			}
210 		}
211 	}
212 	spin_unlock_bh(&hba->hba_lock);
213 	mutex_unlock(&hba->hba_mutex);
214 }
215 
bnx2fc_xmit_l2_frame(struct bnx2fc_rport * tgt,struct fc_frame * fp)216 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
217 			     struct fc_frame *fp)
218 {
219 	struct fc_rport_priv *rdata = tgt->rdata;
220 	struct fc_frame_header *fh;
221 	int rc = 0;
222 
223 	fh = fc_frame_header_get(fp);
224 	BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
225 			"r_ctl = 0x%x\n", rdata->ids.port_id,
226 			ntohs(fh->fh_ox_id), fh->fh_r_ctl);
227 	if ((fh->fh_type == FC_TYPE_ELS) &&
228 	    (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
229 
230 		switch (fc_frame_payload_op(fp)) {
231 		case ELS_ADISC:
232 			rc = bnx2fc_send_adisc(tgt, fp);
233 			break;
234 		case ELS_LOGO:
235 			rc = bnx2fc_send_logo(tgt, fp);
236 			break;
237 		case ELS_RLS:
238 			rc = bnx2fc_send_rls(tgt, fp);
239 			break;
240 		default:
241 			break;
242 		}
243 	} else if ((fh->fh_type ==  FC_TYPE_BLS) &&
244 	    (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
245 		BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
246 	else {
247 		BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
248 				"rctl 0x%x thru non-offload path\n",
249 				fh->fh_type, fh->fh_r_ctl);
250 		return -ENODEV;
251 	}
252 	if (rc)
253 		return -ENOMEM;
254 	else
255 		return 0;
256 }
257 
258 /**
259  * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
260  *
261  * @lport:	the associated local port
262  * @fp:	the fc_frame to be transmitted
263  */
bnx2fc_xmit(struct fc_lport * lport,struct fc_frame * fp)264 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
265 {
266 	struct ethhdr		*eh;
267 	struct fcoe_crc_eof	*cp;
268 	struct sk_buff		*skb;
269 	struct fc_frame_header	*fh;
270 	struct bnx2fc_interface	*interface;
271 	struct fcoe_ctlr        *ctlr;
272 	struct bnx2fc_hba *hba;
273 	struct fcoe_port	*port;
274 	struct fcoe_hdr		*hp;
275 	struct bnx2fc_rport	*tgt;
276 	u8			sof, eof;
277 	u32			crc;
278 	unsigned int		hlen, tlen, elen;
279 	int			wlen, rc = 0;
280 
281 	port = (struct fcoe_port *)lport_priv(lport);
282 	interface = port->priv;
283 	ctlr = bnx2fc_to_ctlr(interface);
284 	hba = interface->hba;
285 
286 	fh = fc_frame_header_get(fp);
287 
288 	skb = fp_skb(fp);
289 	if (!lport->link_up) {
290 		BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
291 		kfree_skb(skb);
292 		return 0;
293 	}
294 
295 	if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
296 		if (!ctlr->sel_fcf) {
297 			BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
298 			kfree_skb(skb);
299 			return -EINVAL;
300 		}
301 		if (fcoe_ctlr_els_send(ctlr, lport, skb))
302 			return 0;
303 	}
304 
305 	sof = fr_sof(fp);
306 	eof = fr_eof(fp);
307 
308 	/*
309 	 * Snoop the frame header to check if the frame is for
310 	 * an offloaded session
311 	 */
312 	/*
313 	 * tgt_ofld_list access is synchronized using
314 	 * both hba mutex and hba lock. Atleast hba mutex or
315 	 * hba lock needs to be held for read access.
316 	 */
317 
318 	spin_lock_bh(&hba->hba_lock);
319 	tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
320 	if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
321 		/* This frame is for offloaded session */
322 		BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
323 				"port_id = 0x%x\n", ntoh24(fh->fh_d_id));
324 		spin_unlock_bh(&hba->hba_lock);
325 		rc = bnx2fc_xmit_l2_frame(tgt, fp);
326 		if (rc != -ENODEV) {
327 			kfree_skb(skb);
328 			return rc;
329 		}
330 	} else {
331 		spin_unlock_bh(&hba->hba_lock);
332 	}
333 
334 	elen = sizeof(struct ethhdr);
335 	hlen = sizeof(struct fcoe_hdr);
336 	tlen = sizeof(struct fcoe_crc_eof);
337 	wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
338 
339 	skb->ip_summed = CHECKSUM_NONE;
340 	crc = fcoe_fc_crc(fp);
341 
342 	/* copy port crc and eof to the skb buff */
343 	if (skb_is_nonlinear(skb)) {
344 		skb_frag_t *frag;
345 		if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
346 			kfree_skb(skb);
347 			return -ENOMEM;
348 		}
349 		frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
350 		cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
351 	} else {
352 		cp = skb_put(skb, tlen);
353 	}
354 
355 	memset(cp, 0, sizeof(*cp));
356 	cp->fcoe_eof = eof;
357 	cp->fcoe_crc32 = cpu_to_le32(~crc);
358 	if (skb_is_nonlinear(skb)) {
359 		kunmap_atomic(cp);
360 		cp = NULL;
361 	}
362 
363 	/* adjust skb network/transport offsets to match mac/fcoe/port */
364 	skb_push(skb, elen + hlen);
365 	skb_reset_mac_header(skb);
366 	skb_reset_network_header(skb);
367 	skb->mac_len = elen;
368 	skb->protocol = htons(ETH_P_FCOE);
369 	skb->dev = interface->netdev;
370 
371 	/* fill up mac and fcoe headers */
372 	eh = eth_hdr(skb);
373 	eh->h_proto = htons(ETH_P_FCOE);
374 	if (ctlr->map_dest)
375 		fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
376 	else
377 		/* insert GW address */
378 		memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
379 
380 	if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
381 		memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
382 	else
383 		memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
384 
385 	hp = (struct fcoe_hdr *)(eh + 1);
386 	memset(hp, 0, sizeof(*hp));
387 	if (FC_FCOE_VER)
388 		FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
389 	hp->fcoe_sof = sof;
390 
391 	/* fcoe lso, mss is in max_payload which is non-zero for FCP data */
392 	if (lport->seq_offload && fr_max_payload(fp)) {
393 		skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
394 		skb_shinfo(skb)->gso_size = fr_max_payload(fp);
395 	} else {
396 		skb_shinfo(skb)->gso_type = 0;
397 		skb_shinfo(skb)->gso_size = 0;
398 	}
399 
400 	/*update tx stats */
401 	this_cpu_inc(lport->stats->TxFrames);
402 	this_cpu_add(lport->stats->TxWords, wlen);
403 
404 	/* send down to lld */
405 	fr_dev(fp) = lport;
406 	if (port->fcoe_pending_queue.qlen)
407 		fcoe_check_wait_queue(lport, skb);
408 	else if (fcoe_start_io(skb))
409 		fcoe_check_wait_queue(lport, skb);
410 
411 	return 0;
412 }
413 
414 /**
415  * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
416  *
417  * @skb:	the receive socket buffer
418  * @dev:	associated net device
419  * @ptype:	context
420  * @olddev:	last device
421  *
422  * This function receives the packet and builds FC frame and passes it up
423  */
bnx2fc_rcv(struct sk_buff * skb,struct net_device * dev,struct packet_type * ptype,struct net_device * olddev)424 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
425 		struct packet_type *ptype, struct net_device *olddev)
426 {
427 	struct fc_lport *lport;
428 	struct bnx2fc_interface *interface;
429 	struct fcoe_ctlr *ctlr;
430 	struct fcoe_rcv_info *fr;
431 	struct fcoe_percpu_s *bg;
432 
433 	interface = container_of(ptype, struct bnx2fc_interface,
434 				 fcoe_packet_type);
435 	ctlr = bnx2fc_to_ctlr(interface);
436 	lport = ctlr->lp;
437 
438 	if (unlikely(lport == NULL)) {
439 		printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
440 		goto err;
441 	}
442 
443 	skb = skb_share_check(skb, GFP_ATOMIC);
444 	if (!skb)
445 		return -1;
446 
447 	if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
448 		printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
449 		goto err;
450 	}
451 
452 	/*
453 	 * Check for minimum frame length, and make sure required FCoE
454 	 * and FC headers are pulled into the linear data area.
455 	 */
456 	if (unlikely((skb->len < FCOE_MIN_FRAME) ||
457 	    !pskb_may_pull(skb, FCOE_HEADER_LEN)))
458 		goto err;
459 
460 	skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
461 
462 	fr = fcoe_dev_from_skb(skb);
463 	fr->fr_dev = lport;
464 
465 	bg = &bnx2fc_global;
466 	spin_lock(&bg->fcoe_rx_list.lock);
467 
468 	__skb_queue_tail(&bg->fcoe_rx_list, skb);
469 	if (bg->fcoe_rx_list.qlen == 1)
470 		wake_up_process(bg->kthread);
471 
472 	spin_unlock(&bg->fcoe_rx_list.lock);
473 
474 	return 0;
475 err:
476 	kfree_skb(skb);
477 	return -1;
478 }
479 
bnx2fc_l2_rcv_thread(void * arg)480 static int bnx2fc_l2_rcv_thread(void *arg)
481 {
482 	struct fcoe_percpu_s *bg = arg;
483 	struct sk_buff *skb;
484 
485 	set_user_nice(current, MIN_NICE);
486 	set_current_state(TASK_INTERRUPTIBLE);
487 	while (!kthread_should_stop()) {
488 		schedule();
489 		spin_lock_bh(&bg->fcoe_rx_list.lock);
490 		while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
491 			spin_unlock_bh(&bg->fcoe_rx_list.lock);
492 			bnx2fc_recv_frame(skb);
493 			spin_lock_bh(&bg->fcoe_rx_list.lock);
494 		}
495 		__set_current_state(TASK_INTERRUPTIBLE);
496 		spin_unlock_bh(&bg->fcoe_rx_list.lock);
497 	}
498 	__set_current_state(TASK_RUNNING);
499 	return 0;
500 }
501 
502 
bnx2fc_recv_frame(struct sk_buff * skb)503 static void bnx2fc_recv_frame(struct sk_buff *skb)
504 {
505 	u64 crc_err;
506 	u32 fr_len, fr_crc;
507 	struct fc_lport *lport;
508 	struct fcoe_rcv_info *fr;
509 	struct fc_frame_header *fh;
510 	struct fcoe_crc_eof crc_eof;
511 	struct fc_frame *fp;
512 	struct fc_lport *vn_port;
513 	struct fcoe_port *port, *phys_port;
514 	u8 *mac = NULL;
515 	u8 *dest_mac = NULL;
516 	struct fcoe_hdr *hp;
517 	struct bnx2fc_interface *interface;
518 	struct fcoe_ctlr *ctlr;
519 
520 	fr = fcoe_dev_from_skb(skb);
521 	lport = fr->fr_dev;
522 	if (unlikely(lport == NULL)) {
523 		printk(KERN_ERR PFX "Invalid lport struct\n");
524 		kfree_skb(skb);
525 		return;
526 	}
527 
528 	if (skb_is_nonlinear(skb))
529 		skb_linearize(skb);
530 	mac = eth_hdr(skb)->h_source;
531 	dest_mac = eth_hdr(skb)->h_dest;
532 
533 	/* Pull the header */
534 	hp = (struct fcoe_hdr *) skb_network_header(skb);
535 	fh = (struct fc_frame_header *) skb_transport_header(skb);
536 	skb_pull(skb, sizeof(struct fcoe_hdr));
537 	fr_len = skb->len - sizeof(struct fcoe_crc_eof);
538 
539 	this_cpu_inc(lport->stats->RxFrames);
540 	this_cpu_add(lport->stats->RxWords, fr_len / FCOE_WORD_TO_BYTE);
541 
542 	fp = (struct fc_frame *)skb;
543 	fc_frame_init(fp);
544 	fr_dev(fp) = lport;
545 	fr_sof(fp) = hp->fcoe_sof;
546 	if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
547 		kfree_skb(skb);
548 		return;
549 	}
550 	fr_eof(fp) = crc_eof.fcoe_eof;
551 	fr_crc(fp) = crc_eof.fcoe_crc32;
552 	if (pskb_trim(skb, fr_len)) {
553 		kfree_skb(skb);
554 		return;
555 	}
556 
557 	phys_port = lport_priv(lport);
558 	interface = phys_port->priv;
559 	ctlr = bnx2fc_to_ctlr(interface);
560 
561 	fh = fc_frame_header_get(fp);
562 
563 	if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
564 		BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n",
565 		    dest_mac);
566 		kfree_skb(skb);
567 		return;
568 	}
569 
570 	vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
571 	if (vn_port) {
572 		port = lport_priv(vn_port);
573 		if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
574 			BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
575 			kfree_skb(skb);
576 			return;
577 		}
578 	}
579 	if (ctlr->state) {
580 		if (!ether_addr_equal(mac, ctlr->dest_addr)) {
581 			BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n",
582 			    mac, ctlr->dest_addr);
583 			kfree_skb(skb);
584 			return;
585 		}
586 	}
587 	if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
588 	    fh->fh_type == FC_TYPE_FCP) {
589 		/* Drop FCP data. We dont this in L2 path */
590 		kfree_skb(skb);
591 		return;
592 	}
593 	if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
594 	    fh->fh_type == FC_TYPE_ELS) {
595 		switch (fc_frame_payload_op(fp)) {
596 		case ELS_LOGO:
597 			if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
598 				/* drop non-FIP LOGO */
599 				kfree_skb(skb);
600 				return;
601 			}
602 			break;
603 		}
604 	}
605 
606 	if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
607 		/* Drop incoming ABTS */
608 		kfree_skb(skb);
609 		return;
610 	}
611 
612 	/*
613 	 * If the destination ID from the frame header does not match what we
614 	 * have on record for lport and the search for a NPIV port came up
615 	 * empty then this is not addressed to our port so simply drop it.
616 	 */
617 	if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
618 		BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
619 		    lport->port_id, ntoh24(fh->fh_d_id));
620 		kfree_skb(skb);
621 		return;
622 	}
623 
624 	fr_crc = le32_to_cpu(fr_crc(fp));
625 
626 	if (unlikely(fr_crc != ~crc32(~0, skb->data, fr_len))) {
627 		crc_err = this_cpu_inc_return(lport->stats->InvalidCRCCount);
628 		if (crc_err < 5)
629 			printk(KERN_WARNING PFX "dropping frame with "
630 			       "CRC error\n");
631 		kfree_skb(skb);
632 		return;
633 	}
634 	fc_exch_recv(lport, fp);
635 }
636 
637 /**
638  * bnx2fc_percpu_io_thread - thread per cpu for ios
639  *
640  * @arg:	ptr to bnx2fc_percpu_info structure
641  */
bnx2fc_percpu_io_thread(void * arg)642 static int bnx2fc_percpu_io_thread(void *arg)
643 {
644 	struct bnx2fc_percpu_s *p = arg;
645 	struct bnx2fc_work *work, *tmp;
646 	LIST_HEAD(work_list);
647 
648 	set_user_nice(current, MIN_NICE);
649 	set_current_state(TASK_INTERRUPTIBLE);
650 	while (!kthread_should_stop()) {
651 		schedule();
652 		spin_lock_bh(&p->fp_work_lock);
653 		while (!list_empty(&p->work_list)) {
654 			list_splice_init(&p->work_list, &work_list);
655 			spin_unlock_bh(&p->fp_work_lock);
656 
657 			list_for_each_entry_safe(work, tmp, &work_list, list) {
658 				list_del_init(&work->list);
659 				bnx2fc_process_cq_compl(work->tgt, work->wqe,
660 							work->rq_data,
661 							work->num_rq,
662 							work->task);
663 				kfree(work);
664 			}
665 
666 			spin_lock_bh(&p->fp_work_lock);
667 		}
668 		__set_current_state(TASK_INTERRUPTIBLE);
669 		spin_unlock_bh(&p->fp_work_lock);
670 	}
671 	__set_current_state(TASK_RUNNING);
672 
673 	return 0;
674 }
675 
bnx2fc_get_host_stats(struct Scsi_Host * shost)676 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
677 {
678 	struct fc_host_statistics *bnx2fc_stats;
679 	struct fc_lport *lport = shost_priv(shost);
680 	struct fcoe_port *port = lport_priv(lport);
681 	struct bnx2fc_interface *interface = port->priv;
682 	struct bnx2fc_hba *hba = interface->hba;
683 	struct fcoe_statistics_params *fw_stats;
684 	int rc = 0;
685 
686 	fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
687 	if (!fw_stats)
688 		return NULL;
689 
690 	mutex_lock(&hba->hba_stats_mutex);
691 
692 	bnx2fc_stats = fc_get_host_stats(shost);
693 
694 	init_completion(&hba->stat_req_done);
695 	if (bnx2fc_send_stat_req(hba))
696 		goto unlock_stats_mutex;
697 	rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
698 	if (!rc) {
699 		BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
700 		goto unlock_stats_mutex;
701 	}
702 	BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
703 	bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
704 	BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
705 	bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
706 	BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
707 	bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
708 	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
709 	bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
710 	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
711 	bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
712 
713 	bnx2fc_stats->dumped_frames = 0;
714 	bnx2fc_stats->lip_count = 0;
715 	bnx2fc_stats->nos_count = 0;
716 	bnx2fc_stats->loss_of_sync_count = 0;
717 	bnx2fc_stats->loss_of_signal_count = 0;
718 	bnx2fc_stats->prim_seq_protocol_err_count = 0;
719 
720 	memcpy(&hba->prev_stats, hba->stats_buffer,
721 	       sizeof(struct fcoe_statistics_params));
722 
723 unlock_stats_mutex:
724 	mutex_unlock(&hba->hba_stats_mutex);
725 	return bnx2fc_stats;
726 }
727 
bnx2fc_shost_config(struct fc_lport * lport,struct device * dev)728 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
729 {
730 	struct fcoe_port *port = lport_priv(lport);
731 	struct bnx2fc_interface *interface = port->priv;
732 	struct bnx2fc_hba *hba = interface->hba;
733 	struct Scsi_Host *shost = lport->host;
734 	int rc = 0;
735 
736 	shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
737 	shost->max_lun = bnx2fc_max_luns;
738 	shost->max_id = BNX2FC_MAX_FCP_TGT;
739 	shost->max_channel = 0;
740 	if (lport->vport)
741 		shost->transportt = bnx2fc_vport_xport_template;
742 	else
743 		shost->transportt = bnx2fc_transport_template;
744 
745 	/* Add the new host to SCSI-ml */
746 	rc = scsi_add_host(lport->host, dev);
747 	if (rc) {
748 		printk(KERN_ERR PFX "Error on scsi_add_host\n");
749 		return rc;
750 	}
751 	if (!lport->vport)
752 		fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
753 	snprintf(fc_host_symbolic_name(lport->host), 256,
754 		 "%s (QLogic %s) v%s over %s",
755 		BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
756 		interface->netdev->name);
757 
758 	return 0;
759 }
760 
bnx2fc_link_ok(struct fc_lport * lport)761 static int bnx2fc_link_ok(struct fc_lport *lport)
762 {
763 	struct fcoe_port *port = lport_priv(lport);
764 	struct bnx2fc_interface *interface = port->priv;
765 	struct bnx2fc_hba *hba = interface->hba;
766 	struct net_device *dev = hba->phys_dev;
767 	int rc = 0;
768 
769 	if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
770 		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
771 	else {
772 		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
773 		rc = -1;
774 	}
775 	return rc;
776 }
777 
778 /**
779  * bnx2fc_get_link_state - get network link state
780  *
781  * @hba:	adapter instance pointer
782  *
783  * updates adapter structure flag based on netdev state
784  */
bnx2fc_get_link_state(struct bnx2fc_hba * hba)785 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
786 {
787 	if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
788 		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
789 	else
790 		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
791 }
792 
bnx2fc_net_config(struct fc_lport * lport,struct net_device * netdev)793 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
794 {
795 	struct bnx2fc_hba *hba;
796 	struct bnx2fc_interface *interface;
797 	struct fcoe_ctlr *ctlr;
798 	struct fcoe_port *port;
799 	u64 wwnn, wwpn;
800 
801 	port = lport_priv(lport);
802 	interface = port->priv;
803 	ctlr = bnx2fc_to_ctlr(interface);
804 	hba = interface->hba;
805 
806 	/* require support for get_pauseparam ethtool op. */
807 	if (!hba->phys_dev->ethtool_ops ||
808 	    !hba->phys_dev->ethtool_ops->get_pauseparam)
809 		return -EOPNOTSUPP;
810 
811 	if (fc_set_mfs(lport, BNX2FC_MFS))
812 		return -EINVAL;
813 
814 	skb_queue_head_init(&port->fcoe_pending_queue);
815 	port->fcoe_pending_queue_active = 0;
816 	timer_setup(&port->timer, fcoe_queue_timer, 0);
817 
818 	fcoe_link_speed_update(lport);
819 
820 	if (!lport->vport) {
821 		if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
822 			wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
823 						 1, 0);
824 		BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
825 		fc_set_wwnn(lport, wwnn);
826 
827 		if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
828 			wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
829 						 2, 0);
830 
831 		BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
832 		fc_set_wwpn(lport, wwpn);
833 	}
834 
835 	return 0;
836 }
837 
bnx2fc_destroy_timer(struct timer_list * t)838 static void bnx2fc_destroy_timer(struct timer_list *t)
839 {
840 	struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer);
841 
842 	printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
843 	       "Destroy compl not received!!\n");
844 	set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
845 	wake_up_interruptible(&hba->destroy_wait);
846 }
847 
848 /**
849  * bnx2fc_indicate_netevent - Generic netdev event handler
850  *
851  * @context:	adapter structure pointer
852  * @event:	event type
853  * @vlan_id:	vlan id - associated vlan id with this event
854  *
855  * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
856  * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
857  */
bnx2fc_indicate_netevent(void * context,unsigned long event,u16 vlan_id)858 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
859 				     u16 vlan_id)
860 {
861 	struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
862 	struct fcoe_ctlr_device *cdev;
863 	struct fc_lport *lport;
864 	struct fc_lport *vport;
865 	struct bnx2fc_interface *interface, *tmp;
866 	struct fcoe_ctlr *ctlr;
867 	int wait_for_upload = 0;
868 	u32 link_possible = 1;
869 
870 	if (vlan_id != 0 && event != NETDEV_UNREGISTER)
871 		return;
872 
873 	switch (event) {
874 	case NETDEV_UP:
875 		if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
876 			printk(KERN_ERR "indicate_netevent: "\
877 					"hba is not UP!!\n");
878 		break;
879 
880 	case NETDEV_DOWN:
881 		clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
882 		clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
883 		link_possible = 0;
884 		break;
885 
886 	case NETDEV_GOING_DOWN:
887 		set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
888 		link_possible = 0;
889 		break;
890 
891 	case NETDEV_CHANGE:
892 		break;
893 
894 	case NETDEV_UNREGISTER:
895 		if (!vlan_id)
896 			return;
897 		mutex_lock(&bnx2fc_dev_lock);
898 		list_for_each_entry_safe(interface, tmp, &if_list, list) {
899 			if (interface->hba == hba &&
900 			    interface->vlan_id == (vlan_id & VLAN_VID_MASK))
901 				__bnx2fc_destroy(interface);
902 		}
903 		mutex_unlock(&bnx2fc_dev_lock);
904 		return;
905 
906 	default:
907 		return;
908 	}
909 
910 	mutex_lock(&bnx2fc_dev_lock);
911 	list_for_each_entry(interface, &if_list, list) {
912 
913 		if (interface->hba != hba)
914 			continue;
915 
916 		ctlr = bnx2fc_to_ctlr(interface);
917 		lport = ctlr->lp;
918 		BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
919 				interface->netdev->name, event);
920 
921 		fcoe_link_speed_update(lport);
922 
923 		cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
924 
925 		if (link_possible && !bnx2fc_link_ok(lport)) {
926 			switch (cdev->enabled) {
927 			case FCOE_CTLR_DISABLED:
928 				pr_info("Link up while interface is disabled.\n");
929 				break;
930 			case FCOE_CTLR_ENABLED:
931 			case FCOE_CTLR_UNUSED:
932 				/* Reset max recv frame size to default */
933 				fc_set_mfs(lport, BNX2FC_MFS);
934 				/*
935 				 * ctlr link up will only be handled during
936 				 * enable to avoid sending discovery
937 				 * solicitation on a stale vlan
938 				 */
939 				if (interface->enabled)
940 					fcoe_ctlr_link_up(ctlr);
941 			}
942 		} else if (fcoe_ctlr_link_down(ctlr)) {
943 			switch (cdev->enabled) {
944 			case FCOE_CTLR_DISABLED:
945 				pr_info("Link down while interface is disabled.\n");
946 				break;
947 			case FCOE_CTLR_ENABLED:
948 			case FCOE_CTLR_UNUSED:
949 				mutex_lock(&lport->lp_mutex);
950 				list_for_each_entry(vport, &lport->vports, list)
951 					fc_host_port_type(vport->host) =
952 					FC_PORTTYPE_UNKNOWN;
953 				mutex_unlock(&lport->lp_mutex);
954 				fc_host_port_type(lport->host) =
955 					FC_PORTTYPE_UNKNOWN;
956 				this_cpu_inc(lport->stats->LinkFailureCount);
957 				fcoe_clean_pending_queue(lport);
958 				wait_for_upload = 1;
959 			}
960 		}
961 	}
962 	mutex_unlock(&bnx2fc_dev_lock);
963 
964 	if (wait_for_upload) {
965 		clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
966 		init_waitqueue_head(&hba->shutdown_wait);
967 		BNX2FC_MISC_DBG("indicate_netevent "
968 				"num_ofld_sess = %d\n",
969 				hba->num_ofld_sess);
970 		hba->wait_for_link_down = 1;
971 		wait_event_interruptible(hba->shutdown_wait,
972 					 (hba->num_ofld_sess == 0));
973 		BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
974 				hba->num_ofld_sess);
975 		hba->wait_for_link_down = 0;
976 
977 		if (signal_pending(current))
978 			flush_signals(current);
979 	}
980 }
981 
bnx2fc_libfc_config(struct fc_lport * lport)982 static int bnx2fc_libfc_config(struct fc_lport *lport)
983 {
984 
985 	/* Set the function pointers set by bnx2fc driver */
986 	memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
987 		sizeof(struct libfc_function_template));
988 	fc_elsct_init(lport);
989 	fc_exch_init(lport);
990 	fc_disc_init(lport);
991 	fc_disc_config(lport, lport);
992 	return 0;
993 }
994 
bnx2fc_em_config(struct fc_lport * lport,struct bnx2fc_hba * hba)995 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
996 {
997 	int fcoe_min_xid, fcoe_max_xid;
998 
999 	fcoe_min_xid = hba->max_xid + 1;
1000 	if (nr_cpu_ids <= 2)
1001 		fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
1002 	else
1003 		fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
1004 	if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
1005 			       fcoe_max_xid, NULL)) {
1006 		printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
1007 		return -ENOMEM;
1008 	}
1009 
1010 	return 0;
1011 }
1012 
bnx2fc_lport_config(struct fc_lport * lport)1013 static int bnx2fc_lport_config(struct fc_lport *lport)
1014 {
1015 	lport->link_up = 0;
1016 	lport->qfull = 0;
1017 	lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
1018 	lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
1019 	lport->e_d_tov = 2 * 1000;
1020 	lport->r_a_tov = 10 * 1000;
1021 
1022 	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1023 				FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1024 	lport->does_npiv = 1;
1025 
1026 	memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1027 	lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1028 
1029 	/* alloc stats structure */
1030 	if (fc_lport_init_stats(lport))
1031 		return -ENOMEM;
1032 
1033 	/* Finish fc_lport configuration */
1034 	fc_lport_config(lport);
1035 
1036 	return 0;
1037 }
1038 
1039 /**
1040  * bnx2fc_fip_recv - handle a received FIP frame.
1041  *
1042  * @skb: the received skb
1043  * @dev: associated &net_device
1044  * @ptype: the &packet_type structure which was used to register this handler.
1045  * @orig_dev: original receive &net_device, in case @ dev is a bond.
1046  *
1047  * Returns: 0 for success
1048  */
bnx2fc_fip_recv(struct sk_buff * skb,struct net_device * dev,struct packet_type * ptype,struct net_device * orig_dev)1049 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1050 			   struct packet_type *ptype,
1051 			   struct net_device *orig_dev)
1052 {
1053 	struct bnx2fc_interface *interface;
1054 	struct fcoe_ctlr *ctlr;
1055 	interface = container_of(ptype, struct bnx2fc_interface,
1056 				 fip_packet_type);
1057 	ctlr = bnx2fc_to_ctlr(interface);
1058 	fcoe_ctlr_recv(ctlr, skb);
1059 	return 0;
1060 }
1061 
1062 /**
1063  * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1064  *
1065  * @lport: The local port
1066  * @addr: Location of data to copy
1067  *
1068  * Remove any previously-set unicast MAC filter.
1069  * Add secondary FCoE MAC address filter for our OUI.
1070  */
bnx2fc_update_src_mac(struct fc_lport * lport,u8 * addr)1071 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1072 {
1073 	struct fcoe_port *port = lport_priv(lport);
1074 
1075 	memcpy(port->data_src_addr, addr, ETH_ALEN);
1076 }
1077 
1078 /**
1079  * bnx2fc_get_src_mac - return the ethernet source address for an lport
1080  *
1081  * @lport: libfc port
1082  */
bnx2fc_get_src_mac(struct fc_lport * lport)1083 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1084 {
1085 	struct fcoe_port *port;
1086 
1087 	port = (struct fcoe_port *)lport_priv(lport);
1088 	return port->data_src_addr;
1089 }
1090 
1091 /**
1092  * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1093  *
1094  * @fip: FCoE controller.
1095  * @skb: FIP Packet.
1096  */
bnx2fc_fip_send(struct fcoe_ctlr * fip,struct sk_buff * skb)1097 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1098 {
1099 	struct fip_header *fiph;
1100 	struct ethhdr *eth_hdr;
1101 	u16 op;
1102 	u8 sub;
1103 
1104 	fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
1105 	eth_hdr = (struct ethhdr *)skb_mac_header(skb);
1106 	op = ntohs(fiph->fip_op);
1107 	sub = fiph->fip_subcode;
1108 
1109 	if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
1110 		BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
1111 		    eth_hdr->h_source, eth_hdr->h_dest);
1112 
1113 	skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1114 	dev_queue_xmit(skb);
1115 }
1116 
bnx2fc_vport_create(struct fc_vport * vport,bool disabled)1117 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1118 {
1119 	struct Scsi_Host *shost = vport_to_shost(vport);
1120 	struct fc_lport *n_port = shost_priv(shost);
1121 	struct fcoe_port *port = lport_priv(n_port);
1122 	struct bnx2fc_interface *interface = port->priv;
1123 	struct net_device *netdev = interface->netdev;
1124 	struct fc_lport *vn_port;
1125 	int rc;
1126 	char buf[32];
1127 
1128 	rc = fcoe_validate_vport_create(vport);
1129 	if (rc) {
1130 		fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1131 		printk(KERN_ERR PFX "Failed to create vport, "
1132 		       "WWPN (0x%s) already exists\n",
1133 		       buf);
1134 		return rc;
1135 	}
1136 
1137 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1138 		printk(KERN_ERR PFX "vn ports cannot be created on"
1139 			"this interface\n");
1140 		return -EIO;
1141 	}
1142 	rtnl_lock();
1143 	mutex_lock(&bnx2fc_dev_lock);
1144 	vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1145 	mutex_unlock(&bnx2fc_dev_lock);
1146 	rtnl_unlock();
1147 
1148 	if (!vn_port) {
1149 		printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1150 			netdev->name);
1151 		return -EIO;
1152 	}
1153 
1154 	if (bnx2fc_devloss_tmo)
1155 		fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
1156 
1157 	if (disabled) {
1158 		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1159 	} else {
1160 		vn_port->boot_time = jiffies;
1161 		fc_lport_init(vn_port);
1162 		fc_fabric_login(vn_port);
1163 		fc_vport_setlink(vn_port);
1164 	}
1165 	return 0;
1166 }
1167 
bnx2fc_free_vport(struct bnx2fc_hba * hba,struct fc_lport * lport)1168 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1169 {
1170 	struct bnx2fc_lport *blport, *tmp;
1171 
1172 	spin_lock_bh(&hba->hba_lock);
1173 	list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1174 		if (blport->lport == lport) {
1175 			list_del(&blport->list);
1176 			kfree(blport);
1177 		}
1178 	}
1179 	spin_unlock_bh(&hba->hba_lock);
1180 }
1181 
bnx2fc_vport_destroy(struct fc_vport * vport)1182 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1183 {
1184 	struct Scsi_Host *shost = vport_to_shost(vport);
1185 	struct fc_lport *n_port = shost_priv(shost);
1186 	struct fc_lport *vn_port = vport->dd_data;
1187 	struct fcoe_port *port = lport_priv(vn_port);
1188 	struct bnx2fc_interface *interface = port->priv;
1189 	struct fc_lport *v_port;
1190 	bool found = false;
1191 
1192 	mutex_lock(&n_port->lp_mutex);
1193 	list_for_each_entry(v_port, &n_port->vports, list)
1194 		if (v_port->vport == vport) {
1195 			found = true;
1196 			break;
1197 		}
1198 
1199 	if (!found) {
1200 		mutex_unlock(&n_port->lp_mutex);
1201 		return -ENOENT;
1202 	}
1203 	list_del(&vn_port->list);
1204 	mutex_unlock(&n_port->lp_mutex);
1205 	bnx2fc_free_vport(interface->hba, port->lport);
1206 	bnx2fc_port_shutdown(port->lport);
1207 	bnx2fc_port_destroy(port);
1208 	bnx2fc_interface_put(interface);
1209 	return 0;
1210 }
1211 
bnx2fc_vport_disable(struct fc_vport * vport,bool disable)1212 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1213 {
1214 	struct fc_lport *lport = vport->dd_data;
1215 
1216 	if (disable) {
1217 		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1218 		fc_fabric_logoff(lport);
1219 	} else {
1220 		lport->boot_time = jiffies;
1221 		fc_fabric_login(lport);
1222 		fc_vport_setlink(lport);
1223 	}
1224 	return 0;
1225 }
1226 
1227 
bnx2fc_interface_setup(struct bnx2fc_interface * interface)1228 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1229 {
1230 	struct net_device *netdev = interface->netdev;
1231 	struct net_device *physdev = interface->hba->phys_dev;
1232 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1233 	struct netdev_hw_addr *ha;
1234 	int sel_san_mac = 0;
1235 
1236 	/* setup Source MAC Address */
1237 	rcu_read_lock();
1238 	for_each_dev_addr(physdev, ha) {
1239 		BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1240 				ha->type);
1241 		printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1242 				ha->addr[1], ha->addr[2], ha->addr[3],
1243 				ha->addr[4], ha->addr[5]);
1244 
1245 		if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1246 		    (is_valid_ether_addr(ha->addr))) {
1247 			memcpy(ctlr->ctl_src_addr, ha->addr,
1248 			       ETH_ALEN);
1249 			sel_san_mac = 1;
1250 			BNX2FC_MISC_DBG("Found SAN MAC\n");
1251 		}
1252 	}
1253 	rcu_read_unlock();
1254 
1255 	if (!sel_san_mac)
1256 		return -ENODEV;
1257 
1258 	interface->fip_packet_type.func = bnx2fc_fip_recv;
1259 	interface->fip_packet_type.type = htons(ETH_P_FIP);
1260 	interface->fip_packet_type.dev = netdev;
1261 	dev_add_pack(&interface->fip_packet_type);
1262 
1263 	interface->fcoe_packet_type.func = bnx2fc_rcv;
1264 	interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1265 	interface->fcoe_packet_type.dev = netdev;
1266 	dev_add_pack(&interface->fcoe_packet_type);
1267 
1268 	return 0;
1269 }
1270 
bnx2fc_attach_transport(void)1271 static int bnx2fc_attach_transport(void)
1272 {
1273 	bnx2fc_transport_template =
1274 		fc_attach_transport(&bnx2fc_transport_function);
1275 
1276 	if (bnx2fc_transport_template == NULL) {
1277 		printk(KERN_ERR PFX "Failed to attach FC transport\n");
1278 		return -ENODEV;
1279 	}
1280 
1281 	bnx2fc_vport_xport_template =
1282 		fc_attach_transport(&bnx2fc_vport_xport_function);
1283 	if (bnx2fc_vport_xport_template == NULL) {
1284 		printk(KERN_ERR PFX
1285 		       "Failed to attach FC transport for vport\n");
1286 		fc_release_transport(bnx2fc_transport_template);
1287 		bnx2fc_transport_template = NULL;
1288 		return -ENODEV;
1289 	}
1290 	return 0;
1291 }
bnx2fc_release_transport(void)1292 static void bnx2fc_release_transport(void)
1293 {
1294 	fc_release_transport(bnx2fc_transport_template);
1295 	fc_release_transport(bnx2fc_vport_xport_template);
1296 	bnx2fc_transport_template = NULL;
1297 	bnx2fc_vport_xport_template = NULL;
1298 }
1299 
bnx2fc_interface_release(struct kref * kref)1300 static void bnx2fc_interface_release(struct kref *kref)
1301 {
1302 	struct fcoe_ctlr_device *ctlr_dev;
1303 	struct bnx2fc_interface *interface;
1304 	struct fcoe_ctlr *ctlr;
1305 	struct net_device *netdev;
1306 
1307 	interface = container_of(kref, struct bnx2fc_interface, kref);
1308 	BNX2FC_MISC_DBG("Interface is being released\n");
1309 
1310 	ctlr = bnx2fc_to_ctlr(interface);
1311 	ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1312 	netdev = interface->netdev;
1313 
1314 	/* tear-down FIP controller */
1315 	if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1316 		fcoe_ctlr_destroy(ctlr);
1317 
1318 	fcoe_ctlr_device_delete(ctlr_dev);
1319 
1320 	dev_put(netdev);
1321 	module_put(THIS_MODULE);
1322 }
1323 
bnx2fc_interface_get(struct bnx2fc_interface * interface)1324 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1325 {
1326 	kref_get(&interface->kref);
1327 }
1328 
bnx2fc_interface_put(struct bnx2fc_interface * interface)1329 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1330 {
1331 	kref_put(&interface->kref, bnx2fc_interface_release);
1332 }
bnx2fc_hba_destroy(struct bnx2fc_hba * hba)1333 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1334 {
1335 	/* Free the command manager */
1336 	if (hba->cmd_mgr) {
1337 		bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1338 		hba->cmd_mgr = NULL;
1339 	}
1340 	kfree(hba->tgt_ofld_list);
1341 	bnx2fc_unbind_pcidev(hba);
1342 	kfree(hba);
1343 }
1344 
1345 /**
1346  * bnx2fc_hba_create - create a new bnx2fc hba
1347  *
1348  * @cnic:	pointer to cnic device
1349  *
1350  * Creates a new FCoE hba on the given device.
1351  *
1352  */
bnx2fc_hba_create(struct cnic_dev * cnic)1353 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1354 {
1355 	struct bnx2fc_hba *hba;
1356 	struct fcoe_capabilities *fcoe_cap;
1357 	int rc;
1358 
1359 	hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1360 	if (!hba) {
1361 		printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1362 		return NULL;
1363 	}
1364 	spin_lock_init(&hba->hba_lock);
1365 	mutex_init(&hba->hba_mutex);
1366 	mutex_init(&hba->hba_stats_mutex);
1367 
1368 	hba->cnic = cnic;
1369 
1370 	hba->max_tasks = cnic->max_fcoe_exchanges;
1371 	hba->elstm_xids = (hba->max_tasks / 2);
1372 	hba->max_outstanding_cmds = hba->elstm_xids;
1373 	hba->max_xid = (hba->max_tasks - 1);
1374 
1375 	rc = bnx2fc_bind_pcidev(hba);
1376 	if (rc) {
1377 		printk(KERN_ERR PFX "create_adapter:  bind error\n");
1378 		goto bind_err;
1379 	}
1380 	hba->phys_dev = cnic->netdev;
1381 	hba->next_conn_id = 0;
1382 
1383 	hba->tgt_ofld_list =
1384 		kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *),
1385 			GFP_KERNEL);
1386 	if (!hba->tgt_ofld_list) {
1387 		printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1388 		goto tgtofld_err;
1389 	}
1390 
1391 	hba->num_ofld_sess = 0;
1392 
1393 	hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1394 	if (!hba->cmd_mgr) {
1395 		printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1396 		goto cmgr_err;
1397 	}
1398 	fcoe_cap = &hba->fcoe_cap;
1399 
1400 	fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1401 					FCOE_IOS_PER_CONNECTION_SHIFT;
1402 	fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1403 					FCOE_LOGINS_PER_PORT_SHIFT;
1404 	fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1405 					FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1406 	fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1407 					FCOE_NPIV_WWN_PER_PORT_SHIFT;
1408 	fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1409 					FCOE_TARGETS_SUPPORTED_SHIFT;
1410 	fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1411 					FCOE_OUTSTANDING_COMMANDS_SHIFT;
1412 	fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1413 
1414 	init_waitqueue_head(&hba->shutdown_wait);
1415 	init_waitqueue_head(&hba->destroy_wait);
1416 	INIT_LIST_HEAD(&hba->vports);
1417 
1418 	return hba;
1419 
1420 cmgr_err:
1421 	kfree(hba->tgt_ofld_list);
1422 tgtofld_err:
1423 	bnx2fc_unbind_pcidev(hba);
1424 bind_err:
1425 	kfree(hba);
1426 	return NULL;
1427 }
1428 
1429 static struct bnx2fc_interface *
bnx2fc_interface_create(struct bnx2fc_hba * hba,struct net_device * netdev,enum fip_mode fip_mode)1430 bnx2fc_interface_create(struct bnx2fc_hba *hba,
1431 			struct net_device *netdev,
1432 			enum fip_mode fip_mode)
1433 {
1434 	struct fcoe_ctlr_device *ctlr_dev;
1435 	struct bnx2fc_interface *interface;
1436 	struct fcoe_ctlr *ctlr;
1437 	int size;
1438 	int rc = 0;
1439 
1440 	size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1441 	ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1442 					 size);
1443 	if (!ctlr_dev) {
1444 		printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1445 		return NULL;
1446 	}
1447 	ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1448 	ctlr->cdev = ctlr_dev;
1449 	interface = fcoe_ctlr_priv(ctlr);
1450 	dev_hold(netdev);
1451 	kref_init(&interface->kref);
1452 	interface->hba = hba;
1453 	interface->netdev = netdev;
1454 
1455 	/* Initialize FIP */
1456 	fcoe_ctlr_init(ctlr, fip_mode);
1457 	ctlr->send = bnx2fc_fip_send;
1458 	ctlr->update_mac = bnx2fc_update_src_mac;
1459 	ctlr->get_src_addr = bnx2fc_get_src_mac;
1460 	set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1461 
1462 	rc = bnx2fc_interface_setup(interface);
1463 	if (!rc)
1464 		return interface;
1465 
1466 	fcoe_ctlr_destroy(ctlr);
1467 	dev_put(netdev);
1468 	fcoe_ctlr_device_delete(ctlr_dev);
1469 	return NULL;
1470 }
1471 
1472 /**
1473  * bnx2fc_if_create - Create FCoE instance on a given interface
1474  *
1475  * @interface:	FCoE interface to create a local port on
1476  * @parent:	Device pointer to be the parent in sysfs for the SCSI host
1477  * @npiv:	Indicates if the port is vport or not
1478  *
1479  * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1480  *
1481  * Returns:	Allocated fc_lport or an error pointer
1482  */
bnx2fc_if_create(struct bnx2fc_interface * interface,struct device * parent,int npiv)1483 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1484 				  struct device *parent, int npiv)
1485 {
1486 	struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1487 	struct fc_lport		*lport, *n_port;
1488 	struct fcoe_port	*port;
1489 	struct Scsi_Host	*shost;
1490 	struct fc_vport		*vport = dev_to_vport(parent);
1491 	struct bnx2fc_lport	*blport;
1492 	struct bnx2fc_hba	*hba = interface->hba;
1493 	int			rc = 0;
1494 
1495 	blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1496 	if (!blport) {
1497 		BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1498 		return NULL;
1499 	}
1500 
1501 	/* Allocate Scsi_Host structure */
1502 	bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1503 	if (!npiv)
1504 		lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1505 	else
1506 		lport = libfc_vport_create(vport, sizeof(*port));
1507 
1508 	if (!lport) {
1509 		printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1510 		goto free_blport;
1511 	}
1512 	shost = lport->host;
1513 	port = lport_priv(lport);
1514 	port->lport = lport;
1515 	port->priv = interface;
1516 	port->get_netdev = bnx2fc_netdev;
1517 
1518 	/* Configure fcoe_port */
1519 	rc = bnx2fc_lport_config(lport);
1520 	if (rc)
1521 		goto lp_config_err;
1522 
1523 	if (npiv) {
1524 		printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1525 			vport->node_name, vport->port_name);
1526 		fc_set_wwnn(lport, vport->node_name);
1527 		fc_set_wwpn(lport, vport->port_name);
1528 	}
1529 	/* Configure netdev and networking properties of the lport */
1530 	rc = bnx2fc_net_config(lport, interface->netdev);
1531 	if (rc) {
1532 		printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1533 		goto lp_config_err;
1534 	}
1535 
1536 	rc = bnx2fc_shost_config(lport, parent);
1537 	if (rc) {
1538 		printk(KERN_ERR PFX "Couldn't configure shost for %s\n",
1539 			interface->netdev->name);
1540 		goto lp_config_err;
1541 	}
1542 
1543 	/* Initialize the libfc library */
1544 	rc = bnx2fc_libfc_config(lport);
1545 	if (rc) {
1546 		printk(KERN_ERR PFX "Couldn't configure libfc\n");
1547 		goto shost_err;
1548 	}
1549 	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1550 
1551 	if (bnx2fc_devloss_tmo)
1552 		fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo;
1553 
1554 	/* Allocate exchange manager */
1555 	if (!npiv)
1556 		rc = bnx2fc_em_config(lport, hba);
1557 	else {
1558 		shost = vport_to_shost(vport);
1559 		n_port = shost_priv(shost);
1560 		rc = fc_exch_mgr_list_clone(n_port, lport);
1561 	}
1562 
1563 	if (rc) {
1564 		printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1565 		goto shost_err;
1566 	}
1567 
1568 	bnx2fc_interface_get(interface);
1569 
1570 	spin_lock_bh(&hba->hba_lock);
1571 	blport->lport = lport;
1572 	list_add_tail(&blport->list, &hba->vports);
1573 	spin_unlock_bh(&hba->hba_lock);
1574 
1575 	return lport;
1576 
1577 shost_err:
1578 	scsi_remove_host(shost);
1579 lp_config_err:
1580 	scsi_host_put(lport->host);
1581 free_blport:
1582 	kfree(blport);
1583 	return NULL;
1584 }
1585 
bnx2fc_net_cleanup(struct bnx2fc_interface * interface)1586 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1587 {
1588 	/* Dont listen for Ethernet packets anymore */
1589 	__dev_remove_pack(&interface->fcoe_packet_type);
1590 	__dev_remove_pack(&interface->fip_packet_type);
1591 	synchronize_net();
1592 }
1593 
bnx2fc_interface_cleanup(struct bnx2fc_interface * interface)1594 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1595 {
1596 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1597 	struct fc_lport *lport = ctlr->lp;
1598 	struct fcoe_port *port = lport_priv(lport);
1599 	struct bnx2fc_hba *hba = interface->hba;
1600 
1601 	/* Stop the transmit retry timer */
1602 	del_timer_sync(&port->timer);
1603 
1604 	/* Free existing transmit skbs */
1605 	fcoe_clean_pending_queue(lport);
1606 
1607 	bnx2fc_net_cleanup(interface);
1608 
1609 	bnx2fc_free_vport(hba, lport);
1610 }
1611 
bnx2fc_if_destroy(struct fc_lport * lport)1612 static void bnx2fc_if_destroy(struct fc_lport *lport)
1613 {
1614 
1615 	/* Free queued packets for the receive thread */
1616 	bnx2fc_clean_rx_queue(lport);
1617 
1618 	/* Detach from scsi-ml */
1619 	fc_remove_host(lport->host);
1620 	scsi_remove_host(lport->host);
1621 
1622 	/*
1623 	 * Note that only the physical lport will have the exchange manager.
1624 	 * for vports, this function is NOP
1625 	 */
1626 	fc_exch_mgr_free(lport);
1627 
1628 	/* Free memory used by statistical counters */
1629 	fc_lport_free_stats(lport);
1630 
1631 	/* Release Scsi_Host */
1632 	scsi_host_put(lport->host);
1633 }
1634 
__bnx2fc_destroy(struct bnx2fc_interface * interface)1635 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1636 {
1637 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1638 	struct fc_lport *lport = ctlr->lp;
1639 	struct fcoe_port *port = lport_priv(lport);
1640 
1641 	bnx2fc_interface_cleanup(interface);
1642 	bnx2fc_stop(interface);
1643 	list_del(&interface->list);
1644 	bnx2fc_port_destroy(port);
1645 	bnx2fc_interface_put(interface);
1646 }
1647 
1648 /**
1649  * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1650  *
1651  * @netdev: The net device that the FCoE interface is on
1652  *
1653  * Called from sysfs.
1654  *
1655  * Returns: 0 for success
1656  */
bnx2fc_destroy(struct net_device * netdev)1657 static int bnx2fc_destroy(struct net_device *netdev)
1658 {
1659 	struct bnx2fc_interface *interface = NULL;
1660 	struct workqueue_struct *timer_work_queue;
1661 	struct fcoe_ctlr *ctlr;
1662 	int rc = 0;
1663 
1664 	rtnl_lock();
1665 	mutex_lock(&bnx2fc_dev_lock);
1666 
1667 	interface = bnx2fc_interface_lookup(netdev);
1668 	ctlr = bnx2fc_to_ctlr(interface);
1669 	if (!interface || !ctlr->lp) {
1670 		rc = -ENODEV;
1671 		printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1672 		goto netdev_err;
1673 	}
1674 
1675 	timer_work_queue = interface->timer_work_queue;
1676 	__bnx2fc_destroy(interface);
1677 	destroy_workqueue(timer_work_queue);
1678 
1679 netdev_err:
1680 	mutex_unlock(&bnx2fc_dev_lock);
1681 	rtnl_unlock();
1682 	return rc;
1683 }
1684 
bnx2fc_port_destroy(struct fcoe_port * port)1685 static void bnx2fc_port_destroy(struct fcoe_port *port)
1686 {
1687 	struct fc_lport *lport;
1688 
1689 	lport = port->lport;
1690 	BNX2FC_HBA_DBG(lport, "Entered %s, destroying lport %p\n", __func__, lport);
1691 
1692 	bnx2fc_if_destroy(lport);
1693 }
1694 
bnx2fc_unbind_adapter_devices(struct bnx2fc_hba * hba)1695 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1696 {
1697 	bnx2fc_free_fw_resc(hba);
1698 	bnx2fc_free_task_ctx(hba);
1699 }
1700 
1701 /**
1702  * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1703  *			pci structure
1704  *
1705  * @hba:		Adapter instance
1706  */
bnx2fc_bind_adapter_devices(struct bnx2fc_hba * hba)1707 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1708 {
1709 	if (bnx2fc_setup_task_ctx(hba))
1710 		goto mem_err;
1711 
1712 	if (bnx2fc_setup_fw_resc(hba))
1713 		goto mem_err;
1714 
1715 	return 0;
1716 mem_err:
1717 	bnx2fc_unbind_adapter_devices(hba);
1718 	return -ENOMEM;
1719 }
1720 
bnx2fc_bind_pcidev(struct bnx2fc_hba * hba)1721 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1722 {
1723 	struct cnic_dev *cnic;
1724 	struct pci_dev *pdev;
1725 
1726 	if (!hba->cnic) {
1727 		printk(KERN_ERR PFX "cnic is NULL\n");
1728 		return -ENODEV;
1729 	}
1730 	cnic = hba->cnic;
1731 	pdev = hba->pcidev = cnic->pcidev;
1732 	if (!hba->pcidev)
1733 		return -ENODEV;
1734 
1735 	switch (pdev->device) {
1736 	case PCI_DEVICE_ID_NX2_57710:
1737 		strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1738 		break;
1739 	case PCI_DEVICE_ID_NX2_57711:
1740 		strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1741 		break;
1742 	case PCI_DEVICE_ID_NX2_57712:
1743 	case PCI_DEVICE_ID_NX2_57712_MF:
1744 	case PCI_DEVICE_ID_NX2_57712_VF:
1745 		strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1746 		break;
1747 	case PCI_DEVICE_ID_NX2_57800:
1748 	case PCI_DEVICE_ID_NX2_57800_MF:
1749 	case PCI_DEVICE_ID_NX2_57800_VF:
1750 		strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1751 		break;
1752 	case PCI_DEVICE_ID_NX2_57810:
1753 	case PCI_DEVICE_ID_NX2_57810_MF:
1754 	case PCI_DEVICE_ID_NX2_57810_VF:
1755 		strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1756 		break;
1757 	case PCI_DEVICE_ID_NX2_57840:
1758 	case PCI_DEVICE_ID_NX2_57840_MF:
1759 	case PCI_DEVICE_ID_NX2_57840_VF:
1760 	case PCI_DEVICE_ID_NX2_57840_2_20:
1761 	case PCI_DEVICE_ID_NX2_57840_4_10:
1762 		strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1763 		break;
1764 	default:
1765 		pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1766 		break;
1767 	}
1768 	pci_dev_get(hba->pcidev);
1769 	return 0;
1770 }
1771 
bnx2fc_unbind_pcidev(struct bnx2fc_hba * hba)1772 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1773 {
1774 	if (hba->pcidev) {
1775 		hba->chip_num[0] = '\0';
1776 		pci_dev_put(hba->pcidev);
1777 	}
1778 	hba->pcidev = NULL;
1779 }
1780 
1781 /**
1782  * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1783  *
1784  * @handle:    transport handle pointing to adapter structure
1785  */
bnx2fc_ulp_get_stats(void * handle)1786 static int bnx2fc_ulp_get_stats(void *handle)
1787 {
1788 	struct bnx2fc_hba *hba = handle;
1789 	struct cnic_dev *cnic;
1790 	struct fcoe_stats_info *stats_addr;
1791 
1792 	if (!hba)
1793 		return -EINVAL;
1794 
1795 	cnic = hba->cnic;
1796 	stats_addr = &cnic->stats_addr->fcoe_stat;
1797 	if (!stats_addr)
1798 		return -EINVAL;
1799 
1800 	strncpy(stats_addr->version, BNX2FC_VERSION,
1801 		sizeof(stats_addr->version));
1802 	stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1803 	stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1804 
1805 	return 0;
1806 }
1807 
1808 
1809 /**
1810  * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1811  *
1812  * @handle:	transport handle pointing to adapter structure
1813  *
1814  * This function maps adapter structure to pcidev structure and initiates
1815  *	firmware handshake to enable/initialize on-chip FCoE components.
1816  *	This bnx2fc - cnic interface api callback is used after following
1817  *	conditions are met -
1818  *	a) underlying network interface is up (marked by event NETDEV_UP
1819  *		from netdev
1820  *	b) bnx2fc adatper structure is registered.
1821  */
bnx2fc_ulp_start(void * handle)1822 static void bnx2fc_ulp_start(void *handle)
1823 {
1824 	struct bnx2fc_hba *hba = handle;
1825 	struct bnx2fc_interface *interface;
1826 	struct fcoe_ctlr *ctlr;
1827 	struct fc_lport *lport;
1828 
1829 	mutex_lock(&bnx2fc_dev_lock);
1830 
1831 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1832 		bnx2fc_fw_init(hba);
1833 
1834 	BNX2FC_MISC_DBG("bnx2fc started.\n");
1835 
1836 	list_for_each_entry(interface, &if_list, list) {
1837 		if (interface->hba == hba) {
1838 			ctlr = bnx2fc_to_ctlr(interface);
1839 			lport = ctlr->lp;
1840 			/* Kick off Fabric discovery*/
1841 			printk(KERN_ERR PFX "ulp_init: start discovery\n");
1842 			lport->tt.frame_send = bnx2fc_xmit;
1843 			bnx2fc_start_disc(interface);
1844 		}
1845 	}
1846 
1847 	mutex_unlock(&bnx2fc_dev_lock);
1848 }
1849 
bnx2fc_port_shutdown(struct fc_lport * lport)1850 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1851 {
1852 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
1853 	fc_fabric_logoff(lport);
1854 	fc_lport_destroy(lport);
1855 }
1856 
bnx2fc_stop(struct bnx2fc_interface * interface)1857 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1858 {
1859 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1860 	struct fc_lport *lport;
1861 	struct fc_lport *vport;
1862 
1863 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1864 		return;
1865 
1866 	lport = ctlr->lp;
1867 	bnx2fc_port_shutdown(lport);
1868 
1869 	mutex_lock(&lport->lp_mutex);
1870 	list_for_each_entry(vport, &lport->vports, list)
1871 		fc_host_port_type(vport->host) =
1872 					FC_PORTTYPE_UNKNOWN;
1873 	mutex_unlock(&lport->lp_mutex);
1874 	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1875 	fcoe_ctlr_link_down(ctlr);
1876 	fcoe_clean_pending_queue(lport);
1877 }
1878 
bnx2fc_fw_init(struct bnx2fc_hba * hba)1879 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1880 {
1881 #define BNX2FC_INIT_POLL_TIME		(1000 / HZ)
1882 	int rc = -1;
1883 	int i = HZ;
1884 
1885 	rc = bnx2fc_bind_adapter_devices(hba);
1886 	if (rc) {
1887 		printk(KERN_ALERT PFX
1888 			"bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1889 		goto err_out;
1890 	}
1891 
1892 	rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1893 	if (rc) {
1894 		printk(KERN_ALERT PFX
1895 			"bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1896 		goto err_unbind;
1897 	}
1898 
1899 	/*
1900 	 * Wait until the adapter init message is complete, and adapter
1901 	 * state is UP.
1902 	 */
1903 	while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1904 		msleep(BNX2FC_INIT_POLL_TIME);
1905 
1906 	if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1907 		printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1908 				"Ignoring...\n",
1909 				hba->cnic->netdev->name);
1910 		rc = -1;
1911 		goto err_unbind;
1912 	}
1913 
1914 
1915 	set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1916 	return 0;
1917 
1918 err_unbind:
1919 	bnx2fc_unbind_adapter_devices(hba);
1920 err_out:
1921 	return rc;
1922 }
1923 
bnx2fc_fw_destroy(struct bnx2fc_hba * hba)1924 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1925 {
1926 	if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1927 		if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1928 			timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer,
1929 				    0);
1930 			hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1931 								jiffies;
1932 			add_timer(&hba->destroy_timer);
1933 			wait_event_interruptible(hba->destroy_wait,
1934 					test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1935 						 &hba->flags));
1936 			clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1937 			/* This should never happen */
1938 			if (signal_pending(current))
1939 				flush_signals(current);
1940 
1941 			del_timer_sync(&hba->destroy_timer);
1942 		}
1943 		bnx2fc_unbind_adapter_devices(hba);
1944 	}
1945 }
1946 
1947 /**
1948  * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1949  *
1950  * @handle:	transport handle pointing to adapter structure
1951  *
1952  * Driver checks if adapter is already in shutdown mode, if not start
1953  *	the shutdown process.
1954  */
bnx2fc_ulp_stop(void * handle)1955 static void bnx2fc_ulp_stop(void *handle)
1956 {
1957 	struct bnx2fc_hba *hba = handle;
1958 	struct bnx2fc_interface *interface;
1959 
1960 	printk(KERN_ERR "ULP_STOP\n");
1961 
1962 	mutex_lock(&bnx2fc_dev_lock);
1963 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1964 		goto exit;
1965 	list_for_each_entry(interface, &if_list, list) {
1966 		if (interface->hba == hba)
1967 			bnx2fc_stop(interface);
1968 	}
1969 	BUG_ON(hba->num_ofld_sess != 0);
1970 
1971 	mutex_lock(&hba->hba_mutex);
1972 	clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1973 	clear_bit(ADAPTER_STATE_GOING_DOWN,
1974 		  &hba->adapter_state);
1975 
1976 	clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1977 	mutex_unlock(&hba->hba_mutex);
1978 
1979 	bnx2fc_fw_destroy(hba);
1980 exit:
1981 	mutex_unlock(&bnx2fc_dev_lock);
1982 }
1983 
bnx2fc_start_disc(struct bnx2fc_interface * interface)1984 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1985 {
1986 	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1987 	struct fc_lport *lport;
1988 	int wait_cnt = 0;
1989 
1990 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
1991 	/* Kick off FIP/FLOGI */
1992 	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1993 		printk(KERN_ERR PFX "Init not done yet\n");
1994 		return;
1995 	}
1996 
1997 	lport = ctlr->lp;
1998 	BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1999 
2000 	if (!bnx2fc_link_ok(lport) && interface->enabled) {
2001 		BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
2002 		fcoe_ctlr_link_up(ctlr);
2003 		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2004 		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2005 	}
2006 
2007 	/* wait for the FCF to be selected before issuing FLOGI */
2008 	while (!ctlr->sel_fcf) {
2009 		msleep(250);
2010 		/* give up after 3 secs */
2011 		if (++wait_cnt > 12)
2012 			break;
2013 	}
2014 
2015 	/* Reset max receive frame size to default */
2016 	if (fc_set_mfs(lport, BNX2FC_MFS))
2017 		return;
2018 
2019 	fc_lport_init(lport);
2020 	fc_fabric_login(lport);
2021 }
2022 
2023 
2024 /**
2025  * bnx2fc_ulp_init - Initialize an adapter instance
2026  *
2027  * @dev :	cnic device handle
2028  * Called from cnic_register_driver() context to initialize all
2029  *	enumerated cnic devices. This routine allocates adapter structure
2030  *	and other device specific resources.
2031  */
bnx2fc_ulp_init(struct cnic_dev * dev)2032 static void bnx2fc_ulp_init(struct cnic_dev *dev)
2033 {
2034 	struct bnx2fc_hba *hba;
2035 	int rc = 0;
2036 
2037 	BNX2FC_MISC_DBG("Entered %s\n", __func__);
2038 	/* bnx2fc works only when bnx2x is loaded */
2039 	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
2040 	    (dev->max_fcoe_conn == 0)) {
2041 		printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
2042 				    " flags: %lx fcoe_conn: %d\n",
2043 			dev->netdev->name, dev->flags, dev->max_fcoe_conn);
2044 		return;
2045 	}
2046 
2047 	hba = bnx2fc_hba_create(dev);
2048 	if (!hba) {
2049 		printk(KERN_ERR PFX "hba initialization failed\n");
2050 		return;
2051 	}
2052 
2053 	pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
2054 
2055 	/* Add HBA to the adapter list */
2056 	mutex_lock(&bnx2fc_dev_lock);
2057 	list_add_tail(&hba->list, &adapter_list);
2058 	adapter_count++;
2059 	mutex_unlock(&bnx2fc_dev_lock);
2060 
2061 	dev->fcoe_cap = &hba->fcoe_cap;
2062 	clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2063 	rc = dev->register_device(dev, CNIC_ULP_FCOE,
2064 						(void *) hba);
2065 	if (rc)
2066 		printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2067 	else
2068 		set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2069 }
2070 
2071 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
__bnx2fc_disable(struct fcoe_ctlr * ctlr)2072 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2073 {
2074 	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2075 
2076 	if (interface->enabled) {
2077 		if (!ctlr->lp) {
2078 			pr_err(PFX "__bnx2fc_disable: lport not found\n");
2079 			return -ENODEV;
2080 		} else {
2081 			interface->enabled = false;
2082 			fcoe_ctlr_link_down(ctlr);
2083 			fcoe_clean_pending_queue(ctlr->lp);
2084 		}
2085 	}
2086 	return 0;
2087 }
2088 
2089 /*
2090  * Deperecated: Use bnx2fc_enabled()
2091  */
bnx2fc_disable(struct net_device * netdev)2092 static int bnx2fc_disable(struct net_device *netdev)
2093 {
2094 	struct bnx2fc_interface *interface;
2095 	struct fcoe_ctlr *ctlr;
2096 	int rc = 0;
2097 
2098 	rtnl_lock();
2099 	mutex_lock(&bnx2fc_dev_lock);
2100 
2101 	interface = bnx2fc_interface_lookup(netdev);
2102 	ctlr = bnx2fc_to_ctlr(interface);
2103 
2104 	if (!interface) {
2105 		rc = -ENODEV;
2106 		pr_err(PFX "bnx2fc_disable: interface not found\n");
2107 	} else {
2108 		rc = __bnx2fc_disable(ctlr);
2109 	}
2110 	mutex_unlock(&bnx2fc_dev_lock);
2111 	rtnl_unlock();
2112 	return rc;
2113 }
2114 
bnx2fc_npiv_create_vports(struct fc_lport * lport,struct cnic_fc_npiv_tbl * npiv_tbl)2115 static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2116 				      struct cnic_fc_npiv_tbl *npiv_tbl)
2117 {
2118 	struct fc_vport_identifiers vpid;
2119 	uint i, created = 0;
2120 	u64 wwnn = 0;
2121 	char wwpn_str[32];
2122 	char wwnn_str[32];
2123 
2124 	if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2125 		BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2126 		goto done;
2127 	}
2128 
2129 	/* Sanity check the first entry to make sure it's not 0 */
2130 	if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2131 	    wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2132 		BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2133 		goto done;
2134 	}
2135 
2136 	vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2137 	vpid.vport_type = FC_PORTTYPE_NPIV;
2138 	vpid.disable = false;
2139 
2140 	for (i = 0; i < npiv_tbl->count; i++) {
2141 		wwnn = wwn_to_u64(npiv_tbl->wwnn[i]);
2142 		if (wwnn == 0) {
2143 			/*
2144 			 * If we get a 0 element from for the WWNN then assume
2145 			 * the WWNN should be the same as the physical port.
2146 			 */
2147 			wwnn = lport->wwnn;
2148 		}
2149 		vpid.node_name = wwnn;
2150 		vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2151 		scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2152 		    "NPIV[%u]:%016llx-%016llx",
2153 		    created, vpid.port_name, vpid.node_name);
2154 		fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str));
2155 		fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str));
2156 		BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str,
2157 		    wwpn_str);
2158 		if (fc_vport_create(lport->host, 0, &vpid))
2159 			created++;
2160 		else
2161 			BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2162 	}
2163 done:
2164 	return created;
2165 }
2166 
__bnx2fc_enable(struct fcoe_ctlr * ctlr)2167 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2168 {
2169 	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2170 	struct bnx2fc_hba *hba;
2171 	struct cnic_fc_npiv_tbl *npiv_tbl;
2172 	struct fc_lport *lport;
2173 
2174 	if (!interface->enabled) {
2175 		if (!ctlr->lp) {
2176 			pr_err(PFX "__bnx2fc_enable: lport not found\n");
2177 			return -ENODEV;
2178 		} else if (!bnx2fc_link_ok(ctlr->lp)) {
2179 			fcoe_ctlr_link_up(ctlr);
2180 			interface->enabled = true;
2181 		}
2182 	}
2183 
2184 	/* Create static NPIV ports if any are contained in NVRAM */
2185 	hba = interface->hba;
2186 	lport = ctlr->lp;
2187 
2188 	if (!hba)
2189 		goto done;
2190 
2191 	if (!hba->cnic)
2192 		goto done;
2193 
2194 	if (!lport)
2195 		goto done;
2196 
2197 	if (!lport->host)
2198 		goto done;
2199 
2200 	if (!hba->cnic->get_fc_npiv_tbl)
2201 		goto done;
2202 
2203 	npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2204 	if (!npiv_tbl)
2205 		goto done;
2206 
2207 	if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2208 		goto done_free;
2209 
2210 	bnx2fc_npiv_create_vports(lport, npiv_tbl);
2211 done_free:
2212 	kfree(npiv_tbl);
2213 done:
2214 	return 0;
2215 }
2216 
2217 /*
2218  * Deprecated: Use bnx2fc_enabled()
2219  */
bnx2fc_enable(struct net_device * netdev)2220 static int bnx2fc_enable(struct net_device *netdev)
2221 {
2222 	struct bnx2fc_interface *interface;
2223 	struct fcoe_ctlr *ctlr;
2224 	int rc = 0;
2225 
2226 	rtnl_lock();
2227 	mutex_lock(&bnx2fc_dev_lock);
2228 
2229 	interface = bnx2fc_interface_lookup(netdev);
2230 	ctlr = bnx2fc_to_ctlr(interface);
2231 	if (!interface) {
2232 		rc = -ENODEV;
2233 		pr_err(PFX "bnx2fc_enable: interface not found\n");
2234 	} else {
2235 		rc = __bnx2fc_enable(ctlr);
2236 	}
2237 
2238 	mutex_unlock(&bnx2fc_dev_lock);
2239 	rtnl_unlock();
2240 	return rc;
2241 }
2242 
2243 /**
2244  * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2245  * @cdev: The FCoE Controller that is being enabled or disabled
2246  *
2247  * fcoe_sysfs will ensure that the state of 'enabled' has
2248  * changed, so no checking is necessary here. This routine simply
2249  * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2250  * When those routines are removed the functionality can be merged
2251  * here.
2252  */
bnx2fc_ctlr_enabled(struct fcoe_ctlr_device * cdev)2253 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2254 {
2255 	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2256 
2257 	switch (cdev->enabled) {
2258 	case FCOE_CTLR_ENABLED:
2259 		return __bnx2fc_enable(ctlr);
2260 	case FCOE_CTLR_DISABLED:
2261 		return __bnx2fc_disable(ctlr);
2262 	case FCOE_CTLR_UNUSED:
2263 	default:
2264 		return -ENOTSUPP;
2265 	}
2266 }
2267 
2268 enum bnx2fc_create_link_state {
2269 	BNX2FC_CREATE_LINK_DOWN,
2270 	BNX2FC_CREATE_LINK_UP,
2271 };
2272 
2273 /**
2274  * _bnx2fc_create() - Create bnx2fc FCoE interface
2275  * @netdev  :   The net_device object the Ethernet interface to create on
2276  * @fip_mode:   The FIP mode for this creation
2277  * @link_state: The ctlr link state on creation
2278  *
2279  * Called from either the libfcoe 'create' module parameter
2280  * via fcoe_create or from fcoe_syfs's ctlr_create file.
2281  *
2282  * libfcoe's 'create' module parameter is deprecated so some
2283  * consolidation of code can be done when that interface is
2284  * removed.
2285  *
2286  * Returns: 0 for success
2287  */
_bnx2fc_create(struct net_device * netdev,enum fip_mode fip_mode,enum bnx2fc_create_link_state link_state)2288 static int _bnx2fc_create(struct net_device *netdev,
2289 			  enum fip_mode fip_mode,
2290 			  enum bnx2fc_create_link_state link_state)
2291 {
2292 	struct fcoe_ctlr_device *cdev;
2293 	struct fcoe_ctlr *ctlr;
2294 	struct bnx2fc_interface *interface;
2295 	struct bnx2fc_hba *hba;
2296 	struct net_device *phys_dev = netdev;
2297 	struct fc_lport *lport;
2298 	struct ethtool_drvinfo drvinfo;
2299 	int rc = 0;
2300 	int vlan_id = 0;
2301 
2302 	BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2303 	if (fip_mode != FIP_MODE_FABRIC) {
2304 		printk(KERN_ERR "fip mode not FABRIC\n");
2305 		return -EIO;
2306 	}
2307 
2308 	rtnl_lock();
2309 
2310 	mutex_lock(&bnx2fc_dev_lock);
2311 
2312 	if (!try_module_get(THIS_MODULE)) {
2313 		rc = -EINVAL;
2314 		goto mod_err;
2315 	}
2316 
2317 	/* obtain physical netdev */
2318 	if (is_vlan_dev(netdev))
2319 		phys_dev = vlan_dev_real_dev(netdev);
2320 
2321 	/* verify if the physical device is a netxtreme2 device */
2322 	if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2323 		memset(&drvinfo, 0, sizeof(drvinfo));
2324 		phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2325 		if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2326 			printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2327 			rc = -EINVAL;
2328 			goto netdev_err;
2329 		}
2330 	} else {
2331 		printk(KERN_ERR PFX "unable to obtain drv_info\n");
2332 		rc = -EINVAL;
2333 		goto netdev_err;
2334 	}
2335 
2336 	/* obtain interface and initialize rest of the structure */
2337 	hba = bnx2fc_hba_lookup(phys_dev);
2338 	if (!hba) {
2339 		rc = -ENODEV;
2340 		printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2341 		goto netdev_err;
2342 	}
2343 
2344 	if (bnx2fc_interface_lookup(netdev)) {
2345 		rc = -EEXIST;
2346 		goto netdev_err;
2347 	}
2348 
2349 	interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2350 	if (!interface) {
2351 		printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2352 		rc = -ENOMEM;
2353 		goto netdev_err;
2354 	}
2355 
2356 	if (is_vlan_dev(netdev)) {
2357 		vlan_id = vlan_dev_vlan_id(netdev);
2358 		interface->vlan_enabled = 1;
2359 	}
2360 
2361 	ctlr = bnx2fc_to_ctlr(interface);
2362 	cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2363 	interface->vlan_id = vlan_id;
2364 	interface->tm_timeout = BNX2FC_TM_TIMEOUT;
2365 
2366 	interface->timer_work_queue =
2367 			create_singlethread_workqueue("bnx2fc_timer_wq");
2368 	if (!interface->timer_work_queue) {
2369 		printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2370 		rc = -EINVAL;
2371 		goto ifput_err;
2372 	}
2373 
2374 	lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2375 	if (!lport) {
2376 		printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2377 			netdev->name);
2378 		rc = -EINVAL;
2379 		goto if_create_err;
2380 	}
2381 
2382 	/* Add interface to if_list */
2383 	list_add_tail(&interface->list, &if_list);
2384 
2385 	lport->boot_time = jiffies;
2386 
2387 	/* Make this master N_port */
2388 	ctlr->lp = lport;
2389 
2390 	if (link_state == BNX2FC_CREATE_LINK_UP)
2391 		cdev->enabled = FCOE_CTLR_ENABLED;
2392 	else
2393 		cdev->enabled = FCOE_CTLR_DISABLED;
2394 
2395 	if (link_state == BNX2FC_CREATE_LINK_UP &&
2396 	    !bnx2fc_link_ok(lport)) {
2397 		fcoe_ctlr_link_up(ctlr);
2398 		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2399 		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2400 	}
2401 
2402 	BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2403 	bnx2fc_start_disc(interface);
2404 
2405 	if (link_state == BNX2FC_CREATE_LINK_UP)
2406 		interface->enabled = true;
2407 
2408 	/*
2409 	 * Release from kref_init in bnx2fc_interface_setup, on success
2410 	 * lport should be holding a reference taken in bnx2fc_if_create
2411 	 */
2412 	bnx2fc_interface_put(interface);
2413 	/* put netdev that was held while calling dev_get_by_name */
2414 	mutex_unlock(&bnx2fc_dev_lock);
2415 	rtnl_unlock();
2416 	return 0;
2417 
2418 if_create_err:
2419 	destroy_workqueue(interface->timer_work_queue);
2420 ifput_err:
2421 	bnx2fc_net_cleanup(interface);
2422 	bnx2fc_interface_put(interface);
2423 	goto mod_err;
2424 netdev_err:
2425 	module_put(THIS_MODULE);
2426 mod_err:
2427 	mutex_unlock(&bnx2fc_dev_lock);
2428 	rtnl_unlock();
2429 	return rc;
2430 }
2431 
2432 /**
2433  * bnx2fc_create() - Create a bnx2fc interface
2434  * @netdev  : The net_device object the Ethernet interface to create on
2435  * @fip_mode: The FIP mode for this creation
2436  *
2437  * Called from fcoe transport
2438  *
2439  * Returns: 0 for success
2440  */
bnx2fc_create(struct net_device * netdev,enum fip_mode fip_mode)2441 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode)
2442 {
2443 	return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2444 }
2445 
2446 /**
2447  * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2448  * @netdev: The net_device to be used by the allocated FCoE Controller
2449  *
2450  * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2451  * in a link_down state. The allows the user an opportunity to configure
2452  * the FCoE Controller from sysfs before enabling the FCoE Controller.
2453  *
2454  * Creating in with this routine starts the FCoE Controller in Fabric
2455  * mode. The user can change to VN2VN or another mode before enabling.
2456  */
bnx2fc_ctlr_alloc(struct net_device * netdev)2457 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2458 {
2459 	return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2460 			      BNX2FC_CREATE_LINK_DOWN);
2461 }
2462 
2463 /**
2464  * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2465  *
2466  * @cnic:	Pointer to cnic device instance
2467  *
2468  **/
bnx2fc_find_hba_for_cnic(struct cnic_dev * cnic)2469 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2470 {
2471 	struct bnx2fc_hba *hba;
2472 
2473 	/* Called with bnx2fc_dev_lock held */
2474 	list_for_each_entry(hba, &adapter_list, list) {
2475 		if (hba->cnic == cnic)
2476 			return hba;
2477 	}
2478 	return NULL;
2479 }
2480 
bnx2fc_interface_lookup(struct net_device * netdev)2481 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2482 							*netdev)
2483 {
2484 	struct bnx2fc_interface *interface;
2485 
2486 	/* Called with bnx2fc_dev_lock held */
2487 	list_for_each_entry(interface, &if_list, list) {
2488 		if (interface->netdev == netdev)
2489 			return interface;
2490 	}
2491 	return NULL;
2492 }
2493 
bnx2fc_hba_lookup(struct net_device * phys_dev)2494 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2495 						      *phys_dev)
2496 {
2497 	struct bnx2fc_hba *hba;
2498 
2499 	/* Called with bnx2fc_dev_lock held */
2500 	list_for_each_entry(hba, &adapter_list, list) {
2501 		if (hba->phys_dev == phys_dev)
2502 			return hba;
2503 	}
2504 	printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2505 	return NULL;
2506 }
2507 
2508 /**
2509  * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2510  *
2511  * @dev:	cnic device handle
2512  */
bnx2fc_ulp_exit(struct cnic_dev * dev)2513 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2514 {
2515 	struct bnx2fc_hba *hba;
2516 	struct bnx2fc_interface *interface, *tmp;
2517 
2518 	BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2519 
2520 	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2521 		printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2522 			dev->netdev->name, dev->flags);
2523 		return;
2524 	}
2525 
2526 	mutex_lock(&bnx2fc_dev_lock);
2527 	hba = bnx2fc_find_hba_for_cnic(dev);
2528 	if (!hba) {
2529 		printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2530 		       dev);
2531 		mutex_unlock(&bnx2fc_dev_lock);
2532 		return;
2533 	}
2534 
2535 	list_del_init(&hba->list);
2536 	adapter_count--;
2537 
2538 	list_for_each_entry_safe(interface, tmp, &if_list, list)
2539 		/* destroy not called yet, move to quiesced list */
2540 		if (interface->hba == hba)
2541 			__bnx2fc_destroy(interface);
2542 	mutex_unlock(&bnx2fc_dev_lock);
2543 
2544 	bnx2fc_ulp_stop(hba);
2545 	/* unregister cnic device */
2546 	if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2547 		hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2548 	bnx2fc_hba_destroy(hba);
2549 }
2550 
bnx2fc_rport_terminate_io(struct fc_rport * rport)2551 static void bnx2fc_rport_terminate_io(struct fc_rport *rport)
2552 {
2553 	/* This is a no-op */
2554 }
2555 
2556 /**
2557  * bnx2fc_fcoe_reset - Resets the fcoe
2558  *
2559  * @shost: shost the reset is from
2560  *
2561  * Returns: always 0
2562  */
bnx2fc_fcoe_reset(struct Scsi_Host * shost)2563 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2564 {
2565 	struct fc_lport *lport = shost_priv(shost);
2566 	fc_lport_reset(lport);
2567 	return 0;
2568 }
2569 
2570 
bnx2fc_match(struct net_device * netdev)2571 static bool bnx2fc_match(struct net_device *netdev)
2572 {
2573 	struct net_device *phys_dev = netdev;
2574 
2575 	mutex_lock(&bnx2fc_dev_lock);
2576 	if (is_vlan_dev(netdev))
2577 		phys_dev = vlan_dev_real_dev(netdev);
2578 
2579 	if (bnx2fc_hba_lookup(phys_dev)) {
2580 		mutex_unlock(&bnx2fc_dev_lock);
2581 		return true;
2582 	}
2583 
2584 	mutex_unlock(&bnx2fc_dev_lock);
2585 	return false;
2586 }
2587 
2588 
2589 static struct fcoe_transport bnx2fc_transport = {
2590 	.name = {"bnx2fc"},
2591 	.attached = false,
2592 	.list = LIST_HEAD_INIT(bnx2fc_transport.list),
2593 	.alloc = bnx2fc_ctlr_alloc,
2594 	.match = bnx2fc_match,
2595 	.create = bnx2fc_create,
2596 	.destroy = bnx2fc_destroy,
2597 	.enable = bnx2fc_enable,
2598 	.disable = bnx2fc_disable,
2599 };
2600 
2601 /**
2602  * bnx2fc_cpu_online - Create a receive thread for an  online CPU
2603  *
2604  * @cpu: cpu index for the online cpu
2605  */
bnx2fc_cpu_online(unsigned int cpu)2606 static int bnx2fc_cpu_online(unsigned int cpu)
2607 {
2608 	struct bnx2fc_percpu_s *p;
2609 	struct task_struct *thread;
2610 
2611 	p = &per_cpu(bnx2fc_percpu, cpu);
2612 
2613 	thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2614 					(void *)p, cpu_to_node(cpu),
2615 					"bnx2fc_thread/%d", cpu);
2616 	if (IS_ERR(thread))
2617 		return PTR_ERR(thread);
2618 
2619 	/* bind thread to the cpu */
2620 	kthread_bind(thread, cpu);
2621 	p->iothread = thread;
2622 	wake_up_process(thread);
2623 	return 0;
2624 }
2625 
bnx2fc_cpu_offline(unsigned int cpu)2626 static int bnx2fc_cpu_offline(unsigned int cpu)
2627 {
2628 	struct bnx2fc_percpu_s *p;
2629 	struct task_struct *thread;
2630 	struct bnx2fc_work *work, *tmp;
2631 
2632 	BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2633 
2634 	/* Prevent any new work from being queued for this CPU */
2635 	p = &per_cpu(bnx2fc_percpu, cpu);
2636 	spin_lock_bh(&p->fp_work_lock);
2637 	thread = p->iothread;
2638 	p->iothread = NULL;
2639 
2640 	/* Free all work in the list */
2641 	list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2642 		list_del_init(&work->list);
2643 		bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data,
2644 					work->num_rq, work->task);
2645 		kfree(work);
2646 	}
2647 
2648 	spin_unlock_bh(&p->fp_work_lock);
2649 
2650 	if (thread)
2651 		kthread_stop(thread);
2652 	return 0;
2653 }
2654 
bnx2fc_slave_configure(struct scsi_device * sdev)2655 static int bnx2fc_slave_configure(struct scsi_device *sdev)
2656 {
2657 	if (!bnx2fc_queue_depth)
2658 		return 0;
2659 
2660 	scsi_change_queue_depth(sdev, bnx2fc_queue_depth);
2661 	return 0;
2662 }
2663 
2664 static enum cpuhp_state bnx2fc_online_state;
2665 
2666 /**
2667  * bnx2fc_mod_init - module init entry point
2668  *
2669  * Initialize driver wide global data structures, and register
2670  * with cnic module
2671  **/
bnx2fc_mod_init(void)2672 static int __init bnx2fc_mod_init(void)
2673 {
2674 	struct fcoe_percpu_s *bg;
2675 	struct task_struct *l2_thread;
2676 	int rc = 0;
2677 	unsigned int cpu = 0;
2678 	struct bnx2fc_percpu_s *p;
2679 
2680 	printk(KERN_INFO PFX "%s", version);
2681 
2682 	/* register as a fcoe transport */
2683 	rc = fcoe_transport_attach(&bnx2fc_transport);
2684 	if (rc) {
2685 		printk(KERN_ERR "failed to register an fcoe transport, check "
2686 			"if libfcoe is loaded\n");
2687 		goto out;
2688 	}
2689 
2690 	INIT_LIST_HEAD(&adapter_list);
2691 	INIT_LIST_HEAD(&if_list);
2692 	mutex_init(&bnx2fc_dev_lock);
2693 	adapter_count = 0;
2694 
2695 	/* Attach FC transport template */
2696 	rc = bnx2fc_attach_transport();
2697 	if (rc)
2698 		goto detach_ft;
2699 
2700 	bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2701 	if (!bnx2fc_wq) {
2702 		rc = -ENOMEM;
2703 		goto release_bt;
2704 	}
2705 
2706 	bg = &bnx2fc_global;
2707 	skb_queue_head_init(&bg->fcoe_rx_list);
2708 	l2_thread = kthread_run(bnx2fc_l2_rcv_thread,
2709 				(void *)bg,
2710 				"bnx2fc_l2_thread");
2711 	if (IS_ERR(l2_thread)) {
2712 		rc = PTR_ERR(l2_thread);
2713 		goto free_wq;
2714 	}
2715 	spin_lock_bh(&bg->fcoe_rx_list.lock);
2716 	bg->kthread = l2_thread;
2717 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2718 
2719 	for_each_possible_cpu(cpu) {
2720 		p = &per_cpu(bnx2fc_percpu, cpu);
2721 		INIT_LIST_HEAD(&p->work_list);
2722 		spin_lock_init(&p->fp_work_lock);
2723 	}
2724 
2725 	rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online",
2726 			       bnx2fc_cpu_online, bnx2fc_cpu_offline);
2727 	if (rc < 0)
2728 		goto stop_thread;
2729 	bnx2fc_online_state = rc;
2730 
2731 	cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2732 	return 0;
2733 
2734 stop_thread:
2735 	kthread_stop(l2_thread);
2736 free_wq:
2737 	destroy_workqueue(bnx2fc_wq);
2738 release_bt:
2739 	bnx2fc_release_transport();
2740 detach_ft:
2741 	fcoe_transport_detach(&bnx2fc_transport);
2742 out:
2743 	return rc;
2744 }
2745 
bnx2fc_mod_exit(void)2746 static void __exit bnx2fc_mod_exit(void)
2747 {
2748 	LIST_HEAD(to_be_deleted);
2749 	struct bnx2fc_hba *hba, *next;
2750 	struct fcoe_percpu_s *bg;
2751 	struct task_struct *l2_thread;
2752 	struct sk_buff *skb;
2753 
2754 	/*
2755 	 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2756 	 * it will have higher precedence than bnx2fc_dev_lock.
2757 	 * unregister_device() cannot be called with bnx2fc_dev_lock
2758 	 * held.
2759 	 */
2760 	mutex_lock(&bnx2fc_dev_lock);
2761 	list_splice_init(&adapter_list, &to_be_deleted);
2762 	adapter_count = 0;
2763 	mutex_unlock(&bnx2fc_dev_lock);
2764 
2765 	/* Unregister with cnic */
2766 	list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2767 		list_del_init(&hba->list);
2768 		printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2769 		       hba);
2770 		bnx2fc_ulp_stop(hba);
2771 		/* unregister cnic device */
2772 		if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2773 				       &hba->reg_with_cnic))
2774 			hba->cnic->unregister_device(hba->cnic,
2775 							 CNIC_ULP_FCOE);
2776 		bnx2fc_hba_destroy(hba);
2777 	}
2778 	cnic_unregister_driver(CNIC_ULP_FCOE);
2779 
2780 	/* Destroy global thread */
2781 	bg = &bnx2fc_global;
2782 	spin_lock_bh(&bg->fcoe_rx_list.lock);
2783 	l2_thread = bg->kthread;
2784 	bg->kthread = NULL;
2785 	while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2786 		kfree_skb(skb);
2787 
2788 	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2789 
2790 	if (l2_thread)
2791 		kthread_stop(l2_thread);
2792 
2793 	cpuhp_remove_state(bnx2fc_online_state);
2794 
2795 	destroy_workqueue(bnx2fc_wq);
2796 	/*
2797 	 * detach from scsi transport
2798 	 * must happen after all destroys are done
2799 	 */
2800 	bnx2fc_release_transport();
2801 
2802 	/* detach from fcoe transport */
2803 	fcoe_transport_detach(&bnx2fc_transport);
2804 }
2805 
2806 module_init(bnx2fc_mod_init);
2807 module_exit(bnx2fc_mod_exit);
2808 
2809 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2810 	.set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2811 	.get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2812 	.get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2813 	.get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2814 	.get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2815 	.get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2816 	.get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2817 
2818 	.get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2819 	.get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2820 };
2821 
2822 static struct fc_function_template bnx2fc_transport_function = {
2823 	.show_host_node_name = 1,
2824 	.show_host_port_name = 1,
2825 	.show_host_supported_classes = 1,
2826 	.show_host_supported_fc4s = 1,
2827 	.show_host_active_fc4s = 1,
2828 	.show_host_maxframe_size = 1,
2829 
2830 	.show_host_port_id = 1,
2831 	.show_host_supported_speeds = 1,
2832 	.get_host_speed = fc_get_host_speed,
2833 	.show_host_speed = 1,
2834 	.show_host_port_type = 1,
2835 	.get_host_port_state = fc_get_host_port_state,
2836 	.show_host_port_state = 1,
2837 	.show_host_symbolic_name = 1,
2838 
2839 	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2840 				sizeof(struct bnx2fc_rport)),
2841 	.show_rport_maxframe_size = 1,
2842 	.show_rport_supported_classes = 1,
2843 
2844 	.show_host_fabric_name = 1,
2845 	.show_starget_node_name = 1,
2846 	.show_starget_port_name = 1,
2847 	.show_starget_port_id = 1,
2848 	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2849 	.show_rport_dev_loss_tmo = 1,
2850 	.get_fc_host_stats = bnx2fc_get_host_stats,
2851 
2852 	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2853 
2854 	.terminate_rport_io = bnx2fc_rport_terminate_io,
2855 
2856 	.vport_create = bnx2fc_vport_create,
2857 	.vport_delete = bnx2fc_vport_destroy,
2858 	.vport_disable = bnx2fc_vport_disable,
2859 	.bsg_request = fc_lport_bsg_request,
2860 };
2861 
2862 static struct fc_function_template bnx2fc_vport_xport_function = {
2863 	.show_host_node_name = 1,
2864 	.show_host_port_name = 1,
2865 	.show_host_supported_classes = 1,
2866 	.show_host_supported_fc4s = 1,
2867 	.show_host_active_fc4s = 1,
2868 	.show_host_maxframe_size = 1,
2869 
2870 	.show_host_port_id = 1,
2871 	.show_host_supported_speeds = 1,
2872 	.get_host_speed = fc_get_host_speed,
2873 	.show_host_speed = 1,
2874 	.show_host_port_type = 1,
2875 	.get_host_port_state = fc_get_host_port_state,
2876 	.show_host_port_state = 1,
2877 	.show_host_symbolic_name = 1,
2878 
2879 	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2880 				sizeof(struct bnx2fc_rport)),
2881 	.show_rport_maxframe_size = 1,
2882 	.show_rport_supported_classes = 1,
2883 
2884 	.show_host_fabric_name = 1,
2885 	.show_starget_node_name = 1,
2886 	.show_starget_port_name = 1,
2887 	.show_starget_port_id = 1,
2888 	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2889 	.show_rport_dev_loss_tmo = 1,
2890 	.get_fc_host_stats = fc_get_host_stats,
2891 	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2892 	.terminate_rport_io = fc_rport_terminate_io,
2893 	.bsg_request = fc_lport_bsg_request,
2894 };
2895 
2896 /*
2897  * Additional scsi_host attributes.
2898  */
2899 static ssize_t
bnx2fc_tm_timeout_show(struct device * dev,struct device_attribute * attr,char * buf)2900 bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
2901 	char *buf)
2902 {
2903 	struct Scsi_Host *shost = class_to_shost(dev);
2904 	struct fc_lport *lport = shost_priv(shost);
2905 	struct fcoe_port *port = lport_priv(lport);
2906 	struct bnx2fc_interface *interface = port->priv;
2907 
2908 	sprintf(buf, "%u\n", interface->tm_timeout);
2909 	return strlen(buf);
2910 }
2911 
2912 static ssize_t
bnx2fc_tm_timeout_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2913 bnx2fc_tm_timeout_store(struct device *dev,
2914 	struct device_attribute *attr, const char *buf, size_t count)
2915 {
2916 	struct Scsi_Host *shost = class_to_shost(dev);
2917 	struct fc_lport *lport = shost_priv(shost);
2918 	struct fcoe_port *port = lport_priv(lport);
2919 	struct bnx2fc_interface *interface = port->priv;
2920 	int rval, val;
2921 
2922 	rval = kstrtouint(buf, 10, &val);
2923 	if (rval)
2924 		return rval;
2925 	if (val > 255)
2926 		return -ERANGE;
2927 
2928 	interface->tm_timeout = (u8)val;
2929 	return strlen(buf);
2930 }
2931 
2932 static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
2933 	bnx2fc_tm_timeout_store);
2934 
2935 static struct attribute *bnx2fc_host_attrs[] = {
2936 	&dev_attr_tm_timeout.attr,
2937 	NULL,
2938 };
2939 
2940 ATTRIBUTE_GROUPS(bnx2fc_host);
2941 
2942 /*
2943  * scsi_host_template structure used while registering with SCSI-ml
2944  */
2945 static struct scsi_host_template bnx2fc_shost_template = {
2946 	.module			= THIS_MODULE,
2947 	.name			= "QLogic Offload FCoE Initiator",
2948 	.queuecommand		= bnx2fc_queuecommand,
2949 	.eh_timed_out		= fc_eh_timed_out,
2950 	.eh_abort_handler	= bnx2fc_eh_abort,	  /* abts */
2951 	.eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2952 	.eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2953 	.eh_host_reset_handler	= fc_eh_host_reset,
2954 	.slave_alloc		= fc_slave_alloc,
2955 	.change_queue_depth	= scsi_change_queue_depth,
2956 	.this_id		= -1,
2957 	.cmd_per_lun		= 3,
2958 	.sg_tablesize		= BNX2FC_MAX_BDS_PER_CMD,
2959 	.dma_boundary           = 0x7fff,
2960 	.max_sectors		= 0x3fbf,
2961 	.track_queue_depth	= 1,
2962 	.slave_configure	= bnx2fc_slave_configure,
2963 	.shost_groups		= bnx2fc_host_groups,
2964 	.cmd_size		= sizeof(struct bnx2fc_priv),
2965 };
2966 
2967 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2968 	.frame_send		= bnx2fc_xmit,
2969 	.elsct_send		= bnx2fc_elsct_send,
2970 	.fcp_abort_io		= bnx2fc_abort_io,
2971 	.fcp_cleanup		= bnx2fc_cleanup,
2972 	.get_lesb		= fcoe_get_lesb,
2973 	.rport_event_callback	= bnx2fc_rport_event_handler,
2974 };
2975 
2976 /*
2977  * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2978  *			structure carrying callback function pointers
2979  */
2980 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2981 	.owner			= THIS_MODULE,
2982 	.cnic_init		= bnx2fc_ulp_init,
2983 	.cnic_exit		= bnx2fc_ulp_exit,
2984 	.cnic_start		= bnx2fc_ulp_start,
2985 	.cnic_stop		= bnx2fc_ulp_stop,
2986 	.indicate_kcqes		= bnx2fc_indicate_kcqe,
2987 	.indicate_netevent	= bnx2fc_indicate_netevent,
2988 	.cnic_get_stats		= bnx2fc_ulp_get_stats,
2989 };
2990