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drm/tests: hdmi: Fix memory leaks in drm_display_mode_from_cea_vic()
[drm/drm-misc.git] / drivers / scsi / bnx2fc / bnx2fc_fcoe.c
blobf49783b89d04f428797bbd869cfc8d7a49a5328a
1 /* bnx2fc_fcoe.c: QLogic Linux FCoE offload driver.
2 * This file contains the code that interacts with libfc, libfcoe,
3 * cnic modules to create FCoE instances, send/receive non-offloaded
4 * FIP/FCoE packets, listen to link events etc.
5 *
6 * Copyright (c) 2008-2013 Broadcom Corporation
7 * Copyright (c) 2014-2016 QLogic Corporation
8 * Copyright (c) 2016-2017 Cavium Inc.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation.
13 *
14 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
15 */
16
17 #include "bnx2fc.h"
18
19 #include <linux/ethtool.h>
20
21 static struct list_head adapter_list;
22 static struct list_head if_list;
23 static u32 adapter_count;
24 static DEFINE_MUTEX(bnx2fc_dev_lock);
25 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
26
27 #define DRV_MODULE_NAME "bnx2fc"
28 #define DRV_MODULE_VERSION BNX2FC_VERSION
29 #define DRV_MODULE_RELDATE "October 15, 2015"
30
31
32 static char version[] =
33 "QLogic FCoE Driver " DRV_MODULE_NAME \
34 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
35
36
37 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
38 MODULE_DESCRIPTION("QLogic FCoE Driver");
39 MODULE_LICENSE("GPL");
40 MODULE_VERSION(DRV_MODULE_VERSION);
41
42 #define BNX2FC_MAX_QUEUE_DEPTH 256
43 #define BNX2FC_MIN_QUEUE_DEPTH 32
44 #define FCOE_WORD_TO_BYTE 4
45
46 static struct scsi_transport_template *bnx2fc_transport_template;
47 static struct scsi_transport_template *bnx2fc_vport_xport_template;
48
49 struct workqueue_struct *bnx2fc_wq;
50
51 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
52 * Here the io threads are per cpu but the l2 thread is just one
53 */
54 struct fcoe_percpu_s bnx2fc_global;
55 static DEFINE_SPINLOCK(bnx2fc_global_lock);
56
57 static struct cnic_ulp_ops bnx2fc_cnic_cb;
58 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
59 static struct scsi_host_template bnx2fc_shost_template;
60 static struct fc_function_template bnx2fc_transport_function;
61 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
62 static struct fc_function_template bnx2fc_vport_xport_function;
63 static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode);
64 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
65 static int bnx2fc_destroy(struct net_device *net_device);
66 static int bnx2fc_enable(struct net_device *netdev);
67 static int bnx2fc_disable(struct net_device *netdev);
68
69 /* fcoe_syfs control interface handlers */
70 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
71 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
72
73 static void bnx2fc_recv_frame(struct sk_buff *skb);
74
75 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
76 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
77 static int bnx2fc_lport_config(struct fc_lport *lport);
78 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
79 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
80 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
81 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
82 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
83 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
84 struct device *parent, int npiv);
85 static void bnx2fc_port_destroy(struct fcoe_port *port);
86
87 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
88 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
89 *phys_dev);
90 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
91 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
92
93 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
94 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
95
96 static void bnx2fc_port_shutdown(struct fc_lport *lport);
97 static void bnx2fc_stop(struct bnx2fc_interface *interface);
98 static int __init bnx2fc_mod_init(void);
99 static void __exit bnx2fc_mod_exit(void);
100
101 unsigned int bnx2fc_debug_level;
102 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
103 MODULE_PARM_DESC(debug_logging,
104 "Option to enable extended logging,\n"
105 "\t\tDefault is 0 - no logging.\n"
106 "\t\t0x01 - SCSI cmd error, cleanup.\n"
107 "\t\t0x02 - Session setup, cleanup, etc.\n"
108 "\t\t0x04 - lport events, link, mtu, etc.\n"
109 "\t\t0x08 - ELS logs.\n"
110 "\t\t0x10 - fcoe L2 fame related logs.\n"
111 "\t\t0xff - LOG all messages.");
112
113 static uint bnx2fc_devloss_tmo;
114 module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO);
115 MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports "
116 "attached via bnx2fc.");
117
118 static uint bnx2fc_max_luns = BNX2FC_MAX_LUN;
119 module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO);
120 MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default "
121 "0xffff.");
122
123 static uint bnx2fc_queue_depth;
124 module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO);
125 MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices "
126 "attached via bnx2fc.");
127
128 static uint bnx2fc_log_fka;
129 module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
130 MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
131 "initiating a FIP keep alive when debug logging is enabled.");
132
133 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
134 {
135 return ((struct bnx2fc_interface *)
136 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
137 }
138
139 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
140 {
141 struct fcoe_ctlr_device *ctlr_dev =
142 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
143 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
144 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
145
146 fcf_dev->vlan_id = fcoe->vlan_id;
147 }
148
149 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
150 {
151 struct fcoe_percpu_s *bg;
152 struct fcoe_rcv_info *fr;
153 struct sk_buff_head *list;
154 struct sk_buff *skb, *next;
155
156 bg = &bnx2fc_global;
157 spin_lock_bh(&bg->fcoe_rx_list.lock);
158 list = &bg->fcoe_rx_list;
159 skb_queue_walk_safe(list, skb, next) {
160 fr = fcoe_dev_from_skb(skb);
161 if (fr->fr_dev == lp) {
162 __skb_unlink(skb, list);
163 kfree_skb(skb);
164 }
165 }
166 spin_unlock_bh(&bg->fcoe_rx_list.lock);
167 }
168
169 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
170 {
171 int rc;
172 spin_lock(&bnx2fc_global_lock);
173 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
174 spin_unlock(&bnx2fc_global_lock);
175
176 return rc;
177 }
178
179 static void bnx2fc_abort_io(struct fc_lport *lport)
180 {
181 /*
182 * This function is no-op for bnx2fc, but we do
183 * not want to leave it as NULL either, as libfc
184 * can call the default function which is
185 * fc_fcp_abort_io.
186 */
187 }
188
189 static void bnx2fc_cleanup(struct fc_lport *lport)
190 {
191 struct fcoe_port *port = lport_priv(lport);
192 struct bnx2fc_interface *interface = port->priv;
193 struct bnx2fc_hba *hba = interface->hba;
194 struct bnx2fc_rport *tgt;
195 int i;
196
197 BNX2FC_MISC_DBG("Entered %s\n", __func__);
198 mutex_lock(&hba->hba_mutex);
199 spin_lock_bh(&hba->hba_lock);
200 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
201 tgt = hba->tgt_ofld_list[i];
202 if (tgt) {
203 /* Cleanup IOs belonging to requested vport */
204 if (tgt->port == port) {
205 spin_unlock_bh(&hba->hba_lock);
206 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
207 bnx2fc_flush_active_ios(tgt);
208 spin_lock_bh(&hba->hba_lock);
209 }
210 }
211 }
212 spin_unlock_bh(&hba->hba_lock);
213 mutex_unlock(&hba->hba_mutex);
214 }
215
216 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
217 struct fc_frame *fp)
218 {
219 struct fc_rport_priv *rdata = tgt->rdata;
220 struct fc_frame_header *fh;
221 int rc = 0;
222
223 fh = fc_frame_header_get(fp);
224 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
225 "r_ctl = 0x%x\n", rdata->ids.port_id,
226 ntohs(fh->fh_ox_id), fh->fh_r_ctl);
227 if ((fh->fh_type == FC_TYPE_ELS) &&
228 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
229
230 switch (fc_frame_payload_op(fp)) {
231 case ELS_ADISC:
232 rc = bnx2fc_send_adisc(tgt, fp);
233 break;
234 case ELS_LOGO:
235 rc = bnx2fc_send_logo(tgt, fp);
236 break;
237 case ELS_RLS:
238 rc = bnx2fc_send_rls(tgt, fp);
239 break;
240 default:
241 break;
242 }
243 } else if ((fh->fh_type == FC_TYPE_BLS) &&
244 (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
245 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
246 else {
247 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
248 "rctl 0x%x thru non-offload path\n",
249 fh->fh_type, fh->fh_r_ctl);
250 return -ENODEV;
251 }
252 if (rc)
253 return -ENOMEM;
254 else
255 return 0;
256 }
257
258 /**
259 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
260 *
261 * @lport: the associated local port
262 * @fp: the fc_frame to be transmitted
263 */
264 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
265 {
266 struct ethhdr *eh;
267 struct fcoe_crc_eof *cp;
268 struct sk_buff *skb;
269 struct fc_frame_header *fh;
270 struct bnx2fc_interface *interface;
271 struct fcoe_ctlr *ctlr;
272 struct bnx2fc_hba *hba;
273 struct fcoe_port *port;
274 struct fcoe_hdr *hp;
275 struct bnx2fc_rport *tgt;
276 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 */
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
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
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 */
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
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
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
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 */
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
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
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 */
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
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
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
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 */
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 */
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 */
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 */
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
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
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
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
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
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
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 }
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
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
1324 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1325 {
1326 kref_get(&interface->kref);
1327 }
1328
1329 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1330 {
1331 kref_put(&interface->kref, bnx2fc_interface_release);
1332 }
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 */
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 *
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 */
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
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
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
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
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 */
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
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
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 */
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
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 strscpy(hba->chip_num, "BCM57710", sizeof(hba->chip_num));
1738 break;
1739 case PCI_DEVICE_ID_NX2_57711:
1740 strscpy(hba->chip_num, "BCM57711", sizeof(hba->chip_num));
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 strscpy(hba->chip_num, "BCM57712", sizeof(hba->chip_num));
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 strscpy(hba->chip_num, "BCM57800", sizeof(hba->chip_num));
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 strscpy(hba->chip_num, "BCM57810", sizeof(hba->chip_num));
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 strscpy(hba->chip_num, "BCM57840", sizeof(hba->chip_num));
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
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 */
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 strscpy(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 */
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
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
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
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
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 */
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
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 */
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 */
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 */
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
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
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 */
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 */
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 */
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 = alloc_ordered_workqueue(
2367 "%s", WQ_MEM_RECLAIM, "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 */
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 */
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 **/
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
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
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 */
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
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 */
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
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 */
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
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
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 **/
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
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
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
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 };
Kernel DRM miscellaneous fixes and cross-tree changes