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mm/zsmalloc: allocate exactly size of struct zs_pool
[linux/fpc-iii.git] / drivers / scsi / bnx2fc / bnx2fc_fcoe.c
blobe861f286b42e494339eb46d5e58510911f7d43c8
1 /* bnx2fc_fcoe.c: QLogic NetXtreme II 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, QLogic Corporation
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation.
12 *
13 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
14 */
15
16 #include "bnx2fc.h"
17
18 static struct list_head adapter_list;
19 static struct list_head if_list;
20 static u32 adapter_count;
21 static DEFINE_MUTEX(bnx2fc_dev_lock);
22 DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
23
24 #define DRV_MODULE_NAME "bnx2fc"
25 #define DRV_MODULE_VERSION BNX2FC_VERSION
26 #define DRV_MODULE_RELDATE "Dec 11, 2013"
27
28
29 static char version[] =
30 "QLogic NetXtreme II FCoE Driver " DRV_MODULE_NAME \
31 " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
32
33
34 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
35 MODULE_DESCRIPTION("QLogic NetXtreme II BCM57710 FCoE Driver");
36 MODULE_LICENSE("GPL");
37 MODULE_VERSION(DRV_MODULE_VERSION);
38
39 #define BNX2FC_MAX_QUEUE_DEPTH 256
40 #define BNX2FC_MIN_QUEUE_DEPTH 32
41 #define FCOE_WORD_TO_BYTE 4
42
43 static struct scsi_transport_template *bnx2fc_transport_template;
44 static struct scsi_transport_template *bnx2fc_vport_xport_template;
45
46 struct workqueue_struct *bnx2fc_wq;
47
48 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
49 * Here the io threads are per cpu but the l2 thread is just one
50 */
51 struct fcoe_percpu_s bnx2fc_global;
52 DEFINE_SPINLOCK(bnx2fc_global_lock);
53
54 static struct cnic_ulp_ops bnx2fc_cnic_cb;
55 static struct libfc_function_template bnx2fc_libfc_fcn_templ;
56 static struct scsi_host_template bnx2fc_shost_template;
57 static struct fc_function_template bnx2fc_transport_function;
58 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
59 static struct fc_function_template bnx2fc_vport_xport_function;
60 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
61 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
62 static int bnx2fc_destroy(struct net_device *net_device);
63 static int bnx2fc_enable(struct net_device *netdev);
64 static int bnx2fc_disable(struct net_device *netdev);
65
66 /* fcoe_syfs control interface handlers */
67 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
68 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
69
70 static void bnx2fc_recv_frame(struct sk_buff *skb);
71
72 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
73 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
74 static int bnx2fc_lport_config(struct fc_lport *lport);
75 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
76 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
77 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
78 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
79 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
80 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
81 struct device *parent, int npiv);
82 static void bnx2fc_destroy_work(struct work_struct *work);
83
84 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
85 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
86 *phys_dev);
87 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
88 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
89
90 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
91 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
92
93 static void bnx2fc_port_shutdown(struct fc_lport *lport);
94 static void bnx2fc_stop(struct bnx2fc_interface *interface);
95 static int __init bnx2fc_mod_init(void);
96 static void __exit bnx2fc_mod_exit(void);
97
98 unsigned int bnx2fc_debug_level;
99 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
100
101 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
102 unsigned long action, void *hcpu);
103 /* notification function for CPU hotplug events */
104 static struct notifier_block bnx2fc_cpu_notifier = {
105 .notifier_call = bnx2fc_cpu_callback,
106 };
107
108 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
109 {
110 return ((struct bnx2fc_interface *)
111 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
112 }
113
114 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
115 {
116 struct fcoe_ctlr_device *ctlr_dev =
117 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
118 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
119 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
120
121 fcf_dev->vlan_id = fcoe->vlan_id;
122 }
123
124 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
125 {
126 struct fcoe_percpu_s *bg;
127 struct fcoe_rcv_info *fr;
128 struct sk_buff_head *list;
129 struct sk_buff *skb, *next;
130 struct sk_buff *head;
131
132 bg = &bnx2fc_global;
133 spin_lock_bh(&bg->fcoe_rx_list.lock);
134 list = &bg->fcoe_rx_list;
135 head = list->next;
136 for (skb = head; skb != (struct sk_buff *)list;
137 skb = next) {
138 next = skb->next;
139 fr = fcoe_dev_from_skb(skb);
140 if (fr->fr_dev == lp) {
141 __skb_unlink(skb, list);
142 kfree_skb(skb);
143 }
144 }
145 spin_unlock_bh(&bg->fcoe_rx_list.lock);
146 }
147
148 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
149 {
150 int rc;
151 spin_lock(&bnx2fc_global_lock);
152 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
153 spin_unlock(&bnx2fc_global_lock);
154
155 return rc;
156 }
157
158 static void bnx2fc_abort_io(struct fc_lport *lport)
159 {
160 /*
161 * This function is no-op for bnx2fc, but we do
162 * not want to leave it as NULL either, as libfc
163 * can call the default function which is
164 * fc_fcp_abort_io.
165 */
166 }
167
168 static void bnx2fc_cleanup(struct fc_lport *lport)
169 {
170 struct fcoe_port *port = lport_priv(lport);
171 struct bnx2fc_interface *interface = port->priv;
172 struct bnx2fc_hba *hba = interface->hba;
173 struct bnx2fc_rport *tgt;
174 int i;
175
176 BNX2FC_MISC_DBG("Entered %s\n", __func__);
177 mutex_lock(&hba->hba_mutex);
178 spin_lock_bh(&hba->hba_lock);
179 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
180 tgt = hba->tgt_ofld_list[i];
181 if (tgt) {
182 /* Cleanup IOs belonging to requested vport */
183 if (tgt->port == port) {
184 spin_unlock_bh(&hba->hba_lock);
185 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
186 bnx2fc_flush_active_ios(tgt);
187 spin_lock_bh(&hba->hba_lock);
188 }
189 }
190 }
191 spin_unlock_bh(&hba->hba_lock);
192 mutex_unlock(&hba->hba_mutex);
193 }
194
195 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
196 struct fc_frame *fp)
197 {
198 struct fc_rport_priv *rdata = tgt->rdata;
199 struct fc_frame_header *fh;
200 int rc = 0;
201
202 fh = fc_frame_header_get(fp);
203 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
204 "r_ctl = 0x%x\n", rdata->ids.port_id,
205 ntohs(fh->fh_ox_id), fh->fh_r_ctl);
206 if ((fh->fh_type == FC_TYPE_ELS) &&
207 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
208
209 switch (fc_frame_payload_op(fp)) {
210 case ELS_ADISC:
211 rc = bnx2fc_send_adisc(tgt, fp);
212 break;
213 case ELS_LOGO:
214 rc = bnx2fc_send_logo(tgt, fp);
215 break;
216 case ELS_RLS:
217 rc = bnx2fc_send_rls(tgt, fp);
218 break;
219 default:
220 break;
221 }
222 } else if ((fh->fh_type == FC_TYPE_BLS) &&
223 (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
224 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
225 else {
226 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
227 "rctl 0x%x thru non-offload path\n",
228 fh->fh_type, fh->fh_r_ctl);
229 return -ENODEV;
230 }
231 if (rc)
232 return -ENOMEM;
233 else
234 return 0;
235 }
236
237 /**
238 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
239 *
240 * @lport: the associated local port
241 * @fp: the fc_frame to be transmitted
242 */
243 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
244 {
245 struct ethhdr *eh;
246 struct fcoe_crc_eof *cp;
247 struct sk_buff *skb;
248 struct fc_frame_header *fh;
249 struct bnx2fc_interface *interface;
250 struct fcoe_ctlr *ctlr;
251 struct bnx2fc_hba *hba;
252 struct fcoe_port *port;
253 struct fcoe_hdr *hp;
254 struct bnx2fc_rport *tgt;
255 struct fc_stats *stats;
256 u8 sof, eof;
257 u32 crc;
258 unsigned int hlen, tlen, elen;
259 int wlen, rc = 0;
260
261 port = (struct fcoe_port *)lport_priv(lport);
262 interface = port->priv;
263 ctlr = bnx2fc_to_ctlr(interface);
264 hba = interface->hba;
265
266 fh = fc_frame_header_get(fp);
267
268 skb = fp_skb(fp);
269 if (!lport->link_up) {
270 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
271 kfree_skb(skb);
272 return 0;
273 }
274
275 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
276 if (!ctlr->sel_fcf) {
277 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
278 kfree_skb(skb);
279 return -EINVAL;
280 }
281 if (fcoe_ctlr_els_send(ctlr, lport, skb))
282 return 0;
283 }
284
285 sof = fr_sof(fp);
286 eof = fr_eof(fp);
287
288 /*
289 * Snoop the frame header to check if the frame is for
290 * an offloaded session
291 */
292 /*
293 * tgt_ofld_list access is synchronized using
294 * both hba mutex and hba lock. Atleast hba mutex or
295 * hba lock needs to be held for read access.
296 */
297
298 spin_lock_bh(&hba->hba_lock);
299 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
300 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
301 /* This frame is for offloaded session */
302 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
303 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
304 spin_unlock_bh(&hba->hba_lock);
305 rc = bnx2fc_xmit_l2_frame(tgt, fp);
306 if (rc != -ENODEV) {
307 kfree_skb(skb);
308 return rc;
309 }
310 } else {
311 spin_unlock_bh(&hba->hba_lock);
312 }
313
314 elen = sizeof(struct ethhdr);
315 hlen = sizeof(struct fcoe_hdr);
316 tlen = sizeof(struct fcoe_crc_eof);
317 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
318
319 skb->ip_summed = CHECKSUM_NONE;
320 crc = fcoe_fc_crc(fp);
321
322 /* copy port crc and eof to the skb buff */
323 if (skb_is_nonlinear(skb)) {
324 skb_frag_t *frag;
325 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
326 kfree_skb(skb);
327 return -ENOMEM;
328 }
329 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
330 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
331 } else {
332 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
333 }
334
335 memset(cp, 0, sizeof(*cp));
336 cp->fcoe_eof = eof;
337 cp->fcoe_crc32 = cpu_to_le32(~crc);
338 if (skb_is_nonlinear(skb)) {
339 kunmap_atomic(cp);
340 cp = NULL;
341 }
342
343 /* adjust skb network/transport offsets to match mac/fcoe/port */
344 skb_push(skb, elen + hlen);
345 skb_reset_mac_header(skb);
346 skb_reset_network_header(skb);
347 skb->mac_len = elen;
348 skb->protocol = htons(ETH_P_FCOE);
349 skb->dev = interface->netdev;
350
351 /* fill up mac and fcoe headers */
352 eh = eth_hdr(skb);
353 eh->h_proto = htons(ETH_P_FCOE);
354 if (ctlr->map_dest)
355 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
356 else
357 /* insert GW address */
358 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
359
360 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
361 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
362 else
363 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
364
365 hp = (struct fcoe_hdr *)(eh + 1);
366 memset(hp, 0, sizeof(*hp));
367 if (FC_FCOE_VER)
368 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
369 hp->fcoe_sof = sof;
370
371 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
372 if (lport->seq_offload && fr_max_payload(fp)) {
373 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
374 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
375 } else {
376 skb_shinfo(skb)->gso_type = 0;
377 skb_shinfo(skb)->gso_size = 0;
378 }
379
380 /*update tx stats */
381 stats = per_cpu_ptr(lport->stats, get_cpu());
382 stats->TxFrames++;
383 stats->TxWords += wlen;
384 put_cpu();
385
386 /* send down to lld */
387 fr_dev(fp) = lport;
388 if (port->fcoe_pending_queue.qlen)
389 fcoe_check_wait_queue(lport, skb);
390 else if (fcoe_start_io(skb))
391 fcoe_check_wait_queue(lport, skb);
392
393 return 0;
394 }
395
396 /**
397 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
398 *
399 * @skb: the receive socket buffer
400 * @dev: associated net device
401 * @ptype: context
402 * @olddev: last device
403 *
404 * This function receives the packet and builds FC frame and passes it up
405 */
406 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
407 struct packet_type *ptype, struct net_device *olddev)
408 {
409 struct fc_lport *lport;
410 struct bnx2fc_interface *interface;
411 struct fcoe_ctlr *ctlr;
412 struct fc_frame_header *fh;
413 struct fcoe_rcv_info *fr;
414 struct fcoe_percpu_s *bg;
415 struct sk_buff *tmp_skb;
416 unsigned short oxid;
417
418 interface = container_of(ptype, struct bnx2fc_interface,
419 fcoe_packet_type);
420 ctlr = bnx2fc_to_ctlr(interface);
421 lport = ctlr->lp;
422
423 if (unlikely(lport == NULL)) {
424 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
425 goto err;
426 }
427
428 tmp_skb = skb_share_check(skb, GFP_ATOMIC);
429 if (!tmp_skb)
430 goto err;
431
432 skb = tmp_skb;
433
434 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
435 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
436 goto err;
437 }
438
439 /*
440 * Check for minimum frame length, and make sure required FCoE
441 * and FC headers are pulled into the linear data area.
442 */
443 if (unlikely((skb->len < FCOE_MIN_FRAME) ||
444 !pskb_may_pull(skb, FCOE_HEADER_LEN)))
445 goto err;
446
447 skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
448 fh = (struct fc_frame_header *) skb_transport_header(skb);
449
450 oxid = ntohs(fh->fh_ox_id);
451
452 fr = fcoe_dev_from_skb(skb);
453 fr->fr_dev = lport;
454
455 bg = &bnx2fc_global;
456 spin_lock(&bg->fcoe_rx_list.lock);
457
458 __skb_queue_tail(&bg->fcoe_rx_list, skb);
459 if (bg->fcoe_rx_list.qlen == 1)
460 wake_up_process(bg->thread);
461
462 spin_unlock(&bg->fcoe_rx_list.lock);
463
464 return 0;
465 err:
466 kfree_skb(skb);
467 return -1;
468 }
469
470 static int bnx2fc_l2_rcv_thread(void *arg)
471 {
472 struct fcoe_percpu_s *bg = arg;
473 struct sk_buff *skb;
474
475 set_user_nice(current, MIN_NICE);
476 set_current_state(TASK_INTERRUPTIBLE);
477 while (!kthread_should_stop()) {
478 schedule();
479 spin_lock_bh(&bg->fcoe_rx_list.lock);
480 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
481 spin_unlock_bh(&bg->fcoe_rx_list.lock);
482 bnx2fc_recv_frame(skb);
483 spin_lock_bh(&bg->fcoe_rx_list.lock);
484 }
485 __set_current_state(TASK_INTERRUPTIBLE);
486 spin_unlock_bh(&bg->fcoe_rx_list.lock);
487 }
488 __set_current_state(TASK_RUNNING);
489 return 0;
490 }
491
492
493 static void bnx2fc_recv_frame(struct sk_buff *skb)
494 {
495 u32 fr_len;
496 struct fc_lport *lport;
497 struct fcoe_rcv_info *fr;
498 struct fc_stats *stats;
499 struct fc_frame_header *fh;
500 struct fcoe_crc_eof crc_eof;
501 struct fc_frame *fp;
502 struct fc_lport *vn_port;
503 struct fcoe_port *port;
504 u8 *mac = NULL;
505 u8 *dest_mac = NULL;
506 struct fcoe_hdr *hp;
507
508 fr = fcoe_dev_from_skb(skb);
509 lport = fr->fr_dev;
510 if (unlikely(lport == NULL)) {
511 printk(KERN_ERR PFX "Invalid lport struct\n");
512 kfree_skb(skb);
513 return;
514 }
515
516 if (skb_is_nonlinear(skb))
517 skb_linearize(skb);
518 mac = eth_hdr(skb)->h_source;
519 dest_mac = eth_hdr(skb)->h_dest;
520
521 /* Pull the header */
522 hp = (struct fcoe_hdr *) skb_network_header(skb);
523 fh = (struct fc_frame_header *) skb_transport_header(skb);
524 skb_pull(skb, sizeof(struct fcoe_hdr));
525 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
526
527 fp = (struct fc_frame *)skb;
528 fc_frame_init(fp);
529 fr_dev(fp) = lport;
530 fr_sof(fp) = hp->fcoe_sof;
531 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
532 kfree_skb(skb);
533 return;
534 }
535 fr_eof(fp) = crc_eof.fcoe_eof;
536 fr_crc(fp) = crc_eof.fcoe_crc32;
537 if (pskb_trim(skb, fr_len)) {
538 kfree_skb(skb);
539 return;
540 }
541
542 fh = fc_frame_header_get(fp);
543
544 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
545 if (vn_port) {
546 port = lport_priv(vn_port);
547 if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
548 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
549 kfree_skb(skb);
550 return;
551 }
552 }
553 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
554 fh->fh_type == FC_TYPE_FCP) {
555 /* Drop FCP data. We dont this in L2 path */
556 kfree_skb(skb);
557 return;
558 }
559 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
560 fh->fh_type == FC_TYPE_ELS) {
561 switch (fc_frame_payload_op(fp)) {
562 case ELS_LOGO:
563 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
564 /* drop non-FIP LOGO */
565 kfree_skb(skb);
566 return;
567 }
568 break;
569 }
570 }
571
572 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
573 /* Drop incoming ABTS */
574 kfree_skb(skb);
575 return;
576 }
577
578 stats = per_cpu_ptr(lport->stats, smp_processor_id());
579 stats->RxFrames++;
580 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
581
582 if (le32_to_cpu(fr_crc(fp)) !=
583 ~crc32(~0, skb->data, fr_len)) {
584 if (stats->InvalidCRCCount < 5)
585 printk(KERN_WARNING PFX "dropping frame with "
586 "CRC error\n");
587 stats->InvalidCRCCount++;
588 kfree_skb(skb);
589 return;
590 }
591 fc_exch_recv(lport, fp);
592 }
593
594 /**
595 * bnx2fc_percpu_io_thread - thread per cpu for ios
596 *
597 * @arg: ptr to bnx2fc_percpu_info structure
598 */
599 int bnx2fc_percpu_io_thread(void *arg)
600 {
601 struct bnx2fc_percpu_s *p = arg;
602 struct bnx2fc_work *work, *tmp;
603 LIST_HEAD(work_list);
604
605 set_user_nice(current, MIN_NICE);
606 set_current_state(TASK_INTERRUPTIBLE);
607 while (!kthread_should_stop()) {
608 schedule();
609 spin_lock_bh(&p->fp_work_lock);
610 while (!list_empty(&p->work_list)) {
611 list_splice_init(&p->work_list, &work_list);
612 spin_unlock_bh(&p->fp_work_lock);
613
614 list_for_each_entry_safe(work, tmp, &work_list, list) {
615 list_del_init(&work->list);
616 bnx2fc_process_cq_compl(work->tgt, work->wqe);
617 kfree(work);
618 }
619
620 spin_lock_bh(&p->fp_work_lock);
621 }
622 __set_current_state(TASK_INTERRUPTIBLE);
623 spin_unlock_bh(&p->fp_work_lock);
624 }
625 __set_current_state(TASK_RUNNING);
626
627 return 0;
628 }
629
630 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
631 {
632 struct fc_host_statistics *bnx2fc_stats;
633 struct fc_lport *lport = shost_priv(shost);
634 struct fcoe_port *port = lport_priv(lport);
635 struct bnx2fc_interface *interface = port->priv;
636 struct bnx2fc_hba *hba = interface->hba;
637 struct fcoe_statistics_params *fw_stats;
638 int rc = 0;
639
640 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
641 if (!fw_stats)
642 return NULL;
643
644 bnx2fc_stats = fc_get_host_stats(shost);
645
646 init_completion(&hba->stat_req_done);
647 if (bnx2fc_send_stat_req(hba))
648 return bnx2fc_stats;
649 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
650 if (!rc) {
651 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
652 return bnx2fc_stats;
653 }
654 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
655 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
656 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
657 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
658 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
659 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
660 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
661 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
662 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
663 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
664
665 bnx2fc_stats->dumped_frames = 0;
666 bnx2fc_stats->lip_count = 0;
667 bnx2fc_stats->nos_count = 0;
668 bnx2fc_stats->loss_of_sync_count = 0;
669 bnx2fc_stats->loss_of_signal_count = 0;
670 bnx2fc_stats->prim_seq_protocol_err_count = 0;
671
672 memcpy(&hba->prev_stats, hba->stats_buffer,
673 sizeof(struct fcoe_statistics_params));
674 return bnx2fc_stats;
675 }
676
677 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
678 {
679 struct fcoe_port *port = lport_priv(lport);
680 struct bnx2fc_interface *interface = port->priv;
681 struct bnx2fc_hba *hba = interface->hba;
682 struct Scsi_Host *shost = lport->host;
683 int rc = 0;
684
685 shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
686 shost->max_lun = BNX2FC_MAX_LUN;
687 shost->max_id = BNX2FC_MAX_FCP_TGT;
688 shost->max_channel = 0;
689 if (lport->vport)
690 shost->transportt = bnx2fc_vport_xport_template;
691 else
692 shost->transportt = bnx2fc_transport_template;
693
694 /* Add the new host to SCSI-ml */
695 rc = scsi_add_host(lport->host, dev);
696 if (rc) {
697 printk(KERN_ERR PFX "Error on scsi_add_host\n");
698 return rc;
699 }
700 if (!lport->vport)
701 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
702 snprintf(fc_host_symbolic_name(lport->host), 256,
703 "%s (QLogic %s) v%s over %s",
704 BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
705 interface->netdev->name);
706
707 return 0;
708 }
709
710 static int bnx2fc_link_ok(struct fc_lport *lport)
711 {
712 struct fcoe_port *port = lport_priv(lport);
713 struct bnx2fc_interface *interface = port->priv;
714 struct bnx2fc_hba *hba = interface->hba;
715 struct net_device *dev = hba->phys_dev;
716 int rc = 0;
717
718 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
719 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
720 else {
721 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
722 rc = -1;
723 }
724 return rc;
725 }
726
727 /**
728 * bnx2fc_get_link_state - get network link state
729 *
730 * @hba: adapter instance pointer
731 *
732 * updates adapter structure flag based on netdev state
733 */
734 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
735 {
736 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
737 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
738 else
739 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
740 }
741
742 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
743 {
744 struct bnx2fc_hba *hba;
745 struct bnx2fc_interface *interface;
746 struct fcoe_ctlr *ctlr;
747 struct fcoe_port *port;
748 u64 wwnn, wwpn;
749
750 port = lport_priv(lport);
751 interface = port->priv;
752 ctlr = bnx2fc_to_ctlr(interface);
753 hba = interface->hba;
754
755 /* require support for get_pauseparam ethtool op. */
756 if (!hba->phys_dev->ethtool_ops ||
757 !hba->phys_dev->ethtool_ops->get_pauseparam)
758 return -EOPNOTSUPP;
759
760 if (fc_set_mfs(lport, BNX2FC_MFS))
761 return -EINVAL;
762
763 skb_queue_head_init(&port->fcoe_pending_queue);
764 port->fcoe_pending_queue_active = 0;
765 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
766
767 fcoe_link_speed_update(lport);
768
769 if (!lport->vport) {
770 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
771 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
772 1, 0);
773 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
774 fc_set_wwnn(lport, wwnn);
775
776 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
777 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
778 2, 0);
779
780 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
781 fc_set_wwpn(lport, wwpn);
782 }
783
784 return 0;
785 }
786
787 static void bnx2fc_destroy_timer(unsigned long data)
788 {
789 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
790
791 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
792 "Destroy compl not received!!\n");
793 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
794 wake_up_interruptible(&hba->destroy_wait);
795 }
796
797 /**
798 * bnx2fc_indicate_netevent - Generic netdev event handler
799 *
800 * @context: adapter structure pointer
801 * @event: event type
802 * @vlan_id: vlan id - associated vlan id with this event
803 *
804 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
805 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
806 */
807 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
808 u16 vlan_id)
809 {
810 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
811 struct fcoe_ctlr_device *cdev;
812 struct fc_lport *lport;
813 struct fc_lport *vport;
814 struct bnx2fc_interface *interface, *tmp;
815 struct fcoe_ctlr *ctlr;
816 int wait_for_upload = 0;
817 u32 link_possible = 1;
818
819 if (vlan_id != 0 && event != NETDEV_UNREGISTER)
820 return;
821
822 switch (event) {
823 case NETDEV_UP:
824 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
825 printk(KERN_ERR "indicate_netevent: "\
826 "hba is not UP!!\n");
827 break;
828
829 case NETDEV_DOWN:
830 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
831 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
832 link_possible = 0;
833 break;
834
835 case NETDEV_GOING_DOWN:
836 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
837 link_possible = 0;
838 break;
839
840 case NETDEV_CHANGE:
841 break;
842
843 case NETDEV_UNREGISTER:
844 if (!vlan_id)
845 return;
846 mutex_lock(&bnx2fc_dev_lock);
847 list_for_each_entry_safe(interface, tmp, &if_list, list) {
848 if (interface->hba == hba &&
849 interface->vlan_id == (vlan_id & VLAN_VID_MASK))
850 __bnx2fc_destroy(interface);
851 }
852 mutex_unlock(&bnx2fc_dev_lock);
853
854 /* Ensure ALL destroy work has been completed before return */
855 flush_workqueue(bnx2fc_wq);
856 return;
857
858 default:
859 printk(KERN_ERR PFX "Unknown netevent %ld", event);
860 return;
861 }
862
863 mutex_lock(&bnx2fc_dev_lock);
864 list_for_each_entry(interface, &if_list, list) {
865
866 if (interface->hba != hba)
867 continue;
868
869 ctlr = bnx2fc_to_ctlr(interface);
870 lport = ctlr->lp;
871 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
872 interface->netdev->name, event);
873
874 fcoe_link_speed_update(lport);
875
876 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
877
878 if (link_possible && !bnx2fc_link_ok(lport)) {
879 switch (cdev->enabled) {
880 case FCOE_CTLR_DISABLED:
881 pr_info("Link up while interface is disabled.\n");
882 break;
883 case FCOE_CTLR_ENABLED:
884 case FCOE_CTLR_UNUSED:
885 /* Reset max recv frame size to default */
886 fc_set_mfs(lport, BNX2FC_MFS);
887 /*
888 * ctlr link up will only be handled during
889 * enable to avoid sending discovery
890 * solicitation on a stale vlan
891 */
892 if (interface->enabled)
893 fcoe_ctlr_link_up(ctlr);
894 };
895 } else if (fcoe_ctlr_link_down(ctlr)) {
896 switch (cdev->enabled) {
897 case FCOE_CTLR_DISABLED:
898 pr_info("Link down while interface is disabled.\n");
899 break;
900 case FCOE_CTLR_ENABLED:
901 case FCOE_CTLR_UNUSED:
902 mutex_lock(&lport->lp_mutex);
903 list_for_each_entry(vport, &lport->vports, list)
904 fc_host_port_type(vport->host) =
905 FC_PORTTYPE_UNKNOWN;
906 mutex_unlock(&lport->lp_mutex);
907 fc_host_port_type(lport->host) =
908 FC_PORTTYPE_UNKNOWN;
909 per_cpu_ptr(lport->stats,
910 get_cpu())->LinkFailureCount++;
911 put_cpu();
912 fcoe_clean_pending_queue(lport);
913 wait_for_upload = 1;
914 };
915 }
916 }
917 mutex_unlock(&bnx2fc_dev_lock);
918
919 if (wait_for_upload) {
920 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
921 init_waitqueue_head(&hba->shutdown_wait);
922 BNX2FC_MISC_DBG("indicate_netevent "
923 "num_ofld_sess = %d\n",
924 hba->num_ofld_sess);
925 hba->wait_for_link_down = 1;
926 wait_event_interruptible(hba->shutdown_wait,
927 (hba->num_ofld_sess == 0));
928 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
929 hba->num_ofld_sess);
930 hba->wait_for_link_down = 0;
931
932 if (signal_pending(current))
933 flush_signals(current);
934 }
935 }
936
937 static int bnx2fc_libfc_config(struct fc_lport *lport)
938 {
939
940 /* Set the function pointers set by bnx2fc driver */
941 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
942 sizeof(struct libfc_function_template));
943 fc_elsct_init(lport);
944 fc_exch_init(lport);
945 fc_rport_init(lport);
946 fc_disc_init(lport);
947 fc_disc_config(lport, lport);
948 return 0;
949 }
950
951 static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
952 {
953 int fcoe_min_xid, fcoe_max_xid;
954
955 fcoe_min_xid = hba->max_xid + 1;
956 if (nr_cpu_ids <= 2)
957 fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
958 else
959 fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
960 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
961 fcoe_max_xid, NULL)) {
962 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
963 return -ENOMEM;
964 }
965
966 return 0;
967 }
968
969 static int bnx2fc_lport_config(struct fc_lport *lport)
970 {
971 lport->link_up = 0;
972 lport->qfull = 0;
973 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
974 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
975 lport->e_d_tov = 2 * 1000;
976 lport->r_a_tov = 10 * 1000;
977
978 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
979 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
980 lport->does_npiv = 1;
981
982 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
983 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
984
985 /* alloc stats structure */
986 if (fc_lport_init_stats(lport))
987 return -ENOMEM;
988
989 /* Finish fc_lport configuration */
990 fc_lport_config(lport);
991
992 return 0;
993 }
994
995 /**
996 * bnx2fc_fip_recv - handle a received FIP frame.
997 *
998 * @skb: the received skb
999 * @dev: associated &net_device
1000 * @ptype: the &packet_type structure which was used to register this handler.
1001 * @orig_dev: original receive &net_device, in case @ dev is a bond.
1002 *
1003 * Returns: 0 for success
1004 */
1005 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1006 struct packet_type *ptype,
1007 struct net_device *orig_dev)
1008 {
1009 struct bnx2fc_interface *interface;
1010 struct fcoe_ctlr *ctlr;
1011 interface = container_of(ptype, struct bnx2fc_interface,
1012 fip_packet_type);
1013 ctlr = bnx2fc_to_ctlr(interface);
1014 fcoe_ctlr_recv(ctlr, skb);
1015 return 0;
1016 }
1017
1018 /**
1019 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1020 *
1021 * @fip: FCoE controller.
1022 * @old: Unicast MAC address to delete if the MAC is non-zero.
1023 * @new: Unicast MAC address to add.
1024 *
1025 * Remove any previously-set unicast MAC filter.
1026 * Add secondary FCoE MAC address filter for our OUI.
1027 */
1028 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1029 {
1030 struct fcoe_port *port = lport_priv(lport);
1031
1032 memcpy(port->data_src_addr, addr, ETH_ALEN);
1033 }
1034
1035 /**
1036 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1037 *
1038 * @lport: libfc port
1039 */
1040 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1041 {
1042 struct fcoe_port *port;
1043
1044 port = (struct fcoe_port *)lport_priv(lport);
1045 return port->data_src_addr;
1046 }
1047
1048 /**
1049 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1050 *
1051 * @fip: FCoE controller.
1052 * @skb: FIP Packet.
1053 */
1054 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1055 {
1056 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1057 dev_queue_xmit(skb);
1058 }
1059
1060 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1061 {
1062 struct Scsi_Host *shost = vport_to_shost(vport);
1063 struct fc_lport *n_port = shost_priv(shost);
1064 struct fcoe_port *port = lport_priv(n_port);
1065 struct bnx2fc_interface *interface = port->priv;
1066 struct net_device *netdev = interface->netdev;
1067 struct fc_lport *vn_port;
1068 int rc;
1069 char buf[32];
1070
1071 rc = fcoe_validate_vport_create(vport);
1072 if (rc) {
1073 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1074 printk(KERN_ERR PFX "Failed to create vport, "
1075 "WWPN (0x%s) already exists\n",
1076 buf);
1077 return rc;
1078 }
1079
1080 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1081 printk(KERN_ERR PFX "vn ports cannot be created on"
1082 "this interface\n");
1083 return -EIO;
1084 }
1085 rtnl_lock();
1086 mutex_lock(&bnx2fc_dev_lock);
1087 vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1088 mutex_unlock(&bnx2fc_dev_lock);
1089 rtnl_unlock();
1090
1091 if (!vn_port) {
1092 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1093 netdev->name);
1094 return -EIO;
1095 }
1096
1097 if (disabled) {
1098 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1099 } else {
1100 vn_port->boot_time = jiffies;
1101 fc_lport_init(vn_port);
1102 fc_fabric_login(vn_port);
1103 fc_vport_setlink(vn_port);
1104 }
1105 return 0;
1106 }
1107
1108 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1109 {
1110 struct bnx2fc_lport *blport, *tmp;
1111
1112 spin_lock_bh(&hba->hba_lock);
1113 list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1114 if (blport->lport == lport) {
1115 list_del(&blport->list);
1116 kfree(blport);
1117 }
1118 }
1119 spin_unlock_bh(&hba->hba_lock);
1120 }
1121
1122 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1123 {
1124 struct Scsi_Host *shost = vport_to_shost(vport);
1125 struct fc_lport *n_port = shost_priv(shost);
1126 struct fc_lport *vn_port = vport->dd_data;
1127 struct fcoe_port *port = lport_priv(vn_port);
1128 struct bnx2fc_interface *interface = port->priv;
1129 struct fc_lport *v_port;
1130 bool found = false;
1131
1132 mutex_lock(&n_port->lp_mutex);
1133 list_for_each_entry(v_port, &n_port->vports, list)
1134 if (v_port->vport == vport) {
1135 found = true;
1136 break;
1137 }
1138
1139 if (!found) {
1140 mutex_unlock(&n_port->lp_mutex);
1141 return -ENOENT;
1142 }
1143 list_del(&vn_port->list);
1144 mutex_unlock(&n_port->lp_mutex);
1145 bnx2fc_free_vport(interface->hba, port->lport);
1146 bnx2fc_port_shutdown(port->lport);
1147 bnx2fc_interface_put(interface);
1148 queue_work(bnx2fc_wq, &port->destroy_work);
1149 return 0;
1150 }
1151
1152 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1153 {
1154 struct fc_lport *lport = vport->dd_data;
1155
1156 if (disable) {
1157 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1158 fc_fabric_logoff(lport);
1159 } else {
1160 lport->boot_time = jiffies;
1161 fc_fabric_login(lport);
1162 fc_vport_setlink(lport);
1163 }
1164 return 0;
1165 }
1166
1167
1168 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1169 {
1170 struct net_device *netdev = interface->netdev;
1171 struct net_device *physdev = interface->hba->phys_dev;
1172 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1173 struct netdev_hw_addr *ha;
1174 int sel_san_mac = 0;
1175
1176 /* setup Source MAC Address */
1177 rcu_read_lock();
1178 for_each_dev_addr(physdev, ha) {
1179 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1180 ha->type);
1181 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1182 ha->addr[1], ha->addr[2], ha->addr[3],
1183 ha->addr[4], ha->addr[5]);
1184
1185 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1186 (is_valid_ether_addr(ha->addr))) {
1187 memcpy(ctlr->ctl_src_addr, ha->addr,
1188 ETH_ALEN);
1189 sel_san_mac = 1;
1190 BNX2FC_MISC_DBG("Found SAN MAC\n");
1191 }
1192 }
1193 rcu_read_unlock();
1194
1195 if (!sel_san_mac)
1196 return -ENODEV;
1197
1198 interface->fip_packet_type.func = bnx2fc_fip_recv;
1199 interface->fip_packet_type.type = htons(ETH_P_FIP);
1200 interface->fip_packet_type.dev = netdev;
1201 dev_add_pack(&interface->fip_packet_type);
1202
1203 interface->fcoe_packet_type.func = bnx2fc_rcv;
1204 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1205 interface->fcoe_packet_type.dev = netdev;
1206 dev_add_pack(&interface->fcoe_packet_type);
1207
1208 return 0;
1209 }
1210
1211 static int bnx2fc_attach_transport(void)
1212 {
1213 bnx2fc_transport_template =
1214 fc_attach_transport(&bnx2fc_transport_function);
1215
1216 if (bnx2fc_transport_template == NULL) {
1217 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1218 return -ENODEV;
1219 }
1220
1221 bnx2fc_vport_xport_template =
1222 fc_attach_transport(&bnx2fc_vport_xport_function);
1223 if (bnx2fc_vport_xport_template == NULL) {
1224 printk(KERN_ERR PFX
1225 "Failed to attach FC transport for vport\n");
1226 fc_release_transport(bnx2fc_transport_template);
1227 bnx2fc_transport_template = NULL;
1228 return -ENODEV;
1229 }
1230 return 0;
1231 }
1232 static void bnx2fc_release_transport(void)
1233 {
1234 fc_release_transport(bnx2fc_transport_template);
1235 fc_release_transport(bnx2fc_vport_xport_template);
1236 bnx2fc_transport_template = NULL;
1237 bnx2fc_vport_xport_template = NULL;
1238 }
1239
1240 static void bnx2fc_interface_release(struct kref *kref)
1241 {
1242 struct fcoe_ctlr_device *ctlr_dev;
1243 struct bnx2fc_interface *interface;
1244 struct fcoe_ctlr *ctlr;
1245 struct net_device *netdev;
1246
1247 interface = container_of(kref, struct bnx2fc_interface, kref);
1248 BNX2FC_MISC_DBG("Interface is being released\n");
1249
1250 ctlr = bnx2fc_to_ctlr(interface);
1251 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1252 netdev = interface->netdev;
1253
1254 /* tear-down FIP controller */
1255 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1256 fcoe_ctlr_destroy(ctlr);
1257
1258 fcoe_ctlr_device_delete(ctlr_dev);
1259
1260 dev_put(netdev);
1261 module_put(THIS_MODULE);
1262 }
1263
1264 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1265 {
1266 kref_get(&interface->kref);
1267 }
1268
1269 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1270 {
1271 kref_put(&interface->kref, bnx2fc_interface_release);
1272 }
1273 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1274 {
1275 /* Free the command manager */
1276 if (hba->cmd_mgr) {
1277 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1278 hba->cmd_mgr = NULL;
1279 }
1280 kfree(hba->tgt_ofld_list);
1281 bnx2fc_unbind_pcidev(hba);
1282 kfree(hba);
1283 }
1284
1285 /**
1286 * bnx2fc_hba_create - create a new bnx2fc hba
1287 *
1288 * @cnic: pointer to cnic device
1289 *
1290 * Creates a new FCoE hba on the given device.
1291 *
1292 */
1293 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1294 {
1295 struct bnx2fc_hba *hba;
1296 struct fcoe_capabilities *fcoe_cap;
1297 int rc;
1298
1299 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1300 if (!hba) {
1301 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1302 return NULL;
1303 }
1304 spin_lock_init(&hba->hba_lock);
1305 mutex_init(&hba->hba_mutex);
1306
1307 hba->cnic = cnic;
1308
1309 hba->max_tasks = cnic->max_fcoe_exchanges;
1310 hba->elstm_xids = (hba->max_tasks / 2);
1311 hba->max_outstanding_cmds = hba->elstm_xids;
1312 hba->max_xid = (hba->max_tasks - 1);
1313
1314 rc = bnx2fc_bind_pcidev(hba);
1315 if (rc) {
1316 printk(KERN_ERR PFX "create_adapter: bind error\n");
1317 goto bind_err;
1318 }
1319 hba->phys_dev = cnic->netdev;
1320 hba->next_conn_id = 0;
1321
1322 hba->tgt_ofld_list =
1323 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1324 GFP_KERNEL);
1325 if (!hba->tgt_ofld_list) {
1326 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1327 goto tgtofld_err;
1328 }
1329
1330 hba->num_ofld_sess = 0;
1331
1332 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1333 if (!hba->cmd_mgr) {
1334 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1335 goto cmgr_err;
1336 }
1337 fcoe_cap = &hba->fcoe_cap;
1338
1339 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1340 FCOE_IOS_PER_CONNECTION_SHIFT;
1341 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1342 FCOE_LOGINS_PER_PORT_SHIFT;
1343 fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1344 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1345 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1346 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1347 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1348 FCOE_TARGETS_SUPPORTED_SHIFT;
1349 fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1350 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1351 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1352
1353 init_waitqueue_head(&hba->shutdown_wait);
1354 init_waitqueue_head(&hba->destroy_wait);
1355 INIT_LIST_HEAD(&hba->vports);
1356
1357 return hba;
1358
1359 cmgr_err:
1360 kfree(hba->tgt_ofld_list);
1361 tgtofld_err:
1362 bnx2fc_unbind_pcidev(hba);
1363 bind_err:
1364 kfree(hba);
1365 return NULL;
1366 }
1367
1368 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1369 struct net_device *netdev,
1370 enum fip_state fip_mode)
1371 {
1372 struct fcoe_ctlr_device *ctlr_dev;
1373 struct bnx2fc_interface *interface;
1374 struct fcoe_ctlr *ctlr;
1375 int size;
1376 int rc = 0;
1377
1378 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1379 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1380 size);
1381 if (!ctlr_dev) {
1382 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1383 return NULL;
1384 }
1385 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1386 ctlr->cdev = ctlr_dev;
1387 interface = fcoe_ctlr_priv(ctlr);
1388 dev_hold(netdev);
1389 kref_init(&interface->kref);
1390 interface->hba = hba;
1391 interface->netdev = netdev;
1392
1393 /* Initialize FIP */
1394 fcoe_ctlr_init(ctlr, fip_mode);
1395 ctlr->send = bnx2fc_fip_send;
1396 ctlr->update_mac = bnx2fc_update_src_mac;
1397 ctlr->get_src_addr = bnx2fc_get_src_mac;
1398 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1399
1400 rc = bnx2fc_interface_setup(interface);
1401 if (!rc)
1402 return interface;
1403
1404 fcoe_ctlr_destroy(ctlr);
1405 dev_put(netdev);
1406 fcoe_ctlr_device_delete(ctlr_dev);
1407 return NULL;
1408 }
1409
1410 /**
1411 * bnx2fc_if_create - Create FCoE instance on a given interface
1412 *
1413 * @interface: FCoE interface to create a local port on
1414 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1415 * @npiv: Indicates if the port is vport or not
1416 *
1417 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1418 *
1419 * Returns: Allocated fc_lport or an error pointer
1420 */
1421 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1422 struct device *parent, int npiv)
1423 {
1424 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1425 struct fc_lport *lport, *n_port;
1426 struct fcoe_port *port;
1427 struct Scsi_Host *shost;
1428 struct fc_vport *vport = dev_to_vport(parent);
1429 struct bnx2fc_lport *blport;
1430 struct bnx2fc_hba *hba = interface->hba;
1431 int rc = 0;
1432
1433 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1434 if (!blport) {
1435 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1436 return NULL;
1437 }
1438
1439 /* Allocate Scsi_Host structure */
1440 bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1441 if (!npiv)
1442 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1443 else
1444 lport = libfc_vport_create(vport, sizeof(*port));
1445
1446 if (!lport) {
1447 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1448 goto free_blport;
1449 }
1450 shost = lport->host;
1451 port = lport_priv(lport);
1452 port->lport = lport;
1453 port->priv = interface;
1454 port->get_netdev = bnx2fc_netdev;
1455 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1456
1457 /* Configure fcoe_port */
1458 rc = bnx2fc_lport_config(lport);
1459 if (rc)
1460 goto lp_config_err;
1461
1462 if (npiv) {
1463 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1464 vport->node_name, vport->port_name);
1465 fc_set_wwnn(lport, vport->node_name);
1466 fc_set_wwpn(lport, vport->port_name);
1467 }
1468 /* Configure netdev and networking properties of the lport */
1469 rc = bnx2fc_net_config(lport, interface->netdev);
1470 if (rc) {
1471 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1472 goto lp_config_err;
1473 }
1474
1475 rc = bnx2fc_shost_config(lport, parent);
1476 if (rc) {
1477 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1478 interface->netdev->name);
1479 goto lp_config_err;
1480 }
1481
1482 /* Initialize the libfc library */
1483 rc = bnx2fc_libfc_config(lport);
1484 if (rc) {
1485 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1486 goto shost_err;
1487 }
1488 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1489
1490 /* Allocate exchange manager */
1491 if (!npiv)
1492 rc = bnx2fc_em_config(lport, hba);
1493 else {
1494 shost = vport_to_shost(vport);
1495 n_port = shost_priv(shost);
1496 rc = fc_exch_mgr_list_clone(n_port, lport);
1497 }
1498
1499 if (rc) {
1500 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1501 goto shost_err;
1502 }
1503
1504 bnx2fc_interface_get(interface);
1505
1506 spin_lock_bh(&hba->hba_lock);
1507 blport->lport = lport;
1508 list_add_tail(&blport->list, &hba->vports);
1509 spin_unlock_bh(&hba->hba_lock);
1510
1511 return lport;
1512
1513 shost_err:
1514 scsi_remove_host(shost);
1515 lp_config_err:
1516 scsi_host_put(lport->host);
1517 free_blport:
1518 kfree(blport);
1519 return NULL;
1520 }
1521
1522 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1523 {
1524 /* Dont listen for Ethernet packets anymore */
1525 __dev_remove_pack(&interface->fcoe_packet_type);
1526 __dev_remove_pack(&interface->fip_packet_type);
1527 synchronize_net();
1528 }
1529
1530 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1531 {
1532 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1533 struct fc_lport *lport = ctlr->lp;
1534 struct fcoe_port *port = lport_priv(lport);
1535 struct bnx2fc_hba *hba = interface->hba;
1536
1537 /* Stop the transmit retry timer */
1538 del_timer_sync(&port->timer);
1539
1540 /* Free existing transmit skbs */
1541 fcoe_clean_pending_queue(lport);
1542
1543 bnx2fc_net_cleanup(interface);
1544
1545 bnx2fc_free_vport(hba, lport);
1546 }
1547
1548 static void bnx2fc_if_destroy(struct fc_lport *lport)
1549 {
1550
1551 /* Free queued packets for the receive thread */
1552 bnx2fc_clean_rx_queue(lport);
1553
1554 /* Detach from scsi-ml */
1555 fc_remove_host(lport->host);
1556 scsi_remove_host(lport->host);
1557
1558 /*
1559 * Note that only the physical lport will have the exchange manager.
1560 * for vports, this function is NOP
1561 */
1562 fc_exch_mgr_free(lport);
1563
1564 /* Free memory used by statistical counters */
1565 fc_lport_free_stats(lport);
1566
1567 /* Release Scsi_Host */
1568 scsi_host_put(lport->host);
1569 }
1570
1571 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1572 {
1573 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1574 struct fc_lport *lport = ctlr->lp;
1575 struct fcoe_port *port = lport_priv(lport);
1576
1577 bnx2fc_interface_cleanup(interface);
1578 bnx2fc_stop(interface);
1579 list_del(&interface->list);
1580 bnx2fc_interface_put(interface);
1581 queue_work(bnx2fc_wq, &port->destroy_work);
1582 }
1583
1584 /**
1585 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1586 *
1587 * @buffer: The name of the Ethernet interface to be destroyed
1588 * @kp: The associated kernel parameter
1589 *
1590 * Called from sysfs.
1591 *
1592 * Returns: 0 for success
1593 */
1594 static int bnx2fc_destroy(struct net_device *netdev)
1595 {
1596 struct bnx2fc_interface *interface = NULL;
1597 struct workqueue_struct *timer_work_queue;
1598 struct fcoe_ctlr *ctlr;
1599 int rc = 0;
1600
1601 rtnl_lock();
1602 mutex_lock(&bnx2fc_dev_lock);
1603
1604 interface = bnx2fc_interface_lookup(netdev);
1605 ctlr = bnx2fc_to_ctlr(interface);
1606 if (!interface || !ctlr->lp) {
1607 rc = -ENODEV;
1608 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1609 goto netdev_err;
1610 }
1611
1612 timer_work_queue = interface->timer_work_queue;
1613 __bnx2fc_destroy(interface);
1614 destroy_workqueue(timer_work_queue);
1615
1616 netdev_err:
1617 mutex_unlock(&bnx2fc_dev_lock);
1618 rtnl_unlock();
1619 return rc;
1620 }
1621
1622 static void bnx2fc_destroy_work(struct work_struct *work)
1623 {
1624 struct fcoe_port *port;
1625 struct fc_lport *lport;
1626
1627 port = container_of(work, struct fcoe_port, destroy_work);
1628 lport = port->lport;
1629
1630 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1631
1632 bnx2fc_if_destroy(lport);
1633 }
1634
1635 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1636 {
1637 bnx2fc_free_fw_resc(hba);
1638 bnx2fc_free_task_ctx(hba);
1639 }
1640
1641 /**
1642 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1643 * pci structure
1644 *
1645 * @hba: Adapter instance
1646 */
1647 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1648 {
1649 if (bnx2fc_setup_task_ctx(hba))
1650 goto mem_err;
1651
1652 if (bnx2fc_setup_fw_resc(hba))
1653 goto mem_err;
1654
1655 return 0;
1656 mem_err:
1657 bnx2fc_unbind_adapter_devices(hba);
1658 return -ENOMEM;
1659 }
1660
1661 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1662 {
1663 struct cnic_dev *cnic;
1664 struct pci_dev *pdev;
1665
1666 if (!hba->cnic) {
1667 printk(KERN_ERR PFX "cnic is NULL\n");
1668 return -ENODEV;
1669 }
1670 cnic = hba->cnic;
1671 pdev = hba->pcidev = cnic->pcidev;
1672 if (!hba->pcidev)
1673 return -ENODEV;
1674
1675 switch (pdev->device) {
1676 case PCI_DEVICE_ID_NX2_57710:
1677 strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
1678 break;
1679 case PCI_DEVICE_ID_NX2_57711:
1680 strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
1681 break;
1682 case PCI_DEVICE_ID_NX2_57712:
1683 case PCI_DEVICE_ID_NX2_57712_MF:
1684 case PCI_DEVICE_ID_NX2_57712_VF:
1685 strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
1686 break;
1687 case PCI_DEVICE_ID_NX2_57800:
1688 case PCI_DEVICE_ID_NX2_57800_MF:
1689 case PCI_DEVICE_ID_NX2_57800_VF:
1690 strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
1691 break;
1692 case PCI_DEVICE_ID_NX2_57810:
1693 case PCI_DEVICE_ID_NX2_57810_MF:
1694 case PCI_DEVICE_ID_NX2_57810_VF:
1695 strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
1696 break;
1697 case PCI_DEVICE_ID_NX2_57840:
1698 case PCI_DEVICE_ID_NX2_57840_MF:
1699 case PCI_DEVICE_ID_NX2_57840_VF:
1700 case PCI_DEVICE_ID_NX2_57840_2_20:
1701 case PCI_DEVICE_ID_NX2_57840_4_10:
1702 strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
1703 break;
1704 default:
1705 pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1706 break;
1707 }
1708 pci_dev_get(hba->pcidev);
1709 return 0;
1710 }
1711
1712 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1713 {
1714 if (hba->pcidev) {
1715 hba->chip_num[0] = '\0';
1716 pci_dev_put(hba->pcidev);
1717 }
1718 hba->pcidev = NULL;
1719 }
1720
1721 /**
1722 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1723 *
1724 * @handle: transport handle pointing to adapter struture
1725 */
1726 static int bnx2fc_ulp_get_stats(void *handle)
1727 {
1728 struct bnx2fc_hba *hba = handle;
1729 struct cnic_dev *cnic;
1730 struct fcoe_stats_info *stats_addr;
1731
1732 if (!hba)
1733 return -EINVAL;
1734
1735 cnic = hba->cnic;
1736 stats_addr = &cnic->stats_addr->fcoe_stat;
1737 if (!stats_addr)
1738 return -EINVAL;
1739
1740 strncpy(stats_addr->version, BNX2FC_VERSION,
1741 sizeof(stats_addr->version));
1742 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1743 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1744
1745 return 0;
1746 }
1747
1748
1749 /**
1750 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1751 *
1752 * @handle: transport handle pointing to adapter structure
1753 *
1754 * This function maps adapter structure to pcidev structure and initiates
1755 * firmware handshake to enable/initialize on-chip FCoE components.
1756 * This bnx2fc - cnic interface api callback is used after following
1757 * conditions are met -
1758 * a) underlying network interface is up (marked by event NETDEV_UP
1759 * from netdev
1760 * b) bnx2fc adatper structure is registered.
1761 */
1762 static void bnx2fc_ulp_start(void *handle)
1763 {
1764 struct bnx2fc_hba *hba = handle;
1765 struct bnx2fc_interface *interface;
1766 struct fcoe_ctlr *ctlr;
1767 struct fc_lport *lport;
1768
1769 mutex_lock(&bnx2fc_dev_lock);
1770
1771 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1772 bnx2fc_fw_init(hba);
1773
1774 BNX2FC_MISC_DBG("bnx2fc started.\n");
1775
1776 list_for_each_entry(interface, &if_list, list) {
1777 if (interface->hba == hba) {
1778 ctlr = bnx2fc_to_ctlr(interface);
1779 lport = ctlr->lp;
1780 /* Kick off Fabric discovery*/
1781 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1782 lport->tt.frame_send = bnx2fc_xmit;
1783 bnx2fc_start_disc(interface);
1784 }
1785 }
1786
1787 mutex_unlock(&bnx2fc_dev_lock);
1788 }
1789
1790 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1791 {
1792 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1793 fc_fabric_logoff(lport);
1794 fc_lport_destroy(lport);
1795 }
1796
1797 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1798 {
1799 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1800 struct fc_lport *lport;
1801 struct fc_lport *vport;
1802
1803 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1804 return;
1805
1806 lport = ctlr->lp;
1807 bnx2fc_port_shutdown(lport);
1808
1809 mutex_lock(&lport->lp_mutex);
1810 list_for_each_entry(vport, &lport->vports, list)
1811 fc_host_port_type(vport->host) =
1812 FC_PORTTYPE_UNKNOWN;
1813 mutex_unlock(&lport->lp_mutex);
1814 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1815 fcoe_ctlr_link_down(ctlr);
1816 fcoe_clean_pending_queue(lport);
1817 }
1818
1819 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1820 {
1821 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1822 int rc = -1;
1823 int i = HZ;
1824
1825 rc = bnx2fc_bind_adapter_devices(hba);
1826 if (rc) {
1827 printk(KERN_ALERT PFX
1828 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1829 goto err_out;
1830 }
1831
1832 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1833 if (rc) {
1834 printk(KERN_ALERT PFX
1835 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1836 goto err_unbind;
1837 }
1838
1839 /*
1840 * Wait until the adapter init message is complete, and adapter
1841 * state is UP.
1842 */
1843 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1844 msleep(BNX2FC_INIT_POLL_TIME);
1845
1846 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1847 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1848 "Ignoring...\n",
1849 hba->cnic->netdev->name);
1850 rc = -1;
1851 goto err_unbind;
1852 }
1853
1854
1855 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1856 return 0;
1857
1858 err_unbind:
1859 bnx2fc_unbind_adapter_devices(hba);
1860 err_out:
1861 return rc;
1862 }
1863
1864 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1865 {
1866 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1867 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1868 init_timer(&hba->destroy_timer);
1869 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1870 jiffies;
1871 hba->destroy_timer.function = bnx2fc_destroy_timer;
1872 hba->destroy_timer.data = (unsigned long)hba;
1873 add_timer(&hba->destroy_timer);
1874 wait_event_interruptible(hba->destroy_wait,
1875 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1876 &hba->flags));
1877 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1878 /* This should never happen */
1879 if (signal_pending(current))
1880 flush_signals(current);
1881
1882 del_timer_sync(&hba->destroy_timer);
1883 }
1884 bnx2fc_unbind_adapter_devices(hba);
1885 }
1886 }
1887
1888 /**
1889 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1890 *
1891 * @handle: transport handle pointing to adapter structure
1892 *
1893 * Driver checks if adapter is already in shutdown mode, if not start
1894 * the shutdown process.
1895 */
1896 static void bnx2fc_ulp_stop(void *handle)
1897 {
1898 struct bnx2fc_hba *hba = handle;
1899 struct bnx2fc_interface *interface;
1900
1901 printk(KERN_ERR "ULP_STOP\n");
1902
1903 mutex_lock(&bnx2fc_dev_lock);
1904 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1905 goto exit;
1906 list_for_each_entry(interface, &if_list, list) {
1907 if (interface->hba == hba)
1908 bnx2fc_stop(interface);
1909 }
1910 BUG_ON(hba->num_ofld_sess != 0);
1911
1912 mutex_lock(&hba->hba_mutex);
1913 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1914 clear_bit(ADAPTER_STATE_GOING_DOWN,
1915 &hba->adapter_state);
1916
1917 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1918 mutex_unlock(&hba->hba_mutex);
1919
1920 bnx2fc_fw_destroy(hba);
1921 exit:
1922 mutex_unlock(&bnx2fc_dev_lock);
1923 }
1924
1925 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1926 {
1927 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1928 struct fc_lport *lport;
1929 int wait_cnt = 0;
1930
1931 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1932 /* Kick off FIP/FLOGI */
1933 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1934 printk(KERN_ERR PFX "Init not done yet\n");
1935 return;
1936 }
1937
1938 lport = ctlr->lp;
1939 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1940
1941 if (!bnx2fc_link_ok(lport) && interface->enabled) {
1942 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1943 fcoe_ctlr_link_up(ctlr);
1944 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1945 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1946 }
1947
1948 /* wait for the FCF to be selected before issuing FLOGI */
1949 while (!ctlr->sel_fcf) {
1950 msleep(250);
1951 /* give up after 3 secs */
1952 if (++wait_cnt > 12)
1953 break;
1954 }
1955
1956 /* Reset max receive frame size to default */
1957 if (fc_set_mfs(lport, BNX2FC_MFS))
1958 return;
1959
1960 fc_lport_init(lport);
1961 fc_fabric_login(lport);
1962 }
1963
1964
1965 /**
1966 * bnx2fc_ulp_init - Initialize an adapter instance
1967 *
1968 * @dev : cnic device handle
1969 * Called from cnic_register_driver() context to initialize all
1970 * enumerated cnic devices. This routine allocates adapter structure
1971 * and other device specific resources.
1972 */
1973 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1974 {
1975 struct bnx2fc_hba *hba;
1976 int rc = 0;
1977
1978 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1979 /* bnx2fc works only when bnx2x is loaded */
1980 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1981 (dev->max_fcoe_conn == 0)) {
1982 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1983 " flags: %lx fcoe_conn: %d\n",
1984 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1985 return;
1986 }
1987
1988 hba = bnx2fc_hba_create(dev);
1989 if (!hba) {
1990 printk(KERN_ERR PFX "hba initialization failed\n");
1991 return;
1992 }
1993
1994 /* Add HBA to the adapter list */
1995 mutex_lock(&bnx2fc_dev_lock);
1996 list_add_tail(&hba->list, &adapter_list);
1997 adapter_count++;
1998 mutex_unlock(&bnx2fc_dev_lock);
1999
2000 dev->fcoe_cap = &hba->fcoe_cap;
2001 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2002 rc = dev->register_device(dev, CNIC_ULP_FCOE,
2003 (void *) hba);
2004 if (rc)
2005 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2006 else
2007 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2008 }
2009
2010 /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2011 static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2012 {
2013 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2014
2015 if (interface->enabled == true) {
2016 if (!ctlr->lp) {
2017 pr_err(PFX "__bnx2fc_disable: lport not found\n");
2018 return -ENODEV;
2019 } else {
2020 interface->enabled = false;
2021 fcoe_ctlr_link_down(ctlr);
2022 fcoe_clean_pending_queue(ctlr->lp);
2023 }
2024 }
2025 return 0;
2026 }
2027
2028 /**
2029 * Deperecated: Use bnx2fc_enabled()
2030 */
2031 static int bnx2fc_disable(struct net_device *netdev)
2032 {
2033 struct bnx2fc_interface *interface;
2034 struct fcoe_ctlr *ctlr;
2035 int rc = 0;
2036
2037 rtnl_lock();
2038 mutex_lock(&bnx2fc_dev_lock);
2039
2040 interface = bnx2fc_interface_lookup(netdev);
2041 ctlr = bnx2fc_to_ctlr(interface);
2042
2043 if (!interface) {
2044 rc = -ENODEV;
2045 pr_err(PFX "bnx2fc_disable: interface not found\n");
2046 } else {
2047 rc = __bnx2fc_disable(ctlr);
2048 }
2049 mutex_unlock(&bnx2fc_dev_lock);
2050 rtnl_unlock();
2051 return rc;
2052 }
2053
2054 static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2055 {
2056 struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2057
2058 if (interface->enabled == false) {
2059 if (!ctlr->lp) {
2060 pr_err(PFX "__bnx2fc_enable: lport not found\n");
2061 return -ENODEV;
2062 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2063 fcoe_ctlr_link_up(ctlr);
2064 interface->enabled = true;
2065 }
2066 }
2067 return 0;
2068 }
2069
2070 /**
2071 * Deprecated: Use bnx2fc_enabled()
2072 */
2073 static int bnx2fc_enable(struct net_device *netdev)
2074 {
2075 struct bnx2fc_interface *interface;
2076 struct fcoe_ctlr *ctlr;
2077 int rc = 0;
2078
2079 rtnl_lock();
2080 mutex_lock(&bnx2fc_dev_lock);
2081
2082 interface = bnx2fc_interface_lookup(netdev);
2083 ctlr = bnx2fc_to_ctlr(interface);
2084 if (!interface) {
2085 rc = -ENODEV;
2086 pr_err(PFX "bnx2fc_enable: interface not found\n");
2087 } else {
2088 rc = __bnx2fc_enable(ctlr);
2089 }
2090
2091 mutex_unlock(&bnx2fc_dev_lock);
2092 rtnl_unlock();
2093 return rc;
2094 }
2095
2096 /**
2097 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2098 * @cdev: The FCoE Controller that is being enabled or disabled
2099 *
2100 * fcoe_sysfs will ensure that the state of 'enabled' has
2101 * changed, so no checking is necessary here. This routine simply
2102 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2103 * When those routines are removed the functionality can be merged
2104 * here.
2105 */
2106 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2107 {
2108 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2109
2110 switch (cdev->enabled) {
2111 case FCOE_CTLR_ENABLED:
2112 return __bnx2fc_enable(ctlr);
2113 case FCOE_CTLR_DISABLED:
2114 return __bnx2fc_disable(ctlr);
2115 case FCOE_CTLR_UNUSED:
2116 default:
2117 return -ENOTSUPP;
2118 };
2119 }
2120
2121 enum bnx2fc_create_link_state {
2122 BNX2FC_CREATE_LINK_DOWN,
2123 BNX2FC_CREATE_LINK_UP,
2124 };
2125
2126 /**
2127 * _bnx2fc_create() - Create bnx2fc FCoE interface
2128 * @netdev : The net_device object the Ethernet interface to create on
2129 * @fip_mode: The FIP mode for this creation
2130 * @link_state: The ctlr link state on creation
2131 *
2132 * Called from either the libfcoe 'create' module parameter
2133 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2134 *
2135 * libfcoe's 'create' module parameter is deprecated so some
2136 * consolidation of code can be done when that interface is
2137 * removed.
2138 *
2139 * Returns: 0 for success
2140 */
2141 static int _bnx2fc_create(struct net_device *netdev,
2142 enum fip_state fip_mode,
2143 enum bnx2fc_create_link_state link_state)
2144 {
2145 struct fcoe_ctlr_device *cdev;
2146 struct fcoe_ctlr *ctlr;
2147 struct bnx2fc_interface *interface;
2148 struct bnx2fc_hba *hba;
2149 struct net_device *phys_dev = netdev;
2150 struct fc_lport *lport;
2151 struct ethtool_drvinfo drvinfo;
2152 int rc = 0;
2153 int vlan_id = 0;
2154
2155 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2156 if (fip_mode != FIP_MODE_FABRIC) {
2157 printk(KERN_ERR "fip mode not FABRIC\n");
2158 return -EIO;
2159 }
2160
2161 rtnl_lock();
2162
2163 mutex_lock(&bnx2fc_dev_lock);
2164
2165 if (!try_module_get(THIS_MODULE)) {
2166 rc = -EINVAL;
2167 goto mod_err;
2168 }
2169
2170 /* obtain physical netdev */
2171 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2172 phys_dev = vlan_dev_real_dev(netdev);
2173
2174 /* verify if the physical device is a netxtreme2 device */
2175 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2176 memset(&drvinfo, 0, sizeof(drvinfo));
2177 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2178 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2179 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2180 rc = -EINVAL;
2181 goto netdev_err;
2182 }
2183 } else {
2184 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2185 rc = -EINVAL;
2186 goto netdev_err;
2187 }
2188
2189 /* obtain interface and initialize rest of the structure */
2190 hba = bnx2fc_hba_lookup(phys_dev);
2191 if (!hba) {
2192 rc = -ENODEV;
2193 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2194 goto netdev_err;
2195 }
2196
2197 if (bnx2fc_interface_lookup(netdev)) {
2198 rc = -EEXIST;
2199 goto netdev_err;
2200 }
2201
2202 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2203 if (!interface) {
2204 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2205 rc = -ENOMEM;
2206 goto ifput_err;
2207 }
2208
2209 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2210 vlan_id = vlan_dev_vlan_id(netdev);
2211 interface->vlan_enabled = 1;
2212 }
2213
2214 ctlr = bnx2fc_to_ctlr(interface);
2215 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2216 interface->vlan_id = vlan_id;
2217
2218 interface->timer_work_queue =
2219 create_singlethread_workqueue("bnx2fc_timer_wq");
2220 if (!interface->timer_work_queue) {
2221 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2222 rc = -EINVAL;
2223 goto ifput_err;
2224 }
2225
2226 lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2227 if (!lport) {
2228 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2229 netdev->name);
2230 rc = -EINVAL;
2231 goto if_create_err;
2232 }
2233
2234 /* Add interface to if_list */
2235 list_add_tail(&interface->list, &if_list);
2236
2237 lport->boot_time = jiffies;
2238
2239 /* Make this master N_port */
2240 ctlr->lp = lport;
2241
2242 if (link_state == BNX2FC_CREATE_LINK_UP)
2243 cdev->enabled = FCOE_CTLR_ENABLED;
2244 else
2245 cdev->enabled = FCOE_CTLR_DISABLED;
2246
2247 if (link_state == BNX2FC_CREATE_LINK_UP &&
2248 !bnx2fc_link_ok(lport)) {
2249 fcoe_ctlr_link_up(ctlr);
2250 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2251 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2252 }
2253
2254 BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2255 bnx2fc_start_disc(interface);
2256
2257 if (link_state == BNX2FC_CREATE_LINK_UP)
2258 interface->enabled = true;
2259
2260 /*
2261 * Release from kref_init in bnx2fc_interface_setup, on success
2262 * lport should be holding a reference taken in bnx2fc_if_create
2263 */
2264 bnx2fc_interface_put(interface);
2265 /* put netdev that was held while calling dev_get_by_name */
2266 mutex_unlock(&bnx2fc_dev_lock);
2267 rtnl_unlock();
2268 return 0;
2269
2270 if_create_err:
2271 destroy_workqueue(interface->timer_work_queue);
2272 ifput_err:
2273 bnx2fc_net_cleanup(interface);
2274 bnx2fc_interface_put(interface);
2275 goto mod_err;
2276 netdev_err:
2277 module_put(THIS_MODULE);
2278 mod_err:
2279 mutex_unlock(&bnx2fc_dev_lock);
2280 rtnl_unlock();
2281 return rc;
2282 }
2283
2284 /**
2285 * bnx2fc_create() - Create a bnx2fc interface
2286 * @netdev : The net_device object the Ethernet interface to create on
2287 * @fip_mode: The FIP mode for this creation
2288 *
2289 * Called from fcoe transport
2290 *
2291 * Returns: 0 for success
2292 */
2293 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2294 {
2295 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2296 }
2297
2298 /**
2299 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2300 * @netdev: The net_device to be used by the allocated FCoE Controller
2301 *
2302 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2303 * in a link_down state. The allows the user an opportunity to configure
2304 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2305 *
2306 * Creating in with this routine starts the FCoE Controller in Fabric
2307 * mode. The user can change to VN2VN or another mode before enabling.
2308 */
2309 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2310 {
2311 return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2312 BNX2FC_CREATE_LINK_DOWN);
2313 }
2314
2315 /**
2316 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2317 *
2318 * @cnic: Pointer to cnic device instance
2319 *
2320 **/
2321 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2322 {
2323 struct bnx2fc_hba *hba;
2324
2325 /* Called with bnx2fc_dev_lock held */
2326 list_for_each_entry(hba, &adapter_list, list) {
2327 if (hba->cnic == cnic)
2328 return hba;
2329 }
2330 return NULL;
2331 }
2332
2333 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2334 *netdev)
2335 {
2336 struct bnx2fc_interface *interface;
2337
2338 /* Called with bnx2fc_dev_lock held */
2339 list_for_each_entry(interface, &if_list, list) {
2340 if (interface->netdev == netdev)
2341 return interface;
2342 }
2343 return NULL;
2344 }
2345
2346 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2347 *phys_dev)
2348 {
2349 struct bnx2fc_hba *hba;
2350
2351 /* Called with bnx2fc_dev_lock held */
2352 list_for_each_entry(hba, &adapter_list, list) {
2353 if (hba->phys_dev == phys_dev)
2354 return hba;
2355 }
2356 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2357 return NULL;
2358 }
2359
2360 /**
2361 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2362 *
2363 * @dev cnic device handle
2364 */
2365 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2366 {
2367 struct bnx2fc_hba *hba;
2368 struct bnx2fc_interface *interface, *tmp;
2369
2370 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2371
2372 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2373 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2374 dev->netdev->name, dev->flags);
2375 return;
2376 }
2377
2378 mutex_lock(&bnx2fc_dev_lock);
2379 hba = bnx2fc_find_hba_for_cnic(dev);
2380 if (!hba) {
2381 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2382 dev);
2383 mutex_unlock(&bnx2fc_dev_lock);
2384 return;
2385 }
2386
2387 list_del_init(&hba->list);
2388 adapter_count--;
2389
2390 list_for_each_entry_safe(interface, tmp, &if_list, list)
2391 /* destroy not called yet, move to quiesced list */
2392 if (interface->hba == hba)
2393 __bnx2fc_destroy(interface);
2394 mutex_unlock(&bnx2fc_dev_lock);
2395
2396 /* Ensure ALL destroy work has been completed before return */
2397 flush_workqueue(bnx2fc_wq);
2398
2399 bnx2fc_ulp_stop(hba);
2400 /* unregister cnic device */
2401 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2402 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2403 bnx2fc_hba_destroy(hba);
2404 }
2405
2406 /**
2407 * bnx2fc_fcoe_reset - Resets the fcoe
2408 *
2409 * @shost: shost the reset is from
2410 *
2411 * Returns: always 0
2412 */
2413 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2414 {
2415 struct fc_lport *lport = shost_priv(shost);
2416 fc_lport_reset(lport);
2417 return 0;
2418 }
2419
2420
2421 static bool bnx2fc_match(struct net_device *netdev)
2422 {
2423 struct net_device *phys_dev = netdev;
2424
2425 mutex_lock(&bnx2fc_dev_lock);
2426 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2427 phys_dev = vlan_dev_real_dev(netdev);
2428
2429 if (bnx2fc_hba_lookup(phys_dev)) {
2430 mutex_unlock(&bnx2fc_dev_lock);
2431 return true;
2432 }
2433
2434 mutex_unlock(&bnx2fc_dev_lock);
2435 return false;
2436 }
2437
2438
2439 static struct fcoe_transport bnx2fc_transport = {
2440 .name = {"bnx2fc"},
2441 .attached = false,
2442 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2443 .alloc = bnx2fc_ctlr_alloc,
2444 .match = bnx2fc_match,
2445 .create = bnx2fc_create,
2446 .destroy = bnx2fc_destroy,
2447 .enable = bnx2fc_enable,
2448 .disable = bnx2fc_disable,
2449 };
2450
2451 /**
2452 * bnx2fc_percpu_thread_create - Create a receive thread for an
2453 * online CPU
2454 *
2455 * @cpu: cpu index for the online cpu
2456 */
2457 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2458 {
2459 struct bnx2fc_percpu_s *p;
2460 struct task_struct *thread;
2461
2462 p = &per_cpu(bnx2fc_percpu, cpu);
2463
2464 thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2465 (void *)p, cpu_to_node(cpu),
2466 "bnx2fc_thread/%d", cpu);
2467 /* bind thread to the cpu */
2468 if (likely(!IS_ERR(thread))) {
2469 kthread_bind(thread, cpu);
2470 p->iothread = thread;
2471 wake_up_process(thread);
2472 }
2473 }
2474
2475 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2476 {
2477 struct bnx2fc_percpu_s *p;
2478 struct task_struct *thread;
2479 struct bnx2fc_work *work, *tmp;
2480
2481 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2482
2483 /* Prevent any new work from being queued for this CPU */
2484 p = &per_cpu(bnx2fc_percpu, cpu);
2485 spin_lock_bh(&p->fp_work_lock);
2486 thread = p->iothread;
2487 p->iothread = NULL;
2488
2489
2490 /* Free all work in the list */
2491 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2492 list_del_init(&work->list);
2493 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2494 kfree(work);
2495 }
2496
2497 spin_unlock_bh(&p->fp_work_lock);
2498
2499 if (thread)
2500 kthread_stop(thread);
2501 }
2502
2503 /**
2504 * bnx2fc_cpu_callback - Handler for CPU hotplug events
2505 *
2506 * @nfb: The callback data block
2507 * @action: The event triggering the callback
2508 * @hcpu: The index of the CPU that the event is for
2509 *
2510 * This creates or destroys per-CPU data for fcoe
2511 *
2512 * Returns NOTIFY_OK always.
2513 */
2514 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2515 unsigned long action, void *hcpu)
2516 {
2517 unsigned cpu = (unsigned long)hcpu;
2518
2519 switch (action) {
2520 case CPU_ONLINE:
2521 case CPU_ONLINE_FROZEN:
2522 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2523 bnx2fc_percpu_thread_create(cpu);
2524 break;
2525 case CPU_DEAD:
2526 case CPU_DEAD_FROZEN:
2527 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2528 bnx2fc_percpu_thread_destroy(cpu);
2529 break;
2530 default:
2531 break;
2532 }
2533 return NOTIFY_OK;
2534 }
2535
2536 /**
2537 * bnx2fc_mod_init - module init entry point
2538 *
2539 * Initialize driver wide global data structures, and register
2540 * with cnic module
2541 **/
2542 static int __init bnx2fc_mod_init(void)
2543 {
2544 struct fcoe_percpu_s *bg;
2545 struct task_struct *l2_thread;
2546 int rc = 0;
2547 unsigned int cpu = 0;
2548 struct bnx2fc_percpu_s *p;
2549
2550 printk(KERN_INFO PFX "%s", version);
2551
2552 /* register as a fcoe transport */
2553 rc = fcoe_transport_attach(&bnx2fc_transport);
2554 if (rc) {
2555 printk(KERN_ERR "failed to register an fcoe transport, check "
2556 "if libfcoe is loaded\n");
2557 goto out;
2558 }
2559
2560 INIT_LIST_HEAD(&adapter_list);
2561 INIT_LIST_HEAD(&if_list);
2562 mutex_init(&bnx2fc_dev_lock);
2563 adapter_count = 0;
2564
2565 /* Attach FC transport template */
2566 rc = bnx2fc_attach_transport();
2567 if (rc)
2568 goto detach_ft;
2569
2570 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2571 if (!bnx2fc_wq) {
2572 rc = -ENOMEM;
2573 goto release_bt;
2574 }
2575
2576 bg = &bnx2fc_global;
2577 skb_queue_head_init(&bg->fcoe_rx_list);
2578 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2579 (void *)bg,
2580 "bnx2fc_l2_thread");
2581 if (IS_ERR(l2_thread)) {
2582 rc = PTR_ERR(l2_thread);
2583 goto free_wq;
2584 }
2585 wake_up_process(l2_thread);
2586 spin_lock_bh(&bg->fcoe_rx_list.lock);
2587 bg->thread = l2_thread;
2588 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2589
2590 for_each_possible_cpu(cpu) {
2591 p = &per_cpu(bnx2fc_percpu, cpu);
2592 INIT_LIST_HEAD(&p->work_list);
2593 spin_lock_init(&p->fp_work_lock);
2594 }
2595
2596 cpu_notifier_register_begin();
2597
2598 for_each_online_cpu(cpu) {
2599 bnx2fc_percpu_thread_create(cpu);
2600 }
2601
2602 /* Initialize per CPU interrupt thread */
2603 __register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2604
2605 cpu_notifier_register_done();
2606
2607 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2608
2609 return 0;
2610
2611 free_wq:
2612 destroy_workqueue(bnx2fc_wq);
2613 release_bt:
2614 bnx2fc_release_transport();
2615 detach_ft:
2616 fcoe_transport_detach(&bnx2fc_transport);
2617 out:
2618 return rc;
2619 }
2620
2621 static void __exit bnx2fc_mod_exit(void)
2622 {
2623 LIST_HEAD(to_be_deleted);
2624 struct bnx2fc_hba *hba, *next;
2625 struct fcoe_percpu_s *bg;
2626 struct task_struct *l2_thread;
2627 struct sk_buff *skb;
2628 unsigned int cpu = 0;
2629
2630 /*
2631 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2632 * it will have higher precedence than bnx2fc_dev_lock.
2633 * unregister_device() cannot be called with bnx2fc_dev_lock
2634 * held.
2635 */
2636 mutex_lock(&bnx2fc_dev_lock);
2637 list_splice(&adapter_list, &to_be_deleted);
2638 INIT_LIST_HEAD(&adapter_list);
2639 adapter_count = 0;
2640 mutex_unlock(&bnx2fc_dev_lock);
2641
2642 /* Unregister with cnic */
2643 list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2644 list_del_init(&hba->list);
2645 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2646 hba);
2647 bnx2fc_ulp_stop(hba);
2648 /* unregister cnic device */
2649 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2650 &hba->reg_with_cnic))
2651 hba->cnic->unregister_device(hba->cnic,
2652 CNIC_ULP_FCOE);
2653 bnx2fc_hba_destroy(hba);
2654 }
2655 cnic_unregister_driver(CNIC_ULP_FCOE);
2656
2657 /* Destroy global thread */
2658 bg = &bnx2fc_global;
2659 spin_lock_bh(&bg->fcoe_rx_list.lock);
2660 l2_thread = bg->thread;
2661 bg->thread = NULL;
2662 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2663 kfree_skb(skb);
2664
2665 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2666
2667 if (l2_thread)
2668 kthread_stop(l2_thread);
2669
2670 cpu_notifier_register_begin();
2671
2672 /* Destroy per cpu threads */
2673 for_each_online_cpu(cpu) {
2674 bnx2fc_percpu_thread_destroy(cpu);
2675 }
2676
2677 __unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2678
2679 cpu_notifier_register_done();
2680
2681 destroy_workqueue(bnx2fc_wq);
2682 /*
2683 * detach from scsi transport
2684 * must happen after all destroys are done
2685 */
2686 bnx2fc_release_transport();
2687
2688 /* detach from fcoe transport */
2689 fcoe_transport_detach(&bnx2fc_transport);
2690 }
2691
2692 module_init(bnx2fc_mod_init);
2693 module_exit(bnx2fc_mod_exit);
2694
2695 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2696 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2697 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2698 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2699 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2700 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2701 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2702 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2703
2704 .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2705 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2706 };
2707
2708 static struct fc_function_template bnx2fc_transport_function = {
2709 .show_host_node_name = 1,
2710 .show_host_port_name = 1,
2711 .show_host_supported_classes = 1,
2712 .show_host_supported_fc4s = 1,
2713 .show_host_active_fc4s = 1,
2714 .show_host_maxframe_size = 1,
2715
2716 .show_host_port_id = 1,
2717 .show_host_supported_speeds = 1,
2718 .get_host_speed = fc_get_host_speed,
2719 .show_host_speed = 1,
2720 .show_host_port_type = 1,
2721 .get_host_port_state = fc_get_host_port_state,
2722 .show_host_port_state = 1,
2723 .show_host_symbolic_name = 1,
2724
2725 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2726 sizeof(struct bnx2fc_rport)),
2727 .show_rport_maxframe_size = 1,
2728 .show_rport_supported_classes = 1,
2729
2730 .show_host_fabric_name = 1,
2731 .show_starget_node_name = 1,
2732 .show_starget_port_name = 1,
2733 .show_starget_port_id = 1,
2734 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2735 .show_rport_dev_loss_tmo = 1,
2736 .get_fc_host_stats = bnx2fc_get_host_stats,
2737
2738 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2739
2740 .terminate_rport_io = fc_rport_terminate_io,
2741
2742 .vport_create = bnx2fc_vport_create,
2743 .vport_delete = bnx2fc_vport_destroy,
2744 .vport_disable = bnx2fc_vport_disable,
2745 .bsg_request = fc_lport_bsg_request,
2746 };
2747
2748 static struct fc_function_template bnx2fc_vport_xport_function = {
2749 .show_host_node_name = 1,
2750 .show_host_port_name = 1,
2751 .show_host_supported_classes = 1,
2752 .show_host_supported_fc4s = 1,
2753 .show_host_active_fc4s = 1,
2754 .show_host_maxframe_size = 1,
2755
2756 .show_host_port_id = 1,
2757 .show_host_supported_speeds = 1,
2758 .get_host_speed = fc_get_host_speed,
2759 .show_host_speed = 1,
2760 .show_host_port_type = 1,
2761 .get_host_port_state = fc_get_host_port_state,
2762 .show_host_port_state = 1,
2763 .show_host_symbolic_name = 1,
2764
2765 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2766 sizeof(struct bnx2fc_rport)),
2767 .show_rport_maxframe_size = 1,
2768 .show_rport_supported_classes = 1,
2769
2770 .show_host_fabric_name = 1,
2771 .show_starget_node_name = 1,
2772 .show_starget_port_name = 1,
2773 .show_starget_port_id = 1,
2774 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2775 .show_rport_dev_loss_tmo = 1,
2776 .get_fc_host_stats = fc_get_host_stats,
2777 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2778 .terminate_rport_io = fc_rport_terminate_io,
2779 .bsg_request = fc_lport_bsg_request,
2780 };
2781
2782 /**
2783 * scsi_host_template structure used while registering with SCSI-ml
2784 */
2785 static struct scsi_host_template bnx2fc_shost_template = {
2786 .module = THIS_MODULE,
2787 .name = "QLogic Offload FCoE Initiator",
2788 .queuecommand = bnx2fc_queuecommand,
2789 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2790 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2791 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2792 .eh_host_reset_handler = fc_eh_host_reset,
2793 .slave_alloc = fc_slave_alloc,
2794 .change_queue_depth = scsi_change_queue_depth,
2795 .change_queue_type = scsi_change_queue_type,
2796 .this_id = -1,
2797 .cmd_per_lun = 3,
2798 .use_clustering = ENABLE_CLUSTERING,
2799 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2800 .max_sectors = 1024,
2801 .use_blk_tags = 1,
2802 .track_queue_depth = 1,
2803 };
2804
2805 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2806 .frame_send = bnx2fc_xmit,
2807 .elsct_send = bnx2fc_elsct_send,
2808 .fcp_abort_io = bnx2fc_abort_io,
2809 .fcp_cleanup = bnx2fc_cleanup,
2810 .get_lesb = fcoe_get_lesb,
2811 .rport_event_callback = bnx2fc_rport_event_handler,
2812 };
2813
2814 /**
2815 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2816 * structure carrying callback function pointers
2817 */
2818 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2819 .owner = THIS_MODULE,
2820 .cnic_init = bnx2fc_ulp_init,
2821 .cnic_exit = bnx2fc_ulp_exit,
2822 .cnic_start = bnx2fc_ulp_start,
2823 .cnic_stop = bnx2fc_ulp_stop,
2824 .indicate_kcqes = bnx2fc_indicate_kcqe,
2825 .indicate_netevent = bnx2fc_indicate_netevent,
2826 .cnic_get_stats = bnx2fc_ulp_get_stats,
2827 };
Linux with added FPC-III support