1 /* bnx2fc_fcoe.c: Broadcom 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.
6 * Copyright (c) 2008 - 2011 Broadcom Corporation
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation.
12 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
17 static struct list_head adapter_list
;
18 static struct list_head if_list
;
19 static u32 adapter_count
;
20 static DEFINE_MUTEX(bnx2fc_dev_lock
);
21 DEFINE_PER_CPU(struct bnx2fc_percpu_s
, bnx2fc_percpu
);
23 #define DRV_MODULE_NAME "bnx2fc"
24 #define DRV_MODULE_VERSION BNX2FC_VERSION
25 #define DRV_MODULE_RELDATE "Aug 30, 2011"
28 static char version
[] __devinitdata
=
29 "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \
30 " v" DRV_MODULE_VERSION
" (" DRV_MODULE_RELDATE
")\n";
33 MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
34 MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver");
35 MODULE_LICENSE("GPL");
36 MODULE_VERSION(DRV_MODULE_VERSION
);
38 #define BNX2FC_MAX_QUEUE_DEPTH 256
39 #define BNX2FC_MIN_QUEUE_DEPTH 32
40 #define FCOE_WORD_TO_BYTE 4
42 static struct scsi_transport_template
*bnx2fc_transport_template
;
43 static struct scsi_transport_template
*bnx2fc_vport_xport_template
;
45 struct workqueue_struct
*bnx2fc_wq
;
47 /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
48 * Here the io threads are per cpu but the l2 thread is just one
50 struct fcoe_percpu_s bnx2fc_global
;
51 DEFINE_SPINLOCK(bnx2fc_global_lock
);
53 static struct cnic_ulp_ops bnx2fc_cnic_cb
;
54 static struct libfc_function_template bnx2fc_libfc_fcn_templ
;
55 static struct scsi_host_template bnx2fc_shost_template
;
56 static struct fc_function_template bnx2fc_transport_function
;
57 static struct fc_function_template bnx2fc_vport_xport_function
;
58 static int bnx2fc_create(struct net_device
*netdev
, enum fip_state fip_mode
);
59 static void __bnx2fc_destroy(struct bnx2fc_interface
*interface
);
60 static int bnx2fc_destroy(struct net_device
*net_device
);
61 static int bnx2fc_enable(struct net_device
*netdev
);
62 static int bnx2fc_disable(struct net_device
*netdev
);
64 static void bnx2fc_recv_frame(struct sk_buff
*skb
);
66 static void bnx2fc_start_disc(struct bnx2fc_interface
*interface
);
67 static int bnx2fc_shost_config(struct fc_lport
*lport
, struct device
*dev
);
68 static int bnx2fc_lport_config(struct fc_lport
*lport
);
69 static int bnx2fc_em_config(struct fc_lport
*lport
);
70 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba
*hba
);
71 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba
*hba
);
72 static int bnx2fc_bind_pcidev(struct bnx2fc_hba
*hba
);
73 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba
*hba
);
74 static struct fc_lport
*bnx2fc_if_create(struct bnx2fc_interface
*interface
,
75 struct device
*parent
, int npiv
);
76 static void bnx2fc_destroy_work(struct work_struct
*work
);
78 static struct bnx2fc_hba
*bnx2fc_hba_lookup(struct net_device
*phys_dev
);
79 static struct bnx2fc_interface
*bnx2fc_interface_lookup(struct net_device
81 static inline void bnx2fc_interface_put(struct bnx2fc_interface
*interface
);
82 static struct bnx2fc_hba
*bnx2fc_find_hba_for_cnic(struct cnic_dev
*cnic
);
84 static int bnx2fc_fw_init(struct bnx2fc_hba
*hba
);
85 static void bnx2fc_fw_destroy(struct bnx2fc_hba
*hba
);
87 static void bnx2fc_port_shutdown(struct fc_lport
*lport
);
88 static void bnx2fc_stop(struct bnx2fc_interface
*interface
);
89 static int __init
bnx2fc_mod_init(void);
90 static void __exit
bnx2fc_mod_exit(void);
92 unsigned int bnx2fc_debug_level
;
93 module_param_named(debug_logging
, bnx2fc_debug_level
, int, S_IRUGO
|S_IWUSR
);
95 static int bnx2fc_cpu_callback(struct notifier_block
*nfb
,
96 unsigned long action
, void *hcpu
);
97 /* notification function for CPU hotplug events */
98 static struct notifier_block bnx2fc_cpu_notifier
= {
99 .notifier_call
= bnx2fc_cpu_callback
,
102 static void bnx2fc_clean_rx_queue(struct fc_lport
*lp
)
104 struct fcoe_percpu_s
*bg
;
105 struct fcoe_rcv_info
*fr
;
106 struct sk_buff_head
*list
;
107 struct sk_buff
*skb
, *next
;
108 struct sk_buff
*head
;
111 spin_lock_bh(&bg
->fcoe_rx_list
.lock
);
112 list
= &bg
->fcoe_rx_list
;
114 for (skb
= head
; skb
!= (struct sk_buff
*)list
;
117 fr
= fcoe_dev_from_skb(skb
);
118 if (fr
->fr_dev
== lp
) {
119 __skb_unlink(skb
, list
);
123 spin_unlock_bh(&bg
->fcoe_rx_list
.lock
);
126 int bnx2fc_get_paged_crc_eof(struct sk_buff
*skb
, int tlen
)
129 spin_lock(&bnx2fc_global_lock
);
130 rc
= fcoe_get_paged_crc_eof(skb
, tlen
, &bnx2fc_global
);
131 spin_unlock(&bnx2fc_global_lock
);
136 static void bnx2fc_abort_io(struct fc_lport
*lport
)
139 * This function is no-op for bnx2fc, but we do
140 * not want to leave it as NULL either, as libfc
141 * can call the default function which is
146 static void bnx2fc_cleanup(struct fc_lport
*lport
)
148 struct fcoe_port
*port
= lport_priv(lport
);
149 struct bnx2fc_interface
*interface
= port
->priv
;
150 struct bnx2fc_hba
*hba
= interface
->hba
;
151 struct bnx2fc_rport
*tgt
;
154 BNX2FC_MISC_DBG("Entered %s\n", __func__
);
155 mutex_lock(&hba
->hba_mutex
);
156 spin_lock_bh(&hba
->hba_lock
);
157 for (i
= 0; i
< BNX2FC_NUM_MAX_SESS
; i
++) {
158 tgt
= hba
->tgt_ofld_list
[i
];
160 /* Cleanup IOs belonging to requested vport */
161 if (tgt
->port
== port
) {
162 spin_unlock_bh(&hba
->hba_lock
);
163 BNX2FC_TGT_DBG(tgt
, "flush/cleanup\n");
164 bnx2fc_flush_active_ios(tgt
);
165 spin_lock_bh(&hba
->hba_lock
);
169 spin_unlock_bh(&hba
->hba_lock
);
170 mutex_unlock(&hba
->hba_mutex
);
173 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport
*tgt
,
176 struct fc_rport_priv
*rdata
= tgt
->rdata
;
177 struct fc_frame_header
*fh
;
180 fh
= fc_frame_header_get(fp
);
181 BNX2FC_TGT_DBG(tgt
, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
182 "r_ctl = 0x%x\n", rdata
->ids
.port_id
,
183 ntohs(fh
->fh_ox_id
), fh
->fh_r_ctl
);
184 if ((fh
->fh_type
== FC_TYPE_ELS
) &&
185 (fh
->fh_r_ctl
== FC_RCTL_ELS_REQ
)) {
187 switch (fc_frame_payload_op(fp
)) {
189 rc
= bnx2fc_send_adisc(tgt
, fp
);
192 rc
= bnx2fc_send_logo(tgt
, fp
);
195 rc
= bnx2fc_send_rls(tgt
, fp
);
200 } else if ((fh
->fh_type
== FC_TYPE_BLS
) &&
201 (fh
->fh_r_ctl
== FC_RCTL_BA_ABTS
))
202 BNX2FC_TGT_DBG(tgt
, "ABTS frame\n");
204 BNX2FC_TGT_DBG(tgt
, "Send L2 frame type 0x%x "
205 "rctl 0x%x thru non-offload path\n",
206 fh
->fh_type
, fh
->fh_r_ctl
);
216 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
218 * @lport: the associated local port
219 * @fp: the fc_frame to be transmitted
221 static int bnx2fc_xmit(struct fc_lport
*lport
, struct fc_frame
*fp
)
224 struct fcoe_crc_eof
*cp
;
226 struct fc_frame_header
*fh
;
227 struct bnx2fc_interface
*interface
;
228 struct bnx2fc_hba
*hba
;
229 struct fcoe_port
*port
;
231 struct bnx2fc_rport
*tgt
;
232 struct fcoe_dev_stats
*stats
;
235 unsigned int hlen
, tlen
, elen
;
238 port
= (struct fcoe_port
*)lport_priv(lport
);
239 interface
= port
->priv
;
240 hba
= interface
->hba
;
242 fh
= fc_frame_header_get(fp
);
245 if (!lport
->link_up
) {
246 BNX2FC_HBA_DBG(lport
, "bnx2fc_xmit link down\n");
251 if (unlikely(fh
->fh_r_ctl
== FC_RCTL_ELS_REQ
)) {
252 if (!interface
->ctlr
.sel_fcf
) {
253 BNX2FC_HBA_DBG(lport
, "FCF not selected yet!\n");
257 if (fcoe_ctlr_els_send(&interface
->ctlr
, lport
, skb
))
265 * Snoop the frame header to check if the frame is for
266 * an offloaded session
269 * tgt_ofld_list access is synchronized using
270 * both hba mutex and hba lock. Atleast hba mutex or
271 * hba lock needs to be held for read access.
274 spin_lock_bh(&hba
->hba_lock
);
275 tgt
= bnx2fc_tgt_lookup(port
, ntoh24(fh
->fh_d_id
));
276 if (tgt
&& (test_bit(BNX2FC_FLAG_SESSION_READY
, &tgt
->flags
))) {
277 /* This frame is for offloaded session */
278 BNX2FC_HBA_DBG(lport
, "xmit: Frame is for offloaded session "
279 "port_id = 0x%x\n", ntoh24(fh
->fh_d_id
));
280 spin_unlock_bh(&hba
->hba_lock
);
281 rc
= bnx2fc_xmit_l2_frame(tgt
, fp
);
287 spin_unlock_bh(&hba
->hba_lock
);
290 elen
= sizeof(struct ethhdr
);
291 hlen
= sizeof(struct fcoe_hdr
);
292 tlen
= sizeof(struct fcoe_crc_eof
);
293 wlen
= (skb
->len
- tlen
+ sizeof(crc
)) / FCOE_WORD_TO_BYTE
;
295 skb
->ip_summed
= CHECKSUM_NONE
;
296 crc
= fcoe_fc_crc(fp
);
298 /* copy port crc and eof to the skb buff */
299 if (skb_is_nonlinear(skb
)) {
301 if (bnx2fc_get_paged_crc_eof(skb
, tlen
)) {
305 frag
= &skb_shinfo(skb
)->frags
[skb_shinfo(skb
)->nr_frags
- 1];
306 cp
= kmap_atomic(frag
->page
, KM_SKB_DATA_SOFTIRQ
)
309 cp
= (struct fcoe_crc_eof
*)skb_put(skb
, tlen
);
312 memset(cp
, 0, sizeof(*cp
));
314 cp
->fcoe_crc32
= cpu_to_le32(~crc
);
315 if (skb_is_nonlinear(skb
)) {
316 kunmap_atomic(cp
, KM_SKB_DATA_SOFTIRQ
);
320 /* adjust skb network/transport offsets to match mac/fcoe/port */
321 skb_push(skb
, elen
+ hlen
);
322 skb_reset_mac_header(skb
);
323 skb_reset_network_header(skb
);
325 skb
->protocol
= htons(ETH_P_FCOE
);
326 skb
->dev
= interface
->netdev
;
328 /* fill up mac and fcoe headers */
330 eh
->h_proto
= htons(ETH_P_FCOE
);
331 if (interface
->ctlr
.map_dest
)
332 fc_fcoe_set_mac(eh
->h_dest
, fh
->fh_d_id
);
334 /* insert GW address */
335 memcpy(eh
->h_dest
, interface
->ctlr
.dest_addr
, ETH_ALEN
);
337 if (unlikely(interface
->ctlr
.flogi_oxid
!= FC_XID_UNKNOWN
))
338 memcpy(eh
->h_source
, interface
->ctlr
.ctl_src_addr
, ETH_ALEN
);
340 memcpy(eh
->h_source
, port
->data_src_addr
, ETH_ALEN
);
342 hp
= (struct fcoe_hdr
*)(eh
+ 1);
343 memset(hp
, 0, sizeof(*hp
));
345 FC_FCOE_ENCAPS_VER(hp
, FC_FCOE_VER
);
348 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
349 if (lport
->seq_offload
&& fr_max_payload(fp
)) {
350 skb_shinfo(skb
)->gso_type
= SKB_GSO_FCOE
;
351 skb_shinfo(skb
)->gso_size
= fr_max_payload(fp
);
353 skb_shinfo(skb
)->gso_type
= 0;
354 skb_shinfo(skb
)->gso_size
= 0;
358 stats
= per_cpu_ptr(lport
->dev_stats
, get_cpu());
360 stats
->TxWords
+= wlen
;
363 /* send down to lld */
365 if (port
->fcoe_pending_queue
.qlen
)
366 fcoe_check_wait_queue(lport
, skb
);
367 else if (fcoe_start_io(skb
))
368 fcoe_check_wait_queue(lport
, skb
);
374 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
376 * @skb: the receive socket buffer
377 * @dev: associated net device
379 * @olddev: last device
381 * This function receives the packet and builds FC frame and passes it up
383 static int bnx2fc_rcv(struct sk_buff
*skb
, struct net_device
*dev
,
384 struct packet_type
*ptype
, struct net_device
*olddev
)
386 struct fc_lport
*lport
;
387 struct bnx2fc_interface
*interface
;
388 struct fc_frame_header
*fh
;
389 struct fcoe_rcv_info
*fr
;
390 struct fcoe_percpu_s
*bg
;
393 interface
= container_of(ptype
, struct bnx2fc_interface
,
395 lport
= interface
->ctlr
.lp
;
397 if (unlikely(lport
== NULL
)) {
398 printk(KERN_ERR PFX
"bnx2fc_rcv: lport is NULL\n");
402 if (unlikely(eth_hdr(skb
)->h_proto
!= htons(ETH_P_FCOE
))) {
403 printk(KERN_ERR PFX
"bnx2fc_rcv: Wrong FC type frame\n");
408 * Check for minimum frame length, and make sure required FCoE
409 * and FC headers are pulled into the linear data area.
411 if (unlikely((skb
->len
< FCOE_MIN_FRAME
) ||
412 !pskb_may_pull(skb
, FCOE_HEADER_LEN
)))
415 skb_set_transport_header(skb
, sizeof(struct fcoe_hdr
));
416 fh
= (struct fc_frame_header
*) skb_transport_header(skb
);
418 oxid
= ntohs(fh
->fh_ox_id
);
420 fr
= fcoe_dev_from_skb(skb
);
424 spin_lock_bh(&bg
->fcoe_rx_list
.lock
);
426 __skb_queue_tail(&bg
->fcoe_rx_list
, skb
);
427 if (bg
->fcoe_rx_list
.qlen
== 1)
428 wake_up_process(bg
->thread
);
430 spin_unlock_bh(&bg
->fcoe_rx_list
.lock
);
438 static int bnx2fc_l2_rcv_thread(void *arg
)
440 struct fcoe_percpu_s
*bg
= arg
;
443 set_user_nice(current
, -20);
444 set_current_state(TASK_INTERRUPTIBLE
);
445 while (!kthread_should_stop()) {
447 spin_lock_bh(&bg
->fcoe_rx_list
.lock
);
448 while ((skb
= __skb_dequeue(&bg
->fcoe_rx_list
)) != NULL
) {
449 spin_unlock_bh(&bg
->fcoe_rx_list
.lock
);
450 bnx2fc_recv_frame(skb
);
451 spin_lock_bh(&bg
->fcoe_rx_list
.lock
);
453 __set_current_state(TASK_INTERRUPTIBLE
);
454 spin_unlock_bh(&bg
->fcoe_rx_list
.lock
);
456 __set_current_state(TASK_RUNNING
);
461 static void bnx2fc_recv_frame(struct sk_buff
*skb
)
464 struct fc_lport
*lport
;
465 struct fcoe_rcv_info
*fr
;
466 struct fcoe_dev_stats
*stats
;
467 struct fc_frame_header
*fh
;
468 struct fcoe_crc_eof crc_eof
;
470 struct fc_lport
*vn_port
;
471 struct fcoe_port
*port
;
476 fr
= fcoe_dev_from_skb(skb
);
478 if (unlikely(lport
== NULL
)) {
479 printk(KERN_ERR PFX
"Invalid lport struct\n");
484 if (skb_is_nonlinear(skb
))
486 mac
= eth_hdr(skb
)->h_source
;
487 dest_mac
= eth_hdr(skb
)->h_dest
;
489 /* Pull the header */
490 hp
= (struct fcoe_hdr
*) skb_network_header(skb
);
491 fh
= (struct fc_frame_header
*) skb_transport_header(skb
);
492 skb_pull(skb
, sizeof(struct fcoe_hdr
));
493 fr_len
= skb
->len
- sizeof(struct fcoe_crc_eof
);
495 stats
= per_cpu_ptr(lport
->dev_stats
, get_cpu());
497 stats
->RxWords
+= fr_len
/ FCOE_WORD_TO_BYTE
;
499 fp
= (struct fc_frame
*)skb
;
502 fr_sof(fp
) = hp
->fcoe_sof
;
503 if (skb_copy_bits(skb
, fr_len
, &crc_eof
, sizeof(crc_eof
))) {
508 fr_eof(fp
) = crc_eof
.fcoe_eof
;
509 fr_crc(fp
) = crc_eof
.fcoe_crc32
;
510 if (pskb_trim(skb
, fr_len
)) {
516 fh
= fc_frame_header_get(fp
);
518 vn_port
= fc_vport_id_lookup(lport
, ntoh24(fh
->fh_d_id
));
520 port
= lport_priv(vn_port
);
521 if (compare_ether_addr(port
->data_src_addr
, dest_mac
)
523 BNX2FC_HBA_DBG(lport
, "fpma mismatch\n");
529 if (fh
->fh_r_ctl
== FC_RCTL_DD_SOL_DATA
&&
530 fh
->fh_type
== FC_TYPE_FCP
) {
531 /* Drop FCP data. We dont this in L2 path */
536 if (fh
->fh_r_ctl
== FC_RCTL_ELS_REQ
&&
537 fh
->fh_type
== FC_TYPE_ELS
) {
538 switch (fc_frame_payload_op(fp
)) {
540 if (ntoh24(fh
->fh_s_id
) == FC_FID_FLOGI
) {
541 /* drop non-FIP LOGO */
550 if (fh
->fh_r_ctl
== FC_RCTL_BA_ABTS
) {
551 /* Drop incoming ABTS */
557 if (le32_to_cpu(fr_crc(fp
)) !=
558 ~crc32(~0, skb
->data
, fr_len
)) {
559 if (stats
->InvalidCRCCount
< 5)
560 printk(KERN_WARNING PFX
"dropping frame with "
562 stats
->InvalidCRCCount
++;
568 fc_exch_recv(lport
, fp
);
572 * bnx2fc_percpu_io_thread - thread per cpu for ios
574 * @arg: ptr to bnx2fc_percpu_info structure
576 int bnx2fc_percpu_io_thread(void *arg
)
578 struct bnx2fc_percpu_s
*p
= arg
;
579 struct bnx2fc_work
*work
, *tmp
;
580 LIST_HEAD(work_list
);
582 set_user_nice(current
, -20);
583 set_current_state(TASK_INTERRUPTIBLE
);
584 while (!kthread_should_stop()) {
586 spin_lock_bh(&p
->fp_work_lock
);
587 while (!list_empty(&p
->work_list
)) {
588 list_splice_init(&p
->work_list
, &work_list
);
589 spin_unlock_bh(&p
->fp_work_lock
);
591 list_for_each_entry_safe(work
, tmp
, &work_list
, list
) {
592 list_del_init(&work
->list
);
593 bnx2fc_process_cq_compl(work
->tgt
, work
->wqe
);
597 spin_lock_bh(&p
->fp_work_lock
);
599 __set_current_state(TASK_INTERRUPTIBLE
);
600 spin_unlock_bh(&p
->fp_work_lock
);
602 __set_current_state(TASK_RUNNING
);
607 static struct fc_host_statistics
*bnx2fc_get_host_stats(struct Scsi_Host
*shost
)
609 struct fc_host_statistics
*bnx2fc_stats
;
610 struct fc_lport
*lport
= shost_priv(shost
);
611 struct fcoe_port
*port
= lport_priv(lport
);
612 struct bnx2fc_interface
*interface
= port
->priv
;
613 struct bnx2fc_hba
*hba
= interface
->hba
;
614 struct fcoe_statistics_params
*fw_stats
;
617 fw_stats
= (struct fcoe_statistics_params
*)hba
->stats_buffer
;
621 bnx2fc_stats
= fc_get_host_stats(shost
);
623 init_completion(&hba
->stat_req_done
);
624 if (bnx2fc_send_stat_req(hba
))
626 rc
= wait_for_completion_timeout(&hba
->stat_req_done
, (2 * HZ
));
628 BNX2FC_HBA_DBG(lport
, "FW stat req timed out\n");
631 bnx2fc_stats
->invalid_crc_count
+= fw_stats
->rx_stat2
.fc_crc_cnt
;
632 bnx2fc_stats
->tx_frames
+= fw_stats
->tx_stat
.fcoe_tx_pkt_cnt
;
633 bnx2fc_stats
->tx_words
+= (fw_stats
->tx_stat
.fcoe_tx_byte_cnt
) / 4;
634 bnx2fc_stats
->rx_frames
+= fw_stats
->rx_stat0
.fcoe_rx_pkt_cnt
;
635 bnx2fc_stats
->rx_words
+= (fw_stats
->rx_stat0
.fcoe_rx_byte_cnt
) / 4;
637 bnx2fc_stats
->dumped_frames
= 0;
638 bnx2fc_stats
->lip_count
= 0;
639 bnx2fc_stats
->nos_count
= 0;
640 bnx2fc_stats
->loss_of_sync_count
= 0;
641 bnx2fc_stats
->loss_of_signal_count
= 0;
642 bnx2fc_stats
->prim_seq_protocol_err_count
= 0;
647 static int bnx2fc_shost_config(struct fc_lport
*lport
, struct device
*dev
)
649 struct fcoe_port
*port
= lport_priv(lport
);
650 struct bnx2fc_interface
*interface
= port
->priv
;
651 struct Scsi_Host
*shost
= lport
->host
;
654 shost
->max_cmd_len
= BNX2FC_MAX_CMD_LEN
;
655 shost
->max_lun
= BNX2FC_MAX_LUN
;
656 shost
->max_id
= BNX2FC_MAX_FCP_TGT
;
657 shost
->max_channel
= 0;
659 shost
->transportt
= bnx2fc_vport_xport_template
;
661 shost
->transportt
= bnx2fc_transport_template
;
663 /* Add the new host to SCSI-ml */
664 rc
= scsi_add_host(lport
->host
, dev
);
666 printk(KERN_ERR PFX
"Error on scsi_add_host\n");
670 fc_host_max_npiv_vports(lport
->host
) = USHRT_MAX
;
671 sprintf(fc_host_symbolic_name(lport
->host
), "%s v%s over %s",
672 BNX2FC_NAME
, BNX2FC_VERSION
,
673 interface
->netdev
->name
);
678 static void bnx2fc_link_speed_update(struct fc_lport
*lport
)
680 struct fcoe_port
*port
= lport_priv(lport
);
681 struct bnx2fc_interface
*interface
= port
->priv
;
682 struct net_device
*netdev
= interface
->netdev
;
683 struct ethtool_cmd ecmd
;
685 if (!dev_ethtool_get_settings(netdev
, &ecmd
)) {
686 lport
->link_supported_speeds
&=
687 ~(FC_PORTSPEED_1GBIT
| FC_PORTSPEED_10GBIT
);
688 if (ecmd
.supported
& (SUPPORTED_1000baseT_Half
|
689 SUPPORTED_1000baseT_Full
))
690 lport
->link_supported_speeds
|= FC_PORTSPEED_1GBIT
;
691 if (ecmd
.supported
& SUPPORTED_10000baseT_Full
)
692 lport
->link_supported_speeds
|= FC_PORTSPEED_10GBIT
;
694 switch (ethtool_cmd_speed(&ecmd
)) {
696 lport
->link_speed
= FC_PORTSPEED_1GBIT
;
699 lport
->link_speed
= FC_PORTSPEED_2GBIT
;
702 lport
->link_speed
= FC_PORTSPEED_10GBIT
;
707 static int bnx2fc_link_ok(struct fc_lport
*lport
)
709 struct fcoe_port
*port
= lport_priv(lport
);
710 struct bnx2fc_interface
*interface
= port
->priv
;
711 struct bnx2fc_hba
*hba
= interface
->hba
;
712 struct net_device
*dev
= hba
->phys_dev
;
715 if ((dev
->flags
& IFF_UP
) && netif_carrier_ok(dev
))
716 clear_bit(ADAPTER_STATE_LINK_DOWN
, &hba
->adapter_state
);
718 set_bit(ADAPTER_STATE_LINK_DOWN
, &hba
->adapter_state
);
725 * bnx2fc_get_link_state - get network link state
727 * @hba: adapter instance pointer
729 * updates adapter structure flag based on netdev state
731 void bnx2fc_get_link_state(struct bnx2fc_hba
*hba
)
733 if (test_bit(__LINK_STATE_NOCARRIER
, &hba
->phys_dev
->state
))
734 set_bit(ADAPTER_STATE_LINK_DOWN
, &hba
->adapter_state
);
736 clear_bit(ADAPTER_STATE_LINK_DOWN
, &hba
->adapter_state
);
739 static int bnx2fc_net_config(struct fc_lport
*lport
, struct net_device
*netdev
)
741 struct bnx2fc_hba
*hba
;
742 struct bnx2fc_interface
*interface
;
743 struct fcoe_port
*port
;
746 port
= lport_priv(lport
);
747 interface
= port
->priv
;
748 hba
= interface
->hba
;
750 /* require support for get_pauseparam ethtool op. */
751 if (!hba
->phys_dev
->ethtool_ops
||
752 !hba
->phys_dev
->ethtool_ops
->get_pauseparam
)
755 if (fc_set_mfs(lport
, BNX2FC_MFS
))
758 skb_queue_head_init(&port
->fcoe_pending_queue
);
759 port
->fcoe_pending_queue_active
= 0;
760 setup_timer(&port
->timer
, fcoe_queue_timer
, (unsigned long) lport
);
762 bnx2fc_link_speed_update(lport
);
765 if (fcoe_get_wwn(netdev
, &wwnn
, NETDEV_FCOE_WWNN
))
766 wwnn
= fcoe_wwn_from_mac(interface
->ctlr
.ctl_src_addr
,
768 BNX2FC_HBA_DBG(lport
, "WWNN = 0x%llx\n", wwnn
);
769 fc_set_wwnn(lport
, wwnn
);
771 if (fcoe_get_wwn(netdev
, &wwpn
, NETDEV_FCOE_WWPN
))
772 wwpn
= fcoe_wwn_from_mac(interface
->ctlr
.ctl_src_addr
,
775 BNX2FC_HBA_DBG(lport
, "WWPN = 0x%llx\n", wwpn
);
776 fc_set_wwpn(lport
, wwpn
);
782 static void bnx2fc_destroy_timer(unsigned long data
)
784 struct bnx2fc_hba
*hba
= (struct bnx2fc_hba
*)data
;
786 printk(KERN_ERR PFX
"ERROR:bnx2fc_destroy_timer - "
787 "Destroy compl not received!!\n");
788 set_bit(BNX2FC_FLAG_DESTROY_CMPL
, &hba
->flags
);
789 wake_up_interruptible(&hba
->destroy_wait
);
793 * bnx2fc_indicate_netevent - Generic netdev event handler
795 * @context: adapter structure pointer
797 * @vlan_id: vlan id - associated vlan id with this event
799 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
800 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
802 static void bnx2fc_indicate_netevent(void *context
, unsigned long event
,
805 struct bnx2fc_hba
*hba
= (struct bnx2fc_hba
*)context
;
806 struct fc_lport
*lport
;
807 struct fc_lport
*vport
;
808 struct bnx2fc_interface
*interface
, *tmp
;
809 int wait_for_upload
= 0;
810 u32 link_possible
= 1;
812 if (vlan_id
!= 0 && event
!= NETDEV_UNREGISTER
)
817 if (!test_bit(ADAPTER_STATE_UP
, &hba
->adapter_state
))
818 printk(KERN_ERR
"indicate_netevent: "\
819 "hba is not UP!!\n");
823 clear_bit(ADAPTER_STATE_GOING_DOWN
, &hba
->adapter_state
);
824 clear_bit(ADAPTER_STATE_UP
, &hba
->adapter_state
);
828 case NETDEV_GOING_DOWN
:
829 set_bit(ADAPTER_STATE_GOING_DOWN
, &hba
->adapter_state
);
836 case NETDEV_UNREGISTER
:
839 mutex_lock(&bnx2fc_dev_lock
);
840 list_for_each_entry_safe(interface
, tmp
, &if_list
, list
) {
841 if (interface
->hba
== hba
&&
842 interface
->vlan_id
== (vlan_id
& VLAN_VID_MASK
))
843 __bnx2fc_destroy(interface
);
845 mutex_unlock(&bnx2fc_dev_lock
);
849 printk(KERN_ERR PFX
"Unkonwn netevent %ld", event
);
853 mutex_lock(&bnx2fc_dev_lock
);
854 list_for_each_entry(interface
, &if_list
, list
) {
856 if (interface
->hba
!= hba
)
859 lport
= interface
->ctlr
.lp
;
860 BNX2FC_HBA_DBG(lport
, "netevent handler - event=%s %ld\n",
861 interface
->netdev
->name
, event
);
863 bnx2fc_link_speed_update(lport
);
865 if (link_possible
&& !bnx2fc_link_ok(lport
)) {
866 /* Reset max recv frame size to default */
867 fc_set_mfs(lport
, BNX2FC_MFS
);
869 * ctlr link up will only be handled during
870 * enable to avoid sending discovery solicitation
873 } else if (fcoe_ctlr_link_down(&interface
->ctlr
)) {
874 mutex_lock(&lport
->lp_mutex
);
875 list_for_each_entry(vport
, &lport
->vports
, list
)
876 fc_host_port_type(vport
->host
) =
878 mutex_unlock(&lport
->lp_mutex
);
879 fc_host_port_type(lport
->host
) = FC_PORTTYPE_UNKNOWN
;
880 per_cpu_ptr(lport
->dev_stats
,
881 get_cpu())->LinkFailureCount
++;
883 fcoe_clean_pending_queue(lport
);
887 mutex_unlock(&bnx2fc_dev_lock
);
889 if (wait_for_upload
) {
890 clear_bit(ADAPTER_STATE_READY
, &hba
->adapter_state
);
891 init_waitqueue_head(&hba
->shutdown_wait
);
892 BNX2FC_MISC_DBG("indicate_netevent "
893 "num_ofld_sess = %d\n",
895 hba
->wait_for_link_down
= 1;
896 wait_event_interruptible(hba
->shutdown_wait
,
897 (hba
->num_ofld_sess
== 0));
898 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
900 hba
->wait_for_link_down
= 0;
902 if (signal_pending(current
))
903 flush_signals(current
);
907 static int bnx2fc_libfc_config(struct fc_lport
*lport
)
910 /* Set the function pointers set by bnx2fc driver */
911 memcpy(&lport
->tt
, &bnx2fc_libfc_fcn_templ
,
912 sizeof(struct libfc_function_template
));
913 fc_elsct_init(lport
);
915 fc_rport_init(lport
);
920 static int bnx2fc_em_config(struct fc_lport
*lport
)
922 if (!fc_exch_mgr_alloc(lport
, FC_CLASS_3
, FCOE_MIN_XID
,
923 FCOE_MAX_XID
, NULL
)) {
924 printk(KERN_ERR PFX
"em_config:fc_exch_mgr_alloc failed\n");
931 static int bnx2fc_lport_config(struct fc_lport
*lport
)
935 lport
->max_retry_count
= 3;
936 lport
->max_rport_retry_count
= 3;
937 lport
->e_d_tov
= 2 * 1000;
938 lport
->r_a_tov
= 10 * 1000;
940 lport
->service_params
= (FCP_SPPF_INIT_FCN
| FCP_SPPF_RD_XRDY_DIS
|
941 FCP_SPPF_RETRY
| FCP_SPPF_CONF_COMPL
);
942 lport
->does_npiv
= 1;
944 memset(&lport
->rnid_gen
, 0, sizeof(struct fc_els_rnid_gen
));
945 lport
->rnid_gen
.rnid_atype
= BNX2FC_RNID_HBA
;
947 /* alloc stats structure */
948 if (fc_lport_init_stats(lport
))
951 /* Finish fc_lport configuration */
952 fc_lport_config(lport
);
958 * bnx2fc_fip_recv - handle a received FIP frame.
960 * @skb: the received skb
961 * @dev: associated &net_device
962 * @ptype: the &packet_type structure which was used to register this handler.
963 * @orig_dev: original receive &net_device, in case @ dev is a bond.
965 * Returns: 0 for success
967 static int bnx2fc_fip_recv(struct sk_buff
*skb
, struct net_device
*dev
,
968 struct packet_type
*ptype
,
969 struct net_device
*orig_dev
)
971 struct bnx2fc_interface
*interface
;
972 interface
= container_of(ptype
, struct bnx2fc_interface
,
974 fcoe_ctlr_recv(&interface
->ctlr
, skb
);
979 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
981 * @fip: FCoE controller.
982 * @old: Unicast MAC address to delete if the MAC is non-zero.
983 * @new: Unicast MAC address to add.
985 * Remove any previously-set unicast MAC filter.
986 * Add secondary FCoE MAC address filter for our OUI.
988 static void bnx2fc_update_src_mac(struct fc_lport
*lport
, u8
*addr
)
990 struct fcoe_port
*port
= lport_priv(lport
);
992 memcpy(port
->data_src_addr
, addr
, ETH_ALEN
);
996 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1000 static u8
*bnx2fc_get_src_mac(struct fc_lport
*lport
)
1002 struct fcoe_port
*port
;
1004 port
= (struct fcoe_port
*)lport_priv(lport
);
1005 return port
->data_src_addr
;
1009 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1011 * @fip: FCoE controller.
1014 static void bnx2fc_fip_send(struct fcoe_ctlr
*fip
, struct sk_buff
*skb
)
1016 skb
->dev
= bnx2fc_from_ctlr(fip
)->netdev
;
1017 dev_queue_xmit(skb
);
1020 static int bnx2fc_vport_create(struct fc_vport
*vport
, bool disabled
)
1022 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1023 struct fc_lport
*n_port
= shost_priv(shost
);
1024 struct fcoe_port
*port
= lport_priv(n_port
);
1025 struct bnx2fc_interface
*interface
= port
->priv
;
1026 struct net_device
*netdev
= interface
->netdev
;
1027 struct fc_lport
*vn_port
;
1031 rc
= fcoe_validate_vport_create(vport
);
1033 fcoe_wwn_to_str(vport
->port_name
, buf
, sizeof(buf
));
1034 printk(KERN_ERR PFX
"Failed to create vport, "
1035 "WWPN (0x%s) already exists\n",
1040 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE
, &interface
->hba
->flags
)) {
1041 printk(KERN_ERR PFX
"vn ports cannot be created on"
1042 "this interface\n");
1045 mutex_lock(&bnx2fc_dev_lock
);
1046 vn_port
= bnx2fc_if_create(interface
, &vport
->dev
, 1);
1047 mutex_unlock(&bnx2fc_dev_lock
);
1049 if (IS_ERR(vn_port
)) {
1050 printk(KERN_ERR PFX
"bnx2fc_vport_create (%s) failed\n",
1056 fc_vport_set_state(vport
, FC_VPORT_DISABLED
);
1058 vn_port
->boot_time
= jiffies
;
1059 fc_lport_init(vn_port
);
1060 fc_fabric_login(vn_port
);
1061 fc_vport_setlink(vn_port
);
1066 static void bnx2fc_free_vport(struct bnx2fc_hba
*hba
, struct fc_lport
*lport
)
1068 struct bnx2fc_lport
*blport
, *tmp
;
1070 spin_lock_bh(&hba
->hba_lock
);
1071 list_for_each_entry_safe(blport
, tmp
, &hba
->vports
, list
) {
1072 if (blport
->lport
== lport
) {
1073 list_del(&blport
->list
);
1077 spin_unlock_bh(&hba
->hba_lock
);
1080 static int bnx2fc_vport_destroy(struct fc_vport
*vport
)
1082 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1083 struct fc_lport
*n_port
= shost_priv(shost
);
1084 struct fc_lport
*vn_port
= vport
->dd_data
;
1085 struct fcoe_port
*port
= lport_priv(vn_port
);
1086 struct bnx2fc_interface
*interface
= port
->priv
;
1087 struct fc_lport
*v_port
;
1090 mutex_lock(&n_port
->lp_mutex
);
1091 list_for_each_entry(v_port
, &n_port
->vports
, list
)
1092 if (v_port
->vport
== vport
) {
1098 mutex_unlock(&n_port
->lp_mutex
);
1101 list_del(&vn_port
->list
);
1102 mutex_unlock(&n_port
->lp_mutex
);
1103 bnx2fc_free_vport(interface
->hba
, port
->lport
);
1104 bnx2fc_port_shutdown(port
->lport
);
1105 bnx2fc_interface_put(interface
);
1106 queue_work(bnx2fc_wq
, &port
->destroy_work
);
1110 static int bnx2fc_vport_disable(struct fc_vport
*vport
, bool disable
)
1112 struct fc_lport
*lport
= vport
->dd_data
;
1115 fc_vport_set_state(vport
, FC_VPORT_DISABLED
);
1116 fc_fabric_logoff(lport
);
1118 lport
->boot_time
= jiffies
;
1119 fc_fabric_login(lport
);
1120 fc_vport_setlink(lport
);
1126 static int bnx2fc_interface_setup(struct bnx2fc_interface
*interface
)
1128 struct net_device
*netdev
= interface
->netdev
;
1129 struct net_device
*physdev
= interface
->hba
->phys_dev
;
1130 struct netdev_hw_addr
*ha
;
1131 int sel_san_mac
= 0;
1133 /* setup Source MAC Address */
1135 for_each_dev_addr(physdev
, ha
) {
1136 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1138 printk(KERN_INFO
"%2x:%2x:%2x:%2x:%2x:%2x\n", ha
->addr
[0],
1139 ha
->addr
[1], ha
->addr
[2], ha
->addr
[3],
1140 ha
->addr
[4], ha
->addr
[5]);
1142 if ((ha
->type
== NETDEV_HW_ADDR_T_SAN
) &&
1143 (is_valid_ether_addr(ha
->addr
))) {
1144 memcpy(interface
->ctlr
.ctl_src_addr
, ha
->addr
,
1147 BNX2FC_MISC_DBG("Found SAN MAC\n");
1155 interface
->fip_packet_type
.func
= bnx2fc_fip_recv
;
1156 interface
->fip_packet_type
.type
= htons(ETH_P_FIP
);
1157 interface
->fip_packet_type
.dev
= netdev
;
1158 dev_add_pack(&interface
->fip_packet_type
);
1160 interface
->fcoe_packet_type
.func
= bnx2fc_rcv
;
1161 interface
->fcoe_packet_type
.type
= __constant_htons(ETH_P_FCOE
);
1162 interface
->fcoe_packet_type
.dev
= netdev
;
1163 dev_add_pack(&interface
->fcoe_packet_type
);
1168 static int bnx2fc_attach_transport(void)
1170 bnx2fc_transport_template
=
1171 fc_attach_transport(&bnx2fc_transport_function
);
1173 if (bnx2fc_transport_template
== NULL
) {
1174 printk(KERN_ERR PFX
"Failed to attach FC transport\n");
1178 bnx2fc_vport_xport_template
=
1179 fc_attach_transport(&bnx2fc_vport_xport_function
);
1180 if (bnx2fc_vport_xport_template
== NULL
) {
1182 "Failed to attach FC transport for vport\n");
1183 fc_release_transport(bnx2fc_transport_template
);
1184 bnx2fc_transport_template
= NULL
;
1189 static void bnx2fc_release_transport(void)
1191 fc_release_transport(bnx2fc_transport_template
);
1192 fc_release_transport(bnx2fc_vport_xport_template
);
1193 bnx2fc_transport_template
= NULL
;
1194 bnx2fc_vport_xport_template
= NULL
;
1197 static void bnx2fc_interface_release(struct kref
*kref
)
1199 struct bnx2fc_interface
*interface
;
1200 struct net_device
*netdev
;
1202 interface
= container_of(kref
, struct bnx2fc_interface
, kref
);
1203 BNX2FC_MISC_DBG("Interface is being released\n");
1205 netdev
= interface
->netdev
;
1207 /* tear-down FIP controller */
1208 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE
, &interface
->if_flags
))
1209 fcoe_ctlr_destroy(&interface
->ctlr
);
1214 module_put(THIS_MODULE
);
1217 static inline void bnx2fc_interface_get(struct bnx2fc_interface
*interface
)
1219 kref_get(&interface
->kref
);
1222 static inline void bnx2fc_interface_put(struct bnx2fc_interface
*interface
)
1224 kref_put(&interface
->kref
, bnx2fc_interface_release
);
1226 static void bnx2fc_hba_destroy(struct bnx2fc_hba
*hba
)
1228 /* Free the command manager */
1230 bnx2fc_cmd_mgr_free(hba
->cmd_mgr
);
1231 hba
->cmd_mgr
= NULL
;
1233 kfree(hba
->tgt_ofld_list
);
1234 bnx2fc_unbind_pcidev(hba
);
1239 * bnx2fc_hba_create - create a new bnx2fc hba
1241 * @cnic: pointer to cnic device
1243 * Creates a new FCoE hba on the given device.
1246 static struct bnx2fc_hba
*bnx2fc_hba_create(struct cnic_dev
*cnic
)
1248 struct bnx2fc_hba
*hba
;
1251 hba
= kzalloc(sizeof(*hba
), GFP_KERNEL
);
1253 printk(KERN_ERR PFX
"Unable to allocate hba structure\n");
1256 spin_lock_init(&hba
->hba_lock
);
1257 mutex_init(&hba
->hba_mutex
);
1260 rc
= bnx2fc_bind_pcidev(hba
);
1262 printk(KERN_ERR PFX
"create_adapter: bind error\n");
1265 hba
->phys_dev
= cnic
->netdev
;
1266 hba
->next_conn_id
= 0;
1268 hba
->tgt_ofld_list
=
1269 kzalloc(sizeof(struct bnx2fc_rport
*) * BNX2FC_NUM_MAX_SESS
,
1271 if (!hba
->tgt_ofld_list
) {
1272 printk(KERN_ERR PFX
"Unable to allocate tgt offload list\n");
1276 hba
->num_ofld_sess
= 0;
1278 hba
->cmd_mgr
= bnx2fc_cmd_mgr_alloc(hba
, BNX2FC_MIN_XID
,
1280 if (!hba
->cmd_mgr
) {
1281 printk(KERN_ERR PFX
"em_config:bnx2fc_cmd_mgr_alloc failed\n");
1285 init_waitqueue_head(&hba
->shutdown_wait
);
1286 init_waitqueue_head(&hba
->destroy_wait
);
1287 INIT_LIST_HEAD(&hba
->vports
);
1292 kfree(hba
->tgt_ofld_list
);
1294 bnx2fc_unbind_pcidev(hba
);
1300 struct bnx2fc_interface
*bnx2fc_interface_create(struct bnx2fc_hba
*hba
,
1301 struct net_device
*netdev
,
1302 enum fip_state fip_mode
)
1304 struct bnx2fc_interface
*interface
;
1307 interface
= kzalloc(sizeof(*interface
), GFP_KERNEL
);
1309 printk(KERN_ERR PFX
"Unable to allocate interface structure\n");
1313 kref_init(&interface
->kref
);
1314 interface
->hba
= hba
;
1315 interface
->netdev
= netdev
;
1317 /* Initialize FIP */
1318 fcoe_ctlr_init(&interface
->ctlr
, fip_mode
);
1319 interface
->ctlr
.send
= bnx2fc_fip_send
;
1320 interface
->ctlr
.update_mac
= bnx2fc_update_src_mac
;
1321 interface
->ctlr
.get_src_addr
= bnx2fc_get_src_mac
;
1322 set_bit(BNX2FC_CTLR_INIT_DONE
, &interface
->if_flags
);
1324 rc
= bnx2fc_interface_setup(interface
);
1328 fcoe_ctlr_destroy(&interface
->ctlr
);
1335 * bnx2fc_if_create - Create FCoE instance on a given interface
1337 * @interface: FCoE interface to create a local port on
1338 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1339 * @npiv: Indicates if the port is vport or not
1341 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1343 * Returns: Allocated fc_lport or an error pointer
1345 static struct fc_lport
*bnx2fc_if_create(struct bnx2fc_interface
*interface
,
1346 struct device
*parent
, int npiv
)
1348 struct fc_lport
*lport
, *n_port
;
1349 struct fcoe_port
*port
;
1350 struct Scsi_Host
*shost
;
1351 struct fc_vport
*vport
= dev_to_vport(parent
);
1352 struct bnx2fc_lport
*blport
;
1353 struct bnx2fc_hba
*hba
;
1356 blport
= kzalloc(sizeof(struct bnx2fc_lport
), GFP_KERNEL
);
1358 BNX2FC_HBA_DBG(interface
->ctlr
.lp
, "Unable to alloc blport\n");
1362 /* Allocate Scsi_Host structure */
1364 lport
= libfc_host_alloc(&bnx2fc_shost_template
, sizeof(*port
));
1366 lport
= libfc_vport_create(vport
, sizeof(*port
));
1369 printk(KERN_ERR PFX
"could not allocate scsi host structure\n");
1372 shost
= lport
->host
;
1373 port
= lport_priv(lport
);
1374 port
->lport
= lport
;
1375 port
->priv
= interface
;
1376 INIT_WORK(&port
->destroy_work
, bnx2fc_destroy_work
);
1378 /* Configure fcoe_port */
1379 rc
= bnx2fc_lport_config(lport
);
1384 printk(KERN_ERR PFX
"Setting vport names, 0x%llX 0x%llX\n",
1385 vport
->node_name
, vport
->port_name
);
1386 fc_set_wwnn(lport
, vport
->node_name
);
1387 fc_set_wwpn(lport
, vport
->port_name
);
1389 /* Configure netdev and networking properties of the lport */
1390 rc
= bnx2fc_net_config(lport
, interface
->netdev
);
1392 printk(KERN_ERR PFX
"Error on bnx2fc_net_config\n");
1396 rc
= bnx2fc_shost_config(lport
, parent
);
1398 printk(KERN_ERR PFX
"Couldnt configure shost for %s\n",
1399 interface
->netdev
->name
);
1403 /* Initialize the libfc library */
1404 rc
= bnx2fc_libfc_config(lport
);
1406 printk(KERN_ERR PFX
"Couldnt configure libfc\n");
1409 fc_host_port_type(lport
->host
) = FC_PORTTYPE_UNKNOWN
;
1411 /* Allocate exchange manager */
1413 rc
= bnx2fc_em_config(lport
);
1415 shost
= vport_to_shost(vport
);
1416 n_port
= shost_priv(shost
);
1417 rc
= fc_exch_mgr_list_clone(n_port
, lport
);
1421 printk(KERN_ERR PFX
"Error on bnx2fc_em_config\n");
1425 bnx2fc_interface_get(interface
);
1427 hba
= interface
->hba
;
1428 spin_lock_bh(&hba
->hba_lock
);
1429 blport
->lport
= lport
;
1430 list_add_tail(&blport
->list
, &hba
->vports
);
1431 spin_unlock_bh(&hba
->hba_lock
);
1436 scsi_remove_host(shost
);
1438 scsi_host_put(lport
->host
);
1444 static void bnx2fc_net_cleanup(struct bnx2fc_interface
*interface
)
1446 /* Dont listen for Ethernet packets anymore */
1447 __dev_remove_pack(&interface
->fcoe_packet_type
);
1448 __dev_remove_pack(&interface
->fip_packet_type
);
1452 static void bnx2fc_interface_cleanup(struct bnx2fc_interface
*interface
)
1454 struct fc_lport
*lport
= interface
->ctlr
.lp
;
1455 struct fcoe_port
*port
= lport_priv(lport
);
1456 struct bnx2fc_hba
*hba
= interface
->hba
;
1458 /* Stop the transmit retry timer */
1459 del_timer_sync(&port
->timer
);
1461 /* Free existing transmit skbs */
1462 fcoe_clean_pending_queue(lport
);
1464 bnx2fc_net_cleanup(interface
);
1466 bnx2fc_free_vport(hba
, lport
);
1469 static void bnx2fc_if_destroy(struct fc_lport
*lport
)
1472 /* Free queued packets for the receive thread */
1473 bnx2fc_clean_rx_queue(lport
);
1475 /* Detach from scsi-ml */
1476 fc_remove_host(lport
->host
);
1477 scsi_remove_host(lport
->host
);
1480 * Note that only the physical lport will have the exchange manager.
1481 * for vports, this function is NOP
1483 fc_exch_mgr_free(lport
);
1485 /* Free memory used by statistical counters */
1486 fc_lport_free_stats(lport
);
1488 /* Release Scsi_Host */
1489 scsi_host_put(lport
->host
);
1492 static void __bnx2fc_destroy(struct bnx2fc_interface
*interface
)
1494 struct fc_lport
*lport
= interface
->ctlr
.lp
;
1495 struct fcoe_port
*port
= lport_priv(lport
);
1497 bnx2fc_interface_cleanup(interface
);
1498 bnx2fc_stop(interface
);
1499 list_del(&interface
->list
);
1500 bnx2fc_interface_put(interface
);
1501 queue_work(bnx2fc_wq
, &port
->destroy_work
);
1505 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1507 * @buffer: The name of the Ethernet interface to be destroyed
1508 * @kp: The associated kernel parameter
1510 * Called from sysfs.
1512 * Returns: 0 for success
1514 static int bnx2fc_destroy(struct net_device
*netdev
)
1516 struct bnx2fc_interface
*interface
= NULL
;
1520 mutex_lock(&bnx2fc_dev_lock
);
1522 interface
= bnx2fc_interface_lookup(netdev
);
1523 if (!interface
|| !interface
->ctlr
.lp
) {
1525 printk(KERN_ERR PFX
"bnx2fc_destroy: interface or lport not found\n");
1530 destroy_workqueue(interface
->timer_work_queue
);
1531 __bnx2fc_destroy(interface
);
1534 mutex_unlock(&bnx2fc_dev_lock
);
1539 static void bnx2fc_destroy_work(struct work_struct
*work
)
1541 struct fcoe_port
*port
;
1542 struct fc_lport
*lport
;
1544 port
= container_of(work
, struct fcoe_port
, destroy_work
);
1545 lport
= port
->lport
;
1547 BNX2FC_HBA_DBG(lport
, "Entered bnx2fc_destroy_work\n");
1549 bnx2fc_if_destroy(lport
);
1552 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba
*hba
)
1554 bnx2fc_free_fw_resc(hba
);
1555 bnx2fc_free_task_ctx(hba
);
1559 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1562 * @hba: Adapter instance
1564 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba
*hba
)
1566 if (bnx2fc_setup_task_ctx(hba
))
1569 if (bnx2fc_setup_fw_resc(hba
))
1574 bnx2fc_unbind_adapter_devices(hba
);
1578 static int bnx2fc_bind_pcidev(struct bnx2fc_hba
*hba
)
1580 struct cnic_dev
*cnic
;
1583 printk(KERN_ERR PFX
"cnic is NULL\n");
1587 hba
->pcidev
= cnic
->pcidev
;
1589 pci_dev_get(hba
->pcidev
);
1594 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba
*hba
)
1597 pci_dev_put(hba
->pcidev
);
1604 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1606 * @handle: transport handle pointing to adapter struture
1608 * This function maps adapter structure to pcidev structure and initiates
1609 * firmware handshake to enable/initialize on-chip FCoE components.
1610 * This bnx2fc - cnic interface api callback is used after following
1611 * conditions are met -
1612 * a) underlying network interface is up (marked by event NETDEV_UP
1614 * b) bnx2fc adatper structure is registered.
1616 static void bnx2fc_ulp_start(void *handle
)
1618 struct bnx2fc_hba
*hba
= handle
;
1619 struct bnx2fc_interface
*interface
;
1620 struct fc_lport
*lport
;
1622 mutex_lock(&bnx2fc_dev_lock
);
1624 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE
, &hba
->flags
))
1625 bnx2fc_fw_init(hba
);
1627 BNX2FC_MISC_DBG("bnx2fc started.\n");
1629 list_for_each_entry(interface
, &if_list
, list
) {
1630 if (interface
->hba
== hba
) {
1631 lport
= interface
->ctlr
.lp
;
1632 /* Kick off Fabric discovery*/
1633 printk(KERN_ERR PFX
"ulp_init: start discovery\n");
1634 lport
->tt
.frame_send
= bnx2fc_xmit
;
1635 bnx2fc_start_disc(interface
);
1639 mutex_unlock(&bnx2fc_dev_lock
);
1642 static void bnx2fc_port_shutdown(struct fc_lport
*lport
)
1644 BNX2FC_MISC_DBG("Entered %s\n", __func__
);
1645 fc_fabric_logoff(lport
);
1646 fc_lport_destroy(lport
);
1649 static void bnx2fc_stop(struct bnx2fc_interface
*interface
)
1651 struct fc_lport
*lport
;
1652 struct fc_lport
*vport
;
1654 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE
, &interface
->hba
->flags
))
1657 lport
= interface
->ctlr
.lp
;
1658 bnx2fc_port_shutdown(lport
);
1660 mutex_lock(&lport
->lp_mutex
);
1661 list_for_each_entry(vport
, &lport
->vports
, list
)
1662 fc_host_port_type(vport
->host
) =
1663 FC_PORTTYPE_UNKNOWN
;
1664 mutex_unlock(&lport
->lp_mutex
);
1665 fc_host_port_type(lport
->host
) = FC_PORTTYPE_UNKNOWN
;
1666 fcoe_ctlr_link_down(&interface
->ctlr
);
1667 fcoe_clean_pending_queue(lport
);
1670 static int bnx2fc_fw_init(struct bnx2fc_hba
*hba
)
1672 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1676 rc
= bnx2fc_bind_adapter_devices(hba
);
1678 printk(KERN_ALERT PFX
1679 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc
);
1683 rc
= bnx2fc_send_fw_fcoe_init_msg(hba
);
1685 printk(KERN_ALERT PFX
1686 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc
);
1691 * Wait until the adapter init message is complete, and adapter
1694 while (!test_bit(ADAPTER_STATE_UP
, &hba
->adapter_state
) && i
--)
1695 msleep(BNX2FC_INIT_POLL_TIME
);
1697 if (!test_bit(ADAPTER_STATE_UP
, &hba
->adapter_state
)) {
1698 printk(KERN_ERR PFX
"bnx2fc_start: %s failed to initialize. "
1700 hba
->cnic
->netdev
->name
);
1706 set_bit(BNX2FC_FLAG_FW_INIT_DONE
, &hba
->flags
);
1710 bnx2fc_unbind_adapter_devices(hba
);
1715 static void bnx2fc_fw_destroy(struct bnx2fc_hba
*hba
)
1717 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE
, &hba
->flags
)) {
1718 if (bnx2fc_send_fw_fcoe_destroy_msg(hba
) == 0) {
1719 init_timer(&hba
->destroy_timer
);
1720 hba
->destroy_timer
.expires
= BNX2FC_FW_TIMEOUT
+
1722 hba
->destroy_timer
.function
= bnx2fc_destroy_timer
;
1723 hba
->destroy_timer
.data
= (unsigned long)hba
;
1724 add_timer(&hba
->destroy_timer
);
1725 wait_event_interruptible(hba
->destroy_wait
,
1726 test_bit(BNX2FC_FLAG_DESTROY_CMPL
,
1728 clear_bit(BNX2FC_FLAG_DESTROY_CMPL
, &hba
->flags
);
1729 /* This should never happen */
1730 if (signal_pending(current
))
1731 flush_signals(current
);
1733 del_timer_sync(&hba
->destroy_timer
);
1735 bnx2fc_unbind_adapter_devices(hba
);
1740 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1742 * @handle: transport handle pointing to adapter structure
1744 * Driver checks if adapter is already in shutdown mode, if not start
1745 * the shutdown process.
1747 static void bnx2fc_ulp_stop(void *handle
)
1749 struct bnx2fc_hba
*hba
= handle
;
1750 struct bnx2fc_interface
*interface
;
1752 printk(KERN_ERR
"ULP_STOP\n");
1754 mutex_lock(&bnx2fc_dev_lock
);
1755 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE
, &hba
->flags
))
1757 list_for_each_entry(interface
, &if_list
, list
) {
1758 if (interface
->hba
== hba
)
1759 bnx2fc_stop(interface
);
1761 BUG_ON(hba
->num_ofld_sess
!= 0);
1763 mutex_lock(&hba
->hba_mutex
);
1764 clear_bit(ADAPTER_STATE_UP
, &hba
->adapter_state
);
1765 clear_bit(ADAPTER_STATE_GOING_DOWN
,
1766 &hba
->adapter_state
);
1768 clear_bit(ADAPTER_STATE_READY
, &hba
->adapter_state
);
1769 mutex_unlock(&hba
->hba_mutex
);
1771 bnx2fc_fw_destroy(hba
);
1773 mutex_unlock(&bnx2fc_dev_lock
);
1776 static void bnx2fc_start_disc(struct bnx2fc_interface
*interface
)
1778 struct fc_lport
*lport
;
1781 BNX2FC_MISC_DBG("Entered %s\n", __func__
);
1782 /* Kick off FIP/FLOGI */
1783 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE
, &interface
->hba
->flags
)) {
1784 printk(KERN_ERR PFX
"Init not done yet\n");
1788 lport
= interface
->ctlr
.lp
;
1789 BNX2FC_HBA_DBG(lport
, "calling fc_fabric_login\n");
1791 if (!bnx2fc_link_ok(lport
) && interface
->enabled
) {
1792 BNX2FC_HBA_DBG(lport
, "ctlr_link_up\n");
1793 fcoe_ctlr_link_up(&interface
->ctlr
);
1794 fc_host_port_type(lport
->host
) = FC_PORTTYPE_NPORT
;
1795 set_bit(ADAPTER_STATE_READY
, &interface
->hba
->adapter_state
);
1798 /* wait for the FCF to be selected before issuing FLOGI */
1799 while (!interface
->ctlr
.sel_fcf
) {
1801 /* give up after 3 secs */
1802 if (++wait_cnt
> 12)
1806 /* Reset max receive frame size to default */
1807 if (fc_set_mfs(lport
, BNX2FC_MFS
))
1810 fc_lport_init(lport
);
1811 fc_fabric_login(lport
);
1816 * bnx2fc_ulp_init - Initialize an adapter instance
1818 * @dev : cnic device handle
1819 * Called from cnic_register_driver() context to initialize all
1820 * enumerated cnic devices. This routine allocates adapter structure
1821 * and other device specific resources.
1823 static void bnx2fc_ulp_init(struct cnic_dev
*dev
)
1825 struct bnx2fc_hba
*hba
;
1828 BNX2FC_MISC_DBG("Entered %s\n", __func__
);
1829 /* bnx2fc works only when bnx2x is loaded */
1830 if (!test_bit(CNIC_F_BNX2X_CLASS
, &dev
->flags
) ||
1831 (dev
->max_fcoe_conn
== 0)) {
1832 printk(KERN_ERR PFX
"bnx2fc FCoE not supported on %s,"
1833 " flags: %lx fcoe_conn: %d\n",
1834 dev
->netdev
->name
, dev
->flags
, dev
->max_fcoe_conn
);
1838 hba
= bnx2fc_hba_create(dev
);
1840 printk(KERN_ERR PFX
"hba initialization failed\n");
1844 /* Add HBA to the adapter list */
1845 mutex_lock(&bnx2fc_dev_lock
);
1846 list_add_tail(&hba
->list
, &adapter_list
);
1848 mutex_unlock(&bnx2fc_dev_lock
);
1850 clear_bit(BNX2FC_CNIC_REGISTERED
, &hba
->reg_with_cnic
);
1851 rc
= dev
->register_device(dev
, CNIC_ULP_FCOE
,
1854 printk(KERN_ERR PFX
"register_device failed, rc = %d\n", rc
);
1856 set_bit(BNX2FC_CNIC_REGISTERED
, &hba
->reg_with_cnic
);
1860 static int bnx2fc_disable(struct net_device
*netdev
)
1862 struct bnx2fc_interface
*interface
;
1866 mutex_lock(&bnx2fc_dev_lock
);
1868 interface
= bnx2fc_interface_lookup(netdev
);
1869 if (!interface
|| !interface
->ctlr
.lp
) {
1871 printk(KERN_ERR PFX
"bnx2fc_disable: interface or lport not found\n");
1873 interface
->enabled
= false;
1874 fcoe_ctlr_link_down(&interface
->ctlr
);
1875 fcoe_clean_pending_queue(interface
->ctlr
.lp
);
1878 mutex_unlock(&bnx2fc_dev_lock
);
1884 static int bnx2fc_enable(struct net_device
*netdev
)
1886 struct bnx2fc_interface
*interface
;
1890 mutex_lock(&bnx2fc_dev_lock
);
1892 interface
= bnx2fc_interface_lookup(netdev
);
1893 if (!interface
|| !interface
->ctlr
.lp
) {
1895 printk(KERN_ERR PFX
"bnx2fc_enable: interface or lport not found\n");
1896 } else if (!bnx2fc_link_ok(interface
->ctlr
.lp
)) {
1897 fcoe_ctlr_link_up(&interface
->ctlr
);
1898 interface
->enabled
= true;
1901 mutex_unlock(&bnx2fc_dev_lock
);
1907 * bnx2fc_create - Create bnx2fc FCoE interface
1909 * @buffer: The name of Ethernet interface to create on
1910 * @kp: The associated kernel param
1912 * Called from sysfs.
1914 * Returns: 0 for success
1916 static int bnx2fc_create(struct net_device
*netdev
, enum fip_state fip_mode
)
1918 struct bnx2fc_interface
*interface
;
1919 struct bnx2fc_hba
*hba
;
1920 struct net_device
*phys_dev
;
1921 struct fc_lport
*lport
;
1922 struct ethtool_drvinfo drvinfo
;
1926 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
1927 if (fip_mode
!= FIP_MODE_FABRIC
) {
1928 printk(KERN_ERR
"fip mode not FABRIC\n");
1934 mutex_lock(&bnx2fc_dev_lock
);
1936 if (!try_module_get(THIS_MODULE
)) {
1941 /* obtain physical netdev */
1942 if (netdev
->priv_flags
& IFF_802_1Q_VLAN
) {
1943 phys_dev
= vlan_dev_real_dev(netdev
);
1944 vlan_id
= vlan_dev_vlan_id(netdev
);
1946 printk(KERN_ERR PFX
"Not a vlan device\n");
1950 /* verify if the physical device is a netxtreme2 device */
1951 if (phys_dev
->ethtool_ops
&& phys_dev
->ethtool_ops
->get_drvinfo
) {
1952 memset(&drvinfo
, 0, sizeof(drvinfo
));
1953 phys_dev
->ethtool_ops
->get_drvinfo(phys_dev
, &drvinfo
);
1954 if (strncmp(drvinfo
.driver
, "bnx2x", strlen("bnx2x"))) {
1955 printk(KERN_ERR PFX
"Not a netxtreme2 device\n");
1960 printk(KERN_ERR PFX
"unable to obtain drv_info\n");
1965 /* obtain interface and initialize rest of the structure */
1966 hba
= bnx2fc_hba_lookup(phys_dev
);
1969 printk(KERN_ERR PFX
"bnx2fc_create: hba not found\n");
1973 if (bnx2fc_interface_lookup(netdev
)) {
1978 interface
= bnx2fc_interface_create(hba
, netdev
, fip_mode
);
1980 printk(KERN_ERR PFX
"bnx2fc_interface_create failed\n");
1984 interface
->vlan_id
= vlan_id
;
1985 interface
->vlan_enabled
= 1;
1987 interface
->timer_work_queue
=
1988 create_singlethread_workqueue("bnx2fc_timer_wq");
1989 if (!interface
->timer_work_queue
) {
1990 printk(KERN_ERR PFX
"ulp_init could not create timer_wq\n");
1995 lport
= bnx2fc_if_create(interface
, &interface
->hba
->pcidev
->dev
, 0);
1997 printk(KERN_ERR PFX
"Failed to create interface (%s)\n",
2003 /* Add interface to if_list */
2004 list_add_tail(&interface
->list
, &if_list
);
2006 lport
->boot_time
= jiffies
;
2008 /* Make this master N_port */
2009 interface
->ctlr
.lp
= lport
;
2011 if (!bnx2fc_link_ok(lport
)) {
2012 fcoe_ctlr_link_up(&interface
->ctlr
);
2013 fc_host_port_type(lport
->host
) = FC_PORTTYPE_NPORT
;
2014 set_bit(ADAPTER_STATE_READY
, &interface
->hba
->adapter_state
);
2017 BNX2FC_HBA_DBG(lport
, "create: START DISC\n");
2018 bnx2fc_start_disc(interface
);
2019 interface
->enabled
= true;
2021 * Release from kref_init in bnx2fc_interface_setup, on success
2022 * lport should be holding a reference taken in bnx2fc_if_create
2024 bnx2fc_interface_put(interface
);
2025 /* put netdev that was held while calling dev_get_by_name */
2026 mutex_unlock(&bnx2fc_dev_lock
);
2031 destroy_workqueue(interface
->timer_work_queue
);
2033 bnx2fc_net_cleanup(interface
);
2034 bnx2fc_interface_put(interface
);
2036 module_put(THIS_MODULE
);
2038 mutex_unlock(&bnx2fc_dev_lock
);
2044 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2046 * @cnic: Pointer to cnic device instance
2049 static struct bnx2fc_hba
*bnx2fc_find_hba_for_cnic(struct cnic_dev
*cnic
)
2051 struct list_head
*list
;
2052 struct list_head
*temp
;
2053 struct bnx2fc_hba
*hba
;
2055 /* Called with bnx2fc_dev_lock held */
2056 list_for_each_safe(list
, temp
, &adapter_list
) {
2057 hba
= (struct bnx2fc_hba
*)list
;
2058 if (hba
->cnic
== cnic
)
2064 static struct bnx2fc_interface
*bnx2fc_interface_lookup(struct net_device
2067 struct bnx2fc_interface
*interface
;
2069 /* Called with bnx2fc_dev_lock held */
2070 list_for_each_entry(interface
, &if_list
, list
) {
2071 if (interface
->netdev
== netdev
)
2077 static struct bnx2fc_hba
*bnx2fc_hba_lookup(struct net_device
2080 struct bnx2fc_hba
*hba
;
2082 /* Called with bnx2fc_dev_lock held */
2083 list_for_each_entry(hba
, &adapter_list
, list
) {
2084 if (hba
->phys_dev
== phys_dev
)
2087 printk(KERN_ERR PFX
"adapter_lookup: hba NULL\n");
2092 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2094 * @dev cnic device handle
2096 static void bnx2fc_ulp_exit(struct cnic_dev
*dev
)
2098 struct bnx2fc_hba
*hba
;
2099 struct bnx2fc_interface
*interface
, *tmp
;
2101 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2103 if (!test_bit(CNIC_F_BNX2X_CLASS
, &dev
->flags
)) {
2104 printk(KERN_ERR PFX
"bnx2fc port check: %s, flags: %lx\n",
2105 dev
->netdev
->name
, dev
->flags
);
2109 mutex_lock(&bnx2fc_dev_lock
);
2110 hba
= bnx2fc_find_hba_for_cnic(dev
);
2112 printk(KERN_ERR PFX
"bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2114 mutex_unlock(&bnx2fc_dev_lock
);
2118 list_del_init(&hba
->list
);
2121 list_for_each_entry_safe(interface
, tmp
, &if_list
, list
)
2122 /* destroy not called yet, move to quiesced list */
2123 if (interface
->hba
== hba
)
2124 __bnx2fc_destroy(interface
);
2125 mutex_unlock(&bnx2fc_dev_lock
);
2127 bnx2fc_ulp_stop(hba
);
2128 /* unregister cnic device */
2129 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED
, &hba
->reg_with_cnic
))
2130 hba
->cnic
->unregister_device(hba
->cnic
, CNIC_ULP_FCOE
);
2131 bnx2fc_hba_destroy(hba
);
2135 * bnx2fc_fcoe_reset - Resets the fcoe
2137 * @shost: shost the reset is from
2141 static int bnx2fc_fcoe_reset(struct Scsi_Host
*shost
)
2143 struct fc_lport
*lport
= shost_priv(shost
);
2144 fc_lport_reset(lport
);
2149 static bool bnx2fc_match(struct net_device
*netdev
)
2151 mutex_lock(&bnx2fc_dev_lock
);
2152 if (netdev
->priv_flags
& IFF_802_1Q_VLAN
) {
2153 struct net_device
*phys_dev
= vlan_dev_real_dev(netdev
);
2155 if (bnx2fc_hba_lookup(phys_dev
)) {
2156 mutex_unlock(&bnx2fc_dev_lock
);
2160 mutex_unlock(&bnx2fc_dev_lock
);
2165 static struct fcoe_transport bnx2fc_transport
= {
2168 .list
= LIST_HEAD_INIT(bnx2fc_transport
.list
),
2169 .match
= bnx2fc_match
,
2170 .create
= bnx2fc_create
,
2171 .destroy
= bnx2fc_destroy
,
2172 .enable
= bnx2fc_enable
,
2173 .disable
= bnx2fc_disable
,
2177 * bnx2fc_percpu_thread_create - Create a receive thread for an
2180 * @cpu: cpu index for the online cpu
2182 static void bnx2fc_percpu_thread_create(unsigned int cpu
)
2184 struct bnx2fc_percpu_s
*p
;
2185 struct task_struct
*thread
;
2187 p
= &per_cpu(bnx2fc_percpu
, cpu
);
2189 thread
= kthread_create(bnx2fc_percpu_io_thread
,
2191 "bnx2fc_thread/%d", cpu
);
2192 /* bind thread to the cpu */
2193 if (likely(!IS_ERR(thread
))) {
2194 kthread_bind(thread
, cpu
);
2195 p
->iothread
= thread
;
2196 wake_up_process(thread
);
2200 static void bnx2fc_percpu_thread_destroy(unsigned int cpu
)
2202 struct bnx2fc_percpu_s
*p
;
2203 struct task_struct
*thread
;
2204 struct bnx2fc_work
*work
, *tmp
;
2206 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu
);
2208 /* Prevent any new work from being queued for this CPU */
2209 p
= &per_cpu(bnx2fc_percpu
, cpu
);
2210 spin_lock_bh(&p
->fp_work_lock
);
2211 thread
= p
->iothread
;
2215 /* Free all work in the list */
2216 list_for_each_entry_safe(work
, tmp
, &p
->work_list
, list
) {
2217 list_del_init(&work
->list
);
2218 bnx2fc_process_cq_compl(work
->tgt
, work
->wqe
);
2222 spin_unlock_bh(&p
->fp_work_lock
);
2225 kthread_stop(thread
);
2229 * bnx2fc_cpu_callback - Handler for CPU hotplug events
2231 * @nfb: The callback data block
2232 * @action: The event triggering the callback
2233 * @hcpu: The index of the CPU that the event is for
2235 * This creates or destroys per-CPU data for fcoe
2237 * Returns NOTIFY_OK always.
2239 static int bnx2fc_cpu_callback(struct notifier_block
*nfb
,
2240 unsigned long action
, void *hcpu
)
2242 unsigned cpu
= (unsigned long)hcpu
;
2246 case CPU_ONLINE_FROZEN
:
2247 printk(PFX
"CPU %x online: Create Rx thread\n", cpu
);
2248 bnx2fc_percpu_thread_create(cpu
);
2251 case CPU_DEAD_FROZEN
:
2252 printk(PFX
"CPU %x offline: Remove Rx thread\n", cpu
);
2253 bnx2fc_percpu_thread_destroy(cpu
);
2262 * bnx2fc_mod_init - module init entry point
2264 * Initialize driver wide global data structures, and register
2267 static int __init
bnx2fc_mod_init(void)
2269 struct fcoe_percpu_s
*bg
;
2270 struct task_struct
*l2_thread
;
2272 unsigned int cpu
= 0;
2273 struct bnx2fc_percpu_s
*p
;
2275 printk(KERN_INFO PFX
"%s", version
);
2277 /* register as a fcoe transport */
2278 rc
= fcoe_transport_attach(&bnx2fc_transport
);
2280 printk(KERN_ERR
"failed to register an fcoe transport, check "
2281 "if libfcoe is loaded\n");
2285 INIT_LIST_HEAD(&adapter_list
);
2286 INIT_LIST_HEAD(&if_list
);
2287 mutex_init(&bnx2fc_dev_lock
);
2290 /* Attach FC transport template */
2291 rc
= bnx2fc_attach_transport();
2295 bnx2fc_wq
= alloc_workqueue("bnx2fc", 0, 0);
2301 bg
= &bnx2fc_global
;
2302 skb_queue_head_init(&bg
->fcoe_rx_list
);
2303 l2_thread
= kthread_create(bnx2fc_l2_rcv_thread
,
2305 "bnx2fc_l2_thread");
2306 if (IS_ERR(l2_thread
)) {
2307 rc
= PTR_ERR(l2_thread
);
2310 wake_up_process(l2_thread
);
2311 spin_lock_bh(&bg
->fcoe_rx_list
.lock
);
2312 bg
->thread
= l2_thread
;
2313 spin_unlock_bh(&bg
->fcoe_rx_list
.lock
);
2315 for_each_possible_cpu(cpu
) {
2316 p
= &per_cpu(bnx2fc_percpu
, cpu
);
2317 INIT_LIST_HEAD(&p
->work_list
);
2318 spin_lock_init(&p
->fp_work_lock
);
2321 for_each_online_cpu(cpu
) {
2322 bnx2fc_percpu_thread_create(cpu
);
2325 /* Initialize per CPU interrupt thread */
2326 register_hotcpu_notifier(&bnx2fc_cpu_notifier
);
2328 cnic_register_driver(CNIC_ULP_FCOE
, &bnx2fc_cnic_cb
);
2333 destroy_workqueue(bnx2fc_wq
);
2335 bnx2fc_release_transport();
2337 fcoe_transport_detach(&bnx2fc_transport
);
2342 static void __exit
bnx2fc_mod_exit(void)
2344 LIST_HEAD(to_be_deleted
);
2345 struct bnx2fc_hba
*hba
, *next
;
2346 struct fcoe_percpu_s
*bg
;
2347 struct task_struct
*l2_thread
;
2348 struct sk_buff
*skb
;
2349 unsigned int cpu
= 0;
2352 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2353 * it will have higher precedence than bnx2fc_dev_lock.
2354 * unregister_device() cannot be called with bnx2fc_dev_lock
2357 mutex_lock(&bnx2fc_dev_lock
);
2358 list_splice(&adapter_list
, &to_be_deleted
);
2359 INIT_LIST_HEAD(&adapter_list
);
2361 mutex_unlock(&bnx2fc_dev_lock
);
2363 /* Unregister with cnic */
2364 list_for_each_entry_safe(hba
, next
, &to_be_deleted
, list
) {
2365 list_del_init(&hba
->list
);
2366 printk(KERN_ERR PFX
"MOD_EXIT:destroy hba = 0x%p\n",
2368 bnx2fc_ulp_stop(hba
);
2369 /* unregister cnic device */
2370 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED
,
2371 &hba
->reg_with_cnic
))
2372 hba
->cnic
->unregister_device(hba
->cnic
,
2374 bnx2fc_hba_destroy(hba
);
2376 cnic_unregister_driver(CNIC_ULP_FCOE
);
2378 /* Destroy global thread */
2379 bg
= &bnx2fc_global
;
2380 spin_lock_bh(&bg
->fcoe_rx_list
.lock
);
2381 l2_thread
= bg
->thread
;
2383 while ((skb
= __skb_dequeue(&bg
->fcoe_rx_list
)) != NULL
)
2386 spin_unlock_bh(&bg
->fcoe_rx_list
.lock
);
2389 kthread_stop(l2_thread
);
2391 unregister_hotcpu_notifier(&bnx2fc_cpu_notifier
);
2393 /* Destroy per cpu threads */
2394 for_each_online_cpu(cpu
) {
2395 bnx2fc_percpu_thread_destroy(cpu
);
2398 destroy_workqueue(bnx2fc_wq
);
2400 * detach from scsi transport
2401 * must happen after all destroys are done
2403 bnx2fc_release_transport();
2405 /* detach from fcoe transport */
2406 fcoe_transport_detach(&bnx2fc_transport
);
2409 module_init(bnx2fc_mod_init
);
2410 module_exit(bnx2fc_mod_exit
);
2412 static struct fc_function_template bnx2fc_transport_function
= {
2413 .show_host_node_name
= 1,
2414 .show_host_port_name
= 1,
2415 .show_host_supported_classes
= 1,
2416 .show_host_supported_fc4s
= 1,
2417 .show_host_active_fc4s
= 1,
2418 .show_host_maxframe_size
= 1,
2420 .show_host_port_id
= 1,
2421 .show_host_supported_speeds
= 1,
2422 .get_host_speed
= fc_get_host_speed
,
2423 .show_host_speed
= 1,
2424 .show_host_port_type
= 1,
2425 .get_host_port_state
= fc_get_host_port_state
,
2426 .show_host_port_state
= 1,
2427 .show_host_symbolic_name
= 1,
2429 .dd_fcrport_size
= (sizeof(struct fc_rport_libfc_priv
) +
2430 sizeof(struct bnx2fc_rport
)),
2431 .show_rport_maxframe_size
= 1,
2432 .show_rport_supported_classes
= 1,
2434 .show_host_fabric_name
= 1,
2435 .show_starget_node_name
= 1,
2436 .show_starget_port_name
= 1,
2437 .show_starget_port_id
= 1,
2438 .set_rport_dev_loss_tmo
= fc_set_rport_loss_tmo
,
2439 .show_rport_dev_loss_tmo
= 1,
2440 .get_fc_host_stats
= bnx2fc_get_host_stats
,
2442 .issue_fc_host_lip
= bnx2fc_fcoe_reset
,
2444 .terminate_rport_io
= fc_rport_terminate_io
,
2446 .vport_create
= bnx2fc_vport_create
,
2447 .vport_delete
= bnx2fc_vport_destroy
,
2448 .vport_disable
= bnx2fc_vport_disable
,
2449 .bsg_request
= fc_lport_bsg_request
,
2452 static struct fc_function_template bnx2fc_vport_xport_function
= {
2453 .show_host_node_name
= 1,
2454 .show_host_port_name
= 1,
2455 .show_host_supported_classes
= 1,
2456 .show_host_supported_fc4s
= 1,
2457 .show_host_active_fc4s
= 1,
2458 .show_host_maxframe_size
= 1,
2460 .show_host_port_id
= 1,
2461 .show_host_supported_speeds
= 1,
2462 .get_host_speed
= fc_get_host_speed
,
2463 .show_host_speed
= 1,
2464 .show_host_port_type
= 1,
2465 .get_host_port_state
= fc_get_host_port_state
,
2466 .show_host_port_state
= 1,
2467 .show_host_symbolic_name
= 1,
2469 .dd_fcrport_size
= (sizeof(struct fc_rport_libfc_priv
) +
2470 sizeof(struct bnx2fc_rport
)),
2471 .show_rport_maxframe_size
= 1,
2472 .show_rport_supported_classes
= 1,
2474 .show_host_fabric_name
= 1,
2475 .show_starget_node_name
= 1,
2476 .show_starget_port_name
= 1,
2477 .show_starget_port_id
= 1,
2478 .set_rport_dev_loss_tmo
= fc_set_rport_loss_tmo
,
2479 .show_rport_dev_loss_tmo
= 1,
2480 .get_fc_host_stats
= fc_get_host_stats
,
2481 .issue_fc_host_lip
= bnx2fc_fcoe_reset
,
2482 .terminate_rport_io
= fc_rport_terminate_io
,
2483 .bsg_request
= fc_lport_bsg_request
,
2487 * scsi_host_template structure used while registering with SCSI-ml
2489 static struct scsi_host_template bnx2fc_shost_template
= {
2490 .module
= THIS_MODULE
,
2491 .name
= "Broadcom Offload FCoE Initiator",
2492 .queuecommand
= bnx2fc_queuecommand
,
2493 .eh_abort_handler
= bnx2fc_eh_abort
, /* abts */
2494 .eh_device_reset_handler
= bnx2fc_eh_device_reset
, /* lun reset */
2495 .eh_target_reset_handler
= bnx2fc_eh_target_reset
, /* tgt reset */
2496 .eh_host_reset_handler
= fc_eh_host_reset
,
2497 .slave_alloc
= fc_slave_alloc
,
2498 .change_queue_depth
= fc_change_queue_depth
,
2499 .change_queue_type
= fc_change_queue_type
,
2502 .can_queue
= BNX2FC_CAN_QUEUE
,
2503 .use_clustering
= ENABLE_CLUSTERING
,
2504 .sg_tablesize
= BNX2FC_MAX_BDS_PER_CMD
,
2508 static struct libfc_function_template bnx2fc_libfc_fcn_templ
= {
2509 .frame_send
= bnx2fc_xmit
,
2510 .elsct_send
= bnx2fc_elsct_send
,
2511 .fcp_abort_io
= bnx2fc_abort_io
,
2512 .fcp_cleanup
= bnx2fc_cleanup
,
2513 .rport_event_callback
= bnx2fc_rport_event_handler
,
2517 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2518 * structure carrying callback function pointers
2520 static struct cnic_ulp_ops bnx2fc_cnic_cb
= {
2521 .owner
= THIS_MODULE
,
2522 .cnic_init
= bnx2fc_ulp_init
,
2523 .cnic_exit
= bnx2fc_ulp_exit
,
2524 .cnic_start
= bnx2fc_ulp_start
,
2525 .cnic_stop
= bnx2fc_ulp_stop
,
2526 .indicate_kcqes
= bnx2fc_indicate_kcqe
,
2527 .indicate_netevent
= bnx2fc_indicate_netevent
,