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 "Dec 21, 2012"
28 static char version[] =
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 fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
58 static struct fc_function_template bnx2fc_vport_xport_function;
59 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
60 static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
61 static int bnx2fc_destroy(struct net_device *net_device);
62 static int bnx2fc_enable(struct net_device *netdev);
63 static int bnx2fc_disable(struct net_device *netdev);
65 /* fcoe_syfs control interface handlers */
66 static int bnx2fc_ctlr_alloc(struct net_device *netdev);
67 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
69 static void bnx2fc_recv_frame(struct sk_buff *skb);
71 static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
72 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
73 static int bnx2fc_lport_config(struct fc_lport *lport);
74 static int bnx2fc_em_config(struct fc_lport *lport);
75 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
76 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
77 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
78 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
79 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
80 struct device *parent, int npiv);
81 static void bnx2fc_destroy_work(struct work_struct *work);
83 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
84 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
86 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
87 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
89 static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
90 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
92 static void bnx2fc_port_shutdown(struct fc_lport *lport);
93 static void bnx2fc_stop(struct bnx2fc_interface *interface);
94 static int __init bnx2fc_mod_init(void);
95 static void __exit bnx2fc_mod_exit(void);
97 unsigned int bnx2fc_debug_level;
98 module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
100 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
101 unsigned long action, void *hcpu);
102 /* notification function for CPU hotplug events */
103 static struct notifier_block bnx2fc_cpu_notifier = {
104 .notifier_call = bnx2fc_cpu_callback,
107 static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
109 return ((struct bnx2fc_interface *)
110 ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
113 static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
115 struct fcoe_ctlr_device *ctlr_dev =
116 fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
117 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
118 struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
120 fcf_dev->vlan_id = fcoe->vlan_id;
123 static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
125 struct fcoe_percpu_s *bg;
126 struct fcoe_rcv_info *fr;
127 struct sk_buff_head *list;
128 struct sk_buff *skb, *next;
129 struct sk_buff *head;
132 spin_lock_bh(&bg->fcoe_rx_list.lock);
133 list = &bg->fcoe_rx_list;
135 for (skb = head; skb != (struct sk_buff *)list;
138 fr = fcoe_dev_from_skb(skb);
139 if (fr->fr_dev == lp) {
140 __skb_unlink(skb, list);
144 spin_unlock_bh(&bg->fcoe_rx_list.lock);
147 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
150 spin_lock(&bnx2fc_global_lock);
151 rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
152 spin_unlock(&bnx2fc_global_lock);
157 static void bnx2fc_abort_io(struct fc_lport *lport)
160 * This function is no-op for bnx2fc, but we do
161 * not want to leave it as NULL either, as libfc
162 * can call the default function which is
167 static void bnx2fc_cleanup(struct fc_lport *lport)
169 struct fcoe_port *port = lport_priv(lport);
170 struct bnx2fc_interface *interface = port->priv;
171 struct bnx2fc_hba *hba = interface->hba;
172 struct bnx2fc_rport *tgt;
175 BNX2FC_MISC_DBG("Entered %s\n", __func__);
176 mutex_lock(&hba->hba_mutex);
177 spin_lock_bh(&hba->hba_lock);
178 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
179 tgt = hba->tgt_ofld_list[i];
181 /* Cleanup IOs belonging to requested vport */
182 if (tgt->port == port) {
183 spin_unlock_bh(&hba->hba_lock);
184 BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
185 bnx2fc_flush_active_ios(tgt);
186 spin_lock_bh(&hba->hba_lock);
190 spin_unlock_bh(&hba->hba_lock);
191 mutex_unlock(&hba->hba_mutex);
194 static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
197 struct fc_rport_priv *rdata = tgt->rdata;
198 struct fc_frame_header *fh;
201 fh = fc_frame_header_get(fp);
202 BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
203 "r_ctl = 0x%x\n", rdata->ids.port_id,
204 ntohs(fh->fh_ox_id), fh->fh_r_ctl);
205 if ((fh->fh_type == FC_TYPE_ELS) &&
206 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
208 switch (fc_frame_payload_op(fp)) {
210 rc = bnx2fc_send_adisc(tgt, fp);
213 rc = bnx2fc_send_logo(tgt, fp);
216 rc = bnx2fc_send_rls(tgt, fp);
221 } else if ((fh->fh_type == FC_TYPE_BLS) &&
222 (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
223 BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
225 BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
226 "rctl 0x%x thru non-offload path\n",
227 fh->fh_type, fh->fh_r_ctl);
237 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
239 * @lport: the associated local port
240 * @fp: the fc_frame to be transmitted
242 static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
245 struct fcoe_crc_eof *cp;
247 struct fc_frame_header *fh;
248 struct bnx2fc_interface *interface;
249 struct fcoe_ctlr *ctlr;
250 struct bnx2fc_hba *hba;
251 struct fcoe_port *port;
253 struct bnx2fc_rport *tgt;
254 struct fc_stats *stats;
257 unsigned int hlen, tlen, elen;
260 port = (struct fcoe_port *)lport_priv(lport);
261 interface = port->priv;
262 ctlr = bnx2fc_to_ctlr(interface);
263 hba = interface->hba;
265 fh = fc_frame_header_get(fp);
268 if (!lport->link_up) {
269 BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
274 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
275 if (!ctlr->sel_fcf) {
276 BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
280 if (fcoe_ctlr_els_send(ctlr, lport, skb))
288 * Snoop the frame header to check if the frame is for
289 * an offloaded session
292 * tgt_ofld_list access is synchronized using
293 * both hba mutex and hba lock. Atleast hba mutex or
294 * hba lock needs to be held for read access.
297 spin_lock_bh(&hba->hba_lock);
298 tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
299 if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
300 /* This frame is for offloaded session */
301 BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
302 "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
303 spin_unlock_bh(&hba->hba_lock);
304 rc = bnx2fc_xmit_l2_frame(tgt, fp);
310 spin_unlock_bh(&hba->hba_lock);
313 elen = sizeof(struct ethhdr);
314 hlen = sizeof(struct fcoe_hdr);
315 tlen = sizeof(struct fcoe_crc_eof);
316 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
318 skb->ip_summed = CHECKSUM_NONE;
319 crc = fcoe_fc_crc(fp);
321 /* copy port crc and eof to the skb buff */
322 if (skb_is_nonlinear(skb)) {
324 if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
328 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
329 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
331 cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
334 memset(cp, 0, sizeof(*cp));
336 cp->fcoe_crc32 = cpu_to_le32(~crc);
337 if (skb_is_nonlinear(skb)) {
342 /* adjust skb network/transport offsets to match mac/fcoe/port */
343 skb_push(skb, elen + hlen);
344 skb_reset_mac_header(skb);
345 skb_reset_network_header(skb);
347 skb->protocol = htons(ETH_P_FCOE);
348 skb->dev = interface->netdev;
350 /* fill up mac and fcoe headers */
352 eh->h_proto = htons(ETH_P_FCOE);
354 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
356 /* insert GW address */
357 memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
359 if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
360 memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
362 memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
364 hp = (struct fcoe_hdr *)(eh + 1);
365 memset(hp, 0, sizeof(*hp));
367 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
370 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
371 if (lport->seq_offload && fr_max_payload(fp)) {
372 skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
373 skb_shinfo(skb)->gso_size = fr_max_payload(fp);
375 skb_shinfo(skb)->gso_type = 0;
376 skb_shinfo(skb)->gso_size = 0;
380 stats = per_cpu_ptr(lport->stats, get_cpu());
382 stats->TxWords += wlen;
385 /* send down to lld */
387 if (port->fcoe_pending_queue.qlen)
388 fcoe_check_wait_queue(lport, skb);
389 else if (fcoe_start_io(skb))
390 fcoe_check_wait_queue(lport, skb);
396 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
398 * @skb: the receive socket buffer
399 * @dev: associated net device
401 * @olddev: last device
403 * This function receives the packet and builds FC frame and passes it up
405 static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
406 struct packet_type *ptype, struct net_device *olddev)
408 struct fc_lport *lport;
409 struct bnx2fc_interface *interface;
410 struct fcoe_ctlr *ctlr;
411 struct fc_frame_header *fh;
412 struct fcoe_rcv_info *fr;
413 struct fcoe_percpu_s *bg;
416 interface = container_of(ptype, struct bnx2fc_interface,
418 ctlr = bnx2fc_to_ctlr(interface);
421 if (unlikely(lport == NULL)) {
422 printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
426 if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
427 printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
432 * Check for minimum frame length, and make sure required FCoE
433 * and FC headers are pulled into the linear data area.
435 if (unlikely((skb->len < FCOE_MIN_FRAME) ||
436 !pskb_may_pull(skb, FCOE_HEADER_LEN)))
439 skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
440 fh = (struct fc_frame_header *) skb_transport_header(skb);
442 oxid = ntohs(fh->fh_ox_id);
444 fr = fcoe_dev_from_skb(skb);
448 spin_lock(&bg->fcoe_rx_list.lock);
450 __skb_queue_tail(&bg->fcoe_rx_list, skb);
451 if (bg->fcoe_rx_list.qlen == 1)
452 wake_up_process(bg->thread);
454 spin_unlock(&bg->fcoe_rx_list.lock);
462 static int bnx2fc_l2_rcv_thread(void *arg)
464 struct fcoe_percpu_s *bg = arg;
467 set_user_nice(current, -20);
468 set_current_state(TASK_INTERRUPTIBLE);
469 while (!kthread_should_stop()) {
471 spin_lock_bh(&bg->fcoe_rx_list.lock);
472 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
473 spin_unlock_bh(&bg->fcoe_rx_list.lock);
474 bnx2fc_recv_frame(skb);
475 spin_lock_bh(&bg->fcoe_rx_list.lock);
477 __set_current_state(TASK_INTERRUPTIBLE);
478 spin_unlock_bh(&bg->fcoe_rx_list.lock);
480 __set_current_state(TASK_RUNNING);
485 static void bnx2fc_recv_frame(struct sk_buff *skb)
488 struct fc_lport *lport;
489 struct fcoe_rcv_info *fr;
490 struct fc_stats *stats;
491 struct fc_frame_header *fh;
492 struct fcoe_crc_eof crc_eof;
494 struct fc_lport *vn_port;
495 struct fcoe_port *port;
500 fr = fcoe_dev_from_skb(skb);
502 if (unlikely(lport == NULL)) {
503 printk(KERN_ERR PFX "Invalid lport struct\n");
508 if (skb_is_nonlinear(skb))
510 mac = eth_hdr(skb)->h_source;
511 dest_mac = eth_hdr(skb)->h_dest;
513 /* Pull the header */
514 hp = (struct fcoe_hdr *) skb_network_header(skb);
515 fh = (struct fc_frame_header *) skb_transport_header(skb);
516 skb_pull(skb, sizeof(struct fcoe_hdr));
517 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
519 stats = per_cpu_ptr(lport->stats, get_cpu());
521 stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
523 fp = (struct fc_frame *)skb;
526 fr_sof(fp) = hp->fcoe_sof;
527 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
532 fr_eof(fp) = crc_eof.fcoe_eof;
533 fr_crc(fp) = crc_eof.fcoe_crc32;
534 if (pskb_trim(skb, fr_len)) {
540 fh = fc_frame_header_get(fp);
542 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
544 port = lport_priv(vn_port);
545 if (compare_ether_addr(port->data_src_addr, dest_mac)
547 BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
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 */
560 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
561 fh->fh_type == FC_TYPE_ELS) {
562 switch (fc_frame_payload_op(fp)) {
564 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
565 /* drop non-FIP LOGO */
574 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
575 /* Drop incoming ABTS */
581 if (le32_to_cpu(fr_crc(fp)) !=
582 ~crc32(~0, skb->data, fr_len)) {
583 if (stats->InvalidCRCCount < 5)
584 printk(KERN_WARNING PFX "dropping frame with "
586 stats->InvalidCRCCount++;
592 fc_exch_recv(lport, fp);
596 * bnx2fc_percpu_io_thread - thread per cpu for ios
598 * @arg: ptr to bnx2fc_percpu_info structure
600 int bnx2fc_percpu_io_thread(void *arg)
602 struct bnx2fc_percpu_s *p = arg;
603 struct bnx2fc_work *work, *tmp;
604 LIST_HEAD(work_list);
606 set_user_nice(current, -20);
607 set_current_state(TASK_INTERRUPTIBLE);
608 while (!kthread_should_stop()) {
610 spin_lock_bh(&p->fp_work_lock);
611 while (!list_empty(&p->work_list)) {
612 list_splice_init(&p->work_list, &work_list);
613 spin_unlock_bh(&p->fp_work_lock);
615 list_for_each_entry_safe(work, tmp, &work_list, list) {
616 list_del_init(&work->list);
617 bnx2fc_process_cq_compl(work->tgt, work->wqe);
621 spin_lock_bh(&p->fp_work_lock);
623 __set_current_state(TASK_INTERRUPTIBLE);
624 spin_unlock_bh(&p->fp_work_lock);
626 __set_current_state(TASK_RUNNING);
631 static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
633 struct fc_host_statistics *bnx2fc_stats;
634 struct fc_lport *lport = shost_priv(shost);
635 struct fcoe_port *port = lport_priv(lport);
636 struct bnx2fc_interface *interface = port->priv;
637 struct bnx2fc_hba *hba = interface->hba;
638 struct fcoe_statistics_params *fw_stats;
641 fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
645 bnx2fc_stats = fc_get_host_stats(shost);
647 init_completion(&hba->stat_req_done);
648 if (bnx2fc_send_stat_req(hba))
650 rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
652 BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
655 BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
656 bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
657 BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
658 bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
659 BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
660 bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
661 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
662 bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
663 BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
664 bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
666 bnx2fc_stats->dumped_frames = 0;
667 bnx2fc_stats->lip_count = 0;
668 bnx2fc_stats->nos_count = 0;
669 bnx2fc_stats->loss_of_sync_count = 0;
670 bnx2fc_stats->loss_of_signal_count = 0;
671 bnx2fc_stats->prim_seq_protocol_err_count = 0;
673 memcpy(&hba->prev_stats, hba->stats_buffer,
674 sizeof(struct fcoe_statistics_params));
678 static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
680 struct fcoe_port *port = lport_priv(lport);
681 struct bnx2fc_interface *interface = port->priv;
682 struct Scsi_Host *shost = lport->host;
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;
690 shost->transportt = bnx2fc_vport_xport_template;
692 shost->transportt = bnx2fc_transport_template;
694 /* Add the new host to SCSI-ml */
695 rc = scsi_add_host(lport->host, dev);
697 printk(KERN_ERR PFX "Error on scsi_add_host\n");
701 fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
702 sprintf(fc_host_symbolic_name(lport->host), "%s v%s over %s",
703 BNX2FC_NAME, BNX2FC_VERSION,
704 interface->netdev->name);
709 static int bnx2fc_link_ok(struct fc_lport *lport)
711 struct fcoe_port *port = lport_priv(lport);
712 struct bnx2fc_interface *interface = port->priv;
713 struct bnx2fc_hba *hba = interface->hba;
714 struct net_device *dev = hba->phys_dev;
717 if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
718 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
720 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
727 * bnx2fc_get_link_state - get network link state
729 * @hba: adapter instance pointer
731 * updates adapter structure flag based on netdev state
733 void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
735 if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
736 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
738 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
741 static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
743 struct bnx2fc_hba *hba;
744 struct bnx2fc_interface *interface;
745 struct fcoe_ctlr *ctlr;
746 struct fcoe_port *port;
749 port = lport_priv(lport);
750 interface = port->priv;
751 ctlr = bnx2fc_to_ctlr(interface);
752 hba = interface->hba;
754 /* require support for get_pauseparam ethtool op. */
755 if (!hba->phys_dev->ethtool_ops ||
756 !hba->phys_dev->ethtool_ops->get_pauseparam)
759 if (fc_set_mfs(lport, BNX2FC_MFS))
762 skb_queue_head_init(&port->fcoe_pending_queue);
763 port->fcoe_pending_queue_active = 0;
764 setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
766 fcoe_link_speed_update(lport);
769 if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
770 wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
772 BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
773 fc_set_wwnn(lport, wwnn);
775 if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
776 wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
779 BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
780 fc_set_wwpn(lport, wwpn);
786 static void bnx2fc_destroy_timer(unsigned long data)
788 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
790 printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
791 "Destroy compl not received!!\n");
792 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
793 wake_up_interruptible(&hba->destroy_wait);
797 * bnx2fc_indicate_netevent - Generic netdev event handler
799 * @context: adapter structure pointer
801 * @vlan_id: vlan id - associated vlan id with this event
803 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
804 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
806 static void bnx2fc_indicate_netevent(void *context, unsigned long event,
809 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
810 struct fcoe_ctlr_device *cdev;
811 struct fc_lport *lport;
812 struct fc_lport *vport;
813 struct bnx2fc_interface *interface, *tmp;
814 struct fcoe_ctlr *ctlr;
815 int wait_for_upload = 0;
816 u32 link_possible = 1;
818 if (vlan_id != 0 && event != NETDEV_UNREGISTER)
823 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
824 printk(KERN_ERR "indicate_netevent: "\
825 "hba is not UP!!\n");
829 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
830 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
834 case NETDEV_GOING_DOWN:
835 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
842 case NETDEV_UNREGISTER:
845 mutex_lock(&bnx2fc_dev_lock);
846 list_for_each_entry_safe(interface, tmp, &if_list, list) {
847 if (interface->hba == hba &&
848 interface->vlan_id == (vlan_id & VLAN_VID_MASK))
849 __bnx2fc_destroy(interface);
851 mutex_unlock(&bnx2fc_dev_lock);
855 printk(KERN_ERR PFX "Unknown netevent %ld", event);
859 mutex_lock(&bnx2fc_dev_lock);
860 list_for_each_entry(interface, &if_list, list) {
862 if (interface->hba != hba)
865 ctlr = bnx2fc_to_ctlr(interface);
867 BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
868 interface->netdev->name, event);
870 fcoe_link_speed_update(lport);
872 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
874 if (link_possible && !bnx2fc_link_ok(lport)) {
875 switch (cdev->enabled) {
876 case FCOE_CTLR_DISABLED:
877 pr_info("Link up while interface is disabled.\n");
879 case FCOE_CTLR_ENABLED:
880 case FCOE_CTLR_UNUSED:
881 /* Reset max recv frame size to default */
882 fc_set_mfs(lport, BNX2FC_MFS);
884 * ctlr link up will only be handled during
885 * enable to avoid sending discovery
886 * solicitation on a stale vlan
888 if (interface->enabled)
889 fcoe_ctlr_link_up(ctlr);
891 } else if (fcoe_ctlr_link_down(ctlr)) {
892 switch (cdev->enabled) {
893 case FCOE_CTLR_DISABLED:
894 pr_info("Link down while interface is disabled.\n");
896 case FCOE_CTLR_ENABLED:
897 case FCOE_CTLR_UNUSED:
898 mutex_lock(&lport->lp_mutex);
899 list_for_each_entry(vport, &lport->vports, list)
900 fc_host_port_type(vport->host) =
902 mutex_unlock(&lport->lp_mutex);
903 fc_host_port_type(lport->host) =
905 per_cpu_ptr(lport->stats,
906 get_cpu())->LinkFailureCount++;
908 fcoe_clean_pending_queue(lport);
913 mutex_unlock(&bnx2fc_dev_lock);
915 if (wait_for_upload) {
916 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
917 init_waitqueue_head(&hba->shutdown_wait);
918 BNX2FC_MISC_DBG("indicate_netevent "
919 "num_ofld_sess = %d\n",
921 hba->wait_for_link_down = 1;
922 wait_event_interruptible(hba->shutdown_wait,
923 (hba->num_ofld_sess == 0));
924 BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
926 hba->wait_for_link_down = 0;
928 if (signal_pending(current))
929 flush_signals(current);
933 static int bnx2fc_libfc_config(struct fc_lport *lport)
936 /* Set the function pointers set by bnx2fc driver */
937 memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
938 sizeof(struct libfc_function_template));
939 fc_elsct_init(lport);
941 fc_rport_init(lport);
946 static int bnx2fc_em_config(struct fc_lport *lport)
951 max_xid = FCOE_XIDS_PER_CPU;
953 max_xid = FCOE_MAX_XID;
954 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID,
956 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
963 static int bnx2fc_lport_config(struct fc_lport *lport)
967 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
968 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
969 lport->e_d_tov = 2 * 1000;
970 lport->r_a_tov = 10 * 1000;
972 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
973 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
974 lport->does_npiv = 1;
976 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
977 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
979 /* alloc stats structure */
980 if (fc_lport_init_stats(lport))
983 /* Finish fc_lport configuration */
984 fc_lport_config(lport);
990 * bnx2fc_fip_recv - handle a received FIP frame.
992 * @skb: the received skb
993 * @dev: associated &net_device
994 * @ptype: the &packet_type structure which was used to register this handler.
995 * @orig_dev: original receive &net_device, in case @ dev is a bond.
997 * Returns: 0 for success
999 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1000 struct packet_type *ptype,
1001 struct net_device *orig_dev)
1003 struct bnx2fc_interface *interface;
1004 struct fcoe_ctlr *ctlr;
1005 interface = container_of(ptype, struct bnx2fc_interface,
1007 ctlr = bnx2fc_to_ctlr(interface);
1008 fcoe_ctlr_recv(ctlr, skb);
1013 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1015 * @fip: FCoE controller.
1016 * @old: Unicast MAC address to delete if the MAC is non-zero.
1017 * @new: Unicast MAC address to add.
1019 * Remove any previously-set unicast MAC filter.
1020 * Add secondary FCoE MAC address filter for our OUI.
1022 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1024 struct fcoe_port *port = lport_priv(lport);
1026 memcpy(port->data_src_addr, addr, ETH_ALEN);
1030 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1032 * @lport: libfc port
1034 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1036 struct fcoe_port *port;
1038 port = (struct fcoe_port *)lport_priv(lport);
1039 return port->data_src_addr;
1043 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1045 * @fip: FCoE controller.
1048 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1050 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1051 dev_queue_xmit(skb);
1054 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1056 struct Scsi_Host *shost = vport_to_shost(vport);
1057 struct fc_lport *n_port = shost_priv(shost);
1058 struct fcoe_port *port = lport_priv(n_port);
1059 struct bnx2fc_interface *interface = port->priv;
1060 struct net_device *netdev = interface->netdev;
1061 struct fc_lport *vn_port;
1065 rc = fcoe_validate_vport_create(vport);
1067 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1068 printk(KERN_ERR PFX "Failed to create vport, "
1069 "WWPN (0x%s) already exists\n",
1074 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1075 printk(KERN_ERR PFX "vn ports cannot be created on"
1076 "this interface\n");
1080 mutex_lock(&bnx2fc_dev_lock);
1081 vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1082 mutex_unlock(&bnx2fc_dev_lock);
1085 if (IS_ERR(vn_port)) {
1086 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1092 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1094 vn_port->boot_time = jiffies;
1095 fc_lport_init(vn_port);
1096 fc_fabric_login(vn_port);
1097 fc_vport_setlink(vn_port);
1102 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1104 struct bnx2fc_lport *blport, *tmp;
1106 spin_lock_bh(&hba->hba_lock);
1107 list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1108 if (blport->lport == lport) {
1109 list_del(&blport->list);
1113 spin_unlock_bh(&hba->hba_lock);
1116 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1118 struct Scsi_Host *shost = vport_to_shost(vport);
1119 struct fc_lport *n_port = shost_priv(shost);
1120 struct fc_lport *vn_port = vport->dd_data;
1121 struct fcoe_port *port = lport_priv(vn_port);
1122 struct bnx2fc_interface *interface = port->priv;
1123 struct fc_lport *v_port;
1126 mutex_lock(&n_port->lp_mutex);
1127 list_for_each_entry(v_port, &n_port->vports, list)
1128 if (v_port->vport == vport) {
1134 mutex_unlock(&n_port->lp_mutex);
1137 list_del(&vn_port->list);
1138 mutex_unlock(&n_port->lp_mutex);
1139 bnx2fc_free_vport(interface->hba, port->lport);
1140 bnx2fc_port_shutdown(port->lport);
1141 bnx2fc_interface_put(interface);
1142 queue_work(bnx2fc_wq, &port->destroy_work);
1146 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1148 struct fc_lport *lport = vport->dd_data;
1151 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1152 fc_fabric_logoff(lport);
1154 lport->boot_time = jiffies;
1155 fc_fabric_login(lport);
1156 fc_vport_setlink(lport);
1162 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1164 struct net_device *netdev = interface->netdev;
1165 struct net_device *physdev = interface->hba->phys_dev;
1166 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1167 struct netdev_hw_addr *ha;
1168 int sel_san_mac = 0;
1170 /* setup Source MAC Address */
1172 for_each_dev_addr(physdev, ha) {
1173 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1175 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1176 ha->addr[1], ha->addr[2], ha->addr[3],
1177 ha->addr[4], ha->addr[5]);
1179 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1180 (is_valid_ether_addr(ha->addr))) {
1181 memcpy(ctlr->ctl_src_addr, ha->addr,
1184 BNX2FC_MISC_DBG("Found SAN MAC\n");
1192 interface->fip_packet_type.func = bnx2fc_fip_recv;
1193 interface->fip_packet_type.type = htons(ETH_P_FIP);
1194 interface->fip_packet_type.dev = netdev;
1195 dev_add_pack(&interface->fip_packet_type);
1197 interface->fcoe_packet_type.func = bnx2fc_rcv;
1198 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1199 interface->fcoe_packet_type.dev = netdev;
1200 dev_add_pack(&interface->fcoe_packet_type);
1205 static int bnx2fc_attach_transport(void)
1207 bnx2fc_transport_template =
1208 fc_attach_transport(&bnx2fc_transport_function);
1210 if (bnx2fc_transport_template == NULL) {
1211 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1215 bnx2fc_vport_xport_template =
1216 fc_attach_transport(&bnx2fc_vport_xport_function);
1217 if (bnx2fc_vport_xport_template == NULL) {
1219 "Failed to attach FC transport for vport\n");
1220 fc_release_transport(bnx2fc_transport_template);
1221 bnx2fc_transport_template = NULL;
1226 static void bnx2fc_release_transport(void)
1228 fc_release_transport(bnx2fc_transport_template);
1229 fc_release_transport(bnx2fc_vport_xport_template);
1230 bnx2fc_transport_template = NULL;
1231 bnx2fc_vport_xport_template = NULL;
1234 static void bnx2fc_interface_release(struct kref *kref)
1236 struct fcoe_ctlr_device *ctlr_dev;
1237 struct bnx2fc_interface *interface;
1238 struct fcoe_ctlr *ctlr;
1239 struct net_device *netdev;
1241 interface = container_of(kref, struct bnx2fc_interface, kref);
1242 BNX2FC_MISC_DBG("Interface is being released\n");
1244 ctlr = bnx2fc_to_ctlr(interface);
1245 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1246 netdev = interface->netdev;
1248 /* tear-down FIP controller */
1249 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1250 fcoe_ctlr_destroy(ctlr);
1252 fcoe_ctlr_device_delete(ctlr_dev);
1255 module_put(THIS_MODULE);
1258 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1260 kref_get(&interface->kref);
1263 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1265 kref_put(&interface->kref, bnx2fc_interface_release);
1267 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1269 /* Free the command manager */
1271 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1272 hba->cmd_mgr = NULL;
1274 kfree(hba->tgt_ofld_list);
1275 bnx2fc_unbind_pcidev(hba);
1280 * bnx2fc_hba_create - create a new bnx2fc hba
1282 * @cnic: pointer to cnic device
1284 * Creates a new FCoE hba on the given device.
1287 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1289 struct bnx2fc_hba *hba;
1290 struct fcoe_capabilities *fcoe_cap;
1293 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1295 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1298 spin_lock_init(&hba->hba_lock);
1299 mutex_init(&hba->hba_mutex);
1302 rc = bnx2fc_bind_pcidev(hba);
1304 printk(KERN_ERR PFX "create_adapter: bind error\n");
1307 hba->phys_dev = cnic->netdev;
1308 hba->next_conn_id = 0;
1310 hba->tgt_ofld_list =
1311 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1313 if (!hba->tgt_ofld_list) {
1314 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1318 hba->num_ofld_sess = 0;
1320 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID,
1322 if (!hba->cmd_mgr) {
1323 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1326 fcoe_cap = &hba->fcoe_cap;
1328 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1329 FCOE_IOS_PER_CONNECTION_SHIFT;
1330 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1331 FCOE_LOGINS_PER_PORT_SHIFT;
1332 fcoe_cap->capability2 = BNX2FC_MAX_OUTSTANDING_CMNDS <<
1333 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1334 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1335 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1336 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1337 FCOE_TARGETS_SUPPORTED_SHIFT;
1338 fcoe_cap->capability3 |= BNX2FC_MAX_OUTSTANDING_CMNDS <<
1339 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1340 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1342 init_waitqueue_head(&hba->shutdown_wait);
1343 init_waitqueue_head(&hba->destroy_wait);
1344 INIT_LIST_HEAD(&hba->vports);
1349 kfree(hba->tgt_ofld_list);
1351 bnx2fc_unbind_pcidev(hba);
1357 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1358 struct net_device *netdev,
1359 enum fip_state fip_mode)
1361 struct fcoe_ctlr_device *ctlr_dev;
1362 struct bnx2fc_interface *interface;
1363 struct fcoe_ctlr *ctlr;
1367 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1368 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1371 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1374 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1375 interface = fcoe_ctlr_priv(ctlr);
1377 kref_init(&interface->kref);
1378 interface->hba = hba;
1379 interface->netdev = netdev;
1381 /* Initialize FIP */
1382 fcoe_ctlr_init(ctlr, fip_mode);
1383 ctlr->send = bnx2fc_fip_send;
1384 ctlr->update_mac = bnx2fc_update_src_mac;
1385 ctlr->get_src_addr = bnx2fc_get_src_mac;
1386 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1388 rc = bnx2fc_interface_setup(interface);
1392 fcoe_ctlr_destroy(ctlr);
1394 fcoe_ctlr_device_delete(ctlr_dev);
1399 * bnx2fc_if_create - Create FCoE instance on a given interface
1401 * @interface: FCoE interface to create a local port on
1402 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1403 * @npiv: Indicates if the port is vport or not
1405 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1407 * Returns: Allocated fc_lport or an error pointer
1409 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1410 struct device *parent, int npiv)
1412 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1413 struct fc_lport *lport, *n_port;
1414 struct fcoe_port *port;
1415 struct Scsi_Host *shost;
1416 struct fc_vport *vport = dev_to_vport(parent);
1417 struct bnx2fc_lport *blport;
1418 struct bnx2fc_hba *hba;
1421 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1423 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1427 /* Allocate Scsi_Host structure */
1429 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1431 lport = libfc_vport_create(vport, sizeof(*port));
1434 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1437 shost = lport->host;
1438 port = lport_priv(lport);
1439 port->lport = lport;
1440 port->priv = interface;
1441 port->get_netdev = bnx2fc_netdev;
1442 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1444 /* Configure fcoe_port */
1445 rc = bnx2fc_lport_config(lport);
1450 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1451 vport->node_name, vport->port_name);
1452 fc_set_wwnn(lport, vport->node_name);
1453 fc_set_wwpn(lport, vport->port_name);
1455 /* Configure netdev and networking properties of the lport */
1456 rc = bnx2fc_net_config(lport, interface->netdev);
1458 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1462 rc = bnx2fc_shost_config(lport, parent);
1464 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1465 interface->netdev->name);
1469 /* Initialize the libfc library */
1470 rc = bnx2fc_libfc_config(lport);
1472 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1475 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1477 /* Allocate exchange manager */
1479 rc = bnx2fc_em_config(lport);
1481 shost = vport_to_shost(vport);
1482 n_port = shost_priv(shost);
1483 rc = fc_exch_mgr_list_clone(n_port, lport);
1487 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1491 bnx2fc_interface_get(interface);
1493 hba = interface->hba;
1494 spin_lock_bh(&hba->hba_lock);
1495 blport->lport = lport;
1496 list_add_tail(&blport->list, &hba->vports);
1497 spin_unlock_bh(&hba->hba_lock);
1502 scsi_remove_host(shost);
1504 scsi_host_put(lport->host);
1510 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1512 /* Dont listen for Ethernet packets anymore */
1513 __dev_remove_pack(&interface->fcoe_packet_type);
1514 __dev_remove_pack(&interface->fip_packet_type);
1518 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1520 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1521 struct fc_lport *lport = ctlr->lp;
1522 struct fcoe_port *port = lport_priv(lport);
1523 struct bnx2fc_hba *hba = interface->hba;
1525 /* Stop the transmit retry timer */
1526 del_timer_sync(&port->timer);
1528 /* Free existing transmit skbs */
1529 fcoe_clean_pending_queue(lport);
1531 bnx2fc_net_cleanup(interface);
1533 bnx2fc_free_vport(hba, lport);
1536 static void bnx2fc_if_destroy(struct fc_lport *lport)
1539 /* Free queued packets for the receive thread */
1540 bnx2fc_clean_rx_queue(lport);
1542 /* Detach from scsi-ml */
1543 fc_remove_host(lport->host);
1544 scsi_remove_host(lport->host);
1547 * Note that only the physical lport will have the exchange manager.
1548 * for vports, this function is NOP
1550 fc_exch_mgr_free(lport);
1552 /* Free memory used by statistical counters */
1553 fc_lport_free_stats(lport);
1555 /* Release Scsi_Host */
1556 scsi_host_put(lport->host);
1559 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1561 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1562 struct fc_lport *lport = ctlr->lp;
1563 struct fcoe_port *port = lport_priv(lport);
1565 bnx2fc_interface_cleanup(interface);
1566 bnx2fc_stop(interface);
1567 list_del(&interface->list);
1568 bnx2fc_interface_put(interface);
1569 queue_work(bnx2fc_wq, &port->destroy_work);
1573 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1575 * @buffer: The name of the Ethernet interface to be destroyed
1576 * @kp: The associated kernel parameter
1578 * Called from sysfs.
1580 * Returns: 0 for success
1582 static int bnx2fc_destroy(struct net_device *netdev)
1584 struct bnx2fc_interface *interface = NULL;
1585 struct workqueue_struct *timer_work_queue;
1586 struct fcoe_ctlr *ctlr;
1590 mutex_lock(&bnx2fc_dev_lock);
1592 interface = bnx2fc_interface_lookup(netdev);
1593 ctlr = bnx2fc_to_ctlr(interface);
1594 if (!interface || !ctlr->lp) {
1596 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1600 timer_work_queue = interface->timer_work_queue;
1601 __bnx2fc_destroy(interface);
1602 destroy_workqueue(timer_work_queue);
1605 mutex_unlock(&bnx2fc_dev_lock);
1610 static void bnx2fc_destroy_work(struct work_struct *work)
1612 struct fcoe_port *port;
1613 struct fc_lport *lport;
1615 port = container_of(work, struct fcoe_port, destroy_work);
1616 lport = port->lport;
1618 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1620 bnx2fc_if_destroy(lport);
1623 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1625 bnx2fc_free_fw_resc(hba);
1626 bnx2fc_free_task_ctx(hba);
1630 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1633 * @hba: Adapter instance
1635 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1637 if (bnx2fc_setup_task_ctx(hba))
1640 if (bnx2fc_setup_fw_resc(hba))
1645 bnx2fc_unbind_adapter_devices(hba);
1649 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1651 struct cnic_dev *cnic;
1654 printk(KERN_ERR PFX "cnic is NULL\n");
1658 hba->pcidev = cnic->pcidev;
1660 pci_dev_get(hba->pcidev);
1665 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1668 pci_dev_put(hba->pcidev);
1673 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1675 * @handle: transport handle pointing to adapter struture
1677 static int bnx2fc_ulp_get_stats(void *handle)
1679 struct bnx2fc_hba *hba = handle;
1680 struct cnic_dev *cnic;
1681 struct fcoe_stats_info *stats_addr;
1687 stats_addr = &cnic->stats_addr->fcoe_stat;
1691 strncpy(stats_addr->version, BNX2FC_VERSION,
1692 sizeof(stats_addr->version));
1693 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1694 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1701 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1703 * @handle: transport handle pointing to adapter structure
1705 * This function maps adapter structure to pcidev structure and initiates
1706 * firmware handshake to enable/initialize on-chip FCoE components.
1707 * This bnx2fc - cnic interface api callback is used after following
1708 * conditions are met -
1709 * a) underlying network interface is up (marked by event NETDEV_UP
1711 * b) bnx2fc adatper structure is registered.
1713 static void bnx2fc_ulp_start(void *handle)
1715 struct bnx2fc_hba *hba = handle;
1716 struct bnx2fc_interface *interface;
1717 struct fcoe_ctlr *ctlr;
1718 struct fc_lport *lport;
1720 mutex_lock(&bnx2fc_dev_lock);
1722 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1723 bnx2fc_fw_init(hba);
1725 BNX2FC_MISC_DBG("bnx2fc started.\n");
1727 list_for_each_entry(interface, &if_list, list) {
1728 if (interface->hba == hba) {
1729 ctlr = bnx2fc_to_ctlr(interface);
1731 /* Kick off Fabric discovery*/
1732 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1733 lport->tt.frame_send = bnx2fc_xmit;
1734 bnx2fc_start_disc(interface);
1738 mutex_unlock(&bnx2fc_dev_lock);
1741 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1743 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1744 fc_fabric_logoff(lport);
1745 fc_lport_destroy(lport);
1748 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1750 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1751 struct fc_lport *lport;
1752 struct fc_lport *vport;
1754 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1758 bnx2fc_port_shutdown(lport);
1760 mutex_lock(&lport->lp_mutex);
1761 list_for_each_entry(vport, &lport->vports, list)
1762 fc_host_port_type(vport->host) =
1763 FC_PORTTYPE_UNKNOWN;
1764 mutex_unlock(&lport->lp_mutex);
1765 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1766 fcoe_ctlr_link_down(ctlr);
1767 fcoe_clean_pending_queue(lport);
1770 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1772 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1776 rc = bnx2fc_bind_adapter_devices(hba);
1778 printk(KERN_ALERT PFX
1779 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1783 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1785 printk(KERN_ALERT PFX
1786 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1791 * Wait until the adapter init message is complete, and adapter
1794 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1795 msleep(BNX2FC_INIT_POLL_TIME);
1797 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1798 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1800 hba->cnic->netdev->name);
1806 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1810 bnx2fc_unbind_adapter_devices(hba);
1815 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1817 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1818 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1819 init_timer(&hba->destroy_timer);
1820 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1822 hba->destroy_timer.function = bnx2fc_destroy_timer;
1823 hba->destroy_timer.data = (unsigned long)hba;
1824 add_timer(&hba->destroy_timer);
1825 wait_event_interruptible(hba->destroy_wait,
1826 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1828 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1829 /* This should never happen */
1830 if (signal_pending(current))
1831 flush_signals(current);
1833 del_timer_sync(&hba->destroy_timer);
1835 bnx2fc_unbind_adapter_devices(hba);
1840 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1842 * @handle: transport handle pointing to adapter structure
1844 * Driver checks if adapter is already in shutdown mode, if not start
1845 * the shutdown process.
1847 static void bnx2fc_ulp_stop(void *handle)
1849 struct bnx2fc_hba *hba = handle;
1850 struct bnx2fc_interface *interface;
1852 printk(KERN_ERR "ULP_STOP\n");
1854 mutex_lock(&bnx2fc_dev_lock);
1855 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1857 list_for_each_entry(interface, &if_list, list) {
1858 if (interface->hba == hba)
1859 bnx2fc_stop(interface);
1861 BUG_ON(hba->num_ofld_sess != 0);
1863 mutex_lock(&hba->hba_mutex);
1864 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1865 clear_bit(ADAPTER_STATE_GOING_DOWN,
1866 &hba->adapter_state);
1868 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1869 mutex_unlock(&hba->hba_mutex);
1871 bnx2fc_fw_destroy(hba);
1873 mutex_unlock(&bnx2fc_dev_lock);
1876 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1878 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1879 struct fc_lport *lport;
1882 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1883 /* Kick off FIP/FLOGI */
1884 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1885 printk(KERN_ERR PFX "Init not done yet\n");
1890 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1892 if (!bnx2fc_link_ok(lport) && interface->enabled) {
1893 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1894 fcoe_ctlr_link_up(ctlr);
1895 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1896 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1899 /* wait for the FCF to be selected before issuing FLOGI */
1900 while (!ctlr->sel_fcf) {
1902 /* give up after 3 secs */
1903 if (++wait_cnt > 12)
1907 /* Reset max receive frame size to default */
1908 if (fc_set_mfs(lport, BNX2FC_MFS))
1911 fc_lport_init(lport);
1912 fc_fabric_login(lport);
1917 * bnx2fc_ulp_init - Initialize an adapter instance
1919 * @dev : cnic device handle
1920 * Called from cnic_register_driver() context to initialize all
1921 * enumerated cnic devices. This routine allocates adapter structure
1922 * and other device specific resources.
1924 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1926 struct bnx2fc_hba *hba;
1929 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1930 /* bnx2fc works only when bnx2x is loaded */
1931 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1932 (dev->max_fcoe_conn == 0)) {
1933 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1934 " flags: %lx fcoe_conn: %d\n",
1935 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1939 hba = bnx2fc_hba_create(dev);
1941 printk(KERN_ERR PFX "hba initialization failed\n");
1945 /* Add HBA to the adapter list */
1946 mutex_lock(&bnx2fc_dev_lock);
1947 list_add_tail(&hba->list, &adapter_list);
1949 mutex_unlock(&bnx2fc_dev_lock);
1951 dev->fcoe_cap = &hba->fcoe_cap;
1952 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1953 rc = dev->register_device(dev, CNIC_ULP_FCOE,
1956 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
1958 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1962 * Deperecated: Use bnx2fc_enabled()
1964 static int bnx2fc_disable(struct net_device *netdev)
1966 struct bnx2fc_interface *interface;
1967 struct fcoe_ctlr *ctlr;
1971 mutex_lock(&bnx2fc_dev_lock);
1973 interface = bnx2fc_interface_lookup(netdev);
1974 ctlr = bnx2fc_to_ctlr(interface);
1975 if (!interface || !ctlr->lp) {
1977 printk(KERN_ERR PFX "bnx2fc_disable: interface or lport not found\n");
1979 interface->enabled = false;
1980 fcoe_ctlr_link_down(ctlr);
1981 fcoe_clean_pending_queue(ctlr->lp);
1984 mutex_unlock(&bnx2fc_dev_lock);
1990 * Deprecated: Use bnx2fc_enabled()
1992 static int bnx2fc_enable(struct net_device *netdev)
1994 struct bnx2fc_interface *interface;
1995 struct fcoe_ctlr *ctlr;
1999 mutex_lock(&bnx2fc_dev_lock);
2001 interface = bnx2fc_interface_lookup(netdev);
2002 ctlr = bnx2fc_to_ctlr(interface);
2003 if (!interface || !ctlr->lp) {
2005 printk(KERN_ERR PFX "bnx2fc_enable: interface or lport not found\n");
2006 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2007 fcoe_ctlr_link_up(ctlr);
2008 interface->enabled = true;
2011 mutex_unlock(&bnx2fc_dev_lock);
2017 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2018 * @cdev: The FCoE Controller that is being enabled or disabled
2020 * fcoe_sysfs will ensure that the state of 'enabled' has
2021 * changed, so no checking is necessary here. This routine simply
2022 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2023 * When those routines are removed the functionality can be merged
2026 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2028 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2029 struct fc_lport *lport = ctlr->lp;
2030 struct net_device *netdev = bnx2fc_netdev(lport);
2032 switch (cdev->enabled) {
2033 case FCOE_CTLR_ENABLED:
2034 return bnx2fc_enable(netdev);
2035 case FCOE_CTLR_DISABLED:
2036 return bnx2fc_disable(netdev);
2037 case FCOE_CTLR_UNUSED:
2043 enum bnx2fc_create_link_state {
2044 BNX2FC_CREATE_LINK_DOWN,
2045 BNX2FC_CREATE_LINK_UP,
2049 * _bnx2fc_create() - Create bnx2fc FCoE interface
2050 * @netdev : The net_device object the Ethernet interface to create on
2051 * @fip_mode: The FIP mode for this creation
2052 * @link_state: The ctlr link state on creation
2054 * Called from either the libfcoe 'create' module parameter
2055 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2057 * libfcoe's 'create' module parameter is deprecated so some
2058 * consolidation of code can be done when that interface is
2061 * Returns: 0 for success
2063 static int _bnx2fc_create(struct net_device *netdev,
2064 enum fip_state fip_mode,
2065 enum bnx2fc_create_link_state link_state)
2067 struct fcoe_ctlr_device *cdev;
2068 struct fcoe_ctlr *ctlr;
2069 struct bnx2fc_interface *interface;
2070 struct bnx2fc_hba *hba;
2071 struct net_device *phys_dev = netdev;
2072 struct fc_lport *lport;
2073 struct ethtool_drvinfo drvinfo;
2077 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2078 if (fip_mode != FIP_MODE_FABRIC) {
2079 printk(KERN_ERR "fip mode not FABRIC\n");
2085 mutex_lock(&bnx2fc_dev_lock);
2087 if (!try_module_get(THIS_MODULE)) {
2092 /* obtain physical netdev */
2093 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2094 phys_dev = vlan_dev_real_dev(netdev);
2096 /* verify if the physical device is a netxtreme2 device */
2097 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2098 memset(&drvinfo, 0, sizeof(drvinfo));
2099 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2100 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2101 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2106 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2111 /* obtain interface and initialize rest of the structure */
2112 hba = bnx2fc_hba_lookup(phys_dev);
2115 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2119 if (bnx2fc_interface_lookup(netdev)) {
2124 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2126 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2130 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2131 vlan_id = vlan_dev_vlan_id(netdev);
2132 interface->vlan_enabled = 1;
2135 ctlr = bnx2fc_to_ctlr(interface);
2136 interface->vlan_id = vlan_id;
2138 interface->timer_work_queue =
2139 create_singlethread_workqueue("bnx2fc_timer_wq");
2140 if (!interface->timer_work_queue) {
2141 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2146 lport = bnx2fc_if_create(interface, &interface->hba->pcidev->dev, 0);
2148 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2154 /* Add interface to if_list */
2155 list_add_tail(&interface->list, &if_list);
2157 lport->boot_time = jiffies;
2159 /* Make this master N_port */
2162 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2164 if (link_state == BNX2FC_CREATE_LINK_UP)
2165 cdev->enabled = FCOE_CTLR_ENABLED;
2167 cdev->enabled = FCOE_CTLR_DISABLED;
2169 if (link_state == BNX2FC_CREATE_LINK_UP &&
2170 !bnx2fc_link_ok(lport)) {
2171 fcoe_ctlr_link_up(ctlr);
2172 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2173 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2176 BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2177 bnx2fc_start_disc(interface);
2179 if (link_state == BNX2FC_CREATE_LINK_UP)
2180 interface->enabled = true;
2183 * Release from kref_init in bnx2fc_interface_setup, on success
2184 * lport should be holding a reference taken in bnx2fc_if_create
2186 bnx2fc_interface_put(interface);
2187 /* put netdev that was held while calling dev_get_by_name */
2188 mutex_unlock(&bnx2fc_dev_lock);
2193 destroy_workqueue(interface->timer_work_queue);
2195 bnx2fc_net_cleanup(interface);
2196 bnx2fc_interface_put(interface);
2199 module_put(THIS_MODULE);
2201 mutex_unlock(&bnx2fc_dev_lock);
2207 * bnx2fc_create() - Create a bnx2fc interface
2208 * @netdev : The net_device object the Ethernet interface to create on
2209 * @fip_mode: The FIP mode for this creation
2211 * Called from fcoe transport
2213 * Returns: 0 for success
2215 static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
2217 return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2221 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2222 * @netdev: The net_device to be used by the allocated FCoE Controller
2224 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2225 * in a link_down state. The allows the user an opportunity to configure
2226 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2228 * Creating in with this routine starts the FCoE Controller in Fabric
2229 * mode. The user can change to VN2VN or another mode before enabling.
2231 static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2233 return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2234 BNX2FC_CREATE_LINK_DOWN);
2238 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2240 * @cnic: Pointer to cnic device instance
2243 static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2245 struct bnx2fc_hba *hba;
2247 /* Called with bnx2fc_dev_lock held */
2248 list_for_each_entry(hba, &adapter_list, list) {
2249 if (hba->cnic == cnic)
2255 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2258 struct bnx2fc_interface *interface;
2260 /* Called with bnx2fc_dev_lock held */
2261 list_for_each_entry(interface, &if_list, list) {
2262 if (interface->netdev == netdev)
2268 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2271 struct bnx2fc_hba *hba;
2273 /* Called with bnx2fc_dev_lock held */
2274 list_for_each_entry(hba, &adapter_list, list) {
2275 if (hba->phys_dev == phys_dev)
2278 printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2283 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2285 * @dev cnic device handle
2287 static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2289 struct bnx2fc_hba *hba;
2290 struct bnx2fc_interface *interface, *tmp;
2292 BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2294 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2295 printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2296 dev->netdev->name, dev->flags);
2300 mutex_lock(&bnx2fc_dev_lock);
2301 hba = bnx2fc_find_hba_for_cnic(dev);
2303 printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2305 mutex_unlock(&bnx2fc_dev_lock);
2309 list_del_init(&hba->list);
2312 list_for_each_entry_safe(interface, tmp, &if_list, list)
2313 /* destroy not called yet, move to quiesced list */
2314 if (interface->hba == hba)
2315 __bnx2fc_destroy(interface);
2316 mutex_unlock(&bnx2fc_dev_lock);
2318 bnx2fc_ulp_stop(hba);
2319 /* unregister cnic device */
2320 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2321 hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2322 bnx2fc_hba_destroy(hba);
2326 * bnx2fc_fcoe_reset - Resets the fcoe
2328 * @shost: shost the reset is from
2332 static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2334 struct fc_lport *lport = shost_priv(shost);
2335 fc_lport_reset(lport);
2340 static bool bnx2fc_match(struct net_device *netdev)
2342 struct net_device *phys_dev = netdev;
2344 mutex_lock(&bnx2fc_dev_lock);
2345 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2346 phys_dev = vlan_dev_real_dev(netdev);
2348 if (bnx2fc_hba_lookup(phys_dev)) {
2349 mutex_unlock(&bnx2fc_dev_lock);
2353 mutex_unlock(&bnx2fc_dev_lock);
2358 static struct fcoe_transport bnx2fc_transport = {
2361 .list = LIST_HEAD_INIT(bnx2fc_transport.list),
2362 .alloc = bnx2fc_ctlr_alloc,
2363 .match = bnx2fc_match,
2364 .create = bnx2fc_create,
2365 .destroy = bnx2fc_destroy,
2366 .enable = bnx2fc_enable,
2367 .disable = bnx2fc_disable,
2371 * bnx2fc_percpu_thread_create - Create a receive thread for an
2374 * @cpu: cpu index for the online cpu
2376 static void bnx2fc_percpu_thread_create(unsigned int cpu)
2378 struct bnx2fc_percpu_s *p;
2379 struct task_struct *thread;
2381 p = &per_cpu(bnx2fc_percpu, cpu);
2383 thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
2384 (void *)p, cpu_to_node(cpu),
2385 "bnx2fc_thread/%d", cpu);
2386 /* bind thread to the cpu */
2387 if (likely(!IS_ERR(thread))) {
2388 kthread_bind(thread, cpu);
2389 p->iothread = thread;
2390 wake_up_process(thread);
2394 static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
2396 struct bnx2fc_percpu_s *p;
2397 struct task_struct *thread;
2398 struct bnx2fc_work *work, *tmp;
2400 BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2402 /* Prevent any new work from being queued for this CPU */
2403 p = &per_cpu(bnx2fc_percpu, cpu);
2404 spin_lock_bh(&p->fp_work_lock);
2405 thread = p->iothread;
2409 /* Free all work in the list */
2410 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2411 list_del_init(&work->list);
2412 bnx2fc_process_cq_compl(work->tgt, work->wqe);
2416 spin_unlock_bh(&p->fp_work_lock);
2419 kthread_stop(thread);
2423 * bnx2fc_cpu_callback - Handler for CPU hotplug events
2425 * @nfb: The callback data block
2426 * @action: The event triggering the callback
2427 * @hcpu: The index of the CPU that the event is for
2429 * This creates or destroys per-CPU data for fcoe
2431 * Returns NOTIFY_OK always.
2433 static int bnx2fc_cpu_callback(struct notifier_block *nfb,
2434 unsigned long action, void *hcpu)
2436 unsigned cpu = (unsigned long)hcpu;
2440 case CPU_ONLINE_FROZEN:
2441 printk(PFX "CPU %x online: Create Rx thread\n", cpu);
2442 bnx2fc_percpu_thread_create(cpu);
2445 case CPU_DEAD_FROZEN:
2446 printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
2447 bnx2fc_percpu_thread_destroy(cpu);
2456 * bnx2fc_mod_init - module init entry point
2458 * Initialize driver wide global data structures, and register
2461 static int __init bnx2fc_mod_init(void)
2463 struct fcoe_percpu_s *bg;
2464 struct task_struct *l2_thread;
2466 unsigned int cpu = 0;
2467 struct bnx2fc_percpu_s *p;
2469 printk(KERN_INFO PFX "%s", version);
2471 /* register as a fcoe transport */
2472 rc = fcoe_transport_attach(&bnx2fc_transport);
2474 printk(KERN_ERR "failed to register an fcoe transport, check "
2475 "if libfcoe is loaded\n");
2479 INIT_LIST_HEAD(&adapter_list);
2480 INIT_LIST_HEAD(&if_list);
2481 mutex_init(&bnx2fc_dev_lock);
2484 /* Attach FC transport template */
2485 rc = bnx2fc_attach_transport();
2489 bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
2495 bg = &bnx2fc_global;
2496 skb_queue_head_init(&bg->fcoe_rx_list);
2497 l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
2499 "bnx2fc_l2_thread");
2500 if (IS_ERR(l2_thread)) {
2501 rc = PTR_ERR(l2_thread);
2504 wake_up_process(l2_thread);
2505 spin_lock_bh(&bg->fcoe_rx_list.lock);
2506 bg->thread = l2_thread;
2507 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2509 for_each_possible_cpu(cpu) {
2510 p = &per_cpu(bnx2fc_percpu, cpu);
2511 INIT_LIST_HEAD(&p->work_list);
2512 spin_lock_init(&p->fp_work_lock);
2515 for_each_online_cpu(cpu) {
2516 bnx2fc_percpu_thread_create(cpu);
2519 /* Initialize per CPU interrupt thread */
2520 register_hotcpu_notifier(&bnx2fc_cpu_notifier);
2522 cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2527 destroy_workqueue(bnx2fc_wq);
2529 bnx2fc_release_transport();
2531 fcoe_transport_detach(&bnx2fc_transport);
2536 static void __exit bnx2fc_mod_exit(void)
2538 LIST_HEAD(to_be_deleted);
2539 struct bnx2fc_hba *hba, *next;
2540 struct fcoe_percpu_s *bg;
2541 struct task_struct *l2_thread;
2542 struct sk_buff *skb;
2543 unsigned int cpu = 0;
2546 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2547 * it will have higher precedence than bnx2fc_dev_lock.
2548 * unregister_device() cannot be called with bnx2fc_dev_lock
2551 mutex_lock(&bnx2fc_dev_lock);
2552 list_splice(&adapter_list, &to_be_deleted);
2553 INIT_LIST_HEAD(&adapter_list);
2555 mutex_unlock(&bnx2fc_dev_lock);
2557 /* Unregister with cnic */
2558 list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2559 list_del_init(&hba->list);
2560 printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2562 bnx2fc_ulp_stop(hba);
2563 /* unregister cnic device */
2564 if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2565 &hba->reg_with_cnic))
2566 hba->cnic->unregister_device(hba->cnic,
2568 bnx2fc_hba_destroy(hba);
2570 cnic_unregister_driver(CNIC_ULP_FCOE);
2572 /* Destroy global thread */
2573 bg = &bnx2fc_global;
2574 spin_lock_bh(&bg->fcoe_rx_list.lock);
2575 l2_thread = bg->thread;
2577 while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2580 spin_unlock_bh(&bg->fcoe_rx_list.lock);
2583 kthread_stop(l2_thread);
2585 unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
2587 /* Destroy per cpu threads */
2588 for_each_online_cpu(cpu) {
2589 bnx2fc_percpu_thread_destroy(cpu);
2592 destroy_workqueue(bnx2fc_wq);
2594 * detach from scsi transport
2595 * must happen after all destroys are done
2597 bnx2fc_release_transport();
2599 /* detach from fcoe transport */
2600 fcoe_transport_detach(&bnx2fc_transport);
2603 module_init(bnx2fc_mod_init);
2604 module_exit(bnx2fc_mod_exit);
2606 static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2607 .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2608 .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2609 .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2610 .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2611 .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2612 .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2613 .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2615 .get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2616 .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2619 static struct fc_function_template bnx2fc_transport_function = {
2620 .show_host_node_name = 1,
2621 .show_host_port_name = 1,
2622 .show_host_supported_classes = 1,
2623 .show_host_supported_fc4s = 1,
2624 .show_host_active_fc4s = 1,
2625 .show_host_maxframe_size = 1,
2627 .show_host_port_id = 1,
2628 .show_host_supported_speeds = 1,
2629 .get_host_speed = fc_get_host_speed,
2630 .show_host_speed = 1,
2631 .show_host_port_type = 1,
2632 .get_host_port_state = fc_get_host_port_state,
2633 .show_host_port_state = 1,
2634 .show_host_symbolic_name = 1,
2636 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2637 sizeof(struct bnx2fc_rport)),
2638 .show_rport_maxframe_size = 1,
2639 .show_rport_supported_classes = 1,
2641 .show_host_fabric_name = 1,
2642 .show_starget_node_name = 1,
2643 .show_starget_port_name = 1,
2644 .show_starget_port_id = 1,
2645 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2646 .show_rport_dev_loss_tmo = 1,
2647 .get_fc_host_stats = bnx2fc_get_host_stats,
2649 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2651 .terminate_rport_io = fc_rport_terminate_io,
2653 .vport_create = bnx2fc_vport_create,
2654 .vport_delete = bnx2fc_vport_destroy,
2655 .vport_disable = bnx2fc_vport_disable,
2656 .bsg_request = fc_lport_bsg_request,
2659 static struct fc_function_template bnx2fc_vport_xport_function = {
2660 .show_host_node_name = 1,
2661 .show_host_port_name = 1,
2662 .show_host_supported_classes = 1,
2663 .show_host_supported_fc4s = 1,
2664 .show_host_active_fc4s = 1,
2665 .show_host_maxframe_size = 1,
2667 .show_host_port_id = 1,
2668 .show_host_supported_speeds = 1,
2669 .get_host_speed = fc_get_host_speed,
2670 .show_host_speed = 1,
2671 .show_host_port_type = 1,
2672 .get_host_port_state = fc_get_host_port_state,
2673 .show_host_port_state = 1,
2674 .show_host_symbolic_name = 1,
2676 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2677 sizeof(struct bnx2fc_rport)),
2678 .show_rport_maxframe_size = 1,
2679 .show_rport_supported_classes = 1,
2681 .show_host_fabric_name = 1,
2682 .show_starget_node_name = 1,
2683 .show_starget_port_name = 1,
2684 .show_starget_port_id = 1,
2685 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2686 .show_rport_dev_loss_tmo = 1,
2687 .get_fc_host_stats = fc_get_host_stats,
2688 .issue_fc_host_lip = bnx2fc_fcoe_reset,
2689 .terminate_rport_io = fc_rport_terminate_io,
2690 .bsg_request = fc_lport_bsg_request,
2694 * scsi_host_template structure used while registering with SCSI-ml
2696 static struct scsi_host_template bnx2fc_shost_template = {
2697 .module = THIS_MODULE,
2698 .name = "Broadcom Offload FCoE Initiator",
2699 .queuecommand = bnx2fc_queuecommand,
2700 .eh_abort_handler = bnx2fc_eh_abort, /* abts */
2701 .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2702 .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2703 .eh_host_reset_handler = fc_eh_host_reset,
2704 .slave_alloc = fc_slave_alloc,
2705 .change_queue_depth = fc_change_queue_depth,
2706 .change_queue_type = fc_change_queue_type,
2709 .can_queue = BNX2FC_CAN_QUEUE,
2710 .use_clustering = ENABLE_CLUSTERING,
2711 .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
2712 .max_sectors = 1024,
2715 static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2716 .frame_send = bnx2fc_xmit,
2717 .elsct_send = bnx2fc_elsct_send,
2718 .fcp_abort_io = bnx2fc_abort_io,
2719 .fcp_cleanup = bnx2fc_cleanup,
2720 .get_lesb = fcoe_get_lesb,
2721 .rport_event_callback = bnx2fc_rport_event_handler,
2725 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2726 * structure carrying callback function pointers
2728 static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2729 .owner = THIS_MODULE,
2730 .cnic_init = bnx2fc_ulp_init,
2731 .cnic_exit = bnx2fc_ulp_exit,
2732 .cnic_start = bnx2fc_ulp_start,
2733 .cnic_stop = bnx2fc_ulp_stop,
2734 .indicate_kcqes = bnx2fc_indicate_kcqe,
2735 .indicate_netevent = bnx2fc_indicate_netevent,
2736 .cnic_get_stats = bnx2fc_ulp_get_stats,