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);
943 fc_disc_config(lport, lport);
947 static int bnx2fc_em_config(struct fc_lport *lport)
952 max_xid = FCOE_XIDS_PER_CPU;
954 max_xid = FCOE_MAX_XID;
955 if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID,
957 printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
964 static int bnx2fc_lport_config(struct fc_lport *lport)
968 lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
969 lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
970 lport->e_d_tov = 2 * 1000;
971 lport->r_a_tov = 10 * 1000;
973 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
974 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
975 lport->does_npiv = 1;
977 memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
978 lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
980 /* alloc stats structure */
981 if (fc_lport_init_stats(lport))
984 /* Finish fc_lport configuration */
985 fc_lport_config(lport);
991 * bnx2fc_fip_recv - handle a received FIP frame.
993 * @skb: the received skb
994 * @dev: associated &net_device
995 * @ptype: the &packet_type structure which was used to register this handler.
996 * @orig_dev: original receive &net_device, in case @ dev is a bond.
998 * Returns: 0 for success
1000 static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1001 struct packet_type *ptype,
1002 struct net_device *orig_dev)
1004 struct bnx2fc_interface *interface;
1005 struct fcoe_ctlr *ctlr;
1006 interface = container_of(ptype, struct bnx2fc_interface,
1008 ctlr = bnx2fc_to_ctlr(interface);
1009 fcoe_ctlr_recv(ctlr, skb);
1014 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1016 * @fip: FCoE controller.
1017 * @old: Unicast MAC address to delete if the MAC is non-zero.
1018 * @new: Unicast MAC address to add.
1020 * Remove any previously-set unicast MAC filter.
1021 * Add secondary FCoE MAC address filter for our OUI.
1023 static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1025 struct fcoe_port *port = lport_priv(lport);
1027 memcpy(port->data_src_addr, addr, ETH_ALEN);
1031 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1033 * @lport: libfc port
1035 static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1037 struct fcoe_port *port;
1039 port = (struct fcoe_port *)lport_priv(lport);
1040 return port->data_src_addr;
1044 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1046 * @fip: FCoE controller.
1049 static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1051 skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1052 dev_queue_xmit(skb);
1055 static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1057 struct Scsi_Host *shost = vport_to_shost(vport);
1058 struct fc_lport *n_port = shost_priv(shost);
1059 struct fcoe_port *port = lport_priv(n_port);
1060 struct bnx2fc_interface *interface = port->priv;
1061 struct net_device *netdev = interface->netdev;
1062 struct fc_lport *vn_port;
1066 rc = fcoe_validate_vport_create(vport);
1068 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1069 printk(KERN_ERR PFX "Failed to create vport, "
1070 "WWPN (0x%s) already exists\n",
1075 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1076 printk(KERN_ERR PFX "vn ports cannot be created on"
1077 "this interface\n");
1081 mutex_lock(&bnx2fc_dev_lock);
1082 vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1083 mutex_unlock(&bnx2fc_dev_lock);
1086 if (IS_ERR(vn_port)) {
1087 printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1093 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1095 vn_port->boot_time = jiffies;
1096 fc_lport_init(vn_port);
1097 fc_fabric_login(vn_port);
1098 fc_vport_setlink(vn_port);
1103 static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1105 struct bnx2fc_lport *blport, *tmp;
1107 spin_lock_bh(&hba->hba_lock);
1108 list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1109 if (blport->lport == lport) {
1110 list_del(&blport->list);
1114 spin_unlock_bh(&hba->hba_lock);
1117 static int bnx2fc_vport_destroy(struct fc_vport *vport)
1119 struct Scsi_Host *shost = vport_to_shost(vport);
1120 struct fc_lport *n_port = shost_priv(shost);
1121 struct fc_lport *vn_port = vport->dd_data;
1122 struct fcoe_port *port = lport_priv(vn_port);
1123 struct bnx2fc_interface *interface = port->priv;
1124 struct fc_lport *v_port;
1127 mutex_lock(&n_port->lp_mutex);
1128 list_for_each_entry(v_port, &n_port->vports, list)
1129 if (v_port->vport == vport) {
1135 mutex_unlock(&n_port->lp_mutex);
1138 list_del(&vn_port->list);
1139 mutex_unlock(&n_port->lp_mutex);
1140 bnx2fc_free_vport(interface->hba, port->lport);
1141 bnx2fc_port_shutdown(port->lport);
1142 bnx2fc_interface_put(interface);
1143 queue_work(bnx2fc_wq, &port->destroy_work);
1147 static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1149 struct fc_lport *lport = vport->dd_data;
1152 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1153 fc_fabric_logoff(lport);
1155 lport->boot_time = jiffies;
1156 fc_fabric_login(lport);
1157 fc_vport_setlink(lport);
1163 static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1165 struct net_device *netdev = interface->netdev;
1166 struct net_device *physdev = interface->hba->phys_dev;
1167 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1168 struct netdev_hw_addr *ha;
1169 int sel_san_mac = 0;
1171 /* setup Source MAC Address */
1173 for_each_dev_addr(physdev, ha) {
1174 BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1176 printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1177 ha->addr[1], ha->addr[2], ha->addr[3],
1178 ha->addr[4], ha->addr[5]);
1180 if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1181 (is_valid_ether_addr(ha->addr))) {
1182 memcpy(ctlr->ctl_src_addr, ha->addr,
1185 BNX2FC_MISC_DBG("Found SAN MAC\n");
1193 interface->fip_packet_type.func = bnx2fc_fip_recv;
1194 interface->fip_packet_type.type = htons(ETH_P_FIP);
1195 interface->fip_packet_type.dev = netdev;
1196 dev_add_pack(&interface->fip_packet_type);
1198 interface->fcoe_packet_type.func = bnx2fc_rcv;
1199 interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1200 interface->fcoe_packet_type.dev = netdev;
1201 dev_add_pack(&interface->fcoe_packet_type);
1206 static int bnx2fc_attach_transport(void)
1208 bnx2fc_transport_template =
1209 fc_attach_transport(&bnx2fc_transport_function);
1211 if (bnx2fc_transport_template == NULL) {
1212 printk(KERN_ERR PFX "Failed to attach FC transport\n");
1216 bnx2fc_vport_xport_template =
1217 fc_attach_transport(&bnx2fc_vport_xport_function);
1218 if (bnx2fc_vport_xport_template == NULL) {
1220 "Failed to attach FC transport for vport\n");
1221 fc_release_transport(bnx2fc_transport_template);
1222 bnx2fc_transport_template = NULL;
1227 static void bnx2fc_release_transport(void)
1229 fc_release_transport(bnx2fc_transport_template);
1230 fc_release_transport(bnx2fc_vport_xport_template);
1231 bnx2fc_transport_template = NULL;
1232 bnx2fc_vport_xport_template = NULL;
1235 static void bnx2fc_interface_release(struct kref *kref)
1237 struct fcoe_ctlr_device *ctlr_dev;
1238 struct bnx2fc_interface *interface;
1239 struct fcoe_ctlr *ctlr;
1240 struct net_device *netdev;
1242 interface = container_of(kref, struct bnx2fc_interface, kref);
1243 BNX2FC_MISC_DBG("Interface is being released\n");
1245 ctlr = bnx2fc_to_ctlr(interface);
1246 ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1247 netdev = interface->netdev;
1249 /* tear-down FIP controller */
1250 if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1251 fcoe_ctlr_destroy(ctlr);
1253 fcoe_ctlr_device_delete(ctlr_dev);
1256 module_put(THIS_MODULE);
1259 static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1261 kref_get(&interface->kref);
1264 static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1266 kref_put(&interface->kref, bnx2fc_interface_release);
1268 static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1270 /* Free the command manager */
1272 bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1273 hba->cmd_mgr = NULL;
1275 kfree(hba->tgt_ofld_list);
1276 bnx2fc_unbind_pcidev(hba);
1281 * bnx2fc_hba_create - create a new bnx2fc hba
1283 * @cnic: pointer to cnic device
1285 * Creates a new FCoE hba on the given device.
1288 static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1290 struct bnx2fc_hba *hba;
1291 struct fcoe_capabilities *fcoe_cap;
1294 hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1296 printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1299 spin_lock_init(&hba->hba_lock);
1300 mutex_init(&hba->hba_mutex);
1303 rc = bnx2fc_bind_pcidev(hba);
1305 printk(KERN_ERR PFX "create_adapter: bind error\n");
1308 hba->phys_dev = cnic->netdev;
1309 hba->next_conn_id = 0;
1311 hba->tgt_ofld_list =
1312 kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
1314 if (!hba->tgt_ofld_list) {
1315 printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1319 hba->num_ofld_sess = 0;
1321 hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID,
1323 if (!hba->cmd_mgr) {
1324 printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1327 fcoe_cap = &hba->fcoe_cap;
1329 fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1330 FCOE_IOS_PER_CONNECTION_SHIFT;
1331 fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1332 FCOE_LOGINS_PER_PORT_SHIFT;
1333 fcoe_cap->capability2 = BNX2FC_MAX_OUTSTANDING_CMNDS <<
1334 FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1335 fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1336 FCOE_NPIV_WWN_PER_PORT_SHIFT;
1337 fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1338 FCOE_TARGETS_SUPPORTED_SHIFT;
1339 fcoe_cap->capability3 |= BNX2FC_MAX_OUTSTANDING_CMNDS <<
1340 FCOE_OUTSTANDING_COMMANDS_SHIFT;
1341 fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1343 init_waitqueue_head(&hba->shutdown_wait);
1344 init_waitqueue_head(&hba->destroy_wait);
1345 INIT_LIST_HEAD(&hba->vports);
1350 kfree(hba->tgt_ofld_list);
1352 bnx2fc_unbind_pcidev(hba);
1358 struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
1359 struct net_device *netdev,
1360 enum fip_state fip_mode)
1362 struct fcoe_ctlr_device *ctlr_dev;
1363 struct bnx2fc_interface *interface;
1364 struct fcoe_ctlr *ctlr;
1368 size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1369 ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1372 printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1375 ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1376 interface = fcoe_ctlr_priv(ctlr);
1378 kref_init(&interface->kref);
1379 interface->hba = hba;
1380 interface->netdev = netdev;
1382 /* Initialize FIP */
1383 fcoe_ctlr_init(ctlr, fip_mode);
1384 ctlr->send = bnx2fc_fip_send;
1385 ctlr->update_mac = bnx2fc_update_src_mac;
1386 ctlr->get_src_addr = bnx2fc_get_src_mac;
1387 set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1389 rc = bnx2fc_interface_setup(interface);
1393 fcoe_ctlr_destroy(ctlr);
1395 fcoe_ctlr_device_delete(ctlr_dev);
1400 * bnx2fc_if_create - Create FCoE instance on a given interface
1402 * @interface: FCoE interface to create a local port on
1403 * @parent: Device pointer to be the parent in sysfs for the SCSI host
1404 * @npiv: Indicates if the port is vport or not
1406 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1408 * Returns: Allocated fc_lport or an error pointer
1410 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1411 struct device *parent, int npiv)
1413 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1414 struct fc_lport *lport, *n_port;
1415 struct fcoe_port *port;
1416 struct Scsi_Host *shost;
1417 struct fc_vport *vport = dev_to_vport(parent);
1418 struct bnx2fc_lport *blport;
1419 struct bnx2fc_hba *hba;
1422 blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1424 BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1428 /* Allocate Scsi_Host structure */
1430 lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1432 lport = libfc_vport_create(vport, sizeof(*port));
1435 printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1438 shost = lport->host;
1439 port = lport_priv(lport);
1440 port->lport = lport;
1441 port->priv = interface;
1442 port->get_netdev = bnx2fc_netdev;
1443 INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
1445 /* Configure fcoe_port */
1446 rc = bnx2fc_lport_config(lport);
1451 printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1452 vport->node_name, vport->port_name);
1453 fc_set_wwnn(lport, vport->node_name);
1454 fc_set_wwpn(lport, vport->port_name);
1456 /* Configure netdev and networking properties of the lport */
1457 rc = bnx2fc_net_config(lport, interface->netdev);
1459 printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1463 rc = bnx2fc_shost_config(lport, parent);
1465 printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
1466 interface->netdev->name);
1470 /* Initialize the libfc library */
1471 rc = bnx2fc_libfc_config(lport);
1473 printk(KERN_ERR PFX "Couldnt configure libfc\n");
1476 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1478 /* Allocate exchange manager */
1480 rc = bnx2fc_em_config(lport);
1482 shost = vport_to_shost(vport);
1483 n_port = shost_priv(shost);
1484 rc = fc_exch_mgr_list_clone(n_port, lport);
1488 printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1492 bnx2fc_interface_get(interface);
1494 hba = interface->hba;
1495 spin_lock_bh(&hba->hba_lock);
1496 blport->lport = lport;
1497 list_add_tail(&blport->list, &hba->vports);
1498 spin_unlock_bh(&hba->hba_lock);
1503 scsi_remove_host(shost);
1505 scsi_host_put(lport->host);
1511 static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1513 /* Dont listen for Ethernet packets anymore */
1514 __dev_remove_pack(&interface->fcoe_packet_type);
1515 __dev_remove_pack(&interface->fip_packet_type);
1519 static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1521 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1522 struct fc_lport *lport = ctlr->lp;
1523 struct fcoe_port *port = lport_priv(lport);
1524 struct bnx2fc_hba *hba = interface->hba;
1526 /* Stop the transmit retry timer */
1527 del_timer_sync(&port->timer);
1529 /* Free existing transmit skbs */
1530 fcoe_clean_pending_queue(lport);
1532 bnx2fc_net_cleanup(interface);
1534 bnx2fc_free_vport(hba, lport);
1537 static void bnx2fc_if_destroy(struct fc_lport *lport)
1540 /* Free queued packets for the receive thread */
1541 bnx2fc_clean_rx_queue(lport);
1543 /* Detach from scsi-ml */
1544 fc_remove_host(lport->host);
1545 scsi_remove_host(lport->host);
1548 * Note that only the physical lport will have the exchange manager.
1549 * for vports, this function is NOP
1551 fc_exch_mgr_free(lport);
1553 /* Free memory used by statistical counters */
1554 fc_lport_free_stats(lport);
1556 /* Release Scsi_Host */
1557 scsi_host_put(lport->host);
1560 static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1562 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1563 struct fc_lport *lport = ctlr->lp;
1564 struct fcoe_port *port = lport_priv(lport);
1566 bnx2fc_interface_cleanup(interface);
1567 bnx2fc_stop(interface);
1568 list_del(&interface->list);
1569 bnx2fc_interface_put(interface);
1570 queue_work(bnx2fc_wq, &port->destroy_work);
1574 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1576 * @buffer: The name of the Ethernet interface to be destroyed
1577 * @kp: The associated kernel parameter
1579 * Called from sysfs.
1581 * Returns: 0 for success
1583 static int bnx2fc_destroy(struct net_device *netdev)
1585 struct bnx2fc_interface *interface = NULL;
1586 struct workqueue_struct *timer_work_queue;
1587 struct fcoe_ctlr *ctlr;
1591 mutex_lock(&bnx2fc_dev_lock);
1593 interface = bnx2fc_interface_lookup(netdev);
1594 ctlr = bnx2fc_to_ctlr(interface);
1595 if (!interface || !ctlr->lp) {
1597 printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1601 timer_work_queue = interface->timer_work_queue;
1602 __bnx2fc_destroy(interface);
1603 destroy_workqueue(timer_work_queue);
1606 mutex_unlock(&bnx2fc_dev_lock);
1611 static void bnx2fc_destroy_work(struct work_struct *work)
1613 struct fcoe_port *port;
1614 struct fc_lport *lport;
1616 port = container_of(work, struct fcoe_port, destroy_work);
1617 lport = port->lport;
1619 BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
1621 bnx2fc_if_destroy(lport);
1624 static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1626 bnx2fc_free_fw_resc(hba);
1627 bnx2fc_free_task_ctx(hba);
1631 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1634 * @hba: Adapter instance
1636 static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1638 if (bnx2fc_setup_task_ctx(hba))
1641 if (bnx2fc_setup_fw_resc(hba))
1646 bnx2fc_unbind_adapter_devices(hba);
1650 static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1652 struct cnic_dev *cnic;
1655 printk(KERN_ERR PFX "cnic is NULL\n");
1659 hba->pcidev = cnic->pcidev;
1661 pci_dev_get(hba->pcidev);
1666 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1669 pci_dev_put(hba->pcidev);
1674 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1676 * @handle: transport handle pointing to adapter struture
1678 static int bnx2fc_ulp_get_stats(void *handle)
1680 struct bnx2fc_hba *hba = handle;
1681 struct cnic_dev *cnic;
1682 struct fcoe_stats_info *stats_addr;
1688 stats_addr = &cnic->stats_addr->fcoe_stat;
1692 strncpy(stats_addr->version, BNX2FC_VERSION,
1693 sizeof(stats_addr->version));
1694 stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1695 stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1702 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1704 * @handle: transport handle pointing to adapter structure
1706 * This function maps adapter structure to pcidev structure and initiates
1707 * firmware handshake to enable/initialize on-chip FCoE components.
1708 * This bnx2fc - cnic interface api callback is used after following
1709 * conditions are met -
1710 * a) underlying network interface is up (marked by event NETDEV_UP
1712 * b) bnx2fc adatper structure is registered.
1714 static void bnx2fc_ulp_start(void *handle)
1716 struct bnx2fc_hba *hba = handle;
1717 struct bnx2fc_interface *interface;
1718 struct fcoe_ctlr *ctlr;
1719 struct fc_lport *lport;
1721 mutex_lock(&bnx2fc_dev_lock);
1723 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1724 bnx2fc_fw_init(hba);
1726 BNX2FC_MISC_DBG("bnx2fc started.\n");
1728 list_for_each_entry(interface, &if_list, list) {
1729 if (interface->hba == hba) {
1730 ctlr = bnx2fc_to_ctlr(interface);
1732 /* Kick off Fabric discovery*/
1733 printk(KERN_ERR PFX "ulp_init: start discovery\n");
1734 lport->tt.frame_send = bnx2fc_xmit;
1735 bnx2fc_start_disc(interface);
1739 mutex_unlock(&bnx2fc_dev_lock);
1742 static void bnx2fc_port_shutdown(struct fc_lport *lport)
1744 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1745 fc_fabric_logoff(lport);
1746 fc_lport_destroy(lport);
1749 static void bnx2fc_stop(struct bnx2fc_interface *interface)
1751 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1752 struct fc_lport *lport;
1753 struct fc_lport *vport;
1755 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1759 bnx2fc_port_shutdown(lport);
1761 mutex_lock(&lport->lp_mutex);
1762 list_for_each_entry(vport, &lport->vports, list)
1763 fc_host_port_type(vport->host) =
1764 FC_PORTTYPE_UNKNOWN;
1765 mutex_unlock(&lport->lp_mutex);
1766 fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1767 fcoe_ctlr_link_down(ctlr);
1768 fcoe_clean_pending_queue(lport);
1771 static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1773 #define BNX2FC_INIT_POLL_TIME (1000 / HZ)
1777 rc = bnx2fc_bind_adapter_devices(hba);
1779 printk(KERN_ALERT PFX
1780 "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1784 rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1786 printk(KERN_ALERT PFX
1787 "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1792 * Wait until the adapter init message is complete, and adapter
1795 while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1796 msleep(BNX2FC_INIT_POLL_TIME);
1798 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1799 printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
1801 hba->cnic->netdev->name);
1807 set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1811 bnx2fc_unbind_adapter_devices(hba);
1816 static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1818 if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1819 if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1820 init_timer(&hba->destroy_timer);
1821 hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1823 hba->destroy_timer.function = bnx2fc_destroy_timer;
1824 hba->destroy_timer.data = (unsigned long)hba;
1825 add_timer(&hba->destroy_timer);
1826 wait_event_interruptible(hba->destroy_wait,
1827 test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1829 clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1830 /* This should never happen */
1831 if (signal_pending(current))
1832 flush_signals(current);
1834 del_timer_sync(&hba->destroy_timer);
1836 bnx2fc_unbind_adapter_devices(hba);
1841 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1843 * @handle: transport handle pointing to adapter structure
1845 * Driver checks if adapter is already in shutdown mode, if not start
1846 * the shutdown process.
1848 static void bnx2fc_ulp_stop(void *handle)
1850 struct bnx2fc_hba *hba = handle;
1851 struct bnx2fc_interface *interface;
1853 printk(KERN_ERR "ULP_STOP\n");
1855 mutex_lock(&bnx2fc_dev_lock);
1856 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1858 list_for_each_entry(interface, &if_list, list) {
1859 if (interface->hba == hba)
1860 bnx2fc_stop(interface);
1862 BUG_ON(hba->num_ofld_sess != 0);
1864 mutex_lock(&hba->hba_mutex);
1865 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1866 clear_bit(ADAPTER_STATE_GOING_DOWN,
1867 &hba->adapter_state);
1869 clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1870 mutex_unlock(&hba->hba_mutex);
1872 bnx2fc_fw_destroy(hba);
1874 mutex_unlock(&bnx2fc_dev_lock);
1877 static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1879 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1880 struct fc_lport *lport;
1883 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1884 /* Kick off FIP/FLOGI */
1885 if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1886 printk(KERN_ERR PFX "Init not done yet\n");
1891 BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1893 if (!bnx2fc_link_ok(lport) && interface->enabled) {
1894 BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
1895 fcoe_ctlr_link_up(ctlr);
1896 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1897 set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
1900 /* wait for the FCF to be selected before issuing FLOGI */
1901 while (!ctlr->sel_fcf) {
1903 /* give up after 3 secs */
1904 if (++wait_cnt > 12)
1908 /* Reset max receive frame size to default */
1909 if (fc_set_mfs(lport, BNX2FC_MFS))
1912 fc_lport_init(lport);
1913 fc_fabric_login(lport);
1918 * bnx2fc_ulp_init - Initialize an adapter instance
1920 * @dev : cnic device handle
1921 * Called from cnic_register_driver() context to initialize all
1922 * enumerated cnic devices. This routine allocates adapter structure
1923 * and other device specific resources.
1925 static void bnx2fc_ulp_init(struct cnic_dev *dev)
1927 struct bnx2fc_hba *hba;
1930 BNX2FC_MISC_DBG("Entered %s\n", __func__);
1931 /* bnx2fc works only when bnx2x is loaded */
1932 if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
1933 (dev->max_fcoe_conn == 0)) {
1934 printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
1935 " flags: %lx fcoe_conn: %d\n",
1936 dev->netdev->name, dev->flags, dev->max_fcoe_conn);
1940 hba = bnx2fc_hba_create(dev);
1942 printk(KERN_ERR PFX "hba initialization failed\n");
1946 /* Add HBA to the adapter list */
1947 mutex_lock(&bnx2fc_dev_lock);
1948 list_add_tail(&hba->list, &adapter_list);
1950 mutex_unlock(&bnx2fc_dev_lock);
1952 dev->fcoe_cap = &hba->fcoe_cap;
1953 clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1954 rc = dev->register_device(dev, CNIC_ULP_FCOE,
1957 printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
1959 set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
1963 * Deperecated: Use bnx2fc_enabled()
1965 static int bnx2fc_disable(struct net_device *netdev)
1967 struct bnx2fc_interface *interface;
1968 struct fcoe_ctlr *ctlr;
1972 mutex_lock(&bnx2fc_dev_lock);
1974 interface = bnx2fc_interface_lookup(netdev);
1975 ctlr = bnx2fc_to_ctlr(interface);
1976 if (!interface || !ctlr->lp) {
1978 printk(KERN_ERR PFX "bnx2fc_disable: interface or lport not found\n");
1980 interface->enabled = false;
1981 fcoe_ctlr_link_down(ctlr);
1982 fcoe_clean_pending_queue(ctlr->lp);
1985 mutex_unlock(&bnx2fc_dev_lock);
1991 * Deprecated: Use bnx2fc_enabled()
1993 static int bnx2fc_enable(struct net_device *netdev)
1995 struct bnx2fc_interface *interface;
1996 struct fcoe_ctlr *ctlr;
2000 mutex_lock(&bnx2fc_dev_lock);
2002 interface = bnx2fc_interface_lookup(netdev);
2003 ctlr = bnx2fc_to_ctlr(interface);
2004 if (!interface || !ctlr->lp) {
2006 printk(KERN_ERR PFX "bnx2fc_enable: interface or lport not found\n");
2007 } else if (!bnx2fc_link_ok(ctlr->lp)) {
2008 fcoe_ctlr_link_up(ctlr);
2009 interface->enabled = true;
2012 mutex_unlock(&bnx2fc_dev_lock);
2018 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2019 * @cdev: The FCoE Controller that is being enabled or disabled
2021 * fcoe_sysfs will ensure that the state of 'enabled' has
2022 * changed, so no checking is necessary here. This routine simply
2023 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2024 * When those routines are removed the functionality can be merged
2027 static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2029 struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2030 struct fc_lport *lport = ctlr->lp;
2031 struct net_device *netdev = bnx2fc_netdev(lport);
2033 switch (cdev->enabled) {
2034 case FCOE_CTLR_ENABLED:
2035 return bnx2fc_enable(netdev);
2036 case FCOE_CTLR_DISABLED:
2037 return bnx2fc_disable(netdev);
2038 case FCOE_CTLR_UNUSED:
2044 enum bnx2fc_create_link_state {
2045 BNX2FC_CREATE_LINK_DOWN,
2046 BNX2FC_CREATE_LINK_UP,
2050 * _bnx2fc_create() - Create bnx2fc FCoE interface
2051 * @netdev : The net_device object the Ethernet interface to create on
2052 * @fip_mode: The FIP mode for this creation
2053 * @link_state: The ctlr link state on creation
2055 * Called from either the libfcoe 'create' module parameter
2056 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2058 * libfcoe's 'create' module parameter is deprecated so some
2059 * consolidation of code can be done when that interface is
2062 * Returns: 0 for success
2064 static int _bnx2fc_create(struct net_device *netdev,
2065 enum fip_state fip_mode,
2066 enum bnx2fc_create_link_state link_state)
2068 struct fcoe_ctlr_device *cdev;
2069 struct fcoe_ctlr *ctlr;
2070 struct bnx2fc_interface *interface;
2071 struct bnx2fc_hba *hba;
2072 struct net_device *phys_dev = netdev;
2073 struct fc_lport *lport;
2074 struct ethtool_drvinfo drvinfo;
2078 BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2079 if (fip_mode != FIP_MODE_FABRIC) {
2080 printk(KERN_ERR "fip mode not FABRIC\n");
2086 mutex_lock(&bnx2fc_dev_lock);
2088 if (!try_module_get(THIS_MODULE)) {
2093 /* obtain physical netdev */
2094 if (netdev->priv_flags & IFF_802_1Q_VLAN)
2095 phys_dev = vlan_dev_real_dev(netdev);
2097 /* verify if the physical device is a netxtreme2 device */
2098 if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2099 memset(&drvinfo, 0, sizeof(drvinfo));
2100 phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2101 if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2102 printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2107 printk(KERN_ERR PFX "unable to obtain drv_info\n");
2112 /* obtain interface and initialize rest of the structure */
2113 hba = bnx2fc_hba_lookup(phys_dev);
2116 printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2120 if (bnx2fc_interface_lookup(netdev)) {
2125 interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2127 printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2131 if (netdev->priv_flags & IFF_802_1Q_VLAN) {
2132 vlan_id = vlan_dev_vlan_id(netdev);
2133 interface->vlan_enabled = 1;
2136 ctlr = bnx2fc_to_ctlr(interface);
2137 cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2138 interface->vlan_id = vlan_id;
2140 interface->timer_work_queue =
2141 create_singlethread_workqueue("bnx2fc_timer_wq");
2142 if (!interface->timer_work_queue) {
2143 printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2148 lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2150 printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2156 /* Add interface to if_list */
2157 list_add_tail(&interface->list, &if_list);
2159 lport->boot_time = jiffies;
2161 /* Make this master N_port */
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,