bnx2fc_fcoe.c

   1/* bnx2fc_fcoe.c: QLogic Linux FCoE offload driver.
   2 * This file contains the code that interacts with libfc, libfcoe,
   3 * cnic modules to create FCoE instances, send/receive non-offloaded
   4 * FIP/FCoE packets, listen to link events etc.
   5 *
   6 * Copyright (c) 2008-2013 Broadcom Corporation
   7 * Copyright (c) 2014-2016 QLogic Corporation
   8 * Copyright (c) 2016-2017 Cavium Inc.
   9 *
  10 * This program is free software; you can redistribute it and/or modify
  11 * it under the terms of the GNU General Public License as published by
  12 * the Free Software Foundation.
  13 *
  14 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
  15 */
  16
  17#include "bnx2fc.h"
  18
  19#include <linux/ethtool.h>
  20
  21static struct list_head adapter_list;
  22static struct list_head if_list;
  23static u32 adapter_count;
  24static DEFINE_MUTEX(bnx2fc_dev_lock);
  25DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
  26
  27#define DRV_MODULE_NAME		"bnx2fc"
  28#define DRV_MODULE_VERSION	BNX2FC_VERSION
  29#define DRV_MODULE_RELDATE	"October 15, 2015"
  30
  31
  32static char version[] =
  33		"QLogic FCoE Driver " DRV_MODULE_NAME \
  34		" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
  35
  36
  37MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
  38MODULE_DESCRIPTION("QLogic FCoE Driver");
  39MODULE_LICENSE("GPL");
  40MODULE_VERSION(DRV_MODULE_VERSION);
  41
  42#define BNX2FC_MAX_QUEUE_DEPTH	256
  43#define BNX2FC_MIN_QUEUE_DEPTH	32
  44#define FCOE_WORD_TO_BYTE  4
  45
  46static struct scsi_transport_template	*bnx2fc_transport_template;
  47static struct scsi_transport_template	*bnx2fc_vport_xport_template;
  48
  49struct workqueue_struct *bnx2fc_wq;
  50
  51/* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
  52 * Here the io threads are per cpu but the l2 thread is just one
  53 */
  54struct fcoe_percpu_s bnx2fc_global;
  55static DEFINE_SPINLOCK(bnx2fc_global_lock);
  56
  57static struct cnic_ulp_ops bnx2fc_cnic_cb;
  58static struct libfc_function_template bnx2fc_libfc_fcn_templ;
  59static struct scsi_host_template bnx2fc_shost_template;
  60static struct fc_function_template bnx2fc_transport_function;
  61static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
  62static struct fc_function_template bnx2fc_vport_xport_function;
  63static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode);
  64static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
  65static int bnx2fc_destroy(struct net_device *net_device);
  66static int bnx2fc_enable(struct net_device *netdev);
  67static int bnx2fc_disable(struct net_device *netdev);
  68
  69/* fcoe_syfs control interface handlers */
  70static int bnx2fc_ctlr_alloc(struct net_device *netdev);
  71static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
  72
  73static void bnx2fc_recv_frame(struct sk_buff *skb);
  74
  75static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
  76static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
  77static int bnx2fc_lport_config(struct fc_lport *lport);
  78static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
  79static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
  80static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
  81static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
  82static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
  83static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
  84				  struct device *parent, int npiv);
  85static void bnx2fc_port_destroy(struct fcoe_port *port);
  86
  87static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
  88static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
  89							*phys_dev);
  90static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
  91static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
  92
  93static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
  94static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
  95
  96static void bnx2fc_port_shutdown(struct fc_lport *lport);
  97static void bnx2fc_stop(struct bnx2fc_interface *interface);
  98static int __init bnx2fc_mod_init(void);
  99static void __exit bnx2fc_mod_exit(void);
 100
 101unsigned int bnx2fc_debug_level;
 102module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
 103MODULE_PARM_DESC(debug_logging,
 104		"Option to enable extended logging,\n"
 105		"\t\tDefault is 0 - no logging.\n"
 106		"\t\t0x01 - SCSI cmd error, cleanup.\n"
 107		"\t\t0x02 - Session setup, cleanup, etc.\n"
 108		"\t\t0x04 - lport events, link, mtu, etc.\n"
 109		"\t\t0x08 - ELS logs.\n"
 110		"\t\t0x10 - fcoe L2 fame related logs.\n"
 111		"\t\t0xff - LOG all messages.");
 112
 113static uint bnx2fc_devloss_tmo;
 114module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO);
 115MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports "
 116	"attached via bnx2fc.");
 117
 118static uint bnx2fc_max_luns = BNX2FC_MAX_LUN;
 119module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO);
 120MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default "
 121	"0xffff.");
 122
 123static uint bnx2fc_queue_depth;
 124module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO);
 125MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices "
 126	"attached via bnx2fc.");
 127
 128static uint bnx2fc_log_fka;
 129module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
 130MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
 131	"initiating a FIP keep alive when debug logging is enabled.");
 132
 133static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
 134{
 135	return ((struct bnx2fc_interface *)
 136		((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
 137}
 138
 139static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
 140{
 141	struct fcoe_ctlr_device *ctlr_dev =
 142		fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
 143	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
 144	struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
 145
 146	fcf_dev->vlan_id = fcoe->vlan_id;
 147}
 148
 149static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
 150{
 151	struct fcoe_percpu_s *bg;
 152	struct fcoe_rcv_info *fr;
 153	struct sk_buff_head *list;
 154	struct sk_buff *skb, *next;
 155
 156	bg = &bnx2fc_global;
 157	spin_lock_bh(&bg->fcoe_rx_list.lock);
 158	list = &bg->fcoe_rx_list;
 159	skb_queue_walk_safe(list, skb, next) {
 160		fr = fcoe_dev_from_skb(skb);
 161		if (fr->fr_dev == lp) {
 162			__skb_unlink(skb, list);
 163			kfree_skb(skb);
 164		}
 165	}
 166	spin_unlock_bh(&bg->fcoe_rx_list.lock);
 167}
 168
 169int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 170{
 171	int rc;
 172	spin_lock(&bnx2fc_global_lock);
 173	rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
 174	spin_unlock(&bnx2fc_global_lock);
 175
 176	return rc;
 177}
 178
 179static void bnx2fc_abort_io(struct fc_lport *lport)
 180{
 181	/*
 182	 * This function is no-op for bnx2fc, but we do
 183	 * not want to leave it as NULL either, as libfc
 184	 * can call the default function which is
 185	 * fc_fcp_abort_io.
 186	 */
 187}
 188
 189static void bnx2fc_cleanup(struct fc_lport *lport)
 190{
 191	struct fcoe_port *port = lport_priv(lport);
 192	struct bnx2fc_interface *interface = port->priv;
 193	struct bnx2fc_hba *hba = interface->hba;
 194	struct bnx2fc_rport *tgt;
 195	int i;
 196
 197	BNX2FC_MISC_DBG("Entered %s\n", __func__);
 198	mutex_lock(&hba->hba_mutex);
 199	spin_lock_bh(&hba->hba_lock);
 200	for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
 201		tgt = hba->tgt_ofld_list[i];
 202		if (tgt) {
 203			/* Cleanup IOs belonging to requested vport */
 204			if (tgt->port == port) {
 205				spin_unlock_bh(&hba->hba_lock);
 206				BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
 207				bnx2fc_flush_active_ios(tgt);
 208				spin_lock_bh(&hba->hba_lock);
 209			}
 210		}
 211	}
 212	spin_unlock_bh(&hba->hba_lock);
 213	mutex_unlock(&hba->hba_mutex);
 214}
 215
 216static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
 217			     struct fc_frame *fp)
 218{
 219	struct fc_rport_priv *rdata = tgt->rdata;
 220	struct fc_frame_header *fh;
 221	int rc = 0;
 222
 223	fh = fc_frame_header_get(fp);
 224	BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
 225			"r_ctl = 0x%x\n", rdata->ids.port_id,
 226			ntohs(fh->fh_ox_id), fh->fh_r_ctl);
 227	if ((fh->fh_type == FC_TYPE_ELS) &&
 228	    (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 229
 230		switch (fc_frame_payload_op(fp)) {
 231		case ELS_ADISC:
 232			rc = bnx2fc_send_adisc(tgt, fp);
 233			break;
 234		case ELS_LOGO:
 235			rc = bnx2fc_send_logo(tgt, fp);
 236			break;
 237		case ELS_RLS:
 238			rc = bnx2fc_send_rls(tgt, fp);
 239			break;
 240		default:
 241			break;
 242		}
 243	} else if ((fh->fh_type ==  FC_TYPE_BLS) &&
 244	    (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
 245		BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
 246	else {
 247		BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
 248				"rctl 0x%x thru non-offload path\n",
 249				fh->fh_type, fh->fh_r_ctl);
 250		return -ENODEV;
 251	}
 252	if (rc)
 253		return -ENOMEM;
 254	else
 255		return 0;
 256}
 257
 258/**
 259 * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
 260 *
 261 * @lport:	the associated local port
 262 * @fp:	the fc_frame to be transmitted
 263 */
 264static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
 265{
 266	struct ethhdr		*eh;
 267	struct fcoe_crc_eof	*cp;
 268	struct sk_buff		*skb;
 269	struct fc_frame_header	*fh;
 270	struct bnx2fc_interface	*interface;
 271	struct fcoe_ctlr        *ctlr;
 272	struct bnx2fc_hba *hba;
 273	struct fcoe_port	*port;
 274	struct fcoe_hdr		*hp;
 275	struct bnx2fc_rport	*tgt;
 276	u8			sof, eof;
 277	u32			crc;
 278	unsigned int		hlen, tlen, elen;
 279	int			wlen, rc = 0;
 280
 281	port = (struct fcoe_port *)lport_priv(lport);
 282	interface = port->priv;
 283	ctlr = bnx2fc_to_ctlr(interface);
 284	hba = interface->hba;
 285
 286	fh = fc_frame_header_get(fp);
 287
 288	skb = fp_skb(fp);
 289	if (!lport->link_up) {
 290		BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
 291		kfree_skb(skb);
 292		return 0;
 293	}
 294
 295	if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 296		if (!ctlr->sel_fcf) {
 297			BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
 298			kfree_skb(skb);
 299			return -EINVAL;
 300		}
 301		if (fcoe_ctlr_els_send(ctlr, lport, skb))
 302			return 0;
 303	}
 304
 305	sof = fr_sof(fp);
 306	eof = fr_eof(fp);
 307
 308	/*
 309	 * Snoop the frame header to check if the frame is for
 310	 * an offloaded session
 311	 */
 312	/*
 313	 * tgt_ofld_list access is synchronized using
 314	 * both hba mutex and hba lock. Atleast hba mutex or
 315	 * hba lock needs to be held for read access.
 316	 */
 317
 318	spin_lock_bh(&hba->hba_lock);
 319	tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
 320	if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
 321		/* This frame is for offloaded session */
 322		BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
 323				"port_id = 0x%x\n", ntoh24(fh->fh_d_id));
 324		spin_unlock_bh(&hba->hba_lock);
 325		rc = bnx2fc_xmit_l2_frame(tgt, fp);
 326		if (rc != -ENODEV) {
 327			kfree_skb(skb);
 328			return rc;
 329		}
 330	} else {
 331		spin_unlock_bh(&hba->hba_lock);
 332	}
 333
 334	elen = sizeof(struct ethhdr);
 335	hlen = sizeof(struct fcoe_hdr);
 336	tlen = sizeof(struct fcoe_crc_eof);
 337	wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 338
 339	skb->ip_summed = CHECKSUM_NONE;
 340	crc = fcoe_fc_crc(fp);
 341
 342	/* copy port crc and eof to the skb buff */
 343	if (skb_is_nonlinear(skb)) {
 344		skb_frag_t *frag;
 345		if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
 346			kfree_skb(skb);
 347			return -ENOMEM;
 348		}
 349		frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
 350		cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
 351	} else {
 352		cp = skb_put(skb, tlen);
 353	}
 354
 355	memset(cp, 0, sizeof(*cp));
 356	cp->fcoe_eof = eof;
 357	cp->fcoe_crc32 = cpu_to_le32(~crc);
 358	if (skb_is_nonlinear(skb)) {
 359		kunmap_atomic(cp);
 360		cp = NULL;
 361	}
 362
 363	/* adjust skb network/transport offsets to match mac/fcoe/port */
 364	skb_push(skb, elen + hlen);
 365	skb_reset_mac_header(skb);
 366	skb_reset_network_header(skb);
 367	skb->mac_len = elen;
 368	skb->protocol = htons(ETH_P_FCOE);
 369	skb->dev = interface->netdev;
 370
 371	/* fill up mac and fcoe headers */
 372	eh = eth_hdr(skb);
 373	eh->h_proto = htons(ETH_P_FCOE);
 374	if (ctlr->map_dest)
 375		fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
 376	else
 377		/* insert GW address */
 378		memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
 379
 380	if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
 381		memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
 382	else
 383		memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
 384
 385	hp = (struct fcoe_hdr *)(eh + 1);
 386	memset(hp, 0, sizeof(*hp));
 387	if (FC_FCOE_VER)
 388		FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
 389	hp->fcoe_sof = sof;
 390
 391	/* fcoe lso, mss is in max_payload which is non-zero for FCP data */
 392	if (lport->seq_offload && fr_max_payload(fp)) {
 393		skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
 394		skb_shinfo(skb)->gso_size = fr_max_payload(fp);
 395	} else {
 396		skb_shinfo(skb)->gso_type = 0;
 397		skb_shinfo(skb)->gso_size = 0;
 398	}
 399
 400	/*update tx stats */
 401	this_cpu_inc(lport->stats->TxFrames);
 402	this_cpu_add(lport->stats->TxWords, wlen);
 403
 404	/* send down to lld */
 405	fr_dev(fp) = lport;
 406	if (port->fcoe_pending_queue.qlen)
 407		fcoe_check_wait_queue(lport, skb);
 408	else if (fcoe_start_io(skb))
 409		fcoe_check_wait_queue(lport, skb);
 410
 411	return 0;
 412}
 413
 414/**
 415 * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
 416 *
 417 * @skb:	the receive socket buffer
 418 * @dev:	associated net device
 419 * @ptype:	context
 420 * @olddev:	last device
 421 *
 422 * This function receives the packet and builds FC frame and passes it up
 423 */
 424static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
 425		struct packet_type *ptype, struct net_device *olddev)
 426{
 427	struct fc_lport *lport;
 428	struct bnx2fc_interface *interface;
 429	struct fcoe_ctlr *ctlr;
 430	struct fcoe_rcv_info *fr;
 431	struct fcoe_percpu_s *bg;
 432
 433	interface = container_of(ptype, struct bnx2fc_interface,
 434				 fcoe_packet_type);
 435	ctlr = bnx2fc_to_ctlr(interface);
 436	lport = ctlr->lp;
 437
 438	if (unlikely(lport == NULL)) {
 439		printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
 440		goto err;
 441	}
 442
 443	skb = skb_share_check(skb, GFP_ATOMIC);
 444	if (!skb)
 445		return -1;
 446
 447	if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
 448		printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
 449		goto err;
 450	}
 451
 452	/*
 453	 * Check for minimum frame length, and make sure required FCoE
 454	 * and FC headers are pulled into the linear data area.
 455	 */
 456	if (unlikely((skb->len < FCOE_MIN_FRAME) ||
 457	    !pskb_may_pull(skb, FCOE_HEADER_LEN)))
 458		goto err;
 459
 460	skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
 461
 462	fr = fcoe_dev_from_skb(skb);
 463	fr->fr_dev = lport;
 464
 465	bg = &bnx2fc_global;
 466	spin_lock(&bg->fcoe_rx_list.lock);
 467
 468	__skb_queue_tail(&bg->fcoe_rx_list, skb);
 469	if (bg->fcoe_rx_list.qlen == 1)
 470		wake_up_process(bg->kthread);
 471
 472	spin_unlock(&bg->fcoe_rx_list.lock);
 473
 474	return 0;
 475err:
 476	kfree_skb(skb);
 477	return -1;
 478}
 479
 480static int bnx2fc_l2_rcv_thread(void *arg)
 481{
 482	struct fcoe_percpu_s *bg = arg;
 483	struct sk_buff *skb;
 484
 485	set_user_nice(current, MIN_NICE);
 486	set_current_state(TASK_INTERRUPTIBLE);
 487	while (!kthread_should_stop()) {
 488		schedule();
 489		spin_lock_bh(&bg->fcoe_rx_list.lock);
 490		while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
 491			spin_unlock_bh(&bg->fcoe_rx_list.lock);
 492			bnx2fc_recv_frame(skb);
 493			spin_lock_bh(&bg->fcoe_rx_list.lock);
 494		}
 495		__set_current_state(TASK_INTERRUPTIBLE);
 496		spin_unlock_bh(&bg->fcoe_rx_list.lock);
 497	}
 498	__set_current_state(TASK_RUNNING);
 499	return 0;
 500}
 501
 502
 503static void bnx2fc_recv_frame(struct sk_buff *skb)
 504{
 505	u64 crc_err;
 506	u32 fr_len, fr_crc;
 507	struct fc_lport *lport;
 508	struct fcoe_rcv_info *fr;
 509	struct fc_frame_header *fh;
 510	struct fcoe_crc_eof crc_eof;
 511	struct fc_frame *fp;
 512	struct fc_lport *vn_port;
 513	struct fcoe_port *port, *phys_port;
 514	u8 *mac = NULL;
 515	u8 *dest_mac = NULL;
 516	struct fcoe_hdr *hp;
 517	struct bnx2fc_interface *interface;
 518	struct fcoe_ctlr *ctlr;
 519
 520	fr = fcoe_dev_from_skb(skb);
 521	lport = fr->fr_dev;
 522	if (unlikely(lport == NULL)) {
 523		printk(KERN_ERR PFX "Invalid lport struct\n");
 524		kfree_skb(skb);
 525		return;
 526	}
 527
 528	if (skb_is_nonlinear(skb))
 529		skb_linearize(skb);
 530	mac = eth_hdr(skb)->h_source;
 531	dest_mac = eth_hdr(skb)->h_dest;
 532
 533	/* Pull the header */
 534	hp = (struct fcoe_hdr *) skb_network_header(skb);
 535	fh = (struct fc_frame_header *) skb_transport_header(skb);
 536	skb_pull(skb, sizeof(struct fcoe_hdr));
 537	fr_len = skb->len - sizeof(struct fcoe_crc_eof);
 538
 539	this_cpu_inc(lport->stats->RxFrames);
 540	this_cpu_add(lport->stats->RxWords, fr_len / FCOE_WORD_TO_BYTE);
 541
 542	fp = (struct fc_frame *)skb;
 543	fc_frame_init(fp);
 544	fr_dev(fp) = lport;
 545	fr_sof(fp) = hp->fcoe_sof;
 546	if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
 547		kfree_skb(skb);
 548		return;
 549	}
 550	fr_eof(fp) = crc_eof.fcoe_eof;
 551	fr_crc(fp) = crc_eof.fcoe_crc32;
 552	if (pskb_trim(skb, fr_len)) {
 553		kfree_skb(skb);
 554		return;
 555	}
 556
 557	phys_port = lport_priv(lport);
 558	interface = phys_port->priv;
 559	ctlr = bnx2fc_to_ctlr(interface);
 560
 561	fh = fc_frame_header_get(fp);
 562
 563	if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
 564		BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n",
 565		    dest_mac);
 566		kfree_skb(skb);
 567		return;
 568	}
 569
 570	vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
 571	if (vn_port) {
 572		port = lport_priv(vn_port);
 573		if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
 574			BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
 575			kfree_skb(skb);
 576			return;
 577		}
 578	}
 579	if (ctlr->state) {
 580		if (!ether_addr_equal(mac, ctlr->dest_addr)) {
 581			BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n",
 582			    mac, ctlr->dest_addr);
 583			kfree_skb(skb);
 584			return;
 585		}
 586	}
 587	if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
 588	    fh->fh_type == FC_TYPE_FCP) {
 589		/* Drop FCP data. We dont this in L2 path */
 590		kfree_skb(skb);
 591		return;
 592	}
 593	if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
 594	    fh->fh_type == FC_TYPE_ELS) {
 595		switch (fc_frame_payload_op(fp)) {
 596		case ELS_LOGO:
 597			if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
 598				/* drop non-FIP LOGO */
 599				kfree_skb(skb);
 600				return;
 601			}
 602			break;
 603		}
 604	}
 605
 606	if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
 607		/* Drop incoming ABTS */
 608		kfree_skb(skb);
 609		return;
 610	}
 611
 612	/*
 613	 * If the destination ID from the frame header does not match what we
 614	 * have on record for lport and the search for a NPIV port came up
 615	 * empty then this is not addressed to our port so simply drop it.
 616	 */
 617	if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
 618		BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
 619		    lport->port_id, ntoh24(fh->fh_d_id));
 620		kfree_skb(skb);
 621		return;
 622	}
 623
 624	fr_crc = le32_to_cpu(fr_crc(fp));
 625
 626	if (unlikely(fr_crc != ~crc32(~0, skb->data, fr_len))) {
 627		crc_err = this_cpu_inc_return(lport->stats->InvalidCRCCount);
 628		if (crc_err < 5)
 629			printk(KERN_WARNING PFX "dropping frame with "
 630			       "CRC error\n");
 631		kfree_skb(skb);
 632		return;
 633	}
 634	fc_exch_recv(lport, fp);
 635}
 636
 637/**
 638 * bnx2fc_percpu_io_thread - thread per cpu for ios
 639 *
 640 * @arg:	ptr to bnx2fc_percpu_info structure
 641 */
 642static int bnx2fc_percpu_io_thread(void *arg)
 643{
 644	struct bnx2fc_percpu_s *p = arg;
 645	struct bnx2fc_work *work, *tmp;
 646	LIST_HEAD(work_list);
 647
 648	set_user_nice(current, MIN_NICE);
 649	set_current_state(TASK_INTERRUPTIBLE);
 650	while (!kthread_should_stop()) {
 651		schedule();
 652		spin_lock_bh(&p->fp_work_lock);
 653		while (!list_empty(&p->work_list)) {
 654			list_splice_init(&p->work_list, &work_list);
 655			spin_unlock_bh(&p->fp_work_lock);
 656
 657			list_for_each_entry_safe(work, tmp, &work_list, list) {
 658				list_del_init(&work->list);
 659				bnx2fc_process_cq_compl(work->tgt, work->wqe,
 660							work->rq_data,
 661							work->num_rq,
 662							work->task);
 663				kfree(work);
 664			}
 665
 666			spin_lock_bh(&p->fp_work_lock);
 667		}
 668		__set_current_state(TASK_INTERRUPTIBLE);
 669		spin_unlock_bh(&p->fp_work_lock);
 670	}
 671	__set_current_state(TASK_RUNNING);
 672
 673	return 0;
 674}
 675
 676static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
 677{
 678	struct fc_host_statistics *bnx2fc_stats;
 679	struct fc_lport *lport = shost_priv(shost);
 680	struct fcoe_port *port = lport_priv(lport);
 681	struct bnx2fc_interface *interface = port->priv;
 682	struct bnx2fc_hba *hba = interface->hba;
 683	struct fcoe_statistics_params *fw_stats;
 684	int rc = 0;
 685
 686	fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
 687	if (!fw_stats)
 688		return NULL;
 689
 690	mutex_lock(&hba->hba_stats_mutex);
 691
 692	bnx2fc_stats = fc_get_host_stats(shost);
 693
 694	init_completion(&hba->stat_req_done);
 695	if (bnx2fc_send_stat_req(hba))
 696		goto unlock_stats_mutex;
 697	rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
 698	if (!rc) {
 699		BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
 700		goto unlock_stats_mutex;
 701	}
 702	BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
 703	bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
 704	BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
 705	bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
 706	BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
 707	bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
 708	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
 709	bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
 710	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
 711	bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
 712
 713	bnx2fc_stats->dumped_frames = 0;
 714	bnx2fc_stats->lip_count = 0;
 715	bnx2fc_stats->nos_count = 0;
 716	bnx2fc_stats->loss_of_sync_count = 0;
 717	bnx2fc_stats->loss_of_signal_count = 0;
 718	bnx2fc_stats->prim_seq_protocol_err_count = 0;
 719
 720	memcpy(&hba->prev_stats, hba->stats_buffer,
 721	       sizeof(struct fcoe_statistics_params));
 722
 723unlock_stats_mutex:
 724	mutex_unlock(&hba->hba_stats_mutex);
 725	return bnx2fc_stats;
 726}
 727
 728static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
 729{
 730	struct fcoe_port *port = lport_priv(lport);
 731	struct bnx2fc_interface *interface = port->priv;
 732	struct bnx2fc_hba *hba = interface->hba;
 733	struct Scsi_Host *shost = lport->host;
 734	int rc = 0;
 735
 736	shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
 737	shost->max_lun = bnx2fc_max_luns;
 738	shost->max_id = BNX2FC_MAX_FCP_TGT;
 739	shost->max_channel = 0;
 740	if (lport->vport)
 741		shost->transportt = bnx2fc_vport_xport_template;
 742	else
 743		shost->transportt = bnx2fc_transport_template;
 744
 745	/* Add the new host to SCSI-ml */
 746	rc = scsi_add_host(lport->host, dev);
 747	if (rc) {
 748		printk(KERN_ERR PFX "Error on scsi_add_host\n");
 749		return rc;
 750	}
 751	if (!lport->vport)
 752		fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
 753	snprintf(fc_host_symbolic_name(lport->host), 256,
 754		 "%s (QLogic %s) v%s over %s",
 755		BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
 756		interface->netdev->name);
 757
 758	return 0;
 759}
 760
 761static int bnx2fc_link_ok(struct fc_lport *lport)
 762{
 763	struct fcoe_port *port = lport_priv(lport);
 764	struct bnx2fc_interface *interface = port->priv;
 765	struct bnx2fc_hba *hba = interface->hba;
 766	struct net_device *dev = hba->phys_dev;
 767	int rc = 0;
 768
 769	if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
 770		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 771	else {
 772		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 773		rc = -1;
 774	}
 775	return rc;
 776}
 777
 778/**
 779 * bnx2fc_get_link_state - get network link state
 780 *
 781 * @hba:	adapter instance pointer
 782 *
 783 * updates adapter structure flag based on netdev state
 784 */
 785void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
 786{
 787	if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
 788		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 789	else
 790		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
 791}
 792
 793static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
 794{
 795	struct bnx2fc_hba *hba;
 796	struct bnx2fc_interface *interface;
 797	struct fcoe_ctlr *ctlr;
 798	struct fcoe_port *port;
 799	u64 wwnn, wwpn;
 800
 801	port = lport_priv(lport);
 802	interface = port->priv;
 803	ctlr = bnx2fc_to_ctlr(interface);
 804	hba = interface->hba;
 805
 806	/* require support for get_pauseparam ethtool op. */
 807	if (!hba->phys_dev->ethtool_ops ||
 808	    !hba->phys_dev->ethtool_ops->get_pauseparam)
 809		return -EOPNOTSUPP;
 810
 811	if (fc_set_mfs(lport, BNX2FC_MFS))
 812		return -EINVAL;
 813
 814	skb_queue_head_init(&port->fcoe_pending_queue);
 815	port->fcoe_pending_queue_active = 0;
 816	timer_setup(&port->timer, fcoe_queue_timer, 0);
 817
 818	fcoe_link_speed_update(lport);
 819
 820	if (!lport->vport) {
 821		if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
 822			wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
 823						 1, 0);
 824		BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
 825		fc_set_wwnn(lport, wwnn);
 826
 827		if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
 828			wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
 829						 2, 0);
 830
 831		BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
 832		fc_set_wwpn(lport, wwpn);
 833	}
 834
 835	return 0;
 836}
 837
 838static void bnx2fc_destroy_timer(struct timer_list *t)
 839{
 840	struct bnx2fc_hba *hba = timer_container_of(hba, t, destroy_timer);
 841
 842	printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
 843	       "Destroy compl not received!!\n");
 844	set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
 845	wake_up_interruptible(&hba->destroy_wait);
 846}
 847
 848/**
 849 * bnx2fc_indicate_netevent - Generic netdev event handler
 850 *
 851 * @context:	adapter structure pointer
 852 * @event:	event type
 853 * @vlan_id:	vlan id - associated vlan id with this event
 854 *
 855 * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
 856 * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
 857 */
 858static void bnx2fc_indicate_netevent(void *context, unsigned long event,
 859				     u16 vlan_id)
 860{
 861	struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
 862	struct fcoe_ctlr_device *cdev;
 863	struct fc_lport *lport;
 864	struct fc_lport *vport;
 865	struct bnx2fc_interface *interface, *tmp;
 866	struct fcoe_ctlr *ctlr;
 867	int wait_for_upload = 0;
 868	u32 link_possible = 1;
 869
 870	if (vlan_id != 0 && event != NETDEV_UNREGISTER)
 871		return;
 872
 873	switch (event) {
 874	case NETDEV_UP:
 875		if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
 876			printk(KERN_ERR "indicate_netevent: "\
 877					"hba is not UP!!\n");
 878		break;
 879
 880	case NETDEV_DOWN:
 881		clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 882		clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
 883		link_possible = 0;
 884		break;
 885
 886	case NETDEV_GOING_DOWN:
 887		set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
 888		link_possible = 0;
 889		break;
 890
 891	case NETDEV_CHANGE:
 892		break;
 893
 894	case NETDEV_UNREGISTER:
 895		if (!vlan_id)
 896			return;
 897		mutex_lock(&bnx2fc_dev_lock);
 898		list_for_each_entry_safe(interface, tmp, &if_list, list) {
 899			if (interface->hba == hba &&
 900			    interface->vlan_id == (vlan_id & VLAN_VID_MASK))
 901				__bnx2fc_destroy(interface);
 902		}
 903		mutex_unlock(&bnx2fc_dev_lock);
 904		return;
 905
 906	default:
 907		return;
 908	}
 909
 910	mutex_lock(&bnx2fc_dev_lock);
 911	list_for_each_entry(interface, &if_list, list) {
 912
 913		if (interface->hba != hba)
 914			continue;
 915
 916		ctlr = bnx2fc_to_ctlr(interface);
 917		lport = ctlr->lp;
 918		BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
 919				interface->netdev->name, event);
 920
 921		fcoe_link_speed_update(lport);
 922
 923		cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
 924
 925		if (link_possible && !bnx2fc_link_ok(lport)) {
 926			switch (cdev->enabled) {
 927			case FCOE_CTLR_DISABLED:
 928				pr_info("Link up while interface is disabled.\n");
 929				break;
 930			case FCOE_CTLR_ENABLED:
 931			case FCOE_CTLR_UNUSED:
 932				/* Reset max recv frame size to default */
 933				fc_set_mfs(lport, BNX2FC_MFS);
 934				/*
 935				 * ctlr link up will only be handled during
 936				 * enable to avoid sending discovery
 937				 * solicitation on a stale vlan
 938				 */
 939				if (interface->enabled)
 940					fcoe_ctlr_link_up(ctlr);
 941			}
 942		} else if (fcoe_ctlr_link_down(ctlr)) {
 943			switch (cdev->enabled) {
 944			case FCOE_CTLR_DISABLED:
 945				pr_info("Link down while interface is disabled.\n");
 946				break;
 947			case FCOE_CTLR_ENABLED:
 948			case FCOE_CTLR_UNUSED:
 949				mutex_lock(&lport->lp_mutex);
 950				list_for_each_entry(vport, &lport->vports, list)
 951					fc_host_port_type(vport->host) =
 952					FC_PORTTYPE_UNKNOWN;
 953				mutex_unlock(&lport->lp_mutex);
 954				fc_host_port_type(lport->host) =
 955					FC_PORTTYPE_UNKNOWN;
 956				this_cpu_inc(lport->stats->LinkFailureCount);
 957				fcoe_clean_pending_queue(lport);
 958				wait_for_upload = 1;
 959			}
 960		}
 961	}
 962	mutex_unlock(&bnx2fc_dev_lock);
 963
 964	if (wait_for_upload) {
 965		clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
 966		init_waitqueue_head(&hba->shutdown_wait);
 967		BNX2FC_MISC_DBG("indicate_netevent "
 968				"num_ofld_sess = %d\n",
 969				hba->num_ofld_sess);
 970		hba->wait_for_link_down = 1;
 971		wait_event_interruptible(hba->shutdown_wait,
 972					 (hba->num_ofld_sess == 0));
 973		BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
 974				hba->num_ofld_sess);
 975		hba->wait_for_link_down = 0;
 976
 977		if (signal_pending(current))
 978			flush_signals(current);
 979	}
 980}
 981
 982static int bnx2fc_libfc_config(struct fc_lport *lport)
 983{
 984
 985	/* Set the function pointers set by bnx2fc driver */
 986	memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
 987		sizeof(struct libfc_function_template));
 988	fc_elsct_init(lport);
 989	fc_exch_init(lport);
 990	fc_disc_init(lport);
 991	fc_disc_config(lport, lport);
 992	return 0;
 993}
 994
 995static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
 996{
 997	int fcoe_min_xid, fcoe_max_xid;
 998
 999	fcoe_min_xid = hba->max_xid + 1;
1000	if (nr_cpu_ids <= 2)
1001		fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
1002	else
1003		fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
1004	if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
1005			       fcoe_max_xid, NULL)) {
1006		printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
1007		return -ENOMEM;
1008	}
1009
1010	return 0;
1011}
1012
1013static int bnx2fc_lport_config(struct fc_lport *lport)
1014{
1015	lport->link_up = 0;
1016	lport->qfull = 0;
1017	lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
1018	lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
1019	lport->e_d_tov = 2 * 1000;
1020	lport->r_a_tov = 10 * 1000;
1021
1022	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1023				FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1024	lport->does_npiv = 1;
1025
1026	memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
1027	lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
1028
1029	/* alloc stats structure */
1030	if (fc_lport_init_stats(lport))
1031		return -ENOMEM;
1032
1033	/* Finish fc_lport configuration */
1034	fc_lport_config(lport);
1035
1036	return 0;
1037}
1038
1039/**
1040 * bnx2fc_fip_recv - handle a received FIP frame.
1041 *
1042 * @skb: the received skb
1043 * @dev: associated &net_device
1044 * @ptype: the &packet_type structure which was used to register this handler.
1045 * @orig_dev: original receive &net_device, in case @ dev is a bond.
1046 *
1047 * Returns: 0 for success
1048 */
1049static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
1050			   struct packet_type *ptype,
1051			   struct net_device *orig_dev)
1052{
1053	struct bnx2fc_interface *interface;
1054	struct fcoe_ctlr *ctlr;
1055	interface = container_of(ptype, struct bnx2fc_interface,
1056				 fip_packet_type);
1057	ctlr = bnx2fc_to_ctlr(interface);
1058	fcoe_ctlr_recv(ctlr, skb);
1059	return 0;
1060}
1061
1062/**
1063 * bnx2fc_update_src_mac - Update Ethernet MAC filters.
1064 *
1065 * @lport: The local port
1066 * @addr: Location of data to copy
1067 *
1068 * Remove any previously-set unicast MAC filter.
1069 * Add secondary FCoE MAC address filter for our OUI.
1070 */
1071static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
1072{
1073	struct fcoe_port *port = lport_priv(lport);
1074
1075	memcpy(port->data_src_addr, addr, ETH_ALEN);
1076}
1077
1078/**
1079 * bnx2fc_get_src_mac - return the ethernet source address for an lport
1080 *
1081 * @lport: libfc port
1082 */
1083static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
1084{
1085	struct fcoe_port *port;
1086
1087	port = (struct fcoe_port *)lport_priv(lport);
1088	return port->data_src_addr;
1089}
1090
1091/**
1092 * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
1093 *
1094 * @fip: FCoE controller.
1095 * @skb: FIP Packet.
1096 */
1097static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
1098{
1099	struct fip_header *fiph;
1100	struct ethhdr *eth_hdr;
1101	u16 op;
1102	u8 sub;
1103
1104	fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
1105	eth_hdr = (struct ethhdr *)skb_mac_header(skb);
1106	op = ntohs(fiph->fip_op);
1107	sub = fiph->fip_subcode;
1108
1109	if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
1110		BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
1111		    eth_hdr->h_source, eth_hdr->h_dest);
1112
1113	skb->dev = bnx2fc_from_ctlr(fip)->netdev;
1114	dev_queue_xmit(skb);
1115}
1116
1117static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
1118{
1119	struct Scsi_Host *shost = vport_to_shost(vport);
1120	struct fc_lport *n_port = shost_priv(shost);
1121	struct fcoe_port *port = lport_priv(n_port);
1122	struct bnx2fc_interface *interface = port->priv;
1123	struct net_device *netdev = interface->netdev;
1124	struct fc_lport *vn_port;
1125	int rc;
1126	char buf[32];
1127
1128	rc = fcoe_validate_vport_create(vport);
1129	if (rc) {
1130		fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1131		printk(KERN_ERR PFX "Failed to create vport, "
1132		       "WWPN (0x%s) already exists\n",
1133		       buf);
1134		return rc;
1135	}
1136
1137	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1138		printk(KERN_ERR PFX "vn ports cannot be created on"
1139			"this interface\n");
1140		return -EIO;
1141	}
1142	rtnl_lock();
1143	mutex_lock(&bnx2fc_dev_lock);
1144	vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
1145	mutex_unlock(&bnx2fc_dev_lock);
1146	rtnl_unlock();
1147
1148	if (!vn_port) {
1149		printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
1150			netdev->name);
1151		return -EIO;
1152	}
1153
1154	if (bnx2fc_devloss_tmo)
1155		fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
1156
1157	if (disabled) {
1158		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1159	} else {
1160		vn_port->boot_time = jiffies;
1161		fc_lport_init(vn_port);
1162		fc_fabric_login(vn_port);
1163		fc_vport_setlink(vn_port);
1164	}
1165	return 0;
1166}
1167
1168static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
1169{
1170	struct bnx2fc_lport *blport, *tmp;
1171
1172	spin_lock_bh(&hba->hba_lock);
1173	list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
1174		if (blport->lport == lport) {
1175			list_del(&blport->list);
1176			kfree(blport);
1177		}
1178	}
1179	spin_unlock_bh(&hba->hba_lock);
1180}
1181
1182static int bnx2fc_vport_destroy(struct fc_vport *vport)
1183{
1184	struct Scsi_Host *shost = vport_to_shost(vport);
1185	struct fc_lport *n_port = shost_priv(shost);
1186	struct fc_lport *vn_port = vport->dd_data;
1187	struct fcoe_port *port = lport_priv(vn_port);
1188	struct bnx2fc_interface *interface = port->priv;
1189	struct fc_lport *v_port;
1190	bool found = false;
1191
1192	mutex_lock(&n_port->lp_mutex);
1193	list_for_each_entry(v_port, &n_port->vports, list)
1194		if (v_port->vport == vport) {
1195			found = true;
1196			break;
1197		}
1198
1199	if (!found) {
1200		mutex_unlock(&n_port->lp_mutex);
1201		return -ENOENT;
1202	}
1203	list_del(&vn_port->list);
1204	mutex_unlock(&n_port->lp_mutex);
1205	bnx2fc_free_vport(interface->hba, port->lport);
1206	bnx2fc_port_shutdown(port->lport);
1207	bnx2fc_port_destroy(port);
1208	bnx2fc_interface_put(interface);
1209	return 0;
1210}
1211
1212static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
1213{
1214	struct fc_lport *lport = vport->dd_data;
1215
1216	if (disable) {
1217		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1218		fc_fabric_logoff(lport);
1219	} else {
1220		lport->boot_time = jiffies;
1221		fc_fabric_login(lport);
1222		fc_vport_setlink(lport);
1223	}
1224	return 0;
1225}
1226
1227
1228static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
1229{
1230	struct net_device *netdev = interface->netdev;
1231	struct net_device *physdev = interface->hba->phys_dev;
1232	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1233	struct netdev_hw_addr *ha;
1234	int sel_san_mac = 0;
1235
1236	/* setup Source MAC Address */
1237	rcu_read_lock();
1238	for_each_dev_addr(physdev, ha) {
1239		BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
1240				ha->type);
1241		printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
1242				ha->addr[1], ha->addr[2], ha->addr[3],
1243				ha->addr[4], ha->addr[5]);
1244
1245		if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
1246		    (is_valid_ether_addr(ha->addr))) {
1247			memcpy(ctlr->ctl_src_addr, ha->addr,
1248			       ETH_ALEN);
1249			sel_san_mac = 1;
1250			BNX2FC_MISC_DBG("Found SAN MAC\n");
1251		}
1252	}
1253	rcu_read_unlock();
1254
1255	if (!sel_san_mac)
1256		return -ENODEV;
1257
1258	interface->fip_packet_type.func = bnx2fc_fip_recv;
1259	interface->fip_packet_type.type = htons(ETH_P_FIP);
1260	interface->fip_packet_type.dev = netdev;
1261	dev_add_pack(&interface->fip_packet_type);
1262
1263	interface->fcoe_packet_type.func = bnx2fc_rcv;
1264	interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
1265	interface->fcoe_packet_type.dev = netdev;
1266	dev_add_pack(&interface->fcoe_packet_type);
1267
1268	return 0;
1269}
1270
1271static int bnx2fc_attach_transport(void)
1272{
1273	bnx2fc_transport_template =
1274		fc_attach_transport(&bnx2fc_transport_function);
1275
1276	if (bnx2fc_transport_template == NULL) {
1277		printk(KERN_ERR PFX "Failed to attach FC transport\n");
1278		return -ENODEV;
1279	}
1280
1281	bnx2fc_vport_xport_template =
1282		fc_attach_transport(&bnx2fc_vport_xport_function);
1283	if (bnx2fc_vport_xport_template == NULL) {
1284		printk(KERN_ERR PFX
1285		       "Failed to attach FC transport for vport\n");
1286		fc_release_transport(bnx2fc_transport_template);
1287		bnx2fc_transport_template = NULL;
1288		return -ENODEV;
1289	}
1290	return 0;
1291}
1292static void bnx2fc_release_transport(void)
1293{
1294	fc_release_transport(bnx2fc_transport_template);
1295	fc_release_transport(bnx2fc_vport_xport_template);
1296	bnx2fc_transport_template = NULL;
1297	bnx2fc_vport_xport_template = NULL;
1298}
1299
1300static void bnx2fc_interface_release(struct kref *kref)
1301{
1302	struct fcoe_ctlr_device *ctlr_dev;
1303	struct bnx2fc_interface *interface;
1304	struct fcoe_ctlr *ctlr;
1305	struct net_device *netdev;
1306
1307	interface = container_of(kref, struct bnx2fc_interface, kref);
1308	BNX2FC_MISC_DBG("Interface is being released\n");
1309
1310	ctlr = bnx2fc_to_ctlr(interface);
1311	ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
1312	netdev = interface->netdev;
1313
1314	/* tear-down FIP controller */
1315	if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
1316		fcoe_ctlr_destroy(ctlr);
1317
1318	fcoe_ctlr_device_delete(ctlr_dev);
1319
1320	dev_put(netdev);
1321	module_put(THIS_MODULE);
1322}
1323
1324static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
1325{
1326	kref_get(&interface->kref);
1327}
1328
1329static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
1330{
1331	kref_put(&interface->kref, bnx2fc_interface_release);
1332}
1333static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
1334{
1335	/* Free the command manager */
1336	if (hba->cmd_mgr) {
1337		bnx2fc_cmd_mgr_free(hba->cmd_mgr);
1338		hba->cmd_mgr = NULL;
1339	}
1340	kfree(hba->tgt_ofld_list);
1341	bnx2fc_unbind_pcidev(hba);
1342	kfree(hba);
1343}
1344
1345/**
1346 * bnx2fc_hba_create - create a new bnx2fc hba
1347 *
1348 * @cnic:	pointer to cnic device
1349 *
1350 * Creates a new FCoE hba on the given device.
1351 *
1352 */
1353static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
1354{
1355	struct bnx2fc_hba *hba;
1356	struct fcoe_capabilities *fcoe_cap;
1357	int rc;
1358
1359	hba = kzalloc(sizeof(*hba), GFP_KERNEL);
1360	if (!hba) {
1361		printk(KERN_ERR PFX "Unable to allocate hba structure\n");
1362		return NULL;
1363	}
1364	spin_lock_init(&hba->hba_lock);
1365	mutex_init(&hba->hba_mutex);
1366	mutex_init(&hba->hba_stats_mutex);
1367
1368	hba->cnic = cnic;
1369
1370	hba->max_tasks = cnic->max_fcoe_exchanges;
1371	hba->elstm_xids = (hba->max_tasks / 2);
1372	hba->max_outstanding_cmds = hba->elstm_xids;
1373	hba->max_xid = (hba->max_tasks - 1);
1374
1375	rc = bnx2fc_bind_pcidev(hba);
1376	if (rc) {
1377		printk(KERN_ERR PFX "create_adapter:  bind error\n");
1378		goto bind_err;
1379	}
1380	hba->phys_dev = cnic->netdev;
1381	hba->next_conn_id = 0;
1382
1383	hba->tgt_ofld_list =
1384		kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *),
1385			GFP_KERNEL);
1386	if (!hba->tgt_ofld_list) {
1387		printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
1388		goto tgtofld_err;
1389	}
1390
1391	hba->num_ofld_sess = 0;
1392
1393	hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
1394	if (!hba->cmd_mgr) {
1395		printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
1396		goto cmgr_err;
1397	}
1398	fcoe_cap = &hba->fcoe_cap;
1399
1400	fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
1401					FCOE_IOS_PER_CONNECTION_SHIFT;
1402	fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
1403					FCOE_LOGINS_PER_PORT_SHIFT;
1404	fcoe_cap->capability2 = hba->max_outstanding_cmds <<
1405					FCOE_NUMBER_OF_EXCHANGES_SHIFT;
1406	fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
1407					FCOE_NPIV_WWN_PER_PORT_SHIFT;
1408	fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
1409					FCOE_TARGETS_SUPPORTED_SHIFT;
1410	fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
1411					FCOE_OUTSTANDING_COMMANDS_SHIFT;
1412	fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
1413
1414	init_waitqueue_head(&hba->shutdown_wait);
1415	init_waitqueue_head(&hba->destroy_wait);
1416	INIT_LIST_HEAD(&hba->vports);
1417
1418	return hba;
1419
1420cmgr_err:
1421	kfree(hba->tgt_ofld_list);
1422tgtofld_err:
1423	bnx2fc_unbind_pcidev(hba);
1424bind_err:
1425	kfree(hba);
1426	return NULL;
1427}
1428
1429static struct bnx2fc_interface *
1430bnx2fc_interface_create(struct bnx2fc_hba *hba,
1431			struct net_device *netdev,
1432			enum fip_mode fip_mode)
1433{
1434	struct fcoe_ctlr_device *ctlr_dev;
1435	struct bnx2fc_interface *interface;
1436	struct fcoe_ctlr *ctlr;
1437	int size;
1438	int rc = 0;
1439
1440	size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
1441	ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
1442					 size);
1443	if (!ctlr_dev) {
1444		printk(KERN_ERR PFX "Unable to allocate interface structure\n");
1445		return NULL;
1446	}
1447	ctlr = fcoe_ctlr_device_priv(ctlr_dev);
1448	ctlr->cdev = ctlr_dev;
1449	interface = fcoe_ctlr_priv(ctlr);
1450	dev_hold(netdev);
1451	kref_init(&interface->kref);
1452	interface->hba = hba;
1453	interface->netdev = netdev;
1454
1455	/* Initialize FIP */
1456	fcoe_ctlr_init(ctlr, fip_mode);
1457	ctlr->send = bnx2fc_fip_send;
1458	ctlr->update_mac = bnx2fc_update_src_mac;
1459	ctlr->get_src_addr = bnx2fc_get_src_mac;
1460	set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
1461
1462	rc = bnx2fc_interface_setup(interface);
1463	if (!rc)
1464		return interface;
1465
1466	fcoe_ctlr_destroy(ctlr);
1467	dev_put(netdev);
1468	fcoe_ctlr_device_delete(ctlr_dev);
1469	return NULL;
1470}
1471
1472/**
1473 * bnx2fc_if_create - Create FCoE instance on a given interface
1474 *
1475 * @interface:	FCoE interface to create a local port on
1476 * @parent:	Device pointer to be the parent in sysfs for the SCSI host
1477 * @npiv:	Indicates if the port is vport or not
1478 *
1479 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1480 *
1481 * Returns:	Allocated fc_lport or an error pointer
1482 */
1483static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
1484				  struct device *parent, int npiv)
1485{
1486	struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
1487	struct fc_lport		*lport, *n_port;
1488	struct fcoe_port	*port;
1489	struct Scsi_Host	*shost;
1490	struct fc_vport		*vport = dev_to_vport(parent);
1491	struct bnx2fc_lport	*blport;
1492	struct bnx2fc_hba	*hba = interface->hba;
1493	int			rc = 0;
1494
1495	blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
1496	if (!blport) {
1497		BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
1498		return NULL;
1499	}
1500
1501	/* Allocate Scsi_Host structure */
1502	bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
1503	if (!npiv)
1504		lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
1505	else
1506		lport = libfc_vport_create(vport, sizeof(*port));
1507
1508	if (!lport) {
1509		printk(KERN_ERR PFX "could not allocate scsi host structure\n");
1510		goto free_blport;
1511	}
1512	shost = lport->host;
1513	port = lport_priv(lport);
1514	port->lport = lport;
1515	port->priv = interface;
1516	port->get_netdev = bnx2fc_netdev;
1517
1518	/* Configure fcoe_port */
1519	rc = bnx2fc_lport_config(lport);
1520	if (rc)
1521		goto lp_config_err;
1522
1523	if (npiv) {
1524		printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
1525			vport->node_name, vport->port_name);
1526		fc_set_wwnn(lport, vport->node_name);
1527		fc_set_wwpn(lport, vport->port_name);
1528	}
1529	/* Configure netdev and networking properties of the lport */
1530	rc = bnx2fc_net_config(lport, interface->netdev);
1531	if (rc) {
1532		printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
1533		goto lp_config_err;
1534	}
1535
1536	rc = bnx2fc_shost_config(lport, parent);
1537	if (rc) {
1538		printk(KERN_ERR PFX "Couldn't configure shost for %s\n",
1539			interface->netdev->name);
1540		goto lp_config_err;
1541	}
1542
1543	/* Initialize the libfc library */
1544	rc = bnx2fc_libfc_config(lport);
1545	if (rc) {
1546		printk(KERN_ERR PFX "Couldn't configure libfc\n");
1547		goto shost_err;
1548	}
1549	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1550
1551	if (bnx2fc_devloss_tmo)
1552		fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo;
1553
1554	/* Allocate exchange manager */
1555	if (!npiv)
1556		rc = bnx2fc_em_config(lport, hba);
1557	else {
1558		shost = vport_to_shost(vport);
1559		n_port = shost_priv(shost);
1560		rc = fc_exch_mgr_list_clone(n_port, lport);
1561	}
1562
1563	if (rc) {
1564		printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
1565		goto shost_err;
1566	}
1567
1568	bnx2fc_interface_get(interface);
1569
1570	spin_lock_bh(&hba->hba_lock);
1571	blport->lport = lport;
1572	list_add_tail(&blport->list, &hba->vports);
1573	spin_unlock_bh(&hba->hba_lock);
1574
1575	return lport;
1576
1577shost_err:
1578	scsi_remove_host(shost);
1579lp_config_err:
1580	scsi_host_put(lport->host);
1581free_blport:
1582	kfree(blport);
1583	return NULL;
1584}
1585
1586static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
1587{
1588	/* Dont listen for Ethernet packets anymore */
1589	__dev_remove_pack(&interface->fcoe_packet_type);
1590	__dev_remove_pack(&interface->fip_packet_type);
1591	synchronize_net();
1592}
1593
1594static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
1595{
1596	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1597	struct fc_lport *lport = ctlr->lp;
1598	struct fcoe_port *port = lport_priv(lport);
1599	struct bnx2fc_hba *hba = interface->hba;
1600
1601	/* Stop the transmit retry timer */
1602	timer_delete_sync(&port->timer);
1603
1604	/* Free existing transmit skbs */
1605	fcoe_clean_pending_queue(lport);
1606
1607	bnx2fc_net_cleanup(interface);
1608
1609	bnx2fc_free_vport(hba, lport);
1610}
1611
1612static void bnx2fc_if_destroy(struct fc_lport *lport)
1613{
1614
1615	/* Free queued packets for the receive thread */
1616	bnx2fc_clean_rx_queue(lport);
1617
1618	/* Detach from scsi-ml */
1619	fc_remove_host(lport->host);
1620	scsi_remove_host(lport->host);
1621
1622	/*
1623	 * Note that only the physical lport will have the exchange manager.
1624	 * for vports, this function is NOP
1625	 */
1626	fc_exch_mgr_free(lport);
1627
1628	/* Free memory used by statistical counters */
1629	fc_lport_free_stats(lport);
1630
1631	/* Release Scsi_Host */
1632	scsi_host_put(lport->host);
1633}
1634
1635static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
1636{
1637	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1638	struct fc_lport *lport = ctlr->lp;
1639	struct fcoe_port *port = lport_priv(lport);
1640
1641	bnx2fc_interface_cleanup(interface);
1642	bnx2fc_stop(interface);
1643	list_del(&interface->list);
1644	bnx2fc_port_destroy(port);
1645	bnx2fc_interface_put(interface);
1646}
1647
1648/**
1649 * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
1650 *
1651 * @netdev: The net device that the FCoE interface is on
1652 *
1653 * Called from sysfs.
1654 *
1655 * Returns: 0 for success
1656 */
1657static int bnx2fc_destroy(struct net_device *netdev)
1658{
1659	struct bnx2fc_interface *interface = NULL;
1660	struct workqueue_struct *timer_work_queue;
1661	struct fcoe_ctlr *ctlr;
1662	int rc = 0;
1663
1664	rtnl_lock();
1665	mutex_lock(&bnx2fc_dev_lock);
1666
1667	interface = bnx2fc_interface_lookup(netdev);
1668	ctlr = bnx2fc_to_ctlr(interface);
1669	if (!interface || !ctlr->lp) {
1670		rc = -ENODEV;
1671		printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
1672		goto netdev_err;
1673	}
1674
1675	timer_work_queue = interface->timer_work_queue;
1676	__bnx2fc_destroy(interface);
1677	destroy_workqueue(timer_work_queue);
1678
1679netdev_err:
1680	mutex_unlock(&bnx2fc_dev_lock);
1681	rtnl_unlock();
1682	return rc;
1683}
1684
1685static void bnx2fc_port_destroy(struct fcoe_port *port)
1686{
1687	struct fc_lport *lport;
1688
1689	lport = port->lport;
1690	BNX2FC_HBA_DBG(lport, "Entered %s, destroying lport %p\n", __func__, lport);
1691
1692	bnx2fc_if_destroy(lport);
1693}
1694
1695static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
1696{
1697	bnx2fc_free_fw_resc(hba);
1698	bnx2fc_free_task_ctx(hba);
1699}
1700
1701/**
1702 * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
1703 *			pci structure
1704 *
1705 * @hba:		Adapter instance
1706 */
1707static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
1708{
1709	if (bnx2fc_setup_task_ctx(hba))
1710		goto mem_err;
1711
1712	if (bnx2fc_setup_fw_resc(hba))
1713		goto mem_err;
1714
1715	return 0;
1716mem_err:
1717	bnx2fc_unbind_adapter_devices(hba);
1718	return -ENOMEM;
1719}
1720
1721static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
1722{
1723	struct cnic_dev *cnic;
1724	struct pci_dev *pdev;
1725
1726	if (!hba->cnic) {
1727		printk(KERN_ERR PFX "cnic is NULL\n");
1728		return -ENODEV;
1729	}
1730	cnic = hba->cnic;
1731	pdev = hba->pcidev = cnic->pcidev;
1732	if (!hba->pcidev)
1733		return -ENODEV;
1734
1735	switch (pdev->device) {
1736	case PCI_DEVICE_ID_NX2_57710:
1737		strscpy(hba->chip_num, "BCM57710", sizeof(hba->chip_num));
1738		break;
1739	case PCI_DEVICE_ID_NX2_57711:
1740		strscpy(hba->chip_num, "BCM57711", sizeof(hba->chip_num));
1741		break;
1742	case PCI_DEVICE_ID_NX2_57712:
1743	case PCI_DEVICE_ID_NX2_57712_MF:
1744	case PCI_DEVICE_ID_NX2_57712_VF:
1745		strscpy(hba->chip_num, "BCM57712", sizeof(hba->chip_num));
1746		break;
1747	case PCI_DEVICE_ID_NX2_57800:
1748	case PCI_DEVICE_ID_NX2_57800_MF:
1749	case PCI_DEVICE_ID_NX2_57800_VF:
1750		strscpy(hba->chip_num, "BCM57800", sizeof(hba->chip_num));
1751		break;
1752	case PCI_DEVICE_ID_NX2_57810:
1753	case PCI_DEVICE_ID_NX2_57810_MF:
1754	case PCI_DEVICE_ID_NX2_57810_VF:
1755		strscpy(hba->chip_num, "BCM57810", sizeof(hba->chip_num));
1756		break;
1757	case PCI_DEVICE_ID_NX2_57840:
1758	case PCI_DEVICE_ID_NX2_57840_MF:
1759	case PCI_DEVICE_ID_NX2_57840_VF:
1760	case PCI_DEVICE_ID_NX2_57840_2_20:
1761	case PCI_DEVICE_ID_NX2_57840_4_10:
1762		strscpy(hba->chip_num, "BCM57840", sizeof(hba->chip_num));
1763		break;
1764	default:
1765		pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
1766		break;
1767	}
1768	pci_dev_get(hba->pcidev);
1769	return 0;
1770}
1771
1772static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
1773{
1774	if (hba->pcidev) {
1775		hba->chip_num[0] = '\0';
1776		pci_dev_put(hba->pcidev);
1777	}
1778	hba->pcidev = NULL;
1779}
1780
1781/**
1782 * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
1783 *
1784 * @handle:    transport handle pointing to adapter structure
1785 */
1786static int bnx2fc_ulp_get_stats(void *handle)
1787{
1788	struct bnx2fc_hba *hba = handle;
1789	struct cnic_dev *cnic;
1790	struct fcoe_stats_info *stats_addr;
1791
1792	if (!hba)
1793		return -EINVAL;
1794
1795	cnic = hba->cnic;
1796	stats_addr = &cnic->stats_addr->fcoe_stat;
1797	if (!stats_addr)
1798		return -EINVAL;
1799
1800	strscpy(stats_addr->version, BNX2FC_VERSION,
1801		sizeof(stats_addr->version));
1802	stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
1803	stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
1804
1805	return 0;
1806}
1807
1808
1809/**
1810 * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
1811 *
1812 * @handle:	transport handle pointing to adapter structure
1813 *
1814 * This function maps adapter structure to pcidev structure and initiates
1815 *	firmware handshake to enable/initialize on-chip FCoE components.
1816 *	This bnx2fc - cnic interface api callback is used after following
1817 *	conditions are met -
1818 *	a) underlying network interface is up (marked by event NETDEV_UP
1819 *		from netdev
1820 *	b) bnx2fc adatper structure is registered.
1821 */
1822static void bnx2fc_ulp_start(void *handle)
1823{
1824	struct bnx2fc_hba *hba = handle;
1825	struct bnx2fc_interface *interface;
1826	struct fcoe_ctlr *ctlr;
1827	struct fc_lport *lport;
1828
1829	mutex_lock(&bnx2fc_dev_lock);
1830
1831	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1832		bnx2fc_fw_init(hba);
1833
1834	BNX2FC_MISC_DBG("bnx2fc started.\n");
1835
1836	list_for_each_entry(interface, &if_list, list) {
1837		if (interface->hba == hba) {
1838			ctlr = bnx2fc_to_ctlr(interface);
1839			lport = ctlr->lp;
1840			/* Kick off Fabric discovery*/
1841			printk(KERN_ERR PFX "ulp_init: start discovery\n");
1842			lport->tt.frame_send = bnx2fc_xmit;
1843			bnx2fc_start_disc(interface);
1844		}
1845	}
1846
1847	mutex_unlock(&bnx2fc_dev_lock);
1848}
1849
1850static void bnx2fc_port_shutdown(struct fc_lport *lport)
1851{
1852	BNX2FC_MISC_DBG("Entered %s\n", __func__);
1853	fc_fabric_logoff(lport);
1854	fc_lport_destroy(lport);
1855}
1856
1857static void bnx2fc_stop(struct bnx2fc_interface *interface)
1858{
1859	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1860	struct fc_lport *lport;
1861	struct fc_lport *vport;
1862
1863	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
1864		return;
1865
1866	lport = ctlr->lp;
1867	bnx2fc_port_shutdown(lport);
1868
1869	mutex_lock(&lport->lp_mutex);
1870	list_for_each_entry(vport, &lport->vports, list)
1871		fc_host_port_type(vport->host) =
1872					FC_PORTTYPE_UNKNOWN;
1873	mutex_unlock(&lport->lp_mutex);
1874	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
1875	fcoe_ctlr_link_down(ctlr);
1876	fcoe_clean_pending_queue(lport);
1877}
1878
1879static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
1880{
1881#define BNX2FC_INIT_POLL_TIME		(1000 / HZ)
1882	int rc = -1;
1883	int i = HZ;
1884
1885	rc = bnx2fc_bind_adapter_devices(hba);
1886	if (rc) {
1887		printk(KERN_ALERT PFX
1888			"bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
1889		goto err_out;
1890	}
1891
1892	rc = bnx2fc_send_fw_fcoe_init_msg(hba);
1893	if (rc) {
1894		printk(KERN_ALERT PFX
1895			"bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
1896		goto err_unbind;
1897	}
1898
1899	/*
1900	 * Wait until the adapter init message is complete, and adapter
1901	 * state is UP.
1902	 */
1903	while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
1904		msleep(BNX2FC_INIT_POLL_TIME);
1905
1906	if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
1907		printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
1908				"Ignoring...\n",
1909				hba->cnic->netdev->name);
1910		rc = -1;
1911		goto err_unbind;
1912	}
1913
1914
1915	set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
1916	return 0;
1917
1918err_unbind:
1919	bnx2fc_unbind_adapter_devices(hba);
1920err_out:
1921	return rc;
1922}
1923
1924static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
1925{
1926	if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
1927		if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
1928			timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer,
1929				    0);
1930			hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
1931								jiffies;
1932			add_timer(&hba->destroy_timer);
1933			wait_event_interruptible(hba->destroy_wait,
1934					test_bit(BNX2FC_FLAG_DESTROY_CMPL,
1935						 &hba->flags));
1936			clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1937			/* This should never happen */
1938			if (signal_pending(current))
1939				flush_signals(current);
1940
1941			timer_delete_sync(&hba->destroy_timer);
1942		}
1943		bnx2fc_unbind_adapter_devices(hba);
1944	}
1945}
1946
1947/**
1948 * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
1949 *
1950 * @handle:	transport handle pointing to adapter structure
1951 *
1952 * Driver checks if adapter is already in shutdown mode, if not start
1953 *	the shutdown process.
1954 */
1955static void bnx2fc_ulp_stop(void *handle)
1956{
1957	struct bnx2fc_hba *hba = handle;
1958	struct bnx2fc_interface *interface;
1959
1960	printk(KERN_ERR "ULP_STOP\n");
1961
1962	mutex_lock(&bnx2fc_dev_lock);
1963	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
1964		goto exit;
1965	list_for_each_entry(interface, &if_list, list) {
1966		if (interface->hba == hba)
1967			bnx2fc_stop(interface);
1968	}
1969	BUG_ON(hba->num_ofld_sess != 0);
1970
1971	mutex_lock(&hba->hba_mutex);
1972	clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1973	clear_bit(ADAPTER_STATE_GOING_DOWN,
1974		  &hba->adapter_state);
1975
1976	clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
1977	mutex_unlock(&hba->hba_mutex);
1978
1979	bnx2fc_fw_destroy(hba);
1980exit:
1981	mutex_unlock(&bnx2fc_dev_lock);
1982}
1983
1984static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
1985{
1986	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
1987	struct fc_lport *lport;
1988	int wait_cnt = 0;
1989
1990	BNX2FC_MISC_DBG("Entered %s\n", __func__);
1991	/* Kick off FIP/FLOGI */
1992	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
1993		printk(KERN_ERR PFX "Init not done yet\n");
1994		return;
1995	}
1996
1997	lport = ctlr->lp;
1998	BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
1999
2000	if (!bnx2fc_link_ok(lport) && interface->enabled) {
2001		BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
2002		fcoe_ctlr_link_up(ctlr);
2003		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2004		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2005	}
2006
2007	/* wait for the FCF to be selected before issuing FLOGI */
2008	while (!ctlr->sel_fcf) {
2009		msleep(250);
2010		/* give up after 3 secs */
2011		if (++wait_cnt > 12)
2012			break;
2013	}
2014
2015	/* Reset max receive frame size to default */
2016	if (fc_set_mfs(lport, BNX2FC_MFS))
2017		return;
2018
2019	fc_lport_init(lport);
2020	fc_fabric_login(lport);
2021}
2022
2023
2024/**
2025 * bnx2fc_ulp_init - Initialize an adapter instance
2026 *
2027 * @dev :	cnic device handle
2028 * Called from cnic_register_driver() context to initialize all
2029 *	enumerated cnic devices. This routine allocates adapter structure
2030 *	and other device specific resources.
2031 */
2032static void bnx2fc_ulp_init(struct cnic_dev *dev)
2033{
2034	struct bnx2fc_hba *hba;
2035	int rc = 0;
2036
2037	BNX2FC_MISC_DBG("Entered %s\n", __func__);
2038	/* bnx2fc works only when bnx2x is loaded */
2039	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
2040	    (dev->max_fcoe_conn == 0)) {
2041		printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
2042				    " flags: %lx fcoe_conn: %d\n",
2043			dev->netdev->name, dev->flags, dev->max_fcoe_conn);
2044		return;
2045	}
2046
2047	hba = bnx2fc_hba_create(dev);
2048	if (!hba) {
2049		printk(KERN_ERR PFX "hba initialization failed\n");
2050		return;
2051	}
2052
2053	pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
2054
2055	/* Add HBA to the adapter list */
2056	mutex_lock(&bnx2fc_dev_lock);
2057	list_add_tail(&hba->list, &adapter_list);
2058	adapter_count++;
2059	mutex_unlock(&bnx2fc_dev_lock);
2060
2061	dev->fcoe_cap = &hba->fcoe_cap;
2062	clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2063	rc = dev->register_device(dev, CNIC_ULP_FCOE,
2064						(void *) hba);
2065	if (rc)
2066		printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
2067	else
2068		set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
2069}
2070
2071/* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
2072static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
2073{
2074	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2075
2076	if (interface->enabled) {
2077		if (!ctlr->lp) {
2078			pr_err(PFX "__bnx2fc_disable: lport not found\n");
2079			return -ENODEV;
2080		} else {
2081			interface->enabled = false;
2082			fcoe_ctlr_link_down(ctlr);
2083			fcoe_clean_pending_queue(ctlr->lp);
2084		}
2085	}
2086	return 0;
2087}
2088
2089/*
2090 * Deperecated: Use bnx2fc_enabled()
2091 */
2092static int bnx2fc_disable(struct net_device *netdev)
2093{
2094	struct bnx2fc_interface *interface;
2095	struct fcoe_ctlr *ctlr;
2096	int rc = 0;
2097
2098	rtnl_lock();
2099	mutex_lock(&bnx2fc_dev_lock);
2100
2101	interface = bnx2fc_interface_lookup(netdev);
2102	ctlr = bnx2fc_to_ctlr(interface);
2103
2104	if (!interface) {
2105		rc = -ENODEV;
2106		pr_err(PFX "bnx2fc_disable: interface not found\n");
2107	} else {
2108		rc = __bnx2fc_disable(ctlr);
2109	}
2110	mutex_unlock(&bnx2fc_dev_lock);
2111	rtnl_unlock();
2112	return rc;
2113}
2114
2115static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
2116				      struct cnic_fc_npiv_tbl *npiv_tbl)
2117{
2118	struct fc_vport_identifiers vpid;
2119	uint i, created = 0;
2120	u64 wwnn = 0;
2121	char wwpn_str[32];
2122	char wwnn_str[32];
2123
2124	if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
2125		BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
2126		goto done;
2127	}
2128
2129	/* Sanity check the first entry to make sure it's not 0 */
2130	if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
2131	    wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
2132		BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
2133		goto done;
2134	}
2135
2136	vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
2137	vpid.vport_type = FC_PORTTYPE_NPIV;
2138	vpid.disable = false;
2139
2140	for (i = 0; i < npiv_tbl->count; i++) {
2141		wwnn = wwn_to_u64(npiv_tbl->wwnn[i]);
2142		if (wwnn == 0) {
2143			/*
2144			 * If we get a 0 element from for the WWNN then assume
2145			 * the WWNN should be the same as the physical port.
2146			 */
2147			wwnn = lport->wwnn;
2148		}
2149		vpid.node_name = wwnn;
2150		vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
2151		scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
2152		    "NPIV[%u]:%016llx-%016llx",
2153		    created, vpid.port_name, vpid.node_name);
2154		fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str));
2155		fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str));
2156		BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str,
2157		    wwpn_str);
2158		if (fc_vport_create(lport->host, 0, &vpid))
2159			created++;
2160		else
2161			BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
2162	}
2163done:
2164	return created;
2165}
2166
2167static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
2168{
2169	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
2170	struct bnx2fc_hba *hba;
2171	struct cnic_fc_npiv_tbl *npiv_tbl;
2172	struct fc_lport *lport;
2173
2174	if (!interface->enabled) {
2175		if (!ctlr->lp) {
2176			pr_err(PFX "__bnx2fc_enable: lport not found\n");
2177			return -ENODEV;
2178		} else if (!bnx2fc_link_ok(ctlr->lp)) {
2179			fcoe_ctlr_link_up(ctlr);
2180			interface->enabled = true;
2181		}
2182	}
2183
2184	/* Create static NPIV ports if any are contained in NVRAM */
2185	hba = interface->hba;
2186	lport = ctlr->lp;
2187
2188	if (!hba)
2189		goto done;
2190
2191	if (!hba->cnic)
2192		goto done;
2193
2194	if (!lport)
2195		goto done;
2196
2197	if (!lport->host)
2198		goto done;
2199
2200	if (!hba->cnic->get_fc_npiv_tbl)
2201		goto done;
2202
2203	npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
2204	if (!npiv_tbl)
2205		goto done;
2206
2207	if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
2208		goto done_free;
2209
2210	bnx2fc_npiv_create_vports(lport, npiv_tbl);
2211done_free:
2212	kfree(npiv_tbl);
2213done:
2214	return 0;
2215}
2216
2217/*
2218 * Deprecated: Use bnx2fc_enabled()
2219 */
2220static int bnx2fc_enable(struct net_device *netdev)
2221{
2222	struct bnx2fc_interface *interface;
2223	struct fcoe_ctlr *ctlr;
2224	int rc = 0;
2225
2226	rtnl_lock();
2227	mutex_lock(&bnx2fc_dev_lock);
2228
2229	interface = bnx2fc_interface_lookup(netdev);
2230	ctlr = bnx2fc_to_ctlr(interface);
2231	if (!interface) {
2232		rc = -ENODEV;
2233		pr_err(PFX "bnx2fc_enable: interface not found\n");
2234	} else {
2235		rc = __bnx2fc_enable(ctlr);
2236	}
2237
2238	mutex_unlock(&bnx2fc_dev_lock);
2239	rtnl_unlock();
2240	return rc;
2241}
2242
2243/**
2244 * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
2245 * @cdev: The FCoE Controller that is being enabled or disabled
2246 *
2247 * fcoe_sysfs will ensure that the state of 'enabled' has
2248 * changed, so no checking is necessary here. This routine simply
2249 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2250 * When those routines are removed the functionality can be merged
2251 * here.
2252 */
2253static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
2254{
2255	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
2256
2257	switch (cdev->enabled) {
2258	case FCOE_CTLR_ENABLED:
2259		return __bnx2fc_enable(ctlr);
2260	case FCOE_CTLR_DISABLED:
2261		return __bnx2fc_disable(ctlr);
2262	case FCOE_CTLR_UNUSED:
2263	default:
2264		return -ENOTSUPP;
2265	}
2266}
2267
2268enum bnx2fc_create_link_state {
2269	BNX2FC_CREATE_LINK_DOWN,
2270	BNX2FC_CREATE_LINK_UP,
2271};
2272
2273/**
2274 * _bnx2fc_create() - Create bnx2fc FCoE interface
2275 * @netdev  :   The net_device object the Ethernet interface to create on
2276 * @fip_mode:   The FIP mode for this creation
2277 * @link_state: The ctlr link state on creation
2278 *
2279 * Called from either the libfcoe 'create' module parameter
2280 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2281 *
2282 * libfcoe's 'create' module parameter is deprecated so some
2283 * consolidation of code can be done when that interface is
2284 * removed.
2285 *
2286 * Returns: 0 for success
2287 */
2288static int _bnx2fc_create(struct net_device *netdev,
2289			  enum fip_mode fip_mode,
2290			  enum bnx2fc_create_link_state link_state)
2291{
2292	struct fcoe_ctlr_device *cdev;
2293	struct fcoe_ctlr *ctlr;
2294	struct bnx2fc_interface *interface;
2295	struct bnx2fc_hba *hba;
2296	struct net_device *phys_dev = netdev;
2297	struct fc_lport *lport;
2298	struct ethtool_drvinfo drvinfo;
2299	int rc = 0;
2300	int vlan_id = 0;
2301
2302	BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
2303	if (fip_mode != FIP_MODE_FABRIC) {
2304		printk(KERN_ERR "fip mode not FABRIC\n");
2305		return -EIO;
2306	}
2307
2308	rtnl_lock();
2309
2310	mutex_lock(&bnx2fc_dev_lock);
2311
2312	if (!try_module_get(THIS_MODULE)) {
2313		rc = -EINVAL;
2314		goto mod_err;
2315	}
2316
2317	/* obtain physical netdev */
2318	if (is_vlan_dev(netdev))
2319		phys_dev = vlan_dev_real_dev(netdev);
2320
2321	/* verify if the physical device is a netxtreme2 device */
2322	if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
2323		memset(&drvinfo, 0, sizeof(drvinfo));
2324		phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
2325		if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
2326			printk(KERN_ERR PFX "Not a netxtreme2 device\n");
2327			rc = -EINVAL;
2328			goto netdev_err;
2329		}
2330	} else {
2331		printk(KERN_ERR PFX "unable to obtain drv_info\n");
2332		rc = -EINVAL;
2333		goto netdev_err;
2334	}
2335
2336	/* obtain interface and initialize rest of the structure */
2337	hba = bnx2fc_hba_lookup(phys_dev);
2338	if (!hba) {
2339		rc = -ENODEV;
2340		printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
2341		goto netdev_err;
2342	}
2343
2344	if (bnx2fc_interface_lookup(netdev)) {
2345		rc = -EEXIST;
2346		goto netdev_err;
2347	}
2348
2349	interface = bnx2fc_interface_create(hba, netdev, fip_mode);
2350	if (!interface) {
2351		printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
2352		rc = -ENOMEM;
2353		goto netdev_err;
2354	}
2355
2356	if (is_vlan_dev(netdev)) {
2357		vlan_id = vlan_dev_vlan_id(netdev);
2358		interface->vlan_enabled = 1;
2359	}
2360
2361	ctlr = bnx2fc_to_ctlr(interface);
2362	cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
2363	interface->vlan_id = vlan_id;
2364	interface->tm_timeout = BNX2FC_TM_TIMEOUT;
2365
2366	interface->timer_work_queue = alloc_ordered_workqueue(
2367		"%s", WQ_MEM_RECLAIM, "bnx2fc_timer_wq");
2368	if (!interface->timer_work_queue) {
2369		printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
2370		rc = -EINVAL;
2371		goto ifput_err;
2372	}
2373
2374	lport = bnx2fc_if_create(interface, &cdev->dev, 0);
2375	if (!lport) {
2376		printk(KERN_ERR PFX "Failed to create interface (%s)\n",
2377			netdev->name);
2378		rc = -EINVAL;
2379		goto if_create_err;
2380	}
2381
2382	/* Add interface to if_list */
2383	list_add_tail(&interface->list, &if_list);
2384
2385	lport->boot_time = jiffies;
2386
2387	/* Make this master N_port */
2388	ctlr->lp = lport;
2389
2390	if (link_state == BNX2FC_CREATE_LINK_UP)
2391		cdev->enabled = FCOE_CTLR_ENABLED;
2392	else
2393		cdev->enabled = FCOE_CTLR_DISABLED;
2394
2395	if (link_state == BNX2FC_CREATE_LINK_UP &&
2396	    !bnx2fc_link_ok(lport)) {
2397		fcoe_ctlr_link_up(ctlr);
2398		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
2399		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
2400	}
2401
2402	BNX2FC_HBA_DBG(lport, "create: START DISC\n");
2403	bnx2fc_start_disc(interface);
2404
2405	if (link_state == BNX2FC_CREATE_LINK_UP)
2406		interface->enabled = true;
2407
2408	/*
2409	 * Release from kref_init in bnx2fc_interface_setup, on success
2410	 * lport should be holding a reference taken in bnx2fc_if_create
2411	 */
2412	bnx2fc_interface_put(interface);
2413	/* put netdev that was held while calling dev_get_by_name */
2414	mutex_unlock(&bnx2fc_dev_lock);
2415	rtnl_unlock();
2416	return 0;
2417
2418if_create_err:
2419	destroy_workqueue(interface->timer_work_queue);
2420ifput_err:
2421	bnx2fc_net_cleanup(interface);
2422	bnx2fc_interface_put(interface);
2423	goto mod_err;
2424netdev_err:
2425	module_put(THIS_MODULE);
2426mod_err:
2427	mutex_unlock(&bnx2fc_dev_lock);
2428	rtnl_unlock();
2429	return rc;
2430}
2431
2432/**
2433 * bnx2fc_create() - Create a bnx2fc interface
2434 * @netdev  : The net_device object the Ethernet interface to create on
2435 * @fip_mode: The FIP mode for this creation
2436 *
2437 * Called from fcoe transport
2438 *
2439 * Returns: 0 for success
2440 */
2441static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode)
2442{
2443	return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
2444}
2445
2446/**
2447 * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
2448 * @netdev: The net_device to be used by the allocated FCoE Controller
2449 *
2450 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2451 * in a link_down state. The allows the user an opportunity to configure
2452 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2453 *
2454 * Creating in with this routine starts the FCoE Controller in Fabric
2455 * mode. The user can change to VN2VN or another mode before enabling.
2456 */
2457static int bnx2fc_ctlr_alloc(struct net_device *netdev)
2458{
2459	return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
2460			      BNX2FC_CREATE_LINK_DOWN);
2461}
2462
2463/**
2464 * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
2465 *
2466 * @cnic:	Pointer to cnic device instance
2467 *
2468 **/
2469static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
2470{
2471	struct bnx2fc_hba *hba;
2472
2473	/* Called with bnx2fc_dev_lock held */
2474	list_for_each_entry(hba, &adapter_list, list) {
2475		if (hba->cnic == cnic)
2476			return hba;
2477	}
2478	return NULL;
2479}
2480
2481static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
2482							*netdev)
2483{
2484	struct bnx2fc_interface *interface;
2485
2486	/* Called with bnx2fc_dev_lock held */
2487	list_for_each_entry(interface, &if_list, list) {
2488		if (interface->netdev == netdev)
2489			return interface;
2490	}
2491	return NULL;
2492}
2493
2494static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
2495						      *phys_dev)
2496{
2497	struct bnx2fc_hba *hba;
2498
2499	/* Called with bnx2fc_dev_lock held */
2500	list_for_each_entry(hba, &adapter_list, list) {
2501		if (hba->phys_dev == phys_dev)
2502			return hba;
2503	}
2504	printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
2505	return NULL;
2506}
2507
2508/**
2509 * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
2510 *
2511 * @dev:	cnic device handle
2512 */
2513static void bnx2fc_ulp_exit(struct cnic_dev *dev)
2514{
2515	struct bnx2fc_hba *hba;
2516	struct bnx2fc_interface *interface, *tmp;
2517
2518	BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
2519
2520	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
2521		printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
2522			dev->netdev->name, dev->flags);
2523		return;
2524	}
2525
2526	mutex_lock(&bnx2fc_dev_lock);
2527	hba = bnx2fc_find_hba_for_cnic(dev);
2528	if (!hba) {
2529		printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
2530		       dev);
2531		mutex_unlock(&bnx2fc_dev_lock);
2532		return;
2533	}
2534
2535	list_del_init(&hba->list);
2536	adapter_count--;
2537
2538	list_for_each_entry_safe(interface, tmp, &if_list, list)
2539		/* destroy not called yet, move to quiesced list */
2540		if (interface->hba == hba)
2541			__bnx2fc_destroy(interface);
2542	mutex_unlock(&bnx2fc_dev_lock);
2543
2544	bnx2fc_ulp_stop(hba);
2545	/* unregister cnic device */
2546	if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
2547		hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
2548	bnx2fc_hba_destroy(hba);
2549}
2550
2551static void bnx2fc_rport_terminate_io(struct fc_rport *rport)
2552{
2553	/* This is a no-op */
2554}
2555
2556/**
2557 * bnx2fc_fcoe_reset - Resets the fcoe
2558 *
2559 * @shost: shost the reset is from
2560 *
2561 * Returns: always 0
2562 */
2563static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
2564{
2565	struct fc_lport *lport = shost_priv(shost);
2566	fc_lport_reset(lport);
2567	return 0;
2568}
2569
2570
2571static bool bnx2fc_match(struct net_device *netdev)
2572{
2573	struct net_device *phys_dev = netdev;
2574
2575	mutex_lock(&bnx2fc_dev_lock);
2576	if (is_vlan_dev(netdev))
2577		phys_dev = vlan_dev_real_dev(netdev);
2578
2579	if (bnx2fc_hba_lookup(phys_dev)) {
2580		mutex_unlock(&bnx2fc_dev_lock);
2581		return true;
2582	}
2583
2584	mutex_unlock(&bnx2fc_dev_lock);
2585	return false;
2586}
2587
2588
2589static struct fcoe_transport bnx2fc_transport = {
2590	.name = {"bnx2fc"},
2591	.attached = false,
2592	.list = LIST_HEAD_INIT(bnx2fc_transport.list),
2593	.alloc = bnx2fc_ctlr_alloc,
2594	.match = bnx2fc_match,
2595	.create = bnx2fc_create,
2596	.destroy = bnx2fc_destroy,
2597	.enable = bnx2fc_enable,
2598	.disable = bnx2fc_disable,
2599};
2600
2601/**
2602 * bnx2fc_cpu_online - Create a receive thread for an  online CPU
2603 *
2604 * @cpu: cpu index for the online cpu
2605 */
2606static int bnx2fc_cpu_online(unsigned int cpu)
2607{
2608	struct bnx2fc_percpu_s *p;
2609	struct task_struct *thread;
2610
2611	p = &per_cpu(bnx2fc_percpu, cpu);
2612
2613	thread = kthread_create_on_cpu(bnx2fc_percpu_io_thread,
2614				       (void *)p, cpu, "bnx2fc_thread/%d");
2615	if (IS_ERR(thread))
2616		return PTR_ERR(thread);
2617
2618	p->iothread = thread;
2619	wake_up_process(thread);
2620	return 0;
2621}
2622
2623static int bnx2fc_cpu_offline(unsigned int cpu)
2624{
2625	struct bnx2fc_percpu_s *p;
2626	struct task_struct *thread;
2627	struct bnx2fc_work *work, *tmp;
2628
2629	BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
2630
2631	/* Prevent any new work from being queued for this CPU */
2632	p = &per_cpu(bnx2fc_percpu, cpu);
2633	spin_lock_bh(&p->fp_work_lock);
2634	thread = p->iothread;
2635	p->iothread = NULL;
2636
2637	/* Free all work in the list */
2638	list_for_each_entry_safe(work, tmp, &p->work_list, list) {
2639		list_del_init(&work->list);
2640		bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data,
2641					work->num_rq, work->task);
2642		kfree(work);
2643	}
2644
2645	spin_unlock_bh(&p->fp_work_lock);
2646
2647	if (thread)
2648		kthread_stop(thread);
2649	return 0;
2650}
2651
2652static int bnx2fc_sdev_configure(struct scsi_device *sdev,
2653				 struct queue_limits *lim)
2654{
2655	if (!bnx2fc_queue_depth)
2656		return 0;
2657
2658	scsi_change_queue_depth(sdev, bnx2fc_queue_depth);
2659	return 0;
2660}
2661
2662static enum cpuhp_state bnx2fc_online_state;
2663
2664/**
2665 * bnx2fc_mod_init - module init entry point
2666 *
2667 * Initialize driver wide global data structures, and register
2668 * with cnic module
2669 **/
2670static int __init bnx2fc_mod_init(void)
2671{
2672	struct fcoe_percpu_s *bg;
2673	struct task_struct *l2_thread;
2674	int rc = 0;
2675	unsigned int cpu = 0;
2676	struct bnx2fc_percpu_s *p;
2677
2678	printk(KERN_INFO PFX "%s", version);
2679
2680	/* register as a fcoe transport */
2681	rc = fcoe_transport_attach(&bnx2fc_transport);
2682	if (rc) {
2683		printk(KERN_ERR "failed to register an fcoe transport, check "
2684			"if libfcoe is loaded\n");
2685		goto out;
2686	}
2687
2688	INIT_LIST_HEAD(&adapter_list);
2689	INIT_LIST_HEAD(&if_list);
2690	mutex_init(&bnx2fc_dev_lock);
2691	adapter_count = 0;
2692
2693	/* Attach FC transport template */
2694	rc = bnx2fc_attach_transport();
2695	if (rc)
2696		goto detach_ft;
2697
2698	bnx2fc_wq = alloc_workqueue("bnx2fc", WQ_PERCPU, 0);
2699	if (!bnx2fc_wq) {
2700		rc = -ENOMEM;
2701		goto release_bt;
2702	}
2703
2704	bg = &bnx2fc_global;
2705	skb_queue_head_init(&bg->fcoe_rx_list);
2706	l2_thread = kthread_run(bnx2fc_l2_rcv_thread,
2707				(void *)bg,
2708				"bnx2fc_l2_thread");
2709	if (IS_ERR(l2_thread)) {
2710		rc = PTR_ERR(l2_thread);
2711		goto free_wq;
2712	}
2713	spin_lock_bh(&bg->fcoe_rx_list.lock);
2714	bg->kthread = l2_thread;
2715	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2716
2717	for_each_possible_cpu(cpu) {
2718		p = &per_cpu(bnx2fc_percpu, cpu);
2719		INIT_LIST_HEAD(&p->work_list);
2720		spin_lock_init(&p->fp_work_lock);
2721	}
2722
2723	rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online",
2724			       bnx2fc_cpu_online, bnx2fc_cpu_offline);
2725	if (rc < 0)
2726		goto stop_thread;
2727	bnx2fc_online_state = rc;
2728
2729	cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
2730	return 0;
2731
2732stop_thread:
2733	kthread_stop(l2_thread);
2734free_wq:
2735	destroy_workqueue(bnx2fc_wq);
2736release_bt:
2737	bnx2fc_release_transport();
2738detach_ft:
2739	fcoe_transport_detach(&bnx2fc_transport);
2740out:
2741	return rc;
2742}
2743
2744static void __exit bnx2fc_mod_exit(void)
2745{
2746	LIST_HEAD(to_be_deleted);
2747	struct bnx2fc_hba *hba, *next;
2748	struct fcoe_percpu_s *bg;
2749	struct task_struct *l2_thread;
2750	struct sk_buff *skb;
2751
2752	/*
2753	 * NOTE: Since cnic calls register_driver routine rtnl_lock,
2754	 * it will have higher precedence than bnx2fc_dev_lock.
2755	 * unregister_device() cannot be called with bnx2fc_dev_lock
2756	 * held.
2757	 */
2758	mutex_lock(&bnx2fc_dev_lock);
2759	list_splice_init(&adapter_list, &to_be_deleted);
2760	adapter_count = 0;
2761	mutex_unlock(&bnx2fc_dev_lock);
2762
2763	/* Unregister with cnic */
2764	list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
2765		list_del_init(&hba->list);
2766		printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
2767		       hba);
2768		bnx2fc_ulp_stop(hba);
2769		/* unregister cnic device */
2770		if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
2771				       &hba->reg_with_cnic))
2772			hba->cnic->unregister_device(hba->cnic,
2773							 CNIC_ULP_FCOE);
2774		bnx2fc_hba_destroy(hba);
2775	}
2776	cnic_unregister_driver(CNIC_ULP_FCOE);
2777
2778	/* Destroy global thread */
2779	bg = &bnx2fc_global;
2780	spin_lock_bh(&bg->fcoe_rx_list.lock);
2781	l2_thread = bg->kthread;
2782	bg->kthread = NULL;
2783	while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
2784		kfree_skb(skb);
2785
2786	spin_unlock_bh(&bg->fcoe_rx_list.lock);
2787
2788	if (l2_thread)
2789		kthread_stop(l2_thread);
2790
2791	cpuhp_remove_state(bnx2fc_online_state);
2792
2793	destroy_workqueue(bnx2fc_wq);
2794	/*
2795	 * detach from scsi transport
2796	 * must happen after all destroys are done
2797	 */
2798	bnx2fc_release_transport();
2799
2800	/* detach from fcoe transport */
2801	fcoe_transport_detach(&bnx2fc_transport);
2802}
2803
2804module_init(bnx2fc_mod_init);
2805module_exit(bnx2fc_mod_exit);
2806
2807static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
2808	.set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
2809	.get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
2810	.get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
2811	.get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
2812	.get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
2813	.get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
2814	.get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
2815
2816	.get_fcoe_fcf_selected = fcoe_fcf_get_selected,
2817	.get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
2818};
2819
2820static struct fc_function_template bnx2fc_transport_function = {
2821	.show_host_node_name = 1,
2822	.show_host_port_name = 1,
2823	.show_host_supported_classes = 1,
2824	.show_host_supported_fc4s = 1,
2825	.show_host_active_fc4s = 1,
2826	.show_host_maxframe_size = 1,
2827
2828	.show_host_port_id = 1,
2829	.show_host_supported_speeds = 1,
2830	.get_host_speed = fc_get_host_speed,
2831	.show_host_speed = 1,
2832	.show_host_port_type = 1,
2833	.get_host_port_state = fc_get_host_port_state,
2834	.show_host_port_state = 1,
2835	.show_host_symbolic_name = 1,
2836
2837	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2838				sizeof(struct bnx2fc_rport)),
2839	.show_rport_maxframe_size = 1,
2840	.show_rport_supported_classes = 1,
2841
2842	.show_host_fabric_name = 1,
2843	.show_starget_node_name = 1,
2844	.show_starget_port_name = 1,
2845	.show_starget_port_id = 1,
2846	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2847	.show_rport_dev_loss_tmo = 1,
2848	.get_fc_host_stats = bnx2fc_get_host_stats,
2849
2850	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2851
2852	.terminate_rport_io = bnx2fc_rport_terminate_io,
2853
2854	.vport_create = bnx2fc_vport_create,
2855	.vport_delete = bnx2fc_vport_destroy,
2856	.vport_disable = bnx2fc_vport_disable,
2857	.bsg_request = fc_lport_bsg_request,
2858};
2859
2860static struct fc_function_template bnx2fc_vport_xport_function = {
2861	.show_host_node_name = 1,
2862	.show_host_port_name = 1,
2863	.show_host_supported_classes = 1,
2864	.show_host_supported_fc4s = 1,
2865	.show_host_active_fc4s = 1,
2866	.show_host_maxframe_size = 1,
2867
2868	.show_host_port_id = 1,
2869	.show_host_supported_speeds = 1,
2870	.get_host_speed = fc_get_host_speed,
2871	.show_host_speed = 1,
2872	.show_host_port_type = 1,
2873	.get_host_port_state = fc_get_host_port_state,
2874	.show_host_port_state = 1,
2875	.show_host_symbolic_name = 1,
2876
2877	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2878				sizeof(struct bnx2fc_rport)),
2879	.show_rport_maxframe_size = 1,
2880	.show_rport_supported_classes = 1,
2881
2882	.show_host_fabric_name = 1,
2883	.show_starget_node_name = 1,
2884	.show_starget_port_name = 1,
2885	.show_starget_port_id = 1,
2886	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2887	.show_rport_dev_loss_tmo = 1,
2888	.get_fc_host_stats = fc_get_host_stats,
2889	.issue_fc_host_lip = bnx2fc_fcoe_reset,
2890	.terminate_rport_io = fc_rport_terminate_io,
2891	.bsg_request = fc_lport_bsg_request,
2892};
2893
2894/*
2895 * Additional scsi_host attributes.
2896 */
2897static ssize_t
2898bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
2899	char *buf)
2900{
2901	struct Scsi_Host *shost = class_to_shost(dev);
2902	struct fc_lport *lport = shost_priv(shost);
2903	struct fcoe_port *port = lport_priv(lport);
2904	struct bnx2fc_interface *interface = port->priv;
2905
2906	sprintf(buf, "%u\n", interface->tm_timeout);
2907	return strlen(buf);
2908}
2909
2910static ssize_t
2911bnx2fc_tm_timeout_store(struct device *dev,
2912	struct device_attribute *attr, const char *buf, size_t count)
2913{
2914	struct Scsi_Host *shost = class_to_shost(dev);
2915	struct fc_lport *lport = shost_priv(shost);
2916	struct fcoe_port *port = lport_priv(lport);
2917	struct bnx2fc_interface *interface = port->priv;
2918	int rval, val;
2919
2920	rval = kstrtouint(buf, 10, &val);
2921	if (rval)
2922		return rval;
2923	if (val > 255)
2924		return -ERANGE;
2925
2926	interface->tm_timeout = (u8)val;
2927	return strlen(buf);
2928}
2929
2930static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
2931	bnx2fc_tm_timeout_store);
2932
2933static struct attribute *bnx2fc_host_attrs[] = {
2934	&dev_attr_tm_timeout.attr,
2935	NULL,
2936};
2937
2938ATTRIBUTE_GROUPS(bnx2fc_host);
2939
2940/*
2941 * scsi_host_template structure used while registering with SCSI-ml
2942 */
2943static struct scsi_host_template bnx2fc_shost_template = {
2944	.module			= THIS_MODULE,
2945	.name			= "QLogic Offload FCoE Initiator",
2946	.queuecommand		= bnx2fc_queuecommand,
2947	.eh_timed_out		= fc_eh_timed_out,
2948	.eh_abort_handler	= bnx2fc_eh_abort,	  /* abts */
2949	.eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
2950	.eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
2951	.eh_host_reset_handler	= fc_eh_host_reset,
2952	.sdev_init		= fc_sdev_init,
2953	.change_queue_depth	= scsi_change_queue_depth,
2954	.this_id		= -1,
2955	.cmd_per_lun		= 3,
2956	.sg_tablesize		= BNX2FC_MAX_BDS_PER_CMD,
2957	.dma_boundary           = 0x7fff,
2958	.max_sectors		= 0x3fbf,
2959	.track_queue_depth	= 1,
2960	.sdev_configure		= bnx2fc_sdev_configure,
2961	.shost_groups		= bnx2fc_host_groups,
2962	.cmd_size		= sizeof(struct bnx2fc_priv),
2963};
2964
2965static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
2966	.frame_send		= bnx2fc_xmit,
2967	.elsct_send		= bnx2fc_elsct_send,
2968	.fcp_abort_io		= bnx2fc_abort_io,
2969	.fcp_cleanup		= bnx2fc_cleanup,
2970	.get_lesb		= fcoe_get_lesb,
2971	.rport_event_callback	= bnx2fc_rport_event_handler,
2972};
2973
2974/*
2975 * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
2976 *			structure carrying callback function pointers
2977 */
2978static struct cnic_ulp_ops bnx2fc_cnic_cb = {
2979	.owner			= THIS_MODULE,
2980	.cnic_init		= bnx2fc_ulp_init,
2981	.cnic_exit		= bnx2fc_ulp_exit,
2982	.cnic_start		= bnx2fc_ulp_start,
2983	.cnic_stop		= bnx2fc_ulp_stop,
2984	.indicate_kcqes		= bnx2fc_indicate_kcqe,
2985	.indicate_netevent	= bnx2fc_indicate_netevent,
2986	.cnic_get_stats		= bnx2fc_ulp_get_stats,
2987};