2 * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
17 * Maintained at www.Open-FCoE.org
20 #include <linux/module.h>
21 #include <linux/spinlock.h>
22 #include <linux/netdevice.h>
23 #include <linux/etherdevice.h>
24 #include <linux/ethtool.h>
25 #include <linux/if_ether.h>
26 #include <linux/if_vlan.h>
27 #include <linux/crc32.h>
28 #include <linux/slab.h>
29 #include <linux/cpu.h>
31 #include <linux/sysfs.h>
32 #include <linux/ctype.h>
33 #include <linux/workqueue.h>
34 #include <net/dcbnl.h>
35 #include <net/dcbevent.h>
36 #include <scsi/scsi_tcq.h>
37 #include <scsi/scsicam.h>
38 #include <scsi/scsi_transport.h>
39 #include <scsi/scsi_transport_fc.h>
40 #include <net/rtnetlink.h>
42 #include <scsi/fc/fc_encaps.h>
43 #include <scsi/fc/fc_fip.h>
44 #include <scsi/fc/fc_fcoe.h>
46 #include <scsi/libfc.h>
47 #include <scsi/fc_frame.h>
48 #include <scsi/libfcoe.h>
52 MODULE_AUTHOR("Open-FCoE.org");
53 MODULE_DESCRIPTION("FCoE");
54 MODULE_LICENSE("GPL v2");
56 /* Performance tuning parameters for fcoe */
57 static unsigned int fcoe_ddp_min
= 4096;
58 module_param_named(ddp_min
, fcoe_ddp_min
, uint
, S_IRUGO
| S_IWUSR
);
59 MODULE_PARM_DESC(ddp_min
, "Minimum I/O size in bytes for " \
60 "Direct Data Placement (DDP).");
62 unsigned int fcoe_debug_logging
;
63 module_param_named(debug_logging
, fcoe_debug_logging
, int, S_IRUGO
|S_IWUSR
);
64 MODULE_PARM_DESC(debug_logging
, "a bit mask of logging levels");
66 static DEFINE_MUTEX(fcoe_config_mutex
);
68 static struct workqueue_struct
*fcoe_wq
;
70 /* fcoe_percpu_clean completion. Waiter protected by fcoe_create_mutex */
71 static DECLARE_COMPLETION(fcoe_flush_completion
);
74 /* must only by accessed under the RTNL mutex */
75 static LIST_HEAD(fcoe_hostlist
);
76 static DEFINE_PER_CPU(struct fcoe_percpu_s
, fcoe_percpu
);
78 /* Function Prototypes */
79 static int fcoe_reset(struct Scsi_Host
*);
80 static int fcoe_xmit(struct fc_lport
*, struct fc_frame
*);
81 static int fcoe_rcv(struct sk_buff
*, struct net_device
*,
82 struct packet_type
*, struct net_device
*);
83 static int fcoe_percpu_receive_thread(void *);
84 static void fcoe_percpu_clean(struct fc_lport
*);
85 static int fcoe_link_ok(struct fc_lport
*);
87 static struct fc_lport
*fcoe_hostlist_lookup(const struct net_device
*);
88 static int fcoe_hostlist_add(const struct fc_lport
*);
89 static void fcoe_hostlist_del(const struct fc_lport
*);
91 static int fcoe_device_notification(struct notifier_block
*, ulong
, void *);
92 static void fcoe_dev_setup(void);
93 static void fcoe_dev_cleanup(void);
94 static struct fcoe_interface
95 *fcoe_hostlist_lookup_port(const struct net_device
*);
97 static int fcoe_fip_recv(struct sk_buff
*, struct net_device
*,
98 struct packet_type
*, struct net_device
*);
100 static void fcoe_fip_send(struct fcoe_ctlr
*, struct sk_buff
*);
101 static void fcoe_update_src_mac(struct fc_lport
*, u8
*);
102 static u8
*fcoe_get_src_mac(struct fc_lport
*);
103 static void fcoe_destroy_work(struct work_struct
*);
105 static int fcoe_ddp_setup(struct fc_lport
*, u16
, struct scatterlist
*,
107 static int fcoe_ddp_done(struct fc_lport
*, u16
);
108 static int fcoe_ddp_target(struct fc_lport
*, u16
, struct scatterlist
*,
110 static int fcoe_cpu_callback(struct notifier_block
*, unsigned long, void *);
111 static int fcoe_dcb_app_notification(struct notifier_block
*notifier
,
112 ulong event
, void *ptr
);
114 static bool fcoe_match(struct net_device
*netdev
);
115 static int fcoe_create(struct net_device
*netdev
, enum fip_state fip_mode
);
116 static int fcoe_destroy(struct net_device
*netdev
);
117 static int fcoe_enable(struct net_device
*netdev
);
118 static int fcoe_disable(struct net_device
*netdev
);
120 /* fcoe_syfs control interface handlers */
121 static int fcoe_ctlr_alloc(struct net_device
*netdev
);
122 static int fcoe_ctlr_enabled(struct fcoe_ctlr_device
*cdev
);
125 static struct fc_seq
*fcoe_elsct_send(struct fc_lport
*,
126 u32 did
, struct fc_frame
*,
128 void (*resp
)(struct fc_seq
*,
131 void *, u32 timeout
);
132 static void fcoe_recv_frame(struct sk_buff
*skb
);
134 /* notification function for packets from net device */
135 static struct notifier_block fcoe_notifier
= {
136 .notifier_call
= fcoe_device_notification
,
139 /* notification function for CPU hotplug events */
140 static struct notifier_block fcoe_cpu_notifier
= {
141 .notifier_call
= fcoe_cpu_callback
,
144 /* notification function for DCB events */
145 static struct notifier_block dcb_notifier
= {
146 .notifier_call
= fcoe_dcb_app_notification
,
149 static struct scsi_transport_template
*fcoe_nport_scsi_transport
;
150 static struct scsi_transport_template
*fcoe_vport_scsi_transport
;
152 static int fcoe_vport_destroy(struct fc_vport
*);
153 static int fcoe_vport_create(struct fc_vport
*, bool disabled
);
154 static int fcoe_vport_disable(struct fc_vport
*, bool disable
);
155 static void fcoe_set_vport_symbolic_name(struct fc_vport
*);
156 static void fcoe_set_port_id(struct fc_lport
*, u32
, struct fc_frame
*);
157 static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device
*);
159 static struct fcoe_sysfs_function_template fcoe_sysfs_templ
= {
160 .set_fcoe_ctlr_mode
= fcoe_ctlr_set_fip_mode
,
161 .set_fcoe_ctlr_enabled
= fcoe_ctlr_enabled
,
162 .get_fcoe_ctlr_link_fail
= fcoe_ctlr_get_lesb
,
163 .get_fcoe_ctlr_vlink_fail
= fcoe_ctlr_get_lesb
,
164 .get_fcoe_ctlr_miss_fka
= fcoe_ctlr_get_lesb
,
165 .get_fcoe_ctlr_symb_err
= fcoe_ctlr_get_lesb
,
166 .get_fcoe_ctlr_err_block
= fcoe_ctlr_get_lesb
,
167 .get_fcoe_ctlr_fcs_error
= fcoe_ctlr_get_lesb
,
169 .get_fcoe_fcf_selected
= fcoe_fcf_get_selected
,
170 .get_fcoe_fcf_vlan_id
= fcoe_fcf_get_vlan_id
,
173 static struct libfc_function_template fcoe_libfc_fcn_templ
= {
174 .frame_send
= fcoe_xmit
,
175 .ddp_setup
= fcoe_ddp_setup
,
176 .ddp_done
= fcoe_ddp_done
,
177 .ddp_target
= fcoe_ddp_target
,
178 .elsct_send
= fcoe_elsct_send
,
179 .get_lesb
= fcoe_get_lesb
,
180 .lport_set_port_id
= fcoe_set_port_id
,
183 static struct fc_function_template fcoe_nport_fc_functions
= {
184 .show_host_node_name
= 1,
185 .show_host_port_name
= 1,
186 .show_host_supported_classes
= 1,
187 .show_host_supported_fc4s
= 1,
188 .show_host_active_fc4s
= 1,
189 .show_host_maxframe_size
= 1,
190 .show_host_serial_number
= 1,
191 .show_host_manufacturer
= 1,
192 .show_host_model
= 1,
193 .show_host_model_description
= 1,
194 .show_host_hardware_version
= 1,
195 .show_host_driver_version
= 1,
196 .show_host_firmware_version
= 1,
197 .show_host_optionrom_version
= 1,
199 .show_host_port_id
= 1,
200 .show_host_supported_speeds
= 1,
201 .get_host_speed
= fc_get_host_speed
,
202 .show_host_speed
= 1,
203 .show_host_port_type
= 1,
204 .get_host_port_state
= fc_get_host_port_state
,
205 .show_host_port_state
= 1,
206 .show_host_symbolic_name
= 1,
208 .dd_fcrport_size
= sizeof(struct fc_rport_libfc_priv
),
209 .show_rport_maxframe_size
= 1,
210 .show_rport_supported_classes
= 1,
212 .show_host_fabric_name
= 1,
213 .show_starget_node_name
= 1,
214 .show_starget_port_name
= 1,
215 .show_starget_port_id
= 1,
216 .set_rport_dev_loss_tmo
= fc_set_rport_loss_tmo
,
217 .show_rport_dev_loss_tmo
= 1,
218 .get_fc_host_stats
= fc_get_host_stats
,
219 .issue_fc_host_lip
= fcoe_reset
,
221 .terminate_rport_io
= fc_rport_terminate_io
,
223 .vport_create
= fcoe_vport_create
,
224 .vport_delete
= fcoe_vport_destroy
,
225 .vport_disable
= fcoe_vport_disable
,
226 .set_vport_symbolic_name
= fcoe_set_vport_symbolic_name
,
228 .bsg_request
= fc_lport_bsg_request
,
231 static struct fc_function_template fcoe_vport_fc_functions
= {
232 .show_host_node_name
= 1,
233 .show_host_port_name
= 1,
234 .show_host_supported_classes
= 1,
235 .show_host_supported_fc4s
= 1,
236 .show_host_active_fc4s
= 1,
237 .show_host_maxframe_size
= 1,
238 .show_host_serial_number
= 1,
239 .show_host_manufacturer
= 1,
240 .show_host_model
= 1,
241 .show_host_model_description
= 1,
242 .show_host_hardware_version
= 1,
243 .show_host_driver_version
= 1,
244 .show_host_firmware_version
= 1,
245 .show_host_optionrom_version
= 1,
247 .show_host_port_id
= 1,
248 .show_host_supported_speeds
= 1,
249 .get_host_speed
= fc_get_host_speed
,
250 .show_host_speed
= 1,
251 .show_host_port_type
= 1,
252 .get_host_port_state
= fc_get_host_port_state
,
253 .show_host_port_state
= 1,
254 .show_host_symbolic_name
= 1,
256 .dd_fcrport_size
= sizeof(struct fc_rport_libfc_priv
),
257 .show_rport_maxframe_size
= 1,
258 .show_rport_supported_classes
= 1,
260 .show_host_fabric_name
= 1,
261 .show_starget_node_name
= 1,
262 .show_starget_port_name
= 1,
263 .show_starget_port_id
= 1,
264 .set_rport_dev_loss_tmo
= fc_set_rport_loss_tmo
,
265 .show_rport_dev_loss_tmo
= 1,
266 .get_fc_host_stats
= fc_get_host_stats
,
267 .issue_fc_host_lip
= fcoe_reset
,
269 .terminate_rport_io
= fc_rport_terminate_io
,
271 .bsg_request
= fc_lport_bsg_request
,
274 static struct scsi_host_template fcoe_shost_template
= {
275 .module
= THIS_MODULE
,
276 .name
= "FCoE Driver",
277 .proc_name
= FCOE_NAME
,
278 .queuecommand
= fc_queuecommand
,
279 .eh_abort_handler
= fc_eh_abort
,
280 .eh_device_reset_handler
= fc_eh_device_reset
,
281 .eh_host_reset_handler
= fc_eh_host_reset
,
282 .slave_alloc
= fc_slave_alloc
,
283 .change_queue_depth
= scsi_change_queue_depth
,
286 .can_queue
= FCOE_MAX_OUTSTANDING_COMMANDS
,
287 .use_clustering
= ENABLE_CLUSTERING
,
288 .sg_tablesize
= SG_ALL
,
289 .max_sectors
= 0xffff,
291 .track_queue_depth
= 1,
295 * fcoe_interface_setup() - Setup a FCoE interface
296 * @fcoe: The new FCoE interface
297 * @netdev: The net device that the fcoe interface is on
299 * Returns : 0 for success
300 * Locking: must be called with the RTNL mutex held
302 static int fcoe_interface_setup(struct fcoe_interface
*fcoe
,
303 struct net_device
*netdev
)
305 struct fcoe_ctlr
*fip
= fcoe_to_ctlr(fcoe
);
306 struct netdev_hw_addr
*ha
;
307 struct net_device
*real_dev
;
308 u8 flogi_maddr
[ETH_ALEN
];
309 const struct net_device_ops
*ops
;
311 fcoe
->netdev
= netdev
;
313 /* Let LLD initialize for FCoE */
314 ops
= netdev
->netdev_ops
;
315 if (ops
->ndo_fcoe_enable
) {
316 if (ops
->ndo_fcoe_enable(netdev
))
317 FCOE_NETDEV_DBG(netdev
, "Failed to enable FCoE"
318 " specific feature for LLD.\n");
321 /* Do not support for bonding device */
322 if (netdev
->priv_flags
& IFF_BONDING
&& netdev
->flags
& IFF_MASTER
) {
323 FCOE_NETDEV_DBG(netdev
, "Bonded interfaces not supported\n");
327 /* look for SAN MAC address, if multiple SAN MACs exist, only
328 * use the first one for SPMA */
329 real_dev
= (netdev
->priv_flags
& IFF_802_1Q_VLAN
) ?
330 vlan_dev_real_dev(netdev
) : netdev
;
331 fcoe
->realdev
= real_dev
;
333 for_each_dev_addr(real_dev
, ha
) {
334 if ((ha
->type
== NETDEV_HW_ADDR_T_SAN
) &&
335 (is_valid_ether_addr(ha
->addr
))) {
336 memcpy(fip
->ctl_src_addr
, ha
->addr
, ETH_ALEN
);
343 /* setup Source Mac Address */
345 memcpy(fip
->ctl_src_addr
, netdev
->dev_addr
, netdev
->addr_len
);
348 * Add FCoE MAC address as second unicast MAC address
349 * or enter promiscuous mode if not capable of listening
350 * for multiple unicast MACs.
352 memcpy(flogi_maddr
, (u8
[6]) FC_FCOE_FLOGI_MAC
, ETH_ALEN
);
353 dev_uc_add(netdev
, flogi_maddr
);
355 dev_uc_add(netdev
, fip
->ctl_src_addr
);
356 if (fip
->mode
== FIP_MODE_VN2VN
) {
357 dev_mc_add(netdev
, FIP_ALL_VN2VN_MACS
);
358 dev_mc_add(netdev
, FIP_ALL_P2P_MACS
);
360 dev_mc_add(netdev
, FIP_ALL_ENODE_MACS
);
363 * setup the receive function from ethernet driver
364 * on the ethertype for the given device
366 fcoe
->fcoe_packet_type
.func
= fcoe_rcv
;
367 fcoe
->fcoe_packet_type
.type
= __constant_htons(ETH_P_FCOE
);
368 fcoe
->fcoe_packet_type
.dev
= netdev
;
369 dev_add_pack(&fcoe
->fcoe_packet_type
);
371 fcoe
->fip_packet_type
.func
= fcoe_fip_recv
;
372 fcoe
->fip_packet_type
.type
= htons(ETH_P_FIP
);
373 fcoe
->fip_packet_type
.dev
= netdev
;
374 dev_add_pack(&fcoe
->fip_packet_type
);
380 * fcoe_interface_create() - Create a FCoE interface on a net device
381 * @netdev: The net device to create the FCoE interface on
382 * @fip_mode: The mode to use for FIP
384 * Returns: pointer to a struct fcoe_interface or NULL on error
386 static struct fcoe_interface
*fcoe_interface_create(struct net_device
*netdev
,
387 enum fip_state fip_mode
)
389 struct fcoe_ctlr_device
*ctlr_dev
;
390 struct fcoe_ctlr
*ctlr
;
391 struct fcoe_interface
*fcoe
;
395 if (!try_module_get(THIS_MODULE
)) {
396 FCOE_NETDEV_DBG(netdev
,
397 "Could not get a reference to the module\n");
398 fcoe
= ERR_PTR(-EBUSY
);
402 size
= sizeof(struct fcoe_ctlr
) + sizeof(struct fcoe_interface
);
403 ctlr_dev
= fcoe_ctlr_device_add(&netdev
->dev
, &fcoe_sysfs_templ
,
406 FCOE_DBG("Failed to add fcoe_ctlr_device\n");
407 fcoe
= ERR_PTR(-ENOMEM
);
411 ctlr
= fcoe_ctlr_device_priv(ctlr_dev
);
412 ctlr
->cdev
= ctlr_dev
;
413 fcoe
= fcoe_ctlr_priv(ctlr
);
420 fcoe_ctlr_init(ctlr
, fip_mode
);
421 ctlr
->send
= fcoe_fip_send
;
422 ctlr
->update_mac
= fcoe_update_src_mac
;
423 ctlr
->get_src_addr
= fcoe_get_src_mac
;
425 err
= fcoe_interface_setup(fcoe
, netdev
);
427 fcoe_ctlr_destroy(ctlr
);
428 fcoe_ctlr_device_delete(ctlr_dev
);
437 module_put(THIS_MODULE
);
443 * fcoe_interface_remove() - remove FCoE interface from netdev
444 * @fcoe: The FCoE interface to be cleaned up
446 * Caller must be holding the RTNL mutex
448 static void fcoe_interface_remove(struct fcoe_interface
*fcoe
)
450 struct net_device
*netdev
= fcoe
->netdev
;
451 struct fcoe_ctlr
*fip
= fcoe_to_ctlr(fcoe
);
452 u8 flogi_maddr
[ETH_ALEN
];
453 const struct net_device_ops
*ops
;
456 * Don't listen for Ethernet packets anymore.
457 * synchronize_net() ensures that the packet handlers are not running
458 * on another CPU. dev_remove_pack() would do that, this calls the
459 * unsyncronized version __dev_remove_pack() to avoid multiple delays.
461 __dev_remove_pack(&fcoe
->fcoe_packet_type
);
462 __dev_remove_pack(&fcoe
->fip_packet_type
);
465 /* Delete secondary MAC addresses */
466 memcpy(flogi_maddr
, (u8
[6]) FC_FCOE_FLOGI_MAC
, ETH_ALEN
);
467 dev_uc_del(netdev
, flogi_maddr
);
469 dev_uc_del(netdev
, fip
->ctl_src_addr
);
470 if (fip
->mode
== FIP_MODE_VN2VN
) {
471 dev_mc_del(netdev
, FIP_ALL_VN2VN_MACS
);
472 dev_mc_del(netdev
, FIP_ALL_P2P_MACS
);
474 dev_mc_del(netdev
, FIP_ALL_ENODE_MACS
);
476 /* Tell the LLD we are done w/ FCoE */
477 ops
= netdev
->netdev_ops
;
478 if (ops
->ndo_fcoe_disable
) {
479 if (ops
->ndo_fcoe_disable(netdev
))
480 FCOE_NETDEV_DBG(netdev
, "Failed to disable FCoE"
481 " specific feature for LLD.\n");
488 * fcoe_interface_cleanup() - Clean up a FCoE interface
489 * @fcoe: The FCoE interface to be cleaned up
491 static void fcoe_interface_cleanup(struct fcoe_interface
*fcoe
)
493 struct net_device
*netdev
= fcoe
->netdev
;
494 struct fcoe_ctlr
*fip
= fcoe_to_ctlr(fcoe
);
498 fcoe_interface_remove(fcoe
);
501 /* Release the self-reference taken during fcoe_interface_create() */
502 /* tear-down the FCoE controller */
503 fcoe_ctlr_destroy(fip
);
504 scsi_host_put(fip
->lp
->host
);
506 module_put(THIS_MODULE
);
510 * fcoe_fip_recv() - Handler for received FIP frames
511 * @skb: The receive skb
512 * @netdev: The associated net device
513 * @ptype: The packet_type structure which was used to register this handler
514 * @orig_dev: The original net_device the the skb was received on.
515 * (in case dev is a bond)
517 * Returns: 0 for success
519 static int fcoe_fip_recv(struct sk_buff
*skb
, struct net_device
*netdev
,
520 struct packet_type
*ptype
,
521 struct net_device
*orig_dev
)
523 struct fcoe_interface
*fcoe
;
524 struct fcoe_ctlr
*ctlr
;
526 fcoe
= container_of(ptype
, struct fcoe_interface
, fip_packet_type
);
527 ctlr
= fcoe_to_ctlr(fcoe
);
528 fcoe_ctlr_recv(ctlr
, skb
);
533 * fcoe_port_send() - Send an Ethernet-encapsulated FIP/FCoE frame
534 * @port: The FCoE port
535 * @skb: The FIP/FCoE packet to be sent
537 static void fcoe_port_send(struct fcoe_port
*port
, struct sk_buff
*skb
)
539 if (port
->fcoe_pending_queue
.qlen
)
540 fcoe_check_wait_queue(port
->lport
, skb
);
541 else if (fcoe_start_io(skb
))
542 fcoe_check_wait_queue(port
->lport
, skb
);
546 * fcoe_fip_send() - Send an Ethernet-encapsulated FIP frame
547 * @fip: The FCoE controller
548 * @skb: The FIP packet to be sent
550 static void fcoe_fip_send(struct fcoe_ctlr
*fip
, struct sk_buff
*skb
)
552 skb
->dev
= fcoe_from_ctlr(fip
)->netdev
;
553 fcoe_port_send(lport_priv(fip
->lp
), skb
);
557 * fcoe_update_src_mac() - Update the Ethernet MAC filters
558 * @lport: The local port to update the source MAC on
559 * @addr: Unicast MAC address to add
561 * Remove any previously-set unicast MAC filter.
562 * Add secondary FCoE MAC address filter for our OUI.
564 static void fcoe_update_src_mac(struct fc_lport
*lport
, u8
*addr
)
566 struct fcoe_port
*port
= lport_priv(lport
);
567 struct fcoe_interface
*fcoe
= port
->priv
;
569 if (!is_zero_ether_addr(port
->data_src_addr
))
570 dev_uc_del(fcoe
->netdev
, port
->data_src_addr
);
571 if (!is_zero_ether_addr(addr
))
572 dev_uc_add(fcoe
->netdev
, addr
);
573 memcpy(port
->data_src_addr
, addr
, ETH_ALEN
);
577 * fcoe_get_src_mac() - return the Ethernet source address for an lport
578 * @lport: libfc lport
580 static u8
*fcoe_get_src_mac(struct fc_lport
*lport
)
582 struct fcoe_port
*port
= lport_priv(lport
);
584 return port
->data_src_addr
;
588 * fcoe_lport_config() - Set up a local port
589 * @lport: The local port to be setup
591 * Returns: 0 for success
593 static int fcoe_lport_config(struct fc_lport
*lport
)
597 lport
->max_retry_count
= 3;
598 lport
->max_rport_retry_count
= 3;
599 lport
->e_d_tov
= 2 * 1000; /* FC-FS default */
600 lport
->r_a_tov
= 2 * 2 * 1000;
601 lport
->service_params
= (FCP_SPPF_INIT_FCN
| FCP_SPPF_RD_XRDY_DIS
|
602 FCP_SPPF_RETRY
| FCP_SPPF_CONF_COMPL
);
603 lport
->does_npiv
= 1;
605 fc_lport_init_stats(lport
);
607 /* lport fc_lport related configuration */
608 fc_lport_config(lport
);
610 /* offload related configuration */
611 lport
->crc_offload
= 0;
612 lport
->seq_offload
= 0;
613 lport
->lro_enabled
= 0;
621 * fcoe_netdev_features_change - Updates the lport's offload flags based
622 * on the LLD netdev's FCoE feature flags
624 static void fcoe_netdev_features_change(struct fc_lport
*lport
,
625 struct net_device
*netdev
)
627 mutex_lock(&lport
->lp_mutex
);
629 if (netdev
->features
& NETIF_F_SG
)
634 if (netdev
->features
& NETIF_F_FCOE_CRC
) {
635 lport
->crc_offload
= 1;
636 FCOE_NETDEV_DBG(netdev
, "Supports FCCRC offload\n");
638 lport
->crc_offload
= 0;
641 if (netdev
->features
& NETIF_F_FSO
) {
642 lport
->seq_offload
= 1;
643 lport
->lso_max
= netdev
->gso_max_size
;
644 FCOE_NETDEV_DBG(netdev
, "Supports LSO for max len 0x%x\n",
647 lport
->seq_offload
= 0;
651 if (netdev
->fcoe_ddp_xid
) {
652 lport
->lro_enabled
= 1;
653 lport
->lro_xid
= netdev
->fcoe_ddp_xid
;
654 FCOE_NETDEV_DBG(netdev
, "Supports LRO for max xid 0x%x\n",
657 lport
->lro_enabled
= 0;
661 mutex_unlock(&lport
->lp_mutex
);
665 * fcoe_netdev_config() - Set up net devive for SW FCoE
666 * @lport: The local port that is associated with the net device
667 * @netdev: The associated net device
669 * Must be called after fcoe_lport_config() as it will use local port mutex
671 * Returns: 0 for success
673 static int fcoe_netdev_config(struct fc_lport
*lport
, struct net_device
*netdev
)
677 struct fcoe_interface
*fcoe
;
678 struct fcoe_ctlr
*ctlr
;
679 struct fcoe_port
*port
;
681 /* Setup lport private data to point to fcoe softc */
682 port
= lport_priv(lport
);
684 ctlr
= fcoe_to_ctlr(fcoe
);
687 * Determine max frame size based on underlying device and optional
688 * user-configured limit. If the MFS is too low, fcoe_link_ok()
689 * will return 0, so do this first.
692 if (netdev
->features
& NETIF_F_FCOE_MTU
) {
694 FCOE_NETDEV_DBG(netdev
, "Supports FCOE_MTU of %d bytes\n", mfs
);
696 mfs
-= (sizeof(struct fcoe_hdr
) + sizeof(struct fcoe_crc_eof
));
697 if (fc_set_mfs(lport
, mfs
))
700 /* offload features support */
701 fcoe_netdev_features_change(lport
, netdev
);
703 skb_queue_head_init(&port
->fcoe_pending_queue
);
704 port
->fcoe_pending_queue_active
= 0;
705 setup_timer(&port
->timer
, fcoe_queue_timer
, (unsigned long)lport
);
707 fcoe_link_speed_update(lport
);
710 if (fcoe_get_wwn(netdev
, &wwnn
, NETDEV_FCOE_WWNN
))
711 wwnn
= fcoe_wwn_from_mac(ctlr
->ctl_src_addr
, 1, 0);
712 fc_set_wwnn(lport
, wwnn
);
713 if (fcoe_get_wwn(netdev
, &wwpn
, NETDEV_FCOE_WWPN
))
714 wwpn
= fcoe_wwn_from_mac(ctlr
->ctl_src_addr
,
716 fc_set_wwpn(lport
, wwpn
);
723 * fcoe_shost_config() - Set up the SCSI host associated with a local port
724 * @lport: The local port
725 * @dev: The device associated with the SCSI host
727 * Must be called after fcoe_lport_config() and fcoe_netdev_config()
729 * Returns: 0 for success
731 static int fcoe_shost_config(struct fc_lport
*lport
, struct device
*dev
)
735 /* lport scsi host config */
736 lport
->host
->max_lun
= FCOE_MAX_LUN
;
737 lport
->host
->max_id
= FCOE_MAX_FCP_TARGET
;
738 lport
->host
->max_channel
= 0;
739 lport
->host
->max_cmd_len
= FCOE_MAX_CMD_LEN
;
742 lport
->host
->transportt
= fcoe_vport_scsi_transport
;
744 lport
->host
->transportt
= fcoe_nport_scsi_transport
;
746 /* add the new host to the SCSI-ml */
747 rc
= scsi_add_host(lport
->host
, dev
);
749 FCOE_NETDEV_DBG(fcoe_netdev(lport
), "fcoe_shost_config: "
750 "error on scsi_add_host\n");
755 fc_host_max_npiv_vports(lport
->host
) = USHRT_MAX
;
757 snprintf(fc_host_symbolic_name(lport
->host
), FC_SYMBOLIC_NAME_SIZE
,
758 "%s v%s over %s", FCOE_NAME
, FCOE_VERSION
,
759 fcoe_netdev(lport
)->name
);
766 * fcoe_fdmi_info() - Get FDMI related info from net devive for SW FCoE
767 * @lport: The local port that is associated with the net device
768 * @netdev: The associated net device
770 * Must be called after fcoe_shost_config() as it will use local port mutex
773 static void fcoe_fdmi_info(struct fc_lport
*lport
, struct net_device
*netdev
)
775 struct fcoe_interface
*fcoe
;
776 struct fcoe_port
*port
;
777 struct net_device
*realdev
;
780 port
= lport_priv(lport
);
782 realdev
= fcoe
->realdev
;
787 /* No FDMI state m/c for NPIV ports */
791 if (realdev
->netdev_ops
->ndo_fcoe_get_hbainfo
) {
792 struct netdev_fcoe_hbainfo
*fdmi
;
793 fdmi
= kzalloc(sizeof(*fdmi
), GFP_KERNEL
);
797 rc
= realdev
->netdev_ops
->ndo_fcoe_get_hbainfo(realdev
,
800 printk(KERN_INFO
"fcoe: Failed to retrieve FDMI "
801 "information from netdev.\n");
805 snprintf(fc_host_serial_number(lport
->host
),
806 FC_SERIAL_NUMBER_SIZE
,
808 fdmi
->serial_number
);
809 snprintf(fc_host_manufacturer(lport
->host
),
810 FC_SERIAL_NUMBER_SIZE
,
813 snprintf(fc_host_model(lport
->host
),
814 FC_SYMBOLIC_NAME_SIZE
,
817 snprintf(fc_host_model_description(lport
->host
),
818 FC_SYMBOLIC_NAME_SIZE
,
820 fdmi
->model_description
);
821 snprintf(fc_host_hardware_version(lport
->host
),
822 FC_VERSION_STRING_SIZE
,
824 fdmi
->hardware_version
);
825 snprintf(fc_host_driver_version(lport
->host
),
826 FC_VERSION_STRING_SIZE
,
828 fdmi
->driver_version
);
829 snprintf(fc_host_optionrom_version(lport
->host
),
830 FC_VERSION_STRING_SIZE
,
832 fdmi
->optionrom_version
);
833 snprintf(fc_host_firmware_version(lport
->host
),
834 FC_VERSION_STRING_SIZE
,
836 fdmi
->firmware_version
);
838 /* Enable FDMI lport states */
839 lport
->fdmi_enabled
= 1;
842 lport
->fdmi_enabled
= 0;
843 printk(KERN_INFO
"fcoe: No FDMI support.\n");
848 * fcoe_oem_match() - The match routine for the offloaded exchange manager
851 * This routine will be associated with an exchange manager (EM). When
852 * the libfc exchange handling code is looking for an EM to use it will
853 * call this routine and pass it the frame that it wishes to send. This
854 * routine will return True if the associated EM is to be used and False
855 * if the echange code should continue looking for an EM.
857 * The offload EM that this routine is associated with will handle any
858 * packets that are for SCSI read requests.
860 * This has been enhanced to work when FCoE stack is operating in target
863 * Returns: True for read types I/O, otherwise returns false.
865 static bool fcoe_oem_match(struct fc_frame
*fp
)
867 struct fc_frame_header
*fh
= fc_frame_header_get(fp
);
868 struct fcp_cmnd
*fcp
;
870 if (fc_fcp_is_read(fr_fsp(fp
)) &&
871 (fr_fsp(fp
)->data_len
> fcoe_ddp_min
))
873 else if ((fr_fsp(fp
) == NULL
) &&
874 (fh
->fh_r_ctl
== FC_RCTL_DD_UNSOL_CMD
) &&
875 (ntohs(fh
->fh_rx_id
) == FC_XID_UNKNOWN
)) {
876 fcp
= fc_frame_payload_get(fp
, sizeof(*fcp
));
877 if ((fcp
->fc_flags
& FCP_CFL_WRDATA
) &&
878 (ntohl(fcp
->fc_dl
) > fcoe_ddp_min
))
885 * fcoe_em_config() - Allocate and configure an exchange manager
886 * @lport: The local port that the new EM will be associated with
888 * Returns: 0 on success
890 static inline int fcoe_em_config(struct fc_lport
*lport
)
892 struct fcoe_port
*port
= lport_priv(lport
);
893 struct fcoe_interface
*fcoe
= port
->priv
;
894 struct fcoe_interface
*oldfcoe
= NULL
;
895 struct net_device
*old_real_dev
, *cur_real_dev
;
896 u16 min_xid
= FCOE_MIN_XID
;
897 u16 max_xid
= FCOE_MAX_XID
;
900 * Check if need to allocate an em instance for
901 * offload exchange ids to be shared across all VN_PORTs/lport.
903 if (!lport
->lro_enabled
|| !lport
->lro_xid
||
904 (lport
->lro_xid
>= max_xid
)) {
910 * Reuse existing offload em instance in case
911 * it is already allocated on real eth device
913 if (fcoe
->netdev
->priv_flags
& IFF_802_1Q_VLAN
)
914 cur_real_dev
= vlan_dev_real_dev(fcoe
->netdev
);
916 cur_real_dev
= fcoe
->netdev
;
918 list_for_each_entry(oldfcoe
, &fcoe_hostlist
, list
) {
919 if (oldfcoe
->netdev
->priv_flags
& IFF_802_1Q_VLAN
)
920 old_real_dev
= vlan_dev_real_dev(oldfcoe
->netdev
);
922 old_real_dev
= oldfcoe
->netdev
;
924 if (cur_real_dev
== old_real_dev
) {
925 fcoe
->oem
= oldfcoe
->oem
;
931 if (!fc_exch_mgr_add(lport
, fcoe
->oem
, fcoe_oem_match
)) {
932 printk(KERN_ERR
"fcoe_em_config: failed to add "
933 "offload em:%p on interface:%s\n",
934 fcoe
->oem
, fcoe
->netdev
->name
);
938 fcoe
->oem
= fc_exch_mgr_alloc(lport
, FC_CLASS_3
,
939 FCOE_MIN_XID
, lport
->lro_xid
,
942 printk(KERN_ERR
"fcoe_em_config: failed to allocate "
943 "em for offload exches on interface:%s\n",
950 * Exclude offload EM xid range from next EM xid range.
952 min_xid
+= lport
->lro_xid
+ 1;
955 if (!fc_exch_mgr_alloc(lport
, FC_CLASS_3
, min_xid
, max_xid
, NULL
)) {
956 printk(KERN_ERR
"fcoe_em_config: failed to "
957 "allocate em on interface %s\n", fcoe
->netdev
->name
);
965 * fcoe_if_destroy() - Tear down a SW FCoE instance
966 * @lport: The local port to be destroyed
969 static void fcoe_if_destroy(struct fc_lport
*lport
)
971 struct fcoe_port
*port
= lport_priv(lport
);
972 struct fcoe_interface
*fcoe
= port
->priv
;
973 struct net_device
*netdev
= fcoe
->netdev
;
975 FCOE_NETDEV_DBG(netdev
, "Destroying interface\n");
977 /* Logout of the fabric */
978 fc_fabric_logoff(lport
);
980 /* Cleanup the fc_lport */
981 fc_lport_destroy(lport
);
983 /* Stop the transmit retry timer */
984 del_timer_sync(&port
->timer
);
986 /* Free existing transmit skbs */
987 fcoe_clean_pending_queue(lport
);
990 if (!is_zero_ether_addr(port
->data_src_addr
))
991 dev_uc_del(netdev
, port
->data_src_addr
);
995 fcoe_interface_remove(fcoe
);
998 /* Free queued packets for the per-CPU receive threads */
999 fcoe_percpu_clean(lport
);
1001 /* Detach from the scsi-ml */
1002 fc_remove_host(lport
->host
);
1003 scsi_remove_host(lport
->host
);
1005 /* Destroy lport scsi_priv */
1006 fc_fcp_destroy(lport
);
1008 /* There are no more rports or I/O, free the EM */
1009 fc_exch_mgr_free(lport
);
1011 /* Free memory used by statistical counters */
1012 fc_lport_free_stats(lport
);
1015 * Release the Scsi_Host for vport but hold on to
1016 * master lport until it fcoe interface fully cleaned-up.
1019 scsi_host_put(lport
->host
);
1023 * fcoe_ddp_setup() - Call a LLD's ddp_setup through the net device
1024 * @lport: The local port to setup DDP for
1025 * @xid: The exchange ID for this DDP transfer
1026 * @sgl: The scatterlist describing this transfer
1027 * @sgc: The number of sg items
1029 * Returns: 0 if the DDP context was not configured
1031 static int fcoe_ddp_setup(struct fc_lport
*lport
, u16 xid
,
1032 struct scatterlist
*sgl
, unsigned int sgc
)
1034 struct net_device
*netdev
= fcoe_netdev(lport
);
1036 if (netdev
->netdev_ops
->ndo_fcoe_ddp_setup
)
1037 return netdev
->netdev_ops
->ndo_fcoe_ddp_setup(netdev
,
1045 * fcoe_ddp_target() - Call a LLD's ddp_target through the net device
1046 * @lport: The local port to setup DDP for
1047 * @xid: The exchange ID for this DDP transfer
1048 * @sgl: The scatterlist describing this transfer
1049 * @sgc: The number of sg items
1051 * Returns: 0 if the DDP context was not configured
1053 static int fcoe_ddp_target(struct fc_lport
*lport
, u16 xid
,
1054 struct scatterlist
*sgl
, unsigned int sgc
)
1056 struct net_device
*netdev
= fcoe_netdev(lport
);
1058 if (netdev
->netdev_ops
->ndo_fcoe_ddp_target
)
1059 return netdev
->netdev_ops
->ndo_fcoe_ddp_target(netdev
, xid
,
1067 * fcoe_ddp_done() - Call a LLD's ddp_done through the net device
1068 * @lport: The local port to complete DDP on
1069 * @xid: The exchange ID for this DDP transfer
1071 * Returns: the length of data that have been completed by DDP
1073 static int fcoe_ddp_done(struct fc_lport
*lport
, u16 xid
)
1075 struct net_device
*netdev
= fcoe_netdev(lport
);
1077 if (netdev
->netdev_ops
->ndo_fcoe_ddp_done
)
1078 return netdev
->netdev_ops
->ndo_fcoe_ddp_done(netdev
, xid
);
1083 * fcoe_if_create() - Create a FCoE instance on an interface
1084 * @fcoe: The FCoE interface to create a local port on
1085 * @parent: The device pointer to be the parent in sysfs for the SCSI host
1086 * @npiv: Indicates if the port is a vport or not
1088 * Creates a fc_lport instance and a Scsi_Host instance and configure them.
1090 * Returns: The allocated fc_lport or an error pointer
1092 static struct fc_lport
*fcoe_if_create(struct fcoe_interface
*fcoe
,
1093 struct device
*parent
, int npiv
)
1095 struct fcoe_ctlr
*ctlr
= fcoe_to_ctlr(fcoe
);
1096 struct net_device
*netdev
= fcoe
->netdev
;
1097 struct fc_lport
*lport
, *n_port
;
1098 struct fcoe_port
*port
;
1099 struct Scsi_Host
*shost
;
1102 * parent is only a vport if npiv is 1,
1103 * but we'll only use vport in that case so go ahead and set it
1105 struct fc_vport
*vport
= dev_to_vport(parent
);
1107 FCOE_NETDEV_DBG(netdev
, "Create Interface\n");
1110 lport
= libfc_host_alloc(&fcoe_shost_template
, sizeof(*port
));
1112 lport
= libfc_vport_create(vport
, sizeof(*port
));
1115 FCOE_NETDEV_DBG(netdev
, "Could not allocate host structure\n");
1119 port
= lport_priv(lport
);
1120 port
->lport
= lport
;
1122 port
->get_netdev
= fcoe_netdev
;
1123 port
->max_queue_depth
= FCOE_MAX_QUEUE_DEPTH
;
1124 port
->min_queue_depth
= FCOE_MIN_QUEUE_DEPTH
;
1125 INIT_WORK(&port
->destroy_work
, fcoe_destroy_work
);
1128 * Need to add the lport to the hostlist
1129 * so we catch NETDEV_CHANGE events.
1131 fcoe_hostlist_add(lport
);
1133 /* configure a fc_lport including the exchange manager */
1134 rc
= fcoe_lport_config(lport
);
1136 FCOE_NETDEV_DBG(netdev
, "Could not configure lport for the "
1142 FCOE_NETDEV_DBG(netdev
, "Setting vport names, "
1143 "%16.16llx %16.16llx\n",
1144 vport
->node_name
, vport
->port_name
);
1145 fc_set_wwnn(lport
, vport
->node_name
);
1146 fc_set_wwpn(lport
, vport
->port_name
);
1149 /* configure lport network properties */
1150 rc
= fcoe_netdev_config(lport
, netdev
);
1152 FCOE_NETDEV_DBG(netdev
, "Could not configure netdev for the "
1154 goto out_lp_destroy
;
1157 /* configure lport scsi host properties */
1158 rc
= fcoe_shost_config(lport
, parent
);
1160 FCOE_NETDEV_DBG(netdev
, "Could not configure shost for the "
1162 goto out_lp_destroy
;
1165 /* Initialize the library */
1166 rc
= fcoe_libfc_config(lport
, ctlr
, &fcoe_libfc_fcn_templ
, 1);
1168 FCOE_NETDEV_DBG(netdev
, "Could not configure libfc for the "
1170 goto out_lp_destroy
;
1173 /* Initialized FDMI information */
1174 fcoe_fdmi_info(lport
, netdev
);
1177 * fcoe_em_alloc() and fcoe_hostlist_add() both
1178 * need to be atomic with respect to other changes to the
1179 * hostlist since fcoe_em_alloc() looks for an existing EM
1180 * instance on host list updated by fcoe_hostlist_add().
1182 * This is currently handled through the fcoe_config_mutex
1186 /* lport exch manager allocation */
1187 rc
= fcoe_em_config(lport
);
1189 shost
= vport_to_shost(vport
);
1190 n_port
= shost_priv(shost
);
1191 rc
= fc_exch_mgr_list_clone(n_port
, lport
);
1195 FCOE_NETDEV_DBG(netdev
, "Could not configure the EM\n");
1196 goto out_lp_destroy
;
1202 fc_exch_mgr_free(lport
);
1204 fcoe_hostlist_del(lport
);
1205 scsi_host_put(lport
->host
);
1211 * fcoe_if_init() - Initialization routine for fcoe.ko
1213 * Attaches the SW FCoE transport to the FC transport
1215 * Returns: 0 on success
1217 static int __init
fcoe_if_init(void)
1219 /* attach to scsi transport */
1220 fcoe_nport_scsi_transport
=
1221 fc_attach_transport(&fcoe_nport_fc_functions
);
1222 fcoe_vport_scsi_transport
=
1223 fc_attach_transport(&fcoe_vport_fc_functions
);
1225 if (!fcoe_nport_scsi_transport
) {
1226 printk(KERN_ERR
"fcoe: Failed to attach to the FC transport\n");
1234 * fcoe_if_exit() - Tear down fcoe.ko
1236 * Detaches the SW FCoE transport from the FC transport
1238 * Returns: 0 on success
1240 static int __exit
fcoe_if_exit(void)
1242 fc_release_transport(fcoe_nport_scsi_transport
);
1243 fc_release_transport(fcoe_vport_scsi_transport
);
1244 fcoe_nport_scsi_transport
= NULL
;
1245 fcoe_vport_scsi_transport
= NULL
;
1250 * fcoe_percpu_thread_create() - Create a receive thread for an online CPU
1251 * @cpu: The CPU index of the CPU to create a receive thread for
1253 static void fcoe_percpu_thread_create(unsigned int cpu
)
1255 struct fcoe_percpu_s
*p
;
1256 struct task_struct
*thread
;
1258 p
= &per_cpu(fcoe_percpu
, cpu
);
1260 thread
= kthread_create_on_node(fcoe_percpu_receive_thread
,
1261 (void *)p
, cpu_to_node(cpu
),
1262 "fcoethread/%d", cpu
);
1264 if (likely(!IS_ERR(thread
))) {
1265 kthread_bind(thread
, cpu
);
1266 wake_up_process(thread
);
1268 spin_lock_bh(&p
->fcoe_rx_list
.lock
);
1270 spin_unlock_bh(&p
->fcoe_rx_list
.lock
);
1275 * fcoe_percpu_thread_destroy() - Remove the receive thread of a CPU
1276 * @cpu: The CPU index of the CPU whose receive thread is to be destroyed
1278 * Destroys a per-CPU Rx thread. Any pending skbs are moved to the
1279 * current CPU's Rx thread. If the thread being destroyed is bound to
1280 * the CPU processing this context the skbs will be freed.
1282 static void fcoe_percpu_thread_destroy(unsigned int cpu
)
1284 struct fcoe_percpu_s
*p
;
1285 struct task_struct
*thread
;
1286 struct page
*crc_eof
;
1287 struct sk_buff
*skb
;
1289 struct fcoe_percpu_s
*p0
;
1290 unsigned targ_cpu
= get_cpu();
1291 #endif /* CONFIG_SMP */
1293 FCOE_DBG("Destroying receive thread for CPU %d\n", cpu
);
1295 /* Prevent any new skbs from being queued for this CPU. */
1296 p
= &per_cpu(fcoe_percpu
, cpu
);
1297 spin_lock_bh(&p
->fcoe_rx_list
.lock
);
1300 crc_eof
= p
->crc_eof_page
;
1301 p
->crc_eof_page
= NULL
;
1302 p
->crc_eof_offset
= 0;
1303 spin_unlock_bh(&p
->fcoe_rx_list
.lock
);
1307 * Don't bother moving the skb's if this context is running
1308 * on the same CPU that is having its thread destroyed. This
1309 * can easily happen when the module is removed.
1311 if (cpu
!= targ_cpu
) {
1312 p0
= &per_cpu(fcoe_percpu
, targ_cpu
);
1313 spin_lock_bh(&p0
->fcoe_rx_list
.lock
);
1315 FCOE_DBG("Moving frames from CPU %d to CPU %d\n",
1318 while ((skb
= __skb_dequeue(&p
->fcoe_rx_list
)) != NULL
)
1319 __skb_queue_tail(&p0
->fcoe_rx_list
, skb
);
1320 spin_unlock_bh(&p0
->fcoe_rx_list
.lock
);
1323 * The targeted CPU is not initialized and cannot accept
1324 * new skbs. Unlock the targeted CPU and drop the skbs
1325 * on the CPU that is going offline.
1327 while ((skb
= __skb_dequeue(&p
->fcoe_rx_list
)) != NULL
)
1329 spin_unlock_bh(&p0
->fcoe_rx_list
.lock
);
1333 * This scenario occurs when the module is being removed
1334 * and all threads are being destroyed. skbs will continue
1335 * to be shifted from the CPU thread that is being removed
1336 * to the CPU thread associated with the CPU that is processing
1337 * the module removal. Once there is only one CPU Rx thread it
1338 * will reach this case and we will drop all skbs and later
1341 spin_lock_bh(&p
->fcoe_rx_list
.lock
);
1342 while ((skb
= __skb_dequeue(&p
->fcoe_rx_list
)) != NULL
)
1344 spin_unlock_bh(&p
->fcoe_rx_list
.lock
);
1349 * This a non-SMP scenario where the singular Rx thread is
1350 * being removed. Free all skbs and stop the thread.
1352 spin_lock_bh(&p
->fcoe_rx_list
.lock
);
1353 while ((skb
= __skb_dequeue(&p
->fcoe_rx_list
)) != NULL
)
1355 spin_unlock_bh(&p
->fcoe_rx_list
.lock
);
1359 kthread_stop(thread
);
1366 * fcoe_cpu_callback() - Handler for CPU hotplug events
1367 * @nfb: The callback data block
1368 * @action: The event triggering the callback
1369 * @hcpu: The index of the CPU that the event is for
1371 * This creates or destroys per-CPU data for fcoe
1373 * Returns NOTIFY_OK always.
1375 static int fcoe_cpu_callback(struct notifier_block
*nfb
,
1376 unsigned long action
, void *hcpu
)
1378 unsigned cpu
= (unsigned long)hcpu
;
1382 case CPU_ONLINE_FROZEN
:
1383 FCOE_DBG("CPU %x online: Create Rx thread\n", cpu
);
1384 fcoe_percpu_thread_create(cpu
);
1387 case CPU_DEAD_FROZEN
:
1388 FCOE_DBG("CPU %x offline: Remove Rx thread\n", cpu
);
1389 fcoe_percpu_thread_destroy(cpu
);
1398 * fcoe_select_cpu() - Selects CPU to handle post-processing of incoming
1401 * This routine selects next CPU based on cpumask to distribute
1402 * incoming requests in round robin.
1404 * Returns: int CPU number
1406 static inline unsigned int fcoe_select_cpu(void)
1408 static unsigned int selected_cpu
;
1410 selected_cpu
= cpumask_next(selected_cpu
, cpu_online_mask
);
1411 if (selected_cpu
>= nr_cpu_ids
)
1412 selected_cpu
= cpumask_first(cpu_online_mask
);
1414 return selected_cpu
;
1418 * fcoe_rcv() - Receive packets from a net device
1419 * @skb: The received packet
1420 * @netdev: The net device that the packet was received on
1421 * @ptype: The packet type context
1422 * @olddev: The last device net device
1424 * This routine is called by NET_RX_SOFTIRQ. It receives a packet, builds a
1425 * FC frame and passes the frame to libfc.
1427 * Returns: 0 for success
1429 static int fcoe_rcv(struct sk_buff
*skb
, struct net_device
*netdev
,
1430 struct packet_type
*ptype
, struct net_device
*olddev
)
1432 struct fc_lport
*lport
;
1433 struct fcoe_rcv_info
*fr
;
1434 struct fcoe_ctlr
*ctlr
;
1435 struct fcoe_interface
*fcoe
;
1436 struct fc_frame_header
*fh
;
1437 struct fcoe_percpu_s
*fps
;
1441 fcoe
= container_of(ptype
, struct fcoe_interface
, fcoe_packet_type
);
1442 ctlr
= fcoe_to_ctlr(fcoe
);
1444 if (unlikely(!lport
)) {
1445 FCOE_NETDEV_DBG(netdev
, "Cannot find hba structure\n");
1448 if (!lport
->link_up
)
1451 FCOE_NETDEV_DBG(netdev
,
1452 "skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n",
1453 skb
->len
, skb
->data_len
, skb
->head
, skb
->data
,
1454 skb_tail_pointer(skb
), skb_end_pointer(skb
),
1455 skb
->csum
, skb
->dev
? skb
->dev
->name
: "<NULL>");
1458 skb
= skb_share_check(skb
, GFP_ATOMIC
);
1465 if (is_fip_mode(ctlr
) &&
1466 !ether_addr_equal(eh
->h_source
, ctlr
->dest_addr
)) {
1467 FCOE_NETDEV_DBG(netdev
, "wrong source mac address:%pM\n",
1473 * Check for minimum frame length, and make sure required FCoE
1474 * and FC headers are pulled into the linear data area.
1476 if (unlikely((skb
->len
< FCOE_MIN_FRAME
) ||
1477 !pskb_may_pull(skb
, FCOE_HEADER_LEN
)))
1480 skb_set_transport_header(skb
, sizeof(struct fcoe_hdr
));
1481 fh
= (struct fc_frame_header
*) skb_transport_header(skb
);
1483 if (ntoh24(&eh
->h_dest
[3]) != ntoh24(fh
->fh_d_id
)) {
1484 FCOE_NETDEV_DBG(netdev
, "FC frame d_id mismatch with MAC:%pM\n",
1489 fr
= fcoe_dev_from_skb(skb
);
1493 * In case the incoming frame's exchange is originated from
1494 * the initiator, then received frame's exchange id is ANDed
1495 * with fc_cpu_mask bits to get the same cpu on which exchange
1496 * was originated, otherwise select cpu using rx exchange id
1497 * or fcoe_select_cpu().
1499 if (ntoh24(fh
->fh_f_ctl
) & FC_FC_EX_CTX
)
1500 cpu
= ntohs(fh
->fh_ox_id
) & fc_cpu_mask
;
1502 if (ntohs(fh
->fh_rx_id
) == FC_XID_UNKNOWN
)
1503 cpu
= fcoe_select_cpu();
1505 cpu
= ntohs(fh
->fh_rx_id
) & fc_cpu_mask
;
1508 if (cpu
>= nr_cpu_ids
)
1511 fps
= &per_cpu(fcoe_percpu
, cpu
);
1512 spin_lock(&fps
->fcoe_rx_list
.lock
);
1513 if (unlikely(!fps
->thread
)) {
1515 * The targeted CPU is not ready, let's target
1516 * the first CPU now. For non-SMP systems this
1517 * will check the same CPU twice.
1519 FCOE_NETDEV_DBG(netdev
, "CPU is online, but no receive thread "
1520 "ready for incoming skb- using first online "
1523 spin_unlock(&fps
->fcoe_rx_list
.lock
);
1524 cpu
= cpumask_first(cpu_online_mask
);
1525 fps
= &per_cpu(fcoe_percpu
, cpu
);
1526 spin_lock(&fps
->fcoe_rx_list
.lock
);
1528 spin_unlock(&fps
->fcoe_rx_list
.lock
);
1534 * We now have a valid CPU that we're targeting for
1535 * this skb. We also have this receive thread locked,
1536 * so we're free to queue skbs into it's queue.
1540 * Note: We used to have a set of conditions under which we would
1541 * call fcoe_recv_frame directly, rather than queuing to the rx list
1542 * as it could save a few cycles, but doing so is prohibited, as
1543 * fcoe_recv_frame has several paths that may sleep, which is forbidden
1544 * in softirq context.
1546 __skb_queue_tail(&fps
->fcoe_rx_list
, skb
);
1547 if (fps
->thread
->state
== TASK_INTERRUPTIBLE
)
1548 wake_up_process(fps
->thread
);
1549 spin_unlock(&fps
->fcoe_rx_list
.lock
);
1551 return NET_RX_SUCCESS
;
1553 per_cpu_ptr(lport
->stats
, get_cpu())->ErrorFrames
++;
1561 * fcoe_alloc_paged_crc_eof() - Allocate a page to be used for the trailer CRC
1562 * @skb: The packet to be transmitted
1563 * @tlen: The total length of the trailer
1565 * Returns: 0 for success
1567 static int fcoe_alloc_paged_crc_eof(struct sk_buff
*skb
, int tlen
)
1569 struct fcoe_percpu_s
*fps
;
1572 fps
= &get_cpu_var(fcoe_percpu
);
1573 rc
= fcoe_get_paged_crc_eof(skb
, tlen
, fps
);
1574 put_cpu_var(fcoe_percpu
);
1580 * fcoe_xmit() - Transmit a FCoE frame
1581 * @lport: The local port that the frame is to be transmitted for
1582 * @fp: The frame to be transmitted
1584 * Return: 0 for success
1586 static int fcoe_xmit(struct fc_lport
*lport
, struct fc_frame
*fp
)
1591 struct fcoe_crc_eof
*cp
;
1592 struct sk_buff
*skb
;
1593 struct fc_stats
*stats
;
1594 struct fc_frame_header
*fh
;
1595 unsigned int hlen
; /* header length implies the version */
1596 unsigned int tlen
; /* trailer length */
1597 unsigned int elen
; /* eth header, may include vlan */
1598 struct fcoe_port
*port
= lport_priv(lport
);
1599 struct fcoe_interface
*fcoe
= port
->priv
;
1600 struct fcoe_ctlr
*ctlr
= fcoe_to_ctlr(fcoe
);
1602 struct fcoe_hdr
*hp
;
1604 WARN_ON((fr_len(fp
) % sizeof(u32
)) != 0);
1606 fh
= fc_frame_header_get(fp
);
1608 wlen
= skb
->len
/ FCOE_WORD_TO_BYTE
;
1610 if (!lport
->link_up
) {
1615 if (unlikely(fh
->fh_type
== FC_TYPE_ELS
) &&
1616 fcoe_ctlr_els_send(ctlr
, lport
, skb
))
1622 elen
= sizeof(struct ethhdr
);
1623 hlen
= sizeof(struct fcoe_hdr
);
1624 tlen
= sizeof(struct fcoe_crc_eof
);
1625 wlen
= (skb
->len
- tlen
+ sizeof(crc
)) / FCOE_WORD_TO_BYTE
;
1628 if (likely(lport
->crc_offload
)) {
1629 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1630 skb
->csum_start
= skb_headroom(skb
);
1631 skb
->csum_offset
= skb
->len
;
1634 skb
->ip_summed
= CHECKSUM_NONE
;
1635 crc
= fcoe_fc_crc(fp
);
1638 /* copy port crc and eof to the skb buff */
1639 if (skb_is_nonlinear(skb
)) {
1641 if (fcoe_alloc_paged_crc_eof(skb
, tlen
)) {
1645 frag
= &skb_shinfo(skb
)->frags
[skb_shinfo(skb
)->nr_frags
- 1];
1646 cp
= kmap_atomic(skb_frag_page(frag
))
1647 + frag
->page_offset
;
1649 cp
= (struct fcoe_crc_eof
*)skb_put(skb
, tlen
);
1652 memset(cp
, 0, sizeof(*cp
));
1654 cp
->fcoe_crc32
= cpu_to_le32(~crc
);
1656 if (skb_is_nonlinear(skb
)) {
1661 /* adjust skb network/transport offsets to match mac/fcoe/port */
1662 skb_push(skb
, elen
+ hlen
);
1663 skb_reset_mac_header(skb
);
1664 skb_reset_network_header(skb
);
1665 skb
->mac_len
= elen
;
1666 skb
->protocol
= htons(ETH_P_FCOE
);
1667 skb
->priority
= fcoe
->priority
;
1669 if (fcoe
->netdev
->priv_flags
& IFF_802_1Q_VLAN
&&
1670 fcoe
->realdev
->features
& NETIF_F_HW_VLAN_CTAG_TX
) {
1671 /* must set skb->dev before calling vlan_put_tag */
1672 skb
->dev
= fcoe
->realdev
;
1673 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
),
1674 vlan_dev_vlan_id(fcoe
->netdev
));
1676 skb
->dev
= fcoe
->netdev
;
1678 /* fill up mac and fcoe headers */
1680 eh
->h_proto
= htons(ETH_P_FCOE
);
1681 memcpy(eh
->h_dest
, ctlr
->dest_addr
, ETH_ALEN
);
1683 memcpy(eh
->h_dest
+ 3, fh
->fh_d_id
, 3);
1685 if (unlikely(ctlr
->flogi_oxid
!= FC_XID_UNKNOWN
))
1686 memcpy(eh
->h_source
, ctlr
->ctl_src_addr
, ETH_ALEN
);
1688 memcpy(eh
->h_source
, port
->data_src_addr
, ETH_ALEN
);
1690 hp
= (struct fcoe_hdr
*)(eh
+ 1);
1691 memset(hp
, 0, sizeof(*hp
));
1693 FC_FCOE_ENCAPS_VER(hp
, FC_FCOE_VER
);
1696 /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
1697 if (lport
->seq_offload
&& fr_max_payload(fp
)) {
1698 skb_shinfo(skb
)->gso_type
= SKB_GSO_FCOE
;
1699 skb_shinfo(skb
)->gso_size
= fr_max_payload(fp
);
1701 skb_shinfo(skb
)->gso_type
= 0;
1702 skb_shinfo(skb
)->gso_size
= 0;
1704 /* update tx stats: regardless if LLD fails */
1705 stats
= per_cpu_ptr(lport
->stats
, get_cpu());
1707 stats
->TxWords
+= wlen
;
1710 /* send down to lld */
1712 fcoe_port_send(port
, skb
);
1717 * fcoe_percpu_flush_done() - Indicate per-CPU queue flush completion
1718 * @skb: The completed skb (argument required by destructor)
1720 static void fcoe_percpu_flush_done(struct sk_buff
*skb
)
1722 complete(&fcoe_flush_completion
);
1726 * fcoe_filter_frames() - filter out bad fcoe frames, i.e. bad CRC
1727 * @lport: The local port the frame was received on
1728 * @fp: The received frame
1730 * Return: 0 on passing filtering checks
1732 static inline int fcoe_filter_frames(struct fc_lport
*lport
,
1733 struct fc_frame
*fp
)
1735 struct fcoe_ctlr
*ctlr
;
1736 struct fcoe_interface
*fcoe
;
1737 struct fc_frame_header
*fh
;
1738 struct sk_buff
*skb
= (struct sk_buff
*)fp
;
1739 struct fc_stats
*stats
;
1742 * We only check CRC if no offload is available and if it is
1743 * it's solicited data, in which case, the FCP layer would
1744 * check it during the copy.
1746 if (lport
->crc_offload
&& skb
->ip_summed
== CHECKSUM_UNNECESSARY
)
1747 fr_flags(fp
) &= ~FCPHF_CRC_UNCHECKED
;
1749 fr_flags(fp
) |= FCPHF_CRC_UNCHECKED
;
1751 fh
= (struct fc_frame_header
*) skb_transport_header(skb
);
1752 fh
= fc_frame_header_get(fp
);
1753 if (fh
->fh_r_ctl
== FC_RCTL_DD_SOL_DATA
&& fh
->fh_type
== FC_TYPE_FCP
)
1756 fcoe
= ((struct fcoe_port
*)lport_priv(lport
))->priv
;
1757 ctlr
= fcoe_to_ctlr(fcoe
);
1758 if (is_fip_mode(ctlr
) && fc_frame_payload_op(fp
) == ELS_LOGO
&&
1759 ntoh24(fh
->fh_s_id
) == FC_FID_FLOGI
) {
1760 FCOE_DBG("fcoe: dropping FCoE lport LOGO in fip mode\n");
1764 if (!(fr_flags(fp
) & FCPHF_CRC_UNCHECKED
) ||
1765 le32_to_cpu(fr_crc(fp
)) == ~crc32(~0, skb
->data
, skb
->len
)) {
1766 fr_flags(fp
) &= ~FCPHF_CRC_UNCHECKED
;
1770 stats
= per_cpu_ptr(lport
->stats
, get_cpu());
1771 stats
->InvalidCRCCount
++;
1772 if (stats
->InvalidCRCCount
< 5)
1773 printk(KERN_WARNING
"fcoe: dropping frame with CRC error\n");
1779 * fcoe_recv_frame() - process a single received frame
1780 * @skb: frame to process
1782 static void fcoe_recv_frame(struct sk_buff
*skb
)
1785 struct fc_lport
*lport
;
1786 struct fcoe_rcv_info
*fr
;
1787 struct fc_stats
*stats
;
1788 struct fcoe_crc_eof crc_eof
;
1789 struct fc_frame
*fp
;
1790 struct fcoe_port
*port
;
1791 struct fcoe_hdr
*hp
;
1793 fr
= fcoe_dev_from_skb(skb
);
1795 if (unlikely(!lport
)) {
1796 if (skb
->destructor
!= fcoe_percpu_flush_done
)
1797 FCOE_NETDEV_DBG(skb
->dev
, "NULL lport in skb\n");
1802 FCOE_NETDEV_DBG(skb
->dev
,
1803 "skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n",
1804 skb
->len
, skb
->data_len
,
1805 skb
->head
, skb
->data
, skb_tail_pointer(skb
),
1806 skb_end_pointer(skb
), skb
->csum
,
1807 skb
->dev
? skb
->dev
->name
: "<NULL>");
1809 port
= lport_priv(lport
);
1810 skb_linearize(skb
); /* check for skb_is_nonlinear is within skb_linearize */
1813 * Frame length checks and setting up the header pointers
1814 * was done in fcoe_rcv already.
1816 hp
= (struct fcoe_hdr
*) skb_network_header(skb
);
1818 stats
= per_cpu_ptr(lport
->stats
, get_cpu());
1819 if (unlikely(FC_FCOE_DECAPS_VER(hp
) != FC_FCOE_VER
)) {
1820 if (stats
->ErrorFrames
< 5)
1821 printk(KERN_WARNING
"fcoe: FCoE version "
1822 "mismatch: The frame has "
1823 "version %x, but the "
1824 "initiator supports version "
1825 "%x\n", FC_FCOE_DECAPS_VER(hp
),
1830 skb_pull(skb
, sizeof(struct fcoe_hdr
));
1831 fr_len
= skb
->len
- sizeof(struct fcoe_crc_eof
);
1834 stats
->RxWords
+= fr_len
/ FCOE_WORD_TO_BYTE
;
1836 fp
= (struct fc_frame
*)skb
;
1839 fr_sof(fp
) = hp
->fcoe_sof
;
1841 /* Copy out the CRC and EOF trailer for access */
1842 if (skb_copy_bits(skb
, fr_len
, &crc_eof
, sizeof(crc_eof
)))
1844 fr_eof(fp
) = crc_eof
.fcoe_eof
;
1845 fr_crc(fp
) = crc_eof
.fcoe_crc32
;
1846 if (pskb_trim(skb
, fr_len
))
1849 if (!fcoe_filter_frames(lport
, fp
)) {
1851 fc_exch_recv(lport
, fp
);
1855 stats
->ErrorFrames
++;
1861 * fcoe_percpu_receive_thread() - The per-CPU packet receive thread
1862 * @arg: The per-CPU context
1864 * Return: 0 for success
1866 static int fcoe_percpu_receive_thread(void *arg
)
1868 struct fcoe_percpu_s
*p
= arg
;
1869 struct sk_buff
*skb
;
1870 struct sk_buff_head tmp
;
1872 skb_queue_head_init(&tmp
);
1874 set_user_nice(current
, MIN_NICE
);
1877 while (!kthread_should_stop()) {
1879 spin_lock_bh(&p
->fcoe_rx_list
.lock
);
1880 skb_queue_splice_init(&p
->fcoe_rx_list
, &tmp
);
1882 if (!skb_queue_len(&tmp
)) {
1883 set_current_state(TASK_INTERRUPTIBLE
);
1884 spin_unlock_bh(&p
->fcoe_rx_list
.lock
);
1889 spin_unlock_bh(&p
->fcoe_rx_list
.lock
);
1891 while ((skb
= __skb_dequeue(&tmp
)) != NULL
)
1892 fcoe_recv_frame(skb
);
1899 * fcoe_dev_setup() - Setup the link change notification interface
1901 static void fcoe_dev_setup(void)
1903 register_dcbevent_notifier(&dcb_notifier
);
1904 register_netdevice_notifier(&fcoe_notifier
);
1908 * fcoe_dev_cleanup() - Cleanup the link change notification interface
1910 static void fcoe_dev_cleanup(void)
1912 unregister_dcbevent_notifier(&dcb_notifier
);
1913 unregister_netdevice_notifier(&fcoe_notifier
);
1916 static struct fcoe_interface
*
1917 fcoe_hostlist_lookup_realdev_port(struct net_device
*netdev
)
1919 struct fcoe_interface
*fcoe
;
1920 struct net_device
*real_dev
;
1922 list_for_each_entry(fcoe
, &fcoe_hostlist
, list
) {
1923 if (fcoe
->netdev
->priv_flags
& IFF_802_1Q_VLAN
)
1924 real_dev
= vlan_dev_real_dev(fcoe
->netdev
);
1926 real_dev
= fcoe
->netdev
;
1928 if (netdev
== real_dev
)
1934 static int fcoe_dcb_app_notification(struct notifier_block
*notifier
,
1935 ulong event
, void *ptr
)
1937 struct dcb_app_type
*entry
= ptr
;
1938 struct fcoe_ctlr
*ctlr
;
1939 struct fcoe_interface
*fcoe
;
1940 struct net_device
*netdev
;
1943 if (entry
->app
.selector
!= DCB_APP_IDTYPE_ETHTYPE
)
1946 netdev
= dev_get_by_index(&init_net
, entry
->ifindex
);
1950 fcoe
= fcoe_hostlist_lookup_realdev_port(netdev
);
1955 ctlr
= fcoe_to_ctlr(fcoe
);
1957 if (entry
->dcbx
& DCB_CAP_DCBX_VER_CEE
)
1958 prio
= ffs(entry
->app
.priority
) - 1;
1960 prio
= entry
->app
.priority
;
1965 if (entry
->app
.protocol
== ETH_P_FIP
||
1966 entry
->app
.protocol
== ETH_P_FCOE
)
1967 ctlr
->priority
= prio
;
1969 if (entry
->app
.protocol
== ETH_P_FCOE
)
1970 fcoe
->priority
= prio
;
1976 * fcoe_device_notification() - Handler for net device events
1977 * @notifier: The context of the notification
1978 * @event: The type of event
1979 * @ptr: The net device that the event was on
1981 * This function is called by the Ethernet driver in case of link change event.
1983 * Returns: 0 for success
1985 static int fcoe_device_notification(struct notifier_block
*notifier
,
1986 ulong event
, void *ptr
)
1988 struct fcoe_ctlr_device
*cdev
;
1989 struct fc_lport
*lport
= NULL
;
1990 struct net_device
*netdev
= netdev_notifier_info_to_dev(ptr
);
1991 struct fcoe_ctlr
*ctlr
;
1992 struct fcoe_interface
*fcoe
;
1993 struct fcoe_port
*port
;
1994 struct fc_stats
*stats
;
1995 u32 link_possible
= 1;
1999 list_for_each_entry(fcoe
, &fcoe_hostlist
, list
) {
2000 if (fcoe
->netdev
== netdev
) {
2001 ctlr
= fcoe_to_ctlr(fcoe
);
2013 case NETDEV_GOING_DOWN
:
2019 case NETDEV_CHANGEMTU
:
2020 if (netdev
->features
& NETIF_F_FCOE_MTU
)
2022 mfs
= netdev
->mtu
- (sizeof(struct fcoe_hdr
) +
2023 sizeof(struct fcoe_crc_eof
));
2024 if (mfs
>= FC_MIN_MAX_FRAME
)
2025 fc_set_mfs(lport
, mfs
);
2027 case NETDEV_REGISTER
:
2029 case NETDEV_UNREGISTER
:
2030 list_del(&fcoe
->list
);
2031 port
= lport_priv(ctlr
->lp
);
2032 queue_work(fcoe_wq
, &port
->destroy_work
);
2035 case NETDEV_FEAT_CHANGE
:
2036 fcoe_netdev_features_change(lport
, netdev
);
2039 FCOE_NETDEV_DBG(netdev
, "Unknown event %ld "
2040 "from netdev netlink\n", event
);
2043 fcoe_link_speed_update(lport
);
2045 cdev
= fcoe_ctlr_to_ctlr_dev(ctlr
);
2047 if (link_possible
&& !fcoe_link_ok(lport
)) {
2048 switch (cdev
->enabled
) {
2049 case FCOE_CTLR_DISABLED
:
2050 pr_info("Link up while interface is disabled.\n");
2052 case FCOE_CTLR_ENABLED
:
2053 case FCOE_CTLR_UNUSED
:
2054 fcoe_ctlr_link_up(ctlr
);
2056 } else if (fcoe_ctlr_link_down(ctlr
)) {
2057 switch (cdev
->enabled
) {
2058 case FCOE_CTLR_DISABLED
:
2059 pr_info("Link down while interface is disabled.\n");
2061 case FCOE_CTLR_ENABLED
:
2062 case FCOE_CTLR_UNUSED
:
2063 stats
= per_cpu_ptr(lport
->stats
, get_cpu());
2064 stats
->LinkFailureCount
++;
2066 fcoe_clean_pending_queue(lport
);
2074 * fcoe_disable() - Disables a FCoE interface
2075 * @netdev : The net_device object the Ethernet interface to create on
2077 * Called from fcoe transport.
2079 * Returns: 0 for success
2081 * Deprecated: use fcoe_ctlr_enabled()
2083 static int fcoe_disable(struct net_device
*netdev
)
2085 struct fcoe_ctlr
*ctlr
;
2086 struct fcoe_interface
*fcoe
;
2089 mutex_lock(&fcoe_config_mutex
);
2092 fcoe
= fcoe_hostlist_lookup_port(netdev
);
2096 ctlr
= fcoe_to_ctlr(fcoe
);
2097 fcoe_ctlr_link_down(ctlr
);
2098 fcoe_clean_pending_queue(ctlr
->lp
);
2102 mutex_unlock(&fcoe_config_mutex
);
2107 * fcoe_enable() - Enables a FCoE interface
2108 * @netdev : The net_device object the Ethernet interface to create on
2110 * Called from fcoe transport.
2112 * Returns: 0 for success
2114 static int fcoe_enable(struct net_device
*netdev
)
2116 struct fcoe_ctlr
*ctlr
;
2117 struct fcoe_interface
*fcoe
;
2120 mutex_lock(&fcoe_config_mutex
);
2122 fcoe
= fcoe_hostlist_lookup_port(netdev
);
2130 ctlr
= fcoe_to_ctlr(fcoe
);
2132 if (!fcoe_link_ok(ctlr
->lp
))
2133 fcoe_ctlr_link_up(ctlr
);
2136 mutex_unlock(&fcoe_config_mutex
);
2141 * fcoe_ctlr_enabled() - Enable or disable an FCoE Controller
2142 * @cdev: The FCoE Controller that is being enabled or disabled
2144 * fcoe_sysfs will ensure that the state of 'enabled' has
2145 * changed, so no checking is necessary here. This routine simply
2146 * calls fcoe_enable or fcoe_disable, both of which are deprecated.
2147 * When those routines are removed the functionality can be merged
2150 static int fcoe_ctlr_enabled(struct fcoe_ctlr_device
*cdev
)
2152 struct fcoe_ctlr
*ctlr
= fcoe_ctlr_device_priv(cdev
);
2153 struct fc_lport
*lport
= ctlr
->lp
;
2154 struct net_device
*netdev
= fcoe_netdev(lport
);
2156 switch (cdev
->enabled
) {
2157 case FCOE_CTLR_ENABLED
:
2158 return fcoe_enable(netdev
);
2159 case FCOE_CTLR_DISABLED
:
2160 return fcoe_disable(netdev
);
2161 case FCOE_CTLR_UNUSED
:
2168 * fcoe_destroy() - Destroy a FCoE interface
2169 * @netdev : The net_device object the Ethernet interface to create on
2171 * Called from fcoe transport
2173 * Returns: 0 for success
2175 static int fcoe_destroy(struct net_device
*netdev
)
2177 struct fcoe_ctlr
*ctlr
;
2178 struct fcoe_interface
*fcoe
;
2179 struct fc_lport
*lport
;
2180 struct fcoe_port
*port
;
2183 mutex_lock(&fcoe_config_mutex
);
2185 fcoe
= fcoe_hostlist_lookup_port(netdev
);
2190 ctlr
= fcoe_to_ctlr(fcoe
);
2192 port
= lport_priv(lport
);
2193 list_del(&fcoe
->list
);
2194 queue_work(fcoe_wq
, &port
->destroy_work
);
2197 mutex_unlock(&fcoe_config_mutex
);
2202 * fcoe_destroy_work() - Destroy a FCoE port in a deferred work context
2203 * @work: Handle to the FCoE port to be destroyed
2205 static void fcoe_destroy_work(struct work_struct
*work
)
2207 struct fcoe_ctlr_device
*cdev
;
2208 struct fcoe_ctlr
*ctlr
;
2209 struct fcoe_port
*port
;
2210 struct fcoe_interface
*fcoe
;
2211 struct Scsi_Host
*shost
;
2212 struct fc_host_attrs
*fc_host
;
2213 unsigned long flags
;
2214 struct fc_vport
*vport
;
2215 struct fc_vport
*next_vport
;
2217 port
= container_of(work
, struct fcoe_port
, destroy_work
);
2218 shost
= port
->lport
->host
;
2219 fc_host
= shost_to_fc_host(shost
);
2221 /* Loop through all the vports and mark them for deletion */
2222 spin_lock_irqsave(shost
->host_lock
, flags
);
2223 list_for_each_entry_safe(vport
, next_vport
, &fc_host
->vports
, peers
) {
2224 if (vport
->flags
& (FC_VPORT_DEL
| FC_VPORT_CREATING
)) {
2227 vport
->flags
|= FC_VPORT_DELETING
;
2228 queue_work(fc_host_work_q(shost
),
2229 &vport
->vport_delete_work
);
2232 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2234 flush_workqueue(fc_host_work_q(shost
));
2236 mutex_lock(&fcoe_config_mutex
);
2239 ctlr
= fcoe_to_ctlr(fcoe
);
2240 cdev
= fcoe_ctlr_to_ctlr_dev(ctlr
);
2242 fcoe_if_destroy(port
->lport
);
2243 fcoe_interface_cleanup(fcoe
);
2245 mutex_unlock(&fcoe_config_mutex
);
2247 fcoe_ctlr_device_delete(cdev
);
2251 * fcoe_match() - Check if the FCoE is supported on the given netdevice
2252 * @netdev : The net_device object the Ethernet interface to create on
2254 * Called from fcoe transport.
2256 * Returns: always returns true as this is the default FCoE transport,
2257 * i.e., support all netdevs.
2259 static bool fcoe_match(struct net_device
*netdev
)
2265 * fcoe_dcb_create() - Initialize DCB attributes and hooks
2266 * @netdev: The net_device object of the L2 link that should be queried
2267 * @port: The fcoe_port to bind FCoE APP priority with
2270 static void fcoe_dcb_create(struct fcoe_interface
*fcoe
)
2275 struct net_device
*netdev
= fcoe
->realdev
;
2276 struct fcoe_ctlr
*ctlr
= fcoe_to_ctlr(fcoe
);
2277 struct dcb_app app
= {
2279 .protocol
= ETH_P_FCOE
2282 /* setup DCB priority attributes. */
2283 if (netdev
&& netdev
->dcbnl_ops
&& netdev
->dcbnl_ops
->getdcbx
) {
2284 dcbx
= netdev
->dcbnl_ops
->getdcbx(netdev
);
2286 if (dcbx
& DCB_CAP_DCBX_VER_IEEE
) {
2287 app
.selector
= IEEE_8021QAZ_APP_SEL_ETHERTYPE
;
2288 up
= dcb_ieee_getapp_mask(netdev
, &app
);
2289 app
.protocol
= ETH_P_FIP
;
2290 fup
= dcb_ieee_getapp_mask(netdev
, &app
);
2292 app
.selector
= DCB_APP_IDTYPE_ETHTYPE
;
2293 up
= dcb_getapp(netdev
, &app
);
2294 app
.protocol
= ETH_P_FIP
;
2295 fup
= dcb_getapp(netdev
, &app
);
2298 fcoe
->priority
= ffs(up
) ? ffs(up
) - 1 : 0;
2299 ctlr
->priority
= ffs(fup
) ? ffs(fup
) - 1 : fcoe
->priority
;
2304 enum fcoe_create_link_state
{
2305 FCOE_CREATE_LINK_DOWN
,
2306 FCOE_CREATE_LINK_UP
,
2310 * _fcoe_create() - (internal) Create a fcoe interface
2311 * @netdev : The net_device object the Ethernet interface to create on
2312 * @fip_mode: The FIP mode for this creation
2313 * @link_state: The ctlr link state on creation
2315 * Called from either the libfcoe 'create' module parameter
2316 * via fcoe_create or from fcoe_syfs's ctlr_create file.
2318 * libfcoe's 'create' module parameter is deprecated so some
2319 * consolidation of code can be done when that interface is
2322 static int _fcoe_create(struct net_device
*netdev
, enum fip_state fip_mode
,
2323 enum fcoe_create_link_state link_state
)
2326 struct fcoe_ctlr_device
*ctlr_dev
;
2327 struct fcoe_ctlr
*ctlr
;
2328 struct fcoe_interface
*fcoe
;
2329 struct fc_lport
*lport
;
2331 mutex_lock(&fcoe_config_mutex
);
2334 /* look for existing lport */
2335 if (fcoe_hostlist_lookup(netdev
)) {
2340 fcoe
= fcoe_interface_create(netdev
, fip_mode
);
2346 ctlr
= fcoe_to_ctlr(fcoe
);
2347 ctlr_dev
= fcoe_ctlr_to_ctlr_dev(ctlr
);
2348 lport
= fcoe_if_create(fcoe
, &ctlr_dev
->dev
, 0);
2349 if (IS_ERR(lport
)) {
2350 printk(KERN_ERR
"fcoe: Failed to create interface (%s)\n",
2354 fcoe_interface_cleanup(fcoe
);
2355 mutex_unlock(&fcoe_config_mutex
);
2356 fcoe_ctlr_device_delete(ctlr_dev
);
2360 /* Make this the "master" N_Port */
2363 /* setup DCB priority attributes. */
2364 fcoe_dcb_create(fcoe
);
2366 /* start FIP Discovery and FLOGI */
2367 lport
->boot_time
= jiffies
;
2368 fc_fabric_login(lport
);
2371 * If the fcoe_ctlr_device is to be set to DISABLED
2372 * it must be done after the lport is added to the
2373 * hostlist, but before the rtnl_lock is released.
2374 * This is because the rtnl_lock protects the
2375 * hostlist that fcoe_device_notification uses. If
2376 * the FCoE Controller is intended to be created
2377 * DISABLED then 'enabled' needs to be considered
2378 * handling link events. 'enabled' must be set
2379 * before the lport can be found in the hostlist
2380 * when a link up event is received.
2382 if (link_state
== FCOE_CREATE_LINK_UP
)
2383 ctlr_dev
->enabled
= FCOE_CTLR_ENABLED
;
2385 ctlr_dev
->enabled
= FCOE_CTLR_DISABLED
;
2387 if (link_state
== FCOE_CREATE_LINK_UP
&&
2388 !fcoe_link_ok(lport
)) {
2390 fcoe_ctlr_link_up(ctlr
);
2391 mutex_unlock(&fcoe_config_mutex
);
2397 mutex_unlock(&fcoe_config_mutex
);
2403 * fcoe_create() - Create a fcoe interface
2404 * @netdev : The net_device object the Ethernet interface to create on
2405 * @fip_mode: The FIP mode for this creation
2407 * Called from fcoe transport
2409 * Returns: 0 for success
2411 static int fcoe_create(struct net_device
*netdev
, enum fip_state fip_mode
)
2413 return _fcoe_create(netdev
, fip_mode
, FCOE_CREATE_LINK_UP
);
2417 * fcoe_ctlr_alloc() - Allocate a fcoe interface from fcoe_sysfs
2418 * @netdev: The net_device to be used by the allocated FCoE Controller
2420 * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
2421 * in a link_down state. The allows the user an opportunity to configure
2422 * the FCoE Controller from sysfs before enabling the FCoE Controller.
2424 * Creating in with this routine starts the FCoE Controller in Fabric
2425 * mode. The user can change to VN2VN or another mode before enabling.
2427 static int fcoe_ctlr_alloc(struct net_device
*netdev
)
2429 return _fcoe_create(netdev
, FIP_MODE_FABRIC
,
2430 FCOE_CREATE_LINK_DOWN
);
2434 * fcoe_link_ok() - Check if the link is OK for a local port
2435 * @lport: The local port to check link on
2437 * Returns: 0 if link is UP and OK, -1 if not
2440 static int fcoe_link_ok(struct fc_lport
*lport
)
2442 struct net_device
*netdev
= fcoe_netdev(lport
);
2444 if (netif_oper_up(netdev
))
2450 * fcoe_percpu_clean() - Clear all pending skbs for an local port
2451 * @lport: The local port whose skbs are to be cleared
2453 * Must be called with fcoe_create_mutex held to single-thread completion.
2455 * This flushes the pending skbs by adding a new skb to each queue and
2456 * waiting until they are all freed. This assures us that not only are
2457 * there no packets that will be handled by the lport, but also that any
2458 * threads already handling packet have returned.
2460 static void fcoe_percpu_clean(struct fc_lport
*lport
)
2462 struct fcoe_percpu_s
*pp
;
2463 struct sk_buff
*skb
;
2466 for_each_possible_cpu(cpu
) {
2467 pp
= &per_cpu(fcoe_percpu
, cpu
);
2469 if (!pp
->thread
|| !cpu_online(cpu
))
2472 skb
= dev_alloc_skb(0);
2476 skb
->destructor
= fcoe_percpu_flush_done
;
2478 spin_lock_bh(&pp
->fcoe_rx_list
.lock
);
2479 __skb_queue_tail(&pp
->fcoe_rx_list
, skb
);
2480 if (pp
->fcoe_rx_list
.qlen
== 1)
2481 wake_up_process(pp
->thread
);
2482 spin_unlock_bh(&pp
->fcoe_rx_list
.lock
);
2484 wait_for_completion(&fcoe_flush_completion
);
2489 * fcoe_reset() - Reset a local port
2490 * @shost: The SCSI host associated with the local port to be reset
2492 * Returns: Always 0 (return value required by FC transport template)
2494 static int fcoe_reset(struct Scsi_Host
*shost
)
2496 struct fc_lport
*lport
= shost_priv(shost
);
2497 struct fcoe_port
*port
= lport_priv(lport
);
2498 struct fcoe_interface
*fcoe
= port
->priv
;
2499 struct fcoe_ctlr
*ctlr
= fcoe_to_ctlr(fcoe
);
2500 struct fcoe_ctlr_device
*cdev
= fcoe_ctlr_to_ctlr_dev(ctlr
);
2502 fcoe_ctlr_link_down(ctlr
);
2503 fcoe_clean_pending_queue(ctlr
->lp
);
2505 if (cdev
->enabled
!= FCOE_CTLR_DISABLED
&&
2506 !fcoe_link_ok(ctlr
->lp
))
2507 fcoe_ctlr_link_up(ctlr
);
2512 * fcoe_hostlist_lookup_port() - Find the FCoE interface associated with a net device
2513 * @netdev: The net device used as a key
2515 * Locking: Must be called with the RNL mutex held.
2517 * Returns: NULL or the FCoE interface
2519 static struct fcoe_interface
*
2520 fcoe_hostlist_lookup_port(const struct net_device
*netdev
)
2522 struct fcoe_interface
*fcoe
;
2524 list_for_each_entry(fcoe
, &fcoe_hostlist
, list
) {
2525 if (fcoe
->netdev
== netdev
)
2532 * fcoe_hostlist_lookup() - Find the local port associated with a
2534 * @netdev: The netdevice used as a key
2536 * Locking: Must be called with the RTNL mutex held
2538 * Returns: NULL or the local port
2540 static struct fc_lport
*fcoe_hostlist_lookup(const struct net_device
*netdev
)
2542 struct fcoe_ctlr
*ctlr
;
2543 struct fcoe_interface
*fcoe
;
2545 fcoe
= fcoe_hostlist_lookup_port(netdev
);
2546 ctlr
= fcoe_to_ctlr(fcoe
);
2547 return (fcoe
) ? ctlr
->lp
: NULL
;
2551 * fcoe_hostlist_add() - Add the FCoE interface identified by a local
2552 * port to the hostlist
2553 * @lport: The local port that identifies the FCoE interface to be added
2555 * Locking: must be called with the RTNL mutex held
2557 * Returns: 0 for success
2559 static int fcoe_hostlist_add(const struct fc_lport
*lport
)
2561 struct fcoe_interface
*fcoe
;
2562 struct fcoe_port
*port
;
2564 fcoe
= fcoe_hostlist_lookup_port(fcoe_netdev(lport
));
2566 port
= lport_priv(lport
);
2568 list_add_tail(&fcoe
->list
, &fcoe_hostlist
);
2574 * fcoe_hostlist_del() - Remove the FCoE interface identified by a local
2575 * port to the hostlist
2576 * @lport: The local port that identifies the FCoE interface to be added
2578 * Locking: must be called with the RTNL mutex held
2581 static void fcoe_hostlist_del(const struct fc_lport
*lport
)
2583 struct fcoe_interface
*fcoe
;
2584 struct fcoe_port
*port
;
2586 port
= lport_priv(lport
);
2588 list_del(&fcoe
->list
);
2592 static struct fcoe_transport fcoe_sw_transport
= {
2593 .name
= {FCOE_TRANSPORT_DEFAULT
},
2595 .list
= LIST_HEAD_INIT(fcoe_sw_transport
.list
),
2596 .match
= fcoe_match
,
2597 .alloc
= fcoe_ctlr_alloc
,
2598 .create
= fcoe_create
,
2599 .destroy
= fcoe_destroy
,
2600 .enable
= fcoe_enable
,
2601 .disable
= fcoe_disable
,
2605 * fcoe_init() - Initialize fcoe.ko
2607 * Returns: 0 on success, or a negative value on failure
2609 static int __init
fcoe_init(void)
2611 struct fcoe_percpu_s
*p
;
2615 fcoe_wq
= alloc_workqueue("fcoe", 0, 0);
2619 /* register as a fcoe transport */
2620 rc
= fcoe_transport_attach(&fcoe_sw_transport
);
2622 printk(KERN_ERR
"failed to register an fcoe transport, check "
2623 "if libfcoe is loaded\n");
2627 mutex_lock(&fcoe_config_mutex
);
2629 for_each_possible_cpu(cpu
) {
2630 p
= &per_cpu(fcoe_percpu
, cpu
);
2631 skb_queue_head_init(&p
->fcoe_rx_list
);
2634 cpu_notifier_register_begin();
2636 for_each_online_cpu(cpu
)
2637 fcoe_percpu_thread_create(cpu
);
2639 /* Initialize per CPU interrupt thread */
2640 rc
= __register_hotcpu_notifier(&fcoe_cpu_notifier
);
2644 cpu_notifier_register_done();
2646 /* Setup link change notification */
2649 rc
= fcoe_if_init();
2653 mutex_unlock(&fcoe_config_mutex
);
2657 for_each_online_cpu(cpu
) {
2658 fcoe_percpu_thread_destroy(cpu
);
2661 cpu_notifier_register_done();
2663 mutex_unlock(&fcoe_config_mutex
);
2664 destroy_workqueue(fcoe_wq
);
2667 module_init(fcoe_init
);
2670 * fcoe_exit() - Clean up fcoe.ko
2672 * Returns: 0 on success or a negative value on failure
2674 static void __exit
fcoe_exit(void)
2676 struct fcoe_interface
*fcoe
, *tmp
;
2677 struct fcoe_ctlr
*ctlr
;
2678 struct fcoe_port
*port
;
2681 mutex_lock(&fcoe_config_mutex
);
2685 /* releases the associated fcoe hosts */
2687 list_for_each_entry_safe(fcoe
, tmp
, &fcoe_hostlist
, list
) {
2688 ctlr
= fcoe_to_ctlr(fcoe
);
2689 port
= lport_priv(ctlr
->lp
);
2690 fcoe_hostlist_del(port
->lport
);
2691 queue_work(fcoe_wq
, &port
->destroy_work
);
2695 cpu_notifier_register_begin();
2697 for_each_online_cpu(cpu
)
2698 fcoe_percpu_thread_destroy(cpu
);
2700 __unregister_hotcpu_notifier(&fcoe_cpu_notifier
);
2702 cpu_notifier_register_done();
2704 mutex_unlock(&fcoe_config_mutex
);
2707 * destroy_work's may be chained but destroy_workqueue()
2708 * can take care of them. Just kill the fcoe_wq.
2710 destroy_workqueue(fcoe_wq
);
2713 * Detaching from the scsi transport must happen after all
2714 * destroys are done on the fcoe_wq. destroy_workqueue will
2715 * enusre the fcoe_wq is flushed.
2719 /* detach from fcoe transport */
2720 fcoe_transport_detach(&fcoe_sw_transport
);
2722 module_exit(fcoe_exit
);
2725 * fcoe_flogi_resp() - FCoE specific FLOGI and FDISC response handler
2726 * @seq: active sequence in the FLOGI or FDISC exchange
2727 * @fp: response frame, or error encoded in a pointer (timeout)
2728 * @arg: pointer the the fcoe_ctlr structure
2730 * This handles MAC address management for FCoE, then passes control on to
2731 * the libfc FLOGI response handler.
2733 static void fcoe_flogi_resp(struct fc_seq
*seq
, struct fc_frame
*fp
, void *arg
)
2735 struct fcoe_ctlr
*fip
= arg
;
2736 struct fc_exch
*exch
= fc_seq_exch(seq
);
2737 struct fc_lport
*lport
= exch
->lp
;
2743 mac
= fr_cb(fp
)->granted_mac
;
2745 if (is_zero_ether_addr(mac
))
2746 fcoe_ctlr_recv_flogi(fip
, lport
, fp
);
2747 if (!is_zero_ether_addr(mac
))
2748 fcoe_update_src_mac(lport
, mac
);
2750 fc_lport_flogi_resp(seq
, fp
, lport
);
2754 * fcoe_logo_resp() - FCoE specific LOGO response handler
2755 * @seq: active sequence in the LOGO exchange
2756 * @fp: response frame, or error encoded in a pointer (timeout)
2757 * @arg: pointer the the fcoe_ctlr structure
2759 * This handles MAC address management for FCoE, then passes control on to
2760 * the libfc LOGO response handler.
2762 static void fcoe_logo_resp(struct fc_seq
*seq
, struct fc_frame
*fp
, void *arg
)
2764 struct fc_lport
*lport
= arg
;
2765 static u8 zero_mac
[ETH_ALEN
] = { 0 };
2768 fcoe_update_src_mac(lport
, zero_mac
);
2769 fc_lport_logo_resp(seq
, fp
, lport
);
2773 * fcoe_elsct_send - FCoE specific ELS handler
2775 * This does special case handling of FIP encapsualted ELS exchanges for FCoE,
2776 * using FCoE specific response handlers and passing the FIP controller as
2777 * the argument (the lport is still available from the exchange).
2779 * Most of the work here is just handed off to the libfc routine.
2781 static struct fc_seq
*fcoe_elsct_send(struct fc_lport
*lport
, u32 did
,
2782 struct fc_frame
*fp
, unsigned int op
,
2783 void (*resp
)(struct fc_seq
*,
2786 void *arg
, u32 timeout
)
2788 struct fcoe_port
*port
= lport_priv(lport
);
2789 struct fcoe_interface
*fcoe
= port
->priv
;
2790 struct fcoe_ctlr
*fip
= fcoe_to_ctlr(fcoe
);
2791 struct fc_frame_header
*fh
= fc_frame_header_get(fp
);
2796 if (lport
->point_to_multipoint
)
2798 return fc_elsct_send(lport
, did
, fp
, op
, fcoe_flogi_resp
,
2801 /* only hook onto fabric logouts, not port logouts */
2802 if (ntoh24(fh
->fh_d_id
) != FC_FID_FLOGI
)
2804 return fc_elsct_send(lport
, did
, fp
, op
, fcoe_logo_resp
,
2807 return fc_elsct_send(lport
, did
, fp
, op
, resp
, arg
, timeout
);
2811 * fcoe_vport_create() - create an fc_host/scsi_host for a vport
2812 * @vport: fc_vport object to create a new fc_host for
2813 * @disabled: start the new fc_host in a disabled state by default?
2815 * Returns: 0 for success
2817 static int fcoe_vport_create(struct fc_vport
*vport
, bool disabled
)
2819 struct Scsi_Host
*shost
= vport_to_shost(vport
);
2820 struct fc_lport
*n_port
= shost_priv(shost
);
2821 struct fcoe_port
*port
= lport_priv(n_port
);
2822 struct fcoe_interface
*fcoe
= port
->priv
;
2823 struct net_device
*netdev
= fcoe
->netdev
;
2824 struct fc_lport
*vn_port
;
2828 rc
= fcoe_validate_vport_create(vport
);
2830 fcoe_wwn_to_str(vport
->port_name
, buf
, sizeof(buf
));
2831 printk(KERN_ERR
"fcoe: Failed to create vport, "
2832 "WWPN (0x%s) already exists\n",
2837 mutex_lock(&fcoe_config_mutex
);
2839 vn_port
= fcoe_if_create(fcoe
, &vport
->dev
, 1);
2841 mutex_unlock(&fcoe_config_mutex
);
2843 if (IS_ERR(vn_port
)) {
2844 printk(KERN_ERR
"fcoe: fcoe_vport_create(%s) failed\n",
2850 fc_vport_set_state(vport
, FC_VPORT_DISABLED
);
2852 vn_port
->boot_time
= jiffies
;
2853 fc_fabric_login(vn_port
);
2854 fc_vport_setlink(vn_port
);
2860 * fcoe_vport_destroy() - destroy the fc_host/scsi_host for a vport
2861 * @vport: fc_vport object that is being destroyed
2863 * Returns: 0 for success
2865 static int fcoe_vport_destroy(struct fc_vport
*vport
)
2867 struct Scsi_Host
*shost
= vport_to_shost(vport
);
2868 struct fc_lport
*n_port
= shost_priv(shost
);
2869 struct fc_lport
*vn_port
= vport
->dd_data
;
2871 mutex_lock(&n_port
->lp_mutex
);
2872 list_del(&vn_port
->list
);
2873 mutex_unlock(&n_port
->lp_mutex
);
2875 mutex_lock(&fcoe_config_mutex
);
2876 fcoe_if_destroy(vn_port
);
2877 mutex_unlock(&fcoe_config_mutex
);
2883 * fcoe_vport_disable() - change vport state
2884 * @vport: vport to bring online/offline
2885 * @disable: should the vport be disabled?
2887 static int fcoe_vport_disable(struct fc_vport
*vport
, bool disable
)
2889 struct fc_lport
*lport
= vport
->dd_data
;
2892 fc_vport_set_state(vport
, FC_VPORT_DISABLED
);
2893 fc_fabric_logoff(lport
);
2895 lport
->boot_time
= jiffies
;
2896 fc_fabric_login(lport
);
2897 fc_vport_setlink(lport
);
2904 * fcoe_vport_set_symbolic_name() - append vport string to symbolic name
2905 * @vport: fc_vport with a new symbolic name string
2907 * After generating a new symbolic name string, a new RSPN_ID request is
2908 * sent to the name server. There is no response handler, so if it fails
2909 * for some reason it will not be retried.
2911 static void fcoe_set_vport_symbolic_name(struct fc_vport
*vport
)
2913 struct fc_lport
*lport
= vport
->dd_data
;
2914 struct fc_frame
*fp
;
2917 snprintf(fc_host_symbolic_name(lport
->host
), FC_SYMBOLIC_NAME_SIZE
,
2918 "%s v%s over %s : %s", FCOE_NAME
, FCOE_VERSION
,
2919 fcoe_netdev(lport
)->name
, vport
->symbolic_name
);
2921 if (lport
->state
!= LPORT_ST_READY
)
2924 len
= strnlen(fc_host_symbolic_name(lport
->host
), 255);
2925 fp
= fc_frame_alloc(lport
,
2926 sizeof(struct fc_ct_hdr
) +
2927 sizeof(struct fc_ns_rspn
) + len
);
2930 lport
->tt
.elsct_send(lport
, FC_FID_DIR_SERV
, fp
, FC_NS_RSPN_ID
,
2931 NULL
, NULL
, 3 * lport
->r_a_tov
);
2934 static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device
*fcf_dev
)
2936 struct fcoe_ctlr_device
*ctlr_dev
=
2937 fcoe_fcf_dev_to_ctlr_dev(fcf_dev
);
2938 struct fcoe_ctlr
*ctlr
= fcoe_ctlr_device_priv(ctlr_dev
);
2939 struct fcoe_interface
*fcoe
= fcoe_ctlr_priv(ctlr
);
2941 fcf_dev
->vlan_id
= vlan_dev_vlan_id(fcoe
->netdev
);
2945 * fcoe_set_port_id() - Callback from libfc when Port_ID is set.
2946 * @lport: the local port
2947 * @port_id: the port ID
2948 * @fp: the received frame, if any, that caused the port_id to be set.
2950 * This routine handles the case where we received a FLOGI and are
2951 * entering point-to-point mode. We need to call fcoe_ctlr_recv_flogi()
2952 * so it can set the non-mapped mode and gateway address.
2954 * The FLOGI LS_ACC is handled by fcoe_flogi_resp().
2956 static void fcoe_set_port_id(struct fc_lport
*lport
,
2957 u32 port_id
, struct fc_frame
*fp
)
2959 struct fcoe_port
*port
= lport_priv(lport
);
2960 struct fcoe_interface
*fcoe
= port
->priv
;
2961 struct fcoe_ctlr
*ctlr
= fcoe_to_ctlr(fcoe
);
2963 if (fp
&& fc_frame_payload_op(fp
) == ELS_FLOGI
)
2964 fcoe_ctlr_recv_flogi(ctlr
, lport
, fp
);