2 * Copyright(c) 2007 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
23 * These comments only apply to the 'port code' which consists of the lport,
24 * disc and rport blocks.
28 * The lport, disc and rport blocks all have mutexes that are used to protect
29 * those objects. The main motivation for these locks is to prevent from
30 * having an lport reset just before we send a frame. In that scenario the
31 * lport's FID would get set to zero and then we'd send a frame with an
32 * invalid SID. We also need to ensure that states don't change unexpectedly
33 * while processing another state.
37 * The following heirarchy defines the locking rules. A greater lock
38 * may be held before acquiring a lesser lock, but a lesser lock should never
39 * be held while attempting to acquire a greater lock. Here is the heirarchy-
41 * lport > disc, lport > rport, disc > rport
45 * The callbacks cause complications with this scheme. There is a callback
46 * from the rport (to either lport or disc) and a callback from disc
49 * As rports exit the rport state machine a callback is made to the owner of
50 * the rport to notify success or failure. Since the callback is likely to
51 * cause the lport or disc to grab its lock we cannot hold the rport lock
52 * while making the callback. To ensure that the rport is not free'd while
53 * processing the callback the rport callbacks are serialized through a
54 * single-threaded workqueue. An rport would never be free'd while in a
55 * callback handler becuase no other rport work in this queue can be executed
58 * When discovery succeeds or fails a callback is made to the lport as
59 * notification. Currently, succesful discovery causes the lport to take no
60 * action. A failure will cause the lport to reset. There is likely a circular
61 * locking problem with this implementation.
67 * The critical sections protected by the lport's mutex are quite broad and
68 * may be improved upon in the future. The lport code and its locking doesn't
69 * influence the I/O path, so excessive locking doesn't penalize I/O
72 * The strategy is to lock whenever processing a request or response. Note
73 * that every _enter_* function corresponds to a state change. They generally
74 * change the lports state and then send a request out on the wire. We lock
75 * before calling any of these functions to protect that state change. This
76 * means that the entry points into the lport block manage the locks while
77 * the state machine can transition between states (i.e. _enter_* functions)
78 * while always staying protected.
80 * When handling responses we also hold the lport mutex broadly. When the
81 * lport receives the response frame it locks the mutex and then calls the
82 * appropriate handler for the particuar response. Generally a response will
83 * trigger a state change and so the lock must already be held.
85 * Retries also have to consider the locking. The retries occur from a work
86 * context and the work function will lock the lport and then retry the state
87 * (i.e. _enter_* function).
90 #include <linux/timer.h>
91 #include <asm/unaligned.h>
93 #include <scsi/fc/fc_gs.h>
95 #include <scsi/libfc.h>
96 #include <scsi/fc_encode.h>
100 /* Fabric IDs to use for point-to-point mode, chosen on whims. */
101 #define FC_LOCAL_PTP_FID_LO 0x010101
102 #define FC_LOCAL_PTP_FID_HI 0x010102
104 #define DNS_DELAY 3 /* Discovery delay after RSCN (in seconds)*/
106 static void fc_lport_error(struct fc_lport
*, struct fc_frame
*);
108 static void fc_lport_enter_reset(struct fc_lport
*);
109 static void fc_lport_enter_flogi(struct fc_lport
*);
110 static void fc_lport_enter_dns(struct fc_lport
*);
111 static void fc_lport_enter_rpn_id(struct fc_lport
*);
112 static void fc_lport_enter_rft_id(struct fc_lport
*);
113 static void fc_lport_enter_scr(struct fc_lport
*);
114 static void fc_lport_enter_ready(struct fc_lport
*);
115 static void fc_lport_enter_logo(struct fc_lport
*);
117 static const char *fc_lport_state_names
[] = {
118 [LPORT_ST_DISABLED
] = "disabled",
119 [LPORT_ST_FLOGI
] = "FLOGI",
120 [LPORT_ST_DNS
] = "dNS",
121 [LPORT_ST_RPN_ID
] = "RPN_ID",
122 [LPORT_ST_RFT_ID
] = "RFT_ID",
123 [LPORT_ST_SCR
] = "SCR",
124 [LPORT_ST_READY
] = "Ready",
125 [LPORT_ST_LOGO
] = "LOGO",
126 [LPORT_ST_RESET
] = "reset",
129 static int fc_frame_drop(struct fc_lport
*lport
, struct fc_frame
*fp
)
136 * fc_lport_rport_callback() - Event handler for rport events
137 * @lport: The lport which is receiving the event
138 * @rdata: private remote port data
139 * @event: The event that occured
141 * Locking Note: The rport lock should not be held when calling
144 static void fc_lport_rport_callback(struct fc_lport
*lport
,
145 struct fc_rport_priv
*rdata
,
146 enum fc_rport_event event
)
148 FC_LPORT_DBG(lport
, "Received a %d event for port (%6x)\n", event
,
151 mutex_lock(&lport
->lp_mutex
);
154 if (lport
->state
== LPORT_ST_DNS
) {
155 lport
->dns_rp
= rdata
;
156 fc_lport_enter_rpn_id(lport
);
158 FC_LPORT_DBG(lport
, "Received an READY event "
159 "on port (%6x) for the directory "
160 "server, but the lport is not "
161 "in the DNS state, it's in the "
162 "%d state", rdata
->ids
.port_id
,
164 lport
->tt
.rport_logoff(rdata
);
168 case RPORT_EV_FAILED
:
170 lport
->dns_rp
= NULL
;
175 mutex_unlock(&lport
->lp_mutex
);
179 * fc_lport_state() - Return a string which represents the lport's state
180 * @lport: The lport whose state is to converted to a string
182 static const char *fc_lport_state(struct fc_lport
*lport
)
186 cp
= fc_lport_state_names
[lport
->state
];
193 * fc_lport_ptp_setup() - Create an rport for point-to-point mode
194 * @lport: The lport to attach the ptp rport to
195 * @fid: The FID of the ptp rport
196 * @remote_wwpn: The WWPN of the ptp rport
197 * @remote_wwnn: The WWNN of the ptp rport
199 static void fc_lport_ptp_setup(struct fc_lport
*lport
,
200 u32 remote_fid
, u64 remote_wwpn
,
203 mutex_lock(&lport
->disc
.disc_mutex
);
205 lport
->tt
.rport_logoff(lport
->ptp_rp
);
206 lport
->ptp_rp
= lport
->tt
.rport_create(lport
, remote_fid
);
207 lport
->ptp_rp
->ids
.port_name
= remote_wwpn
;
208 lport
->ptp_rp
->ids
.node_name
= remote_wwnn
;
209 mutex_unlock(&lport
->disc
.disc_mutex
);
211 lport
->tt
.rport_login(lport
->ptp_rp
);
213 fc_lport_enter_ready(lport
);
216 void fc_get_host_port_type(struct Scsi_Host
*shost
)
218 /* TODO - currently just NPORT */
219 fc_host_port_type(shost
) = FC_PORTTYPE_NPORT
;
221 EXPORT_SYMBOL(fc_get_host_port_type
);
223 void fc_get_host_port_state(struct Scsi_Host
*shost
)
225 struct fc_lport
*lp
= shost_priv(shost
);
227 mutex_lock(&lp
->lp_mutex
);
229 fc_host_port_state(shost
) = FC_PORTSTATE_LINKDOWN
;
233 fc_host_port_state(shost
) = FC_PORTSTATE_ONLINE
;
236 fc_host_port_state(shost
) = FC_PORTSTATE_OFFLINE
;
238 mutex_unlock(&lp
->lp_mutex
);
240 EXPORT_SYMBOL(fc_get_host_port_state
);
242 void fc_get_host_speed(struct Scsi_Host
*shost
)
244 struct fc_lport
*lport
= shost_priv(shost
);
246 fc_host_speed(shost
) = lport
->link_speed
;
248 EXPORT_SYMBOL(fc_get_host_speed
);
250 struct fc_host_statistics
*fc_get_host_stats(struct Scsi_Host
*shost
)
252 struct fc_host_statistics
*fcoe_stats
;
253 struct fc_lport
*lp
= shost_priv(shost
);
254 struct timespec v0
, v1
;
257 fcoe_stats
= &lp
->host_stats
;
258 memset(fcoe_stats
, 0, sizeof(struct fc_host_statistics
));
260 jiffies_to_timespec(jiffies
, &v0
);
261 jiffies_to_timespec(lp
->boot_time
, &v1
);
262 fcoe_stats
->seconds_since_last_reset
= (v0
.tv_sec
- v1
.tv_sec
);
264 for_each_possible_cpu(cpu
) {
265 struct fcoe_dev_stats
*stats
;
267 stats
= per_cpu_ptr(lp
->dev_stats
, cpu
);
269 fcoe_stats
->tx_frames
+= stats
->TxFrames
;
270 fcoe_stats
->tx_words
+= stats
->TxWords
;
271 fcoe_stats
->rx_frames
+= stats
->RxFrames
;
272 fcoe_stats
->rx_words
+= stats
->RxWords
;
273 fcoe_stats
->error_frames
+= stats
->ErrorFrames
;
274 fcoe_stats
->invalid_crc_count
+= stats
->InvalidCRCCount
;
275 fcoe_stats
->fcp_input_requests
+= stats
->InputRequests
;
276 fcoe_stats
->fcp_output_requests
+= stats
->OutputRequests
;
277 fcoe_stats
->fcp_control_requests
+= stats
->ControlRequests
;
278 fcoe_stats
->fcp_input_megabytes
+= stats
->InputMegabytes
;
279 fcoe_stats
->fcp_output_megabytes
+= stats
->OutputMegabytes
;
280 fcoe_stats
->link_failure_count
+= stats
->LinkFailureCount
;
282 fcoe_stats
->lip_count
= -1;
283 fcoe_stats
->nos_count
= -1;
284 fcoe_stats
->loss_of_sync_count
= -1;
285 fcoe_stats
->loss_of_signal_count
= -1;
286 fcoe_stats
->prim_seq_protocol_err_count
= -1;
287 fcoe_stats
->dumped_frames
= -1;
290 EXPORT_SYMBOL(fc_get_host_stats
);
293 * Fill in FLOGI command for request.
296 fc_lport_flogi_fill(struct fc_lport
*lport
, struct fc_els_flogi
*flogi
,
299 struct fc_els_csp
*sp
;
300 struct fc_els_cssp
*cp
;
302 memset(flogi
, 0, sizeof(*flogi
));
303 flogi
->fl_cmd
= (u8
) op
;
304 put_unaligned_be64(lport
->wwpn
, &flogi
->fl_wwpn
);
305 put_unaligned_be64(lport
->wwnn
, &flogi
->fl_wwnn
);
307 sp
->sp_hi_ver
= 0x20;
308 sp
->sp_lo_ver
= 0x20;
309 sp
->sp_bb_cred
= htons(10); /* this gets set by gateway */
310 sp
->sp_bb_data
= htons((u16
) lport
->mfs
);
311 cp
= &flogi
->fl_cssp
[3 - 1]; /* class 3 parameters */
312 cp
->cp_class
= htons(FC_CPC_VALID
| FC_CPC_SEQ
);
313 if (op
!= ELS_FLOGI
) {
314 sp
->sp_features
= htons(FC_SP_FT_CIRO
);
315 sp
->sp_tot_seq
= htons(255); /* seq. we accept */
316 sp
->sp_rel_off
= htons(0x1f);
317 sp
->sp_e_d_tov
= htonl(lport
->e_d_tov
);
319 cp
->cp_rdfs
= htons((u16
) lport
->mfs
);
320 cp
->cp_con_seq
= htons(255);
326 * Add a supported FC-4 type.
328 static void fc_lport_add_fc4_type(struct fc_lport
*lport
, enum fc_fh_type type
)
332 mp
= &lport
->fcts
.ff_type_map
[type
/ FC_NS_BPW
];
333 *mp
= htonl(ntohl(*mp
) | 1UL << (type
% FC_NS_BPW
));
337 * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report.
338 * @lport: Fibre Channel local port recieving the RLIR
339 * @sp: current sequence in the RLIR exchange
340 * @fp: RLIR request frame
342 * Locking Note: The lport lock is expected to be held before calling
345 static void fc_lport_recv_rlir_req(struct fc_seq
*sp
, struct fc_frame
*fp
,
346 struct fc_lport
*lport
)
348 FC_LPORT_DBG(lport
, "Received RLIR request while in state %s\n",
349 fc_lport_state(lport
));
351 lport
->tt
.seq_els_rsp_send(sp
, ELS_LS_ACC
, NULL
);
356 * fc_lport_recv_echo_req() - Handle received ECHO request
357 * @lport: Fibre Channel local port recieving the ECHO
358 * @sp: current sequence in the ECHO exchange
359 * @fp: ECHO request frame
361 * Locking Note: The lport lock is expected to be held before calling
364 static void fc_lport_recv_echo_req(struct fc_seq
*sp
, struct fc_frame
*in_fp
,
365 struct fc_lport
*lport
)
368 struct fc_exch
*ep
= fc_seq_exch(sp
);
374 FC_LPORT_DBG(lport
, "Received ECHO request while in state %s\n",
375 fc_lport_state(lport
));
377 len
= fr_len(in_fp
) - sizeof(struct fc_frame_header
);
378 pp
= fc_frame_payload_get(in_fp
, len
);
380 if (len
< sizeof(__be32
))
381 len
= sizeof(__be32
);
383 fp
= fc_frame_alloc(lport
, len
);
385 dp
= fc_frame_payload_get(fp
, len
);
387 *((__be32
*)dp
) = htonl(ELS_LS_ACC
<< 24);
388 sp
= lport
->tt
.seq_start_next(sp
);
389 f_ctl
= FC_FC_EX_CTX
| FC_FC_LAST_SEQ
| FC_FC_END_SEQ
;
390 fc_fill_fc_hdr(fp
, FC_RCTL_ELS_REP
, ep
->did
, ep
->sid
,
391 FC_TYPE_ELS
, f_ctl
, 0);
392 lport
->tt
.seq_send(lport
, sp
, fp
);
394 fc_frame_free(in_fp
);
398 * fc_lport_recv_rnid_req() - Handle received Request Node ID data request
399 * @sp: The sequence in the RNID exchange
400 * @fp: The RNID request frame
401 * @lport: The local port recieving the RNID
403 * Locking Note: The lport lock is expected to be held before calling
406 static void fc_lport_recv_rnid_req(struct fc_seq
*sp
, struct fc_frame
*in_fp
,
407 struct fc_lport
*lport
)
410 struct fc_exch
*ep
= fc_seq_exch(sp
);
411 struct fc_els_rnid
*req
;
413 struct fc_els_rnid_resp rnid
;
414 struct fc_els_rnid_cid cid
;
415 struct fc_els_rnid_gen gen
;
417 struct fc_seq_els_data rjt_data
;
422 FC_LPORT_DBG(lport
, "Received RNID request while in state %s\n",
423 fc_lport_state(lport
));
425 req
= fc_frame_payload_get(in_fp
, sizeof(*req
));
428 rjt_data
.reason
= ELS_RJT_LOGIC
;
429 rjt_data
.explan
= ELS_EXPL_NONE
;
430 lport
->tt
.seq_els_rsp_send(sp
, ELS_LS_RJT
, &rjt_data
);
434 if (fmt
!= ELS_RNIDF_GEN
||
435 ntohl(lport
->rnid_gen
.rnid_atype
) == 0) {
436 fmt
= ELS_RNIDF_NONE
; /* nothing to provide */
437 len
-= sizeof(rp
->gen
);
439 fp
= fc_frame_alloc(lport
, len
);
441 rp
= fc_frame_payload_get(fp
, len
);
443 rp
->rnid
.rnid_cmd
= ELS_LS_ACC
;
444 rp
->rnid
.rnid_fmt
= fmt
;
445 rp
->rnid
.rnid_cid_len
= sizeof(rp
->cid
);
446 rp
->cid
.rnid_wwpn
= htonll(lport
->wwpn
);
447 rp
->cid
.rnid_wwnn
= htonll(lport
->wwnn
);
448 if (fmt
== ELS_RNIDF_GEN
) {
449 rp
->rnid
.rnid_sid_len
= sizeof(rp
->gen
);
450 memcpy(&rp
->gen
, &lport
->rnid_gen
,
453 sp
= lport
->tt
.seq_start_next(sp
);
454 f_ctl
= FC_FC_EX_CTX
| FC_FC_LAST_SEQ
;
455 f_ctl
|= FC_FC_END_SEQ
| FC_FC_SEQ_INIT
;
456 fc_fill_fc_hdr(fp
, FC_RCTL_ELS_REP
, ep
->did
, ep
->sid
,
457 FC_TYPE_ELS
, f_ctl
, 0);
458 lport
->tt
.seq_send(lport
, sp
, fp
);
461 fc_frame_free(in_fp
);
465 * fc_lport_recv_logo_req() - Handle received fabric LOGO request
466 * @lport: Fibre Channel local port recieving the LOGO
467 * @sp: current sequence in the LOGO exchange
468 * @fp: LOGO request frame
470 * Locking Note: The lport lock is exected to be held before calling
473 static void fc_lport_recv_logo_req(struct fc_seq
*sp
, struct fc_frame
*fp
,
474 struct fc_lport
*lport
)
476 lport
->tt
.seq_els_rsp_send(sp
, ELS_LS_ACC
, NULL
);
477 fc_lport_enter_reset(lport
);
482 * fc_fabric_login() - Start the lport state machine
483 * @lport: The lport that should log into the fabric
485 * Locking Note: This function should not be called
486 * with the lport lock held.
488 int fc_fabric_login(struct fc_lport
*lport
)
492 mutex_lock(&lport
->lp_mutex
);
493 if (lport
->state
== LPORT_ST_DISABLED
) {
494 fc_lport_enter_reset(lport
);
497 mutex_unlock(&lport
->lp_mutex
);
501 EXPORT_SYMBOL(fc_fabric_login
);
504 * __fc_linkup() - Handler for transport linkup events
505 * @lport: The lport whose link is up
507 * Locking: must be called with the lp_mutex held
509 void __fc_linkup(struct fc_lport
*lport
)
511 if (!lport
->link_up
) {
514 if (lport
->state
== LPORT_ST_RESET
)
515 fc_lport_enter_flogi(lport
);
520 * fc_linkup() - Handler for transport linkup events
521 * @lport: The lport whose link is up
523 void fc_linkup(struct fc_lport
*lport
)
525 printk(KERN_INFO
"libfc: Link up on port (%6x)\n",
526 fc_host_port_id(lport
->host
));
528 mutex_lock(&lport
->lp_mutex
);
530 mutex_unlock(&lport
->lp_mutex
);
532 EXPORT_SYMBOL(fc_linkup
);
535 * __fc_linkdown() - Handler for transport linkdown events
536 * @lport: The lport whose link is down
538 * Locking: must be called with the lp_mutex held
540 void __fc_linkdown(struct fc_lport
*lport
)
542 if (lport
->link_up
) {
544 fc_lport_enter_reset(lport
);
545 lport
->tt
.fcp_cleanup(lport
);
550 * fc_linkdown() - Handler for transport linkdown events
551 * @lport: The lport whose link is down
553 void fc_linkdown(struct fc_lport
*lport
)
555 printk(KERN_INFO
"libfc: Link down on port (%6x)\n",
556 fc_host_port_id(lport
->host
));
558 mutex_lock(&lport
->lp_mutex
);
559 __fc_linkdown(lport
);
560 mutex_unlock(&lport
->lp_mutex
);
562 EXPORT_SYMBOL(fc_linkdown
);
565 * fc_fabric_logoff() - Logout of the fabric
566 * @lport: fc_lport pointer to logoff the fabric
569 * 0 for success, -1 for failure
571 int fc_fabric_logoff(struct fc_lport
*lport
)
573 lport
->tt
.disc_stop_final(lport
);
574 mutex_lock(&lport
->lp_mutex
);
576 lport
->tt
.rport_logoff(lport
->dns_rp
);
577 mutex_unlock(&lport
->lp_mutex
);
578 lport
->tt
.rport_flush_queue();
579 mutex_lock(&lport
->lp_mutex
);
580 fc_lport_enter_logo(lport
);
581 mutex_unlock(&lport
->lp_mutex
);
582 cancel_delayed_work_sync(&lport
->retry_work
);
585 EXPORT_SYMBOL(fc_fabric_logoff
);
588 * fc_lport_destroy() - unregister a fc_lport
589 * @lport: fc_lport pointer to unregister
594 * exit routine for fc_lport instance
595 * clean-up all the allocated memory
596 * and free up other system resources.
599 int fc_lport_destroy(struct fc_lport
*lport
)
601 mutex_lock(&lport
->lp_mutex
);
602 lport
->state
= LPORT_ST_DISABLED
;
604 lport
->tt
.frame_send
= fc_frame_drop
;
605 mutex_unlock(&lport
->lp_mutex
);
607 lport
->tt
.fcp_abort_io(lport
);
608 lport
->tt
.disc_stop_final(lport
);
609 lport
->tt
.exch_mgr_reset(lport
, 0, 0);
612 EXPORT_SYMBOL(fc_lport_destroy
);
615 * fc_set_mfs() - sets up the mfs for the corresponding fc_lport
616 * @lport: fc_lport pointer to unregister
617 * @mfs: the new mfs for fc_lport
619 * Set mfs for the given fc_lport to the new mfs.
621 * Return: 0 for success
623 int fc_set_mfs(struct fc_lport
*lport
, u32 mfs
)
625 unsigned int old_mfs
;
628 mutex_lock(&lport
->lp_mutex
);
630 old_mfs
= lport
->mfs
;
632 if (mfs
>= FC_MIN_MAX_FRAME
) {
634 if (mfs
> FC_MAX_FRAME
)
636 mfs
-= sizeof(struct fc_frame_header
);
641 if (!rc
&& mfs
< old_mfs
)
642 fc_lport_enter_reset(lport
);
644 mutex_unlock(&lport
->lp_mutex
);
648 EXPORT_SYMBOL(fc_set_mfs
);
651 * fc_lport_disc_callback() - Callback for discovery events
652 * @lport: FC local port
653 * @event: The discovery event
655 void fc_lport_disc_callback(struct fc_lport
*lport
, enum fc_disc_event event
)
658 case DISC_EV_SUCCESS
:
659 FC_LPORT_DBG(lport
, "Discovery succeeded\n");
662 printk(KERN_ERR
"libfc: Discovery failed for port (%6x)\n",
663 fc_host_port_id(lport
->host
));
664 mutex_lock(&lport
->lp_mutex
);
665 fc_lport_enter_reset(lport
);
666 mutex_unlock(&lport
->lp_mutex
);
675 * fc_rport_enter_ready() - Enter the ready state and start discovery
676 * @lport: Fibre Channel local port that is ready
678 * Locking Note: The lport lock is expected to be held before calling
681 static void fc_lport_enter_ready(struct fc_lport
*lport
)
683 FC_LPORT_DBG(lport
, "Entered READY from state %s\n",
684 fc_lport_state(lport
));
686 fc_lport_state_enter(lport
, LPORT_ST_READY
);
688 fc_vport_set_state(lport
->vport
, FC_VPORT_ACTIVE
);
689 fc_vports_linkchange(lport
);
692 lport
->tt
.disc_start(fc_lport_disc_callback
, lport
);
696 * fc_lport_recv_flogi_req() - Receive a FLOGI request
697 * @sp_in: The sequence the FLOGI is on
698 * @rx_fp: The frame the FLOGI is in
699 * @lport: The lport that recieved the request
701 * A received FLOGI request indicates a point-to-point connection.
702 * Accept it with the common service parameters indicating our N port.
703 * Set up to do a PLOGI if we have the higher-number WWPN.
705 * Locking Note: The lport lock is expected to be held before calling
708 static void fc_lport_recv_flogi_req(struct fc_seq
*sp_in
,
709 struct fc_frame
*rx_fp
,
710 struct fc_lport
*lport
)
713 struct fc_frame_header
*fh
;
716 struct fc_els_flogi
*flp
;
717 struct fc_els_flogi
*new_flp
;
723 FC_LPORT_DBG(lport
, "Received FLOGI request while in state %s\n",
724 fc_lport_state(lport
));
726 fh
= fc_frame_header_get(rx_fp
);
727 remote_fid
= ntoh24(fh
->fh_s_id
);
728 flp
= fc_frame_payload_get(rx_fp
, sizeof(*flp
));
731 remote_wwpn
= get_unaligned_be64(&flp
->fl_wwpn
);
732 if (remote_wwpn
== lport
->wwpn
) {
733 printk(KERN_WARNING
"libfc: Received FLOGI from port "
734 "with same WWPN %llx\n", remote_wwpn
);
737 FC_LPORT_DBG(lport
, "FLOGI from port WWPN %llx\n", remote_wwpn
);
740 * XXX what is the right thing to do for FIDs?
741 * The originator might expect our S_ID to be 0xfffffe.
742 * But if so, both of us could end up with the same FID.
744 local_fid
= FC_LOCAL_PTP_FID_LO
;
745 if (remote_wwpn
< lport
->wwpn
) {
746 local_fid
= FC_LOCAL_PTP_FID_HI
;
747 if (!remote_fid
|| remote_fid
== local_fid
)
748 remote_fid
= FC_LOCAL_PTP_FID_LO
;
749 } else if (!remote_fid
) {
750 remote_fid
= FC_LOCAL_PTP_FID_HI
;
753 fc_host_port_id(lport
->host
) = local_fid
;
755 fp
= fc_frame_alloc(lport
, sizeof(*flp
));
757 sp
= lport
->tt
.seq_start_next(fr_seq(rx_fp
));
758 new_flp
= fc_frame_payload_get(fp
, sizeof(*flp
));
759 fc_lport_flogi_fill(lport
, new_flp
, ELS_FLOGI
);
760 new_flp
->fl_cmd
= (u8
) ELS_LS_ACC
;
763 * Send the response. If this fails, the originator should
764 * repeat the sequence.
766 f_ctl
= FC_FC_EX_CTX
| FC_FC_LAST_SEQ
| FC_FC_END_SEQ
;
767 ep
= fc_seq_exch(sp
);
768 fc_fill_fc_hdr(fp
, FC_RCTL_ELS_REP
, ep
->did
, ep
->sid
,
769 FC_TYPE_ELS
, f_ctl
, 0);
770 lport
->tt
.seq_send(lport
, sp
, fp
);
773 fc_lport_error(lport
, fp
);
775 fc_lport_ptp_setup(lport
, remote_fid
, remote_wwpn
,
776 get_unaligned_be64(&flp
->fl_wwnn
));
780 fc_frame_free(rx_fp
);
784 * fc_lport_recv_req() - The generic lport request handler
785 * @lport: The lport that received the request
786 * @sp: The sequence the request is on
787 * @fp: The frame the request is in
789 * This function will see if the lport handles the request or
790 * if an rport should handle the request.
792 * Locking Note: This function should not be called with the lport
793 * lock held becuase it will grab the lock.
795 static void fc_lport_recv_req(struct fc_lport
*lport
, struct fc_seq
*sp
,
798 struct fc_frame_header
*fh
= fc_frame_header_get(fp
);
799 void (*recv
) (struct fc_seq
*, struct fc_frame
*, struct fc_lport
*);
801 mutex_lock(&lport
->lp_mutex
);
804 * Handle special ELS cases like FLOGI, LOGO, and
805 * RSCN here. These don't require a session.
806 * Even if we had a session, it might not be ready.
810 else if (fh
->fh_type
== FC_TYPE_ELS
&&
811 fh
->fh_r_ctl
== FC_RCTL_ELS_REQ
) {
815 recv
= lport
->tt
.rport_recv_req
;
816 switch (fc_frame_payload_op(fp
)) {
818 recv
= fc_lport_recv_flogi_req
;
821 fh
= fc_frame_header_get(fp
);
822 if (ntoh24(fh
->fh_s_id
) == FC_FID_FLOGI
)
823 recv
= fc_lport_recv_logo_req
;
826 recv
= lport
->tt
.disc_recv_req
;
829 recv
= fc_lport_recv_echo_req
;
832 recv
= fc_lport_recv_rlir_req
;
835 recv
= fc_lport_recv_rnid_req
;
841 FC_LPORT_DBG(lport
, "dropping invalid frame (eof %x)\n",
845 mutex_unlock(&lport
->lp_mutex
);
848 * The common exch_done for all request may not be good
849 * if any request requires longer hold on exhange. XXX
851 lport
->tt
.exch_done(sp
);
855 * fc_lport_reset() - Reset an lport
856 * @lport: The lport which should be reset
858 * Locking Note: This functions should not be called with the
861 int fc_lport_reset(struct fc_lport
*lport
)
863 cancel_delayed_work_sync(&lport
->retry_work
);
864 mutex_lock(&lport
->lp_mutex
);
865 fc_lport_enter_reset(lport
);
866 mutex_unlock(&lport
->lp_mutex
);
869 EXPORT_SYMBOL(fc_lport_reset
);
872 * fc_lport_reset_locked() - Reset the local port
873 * @lport: Fibre Channel local port to be reset
875 * Locking Note: The lport lock is expected to be held before calling
878 static void fc_lport_reset_locked(struct fc_lport
*lport
)
881 lport
->tt
.rport_logoff(lport
->dns_rp
);
883 lport
->ptp_rp
= NULL
;
885 lport
->tt
.disc_stop(lport
);
887 lport
->tt
.exch_mgr_reset(lport
, 0, 0);
888 fc_host_fabric_name(lport
->host
) = 0;
889 fc_host_port_id(lport
->host
) = 0;
893 * fc_lport_enter_reset() - Reset the local port
894 * @lport: Fibre Channel local port to be reset
896 * Locking Note: The lport lock is expected to be held before calling
899 static void fc_lport_enter_reset(struct fc_lport
*lport
)
901 FC_LPORT_DBG(lport
, "Entered RESET state from %s state\n",
902 fc_lport_state(lport
));
906 fc_vport_set_state(lport
->vport
, FC_VPORT_INITIALIZING
);
908 fc_vport_set_state(lport
->vport
, FC_VPORT_LINKDOWN
);
910 fc_lport_state_enter(lport
, LPORT_ST_RESET
);
911 fc_vports_linkchange(lport
);
912 fc_lport_reset_locked(lport
);
914 fc_lport_enter_flogi(lport
);
918 * fc_lport_enter_disabled() - disable the local port
919 * @lport: Fibre Channel local port to be reset
921 * Locking Note: The lport lock is expected to be held before calling
924 static void fc_lport_enter_disabled(struct fc_lport
*lport
)
926 FC_LPORT_DBG(lport
, "Entered disabled state from %s state\n",
927 fc_lport_state(lport
));
929 fc_lport_state_enter(lport
, LPORT_ST_DISABLED
);
930 fc_vports_linkchange(lport
);
931 fc_lport_reset_locked(lport
);
935 * fc_lport_error() - Handler for any errors
936 * @lport: The fc_lport object
937 * @fp: The frame pointer
939 * If the error was caused by a resource allocation failure
940 * then wait for half a second and retry, otherwise retry
941 * after the e_d_tov time.
943 static void fc_lport_error(struct fc_lport
*lport
, struct fc_frame
*fp
)
945 unsigned long delay
= 0;
946 FC_LPORT_DBG(lport
, "Error %ld in state %s, retries %d\n",
947 PTR_ERR(fp
), fc_lport_state(lport
),
950 if (!fp
|| PTR_ERR(fp
) == -FC_EX_TIMEOUT
) {
952 * Memory allocation failure, or the exchange timed out.
955 if (lport
->retry_count
< lport
->max_retry_count
) {
956 lport
->retry_count
++;
958 delay
= msecs_to_jiffies(500);
960 delay
= msecs_to_jiffies(lport
->e_d_tov
);
962 schedule_delayed_work(&lport
->retry_work
, delay
);
964 switch (lport
->state
) {
965 case LPORT_ST_DISABLED
:
968 case LPORT_ST_RPN_ID
:
969 case LPORT_ST_RFT_ID
:
974 fc_lport_enter_reset(lport
);
982 * fc_lport_rft_id_resp() - Handle response to Register Fibre
983 * Channel Types by ID (RPN_ID) request
984 * @sp: current sequence in RPN_ID exchange
985 * @fp: response frame
986 * @lp_arg: Fibre Channel host port instance
988 * Locking Note: This function will be called without the lport lock
989 * held, but it will lock, call an _enter_* function or fc_lport_error
990 * and then unlock the lport.
992 static void fc_lport_rft_id_resp(struct fc_seq
*sp
, struct fc_frame
*fp
,
995 struct fc_lport
*lport
= lp_arg
;
996 struct fc_frame_header
*fh
;
997 struct fc_ct_hdr
*ct
;
999 FC_LPORT_DBG(lport
, "Received a RFT_ID %s\n", fc_els_resp_type(fp
));
1001 if (fp
== ERR_PTR(-FC_EX_CLOSED
))
1004 mutex_lock(&lport
->lp_mutex
);
1006 if (lport
->state
!= LPORT_ST_RFT_ID
) {
1007 FC_LPORT_DBG(lport
, "Received a RFT_ID response, but in state "
1008 "%s\n", fc_lport_state(lport
));
1015 fc_lport_error(lport
, fp
);
1019 fh
= fc_frame_header_get(fp
);
1020 ct
= fc_frame_payload_get(fp
, sizeof(*ct
));
1022 if (fh
&& ct
&& fh
->fh_type
== FC_TYPE_CT
&&
1023 ct
->ct_fs_type
== FC_FST_DIR
&&
1024 ct
->ct_fs_subtype
== FC_NS_SUBTYPE
&&
1025 ntohs(ct
->ct_cmd
) == FC_FS_ACC
)
1026 fc_lport_enter_scr(lport
);
1028 fc_lport_error(lport
, fp
);
1032 mutex_unlock(&lport
->lp_mutex
);
1036 * fc_lport_rpn_id_resp() - Handle response to Register Port
1037 * Name by ID (RPN_ID) request
1038 * @sp: current sequence in RPN_ID exchange
1039 * @fp: response frame
1040 * @lp_arg: Fibre Channel host port instance
1042 * Locking Note: This function will be called without the lport lock
1043 * held, but it will lock, call an _enter_* function or fc_lport_error
1044 * and then unlock the lport.
1046 static void fc_lport_rpn_id_resp(struct fc_seq
*sp
, struct fc_frame
*fp
,
1049 struct fc_lport
*lport
= lp_arg
;
1050 struct fc_frame_header
*fh
;
1051 struct fc_ct_hdr
*ct
;
1053 FC_LPORT_DBG(lport
, "Received a RPN_ID %s\n", fc_els_resp_type(fp
));
1055 if (fp
== ERR_PTR(-FC_EX_CLOSED
))
1058 mutex_lock(&lport
->lp_mutex
);
1060 if (lport
->state
!= LPORT_ST_RPN_ID
) {
1061 FC_LPORT_DBG(lport
, "Received a RPN_ID response, but in state "
1062 "%s\n", fc_lport_state(lport
));
1069 fc_lport_error(lport
, fp
);
1073 fh
= fc_frame_header_get(fp
);
1074 ct
= fc_frame_payload_get(fp
, sizeof(*ct
));
1075 if (fh
&& ct
&& fh
->fh_type
== FC_TYPE_CT
&&
1076 ct
->ct_fs_type
== FC_FST_DIR
&&
1077 ct
->ct_fs_subtype
== FC_NS_SUBTYPE
&&
1078 ntohs(ct
->ct_cmd
) == FC_FS_ACC
)
1079 fc_lport_enter_rft_id(lport
);
1081 fc_lport_error(lport
, fp
);
1086 mutex_unlock(&lport
->lp_mutex
);
1090 * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request
1091 * @sp: current sequence in SCR exchange
1092 * @fp: response frame
1093 * @lp_arg: Fibre Channel lport port instance that sent the registration request
1095 * Locking Note: This function will be called without the lport lock
1096 * held, but it will lock, call an _enter_* function or fc_lport_error
1097 * and then unlock the lport.
1099 static void fc_lport_scr_resp(struct fc_seq
*sp
, struct fc_frame
*fp
,
1102 struct fc_lport
*lport
= lp_arg
;
1105 FC_LPORT_DBG(lport
, "Received a SCR %s\n", fc_els_resp_type(fp
));
1107 if (fp
== ERR_PTR(-FC_EX_CLOSED
))
1110 mutex_lock(&lport
->lp_mutex
);
1112 if (lport
->state
!= LPORT_ST_SCR
) {
1113 FC_LPORT_DBG(lport
, "Received a SCR response, but in state "
1114 "%s\n", fc_lport_state(lport
));
1121 fc_lport_error(lport
, fp
);
1125 op
= fc_frame_payload_op(fp
);
1126 if (op
== ELS_LS_ACC
)
1127 fc_lport_enter_ready(lport
);
1129 fc_lport_error(lport
, fp
);
1134 mutex_unlock(&lport
->lp_mutex
);
1138 * fc_lport_enter_scr() - Send a State Change Register (SCR) request
1139 * @lport: Fibre Channel local port to register for state changes
1141 * Locking Note: The lport lock is expected to be held before calling
1144 static void fc_lport_enter_scr(struct fc_lport
*lport
)
1146 struct fc_frame
*fp
;
1148 FC_LPORT_DBG(lport
, "Entered SCR state from %s state\n",
1149 fc_lport_state(lport
));
1151 fc_lport_state_enter(lport
, LPORT_ST_SCR
);
1153 fp
= fc_frame_alloc(lport
, sizeof(struct fc_els_scr
));
1155 fc_lport_error(lport
, fp
);
1159 if (!lport
->tt
.elsct_send(lport
, FC_FID_FCTRL
, fp
, ELS_SCR
,
1160 fc_lport_scr_resp
, lport
, lport
->e_d_tov
))
1161 fc_lport_error(lport
, NULL
);
1165 * fc_lport_enter_rft_id() - Register FC4-types with the name server
1166 * @lport: Fibre Channel local port to register
1168 * Locking Note: The lport lock is expected to be held before calling
1171 static void fc_lport_enter_rft_id(struct fc_lport
*lport
)
1173 struct fc_frame
*fp
;
1174 struct fc_ns_fts
*lps
;
1177 FC_LPORT_DBG(lport
, "Entered RFT_ID state from %s state\n",
1178 fc_lport_state(lport
));
1180 fc_lport_state_enter(lport
, LPORT_ST_RFT_ID
);
1183 i
= sizeof(lps
->ff_type_map
) / sizeof(lps
->ff_type_map
[0]);
1185 if (ntohl(lps
->ff_type_map
[i
]) != 0)
1188 /* nothing to register, move on to SCR */
1189 fc_lport_enter_scr(lport
);
1193 fp
= fc_frame_alloc(lport
, sizeof(struct fc_ct_hdr
) +
1194 sizeof(struct fc_ns_rft
));
1196 fc_lport_error(lport
, fp
);
1200 if (!lport
->tt
.elsct_send(lport
, FC_FID_DIR_SERV
, fp
, FC_NS_RFT_ID
,
1201 fc_lport_rft_id_resp
,
1202 lport
, lport
->e_d_tov
))
1203 fc_lport_error(lport
, fp
);
1207 * fc_rport_enter_rft_id() - Register port name with the name server
1208 * @lport: Fibre Channel local port to register
1210 * Locking Note: The lport lock is expected to be held before calling
1213 static void fc_lport_enter_rpn_id(struct fc_lport
*lport
)
1215 struct fc_frame
*fp
;
1217 FC_LPORT_DBG(lport
, "Entered RPN_ID state from %s state\n",
1218 fc_lport_state(lport
));
1220 fc_lport_state_enter(lport
, LPORT_ST_RPN_ID
);
1222 fp
= fc_frame_alloc(lport
, sizeof(struct fc_ct_hdr
) +
1223 sizeof(struct fc_ns_rn_id
));
1225 fc_lport_error(lport
, fp
);
1229 if (!lport
->tt
.elsct_send(lport
, FC_FID_DIR_SERV
, fp
, FC_NS_RPN_ID
,
1230 fc_lport_rpn_id_resp
,
1231 lport
, lport
->e_d_tov
))
1232 fc_lport_error(lport
, NULL
);
1235 static struct fc_rport_operations fc_lport_rport_ops
= {
1236 .event_callback
= fc_lport_rport_callback
,
1240 * fc_rport_enter_dns() - Create a rport to the name server
1241 * @lport: Fibre Channel local port requesting a rport for the name server
1243 * Locking Note: The lport lock is expected to be held before calling
1246 static void fc_lport_enter_dns(struct fc_lport
*lport
)
1248 struct fc_rport_priv
*rdata
;
1250 FC_LPORT_DBG(lport
, "Entered DNS state from %s state\n",
1251 fc_lport_state(lport
));
1253 fc_lport_state_enter(lport
, LPORT_ST_DNS
);
1255 mutex_lock(&lport
->disc
.disc_mutex
);
1256 rdata
= lport
->tt
.rport_create(lport
, FC_FID_DIR_SERV
);
1257 mutex_unlock(&lport
->disc
.disc_mutex
);
1261 rdata
->ops
= &fc_lport_rport_ops
;
1262 lport
->tt
.rport_login(rdata
);
1266 fc_lport_error(lport
, NULL
);
1270 * fc_lport_timeout() - Handler for the retry_work timer.
1271 * @work: The work struct of the fc_lport
1273 static void fc_lport_timeout(struct work_struct
*work
)
1275 struct fc_lport
*lport
=
1276 container_of(work
, struct fc_lport
,
1279 mutex_lock(&lport
->lp_mutex
);
1281 switch (lport
->state
) {
1282 case LPORT_ST_DISABLED
:
1285 case LPORT_ST_READY
:
1288 case LPORT_ST_RESET
:
1290 case LPORT_ST_FLOGI
:
1291 fc_lport_enter_flogi(lport
);
1294 fc_lport_enter_dns(lport
);
1296 case LPORT_ST_RPN_ID
:
1297 fc_lport_enter_rpn_id(lport
);
1299 case LPORT_ST_RFT_ID
:
1300 fc_lport_enter_rft_id(lport
);
1303 fc_lport_enter_scr(lport
);
1306 fc_lport_enter_logo(lport
);
1310 mutex_unlock(&lport
->lp_mutex
);
1314 * fc_lport_logo_resp() - Handle response to LOGO request
1315 * @sp: current sequence in LOGO exchange
1316 * @fp: response frame
1317 * @lp_arg: Fibre Channel lport port instance that sent the LOGO request
1319 * Locking Note: This function will be called without the lport lock
1320 * held, but it will lock, call an _enter_* function or fc_lport_error
1321 * and then unlock the lport.
1323 void fc_lport_logo_resp(struct fc_seq
*sp
, struct fc_frame
*fp
,
1326 struct fc_lport
*lport
= lp_arg
;
1329 FC_LPORT_DBG(lport
, "Received a LOGO %s\n", fc_els_resp_type(fp
));
1331 if (fp
== ERR_PTR(-FC_EX_CLOSED
))
1334 mutex_lock(&lport
->lp_mutex
);
1336 if (lport
->state
!= LPORT_ST_LOGO
) {
1337 FC_LPORT_DBG(lport
, "Received a LOGO response, but in state "
1338 "%s\n", fc_lport_state(lport
));
1345 fc_lport_error(lport
, fp
);
1349 op
= fc_frame_payload_op(fp
);
1350 if (op
== ELS_LS_ACC
)
1351 fc_lport_enter_disabled(lport
);
1353 fc_lport_error(lport
, fp
);
1358 mutex_unlock(&lport
->lp_mutex
);
1360 EXPORT_SYMBOL(fc_lport_logo_resp
);
1363 * fc_rport_enter_logo() - Logout of the fabric
1364 * @lport: Fibre Channel local port to be logged out
1366 * Locking Note: The lport lock is expected to be held before calling
1369 static void fc_lport_enter_logo(struct fc_lport
*lport
)
1371 struct fc_frame
*fp
;
1372 struct fc_els_logo
*logo
;
1374 FC_LPORT_DBG(lport
, "Entered LOGO state from %s state\n",
1375 fc_lport_state(lport
));
1377 fc_lport_state_enter(lport
, LPORT_ST_LOGO
);
1378 fc_vports_linkchange(lport
);
1380 fp
= fc_frame_alloc(lport
, sizeof(*logo
));
1382 fc_lport_error(lport
, fp
);
1386 if (!lport
->tt
.elsct_send(lport
, FC_FID_FLOGI
, fp
, ELS_LOGO
,
1387 fc_lport_logo_resp
, lport
, lport
->e_d_tov
))
1388 fc_lport_error(lport
, NULL
);
1392 * fc_lport_flogi_resp() - Handle response to FLOGI request
1393 * @sp: current sequence in FLOGI exchange
1394 * @fp: response frame
1395 * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request
1397 * Locking Note: This function will be called without the lport lock
1398 * held, but it will lock, call an _enter_* function or fc_lport_error
1399 * and then unlock the lport.
1401 void fc_lport_flogi_resp(struct fc_seq
*sp
, struct fc_frame
*fp
,
1404 struct fc_lport
*lport
= lp_arg
;
1405 struct fc_frame_header
*fh
;
1406 struct fc_els_flogi
*flp
;
1409 unsigned int r_a_tov
;
1410 unsigned int e_d_tov
;
1413 FC_LPORT_DBG(lport
, "Received a FLOGI %s\n", fc_els_resp_type(fp
));
1415 if (fp
== ERR_PTR(-FC_EX_CLOSED
))
1418 mutex_lock(&lport
->lp_mutex
);
1420 if (lport
->state
!= LPORT_ST_FLOGI
) {
1421 FC_LPORT_DBG(lport
, "Received a FLOGI response, but in state "
1422 "%s\n", fc_lport_state(lport
));
1429 fc_lport_error(lport
, fp
);
1433 fh
= fc_frame_header_get(fp
);
1434 did
= ntoh24(fh
->fh_d_id
);
1435 if (fc_frame_payload_op(fp
) == ELS_LS_ACC
&& did
!= 0) {
1437 printk(KERN_INFO
"libfc: Assigned FID (%6x) in FLOGI response\n",
1439 fc_host_port_id(lport
->host
) = did
;
1441 flp
= fc_frame_payload_get(fp
, sizeof(*flp
));
1443 mfs
= ntohs(flp
->fl_csp
.sp_bb_data
) &
1445 if (mfs
>= FC_SP_MIN_MAX_PAYLOAD
&&
1448 csp_flags
= ntohs(flp
->fl_csp
.sp_features
);
1449 r_a_tov
= ntohl(flp
->fl_csp
.sp_r_a_tov
);
1450 e_d_tov
= ntohl(flp
->fl_csp
.sp_e_d_tov
);
1451 if (csp_flags
& FC_SP_FT_EDTR
)
1454 lport
->npiv_enabled
= !!(csp_flags
& FC_SP_FT_NPIV_ACC
);
1456 if ((csp_flags
& FC_SP_FT_FPORT
) == 0) {
1457 if (e_d_tov
> lport
->e_d_tov
)
1458 lport
->e_d_tov
= e_d_tov
;
1459 lport
->r_a_tov
= 2 * e_d_tov
;
1460 printk(KERN_INFO
"libfc: Port (%6x) entered "
1461 "point to point mode\n", did
);
1462 fc_lport_ptp_setup(lport
, ntoh24(fh
->fh_s_id
),
1468 lport
->e_d_tov
= e_d_tov
;
1469 lport
->r_a_tov
= r_a_tov
;
1470 fc_host_fabric_name(lport
->host
) =
1471 get_unaligned_be64(&flp
->fl_wwnn
);
1472 fc_lport_enter_dns(lport
);
1476 FC_LPORT_DBG(lport
, "Bad FLOGI response\n");
1482 mutex_unlock(&lport
->lp_mutex
);
1484 EXPORT_SYMBOL(fc_lport_flogi_resp
);
1487 * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager
1488 * @lport: Fibre Channel local port to be logged in to the fabric
1490 * Locking Note: The lport lock is expected to be held before calling
1493 void fc_lport_enter_flogi(struct fc_lport
*lport
)
1495 struct fc_frame
*fp
;
1497 FC_LPORT_DBG(lport
, "Entered FLOGI state from %s state\n",
1498 fc_lport_state(lport
));
1500 fc_lport_state_enter(lport
, LPORT_ST_FLOGI
);
1502 fp
= fc_frame_alloc(lport
, sizeof(struct fc_els_flogi
));
1504 return fc_lport_error(lport
, fp
);
1506 if (!lport
->tt
.elsct_send(lport
, FC_FID_FLOGI
, fp
,
1507 lport
->vport
? ELS_FDISC
: ELS_FLOGI
,
1508 fc_lport_flogi_resp
, lport
, lport
->e_d_tov
))
1509 fc_lport_error(lport
, NULL
);
1512 /* Configure a fc_lport */
1513 int fc_lport_config(struct fc_lport
*lport
)
1515 INIT_DELAYED_WORK(&lport
->retry_work
, fc_lport_timeout
);
1516 mutex_init(&lport
->lp_mutex
);
1518 fc_lport_state_enter(lport
, LPORT_ST_DISABLED
);
1520 fc_lport_add_fc4_type(lport
, FC_TYPE_FCP
);
1521 fc_lport_add_fc4_type(lport
, FC_TYPE_CT
);
1525 EXPORT_SYMBOL(fc_lport_config
);
1527 int fc_lport_init(struct fc_lport
*lport
)
1529 if (!lport
->tt
.lport_recv
)
1530 lport
->tt
.lport_recv
= fc_lport_recv_req
;
1532 if (!lport
->tt
.lport_reset
)
1533 lport
->tt
.lport_reset
= fc_lport_reset
;
1535 fc_host_port_type(lport
->host
) = FC_PORTTYPE_NPORT
;
1536 fc_host_node_name(lport
->host
) = lport
->wwnn
;
1537 fc_host_port_name(lport
->host
) = lport
->wwpn
;
1538 fc_host_supported_classes(lport
->host
) = FC_COS_CLASS3
;
1539 memset(fc_host_supported_fc4s(lport
->host
), 0,
1540 sizeof(fc_host_supported_fc4s(lport
->host
)));
1541 fc_host_supported_fc4s(lport
->host
)[2] = 1;
1542 fc_host_supported_fc4s(lport
->host
)[7] = 1;
1544 /* This value is also unchanging */
1545 memset(fc_host_active_fc4s(lport
->host
), 0,
1546 sizeof(fc_host_active_fc4s(lport
->host
)));
1547 fc_host_active_fc4s(lport
->host
)[2] = 1;
1548 fc_host_active_fc4s(lport
->host
)[7] = 1;
1549 fc_host_maxframe_size(lport
->host
) = lport
->mfs
;
1550 fc_host_supported_speeds(lport
->host
) = 0;
1551 if (lport
->link_supported_speeds
& FC_PORTSPEED_1GBIT
)
1552 fc_host_supported_speeds(lport
->host
) |= FC_PORTSPEED_1GBIT
;
1553 if (lport
->link_supported_speeds
& FC_PORTSPEED_10GBIT
)
1554 fc_host_supported_speeds(lport
->host
) |= FC_PORTSPEED_10GBIT
;
1558 EXPORT_SYMBOL(fc_lport_init
);