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>
98 /* Fabric IDs to use for point-to-point mode, chosen on whims. */
99 #define FC_LOCAL_PTP_FID_LO 0x010101
100 #define FC_LOCAL_PTP_FID_HI 0x010102
102 #define DNS_DELAY 3 /* Discovery delay after RSCN (in seconds)*/
104 static void fc_lport_error(struct fc_lport *, struct fc_frame *);
106 static void fc_lport_enter_reset(struct fc_lport *);
107 static void fc_lport_enter_flogi(struct fc_lport *);
108 static void fc_lport_enter_dns(struct fc_lport *);
109 static void fc_lport_enter_rpn_id(struct fc_lport *);
110 static void fc_lport_enter_rft_id(struct fc_lport *);
111 static void fc_lport_enter_scr(struct fc_lport *);
112 static void fc_lport_enter_ready(struct fc_lport *);
113 static void fc_lport_enter_logo(struct fc_lport *);
115 static const char *fc_lport_state_names[] = {
116 [LPORT_ST_DISABLED] = "disabled",
117 [LPORT_ST_FLOGI] = "FLOGI",
118 [LPORT_ST_DNS] = "dNS",
119 [LPORT_ST_RPN_ID] = "RPN_ID",
120 [LPORT_ST_RFT_ID] = "RFT_ID",
121 [LPORT_ST_SCR] = "SCR",
122 [LPORT_ST_READY] = "Ready",
123 [LPORT_ST_LOGO] = "LOGO",
124 [LPORT_ST_RESET] = "reset",
127 static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp)
134 * fc_lport_rport_callback() - Event handler for rport events
135 * @lport: The lport which is receiving the event
136 * @rport: The rport which the event has occured on
137 * @event: The event that occured
139 * Locking Note: The rport lock should not be held when calling
142 static void fc_lport_rport_callback(struct fc_lport *lport,
143 struct fc_rport *rport,
144 enum fc_rport_event event)
146 FC_LPORT_DBG(lport, "Received a %d event for port (%6x)\n", event,
150 case RPORT_EV_CREATED:
151 if (rport->port_id == FC_FID_DIR_SERV) {
152 mutex_lock(&lport->lp_mutex);
153 if (lport->state == LPORT_ST_DNS) {
154 lport->dns_rp = rport;
155 fc_lport_enter_rpn_id(lport);
157 FC_LPORT_DBG(lport, "Received an CREATED event "
158 "on port (%6x) for the directory "
159 "server, but the lport is not "
160 "in the DNS state, it's in the "
161 "%d state", rport->port_id,
163 lport->tt.rport_logoff(rport);
165 mutex_unlock(&lport->lp_mutex);
167 FC_LPORT_DBG(lport, "Received an event for port (%6x) "
168 "which is not the directory server\n",
172 case RPORT_EV_FAILED:
174 if (rport->port_id == FC_FID_DIR_SERV) {
175 mutex_lock(&lport->lp_mutex);
176 lport->dns_rp = NULL;
177 mutex_unlock(&lport->lp_mutex);
180 FC_LPORT_DBG(lport, "Received an event for port (%6x) "
181 "which is not the directory server\n",
190 * fc_lport_state() - Return a string which represents the lport's state
191 * @lport: The lport whose state is to converted to a string
193 static const char *fc_lport_state(struct fc_lport *lport)
197 cp = fc_lport_state_names[lport->state];
204 * fc_lport_ptp_setup() - Create an rport for point-to-point mode
205 * @lport: The lport to attach the ptp rport to
206 * @fid: The FID of the ptp rport
207 * @remote_wwpn: The WWPN of the ptp rport
208 * @remote_wwnn: The WWNN of the ptp rport
210 static void fc_lport_ptp_setup(struct fc_lport *lport,
211 u32 remote_fid, u64 remote_wwpn,
214 struct fc_rport_identifiers ids;
216 ids.port_id = remote_fid;
217 ids.port_name = remote_wwpn;
218 ids.node_name = remote_wwnn;
219 ids.roles = FC_RPORT_ROLE_UNKNOWN;
222 lport->tt.rport_logoff(lport->ptp_rp);
223 lport->ptp_rp = NULL;
226 lport->ptp_rp = lport->tt.rport_create(lport, &ids);
228 lport->tt.rport_login(lport->ptp_rp);
230 fc_lport_enter_ready(lport);
233 void fc_get_host_port_type(struct Scsi_Host *shost)
235 /* TODO - currently just NPORT */
236 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
238 EXPORT_SYMBOL(fc_get_host_port_type);
240 void fc_get_host_port_state(struct Scsi_Host *shost)
242 struct fc_lport *lp = shost_priv(shost);
245 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
247 fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
249 EXPORT_SYMBOL(fc_get_host_port_state);
251 void fc_get_host_speed(struct Scsi_Host *shost)
253 struct fc_lport *lport = shost_priv(shost);
255 fc_host_speed(shost) = lport->link_speed;
257 EXPORT_SYMBOL(fc_get_host_speed);
259 struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost)
261 struct fc_host_statistics *fcoe_stats;
262 struct fc_lport *lp = shost_priv(shost);
263 struct timespec v0, v1;
266 fcoe_stats = &lp->host_stats;
267 memset(fcoe_stats, 0, sizeof(struct fc_host_statistics));
269 jiffies_to_timespec(jiffies, &v0);
270 jiffies_to_timespec(lp->boot_time, &v1);
271 fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec);
273 for_each_possible_cpu(cpu) {
274 struct fcoe_dev_stats *stats;
276 stats = per_cpu_ptr(lp->dev_stats, cpu);
278 fcoe_stats->tx_frames += stats->TxFrames;
279 fcoe_stats->tx_words += stats->TxWords;
280 fcoe_stats->rx_frames += stats->RxFrames;
281 fcoe_stats->rx_words += stats->RxWords;
282 fcoe_stats->error_frames += stats->ErrorFrames;
283 fcoe_stats->invalid_crc_count += stats->InvalidCRCCount;
284 fcoe_stats->fcp_input_requests += stats->InputRequests;
285 fcoe_stats->fcp_output_requests += stats->OutputRequests;
286 fcoe_stats->fcp_control_requests += stats->ControlRequests;
287 fcoe_stats->fcp_input_megabytes += stats->InputMegabytes;
288 fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes;
289 fcoe_stats->link_failure_count += stats->LinkFailureCount;
291 fcoe_stats->lip_count = -1;
292 fcoe_stats->nos_count = -1;
293 fcoe_stats->loss_of_sync_count = -1;
294 fcoe_stats->loss_of_signal_count = -1;
295 fcoe_stats->prim_seq_protocol_err_count = -1;
296 fcoe_stats->dumped_frames = -1;
299 EXPORT_SYMBOL(fc_get_host_stats);
302 * Fill in FLOGI command for request.
305 fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi,
308 struct fc_els_csp *sp;
309 struct fc_els_cssp *cp;
311 memset(flogi, 0, sizeof(*flogi));
312 flogi->fl_cmd = (u8) op;
313 put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn);
314 put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn);
316 sp->sp_hi_ver = 0x20;
317 sp->sp_lo_ver = 0x20;
318 sp->sp_bb_cred = htons(10); /* this gets set by gateway */
319 sp->sp_bb_data = htons((u16) lport->mfs);
320 cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */
321 cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
322 if (op != ELS_FLOGI) {
323 sp->sp_features = htons(FC_SP_FT_CIRO);
324 sp->sp_tot_seq = htons(255); /* seq. we accept */
325 sp->sp_rel_off = htons(0x1f);
326 sp->sp_e_d_tov = htonl(lport->e_d_tov);
328 cp->cp_rdfs = htons((u16) lport->mfs);
329 cp->cp_con_seq = htons(255);
335 * Add a supported FC-4 type.
337 static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type)
341 mp = &lport->fcts.ff_type_map[type / FC_NS_BPW];
342 *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW));
346 * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report.
347 * @lport: Fibre Channel local port recieving the RLIR
348 * @sp: current sequence in the RLIR exchange
349 * @fp: RLIR request frame
351 * Locking Note: The lport lock is exected to be held before calling
354 static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp,
355 struct fc_lport *lport)
357 FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n",
358 fc_lport_state(lport));
360 lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL);
365 * fc_lport_recv_echo_req() - Handle received ECHO request
366 * @lport: Fibre Channel local port recieving the ECHO
367 * @sp: current sequence in the ECHO exchange
368 * @fp: ECHO request frame
370 * Locking Note: The lport lock is exected to be held before calling
373 static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp,
374 struct fc_lport *lport)
377 struct fc_exch *ep = fc_seq_exch(sp);
383 FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n",
384 fc_lport_state(lport));
386 len = fr_len(in_fp) - sizeof(struct fc_frame_header);
387 pp = fc_frame_payload_get(in_fp, len);
389 if (len < sizeof(__be32))
390 len = sizeof(__be32);
392 fp = fc_frame_alloc(lport, len);
394 dp = fc_frame_payload_get(fp, len);
396 *((u32 *)dp) = htonl(ELS_LS_ACC << 24);
397 sp = lport->tt.seq_start_next(sp);
398 f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ;
399 fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
400 FC_TYPE_ELS, f_ctl, 0);
401 lport->tt.seq_send(lport, sp, fp);
403 fc_frame_free(in_fp);
407 * fc_lport_recv_echo_req() - Handle received Request Node ID data request
408 * @lport: Fibre Channel local port recieving the RNID
409 * @sp: current sequence in the RNID exchange
410 * @fp: RNID request frame
412 * Locking Note: The lport lock is exected to be held before calling
415 static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp,
416 struct fc_lport *lport)
419 struct fc_exch *ep = fc_seq_exch(sp);
420 struct fc_els_rnid *req;
422 struct fc_els_rnid_resp rnid;
423 struct fc_els_rnid_cid cid;
424 struct fc_els_rnid_gen gen;
426 struct fc_seq_els_data rjt_data;
431 FC_LPORT_DBG(lport, "Received RNID request while in state %s\n",
432 fc_lport_state(lport));
434 req = fc_frame_payload_get(in_fp, sizeof(*req));
437 rjt_data.reason = ELS_RJT_LOGIC;
438 rjt_data.explan = ELS_EXPL_NONE;
439 lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);
443 if (fmt != ELS_RNIDF_GEN ||
444 ntohl(lport->rnid_gen.rnid_atype) == 0) {
445 fmt = ELS_RNIDF_NONE; /* nothing to provide */
446 len -= sizeof(rp->gen);
448 fp = fc_frame_alloc(lport, len);
450 rp = fc_frame_payload_get(fp, len);
452 rp->rnid.rnid_cmd = ELS_LS_ACC;
453 rp->rnid.rnid_fmt = fmt;
454 rp->rnid.rnid_cid_len = sizeof(rp->cid);
455 rp->cid.rnid_wwpn = htonll(lport->wwpn);
456 rp->cid.rnid_wwnn = htonll(lport->wwnn);
457 if (fmt == ELS_RNIDF_GEN) {
458 rp->rnid.rnid_sid_len = sizeof(rp->gen);
459 memcpy(&rp->gen, &lport->rnid_gen,
462 sp = lport->tt.seq_start_next(sp);
463 f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ;
464 f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT;
465 fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
466 FC_TYPE_ELS, f_ctl, 0);
467 lport->tt.seq_send(lport, sp, fp);
470 fc_frame_free(in_fp);
474 * fc_lport_recv_adisc_req() - Handle received Address Discovery Request
475 * @lport: Fibre Channel local port recieving the ADISC
476 * @sp: current sequence in the ADISC exchange
477 * @fp: ADISC request frame
479 * Locking Note: The lport lock is expected to be held before calling
482 static void fc_lport_recv_adisc_req(struct fc_seq *sp, struct fc_frame *in_fp,
483 struct fc_lport *lport)
486 struct fc_exch *ep = fc_seq_exch(sp);
487 struct fc_els_adisc *req, *rp;
488 struct fc_seq_els_data rjt_data;
492 FC_LPORT_DBG(lport, "Received ADISC request while in state %s\n",
493 fc_lport_state(lport));
495 req = fc_frame_payload_get(in_fp, sizeof(*req));
498 rjt_data.reason = ELS_RJT_LOGIC;
499 rjt_data.explan = ELS_EXPL_NONE;
500 lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);
503 fp = fc_frame_alloc(lport, len);
505 rp = fc_frame_payload_get(fp, len);
507 rp->adisc_cmd = ELS_LS_ACC;
508 rp->adisc_wwpn = htonll(lport->wwpn);
509 rp->adisc_wwnn = htonll(lport->wwnn);
510 hton24(rp->adisc_port_id,
511 fc_host_port_id(lport->host));
512 sp = lport->tt.seq_start_next(sp);
513 f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ;
514 f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT;
515 fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
516 FC_TYPE_ELS, f_ctl, 0);
517 lport->tt.seq_send(lport, sp, fp);
520 fc_frame_free(in_fp);
524 * fc_lport_recv_logo_req() - Handle received fabric LOGO request
525 * @lport: Fibre Channel local port recieving the LOGO
526 * @sp: current sequence in the LOGO exchange
527 * @fp: LOGO request frame
529 * Locking Note: The lport lock is exected to be held before calling
532 static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp,
533 struct fc_lport *lport)
535 lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL);
536 fc_lport_enter_reset(lport);
541 * fc_fabric_login() - Start the lport state machine
542 * @lport: The lport that should log into the fabric
544 * Locking Note: This function should not be called
545 * with the lport lock held.
547 int fc_fabric_login(struct fc_lport *lport)
551 mutex_lock(&lport->lp_mutex);
552 if (lport->state == LPORT_ST_DISABLED) {
553 fc_lport_enter_reset(lport);
556 mutex_unlock(&lport->lp_mutex);
560 EXPORT_SYMBOL(fc_fabric_login);
563 * fc_linkup() - Handler for transport linkup events
564 * @lport: The lport whose link is up
566 void fc_linkup(struct fc_lport *lport)
568 printk(KERN_INFO "libfc: Link up on port (%6x)\n",
569 fc_host_port_id(lport->host));
571 mutex_lock(&lport->lp_mutex);
572 if (!lport->link_up) {
575 if (lport->state == LPORT_ST_RESET)
576 fc_lport_enter_flogi(lport);
578 mutex_unlock(&lport->lp_mutex);
580 EXPORT_SYMBOL(fc_linkup);
583 * fc_linkdown() - Handler for transport linkdown events
584 * @lport: The lport whose link is down
586 void fc_linkdown(struct fc_lport *lport)
588 mutex_lock(&lport->lp_mutex);
589 printk(KERN_INFO "libfc: Link down on port (%6x)\n",
590 fc_host_port_id(lport->host));
592 if (lport->link_up) {
594 fc_lport_enter_reset(lport);
595 lport->tt.fcp_cleanup(lport);
597 mutex_unlock(&lport->lp_mutex);
599 EXPORT_SYMBOL(fc_linkdown);
602 * fc_fabric_logoff() - Logout of the fabric
603 * @lport: fc_lport pointer to logoff the fabric
606 * 0 for success, -1 for failure
608 int fc_fabric_logoff(struct fc_lport *lport)
610 lport->tt.disc_stop_final(lport);
611 mutex_lock(&lport->lp_mutex);
613 lport->tt.rport_logoff(lport->dns_rp);
614 mutex_unlock(&lport->lp_mutex);
615 lport->tt.rport_flush_queue();
616 mutex_lock(&lport->lp_mutex);
617 fc_lport_enter_logo(lport);
618 mutex_unlock(&lport->lp_mutex);
619 cancel_delayed_work_sync(&lport->retry_work);
622 EXPORT_SYMBOL(fc_fabric_logoff);
625 * fc_lport_destroy() - unregister a fc_lport
626 * @lport: fc_lport pointer to unregister
631 * exit routine for fc_lport instance
632 * clean-up all the allocated memory
633 * and free up other system resources.
636 int fc_lport_destroy(struct fc_lport *lport)
638 mutex_lock(&lport->lp_mutex);
639 lport->state = LPORT_ST_DISABLED;
641 lport->tt.frame_send = fc_frame_drop;
642 mutex_unlock(&lport->lp_mutex);
644 lport->tt.fcp_abort_io(lport);
645 lport->tt.disc_stop_final(lport);
646 lport->tt.exch_mgr_reset(lport, 0, 0);
649 EXPORT_SYMBOL(fc_lport_destroy);
652 * fc_set_mfs() - sets up the mfs for the corresponding fc_lport
653 * @lport: fc_lport pointer to unregister
654 * @mfs: the new mfs for fc_lport
656 * Set mfs for the given fc_lport to the new mfs.
658 * Return: 0 for success
660 int fc_set_mfs(struct fc_lport *lport, u32 mfs)
662 unsigned int old_mfs;
665 mutex_lock(&lport->lp_mutex);
667 old_mfs = lport->mfs;
669 if (mfs >= FC_MIN_MAX_FRAME) {
671 if (mfs > FC_MAX_FRAME)
673 mfs -= sizeof(struct fc_frame_header);
678 if (!rc && mfs < old_mfs)
679 fc_lport_enter_reset(lport);
681 mutex_unlock(&lport->lp_mutex);
685 EXPORT_SYMBOL(fc_set_mfs);
688 * fc_lport_disc_callback() - Callback for discovery events
689 * @lport: FC local port
690 * @event: The discovery event
692 void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event)
695 case DISC_EV_SUCCESS:
696 FC_LPORT_DBG(lport, "Discovery succeeded\n");
699 printk(KERN_ERR "libfc: Discovery failed for port (%6x)\n",
700 fc_host_port_id(lport->host));
701 mutex_lock(&lport->lp_mutex);
702 fc_lport_enter_reset(lport);
703 mutex_unlock(&lport->lp_mutex);
712 * fc_rport_enter_ready() - Enter the ready state and start discovery
713 * @lport: Fibre Channel local port that is ready
715 * Locking Note: The lport lock is expected to be held before calling
718 static void fc_lport_enter_ready(struct fc_lport *lport)
720 FC_LPORT_DBG(lport, "Entered READY from state %s\n",
721 fc_lport_state(lport));
723 fc_lport_state_enter(lport, LPORT_ST_READY);
725 lport->tt.disc_start(fc_lport_disc_callback, lport);
729 * fc_lport_recv_flogi_req() - Receive a FLOGI request
730 * @sp_in: The sequence the FLOGI is on
731 * @rx_fp: The frame the FLOGI is in
732 * @lport: The lport that recieved the request
734 * A received FLOGI request indicates a point-to-point connection.
735 * Accept it with the common service parameters indicating our N port.
736 * Set up to do a PLOGI if we have the higher-number WWPN.
738 * Locking Note: The lport lock is exected to be held before calling
741 static void fc_lport_recv_flogi_req(struct fc_seq *sp_in,
742 struct fc_frame *rx_fp,
743 struct fc_lport *lport)
746 struct fc_frame_header *fh;
749 struct fc_els_flogi *flp;
750 struct fc_els_flogi *new_flp;
756 FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n",
757 fc_lport_state(lport));
759 fh = fc_frame_header_get(rx_fp);
760 remote_fid = ntoh24(fh->fh_s_id);
761 flp = fc_frame_payload_get(rx_fp, sizeof(*flp));
764 remote_wwpn = get_unaligned_be64(&flp->fl_wwpn);
765 if (remote_wwpn == lport->wwpn) {
766 printk(KERN_WARNING "libfc: Received FLOGI from port "
767 "with same WWPN %llx\n", remote_wwpn);
770 FC_LPORT_DBG(lport, "FLOGI from port WWPN %llx\n", remote_wwpn);
773 * XXX what is the right thing to do for FIDs?
774 * The originator might expect our S_ID to be 0xfffffe.
775 * But if so, both of us could end up with the same FID.
777 local_fid = FC_LOCAL_PTP_FID_LO;
778 if (remote_wwpn < lport->wwpn) {
779 local_fid = FC_LOCAL_PTP_FID_HI;
780 if (!remote_fid || remote_fid == local_fid)
781 remote_fid = FC_LOCAL_PTP_FID_LO;
782 } else if (!remote_fid) {
783 remote_fid = FC_LOCAL_PTP_FID_HI;
786 fc_host_port_id(lport->host) = local_fid;
788 fp = fc_frame_alloc(lport, sizeof(*flp));
790 sp = lport->tt.seq_start_next(fr_seq(rx_fp));
791 new_flp = fc_frame_payload_get(fp, sizeof(*flp));
792 fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI);
793 new_flp->fl_cmd = (u8) ELS_LS_ACC;
796 * Send the response. If this fails, the originator should
797 * repeat the sequence.
799 f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ;
800 ep = fc_seq_exch(sp);
801 fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
802 FC_TYPE_ELS, f_ctl, 0);
803 lport->tt.seq_send(lport, sp, fp);
806 fc_lport_error(lport, fp);
808 fc_lport_ptp_setup(lport, remote_fid, remote_wwpn,
809 get_unaligned_be64(&flp->fl_wwnn));
811 lport->tt.disc_start(fc_lport_disc_callback, lport);
815 fc_frame_free(rx_fp);
819 * fc_lport_recv_req() - The generic lport request handler
820 * @lport: The lport that received the request
821 * @sp: The sequence the request is on
822 * @fp: The frame the request is in
824 * This function will see if the lport handles the request or
825 * if an rport should handle the request.
827 * Locking Note: This function should not be called with the lport
828 * lock held becuase it will grab the lock.
830 static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp,
833 struct fc_frame_header *fh = fc_frame_header_get(fp);
834 void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *);
835 struct fc_rport *rport;
838 struct fc_seq_els_data rjt_data;
840 mutex_lock(&lport->lp_mutex);
843 * Handle special ELS cases like FLOGI, LOGO, and
844 * RSCN here. These don't require a session.
845 * Even if we had a session, it might not be ready.
849 else if (fh->fh_type == FC_TYPE_ELS &&
850 fh->fh_r_ctl == FC_RCTL_ELS_REQ) {
855 switch (fc_frame_payload_op(fp)) {
857 recv = fc_lport_recv_flogi_req;
860 fh = fc_frame_header_get(fp);
861 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI)
862 recv = fc_lport_recv_logo_req;
865 recv = lport->tt.disc_recv_req;
868 recv = fc_lport_recv_echo_req;
871 recv = fc_lport_recv_rlir_req;
874 recv = fc_lport_recv_rnid_req;
877 recv = fc_lport_recv_adisc_req;
886 * If this is a new incoming PLOGI, we won't find it.
888 s_id = ntoh24(fh->fh_s_id);
889 d_id = ntoh24(fh->fh_d_id);
891 rport = lport->tt.rport_lookup(lport, s_id);
893 lport->tt.rport_recv_req(sp, fp, rport);
896 rjt_data.reason = ELS_RJT_UNAB;
897 rjt_data.explan = ELS_EXPL_NONE;
898 lport->tt.seq_els_rsp_send(sp,
905 FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n",
909 mutex_unlock(&lport->lp_mutex);
912 * The common exch_done for all request may not be good
913 * if any request requires longer hold on exhange. XXX
915 lport->tt.exch_done(sp);
919 * fc_lport_reset() - Reset an lport
920 * @lport: The lport which should be reset
922 * Locking Note: This functions should not be called with the
925 int fc_lport_reset(struct fc_lport *lport)
927 cancel_delayed_work_sync(&lport->retry_work);
928 mutex_lock(&lport->lp_mutex);
929 fc_lport_enter_reset(lport);
930 mutex_unlock(&lport->lp_mutex);
933 EXPORT_SYMBOL(fc_lport_reset);
936 * fc_lport_reset_locked() - Reset the local port
937 * @lport: Fibre Channel local port to be reset
939 * Locking Note: The lport lock is expected to be held before calling
942 static void fc_lport_reset_locked(struct fc_lport *lport)
945 lport->tt.rport_logoff(lport->dns_rp);
948 lport->tt.rport_logoff(lport->ptp_rp);
949 lport->ptp_rp = NULL;
952 lport->tt.disc_stop(lport);
954 lport->tt.exch_mgr_reset(lport, 0, 0);
955 fc_host_fabric_name(lport->host) = 0;
956 fc_host_port_id(lport->host) = 0;
960 * fc_lport_enter_reset() - Reset the local port
961 * @lport: Fibre Channel local port to be reset
963 * Locking Note: The lport lock is expected to be held before calling
966 static void fc_lport_enter_reset(struct fc_lport *lport)
968 FC_LPORT_DBG(lport, "Entered RESET state from %s state\n",
969 fc_lport_state(lport));
971 fc_lport_state_enter(lport, LPORT_ST_RESET);
972 fc_lport_reset_locked(lport);
974 fc_lport_enter_flogi(lport);
978 * fc_lport_enter_disabled() - disable the local port
979 * @lport: Fibre Channel local port to be reset
981 * Locking Note: The lport lock is expected to be held before calling
984 static void fc_lport_enter_disabled(struct fc_lport *lport)
986 FC_LPORT_DBG(lport, "Entered disabled state from %s state\n",
987 fc_lport_state(lport));
989 fc_lport_state_enter(lport, LPORT_ST_DISABLED);
990 fc_lport_reset_locked(lport);
994 * fc_lport_error() - Handler for any errors
995 * @lport: The fc_lport object
996 * @fp: The frame pointer
998 * If the error was caused by a resource allocation failure
999 * then wait for half a second and retry, otherwise retry
1000 * after the e_d_tov time.
1002 static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp)
1004 unsigned long delay = 0;
1005 FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n",
1006 PTR_ERR(fp), fc_lport_state(lport),
1007 lport->retry_count);
1009 if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) {
1011 * Memory allocation failure, or the exchange timed out.
1014 if (lport->retry_count < lport->max_retry_count) {
1015 lport->retry_count++;
1017 delay = msecs_to_jiffies(500);
1019 delay = msecs_to_jiffies(lport->e_d_tov);
1021 schedule_delayed_work(&lport->retry_work, delay);
1023 switch (lport->state) {
1024 case LPORT_ST_DISABLED:
1025 case LPORT_ST_READY:
1026 case LPORT_ST_RESET:
1027 case LPORT_ST_RPN_ID:
1028 case LPORT_ST_RFT_ID:
1031 case LPORT_ST_FLOGI:
1033 fc_lport_enter_reset(lport);
1041 * fc_lport_rft_id_resp() - Handle response to Register Fibre
1042 * Channel Types by ID (RPN_ID) request
1043 * @sp: current sequence in RPN_ID exchange
1044 * @fp: response frame
1045 * @lp_arg: Fibre Channel host port instance
1047 * Locking Note: This function will be called without the lport lock
1048 * held, but it will lock, call an _enter_* function or fc_lport_error
1049 * and then unlock the lport.
1051 static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp,
1054 struct fc_lport *lport = lp_arg;
1055 struct fc_frame_header *fh;
1056 struct fc_ct_hdr *ct;
1058 if (fp == ERR_PTR(-FC_EX_CLOSED))
1061 mutex_lock(&lport->lp_mutex);
1063 FC_LPORT_DBG(lport, "Received a RFT_ID response\n");
1065 if (lport->state != LPORT_ST_RFT_ID) {
1066 FC_LPORT_DBG(lport, "Received a RFT_ID response, but in state "
1067 "%s\n", fc_lport_state(lport));
1074 fc_lport_error(lport, fp);
1078 fh = fc_frame_header_get(fp);
1079 ct = fc_frame_payload_get(fp, sizeof(*ct));
1081 if (fh && ct && fh->fh_type == FC_TYPE_CT &&
1082 ct->ct_fs_type == FC_FST_DIR &&
1083 ct->ct_fs_subtype == FC_NS_SUBTYPE &&
1084 ntohs(ct->ct_cmd) == FC_FS_ACC)
1085 fc_lport_enter_scr(lport);
1087 fc_lport_error(lport, fp);
1091 mutex_unlock(&lport->lp_mutex);
1095 * fc_lport_rpn_id_resp() - Handle response to Register Port
1096 * Name by ID (RPN_ID) request
1097 * @sp: current sequence in RPN_ID exchange
1098 * @fp: response frame
1099 * @lp_arg: Fibre Channel host port instance
1101 * Locking Note: This function will be called without the lport lock
1102 * held, but it will lock, call an _enter_* function or fc_lport_error
1103 * and then unlock the lport.
1105 static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp,
1108 struct fc_lport *lport = lp_arg;
1109 struct fc_frame_header *fh;
1110 struct fc_ct_hdr *ct;
1112 if (fp == ERR_PTR(-FC_EX_CLOSED))
1115 mutex_lock(&lport->lp_mutex);
1117 FC_LPORT_DBG(lport, "Received a RPN_ID response\n");
1119 if (lport->state != LPORT_ST_RPN_ID) {
1120 FC_LPORT_DBG(lport, "Received a RPN_ID response, but in state "
1121 "%s\n", fc_lport_state(lport));
1128 fc_lport_error(lport, fp);
1132 fh = fc_frame_header_get(fp);
1133 ct = fc_frame_payload_get(fp, sizeof(*ct));
1134 if (fh && ct && fh->fh_type == FC_TYPE_CT &&
1135 ct->ct_fs_type == FC_FST_DIR &&
1136 ct->ct_fs_subtype == FC_NS_SUBTYPE &&
1137 ntohs(ct->ct_cmd) == FC_FS_ACC)
1138 fc_lport_enter_rft_id(lport);
1140 fc_lport_error(lport, fp);
1145 mutex_unlock(&lport->lp_mutex);
1149 * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request
1150 * @sp: current sequence in SCR exchange
1151 * @fp: response frame
1152 * @lp_arg: Fibre Channel lport port instance that sent the registration request
1154 * Locking Note: This function will be called without the lport lock
1155 * held, but it will lock, call an _enter_* function or fc_lport_error
1156 * and then unlock the lport.
1158 static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp,
1161 struct fc_lport *lport = lp_arg;
1164 if (fp == ERR_PTR(-FC_EX_CLOSED))
1167 mutex_lock(&lport->lp_mutex);
1169 FC_LPORT_DBG(lport, "Received a SCR response\n");
1171 if (lport->state != LPORT_ST_SCR) {
1172 FC_LPORT_DBG(lport, "Received a SCR response, but in state "
1173 "%s\n", fc_lport_state(lport));
1180 fc_lport_error(lport, fp);
1184 op = fc_frame_payload_op(fp);
1185 if (op == ELS_LS_ACC)
1186 fc_lport_enter_ready(lport);
1188 fc_lport_error(lport, fp);
1193 mutex_unlock(&lport->lp_mutex);
1197 * fc_lport_enter_scr() - Send a State Change Register (SCR) request
1198 * @lport: Fibre Channel local port to register for state changes
1200 * Locking Note: The lport lock is expected to be held before calling
1203 static void fc_lport_enter_scr(struct fc_lport *lport)
1205 struct fc_frame *fp;
1207 FC_LPORT_DBG(lport, "Entered SCR state from %s state\n",
1208 fc_lport_state(lport));
1210 fc_lport_state_enter(lport, LPORT_ST_SCR);
1212 fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr));
1214 fc_lport_error(lport, fp);
1218 if (!lport->tt.elsct_send(lport, NULL, fp, ELS_SCR,
1219 fc_lport_scr_resp, lport, lport->e_d_tov))
1220 fc_lport_error(lport, fp);
1224 * fc_lport_enter_rft_id() - Register FC4-types with the name server
1225 * @lport: Fibre Channel local port to register
1227 * Locking Note: The lport lock is expected to be held before calling
1230 static void fc_lport_enter_rft_id(struct fc_lport *lport)
1232 struct fc_frame *fp;
1233 struct fc_ns_fts *lps;
1236 FC_LPORT_DBG(lport, "Entered RFT_ID state from %s state\n",
1237 fc_lport_state(lport));
1239 fc_lport_state_enter(lport, LPORT_ST_RFT_ID);
1242 i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]);
1244 if (ntohl(lps->ff_type_map[i]) != 0)
1247 /* nothing to register, move on to SCR */
1248 fc_lport_enter_scr(lport);
1252 fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +
1253 sizeof(struct fc_ns_rft));
1255 fc_lport_error(lport, fp);
1259 if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RFT_ID,
1260 fc_lport_rft_id_resp,
1261 lport, lport->e_d_tov))
1262 fc_lport_error(lport, fp);
1266 * fc_rport_enter_rft_id() - Register port name with the name server
1267 * @lport: Fibre Channel local port to register
1269 * Locking Note: The lport lock is expected to be held before calling
1272 static void fc_lport_enter_rpn_id(struct fc_lport *lport)
1274 struct fc_frame *fp;
1276 FC_LPORT_DBG(lport, "Entered RPN_ID state from %s state\n",
1277 fc_lport_state(lport));
1279 fc_lport_state_enter(lport, LPORT_ST_RPN_ID);
1281 fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +
1282 sizeof(struct fc_ns_rn_id));
1284 fc_lport_error(lport, fp);
1288 if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RPN_ID,
1289 fc_lport_rpn_id_resp,
1290 lport, lport->e_d_tov))
1291 fc_lport_error(lport, fp);
1294 static struct fc_rport_operations fc_lport_rport_ops = {
1295 .event_callback = fc_lport_rport_callback,
1299 * fc_rport_enter_dns() - Create a rport to the name server
1300 * @lport: Fibre Channel local port requesting a rport for the name server
1302 * Locking Note: The lport lock is expected to be held before calling
1305 static void fc_lport_enter_dns(struct fc_lport *lport)
1307 struct fc_rport *rport;
1308 struct fc_rport_priv *rdata;
1309 struct fc_rport_identifiers ids;
1311 ids.port_id = FC_FID_DIR_SERV;
1314 ids.roles = FC_RPORT_ROLE_UNKNOWN;
1316 FC_LPORT_DBG(lport, "Entered DNS state from %s state\n",
1317 fc_lport_state(lport));
1319 fc_lport_state_enter(lport, LPORT_ST_DNS);
1321 rport = lport->tt.rport_create(lport, &ids);
1325 rdata = rport->dd_data;
1326 rdata->ops = &fc_lport_rport_ops;
1327 lport->tt.rport_login(rport);
1331 fc_lport_error(lport, NULL);
1335 * fc_lport_timeout() - Handler for the retry_work timer.
1336 * @work: The work struct of the fc_lport
1338 static void fc_lport_timeout(struct work_struct *work)
1340 struct fc_lport *lport =
1341 container_of(work, struct fc_lport,
1344 mutex_lock(&lport->lp_mutex);
1346 switch (lport->state) {
1347 case LPORT_ST_DISABLED:
1348 case LPORT_ST_READY:
1349 case LPORT_ST_RESET:
1352 case LPORT_ST_FLOGI:
1353 fc_lport_enter_flogi(lport);
1356 fc_lport_enter_dns(lport);
1358 case LPORT_ST_RPN_ID:
1359 fc_lport_enter_rpn_id(lport);
1361 case LPORT_ST_RFT_ID:
1362 fc_lport_enter_rft_id(lport);
1365 fc_lport_enter_scr(lport);
1368 fc_lport_enter_logo(lport);
1372 mutex_unlock(&lport->lp_mutex);
1376 * fc_lport_logo_resp() - Handle response to LOGO request
1377 * @sp: current sequence in LOGO exchange
1378 * @fp: response frame
1379 * @lp_arg: Fibre Channel lport port instance that sent the LOGO request
1381 * Locking Note: This function will be called without the lport lock
1382 * held, but it will lock, call an _enter_* function or fc_lport_error
1383 * and then unlock the lport.
1385 static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp,
1388 struct fc_lport *lport = lp_arg;
1391 if (fp == ERR_PTR(-FC_EX_CLOSED))
1394 mutex_lock(&lport->lp_mutex);
1396 FC_LPORT_DBG(lport, "Received a LOGO response\n");
1398 if (lport->state != LPORT_ST_LOGO) {
1399 FC_LPORT_DBG(lport, "Received a LOGO response, but in state "
1400 "%s\n", fc_lport_state(lport));
1407 fc_lport_error(lport, fp);
1411 op = fc_frame_payload_op(fp);
1412 if (op == ELS_LS_ACC)
1413 fc_lport_enter_disabled(lport);
1415 fc_lport_error(lport, fp);
1420 mutex_unlock(&lport->lp_mutex);
1424 * fc_rport_enter_logo() - Logout of the fabric
1425 * @lport: Fibre Channel local port to be logged out
1427 * Locking Note: The lport lock is expected to be held before calling
1430 static void fc_lport_enter_logo(struct fc_lport *lport)
1432 struct fc_frame *fp;
1433 struct fc_els_logo *logo;
1435 FC_LPORT_DBG(lport, "Entered LOGO state from %s state\n",
1436 fc_lport_state(lport));
1438 fc_lport_state_enter(lport, LPORT_ST_LOGO);
1440 fp = fc_frame_alloc(lport, sizeof(*logo));
1442 fc_lport_error(lport, fp);
1446 if (!lport->tt.elsct_send(lport, NULL, fp, ELS_LOGO, fc_lport_logo_resp,
1447 lport, lport->e_d_tov))
1448 fc_lport_error(lport, fp);
1452 * fc_lport_flogi_resp() - Handle response to FLOGI request
1453 * @sp: current sequence in FLOGI exchange
1454 * @fp: response frame
1455 * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request
1457 * Locking Note: This function will be called without the lport lock
1458 * held, but it will lock, call an _enter_* function or fc_lport_error
1459 * and then unlock the lport.
1461 static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
1464 struct fc_lport *lport = lp_arg;
1465 struct fc_frame_header *fh;
1466 struct fc_els_flogi *flp;
1469 unsigned int r_a_tov;
1470 unsigned int e_d_tov;
1473 if (fp == ERR_PTR(-FC_EX_CLOSED))
1476 mutex_lock(&lport->lp_mutex);
1478 FC_LPORT_DBG(lport, "Received a FLOGI response\n");
1480 if (lport->state != LPORT_ST_FLOGI) {
1481 FC_LPORT_DBG(lport, "Received a FLOGI response, but in state "
1482 "%s\n", fc_lport_state(lport));
1489 fc_lport_error(lport, fp);
1493 fh = fc_frame_header_get(fp);
1494 did = ntoh24(fh->fh_d_id);
1495 if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) {
1497 printk(KERN_INFO "libfc: Assigned FID (%6x) in FLOGI response\n",
1499 fc_host_port_id(lport->host) = did;
1501 flp = fc_frame_payload_get(fp, sizeof(*flp));
1503 mfs = ntohs(flp->fl_csp.sp_bb_data) &
1505 if (mfs >= FC_SP_MIN_MAX_PAYLOAD &&
1508 csp_flags = ntohs(flp->fl_csp.sp_features);
1509 r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov);
1510 e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov);
1511 if (csp_flags & FC_SP_FT_EDTR)
1513 if ((csp_flags & FC_SP_FT_FPORT) == 0) {
1514 if (e_d_tov > lport->e_d_tov)
1515 lport->e_d_tov = e_d_tov;
1516 lport->r_a_tov = 2 * e_d_tov;
1517 printk(KERN_INFO "libfc: Port (%6x) entered "
1518 "point to point mode\n", did);
1519 fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id),
1525 lport->e_d_tov = e_d_tov;
1526 lport->r_a_tov = r_a_tov;
1527 fc_host_fabric_name(lport->host) =
1528 get_unaligned_be64(&flp->fl_wwnn);
1529 fc_lport_enter_dns(lport);
1534 csp_flags = ntohs(flp->fl_csp.sp_features);
1535 if ((csp_flags & FC_SP_FT_FPORT) == 0) {
1536 lport->tt.disc_start(fc_lport_disc_callback,
1541 FC_LPORT_DBG(lport, "Bad FLOGI response\n");
1547 mutex_unlock(&lport->lp_mutex);
1551 * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager
1552 * @lport: Fibre Channel local port to be logged in to the fabric
1554 * Locking Note: The lport lock is expected to be held before calling
1557 void fc_lport_enter_flogi(struct fc_lport *lport)
1559 struct fc_frame *fp;
1561 FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n",
1562 fc_lport_state(lport));
1564 fc_lport_state_enter(lport, LPORT_ST_FLOGI);
1566 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
1568 return fc_lport_error(lport, fp);
1570 if (!lport->tt.elsct_send(lport, NULL, fp, ELS_FLOGI,
1571 fc_lport_flogi_resp, lport, lport->e_d_tov))
1572 fc_lport_error(lport, fp);
1575 /* Configure a fc_lport */
1576 int fc_lport_config(struct fc_lport *lport)
1578 INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout);
1579 mutex_init(&lport->lp_mutex);
1581 fc_lport_state_enter(lport, LPORT_ST_DISABLED);
1583 fc_lport_add_fc4_type(lport, FC_TYPE_FCP);
1584 fc_lport_add_fc4_type(lport, FC_TYPE_CT);
1588 EXPORT_SYMBOL(fc_lport_config);
1590 int fc_lport_init(struct fc_lport *lport)
1592 if (!lport->tt.lport_recv)
1593 lport->tt.lport_recv = fc_lport_recv_req;
1595 if (!lport->tt.lport_reset)
1596 lport->tt.lport_reset = fc_lport_reset;
1598 fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
1599 fc_host_node_name(lport->host) = lport->wwnn;
1600 fc_host_port_name(lport->host) = lport->wwpn;
1601 fc_host_supported_classes(lport->host) = FC_COS_CLASS3;
1602 memset(fc_host_supported_fc4s(lport->host), 0,
1603 sizeof(fc_host_supported_fc4s(lport->host)));
1604 fc_host_supported_fc4s(lport->host)[2] = 1;
1605 fc_host_supported_fc4s(lport->host)[7] = 1;
1607 /* This value is also unchanging */
1608 memset(fc_host_active_fc4s(lport->host), 0,
1609 sizeof(fc_host_active_fc4s(lport->host)));
1610 fc_host_active_fc4s(lport->host)[2] = 1;
1611 fc_host_active_fc4s(lport->host)[7] = 1;
1612 fc_host_maxframe_size(lport->host) = lport->mfs;
1613 fc_host_supported_speeds(lport->host) = 0;
1614 if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT)
1615 fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT;
1616 if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT)
1617 fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT;
1619 INIT_LIST_HEAD(&lport->ema_list);
1622 EXPORT_SYMBOL(fc_lport_init);