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 * @rdata: private remote port data
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_priv *rdata,
144 enum fc_rport_event event)
146 struct fc_rport *rport = PRIV_TO_RPORT(rdata);
148 FC_LPORT_DBG(lport, "Received a %d event for port (%6x)\n", event,
152 case RPORT_EV_CREATED:
153 if (rport->port_id == FC_FID_DIR_SERV) {
154 mutex_lock(&lport->lp_mutex);
155 if (lport->state == LPORT_ST_DNS) {
156 lport->dns_rp = rdata;
157 fc_lport_enter_rpn_id(lport);
159 FC_LPORT_DBG(lport, "Received an CREATED event "
160 "on port (%6x) for the directory "
161 "server, but the lport is not "
162 "in the DNS state, it's in the "
163 "%d state", rport->port_id,
165 lport->tt.rport_logoff(rdata);
167 mutex_unlock(&lport->lp_mutex);
169 FC_LPORT_DBG(lport, "Received an event for port (%6x) "
170 "which is not the directory server\n",
174 case RPORT_EV_FAILED:
176 if (rport->port_id == FC_FID_DIR_SERV) {
177 mutex_lock(&lport->lp_mutex);
178 lport->dns_rp = NULL;
179 mutex_unlock(&lport->lp_mutex);
182 FC_LPORT_DBG(lport, "Received an event for port (%6x) "
183 "which is not the directory server\n",
192 * fc_lport_state() - Return a string which represents the lport's state
193 * @lport: The lport whose state is to converted to a string
195 static const char *fc_lport_state(struct fc_lport *lport)
199 cp = fc_lport_state_names[lport->state];
206 * fc_lport_ptp_setup() - Create an rport for point-to-point mode
207 * @lport: The lport to attach the ptp rport to
208 * @fid: The FID of the ptp rport
209 * @remote_wwpn: The WWPN of the ptp rport
210 * @remote_wwnn: The WWNN of the ptp rport
212 static void fc_lport_ptp_setup(struct fc_lport *lport,
213 u32 remote_fid, u64 remote_wwpn,
216 struct fc_rport_identifiers ids;
218 ids.port_id = remote_fid;
219 ids.port_name = remote_wwpn;
220 ids.node_name = remote_wwnn;
221 ids.roles = FC_RPORT_ROLE_UNKNOWN;
224 lport->tt.rport_logoff(lport->ptp_rp);
225 lport->ptp_rp = NULL;
228 lport->ptp_rp = lport->tt.rport_create(lport, &ids);
230 lport->tt.rport_login(lport->ptp_rp);
232 fc_lport_enter_ready(lport);
235 void fc_get_host_port_type(struct Scsi_Host *shost)
237 /* TODO - currently just NPORT */
238 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
240 EXPORT_SYMBOL(fc_get_host_port_type);
242 void fc_get_host_port_state(struct Scsi_Host *shost)
244 struct fc_lport *lp = shost_priv(shost);
247 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
249 fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
251 EXPORT_SYMBOL(fc_get_host_port_state);
253 void fc_get_host_speed(struct Scsi_Host *shost)
255 struct fc_lport *lport = shost_priv(shost);
257 fc_host_speed(shost) = lport->link_speed;
259 EXPORT_SYMBOL(fc_get_host_speed);
261 struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost)
263 struct fc_host_statistics *fcoe_stats;
264 struct fc_lport *lp = shost_priv(shost);
265 struct timespec v0, v1;
268 fcoe_stats = &lp->host_stats;
269 memset(fcoe_stats, 0, sizeof(struct fc_host_statistics));
271 jiffies_to_timespec(jiffies, &v0);
272 jiffies_to_timespec(lp->boot_time, &v1);
273 fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec);
275 for_each_possible_cpu(cpu) {
276 struct fcoe_dev_stats *stats;
278 stats = per_cpu_ptr(lp->dev_stats, cpu);
280 fcoe_stats->tx_frames += stats->TxFrames;
281 fcoe_stats->tx_words += stats->TxWords;
282 fcoe_stats->rx_frames += stats->RxFrames;
283 fcoe_stats->rx_words += stats->RxWords;
284 fcoe_stats->error_frames += stats->ErrorFrames;
285 fcoe_stats->invalid_crc_count += stats->InvalidCRCCount;
286 fcoe_stats->fcp_input_requests += stats->InputRequests;
287 fcoe_stats->fcp_output_requests += stats->OutputRequests;
288 fcoe_stats->fcp_control_requests += stats->ControlRequests;
289 fcoe_stats->fcp_input_megabytes += stats->InputMegabytes;
290 fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes;
291 fcoe_stats->link_failure_count += stats->LinkFailureCount;
293 fcoe_stats->lip_count = -1;
294 fcoe_stats->nos_count = -1;
295 fcoe_stats->loss_of_sync_count = -1;
296 fcoe_stats->loss_of_signal_count = -1;
297 fcoe_stats->prim_seq_protocol_err_count = -1;
298 fcoe_stats->dumped_frames = -1;
301 EXPORT_SYMBOL(fc_get_host_stats);
304 * Fill in FLOGI command for request.
307 fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi,
310 struct fc_els_csp *sp;
311 struct fc_els_cssp *cp;
313 memset(flogi, 0, sizeof(*flogi));
314 flogi->fl_cmd = (u8) op;
315 put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn);
316 put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn);
318 sp->sp_hi_ver = 0x20;
319 sp->sp_lo_ver = 0x20;
320 sp->sp_bb_cred = htons(10); /* this gets set by gateway */
321 sp->sp_bb_data = htons((u16) lport->mfs);
322 cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */
323 cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
324 if (op != ELS_FLOGI) {
325 sp->sp_features = htons(FC_SP_FT_CIRO);
326 sp->sp_tot_seq = htons(255); /* seq. we accept */
327 sp->sp_rel_off = htons(0x1f);
328 sp->sp_e_d_tov = htonl(lport->e_d_tov);
330 cp->cp_rdfs = htons((u16) lport->mfs);
331 cp->cp_con_seq = htons(255);
337 * Add a supported FC-4 type.
339 static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type)
343 mp = &lport->fcts.ff_type_map[type / FC_NS_BPW];
344 *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW));
348 * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report.
349 * @lport: Fibre Channel local port recieving the RLIR
350 * @sp: current sequence in the RLIR exchange
351 * @fp: RLIR request frame
353 * Locking Note: The lport lock is exected to be held before calling
356 static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp,
357 struct fc_lport *lport)
359 FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n",
360 fc_lport_state(lport));
362 lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL);
367 * fc_lport_recv_echo_req() - Handle received ECHO request
368 * @lport: Fibre Channel local port recieving the ECHO
369 * @sp: current sequence in the ECHO exchange
370 * @fp: ECHO request frame
372 * Locking Note: The lport lock is exected to be held before calling
375 static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp,
376 struct fc_lport *lport)
379 struct fc_exch *ep = fc_seq_exch(sp);
385 FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n",
386 fc_lport_state(lport));
388 len = fr_len(in_fp) - sizeof(struct fc_frame_header);
389 pp = fc_frame_payload_get(in_fp, len);
391 if (len < sizeof(__be32))
392 len = sizeof(__be32);
394 fp = fc_frame_alloc(lport, len);
396 dp = fc_frame_payload_get(fp, len);
398 *((u32 *)dp) = htonl(ELS_LS_ACC << 24);
399 sp = lport->tt.seq_start_next(sp);
400 f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ;
401 fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
402 FC_TYPE_ELS, f_ctl, 0);
403 lport->tt.seq_send(lport, sp, fp);
405 fc_frame_free(in_fp);
409 * fc_lport_recv_echo_req() - Handle received Request Node ID data request
410 * @lport: Fibre Channel local port recieving the RNID
411 * @sp: current sequence in the RNID exchange
412 * @fp: RNID request frame
414 * Locking Note: The lport lock is exected to be held before calling
417 static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp,
418 struct fc_lport *lport)
421 struct fc_exch *ep = fc_seq_exch(sp);
422 struct fc_els_rnid *req;
424 struct fc_els_rnid_resp rnid;
425 struct fc_els_rnid_cid cid;
426 struct fc_els_rnid_gen gen;
428 struct fc_seq_els_data rjt_data;
433 FC_LPORT_DBG(lport, "Received RNID request while in state %s\n",
434 fc_lport_state(lport));
436 req = fc_frame_payload_get(in_fp, sizeof(*req));
439 rjt_data.reason = ELS_RJT_LOGIC;
440 rjt_data.explan = ELS_EXPL_NONE;
441 lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);
445 if (fmt != ELS_RNIDF_GEN ||
446 ntohl(lport->rnid_gen.rnid_atype) == 0) {
447 fmt = ELS_RNIDF_NONE; /* nothing to provide */
448 len -= sizeof(rp->gen);
450 fp = fc_frame_alloc(lport, len);
452 rp = fc_frame_payload_get(fp, len);
454 rp->rnid.rnid_cmd = ELS_LS_ACC;
455 rp->rnid.rnid_fmt = fmt;
456 rp->rnid.rnid_cid_len = sizeof(rp->cid);
457 rp->cid.rnid_wwpn = htonll(lport->wwpn);
458 rp->cid.rnid_wwnn = htonll(lport->wwnn);
459 if (fmt == ELS_RNIDF_GEN) {
460 rp->rnid.rnid_sid_len = sizeof(rp->gen);
461 memcpy(&rp->gen, &lport->rnid_gen,
464 sp = lport->tt.seq_start_next(sp);
465 f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ;
466 f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT;
467 fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
468 FC_TYPE_ELS, f_ctl, 0);
469 lport->tt.seq_send(lport, sp, fp);
472 fc_frame_free(in_fp);
476 * fc_lport_recv_adisc_req() - Handle received Address Discovery Request
477 * @lport: Fibre Channel local port recieving the ADISC
478 * @sp: current sequence in the ADISC exchange
479 * @fp: ADISC request frame
481 * Locking Note: The lport lock is expected to be held before calling
484 static void fc_lport_recv_adisc_req(struct fc_seq *sp, struct fc_frame *in_fp,
485 struct fc_lport *lport)
488 struct fc_exch *ep = fc_seq_exch(sp);
489 struct fc_els_adisc *req, *rp;
490 struct fc_seq_els_data rjt_data;
494 FC_LPORT_DBG(lport, "Received ADISC request while in state %s\n",
495 fc_lport_state(lport));
497 req = fc_frame_payload_get(in_fp, sizeof(*req));
500 rjt_data.reason = ELS_RJT_LOGIC;
501 rjt_data.explan = ELS_EXPL_NONE;
502 lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);
505 fp = fc_frame_alloc(lport, len);
507 rp = fc_frame_payload_get(fp, len);
509 rp->adisc_cmd = ELS_LS_ACC;
510 rp->adisc_wwpn = htonll(lport->wwpn);
511 rp->adisc_wwnn = htonll(lport->wwnn);
512 hton24(rp->adisc_port_id,
513 fc_host_port_id(lport->host));
514 sp = lport->tt.seq_start_next(sp);
515 f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ;
516 f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT;
517 fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
518 FC_TYPE_ELS, f_ctl, 0);
519 lport->tt.seq_send(lport, sp, fp);
522 fc_frame_free(in_fp);
526 * fc_lport_recv_logo_req() - Handle received fabric LOGO request
527 * @lport: Fibre Channel local port recieving the LOGO
528 * @sp: current sequence in the LOGO exchange
529 * @fp: LOGO request frame
531 * Locking Note: The lport lock is exected to be held before calling
534 static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp,
535 struct fc_lport *lport)
537 lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL);
538 fc_lport_enter_reset(lport);
543 * fc_fabric_login() - Start the lport state machine
544 * @lport: The lport that should log into the fabric
546 * Locking Note: This function should not be called
547 * with the lport lock held.
549 int fc_fabric_login(struct fc_lport *lport)
553 mutex_lock(&lport->lp_mutex);
554 if (lport->state == LPORT_ST_DISABLED) {
555 fc_lport_enter_reset(lport);
558 mutex_unlock(&lport->lp_mutex);
562 EXPORT_SYMBOL(fc_fabric_login);
565 * fc_linkup() - Handler for transport linkup events
566 * @lport: The lport whose link is up
568 void fc_linkup(struct fc_lport *lport)
570 printk(KERN_INFO "libfc: Link up on port (%6x)\n",
571 fc_host_port_id(lport->host));
573 mutex_lock(&lport->lp_mutex);
574 if (!lport->link_up) {
577 if (lport->state == LPORT_ST_RESET)
578 fc_lport_enter_flogi(lport);
580 mutex_unlock(&lport->lp_mutex);
582 EXPORT_SYMBOL(fc_linkup);
585 * fc_linkdown() - Handler for transport linkdown events
586 * @lport: The lport whose link is down
588 void fc_linkdown(struct fc_lport *lport)
590 mutex_lock(&lport->lp_mutex);
591 printk(KERN_INFO "libfc: Link down on port (%6x)\n",
592 fc_host_port_id(lport->host));
594 if (lport->link_up) {
596 fc_lport_enter_reset(lport);
597 lport->tt.fcp_cleanup(lport);
599 mutex_unlock(&lport->lp_mutex);
601 EXPORT_SYMBOL(fc_linkdown);
604 * fc_fabric_logoff() - Logout of the fabric
605 * @lport: fc_lport pointer to logoff the fabric
608 * 0 for success, -1 for failure
610 int fc_fabric_logoff(struct fc_lport *lport)
612 lport->tt.disc_stop_final(lport);
613 mutex_lock(&lport->lp_mutex);
615 lport->tt.rport_logoff(lport->dns_rp);
616 mutex_unlock(&lport->lp_mutex);
617 lport->tt.rport_flush_queue();
618 mutex_lock(&lport->lp_mutex);
619 fc_lport_enter_logo(lport);
620 mutex_unlock(&lport->lp_mutex);
621 cancel_delayed_work_sync(&lport->retry_work);
624 EXPORT_SYMBOL(fc_fabric_logoff);
627 * fc_lport_destroy() - unregister a fc_lport
628 * @lport: fc_lport pointer to unregister
633 * exit routine for fc_lport instance
634 * clean-up all the allocated memory
635 * and free up other system resources.
638 int fc_lport_destroy(struct fc_lport *lport)
640 mutex_lock(&lport->lp_mutex);
641 lport->state = LPORT_ST_DISABLED;
643 lport->tt.frame_send = fc_frame_drop;
644 mutex_unlock(&lport->lp_mutex);
646 lport->tt.fcp_abort_io(lport);
647 lport->tt.disc_stop_final(lport);
648 lport->tt.exch_mgr_reset(lport, 0, 0);
651 EXPORT_SYMBOL(fc_lport_destroy);
654 * fc_set_mfs() - sets up the mfs for the corresponding fc_lport
655 * @lport: fc_lport pointer to unregister
656 * @mfs: the new mfs for fc_lport
658 * Set mfs for the given fc_lport to the new mfs.
660 * Return: 0 for success
662 int fc_set_mfs(struct fc_lport *lport, u32 mfs)
664 unsigned int old_mfs;
667 mutex_lock(&lport->lp_mutex);
669 old_mfs = lport->mfs;
671 if (mfs >= FC_MIN_MAX_FRAME) {
673 if (mfs > FC_MAX_FRAME)
675 mfs -= sizeof(struct fc_frame_header);
680 if (!rc && mfs < old_mfs)
681 fc_lport_enter_reset(lport);
683 mutex_unlock(&lport->lp_mutex);
687 EXPORT_SYMBOL(fc_set_mfs);
690 * fc_lport_disc_callback() - Callback for discovery events
691 * @lport: FC local port
692 * @event: The discovery event
694 void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event)
697 case DISC_EV_SUCCESS:
698 FC_LPORT_DBG(lport, "Discovery succeeded\n");
701 printk(KERN_ERR "libfc: Discovery failed for port (%6x)\n",
702 fc_host_port_id(lport->host));
703 mutex_lock(&lport->lp_mutex);
704 fc_lport_enter_reset(lport);
705 mutex_unlock(&lport->lp_mutex);
714 * fc_rport_enter_ready() - Enter the ready state and start discovery
715 * @lport: Fibre Channel local port that is ready
717 * Locking Note: The lport lock is expected to be held before calling
720 static void fc_lport_enter_ready(struct fc_lport *lport)
722 FC_LPORT_DBG(lport, "Entered READY from state %s\n",
723 fc_lport_state(lport));
725 fc_lport_state_enter(lport, LPORT_ST_READY);
727 lport->tt.disc_start(fc_lport_disc_callback, lport);
731 * fc_lport_recv_flogi_req() - Receive a FLOGI request
732 * @sp_in: The sequence the FLOGI is on
733 * @rx_fp: The frame the FLOGI is in
734 * @lport: The lport that recieved the request
736 * A received FLOGI request indicates a point-to-point connection.
737 * Accept it with the common service parameters indicating our N port.
738 * Set up to do a PLOGI if we have the higher-number WWPN.
740 * Locking Note: The lport lock is exected to be held before calling
743 static void fc_lport_recv_flogi_req(struct fc_seq *sp_in,
744 struct fc_frame *rx_fp,
745 struct fc_lport *lport)
748 struct fc_frame_header *fh;
751 struct fc_els_flogi *flp;
752 struct fc_els_flogi *new_flp;
758 FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n",
759 fc_lport_state(lport));
761 fh = fc_frame_header_get(rx_fp);
762 remote_fid = ntoh24(fh->fh_s_id);
763 flp = fc_frame_payload_get(rx_fp, sizeof(*flp));
766 remote_wwpn = get_unaligned_be64(&flp->fl_wwpn);
767 if (remote_wwpn == lport->wwpn) {
768 printk(KERN_WARNING "libfc: Received FLOGI from port "
769 "with same WWPN %llx\n", remote_wwpn);
772 FC_LPORT_DBG(lport, "FLOGI from port WWPN %llx\n", remote_wwpn);
775 * XXX what is the right thing to do for FIDs?
776 * The originator might expect our S_ID to be 0xfffffe.
777 * But if so, both of us could end up with the same FID.
779 local_fid = FC_LOCAL_PTP_FID_LO;
780 if (remote_wwpn < lport->wwpn) {
781 local_fid = FC_LOCAL_PTP_FID_HI;
782 if (!remote_fid || remote_fid == local_fid)
783 remote_fid = FC_LOCAL_PTP_FID_LO;
784 } else if (!remote_fid) {
785 remote_fid = FC_LOCAL_PTP_FID_HI;
788 fc_host_port_id(lport->host) = local_fid;
790 fp = fc_frame_alloc(lport, sizeof(*flp));
792 sp = lport->tt.seq_start_next(fr_seq(rx_fp));
793 new_flp = fc_frame_payload_get(fp, sizeof(*flp));
794 fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI);
795 new_flp->fl_cmd = (u8) ELS_LS_ACC;
798 * Send the response. If this fails, the originator should
799 * repeat the sequence.
801 f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ;
802 ep = fc_seq_exch(sp);
803 fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
804 FC_TYPE_ELS, f_ctl, 0);
805 lport->tt.seq_send(lport, sp, fp);
808 fc_lport_error(lport, fp);
810 fc_lport_ptp_setup(lport, remote_fid, remote_wwpn,
811 get_unaligned_be64(&flp->fl_wwnn));
813 lport->tt.disc_start(fc_lport_disc_callback, lport);
817 fc_frame_free(rx_fp);
821 * fc_lport_recv_req() - The generic lport request handler
822 * @lport: The lport that received the request
823 * @sp: The sequence the request is on
824 * @fp: The frame the request is in
826 * This function will see if the lport handles the request or
827 * if an rport should handle the request.
829 * Locking Note: This function should not be called with the lport
830 * lock held becuase it will grab the lock.
832 static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp,
835 struct fc_frame_header *fh = fc_frame_header_get(fp);
836 void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *);
837 struct fc_rport_priv *rdata;
840 struct fc_seq_els_data rjt_data;
842 mutex_lock(&lport->lp_mutex);
845 * Handle special ELS cases like FLOGI, LOGO, and
846 * RSCN here. These don't require a session.
847 * Even if we had a session, it might not be ready.
851 else if (fh->fh_type == FC_TYPE_ELS &&
852 fh->fh_r_ctl == FC_RCTL_ELS_REQ) {
857 switch (fc_frame_payload_op(fp)) {
859 recv = fc_lport_recv_flogi_req;
862 fh = fc_frame_header_get(fp);
863 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI)
864 recv = fc_lport_recv_logo_req;
867 recv = lport->tt.disc_recv_req;
870 recv = fc_lport_recv_echo_req;
873 recv = fc_lport_recv_rlir_req;
876 recv = fc_lport_recv_rnid_req;
879 recv = fc_lport_recv_adisc_req;
888 * If this is a new incoming PLOGI, we won't find it.
890 s_id = ntoh24(fh->fh_s_id);
891 d_id = ntoh24(fh->fh_d_id);
893 rdata = lport->tt.rport_lookup(lport, s_id);
895 lport->tt.rport_recv_req(sp, fp, rdata);
898 rjt_data.reason = ELS_RJT_UNAB;
899 rjt_data.explan = ELS_EXPL_NONE;
900 lport->tt.seq_els_rsp_send(sp,
907 FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n",
911 mutex_unlock(&lport->lp_mutex);
914 * The common exch_done for all request may not be good
915 * if any request requires longer hold on exhange. XXX
917 lport->tt.exch_done(sp);
921 * fc_lport_reset() - Reset an lport
922 * @lport: The lport which should be reset
924 * Locking Note: This functions should not be called with the
927 int fc_lport_reset(struct fc_lport *lport)
929 cancel_delayed_work_sync(&lport->retry_work);
930 mutex_lock(&lport->lp_mutex);
931 fc_lport_enter_reset(lport);
932 mutex_unlock(&lport->lp_mutex);
935 EXPORT_SYMBOL(fc_lport_reset);
938 * fc_lport_reset_locked() - Reset the local port
939 * @lport: Fibre Channel local port to be reset
941 * Locking Note: The lport lock is expected to be held before calling
944 static void fc_lport_reset_locked(struct fc_lport *lport)
947 lport->tt.rport_logoff(lport->dns_rp);
950 lport->tt.rport_logoff(lport->ptp_rp);
951 lport->ptp_rp = NULL;
954 lport->tt.disc_stop(lport);
956 lport->tt.exch_mgr_reset(lport, 0, 0);
957 fc_host_fabric_name(lport->host) = 0;
958 fc_host_port_id(lport->host) = 0;
962 * fc_lport_enter_reset() - Reset the local port
963 * @lport: Fibre Channel local port to be reset
965 * Locking Note: The lport lock is expected to be held before calling
968 static void fc_lport_enter_reset(struct fc_lport *lport)
970 FC_LPORT_DBG(lport, "Entered RESET state from %s state\n",
971 fc_lport_state(lport));
973 fc_lport_state_enter(lport, LPORT_ST_RESET);
974 fc_lport_reset_locked(lport);
976 fc_lport_enter_flogi(lport);
980 * fc_lport_enter_disabled() - disable the local port
981 * @lport: Fibre Channel local port to be reset
983 * Locking Note: The lport lock is expected to be held before calling
986 static void fc_lport_enter_disabled(struct fc_lport *lport)
988 FC_LPORT_DBG(lport, "Entered disabled state from %s state\n",
989 fc_lport_state(lport));
991 fc_lport_state_enter(lport, LPORT_ST_DISABLED);
992 fc_lport_reset_locked(lport);
996 * fc_lport_error() - Handler for any errors
997 * @lport: The fc_lport object
998 * @fp: The frame pointer
1000 * If the error was caused by a resource allocation failure
1001 * then wait for half a second and retry, otherwise retry
1002 * after the e_d_tov time.
1004 static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp)
1006 unsigned long delay = 0;
1007 FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n",
1008 PTR_ERR(fp), fc_lport_state(lport),
1009 lport->retry_count);
1011 if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) {
1013 * Memory allocation failure, or the exchange timed out.
1016 if (lport->retry_count < lport->max_retry_count) {
1017 lport->retry_count++;
1019 delay = msecs_to_jiffies(500);
1021 delay = msecs_to_jiffies(lport->e_d_tov);
1023 schedule_delayed_work(&lport->retry_work, delay);
1025 switch (lport->state) {
1026 case LPORT_ST_DISABLED:
1027 case LPORT_ST_READY:
1028 case LPORT_ST_RESET:
1029 case LPORT_ST_RPN_ID:
1030 case LPORT_ST_RFT_ID:
1033 case LPORT_ST_FLOGI:
1035 fc_lport_enter_reset(lport);
1043 * fc_lport_rft_id_resp() - Handle response to Register Fibre
1044 * Channel Types by ID (RPN_ID) request
1045 * @sp: current sequence in RPN_ID exchange
1046 * @fp: response frame
1047 * @lp_arg: Fibre Channel host port instance
1049 * Locking Note: This function will be called without the lport lock
1050 * held, but it will lock, call an _enter_* function or fc_lport_error
1051 * and then unlock the lport.
1053 static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp,
1056 struct fc_lport *lport = lp_arg;
1057 struct fc_frame_header *fh;
1058 struct fc_ct_hdr *ct;
1060 if (fp == ERR_PTR(-FC_EX_CLOSED))
1063 mutex_lock(&lport->lp_mutex);
1065 FC_LPORT_DBG(lport, "Received a RFT_ID response\n");
1067 if (lport->state != LPORT_ST_RFT_ID) {
1068 FC_LPORT_DBG(lport, "Received a RFT_ID response, but in state "
1069 "%s\n", fc_lport_state(lport));
1076 fc_lport_error(lport, fp);
1080 fh = fc_frame_header_get(fp);
1081 ct = fc_frame_payload_get(fp, sizeof(*ct));
1083 if (fh && ct && fh->fh_type == FC_TYPE_CT &&
1084 ct->ct_fs_type == FC_FST_DIR &&
1085 ct->ct_fs_subtype == FC_NS_SUBTYPE &&
1086 ntohs(ct->ct_cmd) == FC_FS_ACC)
1087 fc_lport_enter_scr(lport);
1089 fc_lport_error(lport, fp);
1093 mutex_unlock(&lport->lp_mutex);
1097 * fc_lport_rpn_id_resp() - Handle response to Register Port
1098 * Name by ID (RPN_ID) request
1099 * @sp: current sequence in RPN_ID exchange
1100 * @fp: response frame
1101 * @lp_arg: Fibre Channel host port instance
1103 * Locking Note: This function will be called without the lport lock
1104 * held, but it will lock, call an _enter_* function or fc_lport_error
1105 * and then unlock the lport.
1107 static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp,
1110 struct fc_lport *lport = lp_arg;
1111 struct fc_frame_header *fh;
1112 struct fc_ct_hdr *ct;
1114 if (fp == ERR_PTR(-FC_EX_CLOSED))
1117 mutex_lock(&lport->lp_mutex);
1119 FC_LPORT_DBG(lport, "Received a RPN_ID response\n");
1121 if (lport->state != LPORT_ST_RPN_ID) {
1122 FC_LPORT_DBG(lport, "Received a RPN_ID response, but in state "
1123 "%s\n", fc_lport_state(lport));
1130 fc_lport_error(lport, fp);
1134 fh = fc_frame_header_get(fp);
1135 ct = fc_frame_payload_get(fp, sizeof(*ct));
1136 if (fh && ct && fh->fh_type == FC_TYPE_CT &&
1137 ct->ct_fs_type == FC_FST_DIR &&
1138 ct->ct_fs_subtype == FC_NS_SUBTYPE &&
1139 ntohs(ct->ct_cmd) == FC_FS_ACC)
1140 fc_lport_enter_rft_id(lport);
1142 fc_lport_error(lport, fp);
1147 mutex_unlock(&lport->lp_mutex);
1151 * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request
1152 * @sp: current sequence in SCR exchange
1153 * @fp: response frame
1154 * @lp_arg: Fibre Channel lport port instance that sent the registration request
1156 * Locking Note: This function will be called without the lport lock
1157 * held, but it will lock, call an _enter_* function or fc_lport_error
1158 * and then unlock the lport.
1160 static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp,
1163 struct fc_lport *lport = lp_arg;
1166 if (fp == ERR_PTR(-FC_EX_CLOSED))
1169 mutex_lock(&lport->lp_mutex);
1171 FC_LPORT_DBG(lport, "Received a SCR response\n");
1173 if (lport->state != LPORT_ST_SCR) {
1174 FC_LPORT_DBG(lport, "Received a SCR response, but in state "
1175 "%s\n", fc_lport_state(lport));
1182 fc_lport_error(lport, fp);
1186 op = fc_frame_payload_op(fp);
1187 if (op == ELS_LS_ACC)
1188 fc_lport_enter_ready(lport);
1190 fc_lport_error(lport, fp);
1195 mutex_unlock(&lport->lp_mutex);
1199 * fc_lport_enter_scr() - Send a State Change Register (SCR) request
1200 * @lport: Fibre Channel local port to register for state changes
1202 * Locking Note: The lport lock is expected to be held before calling
1205 static void fc_lport_enter_scr(struct fc_lport *lport)
1207 struct fc_frame *fp;
1209 FC_LPORT_DBG(lport, "Entered SCR state from %s state\n",
1210 fc_lport_state(lport));
1212 fc_lport_state_enter(lport, LPORT_ST_SCR);
1214 fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr));
1216 fc_lport_error(lport, fp);
1220 if (!lport->tt.elsct_send(lport, NULL, fp, ELS_SCR,
1221 fc_lport_scr_resp, lport, lport->e_d_tov))
1222 fc_lport_error(lport, fp);
1226 * fc_lport_enter_rft_id() - Register FC4-types with the name server
1227 * @lport: Fibre Channel local port to register
1229 * Locking Note: The lport lock is expected to be held before calling
1232 static void fc_lport_enter_rft_id(struct fc_lport *lport)
1234 struct fc_frame *fp;
1235 struct fc_ns_fts *lps;
1238 FC_LPORT_DBG(lport, "Entered RFT_ID state from %s state\n",
1239 fc_lport_state(lport));
1241 fc_lport_state_enter(lport, LPORT_ST_RFT_ID);
1244 i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]);
1246 if (ntohl(lps->ff_type_map[i]) != 0)
1249 /* nothing to register, move on to SCR */
1250 fc_lport_enter_scr(lport);
1254 fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +
1255 sizeof(struct fc_ns_rft));
1257 fc_lport_error(lport, fp);
1261 if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RFT_ID,
1262 fc_lport_rft_id_resp,
1263 lport, lport->e_d_tov))
1264 fc_lport_error(lport, fp);
1268 * fc_rport_enter_rft_id() - Register port name with the name server
1269 * @lport: Fibre Channel local port to register
1271 * Locking Note: The lport lock is expected to be held before calling
1274 static void fc_lport_enter_rpn_id(struct fc_lport *lport)
1276 struct fc_frame *fp;
1278 FC_LPORT_DBG(lport, "Entered RPN_ID state from %s state\n",
1279 fc_lport_state(lport));
1281 fc_lport_state_enter(lport, LPORT_ST_RPN_ID);
1283 fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +
1284 sizeof(struct fc_ns_rn_id));
1286 fc_lport_error(lport, fp);
1290 if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RPN_ID,
1291 fc_lport_rpn_id_resp,
1292 lport, lport->e_d_tov))
1293 fc_lport_error(lport, fp);
1296 static struct fc_rport_operations fc_lport_rport_ops = {
1297 .event_callback = fc_lport_rport_callback,
1301 * fc_rport_enter_dns() - Create a rport to the name server
1302 * @lport: Fibre Channel local port requesting a rport for the name server
1304 * Locking Note: The lport lock is expected to be held before calling
1307 static void fc_lport_enter_dns(struct fc_lport *lport)
1309 struct fc_rport_priv *rdata;
1310 struct fc_rport_identifiers ids;
1312 ids.port_id = FC_FID_DIR_SERV;
1315 ids.roles = FC_RPORT_ROLE_UNKNOWN;
1317 FC_LPORT_DBG(lport, "Entered DNS state from %s state\n",
1318 fc_lport_state(lport));
1320 fc_lport_state_enter(lport, LPORT_ST_DNS);
1322 rdata = lport->tt.rport_create(lport, &ids);
1326 rdata->ops = &fc_lport_rport_ops;
1327 lport->tt.rport_login(rdata);
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);