1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
23 */
24
25 #include <sys/sysmacros.h>
26 #include <sys/conf.h>
27 #include <sys/file.h>
28 #include <sys/ddi.h>
29 #include <sys/sunddi.h>
30 #include <sys/modctl.h>
31 #include <sys/scsi/scsi.h>
32 #include <sys/scsi/impl/scsi_reset_notify.h>
33 #include <sys/disp.h>
34 #include <sys/byteorder.h>
35 #include <sys/varargs.h>
36 #include <sys/atomic.h>
37 #include <sys/sdt.h>
38
39 #include <sys/stmf.h>
40 #include <sys/stmf_ioctl.h>
41 #include <sys/portif.h>
42 #include <sys/fct.h>
43 #include <sys/fctio.h>
44
45 #include "fct_impl.h"
46 #include "discovery.h"
47
48 disc_action_t fct_handle_local_port_event(fct_i_local_port_t *iport);
49 disc_action_t fct_walk_discovery_queue(fct_i_local_port_t *iport);
50 disc_action_t fct_process_els(fct_i_local_port_t *iport,
51 fct_i_remote_port_t *irp);
52 fct_status_t fct_send_accrjt(fct_cmd_t *cmd, uint8_t accrjt,
53 uint8_t reason, uint8_t expl);
54 disc_action_t fct_link_init_complete(fct_i_local_port_t *iport);
55 fct_status_t fct_complete_previous_li_cmd(fct_i_local_port_t *iport);
56 fct_status_t fct_sol_plogi(fct_i_local_port_t *iport, uint32_t id,
57 fct_cmd_t **ret_ppcmd, int implicit);
58 fct_status_t fct_sol_ct(fct_i_local_port_t *iport, uint32_t id,
59 fct_cmd_t **ret_ppcmd, uint16_t opcode);
60 fct_status_t fct_ns_scr(fct_i_local_port_t *iport, uint32_t id,
61 fct_cmd_t **ret_ppcmd);
62 static disc_action_t fct_check_cmdlist(fct_i_local_port_t *iport);
63 static disc_action_t fct_check_solcmd_queue(fct_i_local_port_t *iport);
64 static void fct_rscn_verify(fct_i_local_port_t *iport,
65 uint8_t *rscn_req_payload, uint32_t rscn_req_size);
66 void fct_gid_cb(fct_i_cmd_t *icmd);
67
68 char *fct_els_names[] = { 0, "LS_RJT", "ACC", "PLOGI", "FLOGI", "LOGO",
69 "ABTX", "RCS", "RES", "RSS", "RSI", "ESTS",
70 "ESTC", "ADVC", "RTV", "RLS",
71 /* 0x10 */ "ECHO", "TEST", "RRQ", "REC", "SRR", 0, 0,
72 0, 0, 0, 0, 0, 0, 0, 0, 0,
73 /* 0x20 */ "PRLI", "PRLO", "SCN", "TPLS",
74 "TPRLO", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
75 /* 0x30 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
76 /* 0x40 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
77 /* 0x50 */ "PDISC", "FDISC", "ADISC", "RNC", "FARP",
78 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
79 /* 0x60 */ "FAN", "RSCN", "SCR", 0, 0, 0, 0, 0, 0, 0, 0,
80 0, 0, 0, 0, 0,
81 /* 0x70 */ "LINIT", "LPC", "LSTS", 0, 0, 0, 0, 0,
82 "RNID", "RLIR", "LIRR", 0, 0, 0, 0, 0
83 };
84
85 extern uint32_t fct_rscn_options;
86
87 /*
88 * NOTE: if anybody drops the iport_worker_lock then they should not return
89 * DISC_ACTION_NO_WORK. Which also means, dont drop the lock if you have
90 * nothing to do. Or else return DISC_ACTION_RESCAN or DISC_ACTION_DELAY_RESCAN.
91 * But you cannot be infinitly returning those so have some logic to
92 * determine that there is nothing to do without dropping the lock.
93 */
94 void
fct_port_worker(void * arg)95 fct_port_worker(void *arg)
96 {
97 fct_local_port_t *port = (fct_local_port_t *)arg;
98 fct_i_local_port_t *iport = (fct_i_local_port_t *)
99 port->port_fct_private;
100 disc_action_t suggested_action;
101 clock_t dl, short_delay, long_delay;
102 int64_t tmp_delay;
103
104 iport->iport_cmdcheck_clock = ddi_get_lbolt() +
105 drv_usectohz(FCT_CMDLIST_CHECK_SECONDS * 1000000);
106 short_delay = drv_usectohz(10000);
107 long_delay = drv_usectohz(1000000);
108
109 stmf_trace(iport->iport_alias, "iport is %p", iport);
110 /* Discovery loop */
111 mutex_enter(&iport->iport_worker_lock);
112 atomic_or_32(&iport->iport_flags, IPORT_WORKER_RUNNING);
113 while ((iport->iport_flags & IPORT_TERMINATE_WORKER) == 0) {
114 suggested_action = DISC_ACTION_NO_WORK;
115 /*
116 * Local port events are of the highest prioriy
117 */
118 if (iport->iport_event_head) {
119 suggested_action |= fct_handle_local_port_event(iport);
120 }
121
122 /*
123 * We could post solicited ELSes to discovery queue.
124 * solicited CT will be processed inside fct_check_solcmd_queue
125 */
126 if (iport->iport_solcmd_queue) {
127 suggested_action |= fct_check_solcmd_queue(iport);
128 }
129
130 /*
131 * All solicited and unsolicited ELS will be handled here
132 */
133 if (iport->iport_rpwe_head) {
134 suggested_action |= fct_walk_discovery_queue(iport);
135 }
136
137 /*
138 * We only process it when there's no outstanding link init CMD
139 */
140 if ((iport->iport_link_state == PORT_STATE_LINK_INIT_START) &&
141 !(iport->iport_li_state & (LI_STATE_FLAG_CMD_WAITING |
142 LI_STATE_FLAG_NO_LI_YET))) {
143 suggested_action |= fct_process_link_init(iport);
144 }
145
146 /*
147 * We process cmd aborting in the end
148 */
149 if (iport->iport_abort_queue) {
150 suggested_action |= fct_cmd_terminator(iport);
151 }
152
153 /*
154 * Check cmd max/free
155 */
156 if (iport->iport_cmdcheck_clock <= ddi_get_lbolt()) {
157 suggested_action |= fct_check_cmdlist(iport);
158 iport->iport_cmdcheck_clock = ddi_get_lbolt() +
159 drv_usectohz(FCT_CMDLIST_CHECK_SECONDS * 1000000);
160 iport->iport_max_active_ncmds = 0;
161 }
162
163 if (iport->iport_offline_prstate != FCT_OPR_DONE) {
164 suggested_action |= fct_handle_port_offline(iport);
165 }
166
167 if (suggested_action & DISC_ACTION_RESCAN) {
168 continue;
169 } else if (suggested_action & DISC_ACTION_DELAY_RESCAN) {
170 /*
171 * This is not very optimum as whoever returned
172 * DISC_ACTION_DELAY_RESCAN must have dropped the lock
173 * and more things might have queued up. But since
174 * we are only doing small delays, it only delays
175 * things by a few ms, which is okey.
176 */
177 if (suggested_action & DISC_ACTION_USE_SHORT_DELAY) {
178 dl = short_delay;
179 } else {
180 dl = long_delay;
181 }
182 atomic_or_32(&iport->iport_flags,
183 IPORT_WORKER_DOING_TIMEDWAIT);
184 (void) cv_reltimedwait(&iport->iport_worker_cv,
185 &iport->iport_worker_lock, dl, TR_CLOCK_TICK);
186 atomic_and_32(&iport->iport_flags,
187 ~IPORT_WORKER_DOING_TIMEDWAIT);
188 } else {
189 atomic_or_32(&iport->iport_flags,
190 IPORT_WORKER_DOING_WAIT);
191 tmp_delay = (int64_t)(iport->iport_cmdcheck_clock -
192 ddi_get_lbolt());
193 if (tmp_delay < 0) {
194 tmp_delay = (int64_t)short_delay;
195 }
196 (void) cv_reltimedwait(&iport->iport_worker_cv,
197 &iport->iport_worker_lock, (clock_t)tmp_delay,
198 TR_CLOCK_TICK);
199 atomic_and_32(&iport->iport_flags,
200 ~IPORT_WORKER_DOING_WAIT);
201 }
202 }
203
204 atomic_and_32(&iport->iport_flags, ~IPORT_WORKER_RUNNING);
205 mutex_exit(&iport->iport_worker_lock);
206 }
207
208 static char *topologies[] = { "Unknown", "Direct Pt-to-Pt", "Private Loop",
209 "Unknown", "Unknown", "Fabric Pt-to-Pt",
210 "Public Loop" };
211
212 void
fct_li_to_txt(fct_link_info_t * li,char * topology,char * speed)213 fct_li_to_txt(fct_link_info_t *li, char *topology, char *speed)
214 {
215 uint8_t s = li->port_speed;
216
217 if (li->port_topology > PORT_TOPOLOGY_PUBLIC_LOOP) {
218 (void) sprintf(topology, "Invalid %02x", li->port_topology);
219 } else {
220 (void) strcpy(topology, topologies[li->port_topology]);
221 }
222
223 if ((s == 0) || ((s & 0xf00) != 0) || !ISP2(s)) {
224 speed[0] = '?';
225 } else if (s == PORT_SPEED_10G) {
226 speed[0] = '1';
227 speed[1] = '0';
228 speed[2] = 'G';
229 speed[3] = 0;
230 } else {
231 speed[0] = '0' + li->port_speed;
232 speed[1] = 'G';
233 speed[2] = 0;
234 }
235 }
236
237 /*
238 * discovery lock held.
239 * XXX: Implement command cleanup upon Link down.
240 * XXX: Implement a clean start and FC-GS registrations upon Link up.
241 *
242 * ================ Local Port State Machine ============
243 * <hba fatal> <Link up>---|
244 * | v
245 * | <Start>--->[LINK_DOWN]--->[LINK_INIT_START]--->[LINK_INIT_DONE]
246 * | ^ ^ ^ | |
247 * | |---| | |--<Link down> |-| |---><Link Reset><--|
248 * | | | v | v
249 * |->[FATAL_CLEANING] [LINK_DOWN_CLEANING]--->[LINK_UP_CLEANING]
250 * ^
251 * |--<Link up>
252 * =======================================================
253 * An explicit port_online() is only allowed in LINK_DOWN state.
254 * An explicit port_offline() is only allowed in LINKDOWN and
255 * LINK_INIT_DONE state.
256 */
257 disc_action_t
fct_handle_local_port_event(fct_i_local_port_t * iport)258 fct_handle_local_port_event(fct_i_local_port_t *iport)
259 {
260 disc_action_t ret = DISC_ACTION_RESCAN;
261 fct_i_event_t *in;
262 uint16_t old_state, new_state, new_bits;
263 int dqueue_and_free = 1;
264 int retry_implicit_logo = 0;
265
266 if (iport->iport_event_head == NULL)
267 return (DISC_ACTION_NO_WORK);
268 in = iport->iport_event_head;
269 mutex_exit(&iport->iport_worker_lock);
270
271 rw_enter(&iport->iport_lock, RW_WRITER);
272
273 if (in->event_type == FCT_EVENT_LINK_UP) {
274 DTRACE_FC_1(link__up, fct_i_local_port_t, iport);
275 } else if (in->event_type == FCT_EVENT_LINK_DOWN) {
276 DTRACE_FC_1(link__down, fct_i_local_port_t, iport);
277 }
278
279 /* Calculate new state */
280 new_state = iport->iport_link_state;
281
282 if (in->event_type == FCT_EVENT_LINK_DOWN) {
283 new_state = PORT_STATE_LINK_DOWN_CLEANING;
284 } else if (in->event_type == FCT_EVENT_LINK_UP) {
285 if (iport->iport_link_state == PORT_STATE_LINK_DOWN_CLEANING)
286 new_state = PORT_STATE_LINK_UP_CLEANING;
287 else if (iport->iport_link_state == PORT_STATE_LINK_DOWN)
288 new_state = PORT_STATE_LINK_INIT_START;
289 else { /* This should not happen */
290 stmf_trace(iport->iport_alias,
291 "Link up received when link state was"
292 "%x, Ignoring...", iport->iport_link_state);
293 }
294 } else if (in->event_type == FCT_I_EVENT_CLEANUP_POLL) {
295 if (!fct_local_port_cleanup_done(iport)) {
296 if (iport->iport_link_cleanup_retry >= 3) {
297 iport->iport_link_cleanup_retry = 0;
298 retry_implicit_logo = 1;
299 } else {
300 iport->iport_link_cleanup_retry++;
301 }
302 dqueue_and_free = 0;
303 ret = DISC_ACTION_DELAY_RESCAN;
304 } else {
305 if (iport->iport_link_state ==
306 PORT_STATE_LINK_DOWN_CLEANING) {
307 new_state = PORT_STATE_LINK_DOWN;
308 } else if (iport->iport_link_state ==
309 PORT_STATE_LINK_UP_CLEANING) {
310 new_state = PORT_STATE_LINK_INIT_START;
311 } else { /* This should not have happened */
312 cmn_err(CE_WARN, "port state changed to %x "
313 "during cleanup", iport->iport_link_state);
314 new_state = PORT_STATE_LINK_DOWN;
315 }
316 }
317 } else if (in->event_type == FCT_EVENT_LINK_RESET) {
318 /* Link reset is only allowed when we are Online */
319 if (iport->iport_link_state & S_LINK_ONLINE) {
320 new_state = PORT_STATE_LINK_UP_CLEANING;
321 }
322 } else if (in->event_type == FCT_I_EVENT_LINK_INIT_DONE) {
323 if (iport->iport_link_state == PORT_STATE_LINK_INIT_START) {
324 new_state = PORT_STATE_LINK_INIT_DONE;
325 iport->iport_li_state = LI_STATE_START;
326 }
327 } else {
328 ASSERT(0);
329 }
330 new_bits = iport->iport_link_state ^
331 (iport->iport_link_state | new_state);
332 old_state = iport->iport_link_state;
333 iport->iport_link_state = new_state;
334 rw_exit(&iport->iport_lock);
335
336 stmf_trace(iport->iport_alias, "port state change from %x to %x",
337 old_state, new_state);
338
339 if (new_bits & S_PORT_CLEANUP) {
340 (void) fct_implicitly_logo_all(iport, 0);
341 fct_handle_event(iport->iport_port,
342 FCT_I_EVENT_CLEANUP_POLL, 0, 0);
343 }
344 if (retry_implicit_logo) {
345 (void) fct_implicitly_logo_all(iport, 1);
346 }
347 if (new_bits & S_INIT_LINK) {
348 fct_link_info_t *li = &iport->iport_link_info;
349 fct_status_t li_ret;
350 iport->iport_li_state |= LI_STATE_FLAG_NO_LI_YET;
351 bzero(li, sizeof (*li));
352 if ((li_ret = iport->iport_port->port_get_link_info(
353 iport->iport_port, li)) != FCT_SUCCESS) {
354 stmf_trace(iport->iport_alias, "iport-%p: "
355 "port_get_link_info failed, ret %llx, forcing "
356 "link down.", iport, li_ret);
357 fct_handle_event(iport->iport_port,
358 FCT_EVENT_LINK_DOWN, 0, 0);
359 } else {
360 iport->iport_login_retry = 0;
361 /* This will reset LI_STATE_FLAG_NO_LI_YET */
362 iport->iport_li_state = LI_STATE_START;
363 atomic_or_32(&iport->iport_flags,
364 IPORT_ALLOW_UNSOL_FLOGI);
365 }
366 fct_log_local_port_event(iport->iport_port,
367 ESC_SUNFC_PORT_ONLINE);
368 } else if (new_bits & S_RCVD_LINK_DOWN) {
369 fct_log_local_port_event(iport->iport_port,
370 ESC_SUNFC_PORT_OFFLINE);
371 }
372
373 mutex_enter(&iport->iport_worker_lock);
374 if (in && dqueue_and_free) {
375 iport->iport_event_head = in->event_next;
376 if (iport->iport_event_head == NULL)
377 iport->iport_event_tail = NULL;
378 kmem_free(in, sizeof (*in));
379 }
380 return (ret);
381 }
382
383 int
fct_lport_has_bigger_wwn(fct_i_local_port_t * iport)384 fct_lport_has_bigger_wwn(fct_i_local_port_t *iport)
385 {
386 uint8_t *l, *r;
387 int i;
388 uint64_t wl, wr;
389
390 l = iport->iport_port->port_pwwn;
391 r = iport->iport_link_info.port_rpwwn;
392
393 for (i = 0, wl = 0; i < 8; i++) {
394 wl <<= 8;
395 wl |= l[i];
396 }
397 for (i = 0, wr = 0; i < 8; i++) {
398 wr <<= 8;
399 wr |= r[i];
400 }
401
402 if (wl > wr) {
403 return (1);
404 }
405
406 return (0);
407 }
408
409 void
fct_do_flogi(fct_i_local_port_t * iport)410 fct_do_flogi(fct_i_local_port_t *iport)
411 {
412 fct_flogi_xchg_t fx;
413 fct_status_t ret;
414 int force_link_down = 0;
415 int do_retry = 0;
416
417 DTRACE_FC_1(fabric__login__start, fct_i_local_port_t, iport);
418
419 bzero(&fx, sizeof (fx));
420 fx.fx_op = ELS_OP_FLOGI;
421 if (iport->iport_login_retry == 0) {
422 fx.fx_sec_timeout = 2;
423 } else {
424 fx.fx_sec_timeout = 5;
425 }
426 if (iport->iport_link_info.port_topology & PORT_TOPOLOGY_PRIVATE_LOOP) {
427 fx.fx_sid = iport->iport_link_info.portid & 0xFF;
428 }
429 fx.fx_did = 0xFFFFFE;
430 bcopy(iport->iport_port->port_nwwn, fx.fx_nwwn, 8);
431 bcopy(iport->iport_port->port_pwwn, fx.fx_pwwn, 8);
432 mutex_exit(&iport->iport_worker_lock);
433 ret = iport->iport_port->port_flogi_xchg(iport->iport_port, &fx);
434 mutex_enter(&iport->iport_worker_lock);
435 if (IPORT_FLOGI_DONE(iport)) {
436 /* The unsolicited path finished it. */
437 goto done;
438 }
439 if (ret == FCT_NOT_FOUND) {
440 if (iport->iport_link_info.port_topology &
441 PORT_TOPOLOGY_PRIVATE_LOOP) {
442 /* This is a private loop. There is no switch. */
443 iport->iport_link_info.port_no_fct_flogi = 1;
444 goto done;
445 }
446 /*
447 * This is really an error. This means we cannot init the
448 * link. Lets force the link to go down.
449 */
450 force_link_down = 1;
451 } else if ((ret == FCT_SUCCESS) && (fx.fx_op == ELS_OP_LSRJT)) {
452 if ((fx.fx_rjt_reason == 5) || (fx.fx_rjt_reason == 0xe) ||
453 ((fx.fx_rjt_reason == 9) && (fx.fx_rjt_expl == 0x29))) {
454 do_retry = 1;
455 } else {
456 force_link_down = 1;
457 }
458 } else if (ret == STMF_TIMEOUT) {
459 do_retry = 1;
460 } else if (ret != FCT_SUCCESS) {
461 force_link_down = 1;
462 }
463
464 if (do_retry) {
465 iport->iport_login_retry++;
466 if (iport->iport_login_retry >= 5)
467 force_link_down = 1;
468 goto done;
469 }
470
471 if (force_link_down) {
472 stmf_trace(iport->iport_alias, "iport-%p: flogi xchg failed. "
473 "Forcing link down, ret=%llx login_retry=%d ret_op=%d "
474 "reason=%d expl=%d", iport, ret, iport->iport_login_retry,
475 fx.fx_op, fx.fx_rjt_reason, fx.fx_rjt_expl);
476 mutex_exit(&iport->iport_worker_lock);
477 fct_handle_event(iport->iport_port, FCT_EVENT_LINK_DOWN, 0, 0);
478 mutex_enter(&iport->iport_worker_lock);
479 goto done;
480 }
481
482 /* FLOGI succeeded. Update local port state */
483 ASSERT(fx.fx_op == ELS_OP_ACC);
484 bcopy(fx.fx_nwwn, iport->iport_link_info.port_rnwwn, 8);
485 bcopy(fx.fx_pwwn, iport->iport_link_info.port_rpwwn, 8);
486 if (fx.fx_fport) {
487 iport->iport_link_info.port_topology |=
488 PORT_TOPOLOGY_FABRIC_BIT;
489 iport->iport_link_info.portid = fx.fx_did;
490 }
491 iport->iport_link_info.port_fct_flogi_done = 1;
492
493 done:
494 DTRACE_FC_1(fabric__login__end,
495 fct_i_local_port_t, iport);
496 }
497
498 /*
499 * Called by FCAs to handle unsolicited FLOGIs.
500 */
501 fct_status_t
fct_handle_rcvd_flogi(fct_local_port_t * port,fct_flogi_xchg_t * fx)502 fct_handle_rcvd_flogi(fct_local_port_t *port, fct_flogi_xchg_t *fx)
503 {
504 fct_i_local_port_t *iport;
505 uint32_t t;
506
507 iport = (fct_i_local_port_t *)port->port_fct_private;
508 if ((iport->iport_flags & IPORT_ALLOW_UNSOL_FLOGI) == 0) {
509 return (FCT_FAILURE);
510 }
511
512 mutex_enter(&iport->iport_worker_lock);
513 if (((iport->iport_flags & IPORT_ALLOW_UNSOL_FLOGI) == 0) ||
514 (iport->iport_link_state != PORT_STATE_LINK_INIT_START) ||
515 ((iport->iport_li_state & LI_STATE_MASK) > LI_STATE_N2N_PLOGI)) {
516 mutex_exit(&iport->iport_worker_lock);
517 return (FCT_FAILURE);
518 }
519
520 if (iport->iport_link_info.port_fct_flogi_done == 0) {
521 iport->iport_link_info.port_fct_flogi_done = 1;
522 bcopy(fx->fx_pwwn, iport->iport_link_info.port_rpwwn, 8);
523 bcopy(fx->fx_nwwn, iport->iport_link_info.port_rnwwn, 8);
524 }
525
526 fx->fx_op = ELS_OP_ACC;
527 t = fx->fx_sid;
528 fx->fx_sid = fx->fx_did;
529 fx->fx_did = t;
530 bcopy(iport->iport_port->port_pwwn, fx->fx_pwwn, 8);
531 bcopy(iport->iport_port->port_nwwn, fx->fx_nwwn, 8);
532 mutex_exit(&iport->iport_worker_lock);
533
534 return (FCT_SUCCESS);
535 }
536
537 /*
538 * iport_li_state can only be changed here and local_event
539 */
540 disc_action_t
fct_process_link_init(fct_i_local_port_t * iport)541 fct_process_link_init(fct_i_local_port_t *iport)
542 {
543 fct_cmd_t *cmd = NULL;
544 char *pname = NULL;
545 uint8_t elsop = 0;
546 uint16_t ctop = 0;
547 uint32_t wkdid = 0;
548 int implicit = 0;
549 int force_login = 0;
550 disc_action_t ret = DISC_ACTION_RESCAN;
551 fct_link_info_t *li = &iport->iport_link_info;
552 char topo[24], speed[4];
553
554 ASSERT(MUTEX_HELD(&iport->iport_worker_lock));
555
556 check_state_again:
557 switch (iport->iport_li_state & LI_STATE_MASK) {
558 case LI_STATE_DO_FLOGI:
559 /* Is FLOGI even needed or already done ? */
560 if ((iport->iport_link_info.port_no_fct_flogi) ||
561 (IPORT_FLOGI_DONE(iport))) {
562 iport->iport_li_state++;
563 goto check_state_again;
564 }
565 fct_do_flogi(iport);
566 break;
567
568 case LI_STATE_FINI_TOPOLOGY:
569 fct_li_to_txt(li, topo, speed);
570 cmn_err(CE_NOTE, "%s LINK UP, portid %x, topology %s,"
571 "speed %s", iport->iport_alias, li->portid,
572 topo, speed);
573 if (li->port_topology !=
574 iport->iport_link_old_topology) {
575 if (iport->iport_nrps) {
576 /*
577 * rehash it if change from fabric to
578 * none fabric, vice versa
579 */
580 if ((li->port_topology ^
581 iport->iport_link_old_topology) &
582 PORT_TOPOLOGY_FABRIC_BIT) {
583 mutex_exit(&iport->iport_worker_lock);
584 fct_rehash(iport);
585 mutex_enter(&iport->iport_worker_lock);
586 }
587 }
588 iport->iport_link_old_topology = li->port_topology;
589 }
590 /* Skip next level if topo is not N2N */
591 if (li->port_topology != PORT_TOPOLOGY_PT_TO_PT) {
592 iport->iport_li_state += 2;
593 atomic_and_32(&iport->iport_flags,
594 ~IPORT_ALLOW_UNSOL_FLOGI);
595 } else {
596 iport->iport_li_state++;
597 iport->iport_login_retry = 0;
598 iport->iport_li_cmd_timeout = ddi_get_lbolt() +
599 drv_usectohz(25 * 1000000);
600 }
601 goto check_state_again;
602
603 case LI_STATE_N2N_PLOGI:
604 ASSERT(IPORT_FLOGI_DONE(iport));
605 ASSERT(iport->iport_link_info.port_topology ==
606 PORT_TOPOLOGY_PT_TO_PT);
607 if (iport->iport_li_state & LI_STATE_FLAG_CMD_RETCHECK) {
608 iport->iport_li_state &= ~LI_STATE_FLAG_CMD_RETCHECK;
609 if (iport->iport_li_comp_status != FCT_SUCCESS) {
610 iport->iport_login_retry++;
611 if (iport->iport_login_retry >= 3) {
612 stmf_trace(iport->iport_alias, "Failing"
613 " to PLOGI to remote port in N2N "
614 " ret=%llx, forcing link down",
615 iport->iport_li_comp_status);
616 mutex_exit(&iport->iport_worker_lock);
617 fct_handle_event(iport->iport_port,
618 FCT_EVENT_LINK_DOWN, 0, 0);
619 mutex_enter(&iport->iport_worker_lock);
620 }
621 }
622 }
623 /* Find out if we need to do PLOGI at all */
624 if (iport->iport_nrps_login) {
625 iport->iport_li_state++;
626 atomic_and_32(&iport->iport_flags,
627 ~IPORT_ALLOW_UNSOL_FLOGI);
628 goto check_state_again;
629 }
630 if ((ddi_get_lbolt() >= iport->iport_li_cmd_timeout) &&
631 (!fct_lport_has_bigger_wwn(iport))) {
632 /* Cant wait forever */
633 stmf_trace(iport->iport_alias, "N2N: Remote port is "
634 "not logging in, forcing from our side");
635 force_login = 1;
636 } else {
637 force_login = 0;
638 }
639 if (force_login || fct_lport_has_bigger_wwn(iport)) {
640 elsop = ELS_OP_PLOGI;
641 wkdid = 1;
642 iport->iport_link_info.portid = 0xEF;
643 implicit = 0;
644 iport->iport_li_state |= LI_STATE_FLAG_CMD_RETCHECK;
645 } else {
646 ret = DISC_ACTION_DELAY_RESCAN;
647 }
648 break;
649
650 case LI_STATE_DO_FCLOGIN:
651 if (iport->iport_li_state & LI_STATE_FLAG_CMD_RETCHECK) {
652 iport->iport_li_state &= ~LI_STATE_FLAG_CMD_RETCHECK;
653 if (iport->iport_li_comp_status != FCT_SUCCESS) {
654 /*
655 * Fabric controller login failed. Just skip all
656 * the fabric controller related cmds.
657 */
658 iport->iport_li_state = LI_STATE_DO_SCR + 1;
659 } else {
660 /*
661 * Good. Now lets go to next state
662 */
663 iport->iport_li_state++;
664 }
665 goto check_state_again;
666 }
667 if (!IPORT_IN_NS_TOPO(iport)) {
668 iport->iport_li_state = LI_STATE_DO_SCR + 1;
669 goto check_state_again;
670 }
671
672 elsop = ELS_OP_PLOGI;
673 wkdid = FS_FABRIC_CONTROLLER;
674 implicit = 1;
675
676 /*
677 * We want to come back in the same state and check its ret
678 * We can't modify the state here
679 */
680 iport->iport_li_state |= LI_STATE_FLAG_CMD_RETCHECK;
681 break;
682
683 case LI_STATE_DO_SCR:
684 elsop = ELS_OP_SCR;
685 wkdid = FS_FABRIC_CONTROLLER;
686
687 /*
688 * We dont care about success of this state. Just go to
689 * next state upon completion.
690 */
691 iport->iport_li_state++;
692 break;
693
694 case LI_STATE_DO_NSLOGIN:
695 if (iport->iport_li_state & LI_STATE_FLAG_CMD_RETCHECK) {
696 iport->iport_li_state &= ~LI_STATE_FLAG_CMD_RETCHECK;
697 if (iport->iport_li_comp_status != FCT_SUCCESS) {
698 iport->iport_li_state = LI_STATE_DO_RSNN + 1;
699 } else {
700 iport->iport_li_state++;
701 }
702 goto check_state_again;
703 }
704
705 if (!IPORT_IN_NS_TOPO(iport)) {
706 iport->iport_li_state = LI_STATE_DO_RSNN + 1;
707 goto check_state_again;
708 }
709
710 elsop = ELS_OP_PLOGI;
711 wkdid = FS_NAME_SERVER;
712 iport->iport_li_state |= LI_STATE_FLAG_CMD_RETCHECK;
713 break;
714
715 /*
716 * CT state
717 */
718 case LI_STATE_DO_RNN:
719 ctop = NS_RNN_ID;
720 iport->iport_li_state++;
721 break;
722
723 case LI_STATE_DO_RCS:
724 ctop = NS_RCS_ID;
725 iport->iport_li_state++;
726 break;
727
728 case LI_STATE_DO_RFT:
729 ctop = NS_RFT_ID;
730 iport->iport_li_state++;
731 break;
732
733 case LI_STATE_DO_RSPN:
734 /*
735 * Check if we need skip the state
736 */
737 pname = iport->iport_port->port_sym_port_name !=
738 NULL ? iport->iport_port->port_sym_port_name : NULL;
739 if (pname == NULL) {
740 pname = iport->iport_port->port_default_alias !=
741 NULL ? iport->iport_port->port_default_alias : NULL;
742 iport->iport_port->port_sym_port_name = pname;
743 }
744
745 if (pname == NULL) {
746 iport->iport_li_state++;
747 goto check_state_again;
748 }
749
750 ctop = NS_RSPN_ID;
751 iport->iport_li_state++;
752 break;
753
754 case LI_STATE_DO_RSNN:
755 ctop = NS_RSNN_NN;
756 iport->iport_li_state++;
757 break;
758
759 case LI_STATE_MAX:
760 mutex_exit(&iport->iport_worker_lock);
761
762 fct_handle_event(iport->iport_port,
763 FCT_I_EVENT_LINK_INIT_DONE, 0, 0);
764
765 mutex_enter(&iport->iport_worker_lock);
766 break;
767
768 default:
769 ASSERT(0);
770 }
771
772 if (elsop != 0) {
773 cmd = fct_create_solels(iport->iport_port, NULL, implicit,
774 elsop, wkdid, fct_link_init_cb);
775 } else if (ctop != 0) {
776 cmd = fct_create_solct(iport->iport_port, NULL, ctop,
777 fct_link_init_cb);
778 }
779
780 if (cmd) {
781 iport->iport_li_state |= LI_STATE_FLAG_CMD_WAITING;
782 mutex_exit(&iport->iport_worker_lock);
783
784 fct_post_to_solcmd_queue(iport->iport_port, cmd);
785
786 mutex_enter(&iport->iport_worker_lock);
787 }
788
789 return (ret);
790 }
791
792 /*
793 * Handles both solicited and unsolicited elses. Can be called inside
794 * interrupt context.
795 */
796 void
fct_handle_els(fct_cmd_t * cmd)797 fct_handle_els(fct_cmd_t *cmd)
798 {
799 fct_local_port_t *port = cmd->cmd_port;
800 fct_i_local_port_t *iport =
801 (fct_i_local_port_t *)port->port_fct_private;
802 fct_i_cmd_t *icmd = (fct_i_cmd_t *)cmd->cmd_fct_private;
803 fct_els_t *els = (fct_els_t *)cmd->cmd_specific;
804 fct_remote_port_t *rp;
805 fct_i_remote_port_t *irp;
806 uint16_t cmd_slot;
807 uint8_t op;
808
809 op = els->els_req_payload[0];
810 icmd->icmd_start_time = ddi_get_lbolt();
811 if (cmd->cmd_type == FCT_CMD_RCVD_ELS) {
812 icmd->icmd_flags |= ICMD_KNOWN_TO_FCA;
813 }
814 stmf_trace(iport->iport_alias, "Posting %ssol ELS %x (%s) rp_id=%x"
815 " lp_id=%x", (cmd->cmd_type == FCT_CMD_RCVD_ELS) ? "un" : "",
816 op, FCT_ELS_NAME(op), cmd->cmd_rportid,
817 cmd->cmd_lportid);
818
819 rw_enter(&iport->iport_lock, RW_READER);
820 start_els_posting:;
821 /* Make sure local port is sane */
822 if ((iport->iport_link_state & S_LINK_ONLINE) == 0) {
823 rw_exit(&iport->iport_lock);
824 stmf_trace(iport->iport_alias, "ELS %x not posted becasue"
825 "port state was %x", els->els_req_payload[0],
826 iport->iport_link_state);
827 fct_queue_cmd_for_termination(cmd, FCT_LOCAL_PORT_OFFLINE);
828 return;
829 }
830
831 /* Weed out any bad initiators in case of N2N topology */
832 if ((cmd->cmd_type == FCT_CMD_RCVD_ELS) &&
833 (els->els_req_payload[0] == ELS_OP_PLOGI) &&
834 (iport->iport_link_state == PORT_STATE_LINK_INIT_START) &&
835 (iport->iport_link_info.port_topology == PORT_TOPOLOGY_PT_TO_PT)) {
836 int state;
837 int killit = 0;
838
839 mutex_enter(&iport->iport_worker_lock);
840 state = iport->iport_li_state & LI_STATE_MASK;
841 /*
842 * We dont allow remote port to plogi in N2N if we have not yet
843 * resolved the topology.
844 */
845 if (state <= LI_STATE_FINI_TOPOLOGY) {
846 killit = 1;
847 stmf_trace(iport->iport_alias, "port %x is trying to "
848 "PLOGI in N2N topology, While we have not resolved"
849 " the topology. Dropping...", cmd->cmd_rportid);
850 } else if (state <= LI_STATE_N2N_PLOGI) {
851 if (fct_lport_has_bigger_wwn(iport)) {
852 killit = 1;
853 stmf_trace(iport->iport_alias, "port %x is "
854 "trying to PLOGI in N2N topology, even "
855 "though it has smaller PWWN",
856 cmd->cmd_rportid);
857 } else {
858 /*
859 * Remote port is assigning us a PORTID as
860 * a part of PLOGI.
861 */
862 iport->iport_link_info.portid =
863 cmd->cmd_lportid;
864 }
865 }
866 mutex_exit(&iport->iport_worker_lock);
867 if (killit) {
868 rw_exit(&iport->iport_lock);
869 fct_queue_cmd_for_termination(cmd,
870 FCT_LOCAL_PORT_OFFLINE);
871 return;
872 }
873 }
874
875 /*
876 * For all unsolicited ELSes that are not FLOGIs, our portid
877 * has been established by now. Sometimes port IDs change due to
878 * link resets but remote ports may still send ELSes using the
879 * old IDs. Kill those right here.
880 */
881 if ((cmd->cmd_type == FCT_CMD_RCVD_ELS) &&
882 (els->els_req_payload[0] != ELS_OP_FLOGI)) {
883 if (cmd->cmd_lportid != iport->iport_link_info.portid) {
884 rw_exit(&iport->iport_lock);
885 stmf_trace(iport->iport_alias, "Rcvd %s with "
886 "wrong lportid %x, expecting %x. Killing ELS.",
887 FCT_ELS_NAME(op), cmd->cmd_lportid,
888 iport->iport_link_info.portid);
889 fct_queue_cmd_for_termination(cmd,
890 FCT_NOT_FOUND);
891 return;
892 }
893 }
894
895 /*
896 * We always lookup by portid. port handles are too
897 * unreliable at this stage.
898 */
899 irp = fct_portid_to_portptr(iport, cmd->cmd_rportid);
900 if (els->els_req_payload[0] == ELS_OP_PLOGI) {
901 if (irp == NULL) {
902 /* drop the lock while we do allocations */
903 rw_exit(&iport->iport_lock);
904 rp = fct_alloc(FCT_STRUCT_REMOTE_PORT,
905 port->port_fca_rp_private_size, 0);
906 if (rp == NULL) {
907 fct_queue_cmd_for_termination(cmd,
908 FCT_ALLOC_FAILURE);
909 return;
910 }
911 irp = (fct_i_remote_port_t *)rp->rp_fct_private;
912 rw_init(&irp->irp_lock, 0, RW_DRIVER, 0);
913 irp->irp_rp = rp;
914 irp->irp_portid = cmd->cmd_rportid;
915 rp->rp_port = port;
916 rp->rp_id = cmd->cmd_rportid;
917 rp->rp_handle = FCT_HANDLE_NONE;
918 /*
919 * Grab port lock as writer since we are going
920 * to modify the local port struct.
921 */
922 rw_enter(&iport->iport_lock, RW_WRITER);
923 /* Make sure nobody created the struct except us */
924 if (fct_portid_to_portptr(iport, cmd->cmd_rportid)) {
925 /* Oh well, free it */
926 fct_free(rp);
927 } else {
928 fct_queue_rp(iport, irp);
929 }
930 rw_downgrade(&iport->iport_lock);
931 /* Start over becasue we dropped the lock */
932 goto start_els_posting;
933 }
934
935 /* A PLOGI is by default a logout of previous session */
936 irp->irp_deregister_timer = ddi_get_lbolt() +
937 drv_usectohz(USEC_DEREG_RP_TIMEOUT);
938 irp->irp_dereg_count = 0;
939 fct_post_to_discovery_queue(iport, irp, NULL);
940
941 /* A PLOGI also invalidates any RSCNs related to this rp */
942 atomic_inc_32(&irp->irp_rscn_counter);
943 } else {
944 /*
945 * For everything else, we have (or be able to lookup) a
946 * valid port pointer.
947 */
948 if (irp == NULL) {
949 rw_exit(&iport->iport_lock);
950 if (cmd->cmd_type == FCT_CMD_RCVD_ELS) {
951 /* XXX Throw a logout to the initiator */
952 stmf_trace(iport->iport_alias, "ELS %x "
953 "received from %x without a session",
954 els->els_req_payload[0], cmd->cmd_rportid);
955 } else {
956 stmf_trace(iport->iport_alias, "Sending ELS %x "
957 "to %x without a session",
958 els->els_req_payload[0], cmd->cmd_rportid);
959 }
960 fct_queue_cmd_for_termination(cmd, FCT_NOT_LOGGED_IN);
961 return;
962 }
963 }
964 cmd->cmd_rp = rp = irp->irp_rp;
965
966 /*
967 * Lets get a slot for this els
968 */
969 if (!(icmd->icmd_flags & ICMD_IMPLICIT)) {
970 cmd_slot = fct_alloc_cmd_slot(iport, cmd);
971 if (cmd_slot == FCT_SLOT_EOL) {
972 /* This should not have happened */
973 rw_exit(&iport->iport_lock);
974 stmf_trace(iport->iport_alias,
975 "ran out of xchg resources");
976 fct_queue_cmd_for_termination(cmd,
977 FCT_NO_XCHG_RESOURCE);
978 return;
979 }
980 } else {
981 /*
982 * Tell the framework that fct_cmd_free() can decrement the
983 * irp_nonfcp_xchg_count variable.
984 */
985 atomic_or_32(&icmd->icmd_flags, ICMD_IMPLICIT_CMD_HAS_RESOURCE);
986 }
987 atomic_inc_16(&irp->irp_nonfcp_xchg_count);
988
989 /*
990 * Grab the remote port lock while we modify the port state.
991 * we should not drop the fca port lock (as a reader) until we
992 * modify the remote port state.
993 */
994 rw_enter(&irp->irp_lock, RW_WRITER);
995 if ((op == ELS_OP_PLOGI) || (op == ELS_OP_PRLI) ||
996 (op == ELS_OP_LOGO) || (op == ELS_OP_PRLO) ||
997 (op == ELS_OP_TPRLO)) {
998 uint32_t rf = IRP_PRLI_DONE;
999 if ((op == ELS_OP_PLOGI) || (op == ELS_OP_LOGO)) {
1000 rf |= IRP_PLOGI_DONE;
1001 if (irp->irp_flags & IRP_PLOGI_DONE)
1002 atomic_dec_32(&iport->iport_nrps_login);
1003 }
1004 atomic_inc_16(&irp->irp_sa_elses_count);
1005 atomic_and_32(&irp->irp_flags, ~rf);
1006 atomic_or_32(&icmd->icmd_flags, ICMD_SESSION_AFFECTING);
1007 } else {
1008 atomic_inc_16(&irp->irp_nsa_elses_count);
1009 }
1010
1011 fct_post_to_discovery_queue(iport, irp, icmd);
1012
1013 rw_exit(&irp->irp_lock);
1014 rw_exit(&iport->iport_lock);
1015 }
1016
1017 /*
1018 * Cleanup I/Os for a rport. ttc is a bit Mask of cmd types to clean.
1019 * No locks held.
1020 */
1021 int
fct_trigger_rport_cleanup(fct_i_remote_port_t * irp,int ttc)1022 fct_trigger_rport_cleanup(fct_i_remote_port_t *irp, int ttc)
1023 {
1024 fct_remote_port_t *rp = irp->irp_rp;
1025 fct_local_port_t *port = rp->rp_port;
1026 fct_i_local_port_t *iport =
1027 (fct_i_local_port_t *)port->port_fct_private;
1028 fct_cmd_t *cmd;
1029 fct_i_cmd_t *icmd;
1030 int i;
1031 int ret;
1032 uint16_t total, cleaned, skipped, unhandled;
1033
1034 rw_enter(&iport->iport_lock, RW_WRITER);
1035 rw_enter(&irp->irp_lock, RW_WRITER);
1036 mutex_enter(&iport->iport_worker_lock);
1037 total = port->port_max_xchges - iport->iport_nslots_free;
1038 cleaned = skipped = unhandled = 0;
1039
1040 for (i = 0; i < port->port_max_xchges; i++) {
1041 if (iport->iport_cmd_slots[i].slot_cmd == NULL)
1042 continue;
1043 icmd = iport->iport_cmd_slots[i].slot_cmd;
1044 if (icmd->icmd_flags & ICMD_IN_TRANSITION) {
1045 unhandled++;
1046 continue;
1047 }
1048
1049 if (icmd->icmd_flags & ICMD_CMD_COMPLETE) {
1050 unhandled++;
1051 continue;
1052 }
1053
1054 cmd = icmd->icmd_cmd;
1055 if (cmd->cmd_rp != rp) {
1056 skipped++;
1057 continue;
1058 }
1059 if (cmd->cmd_type & ttc) {
1060 if (cmd->cmd_type == FCT_CMD_FCP_XCHG)
1061 fct_queue_scsi_task_for_termination(cmd,
1062 FCT_ABORTED);
1063 else
1064 fct_q_for_termination_lock_held(iport, icmd,
1065 FCT_ABORTED);
1066 cleaned++;
1067 } else {
1068 skipped++;
1069 }
1070 }
1071 if (((cleaned + skipped) == total) && (unhandled == 0)) {
1072 ret = 1;
1073 } else {
1074 /*
1075 * XXX: handle this situation.
1076 */
1077 stmf_trace(iport->iport_alias, "Clean up trouble for irp"
1078 " %p, c/s/u/t = %d/%d/%d/%d", irp, cleaned, skipped,
1079 unhandled, total);
1080 ret = 0;
1081 }
1082 if ((cleaned) && IS_WORKER_SLEEPING(iport))
1083 cv_signal(&iport->iport_worker_cv);
1084 mutex_exit(&iport->iport_worker_lock);
1085 rw_exit(&irp->irp_lock);
1086 rw_exit(&iport->iport_lock);
1087 return (ret);
1088 }
1089
1090 void
fct_dequeue_els(fct_i_remote_port_t * irp)1091 fct_dequeue_els(fct_i_remote_port_t *irp)
1092 {
1093 fct_i_cmd_t *icmd;
1094
1095 rw_enter(&irp->irp_lock, RW_WRITER);
1096 icmd = irp->irp_els_list;
1097 irp->irp_els_list = icmd->icmd_next;
1098 atomic_and_32(&icmd->icmd_flags, ~ICMD_IN_IRP_QUEUE);
1099 rw_exit(&irp->irp_lock);
1100 }
1101
1102 fct_status_t
fct_register_remote_port(fct_local_port_t * port,fct_remote_port_t * rp,fct_cmd_t * cmd)1103 fct_register_remote_port(fct_local_port_t *port, fct_remote_port_t *rp,
1104 fct_cmd_t *cmd)
1105 {
1106 fct_status_t ret;
1107 fct_i_local_port_t *iport;
1108 fct_i_remote_port_t *irp;
1109 int i;
1110 char info[FCT_INFO_LEN];
1111
1112 iport = (fct_i_local_port_t *)port->port_fct_private;
1113 irp = (fct_i_remote_port_t *)rp->rp_fct_private;
1114
1115 if ((ret = port->port_register_remote_port(port, rp, cmd)) !=
1116 FCT_SUCCESS)
1117 return (ret);
1118
1119 rw_enter(&iport->iport_lock, RW_WRITER);
1120 rw_enter(&irp->irp_lock, RW_WRITER);
1121 if (rp->rp_handle != FCT_HANDLE_NONE) {
1122 if (rp->rp_handle >= port->port_max_logins) {
1123 (void) snprintf(info, sizeof (info),
1124 "fct_register_remote_port: FCA "
1125 "returned a handle (%d) for portid %x which is "
1126 "out of range (max logins = %d)", rp->rp_handle,
1127 rp->rp_id, port->port_max_logins);
1128 goto hba_fatal_err;
1129 }
1130 if ((iport->iport_rp_slots[rp->rp_handle] != NULL) &&
1131 (iport->iport_rp_slots[rp->rp_handle] != irp)) {
1132 fct_i_remote_port_t *t_irp =
1133 iport->iport_rp_slots[rp->rp_handle];
1134 (void) snprintf(info, sizeof (info),
1135 "fct_register_remote_port: "
1136 "FCA returned a handle %d for portid %x "
1137 "which was already in use for a different "
1138 "portid (%x)", rp->rp_handle, rp->rp_id,
1139 t_irp->irp_rp->rp_id);
1140 goto hba_fatal_err;
1141 }
1142 } else {
1143 /* Pick a handle for this port */
1144 for (i = 0; i < port->port_max_logins; i++) {
1145 if (iport->iport_rp_slots[i] == NULL) {
1146 break;
1147 }
1148 }
1149 if (i == port->port_max_logins) {
1150 /* This is really pushing it. */
1151 (void) snprintf(info, sizeof (info),
1152 "fct_register_remote_port "
1153 "Cannot register portid %x because all the "
1154 "handles are used up", rp->rp_id);
1155 goto hba_fatal_err;
1156 }
1157 rp->rp_handle = i;
1158 }
1159 /* By this time rport_handle is valid */
1160 if ((irp->irp_flags & IRP_HANDLE_OPENED) == 0) {
1161 iport->iport_rp_slots[rp->rp_handle] = irp;
1162 atomic_or_32(&irp->irp_flags, IRP_HANDLE_OPENED);
1163 }
1164 atomic_inc_64(&iport->iport_last_change);
1165 fct_log_remote_port_event(port, ESC_SUNFC_TARGET_ADD,
1166 rp->rp_pwwn, rp->rp_id);
1167
1168 register_rp_done:;
1169 rw_exit(&irp->irp_lock);
1170 rw_exit(&iport->iport_lock);
1171 return (FCT_SUCCESS);
1172
1173 hba_fatal_err:;
1174 rw_exit(&irp->irp_lock);
1175 rw_exit(&iport->iport_lock);
1176 /*
1177 * XXX Throw HBA fatal error event
1178 */
1179 (void) fct_port_shutdown(iport->iport_port,
1180 STMF_RFLAG_FATAL_ERROR | STMF_RFLAG_RESET, info);
1181 return (FCT_FAILURE);
1182 }
1183
1184 fct_status_t
fct_deregister_remote_port(fct_local_port_t * port,fct_remote_port_t * rp)1185 fct_deregister_remote_port(fct_local_port_t *port, fct_remote_port_t *rp)
1186 {
1187 fct_status_t ret = FCT_SUCCESS;
1188 fct_i_local_port_t *iport = PORT_TO_IPORT(port);
1189 fct_i_remote_port_t *irp = RP_TO_IRP(rp);
1190
1191 if (irp->irp_snn) {
1192 kmem_free(irp->irp_snn, strlen(irp->irp_snn) + 1);
1193 irp->irp_snn = NULL;
1194 }
1195 if (irp->irp_spn) {
1196 kmem_free(irp->irp_spn, strlen(irp->irp_spn) + 1);
1197 irp->irp_spn = NULL;
1198 }
1199
1200 if ((ret = port->port_deregister_remote_port(port, rp)) !=
1201 FCT_SUCCESS) {
1202 return (ret);
1203 }
1204
1205 if (irp->irp_flags & IRP_HANDLE_OPENED) {
1206 atomic_and_32(&irp->irp_flags, ~IRP_HANDLE_OPENED);
1207 iport->iport_rp_slots[rp->rp_handle] = NULL;
1208 }
1209 atomic_inc_64(&iport->iport_last_change);
1210 fct_log_remote_port_event(port, ESC_SUNFC_TARGET_REMOVE,
1211 rp->rp_pwwn, rp->rp_id);
1212
1213 return (FCT_SUCCESS);
1214 }
1215
1216 fct_status_t
fct_send_accrjt(fct_cmd_t * cmd,uint8_t accrjt,uint8_t reason,uint8_t expl)1217 fct_send_accrjt(fct_cmd_t *cmd, uint8_t accrjt, uint8_t reason, uint8_t expl)
1218 {
1219 fct_local_port_t *port = (fct_local_port_t *)cmd->cmd_port;
1220 fct_els_t *els = (fct_els_t *)cmd->cmd_specific;
1221
1222 els->els_resp_size = els->els_resp_alloc_size = 8;
1223 els->els_resp_payload = (uint8_t *)kmem_zalloc(8, KM_SLEEP);
1224 els->els_resp_payload[0] = accrjt;
1225 if (accrjt == 1) {
1226 els->els_resp_payload[5] = reason;
1227 els->els_resp_payload[6] = expl;
1228 } else {
1229 els->els_resp_size = 4;
1230 }
1231
1232 return (port->port_send_cmd_response(cmd, 0));
1233 }
1234
1235
1236 disc_action_t
fct_walk_discovery_queue(fct_i_local_port_t * iport)1237 fct_walk_discovery_queue(fct_i_local_port_t *iport)
1238 {
1239 char info[FCT_INFO_LEN];
1240 fct_i_remote_port_t **pirp;
1241 fct_i_remote_port_t *prev_irp = NULL;
1242 disc_action_t suggested_action = DISC_ACTION_NO_WORK;
1243 fct_i_remote_port_t *irp_dereg_list = NULL;
1244 fct_i_remote_port_t *irp_cur_item = NULL;
1245
1246 for (pirp = &iport->iport_rpwe_head; *pirp != NULL; ) {
1247 fct_i_remote_port_t *irp = *pirp;
1248 disc_action_t ret = DISC_ACTION_NO_WORK;
1249 int do_deregister = 0;
1250 int irp_deregister_timer = 0;
1251
1252 if (irp->irp_els_list) {
1253 ret |= fct_process_els(iport, irp);
1254 }
1255
1256 irp_deregister_timer = irp->irp_deregister_timer;
1257 if (irp_deregister_timer) {
1258 if (ddi_get_lbolt() >= irp_deregister_timer) {
1259 do_deregister = 1;
1260 } else {
1261 ret |= DISC_ACTION_DELAY_RESCAN;
1262 }
1263 }
1264 suggested_action |= ret;
1265
1266 if (irp->irp_els_list == NULL) {
1267 mutex_exit(&iport->iport_worker_lock);
1268 rw_enter(&iport->iport_lock, RW_WRITER);
1269 rw_enter(&irp->irp_lock, RW_WRITER);
1270 mutex_enter(&iport->iport_worker_lock);
1271 if (irp->irp_els_list == NULL) {
1272 if (!irp_deregister_timer ||
1273 (do_deregister &&
1274 !irp->irp_sa_elses_count &&
1275 !irp->irp_nsa_elses_count &&
1276 !irp->irp_fcp_xchg_count &&
1277 !irp->irp_nonfcp_xchg_count)) {
1278 /* dequeue irp from discovery queue */
1279 atomic_and_32(&irp->irp_flags,
1280 ~IRP_IN_DISCOVERY_QUEUE);
1281 *pirp = irp->irp_discovery_next;
1282 if (iport->iport_rpwe_head == NULL)
1283 iport->iport_rpwe_tail = NULL;
1284 else if (irp == iport->iport_rpwe_tail)
1285 iport->iport_rpwe_tail =
1286 prev_irp;
1287
1288 irp->irp_discovery_next = NULL;
1289 if (do_deregister) {
1290 fct_deque_rp(iport, irp);
1291 rw_exit(&irp->irp_lock);
1292 /* queue irp for deregister */
1293 irp->irp_next = NULL;
1294 if (!irp_dereg_list) {
1295 irp_dereg_list =
1296 irp_cur_item = irp;
1297 } else {
1298 irp_cur_item->irp_next =
1299 irp;
1300 irp_cur_item = irp;
1301 }
1302 } else {
1303 rw_exit(&irp->irp_lock);
1304 }
1305 rw_exit(&iport->iport_lock);
1306 if ((irp = *pirp) == NULL)
1307 break;
1308 } else {
1309 /*
1310 * wait for another scan until
1311 * deregister timeout
1312 */
1313 rw_exit(&irp->irp_lock);
1314 rw_exit(&iport->iport_lock);
1315 }
1316 } else {
1317 rw_exit(&irp->irp_lock);
1318 rw_exit(&iport->iport_lock);
1319 /*
1320 * When we dropped the lock,
1321 * something went in.
1322 */
1323 suggested_action |= DISC_ACTION_RESCAN;
1324 }
1325 }
1326 pirp = &(irp->irp_discovery_next);
1327 prev_irp = irp;
1328 }
1329 /* do deregister */
1330 if (irp_dereg_list) {
1331 fct_i_remote_port_t *irp_next_item;
1332 /* drop the lock */
1333 mutex_exit(&iport->iport_worker_lock);
1334
1335 for (irp_cur_item = irp_dereg_list; irp_cur_item != NULL; ) {
1336 irp_next_item = irp_cur_item->irp_next;
1337 if (fct_deregister_remote_port(iport->iport_port,
1338 irp_cur_item->irp_rp) == FCT_SUCCESS) {
1339 fct_free(irp_cur_item->irp_rp);
1340 } else if (++irp_cur_item->irp_dereg_count >= 5) {
1341 irp_cur_item->irp_deregister_timer = 0;
1342 irp_cur_item->irp_dereg_count = 0;
1343
1344 /*
1345 * It looks like we can't deregister it in the
1346 * normal way, so we have to use extrem way
1347 */
1348 (void) snprintf(info, sizeof (info),
1349 "fct_walk_discovery_queue: "
1350 "iport-%p, can't deregister irp-%p after "
1351 "trying 5 times", (void *)iport,
1352 (void *)irp_cur_item);
1353 (void) fct_port_shutdown(iport->iport_port,
1354 STMF_RFLAG_FATAL_ERROR |
1355 STMF_RFLAG_RESET, info);
1356 suggested_action |= DISC_ACTION_RESCAN;
1357 break;
1358 } else {
1359 /* grab the iport_lock */
1360 rw_enter(&iport->iport_lock, RW_WRITER);
1361 /* recover */
1362 irp_cur_item->irp_deregister_timer =
1363 ddi_get_lbolt() +
1364 drv_usectohz(USEC_DEREG_RP_INTERVAL);
1365 fct_post_to_discovery_queue(iport,
1366 irp_cur_item, NULL);
1367 fct_queue_rp(iport, irp_cur_item);
1368 rw_exit(&iport->iport_lock);
1369 suggested_action |= DISC_ACTION_DELAY_RESCAN;
1370 }
1371 irp_cur_item = irp_next_item;
1372 }
1373 mutex_enter(&iport->iport_worker_lock);
1374 }
1375 return (suggested_action);
1376 }
1377
1378 disc_action_t
fct_process_plogi(fct_i_cmd_t * icmd)1379 fct_process_plogi(fct_i_cmd_t *icmd)
1380 {
1381 fct_cmd_t *cmd = icmd->icmd_cmd;
1382 fct_remote_port_t *rp = cmd->cmd_rp;
1383 fct_local_port_t *port = cmd->cmd_port;
1384 fct_i_local_port_t *iport = (fct_i_local_port_t *)
1385 port->port_fct_private;
1386 fct_els_t *els = (fct_els_t *)
1387 cmd->cmd_specific;
1388 fct_i_remote_port_t *irp = (fct_i_remote_port_t *)
1389 rp->rp_fct_private;
1390 uint8_t *p;
1391 fct_status_t ret;
1392 uint8_t cmd_type = cmd->cmd_type;
1393 uint32_t icmd_flags = icmd->icmd_flags;
1394 clock_t end_time;
1395 char info[FCT_INFO_LEN];
1396
1397 DTRACE_FC_4(rport__login__start,
1398 fct_cmd_t, cmd,
1399 fct_local_port_t, port,
1400 fct_i_remote_port_t, irp,
1401 int, (cmd_type != FCT_CMD_RCVD_ELS));
1402
1403 /* Drain I/Os */
1404 if ((irp->irp_nonfcp_xchg_count + irp->irp_fcp_xchg_count) > 1) {
1405 /* Trigger cleanup if necessary */
1406 if ((irp->irp_flags & IRP_SESSION_CLEANUP) == 0) {
1407 stmf_trace(iport->iport_alias, "handling PLOGI rp_id"
1408 " %x. Triggering cleanup", cmd->cmd_rportid);
1409 /* Cleanup everything except elses */
1410 if (fct_trigger_rport_cleanup(irp, ~(cmd->cmd_type))) {
1411 atomic_or_32(&irp->irp_flags,
1412 IRP_SESSION_CLEANUP);
1413 } else {
1414 /* XXX: handle this */
1415 /* EMPTY */
1416 }
1417 }
1418
1419 end_time = icmd->icmd_start_time +
1420 drv_usectohz(USEC_ELS_TIMEOUT);
1421 if (ddi_get_lbolt() > end_time) {
1422 (void) snprintf(info, sizeof (info),
1423 "fct_process_plogi: unable to "
1424 "clean up I/O. iport-%p, icmd-%p", (void *)iport,
1425 (void *)icmd);
1426 (void) fct_port_shutdown(iport->iport_port,
1427 STMF_RFLAG_FATAL_ERROR | STMF_RFLAG_RESET, info);
1428
1429 return (DISC_ACTION_DELAY_RESCAN);
1430 }
1431
1432 if ((ddi_get_lbolt() & 0x7f) == 0) {
1433 stmf_trace(iport->iport_alias, "handling"
1434 " PLOGI rp_id %x, waiting for cmds to"
1435 " drain", cmd->cmd_rportid);
1436 }
1437 return (DISC_ACTION_DELAY_RESCAN);
1438 }
1439 atomic_and_32(&irp->irp_flags, ~IRP_SESSION_CLEANUP);
1440
1441 /* Session can only be terminated after all the I/Os have drained */
1442 if (irp->irp_flags & IRP_SCSI_SESSION_STARTED) {
1443 stmf_deregister_scsi_session(iport->iport_port->port_lport,
1444 irp->irp_session);
1445 stmf_free(irp->irp_session);
1446 irp->irp_session = NULL;
1447 atomic_and_32(&irp->irp_flags, ~IRP_SCSI_SESSION_STARTED);
1448 }
1449
1450 if (cmd->cmd_type == FCT_CMD_RCVD_ELS) {
1451 els->els_resp_size = els->els_req_size;
1452 p = els->els_resp_payload = (uint8_t *)kmem_zalloc(
1453 els->els_resp_size, KM_SLEEP);
1454 els->els_resp_alloc_size = els->els_resp_size;
1455 bcopy(els->els_req_payload, p, els->els_resp_size);
1456 p[0] = ELS_OP_ACC;
1457 bcopy(p+20, rp->rp_pwwn, 8);
1458 bcopy(p+28, rp->rp_nwwn, 8);
1459 bcopy(port->port_pwwn, p+20, 8);
1460 bcopy(port->port_nwwn, p+28, 8);
1461 fct_wwn_to_str(rp->rp_pwwn_str, rp->rp_pwwn);
1462 fct_wwn_to_str(rp->rp_nwwn_str, rp->rp_nwwn);
1463 fct_wwn_to_str(port->port_pwwn_str, port->port_pwwn);
1464 fct_wwn_to_str(port->port_nwwn_str, port->port_nwwn);
1465
1466 stmf_wwn_to_devid_desc((scsi_devid_desc_t *)irp->irp_id,
1467 rp->rp_pwwn, PROTOCOL_FIBRE_CHANNEL);
1468 }
1469
1470 ret = fct_register_remote_port(port, rp, cmd);
1471 fct_dequeue_els(irp);
1472 if ((ret == FCT_SUCCESS) && !(icmd->icmd_flags & ICMD_IMPLICIT)) {
1473 if (cmd->cmd_type == FCT_CMD_RCVD_ELS) {
1474 ret = port->port_send_cmd_response(cmd, 0);
1475 if ((ret == FCT_SUCCESS) && IPORT_IN_NS_TOPO(iport) &&
1476 !FC_WELL_KNOWN_ADDR(irp->irp_portid)) {
1477 fct_cmd_t *ct_cmd = fct_create_solct(port,
1478 rp, NS_GSNN_NN, fct_gsnn_cb);
1479 if (ct_cmd) {
1480 fct_post_to_solcmd_queue(port, ct_cmd);
1481 }
1482 ct_cmd = fct_create_solct(port, rp,
1483 NS_GSPN_ID, fct_gspn_cb);
1484 if (ct_cmd)
1485 fct_post_to_solcmd_queue(port, ct_cmd);
1486 ct_cmd = fct_create_solct(port, rp,
1487 NS_GCS_ID, fct_gcs_cb);
1488 if (ct_cmd)
1489 fct_post_to_solcmd_queue(port, ct_cmd);
1490 ct_cmd = fct_create_solct(port, rp,
1491 NS_GFT_ID, fct_gft_cb);
1492 if (ct_cmd)
1493 fct_post_to_solcmd_queue(port, ct_cmd);
1494 }
1495 } else {
1496 /*
1497 * The reason we set this flag is to prevent
1498 * killing a PRLI while we have not yet processed
1499 * a response to PLOGI. Because the initiator
1500 * will send a PRLI as soon as it responds to PLOGI.
1501 * Check fct_process_els() for more info.
1502 */
1503 atomic_or_32(&irp->irp_flags,
1504 IRP_SOL_PLOGI_IN_PROGRESS);
1505 atomic_or_32(&icmd->icmd_flags, ICMD_KNOWN_TO_FCA);
1506 ret = port->port_send_cmd(cmd);
1507 if (ret != FCT_SUCCESS) {
1508 atomic_and_32(&icmd->icmd_flags,
1509 ~ICMD_KNOWN_TO_FCA);
1510 atomic_and_32(&irp->irp_flags,
1511 ~IRP_SOL_PLOGI_IN_PROGRESS);
1512 }
1513 }
1514 }
1515 atomic_dec_16(&irp->irp_sa_elses_count);
1516
1517 if (ret == FCT_SUCCESS) {
1518 if (cmd_type == FCT_CMD_RCVD_ELS) {
1519 atomic_or_32(&irp->irp_flags, IRP_PLOGI_DONE);
1520 atomic_inc_32(&iport->iport_nrps_login);
1521 if (irp->irp_deregister_timer)
1522 irp->irp_deregister_timer = 0;
1523 }
1524 if (icmd_flags & ICMD_IMPLICIT) {
1525 DTRACE_FC_5(rport__login__end,
1526 fct_cmd_t, cmd,
1527 fct_local_port_t, port,
1528 fct_i_remote_port_t, irp,
1529 int, (cmd_type != FCT_CMD_RCVD_ELS),
1530 int, FCT_SUCCESS);
1531
1532 p = els->els_resp_payload;
1533 p[0] = ELS_OP_ACC;
1534 cmd->cmd_comp_status = FCT_SUCCESS;
1535 fct_send_cmd_done(cmd, FCT_SUCCESS, FCT_IOF_FCA_DONE);
1536 }
1537 } else {
1538 DTRACE_FC_5(rport__login__end,
1539 fct_cmd_t, cmd,
1540 fct_local_port_t, port,
1541 fct_i_remote_port_t, irp,
1542 int, (cmd_type != FCT_CMD_RCVD_ELS),
1543 int, ret);
1544
1545 fct_queue_cmd_for_termination(cmd, ret);
1546 }
1547
1548 /* Do not touch cmd here as it may have been freed */
1549
1550 return (DISC_ACTION_RESCAN);
1551 }
1552
1553 uint8_t fct_prli_temp[] = { 0x20, 0x10, 0, 0x14, 8, 0, 0x20, 0, 0, 0, 0, 0,
1554 0, 0, 0, 0 };
1555
1556 disc_action_t
fct_process_prli(fct_i_cmd_t * icmd)1557 fct_process_prli(fct_i_cmd_t *icmd)
1558 {
1559 fct_cmd_t *cmd = icmd->icmd_cmd;
1560 fct_remote_port_t *rp = cmd->cmd_rp;
1561 fct_local_port_t *port = cmd->cmd_port;
1562 fct_i_local_port_t *iport = (fct_i_local_port_t *)
1563 port->port_fct_private;
1564 fct_els_t *els = (fct_els_t *)
1565 cmd->cmd_specific;
1566 fct_i_remote_port_t *irp = (fct_i_remote_port_t *)
1567 rp->rp_fct_private;
1568 stmf_scsi_session_t *ses = NULL;
1569 fct_status_t ret;
1570 clock_t end_time;
1571 char info[FCT_INFO_LEN];
1572
1573 /* We dont support solicited PRLIs yet */
1574 ASSERT(cmd->cmd_type == FCT_CMD_RCVD_ELS);
1575
1576 if (irp->irp_flags & IRP_SOL_PLOGI_IN_PROGRESS) {
1577 /*
1578 * Dont process the PRLI yet. Let the framework process the
1579 * PLOGI completion 1st. This should be very quick because
1580 * the reason we got the PRLI is because the initiator
1581 * has responded to PLOGI already.
1582 */
1583 /* XXX: Probably need a timeout here */
1584 return (DISC_ACTION_DELAY_RESCAN);
1585 }
1586 /* The caller has made sure that login is done */
1587
1588 /* Make sure the process is fcp in this case */
1589 if ((els->els_req_size != 20) || (bcmp(els->els_req_payload,
1590 fct_prli_temp, 16))) {
1591 if (els->els_req_payload[4] != 0x08)
1592 stmf_trace(iport->iport_alias, "PRLI received from"
1593 " %x for unknown FC-4 type %x", cmd->cmd_rportid,
1594 els->els_req_payload[4]);
1595 else
1596 stmf_trace(iport->iport_alias, "Rejecting PRLI from %x "
1597 " pld sz %d, prli_flags %x", cmd->cmd_rportid,
1598 els->els_req_size, els->els_req_payload[6]);
1599
1600 fct_dequeue_els(irp);
1601 atomic_dec_16(&irp->irp_sa_elses_count);
1602 ret = fct_send_accrjt(cmd, ELS_OP_LSRJT, 3, 0x2c);
1603 goto prli_end;
1604 }
1605
1606 if (irp->irp_fcp_xchg_count) {
1607 /* Trigger cleanup if necessary */
1608 if ((irp->irp_flags & IRP_FCP_CLEANUP) == 0) {
1609 stmf_trace(iport->iport_alias, "handling PRLI from"
1610 " %x. Triggering cleanup", cmd->cmd_rportid);
1611 if (fct_trigger_rport_cleanup(irp, FCT_CMD_FCP_XCHG)) {
1612 atomic_or_32(&irp->irp_flags, IRP_FCP_CLEANUP);
1613 } else {
1614 /* XXX: handle this */
1615 /* EMPTY */
1616 }
1617 }
1618
1619 end_time = icmd->icmd_start_time +
1620 drv_usectohz(USEC_ELS_TIMEOUT);
1621 if (ddi_get_lbolt() > end_time) {
1622 (void) snprintf(info, sizeof (info),
1623 "fct_process_prli: unable to clean "
1624 "up I/O. iport-%p, icmd-%p", (void *)iport,
1625 (void *)icmd);
1626 (void) fct_port_shutdown(iport->iport_port,
1627 STMF_RFLAG_FATAL_ERROR | STMF_RFLAG_RESET, info);
1628
1629 return (DISC_ACTION_DELAY_RESCAN);
1630 }
1631
1632 if ((ddi_get_lbolt() & 0x7f) == 0) {
1633 stmf_trace(iport->iport_alias, "handling"
1634 " PRLI from %x, waiting for cmds to"
1635 " drain", cmd->cmd_rportid);
1636 }
1637 return (DISC_ACTION_DELAY_RESCAN);
1638 }
1639 atomic_and_32(&irp->irp_flags, ~IRP_FCP_CLEANUP);
1640
1641 /* Session can only be terminated after all the I/Os have drained */
1642 if (irp->irp_flags & IRP_SCSI_SESSION_STARTED) {
1643 stmf_deregister_scsi_session(iport->iport_port->port_lport,
1644 irp->irp_session);
1645 stmf_free(irp->irp_session);
1646 irp->irp_session = NULL;
1647 atomic_and_32(&irp->irp_flags, ~IRP_SCSI_SESSION_STARTED);
1648 }
1649
1650 /* All good, lets start a session */
1651 ses = (stmf_scsi_session_t *)stmf_alloc(STMF_STRUCT_SCSI_SESSION, 0, 0);
1652 if (ses) {
1653 ses->ss_port_private = irp;
1654 ses->ss_rport_id = (scsi_devid_desc_t *)irp->irp_id;
1655 ses->ss_lport = port->port_lport;
1656 if (stmf_register_scsi_session(port->port_lport, ses) !=
1657 STMF_SUCCESS) {
1658 stmf_free(ses);
1659 ses = NULL;
1660 } else {
1661 irp->irp_session = ses;
1662 irp->irp_session->ss_rport_alias = irp->irp_snn;
1663
1664 /*
1665 * The reason IRP_SCSI_SESSION_STARTED is different
1666 * from IRP_PRLI_DONE is that we clear IRP_PRLI_DONE
1667 * inside interrupt context. We dont want to deregister
1668 * the session from an interrupt.
1669 */
1670 atomic_or_32(&irp->irp_flags, IRP_SCSI_SESSION_STARTED);
1671 }
1672 }
1673
1674 fct_dequeue_els(irp);
1675 atomic_dec_16(&irp->irp_sa_elses_count);
1676 if (ses == NULL) {
1677 /* fail PRLI */
1678 ret = fct_send_accrjt(cmd, ELS_OP_LSRJT, 3, 0);
1679 } else {
1680 /* accept PRLI */
1681 els->els_resp_payload = (uint8_t *)kmem_zalloc(20, KM_SLEEP);
1682 bcopy(fct_prli_temp, els->els_resp_payload, 20);
1683 els->els_resp_payload[0] = 2;
1684 els->els_resp_payload[6] = 0x21;
1685
1686 /* XXX the two bytes below need to set as per capabilities */
1687 els->els_resp_payload[18] = 0;
1688 els->els_resp_payload[19] = 0x12;
1689
1690 els->els_resp_size = els->els_resp_alloc_size = 20;
1691 if ((ret = port->port_send_cmd_response(cmd, 0)) !=
1692 FCT_SUCCESS) {
1693 stmf_deregister_scsi_session(port->port_lport, ses);
1694 stmf_free(irp->irp_session);
1695 irp->irp_session = NULL;
1696 atomic_and_32(&irp->irp_flags,
1697 ~IRP_SCSI_SESSION_STARTED);
1698 } else {
1699 /* Mark that PRLI is done */
1700 atomic_or_32(&irp->irp_flags, IRP_PRLI_DONE);
1701 }
1702 }
1703
1704 prli_end:;
1705 if (ret != FCT_SUCCESS)
1706 fct_queue_cmd_for_termination(cmd, ret);
1707
1708 return (DISC_ACTION_RESCAN);
1709 }
1710
1711 disc_action_t
fct_process_logo(fct_i_cmd_t * icmd)1712 fct_process_logo(fct_i_cmd_t *icmd)
1713 {
1714 fct_cmd_t *cmd = icmd->icmd_cmd;
1715 fct_remote_port_t *rp = cmd->cmd_rp;
1716 fct_local_port_t *port = cmd->cmd_port;
1717 fct_i_local_port_t *iport = (fct_i_local_port_t *)
1718 port->port_fct_private;
1719 fct_i_remote_port_t *irp = (fct_i_remote_port_t *)
1720 rp->rp_fct_private;
1721 fct_status_t ret;
1722 char info[FCT_INFO_LEN];
1723 clock_t end_time;
1724
1725 DTRACE_FC_4(rport__logout__start,
1726 fct_cmd_t, cmd,
1727 fct_local_port_t, port,
1728 fct_i_remote_port_t, irp,
1729 int, (cmd->cmd_type != FCT_CMD_RCVD_ELS));
1730
1731 /* Drain I/Os */
1732 if ((irp->irp_nonfcp_xchg_count + irp->irp_fcp_xchg_count) > 1) {
1733 /* Trigger cleanup if necessary */
1734 if ((irp->irp_flags & IRP_SESSION_CLEANUP) == 0) {
1735 stmf_trace(iport->iport_alias, "handling LOGO rp_id"
1736 " %x. Triggering cleanup", cmd->cmd_rportid);
1737 /* Cleanup everything except elses */
1738 if (fct_trigger_rport_cleanup(irp, ~(cmd->cmd_type))) {
1739 atomic_or_32(&irp->irp_flags,
1740 IRP_SESSION_CLEANUP);
1741 } else {
1742 /* XXX: need more handling */
1743 return (DISC_ACTION_DELAY_RESCAN);
1744 }
1745 }
1746
1747 end_time = icmd->icmd_start_time +
1748 drv_usectohz(USEC_ELS_TIMEOUT);
1749 if (ddi_get_lbolt() > end_time) {
1750 (void) snprintf(info, sizeof (info),
1751 "fct_process_logo: unable to clean "
1752 "up I/O. iport-%p, icmd-%p", (void *)iport,
1753 (void *)icmd);
1754 (void) fct_port_shutdown(iport->iport_port,
1755 STMF_RFLAG_FATAL_ERROR | STMF_RFLAG_RESET, info);
1756
1757 return (DISC_ACTION_DELAY_RESCAN);
1758 }
1759
1760 if ((ddi_get_lbolt() & 0x7f) == 0) {
1761 stmf_trace(iport->iport_alias, "handling"
1762 " LOGO rp_id %x, waiting for cmds to"
1763 " drain", cmd->cmd_rportid);
1764 }
1765 return (DISC_ACTION_DELAY_RESCAN);
1766 }
1767 atomic_and_32(&irp->irp_flags, ~IRP_SESSION_CLEANUP);
1768
1769 /* Session can only be terminated after all the I/Os have drained */
1770 if (irp->irp_flags & IRP_SCSI_SESSION_STARTED) {
1771 stmf_deregister_scsi_session(iport->iport_port->port_lport,
1772 irp->irp_session);
1773 stmf_free(irp->irp_session);
1774 irp->irp_session = NULL;
1775 atomic_and_32(&irp->irp_flags, ~IRP_SCSI_SESSION_STARTED);
1776 }
1777
1778 fct_dequeue_els(irp);
1779 atomic_dec_16(&irp->irp_sa_elses_count);
1780
1781 /* don't send response if this is an implicit logout cmd */
1782 if (!(icmd->icmd_flags & ICMD_IMPLICIT)) {
1783 if (cmd->cmd_type == FCT_CMD_RCVD_ELS) {
1784 ret = fct_send_accrjt(cmd, ELS_OP_ACC, 0, 0);
1785 } else {
1786 atomic_or_32(&icmd->icmd_flags, ICMD_KNOWN_TO_FCA);
1787 ret = port->port_send_cmd(cmd);
1788 if (ret != FCT_SUCCESS) {
1789 atomic_and_32(&icmd->icmd_flags,
1790 ~ICMD_KNOWN_TO_FCA);
1791 }
1792 }
1793
1794 if (ret != FCT_SUCCESS) {
1795 fct_queue_cmd_for_termination(cmd, ret);
1796 }
1797
1798 DTRACE_FC_4(rport__logout__end,
1799 fct_cmd_t, cmd,
1800 fct_local_port_t, port,
1801 fct_i_remote_port_t, irp,
1802 int, (cmd->cmd_type != FCT_CMD_RCVD_ELS));
1803
1804 } else {
1805 DTRACE_FC_4(rport__logout__end,
1806 fct_cmd_t, cmd,
1807 fct_local_port_t, port,
1808 fct_i_remote_port_t, irp,
1809 int, (cmd->cmd_type != FCT_CMD_RCVD_ELS));
1810
1811 fct_cmd_free(cmd);
1812 }
1813
1814 irp->irp_deregister_timer = ddi_get_lbolt() +
1815 drv_usectohz(USEC_DEREG_RP_TIMEOUT);
1816 irp->irp_dereg_count = 0;
1817
1818 /* Do not touch cmd here as it may have been freed */
1819
1820 ASSERT(irp->irp_flags & IRP_IN_DISCOVERY_QUEUE);
1821
1822 return (DISC_ACTION_RESCAN);
1823 }
1824
1825 disc_action_t
fct_process_prlo(fct_i_cmd_t * icmd)1826 fct_process_prlo(fct_i_cmd_t *icmd)
1827 {
1828 fct_cmd_t *cmd = icmd->icmd_cmd;
1829 fct_remote_port_t *rp = cmd->cmd_rp;
1830 fct_local_port_t *port = cmd->cmd_port;
1831 fct_i_local_port_t *iport = (fct_i_local_port_t *)
1832 port->port_fct_private;
1833 fct_i_remote_port_t *irp = (fct_i_remote_port_t *)
1834 rp->rp_fct_private;
1835 fct_status_t ret;
1836 clock_t end_time;
1837 char info[FCT_INFO_LEN];
1838
1839 /* We do not support solicited PRLOs yet */
1840 ASSERT(cmd->cmd_type == FCT_CMD_RCVD_ELS);
1841
1842 /* Drain I/Os */
1843 if (irp->irp_fcp_xchg_count) {
1844 /* Trigger cleanup if necessary */
1845 if ((irp->irp_flags & IRP_FCP_CLEANUP) == 0) {
1846 stmf_trace(iport->iport_alias, "handling LOGO from"
1847 " %x. Triggering cleanup", cmd->cmd_rportid);
1848 /* Cleanup everything except elses */
1849 if (fct_trigger_rport_cleanup(irp, FCT_CMD_FCP_XCHG)) {
1850 atomic_or_32(&irp->irp_flags,
1851 IRP_FCP_CLEANUP);
1852 } else {
1853 /* XXX: need more handling */
1854 return (DISC_ACTION_DELAY_RESCAN);
1855 }
1856 }
1857
1858 end_time = icmd->icmd_start_time +
1859 drv_usectohz(USEC_ELS_TIMEOUT);
1860 if (ddi_get_lbolt() > end_time) {
1861 (void) snprintf(info, sizeof (info),
1862 "fct_process_prlo: unable to "
1863 "clean up I/O. iport-%p, icmd-%p", (void *)iport,
1864 (void *)icmd);
1865 (void) fct_port_shutdown(iport->iport_port,
1866 STMF_RFLAG_FATAL_ERROR | STMF_RFLAG_RESET, info);
1867
1868 return (DISC_ACTION_DELAY_RESCAN);
1869 }
1870
1871 if ((ddi_get_lbolt() & 0x7f) == 0) {
1872 stmf_trace(iport->iport_alias, "handling"
1873 " PRLO from %x, waiting for cmds to"
1874 " drain", cmd->cmd_rportid);
1875 }
1876 return (DISC_ACTION_DELAY_RESCAN);
1877 }
1878 atomic_and_32(&irp->irp_flags, ~IRP_FCP_CLEANUP);
1879
1880 /* Session can only be terminated after all the I/Os have drained */
1881 if (irp->irp_flags & IRP_SCSI_SESSION_STARTED) {
1882 stmf_deregister_scsi_session(iport->iport_port->port_lport,
1883 irp->irp_session);
1884 stmf_free(irp->irp_session);
1885 irp->irp_session = NULL;
1886 atomic_and_32(&irp->irp_flags, ~IRP_SCSI_SESSION_STARTED);
1887 }
1888
1889 fct_dequeue_els(irp);
1890 atomic_dec_16(&irp->irp_sa_elses_count);
1891 ret = fct_send_accrjt(cmd, ELS_OP_ACC, 0, 0);
1892 if (ret != FCT_SUCCESS)
1893 fct_queue_cmd_for_termination(cmd, ret);
1894
1895 return (DISC_ACTION_RESCAN);
1896 }
1897
1898 disc_action_t
fct_process_rcvd_adisc(fct_i_cmd_t * icmd)1899 fct_process_rcvd_adisc(fct_i_cmd_t *icmd)
1900 {
1901 fct_cmd_t *cmd = icmd->icmd_cmd;
1902 fct_remote_port_t *rp = cmd->cmd_rp;
1903 fct_local_port_t *port = cmd->cmd_port;
1904 fct_i_local_port_t *iport = (fct_i_local_port_t *)
1905 port->port_fct_private;
1906 fct_els_t *els = (fct_els_t *)
1907 cmd->cmd_specific;
1908 fct_i_remote_port_t *irp = (fct_i_remote_port_t *)
1909 rp->rp_fct_private;
1910 uint8_t *p;
1911 uint32_t *q;
1912 fct_status_t ret;
1913
1914 fct_dequeue_els(irp);
1915 atomic_dec_16(&irp->irp_nsa_elses_count);
1916
1917 /* Validate the adisc request */
1918 p = els->els_req_payload;
1919 q = (uint32_t *)p;
1920 if ((els->els_req_size != 28) || (bcmp(rp->rp_pwwn, p + 8, 8)) ||
1921 (bcmp(rp->rp_nwwn, p + 16, 8))) {
1922 ret = fct_send_accrjt(cmd, ELS_OP_LSRJT, 3, 0);
1923 } else {
1924 rp->rp_hard_address = BE_32(q[1]);
1925 els->els_resp_size = els->els_resp_alloc_size = 28;
1926 els->els_resp_payload = (uint8_t *)kmem_zalloc(28, KM_SLEEP);
1927 bcopy(p, els->els_resp_payload, 28);
1928 p = els->els_resp_payload;
1929 q = (uint32_t *)p;
1930 p[0] = ELS_OP_ACC;
1931 q[1] = BE_32(port->port_hard_address);
1932 bcopy(port->port_pwwn, p + 8, 8);
1933 bcopy(port->port_nwwn, p + 16, 8);
1934 q[6] = BE_32(iport->iport_link_info.portid);
1935 ret = port->port_send_cmd_response(cmd, 0);
1936 }
1937 if (ret != FCT_SUCCESS) {
1938 fct_queue_cmd_for_termination(cmd, ret);
1939 }
1940
1941 return (DISC_ACTION_RESCAN);
1942 }
1943
1944 disc_action_t
fct_process_unknown_els(fct_i_cmd_t * icmd)1945 fct_process_unknown_els(fct_i_cmd_t *icmd)
1946 {
1947 fct_i_local_port_t *iport = ICMD_TO_IPORT(icmd);
1948 fct_status_t ret = FCT_FAILURE;
1949 uint8_t op = 0;
1950
1951 ASSERT(icmd->icmd_cmd->cmd_type == FCT_CMD_RCVD_ELS);
1952 fct_dequeue_els(ICMD_TO_IRP(icmd));
1953 atomic_dec_16(&ICMD_TO_IRP(icmd)->irp_nsa_elses_count);
1954 op = ICMD_TO_ELS(icmd)->els_req_payload[0];
1955 stmf_trace(iport->iport_alias, "Rejecting unknown unsol els %x (%s)",
1956 op, FCT_ELS_NAME(op));
1957 ret = fct_send_accrjt(icmd->icmd_cmd, ELS_OP_LSRJT, 1, 0);
1958 if (ret != FCT_SUCCESS) {
1959 fct_queue_cmd_for_termination(icmd->icmd_cmd, ret);
1960 }
1961
1962 return (DISC_ACTION_RESCAN);
1963 }
1964
1965 disc_action_t
fct_process_rscn(fct_i_cmd_t * icmd)1966 fct_process_rscn(fct_i_cmd_t *icmd)
1967 {
1968 fct_i_local_port_t *iport = ICMD_TO_IPORT(icmd);
1969 fct_status_t ret = FCT_FAILURE;
1970 uint8_t op = 0;
1971 uint8_t *rscn_req_payload;
1972 uint32_t rscn_req_size;
1973
1974 fct_dequeue_els(ICMD_TO_IRP(icmd));
1975 atomic_dec_16(&ICMD_TO_IRP(icmd)->irp_nsa_elses_count);
1976 if (icmd->icmd_cmd->cmd_type == FCT_CMD_RCVD_ELS) {
1977 op = ICMD_TO_ELS(icmd)->els_req_payload[0];
1978 stmf_trace(iport->iport_alias, "Accepting RSCN %x (%s)",
1979 op, FCT_ELS_NAME(op));
1980 rscn_req_size = ICMD_TO_ELS(icmd)->els_req_size;
1981 rscn_req_payload = kmem_alloc(rscn_req_size, KM_SLEEP);
1982 bcopy(ICMD_TO_ELS(icmd)->els_req_payload, rscn_req_payload,
1983 rscn_req_size);
1984 ret = fct_send_accrjt(icmd->icmd_cmd, ELS_OP_ACC, 1, 0);
1985 if (ret != FCT_SUCCESS) {
1986 fct_queue_cmd_for_termination(icmd->icmd_cmd, ret);
1987 } else {
1988 if (fct_rscn_options & RSCN_OPTION_VERIFY) {
1989 fct_rscn_verify(iport, rscn_req_payload,
1990 rscn_req_size);
1991 }
1992 }
1993
1994 kmem_free(rscn_req_payload, rscn_req_size);
1995 } else {
1996 ASSERT(0);
1997 }
1998
1999 return (DISC_ACTION_RESCAN);
2000 }
2001
2002 disc_action_t
fct_process_els(fct_i_local_port_t * iport,fct_i_remote_port_t * irp)2003 fct_process_els(fct_i_local_port_t *iport, fct_i_remote_port_t *irp)
2004 {
2005 fct_i_cmd_t *cmd_to_abort = NULL;
2006 fct_i_cmd_t **ppcmd, *icmd;
2007 fct_cmd_t *cmd;
2008 fct_els_t *els;
2009 int dq;
2010 disc_action_t ret = DISC_ACTION_NO_WORK;
2011 uint8_t op;
2012
2013 mutex_exit(&iport->iport_worker_lock);
2014
2015 /*
2016 * Do some cleanup based on the following.
2017 * - We can only have one session affecting els pending.
2018 * - If any session affecting els is pending no other els is allowed.
2019 * - If PLOGI is not done, nothing except PLOGI or LOGO is allowed.
2020 * NOTE: If port is down the cleanup is done outside of this
2021 * function.
2022 * NOTE: There is a side effect, if a sa ELS (non PLOGI) is received
2023 * while a PLOGI is pending, it will kill itself and the PLOGI.
2024 * which is probably ok.
2025 */
2026 rw_enter(&irp->irp_lock, RW_WRITER);
2027 ppcmd = &irp->irp_els_list;
2028 while ((*ppcmd) != NULL) {
2029 int special_prli_cond = 0;
2030 dq = 0;
2031
2032 els = (fct_els_t *)((*ppcmd)->icmd_cmd)->cmd_specific;
2033
2034 if (((*ppcmd)->icmd_cmd->cmd_type == FCT_CMD_RCVD_ELS) &&
2035 (els->els_req_payload[0] == ELS_OP_PRLI) &&
2036 (irp->irp_flags & IRP_SOL_PLOGI_IN_PROGRESS)) {
2037 /*
2038 * The initiator sent a PRLI right after responding
2039 * to PLOGI and we have not yet finished processing
2040 * the PLOGI completion. We should not kill the PRLI
2041 * as the initiator may not retry it.
2042 */
2043 special_prli_cond = 1;
2044 }
2045
2046 if ((*ppcmd)->icmd_flags & ICMD_BEING_ABORTED) {
2047 dq = 1;
2048 } else if (irp->irp_sa_elses_count > 1) {
2049 dq = 1;
2050 /* This els might have set the CLEANUP flag */
2051 atomic_and_32(&irp->irp_flags, ~IRP_SESSION_CLEANUP);
2052 stmf_trace(iport->iport_alias, "Killing ELS %x cond 1",
2053 els->els_req_payload[0]);
2054 } else if (irp->irp_sa_elses_count &&
2055 (((*ppcmd)->icmd_flags & ICMD_SESSION_AFFECTING) == 0)) {
2056 stmf_trace(iport->iport_alias, "Killing ELS %x cond 2",
2057 els->els_req_payload[0]);
2058 dq = 1;
2059 } else if (((irp->irp_flags & IRP_PLOGI_DONE) == 0) &&
2060 (els->els_req_payload[0] != ELS_OP_PLOGI) &&
2061 (els->els_req_payload[0] != ELS_OP_LOGO) &&
2062 (special_prli_cond == 0)) {
2063 stmf_trace(iport->iport_alias, "Killing ELS %x cond 3",
2064 els->els_req_payload[0]);
2065 dq = 1;
2066 }
2067
2068 if (dq) {
2069 fct_i_cmd_t *c = (*ppcmd)->icmd_next;
2070
2071 if ((*ppcmd)->icmd_flags & ICMD_SESSION_AFFECTING)
2072 atomic_dec_16(&irp->irp_sa_elses_count);
2073 else
2074 atomic_dec_16(&irp->irp_nsa_elses_count);
2075 (*ppcmd)->icmd_next = cmd_to_abort;
2076 cmd_to_abort = *ppcmd;
2077 *ppcmd = c;
2078 } else {
2079 ppcmd = &((*ppcmd)->icmd_next);
2080 }
2081 }
2082 rw_exit(&irp->irp_lock);
2083
2084 while (cmd_to_abort) {
2085 fct_i_cmd_t *c = cmd_to_abort->icmd_next;
2086
2087 atomic_and_32(&cmd_to_abort->icmd_flags, ~ICMD_IN_IRP_QUEUE);
2088 fct_queue_cmd_for_termination(cmd_to_abort->icmd_cmd,
2089 FCT_ABORTED);
2090 cmd_to_abort = c;
2091 }
2092
2093 /*
2094 * pick from the top of the queue
2095 */
2096 icmd = irp->irp_els_list;
2097 if (icmd == NULL) {
2098 /*
2099 * The cleanup took care of everything.
2100 */
2101
2102 mutex_enter(&iport->iport_worker_lock);
2103 return (DISC_ACTION_RESCAN);
2104 }
2105
2106 cmd = icmd->icmd_cmd;
2107 els = ICMD_TO_ELS(icmd);
2108 op = els->els_req_payload[0];
2109 if ((icmd->icmd_flags & ICMD_ELS_PROCESSING_STARTED) == 0) {
2110 stmf_trace(iport->iport_alias, "Processing %ssol ELS %x (%s) "
2111 "rp_id=%x", (cmd->cmd_type == FCT_CMD_RCVD_ELS) ? "un" : "",
2112 op, FCT_ELS_NAME(op), cmd->cmd_rportid);
2113 atomic_or_32(&icmd->icmd_flags, ICMD_ELS_PROCESSING_STARTED);
2114 }
2115
2116 if (op == ELS_OP_PLOGI) {
2117 ret |= fct_process_plogi(icmd);
2118 } else if (op == ELS_OP_PRLI) {
2119 ret |= fct_process_prli(icmd);
2120 } else if (op == ELS_OP_LOGO) {
2121 ret |= fct_process_logo(icmd);
2122 } else if ((op == ELS_OP_PRLO) || (op == ELS_OP_TPRLO)) {
2123 ret |= fct_process_prlo(icmd);
2124 } else if (cmd->cmd_type == FCT_CMD_SOL_ELS) {
2125 fct_status_t s;
2126 fct_local_port_t *port = iport->iport_port;
2127
2128 fct_dequeue_els(irp);
2129 atomic_dec_16(&irp->irp_nsa_elses_count);
2130 atomic_or_32(&icmd->icmd_flags, ICMD_KNOWN_TO_FCA);
2131 if ((s = port->port_send_cmd(cmd)) != FCT_SUCCESS) {
2132 atomic_and_32(&icmd->icmd_flags, ~ICMD_KNOWN_TO_FCA);
2133 fct_queue_cmd_for_termination(cmd, s);
2134 stmf_trace(iport->iport_alias, "Solicited els "
2135 "transport failed, ret = %llx", s);
2136 }
2137 } else if (op == ELS_OP_ADISC) {
2138 ret |= fct_process_rcvd_adisc(icmd);
2139 } else if (op == ELS_OP_RSCN) {
2140 (void) fct_process_rscn(icmd);
2141 } else {
2142 (void) fct_process_unknown_els(icmd);
2143 }
2144
2145 /*
2146 * This if condition will be false if a sa ELS trigged a cleanup
2147 * and set the ret = DISC_ACTION_DELAY_RESCAN. In that case we should
2148 * keep it that way.
2149 */
2150 if (ret == DISC_ACTION_NO_WORK) {
2151 /*
2152 * Since we dropped the lock, we will force a rescan. The
2153 * only exception is if someone returned
2154 * DISC_ACTION_DELAY_RESCAN, in which case that should be the
2155 * return value.
2156 */
2157 ret = DISC_ACTION_RESCAN;
2158 }
2159
2160 mutex_enter(&iport->iport_worker_lock);
2161 return (ret);
2162 }
2163
2164 void
fct_handle_sol_els_completion(fct_i_local_port_t * iport,fct_i_cmd_t * icmd)2165 fct_handle_sol_els_completion(fct_i_local_port_t *iport, fct_i_cmd_t *icmd)
2166 {
2167 fct_i_remote_port_t *irp = NULL;
2168 fct_els_t *els = ICMD_TO_ELS(icmd);
2169 uint8_t op = els->els_req_payload[0];
2170
2171 if (icmd->icmd_cmd->cmd_rp) {
2172 irp = ICMD_TO_IRP(icmd);
2173 }
2174 if (icmd->icmd_cmd->cmd_rp &&
2175 (icmd->icmd_cmd->cmd_comp_status == FCT_SUCCESS) &&
2176 (els->els_req_payload[0] == ELS_OP_PLOGI)) {
2177 bcopy(els->els_resp_payload + 20, irp->irp_rp->rp_pwwn, 8);
2178 bcopy(els->els_resp_payload + 28, irp->irp_rp->rp_nwwn, 8);
2179
2180 stmf_wwn_to_devid_desc((scsi_devid_desc_t *)irp->irp_id,
2181 irp->irp_rp->rp_pwwn, PROTOCOL_FIBRE_CHANNEL);
2182 atomic_or_32(&irp->irp_flags, IRP_PLOGI_DONE);
2183 atomic_inc_32(&iport->iport_nrps_login);
2184 if (irp->irp_deregister_timer) {
2185 irp->irp_deregister_timer = 0;
2186 irp->irp_dereg_count = 0;
2187 }
2188 }
2189
2190 if (irp && (els->els_req_payload[0] == ELS_OP_PLOGI)) {
2191 atomic_and_32(&irp->irp_flags, ~IRP_SOL_PLOGI_IN_PROGRESS);
2192 }
2193 atomic_or_32(&icmd->icmd_flags, ICMD_CMD_COMPLETE);
2194 stmf_trace(iport->iport_alias, "Sol ELS %x (%s) completed with "
2195 "status %llx, did/%x", op, FCT_ELS_NAME(op),
2196 icmd->icmd_cmd->cmd_comp_status, icmd->icmd_cmd->cmd_rportid);
2197 }
2198
2199 static disc_action_t
fct_check_cmdlist(fct_i_local_port_t * iport)2200 fct_check_cmdlist(fct_i_local_port_t *iport)
2201 {
2202 int num_to_release, ndx;
2203 fct_i_cmd_t *icmd;
2204 uint32_t total, max_active;
2205
2206 ASSERT(MUTEX_HELD(&iport->iport_worker_lock));
2207
2208 total = iport->iport_total_alloced_ncmds;
2209 max_active = iport->iport_max_active_ncmds;
2210
2211 if (total <= max_active)
2212 return (DISC_ACTION_NO_WORK);
2213 /*
2214 * Everytime, we release half of the difference
2215 */
2216 num_to_release = (total + 1 - max_active) / 2;
2217
2218 mutex_exit(&iport->iport_worker_lock);
2219 for (ndx = 0; ndx < num_to_release; ndx++) {
2220 mutex_enter(&iport->iport_cached_cmd_lock);
2221 icmd = iport->iport_cached_cmdlist;
2222 if (icmd == NULL) {
2223 mutex_exit(&iport->iport_cached_cmd_lock);
2224 break;
2225 }
2226 iport->iport_cached_cmdlist = icmd->icmd_next;
2227 iport->iport_cached_ncmds--;
2228 mutex_exit(&iport->iport_cached_cmd_lock);
2229 atomic_dec_32(&iport->iport_total_alloced_ncmds);
2230 fct_free(icmd->icmd_cmd);
2231 }
2232 mutex_enter(&iport->iport_worker_lock);
2233 return (DISC_ACTION_RESCAN);
2234 }
2235
2236 /*
2237 * The efficiency of handling solicited commands is very low here. But
2238 * fortunately, we seldom send solicited commands. So it will not hurt
2239 * the system performance much.
2240 */
2241 static disc_action_t
fct_check_solcmd_queue(fct_i_local_port_t * iport)2242 fct_check_solcmd_queue(fct_i_local_port_t *iport)
2243 {
2244 fct_i_cmd_t *icmd = NULL;
2245 fct_i_cmd_t *prev_icmd = NULL;
2246 fct_i_cmd_t *next_icmd = NULL;
2247
2248 ASSERT(mutex_owned(&iport->iport_worker_lock));
2249 for (icmd = iport->iport_solcmd_queue; icmd; icmd = next_icmd) {
2250 ASSERT(icmd->icmd_flags | ICMD_IN_SOLCMD_QUEUE);
2251 next_icmd = icmd->icmd_solcmd_next;
2252 if (icmd->icmd_flags & ICMD_SOLCMD_NEW) {
2253 /*
2254 * This solicited cmd is new.
2255 * Dispatch ELSes to discovery queue to make use of
2256 * existent framework.
2257 */
2258 icmd->icmd_flags &= ~ICMD_SOLCMD_NEW;
2259 mutex_exit(&iport->iport_worker_lock);
2260
2261 if (icmd->icmd_cmd->cmd_type == FCT_CMD_SOL_ELS) {
2262 fct_handle_els(icmd->icmd_cmd);
2263 } else {
2264 fct_handle_solct(icmd->icmd_cmd);
2265 }
2266
2267 mutex_enter(&iport->iport_worker_lock);
2268 } else if (icmd->icmd_flags & ICMD_CMD_COMPLETE) {
2269 /*
2270 * To make fct_check_solcmd simple and flexible,
2271 * We need only call callback to finish post-handling.
2272 */
2273 if (icmd->icmd_cb) {
2274 /*
2275 * mutex ???
2276 */
2277 icmd->icmd_cb(icmd);
2278 }
2279
2280
2281 /*
2282 * Release resources for this solicited cmd
2283 */
2284 if (iport->iport_solcmd_queue == icmd) {
2285 iport->iport_solcmd_queue = next_icmd;
2286 } else {
2287 prev_icmd = iport->iport_solcmd_queue;
2288 while (prev_icmd->icmd_solcmd_next != icmd) {
2289 prev_icmd = prev_icmd->icmd_solcmd_next;
2290 }
2291 prev_icmd->icmd_solcmd_next = next_icmd;
2292 }
2293
2294 icmd->icmd_cb = NULL;
2295 mutex_exit(&iport->iport_worker_lock);
2296 fct_cmd_free(icmd->icmd_cmd);
2297 mutex_enter(&iport->iport_worker_lock);
2298 } else {
2299 /*
2300 * This solicited cmd is still ongoing.
2301 * We need check if it's time to abort this cmd
2302 */
2303 if (((icmd->icmd_start_time + drv_usectohz(
2304 USEC_SOL_TIMEOUT)) < ddi_get_lbolt()) &&
2305 !(icmd->icmd_flags & ICMD_BEING_ABORTED)) {
2306 fct_q_for_termination_lock_held(iport,
2307 icmd, FCT_ABORTED);
2308 }
2309 }
2310 }
2311
2312 return (DISC_ACTION_DELAY_RESCAN);
2313 }
2314
2315 void
fct_handle_solct(fct_cmd_t * cmd)2316 fct_handle_solct(fct_cmd_t *cmd)
2317 {
2318 fct_status_t ret = FCT_SUCCESS;
2319 fct_i_cmd_t *icmd = CMD_TO_ICMD(cmd);
2320 fct_i_local_port_t *iport = ICMD_TO_IPORT(icmd);
2321 fct_i_remote_port_t *irp = ICMD_TO_IRP(icmd);
2322
2323 ASSERT(cmd->cmd_type == FCT_CMD_SOL_CT);
2324 rw_enter(&iport->iport_lock, RW_READER);
2325 /*
2326 * Let's make sure local port is sane
2327 */
2328 if ((iport->iport_link_state & S_LINK_ONLINE) == 0) {
2329 rw_exit(&iport->iport_lock);
2330
2331 stmf_trace(iport->iport_alias, "fct_transport_solct: "
2332 "solcmd-%p transport failed, becasue port state was %x",
2333 cmd, iport->iport_link_state);
2334 fct_queue_cmd_for_termination(cmd, FCT_LOCAL_PORT_OFFLINE);
2335 return;
2336 }
2337
2338 /*
2339 * Let's make sure we have plogi-ed to name server
2340 */
2341 rw_enter(&irp->irp_lock, RW_READER);
2342 if (!(irp->irp_flags & IRP_PLOGI_DONE)) {
2343 rw_exit(&irp->irp_lock);
2344 rw_exit(&iport->iport_lock);
2345
2346 stmf_trace(iport->iport_alias, "fct_transport_solct: "
2347 "Must login to name server first - cmd-%p", cmd);
2348 fct_queue_cmd_for_termination(cmd, FCT_NOT_LOGGED_IN);
2349 return;
2350 }
2351
2352 /*
2353 * Let's get a slot for this solcmd
2354 */
2355 if (fct_alloc_cmd_slot(iport, cmd) == FCT_SLOT_EOL) {
2356 rw_exit(&irp->irp_lock);
2357 rw_exit(&iport->iport_lock);
2358
2359 stmf_trace(iport->iport_alias, "fct_transport_solcmd: "
2360 "ran out of xchg resources - cmd-%p", cmd);
2361 fct_queue_cmd_for_termination(cmd, FCT_NO_XCHG_RESOURCE);
2362 return;
2363 }
2364
2365 if (fct_netbuf_to_value(ICMD_TO_CT(icmd)->ct_req_payload + 8, 2) ==
2366 NS_GID_PN) {
2367 fct_i_remote_port_t *query_irp = NULL;
2368
2369 query_irp = fct_lookup_irp_by_portwwn(iport,
2370 ICMD_TO_CT(icmd)->ct_req_payload + 16);
2371 if (query_irp) {
2372 atomic_and_32(&query_irp->irp_flags, ~IRP_RSCN_QUEUED);
2373 }
2374 }
2375 rw_exit(&irp->irp_lock);
2376 rw_exit(&iport->iport_lock);
2377
2378 atomic_inc_16(&irp->irp_nonfcp_xchg_count);
2379 atomic_or_32(&icmd->icmd_flags, ICMD_KNOWN_TO_FCA);
2380 icmd->icmd_start_time = ddi_get_lbolt();
2381 ret = iport->iport_port->port_send_cmd(cmd);
2382 if (ret != FCT_SUCCESS) {
2383 atomic_and_32(&icmd->icmd_flags, ~ICMD_KNOWN_TO_FCA);
2384 fct_queue_cmd_for_termination(cmd, ret);
2385 }
2386 }
2387
2388 void
fct_logo_cb(fct_i_cmd_t * icmd)2389 fct_logo_cb(fct_i_cmd_t *icmd)
2390 {
2391 ASSERT(!(icmd->icmd_flags & ICMD_IMPLICIT));
2392 if (!FCT_IS_ELS_ACC(icmd)) {
2393 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias, "fct_logo_cb: "
2394 "solicited LOGO is not accepted - icmd/%p", icmd);
2395 }
2396 }
2397
2398 void
fct_gsnn_cb(fct_i_cmd_t * icmd)2399 fct_gsnn_cb(fct_i_cmd_t *icmd)
2400 {
2401 int snlen = 0;
2402 char *sn = NULL;
2403 fct_i_remote_port_t *query_irp = NULL;
2404
2405 if (!FCT_IS_CT_ACC(icmd)) {
2406 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias, "fct_gsnn_cb: "
2407 "GSNN is not accepted by NS - icmd/%p", icmd);
2408 return;
2409 }
2410 mutex_exit(&ICMD_TO_IPORT(icmd)->iport_worker_lock);
2411
2412 rw_enter(&ICMD_TO_IPORT(icmd)->iport_lock, RW_READER);
2413 mutex_enter(&ICMD_TO_IPORT(icmd)->iport_worker_lock);
2414 query_irp = fct_lookup_irp_by_nodewwn(ICMD_TO_IPORT(icmd),
2415 ICMD_TO_CT(icmd)->ct_req_payload + 16);
2416
2417 if (!query_irp) {
2418 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias, "fct_gsnn_cb: "
2419 "can't get rp icmd-%p", icmd);
2420 goto exit_gsnn_cb;
2421 } else {
2422 snlen = ICMD_TO_CT(icmd)->ct_resp_payload[16];
2423 }
2424
2425 if (query_irp && snlen) {
2426 /*
2427 * Release previous resource, then allocate needed resource
2428 */
2429 sn = query_irp->irp_snn;
2430 if (sn) {
2431 kmem_free(sn, strlen(sn) + 1);
2432 }
2433
2434 query_irp->irp_snn = NULL;
2435 sn = kmem_zalloc(snlen + 1, KM_SLEEP);
2436 (void) strncpy(sn, (char *)
2437 ICMD_TO_CT(icmd)->ct_resp_payload + 17, snlen);
2438 if (strlen(sn) != snlen) {
2439 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias,
2440 "fct_gsnn_cb: %s, but len=%d", sn, snlen);
2441 kmem_free(sn, snlen + 1);
2442 sn = NULL;
2443 }
2444
2445 /*
2446 * Update symbolic node name
2447 */
2448 query_irp->irp_snn = sn;
2449 if ((query_irp->irp_flags & IRP_SCSI_SESSION_STARTED) &&
2450 (query_irp->irp_session)) {
2451 query_irp->irp_session->ss_rport_alias =
2452 query_irp->irp_snn;
2453 }
2454 } else {
2455 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias, "fct_gsnn_cb: "
2456 "irp/%p, snlen/%d", query_irp, snlen);
2457 }
2458
2459 exit_gsnn_cb:
2460 rw_exit(&ICMD_TO_IPORT(icmd)->iport_lock);
2461 }
2462
2463 void
fct_link_init_cb(fct_i_cmd_t * icmd)2464 fct_link_init_cb(fct_i_cmd_t *icmd)
2465 {
2466 fct_i_local_port_t *iport = ICMD_TO_IPORT(icmd);
2467
2468 iport->iport_li_state &= ~LI_STATE_FLAG_CMD_WAITING;
2469 if (icmd->icmd_cmd->cmd_comp_status != FCT_SUCCESS) {
2470 stmf_trace(iport->iport_alias, "fct_link_init_cb: ELS-%x failed"
2471 "comp_status- %llx", ICMD_TO_ELS(icmd)->els_req_payload[0],
2472 icmd->icmd_cmd->cmd_comp_status);
2473 iport->iport_li_comp_status = icmd->icmd_cmd->cmd_comp_status;
2474 } else if (icmd->icmd_cmd->cmd_type == FCT_CMD_SOL_ELS) {
2475 if (!FCT_IS_ELS_ACC(icmd)) {
2476 stmf_trace(iport->iport_alias,
2477 "fct_link_init_cb: ELS-%x is rejected",
2478 ICMD_TO_ELS(icmd)->els_req_payload[0]);
2479 iport->iport_li_comp_status = FCT_REJECT_STATUS(
2480 ICMD_TO_ELS(icmd)->els_resp_payload[1],
2481 ICMD_TO_ELS(icmd)->els_resp_payload[2]);
2482 } else {
2483 iport->iport_li_comp_status = FCT_SUCCESS;
2484 }
2485 } else {
2486 ASSERT(icmd->icmd_cmd->cmd_type == FCT_CMD_SOL_CT);
2487 if (!FCT_IS_CT_ACC(icmd)) {
2488 stmf_trace(iport->iport_alias,
2489 "fct_link_init_cb: CT-%02x%02x is rejected",
2490 ICMD_TO_CT(icmd)->ct_req_payload[8],
2491 ICMD_TO_CT(icmd)->ct_req_payload[9]);
2492 iport->iport_li_comp_status = FCT_REJECT_STATUS(
2493 ICMD_TO_CT(icmd)->ct_resp_payload[8],
2494 ICMD_TO_CT(icmd)->ct_resp_payload[9]);
2495 } else {
2496 iport->iport_li_comp_status = FCT_SUCCESS;
2497 }
2498 }
2499 }
2500
2501 void
fct_gcs_cb(fct_i_cmd_t * icmd)2502 fct_gcs_cb(fct_i_cmd_t *icmd)
2503 {
2504 fct_sol_ct_t *ct = ICMD_TO_CT(icmd);
2505 fct_i_remote_port_t *query_irp = NULL;
2506 fct_i_local_port_t *iport = ICMD_TO_IPORT(icmd);
2507 uint32_t query_portid;
2508 uint8_t *resp;
2509 uint8_t *req;
2510
2511 if (!FCT_IS_CT_ACC(icmd)) {
2512 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias, "fct_gcs_cb: "
2513 "GCS_ID is not accepted by NS - icmd/%p", icmd);
2514 return;
2515 }
2516 mutex_exit(&iport->iport_worker_lock);
2517
2518 resp = ct->ct_resp_payload;
2519 req = ct->ct_req_payload;
2520 query_portid = (req[17] << 16) | (req[18] << 8) | req[19];
2521
2522 rw_enter(&iport->iport_lock, RW_READER);
2523 mutex_enter(&iport->iport_worker_lock);
2524 query_irp = fct_portid_to_portptr(iport, query_portid);
2525
2526 if (query_irp) {
2527 query_irp->irp_cos = (resp[16] << 27) | (resp[17] << 18) |
2528 (resp[18] << 8) | resp[19];
2529 }
2530 rw_exit(&iport->iport_lock);
2531 }
2532
2533 void
fct_gft_cb(fct_i_cmd_t * icmd)2534 fct_gft_cb(fct_i_cmd_t *icmd)
2535 {
2536 fct_sol_ct_t *ct = ICMD_TO_CT(icmd);
2537 fct_i_remote_port_t *query_irp = NULL;
2538 fct_i_local_port_t *iport = ICMD_TO_IPORT(icmd);
2539 uint32_t query_portid;
2540 uint8_t *resp;
2541 uint8_t *req;
2542
2543 if (!FCT_IS_CT_ACC(icmd)) {
2544 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias, "fct_gft_cb: "
2545 "GFT_ID is not accepted by NS - icmd/%p", icmd);
2546 return;
2547 }
2548 mutex_exit(&iport->iport_worker_lock);
2549
2550 resp = ct->ct_resp_payload;
2551 req = ct->ct_req_payload;
2552 query_portid = (req[17] << 16) | (req[18] << 8) | req[19];
2553
2554 rw_enter(&iport->iport_lock, RW_READER);
2555 mutex_enter(&iport->iport_worker_lock);
2556 query_irp = fct_portid_to_portptr(iport, query_portid);
2557
2558 if (query_irp) {
2559 (void) memcpy(query_irp->irp_fc4types, resp + 16, 32);
2560 }
2561 rw_exit(&iport->iport_lock);
2562 }
2563
2564 void
fct_gid_cb(fct_i_cmd_t * icmd)2565 fct_gid_cb(fct_i_cmd_t *icmd)
2566 {
2567 fct_cmd_t *cmd = NULL;
2568 fct_i_remote_port_t *query_irp = NULL;
2569 uint32_t nsportid = 0;
2570 int do_logo = 0;
2571
2572 mutex_exit(&ICMD_TO_IPORT(icmd)->iport_worker_lock);
2573
2574 rw_enter(&ICMD_TO_IPORT(icmd)->iport_lock, RW_READER);
2575 mutex_enter(&ICMD_TO_IPORT(icmd)->iport_worker_lock);
2576 query_irp = fct_lookup_irp_by_portwwn(ICMD_TO_IPORT(icmd),
2577 ICMD_TO_CT(icmd)->ct_req_payload + 16);
2578
2579 if (!query_irp || (query_irp &&
2580 (PTR2INT(icmd->icmd_cb_private, uint32_t) !=
2581 query_irp->irp_rscn_counter))) {
2582 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias, "fct_gid_cb: "
2583 "new RSCN arrived - query_irp/%p, private-%x", query_irp,
2584 PTR2INT(icmd->icmd_cb_private, uint32_t));
2585 goto exit_gid_cb;
2586 }
2587
2588 if ((query_irp->irp_flags & IRP_RSCN_QUEUED) ||
2589 (!(query_irp->irp_flags & IRP_PLOGI_DONE))) {
2590 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias, "fct_gid_cb: "
2591 "not proper irp_flags - query_irp/%p", query_irp);
2592 goto exit_gid_cb;
2593 }
2594
2595 if (!FCT_IS_CT_ACC(icmd)) {
2596 /*
2597 * Check if it has disappeared
2598 */
2599 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias, "fct_gid_cb: "
2600 "GPN_ID is not accepted by NS - icmd/%p", icmd);
2601 do_logo = 1;
2602 } else {
2603 /*
2604 * Check if its portid has changed
2605 */
2606 nsportid = fct_netbuf_to_value(
2607 ICMD_TO_CT(icmd)->ct_resp_payload + 17, 3);
2608 if (nsportid != query_irp->irp_rp->rp_id) {
2609 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias,
2610 "portid has changed - query_irp/%p", query_irp);
2611 do_logo = 1;
2612 }
2613 }
2614
2615 if (do_logo) {
2616 cmd = fct_create_solels(ICMD_TO_PORT(icmd),
2617 query_irp->irp_rp, 1, ELS_OP_LOGO, 0, fct_logo_cb);
2618 if (cmd) {
2619 mutex_exit(&ICMD_TO_IPORT(icmd)->iport_worker_lock);
2620 fct_post_implicit_logo(cmd);
2621 mutex_enter(&ICMD_TO_IPORT(icmd)->iport_worker_lock);
2622 }
2623 }
2624
2625 exit_gid_cb:
2626 rw_exit(&ICMD_TO_IPORT(icmd)->iport_lock);
2627 }
2628
2629 void
fct_gspn_cb(fct_i_cmd_t * icmd)2630 fct_gspn_cb(fct_i_cmd_t *icmd)
2631 {
2632 fct_sol_ct_t *ct = ICMD_TO_CT(icmd);
2633 fct_i_remote_port_t *query_irp = NULL;
2634 fct_i_local_port_t *iport = ICMD_TO_IPORT(icmd);
2635 uint32_t query_portid;
2636 uint8_t *resp;
2637 uint8_t *req;
2638 uint8_t spnlen;
2639
2640 if (!FCT_IS_CT_ACC(icmd)) {
2641 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias, "fct_gspn_cb: "
2642 "GSPN_ID is not accepted by NS - icmd/%p", icmd);
2643 return;
2644 }
2645 mutex_exit(&iport->iport_worker_lock);
2646
2647 resp = ct->ct_resp_payload;
2648 req = ct->ct_req_payload;
2649 query_portid = (req[17] << 16) | (req[18] << 8) | req[19];
2650
2651 rw_enter(&iport->iport_lock, RW_READER);
2652 mutex_enter(&iport->iport_worker_lock);
2653 query_irp = fct_portid_to_portptr(iport, query_portid);
2654 if (query_irp) {
2655 spnlen = resp[16];
2656 if (spnlen > 0) {
2657 if (query_irp->irp_spn) {
2658 kmem_free(query_irp->irp_spn,
2659 strlen(query_irp->irp_spn) + 1);
2660 }
2661 query_irp->irp_spn = kmem_zalloc(spnlen + 1, KM_SLEEP);
2662 (void) strncpy(query_irp->irp_spn,
2663 (char *)resp + 17, spnlen);
2664 }
2665 }
2666 rw_exit(&iport->iport_lock);
2667 }
2668
2669 void
fct_rls_cb(fct_i_cmd_t * icmd)2670 fct_rls_cb(fct_i_cmd_t *icmd)
2671 {
2672 fct_els_t *els = ICMD_TO_ELS(icmd);
2673 uint8_t *resp;
2674 fct_rls_cb_data_t *rls_cb_data = NULL;
2675 fct_port_link_status_t *rls_resp;
2676 fct_i_local_port_t *iport = ICMD_TO_IPORT(icmd);
2677
2678 rls_cb_data = icmd->icmd_cb_private;
2679
2680 if (!FCT_IS_ELS_ACC(icmd)) {
2681 stmf_trace(ICMD_TO_IPORT(icmd)->iport_alias, "fct_rls_cb: "
2682 "solicited RLS is not accepted - icmd/%p", icmd);
2683 if (rls_cb_data) {
2684 rls_cb_data->fct_els_res = FCT_FAILURE;
2685 sema_v(&iport->iport_rls_sema);
2686 }
2687 return;
2688 }
2689
2690 if (!rls_cb_data) {
2691 sema_v(&iport->iport_rls_sema);
2692 return;
2693 }
2694
2695 resp = els->els_resp_payload;
2696
2697 rls_cb_data = icmd->icmd_cb_private;
2698
2699 /* Get the response and store it somewhere */
2700 rls_resp = (fct_port_link_status_t *)rls_cb_data->fct_link_status;
2701 rls_resp->LinkFailureCount = BE_32(*((uint32_t *)(resp + 4)));
2702 rls_resp->LossOfSyncCount = BE_32(*((uint32_t *)(resp + 8)));
2703 rls_resp->LossOfSignalsCount = BE_32(*((uint32_t *)(resp + 12)));
2704 rls_resp->PrimitiveSeqProtocolErrorCount =
2705 BE_32(*((uint32_t *)(resp + 16)));
2706 rls_resp->InvalidTransmissionWordCount =
2707 BE_32(*((uint32_t *)(resp + 20)));
2708 rls_resp->InvalidCRCCount = BE_32(*((uint32_t *)(resp + 24)));
2709
2710 rls_cb_data->fct_els_res = FCT_SUCCESS;
2711 sema_v(&iport->iport_rls_sema);
2712 icmd->icmd_cb_private = NULL;
2713 }
2714
2715 /*
2716 * For lookup functions, we move locking up one level
2717 */
2718 fct_i_remote_port_t *
fct_lookup_irp_by_nodewwn(fct_i_local_port_t * iport,uint8_t * nodewwn)2719 fct_lookup_irp_by_nodewwn(fct_i_local_port_t *iport, uint8_t *nodewwn)
2720 {
2721 fct_i_remote_port_t *irp = NULL;
2722 int idx = 0;
2723
2724 for (idx = 0; idx < FCT_HASH_TABLE_SIZE; idx++) {
2725 for (irp = iport->iport_rp_tb[idx]; irp;
2726 irp = irp->irp_next) {
2727 if (bcmp(irp->irp_rp->rp_nwwn, nodewwn, FC_WWN_LEN)) {
2728 continue;
2729 } else {
2730 return (irp);
2731 }
2732 }
2733 }
2734
2735 return (NULL);
2736 }
2737
2738 fct_i_remote_port_t *
fct_lookup_irp_by_portwwn(fct_i_local_port_t * iport,uint8_t * portwwn)2739 fct_lookup_irp_by_portwwn(fct_i_local_port_t *iport, uint8_t *portwwn)
2740 {
2741 fct_i_remote_port_t *irp = NULL;
2742 int idx = 0;
2743
2744 for (idx = 0; idx < FCT_HASH_TABLE_SIZE; idx++) {
2745 for (irp = iport->iport_rp_tb[idx]; irp;
2746 irp = irp->irp_next) {
2747 if (bcmp(irp->irp_rp->rp_pwwn, portwwn, FC_WWN_LEN)) {
2748 continue;
2749 } else {
2750 return (irp);
2751 }
2752 }
2753 }
2754
2755 return (NULL);
2756 }
2757
2758 #ifdef lint
2759 #define FCT_VERIFY_RSCN() _NOTE(EMPTY)
2760 #else
2761 #define FCT_VERIFY_RSCN() \
2762 do { \
2763 ct_cmd = fct_create_solct(port, irp->irp_rp, NS_GID_PN, \
2764 fct_gid_cb); \
2765 if (ct_cmd) { \
2766 uint32_t cnt; \
2767 cnt = atomic_inc_32_nv(&irp->irp_rscn_counter); \
2768 CMD_TO_ICMD(ct_cmd)->icmd_cb_private = \
2769 INT2PTR(cnt, void *); \
2770 irp->irp_flags |= IRP_RSCN_QUEUED; \
2771 fct_post_to_solcmd_queue(port, ct_cmd); \
2772 } \
2773 } while (0)
2774 #endif
2775
2776 /* ARGSUSED */
2777 static void
fct_rscn_verify(fct_i_local_port_t * iport,uint8_t * rscn_req_payload,uint32_t rscn_req_size)2778 fct_rscn_verify(fct_i_local_port_t *iport, uint8_t *rscn_req_payload,
2779 uint32_t rscn_req_size)
2780 {
2781 int idx = 0;
2782 uint8_t page_format = 0;
2783 uint32_t page_portid = 0;
2784 uint8_t *page_buf = NULL;
2785 uint8_t *last_page_buf = NULL;
2786 #ifndef lint
2787 fct_cmd_t *ct_cmd = NULL;
2788 fct_local_port_t *port = NULL;
2789 #endif
2790 fct_i_remote_port_t *irp = NULL;
2791
2792 page_buf = rscn_req_payload + 4;
2793 last_page_buf = rscn_req_payload +
2794 fct_netbuf_to_value(rscn_req_payload + 2, 2) - 4;
2795 #ifndef lint
2796 port = iport->iport_port;
2797 #endif
2798 for (; page_buf <= last_page_buf; page_buf += 4) {
2799 page_format = 0x03 & page_buf[0];
2800 page_portid = fct_netbuf_to_value(page_buf + 1, 3);
2801
2802 DTRACE_FC_2(rscn__receive,
2803 fct_i_local_port_t, iport,
2804 int, page_portid);
2805
2806 rw_enter(&iport->iport_lock, RW_READER);
2807 if (!page_format) {
2808 irp = fct_portid_to_portptr(iport, page_portid);
2809 if (!(irp && !(irp->irp_flags & IRP_RSCN_QUEUED))) {
2810 rw_exit(&iport->iport_lock);
2811
2812 continue; /* try next page */
2813 }
2814
2815 if (FC_WELL_KNOWN_ADDR(irp->irp_portid) ||
2816 !(irp->irp_flags & IRP_PLOGI_DONE)) {
2817 rw_exit(&iport->iport_lock);
2818
2819 continue; /* try next page */
2820 }
2821
2822 FCT_VERIFY_RSCN();
2823 } else {
2824 for (idx = 0; idx < FCT_HASH_TABLE_SIZE; idx++) {
2825 for (irp = iport->iport_rp_tb[idx];
2826 irp; irp = irp->irp_next) {
2827 if (FC_WELL_KNOWN_ADDR(irp->irp_portid))
2828 continue; /* try next irp */
2829
2830 if (!(irp->irp_flags & IRP_PLOGI_DONE))
2831 continue; /* try next irp */
2832
2833 if (irp->irp_flags & IRP_RSCN_QUEUED) {
2834 continue; /* try next irp */
2835 }
2836 #ifndef lint
2837 if (!((0xFFFFFF << (page_format * 8)) &
2838 (page_portid ^ irp->irp_portid))) {
2839 FCT_VERIFY_RSCN();
2840 }
2841 #endif
2842 }
2843 }
2844 }
2845 rw_exit(&iport->iport_lock);
2846 }
2847 }
2848