1 /*******************************************************************************
2 * This file contains main functions related to iSCSI Parameter negotiation.
4 * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
6 * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
8 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 ******************************************************************************/
21 #include <linux/slab.h>
23 #include "iscsi_target_core.h"
24 #include "iscsi_target_util.h"
25 #include "iscsi_target_parameters.h"
27 int iscsi_login_rx_data(
28 struct iscsi_conn *conn,
35 memset(&iov, 0, sizeof(struct kvec));
40 * Initial Marker-less Interval.
41 * Add the values regardless of IFMarker/OFMarker, considering
42 * it may not be negoitated yet.
44 conn->of_marker += length;
46 rx_got = rx_data(conn, &iov, 1, length);
47 if (rx_got != length) {
48 pr_err("rx_data returned %d, expecting %d.\n",
56 int iscsi_login_tx_data(
57 struct iscsi_conn *conn,
65 length = (ISCSI_HDR_LEN + text_length);
67 memset(&iov[0], 0, 2 * sizeof(struct kvec));
68 iov[0].iov_len = ISCSI_HDR_LEN;
69 iov[0].iov_base = pdu_buf;
70 iov[1].iov_len = text_length;
71 iov[1].iov_base = text_buf;
74 * Initial Marker-less Interval.
75 * Add the values regardless of IFMarker/OFMarker, considering
76 * it may not be negoitated yet.
78 conn->if_marker += length;
80 tx_sent = tx_data(conn, &iov[0], 2, length);
81 if (tx_sent != length) {
82 pr_err("tx_data returned %d, expecting %d.\n",
90 void iscsi_dump_conn_ops(struct iscsi_conn_ops *conn_ops)
92 pr_debug("HeaderDigest: %s\n", (conn_ops->HeaderDigest) ?
94 pr_debug("DataDigest: %s\n", (conn_ops->DataDigest) ?
96 pr_debug("MaxRecvDataSegmentLength: %u\n",
97 conn_ops->MaxRecvDataSegmentLength);
98 pr_debug("OFMarker: %s\n", (conn_ops->OFMarker) ? "Yes" : "No");
99 pr_debug("IFMarker: %s\n", (conn_ops->IFMarker) ? "Yes" : "No");
100 if (conn_ops->OFMarker)
101 pr_debug("OFMarkInt: %u\n", conn_ops->OFMarkInt);
102 if (conn_ops->IFMarker)
103 pr_debug("IFMarkInt: %u\n", conn_ops->IFMarkInt);
106 void iscsi_dump_sess_ops(struct iscsi_sess_ops *sess_ops)
108 pr_debug("InitiatorName: %s\n", sess_ops->InitiatorName);
109 pr_debug("InitiatorAlias: %s\n", sess_ops->InitiatorAlias);
110 pr_debug("TargetName: %s\n", sess_ops->TargetName);
111 pr_debug("TargetAlias: %s\n", sess_ops->TargetAlias);
112 pr_debug("TargetPortalGroupTag: %hu\n",
113 sess_ops->TargetPortalGroupTag);
114 pr_debug("MaxConnections: %hu\n", sess_ops->MaxConnections);
115 pr_debug("InitialR2T: %s\n",
116 (sess_ops->InitialR2T) ? "Yes" : "No");
117 pr_debug("ImmediateData: %s\n", (sess_ops->ImmediateData) ?
119 pr_debug("MaxBurstLength: %u\n", sess_ops->MaxBurstLength);
120 pr_debug("FirstBurstLength: %u\n", sess_ops->FirstBurstLength);
121 pr_debug("DefaultTime2Wait: %hu\n", sess_ops->DefaultTime2Wait);
122 pr_debug("DefaultTime2Retain: %hu\n",
123 sess_ops->DefaultTime2Retain);
124 pr_debug("MaxOutstandingR2T: %hu\n",
125 sess_ops->MaxOutstandingR2T);
126 pr_debug("DataPDUInOrder: %s\n",
127 (sess_ops->DataPDUInOrder) ? "Yes" : "No");
128 pr_debug("DataSequenceInOrder: %s\n",
129 (sess_ops->DataSequenceInOrder) ? "Yes" : "No");
130 pr_debug("ErrorRecoveryLevel: %hu\n",
131 sess_ops->ErrorRecoveryLevel);
132 pr_debug("SessionType: %s\n", (sess_ops->SessionType) ?
133 "Discovery" : "Normal");
136 void iscsi_print_params(struct iscsi_param_list *param_list)
138 struct iscsi_param *param;
140 list_for_each_entry(param, ¶m_list->param_list, p_list)
141 pr_debug("%s: %s\n", param->name, param->value);
144 static struct iscsi_param *iscsi_set_default_param(struct iscsi_param_list *param_list,
145 char *name, char *value, u8 phase, u8 scope, u8 sender,
146 u16 type_range, u8 use)
148 struct iscsi_param *param = NULL;
150 param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL);
152 pr_err("Unable to allocate memory for parameter.\n");
155 INIT_LIST_HEAD(¶m->p_list);
157 param->name = kzalloc(strlen(name) + 1, GFP_KERNEL);
159 pr_err("Unable to allocate memory for parameter name.\n");
163 param->value = kzalloc(strlen(value) + 1, GFP_KERNEL);
165 pr_err("Unable to allocate memory for parameter value.\n");
169 memcpy(param->name, name, strlen(name));
170 param->name[strlen(name)] = '\0';
171 memcpy(param->value, value, strlen(value));
172 param->value[strlen(value)] = '\0';
173 param->phase = phase;
174 param->scope = scope;
175 param->sender = sender;
177 param->type_range = type_range;
179 switch (param->type_range) {
180 case TYPERANGE_BOOL_AND:
181 param->type = TYPE_BOOL_AND;
183 case TYPERANGE_BOOL_OR:
184 param->type = TYPE_BOOL_OR;
186 case TYPERANGE_0_TO_2:
187 case TYPERANGE_0_TO_3600:
188 case TYPERANGE_0_TO_32767:
189 case TYPERANGE_0_TO_65535:
190 case TYPERANGE_1_TO_65535:
191 case TYPERANGE_2_TO_3600:
192 case TYPERANGE_512_TO_16777215:
193 param->type = TYPE_NUMBER;
196 case TYPERANGE_DIGEST:
197 param->type = TYPE_VALUE_LIST | TYPE_STRING;
199 case TYPERANGE_MARKINT:
200 param->type = TYPE_NUMBER_RANGE;
201 param->type_range |= TYPERANGE_1_TO_65535;
203 case TYPERANGE_ISCSINAME:
204 case TYPERANGE_SESSIONTYPE:
205 case TYPERANGE_TARGETADDRESS:
207 param->type = TYPE_STRING;
210 pr_err("Unknown type_range 0x%02x\n",
214 list_add_tail(¶m->p_list, ¶m_list->param_list);
227 /* #warning Add extension keys */
228 int iscsi_create_default_params(struct iscsi_param_list **param_list_ptr)
230 struct iscsi_param *param = NULL;
231 struct iscsi_param_list *pl;
233 pl = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL);
235 pr_err("Unable to allocate memory for"
236 " struct iscsi_param_list.\n");
239 INIT_LIST_HEAD(&pl->param_list);
240 INIT_LIST_HEAD(&pl->extra_response_list);
243 * The format for setting the initial parameter definitions are:
253 param = iscsi_set_default_param(pl, AUTHMETHOD, INITIAL_AUTHMETHOD,
254 PHASE_SECURITY, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
255 TYPERANGE_AUTH, USE_INITIAL_ONLY);
259 param = iscsi_set_default_param(pl, HEADERDIGEST, INITIAL_HEADERDIGEST,
260 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
261 TYPERANGE_DIGEST, USE_INITIAL_ONLY);
265 param = iscsi_set_default_param(pl, DATADIGEST, INITIAL_DATADIGEST,
266 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
267 TYPERANGE_DIGEST, USE_INITIAL_ONLY);
271 param = iscsi_set_default_param(pl, MAXCONNECTIONS,
272 INITIAL_MAXCONNECTIONS, PHASE_OPERATIONAL,
273 SCOPE_SESSION_WIDE, SENDER_BOTH,
274 TYPERANGE_1_TO_65535, USE_LEADING_ONLY);
278 param = iscsi_set_default_param(pl, SENDTARGETS, INITIAL_SENDTARGETS,
279 PHASE_FFP0, SCOPE_SESSION_WIDE, SENDER_INITIATOR,
284 param = iscsi_set_default_param(pl, TARGETNAME, INITIAL_TARGETNAME,
285 PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_BOTH,
286 TYPERANGE_ISCSINAME, USE_ALL);
290 param = iscsi_set_default_param(pl, INITIATORNAME,
291 INITIAL_INITIATORNAME, PHASE_DECLARATIVE,
292 SCOPE_SESSION_WIDE, SENDER_INITIATOR,
293 TYPERANGE_ISCSINAME, USE_INITIAL_ONLY);
297 param = iscsi_set_default_param(pl, TARGETALIAS, INITIAL_TARGETALIAS,
298 PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_TARGET,
299 TYPERANGE_UTF8, USE_ALL);
303 param = iscsi_set_default_param(pl, INITIATORALIAS,
304 INITIAL_INITIATORALIAS, PHASE_DECLARATIVE,
305 SCOPE_SESSION_WIDE, SENDER_INITIATOR, TYPERANGE_UTF8,
310 param = iscsi_set_default_param(pl, TARGETADDRESS,
311 INITIAL_TARGETADDRESS, PHASE_DECLARATIVE,
312 SCOPE_SESSION_WIDE, SENDER_TARGET,
313 TYPERANGE_TARGETADDRESS, USE_ALL);
317 param = iscsi_set_default_param(pl, TARGETPORTALGROUPTAG,
318 INITIAL_TARGETPORTALGROUPTAG,
319 PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_TARGET,
320 TYPERANGE_0_TO_65535, USE_INITIAL_ONLY);
324 param = iscsi_set_default_param(pl, INITIALR2T, INITIAL_INITIALR2T,
325 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
326 TYPERANGE_BOOL_OR, USE_LEADING_ONLY);
330 param = iscsi_set_default_param(pl, IMMEDIATEDATA,
331 INITIAL_IMMEDIATEDATA, PHASE_OPERATIONAL,
332 SCOPE_SESSION_WIDE, SENDER_BOTH, TYPERANGE_BOOL_AND,
337 param = iscsi_set_default_param(pl, MAXRECVDATASEGMENTLENGTH,
338 INITIAL_MAXRECVDATASEGMENTLENGTH,
339 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
340 TYPERANGE_512_TO_16777215, USE_ALL);
344 param = iscsi_set_default_param(pl, MAXBURSTLENGTH,
345 INITIAL_MAXBURSTLENGTH, PHASE_OPERATIONAL,
346 SCOPE_SESSION_WIDE, SENDER_BOTH,
347 TYPERANGE_512_TO_16777215, USE_LEADING_ONLY);
351 param = iscsi_set_default_param(pl, FIRSTBURSTLENGTH,
352 INITIAL_FIRSTBURSTLENGTH,
353 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
354 TYPERANGE_512_TO_16777215, USE_LEADING_ONLY);
358 param = iscsi_set_default_param(pl, DEFAULTTIME2WAIT,
359 INITIAL_DEFAULTTIME2WAIT,
360 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
361 TYPERANGE_0_TO_3600, USE_LEADING_ONLY);
365 param = iscsi_set_default_param(pl, DEFAULTTIME2RETAIN,
366 INITIAL_DEFAULTTIME2RETAIN,
367 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
368 TYPERANGE_0_TO_3600, USE_LEADING_ONLY);
372 param = iscsi_set_default_param(pl, MAXOUTSTANDINGR2T,
373 INITIAL_MAXOUTSTANDINGR2T,
374 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
375 TYPERANGE_1_TO_65535, USE_LEADING_ONLY);
379 param = iscsi_set_default_param(pl, DATAPDUINORDER,
380 INITIAL_DATAPDUINORDER, PHASE_OPERATIONAL,
381 SCOPE_SESSION_WIDE, SENDER_BOTH, TYPERANGE_BOOL_OR,
386 param = iscsi_set_default_param(pl, DATASEQUENCEINORDER,
387 INITIAL_DATASEQUENCEINORDER,
388 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
389 TYPERANGE_BOOL_OR, USE_LEADING_ONLY);
393 param = iscsi_set_default_param(pl, ERRORRECOVERYLEVEL,
394 INITIAL_ERRORRECOVERYLEVEL,
395 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
396 TYPERANGE_0_TO_2, USE_LEADING_ONLY);
400 param = iscsi_set_default_param(pl, SESSIONTYPE, INITIAL_SESSIONTYPE,
401 PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_INITIATOR,
402 TYPERANGE_SESSIONTYPE, USE_LEADING_ONLY);
406 param = iscsi_set_default_param(pl, IFMARKER, INITIAL_IFMARKER,
407 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
408 TYPERANGE_BOOL_AND, USE_INITIAL_ONLY);
412 param = iscsi_set_default_param(pl, OFMARKER, INITIAL_OFMARKER,
413 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
414 TYPERANGE_BOOL_AND, USE_INITIAL_ONLY);
418 param = iscsi_set_default_param(pl, IFMARKINT, INITIAL_IFMARKINT,
419 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
420 TYPERANGE_MARKINT, USE_INITIAL_ONLY);
424 param = iscsi_set_default_param(pl, OFMARKINT, INITIAL_OFMARKINT,
425 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
426 TYPERANGE_MARKINT, USE_INITIAL_ONLY);
430 *param_list_ptr = pl;
433 iscsi_release_param_list(pl);
437 int iscsi_set_keys_to_negotiate(
439 struct iscsi_param_list *param_list)
441 struct iscsi_param *param;
443 list_for_each_entry(param, ¶m_list->param_list, p_list) {
445 if (!strcmp(param->name, AUTHMETHOD)) {
446 SET_PSTATE_NEGOTIATE(param);
447 } else if (!strcmp(param->name, HEADERDIGEST)) {
448 SET_PSTATE_NEGOTIATE(param);
449 } else if (!strcmp(param->name, DATADIGEST)) {
450 SET_PSTATE_NEGOTIATE(param);
451 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
452 SET_PSTATE_NEGOTIATE(param);
453 } else if (!strcmp(param->name, TARGETNAME)) {
455 } else if (!strcmp(param->name, INITIATORNAME)) {
457 } else if (!strcmp(param->name, TARGETALIAS)) {
459 SET_PSTATE_NEGOTIATE(param);
460 } else if (!strcmp(param->name, INITIATORALIAS)) {
462 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
463 SET_PSTATE_NEGOTIATE(param);
464 } else if (!strcmp(param->name, INITIALR2T)) {
465 SET_PSTATE_NEGOTIATE(param);
466 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
467 SET_PSTATE_NEGOTIATE(param);
468 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
469 SET_PSTATE_NEGOTIATE(param);
470 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
471 SET_PSTATE_NEGOTIATE(param);
472 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
473 SET_PSTATE_NEGOTIATE(param);
474 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
475 SET_PSTATE_NEGOTIATE(param);
476 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
477 SET_PSTATE_NEGOTIATE(param);
478 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
479 SET_PSTATE_NEGOTIATE(param);
480 } else if (!strcmp(param->name, DATAPDUINORDER)) {
481 SET_PSTATE_NEGOTIATE(param);
482 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
483 SET_PSTATE_NEGOTIATE(param);
484 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
485 SET_PSTATE_NEGOTIATE(param);
486 } else if (!strcmp(param->name, SESSIONTYPE)) {
487 SET_PSTATE_NEGOTIATE(param);
488 } else if (!strcmp(param->name, IFMARKER)) {
489 SET_PSTATE_NEGOTIATE(param);
490 } else if (!strcmp(param->name, OFMARKER)) {
491 SET_PSTATE_NEGOTIATE(param);
492 } else if (!strcmp(param->name, IFMARKINT)) {
493 SET_PSTATE_NEGOTIATE(param);
494 } else if (!strcmp(param->name, OFMARKINT)) {
495 SET_PSTATE_NEGOTIATE(param);
502 int iscsi_set_keys_irrelevant_for_discovery(
503 struct iscsi_param_list *param_list)
505 struct iscsi_param *param;
507 list_for_each_entry(param, ¶m_list->param_list, p_list) {
508 if (!strcmp(param->name, MAXCONNECTIONS))
509 param->state &= ~PSTATE_NEGOTIATE;
510 else if (!strcmp(param->name, INITIALR2T))
511 param->state &= ~PSTATE_NEGOTIATE;
512 else if (!strcmp(param->name, IMMEDIATEDATA))
513 param->state &= ~PSTATE_NEGOTIATE;
514 else if (!strcmp(param->name, MAXBURSTLENGTH))
515 param->state &= ~PSTATE_NEGOTIATE;
516 else if (!strcmp(param->name, FIRSTBURSTLENGTH))
517 param->state &= ~PSTATE_NEGOTIATE;
518 else if (!strcmp(param->name, MAXOUTSTANDINGR2T))
519 param->state &= ~PSTATE_NEGOTIATE;
520 else if (!strcmp(param->name, DATAPDUINORDER))
521 param->state &= ~PSTATE_NEGOTIATE;
522 else if (!strcmp(param->name, DATASEQUENCEINORDER))
523 param->state &= ~PSTATE_NEGOTIATE;
524 else if (!strcmp(param->name, ERRORRECOVERYLEVEL))
525 param->state &= ~PSTATE_NEGOTIATE;
526 else if (!strcmp(param->name, DEFAULTTIME2WAIT))
527 param->state &= ~PSTATE_NEGOTIATE;
528 else if (!strcmp(param->name, DEFAULTTIME2RETAIN))
529 param->state &= ~PSTATE_NEGOTIATE;
530 else if (!strcmp(param->name, IFMARKER))
531 param->state &= ~PSTATE_NEGOTIATE;
532 else if (!strcmp(param->name, OFMARKER))
533 param->state &= ~PSTATE_NEGOTIATE;
534 else if (!strcmp(param->name, IFMARKINT))
535 param->state &= ~PSTATE_NEGOTIATE;
536 else if (!strcmp(param->name, OFMARKINT))
537 param->state &= ~PSTATE_NEGOTIATE;
543 int iscsi_copy_param_list(
544 struct iscsi_param_list **dst_param_list,
545 struct iscsi_param_list *src_param_list,
548 struct iscsi_param *param = NULL;
549 struct iscsi_param *new_param = NULL;
550 struct iscsi_param_list *param_list = NULL;
552 param_list = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL);
554 pr_err("Unable to allocate memory for struct iscsi_param_list.\n");
557 INIT_LIST_HEAD(¶m_list->param_list);
558 INIT_LIST_HEAD(¶m_list->extra_response_list);
560 list_for_each_entry(param, &src_param_list->param_list, p_list) {
561 if (!leading && (param->scope & SCOPE_SESSION_WIDE)) {
562 if ((strcmp(param->name, "TargetName") != 0) &&
563 (strcmp(param->name, "InitiatorName") != 0) &&
564 (strcmp(param->name, "TargetPortalGroupTag") != 0))
568 new_param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL);
570 pr_err("Unable to allocate memory for struct iscsi_param.\n");
574 new_param->name = kstrdup(param->name, GFP_KERNEL);
575 new_param->value = kstrdup(param->value, GFP_KERNEL);
576 if (!new_param->value || !new_param->name) {
577 kfree(new_param->value);
578 kfree(new_param->name);
580 pr_err("Unable to allocate memory for parameter name/value.\n");
584 new_param->set_param = param->set_param;
585 new_param->phase = param->phase;
586 new_param->scope = param->scope;
587 new_param->sender = param->sender;
588 new_param->type = param->type;
589 new_param->use = param->use;
590 new_param->type_range = param->type_range;
592 list_add_tail(&new_param->p_list, ¶m_list->param_list);
595 if (!list_empty(¶m_list->param_list)) {
596 *dst_param_list = param_list;
598 pr_err("No parameters allocated.\n");
605 iscsi_release_param_list(param_list);
609 static void iscsi_release_extra_responses(struct iscsi_param_list *param_list)
611 struct iscsi_extra_response *er, *er_tmp;
613 list_for_each_entry_safe(er, er_tmp, ¶m_list->extra_response_list,
615 list_del(&er->er_list);
620 void iscsi_release_param_list(struct iscsi_param_list *param_list)
622 struct iscsi_param *param, *param_tmp;
624 list_for_each_entry_safe(param, param_tmp, ¶m_list->param_list,
626 list_del(¶m->p_list);
636 iscsi_release_extra_responses(param_list);
641 struct iscsi_param *iscsi_find_param_from_key(
643 struct iscsi_param_list *param_list)
645 struct iscsi_param *param;
647 if (!key || !param_list) {
648 pr_err("Key or parameter list pointer is NULL.\n");
652 list_for_each_entry(param, ¶m_list->param_list, p_list) {
653 if (!strcmp(key, param->name))
657 pr_err("Unable to locate key \"%s\".\n", key);
661 int iscsi_extract_key_value(char *textbuf, char **key, char **value)
663 *value = strchr(textbuf, '=');
665 pr_err("Unable to locate \"=\" seperator for key,"
666 " ignoring request.\n");
677 int iscsi_update_param_value(struct iscsi_param *param, char *value)
681 param->value = kzalloc(strlen(value) + 1, GFP_KERNEL);
683 pr_err("Unable to allocate memory for value.\n");
687 memcpy(param->value, value, strlen(value));
688 param->value[strlen(value)] = '\0';
690 pr_debug("iSCSI Parameter updated to %s=%s\n",
691 param->name, param->value);
695 static int iscsi_add_notunderstood_response(
698 struct iscsi_param_list *param_list)
700 struct iscsi_extra_response *extra_response;
702 if (strlen(value) > VALUE_MAXLEN) {
703 pr_err("Value for notunderstood key \"%s\" exceeds %d,"
704 " protocol error.\n", key, VALUE_MAXLEN);
708 extra_response = kzalloc(sizeof(struct iscsi_extra_response), GFP_KERNEL);
709 if (!extra_response) {
710 pr_err("Unable to allocate memory for"
711 " struct iscsi_extra_response.\n");
714 INIT_LIST_HEAD(&extra_response->er_list);
716 strlcpy(extra_response->key, key, sizeof(extra_response->key));
717 strlcpy(extra_response->value, NOTUNDERSTOOD,
718 sizeof(extra_response->value));
720 list_add_tail(&extra_response->er_list,
721 ¶m_list->extra_response_list);
725 static int iscsi_check_for_auth_key(char *key)
730 if (!strcmp(key, "CHAP_A") || !strcmp(key, "CHAP_I") ||
731 !strcmp(key, "CHAP_C") || !strcmp(key, "CHAP_N") ||
732 !strcmp(key, "CHAP_R"))
738 if (!strcmp(key, "SRP_U") || !strcmp(key, "SRP_N") ||
739 !strcmp(key, "SRP_g") || !strcmp(key, "SRP_s") ||
740 !strcmp(key, "SRP_A") || !strcmp(key, "SRP_B") ||
741 !strcmp(key, "SRP_M") || !strcmp(key, "SRP_HM"))
747 static void iscsi_check_proposer_for_optional_reply(struct iscsi_param *param)
749 if (IS_TYPE_BOOL_AND(param)) {
750 if (!strcmp(param->value, NO))
751 SET_PSTATE_REPLY_OPTIONAL(param);
752 } else if (IS_TYPE_BOOL_OR(param)) {
753 if (!strcmp(param->value, YES))
754 SET_PSTATE_REPLY_OPTIONAL(param);
756 * Required for gPXE iSCSI boot client
758 if (!strcmp(param->name, IMMEDIATEDATA))
759 SET_PSTATE_REPLY_OPTIONAL(param);
760 } else if (IS_TYPE_NUMBER(param)) {
761 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH))
762 SET_PSTATE_REPLY_OPTIONAL(param);
764 * Required for gPXE iSCSI boot client
766 if (!strcmp(param->name, MAXCONNECTIONS))
767 SET_PSTATE_REPLY_OPTIONAL(param);
768 } else if (IS_PHASE_DECLARATIVE(param))
769 SET_PSTATE_REPLY_OPTIONAL(param);
772 static int iscsi_check_boolean_value(struct iscsi_param *param, char *value)
774 if (strcmp(value, YES) && strcmp(value, NO)) {
775 pr_err("Illegal value for \"%s\", must be either"
776 " \"%s\" or \"%s\".\n", param->name, YES, NO);
783 static int iscsi_check_numerical_value(struct iscsi_param *param, char *value_ptr)
788 value = simple_strtoul(value_ptr, &tmpptr, 0);
790 /* #warning FIXME: Fix this */
792 if (strspn(endptr, WHITE_SPACE) != strlen(endptr)) {
793 pr_err("Illegal value \"%s\" for \"%s\".\n",
798 if (IS_TYPERANGE_0_TO_2(param)) {
799 if ((value < 0) || (value > 2)) {
800 pr_err("Illegal value for \"%s\", must be"
801 " between 0 and 2.\n", param->name);
806 if (IS_TYPERANGE_0_TO_3600(param)) {
807 if ((value < 0) || (value > 3600)) {
808 pr_err("Illegal value for \"%s\", must be"
809 " between 0 and 3600.\n", param->name);
814 if (IS_TYPERANGE_0_TO_32767(param)) {
815 if ((value < 0) || (value > 32767)) {
816 pr_err("Illegal value for \"%s\", must be"
817 " between 0 and 32767.\n", param->name);
822 if (IS_TYPERANGE_0_TO_65535(param)) {
823 if ((value < 0) || (value > 65535)) {
824 pr_err("Illegal value for \"%s\", must be"
825 " between 0 and 65535.\n", param->name);
830 if (IS_TYPERANGE_1_TO_65535(param)) {
831 if ((value < 1) || (value > 65535)) {
832 pr_err("Illegal value for \"%s\", must be"
833 " between 1 and 65535.\n", param->name);
838 if (IS_TYPERANGE_2_TO_3600(param)) {
839 if ((value < 2) || (value > 3600)) {
840 pr_err("Illegal value for \"%s\", must be"
841 " between 2 and 3600.\n", param->name);
846 if (IS_TYPERANGE_512_TO_16777215(param)) {
847 if ((value < 512) || (value > 16777215)) {
848 pr_err("Illegal value for \"%s\", must be"
849 " between 512 and 16777215.\n", param->name);
858 static int iscsi_check_numerical_range_value(struct iscsi_param *param, char *value)
860 char *left_val_ptr = NULL, *right_val_ptr = NULL;
861 char *tilde_ptr = NULL, *tmp_ptr = NULL;
862 u32 left_val, right_val, local_left_val, local_right_val;
864 if (strcmp(param->name, IFMARKINT) &&
865 strcmp(param->name, OFMARKINT)) {
866 pr_err("Only parameters \"%s\" or \"%s\" may contain a"
867 " numerical range value.\n", IFMARKINT, OFMARKINT);
871 if (IS_PSTATE_PROPOSER(param))
874 tilde_ptr = strchr(value, '~');
876 pr_err("Unable to locate numerical range indicator"
877 " \"~\" for \"%s\".\n", param->name);
882 left_val_ptr = value;
883 right_val_ptr = value + strlen(left_val_ptr) + 1;
885 if (iscsi_check_numerical_value(param, left_val_ptr) < 0)
887 if (iscsi_check_numerical_value(param, right_val_ptr) < 0)
890 left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0);
891 right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0);
894 if (right_val < left_val) {
895 pr_err("Numerical range for parameter \"%s\" contains"
896 " a right value which is less than the left.\n",
902 * For now, enforce reasonable defaults for [I,O]FMarkInt.
904 tilde_ptr = strchr(param->value, '~');
906 pr_err("Unable to locate numerical range indicator"
907 " \"~\" for \"%s\".\n", param->name);
912 left_val_ptr = param->value;
913 right_val_ptr = param->value + strlen(left_val_ptr) + 1;
915 local_left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0);
916 local_right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0);
919 if (param->set_param) {
920 if ((left_val < local_left_val) ||
921 (right_val < local_left_val)) {
922 pr_err("Passed value range \"%u~%u\" is below"
923 " minimum left value \"%u\" for key \"%s\","
924 " rejecting.\n", left_val, right_val,
925 local_left_val, param->name);
929 if ((left_val < local_left_val) &&
930 (right_val < local_left_val)) {
931 pr_err("Received value range \"%u~%u\" is"
932 " below minimum left value \"%u\" for key"
933 " \"%s\", rejecting.\n", left_val, right_val,
934 local_left_val, param->name);
935 SET_PSTATE_REJECT(param);
936 if (iscsi_update_param_value(param, REJECT) < 0)
944 static int iscsi_check_string_or_list_value(struct iscsi_param *param, char *value)
946 if (IS_PSTATE_PROPOSER(param))
949 if (IS_TYPERANGE_AUTH_PARAM(param)) {
950 if (strcmp(value, KRB5) && strcmp(value, SPKM1) &&
951 strcmp(value, SPKM2) && strcmp(value, SRP) &&
952 strcmp(value, CHAP) && strcmp(value, NONE)) {
953 pr_err("Illegal value for \"%s\", must be"
954 " \"%s\", \"%s\", \"%s\", \"%s\", \"%s\""
955 " or \"%s\".\n", param->name, KRB5,
956 SPKM1, SPKM2, SRP, CHAP, NONE);
960 if (IS_TYPERANGE_DIGEST_PARAM(param)) {
961 if (strcmp(value, CRC32C) && strcmp(value, NONE)) {
962 pr_err("Illegal value for \"%s\", must be"
963 " \"%s\" or \"%s\".\n", param->name,
968 if (IS_TYPERANGE_SESSIONTYPE(param)) {
969 if (strcmp(value, DISCOVERY) && strcmp(value, NORMAL)) {
970 pr_err("Illegal value for \"%s\", must be"
971 " \"%s\" or \"%s\".\n", param->name,
981 * This function is used to pick a value range number, currently just
982 * returns the lesser of both right values.
984 static char *iscsi_get_value_from_number_range(
985 struct iscsi_param *param,
988 char *end_ptr, *tilde_ptr1 = NULL, *tilde_ptr2 = NULL;
989 u32 acceptor_right_value, proposer_right_value;
991 tilde_ptr1 = strchr(value, '~');
994 *tilde_ptr1++ = '\0';
995 proposer_right_value = simple_strtoul(tilde_ptr1, &end_ptr, 0);
997 tilde_ptr2 = strchr(param->value, '~');
1000 *tilde_ptr2++ = '\0';
1001 acceptor_right_value = simple_strtoul(tilde_ptr2, &end_ptr, 0);
1003 return (acceptor_right_value >= proposer_right_value) ?
1004 tilde_ptr1 : tilde_ptr2;
1007 static char *iscsi_check_valuelist_for_support(
1008 struct iscsi_param *param,
1011 char *tmp1 = NULL, *tmp2 = NULL;
1012 char *acceptor_values = NULL, *proposer_values = NULL;
1014 acceptor_values = param->value;
1015 proposer_values = value;
1018 if (!proposer_values)
1020 tmp1 = strchr(proposer_values, ',');
1023 acceptor_values = param->value;
1025 if (!acceptor_values) {
1030 tmp2 = strchr(acceptor_values, ',');
1033 if (!acceptor_values || !proposer_values) {
1040 if (!strcmp(acceptor_values, proposer_values)) {
1048 acceptor_values = tmp2;
1049 if (!acceptor_values)
1051 } while (acceptor_values);
1054 proposer_values = tmp1;
1055 } while (proposer_values);
1058 return proposer_values;
1061 static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value)
1063 u8 acceptor_boolean_value = 0, proposer_boolean_value = 0;
1064 char *negoitated_value = NULL;
1066 if (IS_PSTATE_ACCEPTOR(param)) {
1067 pr_err("Received key \"%s\" twice, protocol error.\n",
1072 if (IS_PSTATE_REJECT(param))
1075 if (IS_TYPE_BOOL_AND(param)) {
1076 if (!strcmp(value, YES))
1077 proposer_boolean_value = 1;
1078 if (!strcmp(param->value, YES))
1079 acceptor_boolean_value = 1;
1080 if (acceptor_boolean_value && proposer_boolean_value)
1083 if (iscsi_update_param_value(param, NO) < 0)
1085 if (!proposer_boolean_value)
1086 SET_PSTATE_REPLY_OPTIONAL(param);
1088 } else if (IS_TYPE_BOOL_OR(param)) {
1089 if (!strcmp(value, YES))
1090 proposer_boolean_value = 1;
1091 if (!strcmp(param->value, YES))
1092 acceptor_boolean_value = 1;
1093 if (acceptor_boolean_value || proposer_boolean_value) {
1094 if (iscsi_update_param_value(param, YES) < 0)
1096 if (proposer_boolean_value)
1097 SET_PSTATE_REPLY_OPTIONAL(param);
1099 } else if (IS_TYPE_NUMBER(param)) {
1100 char *tmpptr, buf[10];
1101 u32 acceptor_value = simple_strtoul(param->value, &tmpptr, 0);
1102 u32 proposer_value = simple_strtoul(value, &tmpptr, 0);
1106 if (!strcmp(param->name, MAXCONNECTIONS) ||
1107 !strcmp(param->name, MAXBURSTLENGTH) ||
1108 !strcmp(param->name, FIRSTBURSTLENGTH) ||
1109 !strcmp(param->name, MAXOUTSTANDINGR2T) ||
1110 !strcmp(param->name, DEFAULTTIME2RETAIN) ||
1111 !strcmp(param->name, ERRORRECOVERYLEVEL)) {
1112 if (proposer_value > acceptor_value) {
1113 sprintf(buf, "%u", acceptor_value);
1114 if (iscsi_update_param_value(param,
1118 if (iscsi_update_param_value(param, value) < 0)
1121 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1122 if (acceptor_value > proposer_value) {
1123 sprintf(buf, "%u", acceptor_value);
1124 if (iscsi_update_param_value(param,
1128 if (iscsi_update_param_value(param, value) < 0)
1132 if (iscsi_update_param_value(param, value) < 0)
1136 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH))
1137 SET_PSTATE_REPLY_OPTIONAL(param);
1138 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1139 negoitated_value = iscsi_get_value_from_number_range(
1141 if (!negoitated_value)
1143 if (iscsi_update_param_value(param, negoitated_value) < 0)
1145 } else if (IS_TYPE_VALUE_LIST(param)) {
1146 negoitated_value = iscsi_check_valuelist_for_support(
1148 if (!negoitated_value) {
1149 pr_err("Proposer's value list \"%s\" contains"
1150 " no valid values from Acceptor's value list"
1151 " \"%s\".\n", value, param->value);
1154 if (iscsi_update_param_value(param, negoitated_value) < 0)
1156 } else if (IS_PHASE_DECLARATIVE(param)) {
1157 if (iscsi_update_param_value(param, value) < 0)
1159 SET_PSTATE_REPLY_OPTIONAL(param);
1165 static int iscsi_check_proposer_state(struct iscsi_param *param, char *value)
1167 if (IS_PSTATE_RESPONSE_GOT(param)) {
1168 pr_err("Received key \"%s\" twice, protocol error.\n",
1173 if (IS_TYPE_NUMBER_RANGE(param)) {
1174 u32 left_val = 0, right_val = 0, recieved_value = 0;
1175 char *left_val_ptr = NULL, *right_val_ptr = NULL;
1176 char *tilde_ptr = NULL, *tmp_ptr = NULL;
1178 if (!strcmp(value, IRRELEVANT) || !strcmp(value, REJECT)) {
1179 if (iscsi_update_param_value(param, value) < 0)
1184 tilde_ptr = strchr(value, '~');
1186 pr_err("Illegal \"~\" in response for \"%s\".\n",
1190 tilde_ptr = strchr(param->value, '~');
1192 pr_err("Unable to locate numerical range"
1193 " indicator \"~\" for \"%s\".\n", param->name);
1198 left_val_ptr = param->value;
1199 right_val_ptr = param->value + strlen(left_val_ptr) + 1;
1200 left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0);
1201 right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0);
1202 recieved_value = simple_strtoul(value, &tmp_ptr, 0);
1206 if ((recieved_value < left_val) ||
1207 (recieved_value > right_val)) {
1208 pr_err("Illegal response \"%s=%u\", value must"
1209 " be between %u and %u.\n", param->name,
1210 recieved_value, left_val, right_val);
1213 } else if (IS_TYPE_VALUE_LIST(param)) {
1214 char *comma_ptr = NULL, *tmp_ptr = NULL;
1216 comma_ptr = strchr(value, ',');
1218 pr_err("Illegal \",\" in response for \"%s\".\n",
1223 tmp_ptr = iscsi_check_valuelist_for_support(param, value);
1228 if (iscsi_update_param_value(param, value) < 0)
1234 static int iscsi_check_value(struct iscsi_param *param, char *value)
1236 char *comma_ptr = NULL;
1238 if (!strcmp(value, REJECT)) {
1239 if (!strcmp(param->name, IFMARKINT) ||
1240 !strcmp(param->name, OFMARKINT)) {
1242 * Reject is not fatal for [I,O]FMarkInt, and causes
1243 * [I,O]FMarker to be reset to No. (See iSCSI v20 A.3.2)
1245 SET_PSTATE_REJECT(param);
1248 pr_err("Received %s=%s\n", param->name, value);
1251 if (!strcmp(value, IRRELEVANT)) {
1252 pr_debug("Received %s=%s\n", param->name, value);
1253 SET_PSTATE_IRRELEVANT(param);
1256 if (!strcmp(value, NOTUNDERSTOOD)) {
1257 if (!IS_PSTATE_PROPOSER(param)) {
1258 pr_err("Received illegal offer %s=%s\n",
1259 param->name, value);
1263 /* #warning FIXME: Add check for X-ExtensionKey here */
1264 pr_err("Standard iSCSI key \"%s\" cannot be answered"
1265 " with \"%s\", protocol error.\n", param->name, value);
1271 comma_ptr = strchr(value, ',');
1273 if (comma_ptr && !IS_TYPE_VALUE_LIST(param)) {
1274 pr_err("Detected value seperator \",\", but"
1275 " key \"%s\" does not allow a value list,"
1276 " protocol error.\n", param->name);
1282 if (strlen(value) > VALUE_MAXLEN) {
1283 pr_err("Value for key \"%s\" exceeds %d,"
1284 " protocol error.\n", param->name,
1289 if (IS_TYPE_BOOL_AND(param) || IS_TYPE_BOOL_OR(param)) {
1290 if (iscsi_check_boolean_value(param, value) < 0)
1292 } else if (IS_TYPE_NUMBER(param)) {
1293 if (iscsi_check_numerical_value(param, value) < 0)
1295 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1296 if (iscsi_check_numerical_range_value(param, value) < 0)
1298 } else if (IS_TYPE_STRING(param) || IS_TYPE_VALUE_LIST(param)) {
1299 if (iscsi_check_string_or_list_value(param, value) < 0)
1302 pr_err("Huh? 0x%02x\n", param->type);
1315 static struct iscsi_param *__iscsi_check_key(
1318 struct iscsi_param_list *param_list)
1320 struct iscsi_param *param;
1322 if (strlen(key) > KEY_MAXLEN) {
1323 pr_err("Length of key name \"%s\" exceeds %d.\n",
1328 param = iscsi_find_param_from_key(key, param_list);
1332 if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1333 pr_err("Key \"%s\" may not be sent to %s,"
1334 " protocol error.\n", param->name,
1335 (sender & SENDER_RECEIVER) ? "target" : "initiator");
1339 if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1340 pr_err("Key \"%s\" may not be sent to %s,"
1341 " protocol error.\n", param->name,
1342 (sender & SENDER_RECEIVER) ? "initiator" : "target");
1349 static struct iscsi_param *iscsi_check_key(
1353 struct iscsi_param_list *param_list)
1355 struct iscsi_param *param;
1357 * Key name length must not exceed 63 bytes. (See iSCSI v20 5.1)
1359 if (strlen(key) > KEY_MAXLEN) {
1360 pr_err("Length of key name \"%s\" exceeds %d.\n",
1365 param = iscsi_find_param_from_key(key, param_list);
1369 if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1370 pr_err("Key \"%s\" may not be sent to %s,"
1371 " protocol error.\n", param->name,
1372 (sender & SENDER_RECEIVER) ? "target" : "initiator");
1375 if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1376 pr_err("Key \"%s\" may not be sent to %s,"
1377 " protocol error.\n", param->name,
1378 (sender & SENDER_RECEIVER) ? "initiator" : "target");
1382 if (IS_PSTATE_ACCEPTOR(param)) {
1383 pr_err("Key \"%s\" received twice, protocol error.\n",
1391 if (!(param->phase & phase)) {
1392 pr_err("Key \"%s\" may not be negotiated during ",
1395 case PHASE_SECURITY:
1396 pr_debug("Security phase.\n");
1398 case PHASE_OPERATIONAL:
1399 pr_debug("Operational phase.\n");
1401 pr_debug("Unknown phase.\n");
1409 static int iscsi_enforce_integrity_rules(
1411 struct iscsi_param_list *param_list)
1414 u8 DataSequenceInOrder = 0;
1415 u8 ErrorRecoveryLevel = 0, SessionType = 0;
1416 u8 IFMarker = 0, OFMarker = 0;
1417 u8 IFMarkInt_Reject = 1, OFMarkInt_Reject = 1;
1418 u32 FirstBurstLength = 0, MaxBurstLength = 0;
1419 struct iscsi_param *param = NULL;
1421 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1422 if (!(param->phase & phase))
1424 if (!strcmp(param->name, SESSIONTYPE))
1425 if (!strcmp(param->value, NORMAL))
1427 if (!strcmp(param->name, ERRORRECOVERYLEVEL))
1428 ErrorRecoveryLevel = simple_strtoul(param->value,
1430 if (!strcmp(param->name, DATASEQUENCEINORDER))
1431 if (!strcmp(param->value, YES))
1432 DataSequenceInOrder = 1;
1433 if (!strcmp(param->name, MAXBURSTLENGTH))
1434 MaxBurstLength = simple_strtoul(param->value,
1436 if (!strcmp(param->name, IFMARKER))
1437 if (!strcmp(param->value, YES))
1439 if (!strcmp(param->name, OFMARKER))
1440 if (!strcmp(param->value, YES))
1442 if (!strcmp(param->name, IFMARKINT))
1443 if (!strcmp(param->value, REJECT))
1444 IFMarkInt_Reject = 1;
1445 if (!strcmp(param->name, OFMARKINT))
1446 if (!strcmp(param->value, REJECT))
1447 OFMarkInt_Reject = 1;
1450 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1451 if (!(param->phase & phase))
1453 if (!SessionType && (!IS_PSTATE_ACCEPTOR(param) &&
1454 (strcmp(param->name, IFMARKER) &&
1455 strcmp(param->name, OFMARKER) &&
1456 strcmp(param->name, IFMARKINT) &&
1457 strcmp(param->name, OFMARKINT))))
1459 if (!strcmp(param->name, MAXOUTSTANDINGR2T) &&
1460 DataSequenceInOrder && (ErrorRecoveryLevel > 0)) {
1461 if (strcmp(param->value, "1")) {
1462 if (iscsi_update_param_value(param, "1") < 0)
1464 pr_debug("Reset \"%s\" to \"%s\".\n",
1465 param->name, param->value);
1468 if (!strcmp(param->name, MAXCONNECTIONS) && !SessionType) {
1469 if (strcmp(param->value, "1")) {
1470 if (iscsi_update_param_value(param, "1") < 0)
1472 pr_debug("Reset \"%s\" to \"%s\".\n",
1473 param->name, param->value);
1476 if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1477 FirstBurstLength = simple_strtoul(param->value,
1479 if (FirstBurstLength > MaxBurstLength) {
1481 memset(tmpbuf, 0, 10);
1482 sprintf(tmpbuf, "%u", MaxBurstLength);
1483 if (iscsi_update_param_value(param, tmpbuf))
1485 pr_debug("Reset \"%s\" to \"%s\".\n",
1486 param->name, param->value);
1489 if (!strcmp(param->name, IFMARKER) && IFMarkInt_Reject) {
1490 if (iscsi_update_param_value(param, NO) < 0)
1493 pr_debug("Reset \"%s\" to \"%s\".\n",
1494 param->name, param->value);
1496 if (!strcmp(param->name, OFMARKER) && OFMarkInt_Reject) {
1497 if (iscsi_update_param_value(param, NO) < 0)
1500 pr_debug("Reset \"%s\" to \"%s\".\n",
1501 param->name, param->value);
1503 if (!strcmp(param->name, IFMARKINT) && !IFMarker) {
1504 if (!strcmp(param->value, REJECT))
1506 param->state &= ~PSTATE_NEGOTIATE;
1507 if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1509 pr_debug("Reset \"%s\" to \"%s\".\n",
1510 param->name, param->value);
1512 if (!strcmp(param->name, OFMARKINT) && !OFMarker) {
1513 if (!strcmp(param->value, REJECT))
1515 param->state &= ~PSTATE_NEGOTIATE;
1516 if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1518 pr_debug("Reset \"%s\" to \"%s\".\n",
1519 param->name, param->value);
1526 int iscsi_decode_text_input(
1531 struct iscsi_param_list *param_list)
1533 char *tmpbuf, *start = NULL, *end = NULL;
1535 tmpbuf = kzalloc(length + 1, GFP_KERNEL);
1537 pr_err("Unable to allocate memory for tmpbuf.\n");
1541 memcpy(tmpbuf, textbuf, length);
1542 tmpbuf[length] = '\0';
1544 end = (start + length);
1546 while (start < end) {
1548 struct iscsi_param *param;
1550 if (iscsi_extract_key_value(start, &key, &value) < 0) {
1555 pr_debug("Got key: %s=%s\n", key, value);
1557 if (phase & PHASE_SECURITY) {
1558 if (iscsi_check_for_auth_key(key) > 0) {
1564 param = iscsi_check_key(key, phase, sender, param_list);
1566 if (iscsi_add_notunderstood_response(key,
1567 value, param_list) < 0) {
1571 start += strlen(key) + strlen(value) + 2;
1574 if (iscsi_check_value(param, value) < 0) {
1579 start += strlen(key) + strlen(value) + 2;
1581 if (IS_PSTATE_PROPOSER(param)) {
1582 if (iscsi_check_proposer_state(param, value) < 0) {
1586 SET_PSTATE_RESPONSE_GOT(param);
1588 if (iscsi_check_acceptor_state(param, value) < 0) {
1592 SET_PSTATE_ACCEPTOR(param);
1600 int iscsi_encode_text_output(
1605 struct iscsi_param_list *param_list)
1607 char *output_buf = NULL;
1608 struct iscsi_extra_response *er;
1609 struct iscsi_param *param;
1611 output_buf = textbuf + *length;
1613 if (iscsi_enforce_integrity_rules(phase, param_list) < 0)
1616 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1617 if (!(param->sender & sender))
1619 if (IS_PSTATE_ACCEPTOR(param) &&
1620 !IS_PSTATE_RESPONSE_SENT(param) &&
1621 !IS_PSTATE_REPLY_OPTIONAL(param) &&
1622 (param->phase & phase)) {
1623 *length += sprintf(output_buf, "%s=%s",
1624 param->name, param->value);
1626 output_buf = textbuf + *length;
1627 SET_PSTATE_RESPONSE_SENT(param);
1628 pr_debug("Sending key: %s=%s\n",
1629 param->name, param->value);
1632 if (IS_PSTATE_NEGOTIATE(param) &&
1633 !IS_PSTATE_ACCEPTOR(param) &&
1634 !IS_PSTATE_PROPOSER(param) &&
1635 (param->phase & phase)) {
1636 *length += sprintf(output_buf, "%s=%s",
1637 param->name, param->value);
1639 output_buf = textbuf + *length;
1640 SET_PSTATE_PROPOSER(param);
1641 iscsi_check_proposer_for_optional_reply(param);
1642 pr_debug("Sending key: %s=%s\n",
1643 param->name, param->value);
1647 list_for_each_entry(er, ¶m_list->extra_response_list, er_list) {
1648 *length += sprintf(output_buf, "%s=%s", er->key, er->value);
1650 output_buf = textbuf + *length;
1651 pr_debug("Sending key: %s=%s\n", er->key, er->value);
1653 iscsi_release_extra_responses(param_list);
1658 int iscsi_check_negotiated_keys(struct iscsi_param_list *param_list)
1661 struct iscsi_param *param;
1663 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1664 if (IS_PSTATE_NEGOTIATE(param) &&
1665 IS_PSTATE_PROPOSER(param) &&
1666 !IS_PSTATE_RESPONSE_GOT(param) &&
1667 !IS_PSTATE_REPLY_OPTIONAL(param) &&
1668 !IS_PHASE_DECLARATIVE(param)) {
1669 pr_err("No response for proposed key \"%s\".\n",
1678 int iscsi_change_param_value(
1680 struct iscsi_param_list *param_list,
1683 char *key = NULL, *value = NULL;
1684 struct iscsi_param *param;
1687 if (iscsi_extract_key_value(keyvalue, &key, &value) < 0)
1691 param = __iscsi_check_key(keyvalue, sender, param_list);
1695 param = iscsi_check_key(keyvalue, 0, sender, param_list);
1699 param->set_param = 1;
1700 if (iscsi_check_value(param, value) < 0) {
1701 param->set_param = 0;
1704 param->set_param = 0;
1707 if (iscsi_update_param_value(param, value) < 0)
1713 void iscsi_set_connection_parameters(
1714 struct iscsi_conn_ops *ops,
1715 struct iscsi_param_list *param_list)
1718 struct iscsi_param *param;
1720 pr_debug("---------------------------------------------------"
1721 "---------------\n");
1722 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1723 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1725 if (!strcmp(param->name, AUTHMETHOD)) {
1726 pr_debug("AuthMethod: %s\n",
1728 } else if (!strcmp(param->name, HEADERDIGEST)) {
1729 ops->HeaderDigest = !strcmp(param->value, CRC32C);
1730 pr_debug("HeaderDigest: %s\n",
1732 } else if (!strcmp(param->name, DATADIGEST)) {
1733 ops->DataDigest = !strcmp(param->value, CRC32C);
1734 pr_debug("DataDigest: %s\n",
1736 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1737 ops->MaxRecvDataSegmentLength =
1738 simple_strtoul(param->value, &tmpptr, 0);
1739 pr_debug("MaxRecvDataSegmentLength: %s\n",
1741 } else if (!strcmp(param->name, OFMARKER)) {
1742 ops->OFMarker = !strcmp(param->value, YES);
1743 pr_debug("OFMarker: %s\n",
1745 } else if (!strcmp(param->name, IFMARKER)) {
1746 ops->IFMarker = !strcmp(param->value, YES);
1747 pr_debug("IFMarker: %s\n",
1749 } else if (!strcmp(param->name, OFMARKINT)) {
1751 simple_strtoul(param->value, &tmpptr, 0);
1752 pr_debug("OFMarkInt: %s\n",
1754 } else if (!strcmp(param->name, IFMARKINT)) {
1756 simple_strtoul(param->value, &tmpptr, 0);
1757 pr_debug("IFMarkInt: %s\n",
1761 pr_debug("----------------------------------------------------"
1762 "--------------\n");
1765 void iscsi_set_session_parameters(
1766 struct iscsi_sess_ops *ops,
1767 struct iscsi_param_list *param_list,
1771 struct iscsi_param *param;
1773 pr_debug("----------------------------------------------------"
1774 "--------------\n");
1775 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1776 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1778 if (!strcmp(param->name, INITIATORNAME)) {
1782 snprintf(ops->InitiatorName,
1783 sizeof(ops->InitiatorName),
1784 "%s", param->value);
1785 pr_debug("InitiatorName: %s\n",
1787 } else if (!strcmp(param->name, INITIATORALIAS)) {
1790 snprintf(ops->InitiatorAlias,
1791 sizeof(ops->InitiatorAlias),
1792 "%s", param->value);
1793 pr_debug("InitiatorAlias: %s\n",
1795 } else if (!strcmp(param->name, TARGETNAME)) {
1799 snprintf(ops->TargetName,
1800 sizeof(ops->TargetName),
1801 "%s", param->value);
1802 pr_debug("TargetName: %s\n",
1804 } else if (!strcmp(param->name, TARGETALIAS)) {
1807 snprintf(ops->TargetAlias, sizeof(ops->TargetAlias),
1808 "%s", param->value);
1809 pr_debug("TargetAlias: %s\n",
1811 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
1812 ops->TargetPortalGroupTag =
1813 simple_strtoul(param->value, &tmpptr, 0);
1814 pr_debug("TargetPortalGroupTag: %s\n",
1816 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
1817 ops->MaxConnections =
1818 simple_strtoul(param->value, &tmpptr, 0);
1819 pr_debug("MaxConnections: %s\n",
1821 } else if (!strcmp(param->name, INITIALR2T)) {
1822 ops->InitialR2T = !strcmp(param->value, YES);
1823 pr_debug("InitialR2T: %s\n",
1825 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
1826 ops->ImmediateData = !strcmp(param->value, YES);
1827 pr_debug("ImmediateData: %s\n",
1829 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
1830 ops->MaxBurstLength =
1831 simple_strtoul(param->value, &tmpptr, 0);
1832 pr_debug("MaxBurstLength: %s\n",
1834 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1835 ops->FirstBurstLength =
1836 simple_strtoul(param->value, &tmpptr, 0);
1837 pr_debug("FirstBurstLength: %s\n",
1839 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1840 ops->DefaultTime2Wait =
1841 simple_strtoul(param->value, &tmpptr, 0);
1842 pr_debug("DefaultTime2Wait: %s\n",
1844 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
1845 ops->DefaultTime2Retain =
1846 simple_strtoul(param->value, &tmpptr, 0);
1847 pr_debug("DefaultTime2Retain: %s\n",
1849 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
1850 ops->MaxOutstandingR2T =
1851 simple_strtoul(param->value, &tmpptr, 0);
1852 pr_debug("MaxOutstandingR2T: %s\n",
1854 } else if (!strcmp(param->name, DATAPDUINORDER)) {
1855 ops->DataPDUInOrder = !strcmp(param->value, YES);
1856 pr_debug("DataPDUInOrder: %s\n",
1858 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
1859 ops->DataSequenceInOrder = !strcmp(param->value, YES);
1860 pr_debug("DataSequenceInOrder: %s\n",
1862 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
1863 ops->ErrorRecoveryLevel =
1864 simple_strtoul(param->value, &tmpptr, 0);
1865 pr_debug("ErrorRecoveryLevel: %s\n",
1867 } else if (!strcmp(param->name, SESSIONTYPE)) {
1868 ops->SessionType = !strcmp(param->value, DISCOVERY);
1869 pr_debug("SessionType: %s\n",
1873 pr_debug("----------------------------------------------------"
1874 "--------------\n");