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 strncpy(extra_response->key, key, strlen(key) + 1);
717 strncpy(extra_response->value, NOTUNDERSTOOD,
718 strlen(NOTUNDERSTOOD) + 1);
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 * The GlobalSAN iSCSI Initiator for MacOSX does
765 * not respond to MaxBurstLength, FirstBurstLength,
766 * DefaultTime2Wait or DefaultTime2Retain parameter keys.
767 * So, we set them to 'reply optional' here, and assume the
768 * the defaults from iscsi_parameters.h if the initiator
769 * is not RFC compliant and the keys are not negotiated.
771 if (!strcmp(param->name, MAXBURSTLENGTH))
772 SET_PSTATE_REPLY_OPTIONAL(param);
773 if (!strcmp(param->name, FIRSTBURSTLENGTH))
774 SET_PSTATE_REPLY_OPTIONAL(param);
775 if (!strcmp(param->name, DEFAULTTIME2WAIT))
776 SET_PSTATE_REPLY_OPTIONAL(param);
777 if (!strcmp(param->name, DEFAULTTIME2RETAIN))
778 SET_PSTATE_REPLY_OPTIONAL(param);
780 * Required for gPXE iSCSI boot client
782 if (!strcmp(param->name, MAXCONNECTIONS))
783 SET_PSTATE_REPLY_OPTIONAL(param);
784 } else if (IS_PHASE_DECLARATIVE(param))
785 SET_PSTATE_REPLY_OPTIONAL(param);
788 static int iscsi_check_boolean_value(struct iscsi_param *param, char *value)
790 if (strcmp(value, YES) && strcmp(value, NO)) {
791 pr_err("Illegal value for \"%s\", must be either"
792 " \"%s\" or \"%s\".\n", param->name, YES, NO);
799 static int iscsi_check_numerical_value(struct iscsi_param *param, char *value_ptr)
804 value = simple_strtoul(value_ptr, &tmpptr, 0);
806 /* #warning FIXME: Fix this */
808 if (strspn(endptr, WHITE_SPACE) != strlen(endptr)) {
809 pr_err("Illegal value \"%s\" for \"%s\".\n",
814 if (IS_TYPERANGE_0_TO_2(param)) {
815 if ((value < 0) || (value > 2)) {
816 pr_err("Illegal value for \"%s\", must be"
817 " between 0 and 2.\n", param->name);
822 if (IS_TYPERANGE_0_TO_3600(param)) {
823 if ((value < 0) || (value > 3600)) {
824 pr_err("Illegal value for \"%s\", must be"
825 " between 0 and 3600.\n", param->name);
830 if (IS_TYPERANGE_0_TO_32767(param)) {
831 if ((value < 0) || (value > 32767)) {
832 pr_err("Illegal value for \"%s\", must be"
833 " between 0 and 32767.\n", param->name);
838 if (IS_TYPERANGE_0_TO_65535(param)) {
839 if ((value < 0) || (value > 65535)) {
840 pr_err("Illegal value for \"%s\", must be"
841 " between 0 and 65535.\n", param->name);
846 if (IS_TYPERANGE_1_TO_65535(param)) {
847 if ((value < 1) || (value > 65535)) {
848 pr_err("Illegal value for \"%s\", must be"
849 " between 1 and 65535.\n", param->name);
854 if (IS_TYPERANGE_2_TO_3600(param)) {
855 if ((value < 2) || (value > 3600)) {
856 pr_err("Illegal value for \"%s\", must be"
857 " between 2 and 3600.\n", param->name);
862 if (IS_TYPERANGE_512_TO_16777215(param)) {
863 if ((value < 512) || (value > 16777215)) {
864 pr_err("Illegal value for \"%s\", must be"
865 " between 512 and 16777215.\n", param->name);
874 static int iscsi_check_numerical_range_value(struct iscsi_param *param, char *value)
876 char *left_val_ptr = NULL, *right_val_ptr = NULL;
877 char *tilde_ptr = NULL, *tmp_ptr = NULL;
878 u32 left_val, right_val, local_left_val, local_right_val;
880 if (strcmp(param->name, IFMARKINT) &&
881 strcmp(param->name, OFMARKINT)) {
882 pr_err("Only parameters \"%s\" or \"%s\" may contain a"
883 " numerical range value.\n", IFMARKINT, OFMARKINT);
887 if (IS_PSTATE_PROPOSER(param))
890 tilde_ptr = strchr(value, '~');
892 pr_err("Unable to locate numerical range indicator"
893 " \"~\" for \"%s\".\n", param->name);
898 left_val_ptr = value;
899 right_val_ptr = value + strlen(left_val_ptr) + 1;
901 if (iscsi_check_numerical_value(param, left_val_ptr) < 0)
903 if (iscsi_check_numerical_value(param, right_val_ptr) < 0)
906 left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0);
907 right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0);
910 if (right_val < left_val) {
911 pr_err("Numerical range for parameter \"%s\" contains"
912 " a right value which is less than the left.\n",
918 * For now, enforce reasonable defaults for [I,O]FMarkInt.
920 tilde_ptr = strchr(param->value, '~');
922 pr_err("Unable to locate numerical range indicator"
923 " \"~\" for \"%s\".\n", param->name);
928 left_val_ptr = param->value;
929 right_val_ptr = param->value + strlen(left_val_ptr) + 1;
931 local_left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0);
932 local_right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0);
935 if (param->set_param) {
936 if ((left_val < local_left_val) ||
937 (right_val < local_left_val)) {
938 pr_err("Passed value range \"%u~%u\" is below"
939 " minimum left value \"%u\" for key \"%s\","
940 " rejecting.\n", left_val, right_val,
941 local_left_val, param->name);
945 if ((left_val < local_left_val) &&
946 (right_val < local_left_val)) {
947 pr_err("Received value range \"%u~%u\" is"
948 " below minimum left value \"%u\" for key"
949 " \"%s\", rejecting.\n", left_val, right_val,
950 local_left_val, param->name);
951 SET_PSTATE_REJECT(param);
952 if (iscsi_update_param_value(param, REJECT) < 0)
960 static int iscsi_check_string_or_list_value(struct iscsi_param *param, char *value)
962 if (IS_PSTATE_PROPOSER(param))
965 if (IS_TYPERANGE_AUTH_PARAM(param)) {
966 if (strcmp(value, KRB5) && strcmp(value, SPKM1) &&
967 strcmp(value, SPKM2) && strcmp(value, SRP) &&
968 strcmp(value, CHAP) && strcmp(value, NONE)) {
969 pr_err("Illegal value for \"%s\", must be"
970 " \"%s\", \"%s\", \"%s\", \"%s\", \"%s\""
971 " or \"%s\".\n", param->name, KRB5,
972 SPKM1, SPKM2, SRP, CHAP, NONE);
976 if (IS_TYPERANGE_DIGEST_PARAM(param)) {
977 if (strcmp(value, CRC32C) && strcmp(value, NONE)) {
978 pr_err("Illegal value for \"%s\", must be"
979 " \"%s\" or \"%s\".\n", param->name,
984 if (IS_TYPERANGE_SESSIONTYPE(param)) {
985 if (strcmp(value, DISCOVERY) && strcmp(value, NORMAL)) {
986 pr_err("Illegal value for \"%s\", must be"
987 " \"%s\" or \"%s\".\n", param->name,
997 * This function is used to pick a value range number, currently just
998 * returns the lesser of both right values.
1000 static char *iscsi_get_value_from_number_range(
1001 struct iscsi_param *param,
1004 char *end_ptr, *tilde_ptr1 = NULL, *tilde_ptr2 = NULL;
1005 u32 acceptor_right_value, proposer_right_value;
1007 tilde_ptr1 = strchr(value, '~');
1010 *tilde_ptr1++ = '\0';
1011 proposer_right_value = simple_strtoul(tilde_ptr1, &end_ptr, 0);
1013 tilde_ptr2 = strchr(param->value, '~');
1016 *tilde_ptr2++ = '\0';
1017 acceptor_right_value = simple_strtoul(tilde_ptr2, &end_ptr, 0);
1019 return (acceptor_right_value >= proposer_right_value) ?
1020 tilde_ptr1 : tilde_ptr2;
1023 static char *iscsi_check_valuelist_for_support(
1024 struct iscsi_param *param,
1027 char *tmp1 = NULL, *tmp2 = NULL;
1028 char *acceptor_values = NULL, *proposer_values = NULL;
1030 acceptor_values = param->value;
1031 proposer_values = value;
1034 if (!proposer_values)
1036 tmp1 = strchr(proposer_values, ',');
1039 acceptor_values = param->value;
1041 if (!acceptor_values) {
1046 tmp2 = strchr(acceptor_values, ',');
1049 if (!acceptor_values || !proposer_values) {
1056 if (!strcmp(acceptor_values, proposer_values)) {
1064 acceptor_values = tmp2;
1065 if (!acceptor_values)
1067 } while (acceptor_values);
1070 proposer_values = tmp1;
1071 } while (proposer_values);
1074 return proposer_values;
1077 static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value)
1079 u8 acceptor_boolean_value = 0, proposer_boolean_value = 0;
1080 char *negoitated_value = NULL;
1082 if (IS_PSTATE_ACCEPTOR(param)) {
1083 pr_err("Received key \"%s\" twice, protocol error.\n",
1088 if (IS_PSTATE_REJECT(param))
1091 if (IS_TYPE_BOOL_AND(param)) {
1092 if (!strcmp(value, YES))
1093 proposer_boolean_value = 1;
1094 if (!strcmp(param->value, YES))
1095 acceptor_boolean_value = 1;
1096 if (acceptor_boolean_value && proposer_boolean_value)
1099 if (iscsi_update_param_value(param, NO) < 0)
1101 if (!proposer_boolean_value)
1102 SET_PSTATE_REPLY_OPTIONAL(param);
1104 } else if (IS_TYPE_BOOL_OR(param)) {
1105 if (!strcmp(value, YES))
1106 proposer_boolean_value = 1;
1107 if (!strcmp(param->value, YES))
1108 acceptor_boolean_value = 1;
1109 if (acceptor_boolean_value || proposer_boolean_value) {
1110 if (iscsi_update_param_value(param, YES) < 0)
1112 if (proposer_boolean_value)
1113 SET_PSTATE_REPLY_OPTIONAL(param);
1115 } else if (IS_TYPE_NUMBER(param)) {
1116 char *tmpptr, buf[10];
1117 u32 acceptor_value = simple_strtoul(param->value, &tmpptr, 0);
1118 u32 proposer_value = simple_strtoul(value, &tmpptr, 0);
1122 if (!strcmp(param->name, MAXCONNECTIONS) ||
1123 !strcmp(param->name, MAXBURSTLENGTH) ||
1124 !strcmp(param->name, FIRSTBURSTLENGTH) ||
1125 !strcmp(param->name, MAXOUTSTANDINGR2T) ||
1126 !strcmp(param->name, DEFAULTTIME2RETAIN) ||
1127 !strcmp(param->name, ERRORRECOVERYLEVEL)) {
1128 if (proposer_value > acceptor_value) {
1129 sprintf(buf, "%u", acceptor_value);
1130 if (iscsi_update_param_value(param,
1134 if (iscsi_update_param_value(param, value) < 0)
1137 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1138 if (acceptor_value > proposer_value) {
1139 sprintf(buf, "%u", acceptor_value);
1140 if (iscsi_update_param_value(param,
1144 if (iscsi_update_param_value(param, value) < 0)
1148 if (iscsi_update_param_value(param, value) < 0)
1152 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH))
1153 SET_PSTATE_REPLY_OPTIONAL(param);
1154 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1155 negoitated_value = iscsi_get_value_from_number_range(
1157 if (!negoitated_value)
1159 if (iscsi_update_param_value(param, negoitated_value) < 0)
1161 } else if (IS_TYPE_VALUE_LIST(param)) {
1162 negoitated_value = iscsi_check_valuelist_for_support(
1164 if (!negoitated_value) {
1165 pr_err("Proposer's value list \"%s\" contains"
1166 " no valid values from Acceptor's value list"
1167 " \"%s\".\n", value, param->value);
1170 if (iscsi_update_param_value(param, negoitated_value) < 0)
1172 } else if (IS_PHASE_DECLARATIVE(param)) {
1173 if (iscsi_update_param_value(param, value) < 0)
1175 SET_PSTATE_REPLY_OPTIONAL(param);
1181 static int iscsi_check_proposer_state(struct iscsi_param *param, char *value)
1183 if (IS_PSTATE_RESPONSE_GOT(param)) {
1184 pr_err("Received key \"%s\" twice, protocol error.\n",
1189 if (IS_TYPE_NUMBER_RANGE(param)) {
1190 u32 left_val = 0, right_val = 0, recieved_value = 0;
1191 char *left_val_ptr = NULL, *right_val_ptr = NULL;
1192 char *tilde_ptr = NULL, *tmp_ptr = NULL;
1194 if (!strcmp(value, IRRELEVANT) || !strcmp(value, REJECT)) {
1195 if (iscsi_update_param_value(param, value) < 0)
1200 tilde_ptr = strchr(value, '~');
1202 pr_err("Illegal \"~\" in response for \"%s\".\n",
1206 tilde_ptr = strchr(param->value, '~');
1208 pr_err("Unable to locate numerical range"
1209 " indicator \"~\" for \"%s\".\n", param->name);
1214 left_val_ptr = param->value;
1215 right_val_ptr = param->value + strlen(left_val_ptr) + 1;
1216 left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0);
1217 right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0);
1218 recieved_value = simple_strtoul(value, &tmp_ptr, 0);
1222 if ((recieved_value < left_val) ||
1223 (recieved_value > right_val)) {
1224 pr_err("Illegal response \"%s=%u\", value must"
1225 " be between %u and %u.\n", param->name,
1226 recieved_value, left_val, right_val);
1229 } else if (IS_TYPE_VALUE_LIST(param)) {
1230 char *comma_ptr = NULL, *tmp_ptr = NULL;
1232 comma_ptr = strchr(value, ',');
1234 pr_err("Illegal \",\" in response for \"%s\".\n",
1239 tmp_ptr = iscsi_check_valuelist_for_support(param, value);
1244 if (iscsi_update_param_value(param, value) < 0)
1250 static int iscsi_check_value(struct iscsi_param *param, char *value)
1252 char *comma_ptr = NULL;
1254 if (!strcmp(value, REJECT)) {
1255 if (!strcmp(param->name, IFMARKINT) ||
1256 !strcmp(param->name, OFMARKINT)) {
1258 * Reject is not fatal for [I,O]FMarkInt, and causes
1259 * [I,O]FMarker to be reset to No. (See iSCSI v20 A.3.2)
1261 SET_PSTATE_REJECT(param);
1264 pr_err("Received %s=%s\n", param->name, value);
1267 if (!strcmp(value, IRRELEVANT)) {
1268 pr_debug("Received %s=%s\n", param->name, value);
1269 SET_PSTATE_IRRELEVANT(param);
1272 if (!strcmp(value, NOTUNDERSTOOD)) {
1273 if (!IS_PSTATE_PROPOSER(param)) {
1274 pr_err("Received illegal offer %s=%s\n",
1275 param->name, value);
1279 /* #warning FIXME: Add check for X-ExtensionKey here */
1280 pr_err("Standard iSCSI key \"%s\" cannot be answered"
1281 " with \"%s\", protocol error.\n", param->name, value);
1287 comma_ptr = strchr(value, ',');
1289 if (comma_ptr && !IS_TYPE_VALUE_LIST(param)) {
1290 pr_err("Detected value seperator \",\", but"
1291 " key \"%s\" does not allow a value list,"
1292 " protocol error.\n", param->name);
1298 if (strlen(value) > VALUE_MAXLEN) {
1299 pr_err("Value for key \"%s\" exceeds %d,"
1300 " protocol error.\n", param->name,
1305 if (IS_TYPE_BOOL_AND(param) || IS_TYPE_BOOL_OR(param)) {
1306 if (iscsi_check_boolean_value(param, value) < 0)
1308 } else if (IS_TYPE_NUMBER(param)) {
1309 if (iscsi_check_numerical_value(param, value) < 0)
1311 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1312 if (iscsi_check_numerical_range_value(param, value) < 0)
1314 } else if (IS_TYPE_STRING(param) || IS_TYPE_VALUE_LIST(param)) {
1315 if (iscsi_check_string_or_list_value(param, value) < 0)
1318 pr_err("Huh? 0x%02x\n", param->type);
1331 static struct iscsi_param *__iscsi_check_key(
1334 struct iscsi_param_list *param_list)
1336 struct iscsi_param *param;
1338 if (strlen(key) > KEY_MAXLEN) {
1339 pr_err("Length of key name \"%s\" exceeds %d.\n",
1344 param = iscsi_find_param_from_key(key, param_list);
1348 if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1349 pr_err("Key \"%s\" may not be sent to %s,"
1350 " protocol error.\n", param->name,
1351 (sender & SENDER_RECEIVER) ? "target" : "initiator");
1355 if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1356 pr_err("Key \"%s\" may not be sent to %s,"
1357 " protocol error.\n", param->name,
1358 (sender & SENDER_RECEIVER) ? "initiator" : "target");
1365 static struct iscsi_param *iscsi_check_key(
1369 struct iscsi_param_list *param_list)
1371 struct iscsi_param *param;
1373 * Key name length must not exceed 63 bytes. (See iSCSI v20 5.1)
1375 if (strlen(key) > KEY_MAXLEN) {
1376 pr_err("Length of key name \"%s\" exceeds %d.\n",
1381 param = iscsi_find_param_from_key(key, param_list);
1385 if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1386 pr_err("Key \"%s\" may not be sent to %s,"
1387 " protocol error.\n", param->name,
1388 (sender & SENDER_RECEIVER) ? "target" : "initiator");
1391 if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1392 pr_err("Key \"%s\" may not be sent to %s,"
1393 " protocol error.\n", param->name,
1394 (sender & SENDER_RECEIVER) ? "initiator" : "target");
1398 if (IS_PSTATE_ACCEPTOR(param)) {
1399 pr_err("Key \"%s\" received twice, protocol error.\n",
1407 if (!(param->phase & phase)) {
1408 pr_err("Key \"%s\" may not be negotiated during ",
1411 case PHASE_SECURITY:
1412 pr_debug("Security phase.\n");
1414 case PHASE_OPERATIONAL:
1415 pr_debug("Operational phase.\n");
1417 pr_debug("Unknown phase.\n");
1425 static int iscsi_enforce_integrity_rules(
1427 struct iscsi_param_list *param_list)
1430 u8 DataSequenceInOrder = 0;
1431 u8 ErrorRecoveryLevel = 0, SessionType = 0;
1432 u8 IFMarker = 0, OFMarker = 0;
1433 u8 IFMarkInt_Reject = 0, OFMarkInt_Reject = 0;
1434 u32 FirstBurstLength = 0, MaxBurstLength = 0;
1435 struct iscsi_param *param = NULL;
1437 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1438 if (!(param->phase & phase))
1440 if (!strcmp(param->name, SESSIONTYPE))
1441 if (!strcmp(param->value, NORMAL))
1443 if (!strcmp(param->name, ERRORRECOVERYLEVEL))
1444 ErrorRecoveryLevel = simple_strtoul(param->value,
1446 if (!strcmp(param->name, DATASEQUENCEINORDER))
1447 if (!strcmp(param->value, YES))
1448 DataSequenceInOrder = 1;
1449 if (!strcmp(param->name, MAXBURSTLENGTH))
1450 MaxBurstLength = simple_strtoul(param->value,
1452 if (!strcmp(param->name, IFMARKER))
1453 if (!strcmp(param->value, YES))
1455 if (!strcmp(param->name, OFMARKER))
1456 if (!strcmp(param->value, YES))
1458 if (!strcmp(param->name, IFMARKINT))
1459 if (!strcmp(param->value, REJECT))
1460 IFMarkInt_Reject = 1;
1461 if (!strcmp(param->name, OFMARKINT))
1462 if (!strcmp(param->value, REJECT))
1463 OFMarkInt_Reject = 1;
1466 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1467 if (!(param->phase & phase))
1469 if (!SessionType && (!IS_PSTATE_ACCEPTOR(param) &&
1470 (strcmp(param->name, IFMARKER) &&
1471 strcmp(param->name, OFMARKER) &&
1472 strcmp(param->name, IFMARKINT) &&
1473 strcmp(param->name, OFMARKINT))))
1475 if (!strcmp(param->name, MAXOUTSTANDINGR2T) &&
1476 DataSequenceInOrder && (ErrorRecoveryLevel > 0)) {
1477 if (strcmp(param->value, "1")) {
1478 if (iscsi_update_param_value(param, "1") < 0)
1480 pr_debug("Reset \"%s\" to \"%s\".\n",
1481 param->name, param->value);
1484 if (!strcmp(param->name, MAXCONNECTIONS) && !SessionType) {
1485 if (strcmp(param->value, "1")) {
1486 if (iscsi_update_param_value(param, "1") < 0)
1488 pr_debug("Reset \"%s\" to \"%s\".\n",
1489 param->name, param->value);
1492 if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1493 FirstBurstLength = simple_strtoul(param->value,
1495 if (FirstBurstLength > MaxBurstLength) {
1497 memset(tmpbuf, 0, 10);
1498 sprintf(tmpbuf, "%u", MaxBurstLength);
1499 if (iscsi_update_param_value(param, tmpbuf))
1501 pr_debug("Reset \"%s\" to \"%s\".\n",
1502 param->name, param->value);
1505 if (!strcmp(param->name, IFMARKER) && IFMarkInt_Reject) {
1506 if (iscsi_update_param_value(param, NO) < 0)
1509 pr_debug("Reset \"%s\" to \"%s\".\n",
1510 param->name, param->value);
1512 if (!strcmp(param->name, OFMARKER) && OFMarkInt_Reject) {
1513 if (iscsi_update_param_value(param, NO) < 0)
1516 pr_debug("Reset \"%s\" to \"%s\".\n",
1517 param->name, param->value);
1519 if (!strcmp(param->name, IFMARKINT) && !IFMarker) {
1520 if (!strcmp(param->value, REJECT))
1522 param->state &= ~PSTATE_NEGOTIATE;
1523 if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1525 pr_debug("Reset \"%s\" to \"%s\".\n",
1526 param->name, param->value);
1528 if (!strcmp(param->name, OFMARKINT) && !OFMarker) {
1529 if (!strcmp(param->value, REJECT))
1531 param->state &= ~PSTATE_NEGOTIATE;
1532 if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1534 pr_debug("Reset \"%s\" to \"%s\".\n",
1535 param->name, param->value);
1542 int iscsi_decode_text_input(
1547 struct iscsi_param_list *param_list)
1549 char *tmpbuf, *start = NULL, *end = NULL;
1551 tmpbuf = kzalloc(length + 1, GFP_KERNEL);
1553 pr_err("Unable to allocate memory for tmpbuf.\n");
1557 memcpy(tmpbuf, textbuf, length);
1558 tmpbuf[length] = '\0';
1560 end = (start + length);
1562 while (start < end) {
1564 struct iscsi_param *param;
1566 if (iscsi_extract_key_value(start, &key, &value) < 0) {
1571 pr_debug("Got key: %s=%s\n", key, value);
1573 if (phase & PHASE_SECURITY) {
1574 if (iscsi_check_for_auth_key(key) > 0) {
1575 char *tmpptr = key + strlen(key);
1582 param = iscsi_check_key(key, phase, sender, param_list);
1584 if (iscsi_add_notunderstood_response(key,
1585 value, param_list) < 0) {
1589 start += strlen(key) + strlen(value) + 2;
1592 if (iscsi_check_value(param, value) < 0) {
1597 start += strlen(key) + strlen(value) + 2;
1599 if (IS_PSTATE_PROPOSER(param)) {
1600 if (iscsi_check_proposer_state(param, value) < 0) {
1604 SET_PSTATE_RESPONSE_GOT(param);
1606 if (iscsi_check_acceptor_state(param, value) < 0) {
1610 SET_PSTATE_ACCEPTOR(param);
1618 int iscsi_encode_text_output(
1623 struct iscsi_param_list *param_list)
1625 char *output_buf = NULL;
1626 struct iscsi_extra_response *er;
1627 struct iscsi_param *param;
1629 output_buf = textbuf + *length;
1631 if (iscsi_enforce_integrity_rules(phase, param_list) < 0)
1634 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1635 if (!(param->sender & sender))
1637 if (IS_PSTATE_ACCEPTOR(param) &&
1638 !IS_PSTATE_RESPONSE_SENT(param) &&
1639 !IS_PSTATE_REPLY_OPTIONAL(param) &&
1640 (param->phase & phase)) {
1641 *length += sprintf(output_buf, "%s=%s",
1642 param->name, param->value);
1644 output_buf = textbuf + *length;
1645 SET_PSTATE_RESPONSE_SENT(param);
1646 pr_debug("Sending key: %s=%s\n",
1647 param->name, param->value);
1650 if (IS_PSTATE_NEGOTIATE(param) &&
1651 !IS_PSTATE_ACCEPTOR(param) &&
1652 !IS_PSTATE_PROPOSER(param) &&
1653 (param->phase & phase)) {
1654 *length += sprintf(output_buf, "%s=%s",
1655 param->name, param->value);
1657 output_buf = textbuf + *length;
1658 SET_PSTATE_PROPOSER(param);
1659 iscsi_check_proposer_for_optional_reply(param);
1660 pr_debug("Sending key: %s=%s\n",
1661 param->name, param->value);
1665 list_for_each_entry(er, ¶m_list->extra_response_list, er_list) {
1666 *length += sprintf(output_buf, "%s=%s", er->key, er->value);
1668 output_buf = textbuf + *length;
1669 pr_debug("Sending key: %s=%s\n", er->key, er->value);
1671 iscsi_release_extra_responses(param_list);
1676 int iscsi_check_negotiated_keys(struct iscsi_param_list *param_list)
1679 struct iscsi_param *param;
1681 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1682 if (IS_PSTATE_NEGOTIATE(param) &&
1683 IS_PSTATE_PROPOSER(param) &&
1684 !IS_PSTATE_RESPONSE_GOT(param) &&
1685 !IS_PSTATE_REPLY_OPTIONAL(param) &&
1686 !IS_PHASE_DECLARATIVE(param)) {
1687 pr_err("No response for proposed key \"%s\".\n",
1696 int iscsi_change_param_value(
1698 struct iscsi_param_list *param_list,
1701 char *key = NULL, *value = NULL;
1702 struct iscsi_param *param;
1705 if (iscsi_extract_key_value(keyvalue, &key, &value) < 0)
1709 param = __iscsi_check_key(keyvalue, sender, param_list);
1713 param = iscsi_check_key(keyvalue, 0, sender, param_list);
1717 param->set_param = 1;
1718 if (iscsi_check_value(param, value) < 0) {
1719 param->set_param = 0;
1722 param->set_param = 0;
1725 if (iscsi_update_param_value(param, value) < 0)
1731 void iscsi_set_connection_parameters(
1732 struct iscsi_conn_ops *ops,
1733 struct iscsi_param_list *param_list)
1736 struct iscsi_param *param;
1738 pr_debug("---------------------------------------------------"
1739 "---------------\n");
1740 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1741 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1743 if (!strcmp(param->name, AUTHMETHOD)) {
1744 pr_debug("AuthMethod: %s\n",
1746 } else if (!strcmp(param->name, HEADERDIGEST)) {
1747 ops->HeaderDigest = !strcmp(param->value, CRC32C);
1748 pr_debug("HeaderDigest: %s\n",
1750 } else if (!strcmp(param->name, DATADIGEST)) {
1751 ops->DataDigest = !strcmp(param->value, CRC32C);
1752 pr_debug("DataDigest: %s\n",
1754 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1755 ops->MaxRecvDataSegmentLength =
1756 simple_strtoul(param->value, &tmpptr, 0);
1757 pr_debug("MaxRecvDataSegmentLength: %s\n",
1759 } else if (!strcmp(param->name, OFMARKER)) {
1760 ops->OFMarker = !strcmp(param->value, YES);
1761 pr_debug("OFMarker: %s\n",
1763 } else if (!strcmp(param->name, IFMARKER)) {
1764 ops->IFMarker = !strcmp(param->value, YES);
1765 pr_debug("IFMarker: %s\n",
1767 } else if (!strcmp(param->name, OFMARKINT)) {
1769 simple_strtoul(param->value, &tmpptr, 0);
1770 pr_debug("OFMarkInt: %s\n",
1772 } else if (!strcmp(param->name, IFMARKINT)) {
1774 simple_strtoul(param->value, &tmpptr, 0);
1775 pr_debug("IFMarkInt: %s\n",
1779 pr_debug("----------------------------------------------------"
1780 "--------------\n");
1783 void iscsi_set_session_parameters(
1784 struct iscsi_sess_ops *ops,
1785 struct iscsi_param_list *param_list,
1789 struct iscsi_param *param;
1791 pr_debug("----------------------------------------------------"
1792 "--------------\n");
1793 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1794 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1796 if (!strcmp(param->name, INITIATORNAME)) {
1800 snprintf(ops->InitiatorName,
1801 sizeof(ops->InitiatorName),
1802 "%s", param->value);
1803 pr_debug("InitiatorName: %s\n",
1805 } else if (!strcmp(param->name, INITIATORALIAS)) {
1808 snprintf(ops->InitiatorAlias,
1809 sizeof(ops->InitiatorAlias),
1810 "%s", param->value);
1811 pr_debug("InitiatorAlias: %s\n",
1813 } else if (!strcmp(param->name, TARGETNAME)) {
1817 snprintf(ops->TargetName,
1818 sizeof(ops->TargetName),
1819 "%s", param->value);
1820 pr_debug("TargetName: %s\n",
1822 } else if (!strcmp(param->name, TARGETALIAS)) {
1825 snprintf(ops->TargetAlias, sizeof(ops->TargetAlias),
1826 "%s", param->value);
1827 pr_debug("TargetAlias: %s\n",
1829 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
1830 ops->TargetPortalGroupTag =
1831 simple_strtoul(param->value, &tmpptr, 0);
1832 pr_debug("TargetPortalGroupTag: %s\n",
1834 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
1835 ops->MaxConnections =
1836 simple_strtoul(param->value, &tmpptr, 0);
1837 pr_debug("MaxConnections: %s\n",
1839 } else if (!strcmp(param->name, INITIALR2T)) {
1840 ops->InitialR2T = !strcmp(param->value, YES);
1841 pr_debug("InitialR2T: %s\n",
1843 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
1844 ops->ImmediateData = !strcmp(param->value, YES);
1845 pr_debug("ImmediateData: %s\n",
1847 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
1848 ops->MaxBurstLength =
1849 simple_strtoul(param->value, &tmpptr, 0);
1850 pr_debug("MaxBurstLength: %s\n",
1852 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1853 ops->FirstBurstLength =
1854 simple_strtoul(param->value, &tmpptr, 0);
1855 pr_debug("FirstBurstLength: %s\n",
1857 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1858 ops->DefaultTime2Wait =
1859 simple_strtoul(param->value, &tmpptr, 0);
1860 pr_debug("DefaultTime2Wait: %s\n",
1862 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
1863 ops->DefaultTime2Retain =
1864 simple_strtoul(param->value, &tmpptr, 0);
1865 pr_debug("DefaultTime2Retain: %s\n",
1867 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
1868 ops->MaxOutstandingR2T =
1869 simple_strtoul(param->value, &tmpptr, 0);
1870 pr_debug("MaxOutstandingR2T: %s\n",
1872 } else if (!strcmp(param->name, DATAPDUINORDER)) {
1873 ops->DataPDUInOrder = !strcmp(param->value, YES);
1874 pr_debug("DataPDUInOrder: %s\n",
1876 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
1877 ops->DataSequenceInOrder = !strcmp(param->value, YES);
1878 pr_debug("DataSequenceInOrder: %s\n",
1880 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
1881 ops->ErrorRecoveryLevel =
1882 simple_strtoul(param->value, &tmpptr, 0);
1883 pr_debug("ErrorRecoveryLevel: %s\n",
1885 } else if (!strcmp(param->name, SESSIONTYPE)) {
1886 ops->SessionType = !strcmp(param->value, DISCOVERY);
1887 pr_debug("SessionType: %s\n",
1891 pr_debug("----------------------------------------------------"
1892 "--------------\n");