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;
878 u32 left_val, right_val, local_left_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, NULL, 0);
907 right_val = simple_strtoul(right_val_ptr, NULL, 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, NULL, 0);
934 if (param->set_param) {
935 if ((left_val < local_left_val) ||
936 (right_val < local_left_val)) {
937 pr_err("Passed value range \"%u~%u\" is below"
938 " minimum left value \"%u\" for key \"%s\","
939 " rejecting.\n", left_val, right_val,
940 local_left_val, param->name);
944 if ((left_val < local_left_val) &&
945 (right_val < local_left_val)) {
946 pr_err("Received value range \"%u~%u\" is"
947 " below minimum left value \"%u\" for key"
948 " \"%s\", rejecting.\n", left_val, right_val,
949 local_left_val, param->name);
950 SET_PSTATE_REJECT(param);
951 if (iscsi_update_param_value(param, REJECT) < 0)
959 static int iscsi_check_string_or_list_value(struct iscsi_param *param, char *value)
961 if (IS_PSTATE_PROPOSER(param))
964 if (IS_TYPERANGE_AUTH_PARAM(param)) {
965 if (strcmp(value, KRB5) && strcmp(value, SPKM1) &&
966 strcmp(value, SPKM2) && strcmp(value, SRP) &&
967 strcmp(value, CHAP) && strcmp(value, NONE)) {
968 pr_err("Illegal value for \"%s\", must be"
969 " \"%s\", \"%s\", \"%s\", \"%s\", \"%s\""
970 " or \"%s\".\n", param->name, KRB5,
971 SPKM1, SPKM2, SRP, CHAP, NONE);
975 if (IS_TYPERANGE_DIGEST_PARAM(param)) {
976 if (strcmp(value, CRC32C) && strcmp(value, NONE)) {
977 pr_err("Illegal value for \"%s\", must be"
978 " \"%s\" or \"%s\".\n", param->name,
983 if (IS_TYPERANGE_SESSIONTYPE(param)) {
984 if (strcmp(value, DISCOVERY) && strcmp(value, NORMAL)) {
985 pr_err("Illegal value for \"%s\", must be"
986 " \"%s\" or \"%s\".\n", param->name,
996 * This function is used to pick a value range number, currently just
997 * returns the lesser of both right values.
999 static char *iscsi_get_value_from_number_range(
1000 struct iscsi_param *param,
1003 char *end_ptr, *tilde_ptr1 = NULL, *tilde_ptr2 = NULL;
1004 u32 acceptor_right_value, proposer_right_value;
1006 tilde_ptr1 = strchr(value, '~');
1009 *tilde_ptr1++ = '\0';
1010 proposer_right_value = simple_strtoul(tilde_ptr1, &end_ptr, 0);
1012 tilde_ptr2 = strchr(param->value, '~');
1015 *tilde_ptr2++ = '\0';
1016 acceptor_right_value = simple_strtoul(tilde_ptr2, &end_ptr, 0);
1018 return (acceptor_right_value >= proposer_right_value) ?
1019 tilde_ptr1 : tilde_ptr2;
1022 static char *iscsi_check_valuelist_for_support(
1023 struct iscsi_param *param,
1026 char *tmp1 = NULL, *tmp2 = NULL;
1027 char *acceptor_values = NULL, *proposer_values = NULL;
1029 acceptor_values = param->value;
1030 proposer_values = value;
1033 if (!proposer_values)
1035 tmp1 = strchr(proposer_values, ',');
1038 acceptor_values = param->value;
1040 if (!acceptor_values) {
1045 tmp2 = strchr(acceptor_values, ',');
1048 if (!acceptor_values || !proposer_values) {
1055 if (!strcmp(acceptor_values, proposer_values)) {
1063 acceptor_values = tmp2;
1064 if (!acceptor_values)
1066 } while (acceptor_values);
1069 proposer_values = tmp1;
1070 } while (proposer_values);
1073 return proposer_values;
1076 static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value)
1078 u8 acceptor_boolean_value = 0, proposer_boolean_value = 0;
1079 char *negoitated_value = NULL;
1081 if (IS_PSTATE_ACCEPTOR(param)) {
1082 pr_err("Received key \"%s\" twice, protocol error.\n",
1087 if (IS_PSTATE_REJECT(param))
1090 if (IS_TYPE_BOOL_AND(param)) {
1091 if (!strcmp(value, YES))
1092 proposer_boolean_value = 1;
1093 if (!strcmp(param->value, YES))
1094 acceptor_boolean_value = 1;
1095 if (acceptor_boolean_value && proposer_boolean_value)
1098 if (iscsi_update_param_value(param, NO) < 0)
1100 if (!proposer_boolean_value)
1101 SET_PSTATE_REPLY_OPTIONAL(param);
1103 } else if (IS_TYPE_BOOL_OR(param)) {
1104 if (!strcmp(value, YES))
1105 proposer_boolean_value = 1;
1106 if (!strcmp(param->value, YES))
1107 acceptor_boolean_value = 1;
1108 if (acceptor_boolean_value || proposer_boolean_value) {
1109 if (iscsi_update_param_value(param, YES) < 0)
1111 if (proposer_boolean_value)
1112 SET_PSTATE_REPLY_OPTIONAL(param);
1114 } else if (IS_TYPE_NUMBER(param)) {
1115 char *tmpptr, buf[10];
1116 u32 acceptor_value = simple_strtoul(param->value, &tmpptr, 0);
1117 u32 proposer_value = simple_strtoul(value, &tmpptr, 0);
1121 if (!strcmp(param->name, MAXCONNECTIONS) ||
1122 !strcmp(param->name, MAXBURSTLENGTH) ||
1123 !strcmp(param->name, FIRSTBURSTLENGTH) ||
1124 !strcmp(param->name, MAXOUTSTANDINGR2T) ||
1125 !strcmp(param->name, DEFAULTTIME2RETAIN) ||
1126 !strcmp(param->name, ERRORRECOVERYLEVEL)) {
1127 if (proposer_value > acceptor_value) {
1128 sprintf(buf, "%u", acceptor_value);
1129 if (iscsi_update_param_value(param,
1133 if (iscsi_update_param_value(param, value) < 0)
1136 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1137 if (acceptor_value > proposer_value) {
1138 sprintf(buf, "%u", acceptor_value);
1139 if (iscsi_update_param_value(param,
1143 if (iscsi_update_param_value(param, value) < 0)
1147 if (iscsi_update_param_value(param, value) < 0)
1151 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH))
1152 SET_PSTATE_REPLY_OPTIONAL(param);
1153 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1154 negoitated_value = iscsi_get_value_from_number_range(
1156 if (!negoitated_value)
1158 if (iscsi_update_param_value(param, negoitated_value) < 0)
1160 } else if (IS_TYPE_VALUE_LIST(param)) {
1161 negoitated_value = iscsi_check_valuelist_for_support(
1163 if (!negoitated_value) {
1164 pr_err("Proposer's value list \"%s\" contains"
1165 " no valid values from Acceptor's value list"
1166 " \"%s\".\n", value, param->value);
1169 if (iscsi_update_param_value(param, negoitated_value) < 0)
1171 } else if (IS_PHASE_DECLARATIVE(param)) {
1172 if (iscsi_update_param_value(param, value) < 0)
1174 SET_PSTATE_REPLY_OPTIONAL(param);
1180 static int iscsi_check_proposer_state(struct iscsi_param *param, char *value)
1182 if (IS_PSTATE_RESPONSE_GOT(param)) {
1183 pr_err("Received key \"%s\" twice, protocol error.\n",
1188 if (IS_TYPE_NUMBER_RANGE(param)) {
1189 u32 left_val = 0, right_val = 0, recieved_value = 0;
1190 char *left_val_ptr = NULL, *right_val_ptr = NULL;
1191 char *tilde_ptr = NULL;
1193 if (!strcmp(value, IRRELEVANT) || !strcmp(value, REJECT)) {
1194 if (iscsi_update_param_value(param, value) < 0)
1199 tilde_ptr = strchr(value, '~');
1201 pr_err("Illegal \"~\" in response for \"%s\".\n",
1205 tilde_ptr = strchr(param->value, '~');
1207 pr_err("Unable to locate numerical range"
1208 " indicator \"~\" for \"%s\".\n", param->name);
1213 left_val_ptr = param->value;
1214 right_val_ptr = param->value + strlen(left_val_ptr) + 1;
1215 left_val = simple_strtoul(left_val_ptr, NULL, 0);
1216 right_val = simple_strtoul(right_val_ptr, NULL, 0);
1217 recieved_value = simple_strtoul(value, NULL, 0);
1221 if ((recieved_value < left_val) ||
1222 (recieved_value > right_val)) {
1223 pr_err("Illegal response \"%s=%u\", value must"
1224 " be between %u and %u.\n", param->name,
1225 recieved_value, left_val, right_val);
1228 } else if (IS_TYPE_VALUE_LIST(param)) {
1229 char *comma_ptr = NULL, *tmp_ptr = NULL;
1231 comma_ptr = strchr(value, ',');
1233 pr_err("Illegal \",\" in response for \"%s\".\n",
1238 tmp_ptr = iscsi_check_valuelist_for_support(param, value);
1243 if (iscsi_update_param_value(param, value) < 0)
1249 static int iscsi_check_value(struct iscsi_param *param, char *value)
1251 char *comma_ptr = NULL;
1253 if (!strcmp(value, REJECT)) {
1254 if (!strcmp(param->name, IFMARKINT) ||
1255 !strcmp(param->name, OFMARKINT)) {
1257 * Reject is not fatal for [I,O]FMarkInt, and causes
1258 * [I,O]FMarker to be reset to No. (See iSCSI v20 A.3.2)
1260 SET_PSTATE_REJECT(param);
1263 pr_err("Received %s=%s\n", param->name, value);
1266 if (!strcmp(value, IRRELEVANT)) {
1267 pr_debug("Received %s=%s\n", param->name, value);
1268 SET_PSTATE_IRRELEVANT(param);
1271 if (!strcmp(value, NOTUNDERSTOOD)) {
1272 if (!IS_PSTATE_PROPOSER(param)) {
1273 pr_err("Received illegal offer %s=%s\n",
1274 param->name, value);
1278 /* #warning FIXME: Add check for X-ExtensionKey here */
1279 pr_err("Standard iSCSI key \"%s\" cannot be answered"
1280 " with \"%s\", protocol error.\n", param->name, value);
1286 comma_ptr = strchr(value, ',');
1288 if (comma_ptr && !IS_TYPE_VALUE_LIST(param)) {
1289 pr_err("Detected value seperator \",\", but"
1290 " key \"%s\" does not allow a value list,"
1291 " protocol error.\n", param->name);
1297 if (strlen(value) > VALUE_MAXLEN) {
1298 pr_err("Value for key \"%s\" exceeds %d,"
1299 " protocol error.\n", param->name,
1304 if (IS_TYPE_BOOL_AND(param) || IS_TYPE_BOOL_OR(param)) {
1305 if (iscsi_check_boolean_value(param, value) < 0)
1307 } else if (IS_TYPE_NUMBER(param)) {
1308 if (iscsi_check_numerical_value(param, value) < 0)
1310 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1311 if (iscsi_check_numerical_range_value(param, value) < 0)
1313 } else if (IS_TYPE_STRING(param) || IS_TYPE_VALUE_LIST(param)) {
1314 if (iscsi_check_string_or_list_value(param, value) < 0)
1317 pr_err("Huh? 0x%02x\n", param->type);
1330 static struct iscsi_param *__iscsi_check_key(
1333 struct iscsi_param_list *param_list)
1335 struct iscsi_param *param;
1337 if (strlen(key) > KEY_MAXLEN) {
1338 pr_err("Length of key name \"%s\" exceeds %d.\n",
1343 param = iscsi_find_param_from_key(key, param_list);
1347 if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1348 pr_err("Key \"%s\" may not be sent to %s,"
1349 " protocol error.\n", param->name,
1350 (sender & SENDER_RECEIVER) ? "target" : "initiator");
1354 if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1355 pr_err("Key \"%s\" may not be sent to %s,"
1356 " protocol error.\n", param->name,
1357 (sender & SENDER_RECEIVER) ? "initiator" : "target");
1364 static struct iscsi_param *iscsi_check_key(
1368 struct iscsi_param_list *param_list)
1370 struct iscsi_param *param;
1372 * Key name length must not exceed 63 bytes. (See iSCSI v20 5.1)
1374 if (strlen(key) > KEY_MAXLEN) {
1375 pr_err("Length of key name \"%s\" exceeds %d.\n",
1380 param = iscsi_find_param_from_key(key, param_list);
1384 if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1385 pr_err("Key \"%s\" may not be sent to %s,"
1386 " protocol error.\n", param->name,
1387 (sender & SENDER_RECEIVER) ? "target" : "initiator");
1390 if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1391 pr_err("Key \"%s\" may not be sent to %s,"
1392 " protocol error.\n", param->name,
1393 (sender & SENDER_RECEIVER) ? "initiator" : "target");
1397 if (IS_PSTATE_ACCEPTOR(param)) {
1398 pr_err("Key \"%s\" received twice, protocol error.\n",
1406 if (!(param->phase & phase)) {
1407 pr_err("Key \"%s\" may not be negotiated during ",
1410 case PHASE_SECURITY:
1411 pr_debug("Security phase.\n");
1413 case PHASE_OPERATIONAL:
1414 pr_debug("Operational phase.\n");
1416 pr_debug("Unknown phase.\n");
1424 static int iscsi_enforce_integrity_rules(
1426 struct iscsi_param_list *param_list)
1429 u8 DataSequenceInOrder = 0;
1430 u8 ErrorRecoveryLevel = 0, SessionType = 0;
1431 u8 IFMarker = 0, OFMarker = 0;
1432 u8 IFMarkInt_Reject = 1, OFMarkInt_Reject = 1;
1433 u32 FirstBurstLength = 0, MaxBurstLength = 0;
1434 struct iscsi_param *param = NULL;
1436 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1437 if (!(param->phase & phase))
1439 if (!strcmp(param->name, SESSIONTYPE))
1440 if (!strcmp(param->value, NORMAL))
1442 if (!strcmp(param->name, ERRORRECOVERYLEVEL))
1443 ErrorRecoveryLevel = simple_strtoul(param->value,
1445 if (!strcmp(param->name, DATASEQUENCEINORDER))
1446 if (!strcmp(param->value, YES))
1447 DataSequenceInOrder = 1;
1448 if (!strcmp(param->name, MAXBURSTLENGTH))
1449 MaxBurstLength = simple_strtoul(param->value,
1451 if (!strcmp(param->name, IFMARKER))
1452 if (!strcmp(param->value, YES))
1454 if (!strcmp(param->name, OFMARKER))
1455 if (!strcmp(param->value, YES))
1457 if (!strcmp(param->name, IFMARKINT))
1458 if (!strcmp(param->value, REJECT))
1459 IFMarkInt_Reject = 1;
1460 if (!strcmp(param->name, OFMARKINT))
1461 if (!strcmp(param->value, REJECT))
1462 OFMarkInt_Reject = 1;
1465 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1466 if (!(param->phase & phase))
1468 if (!SessionType && (!IS_PSTATE_ACCEPTOR(param) &&
1469 (strcmp(param->name, IFMARKER) &&
1470 strcmp(param->name, OFMARKER) &&
1471 strcmp(param->name, IFMARKINT) &&
1472 strcmp(param->name, OFMARKINT))))
1474 if (!strcmp(param->name, MAXOUTSTANDINGR2T) &&
1475 DataSequenceInOrder && (ErrorRecoveryLevel > 0)) {
1476 if (strcmp(param->value, "1")) {
1477 if (iscsi_update_param_value(param, "1") < 0)
1479 pr_debug("Reset \"%s\" to \"%s\".\n",
1480 param->name, param->value);
1483 if (!strcmp(param->name, MAXCONNECTIONS) && !SessionType) {
1484 if (strcmp(param->value, "1")) {
1485 if (iscsi_update_param_value(param, "1") < 0)
1487 pr_debug("Reset \"%s\" to \"%s\".\n",
1488 param->name, param->value);
1491 if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1492 FirstBurstLength = simple_strtoul(param->value,
1494 if (FirstBurstLength > MaxBurstLength) {
1496 memset(tmpbuf, 0, 10);
1497 sprintf(tmpbuf, "%u", MaxBurstLength);
1498 if (iscsi_update_param_value(param, tmpbuf))
1500 pr_debug("Reset \"%s\" to \"%s\".\n",
1501 param->name, param->value);
1504 if (!strcmp(param->name, IFMARKER) && IFMarkInt_Reject) {
1505 if (iscsi_update_param_value(param, NO) < 0)
1508 pr_debug("Reset \"%s\" to \"%s\".\n",
1509 param->name, param->value);
1511 if (!strcmp(param->name, OFMARKER) && OFMarkInt_Reject) {
1512 if (iscsi_update_param_value(param, NO) < 0)
1515 pr_debug("Reset \"%s\" to \"%s\".\n",
1516 param->name, param->value);
1518 if (!strcmp(param->name, IFMARKINT) && !IFMarker) {
1519 if (!strcmp(param->value, REJECT))
1521 param->state &= ~PSTATE_NEGOTIATE;
1522 if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1524 pr_debug("Reset \"%s\" to \"%s\".\n",
1525 param->name, param->value);
1527 if (!strcmp(param->name, OFMARKINT) && !OFMarker) {
1528 if (!strcmp(param->value, REJECT))
1530 param->state &= ~PSTATE_NEGOTIATE;
1531 if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1533 pr_debug("Reset \"%s\" to \"%s\".\n",
1534 param->name, param->value);
1541 int iscsi_decode_text_input(
1546 struct iscsi_param_list *param_list)
1548 char *tmpbuf, *start = NULL, *end = NULL;
1550 tmpbuf = kzalloc(length + 1, GFP_KERNEL);
1552 pr_err("Unable to allocate memory for tmpbuf.\n");
1556 memcpy(tmpbuf, textbuf, length);
1557 tmpbuf[length] = '\0';
1559 end = (start + length);
1561 while (start < end) {
1563 struct iscsi_param *param;
1565 if (iscsi_extract_key_value(start, &key, &value) < 0) {
1570 pr_debug("Got key: %s=%s\n", key, value);
1572 if (phase & PHASE_SECURITY) {
1573 if (iscsi_check_for_auth_key(key) > 0) {
1574 char *tmpptr = key + strlen(key);
1581 param = iscsi_check_key(key, phase, sender, param_list);
1583 if (iscsi_add_notunderstood_response(key,
1584 value, param_list) < 0) {
1588 start += strlen(key) + strlen(value) + 2;
1591 if (iscsi_check_value(param, value) < 0) {
1596 start += strlen(key) + strlen(value) + 2;
1598 if (IS_PSTATE_PROPOSER(param)) {
1599 if (iscsi_check_proposer_state(param, value) < 0) {
1603 SET_PSTATE_RESPONSE_GOT(param);
1605 if (iscsi_check_acceptor_state(param, value) < 0) {
1609 SET_PSTATE_ACCEPTOR(param);
1617 int iscsi_encode_text_output(
1622 struct iscsi_param_list *param_list)
1624 char *output_buf = NULL;
1625 struct iscsi_extra_response *er;
1626 struct iscsi_param *param;
1628 output_buf = textbuf + *length;
1630 if (iscsi_enforce_integrity_rules(phase, param_list) < 0)
1633 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1634 if (!(param->sender & sender))
1636 if (IS_PSTATE_ACCEPTOR(param) &&
1637 !IS_PSTATE_RESPONSE_SENT(param) &&
1638 !IS_PSTATE_REPLY_OPTIONAL(param) &&
1639 (param->phase & phase)) {
1640 *length += sprintf(output_buf, "%s=%s",
1641 param->name, param->value);
1643 output_buf = textbuf + *length;
1644 SET_PSTATE_RESPONSE_SENT(param);
1645 pr_debug("Sending key: %s=%s\n",
1646 param->name, param->value);
1649 if (IS_PSTATE_NEGOTIATE(param) &&
1650 !IS_PSTATE_ACCEPTOR(param) &&
1651 !IS_PSTATE_PROPOSER(param) &&
1652 (param->phase & phase)) {
1653 *length += sprintf(output_buf, "%s=%s",
1654 param->name, param->value);
1656 output_buf = textbuf + *length;
1657 SET_PSTATE_PROPOSER(param);
1658 iscsi_check_proposer_for_optional_reply(param);
1659 pr_debug("Sending key: %s=%s\n",
1660 param->name, param->value);
1664 list_for_each_entry(er, ¶m_list->extra_response_list, er_list) {
1665 *length += sprintf(output_buf, "%s=%s", er->key, er->value);
1667 output_buf = textbuf + *length;
1668 pr_debug("Sending key: %s=%s\n", er->key, er->value);
1670 iscsi_release_extra_responses(param_list);
1675 int iscsi_check_negotiated_keys(struct iscsi_param_list *param_list)
1678 struct iscsi_param *param;
1680 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1681 if (IS_PSTATE_NEGOTIATE(param) &&
1682 IS_PSTATE_PROPOSER(param) &&
1683 !IS_PSTATE_RESPONSE_GOT(param) &&
1684 !IS_PSTATE_REPLY_OPTIONAL(param) &&
1685 !IS_PHASE_DECLARATIVE(param)) {
1686 pr_err("No response for proposed key \"%s\".\n",
1695 int iscsi_change_param_value(
1697 struct iscsi_param_list *param_list,
1700 char *key = NULL, *value = NULL;
1701 struct iscsi_param *param;
1704 if (iscsi_extract_key_value(keyvalue, &key, &value) < 0)
1708 param = __iscsi_check_key(keyvalue, sender, param_list);
1712 param = iscsi_check_key(keyvalue, 0, sender, param_list);
1716 param->set_param = 1;
1717 if (iscsi_check_value(param, value) < 0) {
1718 param->set_param = 0;
1721 param->set_param = 0;
1724 if (iscsi_update_param_value(param, value) < 0)
1730 void iscsi_set_connection_parameters(
1731 struct iscsi_conn_ops *ops,
1732 struct iscsi_param_list *param_list)
1735 struct iscsi_param *param;
1737 pr_debug("---------------------------------------------------"
1738 "---------------\n");
1739 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1740 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1742 if (!strcmp(param->name, AUTHMETHOD)) {
1743 pr_debug("AuthMethod: %s\n",
1745 } else if (!strcmp(param->name, HEADERDIGEST)) {
1746 ops->HeaderDigest = !strcmp(param->value, CRC32C);
1747 pr_debug("HeaderDigest: %s\n",
1749 } else if (!strcmp(param->name, DATADIGEST)) {
1750 ops->DataDigest = !strcmp(param->value, CRC32C);
1751 pr_debug("DataDigest: %s\n",
1753 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1754 ops->MaxRecvDataSegmentLength =
1755 simple_strtoul(param->value, &tmpptr, 0);
1756 pr_debug("MaxRecvDataSegmentLength: %s\n",
1758 } else if (!strcmp(param->name, OFMARKER)) {
1759 ops->OFMarker = !strcmp(param->value, YES);
1760 pr_debug("OFMarker: %s\n",
1762 } else if (!strcmp(param->name, IFMARKER)) {
1763 ops->IFMarker = !strcmp(param->value, YES);
1764 pr_debug("IFMarker: %s\n",
1766 } else if (!strcmp(param->name, OFMARKINT)) {
1768 simple_strtoul(param->value, &tmpptr, 0);
1769 pr_debug("OFMarkInt: %s\n",
1771 } else if (!strcmp(param->name, IFMARKINT)) {
1773 simple_strtoul(param->value, &tmpptr, 0);
1774 pr_debug("IFMarkInt: %s\n",
1778 pr_debug("----------------------------------------------------"
1779 "--------------\n");
1782 void iscsi_set_session_parameters(
1783 struct iscsi_sess_ops *ops,
1784 struct iscsi_param_list *param_list,
1788 struct iscsi_param *param;
1790 pr_debug("----------------------------------------------------"
1791 "--------------\n");
1792 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1793 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1795 if (!strcmp(param->name, INITIATORNAME)) {
1799 snprintf(ops->InitiatorName,
1800 sizeof(ops->InitiatorName),
1801 "%s", param->value);
1802 pr_debug("InitiatorName: %s\n",
1804 } else if (!strcmp(param->name, INITIATORALIAS)) {
1807 snprintf(ops->InitiatorAlias,
1808 sizeof(ops->InitiatorAlias),
1809 "%s", param->value);
1810 pr_debug("InitiatorAlias: %s\n",
1812 } else if (!strcmp(param->name, TARGETNAME)) {
1816 snprintf(ops->TargetName,
1817 sizeof(ops->TargetName),
1818 "%s", param->value);
1819 pr_debug("TargetName: %s\n",
1821 } else if (!strcmp(param->name, TARGETALIAS)) {
1824 snprintf(ops->TargetAlias, sizeof(ops->TargetAlias),
1825 "%s", param->value);
1826 pr_debug("TargetAlias: %s\n",
1828 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
1829 ops->TargetPortalGroupTag =
1830 simple_strtoul(param->value, &tmpptr, 0);
1831 pr_debug("TargetPortalGroupTag: %s\n",
1833 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
1834 ops->MaxConnections =
1835 simple_strtoul(param->value, &tmpptr, 0);
1836 pr_debug("MaxConnections: %s\n",
1838 } else if (!strcmp(param->name, INITIALR2T)) {
1839 ops->InitialR2T = !strcmp(param->value, YES);
1840 pr_debug("InitialR2T: %s\n",
1842 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
1843 ops->ImmediateData = !strcmp(param->value, YES);
1844 pr_debug("ImmediateData: %s\n",
1846 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
1847 ops->MaxBurstLength =
1848 simple_strtoul(param->value, &tmpptr, 0);
1849 pr_debug("MaxBurstLength: %s\n",
1851 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1852 ops->FirstBurstLength =
1853 simple_strtoul(param->value, &tmpptr, 0);
1854 pr_debug("FirstBurstLength: %s\n",
1856 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1857 ops->DefaultTime2Wait =
1858 simple_strtoul(param->value, &tmpptr, 0);
1859 pr_debug("DefaultTime2Wait: %s\n",
1861 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
1862 ops->DefaultTime2Retain =
1863 simple_strtoul(param->value, &tmpptr, 0);
1864 pr_debug("DefaultTime2Retain: %s\n",
1866 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
1867 ops->MaxOutstandingR2T =
1868 simple_strtoul(param->value, &tmpptr, 0);
1869 pr_debug("MaxOutstandingR2T: %s\n",
1871 } else if (!strcmp(param->name, DATAPDUINORDER)) {
1872 ops->DataPDUInOrder = !strcmp(param->value, YES);
1873 pr_debug("DataPDUInOrder: %s\n",
1875 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
1876 ops->DataSequenceInOrder = !strcmp(param->value, YES);
1877 pr_debug("DataSequenceInOrder: %s\n",
1879 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
1880 ops->ErrorRecoveryLevel =
1881 simple_strtoul(param->value, &tmpptr, 0);
1882 pr_debug("ErrorRecoveryLevel: %s\n",
1884 } else if (!strcmp(param->name, SESSIONTYPE)) {
1885 ops->SessionType = !strcmp(param->value, DISCOVERY);
1886 pr_debug("SessionType: %s\n",
1890 pr_debug("----------------------------------------------------"
1891 "--------------\n");