drivers/target/iscsi/iscsi_target_parameters.c

   1 /*******************************************************************************
   2  * This file contains main functions related to iSCSI Parameter negotiation.
   3  *
   4  * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
   5  *
   6  * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
   7  *
   8  * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
   9  *
  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.
  14  *
  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  ******************************************************************************/
  20
  21 #include <linux/slab.h>
  22
  23 #include "iscsi_target_core.h"
  24 #include "iscsi_target_util.h"
  25 #include "iscsi_target_parameters.h"
  26
  27 int iscsi_login_rx_data(
  28         struct iscsi_conn *conn,
  29         char *buf,
  30         int length)
  31 {
  32         int rx_got;
  33         struct kvec iov;
  34
  35         memset(&iov, 0, sizeof(struct kvec));
  36         iov.iov_len     = length;
  37         iov.iov_base    = buf;
  38
  39         /*
  40          * Initial Marker-less Interval.
  41          * Add the values regardless of IFMarker/OFMarker, considering
  42          * it may not be negoitated yet.
  43          */
  44         conn->of_marker += length;
  45
  46         rx_got = rx_data(conn, &iov, 1, length);
  47         if (rx_got != length) {
  48                 pr_err("rx_data returned %d, expecting %d.\n",
  49                                 rx_got, length);
  50                 return -1;
  51         }
  52
  53         return 0 ;
  54 }
  55
  56 int iscsi_login_tx_data(
  57         struct iscsi_conn *conn,
  58         char *pdu_buf,
  59         char *text_buf,
  60         int text_length)
  61 {
  62         int length, tx_sent;
  63         struct kvec iov[2];
  64
  65         length = (ISCSI_HDR_LEN + text_length);
  66
  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;
  72
  73         /*
  74          * Initial Marker-less Interval.
  75          * Add the values regardless of IFMarker/OFMarker, considering
  76          * it may not be negoitated yet.
  77          */
  78         conn->if_marker += length;
  79
  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",
  83                                 tx_sent, length);
  84                 return -1;
  85         }
  86
  87         return 0;
  88 }
  89
  90 void iscsi_dump_conn_ops(struct iscsi_conn_ops *conn_ops)
  91 {
  92         pr_debug("HeaderDigest: %s\n", (conn_ops->HeaderDigest) ?
  93                                 "CRC32C" : "None");
  94         pr_debug("DataDigest: %s\n", (conn_ops->DataDigest) ?
  95                                 "CRC32C" : "None");
  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);
 104 }
 105
 106 void iscsi_dump_sess_ops(struct iscsi_sess_ops *sess_ops)
 107 {
 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) ?
 118                         "Yes" : "No");
 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");
 134 }
 135
 136 void iscsi_print_params(struct iscsi_param_list *param_list)
 137 {
 138         struct iscsi_param *param;
 139
 140         list_for_each_entry(param, &param_list->param_list, p_list)
 141                 pr_debug("%s: %s\n", param->name, param->value);
 142 }
 143
 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)
 147 {
 148         struct iscsi_param *param = NULL;
 149
 150         param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL);
 151         if (!param) {
 152                 pr_err("Unable to allocate memory for parameter.\n");
 153                 goto out;
 154         }
 155         INIT_LIST_HEAD(&param->p_list);
 156
 157         param->name = kzalloc(strlen(name) + 1, GFP_KERNEL);
 158         if (!param->name) {
 159                 pr_err("Unable to allocate memory for parameter name.\n");
 160                 goto out;
 161         }
 162
 163         param->value = kzalloc(strlen(value) + 1, GFP_KERNEL);
 164         if (!param->value) {
 165                 pr_err("Unable to allocate memory for parameter value.\n");
 166                 goto out;
 167         }
 168
 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;
 176         param->use              = use;
 177         param->type_range       = type_range;
 178
 179         switch (param->type_range) {
 180         case TYPERANGE_BOOL_AND:
 181                 param->type = TYPE_BOOL_AND;
 182                 break;
 183         case TYPERANGE_BOOL_OR:
 184                 param->type = TYPE_BOOL_OR;
 185                 break;
 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;
 194                 break;
 195         case TYPERANGE_AUTH:
 196         case TYPERANGE_DIGEST:
 197                 param->type = TYPE_VALUE_LIST | TYPE_STRING;
 198                 break;
 199         case TYPERANGE_MARKINT:
 200                 param->type = TYPE_NUMBER_RANGE;
 201                 param->type_range |= TYPERANGE_1_TO_65535;
 202                 break;
 203         case TYPERANGE_ISCSINAME:
 204         case TYPERANGE_SESSIONTYPE:
 205         case TYPERANGE_TARGETADDRESS:
 206         case TYPERANGE_UTF8:
 207                 param->type = TYPE_STRING;
 208                 break;
 209         default:
 210                 pr_err("Unknown type_range 0x%02x\n",
 211                                 param->type_range);
 212                 goto out;
 213         }
 214         list_add_tail(&param->p_list, &param_list->param_list);
 215
 216         return param;
 217 out:
 218         if (param) {
 219                 kfree(param->value);
 220                 kfree(param->name);
 221                 kfree(param);
 222         }
 223
 224         return NULL;
 225 }
 226
 227 /* #warning Add extension keys */
 228 int iscsi_create_default_params(struct iscsi_param_list **param_list_ptr)
 229 {
 230         struct iscsi_param *param = NULL;
 231         struct iscsi_param_list *pl;
 232
 233         pl = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL);
 234         if (!pl) {
 235                 pr_err("Unable to allocate memory for"
 236                                 " struct iscsi_param_list.\n");
 237                 return -1 ;
 238         }
 239         INIT_LIST_HEAD(&pl->param_list);
 240         INIT_LIST_HEAD(&pl->extra_response_list);
 241
 242         /*
 243          * The format for setting the initial parameter definitions are:
 244          *
 245          * Parameter name:
 246          * Initial value:
 247          * Allowable phase:
 248          * Scope:
 249          * Allowable senders:
 250          * Typerange:
 251          * Use:
 252          */
 253         param = iscsi_set_default_param(pl, AUTHMETHOD, INITIAL_AUTHMETHOD,
 254                         PHASE_SECURITY, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 255                         TYPERANGE_AUTH, USE_INITIAL_ONLY);
 256         if (!param)
 257                 goto out;
 258
 259         param = iscsi_set_default_param(pl, HEADERDIGEST, INITIAL_HEADERDIGEST,
 260                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 261                         TYPERANGE_DIGEST, USE_INITIAL_ONLY);
 262         if (!param)
 263                 goto out;
 264
 265         param = iscsi_set_default_param(pl, DATADIGEST, INITIAL_DATADIGEST,
 266                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 267                         TYPERANGE_DIGEST, USE_INITIAL_ONLY);
 268         if (!param)
 269                 goto out;
 270
 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);
 275         if (!param)
 276                 goto out;
 277
 278         param = iscsi_set_default_param(pl, SENDTARGETS, INITIAL_SENDTARGETS,
 279                         PHASE_FFP0, SCOPE_SESSION_WIDE, SENDER_INITIATOR,
 280                         TYPERANGE_UTF8, 0);
 281         if (!param)
 282                 goto out;
 283
 284         param = iscsi_set_default_param(pl, TARGETNAME, INITIAL_TARGETNAME,
 285                         PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_BOTH,
 286                         TYPERANGE_ISCSINAME, USE_ALL);
 287         if (!param)
 288                 goto out;
 289
 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);
 294         if (!param)
 295                 goto out;
 296
 297         param = iscsi_set_default_param(pl, TARGETALIAS, INITIAL_TARGETALIAS,
 298                         PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_TARGET,
 299                         TYPERANGE_UTF8, USE_ALL);
 300         if (!param)
 301                 goto out;
 302
 303         param = iscsi_set_default_param(pl, INITIATORALIAS,
 304                         INITIAL_INITIATORALIAS, PHASE_DECLARATIVE,
 305                         SCOPE_SESSION_WIDE, SENDER_INITIATOR, TYPERANGE_UTF8,
 306                         USE_ALL);
 307         if (!param)
 308                 goto out;
 309
 310         param = iscsi_set_default_param(pl, TARGETADDRESS,
 311                         INITIAL_TARGETADDRESS, PHASE_DECLARATIVE,
 312                         SCOPE_SESSION_WIDE, SENDER_TARGET,
 313                         TYPERANGE_TARGETADDRESS, USE_ALL);
 314         if (!param)
 315                 goto out;
 316
 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);
 321         if (!param)
 322                 goto out;
 323
 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);
 327         if (!param)
 328                 goto out;
 329
 330         param = iscsi_set_default_param(pl, IMMEDIATEDATA,
 331                         INITIAL_IMMEDIATEDATA, PHASE_OPERATIONAL,
 332                         SCOPE_SESSION_WIDE, SENDER_BOTH, TYPERANGE_BOOL_AND,
 333                         USE_LEADING_ONLY);
 334         if (!param)
 335                 goto out;
 336
 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);
 341         if (!param)
 342                 goto out;
 343
 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);
 348         if (!param)
 349                 goto out;
 350
 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);
 355         if (!param)
 356                 goto out;
 357
 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);
 362         if (!param)
 363                 goto out;
 364
 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);
 369         if (!param)
 370                 goto out;
 371
 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);
 376         if (!param)
 377                 goto out;
 378
 379         param = iscsi_set_default_param(pl, DATAPDUINORDER,
 380                         INITIAL_DATAPDUINORDER, PHASE_OPERATIONAL,
 381                         SCOPE_SESSION_WIDE, SENDER_BOTH, TYPERANGE_BOOL_OR,
 382                         USE_LEADING_ONLY);
 383         if (!param)
 384                 goto out;
 385
 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);
 390         if (!param)
 391                 goto out;
 392
 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);
 397         if (!param)
 398                 goto out;
 399
 400         param = iscsi_set_default_param(pl, SESSIONTYPE, INITIAL_SESSIONTYPE,
 401                         PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_INITIATOR,
 402                         TYPERANGE_SESSIONTYPE, USE_LEADING_ONLY);
 403         if (!param)
 404                 goto out;
 405
 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);
 409         if (!param)
 410                 goto out;
 411
 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);
 415         if (!param)
 416                 goto out;
 417
 418         param = iscsi_set_default_param(pl, IFMARKINT, INITIAL_IFMARKINT,
 419                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 420                         TYPERANGE_MARKINT, USE_INITIAL_ONLY);
 421         if (!param)
 422                 goto out;
 423
 424         param = iscsi_set_default_param(pl, OFMARKINT, INITIAL_OFMARKINT,
 425                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 426                         TYPERANGE_MARKINT, USE_INITIAL_ONLY);
 427         if (!param)
 428                 goto out;
 429
 430         *param_list_ptr = pl;
 431         return 0;
 432 out:
 433         iscsi_release_param_list(pl);
 434         return -1;
 435 }
 436
 437 int iscsi_set_keys_to_negotiate(
 438         int sessiontype,
 439         struct iscsi_param_list *param_list)
 440 {
 441         struct iscsi_param *param;
 442
 443         list_for_each_entry(param, &param_list->param_list, p_list) {
 444                 param->state = 0;
 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)) {
 454                         continue;
 455                 } else if (!strcmp(param->name, INITIATORNAME)) {
 456                         continue;
 457                 } else if (!strcmp(param->name, TARGETALIAS)) {
 458                         if (param->value)
 459                                 SET_PSTATE_NEGOTIATE(param);
 460                 } else if (!strcmp(param->name, INITIATORALIAS)) {
 461                         continue;
 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);
 496                 }
 497         }
 498
 499         return 0;
 500 }
 501
 502 int iscsi_set_keys_irrelevant_for_discovery(
 503         struct iscsi_param_list *param_list)
 504 {
 505         struct iscsi_param *param;
 506
 507         list_for_each_entry(param, &param_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;
 538         }
 539
 540         return 0;
 541 }
 542
 543 int iscsi_copy_param_list(
 544         struct iscsi_param_list **dst_param_list,
 545         struct iscsi_param_list *src_param_list,
 546         int leading)
 547 {
 548         struct iscsi_param *param = NULL;
 549         struct iscsi_param *new_param = NULL;
 550         struct iscsi_param_list *param_list = NULL;
 551
 552         param_list = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL);
 553         if (!param_list) {
 554                 pr_err("Unable to allocate memory for struct iscsi_param_list.\n");
 555                 goto err_out;
 556         }
 557         INIT_LIST_HEAD(&param_list->param_list);
 558         INIT_LIST_HEAD(&param_list->extra_response_list);
 559
 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))
 565                                 continue;
 566                 }
 567
 568                 new_param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL);
 569                 if (!new_param) {
 570                         pr_err("Unable to allocate memory for struct iscsi_param.\n");
 571                         goto err_out;
 572                 }
 573
 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);
 579                         kfree(new_param);
 580                         pr_err("Unable to allocate memory for parameter name/value.\n");
 581                         goto err_out;
 582                 }
 583
 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;
 591
 592                 list_add_tail(&new_param->p_list, &param_list->param_list);
 593         }
 594
 595         if (!list_empty(&param_list->param_list)) {
 596                 *dst_param_list = param_list;
 597         } else {
 598                 pr_err("No parameters allocated.\n");
 599                 goto err_out;
 600         }
 601
 602         return 0;
 603
 604 err_out:
 605         iscsi_release_param_list(param_list);
 606         return -1;
 607 }
 608
 609 static void iscsi_release_extra_responses(struct iscsi_param_list *param_list)
 610 {
 611         struct iscsi_extra_response *er, *er_tmp;
 612
 613         list_for_each_entry_safe(er, er_tmp, &param_list->extra_response_list,
 614                         er_list) {
 615                 list_del(&er->er_list);
 616                 kfree(er);
 617         }
 618 }
 619
 620 void iscsi_release_param_list(struct iscsi_param_list *param_list)
 621 {
 622         struct iscsi_param *param, *param_tmp;
 623
 624         list_for_each_entry_safe(param, param_tmp, &param_list->param_list,
 625                         p_list) {
 626                 list_del(&param->p_list);
 627
 628                 kfree(param->name);
 629                 param->name = NULL;
 630                 kfree(param->value);
 631                 param->value = NULL;
 632                 kfree(param);
 633                 param = NULL;
 634         }
 635
 636         iscsi_release_extra_responses(param_list);
 637
 638         kfree(param_list);
 639 }
 640
 641 struct iscsi_param *iscsi_find_param_from_key(
 642         char *key,
 643         struct iscsi_param_list *param_list)
 644 {
 645         struct iscsi_param *param;
 646
 647         if (!key || !param_list) {
 648                 pr_err("Key or parameter list pointer is NULL.\n");
 649                 return NULL;
 650         }
 651
 652         list_for_each_entry(param, &param_list->param_list, p_list) {
 653                 if (!strcmp(key, param->name))
 654                         return param;
 655         }
 656
 657         pr_err("Unable to locate key \"%s\".\n", key);
 658         return NULL;
 659 }
 660
 661 int iscsi_extract_key_value(char *textbuf, char **key, char **value)
 662 {
 663         *value = strchr(textbuf, '=');
 664         if (!*value) {
 665                 pr_err("Unable to locate \"=\" seperator for key,"
 666                                 " ignoring request.\n");
 667                 return -1;
 668         }
 669
 670         *key = textbuf;
 671         **value = '\0';
 672         *value = *value + 1;
 673
 674         return 0;
 675 }
 676
 677 int iscsi_update_param_value(struct iscsi_param *param, char *value)
 678 {
 679         kfree(param->value);
 680
 681         param->value = kzalloc(strlen(value) + 1, GFP_KERNEL);
 682         if (!param->value) {
 683                 pr_err("Unable to allocate memory for value.\n");
 684                 return -1;
 685         }
 686
 687         memcpy(param->value, value, strlen(value));
 688         param->value[strlen(value)] = '\0';
 689
 690         pr_debug("iSCSI Parameter updated to %s=%s\n",
 691                         param->name, param->value);
 692         return 0;
 693 }
 694
 695 static int iscsi_add_notunderstood_response(
 696         char *key,
 697         char *value,
 698         struct iscsi_param_list *param_list)
 699 {
 700         struct iscsi_extra_response *extra_response;
 701
 702         if (strlen(value) > VALUE_MAXLEN) {
 703                 pr_err("Value for notunderstood key \"%s\" exceeds %d,"
 704                         " protocol error.\n", key, VALUE_MAXLEN);
 705                 return -1;
 706         }
 707
 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");
 712                 return -1;
 713         }
 714         INIT_LIST_HEAD(&extra_response->er_list);
 715
 716         strncpy(extra_response->key, key, strlen(key) + 1);
 717         strncpy(extra_response->value, NOTUNDERSTOOD,
 718                         strlen(NOTUNDERSTOOD) + 1);
 719
 720         list_add_tail(&extra_response->er_list,
 721                         &param_list->extra_response_list);
 722         return 0;
 723 }
 724
 725 static int iscsi_check_for_auth_key(char *key)
 726 {
 727         /*
 728          * RFC 1994
 729          */
 730         if (!strcmp(key, "CHAP_A") || !strcmp(key, "CHAP_I") ||
 731             !strcmp(key, "CHAP_C") || !strcmp(key, "CHAP_N") ||
 732             !strcmp(key, "CHAP_R"))
 733                 return 1;
 734
 735         /*
 736          * RFC 2945
 737          */
 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"))
 742                 return 1;
 743
 744         return 0;
 745 }
 746
 747 static void iscsi_check_proposer_for_optional_reply(struct iscsi_param *param)
 748 {
 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);
 755                  /*
 756                   * Required for gPXE iSCSI boot client
 757                   */
 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);
 763                 /*
 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.
 770                  */
 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);
 779                 /*
 780                  * Required for gPXE iSCSI boot client
 781                  */
 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);
 786 }
 787
 788 static int iscsi_check_boolean_value(struct iscsi_param *param, char *value)
 789 {
 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);
 793                 return -1;
 794         }
 795
 796         return 0;
 797 }
 798
 799 static int iscsi_check_numerical_value(struct iscsi_param *param, char *value_ptr)
 800 {
 801         char *tmpptr;
 802         int value = 0;
 803
 804         value = simple_strtoul(value_ptr, &tmpptr, 0);
 805
 806 /* #warning FIXME: Fix this */
 807 #if 0
 808         if (strspn(endptr, WHITE_SPACE) != strlen(endptr)) {
 809                 pr_err("Illegal value \"%s\" for \"%s\".\n",
 810                         value, param->name);
 811                 return -1;
 812         }
 813 #endif
 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);
 818                         return -1;
 819                 }
 820                 return 0;
 821         }
 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);
 826                         return -1;
 827                 }
 828                 return 0;
 829         }
 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);
 834                         return -1;
 835                 }
 836                 return 0;
 837         }
 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);
 842                         return -1;
 843                 }
 844                 return 0;
 845         }
 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);
 850                         return -1;
 851                 }
 852                 return 0;
 853         }
 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);
 858                         return -1;
 859                 }
 860                 return 0;
 861         }
 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);
 866                         return -1;
 867                 }
 868                 return 0;
 869         }
 870
 871         return 0;
 872 }
 873
 874 static int iscsi_check_numerical_range_value(struct iscsi_param *param, char *value)
 875 {
 876         char *left_val_ptr = NULL, *right_val_ptr = NULL;
 877         char *tilde_ptr = NULL;
 878         u32 left_val, right_val, local_left_val;
 879
 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);
 884                 return -1;
 885         }
 886
 887         if (IS_PSTATE_PROPOSER(param))
 888                 return 0;
 889
 890         tilde_ptr = strchr(value, '~');
 891         if (!tilde_ptr) {
 892                 pr_err("Unable to locate numerical range indicator"
 893                         " \"~\" for \"%s\".\n", param->name);
 894                 return -1;
 895         }
 896         *tilde_ptr = '\0';
 897
 898         left_val_ptr = value;
 899         right_val_ptr = value + strlen(left_val_ptr) + 1;
 900
 901         if (iscsi_check_numerical_value(param, left_val_ptr) < 0)
 902                 return -1;
 903         if (iscsi_check_numerical_value(param, right_val_ptr) < 0)
 904                 return -1;
 905
 906         left_val = simple_strtoul(left_val_ptr, NULL, 0);
 907         right_val = simple_strtoul(right_val_ptr, NULL, 0);
 908         *tilde_ptr = '~';
 909
 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",
 913                                 param->name);
 914                 return -1;
 915         }
 916
 917         /*
 918          * For now,  enforce reasonable defaults for [I,O]FMarkInt.
 919          */
 920         tilde_ptr = strchr(param->value, '~');
 921         if (!tilde_ptr) {
 922                 pr_err("Unable to locate numerical range indicator"
 923                         " \"~\" for \"%s\".\n", param->name);
 924                 return -1;
 925         }
 926         *tilde_ptr = '\0';
 927
 928         left_val_ptr = param->value;
 929         right_val_ptr = param->value + strlen(left_val_ptr) + 1;
 930
 931         local_left_val = simple_strtoul(left_val_ptr, NULL, 0);
 932         *tilde_ptr = '~';
 933
 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);
 941                         return -1;
 942                 }
 943         } else {
 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)
 952                                 return -1;
 953                 }
 954         }
 955
 956         return 0;
 957 }
 958
 959 static int iscsi_check_string_or_list_value(struct iscsi_param *param, char *value)
 960 {
 961         if (IS_PSTATE_PROPOSER(param))
 962                 return 0;
 963
 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);
 972                         return -1;
 973                 }
 974         }
 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,
 979                                         CRC32C, NONE);
 980                         return -1;
 981                 }
 982         }
 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,
 987                                         DISCOVERY, NORMAL);
 988                         return -1;
 989                 }
 990         }
 991
 992         return 0;
 993 }
 994
 995 /*
 996  *      This function is used to pick a value range number,  currently just
 997  *      returns the lesser of both right values.
 998  */
 999 static char *iscsi_get_value_from_number_range(
1000         struct iscsi_param *param,
1001         char *value)
1002 {
1003         char *end_ptr, *tilde_ptr1 = NULL, *tilde_ptr2 = NULL;
1004         u32 acceptor_right_value, proposer_right_value;
1005
1006         tilde_ptr1 = strchr(value, '~');
1007         if (!tilde_ptr1)
1008                 return NULL;
1009         *tilde_ptr1++ = '\0';
1010         proposer_right_value = simple_strtoul(tilde_ptr1, &end_ptr, 0);
1011
1012         tilde_ptr2 = strchr(param->value, '~');
1013         if (!tilde_ptr2)
1014                 return NULL;
1015         *tilde_ptr2++ = '\0';
1016         acceptor_right_value = simple_strtoul(tilde_ptr2, &end_ptr, 0);
1017
1018         return (acceptor_right_value >= proposer_right_value) ?
1019                 tilde_ptr1 : tilde_ptr2;
1020 }
1021
1022 static char *iscsi_check_valuelist_for_support(
1023         struct iscsi_param *param,
1024         char *value)
1025 {
1026         char *tmp1 = NULL, *tmp2 = NULL;
1027         char *acceptor_values = NULL, *proposer_values = NULL;
1028
1029         acceptor_values = param->value;
1030         proposer_values = value;
1031
1032         do {
1033                 if (!proposer_values)
1034                         return NULL;
1035                 tmp1 = strchr(proposer_values, ',');
1036                 if (tmp1)
1037                         *tmp1 = '\0';
1038                 acceptor_values = param->value;
1039                 do {
1040                         if (!acceptor_values) {
1041                                 if (tmp1)
1042                                         *tmp1 = ',';
1043                                 return NULL;
1044                         }
1045                         tmp2 = strchr(acceptor_values, ',');
1046                         if (tmp2)
1047                                 *tmp2 = '\0';
1048                         if (!acceptor_values || !proposer_values) {
1049                                 if (tmp1)
1050                                         *tmp1 = ',';
1051                                 if (tmp2)
1052                                         *tmp2 = ',';
1053                                 return NULL;
1054                         }
1055                         if (!strcmp(acceptor_values, proposer_values)) {
1056                                 if (tmp2)
1057                                         *tmp2 = ',';
1058                                 goto out;
1059                         }
1060                         if (tmp2)
1061                                 *tmp2++ = ',';
1062
1063                         acceptor_values = tmp2;
1064                         if (!acceptor_values)
1065                                 break;
1066                 } while (acceptor_values);
1067                 if (tmp1)
1068                         *tmp1++ = ',';
1069                 proposer_values = tmp1;
1070         } while (proposer_values);
1071
1072 out:
1073         return proposer_values;
1074 }
1075
1076 static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value)
1077 {
1078         u8 acceptor_boolean_value = 0, proposer_boolean_value = 0;
1079         char *negoitated_value = NULL;
1080
1081         if (IS_PSTATE_ACCEPTOR(param)) {
1082                 pr_err("Received key \"%s\" twice, protocol error.\n",
1083                                 param->name);
1084                 return -1;
1085         }
1086
1087         if (IS_PSTATE_REJECT(param))
1088                 return 0;
1089
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)
1096                         do {} while (0);
1097                 else {
1098                         if (iscsi_update_param_value(param, NO) < 0)
1099                                 return -1;
1100                         if (!proposer_boolean_value)
1101                                 SET_PSTATE_REPLY_OPTIONAL(param);
1102                 }
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)
1110                                 return -1;
1111                         if (proposer_boolean_value)
1112                                 SET_PSTATE_REPLY_OPTIONAL(param);
1113                 }
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);
1118
1119                 memset(buf, 0, 10);
1120
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,
1130                                                 &buf[0]) < 0)
1131                                         return -1;
1132                         } else {
1133                                 if (iscsi_update_param_value(param, value) < 0)
1134                                         return -1;
1135                         }
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,
1140                                                 &buf[0]) < 0)
1141                                         return -1;
1142                         } else {
1143                                 if (iscsi_update_param_value(param, value) < 0)
1144                                         return -1;
1145                         }
1146                 } else {
1147                         if (iscsi_update_param_value(param, value) < 0)
1148                                 return -1;
1149                 }
1150
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(
1155                                         param, value);
1156                 if (!negoitated_value)
1157                         return -1;
1158                 if (iscsi_update_param_value(param, negoitated_value) < 0)
1159                         return -1;
1160         } else if (IS_TYPE_VALUE_LIST(param)) {
1161                 negoitated_value = iscsi_check_valuelist_for_support(
1162                                         param, value);
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);
1167                         return -1;
1168                 }
1169                 if (iscsi_update_param_value(param, negoitated_value) < 0)
1170                         return -1;
1171         } else if (IS_PHASE_DECLARATIVE(param)) {
1172                 if (iscsi_update_param_value(param, value) < 0)
1173                         return -1;
1174                 SET_PSTATE_REPLY_OPTIONAL(param);
1175         }
1176
1177         return 0;
1178 }
1179
1180 static int iscsi_check_proposer_state(struct iscsi_param *param, char *value)
1181 {
1182         if (IS_PSTATE_RESPONSE_GOT(param)) {
1183                 pr_err("Received key \"%s\" twice, protocol error.\n",
1184                                 param->name);
1185                 return -1;
1186         }
1187
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;
1192
1193                 if (!strcmp(value, IRRELEVANT) || !strcmp(value, REJECT)) {
1194                         if (iscsi_update_param_value(param, value) < 0)
1195                                 return -1;
1196                         return 0;
1197                 }
1198
1199                 tilde_ptr = strchr(value, '~');
1200                 if (tilde_ptr) {
1201                         pr_err("Illegal \"~\" in response for \"%s\".\n",
1202                                         param->name);
1203                         return -1;
1204                 }
1205                 tilde_ptr = strchr(param->value, '~');
1206                 if (!tilde_ptr) {
1207                         pr_err("Unable to locate numerical range"
1208                                 " indicator \"~\" for \"%s\".\n", param->name);
1209                         return -1;
1210                 }
1211                 *tilde_ptr = '\0';
1212
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);
1218
1219                 *tilde_ptr = '~';
1220
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);
1226                         return -1;
1227                 }
1228         } else if (IS_TYPE_VALUE_LIST(param)) {
1229                 char *comma_ptr = NULL, *tmp_ptr = NULL;
1230
1231                 comma_ptr = strchr(value, ',');
1232                 if (comma_ptr) {
1233                         pr_err("Illegal \",\" in response for \"%s\".\n",
1234                                         param->name);
1235                         return -1;
1236                 }
1237
1238                 tmp_ptr = iscsi_check_valuelist_for_support(param, value);
1239                 if (!tmp_ptr)
1240                         return -1;
1241         }
1242
1243         if (iscsi_update_param_value(param, value) < 0)
1244                 return -1;
1245
1246         return 0;
1247 }
1248
1249 static int iscsi_check_value(struct iscsi_param *param, char *value)
1250 {
1251         char *comma_ptr = NULL;
1252
1253         if (!strcmp(value, REJECT)) {
1254                 if (!strcmp(param->name, IFMARKINT) ||
1255                     !strcmp(param->name, OFMARKINT)) {
1256                         /*
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)
1259                          */
1260                         SET_PSTATE_REJECT(param);
1261                         return 0;
1262                 }
1263                 pr_err("Received %s=%s\n", param->name, value);
1264                 return -1;
1265         }
1266         if (!strcmp(value, IRRELEVANT)) {
1267                 pr_debug("Received %s=%s\n", param->name, value);
1268                 SET_PSTATE_IRRELEVANT(param);
1269                 return 0;
1270         }
1271         if (!strcmp(value, NOTUNDERSTOOD)) {
1272                 if (!IS_PSTATE_PROPOSER(param)) {
1273                         pr_err("Received illegal offer %s=%s\n",
1274                                 param->name, value);
1275                         return -1;
1276                 }
1277
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);
1281                 return -1;
1282         }
1283
1284         do {
1285                 comma_ptr = NULL;
1286                 comma_ptr = strchr(value, ',');
1287
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);
1292                         return -1;
1293                 }
1294                 if (comma_ptr)
1295                         *comma_ptr = '\0';
1296
1297                 if (strlen(value) > VALUE_MAXLEN) {
1298                         pr_err("Value for key \"%s\" exceeds %d,"
1299                                 " protocol error.\n", param->name,
1300                                 VALUE_MAXLEN);
1301                         return -1;
1302                 }
1303
1304                 if (IS_TYPE_BOOL_AND(param) || IS_TYPE_BOOL_OR(param)) {
1305                         if (iscsi_check_boolean_value(param, value) < 0)
1306                                 return -1;
1307                 } else if (IS_TYPE_NUMBER(param)) {
1308                         if (iscsi_check_numerical_value(param, value) < 0)
1309                                 return -1;
1310                 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1311                         if (iscsi_check_numerical_range_value(param, value) < 0)
1312                                 return -1;
1313                 } else if (IS_TYPE_STRING(param) || IS_TYPE_VALUE_LIST(param)) {
1314                         if (iscsi_check_string_or_list_value(param, value) < 0)
1315                                 return -1;
1316                 } else {
1317                         pr_err("Huh? 0x%02x\n", param->type);
1318                         return -1;
1319                 }
1320
1321                 if (comma_ptr)
1322                         *comma_ptr++ = ',';
1323
1324                 value = comma_ptr;
1325         } while (value);
1326
1327         return 0;
1328 }
1329
1330 static struct iscsi_param *__iscsi_check_key(
1331         char *key,
1332         int sender,
1333         struct iscsi_param_list *param_list)
1334 {
1335         struct iscsi_param *param;
1336
1337         if (strlen(key) > KEY_MAXLEN) {
1338                 pr_err("Length of key name \"%s\" exceeds %d.\n",
1339                         key, KEY_MAXLEN);
1340                 return NULL;
1341         }
1342
1343         param = iscsi_find_param_from_key(key, param_list);
1344         if (!param)
1345                 return NULL;
1346
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");
1351                 return NULL;
1352         }
1353
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");
1358                 return NULL;
1359         }
1360
1361         return param;
1362 }
1363
1364 static struct iscsi_param *iscsi_check_key(
1365         char *key,
1366         int phase,
1367         int sender,
1368         struct iscsi_param_list *param_list)
1369 {
1370         struct iscsi_param *param;
1371         /*
1372          * Key name length must not exceed 63 bytes. (See iSCSI v20 5.1)
1373          */
1374         if (strlen(key) > KEY_MAXLEN) {
1375                 pr_err("Length of key name \"%s\" exceeds %d.\n",
1376                         key, KEY_MAXLEN);
1377                 return NULL;
1378         }
1379
1380         param = iscsi_find_param_from_key(key, param_list);
1381         if (!param)
1382                 return NULL;
1383
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");
1388                 return NULL;
1389         }
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");
1394                 return NULL;
1395         }
1396
1397         if (IS_PSTATE_ACCEPTOR(param)) {
1398                 pr_err("Key \"%s\" received twice, protocol error.\n",
1399                                 key);
1400                 return NULL;
1401         }
1402
1403         if (!phase)
1404                 return param;
1405
1406         if (!(param->phase & phase)) {
1407                 pr_err("Key \"%s\" may not be negotiated during ",
1408                                 param->name);
1409                 switch (phase) {
1410                 case PHASE_SECURITY:
1411                         pr_debug("Security phase.\n");
1412                         break;
1413                 case PHASE_OPERATIONAL:
1414                         pr_debug("Operational phase.\n");
1415                 default:
1416                         pr_debug("Unknown phase.\n");
1417                 }
1418                 return NULL;
1419         }
1420
1421         return param;
1422 }
1423
1424 static int iscsi_enforce_integrity_rules(
1425         u8 phase,
1426         struct iscsi_param_list *param_list)
1427 {
1428         char *tmpptr;
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;
1435
1436         list_for_each_entry(param, &param_list->param_list, p_list) {
1437                 if (!(param->phase & phase))
1438                         continue;
1439                 if (!strcmp(param->name, SESSIONTYPE))
1440                         if (!strcmp(param->value, NORMAL))
1441                                 SessionType = 1;
1442                 if (!strcmp(param->name, ERRORRECOVERYLEVEL))
1443                         ErrorRecoveryLevel = simple_strtoul(param->value,
1444                                         &tmpptr, 0);
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,
1450                                         &tmpptr, 0);
1451                 if (!strcmp(param->name, IFMARKER))
1452                         if (!strcmp(param->value, YES))
1453                                 IFMarker = 1;
1454                 if (!strcmp(param->name, OFMARKER))
1455                         if (!strcmp(param->value, YES))
1456                                 OFMarker = 1;
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;
1463         }
1464
1465         list_for_each_entry(param, &param_list->param_list, p_list) {
1466                 if (!(param->phase & phase))
1467                         continue;
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))))
1473                         continue;
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)
1478                                         return -1;
1479                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1480                                         param->name, param->value);
1481                         }
1482                 }
1483                 if (!strcmp(param->name, MAXCONNECTIONS) && !SessionType) {
1484                         if (strcmp(param->value, "1")) {
1485                                 if (iscsi_update_param_value(param, "1") < 0)
1486                                         return -1;
1487                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1488                                         param->name, param->value);
1489                         }
1490                 }
1491                 if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1492                         FirstBurstLength = simple_strtoul(param->value,
1493                                         &tmpptr, 0);
1494                         if (FirstBurstLength > MaxBurstLength) {
1495                                 char tmpbuf[10];
1496                                 memset(tmpbuf, 0, 10);
1497                                 sprintf(tmpbuf, "%u", MaxBurstLength);
1498                                 if (iscsi_update_param_value(param, tmpbuf))
1499                                         return -1;
1500                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1501                                         param->name, param->value);
1502                         }
1503                 }
1504                 if (!strcmp(param->name, IFMARKER) && IFMarkInt_Reject) {
1505                         if (iscsi_update_param_value(param, NO) < 0)
1506                                 return -1;
1507                         IFMarker = 0;
1508                         pr_debug("Reset \"%s\" to \"%s\".\n",
1509                                         param->name, param->value);
1510                 }
1511                 if (!strcmp(param->name, OFMARKER) && OFMarkInt_Reject) {
1512                         if (iscsi_update_param_value(param, NO) < 0)
1513                                 return -1;
1514                         OFMarker = 0;
1515                         pr_debug("Reset \"%s\" to \"%s\".\n",
1516                                          param->name, param->value);
1517                 }
1518                 if (!strcmp(param->name, IFMARKINT) && !IFMarker) {
1519                         if (!strcmp(param->value, REJECT))
1520                                 continue;
1521                         param->state &= ~PSTATE_NEGOTIATE;
1522                         if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1523                                 return -1;
1524                         pr_debug("Reset \"%s\" to \"%s\".\n",
1525                                         param->name, param->value);
1526                 }
1527                 if (!strcmp(param->name, OFMARKINT) && !OFMarker) {
1528                         if (!strcmp(param->value, REJECT))
1529                                 continue;
1530                         param->state &= ~PSTATE_NEGOTIATE;
1531                         if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1532                                 return -1;
1533                         pr_debug("Reset \"%s\" to \"%s\".\n",
1534                                         param->name, param->value);
1535                 }
1536         }
1537
1538         return 0;
1539 }
1540
1541 int iscsi_decode_text_input(
1542         u8 phase,
1543         u8 sender,
1544         char *textbuf,
1545         u32 length,
1546         struct iscsi_param_list *param_list)
1547 {
1548         char *tmpbuf, *start = NULL, *end = NULL;
1549
1550         tmpbuf = kzalloc(length + 1, GFP_KERNEL);
1551         if (!tmpbuf) {
1552                 pr_err("Unable to allocate memory for tmpbuf.\n");
1553                 return -1;
1554         }
1555
1556         memcpy(tmpbuf, textbuf, length);
1557         tmpbuf[length] = '\0';
1558         start = tmpbuf;
1559         end = (start + length);
1560
1561         while (start < end) {
1562                 char *key, *value;
1563                 struct iscsi_param *param;
1564
1565                 if (iscsi_extract_key_value(start, &key, &value) < 0) {
1566                         kfree(tmpbuf);
1567                         return -1;
1568                 }
1569
1570                 pr_debug("Got key: %s=%s\n", key, value);
1571
1572                 if (phase & PHASE_SECURITY) {
1573                         if (iscsi_check_for_auth_key(key) > 0) {
1574                                 char *tmpptr = key + strlen(key);
1575                                 *tmpptr = '=';
1576                                 kfree(tmpbuf);
1577                                 return 1;
1578                         }
1579                 }
1580
1581                 param = iscsi_check_key(key, phase, sender, param_list);
1582                 if (!param) {
1583                         if (iscsi_add_notunderstood_response(key,
1584                                         value, param_list) < 0) {
1585                                 kfree(tmpbuf);
1586                                 return -1;
1587                         }
1588                         start += strlen(key) + strlen(value) + 2;
1589                         continue;
1590                 }
1591                 if (iscsi_check_value(param, value) < 0) {
1592                         kfree(tmpbuf);
1593                         return -1;
1594                 }
1595
1596                 start += strlen(key) + strlen(value) + 2;
1597
1598                 if (IS_PSTATE_PROPOSER(param)) {
1599                         if (iscsi_check_proposer_state(param, value) < 0) {
1600                                 kfree(tmpbuf);
1601                                 return -1;
1602                         }
1603                         SET_PSTATE_RESPONSE_GOT(param);
1604                 } else {
1605                         if (iscsi_check_acceptor_state(param, value) < 0) {
1606                                 kfree(tmpbuf);
1607                                 return -1;
1608                         }
1609                         SET_PSTATE_ACCEPTOR(param);
1610                 }
1611         }
1612
1613         kfree(tmpbuf);
1614         return 0;
1615 }
1616
1617 int iscsi_encode_text_output(
1618         u8 phase,
1619         u8 sender,
1620         char *textbuf,
1621         u32 *length,
1622         struct iscsi_param_list *param_list)
1623 {
1624         char *output_buf = NULL;
1625         struct iscsi_extra_response *er;
1626         struct iscsi_param *param;
1627
1628         output_buf = textbuf + *length;
1629
1630         if (iscsi_enforce_integrity_rules(phase, param_list) < 0)
1631                 return -1;
1632
1633         list_for_each_entry(param, &param_list->param_list, p_list) {
1634                 if (!(param->sender & sender))
1635                         continue;
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);
1642                         *length += 1;
1643                         output_buf = textbuf + *length;
1644                         SET_PSTATE_RESPONSE_SENT(param);
1645                         pr_debug("Sending key: %s=%s\n",
1646                                 param->name, param->value);
1647                         continue;
1648                 }
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);
1655                         *length += 1;
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);
1661                 }
1662         }
1663
1664         list_for_each_entry(er, &param_list->extra_response_list, er_list) {
1665                 *length += sprintf(output_buf, "%s=%s", er->key, er->value);
1666                 *length += 1;
1667                 output_buf = textbuf + *length;
1668                 pr_debug("Sending key: %s=%s\n", er->key, er->value);
1669         }
1670         iscsi_release_extra_responses(param_list);
1671
1672         return 0;
1673 }
1674
1675 int iscsi_check_negotiated_keys(struct iscsi_param_list *param_list)
1676 {
1677         int ret = 0;
1678         struct iscsi_param *param;
1679
1680         list_for_each_entry(param, &param_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",
1687                                         param->name);
1688                         ret = -1;
1689                 }
1690         }
1691
1692         return ret;
1693 }
1694
1695 int iscsi_change_param_value(
1696         char *keyvalue,
1697         struct iscsi_param_list *param_list,
1698         int check_key)
1699 {
1700         char *key = NULL, *value = NULL;
1701         struct iscsi_param *param;
1702         int sender = 0;
1703
1704         if (iscsi_extract_key_value(keyvalue, &key, &value) < 0)
1705                 return -1;
1706
1707         if (!check_key) {
1708                 param = __iscsi_check_key(keyvalue, sender, param_list);
1709                 if (!param)
1710                         return -1;
1711         } else {
1712                 param = iscsi_check_key(keyvalue, 0, sender, param_list);
1713                 if (!param)
1714                         return -1;
1715
1716                 param->set_param = 1;
1717                 if (iscsi_check_value(param, value) < 0) {
1718                         param->set_param = 0;
1719                         return -1;
1720                 }
1721                 param->set_param = 0;
1722         }
1723
1724         if (iscsi_update_param_value(param, value) < 0)
1725                 return -1;
1726
1727         return 0;
1728 }
1729
1730 void iscsi_set_connection_parameters(
1731         struct iscsi_conn_ops *ops,
1732         struct iscsi_param_list *param_list)
1733 {
1734         char *tmpptr;
1735         struct iscsi_param *param;
1736
1737         pr_debug("---------------------------------------------------"
1738                         "---------------\n");
1739         list_for_each_entry(param, &param_list->param_list, p_list) {
1740                 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1741                         continue;
1742                 if (!strcmp(param->name, AUTHMETHOD)) {
1743                         pr_debug("AuthMethod:                   %s\n",
1744                                 param->value);
1745                 } else if (!strcmp(param->name, HEADERDIGEST)) {
1746                         ops->HeaderDigest = !strcmp(param->value, CRC32C);
1747                         pr_debug("HeaderDigest:                 %s\n",
1748                                 param->value);
1749                 } else if (!strcmp(param->name, DATADIGEST)) {
1750                         ops->DataDigest = !strcmp(param->value, CRC32C);
1751                         pr_debug("DataDigest:                   %s\n",
1752                                 param->value);
1753                 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1754                         ops->MaxRecvDataSegmentLength =
1755                                 simple_strtoul(param->value, &tmpptr, 0);
1756                         pr_debug("MaxRecvDataSegmentLength:     %s\n",
1757                                 param->value);
1758                 } else if (!strcmp(param->name, OFMARKER)) {
1759                         ops->OFMarker = !strcmp(param->value, YES);
1760                         pr_debug("OFMarker:                     %s\n",
1761                                 param->value);
1762                 } else if (!strcmp(param->name, IFMARKER)) {
1763                         ops->IFMarker = !strcmp(param->value, YES);
1764                         pr_debug("IFMarker:                     %s\n",
1765                                 param->value);
1766                 } else if (!strcmp(param->name, OFMARKINT)) {
1767                         ops->OFMarkInt =
1768                                 simple_strtoul(param->value, &tmpptr, 0);
1769                         pr_debug("OFMarkInt:                    %s\n",
1770                                 param->value);
1771                 } else if (!strcmp(param->name, IFMARKINT)) {
1772                         ops->IFMarkInt =
1773                                 simple_strtoul(param->value, &tmpptr, 0);
1774                         pr_debug("IFMarkInt:                    %s\n",
1775                                 param->value);
1776                 }
1777         }
1778         pr_debug("----------------------------------------------------"
1779                         "--------------\n");
1780 }
1781
1782 void iscsi_set_session_parameters(
1783         struct iscsi_sess_ops *ops,
1784         struct iscsi_param_list *param_list,
1785         int leading)
1786 {
1787         char *tmpptr;
1788         struct iscsi_param *param;
1789
1790         pr_debug("----------------------------------------------------"
1791                         "--------------\n");
1792         list_for_each_entry(param, &param_list->param_list, p_list) {
1793                 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1794                         continue;
1795                 if (!strcmp(param->name, INITIATORNAME)) {
1796                         if (!param->value)
1797                                 continue;
1798                         if (leading)
1799                                 snprintf(ops->InitiatorName,
1800                                                 sizeof(ops->InitiatorName),
1801                                                 "%s", param->value);
1802                         pr_debug("InitiatorName:                %s\n",
1803                                 param->value);
1804                 } else if (!strcmp(param->name, INITIATORALIAS)) {
1805                         if (!param->value)
1806                                 continue;
1807                         snprintf(ops->InitiatorAlias,
1808                                                 sizeof(ops->InitiatorAlias),
1809                                                 "%s", param->value);
1810                         pr_debug("InitiatorAlias:               %s\n",
1811                                 param->value);
1812                 } else if (!strcmp(param->name, TARGETNAME)) {
1813                         if (!param->value)
1814                                 continue;
1815                         if (leading)
1816                                 snprintf(ops->TargetName,
1817                                                 sizeof(ops->TargetName),
1818                                                 "%s", param->value);
1819                         pr_debug("TargetName:                   %s\n",
1820                                 param->value);
1821                 } else if (!strcmp(param->name, TARGETALIAS)) {
1822                         if (!param->value)
1823                                 continue;
1824                         snprintf(ops->TargetAlias, sizeof(ops->TargetAlias),
1825                                         "%s", param->value);
1826                         pr_debug("TargetAlias:                  %s\n",
1827                                 param->value);
1828                 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
1829                         ops->TargetPortalGroupTag =
1830                                 simple_strtoul(param->value, &tmpptr, 0);
1831                         pr_debug("TargetPortalGroupTag:         %s\n",
1832                                 param->value);
1833                 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
1834                         ops->MaxConnections =
1835                                 simple_strtoul(param->value, &tmpptr, 0);
1836                         pr_debug("MaxConnections:               %s\n",
1837                                 param->value);
1838                 } else if (!strcmp(param->name, INITIALR2T)) {
1839                         ops->InitialR2T = !strcmp(param->value, YES);
1840                          pr_debug("InitialR2T:                   %s\n",
1841                                 param->value);
1842                 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
1843                         ops->ImmediateData = !strcmp(param->value, YES);
1844                         pr_debug("ImmediateData:                %s\n",
1845                                 param->value);
1846                 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
1847                         ops->MaxBurstLength =
1848                                 simple_strtoul(param->value, &tmpptr, 0);
1849                         pr_debug("MaxBurstLength:               %s\n",
1850                                 param->value);
1851                 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1852                         ops->FirstBurstLength =
1853                                 simple_strtoul(param->value, &tmpptr, 0);
1854                         pr_debug("FirstBurstLength:             %s\n",
1855                                 param->value);
1856                 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1857                         ops->DefaultTime2Wait =
1858                                 simple_strtoul(param->value, &tmpptr, 0);
1859                         pr_debug("DefaultTime2Wait:             %s\n",
1860                                 param->value);
1861                 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
1862                         ops->DefaultTime2Retain =
1863                                 simple_strtoul(param->value, &tmpptr, 0);
1864                         pr_debug("DefaultTime2Retain:           %s\n",
1865                                 param->value);
1866                 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
1867                         ops->MaxOutstandingR2T =
1868                                 simple_strtoul(param->value, &tmpptr, 0);
1869                         pr_debug("MaxOutstandingR2T:            %s\n",
1870                                 param->value);
1871                 } else if (!strcmp(param->name, DATAPDUINORDER)) {
1872                         ops->DataPDUInOrder = !strcmp(param->value, YES);
1873                         pr_debug("DataPDUInOrder:               %s\n",
1874                                 param->value);
1875                 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
1876                         ops->DataSequenceInOrder = !strcmp(param->value, YES);
1877                         pr_debug("DataSequenceInOrder:          %s\n",
1878                                 param->value);
1879                 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
1880                         ops->ErrorRecoveryLevel =
1881                                 simple_strtoul(param->value, &tmpptr, 0);
1882                         pr_debug("ErrorRecoveryLevel:           %s\n",
1883                                 param->value);
1884                 } else if (!strcmp(param->name, SESSIONTYPE)) {
1885                         ops->SessionType = !strcmp(param->value, DISCOVERY);
1886                         pr_debug("SessionType:                  %s\n",
1887                                 param->value);
1888                 }
1889         }
1890         pr_debug("----------------------------------------------------"
1891                         "--------------\n");
1892
1893 }