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, *tmp_ptr = NULL;
 878         u32 left_val, right_val, local_left_val, local_right_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, &tmp_ptr, 0);
 907         right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 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, &tmp_ptr, 0);
 932         local_right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0);
 933         *tilde_ptr = '~';
 934
 935         if (param->set_param) {
 936                 if ((left_val < local_left_val) ||
 937                     (right_val < local_left_val)) {
 938                         pr_err("Passed value range \"%u~%u\" is below"
 939                                 " minimum left value \"%u\" for key \"%s\","
 940                                 " rejecting.\n", left_val, right_val,
 941                                 local_left_val, param->name);
 942                         return -1;
 943                 }
 944         } else {
 945                 if ((left_val < local_left_val) &&
 946                     (right_val < local_left_val)) {
 947                         pr_err("Received value range \"%u~%u\" is"
 948                                 " below minimum left value \"%u\" for key"
 949                                 " \"%s\", rejecting.\n", left_val, right_val,
 950                                 local_left_val, param->name);
 951                         SET_PSTATE_REJECT(param);
 952                         if (iscsi_update_param_value(param, REJECT) < 0)
 953                                 return -1;
 954                 }
 955         }
 956
 957         return 0;
 958 }
 959
 960 static int iscsi_check_string_or_list_value(struct iscsi_param *param, char *value)
 961 {
 962         if (IS_PSTATE_PROPOSER(param))
 963                 return 0;
 964
 965         if (IS_TYPERANGE_AUTH_PARAM(param)) {
 966                 if (strcmp(value, KRB5) && strcmp(value, SPKM1) &&
 967                     strcmp(value, SPKM2) && strcmp(value, SRP) &&
 968                     strcmp(value, CHAP) && strcmp(value, NONE)) {
 969                         pr_err("Illegal value for \"%s\", must be"
 970                                 " \"%s\", \"%s\", \"%s\", \"%s\", \"%s\""
 971                                 " or \"%s\".\n", param->name, KRB5,
 972                                         SPKM1, SPKM2, SRP, CHAP, NONE);
 973                         return -1;
 974                 }
 975         }
 976         if (IS_TYPERANGE_DIGEST_PARAM(param)) {
 977                 if (strcmp(value, CRC32C) && strcmp(value, NONE)) {
 978                         pr_err("Illegal value for \"%s\", must be"
 979                                 " \"%s\" or \"%s\".\n", param->name,
 980                                         CRC32C, NONE);
 981                         return -1;
 982                 }
 983         }
 984         if (IS_TYPERANGE_SESSIONTYPE(param)) {
 985                 if (strcmp(value, DISCOVERY) && strcmp(value, NORMAL)) {
 986                         pr_err("Illegal value for \"%s\", must be"
 987                                 " \"%s\" or \"%s\".\n", param->name,
 988                                         DISCOVERY, NORMAL);
 989                         return -1;
 990                 }
 991         }
 992
 993         return 0;
 994 }
 995
 996 /*
 997  *      This function is used to pick a value range number,  currently just
 998  *      returns the lesser of both right values.
 999  */
1000 static char *iscsi_get_value_from_number_range(
1001         struct iscsi_param *param,
1002         char *value)
1003 {
1004         char *end_ptr, *tilde_ptr1 = NULL, *tilde_ptr2 = NULL;
1005         u32 acceptor_right_value, proposer_right_value;
1006
1007         tilde_ptr1 = strchr(value, '~');
1008         if (!tilde_ptr1)
1009                 return NULL;
1010         *tilde_ptr1++ = '\0';
1011         proposer_right_value = simple_strtoul(tilde_ptr1, &end_ptr, 0);
1012
1013         tilde_ptr2 = strchr(param->value, '~');
1014         if (!tilde_ptr2)
1015                 return NULL;
1016         *tilde_ptr2++ = '\0';
1017         acceptor_right_value = simple_strtoul(tilde_ptr2, &end_ptr, 0);
1018
1019         return (acceptor_right_value >= proposer_right_value) ?
1020                 tilde_ptr1 : tilde_ptr2;
1021 }
1022
1023 static char *iscsi_check_valuelist_for_support(
1024         struct iscsi_param *param,
1025         char *value)
1026 {
1027         char *tmp1 = NULL, *tmp2 = NULL;
1028         char *acceptor_values = NULL, *proposer_values = NULL;
1029
1030         acceptor_values = param->value;
1031         proposer_values = value;
1032
1033         do {
1034                 if (!proposer_values)
1035                         return NULL;
1036                 tmp1 = strchr(proposer_values, ',');
1037                 if (tmp1)
1038                         *tmp1 = '\0';
1039                 acceptor_values = param->value;
1040                 do {
1041                         if (!acceptor_values) {
1042                                 if (tmp1)
1043                                         *tmp1 = ',';
1044                                 return NULL;
1045                         }
1046                         tmp2 = strchr(acceptor_values, ',');
1047                         if (tmp2)
1048                                 *tmp2 = '\0';
1049                         if (!acceptor_values || !proposer_values) {
1050                                 if (tmp1)
1051                                         *tmp1 = ',';
1052                                 if (tmp2)
1053                                         *tmp2 = ',';
1054                                 return NULL;
1055                         }
1056                         if (!strcmp(acceptor_values, proposer_values)) {
1057                                 if (tmp2)
1058                                         *tmp2 = ',';
1059                                 goto out;
1060                         }
1061                         if (tmp2)
1062                                 *tmp2++ = ',';
1063
1064                         acceptor_values = tmp2;
1065                         if (!acceptor_values)
1066                                 break;
1067                 } while (acceptor_values);
1068                 if (tmp1)
1069                         *tmp1++ = ',';
1070                 proposer_values = tmp1;
1071         } while (proposer_values);
1072
1073 out:
1074         return proposer_values;
1075 }
1076
1077 static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value)
1078 {
1079         u8 acceptor_boolean_value = 0, proposer_boolean_value = 0;
1080         char *negoitated_value = NULL;
1081
1082         if (IS_PSTATE_ACCEPTOR(param)) {
1083                 pr_err("Received key \"%s\" twice, protocol error.\n",
1084                                 param->name);
1085                 return -1;
1086         }
1087
1088         if (IS_PSTATE_REJECT(param))
1089                 return 0;
1090
1091         if (IS_TYPE_BOOL_AND(param)) {
1092                 if (!strcmp(value, YES))
1093                         proposer_boolean_value = 1;
1094                 if (!strcmp(param->value, YES))
1095                         acceptor_boolean_value = 1;
1096                 if (acceptor_boolean_value && proposer_boolean_value)
1097                         do {} while (0);
1098                 else {
1099                         if (iscsi_update_param_value(param, NO) < 0)
1100                                 return -1;
1101                         if (!proposer_boolean_value)
1102                                 SET_PSTATE_REPLY_OPTIONAL(param);
1103                 }
1104         } else if (IS_TYPE_BOOL_OR(param)) {
1105                 if (!strcmp(value, YES))
1106                         proposer_boolean_value = 1;
1107                 if (!strcmp(param->value, YES))
1108                         acceptor_boolean_value = 1;
1109                 if (acceptor_boolean_value || proposer_boolean_value) {
1110                         if (iscsi_update_param_value(param, YES) < 0)
1111                                 return -1;
1112                         if (proposer_boolean_value)
1113                                 SET_PSTATE_REPLY_OPTIONAL(param);
1114                 }
1115         } else if (IS_TYPE_NUMBER(param)) {
1116                 char *tmpptr, buf[10];
1117                 u32 acceptor_value = simple_strtoul(param->value, &tmpptr, 0);
1118                 u32 proposer_value = simple_strtoul(value, &tmpptr, 0);
1119
1120                 memset(buf, 0, 10);
1121
1122                 if (!strcmp(param->name, MAXCONNECTIONS) ||
1123                     !strcmp(param->name, MAXBURSTLENGTH) ||
1124                     !strcmp(param->name, FIRSTBURSTLENGTH) ||
1125                     !strcmp(param->name, MAXOUTSTANDINGR2T) ||
1126                     !strcmp(param->name, DEFAULTTIME2RETAIN) ||
1127                     !strcmp(param->name, ERRORRECOVERYLEVEL)) {
1128                         if (proposer_value > acceptor_value) {
1129                                 sprintf(buf, "%u", acceptor_value);
1130                                 if (iscsi_update_param_value(param,
1131                                                 &buf[0]) < 0)
1132                                         return -1;
1133                         } else {
1134                                 if (iscsi_update_param_value(param, value) < 0)
1135                                         return -1;
1136                         }
1137                 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1138                         if (acceptor_value > proposer_value) {
1139                                 sprintf(buf, "%u", acceptor_value);
1140                                 if (iscsi_update_param_value(param,
1141                                                 &buf[0]) < 0)
1142                                         return -1;
1143                         } else {
1144                                 if (iscsi_update_param_value(param, value) < 0)
1145                                         return -1;
1146                         }
1147                 } else {
1148                         if (iscsi_update_param_value(param, value) < 0)
1149                                 return -1;
1150                 }
1151
1152                 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH))
1153                         SET_PSTATE_REPLY_OPTIONAL(param);
1154         } else if (IS_TYPE_NUMBER_RANGE(param)) {
1155                 negoitated_value = iscsi_get_value_from_number_range(
1156                                         param, value);
1157                 if (!negoitated_value)
1158                         return -1;
1159                 if (iscsi_update_param_value(param, negoitated_value) < 0)
1160                         return -1;
1161         } else if (IS_TYPE_VALUE_LIST(param)) {
1162                 negoitated_value = iscsi_check_valuelist_for_support(
1163                                         param, value);
1164                 if (!negoitated_value) {
1165                         pr_err("Proposer's value list \"%s\" contains"
1166                                 " no valid values from Acceptor's value list"
1167                                 " \"%s\".\n", value, param->value);
1168                         return -1;
1169                 }
1170                 if (iscsi_update_param_value(param, negoitated_value) < 0)
1171                         return -1;
1172         } else if (IS_PHASE_DECLARATIVE(param)) {
1173                 if (iscsi_update_param_value(param, value) < 0)
1174                         return -1;
1175                 SET_PSTATE_REPLY_OPTIONAL(param);
1176         }
1177
1178         return 0;
1179 }
1180
1181 static int iscsi_check_proposer_state(struct iscsi_param *param, char *value)
1182 {
1183         if (IS_PSTATE_RESPONSE_GOT(param)) {
1184                 pr_err("Received key \"%s\" twice, protocol error.\n",
1185                                 param->name);
1186                 return -1;
1187         }
1188
1189         if (IS_TYPE_NUMBER_RANGE(param)) {
1190                 u32 left_val = 0, right_val = 0, recieved_value = 0;
1191                 char *left_val_ptr = NULL, *right_val_ptr = NULL;
1192                 char *tilde_ptr = NULL, *tmp_ptr = NULL;
1193
1194                 if (!strcmp(value, IRRELEVANT) || !strcmp(value, REJECT)) {
1195                         if (iscsi_update_param_value(param, value) < 0)
1196                                 return -1;
1197                         return 0;
1198                 }
1199
1200                 tilde_ptr = strchr(value, '~');
1201                 if (tilde_ptr) {
1202                         pr_err("Illegal \"~\" in response for \"%s\".\n",
1203                                         param->name);
1204                         return -1;
1205                 }
1206                 tilde_ptr = strchr(param->value, '~');
1207                 if (!tilde_ptr) {
1208                         pr_err("Unable to locate numerical range"
1209                                 " indicator \"~\" for \"%s\".\n", param->name);
1210                         return -1;
1211                 }
1212                 *tilde_ptr = '\0';
1213
1214                 left_val_ptr = param->value;
1215                 right_val_ptr = param->value + strlen(left_val_ptr) + 1;
1216                 left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0);
1217                 right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0);
1218                 recieved_value = simple_strtoul(value, &tmp_ptr, 0);
1219
1220                 *tilde_ptr = '~';
1221
1222                 if ((recieved_value < left_val) ||
1223                     (recieved_value > right_val)) {
1224                         pr_err("Illegal response \"%s=%u\", value must"
1225                                 " be between %u and %u.\n", param->name,
1226                                 recieved_value, left_val, right_val);
1227                         return -1;
1228                 }
1229         } else if (IS_TYPE_VALUE_LIST(param)) {
1230                 char *comma_ptr = NULL, *tmp_ptr = NULL;
1231
1232                 comma_ptr = strchr(value, ',');
1233                 if (comma_ptr) {
1234                         pr_err("Illegal \",\" in response for \"%s\".\n",
1235                                         param->name);
1236                         return -1;
1237                 }
1238
1239                 tmp_ptr = iscsi_check_valuelist_for_support(param, value);
1240                 if (!tmp_ptr)
1241                         return -1;
1242         }
1243
1244         if (iscsi_update_param_value(param, value) < 0)
1245                 return -1;
1246
1247         return 0;
1248 }
1249
1250 static int iscsi_check_value(struct iscsi_param *param, char *value)
1251 {
1252         char *comma_ptr = NULL;
1253
1254         if (!strcmp(value, REJECT)) {
1255                 if (!strcmp(param->name, IFMARKINT) ||
1256                     !strcmp(param->name, OFMARKINT)) {
1257                         /*
1258                          * Reject is not fatal for [I,O]FMarkInt,  and causes
1259                          * [I,O]FMarker to be reset to No. (See iSCSI v20 A.3.2)
1260                          */
1261                         SET_PSTATE_REJECT(param);
1262                         return 0;
1263                 }
1264                 pr_err("Received %s=%s\n", param->name, value);
1265                 return -1;
1266         }
1267         if (!strcmp(value, IRRELEVANT)) {
1268                 pr_debug("Received %s=%s\n", param->name, value);
1269                 SET_PSTATE_IRRELEVANT(param);
1270                 return 0;
1271         }
1272         if (!strcmp(value, NOTUNDERSTOOD)) {
1273                 if (!IS_PSTATE_PROPOSER(param)) {
1274                         pr_err("Received illegal offer %s=%s\n",
1275                                 param->name, value);
1276                         return -1;
1277                 }
1278
1279 /* #warning FIXME: Add check for X-ExtensionKey here */
1280                 pr_err("Standard iSCSI key \"%s\" cannot be answered"
1281                         " with \"%s\", protocol error.\n", param->name, value);
1282                 return -1;
1283         }
1284
1285         do {
1286                 comma_ptr = NULL;
1287                 comma_ptr = strchr(value, ',');
1288
1289                 if (comma_ptr && !IS_TYPE_VALUE_LIST(param)) {
1290                         pr_err("Detected value seperator \",\", but"
1291                                 " key \"%s\" does not allow a value list,"
1292                                 " protocol error.\n", param->name);
1293                         return -1;
1294                 }
1295                 if (comma_ptr)
1296                         *comma_ptr = '\0';
1297
1298                 if (strlen(value) > VALUE_MAXLEN) {
1299                         pr_err("Value for key \"%s\" exceeds %d,"
1300                                 " protocol error.\n", param->name,
1301                                 VALUE_MAXLEN);
1302                         return -1;
1303                 }
1304
1305                 if (IS_TYPE_BOOL_AND(param) || IS_TYPE_BOOL_OR(param)) {
1306                         if (iscsi_check_boolean_value(param, value) < 0)
1307                                 return -1;
1308                 } else if (IS_TYPE_NUMBER(param)) {
1309                         if (iscsi_check_numerical_value(param, value) < 0)
1310                                 return -1;
1311                 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1312                         if (iscsi_check_numerical_range_value(param, value) < 0)
1313                                 return -1;
1314                 } else if (IS_TYPE_STRING(param) || IS_TYPE_VALUE_LIST(param)) {
1315                         if (iscsi_check_string_or_list_value(param, value) < 0)
1316                                 return -1;
1317                 } else {
1318                         pr_err("Huh? 0x%02x\n", param->type);
1319                         return -1;
1320                 }
1321
1322                 if (comma_ptr)
1323                         *comma_ptr++ = ',';
1324
1325                 value = comma_ptr;
1326         } while (value);
1327
1328         return 0;
1329 }
1330
1331 static struct iscsi_param *__iscsi_check_key(
1332         char *key,
1333         int sender,
1334         struct iscsi_param_list *param_list)
1335 {
1336         struct iscsi_param *param;
1337
1338         if (strlen(key) > KEY_MAXLEN) {
1339                 pr_err("Length of key name \"%s\" exceeds %d.\n",
1340                         key, KEY_MAXLEN);
1341                 return NULL;
1342         }
1343
1344         param = iscsi_find_param_from_key(key, param_list);
1345         if (!param)
1346                 return NULL;
1347
1348         if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1349                 pr_err("Key \"%s\" may not be sent to %s,"
1350                         " protocol error.\n", param->name,
1351                         (sender & SENDER_RECEIVER) ? "target" : "initiator");
1352                 return NULL;
1353         }
1354
1355         if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1356                 pr_err("Key \"%s\" may not be sent to %s,"
1357                         " protocol error.\n", param->name,
1358                         (sender & SENDER_RECEIVER) ? "initiator" : "target");
1359                 return NULL;
1360         }
1361
1362         return param;
1363 }
1364
1365 static struct iscsi_param *iscsi_check_key(
1366         char *key,
1367         int phase,
1368         int sender,
1369         struct iscsi_param_list *param_list)
1370 {
1371         struct iscsi_param *param;
1372         /*
1373          * Key name length must not exceed 63 bytes. (See iSCSI v20 5.1)
1374          */
1375         if (strlen(key) > KEY_MAXLEN) {
1376                 pr_err("Length of key name \"%s\" exceeds %d.\n",
1377                         key, KEY_MAXLEN);
1378                 return NULL;
1379         }
1380
1381         param = iscsi_find_param_from_key(key, param_list);
1382         if (!param)
1383                 return NULL;
1384
1385         if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1386                 pr_err("Key \"%s\" may not be sent to %s,"
1387                         " protocol error.\n", param->name,
1388                         (sender & SENDER_RECEIVER) ? "target" : "initiator");
1389                 return NULL;
1390         }
1391         if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1392                 pr_err("Key \"%s\" may not be sent to %s,"
1393                                 " protocol error.\n", param->name,
1394                         (sender & SENDER_RECEIVER) ? "initiator" : "target");
1395                 return NULL;
1396         }
1397
1398         if (IS_PSTATE_ACCEPTOR(param)) {
1399                 pr_err("Key \"%s\" received twice, protocol error.\n",
1400                                 key);
1401                 return NULL;
1402         }
1403
1404         if (!phase)
1405                 return param;
1406
1407         if (!(param->phase & phase)) {
1408                 pr_err("Key \"%s\" may not be negotiated during ",
1409                                 param->name);
1410                 switch (phase) {
1411                 case PHASE_SECURITY:
1412                         pr_debug("Security phase.\n");
1413                         break;
1414                 case PHASE_OPERATIONAL:
1415                         pr_debug("Operational phase.\n");
1416                 default:
1417                         pr_debug("Unknown phase.\n");
1418                 }
1419                 return NULL;
1420         }
1421
1422         return param;
1423 }
1424
1425 static int iscsi_enforce_integrity_rules(
1426         u8 phase,
1427         struct iscsi_param_list *param_list)
1428 {
1429         char *tmpptr;
1430         u8 DataSequenceInOrder = 0;
1431         u8 ErrorRecoveryLevel = 0, SessionType = 0;
1432         u8 IFMarker = 0, OFMarker = 0;
1433         u8 IFMarkInt_Reject = 1, OFMarkInt_Reject = 1;
1434         u32 FirstBurstLength = 0, MaxBurstLength = 0;
1435         struct iscsi_param *param = NULL;
1436
1437         list_for_each_entry(param, &param_list->param_list, p_list) {
1438                 if (!(param->phase & phase))
1439                         continue;
1440                 if (!strcmp(param->name, SESSIONTYPE))
1441                         if (!strcmp(param->value, NORMAL))
1442                                 SessionType = 1;
1443                 if (!strcmp(param->name, ERRORRECOVERYLEVEL))
1444                         ErrorRecoveryLevel = simple_strtoul(param->value,
1445                                         &tmpptr, 0);
1446                 if (!strcmp(param->name, DATASEQUENCEINORDER))
1447                         if (!strcmp(param->value, YES))
1448                                 DataSequenceInOrder = 1;
1449                 if (!strcmp(param->name, MAXBURSTLENGTH))
1450                         MaxBurstLength = simple_strtoul(param->value,
1451                                         &tmpptr, 0);
1452                 if (!strcmp(param->name, IFMARKER))
1453                         if (!strcmp(param->value, YES))
1454                                 IFMarker = 1;
1455                 if (!strcmp(param->name, OFMARKER))
1456                         if (!strcmp(param->value, YES))
1457                                 OFMarker = 1;
1458                 if (!strcmp(param->name, IFMARKINT))
1459                         if (!strcmp(param->value, REJECT))
1460                                 IFMarkInt_Reject = 1;
1461                 if (!strcmp(param->name, OFMARKINT))
1462                         if (!strcmp(param->value, REJECT))
1463                                 OFMarkInt_Reject = 1;
1464         }
1465
1466         list_for_each_entry(param, &param_list->param_list, p_list) {
1467                 if (!(param->phase & phase))
1468                         continue;
1469                 if (!SessionType && (!IS_PSTATE_ACCEPTOR(param) &&
1470                      (strcmp(param->name, IFMARKER) &&
1471                       strcmp(param->name, OFMARKER) &&
1472                       strcmp(param->name, IFMARKINT) &&
1473                       strcmp(param->name, OFMARKINT))))
1474                         continue;
1475                 if (!strcmp(param->name, MAXOUTSTANDINGR2T) &&
1476                     DataSequenceInOrder && (ErrorRecoveryLevel > 0)) {
1477                         if (strcmp(param->value, "1")) {
1478                                 if (iscsi_update_param_value(param, "1") < 0)
1479                                         return -1;
1480                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1481                                         param->name, param->value);
1482                         }
1483                 }
1484                 if (!strcmp(param->name, MAXCONNECTIONS) && !SessionType) {
1485                         if (strcmp(param->value, "1")) {
1486                                 if (iscsi_update_param_value(param, "1") < 0)
1487                                         return -1;
1488                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1489                                         param->name, param->value);
1490                         }
1491                 }
1492                 if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1493                         FirstBurstLength = simple_strtoul(param->value,
1494                                         &tmpptr, 0);
1495                         if (FirstBurstLength > MaxBurstLength) {
1496                                 char tmpbuf[10];
1497                                 memset(tmpbuf, 0, 10);
1498                                 sprintf(tmpbuf, "%u", MaxBurstLength);
1499                                 if (iscsi_update_param_value(param, tmpbuf))
1500                                         return -1;
1501                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1502                                         param->name, param->value);
1503                         }
1504                 }
1505                 if (!strcmp(param->name, IFMARKER) && IFMarkInt_Reject) {
1506                         if (iscsi_update_param_value(param, NO) < 0)
1507                                 return -1;
1508                         IFMarker = 0;
1509                         pr_debug("Reset \"%s\" to \"%s\".\n",
1510                                         param->name, param->value);
1511                 }
1512                 if (!strcmp(param->name, OFMARKER) && OFMarkInt_Reject) {
1513                         if (iscsi_update_param_value(param, NO) < 0)
1514                                 return -1;
1515                         OFMarker = 0;
1516                         pr_debug("Reset \"%s\" to \"%s\".\n",
1517                                          param->name, param->value);
1518                 }
1519                 if (!strcmp(param->name, IFMARKINT) && !IFMarker) {
1520                         if (!strcmp(param->value, REJECT))
1521                                 continue;
1522                         param->state &= ~PSTATE_NEGOTIATE;
1523                         if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1524                                 return -1;
1525                         pr_debug("Reset \"%s\" to \"%s\".\n",
1526                                         param->name, param->value);
1527                 }
1528                 if (!strcmp(param->name, OFMARKINT) && !OFMarker) {
1529                         if (!strcmp(param->value, REJECT))
1530                                 continue;
1531                         param->state &= ~PSTATE_NEGOTIATE;
1532                         if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1533                                 return -1;
1534                         pr_debug("Reset \"%s\" to \"%s\".\n",
1535                                         param->name, param->value);
1536                 }
1537         }
1538
1539         return 0;
1540 }
1541
1542 int iscsi_decode_text_input(
1543         u8 phase,
1544         u8 sender,
1545         char *textbuf,
1546         u32 length,
1547         struct iscsi_param_list *param_list)
1548 {
1549         char *tmpbuf, *start = NULL, *end = NULL;
1550
1551         tmpbuf = kzalloc(length + 1, GFP_KERNEL);
1552         if (!tmpbuf) {
1553                 pr_err("Unable to allocate memory for tmpbuf.\n");
1554                 return -1;
1555         }
1556
1557         memcpy(tmpbuf, textbuf, length);
1558         tmpbuf[length] = '\0';
1559         start = tmpbuf;
1560         end = (start + length);
1561
1562         while (start < end) {
1563                 char *key, *value;
1564                 struct iscsi_param *param;
1565
1566                 if (iscsi_extract_key_value(start, &key, &value) < 0) {
1567                         kfree(tmpbuf);
1568                         return -1;
1569                 }
1570
1571                 pr_debug("Got key: %s=%s\n", key, value);
1572
1573                 if (phase & PHASE_SECURITY) {
1574                         if (iscsi_check_for_auth_key(key) > 0) {
1575                                 char *tmpptr = key + strlen(key);
1576                                 *tmpptr = '=';
1577                                 kfree(tmpbuf);
1578                                 return 1;
1579                         }
1580                 }
1581
1582                 param = iscsi_check_key(key, phase, sender, param_list);
1583                 if (!param) {
1584                         if (iscsi_add_notunderstood_response(key,
1585                                         value, param_list) < 0) {
1586                                 kfree(tmpbuf);
1587                                 return -1;
1588                         }
1589                         start += strlen(key) + strlen(value) + 2;
1590                         continue;
1591                 }
1592                 if (iscsi_check_value(param, value) < 0) {
1593                         kfree(tmpbuf);
1594                         return -1;
1595                 }
1596
1597                 start += strlen(key) + strlen(value) + 2;
1598
1599                 if (IS_PSTATE_PROPOSER(param)) {
1600                         if (iscsi_check_proposer_state(param, value) < 0) {
1601                                 kfree(tmpbuf);
1602                                 return -1;
1603                         }
1604                         SET_PSTATE_RESPONSE_GOT(param);
1605                 } else {
1606                         if (iscsi_check_acceptor_state(param, value) < 0) {
1607                                 kfree(tmpbuf);
1608                                 return -1;
1609                         }
1610                         SET_PSTATE_ACCEPTOR(param);
1611                 }
1612         }
1613
1614         kfree(tmpbuf);
1615         return 0;
1616 }
1617
1618 int iscsi_encode_text_output(
1619         u8 phase,
1620         u8 sender,
1621         char *textbuf,
1622         u32 *length,
1623         struct iscsi_param_list *param_list)
1624 {
1625         char *output_buf = NULL;
1626         struct iscsi_extra_response *er;
1627         struct iscsi_param *param;
1628
1629         output_buf = textbuf + *length;
1630
1631         if (iscsi_enforce_integrity_rules(phase, param_list) < 0)
1632                 return -1;
1633
1634         list_for_each_entry(param, &param_list->param_list, p_list) {
1635                 if (!(param->sender & sender))
1636                         continue;
1637                 if (IS_PSTATE_ACCEPTOR(param) &&
1638                     !IS_PSTATE_RESPONSE_SENT(param) &&
1639                     !IS_PSTATE_REPLY_OPTIONAL(param) &&
1640                     (param->phase & phase)) {
1641                         *length += sprintf(output_buf, "%s=%s",
1642                                 param->name, param->value);
1643                         *length += 1;
1644                         output_buf = textbuf + *length;
1645                         SET_PSTATE_RESPONSE_SENT(param);
1646                         pr_debug("Sending key: %s=%s\n",
1647                                 param->name, param->value);
1648                         continue;
1649                 }
1650                 if (IS_PSTATE_NEGOTIATE(param) &&
1651                     !IS_PSTATE_ACCEPTOR(param) &&
1652                     !IS_PSTATE_PROPOSER(param) &&
1653                     (param->phase & phase)) {
1654                         *length += sprintf(output_buf, "%s=%s",
1655                                 param->name, param->value);
1656                         *length += 1;
1657                         output_buf = textbuf + *length;
1658                         SET_PSTATE_PROPOSER(param);
1659                         iscsi_check_proposer_for_optional_reply(param);
1660                         pr_debug("Sending key: %s=%s\n",
1661                                 param->name, param->value);
1662                 }
1663         }
1664
1665         list_for_each_entry(er, &param_list->extra_response_list, er_list) {
1666                 *length += sprintf(output_buf, "%s=%s", er->key, er->value);
1667                 *length += 1;
1668                 output_buf = textbuf + *length;
1669                 pr_debug("Sending key: %s=%s\n", er->key, er->value);
1670         }
1671         iscsi_release_extra_responses(param_list);
1672
1673         return 0;
1674 }
1675
1676 int iscsi_check_negotiated_keys(struct iscsi_param_list *param_list)
1677 {
1678         int ret = 0;
1679         struct iscsi_param *param;
1680
1681         list_for_each_entry(param, &param_list->param_list, p_list) {
1682                 if (IS_PSTATE_NEGOTIATE(param) &&
1683                     IS_PSTATE_PROPOSER(param) &&
1684                     !IS_PSTATE_RESPONSE_GOT(param) &&
1685                     !IS_PSTATE_REPLY_OPTIONAL(param) &&
1686                     !IS_PHASE_DECLARATIVE(param)) {
1687                         pr_err("No response for proposed key \"%s\".\n",
1688                                         param->name);
1689                         ret = -1;
1690                 }
1691         }
1692
1693         return ret;
1694 }
1695
1696 int iscsi_change_param_value(
1697         char *keyvalue,
1698         struct iscsi_param_list *param_list,
1699         int check_key)
1700 {
1701         char *key = NULL, *value = NULL;
1702         struct iscsi_param *param;
1703         int sender = 0;
1704
1705         if (iscsi_extract_key_value(keyvalue, &key, &value) < 0)
1706                 return -1;
1707
1708         if (!check_key) {
1709                 param = __iscsi_check_key(keyvalue, sender, param_list);
1710                 if (!param)
1711                         return -1;
1712         } else {
1713                 param = iscsi_check_key(keyvalue, 0, sender, param_list);
1714                 if (!param)
1715                         return -1;
1716
1717                 param->set_param = 1;
1718                 if (iscsi_check_value(param, value) < 0) {
1719                         param->set_param = 0;
1720                         return -1;
1721                 }
1722                 param->set_param = 0;
1723         }
1724
1725         if (iscsi_update_param_value(param, value) < 0)
1726                 return -1;
1727
1728         return 0;
1729 }
1730
1731 void iscsi_set_connection_parameters(
1732         struct iscsi_conn_ops *ops,
1733         struct iscsi_param_list *param_list)
1734 {
1735         char *tmpptr;
1736         struct iscsi_param *param;
1737
1738         pr_debug("---------------------------------------------------"
1739                         "---------------\n");
1740         list_for_each_entry(param, &param_list->param_list, p_list) {
1741                 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1742                         continue;
1743                 if (!strcmp(param->name, AUTHMETHOD)) {
1744                         pr_debug("AuthMethod:                   %s\n",
1745                                 param->value);
1746                 } else if (!strcmp(param->name, HEADERDIGEST)) {
1747                         ops->HeaderDigest = !strcmp(param->value, CRC32C);
1748                         pr_debug("HeaderDigest:                 %s\n",
1749                                 param->value);
1750                 } else if (!strcmp(param->name, DATADIGEST)) {
1751                         ops->DataDigest = !strcmp(param->value, CRC32C);
1752                         pr_debug("DataDigest:                   %s\n",
1753                                 param->value);
1754                 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1755                         ops->MaxRecvDataSegmentLength =
1756                                 simple_strtoul(param->value, &tmpptr, 0);
1757                         pr_debug("MaxRecvDataSegmentLength:     %s\n",
1758                                 param->value);
1759                 } else if (!strcmp(param->name, OFMARKER)) {
1760                         ops->OFMarker = !strcmp(param->value, YES);
1761                         pr_debug("OFMarker:                     %s\n",
1762                                 param->value);
1763                 } else if (!strcmp(param->name, IFMARKER)) {
1764                         ops->IFMarker = !strcmp(param->value, YES);
1765                         pr_debug("IFMarker:                     %s\n",
1766                                 param->value);
1767                 } else if (!strcmp(param->name, OFMARKINT)) {
1768                         ops->OFMarkInt =
1769                                 simple_strtoul(param->value, &tmpptr, 0);
1770                         pr_debug("OFMarkInt:                    %s\n",
1771                                 param->value);
1772                 } else if (!strcmp(param->name, IFMARKINT)) {
1773                         ops->IFMarkInt =
1774                                 simple_strtoul(param->value, &tmpptr, 0);
1775                         pr_debug("IFMarkInt:                    %s\n",
1776                                 param->value);
1777                 }
1778         }
1779         pr_debug("----------------------------------------------------"
1780                         "--------------\n");
1781 }
1782
1783 void iscsi_set_session_parameters(
1784         struct iscsi_sess_ops *ops,
1785         struct iscsi_param_list *param_list,
1786         int leading)
1787 {
1788         char *tmpptr;
1789         struct iscsi_param *param;
1790
1791         pr_debug("----------------------------------------------------"
1792                         "--------------\n");
1793         list_for_each_entry(param, &param_list->param_list, p_list) {
1794                 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1795                         continue;
1796                 if (!strcmp(param->name, INITIATORNAME)) {
1797                         if (!param->value)
1798                                 continue;
1799                         if (leading)
1800                                 snprintf(ops->InitiatorName,
1801                                                 sizeof(ops->InitiatorName),
1802                                                 "%s", param->value);
1803                         pr_debug("InitiatorName:                %s\n",
1804                                 param->value);
1805                 } else if (!strcmp(param->name, INITIATORALIAS)) {
1806                         if (!param->value)
1807                                 continue;
1808                         snprintf(ops->InitiatorAlias,
1809                                                 sizeof(ops->InitiatorAlias),
1810                                                 "%s", param->value);
1811                         pr_debug("InitiatorAlias:               %s\n",
1812                                 param->value);
1813                 } else if (!strcmp(param->name, TARGETNAME)) {
1814                         if (!param->value)
1815                                 continue;
1816                         if (leading)
1817                                 snprintf(ops->TargetName,
1818                                                 sizeof(ops->TargetName),
1819                                                 "%s", param->value);
1820                         pr_debug("TargetName:                   %s\n",
1821                                 param->value);
1822                 } else if (!strcmp(param->name, TARGETALIAS)) {
1823                         if (!param->value)
1824                                 continue;
1825                         snprintf(ops->TargetAlias, sizeof(ops->TargetAlias),
1826                                         "%s", param->value);
1827                         pr_debug("TargetAlias:                  %s\n",
1828                                 param->value);
1829                 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
1830                         ops->TargetPortalGroupTag =
1831                                 simple_strtoul(param->value, &tmpptr, 0);
1832                         pr_debug("TargetPortalGroupTag:         %s\n",
1833                                 param->value);
1834                 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
1835                         ops->MaxConnections =
1836                                 simple_strtoul(param->value, &tmpptr, 0);
1837                         pr_debug("MaxConnections:               %s\n",
1838                                 param->value);
1839                 } else if (!strcmp(param->name, INITIALR2T)) {
1840                         ops->InitialR2T = !strcmp(param->value, YES);
1841                          pr_debug("InitialR2T:                   %s\n",
1842                                 param->value);
1843                 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
1844                         ops->ImmediateData = !strcmp(param->value, YES);
1845                         pr_debug("ImmediateData:                %s\n",
1846                                 param->value);
1847                 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
1848                         ops->MaxBurstLength =
1849                                 simple_strtoul(param->value, &tmpptr, 0);
1850                         pr_debug("MaxBurstLength:               %s\n",
1851                                 param->value);
1852                 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1853                         ops->FirstBurstLength =
1854                                 simple_strtoul(param->value, &tmpptr, 0);
1855                         pr_debug("FirstBurstLength:             %s\n",
1856                                 param->value);
1857                 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1858                         ops->DefaultTime2Wait =
1859                                 simple_strtoul(param->value, &tmpptr, 0);
1860                         pr_debug("DefaultTime2Wait:             %s\n",
1861                                 param->value);
1862                 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
1863                         ops->DefaultTime2Retain =
1864                                 simple_strtoul(param->value, &tmpptr, 0);
1865                         pr_debug("DefaultTime2Retain:           %s\n",
1866                                 param->value);
1867                 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
1868                         ops->MaxOutstandingR2T =
1869                                 simple_strtoul(param->value, &tmpptr, 0);
1870                         pr_debug("MaxOutstandingR2T:            %s\n",
1871                                 param->value);
1872                 } else if (!strcmp(param->name, DATAPDUINORDER)) {
1873                         ops->DataPDUInOrder = !strcmp(param->value, YES);
1874                         pr_debug("DataPDUInOrder:               %s\n",
1875                                 param->value);
1876                 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
1877                         ops->DataSequenceInOrder = !strcmp(param->value, YES);
1878                         pr_debug("DataSequenceInOrder:          %s\n",
1879                                 param->value);
1880                 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
1881                         ops->ErrorRecoveryLevel =
1882                                 simple_strtoul(param->value, &tmpptr, 0);
1883                         pr_debug("ErrorRecoveryLevel:           %s\n",
1884                                 param->value);
1885                 } else if (!strcmp(param->name, SESSIONTYPE)) {
1886                         ops->SessionType = !strcmp(param->value, DISCOVERY);
1887                         pr_debug("SessionType:                  %s\n",
1888                                 param->value);
1889                 }
1890         }
1891         pr_debug("----------------------------------------------------"
1892                         "--------------\n");
1893
1894 }