drivers/target/iscsi/iscsi_target_parameters.c

   1 /*******************************************************************************
   2  * This file contains main functions related to iSCSI Parameter negotiation.
   3  *
   4  * (c) Copyright 2007-2013 Datera, Inc.
   5  *
   6  * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  ******************************************************************************/
  18
  19 #include <linux/slab.h>
  20
  21 #include <target/iscsi/iscsi_target_core.h>
  22 #include "iscsi_target_util.h"
  23 #include "iscsi_target_parameters.h"
  24
  25 int iscsi_login_rx_data(
  26         struct iscsi_conn *conn,
  27         char *buf,
  28         int length)
  29 {
  30         int rx_got;
  31         struct kvec iov;
  32
  33         memset(&iov, 0, sizeof(struct kvec));
  34         iov.iov_len     = length;
  35         iov.iov_base    = buf;
  36
  37         rx_got = rx_data(conn, &iov, 1, length);
  38         if (rx_got != length) {
  39                 pr_err("rx_data returned %d, expecting %d.\n",
  40                                 rx_got, length);
  41                 return -1;
  42         }
  43
  44         return 0 ;
  45 }
  46
  47 int iscsi_login_tx_data(
  48         struct iscsi_conn *conn,
  49         char *pdu_buf,
  50         char *text_buf,
  51         int text_length)
  52 {
  53         int length, tx_sent, iov_cnt = 1;
  54         struct kvec iov[2];
  55
  56         length = (ISCSI_HDR_LEN + text_length);
  57
  58         memset(&iov[0], 0, 2 * sizeof(struct kvec));
  59         iov[0].iov_len          = ISCSI_HDR_LEN;
  60         iov[0].iov_base         = pdu_buf;
  61
  62         if (text_buf && text_length) {
  63                 iov[1].iov_len  = text_length;
  64                 iov[1].iov_base = text_buf;
  65                 iov_cnt++;
  66         }
  67
  68         tx_sent = tx_data(conn, &iov[0], iov_cnt, length);
  69         if (tx_sent != length) {
  70                 pr_err("tx_data returned %d, expecting %d.\n",
  71                                 tx_sent, length);
  72                 return -1;
  73         }
  74
  75         return 0;
  76 }
  77
  78 void iscsi_dump_conn_ops(struct iscsi_conn_ops *conn_ops)
  79 {
  80         pr_debug("HeaderDigest: %s\n", (conn_ops->HeaderDigest) ?
  81                                 "CRC32C" : "None");
  82         pr_debug("DataDigest: %s\n", (conn_ops->DataDigest) ?
  83                                 "CRC32C" : "None");
  84         pr_debug("MaxRecvDataSegmentLength: %u\n",
  85                                 conn_ops->MaxRecvDataSegmentLength);
  86 }
  87
  88 void iscsi_dump_sess_ops(struct iscsi_sess_ops *sess_ops)
  89 {
  90         pr_debug("InitiatorName: %s\n", sess_ops->InitiatorName);
  91         pr_debug("InitiatorAlias: %s\n", sess_ops->InitiatorAlias);
  92         pr_debug("TargetName: %s\n", sess_ops->TargetName);
  93         pr_debug("TargetAlias: %s\n", sess_ops->TargetAlias);
  94         pr_debug("TargetPortalGroupTag: %hu\n",
  95                         sess_ops->TargetPortalGroupTag);
  96         pr_debug("MaxConnections: %hu\n", sess_ops->MaxConnections);
  97         pr_debug("InitialR2T: %s\n",
  98                         (sess_ops->InitialR2T) ? "Yes" : "No");
  99         pr_debug("ImmediateData: %s\n", (sess_ops->ImmediateData) ?
 100                         "Yes" : "No");
 101         pr_debug("MaxBurstLength: %u\n", sess_ops->MaxBurstLength);
 102         pr_debug("FirstBurstLength: %u\n", sess_ops->FirstBurstLength);
 103         pr_debug("DefaultTime2Wait: %hu\n", sess_ops->DefaultTime2Wait);
 104         pr_debug("DefaultTime2Retain: %hu\n",
 105                         sess_ops->DefaultTime2Retain);
 106         pr_debug("MaxOutstandingR2T: %hu\n",
 107                         sess_ops->MaxOutstandingR2T);
 108         pr_debug("DataPDUInOrder: %s\n",
 109                         (sess_ops->DataPDUInOrder) ? "Yes" : "No");
 110         pr_debug("DataSequenceInOrder: %s\n",
 111                         (sess_ops->DataSequenceInOrder) ? "Yes" : "No");
 112         pr_debug("ErrorRecoveryLevel: %hu\n",
 113                         sess_ops->ErrorRecoveryLevel);
 114         pr_debug("SessionType: %s\n", (sess_ops->SessionType) ?
 115                         "Discovery" : "Normal");
 116 }
 117
 118 void iscsi_print_params(struct iscsi_param_list *param_list)
 119 {
 120         struct iscsi_param *param;
 121
 122         list_for_each_entry(param, &param_list->param_list, p_list)
 123                 pr_debug("%s: %s\n", param->name, param->value);
 124 }
 125
 126 static struct iscsi_param *iscsi_set_default_param(struct iscsi_param_list *param_list,
 127                 char *name, char *value, u8 phase, u8 scope, u8 sender,
 128                 u16 type_range, u8 use)
 129 {
 130         struct iscsi_param *param = NULL;
 131
 132         param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL);
 133         if (!param) {
 134                 pr_err("Unable to allocate memory for parameter.\n");
 135                 goto out;
 136         }
 137         INIT_LIST_HEAD(&param->p_list);
 138
 139         param->name = kstrdup(name, GFP_KERNEL);
 140         if (!param->name) {
 141                 pr_err("Unable to allocate memory for parameter name.\n");
 142                 goto out;
 143         }
 144
 145         param->value = kstrdup(value, GFP_KERNEL);
 146         if (!param->value) {
 147                 pr_err("Unable to allocate memory for parameter value.\n");
 148                 goto out;
 149         }
 150
 151         param->phase            = phase;
 152         param->scope            = scope;
 153         param->sender           = sender;
 154         param->use              = use;
 155         param->type_range       = type_range;
 156
 157         switch (param->type_range) {
 158         case TYPERANGE_BOOL_AND:
 159                 param->type = TYPE_BOOL_AND;
 160                 break;
 161         case TYPERANGE_BOOL_OR:
 162                 param->type = TYPE_BOOL_OR;
 163                 break;
 164         case TYPERANGE_0_TO_2:
 165         case TYPERANGE_0_TO_3600:
 166         case TYPERANGE_0_TO_32767:
 167         case TYPERANGE_0_TO_65535:
 168         case TYPERANGE_1_TO_65535:
 169         case TYPERANGE_2_TO_3600:
 170         case TYPERANGE_512_TO_16777215:
 171                 param->type = TYPE_NUMBER;
 172                 break;
 173         case TYPERANGE_AUTH:
 174         case TYPERANGE_DIGEST:
 175                 param->type = TYPE_VALUE_LIST | TYPE_STRING;
 176                 break;
 177         case TYPERANGE_ISCSINAME:
 178         case TYPERANGE_SESSIONTYPE:
 179         case TYPERANGE_TARGETADDRESS:
 180         case TYPERANGE_UTF8:
 181                 param->type = TYPE_STRING;
 182                 break;
 183         default:
 184                 pr_err("Unknown type_range 0x%02x\n",
 185                                 param->type_range);
 186                 goto out;
 187         }
 188         list_add_tail(&param->p_list, &param_list->param_list);
 189
 190         return param;
 191 out:
 192         if (param) {
 193                 kfree(param->value);
 194                 kfree(param->name);
 195                 kfree(param);
 196         }
 197
 198         return NULL;
 199 }
 200
 201 /* #warning Add extension keys */
 202 int iscsi_create_default_params(struct iscsi_param_list **param_list_ptr)
 203 {
 204         struct iscsi_param *param = NULL;
 205         struct iscsi_param_list *pl;
 206
 207         pl = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL);
 208         if (!pl) {
 209                 pr_err("Unable to allocate memory for"
 210                                 " struct iscsi_param_list.\n");
 211                 return -1 ;
 212         }
 213         INIT_LIST_HEAD(&pl->param_list);
 214         INIT_LIST_HEAD(&pl->extra_response_list);
 215
 216         /*
 217          * The format for setting the initial parameter definitions are:
 218          *
 219          * Parameter name:
 220          * Initial value:
 221          * Allowable phase:
 222          * Scope:
 223          * Allowable senders:
 224          * Typerange:
 225          * Use:
 226          */
 227         param = iscsi_set_default_param(pl, AUTHMETHOD, INITIAL_AUTHMETHOD,
 228                         PHASE_SECURITY, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 229                         TYPERANGE_AUTH, USE_INITIAL_ONLY);
 230         if (!param)
 231                 goto out;
 232
 233         param = iscsi_set_default_param(pl, HEADERDIGEST, INITIAL_HEADERDIGEST,
 234                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 235                         TYPERANGE_DIGEST, USE_INITIAL_ONLY);
 236         if (!param)
 237                 goto out;
 238
 239         param = iscsi_set_default_param(pl, DATADIGEST, INITIAL_DATADIGEST,
 240                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 241                         TYPERANGE_DIGEST, USE_INITIAL_ONLY);
 242         if (!param)
 243                 goto out;
 244
 245         param = iscsi_set_default_param(pl, MAXCONNECTIONS,
 246                         INITIAL_MAXCONNECTIONS, PHASE_OPERATIONAL,
 247                         SCOPE_SESSION_WIDE, SENDER_BOTH,
 248                         TYPERANGE_1_TO_65535, USE_LEADING_ONLY);
 249         if (!param)
 250                 goto out;
 251
 252         param = iscsi_set_default_param(pl, SENDTARGETS, INITIAL_SENDTARGETS,
 253                         PHASE_FFP0, SCOPE_SESSION_WIDE, SENDER_INITIATOR,
 254                         TYPERANGE_UTF8, 0);
 255         if (!param)
 256                 goto out;
 257
 258         param = iscsi_set_default_param(pl, TARGETNAME, INITIAL_TARGETNAME,
 259                         PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_BOTH,
 260                         TYPERANGE_ISCSINAME, USE_ALL);
 261         if (!param)
 262                 goto out;
 263
 264         param = iscsi_set_default_param(pl, INITIATORNAME,
 265                         INITIAL_INITIATORNAME, PHASE_DECLARATIVE,
 266                         SCOPE_SESSION_WIDE, SENDER_INITIATOR,
 267                         TYPERANGE_ISCSINAME, USE_INITIAL_ONLY);
 268         if (!param)
 269                 goto out;
 270
 271         param = iscsi_set_default_param(pl, TARGETALIAS, INITIAL_TARGETALIAS,
 272                         PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_TARGET,
 273                         TYPERANGE_UTF8, USE_ALL);
 274         if (!param)
 275                 goto out;
 276
 277         param = iscsi_set_default_param(pl, INITIATORALIAS,
 278                         INITIAL_INITIATORALIAS, PHASE_DECLARATIVE,
 279                         SCOPE_SESSION_WIDE, SENDER_INITIATOR, TYPERANGE_UTF8,
 280                         USE_ALL);
 281         if (!param)
 282                 goto out;
 283
 284         param = iscsi_set_default_param(pl, TARGETADDRESS,
 285                         INITIAL_TARGETADDRESS, PHASE_DECLARATIVE,
 286                         SCOPE_SESSION_WIDE, SENDER_TARGET,
 287                         TYPERANGE_TARGETADDRESS, USE_ALL);
 288         if (!param)
 289                 goto out;
 290
 291         param = iscsi_set_default_param(pl, TARGETPORTALGROUPTAG,
 292                         INITIAL_TARGETPORTALGROUPTAG,
 293                         PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_TARGET,
 294                         TYPERANGE_0_TO_65535, USE_INITIAL_ONLY);
 295         if (!param)
 296                 goto out;
 297
 298         param = iscsi_set_default_param(pl, INITIALR2T, INITIAL_INITIALR2T,
 299                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
 300                         TYPERANGE_BOOL_OR, USE_LEADING_ONLY);
 301         if (!param)
 302                 goto out;
 303
 304         param = iscsi_set_default_param(pl, IMMEDIATEDATA,
 305                         INITIAL_IMMEDIATEDATA, PHASE_OPERATIONAL,
 306                         SCOPE_SESSION_WIDE, SENDER_BOTH, TYPERANGE_BOOL_AND,
 307                         USE_LEADING_ONLY);
 308         if (!param)
 309                 goto out;
 310
 311         param = iscsi_set_default_param(pl, MAXXMITDATASEGMENTLENGTH,
 312                         INITIAL_MAXXMITDATASEGMENTLENGTH,
 313                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 314                         TYPERANGE_512_TO_16777215, USE_ALL);
 315         if (!param)
 316                 goto out;
 317
 318         param = iscsi_set_default_param(pl, MAXRECVDATASEGMENTLENGTH,
 319                         INITIAL_MAXRECVDATASEGMENTLENGTH,
 320                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 321                         TYPERANGE_512_TO_16777215, USE_ALL);
 322         if (!param)
 323                 goto out;
 324
 325         param = iscsi_set_default_param(pl, MAXBURSTLENGTH,
 326                         INITIAL_MAXBURSTLENGTH, PHASE_OPERATIONAL,
 327                         SCOPE_SESSION_WIDE, SENDER_BOTH,
 328                         TYPERANGE_512_TO_16777215, USE_LEADING_ONLY);
 329         if (!param)
 330                 goto out;
 331
 332         param = iscsi_set_default_param(pl, FIRSTBURSTLENGTH,
 333                         INITIAL_FIRSTBURSTLENGTH,
 334                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
 335                         TYPERANGE_512_TO_16777215, USE_LEADING_ONLY);
 336         if (!param)
 337                 goto out;
 338
 339         param = iscsi_set_default_param(pl, DEFAULTTIME2WAIT,
 340                         INITIAL_DEFAULTTIME2WAIT,
 341                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
 342                         TYPERANGE_0_TO_3600, USE_LEADING_ONLY);
 343         if (!param)
 344                 goto out;
 345
 346         param = iscsi_set_default_param(pl, DEFAULTTIME2RETAIN,
 347                         INITIAL_DEFAULTTIME2RETAIN,
 348                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
 349                         TYPERANGE_0_TO_3600, USE_LEADING_ONLY);
 350         if (!param)
 351                 goto out;
 352
 353         param = iscsi_set_default_param(pl, MAXOUTSTANDINGR2T,
 354                         INITIAL_MAXOUTSTANDINGR2T,
 355                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
 356                         TYPERANGE_1_TO_65535, USE_LEADING_ONLY);
 357         if (!param)
 358                 goto out;
 359
 360         param = iscsi_set_default_param(pl, DATAPDUINORDER,
 361                         INITIAL_DATAPDUINORDER, PHASE_OPERATIONAL,
 362                         SCOPE_SESSION_WIDE, SENDER_BOTH, TYPERANGE_BOOL_OR,
 363                         USE_LEADING_ONLY);
 364         if (!param)
 365                 goto out;
 366
 367         param = iscsi_set_default_param(pl, DATASEQUENCEINORDER,
 368                         INITIAL_DATASEQUENCEINORDER,
 369                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
 370                         TYPERANGE_BOOL_OR, USE_LEADING_ONLY);
 371         if (!param)
 372                 goto out;
 373
 374         param = iscsi_set_default_param(pl, ERRORRECOVERYLEVEL,
 375                         INITIAL_ERRORRECOVERYLEVEL,
 376                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
 377                         TYPERANGE_0_TO_2, USE_LEADING_ONLY);
 378         if (!param)
 379                 goto out;
 380
 381         param = iscsi_set_default_param(pl, SESSIONTYPE, INITIAL_SESSIONTYPE,
 382                         PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_INITIATOR,
 383                         TYPERANGE_SESSIONTYPE, USE_LEADING_ONLY);
 384         if (!param)
 385                 goto out;
 386
 387         param = iscsi_set_default_param(pl, IFMARKER, INITIAL_IFMARKER,
 388                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 389                         TYPERANGE_BOOL_AND, USE_INITIAL_ONLY);
 390         if (!param)
 391                 goto out;
 392
 393         param = iscsi_set_default_param(pl, OFMARKER, INITIAL_OFMARKER,
 394                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 395                         TYPERANGE_BOOL_AND, USE_INITIAL_ONLY);
 396         if (!param)
 397                 goto out;
 398
 399         param = iscsi_set_default_param(pl, IFMARKINT, INITIAL_IFMARKINT,
 400                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 401                         TYPERANGE_UTF8, USE_INITIAL_ONLY);
 402         if (!param)
 403                 goto out;
 404
 405         param = iscsi_set_default_param(pl, OFMARKINT, INITIAL_OFMARKINT,
 406                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 407                         TYPERANGE_UTF8, USE_INITIAL_ONLY);
 408         if (!param)
 409                 goto out;
 410         /*
 411          * Extra parameters for ISER from RFC-5046
 412          */
 413         param = iscsi_set_default_param(pl, RDMAEXTENSIONS, INITIAL_RDMAEXTENSIONS,
 414                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
 415                         TYPERANGE_BOOL_AND, USE_LEADING_ONLY);
 416         if (!param)
 417                 goto out;
 418
 419         param = iscsi_set_default_param(pl, INITIATORRECVDATASEGMENTLENGTH,
 420                         INITIAL_INITIATORRECVDATASEGMENTLENGTH,
 421                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 422                         TYPERANGE_512_TO_16777215, USE_ALL);
 423         if (!param)
 424                 goto out;
 425
 426         param = iscsi_set_default_param(pl, TARGETRECVDATASEGMENTLENGTH,
 427                         INITIAL_TARGETRECVDATASEGMENTLENGTH,
 428                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
 429                         TYPERANGE_512_TO_16777215, USE_ALL);
 430         if (!param)
 431                 goto out;
 432
 433         *param_list_ptr = pl;
 434         return 0;
 435 out:
 436         iscsi_release_param_list(pl);
 437         return -1;
 438 }
 439
 440 int iscsi_set_keys_to_negotiate(
 441         struct iscsi_param_list *param_list,
 442         bool iser)
 443 {
 444         struct iscsi_param *param;
 445
 446         param_list->iser = iser;
 447
 448         list_for_each_entry(param, &param_list->param_list, p_list) {
 449                 param->state = 0;
 450                 if (!strcmp(param->name, AUTHMETHOD)) {
 451                         SET_PSTATE_NEGOTIATE(param);
 452                 } else if (!strcmp(param->name, HEADERDIGEST)) {
 453                         if (!iser)
 454                                 SET_PSTATE_NEGOTIATE(param);
 455                 } else if (!strcmp(param->name, DATADIGEST)) {
 456                         if (!iser)
 457                                 SET_PSTATE_NEGOTIATE(param);
 458                 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
 459                         SET_PSTATE_NEGOTIATE(param);
 460                 } else if (!strcmp(param->name, TARGETNAME)) {
 461                         continue;
 462                 } else if (!strcmp(param->name, INITIATORNAME)) {
 463                         continue;
 464                 } else if (!strcmp(param->name, TARGETALIAS)) {
 465                         if (param->value)
 466                                 SET_PSTATE_NEGOTIATE(param);
 467                 } else if (!strcmp(param->name, INITIATORALIAS)) {
 468                         continue;
 469                 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
 470                         SET_PSTATE_NEGOTIATE(param);
 471                 } else if (!strcmp(param->name, INITIALR2T)) {
 472                         SET_PSTATE_NEGOTIATE(param);
 473                 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
 474                         SET_PSTATE_NEGOTIATE(param);
 475                 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
 476                         if (!iser)
 477                                 SET_PSTATE_NEGOTIATE(param);
 478                 } else if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) {
 479                         continue;
 480                 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
 481                         SET_PSTATE_NEGOTIATE(param);
 482                 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
 483                         SET_PSTATE_NEGOTIATE(param);
 484                 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
 485                         SET_PSTATE_NEGOTIATE(param);
 486                 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
 487                         SET_PSTATE_NEGOTIATE(param);
 488                 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
 489                         SET_PSTATE_NEGOTIATE(param);
 490                 } else if (!strcmp(param->name, DATAPDUINORDER)) {
 491                         SET_PSTATE_NEGOTIATE(param);
 492                 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
 493                         SET_PSTATE_NEGOTIATE(param);
 494                 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
 495                         SET_PSTATE_NEGOTIATE(param);
 496                 } else if (!strcmp(param->name, SESSIONTYPE)) {
 497                         SET_PSTATE_NEGOTIATE(param);
 498                 } else if (!strcmp(param->name, IFMARKER)) {
 499                         SET_PSTATE_NEGOTIATE(param);
 500                 } else if (!strcmp(param->name, OFMARKER)) {
 501                         SET_PSTATE_NEGOTIATE(param);
 502                 } else if (!strcmp(param->name, IFMARKINT)) {
 503                         SET_PSTATE_REJECT(param);
 504                 } else if (!strcmp(param->name, OFMARKINT)) {
 505                         SET_PSTATE_REJECT(param);
 506                 } else if (!strcmp(param->name, RDMAEXTENSIONS)) {
 507                         if (iser)
 508                                 SET_PSTATE_NEGOTIATE(param);
 509                 } else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH)) {
 510                         if (iser)
 511                                 SET_PSTATE_NEGOTIATE(param);
 512                 } else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH)) {
 513                         if (iser)
 514                                 SET_PSTATE_NEGOTIATE(param);
 515                 }
 516         }
 517
 518         return 0;
 519 }
 520
 521 int iscsi_set_keys_irrelevant_for_discovery(
 522         struct iscsi_param_list *param_list)
 523 {
 524         struct iscsi_param *param;
 525
 526         list_for_each_entry(param, &param_list->param_list, p_list) {
 527                 if (!strcmp(param->name, MAXCONNECTIONS))
 528                         param->state &= ~PSTATE_NEGOTIATE;
 529                 else if (!strcmp(param->name, INITIALR2T))
 530                         param->state &= ~PSTATE_NEGOTIATE;
 531                 else if (!strcmp(param->name, IMMEDIATEDATA))
 532                         param->state &= ~PSTATE_NEGOTIATE;
 533                 else if (!strcmp(param->name, MAXBURSTLENGTH))
 534                         param->state &= ~PSTATE_NEGOTIATE;
 535                 else if (!strcmp(param->name, FIRSTBURSTLENGTH))
 536                         param->state &= ~PSTATE_NEGOTIATE;
 537                 else if (!strcmp(param->name, MAXOUTSTANDINGR2T))
 538                         param->state &= ~PSTATE_NEGOTIATE;
 539                 else if (!strcmp(param->name, DATAPDUINORDER))
 540                         param->state &= ~PSTATE_NEGOTIATE;
 541                 else if (!strcmp(param->name, DATASEQUENCEINORDER))
 542                         param->state &= ~PSTATE_NEGOTIATE;
 543                 else if (!strcmp(param->name, ERRORRECOVERYLEVEL))
 544                         param->state &= ~PSTATE_NEGOTIATE;
 545                 else if (!strcmp(param->name, DEFAULTTIME2WAIT))
 546                         param->state &= ~PSTATE_NEGOTIATE;
 547                 else if (!strcmp(param->name, DEFAULTTIME2RETAIN))
 548                         param->state &= ~PSTATE_NEGOTIATE;
 549                 else if (!strcmp(param->name, IFMARKER))
 550                         param->state &= ~PSTATE_NEGOTIATE;
 551                 else if (!strcmp(param->name, OFMARKER))
 552                         param->state &= ~PSTATE_NEGOTIATE;
 553                 else if (!strcmp(param->name, IFMARKINT))
 554                         param->state &= ~PSTATE_NEGOTIATE;
 555                 else if (!strcmp(param->name, OFMARKINT))
 556                         param->state &= ~PSTATE_NEGOTIATE;
 557                 else if (!strcmp(param->name, RDMAEXTENSIONS))
 558                         param->state &= ~PSTATE_NEGOTIATE;
 559                 else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH))
 560                         param->state &= ~PSTATE_NEGOTIATE;
 561                 else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH))
 562                         param->state &= ~PSTATE_NEGOTIATE;
 563         }
 564
 565         return 0;
 566 }
 567
 568 int iscsi_copy_param_list(
 569         struct iscsi_param_list **dst_param_list,
 570         struct iscsi_param_list *src_param_list,
 571         int leading)
 572 {
 573         struct iscsi_param *param = NULL;
 574         struct iscsi_param *new_param = NULL;
 575         struct iscsi_param_list *param_list = NULL;
 576
 577         param_list = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL);
 578         if (!param_list) {
 579                 pr_err("Unable to allocate memory for struct iscsi_param_list.\n");
 580                 return -1;
 581         }
 582         INIT_LIST_HEAD(&param_list->param_list);
 583         INIT_LIST_HEAD(&param_list->extra_response_list);
 584
 585         list_for_each_entry(param, &src_param_list->param_list, p_list) {
 586                 if (!leading && (param->scope & SCOPE_SESSION_WIDE)) {
 587                         if ((strcmp(param->name, "TargetName") != 0) &&
 588                             (strcmp(param->name, "InitiatorName") != 0) &&
 589                             (strcmp(param->name, "TargetPortalGroupTag") != 0))
 590                                 continue;
 591                 }
 592
 593                 new_param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL);
 594                 if (!new_param) {
 595                         pr_err("Unable to allocate memory for struct iscsi_param.\n");
 596                         goto err_out;
 597                 }
 598
 599                 new_param->name = kstrdup(param->name, GFP_KERNEL);
 600                 new_param->value = kstrdup(param->value, GFP_KERNEL);
 601                 if (!new_param->value || !new_param->name) {
 602                         kfree(new_param->value);
 603                         kfree(new_param->name);
 604                         kfree(new_param);
 605                         pr_err("Unable to allocate memory for parameter name/value.\n");
 606                         goto err_out;
 607                 }
 608
 609                 new_param->set_param = param->set_param;
 610                 new_param->phase = param->phase;
 611                 new_param->scope = param->scope;
 612                 new_param->sender = param->sender;
 613                 new_param->type = param->type;
 614                 new_param->use = param->use;
 615                 new_param->type_range = param->type_range;
 616
 617                 list_add_tail(&new_param->p_list, &param_list->param_list);
 618         }
 619
 620         if (!list_empty(&param_list->param_list)) {
 621                 *dst_param_list = param_list;
 622         } else {
 623                 pr_err("No parameters allocated.\n");
 624                 goto err_out;
 625         }
 626
 627         return 0;
 628
 629 err_out:
 630         iscsi_release_param_list(param_list);
 631         return -1;
 632 }
 633
 634 static void iscsi_release_extra_responses(struct iscsi_param_list *param_list)
 635 {
 636         struct iscsi_extra_response *er, *er_tmp;
 637
 638         list_for_each_entry_safe(er, er_tmp, &param_list->extra_response_list,
 639                         er_list) {
 640                 list_del(&er->er_list);
 641                 kfree(er);
 642         }
 643 }
 644
 645 void iscsi_release_param_list(struct iscsi_param_list *param_list)
 646 {
 647         struct iscsi_param *param, *param_tmp;
 648
 649         list_for_each_entry_safe(param, param_tmp, &param_list->param_list,
 650                         p_list) {
 651                 list_del(&param->p_list);
 652
 653                 kfree(param->name);
 654                 kfree(param->value);
 655                 kfree(param);
 656         }
 657
 658         iscsi_release_extra_responses(param_list);
 659
 660         kfree(param_list);
 661 }
 662
 663 struct iscsi_param *iscsi_find_param_from_key(
 664         char *key,
 665         struct iscsi_param_list *param_list)
 666 {
 667         struct iscsi_param *param;
 668
 669         if (!key || !param_list) {
 670                 pr_err("Key or parameter list pointer is NULL.\n");
 671                 return NULL;
 672         }
 673
 674         list_for_each_entry(param, &param_list->param_list, p_list) {
 675                 if (!strcmp(key, param->name))
 676                         return param;
 677         }
 678
 679         pr_err("Unable to locate key \"%s\".\n", key);
 680         return NULL;
 681 }
 682
 683 int iscsi_extract_key_value(char *textbuf, char **key, char **value)
 684 {
 685         *value = strchr(textbuf, '=');
 686         if (!*value) {
 687                 pr_err("Unable to locate \"=\" separator for key,"
 688                                 " ignoring request.\n");
 689                 return -1;
 690         }
 691
 692         *key = textbuf;
 693         **value = '\0';
 694         *value = *value + 1;
 695
 696         return 0;
 697 }
 698
 699 int iscsi_update_param_value(struct iscsi_param *param, char *value)
 700 {
 701         kfree(param->value);
 702
 703         param->value = kstrdup(value, GFP_KERNEL);
 704         if (!param->value) {
 705                 pr_err("Unable to allocate memory for value.\n");
 706                 return -ENOMEM;
 707         }
 708
 709         pr_debug("iSCSI Parameter updated to %s=%s\n",
 710                         param->name, param->value);
 711         return 0;
 712 }
 713
 714 static int iscsi_add_notunderstood_response(
 715         char *key,
 716         char *value,
 717         struct iscsi_param_list *param_list)
 718 {
 719         struct iscsi_extra_response *extra_response;
 720
 721         if (strlen(value) > VALUE_MAXLEN) {
 722                 pr_err("Value for notunderstood key \"%s\" exceeds %d,"
 723                         " protocol error.\n", key, VALUE_MAXLEN);
 724                 return -1;
 725         }
 726
 727         extra_response = kzalloc(sizeof(struct iscsi_extra_response), GFP_KERNEL);
 728         if (!extra_response) {
 729                 pr_err("Unable to allocate memory for"
 730                         " struct iscsi_extra_response.\n");
 731                 return -1;
 732         }
 733         INIT_LIST_HEAD(&extra_response->er_list);
 734
 735         strlcpy(extra_response->key, key, sizeof(extra_response->key));
 736         strlcpy(extra_response->value, NOTUNDERSTOOD,
 737                 sizeof(extra_response->value));
 738
 739         list_add_tail(&extra_response->er_list,
 740                         &param_list->extra_response_list);
 741         return 0;
 742 }
 743
 744 static int iscsi_check_for_auth_key(char *key)
 745 {
 746         /*
 747          * RFC 1994
 748          */
 749         if (!strcmp(key, "CHAP_A") || !strcmp(key, "CHAP_I") ||
 750             !strcmp(key, "CHAP_C") || !strcmp(key, "CHAP_N") ||
 751             !strcmp(key, "CHAP_R"))
 752                 return 1;
 753
 754         /*
 755          * RFC 2945
 756          */
 757         if (!strcmp(key, "SRP_U") || !strcmp(key, "SRP_N") ||
 758             !strcmp(key, "SRP_g") || !strcmp(key, "SRP_s") ||
 759             !strcmp(key, "SRP_A") || !strcmp(key, "SRP_B") ||
 760             !strcmp(key, "SRP_M") || !strcmp(key, "SRP_HM"))
 761                 return 1;
 762
 763         return 0;
 764 }
 765
 766 static void iscsi_check_proposer_for_optional_reply(struct iscsi_param *param)
 767 {
 768         if (IS_TYPE_BOOL_AND(param)) {
 769                 if (!strcmp(param->value, NO))
 770                         SET_PSTATE_REPLY_OPTIONAL(param);
 771         } else if (IS_TYPE_BOOL_OR(param)) {
 772                 if (!strcmp(param->value, YES))
 773                         SET_PSTATE_REPLY_OPTIONAL(param);
 774                  /*
 775                   * Required for gPXE iSCSI boot client
 776                   */
 777                 if (!strcmp(param->name, IMMEDIATEDATA))
 778                         SET_PSTATE_REPLY_OPTIONAL(param);
 779         } else if (IS_TYPE_NUMBER(param)) {
 780                 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH))
 781                         SET_PSTATE_REPLY_OPTIONAL(param);
 782                 /*
 783                  * The GlobalSAN iSCSI Initiator for MacOSX does
 784                  * not respond to MaxBurstLength, FirstBurstLength,
 785                  * DefaultTime2Wait or DefaultTime2Retain parameter keys.
 786                  * So, we set them to 'reply optional' here, and assume the
 787                  * the defaults from iscsi_parameters.h if the initiator
 788                  * is not RFC compliant and the keys are not negotiated.
 789                  */
 790                 if (!strcmp(param->name, MAXBURSTLENGTH))
 791                         SET_PSTATE_REPLY_OPTIONAL(param);
 792                 if (!strcmp(param->name, FIRSTBURSTLENGTH))
 793                         SET_PSTATE_REPLY_OPTIONAL(param);
 794                 if (!strcmp(param->name, DEFAULTTIME2WAIT))
 795                         SET_PSTATE_REPLY_OPTIONAL(param);
 796                 if (!strcmp(param->name, DEFAULTTIME2RETAIN))
 797                         SET_PSTATE_REPLY_OPTIONAL(param);
 798                 /*
 799                  * Required for gPXE iSCSI boot client
 800                  */
 801                 if (!strcmp(param->name, MAXCONNECTIONS))
 802                         SET_PSTATE_REPLY_OPTIONAL(param);
 803         } else if (IS_PHASE_DECLARATIVE(param))
 804                 SET_PSTATE_REPLY_OPTIONAL(param);
 805 }
 806
 807 static int iscsi_check_boolean_value(struct iscsi_param *param, char *value)
 808 {
 809         if (strcmp(value, YES) && strcmp(value, NO)) {
 810                 pr_err("Illegal value for \"%s\", must be either"
 811                         " \"%s\" or \"%s\".\n", param->name, YES, NO);
 812                 return -1;
 813         }
 814
 815         return 0;
 816 }
 817
 818 static int iscsi_check_numerical_value(struct iscsi_param *param, char *value_ptr)
 819 {
 820         char *tmpptr;
 821         int value = 0;
 822
 823         value = simple_strtoul(value_ptr, &tmpptr, 0);
 824
 825         if (IS_TYPERANGE_0_TO_2(param)) {
 826                 if ((value < 0) || (value > 2)) {
 827                         pr_err("Illegal value for \"%s\", must be"
 828                                 " between 0 and 2.\n", param->name);
 829                         return -1;
 830                 }
 831                 return 0;
 832         }
 833         if (IS_TYPERANGE_0_TO_3600(param)) {
 834                 if ((value < 0) || (value > 3600)) {
 835                         pr_err("Illegal value for \"%s\", must be"
 836                                 " between 0 and 3600.\n", param->name);
 837                         return -1;
 838                 }
 839                 return 0;
 840         }
 841         if (IS_TYPERANGE_0_TO_32767(param)) {
 842                 if ((value < 0) || (value > 32767)) {
 843                         pr_err("Illegal value for \"%s\", must be"
 844                                 " between 0 and 32767.\n", param->name);
 845                         return -1;
 846                 }
 847                 return 0;
 848         }
 849         if (IS_TYPERANGE_0_TO_65535(param)) {
 850                 if ((value < 0) || (value > 65535)) {
 851                         pr_err("Illegal value for \"%s\", must be"
 852                                 " between 0 and 65535.\n", param->name);
 853                         return -1;
 854                 }
 855                 return 0;
 856         }
 857         if (IS_TYPERANGE_1_TO_65535(param)) {
 858                 if ((value < 1) || (value > 65535)) {
 859                         pr_err("Illegal value for \"%s\", must be"
 860                                 " between 1 and 65535.\n", param->name);
 861                         return -1;
 862                 }
 863                 return 0;
 864         }
 865         if (IS_TYPERANGE_2_TO_3600(param)) {
 866                 if ((value < 2) || (value > 3600)) {
 867                         pr_err("Illegal value for \"%s\", must be"
 868                                 " between 2 and 3600.\n", param->name);
 869                         return -1;
 870                 }
 871                 return 0;
 872         }
 873         if (IS_TYPERANGE_512_TO_16777215(param)) {
 874                 if ((value < 512) || (value > 16777215)) {
 875                         pr_err("Illegal value for \"%s\", must be"
 876                                 " between 512 and 16777215.\n", param->name);
 877                         return -1;
 878                 }
 879                 return 0;
 880         }
 881
 882         return 0;
 883 }
 884
 885 static int iscsi_check_string_or_list_value(struct iscsi_param *param, char *value)
 886 {
 887         if (IS_PSTATE_PROPOSER(param))
 888                 return 0;
 889
 890         if (IS_TYPERANGE_AUTH_PARAM(param)) {
 891                 if (strcmp(value, KRB5) && strcmp(value, SPKM1) &&
 892                     strcmp(value, SPKM2) && strcmp(value, SRP) &&
 893                     strcmp(value, CHAP) && strcmp(value, NONE)) {
 894                         pr_err("Illegal value for \"%s\", must be"
 895                                 " \"%s\", \"%s\", \"%s\", \"%s\", \"%s\""
 896                                 " or \"%s\".\n", param->name, KRB5,
 897                                         SPKM1, SPKM2, SRP, CHAP, NONE);
 898                         return -1;
 899                 }
 900         }
 901         if (IS_TYPERANGE_DIGEST_PARAM(param)) {
 902                 if (strcmp(value, CRC32C) && strcmp(value, NONE)) {
 903                         pr_err("Illegal value for \"%s\", must be"
 904                                 " \"%s\" or \"%s\".\n", param->name,
 905                                         CRC32C, NONE);
 906                         return -1;
 907                 }
 908         }
 909         if (IS_TYPERANGE_SESSIONTYPE(param)) {
 910                 if (strcmp(value, DISCOVERY) && strcmp(value, NORMAL)) {
 911                         pr_err("Illegal value for \"%s\", must be"
 912                                 " \"%s\" or \"%s\".\n", param->name,
 913                                         DISCOVERY, NORMAL);
 914                         return -1;
 915                 }
 916         }
 917
 918         return 0;
 919 }
 920
 921 static char *iscsi_check_valuelist_for_support(
 922         struct iscsi_param *param,
 923         char *value)
 924 {
 925         char *tmp1 = NULL, *tmp2 = NULL;
 926         char *acceptor_values = NULL, *proposer_values = NULL;
 927
 928         acceptor_values = param->value;
 929         proposer_values = value;
 930
 931         do {
 932                 if (!proposer_values)
 933                         return NULL;
 934                 tmp1 = strchr(proposer_values, ',');
 935                 if (tmp1)
 936                         *tmp1 = '\0';
 937                 acceptor_values = param->value;
 938                 do {
 939                         if (!acceptor_values) {
 940                                 if (tmp1)
 941                                         *tmp1 = ',';
 942                                 return NULL;
 943                         }
 944                         tmp2 = strchr(acceptor_values, ',');
 945                         if (tmp2)
 946                                 *tmp2 = '\0';
 947                         if (!strcmp(acceptor_values, proposer_values)) {
 948                                 if (tmp2)
 949                                         *tmp2 = ',';
 950                                 goto out;
 951                         }
 952                         if (tmp2)
 953                                 *tmp2++ = ',';
 954
 955                         acceptor_values = tmp2;
 956                 } while (acceptor_values);
 957                 if (tmp1)
 958                         *tmp1++ = ',';
 959                 proposer_values = tmp1;
 960         } while (proposer_values);
 961
 962 out:
 963         return proposer_values;
 964 }
 965
 966 static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value,
 967                                 struct iscsi_conn *conn)
 968 {
 969         u8 acceptor_boolean_value = 0, proposer_boolean_value = 0;
 970         char *negotiated_value = NULL;
 971
 972         if (IS_PSTATE_ACCEPTOR(param)) {
 973                 pr_err("Received key \"%s\" twice, protocol error.\n",
 974                                 param->name);
 975                 return -1;
 976         }
 977
 978         if (IS_PSTATE_REJECT(param))
 979                 return 0;
 980
 981         if (IS_TYPE_BOOL_AND(param)) {
 982                 if (!strcmp(value, YES))
 983                         proposer_boolean_value = 1;
 984                 if (!strcmp(param->value, YES))
 985                         acceptor_boolean_value = 1;
 986                 if (acceptor_boolean_value && proposer_boolean_value)
 987                         do {} while (0);
 988                 else {
 989                         if (iscsi_update_param_value(param, NO) < 0)
 990                                 return -1;
 991                         if (!proposer_boolean_value)
 992                                 SET_PSTATE_REPLY_OPTIONAL(param);
 993                 }
 994         } else if (IS_TYPE_BOOL_OR(param)) {
 995                 if (!strcmp(value, YES))
 996                         proposer_boolean_value = 1;
 997                 if (!strcmp(param->value, YES))
 998                         acceptor_boolean_value = 1;
 999                 if (acceptor_boolean_value || proposer_boolean_value) {
1000                         if (iscsi_update_param_value(param, YES) < 0)
1001                                 return -1;
1002                         if (proposer_boolean_value)
1003                                 SET_PSTATE_REPLY_OPTIONAL(param);
1004                 }
1005         } else if (IS_TYPE_NUMBER(param)) {
1006                 char *tmpptr, buf[11];
1007                 u32 acceptor_value = simple_strtoul(param->value, &tmpptr, 0);
1008                 u32 proposer_value = simple_strtoul(value, &tmpptr, 0);
1009
1010                 memset(buf, 0, sizeof(buf));
1011
1012                 if (!strcmp(param->name, MAXCONNECTIONS) ||
1013                     !strcmp(param->name, MAXBURSTLENGTH) ||
1014                     !strcmp(param->name, FIRSTBURSTLENGTH) ||
1015                     !strcmp(param->name, MAXOUTSTANDINGR2T) ||
1016                     !strcmp(param->name, DEFAULTTIME2RETAIN) ||
1017                     !strcmp(param->name, ERRORRECOVERYLEVEL)) {
1018                         if (proposer_value > acceptor_value) {
1019                                 sprintf(buf, "%u", acceptor_value);
1020                                 if (iscsi_update_param_value(param,
1021                                                 &buf[0]) < 0)
1022                                         return -1;
1023                         } else {
1024                                 if (iscsi_update_param_value(param, value) < 0)
1025                                         return -1;
1026                         }
1027                 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1028                         if (acceptor_value > proposer_value) {
1029                                 sprintf(buf, "%u", acceptor_value);
1030                                 if (iscsi_update_param_value(param,
1031                                                 &buf[0]) < 0)
1032                                         return -1;
1033                         } else {
1034                                 if (iscsi_update_param_value(param, value) < 0)
1035                                         return -1;
1036                         }
1037                 } else {
1038                         if (iscsi_update_param_value(param, value) < 0)
1039                                 return -1;
1040                 }
1041
1042                 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1043                         struct iscsi_param *param_mxdsl;
1044                         unsigned long long tmp;
1045                         int rc;
1046
1047                         rc = kstrtoull(param->value, 0, &tmp);
1048                         if (rc < 0)
1049                                 return -1;
1050
1051                         conn->conn_ops->MaxRecvDataSegmentLength = tmp;
1052                         pr_debug("Saving op->MaxRecvDataSegmentLength from"
1053                                 " original initiator received value: %u\n",
1054                                 conn->conn_ops->MaxRecvDataSegmentLength);
1055
1056                         param_mxdsl = iscsi_find_param_from_key(
1057                                                 MAXXMITDATASEGMENTLENGTH,
1058                                                 conn->param_list);
1059                         if (!param_mxdsl)
1060                                 return -1;
1061
1062                         rc = iscsi_update_param_value(param,
1063                                                 param_mxdsl->value);
1064                         if (rc < 0)
1065                                 return -1;
1066
1067                         pr_debug("Updated %s to target MXDSL value: %s\n",
1068                                         param->name, param->value);
1069                 }
1070         } else if (IS_TYPE_VALUE_LIST(param)) {
1071                 negotiated_value = iscsi_check_valuelist_for_support(
1072                                         param, value);
1073                 if (!negotiated_value) {
1074                         pr_err("Proposer's value list \"%s\" contains"
1075                                 " no valid values from Acceptor's value list"
1076                                 " \"%s\".\n", value, param->value);
1077                         return -1;
1078                 }
1079                 if (iscsi_update_param_value(param, negotiated_value) < 0)
1080                         return -1;
1081         } else if (IS_PHASE_DECLARATIVE(param)) {
1082                 if (iscsi_update_param_value(param, value) < 0)
1083                         return -1;
1084                 SET_PSTATE_REPLY_OPTIONAL(param);
1085         }
1086
1087         return 0;
1088 }
1089
1090 static int iscsi_check_proposer_state(struct iscsi_param *param, char *value)
1091 {
1092         if (IS_PSTATE_RESPONSE_GOT(param)) {
1093                 pr_err("Received key \"%s\" twice, protocol error.\n",
1094                                 param->name);
1095                 return -1;
1096         }
1097
1098         if (IS_TYPE_VALUE_LIST(param)) {
1099                 char *comma_ptr = NULL, *tmp_ptr = NULL;
1100
1101                 comma_ptr = strchr(value, ',');
1102                 if (comma_ptr) {
1103                         pr_err("Illegal \",\" in response for \"%s\".\n",
1104                                         param->name);
1105                         return -1;
1106                 }
1107
1108                 tmp_ptr = iscsi_check_valuelist_for_support(param, value);
1109                 if (!tmp_ptr)
1110                         return -1;
1111         }
1112
1113         if (iscsi_update_param_value(param, value) < 0)
1114                 return -1;
1115
1116         return 0;
1117 }
1118
1119 static int iscsi_check_value(struct iscsi_param *param, char *value)
1120 {
1121         char *comma_ptr = NULL;
1122
1123         if (!strcmp(value, REJECT)) {
1124                 if (!strcmp(param->name, IFMARKINT) ||
1125                     !strcmp(param->name, OFMARKINT)) {
1126                         /*
1127                          * Reject is not fatal for [I,O]FMarkInt,  and causes
1128                          * [I,O]FMarker to be reset to No. (See iSCSI v20 A.3.2)
1129                          */
1130                         SET_PSTATE_REJECT(param);
1131                         return 0;
1132                 }
1133                 pr_err("Received %s=%s\n", param->name, value);
1134                 return -1;
1135         }
1136         if (!strcmp(value, IRRELEVANT)) {
1137                 pr_debug("Received %s=%s\n", param->name, value);
1138                 SET_PSTATE_IRRELEVANT(param);
1139                 return 0;
1140         }
1141         if (!strcmp(value, NOTUNDERSTOOD)) {
1142                 if (!IS_PSTATE_PROPOSER(param)) {
1143                         pr_err("Received illegal offer %s=%s\n",
1144                                 param->name, value);
1145                         return -1;
1146                 }
1147
1148 /* #warning FIXME: Add check for X-ExtensionKey here */
1149                 pr_err("Standard iSCSI key \"%s\" cannot be answered"
1150                         " with \"%s\", protocol error.\n", param->name, value);
1151                 return -1;
1152         }
1153
1154         do {
1155                 comma_ptr = NULL;
1156                 comma_ptr = strchr(value, ',');
1157
1158                 if (comma_ptr && !IS_TYPE_VALUE_LIST(param)) {
1159                         pr_err("Detected value separator \",\", but"
1160                                 " key \"%s\" does not allow a value list,"
1161                                 " protocol error.\n", param->name);
1162                         return -1;
1163                 }
1164                 if (comma_ptr)
1165                         *comma_ptr = '\0';
1166
1167                 if (strlen(value) > VALUE_MAXLEN) {
1168                         pr_err("Value for key \"%s\" exceeds %d,"
1169                                 " protocol error.\n", param->name,
1170                                 VALUE_MAXLEN);
1171                         return -1;
1172                 }
1173
1174                 if (IS_TYPE_BOOL_AND(param) || IS_TYPE_BOOL_OR(param)) {
1175                         if (iscsi_check_boolean_value(param, value) < 0)
1176                                 return -1;
1177                 } else if (IS_TYPE_NUMBER(param)) {
1178                         if (iscsi_check_numerical_value(param, value) < 0)
1179                                 return -1;
1180                 } else if (IS_TYPE_STRING(param) || IS_TYPE_VALUE_LIST(param)) {
1181                         if (iscsi_check_string_or_list_value(param, value) < 0)
1182                                 return -1;
1183                 } else {
1184                         pr_err("Huh? 0x%02x\n", param->type);
1185                         return -1;
1186                 }
1187
1188                 if (comma_ptr)
1189                         *comma_ptr++ = ',';
1190
1191                 value = comma_ptr;
1192         } while (value);
1193
1194         return 0;
1195 }
1196
1197 static struct iscsi_param *__iscsi_check_key(
1198         char *key,
1199         int sender,
1200         struct iscsi_param_list *param_list)
1201 {
1202         struct iscsi_param *param;
1203
1204         if (strlen(key) > KEY_MAXLEN) {
1205                 pr_err("Length of key name \"%s\" exceeds %d.\n",
1206                         key, KEY_MAXLEN);
1207                 return NULL;
1208         }
1209
1210         param = iscsi_find_param_from_key(key, param_list);
1211         if (!param)
1212                 return NULL;
1213
1214         if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1215                 pr_err("Key \"%s\" may not be sent to %s,"
1216                         " protocol error.\n", param->name,
1217                         (sender & SENDER_RECEIVER) ? "target" : "initiator");
1218                 return NULL;
1219         }
1220
1221         if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1222                 pr_err("Key \"%s\" may not be sent to %s,"
1223                         " protocol error.\n", param->name,
1224                         (sender & SENDER_RECEIVER) ? "initiator" : "target");
1225                 return NULL;
1226         }
1227
1228         return param;
1229 }
1230
1231 static struct iscsi_param *iscsi_check_key(
1232         char *key,
1233         int phase,
1234         int sender,
1235         struct iscsi_param_list *param_list)
1236 {
1237         struct iscsi_param *param;
1238         /*
1239          * Key name length must not exceed 63 bytes. (See iSCSI v20 5.1)
1240          */
1241         if (strlen(key) > KEY_MAXLEN) {
1242                 pr_err("Length of key name \"%s\" exceeds %d.\n",
1243                         key, KEY_MAXLEN);
1244                 return NULL;
1245         }
1246
1247         param = iscsi_find_param_from_key(key, param_list);
1248         if (!param)
1249                 return NULL;
1250
1251         if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1252                 pr_err("Key \"%s\" may not be sent to %s,"
1253                         " protocol error.\n", param->name,
1254                         (sender & SENDER_RECEIVER) ? "target" : "initiator");
1255                 return NULL;
1256         }
1257         if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1258                 pr_err("Key \"%s\" may not be sent to %s,"
1259                                 " protocol error.\n", param->name,
1260                         (sender & SENDER_RECEIVER) ? "initiator" : "target");
1261                 return NULL;
1262         }
1263
1264         if (IS_PSTATE_ACCEPTOR(param)) {
1265                 pr_err("Key \"%s\" received twice, protocol error.\n",
1266                                 key);
1267                 return NULL;
1268         }
1269
1270         if (!phase)
1271                 return param;
1272
1273         if (!(param->phase & phase)) {
1274                 pr_err("Key \"%s\" may not be negotiated during ",
1275                                 param->name);
1276                 switch (phase) {
1277                 case PHASE_SECURITY:
1278                         pr_debug("Security phase.\n");
1279                         break;
1280                 case PHASE_OPERATIONAL:
1281                         pr_debug("Operational phase.\n");
1282                         break;
1283                 default:
1284                         pr_debug("Unknown phase.\n");
1285                 }
1286                 return NULL;
1287         }
1288
1289         return param;
1290 }
1291
1292 static int iscsi_enforce_integrity_rules(
1293         u8 phase,
1294         struct iscsi_param_list *param_list)
1295 {
1296         char *tmpptr;
1297         u8 DataSequenceInOrder = 0;
1298         u8 ErrorRecoveryLevel = 0, SessionType = 0;
1299         u32 FirstBurstLength = 0, MaxBurstLength = 0;
1300         struct iscsi_param *param = NULL;
1301
1302         list_for_each_entry(param, &param_list->param_list, p_list) {
1303                 if (!(param->phase & phase))
1304                         continue;
1305                 if (!strcmp(param->name, SESSIONTYPE))
1306                         if (!strcmp(param->value, NORMAL))
1307                                 SessionType = 1;
1308                 if (!strcmp(param->name, ERRORRECOVERYLEVEL))
1309                         ErrorRecoveryLevel = simple_strtoul(param->value,
1310                                         &tmpptr, 0);
1311                 if (!strcmp(param->name, DATASEQUENCEINORDER))
1312                         if (!strcmp(param->value, YES))
1313                                 DataSequenceInOrder = 1;
1314                 if (!strcmp(param->name, MAXBURSTLENGTH))
1315                         MaxBurstLength = simple_strtoul(param->value,
1316                                         &tmpptr, 0);
1317         }
1318
1319         list_for_each_entry(param, &param_list->param_list, p_list) {
1320                 if (!(param->phase & phase))
1321                         continue;
1322                 if (!SessionType && !IS_PSTATE_ACCEPTOR(param))
1323                         continue;
1324                 if (!strcmp(param->name, MAXOUTSTANDINGR2T) &&
1325                     DataSequenceInOrder && (ErrorRecoveryLevel > 0)) {
1326                         if (strcmp(param->value, "1")) {
1327                                 if (iscsi_update_param_value(param, "1") < 0)
1328                                         return -1;
1329                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1330                                         param->name, param->value);
1331                         }
1332                 }
1333                 if (!strcmp(param->name, MAXCONNECTIONS) && !SessionType) {
1334                         if (strcmp(param->value, "1")) {
1335                                 if (iscsi_update_param_value(param, "1") < 0)
1336                                         return -1;
1337                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1338                                         param->name, param->value);
1339                         }
1340                 }
1341                 if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1342                         FirstBurstLength = simple_strtoul(param->value,
1343                                         &tmpptr, 0);
1344                         if (FirstBurstLength > MaxBurstLength) {
1345                                 char tmpbuf[11];
1346                                 memset(tmpbuf, 0, sizeof(tmpbuf));
1347                                 sprintf(tmpbuf, "%u", MaxBurstLength);
1348                                 if (iscsi_update_param_value(param, tmpbuf))
1349                                         return -1;
1350                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1351                                         param->name, param->value);
1352                         }
1353                 }
1354         }
1355
1356         return 0;
1357 }
1358
1359 int iscsi_decode_text_input(
1360         u8 phase,
1361         u8 sender,
1362         char *textbuf,
1363         u32 length,
1364         struct iscsi_conn *conn)
1365 {
1366         struct iscsi_param_list *param_list = conn->param_list;
1367         char *tmpbuf, *start = NULL, *end = NULL;
1368
1369         tmpbuf = kzalloc(length + 1, GFP_KERNEL);
1370         if (!tmpbuf) {
1371                 pr_err("Unable to allocate %u + 1 bytes for tmpbuf.\n", length);
1372                 return -1;
1373         }
1374
1375         memcpy(tmpbuf, textbuf, length);
1376         tmpbuf[length] = '\0';
1377         start = tmpbuf;
1378         end = (start + length);
1379
1380         while (start < end) {
1381                 char *key, *value;
1382                 struct iscsi_param *param;
1383
1384                 if (iscsi_extract_key_value(start, &key, &value) < 0) {
1385                         kfree(tmpbuf);
1386                         return -1;
1387                 }
1388
1389                 pr_debug("Got key: %s=%s\n", key, value);
1390
1391                 if (phase & PHASE_SECURITY) {
1392                         if (iscsi_check_for_auth_key(key) > 0) {
1393                                 kfree(tmpbuf);
1394                                 return 1;
1395                         }
1396                 }
1397
1398                 param = iscsi_check_key(key, phase, sender, param_list);
1399                 if (!param) {
1400                         if (iscsi_add_notunderstood_response(key,
1401                                         value, param_list) < 0) {
1402                                 kfree(tmpbuf);
1403                                 return -1;
1404                         }
1405                         start += strlen(key) + strlen(value) + 2;
1406                         continue;
1407                 }
1408                 if (iscsi_check_value(param, value) < 0) {
1409                         kfree(tmpbuf);
1410                         return -1;
1411                 }
1412
1413                 start += strlen(key) + strlen(value) + 2;
1414
1415                 if (IS_PSTATE_PROPOSER(param)) {
1416                         if (iscsi_check_proposer_state(param, value) < 0) {
1417                                 kfree(tmpbuf);
1418                                 return -1;
1419                         }
1420                         SET_PSTATE_RESPONSE_GOT(param);
1421                 } else {
1422                         if (iscsi_check_acceptor_state(param, value, conn) < 0) {
1423                                 kfree(tmpbuf);
1424                                 return -1;
1425                         }
1426                         SET_PSTATE_ACCEPTOR(param);
1427                 }
1428         }
1429
1430         kfree(tmpbuf);
1431         return 0;
1432 }
1433
1434 int iscsi_encode_text_output(
1435         u8 phase,
1436         u8 sender,
1437         char *textbuf,
1438         u32 *length,
1439         struct iscsi_param_list *param_list)
1440 {
1441         char *output_buf = NULL;
1442         struct iscsi_extra_response *er;
1443         struct iscsi_param *param;
1444
1445         output_buf = textbuf + *length;
1446
1447         if (iscsi_enforce_integrity_rules(phase, param_list) < 0)
1448                 return -1;
1449
1450         list_for_each_entry(param, &param_list->param_list, p_list) {
1451                 if (!(param->sender & sender))
1452                         continue;
1453                 if (IS_PSTATE_ACCEPTOR(param) &&
1454                     !IS_PSTATE_RESPONSE_SENT(param) &&
1455                     !IS_PSTATE_REPLY_OPTIONAL(param) &&
1456                     (param->phase & phase)) {
1457                         *length += sprintf(output_buf, "%s=%s",
1458                                 param->name, param->value);
1459                         *length += 1;
1460                         output_buf = textbuf + *length;
1461                         SET_PSTATE_RESPONSE_SENT(param);
1462                         pr_debug("Sending key: %s=%s\n",
1463                                 param->name, param->value);
1464                         continue;
1465                 }
1466                 if (IS_PSTATE_NEGOTIATE(param) &&
1467                     !IS_PSTATE_ACCEPTOR(param) &&
1468                     !IS_PSTATE_PROPOSER(param) &&
1469                     (param->phase & phase)) {
1470                         *length += sprintf(output_buf, "%s=%s",
1471                                 param->name, param->value);
1472                         *length += 1;
1473                         output_buf = textbuf + *length;
1474                         SET_PSTATE_PROPOSER(param);
1475                         iscsi_check_proposer_for_optional_reply(param);
1476                         pr_debug("Sending key: %s=%s\n",
1477                                 param->name, param->value);
1478                 }
1479         }
1480
1481         list_for_each_entry(er, &param_list->extra_response_list, er_list) {
1482                 *length += sprintf(output_buf, "%s=%s", er->key, er->value);
1483                 *length += 1;
1484                 output_buf = textbuf + *length;
1485                 pr_debug("Sending key: %s=%s\n", er->key, er->value);
1486         }
1487         iscsi_release_extra_responses(param_list);
1488
1489         return 0;
1490 }
1491
1492 int iscsi_check_negotiated_keys(struct iscsi_param_list *param_list)
1493 {
1494         int ret = 0;
1495         struct iscsi_param *param;
1496
1497         list_for_each_entry(param, &param_list->param_list, p_list) {
1498                 if (IS_PSTATE_NEGOTIATE(param) &&
1499                     IS_PSTATE_PROPOSER(param) &&
1500                     !IS_PSTATE_RESPONSE_GOT(param) &&
1501                     !IS_PSTATE_REPLY_OPTIONAL(param) &&
1502                     !IS_PHASE_DECLARATIVE(param)) {
1503                         pr_err("No response for proposed key \"%s\".\n",
1504                                         param->name);
1505                         ret = -1;
1506                 }
1507         }
1508
1509         return ret;
1510 }
1511
1512 int iscsi_change_param_value(
1513         char *keyvalue,
1514         struct iscsi_param_list *param_list,
1515         int check_key)
1516 {
1517         char *key = NULL, *value = NULL;
1518         struct iscsi_param *param;
1519         int sender = 0;
1520
1521         if (iscsi_extract_key_value(keyvalue, &key, &value) < 0)
1522                 return -1;
1523
1524         if (!check_key) {
1525                 param = __iscsi_check_key(keyvalue, sender, param_list);
1526                 if (!param)
1527                         return -1;
1528         } else {
1529                 param = iscsi_check_key(keyvalue, 0, sender, param_list);
1530                 if (!param)
1531                         return -1;
1532
1533                 param->set_param = 1;
1534                 if (iscsi_check_value(param, value) < 0) {
1535                         param->set_param = 0;
1536                         return -1;
1537                 }
1538                 param->set_param = 0;
1539         }
1540
1541         if (iscsi_update_param_value(param, value) < 0)
1542                 return -1;
1543
1544         return 0;
1545 }
1546
1547 void iscsi_set_connection_parameters(
1548         struct iscsi_conn_ops *ops,
1549         struct iscsi_param_list *param_list)
1550 {
1551         char *tmpptr;
1552         struct iscsi_param *param;
1553
1554         pr_debug("---------------------------------------------------"
1555                         "---------------\n");
1556         list_for_each_entry(param, &param_list->param_list, p_list) {
1557                 /*
1558                  * Special case to set MAXXMITDATASEGMENTLENGTH from the
1559                  * target requested MaxRecvDataSegmentLength, even though
1560                  * this key is not sent over the wire.
1561                  */
1562                 if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) {
1563                         ops->MaxXmitDataSegmentLength =
1564                                 simple_strtoul(param->value, &tmpptr, 0);
1565                         pr_debug("MaxXmitDataSegmentLength:     %s\n",
1566                                 param->value);
1567                 }
1568
1569                 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1570                         continue;
1571                 if (!strcmp(param->name, AUTHMETHOD)) {
1572                         pr_debug("AuthMethod:                   %s\n",
1573                                 param->value);
1574                 } else if (!strcmp(param->name, HEADERDIGEST)) {
1575                         ops->HeaderDigest = !strcmp(param->value, CRC32C);
1576                         pr_debug("HeaderDigest:                 %s\n",
1577                                 param->value);
1578                 } else if (!strcmp(param->name, DATADIGEST)) {
1579                         ops->DataDigest = !strcmp(param->value, CRC32C);
1580                         pr_debug("DataDigest:                   %s\n",
1581                                 param->value);
1582                 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1583                         /*
1584                          * At this point iscsi_check_acceptor_state() will have
1585                          * set ops->MaxRecvDataSegmentLength from the original
1586                          * initiator provided value.
1587                          */
1588                         pr_debug("MaxRecvDataSegmentLength:     %u\n",
1589                                 ops->MaxRecvDataSegmentLength);
1590                 } else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH)) {
1591                         ops->InitiatorRecvDataSegmentLength =
1592                                 simple_strtoul(param->value, &tmpptr, 0);
1593                         pr_debug("InitiatorRecvDataSegmentLength: %s\n",
1594                                 param->value);
1595                         ops->MaxRecvDataSegmentLength =
1596                                         ops->InitiatorRecvDataSegmentLength;
1597                         pr_debug("Set MRDSL from InitiatorRecvDataSegmentLength\n");
1598                 } else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH)) {
1599                         ops->TargetRecvDataSegmentLength =
1600                                 simple_strtoul(param->value, &tmpptr, 0);
1601                         pr_debug("TargetRecvDataSegmentLength:  %s\n",
1602                                 param->value);
1603                         ops->MaxXmitDataSegmentLength =
1604                                         ops->TargetRecvDataSegmentLength;
1605                         pr_debug("Set MXDSL from TargetRecvDataSegmentLength\n");
1606                 }
1607         }
1608         pr_debug("----------------------------------------------------"
1609                         "--------------\n");
1610 }
1611
1612 void iscsi_set_session_parameters(
1613         struct iscsi_sess_ops *ops,
1614         struct iscsi_param_list *param_list,
1615         int leading)
1616 {
1617         char *tmpptr;
1618         struct iscsi_param *param;
1619
1620         pr_debug("----------------------------------------------------"
1621                         "--------------\n");
1622         list_for_each_entry(param, &param_list->param_list, p_list) {
1623                 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1624                         continue;
1625                 if (!strcmp(param->name, INITIATORNAME)) {
1626                         if (!param->value)
1627                                 continue;
1628                         if (leading)
1629                                 snprintf(ops->InitiatorName,
1630                                                 sizeof(ops->InitiatorName),
1631                                                 "%s", param->value);
1632                         pr_debug("InitiatorName:                %s\n",
1633                                 param->value);
1634                 } else if (!strcmp(param->name, INITIATORALIAS)) {
1635                         if (!param->value)
1636                                 continue;
1637                         snprintf(ops->InitiatorAlias,
1638                                                 sizeof(ops->InitiatorAlias),
1639                                                 "%s", param->value);
1640                         pr_debug("InitiatorAlias:               %s\n",
1641                                 param->value);
1642                 } else if (!strcmp(param->name, TARGETNAME)) {
1643                         if (!param->value)
1644                                 continue;
1645                         if (leading)
1646                                 snprintf(ops->TargetName,
1647                                                 sizeof(ops->TargetName),
1648                                                 "%s", param->value);
1649                         pr_debug("TargetName:                   %s\n",
1650                                 param->value);
1651                 } else if (!strcmp(param->name, TARGETALIAS)) {
1652                         if (!param->value)
1653                                 continue;
1654                         snprintf(ops->TargetAlias, sizeof(ops->TargetAlias),
1655                                         "%s", param->value);
1656                         pr_debug("TargetAlias:                  %s\n",
1657                                 param->value);
1658                 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
1659                         ops->TargetPortalGroupTag =
1660                                 simple_strtoul(param->value, &tmpptr, 0);
1661                         pr_debug("TargetPortalGroupTag:         %s\n",
1662                                 param->value);
1663                 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
1664                         ops->MaxConnections =
1665                                 simple_strtoul(param->value, &tmpptr, 0);
1666                         pr_debug("MaxConnections:               %s\n",
1667                                 param->value);
1668                 } else if (!strcmp(param->name, INITIALR2T)) {
1669                         ops->InitialR2T = !strcmp(param->value, YES);
1670                          pr_debug("InitialR2T:                   %s\n",
1671                                 param->value);
1672                 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
1673                         ops->ImmediateData = !strcmp(param->value, YES);
1674                         pr_debug("ImmediateData:                %s\n",
1675                                 param->value);
1676                 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
1677                         ops->MaxBurstLength =
1678                                 simple_strtoul(param->value, &tmpptr, 0);
1679                         pr_debug("MaxBurstLength:               %s\n",
1680                                 param->value);
1681                 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1682                         ops->FirstBurstLength =
1683                                 simple_strtoul(param->value, &tmpptr, 0);
1684                         pr_debug("FirstBurstLength:             %s\n",
1685                                 param->value);
1686                 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1687                         ops->DefaultTime2Wait =
1688                                 simple_strtoul(param->value, &tmpptr, 0);
1689                         pr_debug("DefaultTime2Wait:             %s\n",
1690                                 param->value);
1691                 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
1692                         ops->DefaultTime2Retain =
1693                                 simple_strtoul(param->value, &tmpptr, 0);
1694                         pr_debug("DefaultTime2Retain:           %s\n",
1695                                 param->value);
1696                 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
1697                         ops->MaxOutstandingR2T =
1698                                 simple_strtoul(param->value, &tmpptr, 0);
1699                         pr_debug("MaxOutstandingR2T:            %s\n",
1700                                 param->value);
1701                 } else if (!strcmp(param->name, DATAPDUINORDER)) {
1702                         ops->DataPDUInOrder = !strcmp(param->value, YES);
1703                         pr_debug("DataPDUInOrder:               %s\n",
1704                                 param->value);
1705                 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
1706                         ops->DataSequenceInOrder = !strcmp(param->value, YES);
1707                         pr_debug("DataSequenceInOrder:          %s\n",
1708                                 param->value);
1709                 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
1710                         ops->ErrorRecoveryLevel =
1711                                 simple_strtoul(param->value, &tmpptr, 0);
1712                         pr_debug("ErrorRecoveryLevel:           %s\n",
1713                                 param->value);
1714                 } else if (!strcmp(param->name, SESSIONTYPE)) {
1715                         ops->SessionType = !strcmp(param->value, DISCOVERY);
1716                         pr_debug("SessionType:                  %s\n",
1717                                 param->value);
1718                 } else if (!strcmp(param->name, RDMAEXTENSIONS)) {
1719                         ops->RDMAExtensions = !strcmp(param->value, YES);
1720                         pr_debug("RDMAExtensions:               %s\n",
1721                                 param->value);
1722                 }
1723         }
1724         pr_debug("----------------------------------------------------"
1725                         "--------------\n");
1726
1727 }