drivers/target/iscsi/iscsi_target_configfs.c

   1 /*******************************************************************************
   2  * This file contains the configfs implementation for iSCSI Target mode
   3  * from the LIO-Target Project.
   4  *
   5  * (c) Copyright 2007-2013 Datera, Inc.
   6  *
   7  * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  ****************************************************************************/
  19
  20 #include <linux/configfs.h>
  21 #include <linux/ctype.h>
  22 #include <linux/export.h>
  23 #include <linux/inet.h>
  24 #include <target/target_core_base.h>
  25 #include <target/target_core_fabric.h>
  26 #include <target/target_core_fabric_configfs.h>
  27 #include <target/configfs_macros.h>
  28 #include <target/iscsi/iscsi_transport.h>
  29
  30 #include <target/iscsi/iscsi_target_core.h>
  31 #include "iscsi_target_parameters.h"
  32 #include "iscsi_target_device.h"
  33 #include "iscsi_target_erl0.h"
  34 #include "iscsi_target_nodeattrib.h"
  35 #include "iscsi_target_tpg.h"
  36 #include "iscsi_target_util.h"
  37 #include "iscsi_target.h"
  38 #include <target/iscsi/iscsi_target_stat.h>
  39
  40 struct lio_target_configfs_attribute {
  41         struct configfs_attribute attr;
  42         ssize_t (*show)(void *, char *);
  43         ssize_t (*store)(void *, const char *, size_t);
  44 };
  45
  46 /* Start items for lio_target_portal_cit */
  47
  48 static ssize_t lio_target_np_show_sctp(
  49         struct se_tpg_np *se_tpg_np,
  50         char *page)
  51 {
  52         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
  53                                 struct iscsi_tpg_np, se_tpg_np);
  54         struct iscsi_tpg_np *tpg_np_sctp;
  55         ssize_t rb;
  56
  57         tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
  58         if (tpg_np_sctp)
  59                 rb = sprintf(page, "1\n");
  60         else
  61                 rb = sprintf(page, "0\n");
  62
  63         return rb;
  64 }
  65
  66 static ssize_t lio_target_np_store_sctp(
  67         struct se_tpg_np *se_tpg_np,
  68         const char *page,
  69         size_t count)
  70 {
  71         struct iscsi_np *np;
  72         struct iscsi_portal_group *tpg;
  73         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
  74                                 struct iscsi_tpg_np, se_tpg_np);
  75         struct iscsi_tpg_np *tpg_np_sctp = NULL;
  76         u32 op;
  77         int ret;
  78
  79         ret = kstrtou32(page, 0, &op);
  80         if (ret)
  81                 return ret;
  82         if ((op != 1) && (op != 0)) {
  83                 pr_err("Illegal value for tpg_enable: %u\n", op);
  84                 return -EINVAL;
  85         }
  86         np = tpg_np->tpg_np;
  87         if (!np) {
  88                 pr_err("Unable to locate struct iscsi_np from"
  89                                 " struct iscsi_tpg_np\n");
  90                 return -EINVAL;
  91         }
  92
  93         tpg = tpg_np->tpg;
  94         if (iscsit_get_tpg(tpg) < 0)
  95                 return -EINVAL;
  96
  97         if (op) {
  98                 /*
  99                  * Use existing np->np_sockaddr for SCTP network portal reference
 100                  */
 101                 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 102                                         tpg_np, ISCSI_SCTP_TCP);
 103                 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
 104                         goto out;
 105         } else {
 106                 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
 107                 if (!tpg_np_sctp)
 108                         goto out;
 109
 110                 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
 111                 if (ret < 0)
 112                         goto out;
 113         }
 114
 115         iscsit_put_tpg(tpg);
 116         return count;
 117 out:
 118         iscsit_put_tpg(tpg);
 119         return -EINVAL;
 120 }
 121
 122 TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
 123
 124 static ssize_t lio_target_np_show_iser(
 125         struct se_tpg_np *se_tpg_np,
 126         char *page)
 127 {
 128         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
 129                                 struct iscsi_tpg_np, se_tpg_np);
 130         struct iscsi_tpg_np *tpg_np_iser;
 131         ssize_t rb;
 132
 133         tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 134         if (tpg_np_iser)
 135                 rb = sprintf(page, "1\n");
 136         else
 137                 rb = sprintf(page, "0\n");
 138
 139         return rb;
 140 }
 141
 142 static ssize_t lio_target_np_store_iser(
 143         struct se_tpg_np *se_tpg_np,
 144         const char *page,
 145         size_t count)
 146 {
 147         struct iscsi_np *np;
 148         struct iscsi_portal_group *tpg;
 149         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
 150                                 struct iscsi_tpg_np, se_tpg_np);
 151         struct iscsi_tpg_np *tpg_np_iser = NULL;
 152         char *endptr;
 153         u32 op;
 154         int rc = 0;
 155
 156         op = simple_strtoul(page, &endptr, 0);
 157         if ((op != 1) && (op != 0)) {
 158                 pr_err("Illegal value for tpg_enable: %u\n", op);
 159                 return -EINVAL;
 160         }
 161         np = tpg_np->tpg_np;
 162         if (!np) {
 163                 pr_err("Unable to locate struct iscsi_np from"
 164                                 " struct iscsi_tpg_np\n");
 165                 return -EINVAL;
 166         }
 167
 168         tpg = tpg_np->tpg;
 169         if (iscsit_get_tpg(tpg) < 0)
 170                 return -EINVAL;
 171
 172         if (op) {
 173                 rc = request_module("ib_isert");
 174                 if (rc != 0) {
 175                         pr_warn("Unable to request_module for ib_isert\n");
 176                         rc = 0;
 177                 }
 178
 179                 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 180                                 tpg_np, ISCSI_INFINIBAND);
 181                 if (IS_ERR(tpg_np_iser)) {
 182                         rc = PTR_ERR(tpg_np_iser);
 183                         goto out;
 184                 }
 185         } else {
 186                 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 187                 if (tpg_np_iser) {
 188                         rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
 189                         if (rc < 0)
 190                                 goto out;
 191                 }
 192         }
 193
 194         iscsit_put_tpg(tpg);
 195         return count;
 196 out:
 197         iscsit_put_tpg(tpg);
 198         return rc;
 199 }
 200
 201 TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
 202
 203 static struct configfs_attribute *lio_target_portal_attrs[] = {
 204         &lio_target_np_sctp.attr,
 205         &lio_target_np_iser.attr,
 206         NULL,
 207 };
 208
 209 /* Stop items for lio_target_portal_cit */
 210
 211 /* Start items for lio_target_np_cit */
 212
 213 #define MAX_PORTAL_LEN          256
 214
 215 static struct se_tpg_np *lio_target_call_addnptotpg(
 216         struct se_portal_group *se_tpg,
 217         struct config_group *group,
 218         const char *name)
 219 {
 220         struct iscsi_portal_group *tpg;
 221         struct iscsi_tpg_np *tpg_np;
 222         char *str, *str2, *ip_str, *port_str;
 223         struct sockaddr_storage sockaddr;
 224         struct sockaddr_in *sock_in;
 225         struct sockaddr_in6 *sock_in6;
 226         unsigned long port;
 227         int ret;
 228         char buf[MAX_PORTAL_LEN + 1];
 229
 230         if (strlen(name) > MAX_PORTAL_LEN) {
 231                 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
 232                         (int)strlen(name), MAX_PORTAL_LEN);
 233                 return ERR_PTR(-EOVERFLOW);
 234         }
 235         memset(buf, 0, MAX_PORTAL_LEN + 1);
 236         snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
 237
 238         memset(&sockaddr, 0, sizeof(struct sockaddr_storage));
 239
 240         str = strstr(buf, "[");
 241         if (str) {
 242                 const char *end;
 243
 244                 str2 = strstr(str, "]");
 245                 if (!str2) {
 246                         pr_err("Unable to locate trailing \"]\""
 247                                 " in IPv6 iSCSI network portal address\n");
 248                         return ERR_PTR(-EINVAL);
 249                 }
 250                 str++; /* Skip over leading "[" */
 251                 *str2 = '\0'; /* Terminate the unbracketed IPv6 address */
 252                 str2++; /* Skip over the \0 */
 253                 port_str = strstr(str2, ":");
 254                 if (!port_str) {
 255                         pr_err("Unable to locate \":port\""
 256                                 " in IPv6 iSCSI network portal address\n");
 257                         return ERR_PTR(-EINVAL);
 258                 }
 259                 *port_str = '\0'; /* Terminate string for IP */
 260                 port_str++; /* Skip over ":" */
 261
 262                 ret = kstrtoul(port_str, 0, &port);
 263                 if (ret < 0) {
 264                         pr_err("kstrtoul() failed for port_str: %d\n", ret);
 265                         return ERR_PTR(ret);
 266                 }
 267                 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
 268                 sock_in6->sin6_family = AF_INET6;
 269                 sock_in6->sin6_port = htons((unsigned short)port);
 270                 ret = in6_pton(str, -1,
 271                                 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
 272                 if (ret <= 0) {
 273                         pr_err("in6_pton returned: %d\n", ret);
 274                         return ERR_PTR(-EINVAL);
 275                 }
 276         } else {
 277                 str = ip_str = &buf[0];
 278                 port_str = strstr(ip_str, ":");
 279                 if (!port_str) {
 280                         pr_err("Unable to locate \":port\""
 281                                 " in IPv4 iSCSI network portal address\n");
 282                         return ERR_PTR(-EINVAL);
 283                 }
 284                 *port_str = '\0'; /* Terminate string for IP */
 285                 port_str++; /* Skip over ":" */
 286
 287                 ret = kstrtoul(port_str, 0, &port);
 288                 if (ret < 0) {
 289                         pr_err("kstrtoul() failed for port_str: %d\n", ret);
 290                         return ERR_PTR(ret);
 291                 }
 292                 sock_in = (struct sockaddr_in *)&sockaddr;
 293                 sock_in->sin_family = AF_INET;
 294                 sock_in->sin_port = htons((unsigned short)port);
 295                 sock_in->sin_addr.s_addr = in_aton(ip_str);
 296         }
 297         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
 298         ret = iscsit_get_tpg(tpg);
 299         if (ret < 0)
 300                 return ERR_PTR(-EINVAL);
 301
 302         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
 303                 " PORTAL: %s\n",
 304                 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 305                 tpg->tpgt, name);
 306         /*
 307          * Assume ISCSI_TCP by default.  Other network portals for other
 308          * iSCSI fabrics:
 309          *
 310          * Traditional iSCSI over SCTP (initial support)
 311          * iSER/TCP (TODO, hardware available)
 312          * iSER/SCTP (TODO, software emulation with osc-iwarp)
 313          * iSER/IB (TODO, hardware available)
 314          *
 315          * can be enabled with attributes under
 316          * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
 317          *
 318          */
 319         tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL,
 320                                 ISCSI_TCP);
 321         if (IS_ERR(tpg_np)) {
 322                 iscsit_put_tpg(tpg);
 323                 return ERR_CAST(tpg_np);
 324         }
 325         pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
 326
 327         iscsit_put_tpg(tpg);
 328         return &tpg_np->se_tpg_np;
 329 }
 330
 331 static void lio_target_call_delnpfromtpg(
 332         struct se_tpg_np *se_tpg_np)
 333 {
 334         struct iscsi_portal_group *tpg;
 335         struct iscsi_tpg_np *tpg_np;
 336         struct se_portal_group *se_tpg;
 337         int ret;
 338
 339         tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
 340         tpg = tpg_np->tpg;
 341         ret = iscsit_get_tpg(tpg);
 342         if (ret < 0)
 343                 return;
 344
 345         se_tpg = &tpg->tpg_se_tpg;
 346         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
 347                 " PORTAL: %pISpc\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 348                 tpg->tpgt, &tpg_np->tpg_np->np_sockaddr);
 349
 350         ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
 351         if (ret < 0)
 352                 goto out;
 353
 354         pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
 355 out:
 356         iscsit_put_tpg(tpg);
 357 }
 358
 359 /* End items for lio_target_np_cit */
 360
 361 /* Start items for lio_target_nacl_attrib_cit */
 362
 363 #define DEF_NACL_ATTRIB(name)                                           \
 364 static ssize_t iscsi_nacl_attrib_show_##name(                           \
 365         struct se_node_acl *se_nacl,                                    \
 366         char *page)                                                     \
 367 {                                                                       \
 368         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 369                                         se_node_acl);                   \
 370                                                                         \
 371         return sprintf(page, "%u\n", nacl->node_attrib.name);           \
 372 }                                                                       \
 373                                                                         \
 374 static ssize_t iscsi_nacl_attrib_store_##name(                          \
 375         struct se_node_acl *se_nacl,                                    \
 376         const char *page,                                               \
 377         size_t count)                                                   \
 378 {                                                                       \
 379         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 380                                         se_node_acl);                   \
 381         u32 val;                                                        \
 382         int ret;                                                        \
 383                                                                         \
 384         ret = kstrtou32(page, 0, &val);                                 \
 385         if (ret)                                                        \
 386                 return ret;                                             \
 387         ret = iscsit_na_##name(nacl, val);                              \
 388         if (ret < 0)                                                    \
 389                 return ret;                                             \
 390                                                                         \
 391         return count;                                                   \
 392 }
 393
 394 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
 395 /*
 396  * Define iscsi_node_attrib_s_dataout_timeout
 397  */
 398 DEF_NACL_ATTRIB(dataout_timeout);
 399 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
 400 /*
 401  * Define iscsi_node_attrib_s_dataout_timeout_retries
 402  */
 403 DEF_NACL_ATTRIB(dataout_timeout_retries);
 404 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
 405 /*
 406  * Define iscsi_node_attrib_s_default_erl
 407  */
 408 DEF_NACL_ATTRIB(default_erl);
 409 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
 410 /*
 411  * Define iscsi_node_attrib_s_nopin_timeout
 412  */
 413 DEF_NACL_ATTRIB(nopin_timeout);
 414 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
 415 /*
 416  * Define iscsi_node_attrib_s_nopin_response_timeout
 417  */
 418 DEF_NACL_ATTRIB(nopin_response_timeout);
 419 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
 420 /*
 421  * Define iscsi_node_attrib_s_random_datain_pdu_offsets
 422  */
 423 DEF_NACL_ATTRIB(random_datain_pdu_offsets);
 424 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
 425 /*
 426  * Define iscsi_node_attrib_s_random_datain_seq_offsets
 427  */
 428 DEF_NACL_ATTRIB(random_datain_seq_offsets);
 429 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
 430 /*
 431  * Define iscsi_node_attrib_s_random_r2t_offsets
 432  */
 433 DEF_NACL_ATTRIB(random_r2t_offsets);
 434 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
 435
 436 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
 437         &iscsi_nacl_attrib_dataout_timeout.attr,
 438         &iscsi_nacl_attrib_dataout_timeout_retries.attr,
 439         &iscsi_nacl_attrib_default_erl.attr,
 440         &iscsi_nacl_attrib_nopin_timeout.attr,
 441         &iscsi_nacl_attrib_nopin_response_timeout.attr,
 442         &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
 443         &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
 444         &iscsi_nacl_attrib_random_r2t_offsets.attr,
 445         NULL,
 446 };
 447
 448 /* End items for lio_target_nacl_attrib_cit */
 449
 450 /* Start items for lio_target_nacl_auth_cit */
 451
 452 #define __DEF_NACL_AUTH_STR(prefix, name, flags)                        \
 453 static ssize_t __iscsi_##prefix##_show_##name(                          \
 454         struct iscsi_node_acl *nacl,                                    \
 455         char *page)                                                     \
 456 {                                                                       \
 457         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 458                                                                         \
 459         if (!capable(CAP_SYS_ADMIN))                                    \
 460                 return -EPERM;                                          \
 461         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);           \
 462 }                                                                       \
 463                                                                         \
 464 static ssize_t __iscsi_##prefix##_store_##name(                         \
 465         struct iscsi_node_acl *nacl,                                    \
 466         const char *page,                                               \
 467         size_t count)                                                   \
 468 {                                                                       \
 469         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 470                                                                         \
 471         if (!capable(CAP_SYS_ADMIN))                                    \
 472                 return -EPERM;                                          \
 473         if (count >= sizeof(auth->name))                                \
 474                 return -EINVAL;                                         \
 475         snprintf(auth->name, sizeof(auth->name), "%s", page);           \
 476         if (!strncmp("NULL", auth->name, 4))                            \
 477                 auth->naf_flags &= ~flags;                              \
 478         else                                                            \
 479                 auth->naf_flags |= flags;                               \
 480                                                                         \
 481         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                    \
 482             (auth->naf_flags & NAF_PASSWORD_IN_SET))                    \
 483                 auth->authenticate_target = 1;                          \
 484         else                                                            \
 485                 auth->authenticate_target = 0;                          \
 486                                                                         \
 487         return count;                                                   \
 488 }
 489
 490 #define __DEF_NACL_AUTH_INT(prefix, name)                               \
 491 static ssize_t __iscsi_##prefix##_show_##name(                          \
 492         struct iscsi_node_acl *nacl,                                    \
 493         char *page)                                                     \
 494 {                                                                       \
 495         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 496                                                                         \
 497         if (!capable(CAP_SYS_ADMIN))                                    \
 498                 return -EPERM;                                          \
 499                                                                         \
 500         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);           \
 501 }
 502
 503 #define DEF_NACL_AUTH_STR(name, flags)                                  \
 504         __DEF_NACL_AUTH_STR(nacl_auth, name, flags)                     \
 505 static ssize_t iscsi_nacl_auth_show_##name(                             \
 506         struct se_node_acl *nacl,                                       \
 507         char *page)                                                     \
 508 {                                                                       \
 509         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 510                         struct iscsi_node_acl, se_node_acl), page);             \
 511 }                                                                       \
 512 static ssize_t iscsi_nacl_auth_store_##name(                            \
 513         struct se_node_acl *nacl,                                       \
 514         const char *page,                                               \
 515         size_t count)                                                   \
 516 {                                                                       \
 517         return __iscsi_nacl_auth_store_##name(container_of(nacl,        \
 518                         struct iscsi_node_acl, se_node_acl), page, count);      \
 519 }
 520
 521 #define DEF_NACL_AUTH_INT(name)                                         \
 522         __DEF_NACL_AUTH_INT(nacl_auth, name)                            \
 523 static ssize_t iscsi_nacl_auth_show_##name(                             \
 524         struct se_node_acl *nacl,                                       \
 525         char *page)                                                     \
 526 {                                                                       \
 527         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 528                         struct iscsi_node_acl, se_node_acl), page);             \
 529 }
 530
 531 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
 532 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
 533
 534 /*
 535  * One-way authentication userid
 536  */
 537 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
 538 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
 539 /*
 540  * One-way authentication password
 541  */
 542 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
 543 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
 544 /*
 545  * Enforce mutual authentication
 546  */
 547 DEF_NACL_AUTH_INT(authenticate_target);
 548 AUTH_ATTR_RO(authenticate_target);
 549 /*
 550  * Mutual authentication userid
 551  */
 552 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
 553 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
 554 /*
 555  * Mutual authentication password
 556  */
 557 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
 558 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
 559
 560 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
 561         &iscsi_nacl_auth_userid.attr,
 562         &iscsi_nacl_auth_password.attr,
 563         &iscsi_nacl_auth_authenticate_target.attr,
 564         &iscsi_nacl_auth_userid_mutual.attr,
 565         &iscsi_nacl_auth_password_mutual.attr,
 566         NULL,
 567 };
 568
 569 /* End items for lio_target_nacl_auth_cit */
 570
 571 /* Start items for lio_target_nacl_param_cit */
 572
 573 #define DEF_NACL_PARAM(name)                                            \
 574 static ssize_t iscsi_nacl_param_show_##name(                            \
 575         struct se_node_acl *se_nacl,                                    \
 576         char *page)                                                     \
 577 {                                                                       \
 578         struct iscsi_session *sess;                                     \
 579         struct se_session *se_sess;                                     \
 580         ssize_t rb;                                                     \
 581                                                                         \
 582         spin_lock_bh(&se_nacl->nacl_sess_lock);                         \
 583         se_sess = se_nacl->nacl_sess;                                   \
 584         if (!se_sess) {                                                 \
 585                 rb = snprintf(page, PAGE_SIZE,                          \
 586                         "No Active iSCSI Session\n");                   \
 587         } else {                                                        \
 588                 sess = se_sess->fabric_sess_ptr;                        \
 589                 rb = snprintf(page, PAGE_SIZE, "%u\n",                  \
 590                         (u32)sess->sess_ops->name);                     \
 591         }                                                               \
 592         spin_unlock_bh(&se_nacl->nacl_sess_lock);                       \
 593                                                                         \
 594         return rb;                                                      \
 595 }
 596
 597 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
 598
 599 DEF_NACL_PARAM(MaxConnections);
 600 NACL_PARAM_ATTR(MaxConnections);
 601
 602 DEF_NACL_PARAM(InitialR2T);
 603 NACL_PARAM_ATTR(InitialR2T);
 604
 605 DEF_NACL_PARAM(ImmediateData);
 606 NACL_PARAM_ATTR(ImmediateData);
 607
 608 DEF_NACL_PARAM(MaxBurstLength);
 609 NACL_PARAM_ATTR(MaxBurstLength);
 610
 611 DEF_NACL_PARAM(FirstBurstLength);
 612 NACL_PARAM_ATTR(FirstBurstLength);
 613
 614 DEF_NACL_PARAM(DefaultTime2Wait);
 615 NACL_PARAM_ATTR(DefaultTime2Wait);
 616
 617 DEF_NACL_PARAM(DefaultTime2Retain);
 618 NACL_PARAM_ATTR(DefaultTime2Retain);
 619
 620 DEF_NACL_PARAM(MaxOutstandingR2T);
 621 NACL_PARAM_ATTR(MaxOutstandingR2T);
 622
 623 DEF_NACL_PARAM(DataPDUInOrder);
 624 NACL_PARAM_ATTR(DataPDUInOrder);
 625
 626 DEF_NACL_PARAM(DataSequenceInOrder);
 627 NACL_PARAM_ATTR(DataSequenceInOrder);
 628
 629 DEF_NACL_PARAM(ErrorRecoveryLevel);
 630 NACL_PARAM_ATTR(ErrorRecoveryLevel);
 631
 632 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
 633         &iscsi_nacl_param_MaxConnections.attr,
 634         &iscsi_nacl_param_InitialR2T.attr,
 635         &iscsi_nacl_param_ImmediateData.attr,
 636         &iscsi_nacl_param_MaxBurstLength.attr,
 637         &iscsi_nacl_param_FirstBurstLength.attr,
 638         &iscsi_nacl_param_DefaultTime2Wait.attr,
 639         &iscsi_nacl_param_DefaultTime2Retain.attr,
 640         &iscsi_nacl_param_MaxOutstandingR2T.attr,
 641         &iscsi_nacl_param_DataPDUInOrder.attr,
 642         &iscsi_nacl_param_DataSequenceInOrder.attr,
 643         &iscsi_nacl_param_ErrorRecoveryLevel.attr,
 644         NULL,
 645 };
 646
 647 /* End items for lio_target_nacl_param_cit */
 648
 649 /* Start items for lio_target_acl_cit */
 650
 651 static ssize_t lio_target_nacl_show_info(
 652         struct se_node_acl *se_nacl,
 653         char *page)
 654 {
 655         struct iscsi_session *sess;
 656         struct iscsi_conn *conn;
 657         struct se_session *se_sess;
 658         ssize_t rb = 0;
 659         u32 max_cmd_sn;
 660
 661         spin_lock_bh(&se_nacl->nacl_sess_lock);
 662         se_sess = se_nacl->nacl_sess;
 663         if (!se_sess) {
 664                 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
 665                         " Endpoint: %s\n", se_nacl->initiatorname);
 666         } else {
 667                 sess = se_sess->fabric_sess_ptr;
 668
 669                 rb += sprintf(page+rb, "InitiatorName: %s\n",
 670                         sess->sess_ops->InitiatorName);
 671                 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
 672                         sess->sess_ops->InitiatorAlias);
 673
 674                 rb += sprintf(page+rb,
 675                               "LIO Session ID: %u   ISID: 0x%6ph  TSIH: %hu  ",
 676                               sess->sid, sess->isid, sess->tsih);
 677                 rb += sprintf(page+rb, "SessionType: %s\n",
 678                                 (sess->sess_ops->SessionType) ?
 679                                 "Discovery" : "Normal");
 680                 rb += sprintf(page+rb, "Session State: ");
 681                 switch (sess->session_state) {
 682                 case TARG_SESS_STATE_FREE:
 683                         rb += sprintf(page+rb, "TARG_SESS_FREE\n");
 684                         break;
 685                 case TARG_SESS_STATE_ACTIVE:
 686                         rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
 687                         break;
 688                 case TARG_SESS_STATE_LOGGED_IN:
 689                         rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
 690                         break;
 691                 case TARG_SESS_STATE_FAILED:
 692                         rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
 693                         break;
 694                 case TARG_SESS_STATE_IN_CONTINUE:
 695                         rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
 696                         break;
 697                 default:
 698                         rb += sprintf(page+rb, "ERROR: Unknown Session"
 699                                         " State!\n");
 700                         break;
 701                 }
 702
 703                 rb += sprintf(page+rb, "---------------------[iSCSI Session"
 704                                 " Values]-----------------------\n");
 705                 rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
 706                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
 707                 max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn);
 708                 rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
 709                                 "   0x%08x   0x%08x\n",
 710                         sess->cmdsn_window,
 711                         (max_cmd_sn - sess->exp_cmd_sn) + 1,
 712                         sess->exp_cmd_sn, max_cmd_sn,
 713                         sess->init_task_tag, sess->targ_xfer_tag);
 714                 rb += sprintf(page+rb, "----------------------[iSCSI"
 715                                 " Connections]-------------------------\n");
 716
 717                 spin_lock(&sess->conn_lock);
 718                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
 719                         rb += sprintf(page+rb, "CID: %hu  Connection"
 720                                         " State: ", conn->cid);
 721                         switch (conn->conn_state) {
 722                         case TARG_CONN_STATE_FREE:
 723                                 rb += sprintf(page+rb,
 724                                         "TARG_CONN_STATE_FREE\n");
 725                                 break;
 726                         case TARG_CONN_STATE_XPT_UP:
 727                                 rb += sprintf(page+rb,
 728                                         "TARG_CONN_STATE_XPT_UP\n");
 729                                 break;
 730                         case TARG_CONN_STATE_IN_LOGIN:
 731                                 rb += sprintf(page+rb,
 732                                         "TARG_CONN_STATE_IN_LOGIN\n");
 733                                 break;
 734                         case TARG_CONN_STATE_LOGGED_IN:
 735                                 rb += sprintf(page+rb,
 736                                         "TARG_CONN_STATE_LOGGED_IN\n");
 737                                 break;
 738                         case TARG_CONN_STATE_IN_LOGOUT:
 739                                 rb += sprintf(page+rb,
 740                                         "TARG_CONN_STATE_IN_LOGOUT\n");
 741                                 break;
 742                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
 743                                 rb += sprintf(page+rb,
 744                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
 745                                 break;
 746                         case TARG_CONN_STATE_CLEANUP_WAIT:
 747                                 rb += sprintf(page+rb,
 748                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
 749                                 break;
 750                         default:
 751                                 rb += sprintf(page+rb,
 752                                         "ERROR: Unknown Connection State!\n");
 753                                 break;
 754                         }
 755
 756                         rb += sprintf(page+rb, "   Address %pISc %s", &conn->login_sockaddr,
 757                                 (conn->network_transport == ISCSI_TCP) ?
 758                                 "TCP" : "SCTP");
 759                         rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
 760                                 conn->stat_sn);
 761                 }
 762                 spin_unlock(&sess->conn_lock);
 763         }
 764         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 765
 766         return rb;
 767 }
 768
 769 TF_NACL_BASE_ATTR_RO(lio_target, info);
 770
 771 static ssize_t lio_target_nacl_show_cmdsn_depth(
 772         struct se_node_acl *se_nacl,
 773         char *page)
 774 {
 775         return sprintf(page, "%u\n", se_nacl->queue_depth);
 776 }
 777
 778 static ssize_t lio_target_nacl_store_cmdsn_depth(
 779         struct se_node_acl *se_nacl,
 780         const char *page,
 781         size_t count)
 782 {
 783         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 784         struct iscsi_portal_group *tpg = container_of(se_tpg,
 785                         struct iscsi_portal_group, tpg_se_tpg);
 786         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
 787         u32 cmdsn_depth = 0;
 788         int ret;
 789
 790         ret = kstrtou32(page, 0, &cmdsn_depth);
 791         if (ret)
 792                 return ret;
 793         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 794                 pr_err("Passed cmdsn_depth: %u exceeds"
 795                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
 796                         TA_DEFAULT_CMDSN_DEPTH_MAX);
 797                 return -EINVAL;
 798         }
 799         acl_ci = &se_nacl->acl_group.cg_item;
 800         if (!acl_ci) {
 801                 pr_err("Unable to locatel acl_ci\n");
 802                 return -EINVAL;
 803         }
 804         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
 805         if (!tpg_ci) {
 806                 pr_err("Unable to locate tpg_ci\n");
 807                 return -EINVAL;
 808         }
 809         wwn_ci = &tpg_ci->ci_group->cg_item;
 810         if (!wwn_ci) {
 811                 pr_err("Unable to locate config_item wwn_ci\n");
 812                 return -EINVAL;
 813         }
 814
 815         if (iscsit_get_tpg(tpg) < 0)
 816                 return -EINVAL;
 817         /*
 818          * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
 819          */
 820         ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
 821                                 config_item_name(acl_ci), cmdsn_depth, 1);
 822
 823         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
 824                 "InitiatorName: %s\n", config_item_name(wwn_ci),
 825                 config_item_name(tpg_ci), cmdsn_depth,
 826                 config_item_name(acl_ci));
 827
 828         iscsit_put_tpg(tpg);
 829         return (!ret) ? count : (ssize_t)ret;
 830 }
 831
 832 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
 833
 834 static ssize_t lio_target_nacl_show_tag(
 835         struct se_node_acl *se_nacl,
 836         char *page)
 837 {
 838         return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
 839 }
 840
 841 static ssize_t lio_target_nacl_store_tag(
 842         struct se_node_acl *se_nacl,
 843         const char *page,
 844         size_t count)
 845 {
 846         int ret;
 847
 848         ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
 849
 850         if (ret < 0)
 851                 return ret;
 852         return count;
 853 }
 854
 855 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
 856
 857 static struct configfs_attribute *lio_target_initiator_attrs[] = {
 858         &lio_target_nacl_info.attr,
 859         &lio_target_nacl_cmdsn_depth.attr,
 860         &lio_target_nacl_tag.attr,
 861         NULL,
 862 };
 863
 864 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
 865                 const char *name)
 866 {
 867         struct iscsi_node_acl *acl =
 868                 container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
 869         struct config_group *stats_cg = &se_nacl->acl_fabric_stat_group;
 870
 871         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 872                                 GFP_KERNEL);
 873         if (!stats_cg->default_groups) {
 874                 pr_err("Unable to allocate memory for"
 875                                 " stats_cg->default_groups\n");
 876                 return -ENOMEM;
 877         }
 878
 879         stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
 880         stats_cg->default_groups[1] = NULL;
 881         config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
 882                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 883
 884         return 0;
 885 }
 886
 887 static void lio_target_cleanup_nodeacl( struct se_node_acl *se_nacl)
 888 {
 889         struct iscsi_node_acl *acl = container_of(se_nacl,
 890                         struct iscsi_node_acl, se_node_acl);
 891         struct config_item *df_item;
 892         struct config_group *stats_cg;
 893         int i;
 894
 895         stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
 896         for (i = 0; stats_cg->default_groups[i]; i++) {
 897                 df_item = &stats_cg->default_groups[i]->cg_item;
 898                 stats_cg->default_groups[i] = NULL;
 899                 config_item_put(df_item);
 900         }
 901         kfree(stats_cg->default_groups);
 902 }
 903
 904 /* End items for lio_target_acl_cit */
 905
 906 /* Start items for lio_target_tpg_attrib_cit */
 907
 908 #define DEF_TPG_ATTRIB(name)                                            \
 909                                                                         \
 910 static ssize_t iscsi_tpg_attrib_show_##name(                            \
 911         struct se_portal_group *se_tpg,                         \
 912         char *page)                                                     \
 913 {                                                                       \
 914         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 915                         struct iscsi_portal_group, tpg_se_tpg); \
 916         ssize_t rb;                                                     \
 917                                                                         \
 918         if (iscsit_get_tpg(tpg) < 0)                                    \
 919                 return -EINVAL;                                         \
 920                                                                         \
 921         rb = sprintf(page, "%u\n", tpg->tpg_attrib.name);               \
 922         iscsit_put_tpg(tpg);                                            \
 923         return rb;                                                      \
 924 }                                                                       \
 925                                                                         \
 926 static ssize_t iscsi_tpg_attrib_store_##name(                           \
 927         struct se_portal_group *se_tpg,                         \
 928         const char *page,                                               \
 929         size_t count)                                                   \
 930 {                                                                       \
 931         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 932                         struct iscsi_portal_group, tpg_se_tpg); \
 933         u32 val;                                                        \
 934         int ret;                                                        \
 935                                                                         \
 936         if (iscsit_get_tpg(tpg) < 0)                                    \
 937                 return -EINVAL;                                         \
 938                                                                         \
 939         ret = kstrtou32(page, 0, &val);                                 \
 940         if (ret)                                                        \
 941                 goto out;                                               \
 942         ret = iscsit_ta_##name(tpg, val);                               \
 943         if (ret < 0)                                                    \
 944                 goto out;                                               \
 945                                                                         \
 946         iscsit_put_tpg(tpg);                                            \
 947         return count;                                                   \
 948 out:                                                                    \
 949         iscsit_put_tpg(tpg);                                            \
 950         return ret;                                                     \
 951 }
 952
 953 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
 954
 955 /*
 956  * Define iscsi_tpg_attrib_s_authentication
 957  */
 958 DEF_TPG_ATTRIB(authentication);
 959 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
 960 /*
 961  * Define iscsi_tpg_attrib_s_login_timeout
 962  */
 963 DEF_TPG_ATTRIB(login_timeout);
 964 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
 965 /*
 966  * Define iscsi_tpg_attrib_s_netif_timeout
 967  */
 968 DEF_TPG_ATTRIB(netif_timeout);
 969 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
 970 /*
 971  * Define iscsi_tpg_attrib_s_generate_node_acls
 972  */
 973 DEF_TPG_ATTRIB(generate_node_acls);
 974 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 975 /*
 976  * Define iscsi_tpg_attrib_s_default_cmdsn_depth
 977  */
 978 DEF_TPG_ATTRIB(default_cmdsn_depth);
 979 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
 980 /*
 981  Define iscsi_tpg_attrib_s_cache_dynamic_acls
 982  */
 983 DEF_TPG_ATTRIB(cache_dynamic_acls);
 984 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 985 /*
 986  * Define iscsi_tpg_attrib_s_demo_mode_write_protect
 987  */
 988 DEF_TPG_ATTRIB(demo_mode_write_protect);
 989 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 990 /*
 991  * Define iscsi_tpg_attrib_s_prod_mode_write_protect
 992  */
 993 DEF_TPG_ATTRIB(prod_mode_write_protect);
 994 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 995 /*
 996  * Define iscsi_tpg_attrib_s_demo_mode_discovery,
 997  */
 998 DEF_TPG_ATTRIB(demo_mode_discovery);
 999 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
1000 /*
1001  * Define iscsi_tpg_attrib_s_default_erl
1002  */
1003 DEF_TPG_ATTRIB(default_erl);
1004 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
1005 /*
1006  * Define iscsi_tpg_attrib_s_t10_pi
1007  */
1008 DEF_TPG_ATTRIB(t10_pi);
1009 TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR);
1010 /*
1011  * Define iscsi_tpg_attrib_s_fabric_prot_type
1012  */
1013 DEF_TPG_ATTRIB(fabric_prot_type);
1014 TPG_ATTR(fabric_prot_type, S_IRUGO | S_IWUSR);
1015 /*
1016  * Define iscsi_tpg_attrib_s_tpg_enabled_sendtargets
1017  */
1018 DEF_TPG_ATTRIB(tpg_enabled_sendtargets);
1019 TPG_ATTR(tpg_enabled_sendtargets, S_IRUGO | S_IWUSR);
1020
1021 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1022         &iscsi_tpg_attrib_authentication.attr,
1023         &iscsi_tpg_attrib_login_timeout.attr,
1024         &iscsi_tpg_attrib_netif_timeout.attr,
1025         &iscsi_tpg_attrib_generate_node_acls.attr,
1026         &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1027         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1028         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1029         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1030         &iscsi_tpg_attrib_demo_mode_discovery.attr,
1031         &iscsi_tpg_attrib_default_erl.attr,
1032         &iscsi_tpg_attrib_t10_pi.attr,
1033         &iscsi_tpg_attrib_fabric_prot_type.attr,
1034         &iscsi_tpg_attrib_tpg_enabled_sendtargets.attr,
1035         NULL,
1036 };
1037
1038 /* End items for lio_target_tpg_attrib_cit */
1039
1040 /* Start items for lio_target_tpg_auth_cit */
1041
1042 #define __DEF_TPG_AUTH_STR(prefix, name, flags)                                 \
1043 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1044         struct se_portal_group *se_tpg,                                         \
1045         char *page)                                                             \
1046 {                                                                               \
1047         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1048                                 struct iscsi_portal_group, tpg_se_tpg);         \
1049         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1050                                                                                 \
1051         if (!capable(CAP_SYS_ADMIN))                                            \
1052                 return -EPERM;                                                  \
1053                                                                                 \
1054         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);                   \
1055 }                                                                               \
1056                                                                                 \
1057 static ssize_t __iscsi_##prefix##_store_##name(                                 \
1058         struct se_portal_group *se_tpg,                                         \
1059         const char *page,                                                       \
1060         size_t count)                                                           \
1061 {                                                                               \
1062         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1063                                 struct iscsi_portal_group, tpg_se_tpg);         \
1064         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1065                                                                                 \
1066         if (!capable(CAP_SYS_ADMIN))                                            \
1067                 return -EPERM;                                                  \
1068                                                                                 \
1069         snprintf(auth->name, sizeof(auth->name), "%s", page);                   \
1070         if (!(strncmp("NULL", auth->name, 4)))                                  \
1071                 auth->naf_flags &= ~flags;                                      \
1072         else                                                                    \
1073                 auth->naf_flags |= flags;                                       \
1074                                                                                 \
1075         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                            \
1076             (auth->naf_flags & NAF_PASSWORD_IN_SET))                            \
1077                 auth->authenticate_target = 1;                                  \
1078         else                                                                    \
1079                 auth->authenticate_target = 0;                                  \
1080                                                                                 \
1081         return count;                                                           \
1082 }
1083
1084 #define __DEF_TPG_AUTH_INT(prefix, name)                                        \
1085 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1086         struct se_portal_group *se_tpg,                                         \
1087         char *page)                                                             \
1088 {                                                                               \
1089         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1090                                 struct iscsi_portal_group, tpg_se_tpg);         \
1091         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1092                                                                                 \
1093         if (!capable(CAP_SYS_ADMIN))                                            \
1094                 return -EPERM;                                                  \
1095                                                                                 \
1096         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);                   \
1097 }
1098
1099 #define DEF_TPG_AUTH_STR(name, flags)                                           \
1100         __DEF_TPG_AUTH_STR(tpg_auth, name, flags)                               \
1101 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1102         struct se_portal_group *se_tpg,                                         \
1103         char *page)                                                             \
1104 {                                                                               \
1105         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1106 }                                                                               \
1107                                                                                 \
1108 static ssize_t iscsi_tpg_auth_store_##name(                                     \
1109         struct se_portal_group *se_tpg,                                         \
1110         const char *page,                                                       \
1111         size_t count)                                                           \
1112 {                                                                               \
1113         return __iscsi_tpg_auth_store_##name(se_tpg, page, count);              \
1114 }
1115
1116 #define DEF_TPG_AUTH_INT(name)                                                  \
1117         __DEF_TPG_AUTH_INT(tpg_auth, name)                                      \
1118 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1119         struct se_portal_group *se_tpg,                                         \
1120         char *page)                                                             \
1121 {                                                                               \
1122         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1123 }
1124
1125 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1126 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1127
1128 /*
1129  *  * One-way authentication userid
1130  *   */
1131 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1132 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1133 /*
1134  *  * One-way authentication password
1135  *   */
1136 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1137 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1138 /*
1139  *  * Enforce mutual authentication
1140  *   */
1141 DEF_TPG_AUTH_INT(authenticate_target);
1142 TPG_AUTH_ATTR_RO(authenticate_target);
1143 /*
1144  *  * Mutual authentication userid
1145  *   */
1146 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1147 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1148 /*
1149  *  * Mutual authentication password
1150  *   */
1151 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1152 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1153
1154 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1155         &iscsi_tpg_auth_userid.attr,
1156         &iscsi_tpg_auth_password.attr,
1157         &iscsi_tpg_auth_authenticate_target.attr,
1158         &iscsi_tpg_auth_userid_mutual.attr,
1159         &iscsi_tpg_auth_password_mutual.attr,
1160         NULL,
1161 };
1162
1163 /* End items for lio_target_tpg_auth_cit */
1164
1165 /* Start items for lio_target_tpg_param_cit */
1166
1167 #define DEF_TPG_PARAM(name)                                             \
1168 static ssize_t iscsi_tpg_param_show_##name(                             \
1169         struct se_portal_group *se_tpg,                                 \
1170         char *page)                                                     \
1171 {                                                                       \
1172         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1173                         struct iscsi_portal_group, tpg_se_tpg);         \
1174         struct iscsi_param *param;                                      \
1175         ssize_t rb;                                                     \
1176                                                                         \
1177         if (iscsit_get_tpg(tpg) < 0)                                    \
1178                 return -EINVAL;                                         \
1179                                                                         \
1180         param = iscsi_find_param_from_key(__stringify(name),            \
1181                                 tpg->param_list);                       \
1182         if (!param) {                                                   \
1183                 iscsit_put_tpg(tpg);                                    \
1184                 return -EINVAL;                                         \
1185         }                                                               \
1186         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
1187                                                                         \
1188         iscsit_put_tpg(tpg);                                            \
1189         return rb;                                                      \
1190 }                                                                       \
1191 static ssize_t iscsi_tpg_param_store_##name(                            \
1192         struct se_portal_group *se_tpg,                         \
1193         const char *page,                                               \
1194         size_t count)                                                   \
1195 {                                                                       \
1196         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1197                         struct iscsi_portal_group, tpg_se_tpg);         \
1198         char *buf;                                                      \
1199         int ret, len;                                                   \
1200                                                                         \
1201         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1202         if (!buf)                                                       \
1203                 return -ENOMEM;                                         \
1204         len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);       \
1205         if (isspace(buf[len-1]))                                        \
1206                 buf[len-1] = '\0'; /* Kill newline */                   \
1207                                                                         \
1208         if (iscsit_get_tpg(tpg) < 0) {                                  \
1209                 kfree(buf);                                             \
1210                 return -EINVAL;                                         \
1211         }                                                               \
1212                                                                         \
1213         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1214         if (ret < 0)                                                    \
1215                 goto out;                                               \
1216                                                                         \
1217         kfree(buf);                                                     \
1218         iscsit_put_tpg(tpg);                                            \
1219         return count;                                                   \
1220 out:                                                                    \
1221         kfree(buf);                                                     \
1222         iscsit_put_tpg(tpg);                                            \
1223         return -EINVAL;                                         \
1224 }
1225
1226 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1227
1228 DEF_TPG_PARAM(AuthMethod);
1229 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1230
1231 DEF_TPG_PARAM(HeaderDigest);
1232 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1233
1234 DEF_TPG_PARAM(DataDigest);
1235 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1236
1237 DEF_TPG_PARAM(MaxConnections);
1238 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1239
1240 DEF_TPG_PARAM(TargetAlias);
1241 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1242
1243 DEF_TPG_PARAM(InitialR2T);
1244 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1245
1246 DEF_TPG_PARAM(ImmediateData);
1247 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1248
1249 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1250 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1251
1252 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1253 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1254
1255 DEF_TPG_PARAM(MaxBurstLength);
1256 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1257
1258 DEF_TPG_PARAM(FirstBurstLength);
1259 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1260
1261 DEF_TPG_PARAM(DefaultTime2Wait);
1262 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1263
1264 DEF_TPG_PARAM(DefaultTime2Retain);
1265 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1266
1267 DEF_TPG_PARAM(MaxOutstandingR2T);
1268 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1269
1270 DEF_TPG_PARAM(DataPDUInOrder);
1271 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1272
1273 DEF_TPG_PARAM(DataSequenceInOrder);
1274 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1275
1276 DEF_TPG_PARAM(ErrorRecoveryLevel);
1277 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1278
1279 DEF_TPG_PARAM(IFMarker);
1280 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1281
1282 DEF_TPG_PARAM(OFMarker);
1283 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1284
1285 DEF_TPG_PARAM(IFMarkInt);
1286 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1287
1288 DEF_TPG_PARAM(OFMarkInt);
1289 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1290
1291 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1292         &iscsi_tpg_param_AuthMethod.attr,
1293         &iscsi_tpg_param_HeaderDigest.attr,
1294         &iscsi_tpg_param_DataDigest.attr,
1295         &iscsi_tpg_param_MaxConnections.attr,
1296         &iscsi_tpg_param_TargetAlias.attr,
1297         &iscsi_tpg_param_InitialR2T.attr,
1298         &iscsi_tpg_param_ImmediateData.attr,
1299         &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1300         &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1301         &iscsi_tpg_param_MaxBurstLength.attr,
1302         &iscsi_tpg_param_FirstBurstLength.attr,
1303         &iscsi_tpg_param_DefaultTime2Wait.attr,
1304         &iscsi_tpg_param_DefaultTime2Retain.attr,
1305         &iscsi_tpg_param_MaxOutstandingR2T.attr,
1306         &iscsi_tpg_param_DataPDUInOrder.attr,
1307         &iscsi_tpg_param_DataSequenceInOrder.attr,
1308         &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1309         &iscsi_tpg_param_IFMarker.attr,
1310         &iscsi_tpg_param_OFMarker.attr,
1311         &iscsi_tpg_param_IFMarkInt.attr,
1312         &iscsi_tpg_param_OFMarkInt.attr,
1313         NULL,
1314 };
1315
1316 /* End items for lio_target_tpg_param_cit */
1317
1318 /* Start items for lio_target_tpg_cit */
1319
1320 static ssize_t lio_target_tpg_show_enable(
1321         struct se_portal_group *se_tpg,
1322         char *page)
1323 {
1324         struct iscsi_portal_group *tpg = container_of(se_tpg,
1325                         struct iscsi_portal_group, tpg_se_tpg);
1326         ssize_t len;
1327
1328         spin_lock(&tpg->tpg_state_lock);
1329         len = sprintf(page, "%d\n",
1330                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1331         spin_unlock(&tpg->tpg_state_lock);
1332
1333         return len;
1334 }
1335
1336 static ssize_t lio_target_tpg_store_enable(
1337         struct se_portal_group *se_tpg,
1338         const char *page,
1339         size_t count)
1340 {
1341         struct iscsi_portal_group *tpg = container_of(se_tpg,
1342                         struct iscsi_portal_group, tpg_se_tpg);
1343         u32 op;
1344         int ret;
1345
1346         ret = kstrtou32(page, 0, &op);
1347         if (ret)
1348                 return ret;
1349         if ((op != 1) && (op != 0)) {
1350                 pr_err("Illegal value for tpg_enable: %u\n", op);
1351                 return -EINVAL;
1352         }
1353
1354         ret = iscsit_get_tpg(tpg);
1355         if (ret < 0)
1356                 return -EINVAL;
1357
1358         if (op) {
1359                 ret = iscsit_tpg_enable_portal_group(tpg);
1360                 if (ret < 0)
1361                         goto out;
1362         } else {
1363                 /*
1364                  * iscsit_tpg_disable_portal_group() assumes force=1
1365                  */
1366                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1367                 if (ret < 0)
1368                         goto out;
1369         }
1370
1371         iscsit_put_tpg(tpg);
1372         return count;
1373 out:
1374         iscsit_put_tpg(tpg);
1375         return -EINVAL;
1376 }
1377
1378 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1379
1380 static ssize_t lio_target_tpg_show_dynamic_sessions(
1381         struct se_portal_group *se_tpg,
1382         char *page)
1383 {
1384         return target_show_dynamic_sessions(se_tpg, page);
1385 }
1386
1387 TF_TPG_BASE_ATTR_RO(lio_target, dynamic_sessions);
1388
1389 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1390         &lio_target_tpg_enable.attr,
1391         &lio_target_tpg_dynamic_sessions.attr,
1392         NULL,
1393 };
1394
1395 /* End items for lio_target_tpg_cit */
1396
1397 /* Start items for lio_target_tiqn_cit */
1398
1399 static struct se_portal_group *lio_target_tiqn_addtpg(
1400         struct se_wwn *wwn,
1401         struct config_group *group,
1402         const char *name)
1403 {
1404         struct iscsi_portal_group *tpg;
1405         struct iscsi_tiqn *tiqn;
1406         char *tpgt_str;
1407         int ret;
1408         u16 tpgt;
1409
1410         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1411         /*
1412          * Only tpgt_# directory groups can be created below
1413          * target/iscsi/iqn.superturodiskarry/
1414          */
1415         tpgt_str = strstr(name, "tpgt_");
1416         if (!tpgt_str) {
1417                 pr_err("Unable to locate \"tpgt_#\" directory"
1418                                 " group\n");
1419                 return NULL;
1420         }
1421         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1422         ret = kstrtou16(tpgt_str, 0, &tpgt);
1423         if (ret)
1424                 return NULL;
1425
1426         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1427         if (!tpg)
1428                 return NULL;
1429
1430         ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);
1431         if (ret < 0)
1432                 return NULL;
1433
1434         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1435         if (ret != 0)
1436                 goto out;
1437
1438         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1439         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1440                         name);
1441         return &tpg->tpg_se_tpg;
1442 out:
1443         core_tpg_deregister(&tpg->tpg_se_tpg);
1444         kfree(tpg);
1445         return NULL;
1446 }
1447
1448 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1449 {
1450         struct iscsi_portal_group *tpg;
1451         struct iscsi_tiqn *tiqn;
1452
1453         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1454         tiqn = tpg->tpg_tiqn;
1455         /*
1456          * iscsit_tpg_del_portal_group() assumes force=1
1457          */
1458         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1459         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1460 }
1461
1462 /* End items for lio_target_tiqn_cit */
1463
1464 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1465
1466 static ssize_t lio_target_wwn_show_attr_lio_version(
1467         struct target_fabric_configfs *tf,
1468         char *page)
1469 {
1470         return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1471 }
1472
1473 TF_WWN_ATTR_RO(lio_target, lio_version);
1474
1475 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1476         &lio_target_wwn_lio_version.attr,
1477         NULL,
1478 };
1479
1480 static struct se_wwn *lio_target_call_coreaddtiqn(
1481         struct target_fabric_configfs *tf,
1482         struct config_group *group,
1483         const char *name)
1484 {
1485         struct config_group *stats_cg;
1486         struct iscsi_tiqn *tiqn;
1487
1488         tiqn = iscsit_add_tiqn((unsigned char *)name);
1489         if (IS_ERR(tiqn))
1490                 return ERR_CAST(tiqn);
1491         /*
1492          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1493          */
1494         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1495
1496         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1497                                 GFP_KERNEL);
1498         if (!stats_cg->default_groups) {
1499                 pr_err("Unable to allocate memory for"
1500                                 " stats_cg->default_groups\n");
1501                 iscsit_del_tiqn(tiqn);
1502                 return ERR_PTR(-ENOMEM);
1503         }
1504
1505         stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1506         stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1507         stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1508         stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1509         stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1510         stats_cg->default_groups[5] = NULL;
1511         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1512                         "iscsi_instance", &iscsi_stat_instance_cit);
1513         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1514                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1515         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1516                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1517         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1518                         "iscsi_login_stats", &iscsi_stat_login_cit);
1519         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1520                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1521
1522         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1523         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1524                         " %s\n", name);
1525         return &tiqn->tiqn_wwn;
1526 }
1527
1528 static void lio_target_call_coredeltiqn(
1529         struct se_wwn *wwn)
1530 {
1531         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1532         struct config_item *df_item;
1533         struct config_group *stats_cg;
1534         int i;
1535
1536         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1537         for (i = 0; stats_cg->default_groups[i]; i++) {
1538                 df_item = &stats_cg->default_groups[i]->cg_item;
1539                 stats_cg->default_groups[i] = NULL;
1540                 config_item_put(df_item);
1541         }
1542         kfree(stats_cg->default_groups);
1543
1544         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1545                         tiqn->tiqn);
1546         iscsit_del_tiqn(tiqn);
1547 }
1548
1549 /* End LIO-Target TIQN struct contig_lio_target_cit */
1550
1551 /* Start lio_target_discovery_auth_cit */
1552
1553 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1554         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1555 static ssize_t iscsi_disc_show_##name(                                  \
1556         struct target_fabric_configfs *tf,                              \
1557         char *page)                                                     \
1558 {                                                                       \
1559         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1560                 page);                                                  \
1561 }                                                                       \
1562 static ssize_t iscsi_disc_store_##name(                                 \
1563         struct target_fabric_configfs *tf,                              \
1564         const char *page,                                               \
1565         size_t count)                                                   \
1566 {                                                                       \
1567         return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1568                 page, count);                                           \
1569 }
1570
1571 #define DEF_DISC_AUTH_INT(name)                                         \
1572         __DEF_NACL_AUTH_INT(disc, name)                                 \
1573 static ssize_t iscsi_disc_show_##name(                                  \
1574         struct target_fabric_configfs *tf,                              \
1575         char *page)                                                     \
1576 {                                                                       \
1577         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1578                         page);                                          \
1579 }
1580
1581 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1582 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1583
1584 /*
1585  * One-way authentication userid
1586  */
1587 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1588 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1589 /*
1590  * One-way authentication password
1591  */
1592 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1593 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1594 /*
1595  * Enforce mutual authentication
1596  */
1597 DEF_DISC_AUTH_INT(authenticate_target);
1598 DISC_AUTH_ATTR_RO(authenticate_target);
1599 /*
1600  * Mutual authentication userid
1601  */
1602 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1603 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1604 /*
1605  * Mutual authentication password
1606  */
1607 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1608 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1609
1610 /*
1611  * enforce_discovery_auth
1612  */
1613 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1614         struct target_fabric_configfs *tf,
1615         char *page)
1616 {
1617         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1618
1619         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1620 }
1621
1622 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1623         struct target_fabric_configfs *tf,
1624         const char *page,
1625         size_t count)
1626 {
1627         struct iscsi_param *param;
1628         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1629         u32 op;
1630         int err;
1631
1632         err = kstrtou32(page, 0, &op);
1633         if (err)
1634                 return -EINVAL;
1635         if ((op != 1) && (op != 0)) {
1636                 pr_err("Illegal value for enforce_discovery_auth:"
1637                                 " %u\n", op);
1638                 return -EINVAL;
1639         }
1640
1641         if (!discovery_tpg) {
1642                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1643                 return -EINVAL;
1644         }
1645
1646         param = iscsi_find_param_from_key(AUTHMETHOD,
1647                                 discovery_tpg->param_list);
1648         if (!param)
1649                 return -EINVAL;
1650
1651         if (op) {
1652                 /*
1653                  * Reset the AuthMethod key to CHAP.
1654                  */
1655                 if (iscsi_update_param_value(param, CHAP) < 0)
1656                         return -EINVAL;
1657
1658                 discovery_tpg->tpg_attrib.authentication = 1;
1659                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1660                 pr_debug("LIO-CORE[0] Successfully enabled"
1661                         " authentication enforcement for iSCSI"
1662                         " Discovery TPG\n");
1663         } else {
1664                 /*
1665                  * Reset the AuthMethod key to CHAP,None
1666                  */
1667                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1668                         return -EINVAL;
1669
1670                 discovery_tpg->tpg_attrib.authentication = 0;
1671                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1672                 pr_debug("LIO-CORE[0] Successfully disabled"
1673                         " authentication enforcement for iSCSI"
1674                         " Discovery TPG\n");
1675         }
1676
1677         return count;
1678 }
1679
1680 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1681
1682 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1683         &iscsi_disc_userid.attr,
1684         &iscsi_disc_password.attr,
1685         &iscsi_disc_authenticate_target.attr,
1686         &iscsi_disc_userid_mutual.attr,
1687         &iscsi_disc_password_mutual.attr,
1688         &iscsi_disc_enforce_discovery_auth.attr,
1689         NULL,
1690 };
1691
1692 /* End lio_target_discovery_auth_cit */
1693
1694 /* Start functions for target_core_fabric_ops */
1695
1696 static char *iscsi_get_fabric_name(void)
1697 {
1698         return "iSCSI";
1699 }
1700
1701 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1702 {
1703         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1704
1705         return cmd->i_state;
1706 }
1707
1708 static u32 lio_sess_get_index(struct se_session *se_sess)
1709 {
1710         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1711
1712         return sess->session_index;
1713 }
1714
1715 static u32 lio_sess_get_initiator_sid(
1716         struct se_session *se_sess,
1717         unsigned char *buf,
1718         u32 size)
1719 {
1720         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1721         /*
1722          * iSCSI Initiator Session Identifier from RFC-3720.
1723          */
1724         return snprintf(buf, size, "%6phN", sess->isid);
1725 }
1726
1727 static int lio_queue_data_in(struct se_cmd *se_cmd)
1728 {
1729         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1730
1731         cmd->i_state = ISTATE_SEND_DATAIN;
1732         cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1733
1734         return 0;
1735 }
1736
1737 static int lio_write_pending(struct se_cmd *se_cmd)
1738 {
1739         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1740         struct iscsi_conn *conn = cmd->conn;
1741
1742         if (!cmd->immediate_data && !cmd->unsolicited_data)
1743                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1744
1745         return 0;
1746 }
1747
1748 static int lio_write_pending_status(struct se_cmd *se_cmd)
1749 {
1750         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1751         int ret;
1752
1753         spin_lock_bh(&cmd->istate_lock);
1754         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1755         spin_unlock_bh(&cmd->istate_lock);
1756
1757         return ret;
1758 }
1759
1760 static int lio_queue_status(struct se_cmd *se_cmd)
1761 {
1762         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1763
1764         cmd->i_state = ISTATE_SEND_STATUS;
1765
1766         if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1767                 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1768                 return 0;
1769         }
1770         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1771
1772         return 0;
1773 }
1774
1775 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1776 {
1777         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1778
1779         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1780         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1781 }
1782
1783 static void lio_aborted_task(struct se_cmd *se_cmd)
1784 {
1785         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1786
1787         cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1788 }
1789
1790 static inline struct iscsi_portal_group *iscsi_tpg(struct se_portal_group *se_tpg)
1791 {
1792         return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1793 }
1794
1795 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1796 {
1797         return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
1798 }
1799
1800 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1801 {
1802         return iscsi_tpg(se_tpg)->tpgt;
1803 }
1804
1805 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1806 {
1807         return iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
1808 }
1809
1810 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1811 {
1812         return iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
1813 }
1814
1815 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1816 {
1817         return iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
1818 }
1819
1820 static int lio_tpg_check_demo_mode_write_protect(
1821         struct se_portal_group *se_tpg)
1822 {
1823         return iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
1824 }
1825
1826 static int lio_tpg_check_prod_mode_write_protect(
1827         struct se_portal_group *se_tpg)
1828 {
1829         return iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
1830 }
1831
1832 static int lio_tpg_check_prot_fabric_only(
1833         struct se_portal_group *se_tpg)
1834 {
1835         /*
1836          * Only report fabric_prot_type if t10_pi has also been enabled
1837          * for incoming ib_isert sessions.
1838          */
1839         if (!iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
1840                 return 0;
1841         return iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
1842 }
1843
1844 /*
1845  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1846  *
1847  * Also, this function calls iscsit_inc_session_usage_count() on the
1848  * struct iscsi_session in question.
1849  */
1850 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1851 {
1852         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1853
1854         spin_lock(&sess->conn_lock);
1855         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1856             atomic_read(&sess->session_logout) ||
1857             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1858                 spin_unlock(&sess->conn_lock);
1859                 return 0;
1860         }
1861         atomic_set(&sess->session_reinstatement, 1);
1862         spin_unlock(&sess->conn_lock);
1863
1864         iscsit_stop_time2retain_timer(sess);
1865         iscsit_stop_session(sess, 1, 1);
1866
1867         return 1;
1868 }
1869
1870 /*
1871  * Calls iscsit_dec_session_usage_count() as inverse of
1872  * lio_tpg_shutdown_session()
1873  */
1874 static void lio_tpg_close_session(struct se_session *se_sess)
1875 {
1876         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1877         /*
1878          * If the iSCSI Session for the iSCSI Initiator Node exists,
1879          * forcefully shutdown the iSCSI NEXUS.
1880          */
1881         iscsit_close_session(sess);
1882 }
1883
1884 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1885 {
1886         return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
1887 }
1888
1889 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1890 {
1891         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1892                                 se_node_acl);
1893         struct se_portal_group *se_tpg = se_acl->se_tpg;
1894         struct iscsi_portal_group *tpg = container_of(se_tpg,
1895                                 struct iscsi_portal_group, tpg_se_tpg);
1896
1897         acl->node_attrib.nacl = acl;
1898         iscsit_set_default_node_attribues(acl, tpg);
1899 }
1900
1901 static int lio_check_stop_free(struct se_cmd *se_cmd)
1902 {
1903         return target_put_sess_cmd(se_cmd);
1904 }
1905
1906 static void lio_release_cmd(struct se_cmd *se_cmd)
1907 {
1908         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1909
1910         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1911         iscsit_release_cmd(cmd);
1912 }
1913
1914 const struct target_core_fabric_ops iscsi_ops = {
1915         .module                         = THIS_MODULE,
1916         .name                           = "iscsi",
1917         .node_acl_size                  = sizeof(struct iscsi_node_acl),
1918         .get_fabric_name                = iscsi_get_fabric_name,
1919         .tpg_get_wwn                    = lio_tpg_get_endpoint_wwn,
1920         .tpg_get_tag                    = lio_tpg_get_tag,
1921         .tpg_get_default_depth          = lio_tpg_get_default_depth,
1922         .tpg_check_demo_mode            = lio_tpg_check_demo_mode,
1923         .tpg_check_demo_mode_cache      = lio_tpg_check_demo_mode_cache,
1924         .tpg_check_demo_mode_write_protect =
1925                         lio_tpg_check_demo_mode_write_protect,
1926         .tpg_check_prod_mode_write_protect =
1927                         lio_tpg_check_prod_mode_write_protect,
1928         .tpg_check_prot_fabric_only     = &lio_tpg_check_prot_fabric_only,
1929         .tpg_get_inst_index             = lio_tpg_get_inst_index,
1930         .check_stop_free                = lio_check_stop_free,
1931         .release_cmd                    = lio_release_cmd,
1932         .shutdown_session               = lio_tpg_shutdown_session,
1933         .close_session                  = lio_tpg_close_session,
1934         .sess_get_index                 = lio_sess_get_index,
1935         .sess_get_initiator_sid         = lio_sess_get_initiator_sid,
1936         .write_pending                  = lio_write_pending,
1937         .write_pending_status           = lio_write_pending_status,
1938         .set_default_node_attributes    = lio_set_default_node_attributes,
1939         .get_cmd_state                  = iscsi_get_cmd_state,
1940         .queue_data_in                  = lio_queue_data_in,
1941         .queue_status                   = lio_queue_status,
1942         .queue_tm_rsp                   = lio_queue_tm_rsp,
1943         .aborted_task                   = lio_aborted_task,
1944         .fabric_make_wwn                = lio_target_call_coreaddtiqn,
1945         .fabric_drop_wwn                = lio_target_call_coredeltiqn,
1946         .fabric_make_tpg                = lio_target_tiqn_addtpg,
1947         .fabric_drop_tpg                = lio_target_tiqn_deltpg,
1948         .fabric_make_np                 = lio_target_call_addnptotpg,
1949         .fabric_drop_np                 = lio_target_call_delnpfromtpg,
1950         .fabric_init_nodeacl            = lio_target_init_nodeacl,
1951         .fabric_cleanup_nodeacl         = lio_target_cleanup_nodeacl,
1952
1953         .tfc_discovery_attrs            = lio_target_discovery_auth_attrs,
1954         .tfc_wwn_attrs                  = lio_target_wwn_attrs,
1955         .tfc_tpg_base_attrs             = lio_target_tpg_attrs,
1956         .tfc_tpg_attrib_attrs           = lio_target_tpg_attrib_attrs,
1957         .tfc_tpg_auth_attrs             = lio_target_tpg_auth_attrs,
1958         .tfc_tpg_param_attrs            = lio_target_tpg_param_attrs,
1959         .tfc_tpg_np_base_attrs          = lio_target_portal_attrs,
1960         .tfc_tpg_nacl_base_attrs        = lio_target_initiator_attrs,
1961         .tfc_tpg_nacl_attrib_attrs      = lio_target_nacl_attrib_attrs,
1962         .tfc_tpg_nacl_auth_attrs        = lio_target_nacl_auth_attrs,
1963         .tfc_tpg_nacl_param_attrs       = lio_target_nacl_param_attrs,
1964 };