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/target_core_configfs.h>
  28 #include <target/configfs_macros.h>
  29 #include <target/iscsi/iscsi_transport.h>
  30
  31 #include "iscsi_target_core.h"
  32 #include "iscsi_target_parameters.h"
  33 #include "iscsi_target_device.h"
  34 #include "iscsi_target_erl0.h"
  35 #include "iscsi_target_nodeattrib.h"
  36 #include "iscsi_target_tpg.h"
  37 #include "iscsi_target_util.h"
  38 #include "iscsi_target.h"
  39 #include "iscsi_target_stat.h"
  40 #include "iscsi_target_configfs.h"
  41
  42 struct target_fabric_configfs *lio_target_fabric_configfs;
  43
  44 struct lio_target_configfs_attribute {
  45         struct configfs_attribute attr;
  46         ssize_t (*show)(void *, char *);
  47         ssize_t (*store)(void *, const char *, size_t);
  48 };
  49
  50 /* Start items for lio_target_portal_cit */
  51
  52 static ssize_t lio_target_np_show_sctp(
  53         struct se_tpg_np *se_tpg_np,
  54         char *page)
  55 {
  56         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
  57                                 struct iscsi_tpg_np, se_tpg_np);
  58         struct iscsi_tpg_np *tpg_np_sctp;
  59         ssize_t rb;
  60
  61         tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
  62         if (tpg_np_sctp)
  63                 rb = sprintf(page, "1\n");
  64         else
  65                 rb = sprintf(page, "0\n");
  66
  67         return rb;
  68 }
  69
  70 static ssize_t lio_target_np_store_sctp(
  71         struct se_tpg_np *se_tpg_np,
  72         const char *page,
  73         size_t count)
  74 {
  75         struct iscsi_np *np;
  76         struct iscsi_portal_group *tpg;
  77         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
  78                                 struct iscsi_tpg_np, se_tpg_np);
  79         struct iscsi_tpg_np *tpg_np_sctp = NULL;
  80         u32 op;
  81         int ret;
  82
  83         ret = kstrtou32(page, 0, &op);
  84         if (ret)
  85                 return ret;
  86         if ((op != 1) && (op != 0)) {
  87                 pr_err("Illegal value for tpg_enable: %u\n", op);
  88                 return -EINVAL;
  89         }
  90         np = tpg_np->tpg_np;
  91         if (!np) {
  92                 pr_err("Unable to locate struct iscsi_np from"
  93                                 " struct iscsi_tpg_np\n");
  94                 return -EINVAL;
  95         }
  96
  97         tpg = tpg_np->tpg;
  98         if (iscsit_get_tpg(tpg) < 0)
  99                 return -EINVAL;
 100
 101         if (op) {
 102                 /*
 103                  * Use existing np->np_sockaddr for SCTP network portal reference
 104                  */
 105                 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 106                                         np->np_ip, tpg_np, ISCSI_SCTP_TCP);
 107                 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
 108                         goto out;
 109         } else {
 110                 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
 111                 if (!tpg_np_sctp)
 112                         goto out;
 113
 114                 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
 115                 if (ret < 0)
 116                         goto out;
 117         }
 118
 119         iscsit_put_tpg(tpg);
 120         return count;
 121 out:
 122         iscsit_put_tpg(tpg);
 123         return -EINVAL;
 124 }
 125
 126 TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
 127
 128 static ssize_t lio_target_np_show_iser(
 129         struct se_tpg_np *se_tpg_np,
 130         char *page)
 131 {
 132         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
 133                                 struct iscsi_tpg_np, se_tpg_np);
 134         struct iscsi_tpg_np *tpg_np_iser;
 135         ssize_t rb;
 136
 137         tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 138         if (tpg_np_iser)
 139                 rb = sprintf(page, "1\n");
 140         else
 141                 rb = sprintf(page, "0\n");
 142
 143         return rb;
 144 }
 145
 146 static ssize_t lio_target_np_store_iser(
 147         struct se_tpg_np *se_tpg_np,
 148         const char *page,
 149         size_t count)
 150 {
 151         struct iscsi_np *np;
 152         struct iscsi_portal_group *tpg;
 153         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
 154                                 struct iscsi_tpg_np, se_tpg_np);
 155         struct iscsi_tpg_np *tpg_np_iser = NULL;
 156         char *endptr;
 157         u32 op;
 158         int rc = 0;
 159
 160         op = simple_strtoul(page, &endptr, 0);
 161         if ((op != 1) && (op != 0)) {
 162                 pr_err("Illegal value for tpg_enable: %u\n", op);
 163                 return -EINVAL;
 164         }
 165         np = tpg_np->tpg_np;
 166         if (!np) {
 167                 pr_err("Unable to locate struct iscsi_np from"
 168                                 " struct iscsi_tpg_np\n");
 169                 return -EINVAL;
 170         }
 171
 172         tpg = tpg_np->tpg;
 173         if (iscsit_get_tpg(tpg) < 0)
 174                 return -EINVAL;
 175
 176         if (op) {
 177                 rc = request_module("ib_isert");
 178                 if (rc != 0) {
 179                         pr_warn("Unable to request_module for ib_isert\n");
 180                         rc = 0;
 181                 }
 182
 183                 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 184                                 np->np_ip, tpg_np, ISCSI_INFINIBAND);
 185                 if (IS_ERR(tpg_np_iser)) {
 186                         rc = PTR_ERR(tpg_np_iser);
 187                         goto out;
 188                 }
 189         } else {
 190                 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 191                 if (tpg_np_iser) {
 192                         rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
 193                         if (rc < 0)
 194                                 goto out;
 195                 }
 196         }
 197
 198         iscsit_put_tpg(tpg);
 199         return count;
 200 out:
 201         iscsit_put_tpg(tpg);
 202         return rc;
 203 }
 204
 205 TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
 206
 207 static struct configfs_attribute *lio_target_portal_attrs[] = {
 208         &lio_target_np_sctp.attr,
 209         &lio_target_np_iser.attr,
 210         NULL,
 211 };
 212
 213 /* Stop items for lio_target_portal_cit */
 214
 215 /* Start items for lio_target_np_cit */
 216
 217 #define MAX_PORTAL_LEN          256
 218
 219 static struct se_tpg_np *lio_target_call_addnptotpg(
 220         struct se_portal_group *se_tpg,
 221         struct config_group *group,
 222         const char *name)
 223 {
 224         struct iscsi_portal_group *tpg;
 225         struct iscsi_tpg_np *tpg_np;
 226         char *str, *str2, *ip_str, *port_str;
 227         struct __kernel_sockaddr_storage sockaddr;
 228         struct sockaddr_in *sock_in;
 229         struct sockaddr_in6 *sock_in6;
 230         unsigned long port;
 231         int ret;
 232         char buf[MAX_PORTAL_LEN + 1];
 233
 234         if (strlen(name) > MAX_PORTAL_LEN) {
 235                 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
 236                         (int)strlen(name), MAX_PORTAL_LEN);
 237                 return ERR_PTR(-EOVERFLOW);
 238         }
 239         memset(buf, 0, MAX_PORTAL_LEN + 1);
 240         snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
 241
 242         memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
 243
 244         str = strstr(buf, "[");
 245         if (str) {
 246                 const char *end;
 247
 248                 str2 = strstr(str, "]");
 249                 if (!str2) {
 250                         pr_err("Unable to locate trailing \"]\""
 251                                 " in IPv6 iSCSI network portal address\n");
 252                         return ERR_PTR(-EINVAL);
 253                 }
 254                 str++; /* Skip over leading "[" */
 255                 *str2 = '\0'; /* Terminate the IPv6 address */
 256                 str2++; /* Skip over the "]" */
 257                 port_str = strstr(str2, ":");
 258                 if (!port_str) {
 259                         pr_err("Unable to locate \":port\""
 260                                 " in IPv6 iSCSI network portal address\n");
 261                         return ERR_PTR(-EINVAL);
 262                 }
 263                 *port_str = '\0'; /* Terminate string for IP */
 264                 port_str++; /* Skip over ":" */
 265
 266                 ret = kstrtoul(port_str, 0, &port);
 267                 if (ret < 0) {
 268                         pr_err("kstrtoul() failed for port_str: %d\n", ret);
 269                         return ERR_PTR(ret);
 270                 }
 271                 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
 272                 sock_in6->sin6_family = AF_INET6;
 273                 sock_in6->sin6_port = htons((unsigned short)port);
 274                 ret = in6_pton(str, IPV6_ADDRESS_SPACE,
 275                                 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
 276                 if (ret <= 0) {
 277                         pr_err("in6_pton returned: %d\n", ret);
 278                         return ERR_PTR(-EINVAL);
 279                 }
 280         } else {
 281                 str = ip_str = &buf[0];
 282                 port_str = strstr(ip_str, ":");
 283                 if (!port_str) {
 284                         pr_err("Unable to locate \":port\""
 285                                 " in IPv4 iSCSI network portal address\n");
 286                         return ERR_PTR(-EINVAL);
 287                 }
 288                 *port_str = '\0'; /* Terminate string for IP */
 289                 port_str++; /* Skip over ":" */
 290
 291                 ret = kstrtoul(port_str, 0, &port);
 292                 if (ret < 0) {
 293                         pr_err("kstrtoul() failed for port_str: %d\n", ret);
 294                         return ERR_PTR(ret);
 295                 }
 296                 sock_in = (struct sockaddr_in *)&sockaddr;
 297                 sock_in->sin_family = AF_INET;
 298                 sock_in->sin_port = htons((unsigned short)port);
 299                 sock_in->sin_addr.s_addr = in_aton(ip_str);
 300         }
 301         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
 302         ret = iscsit_get_tpg(tpg);
 303         if (ret < 0)
 304                 return ERR_PTR(-EINVAL);
 305
 306         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
 307                 " PORTAL: %s\n",
 308                 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 309                 tpg->tpgt, name);
 310         /*
 311          * Assume ISCSI_TCP by default.  Other network portals for other
 312          * iSCSI fabrics:
 313          *
 314          * Traditional iSCSI over SCTP (initial support)
 315          * iSER/TCP (TODO, hardware available)
 316          * iSER/SCTP (TODO, software emulation with osc-iwarp)
 317          * iSER/IB (TODO, hardware available)
 318          *
 319          * can be enabled with attributes under
 320          * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
 321          *
 322          */
 323         tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
 324                                 ISCSI_TCP);
 325         if (IS_ERR(tpg_np)) {
 326                 iscsit_put_tpg(tpg);
 327                 return ERR_CAST(tpg_np);
 328         }
 329         pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
 330
 331         iscsit_put_tpg(tpg);
 332         return &tpg_np->se_tpg_np;
 333 }
 334
 335 static void lio_target_call_delnpfromtpg(
 336         struct se_tpg_np *se_tpg_np)
 337 {
 338         struct iscsi_portal_group *tpg;
 339         struct iscsi_tpg_np *tpg_np;
 340         struct se_portal_group *se_tpg;
 341         int ret;
 342
 343         tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
 344         tpg = tpg_np->tpg;
 345         ret = iscsit_get_tpg(tpg);
 346         if (ret < 0)
 347                 return;
 348
 349         se_tpg = &tpg->tpg_se_tpg;
 350         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
 351                 " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 352                 tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
 353
 354         ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
 355         if (ret < 0)
 356                 goto out;
 357
 358         pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
 359 out:
 360         iscsit_put_tpg(tpg);
 361 }
 362
 363 /* End items for lio_target_np_cit */
 364
 365 /* Start items for lio_target_nacl_attrib_cit */
 366
 367 #define DEF_NACL_ATTRIB(name)                                           \
 368 static ssize_t iscsi_nacl_attrib_show_##name(                           \
 369         struct se_node_acl *se_nacl,                                    \
 370         char *page)                                                     \
 371 {                                                                       \
 372         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 373                                         se_node_acl);                   \
 374                                                                         \
 375         return sprintf(page, "%u\n", nacl->node_attrib.name);           \
 376 }                                                                       \
 377                                                                         \
 378 static ssize_t iscsi_nacl_attrib_store_##name(                          \
 379         struct se_node_acl *se_nacl,                                    \
 380         const char *page,                                               \
 381         size_t count)                                                   \
 382 {                                                                       \
 383         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 384                                         se_node_acl);                   \
 385         u32 val;                                                        \
 386         int ret;                                                        \
 387                                                                         \
 388         ret = kstrtou32(page, 0, &val);                                 \
 389         if (ret)                                                        \
 390                 return ret;                                             \
 391         ret = iscsit_na_##name(nacl, val);                              \
 392         if (ret < 0)                                                    \
 393                 return ret;                                             \
 394                                                                         \
 395         return count;                                                   \
 396 }
 397
 398 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
 399 /*
 400  * Define iscsi_node_attrib_s_dataout_timeout
 401  */
 402 DEF_NACL_ATTRIB(dataout_timeout);
 403 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
 404 /*
 405  * Define iscsi_node_attrib_s_dataout_timeout_retries
 406  */
 407 DEF_NACL_ATTRIB(dataout_timeout_retries);
 408 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
 409 /*
 410  * Define iscsi_node_attrib_s_default_erl
 411  */
 412 DEF_NACL_ATTRIB(default_erl);
 413 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
 414 /*
 415  * Define iscsi_node_attrib_s_nopin_timeout
 416  */
 417 DEF_NACL_ATTRIB(nopin_timeout);
 418 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
 419 /*
 420  * Define iscsi_node_attrib_s_nopin_response_timeout
 421  */
 422 DEF_NACL_ATTRIB(nopin_response_timeout);
 423 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
 424 /*
 425  * Define iscsi_node_attrib_s_random_datain_pdu_offsets
 426  */
 427 DEF_NACL_ATTRIB(random_datain_pdu_offsets);
 428 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
 429 /*
 430  * Define iscsi_node_attrib_s_random_datain_seq_offsets
 431  */
 432 DEF_NACL_ATTRIB(random_datain_seq_offsets);
 433 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
 434 /*
 435  * Define iscsi_node_attrib_s_random_r2t_offsets
 436  */
 437 DEF_NACL_ATTRIB(random_r2t_offsets);
 438 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
 439
 440 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
 441         &iscsi_nacl_attrib_dataout_timeout.attr,
 442         &iscsi_nacl_attrib_dataout_timeout_retries.attr,
 443         &iscsi_nacl_attrib_default_erl.attr,
 444         &iscsi_nacl_attrib_nopin_timeout.attr,
 445         &iscsi_nacl_attrib_nopin_response_timeout.attr,
 446         &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
 447         &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
 448         &iscsi_nacl_attrib_random_r2t_offsets.attr,
 449         NULL,
 450 };
 451
 452 /* End items for lio_target_nacl_attrib_cit */
 453
 454 /* Start items for lio_target_nacl_auth_cit */
 455
 456 #define __DEF_NACL_AUTH_STR(prefix, name, flags)                        \
 457 static ssize_t __iscsi_##prefix##_show_##name(                          \
 458         struct iscsi_node_acl *nacl,                                    \
 459         char *page)                                                     \
 460 {                                                                       \
 461         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 462                                                                         \
 463         if (!capable(CAP_SYS_ADMIN))                                    \
 464                 return -EPERM;                                          \
 465         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);           \
 466 }                                                                       \
 467                                                                         \
 468 static ssize_t __iscsi_##prefix##_store_##name(                         \
 469         struct iscsi_node_acl *nacl,                                    \
 470         const char *page,                                               \
 471         size_t count)                                                   \
 472 {                                                                       \
 473         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 474                                                                         \
 475         if (!capable(CAP_SYS_ADMIN))                                    \
 476                 return -EPERM;                                          \
 477                                                                         \
 478         snprintf(auth->name, sizeof(auth->name), "%s", page);           \
 479         if (!strncmp("NULL", auth->name, 4))                            \
 480                 auth->naf_flags &= ~flags;                              \
 481         else                                                            \
 482                 auth->naf_flags |= flags;                               \
 483                                                                         \
 484         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                    \
 485             (auth->naf_flags & NAF_PASSWORD_IN_SET))                    \
 486                 auth->authenticate_target = 1;                          \
 487         else                                                            \
 488                 auth->authenticate_target = 0;                          \
 489                                                                         \
 490         return count;                                                   \
 491 }
 492
 493 #define __DEF_NACL_AUTH_INT(prefix, name)                               \
 494 static ssize_t __iscsi_##prefix##_show_##name(                          \
 495         struct iscsi_node_acl *nacl,                                    \
 496         char *page)                                                     \
 497 {                                                                       \
 498         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 499                                                                         \
 500         if (!capable(CAP_SYS_ADMIN))                                    \
 501                 return -EPERM;                                          \
 502                                                                         \
 503         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);           \
 504 }
 505
 506 #define DEF_NACL_AUTH_STR(name, flags)                                  \
 507         __DEF_NACL_AUTH_STR(nacl_auth, name, flags)                     \
 508 static ssize_t iscsi_nacl_auth_show_##name(                             \
 509         struct se_node_acl *nacl,                                       \
 510         char *page)                                                     \
 511 {                                                                       \
 512         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 513                         struct iscsi_node_acl, se_node_acl), page);             \
 514 }                                                                       \
 515 static ssize_t iscsi_nacl_auth_store_##name(                            \
 516         struct se_node_acl *nacl,                                       \
 517         const char *page,                                               \
 518         size_t count)                                                   \
 519 {                                                                       \
 520         return __iscsi_nacl_auth_store_##name(container_of(nacl,        \
 521                         struct iscsi_node_acl, se_node_acl), page, count);      \
 522 }
 523
 524 #define DEF_NACL_AUTH_INT(name)                                         \
 525         __DEF_NACL_AUTH_INT(nacl_auth, name)                            \
 526 static ssize_t iscsi_nacl_auth_show_##name(                             \
 527         struct se_node_acl *nacl,                                       \
 528         char *page)                                                     \
 529 {                                                                       \
 530         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 531                         struct iscsi_node_acl, se_node_acl), page);             \
 532 }
 533
 534 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
 535 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
 536
 537 /*
 538  * One-way authentication userid
 539  */
 540 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
 541 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
 542 /*
 543  * One-way authentication password
 544  */
 545 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
 546 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
 547 /*
 548  * Enforce mutual authentication
 549  */
 550 DEF_NACL_AUTH_INT(authenticate_target);
 551 AUTH_ATTR_RO(authenticate_target);
 552 /*
 553  * Mutual authentication userid
 554  */
 555 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
 556 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
 557 /*
 558  * Mutual authentication password
 559  */
 560 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
 561 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
 562
 563 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
 564         &iscsi_nacl_auth_userid.attr,
 565         &iscsi_nacl_auth_password.attr,
 566         &iscsi_nacl_auth_authenticate_target.attr,
 567         &iscsi_nacl_auth_userid_mutual.attr,
 568         &iscsi_nacl_auth_password_mutual.attr,
 569         NULL,
 570 };
 571
 572 /* End items for lio_target_nacl_auth_cit */
 573
 574 /* Start items for lio_target_nacl_param_cit */
 575
 576 #define DEF_NACL_PARAM(name)                                            \
 577 static ssize_t iscsi_nacl_param_show_##name(                            \
 578         struct se_node_acl *se_nacl,                                    \
 579         char *page)                                                     \
 580 {                                                                       \
 581         struct iscsi_session *sess;                                     \
 582         struct se_session *se_sess;                                     \
 583         ssize_t rb;                                                     \
 584                                                                         \
 585         spin_lock_bh(&se_nacl->nacl_sess_lock);                         \
 586         se_sess = se_nacl->nacl_sess;                                   \
 587         if (!se_sess) {                                                 \
 588                 rb = snprintf(page, PAGE_SIZE,                          \
 589                         "No Active iSCSI Session\n");                   \
 590         } else {                                                        \
 591                 sess = se_sess->fabric_sess_ptr;                        \
 592                 rb = snprintf(page, PAGE_SIZE, "%u\n",                  \
 593                         (u32)sess->sess_ops->name);                     \
 594         }                                                               \
 595         spin_unlock_bh(&se_nacl->nacl_sess_lock);                       \
 596                                                                         \
 597         return rb;                                                      \
 598 }
 599
 600 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
 601
 602 DEF_NACL_PARAM(MaxConnections);
 603 NACL_PARAM_ATTR(MaxConnections);
 604
 605 DEF_NACL_PARAM(InitialR2T);
 606 NACL_PARAM_ATTR(InitialR2T);
 607
 608 DEF_NACL_PARAM(ImmediateData);
 609 NACL_PARAM_ATTR(ImmediateData);
 610
 611 DEF_NACL_PARAM(MaxBurstLength);
 612 NACL_PARAM_ATTR(MaxBurstLength);
 613
 614 DEF_NACL_PARAM(FirstBurstLength);
 615 NACL_PARAM_ATTR(FirstBurstLength);
 616
 617 DEF_NACL_PARAM(DefaultTime2Wait);
 618 NACL_PARAM_ATTR(DefaultTime2Wait);
 619
 620 DEF_NACL_PARAM(DefaultTime2Retain);
 621 NACL_PARAM_ATTR(DefaultTime2Retain);
 622
 623 DEF_NACL_PARAM(MaxOutstandingR2T);
 624 NACL_PARAM_ATTR(MaxOutstandingR2T);
 625
 626 DEF_NACL_PARAM(DataPDUInOrder);
 627 NACL_PARAM_ATTR(DataPDUInOrder);
 628
 629 DEF_NACL_PARAM(DataSequenceInOrder);
 630 NACL_PARAM_ATTR(DataSequenceInOrder);
 631
 632 DEF_NACL_PARAM(ErrorRecoveryLevel);
 633 NACL_PARAM_ATTR(ErrorRecoveryLevel);
 634
 635 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
 636         &iscsi_nacl_param_MaxConnections.attr,
 637         &iscsi_nacl_param_InitialR2T.attr,
 638         &iscsi_nacl_param_ImmediateData.attr,
 639         &iscsi_nacl_param_MaxBurstLength.attr,
 640         &iscsi_nacl_param_FirstBurstLength.attr,
 641         &iscsi_nacl_param_DefaultTime2Wait.attr,
 642         &iscsi_nacl_param_DefaultTime2Retain.attr,
 643         &iscsi_nacl_param_MaxOutstandingR2T.attr,
 644         &iscsi_nacl_param_DataPDUInOrder.attr,
 645         &iscsi_nacl_param_DataSequenceInOrder.attr,
 646         &iscsi_nacl_param_ErrorRecoveryLevel.attr,
 647         NULL,
 648 };
 649
 650 /* End items for lio_target_nacl_param_cit */
 651
 652 /* Start items for lio_target_acl_cit */
 653
 654 static ssize_t lio_target_nacl_show_info(
 655         struct se_node_acl *se_nacl,
 656         char *page)
 657 {
 658         struct iscsi_session *sess;
 659         struct iscsi_conn *conn;
 660         struct se_session *se_sess;
 661         ssize_t rb = 0;
 662
 663         spin_lock_bh(&se_nacl->nacl_sess_lock);
 664         se_sess = se_nacl->nacl_sess;
 665         if (!se_sess) {
 666                 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
 667                         " Endpoint: %s\n", se_nacl->initiatorname);
 668         } else {
 669                 sess = se_sess->fabric_sess_ptr;
 670
 671                 if (sess->sess_ops->InitiatorName)
 672                         rb += sprintf(page+rb, "InitiatorName: %s\n",
 673                                 sess->sess_ops->InitiatorName);
 674                 if (sess->sess_ops->InitiatorAlias)
 675                         rb += sprintf(page+rb, "InitiatorAlias: %s\n",
 676                                 sess->sess_ops->InitiatorAlias);
 677
 678                 rb += sprintf(page+rb, "LIO Session ID: %u   "
 679                         "ISID: 0x%02x %02x %02x %02x %02x %02x  "
 680                         "TSIH: %hu  ", sess->sid,
 681                         sess->isid[0], sess->isid[1], sess->isid[2],
 682                         sess->isid[3], sess->isid[4], sess->isid[5],
 683                         sess->tsih);
 684                 rb += sprintf(page+rb, "SessionType: %s\n",
 685                                 (sess->sess_ops->SessionType) ?
 686                                 "Discovery" : "Normal");
 687                 rb += sprintf(page+rb, "Session State: ");
 688                 switch (sess->session_state) {
 689                 case TARG_SESS_STATE_FREE:
 690                         rb += sprintf(page+rb, "TARG_SESS_FREE\n");
 691                         break;
 692                 case TARG_SESS_STATE_ACTIVE:
 693                         rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
 694                         break;
 695                 case TARG_SESS_STATE_LOGGED_IN:
 696                         rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
 697                         break;
 698                 case TARG_SESS_STATE_FAILED:
 699                         rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
 700                         break;
 701                 case TARG_SESS_STATE_IN_CONTINUE:
 702                         rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
 703                         break;
 704                 default:
 705                         rb += sprintf(page+rb, "ERROR: Unknown Session"
 706                                         " State!\n");
 707                         break;
 708                 }
 709
 710                 rb += sprintf(page+rb, "---------------------[iSCSI Session"
 711                                 " Values]-----------------------\n");
 712                 rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
 713                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
 714                 rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
 715                                 "   0x%08x   0x%08x\n",
 716                         sess->cmdsn_window,
 717                         (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
 718                         sess->exp_cmd_sn, sess->max_cmd_sn,
 719                         sess->init_task_tag, sess->targ_xfer_tag);
 720                 rb += sprintf(page+rb, "----------------------[iSCSI"
 721                                 " Connections]-------------------------\n");
 722
 723                 spin_lock(&sess->conn_lock);
 724                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
 725                         rb += sprintf(page+rb, "CID: %hu  Connection"
 726                                         " State: ", conn->cid);
 727                         switch (conn->conn_state) {
 728                         case TARG_CONN_STATE_FREE:
 729                                 rb += sprintf(page+rb,
 730                                         "TARG_CONN_STATE_FREE\n");
 731                                 break;
 732                         case TARG_CONN_STATE_XPT_UP:
 733                                 rb += sprintf(page+rb,
 734                                         "TARG_CONN_STATE_XPT_UP\n");
 735                                 break;
 736                         case TARG_CONN_STATE_IN_LOGIN:
 737                                 rb += sprintf(page+rb,
 738                                         "TARG_CONN_STATE_IN_LOGIN\n");
 739                                 break;
 740                         case TARG_CONN_STATE_LOGGED_IN:
 741                                 rb += sprintf(page+rb,
 742                                         "TARG_CONN_STATE_LOGGED_IN\n");
 743                                 break;
 744                         case TARG_CONN_STATE_IN_LOGOUT:
 745                                 rb += sprintf(page+rb,
 746                                         "TARG_CONN_STATE_IN_LOGOUT\n");
 747                                 break;
 748                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
 749                                 rb += sprintf(page+rb,
 750                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
 751                                 break;
 752                         case TARG_CONN_STATE_CLEANUP_WAIT:
 753                                 rb += sprintf(page+rb,
 754                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
 755                                 break;
 756                         default:
 757                                 rb += sprintf(page+rb,
 758                                         "ERROR: Unknown Connection State!\n");
 759                                 break;
 760                         }
 761
 762                         rb += sprintf(page+rb, "   Address %s %s", conn->login_ip,
 763                                 (conn->network_transport == ISCSI_TCP) ?
 764                                 "TCP" : "SCTP");
 765                         rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
 766                                 conn->stat_sn);
 767                 }
 768                 spin_unlock(&sess->conn_lock);
 769         }
 770         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 771
 772         return rb;
 773 }
 774
 775 TF_NACL_BASE_ATTR_RO(lio_target, info);
 776
 777 static ssize_t lio_target_nacl_show_cmdsn_depth(
 778         struct se_node_acl *se_nacl,
 779         char *page)
 780 {
 781         return sprintf(page, "%u\n", se_nacl->queue_depth);
 782 }
 783
 784 static ssize_t lio_target_nacl_store_cmdsn_depth(
 785         struct se_node_acl *se_nacl,
 786         const char *page,
 787         size_t count)
 788 {
 789         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 790         struct iscsi_portal_group *tpg = container_of(se_tpg,
 791                         struct iscsi_portal_group, tpg_se_tpg);
 792         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
 793         u32 cmdsn_depth = 0;
 794         int ret;
 795
 796         ret = kstrtou32(page, 0, &cmdsn_depth);
 797         if (ret)
 798                 return ret;
 799         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 800                 pr_err("Passed cmdsn_depth: %u exceeds"
 801                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
 802                         TA_DEFAULT_CMDSN_DEPTH_MAX);
 803                 return -EINVAL;
 804         }
 805         acl_ci = &se_nacl->acl_group.cg_item;
 806         if (!acl_ci) {
 807                 pr_err("Unable to locatel acl_ci\n");
 808                 return -EINVAL;
 809         }
 810         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
 811         if (!tpg_ci) {
 812                 pr_err("Unable to locate tpg_ci\n");
 813                 return -EINVAL;
 814         }
 815         wwn_ci = &tpg_ci->ci_group->cg_item;
 816         if (!wwn_ci) {
 817                 pr_err("Unable to locate config_item wwn_ci\n");
 818                 return -EINVAL;
 819         }
 820
 821         if (iscsit_get_tpg(tpg) < 0)
 822                 return -EINVAL;
 823         /*
 824          * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
 825          */
 826         ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
 827                                 config_item_name(acl_ci), cmdsn_depth, 1);
 828
 829         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
 830                 "InitiatorName: %s\n", config_item_name(wwn_ci),
 831                 config_item_name(tpg_ci), cmdsn_depth,
 832                 config_item_name(acl_ci));
 833
 834         iscsit_put_tpg(tpg);
 835         return (!ret) ? count : (ssize_t)ret;
 836 }
 837
 838 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
 839
 840 static ssize_t lio_target_nacl_show_tag(
 841         struct se_node_acl *se_nacl,
 842         char *page)
 843 {
 844         return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
 845 }
 846
 847 static ssize_t lio_target_nacl_store_tag(
 848         struct se_node_acl *se_nacl,
 849         const char *page,
 850         size_t count)
 851 {
 852         int ret;
 853
 854         ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
 855
 856         if (ret < 0)
 857                 return ret;
 858         return count;
 859 }
 860
 861 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
 862
 863 static struct configfs_attribute *lio_target_initiator_attrs[] = {
 864         &lio_target_nacl_info.attr,
 865         &lio_target_nacl_cmdsn_depth.attr,
 866         &lio_target_nacl_tag.attr,
 867         NULL,
 868 };
 869
 870 static struct se_node_acl *lio_tpg_alloc_fabric_acl(
 871         struct se_portal_group *se_tpg)
 872 {
 873         struct iscsi_node_acl *acl;
 874
 875         acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
 876         if (!acl) {
 877                 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
 878                 return NULL;
 879         }
 880
 881         return &acl->se_node_acl;
 882 }
 883
 884 static struct se_node_acl *lio_target_make_nodeacl(
 885         struct se_portal_group *se_tpg,
 886         struct config_group *group,
 887         const char *name)
 888 {
 889         struct config_group *stats_cg;
 890         struct iscsi_node_acl *acl;
 891         struct se_node_acl *se_nacl_new, *se_nacl;
 892         struct iscsi_portal_group *tpg = container_of(se_tpg,
 893                         struct iscsi_portal_group, tpg_se_tpg);
 894         u32 cmdsn_depth;
 895
 896         se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
 897         if (!se_nacl_new)
 898                 return ERR_PTR(-ENOMEM);
 899
 900         cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth;
 901         /*
 902          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 903          * when converting a NdoeACL from demo mode -> explict
 904          */
 905         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 906                                 name, cmdsn_depth);
 907         if (IS_ERR(se_nacl))
 908                 return se_nacl;
 909
 910         acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
 911         stats_cg = &se_nacl->acl_fabric_stat_group;
 912
 913         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 914                                 GFP_KERNEL);
 915         if (!stats_cg->default_groups) {
 916                 pr_err("Unable to allocate memory for"
 917                                 " stats_cg->default_groups\n");
 918                 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 919                 kfree(acl);
 920                 return ERR_PTR(-ENOMEM);
 921         }
 922
 923         stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
 924         stats_cg->default_groups[1] = NULL;
 925         config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
 926                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 927
 928         return se_nacl;
 929 }
 930
 931 static void lio_target_drop_nodeacl(
 932         struct se_node_acl *se_nacl)
 933 {
 934         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 935         struct iscsi_node_acl *acl = container_of(se_nacl,
 936                         struct iscsi_node_acl, se_node_acl);
 937         struct config_item *df_item;
 938         struct config_group *stats_cg;
 939         int i;
 940
 941         stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
 942         for (i = 0; stats_cg->default_groups[i]; i++) {
 943                 df_item = &stats_cg->default_groups[i]->cg_item;
 944                 stats_cg->default_groups[i] = NULL;
 945                 config_item_put(df_item);
 946         }
 947         kfree(stats_cg->default_groups);
 948
 949         core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 950         kfree(acl);
 951 }
 952
 953 /* End items for lio_target_acl_cit */
 954
 955 /* Start items for lio_target_tpg_attrib_cit */
 956
 957 #define DEF_TPG_ATTRIB(name)                                            \
 958                                                                         \
 959 static ssize_t iscsi_tpg_attrib_show_##name(                            \
 960         struct se_portal_group *se_tpg,                         \
 961         char *page)                                                     \
 962 {                                                                       \
 963         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 964                         struct iscsi_portal_group, tpg_se_tpg); \
 965         ssize_t rb;                                                     \
 966                                                                         \
 967         if (iscsit_get_tpg(tpg) < 0)                                    \
 968                 return -EINVAL;                                         \
 969                                                                         \
 970         rb = sprintf(page, "%u\n", tpg->tpg_attrib.name);               \
 971         iscsit_put_tpg(tpg);                                            \
 972         return rb;                                                      \
 973 }                                                                       \
 974                                                                         \
 975 static ssize_t iscsi_tpg_attrib_store_##name(                           \
 976         struct se_portal_group *se_tpg,                         \
 977         const char *page,                                               \
 978         size_t count)                                                   \
 979 {                                                                       \
 980         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 981                         struct iscsi_portal_group, tpg_se_tpg); \
 982         u32 val;                                                        \
 983         int ret;                                                        \
 984                                                                         \
 985         if (iscsit_get_tpg(tpg) < 0)                                    \
 986                 return -EINVAL;                                         \
 987                                                                         \
 988         ret = kstrtou32(page, 0, &val);                                 \
 989         if (ret)                                                        \
 990                 goto out;                                               \
 991         ret = iscsit_ta_##name(tpg, val);                               \
 992         if (ret < 0)                                                    \
 993                 goto out;                                               \
 994                                                                         \
 995         iscsit_put_tpg(tpg);                                            \
 996         return count;                                                   \
 997 out:                                                                    \
 998         iscsit_put_tpg(tpg);                                            \
 999         return ret;                                                     \
1000 }
1001
1002 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
1003
1004 /*
1005  * Define iscsi_tpg_attrib_s_authentication
1006  */
1007 DEF_TPG_ATTRIB(authentication);
1008 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1009 /*
1010  * Define iscsi_tpg_attrib_s_login_timeout
1011  */
1012 DEF_TPG_ATTRIB(login_timeout);
1013 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1014 /*
1015  * Define iscsi_tpg_attrib_s_netif_timeout
1016  */
1017 DEF_TPG_ATTRIB(netif_timeout);
1018 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1019 /*
1020  * Define iscsi_tpg_attrib_s_generate_node_acls
1021  */
1022 DEF_TPG_ATTRIB(generate_node_acls);
1023 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1024 /*
1025  * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1026  */
1027 DEF_TPG_ATTRIB(default_cmdsn_depth);
1028 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1029 /*
1030  Define iscsi_tpg_attrib_s_cache_dynamic_acls
1031  */
1032 DEF_TPG_ATTRIB(cache_dynamic_acls);
1033 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1034 /*
1035  * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1036  */
1037 DEF_TPG_ATTRIB(demo_mode_write_protect);
1038 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1039 /*
1040  * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1041  */
1042 DEF_TPG_ATTRIB(prod_mode_write_protect);
1043 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1044 /*
1045  * Define iscsi_tpg_attrib_s_demo_mode_discovery,
1046  */
1047 DEF_TPG_ATTRIB(demo_mode_discovery);
1048 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
1049
1050 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1051         &iscsi_tpg_attrib_authentication.attr,
1052         &iscsi_tpg_attrib_login_timeout.attr,
1053         &iscsi_tpg_attrib_netif_timeout.attr,
1054         &iscsi_tpg_attrib_generate_node_acls.attr,
1055         &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1056         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1057         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1058         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1059         &iscsi_tpg_attrib_demo_mode_discovery.attr,
1060         NULL,
1061 };
1062
1063 /* End items for lio_target_tpg_attrib_cit */
1064
1065 /* Start items for lio_target_tpg_auth_cit */
1066
1067 #define __DEF_TPG_AUTH_STR(prefix, name, flags)                                 \
1068 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1069         struct se_portal_group *se_tpg,                                         \
1070         char *page)                                                             \
1071 {                                                                               \
1072         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1073                                 struct iscsi_portal_group, tpg_se_tpg);         \
1074         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1075                                                                                 \
1076         if (!capable(CAP_SYS_ADMIN))                                            \
1077                 return -EPERM;                                                  \
1078                                                                                 \
1079         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);                   \
1080 }                                                                               \
1081                                                                                 \
1082 static ssize_t __iscsi_##prefix##_store_##name(                                 \
1083         struct se_portal_group *se_tpg,                                         \
1084         const char *page,                                                       \
1085         size_t count)                                                           \
1086 {                                                                               \
1087         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1088                                 struct iscsi_portal_group, tpg_se_tpg);         \
1089         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1090                                                                                 \
1091         if (!capable(CAP_SYS_ADMIN))                                            \
1092                 return -EPERM;                                                  \
1093                                                                                 \
1094         snprintf(auth->name, sizeof(auth->name), "%s", page);                   \
1095         if (!(strncmp("NULL", auth->name, 4)))                                  \
1096                 auth->naf_flags &= ~flags;                                      \
1097         else                                                                    \
1098                 auth->naf_flags |= flags;                                       \
1099                                                                                 \
1100         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                            \
1101             (auth->naf_flags & NAF_PASSWORD_IN_SET))                            \
1102                 auth->authenticate_target = 1;                                  \
1103         else                                                                    \
1104                 auth->authenticate_target = 0;                                  \
1105                                                                                 \
1106         return count;                                                           \
1107 }
1108
1109 #define __DEF_TPG_AUTH_INT(prefix, name)                                        \
1110 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1111         struct se_portal_group *se_tpg,                                         \
1112         char *page)                                                             \
1113 {                                                                               \
1114         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1115                                 struct iscsi_portal_group, tpg_se_tpg);         \
1116         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1117                                                                                 \
1118         if (!capable(CAP_SYS_ADMIN))                                            \
1119                 return -EPERM;                                                  \
1120                                                                                 \
1121         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);                   \
1122 }
1123
1124 #define DEF_TPG_AUTH_STR(name, flags)                                           \
1125         __DEF_TPG_AUTH_STR(tpg_auth, name, flags)                               \
1126 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1127         struct se_portal_group *se_tpg,                                         \
1128         char *page)                                                             \
1129 {                                                                               \
1130         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1131 }                                                                               \
1132                                                                                 \
1133 static ssize_t iscsi_tpg_auth_store_##name(                                     \
1134         struct se_portal_group *se_tpg,                                         \
1135         const char *page,                                                       \
1136         size_t count)                                                           \
1137 {                                                                               \
1138         return __iscsi_tpg_auth_store_##name(se_tpg, page, count);              \
1139 }
1140
1141 #define DEF_TPG_AUTH_INT(name)                                                  \
1142         __DEF_TPG_AUTH_INT(tpg_auth, name)                                      \
1143 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1144         struct se_portal_group *se_tpg,                                         \
1145         char *page)                                                             \
1146 {                                                                               \
1147         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1148 }
1149
1150 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1151 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1152
1153 /*
1154  *  * One-way authentication userid
1155  *   */
1156 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1157 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1158 /*
1159  *  * One-way authentication password
1160  *   */
1161 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1162 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1163 /*
1164  *  * Enforce mutual authentication
1165  *   */
1166 DEF_TPG_AUTH_INT(authenticate_target);
1167 TPG_AUTH_ATTR_RO(authenticate_target);
1168 /*
1169  *  * Mutual authentication userid
1170  *   */
1171 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1172 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1173 /*
1174  *  * Mutual authentication password
1175  *   */
1176 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1177 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1178
1179 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1180         &iscsi_tpg_auth_userid.attr,
1181         &iscsi_tpg_auth_password.attr,
1182         &iscsi_tpg_auth_authenticate_target.attr,
1183         &iscsi_tpg_auth_userid_mutual.attr,
1184         &iscsi_tpg_auth_password_mutual.attr,
1185         NULL,
1186 };
1187
1188 /* End items for lio_target_tpg_auth_cit */
1189
1190 /* Start items for lio_target_tpg_param_cit */
1191
1192 #define DEF_TPG_PARAM(name)                                             \
1193 static ssize_t iscsi_tpg_param_show_##name(                             \
1194         struct se_portal_group *se_tpg,                                 \
1195         char *page)                                                     \
1196 {                                                                       \
1197         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1198                         struct iscsi_portal_group, tpg_se_tpg);         \
1199         struct iscsi_param *param;                                      \
1200         ssize_t rb;                                                     \
1201                                                                         \
1202         if (iscsit_get_tpg(tpg) < 0)                                    \
1203                 return -EINVAL;                                         \
1204                                                                         \
1205         param = iscsi_find_param_from_key(__stringify(name),            \
1206                                 tpg->param_list);                       \
1207         if (!param) {                                                   \
1208                 iscsit_put_tpg(tpg);                                    \
1209                 return -EINVAL;                                         \
1210         }                                                               \
1211         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
1212                                                                         \
1213         iscsit_put_tpg(tpg);                                            \
1214         return rb;                                                      \
1215 }                                                                       \
1216 static ssize_t iscsi_tpg_param_store_##name(                            \
1217         struct se_portal_group *se_tpg,                         \
1218         const char *page,                                               \
1219         size_t count)                                                   \
1220 {                                                                       \
1221         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1222                         struct iscsi_portal_group, tpg_se_tpg);         \
1223         char *buf;                                                      \
1224         int ret, len;                                                   \
1225                                                                         \
1226         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1227         if (!buf)                                                       \
1228                 return -ENOMEM;                                         \
1229         len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);       \
1230         if (isspace(buf[len-1]))                                        \
1231                 buf[len-1] = '\0'; /* Kill newline */                   \
1232                                                                         \
1233         if (iscsit_get_tpg(tpg) < 0) {                                  \
1234                 kfree(buf);                                             \
1235                 return -EINVAL;                                         \
1236         }                                                               \
1237                                                                         \
1238         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1239         if (ret < 0)                                                    \
1240                 goto out;                                               \
1241                                                                         \
1242         kfree(buf);                                                     \
1243         iscsit_put_tpg(tpg);                                            \
1244         return count;                                                   \
1245 out:                                                                    \
1246         kfree(buf);                                                     \
1247         iscsit_put_tpg(tpg);                                            \
1248         return -EINVAL;                                         \
1249 }
1250
1251 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1252
1253 DEF_TPG_PARAM(AuthMethod);
1254 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1255
1256 DEF_TPG_PARAM(HeaderDigest);
1257 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1258
1259 DEF_TPG_PARAM(DataDigest);
1260 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1261
1262 DEF_TPG_PARAM(MaxConnections);
1263 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1264
1265 DEF_TPG_PARAM(TargetAlias);
1266 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1267
1268 DEF_TPG_PARAM(InitialR2T);
1269 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1270
1271 DEF_TPG_PARAM(ImmediateData);
1272 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1273
1274 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1275 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1276
1277 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1278 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1279
1280 DEF_TPG_PARAM(MaxBurstLength);
1281 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1282
1283 DEF_TPG_PARAM(FirstBurstLength);
1284 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1285
1286 DEF_TPG_PARAM(DefaultTime2Wait);
1287 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1288
1289 DEF_TPG_PARAM(DefaultTime2Retain);
1290 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1291
1292 DEF_TPG_PARAM(MaxOutstandingR2T);
1293 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1294
1295 DEF_TPG_PARAM(DataPDUInOrder);
1296 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1297
1298 DEF_TPG_PARAM(DataSequenceInOrder);
1299 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1300
1301 DEF_TPG_PARAM(ErrorRecoveryLevel);
1302 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1303
1304 DEF_TPG_PARAM(IFMarker);
1305 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1306
1307 DEF_TPG_PARAM(OFMarker);
1308 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1309
1310 DEF_TPG_PARAM(IFMarkInt);
1311 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1312
1313 DEF_TPG_PARAM(OFMarkInt);
1314 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1315
1316 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1317         &iscsi_tpg_param_AuthMethod.attr,
1318         &iscsi_tpg_param_HeaderDigest.attr,
1319         &iscsi_tpg_param_DataDigest.attr,
1320         &iscsi_tpg_param_MaxConnections.attr,
1321         &iscsi_tpg_param_TargetAlias.attr,
1322         &iscsi_tpg_param_InitialR2T.attr,
1323         &iscsi_tpg_param_ImmediateData.attr,
1324         &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1325         &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1326         &iscsi_tpg_param_MaxBurstLength.attr,
1327         &iscsi_tpg_param_FirstBurstLength.attr,
1328         &iscsi_tpg_param_DefaultTime2Wait.attr,
1329         &iscsi_tpg_param_DefaultTime2Retain.attr,
1330         &iscsi_tpg_param_MaxOutstandingR2T.attr,
1331         &iscsi_tpg_param_DataPDUInOrder.attr,
1332         &iscsi_tpg_param_DataSequenceInOrder.attr,
1333         &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1334         &iscsi_tpg_param_IFMarker.attr,
1335         &iscsi_tpg_param_OFMarker.attr,
1336         &iscsi_tpg_param_IFMarkInt.attr,
1337         &iscsi_tpg_param_OFMarkInt.attr,
1338         NULL,
1339 };
1340
1341 /* End items for lio_target_tpg_param_cit */
1342
1343 /* Start items for lio_target_tpg_cit */
1344
1345 static ssize_t lio_target_tpg_show_enable(
1346         struct se_portal_group *se_tpg,
1347         char *page)
1348 {
1349         struct iscsi_portal_group *tpg = container_of(se_tpg,
1350                         struct iscsi_portal_group, tpg_se_tpg);
1351         ssize_t len;
1352
1353         spin_lock(&tpg->tpg_state_lock);
1354         len = sprintf(page, "%d\n",
1355                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1356         spin_unlock(&tpg->tpg_state_lock);
1357
1358         return len;
1359 }
1360
1361 static ssize_t lio_target_tpg_store_enable(
1362         struct se_portal_group *se_tpg,
1363         const char *page,
1364         size_t count)
1365 {
1366         struct iscsi_portal_group *tpg = container_of(se_tpg,
1367                         struct iscsi_portal_group, tpg_se_tpg);
1368         u32 op;
1369         int ret;
1370
1371         ret = kstrtou32(page, 0, &op);
1372         if (ret)
1373                 return ret;
1374         if ((op != 1) && (op != 0)) {
1375                 pr_err("Illegal value for tpg_enable: %u\n", op);
1376                 return -EINVAL;
1377         }
1378
1379         ret = iscsit_get_tpg(tpg);
1380         if (ret < 0)
1381                 return -EINVAL;
1382
1383         if (op) {
1384                 ret = iscsit_tpg_enable_portal_group(tpg);
1385                 if (ret < 0)
1386                         goto out;
1387         } else {
1388                 /*
1389                  * iscsit_tpg_disable_portal_group() assumes force=1
1390                  */
1391                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1392                 if (ret < 0)
1393                         goto out;
1394         }
1395
1396         iscsit_put_tpg(tpg);
1397         return count;
1398 out:
1399         iscsit_put_tpg(tpg);
1400         return -EINVAL;
1401 }
1402
1403 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1404
1405 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1406         &lio_target_tpg_enable.attr,
1407         NULL,
1408 };
1409
1410 /* End items for lio_target_tpg_cit */
1411
1412 /* Start items for lio_target_tiqn_cit */
1413
1414 static struct se_portal_group *lio_target_tiqn_addtpg(
1415         struct se_wwn *wwn,
1416         struct config_group *group,
1417         const char *name)
1418 {
1419         struct iscsi_portal_group *tpg;
1420         struct iscsi_tiqn *tiqn;
1421         char *tpgt_str;
1422         int ret;
1423         u16 tpgt;
1424
1425         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1426         /*
1427          * Only tpgt_# directory groups can be created below
1428          * target/iscsi/iqn.superturodiskarry/
1429          */
1430         tpgt_str = strstr(name, "tpgt_");
1431         if (!tpgt_str) {
1432                 pr_err("Unable to locate \"tpgt_#\" directory"
1433                                 " group\n");
1434                 return NULL;
1435         }
1436         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1437         ret = kstrtou16(tpgt_str, 0, &tpgt);
1438         if (ret)
1439                 return NULL;
1440
1441         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1442         if (!tpg)
1443                 return NULL;
1444
1445         ret = core_tpg_register(
1446                         &lio_target_fabric_configfs->tf_ops,
1447                         wwn, &tpg->tpg_se_tpg, tpg,
1448                         TRANSPORT_TPG_TYPE_NORMAL);
1449         if (ret < 0)
1450                 return NULL;
1451
1452         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1453         if (ret != 0)
1454                 goto out;
1455
1456         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1457         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1458                         name);
1459         return &tpg->tpg_se_tpg;
1460 out:
1461         core_tpg_deregister(&tpg->tpg_se_tpg);
1462         kfree(tpg);
1463         return NULL;
1464 }
1465
1466 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1467 {
1468         struct iscsi_portal_group *tpg;
1469         struct iscsi_tiqn *tiqn;
1470
1471         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1472         tiqn = tpg->tpg_tiqn;
1473         /*
1474          * iscsit_tpg_del_portal_group() assumes force=1
1475          */
1476         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1477         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1478 }
1479
1480 /* End items for lio_target_tiqn_cit */
1481
1482 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1483
1484 static ssize_t lio_target_wwn_show_attr_lio_version(
1485         struct target_fabric_configfs *tf,
1486         char *page)
1487 {
1488         return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1489 }
1490
1491 TF_WWN_ATTR_RO(lio_target, lio_version);
1492
1493 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1494         &lio_target_wwn_lio_version.attr,
1495         NULL,
1496 };
1497
1498 static struct se_wwn *lio_target_call_coreaddtiqn(
1499         struct target_fabric_configfs *tf,
1500         struct config_group *group,
1501         const char *name)
1502 {
1503         struct config_group *stats_cg;
1504         struct iscsi_tiqn *tiqn;
1505
1506         tiqn = iscsit_add_tiqn((unsigned char *)name);
1507         if (IS_ERR(tiqn))
1508                 return ERR_CAST(tiqn);
1509         /*
1510          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1511          */
1512         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1513
1514         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1515                                 GFP_KERNEL);
1516         if (!stats_cg->default_groups) {
1517                 pr_err("Unable to allocate memory for"
1518                                 " stats_cg->default_groups\n");
1519                 iscsit_del_tiqn(tiqn);
1520                 return ERR_PTR(-ENOMEM);
1521         }
1522
1523         stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1524         stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1525         stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1526         stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1527         stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1528         stats_cg->default_groups[5] = NULL;
1529         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1530                         "iscsi_instance", &iscsi_stat_instance_cit);
1531         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1532                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1533         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1534                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1535         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1536                         "iscsi_login_stats", &iscsi_stat_login_cit);
1537         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1538                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1539
1540         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1541         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1542                         " %s\n", name);
1543         return &tiqn->tiqn_wwn;
1544 }
1545
1546 static void lio_target_call_coredeltiqn(
1547         struct se_wwn *wwn)
1548 {
1549         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1550         struct config_item *df_item;
1551         struct config_group *stats_cg;
1552         int i;
1553
1554         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1555         for (i = 0; stats_cg->default_groups[i]; i++) {
1556                 df_item = &stats_cg->default_groups[i]->cg_item;
1557                 stats_cg->default_groups[i] = NULL;
1558                 config_item_put(df_item);
1559         }
1560         kfree(stats_cg->default_groups);
1561
1562         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1563                         tiqn->tiqn);
1564         iscsit_del_tiqn(tiqn);
1565 }
1566
1567 /* End LIO-Target TIQN struct contig_lio_target_cit */
1568
1569 /* Start lio_target_discovery_auth_cit */
1570
1571 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1572         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
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 static ssize_t iscsi_disc_store_##name(                                 \
1581         struct target_fabric_configfs *tf,                              \
1582         const char *page,                                               \
1583         size_t count)                                                   \
1584 {                                                                       \
1585         return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1586                 page, count);                                           \
1587 }
1588
1589 #define DEF_DISC_AUTH_INT(name)                                         \
1590         __DEF_NACL_AUTH_INT(disc, name)                                 \
1591 static ssize_t iscsi_disc_show_##name(                                  \
1592         struct target_fabric_configfs *tf,                              \
1593         char *page)                                                     \
1594 {                                                                       \
1595         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1596                         page);                                          \
1597 }
1598
1599 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1600 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1601
1602 /*
1603  * One-way authentication userid
1604  */
1605 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1606 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1607 /*
1608  * One-way authentication password
1609  */
1610 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1611 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1612 /*
1613  * Enforce mutual authentication
1614  */
1615 DEF_DISC_AUTH_INT(authenticate_target);
1616 DISC_AUTH_ATTR_RO(authenticate_target);
1617 /*
1618  * Mutual authentication userid
1619  */
1620 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1621 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1622 /*
1623  * Mutual authentication password
1624  */
1625 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1626 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1627
1628 /*
1629  * enforce_discovery_auth
1630  */
1631 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1632         struct target_fabric_configfs *tf,
1633         char *page)
1634 {
1635         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1636
1637         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1638 }
1639
1640 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1641         struct target_fabric_configfs *tf,
1642         const char *page,
1643         size_t count)
1644 {
1645         struct iscsi_param *param;
1646         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1647         u32 op;
1648         int err;
1649
1650         err = kstrtou32(page, 0, &op);
1651         if (err)
1652                 return -EINVAL;
1653         if ((op != 1) && (op != 0)) {
1654                 pr_err("Illegal value for enforce_discovery_auth:"
1655                                 " %u\n", op);
1656                 return -EINVAL;
1657         }
1658
1659         if (!discovery_tpg) {
1660                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1661                 return -EINVAL;
1662         }
1663
1664         param = iscsi_find_param_from_key(AUTHMETHOD,
1665                                 discovery_tpg->param_list);
1666         if (!param)
1667                 return -EINVAL;
1668
1669         if (op) {
1670                 /*
1671                  * Reset the AuthMethod key to CHAP.
1672                  */
1673                 if (iscsi_update_param_value(param, CHAP) < 0)
1674                         return -EINVAL;
1675
1676                 discovery_tpg->tpg_attrib.authentication = 1;
1677                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1678                 pr_debug("LIO-CORE[0] Successfully enabled"
1679                         " authentication enforcement for iSCSI"
1680                         " Discovery TPG\n");
1681         } else {
1682                 /*
1683                  * Reset the AuthMethod key to CHAP,None
1684                  */
1685                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1686                         return -EINVAL;
1687
1688                 discovery_tpg->tpg_attrib.authentication = 0;
1689                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1690                 pr_debug("LIO-CORE[0] Successfully disabled"
1691                         " authentication enforcement for iSCSI"
1692                         " Discovery TPG\n");
1693         }
1694
1695         return count;
1696 }
1697
1698 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1699
1700 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1701         &iscsi_disc_userid.attr,
1702         &iscsi_disc_password.attr,
1703         &iscsi_disc_authenticate_target.attr,
1704         &iscsi_disc_userid_mutual.attr,
1705         &iscsi_disc_password_mutual.attr,
1706         &iscsi_disc_enforce_discovery_auth.attr,
1707         NULL,
1708 };
1709
1710 /* End lio_target_discovery_auth_cit */
1711
1712 /* Start functions for target_core_fabric_ops */
1713
1714 static char *iscsi_get_fabric_name(void)
1715 {
1716         return "iSCSI";
1717 }
1718
1719 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1720 {
1721         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1722
1723         /* only used for printks or comparism with ->ref_task_tag */
1724         return (__force u32)cmd->init_task_tag;
1725 }
1726
1727 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1728 {
1729         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1730
1731         return cmd->i_state;
1732 }
1733
1734 static u32 lio_sess_get_index(struct se_session *se_sess)
1735 {
1736         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1737
1738         return sess->session_index;
1739 }
1740
1741 static u32 lio_sess_get_initiator_sid(
1742         struct se_session *se_sess,
1743         unsigned char *buf,
1744         u32 size)
1745 {
1746         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1747         /*
1748          * iSCSI Initiator Session Identifier from RFC-3720.
1749          */
1750         return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1751                 sess->isid[0], sess->isid[1], sess->isid[2],
1752                 sess->isid[3], sess->isid[4], sess->isid[5]);
1753 }
1754
1755 static int lio_queue_data_in(struct se_cmd *se_cmd)
1756 {
1757         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1758
1759         cmd->i_state = ISTATE_SEND_DATAIN;
1760         cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1761
1762         return 0;
1763 }
1764
1765 static int lio_write_pending(struct se_cmd *se_cmd)
1766 {
1767         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1768         struct iscsi_conn *conn = cmd->conn;
1769
1770         if (!cmd->immediate_data && !cmd->unsolicited_data)
1771                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1772
1773         return 0;
1774 }
1775
1776 static int lio_write_pending_status(struct se_cmd *se_cmd)
1777 {
1778         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1779         int ret;
1780
1781         spin_lock_bh(&cmd->istate_lock);
1782         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1783         spin_unlock_bh(&cmd->istate_lock);
1784
1785         return ret;
1786 }
1787
1788 static int lio_queue_status(struct se_cmd *se_cmd)
1789 {
1790         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1791
1792         cmd->i_state = ISTATE_SEND_STATUS;
1793
1794         if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1795                 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1796                 return 0;
1797         }
1798         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1799
1800         return 0;
1801 }
1802
1803 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1804 {
1805         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1806
1807         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1808         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1809 }
1810
1811 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1812 {
1813         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1814
1815         return &tpg->tpg_tiqn->tiqn[0];
1816 }
1817
1818 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1819 {
1820         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1821
1822         return tpg->tpgt;
1823 }
1824
1825 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1826 {
1827         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1828
1829         return tpg->tpg_attrib.default_cmdsn_depth;
1830 }
1831
1832 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1833 {
1834         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1835
1836         return tpg->tpg_attrib.generate_node_acls;
1837 }
1838
1839 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1840 {
1841         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1842
1843         return tpg->tpg_attrib.cache_dynamic_acls;
1844 }
1845
1846 static int lio_tpg_check_demo_mode_write_protect(
1847         struct se_portal_group *se_tpg)
1848 {
1849         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1850
1851         return tpg->tpg_attrib.demo_mode_write_protect;
1852 }
1853
1854 static int lio_tpg_check_prod_mode_write_protect(
1855         struct se_portal_group *se_tpg)
1856 {
1857         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1858
1859         return tpg->tpg_attrib.prod_mode_write_protect;
1860 }
1861
1862 static void lio_tpg_release_fabric_acl(
1863         struct se_portal_group *se_tpg,
1864         struct se_node_acl *se_acl)
1865 {
1866         struct iscsi_node_acl *acl = container_of(se_acl,
1867                                 struct iscsi_node_acl, se_node_acl);
1868         kfree(acl);
1869 }
1870
1871 /*
1872  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1873  *
1874  * Also, this function calls iscsit_inc_session_usage_count() on the
1875  * struct iscsi_session in question.
1876  */
1877 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1878 {
1879         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1880
1881         spin_lock(&sess->conn_lock);
1882         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1883             atomic_read(&sess->session_logout) ||
1884             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1885                 spin_unlock(&sess->conn_lock);
1886                 return 0;
1887         }
1888         atomic_set(&sess->session_reinstatement, 1);
1889         spin_unlock(&sess->conn_lock);
1890
1891         iscsit_stop_time2retain_timer(sess);
1892         iscsit_stop_session(sess, 1, 1);
1893
1894         return 1;
1895 }
1896
1897 /*
1898  * Calls iscsit_dec_session_usage_count() as inverse of
1899  * lio_tpg_shutdown_session()
1900  */
1901 static void lio_tpg_close_session(struct se_session *se_sess)
1902 {
1903         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1904         /*
1905          * If the iSCSI Session for the iSCSI Initiator Node exists,
1906          * forcefully shutdown the iSCSI NEXUS.
1907          */
1908         iscsit_close_session(sess);
1909 }
1910
1911 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1912 {
1913         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1914
1915         return tpg->tpg_tiqn->tiqn_index;
1916 }
1917
1918 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1919 {
1920         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1921                                 se_node_acl);
1922
1923         acl->node_attrib.nacl = acl;
1924         iscsit_set_default_node_attribues(acl);
1925 }
1926
1927 static int lio_check_stop_free(struct se_cmd *se_cmd)
1928 {
1929         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1930 }
1931
1932 static void lio_release_cmd(struct se_cmd *se_cmd)
1933 {
1934         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1935
1936         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1937         iscsit_release_cmd(cmd);
1938 }
1939
1940 /* End functions for target_core_fabric_ops */
1941
1942 int iscsi_target_register_configfs(void)
1943 {
1944         struct target_fabric_configfs *fabric;
1945         int ret;
1946
1947         lio_target_fabric_configfs = NULL;
1948         fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1949         if (IS_ERR(fabric)) {
1950                 pr_err("target_fabric_configfs_init() for"
1951                                 " LIO-Target failed!\n");
1952                 return PTR_ERR(fabric);
1953         }
1954         /*
1955          * Setup the fabric API of function pointers used by target_core_mod..
1956          */
1957         fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1958         fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1959         fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1960         fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1961         fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1962         fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1963         fabric->tf_ops.tpg_get_pr_transport_id_len =
1964                                 &iscsi_get_pr_transport_id_len;
1965         fabric->tf_ops.tpg_parse_pr_out_transport_id =
1966                                 &iscsi_parse_pr_out_transport_id;
1967         fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1968         fabric->tf_ops.tpg_check_demo_mode_cache =
1969                                 &lio_tpg_check_demo_mode_cache;
1970         fabric->tf_ops.tpg_check_demo_mode_write_protect =
1971                                 &lio_tpg_check_demo_mode_write_protect;
1972         fabric->tf_ops.tpg_check_prod_mode_write_protect =
1973                                 &lio_tpg_check_prod_mode_write_protect;
1974         fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1975         fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1976         fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
1977         fabric->tf_ops.check_stop_free = &lio_check_stop_free,
1978         fabric->tf_ops.release_cmd = &lio_release_cmd;
1979         fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
1980         fabric->tf_ops.close_session = &lio_tpg_close_session;
1981         fabric->tf_ops.sess_get_index = &lio_sess_get_index;
1982         fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
1983         fabric->tf_ops.write_pending = &lio_write_pending;
1984         fabric->tf_ops.write_pending_status = &lio_write_pending_status;
1985         fabric->tf_ops.set_default_node_attributes =
1986                                 &lio_set_default_node_attributes;
1987         fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
1988         fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
1989         fabric->tf_ops.queue_data_in = &lio_queue_data_in;
1990         fabric->tf_ops.queue_status = &lio_queue_status;
1991         fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
1992         /*
1993          * Setup function pointers for generic logic in target_core_fabric_configfs.c
1994          */
1995         fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
1996         fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
1997         fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
1998         fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
1999         fabric->tf_ops.fabric_post_link = NULL;
2000         fabric->tf_ops.fabric_pre_unlink = NULL;
2001         fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
2002         fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
2003         fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
2004         fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
2005         /*
2006          * Setup default attribute lists for various fabric->tf_cit_tmpl
2007          * sturct config_item_type's
2008          */
2009         fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
2010         fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
2011         fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
2012         fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
2013         fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
2014         fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
2015         fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
2016         fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
2017         fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
2018         fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
2019         fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
2020
2021         ret = target_fabric_configfs_register(fabric);
2022         if (ret < 0) {
2023                 pr_err("target_fabric_configfs_register() for"
2024                                 " LIO-Target failed!\n");
2025                 target_fabric_configfs_free(fabric);
2026                 return ret;
2027         }
2028
2029         lio_target_fabric_configfs = fabric;
2030         pr_debug("LIO_TARGET[0] - Set fabric ->"
2031                         " lio_target_fabric_configfs\n");
2032         return 0;
2033 }
2034
2035
2036 void iscsi_target_deregister_configfs(void)
2037 {
2038         if (!lio_target_fabric_configfs)
2039                 return;
2040         /*
2041          * Shutdown discovery sessions and disable discovery TPG
2042          */
2043         if (iscsit_global->discovery_tpg)
2044                 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
2045
2046         target_fabric_configfs_deregister(lio_target_fabric_configfs);
2047         lio_target_fabric_configfs = NULL;
2048         pr_debug("LIO_TARGET[0] - Cleared"
2049                                 " lio_target_fabric_configfs\n");
2050 }