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  * Define iscsi_tpg_attrib_s_default_erl
1051  */
1052 DEF_TPG_ATTRIB(default_erl);
1053 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
1054
1055 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1056         &iscsi_tpg_attrib_authentication.attr,
1057         &iscsi_tpg_attrib_login_timeout.attr,
1058         &iscsi_tpg_attrib_netif_timeout.attr,
1059         &iscsi_tpg_attrib_generate_node_acls.attr,
1060         &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1061         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1062         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1063         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1064         &iscsi_tpg_attrib_demo_mode_discovery.attr,
1065         &iscsi_tpg_attrib_default_erl.attr,
1066         NULL,
1067 };
1068
1069 /* End items for lio_target_tpg_attrib_cit */
1070
1071 /* Start items for lio_target_tpg_auth_cit */
1072
1073 #define __DEF_TPG_AUTH_STR(prefix, name, flags)                                 \
1074 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1075         struct se_portal_group *se_tpg,                                         \
1076         char *page)                                                             \
1077 {                                                                               \
1078         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1079                                 struct iscsi_portal_group, tpg_se_tpg);         \
1080         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1081                                                                                 \
1082         if (!capable(CAP_SYS_ADMIN))                                            \
1083                 return -EPERM;                                                  \
1084                                                                                 \
1085         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);                   \
1086 }                                                                               \
1087                                                                                 \
1088 static ssize_t __iscsi_##prefix##_store_##name(                                 \
1089         struct se_portal_group *se_tpg,                                         \
1090         const char *page,                                                       \
1091         size_t count)                                                           \
1092 {                                                                               \
1093         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1094                                 struct iscsi_portal_group, tpg_se_tpg);         \
1095         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1096                                                                                 \
1097         if (!capable(CAP_SYS_ADMIN))                                            \
1098                 return -EPERM;                                                  \
1099                                                                                 \
1100         snprintf(auth->name, sizeof(auth->name), "%s", page);                   \
1101         if (!(strncmp("NULL", auth->name, 4)))                                  \
1102                 auth->naf_flags &= ~flags;                                      \
1103         else                                                                    \
1104                 auth->naf_flags |= flags;                                       \
1105                                                                                 \
1106         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                            \
1107             (auth->naf_flags & NAF_PASSWORD_IN_SET))                            \
1108                 auth->authenticate_target = 1;                                  \
1109         else                                                                    \
1110                 auth->authenticate_target = 0;                                  \
1111                                                                                 \
1112         return count;                                                           \
1113 }
1114
1115 #define __DEF_TPG_AUTH_INT(prefix, name)                                        \
1116 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1117         struct se_portal_group *se_tpg,                                         \
1118         char *page)                                                             \
1119 {                                                                               \
1120         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1121                                 struct iscsi_portal_group, tpg_se_tpg);         \
1122         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1123                                                                                 \
1124         if (!capable(CAP_SYS_ADMIN))                                            \
1125                 return -EPERM;                                                  \
1126                                                                                 \
1127         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);                   \
1128 }
1129
1130 #define DEF_TPG_AUTH_STR(name, flags)                                           \
1131         __DEF_TPG_AUTH_STR(tpg_auth, name, flags)                               \
1132 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1133         struct se_portal_group *se_tpg,                                         \
1134         char *page)                                                             \
1135 {                                                                               \
1136         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1137 }                                                                               \
1138                                                                                 \
1139 static ssize_t iscsi_tpg_auth_store_##name(                                     \
1140         struct se_portal_group *se_tpg,                                         \
1141         const char *page,                                                       \
1142         size_t count)                                                           \
1143 {                                                                               \
1144         return __iscsi_tpg_auth_store_##name(se_tpg, page, count);              \
1145 }
1146
1147 #define DEF_TPG_AUTH_INT(name)                                                  \
1148         __DEF_TPG_AUTH_INT(tpg_auth, name)                                      \
1149 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1150         struct se_portal_group *se_tpg,                                         \
1151         char *page)                                                             \
1152 {                                                                               \
1153         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1154 }
1155
1156 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1157 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1158
1159 /*
1160  *  * One-way authentication userid
1161  *   */
1162 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1163 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1164 /*
1165  *  * One-way authentication password
1166  *   */
1167 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1168 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1169 /*
1170  *  * Enforce mutual authentication
1171  *   */
1172 DEF_TPG_AUTH_INT(authenticate_target);
1173 TPG_AUTH_ATTR_RO(authenticate_target);
1174 /*
1175  *  * Mutual authentication userid
1176  *   */
1177 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1178 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1179 /*
1180  *  * Mutual authentication password
1181  *   */
1182 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1183 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1184
1185 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1186         &iscsi_tpg_auth_userid.attr,
1187         &iscsi_tpg_auth_password.attr,
1188         &iscsi_tpg_auth_authenticate_target.attr,
1189         &iscsi_tpg_auth_userid_mutual.attr,
1190         &iscsi_tpg_auth_password_mutual.attr,
1191         NULL,
1192 };
1193
1194 /* End items for lio_target_tpg_auth_cit */
1195
1196 /* Start items for lio_target_tpg_param_cit */
1197
1198 #define DEF_TPG_PARAM(name)                                             \
1199 static ssize_t iscsi_tpg_param_show_##name(                             \
1200         struct se_portal_group *se_tpg,                                 \
1201         char *page)                                                     \
1202 {                                                                       \
1203         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1204                         struct iscsi_portal_group, tpg_se_tpg);         \
1205         struct iscsi_param *param;                                      \
1206         ssize_t rb;                                                     \
1207                                                                         \
1208         if (iscsit_get_tpg(tpg) < 0)                                    \
1209                 return -EINVAL;                                         \
1210                                                                         \
1211         param = iscsi_find_param_from_key(__stringify(name),            \
1212                                 tpg->param_list);                       \
1213         if (!param) {                                                   \
1214                 iscsit_put_tpg(tpg);                                    \
1215                 return -EINVAL;                                         \
1216         }                                                               \
1217         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
1218                                                                         \
1219         iscsit_put_tpg(tpg);                                            \
1220         return rb;                                                      \
1221 }                                                                       \
1222 static ssize_t iscsi_tpg_param_store_##name(                            \
1223         struct se_portal_group *se_tpg,                         \
1224         const char *page,                                               \
1225         size_t count)                                                   \
1226 {                                                                       \
1227         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1228                         struct iscsi_portal_group, tpg_se_tpg);         \
1229         char *buf;                                                      \
1230         int ret, len;                                                   \
1231                                                                         \
1232         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1233         if (!buf)                                                       \
1234                 return -ENOMEM;                                         \
1235         len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);       \
1236         if (isspace(buf[len-1]))                                        \
1237                 buf[len-1] = '\0'; /* Kill newline */                   \
1238                                                                         \
1239         if (iscsit_get_tpg(tpg) < 0) {                                  \
1240                 kfree(buf);                                             \
1241                 return -EINVAL;                                         \
1242         }                                                               \
1243                                                                         \
1244         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1245         if (ret < 0)                                                    \
1246                 goto out;                                               \
1247                                                                         \
1248         kfree(buf);                                                     \
1249         iscsit_put_tpg(tpg);                                            \
1250         return count;                                                   \
1251 out:                                                                    \
1252         kfree(buf);                                                     \
1253         iscsit_put_tpg(tpg);                                            \
1254         return -EINVAL;                                         \
1255 }
1256
1257 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1258
1259 DEF_TPG_PARAM(AuthMethod);
1260 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1261
1262 DEF_TPG_PARAM(HeaderDigest);
1263 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1264
1265 DEF_TPG_PARAM(DataDigest);
1266 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1267
1268 DEF_TPG_PARAM(MaxConnections);
1269 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1270
1271 DEF_TPG_PARAM(TargetAlias);
1272 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1273
1274 DEF_TPG_PARAM(InitialR2T);
1275 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1276
1277 DEF_TPG_PARAM(ImmediateData);
1278 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1279
1280 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1281 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1282
1283 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1284 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1285
1286 DEF_TPG_PARAM(MaxBurstLength);
1287 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1288
1289 DEF_TPG_PARAM(FirstBurstLength);
1290 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1291
1292 DEF_TPG_PARAM(DefaultTime2Wait);
1293 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1294
1295 DEF_TPG_PARAM(DefaultTime2Retain);
1296 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1297
1298 DEF_TPG_PARAM(MaxOutstandingR2T);
1299 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1300
1301 DEF_TPG_PARAM(DataPDUInOrder);
1302 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1303
1304 DEF_TPG_PARAM(DataSequenceInOrder);
1305 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1306
1307 DEF_TPG_PARAM(ErrorRecoveryLevel);
1308 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1309
1310 DEF_TPG_PARAM(IFMarker);
1311 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1312
1313 DEF_TPG_PARAM(OFMarker);
1314 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1315
1316 DEF_TPG_PARAM(IFMarkInt);
1317 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1318
1319 DEF_TPG_PARAM(OFMarkInt);
1320 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1321
1322 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1323         &iscsi_tpg_param_AuthMethod.attr,
1324         &iscsi_tpg_param_HeaderDigest.attr,
1325         &iscsi_tpg_param_DataDigest.attr,
1326         &iscsi_tpg_param_MaxConnections.attr,
1327         &iscsi_tpg_param_TargetAlias.attr,
1328         &iscsi_tpg_param_InitialR2T.attr,
1329         &iscsi_tpg_param_ImmediateData.attr,
1330         &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1331         &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1332         &iscsi_tpg_param_MaxBurstLength.attr,
1333         &iscsi_tpg_param_FirstBurstLength.attr,
1334         &iscsi_tpg_param_DefaultTime2Wait.attr,
1335         &iscsi_tpg_param_DefaultTime2Retain.attr,
1336         &iscsi_tpg_param_MaxOutstandingR2T.attr,
1337         &iscsi_tpg_param_DataPDUInOrder.attr,
1338         &iscsi_tpg_param_DataSequenceInOrder.attr,
1339         &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1340         &iscsi_tpg_param_IFMarker.attr,
1341         &iscsi_tpg_param_OFMarker.attr,
1342         &iscsi_tpg_param_IFMarkInt.attr,
1343         &iscsi_tpg_param_OFMarkInt.attr,
1344         NULL,
1345 };
1346
1347 /* End items for lio_target_tpg_param_cit */
1348
1349 /* Start items for lio_target_tpg_cit */
1350
1351 static ssize_t lio_target_tpg_show_enable(
1352         struct se_portal_group *se_tpg,
1353         char *page)
1354 {
1355         struct iscsi_portal_group *tpg = container_of(se_tpg,
1356                         struct iscsi_portal_group, tpg_se_tpg);
1357         ssize_t len;
1358
1359         spin_lock(&tpg->tpg_state_lock);
1360         len = sprintf(page, "%d\n",
1361                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1362         spin_unlock(&tpg->tpg_state_lock);
1363
1364         return len;
1365 }
1366
1367 static ssize_t lio_target_tpg_store_enable(
1368         struct se_portal_group *se_tpg,
1369         const char *page,
1370         size_t count)
1371 {
1372         struct iscsi_portal_group *tpg = container_of(se_tpg,
1373                         struct iscsi_portal_group, tpg_se_tpg);
1374         u32 op;
1375         int ret;
1376
1377         ret = kstrtou32(page, 0, &op);
1378         if (ret)
1379                 return ret;
1380         if ((op != 1) && (op != 0)) {
1381                 pr_err("Illegal value for tpg_enable: %u\n", op);
1382                 return -EINVAL;
1383         }
1384
1385         ret = iscsit_get_tpg(tpg);
1386         if (ret < 0)
1387                 return -EINVAL;
1388
1389         if (op) {
1390                 ret = iscsit_tpg_enable_portal_group(tpg);
1391                 if (ret < 0)
1392                         goto out;
1393         } else {
1394                 /*
1395                  * iscsit_tpg_disable_portal_group() assumes force=1
1396                  */
1397                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1398                 if (ret < 0)
1399                         goto out;
1400         }
1401
1402         iscsit_put_tpg(tpg);
1403         return count;
1404 out:
1405         iscsit_put_tpg(tpg);
1406         return -EINVAL;
1407 }
1408
1409 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1410
1411 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1412         &lio_target_tpg_enable.attr,
1413         NULL,
1414 };
1415
1416 /* End items for lio_target_tpg_cit */
1417
1418 /* Start items for lio_target_tiqn_cit */
1419
1420 static struct se_portal_group *lio_target_tiqn_addtpg(
1421         struct se_wwn *wwn,
1422         struct config_group *group,
1423         const char *name)
1424 {
1425         struct iscsi_portal_group *tpg;
1426         struct iscsi_tiqn *tiqn;
1427         char *tpgt_str;
1428         int ret;
1429         u16 tpgt;
1430
1431         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1432         /*
1433          * Only tpgt_# directory groups can be created below
1434          * target/iscsi/iqn.superturodiskarry/
1435          */
1436         tpgt_str = strstr(name, "tpgt_");
1437         if (!tpgt_str) {
1438                 pr_err("Unable to locate \"tpgt_#\" directory"
1439                                 " group\n");
1440                 return NULL;
1441         }
1442         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1443         ret = kstrtou16(tpgt_str, 0, &tpgt);
1444         if (ret)
1445                 return NULL;
1446
1447         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1448         if (!tpg)
1449                 return NULL;
1450
1451         ret = core_tpg_register(
1452                         &lio_target_fabric_configfs->tf_ops,
1453                         wwn, &tpg->tpg_se_tpg, tpg,
1454                         TRANSPORT_TPG_TYPE_NORMAL);
1455         if (ret < 0)
1456                 return NULL;
1457
1458         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1459         if (ret != 0)
1460                 goto out;
1461
1462         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1463         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1464                         name);
1465         return &tpg->tpg_se_tpg;
1466 out:
1467         core_tpg_deregister(&tpg->tpg_se_tpg);
1468         kfree(tpg);
1469         return NULL;
1470 }
1471
1472 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1473 {
1474         struct iscsi_portal_group *tpg;
1475         struct iscsi_tiqn *tiqn;
1476
1477         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1478         tiqn = tpg->tpg_tiqn;
1479         /*
1480          * iscsit_tpg_del_portal_group() assumes force=1
1481          */
1482         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1483         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1484 }
1485
1486 /* End items for lio_target_tiqn_cit */
1487
1488 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1489
1490 static ssize_t lio_target_wwn_show_attr_lio_version(
1491         struct target_fabric_configfs *tf,
1492         char *page)
1493 {
1494         return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1495 }
1496
1497 TF_WWN_ATTR_RO(lio_target, lio_version);
1498
1499 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1500         &lio_target_wwn_lio_version.attr,
1501         NULL,
1502 };
1503
1504 static struct se_wwn *lio_target_call_coreaddtiqn(
1505         struct target_fabric_configfs *tf,
1506         struct config_group *group,
1507         const char *name)
1508 {
1509         struct config_group *stats_cg;
1510         struct iscsi_tiqn *tiqn;
1511
1512         tiqn = iscsit_add_tiqn((unsigned char *)name);
1513         if (IS_ERR(tiqn))
1514                 return ERR_CAST(tiqn);
1515         /*
1516          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1517          */
1518         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1519
1520         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1521                                 GFP_KERNEL);
1522         if (!stats_cg->default_groups) {
1523                 pr_err("Unable to allocate memory for"
1524                                 " stats_cg->default_groups\n");
1525                 iscsit_del_tiqn(tiqn);
1526                 return ERR_PTR(-ENOMEM);
1527         }
1528
1529         stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1530         stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1531         stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1532         stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1533         stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1534         stats_cg->default_groups[5] = NULL;
1535         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1536                         "iscsi_instance", &iscsi_stat_instance_cit);
1537         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1538                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1539         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1540                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1541         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1542                         "iscsi_login_stats", &iscsi_stat_login_cit);
1543         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1544                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1545
1546         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1547         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1548                         " %s\n", name);
1549         return &tiqn->tiqn_wwn;
1550 }
1551
1552 static void lio_target_call_coredeltiqn(
1553         struct se_wwn *wwn)
1554 {
1555         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1556         struct config_item *df_item;
1557         struct config_group *stats_cg;
1558         int i;
1559
1560         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1561         for (i = 0; stats_cg->default_groups[i]; i++) {
1562                 df_item = &stats_cg->default_groups[i]->cg_item;
1563                 stats_cg->default_groups[i] = NULL;
1564                 config_item_put(df_item);
1565         }
1566         kfree(stats_cg->default_groups);
1567
1568         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1569                         tiqn->tiqn);
1570         iscsit_del_tiqn(tiqn);
1571 }
1572
1573 /* End LIO-Target TIQN struct contig_lio_target_cit */
1574
1575 /* Start lio_target_discovery_auth_cit */
1576
1577 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1578         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1579 static ssize_t iscsi_disc_show_##name(                                  \
1580         struct target_fabric_configfs *tf,                              \
1581         char *page)                                                     \
1582 {                                                                       \
1583         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1584                 page);                                                  \
1585 }                                                                       \
1586 static ssize_t iscsi_disc_store_##name(                                 \
1587         struct target_fabric_configfs *tf,                              \
1588         const char *page,                                               \
1589         size_t count)                                                   \
1590 {                                                                       \
1591         return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1592                 page, count);                                           \
1593 }
1594
1595 #define DEF_DISC_AUTH_INT(name)                                         \
1596         __DEF_NACL_AUTH_INT(disc, name)                                 \
1597 static ssize_t iscsi_disc_show_##name(                                  \
1598         struct target_fabric_configfs *tf,                              \
1599         char *page)                                                     \
1600 {                                                                       \
1601         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1602                         page);                                          \
1603 }
1604
1605 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1606 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1607
1608 /*
1609  * One-way authentication userid
1610  */
1611 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1612 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1613 /*
1614  * One-way authentication password
1615  */
1616 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1617 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1618 /*
1619  * Enforce mutual authentication
1620  */
1621 DEF_DISC_AUTH_INT(authenticate_target);
1622 DISC_AUTH_ATTR_RO(authenticate_target);
1623 /*
1624  * Mutual authentication userid
1625  */
1626 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1627 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1628 /*
1629  * Mutual authentication password
1630  */
1631 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1632 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1633
1634 /*
1635  * enforce_discovery_auth
1636  */
1637 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1638         struct target_fabric_configfs *tf,
1639         char *page)
1640 {
1641         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1642
1643         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1644 }
1645
1646 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1647         struct target_fabric_configfs *tf,
1648         const char *page,
1649         size_t count)
1650 {
1651         struct iscsi_param *param;
1652         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1653         u32 op;
1654         int err;
1655
1656         err = kstrtou32(page, 0, &op);
1657         if (err)
1658                 return -EINVAL;
1659         if ((op != 1) && (op != 0)) {
1660                 pr_err("Illegal value for enforce_discovery_auth:"
1661                                 " %u\n", op);
1662                 return -EINVAL;
1663         }
1664
1665         if (!discovery_tpg) {
1666                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1667                 return -EINVAL;
1668         }
1669
1670         param = iscsi_find_param_from_key(AUTHMETHOD,
1671                                 discovery_tpg->param_list);
1672         if (!param)
1673                 return -EINVAL;
1674
1675         if (op) {
1676                 /*
1677                  * Reset the AuthMethod key to CHAP.
1678                  */
1679                 if (iscsi_update_param_value(param, CHAP) < 0)
1680                         return -EINVAL;
1681
1682                 discovery_tpg->tpg_attrib.authentication = 1;
1683                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1684                 pr_debug("LIO-CORE[0] Successfully enabled"
1685                         " authentication enforcement for iSCSI"
1686                         " Discovery TPG\n");
1687         } else {
1688                 /*
1689                  * Reset the AuthMethod key to CHAP,None
1690                  */
1691                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1692                         return -EINVAL;
1693
1694                 discovery_tpg->tpg_attrib.authentication = 0;
1695                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1696                 pr_debug("LIO-CORE[0] Successfully disabled"
1697                         " authentication enforcement for iSCSI"
1698                         " Discovery TPG\n");
1699         }
1700
1701         return count;
1702 }
1703
1704 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1705
1706 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1707         &iscsi_disc_userid.attr,
1708         &iscsi_disc_password.attr,
1709         &iscsi_disc_authenticate_target.attr,
1710         &iscsi_disc_userid_mutual.attr,
1711         &iscsi_disc_password_mutual.attr,
1712         &iscsi_disc_enforce_discovery_auth.attr,
1713         NULL,
1714 };
1715
1716 /* End lio_target_discovery_auth_cit */
1717
1718 /* Start functions for target_core_fabric_ops */
1719
1720 static char *iscsi_get_fabric_name(void)
1721 {
1722         return "iSCSI";
1723 }
1724
1725 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1726 {
1727         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1728
1729         /* only used for printks or comparism with ->ref_task_tag */
1730         return (__force u32)cmd->init_task_tag;
1731 }
1732
1733 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1734 {
1735         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1736
1737         return cmd->i_state;
1738 }
1739
1740 static u32 lio_sess_get_index(struct se_session *se_sess)
1741 {
1742         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1743
1744         return sess->session_index;
1745 }
1746
1747 static u32 lio_sess_get_initiator_sid(
1748         struct se_session *se_sess,
1749         unsigned char *buf,
1750         u32 size)
1751 {
1752         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1753         /*
1754          * iSCSI Initiator Session Identifier from RFC-3720.
1755          */
1756         return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1757                 sess->isid[0], sess->isid[1], sess->isid[2],
1758                 sess->isid[3], sess->isid[4], sess->isid[5]);
1759 }
1760
1761 static int lio_queue_data_in(struct se_cmd *se_cmd)
1762 {
1763         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1764
1765         cmd->i_state = ISTATE_SEND_DATAIN;
1766         cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1767
1768         return 0;
1769 }
1770
1771 static int lio_write_pending(struct se_cmd *se_cmd)
1772 {
1773         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1774         struct iscsi_conn *conn = cmd->conn;
1775
1776         if (!cmd->immediate_data && !cmd->unsolicited_data)
1777                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1778
1779         return 0;
1780 }
1781
1782 static int lio_write_pending_status(struct se_cmd *se_cmd)
1783 {
1784         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1785         int ret;
1786
1787         spin_lock_bh(&cmd->istate_lock);
1788         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1789         spin_unlock_bh(&cmd->istate_lock);
1790
1791         return ret;
1792 }
1793
1794 static int lio_queue_status(struct se_cmd *se_cmd)
1795 {
1796         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1797
1798         cmd->i_state = ISTATE_SEND_STATUS;
1799
1800         if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1801                 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1802                 return 0;
1803         }
1804         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1805
1806         return 0;
1807 }
1808
1809 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1810 {
1811         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1812
1813         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1814         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1815 }
1816
1817 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1818 {
1819         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1820
1821         return &tpg->tpg_tiqn->tiqn[0];
1822 }
1823
1824 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1825 {
1826         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1827
1828         return tpg->tpgt;
1829 }
1830
1831 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1832 {
1833         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1834
1835         return tpg->tpg_attrib.default_cmdsn_depth;
1836 }
1837
1838 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1839 {
1840         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1841
1842         return tpg->tpg_attrib.generate_node_acls;
1843 }
1844
1845 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1846 {
1847         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1848
1849         return tpg->tpg_attrib.cache_dynamic_acls;
1850 }
1851
1852 static int lio_tpg_check_demo_mode_write_protect(
1853         struct se_portal_group *se_tpg)
1854 {
1855         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1856
1857         return tpg->tpg_attrib.demo_mode_write_protect;
1858 }
1859
1860 static int lio_tpg_check_prod_mode_write_protect(
1861         struct se_portal_group *se_tpg)
1862 {
1863         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1864
1865         return tpg->tpg_attrib.prod_mode_write_protect;
1866 }
1867
1868 static void lio_tpg_release_fabric_acl(
1869         struct se_portal_group *se_tpg,
1870         struct se_node_acl *se_acl)
1871 {
1872         struct iscsi_node_acl *acl = container_of(se_acl,
1873                                 struct iscsi_node_acl, se_node_acl);
1874         kfree(acl);
1875 }
1876
1877 /*
1878  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1879  *
1880  * Also, this function calls iscsit_inc_session_usage_count() on the
1881  * struct iscsi_session in question.
1882  */
1883 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1884 {
1885         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1886
1887         spin_lock(&sess->conn_lock);
1888         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1889             atomic_read(&sess->session_logout) ||
1890             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1891                 spin_unlock(&sess->conn_lock);
1892                 return 0;
1893         }
1894         atomic_set(&sess->session_reinstatement, 1);
1895         spin_unlock(&sess->conn_lock);
1896
1897         iscsit_stop_time2retain_timer(sess);
1898         iscsit_stop_session(sess, 1, 1);
1899
1900         return 1;
1901 }
1902
1903 /*
1904  * Calls iscsit_dec_session_usage_count() as inverse of
1905  * lio_tpg_shutdown_session()
1906  */
1907 static void lio_tpg_close_session(struct se_session *se_sess)
1908 {
1909         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1910         /*
1911          * If the iSCSI Session for the iSCSI Initiator Node exists,
1912          * forcefully shutdown the iSCSI NEXUS.
1913          */
1914         iscsit_close_session(sess);
1915 }
1916
1917 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1918 {
1919         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1920
1921         return tpg->tpg_tiqn->tiqn_index;
1922 }
1923
1924 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1925 {
1926         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1927                                 se_node_acl);
1928         struct se_portal_group *se_tpg = se_acl->se_tpg;
1929         struct iscsi_portal_group *tpg = container_of(se_tpg,
1930                                 struct iscsi_portal_group, tpg_se_tpg);
1931
1932         acl->node_attrib.nacl = acl;
1933         iscsit_set_default_node_attribues(acl, tpg);
1934 }
1935
1936 static int lio_check_stop_free(struct se_cmd *se_cmd)
1937 {
1938         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1939 }
1940
1941 static void lio_release_cmd(struct se_cmd *se_cmd)
1942 {
1943         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1944
1945         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1946         iscsit_release_cmd(cmd);
1947 }
1948
1949 /* End functions for target_core_fabric_ops */
1950
1951 int iscsi_target_register_configfs(void)
1952 {
1953         struct target_fabric_configfs *fabric;
1954         int ret;
1955
1956         lio_target_fabric_configfs = NULL;
1957         fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1958         if (IS_ERR(fabric)) {
1959                 pr_err("target_fabric_configfs_init() for"
1960                                 " LIO-Target failed!\n");
1961                 return PTR_ERR(fabric);
1962         }
1963         /*
1964          * Setup the fabric API of function pointers used by target_core_mod..
1965          */
1966         fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1967         fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1968         fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1969         fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1970         fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1971         fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1972         fabric->tf_ops.tpg_get_pr_transport_id_len =
1973                                 &iscsi_get_pr_transport_id_len;
1974         fabric->tf_ops.tpg_parse_pr_out_transport_id =
1975                                 &iscsi_parse_pr_out_transport_id;
1976         fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1977         fabric->tf_ops.tpg_check_demo_mode_cache =
1978                                 &lio_tpg_check_demo_mode_cache;
1979         fabric->tf_ops.tpg_check_demo_mode_write_protect =
1980                                 &lio_tpg_check_demo_mode_write_protect;
1981         fabric->tf_ops.tpg_check_prod_mode_write_protect =
1982                                 &lio_tpg_check_prod_mode_write_protect;
1983         fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1984         fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1985         fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
1986         fabric->tf_ops.check_stop_free = &lio_check_stop_free,
1987         fabric->tf_ops.release_cmd = &lio_release_cmd;
1988         fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
1989         fabric->tf_ops.close_session = &lio_tpg_close_session;
1990         fabric->tf_ops.sess_get_index = &lio_sess_get_index;
1991         fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
1992         fabric->tf_ops.write_pending = &lio_write_pending;
1993         fabric->tf_ops.write_pending_status = &lio_write_pending_status;
1994         fabric->tf_ops.set_default_node_attributes =
1995                                 &lio_set_default_node_attributes;
1996         fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
1997         fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
1998         fabric->tf_ops.queue_data_in = &lio_queue_data_in;
1999         fabric->tf_ops.queue_status = &lio_queue_status;
2000         fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
2001         /*
2002          * Setup function pointers for generic logic in target_core_fabric_configfs.c
2003          */
2004         fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
2005         fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
2006         fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
2007         fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
2008         fabric->tf_ops.fabric_post_link = NULL;
2009         fabric->tf_ops.fabric_pre_unlink = NULL;
2010         fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
2011         fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
2012         fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
2013         fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
2014         /*
2015          * Setup default attribute lists for various fabric->tf_cit_tmpl
2016          * sturct config_item_type's
2017          */
2018         fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
2019         fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
2020         fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
2021         fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
2022         fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
2023         fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
2024         fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
2025         fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
2026         fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
2027         fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
2028         fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
2029
2030         ret = target_fabric_configfs_register(fabric);
2031         if (ret < 0) {
2032                 pr_err("target_fabric_configfs_register() for"
2033                                 " LIO-Target failed!\n");
2034                 target_fabric_configfs_free(fabric);
2035                 return ret;
2036         }
2037
2038         lio_target_fabric_configfs = fabric;
2039         pr_debug("LIO_TARGET[0] - Set fabric ->"
2040                         " lio_target_fabric_configfs\n");
2041         return 0;
2042 }
2043
2044
2045 void iscsi_target_deregister_configfs(void)
2046 {
2047         if (!lio_target_fabric_configfs)
2048                 return;
2049         /*
2050          * Shutdown discovery sessions and disable discovery TPG
2051          */
2052         if (iscsit_global->discovery_tpg)
2053                 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
2054
2055         target_fabric_configfs_deregister(lio_target_fabric_configfs);
2056         lio_target_fabric_configfs = NULL;
2057         pr_debug("LIO_TARGET[0] - Cleared"
2058                                 " lio_target_fabric_configfs\n");
2059 }