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         if (count >= sizeof(auth->name))                                \
 478                 return -EINVAL;                                         \
 479         snprintf(auth->name, sizeof(auth->name), "%s", page);           \
 480         if (!strncmp("NULL", auth->name, 4))                            \
 481                 auth->naf_flags &= ~flags;                              \
 482         else                                                            \
 483                 auth->naf_flags |= flags;                               \
 484                                                                         \
 485         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                    \
 486             (auth->naf_flags & NAF_PASSWORD_IN_SET))                    \
 487                 auth->authenticate_target = 1;                          \
 488         else                                                            \
 489                 auth->authenticate_target = 0;                          \
 490                                                                         \
 491         return count;                                                   \
 492 }
 493
 494 #define __DEF_NACL_AUTH_INT(prefix, name)                               \
 495 static ssize_t __iscsi_##prefix##_show_##name(                          \
 496         struct iscsi_node_acl *nacl,                                    \
 497         char *page)                                                     \
 498 {                                                                       \
 499         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 500                                                                         \
 501         if (!capable(CAP_SYS_ADMIN))                                    \
 502                 return -EPERM;                                          \
 503                                                                         \
 504         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);           \
 505 }
 506
 507 #define DEF_NACL_AUTH_STR(name, flags)                                  \
 508         __DEF_NACL_AUTH_STR(nacl_auth, name, flags)                     \
 509 static ssize_t iscsi_nacl_auth_show_##name(                             \
 510         struct se_node_acl *nacl,                                       \
 511         char *page)                                                     \
 512 {                                                                       \
 513         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 514                         struct iscsi_node_acl, se_node_acl), page);             \
 515 }                                                                       \
 516 static ssize_t iscsi_nacl_auth_store_##name(                            \
 517         struct se_node_acl *nacl,                                       \
 518         const char *page,                                               \
 519         size_t count)                                                   \
 520 {                                                                       \
 521         return __iscsi_nacl_auth_store_##name(container_of(nacl,        \
 522                         struct iscsi_node_acl, se_node_acl), page, count);      \
 523 }
 524
 525 #define DEF_NACL_AUTH_INT(name)                                         \
 526         __DEF_NACL_AUTH_INT(nacl_auth, name)                            \
 527 static ssize_t iscsi_nacl_auth_show_##name(                             \
 528         struct se_node_acl *nacl,                                       \
 529         char *page)                                                     \
 530 {                                                                       \
 531         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 532                         struct iscsi_node_acl, se_node_acl), page);             \
 533 }
 534
 535 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
 536 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
 537
 538 /*
 539  * One-way authentication userid
 540  */
 541 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
 542 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
 543 /*
 544  * One-way authentication password
 545  */
 546 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
 547 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
 548 /*
 549  * Enforce mutual authentication
 550  */
 551 DEF_NACL_AUTH_INT(authenticate_target);
 552 AUTH_ATTR_RO(authenticate_target);
 553 /*
 554  * Mutual authentication userid
 555  */
 556 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
 557 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
 558 /*
 559  * Mutual authentication password
 560  */
 561 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
 562 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
 563
 564 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
 565         &iscsi_nacl_auth_userid.attr,
 566         &iscsi_nacl_auth_password.attr,
 567         &iscsi_nacl_auth_authenticate_target.attr,
 568         &iscsi_nacl_auth_userid_mutual.attr,
 569         &iscsi_nacl_auth_password_mutual.attr,
 570         NULL,
 571 };
 572
 573 /* End items for lio_target_nacl_auth_cit */
 574
 575 /* Start items for lio_target_nacl_param_cit */
 576
 577 #define DEF_NACL_PARAM(name)                                            \
 578 static ssize_t iscsi_nacl_param_show_##name(                            \
 579         struct se_node_acl *se_nacl,                                    \
 580         char *page)                                                     \
 581 {                                                                       \
 582         struct iscsi_session *sess;                                     \
 583         struct se_session *se_sess;                                     \
 584         ssize_t rb;                                                     \
 585                                                                         \
 586         spin_lock_bh(&se_nacl->nacl_sess_lock);                         \
 587         se_sess = se_nacl->nacl_sess;                                   \
 588         if (!se_sess) {                                                 \
 589                 rb = snprintf(page, PAGE_SIZE,                          \
 590                         "No Active iSCSI Session\n");                   \
 591         } else {                                                        \
 592                 sess = se_sess->fabric_sess_ptr;                        \
 593                 rb = snprintf(page, PAGE_SIZE, "%u\n",                  \
 594                         (u32)sess->sess_ops->name);                     \
 595         }                                                               \
 596         spin_unlock_bh(&se_nacl->nacl_sess_lock);                       \
 597                                                                         \
 598         return rb;                                                      \
 599 }
 600
 601 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
 602
 603 DEF_NACL_PARAM(MaxConnections);
 604 NACL_PARAM_ATTR(MaxConnections);
 605
 606 DEF_NACL_PARAM(InitialR2T);
 607 NACL_PARAM_ATTR(InitialR2T);
 608
 609 DEF_NACL_PARAM(ImmediateData);
 610 NACL_PARAM_ATTR(ImmediateData);
 611
 612 DEF_NACL_PARAM(MaxBurstLength);
 613 NACL_PARAM_ATTR(MaxBurstLength);
 614
 615 DEF_NACL_PARAM(FirstBurstLength);
 616 NACL_PARAM_ATTR(FirstBurstLength);
 617
 618 DEF_NACL_PARAM(DefaultTime2Wait);
 619 NACL_PARAM_ATTR(DefaultTime2Wait);
 620
 621 DEF_NACL_PARAM(DefaultTime2Retain);
 622 NACL_PARAM_ATTR(DefaultTime2Retain);
 623
 624 DEF_NACL_PARAM(MaxOutstandingR2T);
 625 NACL_PARAM_ATTR(MaxOutstandingR2T);
 626
 627 DEF_NACL_PARAM(DataPDUInOrder);
 628 NACL_PARAM_ATTR(DataPDUInOrder);
 629
 630 DEF_NACL_PARAM(DataSequenceInOrder);
 631 NACL_PARAM_ATTR(DataSequenceInOrder);
 632
 633 DEF_NACL_PARAM(ErrorRecoveryLevel);
 634 NACL_PARAM_ATTR(ErrorRecoveryLevel);
 635
 636 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
 637         &iscsi_nacl_param_MaxConnections.attr,
 638         &iscsi_nacl_param_InitialR2T.attr,
 639         &iscsi_nacl_param_ImmediateData.attr,
 640         &iscsi_nacl_param_MaxBurstLength.attr,
 641         &iscsi_nacl_param_FirstBurstLength.attr,
 642         &iscsi_nacl_param_DefaultTime2Wait.attr,
 643         &iscsi_nacl_param_DefaultTime2Retain.attr,
 644         &iscsi_nacl_param_MaxOutstandingR2T.attr,
 645         &iscsi_nacl_param_DataPDUInOrder.attr,
 646         &iscsi_nacl_param_DataSequenceInOrder.attr,
 647         &iscsi_nacl_param_ErrorRecoveryLevel.attr,
 648         NULL,
 649 };
 650
 651 /* End items for lio_target_nacl_param_cit */
 652
 653 /* Start items for lio_target_acl_cit */
 654
 655 static ssize_t lio_target_nacl_show_info(
 656         struct se_node_acl *se_nacl,
 657         char *page)
 658 {
 659         struct iscsi_session *sess;
 660         struct iscsi_conn *conn;
 661         struct se_session *se_sess;
 662         ssize_t rb = 0;
 663
 664         spin_lock_bh(&se_nacl->nacl_sess_lock);
 665         se_sess = se_nacl->nacl_sess;
 666         if (!se_sess) {
 667                 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
 668                         " Endpoint: %s\n", se_nacl->initiatorname);
 669         } else {
 670                 sess = se_sess->fabric_sess_ptr;
 671
 672                 rb += sprintf(page+rb, "InitiatorName: %s\n",
 673                         sess->sess_ops->InitiatorName);
 674                 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
 675                         sess->sess_ops->InitiatorAlias);
 676
 677                 rb += sprintf(page+rb, "LIO Session ID: %u   "
 678                         "ISID: 0x%02x %02x %02x %02x %02x %02x  "
 679                         "TSIH: %hu  ", sess->sid,
 680                         sess->isid[0], sess->isid[1], sess->isid[2],
 681                         sess->isid[3], sess->isid[4], sess->isid[5],
 682                         sess->tsih);
 683                 rb += sprintf(page+rb, "SessionType: %s\n",
 684                                 (sess->sess_ops->SessionType) ?
 685                                 "Discovery" : "Normal");
 686                 rb += sprintf(page+rb, "Session State: ");
 687                 switch (sess->session_state) {
 688                 case TARG_SESS_STATE_FREE:
 689                         rb += sprintf(page+rb, "TARG_SESS_FREE\n");
 690                         break;
 691                 case TARG_SESS_STATE_ACTIVE:
 692                         rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
 693                         break;
 694                 case TARG_SESS_STATE_LOGGED_IN:
 695                         rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
 696                         break;
 697                 case TARG_SESS_STATE_FAILED:
 698                         rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
 699                         break;
 700                 case TARG_SESS_STATE_IN_CONTINUE:
 701                         rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
 702                         break;
 703                 default:
 704                         rb += sprintf(page+rb, "ERROR: Unknown Session"
 705                                         " State!\n");
 706                         break;
 707                 }
 708
 709                 rb += sprintf(page+rb, "---------------------[iSCSI Session"
 710                                 " Values]-----------------------\n");
 711                 rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
 712                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
 713                 rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
 714                                 "   0x%08x   0x%08x\n",
 715                         sess->cmdsn_window,
 716                         (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
 717                         sess->exp_cmd_sn, sess->max_cmd_sn,
 718                         sess->init_task_tag, sess->targ_xfer_tag);
 719                 rb += sprintf(page+rb, "----------------------[iSCSI"
 720                                 " Connections]-------------------------\n");
 721
 722                 spin_lock(&sess->conn_lock);
 723                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
 724                         rb += sprintf(page+rb, "CID: %hu  Connection"
 725                                         " State: ", conn->cid);
 726                         switch (conn->conn_state) {
 727                         case TARG_CONN_STATE_FREE:
 728                                 rb += sprintf(page+rb,
 729                                         "TARG_CONN_STATE_FREE\n");
 730                                 break;
 731                         case TARG_CONN_STATE_XPT_UP:
 732                                 rb += sprintf(page+rb,
 733                                         "TARG_CONN_STATE_XPT_UP\n");
 734                                 break;
 735                         case TARG_CONN_STATE_IN_LOGIN:
 736                                 rb += sprintf(page+rb,
 737                                         "TARG_CONN_STATE_IN_LOGIN\n");
 738                                 break;
 739                         case TARG_CONN_STATE_LOGGED_IN:
 740                                 rb += sprintf(page+rb,
 741                                         "TARG_CONN_STATE_LOGGED_IN\n");
 742                                 break;
 743                         case TARG_CONN_STATE_IN_LOGOUT:
 744                                 rb += sprintf(page+rb,
 745                                         "TARG_CONN_STATE_IN_LOGOUT\n");
 746                                 break;
 747                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
 748                                 rb += sprintf(page+rb,
 749                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
 750                                 break;
 751                         case TARG_CONN_STATE_CLEANUP_WAIT:
 752                                 rb += sprintf(page+rb,
 753                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
 754                                 break;
 755                         default:
 756                                 rb += sprintf(page+rb,
 757                                         "ERROR: Unknown Connection State!\n");
 758                                 break;
 759                         }
 760
 761                         rb += sprintf(page+rb, "   Address %s %s", conn->login_ip,
 762                                 (conn->network_transport == ISCSI_TCP) ?
 763                                 "TCP" : "SCTP");
 764                         rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
 765                                 conn->stat_sn);
 766                 }
 767                 spin_unlock(&sess->conn_lock);
 768         }
 769         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 770
 771         return rb;
 772 }
 773
 774 TF_NACL_BASE_ATTR_RO(lio_target, info);
 775
 776 static ssize_t lio_target_nacl_show_cmdsn_depth(
 777         struct se_node_acl *se_nacl,
 778         char *page)
 779 {
 780         return sprintf(page, "%u\n", se_nacl->queue_depth);
 781 }
 782
 783 static ssize_t lio_target_nacl_store_cmdsn_depth(
 784         struct se_node_acl *se_nacl,
 785         const char *page,
 786         size_t count)
 787 {
 788         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 789         struct iscsi_portal_group *tpg = container_of(se_tpg,
 790                         struct iscsi_portal_group, tpg_se_tpg);
 791         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
 792         u32 cmdsn_depth = 0;
 793         int ret;
 794
 795         ret = kstrtou32(page, 0, &cmdsn_depth);
 796         if (ret)
 797                 return ret;
 798         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 799                 pr_err("Passed cmdsn_depth: %u exceeds"
 800                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
 801                         TA_DEFAULT_CMDSN_DEPTH_MAX);
 802                 return -EINVAL;
 803         }
 804         acl_ci = &se_nacl->acl_group.cg_item;
 805         if (!acl_ci) {
 806                 pr_err("Unable to locatel acl_ci\n");
 807                 return -EINVAL;
 808         }
 809         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
 810         if (!tpg_ci) {
 811                 pr_err("Unable to locate tpg_ci\n");
 812                 return -EINVAL;
 813         }
 814         wwn_ci = &tpg_ci->ci_group->cg_item;
 815         if (!wwn_ci) {
 816                 pr_err("Unable to locate config_item wwn_ci\n");
 817                 return -EINVAL;
 818         }
 819
 820         if (iscsit_get_tpg(tpg) < 0)
 821                 return -EINVAL;
 822         /*
 823          * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
 824          */
 825         ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
 826                                 config_item_name(acl_ci), cmdsn_depth, 1);
 827
 828         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
 829                 "InitiatorName: %s\n", config_item_name(wwn_ci),
 830                 config_item_name(tpg_ci), cmdsn_depth,
 831                 config_item_name(acl_ci));
 832
 833         iscsit_put_tpg(tpg);
 834         return (!ret) ? count : (ssize_t)ret;
 835 }
 836
 837 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
 838
 839 static ssize_t lio_target_nacl_show_tag(
 840         struct se_node_acl *se_nacl,
 841         char *page)
 842 {
 843         return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
 844 }
 845
 846 static ssize_t lio_target_nacl_store_tag(
 847         struct se_node_acl *se_nacl,
 848         const char *page,
 849         size_t count)
 850 {
 851         int ret;
 852
 853         ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
 854
 855         if (ret < 0)
 856                 return ret;
 857         return count;
 858 }
 859
 860 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
 861
 862 static struct configfs_attribute *lio_target_initiator_attrs[] = {
 863         &lio_target_nacl_info.attr,
 864         &lio_target_nacl_cmdsn_depth.attr,
 865         &lio_target_nacl_tag.attr,
 866         NULL,
 867 };
 868
 869 static struct se_node_acl *lio_tpg_alloc_fabric_acl(
 870         struct se_portal_group *se_tpg)
 871 {
 872         struct iscsi_node_acl *acl;
 873
 874         acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
 875         if (!acl) {
 876                 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
 877                 return NULL;
 878         }
 879
 880         return &acl->se_node_acl;
 881 }
 882
 883 static struct se_node_acl *lio_target_make_nodeacl(
 884         struct se_portal_group *se_tpg,
 885         struct config_group *group,
 886         const char *name)
 887 {
 888         struct config_group *stats_cg;
 889         struct iscsi_node_acl *acl;
 890         struct se_node_acl *se_nacl_new, *se_nacl;
 891         struct iscsi_portal_group *tpg = container_of(se_tpg,
 892                         struct iscsi_portal_group, tpg_se_tpg);
 893         u32 cmdsn_depth;
 894
 895         se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
 896         if (!se_nacl_new)
 897                 return ERR_PTR(-ENOMEM);
 898
 899         cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth;
 900         /*
 901          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 902          * when converting a NdoeACL from demo mode -> explict
 903          */
 904         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 905                                 name, cmdsn_depth);
 906         if (IS_ERR(se_nacl))
 907                 return se_nacl;
 908
 909         acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
 910         stats_cg = &se_nacl->acl_fabric_stat_group;
 911
 912         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 913                                 GFP_KERNEL);
 914         if (!stats_cg->default_groups) {
 915                 pr_err("Unable to allocate memory for"
 916                                 " stats_cg->default_groups\n");
 917                 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 918                 kfree(acl);
 919                 return ERR_PTR(-ENOMEM);
 920         }
 921
 922         stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
 923         stats_cg->default_groups[1] = NULL;
 924         config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
 925                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 926
 927         return se_nacl;
 928 }
 929
 930 static void lio_target_drop_nodeacl(
 931         struct se_node_acl *se_nacl)
 932 {
 933         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 934         struct iscsi_node_acl *acl = container_of(se_nacl,
 935                         struct iscsi_node_acl, se_node_acl);
 936         struct config_item *df_item;
 937         struct config_group *stats_cg;
 938         int i;
 939
 940         stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
 941         for (i = 0; stats_cg->default_groups[i]; i++) {
 942                 df_item = &stats_cg->default_groups[i]->cg_item;
 943                 stats_cg->default_groups[i] = NULL;
 944                 config_item_put(df_item);
 945         }
 946         kfree(stats_cg->default_groups);
 947
 948         core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 949         kfree(acl);
 950 }
 951
 952 /* End items for lio_target_acl_cit */
 953
 954 /* Start items for lio_target_tpg_attrib_cit */
 955
 956 #define DEF_TPG_ATTRIB(name)                                            \
 957                                                                         \
 958 static ssize_t iscsi_tpg_attrib_show_##name(                            \
 959         struct se_portal_group *se_tpg,                         \
 960         char *page)                                                     \
 961 {                                                                       \
 962         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 963                         struct iscsi_portal_group, tpg_se_tpg); \
 964         ssize_t rb;                                                     \
 965                                                                         \
 966         if (iscsit_get_tpg(tpg) < 0)                                    \
 967                 return -EINVAL;                                         \
 968                                                                         \
 969         rb = sprintf(page, "%u\n", tpg->tpg_attrib.name);               \
 970         iscsit_put_tpg(tpg);                                            \
 971         return rb;                                                      \
 972 }                                                                       \
 973                                                                         \
 974 static ssize_t iscsi_tpg_attrib_store_##name(                           \
 975         struct se_portal_group *se_tpg,                         \
 976         const char *page,                                               \
 977         size_t count)                                                   \
 978 {                                                                       \
 979         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 980                         struct iscsi_portal_group, tpg_se_tpg); \
 981         u32 val;                                                        \
 982         int ret;                                                        \
 983                                                                         \
 984         if (iscsit_get_tpg(tpg) < 0)                                    \
 985                 return -EINVAL;                                         \
 986                                                                         \
 987         ret = kstrtou32(page, 0, &val);                                 \
 988         if (ret)                                                        \
 989                 goto out;                                               \
 990         ret = iscsit_ta_##name(tpg, val);                               \
 991         if (ret < 0)                                                    \
 992                 goto out;                                               \
 993                                                                         \
 994         iscsit_put_tpg(tpg);                                            \
 995         return count;                                                   \
 996 out:                                                                    \
 997         iscsit_put_tpg(tpg);                                            \
 998         return ret;                                                     \
 999 }
1000
1001 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
1002
1003 /*
1004  * Define iscsi_tpg_attrib_s_authentication
1005  */
1006 DEF_TPG_ATTRIB(authentication);
1007 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1008 /*
1009  * Define iscsi_tpg_attrib_s_login_timeout
1010  */
1011 DEF_TPG_ATTRIB(login_timeout);
1012 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1013 /*
1014  * Define iscsi_tpg_attrib_s_netif_timeout
1015  */
1016 DEF_TPG_ATTRIB(netif_timeout);
1017 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1018 /*
1019  * Define iscsi_tpg_attrib_s_generate_node_acls
1020  */
1021 DEF_TPG_ATTRIB(generate_node_acls);
1022 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1023 /*
1024  * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1025  */
1026 DEF_TPG_ATTRIB(default_cmdsn_depth);
1027 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1028 /*
1029  Define iscsi_tpg_attrib_s_cache_dynamic_acls
1030  */
1031 DEF_TPG_ATTRIB(cache_dynamic_acls);
1032 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1033 /*
1034  * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1035  */
1036 DEF_TPG_ATTRIB(demo_mode_write_protect);
1037 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1038 /*
1039  * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1040  */
1041 DEF_TPG_ATTRIB(prod_mode_write_protect);
1042 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1043 /*
1044  * Define iscsi_tpg_attrib_s_demo_mode_discovery,
1045  */
1046 DEF_TPG_ATTRIB(demo_mode_discovery);
1047 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
1048 /*
1049  * Define iscsi_tpg_attrib_s_default_erl
1050  */
1051 DEF_TPG_ATTRIB(default_erl);
1052 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
1053 /*
1054  * Define iscsi_tpg_attrib_s_t10_pi
1055  */
1056 DEF_TPG_ATTRIB(t10_pi);
1057 TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR);
1058
1059 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1060         &iscsi_tpg_attrib_authentication.attr,
1061         &iscsi_tpg_attrib_login_timeout.attr,
1062         &iscsi_tpg_attrib_netif_timeout.attr,
1063         &iscsi_tpg_attrib_generate_node_acls.attr,
1064         &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1065         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1066         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1067         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1068         &iscsi_tpg_attrib_demo_mode_discovery.attr,
1069         &iscsi_tpg_attrib_default_erl.attr,
1070         &iscsi_tpg_attrib_t10_pi.attr,
1071         NULL,
1072 };
1073
1074 /* End items for lio_target_tpg_attrib_cit */
1075
1076 /* Start items for lio_target_tpg_auth_cit */
1077
1078 #define __DEF_TPG_AUTH_STR(prefix, name, flags)                                 \
1079 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1080         struct se_portal_group *se_tpg,                                         \
1081         char *page)                                                             \
1082 {                                                                               \
1083         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1084                                 struct iscsi_portal_group, tpg_se_tpg);         \
1085         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1086                                                                                 \
1087         if (!capable(CAP_SYS_ADMIN))                                            \
1088                 return -EPERM;                                                  \
1089                                                                                 \
1090         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);                   \
1091 }                                                                               \
1092                                                                                 \
1093 static ssize_t __iscsi_##prefix##_store_##name(                                 \
1094         struct se_portal_group *se_tpg,                                         \
1095         const char *page,                                                       \
1096         size_t count)                                                           \
1097 {                                                                               \
1098         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1099                                 struct iscsi_portal_group, tpg_se_tpg);         \
1100         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1101                                                                                 \
1102         if (!capable(CAP_SYS_ADMIN))                                            \
1103                 return -EPERM;                                                  \
1104                                                                                 \
1105         snprintf(auth->name, sizeof(auth->name), "%s", page);                   \
1106         if (!(strncmp("NULL", auth->name, 4)))                                  \
1107                 auth->naf_flags &= ~flags;                                      \
1108         else                                                                    \
1109                 auth->naf_flags |= flags;                                       \
1110                                                                                 \
1111         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                            \
1112             (auth->naf_flags & NAF_PASSWORD_IN_SET))                            \
1113                 auth->authenticate_target = 1;                                  \
1114         else                                                                    \
1115                 auth->authenticate_target = 0;                                  \
1116                                                                                 \
1117         return count;                                                           \
1118 }
1119
1120 #define __DEF_TPG_AUTH_INT(prefix, name)                                        \
1121 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1122         struct se_portal_group *se_tpg,                                         \
1123         char *page)                                                             \
1124 {                                                                               \
1125         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1126                                 struct iscsi_portal_group, tpg_se_tpg);         \
1127         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1128                                                                                 \
1129         if (!capable(CAP_SYS_ADMIN))                                            \
1130                 return -EPERM;                                                  \
1131                                                                                 \
1132         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);                   \
1133 }
1134
1135 #define DEF_TPG_AUTH_STR(name, flags)                                           \
1136         __DEF_TPG_AUTH_STR(tpg_auth, name, flags)                               \
1137 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1138         struct se_portal_group *se_tpg,                                         \
1139         char *page)                                                             \
1140 {                                                                               \
1141         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1142 }                                                                               \
1143                                                                                 \
1144 static ssize_t iscsi_tpg_auth_store_##name(                                     \
1145         struct se_portal_group *se_tpg,                                         \
1146         const char *page,                                                       \
1147         size_t count)                                                           \
1148 {                                                                               \
1149         return __iscsi_tpg_auth_store_##name(se_tpg, page, count);              \
1150 }
1151
1152 #define DEF_TPG_AUTH_INT(name)                                                  \
1153         __DEF_TPG_AUTH_INT(tpg_auth, name)                                      \
1154 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1155         struct se_portal_group *se_tpg,                                         \
1156         char *page)                                                             \
1157 {                                                                               \
1158         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1159 }
1160
1161 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1162 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1163
1164 /*
1165  *  * One-way authentication userid
1166  *   */
1167 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1168 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1169 /*
1170  *  * One-way authentication password
1171  *   */
1172 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1173 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1174 /*
1175  *  * Enforce mutual authentication
1176  *   */
1177 DEF_TPG_AUTH_INT(authenticate_target);
1178 TPG_AUTH_ATTR_RO(authenticate_target);
1179 /*
1180  *  * Mutual authentication userid
1181  *   */
1182 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1183 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1184 /*
1185  *  * Mutual authentication password
1186  *   */
1187 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1188 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1189
1190 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1191         &iscsi_tpg_auth_userid.attr,
1192         &iscsi_tpg_auth_password.attr,
1193         &iscsi_tpg_auth_authenticate_target.attr,
1194         &iscsi_tpg_auth_userid_mutual.attr,
1195         &iscsi_tpg_auth_password_mutual.attr,
1196         NULL,
1197 };
1198
1199 /* End items for lio_target_tpg_auth_cit */
1200
1201 /* Start items for lio_target_tpg_param_cit */
1202
1203 #define DEF_TPG_PARAM(name)                                             \
1204 static ssize_t iscsi_tpg_param_show_##name(                             \
1205         struct se_portal_group *se_tpg,                                 \
1206         char *page)                                                     \
1207 {                                                                       \
1208         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1209                         struct iscsi_portal_group, tpg_se_tpg);         \
1210         struct iscsi_param *param;                                      \
1211         ssize_t rb;                                                     \
1212                                                                         \
1213         if (iscsit_get_tpg(tpg) < 0)                                    \
1214                 return -EINVAL;                                         \
1215                                                                         \
1216         param = iscsi_find_param_from_key(__stringify(name),            \
1217                                 tpg->param_list);                       \
1218         if (!param) {                                                   \
1219                 iscsit_put_tpg(tpg);                                    \
1220                 return -EINVAL;                                         \
1221         }                                                               \
1222         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
1223                                                                         \
1224         iscsit_put_tpg(tpg);                                            \
1225         return rb;                                                      \
1226 }                                                                       \
1227 static ssize_t iscsi_tpg_param_store_##name(                            \
1228         struct se_portal_group *se_tpg,                         \
1229         const char *page,                                               \
1230         size_t count)                                                   \
1231 {                                                                       \
1232         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1233                         struct iscsi_portal_group, tpg_se_tpg);         \
1234         char *buf;                                                      \
1235         int ret, len;                                                   \
1236                                                                         \
1237         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1238         if (!buf)                                                       \
1239                 return -ENOMEM;                                         \
1240         len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);       \
1241         if (isspace(buf[len-1]))                                        \
1242                 buf[len-1] = '\0'; /* Kill newline */                   \
1243                                                                         \
1244         if (iscsit_get_tpg(tpg) < 0) {                                  \
1245                 kfree(buf);                                             \
1246                 return -EINVAL;                                         \
1247         }                                                               \
1248                                                                         \
1249         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1250         if (ret < 0)                                                    \
1251                 goto out;                                               \
1252                                                                         \
1253         kfree(buf);                                                     \
1254         iscsit_put_tpg(tpg);                                            \
1255         return count;                                                   \
1256 out:                                                                    \
1257         kfree(buf);                                                     \
1258         iscsit_put_tpg(tpg);                                            \
1259         return -EINVAL;                                         \
1260 }
1261
1262 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1263
1264 DEF_TPG_PARAM(AuthMethod);
1265 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1266
1267 DEF_TPG_PARAM(HeaderDigest);
1268 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1269
1270 DEF_TPG_PARAM(DataDigest);
1271 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1272
1273 DEF_TPG_PARAM(MaxConnections);
1274 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1275
1276 DEF_TPG_PARAM(TargetAlias);
1277 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1278
1279 DEF_TPG_PARAM(InitialR2T);
1280 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1281
1282 DEF_TPG_PARAM(ImmediateData);
1283 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1284
1285 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1286 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1287
1288 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1289 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1290
1291 DEF_TPG_PARAM(MaxBurstLength);
1292 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1293
1294 DEF_TPG_PARAM(FirstBurstLength);
1295 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1296
1297 DEF_TPG_PARAM(DefaultTime2Wait);
1298 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1299
1300 DEF_TPG_PARAM(DefaultTime2Retain);
1301 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1302
1303 DEF_TPG_PARAM(MaxOutstandingR2T);
1304 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1305
1306 DEF_TPG_PARAM(DataPDUInOrder);
1307 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1308
1309 DEF_TPG_PARAM(DataSequenceInOrder);
1310 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1311
1312 DEF_TPG_PARAM(ErrorRecoveryLevel);
1313 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1314
1315 DEF_TPG_PARAM(IFMarker);
1316 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1317
1318 DEF_TPG_PARAM(OFMarker);
1319 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1320
1321 DEF_TPG_PARAM(IFMarkInt);
1322 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1323
1324 DEF_TPG_PARAM(OFMarkInt);
1325 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1326
1327 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1328         &iscsi_tpg_param_AuthMethod.attr,
1329         &iscsi_tpg_param_HeaderDigest.attr,
1330         &iscsi_tpg_param_DataDigest.attr,
1331         &iscsi_tpg_param_MaxConnections.attr,
1332         &iscsi_tpg_param_TargetAlias.attr,
1333         &iscsi_tpg_param_InitialR2T.attr,
1334         &iscsi_tpg_param_ImmediateData.attr,
1335         &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1336         &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1337         &iscsi_tpg_param_MaxBurstLength.attr,
1338         &iscsi_tpg_param_FirstBurstLength.attr,
1339         &iscsi_tpg_param_DefaultTime2Wait.attr,
1340         &iscsi_tpg_param_DefaultTime2Retain.attr,
1341         &iscsi_tpg_param_MaxOutstandingR2T.attr,
1342         &iscsi_tpg_param_DataPDUInOrder.attr,
1343         &iscsi_tpg_param_DataSequenceInOrder.attr,
1344         &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1345         &iscsi_tpg_param_IFMarker.attr,
1346         &iscsi_tpg_param_OFMarker.attr,
1347         &iscsi_tpg_param_IFMarkInt.attr,
1348         &iscsi_tpg_param_OFMarkInt.attr,
1349         NULL,
1350 };
1351
1352 /* End items for lio_target_tpg_param_cit */
1353
1354 /* Start items for lio_target_tpg_cit */
1355
1356 static ssize_t lio_target_tpg_show_enable(
1357         struct se_portal_group *se_tpg,
1358         char *page)
1359 {
1360         struct iscsi_portal_group *tpg = container_of(se_tpg,
1361                         struct iscsi_portal_group, tpg_se_tpg);
1362         ssize_t len;
1363
1364         spin_lock(&tpg->tpg_state_lock);
1365         len = sprintf(page, "%d\n",
1366                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1367         spin_unlock(&tpg->tpg_state_lock);
1368
1369         return len;
1370 }
1371
1372 static ssize_t lio_target_tpg_store_enable(
1373         struct se_portal_group *se_tpg,
1374         const char *page,
1375         size_t count)
1376 {
1377         struct iscsi_portal_group *tpg = container_of(se_tpg,
1378                         struct iscsi_portal_group, tpg_se_tpg);
1379         u32 op;
1380         int ret;
1381
1382         ret = kstrtou32(page, 0, &op);
1383         if (ret)
1384                 return ret;
1385         if ((op != 1) && (op != 0)) {
1386                 pr_err("Illegal value for tpg_enable: %u\n", op);
1387                 return -EINVAL;
1388         }
1389
1390         ret = iscsit_get_tpg(tpg);
1391         if (ret < 0)
1392                 return -EINVAL;
1393
1394         if (op) {
1395                 ret = iscsit_tpg_enable_portal_group(tpg);
1396                 if (ret < 0)
1397                         goto out;
1398         } else {
1399                 /*
1400                  * iscsit_tpg_disable_portal_group() assumes force=1
1401                  */
1402                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1403                 if (ret < 0)
1404                         goto out;
1405         }
1406
1407         iscsit_put_tpg(tpg);
1408         return count;
1409 out:
1410         iscsit_put_tpg(tpg);
1411         return -EINVAL;
1412 }
1413
1414 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1415
1416 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1417         &lio_target_tpg_enable.attr,
1418         NULL,
1419 };
1420
1421 /* End items for lio_target_tpg_cit */
1422
1423 /* Start items for lio_target_tiqn_cit */
1424
1425 static struct se_portal_group *lio_target_tiqn_addtpg(
1426         struct se_wwn *wwn,
1427         struct config_group *group,
1428         const char *name)
1429 {
1430         struct iscsi_portal_group *tpg;
1431         struct iscsi_tiqn *tiqn;
1432         char *tpgt_str;
1433         int ret;
1434         u16 tpgt;
1435
1436         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1437         /*
1438          * Only tpgt_# directory groups can be created below
1439          * target/iscsi/iqn.superturodiskarry/
1440          */
1441         tpgt_str = strstr(name, "tpgt_");
1442         if (!tpgt_str) {
1443                 pr_err("Unable to locate \"tpgt_#\" directory"
1444                                 " group\n");
1445                 return NULL;
1446         }
1447         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1448         ret = kstrtou16(tpgt_str, 0, &tpgt);
1449         if (ret)
1450                 return NULL;
1451
1452         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1453         if (!tpg)
1454                 return NULL;
1455
1456         ret = core_tpg_register(
1457                         &lio_target_fabric_configfs->tf_ops,
1458                         wwn, &tpg->tpg_se_tpg, tpg,
1459                         TRANSPORT_TPG_TYPE_NORMAL);
1460         if (ret < 0)
1461                 return NULL;
1462
1463         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1464         if (ret != 0)
1465                 goto out;
1466
1467         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1468         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1469                         name);
1470         return &tpg->tpg_se_tpg;
1471 out:
1472         core_tpg_deregister(&tpg->tpg_se_tpg);
1473         kfree(tpg);
1474         return NULL;
1475 }
1476
1477 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1478 {
1479         struct iscsi_portal_group *tpg;
1480         struct iscsi_tiqn *tiqn;
1481
1482         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1483         tiqn = tpg->tpg_tiqn;
1484         /*
1485          * iscsit_tpg_del_portal_group() assumes force=1
1486          */
1487         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1488         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1489 }
1490
1491 /* End items for lio_target_tiqn_cit */
1492
1493 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1494
1495 static ssize_t lio_target_wwn_show_attr_lio_version(
1496         struct target_fabric_configfs *tf,
1497         char *page)
1498 {
1499         return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1500 }
1501
1502 TF_WWN_ATTR_RO(lio_target, lio_version);
1503
1504 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1505         &lio_target_wwn_lio_version.attr,
1506         NULL,
1507 };
1508
1509 static struct se_wwn *lio_target_call_coreaddtiqn(
1510         struct target_fabric_configfs *tf,
1511         struct config_group *group,
1512         const char *name)
1513 {
1514         struct config_group *stats_cg;
1515         struct iscsi_tiqn *tiqn;
1516
1517         tiqn = iscsit_add_tiqn((unsigned char *)name);
1518         if (IS_ERR(tiqn))
1519                 return ERR_CAST(tiqn);
1520         /*
1521          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1522          */
1523         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1524
1525         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1526                                 GFP_KERNEL);
1527         if (!stats_cg->default_groups) {
1528                 pr_err("Unable to allocate memory for"
1529                                 " stats_cg->default_groups\n");
1530                 iscsit_del_tiqn(tiqn);
1531                 return ERR_PTR(-ENOMEM);
1532         }
1533
1534         stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1535         stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1536         stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1537         stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1538         stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1539         stats_cg->default_groups[5] = NULL;
1540         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1541                         "iscsi_instance", &iscsi_stat_instance_cit);
1542         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1543                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1544         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1545                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1546         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1547                         "iscsi_login_stats", &iscsi_stat_login_cit);
1548         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1549                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1550
1551         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1552         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1553                         " %s\n", name);
1554         return &tiqn->tiqn_wwn;
1555 }
1556
1557 static void lio_target_call_coredeltiqn(
1558         struct se_wwn *wwn)
1559 {
1560         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1561         struct config_item *df_item;
1562         struct config_group *stats_cg;
1563         int i;
1564
1565         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1566         for (i = 0; stats_cg->default_groups[i]; i++) {
1567                 df_item = &stats_cg->default_groups[i]->cg_item;
1568                 stats_cg->default_groups[i] = NULL;
1569                 config_item_put(df_item);
1570         }
1571         kfree(stats_cg->default_groups);
1572
1573         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1574                         tiqn->tiqn);
1575         iscsit_del_tiqn(tiqn);
1576 }
1577
1578 /* End LIO-Target TIQN struct contig_lio_target_cit */
1579
1580 /* Start lio_target_discovery_auth_cit */
1581
1582 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1583         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1584 static ssize_t iscsi_disc_show_##name(                                  \
1585         struct target_fabric_configfs *tf,                              \
1586         char *page)                                                     \
1587 {                                                                       \
1588         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1589                 page);                                                  \
1590 }                                                                       \
1591 static ssize_t iscsi_disc_store_##name(                                 \
1592         struct target_fabric_configfs *tf,                              \
1593         const char *page,                                               \
1594         size_t count)                                                   \
1595 {                                                                       \
1596         return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1597                 page, count);                                           \
1598 }
1599
1600 #define DEF_DISC_AUTH_INT(name)                                         \
1601         __DEF_NACL_AUTH_INT(disc, name)                                 \
1602 static ssize_t iscsi_disc_show_##name(                                  \
1603         struct target_fabric_configfs *tf,                              \
1604         char *page)                                                     \
1605 {                                                                       \
1606         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1607                         page);                                          \
1608 }
1609
1610 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1611 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1612
1613 /*
1614  * One-way authentication userid
1615  */
1616 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1617 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1618 /*
1619  * One-way authentication password
1620  */
1621 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1622 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1623 /*
1624  * Enforce mutual authentication
1625  */
1626 DEF_DISC_AUTH_INT(authenticate_target);
1627 DISC_AUTH_ATTR_RO(authenticate_target);
1628 /*
1629  * Mutual authentication userid
1630  */
1631 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1632 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1633 /*
1634  * Mutual authentication password
1635  */
1636 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1637 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1638
1639 /*
1640  * enforce_discovery_auth
1641  */
1642 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1643         struct target_fabric_configfs *tf,
1644         char *page)
1645 {
1646         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1647
1648         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1649 }
1650
1651 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1652         struct target_fabric_configfs *tf,
1653         const char *page,
1654         size_t count)
1655 {
1656         struct iscsi_param *param;
1657         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1658         u32 op;
1659         int err;
1660
1661         err = kstrtou32(page, 0, &op);
1662         if (err)
1663                 return -EINVAL;
1664         if ((op != 1) && (op != 0)) {
1665                 pr_err("Illegal value for enforce_discovery_auth:"
1666                                 " %u\n", op);
1667                 return -EINVAL;
1668         }
1669
1670         if (!discovery_tpg) {
1671                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1672                 return -EINVAL;
1673         }
1674
1675         param = iscsi_find_param_from_key(AUTHMETHOD,
1676                                 discovery_tpg->param_list);
1677         if (!param)
1678                 return -EINVAL;
1679
1680         if (op) {
1681                 /*
1682                  * Reset the AuthMethod key to CHAP.
1683                  */
1684                 if (iscsi_update_param_value(param, CHAP) < 0)
1685                         return -EINVAL;
1686
1687                 discovery_tpg->tpg_attrib.authentication = 1;
1688                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1689                 pr_debug("LIO-CORE[0] Successfully enabled"
1690                         " authentication enforcement for iSCSI"
1691                         " Discovery TPG\n");
1692         } else {
1693                 /*
1694                  * Reset the AuthMethod key to CHAP,None
1695                  */
1696                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1697                         return -EINVAL;
1698
1699                 discovery_tpg->tpg_attrib.authentication = 0;
1700                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1701                 pr_debug("LIO-CORE[0] Successfully disabled"
1702                         " authentication enforcement for iSCSI"
1703                         " Discovery TPG\n");
1704         }
1705
1706         return count;
1707 }
1708
1709 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1710
1711 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1712         &iscsi_disc_userid.attr,
1713         &iscsi_disc_password.attr,
1714         &iscsi_disc_authenticate_target.attr,
1715         &iscsi_disc_userid_mutual.attr,
1716         &iscsi_disc_password_mutual.attr,
1717         &iscsi_disc_enforce_discovery_auth.attr,
1718         NULL,
1719 };
1720
1721 /* End lio_target_discovery_auth_cit */
1722
1723 /* Start functions for target_core_fabric_ops */
1724
1725 static char *iscsi_get_fabric_name(void)
1726 {
1727         return "iSCSI";
1728 }
1729
1730 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1731 {
1732         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1733
1734         /* only used for printks or comparism with ->ref_task_tag */
1735         return (__force u32)cmd->init_task_tag;
1736 }
1737
1738 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1739 {
1740         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1741
1742         return cmd->i_state;
1743 }
1744
1745 static u32 lio_sess_get_index(struct se_session *se_sess)
1746 {
1747         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1748
1749         return sess->session_index;
1750 }
1751
1752 static u32 lio_sess_get_initiator_sid(
1753         struct se_session *se_sess,
1754         unsigned char *buf,
1755         u32 size)
1756 {
1757         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1758         /*
1759          * iSCSI Initiator Session Identifier from RFC-3720.
1760          */
1761         return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1762                 sess->isid[0], sess->isid[1], sess->isid[2],
1763                 sess->isid[3], sess->isid[4], sess->isid[5]);
1764 }
1765
1766 static int lio_queue_data_in(struct se_cmd *se_cmd)
1767 {
1768         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1769
1770         cmd->i_state = ISTATE_SEND_DATAIN;
1771         cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1772
1773         return 0;
1774 }
1775
1776 static int lio_write_pending(struct se_cmd *se_cmd)
1777 {
1778         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1779         struct iscsi_conn *conn = cmd->conn;
1780
1781         if (!cmd->immediate_data && !cmd->unsolicited_data)
1782                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1783
1784         return 0;
1785 }
1786
1787 static int lio_write_pending_status(struct se_cmd *se_cmd)
1788 {
1789         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1790         int ret;
1791
1792         spin_lock_bh(&cmd->istate_lock);
1793         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1794         spin_unlock_bh(&cmd->istate_lock);
1795
1796         return ret;
1797 }
1798
1799 static int lio_queue_status(struct se_cmd *se_cmd)
1800 {
1801         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1802
1803         cmd->i_state = ISTATE_SEND_STATUS;
1804
1805         if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1806                 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1807                 return 0;
1808         }
1809         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1810
1811         return 0;
1812 }
1813
1814 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1815 {
1816         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1817
1818         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1819         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1820 }
1821
1822 static void lio_aborted_task(struct se_cmd *se_cmd)
1823 {
1824         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1825
1826         cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1827 }
1828
1829 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1830 {
1831         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1832
1833         return &tpg->tpg_tiqn->tiqn[0];
1834 }
1835
1836 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1837 {
1838         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1839
1840         return tpg->tpgt;
1841 }
1842
1843 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1844 {
1845         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1846
1847         return tpg->tpg_attrib.default_cmdsn_depth;
1848 }
1849
1850 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1851 {
1852         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1853
1854         return tpg->tpg_attrib.generate_node_acls;
1855 }
1856
1857 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1858 {
1859         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1860
1861         return tpg->tpg_attrib.cache_dynamic_acls;
1862 }
1863
1864 static int lio_tpg_check_demo_mode_write_protect(
1865         struct se_portal_group *se_tpg)
1866 {
1867         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1868
1869         return tpg->tpg_attrib.demo_mode_write_protect;
1870 }
1871
1872 static int lio_tpg_check_prod_mode_write_protect(
1873         struct se_portal_group *se_tpg)
1874 {
1875         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1876
1877         return tpg->tpg_attrib.prod_mode_write_protect;
1878 }
1879
1880 static void lio_tpg_release_fabric_acl(
1881         struct se_portal_group *se_tpg,
1882         struct se_node_acl *se_acl)
1883 {
1884         struct iscsi_node_acl *acl = container_of(se_acl,
1885                                 struct iscsi_node_acl, se_node_acl);
1886         kfree(acl);
1887 }
1888
1889 /*
1890  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1891  *
1892  * Also, this function calls iscsit_inc_session_usage_count() on the
1893  * struct iscsi_session in question.
1894  */
1895 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1896 {
1897         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1898
1899         spin_lock(&sess->conn_lock);
1900         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1901             atomic_read(&sess->session_logout) ||
1902             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1903                 spin_unlock(&sess->conn_lock);
1904                 return 0;
1905         }
1906         atomic_set(&sess->session_reinstatement, 1);
1907         spin_unlock(&sess->conn_lock);
1908
1909         iscsit_stop_time2retain_timer(sess);
1910         iscsit_stop_session(sess, 1, 1);
1911
1912         return 1;
1913 }
1914
1915 /*
1916  * Calls iscsit_dec_session_usage_count() as inverse of
1917  * lio_tpg_shutdown_session()
1918  */
1919 static void lio_tpg_close_session(struct se_session *se_sess)
1920 {
1921         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1922         /*
1923          * If the iSCSI Session for the iSCSI Initiator Node exists,
1924          * forcefully shutdown the iSCSI NEXUS.
1925          */
1926         iscsit_close_session(sess);
1927 }
1928
1929 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1930 {
1931         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1932
1933         return tpg->tpg_tiqn->tiqn_index;
1934 }
1935
1936 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1937 {
1938         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1939                                 se_node_acl);
1940         struct se_portal_group *se_tpg = se_acl->se_tpg;
1941         struct iscsi_portal_group *tpg = container_of(se_tpg,
1942                                 struct iscsi_portal_group, tpg_se_tpg);
1943
1944         acl->node_attrib.nacl = acl;
1945         iscsit_set_default_node_attribues(acl, tpg);
1946 }
1947
1948 static int lio_check_stop_free(struct se_cmd *se_cmd)
1949 {
1950         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1951 }
1952
1953 static void lio_release_cmd(struct se_cmd *se_cmd)
1954 {
1955         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1956
1957         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1958         iscsit_release_cmd(cmd);
1959 }
1960
1961 /* End functions for target_core_fabric_ops */
1962
1963 int iscsi_target_register_configfs(void)
1964 {
1965         struct target_fabric_configfs *fabric;
1966         int ret;
1967
1968         lio_target_fabric_configfs = NULL;
1969         fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1970         if (IS_ERR(fabric)) {
1971                 pr_err("target_fabric_configfs_init() for"
1972                                 " LIO-Target failed!\n");
1973                 return PTR_ERR(fabric);
1974         }
1975         /*
1976          * Setup the fabric API of function pointers used by target_core_mod..
1977          */
1978         fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1979         fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1980         fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1981         fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1982         fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1983         fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1984         fabric->tf_ops.tpg_get_pr_transport_id_len =
1985                                 &iscsi_get_pr_transport_id_len;
1986         fabric->tf_ops.tpg_parse_pr_out_transport_id =
1987                                 &iscsi_parse_pr_out_transport_id;
1988         fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1989         fabric->tf_ops.tpg_check_demo_mode_cache =
1990                                 &lio_tpg_check_demo_mode_cache;
1991         fabric->tf_ops.tpg_check_demo_mode_write_protect =
1992                                 &lio_tpg_check_demo_mode_write_protect;
1993         fabric->tf_ops.tpg_check_prod_mode_write_protect =
1994                                 &lio_tpg_check_prod_mode_write_protect;
1995         fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1996         fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1997         fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
1998         fabric->tf_ops.check_stop_free = &lio_check_stop_free,
1999         fabric->tf_ops.release_cmd = &lio_release_cmd;
2000         fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
2001         fabric->tf_ops.close_session = &lio_tpg_close_session;
2002         fabric->tf_ops.sess_get_index = &lio_sess_get_index;
2003         fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
2004         fabric->tf_ops.write_pending = &lio_write_pending;
2005         fabric->tf_ops.write_pending_status = &lio_write_pending_status;
2006         fabric->tf_ops.set_default_node_attributes =
2007                                 &lio_set_default_node_attributes;
2008         fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
2009         fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
2010         fabric->tf_ops.queue_data_in = &lio_queue_data_in;
2011         fabric->tf_ops.queue_status = &lio_queue_status;
2012         fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
2013         fabric->tf_ops.aborted_task = &lio_aborted_task;
2014         /*
2015          * Setup function pointers for generic logic in target_core_fabric_configfs.c
2016          */
2017         fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
2018         fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
2019         fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
2020         fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
2021         fabric->tf_ops.fabric_post_link = NULL;
2022         fabric->tf_ops.fabric_pre_unlink = NULL;
2023         fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
2024         fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
2025         fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
2026         fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
2027         /*
2028          * Setup default attribute lists for various fabric->tf_cit_tmpl
2029          * sturct config_item_type's
2030          */
2031         fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
2032         fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
2033         fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
2034         fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
2035         fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
2036         fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
2037         fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
2038         fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
2039         fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
2040         fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
2041         fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
2042
2043         ret = target_fabric_configfs_register(fabric);
2044         if (ret < 0) {
2045                 pr_err("target_fabric_configfs_register() for"
2046                                 " LIO-Target failed!\n");
2047                 target_fabric_configfs_free(fabric);
2048                 return ret;
2049         }
2050
2051         lio_target_fabric_configfs = fabric;
2052         pr_debug("LIO_TARGET[0] - Set fabric ->"
2053                         " lio_target_fabric_configfs\n");
2054         return 0;
2055 }
2056
2057
2058 void iscsi_target_deregister_configfs(void)
2059 {
2060         if (!lio_target_fabric_configfs)
2061                 return;
2062         /*
2063          * Shutdown discovery sessions and disable discovery TPG
2064          */
2065         if (iscsit_global->discovery_tpg)
2066                 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
2067
2068         target_fabric_configfs_deregister(lio_target_fabric_configfs);
2069         lio_target_fabric_configfs = NULL;
2070         pr_debug("LIO_TARGET[0] - Cleared"
2071                                 " lio_target_fabric_configfs\n");
2072 }