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                 if (sess->sess_ops->InitiatorName)
 673                         rb += sprintf(page+rb, "InitiatorName: %s\n",
 674                                 sess->sess_ops->InitiatorName);
 675                 if (sess->sess_ops->InitiatorAlias)
 676                         rb += sprintf(page+rb, "InitiatorAlias: %s\n",
 677                                 sess->sess_ops->InitiatorAlias);
 678
 679                 rb += sprintf(page+rb, "LIO Session ID: %u   "
 680                         "ISID: 0x%02x %02x %02x %02x %02x %02x  "
 681                         "TSIH: %hu  ", sess->sid,
 682                         sess->isid[0], sess->isid[1], sess->isid[2],
 683                         sess->isid[3], sess->isid[4], sess->isid[5],
 684                         sess->tsih);
 685                 rb += sprintf(page+rb, "SessionType: %s\n",
 686                                 (sess->sess_ops->SessionType) ?
 687                                 "Discovery" : "Normal");
 688                 rb += sprintf(page+rb, "Session State: ");
 689                 switch (sess->session_state) {
 690                 case TARG_SESS_STATE_FREE:
 691                         rb += sprintf(page+rb, "TARG_SESS_FREE\n");
 692                         break;
 693                 case TARG_SESS_STATE_ACTIVE:
 694                         rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
 695                         break;
 696                 case TARG_SESS_STATE_LOGGED_IN:
 697                         rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
 698                         break;
 699                 case TARG_SESS_STATE_FAILED:
 700                         rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
 701                         break;
 702                 case TARG_SESS_STATE_IN_CONTINUE:
 703                         rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
 704                         break;
 705                 default:
 706                         rb += sprintf(page+rb, "ERROR: Unknown Session"
 707                                         " State!\n");
 708                         break;
 709                 }
 710
 711                 rb += sprintf(page+rb, "---------------------[iSCSI Session"
 712                                 " Values]-----------------------\n");
 713                 rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
 714                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
 715                 rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
 716                                 "   0x%08x   0x%08x\n",
 717                         sess->cmdsn_window,
 718                         (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
 719                         sess->exp_cmd_sn, sess->max_cmd_sn,
 720                         sess->init_task_tag, sess->targ_xfer_tag);
 721                 rb += sprintf(page+rb, "----------------------[iSCSI"
 722                                 " Connections]-------------------------\n");
 723
 724                 spin_lock(&sess->conn_lock);
 725                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
 726                         rb += sprintf(page+rb, "CID: %hu  Connection"
 727                                         " State: ", conn->cid);
 728                         switch (conn->conn_state) {
 729                         case TARG_CONN_STATE_FREE:
 730                                 rb += sprintf(page+rb,
 731                                         "TARG_CONN_STATE_FREE\n");
 732                                 break;
 733                         case TARG_CONN_STATE_XPT_UP:
 734                                 rb += sprintf(page+rb,
 735                                         "TARG_CONN_STATE_XPT_UP\n");
 736                                 break;
 737                         case TARG_CONN_STATE_IN_LOGIN:
 738                                 rb += sprintf(page+rb,
 739                                         "TARG_CONN_STATE_IN_LOGIN\n");
 740                                 break;
 741                         case TARG_CONN_STATE_LOGGED_IN:
 742                                 rb += sprintf(page+rb,
 743                                         "TARG_CONN_STATE_LOGGED_IN\n");
 744                                 break;
 745                         case TARG_CONN_STATE_IN_LOGOUT:
 746                                 rb += sprintf(page+rb,
 747                                         "TARG_CONN_STATE_IN_LOGOUT\n");
 748                                 break;
 749                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
 750                                 rb += sprintf(page+rb,
 751                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
 752                                 break;
 753                         case TARG_CONN_STATE_CLEANUP_WAIT:
 754                                 rb += sprintf(page+rb,
 755                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
 756                                 break;
 757                         default:
 758                                 rb += sprintf(page+rb,
 759                                         "ERROR: Unknown Connection State!\n");
 760                                 break;
 761                         }
 762
 763                         rb += sprintf(page+rb, "   Address %s %s", conn->login_ip,
 764                                 (conn->network_transport == ISCSI_TCP) ?
 765                                 "TCP" : "SCTP");
 766                         rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
 767                                 conn->stat_sn);
 768                 }
 769                 spin_unlock(&sess->conn_lock);
 770         }
 771         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 772
 773         return rb;
 774 }
 775
 776 TF_NACL_BASE_ATTR_RO(lio_target, info);
 777
 778 static ssize_t lio_target_nacl_show_cmdsn_depth(
 779         struct se_node_acl *se_nacl,
 780         char *page)
 781 {
 782         return sprintf(page, "%u\n", se_nacl->queue_depth);
 783 }
 784
 785 static ssize_t lio_target_nacl_store_cmdsn_depth(
 786         struct se_node_acl *se_nacl,
 787         const char *page,
 788         size_t count)
 789 {
 790         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 791         struct iscsi_portal_group *tpg = container_of(se_tpg,
 792                         struct iscsi_portal_group, tpg_se_tpg);
 793         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
 794         u32 cmdsn_depth = 0;
 795         int ret;
 796
 797         ret = kstrtou32(page, 0, &cmdsn_depth);
 798         if (ret)
 799                 return ret;
 800         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 801                 pr_err("Passed cmdsn_depth: %u exceeds"
 802                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
 803                         TA_DEFAULT_CMDSN_DEPTH_MAX);
 804                 return -EINVAL;
 805         }
 806         acl_ci = &se_nacl->acl_group.cg_item;
 807         if (!acl_ci) {
 808                 pr_err("Unable to locatel acl_ci\n");
 809                 return -EINVAL;
 810         }
 811         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
 812         if (!tpg_ci) {
 813                 pr_err("Unable to locate tpg_ci\n");
 814                 return -EINVAL;
 815         }
 816         wwn_ci = &tpg_ci->ci_group->cg_item;
 817         if (!wwn_ci) {
 818                 pr_err("Unable to locate config_item wwn_ci\n");
 819                 return -EINVAL;
 820         }
 821
 822         if (iscsit_get_tpg(tpg) < 0)
 823                 return -EINVAL;
 824         /*
 825          * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
 826          */
 827         ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
 828                                 config_item_name(acl_ci), cmdsn_depth, 1);
 829
 830         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
 831                 "InitiatorName: %s\n", config_item_name(wwn_ci),
 832                 config_item_name(tpg_ci), cmdsn_depth,
 833                 config_item_name(acl_ci));
 834
 835         iscsit_put_tpg(tpg);
 836         return (!ret) ? count : (ssize_t)ret;
 837 }
 838
 839 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
 840
 841 static ssize_t lio_target_nacl_show_tag(
 842         struct se_node_acl *se_nacl,
 843         char *page)
 844 {
 845         return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
 846 }
 847
 848 static ssize_t lio_target_nacl_store_tag(
 849         struct se_node_acl *se_nacl,
 850         const char *page,
 851         size_t count)
 852 {
 853         int ret;
 854
 855         ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
 856
 857         if (ret < 0)
 858                 return ret;
 859         return count;
 860 }
 861
 862 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
 863
 864 static struct configfs_attribute *lio_target_initiator_attrs[] = {
 865         &lio_target_nacl_info.attr,
 866         &lio_target_nacl_cmdsn_depth.attr,
 867         &lio_target_nacl_tag.attr,
 868         NULL,
 869 };
 870
 871 static struct se_node_acl *lio_tpg_alloc_fabric_acl(
 872         struct se_portal_group *se_tpg)
 873 {
 874         struct iscsi_node_acl *acl;
 875
 876         acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
 877         if (!acl) {
 878                 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
 879                 return NULL;
 880         }
 881
 882         return &acl->se_node_acl;
 883 }
 884
 885 static struct se_node_acl *lio_target_make_nodeacl(
 886         struct se_portal_group *se_tpg,
 887         struct config_group *group,
 888         const char *name)
 889 {
 890         struct config_group *stats_cg;
 891         struct iscsi_node_acl *acl;
 892         struct se_node_acl *se_nacl_new, *se_nacl;
 893         struct iscsi_portal_group *tpg = container_of(se_tpg,
 894                         struct iscsi_portal_group, tpg_se_tpg);
 895         u32 cmdsn_depth;
 896
 897         se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
 898         if (!se_nacl_new)
 899                 return ERR_PTR(-ENOMEM);
 900
 901         cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth;
 902         /*
 903          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 904          * when converting a NdoeACL from demo mode -> explict
 905          */
 906         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 907                                 name, cmdsn_depth);
 908         if (IS_ERR(se_nacl))
 909                 return se_nacl;
 910
 911         acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
 912         stats_cg = &se_nacl->acl_fabric_stat_group;
 913
 914         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 915                                 GFP_KERNEL);
 916         if (!stats_cg->default_groups) {
 917                 pr_err("Unable to allocate memory for"
 918                                 " stats_cg->default_groups\n");
 919                 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 920                 kfree(acl);
 921                 return ERR_PTR(-ENOMEM);
 922         }
 923
 924         stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
 925         stats_cg->default_groups[1] = NULL;
 926         config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
 927                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 928
 929         return se_nacl;
 930 }
 931
 932 static void lio_target_drop_nodeacl(
 933         struct se_node_acl *se_nacl)
 934 {
 935         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 936         struct iscsi_node_acl *acl = container_of(se_nacl,
 937                         struct iscsi_node_acl, se_node_acl);
 938         struct config_item *df_item;
 939         struct config_group *stats_cg;
 940         int i;
 941
 942         stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
 943         for (i = 0; stats_cg->default_groups[i]; i++) {
 944                 df_item = &stats_cg->default_groups[i]->cg_item;
 945                 stats_cg->default_groups[i] = NULL;
 946                 config_item_put(df_item);
 947         }
 948         kfree(stats_cg->default_groups);
 949
 950         core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 951         kfree(acl);
 952 }
 953
 954 /* End items for lio_target_acl_cit */
 955
 956 /* Start items for lio_target_tpg_attrib_cit */
 957
 958 #define DEF_TPG_ATTRIB(name)                                            \
 959                                                                         \
 960 static ssize_t iscsi_tpg_attrib_show_##name(                            \
 961         struct se_portal_group *se_tpg,                         \
 962         char *page)                                                     \
 963 {                                                                       \
 964         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 965                         struct iscsi_portal_group, tpg_se_tpg); \
 966         ssize_t rb;                                                     \
 967                                                                         \
 968         if (iscsit_get_tpg(tpg) < 0)                                    \
 969                 return -EINVAL;                                         \
 970                                                                         \
 971         rb = sprintf(page, "%u\n", tpg->tpg_attrib.name);               \
 972         iscsit_put_tpg(tpg);                                            \
 973         return rb;                                                      \
 974 }                                                                       \
 975                                                                         \
 976 static ssize_t iscsi_tpg_attrib_store_##name(                           \
 977         struct se_portal_group *se_tpg,                         \
 978         const char *page,                                               \
 979         size_t count)                                                   \
 980 {                                                                       \
 981         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 982                         struct iscsi_portal_group, tpg_se_tpg); \
 983         u32 val;                                                        \
 984         int ret;                                                        \
 985                                                                         \
 986         if (iscsit_get_tpg(tpg) < 0)                                    \
 987                 return -EINVAL;                                         \
 988                                                                         \
 989         ret = kstrtou32(page, 0, &val);                                 \
 990         if (ret)                                                        \
 991                 goto out;                                               \
 992         ret = iscsit_ta_##name(tpg, val);                               \
 993         if (ret < 0)                                                    \
 994                 goto out;                                               \
 995                                                                         \
 996         iscsit_put_tpg(tpg);                                            \
 997         return count;                                                   \
 998 out:                                                                    \
 999         iscsit_put_tpg(tpg);                                            \
1000         return ret;                                                     \
1001 }
1002
1003 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
1004
1005 /*
1006  * Define iscsi_tpg_attrib_s_authentication
1007  */
1008 DEF_TPG_ATTRIB(authentication);
1009 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1010 /*
1011  * Define iscsi_tpg_attrib_s_login_timeout
1012  */
1013 DEF_TPG_ATTRIB(login_timeout);
1014 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1015 /*
1016  * Define iscsi_tpg_attrib_s_netif_timeout
1017  */
1018 DEF_TPG_ATTRIB(netif_timeout);
1019 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1020 /*
1021  * Define iscsi_tpg_attrib_s_generate_node_acls
1022  */
1023 DEF_TPG_ATTRIB(generate_node_acls);
1024 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1025 /*
1026  * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1027  */
1028 DEF_TPG_ATTRIB(default_cmdsn_depth);
1029 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1030 /*
1031  Define iscsi_tpg_attrib_s_cache_dynamic_acls
1032  */
1033 DEF_TPG_ATTRIB(cache_dynamic_acls);
1034 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1035 /*
1036  * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1037  */
1038 DEF_TPG_ATTRIB(demo_mode_write_protect);
1039 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1040 /*
1041  * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1042  */
1043 DEF_TPG_ATTRIB(prod_mode_write_protect);
1044 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1045 /*
1046  * Define iscsi_tpg_attrib_s_demo_mode_discovery,
1047  */
1048 DEF_TPG_ATTRIB(demo_mode_discovery);
1049 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
1050 /*
1051  * Define iscsi_tpg_attrib_s_default_erl
1052  */
1053 DEF_TPG_ATTRIB(default_erl);
1054 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
1055 /*
1056  * Define iscsi_tpg_attrib_s_t10_pi
1057  */
1058 DEF_TPG_ATTRIB(t10_pi);
1059 TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR);
1060
1061 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1062         &iscsi_tpg_attrib_authentication.attr,
1063         &iscsi_tpg_attrib_login_timeout.attr,
1064         &iscsi_tpg_attrib_netif_timeout.attr,
1065         &iscsi_tpg_attrib_generate_node_acls.attr,
1066         &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1067         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1068         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1069         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1070         &iscsi_tpg_attrib_demo_mode_discovery.attr,
1071         &iscsi_tpg_attrib_default_erl.attr,
1072         &iscsi_tpg_attrib_t10_pi.attr,
1073         NULL,
1074 };
1075
1076 /* End items for lio_target_tpg_attrib_cit */
1077
1078 /* Start items for lio_target_tpg_auth_cit */
1079
1080 #define __DEF_TPG_AUTH_STR(prefix, name, flags)                                 \
1081 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1082         struct se_portal_group *se_tpg,                                         \
1083         char *page)                                                             \
1084 {                                                                               \
1085         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1086                                 struct iscsi_portal_group, tpg_se_tpg);         \
1087         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1088                                                                                 \
1089         if (!capable(CAP_SYS_ADMIN))                                            \
1090                 return -EPERM;                                                  \
1091                                                                                 \
1092         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);                   \
1093 }                                                                               \
1094                                                                                 \
1095 static ssize_t __iscsi_##prefix##_store_##name(                                 \
1096         struct se_portal_group *se_tpg,                                         \
1097         const char *page,                                                       \
1098         size_t count)                                                           \
1099 {                                                                               \
1100         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1101                                 struct iscsi_portal_group, tpg_se_tpg);         \
1102         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1103                                                                                 \
1104         if (!capable(CAP_SYS_ADMIN))                                            \
1105                 return -EPERM;                                                  \
1106                                                                                 \
1107         snprintf(auth->name, sizeof(auth->name), "%s", page);                   \
1108         if (!(strncmp("NULL", auth->name, 4)))                                  \
1109                 auth->naf_flags &= ~flags;                                      \
1110         else                                                                    \
1111                 auth->naf_flags |= flags;                                       \
1112                                                                                 \
1113         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                            \
1114             (auth->naf_flags & NAF_PASSWORD_IN_SET))                            \
1115                 auth->authenticate_target = 1;                                  \
1116         else                                                                    \
1117                 auth->authenticate_target = 0;                                  \
1118                                                                                 \
1119         return count;                                                           \
1120 }
1121
1122 #define __DEF_TPG_AUTH_INT(prefix, name)                                        \
1123 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1124         struct se_portal_group *se_tpg,                                         \
1125         char *page)                                                             \
1126 {                                                                               \
1127         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1128                                 struct iscsi_portal_group, tpg_se_tpg);         \
1129         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1130                                                                                 \
1131         if (!capable(CAP_SYS_ADMIN))                                            \
1132                 return -EPERM;                                                  \
1133                                                                                 \
1134         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);                   \
1135 }
1136
1137 #define DEF_TPG_AUTH_STR(name, flags)                                           \
1138         __DEF_TPG_AUTH_STR(tpg_auth, name, flags)                               \
1139 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1140         struct se_portal_group *se_tpg,                                         \
1141         char *page)                                                             \
1142 {                                                                               \
1143         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1144 }                                                                               \
1145                                                                                 \
1146 static ssize_t iscsi_tpg_auth_store_##name(                                     \
1147         struct se_portal_group *se_tpg,                                         \
1148         const char *page,                                                       \
1149         size_t count)                                                           \
1150 {                                                                               \
1151         return __iscsi_tpg_auth_store_##name(se_tpg, page, count);              \
1152 }
1153
1154 #define DEF_TPG_AUTH_INT(name)                                                  \
1155         __DEF_TPG_AUTH_INT(tpg_auth, name)                                      \
1156 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1157         struct se_portal_group *se_tpg,                                         \
1158         char *page)                                                             \
1159 {                                                                               \
1160         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1161 }
1162
1163 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1164 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1165
1166 /*
1167  *  * One-way authentication userid
1168  *   */
1169 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1170 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1171 /*
1172  *  * One-way authentication password
1173  *   */
1174 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1175 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1176 /*
1177  *  * Enforce mutual authentication
1178  *   */
1179 DEF_TPG_AUTH_INT(authenticate_target);
1180 TPG_AUTH_ATTR_RO(authenticate_target);
1181 /*
1182  *  * Mutual authentication userid
1183  *   */
1184 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1185 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1186 /*
1187  *  * Mutual authentication password
1188  *   */
1189 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1190 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1191
1192 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1193         &iscsi_tpg_auth_userid.attr,
1194         &iscsi_tpg_auth_password.attr,
1195         &iscsi_tpg_auth_authenticate_target.attr,
1196         &iscsi_tpg_auth_userid_mutual.attr,
1197         &iscsi_tpg_auth_password_mutual.attr,
1198         NULL,
1199 };
1200
1201 /* End items for lio_target_tpg_auth_cit */
1202
1203 /* Start items for lio_target_tpg_param_cit */
1204
1205 #define DEF_TPG_PARAM(name)                                             \
1206 static ssize_t iscsi_tpg_param_show_##name(                             \
1207         struct se_portal_group *se_tpg,                                 \
1208         char *page)                                                     \
1209 {                                                                       \
1210         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1211                         struct iscsi_portal_group, tpg_se_tpg);         \
1212         struct iscsi_param *param;                                      \
1213         ssize_t rb;                                                     \
1214                                                                         \
1215         if (iscsit_get_tpg(tpg) < 0)                                    \
1216                 return -EINVAL;                                         \
1217                                                                         \
1218         param = iscsi_find_param_from_key(__stringify(name),            \
1219                                 tpg->param_list);                       \
1220         if (!param) {                                                   \
1221                 iscsit_put_tpg(tpg);                                    \
1222                 return -EINVAL;                                         \
1223         }                                                               \
1224         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
1225                                                                         \
1226         iscsit_put_tpg(tpg);                                            \
1227         return rb;                                                      \
1228 }                                                                       \
1229 static ssize_t iscsi_tpg_param_store_##name(                            \
1230         struct se_portal_group *se_tpg,                         \
1231         const char *page,                                               \
1232         size_t count)                                                   \
1233 {                                                                       \
1234         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1235                         struct iscsi_portal_group, tpg_se_tpg);         \
1236         char *buf;                                                      \
1237         int ret, len;                                                   \
1238                                                                         \
1239         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1240         if (!buf)                                                       \
1241                 return -ENOMEM;                                         \
1242         len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);       \
1243         if (isspace(buf[len-1]))                                        \
1244                 buf[len-1] = '\0'; /* Kill newline */                   \
1245                                                                         \
1246         if (iscsit_get_tpg(tpg) < 0) {                                  \
1247                 kfree(buf);                                             \
1248                 return -EINVAL;                                         \
1249         }                                                               \
1250                                                                         \
1251         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1252         if (ret < 0)                                                    \
1253                 goto out;                                               \
1254                                                                         \
1255         kfree(buf);                                                     \
1256         iscsit_put_tpg(tpg);                                            \
1257         return count;                                                   \
1258 out:                                                                    \
1259         kfree(buf);                                                     \
1260         iscsit_put_tpg(tpg);                                            \
1261         return -EINVAL;                                         \
1262 }
1263
1264 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1265
1266 DEF_TPG_PARAM(AuthMethod);
1267 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1268
1269 DEF_TPG_PARAM(HeaderDigest);
1270 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1271
1272 DEF_TPG_PARAM(DataDigest);
1273 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1274
1275 DEF_TPG_PARAM(MaxConnections);
1276 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1277
1278 DEF_TPG_PARAM(TargetAlias);
1279 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1280
1281 DEF_TPG_PARAM(InitialR2T);
1282 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1283
1284 DEF_TPG_PARAM(ImmediateData);
1285 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1286
1287 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1288 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1289
1290 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1291 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1292
1293 DEF_TPG_PARAM(MaxBurstLength);
1294 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1295
1296 DEF_TPG_PARAM(FirstBurstLength);
1297 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1298
1299 DEF_TPG_PARAM(DefaultTime2Wait);
1300 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1301
1302 DEF_TPG_PARAM(DefaultTime2Retain);
1303 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1304
1305 DEF_TPG_PARAM(MaxOutstandingR2T);
1306 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1307
1308 DEF_TPG_PARAM(DataPDUInOrder);
1309 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1310
1311 DEF_TPG_PARAM(DataSequenceInOrder);
1312 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1313
1314 DEF_TPG_PARAM(ErrorRecoveryLevel);
1315 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1316
1317 DEF_TPG_PARAM(IFMarker);
1318 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1319
1320 DEF_TPG_PARAM(OFMarker);
1321 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1322
1323 DEF_TPG_PARAM(IFMarkInt);
1324 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1325
1326 DEF_TPG_PARAM(OFMarkInt);
1327 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1328
1329 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1330         &iscsi_tpg_param_AuthMethod.attr,
1331         &iscsi_tpg_param_HeaderDigest.attr,
1332         &iscsi_tpg_param_DataDigest.attr,
1333         &iscsi_tpg_param_MaxConnections.attr,
1334         &iscsi_tpg_param_TargetAlias.attr,
1335         &iscsi_tpg_param_InitialR2T.attr,
1336         &iscsi_tpg_param_ImmediateData.attr,
1337         &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1338         &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1339         &iscsi_tpg_param_MaxBurstLength.attr,
1340         &iscsi_tpg_param_FirstBurstLength.attr,
1341         &iscsi_tpg_param_DefaultTime2Wait.attr,
1342         &iscsi_tpg_param_DefaultTime2Retain.attr,
1343         &iscsi_tpg_param_MaxOutstandingR2T.attr,
1344         &iscsi_tpg_param_DataPDUInOrder.attr,
1345         &iscsi_tpg_param_DataSequenceInOrder.attr,
1346         &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1347         &iscsi_tpg_param_IFMarker.attr,
1348         &iscsi_tpg_param_OFMarker.attr,
1349         &iscsi_tpg_param_IFMarkInt.attr,
1350         &iscsi_tpg_param_OFMarkInt.attr,
1351         NULL,
1352 };
1353
1354 /* End items for lio_target_tpg_param_cit */
1355
1356 /* Start items for lio_target_tpg_cit */
1357
1358 static ssize_t lio_target_tpg_show_enable(
1359         struct se_portal_group *se_tpg,
1360         char *page)
1361 {
1362         struct iscsi_portal_group *tpg = container_of(se_tpg,
1363                         struct iscsi_portal_group, tpg_se_tpg);
1364         ssize_t len;
1365
1366         spin_lock(&tpg->tpg_state_lock);
1367         len = sprintf(page, "%d\n",
1368                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1369         spin_unlock(&tpg->tpg_state_lock);
1370
1371         return len;
1372 }
1373
1374 static ssize_t lio_target_tpg_store_enable(
1375         struct se_portal_group *se_tpg,
1376         const char *page,
1377         size_t count)
1378 {
1379         struct iscsi_portal_group *tpg = container_of(se_tpg,
1380                         struct iscsi_portal_group, tpg_se_tpg);
1381         u32 op;
1382         int ret;
1383
1384         ret = kstrtou32(page, 0, &op);
1385         if (ret)
1386                 return ret;
1387         if ((op != 1) && (op != 0)) {
1388                 pr_err("Illegal value for tpg_enable: %u\n", op);
1389                 return -EINVAL;
1390         }
1391
1392         ret = iscsit_get_tpg(tpg);
1393         if (ret < 0)
1394                 return -EINVAL;
1395
1396         if (op) {
1397                 ret = iscsit_tpg_enable_portal_group(tpg);
1398                 if (ret < 0)
1399                         goto out;
1400         } else {
1401                 /*
1402                  * iscsit_tpg_disable_portal_group() assumes force=1
1403                  */
1404                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1405                 if (ret < 0)
1406                         goto out;
1407         }
1408
1409         iscsit_put_tpg(tpg);
1410         return count;
1411 out:
1412         iscsit_put_tpg(tpg);
1413         return -EINVAL;
1414 }
1415
1416 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1417
1418 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1419         &lio_target_tpg_enable.attr,
1420         NULL,
1421 };
1422
1423 /* End items for lio_target_tpg_cit */
1424
1425 /* Start items for lio_target_tiqn_cit */
1426
1427 static struct se_portal_group *lio_target_tiqn_addtpg(
1428         struct se_wwn *wwn,
1429         struct config_group *group,
1430         const char *name)
1431 {
1432         struct iscsi_portal_group *tpg;
1433         struct iscsi_tiqn *tiqn;
1434         char *tpgt_str;
1435         int ret;
1436         u16 tpgt;
1437
1438         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1439         /*
1440          * Only tpgt_# directory groups can be created below
1441          * target/iscsi/iqn.superturodiskarry/
1442          */
1443         tpgt_str = strstr(name, "tpgt_");
1444         if (!tpgt_str) {
1445                 pr_err("Unable to locate \"tpgt_#\" directory"
1446                                 " group\n");
1447                 return NULL;
1448         }
1449         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1450         ret = kstrtou16(tpgt_str, 0, &tpgt);
1451         if (ret)
1452                 return NULL;
1453
1454         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1455         if (!tpg)
1456                 return NULL;
1457
1458         ret = core_tpg_register(
1459                         &lio_target_fabric_configfs->tf_ops,
1460                         wwn, &tpg->tpg_se_tpg, tpg,
1461                         TRANSPORT_TPG_TYPE_NORMAL);
1462         if (ret < 0)
1463                 return NULL;
1464
1465         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1466         if (ret != 0)
1467                 goto out;
1468
1469         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1470         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1471                         name);
1472         return &tpg->tpg_se_tpg;
1473 out:
1474         core_tpg_deregister(&tpg->tpg_se_tpg);
1475         kfree(tpg);
1476         return NULL;
1477 }
1478
1479 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1480 {
1481         struct iscsi_portal_group *tpg;
1482         struct iscsi_tiqn *tiqn;
1483
1484         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1485         tiqn = tpg->tpg_tiqn;
1486         /*
1487          * iscsit_tpg_del_portal_group() assumes force=1
1488          */
1489         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1490         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1491 }
1492
1493 /* End items for lio_target_tiqn_cit */
1494
1495 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1496
1497 static ssize_t lio_target_wwn_show_attr_lio_version(
1498         struct target_fabric_configfs *tf,
1499         char *page)
1500 {
1501         return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1502 }
1503
1504 TF_WWN_ATTR_RO(lio_target, lio_version);
1505
1506 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1507         &lio_target_wwn_lio_version.attr,
1508         NULL,
1509 };
1510
1511 static struct se_wwn *lio_target_call_coreaddtiqn(
1512         struct target_fabric_configfs *tf,
1513         struct config_group *group,
1514         const char *name)
1515 {
1516         struct config_group *stats_cg;
1517         struct iscsi_tiqn *tiqn;
1518
1519         tiqn = iscsit_add_tiqn((unsigned char *)name);
1520         if (IS_ERR(tiqn))
1521                 return ERR_CAST(tiqn);
1522         /*
1523          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1524          */
1525         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1526
1527         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1528                                 GFP_KERNEL);
1529         if (!stats_cg->default_groups) {
1530                 pr_err("Unable to allocate memory for"
1531                                 " stats_cg->default_groups\n");
1532                 iscsit_del_tiqn(tiqn);
1533                 return ERR_PTR(-ENOMEM);
1534         }
1535
1536         stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1537         stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1538         stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1539         stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1540         stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1541         stats_cg->default_groups[5] = NULL;
1542         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1543                         "iscsi_instance", &iscsi_stat_instance_cit);
1544         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1545                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1546         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1547                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1548         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1549                         "iscsi_login_stats", &iscsi_stat_login_cit);
1550         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1551                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1552
1553         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1554         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1555                         " %s\n", name);
1556         return &tiqn->tiqn_wwn;
1557 }
1558
1559 static void lio_target_call_coredeltiqn(
1560         struct se_wwn *wwn)
1561 {
1562         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1563         struct config_item *df_item;
1564         struct config_group *stats_cg;
1565         int i;
1566
1567         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1568         for (i = 0; stats_cg->default_groups[i]; i++) {
1569                 df_item = &stats_cg->default_groups[i]->cg_item;
1570                 stats_cg->default_groups[i] = NULL;
1571                 config_item_put(df_item);
1572         }
1573         kfree(stats_cg->default_groups);
1574
1575         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1576                         tiqn->tiqn);
1577         iscsit_del_tiqn(tiqn);
1578 }
1579
1580 /* End LIO-Target TIQN struct contig_lio_target_cit */
1581
1582 /* Start lio_target_discovery_auth_cit */
1583
1584 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1585         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1586 static ssize_t iscsi_disc_show_##name(                                  \
1587         struct target_fabric_configfs *tf,                              \
1588         char *page)                                                     \
1589 {                                                                       \
1590         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1591                 page);                                                  \
1592 }                                                                       \
1593 static ssize_t iscsi_disc_store_##name(                                 \
1594         struct target_fabric_configfs *tf,                              \
1595         const char *page,                                               \
1596         size_t count)                                                   \
1597 {                                                                       \
1598         return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1599                 page, count);                                           \
1600 }
1601
1602 #define DEF_DISC_AUTH_INT(name)                                         \
1603         __DEF_NACL_AUTH_INT(disc, name)                                 \
1604 static ssize_t iscsi_disc_show_##name(                                  \
1605         struct target_fabric_configfs *tf,                              \
1606         char *page)                                                     \
1607 {                                                                       \
1608         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1609                         page);                                          \
1610 }
1611
1612 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1613 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1614
1615 /*
1616  * One-way authentication userid
1617  */
1618 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1619 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1620 /*
1621  * One-way authentication password
1622  */
1623 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1624 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1625 /*
1626  * Enforce mutual authentication
1627  */
1628 DEF_DISC_AUTH_INT(authenticate_target);
1629 DISC_AUTH_ATTR_RO(authenticate_target);
1630 /*
1631  * Mutual authentication userid
1632  */
1633 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1634 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1635 /*
1636  * Mutual authentication password
1637  */
1638 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1639 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1640
1641 /*
1642  * enforce_discovery_auth
1643  */
1644 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1645         struct target_fabric_configfs *tf,
1646         char *page)
1647 {
1648         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1649
1650         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1651 }
1652
1653 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1654         struct target_fabric_configfs *tf,
1655         const char *page,
1656         size_t count)
1657 {
1658         struct iscsi_param *param;
1659         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1660         u32 op;
1661         int err;
1662
1663         err = kstrtou32(page, 0, &op);
1664         if (err)
1665                 return -EINVAL;
1666         if ((op != 1) && (op != 0)) {
1667                 pr_err("Illegal value for enforce_discovery_auth:"
1668                                 " %u\n", op);
1669                 return -EINVAL;
1670         }
1671
1672         if (!discovery_tpg) {
1673                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1674                 return -EINVAL;
1675         }
1676
1677         param = iscsi_find_param_from_key(AUTHMETHOD,
1678                                 discovery_tpg->param_list);
1679         if (!param)
1680                 return -EINVAL;
1681
1682         if (op) {
1683                 /*
1684                  * Reset the AuthMethod key to CHAP.
1685                  */
1686                 if (iscsi_update_param_value(param, CHAP) < 0)
1687                         return -EINVAL;
1688
1689                 discovery_tpg->tpg_attrib.authentication = 1;
1690                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1691                 pr_debug("LIO-CORE[0] Successfully enabled"
1692                         " authentication enforcement for iSCSI"
1693                         " Discovery TPG\n");
1694         } else {
1695                 /*
1696                  * Reset the AuthMethod key to CHAP,None
1697                  */
1698                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1699                         return -EINVAL;
1700
1701                 discovery_tpg->tpg_attrib.authentication = 0;
1702                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1703                 pr_debug("LIO-CORE[0] Successfully disabled"
1704                         " authentication enforcement for iSCSI"
1705                         " Discovery TPG\n");
1706         }
1707
1708         return count;
1709 }
1710
1711 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1712
1713 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1714         &iscsi_disc_userid.attr,
1715         &iscsi_disc_password.attr,
1716         &iscsi_disc_authenticate_target.attr,
1717         &iscsi_disc_userid_mutual.attr,
1718         &iscsi_disc_password_mutual.attr,
1719         &iscsi_disc_enforce_discovery_auth.attr,
1720         NULL,
1721 };
1722
1723 /* End lio_target_discovery_auth_cit */
1724
1725 /* Start functions for target_core_fabric_ops */
1726
1727 static char *iscsi_get_fabric_name(void)
1728 {
1729         return "iSCSI";
1730 }
1731
1732 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1733 {
1734         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1735
1736         /* only used for printks or comparism with ->ref_task_tag */
1737         return (__force u32)cmd->init_task_tag;
1738 }
1739
1740 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1741 {
1742         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1743
1744         return cmd->i_state;
1745 }
1746
1747 static u32 lio_sess_get_index(struct se_session *se_sess)
1748 {
1749         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1750
1751         return sess->session_index;
1752 }
1753
1754 static u32 lio_sess_get_initiator_sid(
1755         struct se_session *se_sess,
1756         unsigned char *buf,
1757         u32 size)
1758 {
1759         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1760         /*
1761          * iSCSI Initiator Session Identifier from RFC-3720.
1762          */
1763         return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1764                 sess->isid[0], sess->isid[1], sess->isid[2],
1765                 sess->isid[3], sess->isid[4], sess->isid[5]);
1766 }
1767
1768 static int lio_queue_data_in(struct se_cmd *se_cmd)
1769 {
1770         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1771
1772         cmd->i_state = ISTATE_SEND_DATAIN;
1773         cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1774
1775         return 0;
1776 }
1777
1778 static int lio_write_pending(struct se_cmd *se_cmd)
1779 {
1780         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1781         struct iscsi_conn *conn = cmd->conn;
1782
1783         if (!cmd->immediate_data && !cmd->unsolicited_data)
1784                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1785
1786         return 0;
1787 }
1788
1789 static int lio_write_pending_status(struct se_cmd *se_cmd)
1790 {
1791         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1792         int ret;
1793
1794         spin_lock_bh(&cmd->istate_lock);
1795         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1796         spin_unlock_bh(&cmd->istate_lock);
1797
1798         return ret;
1799 }
1800
1801 static int lio_queue_status(struct se_cmd *se_cmd)
1802 {
1803         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1804
1805         cmd->i_state = ISTATE_SEND_STATUS;
1806
1807         if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1808                 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1809                 return 0;
1810         }
1811         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1812
1813         return 0;
1814 }
1815
1816 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1817 {
1818         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1819
1820         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1821         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1822 }
1823
1824 static void lio_aborted_task(struct se_cmd *se_cmd)
1825 {
1826         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1827
1828         cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1829 }
1830
1831 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1832 {
1833         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1834
1835         return &tpg->tpg_tiqn->tiqn[0];
1836 }
1837
1838 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1839 {
1840         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1841
1842         return tpg->tpgt;
1843 }
1844
1845 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1846 {
1847         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1848
1849         return tpg->tpg_attrib.default_cmdsn_depth;
1850 }
1851
1852 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1853 {
1854         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1855
1856         return tpg->tpg_attrib.generate_node_acls;
1857 }
1858
1859 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1860 {
1861         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1862
1863         return tpg->tpg_attrib.cache_dynamic_acls;
1864 }
1865
1866 static int lio_tpg_check_demo_mode_write_protect(
1867         struct se_portal_group *se_tpg)
1868 {
1869         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1870
1871         return tpg->tpg_attrib.demo_mode_write_protect;
1872 }
1873
1874 static int lio_tpg_check_prod_mode_write_protect(
1875         struct se_portal_group *se_tpg)
1876 {
1877         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1878
1879         return tpg->tpg_attrib.prod_mode_write_protect;
1880 }
1881
1882 static void lio_tpg_release_fabric_acl(
1883         struct se_portal_group *se_tpg,
1884         struct se_node_acl *se_acl)
1885 {
1886         struct iscsi_node_acl *acl = container_of(se_acl,
1887                                 struct iscsi_node_acl, se_node_acl);
1888         kfree(acl);
1889 }
1890
1891 /*
1892  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1893  *
1894  * Also, this function calls iscsit_inc_session_usage_count() on the
1895  * struct iscsi_session in question.
1896  */
1897 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1898 {
1899         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1900
1901         spin_lock(&sess->conn_lock);
1902         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1903             atomic_read(&sess->session_logout) ||
1904             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1905                 spin_unlock(&sess->conn_lock);
1906                 return 0;
1907         }
1908         atomic_set(&sess->session_reinstatement, 1);
1909         spin_unlock(&sess->conn_lock);
1910
1911         iscsit_stop_time2retain_timer(sess);
1912         iscsit_stop_session(sess, 1, 1);
1913
1914         return 1;
1915 }
1916
1917 /*
1918  * Calls iscsit_dec_session_usage_count() as inverse of
1919  * lio_tpg_shutdown_session()
1920  */
1921 static void lio_tpg_close_session(struct se_session *se_sess)
1922 {
1923         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1924         /*
1925          * If the iSCSI Session for the iSCSI Initiator Node exists,
1926          * forcefully shutdown the iSCSI NEXUS.
1927          */
1928         iscsit_close_session(sess);
1929 }
1930
1931 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1932 {
1933         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1934
1935         return tpg->tpg_tiqn->tiqn_index;
1936 }
1937
1938 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1939 {
1940         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1941                                 se_node_acl);
1942         struct se_portal_group *se_tpg = se_acl->se_tpg;
1943         struct iscsi_portal_group *tpg = container_of(se_tpg,
1944                                 struct iscsi_portal_group, tpg_se_tpg);
1945
1946         acl->node_attrib.nacl = acl;
1947         iscsit_set_default_node_attribues(acl, tpg);
1948 }
1949
1950 static int lio_check_stop_free(struct se_cmd *se_cmd)
1951 {
1952         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1953 }
1954
1955 static void lio_release_cmd(struct se_cmd *se_cmd)
1956 {
1957         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1958
1959         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1960         iscsit_release_cmd(cmd);
1961 }
1962
1963 /* End functions for target_core_fabric_ops */
1964
1965 int iscsi_target_register_configfs(void)
1966 {
1967         struct target_fabric_configfs *fabric;
1968         int ret;
1969
1970         lio_target_fabric_configfs = NULL;
1971         fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1972         if (IS_ERR(fabric)) {
1973                 pr_err("target_fabric_configfs_init() for"
1974                                 " LIO-Target failed!\n");
1975                 return PTR_ERR(fabric);
1976         }
1977         /*
1978          * Setup the fabric API of function pointers used by target_core_mod..
1979          */
1980         fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1981         fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1982         fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1983         fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1984         fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1985         fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1986         fabric->tf_ops.tpg_get_pr_transport_id_len =
1987                                 &iscsi_get_pr_transport_id_len;
1988         fabric->tf_ops.tpg_parse_pr_out_transport_id =
1989                                 &iscsi_parse_pr_out_transport_id;
1990         fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1991         fabric->tf_ops.tpg_check_demo_mode_cache =
1992                                 &lio_tpg_check_demo_mode_cache;
1993         fabric->tf_ops.tpg_check_demo_mode_write_protect =
1994                                 &lio_tpg_check_demo_mode_write_protect;
1995         fabric->tf_ops.tpg_check_prod_mode_write_protect =
1996                                 &lio_tpg_check_prod_mode_write_protect;
1997         fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1998         fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1999         fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
2000         fabric->tf_ops.check_stop_free = &lio_check_stop_free,
2001         fabric->tf_ops.release_cmd = &lio_release_cmd;
2002         fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
2003         fabric->tf_ops.close_session = &lio_tpg_close_session;
2004         fabric->tf_ops.sess_get_index = &lio_sess_get_index;
2005         fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
2006         fabric->tf_ops.write_pending = &lio_write_pending;
2007         fabric->tf_ops.write_pending_status = &lio_write_pending_status;
2008         fabric->tf_ops.set_default_node_attributes =
2009                                 &lio_set_default_node_attributes;
2010         fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
2011         fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
2012         fabric->tf_ops.queue_data_in = &lio_queue_data_in;
2013         fabric->tf_ops.queue_status = &lio_queue_status;
2014         fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
2015         fabric->tf_ops.aborted_task = &lio_aborted_task;
2016         /*
2017          * Setup function pointers for generic logic in target_core_fabric_configfs.c
2018          */
2019         fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
2020         fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
2021         fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
2022         fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
2023         fabric->tf_ops.fabric_post_link = NULL;
2024         fabric->tf_ops.fabric_pre_unlink = NULL;
2025         fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
2026         fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
2027         fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
2028         fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
2029         /*
2030          * Setup default attribute lists for various fabric->tf_cit_tmpl
2031          * sturct config_item_type's
2032          */
2033         fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
2034         fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
2035         fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
2036         fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
2037         fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
2038         fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
2039         fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
2040         fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
2041         fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
2042         fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
2043         fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
2044
2045         ret = target_fabric_configfs_register(fabric);
2046         if (ret < 0) {
2047                 pr_err("target_fabric_configfs_register() for"
2048                                 " LIO-Target failed!\n");
2049                 target_fabric_configfs_free(fabric);
2050                 return ret;
2051         }
2052
2053         lio_target_fabric_configfs = fabric;
2054         pr_debug("LIO_TARGET[0] - Set fabric ->"
2055                         " lio_target_fabric_configfs\n");
2056         return 0;
2057 }
2058
2059
2060 void iscsi_target_deregister_configfs(void)
2061 {
2062         if (!lio_target_fabric_configfs)
2063                 return;
2064         /*
2065          * Shutdown discovery sessions and disable discovery TPG
2066          */
2067         if (iscsit_global->discovery_tpg)
2068                 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
2069
2070         target_fabric_configfs_deregister(lio_target_fabric_configfs);
2071         lio_target_fabric_configfs = NULL;
2072         pr_debug("LIO_TARGET[0] - Cleared"
2073                                 " lio_target_fabric_configfs\n");
2074 }