1// SPDX-License-Identifier: GPL-2.0-or-later 2/******************************************************************************* 3 * This file contains the configfs implementation for iSCSI Target mode 4 * from the LIO-Target Project. 5 * 6 * (c) Copyright 2007-2013 Datera, Inc. 7 * 8 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> 9 * 10 ****************************************************************************/ 11 12#include <linux/configfs.h> 13#include <linux/ctype.h> 14#include <linux/export.h> 15#include <linux/inet.h> 16#include <linux/module.h> 17#include <net/ipv6.h> 18#include <target/target_core_base.h> 19#include <target/target_core_fabric.h> 20#include <target/iscsi/iscsi_transport.h> 21#include <target/iscsi/iscsi_target_core.h> 22#include "iscsi_target_parameters.h" 23#include "iscsi_target_device.h" 24#include "iscsi_target_erl0.h" 25#include "iscsi_target_nodeattrib.h" 26#include "iscsi_target_tpg.h" 27#include "iscsi_target_util.h" 28#include "iscsi_target.h" 29#include <target/iscsi/iscsi_target_stat.h> 30 31 32/* Start items for lio_target_portal_cit */ 33 34static inline struct iscsi_tpg_np *to_iscsi_tpg_np(struct config_item *item) 35{ 36 return container_of(to_tpg_np(item), struct iscsi_tpg_np, se_tpg_np); 37} 38 39static ssize_t lio_target_np_driver_show(struct config_item *item, char *page, 40 enum iscsit_transport_type type) 41{ 42 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item); 43 struct iscsi_tpg_np *tpg_np_new; 44 ssize_t rb; 45 46 tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type); 47 if (tpg_np_new) 48 rb = sprintf(page, "1\n"); 49 else 50 rb = sprintf(page, "0\n"); 51 52 return rb; 53} 54 55static ssize_t lio_target_np_driver_store(struct config_item *item, 56 const char *page, size_t count, enum iscsit_transport_type type, 57 const char *mod_name) 58{ 59 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item); 60 struct iscsi_np *np; 61 struct iscsi_portal_group *tpg; 62 struct iscsi_tpg_np *tpg_np_new = NULL; 63 u32 op; 64 int rc; 65 66 rc = kstrtou32(page, 0, &op); 67 if (rc) 68 return rc; 69 if ((op != 1) && (op != 0)) { 70 pr_err("Illegal value for tpg_enable: %u\n", op); 71 return -EINVAL; 72 } 73 np = tpg_np->tpg_np; 74 if (!np) { 75 pr_err("Unable to locate struct iscsi_np from" 76 " struct iscsi_tpg_np\n"); 77 return -EINVAL; 78 } 79 80 tpg = tpg_np->tpg; 81 if (iscsit_get_tpg(tpg) < 0) 82 return -EINVAL; 83 84 if (op) { 85 if (strlen(mod_name)) { 86 rc = request_module(mod_name); 87 if (rc != 0) { 88 pr_warn("Unable to request_module for %s\n", 89 mod_name); 90 rc = 0; 91 } 92 } 93 94 tpg_np_new = iscsit_tpg_add_network_portal(tpg, 95 &np->np_sockaddr, tpg_np, type); 96 if (IS_ERR(tpg_np_new)) { 97 rc = PTR_ERR(tpg_np_new); 98 goto out; 99 } 100 } else { 101 tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type); 102 if (tpg_np_new) { 103 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_new); 104 if (rc < 0) 105 goto out; 106 } 107 } 108 109 iscsit_put_tpg(tpg); 110 return count; 111out: 112 iscsit_put_tpg(tpg); 113 return rc; 114} 115 116static ssize_t lio_target_np_iser_show(struct config_item *item, char *page) 117{ 118 return lio_target_np_driver_show(item, page, ISCSI_INFINIBAND); 119} 120 121static ssize_t lio_target_np_iser_store(struct config_item *item, 122 const char *page, size_t count) 123{ 124 return lio_target_np_driver_store(item, page, count, 125 ISCSI_INFINIBAND, "ib_isert"); 126} 127CONFIGFS_ATTR(lio_target_np_, iser); 128 129static ssize_t lio_target_np_cxgbit_show(struct config_item *item, char *page) 130{ 131 return lio_target_np_driver_show(item, page, ISCSI_CXGBIT); 132} 133 134static ssize_t lio_target_np_cxgbit_store(struct config_item *item, 135 const char *page, size_t count) 136{ 137 return lio_target_np_driver_store(item, page, count, 138 ISCSI_CXGBIT, "cxgbit"); 139} 140CONFIGFS_ATTR(lio_target_np_, cxgbit); 141 142static struct configfs_attribute *lio_target_portal_attrs[] = { 143 &lio_target_np_attr_iser, 144 &lio_target_np_attr_cxgbit, 145 NULL, 146}; 147 148/* Stop items for lio_target_portal_cit */ 149 150/* Start items for lio_target_np_cit */ 151 152#define MAX_PORTAL_LEN 256 153 154static struct se_tpg_np *lio_target_call_addnptotpg( 155 struct se_portal_group *se_tpg, 156 struct config_group *group, 157 const char *name) 158{ 159 struct iscsi_portal_group *tpg; 160 struct iscsi_tpg_np *tpg_np; 161 char *str, *str2, *ip_str, *port_str; 162 struct sockaddr_storage sockaddr = { }; 163 int ret; 164 char buf[MAX_PORTAL_LEN + 1]; 165 166 if (strlen(name) > MAX_PORTAL_LEN) { 167 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n", 168 (int)strlen(name), MAX_PORTAL_LEN); 169 return ERR_PTR(-EOVERFLOW); 170 } 171 memset(buf, 0, MAX_PORTAL_LEN + 1); 172 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name); 173 174 str = strstr(buf, "["); 175 if (str) { 176 str2 = strstr(str, "]"); 177 if (!str2) { 178 pr_err("Unable to locate trailing \"]\"" 179 " in IPv6 iSCSI network portal address\n"); 180 return ERR_PTR(-EINVAL); 181 } 182 183 ip_str = str + 1; /* Skip over leading "[" */ 184 *str2 = '\0'; /* Terminate the unbracketed IPv6 address */ 185 str2++; /* Skip over the \0 */ 186 187 port_str = strstr(str2, ":"); 188 if (!port_str) { 189 pr_err("Unable to locate \":port\"" 190 " in IPv6 iSCSI network portal address\n"); 191 return ERR_PTR(-EINVAL); 192 } 193 *port_str = '\0'; /* Terminate string for IP */ 194 port_str++; /* Skip over ":" */ 195 } else { 196 ip_str = &buf[0]; 197 port_str = strstr(ip_str, ":"); 198 if (!port_str) { 199 pr_err("Unable to locate \":port\"" 200 " in IPv4 iSCSI network portal address\n"); 201 return ERR_PTR(-EINVAL); 202 } 203 *port_str = '\0'; /* Terminate string for IP */ 204 port_str++; /* Skip over ":" */ 205 } 206 207 ret = inet_pton_with_scope(&init_net, AF_UNSPEC, ip_str, 208 port_str, &sockaddr); 209 if (ret) { 210 pr_err("malformed ip/port passed: %s\n", name); 211 return ERR_PTR(ret); 212 } 213 214 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg); 215 ret = iscsit_get_tpg(tpg); 216 if (ret < 0) 217 return ERR_PTR(-EINVAL); 218 219 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu" 220 " PORTAL: %s\n", 221 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item), 222 tpg->tpgt, name); 223 /* 224 * Assume ISCSI_TCP by default. Other network portals for other 225 * iSCSI fabrics: 226 * 227 * Traditional iSCSI over SCTP (initial support) 228 * iSER/TCP (TODO, hardware available) 229 * iSER/SCTP (TODO, software emulation with osc-iwarp) 230 * iSER/IB (TODO, hardware available) 231 * 232 * can be enabled with attributes under 233 * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/ 234 * 235 */ 236 tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL, 237 ISCSI_TCP); 238 if (IS_ERR(tpg_np)) { 239 iscsit_put_tpg(tpg); 240 return ERR_CAST(tpg_np); 241 } 242 pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n"); 243 244 iscsit_put_tpg(tpg); 245 return &tpg_np->se_tpg_np; 246} 247 248static void lio_target_call_delnpfromtpg( 249 struct se_tpg_np *se_tpg_np) 250{ 251 struct iscsi_portal_group *tpg; 252 struct iscsi_tpg_np *tpg_np; 253 struct se_portal_group *se_tpg; 254 int ret; 255 256 tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np); 257 tpg = tpg_np->tpg; 258 ret = iscsit_get_tpg(tpg); 259 if (ret < 0) 260 return; 261 262 se_tpg = &tpg->tpg_se_tpg; 263 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu" 264 " PORTAL: %pISpc\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item), 265 tpg->tpgt, &tpg_np->tpg_np->np_sockaddr); 266 267 ret = iscsit_tpg_del_network_portal(tpg, tpg_np); 268 if (ret < 0) 269 goto out; 270 271 pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n"); 272out: 273 iscsit_put_tpg(tpg); 274} 275 276/* End items for lio_target_np_cit */ 277 278/* Start items for lio_target_nacl_attrib_cit */ 279 280#define ISCSI_NACL_ATTR(name) \ 281static ssize_t iscsi_nacl_attrib_##name##_show(struct config_item *item,\ 282 char *page) \ 283{ \ 284 struct se_node_acl *se_nacl = attrib_to_nacl(item); \ 285 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \ 286 se_node_acl); \ 287 \ 288 return sprintf(page, "%u\n", nacl->node_attrib.name); \ 289} \ 290 \ 291static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\ 292 const char *page, size_t count) \ 293{ \ 294 struct se_node_acl *se_nacl = attrib_to_nacl(item); \ 295 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \ 296 se_node_acl); \ 297 u32 val; \ 298 int ret; \ 299 \ 300 ret = kstrtou32(page, 0, &val); \ 301 if (ret) \ 302 return ret; \ 303 ret = iscsit_na_##name(nacl, val); \ 304 if (ret < 0) \ 305 return ret; \ 306 \ 307 return count; \ 308} \ 309 \ 310CONFIGFS_ATTR(iscsi_nacl_attrib_, name) 311 312ISCSI_NACL_ATTR(dataout_timeout); 313ISCSI_NACL_ATTR(dataout_timeout_retries); 314ISCSI_NACL_ATTR(default_erl); 315ISCSI_NACL_ATTR(nopin_timeout); 316ISCSI_NACL_ATTR(nopin_response_timeout); 317ISCSI_NACL_ATTR(random_datain_pdu_offsets); 318ISCSI_NACL_ATTR(random_datain_seq_offsets); 319ISCSI_NACL_ATTR(random_r2t_offsets); 320 321static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = { 322 &iscsi_nacl_attrib_attr_dataout_timeout, 323 &iscsi_nacl_attrib_attr_dataout_timeout_retries, 324 &iscsi_nacl_attrib_attr_default_erl, 325 &iscsi_nacl_attrib_attr_nopin_timeout, 326 &iscsi_nacl_attrib_attr_nopin_response_timeout, 327 &iscsi_nacl_attrib_attr_random_datain_pdu_offsets, 328 &iscsi_nacl_attrib_attr_random_datain_seq_offsets, 329 &iscsi_nacl_attrib_attr_random_r2t_offsets, 330 NULL, 331}; 332 333/* End items for lio_target_nacl_attrib_cit */ 334 335/* Start items for lio_target_nacl_auth_cit */ 336 337#define __DEF_NACL_AUTH_STR(prefix, name, flags) \ 338static ssize_t __iscsi_##prefix##_##name##_show( \ 339 struct iscsi_node_acl *nacl, \ 340 char *page) \ 341{ \ 342 struct iscsi_node_auth *auth = &nacl->node_auth; \ 343 \ 344 if (!capable(CAP_SYS_ADMIN)) \ 345 return -EPERM; \ 346 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \ 347} \ 348 \ 349static ssize_t __iscsi_##prefix##_##name##_store( \ 350 struct iscsi_node_acl *nacl, \ 351 const char *page, \ 352 size_t count) \ 353{ \ 354 struct iscsi_node_auth *auth = &nacl->node_auth; \ 355 \ 356 if (!capable(CAP_SYS_ADMIN)) \ 357 return -EPERM; \ 358 if (count >= sizeof(auth->name)) \ 359 return -EINVAL; \ 360 snprintf(auth->name, sizeof(auth->name), "%s", page); \ 361 if (!strncmp("NULL", auth->name, 4)) \ 362 auth->naf_flags &= ~flags; \ 363 else \ 364 auth->naf_flags |= flags; \ 365 \ 366 if ((auth->naf_flags & NAF_USERID_IN_SET) && \ 367 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \ 368 auth->authenticate_target = 1; \ 369 else \ 370 auth->authenticate_target = 0; \ 371 \ 372 return count; \ 373} 374 375#define DEF_NACL_AUTH_STR(name, flags) \ 376 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \ 377static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \ 378 char *page) \ 379{ \ 380 struct se_node_acl *nacl = auth_to_nacl(item); \ 381 return __iscsi_nacl_auth_##name##_show(container_of(nacl, \ 382 struct iscsi_node_acl, se_node_acl), page); \ 383} \ 384static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \ 385 const char *page, size_t count) \ 386{ \ 387 struct se_node_acl *nacl = auth_to_nacl(item); \ 388 return __iscsi_nacl_auth_##name##_store(container_of(nacl, \ 389 struct iscsi_node_acl, se_node_acl), page, count); \ 390} \ 391 \ 392CONFIGFS_ATTR(iscsi_nacl_auth_, name) 393 394/* 395 * One-way authentication userid 396 */ 397DEF_NACL_AUTH_STR(userid, NAF_USERID_SET); 398DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET); 399DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 400DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 401 402#define __DEF_NACL_AUTH_INT(prefix, name) \ 403static ssize_t __iscsi_##prefix##_##name##_show( \ 404 struct iscsi_node_acl *nacl, \ 405 char *page) \ 406{ \ 407 struct iscsi_node_auth *auth = &nacl->node_auth; \ 408 \ 409 if (!capable(CAP_SYS_ADMIN)) \ 410 return -EPERM; \ 411 \ 412 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \ 413} 414 415#define DEF_NACL_AUTH_INT(name) \ 416 __DEF_NACL_AUTH_INT(nacl_auth, name) \ 417static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \ 418 char *page) \ 419{ \ 420 struct se_node_acl *nacl = auth_to_nacl(item); \ 421 return __iscsi_nacl_auth_##name##_show(container_of(nacl, \ 422 struct iscsi_node_acl, se_node_acl), page); \ 423} \ 424 \ 425CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name) 426 427DEF_NACL_AUTH_INT(authenticate_target); 428 429static struct configfs_attribute *lio_target_nacl_auth_attrs[] = { 430 &iscsi_nacl_auth_attr_userid, 431 &iscsi_nacl_auth_attr_password, 432 &iscsi_nacl_auth_attr_authenticate_target, 433 &iscsi_nacl_auth_attr_userid_mutual, 434 &iscsi_nacl_auth_attr_password_mutual, 435 NULL, 436}; 437 438/* End items for lio_target_nacl_auth_cit */ 439 440/* Start items for lio_target_nacl_param_cit */ 441 442#define ISCSI_NACL_PARAM(name) \ 443static ssize_t iscsi_nacl_param_##name##_show(struct config_item *item, \ 444 char *page) \ 445{ \ 446 struct se_node_acl *se_nacl = param_to_nacl(item); \ 447 struct iscsi_session *sess; \ 448 struct se_session *se_sess; \ 449 ssize_t rb; \ 450 \ 451 spin_lock_bh(&se_nacl->nacl_sess_lock); \ 452 se_sess = se_nacl->nacl_sess; \ 453 if (!se_sess) { \ 454 rb = snprintf(page, PAGE_SIZE, \ 455 "No Active iSCSI Session\n"); \ 456 } else { \ 457 sess = se_sess->fabric_sess_ptr; \ 458 rb = snprintf(page, PAGE_SIZE, "%u\n", \ 459 (u32)sess->sess_ops->name); \ 460 } \ 461 spin_unlock_bh(&se_nacl->nacl_sess_lock); \ 462 \ 463 return rb; \ 464} \ 465 \ 466CONFIGFS_ATTR_RO(iscsi_nacl_param_, name) 467 468ISCSI_NACL_PARAM(MaxConnections); 469ISCSI_NACL_PARAM(InitialR2T); 470ISCSI_NACL_PARAM(ImmediateData); 471ISCSI_NACL_PARAM(MaxBurstLength); 472ISCSI_NACL_PARAM(FirstBurstLength); 473ISCSI_NACL_PARAM(DefaultTime2Wait); 474ISCSI_NACL_PARAM(DefaultTime2Retain); 475ISCSI_NACL_PARAM(MaxOutstandingR2T); 476ISCSI_NACL_PARAM(DataPDUInOrder); 477ISCSI_NACL_PARAM(DataSequenceInOrder); 478ISCSI_NACL_PARAM(ErrorRecoveryLevel); 479 480static struct configfs_attribute *lio_target_nacl_param_attrs[] = { 481 &iscsi_nacl_param_attr_MaxConnections, 482 &iscsi_nacl_param_attr_InitialR2T, 483 &iscsi_nacl_param_attr_ImmediateData, 484 &iscsi_nacl_param_attr_MaxBurstLength, 485 &iscsi_nacl_param_attr_FirstBurstLength, 486 &iscsi_nacl_param_attr_DefaultTime2Wait, 487 &iscsi_nacl_param_attr_DefaultTime2Retain, 488 &iscsi_nacl_param_attr_MaxOutstandingR2T, 489 &iscsi_nacl_param_attr_DataPDUInOrder, 490 &iscsi_nacl_param_attr_DataSequenceInOrder, 491 &iscsi_nacl_param_attr_ErrorRecoveryLevel, 492 NULL, 493}; 494 495/* End items for lio_target_nacl_param_cit */ 496 497/* Start items for lio_target_acl_cit */ 498 499static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page) 500{ 501 struct se_node_acl *se_nacl = acl_to_nacl(item); 502 struct iscsi_session *sess; 503 struct iscsi_conn *conn; 504 struct se_session *se_sess; 505 ssize_t rb = 0; 506 u32 max_cmd_sn; 507 508 spin_lock_bh(&se_nacl->nacl_sess_lock); 509 se_sess = se_nacl->nacl_sess; 510 if (!se_sess) { 511 rb += sysfs_emit_at(page, rb, "No active iSCSI Session for Initiator" 512 " Endpoint: %s\n", se_nacl->initiatorname); 513 } else { 514 sess = se_sess->fabric_sess_ptr; 515 516 rb += sysfs_emit_at(page, rb, "InitiatorName: %s\n", 517 sess->sess_ops->InitiatorName); 518 rb += sysfs_emit_at(page, rb, "InitiatorAlias: %s\n", 519 sess->sess_ops->InitiatorAlias); 520 521 rb += sysfs_emit_at(page, rb, 522 "LIO Session ID: %u ISID: 0x%6ph TSIH: %hu ", 523 sess->sid, sess->isid, sess->tsih); 524 rb += sysfs_emit_at(page, rb, "SessionType: %s\n", 525 (sess->sess_ops->SessionType) ? 526 "Discovery" : "Normal"); 527 rb += sysfs_emit_at(page, rb, "Session State: "); 528 switch (sess->session_state) { 529 case TARG_SESS_STATE_FREE: 530 rb += sysfs_emit_at(page, rb, "TARG_SESS_FREE\n"); 531 break; 532 case TARG_SESS_STATE_ACTIVE: 533 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_ACTIVE\n"); 534 break; 535 case TARG_SESS_STATE_LOGGED_IN: 536 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_LOGGED_IN\n"); 537 break; 538 case TARG_SESS_STATE_FAILED: 539 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_FAILED\n"); 540 break; 541 case TARG_SESS_STATE_IN_CONTINUE: 542 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_IN_CONTINUE\n"); 543 break; 544 default: 545 rb += sysfs_emit_at(page, rb, "ERROR: Unknown Session" 546 " State!\n"); 547 break; 548 } 549 550 rb += sysfs_emit_at(page, rb, "---------------------[iSCSI Session" 551 " Values]-----------------------\n"); 552 rb += sysfs_emit_at(page, rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN" 553 " : MaxCmdSN : ITT : TTT\n"); 554 max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn); 555 rb += sysfs_emit_at(page, rb, " 0x%08x 0x%08x 0x%08x 0x%08x" 556 " 0x%08x 0x%08x\n", 557 sess->cmdsn_window, 558 (max_cmd_sn - sess->exp_cmd_sn) + 1, 559 sess->exp_cmd_sn, max_cmd_sn, 560 sess->init_task_tag, sess->targ_xfer_tag); 561 rb += sysfs_emit_at(page, rb, "----------------------[iSCSI" 562 " Connections]-------------------------\n"); 563 564 spin_lock(&sess->conn_lock); 565 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) { 566 rb += sysfs_emit_at(page, rb, "CID: %hu Connection" 567 " State: ", conn->cid); 568 switch (conn->conn_state) { 569 case TARG_CONN_STATE_FREE: 570 rb += sysfs_emit_at(page, rb, 571 "TARG_CONN_STATE_FREE\n"); 572 break; 573 case TARG_CONN_STATE_XPT_UP: 574 rb += sysfs_emit_at(page, rb, 575 "TARG_CONN_STATE_XPT_UP\n"); 576 break; 577 case TARG_CONN_STATE_IN_LOGIN: 578 rb += sysfs_emit_at(page, rb, 579 "TARG_CONN_STATE_IN_LOGIN\n"); 580 break; 581 case TARG_CONN_STATE_LOGGED_IN: 582 rb += sysfs_emit_at(page, rb, 583 "TARG_CONN_STATE_LOGGED_IN\n"); 584 break; 585 case TARG_CONN_STATE_IN_LOGOUT: 586 rb += sysfs_emit_at(page, rb, 587 "TARG_CONN_STATE_IN_LOGOUT\n"); 588 break; 589 case TARG_CONN_STATE_LOGOUT_REQUESTED: 590 rb += sysfs_emit_at(page, rb, 591 "TARG_CONN_STATE_LOGOUT_REQUESTED\n"); 592 break; 593 case TARG_CONN_STATE_CLEANUP_WAIT: 594 rb += sysfs_emit_at(page, rb, 595 "TARG_CONN_STATE_CLEANUP_WAIT\n"); 596 break; 597 default: 598 rb += sysfs_emit_at(page, rb, 599 "ERROR: Unknown Connection State!\n"); 600 break; 601 } 602 603 rb += sysfs_emit_at(page, rb, " Address %pISc %s", &conn->login_sockaddr, 604 (conn->network_transport == ISCSI_TCP) ? 605 "TCP" : "SCTP"); 606 rb += sysfs_emit_at(page, rb, " StatSN: 0x%08x\n", 607 conn->stat_sn); 608 } 609 spin_unlock(&sess->conn_lock); 610 } 611 spin_unlock_bh(&se_nacl->nacl_sess_lock); 612 613 return rb; 614} 615 616static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item, 617 char *page) 618{ 619 return sprintf(page, "%u\n", acl_to_nacl(item)->queue_depth); 620} 621 622static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item, 623 const char *page, size_t count) 624{ 625 struct se_node_acl *se_nacl = acl_to_nacl(item); 626 struct se_portal_group *se_tpg = se_nacl->se_tpg; 627 struct iscsi_portal_group *tpg = container_of(se_tpg, 628 struct iscsi_portal_group, tpg_se_tpg); 629 struct config_item *acl_ci, *tpg_ci, *wwn_ci; 630 u32 cmdsn_depth = 0; 631 int ret; 632 633 ret = kstrtou32(page, 0, &cmdsn_depth); 634 if (ret) 635 return ret; 636 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 637 pr_err("Passed cmdsn_depth: %u exceeds" 638 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth, 639 TA_DEFAULT_CMDSN_DEPTH_MAX); 640 return -EINVAL; 641 } 642 acl_ci = &se_nacl->acl_group.cg_item; 643 if (!acl_ci) { 644 pr_err("Unable to locatel acl_ci\n"); 645 return -EINVAL; 646 } 647 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item; 648 if (!tpg_ci) { 649 pr_err("Unable to locate tpg_ci\n"); 650 return -EINVAL; 651 } 652 wwn_ci = &tpg_ci->ci_group->cg_item; 653 if (!wwn_ci) { 654 pr_err("Unable to locate config_item wwn_ci\n"); 655 return -EINVAL; 656 } 657 658 if (iscsit_get_tpg(tpg) < 0) 659 return -EINVAL; 660 661 ret = core_tpg_set_initiator_node_queue_depth(se_nacl, cmdsn_depth); 662 663 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for" 664 "InitiatorName: %s\n", config_item_name(wwn_ci), 665 config_item_name(tpg_ci), cmdsn_depth, 666 config_item_name(acl_ci)); 667 668 iscsit_put_tpg(tpg); 669 return (!ret) ? count : (ssize_t)ret; 670} 671 672static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page) 673{ 674 return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag); 675} 676 677static ssize_t lio_target_nacl_tag_store(struct config_item *item, 678 const char *page, size_t count) 679{ 680 struct se_node_acl *se_nacl = acl_to_nacl(item); 681 int ret; 682 683 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page); 684 685 if (ret < 0) 686 return ret; 687 return count; 688} 689 690CONFIGFS_ATTR_RO(lio_target_nacl_, info); 691CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth); 692CONFIGFS_ATTR(lio_target_nacl_, tag); 693 694static struct configfs_attribute *lio_target_initiator_attrs[] = { 695 &lio_target_nacl_attr_info, 696 &lio_target_nacl_attr_cmdsn_depth, 697 &lio_target_nacl_attr_tag, 698 NULL, 699}; 700 701static int lio_target_init_nodeacl(struct se_node_acl *se_nacl, 702 const char *name) 703{ 704 struct iscsi_node_acl *acl = 705 container_of(se_nacl, struct iscsi_node_acl, se_node_acl); 706 707 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group, 708 "iscsi_sess_stats", &iscsi_stat_sess_cit); 709 configfs_add_default_group(&acl->node_stat_grps.iscsi_sess_stats_group, 710 &se_nacl->acl_fabric_stat_group); 711 return 0; 712} 713 714/* End items for lio_target_acl_cit */ 715 716/* Start items for lio_target_tpg_attrib_cit */ 717 718#define DEF_TPG_ATTRIB(name) \ 719 \ 720static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \ 721 char *page) \ 722{ \ 723 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 724 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 725 struct iscsi_portal_group, tpg_se_tpg); \ 726 ssize_t rb; \ 727 \ 728 if (iscsit_get_tpg(tpg) < 0) \ 729 return -EINVAL; \ 730 \ 731 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 732 iscsit_put_tpg(tpg); \ 733 return rb; \ 734} \ 735 \ 736static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\ 737 const char *page, size_t count) \ 738{ \ 739 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 740 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 741 struct iscsi_portal_group, tpg_se_tpg); \ 742 u32 val; \ 743 int ret; \ 744 \ 745 if (iscsit_get_tpg(tpg) < 0) \ 746 return -EINVAL; \ 747 \ 748 ret = kstrtou32(page, 0, &val); \ 749 if (ret) \ 750 goto out; \ 751 ret = iscsit_ta_##name(tpg, val); \ 752 if (ret < 0) \ 753 goto out; \ 754 \ 755 iscsit_put_tpg(tpg); \ 756 return count; \ 757out: \ 758 iscsit_put_tpg(tpg); \ 759 return ret; \ 760} \ 761CONFIGFS_ATTR(iscsi_tpg_attrib_, name) 762 763DEF_TPG_ATTRIB(authentication); 764DEF_TPG_ATTRIB(login_timeout); 765DEF_TPG_ATTRIB(netif_timeout); 766DEF_TPG_ATTRIB(generate_node_acls); 767DEF_TPG_ATTRIB(default_cmdsn_depth); 768DEF_TPG_ATTRIB(cache_dynamic_acls); 769DEF_TPG_ATTRIB(demo_mode_write_protect); 770DEF_TPG_ATTRIB(prod_mode_write_protect); 771DEF_TPG_ATTRIB(demo_mode_discovery); 772DEF_TPG_ATTRIB(default_erl); 773DEF_TPG_ATTRIB(t10_pi); 774DEF_TPG_ATTRIB(fabric_prot_type); 775DEF_TPG_ATTRIB(tpg_enabled_sendtargets); 776DEF_TPG_ATTRIB(login_keys_workaround); 777 778static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = { 779 &iscsi_tpg_attrib_attr_authentication, 780 &iscsi_tpg_attrib_attr_login_timeout, 781 &iscsi_tpg_attrib_attr_netif_timeout, 782 &iscsi_tpg_attrib_attr_generate_node_acls, 783 &iscsi_tpg_attrib_attr_default_cmdsn_depth, 784 &iscsi_tpg_attrib_attr_cache_dynamic_acls, 785 &iscsi_tpg_attrib_attr_demo_mode_write_protect, 786 &iscsi_tpg_attrib_attr_prod_mode_write_protect, 787 &iscsi_tpg_attrib_attr_demo_mode_discovery, 788 &iscsi_tpg_attrib_attr_default_erl, 789 &iscsi_tpg_attrib_attr_t10_pi, 790 &iscsi_tpg_attrib_attr_fabric_prot_type, 791 &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets, 792 &iscsi_tpg_attrib_attr_login_keys_workaround, 793 NULL, 794}; 795 796/* End items for lio_target_tpg_attrib_cit */ 797 798/* Start items for lio_target_tpg_auth_cit */ 799 800#define __DEF_TPG_AUTH_STR(prefix, name, flags) \ 801static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \ 802 char *page) \ 803{ \ 804 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 805 struct iscsi_portal_group, tpg_se_tpg); \ 806 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 807 \ 808 if (!capable(CAP_SYS_ADMIN)) \ 809 return -EPERM; \ 810 \ 811 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \ 812} \ 813 \ 814static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\ 815 const char *page, size_t count) \ 816{ \ 817 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 818 struct iscsi_portal_group, tpg_se_tpg); \ 819 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 820 \ 821 if (!capable(CAP_SYS_ADMIN)) \ 822 return -EPERM; \ 823 \ 824 snprintf(auth->name, sizeof(auth->name), "%s", page); \ 825 if (!(strncmp("NULL", auth->name, 4))) \ 826 auth->naf_flags &= ~flags; \ 827 else \ 828 auth->naf_flags |= flags; \ 829 \ 830 if ((auth->naf_flags & NAF_USERID_IN_SET) && \ 831 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \ 832 auth->authenticate_target = 1; \ 833 else \ 834 auth->authenticate_target = 0; \ 835 \ 836 return count; \ 837} 838 839#define DEF_TPG_AUTH_STR(name, flags) \ 840 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \ 841static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \ 842 char *page) \ 843{ \ 844 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \ 845} \ 846 \ 847static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item, \ 848 const char *page, size_t count) \ 849{ \ 850 return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \ 851} \ 852 \ 853CONFIGFS_ATTR(iscsi_tpg_auth_, name); 854 855 856DEF_TPG_AUTH_STR(userid, NAF_USERID_SET); 857DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET); 858DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 859DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 860 861#define __DEF_TPG_AUTH_INT(prefix, name) \ 862static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \ 863 char *page) \ 864{ \ 865 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 866 struct iscsi_portal_group, tpg_se_tpg); \ 867 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 868 \ 869 if (!capable(CAP_SYS_ADMIN)) \ 870 return -EPERM; \ 871 \ 872 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \ 873} 874 875#define DEF_TPG_AUTH_INT(name) \ 876 __DEF_TPG_AUTH_INT(tpg_auth, name) \ 877static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \ 878 char *page) \ 879{ \ 880 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \ 881} \ 882CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name); 883 884DEF_TPG_AUTH_INT(authenticate_target); 885 886static struct configfs_attribute *lio_target_tpg_auth_attrs[] = { 887 &iscsi_tpg_auth_attr_userid, 888 &iscsi_tpg_auth_attr_password, 889 &iscsi_tpg_auth_attr_authenticate_target, 890 &iscsi_tpg_auth_attr_userid_mutual, 891 &iscsi_tpg_auth_attr_password_mutual, 892 NULL, 893}; 894 895/* End items for lio_target_tpg_auth_cit */ 896 897/* Start items for lio_target_tpg_param_cit */ 898 899#define DEF_TPG_PARAM(name) \ 900static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item, \ 901 char *page) \ 902{ \ 903 struct se_portal_group *se_tpg = param_to_tpg(item); \ 904 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 905 struct iscsi_portal_group, tpg_se_tpg); \ 906 struct iscsi_param *param; \ 907 ssize_t rb; \ 908 \ 909 if (iscsit_get_tpg(tpg) < 0) \ 910 return -EINVAL; \ 911 \ 912 param = iscsi_find_param_from_key(__stringify(name), \ 913 tpg->param_list); \ 914 if (!param) { \ 915 iscsit_put_tpg(tpg); \ 916 return -EINVAL; \ 917 } \ 918 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \ 919 \ 920 iscsit_put_tpg(tpg); \ 921 return rb; \ 922} \ 923static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \ 924 const char *page, size_t count) \ 925{ \ 926 struct se_portal_group *se_tpg = param_to_tpg(item); \ 927 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 928 struct iscsi_portal_group, tpg_se_tpg); \ 929 char *buf; \ 930 int ret, len; \ 931 \ 932 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \ 933 if (!buf) \ 934 return -ENOMEM; \ 935 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \ 936 if (isspace(buf[len-1])) \ 937 buf[len-1] = '\0'; /* Kill newline */ \ 938 \ 939 if (iscsit_get_tpg(tpg) < 0) { \ 940 kfree(buf); \ 941 return -EINVAL; \ 942 } \ 943 \ 944 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \ 945 if (ret < 0) \ 946 goto out; \ 947 \ 948 kfree(buf); \ 949 iscsit_put_tpg(tpg); \ 950 return count; \ 951out: \ 952 kfree(buf); \ 953 iscsit_put_tpg(tpg); \ 954 return -EINVAL; \ 955} \ 956CONFIGFS_ATTR(iscsi_tpg_param_, name) 957 958DEF_TPG_PARAM(AuthMethod); 959DEF_TPG_PARAM(HeaderDigest); 960DEF_TPG_PARAM(DataDigest); 961DEF_TPG_PARAM(MaxConnections); 962DEF_TPG_PARAM(TargetAlias); 963DEF_TPG_PARAM(InitialR2T); 964DEF_TPG_PARAM(ImmediateData); 965DEF_TPG_PARAM(MaxRecvDataSegmentLength); 966DEF_TPG_PARAM(MaxXmitDataSegmentLength); 967DEF_TPG_PARAM(MaxBurstLength); 968DEF_TPG_PARAM(FirstBurstLength); 969DEF_TPG_PARAM(DefaultTime2Wait); 970DEF_TPG_PARAM(DefaultTime2Retain); 971DEF_TPG_PARAM(MaxOutstandingR2T); 972DEF_TPG_PARAM(DataPDUInOrder); 973DEF_TPG_PARAM(DataSequenceInOrder); 974DEF_TPG_PARAM(ErrorRecoveryLevel); 975DEF_TPG_PARAM(IFMarker); 976DEF_TPG_PARAM(OFMarker); 977DEF_TPG_PARAM(IFMarkInt); 978DEF_TPG_PARAM(OFMarkInt); 979 980static struct configfs_attribute *lio_target_tpg_param_attrs[] = { 981 &iscsi_tpg_param_attr_AuthMethod, 982 &iscsi_tpg_param_attr_HeaderDigest, 983 &iscsi_tpg_param_attr_DataDigest, 984 &iscsi_tpg_param_attr_MaxConnections, 985 &iscsi_tpg_param_attr_TargetAlias, 986 &iscsi_tpg_param_attr_InitialR2T, 987 &iscsi_tpg_param_attr_ImmediateData, 988 &iscsi_tpg_param_attr_MaxRecvDataSegmentLength, 989 &iscsi_tpg_param_attr_MaxXmitDataSegmentLength, 990 &iscsi_tpg_param_attr_MaxBurstLength, 991 &iscsi_tpg_param_attr_FirstBurstLength, 992 &iscsi_tpg_param_attr_DefaultTime2Wait, 993 &iscsi_tpg_param_attr_DefaultTime2Retain, 994 &iscsi_tpg_param_attr_MaxOutstandingR2T, 995 &iscsi_tpg_param_attr_DataPDUInOrder, 996 &iscsi_tpg_param_attr_DataSequenceInOrder, 997 &iscsi_tpg_param_attr_ErrorRecoveryLevel, 998 &iscsi_tpg_param_attr_IFMarker, 999 &iscsi_tpg_param_attr_OFMarker, 1000 &iscsi_tpg_param_attr_IFMarkInt, 1001 &iscsi_tpg_param_attr_OFMarkInt, 1002 NULL, 1003}; 1004 1005/* End items for lio_target_tpg_param_cit */ 1006 1007/* Start items for lio_target_tpg_cit */ 1008 1009static ssize_t lio_target_tpg_enable_show(struct config_item *item, char *page) 1010{ 1011 struct se_portal_group *se_tpg = to_tpg(item); 1012 struct iscsi_portal_group *tpg = container_of(se_tpg, 1013 struct iscsi_portal_group, tpg_se_tpg); 1014 ssize_t len; 1015 1016 spin_lock(&tpg->tpg_state_lock); 1017 len = sprintf(page, "%d\n", 1018 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0); 1019 spin_unlock(&tpg->tpg_state_lock); 1020 1021 return len; 1022} 1023 1024static ssize_t lio_target_tpg_enable_store(struct config_item *item, 1025 const char *page, size_t count) 1026{ 1027 struct se_portal_group *se_tpg = to_tpg(item); 1028 struct iscsi_portal_group *tpg = container_of(se_tpg, 1029 struct iscsi_portal_group, tpg_se_tpg); 1030 u32 op; 1031 int ret; 1032 1033 ret = kstrtou32(page, 0, &op); 1034 if (ret) 1035 return ret; 1036 if ((op != 1) && (op != 0)) { 1037 pr_err("Illegal value for tpg_enable: %u\n", op); 1038 return -EINVAL; 1039 } 1040 1041 ret = iscsit_get_tpg(tpg); 1042 if (ret < 0) 1043 return -EINVAL; 1044 1045 if (op) { 1046 ret = iscsit_tpg_enable_portal_group(tpg); 1047 if (ret < 0) 1048 goto out; 1049 } else { 1050 /* 1051 * iscsit_tpg_disable_portal_group() assumes force=1 1052 */ 1053 ret = iscsit_tpg_disable_portal_group(tpg, 1); 1054 if (ret < 0) 1055 goto out; 1056 } 1057 1058 iscsit_put_tpg(tpg); 1059 return count; 1060out: 1061 iscsit_put_tpg(tpg); 1062 return -EINVAL; 1063} 1064 1065 1066static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item, 1067 char *page) 1068{ 1069 return target_show_dynamic_sessions(to_tpg(item), page); 1070} 1071 1072CONFIGFS_ATTR(lio_target_tpg_, enable); 1073CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions); 1074 1075static struct configfs_attribute *lio_target_tpg_attrs[] = { 1076 &lio_target_tpg_attr_enable, 1077 &lio_target_tpg_attr_dynamic_sessions, 1078 NULL, 1079}; 1080 1081/* End items for lio_target_tpg_cit */ 1082 1083/* Start items for lio_target_tiqn_cit */ 1084 1085static struct se_portal_group *lio_target_tiqn_addtpg(struct se_wwn *wwn, 1086 const char *name) 1087{ 1088 struct iscsi_portal_group *tpg; 1089 struct iscsi_tiqn *tiqn; 1090 char *tpgt_str; 1091 int ret; 1092 u16 tpgt; 1093 1094 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1095 /* 1096 * Only tpgt_# directory groups can be created below 1097 * target/iscsi/iqn.superturodiskarry/ 1098 */ 1099 tpgt_str = strstr(name, "tpgt_"); 1100 if (!tpgt_str) { 1101 pr_err("Unable to locate \"tpgt_#\" directory" 1102 " group\n"); 1103 return NULL; 1104 } 1105 tpgt_str += 5; /* Skip ahead of "tpgt_" */ 1106 ret = kstrtou16(tpgt_str, 0, &tpgt); 1107 if (ret) 1108 return NULL; 1109 1110 tpg = iscsit_alloc_portal_group(tiqn, tpgt); 1111 if (!tpg) 1112 return NULL; 1113 1114 ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI); 1115 if (ret < 0) 1116 goto free_out; 1117 1118 ret = iscsit_tpg_add_portal_group(tiqn, tpg); 1119 if (ret != 0) 1120 goto out; 1121 1122 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1123 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n", 1124 name); 1125 return &tpg->tpg_se_tpg; 1126out: 1127 core_tpg_deregister(&tpg->tpg_se_tpg); 1128free_out: 1129 kfree(tpg); 1130 return NULL; 1131} 1132 1133static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg) 1134{ 1135 struct iscsi_portal_group *tpg; 1136 struct iscsi_tiqn *tiqn; 1137 1138 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg); 1139 tiqn = tpg->tpg_tiqn; 1140 /* 1141 * iscsit_tpg_del_portal_group() assumes force=1 1142 */ 1143 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n"); 1144 iscsit_tpg_del_portal_group(tiqn, tpg, 1); 1145} 1146 1147/* End items for lio_target_tiqn_cit */ 1148 1149/* Start LIO-Target TIQN struct contig_item lio_target_cit */ 1150 1151static ssize_t lio_target_wwn_lio_version_show(struct config_item *item, 1152 char *page) 1153{ 1154 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n"); 1155} 1156 1157CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version); 1158 1159static struct configfs_attribute *lio_target_wwn_attrs[] = { 1160 &lio_target_wwn_attr_lio_version, 1161 NULL, 1162}; 1163 1164static struct se_wwn *lio_target_call_coreaddtiqn( 1165 struct target_fabric_configfs *tf, 1166 struct config_group *group, 1167 const char *name) 1168{ 1169 struct iscsi_tiqn *tiqn; 1170 1171 tiqn = iscsit_add_tiqn((unsigned char *)name); 1172 if (IS_ERR(tiqn)) 1173 return ERR_CAST(tiqn); 1174 1175 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1176 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:" 1177 " %s\n", name); 1178 return &tiqn->tiqn_wwn; 1179} 1180 1181static void lio_target_add_wwn_groups(struct se_wwn *wwn) 1182{ 1183 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1184 1185 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group, 1186 "iscsi_instance", &iscsi_stat_instance_cit); 1187 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group, 1188 &tiqn->tiqn_wwn.fabric_stat_group); 1189 1190 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group, 1191 "iscsi_sess_err", &iscsi_stat_sess_err_cit); 1192 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group, 1193 &tiqn->tiqn_wwn.fabric_stat_group); 1194 1195 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group, 1196 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit); 1197 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group, 1198 &tiqn->tiqn_wwn.fabric_stat_group); 1199 1200 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group, 1201 "iscsi_login_stats", &iscsi_stat_login_cit); 1202 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group, 1203 &tiqn->tiqn_wwn.fabric_stat_group); 1204 1205 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group, 1206 "iscsi_logout_stats", &iscsi_stat_logout_cit); 1207 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group, 1208 &tiqn->tiqn_wwn.fabric_stat_group); 1209} 1210 1211static void lio_target_call_coredeltiqn( 1212 struct se_wwn *wwn) 1213{ 1214 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1215 1216 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n", 1217 tiqn->tiqn); 1218 iscsit_del_tiqn(tiqn); 1219} 1220 1221/* End LIO-Target TIQN struct contig_lio_target_cit */ 1222 1223/* Start lio_target_discovery_auth_cit */ 1224 1225#define DEF_DISC_AUTH_STR(name, flags) \ 1226 __DEF_NACL_AUTH_STR(disc, name, flags) \ 1227static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \ 1228{ \ 1229 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\ 1230 page); \ 1231} \ 1232static ssize_t iscsi_disc_##name##_store(struct config_item *item, \ 1233 const char *page, size_t count) \ 1234{ \ 1235 return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl, \ 1236 page, count); \ 1237 \ 1238} \ 1239CONFIGFS_ATTR(iscsi_disc_, name) 1240 1241DEF_DISC_AUTH_STR(userid, NAF_USERID_SET); 1242DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET); 1243DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 1244DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 1245 1246#define DEF_DISC_AUTH_INT(name) \ 1247 __DEF_NACL_AUTH_INT(disc, name) \ 1248static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \ 1249{ \ 1250 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \ 1251 page); \ 1252} \ 1253CONFIGFS_ATTR_RO(iscsi_disc_, name) 1254 1255DEF_DISC_AUTH_INT(authenticate_target); 1256 1257 1258static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item, 1259 char *page) 1260{ 1261 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth; 1262 1263 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth); 1264} 1265 1266static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item, 1267 const char *page, size_t count) 1268{ 1269 struct iscsi_param *param; 1270 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg; 1271 u32 op; 1272 int err; 1273 1274 err = kstrtou32(page, 0, &op); 1275 if (err) 1276 return -EINVAL; 1277 if ((op != 1) && (op != 0)) { 1278 pr_err("Illegal value for enforce_discovery_auth:" 1279 " %u\n", op); 1280 return -EINVAL; 1281 } 1282 1283 if (!discovery_tpg) { 1284 pr_err("iscsit_global->discovery_tpg is NULL\n"); 1285 return -EINVAL; 1286 } 1287 1288 param = iscsi_find_param_from_key(AUTHMETHOD, 1289 discovery_tpg->param_list); 1290 if (!param) 1291 return -EINVAL; 1292 1293 if (op) { 1294 /* 1295 * Reset the AuthMethod key to CHAP. 1296 */ 1297 if (iscsi_update_param_value(param, CHAP) < 0) 1298 return -EINVAL; 1299 1300 discovery_tpg->tpg_attrib.authentication = 1; 1301 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1; 1302 pr_debug("LIO-CORE[0] Successfully enabled" 1303 " authentication enforcement for iSCSI" 1304 " Discovery TPG\n"); 1305 } else { 1306 /* 1307 * Reset the AuthMethod key to CHAP,None 1308 */ 1309 if (iscsi_update_param_value(param, "CHAP,None") < 0) 1310 return -EINVAL; 1311 1312 discovery_tpg->tpg_attrib.authentication = 0; 1313 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0; 1314 pr_debug("LIO-CORE[0] Successfully disabled" 1315 " authentication enforcement for iSCSI" 1316 " Discovery TPG\n"); 1317 } 1318 1319 return count; 1320} 1321 1322CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth); 1323 1324static struct configfs_attribute *lio_target_discovery_auth_attrs[] = { 1325 &iscsi_disc_attr_userid, 1326 &iscsi_disc_attr_password, 1327 &iscsi_disc_attr_authenticate_target, 1328 &iscsi_disc_attr_userid_mutual, 1329 &iscsi_disc_attr_password_mutual, 1330 &iscsi_disc_attr_enforce_discovery_auth, 1331 NULL, 1332}; 1333 1334/* End lio_target_discovery_auth_cit */ 1335 1336/* Start functions for target_core_fabric_ops */ 1337 1338static int iscsi_get_cmd_state(struct se_cmd *se_cmd) 1339{ 1340 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1341 1342 return cmd->i_state; 1343} 1344 1345static u32 lio_sess_get_index(struct se_session *se_sess) 1346{ 1347 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1348 1349 return sess->session_index; 1350} 1351 1352static u32 lio_sess_get_initiator_sid( 1353 struct se_session *se_sess, 1354 unsigned char *buf, 1355 u32 size) 1356{ 1357 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1358 /* 1359 * iSCSI Initiator Session Identifier from RFC-3720. 1360 */ 1361 return snprintf(buf, size, "%6phN", sess->isid); 1362} 1363 1364static int lio_queue_data_in(struct se_cmd *se_cmd) 1365{ 1366 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1367 struct iscsi_conn *conn = cmd->conn; 1368 1369 cmd->i_state = ISTATE_SEND_DATAIN; 1370 return conn->conn_transport->iscsit_queue_data_in(conn, cmd); 1371} 1372 1373static int lio_write_pending(struct se_cmd *se_cmd) 1374{ 1375 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1376 struct iscsi_conn *conn = cmd->conn; 1377 1378 if (!cmd->immediate_data && !cmd->unsolicited_data) 1379 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false); 1380 1381 return 0; 1382} 1383 1384static int lio_queue_status(struct se_cmd *se_cmd) 1385{ 1386 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1387 struct iscsi_conn *conn = cmd->conn; 1388 1389 cmd->i_state = ISTATE_SEND_STATUS; 1390 1391 if (cmd->se_cmd.scsi_status || cmd->sense_reason) { 1392 return iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state); 1393 } 1394 return conn->conn_transport->iscsit_queue_status(conn, cmd); 1395} 1396 1397static void lio_queue_tm_rsp(struct se_cmd *se_cmd) 1398{ 1399 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1400 1401 cmd->i_state = ISTATE_SEND_TASKMGTRSP; 1402 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); 1403} 1404 1405static void lio_aborted_task(struct se_cmd *se_cmd) 1406{ 1407 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1408 1409 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd); 1410} 1411 1412static inline struct iscsi_portal_group *iscsi_tpg(struct se_portal_group *se_tpg) 1413{ 1414 return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg); 1415} 1416 1417static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg) 1418{ 1419 return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn; 1420} 1421 1422static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg) 1423{ 1424 return iscsi_tpg(se_tpg)->tpgt; 1425} 1426 1427static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg) 1428{ 1429 return iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth; 1430} 1431 1432static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg) 1433{ 1434 return iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls; 1435} 1436 1437static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg) 1438{ 1439 return iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls; 1440} 1441 1442static int lio_tpg_check_demo_mode_write_protect( 1443 struct se_portal_group *se_tpg) 1444{ 1445 return iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect; 1446} 1447 1448static int lio_tpg_check_prod_mode_write_protect( 1449 struct se_portal_group *se_tpg) 1450{ 1451 return iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect; 1452} 1453 1454static int lio_tpg_check_prot_fabric_only( 1455 struct se_portal_group *se_tpg) 1456{ 1457 /* 1458 * Only report fabric_prot_type if t10_pi has also been enabled 1459 * for incoming ib_isert sessions. 1460 */ 1461 if (!iscsi_tpg(se_tpg)->tpg_attrib.t10_pi) 1462 return 0; 1463 return iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type; 1464} 1465 1466/* 1467 * This function calls iscsit_inc_session_usage_count() on the 1468 * struct iscsi_session in question. 1469 */ 1470static void lio_tpg_close_session(struct se_session *se_sess) 1471{ 1472 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1473 struct se_portal_group *se_tpg = &sess->tpg->tpg_se_tpg; 1474 1475 spin_lock_bh(&se_tpg->session_lock); 1476 spin_lock(&sess->conn_lock); 1477 if (atomic_read(&sess->session_fall_back_to_erl0) || 1478 atomic_read(&sess->session_logout) || 1479 atomic_read(&sess->session_close) || 1480 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) { 1481 spin_unlock(&sess->conn_lock); 1482 spin_unlock_bh(&se_tpg->session_lock); 1483 return; 1484 } 1485 iscsit_inc_session_usage_count(sess); 1486 atomic_set(&sess->session_reinstatement, 1); 1487 atomic_set(&sess->session_fall_back_to_erl0, 1); 1488 atomic_set(&sess->session_close, 1); 1489 spin_unlock(&sess->conn_lock); 1490 1491 iscsit_stop_time2retain_timer(sess); 1492 spin_unlock_bh(&se_tpg->session_lock); 1493 1494 iscsit_stop_session(sess, 1, 1); 1495 iscsit_dec_session_usage_count(sess); 1496} 1497 1498static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg) 1499{ 1500 return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index; 1501} 1502 1503static void lio_set_default_node_attributes(struct se_node_acl *se_acl) 1504{ 1505 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl, 1506 se_node_acl); 1507 struct se_portal_group *se_tpg = se_acl->se_tpg; 1508 struct iscsi_portal_group *tpg = container_of(se_tpg, 1509 struct iscsi_portal_group, tpg_se_tpg); 1510 1511 acl->node_attrib.nacl = acl; 1512 iscsit_set_default_node_attribues(acl, tpg); 1513} 1514 1515static int lio_check_stop_free(struct se_cmd *se_cmd) 1516{ 1517 return target_put_sess_cmd(se_cmd); 1518} 1519 1520static void lio_release_cmd(struct se_cmd *se_cmd) 1521{ 1522 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1523 1524 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd); 1525 iscsit_release_cmd(cmd); 1526} 1527 1528const struct target_core_fabric_ops iscsi_ops = { 1529 .module = THIS_MODULE, 1530 .fabric_alias = "iscsi", 1531 .fabric_name = "iSCSI", 1532 .node_acl_size = sizeof(struct iscsi_node_acl), 1533 .tpg_get_wwn = lio_tpg_get_endpoint_wwn, 1534 .tpg_get_tag = lio_tpg_get_tag, 1535 .tpg_get_default_depth = lio_tpg_get_default_depth, 1536 .tpg_check_demo_mode = lio_tpg_check_demo_mode, 1537 .tpg_check_demo_mode_cache = lio_tpg_check_demo_mode_cache, 1538 .tpg_check_demo_mode_write_protect = 1539 lio_tpg_check_demo_mode_write_protect, 1540 .tpg_check_prod_mode_write_protect = 1541 lio_tpg_check_prod_mode_write_protect, 1542 .tpg_check_prot_fabric_only = &lio_tpg_check_prot_fabric_only, 1543 .tpg_get_inst_index = lio_tpg_get_inst_index, 1544 .check_stop_free = lio_check_stop_free, 1545 .release_cmd = lio_release_cmd, 1546 .close_session = lio_tpg_close_session, 1547 .sess_get_index = lio_sess_get_index, 1548 .sess_get_initiator_sid = lio_sess_get_initiator_sid, 1549 .write_pending = lio_write_pending, 1550 .set_default_node_attributes = lio_set_default_node_attributes, 1551 .get_cmd_state = iscsi_get_cmd_state, 1552 .queue_data_in = lio_queue_data_in, 1553 .queue_status = lio_queue_status, 1554 .queue_tm_rsp = lio_queue_tm_rsp, 1555 .aborted_task = lio_aborted_task, 1556 .fabric_make_wwn = lio_target_call_coreaddtiqn, 1557 .fabric_drop_wwn = lio_target_call_coredeltiqn, 1558 .add_wwn_groups = lio_target_add_wwn_groups, 1559 .fabric_make_tpg = lio_target_tiqn_addtpg, 1560 .fabric_drop_tpg = lio_target_tiqn_deltpg, 1561 .fabric_make_np = lio_target_call_addnptotpg, 1562 .fabric_drop_np = lio_target_call_delnpfromtpg, 1563 .fabric_init_nodeacl = lio_target_init_nodeacl, 1564 1565 .tfc_discovery_attrs = lio_target_discovery_auth_attrs, 1566 .tfc_wwn_attrs = lio_target_wwn_attrs, 1567 .tfc_tpg_base_attrs = lio_target_tpg_attrs, 1568 .tfc_tpg_attrib_attrs = lio_target_tpg_attrib_attrs, 1569 .tfc_tpg_auth_attrs = lio_target_tpg_auth_attrs, 1570 .tfc_tpg_param_attrs = lio_target_tpg_param_attrs, 1571 .tfc_tpg_np_base_attrs = lio_target_portal_attrs, 1572 .tfc_tpg_nacl_base_attrs = lio_target_initiator_attrs, 1573 .tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs, 1574 .tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs, 1575 .tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs, 1576 1577 .write_pending_must_be_called = true, 1578}; 1579