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1// SPDX-License-Identifier: GPL-2.0-or-later2/*******************************************************************************3 * This file contains the configfs implementation for iSCSI Target mode4 * 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 = sysfs_emit(page, "1\n");49 else50 rb = sysfs_emit(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 256153 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 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);172 173 str = strstr(buf, "[");174 if (str) {175 str2 = strstr(str, "]");176 if (!str2) {177 pr_err("Unable to locate trailing \"]\""178 " in IPv6 iSCSI network portal address\n");179 return ERR_PTR(-EINVAL);180 }181 182 ip_str = str + 1; /* Skip over leading "[" */183 *str2 = '\0'; /* Terminate the unbracketed IPv6 address */184 str2++; /* Skip over the \0 */185 186 port_str = strstr(str2, ":");187 if (!port_str) {188 pr_err("Unable to locate \":port\""189 " in IPv6 iSCSI network portal address\n");190 return ERR_PTR(-EINVAL);191 }192 *port_str = '\0'; /* Terminate string for IP */193 port_str++; /* Skip over ":" */194 } else {195 ip_str = &buf[0];196 port_str = strstr(ip_str, ":");197 if (!port_str) {198 pr_err("Unable to locate \":port\""199 " in IPv4 iSCSI network portal address\n");200 return ERR_PTR(-EINVAL);201 }202 *port_str = '\0'; /* Terminate string for IP */203 port_str++; /* Skip over ":" */204 }205 206 ret = inet_pton_with_scope(&init_net, AF_UNSPEC, ip_str,207 port_str, &sockaddr);208 if (ret) {209 pr_err("malformed ip/port passed: %s\n", name);210 return ERR_PTR(ret);211 }212 213 tpg = to_iscsi_tpg(se_tpg);214 ret = iscsit_get_tpg(tpg);215 if (ret < 0)216 return ERR_PTR(-EINVAL);217 218 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"219 " PORTAL: %s\n",220 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),221 tpg->tpgt, name);222 /*223 * Assume ISCSI_TCP by default. Other network portals for other224 * iSCSI fabrics:225 *226 * Traditional iSCSI over SCTP (initial support)227 * iSER/TCP (TODO, hardware available)228 * iSER/SCTP (TODO, software emulation with osc-iwarp)229 * iSER/IB (TODO, hardware available)230 *231 * can be enabled with attributes under232 * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/233 *234 */235 tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL,236 ISCSI_TCP);237 if (IS_ERR(tpg_np)) {238 iscsit_put_tpg(tpg);239 return ERR_CAST(tpg_np);240 }241 pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");242 243 iscsit_put_tpg(tpg);244 return &tpg_np->se_tpg_np;245}246 247static void lio_target_call_delnpfromtpg(248 struct se_tpg_np *se_tpg_np)249{250 struct iscsi_portal_group *tpg;251 struct iscsi_tpg_np *tpg_np;252 struct se_portal_group *se_tpg;253 int ret;254 255 tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);256 tpg = tpg_np->tpg;257 ret = iscsit_get_tpg(tpg);258 if (ret < 0)259 return;260 261 se_tpg = &tpg->tpg_se_tpg;262 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"263 " PORTAL: %pISpc\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),264 tpg->tpgt, &tpg_np->tpg_np->np_sockaddr);265 266 ret = iscsit_tpg_del_network_portal(tpg, tpg_np);267 if (ret < 0)268 goto out;269 270 pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");271out:272 iscsit_put_tpg(tpg);273}274 275/* End items for lio_target_np_cit */276 277/* Start items for lio_target_nacl_attrib_cit */278 279#define ISCSI_NACL_ATTR(name) \280static ssize_t iscsi_nacl_attrib_##name##_show(struct config_item *item,\281 char *page) \282{ \283 struct se_node_acl *se_nacl = attrib_to_nacl(item); \284 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl); \285 return sysfs_emit(page, "%u\n", nacl->node_attrib.name); \286} \287 \288static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\289 const char *page, size_t count) \290{ \291 struct se_node_acl *se_nacl = attrib_to_nacl(item); \292 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl); \293 u32 val; \294 int ret; \295 \296 ret = kstrtou32(page, 0, &val); \297 if (ret) \298 return ret; \299 ret = iscsit_na_##name(nacl, val); \300 if (ret < 0) \301 return ret; \302 \303 return count; \304} \305 \306CONFIGFS_ATTR(iscsi_nacl_attrib_, name)307 308ISCSI_NACL_ATTR(dataout_timeout);309ISCSI_NACL_ATTR(dataout_timeout_retries);310ISCSI_NACL_ATTR(default_erl);311ISCSI_NACL_ATTR(nopin_timeout);312ISCSI_NACL_ATTR(nopin_response_timeout);313ISCSI_NACL_ATTR(random_datain_pdu_offsets);314ISCSI_NACL_ATTR(random_datain_seq_offsets);315ISCSI_NACL_ATTR(random_r2t_offsets);316 317static ssize_t iscsi_nacl_attrib_authentication_show(struct config_item *item,318 char *page)319{320 struct se_node_acl *se_nacl = attrib_to_nacl(item);321 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl);322 323 return sysfs_emit(page, "%d\n", nacl->node_attrib.authentication);324}325 326static ssize_t iscsi_nacl_attrib_authentication_store(struct config_item *item,327 const char *page, size_t count)328{329 struct se_node_acl *se_nacl = attrib_to_nacl(item);330 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl);331 s32 val;332 int ret;333 334 ret = kstrtos32(page, 0, &val);335 if (ret)336 return ret;337 if (val != 0 && val != 1 && val != NA_AUTHENTICATION_INHERITED)338 return -EINVAL;339 340 nacl->node_attrib.authentication = val;341 342 return count;343}344 345CONFIGFS_ATTR(iscsi_nacl_attrib_, authentication);346 347static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {348 &iscsi_nacl_attrib_attr_dataout_timeout,349 &iscsi_nacl_attrib_attr_dataout_timeout_retries,350 &iscsi_nacl_attrib_attr_default_erl,351 &iscsi_nacl_attrib_attr_nopin_timeout,352 &iscsi_nacl_attrib_attr_nopin_response_timeout,353 &iscsi_nacl_attrib_attr_random_datain_pdu_offsets,354 &iscsi_nacl_attrib_attr_random_datain_seq_offsets,355 &iscsi_nacl_attrib_attr_random_r2t_offsets,356 &iscsi_nacl_attrib_attr_authentication,357 NULL,358};359 360/* End items for lio_target_nacl_attrib_cit */361 362/* Start items for lio_target_nacl_auth_cit */363 364#define __DEF_NACL_AUTH_STR(prefix, name, flags) \365static ssize_t __iscsi_##prefix##_##name##_show( \366 struct iscsi_node_acl *nacl, \367 char *page) \368{ \369 struct iscsi_node_auth *auth = &nacl->node_auth; \370 \371 if (!capable(CAP_SYS_ADMIN)) \372 return -EPERM; \373 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \374} \375 \376static ssize_t __iscsi_##prefix##_##name##_store( \377 struct iscsi_node_acl *nacl, \378 const char *page, \379 size_t count) \380{ \381 struct iscsi_node_auth *auth = &nacl->node_auth; \382 \383 if (!capable(CAP_SYS_ADMIN)) \384 return -EPERM; \385 if (count >= sizeof(auth->name)) \386 return -EINVAL; \387 snprintf(auth->name, sizeof(auth->name), "%s", page); \388 if (!strncmp("NULL", auth->name, 4)) \389 auth->naf_flags &= ~flags; \390 else \391 auth->naf_flags |= flags; \392 \393 if ((auth->naf_flags & NAF_USERID_IN_SET) && \394 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \395 auth->authenticate_target = 1; \396 else \397 auth->authenticate_target = 0; \398 \399 return count; \400}401 402#define DEF_NACL_AUTH_STR(name, flags) \403 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \404static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \405 char *page) \406{ \407 struct se_node_acl *nacl = auth_to_nacl(item); \408 return __iscsi_nacl_auth_##name##_show(to_iscsi_nacl(nacl), page); \409} \410static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \411 const char *page, size_t count) \412{ \413 struct se_node_acl *nacl = auth_to_nacl(item); \414 return __iscsi_nacl_auth_##name##_store(to_iscsi_nacl(nacl), \415 page, count); \416} \417 \418CONFIGFS_ATTR(iscsi_nacl_auth_, name)419 420/*421 * One-way authentication userid422 */423DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);424DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);425DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);426DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);427 428#define __DEF_NACL_AUTH_INT(prefix, name) \429static ssize_t __iscsi_##prefix##_##name##_show( \430 struct iscsi_node_acl *nacl, \431 char *page) \432{ \433 struct iscsi_node_auth *auth = &nacl->node_auth; \434 \435 if (!capable(CAP_SYS_ADMIN)) \436 return -EPERM; \437 \438 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \439}440 441#define DEF_NACL_AUTH_INT(name) \442 __DEF_NACL_AUTH_INT(nacl_auth, name) \443static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \444 char *page) \445{ \446 struct se_node_acl *nacl = auth_to_nacl(item); \447 return __iscsi_nacl_auth_##name##_show(to_iscsi_nacl(nacl), page); \448} \449 \450CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name)451 452DEF_NACL_AUTH_INT(authenticate_target);453 454static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {455 &iscsi_nacl_auth_attr_userid,456 &iscsi_nacl_auth_attr_password,457 &iscsi_nacl_auth_attr_authenticate_target,458 &iscsi_nacl_auth_attr_userid_mutual,459 &iscsi_nacl_auth_attr_password_mutual,460 NULL,461};462 463/* End items for lio_target_nacl_auth_cit */464 465/* Start items for lio_target_nacl_param_cit */466 467#define ISCSI_NACL_PARAM(name) \468static ssize_t iscsi_nacl_param_##name##_show(struct config_item *item, \469 char *page) \470{ \471 struct se_node_acl *se_nacl = param_to_nacl(item); \472 struct iscsit_session *sess; \473 struct se_session *se_sess; \474 ssize_t rb; \475 \476 spin_lock_bh(&se_nacl->nacl_sess_lock); \477 se_sess = se_nacl->nacl_sess; \478 if (!se_sess) { \479 rb = snprintf(page, PAGE_SIZE, \480 "No Active iSCSI Session\n"); \481 } else { \482 sess = se_sess->fabric_sess_ptr; \483 rb = snprintf(page, PAGE_SIZE, "%u\n", \484 (u32)sess->sess_ops->name); \485 } \486 spin_unlock_bh(&se_nacl->nacl_sess_lock); \487 \488 return rb; \489} \490 \491CONFIGFS_ATTR_RO(iscsi_nacl_param_, name)492 493ISCSI_NACL_PARAM(MaxConnections);494ISCSI_NACL_PARAM(InitialR2T);495ISCSI_NACL_PARAM(ImmediateData);496ISCSI_NACL_PARAM(MaxBurstLength);497ISCSI_NACL_PARAM(FirstBurstLength);498ISCSI_NACL_PARAM(DefaultTime2Wait);499ISCSI_NACL_PARAM(DefaultTime2Retain);500ISCSI_NACL_PARAM(MaxOutstandingR2T);501ISCSI_NACL_PARAM(DataPDUInOrder);502ISCSI_NACL_PARAM(DataSequenceInOrder);503ISCSI_NACL_PARAM(ErrorRecoveryLevel);504 505static struct configfs_attribute *lio_target_nacl_param_attrs[] = {506 &iscsi_nacl_param_attr_MaxConnections,507 &iscsi_nacl_param_attr_InitialR2T,508 &iscsi_nacl_param_attr_ImmediateData,509 &iscsi_nacl_param_attr_MaxBurstLength,510 &iscsi_nacl_param_attr_FirstBurstLength,511 &iscsi_nacl_param_attr_DefaultTime2Wait,512 &iscsi_nacl_param_attr_DefaultTime2Retain,513 &iscsi_nacl_param_attr_MaxOutstandingR2T,514 &iscsi_nacl_param_attr_DataPDUInOrder,515 &iscsi_nacl_param_attr_DataSequenceInOrder,516 &iscsi_nacl_param_attr_ErrorRecoveryLevel,517 NULL,518};519 520/* End items for lio_target_nacl_param_cit */521 522/* Start items for lio_target_acl_cit */523 524static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page)525{526 struct se_node_acl *se_nacl = acl_to_nacl(item);527 struct iscsit_session *sess;528 struct iscsit_conn *conn;529 struct se_session *se_sess;530 ssize_t rb = 0;531 u32 max_cmd_sn;532 533 spin_lock_bh(&se_nacl->nacl_sess_lock);534 se_sess = se_nacl->nacl_sess;535 if (!se_sess) {536 rb += sysfs_emit_at(page, rb, "No active iSCSI Session for Initiator"537 " Endpoint: %s\n", se_nacl->initiatorname);538 } else {539 sess = se_sess->fabric_sess_ptr;540 541 rb += sysfs_emit_at(page, rb, "InitiatorName: %s\n",542 sess->sess_ops->InitiatorName);543 rb += sysfs_emit_at(page, rb, "InitiatorAlias: %s\n",544 sess->sess_ops->InitiatorAlias);545 546 rb += sysfs_emit_at(page, rb,547 "LIO Session ID: %u ISID: 0x%6ph TSIH: %hu ",548 sess->sid, sess->isid, sess->tsih);549 rb += sysfs_emit_at(page, rb, "SessionType: %s\n",550 (sess->sess_ops->SessionType) ?551 "Discovery" : "Normal");552 rb += sysfs_emit_at(page, rb, "Session State: ");553 switch (sess->session_state) {554 case TARG_SESS_STATE_FREE:555 rb += sysfs_emit_at(page, rb, "TARG_SESS_FREE\n");556 break;557 case TARG_SESS_STATE_ACTIVE:558 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_ACTIVE\n");559 break;560 case TARG_SESS_STATE_LOGGED_IN:561 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_LOGGED_IN\n");562 break;563 case TARG_SESS_STATE_FAILED:564 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_FAILED\n");565 break;566 case TARG_SESS_STATE_IN_CONTINUE:567 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_IN_CONTINUE\n");568 break;569 default:570 rb += sysfs_emit_at(page, rb, "ERROR: Unknown Session"571 " State!\n");572 break;573 }574 575 rb += sysfs_emit_at(page, rb, "---------------------[iSCSI Session"576 " Values]-----------------------\n");577 rb += sysfs_emit_at(page, rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"578 " : MaxCmdSN : ITT : TTT\n");579 max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn);580 rb += sysfs_emit_at(page, rb, " 0x%08x 0x%08x 0x%08x 0x%08x"581 " 0x%08x 0x%08x\n",582 sess->cmdsn_window,583 (max_cmd_sn - sess->exp_cmd_sn) + 1,584 sess->exp_cmd_sn, max_cmd_sn,585 sess->init_task_tag, sess->targ_xfer_tag);586 rb += sysfs_emit_at(page, rb, "----------------------[iSCSI"587 " Connections]-------------------------\n");588 589 spin_lock(&sess->conn_lock);590 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {591 rb += sysfs_emit_at(page, rb, "CID: %hu Connection"592 " State: ", conn->cid);593 switch (conn->conn_state) {594 case TARG_CONN_STATE_FREE:595 rb += sysfs_emit_at(page, rb,596 "TARG_CONN_STATE_FREE\n");597 break;598 case TARG_CONN_STATE_XPT_UP:599 rb += sysfs_emit_at(page, rb,600 "TARG_CONN_STATE_XPT_UP\n");601 break;602 case TARG_CONN_STATE_IN_LOGIN:603 rb += sysfs_emit_at(page, rb,604 "TARG_CONN_STATE_IN_LOGIN\n");605 break;606 case TARG_CONN_STATE_LOGGED_IN:607 rb += sysfs_emit_at(page, rb,608 "TARG_CONN_STATE_LOGGED_IN\n");609 break;610 case TARG_CONN_STATE_IN_LOGOUT:611 rb += sysfs_emit_at(page, rb,612 "TARG_CONN_STATE_IN_LOGOUT\n");613 break;614 case TARG_CONN_STATE_LOGOUT_REQUESTED:615 rb += sysfs_emit_at(page, rb,616 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");617 break;618 case TARG_CONN_STATE_CLEANUP_WAIT:619 rb += sysfs_emit_at(page, rb,620 "TARG_CONN_STATE_CLEANUP_WAIT\n");621 break;622 default:623 rb += sysfs_emit_at(page, rb,624 "ERROR: Unknown Connection State!\n");625 break;626 }627 628 rb += sysfs_emit_at(page, rb, " Address %pISc %s", &conn->login_sockaddr,629 (conn->network_transport == ISCSI_TCP) ?630 "TCP" : "SCTP");631 rb += sysfs_emit_at(page, rb, " StatSN: 0x%08x\n",632 conn->stat_sn);633 }634 spin_unlock(&sess->conn_lock);635 }636 spin_unlock_bh(&se_nacl->nacl_sess_lock);637 638 return rb;639}640 641static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item,642 char *page)643{644 return sysfs_emit(page, "%u\n", acl_to_nacl(item)->queue_depth);645}646 647static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item,648 const char *page, size_t count)649{650 struct se_node_acl *se_nacl = acl_to_nacl(item);651 struct se_portal_group *se_tpg = se_nacl->se_tpg;652 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);653 struct config_item *acl_ci, *tpg_ci, *wwn_ci;654 u32 cmdsn_depth = 0;655 int ret;656 657 ret = kstrtou32(page, 0, &cmdsn_depth);658 if (ret)659 return ret;660 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {661 pr_err("Passed cmdsn_depth: %u exceeds"662 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,663 TA_DEFAULT_CMDSN_DEPTH_MAX);664 return -EINVAL;665 }666 acl_ci = &se_nacl->acl_group.cg_item;667 if (!acl_ci) {668 pr_err("Unable to locatel acl_ci\n");669 return -EINVAL;670 }671 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;672 if (!tpg_ci) {673 pr_err("Unable to locate tpg_ci\n");674 return -EINVAL;675 }676 wwn_ci = &tpg_ci->ci_group->cg_item;677 if (!wwn_ci) {678 pr_err("Unable to locate config_item wwn_ci\n");679 return -EINVAL;680 }681 682 if (iscsit_get_tpg(tpg) < 0)683 return -EINVAL;684 685 ret = core_tpg_set_initiator_node_queue_depth(se_nacl, cmdsn_depth);686 687 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"688 "InitiatorName: %s\n", config_item_name(wwn_ci),689 config_item_name(tpg_ci), cmdsn_depth,690 config_item_name(acl_ci));691 692 iscsit_put_tpg(tpg);693 return (!ret) ? count : (ssize_t)ret;694}695 696static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page)697{698 return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag);699}700 701static ssize_t lio_target_nacl_tag_store(struct config_item *item,702 const char *page, size_t count)703{704 struct se_node_acl *se_nacl = acl_to_nacl(item);705 int ret;706 707 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);708 709 if (ret < 0)710 return ret;711 return count;712}713 714CONFIGFS_ATTR_RO(lio_target_nacl_, info);715CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth);716CONFIGFS_ATTR(lio_target_nacl_, tag);717 718static struct configfs_attribute *lio_target_initiator_attrs[] = {719 &lio_target_nacl_attr_info,720 &lio_target_nacl_attr_cmdsn_depth,721 &lio_target_nacl_attr_tag,722 NULL,723};724 725static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,726 const char *name)727{728 struct iscsi_node_acl *acl = to_iscsi_nacl(se_nacl);729 730 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,731 "iscsi_sess_stats", &iscsi_stat_sess_cit);732 configfs_add_default_group(&acl->node_stat_grps.iscsi_sess_stats_group,733 &se_nacl->acl_fabric_stat_group);734 return 0;735}736 737/* End items for lio_target_acl_cit */738 739/* Start items for lio_target_tpg_attrib_cit */740 741#define DEF_TPG_ATTRIB(name) \742 \743static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \744 char *page) \745{ \746 struct se_portal_group *se_tpg = attrib_to_tpg(item); \747 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \748 ssize_t rb; \749 \750 if (iscsit_get_tpg(tpg) < 0) \751 return -EINVAL; \752 \753 rb = sysfs_emit(page, "%u\n", tpg->tpg_attrib.name); \754 iscsit_put_tpg(tpg); \755 return rb; \756} \757 \758static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\759 const char *page, size_t count) \760{ \761 struct se_portal_group *se_tpg = attrib_to_tpg(item); \762 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \763 u32 val; \764 int ret; \765 \766 if (iscsit_get_tpg(tpg) < 0) \767 return -EINVAL; \768 \769 ret = kstrtou32(page, 0, &val); \770 if (ret) \771 goto out; \772 ret = iscsit_ta_##name(tpg, val); \773 if (ret < 0) \774 goto out; \775 \776 iscsit_put_tpg(tpg); \777 return count; \778out: \779 iscsit_put_tpg(tpg); \780 return ret; \781} \782CONFIGFS_ATTR(iscsi_tpg_attrib_, name)783 784DEF_TPG_ATTRIB(authentication);785DEF_TPG_ATTRIB(login_timeout);786DEF_TPG_ATTRIB(generate_node_acls);787DEF_TPG_ATTRIB(default_cmdsn_depth);788DEF_TPG_ATTRIB(cache_dynamic_acls);789DEF_TPG_ATTRIB(demo_mode_write_protect);790DEF_TPG_ATTRIB(prod_mode_write_protect);791DEF_TPG_ATTRIB(demo_mode_discovery);792DEF_TPG_ATTRIB(default_erl);793DEF_TPG_ATTRIB(t10_pi);794DEF_TPG_ATTRIB(fabric_prot_type);795DEF_TPG_ATTRIB(tpg_enabled_sendtargets);796DEF_TPG_ATTRIB(login_keys_workaround);797 798static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {799 &iscsi_tpg_attrib_attr_authentication,800 &iscsi_tpg_attrib_attr_login_timeout,801 &iscsi_tpg_attrib_attr_generate_node_acls,802 &iscsi_tpg_attrib_attr_default_cmdsn_depth,803 &iscsi_tpg_attrib_attr_cache_dynamic_acls,804 &iscsi_tpg_attrib_attr_demo_mode_write_protect,805 &iscsi_tpg_attrib_attr_prod_mode_write_protect,806 &iscsi_tpg_attrib_attr_demo_mode_discovery,807 &iscsi_tpg_attrib_attr_default_erl,808 &iscsi_tpg_attrib_attr_t10_pi,809 &iscsi_tpg_attrib_attr_fabric_prot_type,810 &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets,811 &iscsi_tpg_attrib_attr_login_keys_workaround,812 NULL,813};814 815/* End items for lio_target_tpg_attrib_cit */816 817/* Start items for lio_target_tpg_auth_cit */818 819#define __DEF_TPG_AUTH_STR(prefix, name, flags) \820static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \821 char *page) \822{ \823 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \824 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \825 \826 if (!capable(CAP_SYS_ADMIN)) \827 return -EPERM; \828 \829 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \830} \831 \832static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\833 const char *page, size_t count) \834{ \835 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \836 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \837 \838 if (!capable(CAP_SYS_ADMIN)) \839 return -EPERM; \840 \841 snprintf(auth->name, sizeof(auth->name), "%s", page); \842 if (!(strncmp("NULL", auth->name, 4))) \843 auth->naf_flags &= ~flags; \844 else \845 auth->naf_flags |= flags; \846 \847 if ((auth->naf_flags & NAF_USERID_IN_SET) && \848 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \849 auth->authenticate_target = 1; \850 else \851 auth->authenticate_target = 0; \852 \853 return count; \854}855 856#define DEF_TPG_AUTH_STR(name, flags) \857 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \858static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \859 char *page) \860{ \861 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \862} \863 \864static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item, \865 const char *page, size_t count) \866{ \867 return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \868} \869 \870CONFIGFS_ATTR(iscsi_tpg_auth_, name);871 872 873DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);874DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);875DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);876DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);877 878#define __DEF_TPG_AUTH_INT(prefix, name) \879static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \880 char *page) \881{ \882 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \883 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \884 \885 if (!capable(CAP_SYS_ADMIN)) \886 return -EPERM; \887 \888 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \889}890 891#define DEF_TPG_AUTH_INT(name) \892 __DEF_TPG_AUTH_INT(tpg_auth, name) \893static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \894 char *page) \895{ \896 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \897} \898CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name);899 900DEF_TPG_AUTH_INT(authenticate_target);901 902static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {903 &iscsi_tpg_auth_attr_userid,904 &iscsi_tpg_auth_attr_password,905 &iscsi_tpg_auth_attr_authenticate_target,906 &iscsi_tpg_auth_attr_userid_mutual,907 &iscsi_tpg_auth_attr_password_mutual,908 NULL,909};910 911/* End items for lio_target_tpg_auth_cit */912 913/* Start items for lio_target_tpg_param_cit */914 915#define DEF_TPG_PARAM(name) \916static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item, \917 char *page) \918{ \919 struct se_portal_group *se_tpg = param_to_tpg(item); \920 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \921 struct iscsi_param *param; \922 ssize_t rb; \923 \924 if (iscsit_get_tpg(tpg) < 0) \925 return -EINVAL; \926 \927 param = iscsi_find_param_from_key(__stringify(name), \928 tpg->param_list); \929 if (!param) { \930 iscsit_put_tpg(tpg); \931 return -EINVAL; \932 } \933 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \934 \935 iscsit_put_tpg(tpg); \936 return rb; \937} \938static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \939 const char *page, size_t count) \940{ \941 struct se_portal_group *se_tpg = param_to_tpg(item); \942 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \943 char *buf; \944 int ret, len; \945 \946 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \947 if (!buf) \948 return -ENOMEM; \949 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \950 if (isspace(buf[len-1])) \951 buf[len-1] = '\0'; /* Kill newline */ \952 \953 if (iscsit_get_tpg(tpg) < 0) { \954 kfree(buf); \955 return -EINVAL; \956 } \957 \958 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \959 if (ret < 0) \960 goto out; \961 \962 kfree(buf); \963 iscsit_put_tpg(tpg); \964 return count; \965out: \966 kfree(buf); \967 iscsit_put_tpg(tpg); \968 return -EINVAL; \969} \970CONFIGFS_ATTR(iscsi_tpg_param_, name)971 972DEF_TPG_PARAM(AuthMethod);973DEF_TPG_PARAM(HeaderDigest);974DEF_TPG_PARAM(DataDigest);975DEF_TPG_PARAM(MaxConnections);976DEF_TPG_PARAM(TargetAlias);977DEF_TPG_PARAM(InitialR2T);978DEF_TPG_PARAM(ImmediateData);979DEF_TPG_PARAM(MaxRecvDataSegmentLength);980DEF_TPG_PARAM(MaxXmitDataSegmentLength);981DEF_TPG_PARAM(MaxBurstLength);982DEF_TPG_PARAM(FirstBurstLength);983DEF_TPG_PARAM(DefaultTime2Wait);984DEF_TPG_PARAM(DefaultTime2Retain);985DEF_TPG_PARAM(MaxOutstandingR2T);986DEF_TPG_PARAM(DataPDUInOrder);987DEF_TPG_PARAM(DataSequenceInOrder);988DEF_TPG_PARAM(ErrorRecoveryLevel);989DEF_TPG_PARAM(IFMarker);990DEF_TPG_PARAM(OFMarker);991DEF_TPG_PARAM(IFMarkInt);992DEF_TPG_PARAM(OFMarkInt);993 994static struct configfs_attribute *lio_target_tpg_param_attrs[] = {995 &iscsi_tpg_param_attr_AuthMethod,996 &iscsi_tpg_param_attr_HeaderDigest,997 &iscsi_tpg_param_attr_DataDigest,998 &iscsi_tpg_param_attr_MaxConnections,999 &iscsi_tpg_param_attr_TargetAlias,1000 &iscsi_tpg_param_attr_InitialR2T,1001 &iscsi_tpg_param_attr_ImmediateData,1002 &iscsi_tpg_param_attr_MaxRecvDataSegmentLength,1003 &iscsi_tpg_param_attr_MaxXmitDataSegmentLength,1004 &iscsi_tpg_param_attr_MaxBurstLength,1005 &iscsi_tpg_param_attr_FirstBurstLength,1006 &iscsi_tpg_param_attr_DefaultTime2Wait,1007 &iscsi_tpg_param_attr_DefaultTime2Retain,1008 &iscsi_tpg_param_attr_MaxOutstandingR2T,1009 &iscsi_tpg_param_attr_DataPDUInOrder,1010 &iscsi_tpg_param_attr_DataSequenceInOrder,1011 &iscsi_tpg_param_attr_ErrorRecoveryLevel,1012 &iscsi_tpg_param_attr_IFMarker,1013 &iscsi_tpg_param_attr_OFMarker,1014 &iscsi_tpg_param_attr_IFMarkInt,1015 &iscsi_tpg_param_attr_OFMarkInt,1016 NULL,1017};1018 1019/* End items for lio_target_tpg_param_cit */1020 1021/* Start items for lio_target_tpg_cit */1022 1023static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item,1024 char *page)1025{1026 return target_show_dynamic_sessions(to_tpg(item), page);1027}1028 1029CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions);1030 1031static struct configfs_attribute *lio_target_tpg_attrs[] = {1032 &lio_target_tpg_attr_dynamic_sessions,1033 NULL,1034};1035 1036/* End items for lio_target_tpg_cit */1037 1038/* Start items for lio_target_tiqn_cit */1039 1040static struct se_portal_group *lio_target_tiqn_addtpg(struct se_wwn *wwn,1041 const char *name)1042{1043 struct iscsi_portal_group *tpg;1044 struct iscsi_tiqn *tiqn;1045 char *tpgt_str;1046 int ret;1047 u16 tpgt;1048 1049 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);1050 /*1051 * Only tpgt_# directory groups can be created below1052 * target/iscsi/iqn.superturodiskarry/1053 */1054 tpgt_str = strstr(name, "tpgt_");1055 if (!tpgt_str) {1056 pr_err("Unable to locate \"tpgt_#\" directory"1057 " group\n");1058 return NULL;1059 }1060 tpgt_str += 5; /* Skip ahead of "tpgt_" */1061 ret = kstrtou16(tpgt_str, 0, &tpgt);1062 if (ret)1063 return NULL;1064 1065 tpg = iscsit_alloc_portal_group(tiqn, tpgt);1066 if (!tpg)1067 return NULL;1068 1069 ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);1070 if (ret < 0)1071 goto free_out;1072 1073 ret = iscsit_tpg_add_portal_group(tiqn, tpg);1074 if (ret != 0)1075 goto out;1076 1077 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);1078 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",1079 name);1080 return &tpg->tpg_se_tpg;1081out:1082 core_tpg_deregister(&tpg->tpg_se_tpg);1083free_out:1084 kfree(tpg);1085 return NULL;1086}1087 1088static int lio_target_tiqn_enabletpg(struct se_portal_group *se_tpg,1089 bool enable)1090{1091 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);1092 int ret;1093 1094 ret = iscsit_get_tpg(tpg);1095 if (ret < 0)1096 return -EINVAL;1097 1098 if (enable) {1099 ret = iscsit_tpg_enable_portal_group(tpg);1100 if (ret < 0)1101 goto out;1102 } else {1103 /*1104 * iscsit_tpg_disable_portal_group() assumes force=11105 */1106 ret = iscsit_tpg_disable_portal_group(tpg, 1);1107 if (ret < 0)1108 goto out;1109 }1110 1111 iscsit_put_tpg(tpg);1112 return 0;1113out:1114 iscsit_put_tpg(tpg);1115 return -EINVAL;1116}1117 1118static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)1119{1120 struct iscsi_portal_group *tpg;1121 struct iscsi_tiqn *tiqn;1122 1123 tpg = to_iscsi_tpg(se_tpg);1124 tiqn = tpg->tpg_tiqn;1125 /*1126 * iscsit_tpg_del_portal_group() assumes force=11127 */1128 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");1129 iscsit_tpg_del_portal_group(tiqn, tpg, 1);1130}1131 1132/* End items for lio_target_tiqn_cit */1133 1134/* Start LIO-Target TIQN struct contig_item lio_target_cit */1135 1136static ssize_t lio_target_wwn_lio_version_show(struct config_item *item,1137 char *page)1138{1139 return sysfs_emit(page, "Datera Inc. iSCSI Target %s\n", ISCSIT_VERSION);1140}1141 1142CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version);1143 1144static ssize_t lio_target_wwn_cpus_allowed_list_show(1145 struct config_item *item, char *page)1146{1147 return sysfs_emit(page, "%*pbl\n",1148 cpumask_pr_args(iscsit_global->allowed_cpumask));1149}1150 1151static ssize_t lio_target_wwn_cpus_allowed_list_store(1152 struct config_item *item, const char *page, size_t count)1153{1154 int ret = -ENOMEM;1155 char *orig;1156 cpumask_var_t new_allowed_cpumask;1157 1158 if (!zalloc_cpumask_var(&new_allowed_cpumask, GFP_KERNEL))1159 goto out;1160 1161 orig = kstrdup(page, GFP_KERNEL);1162 if (!orig)1163 goto out_free_cpumask;1164 1165 ret = cpulist_parse(orig, new_allowed_cpumask);1166 if (!ret)1167 cpumask_copy(iscsit_global->allowed_cpumask,1168 new_allowed_cpumask);1169 1170 kfree(orig);1171out_free_cpumask:1172 free_cpumask_var(new_allowed_cpumask);1173out:1174 return ret ? ret : count;1175}1176 1177CONFIGFS_ATTR(lio_target_wwn_, cpus_allowed_list);1178 1179static struct configfs_attribute *lio_target_wwn_attrs[] = {1180 &lio_target_wwn_attr_lio_version,1181 &lio_target_wwn_attr_cpus_allowed_list,1182 NULL,1183};1184 1185static struct se_wwn *lio_target_call_coreaddtiqn(1186 struct target_fabric_configfs *tf,1187 struct config_group *group,1188 const char *name)1189{1190 struct iscsi_tiqn *tiqn;1191 1192 tiqn = iscsit_add_tiqn((unsigned char *)name);1193 if (IS_ERR(tiqn))1194 return ERR_CAST(tiqn);1195 1196 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);1197 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"1198 " %s\n", name);1199 return &tiqn->tiqn_wwn;1200}1201 1202static void lio_target_add_wwn_groups(struct se_wwn *wwn)1203{1204 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);1205 1206 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,1207 "iscsi_instance", &iscsi_stat_instance_cit);1208 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group,1209 &tiqn->tiqn_wwn.fabric_stat_group);1210 1211 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,1212 "iscsi_sess_err", &iscsi_stat_sess_err_cit);1213 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,1214 &tiqn->tiqn_wwn.fabric_stat_group);1215 1216 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,1217 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);1218 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,1219 &tiqn->tiqn_wwn.fabric_stat_group);1220 1221 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,1222 "iscsi_login_stats", &iscsi_stat_login_cit);1223 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,1224 &tiqn->tiqn_wwn.fabric_stat_group);1225 1226 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,1227 "iscsi_logout_stats", &iscsi_stat_logout_cit);1228 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,1229 &tiqn->tiqn_wwn.fabric_stat_group);1230}1231 1232static void lio_target_call_coredeltiqn(1233 struct se_wwn *wwn)1234{1235 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);1236 1237 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",1238 tiqn->tiqn);1239 iscsit_del_tiqn(tiqn);1240}1241 1242/* End LIO-Target TIQN struct contig_lio_target_cit */1243 1244/* Start lio_target_discovery_auth_cit */1245 1246#define DEF_DISC_AUTH_STR(name, flags) \1247 __DEF_NACL_AUTH_STR(disc, name, flags) \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} \1253static ssize_t iscsi_disc_##name##_store(struct config_item *item, \1254 const char *page, size_t count) \1255{ \1256 return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl, \1257 page, count); \1258 \1259} \1260CONFIGFS_ATTR(iscsi_disc_, name)1261 1262DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);1263DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);1264DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);1265DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);1266 1267#define DEF_DISC_AUTH_INT(name) \1268 __DEF_NACL_AUTH_INT(disc, name) \1269static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \1270{ \1271 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \1272 page); \1273} \1274CONFIGFS_ATTR_RO(iscsi_disc_, name)1275 1276DEF_DISC_AUTH_INT(authenticate_target);1277 1278 1279static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item,1280 char *page)1281{1282 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;1283 1284 return sysfs_emit(page, "%d\n", discovery_auth->enforce_discovery_auth);1285}1286 1287static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,1288 const char *page, size_t count)1289{1290 struct iscsi_param *param;1291 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;1292 u32 op;1293 int err;1294 1295 err = kstrtou32(page, 0, &op);1296 if (err)1297 return -EINVAL;1298 if ((op != 1) && (op != 0)) {1299 pr_err("Illegal value for enforce_discovery_auth:"1300 " %u\n", op);1301 return -EINVAL;1302 }1303 1304 if (!discovery_tpg) {1305 pr_err("iscsit_global->discovery_tpg is NULL\n");1306 return -EINVAL;1307 }1308 1309 param = iscsi_find_param_from_key(AUTHMETHOD,1310 discovery_tpg->param_list);1311 if (!param)1312 return -EINVAL;1313 1314 if (op) {1315 /*1316 * Reset the AuthMethod key to CHAP.1317 */1318 if (iscsi_update_param_value(param, CHAP) < 0)1319 return -EINVAL;1320 1321 discovery_tpg->tpg_attrib.authentication = 1;1322 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;1323 pr_debug("LIO-CORE[0] Successfully enabled"1324 " authentication enforcement for iSCSI"1325 " Discovery TPG\n");1326 } else {1327 /*1328 * Reset the AuthMethod key to CHAP,None1329 */1330 if (iscsi_update_param_value(param, "CHAP,None") < 0)1331 return -EINVAL;1332 1333 discovery_tpg->tpg_attrib.authentication = 0;1334 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;1335 pr_debug("LIO-CORE[0] Successfully disabled"1336 " authentication enforcement for iSCSI"1337 " Discovery TPG\n");1338 }1339 1340 return count;1341}1342 1343CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth);1344 1345static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {1346 &iscsi_disc_attr_userid,1347 &iscsi_disc_attr_password,1348 &iscsi_disc_attr_authenticate_target,1349 &iscsi_disc_attr_userid_mutual,1350 &iscsi_disc_attr_password_mutual,1351 &iscsi_disc_attr_enforce_discovery_auth,1352 NULL,1353};1354 1355/* End lio_target_discovery_auth_cit */1356 1357/* Start functions for target_core_fabric_ops */1358 1359static int iscsi_get_cmd_state(struct se_cmd *se_cmd)1360{1361 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);1362 1363 return cmd->i_state;1364}1365 1366static u32 lio_sess_get_index(struct se_session *se_sess)1367{1368 struct iscsit_session *sess = se_sess->fabric_sess_ptr;1369 1370 return sess->session_index;1371}1372 1373static u32 lio_sess_get_initiator_sid(1374 struct se_session *se_sess,1375 unsigned char *buf,1376 u32 size)1377{1378 struct iscsit_session *sess = se_sess->fabric_sess_ptr;1379 /*1380 * iSCSI Initiator Session Identifier from RFC-3720.1381 */1382 return snprintf(buf, size, "%6phN", sess->isid);1383}1384 1385static int lio_queue_data_in(struct se_cmd *se_cmd)1386{1387 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);1388 struct iscsit_conn *conn = cmd->conn;1389 1390 cmd->i_state = ISTATE_SEND_DATAIN;1391 return conn->conn_transport->iscsit_queue_data_in(conn, cmd);1392}1393 1394static int lio_write_pending(struct se_cmd *se_cmd)1395{1396 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);1397 struct iscsit_conn *conn = cmd->conn;1398 1399 if (!cmd->immediate_data && !cmd->unsolicited_data)1400 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);1401 1402 return 0;1403}1404 1405static int lio_queue_status(struct se_cmd *se_cmd)1406{1407 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);1408 struct iscsit_conn *conn = cmd->conn;1409 1410 cmd->i_state = ISTATE_SEND_STATUS;1411 1412 if (cmd->se_cmd.scsi_status || cmd->sense_reason) {1413 return iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state);1414 }1415 return conn->conn_transport->iscsit_queue_status(conn, cmd);1416}1417 1418static void lio_queue_tm_rsp(struct se_cmd *se_cmd)1419{1420 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);1421 1422 cmd->i_state = ISTATE_SEND_TASKMGTRSP;1423 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);1424}1425 1426static void lio_aborted_task(struct se_cmd *se_cmd)1427{1428 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);1429 1430 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);1431}1432 1433static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)1434{1435 return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;1436}1437 1438static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)1439{1440 return to_iscsi_tpg(se_tpg)->tpgt;1441}1442 1443static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)1444{1445 return to_iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;1446}1447 1448static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)1449{1450 return to_iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;1451}1452 1453static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)1454{1455 return to_iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;1456}1457 1458static int lio_tpg_check_demo_mode_write_protect(1459 struct se_portal_group *se_tpg)1460{1461 return to_iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;1462}1463 1464static int lio_tpg_check_prod_mode_write_protect(1465 struct se_portal_group *se_tpg)1466{1467 return to_iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;1468}1469 1470static int lio_tpg_check_prot_fabric_only(1471 struct se_portal_group *se_tpg)1472{1473 /*1474 * Only report fabric_prot_type if t10_pi has also been enabled1475 * for incoming ib_isert sessions.1476 */1477 if (!to_iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)1478 return 0;1479 return to_iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;1480}1481 1482/*1483 * This function calls iscsit_inc_session_usage_count() on the1484 * struct iscsit_session in question.1485 */1486static void lio_tpg_close_session(struct se_session *se_sess)1487{1488 struct iscsit_session *sess = se_sess->fabric_sess_ptr;1489 struct se_portal_group *se_tpg = &sess->tpg->tpg_se_tpg;1490 1491 spin_lock_bh(&se_tpg->session_lock);1492 spin_lock(&sess->conn_lock);1493 if (atomic_read(&sess->session_fall_back_to_erl0) ||1494 atomic_read(&sess->session_logout) ||1495 atomic_read(&sess->session_close) ||1496 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {1497 spin_unlock(&sess->conn_lock);1498 spin_unlock_bh(&se_tpg->session_lock);1499 return;1500 }1501 iscsit_inc_session_usage_count(sess);1502 atomic_set(&sess->session_reinstatement, 1);1503 atomic_set(&sess->session_fall_back_to_erl0, 1);1504 atomic_set(&sess->session_close, 1);1505 spin_unlock(&sess->conn_lock);1506 1507 iscsit_stop_time2retain_timer(sess);1508 spin_unlock_bh(&se_tpg->session_lock);1509 1510 iscsit_stop_session(sess, 1, 1);1511 iscsit_dec_session_usage_count(sess);1512}1513 1514static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)1515{1516 return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;1517}1518 1519static void lio_set_default_node_attributes(struct se_node_acl *se_acl)1520{1521 struct iscsi_node_acl *acl = to_iscsi_nacl(se_acl);1522 struct se_portal_group *se_tpg = se_acl->se_tpg;1523 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);1524 1525 acl->node_attrib.nacl = acl;1526 iscsit_set_default_node_attribues(acl, tpg);1527}1528 1529static int lio_check_stop_free(struct se_cmd *se_cmd)1530{1531 return target_put_sess_cmd(se_cmd);1532}1533 1534static void lio_release_cmd(struct se_cmd *se_cmd)1535{1536 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);1537 1538 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);1539 iscsit_release_cmd(cmd);1540}1541 1542const struct target_core_fabric_ops iscsi_ops = {1543 .module = THIS_MODULE,1544 .fabric_alias = "iscsi",1545 .fabric_name = "iSCSI",1546 .node_acl_size = sizeof(struct iscsi_node_acl),1547 .tpg_get_wwn = lio_tpg_get_endpoint_wwn,1548 .tpg_get_tag = lio_tpg_get_tag,1549 .tpg_get_default_depth = lio_tpg_get_default_depth,1550 .tpg_check_demo_mode = lio_tpg_check_demo_mode,1551 .tpg_check_demo_mode_cache = lio_tpg_check_demo_mode_cache,1552 .tpg_check_demo_mode_write_protect =1553 lio_tpg_check_demo_mode_write_protect,1554 .tpg_check_prod_mode_write_protect =1555 lio_tpg_check_prod_mode_write_protect,1556 .tpg_check_prot_fabric_only = &lio_tpg_check_prot_fabric_only,1557 .tpg_get_inst_index = lio_tpg_get_inst_index,1558 .check_stop_free = lio_check_stop_free,1559 .release_cmd = lio_release_cmd,1560 .close_session = lio_tpg_close_session,1561 .sess_get_index = lio_sess_get_index,1562 .sess_get_initiator_sid = lio_sess_get_initiator_sid,1563 .write_pending = lio_write_pending,1564 .set_default_node_attributes = lio_set_default_node_attributes,1565 .get_cmd_state = iscsi_get_cmd_state,1566 .queue_data_in = lio_queue_data_in,1567 .queue_status = lio_queue_status,1568 .queue_tm_rsp = lio_queue_tm_rsp,1569 .aborted_task = lio_aborted_task,1570 .fabric_make_wwn = lio_target_call_coreaddtiqn,1571 .fabric_drop_wwn = lio_target_call_coredeltiqn,1572 .add_wwn_groups = lio_target_add_wwn_groups,1573 .fabric_make_tpg = lio_target_tiqn_addtpg,1574 .fabric_enable_tpg = lio_target_tiqn_enabletpg,1575 .fabric_drop_tpg = lio_target_tiqn_deltpg,1576 .fabric_make_np = lio_target_call_addnptotpg,1577 .fabric_drop_np = lio_target_call_delnpfromtpg,1578 .fabric_init_nodeacl = lio_target_init_nodeacl,1579 1580 .tfc_discovery_attrs = lio_target_discovery_auth_attrs,1581 .tfc_wwn_attrs = lio_target_wwn_attrs,1582 .tfc_tpg_base_attrs = lio_target_tpg_attrs,1583 .tfc_tpg_attrib_attrs = lio_target_tpg_attrib_attrs,1584 .tfc_tpg_auth_attrs = lio_target_tpg_auth_attrs,1585 .tfc_tpg_param_attrs = lio_target_tpg_param_attrs,1586 .tfc_tpg_np_base_attrs = lio_target_portal_attrs,1587 .tfc_tpg_nacl_base_attrs = lio_target_initiator_attrs,1588 .tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs,1589 .tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs,1590 .tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs,1591 1592 .write_pending_must_be_called = 1,1593 1594 .default_submit_type = TARGET_DIRECT_SUBMIT,1595 .direct_submit_supp = 1,1596};1597