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1// SPDX-License-Identifier: GPL-2.0-or-later2/*******************************************************************************3 * This file contains the main functions related to Initiator Node Attributes.4 *5 * (c) Copyright 2007-2013 Datera, Inc.6 *7 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>8 *9 ******************************************************************************/10 11#include <target/target_core_base.h>12 13#include <target/iscsi/iscsi_target_core.h>14#include "iscsi_target_device.h"15#include "iscsi_target_tpg.h"16#include "iscsi_target_util.h"17#include "iscsi_target_nodeattrib.h"18 19static inline char *iscsit_na_get_initiatorname(20 struct iscsi_node_acl *nacl)21{22 struct se_node_acl *se_nacl = &nacl->se_node_acl;23 24 return &se_nacl->initiatorname[0];25}26 27void iscsit_set_default_node_attribues(28 struct iscsi_node_acl *acl,29 struct iscsi_portal_group *tpg)30{31 struct iscsi_node_attrib *a = &acl->node_attrib;32 33 a->authentication = NA_AUTHENTICATION_INHERITED;34 a->dataout_timeout = NA_DATAOUT_TIMEOUT;35 a->dataout_timeout_retries = NA_DATAOUT_TIMEOUT_RETRIES;36 a->nopin_timeout = NA_NOPIN_TIMEOUT;37 a->nopin_response_timeout = NA_NOPIN_RESPONSE_TIMEOUT;38 a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS;39 a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS;40 a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS;41 a->default_erl = tpg->tpg_attrib.default_erl;42}43 44int iscsit_na_dataout_timeout(45 struct iscsi_node_acl *acl,46 u32 dataout_timeout)47{48 struct iscsi_node_attrib *a = &acl->node_attrib;49 50 if (dataout_timeout > NA_DATAOUT_TIMEOUT_MAX) {51 pr_err("Requested DataOut Timeout %u larger than"52 " maximum %u\n", dataout_timeout,53 NA_DATAOUT_TIMEOUT_MAX);54 return -EINVAL;55 } else if (dataout_timeout < NA_DATAOUT_TIMEOUT_MIX) {56 pr_err("Requested DataOut Timeout %u smaller than"57 " minimum %u\n", dataout_timeout,58 NA_DATAOUT_TIMEOUT_MIX);59 return -EINVAL;60 }61 62 a->dataout_timeout = dataout_timeout;63 pr_debug("Set DataOut Timeout to %u for Initiator Node"64 " %s\n", a->dataout_timeout, iscsit_na_get_initiatorname(acl));65 66 return 0;67}68 69int iscsit_na_dataout_timeout_retries(70 struct iscsi_node_acl *acl,71 u32 dataout_timeout_retries)72{73 struct iscsi_node_attrib *a = &acl->node_attrib;74 75 if (dataout_timeout_retries > NA_DATAOUT_TIMEOUT_RETRIES_MAX) {76 pr_err("Requested DataOut Timeout Retries %u larger"77 " than maximum %u", dataout_timeout_retries,78 NA_DATAOUT_TIMEOUT_RETRIES_MAX);79 return -EINVAL;80 } else if (dataout_timeout_retries < NA_DATAOUT_TIMEOUT_RETRIES_MIN) {81 pr_err("Requested DataOut Timeout Retries %u smaller"82 " than minimum %u", dataout_timeout_retries,83 NA_DATAOUT_TIMEOUT_RETRIES_MIN);84 return -EINVAL;85 }86 87 a->dataout_timeout_retries = dataout_timeout_retries;88 pr_debug("Set DataOut Timeout Retries to %u for"89 " Initiator Node %s\n", a->dataout_timeout_retries,90 iscsit_na_get_initiatorname(acl));91 92 return 0;93}94 95int iscsit_na_nopin_timeout(96 struct iscsi_node_acl *acl,97 u32 nopin_timeout)98{99 struct iscsi_node_attrib *a = &acl->node_attrib;100 struct iscsit_session *sess;101 struct iscsit_conn *conn;102 struct se_node_acl *se_nacl = &a->nacl->se_node_acl;103 struct se_session *se_sess;104 u32 orig_nopin_timeout = a->nopin_timeout;105 106 if (nopin_timeout > NA_NOPIN_TIMEOUT_MAX) {107 pr_err("Requested NopIn Timeout %u larger than maximum"108 " %u\n", nopin_timeout, NA_NOPIN_TIMEOUT_MAX);109 return -EINVAL;110 } else if ((nopin_timeout < NA_NOPIN_TIMEOUT_MIN) &&111 (nopin_timeout != 0)) {112 pr_err("Requested NopIn Timeout %u smaller than"113 " minimum %u and not 0\n", nopin_timeout,114 NA_NOPIN_TIMEOUT_MIN);115 return -EINVAL;116 }117 118 a->nopin_timeout = nopin_timeout;119 pr_debug("Set NopIn Timeout to %u for Initiator"120 " Node %s\n", a->nopin_timeout,121 iscsit_na_get_initiatorname(acl));122 /*123 * Reenable disabled nopin_timeout timer for all iSCSI connections.124 */125 if (!orig_nopin_timeout) {126 spin_lock_bh(&se_nacl->nacl_sess_lock);127 se_sess = se_nacl->nacl_sess;128 if (se_sess) {129 sess = se_sess->fabric_sess_ptr;130 131 spin_lock(&sess->conn_lock);132 list_for_each_entry(conn, &sess->sess_conn_list,133 conn_list) {134 if (conn->conn_state !=135 TARG_CONN_STATE_LOGGED_IN)136 continue;137 138 spin_lock(&conn->nopin_timer_lock);139 __iscsit_start_nopin_timer(conn);140 spin_unlock(&conn->nopin_timer_lock);141 }142 spin_unlock(&sess->conn_lock);143 }144 spin_unlock_bh(&se_nacl->nacl_sess_lock);145 }146 147 return 0;148}149 150int iscsit_na_nopin_response_timeout(151 struct iscsi_node_acl *acl,152 u32 nopin_response_timeout)153{154 struct iscsi_node_attrib *a = &acl->node_attrib;155 156 if (nopin_response_timeout > NA_NOPIN_RESPONSE_TIMEOUT_MAX) {157 pr_err("Requested NopIn Response Timeout %u larger"158 " than maximum %u\n", nopin_response_timeout,159 NA_NOPIN_RESPONSE_TIMEOUT_MAX);160 return -EINVAL;161 } else if (nopin_response_timeout < NA_NOPIN_RESPONSE_TIMEOUT_MIN) {162 pr_err("Requested NopIn Response Timeout %u smaller"163 " than minimum %u\n", nopin_response_timeout,164 NA_NOPIN_RESPONSE_TIMEOUT_MIN);165 return -EINVAL;166 }167 168 a->nopin_response_timeout = nopin_response_timeout;169 pr_debug("Set NopIn Response Timeout to %u for"170 " Initiator Node %s\n", a->nopin_timeout,171 iscsit_na_get_initiatorname(acl));172 173 return 0;174}175 176int iscsit_na_random_datain_pdu_offsets(177 struct iscsi_node_acl *acl,178 u32 random_datain_pdu_offsets)179{180 struct iscsi_node_attrib *a = &acl->node_attrib;181 182 if (random_datain_pdu_offsets != 0 && random_datain_pdu_offsets != 1) {183 pr_err("Requested Random DataIN PDU Offsets: %u not"184 " 0 or 1\n", random_datain_pdu_offsets);185 return -EINVAL;186 }187 188 a->random_datain_pdu_offsets = random_datain_pdu_offsets;189 pr_debug("Set Random DataIN PDU Offsets to %u for"190 " Initiator Node %s\n", a->random_datain_pdu_offsets,191 iscsit_na_get_initiatorname(acl));192 193 return 0;194}195 196int iscsit_na_random_datain_seq_offsets(197 struct iscsi_node_acl *acl,198 u32 random_datain_seq_offsets)199{200 struct iscsi_node_attrib *a = &acl->node_attrib;201 202 if (random_datain_seq_offsets != 0 && random_datain_seq_offsets != 1) {203 pr_err("Requested Random DataIN Sequence Offsets: %u"204 " not 0 or 1\n", random_datain_seq_offsets);205 return -EINVAL;206 }207 208 a->random_datain_seq_offsets = random_datain_seq_offsets;209 pr_debug("Set Random DataIN Sequence Offsets to %u for"210 " Initiator Node %s\n", a->random_datain_seq_offsets,211 iscsit_na_get_initiatorname(acl));212 213 return 0;214}215 216int iscsit_na_random_r2t_offsets(217 struct iscsi_node_acl *acl,218 u32 random_r2t_offsets)219{220 struct iscsi_node_attrib *a = &acl->node_attrib;221 222 if (random_r2t_offsets != 0 && random_r2t_offsets != 1) {223 pr_err("Requested Random R2T Offsets: %u not"224 " 0 or 1\n", random_r2t_offsets);225 return -EINVAL;226 }227 228 a->random_r2t_offsets = random_r2t_offsets;229 pr_debug("Set Random R2T Offsets to %u for"230 " Initiator Node %s\n", a->random_r2t_offsets,231 iscsit_na_get_initiatorname(acl));232 233 return 0;234}235 236int iscsit_na_default_erl(237 struct iscsi_node_acl *acl,238 u32 default_erl)239{240 struct iscsi_node_attrib *a = &acl->node_attrib;241 242 if (default_erl != 0 && default_erl != 1 && default_erl != 2) {243 pr_err("Requested default ERL: %u not 0, 1, or 2\n",244 default_erl);245 return -EINVAL;246 }247 248 a->default_erl = default_erl;249 pr_debug("Set use ERL0 flag to %u for Initiator"250 " Node %s\n", a->default_erl,251 iscsit_na_get_initiatorname(acl));252 253 return 0;254}255