1// SPDX-License-Identifier: GPL-2.0-or-later 2/******************************************************************************* 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