1 /******************************************************************************* 2 * This file contains the main functions related to Initiator Node Attributes. 3 * 4 * (c) Copyright 2007-2013 Datera, Inc. 5 * 6 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 ******************************************************************************/ 18 19 #include <target/target_core_base.h> 20 21 #include <target/iscsi/iscsi_target_core.h> 22 #include "iscsi_target_device.h" 23 #include "iscsi_target_tpg.h" 24 #include "iscsi_target_util.h" 25 #include "iscsi_target_nodeattrib.h" 26 27 static inline char *iscsit_na_get_initiatorname( 28 struct iscsi_node_acl *nacl) 29 { 30 struct se_node_acl *se_nacl = &nacl->se_node_acl; 31 32 return &se_nacl->initiatorname[0]; 33 } 34 35 void iscsit_set_default_node_attribues( 36 struct iscsi_node_acl *acl, 37 struct iscsi_portal_group *tpg) 38 { 39 struct iscsi_node_attrib *a = &acl->node_attrib; 40 41 a->dataout_timeout = NA_DATAOUT_TIMEOUT; 42 a->dataout_timeout_retries = NA_DATAOUT_TIMEOUT_RETRIES; 43 a->nopin_timeout = NA_NOPIN_TIMEOUT; 44 a->nopin_response_timeout = NA_NOPIN_RESPONSE_TIMEOUT; 45 a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS; 46 a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS; 47 a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS; 48 a->default_erl = tpg->tpg_attrib.default_erl; 49 } 50 51 int iscsit_na_dataout_timeout( 52 struct iscsi_node_acl *acl, 53 u32 dataout_timeout) 54 { 55 struct iscsi_node_attrib *a = &acl->node_attrib; 56 57 if (dataout_timeout > NA_DATAOUT_TIMEOUT_MAX) { 58 pr_err("Requested DataOut Timeout %u larger than" 59 " maximum %u\n", dataout_timeout, 60 NA_DATAOUT_TIMEOUT_MAX); 61 return -EINVAL; 62 } else if (dataout_timeout < NA_DATAOUT_TIMEOUT_MIX) { 63 pr_err("Requested DataOut Timeout %u smaller than" 64 " minimum %u\n", dataout_timeout, 65 NA_DATAOUT_TIMEOUT_MIX); 66 return -EINVAL; 67 } 68 69 a->dataout_timeout = dataout_timeout; 70 pr_debug("Set DataOut Timeout to %u for Initiator Node" 71 " %s\n", a->dataout_timeout, iscsit_na_get_initiatorname(acl)); 72 73 return 0; 74 } 75 76 int iscsit_na_dataout_timeout_retries( 77 struct iscsi_node_acl *acl, 78 u32 dataout_timeout_retries) 79 { 80 struct iscsi_node_attrib *a = &acl->node_attrib; 81 82 if (dataout_timeout_retries > NA_DATAOUT_TIMEOUT_RETRIES_MAX) { 83 pr_err("Requested DataOut Timeout Retries %u larger" 84 " than maximum %u", dataout_timeout_retries, 85 NA_DATAOUT_TIMEOUT_RETRIES_MAX); 86 return -EINVAL; 87 } else if (dataout_timeout_retries < NA_DATAOUT_TIMEOUT_RETRIES_MIN) { 88 pr_err("Requested DataOut Timeout Retries %u smaller" 89 " than minimum %u", dataout_timeout_retries, 90 NA_DATAOUT_TIMEOUT_RETRIES_MIN); 91 return -EINVAL; 92 } 93 94 a->dataout_timeout_retries = dataout_timeout_retries; 95 pr_debug("Set DataOut Timeout Retries to %u for" 96 " Initiator Node %s\n", a->dataout_timeout_retries, 97 iscsit_na_get_initiatorname(acl)); 98 99 return 0; 100 } 101 102 int iscsit_na_nopin_timeout( 103 struct iscsi_node_acl *acl, 104 u32 nopin_timeout) 105 { 106 struct iscsi_node_attrib *a = &acl->node_attrib; 107 struct iscsi_session *sess; 108 struct iscsi_conn *conn; 109 struct se_node_acl *se_nacl = &a->nacl->se_node_acl; 110 struct se_session *se_sess; 111 u32 orig_nopin_timeout = a->nopin_timeout; 112 113 if (nopin_timeout > NA_NOPIN_TIMEOUT_MAX) { 114 pr_err("Requested NopIn Timeout %u larger than maximum" 115 " %u\n", nopin_timeout, NA_NOPIN_TIMEOUT_MAX); 116 return -EINVAL; 117 } else if ((nopin_timeout < NA_NOPIN_TIMEOUT_MIN) && 118 (nopin_timeout != 0)) { 119 pr_err("Requested NopIn Timeout %u smaller than" 120 " minimum %u and not 0\n", nopin_timeout, 121 NA_NOPIN_TIMEOUT_MIN); 122 return -EINVAL; 123 } 124 125 a->nopin_timeout = nopin_timeout; 126 pr_debug("Set NopIn Timeout to %u for Initiator" 127 " Node %s\n", a->nopin_timeout, 128 iscsit_na_get_initiatorname(acl)); 129 /* 130 * Reenable disabled nopin_timeout timer for all iSCSI connections. 131 */ 132 if (!orig_nopin_timeout) { 133 spin_lock_bh(&se_nacl->nacl_sess_lock); 134 se_sess = se_nacl->nacl_sess; 135 if (se_sess) { 136 sess = se_sess->fabric_sess_ptr; 137 138 spin_lock(&sess->conn_lock); 139 list_for_each_entry(conn, &sess->sess_conn_list, 140 conn_list) { 141 if (conn->conn_state != 142 TARG_CONN_STATE_LOGGED_IN) 143 continue; 144 145 spin_lock(&conn->nopin_timer_lock); 146 __iscsit_start_nopin_timer(conn); 147 spin_unlock(&conn->nopin_timer_lock); 148 } 149 spin_unlock(&sess->conn_lock); 150 } 151 spin_unlock_bh(&se_nacl->nacl_sess_lock); 152 } 153 154 return 0; 155 } 156 157 int iscsit_na_nopin_response_timeout( 158 struct iscsi_node_acl *acl, 159 u32 nopin_response_timeout) 160 { 161 struct iscsi_node_attrib *a = &acl->node_attrib; 162 163 if (nopin_response_timeout > NA_NOPIN_RESPONSE_TIMEOUT_MAX) { 164 pr_err("Requested NopIn Response Timeout %u larger" 165 " than maximum %u\n", nopin_response_timeout, 166 NA_NOPIN_RESPONSE_TIMEOUT_MAX); 167 return -EINVAL; 168 } else if (nopin_response_timeout < NA_NOPIN_RESPONSE_TIMEOUT_MIN) { 169 pr_err("Requested NopIn Response Timeout %u smaller" 170 " than minimum %u\n", nopin_response_timeout, 171 NA_NOPIN_RESPONSE_TIMEOUT_MIN); 172 return -EINVAL; 173 } 174 175 a->nopin_response_timeout = nopin_response_timeout; 176 pr_debug("Set NopIn Response Timeout to %u for" 177 " Initiator Node %s\n", a->nopin_timeout, 178 iscsit_na_get_initiatorname(acl)); 179 180 return 0; 181 } 182 183 int iscsit_na_random_datain_pdu_offsets( 184 struct iscsi_node_acl *acl, 185 u32 random_datain_pdu_offsets) 186 { 187 struct iscsi_node_attrib *a = &acl->node_attrib; 188 189 if (random_datain_pdu_offsets != 0 && random_datain_pdu_offsets != 1) { 190 pr_err("Requested Random DataIN PDU Offsets: %u not" 191 " 0 or 1\n", random_datain_pdu_offsets); 192 return -EINVAL; 193 } 194 195 a->random_datain_pdu_offsets = random_datain_pdu_offsets; 196 pr_debug("Set Random DataIN PDU Offsets to %u for" 197 " Initiator Node %s\n", a->random_datain_pdu_offsets, 198 iscsit_na_get_initiatorname(acl)); 199 200 return 0; 201 } 202 203 int iscsit_na_random_datain_seq_offsets( 204 struct iscsi_node_acl *acl, 205 u32 random_datain_seq_offsets) 206 { 207 struct iscsi_node_attrib *a = &acl->node_attrib; 208 209 if (random_datain_seq_offsets != 0 && random_datain_seq_offsets != 1) { 210 pr_err("Requested Random DataIN Sequence Offsets: %u" 211 " not 0 or 1\n", random_datain_seq_offsets); 212 return -EINVAL; 213 } 214 215 a->random_datain_seq_offsets = random_datain_seq_offsets; 216 pr_debug("Set Random DataIN Sequence Offsets to %u for" 217 " Initiator Node %s\n", a->random_datain_seq_offsets, 218 iscsit_na_get_initiatorname(acl)); 219 220 return 0; 221 } 222 223 int iscsit_na_random_r2t_offsets( 224 struct iscsi_node_acl *acl, 225 u32 random_r2t_offsets) 226 { 227 struct iscsi_node_attrib *a = &acl->node_attrib; 228 229 if (random_r2t_offsets != 0 && random_r2t_offsets != 1) { 230 pr_err("Requested Random R2T Offsets: %u not" 231 " 0 or 1\n", random_r2t_offsets); 232 return -EINVAL; 233 } 234 235 a->random_r2t_offsets = random_r2t_offsets; 236 pr_debug("Set Random R2T Offsets to %u for" 237 " Initiator Node %s\n", a->random_r2t_offsets, 238 iscsit_na_get_initiatorname(acl)); 239 240 return 0; 241 } 242 243 int iscsit_na_default_erl( 244 struct iscsi_node_acl *acl, 245 u32 default_erl) 246 { 247 struct iscsi_node_attrib *a = &acl->node_attrib; 248 249 if (default_erl != 0 && default_erl != 1 && default_erl != 2) { 250 pr_err("Requested default ERL: %u not 0, 1, or 2\n", 251 default_erl); 252 return -EINVAL; 253 } 254 255 a->default_erl = default_erl; 256 pr_debug("Set use ERL0 flag to %u for Initiator" 257 " Node %s\n", a->default_erl, 258 iscsit_na_get_initiatorname(acl)); 259 260 return 0; 261 } 262