Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | * This file contains iSCSI Target Portal Group related functions. |
| 3 | * |
| 4 | * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. |
| 5 | * |
| 6 | * Licensed to the Linux Foundation under the General Public License (GPL) version 2. |
| 7 | * |
| 8 | * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | ******************************************************************************/ |
| 20 | |
| 21 | #include <target/target_core_base.h> |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 22 | #include <target/target_core_fabric.h> |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 23 | #include <target/target_core_configfs.h> |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 24 | |
| 25 | #include "iscsi_target_core.h" |
| 26 | #include "iscsi_target_erl0.h" |
| 27 | #include "iscsi_target_login.h" |
| 28 | #include "iscsi_target_nodeattrib.h" |
| 29 | #include "iscsi_target_tpg.h" |
| 30 | #include "iscsi_target_util.h" |
| 31 | #include "iscsi_target.h" |
| 32 | #include "iscsi_target_parameters.h" |
| 33 | |
Nicholas Bellinger | baa4d64 | 2013-03-06 21:54:13 -0800 | [diff] [blame] | 34 | #include <target/iscsi/iscsi_transport.h> |
| 35 | |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 36 | struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt) |
| 37 | { |
| 38 | struct iscsi_portal_group *tpg; |
| 39 | |
| 40 | tpg = kzalloc(sizeof(struct iscsi_portal_group), GFP_KERNEL); |
| 41 | if (!tpg) { |
| 42 | pr_err("Unable to allocate struct iscsi_portal_group\n"); |
| 43 | return NULL; |
| 44 | } |
| 45 | |
| 46 | tpg->tpgt = tpgt; |
| 47 | tpg->tpg_state = TPG_STATE_FREE; |
| 48 | tpg->tpg_tiqn = tiqn; |
| 49 | INIT_LIST_HEAD(&tpg->tpg_gnp_list); |
| 50 | INIT_LIST_HEAD(&tpg->tpg_list); |
| 51 | mutex_init(&tpg->tpg_access_lock); |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 52 | sema_init(&tpg->np_login_sem, 1); |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 53 | spin_lock_init(&tpg->tpg_state_lock); |
| 54 | spin_lock_init(&tpg->tpg_np_lock); |
| 55 | |
| 56 | return tpg; |
| 57 | } |
| 58 | |
| 59 | static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *); |
| 60 | |
| 61 | int iscsit_load_discovery_tpg(void) |
| 62 | { |
| 63 | struct iscsi_param *param; |
| 64 | struct iscsi_portal_group *tpg; |
| 65 | int ret; |
| 66 | |
| 67 | tpg = iscsit_alloc_portal_group(NULL, 1); |
| 68 | if (!tpg) { |
| 69 | pr_err("Unable to allocate struct iscsi_portal_group\n"); |
| 70 | return -1; |
| 71 | } |
| 72 | |
| 73 | ret = core_tpg_register( |
| 74 | &lio_target_fabric_configfs->tf_ops, |
Jörn Engel | 8359cf4 | 2011-11-24 02:05:51 +0100 | [diff] [blame] | 75 | NULL, &tpg->tpg_se_tpg, tpg, |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 76 | TRANSPORT_TPG_TYPE_DISCOVERY); |
| 77 | if (ret < 0) { |
| 78 | kfree(tpg); |
| 79 | return -1; |
| 80 | } |
| 81 | |
| 82 | tpg->sid = 1; /* First Assigned LIO Session ID */ |
| 83 | iscsit_set_default_tpg_attribs(tpg); |
| 84 | |
| 85 | if (iscsi_create_default_params(&tpg->param_list) < 0) |
| 86 | goto out; |
| 87 | /* |
| 88 | * By default we disable authentication for discovery sessions, |
| 89 | * this can be changed with: |
| 90 | * |
| 91 | * /sys/kernel/config/target/iscsi/discovery_auth/enforce_discovery_auth |
| 92 | */ |
| 93 | param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); |
| 94 | if (!param) |
| 95 | goto out; |
| 96 | |
| 97 | if (iscsi_update_param_value(param, "CHAP,None") < 0) |
| 98 | goto out; |
| 99 | |
| 100 | tpg->tpg_attrib.authentication = 0; |
| 101 | |
| 102 | spin_lock(&tpg->tpg_state_lock); |
| 103 | tpg->tpg_state = TPG_STATE_ACTIVE; |
| 104 | spin_unlock(&tpg->tpg_state_lock); |
| 105 | |
| 106 | iscsit_global->discovery_tpg = tpg; |
| 107 | pr_debug("CORE[0] - Allocated Discovery TPG\n"); |
| 108 | |
| 109 | return 0; |
| 110 | out: |
| 111 | if (tpg->sid == 1) |
| 112 | core_tpg_deregister(&tpg->tpg_se_tpg); |
| 113 | kfree(tpg); |
| 114 | return -1; |
| 115 | } |
| 116 | |
| 117 | void iscsit_release_discovery_tpg(void) |
| 118 | { |
| 119 | struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg; |
| 120 | |
| 121 | if (!tpg) |
| 122 | return; |
| 123 | |
| 124 | core_tpg_deregister(&tpg->tpg_se_tpg); |
| 125 | |
| 126 | kfree(tpg); |
| 127 | iscsit_global->discovery_tpg = NULL; |
| 128 | } |
| 129 | |
| 130 | struct iscsi_portal_group *iscsit_get_tpg_from_np( |
| 131 | struct iscsi_tiqn *tiqn, |
Nicholas Bellinger | d381a80 | 2013-08-15 13:40:17 -0700 | [diff] [blame] | 132 | struct iscsi_np *np, |
| 133 | struct iscsi_tpg_np **tpg_np_out) |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 134 | { |
| 135 | struct iscsi_portal_group *tpg = NULL; |
| 136 | struct iscsi_tpg_np *tpg_np; |
| 137 | |
| 138 | spin_lock(&tiqn->tiqn_tpg_lock); |
| 139 | list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { |
| 140 | |
| 141 | spin_lock(&tpg->tpg_state_lock); |
| 142 | if (tpg->tpg_state == TPG_STATE_FREE) { |
| 143 | spin_unlock(&tpg->tpg_state_lock); |
| 144 | continue; |
| 145 | } |
| 146 | spin_unlock(&tpg->tpg_state_lock); |
| 147 | |
| 148 | spin_lock(&tpg->tpg_np_lock); |
| 149 | list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { |
| 150 | if (tpg_np->tpg_np == np) { |
Nicholas Bellinger | d381a80 | 2013-08-15 13:40:17 -0700 | [diff] [blame] | 151 | *tpg_np_out = tpg_np; |
| 152 | kref_get(&tpg_np->tpg_np_kref); |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 153 | spin_unlock(&tpg->tpg_np_lock); |
| 154 | spin_unlock(&tiqn->tiqn_tpg_lock); |
| 155 | return tpg; |
| 156 | } |
| 157 | } |
| 158 | spin_unlock(&tpg->tpg_np_lock); |
| 159 | } |
| 160 | spin_unlock(&tiqn->tiqn_tpg_lock); |
| 161 | |
| 162 | return NULL; |
| 163 | } |
| 164 | |
| 165 | int iscsit_get_tpg( |
| 166 | struct iscsi_portal_group *tpg) |
| 167 | { |
| 168 | int ret; |
| 169 | |
| 170 | ret = mutex_lock_interruptible(&tpg->tpg_access_lock); |
| 171 | return ((ret != 0) || signal_pending(current)) ? -1 : 0; |
| 172 | } |
| 173 | |
| 174 | void iscsit_put_tpg(struct iscsi_portal_group *tpg) |
| 175 | { |
| 176 | mutex_unlock(&tpg->tpg_access_lock); |
| 177 | } |
| 178 | |
| 179 | static void iscsit_clear_tpg_np_login_thread( |
| 180 | struct iscsi_tpg_np *tpg_np, |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 181 | struct iscsi_portal_group *tpg, |
| 182 | bool shutdown) |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 183 | { |
| 184 | if (!tpg_np->tpg_np) { |
| 185 | pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); |
| 186 | return; |
| 187 | } |
| 188 | |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 189 | iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | void iscsit_clear_tpg_np_login_threads( |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 193 | struct iscsi_portal_group *tpg, |
| 194 | bool shutdown) |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 195 | { |
| 196 | struct iscsi_tpg_np *tpg_np; |
| 197 | |
| 198 | spin_lock(&tpg->tpg_np_lock); |
| 199 | list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { |
| 200 | if (!tpg_np->tpg_np) { |
| 201 | pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); |
| 202 | continue; |
| 203 | } |
| 204 | spin_unlock(&tpg->tpg_np_lock); |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 205 | iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 206 | spin_lock(&tpg->tpg_np_lock); |
| 207 | } |
| 208 | spin_unlock(&tpg->tpg_np_lock); |
| 209 | } |
| 210 | |
| 211 | void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg) |
| 212 | { |
| 213 | iscsi_print_params(tpg->param_list); |
| 214 | } |
| 215 | |
| 216 | static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) |
| 217 | { |
| 218 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
| 219 | |
| 220 | a->authentication = TA_AUTHENTICATION; |
| 221 | a->login_timeout = TA_LOGIN_TIMEOUT; |
| 222 | a->netif_timeout = TA_NETIF_TIMEOUT; |
| 223 | a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; |
| 224 | a->generate_node_acls = TA_GENERATE_NODE_ACLS; |
| 225 | a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; |
| 226 | a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; |
| 227 | a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; |
| 228 | } |
| 229 | |
| 230 | int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) |
| 231 | { |
| 232 | if (tpg->tpg_state != TPG_STATE_FREE) { |
| 233 | pr_err("Unable to add iSCSI Target Portal Group: %d" |
| 234 | " while not in TPG_STATE_FREE state.\n", tpg->tpgt); |
| 235 | return -EEXIST; |
| 236 | } |
| 237 | iscsit_set_default_tpg_attribs(tpg); |
| 238 | |
| 239 | if (iscsi_create_default_params(&tpg->param_list) < 0) |
| 240 | goto err_out; |
| 241 | |
| 242 | ISCSI_TPG_ATTRIB(tpg)->tpg = tpg; |
| 243 | |
| 244 | spin_lock(&tpg->tpg_state_lock); |
| 245 | tpg->tpg_state = TPG_STATE_INACTIVE; |
| 246 | spin_unlock(&tpg->tpg_state_lock); |
| 247 | |
| 248 | spin_lock(&tiqn->tiqn_tpg_lock); |
| 249 | list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); |
| 250 | tiqn->tiqn_ntpgs++; |
| 251 | pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", |
| 252 | tiqn->tiqn, tpg->tpgt); |
| 253 | spin_unlock(&tiqn->tiqn_tpg_lock); |
| 254 | |
| 255 | return 0; |
| 256 | err_out: |
| 257 | if (tpg->param_list) { |
| 258 | iscsi_release_param_list(tpg->param_list); |
| 259 | tpg->param_list = NULL; |
| 260 | } |
| 261 | kfree(tpg); |
| 262 | return -ENOMEM; |
| 263 | } |
| 264 | |
| 265 | int iscsit_tpg_del_portal_group( |
| 266 | struct iscsi_tiqn *tiqn, |
| 267 | struct iscsi_portal_group *tpg, |
| 268 | int force) |
| 269 | { |
| 270 | u8 old_state = tpg->tpg_state; |
| 271 | |
| 272 | spin_lock(&tpg->tpg_state_lock); |
| 273 | tpg->tpg_state = TPG_STATE_INACTIVE; |
| 274 | spin_unlock(&tpg->tpg_state_lock); |
| 275 | |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 276 | iscsit_clear_tpg_np_login_threads(tpg, true); |
| 277 | |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 278 | if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { |
| 279 | pr_err("Unable to delete iSCSI Target Portal Group:" |
| 280 | " %hu while active sessions exist, and force=0\n", |
| 281 | tpg->tpgt); |
| 282 | tpg->tpg_state = old_state; |
| 283 | return -EPERM; |
| 284 | } |
| 285 | |
| 286 | core_tpg_clear_object_luns(&tpg->tpg_se_tpg); |
| 287 | |
| 288 | if (tpg->param_list) { |
| 289 | iscsi_release_param_list(tpg->param_list); |
| 290 | tpg->param_list = NULL; |
| 291 | } |
| 292 | |
| 293 | core_tpg_deregister(&tpg->tpg_se_tpg); |
| 294 | |
| 295 | spin_lock(&tpg->tpg_state_lock); |
| 296 | tpg->tpg_state = TPG_STATE_FREE; |
| 297 | spin_unlock(&tpg->tpg_state_lock); |
| 298 | |
| 299 | spin_lock(&tiqn->tiqn_tpg_lock); |
| 300 | tiqn->tiqn_ntpgs--; |
| 301 | list_del(&tpg->tpg_list); |
| 302 | spin_unlock(&tiqn->tiqn_tpg_lock); |
| 303 | |
| 304 | pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n", |
| 305 | tiqn->tiqn, tpg->tpgt); |
| 306 | |
| 307 | kfree(tpg); |
| 308 | return 0; |
| 309 | } |
| 310 | |
| 311 | int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) |
| 312 | { |
| 313 | struct iscsi_param *param; |
| 314 | struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; |
Andy Grover | 617a0c2 | 2012-07-12 17:34:56 -0700 | [diff] [blame] | 315 | int ret; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 316 | |
| 317 | spin_lock(&tpg->tpg_state_lock); |
| 318 | if (tpg->tpg_state == TPG_STATE_ACTIVE) { |
| 319 | pr_err("iSCSI target portal group: %hu is already" |
| 320 | " active, ignoring request.\n", tpg->tpgt); |
| 321 | spin_unlock(&tpg->tpg_state_lock); |
| 322 | return -EINVAL; |
| 323 | } |
| 324 | /* |
| 325 | * Make sure that AuthMethod does not contain None as an option |
| 326 | * unless explictly disabled. Set the default to CHAP if authentication |
| 327 | * is enforced (as per default), and remove the NONE option. |
| 328 | */ |
| 329 | param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); |
| 330 | if (!param) { |
| 331 | spin_unlock(&tpg->tpg_state_lock); |
Andy Grover | 617a0c2 | 2012-07-12 17:34:56 -0700 | [diff] [blame] | 332 | return -EINVAL; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 333 | } |
| 334 | |
| 335 | if (ISCSI_TPG_ATTRIB(tpg)->authentication) { |
Andy Grover | 617a0c2 | 2012-07-12 17:34:56 -0700 | [diff] [blame] | 336 | if (!strcmp(param->value, NONE)) { |
| 337 | ret = iscsi_update_param_value(param, CHAP); |
| 338 | if (ret) |
| 339 | goto err; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 340 | } |
Andy Grover | 617a0c2 | 2012-07-12 17:34:56 -0700 | [diff] [blame] | 341 | |
| 342 | ret = iscsit_ta_authentication(tpg, 1); |
| 343 | if (ret < 0) |
| 344 | goto err; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 345 | } |
| 346 | |
| 347 | tpg->tpg_state = TPG_STATE_ACTIVE; |
| 348 | spin_unlock(&tpg->tpg_state_lock); |
| 349 | |
| 350 | spin_lock(&tiqn->tiqn_tpg_lock); |
| 351 | tiqn->tiqn_active_tpgs++; |
| 352 | pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n", |
| 353 | tpg->tpgt); |
| 354 | spin_unlock(&tiqn->tiqn_tpg_lock); |
| 355 | |
| 356 | return 0; |
Andy Grover | 617a0c2 | 2012-07-12 17:34:56 -0700 | [diff] [blame] | 357 | |
| 358 | err: |
| 359 | spin_unlock(&tpg->tpg_state_lock); |
| 360 | return ret; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 361 | } |
| 362 | |
| 363 | int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) |
| 364 | { |
| 365 | struct iscsi_tiqn *tiqn; |
| 366 | u8 old_state = tpg->tpg_state; |
| 367 | |
| 368 | spin_lock(&tpg->tpg_state_lock); |
| 369 | if (tpg->tpg_state == TPG_STATE_INACTIVE) { |
| 370 | pr_err("iSCSI Target Portal Group: %hu is already" |
| 371 | " inactive, ignoring request.\n", tpg->tpgt); |
| 372 | spin_unlock(&tpg->tpg_state_lock); |
| 373 | return -EINVAL; |
| 374 | } |
| 375 | tpg->tpg_state = TPG_STATE_INACTIVE; |
| 376 | spin_unlock(&tpg->tpg_state_lock); |
| 377 | |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 378 | iscsit_clear_tpg_np_login_threads(tpg, false); |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 379 | |
| 380 | if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { |
| 381 | spin_lock(&tpg->tpg_state_lock); |
| 382 | tpg->tpg_state = old_state; |
| 383 | spin_unlock(&tpg->tpg_state_lock); |
| 384 | pr_err("Unable to disable iSCSI Target Portal Group:" |
| 385 | " %hu while active sessions exist, and force=0\n", |
| 386 | tpg->tpgt); |
| 387 | return -EPERM; |
| 388 | } |
| 389 | |
| 390 | tiqn = tpg->tpg_tiqn; |
| 391 | if (!tiqn || (tpg == iscsit_global->discovery_tpg)) |
| 392 | return 0; |
| 393 | |
| 394 | spin_lock(&tiqn->tiqn_tpg_lock); |
| 395 | tiqn->tiqn_active_tpgs--; |
| 396 | pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n", |
| 397 | tpg->tpgt); |
| 398 | spin_unlock(&tiqn->tiqn_tpg_lock); |
| 399 | |
| 400 | return 0; |
| 401 | } |
| 402 | |
| 403 | struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( |
| 404 | struct iscsi_session *sess) |
| 405 | { |
| 406 | struct se_session *se_sess = sess->se_sess; |
| 407 | struct se_node_acl *se_nacl = se_sess->se_node_acl; |
| 408 | struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl, |
| 409 | se_node_acl); |
| 410 | |
| 411 | return &acl->node_attrib; |
| 412 | } |
| 413 | |
| 414 | struct iscsi_tpg_np *iscsit_tpg_locate_child_np( |
| 415 | struct iscsi_tpg_np *tpg_np, |
| 416 | int network_transport) |
| 417 | { |
| 418 | struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; |
| 419 | |
| 420 | spin_lock(&tpg_np->tpg_np_parent_lock); |
| 421 | list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, |
| 422 | &tpg_np->tpg_np_parent_list, tpg_np_child_list) { |
| 423 | if (tpg_np_child->tpg_np->np_network_transport == |
| 424 | network_transport) { |
| 425 | spin_unlock(&tpg_np->tpg_np_parent_lock); |
| 426 | return tpg_np_child; |
| 427 | } |
| 428 | } |
| 429 | spin_unlock(&tpg_np->tpg_np_parent_lock); |
| 430 | |
| 431 | return NULL; |
| 432 | } |
| 433 | |
Nicholas Bellinger | 6e54593 | 2013-02-18 21:01:02 -0800 | [diff] [blame] | 434 | static bool iscsit_tpg_check_network_portal( |
| 435 | struct iscsi_tiqn *tiqn, |
| 436 | struct __kernel_sockaddr_storage *sockaddr, |
| 437 | int network_transport) |
| 438 | { |
| 439 | struct iscsi_portal_group *tpg; |
| 440 | struct iscsi_tpg_np *tpg_np; |
| 441 | struct iscsi_np *np; |
| 442 | bool match = false; |
| 443 | |
| 444 | spin_lock(&tiqn->tiqn_tpg_lock); |
| 445 | list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { |
| 446 | |
| 447 | spin_lock(&tpg->tpg_np_lock); |
| 448 | list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { |
| 449 | np = tpg_np->tpg_np; |
| 450 | |
| 451 | match = iscsit_check_np_match(sockaddr, np, |
| 452 | network_transport); |
| 453 | if (match == true) |
| 454 | break; |
| 455 | } |
| 456 | spin_unlock(&tpg->tpg_np_lock); |
| 457 | } |
| 458 | spin_unlock(&tiqn->tiqn_tpg_lock); |
| 459 | |
| 460 | return match; |
| 461 | } |
| 462 | |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 463 | struct iscsi_tpg_np *iscsit_tpg_add_network_portal( |
| 464 | struct iscsi_portal_group *tpg, |
| 465 | struct __kernel_sockaddr_storage *sockaddr, |
| 466 | char *ip_str, |
| 467 | struct iscsi_tpg_np *tpg_np_parent, |
| 468 | int network_transport) |
| 469 | { |
| 470 | struct iscsi_np *np; |
| 471 | struct iscsi_tpg_np *tpg_np; |
| 472 | |
Nicholas Bellinger | 6e54593 | 2013-02-18 21:01:02 -0800 | [diff] [blame] | 473 | if (!tpg_np_parent) { |
| 474 | if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, |
| 475 | network_transport) == true) { |
| 476 | pr_err("Network Portal: %s already exists on a" |
| 477 | " different TPG on %s\n", ip_str, |
| 478 | tpg->tpg_tiqn->tiqn); |
| 479 | return ERR_PTR(-EEXIST); |
| 480 | } |
| 481 | } |
| 482 | |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 483 | tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); |
| 484 | if (!tpg_np) { |
| 485 | pr_err("Unable to allocate memory for" |
| 486 | " struct iscsi_tpg_np.\n"); |
| 487 | return ERR_PTR(-ENOMEM); |
| 488 | } |
| 489 | |
| 490 | np = iscsit_add_np(sockaddr, ip_str, network_transport); |
| 491 | if (IS_ERR(np)) { |
| 492 | kfree(tpg_np); |
| 493 | return ERR_CAST(np); |
| 494 | } |
| 495 | |
| 496 | INIT_LIST_HEAD(&tpg_np->tpg_np_list); |
| 497 | INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); |
| 498 | INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); |
| 499 | spin_lock_init(&tpg_np->tpg_np_parent_lock); |
Nicholas Bellinger | d381a80 | 2013-08-15 13:40:17 -0700 | [diff] [blame] | 500 | init_completion(&tpg_np->tpg_np_comp); |
| 501 | kref_init(&tpg_np->tpg_np_kref); |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 502 | tpg_np->tpg_np = np; |
| 503 | tpg_np->tpg = tpg; |
| 504 | |
| 505 | spin_lock(&tpg->tpg_np_lock); |
| 506 | list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); |
| 507 | tpg->num_tpg_nps++; |
| 508 | if (tpg->tpg_tiqn) |
| 509 | tpg->tpg_tiqn->tiqn_num_tpg_nps++; |
| 510 | spin_unlock(&tpg->tpg_np_lock); |
| 511 | |
| 512 | if (tpg_np_parent) { |
| 513 | tpg_np->tpg_np_parent = tpg_np_parent; |
| 514 | spin_lock(&tpg_np_parent->tpg_np_parent_lock); |
| 515 | list_add_tail(&tpg_np->tpg_np_child_list, |
| 516 | &tpg_np_parent->tpg_np_parent_list); |
| 517 | spin_unlock(&tpg_np_parent->tpg_np_parent_lock); |
| 518 | } |
| 519 | |
| 520 | pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n", |
| 521 | tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, |
Nicholas Bellinger | baa4d64 | 2013-03-06 21:54:13 -0800 | [diff] [blame] | 522 | np->np_transport->name); |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 523 | |
| 524 | return tpg_np; |
| 525 | } |
| 526 | |
| 527 | static int iscsit_tpg_release_np( |
| 528 | struct iscsi_tpg_np *tpg_np, |
| 529 | struct iscsi_portal_group *tpg, |
| 530 | struct iscsi_np *np) |
| 531 | { |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 532 | iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 533 | |
| 534 | pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n", |
| 535 | tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, |
Nicholas Bellinger | baa4d64 | 2013-03-06 21:54:13 -0800 | [diff] [blame] | 536 | np->np_transport->name); |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 537 | |
| 538 | tpg_np->tpg_np = NULL; |
| 539 | tpg_np->tpg = NULL; |
| 540 | kfree(tpg_np); |
| 541 | /* |
| 542 | * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. |
| 543 | */ |
| 544 | return iscsit_del_np(np); |
| 545 | } |
| 546 | |
| 547 | int iscsit_tpg_del_network_portal( |
| 548 | struct iscsi_portal_group *tpg, |
| 549 | struct iscsi_tpg_np *tpg_np) |
| 550 | { |
| 551 | struct iscsi_np *np; |
| 552 | struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; |
| 553 | int ret = 0; |
| 554 | |
| 555 | np = tpg_np->tpg_np; |
| 556 | if (!np) { |
| 557 | pr_err("Unable to locate struct iscsi_np from" |
| 558 | " struct iscsi_tpg_np\n"); |
| 559 | return -EINVAL; |
| 560 | } |
| 561 | |
| 562 | if (!tpg_np->tpg_np_parent) { |
| 563 | /* |
| 564 | * We are the parent tpg network portal. Release all of the |
| 565 | * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent |
| 566 | * list first. |
| 567 | */ |
| 568 | list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, |
| 569 | &tpg_np->tpg_np_parent_list, |
| 570 | tpg_np_child_list) { |
| 571 | ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); |
| 572 | if (ret < 0) |
| 573 | pr_err("iscsit_tpg_del_network_portal()" |
| 574 | " failed: %d\n", ret); |
| 575 | } |
| 576 | } else { |
| 577 | /* |
| 578 | * We are not the parent ISCSI_TCP tpg network portal. Release |
| 579 | * our own network portals from the child list. |
| 580 | */ |
| 581 | spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); |
| 582 | list_del(&tpg_np->tpg_np_child_list); |
| 583 | spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); |
| 584 | } |
| 585 | |
| 586 | spin_lock(&tpg->tpg_np_lock); |
| 587 | list_del(&tpg_np->tpg_np_list); |
| 588 | tpg->num_tpg_nps--; |
| 589 | if (tpg->tpg_tiqn) |
| 590 | tpg->tpg_tiqn->tiqn_num_tpg_nps--; |
| 591 | spin_unlock(&tpg->tpg_np_lock); |
| 592 | |
| 593 | return iscsit_tpg_release_np(tpg_np, tpg, np); |
| 594 | } |
| 595 | |
| 596 | int iscsit_tpg_set_initiator_node_queue_depth( |
| 597 | struct iscsi_portal_group *tpg, |
| 598 | unsigned char *initiatorname, |
| 599 | u32 queue_depth, |
| 600 | int force) |
| 601 | { |
| 602 | return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg, |
| 603 | initiatorname, queue_depth, force); |
| 604 | } |
| 605 | |
| 606 | int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) |
| 607 | { |
| 608 | unsigned char buf1[256], buf2[256], *none = NULL; |
| 609 | int len; |
| 610 | struct iscsi_param *param; |
| 611 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
| 612 | |
| 613 | if ((authentication != 1) && (authentication != 0)) { |
| 614 | pr_err("Illegal value for authentication parameter:" |
| 615 | " %u, ignoring request.\n", authentication); |
Andy Grover | 617a0c2 | 2012-07-12 17:34:56 -0700 | [diff] [blame] | 616 | return -EINVAL; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 617 | } |
| 618 | |
| 619 | memset(buf1, 0, sizeof(buf1)); |
| 620 | memset(buf2, 0, sizeof(buf2)); |
| 621 | |
| 622 | param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); |
| 623 | if (!param) |
| 624 | return -EINVAL; |
| 625 | |
| 626 | if (authentication) { |
| 627 | snprintf(buf1, sizeof(buf1), "%s", param->value); |
| 628 | none = strstr(buf1, NONE); |
| 629 | if (!none) |
| 630 | goto out; |
| 631 | if (!strncmp(none + 4, ",", 1)) { |
| 632 | if (!strcmp(buf1, none)) |
| 633 | sprintf(buf2, "%s", none+5); |
| 634 | else { |
| 635 | none--; |
| 636 | *none = '\0'; |
| 637 | len = sprintf(buf2, "%s", buf1); |
| 638 | none += 5; |
| 639 | sprintf(buf2 + len, "%s", none); |
| 640 | } |
| 641 | } else { |
| 642 | none--; |
| 643 | *none = '\0'; |
| 644 | sprintf(buf2, "%s", buf1); |
| 645 | } |
| 646 | if (iscsi_update_param_value(param, buf2) < 0) |
| 647 | return -EINVAL; |
| 648 | } else { |
| 649 | snprintf(buf1, sizeof(buf1), "%s", param->value); |
| 650 | none = strstr(buf1, NONE); |
Andy Grover | ee1b1b9 | 2012-07-12 17:34:54 -0700 | [diff] [blame] | 651 | if (none) |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 652 | goto out; |
| 653 | strncat(buf1, ",", strlen(",")); |
| 654 | strncat(buf1, NONE, strlen(NONE)); |
| 655 | if (iscsi_update_param_value(param, buf1) < 0) |
| 656 | return -EINVAL; |
| 657 | } |
| 658 | |
| 659 | out: |
| 660 | a->authentication = authentication; |
| 661 | pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", |
| 662 | a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); |
| 663 | |
| 664 | return 0; |
| 665 | } |
| 666 | |
| 667 | int iscsit_ta_login_timeout( |
| 668 | struct iscsi_portal_group *tpg, |
| 669 | u32 login_timeout) |
| 670 | { |
| 671 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
| 672 | |
| 673 | if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { |
| 674 | pr_err("Requested Login Timeout %u larger than maximum" |
| 675 | " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); |
| 676 | return -EINVAL; |
| 677 | } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { |
| 678 | pr_err("Requested Logout Timeout %u smaller than" |
| 679 | " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); |
| 680 | return -EINVAL; |
| 681 | } |
| 682 | |
| 683 | a->login_timeout = login_timeout; |
| 684 | pr_debug("Set Logout Timeout to %u for Target Portal Group" |
| 685 | " %hu\n", a->login_timeout, tpg->tpgt); |
| 686 | |
| 687 | return 0; |
| 688 | } |
| 689 | |
| 690 | int iscsit_ta_netif_timeout( |
| 691 | struct iscsi_portal_group *tpg, |
| 692 | u32 netif_timeout) |
| 693 | { |
| 694 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
| 695 | |
| 696 | if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { |
| 697 | pr_err("Requested Network Interface Timeout %u larger" |
| 698 | " than maximum %u\n", netif_timeout, |
| 699 | TA_NETIF_TIMEOUT_MAX); |
| 700 | return -EINVAL; |
| 701 | } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { |
| 702 | pr_err("Requested Network Interface Timeout %u smaller" |
| 703 | " than minimum %u\n", netif_timeout, |
| 704 | TA_NETIF_TIMEOUT_MIN); |
| 705 | return -EINVAL; |
| 706 | } |
| 707 | |
| 708 | a->netif_timeout = netif_timeout; |
| 709 | pr_debug("Set Network Interface Timeout to %u for" |
| 710 | " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); |
| 711 | |
| 712 | return 0; |
| 713 | } |
| 714 | |
| 715 | int iscsit_ta_generate_node_acls( |
| 716 | struct iscsi_portal_group *tpg, |
| 717 | u32 flag) |
| 718 | { |
| 719 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
| 720 | |
| 721 | if ((flag != 0) && (flag != 1)) { |
| 722 | pr_err("Illegal value %d\n", flag); |
| 723 | return -EINVAL; |
| 724 | } |
| 725 | |
| 726 | a->generate_node_acls = flag; |
| 727 | pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", |
| 728 | tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); |
| 729 | |
Nicholas Bellinger | 38b11ba | 2012-09-30 12:20:02 -0700 | [diff] [blame] | 730 | if (flag == 1 && a->cache_dynamic_acls == 0) { |
| 731 | pr_debug("Explicitly setting cache_dynamic_acls=1 when " |
| 732 | "generate_node_acls=1\n"); |
| 733 | a->cache_dynamic_acls = 1; |
| 734 | } |
| 735 | |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 736 | return 0; |
| 737 | } |
| 738 | |
| 739 | int iscsit_ta_default_cmdsn_depth( |
| 740 | struct iscsi_portal_group *tpg, |
| 741 | u32 tcq_depth) |
| 742 | { |
| 743 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
| 744 | |
| 745 | if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { |
| 746 | pr_err("Requested Default Queue Depth: %u larger" |
| 747 | " than maximum %u\n", tcq_depth, |
| 748 | TA_DEFAULT_CMDSN_DEPTH_MAX); |
| 749 | return -EINVAL; |
| 750 | } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { |
| 751 | pr_err("Requested Default Queue Depth: %u smaller" |
| 752 | " than minimum %u\n", tcq_depth, |
| 753 | TA_DEFAULT_CMDSN_DEPTH_MIN); |
| 754 | return -EINVAL; |
| 755 | } |
| 756 | |
| 757 | a->default_cmdsn_depth = tcq_depth; |
| 758 | pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", |
| 759 | tpg->tpgt, a->default_cmdsn_depth); |
| 760 | |
| 761 | return 0; |
| 762 | } |
| 763 | |
| 764 | int iscsit_ta_cache_dynamic_acls( |
| 765 | struct iscsi_portal_group *tpg, |
| 766 | u32 flag) |
| 767 | { |
| 768 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
| 769 | |
| 770 | if ((flag != 0) && (flag != 1)) { |
| 771 | pr_err("Illegal value %d\n", flag); |
| 772 | return -EINVAL; |
| 773 | } |
| 774 | |
Nicholas Bellinger | 38b11ba | 2012-09-30 12:20:02 -0700 | [diff] [blame] | 775 | if (a->generate_node_acls == 1 && flag == 0) { |
| 776 | pr_debug("Skipping cache_dynamic_acls=0 when" |
| 777 | " generate_node_acls=1\n"); |
| 778 | return 0; |
| 779 | } |
| 780 | |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 781 | a->cache_dynamic_acls = flag; |
| 782 | pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" |
| 783 | " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? |
| 784 | "Enabled" : "Disabled"); |
| 785 | |
| 786 | return 0; |
| 787 | } |
| 788 | |
| 789 | int iscsit_ta_demo_mode_write_protect( |
| 790 | struct iscsi_portal_group *tpg, |
| 791 | u32 flag) |
| 792 | { |
| 793 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
| 794 | |
| 795 | if ((flag != 0) && (flag != 1)) { |
| 796 | pr_err("Illegal value %d\n", flag); |
| 797 | return -EINVAL; |
| 798 | } |
| 799 | |
| 800 | a->demo_mode_write_protect = flag; |
| 801 | pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", |
| 802 | tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); |
| 803 | |
| 804 | return 0; |
| 805 | } |
| 806 | |
| 807 | int iscsit_ta_prod_mode_write_protect( |
| 808 | struct iscsi_portal_group *tpg, |
| 809 | u32 flag) |
| 810 | { |
| 811 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
| 812 | |
| 813 | if ((flag != 0) && (flag != 1)) { |
| 814 | pr_err("Illegal value %d\n", flag); |
| 815 | return -EINVAL; |
| 816 | } |
| 817 | |
| 818 | a->prod_mode_write_protect = flag; |
| 819 | pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" |
| 820 | " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? |
| 821 | "ON" : "OFF"); |
| 822 | |
| 823 | return 0; |
| 824 | } |