Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | * Filename: target_core_tpg.c |
| 3 | * |
| 4 | * This file contains generic Target Portal Group related functions. |
| 5 | * |
| 6 | * Copyright (c) 2002, 2003, 2004, 2005 PyX Technologies, Inc. |
| 7 | * Copyright (c) 2005, 2006, 2007 SBE, Inc. |
| 8 | * Copyright (c) 2007-2010 Rising Tide Systems |
| 9 | * Copyright (c) 2008-2010 Linux-iSCSI.org |
| 10 | * |
| 11 | * Nicholas A. Bellinger <nab@kernel.org> |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 26 | * |
| 27 | ******************************************************************************/ |
| 28 | |
| 29 | #include <linux/net.h> |
| 30 | #include <linux/string.h> |
| 31 | #include <linux/timer.h> |
| 32 | #include <linux/slab.h> |
| 33 | #include <linux/spinlock.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 34 | #include <linux/in.h> |
Paul Gortmaker | c53181a | 2011-08-30 18:16:43 -0400 | [diff] [blame] | 35 | #include <linux/export.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 36 | #include <net/sock.h> |
| 37 | #include <net/tcp.h> |
| 38 | #include <scsi/scsi.h> |
| 39 | #include <scsi/scsi_cmnd.h> |
| 40 | |
| 41 | #include <target/target_core_base.h> |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 42 | #include <target/target_core_backend.h> |
| 43 | #include <target/target_core_fabric.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 44 | |
Christoph Hellwig | e26d99a | 2011-11-14 12:30:30 -0500 | [diff] [blame] | 45 | #include "target_core_internal.h" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 46 | |
| 47 | extern struct se_device *g_lun0_dev; |
| 48 | |
| 49 | static DEFINE_SPINLOCK(tpg_lock); |
| 50 | static LIST_HEAD(tpg_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 51 | |
| 52 | /* core_clear_initiator_node_from_tpg(): |
| 53 | * |
| 54 | * |
| 55 | */ |
| 56 | static void core_clear_initiator_node_from_tpg( |
| 57 | struct se_node_acl *nacl, |
| 58 | struct se_portal_group *tpg) |
| 59 | { |
| 60 | int i; |
| 61 | struct se_dev_entry *deve; |
| 62 | struct se_lun *lun; |
| 63 | struct se_lun_acl *acl, *acl_tmp; |
| 64 | |
| 65 | spin_lock_irq(&nacl->device_list_lock); |
| 66 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 67 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 68 | |
| 69 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
| 70 | continue; |
| 71 | |
| 72 | if (!deve->se_lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 73 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 74 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 75 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 76 | continue; |
| 77 | } |
| 78 | |
| 79 | lun = deve->se_lun; |
| 80 | spin_unlock_irq(&nacl->device_list_lock); |
| 81 | core_update_device_list_for_node(lun, NULL, deve->mapped_lun, |
| 82 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); |
| 83 | |
| 84 | spin_lock(&lun->lun_acl_lock); |
| 85 | list_for_each_entry_safe(acl, acl_tmp, |
| 86 | &lun->lun_acl_list, lacl_list) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 87 | if (!strcmp(acl->initiatorname, nacl->initiatorname) && |
| 88 | (acl->mapped_lun == deve->mapped_lun)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 89 | break; |
| 90 | } |
| 91 | |
| 92 | if (!acl) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 93 | pr_err("Unable to locate struct se_lun_acl for %s," |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 94 | " mapped_lun: %u\n", nacl->initiatorname, |
| 95 | deve->mapped_lun); |
| 96 | spin_unlock(&lun->lun_acl_lock); |
| 97 | spin_lock_irq(&nacl->device_list_lock); |
| 98 | continue; |
| 99 | } |
| 100 | |
| 101 | list_del(&acl->lacl_list); |
| 102 | spin_unlock(&lun->lun_acl_lock); |
| 103 | |
| 104 | spin_lock_irq(&nacl->device_list_lock); |
| 105 | kfree(acl); |
| 106 | } |
| 107 | spin_unlock_irq(&nacl->device_list_lock); |
| 108 | } |
| 109 | |
| 110 | /* __core_tpg_get_initiator_node_acl(): |
| 111 | * |
| 112 | * spin_lock_bh(&tpg->acl_node_lock); must be held when calling |
| 113 | */ |
| 114 | struct se_node_acl *__core_tpg_get_initiator_node_acl( |
| 115 | struct se_portal_group *tpg, |
| 116 | const char *initiatorname) |
| 117 | { |
| 118 | struct se_node_acl *acl; |
| 119 | |
| 120 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 121 | if (!strcmp(acl->initiatorname, initiatorname)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 122 | return acl; |
| 123 | } |
| 124 | |
| 125 | return NULL; |
| 126 | } |
| 127 | |
| 128 | /* core_tpg_get_initiator_node_acl(): |
| 129 | * |
| 130 | * |
| 131 | */ |
| 132 | struct se_node_acl *core_tpg_get_initiator_node_acl( |
| 133 | struct se_portal_group *tpg, |
| 134 | unsigned char *initiatorname) |
| 135 | { |
| 136 | struct se_node_acl *acl; |
| 137 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 138 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 139 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 140 | if (!strcmp(acl->initiatorname, initiatorname) && |
| 141 | !acl->dynamic_node_acl) { |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 142 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 143 | return acl; |
| 144 | } |
| 145 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 146 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 147 | |
| 148 | return NULL; |
| 149 | } |
| 150 | |
| 151 | /* core_tpg_add_node_to_devs(): |
| 152 | * |
| 153 | * |
| 154 | */ |
| 155 | void core_tpg_add_node_to_devs( |
| 156 | struct se_node_acl *acl, |
| 157 | struct se_portal_group *tpg) |
| 158 | { |
| 159 | int i = 0; |
| 160 | u32 lun_access = 0; |
| 161 | struct se_lun *lun; |
| 162 | struct se_device *dev; |
| 163 | |
| 164 | spin_lock(&tpg->tpg_lun_lock); |
| 165 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 166 | lun = tpg->tpg_lun_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 167 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) |
| 168 | continue; |
| 169 | |
| 170 | spin_unlock(&tpg->tpg_lun_lock); |
| 171 | |
| 172 | dev = lun->lun_se_dev; |
| 173 | /* |
| 174 | * By default in LIO-Target $FABRIC_MOD, |
| 175 | * demo_mode_write_protect is ON, or READ_ONLY; |
| 176 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 177 | if (!tpg->se_tpg_tfo->tpg_check_demo_mode_write_protect(tpg)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 178 | if (dev->dev_flags & DF_READ_ONLY) |
| 179 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 180 | else |
| 181 | lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; |
| 182 | } else { |
| 183 | /* |
| 184 | * Allow only optical drives to issue R/W in default RO |
| 185 | * demo mode. |
| 186 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 187 | if (dev->transport->get_device_type(dev) == TYPE_DISK) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 188 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 189 | else |
| 190 | lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; |
| 191 | } |
| 192 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 193 | pr_debug("TARGET_CORE[%s]->TPG[%u]_LUN[%u] - Adding %s" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 194 | " access for LUN in Demo Mode\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 195 | tpg->se_tpg_tfo->get_fabric_name(), |
| 196 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 197 | (lun_access == TRANSPORT_LUNFLAGS_READ_WRITE) ? |
| 198 | "READ-WRITE" : "READ-ONLY"); |
| 199 | |
| 200 | core_update_device_list_for_node(lun, NULL, lun->unpacked_lun, |
| 201 | lun_access, acl, tpg, 1); |
| 202 | spin_lock(&tpg->tpg_lun_lock); |
| 203 | } |
| 204 | spin_unlock(&tpg->tpg_lun_lock); |
| 205 | } |
| 206 | |
| 207 | /* core_set_queue_depth_for_node(): |
| 208 | * |
| 209 | * |
| 210 | */ |
| 211 | static int core_set_queue_depth_for_node( |
| 212 | struct se_portal_group *tpg, |
| 213 | struct se_node_acl *acl) |
| 214 | { |
| 215 | if (!acl->queue_depth) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 216 | pr_err("Queue depth for %s Initiator Node: %s is 0," |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 217 | "defaulting to 1.\n", tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 218 | acl->initiatorname); |
| 219 | acl->queue_depth = 1; |
| 220 | } |
| 221 | |
| 222 | return 0; |
| 223 | } |
| 224 | |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 225 | void array_free(void *array, int n) |
| 226 | { |
| 227 | void **a = array; |
| 228 | int i; |
| 229 | |
| 230 | for (i = 0; i < n; i++) |
| 231 | kfree(a[i]); |
| 232 | kfree(a); |
| 233 | } |
| 234 | |
| 235 | static void *array_zalloc(int n, size_t size, gfp_t flags) |
| 236 | { |
| 237 | void **a; |
| 238 | int i; |
| 239 | |
| 240 | a = kzalloc(n * sizeof(void*), flags); |
| 241 | if (!a) |
| 242 | return NULL; |
| 243 | for (i = 0; i < n; i++) { |
| 244 | a[i] = kzalloc(size, flags); |
| 245 | if (!a[i]) { |
| 246 | array_free(a, n); |
| 247 | return NULL; |
| 248 | } |
| 249 | } |
| 250 | return a; |
| 251 | } |
| 252 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 253 | /* core_create_device_list_for_node(): |
| 254 | * |
| 255 | * |
| 256 | */ |
| 257 | static int core_create_device_list_for_node(struct se_node_acl *nacl) |
| 258 | { |
| 259 | struct se_dev_entry *deve; |
| 260 | int i; |
| 261 | |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 262 | nacl->device_list = array_zalloc(TRANSPORT_MAX_LUNS_PER_TPG, |
| 263 | sizeof(struct se_dev_entry), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 264 | if (!nacl->device_list) { |
| 265 | pr_err("Unable to allocate memory for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 266 | " struct se_node_acl->device_list\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 267 | return -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 268 | } |
| 269 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 270 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 271 | |
| 272 | atomic_set(&deve->ua_count, 0); |
| 273 | atomic_set(&deve->pr_ref_count, 0); |
| 274 | spin_lock_init(&deve->ua_lock); |
| 275 | INIT_LIST_HEAD(&deve->alua_port_list); |
| 276 | INIT_LIST_HEAD(&deve->ua_list); |
| 277 | } |
| 278 | |
| 279 | return 0; |
| 280 | } |
| 281 | |
| 282 | /* core_tpg_check_initiator_node_acl() |
| 283 | * |
| 284 | * |
| 285 | */ |
| 286 | struct se_node_acl *core_tpg_check_initiator_node_acl( |
| 287 | struct se_portal_group *tpg, |
| 288 | unsigned char *initiatorname) |
| 289 | { |
| 290 | struct se_node_acl *acl; |
| 291 | |
| 292 | acl = core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 293 | if (acl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 294 | return acl; |
| 295 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 296 | if (!tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 297 | return NULL; |
| 298 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 299 | acl = tpg->se_tpg_tfo->tpg_alloc_fabric_acl(tpg); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 300 | if (!acl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 301 | return NULL; |
| 302 | |
| 303 | INIT_LIST_HEAD(&acl->acl_list); |
| 304 | INIT_LIST_HEAD(&acl->acl_sess_list); |
Nicholas Bellinger | afb999f | 2012-03-08 23:45:02 -0800 | [diff] [blame] | 305 | kref_init(&acl->acl_kref); |
Nicholas Bellinger | 0146834 | 2012-03-10 14:32:52 -0800 | [diff] [blame] | 306 | init_completion(&acl->acl_free_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 307 | spin_lock_init(&acl->device_list_lock); |
| 308 | spin_lock_init(&acl->nacl_sess_lock); |
| 309 | atomic_set(&acl->acl_pr_ref_count, 0); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 310 | acl->queue_depth = tpg->se_tpg_tfo->tpg_get_default_depth(tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 311 | snprintf(acl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); |
| 312 | acl->se_tpg = tpg; |
| 313 | acl->acl_index = scsi_get_new_index(SCSI_AUTH_INTR_INDEX); |
| 314 | spin_lock_init(&acl->stats_lock); |
| 315 | acl->dynamic_node_acl = 1; |
| 316 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 317 | tpg->se_tpg_tfo->set_default_node_attributes(acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 318 | |
| 319 | if (core_create_device_list_for_node(acl) < 0) { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 320 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 321 | return NULL; |
| 322 | } |
| 323 | |
| 324 | if (core_set_queue_depth_for_node(tpg, acl) < 0) { |
| 325 | core_free_device_list_for_node(acl, tpg); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 326 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 327 | return NULL; |
| 328 | } |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 329 | /* |
| 330 | * Here we only create demo-mode MappedLUNs from the active |
| 331 | * TPG LUNs if the fabric is not explictly asking for |
| 332 | * tpg_check_demo_mode_login_only() == 1. |
| 333 | */ |
| 334 | if ((tpg->se_tpg_tfo->tpg_check_demo_mode_login_only != NULL) && |
| 335 | (tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg) == 1)) |
| 336 | do { ; } while (0); |
| 337 | else |
| 338 | core_tpg_add_node_to_devs(acl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 339 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 340 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 341 | list_add_tail(&acl->acl_list, &tpg->acl_node_list); |
| 342 | tpg->num_node_acls++; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 343 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 344 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 345 | pr_debug("%s_TPG[%u] - Added DYNAMIC ACL with TCQ Depth: %d for %s" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 346 | " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 347 | tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth, |
| 348 | tpg->se_tpg_tfo->get_fabric_name(), initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 349 | |
| 350 | return acl; |
| 351 | } |
| 352 | EXPORT_SYMBOL(core_tpg_check_initiator_node_acl); |
| 353 | |
| 354 | void core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *nacl) |
| 355 | { |
| 356 | while (atomic_read(&nacl->acl_pr_ref_count) != 0) |
| 357 | cpu_relax(); |
| 358 | } |
| 359 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 360 | void core_tpg_clear_object_luns(struct se_portal_group *tpg) |
| 361 | { |
Jörn Engel | 2816890 | 2012-03-15 15:06:58 -0400 | [diff] [blame] | 362 | int i; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 363 | struct se_lun *lun; |
| 364 | |
| 365 | spin_lock(&tpg->tpg_lun_lock); |
| 366 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 367 | lun = tpg->tpg_lun_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 368 | |
| 369 | if ((lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) || |
| 370 | (lun->lun_se_dev == NULL)) |
| 371 | continue; |
| 372 | |
| 373 | spin_unlock(&tpg->tpg_lun_lock); |
Jörn Engel | 2816890 | 2012-03-15 15:06:58 -0400 | [diff] [blame] | 374 | core_dev_del_lun(tpg, lun->unpacked_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 375 | spin_lock(&tpg->tpg_lun_lock); |
| 376 | } |
| 377 | spin_unlock(&tpg->tpg_lun_lock); |
| 378 | } |
| 379 | EXPORT_SYMBOL(core_tpg_clear_object_luns); |
| 380 | |
| 381 | /* core_tpg_add_initiator_node_acl(): |
| 382 | * |
| 383 | * |
| 384 | */ |
| 385 | struct se_node_acl *core_tpg_add_initiator_node_acl( |
| 386 | struct se_portal_group *tpg, |
| 387 | struct se_node_acl *se_nacl, |
| 388 | const char *initiatorname, |
| 389 | u32 queue_depth) |
| 390 | { |
| 391 | struct se_node_acl *acl = NULL; |
| 392 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 393 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 394 | acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 395 | if (acl) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 396 | if (acl->dynamic_node_acl) { |
| 397 | acl->dynamic_node_acl = 0; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 398 | pr_debug("%s_TPG[%u] - Replacing dynamic ACL" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 399 | " for %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 400 | tpg->se_tpg_tfo->tpg_get_tag(tpg), initiatorname); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 401 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 402 | /* |
| 403 | * Release the locally allocated struct se_node_acl |
| 404 | * because * core_tpg_add_initiator_node_acl() returned |
| 405 | * a pointer to an existing demo mode node ACL. |
| 406 | */ |
| 407 | if (se_nacl) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 408 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 409 | se_nacl); |
| 410 | goto done; |
| 411 | } |
| 412 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 413 | pr_err("ACL entry for %s Initiator" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 414 | " Node %s already exists for TPG %u, ignoring" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 415 | " request.\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 416 | initiatorname, tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 417 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 418 | return ERR_PTR(-EEXIST); |
| 419 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 420 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 421 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 422 | if (!se_nacl) { |
| 423 | pr_err("struct se_node_acl pointer is NULL\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 424 | return ERR_PTR(-EINVAL); |
| 425 | } |
| 426 | /* |
| 427 | * For v4.x logic the se_node_acl_s is hanging off a fabric |
| 428 | * dependent structure allocated via |
| 429 | * struct target_core_fabric_ops->fabric_make_nodeacl() |
| 430 | */ |
| 431 | acl = se_nacl; |
| 432 | |
| 433 | INIT_LIST_HEAD(&acl->acl_list); |
| 434 | INIT_LIST_HEAD(&acl->acl_sess_list); |
Nicholas Bellinger | afb999f | 2012-03-08 23:45:02 -0800 | [diff] [blame] | 435 | kref_init(&acl->acl_kref); |
Nicholas Bellinger | 0146834 | 2012-03-10 14:32:52 -0800 | [diff] [blame] | 436 | init_completion(&acl->acl_free_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 437 | spin_lock_init(&acl->device_list_lock); |
| 438 | spin_lock_init(&acl->nacl_sess_lock); |
| 439 | atomic_set(&acl->acl_pr_ref_count, 0); |
| 440 | acl->queue_depth = queue_depth; |
| 441 | snprintf(acl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); |
| 442 | acl->se_tpg = tpg; |
| 443 | acl->acl_index = scsi_get_new_index(SCSI_AUTH_INTR_INDEX); |
| 444 | spin_lock_init(&acl->stats_lock); |
| 445 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 446 | tpg->se_tpg_tfo->set_default_node_attributes(acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 447 | |
| 448 | if (core_create_device_list_for_node(acl) < 0) { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 449 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 450 | return ERR_PTR(-ENOMEM); |
| 451 | } |
| 452 | |
| 453 | if (core_set_queue_depth_for_node(tpg, acl) < 0) { |
| 454 | core_free_device_list_for_node(acl, tpg); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 455 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 456 | return ERR_PTR(-EINVAL); |
| 457 | } |
| 458 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 459 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 460 | list_add_tail(&acl->acl_list, &tpg->acl_node_list); |
| 461 | tpg->num_node_acls++; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 462 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 463 | |
| 464 | done: |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 465 | pr_debug("%s_TPG[%hu] - Added ACL with TCQ Depth: %d for %s" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 466 | " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 467 | tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth, |
| 468 | tpg->se_tpg_tfo->get_fabric_name(), initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 469 | |
| 470 | return acl; |
| 471 | } |
| 472 | EXPORT_SYMBOL(core_tpg_add_initiator_node_acl); |
| 473 | |
| 474 | /* core_tpg_del_initiator_node_acl(): |
| 475 | * |
| 476 | * |
| 477 | */ |
| 478 | int core_tpg_del_initiator_node_acl( |
| 479 | struct se_portal_group *tpg, |
| 480 | struct se_node_acl *acl, |
| 481 | int force) |
| 482 | { |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 483 | LIST_HEAD(sess_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 484 | struct se_session *sess, *sess_tmp; |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 485 | unsigned long flags; |
Jörn Engel | 2816890 | 2012-03-15 15:06:58 -0400 | [diff] [blame] | 486 | int rc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 487 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 488 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 489 | if (acl->dynamic_node_acl) { |
| 490 | acl->dynamic_node_acl = 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 491 | } |
| 492 | list_del(&acl->acl_list); |
| 493 | tpg->num_node_acls--; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 494 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 495 | |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 496 | spin_lock_irqsave(&acl->nacl_sess_lock, flags); |
| 497 | acl->acl_stop = 1; |
| 498 | |
| 499 | list_for_each_entry_safe(sess, sess_tmp, &acl->acl_sess_list, |
| 500 | sess_acl_list) { |
| 501 | if (sess->sess_tearing_down != 0) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 502 | continue; |
| 503 | |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 504 | target_get_session(sess); |
| 505 | list_move(&sess->sess_acl_list, &sess_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 506 | } |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 507 | spin_unlock_irqrestore(&acl->nacl_sess_lock, flags); |
| 508 | |
| 509 | list_for_each_entry_safe(sess, sess_tmp, &sess_list, sess_acl_list) { |
| 510 | list_del(&sess->sess_acl_list); |
| 511 | |
| 512 | rc = tpg->se_tpg_tfo->shutdown_session(sess); |
| 513 | target_put_session(sess); |
| 514 | if (!rc) |
| 515 | continue; |
| 516 | target_put_session(sess); |
| 517 | } |
| 518 | target_put_nacl(acl); |
| 519 | /* |
| 520 | * Wait for last target_put_nacl() to complete in target_complete_nacl() |
| 521 | * for active fabric session transport_deregister_session() callbacks. |
| 522 | */ |
| 523 | wait_for_completion(&acl->acl_free_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 524 | |
| 525 | core_tpg_wait_for_nacl_pr_ref(acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 526 | core_clear_initiator_node_from_tpg(acl, tpg); |
| 527 | core_free_device_list_for_node(acl, tpg); |
| 528 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 529 | pr_debug("%s_TPG[%hu] - Deleted ACL with TCQ Depth: %d for %s" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 530 | " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 531 | tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth, |
| 532 | tpg->se_tpg_tfo->get_fabric_name(), acl->initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 533 | |
| 534 | return 0; |
| 535 | } |
| 536 | EXPORT_SYMBOL(core_tpg_del_initiator_node_acl); |
| 537 | |
| 538 | /* core_tpg_set_initiator_node_queue_depth(): |
| 539 | * |
| 540 | * |
| 541 | */ |
| 542 | int core_tpg_set_initiator_node_queue_depth( |
| 543 | struct se_portal_group *tpg, |
| 544 | unsigned char *initiatorname, |
| 545 | u32 queue_depth, |
| 546 | int force) |
| 547 | { |
| 548 | struct se_session *sess, *init_sess = NULL; |
| 549 | struct se_node_acl *acl; |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 550 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 551 | int dynamic_acl = 0; |
| 552 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 553 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 554 | acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 555 | if (!acl) { |
| 556 | pr_err("Access Control List entry for %s Initiator" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 557 | " Node %s does not exists for TPG %hu, ignoring" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 558 | " request.\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 559 | initiatorname, tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 560 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 561 | return -ENODEV; |
| 562 | } |
| 563 | if (acl->dynamic_node_acl) { |
| 564 | acl->dynamic_node_acl = 0; |
| 565 | dynamic_acl = 1; |
| 566 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 567 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 568 | |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 569 | spin_lock_irqsave(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 570 | list_for_each_entry(sess, &tpg->tpg_sess_list, sess_list) { |
| 571 | if (sess->se_node_acl != acl) |
| 572 | continue; |
| 573 | |
| 574 | if (!force) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 575 | pr_err("Unable to change queue depth for %s" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 576 | " Initiator Node: %s while session is" |
| 577 | " operational. To forcefully change the queue" |
| 578 | " depth and force session reinstatement" |
| 579 | " use the \"force=1\" parameter.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 580 | tpg->se_tpg_tfo->get_fabric_name(), initiatorname); |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 581 | spin_unlock_irqrestore(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 582 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 583 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 584 | if (dynamic_acl) |
| 585 | acl->dynamic_node_acl = 1; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 586 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 587 | return -EEXIST; |
| 588 | } |
| 589 | /* |
| 590 | * Determine if the session needs to be closed by our context. |
| 591 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 592 | if (!tpg->se_tpg_tfo->shutdown_session(sess)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 593 | continue; |
| 594 | |
| 595 | init_sess = sess; |
| 596 | break; |
| 597 | } |
| 598 | |
| 599 | /* |
| 600 | * User has requested to change the queue depth for a Initiator Node. |
| 601 | * Change the value in the Node's struct se_node_acl, and call |
| 602 | * core_set_queue_depth_for_node() to add the requested queue depth. |
| 603 | * |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 604 | * Finally call tpg->se_tpg_tfo->close_session() to force session |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 605 | * reinstatement to occur if there is an active session for the |
| 606 | * $FABRIC_MOD Initiator Node in question. |
| 607 | */ |
| 608 | acl->queue_depth = queue_depth; |
| 609 | |
| 610 | if (core_set_queue_depth_for_node(tpg, acl) < 0) { |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 611 | spin_unlock_irqrestore(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 612 | /* |
| 613 | * Force session reinstatement if |
| 614 | * core_set_queue_depth_for_node() failed, because we assume |
| 615 | * the $FABRIC_MOD has already the set session reinstatement |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 616 | * bit from tpg->se_tpg_tfo->shutdown_session() called above. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 617 | */ |
| 618 | if (init_sess) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 619 | tpg->se_tpg_tfo->close_session(init_sess); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 620 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 621 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 622 | if (dynamic_acl) |
| 623 | acl->dynamic_node_acl = 1; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 624 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 625 | return -EINVAL; |
| 626 | } |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 627 | spin_unlock_irqrestore(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 628 | /* |
| 629 | * If the $FABRIC_MOD session for the Initiator Node ACL exists, |
| 630 | * forcefully shutdown the $FABRIC_MOD session/nexus. |
| 631 | */ |
| 632 | if (init_sess) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 633 | tpg->se_tpg_tfo->close_session(init_sess); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 634 | |
Joe Perches | bfb9035 | 2011-08-17 06:58:04 -0700 | [diff] [blame] | 635 | pr_debug("Successfully changed queue depth to: %d for Initiator" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 636 | " Node: %s on %s Target Portal Group: %u\n", queue_depth, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 637 | initiatorname, tpg->se_tpg_tfo->get_fabric_name(), |
| 638 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 639 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 640 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 641 | if (dynamic_acl) |
| 642 | acl->dynamic_node_acl = 1; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 643 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 644 | |
| 645 | return 0; |
| 646 | } |
| 647 | EXPORT_SYMBOL(core_tpg_set_initiator_node_queue_depth); |
| 648 | |
| 649 | static int core_tpg_setup_virtual_lun0(struct se_portal_group *se_tpg) |
| 650 | { |
| 651 | /* Set in core_dev_setup_virtual_lun0() */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 652 | struct se_device *dev = g_lun0_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 653 | struct se_lun *lun = &se_tpg->tpg_virt_lun0; |
| 654 | u32 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 655 | int ret; |
| 656 | |
| 657 | lun->unpacked_lun = 0; |
| 658 | lun->lun_status = TRANSPORT_LUN_STATUS_FREE; |
| 659 | atomic_set(&lun->lun_acl_count, 0); |
| 660 | init_completion(&lun->lun_shutdown_comp); |
| 661 | INIT_LIST_HEAD(&lun->lun_acl_list); |
| 662 | INIT_LIST_HEAD(&lun->lun_cmd_list); |
| 663 | spin_lock_init(&lun->lun_acl_lock); |
| 664 | spin_lock_init(&lun->lun_cmd_lock); |
| 665 | spin_lock_init(&lun->lun_sep_lock); |
| 666 | |
| 667 | ret = core_tpg_post_addlun(se_tpg, lun, lun_access, dev); |
| 668 | if (ret < 0) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 669 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 670 | |
| 671 | return 0; |
| 672 | } |
| 673 | |
| 674 | static void core_tpg_release_virtual_lun0(struct se_portal_group *se_tpg) |
| 675 | { |
| 676 | struct se_lun *lun = &se_tpg->tpg_virt_lun0; |
| 677 | |
| 678 | core_tpg_post_dellun(se_tpg, lun); |
| 679 | } |
| 680 | |
| 681 | int core_tpg_register( |
| 682 | struct target_core_fabric_ops *tfo, |
| 683 | struct se_wwn *se_wwn, |
| 684 | struct se_portal_group *se_tpg, |
| 685 | void *tpg_fabric_ptr, |
| 686 | int se_tpg_type) |
| 687 | { |
| 688 | struct se_lun *lun; |
| 689 | u32 i; |
| 690 | |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 691 | se_tpg->tpg_lun_list = array_zalloc(TRANSPORT_MAX_LUNS_PER_TPG, |
| 692 | sizeof(struct se_lun), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 693 | if (!se_tpg->tpg_lun_list) { |
| 694 | pr_err("Unable to allocate struct se_portal_group->" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 695 | "tpg_lun_list\n"); |
| 696 | return -ENOMEM; |
| 697 | } |
| 698 | |
| 699 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 700 | lun = se_tpg->tpg_lun_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 701 | lun->unpacked_lun = i; |
| 702 | lun->lun_status = TRANSPORT_LUN_STATUS_FREE; |
| 703 | atomic_set(&lun->lun_acl_count, 0); |
| 704 | init_completion(&lun->lun_shutdown_comp); |
| 705 | INIT_LIST_HEAD(&lun->lun_acl_list); |
| 706 | INIT_LIST_HEAD(&lun->lun_cmd_list); |
| 707 | spin_lock_init(&lun->lun_acl_lock); |
| 708 | spin_lock_init(&lun->lun_cmd_lock); |
| 709 | spin_lock_init(&lun->lun_sep_lock); |
| 710 | } |
| 711 | |
| 712 | se_tpg->se_tpg_type = se_tpg_type; |
| 713 | se_tpg->se_tpg_fabric_ptr = tpg_fabric_ptr; |
| 714 | se_tpg->se_tpg_tfo = tfo; |
| 715 | se_tpg->se_tpg_wwn = se_wwn; |
| 716 | atomic_set(&se_tpg->tpg_pr_ref_count, 0); |
| 717 | INIT_LIST_HEAD(&se_tpg->acl_node_list); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 718 | INIT_LIST_HEAD(&se_tpg->se_tpg_node); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 719 | INIT_LIST_HEAD(&se_tpg->tpg_sess_list); |
| 720 | spin_lock_init(&se_tpg->acl_node_lock); |
| 721 | spin_lock_init(&se_tpg->session_lock); |
| 722 | spin_lock_init(&se_tpg->tpg_lun_lock); |
| 723 | |
| 724 | if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) { |
| 725 | if (core_tpg_setup_virtual_lun0(se_tpg) < 0) { |
| 726 | kfree(se_tpg); |
| 727 | return -ENOMEM; |
| 728 | } |
| 729 | } |
| 730 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 731 | spin_lock_bh(&tpg_lock); |
| 732 | list_add_tail(&se_tpg->se_tpg_node, &tpg_list); |
| 733 | spin_unlock_bh(&tpg_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 734 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 735 | pr_debug("TARGET_CORE[%s]: Allocated %s struct se_portal_group for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 736 | " endpoint: %s, Portal Tag: %u\n", tfo->get_fabric_name(), |
| 737 | (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) ? |
| 738 | "Normal" : "Discovery", (tfo->tpg_get_wwn(se_tpg) == NULL) ? |
| 739 | "None" : tfo->tpg_get_wwn(se_tpg), tfo->tpg_get_tag(se_tpg)); |
| 740 | |
| 741 | return 0; |
| 742 | } |
| 743 | EXPORT_SYMBOL(core_tpg_register); |
| 744 | |
| 745 | int core_tpg_deregister(struct se_portal_group *se_tpg) |
| 746 | { |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 747 | struct se_node_acl *nacl, *nacl_tmp; |
| 748 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 749 | pr_debug("TARGET_CORE[%s]: Deallocating %s struct se_portal_group" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 750 | " for endpoint: %s Portal Tag %u\n", |
| 751 | (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) ? |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 752 | "Normal" : "Discovery", se_tpg->se_tpg_tfo->get_fabric_name(), |
| 753 | se_tpg->se_tpg_tfo->tpg_get_wwn(se_tpg), |
| 754 | se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 755 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 756 | spin_lock_bh(&tpg_lock); |
| 757 | list_del(&se_tpg->se_tpg_node); |
| 758 | spin_unlock_bh(&tpg_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 759 | |
| 760 | while (atomic_read(&se_tpg->tpg_pr_ref_count) != 0) |
| 761 | cpu_relax(); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 762 | /* |
| 763 | * Release any remaining demo-mode generated se_node_acl that have |
| 764 | * not been released because of TFO->tpg_check_demo_mode_cache() == 1 |
| 765 | * in transport_deregister_session(). |
| 766 | */ |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 767 | spin_lock_irq(&se_tpg->acl_node_lock); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 768 | list_for_each_entry_safe(nacl, nacl_tmp, &se_tpg->acl_node_list, |
| 769 | acl_list) { |
| 770 | list_del(&nacl->acl_list); |
| 771 | se_tpg->num_node_acls--; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 772 | spin_unlock_irq(&se_tpg->acl_node_lock); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 773 | |
| 774 | core_tpg_wait_for_nacl_pr_ref(nacl); |
| 775 | core_free_device_list_for_node(nacl, se_tpg); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 776 | se_tpg->se_tpg_tfo->tpg_release_fabric_acl(se_tpg, nacl); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 777 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 778 | spin_lock_irq(&se_tpg->acl_node_lock); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 779 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 780 | spin_unlock_irq(&se_tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 781 | |
| 782 | if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) |
| 783 | core_tpg_release_virtual_lun0(se_tpg); |
| 784 | |
| 785 | se_tpg->se_tpg_fabric_ptr = NULL; |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 786 | array_free(se_tpg->tpg_lun_list, TRANSPORT_MAX_LUNS_PER_TPG); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 787 | return 0; |
| 788 | } |
| 789 | EXPORT_SYMBOL(core_tpg_deregister); |
| 790 | |
| 791 | struct se_lun *core_tpg_pre_addlun( |
| 792 | struct se_portal_group *tpg, |
| 793 | u32 unpacked_lun) |
| 794 | { |
| 795 | struct se_lun *lun; |
| 796 | |
| 797 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 798 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER_TPG" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 799 | "-1: %u for Target Portal Group: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 800 | tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 801 | unpacked_lun, TRANSPORT_MAX_LUNS_PER_TPG-1, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 802 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 803 | return ERR_PTR(-EOVERFLOW); |
| 804 | } |
| 805 | |
| 806 | spin_lock(&tpg->tpg_lun_lock); |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 807 | lun = tpg->tpg_lun_list[unpacked_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 808 | if (lun->lun_status == TRANSPORT_LUN_STATUS_ACTIVE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 809 | pr_err("TPG Logical Unit Number: %u is already active" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 810 | " on %s Target Portal Group: %u, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 811 | unpacked_lun, tpg->se_tpg_tfo->get_fabric_name(), |
| 812 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 813 | spin_unlock(&tpg->tpg_lun_lock); |
| 814 | return ERR_PTR(-EINVAL); |
| 815 | } |
| 816 | spin_unlock(&tpg->tpg_lun_lock); |
| 817 | |
| 818 | return lun; |
| 819 | } |
| 820 | |
| 821 | int core_tpg_post_addlun( |
| 822 | struct se_portal_group *tpg, |
| 823 | struct se_lun *lun, |
| 824 | u32 lun_access, |
| 825 | void *lun_ptr) |
| 826 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 827 | int ret; |
| 828 | |
| 829 | ret = core_dev_export(lun_ptr, tpg, lun); |
| 830 | if (ret < 0) |
| 831 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 832 | |
| 833 | spin_lock(&tpg->tpg_lun_lock); |
| 834 | lun->lun_access = lun_access; |
| 835 | lun->lun_status = TRANSPORT_LUN_STATUS_ACTIVE; |
| 836 | spin_unlock(&tpg->tpg_lun_lock); |
| 837 | |
| 838 | return 0; |
| 839 | } |
| 840 | |
| 841 | static void core_tpg_shutdown_lun( |
| 842 | struct se_portal_group *tpg, |
| 843 | struct se_lun *lun) |
| 844 | { |
| 845 | core_clear_lun_from_tpg(lun, tpg); |
| 846 | transport_clear_lun_from_sessions(lun); |
| 847 | } |
| 848 | |
| 849 | struct se_lun *core_tpg_pre_dellun( |
| 850 | struct se_portal_group *tpg, |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 851 | u32 unpacked_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 852 | { |
| 853 | struct se_lun *lun; |
| 854 | |
| 855 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 856 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER_TPG" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 857 | "-1: %u for Target Portal Group: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 858 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 859 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 860 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 861 | return ERR_PTR(-EOVERFLOW); |
| 862 | } |
| 863 | |
| 864 | spin_lock(&tpg->tpg_lun_lock); |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 865 | lun = tpg->tpg_lun_list[unpacked_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 866 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 867 | pr_err("%s Logical Unit Number: %u is not active on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 868 | " Target Portal Group: %u, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 869 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
| 870 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 871 | spin_unlock(&tpg->tpg_lun_lock); |
| 872 | return ERR_PTR(-ENODEV); |
| 873 | } |
| 874 | spin_unlock(&tpg->tpg_lun_lock); |
| 875 | |
| 876 | return lun; |
| 877 | } |
| 878 | |
| 879 | int core_tpg_post_dellun( |
| 880 | struct se_portal_group *tpg, |
| 881 | struct se_lun *lun) |
| 882 | { |
| 883 | core_tpg_shutdown_lun(tpg, lun); |
| 884 | |
| 885 | core_dev_unexport(lun->lun_se_dev, tpg, lun); |
| 886 | |
| 887 | spin_lock(&tpg->tpg_lun_lock); |
| 888 | lun->lun_status = TRANSPORT_LUN_STATUS_FREE; |
| 889 | spin_unlock(&tpg->tpg_lun_lock); |
| 890 | |
| 891 | return 0; |
| 892 | } |