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 | * |
Nicholas Bellinger | 4c76251 | 2013-09-05 15:29:12 -0700 | [diff] [blame] | 6 | * (c) Copyright 2002-2013 Datera, Inc. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 7 | * |
| 8 | * Nicholas A. Bellinger <nab@kernel.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 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 23 | * |
| 24 | ******************************************************************************/ |
| 25 | |
| 26 | #include <linux/net.h> |
| 27 | #include <linux/string.h> |
| 28 | #include <linux/timer.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/spinlock.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 31 | #include <linux/in.h> |
Paul Gortmaker | c53181a | 2011-08-30 18:16:43 -0400 | [diff] [blame] | 32 | #include <linux/export.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 33 | #include <net/sock.h> |
| 34 | #include <net/tcp.h> |
| 35 | #include <scsi/scsi.h> |
| 36 | #include <scsi/scsi_cmnd.h> |
| 37 | |
| 38 | #include <target/target_core_base.h> |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 39 | #include <target/target_core_backend.h> |
| 40 | #include <target/target_core_fabric.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 41 | |
Christoph Hellwig | e26d99a | 2011-11-14 12:30:30 -0500 | [diff] [blame] | 42 | #include "target_core_internal.h" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 43 | |
| 44 | extern struct se_device *g_lun0_dev; |
| 45 | |
| 46 | static DEFINE_SPINLOCK(tpg_lock); |
| 47 | static LIST_HEAD(tpg_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 48 | |
| 49 | /* core_clear_initiator_node_from_tpg(): |
| 50 | * |
| 51 | * |
| 52 | */ |
| 53 | static void core_clear_initiator_node_from_tpg( |
| 54 | struct se_node_acl *nacl, |
| 55 | struct se_portal_group *tpg) |
| 56 | { |
| 57 | int i; |
| 58 | struct se_dev_entry *deve; |
| 59 | struct se_lun *lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 60 | |
| 61 | spin_lock_irq(&nacl->device_list_lock); |
| 62 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 63 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 64 | |
| 65 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
| 66 | continue; |
| 67 | |
| 68 | if (!deve->se_lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 69 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 70 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 71 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 72 | continue; |
| 73 | } |
| 74 | |
| 75 | lun = deve->se_lun; |
| 76 | spin_unlock_irq(&nacl->device_list_lock); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 77 | core_disable_device_list_for_node(lun, NULL, deve->mapped_lun, |
| 78 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 79 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 80 | spin_lock_irq(&nacl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 81 | } |
| 82 | spin_unlock_irq(&nacl->device_list_lock); |
| 83 | } |
| 84 | |
| 85 | /* __core_tpg_get_initiator_node_acl(): |
| 86 | * |
| 87 | * spin_lock_bh(&tpg->acl_node_lock); must be held when calling |
| 88 | */ |
| 89 | struct se_node_acl *__core_tpg_get_initiator_node_acl( |
| 90 | struct se_portal_group *tpg, |
| 91 | const char *initiatorname) |
| 92 | { |
| 93 | struct se_node_acl *acl; |
| 94 | |
| 95 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 96 | if (!strcmp(acl->initiatorname, initiatorname)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 97 | return acl; |
| 98 | } |
| 99 | |
| 100 | return NULL; |
| 101 | } |
| 102 | |
| 103 | /* core_tpg_get_initiator_node_acl(): |
| 104 | * |
| 105 | * |
| 106 | */ |
| 107 | struct se_node_acl *core_tpg_get_initiator_node_acl( |
| 108 | struct se_portal_group *tpg, |
| 109 | unsigned char *initiatorname) |
| 110 | { |
| 111 | struct se_node_acl *acl; |
| 112 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 113 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | fcf2948 | 2013-02-18 18:00:33 -0800 | [diff] [blame] | 114 | acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 115 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 116 | |
Nicholas Bellinger | fcf2948 | 2013-02-18 18:00:33 -0800 | [diff] [blame] | 117 | return acl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | /* core_tpg_add_node_to_devs(): |
| 121 | * |
| 122 | * |
| 123 | */ |
| 124 | void core_tpg_add_node_to_devs( |
| 125 | struct se_node_acl *acl, |
| 126 | struct se_portal_group *tpg) |
| 127 | { |
| 128 | int i = 0; |
| 129 | u32 lun_access = 0; |
| 130 | struct se_lun *lun; |
| 131 | struct se_device *dev; |
| 132 | |
| 133 | spin_lock(&tpg->tpg_lun_lock); |
| 134 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 135 | lun = tpg->tpg_lun_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 136 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) |
| 137 | continue; |
| 138 | |
| 139 | spin_unlock(&tpg->tpg_lun_lock); |
| 140 | |
| 141 | dev = lun->lun_se_dev; |
| 142 | /* |
| 143 | * By default in LIO-Target $FABRIC_MOD, |
| 144 | * demo_mode_write_protect is ON, or READ_ONLY; |
| 145 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 146 | if (!tpg->se_tpg_tfo->tpg_check_demo_mode_write_protect(tpg)) { |
Nicholas Bellinger | 58d9261 | 2012-03-20 21:26:48 -0700 | [diff] [blame] | 147 | lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 148 | } else { |
| 149 | /* |
| 150 | * Allow only optical drives to issue R/W in default RO |
| 151 | * demo mode. |
| 152 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 153 | if (dev->transport->get_device_type(dev) == TYPE_DISK) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 154 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 155 | else |
| 156 | lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; |
| 157 | } |
| 158 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 159 | pr_debug("TARGET_CORE[%s]->TPG[%u]_LUN[%u] - Adding %s" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 160 | " access for LUN in Demo Mode\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 161 | tpg->se_tpg_tfo->get_fabric_name(), |
| 162 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 163 | (lun_access == TRANSPORT_LUNFLAGS_READ_WRITE) ? |
| 164 | "READ-WRITE" : "READ-ONLY"); |
| 165 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 166 | core_enable_device_list_for_node(lun, NULL, lun->unpacked_lun, |
| 167 | lun_access, acl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 168 | spin_lock(&tpg->tpg_lun_lock); |
| 169 | } |
| 170 | spin_unlock(&tpg->tpg_lun_lock); |
| 171 | } |
| 172 | |
| 173 | /* core_set_queue_depth_for_node(): |
| 174 | * |
| 175 | * |
| 176 | */ |
| 177 | static int core_set_queue_depth_for_node( |
| 178 | struct se_portal_group *tpg, |
| 179 | struct se_node_acl *acl) |
| 180 | { |
| 181 | if (!acl->queue_depth) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 182 | pr_err("Queue depth for %s Initiator Node: %s is 0," |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 183 | "defaulting to 1.\n", tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 184 | acl->initiatorname); |
| 185 | acl->queue_depth = 1; |
| 186 | } |
| 187 | |
| 188 | return 0; |
| 189 | } |
| 190 | |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 191 | void array_free(void *array, int n) |
| 192 | { |
| 193 | void **a = array; |
| 194 | int i; |
| 195 | |
| 196 | for (i = 0; i < n; i++) |
| 197 | kfree(a[i]); |
| 198 | kfree(a); |
| 199 | } |
| 200 | |
| 201 | static void *array_zalloc(int n, size_t size, gfp_t flags) |
| 202 | { |
| 203 | void **a; |
| 204 | int i; |
| 205 | |
| 206 | a = kzalloc(n * sizeof(void*), flags); |
| 207 | if (!a) |
| 208 | return NULL; |
| 209 | for (i = 0; i < n; i++) { |
| 210 | a[i] = kzalloc(size, flags); |
| 211 | if (!a[i]) { |
| 212 | array_free(a, n); |
| 213 | return NULL; |
| 214 | } |
| 215 | } |
| 216 | return a; |
| 217 | } |
| 218 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 219 | /* core_create_device_list_for_node(): |
| 220 | * |
| 221 | * |
| 222 | */ |
| 223 | static int core_create_device_list_for_node(struct se_node_acl *nacl) |
| 224 | { |
| 225 | struct se_dev_entry *deve; |
| 226 | int i; |
| 227 | |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 228 | nacl->device_list = array_zalloc(TRANSPORT_MAX_LUNS_PER_TPG, |
| 229 | sizeof(struct se_dev_entry), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 230 | if (!nacl->device_list) { |
| 231 | pr_err("Unable to allocate memory for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 232 | " struct se_node_acl->device_list\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 233 | return -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 234 | } |
| 235 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 236 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 237 | |
| 238 | atomic_set(&deve->ua_count, 0); |
| 239 | atomic_set(&deve->pr_ref_count, 0); |
| 240 | spin_lock_init(&deve->ua_lock); |
| 241 | INIT_LIST_HEAD(&deve->alua_port_list); |
| 242 | INIT_LIST_HEAD(&deve->ua_list); |
| 243 | } |
| 244 | |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | /* core_tpg_check_initiator_node_acl() |
| 249 | * |
| 250 | * |
| 251 | */ |
| 252 | struct se_node_acl *core_tpg_check_initiator_node_acl( |
| 253 | struct se_portal_group *tpg, |
| 254 | unsigned char *initiatorname) |
| 255 | { |
| 256 | struct se_node_acl *acl; |
| 257 | |
| 258 | acl = core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 259 | if (acl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 260 | return acl; |
| 261 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 262 | if (!tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 263 | return NULL; |
| 264 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 265 | acl = tpg->se_tpg_tfo->tpg_alloc_fabric_acl(tpg); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 266 | if (!acl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 267 | return NULL; |
| 268 | |
| 269 | INIT_LIST_HEAD(&acl->acl_list); |
| 270 | INIT_LIST_HEAD(&acl->acl_sess_list); |
Nicholas Bellinger | afb999f | 2012-03-08 23:45:02 -0800 | [diff] [blame] | 271 | kref_init(&acl->acl_kref); |
Nicholas Bellinger | 0146834 | 2012-03-10 14:32:52 -0800 | [diff] [blame] | 272 | init_completion(&acl->acl_free_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 273 | spin_lock_init(&acl->device_list_lock); |
| 274 | spin_lock_init(&acl->nacl_sess_lock); |
| 275 | atomic_set(&acl->acl_pr_ref_count, 0); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 276 | acl->queue_depth = tpg->se_tpg_tfo->tpg_get_default_depth(tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 277 | snprintf(acl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); |
| 278 | acl->se_tpg = tpg; |
| 279 | acl->acl_index = scsi_get_new_index(SCSI_AUTH_INTR_INDEX); |
| 280 | spin_lock_init(&acl->stats_lock); |
| 281 | acl->dynamic_node_acl = 1; |
| 282 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 283 | tpg->se_tpg_tfo->set_default_node_attributes(acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 284 | |
| 285 | if (core_create_device_list_for_node(acl) < 0) { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 286 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 287 | return NULL; |
| 288 | } |
| 289 | |
| 290 | if (core_set_queue_depth_for_node(tpg, acl) < 0) { |
| 291 | core_free_device_list_for_node(acl, tpg); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 292 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 293 | return NULL; |
| 294 | } |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 295 | /* |
| 296 | * Here we only create demo-mode MappedLUNs from the active |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 297 | * TPG LUNs if the fabric is not explicitly asking for |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 298 | * tpg_check_demo_mode_login_only() == 1. |
| 299 | */ |
Andy Grover | cdf88a2 | 2012-07-12 17:34:57 -0700 | [diff] [blame] | 300 | if ((tpg->se_tpg_tfo->tpg_check_demo_mode_login_only == NULL) || |
| 301 | (tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg) != 1)) |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 302 | core_tpg_add_node_to_devs(acl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 303 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 304 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 305 | list_add_tail(&acl->acl_list, &tpg->acl_node_list); |
| 306 | tpg->num_node_acls++; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 307 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 308 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 309 | 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] | 310 | " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 311 | tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth, |
| 312 | tpg->se_tpg_tfo->get_fabric_name(), initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 313 | |
| 314 | return acl; |
| 315 | } |
| 316 | EXPORT_SYMBOL(core_tpg_check_initiator_node_acl); |
| 317 | |
| 318 | void core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *nacl) |
| 319 | { |
| 320 | while (atomic_read(&nacl->acl_pr_ref_count) != 0) |
| 321 | cpu_relax(); |
| 322 | } |
| 323 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 324 | void core_tpg_clear_object_luns(struct se_portal_group *tpg) |
| 325 | { |
Jörn Engel | 2816890 | 2012-03-15 15:06:58 -0400 | [diff] [blame] | 326 | int i; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 327 | struct se_lun *lun; |
| 328 | |
| 329 | spin_lock(&tpg->tpg_lun_lock); |
| 330 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 331 | lun = tpg->tpg_lun_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 332 | |
| 333 | if ((lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) || |
| 334 | (lun->lun_se_dev == NULL)) |
| 335 | continue; |
| 336 | |
| 337 | spin_unlock(&tpg->tpg_lun_lock); |
Jörn Engel | 2816890 | 2012-03-15 15:06:58 -0400 | [diff] [blame] | 338 | core_dev_del_lun(tpg, lun->unpacked_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 339 | spin_lock(&tpg->tpg_lun_lock); |
| 340 | } |
| 341 | spin_unlock(&tpg->tpg_lun_lock); |
| 342 | } |
| 343 | EXPORT_SYMBOL(core_tpg_clear_object_luns); |
| 344 | |
| 345 | /* core_tpg_add_initiator_node_acl(): |
| 346 | * |
| 347 | * |
| 348 | */ |
| 349 | struct se_node_acl *core_tpg_add_initiator_node_acl( |
| 350 | struct se_portal_group *tpg, |
| 351 | struct se_node_acl *se_nacl, |
| 352 | const char *initiatorname, |
| 353 | u32 queue_depth) |
| 354 | { |
| 355 | struct se_node_acl *acl = NULL; |
| 356 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 357 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 358 | acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 359 | if (acl) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 360 | if (acl->dynamic_node_acl) { |
| 361 | acl->dynamic_node_acl = 0; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 362 | pr_debug("%s_TPG[%u] - Replacing dynamic ACL" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 363 | " for %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 364 | tpg->se_tpg_tfo->tpg_get_tag(tpg), initiatorname); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 365 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 366 | /* |
| 367 | * Release the locally allocated struct se_node_acl |
| 368 | * because * core_tpg_add_initiator_node_acl() returned |
| 369 | * a pointer to an existing demo mode node ACL. |
| 370 | */ |
| 371 | if (se_nacl) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 372 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 373 | se_nacl); |
| 374 | goto done; |
| 375 | } |
| 376 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 377 | pr_err("ACL entry for %s Initiator" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 378 | " Node %s already exists for TPG %u, ignoring" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 379 | " request.\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 380 | initiatorname, tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 381 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 382 | return ERR_PTR(-EEXIST); |
| 383 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 384 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 385 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 386 | if (!se_nacl) { |
| 387 | pr_err("struct se_node_acl pointer is NULL\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 388 | return ERR_PTR(-EINVAL); |
| 389 | } |
| 390 | /* |
| 391 | * For v4.x logic the se_node_acl_s is hanging off a fabric |
| 392 | * dependent structure allocated via |
| 393 | * struct target_core_fabric_ops->fabric_make_nodeacl() |
| 394 | */ |
| 395 | acl = se_nacl; |
| 396 | |
| 397 | INIT_LIST_HEAD(&acl->acl_list); |
| 398 | INIT_LIST_HEAD(&acl->acl_sess_list); |
Nicholas Bellinger | afb999f | 2012-03-08 23:45:02 -0800 | [diff] [blame] | 399 | kref_init(&acl->acl_kref); |
Nicholas Bellinger | 0146834 | 2012-03-10 14:32:52 -0800 | [diff] [blame] | 400 | init_completion(&acl->acl_free_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 401 | spin_lock_init(&acl->device_list_lock); |
| 402 | spin_lock_init(&acl->nacl_sess_lock); |
| 403 | atomic_set(&acl->acl_pr_ref_count, 0); |
| 404 | acl->queue_depth = queue_depth; |
| 405 | snprintf(acl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); |
| 406 | acl->se_tpg = tpg; |
| 407 | acl->acl_index = scsi_get_new_index(SCSI_AUTH_INTR_INDEX); |
| 408 | spin_lock_init(&acl->stats_lock); |
| 409 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 410 | tpg->se_tpg_tfo->set_default_node_attributes(acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 411 | |
| 412 | if (core_create_device_list_for_node(acl) < 0) { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 413 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 414 | return ERR_PTR(-ENOMEM); |
| 415 | } |
| 416 | |
| 417 | if (core_set_queue_depth_for_node(tpg, acl) < 0) { |
| 418 | core_free_device_list_for_node(acl, tpg); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 419 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 420 | return ERR_PTR(-EINVAL); |
| 421 | } |
| 422 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 423 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 424 | list_add_tail(&acl->acl_list, &tpg->acl_node_list); |
| 425 | tpg->num_node_acls++; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 426 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 427 | |
| 428 | done: |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 429 | 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] | 430 | " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 431 | tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth, |
| 432 | tpg->se_tpg_tfo->get_fabric_name(), initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 433 | |
| 434 | return acl; |
| 435 | } |
| 436 | EXPORT_SYMBOL(core_tpg_add_initiator_node_acl); |
| 437 | |
| 438 | /* core_tpg_del_initiator_node_acl(): |
| 439 | * |
| 440 | * |
| 441 | */ |
| 442 | int core_tpg_del_initiator_node_acl( |
| 443 | struct se_portal_group *tpg, |
| 444 | struct se_node_acl *acl, |
| 445 | int force) |
| 446 | { |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 447 | LIST_HEAD(sess_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 448 | struct se_session *sess, *sess_tmp; |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 449 | unsigned long flags; |
Jörn Engel | 2816890 | 2012-03-15 15:06:58 -0400 | [diff] [blame] | 450 | int rc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 451 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 452 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 453 | if (acl->dynamic_node_acl) { |
| 454 | acl->dynamic_node_acl = 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 455 | } |
| 456 | list_del(&acl->acl_list); |
| 457 | tpg->num_node_acls--; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 458 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 459 | |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 460 | spin_lock_irqsave(&acl->nacl_sess_lock, flags); |
| 461 | acl->acl_stop = 1; |
| 462 | |
| 463 | list_for_each_entry_safe(sess, sess_tmp, &acl->acl_sess_list, |
| 464 | sess_acl_list) { |
| 465 | if (sess->sess_tearing_down != 0) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 466 | continue; |
| 467 | |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 468 | target_get_session(sess); |
| 469 | list_move(&sess->sess_acl_list, &sess_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 470 | } |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 471 | spin_unlock_irqrestore(&acl->nacl_sess_lock, flags); |
| 472 | |
| 473 | list_for_each_entry_safe(sess, sess_tmp, &sess_list, sess_acl_list) { |
| 474 | list_del(&sess->sess_acl_list); |
| 475 | |
| 476 | rc = tpg->se_tpg_tfo->shutdown_session(sess); |
| 477 | target_put_session(sess); |
| 478 | if (!rc) |
| 479 | continue; |
| 480 | target_put_session(sess); |
| 481 | } |
| 482 | target_put_nacl(acl); |
| 483 | /* |
| 484 | * Wait for last target_put_nacl() to complete in target_complete_nacl() |
| 485 | * for active fabric session transport_deregister_session() callbacks. |
| 486 | */ |
| 487 | wait_for_completion(&acl->acl_free_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 488 | |
| 489 | core_tpg_wait_for_nacl_pr_ref(acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 490 | core_clear_initiator_node_from_tpg(acl, tpg); |
| 491 | core_free_device_list_for_node(acl, tpg); |
| 492 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 493 | 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] | 494 | " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 495 | tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth, |
| 496 | tpg->se_tpg_tfo->get_fabric_name(), acl->initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 497 | |
| 498 | return 0; |
| 499 | } |
| 500 | EXPORT_SYMBOL(core_tpg_del_initiator_node_acl); |
| 501 | |
| 502 | /* core_tpg_set_initiator_node_queue_depth(): |
| 503 | * |
| 504 | * |
| 505 | */ |
| 506 | int core_tpg_set_initiator_node_queue_depth( |
| 507 | struct se_portal_group *tpg, |
| 508 | unsigned char *initiatorname, |
| 509 | u32 queue_depth, |
| 510 | int force) |
| 511 | { |
| 512 | struct se_session *sess, *init_sess = NULL; |
| 513 | struct se_node_acl *acl; |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 514 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 515 | int dynamic_acl = 0; |
| 516 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 517 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 518 | acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 519 | if (!acl) { |
| 520 | pr_err("Access Control List entry for %s Initiator" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 521 | " Node %s does not exists for TPG %hu, ignoring" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 522 | " request.\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 523 | initiatorname, tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 524 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 525 | return -ENODEV; |
| 526 | } |
| 527 | if (acl->dynamic_node_acl) { |
| 528 | acl->dynamic_node_acl = 0; |
| 529 | dynamic_acl = 1; |
| 530 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 531 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 532 | |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 533 | spin_lock_irqsave(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 534 | list_for_each_entry(sess, &tpg->tpg_sess_list, sess_list) { |
| 535 | if (sess->se_node_acl != acl) |
| 536 | continue; |
| 537 | |
| 538 | if (!force) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 539 | pr_err("Unable to change queue depth for %s" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 540 | " Initiator Node: %s while session is" |
| 541 | " operational. To forcefully change the queue" |
| 542 | " depth and force session reinstatement" |
| 543 | " use the \"force=1\" parameter.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 544 | tpg->se_tpg_tfo->get_fabric_name(), initiatorname); |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 545 | spin_unlock_irqrestore(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 546 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 547 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 548 | if (dynamic_acl) |
| 549 | acl->dynamic_node_acl = 1; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 550 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 551 | return -EEXIST; |
| 552 | } |
| 553 | /* |
| 554 | * Determine if the session needs to be closed by our context. |
| 555 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 556 | if (!tpg->se_tpg_tfo->shutdown_session(sess)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 557 | continue; |
| 558 | |
| 559 | init_sess = sess; |
| 560 | break; |
| 561 | } |
| 562 | |
| 563 | /* |
| 564 | * User has requested to change the queue depth for a Initiator Node. |
| 565 | * Change the value in the Node's struct se_node_acl, and call |
| 566 | * core_set_queue_depth_for_node() to add the requested queue depth. |
| 567 | * |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 568 | * Finally call tpg->se_tpg_tfo->close_session() to force session |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 569 | * reinstatement to occur if there is an active session for the |
| 570 | * $FABRIC_MOD Initiator Node in question. |
| 571 | */ |
| 572 | acl->queue_depth = queue_depth; |
| 573 | |
| 574 | if (core_set_queue_depth_for_node(tpg, acl) < 0) { |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 575 | spin_unlock_irqrestore(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 576 | /* |
| 577 | * Force session reinstatement if |
| 578 | * core_set_queue_depth_for_node() failed, because we assume |
| 579 | * the $FABRIC_MOD has already the set session reinstatement |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 580 | * bit from tpg->se_tpg_tfo->shutdown_session() called above. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 581 | */ |
| 582 | if (init_sess) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 583 | tpg->se_tpg_tfo->close_session(init_sess); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 584 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 585 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 586 | if (dynamic_acl) |
| 587 | acl->dynamic_node_acl = 1; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 588 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 589 | return -EINVAL; |
| 590 | } |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 591 | spin_unlock_irqrestore(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 592 | /* |
| 593 | * If the $FABRIC_MOD session for the Initiator Node ACL exists, |
| 594 | * forcefully shutdown the $FABRIC_MOD session/nexus. |
| 595 | */ |
| 596 | if (init_sess) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 597 | tpg->se_tpg_tfo->close_session(init_sess); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 598 | |
Joe Perches | bfb9035 | 2011-08-17 06:58:04 -0700 | [diff] [blame] | 599 | pr_debug("Successfully changed queue depth to: %d for Initiator" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 600 | " Node: %s on %s Target Portal Group: %u\n", queue_depth, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 601 | initiatorname, tpg->se_tpg_tfo->get_fabric_name(), |
| 602 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 603 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 604 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 605 | if (dynamic_acl) |
| 606 | acl->dynamic_node_acl = 1; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 607 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 608 | |
| 609 | return 0; |
| 610 | } |
| 611 | EXPORT_SYMBOL(core_tpg_set_initiator_node_queue_depth); |
| 612 | |
Andy Grover | 79e62fc | 2012-12-11 16:30:53 -0800 | [diff] [blame] | 613 | /* core_tpg_set_initiator_node_tag(): |
| 614 | * |
| 615 | * Initiator nodeacl tags are not used internally, but may be used by |
| 616 | * userspace to emulate aliases or groups. |
| 617 | * Returns length of newly-set tag or -EINVAL. |
| 618 | */ |
| 619 | int core_tpg_set_initiator_node_tag( |
| 620 | struct se_portal_group *tpg, |
| 621 | struct se_node_acl *acl, |
| 622 | const char *new_tag) |
| 623 | { |
| 624 | if (strlen(new_tag) >= MAX_ACL_TAG_SIZE) |
| 625 | return -EINVAL; |
| 626 | |
| 627 | if (!strncmp("NULL", new_tag, 4)) { |
| 628 | acl->acl_tag[0] = '\0'; |
| 629 | return 0; |
| 630 | } |
| 631 | |
| 632 | return snprintf(acl->acl_tag, MAX_ACL_TAG_SIZE, "%s", new_tag); |
| 633 | } |
| 634 | EXPORT_SYMBOL(core_tpg_set_initiator_node_tag); |
| 635 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 636 | static int core_tpg_setup_virtual_lun0(struct se_portal_group *se_tpg) |
| 637 | { |
| 638 | /* Set in core_dev_setup_virtual_lun0() */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 639 | struct se_device *dev = g_lun0_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 640 | struct se_lun *lun = &se_tpg->tpg_virt_lun0; |
| 641 | u32 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 642 | int ret; |
| 643 | |
| 644 | lun->unpacked_lun = 0; |
| 645 | lun->lun_status = TRANSPORT_LUN_STATUS_FREE; |
| 646 | atomic_set(&lun->lun_acl_count, 0); |
| 647 | init_completion(&lun->lun_shutdown_comp); |
| 648 | INIT_LIST_HEAD(&lun->lun_acl_list); |
| 649 | INIT_LIST_HEAD(&lun->lun_cmd_list); |
| 650 | spin_lock_init(&lun->lun_acl_lock); |
| 651 | spin_lock_init(&lun->lun_cmd_lock); |
| 652 | spin_lock_init(&lun->lun_sep_lock); |
| 653 | |
| 654 | ret = core_tpg_post_addlun(se_tpg, lun, lun_access, dev); |
| 655 | if (ret < 0) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 656 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 657 | |
| 658 | return 0; |
| 659 | } |
| 660 | |
| 661 | static void core_tpg_release_virtual_lun0(struct se_portal_group *se_tpg) |
| 662 | { |
| 663 | struct se_lun *lun = &se_tpg->tpg_virt_lun0; |
| 664 | |
| 665 | core_tpg_post_dellun(se_tpg, lun); |
| 666 | } |
| 667 | |
| 668 | int core_tpg_register( |
| 669 | struct target_core_fabric_ops *tfo, |
| 670 | struct se_wwn *se_wwn, |
| 671 | struct se_portal_group *se_tpg, |
| 672 | void *tpg_fabric_ptr, |
| 673 | int se_tpg_type) |
| 674 | { |
| 675 | struct se_lun *lun; |
| 676 | u32 i; |
| 677 | |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 678 | se_tpg->tpg_lun_list = array_zalloc(TRANSPORT_MAX_LUNS_PER_TPG, |
| 679 | sizeof(struct se_lun), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 680 | if (!se_tpg->tpg_lun_list) { |
| 681 | pr_err("Unable to allocate struct se_portal_group->" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 682 | "tpg_lun_list\n"); |
| 683 | return -ENOMEM; |
| 684 | } |
| 685 | |
| 686 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 687 | lun = se_tpg->tpg_lun_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 688 | lun->unpacked_lun = i; |
Nicholas Bellinger | 0ff8754 | 2012-12-04 23:43:57 -0800 | [diff] [blame] | 689 | lun->lun_link_magic = SE_LUN_LINK_MAGIC; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 690 | lun->lun_status = TRANSPORT_LUN_STATUS_FREE; |
| 691 | atomic_set(&lun->lun_acl_count, 0); |
| 692 | init_completion(&lun->lun_shutdown_comp); |
| 693 | INIT_LIST_HEAD(&lun->lun_acl_list); |
| 694 | INIT_LIST_HEAD(&lun->lun_cmd_list); |
| 695 | spin_lock_init(&lun->lun_acl_lock); |
| 696 | spin_lock_init(&lun->lun_cmd_lock); |
| 697 | spin_lock_init(&lun->lun_sep_lock); |
| 698 | } |
| 699 | |
| 700 | se_tpg->se_tpg_type = se_tpg_type; |
| 701 | se_tpg->se_tpg_fabric_ptr = tpg_fabric_ptr; |
| 702 | se_tpg->se_tpg_tfo = tfo; |
| 703 | se_tpg->se_tpg_wwn = se_wwn; |
| 704 | atomic_set(&se_tpg->tpg_pr_ref_count, 0); |
| 705 | INIT_LIST_HEAD(&se_tpg->acl_node_list); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 706 | INIT_LIST_HEAD(&se_tpg->se_tpg_node); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 707 | INIT_LIST_HEAD(&se_tpg->tpg_sess_list); |
| 708 | spin_lock_init(&se_tpg->acl_node_lock); |
| 709 | spin_lock_init(&se_tpg->session_lock); |
| 710 | spin_lock_init(&se_tpg->tpg_lun_lock); |
| 711 | |
| 712 | if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) { |
| 713 | if (core_tpg_setup_virtual_lun0(se_tpg) < 0) { |
Wei Yongjun | 0fb889b | 2013-03-15 17:19:26 +0800 | [diff] [blame] | 714 | array_free(se_tpg->tpg_lun_list, |
| 715 | TRANSPORT_MAX_LUNS_PER_TPG); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 716 | return -ENOMEM; |
| 717 | } |
| 718 | } |
| 719 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 720 | spin_lock_bh(&tpg_lock); |
| 721 | list_add_tail(&se_tpg->se_tpg_node, &tpg_list); |
| 722 | spin_unlock_bh(&tpg_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 723 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 724 | pr_debug("TARGET_CORE[%s]: Allocated %s struct se_portal_group for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 725 | " endpoint: %s, Portal Tag: %u\n", tfo->get_fabric_name(), |
| 726 | (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) ? |
| 727 | "Normal" : "Discovery", (tfo->tpg_get_wwn(se_tpg) == NULL) ? |
| 728 | "None" : tfo->tpg_get_wwn(se_tpg), tfo->tpg_get_tag(se_tpg)); |
| 729 | |
| 730 | return 0; |
| 731 | } |
| 732 | EXPORT_SYMBOL(core_tpg_register); |
| 733 | |
| 734 | int core_tpg_deregister(struct se_portal_group *se_tpg) |
| 735 | { |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 736 | struct se_node_acl *nacl, *nacl_tmp; |
| 737 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 738 | pr_debug("TARGET_CORE[%s]: Deallocating %s struct se_portal_group" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 739 | " for endpoint: %s Portal Tag %u\n", |
| 740 | (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) ? |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 741 | "Normal" : "Discovery", se_tpg->se_tpg_tfo->get_fabric_name(), |
| 742 | se_tpg->se_tpg_tfo->tpg_get_wwn(se_tpg), |
| 743 | se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 744 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 745 | spin_lock_bh(&tpg_lock); |
| 746 | list_del(&se_tpg->se_tpg_node); |
| 747 | spin_unlock_bh(&tpg_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 748 | |
| 749 | while (atomic_read(&se_tpg->tpg_pr_ref_count) != 0) |
| 750 | cpu_relax(); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 751 | /* |
| 752 | * Release any remaining demo-mode generated se_node_acl that have |
| 753 | * not been released because of TFO->tpg_check_demo_mode_cache() == 1 |
| 754 | * in transport_deregister_session(). |
| 755 | */ |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 756 | spin_lock_irq(&se_tpg->acl_node_lock); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 757 | list_for_each_entry_safe(nacl, nacl_tmp, &se_tpg->acl_node_list, |
| 758 | acl_list) { |
| 759 | list_del(&nacl->acl_list); |
| 760 | se_tpg->num_node_acls--; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 761 | spin_unlock_irq(&se_tpg->acl_node_lock); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 762 | |
| 763 | core_tpg_wait_for_nacl_pr_ref(nacl); |
| 764 | core_free_device_list_for_node(nacl, se_tpg); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 765 | se_tpg->se_tpg_tfo->tpg_release_fabric_acl(se_tpg, nacl); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 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 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 769 | spin_unlock_irq(&se_tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 770 | |
| 771 | if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) |
| 772 | core_tpg_release_virtual_lun0(se_tpg); |
| 773 | |
| 774 | se_tpg->se_tpg_fabric_ptr = NULL; |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 775 | array_free(se_tpg->tpg_lun_list, TRANSPORT_MAX_LUNS_PER_TPG); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 776 | return 0; |
| 777 | } |
| 778 | EXPORT_SYMBOL(core_tpg_deregister); |
| 779 | |
| 780 | struct se_lun *core_tpg_pre_addlun( |
| 781 | struct se_portal_group *tpg, |
| 782 | u32 unpacked_lun) |
| 783 | { |
| 784 | struct se_lun *lun; |
| 785 | |
| 786 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 787 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER_TPG" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 788 | "-1: %u for Target Portal Group: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 789 | tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 790 | unpacked_lun, TRANSPORT_MAX_LUNS_PER_TPG-1, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 791 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 792 | return ERR_PTR(-EOVERFLOW); |
| 793 | } |
| 794 | |
| 795 | spin_lock(&tpg->tpg_lun_lock); |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 796 | lun = tpg->tpg_lun_list[unpacked_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 797 | if (lun->lun_status == TRANSPORT_LUN_STATUS_ACTIVE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 798 | pr_err("TPG Logical Unit Number: %u is already active" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 799 | " on %s Target Portal Group: %u, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 800 | unpacked_lun, tpg->se_tpg_tfo->get_fabric_name(), |
| 801 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 802 | spin_unlock(&tpg->tpg_lun_lock); |
| 803 | return ERR_PTR(-EINVAL); |
| 804 | } |
| 805 | spin_unlock(&tpg->tpg_lun_lock); |
| 806 | |
| 807 | return lun; |
| 808 | } |
| 809 | |
| 810 | int core_tpg_post_addlun( |
| 811 | struct se_portal_group *tpg, |
| 812 | struct se_lun *lun, |
| 813 | u32 lun_access, |
| 814 | void *lun_ptr) |
| 815 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 816 | int ret; |
| 817 | |
| 818 | ret = core_dev_export(lun_ptr, tpg, lun); |
| 819 | if (ret < 0) |
| 820 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 821 | |
| 822 | spin_lock(&tpg->tpg_lun_lock); |
| 823 | lun->lun_access = lun_access; |
| 824 | lun->lun_status = TRANSPORT_LUN_STATUS_ACTIVE; |
| 825 | spin_unlock(&tpg->tpg_lun_lock); |
| 826 | |
| 827 | return 0; |
| 828 | } |
| 829 | |
| 830 | static void core_tpg_shutdown_lun( |
| 831 | struct se_portal_group *tpg, |
| 832 | struct se_lun *lun) |
| 833 | { |
| 834 | core_clear_lun_from_tpg(lun, tpg); |
| 835 | transport_clear_lun_from_sessions(lun); |
| 836 | } |
| 837 | |
| 838 | struct se_lun *core_tpg_pre_dellun( |
| 839 | struct se_portal_group *tpg, |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 840 | u32 unpacked_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 841 | { |
| 842 | struct se_lun *lun; |
| 843 | |
| 844 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 845 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER_TPG" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 846 | "-1: %u for Target Portal Group: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 847 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 848 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 849 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 850 | return ERR_PTR(-EOVERFLOW); |
| 851 | } |
| 852 | |
| 853 | spin_lock(&tpg->tpg_lun_lock); |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 854 | lun = tpg->tpg_lun_list[unpacked_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 855 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 856 | pr_err("%s Logical Unit Number: %u is not active on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 857 | " Target Portal Group: %u, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 858 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
| 859 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 860 | spin_unlock(&tpg->tpg_lun_lock); |
| 861 | return ERR_PTR(-ENODEV); |
| 862 | } |
| 863 | spin_unlock(&tpg->tpg_lun_lock); |
| 864 | |
| 865 | return lun; |
| 866 | } |
| 867 | |
| 868 | int core_tpg_post_dellun( |
| 869 | struct se_portal_group *tpg, |
| 870 | struct se_lun *lun) |
| 871 | { |
| 872 | core_tpg_shutdown_lun(tpg, lun); |
| 873 | |
| 874 | core_dev_unexport(lun->lun_se_dev, tpg, lun); |
| 875 | |
| 876 | spin_lock(&tpg->tpg_lun_lock); |
| 877 | lun->lun_status = TRANSPORT_LUN_STATUS_FREE; |
| 878 | spin_unlock(&tpg->tpg_lun_lock); |
| 879 | |
| 880 | return 0; |
| 881 | } |