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" |
Nicholas Bellinger | e248056 | 2014-10-04 04:23:15 +0000 | [diff] [blame] | 43 | #include "target_core_pr.h" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 44 | |
| 45 | extern struct se_device *g_lun0_dev; |
| 46 | |
| 47 | static DEFINE_SPINLOCK(tpg_lock); |
| 48 | static LIST_HEAD(tpg_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 49 | |
| 50 | /* core_clear_initiator_node_from_tpg(): |
| 51 | * |
| 52 | * |
| 53 | */ |
| 54 | static void core_clear_initiator_node_from_tpg( |
| 55 | struct se_node_acl *nacl, |
| 56 | struct se_portal_group *tpg) |
| 57 | { |
| 58 | int i; |
| 59 | struct se_dev_entry *deve; |
| 60 | struct se_lun *lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 61 | |
| 62 | spin_lock_irq(&nacl->device_list_lock); |
| 63 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 64 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 65 | |
| 66 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
| 67 | continue; |
| 68 | |
| 69 | if (!deve->se_lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 70 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 71 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 72 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 73 | continue; |
| 74 | } |
| 75 | |
| 76 | lun = deve->se_lun; |
| 77 | spin_unlock_irq(&nacl->device_list_lock); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 78 | core_disable_device_list_for_node(lun, NULL, deve->mapped_lun, |
| 79 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 80 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 81 | spin_lock_irq(&nacl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 82 | } |
| 83 | spin_unlock_irq(&nacl->device_list_lock); |
| 84 | } |
| 85 | |
| 86 | /* __core_tpg_get_initiator_node_acl(): |
| 87 | * |
| 88 | * spin_lock_bh(&tpg->acl_node_lock); must be held when calling |
| 89 | */ |
| 90 | struct se_node_acl *__core_tpg_get_initiator_node_acl( |
| 91 | struct se_portal_group *tpg, |
| 92 | const char *initiatorname) |
| 93 | { |
| 94 | struct se_node_acl *acl; |
| 95 | |
| 96 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 97 | if (!strcmp(acl->initiatorname, initiatorname)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 98 | return acl; |
| 99 | } |
| 100 | |
| 101 | return NULL; |
| 102 | } |
| 103 | |
| 104 | /* core_tpg_get_initiator_node_acl(): |
| 105 | * |
| 106 | * |
| 107 | */ |
| 108 | struct se_node_acl *core_tpg_get_initiator_node_acl( |
| 109 | struct se_portal_group *tpg, |
| 110 | unsigned char *initiatorname) |
| 111 | { |
| 112 | struct se_node_acl *acl; |
| 113 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 114 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | fcf2948 | 2013-02-18 18:00:33 -0800 | [diff] [blame] | 115 | acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 116 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 117 | |
Nicholas Bellinger | fcf2948 | 2013-02-18 18:00:33 -0800 | [diff] [blame] | 118 | return acl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 119 | } |
Thomas Glanzmann | b3fde03 | 2013-10-07 23:13:02 +0200 | [diff] [blame] | 120 | EXPORT_SYMBOL(core_tpg_get_initiator_node_acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 121 | |
| 122 | /* core_tpg_add_node_to_devs(): |
| 123 | * |
| 124 | * |
| 125 | */ |
| 126 | void core_tpg_add_node_to_devs( |
| 127 | struct se_node_acl *acl, |
| 128 | struct se_portal_group *tpg) |
| 129 | { |
| 130 | int i = 0; |
| 131 | u32 lun_access = 0; |
| 132 | struct se_lun *lun; |
| 133 | struct se_device *dev; |
| 134 | |
| 135 | spin_lock(&tpg->tpg_lun_lock); |
| 136 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 137 | lun = tpg->tpg_lun_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 138 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) |
| 139 | continue; |
| 140 | |
| 141 | spin_unlock(&tpg->tpg_lun_lock); |
| 142 | |
| 143 | dev = lun->lun_se_dev; |
| 144 | /* |
| 145 | * By default in LIO-Target $FABRIC_MOD, |
| 146 | * demo_mode_write_protect is ON, or READ_ONLY; |
| 147 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 148 | if (!tpg->se_tpg_tfo->tpg_check_demo_mode_write_protect(tpg)) { |
Nicholas Bellinger | 58d9261 | 2012-03-20 21:26:48 -0700 | [diff] [blame] | 149 | lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 150 | } else { |
| 151 | /* |
| 152 | * Allow only optical drives to issue R/W in default RO |
| 153 | * demo mode. |
| 154 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 155 | if (dev->transport->get_device_type(dev) == TYPE_DISK) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 156 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 157 | else |
| 158 | lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; |
| 159 | } |
| 160 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 161 | pr_debug("TARGET_CORE[%s]->TPG[%u]_LUN[%u] - Adding %s" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 162 | " access for LUN in Demo Mode\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 163 | tpg->se_tpg_tfo->get_fabric_name(), |
| 164 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 165 | (lun_access == TRANSPORT_LUNFLAGS_READ_WRITE) ? |
| 166 | "READ-WRITE" : "READ-ONLY"); |
| 167 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 168 | core_enable_device_list_for_node(lun, NULL, lun->unpacked_lun, |
| 169 | lun_access, acl, tpg); |
Nicholas Bellinger | e248056 | 2014-10-04 04:23:15 +0000 | [diff] [blame] | 170 | /* |
| 171 | * Check to see if there are any existing persistent reservation |
| 172 | * APTPL pre-registrations that need to be enabled for this dynamic |
| 173 | * LUN ACL now.. |
| 174 | */ |
| 175 | core_scsi3_check_aptpl_registration(dev, tpg, lun, acl, |
| 176 | lun->unpacked_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 177 | spin_lock(&tpg->tpg_lun_lock); |
| 178 | } |
| 179 | spin_unlock(&tpg->tpg_lun_lock); |
| 180 | } |
| 181 | |
| 182 | /* core_set_queue_depth_for_node(): |
| 183 | * |
| 184 | * |
| 185 | */ |
| 186 | static int core_set_queue_depth_for_node( |
| 187 | struct se_portal_group *tpg, |
| 188 | struct se_node_acl *acl) |
| 189 | { |
| 190 | if (!acl->queue_depth) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 191 | pr_err("Queue depth for %s Initiator Node: %s is 0," |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 192 | "defaulting to 1.\n", tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 193 | acl->initiatorname); |
| 194 | acl->queue_depth = 1; |
| 195 | } |
| 196 | |
| 197 | return 0; |
| 198 | } |
| 199 | |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 200 | void array_free(void *array, int n) |
| 201 | { |
| 202 | void **a = array; |
| 203 | int i; |
| 204 | |
| 205 | for (i = 0; i < n; i++) |
| 206 | kfree(a[i]); |
| 207 | kfree(a); |
| 208 | } |
| 209 | |
| 210 | static void *array_zalloc(int n, size_t size, gfp_t flags) |
| 211 | { |
| 212 | void **a; |
| 213 | int i; |
| 214 | |
| 215 | a = kzalloc(n * sizeof(void*), flags); |
| 216 | if (!a) |
| 217 | return NULL; |
| 218 | for (i = 0; i < n; i++) { |
| 219 | a[i] = kzalloc(size, flags); |
| 220 | if (!a[i]) { |
| 221 | array_free(a, n); |
| 222 | return NULL; |
| 223 | } |
| 224 | } |
| 225 | return a; |
| 226 | } |
| 227 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 228 | /* core_create_device_list_for_node(): |
| 229 | * |
| 230 | * |
| 231 | */ |
| 232 | static int core_create_device_list_for_node(struct se_node_acl *nacl) |
| 233 | { |
| 234 | struct se_dev_entry *deve; |
| 235 | int i; |
| 236 | |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 237 | nacl->device_list = array_zalloc(TRANSPORT_MAX_LUNS_PER_TPG, |
| 238 | sizeof(struct se_dev_entry), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 239 | if (!nacl->device_list) { |
| 240 | pr_err("Unable to allocate memory for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 241 | " struct se_node_acl->device_list\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 242 | return -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 243 | } |
| 244 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 245 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 246 | |
| 247 | atomic_set(&deve->ua_count, 0); |
| 248 | atomic_set(&deve->pr_ref_count, 0); |
| 249 | spin_lock_init(&deve->ua_lock); |
| 250 | INIT_LIST_HEAD(&deve->alua_port_list); |
| 251 | INIT_LIST_HEAD(&deve->ua_list); |
| 252 | } |
| 253 | |
| 254 | return 0; |
| 255 | } |
| 256 | |
| 257 | /* core_tpg_check_initiator_node_acl() |
| 258 | * |
| 259 | * |
| 260 | */ |
| 261 | struct se_node_acl *core_tpg_check_initiator_node_acl( |
| 262 | struct se_portal_group *tpg, |
| 263 | unsigned char *initiatorname) |
| 264 | { |
| 265 | struct se_node_acl *acl; |
| 266 | |
| 267 | acl = core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 268 | if (acl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 269 | return acl; |
| 270 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 271 | if (!tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 272 | return NULL; |
| 273 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 274 | acl = tpg->se_tpg_tfo->tpg_alloc_fabric_acl(tpg); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 275 | if (!acl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 276 | return NULL; |
| 277 | |
| 278 | INIT_LIST_HEAD(&acl->acl_list); |
| 279 | INIT_LIST_HEAD(&acl->acl_sess_list); |
Nicholas Bellinger | afb999f | 2012-03-08 23:45:02 -0800 | [diff] [blame] | 280 | kref_init(&acl->acl_kref); |
Nicholas Bellinger | 0146834 | 2012-03-10 14:32:52 -0800 | [diff] [blame] | 281 | init_completion(&acl->acl_free_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 282 | spin_lock_init(&acl->device_list_lock); |
| 283 | spin_lock_init(&acl->nacl_sess_lock); |
| 284 | atomic_set(&acl->acl_pr_ref_count, 0); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 285 | acl->queue_depth = tpg->se_tpg_tfo->tpg_get_default_depth(tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 286 | snprintf(acl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); |
| 287 | acl->se_tpg = tpg; |
| 288 | acl->acl_index = scsi_get_new_index(SCSI_AUTH_INTR_INDEX); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 289 | acl->dynamic_node_acl = 1; |
| 290 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 291 | tpg->se_tpg_tfo->set_default_node_attributes(acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 292 | |
| 293 | if (core_create_device_list_for_node(acl) < 0) { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 294 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 295 | return NULL; |
| 296 | } |
| 297 | |
| 298 | if (core_set_queue_depth_for_node(tpg, acl) < 0) { |
| 299 | core_free_device_list_for_node(acl, tpg); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 300 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 301 | return NULL; |
| 302 | } |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 303 | /* |
| 304 | * Here we only create demo-mode MappedLUNs from the active |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 305 | * TPG LUNs if the fabric is not explicitly asking for |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 306 | * tpg_check_demo_mode_login_only() == 1. |
| 307 | */ |
Andy Grover | cdf88a2 | 2012-07-12 17:34:57 -0700 | [diff] [blame] | 308 | if ((tpg->se_tpg_tfo->tpg_check_demo_mode_login_only == NULL) || |
| 309 | (tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg) != 1)) |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 310 | core_tpg_add_node_to_devs(acl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 311 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 312 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 313 | list_add_tail(&acl->acl_list, &tpg->acl_node_list); |
| 314 | tpg->num_node_acls++; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 315 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 316 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 317 | 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] | 318 | " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 319 | tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth, |
| 320 | tpg->se_tpg_tfo->get_fabric_name(), initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 321 | |
| 322 | return acl; |
| 323 | } |
| 324 | EXPORT_SYMBOL(core_tpg_check_initiator_node_acl); |
| 325 | |
| 326 | void core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *nacl) |
| 327 | { |
| 328 | while (atomic_read(&nacl->acl_pr_ref_count) != 0) |
| 329 | cpu_relax(); |
| 330 | } |
| 331 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 332 | void core_tpg_clear_object_luns(struct se_portal_group *tpg) |
| 333 | { |
Jörn Engel | 2816890 | 2012-03-15 15:06:58 -0400 | [diff] [blame] | 334 | int i; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 335 | struct se_lun *lun; |
| 336 | |
| 337 | spin_lock(&tpg->tpg_lun_lock); |
| 338 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 339 | lun = tpg->tpg_lun_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 340 | |
| 341 | if ((lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) || |
| 342 | (lun->lun_se_dev == NULL)) |
| 343 | continue; |
| 344 | |
| 345 | spin_unlock(&tpg->tpg_lun_lock); |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 346 | core_dev_del_lun(tpg, lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 347 | spin_lock(&tpg->tpg_lun_lock); |
| 348 | } |
| 349 | spin_unlock(&tpg->tpg_lun_lock); |
| 350 | } |
| 351 | EXPORT_SYMBOL(core_tpg_clear_object_luns); |
| 352 | |
| 353 | /* core_tpg_add_initiator_node_acl(): |
| 354 | * |
| 355 | * |
| 356 | */ |
| 357 | struct se_node_acl *core_tpg_add_initiator_node_acl( |
| 358 | struct se_portal_group *tpg, |
| 359 | struct se_node_acl *se_nacl, |
| 360 | const char *initiatorname, |
| 361 | u32 queue_depth) |
| 362 | { |
| 363 | struct se_node_acl *acl = NULL; |
| 364 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 365 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 366 | acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 367 | if (acl) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 368 | if (acl->dynamic_node_acl) { |
| 369 | acl->dynamic_node_acl = 0; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 370 | pr_debug("%s_TPG[%u] - Replacing dynamic ACL" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 371 | " for %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 372 | tpg->se_tpg_tfo->tpg_get_tag(tpg), initiatorname); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 373 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 374 | /* |
| 375 | * Release the locally allocated struct se_node_acl |
| 376 | * because * core_tpg_add_initiator_node_acl() returned |
| 377 | * a pointer to an existing demo mode node ACL. |
| 378 | */ |
| 379 | if (se_nacl) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 380 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 381 | se_nacl); |
| 382 | goto done; |
| 383 | } |
| 384 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 385 | pr_err("ACL entry for %s Initiator" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 386 | " Node %s already exists for TPG %u, ignoring" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 387 | " request.\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 388 | initiatorname, tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 389 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 390 | return ERR_PTR(-EEXIST); |
| 391 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 392 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 393 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 394 | if (!se_nacl) { |
| 395 | pr_err("struct se_node_acl pointer is NULL\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 396 | return ERR_PTR(-EINVAL); |
| 397 | } |
| 398 | /* |
| 399 | * For v4.x logic the se_node_acl_s is hanging off a fabric |
| 400 | * dependent structure allocated via |
| 401 | * struct target_core_fabric_ops->fabric_make_nodeacl() |
| 402 | */ |
| 403 | acl = se_nacl; |
| 404 | |
| 405 | INIT_LIST_HEAD(&acl->acl_list); |
| 406 | INIT_LIST_HEAD(&acl->acl_sess_list); |
Nicholas Bellinger | afb999f | 2012-03-08 23:45:02 -0800 | [diff] [blame] | 407 | kref_init(&acl->acl_kref); |
Nicholas Bellinger | 0146834 | 2012-03-10 14:32:52 -0800 | [diff] [blame] | 408 | init_completion(&acl->acl_free_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 409 | spin_lock_init(&acl->device_list_lock); |
| 410 | spin_lock_init(&acl->nacl_sess_lock); |
| 411 | atomic_set(&acl->acl_pr_ref_count, 0); |
| 412 | acl->queue_depth = queue_depth; |
| 413 | snprintf(acl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); |
| 414 | acl->se_tpg = tpg; |
| 415 | acl->acl_index = scsi_get_new_index(SCSI_AUTH_INTR_INDEX); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 416 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 417 | tpg->se_tpg_tfo->set_default_node_attributes(acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 418 | |
| 419 | if (core_create_device_list_for_node(acl) < 0) { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 420 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 421 | return ERR_PTR(-ENOMEM); |
| 422 | } |
| 423 | |
| 424 | if (core_set_queue_depth_for_node(tpg, acl) < 0) { |
| 425 | core_free_device_list_for_node(acl, tpg); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 426 | tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 427 | return ERR_PTR(-EINVAL); |
| 428 | } |
| 429 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 430 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 431 | list_add_tail(&acl->acl_list, &tpg->acl_node_list); |
| 432 | tpg->num_node_acls++; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 433 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 434 | |
| 435 | done: |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 436 | 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] | 437 | " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 438 | tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth, |
| 439 | tpg->se_tpg_tfo->get_fabric_name(), initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 440 | |
| 441 | return acl; |
| 442 | } |
| 443 | EXPORT_SYMBOL(core_tpg_add_initiator_node_acl); |
| 444 | |
| 445 | /* core_tpg_del_initiator_node_acl(): |
| 446 | * |
| 447 | * |
| 448 | */ |
| 449 | int core_tpg_del_initiator_node_acl( |
| 450 | struct se_portal_group *tpg, |
| 451 | struct se_node_acl *acl, |
| 452 | int force) |
| 453 | { |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 454 | LIST_HEAD(sess_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 455 | struct se_session *sess, *sess_tmp; |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 456 | unsigned long flags; |
Jörn Engel | 2816890 | 2012-03-15 15:06:58 -0400 | [diff] [blame] | 457 | int rc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 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 | if (acl->dynamic_node_acl) { |
| 461 | acl->dynamic_node_acl = 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 462 | } |
| 463 | list_del(&acl->acl_list); |
| 464 | tpg->num_node_acls--; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 465 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 466 | |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 467 | spin_lock_irqsave(&acl->nacl_sess_lock, flags); |
| 468 | acl->acl_stop = 1; |
| 469 | |
| 470 | list_for_each_entry_safe(sess, sess_tmp, &acl->acl_sess_list, |
| 471 | sess_acl_list) { |
| 472 | if (sess->sess_tearing_down != 0) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 473 | continue; |
| 474 | |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 475 | target_get_session(sess); |
| 476 | list_move(&sess->sess_acl_list, &sess_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 477 | } |
Nicholas Bellinger | 337c060 | 2012-03-10 14:36:21 -0800 | [diff] [blame] | 478 | spin_unlock_irqrestore(&acl->nacl_sess_lock, flags); |
| 479 | |
| 480 | list_for_each_entry_safe(sess, sess_tmp, &sess_list, sess_acl_list) { |
| 481 | list_del(&sess->sess_acl_list); |
| 482 | |
| 483 | rc = tpg->se_tpg_tfo->shutdown_session(sess); |
| 484 | target_put_session(sess); |
| 485 | if (!rc) |
| 486 | continue; |
| 487 | target_put_session(sess); |
| 488 | } |
| 489 | target_put_nacl(acl); |
| 490 | /* |
| 491 | * Wait for last target_put_nacl() to complete in target_complete_nacl() |
| 492 | * for active fabric session transport_deregister_session() callbacks. |
| 493 | */ |
| 494 | wait_for_completion(&acl->acl_free_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 495 | |
| 496 | core_tpg_wait_for_nacl_pr_ref(acl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 497 | core_clear_initiator_node_from_tpg(acl, tpg); |
| 498 | core_free_device_list_for_node(acl, tpg); |
| 499 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 500 | 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] | 501 | " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 502 | tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth, |
| 503 | tpg->se_tpg_tfo->get_fabric_name(), acl->initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 504 | |
| 505 | return 0; |
| 506 | } |
| 507 | EXPORT_SYMBOL(core_tpg_del_initiator_node_acl); |
| 508 | |
| 509 | /* core_tpg_set_initiator_node_queue_depth(): |
| 510 | * |
| 511 | * |
| 512 | */ |
| 513 | int core_tpg_set_initiator_node_queue_depth( |
| 514 | struct se_portal_group *tpg, |
| 515 | unsigned char *initiatorname, |
| 516 | u32 queue_depth, |
| 517 | int force) |
| 518 | { |
| 519 | struct se_session *sess, *init_sess = NULL; |
| 520 | struct se_node_acl *acl; |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 521 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 522 | int dynamic_acl = 0; |
| 523 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 524 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 525 | acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 526 | if (!acl) { |
| 527 | pr_err("Access Control List entry for %s Initiator" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 528 | " Node %s does not exists for TPG %hu, ignoring" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 529 | " request.\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 530 | initiatorname, tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
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 | return -ENODEV; |
| 533 | } |
| 534 | if (acl->dynamic_node_acl) { |
| 535 | acl->dynamic_node_acl = 0; |
| 536 | dynamic_acl = 1; |
| 537 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 538 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 539 | |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 540 | spin_lock_irqsave(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 541 | list_for_each_entry(sess, &tpg->tpg_sess_list, sess_list) { |
| 542 | if (sess->se_node_acl != acl) |
| 543 | continue; |
| 544 | |
| 545 | if (!force) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 546 | pr_err("Unable to change queue depth for %s" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 547 | " Initiator Node: %s while session is" |
| 548 | " operational. To forcefully change the queue" |
| 549 | " depth and force session reinstatement" |
| 550 | " use the \"force=1\" parameter.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 551 | tpg->se_tpg_tfo->get_fabric_name(), initiatorname); |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 552 | spin_unlock_irqrestore(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 553 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 554 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 555 | if (dynamic_acl) |
| 556 | acl->dynamic_node_acl = 1; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 557 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 558 | return -EEXIST; |
| 559 | } |
| 560 | /* |
| 561 | * Determine if the session needs to be closed by our context. |
| 562 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 563 | if (!tpg->se_tpg_tfo->shutdown_session(sess)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 564 | continue; |
| 565 | |
| 566 | init_sess = sess; |
| 567 | break; |
| 568 | } |
| 569 | |
| 570 | /* |
| 571 | * User has requested to change the queue depth for a Initiator Node. |
| 572 | * Change the value in the Node's struct se_node_acl, and call |
| 573 | * core_set_queue_depth_for_node() to add the requested queue depth. |
| 574 | * |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 575 | * Finally call tpg->se_tpg_tfo->close_session() to force session |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 576 | * reinstatement to occur if there is an active session for the |
| 577 | * $FABRIC_MOD Initiator Node in question. |
| 578 | */ |
| 579 | acl->queue_depth = queue_depth; |
| 580 | |
| 581 | if (core_set_queue_depth_for_node(tpg, acl) < 0) { |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 582 | spin_unlock_irqrestore(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 583 | /* |
| 584 | * Force session reinstatement if |
| 585 | * core_set_queue_depth_for_node() failed, because we assume |
| 586 | * the $FABRIC_MOD has already the set session reinstatement |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 587 | * bit from tpg->se_tpg_tfo->shutdown_session() called above. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 588 | */ |
| 589 | if (init_sess) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 590 | tpg->se_tpg_tfo->close_session(init_sess); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 591 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 592 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 593 | if (dynamic_acl) |
| 594 | acl->dynamic_node_acl = 1; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 595 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 596 | return -EINVAL; |
| 597 | } |
Nicholas Bellinger | 140854c | 2011-08-31 12:34:39 -0700 | [diff] [blame] | 598 | spin_unlock_irqrestore(&tpg->session_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 599 | /* |
| 600 | * If the $FABRIC_MOD session for the Initiator Node ACL exists, |
| 601 | * forcefully shutdown the $FABRIC_MOD session/nexus. |
| 602 | */ |
| 603 | if (init_sess) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 604 | tpg->se_tpg_tfo->close_session(init_sess); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 605 | |
Joe Perches | bfb9035 | 2011-08-17 06:58:04 -0700 | [diff] [blame] | 606 | pr_debug("Successfully changed queue depth to: %d for Initiator" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 607 | " Node: %s on %s Target Portal Group: %u\n", queue_depth, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 608 | initiatorname, tpg->se_tpg_tfo->get_fabric_name(), |
| 609 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 610 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 611 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 612 | if (dynamic_acl) |
| 613 | acl->dynamic_node_acl = 1; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 614 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 615 | |
| 616 | return 0; |
| 617 | } |
| 618 | EXPORT_SYMBOL(core_tpg_set_initiator_node_queue_depth); |
| 619 | |
Andy Grover | 79e62fc | 2012-12-11 16:30:53 -0800 | [diff] [blame] | 620 | /* core_tpg_set_initiator_node_tag(): |
| 621 | * |
| 622 | * Initiator nodeacl tags are not used internally, but may be used by |
| 623 | * userspace to emulate aliases or groups. |
| 624 | * Returns length of newly-set tag or -EINVAL. |
| 625 | */ |
| 626 | int core_tpg_set_initiator_node_tag( |
| 627 | struct se_portal_group *tpg, |
| 628 | struct se_node_acl *acl, |
| 629 | const char *new_tag) |
| 630 | { |
| 631 | if (strlen(new_tag) >= MAX_ACL_TAG_SIZE) |
| 632 | return -EINVAL; |
| 633 | |
| 634 | if (!strncmp("NULL", new_tag, 4)) { |
| 635 | acl->acl_tag[0] = '\0'; |
| 636 | return 0; |
| 637 | } |
| 638 | |
| 639 | return snprintf(acl->acl_tag, MAX_ACL_TAG_SIZE, "%s", new_tag); |
| 640 | } |
| 641 | EXPORT_SYMBOL(core_tpg_set_initiator_node_tag); |
| 642 | |
Nicholas Bellinger | 5277797 | 2013-11-06 21:03:43 -0800 | [diff] [blame] | 643 | static void core_tpg_lun_ref_release(struct percpu_ref *ref) |
| 644 | { |
| 645 | struct se_lun *lun = container_of(ref, struct se_lun, lun_ref); |
| 646 | |
| 647 | complete(&lun->lun_ref_comp); |
| 648 | } |
| 649 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 650 | static int core_tpg_setup_virtual_lun0(struct se_portal_group *se_tpg) |
| 651 | { |
| 652 | /* Set in core_dev_setup_virtual_lun0() */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 653 | struct se_device *dev = g_lun0_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 654 | struct se_lun *lun = &se_tpg->tpg_virt_lun0; |
| 655 | u32 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 656 | int ret; |
| 657 | |
| 658 | lun->unpacked_lun = 0; |
| 659 | lun->lun_status = TRANSPORT_LUN_STATUS_FREE; |
| 660 | atomic_set(&lun->lun_acl_count, 0); |
| 661 | init_completion(&lun->lun_shutdown_comp); |
| 662 | INIT_LIST_HEAD(&lun->lun_acl_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 663 | spin_lock_init(&lun->lun_acl_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 664 | spin_lock_init(&lun->lun_sep_lock); |
Nicholas Bellinger | 5277797 | 2013-11-06 21:03:43 -0800 | [diff] [blame] | 665 | init_completion(&lun->lun_ref_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 666 | |
Linus Torvalds | 4e13c5d | 2014-01-31 15:31:23 -0800 | [diff] [blame] | 667 | ret = core_tpg_add_lun(se_tpg, lun, lun_access, dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 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 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 674 | int core_tpg_register( |
Christoph Hellwig | 9ac8928 | 2015-04-08 20:01:35 +0200 | [diff] [blame] | 675 | const struct target_core_fabric_ops *tfo, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 676 | struct se_wwn *se_wwn, |
| 677 | struct se_portal_group *se_tpg, |
| 678 | void *tpg_fabric_ptr, |
| 679 | int se_tpg_type) |
| 680 | { |
| 681 | struct se_lun *lun; |
| 682 | u32 i; |
| 683 | |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 684 | se_tpg->tpg_lun_list = array_zalloc(TRANSPORT_MAX_LUNS_PER_TPG, |
| 685 | sizeof(struct se_lun), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 686 | if (!se_tpg->tpg_lun_list) { |
| 687 | pr_err("Unable to allocate struct se_portal_group->" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 688 | "tpg_lun_list\n"); |
| 689 | return -ENOMEM; |
| 690 | } |
| 691 | |
| 692 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 693 | lun = se_tpg->tpg_lun_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 694 | lun->unpacked_lun = i; |
Nicholas Bellinger | 0ff8754 | 2012-12-04 23:43:57 -0800 | [diff] [blame] | 695 | lun->lun_link_magic = SE_LUN_LINK_MAGIC; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 696 | lun->lun_status = TRANSPORT_LUN_STATUS_FREE; |
| 697 | atomic_set(&lun->lun_acl_count, 0); |
| 698 | init_completion(&lun->lun_shutdown_comp); |
| 699 | INIT_LIST_HEAD(&lun->lun_acl_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 700 | spin_lock_init(&lun->lun_acl_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 701 | spin_lock_init(&lun->lun_sep_lock); |
Nicholas Bellinger | 5277797 | 2013-11-06 21:03:43 -0800 | [diff] [blame] | 702 | init_completion(&lun->lun_ref_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 703 | } |
| 704 | |
| 705 | se_tpg->se_tpg_type = se_tpg_type; |
| 706 | se_tpg->se_tpg_fabric_ptr = tpg_fabric_ptr; |
| 707 | se_tpg->se_tpg_tfo = tfo; |
| 708 | se_tpg->se_tpg_wwn = se_wwn; |
| 709 | atomic_set(&se_tpg->tpg_pr_ref_count, 0); |
| 710 | INIT_LIST_HEAD(&se_tpg->acl_node_list); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 711 | INIT_LIST_HEAD(&se_tpg->se_tpg_node); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 712 | INIT_LIST_HEAD(&se_tpg->tpg_sess_list); |
| 713 | spin_lock_init(&se_tpg->acl_node_lock); |
| 714 | spin_lock_init(&se_tpg->session_lock); |
| 715 | spin_lock_init(&se_tpg->tpg_lun_lock); |
| 716 | |
| 717 | if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) { |
| 718 | if (core_tpg_setup_virtual_lun0(se_tpg) < 0) { |
Wei Yongjun | 0fb889b | 2013-03-15 17:19:26 +0800 | [diff] [blame] | 719 | array_free(se_tpg->tpg_lun_list, |
| 720 | TRANSPORT_MAX_LUNS_PER_TPG); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 721 | return -ENOMEM; |
| 722 | } |
| 723 | } |
| 724 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 725 | spin_lock_bh(&tpg_lock); |
| 726 | list_add_tail(&se_tpg->se_tpg_node, &tpg_list); |
| 727 | spin_unlock_bh(&tpg_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 728 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 729 | pr_debug("TARGET_CORE[%s]: Allocated %s struct se_portal_group for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 730 | " endpoint: %s, Portal Tag: %u\n", tfo->get_fabric_name(), |
| 731 | (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) ? |
| 732 | "Normal" : "Discovery", (tfo->tpg_get_wwn(se_tpg) == NULL) ? |
| 733 | "None" : tfo->tpg_get_wwn(se_tpg), tfo->tpg_get_tag(se_tpg)); |
| 734 | |
| 735 | return 0; |
| 736 | } |
| 737 | EXPORT_SYMBOL(core_tpg_register); |
| 738 | |
| 739 | int core_tpg_deregister(struct se_portal_group *se_tpg) |
| 740 | { |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 741 | struct se_node_acl *nacl, *nacl_tmp; |
| 742 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 743 | pr_debug("TARGET_CORE[%s]: Deallocating %s struct se_portal_group" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 744 | " for endpoint: %s Portal Tag %u\n", |
| 745 | (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) ? |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 746 | "Normal" : "Discovery", se_tpg->se_tpg_tfo->get_fabric_name(), |
| 747 | se_tpg->se_tpg_tfo->tpg_get_wwn(se_tpg), |
| 748 | se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 749 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 750 | spin_lock_bh(&tpg_lock); |
| 751 | list_del(&se_tpg->se_tpg_node); |
| 752 | spin_unlock_bh(&tpg_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 753 | |
| 754 | while (atomic_read(&se_tpg->tpg_pr_ref_count) != 0) |
| 755 | cpu_relax(); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 756 | /* |
| 757 | * Release any remaining demo-mode generated se_node_acl that have |
| 758 | * not been released because of TFO->tpg_check_demo_mode_cache() == 1 |
| 759 | * in transport_deregister_session(). |
| 760 | */ |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 761 | spin_lock_irq(&se_tpg->acl_node_lock); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 762 | list_for_each_entry_safe(nacl, nacl_tmp, &se_tpg->acl_node_list, |
| 763 | acl_list) { |
| 764 | list_del(&nacl->acl_list); |
| 765 | se_tpg->num_node_acls--; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 766 | spin_unlock_irq(&se_tpg->acl_node_lock); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 767 | |
| 768 | core_tpg_wait_for_nacl_pr_ref(nacl); |
| 769 | core_free_device_list_for_node(nacl, se_tpg); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 770 | se_tpg->se_tpg_tfo->tpg_release_fabric_acl(se_tpg, nacl); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 771 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 772 | spin_lock_irq(&se_tpg->acl_node_lock); |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 773 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 774 | spin_unlock_irq(&se_tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 775 | |
| 776 | if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) |
Andy Grover | 9c7d615 | 2014-06-30 16:39:46 -0700 | [diff] [blame] | 777 | core_tpg_remove_lun(se_tpg, &se_tpg->tpg_virt_lun0); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 778 | |
| 779 | se_tpg->se_tpg_fabric_ptr = NULL; |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 780 | array_free(se_tpg->tpg_lun_list, TRANSPORT_MAX_LUNS_PER_TPG); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 781 | return 0; |
| 782 | } |
| 783 | EXPORT_SYMBOL(core_tpg_deregister); |
| 784 | |
Andy Grover | d344f8a | 2013-11-26 12:07:54 -0800 | [diff] [blame] | 785 | struct se_lun *core_tpg_alloc_lun( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 786 | struct se_portal_group *tpg, |
| 787 | u32 unpacked_lun) |
| 788 | { |
| 789 | struct se_lun *lun; |
| 790 | |
| 791 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 792 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER_TPG" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 793 | "-1: %u for Target Portal Group: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 794 | tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 795 | unpacked_lun, TRANSPORT_MAX_LUNS_PER_TPG-1, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 796 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 797 | return ERR_PTR(-EOVERFLOW); |
| 798 | } |
| 799 | |
| 800 | spin_lock(&tpg->tpg_lun_lock); |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 801 | lun = tpg->tpg_lun_list[unpacked_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 802 | if (lun->lun_status == TRANSPORT_LUN_STATUS_ACTIVE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 803 | pr_err("TPG Logical Unit Number: %u is already active" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 804 | " on %s Target Portal Group: %u, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 805 | unpacked_lun, tpg->se_tpg_tfo->get_fabric_name(), |
| 806 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 807 | spin_unlock(&tpg->tpg_lun_lock); |
| 808 | return ERR_PTR(-EINVAL); |
| 809 | } |
| 810 | spin_unlock(&tpg->tpg_lun_lock); |
| 811 | |
| 812 | return lun; |
| 813 | } |
| 814 | |
Andy Grover | d344f8a | 2013-11-26 12:07:54 -0800 | [diff] [blame] | 815 | int core_tpg_add_lun( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 816 | struct se_portal_group *tpg, |
| 817 | struct se_lun *lun, |
| 818 | u32 lun_access, |
Andy Grover | 340dbf7 | 2013-12-12 16:12:33 -0800 | [diff] [blame] | 819 | struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 820 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 821 | int ret; |
| 822 | |
Tejun Heo | 2aad2a8 | 2014-09-24 13:31:50 -0400 | [diff] [blame] | 823 | ret = percpu_ref_init(&lun->lun_ref, core_tpg_lun_ref_release, 0, |
Tejun Heo | a34375e | 2014-09-08 09:51:30 +0900 | [diff] [blame] | 824 | GFP_KERNEL); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 825 | if (ret < 0) |
| 826 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 827 | |
Andy Grover | 340dbf7 | 2013-12-12 16:12:33 -0800 | [diff] [blame] | 828 | ret = core_dev_export(dev, tpg, lun); |
Nicholas Bellinger | 5277797 | 2013-11-06 21:03:43 -0800 | [diff] [blame] | 829 | if (ret < 0) { |
Tejun Heo | 9a1049d | 2014-06-28 08:10:14 -0400 | [diff] [blame] | 830 | percpu_ref_exit(&lun->lun_ref); |
Nicholas Bellinger | 5277797 | 2013-11-06 21:03:43 -0800 | [diff] [blame] | 831 | return ret; |
| 832 | } |
| 833 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 834 | spin_lock(&tpg->tpg_lun_lock); |
| 835 | lun->lun_access = lun_access; |
| 836 | lun->lun_status = TRANSPORT_LUN_STATUS_ACTIVE; |
| 837 | spin_unlock(&tpg->tpg_lun_lock); |
| 838 | |
| 839 | return 0; |
| 840 | } |
| 841 | |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 842 | void core_tpg_remove_lun( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 843 | struct se_portal_group *tpg, |
| 844 | struct se_lun *lun) |
| 845 | { |
Nicholas Bellinger | 4a9a6c8 | 2013-11-06 21:05:19 -0800 | [diff] [blame] | 846 | core_clear_lun_from_tpg(lun, tpg); |
| 847 | transport_clear_lun_ref(lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 848 | |
| 849 | core_dev_unexport(lun->lun_se_dev, tpg, lun); |
| 850 | |
| 851 | spin_lock(&tpg->tpg_lun_lock); |
| 852 | lun->lun_status = TRANSPORT_LUN_STATUS_FREE; |
| 853 | spin_unlock(&tpg->tpg_lun_lock); |
| 854 | |
Tejun Heo | 9a1049d | 2014-06-28 08:10:14 -0400 | [diff] [blame] | 855 | percpu_ref_exit(&lun->lun_ref); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 856 | } |