Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | * Filename: target_core_device.c (based on iscsi_target_device.c) |
| 3 | * |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 4 | * This file contains the TCM Virtual Device and Disk Transport |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 5 | * agnostic related functions. |
| 6 | * |
Nicholas Bellinger | 4c76251 | 2013-09-05 15:29:12 -0700 | [diff] [blame] | 7 | * (c) Copyright 2003-2013 Datera, Inc. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 8 | * |
| 9 | * Nicholas A. Bellinger <nab@kernel.org> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 24 | * |
| 25 | ******************************************************************************/ |
| 26 | |
| 27 | #include <linux/net.h> |
| 28 | #include <linux/string.h> |
| 29 | #include <linux/delay.h> |
| 30 | #include <linux/timer.h> |
| 31 | #include <linux/slab.h> |
| 32 | #include <linux/spinlock.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 33 | #include <linux/kthread.h> |
| 34 | #include <linux/in.h> |
Paul Gortmaker | c53181a | 2011-08-30 18:16:43 -0400 | [diff] [blame] | 35 | #include <linux/export.h> |
Andy Grover | 7bfea53b | 2015-05-19 14:44:40 -0700 | [diff] [blame] | 36 | #include <asm/unaligned.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 37 | #include <net/sock.h> |
| 38 | #include <net/tcp.h> |
Bart Van Assche | ba92999 | 2015-05-08 10:11:12 +0200 | [diff] [blame] | 39 | #include <scsi/scsi_common.h> |
| 40 | #include <scsi/scsi_proto.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 41 | |
| 42 | #include <target/target_core_base.h> |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 43 | #include <target/target_core_backend.h> |
| 44 | #include <target/target_core_fabric.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 45 | |
Christoph Hellwig | e26d99a | 2011-11-14 12:30:30 -0500 | [diff] [blame] | 46 | #include "target_core_internal.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 47 | #include "target_core_alua.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 48 | #include "target_core_pr.h" |
| 49 | #include "target_core_ua.h" |
| 50 | |
Nicholas Bellinger | d9ea32b | 2013-08-22 11:33:37 -0700 | [diff] [blame] | 51 | DEFINE_MUTEX(g_device_mutex); |
| 52 | LIST_HEAD(g_device_list); |
| 53 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 54 | static struct se_hba *lun0_hba; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 55 | /* not static, needed by tpg.c */ |
| 56 | struct se_device *g_lun0_dev; |
| 57 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 58 | sense_reason_t |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 59 | transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 60 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 61 | struct se_lun *se_lun = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 62 | struct se_session *se_sess = se_cmd->se_sess; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 63 | struct se_node_acl *nacl = se_sess->se_node_acl; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 64 | struct se_dev_entry *deve; |
Nicholas Bellinger | 8fa3a86 | 2015-09-16 20:23:53 -0700 | [diff] [blame] | 65 | sense_reason_t ret = TCM_NO_SENSE; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 66 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 67 | rcu_read_lock(); |
| 68 | deve = target_nacl_find_deve(nacl, unpacked_lun); |
| 69 | if (deve) { |
| 70 | atomic_long_inc(&deve->total_cmds); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 71 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 72 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 73 | atomic_long_add(se_cmd->data_length, |
| 74 | &deve->write_bytes); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 75 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 76 | atomic_long_add(se_cmd->data_length, |
| 77 | &deve->read_bytes); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 78 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 79 | se_lun = rcu_dereference(deve->se_lun); |
| 80 | se_cmd->se_lun = rcu_dereference(deve->se_lun); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 81 | se_cmd->pr_res_key = deve->pr_res_key; |
| 82 | se_cmd->orig_fe_lun = unpacked_lun; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 83 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
Nicholas Bellinger | 5277797 | 2013-11-06 21:03:43 -0800 | [diff] [blame] | 84 | |
| 85 | percpu_ref_get(&se_lun->lun_ref); |
| 86 | se_cmd->lun_ref_active = true; |
Nicholas Bellinger | 8fa3a86 | 2015-09-16 20:23:53 -0700 | [diff] [blame] | 87 | |
| 88 | if ((se_cmd->data_direction == DMA_TO_DEVICE) && |
| 89 | (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { |
| 90 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
| 91 | " Access for 0x%08llx\n", |
| 92 | se_cmd->se_tfo->get_fabric_name(), |
| 93 | unpacked_lun); |
| 94 | rcu_read_unlock(); |
| 95 | ret = TCM_WRITE_PROTECTED; |
| 96 | goto ref_dev; |
| 97 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 98 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 99 | rcu_read_unlock(); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 100 | |
| 101 | if (!se_lun) { |
| 102 | /* |
| 103 | * Use the se_portal_group->tpg_virt_lun0 to allow for |
| 104 | * REPORT_LUNS, et al to be returned when no active |
| 105 | * MappedLUN=0 exists for this Initiator Port. |
| 106 | */ |
| 107 | if (unpacked_lun != 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 108 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 109 | " Access for 0x%08llx\n", |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 110 | se_cmd->se_tfo->get_fabric_name(), |
| 111 | unpacked_lun); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 112 | return TCM_NON_EXISTENT_LUN; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 113 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 114 | |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 115 | se_lun = se_sess->se_tpg->tpg_virt_lun0; |
| 116 | se_cmd->se_lun = se_sess->se_tpg->tpg_virt_lun0; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 117 | se_cmd->orig_fe_lun = 0; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 118 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
Nicholas Bellinger | 5277797 | 2013-11-06 21:03:43 -0800 | [diff] [blame] | 119 | |
| 120 | percpu_ref_get(&se_lun->lun_ref); |
| 121 | se_cmd->lun_ref_active = true; |
Nicholas Bellinger | 8fa3a86 | 2015-09-16 20:23:53 -0700 | [diff] [blame] | 122 | |
| 123 | /* |
| 124 | * Force WRITE PROTECT for virtual LUN 0 |
| 125 | */ |
| 126 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && |
| 127 | (se_cmd->data_direction != DMA_NONE)) { |
| 128 | ret = TCM_WRITE_PROTECTED; |
| 129 | goto ref_dev; |
| 130 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 131 | } |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 132 | /* |
| 133 | * RCU reference protected by percpu se_lun->lun_ref taken above that |
| 134 | * must drop to zero (including initial reference) before this se_lun |
| 135 | * pointer can be kfree_rcu() by the final se_lun->lun_group put via |
| 136 | * target_core_fabric_configfs.c:target_fabric_port_release |
| 137 | */ |
Nicholas Bellinger | 8fa3a86 | 2015-09-16 20:23:53 -0700 | [diff] [blame] | 138 | ref_dev: |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 139 | se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev); |
| 140 | atomic_long_inc(&se_cmd->se_dev->num_cmds); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 141 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 142 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 143 | atomic_long_add(se_cmd->data_length, |
| 144 | &se_cmd->se_dev->write_bytes); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 145 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 146 | atomic_long_add(se_cmd->data_length, |
| 147 | &se_cmd->se_dev->read_bytes); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 148 | |
Nicholas Bellinger | 8fa3a86 | 2015-09-16 20:23:53 -0700 | [diff] [blame] | 149 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 150 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 151 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 152 | |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 153 | int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u64 unpacked_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 154 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 155 | struct se_dev_entry *deve; |
| 156 | struct se_lun *se_lun = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 157 | struct se_session *se_sess = se_cmd->se_sess; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 158 | struct se_node_acl *nacl = se_sess->se_node_acl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 159 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 160 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 161 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 162 | rcu_read_lock(); |
| 163 | deve = target_nacl_find_deve(nacl, unpacked_lun); |
| 164 | if (deve) { |
| 165 | se_tmr->tmr_lun = rcu_dereference(deve->se_lun); |
| 166 | se_cmd->se_lun = rcu_dereference(deve->se_lun); |
| 167 | se_lun = rcu_dereference(deve->se_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 168 | se_cmd->pr_res_key = deve->pr_res_key; |
| 169 | se_cmd->orig_fe_lun = unpacked_lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 170 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 171 | rcu_read_unlock(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 172 | |
| 173 | if (!se_lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 174 | pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 175 | " Access for 0x%08llx\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 176 | se_cmd->se_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 177 | unpacked_lun); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 178 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 179 | } |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 180 | /* |
| 181 | * XXX: Add percpu se_lun->lun_ref reference count for TMR |
| 182 | */ |
| 183 | se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev); |
| 184 | se_tmr->tmr_dev = rcu_dereference_raw(se_lun->lun_se_dev); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 185 | |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 186 | spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 187 | list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list); |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 188 | spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 189 | |
| 190 | return 0; |
| 191 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 192 | EXPORT_SYMBOL(transport_lookup_tmr_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 193 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 194 | bool target_lun_is_rdonly(struct se_cmd *cmd) |
| 195 | { |
| 196 | struct se_session *se_sess = cmd->se_sess; |
| 197 | struct se_dev_entry *deve; |
| 198 | bool ret; |
| 199 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 200 | rcu_read_lock(); |
| 201 | deve = target_nacl_find_deve(se_sess->se_node_acl, cmd->orig_fe_lun); |
| 202 | ret = (deve && deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY); |
| 203 | rcu_read_unlock(); |
| 204 | |
| 205 | return ret; |
| 206 | } |
| 207 | EXPORT_SYMBOL(target_lun_is_rdonly); |
| 208 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 209 | /* |
| 210 | * This function is called from core_scsi3_emulate_pro_register_and_move() |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 211 | * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_kref |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 212 | * when a matching rtpi is found. |
| 213 | */ |
| 214 | struct se_dev_entry *core_get_se_deve_from_rtpi( |
| 215 | struct se_node_acl *nacl, |
| 216 | u16 rtpi) |
| 217 | { |
| 218 | struct se_dev_entry *deve; |
| 219 | struct se_lun *lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 220 | struct se_portal_group *tpg = nacl->se_tpg; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 221 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 222 | rcu_read_lock(); |
| 223 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { |
| 224 | lun = rcu_dereference(deve->se_lun); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 225 | if (!lun) { |
| 226 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 227 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 228 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 229 | continue; |
| 230 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 231 | if (lun->lun_rtpi != rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 232 | continue; |
| 233 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 234 | kref_get(&deve->pr_kref); |
| 235 | rcu_read_unlock(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 236 | |
| 237 | return deve; |
| 238 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 239 | rcu_read_unlock(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 240 | |
| 241 | return NULL; |
| 242 | } |
| 243 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 244 | void core_free_device_list_for_node( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 245 | struct se_node_acl *nacl, |
| 246 | struct se_portal_group *tpg) |
| 247 | { |
| 248 | struct se_dev_entry *deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 249 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 250 | mutex_lock(&nacl->lun_entry_mutex); |
| 251 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { |
| 252 | struct se_lun *lun = rcu_dereference_check(deve->se_lun, |
| 253 | lockdep_is_held(&nacl->lun_entry_mutex)); |
| 254 | core_disable_device_list_for_node(lun, deve, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 255 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 256 | mutex_unlock(&nacl->lun_entry_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 257 | } |
| 258 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 259 | void core_update_device_list_access( |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 260 | u64 mapped_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 261 | u32 lun_access, |
| 262 | struct se_node_acl *nacl) |
| 263 | { |
| 264 | struct se_dev_entry *deve; |
| 265 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 266 | mutex_lock(&nacl->lun_entry_mutex); |
| 267 | deve = target_nacl_find_deve(nacl, mapped_lun); |
| 268 | if (deve) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 269 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
| 270 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; |
| 271 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 272 | } else { |
| 273 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; |
| 274 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 275 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 276 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 277 | mutex_unlock(&nacl->lun_entry_mutex); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 278 | } |
| 279 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 280 | /* |
| 281 | * Called with rcu_read_lock or nacl->device_list_lock held. |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 282 | */ |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 283 | struct se_dev_entry *target_nacl_find_deve(struct se_node_acl *nacl, u64 mapped_lun) |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 284 | { |
| 285 | struct se_dev_entry *deve; |
| 286 | |
| 287 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) |
| 288 | if (deve->mapped_lun == mapped_lun) |
| 289 | return deve; |
| 290 | |
| 291 | return NULL; |
| 292 | } |
| 293 | EXPORT_SYMBOL(target_nacl_find_deve); |
| 294 | |
| 295 | void target_pr_kref_release(struct kref *kref) |
| 296 | { |
| 297 | struct se_dev_entry *deve = container_of(kref, struct se_dev_entry, |
| 298 | pr_kref); |
| 299 | complete(&deve->pr_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 300 | } |
| 301 | |
Hannes Reinecke | 7c0d0d5 | 2015-06-11 10:01:29 +0200 | [diff] [blame] | 302 | static void |
| 303 | target_luns_data_has_changed(struct se_node_acl *nacl, struct se_dev_entry *new, |
| 304 | bool skip_new) |
| 305 | { |
| 306 | struct se_dev_entry *tmp; |
| 307 | |
| 308 | rcu_read_lock(); |
| 309 | hlist_for_each_entry_rcu(tmp, &nacl->lun_entry_hlist, link) { |
| 310 | if (skip_new && tmp == new) |
| 311 | continue; |
| 312 | core_scsi3_ua_allocate(tmp, 0x3F, |
| 313 | ASCQ_3FH_REPORTED_LUNS_DATA_HAS_CHANGED); |
| 314 | } |
| 315 | rcu_read_unlock(); |
| 316 | } |
| 317 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 318 | int core_enable_device_list_for_node( |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 319 | struct se_lun *lun, |
| 320 | struct se_lun_acl *lun_acl, |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 321 | u64 mapped_lun, |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 322 | u32 lun_access, |
| 323 | struct se_node_acl *nacl, |
| 324 | struct se_portal_group *tpg) |
| 325 | { |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 326 | struct se_dev_entry *orig, *new; |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 327 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 328 | new = kzalloc(sizeof(*new), GFP_KERNEL); |
| 329 | if (!new) { |
| 330 | pr_err("Unable to allocate se_dev_entry memory\n"); |
| 331 | return -ENOMEM; |
| 332 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 333 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 334 | atomic_set(&new->ua_count, 0); |
| 335 | spin_lock_init(&new->ua_lock); |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 336 | INIT_LIST_HEAD(&new->ua_list); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 337 | INIT_LIST_HEAD(&new->lun_link); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 338 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 339 | new->mapped_lun = mapped_lun; |
| 340 | kref_init(&new->pr_kref); |
| 341 | init_completion(&new->pr_comp); |
| 342 | |
| 343 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) |
| 344 | new->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 345 | else |
| 346 | new->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 347 | |
| 348 | new->creation_time = get_jiffies_64(); |
| 349 | new->attach_count++; |
| 350 | |
| 351 | mutex_lock(&nacl->lun_entry_mutex); |
| 352 | orig = target_nacl_find_deve(nacl, mapped_lun); |
| 353 | if (orig && orig->se_lun) { |
| 354 | struct se_lun *orig_lun = rcu_dereference_check(orig->se_lun, |
| 355 | lockdep_is_held(&nacl->lun_entry_mutex)); |
| 356 | |
| 357 | if (orig_lun != lun) { |
| 358 | pr_err("Existing orig->se_lun doesn't match new lun" |
| 359 | " for dynamic -> explicit NodeACL conversion:" |
| 360 | " %s\n", nacl->initiatorname); |
| 361 | mutex_unlock(&nacl->lun_entry_mutex); |
| 362 | kfree(new); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 363 | return -EINVAL; |
| 364 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 365 | BUG_ON(orig->se_lun_acl != NULL); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 366 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 367 | rcu_assign_pointer(new->se_lun, lun); |
| 368 | rcu_assign_pointer(new->se_lun_acl, lun_acl); |
| 369 | hlist_del_rcu(&orig->link); |
| 370 | hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); |
| 371 | mutex_unlock(&nacl->lun_entry_mutex); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 372 | |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 373 | spin_lock(&lun->lun_deve_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 374 | list_del(&orig->lun_link); |
| 375 | list_add_tail(&new->lun_link, &lun->lun_deve_list); |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 376 | spin_unlock(&lun->lun_deve_lock); |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 377 | |
| 378 | kref_put(&orig->pr_kref, target_pr_kref_release); |
| 379 | wait_for_completion(&orig->pr_comp); |
| 380 | |
Hannes Reinecke | 7c0d0d5 | 2015-06-11 10:01:29 +0200 | [diff] [blame] | 381 | target_luns_data_has_changed(nacl, new, true); |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 382 | kfree_rcu(orig, rcu_head); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 383 | return 0; |
| 384 | } |
| 385 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 386 | rcu_assign_pointer(new->se_lun, lun); |
| 387 | rcu_assign_pointer(new->se_lun_acl, lun_acl); |
| 388 | hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); |
| 389 | mutex_unlock(&nacl->lun_entry_mutex); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 390 | |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 391 | spin_lock(&lun->lun_deve_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 392 | list_add_tail(&new->lun_link, &lun->lun_deve_list); |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 393 | spin_unlock(&lun->lun_deve_lock); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 394 | |
Hannes Reinecke | 7c0d0d5 | 2015-06-11 10:01:29 +0200 | [diff] [blame] | 395 | target_luns_data_has_changed(nacl, new, true); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 396 | return 0; |
| 397 | } |
| 398 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 399 | /* |
| 400 | * Called with se_node_acl->lun_entry_mutex held. |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 401 | */ |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 402 | void core_disable_device_list_for_node( |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 403 | struct se_lun *lun, |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 404 | struct se_dev_entry *orig, |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 405 | struct se_node_acl *nacl, |
| 406 | struct se_portal_group *tpg) |
| 407 | { |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 408 | /* |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 409 | * rcu_dereference_raw protected by se_lun->lun_group symlink |
| 410 | * reference to se_device->dev_group. |
| 411 | */ |
| 412 | struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 413 | /* |
| 414 | * If the MappedLUN entry is being disabled, the entry in |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 415 | * lun->lun_deve_list must be removed now before clearing the |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 416 | * struct se_dev_entry pointers below as logic in |
| 417 | * core_alua_do_transition_tg_pt() depends on these being present. |
| 418 | * |
| 419 | * deve->se_lun_acl will be NULL for demo-mode created LUNs |
| 420 | * that have not been explicitly converted to MappedLUNs -> |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 421 | * struct se_lun_acl, but we remove deve->lun_link from |
| 422 | * lun->lun_deve_list. This also means that active UAs and |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 423 | * NodeACL context specific PR metadata for demo-mode |
| 424 | * MappedLUN *deve will be released below.. |
| 425 | */ |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 426 | spin_lock(&lun->lun_deve_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 427 | list_del(&orig->lun_link); |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 428 | spin_unlock(&lun->lun_deve_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 429 | /* |
| 430 | * Disable struct se_dev_entry LUN ACL mapping |
| 431 | */ |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 432 | core_scsi3_ua_release_all(orig); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 433 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 434 | hlist_del_rcu(&orig->link); |
Nicholas Bellinger | 80bfdfa | 2015-03-25 01:02:57 -0700 | [diff] [blame] | 435 | clear_bit(DEF_PR_REG_ACTIVE, &orig->deve_flags); |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 436 | orig->lun_flags = 0; |
| 437 | orig->creation_time = 0; |
| 438 | orig->attach_count--; |
| 439 | /* |
| 440 | * Before firing off RCU callback, wait for any in process SPEC_I_PT=1 |
| 441 | * or REGISTER_AND_MOVE PR operation to complete. |
| 442 | */ |
| 443 | kref_put(&orig->pr_kref, target_pr_kref_release); |
| 444 | wait_for_completion(&orig->pr_comp); |
| 445 | |
Nicholas Bellinger | 3ccd6e8 | 2015-09-13 02:30:46 -0700 | [diff] [blame] | 446 | rcu_assign_pointer(orig->se_lun, NULL); |
| 447 | rcu_assign_pointer(orig->se_lun_acl, NULL); |
| 448 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 449 | kfree_rcu(orig, rcu_head); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 450 | |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 451 | core_scsi3_free_pr_reg_from_nacl(dev, nacl); |
Hannes Reinecke | 7c0d0d5 | 2015-06-11 10:01:29 +0200 | [diff] [blame] | 452 | target_luns_data_has_changed(nacl, NULL, false); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 453 | } |
| 454 | |
| 455 | /* core_clear_lun_from_tpg(): |
| 456 | * |
| 457 | * |
| 458 | */ |
| 459 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) |
| 460 | { |
| 461 | struct se_node_acl *nacl; |
| 462 | struct se_dev_entry *deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 463 | |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 464 | mutex_lock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 465 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 466 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 467 | mutex_lock(&nacl->lun_entry_mutex); |
| 468 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { |
| 469 | struct se_lun *tmp_lun = rcu_dereference_check(deve->se_lun, |
| 470 | lockdep_is_held(&nacl->lun_entry_mutex)); |
| 471 | |
| 472 | if (lun != tmp_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 473 | continue; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 474 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 475 | core_disable_device_list_for_node(lun, deve, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 476 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 477 | mutex_unlock(&nacl->lun_entry_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 478 | } |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 479 | mutex_unlock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 480 | } |
| 481 | |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 482 | int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 483 | { |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 484 | struct se_lun *tmp; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 485 | |
| 486 | spin_lock(&dev->se_port_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 487 | if (dev->export_count == 0x0000ffff) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 488 | pr_warn("Reached dev->dev_port_count ==" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 489 | " 0x0000ffff\n"); |
| 490 | spin_unlock(&dev->se_port_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 491 | return -ENOSPC; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 492 | } |
| 493 | again: |
| 494 | /* |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 495 | * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 496 | * Here is the table from spc4r17 section 7.7.3.8. |
| 497 | * |
| 498 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field |
| 499 | * |
| 500 | * Code Description |
| 501 | * 0h Reserved |
| 502 | * 1h Relative port 1, historically known as port A |
| 503 | * 2h Relative port 2, historically known as port B |
| 504 | * 3h to FFFFh Relative port 3 through 65 535 |
| 505 | */ |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 506 | lun->lun_rtpi = dev->dev_rpti_counter++; |
| 507 | if (!lun->lun_rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 508 | goto again; |
| 509 | |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 510 | list_for_each_entry(tmp, &dev->dev_sep_list, lun_dev_link) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 511 | /* |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 512 | * Make sure RELATIVE TARGET PORT IDENTIFIER is unique |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 513 | * for 16-bit wrap.. |
| 514 | */ |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 515 | if (lun->lun_rtpi == tmp->lun_rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 516 | goto again; |
| 517 | } |
| 518 | spin_unlock(&dev->se_port_lock); |
| 519 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 520 | return 0; |
| 521 | } |
| 522 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 523 | static void se_release_vpd_for_dev(struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 524 | { |
| 525 | struct t10_vpd *vpd, *vpd_tmp; |
| 526 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 527 | spin_lock(&dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 528 | list_for_each_entry_safe(vpd, vpd_tmp, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 529 | &dev->t10_wwn.t10_vpd_list, vpd_list) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 530 | list_del(&vpd->vpd_list); |
| 531 | kfree(vpd); |
| 532 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 533 | spin_unlock(&dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 534 | } |
| 535 | |
Roland Dreier | c804537 | 2012-07-16 15:17:12 -0700 | [diff] [blame] | 536 | static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 537 | { |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 538 | u32 aligned_max_sectors; |
| 539 | u32 alignment; |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 540 | /* |
| 541 | * Limit max_sectors to a PAGE_SIZE aligned value for modern |
| 542 | * transport_allocate_data_tasks() operation. |
| 543 | */ |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 544 | alignment = max(1ul, PAGE_SIZE / block_size); |
| 545 | aligned_max_sectors = rounddown(max_sectors, alignment); |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 546 | |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 547 | if (max_sectors != aligned_max_sectors) |
| 548 | pr_info("Rounding down aligned max_sectors from %u to %u\n", |
| 549 | max_sectors, aligned_max_sectors); |
| 550 | |
| 551 | return aligned_max_sectors; |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 552 | } |
| 553 | |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 554 | int core_dev_add_lun( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 555 | struct se_portal_group *tpg, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 556 | struct se_device *dev, |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 557 | struct se_lun *lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 558 | { |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 559 | int rc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 560 | |
Andy Grover | d344f8a | 2013-11-26 12:07:54 -0800 | [diff] [blame] | 561 | rc = core_tpg_add_lun(tpg, lun, |
Nicholas Bellinger | 58d9261 | 2012-03-20 21:26:48 -0700 | [diff] [blame] | 562 | TRANSPORT_LUNFLAGS_READ_WRITE, dev); |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 563 | if (rc < 0) |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 564 | return rc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 565 | |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 566 | pr_debug("%s_TPG[%u]_LUN[%llu] - Activated %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 567 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
Andy Grover | 2af7973 | 2013-11-26 11:55:22 -0800 | [diff] [blame] | 568 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Andy Grover | 2dca673 | 2012-07-12 17:34:55 -0700 | [diff] [blame] | 569 | tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 570 | /* |
| 571 | * Update LUN maps for dynamically added initiators when |
| 572 | * generate_node_acl is enabled. |
| 573 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 574 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 575 | struct se_node_acl *acl; |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 576 | |
| 577 | mutex_lock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 578 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 579 | if (acl->dynamic_node_acl && |
| 580 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || |
| 581 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { |
Nicholas Bellinger | df9766c | 2015-05-22 02:05:19 +0000 | [diff] [blame] | 582 | core_tpg_add_node_to_devs(acl, tpg, lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 583 | } |
| 584 | } |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 585 | mutex_unlock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 586 | } |
| 587 | |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 588 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 589 | } |
| 590 | |
| 591 | /* core_dev_del_lun(): |
| 592 | * |
| 593 | * |
| 594 | */ |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 595 | void core_dev_del_lun( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 596 | struct se_portal_group *tpg, |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 597 | struct se_lun *lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 598 | { |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 599 | pr_debug("%s_TPG[%u]_LUN[%llu] - Deactivating %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 600 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 601 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 602 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 603 | |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 604 | core_tpg_remove_lun(tpg, lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 605 | } |
| 606 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 607 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( |
| 608 | struct se_portal_group *tpg, |
Nicholas Bellinger | fcf2948 | 2013-02-18 18:00:33 -0800 | [diff] [blame] | 609 | struct se_node_acl *nacl, |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 610 | u64 mapped_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 611 | int *ret) |
| 612 | { |
| 613 | struct se_lun_acl *lacl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 614 | |
Nicholas Bellinger | fcf2948 | 2013-02-18 18:00:33 -0800 | [diff] [blame] | 615 | if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 616 | pr_err("%s InitiatorName exceeds maximum size.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 617 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 618 | *ret = -EOVERFLOW; |
| 619 | return NULL; |
| 620 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 621 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 622 | if (!lacl) { |
| 623 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 624 | *ret = -ENOMEM; |
| 625 | return NULL; |
| 626 | } |
| 627 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 628 | lacl->mapped_lun = mapped_lun; |
| 629 | lacl->se_lun_nacl = nacl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 630 | |
| 631 | return lacl; |
| 632 | } |
| 633 | |
| 634 | int core_dev_add_initiator_node_lun_acl( |
| 635 | struct se_portal_group *tpg, |
| 636 | struct se_lun_acl *lacl, |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 637 | struct se_lun *lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 638 | u32 lun_access) |
| 639 | { |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 640 | struct se_node_acl *nacl = lacl->se_lun_nacl; |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 641 | /* |
| 642 | * rcu_dereference_raw protected by se_lun->lun_group symlink |
| 643 | * reference to se_device->dev_group. |
| 644 | */ |
| 645 | struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 646 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 647 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 648 | return -EINVAL; |
| 649 | |
| 650 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && |
| 651 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) |
| 652 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 653 | |
| 654 | lacl->se_lun = lun; |
| 655 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 656 | if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, |
| 657 | lun_access, nacl, tpg) < 0) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 658 | return -EINVAL; |
| 659 | |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 660 | pr_debug("%s_TPG[%hu]_LUN[%llu->%llu] - Added %s ACL for " |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 661 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 662 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, lacl->mapped_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 663 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
Chris Zankel | b6a54b8 | 2015-07-20 16:29:50 -0700 | [diff] [blame] | 664 | nacl->initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 665 | /* |
| 666 | * Check to see if there are any existing persistent reservation APTPL |
| 667 | * pre-registrations that need to be enabled for this LUN ACL.. |
| 668 | */ |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 669 | core_scsi3_check_aptpl_registration(dev, tpg, lun, nacl, |
Nicholas Bellinger | e248056 | 2014-10-04 04:23:15 +0000 | [diff] [blame] | 670 | lacl->mapped_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 671 | return 0; |
| 672 | } |
| 673 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 674 | int core_dev_del_initiator_node_lun_acl( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 675 | struct se_lun *lun, |
| 676 | struct se_lun_acl *lacl) |
| 677 | { |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 678 | struct se_portal_group *tpg = lun->lun_tpg; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 679 | struct se_node_acl *nacl; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 680 | struct se_dev_entry *deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 681 | |
| 682 | nacl = lacl->se_lun_nacl; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 683 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 684 | return -EINVAL; |
| 685 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 686 | mutex_lock(&nacl->lun_entry_mutex); |
| 687 | deve = target_nacl_find_deve(nacl, lacl->mapped_lun); |
| 688 | if (deve) |
| 689 | core_disable_device_list_for_node(lun, deve, nacl, tpg); |
| 690 | mutex_unlock(&nacl->lun_entry_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 691 | |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 692 | pr_debug("%s_TPG[%hu]_LUN[%llu] - Removed ACL for" |
| 693 | " InitiatorNode: %s Mapped LUN: %llu\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 694 | tpg->se_tpg_tfo->get_fabric_name(), |
| 695 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Chris Zankel | b6a54b8 | 2015-07-20 16:29:50 -0700 | [diff] [blame] | 696 | nacl->initiatorname, lacl->mapped_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 697 | |
| 698 | return 0; |
| 699 | } |
| 700 | |
| 701 | void core_dev_free_initiator_node_lun_acl( |
| 702 | struct se_portal_group *tpg, |
| 703 | struct se_lun_acl *lacl) |
| 704 | { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 705 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 706 | " Mapped LUN: %llu\n", tpg->se_tpg_tfo->get_fabric_name(), |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 707 | tpg->se_tpg_tfo->tpg_get_tag(tpg), |
| 708 | tpg->se_tpg_tfo->get_fabric_name(), |
Chris Zankel | b6a54b8 | 2015-07-20 16:29:50 -0700 | [diff] [blame] | 709 | lacl->se_lun_nacl->initiatorname, lacl->mapped_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 710 | |
| 711 | kfree(lacl); |
| 712 | } |
| 713 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 714 | static void scsi_dump_inquiry(struct se_device *dev) |
| 715 | { |
| 716 | struct t10_wwn *wwn = &dev->t10_wwn; |
| 717 | char buf[17]; |
| 718 | int i, device_type; |
| 719 | /* |
| 720 | * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer |
| 721 | */ |
| 722 | for (i = 0; i < 8; i++) |
| 723 | if (wwn->vendor[i] >= 0x20) |
| 724 | buf[i] = wwn->vendor[i]; |
| 725 | else |
| 726 | buf[i] = ' '; |
| 727 | buf[i] = '\0'; |
| 728 | pr_debug(" Vendor: %s\n", buf); |
| 729 | |
| 730 | for (i = 0; i < 16; i++) |
| 731 | if (wwn->model[i] >= 0x20) |
| 732 | buf[i] = wwn->model[i]; |
| 733 | else |
| 734 | buf[i] = ' '; |
| 735 | buf[i] = '\0'; |
| 736 | pr_debug(" Model: %s\n", buf); |
| 737 | |
| 738 | for (i = 0; i < 4; i++) |
| 739 | if (wwn->revision[i] >= 0x20) |
| 740 | buf[i] = wwn->revision[i]; |
| 741 | else |
| 742 | buf[i] = ' '; |
| 743 | buf[i] = '\0'; |
| 744 | pr_debug(" Revision: %s\n", buf); |
| 745 | |
| 746 | device_type = dev->transport->get_device_type(dev); |
| 747 | pr_debug(" Type: %s ", scsi_device_type(device_type)); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 748 | } |
| 749 | |
| 750 | struct se_device *target_alloc_device(struct se_hba *hba, const char *name) |
| 751 | { |
| 752 | struct se_device *dev; |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 753 | struct se_lun *xcopy_lun; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 754 | |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame] | 755 | dev = hba->backend->ops->alloc_device(hba, name); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 756 | if (!dev) |
| 757 | return NULL; |
| 758 | |
Nicholas Bellinger | 0ff8754 | 2012-12-04 23:43:57 -0800 | [diff] [blame] | 759 | dev->dev_link_magic = SE_DEV_LINK_MAGIC; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 760 | dev->se_hba = hba; |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame] | 761 | dev->transport = hba->backend->ops; |
Sagi Grimberg | fe052a1 | 2015-06-29 13:08:19 +0300 | [diff] [blame] | 762 | dev->prot_length = sizeof(struct t10_pi_tuple); |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 763 | dev->hba_index = hba->hba_index; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 764 | |
| 765 | INIT_LIST_HEAD(&dev->dev_list); |
| 766 | INIT_LIST_HEAD(&dev->dev_sep_list); |
| 767 | INIT_LIST_HEAD(&dev->dev_tmr_list); |
| 768 | INIT_LIST_HEAD(&dev->delayed_cmd_list); |
| 769 | INIT_LIST_HEAD(&dev->state_list); |
| 770 | INIT_LIST_HEAD(&dev->qf_cmd_list); |
Nicholas Bellinger | d9ea32b | 2013-08-22 11:33:37 -0700 | [diff] [blame] | 771 | INIT_LIST_HEAD(&dev->g_dev_node); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 772 | spin_lock_init(&dev->execute_task_lock); |
| 773 | spin_lock_init(&dev->delayed_cmd_lock); |
| 774 | spin_lock_init(&dev->dev_reservation_lock); |
| 775 | spin_lock_init(&dev->se_port_lock); |
| 776 | spin_lock_init(&dev->se_tmr_lock); |
| 777 | spin_lock_init(&dev->qf_cmd_lock); |
Nicholas Bellinger | 68ff9b9 | 2013-08-19 15:20:28 -0700 | [diff] [blame] | 778 | sema_init(&dev->caw_sem, 1); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 779 | INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list); |
| 780 | spin_lock_init(&dev->t10_wwn.t10_vpd_lock); |
| 781 | INIT_LIST_HEAD(&dev->t10_pr.registration_list); |
| 782 | INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list); |
| 783 | spin_lock_init(&dev->t10_pr.registration_lock); |
| 784 | spin_lock_init(&dev->t10_pr.aptpl_reg_lock); |
| 785 | INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list); |
| 786 | spin_lock_init(&dev->t10_alua.tg_pt_gps_lock); |
Hannes Reinecke | c66094b | 2013-12-17 09:18:49 +0100 | [diff] [blame] | 787 | INIT_LIST_HEAD(&dev->t10_alua.lba_map_list); |
| 788 | spin_lock_init(&dev->t10_alua.lba_map_lock); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 789 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 790 | dev->t10_wwn.t10_dev = dev; |
| 791 | dev->t10_alua.t10_dev = dev; |
| 792 | |
| 793 | dev->dev_attrib.da_dev = dev; |
Tregaron Bayly | adfa957 | 2013-01-31 15:30:24 -0700 | [diff] [blame] | 794 | dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS; |
Christoph Hellwig | 814e5b4 | 2015-04-20 15:00:30 +0200 | [diff] [blame] | 795 | dev->dev_attrib.emulate_dpo = 1; |
| 796 | dev->dev_attrib.emulate_fua_write = 1; |
| 797 | dev->dev_attrib.emulate_fua_read = 1; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 798 | dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; |
| 799 | dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; |
| 800 | dev->dev_attrib.emulate_tas = DA_EMULATE_TAS; |
| 801 | dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; |
| 802 | dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; |
Nicholas Bellinger | 0123a9e | 2013-08-20 14:24:09 -0700 | [diff] [blame] | 803 | dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; |
Nicholas Bellinger | d397a44 | 2013-08-22 14:17:20 -0700 | [diff] [blame] | 804 | dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; |
Nicholas Bellinger | 2ed22c9 | 2014-01-08 18:19:31 +0000 | [diff] [blame] | 805 | dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 806 | dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
Nicholas Bellinger | 92404e6 | 2014-10-04 01:06:08 +0000 | [diff] [blame] | 807 | dev->dev_attrib.force_pr_aptpl = DA_FORCE_PR_APTPL; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 808 | dev->dev_attrib.is_nonrot = DA_IS_NONROT; |
| 809 | dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; |
| 810 | dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; |
| 811 | dev->dev_attrib.max_unmap_block_desc_count = |
| 812 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; |
| 813 | dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; |
| 814 | dev->dev_attrib.unmap_granularity_alignment = |
| 815 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; |
Nicholas Bellinger | 773cbaf | 2012-11-15 11:02:49 -0800 | [diff] [blame] | 816 | dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 817 | |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 818 | xcopy_lun = &dev->xcopy_lun; |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 819 | rcu_assign_pointer(xcopy_lun->lun_se_dev, dev); |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 820 | init_completion(&xcopy_lun->lun_ref_comp); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 821 | INIT_LIST_HEAD(&xcopy_lun->lun_deve_list); |
| 822 | INIT_LIST_HEAD(&xcopy_lun->lun_dev_link); |
| 823 | mutex_init(&xcopy_lun->lun_tg_pt_md_mutex); |
| 824 | xcopy_lun->lun_tpg = &xcopy_pt_tpg; |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 825 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 826 | return dev; |
| 827 | } |
| 828 | |
| 829 | int target_configure_device(struct se_device *dev) |
| 830 | { |
| 831 | struct se_hba *hba = dev->se_hba; |
| 832 | int ret; |
| 833 | |
| 834 | if (dev->dev_flags & DF_CONFIGURED) { |
| 835 | pr_err("se_dev->se_dev_ptr already set for storage" |
| 836 | " object\n"); |
| 837 | return -EEXIST; |
| 838 | } |
| 839 | |
| 840 | ret = dev->transport->configure_device(dev); |
| 841 | if (ret) |
| 842 | goto out; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 843 | /* |
| 844 | * XXX: there is not much point to have two different values here.. |
| 845 | */ |
| 846 | dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size; |
| 847 | dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth; |
| 848 | |
| 849 | /* |
| 850 | * Align max_hw_sectors down to PAGE_SIZE I/O transfers |
| 851 | */ |
| 852 | dev->dev_attrib.hw_max_sectors = |
| 853 | se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, |
| 854 | dev->dev_attrib.hw_block_size); |
Nicholas Bellinger | 046ba64 | 2015-01-06 16:10:37 -0800 | [diff] [blame] | 855 | dev->dev_attrib.optimal_sectors = dev->dev_attrib.hw_max_sectors; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 856 | |
| 857 | dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX); |
| 858 | dev->creation_time = get_jiffies_64(); |
| 859 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 860 | ret = core_setup_alua(dev); |
| 861 | if (ret) |
| 862 | goto out; |
| 863 | |
| 864 | /* |
| 865 | * Startup the struct se_device processing thread |
| 866 | */ |
| 867 | dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, |
| 868 | dev->transport->name); |
| 869 | if (!dev->tmr_wq) { |
| 870 | pr_err("Unable to create tmr workqueue for %s\n", |
| 871 | dev->transport->name); |
| 872 | ret = -ENOMEM; |
| 873 | goto out_free_alua; |
| 874 | } |
| 875 | |
| 876 | /* |
| 877 | * Setup work_queue for QUEUE_FULL |
| 878 | */ |
| 879 | INIT_WORK(&dev->qf_work_queue, target_qf_do_work); |
| 880 | |
| 881 | /* |
| 882 | * Preload the initial INQUIRY const values if we are doing |
| 883 | * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI |
| 884 | * passthrough because this is being provided by the backend LLD. |
| 885 | */ |
Andy Grover | a354170 | 2015-05-19 14:44:41 -0700 | [diff] [blame] | 886 | if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 887 | strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); |
| 888 | strncpy(&dev->t10_wwn.model[0], |
| 889 | dev->transport->inquiry_prod, 16); |
| 890 | strncpy(&dev->t10_wwn.revision[0], |
| 891 | dev->transport->inquiry_rev, 4); |
| 892 | } |
| 893 | |
| 894 | scsi_dump_inquiry(dev); |
| 895 | |
| 896 | spin_lock(&hba->device_lock); |
| 897 | hba->dev_count++; |
| 898 | spin_unlock(&hba->device_lock); |
Nicholas Bellinger | d9ea32b | 2013-08-22 11:33:37 -0700 | [diff] [blame] | 899 | |
| 900 | mutex_lock(&g_device_mutex); |
| 901 | list_add_tail(&dev->g_dev_node, &g_device_list); |
| 902 | mutex_unlock(&g_device_mutex); |
| 903 | |
Nicholas Bellinger | 5f7da04 | 2015-03-05 03:28:24 +0000 | [diff] [blame] | 904 | dev->dev_flags |= DF_CONFIGURED; |
| 905 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 906 | return 0; |
| 907 | |
| 908 | out_free_alua: |
| 909 | core_alua_free_lu_gp_mem(dev); |
| 910 | out: |
| 911 | se_release_vpd_for_dev(dev); |
| 912 | return ret; |
| 913 | } |
| 914 | |
| 915 | void target_free_device(struct se_device *dev) |
| 916 | { |
| 917 | struct se_hba *hba = dev->se_hba; |
| 918 | |
| 919 | WARN_ON(!list_empty(&dev->dev_sep_list)); |
| 920 | |
| 921 | if (dev->dev_flags & DF_CONFIGURED) { |
| 922 | destroy_workqueue(dev->tmr_wq); |
| 923 | |
Nicholas Bellinger | d9ea32b | 2013-08-22 11:33:37 -0700 | [diff] [blame] | 924 | mutex_lock(&g_device_mutex); |
| 925 | list_del(&dev->g_dev_node); |
| 926 | mutex_unlock(&g_device_mutex); |
| 927 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 928 | spin_lock(&hba->device_lock); |
| 929 | hba->dev_count--; |
| 930 | spin_unlock(&hba->device_lock); |
| 931 | } |
| 932 | |
| 933 | core_alua_free_lu_gp_mem(dev); |
Hannes Reinecke | 229d4f1 | 2013-12-17 09:18:50 +0100 | [diff] [blame] | 934 | core_alua_set_lba_map(dev, NULL, 0, 0); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 935 | core_scsi3_free_all_registrations(dev); |
| 936 | se_release_vpd_for_dev(dev); |
| 937 | |
Nicholas Bellinger | 2ed22c9 | 2014-01-08 18:19:31 +0000 | [diff] [blame] | 938 | if (dev->transport->free_prot) |
| 939 | dev->transport->free_prot(dev); |
| 940 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 941 | dev->transport->free_device(dev); |
| 942 | } |
| 943 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 944 | int core_dev_setup_virtual_lun0(void) |
| 945 | { |
| 946 | struct se_hba *hba; |
| 947 | struct se_device *dev; |
Andy Grover | db5d1c3 | 2013-05-28 16:55:20 -0700 | [diff] [blame] | 948 | char buf[] = "rd_pages=8,rd_nullio=1"; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 949 | int ret; |
| 950 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 951 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 952 | if (IS_ERR(hba)) |
| 953 | return PTR_ERR(hba); |
| 954 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 955 | dev = target_alloc_device(hba, "virt_lun0"); |
| 956 | if (!dev) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 957 | ret = -ENOMEM; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 958 | goto out_free_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 959 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 960 | |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame] | 961 | hba->backend->ops->set_configfs_dev_params(dev, buf, sizeof(buf)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 962 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 963 | ret = target_configure_device(dev); |
| 964 | if (ret) |
| 965 | goto out_free_se_dev; |
| 966 | |
| 967 | lun0_hba = hba; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 968 | g_lun0_dev = dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 969 | return 0; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 970 | |
| 971 | out_free_se_dev: |
| 972 | target_free_device(dev); |
| 973 | out_free_hba: |
| 974 | core_delete_hba(hba); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 975 | return ret; |
| 976 | } |
| 977 | |
| 978 | |
| 979 | void core_dev_release_virtual_lun0(void) |
| 980 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 981 | struct se_hba *hba = lun0_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 982 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 983 | if (!hba) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 984 | return; |
| 985 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 986 | if (g_lun0_dev) |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 987 | target_free_device(g_lun0_dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 988 | core_delete_hba(hba); |
| 989 | } |
Andy Grover | 7bfea53b | 2015-05-19 14:44:40 -0700 | [diff] [blame] | 990 | |
| 991 | /* |
| 992 | * Common CDB parsing for kernel and user passthrough. |
| 993 | */ |
| 994 | sense_reason_t |
| 995 | passthrough_parse_cdb(struct se_cmd *cmd, |
| 996 | sense_reason_t (*exec_cmd)(struct se_cmd *cmd)) |
| 997 | { |
| 998 | unsigned char *cdb = cmd->t_task_cdb; |
| 999 | |
| 1000 | /* |
| 1001 | * Clear a lun set in the cdb if the initiator talking to use spoke |
| 1002 | * and old standards version, as we can't assume the underlying device |
| 1003 | * won't choke up on it. |
| 1004 | */ |
| 1005 | switch (cdb[0]) { |
| 1006 | case READ_10: /* SBC - RDProtect */ |
| 1007 | case READ_12: /* SBC - RDProtect */ |
| 1008 | case READ_16: /* SBC - RDProtect */ |
| 1009 | case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */ |
| 1010 | case VERIFY: /* SBC - VRProtect */ |
| 1011 | case VERIFY_16: /* SBC - VRProtect */ |
| 1012 | case WRITE_VERIFY: /* SBC - VRProtect */ |
| 1013 | case WRITE_VERIFY_12: /* SBC - VRProtect */ |
| 1014 | case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */ |
| 1015 | break; |
| 1016 | default: |
| 1017 | cdb[1] &= 0x1f; /* clear logical unit number */ |
| 1018 | break; |
| 1019 | } |
| 1020 | |
| 1021 | /* |
| 1022 | * For REPORT LUNS we always need to emulate the response, for everything |
| 1023 | * else, pass it up. |
| 1024 | */ |
| 1025 | if (cdb[0] == REPORT_LUNS) { |
| 1026 | cmd->execute_cmd = spc_emulate_report_luns; |
| 1027 | return TCM_NO_SENSE; |
| 1028 | } |
| 1029 | |
| 1030 | /* Set DATA_CDB flag for ops that should have it */ |
| 1031 | switch (cdb[0]) { |
| 1032 | case READ_6: |
| 1033 | case READ_10: |
| 1034 | case READ_12: |
| 1035 | case READ_16: |
| 1036 | case WRITE_6: |
| 1037 | case WRITE_10: |
| 1038 | case WRITE_12: |
| 1039 | case WRITE_16: |
| 1040 | case WRITE_VERIFY: |
| 1041 | case WRITE_VERIFY_12: |
| 1042 | case 0x8e: /* WRITE_VERIFY_16 */ |
| 1043 | case COMPARE_AND_WRITE: |
| 1044 | case XDWRITEREAD_10: |
| 1045 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; |
| 1046 | break; |
| 1047 | case VARIABLE_LENGTH_CMD: |
| 1048 | switch (get_unaligned_be16(&cdb[8])) { |
| 1049 | case READ_32: |
| 1050 | case WRITE_32: |
| 1051 | case 0x0c: /* WRITE_VERIFY_32 */ |
| 1052 | case XDWRITEREAD_32: |
| 1053 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; |
| 1054 | break; |
| 1055 | } |
| 1056 | } |
| 1057 | |
| 1058 | cmd->execute_cmd = exec_cmd; |
| 1059 | |
| 1060 | return TCM_NO_SENSE; |
| 1061 | } |
| 1062 | EXPORT_SYMBOL(passthrough_parse_cdb); |