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> |
Bart Van Assche | 8dcf07b | 2016-11-14 15:47:14 -0800 | [diff] [blame] | 36 | #include <linux/t10-pi.h> |
Andy Grover | 7bfea53b | 2015-05-19 14:44:40 -0700 | [diff] [blame] | 37 | #include <asm/unaligned.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 38 | #include <net/sock.h> |
| 39 | #include <net/tcp.h> |
Bart Van Assche | ba92999 | 2015-05-08 10:11:12 +0200 | [diff] [blame] | 40 | #include <scsi/scsi_common.h> |
| 41 | #include <scsi/scsi_proto.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 42 | |
| 43 | #include <target/target_core_base.h> |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 44 | #include <target/target_core_backend.h> |
| 45 | #include <target/target_core_fabric.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 46 | |
Christoph Hellwig | e26d99a | 2011-11-14 12:30:30 -0500 | [diff] [blame] | 47 | #include "target_core_internal.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 48 | #include "target_core_alua.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 49 | #include "target_core_pr.h" |
| 50 | #include "target_core_ua.h" |
| 51 | |
Colin Ian King | c82ff23 | 2017-07-04 09:44:19 +0100 | [diff] [blame] | 52 | static DEFINE_MUTEX(device_mutex); |
| 53 | static LIST_HEAD(device_list); |
Mike Christie | 0a5eee6 | 2017-06-23 01:18:13 -0500 | [diff] [blame] | 54 | static DEFINE_IDR(devices_idr); |
Nicholas Bellinger | d9ea32b | 2013-08-22 11:33:37 -0700 | [diff] [blame] | 55 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 56 | static struct se_hba *lun0_hba; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 57 | /* not static, needed by tpg.c */ |
| 58 | struct se_device *g_lun0_dev; |
| 59 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 60 | sense_reason_t |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 61 | transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 62 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 63 | struct se_lun *se_lun = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 64 | struct se_session *se_sess = se_cmd->se_sess; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 65 | struct se_node_acl *nacl = se_sess->se_node_acl; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 66 | struct se_dev_entry *deve; |
Nicholas Bellinger | 8fa3a86 | 2015-09-16 20:23:53 -0700 | [diff] [blame] | 67 | sense_reason_t ret = TCM_NO_SENSE; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 68 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 69 | rcu_read_lock(); |
| 70 | deve = target_nacl_find_deve(nacl, unpacked_lun); |
| 71 | if (deve) { |
| 72 | atomic_long_inc(&deve->total_cmds); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 73 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 74 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 75 | atomic_long_add(se_cmd->data_length, |
| 76 | &deve->write_bytes); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 77 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 78 | atomic_long_add(se_cmd->data_length, |
| 79 | &deve->read_bytes); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 80 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 81 | se_lun = rcu_dereference(deve->se_lun); |
Nicholas Bellinger | bd4e2d2 | 2017-02-22 22:06:32 -0800 | [diff] [blame] | 82 | |
| 83 | if (!percpu_ref_tryget_live(&se_lun->lun_ref)) { |
| 84 | se_lun = NULL; |
| 85 | goto out_unlock; |
| 86 | } |
| 87 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 88 | se_cmd->se_lun = rcu_dereference(deve->se_lun); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 89 | se_cmd->pr_res_key = deve->pr_res_key; |
| 90 | se_cmd->orig_fe_lun = unpacked_lun; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 91 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
Nicholas Bellinger | 5277797 | 2013-11-06 21:03:43 -0800 | [diff] [blame] | 92 | se_cmd->lun_ref_active = true; |
Nicholas Bellinger | 8fa3a86 | 2015-09-16 20:23:53 -0700 | [diff] [blame] | 93 | |
| 94 | if ((se_cmd->data_direction == DMA_TO_DEVICE) && |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 95 | deve->lun_access_ro) { |
Nicholas Bellinger | 8fa3a86 | 2015-09-16 20:23:53 -0700 | [diff] [blame] | 96 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
| 97 | " Access for 0x%08llx\n", |
| 98 | se_cmd->se_tfo->get_fabric_name(), |
| 99 | unpacked_lun); |
| 100 | rcu_read_unlock(); |
| 101 | ret = TCM_WRITE_PROTECTED; |
| 102 | goto ref_dev; |
| 103 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 104 | } |
Nicholas Bellinger | bd4e2d2 | 2017-02-22 22:06:32 -0800 | [diff] [blame] | 105 | out_unlock: |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 106 | rcu_read_unlock(); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 107 | |
| 108 | if (!se_lun) { |
| 109 | /* |
| 110 | * Use the se_portal_group->tpg_virt_lun0 to allow for |
| 111 | * REPORT_LUNS, et al to be returned when no active |
| 112 | * MappedLUN=0 exists for this Initiator Port. |
| 113 | */ |
| 114 | if (unpacked_lun != 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 115 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 116 | " Access for 0x%08llx\n", |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 117 | se_cmd->se_tfo->get_fabric_name(), |
| 118 | unpacked_lun); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 119 | return TCM_NON_EXISTENT_LUN; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 120 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 121 | |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 122 | se_lun = se_sess->se_tpg->tpg_virt_lun0; |
| 123 | se_cmd->se_lun = se_sess->se_tpg->tpg_virt_lun0; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 124 | se_cmd->orig_fe_lun = 0; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 125 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
Nicholas Bellinger | 5277797 | 2013-11-06 21:03:43 -0800 | [diff] [blame] | 126 | |
| 127 | percpu_ref_get(&se_lun->lun_ref); |
| 128 | se_cmd->lun_ref_active = true; |
Nicholas Bellinger | 8fa3a86 | 2015-09-16 20:23:53 -0700 | [diff] [blame] | 129 | |
| 130 | /* |
| 131 | * Force WRITE PROTECT for virtual LUN 0 |
| 132 | */ |
| 133 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && |
| 134 | (se_cmd->data_direction != DMA_NONE)) { |
| 135 | ret = TCM_WRITE_PROTECTED; |
| 136 | goto ref_dev; |
| 137 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 138 | } |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 139 | /* |
| 140 | * RCU reference protected by percpu se_lun->lun_ref taken above that |
| 141 | * must drop to zero (including initial reference) before this se_lun |
| 142 | * pointer can be kfree_rcu() by the final se_lun->lun_group put via |
| 143 | * target_core_fabric_configfs.c:target_fabric_port_release |
| 144 | */ |
Nicholas Bellinger | 8fa3a86 | 2015-09-16 20:23:53 -0700 | [diff] [blame] | 145 | ref_dev: |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 146 | se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev); |
| 147 | atomic_long_inc(&se_cmd->se_dev->num_cmds); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 148 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 149 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 150 | atomic_long_add(se_cmd->data_length, |
| 151 | &se_cmd->se_dev->write_bytes); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 152 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 153 | atomic_long_add(se_cmd->data_length, |
| 154 | &se_cmd->se_dev->read_bytes); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 155 | |
Nicholas Bellinger | 8fa3a86 | 2015-09-16 20:23:53 -0700 | [diff] [blame] | 156 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 157 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 158 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 159 | |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 160 | 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] | 161 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 162 | struct se_dev_entry *deve; |
| 163 | struct se_lun *se_lun = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 164 | struct se_session *se_sess = se_cmd->se_sess; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 165 | struct se_node_acl *nacl = se_sess->se_node_acl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 166 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 167 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 168 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 169 | rcu_read_lock(); |
| 170 | deve = target_nacl_find_deve(nacl, unpacked_lun); |
| 171 | if (deve) { |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 172 | se_lun = rcu_dereference(deve->se_lun); |
Nicholas Bellinger | eeb64d2 | 2017-06-03 06:41:03 -0700 | [diff] [blame] | 173 | |
| 174 | if (!percpu_ref_tryget_live(&se_lun->lun_ref)) { |
| 175 | se_lun = NULL; |
| 176 | goto out_unlock; |
| 177 | } |
| 178 | |
| 179 | se_cmd->se_lun = rcu_dereference(deve->se_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 180 | se_cmd->pr_res_key = deve->pr_res_key; |
| 181 | se_cmd->orig_fe_lun = unpacked_lun; |
Nicholas Bellinger | eeb64d2 | 2017-06-03 06:41:03 -0700 | [diff] [blame] | 182 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
| 183 | se_cmd->lun_ref_active = true; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 184 | } |
Nicholas Bellinger | eeb64d2 | 2017-06-03 06:41:03 -0700 | [diff] [blame] | 185 | out_unlock: |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 186 | rcu_read_unlock(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 187 | |
| 188 | if (!se_lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 189 | pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 190 | " Access for 0x%08llx\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 191 | se_cmd->se_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 192 | unpacked_lun); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 193 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 194 | } |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 195 | se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev); |
| 196 | se_tmr->tmr_dev = rcu_dereference_raw(se_lun->lun_se_dev); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 197 | |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 198 | spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 199 | 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] | 200 | spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 201 | |
| 202 | return 0; |
| 203 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 204 | EXPORT_SYMBOL(transport_lookup_tmr_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 205 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 206 | bool target_lun_is_rdonly(struct se_cmd *cmd) |
| 207 | { |
| 208 | struct se_session *se_sess = cmd->se_sess; |
| 209 | struct se_dev_entry *deve; |
| 210 | bool ret; |
| 211 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 212 | rcu_read_lock(); |
| 213 | deve = target_nacl_find_deve(se_sess->se_node_acl, cmd->orig_fe_lun); |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 214 | ret = deve && deve->lun_access_ro; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 215 | rcu_read_unlock(); |
| 216 | |
| 217 | return ret; |
| 218 | } |
| 219 | EXPORT_SYMBOL(target_lun_is_rdonly); |
| 220 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 221 | /* |
| 222 | * This function is called from core_scsi3_emulate_pro_register_and_move() |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 223 | * 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] | 224 | * when a matching rtpi is found. |
| 225 | */ |
| 226 | struct se_dev_entry *core_get_se_deve_from_rtpi( |
| 227 | struct se_node_acl *nacl, |
| 228 | u16 rtpi) |
| 229 | { |
| 230 | struct se_dev_entry *deve; |
| 231 | struct se_lun *lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 232 | struct se_portal_group *tpg = nacl->se_tpg; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 233 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 234 | rcu_read_lock(); |
| 235 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { |
| 236 | lun = rcu_dereference(deve->se_lun); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 237 | if (!lun) { |
| 238 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 239 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 240 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 241 | continue; |
| 242 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 243 | if (lun->lun_rtpi != rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 244 | continue; |
| 245 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 246 | kref_get(&deve->pr_kref); |
| 247 | rcu_read_unlock(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 248 | |
| 249 | return deve; |
| 250 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 251 | rcu_read_unlock(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 252 | |
| 253 | return NULL; |
| 254 | } |
| 255 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 256 | void core_free_device_list_for_node( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 257 | struct se_node_acl *nacl, |
| 258 | struct se_portal_group *tpg) |
| 259 | { |
| 260 | struct se_dev_entry *deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 261 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 262 | mutex_lock(&nacl->lun_entry_mutex); |
| 263 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { |
| 264 | struct se_lun *lun = rcu_dereference_check(deve->se_lun, |
| 265 | lockdep_is_held(&nacl->lun_entry_mutex)); |
| 266 | core_disable_device_list_for_node(lun, deve, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 267 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 268 | mutex_unlock(&nacl->lun_entry_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 269 | } |
| 270 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 271 | void core_update_device_list_access( |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 272 | u64 mapped_lun, |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 273 | bool lun_access_ro, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 274 | struct se_node_acl *nacl) |
| 275 | { |
| 276 | struct se_dev_entry *deve; |
| 277 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 278 | mutex_lock(&nacl->lun_entry_mutex); |
| 279 | deve = target_nacl_find_deve(nacl, mapped_lun); |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 280 | if (deve) |
| 281 | deve->lun_access_ro = lun_access_ro; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 282 | mutex_unlock(&nacl->lun_entry_mutex); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 283 | } |
| 284 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 285 | /* |
| 286 | * Called with rcu_read_lock or nacl->device_list_lock held. |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 287 | */ |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 288 | 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] | 289 | { |
| 290 | struct se_dev_entry *deve; |
| 291 | |
| 292 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) |
| 293 | if (deve->mapped_lun == mapped_lun) |
| 294 | return deve; |
| 295 | |
| 296 | return NULL; |
| 297 | } |
| 298 | EXPORT_SYMBOL(target_nacl_find_deve); |
| 299 | |
| 300 | void target_pr_kref_release(struct kref *kref) |
| 301 | { |
| 302 | struct se_dev_entry *deve = container_of(kref, struct se_dev_entry, |
| 303 | pr_kref); |
| 304 | complete(&deve->pr_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 305 | } |
| 306 | |
Hannes Reinecke | 7c0d0d5 | 2015-06-11 10:01:29 +0200 | [diff] [blame] | 307 | static void |
| 308 | target_luns_data_has_changed(struct se_node_acl *nacl, struct se_dev_entry *new, |
| 309 | bool skip_new) |
| 310 | { |
| 311 | struct se_dev_entry *tmp; |
| 312 | |
| 313 | rcu_read_lock(); |
| 314 | hlist_for_each_entry_rcu(tmp, &nacl->lun_entry_hlist, link) { |
| 315 | if (skip_new && tmp == new) |
| 316 | continue; |
| 317 | core_scsi3_ua_allocate(tmp, 0x3F, |
| 318 | ASCQ_3FH_REPORTED_LUNS_DATA_HAS_CHANGED); |
| 319 | } |
| 320 | rcu_read_unlock(); |
| 321 | } |
| 322 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 323 | int core_enable_device_list_for_node( |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 324 | struct se_lun *lun, |
| 325 | struct se_lun_acl *lun_acl, |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 326 | u64 mapped_lun, |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 327 | bool lun_access_ro, |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 328 | struct se_node_acl *nacl, |
| 329 | struct se_portal_group *tpg) |
| 330 | { |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 331 | struct se_dev_entry *orig, *new; |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 332 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 333 | new = kzalloc(sizeof(*new), GFP_KERNEL); |
| 334 | if (!new) { |
| 335 | pr_err("Unable to allocate se_dev_entry memory\n"); |
| 336 | return -ENOMEM; |
| 337 | } |
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 | atomic_set(&new->ua_count, 0); |
| 340 | spin_lock_init(&new->ua_lock); |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 341 | INIT_LIST_HEAD(&new->ua_list); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 342 | INIT_LIST_HEAD(&new->lun_link); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 343 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 344 | new->mapped_lun = mapped_lun; |
| 345 | kref_init(&new->pr_kref); |
| 346 | init_completion(&new->pr_comp); |
| 347 | |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 348 | new->lun_access_ro = lun_access_ro; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 349 | new->creation_time = get_jiffies_64(); |
| 350 | new->attach_count++; |
| 351 | |
| 352 | mutex_lock(&nacl->lun_entry_mutex); |
| 353 | orig = target_nacl_find_deve(nacl, mapped_lun); |
| 354 | if (orig && orig->se_lun) { |
| 355 | struct se_lun *orig_lun = rcu_dereference_check(orig->se_lun, |
| 356 | lockdep_is_held(&nacl->lun_entry_mutex)); |
| 357 | |
| 358 | if (orig_lun != lun) { |
| 359 | pr_err("Existing orig->se_lun doesn't match new lun" |
| 360 | " for dynamic -> explicit NodeACL conversion:" |
| 361 | " %s\n", nacl->initiatorname); |
| 362 | mutex_unlock(&nacl->lun_entry_mutex); |
| 363 | kfree(new); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 364 | return -EINVAL; |
| 365 | } |
Nicholas Bellinger | 391e2a6 | 2016-10-23 14:28:15 -0700 | [diff] [blame] | 366 | if (orig->se_lun_acl != NULL) { |
| 367 | pr_warn_ratelimited("Detected existing explicit" |
| 368 | " se_lun_acl->se_lun_group reference for %s" |
| 369 | " mapped_lun: %llu, failing\n", |
| 370 | nacl->initiatorname, mapped_lun); |
| 371 | mutex_unlock(&nacl->lun_entry_mutex); |
| 372 | kfree(new); |
| 373 | return -EINVAL; |
| 374 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 375 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 376 | rcu_assign_pointer(new->se_lun, lun); |
| 377 | rcu_assign_pointer(new->se_lun_acl, lun_acl); |
| 378 | hlist_del_rcu(&orig->link); |
| 379 | hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); |
| 380 | mutex_unlock(&nacl->lun_entry_mutex); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 381 | |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 382 | spin_lock(&lun->lun_deve_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 383 | list_del(&orig->lun_link); |
| 384 | list_add_tail(&new->lun_link, &lun->lun_deve_list); |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 385 | spin_unlock(&lun->lun_deve_lock); |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 386 | |
| 387 | kref_put(&orig->pr_kref, target_pr_kref_release); |
| 388 | wait_for_completion(&orig->pr_comp); |
| 389 | |
Hannes Reinecke | 7c0d0d5 | 2015-06-11 10:01:29 +0200 | [diff] [blame] | 390 | target_luns_data_has_changed(nacl, new, true); |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 391 | kfree_rcu(orig, rcu_head); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 392 | return 0; |
| 393 | } |
| 394 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 395 | rcu_assign_pointer(new->se_lun, lun); |
| 396 | rcu_assign_pointer(new->se_lun_acl, lun_acl); |
| 397 | hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); |
| 398 | mutex_unlock(&nacl->lun_entry_mutex); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 399 | |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 400 | spin_lock(&lun->lun_deve_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 401 | list_add_tail(&new->lun_link, &lun->lun_deve_list); |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 402 | spin_unlock(&lun->lun_deve_lock); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 403 | |
Hannes Reinecke | 7c0d0d5 | 2015-06-11 10:01:29 +0200 | [diff] [blame] | 404 | target_luns_data_has_changed(nacl, new, true); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 405 | return 0; |
| 406 | } |
| 407 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 408 | /* |
| 409 | * Called with se_node_acl->lun_entry_mutex held. |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 410 | */ |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 411 | void core_disable_device_list_for_node( |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 412 | struct se_lun *lun, |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 413 | struct se_dev_entry *orig, |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 414 | struct se_node_acl *nacl, |
| 415 | struct se_portal_group *tpg) |
| 416 | { |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 417 | /* |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 418 | * rcu_dereference_raw protected by se_lun->lun_group symlink |
| 419 | * reference to se_device->dev_group. |
| 420 | */ |
| 421 | struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 422 | /* |
| 423 | * If the MappedLUN entry is being disabled, the entry in |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 424 | * lun->lun_deve_list must be removed now before clearing the |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 425 | * struct se_dev_entry pointers below as logic in |
| 426 | * core_alua_do_transition_tg_pt() depends on these being present. |
| 427 | * |
| 428 | * deve->se_lun_acl will be NULL for demo-mode created LUNs |
| 429 | * that have not been explicitly converted to MappedLUNs -> |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 430 | * struct se_lun_acl, but we remove deve->lun_link from |
| 431 | * lun->lun_deve_list. This also means that active UAs and |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 432 | * NodeACL context specific PR metadata for demo-mode |
| 433 | * MappedLUN *deve will be released below.. |
| 434 | */ |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 435 | spin_lock(&lun->lun_deve_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 436 | list_del(&orig->lun_link); |
Nicholas Bellinger | 1adff1b | 2015-06-22 23:44:05 -0700 | [diff] [blame] | 437 | spin_unlock(&lun->lun_deve_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 438 | /* |
| 439 | * Disable struct se_dev_entry LUN ACL mapping |
| 440 | */ |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 441 | core_scsi3_ua_release_all(orig); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 442 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 443 | hlist_del_rcu(&orig->link); |
Nicholas Bellinger | 80bfdfa | 2015-03-25 01:02:57 -0700 | [diff] [blame] | 444 | clear_bit(DEF_PR_REG_ACTIVE, &orig->deve_flags); |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 445 | orig->lun_access_ro = false; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 446 | orig->creation_time = 0; |
| 447 | orig->attach_count--; |
| 448 | /* |
| 449 | * Before firing off RCU callback, wait for any in process SPEC_I_PT=1 |
| 450 | * or REGISTER_AND_MOVE PR operation to complete. |
| 451 | */ |
| 452 | kref_put(&orig->pr_kref, target_pr_kref_release); |
| 453 | wait_for_completion(&orig->pr_comp); |
| 454 | |
Nicholas Bellinger | 3ccd6e8 | 2015-09-13 02:30:46 -0700 | [diff] [blame] | 455 | rcu_assign_pointer(orig->se_lun, NULL); |
| 456 | rcu_assign_pointer(orig->se_lun_acl, NULL); |
| 457 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 458 | kfree_rcu(orig, rcu_head); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 459 | |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 460 | core_scsi3_free_pr_reg_from_nacl(dev, nacl); |
Hannes Reinecke | 7c0d0d5 | 2015-06-11 10:01:29 +0200 | [diff] [blame] | 461 | target_luns_data_has_changed(nacl, NULL, false); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | /* core_clear_lun_from_tpg(): |
| 465 | * |
| 466 | * |
| 467 | */ |
| 468 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) |
| 469 | { |
| 470 | struct se_node_acl *nacl; |
| 471 | struct se_dev_entry *deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 472 | |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 473 | mutex_lock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 474 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 475 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 476 | mutex_lock(&nacl->lun_entry_mutex); |
| 477 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { |
| 478 | struct se_lun *tmp_lun = rcu_dereference_check(deve->se_lun, |
| 479 | lockdep_is_held(&nacl->lun_entry_mutex)); |
| 480 | |
| 481 | if (lun != tmp_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 482 | continue; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 483 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 484 | core_disable_device_list_for_node(lun, deve, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 485 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 486 | mutex_unlock(&nacl->lun_entry_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 487 | } |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 488 | mutex_unlock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 489 | } |
| 490 | |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 491 | int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 492 | { |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 493 | struct se_lun *tmp; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 494 | |
| 495 | spin_lock(&dev->se_port_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 496 | if (dev->export_count == 0x0000ffff) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 497 | pr_warn("Reached dev->dev_port_count ==" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 498 | " 0x0000ffff\n"); |
| 499 | spin_unlock(&dev->se_port_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 500 | return -ENOSPC; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 501 | } |
| 502 | again: |
| 503 | /* |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 504 | * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 505 | * Here is the table from spc4r17 section 7.7.3.8. |
| 506 | * |
| 507 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field |
| 508 | * |
| 509 | * Code Description |
| 510 | * 0h Reserved |
| 511 | * 1h Relative port 1, historically known as port A |
| 512 | * 2h Relative port 2, historically known as port B |
| 513 | * 3h to FFFFh Relative port 3 through 65 535 |
| 514 | */ |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 515 | lun->lun_rtpi = dev->dev_rpti_counter++; |
| 516 | if (!lun->lun_rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 517 | goto again; |
| 518 | |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 519 | list_for_each_entry(tmp, &dev->dev_sep_list, lun_dev_link) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 520 | /* |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 521 | * Make sure RELATIVE TARGET PORT IDENTIFIER is unique |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 522 | * for 16-bit wrap.. |
| 523 | */ |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 524 | if (lun->lun_rtpi == tmp->lun_rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 525 | goto again; |
| 526 | } |
| 527 | spin_unlock(&dev->se_port_lock); |
| 528 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 529 | return 0; |
| 530 | } |
| 531 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 532 | static void se_release_vpd_for_dev(struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 533 | { |
| 534 | struct t10_vpd *vpd, *vpd_tmp; |
| 535 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 536 | spin_lock(&dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 537 | list_for_each_entry_safe(vpd, vpd_tmp, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 538 | &dev->t10_wwn.t10_vpd_list, vpd_list) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 539 | list_del(&vpd->vpd_list); |
| 540 | kfree(vpd); |
| 541 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 542 | spin_unlock(&dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 543 | } |
| 544 | |
Roland Dreier | c804537 | 2012-07-16 15:17:12 -0700 | [diff] [blame] | 545 | 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] | 546 | { |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 547 | u32 aligned_max_sectors; |
| 548 | u32 alignment; |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 549 | /* |
| 550 | * Limit max_sectors to a PAGE_SIZE aligned value for modern |
| 551 | * transport_allocate_data_tasks() operation. |
| 552 | */ |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 553 | alignment = max(1ul, PAGE_SIZE / block_size); |
| 554 | aligned_max_sectors = rounddown(max_sectors, alignment); |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 555 | |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 556 | if (max_sectors != aligned_max_sectors) |
| 557 | pr_info("Rounding down aligned max_sectors from %u to %u\n", |
| 558 | max_sectors, aligned_max_sectors); |
| 559 | |
| 560 | return aligned_max_sectors; |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 561 | } |
| 562 | |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 563 | int core_dev_add_lun( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 564 | struct se_portal_group *tpg, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 565 | struct se_device *dev, |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 566 | struct se_lun *lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 567 | { |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 568 | int rc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 569 | |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 570 | rc = core_tpg_add_lun(tpg, lun, false, dev); |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 571 | if (rc < 0) |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 572 | return rc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 573 | |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 574 | pr_debug("%s_TPG[%u]_LUN[%llu] - Activated %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 575 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
Andy Grover | 2af7973 | 2013-11-26 11:55:22 -0800 | [diff] [blame] | 576 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Andy Grover | 2dca673 | 2012-07-12 17:34:55 -0700 | [diff] [blame] | 577 | tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 578 | /* |
| 579 | * Update LUN maps for dynamically added initiators when |
| 580 | * generate_node_acl is enabled. |
| 581 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 582 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 583 | struct se_node_acl *acl; |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 584 | |
| 585 | mutex_lock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 586 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 587 | if (acl->dynamic_node_acl && |
| 588 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || |
| 589 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { |
Nicholas Bellinger | df9766c | 2015-05-22 02:05:19 +0000 | [diff] [blame] | 590 | core_tpg_add_node_to_devs(acl, tpg, lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 591 | } |
| 592 | } |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 593 | mutex_unlock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 594 | } |
| 595 | |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 596 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 597 | } |
| 598 | |
| 599 | /* core_dev_del_lun(): |
| 600 | * |
| 601 | * |
| 602 | */ |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 603 | void core_dev_del_lun( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 604 | struct se_portal_group *tpg, |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 605 | struct se_lun *lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 606 | { |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 607 | pr_debug("%s_TPG[%u]_LUN[%llu] - Deactivating %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 608 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 609 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 610 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 611 | |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 612 | core_tpg_remove_lun(tpg, lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 613 | } |
| 614 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 615 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( |
| 616 | struct se_portal_group *tpg, |
Nicholas Bellinger | fcf2948 | 2013-02-18 18:00:33 -0800 | [diff] [blame] | 617 | struct se_node_acl *nacl, |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 618 | u64 mapped_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 619 | int *ret) |
| 620 | { |
| 621 | struct se_lun_acl *lacl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 622 | |
Nicholas Bellinger | fcf2948 | 2013-02-18 18:00:33 -0800 | [diff] [blame] | 623 | if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 624 | pr_err("%s InitiatorName exceeds maximum size.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 625 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 626 | *ret = -EOVERFLOW; |
| 627 | return NULL; |
| 628 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 629 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 630 | if (!lacl) { |
| 631 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 632 | *ret = -ENOMEM; |
| 633 | return NULL; |
| 634 | } |
| 635 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 636 | lacl->mapped_lun = mapped_lun; |
| 637 | lacl->se_lun_nacl = nacl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 638 | |
| 639 | return lacl; |
| 640 | } |
| 641 | |
| 642 | int core_dev_add_initiator_node_lun_acl( |
| 643 | struct se_portal_group *tpg, |
| 644 | struct se_lun_acl *lacl, |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 645 | struct se_lun *lun, |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 646 | bool lun_access_ro) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 647 | { |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 648 | struct se_node_acl *nacl = lacl->se_lun_nacl; |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 649 | /* |
| 650 | * rcu_dereference_raw protected by se_lun->lun_group symlink |
| 651 | * reference to se_device->dev_group. |
| 652 | */ |
| 653 | struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 654 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 655 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 656 | return -EINVAL; |
| 657 | |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 658 | if (lun->lun_access_ro) |
| 659 | lun_access_ro = true; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 660 | |
| 661 | lacl->se_lun = lun; |
| 662 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 663 | if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 664 | lun_access_ro, nacl, tpg) < 0) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 665 | return -EINVAL; |
| 666 | |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 667 | pr_debug("%s_TPG[%hu]_LUN[%llu->%llu] - Added %s ACL for " |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 668 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 669 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, lacl->mapped_lun, |
Andy Grover | 03a68b4 | 2016-02-25 15:14:32 -0800 | [diff] [blame] | 670 | lun_access_ro ? "RO" : "RW", |
Chris Zankel | b6a54b8 | 2015-07-20 16:29:50 -0700 | [diff] [blame] | 671 | nacl->initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 672 | /* |
| 673 | * Check to see if there are any existing persistent reservation APTPL |
| 674 | * pre-registrations that need to be enabled for this LUN ACL.. |
| 675 | */ |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 676 | core_scsi3_check_aptpl_registration(dev, tpg, lun, nacl, |
Nicholas Bellinger | e248056 | 2014-10-04 04:23:15 +0000 | [diff] [blame] | 677 | lacl->mapped_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 678 | return 0; |
| 679 | } |
| 680 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 681 | int core_dev_del_initiator_node_lun_acl( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 682 | struct se_lun *lun, |
| 683 | struct se_lun_acl *lacl) |
| 684 | { |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 685 | struct se_portal_group *tpg = lun->lun_tpg; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 686 | struct se_node_acl *nacl; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 687 | struct se_dev_entry *deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 688 | |
| 689 | nacl = lacl->se_lun_nacl; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 690 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 691 | return -EINVAL; |
| 692 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 693 | mutex_lock(&nacl->lun_entry_mutex); |
| 694 | deve = target_nacl_find_deve(nacl, lacl->mapped_lun); |
| 695 | if (deve) |
| 696 | core_disable_device_list_for_node(lun, deve, nacl, tpg); |
| 697 | mutex_unlock(&nacl->lun_entry_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 698 | |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 699 | pr_debug("%s_TPG[%hu]_LUN[%llu] - Removed ACL for" |
| 700 | " InitiatorNode: %s Mapped LUN: %llu\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 701 | tpg->se_tpg_tfo->get_fabric_name(), |
| 702 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Chris Zankel | b6a54b8 | 2015-07-20 16:29:50 -0700 | [diff] [blame] | 703 | nacl->initiatorname, lacl->mapped_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 704 | |
| 705 | return 0; |
| 706 | } |
| 707 | |
| 708 | void core_dev_free_initiator_node_lun_acl( |
| 709 | struct se_portal_group *tpg, |
| 710 | struct se_lun_acl *lacl) |
| 711 | { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 712 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
Hannes Reinecke | f2d3068 | 2015-06-10 08:41:22 +0200 | [diff] [blame] | 713 | " Mapped LUN: %llu\n", tpg->se_tpg_tfo->get_fabric_name(), |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 714 | tpg->se_tpg_tfo->tpg_get_tag(tpg), |
| 715 | tpg->se_tpg_tfo->get_fabric_name(), |
Chris Zankel | b6a54b8 | 2015-07-20 16:29:50 -0700 | [diff] [blame] | 716 | lacl->se_lun_nacl->initiatorname, lacl->mapped_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 717 | |
| 718 | kfree(lacl); |
| 719 | } |
| 720 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 721 | static void scsi_dump_inquiry(struct se_device *dev) |
| 722 | { |
| 723 | struct t10_wwn *wwn = &dev->t10_wwn; |
| 724 | char buf[17]; |
| 725 | int i, device_type; |
| 726 | /* |
| 727 | * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer |
| 728 | */ |
| 729 | for (i = 0; i < 8; i++) |
| 730 | if (wwn->vendor[i] >= 0x20) |
| 731 | buf[i] = wwn->vendor[i]; |
| 732 | else |
| 733 | buf[i] = ' '; |
| 734 | buf[i] = '\0'; |
| 735 | pr_debug(" Vendor: %s\n", buf); |
| 736 | |
| 737 | for (i = 0; i < 16; i++) |
| 738 | if (wwn->model[i] >= 0x20) |
| 739 | buf[i] = wwn->model[i]; |
| 740 | else |
| 741 | buf[i] = ' '; |
| 742 | buf[i] = '\0'; |
| 743 | pr_debug(" Model: %s\n", buf); |
| 744 | |
| 745 | for (i = 0; i < 4; i++) |
| 746 | if (wwn->revision[i] >= 0x20) |
| 747 | buf[i] = wwn->revision[i]; |
| 748 | else |
| 749 | buf[i] = ' '; |
| 750 | buf[i] = '\0'; |
| 751 | pr_debug(" Revision: %s\n", buf); |
| 752 | |
| 753 | device_type = dev->transport->get_device_type(dev); |
| 754 | pr_debug(" Type: %s ", scsi_device_type(device_type)); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 755 | } |
| 756 | |
| 757 | struct se_device *target_alloc_device(struct se_hba *hba, const char *name) |
| 758 | { |
| 759 | struct se_device *dev; |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 760 | struct se_lun *xcopy_lun; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 761 | |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame] | 762 | dev = hba->backend->ops->alloc_device(hba, name); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 763 | if (!dev) |
| 764 | return NULL; |
| 765 | |
| 766 | dev->se_hba = hba; |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame] | 767 | dev->transport = hba->backend->ops; |
Sagi Grimberg | fe052a1 | 2015-06-29 13:08:19 +0300 | [diff] [blame] | 768 | dev->prot_length = sizeof(struct t10_pi_tuple); |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 769 | dev->hba_index = hba->hba_index; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 770 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 771 | INIT_LIST_HEAD(&dev->dev_sep_list); |
| 772 | INIT_LIST_HEAD(&dev->dev_tmr_list); |
| 773 | INIT_LIST_HEAD(&dev->delayed_cmd_list); |
| 774 | INIT_LIST_HEAD(&dev->state_list); |
| 775 | INIT_LIST_HEAD(&dev->qf_cmd_list); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 776 | spin_lock_init(&dev->execute_task_lock); |
| 777 | spin_lock_init(&dev->delayed_cmd_lock); |
| 778 | spin_lock_init(&dev->dev_reservation_lock); |
| 779 | spin_lock_init(&dev->se_port_lock); |
| 780 | spin_lock_init(&dev->se_tmr_lock); |
| 781 | spin_lock_init(&dev->qf_cmd_lock); |
Nicholas Bellinger | 68ff9b9 | 2013-08-19 15:20:28 -0700 | [diff] [blame] | 782 | sema_init(&dev->caw_sem, 1); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 783 | INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list); |
| 784 | spin_lock_init(&dev->t10_wwn.t10_vpd_lock); |
| 785 | INIT_LIST_HEAD(&dev->t10_pr.registration_list); |
| 786 | INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list); |
| 787 | spin_lock_init(&dev->t10_pr.registration_lock); |
| 788 | spin_lock_init(&dev->t10_pr.aptpl_reg_lock); |
| 789 | INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list); |
| 790 | spin_lock_init(&dev->t10_alua.tg_pt_gps_lock); |
Hannes Reinecke | c66094b | 2013-12-17 09:18:49 +0100 | [diff] [blame] | 791 | INIT_LIST_HEAD(&dev->t10_alua.lba_map_list); |
| 792 | spin_lock_init(&dev->t10_alua.lba_map_lock); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 793 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 794 | dev->t10_wwn.t10_dev = dev; |
| 795 | dev->t10_alua.t10_dev = dev; |
| 796 | |
| 797 | dev->dev_attrib.da_dev = dev; |
Tregaron Bayly | adfa957 | 2013-01-31 15:30:24 -0700 | [diff] [blame] | 798 | dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS; |
Christoph Hellwig | 814e5b4 | 2015-04-20 15:00:30 +0200 | [diff] [blame] | 799 | dev->dev_attrib.emulate_dpo = 1; |
| 800 | dev->dev_attrib.emulate_fua_write = 1; |
| 801 | dev->dev_attrib.emulate_fua_read = 1; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 802 | dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; |
| 803 | dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; |
| 804 | dev->dev_attrib.emulate_tas = DA_EMULATE_TAS; |
| 805 | dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; |
| 806 | dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; |
Nicholas Bellinger | 0123a9e | 2013-08-20 14:24:09 -0700 | [diff] [blame] | 807 | dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; |
Nicholas Bellinger | d397a44 | 2013-08-22 14:17:20 -0700 | [diff] [blame] | 808 | dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; |
Nicholas Bellinger | 2ed22c9 | 2014-01-08 18:19:31 +0000 | [diff] [blame] | 809 | dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 810 | dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
Nicholas Bellinger | 92404e6 | 2014-10-04 01:06:08 +0000 | [diff] [blame] | 811 | dev->dev_attrib.force_pr_aptpl = DA_FORCE_PR_APTPL; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 812 | dev->dev_attrib.is_nonrot = DA_IS_NONROT; |
| 813 | dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; |
| 814 | dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; |
| 815 | dev->dev_attrib.max_unmap_block_desc_count = |
| 816 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; |
| 817 | dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; |
| 818 | dev->dev_attrib.unmap_granularity_alignment = |
| 819 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; |
Jamie Pocas | e6f41633 | 2015-11-29 14:44:57 -0800 | [diff] [blame] | 820 | dev->dev_attrib.unmap_zeroes_data = |
| 821 | DA_UNMAP_ZEROES_DATA_DEFAULT; |
Nicholas Bellinger | 773cbaf | 2012-11-15 11:02:49 -0800 | [diff] [blame] | 822 | dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 823 | |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 824 | xcopy_lun = &dev->xcopy_lun; |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame] | 825 | rcu_assign_pointer(xcopy_lun->lun_se_dev, dev); |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 826 | init_completion(&xcopy_lun->lun_ref_comp); |
Nicholas Bellinger | bd4e2d2 | 2017-02-22 22:06:32 -0800 | [diff] [blame] | 827 | init_completion(&xcopy_lun->lun_shutdown_comp); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 828 | INIT_LIST_HEAD(&xcopy_lun->lun_deve_list); |
| 829 | INIT_LIST_HEAD(&xcopy_lun->lun_dev_link); |
| 830 | mutex_init(&xcopy_lun->lun_tg_pt_md_mutex); |
| 831 | xcopy_lun->lun_tpg = &xcopy_pt_tpg; |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 832 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 833 | return dev; |
| 834 | } |
| 835 | |
Mike Christie | 8a9ebe7 | 2016-01-18 14:09:27 -0600 | [diff] [blame] | 836 | /* |
| 837 | * Check if the underlying struct block_device request_queue supports |
| 838 | * the QUEUE_FLAG_DISCARD bit for UNMAP/WRITE_SAME in SCSI + TRIM |
| 839 | * in ATA and we need to set TPE=1 |
| 840 | */ |
| 841 | bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib, |
Mike Christie | ea263c7 | 2016-06-02 20:12:37 -0500 | [diff] [blame] | 842 | struct request_queue *q) |
Mike Christie | 8a9ebe7 | 2016-01-18 14:09:27 -0600 | [diff] [blame] | 843 | { |
Mike Christie | ea263c7 | 2016-06-02 20:12:37 -0500 | [diff] [blame] | 844 | int block_size = queue_logical_block_size(q); |
| 845 | |
Mike Christie | 8a9ebe7 | 2016-01-18 14:09:27 -0600 | [diff] [blame] | 846 | if (!blk_queue_discard(q)) |
| 847 | return false; |
| 848 | |
Mike Christie | ea263c7 | 2016-06-02 20:12:37 -0500 | [diff] [blame] | 849 | attrib->max_unmap_lba_count = |
| 850 | q->limits.max_discard_sectors >> (ilog2(block_size) - 9); |
Mike Christie | 8a9ebe7 | 2016-01-18 14:09:27 -0600 | [diff] [blame] | 851 | /* |
| 852 | * Currently hardcoded to 1 in Linux/SCSI code.. |
| 853 | */ |
| 854 | attrib->max_unmap_block_desc_count = 1; |
| 855 | attrib->unmap_granularity = q->limits.discard_granularity / block_size; |
| 856 | attrib->unmap_granularity_alignment = q->limits.discard_alignment / |
| 857 | block_size; |
Nicholas Bellinger | 2237498 | 2017-04-11 22:21:47 -0700 | [diff] [blame] | 858 | attrib->unmap_zeroes_data = (q->limits.max_write_zeroes_sectors); |
Mike Christie | 8a9ebe7 | 2016-01-18 14:09:27 -0600 | [diff] [blame] | 859 | return true; |
| 860 | } |
| 861 | EXPORT_SYMBOL(target_configure_unmap_from_queue); |
| 862 | |
| 863 | /* |
| 864 | * Convert from blocksize advertised to the initiator to the 512 byte |
| 865 | * units unconditionally used by the Linux block layer. |
| 866 | */ |
| 867 | sector_t target_to_linux_sector(struct se_device *dev, sector_t lb) |
| 868 | { |
| 869 | switch (dev->dev_attrib.block_size) { |
| 870 | case 4096: |
| 871 | return lb << 3; |
| 872 | case 2048: |
| 873 | return lb << 2; |
| 874 | case 1024: |
| 875 | return lb << 1; |
| 876 | default: |
| 877 | return lb; |
| 878 | } |
| 879 | } |
| 880 | EXPORT_SYMBOL(target_to_linux_sector); |
| 881 | |
Mike Christie | 85441e6 | 2017-06-23 01:18:14 -0500 | [diff] [blame] | 882 | /** |
| 883 | * target_find_device - find a se_device by its dev_index |
| 884 | * @id: dev_index |
| 885 | * @do_depend: true if caller needs target_depend_item to be done |
| 886 | * |
| 887 | * If do_depend is true, the caller must do a target_undepend_item |
| 888 | * when finished using the device. |
| 889 | * |
| 890 | * If do_depend is false, the caller must be called in a configfs |
| 891 | * callback or during removal. |
| 892 | */ |
| 893 | struct se_device *target_find_device(int id, bool do_depend) |
| 894 | { |
| 895 | struct se_device *dev; |
| 896 | |
Mike Christie | be50f53 | 2017-06-23 01:18:18 -0500 | [diff] [blame] | 897 | mutex_lock(&device_mutex); |
Mike Christie | 85441e6 | 2017-06-23 01:18:14 -0500 | [diff] [blame] | 898 | dev = idr_find(&devices_idr, id); |
| 899 | if (dev && do_depend && target_depend_item(&dev->dev_group.cg_item)) |
| 900 | dev = NULL; |
Mike Christie | be50f53 | 2017-06-23 01:18:18 -0500 | [diff] [blame] | 901 | mutex_unlock(&device_mutex); |
Mike Christie | 85441e6 | 2017-06-23 01:18:14 -0500 | [diff] [blame] | 902 | return dev; |
| 903 | } |
| 904 | EXPORT_SYMBOL(target_find_device); |
| 905 | |
Mike Christie | b1943fd | 2017-06-23 01:18:16 -0500 | [diff] [blame] | 906 | struct devices_idr_iter { |
| 907 | int (*fn)(struct se_device *dev, void *data); |
| 908 | void *data; |
| 909 | }; |
| 910 | |
| 911 | static int target_devices_idr_iter(int id, void *p, void *data) |
| 912 | { |
| 913 | struct devices_idr_iter *iter = data; |
| 914 | struct se_device *dev = p; |
| 915 | |
| 916 | /* |
| 917 | * We add the device early to the idr, so it can be used |
| 918 | * by backend modules during configuration. We do not want |
| 919 | * to allow other callers to access partially setup devices, |
| 920 | * so we skip them here. |
| 921 | */ |
| 922 | if (!(dev->dev_flags & DF_CONFIGURED)) |
| 923 | return 0; |
| 924 | |
| 925 | return iter->fn(dev, iter->data); |
| 926 | } |
| 927 | |
| 928 | /** |
| 929 | * target_for_each_device - iterate over configured devices |
| 930 | * @fn: iterator function |
| 931 | * @data: pointer to data that will be passed to fn |
| 932 | * |
| 933 | * fn must return 0 to continue looping over devices. non-zero will break |
| 934 | * from the loop and return that value to the caller. |
| 935 | */ |
| 936 | int target_for_each_device(int (*fn)(struct se_device *dev, void *data), |
| 937 | void *data) |
| 938 | { |
| 939 | struct devices_idr_iter iter; |
| 940 | int ret; |
| 941 | |
| 942 | iter.fn = fn; |
| 943 | iter.data = data; |
| 944 | |
Mike Christie | be50f53 | 2017-06-23 01:18:18 -0500 | [diff] [blame] | 945 | mutex_lock(&device_mutex); |
Mike Christie | b1943fd | 2017-06-23 01:18:16 -0500 | [diff] [blame] | 946 | ret = idr_for_each(&devices_idr, target_devices_idr_iter, &iter); |
Mike Christie | be50f53 | 2017-06-23 01:18:18 -0500 | [diff] [blame] | 947 | mutex_unlock(&device_mutex); |
Mike Christie | b1943fd | 2017-06-23 01:18:16 -0500 | [diff] [blame] | 948 | return ret; |
| 949 | } |
| 950 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 951 | int target_configure_device(struct se_device *dev) |
| 952 | { |
| 953 | struct se_hba *hba = dev->se_hba; |
Mike Christie | 0a5eee6 | 2017-06-23 01:18:13 -0500 | [diff] [blame] | 954 | int ret, id; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 955 | |
| 956 | if (dev->dev_flags & DF_CONFIGURED) { |
| 957 | pr_err("se_dev->se_dev_ptr already set for storage" |
| 958 | " object\n"); |
| 959 | return -EEXIST; |
| 960 | } |
| 961 | |
Mike Christie | 0a5eee6 | 2017-06-23 01:18:13 -0500 | [diff] [blame] | 962 | /* |
| 963 | * Add early so modules like tcmu can use during its |
| 964 | * configuration. |
| 965 | */ |
Mike Christie | be50f53 | 2017-06-23 01:18:18 -0500 | [diff] [blame] | 966 | mutex_lock(&device_mutex); |
Mike Christie | 0a5eee6 | 2017-06-23 01:18:13 -0500 | [diff] [blame] | 967 | /* |
| 968 | * Use cyclic to try and avoid collisions with devices |
| 969 | * that were recently removed. |
| 970 | */ |
| 971 | id = idr_alloc_cyclic(&devices_idr, dev, 0, INT_MAX, GFP_KERNEL); |
Mike Christie | be50f53 | 2017-06-23 01:18:18 -0500 | [diff] [blame] | 972 | mutex_unlock(&device_mutex); |
Mike Christie | 0a5eee6 | 2017-06-23 01:18:13 -0500 | [diff] [blame] | 973 | if (id < 0) { |
| 974 | ret = -ENOMEM; |
| 975 | goto out; |
| 976 | } |
| 977 | dev->dev_index = id; |
| 978 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 979 | ret = dev->transport->configure_device(dev); |
| 980 | if (ret) |
Mike Christie | 0a5eee6 | 2017-06-23 01:18:13 -0500 | [diff] [blame] | 981 | goto out_free_index; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 982 | /* |
| 983 | * XXX: there is not much point to have two different values here.. |
| 984 | */ |
| 985 | dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size; |
| 986 | dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth; |
| 987 | |
| 988 | /* |
| 989 | * Align max_hw_sectors down to PAGE_SIZE I/O transfers |
| 990 | */ |
| 991 | dev->dev_attrib.hw_max_sectors = |
| 992 | se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, |
| 993 | dev->dev_attrib.hw_block_size); |
Nicholas Bellinger | 046ba64 | 2015-01-06 16:10:37 -0800 | [diff] [blame] | 994 | dev->dev_attrib.optimal_sectors = dev->dev_attrib.hw_max_sectors; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 995 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 996 | dev->creation_time = get_jiffies_64(); |
| 997 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 998 | ret = core_setup_alua(dev); |
| 999 | if (ret) |
Mike Christie | 0a5eee6 | 2017-06-23 01:18:13 -0500 | [diff] [blame] | 1000 | goto out_free_index; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1001 | |
| 1002 | /* |
| 1003 | * Startup the struct se_device processing thread |
| 1004 | */ |
| 1005 | dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, |
| 1006 | dev->transport->name); |
| 1007 | if (!dev->tmr_wq) { |
| 1008 | pr_err("Unable to create tmr workqueue for %s\n", |
| 1009 | dev->transport->name); |
| 1010 | ret = -ENOMEM; |
| 1011 | goto out_free_alua; |
| 1012 | } |
| 1013 | |
| 1014 | /* |
| 1015 | * Setup work_queue for QUEUE_FULL |
| 1016 | */ |
| 1017 | INIT_WORK(&dev->qf_work_queue, target_qf_do_work); |
| 1018 | |
| 1019 | /* |
| 1020 | * Preload the initial INQUIRY const values if we are doing |
| 1021 | * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI |
| 1022 | * passthrough because this is being provided by the backend LLD. |
| 1023 | */ |
Andy Grover | a354170 | 2015-05-19 14:44:41 -0700 | [diff] [blame] | 1024 | if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1025 | strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); |
| 1026 | strncpy(&dev->t10_wwn.model[0], |
| 1027 | dev->transport->inquiry_prod, 16); |
| 1028 | strncpy(&dev->t10_wwn.revision[0], |
| 1029 | dev->transport->inquiry_rev, 4); |
| 1030 | } |
| 1031 | |
| 1032 | scsi_dump_inquiry(dev); |
| 1033 | |
| 1034 | spin_lock(&hba->device_lock); |
| 1035 | hba->dev_count++; |
| 1036 | spin_unlock(&hba->device_lock); |
Nicholas Bellinger | d9ea32b | 2013-08-22 11:33:37 -0700 | [diff] [blame] | 1037 | |
Nicholas Bellinger | 5f7da04 | 2015-03-05 03:28:24 +0000 | [diff] [blame] | 1038 | dev->dev_flags |= DF_CONFIGURED; |
| 1039 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1040 | return 0; |
| 1041 | |
| 1042 | out_free_alua: |
| 1043 | core_alua_free_lu_gp_mem(dev); |
Mike Christie | 0a5eee6 | 2017-06-23 01:18:13 -0500 | [diff] [blame] | 1044 | out_free_index: |
Mike Christie | be50f53 | 2017-06-23 01:18:18 -0500 | [diff] [blame] | 1045 | mutex_lock(&device_mutex); |
Mike Christie | 0a5eee6 | 2017-06-23 01:18:13 -0500 | [diff] [blame] | 1046 | idr_remove(&devices_idr, dev->dev_index); |
Mike Christie | be50f53 | 2017-06-23 01:18:18 -0500 | [diff] [blame] | 1047 | mutex_unlock(&device_mutex); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1048 | out: |
| 1049 | se_release_vpd_for_dev(dev); |
| 1050 | return ret; |
| 1051 | } |
| 1052 | |
| 1053 | void target_free_device(struct se_device *dev) |
| 1054 | { |
| 1055 | struct se_hba *hba = dev->se_hba; |
| 1056 | |
| 1057 | WARN_ON(!list_empty(&dev->dev_sep_list)); |
| 1058 | |
| 1059 | if (dev->dev_flags & DF_CONFIGURED) { |
| 1060 | destroy_workqueue(dev->tmr_wq); |
| 1061 | |
Mike Christie | 9263470 | 2017-06-23 01:18:12 -0500 | [diff] [blame] | 1062 | dev->transport->destroy_device(dev); |
| 1063 | |
Mike Christie | be50f53 | 2017-06-23 01:18:18 -0500 | [diff] [blame] | 1064 | mutex_lock(&device_mutex); |
Mike Christie | 0a5eee6 | 2017-06-23 01:18:13 -0500 | [diff] [blame] | 1065 | idr_remove(&devices_idr, dev->dev_index); |
Mike Christie | be50f53 | 2017-06-23 01:18:18 -0500 | [diff] [blame] | 1066 | mutex_unlock(&device_mutex); |
Nicholas Bellinger | d9ea32b | 2013-08-22 11:33:37 -0700 | [diff] [blame] | 1067 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1068 | spin_lock(&hba->device_lock); |
| 1069 | hba->dev_count--; |
| 1070 | spin_unlock(&hba->device_lock); |
| 1071 | } |
| 1072 | |
| 1073 | core_alua_free_lu_gp_mem(dev); |
Hannes Reinecke | 229d4f1 | 2013-12-17 09:18:50 +0100 | [diff] [blame] | 1074 | core_alua_set_lba_map(dev, NULL, 0, 0); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1075 | core_scsi3_free_all_registrations(dev); |
| 1076 | se_release_vpd_for_dev(dev); |
| 1077 | |
Nicholas Bellinger | 2ed22c9 | 2014-01-08 18:19:31 +0000 | [diff] [blame] | 1078 | if (dev->transport->free_prot) |
| 1079 | dev->transport->free_prot(dev); |
| 1080 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1081 | dev->transport->free_device(dev); |
| 1082 | } |
| 1083 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1084 | int core_dev_setup_virtual_lun0(void) |
| 1085 | { |
| 1086 | struct se_hba *hba; |
| 1087 | struct se_device *dev; |
Andy Grover | db5d1c3 | 2013-05-28 16:55:20 -0700 | [diff] [blame] | 1088 | char buf[] = "rd_pages=8,rd_nullio=1"; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1089 | int ret; |
| 1090 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1091 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1092 | if (IS_ERR(hba)) |
| 1093 | return PTR_ERR(hba); |
| 1094 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1095 | dev = target_alloc_device(hba, "virt_lun0"); |
| 1096 | if (!dev) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1097 | ret = -ENOMEM; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1098 | goto out_free_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1099 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1100 | |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame] | 1101 | hba->backend->ops->set_configfs_dev_params(dev, buf, sizeof(buf)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1102 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1103 | ret = target_configure_device(dev); |
| 1104 | if (ret) |
| 1105 | goto out_free_se_dev; |
| 1106 | |
| 1107 | lun0_hba = hba; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1108 | g_lun0_dev = dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1109 | return 0; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1110 | |
| 1111 | out_free_se_dev: |
| 1112 | target_free_device(dev); |
| 1113 | out_free_hba: |
| 1114 | core_delete_hba(hba); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1115 | return ret; |
| 1116 | } |
| 1117 | |
| 1118 | |
| 1119 | void core_dev_release_virtual_lun0(void) |
| 1120 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1121 | struct se_hba *hba = lun0_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1122 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1123 | if (!hba) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1124 | return; |
| 1125 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1126 | if (g_lun0_dev) |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1127 | target_free_device(g_lun0_dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1128 | core_delete_hba(hba); |
| 1129 | } |
Andy Grover | 7bfea53b | 2015-05-19 14:44:40 -0700 | [diff] [blame] | 1130 | |
| 1131 | /* |
| 1132 | * Common CDB parsing for kernel and user passthrough. |
| 1133 | */ |
| 1134 | sense_reason_t |
| 1135 | passthrough_parse_cdb(struct se_cmd *cmd, |
| 1136 | sense_reason_t (*exec_cmd)(struct se_cmd *cmd)) |
| 1137 | { |
| 1138 | unsigned char *cdb = cmd->t_task_cdb; |
Bryant G. Ly | 4ec5bf0 | 2017-04-21 20:40:50 -0500 | [diff] [blame] | 1139 | struct se_device *dev = cmd->se_dev; |
| 1140 | unsigned int size; |
Andy Grover | 7bfea53b | 2015-05-19 14:44:40 -0700 | [diff] [blame] | 1141 | |
| 1142 | /* |
| 1143 | * Clear a lun set in the cdb if the initiator talking to use spoke |
| 1144 | * and old standards version, as we can't assume the underlying device |
| 1145 | * won't choke up on it. |
| 1146 | */ |
| 1147 | switch (cdb[0]) { |
| 1148 | case READ_10: /* SBC - RDProtect */ |
| 1149 | case READ_12: /* SBC - RDProtect */ |
| 1150 | case READ_16: /* SBC - RDProtect */ |
| 1151 | case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */ |
| 1152 | case VERIFY: /* SBC - VRProtect */ |
| 1153 | case VERIFY_16: /* SBC - VRProtect */ |
| 1154 | case WRITE_VERIFY: /* SBC - VRProtect */ |
| 1155 | case WRITE_VERIFY_12: /* SBC - VRProtect */ |
| 1156 | case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */ |
| 1157 | break; |
| 1158 | default: |
| 1159 | cdb[1] &= 0x1f; /* clear logical unit number */ |
| 1160 | break; |
| 1161 | } |
| 1162 | |
| 1163 | /* |
| 1164 | * For REPORT LUNS we always need to emulate the response, for everything |
| 1165 | * else, pass it up. |
| 1166 | */ |
| 1167 | if (cdb[0] == REPORT_LUNS) { |
| 1168 | cmd->execute_cmd = spc_emulate_report_luns; |
| 1169 | return TCM_NO_SENSE; |
| 1170 | } |
| 1171 | |
Bryant G. Ly | 4ec5bf0 | 2017-04-21 20:40:50 -0500 | [diff] [blame] | 1172 | /* |
| 1173 | * For PERSISTENT RESERVE IN/OUT, RELEASE, and RESERVE we need to |
| 1174 | * emulate the response, since tcmu does not have the information |
| 1175 | * required to process these commands. |
| 1176 | */ |
| 1177 | if (!(dev->transport->transport_flags & |
| 1178 | TRANSPORT_FLAG_PASSTHROUGH_PGR)) { |
| 1179 | if (cdb[0] == PERSISTENT_RESERVE_IN) { |
| 1180 | cmd->execute_cmd = target_scsi3_emulate_pr_in; |
Bart Van Assche | a85d667 | 2017-05-23 16:48:27 -0700 | [diff] [blame] | 1181 | size = get_unaligned_be16(&cdb[7]); |
Bryant G. Ly | 4ec5bf0 | 2017-04-21 20:40:50 -0500 | [diff] [blame] | 1182 | return target_cmd_size_check(cmd, size); |
| 1183 | } |
| 1184 | if (cdb[0] == PERSISTENT_RESERVE_OUT) { |
| 1185 | cmd->execute_cmd = target_scsi3_emulate_pr_out; |
Tang Wenji | 388fe69 | 2017-07-08 11:15:44 +0800 | [diff] [blame] | 1186 | size = get_unaligned_be32(&cdb[5]); |
Bryant G. Ly | 4ec5bf0 | 2017-04-21 20:40:50 -0500 | [diff] [blame] | 1187 | return target_cmd_size_check(cmd, size); |
| 1188 | } |
| 1189 | |
| 1190 | if (cdb[0] == RELEASE || cdb[0] == RELEASE_10) { |
| 1191 | cmd->execute_cmd = target_scsi2_reservation_release; |
| 1192 | if (cdb[0] == RELEASE_10) |
Bart Van Assche | a85d667 | 2017-05-23 16:48:27 -0700 | [diff] [blame] | 1193 | size = get_unaligned_be16(&cdb[7]); |
Bryant G. Ly | 4ec5bf0 | 2017-04-21 20:40:50 -0500 | [diff] [blame] | 1194 | else |
| 1195 | size = cmd->data_length; |
| 1196 | return target_cmd_size_check(cmd, size); |
| 1197 | } |
| 1198 | if (cdb[0] == RESERVE || cdb[0] == RESERVE_10) { |
| 1199 | cmd->execute_cmd = target_scsi2_reservation_reserve; |
| 1200 | if (cdb[0] == RESERVE_10) |
Bart Van Assche | a85d667 | 2017-05-23 16:48:27 -0700 | [diff] [blame] | 1201 | size = get_unaligned_be16(&cdb[7]); |
Bryant G. Ly | 4ec5bf0 | 2017-04-21 20:40:50 -0500 | [diff] [blame] | 1202 | else |
| 1203 | size = cmd->data_length; |
| 1204 | return target_cmd_size_check(cmd, size); |
| 1205 | } |
| 1206 | } |
| 1207 | |
Andy Grover | 7bfea53b | 2015-05-19 14:44:40 -0700 | [diff] [blame] | 1208 | /* Set DATA_CDB flag for ops that should have it */ |
| 1209 | switch (cdb[0]) { |
| 1210 | case READ_6: |
| 1211 | case READ_10: |
| 1212 | case READ_12: |
| 1213 | case READ_16: |
| 1214 | case WRITE_6: |
| 1215 | case WRITE_10: |
| 1216 | case WRITE_12: |
| 1217 | case WRITE_16: |
| 1218 | case WRITE_VERIFY: |
| 1219 | case WRITE_VERIFY_12: |
Bart Van Assche | 3e182db | 2017-05-23 16:48:22 -0700 | [diff] [blame] | 1220 | case WRITE_VERIFY_16: |
Andy Grover | 7bfea53b | 2015-05-19 14:44:40 -0700 | [diff] [blame] | 1221 | case COMPARE_AND_WRITE: |
| 1222 | case XDWRITEREAD_10: |
| 1223 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; |
| 1224 | break; |
| 1225 | case VARIABLE_LENGTH_CMD: |
| 1226 | switch (get_unaligned_be16(&cdb[8])) { |
| 1227 | case READ_32: |
| 1228 | case WRITE_32: |
Damien Le Moal | e5dc9a7 | 2017-06-28 14:58:56 +0900 | [diff] [blame] | 1229 | case WRITE_VERIFY_32: |
Andy Grover | 7bfea53b | 2015-05-19 14:44:40 -0700 | [diff] [blame] | 1230 | case XDWRITEREAD_32: |
| 1231 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; |
| 1232 | break; |
| 1233 | } |
| 1234 | } |
| 1235 | |
| 1236 | cmd->execute_cmd = exec_cmd; |
| 1237 | |
| 1238 | return TCM_NO_SENSE; |
| 1239 | } |
| 1240 | EXPORT_SYMBOL(passthrough_parse_cdb); |