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> |
| 39 | #include <scsi/scsi.h> |
Nicholas Bellinger | 1078da1 | 2011-05-19 20:19:13 -0700 | [diff] [blame] | 40 | #include <scsi/scsi_device.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 |
| 59 | transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 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 | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 65 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 66 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
| 67 | return TCM_NON_EXISTENT_LUN; |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -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) && |
| 75 | (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 76 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 77 | " Access for 0x%08x\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 78 | se_cmd->se_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 79 | unpacked_lun); |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 80 | rcu_read_unlock(); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 81 | return TCM_WRITE_PROTECTED; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 82 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 83 | |
| 84 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 85 | atomic_long_add(se_cmd->data_length, |
| 86 | &deve->write_bytes); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 87 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 88 | atomic_long_add(se_cmd->data_length, |
| 89 | &deve->read_bytes); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 90 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 91 | se_lun = rcu_dereference(deve->se_lun); |
| 92 | se_cmd->se_lun = rcu_dereference(deve->se_lun); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 93 | se_cmd->pr_res_key = deve->pr_res_key; |
| 94 | se_cmd->orig_fe_lun = unpacked_lun; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 95 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
Nicholas Bellinger | 5277797 | 2013-11-06 21:03:43 -0800 | [diff] [blame] | 96 | |
| 97 | percpu_ref_get(&se_lun->lun_ref); |
| 98 | se_cmd->lun_ref_active = true; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 99 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 100 | rcu_read_unlock(); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 101 | |
| 102 | if (!se_lun) { |
| 103 | /* |
| 104 | * Use the se_portal_group->tpg_virt_lun0 to allow for |
| 105 | * REPORT_LUNS, et al to be returned when no active |
| 106 | * MappedLUN=0 exists for this Initiator Port. |
| 107 | */ |
| 108 | if (unpacked_lun != 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 109 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 110 | " Access for 0x%08x\n", |
| 111 | se_cmd->se_tfo->get_fabric_name(), |
| 112 | unpacked_lun); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 113 | return TCM_NON_EXISTENT_LUN; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 114 | } |
| 115 | /* |
| 116 | * Force WRITE PROTECT for virtual LUN 0 |
| 117 | */ |
| 118 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 119 | (se_cmd->data_direction != DMA_NONE)) |
| 120 | return TCM_WRITE_PROTECTED; |
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 | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 129 | } |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame^] | 130 | /* |
| 131 | * RCU reference protected by percpu se_lun->lun_ref taken above that |
| 132 | * must drop to zero (including initial reference) before this se_lun |
| 133 | * pointer can be kfree_rcu() by the final se_lun->lun_group put via |
| 134 | * target_core_fabric_configfs.c:target_fabric_port_release |
| 135 | */ |
| 136 | se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev); |
| 137 | atomic_long_inc(&se_cmd->se_dev->num_cmds); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 138 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 139 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame^] | 140 | atomic_long_add(se_cmd->data_length, |
| 141 | &se_cmd->se_dev->write_bytes); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 142 | else if (se_cmd->data_direction == DMA_FROM_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->read_bytes); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 145 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 146 | return 0; |
| 147 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 148 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 149 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 150 | int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 151 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 152 | struct se_dev_entry *deve; |
| 153 | struct se_lun *se_lun = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 154 | struct se_session *se_sess = se_cmd->se_sess; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 155 | struct se_node_acl *nacl = se_sess->se_node_acl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 156 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 157 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 158 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 159 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 160 | return -ENODEV; |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -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" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 175 | " Access for 0x%08x\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 | |
| 200 | if (cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) |
| 201 | return true; |
| 202 | |
| 203 | rcu_read_lock(); |
| 204 | deve = target_nacl_find_deve(se_sess->se_node_acl, cmd->orig_fe_lun); |
| 205 | ret = (deve && deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY); |
| 206 | rcu_read_unlock(); |
| 207 | |
| 208 | return ret; |
| 209 | } |
| 210 | EXPORT_SYMBOL(target_lun_is_rdonly); |
| 211 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 212 | /* |
| 213 | * This function is called from core_scsi3_emulate_pro_register_and_move() |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 214 | * 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] | 215 | * when a matching rtpi is found. |
| 216 | */ |
| 217 | struct se_dev_entry *core_get_se_deve_from_rtpi( |
| 218 | struct se_node_acl *nacl, |
| 219 | u16 rtpi) |
| 220 | { |
| 221 | struct se_dev_entry *deve; |
| 222 | struct se_lun *lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 223 | struct se_portal_group *tpg = nacl->se_tpg; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 224 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 225 | rcu_read_lock(); |
| 226 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { |
| 227 | lun = rcu_dereference(deve->se_lun); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 228 | if (!lun) { |
| 229 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 230 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 231 | tpg->se_tpg_tfo->get_fabric_name()); |
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 | if (lun->lun_rtpi != rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 235 | continue; |
| 236 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 237 | kref_get(&deve->pr_kref); |
| 238 | rcu_read_unlock(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 239 | |
| 240 | return deve; |
| 241 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 242 | rcu_read_unlock(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 243 | |
| 244 | return NULL; |
| 245 | } |
| 246 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 247 | void core_free_device_list_for_node( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 248 | struct se_node_acl *nacl, |
| 249 | struct se_portal_group *tpg) |
| 250 | { |
| 251 | struct se_dev_entry *deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 252 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 253 | mutex_lock(&nacl->lun_entry_mutex); |
| 254 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { |
| 255 | struct se_lun *lun = rcu_dereference_check(deve->se_lun, |
| 256 | lockdep_is_held(&nacl->lun_entry_mutex)); |
| 257 | core_disable_device_list_for_node(lun, deve, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 258 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 259 | mutex_unlock(&nacl->lun_entry_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 260 | } |
| 261 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 262 | void core_update_device_list_access( |
| 263 | u32 mapped_lun, |
| 264 | u32 lun_access, |
| 265 | struct se_node_acl *nacl) |
| 266 | { |
| 267 | struct se_dev_entry *deve; |
| 268 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 269 | mutex_lock(&nacl->lun_entry_mutex); |
| 270 | deve = target_nacl_find_deve(nacl, mapped_lun); |
| 271 | if (deve) { |
| 272 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
| 273 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; |
| 274 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 275 | } else { |
| 276 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; |
| 277 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 278 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 279 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 280 | mutex_unlock(&nacl->lun_entry_mutex); |
| 281 | } |
| 282 | |
| 283 | /* |
| 284 | * Called with rcu_read_lock or nacl->device_list_lock held. |
| 285 | */ |
| 286 | struct se_dev_entry *target_nacl_find_deve(struct se_node_acl *nacl, u32 mapped_lun) |
| 287 | { |
| 288 | struct se_dev_entry *deve; |
| 289 | |
| 290 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) |
| 291 | if (deve->mapped_lun == mapped_lun) |
| 292 | return deve; |
| 293 | |
| 294 | return NULL; |
| 295 | } |
| 296 | EXPORT_SYMBOL(target_nacl_find_deve); |
| 297 | |
| 298 | void target_pr_kref_release(struct kref *kref) |
| 299 | { |
| 300 | struct se_dev_entry *deve = container_of(kref, struct se_dev_entry, |
| 301 | pr_kref); |
| 302 | complete(&deve->pr_comp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 303 | } |
| 304 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 305 | /* core_enable_device_list_for_node(): |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 306 | * |
| 307 | * |
| 308 | */ |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 309 | int core_enable_device_list_for_node( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 310 | struct se_lun *lun, |
| 311 | struct se_lun_acl *lun_acl, |
| 312 | u32 mapped_lun, |
| 313 | u32 lun_access, |
| 314 | struct se_node_acl *nacl, |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 315 | struct se_portal_group *tpg) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 316 | { |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 317 | struct se_dev_entry *orig, *new; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 318 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 319 | new = kzalloc(sizeof(*new), GFP_KERNEL); |
| 320 | if (!new) { |
| 321 | pr_err("Unable to allocate se_dev_entry memory\n"); |
| 322 | return -ENOMEM; |
| 323 | } |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 324 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 325 | atomic_set(&new->ua_count, 0); |
| 326 | spin_lock_init(&new->ua_lock); |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 327 | INIT_LIST_HEAD(&new->ua_list); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 328 | INIT_LIST_HEAD(&new->lun_link); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 329 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 330 | new->mapped_lun = mapped_lun; |
| 331 | kref_init(&new->pr_kref); |
| 332 | init_completion(&new->pr_comp); |
| 333 | |
| 334 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) |
| 335 | new->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 336 | else |
| 337 | new->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 338 | |
| 339 | new->creation_time = get_jiffies_64(); |
| 340 | new->attach_count++; |
| 341 | |
| 342 | mutex_lock(&nacl->lun_entry_mutex); |
| 343 | orig = target_nacl_find_deve(nacl, mapped_lun); |
| 344 | if (orig && orig->se_lun) { |
| 345 | struct se_lun *orig_lun = rcu_dereference_check(orig->se_lun, |
| 346 | lockdep_is_held(&nacl->lun_entry_mutex)); |
| 347 | |
| 348 | if (orig_lun != lun) { |
| 349 | pr_err("Existing orig->se_lun doesn't match new lun" |
| 350 | " for dynamic -> explicit NodeACL conversion:" |
| 351 | " %s\n", nacl->initiatorname); |
| 352 | mutex_unlock(&nacl->lun_entry_mutex); |
| 353 | kfree(new); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 354 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 355 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 356 | BUG_ON(orig->se_lun_acl != NULL); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 357 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 358 | rcu_assign_pointer(new->se_lun, lun); |
| 359 | rcu_assign_pointer(new->se_lun_acl, lun_acl); |
| 360 | hlist_del_rcu(&orig->link); |
| 361 | hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); |
| 362 | mutex_unlock(&nacl->lun_entry_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 363 | |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 364 | spin_lock_bh(&lun->lun_deve_lock); |
| 365 | list_del(&orig->lun_link); |
| 366 | list_add_tail(&new->lun_link, &lun->lun_deve_list); |
| 367 | spin_unlock_bh(&lun->lun_deve_lock); |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 368 | |
| 369 | kref_put(&orig->pr_kref, target_pr_kref_release); |
| 370 | wait_for_completion(&orig->pr_comp); |
| 371 | |
| 372 | kfree_rcu(orig, rcu_head); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 373 | return 0; |
| 374 | } |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [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_add_head_rcu(&new->link, &nacl->lun_entry_hlist); |
| 379 | mutex_unlock(&nacl->lun_entry_mutex); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 380 | |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 381 | spin_lock_bh(&lun->lun_deve_lock); |
| 382 | list_add_tail(&new->lun_link, &lun->lun_deve_list); |
| 383 | spin_unlock_bh(&lun->lun_deve_lock); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 384 | |
| 385 | return 0; |
| 386 | } |
| 387 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 388 | /* |
| 389 | * Called with se_node_acl->lun_entry_mutex held. |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 390 | */ |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 391 | void core_disable_device_list_for_node( |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 392 | struct se_lun *lun, |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 393 | struct se_dev_entry *orig, |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 394 | struct se_node_acl *nacl, |
| 395 | struct se_portal_group *tpg) |
| 396 | { |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 397 | /* |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame^] | 398 | * rcu_dereference_raw protected by se_lun->lun_group symlink |
| 399 | * reference to se_device->dev_group. |
| 400 | */ |
| 401 | struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev); |
| 402 | /* |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 403 | * If the MappedLUN entry is being disabled, the entry in |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 404 | * lun->lun_deve_list must be removed now before clearing the |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 405 | * struct se_dev_entry pointers below as logic in |
| 406 | * core_alua_do_transition_tg_pt() depends on these being present. |
| 407 | * |
| 408 | * deve->se_lun_acl will be NULL for demo-mode created LUNs |
| 409 | * that have not been explicitly converted to MappedLUNs -> |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 410 | * struct se_lun_acl, but we remove deve->lun_link from |
| 411 | * lun->lun_deve_list. This also means that active UAs and |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 412 | * NodeACL context specific PR metadata for demo-mode |
| 413 | * MappedLUN *deve will be released below.. |
| 414 | */ |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 415 | spin_lock_bh(&lun->lun_deve_lock); |
| 416 | list_del(&orig->lun_link); |
| 417 | spin_unlock_bh(&lun->lun_deve_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 418 | /* |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 419 | * Disable struct se_dev_entry LUN ACL mapping |
| 420 | */ |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 421 | core_scsi3_ua_release_all(orig); |
| 422 | |
| 423 | hlist_del_rcu(&orig->link); |
Nicholas Bellinger | 80bfdfa | 2015-03-25 01:02:57 -0700 | [diff] [blame] | 424 | clear_bit(DEF_PR_REG_ACTIVE, &orig->deve_flags); |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 425 | rcu_assign_pointer(orig->se_lun, NULL); |
| 426 | rcu_assign_pointer(orig->se_lun_acl, NULL); |
| 427 | orig->lun_flags = 0; |
| 428 | orig->creation_time = 0; |
| 429 | orig->attach_count--; |
| 430 | /* |
| 431 | * Before firing off RCU callback, wait for any in process SPEC_I_PT=1 |
| 432 | * or REGISTER_AND_MOVE PR operation to complete. |
| 433 | */ |
| 434 | kref_put(&orig->pr_kref, target_pr_kref_release); |
| 435 | wait_for_completion(&orig->pr_comp); |
| 436 | |
| 437 | kfree_rcu(orig, rcu_head); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 438 | |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame^] | 439 | core_scsi3_free_pr_reg_from_nacl(dev, nacl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 440 | } |
| 441 | |
| 442 | /* core_clear_lun_from_tpg(): |
| 443 | * |
| 444 | * |
| 445 | */ |
| 446 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) |
| 447 | { |
| 448 | struct se_node_acl *nacl; |
| 449 | struct se_dev_entry *deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 450 | |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 451 | mutex_lock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 452 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 453 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 454 | mutex_lock(&nacl->lun_entry_mutex); |
| 455 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { |
| 456 | struct se_lun *tmp_lun = rcu_dereference_check(deve->se_lun, |
| 457 | lockdep_is_held(&nacl->lun_entry_mutex)); |
| 458 | |
| 459 | if (lun != tmp_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 460 | continue; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 461 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 462 | core_disable_device_list_for_node(lun, deve, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 463 | } |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 464 | mutex_unlock(&nacl->lun_entry_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 465 | } |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 466 | mutex_unlock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 467 | } |
| 468 | |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 469 | int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 470 | { |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 471 | struct se_lun *tmp; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 472 | |
| 473 | spin_lock(&dev->se_port_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 474 | if (dev->export_count == 0x0000ffff) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 475 | pr_warn("Reached dev->dev_port_count ==" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 476 | " 0x0000ffff\n"); |
| 477 | spin_unlock(&dev->se_port_lock); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 478 | return -ENOSPC; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 479 | } |
| 480 | again: |
| 481 | /* |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 482 | * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 483 | * Here is the table from spc4r17 section 7.7.3.8. |
| 484 | * |
| 485 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field |
| 486 | * |
| 487 | * Code Description |
| 488 | * 0h Reserved |
| 489 | * 1h Relative port 1, historically known as port A |
| 490 | * 2h Relative port 2, historically known as port B |
| 491 | * 3h to FFFFh Relative port 3 through 65 535 |
| 492 | */ |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 493 | lun->lun_rtpi = dev->dev_rpti_counter++; |
| 494 | if (!lun->lun_rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 495 | goto again; |
| 496 | |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 497 | list_for_each_entry(tmp, &dev->dev_sep_list, lun_dev_link) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 498 | /* |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 499 | * Make sure RELATIVE TARGET PORT IDENTIFIER is unique |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 500 | * for 16-bit wrap.. |
| 501 | */ |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 502 | if (lun->lun_rtpi == tmp->lun_rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 503 | goto again; |
| 504 | } |
| 505 | spin_unlock(&dev->se_port_lock); |
| 506 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 507 | return 0; |
| 508 | } |
| 509 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 510 | static void se_release_vpd_for_dev(struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 511 | { |
| 512 | struct t10_vpd *vpd, *vpd_tmp; |
| 513 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 514 | spin_lock(&dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 515 | list_for_each_entry_safe(vpd, vpd_tmp, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 516 | &dev->t10_wwn.t10_vpd_list, vpd_list) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 517 | list_del(&vpd->vpd_list); |
| 518 | kfree(vpd); |
| 519 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 520 | spin_unlock(&dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 521 | } |
| 522 | |
Roland Dreier | c804537 | 2012-07-16 15:17:12 -0700 | [diff] [blame] | 523 | 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] | 524 | { |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 525 | u32 aligned_max_sectors; |
| 526 | u32 alignment; |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 527 | /* |
| 528 | * Limit max_sectors to a PAGE_SIZE aligned value for modern |
| 529 | * transport_allocate_data_tasks() operation. |
| 530 | */ |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 531 | alignment = max(1ul, PAGE_SIZE / block_size); |
| 532 | aligned_max_sectors = rounddown(max_sectors, alignment); |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 533 | |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 534 | if (max_sectors != aligned_max_sectors) |
| 535 | pr_info("Rounding down aligned max_sectors from %u to %u\n", |
| 536 | max_sectors, aligned_max_sectors); |
| 537 | |
| 538 | return aligned_max_sectors; |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 539 | } |
| 540 | |
Christophe Vu-Brugier | 9bc6548 | 2015-03-19 14:30:13 +0100 | [diff] [blame] | 541 | bool se_dev_check_wce(struct se_device *dev) |
| 542 | { |
| 543 | bool wce = false; |
| 544 | |
| 545 | if (dev->transport->get_write_cache) |
| 546 | wce = dev->transport->get_write_cache(dev); |
| 547 | else if (dev->dev_attrib.emulate_write_cache > 0) |
| 548 | wce = true; |
| 549 | |
| 550 | return wce; |
| 551 | } |
| 552 | |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 553 | int core_dev_add_lun( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 554 | struct se_portal_group *tpg, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 555 | struct se_device *dev, |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 556 | struct se_lun *lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 557 | { |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 558 | int rc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 559 | |
Andy Grover | d344f8a | 2013-11-26 12:07:54 -0800 | [diff] [blame] | 560 | rc = core_tpg_add_lun(tpg, lun, |
Nicholas Bellinger | 58d9261 | 2012-03-20 21:26:48 -0700 | [diff] [blame] | 561 | TRANSPORT_LUNFLAGS_READ_WRITE, dev); |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 562 | if (rc < 0) |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 563 | return rc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 564 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 565 | pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 566 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
Andy Grover | 2af7973 | 2013-11-26 11:55:22 -0800 | [diff] [blame] | 567 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Andy Grover | 2dca673 | 2012-07-12 17:34:55 -0700 | [diff] [blame] | 568 | tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 569 | /* |
| 570 | * Update LUN maps for dynamically added initiators when |
| 571 | * generate_node_acl is enabled. |
| 572 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 573 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 574 | struct se_node_acl *acl; |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 575 | |
| 576 | mutex_lock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 577 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 578 | if (acl->dynamic_node_acl && |
| 579 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || |
| 580 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { |
Nicholas Bellinger | df9766c | 2015-05-22 02:05:19 +0000 | [diff] [blame] | 581 | core_tpg_add_node_to_devs(acl, tpg, lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 582 | } |
| 583 | } |
Nicholas Bellinger | 403edd7 | 2015-03-08 22:33:47 +0000 | [diff] [blame] | 584 | mutex_unlock(&tpg->acl_node_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 585 | } |
| 586 | |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 587 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 588 | } |
| 589 | |
| 590 | /* core_dev_del_lun(): |
| 591 | * |
| 592 | * |
| 593 | */ |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 594 | void core_dev_del_lun( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 595 | struct se_portal_group *tpg, |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 596 | struct se_lun *lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 597 | { |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 598 | pr_debug("%s_TPG[%u]_LUN[%u] - Deactivating %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 599 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 600 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 601 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 602 | |
Andy Grover | cd9d7cb | 2014-06-30 16:39:44 -0700 | [diff] [blame] | 603 | core_tpg_remove_lun(tpg, lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 604 | } |
| 605 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 606 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( |
| 607 | struct se_portal_group *tpg, |
Nicholas Bellinger | fcf2948 | 2013-02-18 18:00:33 -0800 | [diff] [blame] | 608 | struct se_node_acl *nacl, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 609 | u32 mapped_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 610 | int *ret) |
| 611 | { |
| 612 | struct se_lun_acl *lacl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 613 | |
Nicholas Bellinger | fcf2948 | 2013-02-18 18:00:33 -0800 | [diff] [blame] | 614 | if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 615 | pr_err("%s InitiatorName exceeds maximum size.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 616 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 617 | *ret = -EOVERFLOW; |
| 618 | return NULL; |
| 619 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 620 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 621 | if (!lacl) { |
| 622 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 623 | *ret = -ENOMEM; |
| 624 | return NULL; |
| 625 | } |
| 626 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 627 | lacl->mapped_lun = mapped_lun; |
| 628 | lacl->se_lun_nacl = nacl; |
Nicholas Bellinger | fcf2948 | 2013-02-18 18:00:33 -0800 | [diff] [blame] | 629 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", |
| 630 | nacl->initiatorname); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 631 | |
| 632 | return lacl; |
| 633 | } |
| 634 | |
| 635 | int core_dev_add_initiator_node_lun_acl( |
| 636 | struct se_portal_group *tpg, |
| 637 | struct se_lun_acl *lacl, |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 638 | struct se_lun *lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 639 | u32 lun_access) |
| 640 | { |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 641 | struct se_node_acl *nacl = lacl->se_lun_nacl; |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame^] | 642 | /* |
| 643 | * rcu_dereference_raw protected by se_lun->lun_group symlink |
| 644 | * reference to se_device->dev_group. |
| 645 | */ |
| 646 | struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 647 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 648 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 649 | return -EINVAL; |
| 650 | |
| 651 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && |
| 652 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) |
| 653 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 654 | |
| 655 | lacl->se_lun = lun; |
| 656 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 657 | if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, |
| 658 | lun_access, nacl, tpg) < 0) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 659 | return -EINVAL; |
| 660 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 661 | pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 662 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | 6bb8261 | 2015-05-10 19:31:10 -0700 | [diff] [blame] | 663 | 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] | 664 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
| 665 | lacl->initiatorname); |
| 666 | /* |
| 667 | * Check to see if there are any existing persistent reservation APTPL |
| 668 | * pre-registrations that need to be enabled for this LUN ACL.. |
| 669 | */ |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame^] | 670 | core_scsi3_check_aptpl_registration(dev, tpg, lun, nacl, |
Nicholas Bellinger | e248056 | 2014-10-04 04:23:15 +0000 | [diff] [blame] | 671 | lacl->mapped_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 672 | return 0; |
| 673 | } |
| 674 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 675 | int core_dev_del_initiator_node_lun_acl( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 676 | struct se_lun *lun, |
| 677 | struct se_lun_acl *lacl) |
| 678 | { |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 679 | struct se_portal_group *tpg = lun->lun_tpg; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 680 | struct se_node_acl *nacl; |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 681 | struct se_dev_entry *deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 682 | |
| 683 | nacl = lacl->se_lun_nacl; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 684 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 685 | return -EINVAL; |
| 686 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 687 | mutex_lock(&nacl->lun_entry_mutex); |
| 688 | deve = target_nacl_find_deve(nacl, lacl->mapped_lun); |
| 689 | if (deve) |
| 690 | core_disable_device_list_for_node(lun, deve, nacl, tpg); |
| 691 | mutex_unlock(&nacl->lun_entry_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 692 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 693 | pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 694 | " InitiatorNode: %s Mapped LUN: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 695 | tpg->se_tpg_tfo->get_fabric_name(), |
| 696 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 697 | lacl->initiatorname, lacl->mapped_lun); |
| 698 | |
| 699 | return 0; |
| 700 | } |
| 701 | |
| 702 | void core_dev_free_initiator_node_lun_acl( |
| 703 | struct se_portal_group *tpg, |
| 704 | struct se_lun_acl *lacl) |
| 705 | { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 706 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 707 | " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 708 | tpg->se_tpg_tfo->tpg_get_tag(tpg), |
| 709 | tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 710 | lacl->initiatorname, lacl->mapped_lun); |
| 711 | |
| 712 | kfree(lacl); |
| 713 | } |
| 714 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 715 | static void scsi_dump_inquiry(struct se_device *dev) |
| 716 | { |
| 717 | struct t10_wwn *wwn = &dev->t10_wwn; |
| 718 | char buf[17]; |
| 719 | int i, device_type; |
| 720 | /* |
| 721 | * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer |
| 722 | */ |
| 723 | for (i = 0; i < 8; i++) |
| 724 | if (wwn->vendor[i] >= 0x20) |
| 725 | buf[i] = wwn->vendor[i]; |
| 726 | else |
| 727 | buf[i] = ' '; |
| 728 | buf[i] = '\0'; |
| 729 | pr_debug(" Vendor: %s\n", buf); |
| 730 | |
| 731 | for (i = 0; i < 16; i++) |
| 732 | if (wwn->model[i] >= 0x20) |
| 733 | buf[i] = wwn->model[i]; |
| 734 | else |
| 735 | buf[i] = ' '; |
| 736 | buf[i] = '\0'; |
| 737 | pr_debug(" Model: %s\n", buf); |
| 738 | |
| 739 | for (i = 0; i < 4; i++) |
| 740 | if (wwn->revision[i] >= 0x20) |
| 741 | buf[i] = wwn->revision[i]; |
| 742 | else |
| 743 | buf[i] = ' '; |
| 744 | buf[i] = '\0'; |
| 745 | pr_debug(" Revision: %s\n", buf); |
| 746 | |
| 747 | device_type = dev->transport->get_device_type(dev); |
| 748 | pr_debug(" Type: %s ", scsi_device_type(device_type)); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 749 | } |
| 750 | |
| 751 | struct se_device *target_alloc_device(struct se_hba *hba, const char *name) |
| 752 | { |
| 753 | struct se_device *dev; |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 754 | struct se_lun *xcopy_lun; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 755 | |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame] | 756 | dev = hba->backend->ops->alloc_device(hba, name); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 757 | if (!dev) |
| 758 | return NULL; |
| 759 | |
Nicholas Bellinger | 0ff8754 | 2012-12-04 23:43:57 -0800 | [diff] [blame] | 760 | dev->dev_link_magic = SE_DEV_LINK_MAGIC; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 761 | dev->se_hba = hba; |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame] | 762 | dev->transport = hba->backend->ops; |
Nicholas Bellinger | 2ed22c9 | 2014-01-08 18:19:31 +0000 | [diff] [blame] | 763 | dev->prot_length = sizeof(struct se_dif_v1_tuple); |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame^] | 764 | dev->hba_index = hba->hba_index; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 765 | |
| 766 | INIT_LIST_HEAD(&dev->dev_list); |
| 767 | INIT_LIST_HEAD(&dev->dev_sep_list); |
| 768 | INIT_LIST_HEAD(&dev->dev_tmr_list); |
| 769 | INIT_LIST_HEAD(&dev->delayed_cmd_list); |
| 770 | INIT_LIST_HEAD(&dev->state_list); |
| 771 | INIT_LIST_HEAD(&dev->qf_cmd_list); |
Nicholas Bellinger | d9ea32b | 2013-08-22 11:33:37 -0700 | [diff] [blame] | 772 | INIT_LIST_HEAD(&dev->g_dev_node); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 773 | spin_lock_init(&dev->execute_task_lock); |
| 774 | spin_lock_init(&dev->delayed_cmd_lock); |
| 775 | spin_lock_init(&dev->dev_reservation_lock); |
| 776 | spin_lock_init(&dev->se_port_lock); |
| 777 | spin_lock_init(&dev->se_tmr_lock); |
| 778 | spin_lock_init(&dev->qf_cmd_lock); |
Nicholas Bellinger | 68ff9b9 | 2013-08-19 15:20:28 -0700 | [diff] [blame] | 779 | sema_init(&dev->caw_sem, 1); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 780 | atomic_set(&dev->dev_ordered_id, 0); |
| 781 | INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list); |
| 782 | spin_lock_init(&dev->t10_wwn.t10_vpd_lock); |
| 783 | INIT_LIST_HEAD(&dev->t10_pr.registration_list); |
| 784 | INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list); |
| 785 | spin_lock_init(&dev->t10_pr.registration_lock); |
| 786 | spin_lock_init(&dev->t10_pr.aptpl_reg_lock); |
| 787 | INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list); |
| 788 | spin_lock_init(&dev->t10_alua.tg_pt_gps_lock); |
Hannes Reinecke | c66094b | 2013-12-17 09:18:49 +0100 | [diff] [blame] | 789 | INIT_LIST_HEAD(&dev->t10_alua.lba_map_list); |
| 790 | spin_lock_init(&dev->t10_alua.lba_map_lock); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 791 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 792 | dev->t10_wwn.t10_dev = dev; |
| 793 | dev->t10_alua.t10_dev = dev; |
| 794 | |
| 795 | dev->dev_attrib.da_dev = dev; |
Tregaron Bayly | adfa957 | 2013-01-31 15:30:24 -0700 | [diff] [blame] | 796 | dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS; |
Christoph Hellwig | 814e5b4 | 2015-04-20 15:00:30 +0200 | [diff] [blame] | 797 | dev->dev_attrib.emulate_dpo = 1; |
| 798 | dev->dev_attrib.emulate_fua_write = 1; |
| 799 | dev->dev_attrib.emulate_fua_read = 1; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 800 | dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; |
| 801 | dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; |
| 802 | dev->dev_attrib.emulate_tas = DA_EMULATE_TAS; |
| 803 | dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; |
| 804 | dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; |
Nicholas Bellinger | 0123a9e | 2013-08-20 14:24:09 -0700 | [diff] [blame] | 805 | dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; |
Nicholas Bellinger | d397a44 | 2013-08-22 14:17:20 -0700 | [diff] [blame] | 806 | dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; |
Nicholas Bellinger | 2ed22c9 | 2014-01-08 18:19:31 +0000 | [diff] [blame] | 807 | dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 808 | dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
Nicholas Bellinger | 92404e6 | 2014-10-04 01:06:08 +0000 | [diff] [blame] | 809 | dev->dev_attrib.force_pr_aptpl = DA_FORCE_PR_APTPL; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 810 | dev->dev_attrib.is_nonrot = DA_IS_NONROT; |
| 811 | dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; |
| 812 | dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; |
| 813 | dev->dev_attrib.max_unmap_block_desc_count = |
| 814 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; |
| 815 | dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; |
| 816 | dev->dev_attrib.unmap_granularity_alignment = |
| 817 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; |
Nicholas Bellinger | 773cbaf | 2012-11-15 11:02:49 -0800 | [diff] [blame] | 818 | dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 819 | |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 820 | xcopy_lun = &dev->xcopy_lun; |
Nicholas Bellinger | 4cc987e | 2015-05-19 00:03:07 -0700 | [diff] [blame^] | 821 | rcu_assign_pointer(xcopy_lun->lun_se_dev, dev); |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 822 | init_completion(&xcopy_lun->lun_ref_comp); |
Christoph Hellwig | adf653f | 2015-05-25 21:33:08 -0700 | [diff] [blame] | 823 | INIT_LIST_HEAD(&xcopy_lun->lun_deve_list); |
| 824 | INIT_LIST_HEAD(&xcopy_lun->lun_dev_link); |
| 825 | mutex_init(&xcopy_lun->lun_tg_pt_md_mutex); |
| 826 | xcopy_lun->lun_tpg = &xcopy_pt_tpg; |
Nicholas Bellinger | 4863e52 | 2013-11-08 13:10:44 -0800 | [diff] [blame] | 827 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 828 | return dev; |
| 829 | } |
| 830 | |
| 831 | int target_configure_device(struct se_device *dev) |
| 832 | { |
| 833 | struct se_hba *hba = dev->se_hba; |
| 834 | int ret; |
| 835 | |
| 836 | if (dev->dev_flags & DF_CONFIGURED) { |
| 837 | pr_err("se_dev->se_dev_ptr already set for storage" |
| 838 | " object\n"); |
| 839 | return -EEXIST; |
| 840 | } |
| 841 | |
| 842 | ret = dev->transport->configure_device(dev); |
| 843 | if (ret) |
| 844 | goto out; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 845 | /* |
| 846 | * XXX: there is not much point to have two different values here.. |
| 847 | */ |
| 848 | dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size; |
| 849 | dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth; |
| 850 | |
| 851 | /* |
| 852 | * Align max_hw_sectors down to PAGE_SIZE I/O transfers |
| 853 | */ |
| 854 | dev->dev_attrib.hw_max_sectors = |
| 855 | se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, |
| 856 | dev->dev_attrib.hw_block_size); |
Nicholas Bellinger | 046ba64 | 2015-01-06 16:10:37 -0800 | [diff] [blame] | 857 | dev->dev_attrib.optimal_sectors = dev->dev_attrib.hw_max_sectors; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 858 | |
| 859 | dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX); |
| 860 | dev->creation_time = get_jiffies_64(); |
| 861 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 862 | ret = core_setup_alua(dev); |
| 863 | if (ret) |
| 864 | goto out; |
| 865 | |
| 866 | /* |
| 867 | * Startup the struct se_device processing thread |
| 868 | */ |
| 869 | dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, |
| 870 | dev->transport->name); |
| 871 | if (!dev->tmr_wq) { |
| 872 | pr_err("Unable to create tmr workqueue for %s\n", |
| 873 | dev->transport->name); |
| 874 | ret = -ENOMEM; |
| 875 | goto out_free_alua; |
| 876 | } |
| 877 | |
| 878 | /* |
| 879 | * Setup work_queue for QUEUE_FULL |
| 880 | */ |
| 881 | INIT_WORK(&dev->qf_work_queue, target_qf_do_work); |
| 882 | |
| 883 | /* |
| 884 | * Preload the initial INQUIRY const values if we are doing |
| 885 | * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI |
| 886 | * passthrough because this is being provided by the backend LLD. |
| 887 | */ |
Andy Grover | a354170 | 2015-05-19 14:44:41 -0700 | [diff] [blame] | 888 | if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 889 | strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); |
| 890 | strncpy(&dev->t10_wwn.model[0], |
| 891 | dev->transport->inquiry_prod, 16); |
| 892 | strncpy(&dev->t10_wwn.revision[0], |
| 893 | dev->transport->inquiry_rev, 4); |
| 894 | } |
| 895 | |
| 896 | scsi_dump_inquiry(dev); |
| 897 | |
| 898 | spin_lock(&hba->device_lock); |
| 899 | hba->dev_count++; |
| 900 | spin_unlock(&hba->device_lock); |
Nicholas Bellinger | d9ea32b | 2013-08-22 11:33:37 -0700 | [diff] [blame] | 901 | |
| 902 | mutex_lock(&g_device_mutex); |
| 903 | list_add_tail(&dev->g_dev_node, &g_device_list); |
| 904 | mutex_unlock(&g_device_mutex); |
| 905 | |
Nicholas Bellinger | 5f7da04 | 2015-03-05 03:28:24 +0000 | [diff] [blame] | 906 | dev->dev_flags |= DF_CONFIGURED; |
| 907 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 908 | return 0; |
| 909 | |
| 910 | out_free_alua: |
| 911 | core_alua_free_lu_gp_mem(dev); |
| 912 | out: |
| 913 | se_release_vpd_for_dev(dev); |
| 914 | return ret; |
| 915 | } |
| 916 | |
| 917 | void target_free_device(struct se_device *dev) |
| 918 | { |
| 919 | struct se_hba *hba = dev->se_hba; |
| 920 | |
| 921 | WARN_ON(!list_empty(&dev->dev_sep_list)); |
| 922 | |
| 923 | if (dev->dev_flags & DF_CONFIGURED) { |
| 924 | destroy_workqueue(dev->tmr_wq); |
| 925 | |
Nicholas Bellinger | d9ea32b | 2013-08-22 11:33:37 -0700 | [diff] [blame] | 926 | mutex_lock(&g_device_mutex); |
| 927 | list_del(&dev->g_dev_node); |
| 928 | mutex_unlock(&g_device_mutex); |
| 929 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 930 | spin_lock(&hba->device_lock); |
| 931 | hba->dev_count--; |
| 932 | spin_unlock(&hba->device_lock); |
| 933 | } |
| 934 | |
| 935 | core_alua_free_lu_gp_mem(dev); |
Hannes Reinecke | 229d4f1 | 2013-12-17 09:18:50 +0100 | [diff] [blame] | 936 | core_alua_set_lba_map(dev, NULL, 0, 0); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 937 | core_scsi3_free_all_registrations(dev); |
| 938 | se_release_vpd_for_dev(dev); |
| 939 | |
Nicholas Bellinger | 2ed22c9 | 2014-01-08 18:19:31 +0000 | [diff] [blame] | 940 | if (dev->transport->free_prot) |
| 941 | dev->transport->free_prot(dev); |
| 942 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 943 | dev->transport->free_device(dev); |
| 944 | } |
| 945 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 946 | int core_dev_setup_virtual_lun0(void) |
| 947 | { |
| 948 | struct se_hba *hba; |
| 949 | struct se_device *dev; |
Andy Grover | db5d1c3 | 2013-05-28 16:55:20 -0700 | [diff] [blame] | 950 | char buf[] = "rd_pages=8,rd_nullio=1"; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 951 | int ret; |
| 952 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 953 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 954 | if (IS_ERR(hba)) |
| 955 | return PTR_ERR(hba); |
| 956 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 957 | dev = target_alloc_device(hba, "virt_lun0"); |
| 958 | if (!dev) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 959 | ret = -ENOMEM; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 960 | goto out_free_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 961 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 962 | |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame] | 963 | hba->backend->ops->set_configfs_dev_params(dev, buf, sizeof(buf)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 964 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 965 | ret = target_configure_device(dev); |
| 966 | if (ret) |
| 967 | goto out_free_se_dev; |
| 968 | |
| 969 | lun0_hba = hba; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 970 | g_lun0_dev = dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 971 | return 0; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 972 | |
| 973 | out_free_se_dev: |
| 974 | target_free_device(dev); |
| 975 | out_free_hba: |
| 976 | core_delete_hba(hba); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 977 | return ret; |
| 978 | } |
| 979 | |
| 980 | |
| 981 | void core_dev_release_virtual_lun0(void) |
| 982 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 983 | struct se_hba *hba = lun0_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 984 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 985 | if (!hba) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 986 | return; |
| 987 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 988 | if (g_lun0_dev) |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 989 | target_free_device(g_lun0_dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 990 | core_delete_hba(hba); |
| 991 | } |
Andy Grover | 7bfea53b | 2015-05-19 14:44:40 -0700 | [diff] [blame] | 992 | |
| 993 | /* |
| 994 | * Common CDB parsing for kernel and user passthrough. |
| 995 | */ |
| 996 | sense_reason_t |
| 997 | passthrough_parse_cdb(struct se_cmd *cmd, |
| 998 | sense_reason_t (*exec_cmd)(struct se_cmd *cmd)) |
| 999 | { |
| 1000 | unsigned char *cdb = cmd->t_task_cdb; |
| 1001 | |
| 1002 | /* |
| 1003 | * Clear a lun set in the cdb if the initiator talking to use spoke |
| 1004 | * and old standards version, as we can't assume the underlying device |
| 1005 | * won't choke up on it. |
| 1006 | */ |
| 1007 | switch (cdb[0]) { |
| 1008 | case READ_10: /* SBC - RDProtect */ |
| 1009 | case READ_12: /* SBC - RDProtect */ |
| 1010 | case READ_16: /* SBC - RDProtect */ |
| 1011 | case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */ |
| 1012 | case VERIFY: /* SBC - VRProtect */ |
| 1013 | case VERIFY_16: /* SBC - VRProtect */ |
| 1014 | case WRITE_VERIFY: /* SBC - VRProtect */ |
| 1015 | case WRITE_VERIFY_12: /* SBC - VRProtect */ |
| 1016 | case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */ |
| 1017 | break; |
| 1018 | default: |
| 1019 | cdb[1] &= 0x1f; /* clear logical unit number */ |
| 1020 | break; |
| 1021 | } |
| 1022 | |
| 1023 | /* |
| 1024 | * For REPORT LUNS we always need to emulate the response, for everything |
| 1025 | * else, pass it up. |
| 1026 | */ |
| 1027 | if (cdb[0] == REPORT_LUNS) { |
| 1028 | cmd->execute_cmd = spc_emulate_report_luns; |
| 1029 | return TCM_NO_SENSE; |
| 1030 | } |
| 1031 | |
| 1032 | /* Set DATA_CDB flag for ops that should have it */ |
| 1033 | switch (cdb[0]) { |
| 1034 | case READ_6: |
| 1035 | case READ_10: |
| 1036 | case READ_12: |
| 1037 | case READ_16: |
| 1038 | case WRITE_6: |
| 1039 | case WRITE_10: |
| 1040 | case WRITE_12: |
| 1041 | case WRITE_16: |
| 1042 | case WRITE_VERIFY: |
| 1043 | case WRITE_VERIFY_12: |
| 1044 | case 0x8e: /* WRITE_VERIFY_16 */ |
| 1045 | case COMPARE_AND_WRITE: |
| 1046 | case XDWRITEREAD_10: |
| 1047 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; |
| 1048 | break; |
| 1049 | case VARIABLE_LENGTH_CMD: |
| 1050 | switch (get_unaligned_be16(&cdb[8])) { |
| 1051 | case READ_32: |
| 1052 | case WRITE_32: |
| 1053 | case 0x0c: /* WRITE_VERIFY_32 */ |
| 1054 | case XDWRITEREAD_32: |
| 1055 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; |
| 1056 | break; |
| 1057 | } |
| 1058 | } |
| 1059 | |
| 1060 | cmd->execute_cmd = exec_cmd; |
| 1061 | |
| 1062 | return TCM_NO_SENSE; |
| 1063 | } |
| 1064 | EXPORT_SYMBOL(passthrough_parse_cdb); |