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 | * |
| 7 | * Copyright (c) 2003, 2004, 2005 PyX Technologies, Inc. |
| 8 | * Copyright (c) 2005-2006 SBE, Inc. All Rights Reserved. |
| 9 | * Copyright (c) 2007-2010 Rising Tide Systems |
| 10 | * Copyright (c) 2008-2010 Linux-iSCSI.org |
| 11 | * |
| 12 | * Nicholas A. Bellinger <nab@kernel.org> |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2 of the License, or |
| 17 | * (at your option) any later version. |
| 18 | * |
| 19 | * This program is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with this program; if not, write to the Free Software |
| 26 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 27 | * |
| 28 | ******************************************************************************/ |
| 29 | |
| 30 | #include <linux/net.h> |
| 31 | #include <linux/string.h> |
| 32 | #include <linux/delay.h> |
| 33 | #include <linux/timer.h> |
| 34 | #include <linux/slab.h> |
| 35 | #include <linux/spinlock.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 36 | #include <linux/kthread.h> |
| 37 | #include <linux/in.h> |
| 38 | #include <net/sock.h> |
| 39 | #include <net/tcp.h> |
| 40 | #include <scsi/scsi.h> |
Nicholas Bellinger | 1078da1 | 2011-05-19 20:19:13 -0700 | [diff] [blame] | 41 | #include <scsi/scsi_device.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 42 | |
| 43 | #include <target/target_core_base.h> |
| 44 | #include <target/target_core_device.h> |
| 45 | #include <target/target_core_tpg.h> |
| 46 | #include <target/target_core_transport.h> |
| 47 | #include <target/target_core_fabric_ops.h> |
| 48 | |
| 49 | #include "target_core_alua.h" |
| 50 | #include "target_core_hba.h" |
| 51 | #include "target_core_pr.h" |
| 52 | #include "target_core_ua.h" |
| 53 | |
| 54 | static void se_dev_start(struct se_device *dev); |
| 55 | static void se_dev_stop(struct se_device *dev); |
| 56 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 57 | static struct se_hba *lun0_hba; |
| 58 | static struct se_subsystem_dev *lun0_su_dev; |
| 59 | /* not static, needed by tpg.c */ |
| 60 | struct se_device *g_lun0_dev; |
| 61 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 62 | int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 63 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 64 | struct se_lun *se_lun = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 65 | struct se_session *se_sess = se_cmd->se_sess; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 66 | struct se_device *dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 67 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 68 | |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -0800 | [diff] [blame] | 69 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { |
| 70 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; |
| 71 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 72 | return -ENODEV; |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -0800 | [diff] [blame] | 73 | } |
| 74 | |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 75 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 76 | se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun]; |
| 77 | if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
| 78 | struct se_dev_entry *deve = se_cmd->se_deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 79 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 80 | deve->total_cmds++; |
| 81 | deve->total_bytes += se_cmd->data_length; |
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 | if ((se_cmd->data_direction == DMA_TO_DEVICE) && |
| 84 | (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 85 | se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; |
| 86 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 87 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 88 | " Access for 0x%08x\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 89 | se_cmd->se_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 90 | unpacked_lun); |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 91 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 92 | return -EACCES; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 93 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 94 | |
| 95 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
| 96 | deve->write_bytes += se_cmd->data_length; |
| 97 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
| 98 | deve->read_bytes += se_cmd->data_length; |
| 99 | |
| 100 | deve->deve_cmds++; |
| 101 | |
| 102 | se_lun = deve->se_lun; |
| 103 | se_cmd->se_lun = deve->se_lun; |
| 104 | se_cmd->pr_res_key = deve->pr_res_key; |
| 105 | se_cmd->orig_fe_lun = unpacked_lun; |
| 106 | se_cmd->se_orig_obj_ptr = se_cmd->se_lun->lun_se_dev; |
| 107 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
| 108 | } |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 109 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 110 | |
| 111 | if (!se_lun) { |
| 112 | /* |
| 113 | * Use the se_portal_group->tpg_virt_lun0 to allow for |
| 114 | * REPORT_LUNS, et al to be returned when no active |
| 115 | * MappedLUN=0 exists for this Initiator Port. |
| 116 | */ |
| 117 | if (unpacked_lun != 0) { |
| 118 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; |
| 119 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 120 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 121 | " Access for 0x%08x\n", |
| 122 | se_cmd->se_tfo->get_fabric_name(), |
| 123 | unpacked_lun); |
| 124 | return -ENODEV; |
| 125 | } |
| 126 | /* |
| 127 | * Force WRITE PROTECT for virtual LUN 0 |
| 128 | */ |
| 129 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && |
| 130 | (se_cmd->data_direction != DMA_NONE)) { |
| 131 | se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; |
| 132 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
| 133 | return -EACCES; |
| 134 | } |
| 135 | |
| 136 | se_lun = &se_sess->se_tpg->tpg_virt_lun0; |
| 137 | se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; |
| 138 | se_cmd->orig_fe_lun = 0; |
| 139 | se_cmd->se_orig_obj_ptr = se_cmd->se_lun->lun_se_dev; |
| 140 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 141 | } |
| 142 | /* |
| 143 | * Determine if the struct se_lun is online. |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 144 | * FIXME: Check for LUN_RESET + UNIT Attention |
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 | if (se_dev_check_online(se_lun->lun_se_dev) != 0) { |
| 147 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; |
| 148 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 149 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 150 | } |
| 151 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 152 | /* Directly associate cmd with se_dev */ |
| 153 | se_cmd->se_dev = se_lun->lun_se_dev; |
| 154 | |
| 155 | /* TODO: get rid of this and use atomics for stats */ |
| 156 | dev = se_lun->lun_se_dev; |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 157 | spin_lock_irqsave(&dev->stats_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 158 | dev->num_cmds++; |
| 159 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
| 160 | dev->write_bytes += se_cmd->data_length; |
| 161 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
| 162 | dev->read_bytes += se_cmd->data_length; |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 163 | spin_unlock_irqrestore(&dev->stats_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 164 | |
| 165 | /* |
| 166 | * Add the iscsi_cmd_t to the struct se_lun's cmd list. This list is used |
| 167 | * for tracking state of struct se_cmds during LUN shutdown events. |
| 168 | */ |
| 169 | spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 170 | list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list); |
Andy Grover | a1d8b49 | 2011-05-02 17:12:10 -0700 | [diff] [blame] | 171 | atomic_set(&se_cmd->transport_lun_active, 1); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 172 | spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); |
| 173 | |
| 174 | return 0; |
| 175 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 176 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 177 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 178 | 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] | 179 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 180 | struct se_dev_entry *deve; |
| 181 | struct se_lun *se_lun = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 182 | struct se_session *se_sess = se_cmd->se_sess; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 183 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 184 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 185 | |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -0800 | [diff] [blame] | 186 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { |
| 187 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; |
| 188 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 189 | return -ENODEV; |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -0800 | [diff] [blame] | 190 | } |
| 191 | |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 192 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 193 | se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun]; |
| 194 | deve = se_cmd->se_deve; |
| 195 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 196 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 197 | se_tmr->tmr_lun = deve->se_lun; |
| 198 | se_cmd->se_lun = deve->se_lun; |
| 199 | se_lun = deve->se_lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 200 | se_cmd->pr_res_key = deve->pr_res_key; |
| 201 | se_cmd->orig_fe_lun = unpacked_lun; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 202 | se_cmd->se_orig_obj_ptr = se_cmd->se_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 203 | } |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 204 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 205 | |
| 206 | if (!se_lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 207 | pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 208 | " Access for 0x%08x\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 209 | se_cmd->se_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 210 | unpacked_lun); |
| 211 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 212 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 213 | } |
| 214 | /* |
| 215 | * Determine if the struct se_lun is online. |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 216 | * FIXME: Check for LUN_RESET + UNIT Attention |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 217 | */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 218 | if (se_dev_check_online(se_lun->lun_se_dev) != 0) { |
| 219 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 220 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 221 | } |
| 222 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 223 | /* Directly associate cmd with se_dev */ |
| 224 | se_cmd->se_dev = se_lun->lun_se_dev; |
| 225 | se_tmr->tmr_dev = se_lun->lun_se_dev; |
| 226 | |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 227 | spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 228 | 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] | 229 | spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 230 | |
| 231 | return 0; |
| 232 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 233 | EXPORT_SYMBOL(transport_lookup_tmr_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 234 | |
| 235 | /* |
| 236 | * This function is called from core_scsi3_emulate_pro_register_and_move() |
| 237 | * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count |
| 238 | * when a matching rtpi is found. |
| 239 | */ |
| 240 | struct se_dev_entry *core_get_se_deve_from_rtpi( |
| 241 | struct se_node_acl *nacl, |
| 242 | u16 rtpi) |
| 243 | { |
| 244 | struct se_dev_entry *deve; |
| 245 | struct se_lun *lun; |
| 246 | struct se_port *port; |
| 247 | struct se_portal_group *tpg = nacl->se_tpg; |
| 248 | u32 i; |
| 249 | |
| 250 | spin_lock_irq(&nacl->device_list_lock); |
| 251 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
| 252 | deve = &nacl->device_list[i]; |
| 253 | |
| 254 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
| 255 | continue; |
| 256 | |
| 257 | lun = deve->se_lun; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 258 | if (!lun) { |
| 259 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 260 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 261 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 262 | continue; |
| 263 | } |
| 264 | port = lun->lun_sep; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 265 | if (!port) { |
| 266 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 267 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 268 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 269 | continue; |
| 270 | } |
| 271 | if (port->sep_rtpi != rtpi) |
| 272 | continue; |
| 273 | |
| 274 | atomic_inc(&deve->pr_ref_count); |
| 275 | smp_mb__after_atomic_inc(); |
| 276 | spin_unlock_irq(&nacl->device_list_lock); |
| 277 | |
| 278 | return deve; |
| 279 | } |
| 280 | spin_unlock_irq(&nacl->device_list_lock); |
| 281 | |
| 282 | return NULL; |
| 283 | } |
| 284 | |
| 285 | int core_free_device_list_for_node( |
| 286 | struct se_node_acl *nacl, |
| 287 | struct se_portal_group *tpg) |
| 288 | { |
| 289 | struct se_dev_entry *deve; |
| 290 | struct se_lun *lun; |
| 291 | u32 i; |
| 292 | |
| 293 | if (!nacl->device_list) |
| 294 | return 0; |
| 295 | |
| 296 | spin_lock_irq(&nacl->device_list_lock); |
| 297 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
| 298 | deve = &nacl->device_list[i]; |
| 299 | |
| 300 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
| 301 | continue; |
| 302 | |
| 303 | if (!deve->se_lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 304 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 305 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 306 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 307 | continue; |
| 308 | } |
| 309 | lun = deve->se_lun; |
| 310 | |
| 311 | spin_unlock_irq(&nacl->device_list_lock); |
| 312 | core_update_device_list_for_node(lun, NULL, deve->mapped_lun, |
| 313 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); |
| 314 | spin_lock_irq(&nacl->device_list_lock); |
| 315 | } |
| 316 | spin_unlock_irq(&nacl->device_list_lock); |
| 317 | |
| 318 | kfree(nacl->device_list); |
| 319 | nacl->device_list = NULL; |
| 320 | |
| 321 | return 0; |
| 322 | } |
| 323 | |
| 324 | void core_dec_lacl_count(struct se_node_acl *se_nacl, struct se_cmd *se_cmd) |
| 325 | { |
| 326 | struct se_dev_entry *deve; |
| 327 | |
| 328 | spin_lock_irq(&se_nacl->device_list_lock); |
| 329 | deve = &se_nacl->device_list[se_cmd->orig_fe_lun]; |
| 330 | deve->deve_cmds--; |
| 331 | spin_unlock_irq(&se_nacl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | void core_update_device_list_access( |
| 335 | u32 mapped_lun, |
| 336 | u32 lun_access, |
| 337 | struct se_node_acl *nacl) |
| 338 | { |
| 339 | struct se_dev_entry *deve; |
| 340 | |
| 341 | spin_lock_irq(&nacl->device_list_lock); |
| 342 | deve = &nacl->device_list[mapped_lun]; |
| 343 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
| 344 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; |
| 345 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 346 | } else { |
| 347 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; |
| 348 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 349 | } |
| 350 | spin_unlock_irq(&nacl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 351 | } |
| 352 | |
| 353 | /* core_update_device_list_for_node(): |
| 354 | * |
| 355 | * |
| 356 | */ |
| 357 | int core_update_device_list_for_node( |
| 358 | struct se_lun *lun, |
| 359 | struct se_lun_acl *lun_acl, |
| 360 | u32 mapped_lun, |
| 361 | u32 lun_access, |
| 362 | struct se_node_acl *nacl, |
| 363 | struct se_portal_group *tpg, |
| 364 | int enable) |
| 365 | { |
| 366 | struct se_port *port = lun->lun_sep; |
| 367 | struct se_dev_entry *deve = &nacl->device_list[mapped_lun]; |
| 368 | int trans = 0; |
| 369 | /* |
| 370 | * If the MappedLUN entry is being disabled, the entry in |
| 371 | * port->sep_alua_list must be removed now before clearing the |
| 372 | * struct se_dev_entry pointers below as logic in |
| 373 | * core_alua_do_transition_tg_pt() depends on these being present. |
| 374 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 375 | if (!enable) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 376 | /* |
| 377 | * deve->se_lun_acl will be NULL for demo-mode created LUNs |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 378 | * that have not been explicitly concerted to MappedLUNs -> |
Nicholas Bellinger | 29fe609 | 2011-02-09 15:34:43 -0800 | [diff] [blame] | 379 | * struct se_lun_acl, but we remove deve->alua_port_list from |
| 380 | * port->sep_alua_list. This also means that active UAs and |
| 381 | * NodeACL context specific PR metadata for demo-mode |
| 382 | * MappedLUN *deve will be released below.. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 383 | */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 384 | spin_lock_bh(&port->sep_alua_lock); |
| 385 | list_del(&deve->alua_port_list); |
| 386 | spin_unlock_bh(&port->sep_alua_lock); |
| 387 | } |
| 388 | |
| 389 | spin_lock_irq(&nacl->device_list_lock); |
| 390 | if (enable) { |
| 391 | /* |
| 392 | * Check if the call is handling demo mode -> explict LUN ACL |
| 393 | * transition. This transition must be for the same struct se_lun |
| 394 | * + mapped_lun that was setup in demo mode.. |
| 395 | */ |
| 396 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
| 397 | if (deve->se_lun_acl != NULL) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 398 | pr_err("struct se_dev_entry->se_lun_acl" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 399 | " already set for demo mode -> explict" |
| 400 | " LUN ACL transition\n"); |
Fubo Chen | 85dc98d | 2011-02-09 15:34:48 -0800 | [diff] [blame] | 401 | spin_unlock_irq(&nacl->device_list_lock); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 402 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 403 | } |
| 404 | if (deve->se_lun != lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 405 | pr_err("struct se_dev_entry->se_lun does" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 406 | " match passed struct se_lun for demo mode" |
| 407 | " -> explict LUN ACL transition\n"); |
Fubo Chen | 85dc98d | 2011-02-09 15:34:48 -0800 | [diff] [blame] | 408 | spin_unlock_irq(&nacl->device_list_lock); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 409 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 410 | } |
| 411 | deve->se_lun_acl = lun_acl; |
| 412 | trans = 1; |
| 413 | } else { |
| 414 | deve->se_lun = lun; |
| 415 | deve->se_lun_acl = lun_acl; |
| 416 | deve->mapped_lun = mapped_lun; |
| 417 | deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; |
| 418 | } |
| 419 | |
| 420 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
| 421 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; |
| 422 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 423 | } else { |
| 424 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; |
| 425 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 426 | } |
| 427 | |
| 428 | if (trans) { |
| 429 | spin_unlock_irq(&nacl->device_list_lock); |
| 430 | return 0; |
| 431 | } |
| 432 | deve->creation_time = get_jiffies_64(); |
| 433 | deve->attach_count++; |
| 434 | spin_unlock_irq(&nacl->device_list_lock); |
| 435 | |
| 436 | spin_lock_bh(&port->sep_alua_lock); |
| 437 | list_add_tail(&deve->alua_port_list, &port->sep_alua_list); |
| 438 | spin_unlock_bh(&port->sep_alua_lock); |
| 439 | |
| 440 | return 0; |
| 441 | } |
| 442 | /* |
| 443 | * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE |
| 444 | * PR operation to complete. |
| 445 | */ |
| 446 | spin_unlock_irq(&nacl->device_list_lock); |
| 447 | while (atomic_read(&deve->pr_ref_count) != 0) |
| 448 | cpu_relax(); |
| 449 | spin_lock_irq(&nacl->device_list_lock); |
| 450 | /* |
| 451 | * Disable struct se_dev_entry LUN ACL mapping |
| 452 | */ |
| 453 | core_scsi3_ua_release_all(deve); |
| 454 | deve->se_lun = NULL; |
| 455 | deve->se_lun_acl = NULL; |
| 456 | deve->lun_flags = 0; |
| 457 | deve->creation_time = 0; |
| 458 | deve->attach_count--; |
| 459 | spin_unlock_irq(&nacl->device_list_lock); |
| 460 | |
| 461 | core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); |
| 462 | return 0; |
| 463 | } |
| 464 | |
| 465 | /* core_clear_lun_from_tpg(): |
| 466 | * |
| 467 | * |
| 468 | */ |
| 469 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) |
| 470 | { |
| 471 | struct se_node_acl *nacl; |
| 472 | struct se_dev_entry *deve; |
| 473 | u32 i; |
| 474 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 475 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 476 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 477 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 478 | |
| 479 | spin_lock_irq(&nacl->device_list_lock); |
| 480 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
| 481 | deve = &nacl->device_list[i]; |
| 482 | if (lun != deve->se_lun) |
| 483 | continue; |
| 484 | spin_unlock_irq(&nacl->device_list_lock); |
| 485 | |
| 486 | core_update_device_list_for_node(lun, NULL, |
| 487 | deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, |
| 488 | nacl, tpg, 0); |
| 489 | |
| 490 | spin_lock_irq(&nacl->device_list_lock); |
| 491 | } |
| 492 | spin_unlock_irq(&nacl->device_list_lock); |
| 493 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 494 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 495 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 496 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 497 | } |
| 498 | |
| 499 | static struct se_port *core_alloc_port(struct se_device *dev) |
| 500 | { |
| 501 | struct se_port *port, *port_tmp; |
| 502 | |
| 503 | port = kzalloc(sizeof(struct se_port), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 504 | if (!port) { |
| 505 | pr_err("Unable to allocate struct se_port\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 506 | return ERR_PTR(-ENOMEM); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 507 | } |
| 508 | INIT_LIST_HEAD(&port->sep_alua_list); |
| 509 | INIT_LIST_HEAD(&port->sep_list); |
| 510 | atomic_set(&port->sep_tg_pt_secondary_offline, 0); |
| 511 | spin_lock_init(&port->sep_alua_lock); |
| 512 | mutex_init(&port->sep_tg_pt_md_mutex); |
| 513 | |
| 514 | spin_lock(&dev->se_port_lock); |
| 515 | if (dev->dev_port_count == 0x0000ffff) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 516 | pr_warn("Reached dev->dev_port_count ==" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 517 | " 0x0000ffff\n"); |
| 518 | spin_unlock(&dev->se_port_lock); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 519 | return ERR_PTR(-ENOSPC); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 520 | } |
| 521 | again: |
| 522 | /* |
| 523 | * Allocate the next RELATIVE TARGET PORT IDENTIFER for this struct se_device |
| 524 | * Here is the table from spc4r17 section 7.7.3.8. |
| 525 | * |
| 526 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field |
| 527 | * |
| 528 | * Code Description |
| 529 | * 0h Reserved |
| 530 | * 1h Relative port 1, historically known as port A |
| 531 | * 2h Relative port 2, historically known as port B |
| 532 | * 3h to FFFFh Relative port 3 through 65 535 |
| 533 | */ |
| 534 | port->sep_rtpi = dev->dev_rpti_counter++; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 535 | if (!port->sep_rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 536 | goto again; |
| 537 | |
| 538 | list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { |
| 539 | /* |
| 540 | * Make sure RELATIVE TARGET PORT IDENTIFER is unique |
| 541 | * for 16-bit wrap.. |
| 542 | */ |
| 543 | if (port->sep_rtpi == port_tmp->sep_rtpi) |
| 544 | goto again; |
| 545 | } |
| 546 | spin_unlock(&dev->se_port_lock); |
| 547 | |
| 548 | return port; |
| 549 | } |
| 550 | |
| 551 | static void core_export_port( |
| 552 | struct se_device *dev, |
| 553 | struct se_portal_group *tpg, |
| 554 | struct se_port *port, |
| 555 | struct se_lun *lun) |
| 556 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 557 | struct se_subsystem_dev *su_dev = dev->se_sub_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 558 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; |
| 559 | |
| 560 | spin_lock(&dev->se_port_lock); |
| 561 | spin_lock(&lun->lun_sep_lock); |
| 562 | port->sep_tpg = tpg; |
| 563 | port->sep_lun = lun; |
| 564 | lun->lun_sep = port; |
| 565 | spin_unlock(&lun->lun_sep_lock); |
| 566 | |
| 567 | list_add_tail(&port->sep_list, &dev->dev_sep_list); |
| 568 | spin_unlock(&dev->se_port_lock); |
| 569 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 570 | if (su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 571 | tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); |
| 572 | if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 573 | pr_err("Unable to allocate t10_alua_tg_pt" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 574 | "_gp_member_t\n"); |
| 575 | return; |
| 576 | } |
| 577 | spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
| 578 | __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 579 | su_dev->t10_alua.default_tg_pt_gp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 580 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 581 | pr_debug("%s/%s: Adding to default ALUA Target Port" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 582 | " Group: alua/default_tg_pt_gp\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 583 | dev->transport->name, tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 584 | } |
| 585 | |
| 586 | dev->dev_port_count++; |
| 587 | port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFER */ |
| 588 | } |
| 589 | |
| 590 | /* |
| 591 | * Called with struct se_device->se_port_lock spinlock held. |
| 592 | */ |
| 593 | static void core_release_port(struct se_device *dev, struct se_port *port) |
Dan Carpenter | 5dd7ed2 | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 594 | __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 595 | { |
| 596 | /* |
| 597 | * Wait for any port reference for PR ALL_TG_PT=1 operation |
| 598 | * to complete in __core_scsi3_alloc_registration() |
| 599 | */ |
| 600 | spin_unlock(&dev->se_port_lock); |
| 601 | if (atomic_read(&port->sep_tg_pt_ref_cnt)) |
| 602 | cpu_relax(); |
| 603 | spin_lock(&dev->se_port_lock); |
| 604 | |
| 605 | core_alua_free_tg_pt_gp_mem(port); |
| 606 | |
| 607 | list_del(&port->sep_list); |
| 608 | dev->dev_port_count--; |
| 609 | kfree(port); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 610 | } |
| 611 | |
| 612 | int core_dev_export( |
| 613 | struct se_device *dev, |
| 614 | struct se_portal_group *tpg, |
| 615 | struct se_lun *lun) |
| 616 | { |
| 617 | struct se_port *port; |
| 618 | |
| 619 | port = core_alloc_port(dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 620 | if (IS_ERR(port)) |
| 621 | return PTR_ERR(port); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 622 | |
| 623 | lun->lun_se_dev = dev; |
| 624 | se_dev_start(dev); |
| 625 | |
| 626 | atomic_inc(&dev->dev_export_obj.obj_access_count); |
| 627 | core_export_port(dev, tpg, port, lun); |
| 628 | return 0; |
| 629 | } |
| 630 | |
| 631 | void core_dev_unexport( |
| 632 | struct se_device *dev, |
| 633 | struct se_portal_group *tpg, |
| 634 | struct se_lun *lun) |
| 635 | { |
| 636 | struct se_port *port = lun->lun_sep; |
| 637 | |
| 638 | spin_lock(&lun->lun_sep_lock); |
| 639 | if (lun->lun_se_dev == NULL) { |
| 640 | spin_unlock(&lun->lun_sep_lock); |
| 641 | return; |
| 642 | } |
| 643 | spin_unlock(&lun->lun_sep_lock); |
| 644 | |
| 645 | spin_lock(&dev->se_port_lock); |
| 646 | atomic_dec(&dev->dev_export_obj.obj_access_count); |
| 647 | core_release_port(dev, port); |
| 648 | spin_unlock(&dev->se_port_lock); |
| 649 | |
| 650 | se_dev_stop(dev); |
| 651 | lun->lun_se_dev = NULL; |
| 652 | } |
| 653 | |
Christoph Hellwig | e76a35d | 2011-11-03 17:50:42 -0400 | [diff] [blame] | 654 | int target_report_luns(struct se_task *se_task) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 655 | { |
Christoph Hellwig | e76a35d | 2011-11-03 17:50:42 -0400 | [diff] [blame] | 656 | struct se_cmd *se_cmd = se_task->task_se_cmd; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 657 | struct se_dev_entry *deve; |
| 658 | struct se_lun *se_lun; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 659 | struct se_session *se_sess = se_cmd->se_sess; |
Andy Grover | 05d1c7c | 2011-07-20 19:13:28 +0000 | [diff] [blame] | 660 | unsigned char *buf; |
Nicholas Bellinger | 1078da1 | 2011-05-19 20:19:13 -0700 | [diff] [blame] | 661 | u32 cdb_offset = 0, lun_count = 0, offset = 8, i; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 662 | |
Andy Grover | 05d1c7c | 2011-07-20 19:13:28 +0000 | [diff] [blame] | 663 | buf = transport_kmap_first_data_page(se_cmd); |
| 664 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 665 | /* |
| 666 | * If no struct se_session pointer is present, this struct se_cmd is |
| 667 | * coming via a target_core_mod PASSTHROUGH op, and not through |
| 668 | * a $FABRIC_MOD. In that case, report LUN=0 only. |
| 669 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 670 | if (!se_sess) { |
Nicholas Bellinger | 1078da1 | 2011-05-19 20:19:13 -0700 | [diff] [blame] | 671 | int_to_scsilun(0, (struct scsi_lun *)&buf[offset]); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 672 | lun_count = 1; |
| 673 | goto done; |
| 674 | } |
| 675 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 676 | spin_lock_irq(&se_sess->se_node_acl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 677 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 678 | deve = &se_sess->se_node_acl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 679 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
| 680 | continue; |
| 681 | se_lun = deve->se_lun; |
| 682 | /* |
| 683 | * We determine the correct LUN LIST LENGTH even once we |
| 684 | * have reached the initial allocation length. |
| 685 | * See SPC2-R20 7.19. |
| 686 | */ |
| 687 | lun_count++; |
| 688 | if ((cdb_offset + 8) >= se_cmd->data_length) |
| 689 | continue; |
| 690 | |
Nicholas Bellinger | 1078da1 | 2011-05-19 20:19:13 -0700 | [diff] [blame] | 691 | int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]); |
| 692 | offset += 8; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 693 | cdb_offset += 8; |
| 694 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 695 | spin_unlock_irq(&se_sess->se_node_acl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 696 | |
| 697 | /* |
| 698 | * See SPC3 r07, page 159. |
| 699 | */ |
| 700 | done: |
Andy Grover | 05d1c7c | 2011-07-20 19:13:28 +0000 | [diff] [blame] | 701 | transport_kunmap_first_data_page(se_cmd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 702 | lun_count *= 8; |
| 703 | buf[0] = ((lun_count >> 24) & 0xff); |
| 704 | buf[1] = ((lun_count >> 16) & 0xff); |
| 705 | buf[2] = ((lun_count >> 8) & 0xff); |
| 706 | buf[3] = (lun_count & 0xff); |
| 707 | |
Christoph Hellwig | d29a5b6 | 2011-11-03 17:50:44 -0400 | [diff] [blame^] | 708 | se_task->task_scsi_status = GOOD; |
| 709 | transport_complete_task(se_task, 1); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 710 | return PYX_TRANSPORT_SENT_TO_TRANSPORT; |
| 711 | } |
| 712 | |
| 713 | /* se_release_device_for_hba(): |
| 714 | * |
| 715 | * |
| 716 | */ |
| 717 | void se_release_device_for_hba(struct se_device *dev) |
| 718 | { |
| 719 | struct se_hba *hba = dev->se_hba; |
| 720 | |
| 721 | if ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || |
| 722 | (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) || |
| 723 | (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN) || |
| 724 | (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_ACTIVATED) || |
| 725 | (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_DEACTIVATED)) |
| 726 | se_dev_stop(dev); |
| 727 | |
| 728 | if (dev->dev_ptr) { |
| 729 | kthread_stop(dev->process_thread); |
| 730 | if (dev->transport->free_device) |
| 731 | dev->transport->free_device(dev->dev_ptr); |
| 732 | } |
| 733 | |
| 734 | spin_lock(&hba->device_lock); |
| 735 | list_del(&dev->dev_list); |
| 736 | hba->dev_count--; |
| 737 | spin_unlock(&hba->device_lock); |
| 738 | |
| 739 | core_scsi3_free_all_registrations(dev); |
| 740 | se_release_vpd_for_dev(dev); |
| 741 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 742 | kfree(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | void se_release_vpd_for_dev(struct se_device *dev) |
| 746 | { |
| 747 | struct t10_vpd *vpd, *vpd_tmp; |
| 748 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 749 | spin_lock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 750 | list_for_each_entry_safe(vpd, vpd_tmp, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 751 | &dev->se_sub_dev->t10_wwn.t10_vpd_list, vpd_list) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 752 | list_del(&vpd->vpd_list); |
| 753 | kfree(vpd); |
| 754 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 755 | spin_unlock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 756 | } |
| 757 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 758 | /* se_free_virtual_device(): |
| 759 | * |
| 760 | * Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers. |
| 761 | */ |
| 762 | int se_free_virtual_device(struct se_device *dev, struct se_hba *hba) |
| 763 | { |
Fubo Chen | 05aea6e | 2011-03-14 04:06:00 -0700 | [diff] [blame] | 764 | if (!list_empty(&dev->dev_sep_list)) |
| 765 | dump_stack(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 766 | |
| 767 | core_alua_free_lu_gp_mem(dev); |
| 768 | se_release_device_for_hba(dev); |
| 769 | |
| 770 | return 0; |
| 771 | } |
| 772 | |
| 773 | static void se_dev_start(struct se_device *dev) |
| 774 | { |
| 775 | struct se_hba *hba = dev->se_hba; |
| 776 | |
| 777 | spin_lock(&hba->device_lock); |
| 778 | atomic_inc(&dev->dev_obj.obj_access_count); |
| 779 | if (atomic_read(&dev->dev_obj.obj_access_count) == 1) { |
| 780 | if (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) { |
| 781 | dev->dev_status &= ~TRANSPORT_DEVICE_DEACTIVATED; |
| 782 | dev->dev_status |= TRANSPORT_DEVICE_ACTIVATED; |
| 783 | } else if (dev->dev_status & |
| 784 | TRANSPORT_DEVICE_OFFLINE_DEACTIVATED) { |
| 785 | dev->dev_status &= |
| 786 | ~TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; |
| 787 | dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_ACTIVATED; |
| 788 | } |
| 789 | } |
| 790 | spin_unlock(&hba->device_lock); |
| 791 | } |
| 792 | |
| 793 | static void se_dev_stop(struct se_device *dev) |
| 794 | { |
| 795 | struct se_hba *hba = dev->se_hba; |
| 796 | |
| 797 | spin_lock(&hba->device_lock); |
| 798 | atomic_dec(&dev->dev_obj.obj_access_count); |
| 799 | if (atomic_read(&dev->dev_obj.obj_access_count) == 0) { |
| 800 | if (dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) { |
| 801 | dev->dev_status &= ~TRANSPORT_DEVICE_ACTIVATED; |
| 802 | dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED; |
| 803 | } else if (dev->dev_status & |
| 804 | TRANSPORT_DEVICE_OFFLINE_ACTIVATED) { |
| 805 | dev->dev_status &= ~TRANSPORT_DEVICE_OFFLINE_ACTIVATED; |
| 806 | dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; |
| 807 | } |
| 808 | } |
| 809 | spin_unlock(&hba->device_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 810 | } |
| 811 | |
| 812 | int se_dev_check_online(struct se_device *dev) |
| 813 | { |
Roland Dreier | 56e34ee | 2011-06-13 20:55:06 -0700 | [diff] [blame] | 814 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 815 | int ret; |
| 816 | |
Roland Dreier | 56e34ee | 2011-06-13 20:55:06 -0700 | [diff] [blame] | 817 | spin_lock_irqsave(&dev->dev_status_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 818 | ret = ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || |
| 819 | (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED)) ? 0 : 1; |
Roland Dreier | 56e34ee | 2011-06-13 20:55:06 -0700 | [diff] [blame] | 820 | spin_unlock_irqrestore(&dev->dev_status_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 821 | |
| 822 | return ret; |
| 823 | } |
| 824 | |
| 825 | int se_dev_check_shutdown(struct se_device *dev) |
| 826 | { |
| 827 | int ret; |
| 828 | |
| 829 | spin_lock_irq(&dev->dev_status_lock); |
| 830 | ret = (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN); |
| 831 | spin_unlock_irq(&dev->dev_status_lock); |
| 832 | |
| 833 | return ret; |
| 834 | } |
| 835 | |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 836 | u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
| 837 | { |
| 838 | u32 tmp, aligned_max_sectors; |
| 839 | /* |
| 840 | * Limit max_sectors to a PAGE_SIZE aligned value for modern |
| 841 | * transport_allocate_data_tasks() operation. |
| 842 | */ |
| 843 | tmp = rounddown((max_sectors * block_size), PAGE_SIZE); |
| 844 | aligned_max_sectors = (tmp / block_size); |
| 845 | if (max_sectors != aligned_max_sectors) { |
| 846 | printk(KERN_INFO "Rounding down aligned max_sectors from %u" |
| 847 | " to %u\n", max_sectors, aligned_max_sectors); |
| 848 | return aligned_max_sectors; |
| 849 | } |
| 850 | |
| 851 | return max_sectors; |
| 852 | } |
| 853 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 854 | void se_dev_set_default_attribs( |
| 855 | struct se_device *dev, |
| 856 | struct se_dev_limits *dev_limits) |
| 857 | { |
| 858 | struct queue_limits *limits = &dev_limits->limits; |
| 859 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 860 | dev->se_sub_dev->se_dev_attrib.emulate_dpo = DA_EMULATE_DPO; |
| 861 | dev->se_sub_dev->se_dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; |
| 862 | dev->se_sub_dev->se_dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; |
| 863 | dev->se_sub_dev->se_dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; |
| 864 | dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; |
| 865 | dev->se_sub_dev->se_dev_attrib.emulate_tas = DA_EMULATE_TAS; |
| 866 | dev->se_sub_dev->se_dev_attrib.emulate_tpu = DA_EMULATE_TPU; |
| 867 | dev->se_sub_dev->se_dev_attrib.emulate_tpws = DA_EMULATE_TPWS; |
| 868 | dev->se_sub_dev->se_dev_attrib.emulate_reservations = DA_EMULATE_RESERVATIONS; |
| 869 | dev->se_sub_dev->se_dev_attrib.emulate_alua = DA_EMULATE_ALUA; |
| 870 | dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
Roland Dreier | e22a7f0 | 2011-07-05 13:34:52 -0700 | [diff] [blame] | 871 | dev->se_sub_dev->se_dev_attrib.is_nonrot = DA_IS_NONROT; |
Nicholas Bellinger | 5de619a | 2011-07-17 02:57:58 -0700 | [diff] [blame] | 872 | dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 873 | /* |
| 874 | * The TPU=1 and TPWS=1 settings will be set in TCM/IBLOCK |
| 875 | * iblock_create_virtdevice() from struct queue_limits values |
| 876 | * if blk_queue_discard()==1 |
| 877 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 878 | dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; |
| 879 | dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = |
| 880 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; |
| 881 | dev->se_sub_dev->se_dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; |
| 882 | dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 883 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; |
| 884 | /* |
| 885 | * block_size is based on subsystem plugin dependent requirements. |
| 886 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 887 | dev->se_sub_dev->se_dev_attrib.hw_block_size = limits->logical_block_size; |
| 888 | dev->se_sub_dev->se_dev_attrib.block_size = limits->logical_block_size; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 889 | /* |
| 890 | * max_sectors is based on subsystem plugin dependent requirements. |
| 891 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 892 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors = limits->max_hw_sectors; |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 893 | /* |
| 894 | * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() |
| 895 | */ |
| 896 | limits->max_sectors = se_dev_align_max_sectors(limits->max_sectors, |
| 897 | limits->logical_block_size); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 898 | dev->se_sub_dev->se_dev_attrib.max_sectors = limits->max_sectors; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 899 | /* |
| 900 | * Set optimal_sectors from max_sectors, which can be lowered via |
| 901 | * configfs. |
| 902 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 903 | dev->se_sub_dev->se_dev_attrib.optimal_sectors = limits->max_sectors; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 904 | /* |
| 905 | * queue_depth is based on subsystem plugin dependent requirements. |
| 906 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 907 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth = dev_limits->hw_queue_depth; |
| 908 | dev->se_sub_dev->se_dev_attrib.queue_depth = dev_limits->queue_depth; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 909 | } |
| 910 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 911 | int se_dev_set_max_unmap_lba_count( |
| 912 | struct se_device *dev, |
| 913 | u32 max_unmap_lba_count) |
| 914 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 915 | dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = max_unmap_lba_count; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 916 | pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 917 | dev, dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 918 | return 0; |
| 919 | } |
| 920 | |
| 921 | int se_dev_set_max_unmap_block_desc_count( |
| 922 | struct se_device *dev, |
| 923 | u32 max_unmap_block_desc_count) |
| 924 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 925 | dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = |
| 926 | max_unmap_block_desc_count; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 927 | pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 928 | dev, dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 929 | return 0; |
| 930 | } |
| 931 | |
| 932 | int se_dev_set_unmap_granularity( |
| 933 | struct se_device *dev, |
| 934 | u32 unmap_granularity) |
| 935 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 936 | dev->se_sub_dev->se_dev_attrib.unmap_granularity = unmap_granularity; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 937 | pr_debug("dev[%p]: Set unmap_granularity: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 938 | dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 939 | return 0; |
| 940 | } |
| 941 | |
| 942 | int se_dev_set_unmap_granularity_alignment( |
| 943 | struct se_device *dev, |
| 944 | u32 unmap_granularity_alignment) |
| 945 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 946 | dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 947 | pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 948 | dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 949 | return 0; |
| 950 | } |
| 951 | |
| 952 | int se_dev_set_emulate_dpo(struct se_device *dev, int flag) |
| 953 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 954 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 955 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 956 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 957 | } |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 958 | |
| 959 | pr_err("dpo_emulated not supported\n"); |
| 960 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 961 | } |
| 962 | |
| 963 | int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) |
| 964 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 965 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 966 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 967 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 968 | } |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 969 | |
| 970 | if (dev->transport->fua_write_emulated == 0) { |
| 971 | pr_err("fua_write_emulated not supported\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 972 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 973 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 974 | dev->se_sub_dev->se_dev_attrib.emulate_fua_write = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 975 | pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 976 | dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_write); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 977 | return 0; |
| 978 | } |
| 979 | |
| 980 | int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) |
| 981 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 982 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 983 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 984 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 985 | } |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 986 | |
| 987 | pr_err("ua read emulated not supported\n"); |
| 988 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 989 | } |
| 990 | |
| 991 | int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) |
| 992 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 993 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 994 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 995 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 996 | } |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 997 | if (dev->transport->write_cache_emulated == 0) { |
| 998 | pr_err("write_cache_emulated not supported\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 999 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1000 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1001 | dev->se_sub_dev->se_dev_attrib.emulate_write_cache = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1002 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1003 | dev, dev->se_sub_dev->se_dev_attrib.emulate_write_cache); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1004 | return 0; |
| 1005 | } |
| 1006 | |
| 1007 | int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) |
| 1008 | { |
| 1009 | if ((flag != 0) && (flag != 1) && (flag != 2)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1010 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1011 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1012 | } |
| 1013 | |
| 1014 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1015 | pr_err("dev[%p]: Unable to change SE Device" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1016 | " UA_INTRLCK_CTRL while dev_export_obj: %d count" |
| 1017 | " exists\n", dev, |
| 1018 | atomic_read(&dev->dev_export_obj.obj_access_count)); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1019 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1020 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1021 | dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1022 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1023 | dev, dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1024 | |
| 1025 | return 0; |
| 1026 | } |
| 1027 | |
| 1028 | int se_dev_set_emulate_tas(struct se_device *dev, int flag) |
| 1029 | { |
| 1030 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1031 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1032 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1033 | } |
| 1034 | |
| 1035 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1036 | pr_err("dev[%p]: Unable to change SE Device TAS while" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1037 | " dev_export_obj: %d count exists\n", dev, |
| 1038 | atomic_read(&dev->dev_export_obj.obj_access_count)); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1039 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1040 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1041 | dev->se_sub_dev->se_dev_attrib.emulate_tas = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1042 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1043 | dev, (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1044 | |
| 1045 | return 0; |
| 1046 | } |
| 1047 | |
| 1048 | int se_dev_set_emulate_tpu(struct se_device *dev, int flag) |
| 1049 | { |
| 1050 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1051 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1052 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1053 | } |
| 1054 | /* |
| 1055 | * We expect this value to be non-zero when generic Block Layer |
| 1056 | * Discard supported is detected iblock_create_virtdevice(). |
| 1057 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1058 | if (!dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) { |
| 1059 | pr_err("Generic Block Discard not supported\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1060 | return -ENOSYS; |
| 1061 | } |
| 1062 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1063 | dev->se_sub_dev->se_dev_attrib.emulate_tpu = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1064 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1065 | dev, flag); |
| 1066 | return 0; |
| 1067 | } |
| 1068 | |
| 1069 | int se_dev_set_emulate_tpws(struct se_device *dev, int flag) |
| 1070 | { |
| 1071 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1072 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1073 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1074 | } |
| 1075 | /* |
| 1076 | * We expect this value to be non-zero when generic Block Layer |
| 1077 | * Discard supported is detected iblock_create_virtdevice(). |
| 1078 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1079 | if (!dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) { |
| 1080 | pr_err("Generic Block Discard not supported\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1081 | return -ENOSYS; |
| 1082 | } |
| 1083 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1084 | dev->se_sub_dev->se_dev_attrib.emulate_tpws = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1085 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1086 | dev, flag); |
| 1087 | return 0; |
| 1088 | } |
| 1089 | |
| 1090 | int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) |
| 1091 | { |
| 1092 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1093 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1094 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1095 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1096 | dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1097 | pr_debug("dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1098 | (dev->se_sub_dev->se_dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1099 | return 0; |
| 1100 | } |
| 1101 | |
Roland Dreier | e22a7f0 | 2011-07-05 13:34:52 -0700 | [diff] [blame] | 1102 | int se_dev_set_is_nonrot(struct se_device *dev, int flag) |
| 1103 | { |
| 1104 | if ((flag != 0) && (flag != 1)) { |
| 1105 | printk(KERN_ERR "Illegal value %d\n", flag); |
| 1106 | return -EINVAL; |
| 1107 | } |
| 1108 | dev->se_sub_dev->se_dev_attrib.is_nonrot = flag; |
Nicholas Bellinger | 5de619a | 2011-07-17 02:57:58 -0700 | [diff] [blame] | 1109 | pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n", |
Roland Dreier | e22a7f0 | 2011-07-05 13:34:52 -0700 | [diff] [blame] | 1110 | dev, flag); |
| 1111 | return 0; |
| 1112 | } |
| 1113 | |
Nicholas Bellinger | 5de619a | 2011-07-17 02:57:58 -0700 | [diff] [blame] | 1114 | int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) |
| 1115 | { |
| 1116 | if (flag != 0) { |
| 1117 | printk(KERN_ERR "dev[%p]: SE Device emulatation of restricted" |
| 1118 | " reordering not implemented\n", dev); |
| 1119 | return -ENOSYS; |
| 1120 | } |
| 1121 | dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = flag; |
| 1122 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag); |
| 1123 | return 0; |
| 1124 | } |
| 1125 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1126 | /* |
| 1127 | * Note, this can only be called on unexported SE Device Object. |
| 1128 | */ |
| 1129 | int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) |
| 1130 | { |
| 1131 | u32 orig_queue_depth = dev->queue_depth; |
| 1132 | |
| 1133 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1134 | pr_err("dev[%p]: Unable to change SE Device TCQ while" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1135 | " dev_export_obj: %d count exists\n", dev, |
| 1136 | atomic_read(&dev->dev_export_obj.obj_access_count)); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1137 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1138 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1139 | if (!queue_depth) { |
| 1140 | pr_err("dev[%p]: Illegal ZERO value for queue" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1141 | "_depth\n", dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1142 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1143 | } |
| 1144 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1145 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
| 1146 | if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1147 | pr_err("dev[%p]: Passed queue_depth: %u" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1148 | " exceeds TCM/SE_Device TCQ: %u\n", |
| 1149 | dev, queue_depth, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1150 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth); |
| 1151 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1152 | } |
| 1153 | } else { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1154 | if (queue_depth > dev->se_sub_dev->se_dev_attrib.queue_depth) { |
| 1155 | if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1156 | pr_err("dev[%p]: Passed queue_depth:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1157 | " %u exceeds TCM/SE_Device MAX" |
| 1158 | " TCQ: %u\n", dev, queue_depth, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1159 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth); |
| 1160 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1161 | } |
| 1162 | } |
| 1163 | } |
| 1164 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1165 | dev->se_sub_dev->se_dev_attrib.queue_depth = dev->queue_depth = queue_depth; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1166 | if (queue_depth > orig_queue_depth) |
| 1167 | atomic_add(queue_depth - orig_queue_depth, &dev->depth_left); |
| 1168 | else if (queue_depth < orig_queue_depth) |
| 1169 | atomic_sub(orig_queue_depth - queue_depth, &dev->depth_left); |
| 1170 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1171 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1172 | dev, queue_depth); |
| 1173 | return 0; |
| 1174 | } |
| 1175 | |
| 1176 | int se_dev_set_max_sectors(struct se_device *dev, u32 max_sectors) |
| 1177 | { |
| 1178 | int force = 0; /* Force setting for VDEVS */ |
| 1179 | |
| 1180 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1181 | pr_err("dev[%p]: Unable to change SE Device" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1182 | " max_sectors while dev_export_obj: %d count exists\n", |
| 1183 | dev, atomic_read(&dev->dev_export_obj.obj_access_count)); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1184 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1185 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1186 | if (!max_sectors) { |
| 1187 | pr_err("dev[%p]: Illegal ZERO value for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1188 | " max_sectors\n", dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1189 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1190 | } |
| 1191 | if (max_sectors < DA_STATUS_MAX_SECTORS_MIN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1192 | pr_err("dev[%p]: Passed max_sectors: %u less than" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1193 | " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, max_sectors, |
| 1194 | DA_STATUS_MAX_SECTORS_MIN); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1195 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1196 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1197 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
| 1198 | if (max_sectors > dev->se_sub_dev->se_dev_attrib.hw_max_sectors) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1199 | pr_err("dev[%p]: Passed max_sectors: %u" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1200 | " greater than TCM/SE_Device max_sectors:" |
| 1201 | " %u\n", dev, max_sectors, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1202 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors); |
| 1203 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1204 | } |
| 1205 | } else { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1206 | if (!force && (max_sectors > |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1207 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1208 | pr_err("dev[%p]: Passed max_sectors: %u" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1209 | " greater than TCM/SE_Device max_sectors" |
| 1210 | ": %u, use force=1 to override.\n", dev, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1211 | max_sectors, dev->se_sub_dev->se_dev_attrib.hw_max_sectors); |
| 1212 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1213 | } |
| 1214 | if (max_sectors > DA_STATUS_MAX_SECTORS_MAX) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1215 | pr_err("dev[%p]: Passed max_sectors: %u" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1216 | " greater than DA_STATUS_MAX_SECTORS_MAX:" |
| 1217 | " %u\n", dev, max_sectors, |
| 1218 | DA_STATUS_MAX_SECTORS_MAX); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1219 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1220 | } |
| 1221 | } |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 1222 | /* |
| 1223 | * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() |
| 1224 | */ |
| 1225 | max_sectors = se_dev_align_max_sectors(max_sectors, |
| 1226 | dev->se_sub_dev->se_dev_attrib.block_size); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1227 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1228 | dev->se_sub_dev->se_dev_attrib.max_sectors = max_sectors; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1229 | pr_debug("dev[%p]: SE Device max_sectors changed to %u\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1230 | dev, max_sectors); |
| 1231 | return 0; |
| 1232 | } |
| 1233 | |
| 1234 | int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) |
| 1235 | { |
| 1236 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1237 | pr_err("dev[%p]: Unable to change SE Device" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1238 | " optimal_sectors while dev_export_obj: %d count exists\n", |
| 1239 | dev, atomic_read(&dev->dev_export_obj.obj_access_count)); |
| 1240 | return -EINVAL; |
| 1241 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1242 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1243 | pr_err("dev[%p]: Passed optimal_sectors cannot be" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1244 | " changed for TCM/pSCSI\n", dev); |
| 1245 | return -EINVAL; |
| 1246 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1247 | if (optimal_sectors > dev->se_sub_dev->se_dev_attrib.max_sectors) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1248 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1249 | " greater than max_sectors: %u\n", dev, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1250 | optimal_sectors, dev->se_sub_dev->se_dev_attrib.max_sectors); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1251 | return -EINVAL; |
| 1252 | } |
| 1253 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1254 | dev->se_sub_dev->se_dev_attrib.optimal_sectors = optimal_sectors; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1255 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1256 | dev, optimal_sectors); |
| 1257 | return 0; |
| 1258 | } |
| 1259 | |
| 1260 | int se_dev_set_block_size(struct se_device *dev, u32 block_size) |
| 1261 | { |
| 1262 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1263 | pr_err("dev[%p]: Unable to change SE Device block_size" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1264 | " while dev_export_obj: %d count exists\n", dev, |
| 1265 | atomic_read(&dev->dev_export_obj.obj_access_count)); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1266 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1267 | } |
| 1268 | |
| 1269 | if ((block_size != 512) && |
| 1270 | (block_size != 1024) && |
| 1271 | (block_size != 2048) && |
| 1272 | (block_size != 4096)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1273 | pr_err("dev[%p]: Illegal value for block_device: %u" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1274 | " for SE device, must be 512, 1024, 2048 or 4096\n", |
| 1275 | dev, block_size); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1276 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1277 | } |
| 1278 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1279 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1280 | pr_err("dev[%p]: Not allowed to change block_size for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1281 | " Physical Device, use for Linux/SCSI to change" |
| 1282 | " block_size for underlying hardware\n", dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1283 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1284 | } |
| 1285 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1286 | dev->se_sub_dev->se_dev_attrib.block_size = block_size; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1287 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1288 | dev, block_size); |
| 1289 | return 0; |
| 1290 | } |
| 1291 | |
| 1292 | struct se_lun *core_dev_add_lun( |
| 1293 | struct se_portal_group *tpg, |
| 1294 | struct se_hba *hba, |
| 1295 | struct se_device *dev, |
| 1296 | u32 lun) |
| 1297 | { |
| 1298 | struct se_lun *lun_p; |
| 1299 | u32 lun_access = 0; |
| 1300 | |
| 1301 | if (atomic_read(&dev->dev_access_obj.obj_access_count) != 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1302 | pr_err("Unable to export struct se_device while dev_access_obj: %d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1303 | atomic_read(&dev->dev_access_obj.obj_access_count)); |
| 1304 | return NULL; |
| 1305 | } |
| 1306 | |
| 1307 | lun_p = core_tpg_pre_addlun(tpg, lun); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1308 | if ((IS_ERR(lun_p)) || !lun_p) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1309 | return NULL; |
| 1310 | |
| 1311 | if (dev->dev_flags & DF_READ_ONLY) |
| 1312 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 1313 | else |
| 1314 | lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; |
| 1315 | |
| 1316 | if (core_tpg_post_addlun(tpg, lun_p, lun_access, dev) < 0) |
| 1317 | return NULL; |
| 1318 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1319 | pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1320 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1321 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun, |
| 1322 | tpg->se_tpg_tfo->get_fabric_name(), hba->hba_id); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1323 | /* |
| 1324 | * Update LUN maps for dynamically added initiators when |
| 1325 | * generate_node_acl is enabled. |
| 1326 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1327 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1328 | struct se_node_acl *acl; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1329 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1330 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 1331 | if (acl->dynamic_node_acl && |
| 1332 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || |
| 1333 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1334 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1335 | core_tpg_add_node_to_devs(acl, tpg); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1336 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1337 | } |
| 1338 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1339 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1340 | } |
| 1341 | |
| 1342 | return lun_p; |
| 1343 | } |
| 1344 | |
| 1345 | /* core_dev_del_lun(): |
| 1346 | * |
| 1347 | * |
| 1348 | */ |
| 1349 | int core_dev_del_lun( |
| 1350 | struct se_portal_group *tpg, |
| 1351 | u32 unpacked_lun) |
| 1352 | { |
| 1353 | struct se_lun *lun; |
| 1354 | int ret = 0; |
| 1355 | |
| 1356 | lun = core_tpg_pre_dellun(tpg, unpacked_lun, &ret); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1357 | if (!lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1358 | return ret; |
| 1359 | |
| 1360 | core_tpg_post_dellun(tpg, lun); |
| 1361 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1362 | pr_debug("%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1363 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1364 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, |
| 1365 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1366 | |
| 1367 | return 0; |
| 1368 | } |
| 1369 | |
| 1370 | struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) |
| 1371 | { |
| 1372 | struct se_lun *lun; |
| 1373 | |
| 1374 | spin_lock(&tpg->tpg_lun_lock); |
| 1375 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1376 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1377 | "_PER_TPG-1: %u for Target Portal Group: %hu\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1378 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1379 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1380 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1381 | spin_unlock(&tpg->tpg_lun_lock); |
| 1382 | return NULL; |
| 1383 | } |
| 1384 | lun = &tpg->tpg_lun_list[unpacked_lun]; |
| 1385 | |
| 1386 | if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1387 | pr_err("%s Logical Unit Number: %u is not free on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1388 | " Target Portal Group: %hu, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1389 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
| 1390 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1391 | spin_unlock(&tpg->tpg_lun_lock); |
| 1392 | return NULL; |
| 1393 | } |
| 1394 | spin_unlock(&tpg->tpg_lun_lock); |
| 1395 | |
| 1396 | return lun; |
| 1397 | } |
| 1398 | |
| 1399 | /* core_dev_get_lun(): |
| 1400 | * |
| 1401 | * |
| 1402 | */ |
| 1403 | static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) |
| 1404 | { |
| 1405 | struct se_lun *lun; |
| 1406 | |
| 1407 | spin_lock(&tpg->tpg_lun_lock); |
| 1408 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1409 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1410 | "_TPG-1: %u for Target Portal Group: %hu\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1411 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1412 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1413 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1414 | spin_unlock(&tpg->tpg_lun_lock); |
| 1415 | return NULL; |
| 1416 | } |
| 1417 | lun = &tpg->tpg_lun_list[unpacked_lun]; |
| 1418 | |
| 1419 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1420 | pr_err("%s Logical Unit Number: %u is not active on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1421 | " Target Portal Group: %hu, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1422 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
| 1423 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1424 | spin_unlock(&tpg->tpg_lun_lock); |
| 1425 | return NULL; |
| 1426 | } |
| 1427 | spin_unlock(&tpg->tpg_lun_lock); |
| 1428 | |
| 1429 | return lun; |
| 1430 | } |
| 1431 | |
| 1432 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( |
| 1433 | struct se_portal_group *tpg, |
| 1434 | u32 mapped_lun, |
| 1435 | char *initiatorname, |
| 1436 | int *ret) |
| 1437 | { |
| 1438 | struct se_lun_acl *lacl; |
| 1439 | struct se_node_acl *nacl; |
| 1440 | |
Dan Carpenter | 60d645a | 2011-06-15 10:03:05 -0700 | [diff] [blame] | 1441 | if (strlen(initiatorname) >= TRANSPORT_IQN_LEN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1442 | pr_err("%s InitiatorName exceeds maximum size.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1443 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1444 | *ret = -EOVERFLOW; |
| 1445 | return NULL; |
| 1446 | } |
| 1447 | nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1448 | if (!nacl) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1449 | *ret = -EINVAL; |
| 1450 | return NULL; |
| 1451 | } |
| 1452 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1453 | if (!lacl) { |
| 1454 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1455 | *ret = -ENOMEM; |
| 1456 | return NULL; |
| 1457 | } |
| 1458 | |
| 1459 | INIT_LIST_HEAD(&lacl->lacl_list); |
| 1460 | lacl->mapped_lun = mapped_lun; |
| 1461 | lacl->se_lun_nacl = nacl; |
| 1462 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); |
| 1463 | |
| 1464 | return lacl; |
| 1465 | } |
| 1466 | |
| 1467 | int core_dev_add_initiator_node_lun_acl( |
| 1468 | struct se_portal_group *tpg, |
| 1469 | struct se_lun_acl *lacl, |
| 1470 | u32 unpacked_lun, |
| 1471 | u32 lun_access) |
| 1472 | { |
| 1473 | struct se_lun *lun; |
| 1474 | struct se_node_acl *nacl; |
| 1475 | |
| 1476 | lun = core_dev_get_lun(tpg, unpacked_lun); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1477 | if (!lun) { |
| 1478 | pr_err("%s Logical Unit Number: %u is not active on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1479 | " Target Portal Group: %hu, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1480 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
| 1481 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1482 | return -EINVAL; |
| 1483 | } |
| 1484 | |
| 1485 | nacl = lacl->se_lun_nacl; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1486 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1487 | return -EINVAL; |
| 1488 | |
| 1489 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && |
| 1490 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) |
| 1491 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 1492 | |
| 1493 | lacl->se_lun = lun; |
| 1494 | |
| 1495 | if (core_update_device_list_for_node(lun, lacl, lacl->mapped_lun, |
| 1496 | lun_access, nacl, tpg, 1) < 0) |
| 1497 | return -EINVAL; |
| 1498 | |
| 1499 | spin_lock(&lun->lun_acl_lock); |
| 1500 | list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); |
| 1501 | atomic_inc(&lun->lun_acl_count); |
| 1502 | smp_mb__after_atomic_inc(); |
| 1503 | spin_unlock(&lun->lun_acl_lock); |
| 1504 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1505 | pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1506 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1507 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1508 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
| 1509 | lacl->initiatorname); |
| 1510 | /* |
| 1511 | * Check to see if there are any existing persistent reservation APTPL |
| 1512 | * pre-registrations that need to be enabled for this LUN ACL.. |
| 1513 | */ |
| 1514 | core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl); |
| 1515 | return 0; |
| 1516 | } |
| 1517 | |
| 1518 | /* core_dev_del_initiator_node_lun_acl(): |
| 1519 | * |
| 1520 | * |
| 1521 | */ |
| 1522 | int core_dev_del_initiator_node_lun_acl( |
| 1523 | struct se_portal_group *tpg, |
| 1524 | struct se_lun *lun, |
| 1525 | struct se_lun_acl *lacl) |
| 1526 | { |
| 1527 | struct se_node_acl *nacl; |
| 1528 | |
| 1529 | nacl = lacl->se_lun_nacl; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1530 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1531 | return -EINVAL; |
| 1532 | |
| 1533 | spin_lock(&lun->lun_acl_lock); |
| 1534 | list_del(&lacl->lacl_list); |
| 1535 | atomic_dec(&lun->lun_acl_count); |
| 1536 | smp_mb__after_atomic_dec(); |
| 1537 | spin_unlock(&lun->lun_acl_lock); |
| 1538 | |
| 1539 | core_update_device_list_for_node(lun, NULL, lacl->mapped_lun, |
| 1540 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); |
| 1541 | |
| 1542 | lacl->se_lun = NULL; |
| 1543 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1544 | pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1545 | " InitiatorNode: %s Mapped LUN: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1546 | tpg->se_tpg_tfo->get_fabric_name(), |
| 1547 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1548 | lacl->initiatorname, lacl->mapped_lun); |
| 1549 | |
| 1550 | return 0; |
| 1551 | } |
| 1552 | |
| 1553 | void core_dev_free_initiator_node_lun_acl( |
| 1554 | struct se_portal_group *tpg, |
| 1555 | struct se_lun_acl *lacl) |
| 1556 | { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1557 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1558 | " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1559 | tpg->se_tpg_tfo->tpg_get_tag(tpg), |
| 1560 | tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1561 | lacl->initiatorname, lacl->mapped_lun); |
| 1562 | |
| 1563 | kfree(lacl); |
| 1564 | } |
| 1565 | |
| 1566 | int core_dev_setup_virtual_lun0(void) |
| 1567 | { |
| 1568 | struct se_hba *hba; |
| 1569 | struct se_device *dev; |
| 1570 | struct se_subsystem_dev *se_dev = NULL; |
| 1571 | struct se_subsystem_api *t; |
| 1572 | char buf[16]; |
| 1573 | int ret; |
| 1574 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1575 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1576 | if (IS_ERR(hba)) |
| 1577 | return PTR_ERR(hba); |
| 1578 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1579 | lun0_hba = hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1580 | t = hba->transport; |
| 1581 | |
| 1582 | se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1583 | if (!se_dev) { |
| 1584 | pr_err("Unable to allocate memory for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1585 | " struct se_subsystem_dev\n"); |
| 1586 | ret = -ENOMEM; |
| 1587 | goto out; |
| 1588 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1589 | INIT_LIST_HEAD(&se_dev->se_dev_node); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1590 | INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); |
| 1591 | spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1592 | INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); |
| 1593 | INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); |
| 1594 | spin_lock_init(&se_dev->t10_pr.registration_lock); |
| 1595 | spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1596 | INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); |
| 1597 | spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); |
| 1598 | spin_lock_init(&se_dev->se_dev_lock); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1599 | se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1600 | se_dev->t10_wwn.t10_sub_dev = se_dev; |
| 1601 | se_dev->t10_alua.t10_sub_dev = se_dev; |
| 1602 | se_dev->se_dev_attrib.da_sub_dev = se_dev; |
| 1603 | se_dev->se_dev_hba = hba; |
| 1604 | |
| 1605 | se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, "virt_lun0"); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1606 | if (!se_dev->se_dev_su_ptr) { |
| 1607 | pr_err("Unable to locate subsystem dependent pointer" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1608 | " from allocate_virtdevice()\n"); |
| 1609 | ret = -ENOMEM; |
| 1610 | goto out; |
| 1611 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1612 | lun0_su_dev = se_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1613 | |
| 1614 | memset(buf, 0, 16); |
| 1615 | sprintf(buf, "rd_pages=8"); |
| 1616 | t->set_configfs_dev_params(hba, se_dev, buf, sizeof(buf)); |
| 1617 | |
| 1618 | dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1619 | if (IS_ERR(dev)) { |
| 1620 | ret = PTR_ERR(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1621 | goto out; |
| 1622 | } |
| 1623 | se_dev->se_dev_ptr = dev; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1624 | g_lun0_dev = dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1625 | |
| 1626 | return 0; |
| 1627 | out: |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1628 | lun0_su_dev = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1629 | kfree(se_dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1630 | if (lun0_hba) { |
| 1631 | core_delete_hba(lun0_hba); |
| 1632 | lun0_hba = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1633 | } |
| 1634 | return ret; |
| 1635 | } |
| 1636 | |
| 1637 | |
| 1638 | void core_dev_release_virtual_lun0(void) |
| 1639 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1640 | struct se_hba *hba = lun0_hba; |
| 1641 | struct se_subsystem_dev *su_dev = lun0_su_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1642 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1643 | if (!hba) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1644 | return; |
| 1645 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1646 | if (g_lun0_dev) |
| 1647 | se_free_virtual_device(g_lun0_dev, hba); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1648 | |
| 1649 | kfree(su_dev); |
| 1650 | core_delete_hba(hba); |
| 1651 | } |