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> |
Paul Gortmaker | c53181a | 2011-08-30 18:16:43 -0400 | [diff] [blame] | 38 | #include <linux/export.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 39 | #include <net/sock.h> |
| 40 | #include <net/tcp.h> |
| 41 | #include <scsi/scsi.h> |
Nicholas Bellinger | 1078da1 | 2011-05-19 20:19:13 -0700 | [diff] [blame] | 42 | #include <scsi/scsi_device.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 43 | |
| 44 | #include <target/target_core_base.h> |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 45 | #include <target/target_core_backend.h> |
| 46 | #include <target/target_core_fabric.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 47 | |
Christoph Hellwig | e26d99a | 2011-11-14 12:30:30 -0500 | [diff] [blame] | 48 | #include "target_core_internal.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 49 | #include "target_core_alua.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 50 | #include "target_core_pr.h" |
| 51 | #include "target_core_ua.h" |
| 52 | |
| 53 | static void se_dev_start(struct se_device *dev); |
| 54 | static void se_dev_stop(struct se_device *dev); |
| 55 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 56 | static struct se_hba *lun0_hba; |
| 57 | static struct se_subsystem_dev *lun0_su_dev; |
| 58 | /* not static, needed by tpg.c */ |
| 59 | struct se_device *g_lun0_dev; |
| 60 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 61 | 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] | 62 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 63 | struct se_lun *se_lun = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 64 | struct se_session *se_sess = se_cmd->se_sess; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 65 | struct se_device *dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 66 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 67 | |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -0800 | [diff] [blame] | 68 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { |
| 69 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; |
| 70 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 71 | return -ENODEV; |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -0800 | [diff] [blame] | 72 | } |
| 73 | |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 74 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 75 | se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 76 | if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
| 77 | struct se_dev_entry *deve = se_cmd->se_deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 78 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 79 | deve->total_cmds++; |
| 80 | deve->total_bytes += se_cmd->data_length; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 81 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 82 | if ((se_cmd->data_direction == DMA_TO_DEVICE) && |
| 83 | (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 84 | se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; |
| 85 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 86 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 87 | " Access for 0x%08x\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 88 | se_cmd->se_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 89 | unpacked_lun); |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 90 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 91 | return -EACCES; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 92 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 93 | |
| 94 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
| 95 | deve->write_bytes += se_cmd->data_length; |
| 96 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
| 97 | deve->read_bytes += se_cmd->data_length; |
| 98 | |
| 99 | deve->deve_cmds++; |
| 100 | |
| 101 | se_lun = deve->se_lun; |
| 102 | se_cmd->se_lun = deve->se_lun; |
| 103 | se_cmd->pr_res_key = deve->pr_res_key; |
| 104 | se_cmd->orig_fe_lun = unpacked_lun; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 105 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
| 106 | } |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 107 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 108 | |
| 109 | if (!se_lun) { |
| 110 | /* |
| 111 | * Use the se_portal_group->tpg_virt_lun0 to allow for |
| 112 | * REPORT_LUNS, et al to be returned when no active |
| 113 | * MappedLUN=0 exists for this Initiator Port. |
| 114 | */ |
| 115 | if (unpacked_lun != 0) { |
| 116 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; |
| 117 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 118 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 119 | " Access for 0x%08x\n", |
| 120 | se_cmd->se_tfo->get_fabric_name(), |
| 121 | unpacked_lun); |
| 122 | return -ENODEV; |
| 123 | } |
| 124 | /* |
| 125 | * Force WRITE PROTECT for virtual LUN 0 |
| 126 | */ |
| 127 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && |
| 128 | (se_cmd->data_direction != DMA_NONE)) { |
| 129 | se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; |
| 130 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
| 131 | return -EACCES; |
| 132 | } |
| 133 | |
| 134 | se_lun = &se_sess->se_tpg->tpg_virt_lun0; |
| 135 | se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; |
| 136 | se_cmd->orig_fe_lun = 0; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 137 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 138 | } |
| 139 | /* |
| 140 | * Determine if the struct se_lun is online. |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 141 | * FIXME: Check for LUN_RESET + UNIT Attention |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 142 | */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 143 | if (se_dev_check_online(se_lun->lun_se_dev) != 0) { |
| 144 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; |
| 145 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 146 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 147 | } |
| 148 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 149 | /* Directly associate cmd with se_dev */ |
| 150 | se_cmd->se_dev = se_lun->lun_se_dev; |
| 151 | |
| 152 | /* TODO: get rid of this and use atomics for stats */ |
| 153 | dev = se_lun->lun_se_dev; |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 154 | spin_lock_irqsave(&dev->stats_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 155 | dev->num_cmds++; |
| 156 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
| 157 | dev->write_bytes += se_cmd->data_length; |
| 158 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
| 159 | dev->read_bytes += se_cmd->data_length; |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 160 | spin_unlock_irqrestore(&dev->stats_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 161 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 162 | spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 163 | list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 164 | spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); |
| 165 | |
| 166 | return 0; |
| 167 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 168 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 169 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 170 | 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] | 171 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 172 | struct se_dev_entry *deve; |
| 173 | struct se_lun *se_lun = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 174 | struct se_session *se_sess = se_cmd->se_sess; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 175 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 176 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 177 | |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -0800 | [diff] [blame] | 178 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { |
| 179 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; |
| 180 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 181 | return -ENODEV; |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -0800 | [diff] [blame] | 182 | } |
| 183 | |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 184 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 185 | se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 186 | deve = se_cmd->se_deve; |
| 187 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 188 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 189 | se_tmr->tmr_lun = deve->se_lun; |
| 190 | se_cmd->se_lun = deve->se_lun; |
| 191 | se_lun = deve->se_lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 192 | se_cmd->pr_res_key = deve->pr_res_key; |
| 193 | se_cmd->orig_fe_lun = unpacked_lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 194 | } |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 195 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 196 | |
| 197 | if (!se_lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 198 | pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 199 | " Access for 0x%08x\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 200 | se_cmd->se_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 201 | unpacked_lun); |
| 202 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 203 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 204 | } |
| 205 | /* |
| 206 | * Determine if the struct se_lun is online. |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 207 | * FIXME: Check for LUN_RESET + UNIT Attention |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 208 | */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 209 | if (se_dev_check_online(se_lun->lun_se_dev) != 0) { |
| 210 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 211 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 212 | } |
| 213 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 214 | /* Directly associate cmd with se_dev */ |
| 215 | se_cmd->se_dev = se_lun->lun_se_dev; |
| 216 | se_tmr->tmr_dev = se_lun->lun_se_dev; |
| 217 | |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 218 | spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 219 | 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] | 220 | spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 221 | |
| 222 | return 0; |
| 223 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 224 | EXPORT_SYMBOL(transport_lookup_tmr_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 225 | |
| 226 | /* |
| 227 | * This function is called from core_scsi3_emulate_pro_register_and_move() |
| 228 | * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count |
| 229 | * when a matching rtpi is found. |
| 230 | */ |
| 231 | struct se_dev_entry *core_get_se_deve_from_rtpi( |
| 232 | struct se_node_acl *nacl, |
| 233 | u16 rtpi) |
| 234 | { |
| 235 | struct se_dev_entry *deve; |
| 236 | struct se_lun *lun; |
| 237 | struct se_port *port; |
| 238 | struct se_portal_group *tpg = nacl->se_tpg; |
| 239 | u32 i; |
| 240 | |
| 241 | spin_lock_irq(&nacl->device_list_lock); |
| 242 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 243 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 244 | |
| 245 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
| 246 | continue; |
| 247 | |
| 248 | lun = deve->se_lun; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 249 | if (!lun) { |
| 250 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 251 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 252 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 253 | continue; |
| 254 | } |
| 255 | port = lun->lun_sep; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 256 | if (!port) { |
| 257 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 258 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 259 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 260 | continue; |
| 261 | } |
| 262 | if (port->sep_rtpi != rtpi) |
| 263 | continue; |
| 264 | |
| 265 | atomic_inc(&deve->pr_ref_count); |
| 266 | smp_mb__after_atomic_inc(); |
| 267 | spin_unlock_irq(&nacl->device_list_lock); |
| 268 | |
| 269 | return deve; |
| 270 | } |
| 271 | spin_unlock_irq(&nacl->device_list_lock); |
| 272 | |
| 273 | return NULL; |
| 274 | } |
| 275 | |
| 276 | int core_free_device_list_for_node( |
| 277 | struct se_node_acl *nacl, |
| 278 | struct se_portal_group *tpg) |
| 279 | { |
| 280 | struct se_dev_entry *deve; |
| 281 | struct se_lun *lun; |
| 282 | u32 i; |
| 283 | |
| 284 | if (!nacl->device_list) |
| 285 | return 0; |
| 286 | |
| 287 | spin_lock_irq(&nacl->device_list_lock); |
| 288 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 289 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 290 | |
| 291 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
| 292 | continue; |
| 293 | |
| 294 | if (!deve->se_lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 295 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 296 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 297 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 298 | continue; |
| 299 | } |
| 300 | lun = deve->se_lun; |
| 301 | |
| 302 | spin_unlock_irq(&nacl->device_list_lock); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 303 | core_disable_device_list_for_node(lun, NULL, deve->mapped_lun, |
| 304 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 305 | spin_lock_irq(&nacl->device_list_lock); |
| 306 | } |
| 307 | spin_unlock_irq(&nacl->device_list_lock); |
| 308 | |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 309 | array_free(nacl->device_list, TRANSPORT_MAX_LUNS_PER_TPG); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 310 | nacl->device_list = NULL; |
| 311 | |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | void core_dec_lacl_count(struct se_node_acl *se_nacl, struct se_cmd *se_cmd) |
| 316 | { |
| 317 | struct se_dev_entry *deve; |
Sebastian Andrzej Siewior | 1dd0a06 | 2012-01-10 14:16:58 +0100 | [diff] [blame] | 318 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 319 | |
Sebastian Andrzej Siewior | 1dd0a06 | 2012-01-10 14:16:58 +0100 | [diff] [blame] | 320 | spin_lock_irqsave(&se_nacl->device_list_lock, flags); |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 321 | deve = se_nacl->device_list[se_cmd->orig_fe_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 322 | deve->deve_cmds--; |
Sebastian Andrzej Siewior | 1dd0a06 | 2012-01-10 14:16:58 +0100 | [diff] [blame] | 323 | spin_unlock_irqrestore(&se_nacl->device_list_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | void core_update_device_list_access( |
| 327 | u32 mapped_lun, |
| 328 | u32 lun_access, |
| 329 | struct se_node_acl *nacl) |
| 330 | { |
| 331 | struct se_dev_entry *deve; |
| 332 | |
| 333 | spin_lock_irq(&nacl->device_list_lock); |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 334 | deve = nacl->device_list[mapped_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 335 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
| 336 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; |
| 337 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 338 | } else { |
| 339 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; |
| 340 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 341 | } |
| 342 | spin_unlock_irq(&nacl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 343 | } |
| 344 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 345 | /* core_enable_device_list_for_node(): |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 346 | * |
| 347 | * |
| 348 | */ |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 349 | int core_enable_device_list_for_node( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 350 | struct se_lun *lun, |
| 351 | struct se_lun_acl *lun_acl, |
| 352 | u32 mapped_lun, |
| 353 | u32 lun_access, |
| 354 | struct se_node_acl *nacl, |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 355 | struct se_portal_group *tpg) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 356 | { |
| 357 | struct se_port *port = lun->lun_sep; |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 358 | struct se_dev_entry *deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 359 | |
| 360 | spin_lock_irq(&nacl->device_list_lock); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 361 | |
| 362 | deve = nacl->device_list[mapped_lun]; |
| 363 | |
| 364 | /* |
| 365 | * Check if the call is handling demo mode -> explict LUN ACL |
| 366 | * transition. This transition must be for the same struct se_lun |
| 367 | * + mapped_lun that was setup in demo mode.. |
| 368 | */ |
| 369 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
| 370 | if (deve->se_lun_acl != NULL) { |
| 371 | pr_err("struct se_dev_entry->se_lun_acl" |
| 372 | " already set for demo mode -> explict" |
| 373 | " LUN ACL transition\n"); |
| 374 | spin_unlock_irq(&nacl->device_list_lock); |
| 375 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 376 | } |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 377 | if (deve->se_lun != lun) { |
| 378 | pr_err("struct se_dev_entry->se_lun does" |
| 379 | " match passed struct se_lun for demo mode" |
| 380 | " -> explict LUN ACL transition\n"); |
| 381 | spin_unlock_irq(&nacl->device_list_lock); |
| 382 | return -EINVAL; |
| 383 | } |
| 384 | deve->se_lun_acl = lun_acl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 385 | |
| 386 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
| 387 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; |
| 388 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 389 | } else { |
| 390 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; |
| 391 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 392 | } |
| 393 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 394 | spin_unlock_irq(&nacl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 395 | return 0; |
| 396 | } |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 397 | |
| 398 | deve->se_lun = lun; |
| 399 | deve->se_lun_acl = lun_acl; |
| 400 | deve->mapped_lun = mapped_lun; |
| 401 | deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; |
| 402 | |
| 403 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
| 404 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; |
| 405 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 406 | } else { |
| 407 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; |
| 408 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 409 | } |
| 410 | |
| 411 | deve->creation_time = get_jiffies_64(); |
| 412 | deve->attach_count++; |
| 413 | spin_unlock_irq(&nacl->device_list_lock); |
| 414 | |
| 415 | spin_lock_bh(&port->sep_alua_lock); |
| 416 | list_add_tail(&deve->alua_port_list, &port->sep_alua_list); |
| 417 | spin_unlock_bh(&port->sep_alua_lock); |
| 418 | |
| 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | /* core_disable_device_list_for_node(): |
| 423 | * |
| 424 | * |
| 425 | */ |
| 426 | int core_disable_device_list_for_node( |
| 427 | struct se_lun *lun, |
| 428 | struct se_lun_acl *lun_acl, |
| 429 | u32 mapped_lun, |
| 430 | u32 lun_access, |
| 431 | struct se_node_acl *nacl, |
| 432 | struct se_portal_group *tpg) |
| 433 | { |
| 434 | struct se_port *port = lun->lun_sep; |
Nicholas Bellinger | 77d4c74 | 2012-07-14 15:11:41 -0700 | [diff] [blame] | 435 | struct se_dev_entry *deve = nacl->device_list[mapped_lun]; |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 436 | |
| 437 | /* |
| 438 | * If the MappedLUN entry is being disabled, the entry in |
| 439 | * port->sep_alua_list must be removed now before clearing the |
| 440 | * struct se_dev_entry pointers below as logic in |
| 441 | * core_alua_do_transition_tg_pt() depends on these being present. |
| 442 | * |
| 443 | * deve->se_lun_acl will be NULL for demo-mode created LUNs |
| 444 | * that have not been explicitly converted to MappedLUNs -> |
| 445 | * struct se_lun_acl, but we remove deve->alua_port_list from |
| 446 | * port->sep_alua_list. This also means that active UAs and |
| 447 | * NodeACL context specific PR metadata for demo-mode |
| 448 | * MappedLUN *deve will be released below.. |
| 449 | */ |
| 450 | spin_lock_bh(&port->sep_alua_lock); |
| 451 | list_del(&deve->alua_port_list); |
| 452 | spin_unlock_bh(&port->sep_alua_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 453 | /* |
| 454 | * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE |
| 455 | * PR operation to complete. |
| 456 | */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 457 | while (atomic_read(&deve->pr_ref_count) != 0) |
| 458 | cpu_relax(); |
Nicholas Bellinger | 77d4c74 | 2012-07-14 15:11:41 -0700 | [diff] [blame] | 459 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 460 | spin_lock_irq(&nacl->device_list_lock); |
| 461 | /* |
| 462 | * Disable struct se_dev_entry LUN ACL mapping |
| 463 | */ |
| 464 | core_scsi3_ua_release_all(deve); |
| 465 | deve->se_lun = NULL; |
| 466 | deve->se_lun_acl = NULL; |
| 467 | deve->lun_flags = 0; |
| 468 | deve->creation_time = 0; |
| 469 | deve->attach_count--; |
| 470 | spin_unlock_irq(&nacl->device_list_lock); |
| 471 | |
| 472 | core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); |
| 473 | return 0; |
| 474 | } |
| 475 | |
| 476 | /* core_clear_lun_from_tpg(): |
| 477 | * |
| 478 | * |
| 479 | */ |
| 480 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) |
| 481 | { |
| 482 | struct se_node_acl *nacl; |
| 483 | struct se_dev_entry *deve; |
| 484 | u32 i; |
| 485 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 486 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 487 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 488 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 489 | |
| 490 | spin_lock_irq(&nacl->device_list_lock); |
| 491 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 492 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 493 | if (lun != deve->se_lun) |
| 494 | continue; |
| 495 | spin_unlock_irq(&nacl->device_list_lock); |
| 496 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 497 | core_disable_device_list_for_node(lun, NULL, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 498 | deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 499 | nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 500 | |
| 501 | spin_lock_irq(&nacl->device_list_lock); |
| 502 | } |
| 503 | spin_unlock_irq(&nacl->device_list_lock); |
| 504 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 505 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 506 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 507 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 508 | } |
| 509 | |
| 510 | static struct se_port *core_alloc_port(struct se_device *dev) |
| 511 | { |
| 512 | struct se_port *port, *port_tmp; |
| 513 | |
| 514 | port = kzalloc(sizeof(struct se_port), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 515 | if (!port) { |
| 516 | pr_err("Unable to allocate struct se_port\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 517 | return ERR_PTR(-ENOMEM); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 518 | } |
| 519 | INIT_LIST_HEAD(&port->sep_alua_list); |
| 520 | INIT_LIST_HEAD(&port->sep_list); |
| 521 | atomic_set(&port->sep_tg_pt_secondary_offline, 0); |
| 522 | spin_lock_init(&port->sep_alua_lock); |
| 523 | mutex_init(&port->sep_tg_pt_md_mutex); |
| 524 | |
| 525 | spin_lock(&dev->se_port_lock); |
| 526 | if (dev->dev_port_count == 0x0000ffff) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 527 | pr_warn("Reached dev->dev_port_count ==" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 528 | " 0x0000ffff\n"); |
| 529 | spin_unlock(&dev->se_port_lock); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 530 | return ERR_PTR(-ENOSPC); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 531 | } |
| 532 | again: |
| 533 | /* |
| 534 | * Allocate the next RELATIVE TARGET PORT IDENTIFER for this struct se_device |
| 535 | * Here is the table from spc4r17 section 7.7.3.8. |
| 536 | * |
| 537 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field |
| 538 | * |
| 539 | * Code Description |
| 540 | * 0h Reserved |
| 541 | * 1h Relative port 1, historically known as port A |
| 542 | * 2h Relative port 2, historically known as port B |
| 543 | * 3h to FFFFh Relative port 3 through 65 535 |
| 544 | */ |
| 545 | port->sep_rtpi = dev->dev_rpti_counter++; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 546 | if (!port->sep_rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 547 | goto again; |
| 548 | |
| 549 | list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { |
| 550 | /* |
| 551 | * Make sure RELATIVE TARGET PORT IDENTIFER is unique |
| 552 | * for 16-bit wrap.. |
| 553 | */ |
| 554 | if (port->sep_rtpi == port_tmp->sep_rtpi) |
| 555 | goto again; |
| 556 | } |
| 557 | spin_unlock(&dev->se_port_lock); |
| 558 | |
| 559 | return port; |
| 560 | } |
| 561 | |
| 562 | static void core_export_port( |
| 563 | struct se_device *dev, |
| 564 | struct se_portal_group *tpg, |
| 565 | struct se_port *port, |
| 566 | struct se_lun *lun) |
| 567 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 568 | struct se_subsystem_dev *su_dev = dev->se_sub_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 569 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; |
| 570 | |
| 571 | spin_lock(&dev->se_port_lock); |
| 572 | spin_lock(&lun->lun_sep_lock); |
| 573 | port->sep_tpg = tpg; |
| 574 | port->sep_lun = lun; |
| 575 | lun->lun_sep = port; |
| 576 | spin_unlock(&lun->lun_sep_lock); |
| 577 | |
| 578 | list_add_tail(&port->sep_list, &dev->dev_sep_list); |
| 579 | spin_unlock(&dev->se_port_lock); |
| 580 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 581 | if (su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 582 | tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); |
| 583 | if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 584 | pr_err("Unable to allocate t10_alua_tg_pt" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 585 | "_gp_member_t\n"); |
| 586 | return; |
| 587 | } |
| 588 | spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
| 589 | __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 590 | su_dev->t10_alua.default_tg_pt_gp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 591 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 592 | pr_debug("%s/%s: Adding to default ALUA Target Port" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 593 | " Group: alua/default_tg_pt_gp\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 594 | dev->transport->name, tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | dev->dev_port_count++; |
| 598 | port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFER */ |
| 599 | } |
| 600 | |
| 601 | /* |
| 602 | * Called with struct se_device->se_port_lock spinlock held. |
| 603 | */ |
| 604 | 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] | 605 | __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 606 | { |
| 607 | /* |
| 608 | * Wait for any port reference for PR ALL_TG_PT=1 operation |
| 609 | * to complete in __core_scsi3_alloc_registration() |
| 610 | */ |
| 611 | spin_unlock(&dev->se_port_lock); |
| 612 | if (atomic_read(&port->sep_tg_pt_ref_cnt)) |
| 613 | cpu_relax(); |
| 614 | spin_lock(&dev->se_port_lock); |
| 615 | |
| 616 | core_alua_free_tg_pt_gp_mem(port); |
| 617 | |
| 618 | list_del(&port->sep_list); |
| 619 | dev->dev_port_count--; |
| 620 | kfree(port); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 621 | } |
| 622 | |
| 623 | int core_dev_export( |
| 624 | struct se_device *dev, |
| 625 | struct se_portal_group *tpg, |
| 626 | struct se_lun *lun) |
| 627 | { |
| 628 | struct se_port *port; |
| 629 | |
| 630 | port = core_alloc_port(dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 631 | if (IS_ERR(port)) |
| 632 | return PTR_ERR(port); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 633 | |
| 634 | lun->lun_se_dev = dev; |
| 635 | se_dev_start(dev); |
| 636 | |
| 637 | atomic_inc(&dev->dev_export_obj.obj_access_count); |
| 638 | core_export_port(dev, tpg, port, lun); |
| 639 | return 0; |
| 640 | } |
| 641 | |
| 642 | void core_dev_unexport( |
| 643 | struct se_device *dev, |
| 644 | struct se_portal_group *tpg, |
| 645 | struct se_lun *lun) |
| 646 | { |
| 647 | struct se_port *port = lun->lun_sep; |
| 648 | |
| 649 | spin_lock(&lun->lun_sep_lock); |
| 650 | if (lun->lun_se_dev == NULL) { |
| 651 | spin_unlock(&lun->lun_sep_lock); |
| 652 | return; |
| 653 | } |
| 654 | spin_unlock(&lun->lun_sep_lock); |
| 655 | |
| 656 | spin_lock(&dev->se_port_lock); |
| 657 | atomic_dec(&dev->dev_export_obj.obj_access_count); |
| 658 | core_release_port(dev, port); |
| 659 | spin_unlock(&dev->se_port_lock); |
| 660 | |
| 661 | se_dev_stop(dev); |
| 662 | lun->lun_se_dev = NULL; |
| 663 | } |
| 664 | |
Christoph Hellwig | 6bb35e0 | 2012-04-23 11:35:33 -0400 | [diff] [blame] | 665 | int target_report_luns(struct se_cmd *se_cmd) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 666 | { |
| 667 | struct se_dev_entry *deve; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 668 | struct se_session *se_sess = se_cmd->se_sess; |
Andy Grover | 05d1c7c | 2011-07-20 19:13:28 +0000 | [diff] [blame] | 669 | unsigned char *buf; |
Jörn Engel | 99f730d | 2012-02-16 11:14:27 -0500 | [diff] [blame] | 670 | u32 lun_count = 0, offset = 8, i; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 671 | |
Paolo Bonzini | 9b16b9e | 2012-09-07 17:30:34 +0200 | [diff] [blame^] | 672 | if (se_cmd->data_length < 16) { |
| 673 | pr_warn("REPORT LUNS allocation length %u too small\n", |
| 674 | se_cmd->data_length); |
| 675 | se_cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; |
| 676 | return -EINVAL; |
| 677 | } |
| 678 | |
Jörn Engel | 47f1b88 | 2012-02-15 16:52:11 -0500 | [diff] [blame] | 679 | buf = transport_kmap_data_sg(se_cmd); |
| 680 | if (!buf) |
| 681 | return -ENOMEM; |
Andy Grover | 05d1c7c | 2011-07-20 19:13:28 +0000 | [diff] [blame] | 682 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 683 | /* |
| 684 | * If no struct se_session pointer is present, this struct se_cmd is |
| 685 | * coming via a target_core_mod PASSTHROUGH op, and not through |
| 686 | * a $FABRIC_MOD. In that case, report LUN=0 only. |
| 687 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 688 | if (!se_sess) { |
Nicholas Bellinger | 1078da1 | 2011-05-19 20:19:13 -0700 | [diff] [blame] | 689 | int_to_scsilun(0, (struct scsi_lun *)&buf[offset]); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 690 | lun_count = 1; |
| 691 | goto done; |
| 692 | } |
| 693 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 694 | spin_lock_irq(&se_sess->se_node_acl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 695 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 696 | deve = se_sess->se_node_acl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 697 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
| 698 | continue; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 699 | /* |
| 700 | * We determine the correct LUN LIST LENGTH even once we |
| 701 | * have reached the initial allocation length. |
| 702 | * See SPC2-R20 7.19. |
| 703 | */ |
| 704 | lun_count++; |
Jörn Engel | 99f730d | 2012-02-16 11:14:27 -0500 | [diff] [blame] | 705 | if ((offset + 8) > se_cmd->data_length) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 706 | continue; |
| 707 | |
Nicholas Bellinger | 1078da1 | 2011-05-19 20:19:13 -0700 | [diff] [blame] | 708 | int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]); |
| 709 | offset += 8; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 710 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 711 | spin_unlock_irq(&se_sess->se_node_acl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 712 | |
| 713 | /* |
| 714 | * See SPC3 r07, page 159. |
| 715 | */ |
| 716 | done: |
| 717 | lun_count *= 8; |
| 718 | buf[0] = ((lun_count >> 24) & 0xff); |
| 719 | buf[1] = ((lun_count >> 16) & 0xff); |
| 720 | buf[2] = ((lun_count >> 8) & 0xff); |
| 721 | buf[3] = (lun_count & 0xff); |
Jörn Engel | 382436f | 2012-02-15 16:51:32 -0500 | [diff] [blame] | 722 | transport_kunmap_data_sg(se_cmd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 723 | |
Christoph Hellwig | 6bb35e0 | 2012-04-23 11:35:33 -0400 | [diff] [blame] | 724 | target_complete_cmd(se_cmd, GOOD); |
Nicholas Bellinger | 03e98c9 | 2011-11-04 02:36:16 -0700 | [diff] [blame] | 725 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 726 | } |
| 727 | |
| 728 | /* se_release_device_for_hba(): |
| 729 | * |
| 730 | * |
| 731 | */ |
| 732 | void se_release_device_for_hba(struct se_device *dev) |
| 733 | { |
| 734 | struct se_hba *hba = dev->se_hba; |
| 735 | |
| 736 | if ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || |
| 737 | (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) || |
| 738 | (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN) || |
| 739 | (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_ACTIVATED) || |
| 740 | (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_DEACTIVATED)) |
| 741 | se_dev_stop(dev); |
| 742 | |
| 743 | if (dev->dev_ptr) { |
Christoph Hellwig | af87729 | 2012-07-08 15:58:49 -0400 | [diff] [blame] | 744 | destroy_workqueue(dev->tmr_wq); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 745 | if (dev->transport->free_device) |
| 746 | dev->transport->free_device(dev->dev_ptr); |
| 747 | } |
| 748 | |
| 749 | spin_lock(&hba->device_lock); |
| 750 | list_del(&dev->dev_list); |
| 751 | hba->dev_count--; |
| 752 | spin_unlock(&hba->device_lock); |
| 753 | |
| 754 | core_scsi3_free_all_registrations(dev); |
| 755 | se_release_vpd_for_dev(dev); |
| 756 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 757 | kfree(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 758 | } |
| 759 | |
| 760 | void se_release_vpd_for_dev(struct se_device *dev) |
| 761 | { |
| 762 | struct t10_vpd *vpd, *vpd_tmp; |
| 763 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 764 | spin_lock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 765 | list_for_each_entry_safe(vpd, vpd_tmp, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 766 | &dev->se_sub_dev->t10_wwn.t10_vpd_list, vpd_list) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 767 | list_del(&vpd->vpd_list); |
| 768 | kfree(vpd); |
| 769 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 770 | spin_unlock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 771 | } |
| 772 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 773 | /* se_free_virtual_device(): |
| 774 | * |
| 775 | * Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers. |
| 776 | */ |
| 777 | int se_free_virtual_device(struct se_device *dev, struct se_hba *hba) |
| 778 | { |
Fubo Chen | 05aea6e | 2011-03-14 04:06:00 -0700 | [diff] [blame] | 779 | if (!list_empty(&dev->dev_sep_list)) |
| 780 | dump_stack(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 781 | |
| 782 | core_alua_free_lu_gp_mem(dev); |
| 783 | se_release_device_for_hba(dev); |
| 784 | |
| 785 | return 0; |
| 786 | } |
| 787 | |
| 788 | static void se_dev_start(struct se_device *dev) |
| 789 | { |
| 790 | struct se_hba *hba = dev->se_hba; |
| 791 | |
| 792 | spin_lock(&hba->device_lock); |
| 793 | atomic_inc(&dev->dev_obj.obj_access_count); |
| 794 | if (atomic_read(&dev->dev_obj.obj_access_count) == 1) { |
| 795 | if (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) { |
| 796 | dev->dev_status &= ~TRANSPORT_DEVICE_DEACTIVATED; |
| 797 | dev->dev_status |= TRANSPORT_DEVICE_ACTIVATED; |
| 798 | } else if (dev->dev_status & |
| 799 | TRANSPORT_DEVICE_OFFLINE_DEACTIVATED) { |
| 800 | dev->dev_status &= |
| 801 | ~TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; |
| 802 | dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_ACTIVATED; |
| 803 | } |
| 804 | } |
| 805 | spin_unlock(&hba->device_lock); |
| 806 | } |
| 807 | |
| 808 | static void se_dev_stop(struct se_device *dev) |
| 809 | { |
| 810 | struct se_hba *hba = dev->se_hba; |
| 811 | |
| 812 | spin_lock(&hba->device_lock); |
| 813 | atomic_dec(&dev->dev_obj.obj_access_count); |
| 814 | if (atomic_read(&dev->dev_obj.obj_access_count) == 0) { |
| 815 | if (dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) { |
| 816 | dev->dev_status &= ~TRANSPORT_DEVICE_ACTIVATED; |
| 817 | dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED; |
| 818 | } else if (dev->dev_status & |
| 819 | TRANSPORT_DEVICE_OFFLINE_ACTIVATED) { |
| 820 | dev->dev_status &= ~TRANSPORT_DEVICE_OFFLINE_ACTIVATED; |
| 821 | dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; |
| 822 | } |
| 823 | } |
| 824 | spin_unlock(&hba->device_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 825 | } |
| 826 | |
| 827 | int se_dev_check_online(struct se_device *dev) |
| 828 | { |
Roland Dreier | 56e34ee | 2011-06-13 20:55:06 -0700 | [diff] [blame] | 829 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 830 | int ret; |
| 831 | |
Roland Dreier | 56e34ee | 2011-06-13 20:55:06 -0700 | [diff] [blame] | 832 | spin_lock_irqsave(&dev->dev_status_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 833 | ret = ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || |
| 834 | (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED)) ? 0 : 1; |
Roland Dreier | 56e34ee | 2011-06-13 20:55:06 -0700 | [diff] [blame] | 835 | spin_unlock_irqrestore(&dev->dev_status_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 836 | |
| 837 | return ret; |
| 838 | } |
| 839 | |
| 840 | int se_dev_check_shutdown(struct se_device *dev) |
| 841 | { |
| 842 | int ret; |
| 843 | |
| 844 | spin_lock_irq(&dev->dev_status_lock); |
| 845 | ret = (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN); |
| 846 | spin_unlock_irq(&dev->dev_status_lock); |
| 847 | |
| 848 | return ret; |
| 849 | } |
| 850 | |
Roland Dreier | c804537 | 2012-07-16 15:17:12 -0700 | [diff] [blame] | 851 | static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 852 | { |
| 853 | u32 tmp, aligned_max_sectors; |
| 854 | /* |
| 855 | * Limit max_sectors to a PAGE_SIZE aligned value for modern |
| 856 | * transport_allocate_data_tasks() operation. |
| 857 | */ |
| 858 | tmp = rounddown((max_sectors * block_size), PAGE_SIZE); |
| 859 | aligned_max_sectors = (tmp / block_size); |
| 860 | if (max_sectors != aligned_max_sectors) { |
| 861 | printk(KERN_INFO "Rounding down aligned max_sectors from %u" |
| 862 | " to %u\n", max_sectors, aligned_max_sectors); |
| 863 | return aligned_max_sectors; |
| 864 | } |
| 865 | |
| 866 | return max_sectors; |
| 867 | } |
| 868 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 869 | void se_dev_set_default_attribs( |
| 870 | struct se_device *dev, |
| 871 | struct se_dev_limits *dev_limits) |
| 872 | { |
| 873 | struct queue_limits *limits = &dev_limits->limits; |
| 874 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 875 | dev->se_sub_dev->se_dev_attrib.emulate_dpo = DA_EMULATE_DPO; |
| 876 | dev->se_sub_dev->se_dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; |
| 877 | dev->se_sub_dev->se_dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; |
| 878 | dev->se_sub_dev->se_dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; |
| 879 | dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; |
| 880 | dev->se_sub_dev->se_dev_attrib.emulate_tas = DA_EMULATE_TAS; |
| 881 | dev->se_sub_dev->se_dev_attrib.emulate_tpu = DA_EMULATE_TPU; |
| 882 | dev->se_sub_dev->se_dev_attrib.emulate_tpws = DA_EMULATE_TPWS; |
| 883 | dev->se_sub_dev->se_dev_attrib.emulate_reservations = DA_EMULATE_RESERVATIONS; |
| 884 | dev->se_sub_dev->se_dev_attrib.emulate_alua = DA_EMULATE_ALUA; |
| 885 | 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] | 886 | dev->se_sub_dev->se_dev_attrib.is_nonrot = DA_IS_NONROT; |
Nicholas Bellinger | 5de619a | 2011-07-17 02:57:58 -0700 | [diff] [blame] | 887 | 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] | 888 | /* |
| 889 | * The TPU=1 and TPWS=1 settings will be set in TCM/IBLOCK |
| 890 | * iblock_create_virtdevice() from struct queue_limits values |
| 891 | * if blk_queue_discard()==1 |
| 892 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 893 | dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; |
| 894 | dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = |
| 895 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; |
| 896 | dev->se_sub_dev->se_dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; |
| 897 | dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 898 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; |
| 899 | /* |
| 900 | * block_size is based on subsystem plugin dependent requirements. |
| 901 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 902 | dev->se_sub_dev->se_dev_attrib.hw_block_size = limits->logical_block_size; |
| 903 | 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] | 904 | /* |
Nicholas Bellinger | 11e764b | 2012-05-09 12:42:09 -0700 | [diff] [blame] | 905 | * Align max_hw_sectors down to PAGE_SIZE I/O transfers |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 906 | */ |
Nicholas Bellinger | 11e764b | 2012-05-09 12:42:09 -0700 | [diff] [blame] | 907 | limits->max_hw_sectors = se_dev_align_max_sectors(limits->max_hw_sectors, |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 908 | limits->logical_block_size); |
Nicholas Bellinger | 11e764b | 2012-05-09 12:42:09 -0700 | [diff] [blame] | 909 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors = limits->max_hw_sectors; |
| 910 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 911 | /* |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 912 | * Set fabric_max_sectors, which is reported in block limits |
| 913 | * VPD page (B0h). |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 914 | */ |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 915 | dev->se_sub_dev->se_dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS; |
| 916 | /* |
| 917 | * Set optimal_sectors from fabric_max_sectors, which can be |
| 918 | * lowered via configfs. |
| 919 | */ |
| 920 | dev->se_sub_dev->se_dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 921 | /* |
| 922 | * queue_depth is based on subsystem plugin dependent requirements. |
| 923 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 924 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth = dev_limits->hw_queue_depth; |
| 925 | 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] | 926 | } |
| 927 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 928 | int se_dev_set_max_unmap_lba_count( |
| 929 | struct se_device *dev, |
| 930 | u32 max_unmap_lba_count) |
| 931 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 932 | 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] | 933 | pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 934 | dev, dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 935 | return 0; |
| 936 | } |
| 937 | |
| 938 | int se_dev_set_max_unmap_block_desc_count( |
| 939 | struct se_device *dev, |
| 940 | u32 max_unmap_block_desc_count) |
| 941 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 942 | dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = |
| 943 | max_unmap_block_desc_count; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 944 | pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 945 | 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] | 946 | return 0; |
| 947 | } |
| 948 | |
| 949 | int se_dev_set_unmap_granularity( |
| 950 | struct se_device *dev, |
| 951 | u32 unmap_granularity) |
| 952 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 953 | dev->se_sub_dev->se_dev_attrib.unmap_granularity = unmap_granularity; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 954 | pr_debug("dev[%p]: Set unmap_granularity: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 955 | dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 956 | return 0; |
| 957 | } |
| 958 | |
| 959 | int se_dev_set_unmap_granularity_alignment( |
| 960 | struct se_device *dev, |
| 961 | u32 unmap_granularity_alignment) |
| 962 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 963 | 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] | 964 | pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 965 | dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 966 | return 0; |
| 967 | } |
| 968 | |
| 969 | int se_dev_set_emulate_dpo(struct se_device *dev, int flag) |
| 970 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 971 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 972 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 973 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 974 | } |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 975 | |
Andy Grover | c638830 | 2011-11-30 12:11:50 -0800 | [diff] [blame] | 976 | if (flag) { |
| 977 | pr_err("dpo_emulated not supported\n"); |
| 978 | return -EINVAL; |
| 979 | } |
| 980 | |
| 981 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 982 | } |
| 983 | |
| 984 | int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) |
| 985 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 986 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 987 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 988 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 989 | } |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 990 | |
Andy Grover | c638830 | 2011-11-30 12:11:50 -0800 | [diff] [blame] | 991 | if (flag && dev->transport->fua_write_emulated == 0) { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 992 | pr_err("fua_write_emulated not supported\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 993 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 994 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 995 | dev->se_sub_dev->se_dev_attrib.emulate_fua_write = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 996 | pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 997 | dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_write); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 998 | return 0; |
| 999 | } |
| 1000 | |
| 1001 | int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) |
| 1002 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 1003 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1004 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1005 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1006 | } |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 1007 | |
Andy Grover | c638830 | 2011-11-30 12:11:50 -0800 | [diff] [blame] | 1008 | if (flag) { |
| 1009 | pr_err("ua read emulated not supported\n"); |
| 1010 | return -EINVAL; |
| 1011 | } |
| 1012 | |
| 1013 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1014 | } |
| 1015 | |
| 1016 | int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) |
| 1017 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 1018 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1019 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1020 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1021 | } |
Andy Grover | c638830 | 2011-11-30 12:11:50 -0800 | [diff] [blame] | 1022 | if (flag && dev->transport->write_cache_emulated == 0) { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 1023 | pr_err("write_cache_emulated not supported\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1024 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1025 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1026 | dev->se_sub_dev->se_dev_attrib.emulate_write_cache = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1027 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1028 | dev, dev->se_sub_dev->se_dev_attrib.emulate_write_cache); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1029 | return 0; |
| 1030 | } |
| 1031 | |
| 1032 | int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) |
| 1033 | { |
| 1034 | if ((flag != 0) && (flag != 1) && (flag != 2)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1035 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1036 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1037 | } |
| 1038 | |
| 1039 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1040 | pr_err("dev[%p]: Unable to change SE Device" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1041 | " UA_INTRLCK_CTRL while dev_export_obj: %d count" |
| 1042 | " exists\n", dev, |
| 1043 | atomic_read(&dev->dev_export_obj.obj_access_count)); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1044 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1045 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1046 | dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1047 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1048 | dev, dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1049 | |
| 1050 | return 0; |
| 1051 | } |
| 1052 | |
| 1053 | int se_dev_set_emulate_tas(struct se_device *dev, int flag) |
| 1054 | { |
| 1055 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1056 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1057 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1058 | } |
| 1059 | |
| 1060 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1061 | pr_err("dev[%p]: Unable to change SE Device TAS while" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1062 | " dev_export_obj: %d count exists\n", dev, |
| 1063 | atomic_read(&dev->dev_export_obj.obj_access_count)); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1064 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1065 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1066 | dev->se_sub_dev->se_dev_attrib.emulate_tas = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1067 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1068 | dev, (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1069 | |
| 1070 | return 0; |
| 1071 | } |
| 1072 | |
| 1073 | int se_dev_set_emulate_tpu(struct se_device *dev, int flag) |
| 1074 | { |
| 1075 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1076 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1077 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1078 | } |
| 1079 | /* |
| 1080 | * We expect this value to be non-zero when generic Block Layer |
| 1081 | * Discard supported is detected iblock_create_virtdevice(). |
| 1082 | */ |
Andy Grover | c638830 | 2011-11-30 12:11:50 -0800 | [diff] [blame] | 1083 | if (flag && !dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1084 | pr_err("Generic Block Discard not supported\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1085 | return -ENOSYS; |
| 1086 | } |
| 1087 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1088 | dev->se_sub_dev->se_dev_attrib.emulate_tpu = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1089 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1090 | dev, flag); |
| 1091 | return 0; |
| 1092 | } |
| 1093 | |
| 1094 | int se_dev_set_emulate_tpws(struct se_device *dev, int flag) |
| 1095 | { |
| 1096 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1097 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1098 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1099 | } |
| 1100 | /* |
| 1101 | * We expect this value to be non-zero when generic Block Layer |
| 1102 | * Discard supported is detected iblock_create_virtdevice(). |
| 1103 | */ |
Andy Grover | c638830 | 2011-11-30 12:11:50 -0800 | [diff] [blame] | 1104 | if (flag && !dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1105 | pr_err("Generic Block Discard not supported\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1106 | return -ENOSYS; |
| 1107 | } |
| 1108 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1109 | dev->se_sub_dev->se_dev_attrib.emulate_tpws = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1110 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1111 | dev, flag); |
| 1112 | return 0; |
| 1113 | } |
| 1114 | |
| 1115 | int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) |
| 1116 | { |
| 1117 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1118 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1119 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1120 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1121 | dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1122 | 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] | 1123 | (dev->se_sub_dev->se_dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1124 | return 0; |
| 1125 | } |
| 1126 | |
Roland Dreier | e22a7f0 | 2011-07-05 13:34:52 -0700 | [diff] [blame] | 1127 | int se_dev_set_is_nonrot(struct se_device *dev, int flag) |
| 1128 | { |
| 1129 | if ((flag != 0) && (flag != 1)) { |
| 1130 | printk(KERN_ERR "Illegal value %d\n", flag); |
| 1131 | return -EINVAL; |
| 1132 | } |
| 1133 | dev->se_sub_dev->se_dev_attrib.is_nonrot = flag; |
Nicholas Bellinger | 5de619a | 2011-07-17 02:57:58 -0700 | [diff] [blame] | 1134 | pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n", |
Roland Dreier | e22a7f0 | 2011-07-05 13:34:52 -0700 | [diff] [blame] | 1135 | dev, flag); |
| 1136 | return 0; |
| 1137 | } |
| 1138 | |
Nicholas Bellinger | 5de619a | 2011-07-17 02:57:58 -0700 | [diff] [blame] | 1139 | int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) |
| 1140 | { |
| 1141 | if (flag != 0) { |
| 1142 | printk(KERN_ERR "dev[%p]: SE Device emulatation of restricted" |
| 1143 | " reordering not implemented\n", dev); |
| 1144 | return -ENOSYS; |
| 1145 | } |
| 1146 | dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = flag; |
| 1147 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag); |
| 1148 | return 0; |
| 1149 | } |
| 1150 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1151 | /* |
| 1152 | * Note, this can only be called on unexported SE Device Object. |
| 1153 | */ |
| 1154 | int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) |
| 1155 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1156 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1157 | pr_err("dev[%p]: Unable to change SE Device TCQ while" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1158 | " dev_export_obj: %d count exists\n", dev, |
| 1159 | atomic_read(&dev->dev_export_obj.obj_access_count)); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1160 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1161 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1162 | if (!queue_depth) { |
| 1163 | pr_err("dev[%p]: Illegal ZERO value for queue" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1164 | "_depth\n", dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1165 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1166 | } |
| 1167 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1168 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
| 1169 | 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] | 1170 | pr_err("dev[%p]: Passed queue_depth: %u" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1171 | " exceeds TCM/SE_Device TCQ: %u\n", |
| 1172 | dev, queue_depth, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1173 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth); |
| 1174 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1175 | } |
| 1176 | } else { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1177 | if (queue_depth > dev->se_sub_dev->se_dev_attrib.queue_depth) { |
| 1178 | 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] | 1179 | pr_err("dev[%p]: Passed queue_depth:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1180 | " %u exceeds TCM/SE_Device MAX" |
| 1181 | " TCQ: %u\n", dev, queue_depth, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1182 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth); |
| 1183 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1184 | } |
| 1185 | } |
| 1186 | } |
| 1187 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1188 | dev->se_sub_dev->se_dev_attrib.queue_depth = dev->queue_depth = queue_depth; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1189 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1190 | dev, queue_depth); |
| 1191 | return 0; |
| 1192 | } |
| 1193 | |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 1194 | int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors) |
| 1195 | { |
| 1196 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
| 1197 | pr_err("dev[%p]: Unable to change SE Device" |
| 1198 | " fabric_max_sectors while dev_export_obj: %d count exists\n", |
| 1199 | dev, atomic_read(&dev->dev_export_obj.obj_access_count)); |
| 1200 | return -EINVAL; |
| 1201 | } |
| 1202 | if (!fabric_max_sectors) { |
| 1203 | pr_err("dev[%p]: Illegal ZERO value for" |
| 1204 | " fabric_max_sectors\n", dev); |
| 1205 | return -EINVAL; |
| 1206 | } |
| 1207 | if (fabric_max_sectors < DA_STATUS_MAX_SECTORS_MIN) { |
| 1208 | pr_err("dev[%p]: Passed fabric_max_sectors: %u less than" |
| 1209 | " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, fabric_max_sectors, |
| 1210 | DA_STATUS_MAX_SECTORS_MIN); |
| 1211 | return -EINVAL; |
| 1212 | } |
| 1213 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
| 1214 | if (fabric_max_sectors > dev->se_sub_dev->se_dev_attrib.hw_max_sectors) { |
| 1215 | pr_err("dev[%p]: Passed fabric_max_sectors: %u" |
| 1216 | " greater than TCM/SE_Device max_sectors:" |
| 1217 | " %u\n", dev, fabric_max_sectors, |
| 1218 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors); |
| 1219 | return -EINVAL; |
| 1220 | } |
| 1221 | } else { |
| 1222 | if (fabric_max_sectors > DA_STATUS_MAX_SECTORS_MAX) { |
| 1223 | pr_err("dev[%p]: Passed fabric_max_sectors: %u" |
| 1224 | " greater than DA_STATUS_MAX_SECTORS_MAX:" |
| 1225 | " %u\n", dev, fabric_max_sectors, |
| 1226 | DA_STATUS_MAX_SECTORS_MAX); |
| 1227 | return -EINVAL; |
| 1228 | } |
| 1229 | } |
| 1230 | /* |
| 1231 | * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() |
| 1232 | */ |
| 1233 | fabric_max_sectors = se_dev_align_max_sectors(fabric_max_sectors, |
| 1234 | dev->se_sub_dev->se_dev_attrib.block_size); |
| 1235 | |
| 1236 | dev->se_sub_dev->se_dev_attrib.fabric_max_sectors = fabric_max_sectors; |
| 1237 | pr_debug("dev[%p]: SE Device max_sectors changed to %u\n", |
| 1238 | dev, fabric_max_sectors); |
| 1239 | return 0; |
| 1240 | } |
| 1241 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1242 | int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) |
| 1243 | { |
| 1244 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1245 | pr_err("dev[%p]: Unable to change SE Device" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1246 | " optimal_sectors while dev_export_obj: %d count exists\n", |
| 1247 | dev, atomic_read(&dev->dev_export_obj.obj_access_count)); |
| 1248 | return -EINVAL; |
| 1249 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1250 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1251 | pr_err("dev[%p]: Passed optimal_sectors cannot be" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1252 | " changed for TCM/pSCSI\n", dev); |
| 1253 | return -EINVAL; |
| 1254 | } |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 1255 | if (optimal_sectors > dev->se_sub_dev->se_dev_attrib.fabric_max_sectors) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1256 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 1257 | " greater than fabric_max_sectors: %u\n", dev, |
| 1258 | optimal_sectors, dev->se_sub_dev->se_dev_attrib.fabric_max_sectors); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1259 | return -EINVAL; |
| 1260 | } |
| 1261 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1262 | dev->se_sub_dev->se_dev_attrib.optimal_sectors = optimal_sectors; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1263 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1264 | dev, optimal_sectors); |
| 1265 | return 0; |
| 1266 | } |
| 1267 | |
| 1268 | int se_dev_set_block_size(struct se_device *dev, u32 block_size) |
| 1269 | { |
| 1270 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1271 | pr_err("dev[%p]: Unable to change SE Device block_size" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1272 | " while dev_export_obj: %d count exists\n", dev, |
| 1273 | atomic_read(&dev->dev_export_obj.obj_access_count)); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1274 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1275 | } |
| 1276 | |
| 1277 | if ((block_size != 512) && |
| 1278 | (block_size != 1024) && |
| 1279 | (block_size != 2048) && |
| 1280 | (block_size != 4096)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1281 | pr_err("dev[%p]: Illegal value for block_device: %u" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1282 | " for SE device, must be 512, 1024, 2048 or 4096\n", |
| 1283 | dev, block_size); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1284 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1285 | } |
| 1286 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1287 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1288 | pr_err("dev[%p]: Not allowed to change block_size for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1289 | " Physical Device, use for Linux/SCSI to change" |
| 1290 | " block_size for underlying hardware\n", dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1291 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1292 | } |
| 1293 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1294 | dev->se_sub_dev->se_dev_attrib.block_size = block_size; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1295 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1296 | dev, block_size); |
| 1297 | return 0; |
| 1298 | } |
| 1299 | |
| 1300 | struct se_lun *core_dev_add_lun( |
| 1301 | struct se_portal_group *tpg, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1302 | struct se_device *dev, |
| 1303 | u32 lun) |
| 1304 | { |
| 1305 | struct se_lun *lun_p; |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 1306 | int rc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1307 | |
| 1308 | if (atomic_read(&dev->dev_access_obj.obj_access_count) != 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1309 | 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] | 1310 | atomic_read(&dev->dev_access_obj.obj_access_count)); |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 1311 | return ERR_PTR(-EACCES); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1312 | } |
| 1313 | |
| 1314 | lun_p = core_tpg_pre_addlun(tpg, lun); |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 1315 | if (IS_ERR(lun_p)) |
| 1316 | return lun_p; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1317 | |
Nicholas Bellinger | 58d9261 | 2012-03-20 21:26:48 -0700 | [diff] [blame] | 1318 | rc = core_tpg_post_addlun(tpg, lun_p, |
| 1319 | TRANSPORT_LUNFLAGS_READ_WRITE, dev); |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 1320 | if (rc < 0) |
| 1321 | return ERR_PTR(rc); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1322 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1323 | pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1324 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1325 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun, |
Andy Grover | 2dca673 | 2012-07-12 17:34:55 -0700 | [diff] [blame] | 1326 | tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1327 | /* |
| 1328 | * Update LUN maps for dynamically added initiators when |
| 1329 | * generate_node_acl is enabled. |
| 1330 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1331 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1332 | struct se_node_acl *acl; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1333 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1334 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 1335 | if (acl->dynamic_node_acl && |
| 1336 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || |
| 1337 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1338 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1339 | core_tpg_add_node_to_devs(acl, tpg); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1340 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1341 | } |
| 1342 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1343 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1344 | } |
| 1345 | |
| 1346 | return lun_p; |
| 1347 | } |
| 1348 | |
| 1349 | /* core_dev_del_lun(): |
| 1350 | * |
| 1351 | * |
| 1352 | */ |
| 1353 | int core_dev_del_lun( |
| 1354 | struct se_portal_group *tpg, |
| 1355 | u32 unpacked_lun) |
| 1356 | { |
| 1357 | struct se_lun *lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1358 | |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 1359 | lun = core_tpg_pre_dellun(tpg, unpacked_lun); |
| 1360 | if (IS_ERR(lun)) |
| 1361 | return PTR_ERR(lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1362 | |
| 1363 | core_tpg_post_dellun(tpg, lun); |
| 1364 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1365 | pr_debug("%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1366 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1367 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, |
| 1368 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1369 | |
| 1370 | return 0; |
| 1371 | } |
| 1372 | |
| 1373 | struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) |
| 1374 | { |
| 1375 | struct se_lun *lun; |
| 1376 | |
| 1377 | spin_lock(&tpg->tpg_lun_lock); |
| 1378 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1379 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1380 | "_PER_TPG-1: %u for Target Portal Group: %hu\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1381 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1382 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1383 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1384 | spin_unlock(&tpg->tpg_lun_lock); |
| 1385 | return NULL; |
| 1386 | } |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 1387 | lun = tpg->tpg_lun_list[unpacked_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1388 | |
| 1389 | if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1390 | pr_err("%s Logical Unit Number: %u is not free on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1391 | " Target Portal Group: %hu, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1392 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
| 1393 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1394 | spin_unlock(&tpg->tpg_lun_lock); |
| 1395 | return NULL; |
| 1396 | } |
| 1397 | spin_unlock(&tpg->tpg_lun_lock); |
| 1398 | |
| 1399 | return lun; |
| 1400 | } |
| 1401 | |
| 1402 | /* core_dev_get_lun(): |
| 1403 | * |
| 1404 | * |
| 1405 | */ |
| 1406 | static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) |
| 1407 | { |
| 1408 | struct se_lun *lun; |
| 1409 | |
| 1410 | spin_lock(&tpg->tpg_lun_lock); |
| 1411 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1412 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1413 | "_TPG-1: %u for Target Portal Group: %hu\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1414 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1415 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1416 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1417 | spin_unlock(&tpg->tpg_lun_lock); |
| 1418 | return NULL; |
| 1419 | } |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 1420 | lun = tpg->tpg_lun_list[unpacked_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1421 | |
| 1422 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1423 | pr_err("%s Logical Unit Number: %u is not active on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1424 | " Target Portal Group: %hu, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1425 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
| 1426 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1427 | spin_unlock(&tpg->tpg_lun_lock); |
| 1428 | return NULL; |
| 1429 | } |
| 1430 | spin_unlock(&tpg->tpg_lun_lock); |
| 1431 | |
| 1432 | return lun; |
| 1433 | } |
| 1434 | |
| 1435 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( |
| 1436 | struct se_portal_group *tpg, |
| 1437 | u32 mapped_lun, |
| 1438 | char *initiatorname, |
| 1439 | int *ret) |
| 1440 | { |
| 1441 | struct se_lun_acl *lacl; |
| 1442 | struct se_node_acl *nacl; |
| 1443 | |
Dan Carpenter | 60d645a | 2011-06-15 10:03:05 -0700 | [diff] [blame] | 1444 | if (strlen(initiatorname) >= TRANSPORT_IQN_LEN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1445 | pr_err("%s InitiatorName exceeds maximum size.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1446 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1447 | *ret = -EOVERFLOW; |
| 1448 | return NULL; |
| 1449 | } |
| 1450 | nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1451 | if (!nacl) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1452 | *ret = -EINVAL; |
| 1453 | return NULL; |
| 1454 | } |
| 1455 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1456 | if (!lacl) { |
| 1457 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1458 | *ret = -ENOMEM; |
| 1459 | return NULL; |
| 1460 | } |
| 1461 | |
| 1462 | INIT_LIST_HEAD(&lacl->lacl_list); |
| 1463 | lacl->mapped_lun = mapped_lun; |
| 1464 | lacl->se_lun_nacl = nacl; |
| 1465 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); |
| 1466 | |
| 1467 | return lacl; |
| 1468 | } |
| 1469 | |
| 1470 | int core_dev_add_initiator_node_lun_acl( |
| 1471 | struct se_portal_group *tpg, |
| 1472 | struct se_lun_acl *lacl, |
| 1473 | u32 unpacked_lun, |
| 1474 | u32 lun_access) |
| 1475 | { |
| 1476 | struct se_lun *lun; |
| 1477 | struct se_node_acl *nacl; |
| 1478 | |
| 1479 | lun = core_dev_get_lun(tpg, unpacked_lun); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1480 | if (!lun) { |
| 1481 | pr_err("%s Logical Unit Number: %u is not active on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1482 | " Target Portal Group: %hu, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1483 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
| 1484 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1485 | return -EINVAL; |
| 1486 | } |
| 1487 | |
| 1488 | nacl = lacl->se_lun_nacl; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1489 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1490 | return -EINVAL; |
| 1491 | |
| 1492 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && |
| 1493 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) |
| 1494 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 1495 | |
| 1496 | lacl->se_lun = lun; |
| 1497 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 1498 | if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, |
| 1499 | lun_access, nacl, tpg) < 0) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1500 | return -EINVAL; |
| 1501 | |
| 1502 | spin_lock(&lun->lun_acl_lock); |
| 1503 | list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); |
| 1504 | atomic_inc(&lun->lun_acl_count); |
| 1505 | smp_mb__after_atomic_inc(); |
| 1506 | spin_unlock(&lun->lun_acl_lock); |
| 1507 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1508 | pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1509 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1510 | 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] | 1511 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
| 1512 | lacl->initiatorname); |
| 1513 | /* |
| 1514 | * Check to see if there are any existing persistent reservation APTPL |
| 1515 | * pre-registrations that need to be enabled for this LUN ACL.. |
| 1516 | */ |
| 1517 | core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl); |
| 1518 | return 0; |
| 1519 | } |
| 1520 | |
| 1521 | /* core_dev_del_initiator_node_lun_acl(): |
| 1522 | * |
| 1523 | * |
| 1524 | */ |
| 1525 | int core_dev_del_initiator_node_lun_acl( |
| 1526 | struct se_portal_group *tpg, |
| 1527 | struct se_lun *lun, |
| 1528 | struct se_lun_acl *lacl) |
| 1529 | { |
| 1530 | struct se_node_acl *nacl; |
| 1531 | |
| 1532 | nacl = lacl->se_lun_nacl; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1533 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1534 | return -EINVAL; |
| 1535 | |
| 1536 | spin_lock(&lun->lun_acl_lock); |
| 1537 | list_del(&lacl->lacl_list); |
| 1538 | atomic_dec(&lun->lun_acl_count); |
| 1539 | smp_mb__after_atomic_dec(); |
| 1540 | spin_unlock(&lun->lun_acl_lock); |
| 1541 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 1542 | core_disable_device_list_for_node(lun, NULL, lacl->mapped_lun, |
| 1543 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1544 | |
| 1545 | lacl->se_lun = NULL; |
| 1546 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1547 | pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1548 | " InitiatorNode: %s Mapped LUN: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1549 | tpg->se_tpg_tfo->get_fabric_name(), |
| 1550 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1551 | lacl->initiatorname, lacl->mapped_lun); |
| 1552 | |
| 1553 | return 0; |
| 1554 | } |
| 1555 | |
| 1556 | void core_dev_free_initiator_node_lun_acl( |
| 1557 | struct se_portal_group *tpg, |
| 1558 | struct se_lun_acl *lacl) |
| 1559 | { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1560 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1561 | " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1562 | tpg->se_tpg_tfo->tpg_get_tag(tpg), |
| 1563 | tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1564 | lacl->initiatorname, lacl->mapped_lun); |
| 1565 | |
| 1566 | kfree(lacl); |
| 1567 | } |
| 1568 | |
| 1569 | int core_dev_setup_virtual_lun0(void) |
| 1570 | { |
| 1571 | struct se_hba *hba; |
| 1572 | struct se_device *dev; |
| 1573 | struct se_subsystem_dev *se_dev = NULL; |
| 1574 | struct se_subsystem_api *t; |
| 1575 | char buf[16]; |
| 1576 | int ret; |
| 1577 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1578 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1579 | if (IS_ERR(hba)) |
| 1580 | return PTR_ERR(hba); |
| 1581 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1582 | lun0_hba = hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1583 | t = hba->transport; |
| 1584 | |
| 1585 | se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1586 | if (!se_dev) { |
| 1587 | pr_err("Unable to allocate memory for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1588 | " struct se_subsystem_dev\n"); |
| 1589 | ret = -ENOMEM; |
| 1590 | goto out; |
| 1591 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1592 | INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); |
| 1593 | spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1594 | INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); |
| 1595 | INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); |
| 1596 | spin_lock_init(&se_dev->t10_pr.registration_lock); |
| 1597 | spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1598 | INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); |
| 1599 | spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); |
| 1600 | spin_lock_init(&se_dev->se_dev_lock); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1601 | se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1602 | se_dev->t10_wwn.t10_sub_dev = se_dev; |
| 1603 | se_dev->t10_alua.t10_sub_dev = se_dev; |
| 1604 | se_dev->se_dev_attrib.da_sub_dev = se_dev; |
| 1605 | se_dev->se_dev_hba = hba; |
| 1606 | |
| 1607 | se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, "virt_lun0"); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1608 | if (!se_dev->se_dev_su_ptr) { |
| 1609 | pr_err("Unable to locate subsystem dependent pointer" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1610 | " from allocate_virtdevice()\n"); |
| 1611 | ret = -ENOMEM; |
| 1612 | goto out; |
| 1613 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1614 | lun0_su_dev = se_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1615 | |
| 1616 | memset(buf, 0, 16); |
| 1617 | sprintf(buf, "rd_pages=8"); |
| 1618 | t->set_configfs_dev_params(hba, se_dev, buf, sizeof(buf)); |
| 1619 | |
| 1620 | 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] | 1621 | if (IS_ERR(dev)) { |
| 1622 | ret = PTR_ERR(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1623 | goto out; |
| 1624 | } |
| 1625 | se_dev->se_dev_ptr = dev; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1626 | g_lun0_dev = dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1627 | |
| 1628 | return 0; |
| 1629 | out: |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1630 | lun0_su_dev = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1631 | kfree(se_dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1632 | if (lun0_hba) { |
| 1633 | core_delete_hba(lun0_hba); |
| 1634 | lun0_hba = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1635 | } |
| 1636 | return ret; |
| 1637 | } |
| 1638 | |
| 1639 | |
| 1640 | void core_dev_release_virtual_lun0(void) |
| 1641 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1642 | struct se_hba *hba = lun0_hba; |
| 1643 | struct se_subsystem_dev *su_dev = lun0_su_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1644 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1645 | if (!hba) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1646 | return; |
| 1647 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1648 | if (g_lun0_dev) |
| 1649 | se_free_virtual_device(g_lun0_dev, hba); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1650 | |
| 1651 | kfree(su_dev); |
| 1652 | core_delete_hba(hba); |
| 1653 | } |