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drivers/target/target_core_device.c
29.2 KB
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/******************************************************************************* * Filename: target_core_device.c (based on iscsi_target_device.c) * |
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* This file contains the TCM Virtual Device and Disk Transport |
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* agnostic related functions. * |
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* (c) Copyright 2003-2013 Datera, Inc. |
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* * Nicholas A. Bellinger <nab@kernel.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ******************************************************************************/ #include <linux/net.h> #include <linux/string.h> #include <linux/delay.h> #include <linux/timer.h> #include <linux/slab.h> #include <linux/spinlock.h> |
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#include <linux/kthread.h> #include <linux/in.h> |
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#include <linux/export.h> |
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#include <asm/unaligned.h> |
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#include <net/sock.h> #include <net/tcp.h> |
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#include <scsi/scsi_common.h> #include <scsi/scsi_proto.h> |
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#include <target/target_core_base.h> |
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#include <target/target_core_backend.h> #include <target/target_core_fabric.h> |
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|
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#include "target_core_internal.h" |
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#include "target_core_alua.h" |
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#include "target_core_pr.h" #include "target_core_ua.h" |
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DEFINE_MUTEX(g_device_mutex); LIST_HEAD(g_device_list); |
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static struct se_hba *lun0_hba; |
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/* not static, needed by tpg.c */ struct se_device *g_lun0_dev; |
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sense_reason_t |
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transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun) |
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{ |
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struct se_lun *se_lun = NULL; |
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struct se_session *se_sess = se_cmd->se_sess; |
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struct se_node_acl *nacl = se_sess->se_node_acl; |
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struct se_dev_entry *deve; |
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sense_reason_t ret = TCM_NO_SENSE; |
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|
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rcu_read_lock(); deve = target_nacl_find_deve(nacl, unpacked_lun); if (deve) { atomic_long_inc(&deve->total_cmds); |
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|
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if (se_cmd->data_direction == DMA_TO_DEVICE) |
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atomic_long_add(se_cmd->data_length, &deve->write_bytes); |
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else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
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atomic_long_add(se_cmd->data_length, &deve->read_bytes); |
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|
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se_lun = rcu_dereference(deve->se_lun); se_cmd->se_lun = rcu_dereference(deve->se_lun); |
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se_cmd->pr_res_key = deve->pr_res_key; se_cmd->orig_fe_lun = unpacked_lun; |
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se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
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percpu_ref_get(&se_lun->lun_ref); se_cmd->lun_ref_active = true; |
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if ((se_cmd->data_direction == DMA_TO_DEVICE) && |
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deve->lun_access_ro) { |
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pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" " Access for 0x%08llx ", se_cmd->se_tfo->get_fabric_name(), unpacked_lun); rcu_read_unlock(); ret = TCM_WRITE_PROTECTED; goto ref_dev; } |
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} |
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rcu_read_unlock(); |
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if (!se_lun) { |
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/* * Use the se_portal_group->tpg_virt_lun0 to allow for * REPORT_LUNS, et al to be returned when no active * MappedLUN=0 exists for this Initiator Port. */ if (unpacked_lun != 0) { |
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pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
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" Access for 0x%08llx ", |
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se_cmd->se_tfo->get_fabric_name(), |
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unpacked_lun); |
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return TCM_NON_EXISTENT_LUN; |
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} |
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|
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se_lun = se_sess->se_tpg->tpg_virt_lun0; se_cmd->se_lun = se_sess->se_tpg->tpg_virt_lun0; |
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se_cmd->orig_fe_lun = 0; |
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se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
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percpu_ref_get(&se_lun->lun_ref); se_cmd->lun_ref_active = true; |
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/* * Force WRITE PROTECT for virtual LUN 0 */ if ((se_cmd->data_direction != DMA_FROM_DEVICE) && (se_cmd->data_direction != DMA_NONE)) { ret = TCM_WRITE_PROTECTED; goto ref_dev; } |
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} |
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/* * RCU reference protected by percpu se_lun->lun_ref taken above that * must drop to zero (including initial reference) before this se_lun * pointer can be kfree_rcu() by the final se_lun->lun_group put via * target_core_fabric_configfs.c:target_fabric_port_release */ |
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ref_dev: |
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se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev); atomic_long_inc(&se_cmd->se_dev->num_cmds); |
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|
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if (se_cmd->data_direction == DMA_TO_DEVICE) |
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atomic_long_add(se_cmd->data_length, &se_cmd->se_dev->write_bytes); |
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else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
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atomic_long_add(se_cmd->data_length, &se_cmd->se_dev->read_bytes); |
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|
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return ret; |
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} |
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EXPORT_SYMBOL(transport_lookup_cmd_lun); |
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|
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int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u64 unpacked_lun) |
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{ |
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struct se_dev_entry *deve; struct se_lun *se_lun = NULL; |
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struct se_session *se_sess = se_cmd->se_sess; |
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struct se_node_acl *nacl = se_sess->se_node_acl; |
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struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
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unsigned long flags; |
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|
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rcu_read_lock(); deve = target_nacl_find_deve(nacl, unpacked_lun); if (deve) { se_tmr->tmr_lun = rcu_dereference(deve->se_lun); se_cmd->se_lun = rcu_dereference(deve->se_lun); se_lun = rcu_dereference(deve->se_lun); |
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se_cmd->pr_res_key = deve->pr_res_key; se_cmd->orig_fe_lun = unpacked_lun; |
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} |
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rcu_read_unlock(); |
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if (!se_lun) { |
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pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
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" Access for 0x%08llx ", |
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se_cmd->se_tfo->get_fabric_name(), |
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unpacked_lun); |
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return -ENODEV; |
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} |
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/* * XXX: Add percpu se_lun->lun_ref reference count for TMR */ se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev); se_tmr->tmr_dev = rcu_dereference_raw(se_lun->lun_se_dev); |
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|
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spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
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list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list); |
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spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
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return 0; } |
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EXPORT_SYMBOL(transport_lookup_tmr_lun); |
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|
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bool target_lun_is_rdonly(struct se_cmd *cmd) { struct se_session *se_sess = cmd->se_sess; struct se_dev_entry *deve; bool ret; |
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rcu_read_lock(); deve = target_nacl_find_deve(se_sess->se_node_acl, cmd->orig_fe_lun); |
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ret = deve && deve->lun_access_ro; |
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rcu_read_unlock(); return ret; } EXPORT_SYMBOL(target_lun_is_rdonly); |
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/* * This function is called from core_scsi3_emulate_pro_register_and_move() |
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* and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_kref |
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* when a matching rtpi is found. */ struct se_dev_entry *core_get_se_deve_from_rtpi( struct se_node_acl *nacl, u16 rtpi) { struct se_dev_entry *deve; struct se_lun *lun; |
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struct se_portal_group *tpg = nacl->se_tpg; |
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|
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rcu_read_lock(); hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { lun = rcu_dereference(deve->se_lun); |
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if (!lun) { pr_err("%s device entries device pointer is" |
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" NULL, but Initiator has access. ", |
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tpg->se_tpg_tfo->get_fabric_name()); |
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continue; } |
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if (lun->lun_rtpi != rtpi) |
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continue; |
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kref_get(&deve->pr_kref); rcu_read_unlock(); |
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return deve; } |
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rcu_read_unlock(); |
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return NULL; } |
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void core_free_device_list_for_node( |
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struct se_node_acl *nacl, struct se_portal_group *tpg) { struct se_dev_entry *deve; |
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|
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mutex_lock(&nacl->lun_entry_mutex); hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { struct se_lun *lun = rcu_dereference_check(deve->se_lun, lockdep_is_held(&nacl->lun_entry_mutex)); core_disable_device_list_for_node(lun, deve, nacl, tpg); |
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} |
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mutex_unlock(&nacl->lun_entry_mutex); |
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} |
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void core_update_device_list_access( |
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u64 mapped_lun, |
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bool lun_access_ro, |
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struct se_node_acl *nacl) { struct se_dev_entry *deve; |
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mutex_lock(&nacl->lun_entry_mutex); deve = target_nacl_find_deve(nacl, mapped_lun); |
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if (deve) deve->lun_access_ro = lun_access_ro; |
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mutex_unlock(&nacl->lun_entry_mutex); |
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} |
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/* * Called with rcu_read_lock or nacl->device_list_lock held. |
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*/ |
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struct se_dev_entry *target_nacl_find_deve(struct se_node_acl *nacl, u64 mapped_lun) |
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{ struct se_dev_entry *deve; hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) if (deve->mapped_lun == mapped_lun) return deve; return NULL; } EXPORT_SYMBOL(target_nacl_find_deve); void target_pr_kref_release(struct kref *kref) { struct se_dev_entry *deve = container_of(kref, struct se_dev_entry, pr_kref); complete(&deve->pr_comp); |
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} |
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static void target_luns_data_has_changed(struct se_node_acl *nacl, struct se_dev_entry *new, bool skip_new) { struct se_dev_entry *tmp; rcu_read_lock(); hlist_for_each_entry_rcu(tmp, &nacl->lun_entry_hlist, link) { if (skip_new && tmp == new) continue; core_scsi3_ua_allocate(tmp, 0x3F, ASCQ_3FH_REPORTED_LUNS_DATA_HAS_CHANGED); } rcu_read_unlock(); } |
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int core_enable_device_list_for_node( |
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struct se_lun *lun, struct se_lun_acl *lun_acl, |
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u64 mapped_lun, |
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bool lun_access_ro, |
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struct se_node_acl *nacl, |
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struct se_portal_group *tpg) |
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{ |
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struct se_dev_entry *orig, *new; |
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|
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new = kzalloc(sizeof(*new), GFP_KERNEL); if (!new) { pr_err("Unable to allocate se_dev_entry memory "); return -ENOMEM; } |
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|
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atomic_set(&new->ua_count, 0); spin_lock_init(&new->ua_lock); |
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INIT_LIST_HEAD(&new->ua_list); |
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INIT_LIST_HEAD(&new->lun_link); |
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|
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new->mapped_lun = mapped_lun; kref_init(&new->pr_kref); init_completion(&new->pr_comp); |
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new->lun_access_ro = lun_access_ro; |
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new->creation_time = get_jiffies_64(); new->attach_count++; mutex_lock(&nacl->lun_entry_mutex); orig = target_nacl_find_deve(nacl, mapped_lun); if (orig && orig->se_lun) { struct se_lun *orig_lun = rcu_dereference_check(orig->se_lun, lockdep_is_held(&nacl->lun_entry_mutex)); if (orig_lun != lun) { pr_err("Existing orig->se_lun doesn't match new lun" " for dynamic -> explicit NodeACL conversion:" " %s ", nacl->initiatorname); mutex_unlock(&nacl->lun_entry_mutex); kfree(new); |
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return -EINVAL; |
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} |
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if (orig->se_lun_acl != NULL) { pr_warn_ratelimited("Detected existing explicit" " se_lun_acl->se_lun_group reference for %s" " mapped_lun: %llu, failing ", nacl->initiatorname, mapped_lun); mutex_unlock(&nacl->lun_entry_mutex); kfree(new); return -EINVAL; } |
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|
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rcu_assign_pointer(new->se_lun, lun); rcu_assign_pointer(new->se_lun_acl, lun_acl); hlist_del_rcu(&orig->link); hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); mutex_unlock(&nacl->lun_entry_mutex); |
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|
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spin_lock(&lun->lun_deve_lock); |
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list_del(&orig->lun_link); list_add_tail(&new->lun_link, &lun->lun_deve_list); |
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spin_unlock(&lun->lun_deve_lock); |
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|
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kref_put(&orig->pr_kref, target_pr_kref_release); wait_for_completion(&orig->pr_comp); |
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|
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target_luns_data_has_changed(nacl, new, true); |
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kfree_rcu(orig, rcu_head); return 0; |
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} |
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|
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rcu_assign_pointer(new->se_lun, lun); rcu_assign_pointer(new->se_lun_acl, lun_acl); hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); mutex_unlock(&nacl->lun_entry_mutex); |
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spin_lock(&lun->lun_deve_lock); |
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list_add_tail(&new->lun_link, &lun->lun_deve_list); |
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spin_unlock(&lun->lun_deve_lock); |
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|
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386 |
target_luns_data_has_changed(nacl, new, true); |
e80ac6c4c target: refactor ... |
387 388 |
return 0; } |
29a05deeb target: Convert s... |
389 390 |
/* * Called with se_node_acl->lun_entry_mutex held. |
e80ac6c4c target: refactor ... |
391 |
*/ |
29a05deeb target: Convert s... |
392 |
void core_disable_device_list_for_node( |
e80ac6c4c target: refactor ... |
393 |
struct se_lun *lun, |
29a05deeb target: Convert s... |
394 |
struct se_dev_entry *orig, |
e80ac6c4c target: refactor ... |
395 396 397 |
struct se_node_acl *nacl, struct se_portal_group *tpg) { |
e80ac6c4c target: refactor ... |
398 |
/* |
4cc987eaf target: Drop lun_... |
399 400 401 402 |
* rcu_dereference_raw protected by se_lun->lun_group symlink * reference to se_device->dev_group. */ struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev); |
e80ac6c4c target: refactor ... |
403 404 |
/* * If the MappedLUN entry is being disabled, the entry in |
adf653f92 target: Subsume s... |
405 |
* lun->lun_deve_list must be removed now before clearing the |
e80ac6c4c target: refactor ... |
406 407 408 409 410 |
* struct se_dev_entry pointers below as logic in * core_alua_do_transition_tg_pt() depends on these being present. * * deve->se_lun_acl will be NULL for demo-mode created LUNs * that have not been explicitly converted to MappedLUNs -> |
adf653f92 target: Subsume s... |
411 412 |
* struct se_lun_acl, but we remove deve->lun_link from * lun->lun_deve_list. This also means that active UAs and |
e80ac6c4c target: refactor ... |
413 414 415 |
* NodeACL context specific PR metadata for demo-mode * MappedLUN *deve will be released below.. */ |
1adff1b3a target: Convert s... |
416 |
spin_lock(&lun->lun_deve_lock); |
adf653f92 target: Subsume s... |
417 |
list_del(&orig->lun_link); |
1adff1b3a target: Convert s... |
418 |
spin_unlock(&lun->lun_deve_lock); |
c66ac9db8 [SCSI] target: Ad... |
419 |
/* |
29a05deeb target: Convert s... |
420 |
* Disable struct se_dev_entry LUN ACL mapping |
c66ac9db8 [SCSI] target: Ad... |
421 |
*/ |
29a05deeb target: Convert s... |
422 423 424 |
core_scsi3_ua_release_all(orig); hlist_del_rcu(&orig->link); |
80bfdfa92 target/pr: Use at... |
425 |
clear_bit(DEF_PR_REG_ACTIVE, &orig->deve_flags); |
03a68b44f target: Remove en... |
426 |
orig->lun_access_ro = false; |
29a05deeb target: Convert s... |
427 428 |
orig->creation_time = 0; orig->attach_count--; |
c66ac9db8 [SCSI] target: Ad... |
429 |
/* |
29a05deeb target: Convert s... |
430 431 |
* Before firing off RCU callback, wait for any in process SPEC_I_PT=1 * or REGISTER_AND_MOVE PR operation to complete. |
c66ac9db8 [SCSI] target: Ad... |
432 |
*/ |
29a05deeb target: Convert s... |
433 434 |
kref_put(&orig->pr_kref, target_pr_kref_release); wait_for_completion(&orig->pr_comp); |
3ccd6e83d target: Fix PR re... |
435 436 |
rcu_assign_pointer(orig->se_lun, NULL); rcu_assign_pointer(orig->se_lun_acl, NULL); |
29a05deeb target: Convert s... |
437 |
kfree_rcu(orig, rcu_head); |
c66ac9db8 [SCSI] target: Ad... |
438 |
|
4cc987eaf target: Drop lun_... |
439 |
core_scsi3_free_pr_reg_from_nacl(dev, nacl); |
7c0d0d51d target: Send UA w... |
440 |
target_luns_data_has_changed(nacl, NULL, false); |
c66ac9db8 [SCSI] target: Ad... |
441 442 443 444 445 446 447 448 449 450 |
} /* core_clear_lun_from_tpg(): * * */ void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) { struct se_node_acl *nacl; struct se_dev_entry *deve; |
c66ac9db8 [SCSI] target: Ad... |
451 |
|
403edd78a target: Convert s... |
452 |
mutex_lock(&tpg->acl_node_mutex); |
c66ac9db8 [SCSI] target: Ad... |
453 |
list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
c66ac9db8 [SCSI] target: Ad... |
454 |
|
29a05deeb target: Convert s... |
455 456 457 458 |
mutex_lock(&nacl->lun_entry_mutex); hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { struct se_lun *tmp_lun = rcu_dereference_check(deve->se_lun, lockdep_is_held(&nacl->lun_entry_mutex)); |
c66ac9db8 [SCSI] target: Ad... |
459 |
|
29a05deeb target: Convert s... |
460 461 |
if (lun != tmp_lun) continue; |
c66ac9db8 [SCSI] target: Ad... |
462 |
|
29a05deeb target: Convert s... |
463 |
core_disable_device_list_for_node(lun, deve, nacl, tpg); |
c66ac9db8 [SCSI] target: Ad... |
464 |
} |
29a05deeb target: Convert s... |
465 |
mutex_unlock(&nacl->lun_entry_mutex); |
c66ac9db8 [SCSI] target: Ad... |
466 |
} |
403edd78a target: Convert s... |
467 |
mutex_unlock(&tpg->acl_node_mutex); |
c66ac9db8 [SCSI] target: Ad... |
468 |
} |
adf653f92 target: Subsume s... |
469 |
int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev) |
c66ac9db8 [SCSI] target: Ad... |
470 |
{ |
adf653f92 target: Subsume s... |
471 |
struct se_lun *tmp; |
c66ac9db8 [SCSI] target: Ad... |
472 473 |
spin_lock(&dev->se_port_lock); |
adf653f92 target: Subsume s... |
474 |
if (dev->export_count == 0x0000ffff) { |
6708bb27b target: Follow up... |
475 |
pr_warn("Reached dev->dev_port_count ==" |
c66ac9db8 [SCSI] target: Ad... |
476 477 478 |
" 0x0000ffff "); spin_unlock(&dev->se_port_lock); |
adf653f92 target: Subsume s... |
479 |
return -ENOSPC; |
c66ac9db8 [SCSI] target: Ad... |
480 481 482 |
} again: /* |
35d1efe80 target: Fix minor... |
483 |
* Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device |
c66ac9db8 [SCSI] target: Ad... |
484 485 486 487 488 489 490 491 492 493 |
* Here is the table from spc4r17 section 7.7.3.8. * * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field * * Code Description * 0h Reserved * 1h Relative port 1, historically known as port A * 2h Relative port 2, historically known as port B * 3h to FFFFh Relative port 3 through 65 535 */ |
adf653f92 target: Subsume s... |
494 495 |
lun->lun_rtpi = dev->dev_rpti_counter++; if (!lun->lun_rtpi) |
c66ac9db8 [SCSI] target: Ad... |
496 |
goto again; |
adf653f92 target: Subsume s... |
497 |
list_for_each_entry(tmp, &dev->dev_sep_list, lun_dev_link) { |
c66ac9db8 [SCSI] target: Ad... |
498 |
/* |
35d1efe80 target: Fix minor... |
499 |
* Make sure RELATIVE TARGET PORT IDENTIFIER is unique |
c66ac9db8 [SCSI] target: Ad... |
500 501 |
* for 16-bit wrap.. */ |
adf653f92 target: Subsume s... |
502 |
if (lun->lun_rtpi == tmp->lun_rtpi) |
c66ac9db8 [SCSI] target: Ad... |
503 504 505 |
goto again; } spin_unlock(&dev->se_port_lock); |
c66ac9db8 [SCSI] target: Ad... |
506 507 |
return 0; } |
0fd97ccf4 target: kill stru... |
508 |
static void se_release_vpd_for_dev(struct se_device *dev) |
c66ac9db8 [SCSI] target: Ad... |
509 510 |
{ struct t10_vpd *vpd, *vpd_tmp; |
0fd97ccf4 target: kill stru... |
511 |
spin_lock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db8 [SCSI] target: Ad... |
512 |
list_for_each_entry_safe(vpd, vpd_tmp, |
0fd97ccf4 target: kill stru... |
513 |
&dev->t10_wwn.t10_vpd_list, vpd_list) { |
c66ac9db8 [SCSI] target: Ad... |
514 515 516 |
list_del(&vpd->vpd_list); kfree(vpd); } |
0fd97ccf4 target: kill stru... |
517 |
spin_unlock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db8 [SCSI] target: Ad... |
518 |
} |
c8045372d target: Make unne... |
519 |
static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
525a48a21 target: Fix task ... |
520 |
{ |
3e03989b5 target: Avoid int... |
521 522 |
u32 aligned_max_sectors; u32 alignment; |
525a48a21 target: Fix task ... |
523 524 525 526 |
/* * Limit max_sectors to a PAGE_SIZE aligned value for modern * transport_allocate_data_tasks() operation. */ |
3e03989b5 target: Avoid int... |
527 528 529 530 531 532 533 |
alignment = max(1ul, PAGE_SIZE / block_size); aligned_max_sectors = rounddown(max_sectors, alignment); if (max_sectors != aligned_max_sectors) pr_info("Rounding down aligned max_sectors from %u to %u ", max_sectors, aligned_max_sectors); |
525a48a21 target: Fix task ... |
534 |
|
3e03989b5 target: Avoid int... |
535 |
return aligned_max_sectors; |
525a48a21 target: Fix task ... |
536 |
} |
6bb826121 target: Convert s... |
537 |
int core_dev_add_lun( |
c66ac9db8 [SCSI] target: Ad... |
538 |
struct se_portal_group *tpg, |
c66ac9db8 [SCSI] target: Ad... |
539 |
struct se_device *dev, |
6bb826121 target: Convert s... |
540 |
struct se_lun *lun) |
c66ac9db8 [SCSI] target: Ad... |
541 |
{ |
8d9efe539 target: fix retur... |
542 |
int rc; |
c66ac9db8 [SCSI] target: Ad... |
543 |
|
03a68b44f target: Remove en... |
544 |
rc = core_tpg_add_lun(tpg, lun, false, dev); |
8d9efe539 target: fix retur... |
545 |
if (rc < 0) |
6bb826121 target: Convert s... |
546 |
return rc; |
c66ac9db8 [SCSI] target: Ad... |
547 |
|
f2d306802 target: use 64-bi... |
548 |
pr_debug("%s_TPG[%u]_LUN[%llu] - Activated %s Logical Unit from" |
e3d6f909e target: Core clea... |
549 550 |
" CORE HBA: %u ", tpg->se_tpg_tfo->get_fabric_name(), |
2af7973a3 target: Refer to ... |
551 |
tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
2dca673b4 target: Remove hb... |
552 |
tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); |
c66ac9db8 [SCSI] target: Ad... |
553 554 555 556 |
/* * Update LUN maps for dynamically added initiators when * generate_node_acl is enabled. */ |
e3d6f909e target: Core clea... |
557 |
if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
c66ac9db8 [SCSI] target: Ad... |
558 |
struct se_node_acl *acl; |
403edd78a target: Convert s... |
559 560 |
mutex_lock(&tpg->acl_node_mutex); |
c66ac9db8 [SCSI] target: Ad... |
561 |
list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
052605c6c target: Make stan... |
562 563 564 |
if (acl->dynamic_node_acl && (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { |
df9766ca9 target: Only rese... |
565 |
core_tpg_add_node_to_devs(acl, tpg, lun); |
c66ac9db8 [SCSI] target: Ad... |
566 567 |
} } |
403edd78a target: Convert s... |
568 |
mutex_unlock(&tpg->acl_node_mutex); |
c66ac9db8 [SCSI] target: Ad... |
569 |
} |
6bb826121 target: Convert s... |
570 |
return 0; |
c66ac9db8 [SCSI] target: Ad... |
571 572 573 574 575 576 |
} /* core_dev_del_lun(): * * */ |
cd9d7cbae target: Change co... |
577 |
void core_dev_del_lun( |
c66ac9db8 [SCSI] target: Ad... |
578 |
struct se_portal_group *tpg, |
cd9d7cbae target: Change co... |
579 |
struct se_lun *lun) |
c66ac9db8 [SCSI] target: Ad... |
580 |
{ |
f2d306802 target: use 64-bi... |
581 |
pr_debug("%s_TPG[%u]_LUN[%llu] - Deactivating %s Logical Unit from" |
e3d6f909e target: Core clea... |
582 583 |
" device object ", tpg->se_tpg_tfo->get_fabric_name(), |
cd9d7cbae target: Change co... |
584 |
tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
e3d6f909e target: Core clea... |
585 |
tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db8 [SCSI] target: Ad... |
586 |
|
cd9d7cbae target: Change co... |
587 |
core_tpg_remove_lun(tpg, lun); |
c66ac9db8 [SCSI] target: Ad... |
588 |
} |
c66ac9db8 [SCSI] target: Ad... |
589 590 |
struct se_lun_acl *core_dev_init_initiator_node_lun_acl( struct se_portal_group *tpg, |
fcf29481f target: Fix looku... |
591 |
struct se_node_acl *nacl, |
f2d306802 target: use 64-bi... |
592 |
u64 mapped_lun, |
c66ac9db8 [SCSI] target: Ad... |
593 594 595 |
int *ret) { struct se_lun_acl *lacl; |
c66ac9db8 [SCSI] target: Ad... |
596 |
|
fcf29481f target: Fix looku... |
597 |
if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) { |
6708bb27b target: Follow up... |
598 599 |
pr_err("%s InitiatorName exceeds maximum size. ", |
e3d6f909e target: Core clea... |
600 |
tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db8 [SCSI] target: Ad... |
601 602 603 |
*ret = -EOVERFLOW; return NULL; } |
c66ac9db8 [SCSI] target: Ad... |
604 |
lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
6708bb27b target: Follow up... |
605 606 607 |
if (!lacl) { pr_err("Unable to allocate memory for struct se_lun_acl. "); |
c66ac9db8 [SCSI] target: Ad... |
608 609 610 |
*ret = -ENOMEM; return NULL; } |
c66ac9db8 [SCSI] target: Ad... |
611 612 |
lacl->mapped_lun = mapped_lun; lacl->se_lun_nacl = nacl; |
c66ac9db8 [SCSI] target: Ad... |
613 614 615 616 617 618 619 |
return lacl; } int core_dev_add_initiator_node_lun_acl( struct se_portal_group *tpg, struct se_lun_acl *lacl, |
6bb826121 target: Convert s... |
620 |
struct se_lun *lun, |
03a68b44f target: Remove en... |
621 |
bool lun_access_ro) |
c66ac9db8 [SCSI] target: Ad... |
622 |
{ |
6bb826121 target: Convert s... |
623 |
struct se_node_acl *nacl = lacl->se_lun_nacl; |
4cc987eaf target: Drop lun_... |
624 625 626 627 628 |
/* * rcu_dereference_raw protected by se_lun->lun_group symlink * reference to se_device->dev_group. */ struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev); |
c66ac9db8 [SCSI] target: Ad... |
629 |
|
6708bb27b target: Follow up... |
630 |
if (!nacl) |
c66ac9db8 [SCSI] target: Ad... |
631 |
return -EINVAL; |
03a68b44f target: Remove en... |
632 633 |
if (lun->lun_access_ro) lun_access_ro = true; |
c66ac9db8 [SCSI] target: Ad... |
634 635 |
lacl->se_lun = lun; |
e80ac6c4c target: refactor ... |
636 |
if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, |
03a68b44f target: Remove en... |
637 |
lun_access_ro, nacl, tpg) < 0) |
c66ac9db8 [SCSI] target: Ad... |
638 |
return -EINVAL; |
f2d306802 target: use 64-bi... |
639 |
pr_debug("%s_TPG[%hu]_LUN[%llu->%llu] - Added %s ACL for " |
e3d6f909e target: Core clea... |
640 641 |
" InitiatorNode: %s ", tpg->se_tpg_tfo->get_fabric_name(), |
6bb826121 target: Convert s... |
642 |
tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, lacl->mapped_lun, |
03a68b44f target: Remove en... |
643 |
lun_access_ro ? "RO" : "RW", |
b6a54b8d8 target: remove in... |
644 |
nacl->initiatorname); |
c66ac9db8 [SCSI] target: Ad... |
645 646 647 648 |
/* * Check to see if there are any existing persistent reservation APTPL * pre-registrations that need to be enabled for this LUN ACL.. */ |
4cc987eaf target: Drop lun_... |
649 |
core_scsi3_check_aptpl_registration(dev, tpg, lun, nacl, |
e24805637 target: Fix APTPL... |
650 |
lacl->mapped_lun); |
c66ac9db8 [SCSI] target: Ad... |
651 652 |
return 0; } |
c66ac9db8 [SCSI] target: Ad... |
653 |
int core_dev_del_initiator_node_lun_acl( |
c66ac9db8 [SCSI] target: Ad... |
654 655 656 |
struct se_lun *lun, struct se_lun_acl *lacl) { |
adf653f92 target: Subsume s... |
657 |
struct se_portal_group *tpg = lun->lun_tpg; |
c66ac9db8 [SCSI] target: Ad... |
658 |
struct se_node_acl *nacl; |
29a05deeb target: Convert s... |
659 |
struct se_dev_entry *deve; |
c66ac9db8 [SCSI] target: Ad... |
660 661 |
nacl = lacl->se_lun_nacl; |
6708bb27b target: Follow up... |
662 |
if (!nacl) |
c66ac9db8 [SCSI] target: Ad... |
663 |
return -EINVAL; |
29a05deeb target: Convert s... |
664 665 666 667 668 |
mutex_lock(&nacl->lun_entry_mutex); deve = target_nacl_find_deve(nacl, lacl->mapped_lun); if (deve) core_disable_device_list_for_node(lun, deve, nacl, tpg); mutex_unlock(&nacl->lun_entry_mutex); |
c66ac9db8 [SCSI] target: Ad... |
669 |
|
f2d306802 target: use 64-bi... |
670 671 672 |
pr_debug("%s_TPG[%hu]_LUN[%llu] - Removed ACL for" " InitiatorNode: %s Mapped LUN: %llu ", |
e3d6f909e target: Core clea... |
673 674 |
tpg->se_tpg_tfo->get_fabric_name(), tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
b6a54b8d8 target: remove in... |
675 |
nacl->initiatorname, lacl->mapped_lun); |
c66ac9db8 [SCSI] target: Ad... |
676 677 678 679 680 681 682 683 |
return 0; } void core_dev_free_initiator_node_lun_acl( struct se_portal_group *tpg, struct se_lun_acl *lacl) { |
6708bb27b target: Follow up... |
684 |
pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
f2d306802 target: use 64-bi... |
685 686 |
" Mapped LUN: %llu ", tpg->se_tpg_tfo->get_fabric_name(), |
e3d6f909e target: Core clea... |
687 688 |
tpg->se_tpg_tfo->tpg_get_tag(tpg), tpg->se_tpg_tfo->get_fabric_name(), |
b6a54b8d8 target: remove in... |
689 |
lacl->se_lun_nacl->initiatorname, lacl->mapped_lun); |
c66ac9db8 [SCSI] target: Ad... |
690 691 692 |
kfree(lacl); } |
0fd97ccf4 target: kill stru... |
693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 |
static void scsi_dump_inquiry(struct se_device *dev) { struct t10_wwn *wwn = &dev->t10_wwn; char buf[17]; int i, device_type; /* * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer */ for (i = 0; i < 8; i++) if (wwn->vendor[i] >= 0x20) buf[i] = wwn->vendor[i]; else buf[i] = ' '; buf[i] = '\0'; pr_debug(" Vendor: %s ", buf); for (i = 0; i < 16; i++) if (wwn->model[i] >= 0x20) buf[i] = wwn->model[i]; else buf[i] = ' '; buf[i] = '\0'; pr_debug(" Model: %s ", buf); for (i = 0; i < 4; i++) if (wwn->revision[i] >= 0x20) buf[i] = wwn->revision[i]; else buf[i] = ' '; buf[i] = '\0'; pr_debug(" Revision: %s ", buf); device_type = dev->transport->get_device_type(dev); pr_debug(" Type: %s ", scsi_device_type(device_type)); |
0fd97ccf4 target: kill stru... |
730 731 732 733 734 |
} struct se_device *target_alloc_device(struct se_hba *hba, const char *name) { struct se_device *dev; |
4863e5256 target: Add per d... |
735 |
struct se_lun *xcopy_lun; |
0fd97ccf4 target: kill stru... |
736 |
|
0a06d4309 target: simplify ... |
737 |
dev = hba->backend->ops->alloc_device(hba, name); |
0fd97ccf4 target: kill stru... |
738 739 |
if (!dev) return NULL; |
0ff875498 target: Add link_... |
740 |
dev->dev_link_magic = SE_DEV_LINK_MAGIC; |
0fd97ccf4 target: kill stru... |
741 |
dev->se_hba = hba; |
0a06d4309 target: simplify ... |
742 |
dev->transport = hba->backend->ops; |
fe052a181 target: Use struc... |
743 |
dev->prot_length = sizeof(struct t10_pi_tuple); |
4cc987eaf target: Drop lun_... |
744 |
dev->hba_index = hba->hba_index; |
0fd97ccf4 target: kill stru... |
745 746 747 748 749 750 751 |
INIT_LIST_HEAD(&dev->dev_list); INIT_LIST_HEAD(&dev->dev_sep_list); INIT_LIST_HEAD(&dev->dev_tmr_list); INIT_LIST_HEAD(&dev->delayed_cmd_list); INIT_LIST_HEAD(&dev->state_list); INIT_LIST_HEAD(&dev->qf_cmd_list); |
d9ea32bff target: Add globa... |
752 |
INIT_LIST_HEAD(&dev->g_dev_node); |
0fd97ccf4 target: kill stru... |
753 754 755 756 757 758 |
spin_lock_init(&dev->execute_task_lock); spin_lock_init(&dev->delayed_cmd_lock); spin_lock_init(&dev->dev_reservation_lock); spin_lock_init(&dev->se_port_lock); spin_lock_init(&dev->se_tmr_lock); spin_lock_init(&dev->qf_cmd_lock); |
68ff9b9b2 target: Add suppo... |
759 |
sema_init(&dev->caw_sem, 1); |
0fd97ccf4 target: kill stru... |
760 761 762 763 764 765 766 767 |
INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list); spin_lock_init(&dev->t10_wwn.t10_vpd_lock); INIT_LIST_HEAD(&dev->t10_pr.registration_list); INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list); spin_lock_init(&dev->t10_pr.registration_lock); spin_lock_init(&dev->t10_pr.aptpl_reg_lock); INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list); spin_lock_init(&dev->t10_alua.tg_pt_gps_lock); |
c66094bf3 target_core_alua:... |
768 769 |
INIT_LIST_HEAD(&dev->t10_alua.lba_map_list); spin_lock_init(&dev->t10_alua.lba_map_lock); |
0fd97ccf4 target: kill stru... |
770 |
|
0fd97ccf4 target: kill stru... |
771 772 773 774 |
dev->t10_wwn.t10_dev = dev; dev->t10_alua.t10_dev = dev; dev->dev_attrib.da_dev = dev; |
adfa9570a target: Add devic... |
775 |
dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS; |
814e5b451 target: fix DPO a... |
776 777 778 |
dev->dev_attrib.emulate_dpo = 1; dev->dev_attrib.emulate_fua_write = 1; dev->dev_attrib.emulate_fua_read = 1; |
0fd97ccf4 target: kill stru... |
779 780 781 782 783 |
dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; dev->dev_attrib.emulate_tas = DA_EMULATE_TAS; dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; |
0123a9ec6 target: Add MAXIM... |
784 |
dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; |
d397a445f target: Add Third... |
785 |
dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; |
2ed22c9cb target/configfs: ... |
786 |
dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT; |
0fd97ccf4 target: kill stru... |
787 |
dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
92404e609 target: Add force... |
788 |
dev->dev_attrib.force_pr_aptpl = DA_FORCE_PR_APTPL; |
0fd97ccf4 target: kill stru... |
789 790 791 792 793 794 795 796 |
dev->dev_attrib.is_nonrot = DA_IS_NONROT; dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; dev->dev_attrib.max_unmap_block_desc_count = DA_MAX_UNMAP_BLOCK_DESC_COUNT; dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; dev->dev_attrib.unmap_granularity_alignment = DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; |
e6f41633c target/sbc: Add L... |
797 798 |
dev->dev_attrib.unmap_zeroes_data = DA_UNMAP_ZEROES_DATA_DEFAULT; |
773cbaf74 target: Add/check... |
799 |
dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; |
0fd97ccf4 target: kill stru... |
800 |
|
4863e5256 target: Add per d... |
801 |
xcopy_lun = &dev->xcopy_lun; |
4cc987eaf target: Drop lun_... |
802 |
rcu_assign_pointer(xcopy_lun->lun_se_dev, dev); |
4863e5256 target: Add per d... |
803 |
init_completion(&xcopy_lun->lun_ref_comp); |
adf653f92 target: Subsume s... |
804 805 806 807 |
INIT_LIST_HEAD(&xcopy_lun->lun_deve_list); INIT_LIST_HEAD(&xcopy_lun->lun_dev_link); mutex_init(&xcopy_lun->lun_tg_pt_md_mutex); xcopy_lun->lun_tpg = &xcopy_pt_tpg; |
4863e5256 target: Add per d... |
808 |
|
0fd97ccf4 target: kill stru... |
809 810 |
return dev; } |
8a9ebe717 target: Fix WRITE... |
811 812 813 814 815 816 |
/* * Check if the underlying struct block_device request_queue supports * the QUEUE_FLAG_DISCARD bit for UNMAP/WRITE_SAME in SCSI + TRIM * in ATA and we need to set TPE=1 */ bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib, |
ea263c7fa target: Fix max_u... |
817 |
struct request_queue *q) |
8a9ebe717 target: Fix WRITE... |
818 |
{ |
ea263c7fa target: Fix max_u... |
819 |
int block_size = queue_logical_block_size(q); |
8a9ebe717 target: Fix WRITE... |
820 821 |
if (!blk_queue_discard(q)) return false; |
ea263c7fa target: Fix max_u... |
822 823 |
attrib->max_unmap_lba_count = q->limits.max_discard_sectors >> (ilog2(block_size) - 9); |
8a9ebe717 target: Fix WRITE... |
824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 |
/* * Currently hardcoded to 1 in Linux/SCSI code.. */ attrib->max_unmap_block_desc_count = 1; attrib->unmap_granularity = q->limits.discard_granularity / block_size; attrib->unmap_granularity_alignment = q->limits.discard_alignment / block_size; attrib->unmap_zeroes_data = q->limits.discard_zeroes_data; return true; } EXPORT_SYMBOL(target_configure_unmap_from_queue); /* * Convert from blocksize advertised to the initiator to the 512 byte * units unconditionally used by the Linux block layer. */ sector_t target_to_linux_sector(struct se_device *dev, sector_t lb) { switch (dev->dev_attrib.block_size) { case 4096: return lb << 3; case 2048: return lb << 2; case 1024: return lb << 1; default: return lb; } } EXPORT_SYMBOL(target_to_linux_sector); |
0fd97ccf4 target: kill stru... |
854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 |
int target_configure_device(struct se_device *dev) { struct se_hba *hba = dev->se_hba; int ret; if (dev->dev_flags & DF_CONFIGURED) { pr_err("se_dev->se_dev_ptr already set for storage" " object "); return -EEXIST; } ret = dev->transport->configure_device(dev); if (ret) goto out; |
0fd97ccf4 target: kill stru... |
869 870 871 872 873 874 875 876 877 878 879 880 |
/* * XXX: there is not much point to have two different values here.. */ dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size; dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth; /* * Align max_hw_sectors down to PAGE_SIZE I/O transfers */ dev->dev_attrib.hw_max_sectors = se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, dev->dev_attrib.hw_block_size); |
046ba6428 target: Drop arbi... |
881 |
dev->dev_attrib.optimal_sectors = dev->dev_attrib.hw_max_sectors; |
0fd97ccf4 target: kill stru... |
882 883 884 |
dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX); dev->creation_time = get_jiffies_64(); |
0fd97ccf4 target: kill stru... |
885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 |
ret = core_setup_alua(dev); if (ret) goto out; /* * Startup the struct se_device processing thread */ dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, dev->transport->name); if (!dev->tmr_wq) { pr_err("Unable to create tmr workqueue for %s ", dev->transport->name); ret = -ENOMEM; goto out_free_alua; } /* * Setup work_queue for QUEUE_FULL */ INIT_WORK(&dev->qf_work_queue, target_qf_do_work); /* * Preload the initial INQUIRY const values if we are doing * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI * passthrough because this is being provided by the backend LLD. */ |
a3541703e target: Use a PAS... |
912 |
if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) { |
0fd97ccf4 target: kill stru... |
913 914 915 916 917 918 919 920 921 922 923 924 |
strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); strncpy(&dev->t10_wwn.model[0], dev->transport->inquiry_prod, 16); strncpy(&dev->t10_wwn.revision[0], dev->transport->inquiry_rev, 4); } scsi_dump_inquiry(dev); spin_lock(&hba->device_lock); hba->dev_count++; spin_unlock(&hba->device_lock); |
d9ea32bff target: Add globa... |
925 926 927 928 |
mutex_lock(&g_device_mutex); list_add_tail(&dev->g_dev_node, &g_device_list); mutex_unlock(&g_device_mutex); |
5f7da044f target: Fix virtu... |
929 |
dev->dev_flags |= DF_CONFIGURED; |
0fd97ccf4 target: kill stru... |
930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 |
return 0; out_free_alua: core_alua_free_lu_gp_mem(dev); out: se_release_vpd_for_dev(dev); return ret; } void target_free_device(struct se_device *dev) { struct se_hba *hba = dev->se_hba; WARN_ON(!list_empty(&dev->dev_sep_list)); if (dev->dev_flags & DF_CONFIGURED) { destroy_workqueue(dev->tmr_wq); |
d9ea32bff target: Add globa... |
947 948 949 |
mutex_lock(&g_device_mutex); list_del(&dev->g_dev_node); mutex_unlock(&g_device_mutex); |
0fd97ccf4 target: kill stru... |
950 951 952 953 954 955 |
spin_lock(&hba->device_lock); hba->dev_count--; spin_unlock(&hba->device_lock); } core_alua_free_lu_gp_mem(dev); |
229d4f112 target_core_alua:... |
956 |
core_alua_set_lba_map(dev, NULL, 0, 0); |
0fd97ccf4 target: kill stru... |
957 958 |
core_scsi3_free_all_registrations(dev); se_release_vpd_for_dev(dev); |
2ed22c9cb target/configfs: ... |
959 960 |
if (dev->transport->free_prot) dev->transport->free_prot(dev); |
0fd97ccf4 target: kill stru... |
961 962 |
dev->transport->free_device(dev); } |
c66ac9db8 [SCSI] target: Ad... |
963 964 965 966 |
int core_dev_setup_virtual_lun0(void) { struct se_hba *hba; struct se_device *dev; |
db5d1c3cc target: Make virt... |
967 |
char buf[] = "rd_pages=8,rd_nullio=1"; |
c66ac9db8 [SCSI] target: Ad... |
968 |
int ret; |
6708bb27b target: Follow up... |
969 |
hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
c66ac9db8 [SCSI] target: Ad... |
970 971 |
if (IS_ERR(hba)) return PTR_ERR(hba); |
0fd97ccf4 target: kill stru... |
972 973 |
dev = target_alloc_device(hba, "virt_lun0"); if (!dev) { |
c66ac9db8 [SCSI] target: Ad... |
974 |
ret = -ENOMEM; |
0fd97ccf4 target: kill stru... |
975 |
goto out_free_hba; |
c66ac9db8 [SCSI] target: Ad... |
976 |
} |
c66ac9db8 [SCSI] target: Ad... |
977 |
|
0a06d4309 target: simplify ... |
978 |
hba->backend->ops->set_configfs_dev_params(dev, buf, sizeof(buf)); |
c66ac9db8 [SCSI] target: Ad... |
979 |
|
0fd97ccf4 target: kill stru... |
980 981 982 |
ret = target_configure_device(dev); if (ret) goto out_free_se_dev; |
c66ac9db8 [SCSI] target: Ad... |
983 |
|
0fd97ccf4 target: kill stru... |
984 985 |
lun0_hba = hba; g_lun0_dev = dev; |
c66ac9db8 [SCSI] target: Ad... |
986 |
return 0; |
0fd97ccf4 target: kill stru... |
987 988 989 990 991 |
out_free_se_dev: target_free_device(dev); out_free_hba: core_delete_hba(hba); |
c66ac9db8 [SCSI] target: Ad... |
992 993 994 995 996 997 |
return ret; } void core_dev_release_virtual_lun0(void) { |
e3d6f909e target: Core clea... |
998 |
struct se_hba *hba = lun0_hba; |
c66ac9db8 [SCSI] target: Ad... |
999 |
|
6708bb27b target: Follow up... |
1000 |
if (!hba) |
c66ac9db8 [SCSI] target: Ad... |
1001 |
return; |
e3d6f909e target: Core clea... |
1002 |
if (g_lun0_dev) |
0fd97ccf4 target: kill stru... |
1003 |
target_free_device(g_lun0_dev); |
c66ac9db8 [SCSI] target: Ad... |
1004 1005 |
core_delete_hba(hba); } |
7bfea53b5 target: Move pass... |
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 |
/* * Common CDB parsing for kernel and user passthrough. */ sense_reason_t passthrough_parse_cdb(struct se_cmd *cmd, sense_reason_t (*exec_cmd)(struct se_cmd *cmd)) { unsigned char *cdb = cmd->t_task_cdb; /* * Clear a lun set in the cdb if the initiator talking to use spoke * and old standards version, as we can't assume the underlying device * won't choke up on it. */ switch (cdb[0]) { case READ_10: /* SBC - RDProtect */ case READ_12: /* SBC - RDProtect */ case READ_16: /* SBC - RDProtect */ case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */ case VERIFY: /* SBC - VRProtect */ case VERIFY_16: /* SBC - VRProtect */ case WRITE_VERIFY: /* SBC - VRProtect */ case WRITE_VERIFY_12: /* SBC - VRProtect */ case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */ break; default: cdb[1] &= 0x1f; /* clear logical unit number */ break; } /* * For REPORT LUNS we always need to emulate the response, for everything * else, pass it up. */ if (cdb[0] == REPORT_LUNS) { cmd->execute_cmd = spc_emulate_report_luns; return TCM_NO_SENSE; } /* Set DATA_CDB flag for ops that should have it */ switch (cdb[0]) { case READ_6: case READ_10: case READ_12: case READ_16: case WRITE_6: case WRITE_10: case WRITE_12: case WRITE_16: case WRITE_VERIFY: case WRITE_VERIFY_12: case 0x8e: /* WRITE_VERIFY_16 */ case COMPARE_AND_WRITE: case XDWRITEREAD_10: cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; break; case VARIABLE_LENGTH_CMD: switch (get_unaligned_be16(&cdb[8])) { case READ_32: case WRITE_32: case 0x0c: /* WRITE_VERIFY_32 */ case XDWRITEREAD_32: cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; break; } } cmd->execute_cmd = exec_cmd; return TCM_NO_SENSE; } EXPORT_SYMBOL(passthrough_parse_cdb); |