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target: Subsume se_port + t10_alua_tg_pt_gp_member into se_lun 

This patch eliminates all se_port + t10_alua_tg_pt_gp_member usage,
and converts current users to direct se_lun pointer dereference.

This includes the removal of core_export_port(), core_release_port()
core_dev_export() and core_dev_unexport().  Along with conversion
of special case se_lun pointer dereference within PR ALL_TG_PT=1
and ALUA access state transition UNIT_ATTENTION handling.

Also, update core_enable_device_list_for_node() to reference the
new per se_lun->lun_deve_list when creating a new entry, or
replacing an existing one via RCU.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
hifive-unleashed-5.1
Christoph Hellwig 2015-05-25 21:33:08 -07:00 committed by Nicholas Bellinger
parent b3eeea6619
commit adf653f92f
13 changed files with 461 additions and 810 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

400
drivers/target/target_core_alua.c
View File

@ -43,11 +43,13 @@
static sense_reason_t core_alua_check_transition(int state, int valid,
int *primary);
static int core_alua_set_tg_pt_secondary_state(
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem,
struct se_port *port, int explicit, int offline);
struct se_lun *lun, int explicit, int offline);
static char *core_alua_dump_state(int state);
static void __target_attach_tg_pt_gp(struct se_lun *lun,
struct t10_alua_tg_pt_gp *tg_pt_gp);
static u16 alua_lu_gps_counter;
static u32 alua_lu_gps_count;
@ -145,9 +147,8 @@ sense_reason_t
target_emulate_report_target_port_groups(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct se_port *port;
struct t10_alua_tg_pt_gp *tg_pt_gp;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
struct se_lun *lun;
unsigned char *buf;
u32 rd_len = 0, off;
int ext_hdr = (cmd->t_task_cdb[1] & 0x20);
@ -222,9 +223,8 @@ target_emulate_report_target_port_groups(struct se_cmd *cmd)
rd_len += 8;
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list,
tg_pt_gp_mem_list) {
port = tg_pt_gp_mem->tg_pt;
list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list,
lun_tg_pt_gp_link) {
/*
* Start Target Port descriptor format
*
@ -234,8 +234,8 @@ target_emulate_report_target_port_groups(struct se_cmd *cmd)
/*
* Set RELATIVE TARGET PORT IDENTIFIER
*/
buf[off++] = ((port->sep_rtpi >> 8) & 0xff);
buf[off++] = (port->sep_rtpi & 0xff);
buf[off++] = ((lun->lun_rtpi >> 8) & 0xff);
buf[off++] = (lun->lun_rtpi & 0xff);
rd_len += 4;
}
spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
@ -259,15 +259,11 @@ target_emulate_report_target_port_groups(struct se_cmd *cmd)
* this CDB was received upon to determine this value individually
* for ALUA target port group.
*/
port = cmd->se_lun->lun_sep;
tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
if (tg_pt_gp_mem) {
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
if (tg_pt_gp)
buf[5] = tg_pt_gp->tg_pt_gp_implicit_trans_secs;
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
}
spin_lock(&cmd->se_lun->lun_tg_pt_gp_lock);
tg_pt_gp = cmd->se_lun->lun_tg_pt_gp;
if (tg_pt_gp)
buf[5] = tg_pt_gp->tg_pt_gp_implicit_trans_secs;
spin_unlock(&cmd->se_lun->lun_tg_pt_gp_lock);
}
transport_kunmap_data_sg(cmd);
@ -284,10 +280,9 @@ sense_reason_t
target_emulate_set_target_port_groups(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct se_port *port, *l_port = cmd->se_lun->lun_sep;
struct se_lun *l_lun = cmd->se_lun;
struct se_node_acl *nacl = cmd->se_sess->se_node_acl;
struct t10_alua_tg_pt_gp *tg_pt_gp = NULL, *l_tg_pt_gp;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem, *l_tg_pt_gp_mem;
unsigned char *buf;
unsigned char *ptr;
sense_reason_t rc = TCM_NO_SENSE;
@ -295,9 +290,6 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd)
int alua_access_state, primary = 0, valid_states;
u16 tg_pt_id, rtpi;
if (!l_port)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
if (cmd->data_length < 4) {
pr_warn("SET TARGET PORT GROUPS parameter list length %u too"
" small\n", cmd->data_length);
@ -312,29 +304,24 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd)
* Determine if explicit ALUA via SET_TARGET_PORT_GROUPS is allowed
* for the local tg_pt_gp.
*/
l_tg_pt_gp_mem = l_port->sep_alua_tg_pt_gp_mem;
if (!l_tg_pt_gp_mem) {
pr_err("Unable to access l_port->sep_alua_tg_pt_gp_mem\n");
rc = TCM_UNSUPPORTED_SCSI_OPCODE;
goto out;
}
spin_lock(&l_tg_pt_gp_mem->tg_pt_gp_mem_lock);
l_tg_pt_gp = l_tg_pt_gp_mem->tg_pt_gp;
spin_lock(&l_lun->lun_tg_pt_gp_lock);
l_tg_pt_gp = l_lun->lun_tg_pt_gp;
if (!l_tg_pt_gp) {
spin_unlock(&l_tg_pt_gp_mem->tg_pt_gp_mem_lock);
pr_err("Unable to access *l_tg_pt_gp_mem->tg_pt_gp\n");
spin_unlock(&l_lun->lun_tg_pt_gp_lock);
pr_err("Unable to access l_lun->tg_pt_gp\n");
rc = TCM_UNSUPPORTED_SCSI_OPCODE;
goto out;
}
spin_unlock(&l_tg_pt_gp_mem->tg_pt_gp_mem_lock);
if (!(l_tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA)) {
spin_unlock(&l_lun->lun_tg_pt_gp_lock);
pr_debug("Unable to process SET_TARGET_PORT_GROUPS"
" while TPGS_EXPLICIT_ALUA is disabled\n");
rc = TCM_UNSUPPORTED_SCSI_OPCODE;
goto out;
}
valid_states = l_tg_pt_gp->tg_pt_gp_alua_supported_states;
spin_unlock(&l_lun->lun_tg_pt_gp_lock);
ptr = &buf[4]; /* Skip over RESERVED area in header */
@ -396,7 +383,7 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd)
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
if (!core_alua_do_port_transition(tg_pt_gp,
dev, l_port, nacl,
dev, l_lun, nacl,
alua_access_state, 1))
found = true;
@ -406,6 +393,8 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd)
}
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
} else {
struct se_lun *lun;
/*
* Extract the RELATIVE TARGET PORT IDENTIFIER to identify
* the Target Port in question for the the incoming
@ -417,17 +406,16 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd)
* for the struct se_device storage object.
*/
spin_lock(&dev->se_port_lock);
list_for_each_entry(port, &dev->dev_sep_list,
sep_list) {
if (port->sep_rtpi != rtpi)
list_for_each_entry(lun, &dev->dev_sep_list,
lun_dev_link) {
if (lun->lun_rtpi != rtpi)
continue;
tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
// XXX: racy unlock
spin_unlock(&dev->se_port_lock);
if (!core_alua_set_tg_pt_secondary_state(
tg_pt_gp_mem, port, 1, 1))
lun, 1, 1))
found = true;
spin_lock(&dev->se_port_lock);
@ -696,9 +684,7 @@ target_alua_state_check(struct se_cmd *cmd)
struct se_device *dev = cmd->se_dev;
unsigned char *cdb = cmd->t_task_cdb;
struct se_lun *lun = cmd->se_lun;
struct se_port *port = lun->lun_sep;
struct t10_alua_tg_pt_gp *tg_pt_gp;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
int out_alua_state, nonop_delay_msecs;
if (dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)
@ -706,33 +692,27 @@ target_alua_state_check(struct se_cmd *cmd)
if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
return 0;
if (!port)
return 0;
/*
* First, check for a struct se_port specific secondary ALUA target port
* access state: OFFLINE
*/
if (atomic_read(&port->sep_tg_pt_secondary_offline)) {
if (atomic_read(&lun->lun_tg_pt_secondary_offline)) {
pr_debug("ALUA: Got secondary offline status for local"
" target port\n");
set_ascq(cmd, ASCQ_04H_ALUA_OFFLINE);
return TCM_CHECK_CONDITION_NOT_READY;
}
/*
* Second, obtain the struct t10_alua_tg_pt_gp_member pointer to the
* ALUA target port group, to obtain current ALUA access state.
* Otherwise look for the underlying struct se_device association with
* a ALUA logical unit group.
*/
tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
if (!tg_pt_gp_mem)
if (!lun->lun_tg_pt_gp)
return 0;
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
spin_lock(&lun->lun_tg_pt_gp_lock);
tg_pt_gp = lun->lun_tg_pt_gp;
out_alua_state = atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state);
nonop_delay_msecs = tg_pt_gp->tg_pt_gp_nonop_delay_msecs;
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
// XXX: keeps using tg_pt_gp witout reference after unlock
spin_unlock(&lun->lun_tg_pt_gp_lock);
/*
* Process ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED in a separate conditional
* statement so the compiler knows explicitly to check this case first.
@ -764,7 +744,7 @@ target_alua_state_check(struct se_cmd *cmd)
break;
/*
* OFFLINE is a secondary ALUA target port group access state, that is
* handled above with struct se_port->sep_tg_pt_secondary_offline=1
* handled above with struct se_lun->lun_tg_pt_secondary_offline=1
*/
case ALUA_ACCESS_STATE_OFFLINE:
default:
@ -906,10 +886,6 @@ int core_alua_check_nonop_delay(
}
EXPORT_SYMBOL(core_alua_check_nonop_delay);
/*
* Called with tg_pt_gp->tg_pt_gp_md_mutex or tg_pt_gp_mem->sep_tg_pt_md_mutex
*
*/
static int core_alua_write_tpg_metadata(
const char *path,
unsigned char *md_buf,
@ -971,16 +947,14 @@ static void core_alua_do_transition_tg_pt_work(struct work_struct *work)
struct t10_alua_tg_pt_gp, tg_pt_gp_transition_work.work);
struct se_device *dev = tg_pt_gp->tg_pt_gp_dev;
struct se_dev_entry *se_deve;
struct se_lun *lun;
struct se_lun_acl *lacl;
struct se_port *port;
struct t10_alua_tg_pt_gp_member *mem;
bool explicit = (tg_pt_gp->tg_pt_gp_alua_access_status ==
ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG);
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
list_for_each_entry(mem, &tg_pt_gp->tg_pt_gp_mem_list,
tg_pt_gp_mem_list) {
port = mem->tg_pt;
list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list,
lun_tg_pt_gp_link) {
/*
* After an implicit target port asymmetric access state
* change, a device server shall establish a unit attention
@ -995,14 +969,13 @@ static void core_alua_do_transition_tg_pt_work(struct work_struct *work)
* every I_T nexus other than the I_T nexus on which the SET
* TARGET PORT GROUPS command
*/
atomic_inc_mb(&mem->tg_pt_gp_mem_ref_cnt);
atomic_inc_mb(&lun->lun_active);
spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
spin_lock_bh(&port->sep_alua_lock);
list_for_each_entry(se_deve, &port->sep_alua_list,
alua_port_list) {
spin_lock_bh(&lun->lun_deve_lock);
list_for_each_entry(se_deve, &lun->lun_deve_list, lun_link) {
lacl = rcu_dereference_check(se_deve->se_lun_acl,
lockdep_is_held(&port->sep_alua_lock));
lockdep_is_held(&lun->lun_deve_lock));
/*
* se_deve->se_lun_acl pointer may be NULL for a
* entry created without explicit Node+MappedLUN ACLs
@ -1014,18 +987,18 @@ static void core_alua_do_transition_tg_pt_work(struct work_struct *work)
ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) &&
(tg_pt_gp->tg_pt_gp_alua_nacl != NULL) &&
(tg_pt_gp->tg_pt_gp_alua_nacl == lacl->se_lun_nacl) &&
(tg_pt_gp->tg_pt_gp_alua_port != NULL) &&
(tg_pt_gp->tg_pt_gp_alua_port == port))
(tg_pt_gp->tg_pt_gp_alua_lun != NULL) &&
(tg_pt_gp->tg_pt_gp_alua_lun == lun))
continue;
core_scsi3_ua_allocate(lacl->se_lun_nacl,
se_deve->mapped_lun, 0x2A,
ASCQ_2AH_ASYMMETRIC_ACCESS_STATE_CHANGED);
}
spin_unlock_bh(&port->sep_alua_lock);
spin_unlock_bh(&lun->lun_deve_lock);
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
atomic_dec_mb(&mem->tg_pt_gp_mem_ref_cnt);
atomic_dec_mb(&lun->lun_active);
}
spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
/*
@ -1143,7 +1116,7 @@ static int core_alua_do_transition_tg_pt(
int core_alua_do_port_transition(
struct t10_alua_tg_pt_gp *l_tg_pt_gp,
struct se_device *l_dev,
struct se_port *l_port,
struct se_lun *l_lun,
struct se_node_acl *l_nacl,
int new_state,
int explicit)
@ -1173,7 +1146,7 @@ int core_alua_do_port_transition(
* core_alua_do_transition_tg_pt() will always return
* success.
*/
l_tg_pt_gp->tg_pt_gp_alua_port = l_port;
l_tg_pt_gp->tg_pt_gp_alua_lun = l_lun;
l_tg_pt_gp->tg_pt_gp_alua_nacl = l_nacl;
rc = core_alua_do_transition_tg_pt(l_tg_pt_gp,
new_state, explicit);
@ -1212,10 +1185,10 @@ int core_alua_do_port_transition(
continue;
if (l_tg_pt_gp == tg_pt_gp) {
tg_pt_gp->tg_pt_gp_alua_port = l_port;
tg_pt_gp->tg_pt_gp_alua_lun = l_lun;
tg_pt_gp->tg_pt_gp_alua_nacl = l_nacl;
} else {
tg_pt_gp->tg_pt_gp_alua_port = NULL;
tg_pt_gp->tg_pt_gp_alua_lun = NULL;
tg_pt_gp->tg_pt_gp_alua_nacl = NULL;
}
atomic_inc_mb(&tg_pt_gp->tg_pt_gp_ref_cnt);
@ -1252,22 +1225,20 @@ int core_alua_do_port_transition(
return rc;
}
/*
* Called with tg_pt_gp_mem->sep_tg_pt_md_mutex held
*/
static int core_alua_update_tpg_secondary_metadata(
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem,
struct se_port *port)
static int core_alua_update_tpg_secondary_metadata(struct se_lun *lun)
{
struct se_portal_group *se_tpg = lun->lun_tpg;
unsigned char *md_buf;
struct se_portal_group *se_tpg = port->sep_tpg;
char path[ALUA_METADATA_PATH_LEN], wwn[ALUA_SECONDARY_METADATA_WWN_LEN];
int len, rc;
mutex_lock(&lun->lun_tg_pt_md_mutex);
md_buf = kzalloc(ALUA_MD_BUF_LEN, GFP_KERNEL);
if (!md_buf) {
pr_err("Unable to allocate buf for ALUA metadata\n");
return -ENOMEM;
rc = -ENOMEM;
goto out_unlock;
}
memset(path, 0, ALUA_METADATA_PATH_LEN);
@ -1282,32 +1253,33 @@ static int core_alua_update_tpg_secondary_metadata(
len = snprintf(md_buf, ALUA_MD_BUF_LEN, "alua_tg_pt_offline=%d\n"
"alua_tg_pt_status=0x%02x\n",
atomic_read(&port->sep_tg_pt_secondary_offline),
port->sep_tg_pt_secondary_stat);
atomic_read(&lun->lun_tg_pt_secondary_offline),
lun->lun_tg_pt_secondary_stat);
snprintf(path, ALUA_METADATA_PATH_LEN, "/var/target/alua/%s/%s/lun_%u",
se_tpg->se_tpg_tfo->get_fabric_name(), wwn,
port->sep_lun->unpacked_lun);
lun->unpacked_lun);
rc = core_alua_write_tpg_metadata(path, md_buf, len);
kfree(md_buf);
out_unlock:
mutex_unlock(&lun->lun_tg_pt_md_mutex);
return rc;
}
static int core_alua_set_tg_pt_secondary_state(
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem,
struct se_port *port,
struct se_lun *lun,
int explicit,
int offline)
{
struct t10_alua_tg_pt_gp *tg_pt_gp;
int trans_delay_msecs;
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
spin_lock(&lun->lun_tg_pt_gp_lock);
tg_pt_gp = lun->lun_tg_pt_gp;
if (!tg_pt_gp) {
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
spin_unlock(&lun->lun_tg_pt_gp_lock);
pr_err("Unable to complete secondary state"
" transition\n");
return -EINVAL;
@ -1315,14 +1287,14 @@ static int core_alua_set_tg_pt_secondary_state(
trans_delay_msecs = tg_pt_gp->tg_pt_gp_trans_delay_msecs;
/*
* Set the secondary ALUA target port access state to OFFLINE
* or release the previously secondary state for struct se_port
* or release the previously secondary state for struct se_lun
*/
if (offline)
atomic_set(&port->sep_tg_pt_secondary_offline, 1);
atomic_set(&lun->lun_tg_pt_secondary_offline, 1);
else
atomic_set(&port->sep_tg_pt_secondary_offline, 0);
atomic_set(&lun->lun_tg_pt_secondary_offline, 0);
port->sep_tg_pt_secondary_stat = (explicit) ?
lun->lun_tg_pt_secondary_stat = (explicit) ?
ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG :
ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA;
@ -1331,7 +1303,7 @@ static int core_alua_set_tg_pt_secondary_state(
"implicit", config_item_name(&tg_pt_gp->tg_pt_gp_group.cg_item),
tg_pt_gp->tg_pt_gp_id, (offline) ? "OFFLINE" : "ONLINE");
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
spin_unlock(&lun->lun_tg_pt_gp_lock);
/*
* Do the optional transition delay after we set the secondary
* ALUA access state.
@ -1342,11 +1314,8 @@ static int core_alua_set_tg_pt_secondary_state(
* See if we need to update the ALUA fabric port metadata for
* secondary state and status
*/
if (port->sep_tg_pt_secondary_write_md) {
mutex_lock(&port->sep_tg_pt_md_mutex);
core_alua_update_tpg_secondary_metadata(tg_pt_gp_mem, port);
mutex_unlock(&port->sep_tg_pt_md_mutex);
}
if (lun->lun_tg_pt_secondary_write_md)
core_alua_update_tpg_secondary_metadata(lun);
return 0;
}
@ -1700,7 +1669,7 @@ struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp(struct se_device *dev,
return NULL;
}
INIT_LIST_HEAD(&tg_pt_gp->tg_pt_gp_list);
INIT_LIST_HEAD(&tg_pt_gp->tg_pt_gp_mem_list);
INIT_LIST_HEAD(&tg_pt_gp->tg_pt_gp_lun_list);
mutex_init(&tg_pt_gp->tg_pt_gp_md_mutex);
spin_lock_init(&tg_pt_gp->tg_pt_gp_lock);
atomic_set(&tg_pt_gp->tg_pt_gp_ref_cnt, 0);
@ -1794,32 +1763,11 @@ again:
return 0;
}
struct t10_alua_tg_pt_gp_member *core_alua_allocate_tg_pt_gp_mem(
struct se_port *port)
{
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
tg_pt_gp_mem = kmem_cache_zalloc(t10_alua_tg_pt_gp_mem_cache,
GFP_KERNEL);
if (!tg_pt_gp_mem) {
pr_err("Unable to allocate struct t10_alua_tg_pt_gp_member\n");
return ERR_PTR(-ENOMEM);
}
INIT_LIST_HEAD(&tg_pt_gp_mem->tg_pt_gp_mem_list);
spin_lock_init(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
atomic_set(&tg_pt_gp_mem->tg_pt_gp_mem_ref_cnt, 0);
tg_pt_gp_mem->tg_pt = port;
port->sep_alua_tg_pt_gp_mem = tg_pt_gp_mem;
return tg_pt_gp_mem;
}
void core_alua_free_tg_pt_gp(
struct t10_alua_tg_pt_gp *tg_pt_gp)
{
struct se_device *dev = tg_pt_gp->tg_pt_gp_dev;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem, *tg_pt_gp_mem_tmp;
struct se_lun *lun, *next;
/*
* Once we have reached this point, config_item_put() has already
@ -1850,30 +1798,24 @@ void core_alua_free_tg_pt_gp(
* struct se_port.
*/
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
list_for_each_entry_safe(tg_pt_gp_mem, tg_pt_gp_mem_tmp,
&tg_pt_gp->tg_pt_gp_mem_list, tg_pt_gp_mem_list) {
if (tg_pt_gp_mem->tg_pt_gp_assoc) {
list_del(&tg_pt_gp_mem->tg_pt_gp_mem_list);
tg_pt_gp->tg_pt_gp_members--;
tg_pt_gp_mem->tg_pt_gp_assoc = 0;
}
list_for_each_entry_safe(lun, next,
&tg_pt_gp->tg_pt_gp_lun_list, lun_tg_pt_gp_link) {
list_del_init(&lun->lun_tg_pt_gp_link);
tg_pt_gp->tg_pt_gp_members--;
spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
/*
* tg_pt_gp_mem is associated with a single
* se_port->sep_alua_tg_pt_gp_mem, and is released via
* core_alua_free_tg_pt_gp_mem().
*
* If the passed tg_pt_gp does NOT match the default_tg_pt_gp,
* assume we want to re-associate a given tg_pt_gp_mem with
* default_tg_pt_gp.
*/
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
spin_lock(&lun->lun_tg_pt_gp_lock);
if (tg_pt_gp != dev->t10_alua.default_tg_pt_gp) {
__core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem,
__target_attach_tg_pt_gp(lun,
dev->t10_alua.default_tg_pt_gp);
} else
tg_pt_gp_mem->tg_pt_gp = NULL;
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
lun->lun_tg_pt_gp = NULL;
spin_unlock(&lun->lun_tg_pt_gp_lock);
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
}
@ -1882,35 +1824,6 @@ void core_alua_free_tg_pt_gp(
kmem_cache_free(t10_alua_tg_pt_gp_cache, tg_pt_gp);
}
void core_alua_free_tg_pt_gp_mem(struct se_port *port)
{
struct t10_alua_tg_pt_gp *tg_pt_gp;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
if (!tg_pt_gp_mem)
return;
while (atomic_read(&tg_pt_gp_mem->tg_pt_gp_mem_ref_cnt))
cpu_relax();
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
if (tg_pt_gp) {
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
if (tg_pt_gp_mem->tg_pt_gp_assoc) {
list_del(&tg_pt_gp_mem->tg_pt_gp_mem_list);
tg_pt_gp->tg_pt_gp_members--;
tg_pt_gp_mem->tg_pt_gp_assoc = 0;
}
spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
tg_pt_gp_mem->tg_pt_gp = NULL;
}
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
kmem_cache_free(t10_alua_tg_pt_gp_mem_cache, tg_pt_gp_mem);
}
static struct t10_alua_tg_pt_gp *core_alua_get_tg_pt_gp_by_name(
struct se_device *dev, const char *name)
{
@ -1944,50 +1857,58 @@ static void core_alua_put_tg_pt_gp_from_name(
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
}
/*
* Called with struct t10_alua_tg_pt_gp_member->tg_pt_gp_mem_lock held
*/
void __core_alua_attach_tg_pt_gp_mem(
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem,
struct t10_alua_tg_pt_gp *tg_pt_gp)
static void __target_attach_tg_pt_gp(struct se_lun *lun,
struct t10_alua_tg_pt_gp *tg_pt_gp)
{
assert_spin_locked(&lun->lun_tg_pt_gp_lock);
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
tg_pt_gp_mem->tg_pt_gp = tg_pt_gp;
tg_pt_gp_mem->tg_pt_gp_assoc = 1;
list_add_tail(&tg_pt_gp_mem->tg_pt_gp_mem_list,
&tg_pt_gp->tg_pt_gp_mem_list);
lun->lun_tg_pt_gp = tg_pt_gp;
list_add_tail(&lun->lun_tg_pt_gp_link, &tg_pt_gp->tg_pt_gp_lun_list);
tg_pt_gp->tg_pt_gp_members++;
spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
}
/*
* Called with struct t10_alua_tg_pt_gp_member->tg_pt_gp_mem_lock held
*/
static void __core_alua_drop_tg_pt_gp_mem(
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem,
struct t10_alua_tg_pt_gp *tg_pt_gp)
void target_attach_tg_pt_gp(struct se_lun *lun,
struct t10_alua_tg_pt_gp *tg_pt_gp)
{
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
list_del(&tg_pt_gp_mem->tg_pt_gp_mem_list);
tg_pt_gp_mem->tg_pt_gp = NULL;
tg_pt_gp_mem->tg_pt_gp_assoc = 0;
tg_pt_gp->tg_pt_gp_members--;
spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
spin_lock(&lun->lun_tg_pt_gp_lock);
__target_attach_tg_pt_gp(lun, tg_pt_gp);
spin_unlock(&lun->lun_tg_pt_gp_lock);
}
ssize_t core_alua_show_tg_pt_gp_info(struct se_port *port, char *page)
static void __target_detach_tg_pt_gp(struct se_lun *lun,
struct t10_alua_tg_pt_gp *tg_pt_gp)
{
assert_spin_locked(&lun->lun_tg_pt_gp_lock);
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
list_del_init(&lun->lun_tg_pt_gp_link);
tg_pt_gp->tg_pt_gp_members--;
spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
lun->lun_tg_pt_gp = NULL;
}
void target_detach_tg_pt_gp(struct se_lun *lun)
{
struct t10_alua_tg_pt_gp *tg_pt_gp;
spin_lock(&lun->lun_tg_pt_gp_lock);
tg_pt_gp = lun->lun_tg_pt_gp;
if (tg_pt_gp)
__target_detach_tg_pt_gp(lun, tg_pt_gp);
spin_unlock(&lun->lun_tg_pt_gp_lock);
}
ssize_t core_alua_show_tg_pt_gp_info(struct se_lun *lun, char *page)
{
struct config_item *tg_pt_ci;
struct t10_alua_tg_pt_gp *tg_pt_gp;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
ssize_t len = 0;
tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
if (!tg_pt_gp_mem)
return len;
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
spin_lock(&lun->lun_tg_pt_gp_lock);
tg_pt_gp = lun->lun_tg_pt_gp;
if (tg_pt_gp) {
tg_pt_ci = &tg_pt_gp->tg_pt_gp_group.cg_item;
len += sprintf(page, "TG Port Alias: %s\nTG Port Group ID:"
@ -1999,34 +1920,29 @@ ssize_t core_alua_show_tg_pt_gp_info(struct se_port *port, char *page)
&tg_pt_gp->tg_pt_gp_alua_access_state)),
core_alua_dump_status(
tg_pt_gp->tg_pt_gp_alua_access_status),
(atomic_read(&port->sep_tg_pt_secondary_offline)) ?
atomic_read(&lun->lun_tg_pt_secondary_offline) ?
"Offline" : "None",
core_alua_dump_status(port->sep_tg_pt_secondary_stat));
core_alua_dump_status(lun->lun_tg_pt_secondary_stat));
}
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
spin_unlock(&lun->lun_tg_pt_gp_lock);
return len;
}
ssize_t core_alua_store_tg_pt_gp_info(
struct se_port *port,
struct se_lun *lun,
const char *page,
size_t count)
{
struct se_portal_group *tpg;
struct se_lun *lun;
struct se_device *dev = port->sep_lun->lun_se_dev;
struct se_portal_group *tpg = lun->lun_tpg;
struct se_device *dev = lun->lun_se_dev;
struct t10_alua_tg_pt_gp *tg_pt_gp = NULL, *tg_pt_gp_new = NULL;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
unsigned char buf[TG_PT_GROUP_NAME_BUF];
int move = 0;
tpg = port->sep_tpg;
lun = port->sep_lun;
tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
if (!tg_pt_gp_mem)
return 0;
if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH ||
(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE))
return -ENODEV;
if (count > TG_PT_GROUP_NAME_BUF) {
pr_err("ALUA Target Port Group alias too large!\n");
@ -2050,8 +1966,8 @@ ssize_t core_alua_store_tg_pt_gp_info(
return -ENODEV;
}
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
spin_lock(&lun->lun_tg_pt_gp_lock);
tg_pt_gp = lun->lun_tg_pt_gp;
if (tg_pt_gp) {
/*
* Clearing an existing tg_pt_gp association, and replacing
@ -2069,24 +1985,19 @@ ssize_t core_alua_store_tg_pt_gp_info(
&tg_pt_gp->tg_pt_gp_group.cg_item),
tg_pt_gp->tg_pt_gp_id);
__core_alua_drop_tg_pt_gp_mem(tg_pt_gp_mem, tg_pt_gp);
__core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem,
__target_detach_tg_pt_gp(lun, tg_pt_gp);
__target_attach_tg_pt_gp(lun,
dev->t10_alua.default_tg_pt_gp);
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
spin_unlock(&lun->lun_tg_pt_gp_lock);
return count;
}
/*
* Removing existing association of tg_pt_gp_mem with tg_pt_gp
*/
__core_alua_drop_tg_pt_gp_mem(tg_pt_gp_mem, tg_pt_gp);
__target_detach_tg_pt_gp(lun, tg_pt_gp);
move = 1;
}
/*
* Associate tg_pt_gp_mem with tg_pt_gp_new.
*/
__core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, tg_pt_gp_new);
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
__target_attach_tg_pt_gp(lun, tg_pt_gp_new);
spin_unlock(&lun->lun_tg_pt_gp_lock);
pr_debug("Target_Core_ConfigFS: %s %s/tpgt_%hu/%s to ALUA"
" Target Port Group: alua/%s, ID: %hu\n", (move) ?
"Moving" : "Adding", tpg->se_tpg_tfo->tpg_get_wwn(tpg),
@ -2269,11 +2180,8 @@ ssize_t core_alua_store_preferred_bit(
ssize_t core_alua_show_offline_bit(struct se_lun *lun, char *page)
{
if (!lun->lun_sep)
return -ENODEV;
return sprintf(page, "%d\n",
atomic_read(&lun->lun_sep->sep_tg_pt_secondary_offline));
atomic_read(&lun->lun_tg_pt_secondary_offline));
}
ssize_t core_alua_store_offline_bit(
@ -2281,11 +2189,12 @@ ssize_t core_alua_store_offline_bit(
const char *page,
size_t count)
{
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
struct se_device *dev = lun->lun_se_dev;
unsigned long tmp;
int ret;
if (!lun->lun_sep)
if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH ||
(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE))
return -ENODEV;
ret = kstrtoul(page, 0, &tmp);
@ -2298,14 +2207,8 @@ ssize_t core_alua_store_offline_bit(
tmp);
return -EINVAL;
}
tg_pt_gp_mem = lun->lun_sep->sep_alua_tg_pt_gp_mem;
if (!tg_pt_gp_mem) {
pr_err("Unable to locate *tg_pt_gp_mem\n");
return -EINVAL;
}
ret = core_alua_set_tg_pt_secondary_state(tg_pt_gp_mem,
lun->lun_sep, 0, (int)tmp);
ret = core_alua_set_tg_pt_secondary_state(lun, 0, (int)tmp);
if (ret < 0)
return -EINVAL;
@ -2316,7 +2219,7 @@ ssize_t core_alua_show_secondary_status(
struct se_lun *lun,
char *page)
{
return sprintf(page, "%d\n", lun->lun_sep->sep_tg_pt_secondary_stat);
return sprintf(page, "%d\n", lun->lun_tg_pt_secondary_stat);
}
ssize_t core_alua_store_secondary_status(
@ -2339,7 +2242,7 @@ ssize_t core_alua_store_secondary_status(
tmp);
return -EINVAL;
}
lun->lun_sep->sep_tg_pt_secondary_stat = (int)tmp;
lun->lun_tg_pt_secondary_stat = (int)tmp;
return count;
}
@ -2348,8 +2251,7 @@ ssize_t core_alua_show_secondary_write_metadata(
struct se_lun *lun,
char *page)
{
return sprintf(page, "%d\n",
lun->lun_sep->sep_tg_pt_secondary_write_md);
return sprintf(page, "%d\n", lun->lun_tg_pt_secondary_write_md);
}
ssize_t core_alua_store_secondary_write_metadata(
@ -2370,7 +2272,7 @@ ssize_t core_alua_store_secondary_write_metadata(
" %lu\n", tmp);
return -EINVAL;
}
lun->lun_sep->sep_tg_pt_secondary_write_md = (int)tmp;
lun->lun_tg_pt_secondary_write_md = (int)tmp;
return count;
}

14
drivers/target/target_core_alua.h
View File

@ -85,7 +85,6 @@
extern struct kmem_cache *t10_alua_lu_gp_cache;
extern struct kmem_cache *t10_alua_lu_gp_mem_cache;
extern struct kmem_cache *t10_alua_tg_pt_gp_cache;
extern struct kmem_cache *t10_alua_tg_pt_gp_mem_cache;
extern struct kmem_cache *t10_alua_lba_map_cache;
extern struct kmem_cache *t10_alua_lba_map_mem_cache;
@ -94,7 +93,7 @@ extern sense_reason_t target_emulate_set_target_port_groups(struct se_cmd *);
extern sense_reason_t target_emulate_report_referrals(struct se_cmd *);
extern int core_alua_check_nonop_delay(struct se_cmd *);
extern int core_alua_do_port_transition(struct t10_alua_tg_pt_gp *,
struct se_device *, struct se_port *,
struct se_device *, struct se_lun *,
struct se_node_acl *, int, int);
extern char *core_alua_dump_status(int);
extern struct t10_alua_lba_map *core_alua_allocate_lba_map(
@ -117,14 +116,11 @@ extern void core_alua_drop_lu_gp_dev(struct se_device *);
extern struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp(
struct se_device *, const char *, int);
extern int core_alua_set_tg_pt_gp_id(struct t10_alua_tg_pt_gp *, u16);
extern struct t10_alua_tg_pt_gp_member *core_alua_allocate_tg_pt_gp_mem(
struct se_port *);
extern void core_alua_free_tg_pt_gp(struct t10_alua_tg_pt_gp *);
extern void core_alua_free_tg_pt_gp_mem(struct se_port *);
extern void __core_alua_attach_tg_pt_gp_mem(struct t10_alua_tg_pt_gp_member *,
struct t10_alua_tg_pt_gp *);
extern ssize_t core_alua_show_tg_pt_gp_info(struct se_port *, char *);
extern ssize_t core_alua_store_tg_pt_gp_info(struct se_port *, const char *,
extern void target_detach_tg_pt_gp(struct se_lun *);
extern void target_attach_tg_pt_gp(struct se_lun *, struct t10_alua_tg_pt_gp *);
extern ssize_t core_alua_show_tg_pt_gp_info(struct se_lun *, char *);
extern ssize_t core_alua_store_tg_pt_gp_info(struct se_lun *, const char *,
size_t);
extern ssize_t core_alua_show_access_type(struct t10_alua_tg_pt_gp *, char *);
extern ssize_t core_alua_store_access_type(struct t10_alua_tg_pt_gp *,

11
drivers/target/target_core_configfs.c
View File

@ -2889,21 +2889,16 @@ static ssize_t target_core_alua_tg_pt_gp_show_attr_members(
struct t10_alua_tg_pt_gp *tg_pt_gp,
char *page)
{
struct se_port *port;
struct se_portal_group *tpg;
struct se_lun *lun;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
ssize_t len = 0, cur_len;
unsigned char buf[TG_PT_GROUP_NAME_BUF];
memset(buf, 0, TG_PT_GROUP_NAME_BUF);
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list,
tg_pt_gp_mem_list) {
port = tg_pt_gp_mem->tg_pt;
tpg = port->sep_tpg;
lun = port->sep_lun;
list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list,
lun_tg_pt_gp_link) {
struct se_portal_group *tpg = lun->lun_tpg;
cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu"
"/%s\n", tpg->se_tpg_tfo->get_fabric_name(),

179
drivers/target/target_core_device.c
View File

@ -120,8 +120,8 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
(se_cmd->data_direction != DMA_NONE))
return TCM_WRITE_PROTECTED;
se_lun = &se_sess->se_tpg->tpg_virt_lun0;
se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0;
se_lun = se_sess->se_tpg->tpg_virt_lun0;
se_cmd->se_lun = se_sess->se_tpg->tpg_virt_lun0;
se_cmd->orig_fe_lun = 0;
se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
@ -309,7 +309,6 @@ int core_enable_device_list_for_node(
struct se_node_acl *nacl,
struct se_portal_group *tpg)
{
struct se_port *port = lun->lun_sep;
struct se_dev_entry *orig, *new;
new = kzalloc(sizeof(*new), GFP_KERNEL);
@ -320,8 +319,8 @@ int core_enable_device_list_for_node(
atomic_set(&new->ua_count, 0);
spin_lock_init(&new->ua_lock);
INIT_LIST_HEAD(&new->alua_port_list);
INIT_LIST_HEAD(&new->ua_list);
INIT_LIST_HEAD(&new->lun_link);
new->mapped_lun = mapped_lun;
kref_init(&new->pr_kref);
@ -357,10 +356,10 @@ int core_enable_device_list_for_node(
hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist);
mutex_unlock(&nacl->lun_entry_mutex);
spin_lock_bh(&port->sep_alua_lock);
list_del(&orig->alua_port_list);
list_add_tail(&new->alua_port_list, &port->sep_alua_list);
spin_unlock_bh(&port->sep_alua_lock);
spin_lock_bh(&lun->lun_deve_lock);
list_del(&orig->lun_link);
list_add_tail(&new->lun_link, &lun->lun_deve_list);
spin_unlock_bh(&lun->lun_deve_lock);
kref_put(&orig->pr_kref, target_pr_kref_release);
wait_for_completion(&orig->pr_comp);
@ -374,9 +373,9 @@ int core_enable_device_list_for_node(
hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist);
mutex_unlock(&nacl->lun_entry_mutex);
spin_lock_bh(&port->sep_alua_lock);
list_add_tail(&new->alua_port_list, &port->sep_alua_list);
spin_unlock_bh(&port->sep_alua_lock);
spin_lock_bh(&lun->lun_deve_lock);
list_add_tail(&new->lun_link, &lun->lun_deve_list);
spin_unlock_bh(&lun->lun_deve_lock);
return 0;
}
@ -390,23 +389,22 @@ void core_disable_device_list_for_node(
struct se_node_acl *nacl,
struct se_portal_group *tpg)
{
struct se_port *port = lun->lun_sep;
/*
* If the MappedLUN entry is being disabled, the entry in
* port->sep_alua_list must be removed now before clearing the
* lun->lun_deve_list must be removed now before clearing the
* 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 ->
* struct se_lun_acl, but we remove deve->alua_port_list from
* port->sep_alua_list. This also means that active UAs and
* struct se_lun_acl, but we remove deve->lun_link from
* lun->lun_deve_list. This also means that active UAs and
* NodeACL context specific PR metadata for demo-mode
* MappedLUN *deve will be released below..
*/
spin_lock_bh(&port->sep_alua_lock);
list_del(&orig->alua_port_list);
spin_unlock_bh(&port->sep_alua_lock);
spin_lock_bh(&lun->lun_deve_lock);
list_del(&orig->lun_link);
spin_unlock_bh(&lun->lun_deve_lock);
/*
* Disable struct se_dev_entry LUN ACL mapping
*/
@ -458,27 +456,16 @@ void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg)
mutex_unlock(&tpg->acl_node_mutex);
}
static struct se_port *core_alloc_port(struct se_device *dev)
int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev)
{
struct se_port *port, *port_tmp;
port = kzalloc(sizeof(struct se_port), GFP_KERNEL);
if (!port) {
pr_err("Unable to allocate struct se_port\n");
return ERR_PTR(-ENOMEM);
}
INIT_LIST_HEAD(&port->sep_alua_list);
INIT_LIST_HEAD(&port->sep_list);
atomic_set(&port->sep_tg_pt_secondary_offline, 0);
spin_lock_init(&port->sep_alua_lock);
mutex_init(&port->sep_tg_pt_md_mutex);
struct se_lun *tmp;
spin_lock(&dev->se_port_lock);
if (dev->dev_port_count == 0x0000ffff) {
if (dev->export_count == 0x0000ffff) {
pr_warn("Reached dev->dev_port_count =="
" 0x0000ffff\n");
spin_unlock(&dev->se_port_lock);
return ERR_PTR(-ENOSPC);
return -ENOSPC;
}
again:
/*
@ -493,135 +480,23 @@ again:
* 2h Relative port 2, historically known as port B
* 3h to FFFFh Relative port 3 through 65 535
*/
port->sep_rtpi = dev->dev_rpti_counter++;
if (!port->sep_rtpi)
lun->lun_rtpi = dev->dev_rpti_counter++;
if (!lun->lun_rtpi)
goto again;
list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) {
list_for_each_entry(tmp, &dev->dev_sep_list, lun_dev_link) {
/*
* Make sure RELATIVE TARGET PORT IDENTIFIER is unique
* for 16-bit wrap..
*/
if (port->sep_rtpi == port_tmp->sep_rtpi)
if (lun->lun_rtpi == tmp->lun_rtpi)
goto again;
}
spin_unlock(&dev->se_port_lock);
return port;
}
static void core_export_port(
struct se_device *dev,
struct se_portal_group *tpg,
struct se_port *port,
struct se_lun *lun)
{
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL;
spin_lock(&dev->se_port_lock);
spin_lock(&lun->lun_sep_lock);
port->sep_tpg = tpg;
port->sep_lun = lun;
lun->lun_sep = port;
spin_unlock(&lun->lun_sep_lock);
list_add_tail(&port->sep_list, &dev->dev_sep_list);
spin_unlock(&dev->se_port_lock);
if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) &&
!(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) {
tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port);
if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) {
pr_err("Unable to allocate t10_alua_tg_pt"
"_gp_member_t\n");
return;
}
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
__core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem,
dev->t10_alua.default_tg_pt_gp);
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
pr_debug("%s/%s: Adding to default ALUA Target Port"
" Group: alua/default_tg_pt_gp\n",
dev->transport->name, tpg->se_tpg_tfo->get_fabric_name());
}
dev->dev_port_count++;
port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFIER */
}
/*
* Called with struct se_device->se_port_lock spinlock held.
*/
static void core_release_port(struct se_device *dev, struct se_port *port)
__releases(&dev->se_port_lock) __acquires(&dev->se_port_lock)
{
/*
* Wait for any port reference for PR ALL_TG_PT=1 operation
* to complete in __core_scsi3_alloc_registration()
*/
spin_unlock(&dev->se_port_lock);
if (atomic_read(&port->sep_tg_pt_ref_cnt))
cpu_relax();
spin_lock(&dev->se_port_lock);
core_alua_free_tg_pt_gp_mem(port);
list_del(&port->sep_list);
dev->dev_port_count--;
kfree(port);
}
int core_dev_export(
struct se_device *dev,
struct se_portal_group *tpg,
struct se_lun *lun)
{
struct se_hba *hba = dev->se_hba;
struct se_port *port;
port = core_alloc_port(dev);
if (IS_ERR(port))
return PTR_ERR(port);
lun->lun_index = dev->dev_index;
lun->lun_se_dev = dev;
lun->lun_rtpi = port->sep_rtpi;
spin_lock(&hba->device_lock);
dev->export_count++;
spin_unlock(&hba->device_lock);
core_export_port(dev, tpg, port, lun);
return 0;
}
void core_dev_unexport(
struct se_device *dev,
struct se_portal_group *tpg,
struct se_lun *lun)
{
struct se_hba *hba = dev->se_hba;
struct se_port *port = lun->lun_sep;
spin_lock(&lun->lun_sep_lock);
if (lun->lun_se_dev == NULL) {
spin_unlock(&lun->lun_sep_lock);
return;
}
spin_unlock(&lun->lun_sep_lock);
spin_lock(&dev->se_port_lock);
core_release_port(dev, port);
spin_unlock(&dev->se_port_lock);
spin_lock(&hba->device_lock);
dev->export_count--;
spin_unlock(&hba->device_lock);
lun->lun_sep = NULL;
lun->lun_se_dev = NULL;
}
static void se_release_vpd_for_dev(struct se_device *dev)
{
struct t10_vpd *vpd, *vpd_tmp;
@ -783,10 +658,10 @@ int core_dev_add_initiator_node_lun_acl(
}
int core_dev_del_initiator_node_lun_acl(
struct se_portal_group *tpg,
struct se_lun *lun,
struct se_lun_acl *lacl)
{
struct se_portal_group *tpg = lun->lun_tpg;
struct se_node_acl *nacl;
struct se_dev_entry *deve;
@ -930,6 +805,10 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
xcopy_lun->lun_se_dev = dev;
spin_lock_init(&xcopy_lun->lun_sep_lock);
init_completion(&xcopy_lun->lun_ref_comp);
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;
return dev;
}

32
drivers/target/target_core_fabric_configfs.c
View File

@ -91,12 +91,11 @@ static int target_fabric_mappedlun_link(
/*
* Ensure that the source port exists
*/
if (!lun->lun_sep || !lun->lun_sep->sep_tpg) {
pr_err("Source se_lun->lun_sep or lun->lun_sep->sep"
"_tpg does not exist\n");
if (!lun->lun_se_dev) {
pr_err("Source se_lun->lun_se_dev does not exist\n");
return -EINVAL;
}
se_tpg = lun->lun_sep->sep_tpg;
se_tpg = lun->lun_tpg;
nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
tpg_ci = &nacl_ci->ci_group->cg_item;
@ -150,9 +149,8 @@ static int target_fabric_mappedlun_unlink(
struct se_lun_acl, se_lun_group);
struct se_lun *lun = container_of(to_config_group(lun_ci),
struct se_lun, lun_group);
struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg;
return core_dev_del_initiator_node_lun_acl(se_tpg, lun, lacl);
return core_dev_del_initiator_node_lun_acl(lun, lacl);
}
CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun, se_lun_acl);
@ -643,10 +641,10 @@ static ssize_t target_fabric_port_show_attr_alua_tg_pt_gp(
struct se_lun *lun,
char *page)
{
if (!lun || !lun->lun_sep)
if (!lun || !lun->lun_se_dev)
return -ENODEV;
return core_alua_show_tg_pt_gp_info(lun->lun_sep, page);
return core_alua_show_tg_pt_gp_info(lun, page);
}
static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp(
@ -654,10 +652,10 @@ static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp(
const char *page,
size_t count)
{
if (!lun || !lun->lun_sep)
if (!lun || !lun->lun_se_dev)
return -ENODEV;
return core_alua_store_tg_pt_gp_info(lun->lun_sep, page, count);
return core_alua_store_tg_pt_gp_info(lun, page, count);
}
TCM_PORT_ATTR(alua_tg_pt_gp, S_IRUGO | S_IWUSR);
@ -669,7 +667,7 @@ static ssize_t target_fabric_port_show_attr_alua_tg_pt_offline(
struct se_lun *lun,
char *page)
{
if (!lun || !lun->lun_sep)
if (!lun || !lun->lun_se_dev)
return -ENODEV;
return core_alua_show_offline_bit(lun, page);
@ -680,7 +678,7 @@ static ssize_t target_fabric_port_store_attr_alua_tg_pt_offline(
const char *page,
size_t count)
{
if (!lun || !lun->lun_sep)
if (!lun || !lun->lun_se_dev)
return -ENODEV;
return core_alua_store_offline_bit(lun, page, count);
@ -695,7 +693,7 @@ static ssize_t target_fabric_port_show_attr_alua_tg_pt_status(
struct se_lun *lun,
char *page)
{
if (!lun || !lun->lun_sep)
if (!lun || !lun->lun_se_dev)
return -ENODEV;
return core_alua_show_secondary_status(lun, page);
@ -706,7 +704,7 @@ static ssize_t target_fabric_port_store_attr_alua_tg_pt_status(
const char *page,
size_t count)
{
if (!lun || !lun->lun_sep)
if (!lun || !lun->lun_se_dev)
return -ENODEV;
return core_alua_store_secondary_status(lun, page, count);
@ -721,7 +719,7 @@ static ssize_t target_fabric_port_show_attr_alua_tg_pt_write_md(
struct se_lun *lun,
char *page)
{
if (!lun || !lun->lun_sep)
if (!lun || !lun->lun_se_dev)
return -ENODEV;
return core_alua_show_secondary_write_metadata(lun, page);
@ -732,7 +730,7 @@ static ssize_t target_fabric_port_store_attr_alua_tg_pt_write_md(
const char *page,
size_t count)
{
if (!lun || !lun->lun_sep)
if (!lun || !lun->lun_se_dev)
return -ENODEV;
return core_alua_store_secondary_write_metadata(lun, page, count);
@ -811,7 +809,7 @@ static int target_fabric_port_unlink(
{
struct se_lun *lun = container_of(to_config_group(lun_ci),
struct se_lun, lun_group);
struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg;
struct se_portal_group *se_tpg = lun->lun_tpg;
struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
if (tf->tf_ops->fabric_pre_unlink) {

12
drivers/target/target_core_internal.h
View File

@ -21,6 +21,7 @@ extern struct t10_alua_lu_gp *default_lu_gp;
extern struct mutex g_device_mutex;
extern struct list_head g_device_list;
int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev);
struct se_dev_entry *core_get_se_deve_from_rtpi(struct se_node_acl *, u16);
void target_pr_kref_release(struct kref *);
void core_free_device_list_for_node(struct se_node_acl *,
@ -32,10 +33,6 @@ int core_enable_device_list_for_node(struct se_lun *, struct se_lun_acl *,
void core_disable_device_list_for_node(struct se_lun *, struct se_dev_entry *,
struct se_node_acl *, struct se_portal_group *);
void core_clear_lun_from_tpg(struct se_lun *, struct se_portal_group *);
int core_dev_export(struct se_device *, struct se_portal_group *,
struct se_lun *);
void core_dev_unexport(struct se_device *, struct se_portal_group *,
struct se_lun *);
int core_dev_add_lun(struct se_portal_group *, struct se_device *,
struct se_lun *lun);
void core_dev_del_lun(struct se_portal_group *, struct se_lun *);
@ -43,8 +40,8 @@ struct se_lun_acl *core_dev_init_initiator_node_lun_acl(struct se_portal_group *
struct se_node_acl *, u32, int *);
int core_dev_add_initiator_node_lun_acl(struct se_portal_group *,
struct se_lun_acl *, struct se_lun *lun, u32);
int core_dev_del_initiator_node_lun_acl(struct se_portal_group *,
struct se_lun *, struct se_lun_acl *);
int core_dev_del_initiator_node_lun_acl(struct se_lun *,
struct se_lun_acl *);
void core_dev_free_initiator_node_lun_acl(struct se_portal_group *,
struct se_lun_acl *lacl);
int core_dev_setup_virtual_lun0(void);
@ -120,4 +117,7 @@ void target_stat_setup_dev_default_groups(struct se_device *);
void target_stat_setup_port_default_groups(struct se_lun *);
void target_stat_setup_mappedlun_default_groups(struct se_lun_acl *);
/* target_core_xcopy.c */
extern struct se_portal_group xcopy_pt_tpg;
#endif /* TARGET_CORE_INTERNAL_H */

56
drivers/target/target_core_pr.c
View File

@ -642,7 +642,7 @@ static struct t10_pr_registration *__core_scsi3_do_alloc_registration(
pr_reg->pr_reg_deve = deve;
pr_reg->pr_res_mapped_lun = mapped_lun;
pr_reg->pr_aptpl_target_lun = lun->unpacked_lun;
pr_reg->tg_pt_sep_rtpi = lun->lun_sep->sep_rtpi;
pr_reg->tg_pt_sep_rtpi = lun->lun_rtpi;
pr_reg->pr_res_key = sa_res_key;
pr_reg->pr_reg_all_tg_pt = all_tg_pt;
pr_reg->pr_reg_aptpl = aptpl;
@ -680,8 +680,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration(
struct se_dev_entry *deve_tmp;
struct se_node_acl *nacl_tmp;
struct se_lun_acl *lacl_tmp;
struct se_lun *lun_tmp;
struct se_port *port, *port_tmp;
struct se_lun *lun_tmp, *next, *dest_lun;
const struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo;
struct t10_pr_registration *pr_reg, *pr_reg_atp, *pr_reg_tmp, *pr_reg_tmp_safe;
int ret;
@ -704,13 +703,12 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration(
* for ALL_TG_PT=1
*/
spin_lock(&dev->se_port_lock);
list_for_each_entry_safe(port, port_tmp, &dev->dev_sep_list, sep_list) {
atomic_inc_mb(&port->sep_tg_pt_ref_cnt);
list_for_each_entry_safe(lun_tmp, next, &dev->dev_sep_list, lun_dev_link) {
atomic_inc_mb(&lun_tmp->lun_active);
spin_unlock(&dev->se_port_lock);
spin_lock_bh(&port->sep_alua_lock);
list_for_each_entry(deve_tmp, &port->sep_alua_list,
alua_port_list) {
spin_lock_bh(&lun_tmp->lun_deve_lock);
list_for_each_entry(deve_tmp, &lun_tmp->lun_deve_list, lun_link) {
/*
* This pointer will be NULL for demo mode MappedLUNs
* that have not been make explicit via a ConfigFS
@ -720,7 +718,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration(
continue;
lacl_tmp = rcu_dereference_check(deve_tmp->se_lun_acl,
lockdep_is_held(&port->sep_alua_lock));
lockdep_is_held(&lun_tmp->lun_deve_lock));
nacl_tmp = lacl_tmp->se_lun_nacl;
/*
* Skip the matching struct se_node_acl that is allocated
@ -742,7 +740,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration(
continue;
kref_get(&deve_tmp->pr_kref);
spin_unlock_bh(&port->sep_alua_lock);
spin_unlock_bh(&lun_tmp->lun_deve_lock);
/*
* Grab a configfs group dependency that is released
* for the exception path at label out: below, or upon
@ -753,7 +751,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration(
if (ret < 0) {
pr_err("core_scsi3_lunacl_depend"
"_item() failed\n");
atomic_dec_mb(&port->sep_tg_pt_ref_cnt);
atomic_dec_mb(&lun->lun_active);
kref_put(&deve_tmp->pr_kref, target_pr_kref_release);
goto out;
}
@ -764,27 +762,27 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration(
* the original *pr_reg is processed in
* __core_scsi3_add_registration()
*/
lun_tmp = rcu_dereference_check(deve_tmp->se_lun,
dest_lun = rcu_dereference_check(deve_tmp->se_lun,
atomic_read(&deve_tmp->pr_kref.refcount) != 0);
pr_reg_atp = __core_scsi3_do_alloc_registration(dev,
nacl_tmp, lun_tmp, deve_tmp,
nacl_tmp, dest_lun, deve_tmp,
deve_tmp->mapped_lun, NULL,
sa_res_key, all_tg_pt, aptpl);
if (!pr_reg_atp) {
atomic_dec_mb(&port->sep_tg_pt_ref_cnt);
atomic_dec_mb(&lun_tmp->lun_active);
core_scsi3_lunacl_undepend_item(deve_tmp);
goto out;
}
list_add_tail(&pr_reg_atp->pr_reg_atp_mem_list,
&pr_reg->pr_reg_atp_list);
spin_lock_bh(&port->sep_alua_lock);
spin_lock_bh(&lun_tmp->lun_deve_lock);
}
spin_unlock_bh(&port->sep_alua_lock);
spin_unlock_bh(&lun_tmp->lun_deve_lock);
spin_lock(&dev->se_port_lock);
atomic_dec_mb(&port->sep_tg_pt_ref_cnt);
atomic_dec_mb(&lun_tmp->lun_active);
}
spin_unlock(&dev->se_port_lock);
@ -938,7 +936,7 @@ static int __core_scsi3_check_aptpl_registration(
(pr_reg->pr_aptpl_target_lun == target_lun)) {
pr_reg->pr_reg_nacl = nacl;
pr_reg->tg_pt_sep_rtpi = lun->lun_sep->sep_rtpi;
pr_reg->tg_pt_sep_rtpi = lun->lun_rtpi;
list_del(&pr_reg->pr_reg_aptpl_list);
spin_unlock(&pr_tmpl->aptpl_reg_lock);
@ -1465,7 +1463,6 @@ core_scsi3_decode_spec_i_port(
int aptpl)
{
struct se_device *dev = cmd->se_dev;
struct se_port *tmp_port;
struct se_portal_group *dest_tpg = NULL, *tmp_tpg;
struct se_session *se_sess = cmd->se_sess;
struct se_node_acl *dest_node_acl = NULL;
@ -1550,16 +1547,14 @@ core_scsi3_decode_spec_i_port(
ptr = &buf[28];
while (tpdl > 0) {
struct se_lun *dest_lun;
struct se_lun *dest_lun, *tmp_lun;
proto_ident = (ptr[0] & 0x0f);
dest_tpg = NULL;
spin_lock(&dev->se_port_lock);
list_for_each_entry(tmp_port, &dev->dev_sep_list, sep_list) {
tmp_tpg = tmp_port->sep_tpg;
if (!tmp_tpg)
continue;
list_for_each_entry(tmp_lun, &dev->dev_sep_list, lun_dev_link) {
tmp_tpg = tmp_lun->lun_tpg;
/*
* Look for the matching proto_ident provided by
@ -1567,7 +1562,7 @@ core_scsi3_decode_spec_i_port(
*/
if (tmp_tpg->proto_id != proto_ident)
continue;
dest_rtpi = tmp_port->sep_rtpi;
dest_rtpi = tmp_lun->lun_rtpi;
i_str = target_parse_pr_out_transport_id(tmp_tpg,
(const char *)ptr, &tid_len, &iport_ptr);
@ -3119,9 +3114,8 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key,
struct se_session *se_sess = cmd->se_sess;
struct se_device *dev = cmd->se_dev;
struct se_dev_entry *dest_se_deve = NULL;
struct se_lun *se_lun = cmd->se_lun;
struct se_lun *se_lun = cmd->se_lun, *tmp_lun;
struct se_node_acl *pr_res_nacl, *pr_reg_nacl, *dest_node_acl = NULL;
struct se_port *se_port;
struct se_portal_group *se_tpg, *dest_se_tpg = NULL;
const struct target_core_fabric_ops *dest_tf_ops = NULL, *tf_ops;
struct t10_pr_registration *pr_reg, *pr_res_holder, *dest_pr_reg;
@ -3206,12 +3200,10 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key,
}
spin_lock(&dev->se_port_lock);
list_for_each_entry(se_port, &dev->dev_sep_list, sep_list) {
if (se_port->sep_rtpi != rtpi)
continue;
dest_se_tpg = se_port->sep_tpg;
if (!dest_se_tpg)
list_for_each_entry(tmp_lun, &dev->dev_sep_list, lun_dev_link) {
if (tmp_lun->lun_rtpi != rtpi)
continue;
dest_se_tpg = tmp_lun->lun_tpg;
dest_tf_ops = dest_se_tpg->se_tpg_tfo;
if (!dest_tf_ops)
continue;

48
drivers/target/target_core_spc.c
View File

@ -37,10 +37,9 @@
#include "target_core_ua.h"
#include "target_core_xcopy.h"
static void spc_fill_alua_data(struct se_port *port, unsigned char *buf)
static void spc_fill_alua_data(struct se_lun *lun, unsigned char *buf)
{
struct t10_alua_tg_pt_gp *tg_pt_gp;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
/*
* Set SCCS for MAINTENANCE_IN + REPORT_TARGET_PORT_GROUPS.
@ -53,17 +52,11 @@ static void spc_fill_alua_data(struct se_port *port, unsigned char *buf)
*
* See spc4r17 section 6.4.2 Table 135
*/
if (!port)
return;
tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
if (!tg_pt_gp_mem)
return;
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
spin_lock(&lun->lun_tg_pt_gp_lock);
tg_pt_gp = lun->lun_tg_pt_gp;
if (tg_pt_gp)
buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type;
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
spin_unlock(&lun->lun_tg_pt_gp_lock);
}
sense_reason_t
@ -94,7 +87,7 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf)
/*
* Enable SCCS and TPGS fields for Emulated ALUA
*/
spc_fill_alua_data(lun->lun_sep, buf);
spc_fill_alua_data(lun, buf);
/*
* Set Third-Party Copy (3PC) bit to indicate support for EXTENDED_COPY
@ -181,11 +174,9 @@ spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf)
{
struct se_device *dev = cmd->se_dev;
struct se_lun *lun = cmd->se_lun;
struct se_port *port = NULL;
struct se_portal_group *tpg = NULL;
struct t10_alua_lu_gp_member *lu_gp_mem;
struct t10_alua_tg_pt_gp *tg_pt_gp;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
unsigned char *prod = &dev->t10_wwn.model[0];
u32 prod_len;
u32 unit_serial_len, off = 0;
@ -267,18 +258,15 @@ check_t10_vend_desc:
/* Header size for Designation descriptor */
len += (id_len + 4);
off += (id_len + 4);
/*
* struct se_port is only set for INQUIRY VPD=1 through $FABRIC_MOD
*/
port = lun->lun_sep;
if (port) {
if (1) {
struct t10_alua_lu_gp *lu_gp;
u32 padding, scsi_name_len, scsi_target_len;
u16 lu_gp_id = 0;
u16 tg_pt_gp_id = 0;
u16 tpgt;
tpg = port->sep_tpg;
tpg = lun->lun_tpg;
/*
* Relative target port identifer, see spc4r17
* section 7.7.3.7
@ -298,8 +286,8 @@ check_t10_vend_desc:
/* Skip over Obsolete field in RTPI payload
* in Table 472 */
off += 2;
buf[off++] = ((port->sep_rtpi >> 8) & 0xff);
buf[off++] = (port->sep_rtpi & 0xff);
buf[off++] = ((lun->lun_rtpi >> 8) & 0xff);
buf[off++] = (lun->lun_rtpi & 0xff);
len += 8; /* Header size + Designation descriptor */
/*
* Target port group identifier, see spc4r17
@ -308,18 +296,14 @@ check_t10_vend_desc:
* Get the PROTOCOL IDENTIFIER as defined by spc4r17
* section 7.5.1 Table 362
*/
tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
if (!tg_pt_gp_mem)
goto check_lu_gp;
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
spin_lock(&lun->lun_tg_pt_gp_lock);
tg_pt_gp = lun->lun_tg_pt_gp;
if (!tg_pt_gp) {
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
spin_unlock(&lun->lun_tg_pt_gp_lock);
goto check_lu_gp;
}
tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id;
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
spin_unlock(&lun->lun_tg_pt_gp_lock);
buf[off] = tpg->proto_id << 4;
buf[off++] |= 0x1; /* CODE SET == Binary */
@ -694,7 +678,7 @@ static sense_reason_t
spc_emulate_inquiry(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct se_portal_group *tpg = cmd->se_lun->lun_sep->sep_tpg;
struct se_portal_group *tpg = cmd->se_lun->lun_tpg;
unsigned char *rbuf;
unsigned char *cdb = cmd->t_task_cdb;
unsigned char *buf;
@ -708,7 +692,7 @@ spc_emulate_inquiry(struct se_cmd *cmd)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
if (dev == tpg->tpg_virt_lun0.lun_se_dev)
if (dev == tpg->tpg_virt_lun0->lun_se_dev)
buf[0] = 0x3f; /* Not connected */
else
buf[0] = dev->transport->get_device_type(dev);

299
drivers/target/target_core_stat.c
View File

@ -106,7 +106,7 @@ static ssize_t target_stat_scsi_dev_show_attr_ports(
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
return snprintf(page, PAGE_SIZE, "%u\n", dev->dev_port_count);
return snprintf(page, PAGE_SIZE, "%u\n", dev->export_count);
}
DEV_STAT_SCSI_DEV_ATTR_RO(ports);
@ -542,19 +542,13 @@ static ssize_t target_stat_scsi_port_show_attr_inst(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
struct se_device *dev = lun->lun_se_dev;
struct se_hba *hba;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
hba = dev->se_hba;
ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%u\n", dev->se_hba->hba_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -564,17 +558,13 @@ static ssize_t target_stat_scsi_port_show_attr_dev(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
struct se_device *dev = lun->lun_se_dev;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -584,16 +574,13 @@ static ssize_t target_stat_scsi_port_show_attr_indx(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
ret = snprintf(page, PAGE_SIZE, "%u\n", sep->sep_index);
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_rtpi);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -603,20 +590,13 @@ static ssize_t target_stat_scsi_port_show_attr_role(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_device *dev = lun->lun_se_dev;
struct se_port *sep;
ssize_t ret;
if (!dev)
return -ENODEV;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
ret = snprintf(page, PAGE_SIZE, "%s%u\n", "Device", dev->dev_index);
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%s%u\n", "Device", dev->dev_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -626,17 +606,15 @@ static ssize_t target_stat_scsi_port_show_attr_busy_count(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
dev = lun->lun_se_dev;
if (dev) {
/* FIXME: scsiPortBusyStatuses */
ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
}
/* FIXME: scsiPortBusyStatuses */
ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -685,19 +663,13 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_inst(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_device *dev = lun->lun_se_dev;
struct se_port *sep;
struct se_hba *hba;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
hba = dev->se_hba;
ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%u\n", dev->se_hba->hba_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -707,17 +679,13 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_dev(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_device *dev = lun->lun_se_dev;
struct se_port *sep;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -727,16 +695,13 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_indx(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
ret = snprintf(page, PAGE_SIZE, "%u\n", sep->sep_index);
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_rtpi);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -746,20 +711,16 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_name(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
struct se_portal_group *tpg;
ssize_t ret;
struct se_portal_group *tpg = lun->lun_tpg;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
tpg = sep->sep_tpg;
ret = snprintf(page, PAGE_SIZE, "%sPort#%u\n",
tpg->se_tpg_tfo->get_fabric_name(), sep->sep_index);
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%sPort#%u\n",
tpg->se_tpg_tfo->get_fabric_name(),
lun->lun_rtpi);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -769,21 +730,16 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_port_index(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
struct se_portal_group *tpg;
ssize_t ret;
struct se_portal_group *tpg = lun->lun_tpg;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
tpg = sep->sep_tpg;
ret = snprintf(page, PAGE_SIZE, "%s%s%d\n",
tpg->se_tpg_tfo->tpg_get_wwn(tpg), "+t+",
tpg->se_tpg_tfo->tpg_get_tag(tpg));
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%s%s%d\n",
tpg->se_tpg_tfo->tpg_get_wwn(tpg), "+t+",
tpg->se_tpg_tfo->tpg_get_tag(tpg));
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -793,17 +749,13 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_in_cmds(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
ret = snprintf(page, PAGE_SIZE, "%llu\n", sep->sep_stats.cmd_pdus);
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_stats.cmd_pdus);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -813,18 +765,14 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_write_mbytes(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
ret = snprintf(page, PAGE_SIZE, "%u\n",
(u32)(sep->sep_stats.rx_data_octets >> 20));
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%u\n",
(u32)(lun->lun_stats.rx_data_octets >> 20));
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -834,18 +782,14 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_read_mbytes(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
ret = snprintf(page, PAGE_SIZE, "%u\n",
(u32)(sep->sep_stats.tx_data_octets >> 20));
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%u\n",
(u32)(lun->lun_stats.tx_data_octets >> 20));
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -855,18 +799,15 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_hs_in_cmds(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
dev = lun->lun_se_dev;
if (dev) {
/* FIXME: scsiTgtPortHsInCommands */
ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
}
/* FIXME: scsiTgtPortHsInCommands */
ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -921,20 +862,13 @@ static ssize_t target_stat_scsi_transport_show_attr_inst(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_device *dev = lun->lun_se_dev;
struct se_port *sep;
struct se_hba *hba;
ssize_t ret;
struct se_device *dev;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
hba = dev->se_hba;
ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%u\n", dev->se_hba->hba_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -944,20 +878,17 @@ static ssize_t target_stat_scsi_transport_show_attr_device(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
struct se_portal_group *tpg;
ssize_t ret;
struct se_device *dev;
struct se_portal_group *tpg = lun->lun_tpg;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
dev = lun->lun_se_dev;
if (dev) {
/* scsiTransportType */
ret = snprintf(page, PAGE_SIZE, "scsiTransport%s\n",
tpg->se_tpg_tfo->get_fabric_name());
}
tpg = sep->sep_tpg;
/* scsiTransportType */
ret = snprintf(page, PAGE_SIZE, "scsiTransport%s\n",
tpg->se_tpg_tfo->get_fabric_name());
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -967,19 +898,15 @@ static ssize_t target_stat_scsi_transport_show_attr_indx(
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
struct se_portal_group *tpg;
ssize_t ret;
struct se_device *dev;
struct se_portal_group *tpg = lun->lun_tpg;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
tpg = sep->sep_tpg;
ret = snprintf(page, PAGE_SIZE, "%u\n",
tpg->se_tpg_tfo->tpg_get_inst_index(tpg));
dev = lun->lun_se_dev;
if (dev)
ret = snprintf(page, PAGE_SIZE, "%u\n",
tpg->se_tpg_tfo->tpg_get_inst_index(tpg));
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@ -990,24 +917,20 @@ static ssize_t target_stat_scsi_transport_show_attr_dev_name(
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_device *dev = lun->lun_se_dev;
struct se_port *sep;
struct se_portal_group *tpg;
struct se_portal_group *tpg = lun->lun_tpg;
struct t10_wwn *wwn;
ssize_t ret;
ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
sep = lun->lun_sep;
if (!sep) {
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
dev = lun->lun_se_dev;
if (dev) {
wwn = &dev->t10_wwn;
/* scsiTransportDevName */
ret = snprintf(page, PAGE_SIZE, "%s+%s\n",
tpg->se_tpg_tfo->tpg_get_wwn(tpg),
(strlen(wwn->unit_serial)) ? wwn->unit_serial :
wwn->vendor);
}
tpg = sep->sep_tpg;
wwn = &dev->t10_wwn;
/* scsiTransportDevName */
ret = snprintf(page, PAGE_SIZE, "%s+%s\n",
tpg->se_tpg_tfo->tpg_get_wwn(tpg),
(strlen(wwn->unit_serial)) ? wwn->unit_serial :
wwn->vendor);
spin_unlock(&lun->lun_sep_lock);
return ret;
}

95
drivers/target/target_core_tpg.c
View File

@ -40,6 +40,7 @@
#include <target/target_core_fabric.h>
#include "target_core_internal.h"
#include "target_core_alua.h"
#include "target_core_pr.h"
extern struct se_device *g_lun0_dev;
@ -484,32 +485,14 @@ static void core_tpg_lun_ref_release(struct percpu_ref *ref)
complete(&lun->lun_ref_comp);
}
static int core_tpg_setup_virtual_lun0(struct se_portal_group *se_tpg)
{
/* Set in core_dev_setup_virtual_lun0() */
struct se_device *dev = g_lun0_dev;
struct se_lun *lun = &se_tpg->tpg_virt_lun0;
u32 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY;
int ret;
lun->unpacked_lun = 0;
atomic_set(&lun->lun_acl_count, 0);
spin_lock_init(&lun->lun_sep_lock);
init_completion(&lun->lun_ref_comp);
ret = core_tpg_add_lun(se_tpg, lun, lun_access, dev);
if (ret < 0)
return ret;
return 0;
}
int core_tpg_register(
const struct target_core_fabric_ops *tfo,
struct se_wwn *se_wwn,
struct se_portal_group *se_tpg,
int proto_id)
{
int ret;
INIT_HLIST_HEAD(&se_tpg->tpg_lun_hlist);
se_tpg->proto_id = proto_id;
se_tpg->se_tpg_tfo = tfo;
@ -523,8 +506,16 @@ int core_tpg_register(
mutex_init(&se_tpg->acl_node_mutex);
if (se_tpg->proto_id >= 0) {
if (core_tpg_setup_virtual_lun0(se_tpg) < 0)
return -ENOMEM;
se_tpg->tpg_virt_lun0 = core_tpg_alloc_lun(se_tpg, 0);
if (IS_ERR(se_tpg->tpg_virt_lun0))
return PTR_ERR(se_tpg->tpg_virt_lun0);
ret = core_tpg_add_lun(se_tpg, se_tpg->tpg_virt_lun0,
TRANSPORT_LUNFLAGS_READ_ONLY, g_lun0_dev);
if (ret < 0) {
kfree(se_tpg->tpg_virt_lun0);
return ret;
}
}
spin_lock_bh(&tpg_lock);
@ -575,8 +566,10 @@ int core_tpg_deregister(struct se_portal_group *se_tpg)
kfree(nacl);
}
if (se_tpg->proto_id >= 0)
core_tpg_remove_lun(se_tpg, &se_tpg->tpg_virt_lun0);
if (se_tpg->proto_id >= 0) {
core_tpg_remove_lun(se_tpg, se_tpg->tpg_virt_lun0);
kfree_rcu(se_tpg->tpg_virt_lun0, rcu_head);
}
return 0;
}
@ -607,6 +600,15 @@ struct se_lun *core_tpg_alloc_lun(
atomic_set(&lun->lun_acl_count, 0);
spin_lock_init(&lun->lun_sep_lock);
init_completion(&lun->lun_ref_comp);
INIT_LIST_HEAD(&lun->lun_deve_list);
INIT_LIST_HEAD(&lun->lun_dev_link);
atomic_set(&lun->lun_tg_pt_secondary_offline, 0);
spin_lock_init(&lun->lun_deve_lock);
mutex_init(&lun->lun_tg_pt_md_mutex);
INIT_LIST_HEAD(&lun->lun_tg_pt_gp_link);
spin_lock_init(&lun->lun_tg_pt_gp_lock);
atomic_set(&lun->lun_active, 0);
lun->lun_tpg = tpg;
return lun;
}
@ -622,21 +624,40 @@ int core_tpg_add_lun(
ret = percpu_ref_init(&lun->lun_ref, core_tpg_lun_ref_release, 0,
GFP_KERNEL);
if (ret < 0)
return ret;
goto out;
ret = core_dev_export(dev, tpg, lun);
if (ret < 0) {
percpu_ref_exit(&lun->lun_ref);
return ret;
}
ret = core_alloc_rtpi(lun, dev);
if (ret)
goto out_kill_ref;
if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) &&
!(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE))
target_attach_tg_pt_gp(lun, dev->t10_alua.default_tg_pt_gp);
mutex_lock(&tpg->tpg_lun_mutex);
spin_lock(&lun->lun_sep_lock);
lun->lun_index = dev->dev_index;
lun->lun_se_dev = dev;
spin_unlock(&lun->lun_sep_lock);
spin_lock(&dev->se_port_lock);
rcu_assign_pointer(lun->lun_se_dev, dev);
dev->export_count++;
list_add_tail(&lun->lun_dev_link, &dev->dev_sep_list);
spin_unlock(&dev->se_port_lock);
lun->lun_access = lun_access;
if (!(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE))
hlist_add_head_rcu(&lun->link, &tpg->tpg_lun_hlist);
mutex_unlock(&tpg->tpg_lun_mutex);
return 0;
out_kill_ref:
percpu_ref_exit(&lun->lun_ref);
out:
return ret;
}
void core_tpg_remove_lun(
@ -648,9 +669,19 @@ void core_tpg_remove_lun(
core_clear_lun_from_tpg(lun, tpg);
transport_clear_lun_ref(lun);
core_dev_unexport(lun->lun_se_dev, tpg, lun);
mutex_lock(&tpg->tpg_lun_mutex);
if (lun->lun_se_dev) {
while (atomic_read(&lun->lun_active))
cpu_relax();
target_detach_tg_pt_gp(lun);
spin_lock(&dev->se_port_lock);
list_del(&lun->lun_dev_link);
dev->export_count--;
rcu_assign_pointer(lun->lun_se_dev, NULL);
spin_unlock(&dev->se_port_lock);
}
if (!(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE))
hlist_del_rcu(&lun->link);
mutex_unlock(&tpg->tpg_lun_mutex);

34
drivers/target/target_core_transport.c
View File

@ -60,7 +60,6 @@ struct kmem_cache *t10_pr_reg_cache;
struct kmem_cache *t10_alua_lu_gp_cache;
struct kmem_cache *t10_alua_lu_gp_mem_cache;
struct kmem_cache *t10_alua_tg_pt_gp_cache;
struct kmem_cache *t10_alua_tg_pt_gp_mem_cache;
struct kmem_cache *t10_alua_lba_map_cache;
struct kmem_cache *t10_alua_lba_map_mem_cache;
@ -119,16 +118,6 @@ int init_se_kmem_caches(void)
"cache failed\n");
goto out_free_lu_gp_mem_cache;
}
t10_alua_tg_pt_gp_mem_cache = kmem_cache_create(
"t10_alua_tg_pt_gp_mem_cache",
sizeof(struct t10_alua_tg_pt_gp_member),
__alignof__(struct t10_alua_tg_pt_gp_member),
0, NULL);
if (!t10_alua_tg_pt_gp_mem_cache) {
pr_err("kmem_cache_create() for t10_alua_tg_pt_gp_"
"mem_t failed\n");
goto out_free_tg_pt_gp_cache;
}
t10_alua_lba_map_cache = kmem_cache_create(
"t10_alua_lba_map_cache",
sizeof(struct t10_alua_lba_map),
@ -136,7 +125,7 @@ int init_se_kmem_caches(void)
if (!t10_alua_lba_map_cache) {
pr_err("kmem_cache_create() for t10_alua_lba_map_"
"cache failed\n");
goto out_free_tg_pt_gp_mem_cache;
goto out_free_tg_pt_gp_cache;
}
t10_alua_lba_map_mem_cache = kmem_cache_create(
"t10_alua_lba_map_mem_cache",
@ -159,8 +148,6 @@ out_free_lba_map_mem_cache:
kmem_cache_destroy(t10_alua_lba_map_mem_cache);
out_free_lba_map_cache:
kmem_cache_destroy(t10_alua_lba_map_cache);
out_free_tg_pt_gp_mem_cache:
kmem_cache_destroy(t10_alua_tg_pt_gp_mem_cache);
out_free_tg_pt_gp_cache:
kmem_cache_destroy(t10_alua_tg_pt_gp_cache);
out_free_lu_gp_mem_cache:
@ -186,7 +173,6 @@ void release_se_kmem_caches(void)
kmem_cache_destroy(t10_alua_lu_gp_cache);
kmem_cache_destroy(t10_alua_lu_gp_mem_cache);
kmem_cache_destroy(t10_alua_tg_pt_gp_cache);
kmem_cache_destroy(t10_alua_tg_pt_gp_mem_cache);
kmem_cache_destroy(t10_alua_lba_map_cache);
kmem_cache_destroy(t10_alua_lba_map_mem_cache);
}
@ -1277,8 +1263,7 @@ target_setup_cmd_from_cdb(struct se_cmd *cmd, unsigned char *cdb)
cmd->se_cmd_flags |= SCF_SUPPORTED_SAM_OPCODE;
spin_lock(&cmd->se_lun->lun_sep_lock);
if (cmd->se_lun->lun_sep)
cmd->se_lun->lun_sep->sep_stats.cmd_pdus++;
cmd->se_lun->lun_stats.cmd_pdus++;
spin_unlock(&cmd->se_lun->lun_sep_lock);
return 0;
}
@ -2076,10 +2061,7 @@ queue_rsp:
switch (cmd->data_direction) {
case DMA_FROM_DEVICE:
spin_lock(&cmd->se_lun->lun_sep_lock);
if (cmd->se_lun->lun_sep) {
cmd->se_lun->lun_sep->sep_stats.tx_data_octets +=
cmd->data_length;
}
cmd->se_lun->lun_stats.tx_data_octets += cmd->data_length;
spin_unlock(&cmd->se_lun->lun_sep_lock);
/*
* Perform READ_STRIP of PI using software emulation when
@ -2104,20 +2086,14 @@ queue_rsp:
break;
case DMA_TO_DEVICE:
spin_lock(&cmd->se_lun->lun_sep_lock);
if (cmd->se_lun->lun_sep) {
cmd->se_lun->lun_sep->sep_stats.rx_data_octets +=
cmd->data_length;
}
cmd->se_lun->lun_stats.rx_data_octets += cmd->data_length;
spin_unlock(&cmd->se_lun->lun_sep_lock);
/*
* Check if we need to send READ payload for BIDI-COMMAND
*/
if (cmd->se_cmd_flags & SCF_BIDI) {
spin_lock(&cmd->se_lun->lun_sep_lock);
if (cmd->se_lun->lun_sep) {
cmd->se_lun->lun_sep->sep_stats.tx_data_octets +=
cmd->data_length;
}
cmd->se_lun->lun_stats.tx_data_octets += cmd->data_length;
spin_unlock(&cmd->se_lun->lun_sep_lock);
ret = cmd->se_tfo->queue_data_in(cmd);
if (ret == -EAGAIN || ret == -ENOMEM)

17
drivers/target/target_core_xcopy.c
View File

@ -348,8 +348,7 @@ struct xcopy_pt_cmd {
unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER];
};
static struct se_port xcopy_pt_port;
static struct se_portal_group xcopy_pt_tpg;
struct se_portal_group xcopy_pt_tpg;
static struct se_session xcopy_pt_sess;
static struct se_node_acl xcopy_pt_nacl;
@ -439,17 +438,11 @@ int target_xcopy_setup_pt(void)
return -ENOMEM;
}
memset(&xcopy_pt_port, 0, sizeof(struct se_port));
INIT_LIST_HEAD(&xcopy_pt_port.sep_alua_list);
INIT_LIST_HEAD(&xcopy_pt_port.sep_list);
mutex_init(&xcopy_pt_port.sep_tg_pt_md_mutex);
memset(&xcopy_pt_tpg, 0, sizeof(struct se_portal_group));
INIT_LIST_HEAD(&xcopy_pt_tpg.se_tpg_node);
INIT_LIST_HEAD(&xcopy_pt_tpg.acl_node_list);
INIT_LIST_HEAD(&xcopy_pt_tpg.tpg_sess_list);
xcopy_pt_port.sep_tpg = &xcopy_pt_tpg;
xcopy_pt_tpg.se_tpg_tfo = &xcopy_pt_tfo;
memset(&xcopy_pt_nacl, 0, sizeof(struct se_node_acl));
@ -490,10 +483,6 @@ static void target_xcopy_setup_pt_port(
*/
if (remote_port) {
xpt_cmd->remote_port = remote_port;
pt_cmd->se_lun->lun_sep = &xcopy_pt_port;
pr_debug("Setup emulated remote DEST xcopy_pt_port: %p to"
" cmd->se_lun->lun_sep for X-COPY data PUSH\n",
pt_cmd->se_lun->lun_sep);
} else {
pt_cmd->se_lun = ec_cmd->se_lun;
pt_cmd->se_dev = ec_cmd->se_dev;
@ -513,10 +502,6 @@ static void target_xcopy_setup_pt_port(
*/
if (remote_port) {
xpt_cmd->remote_port = remote_port;
pt_cmd->se_lun->lun_sep = &xcopy_pt_port;
pr_debug("Setup emulated remote SRC xcopy_pt_port: %p to"
" cmd->se_lun->lun_sep for X-COPY data PULL\n",
pt_cmd->se_lun->lun_sep);
} else {
pt_cmd->se_lun = ec_cmd->se_lun;
pt_cmd->se_dev = ec_cmd->se_dev;

74
include/target/target_core_base.h
View File

@ -304,22 +304,13 @@ struct t10_alua_tg_pt_gp {
struct se_device *tg_pt_gp_dev;
struct config_group tg_pt_gp_group;
struct list_head tg_pt_gp_list;
struct list_head tg_pt_gp_mem_list;
struct se_port *tg_pt_gp_alua_port;
struct list_head tg_pt_gp_lun_list;
struct se_lun *tg_pt_gp_alua_lun;
struct se_node_acl *tg_pt_gp_alua_nacl;
struct delayed_work tg_pt_gp_transition_work;
struct completion *tg_pt_gp_transition_complete;
};
struct t10_alua_tg_pt_gp_member {
bool tg_pt_gp_assoc;
atomic_t tg_pt_gp_mem_ref_cnt;
spinlock_t tg_pt_gp_mem_lock;
struct t10_alua_tg_pt_gp *tg_pt_gp;
struct se_port *tg_pt;
struct list_head tg_pt_gp_mem_list;
};
struct t10_vpd {
unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
int protocol_identifier_set;
@ -650,6 +641,7 @@ struct se_dev_entry {
#define DEF_PR_REG_ACTIVE 1
unsigned long deve_flags;
struct list_head alua_port_list;
struct list_head lun_link;
struct list_head ua_list;
struct hlist_node link;
struct rcu_head rcu_head;
@ -697,7 +689,14 @@ struct se_port_stat_grps {
struct config_group scsi_transport_group;
};
struct scsi_port_stats {
u32 cmd_pdus;
u64 tx_data_octets;
u64 rx_data_octets;
};
struct se_lun {
/* RELATIVE TARGET PORT IDENTIFER */
u16 lun_rtpi;
#define SE_LUN_LINK_MAGIC 0xffff7771
u32 lun_link_magic;
@ -707,12 +706,30 @@ struct se_lun {
u32 lun_index;
atomic_t lun_acl_count;
spinlock_t lun_sep_lock;
struct se_device *lun_se_dev;
struct se_port *lun_sep;
struct se_device __rcu *lun_se_dev;
struct list_head lun_deve_list;
spinlock_t lun_deve_lock;
/* ALUA state */
int lun_tg_pt_secondary_stat;
int lun_tg_pt_secondary_write_md;
atomic_t lun_tg_pt_secondary_offline;
struct mutex lun_tg_pt_md_mutex;
/* ALUA target port group linkage */
struct list_head lun_tg_pt_gp_link;
struct t10_alua_tg_pt_gp *lun_tg_pt_gp;
spinlock_t lun_tg_pt_gp_lock;
atomic_t lun_active;
struct se_portal_group *lun_tpg;
struct scsi_port_stats lun_stats;
struct config_group lun_group;
struct se_port_stat_grps port_stat_grps;
struct completion lun_ref_comp;
struct percpu_ref lun_ref;
struct list_head lun_dev_link;
struct hlist_node link;
struct rcu_head rcu_head;
};
@ -737,7 +754,6 @@ struct se_device {
#define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
#define DF_USING_UDEV_PATH 0x00000008
#define DF_USING_ALIAS 0x00000010
u32 dev_port_count;
/* Physical device queue depth */
u32 queue_depth;
/* Used for SPC-2 reservations enforce of ISIDs */
@ -754,7 +770,7 @@ struct se_device {
atomic_t dev_ordered_id;
atomic_t dev_ordered_sync;
atomic_t dev_qf_count;
int export_count;
u32 export_count;
spinlock_t delayed_cmd_lock;
spinlock_t execute_task_lock;
spinlock_t dev_reservation_lock;
@ -821,32 +837,6 @@ struct se_hba {
struct target_backend *backend;
};
struct scsi_port_stats {
u64 cmd_pdus;
u64 tx_data_octets;
u64 rx_data_octets;
};
struct se_port {
/* RELATIVE TARGET PORT IDENTIFER */
u16 sep_rtpi;
int sep_tg_pt_secondary_stat;
int sep_tg_pt_secondary_write_md;
u32 sep_index;
struct scsi_port_stats sep_stats;
/* Used for ALUA Target Port Groups membership */
atomic_t sep_tg_pt_secondary_offline;
/* Used for PR ALL_TG_PT=1 */
atomic_t sep_tg_pt_ref_cnt;
spinlock_t sep_alua_lock;
struct mutex sep_tg_pt_md_mutex;
struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
struct se_lun *sep_lun;
struct se_portal_group *sep_tpg;
struct list_head sep_alua_list;
struct list_head sep_list;
};
struct se_tpg_np {
struct se_portal_group *tpg_np_parent;
struct config_group tpg_np_group;
@ -872,7 +862,7 @@ struct se_portal_group {
/* linked list for initiator ACL list */
struct list_head acl_node_list;
struct hlist_head tpg_lun_hlist;
struct se_lun tpg_virt_lun0;
struct se_lun *tpg_virt_lun0;
/* List of TCM sessions associated wth this TPG */
struct list_head tpg_sess_list;
/* Pointer to $FABRIC_MOD dependent code */