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target: kill struct se_subsystem_dev

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Simplify the code a lot by killing the superflous struct se_subsystem_dev.
Instead se_device is allocated early on by the backend driver, which allocates
it as part of its own per-device structure, borrowing the scheme that is for
example used for inode allocation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig 2012-10-08 00:03:19 -04:00 committed by Nicholas Bellinger
parent 3d70f8c617
commit 0fd97ccf45
26 changed files with 1048 additions and 1908 deletions
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1
drivers/target/loopback/tcm_loop.h
View file

@ -53,7 +53,6 @@ struct tcm_loop_hba {
struct se_hba_s *se_hba;
struct se_lun *tl_hba_lun;
struct se_port *tl_hba_lun_sep;
struct se_device_s *se_dev_hba_ptr;
struct tcm_loop_nexus *tl_nexus;
struct device dev;
struct Scsi_Host *sh;

152
drivers/target/target_core_alua.c
View file

@ -61,7 +61,7 @@ struct t10_alua_lu_gp *default_lu_gp;
*/
int target_emulate_report_target_port_groups(struct se_cmd *cmd)
{
struct se_subsystem_dev *su_dev = cmd->se_dev->se_sub_dev;
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;
@ -86,8 +86,8 @@ int target_emulate_report_target_port_groups(struct se_cmd *cmd)
}
buf = transport_kmap_data_sg(cmd);
spin_lock(&su_dev->t10_alua.tg_pt_gps_lock);
list_for_each_entry(tg_pt_gp, &su_dev->t10_alua.tg_pt_gps_list,
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
list_for_each_entry(tg_pt_gp, &dev->t10_alua.tg_pt_gps_list,
tg_pt_gp_list) {
/*
* Check if the Target port group and Target port descriptor list
@ -160,7 +160,7 @@ int target_emulate_report_target_port_groups(struct se_cmd *cmd)
}
spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
}
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
/*
* Set the RETURN DATA LENGTH set in the header of the DataIN Payload
*/
@ -203,7 +203,6 @@ int target_emulate_report_target_port_groups(struct se_cmd *cmd)
int target_emulate_set_target_port_groups(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
struct se_port *port, *l_port = cmd->se_lun->lun_sep;
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;
@ -303,9 +302,9 @@ int target_emulate_set_target_port_groups(struct se_cmd *cmd)
* Locate the matching target port group ID from
* the global tg_pt_gp list
*/
spin_lock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
list_for_each_entry(tg_pt_gp,
&su_dev->t10_alua.tg_pt_gps_list,
&dev->t10_alua.tg_pt_gps_list,
tg_pt_gp_list) {
if (!tg_pt_gp->tg_pt_gp_valid_id)
continue;
@ -315,18 +314,18 @@ int target_emulate_set_target_port_groups(struct se_cmd *cmd)
atomic_inc(&tg_pt_gp->tg_pt_gp_ref_cnt);
smp_mb__after_atomic_inc();
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
rc = core_alua_do_port_transition(tg_pt_gp,
dev, l_port, nacl,
alua_access_state, 1);
spin_lock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
atomic_dec(&tg_pt_gp->tg_pt_gp_ref_cnt);
smp_mb__after_atomic_dec();
break;
}
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
/*
* If not matching target port group ID can be located
* throw an exception with ASCQ: INVALID_PARAMETER_LIST
@ -758,8 +757,7 @@ static int core_alua_update_tpg_primary_metadata(
int primary_state,
unsigned char *md_buf)
{
struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev;
struct t10_wwn *wwn = &su_dev->t10_wwn;
struct t10_wwn *wwn = &tg_pt_gp->tg_pt_gp_dev->t10_wwn;
char path[ALUA_METADATA_PATH_LEN];
int len;
@ -899,7 +897,6 @@ int core_alua_do_port_transition(
{
struct se_device *dev;
struct se_port *port;
struct se_subsystem_dev *su_dev;
struct se_node_acl *nacl;
struct t10_alua_lu_gp *lu_gp;
struct t10_alua_lu_gp_member *lu_gp_mem, *local_lu_gp_mem;
@ -949,14 +946,13 @@ int core_alua_do_port_transition(
lu_gp_mem_list) {
dev = lu_gp_mem->lu_gp_mem_dev;
su_dev = dev->se_sub_dev;
atomic_inc(&lu_gp_mem->lu_gp_mem_ref_cnt);
smp_mb__after_atomic_inc();
spin_unlock(&lu_gp->lu_gp_lock);
spin_lock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
list_for_each_entry(tg_pt_gp,
&su_dev->t10_alua.tg_pt_gps_list,
&dev->t10_alua.tg_pt_gps_list,
tg_pt_gp_list) {
if (!tg_pt_gp->tg_pt_gp_valid_id)
@ -981,7 +977,7 @@ int core_alua_do_port_transition(
}
atomic_inc(&tg_pt_gp->tg_pt_gp_ref_cnt);
smp_mb__after_atomic_inc();
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
/*
* core_alua_do_transition_tg_pt() will always return
* success.
@ -989,11 +985,11 @@ int core_alua_do_port_transition(
core_alua_do_transition_tg_pt(tg_pt_gp, port,
nacl, md_buf, new_state, explict);
spin_lock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
atomic_dec(&tg_pt_gp->tg_pt_gp_ref_cnt);
smp_mb__after_atomic_dec();
}
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
spin_lock(&lu_gp->lu_gp_lock);
atomic_dec(&lu_gp_mem->lu_gp_mem_ref_cnt);
@ -1268,8 +1264,7 @@ void core_alua_free_lu_gp(struct t10_alua_lu_gp *lu_gp)
void core_alua_free_lu_gp_mem(struct se_device *dev)
{
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
struct t10_alua *alua = &su_dev->t10_alua;
struct t10_alua *alua = &dev->t10_alua;
struct t10_alua_lu_gp *lu_gp;
struct t10_alua_lu_gp_member *lu_gp_mem;
@ -1358,10 +1353,8 @@ void __core_alua_drop_lu_gp_mem(
spin_unlock(&lu_gp->lu_gp_lock);
}
struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp(
struct se_subsystem_dev *su_dev,
const char *name,
int def_group)
struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp(struct se_device *dev,
const char *name, int def_group)
{
struct t10_alua_tg_pt_gp *tg_pt_gp;
@ -1375,7 +1368,7 @@ struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp(
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);
tg_pt_gp->tg_pt_gp_su_dev = su_dev;
tg_pt_gp->tg_pt_gp_dev = dev;
tg_pt_gp->tg_pt_gp_md_buf_len = ALUA_MD_BUF_LEN;
atomic_set(&tg_pt_gp->tg_pt_gp_alua_access_state,
ALUA_ACCESS_STATE_ACTIVE_OPTMIZED);
@ -1392,14 +1385,14 @@ struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp(
tg_pt_gp->tg_pt_gp_implict_trans_secs = ALUA_DEFAULT_IMPLICT_TRANS_SECS;
if (def_group) {
spin_lock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
tg_pt_gp->tg_pt_gp_id =
su_dev->t10_alua.alua_tg_pt_gps_counter++;
dev->t10_alua.alua_tg_pt_gps_counter++;
tg_pt_gp->tg_pt_gp_valid_id = 1;
su_dev->t10_alua.alua_tg_pt_gps_count++;
dev->t10_alua.alua_tg_pt_gps_count++;
list_add_tail(&tg_pt_gp->tg_pt_gp_list,
&su_dev->t10_alua.tg_pt_gps_list);
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
&dev->t10_alua.tg_pt_gps_list);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
}
return tg_pt_gp;
@ -1409,9 +1402,10 @@ int core_alua_set_tg_pt_gp_id(
struct t10_alua_tg_pt_gp *tg_pt_gp,
u16 tg_pt_gp_id)
{
struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev;
struct se_device *dev = tg_pt_gp->tg_pt_gp_dev;
struct t10_alua_tg_pt_gp *tg_pt_gp_tmp;
u16 tg_pt_gp_id_tmp;
/*
* The tg_pt_gp->tg_pt_gp_id may only be set once..
*/
@ -1421,19 +1415,19 @@ int core_alua_set_tg_pt_gp_id(
return -EINVAL;
}
spin_lock(&su_dev->t10_alua.tg_pt_gps_lock);
if (su_dev->t10_alua.alua_tg_pt_gps_count == 0x0000ffff) {
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
if (dev->t10_alua.alua_tg_pt_gps_count == 0x0000ffff) {
pr_err("Maximum ALUA alua_tg_pt_gps_count:"
" 0x0000ffff reached\n");
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
kmem_cache_free(t10_alua_tg_pt_gp_cache, tg_pt_gp);
return -ENOSPC;
}
again:
tg_pt_gp_id_tmp = (tg_pt_gp_id != 0) ? tg_pt_gp_id :
su_dev->t10_alua.alua_tg_pt_gps_counter++;
dev->t10_alua.alua_tg_pt_gps_counter++;
list_for_each_entry(tg_pt_gp_tmp, &su_dev->t10_alua.tg_pt_gps_list,
list_for_each_entry(tg_pt_gp_tmp, &dev->t10_alua.tg_pt_gps_list,
tg_pt_gp_list) {
if (tg_pt_gp_tmp->tg_pt_gp_id == tg_pt_gp_id_tmp) {
if (!tg_pt_gp_id)
@ -1441,7 +1435,7 @@ int core_alua_set_tg_pt_gp_id(
pr_err("ALUA Target Port Group ID: %hu already"
" exists, ignoring request\n", tg_pt_gp_id);
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
return -EINVAL;
}
}
@ -1449,9 +1443,9 @@ int core_alua_set_tg_pt_gp_id(
tg_pt_gp->tg_pt_gp_id = tg_pt_gp_id_tmp;
tg_pt_gp->tg_pt_gp_valid_id = 1;
list_add_tail(&tg_pt_gp->tg_pt_gp_list,
&su_dev->t10_alua.tg_pt_gps_list);
su_dev->t10_alua.alua_tg_pt_gps_count++;
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
&dev->t10_alua.tg_pt_gps_list);
dev->t10_alua.alua_tg_pt_gps_count++;
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
return 0;
}
@ -1480,8 +1474,9 @@ struct t10_alua_tg_pt_gp_member *core_alua_allocate_tg_pt_gp_mem(
void core_alua_free_tg_pt_gp(
struct t10_alua_tg_pt_gp *tg_pt_gp)
{
struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev;
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;
/*
* Once we have reached this point, config_item_put() has already
* been called from target_core_alua_drop_tg_pt_gp().
@ -1490,10 +1485,11 @@ void core_alua_free_tg_pt_gp(
* no assications *OR* explict ALUA via SET_TARGET_PORT_GROUPS
* can be made while we are releasing struct t10_alua_tg_pt_gp.
*/
spin_lock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
list_del(&tg_pt_gp->tg_pt_gp_list);
su_dev->t10_alua.alua_tg_pt_gps_counter--;
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
dev->t10_alua.alua_tg_pt_gps_counter--;
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
/*
* Allow a struct t10_alua_tg_pt_gp_member * referenced by
* core_alua_get_tg_pt_gp_by_name() in
@ -1502,6 +1498,7 @@ void core_alua_free_tg_pt_gp(
*/
while (atomic_read(&tg_pt_gp->tg_pt_gp_ref_cnt))
cpu_relax();
/*
* Release reference to struct t10_alua_tg_pt_gp from all associated
* struct se_port.
@ -1525,9 +1522,9 @@ void core_alua_free_tg_pt_gp(
* default_tg_pt_gp.
*/
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
if (tg_pt_gp != su_dev->t10_alua.default_tg_pt_gp) {
if (tg_pt_gp != dev->t10_alua.default_tg_pt_gp) {
__core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem,
su_dev->t10_alua.default_tg_pt_gp);
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);
@ -1541,8 +1538,7 @@ void core_alua_free_tg_pt_gp(
void core_alua_free_tg_pt_gp_mem(struct se_port *port)
{
struct se_subsystem_dev *su_dev = port->sep_lun->lun_se_dev->se_sub_dev;
struct t10_alua *alua = &su_dev->t10_alua;
struct t10_alua *alua = &port->sep_lun->lun_se_dev->t10_alua;
struct t10_alua_tg_pt_gp *tg_pt_gp;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
@ -1574,25 +1570,24 @@ void core_alua_free_tg_pt_gp_mem(struct se_port *port)
}
static struct t10_alua_tg_pt_gp *core_alua_get_tg_pt_gp_by_name(
struct se_subsystem_dev *su_dev,
const char *name)
struct se_device *dev, const char *name)
{
struct t10_alua_tg_pt_gp *tg_pt_gp;
struct config_item *ci;
spin_lock(&su_dev->t10_alua.tg_pt_gps_lock);
list_for_each_entry(tg_pt_gp, &su_dev->t10_alua.tg_pt_gps_list,
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
list_for_each_entry(tg_pt_gp, &dev->t10_alua.tg_pt_gps_list,
tg_pt_gp_list) {
if (!tg_pt_gp->tg_pt_gp_valid_id)
continue;
ci = &tg_pt_gp->tg_pt_gp_group.cg_item;
if (!strcmp(config_item_name(ci), name)) {
atomic_inc(&tg_pt_gp->tg_pt_gp_ref_cnt);
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
return tg_pt_gp;
}
}
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
return NULL;
}
@ -1600,11 +1595,11 @@ static struct t10_alua_tg_pt_gp *core_alua_get_tg_pt_gp_by_name(
static void core_alua_put_tg_pt_gp_from_name(
struct t10_alua_tg_pt_gp *tg_pt_gp)
{
struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev;
struct se_device *dev = tg_pt_gp->tg_pt_gp_dev;
spin_lock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
atomic_dec(&tg_pt_gp->tg_pt_gp_ref_cnt);
spin_unlock(&su_dev->t10_alua.tg_pt_gps_lock);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
}
/*
@ -1640,9 +1635,8 @@ static void __core_alua_drop_tg_pt_gp_mem(
ssize_t core_alua_show_tg_pt_gp_info(struct se_port *port, char *page)
{
struct se_subsystem_dev *su_dev = port->sep_lun->lun_se_dev->se_sub_dev;
struct config_item *tg_pt_ci;
struct t10_alua *alua = &su_dev->t10_alua;
struct t10_alua *alua = &port->sep_lun->lun_se_dev->t10_alua;
struct t10_alua_tg_pt_gp *tg_pt_gp;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
ssize_t len = 0;
@ -1683,7 +1677,7 @@ ssize_t core_alua_store_tg_pt_gp_info(
{
struct se_portal_group *tpg;
struct se_lun *lun;
struct se_subsystem_dev *su_dev = port->sep_lun->lun_se_dev->se_sub_dev;
struct se_device *dev = port->sep_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];
@ -1692,7 +1686,7 @@ ssize_t core_alua_store_tg_pt_gp_info(
tpg = port->sep_tpg;
lun = port->sep_lun;
if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) {
if (dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) {
pr_warn("SPC3_ALUA_EMULATED not enabled for"
" %s/tpgt_%hu/%s\n", tpg->se_tpg_tfo->tpg_get_wwn(tpg),
tpg->se_tpg_tfo->tpg_get_tag(tpg),
@ -1716,7 +1710,7 @@ ssize_t core_alua_store_tg_pt_gp_info(
* struct t10_alua_tg_pt_gp. This reference is released with
* core_alua_put_tg_pt_gp_from_name() below.
*/
tg_pt_gp_new = core_alua_get_tg_pt_gp_by_name(su_dev,
tg_pt_gp_new = core_alua_get_tg_pt_gp_by_name(dev,
strstrip(buf));
if (!tg_pt_gp_new)
return -ENODEV;
@ -1750,7 +1744,7 @@ ssize_t core_alua_store_tg_pt_gp_info(
__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,
su_dev->t10_alua.default_tg_pt_gp);
dev->t10_alua.default_tg_pt_gp);
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
return count;
@ -2054,32 +2048,29 @@ ssize_t core_alua_store_secondary_write_metadata(
return count;
}
int core_setup_alua(struct se_device *dev, int force_pt)
int core_setup_alua(struct se_device *dev)
{
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
struct t10_alua *alua = &su_dev->t10_alua;
struct t10_alua *alua = &dev->t10_alua;
struct t10_alua_lu_gp_member *lu_gp_mem;
/*
* If this device is from Target_Core_Mod/pSCSI, use the ALUA logic
* of the Underlying SCSI hardware. In Linux/SCSI terms, this can
* cause a problem because libata and some SATA RAID HBAs appear
* under Linux/SCSI, but emulate SCSI logic themselves.
*/
if (((dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) &&
!(dev->se_sub_dev->se_dev_attrib.emulate_alua)) || force_pt) {
alua->alua_type = SPC_ALUA_PASSTHROUGH;
alua->alua_state_check = &core_alua_state_check_nop;
if ((dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE) ||
(dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV &&
!dev->dev_attrib.emulate_alua)) {
pr_debug("%s: Using SPC_ALUA_PASSTHROUGH, no ALUA"
" emulation\n", dev->transport->name);
return 0;
}
/*
* If SPC-3 or above is reported by real or emulated struct se_device,
* use emulated ALUA.
*/
if (dev->transport->get_device_rev(dev) >= SCSI_3) {
alua->alua_type = SPC_ALUA_PASSTHROUGH;
alua->alua_state_check = &core_alua_state_check_nop;
} else if (dev->transport->get_device_rev(dev) >= SCSI_3) {
pr_debug("%s: Enabling ALUA Emulation for SPC-3"
" device\n", dev->transport->name);
/*
* Associate this struct se_device with the default ALUA
* LUN Group.
@ -2099,10 +2090,11 @@ int core_setup_alua(struct se_device *dev, int force_pt)
" core/alua/lu_gps/default_lu_gp\n",
dev->transport->name);
} else {
alua->alua_type = SPC2_ALUA_DISABLED;
alua->alua_state_check = &core_alua_state_check_nop;
pr_debug("%s: Disabling ALUA Emulation for SPC-2"
" device\n", dev->transport->name);
alua->alua_type = SPC2_ALUA_DISABLED;
alua->alua_state_check = &core_alua_state_check_nop;
}
return 0;

4
drivers/target/target_core_alua.h
View file

@ -91,7 +91,7 @@ extern void __core_alua_drop_lu_gp_mem(struct t10_alua_lu_gp_member *,
struct t10_alua_lu_gp *);
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_subsystem_dev *, const char *, int);
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 *);
@ -131,6 +131,6 @@ extern ssize_t core_alua_show_secondary_write_metadata(struct se_lun *,
char *);
extern ssize_t core_alua_store_secondary_write_metadata(struct se_lun *,
const char *, size_t);
extern int core_setup_alua(struct se_device *, int);
extern int core_setup_alua(struct se_device *);
#endif /* TARGET_CORE_ALUA_H */

526
drivers/target/target_core_configfs.c
View file

File diff suppressed because it is too large Load diff

613
drivers/target/target_core_device.c
View file

@ -50,11 +50,7 @@
#include "target_core_pr.h"
#include "target_core_ua.h"
static void se_dev_start(struct se_device *dev);
static void se_dev_stop(struct se_device *dev);
static struct se_hba *lun0_hba;
static struct se_subsystem_dev *lun0_su_dev;
/* not static, needed by tpg.c */
struct se_device *g_lun0_dev;
@ -136,15 +132,6 @@ int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
se_cmd->orig_fe_lun = 0;
se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
}
/*
* Determine if the struct se_lun is online.
* FIXME: Check for LUN_RESET + UNIT Attention
*/
if (se_dev_check_online(se_lun->lun_se_dev) != 0) {
se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
return -ENODEV;
}
/* Directly associate cmd with se_dev */
se_cmd->se_dev = se_lun->lun_se_dev;
@ -202,14 +189,6 @@ int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
return -ENODEV;
}
/*
* Determine if the struct se_lun is online.
* FIXME: Check for LUN_RESET + UNIT Attention
*/
if (se_dev_check_online(se_lun->lun_se_dev) != 0) {
se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
return -ENODEV;
}
/* Directly associate cmd with se_dev */
se_cmd->se_dev = se_lun->lun_se_dev;
@ -565,7 +544,6 @@ static void core_export_port(
struct se_port *port,
struct se_lun *lun)
{
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL;
spin_lock(&dev->se_port_lock);
@ -578,7 +556,7 @@ static void core_export_port(
list_add_tail(&port->sep_list, &dev->dev_sep_list);
spin_unlock(&dev->se_port_lock);
if (su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
if (dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
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"
@ -587,7 +565,7 @@ static void core_export_port(
}
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
__core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem,
su_dev->t10_alua.default_tg_pt_gp);
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",
@ -625,6 +603,7 @@ int core_dev_export(
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);
@ -632,9 +611,11 @@ int core_dev_export(
return PTR_ERR(port);
lun->lun_se_dev = dev;
se_dev_start(dev);
atomic_inc(&dev->dev_export_obj.obj_access_count);
spin_lock(&hba->device_lock);
dev->export_count++;
spin_unlock(&hba->device_lock);
core_export_port(dev, tpg, port, lun);
return 0;
}
@ -644,6 +625,7 @@ void core_dev_unexport(
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);
@ -654,11 +636,13 @@ void core_dev_unexport(
spin_unlock(&lun->lun_sep_lock);
spin_lock(&dev->se_port_lock);
atomic_dec(&dev->dev_export_obj.obj_access_count);
core_release_port(dev, port);
spin_unlock(&dev->se_port_lock);
se_dev_stop(dev);
spin_lock(&hba->device_lock);
dev->export_count--;
spin_unlock(&hba->device_lock);
lun->lun_se_dev = NULL;
}
@ -725,127 +709,17 @@ int target_report_luns(struct se_cmd *se_cmd)
return 0;
}
/* se_release_device_for_hba():
*
*
*/
void se_release_device_for_hba(struct se_device *dev)
{
struct se_hba *hba = dev->se_hba;
if ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) ||
(dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) ||
(dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN) ||
(dev->dev_status & TRANSPORT_DEVICE_OFFLINE_ACTIVATED) ||
(dev->dev_status & TRANSPORT_DEVICE_OFFLINE_DEACTIVATED))
se_dev_stop(dev);
if (dev->dev_ptr) {
destroy_workqueue(dev->tmr_wq);
if (dev->transport->free_device)
dev->transport->free_device(dev->dev_ptr);
}
spin_lock(&hba->device_lock);
list_del(&dev->dev_list);
hba->dev_count--;
spin_unlock(&hba->device_lock);
core_scsi3_free_all_registrations(dev);
se_release_vpd_for_dev(dev);
kfree(dev);
}
void se_release_vpd_for_dev(struct se_device *dev)
static void se_release_vpd_for_dev(struct se_device *dev)
{
struct t10_vpd *vpd, *vpd_tmp;
spin_lock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock);
spin_lock(&dev->t10_wwn.t10_vpd_lock);
list_for_each_entry_safe(vpd, vpd_tmp,
&dev->se_sub_dev->t10_wwn.t10_vpd_list, vpd_list) {
&dev->t10_wwn.t10_vpd_list, vpd_list) {
list_del(&vpd->vpd_list);
kfree(vpd);
}
spin_unlock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock);
}
/* se_free_virtual_device():
*
* Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers.
*/
int se_free_virtual_device(struct se_device *dev, struct se_hba *hba)
{
if (!list_empty(&dev->dev_sep_list))
dump_stack();
core_alua_free_lu_gp_mem(dev);
se_release_device_for_hba(dev);
return 0;
}
static void se_dev_start(struct se_device *dev)
{
struct se_hba *hba = dev->se_hba;
spin_lock(&hba->device_lock);
atomic_inc(&dev->dev_obj.obj_access_count);
if (atomic_read(&dev->dev_obj.obj_access_count) == 1) {
if (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) {
dev->dev_status &= ~TRANSPORT_DEVICE_DEACTIVATED;
dev->dev_status |= TRANSPORT_DEVICE_ACTIVATED;
} else if (dev->dev_status &
TRANSPORT_DEVICE_OFFLINE_DEACTIVATED) {
dev->dev_status &=
~TRANSPORT_DEVICE_OFFLINE_DEACTIVATED;
dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_ACTIVATED;
}
}
spin_unlock(&hba->device_lock);
}
static void se_dev_stop(struct se_device *dev)
{
struct se_hba *hba = dev->se_hba;
spin_lock(&hba->device_lock);
atomic_dec(&dev->dev_obj.obj_access_count);
if (atomic_read(&dev->dev_obj.obj_access_count) == 0) {
if (dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) {
dev->dev_status &= ~TRANSPORT_DEVICE_ACTIVATED;
dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED;
} else if (dev->dev_status &
TRANSPORT_DEVICE_OFFLINE_ACTIVATED) {
dev->dev_status &= ~TRANSPORT_DEVICE_OFFLINE_ACTIVATED;
dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_DEACTIVATED;
}
}
spin_unlock(&hba->device_lock);
}
int se_dev_check_online(struct se_device *dev)
{
unsigned long flags;
int ret;
spin_lock_irqsave(&dev->dev_status_lock, flags);
ret = ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) ||
(dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED)) ? 0 : 1;
spin_unlock_irqrestore(&dev->dev_status_lock, flags);
return ret;
}
int se_dev_check_shutdown(struct se_device *dev)
{
int ret;
spin_lock_irq(&dev->dev_status_lock);
ret = (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN);
spin_unlock_irq(&dev->dev_status_lock);
return ret;
spin_unlock(&dev->t10_wwn.t10_vpd_lock);
}
static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size)
@ -866,72 +740,13 @@ static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size)
return aligned_max_sectors;
}
void se_dev_set_default_attribs(
struct se_device *dev,
struct se_dev_limits *dev_limits)
{
struct queue_limits *limits = &dev_limits->limits;
dev->se_sub_dev->se_dev_attrib.emulate_dpo = DA_EMULATE_DPO;
dev->se_sub_dev->se_dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE;
dev->se_sub_dev->se_dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ;
dev->se_sub_dev->se_dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE;
dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL;
dev->se_sub_dev->se_dev_attrib.emulate_tas = DA_EMULATE_TAS;
dev->se_sub_dev->se_dev_attrib.emulate_tpu = DA_EMULATE_TPU;
dev->se_sub_dev->se_dev_attrib.emulate_tpws = DA_EMULATE_TPWS;
dev->se_sub_dev->se_dev_attrib.emulate_reservations = DA_EMULATE_RESERVATIONS;
dev->se_sub_dev->se_dev_attrib.emulate_alua = DA_EMULATE_ALUA;
dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS;
dev->se_sub_dev->se_dev_attrib.is_nonrot = DA_IS_NONROT;
dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD;
/*
* The TPU=1 and TPWS=1 settings will be set in TCM/IBLOCK
* iblock_create_virtdevice() from struct queue_limits values
* if blk_queue_discard()==1
*/
dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT;
dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count =
DA_MAX_UNMAP_BLOCK_DESC_COUNT;
dev->se_sub_dev->se_dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT;
dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment =
DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT;
/*
* block_size is based on subsystem plugin dependent requirements.
*/
dev->se_sub_dev->se_dev_attrib.hw_block_size = limits->logical_block_size;
dev->se_sub_dev->se_dev_attrib.block_size = limits->logical_block_size;
/*
* Align max_hw_sectors down to PAGE_SIZE I/O transfers
*/
limits->max_hw_sectors = se_dev_align_max_sectors(limits->max_hw_sectors,
limits->logical_block_size);
dev->se_sub_dev->se_dev_attrib.hw_max_sectors = limits->max_hw_sectors;
/*
* Set fabric_max_sectors, which is reported in block limits
* VPD page (B0h).
*/
dev->se_sub_dev->se_dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS;
/*
* Set optimal_sectors from fabric_max_sectors, which can be
* lowered via configfs.
*/
dev->se_sub_dev->se_dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS;
/*
* queue_depth is based on subsystem plugin dependent requirements.
*/
dev->se_sub_dev->se_dev_attrib.hw_queue_depth = dev_limits->hw_queue_depth;
dev->se_sub_dev->se_dev_attrib.queue_depth = dev_limits->queue_depth;
}
int se_dev_set_max_unmap_lba_count(
struct se_device *dev,
u32 max_unmap_lba_count)
{
dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = max_unmap_lba_count;
dev->dev_attrib.max_unmap_lba_count = max_unmap_lba_count;
pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n",
dev, dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count);
dev, dev->dev_attrib.max_unmap_lba_count);
return 0;
}
@ -939,10 +754,10 @@ int se_dev_set_max_unmap_block_desc_count(
struct se_device *dev,
u32 max_unmap_block_desc_count)
{
dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count =
dev->dev_attrib.max_unmap_block_desc_count =
max_unmap_block_desc_count;
pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n",
dev, dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count);
dev, dev->dev_attrib.max_unmap_block_desc_count);
return 0;
}
@ -950,9 +765,9 @@ int se_dev_set_unmap_granularity(
struct se_device *dev,
u32 unmap_granularity)
{
dev->se_sub_dev->se_dev_attrib.unmap_granularity = unmap_granularity;
dev->dev_attrib.unmap_granularity = unmap_granularity;
pr_debug("dev[%p]: Set unmap_granularity: %u\n",
dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity);
dev, dev->dev_attrib.unmap_granularity);
return 0;
}
@ -960,9 +775,9 @@ int se_dev_set_unmap_granularity_alignment(
struct se_device *dev,
u32 unmap_granularity_alignment)
{
dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment;
dev->dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment;
pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n",
dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment);
dev, dev->dev_attrib.unmap_granularity_alignment);
return 0;
}
@ -993,9 +808,9 @@ int se_dev_set_emulate_fua_write(struct se_device *dev, int flag)
pr_err("emulate_fua_write not supported for pSCSI\n");
return -EINVAL;
}
dev->se_sub_dev->se_dev_attrib.emulate_fua_write = flag;
dev->dev_attrib.emulate_fua_write = flag;
pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n",
dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_write);
dev, dev->dev_attrib.emulate_fua_write);
return 0;
}
@ -1025,9 +840,9 @@ int se_dev_set_emulate_write_cache(struct se_device *dev, int flag)
pr_err("emulate_write_cache not supported for pSCSI\n");
return -EINVAL;
}
dev->se_sub_dev->se_dev_attrib.emulate_write_cache = flag;
dev->dev_attrib.emulate_write_cache = flag;
pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n",
dev, dev->se_sub_dev->se_dev_attrib.emulate_write_cache);
dev, dev->dev_attrib.emulate_write_cache);
return 0;
}
@ -1038,16 +853,15 @@ int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag)
return -EINVAL;
}
if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
if (dev->export_count) {
pr_err("dev[%p]: Unable to change SE Device"
" UA_INTRLCK_CTRL while dev_export_obj: %d count"
" exists\n", dev,
atomic_read(&dev->dev_export_obj.obj_access_count));
" UA_INTRLCK_CTRL while export_count is %d\n",
dev, dev->export_count);
return -EINVAL;
}
dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = flag;
dev->dev_attrib.emulate_ua_intlck_ctrl = flag;
pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n",
dev, dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl);
dev, dev->dev_attrib.emulate_ua_intlck_ctrl);
return 0;
}
@ -1059,15 +873,15 @@ int se_dev_set_emulate_tas(struct se_device *dev, int flag)
return -EINVAL;
}
if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
if (dev->export_count) {
pr_err("dev[%p]: Unable to change SE Device TAS while"
" dev_export_obj: %d count exists\n", dev,
atomic_read(&dev->dev_export_obj.obj_access_count));
" export_count is %d\n",
dev, dev->export_count);
return -EINVAL;
}
dev->se_sub_dev->se_dev_attrib.emulate_tas = flag;
dev->dev_attrib.emulate_tas = flag;
pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n",
dev, (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? "Enabled" : "Disabled");
dev, (dev->dev_attrib.emulate_tas) ? "Enabled" : "Disabled");
return 0;
}
@ -1082,12 +896,12 @@ int se_dev_set_emulate_tpu(struct se_device *dev, int flag)
* We expect this value to be non-zero when generic Block Layer
* Discard supported is detected iblock_create_virtdevice().
*/
if (flag && !dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) {
if (flag && !dev->dev_attrib.max_unmap_block_desc_count) {
pr_err("Generic Block Discard not supported\n");
return -ENOSYS;
}
dev->se_sub_dev->se_dev_attrib.emulate_tpu = flag;
dev->dev_attrib.emulate_tpu = flag;
pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n",
dev, flag);
return 0;
@ -1103,12 +917,12 @@ int se_dev_set_emulate_tpws(struct se_device *dev, int flag)
* We expect this value to be non-zero when generic Block Layer
* Discard supported is detected iblock_create_virtdevice().
*/
if (flag && !dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) {
if (flag && !dev->dev_attrib.max_unmap_block_desc_count) {
pr_err("Generic Block Discard not supported\n");
return -ENOSYS;
}
dev->se_sub_dev->se_dev_attrib.emulate_tpws = flag;
dev->dev_attrib.emulate_tpws = flag;
pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n",
dev, flag);
return 0;
@ -1120,9 +934,9 @@ int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag)
pr_err("Illegal value %d\n", flag);
return -EINVAL;
}
dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = flag;
dev->dev_attrib.enforce_pr_isids = flag;
pr_debug("dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev,
(dev->se_sub_dev->se_dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled");
(dev->dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled");
return 0;
}
@ -1132,7 +946,7 @@ int se_dev_set_is_nonrot(struct se_device *dev, int flag)
printk(KERN_ERR "Illegal value %d\n", flag);
return -EINVAL;
}
dev->se_sub_dev->se_dev_attrib.is_nonrot = flag;
dev->dev_attrib.is_nonrot = flag;
pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n",
dev, flag);
return 0;
@ -1145,7 +959,7 @@ int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag)
" reordering not implemented\n", dev);
return -ENOSYS;
}
dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = flag;
dev->dev_attrib.emulate_rest_reord = flag;
pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag);
return 0;
}
@ -1155,10 +969,10 @@ int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag)
*/
int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth)
{
if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
if (dev->export_count) {
pr_err("dev[%p]: Unable to change SE Device TCQ while"
" dev_export_obj: %d count exists\n", dev,
atomic_read(&dev->dev_export_obj.obj_access_count));
" export_count is %d\n",
dev, dev->export_count);
return -EINVAL;
}
if (!queue_depth) {
@ -1168,26 +982,26 @@ int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth)
}
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) {
if (queue_depth > dev->dev_attrib.hw_queue_depth) {
pr_err("dev[%p]: Passed queue_depth: %u"
" exceeds TCM/SE_Device TCQ: %u\n",
dev, queue_depth,
dev->se_sub_dev->se_dev_attrib.hw_queue_depth);
dev->dev_attrib.hw_queue_depth);
return -EINVAL;
}
} else {
if (queue_depth > dev->se_sub_dev->se_dev_attrib.queue_depth) {
if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) {
if (queue_depth > dev->dev_attrib.queue_depth) {
if (queue_depth > dev->dev_attrib.hw_queue_depth) {
pr_err("dev[%p]: Passed queue_depth:"
" %u exceeds TCM/SE_Device MAX"
" TCQ: %u\n", dev, queue_depth,
dev->se_sub_dev->se_dev_attrib.hw_queue_depth);
dev->dev_attrib.hw_queue_depth);
return -EINVAL;
}
}
}
dev->se_sub_dev->se_dev_attrib.queue_depth = dev->queue_depth = queue_depth;
dev->dev_attrib.queue_depth = dev->queue_depth = queue_depth;
pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n",
dev, queue_depth);
return 0;
@ -1195,10 +1009,10 @@ int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth)
int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors)
{
if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
if (dev->export_count) {
pr_err("dev[%p]: Unable to change SE Device"
" fabric_max_sectors while dev_export_obj: %d count exists\n",
dev, atomic_read(&dev->dev_export_obj.obj_access_count));
" fabric_max_sectors while export_count is %d\n",
dev, dev->export_count);
return -EINVAL;
}
if (!fabric_max_sectors) {
@ -1213,11 +1027,11 @@ int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors)
return -EINVAL;
}
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
if (fabric_max_sectors > dev->se_sub_dev->se_dev_attrib.hw_max_sectors) {
if (fabric_max_sectors > dev->dev_attrib.hw_max_sectors) {
pr_err("dev[%p]: Passed fabric_max_sectors: %u"
" greater than TCM/SE_Device max_sectors:"
" %u\n", dev, fabric_max_sectors,
dev->se_sub_dev->se_dev_attrib.hw_max_sectors);
dev->dev_attrib.hw_max_sectors);
return -EINVAL;
}
} else {
@ -1233,9 +1047,9 @@ int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors)
* Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks()
*/
fabric_max_sectors = se_dev_align_max_sectors(fabric_max_sectors,
dev->se_sub_dev->se_dev_attrib.block_size);
dev->dev_attrib.block_size);
dev->se_sub_dev->se_dev_attrib.fabric_max_sectors = fabric_max_sectors;
dev->dev_attrib.fabric_max_sectors = fabric_max_sectors;
pr_debug("dev[%p]: SE Device max_sectors changed to %u\n",
dev, fabric_max_sectors);
return 0;
@ -1243,10 +1057,10 @@ int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors)
int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors)
{
if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
if (dev->export_count) {
pr_err("dev[%p]: Unable to change SE Device"
" optimal_sectors while dev_export_obj: %d count exists\n",
dev, atomic_read(&dev->dev_export_obj.obj_access_count));
" optimal_sectors while export_count is %d\n",
dev, dev->export_count);
return -EINVAL;
}
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
@ -1254,14 +1068,14 @@ int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors)
" changed for TCM/pSCSI\n", dev);
return -EINVAL;
}
if (optimal_sectors > dev->se_sub_dev->se_dev_attrib.fabric_max_sectors) {
if (optimal_sectors > dev->dev_attrib.fabric_max_sectors) {
pr_err("dev[%p]: Passed optimal_sectors %u cannot be"
" greater than fabric_max_sectors: %u\n", dev,
optimal_sectors, dev->se_sub_dev->se_dev_attrib.fabric_max_sectors);
optimal_sectors, dev->dev_attrib.fabric_max_sectors);
return -EINVAL;
}
dev->se_sub_dev->se_dev_attrib.optimal_sectors = optimal_sectors;
dev->dev_attrib.optimal_sectors = optimal_sectors;
pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n",
dev, optimal_sectors);
return 0;
@ -1269,10 +1083,10 @@ int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors)
int se_dev_set_block_size(struct se_device *dev, u32 block_size)
{
if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
if (dev->export_count) {
pr_err("dev[%p]: Unable to change SE Device block_size"
" while dev_export_obj: %d count exists\n", dev,
atomic_read(&dev->dev_export_obj.obj_access_count));
" while export_count is %d\n",
dev, dev->export_count);
return -EINVAL;
}
@ -1293,7 +1107,7 @@ int se_dev_set_block_size(struct se_device *dev, u32 block_size)
return -EINVAL;
}
dev->se_sub_dev->se_dev_attrib.block_size = block_size;
dev->dev_attrib.block_size = block_size;
pr_debug("dev[%p]: SE Device block_size changed to %u\n",
dev, block_size);
return 0;
@ -1307,12 +1121,6 @@ struct se_lun *core_dev_add_lun(
struct se_lun *lun_p;
int rc;
if (atomic_read(&dev->dev_access_obj.obj_access_count) != 0) {
pr_err("Unable to export struct se_device while dev_access_obj: %d\n",
atomic_read(&dev->dev_access_obj.obj_access_count));
return ERR_PTR(-EACCES);
}
lun_p = core_tpg_pre_addlun(tpg, lun);
if (IS_ERR(lun_p))
return lun_p;
@ -1568,12 +1376,220 @@ void core_dev_free_initiator_node_lun_acl(
kfree(lacl);
}
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\n", 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\n", 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\n", buf);
device_type = dev->transport->get_device_type(dev);
pr_debug(" Type: %s ", scsi_device_type(device_type));
pr_debug(" ANSI SCSI revision: %02x\n",
dev->transport->get_device_rev(dev));
}
struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
{
struct se_device *dev;
dev = hba->transport->alloc_device(hba, name);
if (!dev)
return NULL;
dev->se_hba = hba;
dev->transport = hba->transport;
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);
spin_lock_init(&dev->stats_lock);
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);
atomic_set(&dev->dev_ordered_id, 0);
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);
dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN;
dev->t10_wwn.t10_dev = dev;
dev->t10_alua.t10_dev = dev;
dev->dev_attrib.da_dev = dev;
dev->dev_attrib.emulate_dpo = DA_EMULATE_DPO;
dev->dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE;
dev->dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ;
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;
dev->dev_attrib.emulate_reservations = DA_EMULATE_RESERVATIONS;
dev->dev_attrib.emulate_alua = DA_EMULATE_ALUA;
dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS;
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;
dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS;
dev->dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS;
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
dev->dev_task_attr_type = SAM_TASK_ATTR_PASSTHROUGH;
else
dev->dev_task_attr_type = SAM_TASK_ATTR_EMULATED;
return dev;
}
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\n");
return -EEXIST;
}
ret = dev->transport->configure_device(dev);
if (ret)
goto out;
dev->dev_flags |= DF_CONFIGURED;
/*
* 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);
dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX);
dev->creation_time = get_jiffies_64();
core_setup_reservations(dev);
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\n",
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.
*/
if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV) {
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);
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);
spin_lock(&hba->device_lock);
hba->dev_count--;
spin_unlock(&hba->device_lock);
}
core_alua_free_lu_gp_mem(dev);
core_scsi3_free_all_registrations(dev);
se_release_vpd_for_dev(dev);
dev->transport->free_device(dev);
}
int core_dev_setup_virtual_lun0(void)
{
struct se_hba *hba;
struct se_device *dev;
struct se_subsystem_dev *se_dev = NULL;
struct se_subsystem_api *t;
char buf[16];
int ret;
@ -1581,60 +1597,28 @@ int core_dev_setup_virtual_lun0(void)
if (IS_ERR(hba))
return PTR_ERR(hba);
lun0_hba = hba;
t = hba->transport;
se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL);
if (!se_dev) {
pr_err("Unable to allocate memory for"
" struct se_subsystem_dev\n");
dev = target_alloc_device(hba, "virt_lun0");
if (!dev) {
ret = -ENOMEM;
goto out;
goto out_free_hba;
}
INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list);
spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock);
INIT_LIST_HEAD(&se_dev->t10_pr.registration_list);
INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list);
spin_lock_init(&se_dev->t10_pr.registration_lock);
spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock);
INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list);
spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock);
spin_lock_init(&se_dev->se_dev_lock);
se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN;
se_dev->t10_wwn.t10_sub_dev = se_dev;
se_dev->t10_alua.t10_sub_dev = se_dev;
se_dev->se_dev_attrib.da_sub_dev = se_dev;
se_dev->se_dev_hba = hba;
se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, "virt_lun0");
if (!se_dev->se_dev_su_ptr) {
pr_err("Unable to locate subsystem dependent pointer"
" from allocate_virtdevice()\n");
ret = -ENOMEM;
goto out;
}
lun0_su_dev = se_dev;
memset(buf, 0, 16);
sprintf(buf, "rd_pages=8");
t->set_configfs_dev_params(hba, se_dev, buf, sizeof(buf));
hba->transport->set_configfs_dev_params(dev, buf, sizeof(buf));
dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr);
if (IS_ERR(dev)) {
ret = PTR_ERR(dev);
goto out;
}
se_dev->se_dev_ptr = dev;
ret = target_configure_device(dev);
if (ret)
goto out_free_se_dev;
lun0_hba = hba;
g_lun0_dev = dev;
return 0;
out:
lun0_su_dev = NULL;
kfree(se_dev);
if (lun0_hba) {
core_delete_hba(lun0_hba);
lun0_hba = NULL;
}
out_free_se_dev:
target_free_device(dev);
out_free_hba:
core_delete_hba(hba);
return ret;
}
@ -1642,14 +1626,11 @@ int core_dev_setup_virtual_lun0(void)
void core_dev_release_virtual_lun0(void)
{
struct se_hba *hba = lun0_hba;
struct se_subsystem_dev *su_dev = lun0_su_dev;
if (!hba)
return;
if (g_lun0_dev)
se_free_virtual_device(g_lun0_dev, hba);
kfree(su_dev);
target_free_device(g_lun0_dev);
core_delete_hba(hba);
}

14
drivers/target/target_core_fabric_configfs.c
View file

@ -734,14 +734,12 @@ static int target_fabric_port_link(
struct config_item *se_dev_ci)
{
struct config_item *tpg_ci;
struct se_device *dev;
struct se_lun *lun = container_of(to_config_group(lun_ci),
struct se_lun, lun_group);
struct se_lun *lun_p;
struct se_portal_group *se_tpg;
struct se_subsystem_dev *se_dev = container_of(
to_config_group(se_dev_ci), struct se_subsystem_dev,
se_dev_group);
struct se_device *dev =
container_of(to_config_group(se_dev_ci), struct se_device, dev_group);
struct target_fabric_configfs *tf;
int ret;
@ -755,14 +753,6 @@ static int target_fabric_port_link(
return -EEXIST;
}
dev = se_dev->se_dev_ptr;
if (!dev) {
pr_err("Unable to locate struct se_device pointer from"
" %s\n", config_item_name(se_dev_ci));
ret = -ENODEV;
goto out;
}
lun_p = core_dev_add_lun(se_tpg, dev, lun->unpacked_lun);
if (IS_ERR(lun_p)) {
pr_err("core_dev_add_lun() failed\n");

138
drivers/target/target_core_file.c
View file

@ -41,7 +41,10 @@
#include "target_core_file.h"
static struct se_subsystem_api fileio_template;
static inline struct fd_dev *FD_DEV(struct se_device *dev)
{
return container_of(dev, struct fd_dev, dev);
}
/* fd_attach_hba(): (Part of se_subsystem_api_t template)
*
@ -82,7 +85,7 @@ static void fd_detach_hba(struct se_hba *hba)
hba->hba_ptr = NULL;
}
static void *fd_allocate_virtdevice(struct se_hba *hba, const char *name)
static struct se_device *fd_alloc_device(struct se_hba *hba, const char *name)
{
struct fd_dev *fd_dev;
struct fd_host *fd_host = hba->hba_ptr;
@ -97,34 +100,28 @@ static void *fd_allocate_virtdevice(struct se_hba *hba, const char *name)
pr_debug("FILEIO: Allocated fd_dev for %p\n", name);
return fd_dev;
return &fd_dev->dev;
}
/* fd_create_virtdevice(): (Part of se_subsystem_api_t template)
*
*
*/
static struct se_device *fd_create_virtdevice(
struct se_hba *hba,
struct se_subsystem_dev *se_dev,
void *p)
static int fd_configure_device(struct se_device *dev)
{
struct se_device *dev;
struct se_dev_limits dev_limits;
struct queue_limits *limits;
struct fd_dev *fd_dev = p;
struct fd_host *fd_host = hba->hba_ptr;
struct fd_dev *fd_dev = FD_DEV(dev);
struct fd_host *fd_host = dev->se_hba->hba_ptr;
struct file *file;
struct inode *inode = NULL;
int dev_flags = 0, flags, ret = -EINVAL;
int flags, ret = -EINVAL;
memset(&dev_limits, 0, sizeof(struct se_dev_limits));
if (!(fd_dev->fbd_flags & FBDF_HAS_PATH)) {
pr_err("Missing fd_dev_name=\n");
return -EINVAL;
}
/*
* Use O_DSYNC by default instead of O_SYNC to forgo syncing
* of pure timestamp updates.
*/
flags = O_RDWR | O_CREAT | O_LARGEFILE | O_DSYNC;
/*
* Optionally allow fd_buffered_io=1 to be enabled for people
* who want use the fs buffer cache as an WriteCache mechanism.
@ -154,22 +151,17 @@ static struct se_device *fd_create_virtdevice(
*/
inode = file->f_mapping->host;
if (S_ISBLK(inode->i_mode)) {
struct request_queue *q;
struct request_queue *q = bdev_get_queue(inode->i_bdev);
unsigned long long dev_size;
/*
* Setup the local scope queue_limits from struct request_queue->limits
* to pass into transport_add_device_to_core_hba() as struct se_dev_limits.
*/
q = bdev_get_queue(inode->i_bdev);
limits = &dev_limits.limits;
limits->logical_block_size = bdev_logical_block_size(inode->i_bdev);
limits->max_hw_sectors = queue_max_hw_sectors(q);
limits->max_sectors = queue_max_sectors(q);
dev->dev_attrib.hw_block_size =
bdev_logical_block_size(inode->i_bdev);
dev->dev_attrib.hw_max_sectors = queue_max_hw_sectors(q);
/*
* Determine the number of bytes from i_size_read() minus
* one (1) logical sector from underlying struct block_device
*/
fd_dev->fd_block_size = bdev_logical_block_size(inode->i_bdev);
dev_size = (i_size_read(file->f_mapping->host) -
fd_dev->fd_block_size);
@ -185,26 +177,18 @@ static struct se_device *fd_create_virtdevice(
goto fail;
}
limits = &dev_limits.limits;
limits->logical_block_size = FD_BLOCKSIZE;
limits->max_hw_sectors = FD_MAX_SECTORS;
limits->max_sectors = FD_MAX_SECTORS;
fd_dev->fd_block_size = FD_BLOCKSIZE;
dev->dev_attrib.hw_block_size = FD_BLOCKSIZE;
dev->dev_attrib.hw_max_sectors = FD_MAX_SECTORS;
}
dev_limits.hw_queue_depth = FD_MAX_DEVICE_QUEUE_DEPTH;
dev_limits.queue_depth = FD_DEVICE_QUEUE_DEPTH;
fd_dev->fd_block_size = dev->dev_attrib.hw_block_size;
dev = transport_add_device_to_core_hba(hba, &fileio_template,
se_dev, dev_flags, fd_dev,
&dev_limits, "FILEIO", FD_VERSION);
if (!dev)
goto fail;
dev->dev_attrib.hw_queue_depth = FD_MAX_DEVICE_QUEUE_DEPTH;
if (fd_dev->fbd_flags & FDBD_HAS_BUFFERED_IO_WCE) {
pr_debug("FILEIO: Forcing setting of emulate_write_cache=1"
" with FDBD_HAS_BUFFERED_IO_WCE\n");
dev->se_sub_dev->se_dev_attrib.emulate_write_cache = 1;
dev->dev_attrib.emulate_write_cache = 1;
}
fd_dev->fd_dev_id = fd_host->fd_host_dev_id_count++;
@ -214,22 +198,18 @@ static struct se_device *fd_create_virtdevice(
" %llu total bytes\n", fd_host->fd_host_id, fd_dev->fd_dev_id,
fd_dev->fd_dev_name, fd_dev->fd_dev_size);
return dev;
return 0;
fail:
if (fd_dev->fd_file) {
filp_close(fd_dev->fd_file, NULL);
fd_dev->fd_file = NULL;
}
return ERR_PTR(ret);
return ret;
}
/* fd_free_device(): (Part of se_subsystem_api_t template)
*
*
*/
static void fd_free_device(void *p)
static void fd_free_device(struct se_device *dev)
{
struct fd_dev *fd_dev = p;
struct fd_dev *fd_dev = FD_DEV(dev);
if (fd_dev->fd_file) {
filp_close(fd_dev->fd_file, NULL);
@ -243,13 +223,12 @@ static int fd_do_readv(struct se_cmd *cmd, struct scatterlist *sgl,
u32 sgl_nents)
{
struct se_device *se_dev = cmd->se_dev;
struct fd_dev *dev = se_dev->dev_ptr;
struct fd_dev *dev = FD_DEV(se_dev);
struct file *fd = dev->fd_file;
struct scatterlist *sg;
struct iovec *iov;
mm_segment_t old_fs;
loff_t pos = (cmd->t_task_lba *
se_dev->se_sub_dev->se_dev_attrib.block_size);
loff_t pos = (cmd->t_task_lba * se_dev->dev_attrib.block_size);
int ret = 0, i;
iov = kzalloc(sizeof(struct iovec) * sgl_nents, GFP_KERNEL);
@ -296,13 +275,12 @@ static int fd_do_writev(struct se_cmd *cmd, struct scatterlist *sgl,
u32 sgl_nents)
{
struct se_device *se_dev = cmd->se_dev;
struct fd_dev *dev = se_dev->dev_ptr;
struct fd_dev *dev = FD_DEV(se_dev);
struct file *fd = dev->fd_file;
struct scatterlist *sg;
struct iovec *iov;
mm_segment_t old_fs;
loff_t pos = (cmd->t_task_lba *
se_dev->se_sub_dev->se_dev_attrib.block_size);
loff_t pos = (cmd->t_task_lba * se_dev->dev_attrib.block_size);
int ret, i = 0;
iov = kzalloc(sizeof(struct iovec) * sgl_nents, GFP_KERNEL);
@ -334,7 +312,7 @@ static int fd_do_writev(struct se_cmd *cmd, struct scatterlist *sgl,
static int fd_execute_sync_cache(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct fd_dev *fd_dev = dev->dev_ptr;
struct fd_dev *fd_dev = FD_DEV(dev);
int immed = (cmd->t_task_cdb[1] & 0x2);
loff_t start, end;
int ret;
@ -353,7 +331,7 @@ static int fd_execute_sync_cache(struct se_cmd *cmd)
start = 0;
end = LLONG_MAX;
} else {
start = cmd->t_task_lba * dev->se_sub_dev->se_dev_attrib.block_size;
start = cmd->t_task_lba * dev->dev_attrib.block_size;
if (cmd->data_length)
end = start + cmd->data_length;
else
@ -399,11 +377,11 @@ static int fd_execute_rw(struct se_cmd *cmd)
* Allow this to happen independent of WCE=0 setting.
*/
if (ret > 0 &&
dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0 &&
dev->dev_attrib.emulate_fua_write > 0 &&
(cmd->se_cmd_flags & SCF_FUA)) {
struct fd_dev *fd_dev = dev->dev_ptr;
struct fd_dev *fd_dev = FD_DEV(dev);
loff_t start = cmd->t_task_lba *
dev->se_sub_dev->se_dev_attrib.block_size;
dev->dev_attrib.block_size;
loff_t end = start + cmd->data_length;
vfs_fsync_range(fd_dev->fd_file, start, end, 1);
@ -430,12 +408,10 @@ static match_table_t tokens = {
{Opt_err, NULL}
};
static ssize_t fd_set_configfs_dev_params(
struct se_hba *hba,
struct se_subsystem_dev *se_dev,
const char *page, ssize_t count)
static ssize_t fd_set_configfs_dev_params(struct se_device *dev,
const char *page, ssize_t count)
{
struct fd_dev *fd_dev = se_dev->se_dev_su_ptr;
struct fd_dev *fd_dev = FD_DEV(dev);
char *orig, *ptr, *arg_p, *opts;
substring_t args[MAX_OPT_ARGS];
int ret = 0, arg, token;
@ -502,24 +478,9 @@ static ssize_t fd_set_configfs_dev_params(
return (!ret) ? count : ret;
}
static ssize_t fd_check_configfs_dev_params(struct se_hba *hba, struct se_subsystem_dev *se_dev)
static ssize_t fd_show_configfs_dev_params(struct se_device *dev, char *b)
{
struct fd_dev *fd_dev = se_dev->se_dev_su_ptr;
if (!(fd_dev->fbd_flags & FBDF_HAS_PATH)) {
pr_err("Missing fd_dev_name=\n");
return -EINVAL;
}
return 0;
}
static ssize_t fd_show_configfs_dev_params(
struct se_hba *hba,
struct se_subsystem_dev *se_dev,
char *b)
{
struct fd_dev *fd_dev = se_dev->se_dev_su_ptr;
struct fd_dev *fd_dev = FD_DEV(dev);
ssize_t bl = 0;
bl = sprintf(b + bl, "TCM FILEIO ID: %u", fd_dev->fd_dev_id);
@ -550,7 +511,7 @@ static u32 fd_get_device_type(struct se_device *dev)
static sector_t fd_get_blocks(struct se_device *dev)
{
struct fd_dev *fd_dev = dev->dev_ptr;
struct fd_dev *fd_dev = FD_DEV(dev);
struct file *f = fd_dev->fd_file;
struct inode *i = f->f_mapping->host;
unsigned long long dev_size;
@ -564,7 +525,7 @@ static sector_t fd_get_blocks(struct se_device *dev)
else
dev_size = fd_dev->fd_dev_size;
return div_u64(dev_size, dev->se_sub_dev->se_dev_attrib.block_size);
return div_u64(dev_size, dev->dev_attrib.block_size);
}
static struct spc_ops fd_spc_ops = {
@ -579,15 +540,16 @@ static int fd_parse_cdb(struct se_cmd *cmd)
static struct se_subsystem_api fileio_template = {
.name = "fileio",
.inquiry_prod = "FILEIO",
.inquiry_rev = FD_VERSION,
.owner = THIS_MODULE,
.transport_type = TRANSPORT_PLUGIN_VHBA_PDEV,
.attach_hba = fd_attach_hba,
.detach_hba = fd_detach_hba,
.allocate_virtdevice = fd_allocate_virtdevice,
.create_virtdevice = fd_create_virtdevice,
.alloc_device = fd_alloc_device,
.configure_device = fd_configure_device,
.free_device = fd_free_device,
.parse_cdb = fd_parse_cdb,
.check_configfs_dev_params = fd_check_configfs_dev_params,
.set_configfs_dev_params = fd_set_configfs_dev_params,
.show_configfs_dev_params = fd_show_configfs_dev_params,
.get_device_rev = fd_get_device_rev,

2
drivers/target/target_core_file.h
View file

@ -17,6 +17,8 @@
#define FDBD_HAS_BUFFERED_IO_WCE 0x04
struct fd_dev {
struct se_device dev;
u32 fbd_flags;
unsigned char fd_dev_name[FD_MAX_DEV_NAME];
/* Unique Ramdisk Device ID in Ramdisk HBA */

4
drivers/target/target_core_hba.c
View file

@ -113,7 +113,6 @@ core_alloc_hba(const char *plugin_name, u32 plugin_dep_id, u32 hba_flags)
return ERR_PTR(-ENOMEM);
}
INIT_LIST_HEAD(&hba->hba_dev_list);
spin_lock_init(&hba->device_lock);
mutex_init(&hba->hba_access_mutex);
@ -152,8 +151,7 @@ core_alloc_hba(const char *plugin_name, u32 plugin_dep_id, u32 hba_flags)
int
core_delete_hba(struct se_hba *hba)
{
if (!list_empty(&hba->hba_dev_list))
dump_stack();
WARN_ON(hba->dev_count);
hba->transport->detach_hba(hba);

185
drivers/target/target_core_iblock.c
View file

@ -50,6 +50,12 @@
#define IBLOCK_MAX_BIO_PER_TASK 32 /* max # of bios to submit at a time */
#define IBLOCK_BIO_POOL_SIZE 128
static inline struct iblock_dev *IBLOCK_DEV(struct se_device *dev)
{
return container_of(dev, struct iblock_dev, dev);
}
static struct se_subsystem_api iblock_template;
static void iblock_bio_done(struct bio *, int);
@ -70,7 +76,7 @@ static void iblock_detach_hba(struct se_hba *hba)
{
}
static void *iblock_allocate_virtdevice(struct se_hba *hba, const char *name)
static struct se_device *iblock_alloc_device(struct se_hba *hba, const char *name)
{
struct iblock_dev *ib_dev = NULL;
@ -82,40 +88,28 @@ static void *iblock_allocate_virtdevice(struct se_hba *hba, const char *name)
pr_debug( "IBLOCK: Allocated ib_dev for %s\n", name);
return ib_dev;
return &ib_dev->dev;
}
static struct se_device *iblock_create_virtdevice(
struct se_hba *hba,
struct se_subsystem_dev *se_dev,
void *p)
static int iblock_configure_device(struct se_device *dev)
{
struct iblock_dev *ib_dev = p;
struct se_device *dev;
struct se_dev_limits dev_limits;
struct block_device *bd = NULL;
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
struct request_queue *q;
struct queue_limits *limits;
u32 dev_flags = 0;
struct block_device *bd = NULL;
fmode_t mode;
int ret = -EINVAL;
int ret = -ENOMEM;
if (!ib_dev) {
pr_err("Unable to locate struct iblock_dev parameter\n");
return ERR_PTR(ret);
if (!(ib_dev->ibd_flags & IBDF_HAS_UDEV_PATH)) {
pr_err("Missing udev_path= parameters for IBLOCK\n");
return -EINVAL;
}
memset(&dev_limits, 0, sizeof(struct se_dev_limits));
ib_dev->ibd_bio_set = bioset_create(IBLOCK_BIO_POOL_SIZE, 0);
if (!ib_dev->ibd_bio_set) {
pr_err("IBLOCK: Unable to create bioset()\n");
return ERR_PTR(-ENOMEM);
pr_err("IBLOCK: Unable to create bioset\n");
goto out;
}
pr_debug("IBLOCK: Created bio_set()\n");
/*
* iblock_check_configfs_dev_params() ensures that ib_dev->ibd_udev_path
* must already have been set in order for echo 1 > $HBA/$DEV/enable to run.
*/
pr_debug( "IBLOCK: Claiming struct block_device: %s\n",
ib_dev->ibd_udev_path);
@ -126,27 +120,15 @@ static struct se_device *iblock_create_virtdevice(
bd = blkdev_get_by_path(ib_dev->ibd_udev_path, mode, ib_dev);
if (IS_ERR(bd)) {
ret = PTR_ERR(bd);
goto failed;
goto out_free_bioset;
}
/*
* Setup the local scope queue_limits from struct request_queue->limits
* to pass into transport_add_device_to_core_hba() as struct se_dev_limits.
*/
q = bdev_get_queue(bd);
limits = &dev_limits.limits;
limits->logical_block_size = bdev_logical_block_size(bd);
limits->max_hw_sectors = UINT_MAX;
limits->max_sectors = UINT_MAX;
dev_limits.hw_queue_depth = q->nr_requests;
dev_limits.queue_depth = q->nr_requests;
ib_dev->ibd_bd = bd;
dev = transport_add_device_to_core_hba(hba,
&iblock_template, se_dev, dev_flags, ib_dev,
&dev_limits, "IBLOCK", IBLOCK_VERSION);
if (!dev)
goto failed;
q = bdev_get_queue(bd);
dev->dev_attrib.hw_block_size = bdev_logical_block_size(bd);
dev->dev_attrib.hw_max_sectors = UINT_MAX;
dev->dev_attrib.hw_queue_depth = q->nr_requests;
/*
* Check if the underlying struct block_device request_queue supports
@ -154,15 +136,16 @@ static struct se_device *iblock_create_virtdevice(
* in ATA and we need to set TPE=1
*/
if (blk_queue_discard(q)) {
dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count =
dev->dev_attrib.max_unmap_lba_count =
q->limits.max_discard_sectors;
/*
* Currently hardcoded to 1 in Linux/SCSI code..
*/
dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = 1;
dev->se_sub_dev->se_dev_attrib.unmap_granularity =
dev->dev_attrib.max_unmap_block_desc_count = 1;
dev->dev_attrib.unmap_granularity =
q->limits.discard_granularity >> 9;
dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment =
dev->dev_attrib.unmap_granularity_alignment =
q->limits.discard_alignment;
pr_debug("IBLOCK: BLOCK Discard support available,"
@ -170,22 +153,19 @@ static struct se_device *iblock_create_virtdevice(
}
if (blk_queue_nonrot(q))
dev->se_sub_dev->se_dev_attrib.is_nonrot = 1;
dev->dev_attrib.is_nonrot = 1;
return 0;
return dev;
failed:
if (ib_dev->ibd_bio_set) {
bioset_free(ib_dev->ibd_bio_set);
ib_dev->ibd_bio_set = NULL;
}
ib_dev->ibd_bd = NULL;
return ERR_PTR(ret);
out_free_bioset:
bioset_free(ib_dev->ibd_bio_set);
ib_dev->ibd_bio_set = NULL;
out:
return ret;
}
static void iblock_free_device(void *p)
static void iblock_free_device(struct se_device *dev)
{
struct iblock_dev *ib_dev = p;
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
if (ib_dev->ibd_bd != NULL)
blkdev_put(ib_dev->ibd_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL);
@ -203,12 +183,12 @@ static unsigned long long iblock_emulate_read_cap_with_block_size(
bdev_logical_block_size(bd)) - 1);
u32 block_size = bdev_logical_block_size(bd);
if (block_size == dev->se_sub_dev->se_dev_attrib.block_size)
if (block_size == dev->dev_attrib.block_size)
return blocks_long;
switch (block_size) {
case 4096:
switch (dev->se_sub_dev->se_dev_attrib.block_size) {
switch (dev->dev_attrib.block_size) {
case 2048:
blocks_long <<= 1;
break;
@ -222,7 +202,7 @@ static unsigned long long iblock_emulate_read_cap_with_block_size(
}
break;
case 2048:
switch (dev->se_sub_dev->se_dev_attrib.block_size) {
switch (dev->dev_attrib.block_size) {
case 4096:
blocks_long >>= 1;
break;
@ -237,7 +217,7 @@ static unsigned long long iblock_emulate_read_cap_with_block_size(
}
break;
case 1024:
switch (dev->se_sub_dev->se_dev_attrib.block_size) {
switch (dev->dev_attrib.block_size) {
case 4096:
blocks_long >>= 2;
break;
@ -252,7 +232,7 @@ static unsigned long long iblock_emulate_read_cap_with_block_size(
}
break;
case 512:
switch (dev->se_sub_dev->se_dev_attrib.block_size) {
switch (dev->dev_attrib.block_size) {
case 4096:
blocks_long >>= 3;
break;
@ -299,7 +279,7 @@ static void iblock_end_io_flush(struct bio *bio, int err)
*/
static int iblock_execute_sync_cache(struct se_cmd *cmd)
{
struct iblock_dev *ib_dev = cmd->se_dev->dev_ptr;
struct iblock_dev *ib_dev = IBLOCK_DEV(cmd->se_dev);
int immed = (cmd->t_task_cdb[1] & 0x2);
struct bio *bio;
@ -322,7 +302,7 @@ static int iblock_execute_sync_cache(struct se_cmd *cmd)
static int iblock_execute_unmap(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct iblock_dev *ibd = dev->dev_ptr;
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
unsigned char *buf, *ptr = NULL;
sector_t lba;
int size;
@ -349,7 +329,7 @@ static int iblock_execute_unmap(struct se_cmd *cmd)
else
size = bd_dl;
if (size / 16 > dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) {
if (size / 16 > dev->dev_attrib.max_unmap_block_desc_count) {
cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
ret = -EINVAL;
goto err;
@ -366,7 +346,7 @@ static int iblock_execute_unmap(struct se_cmd *cmd)
pr_debug("UNMAP: Using lba: %llu and range: %u\n",
(unsigned long long)lba, range);
if (range > dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count) {
if (range > dev->dev_attrib.max_unmap_lba_count) {
cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
ret = -EINVAL;
goto err;
@ -378,7 +358,7 @@ static int iblock_execute_unmap(struct se_cmd *cmd)
goto err;
}
ret = blkdev_issue_discard(ibd->ibd_bd, lba, range,
ret = blkdev_issue_discard(ib_dev->ibd_bd, lba, range,
GFP_KERNEL, 0);
if (ret < 0) {
pr_err("blkdev_issue_discard() failed: %d\n",
@ -399,10 +379,10 @@ static int iblock_execute_unmap(struct se_cmd *cmd)
static int iblock_execute_write_same(struct se_cmd *cmd)
{
struct iblock_dev *ibd = cmd->se_dev->dev_ptr;
struct iblock_dev *ib_dev = IBLOCK_DEV(cmd->se_dev);
int ret;
ret = blkdev_issue_discard(ibd->ibd_bd, cmd->t_task_lba,
ret = blkdev_issue_discard(ib_dev->ibd_bd, cmd->t_task_lba,
spc_get_write_same_sectors(cmd), GFP_KERNEL,
0);
if (ret < 0) {
@ -425,11 +405,10 @@ static match_table_t tokens = {
{Opt_err, NULL}
};
static ssize_t iblock_set_configfs_dev_params(struct se_hba *hba,
struct se_subsystem_dev *se_dev,
const char *page, ssize_t count)
static ssize_t iblock_set_configfs_dev_params(struct se_device *dev,
const char *page, ssize_t count)
{
struct iblock_dev *ib_dev = se_dev->se_dev_su_ptr;
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
char *orig, *ptr, *arg_p, *opts;
substring_t args[MAX_OPT_ARGS];
int ret = 0, token;
@ -491,43 +470,26 @@ static ssize_t iblock_set_configfs_dev_params(struct se_hba *hba,
return (!ret) ? count : ret;
}
static ssize_t iblock_check_configfs_dev_params(
struct se_hba *hba,
struct se_subsystem_dev *se_dev)
static ssize_t iblock_show_configfs_dev_params(struct se_device *dev, char *b)
{
struct iblock_dev *ibd = se_dev->se_dev_su_ptr;
if (!(ibd->ibd_flags & IBDF_HAS_UDEV_PATH)) {
pr_err("Missing udev_path= parameters for IBLOCK\n");
return -EINVAL;
}
return 0;
}
static ssize_t iblock_show_configfs_dev_params(
struct se_hba *hba,
struct se_subsystem_dev *se_dev,
char *b)
{
struct iblock_dev *ibd = se_dev->se_dev_su_ptr;
struct block_device *bd = ibd->ibd_bd;
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
struct block_device *bd = ib_dev->ibd_bd;
char buf[BDEVNAME_SIZE];
ssize_t bl = 0;
if (bd)
bl += sprintf(b + bl, "iBlock device: %s",
bdevname(bd, buf));
if (ibd->ibd_flags & IBDF_HAS_UDEV_PATH)
if (ib_dev->ibd_flags & IBDF_HAS_UDEV_PATH)
bl += sprintf(b + bl, " UDEV PATH: %s",
ibd->ibd_udev_path);
bl += sprintf(b + bl, " readonly: %d\n", ibd->ibd_readonly);
ib_dev->ibd_udev_path);
bl += sprintf(b + bl, " readonly: %d\n", ib_dev->ibd_readonly);
bl += sprintf(b + bl, " ");
if (bd) {
bl += sprintf(b + bl, "Major: %d Minor: %d %s\n",
MAJOR(bd->bd_dev), MINOR(bd->bd_dev), (!bd->bd_contains) ?
"" : (bd->bd_holder == ibd) ?
"" : (bd->bd_holder == ib_dev) ?
"CLAIMED: IBLOCK" : "CLAIMED: OS");
} else {
bl += sprintf(b + bl, "Major: 0 Minor: 0\n");
@ -556,7 +518,7 @@ static void iblock_complete_cmd(struct se_cmd *cmd)
static struct bio *
iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32 sg_num)
{
struct iblock_dev *ib_dev = cmd->se_dev->dev_ptr;
struct iblock_dev *ib_dev = IBLOCK_DEV(cmd->se_dev);
struct bio *bio;
/*
@ -611,8 +573,8 @@ static int iblock_execute_rw(struct se_cmd *cmd)
* Force data to disk if we pretend to not have a volatile
* write cache, or the initiator set the Force Unit Access bit.
*/
if (dev->se_sub_dev->se_dev_attrib.emulate_write_cache == 0 ||
(dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0 &&
if (dev->dev_attrib.emulate_write_cache == 0 ||
(dev->dev_attrib.emulate_fua_write > 0 &&
(cmd->se_cmd_flags & SCF_FUA)))
rw = WRITE_FUA;
else
@ -625,17 +587,17 @@ static int iblock_execute_rw(struct se_cmd *cmd)
* Convert the blocksize advertised to the initiator to the 512 byte
* units unconditionally used by the Linux block layer.
*/
if (dev->se_sub_dev->se_dev_attrib.block_size == 4096)
if (dev->dev_attrib.block_size == 4096)
block_lba = (cmd->t_task_lba << 3);
else if (dev->se_sub_dev->se_dev_attrib.block_size == 2048)
else if (dev->dev_attrib.block_size == 2048)
block_lba = (cmd->t_task_lba << 2);
else if (dev->se_sub_dev->se_dev_attrib.block_size == 1024)
else if (dev->dev_attrib.block_size == 1024)
block_lba = (cmd->t_task_lba << 1);
else if (dev->se_sub_dev->se_dev_attrib.block_size == 512)
else if (dev->dev_attrib.block_size == 512)
block_lba = cmd->t_task_lba;
else {
pr_err("Unsupported SCSI -> BLOCK LBA conversion:"
" %u\n", dev->se_sub_dev->se_dev_attrib.block_size);
" %u\n", dev->dev_attrib.block_size);
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return -ENOSYS;
}
@ -714,8 +676,8 @@ static u32 iblock_get_device_type(struct se_device *dev)
static sector_t iblock_get_blocks(struct se_device *dev)
{
struct iblock_dev *ibd = dev->dev_ptr;
struct block_device *bd = ibd->ibd_bd;
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
struct block_device *bd = ib_dev->ibd_bd;
struct request_queue *q = bdev_get_queue(bd);
return iblock_emulate_read_cap_with_block_size(dev, bd, q);
@ -761,15 +723,16 @@ static int iblock_parse_cdb(struct se_cmd *cmd)
static struct se_subsystem_api iblock_template = {
.name = "iblock",
.inquiry_prod = "IBLOCK",
.inquiry_rev = IBLOCK_VERSION,
.owner = THIS_MODULE,
.transport_type = TRANSPORT_PLUGIN_VHBA_PDEV,
.attach_hba = iblock_attach_hba,
.detach_hba = iblock_detach_hba,
.allocate_virtdevice = iblock_allocate_virtdevice,
.create_virtdevice = iblock_create_virtdevice,
.alloc_device = iblock_alloc_device,
.configure_device = iblock_configure_device,
.free_device = iblock_free_device,
.parse_cdb = iblock_parse_cdb,
.check_configfs_dev_params = iblock_check_configfs_dev_params,
.set_configfs_dev_params = iblock_set_configfs_dev_params,
.show_configfs_dev_params = iblock_show_configfs_dev_params,
.get_device_rev = iblock_get_device_rev,

1
drivers/target/target_core_iblock.h
View file

@ -14,6 +14,7 @@ struct iblock_req {
#define IBDF_HAS_UDEV_PATH 0x01
struct iblock_dev {
struct se_device dev;
unsigned char ibd_udev_path[SE_UDEV_PATH_LEN];
u32 ibd_flags;
struct bio_set *ibd_bio_set;

12
drivers/target/target_core_internal.h
View file

@ -20,12 +20,6 @@ int core_dev_export(struct se_device *, struct se_portal_group *,
void core_dev_unexport(struct se_device *, struct se_portal_group *,
struct se_lun *);
int target_report_luns(struct se_cmd *);
void se_release_device_for_hba(struct se_device *);
void se_release_vpd_for_dev(struct se_device *);
int se_free_virtual_device(struct se_device *, struct se_hba *);
int se_dev_check_online(struct se_device *);
int se_dev_check_shutdown(struct se_device *);
void se_dev_set_default_attribs(struct se_device *, struct se_dev_limits *);
int se_dev_set_task_timeout(struct se_device *, u32);
int se_dev_set_max_unmap_lba_count(struct se_device *, u32);
int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32);
@ -60,6 +54,9 @@ void core_dev_free_initiator_node_lun_acl(struct se_portal_group *,
struct se_lun_acl *lacl);
int core_dev_setup_virtual_lun0(void);
void core_dev_release_virtual_lun0(void);
struct se_device *target_alloc_device(struct se_hba *hba, const char *name);
int target_configure_device(struct se_device *dev);
void target_free_device(struct se_device *);
/* target_core_hba.c */
struct se_hba *core_alloc_hba(const char *, u32, u32);
@ -106,9 +103,10 @@ bool target_stop_cmd(struct se_cmd *cmd, unsigned long *flags);
int transport_clear_lun_from_sessions(struct se_lun *);
void transport_send_task_abort(struct se_cmd *);
int target_cmd_size_check(struct se_cmd *cmd, unsigned int size);
void target_qf_do_work(struct work_struct *work);
/* target_core_stat.c */
void target_stat_setup_dev_default_groups(struct se_subsystem_dev *);
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 *);

148
drivers/target/target_core_pr.c
View file

@ -103,7 +103,7 @@ static int core_scsi2_reservation_check(struct se_cmd *cmd, u32 *pr_reg_type)
spin_unlock(&dev->dev_reservation_lock);
return -EINVAL;
}
if (!(dev->dev_flags & DF_SPC2_RESERVATIONS_WITH_ISID)) {
if (!(dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID)) {
spin_unlock(&dev->dev_reservation_lock);
return 0;
}
@ -120,10 +120,10 @@ static void core_scsi3_put_pr_reg(struct t10_pr_registration *);
static int target_check_scsi2_reservation_conflict(struct se_cmd *cmd)
{
struct se_session *se_sess = cmd->se_sess;
struct se_subsystem_dev *su_dev = cmd->se_dev->se_sub_dev;
struct se_device *dev = cmd->se_dev;
struct t10_pr_registration *pr_reg;
struct t10_reservation *pr_tmpl = &su_dev->t10_pr;
int crh = (su_dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS);
struct t10_reservation *pr_tmpl = &dev->t10_pr;
int crh = (dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS);
int conflict = 0;
if (!crh)
@ -223,10 +223,10 @@ int target_scsi2_reservation_release(struct se_cmd *cmd)
goto out_unlock;
dev->dev_reserved_node_acl = NULL;
dev->dev_flags &= ~DF_SPC2_RESERVATIONS;
if (dev->dev_flags & DF_SPC2_RESERVATIONS_WITH_ISID) {
dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS;
if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID) {
dev->dev_res_bin_isid = 0;
dev->dev_flags &= ~DF_SPC2_RESERVATIONS_WITH_ISID;
dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS_WITH_ISID;
}
tpg = sess->se_tpg;
pr_debug("SCSI-2 Released reservation for %s LUN: %u ->"
@ -292,10 +292,10 @@ int target_scsi2_reservation_reserve(struct se_cmd *cmd)
}
dev->dev_reserved_node_acl = sess->se_node_acl;
dev->dev_flags |= DF_SPC2_RESERVATIONS;
dev->dev_reservation_flags |= DRF_SPC2_RESERVATIONS;
if (sess->sess_bin_isid != 0) {
dev->dev_res_bin_isid = sess->sess_bin_isid;
dev->dev_flags |= DF_SPC2_RESERVATIONS_WITH_ISID;
dev->dev_reservation_flags |= DRF_SPC2_RESERVATIONS_WITH_ISID;
}
pr_debug("SCSI-2 Reserved %s LUN: %u -> MAPPED LUN: %u"
" for %s\n", tpg->se_tpg_tfo->get_fabric_name(),
@ -333,7 +333,7 @@ static int core_scsi3_pr_seq_non_holder(
/*
* A legacy SPC-2 reservation is being held.
*/
if (cmd->se_dev->dev_flags & DF_SPC2_RESERVATIONS)
if (cmd->se_dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
return core_scsi2_reservation_seq_non_holder(cmd,
cdb, pr_reg_type);
@ -565,8 +565,8 @@ static int core_scsi3_pr_seq_non_holder(
static u32 core_scsi3_pr_generation(struct se_device *dev)
{
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
u32 prg;
/*
* PRGeneration field shall contain the value of a 32-bit wrapping
* counter mainted by the device server.
@ -577,7 +577,7 @@ static u32 core_scsi3_pr_generation(struct se_device *dev)
* See spc4r17 section 6.3.12 READ_KEYS service action
*/
spin_lock(&dev->dev_reservation_lock);
prg = su_dev->t10_pr.pr_generation++;
prg = dev->t10_pr.pr_generation++;
spin_unlock(&dev->dev_reservation_lock);
return prg;
@ -596,7 +596,7 @@ static int core_scsi3_pr_reservation_check(
/*
* A legacy SPC-2 reservation is being held.
*/
if (dev->dev_flags & DF_SPC2_RESERVATIONS)
if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
return core_scsi2_reservation_check(cmd, pr_reg_type);
spin_lock(&dev->dev_reservation_lock);
@ -636,7 +636,6 @@ static struct t10_pr_registration *__core_scsi3_do_alloc_registration(
int all_tg_pt,
int aptpl)
{
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
struct t10_pr_registration *pr_reg;
pr_reg = kmem_cache_zalloc(t10_pr_reg_cache, GFP_ATOMIC);
@ -645,7 +644,7 @@ static struct t10_pr_registration *__core_scsi3_do_alloc_registration(
return NULL;
}
pr_reg->pr_aptpl_buf = kzalloc(su_dev->t10_pr.pr_aptpl_buf_len,
pr_reg->pr_aptpl_buf = kzalloc(dev->t10_pr.pr_aptpl_buf_len,
GFP_ATOMIC);
if (!pr_reg->pr_aptpl_buf) {
pr_err("Unable to allocate pr_reg->pr_aptpl_buf\n");
@ -929,7 +928,7 @@ static int __core_scsi3_check_aptpl_registration(
struct se_dev_entry *deve)
{
struct t10_pr_registration *pr_reg, *pr_reg_tmp;
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
unsigned char i_port[PR_APTPL_MAX_IPORT_LEN];
unsigned char t_port[PR_APTPL_MAX_TPORT_LEN];
u16 tpgt;
@ -996,11 +995,10 @@ int core_scsi3_check_aptpl_registration(
struct se_lun *lun,
struct se_lun_acl *lun_acl)
{
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
struct se_node_acl *nacl = lun_acl->se_lun_nacl;
struct se_dev_entry *deve = nacl->device_list[lun_acl->mapped_lun];
if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
if (dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
return 0;
return __core_scsi3_check_aptpl_registration(dev, tpg, lun,
@ -1051,10 +1049,9 @@ static void __core_scsi3_add_registration(
int register_type,
int register_move)
{
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo;
struct t10_pr_registration *pr_reg_tmp, *pr_reg_tmp_safe;
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
/*
* Increment PRgeneration counter for struct se_device upon a successful
@ -1066,7 +1063,7 @@ static void __core_scsi3_add_registration(
* for the REGISTER.
*/
pr_reg->pr_res_generation = (register_move) ?
su_dev->t10_pr.pr_generation++ :
dev->t10_pr.pr_generation++ :
core_scsi3_pr_generation(dev);
spin_lock(&pr_tmpl->registration_lock);
@ -1135,7 +1132,7 @@ static struct t10_pr_registration *__core_scsi3_locate_pr_reg(
struct se_node_acl *nacl,
unsigned char *isid)
{
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
struct t10_pr_registration *pr_reg, *pr_reg_tmp;
struct se_portal_group *tpg;
@ -1160,7 +1157,7 @@ static struct t10_pr_registration *__core_scsi3_locate_pr_reg(
* for fabric modules (iSCSI) requiring them.
*/
if (tpg->se_tpg_tfo->sess_get_initiator_sid != NULL) {
if (dev->se_sub_dev->se_dev_attrib.enforce_pr_isids)
if (dev->dev_attrib.enforce_pr_isids)
continue;
}
atomic_inc(&pr_reg->pr_res_holders);
@ -1274,7 +1271,7 @@ static void __core_scsi3_free_registration(
{
struct target_core_fabric_ops *tfo =
pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo;
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
char i_buf[PR_REG_ISID_ID_LEN];
int prf_isid;
@ -1335,7 +1332,7 @@ void core_scsi3_free_pr_reg_from_nacl(
struct se_device *dev,
struct se_node_acl *nacl)
{
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder;
/*
* If the passed se_node_acl matches the reservation holder,
@ -1365,7 +1362,7 @@ void core_scsi3_free_pr_reg_from_nacl(
void core_scsi3_free_all_registrations(
struct se_device *dev)
{
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder;
spin_lock(&dev->dev_reservation_lock);
@ -1899,7 +1896,6 @@ static int __core_scsi3_update_aptpl_buf(
{
struct se_lun *lun;
struct se_portal_group *tpg;
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
struct t10_pr_registration *pr_reg;
unsigned char tmp[512], isid_buf[32];
ssize_t len = 0;
@ -1917,8 +1913,8 @@ static int __core_scsi3_update_aptpl_buf(
/*
* Walk the registration list..
*/
spin_lock(&su_dev->t10_pr.registration_lock);
list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list,
spin_lock(&dev->t10_pr.registration_lock);
list_for_each_entry(pr_reg, &dev->t10_pr.registration_list,
pr_reg_list) {
tmp[0] = '\0';
@ -1963,7 +1959,7 @@ static int __core_scsi3_update_aptpl_buf(
if ((len + strlen(tmp) >= pr_aptpl_buf_len)) {
pr_err("Unable to update renaming"
" APTPL metadata\n");
spin_unlock(&su_dev->t10_pr.registration_lock);
spin_unlock(&dev->t10_pr.registration_lock);
return -EMSGSIZE;
}
len += sprintf(buf+len, "%s", tmp);
@ -1981,13 +1977,13 @@ static int __core_scsi3_update_aptpl_buf(
if ((len + strlen(tmp) >= pr_aptpl_buf_len)) {
pr_err("Unable to update renaming"
" APTPL metadata\n");
spin_unlock(&su_dev->t10_pr.registration_lock);
spin_unlock(&dev->t10_pr.registration_lock);
return -EMSGSIZE;
}
len += sprintf(buf+len, "%s", tmp);
reg_count++;
}
spin_unlock(&su_dev->t10_pr.registration_lock);
spin_unlock(&dev->t10_pr.registration_lock);
if (!reg_count)
len += sprintf(buf+len, "No Registrations or Reservations");
@ -2019,7 +2015,7 @@ static int __core_scsi3_write_aptpl_to_file(
unsigned char *buf,
u32 pr_aptpl_buf_len)
{
struct t10_wwn *wwn = &dev->se_sub_dev->t10_wwn;
struct t10_wwn *wwn = &dev->t10_wwn;
struct file *file;
struct iovec iov[1];
mm_segment_t old_fs;
@ -2120,7 +2116,7 @@ static int core_scsi3_emulate_pro_register(
struct se_lun *se_lun = cmd->se_lun;
struct se_portal_group *se_tpg;
struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_reg_tmp, *pr_reg_e;
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
/* Used for APTPL metadata w/ UNREGISTER */
unsigned char *pr_aptpl_buf = NULL;
unsigned char isid_buf[PR_REG_ISID_LEN], *isid_ptr = NULL;
@ -2434,7 +2430,7 @@ static int core_scsi3_pro_reserve(
struct se_session *se_sess = cmd->se_sess;
struct se_lun *se_lun = cmd->se_lun;
struct t10_pr_registration *pr_reg, *pr_res_holder;
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
char i_buf[PR_REG_ISID_ID_LEN];
int ret, prf_isid;
@ -2667,7 +2663,7 @@ static int core_scsi3_emulate_pro_release(
struct se_session *se_sess = cmd->se_sess;
struct se_lun *se_lun = cmd->se_lun;
struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_res_holder;
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
int ret, all_reg = 0;
if (!se_sess || !se_lun) {
@ -2836,7 +2832,7 @@ static int core_scsi3_emulate_pro_clear(
struct se_device *dev = cmd->se_dev;
struct se_node_acl *pr_reg_nacl;
struct se_session *se_sess = cmd->se_sess;
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_reg_n, *pr_res_holder;
u32 pr_res_mapped_lun = 0;
int calling_it_nexus = 0;
@ -3006,7 +3002,7 @@ static int core_scsi3_pro_preempt(
struct se_session *se_sess = cmd->se_sess;
LIST_HEAD(preempt_and_abort_list);
struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_reg_n, *pr_res_holder;
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
u32 pr_res_mapped_lun = 0;
int all_reg = 0, calling_it_nexus = 0, released_regs = 0;
int prh_type = 0, prh_scope = 0, ret;
@ -3358,7 +3354,7 @@ static int core_scsi3_emulate_pro_register_and_move(
struct se_portal_group *se_tpg, *dest_se_tpg = NULL;
struct target_core_fabric_ops *dest_tf_ops = NULL, *tf_ops;
struct t10_pr_registration *pr_reg, *pr_res_holder, *dest_pr_reg;
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
unsigned char *buf;
unsigned char *initiator_str;
char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN];
@ -3823,7 +3819,7 @@ int target_scsi3_emulate_pr_out(struct se_cmd *cmd)
* initiator or service action and shall terminate with a RESERVATION
* CONFLICT status.
*/
if (cmd->se_dev->dev_flags & DF_SPC2_RESERVATIONS) {
if (cmd->se_dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) {
pr_err("Received PERSISTENT_RESERVE CDB while legacy"
" SPC-2 reservation is held, returning"
" RESERVATION_CONFLICT\n");
@ -3959,8 +3955,7 @@ int target_scsi3_emulate_pr_out(struct se_cmd *cmd)
*/
static int core_scsi3_pri_read_keys(struct se_cmd *cmd)
{
struct se_device *se_dev = cmd->se_dev;
struct se_subsystem_dev *su_dev = se_dev->se_sub_dev;
struct se_device *dev = cmd->se_dev;
struct t10_pr_registration *pr_reg;
unsigned char *buf;
u32 add_len = 0, off = 8;
@ -3973,13 +3968,13 @@ static int core_scsi3_pri_read_keys(struct se_cmd *cmd)
}
buf = transport_kmap_data_sg(cmd);
buf[0] = ((su_dev->t10_pr.pr_generation >> 24) & 0xff);
buf[1] = ((su_dev->t10_pr.pr_generation >> 16) & 0xff);
buf[2] = ((su_dev->t10_pr.pr_generation >> 8) & 0xff);
buf[3] = (su_dev->t10_pr.pr_generation & 0xff);
buf[0] = ((dev->t10_pr.pr_generation >> 24) & 0xff);
buf[1] = ((dev->t10_pr.pr_generation >> 16) & 0xff);
buf[2] = ((dev->t10_pr.pr_generation >> 8) & 0xff);
buf[3] = (dev->t10_pr.pr_generation & 0xff);
spin_lock(&su_dev->t10_pr.registration_lock);
list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list,
spin_lock(&dev->t10_pr.registration_lock);
list_for_each_entry(pr_reg, &dev->t10_pr.registration_list,
pr_reg_list) {
/*
* Check for overflow of 8byte PRI READ_KEYS payload and
@ -3999,7 +3994,7 @@ static int core_scsi3_pri_read_keys(struct se_cmd *cmd)
add_len += 8;
}
spin_unlock(&su_dev->t10_pr.registration_lock);
spin_unlock(&dev->t10_pr.registration_lock);
buf[4] = ((add_len >> 24) & 0xff);
buf[5] = ((add_len >> 16) & 0xff);
@ -4018,8 +4013,7 @@ static int core_scsi3_pri_read_keys(struct se_cmd *cmd)
*/
static int core_scsi3_pri_read_reservation(struct se_cmd *cmd)
{
struct se_device *se_dev = cmd->se_dev;
struct se_subsystem_dev *su_dev = se_dev->se_sub_dev;
struct se_device *dev = cmd->se_dev;
struct t10_pr_registration *pr_reg;
unsigned char *buf;
u64 pr_res_key;
@ -4033,13 +4027,13 @@ static int core_scsi3_pri_read_reservation(struct se_cmd *cmd)
}
buf = transport_kmap_data_sg(cmd);
buf[0] = ((su_dev->t10_pr.pr_generation >> 24) & 0xff);
buf[1] = ((su_dev->t10_pr.pr_generation >> 16) & 0xff);
buf[2] = ((su_dev->t10_pr.pr_generation >> 8) & 0xff);
buf[3] = (su_dev->t10_pr.pr_generation & 0xff);
buf[0] = ((dev->t10_pr.pr_generation >> 24) & 0xff);
buf[1] = ((dev->t10_pr.pr_generation >> 16) & 0xff);
buf[2] = ((dev->t10_pr.pr_generation >> 8) & 0xff);
buf[3] = (dev->t10_pr.pr_generation & 0xff);
spin_lock(&se_dev->dev_reservation_lock);
pr_reg = se_dev->dev_pr_res_holder;
spin_lock(&dev->dev_reservation_lock);
pr_reg = dev->dev_pr_res_holder;
if (pr_reg) {
/*
* Set the hardcoded Additional Length
@ -4090,7 +4084,7 @@ static int core_scsi3_pri_read_reservation(struct se_cmd *cmd)
}
err:
spin_unlock(&se_dev->dev_reservation_lock);
spin_unlock(&dev->dev_reservation_lock);
transport_kunmap_data_sg(cmd);
return 0;
@ -4104,7 +4098,7 @@ static int core_scsi3_pri_read_reservation(struct se_cmd *cmd)
static int core_scsi3_pri_report_capabilities(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
unsigned char *buf;
u16 add_len = 8; /* Hardcoded to 8. */
@ -4159,12 +4153,11 @@ static int core_scsi3_pri_report_capabilities(struct se_cmd *cmd)
*/
static int core_scsi3_pri_read_full_status(struct se_cmd *cmd)
{
struct se_device *se_dev = cmd->se_dev;
struct se_device *dev = cmd->se_dev;
struct se_node_acl *se_nacl;
struct se_subsystem_dev *su_dev = se_dev->se_sub_dev;
struct se_portal_group *se_tpg;
struct t10_pr_registration *pr_reg, *pr_reg_tmp;
struct t10_reservation *pr_tmpl = &se_dev->se_sub_dev->t10_pr;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
unsigned char *buf;
u32 add_desc_len = 0, add_len = 0, desc_len, exp_desc_len;
u32 off = 8; /* off into first Full Status descriptor */
@ -4179,10 +4172,10 @@ static int core_scsi3_pri_read_full_status(struct se_cmd *cmd)
buf = transport_kmap_data_sg(cmd);
buf[0] = ((su_dev->t10_pr.pr_generation >> 24) & 0xff);
buf[1] = ((su_dev->t10_pr.pr_generation >> 16) & 0xff);
buf[2] = ((su_dev->t10_pr.pr_generation >> 8) & 0xff);
buf[3] = (su_dev->t10_pr.pr_generation & 0xff);
buf[0] = ((dev->t10_pr.pr_generation >> 24) & 0xff);
buf[1] = ((dev->t10_pr.pr_generation >> 16) & 0xff);
buf[2] = ((dev->t10_pr.pr_generation >> 8) & 0xff);
buf[3] = (dev->t10_pr.pr_generation & 0xff);
spin_lock(&pr_tmpl->registration_lock);
list_for_each_entry_safe(pr_reg, pr_reg_tmp,
@ -4316,7 +4309,7 @@ int target_scsi3_emulate_pr_in(struct se_cmd *cmd)
* initiator or service action and shall terminate with a RESERVATION
* CONFLICT status.
*/
if (cmd->se_dev->dev_flags & DF_SPC2_RESERVATIONS) {
if (cmd->se_dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) {
pr_err("Received PERSISTENT_RESERVE CDB while legacy"
" SPC-2 reservation is held, returning"
" RESERVATION_CONFLICT\n");
@ -4363,30 +4356,25 @@ static int core_pt_seq_non_holder(
return 0;
}
int core_setup_reservations(struct se_device *dev, int force_pt)
void core_setup_reservations(struct se_device *dev)
{
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
struct t10_reservation *rest = &su_dev->t10_pr;
struct t10_reservation *rest = &dev->t10_pr;
/*
* If this device is from Target_Core_Mod/pSCSI, use the reservations
* of the Underlying SCSI hardware. In Linux/SCSI terms, this can
* cause a problem because libata and some SATA RAID HBAs appear
* under Linux/SCSI, but to emulate reservations themselves.
*/
if (((dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) &&
!(dev->se_sub_dev->se_dev_attrib.emulate_reservations)) || force_pt) {
if ((dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE) ||
(dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV &&
!dev->dev_attrib.emulate_reservations)) {
rest->res_type = SPC_PASSTHROUGH;
rest->pr_ops.t10_reservation_check = &core_pt_reservation_check;
rest->pr_ops.t10_seq_non_holder = &core_pt_seq_non_holder;
pr_debug("%s: Using SPC_PASSTHROUGH, no reservation"
" emulation\n", dev->transport->name);
return 0;
}
/*
* If SPC-3 or above is reported by real or emulated struct se_device,
* use emulated Persistent Reservations.
*/
if (dev->transport->get_device_rev(dev) >= SCSI_3) {
} else if (dev->transport->get_device_rev(dev) >= SCSI_3) {
rest->res_type = SPC3_PERSISTENT_RESERVATIONS;
rest->pr_ops.t10_reservation_check = &core_scsi3_pr_reservation_check;
rest->pr_ops.t10_seq_non_holder = &core_scsi3_pr_seq_non_holder;
@ -4400,6 +4388,4 @@ int core_setup_reservations(struct se_device *dev, int force_pt)
pr_debug("%s: Using SPC2_RESERVATIONS emulation\n",
dev->transport->name);
}
return 0;
}

2
drivers/target/target_core_pr.h
View file

@ -63,6 +63,6 @@ extern unsigned char *core_scsi3_pr_dump_type(int);
extern int target_scsi3_emulate_pr_in(struct se_cmd *);
extern int target_scsi3_emulate_pr_out(struct se_cmd *);
extern int core_setup_reservations(struct se_device *, int);
extern void core_setup_reservations(struct se_device *);
#endif /* TARGET_CORE_PR_H */

270
drivers/target/target_core_pscsi.c
View file

@ -53,6 +53,11 @@
#define ISPRINT(a) ((a >= ' ') && (a <= '~'))
static inline struct pscsi_dev_virt *PSCSI_DEV(struct se_device *dev)
{
return container_of(dev, struct pscsi_dev_virt, dev);
}
static struct se_subsystem_api pscsi_template;
static int pscsi_execute_cmd(struct se_cmd *cmd);
@ -219,7 +224,7 @@ pscsi_get_inquiry_vpd_serial(struct scsi_device *sdev, struct t10_wwn *wwn)
snprintf(&wwn->unit_serial[0], INQUIRY_VPD_SERIAL_LEN, "%s", &buf[4]);
wwn->t10_sub_dev->su_dev_flags |= SDF_FIRMWARE_VPD_UNIT_SERIAL;
wwn->t10_dev->dev_flags |= DF_FIRMWARE_VPD_UNIT_SERIAL;
kfree(buf);
return 0;
@ -299,23 +304,13 @@ pscsi_get_inquiry_vpd_device_ident(struct scsi_device *sdev,
kfree(buf);
}
/* pscsi_add_device_to_list():
*
*
*/
static struct se_device *pscsi_add_device_to_list(
struct se_hba *hba,
struct se_subsystem_dev *se_dev,
struct pscsi_dev_virt *pdv,
struct scsi_device *sd,
int dev_flags)
static int pscsi_add_device_to_list(struct se_device *dev,
struct scsi_device *sd)
{
struct se_device *dev;
struct se_dev_limits dev_limits;
struct request_queue *q;
struct queue_limits *limits;
struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
struct request_queue *q = sd->request_queue;
memset(&dev_limits, 0, sizeof(struct se_dev_limits));
pdv->pdv_sd = sd;
if (!sd->queue_depth) {
sd->queue_depth = PSCSI_DEFAULT_QUEUEDEPTH;
@ -324,54 +319,27 @@ static struct se_device *pscsi_add_device_to_list(
" queue_depth to %d\n", sd->channel, sd->id,
sd->lun, sd->queue_depth);
}
/*
* Setup the local scope queue_limits from struct request_queue->limits
* to pass into transport_add_device_to_core_hba() as struct se_dev_limits.
*/
q = sd->request_queue;
limits = &dev_limits.limits;
limits->logical_block_size = sd->sector_size;
limits->max_hw_sectors = min_t(int, sd->host->max_sectors, queue_max_hw_sectors(q));
limits->max_sectors = min_t(int, sd->host->max_sectors, queue_max_sectors(q));
dev_limits.hw_queue_depth = sd->queue_depth;
dev_limits.queue_depth = sd->queue_depth;
dev->dev_attrib.hw_block_size = sd->sector_size;
dev->dev_attrib.hw_max_sectors =
min_t(int, sd->host->max_sectors, queue_max_hw_sectors(q));
dev->dev_attrib.hw_queue_depth = sd->queue_depth;
/*
* Setup our standard INQUIRY info into se_dev->t10_wwn
*/
pscsi_set_inquiry_info(sd, &se_dev->t10_wwn);
/*
* Set the pointer pdv->pdv_sd to from passed struct scsi_device,
* which has already been referenced with Linux SCSI code with
* scsi_device_get() in this file's pscsi_create_virtdevice().
*
* The passthrough operations called by the transport_add_device_*
* function below will require this pointer to be set for passthroug
* ops.
*
* For the shutdown case in pscsi_free_device(), this struct
* scsi_device reference is released with Linux SCSI code
* scsi_device_put() and the pdv->pdv_sd cleared.
*/
pdv->pdv_sd = sd;
dev = transport_add_device_to_core_hba(hba, &pscsi_template,
se_dev, dev_flags, pdv,
&dev_limits, NULL, NULL);
if (!dev) {
pdv->pdv_sd = NULL;
return NULL;
}
pscsi_set_inquiry_info(sd, &dev->t10_wwn);
/*
* Locate VPD WWN Information used for various purposes within
* the Storage Engine.
*/
if (!pscsi_get_inquiry_vpd_serial(sd, &se_dev->t10_wwn)) {
if (!pscsi_get_inquiry_vpd_serial(sd, &dev->t10_wwn)) {
/*
* If VPD Unit Serial returned GOOD status, try
* VPD Device Identification page (0x83).
*/
pscsi_get_inquiry_vpd_device_ident(sd, &se_dev->t10_wwn);
pscsi_get_inquiry_vpd_device_ident(sd, &dev->t10_wwn);
}
/*
@ -379,10 +347,11 @@ static struct se_device *pscsi_add_device_to_list(
*/
if (sd->type == TYPE_TAPE)
pscsi_tape_read_blocksize(dev, sd);
return dev;
return 0;
}
static void *pscsi_allocate_virtdevice(struct se_hba *hba, const char *name)
static struct se_device *pscsi_alloc_device(struct se_hba *hba,
const char *name)
{
struct pscsi_dev_virt *pdv;
@ -391,139 +360,125 @@ static void *pscsi_allocate_virtdevice(struct se_hba *hba, const char *name)
pr_err("Unable to allocate memory for struct pscsi_dev_virt\n");
return NULL;
}
pdv->pdv_se_hba = hba;
pr_debug("PSCSI: Allocated pdv: %p for %s\n", pdv, name);
return pdv;
return &pdv->dev;
}
/*
* Called with struct Scsi_Host->host_lock called.
*/
static struct se_device *pscsi_create_type_disk(
struct scsi_device *sd,
struct pscsi_dev_virt *pdv,
struct se_subsystem_dev *se_dev,
struct se_hba *hba)
static int pscsi_create_type_disk(struct se_device *dev, struct scsi_device *sd)
__releases(sh->host_lock)
{
struct se_device *dev;
struct pscsi_hba_virt *phv = pdv->pdv_se_hba->hba_ptr;
struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr;
struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
struct Scsi_Host *sh = sd->host;
struct block_device *bd;
u32 dev_flags = 0;
int ret;
if (scsi_device_get(sd)) {
pr_err("scsi_device_get() failed for %d:%d:%d:%d\n",
sh->host_no, sd->channel, sd->id, sd->lun);
spin_unlock_irq(sh->host_lock);
return NULL;
return -EIO;
}
spin_unlock_irq(sh->host_lock);
/*
* Claim exclusive struct block_device access to struct scsi_device
* for TYPE_DISK using supplied udev_path
*/
bd = blkdev_get_by_path(se_dev->se_dev_udev_path,
bd = blkdev_get_by_path(dev->udev_path,
FMODE_WRITE|FMODE_READ|FMODE_EXCL, pdv);
if (IS_ERR(bd)) {
pr_err("pSCSI: blkdev_get_by_path() failed\n");
scsi_device_put(sd);
return NULL;
return PTR_ERR(bd);
}
pdv->pdv_bd = bd;
dev = pscsi_add_device_to_list(hba, se_dev, pdv, sd, dev_flags);
if (!dev) {
ret = pscsi_add_device_to_list(dev, sd);
if (ret) {
blkdev_put(pdv->pdv_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL);
scsi_device_put(sd);
return NULL;
return ret;
}
pr_debug("CORE_PSCSI[%d] - Added TYPE_DISK for %d:%d:%d:%d\n",
phv->phv_host_id, sh->host_no, sd->channel, sd->id, sd->lun);
return dev;
return 0;
}
/*
* Called with struct Scsi_Host->host_lock called.
*/
static struct se_device *pscsi_create_type_rom(
struct scsi_device *sd,
struct pscsi_dev_virt *pdv,
struct se_subsystem_dev *se_dev,
struct se_hba *hba)
static int pscsi_create_type_rom(struct se_device *dev, struct scsi_device *sd)
__releases(sh->host_lock)
{
struct se_device *dev;
struct pscsi_hba_virt *phv = pdv->pdv_se_hba->hba_ptr;
struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr;
struct Scsi_Host *sh = sd->host;
u32 dev_flags = 0;
int ret;
if (scsi_device_get(sd)) {
pr_err("scsi_device_get() failed for %d:%d:%d:%d\n",
sh->host_no, sd->channel, sd->id, sd->lun);
spin_unlock_irq(sh->host_lock);
return NULL;
return -EIO;
}
spin_unlock_irq(sh->host_lock);
dev = pscsi_add_device_to_list(hba, se_dev, pdv, sd, dev_flags);
if (!dev) {
ret = pscsi_add_device_to_list(dev, sd);
if (ret) {
scsi_device_put(sd);
return NULL;
return ret;
}
pr_debug("CORE_PSCSI[%d] - Added Type: %s for %d:%d:%d:%d\n",
phv->phv_host_id, scsi_device_type(sd->type), sh->host_no,
sd->channel, sd->id, sd->lun);
return dev;
return 0;
}
/*
*Called with struct Scsi_Host->host_lock called.
* Called with struct Scsi_Host->host_lock called.
*/
static struct se_device *pscsi_create_type_other(
struct scsi_device *sd,
struct pscsi_dev_virt *pdv,
struct se_subsystem_dev *se_dev,
struct se_hba *hba)
static int pscsi_create_type_other(struct se_device *dev,
struct scsi_device *sd)
__releases(sh->host_lock)
{
struct se_device *dev;
struct pscsi_hba_virt *phv = pdv->pdv_se_hba->hba_ptr;
struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr;
struct Scsi_Host *sh = sd->host;
u32 dev_flags = 0;
int ret;
spin_unlock_irq(sh->host_lock);
dev = pscsi_add_device_to_list(hba, se_dev, pdv, sd, dev_flags);
if (!dev)
return NULL;
ret = pscsi_add_device_to_list(dev, sd);
if (ret)
return ret;
pr_debug("CORE_PSCSI[%d] - Added Type: %s for %d:%d:%d:%d\n",
phv->phv_host_id, scsi_device_type(sd->type), sh->host_no,
sd->channel, sd->id, sd->lun);
return dev;
return 0;
}
static struct se_device *pscsi_create_virtdevice(
struct se_hba *hba,
struct se_subsystem_dev *se_dev,
void *p)
int pscsi_configure_device(struct se_device *dev)
{
struct pscsi_dev_virt *pdv = p;
struct se_device *dev;
struct se_hba *hba = dev->se_hba;
struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
struct scsi_device *sd;
struct pscsi_hba_virt *phv = hba->hba_ptr;
struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr;
struct Scsi_Host *sh = phv->phv_lld_host;
int legacy_mode_enable = 0;
int ret;
if (!pdv) {
pr_err("Unable to locate struct pscsi_dev_virt"
" parameter\n");
return ERR_PTR(-EINVAL);
if (!(pdv->pdv_flags & PDF_HAS_CHANNEL_ID) ||
!(pdv->pdv_flags & PDF_HAS_TARGET_ID) ||
!(pdv->pdv_flags & PDF_HAS_LUN_ID)) {
pr_err("Missing scsi_channel_id=, scsi_target_id= and"
" scsi_lun_id= parameters\n");
return -EINVAL;
}
/*
* If not running in PHV_LLD_SCSI_HOST_NO mode, locate the
* struct Scsi_Host we will need to bring the TCM/pSCSI object online
@ -532,16 +487,16 @@ static struct se_device *pscsi_create_virtdevice(
if (phv->phv_mode == PHV_LLD_SCSI_HOST_NO) {
pr_err("pSCSI: Unable to locate struct"
" Scsi_Host for PHV_LLD_SCSI_HOST_NO\n");
return ERR_PTR(-ENODEV);
return -ENODEV;
}
/*
* For the newer PHV_VIRTUAL_HOST_ID struct scsi_device
* reference, we enforce that udev_path has been set
*/
if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH)) {
if (!(dev->dev_flags & DF_USING_UDEV_PATH)) {
pr_err("pSCSI: udev_path attribute has not"
" been set before ENABLE=1\n");
return ERR_PTR(-EINVAL);
return -EINVAL;
}
/*
* If no scsi_host_id= was passed for PHV_VIRTUAL_HOST_ID,
@ -549,17 +504,14 @@ static struct se_device *pscsi_create_virtdevice(
* and enable for PHV_LLD_SCSI_HOST_NO mode.
*/
if (!(pdv->pdv_flags & PDF_HAS_VIRT_HOST_ID)) {
spin_lock(&hba->device_lock);
if (!list_empty(&hba->hba_dev_list)) {
if (hba->dev_count) {
pr_err("pSCSI: Unable to set hba_mode"
" with active devices\n");
spin_unlock(&hba->device_lock);
return ERR_PTR(-EEXIST);
return -EEXIST;
}
spin_unlock(&hba->device_lock);
if (pscsi_pmode_enable_hba(hba, 1) != 1)
return ERR_PTR(-ENODEV);
return -ENODEV;
legacy_mode_enable = 1;
hba->hba_flags |= HBA_FLAGS_PSCSI_MODE;
@ -569,14 +521,14 @@ static struct se_device *pscsi_create_virtdevice(
if (IS_ERR(sh)) {
pr_err("pSCSI: Unable to locate"
" pdv_host_id: %d\n", pdv->pdv_host_id);
return ERR_CAST(sh);
return PTR_ERR(sh);
}
}
} else {
if (phv->phv_mode == PHV_VIRTUAL_HOST_ID) {
pr_err("pSCSI: PHV_VIRTUAL_HOST_ID set while"
" struct Scsi_Host exists\n");
return ERR_PTR(-EEXIST);
return -EEXIST;
}
}
@ -593,17 +545,17 @@ static struct se_device *pscsi_create_virtdevice(
*/
switch (sd->type) {
case TYPE_DISK:
dev = pscsi_create_type_disk(sd, pdv, se_dev, hba);
ret = pscsi_create_type_disk(dev, sd);
break;
case TYPE_ROM:
dev = pscsi_create_type_rom(sd, pdv, se_dev, hba);
ret = pscsi_create_type_rom(dev, sd);
break;
default:
dev = pscsi_create_type_other(sd, pdv, se_dev, hba);
ret = pscsi_create_type_other(dev, sd);
break;
}
if (!dev) {
if (ret) {
if (phv->phv_mode == PHV_VIRTUAL_HOST_ID)
scsi_host_put(sh);
else if (legacy_mode_enable) {
@ -611,9 +563,9 @@ static struct se_device *pscsi_create_virtdevice(
hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE;
}
pdv->pdv_sd = NULL;
return ERR_PTR(-ENODEV);
return ret;
}
return dev;
return 0;
}
spin_unlock_irq(sh->host_lock);
@ -627,17 +579,13 @@ static struct se_device *pscsi_create_virtdevice(
hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE;
}
return ERR_PTR(-ENODEV);
return -ENODEV;
}
/* pscsi_free_device(): (Part of se_subsystem_api_t template)
*
*
*/
static void pscsi_free_device(void *p)
static void pscsi_free_device(struct se_device *dev)
{
struct pscsi_dev_virt *pdv = p;
struct pscsi_hba_virt *phv = pdv->pdv_se_hba->hba_ptr;
struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr;
struct scsi_device *sd = pdv->pdv_sd;
if (sd) {
@ -670,7 +618,7 @@ static void pscsi_free_device(void *p)
static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg,
unsigned char *sense_buffer)
{
struct pscsi_dev_virt *pdv = cmd->se_dev->dev_ptr;
struct pscsi_dev_virt *pdv = PSCSI_DEV(cmd->se_dev);
struct scsi_device *sd = pdv->pdv_sd;
int result;
struct pscsi_plugin_task *pt = cmd->priv;
@ -770,13 +718,11 @@ static match_table_t tokens = {
{Opt_err, NULL}
};
static ssize_t pscsi_set_configfs_dev_params(struct se_hba *hba,
struct se_subsystem_dev *se_dev,
const char *page,
ssize_t count)
static ssize_t pscsi_set_configfs_dev_params(struct se_device *dev,
const char *page, ssize_t count)
{
struct pscsi_dev_virt *pdv = se_dev->se_dev_su_ptr;
struct pscsi_hba_virt *phv = hba->hba_ptr;
struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr;
char *orig, *ptr, *opts;
substring_t args[MAX_OPT_ARGS];
int ret = 0, arg, token;
@ -841,29 +787,10 @@ static ssize_t pscsi_set_configfs_dev_params(struct se_hba *hba,
return (!ret) ? count : ret;
}
static ssize_t pscsi_check_configfs_dev_params(
struct se_hba *hba,
struct se_subsystem_dev *se_dev)
static ssize_t pscsi_show_configfs_dev_params(struct se_device *dev, char *b)
{
struct pscsi_dev_virt *pdv = se_dev->se_dev_su_ptr;
if (!(pdv->pdv_flags & PDF_HAS_CHANNEL_ID) ||
!(pdv->pdv_flags & PDF_HAS_TARGET_ID) ||
!(pdv->pdv_flags & PDF_HAS_LUN_ID)) {
pr_err("Missing scsi_channel_id=, scsi_target_id= and"
" scsi_lun_id= parameters\n");
return -EINVAL;
}
return 0;
}
static ssize_t pscsi_show_configfs_dev_params(struct se_hba *hba,
struct se_subsystem_dev *se_dev,
char *b)
{
struct pscsi_hba_virt *phv = hba->hba_ptr;
struct pscsi_dev_virt *pdv = se_dev->se_dev_su_ptr;
struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr;
struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
struct scsi_device *sd = pdv->pdv_sd;
unsigned char host_id[16];
ssize_t bl;
@ -933,7 +860,7 @@ static int pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl,
u32 sgl_nents, enum dma_data_direction data_direction,
struct bio **hbio)
{
struct pscsi_dev_virt *pdv = cmd->se_dev->dev_ptr;
struct pscsi_dev_virt *pdv = PSCSI_DEV(cmd->se_dev);
struct bio *bio = NULL, *tbio = NULL;
struct page *page;
struct scatterlist *sg;
@ -1104,7 +1031,7 @@ static int pscsi_execute_cmd(struct se_cmd *cmd)
struct scatterlist *sgl = cmd->t_data_sg;
u32 sgl_nents = cmd->t_data_nents;
enum dma_data_direction data_direction = cmd->data_direction;
struct pscsi_dev_virt *pdv = cmd->se_dev->dev_ptr;
struct pscsi_dev_virt *pdv = PSCSI_DEV(cmd->se_dev);
struct pscsi_plugin_task *pt;
struct request *req;
struct bio *hbio;
@ -1191,7 +1118,7 @@ static int pscsi_execute_cmd(struct se_cmd *cmd)
*/
static u32 pscsi_get_device_rev(struct se_device *dev)
{
struct pscsi_dev_virt *pdv = dev->dev_ptr;
struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
struct scsi_device *sd = pdv->pdv_sd;
return (sd->scsi_level - 1) ? sd->scsi_level - 1 : 1;
@ -1203,7 +1130,7 @@ static u32 pscsi_get_device_rev(struct se_device *dev)
*/
static u32 pscsi_get_device_type(struct se_device *dev)
{
struct pscsi_dev_virt *pdv = dev->dev_ptr;
struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
struct scsi_device *sd = pdv->pdv_sd;
return sd->type;
@ -1211,7 +1138,7 @@ static u32 pscsi_get_device_type(struct se_device *dev)
static sector_t pscsi_get_blocks(struct se_device *dev)
{
struct pscsi_dev_virt *pdv = dev->dev_ptr;
struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
if (pdv->pdv_bd && pdv->pdv_bd->bd_part)
return pdv->pdv_bd->bd_part->nr_sects;
@ -1259,12 +1186,11 @@ static struct se_subsystem_api pscsi_template = {
.attach_hba = pscsi_attach_hba,
.detach_hba = pscsi_detach_hba,
.pmode_enable_hba = pscsi_pmode_enable_hba,
.allocate_virtdevice = pscsi_allocate_virtdevice,
.create_virtdevice = pscsi_create_virtdevice,
.alloc_device = pscsi_alloc_device,
.configure_device = pscsi_configure_device,
.free_device = pscsi_free_device,
.transport_complete = pscsi_transport_complete,
.parse_cdb = pscsi_parse_cdb,
.check_configfs_dev_params = pscsi_check_configfs_dev_params,
.set_configfs_dev_params = pscsi_set_configfs_dev_params,
.show_configfs_dev_params = pscsi_show_configfs_dev_params,
.get_device_rev = pscsi_get_device_rev,

2
drivers/target/target_core_pscsi.h
View file

@ -37,6 +37,7 @@ struct pscsi_plugin_task {
#define PDF_HAS_VIRT_HOST_ID 0x20
struct pscsi_dev_virt {
struct se_device dev;
int pdv_flags;
int pdv_host_id;
int pdv_channel_id;
@ -44,7 +45,6 @@ struct pscsi_dev_virt {
int pdv_lun_id;
struct block_device *pdv_bd;
struct scsi_device *pdv_sd;
struct se_hba *pdv_se_hba;
} ____cacheline_aligned;
typedef enum phv_modes {

94
drivers/target/target_core_rd.c
View file

@ -41,7 +41,10 @@
#include "target_core_rd.h"
static struct se_subsystem_api rd_mcp_template;
static inline struct rd_dev *RD_DEV(struct se_device *dev)
{
return container_of(dev, struct rd_dev, dev);
}
/* rd_attach_hba(): (Part of se_subsystem_api_t template)
*
@ -196,7 +199,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
return 0;
}
static void *rd_allocate_virtdevice(struct se_hba *hba, const char *name)
static struct se_device *rd_alloc_device(struct se_hba *hba, const char *name)
{
struct rd_dev *rd_dev;
struct rd_host *rd_host = hba->hba_ptr;
@ -209,39 +212,27 @@ static void *rd_allocate_virtdevice(struct se_hba *hba, const char *name)
rd_dev->rd_host = rd_host;
return rd_dev;
return &rd_dev->dev;
}
static struct se_device *rd_create_virtdevice(struct se_hba *hba,
struct se_subsystem_dev *se_dev, void *p)
static int rd_configure_device(struct se_device *dev)
{
struct se_device *dev;
struct se_dev_limits dev_limits;
struct rd_dev *rd_dev = p;
struct rd_host *rd_host = hba->hba_ptr;
int dev_flags = 0, ret;
char prod[16], rev[4];
struct rd_dev *rd_dev = RD_DEV(dev);
struct rd_host *rd_host = dev->se_hba->hba_ptr;
int ret;
memset(&dev_limits, 0, sizeof(struct se_dev_limits));
if (!(rd_dev->rd_flags & RDF_HAS_PAGE_COUNT)) {
pr_debug("Missing rd_pages= parameter\n");
return -EINVAL;
}
ret = rd_build_device_space(rd_dev);
if (ret < 0)
goto fail;
snprintf(prod, 16, "RAMDISK-MCP");
snprintf(rev, 4, "%s", RD_MCP_VERSION);
dev_limits.limits.logical_block_size = RD_BLOCKSIZE;
dev_limits.limits.max_hw_sectors = UINT_MAX;
dev_limits.limits.max_sectors = UINT_MAX;
dev_limits.hw_queue_depth = RD_MAX_DEVICE_QUEUE_DEPTH;
dev_limits.queue_depth = RD_DEVICE_QUEUE_DEPTH;
dev = transport_add_device_to_core_hba(hba,
&rd_mcp_template, se_dev, dev_flags, rd_dev,
&dev_limits, prod, rev);
if (!dev)
goto fail;
dev->dev_attrib.hw_block_size = RD_BLOCKSIZE;
dev->dev_attrib.hw_max_sectors = UINT_MAX;
dev->dev_attrib.hw_queue_depth = RD_MAX_DEVICE_QUEUE_DEPTH;
rd_dev->rd_dev_id = rd_host->rd_host_dev_id_count++;
@ -251,16 +242,16 @@ static struct se_device *rd_create_virtdevice(struct se_hba *hba,
rd_dev->sg_table_count,
(unsigned long)(rd_dev->rd_page_count * PAGE_SIZE));
return dev;
return 0;
fail:
rd_release_device_space(rd_dev);
return ERR_PTR(ret);
return ret;
}
static void rd_free_device(void *p)
static void rd_free_device(struct se_device *dev)
{
struct rd_dev *rd_dev = p;
struct rd_dev *rd_dev = RD_DEV(dev);
rd_release_device_space(rd_dev);
kfree(rd_dev);
@ -290,7 +281,7 @@ static int rd_execute_rw(struct se_cmd *cmd)
u32 sgl_nents = cmd->t_data_nents;
enum dma_data_direction data_direction = cmd->data_direction;
struct se_device *se_dev = cmd->se_dev;
struct rd_dev *dev = se_dev->dev_ptr;
struct rd_dev *dev = RD_DEV(se_dev);
struct rd_dev_sg_table *table;
struct scatterlist *rd_sg;
struct sg_mapping_iter m;
@ -300,7 +291,7 @@ static int rd_execute_rw(struct se_cmd *cmd)
u32 src_len;
u64 tmp;
tmp = cmd->t_task_lba * se_dev->se_sub_dev->se_dev_attrib.block_size;
tmp = cmd->t_task_lba * se_dev->dev_attrib.block_size;
rd_offset = do_div(tmp, PAGE_SIZE);
rd_page = tmp;
rd_size = cmd->data_length;
@ -378,13 +369,10 @@ static match_table_t tokens = {
{Opt_err, NULL}
};
static ssize_t rd_set_configfs_dev_params(
struct se_hba *hba,
struct se_subsystem_dev *se_dev,
const char *page,
ssize_t count)
static ssize_t rd_set_configfs_dev_params(struct se_device *dev,
const char *page, ssize_t count)
{
struct rd_dev *rd_dev = se_dev->se_dev_su_ptr;
struct rd_dev *rd_dev = RD_DEV(dev);
char *orig, *ptr, *opts;
substring_t args[MAX_OPT_ARGS];
int ret = 0, arg, token;
@ -417,24 +405,10 @@ static ssize_t rd_set_configfs_dev_params(
return (!ret) ? count : ret;
}
static ssize_t rd_check_configfs_dev_params(struct se_hba *hba, struct se_subsystem_dev *se_dev)
static ssize_t rd_show_configfs_dev_params(struct se_device *dev, char *b)
{
struct rd_dev *rd_dev = se_dev->se_dev_su_ptr;
struct rd_dev *rd_dev = RD_DEV(dev);
if (!(rd_dev->rd_flags & RDF_HAS_PAGE_COUNT)) {
pr_debug("Missing rd_pages= parameter\n");
return -EINVAL;
}
return 0;
}
static ssize_t rd_show_configfs_dev_params(
struct se_hba *hba,
struct se_subsystem_dev *se_dev,
char *b)
{
struct rd_dev *rd_dev = se_dev->se_dev_su_ptr;
ssize_t bl = sprintf(b, "TCM RamDisk ID: %u RamDisk Makeup: rd_mcp\n",
rd_dev->rd_dev_id);
bl += sprintf(b + bl, " PAGES/PAGE_SIZE: %u*%lu"
@ -455,9 +429,10 @@ static u32 rd_get_device_type(struct se_device *dev)
static sector_t rd_get_blocks(struct se_device *dev)
{
struct rd_dev *rd_dev = dev->dev_ptr;
struct rd_dev *rd_dev = RD_DEV(dev);
unsigned long long blocks_long = ((rd_dev->rd_page_count * PAGE_SIZE) /
dev->se_sub_dev->se_dev_attrib.block_size) - 1;
dev->dev_attrib.block_size) - 1;
return blocks_long;
}
@ -473,14 +448,15 @@ static int rd_parse_cdb(struct se_cmd *cmd)
static struct se_subsystem_api rd_mcp_template = {
.name = "rd_mcp",
.inquiry_prod = "RAMDISK-MCP",
.inquiry_rev = RD_MCP_VERSION,
.transport_type = TRANSPORT_PLUGIN_VHBA_VDEV,
.attach_hba = rd_attach_hba,
.detach_hba = rd_detach_hba,
.allocate_virtdevice = rd_allocate_virtdevice,
.create_virtdevice = rd_create_virtdevice,
.alloc_device = rd_alloc_device,
.configure_device = rd_configure_device,
.free_device = rd_free_device,
.parse_cdb = rd_parse_cdb,
.check_configfs_dev_params = rd_check_configfs_dev_params,
.set_configfs_dev_params = rd_set_configfs_dev_params,
.show_configfs_dev_params = rd_show_configfs_dev_params,
.get_device_rev = rd_get_device_rev,

1
drivers/target/target_core_rd.h
View file

@ -24,6 +24,7 @@ struct rd_dev_sg_table {
#define RDF_HAS_PAGE_COUNT 0x01
struct rd_dev {
struct se_device dev;
u32 rd_flags;
/* Unique Ramdisk Device ID in Ramdisk HBA */
u32 rd_dev_id;

31
drivers/target/target_core_sbc.c
View file

@ -54,10 +54,10 @@ static int sbc_emulate_readcapacity(struct se_cmd *cmd)
buf[1] = (blocks >> 16) & 0xff;
buf[2] = (blocks >> 8) & 0xff;
buf[3] = blocks & 0xff;
buf[4] = (dev->se_sub_dev->se_dev_attrib.block_size >> 24) & 0xff;
buf[5] = (dev->se_sub_dev->se_dev_attrib.block_size >> 16) & 0xff;
buf[6] = (dev->se_sub_dev->se_dev_attrib.block_size >> 8) & 0xff;
buf[7] = dev->se_sub_dev->se_dev_attrib.block_size & 0xff;
buf[4] = (dev->dev_attrib.block_size >> 24) & 0xff;
buf[5] = (dev->dev_attrib.block_size >> 16) & 0xff;
buf[6] = (dev->dev_attrib.block_size >> 8) & 0xff;
buf[7] = dev->dev_attrib.block_size & 0xff;
rbuf = transport_kmap_data_sg(cmd);
if (rbuf) {
@ -85,15 +85,15 @@ static int sbc_emulate_readcapacity_16(struct se_cmd *cmd)
buf[5] = (blocks >> 16) & 0xff;
buf[6] = (blocks >> 8) & 0xff;
buf[7] = blocks & 0xff;
buf[8] = (dev->se_sub_dev->se_dev_attrib.block_size >> 24) & 0xff;
buf[9] = (dev->se_sub_dev->se_dev_attrib.block_size >> 16) & 0xff;
buf[10] = (dev->se_sub_dev->se_dev_attrib.block_size >> 8) & 0xff;
buf[11] = dev->se_sub_dev->se_dev_attrib.block_size & 0xff;
buf[8] = (dev->dev_attrib.block_size >> 24) & 0xff;
buf[9] = (dev->dev_attrib.block_size >> 16) & 0xff;
buf[10] = (dev->dev_attrib.block_size >> 8) & 0xff;
buf[11] = dev->dev_attrib.block_size & 0xff;
/*
* Set Thin Provisioning Enable bit following sbc3r22 in section
* READ CAPACITY (16) byte 14 if emulate_tpu or emulate_tpws is enabled.
*/
if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws)
if (dev->dev_attrib.emulate_tpu || dev->dev_attrib.emulate_tpws)
buf[14] = 0x80;
rbuf = transport_kmap_data_sg(cmd);
@ -143,7 +143,7 @@ static int sbc_emulate_noop(struct se_cmd *cmd)
static inline u32 sbc_get_size(struct se_cmd *cmd, u32 sectors)
{
return cmd->se_dev->se_sub_dev->se_dev_attrib.block_size * sectors;
return cmd->se_dev->dev_attrib.block_size * sectors;
}
static int sbc_check_valid_sectors(struct se_cmd *cmd)
@ -152,7 +152,7 @@ static int sbc_check_valid_sectors(struct se_cmd *cmd)
unsigned long long end_lba;
u32 sectors;
sectors = cmd->data_length / dev->se_sub_dev->se_dev_attrib.block_size;
sectors = cmd->data_length / dev->dev_attrib.block_size;
end_lba = dev->transport->get_blocks(dev) + 1;
if (cmd->t_task_lba + sectors > end_lba) {
@ -315,7 +315,6 @@ static void xdreadwrite_callback(struct se_cmd *cmd)
int sbc_parse_cdb(struct se_cmd *cmd, struct spc_ops *ops)
{
struct se_subsystem_dev *su_dev = cmd->se_dev->se_sub_dev;
struct se_device *dev = cmd->se_dev;
unsigned char *cdb = cmd->t_task_cdb;
unsigned int size;
@ -562,18 +561,18 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct spc_ops *ops)
if (cmd->se_cmd_flags & SCF_SCSI_DATA_CDB) {
unsigned long long end_lba;
if (sectors > su_dev->se_dev_attrib.fabric_max_sectors) {
if (sectors > dev->dev_attrib.fabric_max_sectors) {
printk_ratelimited(KERN_ERR "SCSI OP %02xh with too"
" big sectors %u exceeds fabric_max_sectors:"
" %u\n", cdb[0], sectors,
su_dev->se_dev_attrib.fabric_max_sectors);
dev->dev_attrib.fabric_max_sectors);
goto out_invalid_cdb_field;
}
if (sectors > su_dev->se_dev_attrib.hw_max_sectors) {
if (sectors > dev->dev_attrib.hw_max_sectors) {
printk_ratelimited(KERN_ERR "SCSI OP %02xh with too"
" big sectors %u exceeds backend hw_max_sectors:"
" %u\n", cdb[0], sectors,
su_dev->se_dev_attrib.hw_max_sectors);
dev->dev_attrib.hw_max_sectors);
goto out_invalid_cdb_field;
}

91
drivers/target/target_core_spc.c
View file

@ -95,14 +95,14 @@ static int spc_emulate_inquiry_std(struct se_cmd *cmd, char *buf)
/*
* Enable SCCS and TPGS fields for Emulated ALUA
*/
if (dev->se_sub_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED)
if (dev->t10_alua.alua_type == SPC3_ALUA_EMULATED)
spc_fill_alua_data(lun->lun_sep, buf);
buf[7] = 0x2; /* CmdQue=1 */
snprintf(&buf[8], 8, "LIO-ORG");
snprintf(&buf[16], 16, "%s", dev->se_sub_dev->t10_wwn.model);
snprintf(&buf[32], 4, "%s", dev->se_sub_dev->t10_wwn.revision);
snprintf(&buf[16], 16, "%s", dev->t10_wwn.model);
snprintf(&buf[32], 4, "%s", dev->t10_wwn.revision);
buf[4] = 31; /* Set additional length to 31 */
return 0;
@ -114,15 +114,13 @@ static int spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf)
struct se_device *dev = cmd->se_dev;
u16 len = 0;
if (dev->se_sub_dev->su_dev_flags &
SDF_EMULATED_VPD_UNIT_SERIAL) {
if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) {
u32 unit_serial_len;
unit_serial_len = strlen(dev->se_sub_dev->t10_wwn.unit_serial);
unit_serial_len = strlen(dev->t10_wwn.unit_serial);
unit_serial_len++; /* For NULL Terminator */
len += sprintf(&buf[4], "%s",
dev->se_sub_dev->t10_wwn.unit_serial);
len += sprintf(&buf[4], "%s", dev->t10_wwn.unit_serial);
len++; /* Extra Byte for NULL Terminator */
buf[3] = len;
}
@ -132,7 +130,7 @@ static int spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf)
static void spc_parse_naa_6h_vendor_specific(struct se_device *dev,
unsigned char *buf)
{
unsigned char *p = &dev->se_sub_dev->t10_wwn.unit_serial[0];
unsigned char *p = &dev->t10_wwn.unit_serial[0];
int cnt;
bool next = true;
@ -173,7 +171,7 @@ static int spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf)
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->se_sub_dev->t10_wwn.model[0];
unsigned char *prod = &dev->t10_wwn.model[0];
u32 prod_len;
u32 unit_serial_len, off = 0;
u16 len = 0, id_len;
@ -188,7 +186,7 @@ static int spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf)
* /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial
* value in order to return the NAA id.
*/
if (!(dev->se_sub_dev->su_dev_flags & SDF_EMULATED_VPD_UNIT_SERIAL))
if (!(dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL))
goto check_t10_vend_desc;
/* CODE SET == Binary */
@ -236,14 +234,12 @@ static int spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf)
prod_len += strlen(prod);
prod_len++; /* For : */
if (dev->se_sub_dev->su_dev_flags &
SDF_EMULATED_VPD_UNIT_SERIAL) {
unit_serial_len =
strlen(&dev->se_sub_dev->t10_wwn.unit_serial[0]);
if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) {
unit_serial_len = strlen(&dev->t10_wwn.unit_serial[0]);
unit_serial_len++; /* For NULL Terminator */
id_len += sprintf(&buf[off+12], "%s:%s", prod,
&dev->se_sub_dev->t10_wwn.unit_serial[0]);
&dev->t10_wwn.unit_serial[0]);
}
buf[off] = 0x2; /* ASCII */
buf[off+1] = 0x1; /* T10 Vendor ID */
@ -298,8 +294,7 @@ static int spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf)
* Get the PROTOCOL IDENTIFIER as defined by spc4r17
* section 7.5.1 Table 362
*/
if (dev->se_sub_dev->t10_alua.alua_type !=
SPC3_ALUA_EMULATED)
if (dev->t10_alua.alua_type != SPC3_ALUA_EMULATED)
goto check_scsi_name;
tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
@ -422,7 +417,7 @@ static int spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf)
buf[5] = 0x07;
/* If WriteCache emulation is enabled, set V_SUP */
if (cmd->se_dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0)
if (cmd->se_dev->dev_attrib.emulate_write_cache > 0)
buf[6] = 0x01;
return 0;
}
@ -439,7 +434,7 @@ static int spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
* emulate_tpu=1 or emulate_tpws=1 we will be expect a
* different page length for Thin Provisioning.
*/
if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws)
if (dev->dev_attrib.emulate_tpu || dev->dev_attrib.emulate_tpws)
have_tp = 1;
buf[0] = dev->transport->get_device_type(dev);
@ -456,14 +451,14 @@ static int spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
/*
* Set MAXIMUM TRANSFER LENGTH
*/
max_sectors = min(dev->se_sub_dev->se_dev_attrib.fabric_max_sectors,
dev->se_sub_dev->se_dev_attrib.hw_max_sectors);
max_sectors = min(dev->dev_attrib.fabric_max_sectors,
dev->dev_attrib.hw_max_sectors);
put_unaligned_be32(max_sectors, &buf[8]);
/*
* Set OPTIMAL TRANSFER LENGTH
*/
put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.optimal_sectors, &buf[12]);
put_unaligned_be32(dev->dev_attrib.optimal_sectors, &buf[12]);
/*
* Exit now if we don't support TP.
@ -474,25 +469,25 @@ static int spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
/*
* Set MAXIMUM UNMAP LBA COUNT
*/
put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count, &buf[20]);
put_unaligned_be32(dev->dev_attrib.max_unmap_lba_count, &buf[20]);
/*
* Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT
*/
put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count,
put_unaligned_be32(dev->dev_attrib.max_unmap_block_desc_count,
&buf[24]);
/*
* Set OPTIMAL UNMAP GRANULARITY
*/
put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.unmap_granularity, &buf[28]);
put_unaligned_be32(dev->dev_attrib.unmap_granularity, &buf[28]);
/*
* UNMAP GRANULARITY ALIGNMENT
*/
put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment,
put_unaligned_be32(dev->dev_attrib.unmap_granularity_alignment,
&buf[32]);
if (dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment != 0)
if (dev->dev_attrib.unmap_granularity_alignment != 0)
buf[32] |= 0x80; /* Set the UGAVALID bit */
return 0;
@ -505,7 +500,7 @@ static int spc_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf)
buf[0] = dev->transport->get_device_type(dev);
buf[3] = 0x3c;
buf[5] = dev->se_sub_dev->se_dev_attrib.is_nonrot ? 1 : 0;
buf[5] = dev->dev_attrib.is_nonrot ? 1 : 0;
return 0;
}
@ -546,7 +541,7 @@ static int spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf)
* the UNMAP command (see 5.25). A TPU bit set to zero indicates
* that the device server does not support the UNMAP command.
*/
if (dev->se_sub_dev->se_dev_attrib.emulate_tpu != 0)
if (dev->dev_attrib.emulate_tpu != 0)
buf[5] = 0x80;
/*
@ -555,7 +550,7 @@ static int spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf)
* A TPWS bit set to zero indicates that the device server does not
* support the use of the WRITE SAME (16) command to unmap LBAs.
*/
if (dev->se_sub_dev->se_dev_attrib.emulate_tpws != 0)
if (dev->dev_attrib.emulate_tpws != 0)
buf[5] |= 0x40;
return 0;
@ -586,8 +581,7 @@ static int spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf)
* Registered Extended LUN WWN has been set via ConfigFS
* during device creation/restart.
*/
if (cmd->se_dev->se_sub_dev->su_dev_flags &
SDF_EMULATED_VPD_UNIT_SERIAL) {
if (cmd->se_dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) {
buf[3] = ARRAY_SIZE(evpd_handlers);
for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p)
buf[p + 4] = evpd_handlers[p].page;
@ -690,7 +684,7 @@ static int spc_modesense_control(struct se_device *dev, unsigned char *p)
* command sequence order shall be explicitly handled by the application client
* through the selection of appropriate ommands and task attributes.
*/
p[3] = (dev->se_sub_dev->se_dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10;
p[3] = (dev->dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10;
/*
* From spc4r17, section 7.4.6 Control mode Page
*
@ -720,8 +714,8 @@ static int spc_modesense_control(struct se_device *dev, unsigned char *p)
* for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless
* to the number of commands completed with one of those status codes.
*/
p[4] = (dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl == 2) ? 0x30 :
(dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00;
p[4] = (dev->dev_attrib.emulate_ua_intlck_ctrl == 2) ? 0x30 :
(dev->dev_attrib.emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00;
/*
* From spc4r17, section 7.4.6 Control mode Page
*
@ -734,7 +728,7 @@ static int spc_modesense_control(struct se_device *dev, unsigned char *p)
* which the command was received shall be completed with TASK ABORTED
* status (see SAM-4).
*/
p[5] = (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? 0x40 : 0x00;
p[5] = (dev->dev_attrib.emulate_tas) ? 0x40 : 0x00;
p[8] = 0xff;
p[9] = 0xff;
p[11] = 30;
@ -746,7 +740,7 @@ static int spc_modesense_caching(struct se_device *dev, unsigned char *p)
{
p[0] = 0x08;
p[1] = 0x12;
if (dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0)
if (dev->dev_attrib.emulate_write_cache > 0)
p[2] = 0x04; /* Write Cache Enable */
p[12] = 0x20; /* Disabled Read Ahead */
@ -826,8 +820,8 @@ static int spc_emulate_modesense(struct se_cmd *cmd)
(cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)))
spc_modesense_write_protect(&buf[3], type);
if ((dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) &&
(dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0))
if ((dev->dev_attrib.emulate_write_cache > 0) &&
(dev->dev_attrib.emulate_fua_write > 0))
spc_modesense_dpofua(&buf[3], type);
} else {
offset -= 1;
@ -839,8 +833,8 @@ static int spc_emulate_modesense(struct se_cmd *cmd)
(cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)))
spc_modesense_write_protect(&buf[2], type);
if ((dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) &&
(dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0))
if ((dev->dev_attrib.emulate_write_cache > 0) &&
(dev->dev_attrib.emulate_fua_write > 0))
spc_modesense_dpofua(&buf[2], type);
}
@ -923,7 +917,6 @@ static int spc_emulate_testunitready(struct se_cmd *cmd)
int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
{
struct se_device *dev = cmd->se_dev;
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
unsigned char *cdb = cmd->t_task_cdb;
switch (cdb[0]) {
@ -946,12 +939,12 @@ int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
*size = (cdb[7] << 8) + cdb[8];
break;
case PERSISTENT_RESERVE_IN:
if (su_dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS)
if (dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS)
cmd->execute_cmd = target_scsi3_emulate_pr_in;
*size = (cdb[7] << 8) + cdb[8];
break;
case PERSISTENT_RESERVE_OUT:
if (su_dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS)
if (dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS)
cmd->execute_cmd = target_scsi3_emulate_pr_out;
*size = (cdb[7] << 8) + cdb[8];
break;
@ -962,7 +955,7 @@ int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
else
*size = cmd->data_length;
if (su_dev->t10_pr.res_type != SPC_PASSTHROUGH)
if (dev->t10_pr.res_type != SPC_PASSTHROUGH)
cmd->execute_cmd = target_scsi2_reservation_release;
break;
case RESERVE:
@ -983,7 +976,7 @@ int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
* is running in SPC_PASSTHROUGH, and wants reservations
* emulation disabled.
*/
if (su_dev->t10_pr.res_type != SPC_PASSTHROUGH)
if (dev->t10_pr.res_type != SPC_PASSTHROUGH)
cmd->execute_cmd = target_scsi2_reservation_reserve;
break;
case REQUEST_SENSE:
@ -1040,7 +1033,7 @@ int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
* Check for emulated MI_REPORT_TARGET_PGS
*/
if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS &&
su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
cmd->execute_cmd =
target_emulate_report_target_port_groups;
}
@ -1059,7 +1052,7 @@ int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
* Check for emulated MO_SET_TARGET_PGS.
*/
if (cdb[1] == MO_SET_TARGET_PGS &&
su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
cmd->execute_cmd =
target_emulate_set_target_port_groups;
}

307
drivers/target/target_core_stat.c
View file

@ -80,13 +80,9 @@ static struct target_stat_scsi_dev_attribute \
static ssize_t target_stat_scsi_dev_show_attr_inst(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_hba *hba = se_subdev->se_dev_hba;
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
struct se_hba *hba = dev->se_hba;
return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
}
@ -95,12 +91,8 @@ DEV_STAT_SCSI_DEV_ATTR_RO(inst);
static ssize_t target_stat_scsi_dev_show_attr_indx(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
return snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
}
@ -109,13 +101,6 @@ DEV_STAT_SCSI_DEV_ATTR_RO(indx);
static ssize_t target_stat_scsi_dev_show_attr_role(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
return snprintf(page, PAGE_SIZE, "Target\n");
}
DEV_STAT_SCSI_DEV_ATTR_RO(role);
@ -123,12 +108,8 @@ DEV_STAT_SCSI_DEV_ATTR_RO(role);
static ssize_t target_stat_scsi_dev_show_attr_ports(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
return snprintf(page, PAGE_SIZE, "%u\n", dev->dev_port_count);
}
@ -176,13 +157,9 @@ static struct target_stat_scsi_tgt_dev_attribute \
static ssize_t target_stat_scsi_tgt_dev_show_attr_inst(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_hba *hba = se_subdev->se_dev_hba;
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
struct se_hba *hba = dev->se_hba;
return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
}
@ -191,12 +168,8 @@ DEV_STAT_SCSI_TGT_DEV_ATTR_RO(inst);
static ssize_t target_stat_scsi_tgt_dev_show_attr_indx(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
return snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
}
@ -205,13 +178,6 @@ DEV_STAT_SCSI_TGT_DEV_ATTR_RO(indx);
static ssize_t target_stat_scsi_tgt_dev_show_attr_num_lus(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
return snprintf(page, PAGE_SIZE, "%u\n", LU_COUNT);
}
DEV_STAT_SCSI_TGT_DEV_ATTR_RO(num_lus);
@ -219,60 +185,27 @@ DEV_STAT_SCSI_TGT_DEV_ATTR_RO(num_lus);
static ssize_t target_stat_scsi_tgt_dev_show_attr_status(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
char status[16];
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
if (!dev)
return -ENODEV;
switch (dev->dev_status) {
case TRANSPORT_DEVICE_ACTIVATED:
strcpy(status, "activated");
break;
case TRANSPORT_DEVICE_DEACTIVATED:
strcpy(status, "deactivated");
break;
case TRANSPORT_DEVICE_SHUTDOWN:
strcpy(status, "shutdown");
break;
case TRANSPORT_DEVICE_OFFLINE_ACTIVATED:
case TRANSPORT_DEVICE_OFFLINE_DEACTIVATED:
strcpy(status, "offline");
break;
default:
sprintf(status, "unknown(%d)", dev->dev_status);
break;
}
return snprintf(page, PAGE_SIZE, "%s\n", status);
if (dev->export_count)
return snprintf(page, PAGE_SIZE, "activated");
else
return snprintf(page, PAGE_SIZE, "deactivated");
}
DEV_STAT_SCSI_TGT_DEV_ATTR_RO(status);
static ssize_t target_stat_scsi_tgt_dev_show_attr_non_access_lus(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
int non_accessible_lus;
if (!dev)
return -ENODEV;
switch (dev->dev_status) {
case TRANSPORT_DEVICE_ACTIVATED:
if (dev->export_count)
non_accessible_lus = 0;
break;
case TRANSPORT_DEVICE_DEACTIVATED:
case TRANSPORT_DEVICE_SHUTDOWN:
case TRANSPORT_DEVICE_OFFLINE_ACTIVATED:
case TRANSPORT_DEVICE_OFFLINE_DEACTIVATED:
default:
else
non_accessible_lus = 1;
break;
}
return snprintf(page, PAGE_SIZE, "%u\n", non_accessible_lus);
}
@ -281,12 +214,8 @@ DEV_STAT_SCSI_TGT_DEV_ATTR_RO(non_access_lus);
static ssize_t target_stat_scsi_tgt_dev_show_attr_resets(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
return snprintf(page, PAGE_SIZE, "%u\n", dev->num_resets);
}
@ -335,13 +264,9 @@ static struct target_stat_scsi_lu_attribute target_stat_scsi_lu_##_name = \
static ssize_t target_stat_scsi_lu_show_attr_inst(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_hba *hba = se_subdev->se_dev_hba;
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
struct se_hba *hba = dev->se_hba;
return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
}
@ -350,12 +275,8 @@ DEV_STAT_SCSI_LU_ATTR_RO(inst);
static ssize_t target_stat_scsi_lu_show_attr_dev(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
return snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
}
@ -364,13 +285,6 @@ DEV_STAT_SCSI_LU_ATTR_RO(dev);
static ssize_t target_stat_scsi_lu_show_attr_indx(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
return snprintf(page, PAGE_SIZE, "%u\n", SCSI_LU_INDEX);
}
DEV_STAT_SCSI_LU_ATTR_RO(indx);
@ -378,12 +292,6 @@ DEV_STAT_SCSI_LU_ATTR_RO(indx);
static ssize_t target_stat_scsi_lu_show_attr_lun(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
/* FIXME: scsiLuDefaultLun */
return snprintf(page, PAGE_SIZE, "%llu\n", (unsigned long long)0);
}
@ -392,35 +300,28 @@ DEV_STAT_SCSI_LU_ATTR_RO(lun);
static ssize_t target_stat_scsi_lu_show_attr_lu_name(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
if (!dev)
return -ENODEV;
/* scsiLuWwnName */
return snprintf(page, PAGE_SIZE, "%s\n",
(strlen(dev->se_sub_dev->t10_wwn.unit_serial)) ?
dev->se_sub_dev->t10_wwn.unit_serial : "None");
(strlen(dev->t10_wwn.unit_serial)) ?
dev->t10_wwn.unit_serial : "None");
}
DEV_STAT_SCSI_LU_ATTR_RO(lu_name);
static ssize_t target_stat_scsi_lu_show_attr_vend(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
int i;
char str[sizeof(dev->se_sub_dev->t10_wwn.vendor)+1];
if (!dev)
return -ENODEV;
char str[sizeof(dev->t10_wwn.vendor)+1];
/* scsiLuVendorId */
for (i = 0; i < sizeof(dev->se_sub_dev->t10_wwn.vendor); i++)
str[i] = ISPRINT(dev->se_sub_dev->t10_wwn.vendor[i]) ?
dev->se_sub_dev->t10_wwn.vendor[i] : ' ';
for (i = 0; i < sizeof(dev->t10_wwn.vendor); i++)
str[i] = ISPRINT(dev->t10_wwn.vendor[i]) ?
dev->t10_wwn.vendor[i] : ' ';
str[i] = '\0';
return snprintf(page, PAGE_SIZE, "%s\n", str);
}
@ -429,19 +330,15 @@ DEV_STAT_SCSI_LU_ATTR_RO(vend);
static ssize_t target_stat_scsi_lu_show_attr_prod(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
int i;
char str[sizeof(dev->se_sub_dev->t10_wwn.model)+1];
if (!dev)
return -ENODEV;
char str[sizeof(dev->t10_wwn.model)+1];
/* scsiLuProductId */
for (i = 0; i < sizeof(dev->se_sub_dev->t10_wwn.vendor); i++)
str[i] = ISPRINT(dev->se_sub_dev->t10_wwn.model[i]) ?
dev->se_sub_dev->t10_wwn.model[i] : ' ';
for (i = 0; i < sizeof(dev->t10_wwn.vendor); i++)
str[i] = ISPRINT(dev->t10_wwn.model[i]) ?
dev->t10_wwn.model[i] : ' ';
str[i] = '\0';
return snprintf(page, PAGE_SIZE, "%s\n", str);
}
@ -450,19 +347,15 @@ DEV_STAT_SCSI_LU_ATTR_RO(prod);
static ssize_t target_stat_scsi_lu_show_attr_rev(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
int i;
char str[sizeof(dev->se_sub_dev->t10_wwn.revision)+1];
if (!dev)
return -ENODEV;
char str[sizeof(dev->t10_wwn.revision)+1];
/* scsiLuRevisionId */
for (i = 0; i < sizeof(dev->se_sub_dev->t10_wwn.revision); i++)
str[i] = ISPRINT(dev->se_sub_dev->t10_wwn.revision[i]) ?
dev->se_sub_dev->t10_wwn.revision[i] : ' ';
for (i = 0; i < sizeof(dev->t10_wwn.revision); i++)
str[i] = ISPRINT(dev->t10_wwn.revision[i]) ?
dev->t10_wwn.revision[i] : ' ';
str[i] = '\0';
return snprintf(page, PAGE_SIZE, "%s\n", str);
}
@ -471,12 +364,8 @@ DEV_STAT_SCSI_LU_ATTR_RO(rev);
static ssize_t target_stat_scsi_lu_show_attr_dev_type(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
/* scsiLuPeripheralType */
return snprintf(page, PAGE_SIZE, "%u\n",
@ -487,30 +376,18 @@ DEV_STAT_SCSI_LU_ATTR_RO(dev_type);
static ssize_t target_stat_scsi_lu_show_attr_status(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
/* scsiLuStatus */
return snprintf(page, PAGE_SIZE, "%s\n",
(dev->dev_status == TRANSPORT_DEVICE_ACTIVATED) ?
"available" : "notavailable");
(dev->export_count) ? "available" : "notavailable");
}
DEV_STAT_SCSI_LU_ATTR_RO(status);
static ssize_t target_stat_scsi_lu_show_attr_state_bit(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
/* scsiLuState */
return snprintf(page, PAGE_SIZE, "exposed\n");
}
@ -519,12 +396,8 @@ DEV_STAT_SCSI_LU_ATTR_RO(state_bit);
static ssize_t target_stat_scsi_lu_show_attr_num_cmds(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
/* scsiLuNumCommands */
return snprintf(page, PAGE_SIZE, "%llu\n",
@ -535,12 +408,8 @@ DEV_STAT_SCSI_LU_ATTR_RO(num_cmds);
static ssize_t target_stat_scsi_lu_show_attr_read_mbytes(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
/* scsiLuReadMegaBytes */
return snprintf(page, PAGE_SIZE, "%u\n", (u32)(dev->read_bytes >> 20));
@ -550,12 +419,8 @@ DEV_STAT_SCSI_LU_ATTR_RO(read_mbytes);
static ssize_t target_stat_scsi_lu_show_attr_write_mbytes(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
/* scsiLuWrittenMegaBytes */
return snprintf(page, PAGE_SIZE, "%u\n", (u32)(dev->write_bytes >> 20));
@ -565,12 +430,8 @@ DEV_STAT_SCSI_LU_ATTR_RO(write_mbytes);
static ssize_t target_stat_scsi_lu_show_attr_resets(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
/* scsiLuInResets */
return snprintf(page, PAGE_SIZE, "%u\n", dev->num_resets);
@ -580,13 +441,6 @@ DEV_STAT_SCSI_LU_ATTR_RO(resets);
static ssize_t target_stat_scsi_lu_show_attr_full_stat(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
/* FIXME: scsiLuOutTaskSetFullStatus */
return snprintf(page, PAGE_SIZE, "%u\n", 0);
}
@ -595,13 +449,6 @@ DEV_STAT_SCSI_LU_ATTR_RO(full_stat);
static ssize_t target_stat_scsi_lu_show_attr_hs_num_cmds(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
/* FIXME: scsiLuHSInCommands */
return snprintf(page, PAGE_SIZE, "%u\n", 0);
}
@ -610,12 +457,8 @@ DEV_STAT_SCSI_LU_ATTR_RO(hs_num_cmds);
static ssize_t target_stat_scsi_lu_show_attr_creation_time(
struct se_dev_stat_grps *sgrps, char *page)
{
struct se_subsystem_dev *se_subdev = container_of(sgrps,
struct se_subsystem_dev, dev_stat_grps);
struct se_device *dev = se_subdev->se_dev_ptr;
if (!dev)
return -ENODEV;
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
/* scsiLuCreationTime */
return snprintf(page, PAGE_SIZE, "%u\n", (u32)(((u32)dev->creation_time -
@ -662,20 +505,20 @@ static struct config_item_type target_stat_scsi_lu_cit = {
* Called from target_core_configfs.c:target_core_make_subdev() to setup
* the target statistics groups + configfs CITs located in target_core_stat.c
*/
void target_stat_setup_dev_default_groups(struct se_subsystem_dev *se_subdev)
void target_stat_setup_dev_default_groups(struct se_device *dev)
{
struct config_group *dev_stat_grp = &se_subdev->dev_stat_grps.stat_group;
struct config_group *dev_stat_grp = &dev->dev_stat_grps.stat_group;
config_group_init_type_name(&se_subdev->dev_stat_grps.scsi_dev_group,
config_group_init_type_name(&dev->dev_stat_grps.scsi_dev_group,
"scsi_dev", &target_stat_scsi_dev_cit);
config_group_init_type_name(&se_subdev->dev_stat_grps.scsi_tgt_dev_group,
config_group_init_type_name(&dev->dev_stat_grps.scsi_tgt_dev_group,
"scsi_tgt_dev", &target_stat_scsi_tgt_dev_cit);
config_group_init_type_name(&se_subdev->dev_stat_grps.scsi_lu_group,
config_group_init_type_name(&dev->dev_stat_grps.scsi_lu_group,
"scsi_lu", &target_stat_scsi_lu_cit);
dev_stat_grp->default_groups[0] = &se_subdev->dev_stat_grps.scsi_dev_group;
dev_stat_grp->default_groups[1] = &se_subdev->dev_stat_grps.scsi_tgt_dev_group;
dev_stat_grp->default_groups[2] = &se_subdev->dev_stat_grps.scsi_lu_group;
dev_stat_grp->default_groups[0] = &dev->dev_stat_grps.scsi_dev_group;
dev_stat_grp->default_groups[1] = &dev->dev_stat_grps.scsi_tgt_dev_group;
dev_stat_grp->default_groups[2] = &dev->dev_stat_grps.scsi_lu_group;
dev_stat_grp->default_groups[3] = NULL;
}
@ -1161,7 +1004,7 @@ static ssize_t target_stat_scsi_transport_show_attr_dev_name(
return -ENODEV;
}
tpg = sep->sep_tpg;
wwn = &dev->se_sub_dev->t10_wwn;
wwn = &dev->t10_wwn;
/* scsiTransportDevName */
ret = snprintf(page, PAGE_SIZE, "%s+%s\n",
tpg->se_tpg_tfo->tpg_get_wwn(tpg),

6
drivers/target/target_core_tmr.c
View file

@ -371,7 +371,7 @@ int core_tmr_lun_reset(
* which the command was received shall be completed with TASK ABORTED
* status (see SAM-4).
*/
tas = dev->se_sub_dev->se_dev_attrib.emulate_tas;
tas = dev->dev_attrib.emulate_tas;
/*
* Determine if this se_tmr is coming from a $FABRIC_MOD
* or struct se_device passthrough..
@ -399,10 +399,10 @@ int core_tmr_lun_reset(
* LOGICAL UNIT RESET
*/
if (!preempt_and_abort_list &&
(dev->dev_flags & DF_SPC2_RESERVATIONS)) {
(dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)) {
spin_lock(&dev->dev_reservation_lock);
dev->dev_reserved_node_acl = NULL;
dev->dev_flags &= ~DF_SPC2_RESERVATIONS;
dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS;
spin_unlock(&dev->dev_reservation_lock);
pr_debug("LUN_RESET: SCSI-2 Released reservation\n");
}

217
drivers/target/target_core_transport.c
View file

@ -659,7 +659,7 @@ static void target_add_to_state_list(struct se_cmd *cmd)
static void transport_write_pending_qf(struct se_cmd *cmd);
static void transport_complete_qf(struct se_cmd *cmd);
static void target_qf_do_work(struct work_struct *work)
void target_qf_do_work(struct work_struct *work)
{
struct se_device *dev = container_of(work, struct se_device,
qf_work_queue);
@ -712,29 +712,15 @@ void transport_dump_dev_state(
int *bl)
{
*bl += sprintf(b + *bl, "Status: ");
switch (dev->dev_status) {
case TRANSPORT_DEVICE_ACTIVATED:
if (dev->export_count)
*bl += sprintf(b + *bl, "ACTIVATED");
break;
case TRANSPORT_DEVICE_DEACTIVATED:
else
*bl += sprintf(b + *bl, "DEACTIVATED");
break;
case TRANSPORT_DEVICE_SHUTDOWN:
*bl += sprintf(b + *bl, "SHUTDOWN");
break;
case TRANSPORT_DEVICE_OFFLINE_ACTIVATED:
case TRANSPORT_DEVICE_OFFLINE_DEACTIVATED:
*bl += sprintf(b + *bl, "OFFLINE");
break;
default:
*bl += sprintf(b + *bl, "UNKNOWN=%d", dev->dev_status);
break;
}
*bl += sprintf(b + *bl, " Max Queue Depth: %d", dev->queue_depth);
*bl += sprintf(b + *bl, " SectorSize: %u HwMaxSectors: %u\n",
dev->se_sub_dev->se_dev_attrib.block_size,
dev->se_sub_dev->se_dev_attrib.hw_max_sectors);
dev->dev_attrib.block_size,
dev->dev_attrib.hw_max_sectors);
*bl += sprintf(b + *bl, " ");
}
@ -991,185 +977,6 @@ transport_set_vpd_ident(struct t10_vpd *vpd, unsigned char *page_83)
}
EXPORT_SYMBOL(transport_set_vpd_ident);
static void core_setup_task_attr_emulation(struct se_device *dev)
{
/*
* If this device is from Target_Core_Mod/pSCSI, disable the
* SAM Task Attribute emulation.
*
* This is currently not available in upsream Linux/SCSI Target
* mode code, and is assumed to be disabled while using TCM/pSCSI.
*/
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
dev->dev_task_attr_type = SAM_TASK_ATTR_PASSTHROUGH;
return;
}
dev->dev_task_attr_type = SAM_TASK_ATTR_EMULATED;
pr_debug("%s: Using SAM_TASK_ATTR_EMULATED for SPC: 0x%02x"
" device\n", dev->transport->name,
dev->transport->get_device_rev(dev));
}
static void scsi_dump_inquiry(struct se_device *dev)
{
struct t10_wwn *wwn = &dev->se_sub_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\n", 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\n", 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\n", buf);
device_type = dev->transport->get_device_type(dev);
pr_debug(" Type: %s ", scsi_device_type(device_type));
pr_debug(" ANSI SCSI revision: %02x\n",
dev->transport->get_device_rev(dev));
}
struct se_device *transport_add_device_to_core_hba(
struct se_hba *hba,
struct se_subsystem_api *transport,
struct se_subsystem_dev *se_dev,
u32 device_flags,
void *transport_dev,
struct se_dev_limits *dev_limits,
const char *inquiry_prod,
const char *inquiry_rev)
{
int force_pt;
struct se_device *dev;
dev = kzalloc(sizeof(struct se_device), GFP_KERNEL);
if (!dev) {
pr_err("Unable to allocate memory for se_dev_t\n");
return NULL;
}
dev->dev_flags = device_flags;
dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED;
dev->dev_ptr = transport_dev;
dev->se_hba = hba;
dev->se_sub_dev = se_dev;
dev->transport = transport;
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);
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->dev_status_lock);
spin_lock_init(&dev->se_port_lock);
spin_lock_init(&dev->se_tmr_lock);
spin_lock_init(&dev->qf_cmd_lock);
atomic_set(&dev->dev_ordered_id, 0);
se_dev_set_default_attribs(dev, dev_limits);
dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX);
dev->creation_time = get_jiffies_64();
spin_lock_init(&dev->stats_lock);
spin_lock(&hba->device_lock);
list_add_tail(&dev->dev_list, &hba->hba_dev_list);
hba->dev_count++;
spin_unlock(&hba->device_lock);
/*
* Setup the SAM Task Attribute emulation for struct se_device
*/
core_setup_task_attr_emulation(dev);
/*
* Force PR and ALUA passthrough emulation with internal object use.
*/
force_pt = (hba->hba_flags & HBA_FLAGS_INTERNAL_USE);
/*
* Setup the Reservations infrastructure for struct se_device
*/
core_setup_reservations(dev, force_pt);
/*
* Setup the Asymmetric Logical Unit Assignment for struct se_device
*/
if (core_setup_alua(dev, force_pt) < 0)
goto err_dev_list;
/*
* 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\n",
dev->transport->name);
goto err_dev_list;
}
/*
* 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.
* This is required so that transport_get_inquiry() copies these
* originals once back into DEV_T10_WWN(dev) for the virtual device
* setup.
*/
if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV) {
if (!inquiry_prod || !inquiry_rev) {
pr_err("All non TCM/pSCSI plugins require"
" INQUIRY consts\n");
goto err_wq;
}
strncpy(&dev->se_sub_dev->t10_wwn.vendor[0], "LIO-ORG", 8);
strncpy(&dev->se_sub_dev->t10_wwn.model[0], inquiry_prod, 16);
strncpy(&dev->se_sub_dev->t10_wwn.revision[0], inquiry_rev, 4);
}
scsi_dump_inquiry(dev);
return dev;
err_wq:
destroy_workqueue(dev->tmr_wq);
err_dev_list:
spin_lock(&hba->device_lock);
list_del(&dev->dev_list);
hba->dev_count--;
spin_unlock(&hba->device_lock);
se_release_vpd_for_dev(dev);
kfree(dev);
return NULL;
}
EXPORT_SYMBOL(transport_add_device_to_core_hba);
int target_cmd_size_check(struct se_cmd *cmd, unsigned int size)
{
struct se_device *dev = cmd->se_dev;
@ -1191,7 +998,7 @@ int target_cmd_size_check(struct se_cmd *cmd, unsigned int size)
* Reject READ_* or WRITE_* with overflow/underflow for
* type SCF_SCSI_DATA_CDB.
*/
if (dev->se_sub_dev->se_dev_attrib.block_size != 512) {
if (dev->dev_attrib.block_size != 512) {
pr_err("Failing OVERFLOW/UNDERFLOW for LBA op"
" CDB on non 512-byte sector setup subsystem"
" plugin: %s\n", dev->transport->name);
@ -1293,7 +1100,7 @@ int target_setup_cmd_from_cdb(
struct se_cmd *cmd,
unsigned char *cdb)
{
struct se_subsystem_dev *su_dev = cmd->se_dev->se_sub_dev;
struct se_device *dev = cmd->se_dev;
u32 pr_reg_type = 0;
u8 alua_ascq = 0;
unsigned long flags;
@ -1345,7 +1152,7 @@ int target_setup_cmd_from_cdb(
return -EINVAL;
}
ret = su_dev->t10_alua.alua_state_check(cmd, cdb, &alua_ascq);
ret = dev->t10_alua.alua_state_check(cmd, cdb, &alua_ascq);
if (ret != 0) {
/*
* Set SCSI additional sense code (ASC) to 'LUN Not Accessible';
@ -1371,8 +1178,8 @@ int target_setup_cmd_from_cdb(
/*
* Check status for SPC-3 Persistent Reservations
*/
if (su_dev->t10_pr.pr_ops.t10_reservation_check(cmd, &pr_reg_type)) {
if (su_dev->t10_pr.pr_ops.t10_seq_non_holder(
if (dev->t10_pr.pr_ops.t10_reservation_check(cmd, &pr_reg_type)) {
if (dev->t10_pr.pr_ops.t10_seq_non_holder(
cmd, cdb, pr_reg_type) != 0) {
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->se_cmd_flags |= SCF_SCSI_RESERVATION_CONFLICT;
@ -1387,7 +1194,7 @@ int target_setup_cmd_from_cdb(
*/
}
ret = cmd->se_dev->transport->parse_cdb(cmd);
ret = dev->transport->parse_cdb(cmd);
if (ret < 0)
return ret;
@ -1759,7 +1566,7 @@ void transport_generic_request_failure(struct se_cmd *cmd)
* See spc4r17, section 7.4.6 Control Mode Page, Table 349
*/
if (cmd->se_sess &&
cmd->se_dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl == 2)
cmd->se_dev->dev_attrib.emulate_ua_intlck_ctrl == 2)
core_scsi3_ua_allocate(cmd->se_sess->se_node_acl,
cmd->orig_fe_lun, 0x2C,
ASCQ_2CH_PREVIOUS_RESERVATION_CONFLICT_STATUS);

6
drivers/target/target_core_ua.c
View file

@ -237,7 +237,7 @@ void core_scsi3_ua_for_check_condition(
* highest priority UNIT_ATTENTION and ASC/ASCQ without
* clearing it.
*/
if (dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl != 0) {
if (dev->dev_attrib.emulate_ua_intlck_ctrl != 0) {
*asc = ua->ua_asc;
*ascq = ua->ua_ascq;
break;
@ -265,8 +265,8 @@ void core_scsi3_ua_for_check_condition(
" INTLCK_CTRL: %d, mapped LUN: %u, got CDB: 0x%02x"
" reported ASC: 0x%02x, ASCQ: 0x%02x\n",
nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
(dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl != 0) ? "Reporting" :
"Releasing", dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl,
(dev->dev_attrib.emulate_ua_intlck_ctrl != 0) ? "Reporting" :
"Releasing", dev->dev_attrib.emulate_ua_intlck_ctrl,
cmd->orig_fe_lun, cmd->t_task_cdb[0], *asc, *ascq);
}

25
include/target/target_core_backend.h
View file

@ -9,6 +9,8 @@ struct se_subsystem_api {
struct list_head sub_api_list;
char name[16];
char inquiry_prod[16];
char inquiry_rev[4];
struct module *owner;
u8 transport_type;
@ -16,21 +18,20 @@ struct se_subsystem_api {
int (*attach_hba)(struct se_hba *, u32);
void (*detach_hba)(struct se_hba *);
int (*pmode_enable_hba)(struct se_hba *, unsigned long);
void *(*allocate_virtdevice)(struct se_hba *, const char *);
struct se_device *(*create_virtdevice)(struct se_hba *,
struct se_subsystem_dev *, void *);
void (*free_device)(void *);
struct se_device *(*alloc_device)(struct se_hba *, const char *);
int (*configure_device)(struct se_device *);
void (*free_device)(struct se_device *device);
ssize_t (*set_configfs_dev_params)(struct se_device *,
const char *, ssize_t);
ssize_t (*show_configfs_dev_params)(struct se_device *, char *);
void (*transport_complete)(struct se_cmd *cmd,
struct scatterlist *,
unsigned char *);
int (*parse_cdb)(struct se_cmd *cmd);
ssize_t (*check_configfs_dev_params)(struct se_hba *,
struct se_subsystem_dev *);
ssize_t (*set_configfs_dev_params)(struct se_hba *,
struct se_subsystem_dev *, const char *, ssize_t);
ssize_t (*show_configfs_dev_params)(struct se_hba *,
struct se_subsystem_dev *, char *);
u32 (*get_device_rev)(struct se_device *);
u32 (*get_device_type)(struct se_device *);
sector_t (*get_blocks)(struct se_device *);
@ -47,10 +48,6 @@ struct spc_ops {
int transport_subsystem_register(struct se_subsystem_api *);
void transport_subsystem_release(struct se_subsystem_api *);
struct se_device *transport_add_device_to_core_hba(struct se_hba *,
struct se_subsystem_api *, struct se_subsystem_dev *, u32,
void *, struct se_dev_limits *, const char *, const char *);
void target_complete_cmd(struct se_cmd *, u8);
int sbc_parse_cdb(struct se_cmd *cmd, struct spc_ops *ops);

104
include/target/target_core_base.h
View file

@ -62,20 +62,6 @@
#define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
/*
* struct se_subsystem_dev->su_dev_flags
*/
#define SDF_FIRMWARE_VPD_UNIT_SERIAL 0x00000001
#define SDF_EMULATED_VPD_UNIT_SERIAL 0x00000002
#define SDF_USING_UDEV_PATH 0x00000004
#define SDF_USING_ALIAS 0x00000008
/*
* struct se_device->dev_flags
*/
#define DF_SPC2_RESERVATIONS 0x00000001
#define DF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
/* struct se_dev_attrib sanity values */
/* Default max_unmap_lba_count */
#define DA_MAX_UNMAP_LBA_COUNT 0
@ -182,16 +168,6 @@ enum transport_lunflags_table {
TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
};
/* struct se_device->dev_status */
enum transport_device_status_table {
TRANSPORT_DEVICE_ACTIVATED = 0x01,
TRANSPORT_DEVICE_DEACTIVATED = 0x02,
TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
TRANSPORT_DEVICE_SHUTDOWN = 0x08,
TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
};
/*
* Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
* to signal which ASC/ASCQ sense payload should be built.
@ -246,10 +222,6 @@ enum tcm_tmrsp_table {
TMR_FUNCTION_REJECTED = 255,
};
struct se_obj {
atomic_t obj_access_count;
};
/*
* Used by TCM Core internally to signal if ALUA emulation is enabled or
* disabled, or running in with TCM/pSCSI passthrough mode
@ -288,7 +260,7 @@ struct t10_alua {
u16 alua_tg_pt_gps_counter;
u32 alua_tg_pt_gps_count;
spinlock_t tg_pt_gps_lock;
struct se_subsystem_dev *t10_sub_dev;
struct se_device *t10_dev;
/* Used for default ALUA Target Port Group */
struct t10_alua_tg_pt_gp *default_tg_pt_gp;
/* Used for default ALUA Target Port Group ConfigFS group */
@ -335,7 +307,7 @@ struct t10_alua_tg_pt_gp {
atomic_t tg_pt_gp_ref_cnt;
spinlock_t tg_pt_gp_lock;
struct mutex tg_pt_gp_md_mutex;
struct se_subsystem_dev *tg_pt_gp_su_dev;
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;
@ -366,7 +338,7 @@ struct t10_wwn {
char revision[4];
char unit_serial[INQUIRY_VPD_SERIAL_LEN];
spinlock_t t10_vpd_lock;
struct se_subsystem_dev *t10_sub_dev;
struct se_device *t10_dev;
struct config_group t10_wwn_group;
struct list_head t10_vpd_list;
};
@ -662,15 +634,6 @@ struct se_dev_entry {
struct list_head ua_list;
};
struct se_dev_limits {
/* Max supported HW queue depth */
u32 hw_queue_depth;
/* Max supported virtual queue depth */
u32 queue_depth;
/* From include/linux/blkdev.h for the other HW/SW limits. */
struct queue_limits limits;
};
struct se_dev_attrib {
int emulate_dpo;
int emulate_fua_write;
@ -696,7 +659,7 @@ struct se_dev_attrib {
u32 max_unmap_block_desc_count;
u32 unmap_granularity;
u32 unmap_granularity_alignment;
struct se_subsystem_dev *da_sub_dev;
struct se_device *da_dev;
struct config_group da_group;
};
@ -707,48 +670,24 @@ struct se_dev_stat_grps {
struct config_group scsi_lu_group;
};
struct se_subsystem_dev {
/* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
#define SE_DEV_ALIAS_LEN 512
unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
/* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
#define SE_UDEV_PATH_LEN 512
unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
u32 su_dev_flags;
struct se_hba *se_dev_hba;
struct se_device *se_dev_ptr;
struct se_dev_attrib se_dev_attrib;
/* T10 Asymmetric Logical Unit Assignment for Target Ports */
struct t10_alua t10_alua;
/* T10 Inquiry and VPD WWN Information */
struct t10_wwn t10_wwn;
/* T10 SPC-2 + SPC-3 Reservations */
struct t10_reservation t10_pr;
spinlock_t se_dev_lock;
void *se_dev_su_ptr;
struct config_group se_dev_group;
/* For T10 Reservations */
struct config_group se_dev_pr_group;
/* For target_core_stat.c groups */
struct se_dev_stat_grps dev_stat_grps;
};
struct se_device {
/* RELATIVE TARGET PORT IDENTIFER Counter */
u16 dev_rpti_counter;
/* Used for SAM Task Attribute ordering */
u32 dev_cur_ordered_id;
u32 dev_flags;
#define DF_CONFIGURED 0x00000001
#define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
#define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
#define DF_USING_UDEV_PATH 0x00000008
#define DF_USING_ALIAS 0x00000010
u32 dev_port_count;
/* See transport_device_status_table */
u32 dev_status;
/* Physical device queue depth */
u32 queue_depth;
/* Used for SPC-2 reservations enforce of ISIDs */
u64 dev_res_bin_isid;
t10_task_attr_index_t dev_task_attr_type;
/* Pointer to transport specific device structure */
void *dev_ptr;
u32 dev_index;
u64 creation_time;
u32 num_resets;
@ -761,13 +700,13 @@ struct se_device {
atomic_t dev_ordered_id;
atomic_t dev_ordered_sync;
atomic_t dev_qf_count;
struct se_obj dev_obj;
struct se_obj dev_access_obj;
struct se_obj dev_export_obj;
int export_count;
spinlock_t delayed_cmd_lock;
spinlock_t execute_task_lock;
spinlock_t dev_reservation_lock;
spinlock_t dev_status_lock;
unsigned int dev_reservation_flags;
#define DRF_SPC2_RESERVATIONS 0x00000001
#define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
spinlock_t se_port_lock;
spinlock_t se_tmr_lock;
spinlock_t qf_cmd_lock;
@ -786,7 +725,20 @@ struct se_device {
struct list_head qf_cmd_list;
/* Pointer to associated SE HBA */
struct se_hba *se_hba;
struct se_subsystem_dev *se_sub_dev;
/* T10 Inquiry and VPD WWN Information */
struct t10_wwn t10_wwn;
/* T10 Asymmetric Logical Unit Assignment for Target Ports */
struct t10_alua t10_alua;
/* T10 SPC-2 + SPC-3 Reservations */
struct t10_reservation t10_pr;
struct se_dev_attrib dev_attrib;
struct config_group dev_group;
struct config_group dev_pr_group;
struct se_dev_stat_grps dev_stat_grps;
#define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
unsigned char dev_alias[SE_DEV_ALIAS_LEN];
#define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
unsigned char udev_path[SE_UDEV_PATH_LEN];
/* Pointer to template of function pointers for transport */
struct se_subsystem_api *transport;
/* Linked list for struct se_hba struct se_device list */
@ -803,8 +755,6 @@ struct se_hba {
u32 hba_index;
/* Pointer to transport specific host structure. */
void *hba_ptr;
/* Linked list for struct se_device */
struct list_head hba_dev_list;
struct list_head hba_node;
spinlock_t device_lock;
struct config_group hba_group;