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linux-sg2042
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target: kill struct se_subsystem_dev 

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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 @@ again:
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 @@ again:
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 */

514
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 @@ done:
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 @@ out:
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");

136
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,
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 @@ out:
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 @@ out_free_hba:
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);

179
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) {
out_free_bioset:
bioset_free(ib_dev->ibd_bio_set);
ib_dev->ibd_bio_set = NULL;
}
ib_dev->ibd_bd = NULL;
return ERR_PTR(ret);
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 @@ err:
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,
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 @@ out:
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 @@ out:
*/
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 @@ err:
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 */

268
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 @@ out:
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.
*/
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 @@ out:
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 @@ fail:
*/
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 @@ out:
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 @@ check_t10_vend_desc:
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 @@ check_t10_vend_desc:
* 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;