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scsi: target: iscsi: Add upcast helpers

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iSCSI target is cluttered with open-coded container_of() conversions from
se_nacl to iscsi_node_acl. The code could be cleaned by introducing a
helper - to_iscsi_nacl() (similar to other helpers in target core).

While at it, make another iSCSI conversion helper consistent and rename
iscsi_tpg() helper to to_iscsi_tpg().

Link: https://lore.kernel.org/r/20220523095905.26070-2-d.bogdanov@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Dmitry Bogdanov <d.bogdanov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Dmitry Bogdanov 2022-05-23 12:59:03 +03:00 committed by Martin K. Petersen
parent 4dc48a107a
commit a11b80692b
4 changed files with 49 additions and 62 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

82
drivers/target/iscsi/iscsi_target_configfs.c
View File

@ -210,7 +210,7 @@ static struct se_tpg_np *lio_target_call_addnptotpg(
return ERR_PTR(ret);
}
tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
tpg = to_iscsi_tpg(se_tpg);
ret = iscsit_get_tpg(tpg);
if (ret < 0)
return ERR_PTR(-EINVAL);
@ -281,9 +281,7 @@ static ssize_t iscsi_nacl_attrib_##name##_show(struct config_item *item,\
char *page) \
{ \
struct se_node_acl *se_nacl = attrib_to_nacl(item); \
struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
se_node_acl); \
\
struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl); \
return sprintf(page, "%u\n", nacl->node_attrib.name); \
} \
\
@ -291,8 +289,7 @@ static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\
const char *page, size_t count) \
{ \
struct se_node_acl *se_nacl = attrib_to_nacl(item); \
struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
se_node_acl); \
struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl); \
u32 val; \
int ret; \
\
@ -377,15 +374,14 @@ static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \
char *page) \
{ \
struct se_node_acl *nacl = auth_to_nacl(item); \
return __iscsi_nacl_auth_##name##_show(container_of(nacl, \
struct iscsi_node_acl, se_node_acl), page); \
return __iscsi_nacl_auth_##name##_show(to_iscsi_nacl(nacl), page); \
} \
static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \
const char *page, size_t count) \
{ \
struct se_node_acl *nacl = auth_to_nacl(item); \
return __iscsi_nacl_auth_##name##_store(container_of(nacl, \
struct iscsi_node_acl, se_node_acl), page, count); \
return __iscsi_nacl_auth_##name##_store(to_iscsi_nacl(nacl), \
page, count); \
} \
\
CONFIGFS_ATTR(iscsi_nacl_auth_, name)
@ -417,8 +413,7 @@ static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \
char *page) \
{ \
struct se_node_acl *nacl = auth_to_nacl(item); \
return __iscsi_nacl_auth_##name##_show(container_of(nacl, \
struct iscsi_node_acl, se_node_acl), page); \
return __iscsi_nacl_auth_##name##_show(to_iscsi_nacl(nacl), page); \
} \
\
CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name)
@ -623,8 +618,7 @@ static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item,
{
struct se_node_acl *se_nacl = acl_to_nacl(item);
struct se_portal_group *se_tpg = se_nacl->se_tpg;
struct iscsi_portal_group *tpg = container_of(se_tpg,
struct iscsi_portal_group, tpg_se_tpg);
struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);
struct config_item *acl_ci, *tpg_ci, *wwn_ci;
u32 cmdsn_depth = 0;
int ret;
@ -700,8 +694,7 @@ static struct configfs_attribute *lio_target_initiator_attrs[] = {
static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
const char *name)
{
struct iscsi_node_acl *acl =
container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
struct iscsi_node_acl *acl = to_iscsi_nacl(se_nacl);
config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
"iscsi_sess_stats", &iscsi_stat_sess_cit);
@ -720,8 +713,7 @@ static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \
char *page) \
{ \
struct se_portal_group *se_tpg = attrib_to_tpg(item); \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
ssize_t rb; \
\
if (iscsit_get_tpg(tpg) < 0) \
@ -736,8 +728,7 @@ static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\
const char *page, size_t count) \
{ \
struct se_portal_group *se_tpg = attrib_to_tpg(item); \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
u32 val; \
int ret; \
\
@ -800,8 +791,7 @@ static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
char *page) \
{ \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
\
if (!capable(CAP_SYS_ADMIN)) \
@ -813,8 +803,7 @@ static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg,
static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\
const char *page, size_t count) \
{ \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
\
if (!capable(CAP_SYS_ADMIN)) \
@ -861,8 +850,7 @@ DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
char *page) \
{ \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
\
if (!capable(CAP_SYS_ADMIN)) \
@ -900,8 +888,7 @@ static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item, \
char *page) \
{ \
struct se_portal_group *se_tpg = param_to_tpg(item); \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
struct iscsi_param *param; \
ssize_t rb; \
\
@ -923,8 +910,7 @@ static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \
const char *page, size_t count) \
{ \
struct se_portal_group *se_tpg = param_to_tpg(item); \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
char *buf; \
int ret, len; \
\
@ -1073,8 +1059,7 @@ free_out:
static int lio_target_tiqn_enabletpg(struct se_portal_group *se_tpg,
bool enable)
{
struct iscsi_portal_group *tpg = container_of(se_tpg,
struct iscsi_portal_group, tpg_se_tpg);
struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);
int ret;
ret = iscsit_get_tpg(tpg);
@ -1106,7 +1091,7 @@ static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
struct iscsi_portal_group *tpg;
struct iscsi_tiqn *tiqn;
tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
tpg = to_iscsi_tpg(se_tpg);
tiqn = tpg->tpg_tiqn;
/*
* iscsit_tpg_del_portal_group() assumes force=1
@ -1416,46 +1401,41 @@ static void lio_aborted_task(struct se_cmd *se_cmd)
cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
}
static inline struct iscsi_portal_group *iscsi_tpg(struct se_portal_group *se_tpg)
{
return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
}
static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
}
static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpgt;
return to_iscsi_tpg(se_tpg)->tpgt;
}
static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
return to_iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
}
static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
return to_iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
}
static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
return to_iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
}
static int lio_tpg_check_demo_mode_write_protect(
struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
return to_iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
}
static int lio_tpg_check_prod_mode_write_protect(
struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
return to_iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
}
static int lio_tpg_check_prot_fabric_only(
@ -1465,9 +1445,9 @@ static int lio_tpg_check_prot_fabric_only(
* Only report fabric_prot_type if t10_pi has also been enabled
* for incoming ib_isert sessions.
*/
if (!iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
if (!to_iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
return 0;
return iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
return to_iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
}
/*
@ -1504,16 +1484,14 @@ static void lio_tpg_close_session(struct se_session *se_sess)
static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
}
static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
{
struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
se_node_acl);
struct iscsi_node_acl *acl = to_iscsi_nacl(se_acl);
struct se_portal_group *se_tpg = se_acl->se_tpg;
struct iscsi_portal_group *tpg = container_of(se_tpg,
struct iscsi_portal_group, tpg_se_tpg);
struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);
acl->node_attrib.nacl = acl;
iscsit_set_default_node_attribues(acl, tpg);

14
drivers/target/iscsi/iscsi_target_nego.c
View File

@ -104,8 +104,8 @@ static u32 iscsi_handle_authentication(
{
struct iscsit_session *sess = conn->sess;
struct iscsi_node_auth *auth;
struct iscsi_node_acl *iscsi_nacl;
struct iscsi_portal_group *iscsi_tpg;
struct iscsi_node_acl *nacl;
struct iscsi_portal_group *tpg;
struct se_node_acl *se_nacl;
if (!sess->sess_ops->SessionType) {
@ -120,15 +120,13 @@ static u32 iscsi_handle_authentication(
}
if (se_nacl->dynamic_node_acl) {
iscsi_tpg = container_of(se_nacl->se_tpg,
struct iscsi_portal_group, tpg_se_tpg);
tpg = to_iscsi_tpg(se_nacl->se_tpg);
auth = &iscsi_tpg->tpg_demo_auth;
auth = &tpg->tpg_demo_auth;
} else {
iscsi_nacl = container_of(se_nacl, struct iscsi_node_acl,
se_node_acl);
nacl = to_iscsi_nacl(se_nacl);
auth = &iscsi_nacl->node_auth;
auth = &nacl->node_auth;
}
} else {
/*

3
drivers/target/iscsi/iscsi_target_tpg.c
View File

@ -394,8 +394,7 @@ struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(
{
struct se_session *se_sess = sess->se_sess;
struct se_node_acl *se_nacl = se_sess->se_node_acl;
struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl,
se_node_acl);
struct iscsi_node_acl *acl = to_iscsi_nacl(se_nacl);
return &acl->node_attrib;
}

12
include/target/iscsi/iscsi_target_core.h
View File

@ -758,6 +758,12 @@ struct iscsi_node_acl {
struct iscsi_node_stat_grps node_stat_grps;
};
static inline struct iscsi_node_acl *
to_iscsi_nacl(struct se_node_acl *se_nacl)
{
return container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
}
struct iscsi_tpg_attrib {
u32 authentication;
u32 login_timeout;
@ -839,6 +845,12 @@ struct iscsi_portal_group {
struct list_head tpg_list;
} ____cacheline_aligned;
static inline struct iscsi_portal_group *
to_iscsi_tpg(struct se_portal_group *se_tpg)
{
return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
}
struct iscsi_wwn_stat_grps {
struct config_group iscsi_stat_group;
struct config_group iscsi_instance_group;