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authorChristoph Hellwig <hch@lst.de>2015-04-08 21:01:35 +0300
committerNicholas Bellinger <nab@linux-iscsi.org>2015-04-14 22:28:41 +0300
commit9ac8928e6a3e1ed02e632e45aa766129fe6b1802 (patch)
treeea516680cc5f811df862966bb43cfbe3e34dfb26 /include/target
parent2c336e3a2e1728d9b3116422655832184dc7046c (diff)
downloadlinux-9ac8928e6a3e1ed02e632e45aa766129fe6b1802.tar.xz
target: simplify the target template registration API
Instead of calling target_fabric_configfs_init() + target_fabric_configfs_register() / target_fabric_configfs_deregister() target_fabric_configfs_free() from every target driver, rewrite the API so that we have simple register/unregister functions that operate on a const operations vector. This patch also fixes a memory leak in several target drivers. Several target drivers namely called target_fabric_configfs_deregister() without calling target_fabric_configfs_free(). A large part of this patch is based on earlier changes from Bart Van Assche <bart.vanassche@sandisk.com>. (v2: Add a new TF_CIT_SETUP_DRV macro so that the core configfs code can declare attributes as either core only or for drivers) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target')
-rw-r--r--include/target/target_core_base.h4
-rw-r--r--include/target/target_core_configfs.h6
-rw-r--r--include/target/target_core_fabric.h24
3 files changed, 23 insertions, 11 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 71699cf3cc71..383110d608a0 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -519,7 +519,7 @@ struct se_cmd {
struct list_head se_cmd_list;
struct completion cmd_wait_comp;
struct kref cmd_kref;
- struct target_core_fabric_ops *se_tfo;
+ const struct target_core_fabric_ops *se_tfo;
sense_reason_t (*execute_cmd)(struct se_cmd *);
sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *,
u32, enum dma_data_direction);
@@ -890,7 +890,7 @@ struct se_portal_group {
/* List of TCM sessions associated wth this TPG */
struct list_head tpg_sess_list;
/* Pointer to $FABRIC_MOD dependent code */
- struct target_core_fabric_ops *se_tpg_tfo;
+ const struct target_core_fabric_ops *se_tpg_tfo;
struct se_wwn *se_tpg_wwn;
struct config_group tpg_group;
struct config_group *tpg_default_groups[7];
diff --git a/include/target/target_core_configfs.h b/include/target/target_core_configfs.h
index e0801386e4dc..25bb04c4209e 100644
--- a/include/target/target_core_configfs.h
+++ b/include/target/target_core_configfs.h
@@ -5,12 +5,6 @@
#define TARGET_CORE_NAME_MAX_LEN 64
#define TARGET_FABRIC_NAME_SIZE 32
-extern struct target_fabric_configfs *target_fabric_configfs_init(
- struct module *, const char *);
-extern void target_fabric_configfs_free(struct target_fabric_configfs *);
-extern int target_fabric_configfs_register(struct target_fabric_configfs *);
-extern void target_fabric_configfs_deregister(struct target_fabric_configfs *);
-
struct target_fabric_configfs_template {
struct config_item_type tfc_discovery_cit;
struct config_item_type tfc_wwn_cit;
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
index c93cfdf0d8e5..17c7f5ac7ea0 100644
--- a/include/target/target_core_fabric.h
+++ b/include/target/target_core_fabric.h
@@ -2,6 +2,8 @@
#define TARGET_CORE_FABRIC_H
struct target_core_fabric_ops {
+ struct module *module;
+ const char *name;
struct configfs_subsystem *tf_subsys;
char *(*get_fabric_name)(void);
u8 (*get_fabric_proto_ident)(struct se_portal_group *);
@@ -90,8 +92,23 @@ struct target_core_fabric_ops {
struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *,
struct config_group *, const char *);
void (*fabric_drop_nodeacl)(struct se_node_acl *);
+
+ struct configfs_attribute **tfc_discovery_attrs;
+ struct configfs_attribute **tfc_wwn_attrs;
+ struct configfs_attribute **tfc_tpg_base_attrs;
+ struct configfs_attribute **tfc_tpg_np_base_attrs;
+ struct configfs_attribute **tfc_tpg_attrib_attrs;
+ struct configfs_attribute **tfc_tpg_auth_attrs;
+ struct configfs_attribute **tfc_tpg_param_attrs;
+ struct configfs_attribute **tfc_tpg_nacl_base_attrs;
+ struct configfs_attribute **tfc_tpg_nacl_attrib_attrs;
+ struct configfs_attribute **tfc_tpg_nacl_auth_attrs;
+ struct configfs_attribute **tfc_tpg_nacl_param_attrs;
};
+int target_register_template(const struct target_core_fabric_ops *fo);
+void target_unregister_template(const struct target_core_fabric_ops *fo);
+
struct se_session *transport_init_session(enum target_prot_op);
int transport_alloc_session_tags(struct se_session *, unsigned int,
unsigned int);
@@ -110,7 +127,8 @@ void transport_deregister_session_configfs(struct se_session *);
void transport_deregister_session(struct se_session *);
-void transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *,
+void transport_init_se_cmd(struct se_cmd *,
+ const struct target_core_fabric_ops *,
struct se_session *, u32, int, int, unsigned char *);
sense_reason_t transport_lookup_cmd_lun(struct se_cmd *, u32);
sense_reason_t target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *);
@@ -162,8 +180,8 @@ int core_tpg_set_initiator_node_queue_depth(struct se_portal_group *,
unsigned char *, u32, int);
int core_tpg_set_initiator_node_tag(struct se_portal_group *,
struct se_node_acl *, const char *);
-int core_tpg_register(struct target_core_fabric_ops *, struct se_wwn *,
- struct se_portal_group *, void *, int);
+int core_tpg_register(const struct target_core_fabric_ops *,
+ struct se_wwn *, struct se_portal_group *, void *, int);
int core_tpg_deregister(struct se_portal_group *);
/* SAS helpers */