Caching

Collaboration diagram for Caching:

Modules
	Cache
	Manager
	Helps keeping caches up to date.

Cache Operations Sets
struct nl_cache_ops *	nl_cache_ops_lookup (const char *name)
	Lookup the set cache operations of a certain cache type. More...
struct nl_cache_ops *	nl_cache_ops_associate (int protocol, int msgtype)
	Associate a message type to a set of cache operations. More...
struct nl_msgtype *	nl_msgtype_lookup (struct nl_cache_ops *ops, int msgtype)
	Lookup message type cache association. More...
void	nl_cache_ops_foreach (void(*cb)(struct nl_cache_ops *, void *), void *arg)
	Call a function for each registered cache operation. More...
int	nl_cache_mngt_register (struct nl_cache_ops *ops)
	Register a set of cache operations. More...
int	nl_cache_mngt_unregister (struct nl_cache_ops *ops)
	Unregister a set of cache operations. More...

Global Cache Provisioning/Requiring
void	nl_cache_mngt_provide (struct nl_cache *cache)
	Provide a cache for global use. More...
void	nl_cache_mngt_unprovide (struct nl_cache *cache)
	Unprovide a cache for global use. More...
struct nl_cache *	nl_cache_mngt_require (const char *name)
	Demand the use of a global cache. More...

Detailed Description

Function Documentation

void nl_cache_mngt_provide

(

struct nl_cache *

cache

)

Provide a cache for global use.

• cache cache to provide

Offers the specified cache to be used by other modules. Only one cache per type may be shared at a time, a previsouly provided caches will be overwritten.

References BUG, nl_cache::c_ops, nl_cache_ops::co_major_cache, and nl_cache_ops::co_obj_ops.

Referenced by main(), nl_cache_mngr_add(), nl_cli_alloc_cache(), nl_cli_route_alloc_cache(), and nl_cli_rule_alloc_cache().

Here is the caller graph for this function:

int nl_cache_mngt_register

(

struct nl_cache_ops *

ops

)

Register a set of cache operations.

• ops cache operations

Called by users of caches to announce the avaibility of a certain cache type.

Returns

0 on success or a negative error code.

References nl_cache_ops::co_name, nl_cache_ops::co_next, nl_cache_ops::co_obj_ops, nl_cache_ops_lookup(), NL_DBG, NLE_EXIST, and NLE_INVAL.

Referenced by genl_register().

Here is the call graph for this function:

Here is the caller graph for this function:

struct nl_cache* nl_cache_mngt_require

(

const char *

name

)

Demand the use of a global cache.

• name name of the required object type

Trys to find a cache of the specified type for global use.

Returns

A cache provided by another subsystem of the specified type marked to be available.

References nl_cache_ops::co_major_cache, nl_cache_ops_lookup(), and NULL.

Here is the call graph for this function:

void nl_cache_mngt_unprovide

(

struct nl_cache *

cache

)

Unprovide a cache for global use.

• cache cache to unprovide

Cancels the offer to use a cache globally. The cache will no longer be returned via lookups but may still be in use.

References BUG, nl_cache::c_ops, nl_cache_ops::co_major_cache, nl_cache_ops::co_obj_ops, and NULL.

int nl_cache_mngt_unregister

(

struct nl_cache_ops *

ops

)

Unregister a set of cache operations.

• ops cache operations

Called by users of caches to announce a set of cache operations is no longer available. The specified cache operations must have been registered previously using nl_cache_mngt_register()

Returns

0 on success or a negative error code

References nl_cache_ops::co_name, nl_cache_ops::co_next, NL_DBG, NLE_NOCACHE, and NULL.

Referenced by genl_unregister().

Here is the caller graph for this function:

struct nl_cache_ops* nl_cache_ops_associate	(	int	protocol,
		int	msgtype
	)

Associate a message type to a set of cache operations.

• protocol netlink protocol
• msgtype netlink message type

Associates the specified netlink message type with a registered set of cache operations.

Returns

The cache operations or NULL if no association could be made.

References nl_cache_ops::co_msgtypes, nl_cache_ops::co_next, nl_cache_ops::co_protocol, nl_msgtype::mt_id, and NULL.

Referenced by nl_msg_dump(), and nl_msg_parse().

Here is the caller graph for this function:

void nl_cache_ops_foreach	(	void(*)(struct nl_cache_ops *, void *)	cb,
		void *	arg
	)

Call a function for each registered cache operation.

• cb Callback function to be called
• arg User specific argument.

References nl_cache_ops::co_next.

Referenced by main().

Here is the caller graph for this function:

struct nl_cache_ops* nl_cache_ops_lookup

(

const char *

name

)

Lookup the set cache operations of a certain cache type.

• name name of the cache type

Returns

The cache operations or NULL if no operations have been registered under the specified name.

References nl_cache_ops::co_name, nl_cache_ops::co_next, and NULL.

Referenced by nl_cache_alloc_name(), nl_cache_mngr_add(), nl_cache_mngt_register(), nl_cache_mngt_require(), and nl_object_alloc_name().

Here is the caller graph for this function:

struct nl_msgtype* nl_msgtype_lookup	(	struct nl_cache_ops *	ops,
		int	msgtype
	)

Lookup message type cache association.

• ops cache operations
• msgtype netlink message type

Searches for a matching message type association ing the specified cache operations.

Returns

A message type association or NULL.

References nl_cache_ops::co_msgtypes, nl_msgtype::mt_id, and NULL.