Modules

FIB Lookup

Modules

 Request

Allocation/Freeing



struct flnl_result * flnl_result_alloc (void)
void flnl_result_put (struct flnl_result *res)

Cache Management



struct nl_cache * flnl_result_alloc_cache (void)
 Allocate lookup result cache.

Lookup



int flnl_lookup_build_request (struct flnl_request *req, int flags, struct nl_msg **result)
 Builds a netlink request message to do a lookup.
int flnl_lookup (struct nl_sock *sk, struct flnl_request *req, struct nl_cache *cache)
 Perform FIB Lookup.

Attribute Access



int flnl_result_get_table_id (struct flnl_result *res)
int flnl_result_get_prefixlen (struct flnl_result *res)
int flnl_result_get_nexthop_sel (struct flnl_result *res)
int flnl_result_get_type (struct flnl_result *res)
int flnl_result_get_scope (struct flnl_result *res)
int flnl_result_get_error (struct flnl_result *res)

Function Documentation

struct nl_cache* flnl_result_alloc_cache ( void   )  [read]

Allocate lookup result cache.

Allocates a new lookup result cache and initializes it properly.

Note:
Free the memory after usage using nl_cache_destroy_and_free().
Returns:
Newly allocated cache or NULL if an error occured.

Definition at line 179 of file lookup.c.

References nl_cache_alloc().

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int flnl_lookup_build_request ( struct flnl_request *  req,
int  flags,
struct nl_msg **  result 
)

Builds a netlink request message to do a lookup.

Parameters:
req Requested match.
flags additional netlink message flags

Builds a new netlink message requesting a change of link attributes. The netlink message header isn't fully equipped with all relevant fields and must be sent out via nl_send_auto_complete() or supplemented as needed. old must point to a link currently configured in the kernel and tmpl must contain the attributes to be changed set via rtnl_link_set_* functions.

Returns:
New netlink message
Note:
Not all attributes can be changed, see Changeable Attributes for more details.

Definition at line 208 of file lookup.c.

References nl_addr_get_binary_addr(), nlmsg_alloc_simple(), nlmsg_append(), and nlmsg_free().

Referenced by flnl_lookup().

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int flnl_lookup ( struct nl_sock *  sk,
struct flnl_request *  req,
struct nl_cache *  cache 
)

Perform FIB Lookup.

Parameters:
sk Netlink socket.
req Lookup request object.
cache Cache for result.

Builds a netlink message to request a FIB lookup, waits for the reply and adds the result to the specified cache.

Returns:
0 on success or a negative error code.

Definition at line 259 of file lookup.c.

References flnl_lookup_build_request(), nl_cache_pickup(), and nlmsg_free().

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