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ipv4: fib: Add fib_info_hold() helper

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As explained in the previous commit, modules are going to need to take a
reference on fib info and then drop it using fib_info_put().

Add the fib_info_hold() helper to make the code more readable and also
symmetric with fib_info_put().

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Suggested-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2016-12-03 16:44:59 +01:00 committed by David S. Miller
parent b423cb1080
commit 1c677b3d28
1 changed files with 5 additions and 0 deletions
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5
include/net/ip_fib.h
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@ -397,6 +397,11 @@ static inline void fib_combine_itag(u32 *itag, const struct fib_result *res)
void free_fib_info(struct fib_info *fi); void free_fib_info(struct fib_info *fi);
static inline void fib_info_hold(struct fib_info *fi)
{
atomic_inc(&fi->fib_clntref);
}
static inline void fib_info_put(struct fib_info *fi) static inline void fib_info_put(struct fib_info *fi)
{ {
if (atomic_dec_and_test(&fi->fib_clntref)) if (atomic_dec_and_test(&fi->fib_clntref))