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[net-next,v2,02/11] ipv4: fib: Add fib_info_hold() helper

Message ID 1479911670-4525-3-git-send-email-jiri@resnulli.us
State Changes Requested, archived
Delegated to: David Miller
Headers show

Commit Message

Jiri Pirko Nov. 23, 2016, 2:34 p.m. UTC 
From: Ido Schimmel <idosch@mellanox.com>

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>
---
 include/net/ip_fib.h | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index f390c3b..6c67b93 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -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);
 
+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)
 {
 	if (atomic_dec_and_test(&fi->fib_clntref))