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[IPV4] fib_hash: fix duplicated route issue
[firefly-linux-kernel-4.4.55.git]
/
net
/
ipv4
/
fib_hash.c
diff --git
a/net/ipv4/fib_hash.c
b/net/ipv4/fib_hash.c
index 527a6e0af5b60eb48b9e15459e8877db10c29db8..99071d79c5e75f4ef411154b16e8776297d2b257 100644
(file)
--- a/
net/ipv4/fib_hash.c
+++ b/
net/ipv4/fib_hash.c
@@
-444,6
+444,9
@@
static int fn_hash_insert(struct fib_table *tb, struct fib_config *cfg)
struct fib_info *fi_drop;
u8 state;
+ if (fi->fib_treeref > 1)
+ goto out;
+
write_lock_bh(&fib_hash_lock);
fi_drop = fa->fa_info;
fa->fa_info = fi;