diff options
-rw-r--r-- | net/bridge/br_input.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 35b94f9a1ac5..a260679afad8 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c | |||
@@ -112,7 +112,11 @@ static int br_handle_local_finish(struct sk_buff *skb) | |||
112 | */ | 112 | */ |
113 | static inline int is_link_local(const unsigned char *dest) | 113 | static inline int is_link_local(const unsigned char *dest) |
114 | { | 114 | { |
115 | return memcmp(dest, br_group_address, 5) == 0 && (dest[5] & 0xf0) == 0; | 115 | const u16 *a = (const u16 *) dest; |
116 | static const u16 *const b = (const u16 *const ) br_group_address; | ||
117 | static const u16 m = __constant_cpu_to_be16(0xfff0); | ||
118 | |||
119 | return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | ((a[2] ^ b[2]) & m)) == 0; | ||
116 | } | 120 | } |
117 | 121 | ||
118 | /* | 122 | /* |