[IPV4]: INET_MATCH() annotations

INET_MATCH() and friends depend on an interesting set of kludges:
	* there's a pair of adjacent fields in struct inet_sock - __be16 dport
followed by __u16 num.  We want to search by pair, so we combine the keys into
a single 32bit value and compare with 32bit value read from &...->dport.
	* on 64bit targets we combine comparisons with pair of adjacent __be32
fields in the same way.

Make sure that we don't mix those values with anything else and that pairs
we form them from have correct types.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index caca57df0d7d..6dc07ee7702e 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -461,7 +461,7 @@ static inline struct raw6_sock *raw6_sk(const struct sock *sk)
 
 #define INET6_MATCH(__sk, __hash, __saddr, __daddr, __ports, __dif)\
         (((__sk)->sk_hash == (__hash))                          && \
-         ((*((__u32 *)&(inet_sk(__sk)->dport))) == (__ports))   && \
+         ((*((__portpair *)&(inet_sk(__sk)->dport))) == (__ports))      && \
          ((__sk)->sk_family             == AF_INET6)            && \
          ipv6_addr_equal(&inet6_sk(__sk)->daddr, (__saddr))     && \
          ipv6_addr_equal(&inet6_sk(__sk)->rcv_saddr, (__daddr)) && \