udp: constify __udp_is_mcast_sock() socket argument

This clarifies __udp_is_mcast_sock() intent.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index dc8feb54d835f0824aa6833e36db34f686c456ec..aa32afd871ee50968f7bb8152401be60dece1454 100644 (file)
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -578,12 +578,12 @@ struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,
 EXPORT_SYMBOL_GPL(udp4_lib_lookup);
 #endif
 
-static inline bool __udp_is_mcast_sock(struct net *net, struct sock *sk,
+static inline bool __udp_is_mcast_sock(struct net *net, const struct sock *sk,
                                       __be16 loc_port, __be32 loc_addr,
                                       __be16 rmt_port, __be32 rmt_addr,
                                       int dif, int sdif, unsigned short hnum)
 {
-       struct inet_sock *inet = inet_sk(sk);
+       const struct inet_sock *inet = inet_sk(sk);
 
        if (!net_eq(sock_net(sk), net) ||
            udp_sk(sk)->udp_port_hash != hnum ||