ipv6: ip6_route_output does not modify sk parameter, so make it const

This avoids explicit cast to avoid 'discards qualifiers'
compiler warning in a netfilter patch that i've been working on.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index 642a80b..c850e5f 100644 (file)
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -70,7 +70,7 @@ static inline struct inet_peer *rt6_get_peer(struct rt6_info *rt)
 extern void                    ip6_route_input(struct sk_buff *skb);
 
 extern struct dst_entry *      ip6_route_output(struct net *net,
-                                                struct sock *sk,
+                                                const struct sock *sk,
                                                 struct flowi6 *fl6);
 
 extern int                     ip6_route_init(void);

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 6814c87..843406f 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -854,7 +854,7 @@ static struct rt6_info *ip6_pol_route_output(struct net *net, struct fib6_table
        return ip6_pol_route(net, table, fl6->flowi6_oif, fl6, flags);
 }
 
-struct dst_entry * ip6_route_output(struct net *net, struct sock *sk,
+struct dst_entry * ip6_route_output(struct net *net, const struct sock *sk,
                                    struct flowi6 *fl6)
 {
        int flags = 0;