tcp: cookie_v4_init_sequence: skb should be const

Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 06a3023080c0..39e47c4e4f19 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -493,10 +493,11 @@ static inline u32 tcp_cookie_time(void)
 
 u32 __cookie_v4_init_sequence(const struct iphdr *iph, const struct tcphdr *th,
                               u16 *mssp);
-__u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mss);
+__u32 cookie_v4_init_sequence(struct sock *sk, const struct sk_buff *skb,
+                              __u16 *mss);
 #else
 static inline __u32 cookie_v4_init_sequence(struct sock *sk,
-                                            struct sk_buff *skb,
+                                            const struct sk_buff *skb,
                                             __u16 *mss)
 {
         return 0;