[NET]: Store skb->timestamp as offset to a base timestamp

Reduces skb size by 8 bytes on 64-bit.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 5 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index 065df67b6422..d59428877078 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1282,16 +1282,19 @@ static inline int sock_intr_errno(long timeo)
 static __inline__ void
 sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb)
 {
-        struct timeval *stamp = &skb->stamp;
+        struct timeval stamp;
+
+        skb_get_timestamp(skb, &stamp);
         if (sock_flag(sk, SOCK_RCVTSTAMP)) {
                 /* Race occurred between timestamp enabling and packet
                    receiving.  Fill in the current time for now. */
-                if (stamp->tv_sec == 0)
-                        do_gettimeofday(stamp);
+                if (stamp.tv_sec == 0)
+                        do_gettimeofday(&stamp);
+                skb_set_timestamp(skb, &stamp);
                 put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP, sizeof(struct timeval),
-                         stamp);
+                         &stamp);
         } else
-                sk->sk_stamp = *stamp;
+                sk->sk_stamp = stamp;
 }
 
 /**