[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, 4 insertions, 3 deletions

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 1beb782ac41b..72ee00f7b30c 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1217,7 +1217,7 @@ static void neigh_proxy_process(unsigned long arg)
 
         while (skb != (struct sk_buff *)&tbl->proxy_queue) {
                 struct sk_buff *back = skb;
-                long tdif = back->stamp.tv_usec - now;
+                long tdif = NEIGH_CB(back)->sched_next - now;
 
                 skb = skb->next;
                 if (tdif <= 0) {
@@ -1248,8 +1248,9 @@ void pneigh_enqueue(struct neigh_table *tbl, struct neigh_parms *p,
                 kfree_skb(skb);
                 return;
         }
-        skb->stamp.tv_sec  = LOCALLY_ENQUEUED;
-        skb->stamp.tv_usec = sched_next;
+
+        NEIGH_CB(skb)->sched_next = sched_next;
+        NEIGH_CB(skb)->flags |= LOCALLY_ENQUEUED;
 
         spin_lock(&tbl->proxy_queue.lock);
         if (del_timer(&tbl->proxy_timer)) {