[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, 3 insertions, 1 deletions

diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 7ae72d4c9bd2..a7eae30f4554 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -812,7 +812,7 @@ static void ndisc_recv_ns(struct sk_buff *skb)
                 if (ipv6_chk_acast_addr(dev, &msg->target) ||
                     (idev->cnf.forwarding && 
                      pneigh_lookup(&nd_tbl, &msg->target, dev, 0))) {
-                        if (skb->stamp.tv_sec != LOCALLY_ENQUEUED &&
+                        if (!(NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED) &&
                             skb->pkt_type != PACKET_HOST &&
                             inc != 0 &&
                             idev->nd_parms->proxy_delay != 0) {
@@ -1487,6 +1487,8 @@ int ndisc_rcv(struct sk_buff *skb)
                 return 0;
         }
 
+        memset(NEIGH_CB(skb), 0, sizeof(struct neighbour_cb));
+
         switch (msg->icmph.icmp6_type) {
         case NDISC_NEIGHBOUR_SOLICITATION:
                 ndisc_recv_ns(skb);