[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/ipv4/arp.c b/net/ipv4/arp.c
index 6eb9c549d643..8bf312bdea13 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -865,7 +865,7 @@ static int arp_process(struct sk_buff *skb)
                                 if (n)
                                         neigh_release(n);
 
-                                if (skb->stamp.tv_sec == LOCALLY_ENQUEUED || 
+                                if (NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED || 
                                     skb->pkt_type == PACKET_HOST ||
                                     in_dev->arp_parms->proxy_delay == 0) {
                                         arp_send(ARPOP_REPLY,ETH_P_ARP,sip,dev,tip,sha,dev->dev_addr,sha);
@@ -948,6 +948,8 @@ int arp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
         if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
                 goto out_of_mem;
 
+        memset(NEIGH_CB(skb), 0, sizeof(struct neighbour_cb));
+
         return NF_HOOK(NF_ARP, NF_ARP_IN, skb, dev, NULL, arp_process);
 
 freeskb: