[SK_BUFF]: Introduce skb_reset_network_header(skb)
For the common, open coded 'skb->nh.raw = skb->data' operation, so that we can
later turn skb->nh.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.
This one touches just the most simple case, next will handle the slightly more
"complex" cases.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev.c b/net/core/dev.c
index 560560f..1b07582 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1074,7 +1074,7 @@
printk(KERN_CRIT "protocol %04x is "
"buggy, dev %s\n",
skb2->protocol, dev->name);
- skb2->nh.raw = skb2->data;
+ skb_reset_network_header(skb2);
}
skb2->h.raw = skb2->nh.raw;
@@ -1771,7 +1771,8 @@
__get_cpu_var(netdev_rx_stat).total++;
- skb->h.raw = skb->nh.raw = skb->data;
+ skb_reset_network_header(skb);
+ skb->h.raw = skb->data;
skb->mac_len = skb->nh.raw - skb->mac.raw;
pt_prev = NULL;
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 0ad3896..b4d1cdd 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -359,7 +359,8 @@
(2 * sizeof(u32)))))
return;
- skb->h.raw = skb->nh.raw = skb->data;
+ skb_reset_network_header(skb);
+ skb->h.raw = skb->data;
arp = skb->nh.arph;
if ((arp->ar_hrd != htons(ARPHRD_ETHER) &&
@@ -389,7 +390,7 @@
if (!send_skb)
return;
- send_skb->nh.raw = send_skb->data;
+ skb_reset_network_header(send_skb);
arp = (struct arphdr *) skb_put(send_skb, size);
send_skb->dev = skb->dev;
send_skb->protocol = htons(ETH_P_ARP);