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[SK_BUFF]: Introduce skb_reset_mac_header(skb)

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For the common, open coded 'skb->mac.raw = skb->data' operation, so that we can
later turn skb->mac.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>
This commit is contained in:
Arnaldo Carvalho de Melo
2007-03-19 15:30:44 -07:00
committed by David S. Miller
parent 4c13eb6657
commit 459a98ed88
85 changed files with 121 additions and 111 deletions
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drivers/net/tun.c
+1 -1
View File
@@ -256,7 +256,7 @@ static __inline__ ssize_t tun_get_user(struct tun_struct *tun, struct iovec *iv,
switch (tun->flags & TUN_TYPE_MASK) {
case TUN_TUN_DEV:
skb->mac.raw = skb->data;
skb_reset_mac_header(skb);
skb->protocol = pi.proto;
skb->dev = tun->dev;
break;