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[SK_BUFF]: Introduce skb_reset_transport_header(skb)

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For the common, open coded 'skb->h.raw = skb->data' operation, so that we can
later turn skb->h.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 cases:

skb->h.raw = skb->data;
skb->h.raw = {skb_push|[__]skb_pull}()

The next ones 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
2007-03-13 13:06:52 -03:00
committed by David S. Miller
parent 0660e03f6b
commit badff6d01a
49 changed files with 82 additions and 73 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
net/ax25/af_ax25.c
View File

@@ -1631,8 +1631,8 @@ static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock,
if (!ax25_sk(sk)->pidincl)
skb_pull(skb, 1); /* Remove PID */
skb->h.raw = skb->data;
copied = skb->len;
skb_reset_transport_header(skb);
copied = skb->len;
if (copied > size) {
copied = size;

8
net/ax25/ax25_in.c
View File

@@ -62,7 +62,7 @@ static int ax25_rx_fragment(ax25_cb *ax25, struct sk_buff *skb)
skbn->dev = ax25->ax25_dev->dev;
skb_reset_network_header(skbn);
skbn->h.raw = skbn->data;
skb_reset_transport_header(skbn);
/* Copy data from the fragments */
while ((skbo = skb_dequeue(&ax25->frag_queue)) != NULL) {
@@ -196,7 +196,7 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
* Process the AX.25/LAPB frame.
*/
skb->h.raw = skb->data;
skb_reset_transport_header(skb);
if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL) {
kfree_skb(skb);
@@ -246,7 +246,7 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
switch (skb->data[1]) {
case AX25_P_IP:
skb_pull(skb,2); /* drop PID/CTRL */
skb->h.raw = skb->data;
skb_reset_transport_header(skb);
skb_reset_network_header(skb);
skb->dev = dev;
skb->pkt_type = PACKET_HOST;
@@ -256,7 +256,7 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
case AX25_P_ARP:
skb_pull(skb,2);
skb->h.raw = skb->data;
skb_reset_transport_header(skb);
skb_reset_network_header(skb);
skb->dev = dev;
skb->pkt_type = PACKET_HOST;