[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>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/ax25/ax25_in.c b/net/ax25/ax25_in.c
index 6d11b0633d5a..3b2aac670266 100644
--- a/net/ax25/ax25_in.c
+++ b/net/ax25/ax25_in.c
@@ -61,8 +61,8 @@ static int ax25_rx_fragment(ax25_cb *ax25, struct sk_buff *skb)
                                         skb_reserve(skbn, AX25_MAX_HEADER_LEN);
 
                                         skbn->dev   = ax25->ax25_dev->dev;
+                                        skb_reset_network_header(skbn);
                                         skbn->h.raw = skbn->data;
-                                        skbn->nh.raw = skbn->data;
 
                                         /* Copy data from the fragments */
                                         while ((skbo = skb_dequeue(&ax25->frag_queue)) != NULL) {
@@ -123,7 +123,7 @@ int ax25_rx_iframe(ax25_cb *ax25, struct sk_buff *skb)
 
                 skb_pull(skb, 1);       /* Remove PID */
                 skb_reset_mac_header(skb);
-                skb->nh.raw   = skb->data;
+                skb_reset_network_header(skb);
                 skb->dev      = ax25->ax25_dev->dev;
                 skb->pkt_type = PACKET_HOST;
                 skb->protocol = htons(ETH_P_IP);
@@ -247,7 +247,7 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
                 case AX25_P_IP:
                         skb_pull(skb,2);                /* drop PID/CTRL */
                         skb->h.raw    = skb->data;
-                        skb->nh.raw   = skb->data;
+                        skb_reset_network_header(skb);
                         skb->dev      = dev;
                         skb->pkt_type = PACKET_HOST;
                         skb->protocol = htons(ETH_P_IP);
@@ -257,7 +257,7 @@ 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->nh.raw   = skb->data;
+                        skb_reset_network_header(skb);
                         skb->dev      = dev;
                         skb->pkt_type = PACKET_HOST;
                         skb->protocol = htons(ETH_P_ARP);