[SK_BUFF]: Introduce skb_reset_transport_header(skb)

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>

3 files changed, 4 insertions, 4 deletions

diff --git a/net/decnet/dn_nsp_in.c b/net/decnet/dn_nsp_in.c
index 9d20904f6f52..d9498a165acf 100644
--- a/net/decnet/dn_nsp_in.c
+++ b/net/decnet/dn_nsp_in.c
@@ -725,7 +725,7 @@ static int dn_nsp_rx_packet(struct sk_buff *skb)
         if (!pskb_may_pull(skb, 2))
                 goto free_out;
 
-        skb->h.raw    = skb->data;
+        skb_reset_transport_header(skb);
         cb->nsp_flags = *ptr++;
 
         if (decnet_debug_level & 2)
diff --git a/net/decnet/dn_nsp_out.c b/net/decnet/dn_nsp_out.c
index 2d2cda82c7db..84b8c5b45fef 100644
--- a/net/decnet/dn_nsp_out.c
+++ b/net/decnet/dn_nsp_out.c
@@ -79,7 +79,7 @@ static void dn_nsp_send(struct sk_buff *skb)
         struct dst_entry *dst;
         struct flowi fl;
 
-        skb->h.raw = skb->data;
+        skb_reset_transport_header(skb);
         scp->stamp = jiffies;
 
         dst = sk_dst_check(sk, 0);
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 32a7db36c9e5..bb73bf16630f 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -504,7 +504,7 @@ static int dn_route_rx_long(struct sk_buff *skb)
                 goto drop_it;
 
         skb_pull(skb, 20);
-        skb->h.raw = skb->data;
+        skb_reset_transport_header(skb);
 
         /* Destination info */
         ptr += 2;
@@ -542,7 +542,7 @@ static int dn_route_rx_short(struct sk_buff *skb)
                 goto drop_it;
 
         skb_pull(skb, 5);
-        skb->h.raw = skb->data;
+        skb_reset_transport_header(skb);
 
         cb->dst = *(__le16 *)ptr;
         ptr += 2;