[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, 5 insertions, 5 deletions

diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index a54e7ef2568a..8d0f30a015df 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -878,7 +878,7 @@ int nr_rx_frame(struct sk_buff *skb, struct net_device *dev)
         if (frametype == NR_PROTOEXT &&
             circuit_index == NR_PROTO_IP && circuit_id == NR_PROTO_IP) {
                 skb_pull(skb, NR_NETWORK_LEN + NR_TRANSPORT_LEN);
-                skb->h.raw = skb->data;
+                skb_reset_transport_header(skb);
 
                 return nr_rx_ip(skb, dev);
         }
@@ -904,7 +904,7 @@ int nr_rx_frame(struct sk_buff *skb, struct net_device *dev)
         }
 
         if (sk != NULL) {
-                skb->h.raw = skb->data;
+                skb_reset_transport_header(skb);
 
                 if (frametype == NR_CONNACK && skb->len == 22)
                         nr_sk(sk)->bpqext = 1;
@@ -1149,7 +1149,7 @@ static int nr_recvmsg(struct kiocb *iocb, struct socket *sock,
                 return er;
         }
 
-        skb->h.raw = skb->data;
+        skb_reset_transport_header(skb);
         copied     = skb->len;
 
         if (copied > size) {
diff --git a/net/netrom/nr_in.c b/net/netrom/nr_in.c
index 5560acbaaa95..e6dc749e14be 100644
--- a/net/netrom/nr_in.c
+++ b/net/netrom/nr_in.c
@@ -51,7 +51,7 @@ static int nr_queue_rx_frame(struct sock *sk, struct sk_buff *skb, int more)
                 if ((skbn = alloc_skb(nr->fraglen, GFP_ATOMIC)) == NULL)
                         return 1;
 
-                skbn->h.raw = skbn->data;
+                skb_reset_transport_header(skbn);
 
                 while ((skbo = skb_dequeue(&nr->frag_queue)) != NULL) {
                         memcpy(skb_put(skbn, skbo->len), skbo->data, skbo->len);
diff --git a/net/netrom/nr_loopback.c b/net/netrom/nr_loopback.c
index e856ae1b360a..99fdab16ded0 100644
--- a/net/netrom/nr_loopback.c
+++ b/net/netrom/nr_loopback.c
@@ -35,7 +35,7 @@ int nr_loopback_queue(struct sk_buff *skb)
 
         if ((skbn = alloc_skb(skb->len, GFP_ATOMIC)) != NULL) {
                 memcpy(skb_put(skbn, skb->len), skb->data, skb->len);
-                skbn->h.raw = skbn->data;
+                skb_reset_transport_header(skbn);
 
                 skb_queue_tail(&loopback_queue, skbn);