[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>
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 1900c62..0f4434e 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -654,7 +654,7 @@
* before previous one went down. */
if (frag) {
frag->ip_summed = CHECKSUM_NONE;
- frag->h.raw = frag->data;
+ skb_reset_transport_header(frag);
fh = (struct frag_hdr*)__skb_push(frag, sizeof(struct frag_hdr));
__skb_push(frag, hlen);
skb_reset_network_header(frag);
@@ -747,8 +747,8 @@
skb_reserve(frag, LL_RESERVED_SPACE(rt->u.dst.dev));
skb_put(frag, len + hlen + sizeof(struct frag_hdr));
skb_reset_network_header(frag);
- fh = (struct frag_hdr*)(frag->data + hlen);
- frag->h.raw = frag->data + hlen + sizeof(struct frag_hdr);
+ fh = (struct frag_hdr *)(skb_network_header(frag) + hlen);
+ frag->h.raw = frag->nh.raw + hlen + sizeof(struct frag_hdr);
/*
* Charge the memory for the fragment to any owner
@@ -991,7 +991,7 @@
skb_reset_network_header(skb);
/* initialize protocol header pointer */
- skb->h.raw = skb->data + fragheaderlen;
+ skb->h.raw = skb->nh.raw + fragheaderlen;
skb->ip_summed = CHECKSUM_PARTIAL;
skb->csum = 0;