[SK_BUFF]: Introduce skb_transport_header(skb)
For the places where we need a pointer to the transport header, it is
still legal to touch skb->h.raw directly if just adding to,
subtracting from or setting it to another layer header.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index f832f3c..2b214cc 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2219,8 +2219,9 @@
th->check = ~csum_fold((__force __wsum)((__force u32)th->check +
(__force u32)delta));
if (skb->ip_summed != CHECKSUM_PARTIAL)
- th->check = csum_fold(csum_partial(skb->h.raw, thlen,
- skb->csum));
+ th->check =
+ csum_fold(csum_partial(skb_transport_header(skb),
+ thlen, skb->csum));
seq += len;
skb = skb->next;
@@ -2230,12 +2231,13 @@
th->cwr = 0;
} while (skb->next);
- delta = htonl(oldlen + (skb->tail - skb->h.raw) + skb->data_len);
+ delta = htonl(oldlen + (skb->tail - skb_transport_header(skb)) +
+ skb->data_len);
th->check = ~csum_fold((__force __wsum)((__force u32)th->check +
(__force u32)delta));
if (skb->ip_summed != CHECKSUM_PARTIAL)
- th->check = csum_fold(csum_partial(skb->h.raw, thlen,
- skb->csum));
+ th->check = csum_fold(csum_partial(skb_transport_header(skb),
+ thlen, skb->csum));
out:
return segs;