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[SK_BUFF]: Introduce skb_transport_offset()

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For the quite common 'skb->h.raw - skb->data' sequence.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo
2007-04-25 17:55:53 -07:00
committed by David S. Miller
parent badff6d01a
commit ea2ae17d64
26 changed files with 64 additions and 64 deletions
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5
include/linux/skbuff.h
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@@ -962,6 +962,11 @@ static inline void skb_reset_transport_header(struct sk_buff *skb)
skb->h.raw = skb->data;
}
static inline int skb_transport_offset(const struct sk_buff *skb)
{
return skb->h.raw - skb->data;
}
static inline unsigned char *skb_network_header(const struct sk_buff *skb)
{
return skb->nh.raw;

6
include/net/udplite.h
View File

@@ -101,14 +101,14 @@ static inline int udplite_sender_cscov(struct udp_sock *up, struct udphdr *uh)
static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb)
{
int off, len, cscov = udplite_sender_cscov(udp_sk(sk), skb->h.uh);
int cscov = udplite_sender_cscov(udp_sk(sk), skb->h.uh);
__wsum csum = 0;
skb->ip_summed = CHECKSUM_NONE; /* no HW support for checksumming */
skb_queue_walk(&sk->sk_write_queue, skb) {
off = skb->h.raw - skb->data;
len = skb->len - off;
const int off = skb_transport_offset(skb);
const int len = skb->len - off;
csum = skb_checksum(skb, off, (cscov > len)? len : cscov, csum);