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authorArnaldo Carvalho de Melo <acme@redhat.com>2007-03-18 17:43:48 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:25:24 -0700
commitab6a5bb6b28a970104a34f0f6959b73cf61bdc72 (patch)
tree54cfa7d4fe00d0c28a60022b075afc0856d6fc2b /include/linux/tcp.h
parent88c7664f13bd1a36acb8566b93892a4c58759ac6 (diff)
downloadop-kernel-dev-ab6a5bb6b28a970104a34f0f6959b73cf61bdc72.zip
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[TCP]: Introduce tcp_hdrlen() and tcp_optlen()
The ip_hdrlen() buddy, created to reduce the number of skb->h.th-> uses and to avoid the longer, open coded equivalent. Ditched a no-op in bnx2 in the process. I wonder if we should have a BUG_ON(skb->h.th->doff < 5) in tcp_optlen()... Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/tcp.h')
-rw-r--r--include/linux/tcp.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 18a468d..244ae0d 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -178,6 +178,16 @@ struct tcp_md5sig {
#include <net/inet_connection_sock.h>
#include <net/inet_timewait_sock.h>
+static inline unsigned int tcp_hdrlen(const struct sk_buff *skb)
+{
+ return skb->h.th->doff * 4;
+}
+
+static inline unsigned int tcp_optlen(const struct sk_buff *skb)
+{
+ return (skb->h.th->doff - 5) * 4;
+}
+
/* This defines a selective acknowledgement block. */
struct tcp_sack_block_wire {
__be32 start_seq;
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