From ab6a5bb6b28a970104a34f0f6959b73cf61bdc72 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Sun, 18 Mar 2007 17:43:48 -0700 Subject: [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 Signed-off-by: David S. Miller --- include/linux/tcp.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux/tcp.h') 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 #include +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; -- cgit v1.1