Message ID | 1454600118-30152-4-git-send-email-kraigatgoog@gmail.com |
---|---|
State | Superseded, archived |
Delegated to: | David Miller |
Headers | show |
On Thu, 2016-02-04 at 10:35 -0500, Craig Gallek wrote: > From: Craig Gallek <kraig@google.com> > > tcp_hdrlen is wasteful if you already have a pointer to struct tcphdr. > This splits the size calculation into a helper function that can be > used if a struct tcphdr is already available. > > Signed-off-by: Craig Gallek <kraig@google.com> Acked-by: Eric Dumazet <edumazet@google.com>
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index b386361ba3e8..c216707d63bf 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -29,9 +29,14 @@ static inline struct tcphdr *tcp_hdr(const struct sk_buff *skb) return (struct tcphdr *)skb_transport_header(skb); } +static inline unsigned int __tcp_hdrlen(const struct tcphdr *th) +{ + return th->doff * 4; +} + static inline unsigned int tcp_hdrlen(const struct sk_buff *skb) { - return tcp_hdr(skb)->doff * 4; + return __tcp_hdrlen(tcp_hdr(skb)); } static inline struct tcphdr *inner_tcp_hdr(const struct sk_buff *skb)