diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2007-03-13 00:09:15 +0100 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-04-26 07:25:07 +0200 |
| commit | c9bdd4b5257406b0608385d19c40b5511decf4f6 (patch) | |
| tree | fe5319c322a11c0b00e7ef0473762a8d1961da83 /include | |
| parent | [SK_BUFF] ipmr: Missed one conversion to skb_network_header() (diff) | |
| download | linux-c9bdd4b5257406b0608385d19c40b5511decf4f6.tar.xz linux-c9bdd4b5257406b0608385d19c40b5511decf4f6.zip | |
[IP]: Introduce ip_hdrlen()
For the common sequence "skb->nh.iph->ihl * 4", removing a good number of open
coded skb->nh.iph uses, now to go after the rest...
Just out of curiosity, here are the idioms found to get the same result:
skb->nh.iph->ihl << 2
skb->nh.iph->ihl<<2
skb->nh.iph->ihl * 4
skb->nh.iph->ihl*4
(skb->nh.iph)->ihl * sizeof(u32)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/ip.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/net/ip.h b/include/net/ip.h index e79c3e3aa4f6..6f7ba32b199d 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -25,6 +25,7 @@ #include <linux/types.h> #include <linux/ip.h> #include <linux/in.h> +#include <linux/skbuff.h> #include <net/inet_sock.h> #include <net/snmp.h> @@ -43,6 +44,11 @@ struct inet_skb_parm #define IPSKB_REROUTED 16 }; +static inline unsigned int ip_hdrlen(const struct sk_buff *skb) +{ + return skb->nh.iph->ihl * 4; +} + struct ipcm_cookie { __be32 addr; @@ -74,7 +80,6 @@ struct msghdr; struct net_device; struct packet_type; struct rtable; -struct sk_buff; struct sockaddr; extern void ip_mc_dropsocket(struct sock *); |