alistair23-linux/include/net/netfilter/nf_tables_ipv4.h
Patrick McHardy 4566bf2706 netfilter: nft_meta: add l4proto support
For L3-proto independant rules we need to get at the L4 protocol value
directly. Add it to the nft_pktinfo struct and use the meta expression
to retrieve it.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-01-07 23:57:31 +01:00

27 lines
574 B
C

#ifndef _NF_TABLES_IPV4_H_
#define _NF_TABLES_IPV4_H_
#include <net/netfilter/nf_tables.h>
#include <net/ip.h>
static inline void
nft_set_pktinfo_ipv4(struct nft_pktinfo *pkt,
const struct nf_hook_ops *ops,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out)
{
struct iphdr *ip;
nft_set_pktinfo(pkt, ops, skb, in, out);
ip = ip_hdr(pkt->skb);
pkt->tprot = ip->protocol;
pkt->xt.thoff = ip_hdrlen(pkt->skb);
pkt->xt.fragoff = ntohs(ip->frag_off) & IP_OFFSET;
}
extern struct nft_af_info nft_af_ipv4;
#endif