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/* IPv6-specific defines for netfilter.
* (C)1998 Rusty Russell -- This code is GPL.
* (C)1999 David Jeffery
* this header was blatantly ripped from netfilter_ipv4.h
* it's amazing what adding a bunch of 6s can do =8^)
*/
#ifndef __LINUX_IP6_NETFILTER_H
#define __LINUX_IP6_NETFILTER_H
#include <uapi/linux/netfilter_ipv6.h>
#include <net/tcp.h>
/* Check for an extension */
static inline int
nf_ip6_ext_hdr(u8 nexthdr)
{ return (nexthdr == IPPROTO_HOPOPTS) ||
(nexthdr == IPPROTO_ROUTING) ||
(nexthdr == IPPROTO_FRAGMENT) ||
(nexthdr == IPPROTO_ESP) ||
(nexthdr == IPPROTO_AH) ||
(nexthdr == IPPROTO_NONE) ||
(nexthdr == IPPROTO_DSTOPTS);
}
/* Extra routing may needed on local out, as the QUEUE target never returns
* control to the table.
*/
struct ip6_rt_info {
struct in6_addr daddr;
struct in6_addr saddr;
u_int32_t mark;
};
struct nf_queue_entry;
struct nf_bridge_frag_data;
#ifdef CONFIG_NETFILTER
#include <net/addrconf.h>
static inline int nf_ipv6_chk_addr(struct net *net, const struct in6_addr *addr,
const struct net_device *dev, int strict)
{
#if IS_ENABLED(CONFIG_IPV6)
return ipv6_chk_addr(net, addr, dev, strict);
#else
return 1;
#endif
}
int __nf_ip6_route(struct net *net, struct dst_entry **dst,
struct flowi *fl, bool strict);
static inline int nf_ip6_route(struct net *net, struct dst_entry **dst,
struct flowi *fl, bool strict)
{
#if IS_ENABLED(CONFIG_IPV6)
return __nf_ip6_route(net, dst, fl, strict);
#else
return -EHOSTUNREACH;
#endif
}
#include <net/netfilter/ipv6/nf_defrag_ipv6.h>
int br_ip6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,
struct nf_bridge_frag_data *data,
int (*output)(struct net *, struct sock *sk,
const struct nf_bridge_frag_data *data,
struct sk_buff *));
static inline int nf_br_ip6_fragment(struct net *net, struct sock *sk,
struct sk_buff *skb,
struct nf_bridge_frag_data *data,
int (*output)(struct net *, struct sock *sk,
const struct nf_bridge_frag_data *data,
struct sk_buff *))
{
#if IS_ENABLED(CONFIG_IPV6)
return br_ip6_fragment(net, sk, skb, data, output);
#else
return 1;
#endif
}
int ip6_route_me_harder(struct net *net, struct sock *sk, struct sk_buff *skb);
static inline int nf_ip6_route_me_harder(struct net *net, struct sock *sk, struct sk_buff *skb)
{
#if IS_ENABLED(CONFIG_IPV6)
return ip6_route_me_harder(net, sk, skb);
#else
return -EHOSTUNREACH;
#endif
}
static inline u32 nf_ipv6_cookie_init_sequence(const struct ipv6hdr *iph,
const struct tcphdr *th,
u16 *mssp)
{
#if IS_ENABLED(CONFIG_IPV6) && IS_ENABLED(CONFIG_SYN_COOKIES)
return __cookie_v6_init_sequence(iph, th, mssp);
#endif
return 0;
}
static inline int nf_cookie_v6_check(const struct ipv6hdr *iph,
const struct tcphdr *th)
{
#if IS_ENABLED(CONFIG_IPV6) && IS_ENABLED(CONFIG_SYN_COOKIES)
return __cookie_v6_check(iph, th);
#endif
return 0;
}
__sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
unsigned int dataoff, u_int8_t protocol);
int nf_ip6_check_hbh_len(struct sk_buff *skb, u32 *plen);
#endif /* CONFIG_NETFILTER */
#endif /*__LINUX_IP6_NETFILTER_H*/
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