blob: 37c1a1ed82c1f9697bb58612050cd0ec107c35ba [file] [log] [blame]
#ifndef _NET_IP6_ROUTE_H
#define _NET_IP6_ROUTE_H
#define IP6_RT_PRIO_USER 1024
#define IP6_RT_PRIO_ADDRCONF 256
struct route_info {
__u8 type;
__u8 length;
__u8 prefix_len;
#if defined(__BIG_ENDIAN_BITFIELD)
__u8 reserved_h:3,
__u8 reserved_l:3,
__be32 lifetime;
__u8 prefix[0]; /* 0,8 or 16 */
#include <net/flow.h>
#include <net/ip6_fib.h>
#include <net/sock.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#define RT6_LOOKUP_F_IFACE 0x00000001
#define RT6_LOOKUP_F_REACHABLE 0x00000002
#define RT6_LOOKUP_F_HAS_SADDR 0x00000004
#define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008
#define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010
#define RT6_LOOKUP_F_SRCPREF_COA 0x00000020
* rt6_srcprefs2flags() and rt6_flags2srcprefs() translate
* between IPV6_ADDR_PREFERENCES socket option values
* and above RT6_LOOKUP_F_SRCPREF_xxx flags.
static inline int rt6_srcprefs2flags(unsigned int srcprefs)
/* No need to bitmask because srcprefs have only 3 bits. */
return srcprefs << 3;
static inline unsigned int rt6_flags2srcprefs(int flags)
return (flags >> 3) & 7;
extern void rt6_bind_peer(struct rt6_info *rt,
int create);
static inline struct inet_peer *rt6_get_peer(struct rt6_info *rt)
if (rt->rt6i_peer)
return rt->rt6i_peer;
rt6_bind_peer(rt, 0);
return rt->rt6i_peer;
extern void ip6_route_input(struct sk_buff *skb);
extern struct dst_entry * ip6_route_output(struct net *net,
const struct sock *sk,
struct flowi6 *fl6);
extern struct dst_entry * ip6_route_lookup(struct net *net,
struct flowi6 *fl6, int flags);
extern int ip6_route_init(void);
extern void ip6_route_cleanup(void);
extern int ipv6_route_ioctl(struct net *net,
unsigned int cmd,
void __user *arg);
extern int ip6_route_add(struct fib6_config *cfg);
extern int ip6_ins_rt(struct rt6_info *);
extern int ip6_del_rt(struct rt6_info *);
extern int ip6_route_get_saddr(struct net *net,
struct rt6_info *rt,
const struct in6_addr *daddr,
unsigned int prefs,
struct in6_addr *saddr);
extern struct rt6_info *rt6_lookup(struct net *net,
const struct in6_addr *daddr,
const struct in6_addr *saddr,
int oif, int flags);
extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
struct neighbour *neigh,
struct flowi6 *fl6);
extern int icmp6_dst_gc(void);
extern void fib6_force_start_gc(struct net *net);
extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
const struct in6_addr *addr,
bool anycast);
extern int ip6_dst_hoplimit(struct dst_entry *dst);
* support functions for ND
extern struct rt6_info * rt6_get_dflt_router(const struct in6_addr *addr,
struct net_device *dev);
extern struct rt6_info * rt6_add_dflt_router(const struct in6_addr *gwaddr,
struct net_device *dev,
unsigned int pref);
extern void rt6_purge_dflt_routers(struct net *net);
extern int rt6_route_rcv(struct net_device *dev,
u8 *opt, int len,
const struct in6_addr *gwaddr);
extern void rt6_redirect(const struct in6_addr *dest,
const struct in6_addr *src,
const struct in6_addr *saddr,
struct neighbour *neigh,
u8 *lladdr,
int on_link);
extern void rt6_pmtu_discovery(const struct in6_addr *daddr,
const struct in6_addr *saddr,
struct net_device *dev,
u32 pmtu);
struct netlink_callback;
struct rt6_rtnl_dump_arg {
struct sk_buff *skb;
struct netlink_callback *cb;
struct net *net;
extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
extern void rt6_ifdown(struct net *net, struct net_device *dev);
extern void rt6_mtu_change(struct net_device *dev, unsigned int mtu);
extern void rt6_remove_prefsrc(struct inet6_ifaddr *ifp);
* Store a destination cache entry in a socket
static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
struct in6_addr *daddr, struct in6_addr *saddr)
struct ipv6_pinfo *np = inet6_sk(sk);
struct rt6_info *rt = (struct rt6_info *) dst;
sk_setup_caps(sk, dst);
np->daddr_cache = daddr;
np->saddr_cache = saddr;
np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
struct in6_addr *daddr, struct in6_addr *saddr)
__ip6_dst_store(sk, dst, daddr, saddr);
static inline bool ipv6_unicast_destination(const struct sk_buff *skb)
struct rt6_info *rt = (struct rt6_info *) skb_dst(skb);
return rt->rt6i_flags & RTF_LOCAL;
int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *));
static inline int ip6_skb_dst_mtu(struct sk_buff *skb)
struct ipv6_pinfo *np = skb->sk ? inet6_sk(skb->sk) : NULL;
return (np && np->pmtudisc == IPV6_PMTUDISC_PROBE) ?
skb_dst(skb)->dev->mtu : dst_mtu(skb_dst(skb));