1 #ifndef _NET_IP6_ROUTE_H
2 #define _NET_IP6_ROUTE_H
8 #if defined(__BIG_ENDIAN_BITFIELD)
12 #elif defined(__LITTLE_ENDIAN_BITFIELD)
18 __u8 prefix
[0]; /* 0,8 or 16 */
22 #include <net/ip6_fib.h>
25 #include <linux/ipv6.h>
26 #include <linux/route.h>
28 #define RT6_LOOKUP_F_IFACE 0x00000001
29 #define RT6_LOOKUP_F_REACHABLE 0x00000002
30 #define RT6_LOOKUP_F_HAS_SADDR 0x00000004
31 #define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008
32 #define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010
33 #define RT6_LOOKUP_F_SRCPREF_COA 0x00000020
36 * rt6_srcprefs2flags() and rt6_flags2srcprefs() translate
37 * between IPV6_ADDR_PREFERENCES socket option values
38 * IPV6_PREFER_SRC_TMP = 0x1
39 * IPV6_PREFER_SRC_PUBLIC = 0x2
40 * IPV6_PREFER_SRC_COA = 0x4
41 * and above RT6_LOOKUP_F_SRCPREF_xxx flags.
43 static inline int rt6_srcprefs2flags(unsigned int srcprefs
)
45 /* No need to bitmask because srcprefs have only 3 bits. */
49 static inline unsigned int rt6_flags2srcprefs(int flags
)
51 return (flags
>> 3) & 7;
54 static inline bool rt6_need_strict(const struct in6_addr
*daddr
)
56 return ipv6_addr_type(daddr
) &
57 (IPV6_ADDR_MULTICAST
| IPV6_ADDR_LINKLOCAL
| IPV6_ADDR_LOOPBACK
);
60 void ip6_route_input(struct sk_buff
*skb
);
62 struct dst_entry
*ip6_route_output(struct net
*net
, const struct sock
*sk
,
64 struct dst_entry
*ip6_route_lookup(struct net
*net
, struct flowi6
*fl6
,
67 int ip6_route_init(void);
68 void ip6_route_cleanup(void);
70 int ipv6_route_ioctl(struct net
*net
, unsigned int cmd
, void __user
*arg
);
72 int ip6_route_add(struct fib6_config
*cfg
);
73 int ip6_ins_rt(struct rt6_info
*);
74 int ip6_del_rt(struct rt6_info
*);
76 int ip6_route_get_saddr(struct net
*net
, struct rt6_info
*rt
,
77 const struct in6_addr
*daddr
, unsigned int prefs
,
78 struct in6_addr
*saddr
);
80 struct rt6_info
*rt6_lookup(struct net
*net
, const struct in6_addr
*daddr
,
81 const struct in6_addr
*saddr
, int oif
, int flags
);
83 struct dst_entry
*icmp6_dst_alloc(struct net_device
*dev
, struct flowi6
*fl6
);
84 int icmp6_dst_gc(void);
86 void fib6_force_start_gc(struct net
*net
);
88 struct rt6_info
*addrconf_dst_alloc(struct inet6_dev
*idev
,
89 const struct in6_addr
*addr
, bool anycast
);
92 * support functions for ND
95 struct rt6_info
*rt6_get_dflt_router(const struct in6_addr
*addr
,
96 struct net_device
*dev
);
97 struct rt6_info
*rt6_add_dflt_router(const struct in6_addr
*gwaddr
,
98 struct net_device
*dev
, unsigned int pref
);
100 void rt6_purge_dflt_routers(struct net
*net
);
102 int rt6_route_rcv(struct net_device
*dev
, u8
*opt
, int len
,
103 const struct in6_addr
*gwaddr
);
105 void ip6_update_pmtu(struct sk_buff
*skb
, struct net
*net
, __be32 mtu
, int oif
,
107 void ip6_sk_update_pmtu(struct sk_buff
*skb
, struct sock
*sk
, __be32 mtu
);
108 void ip6_redirect(struct sk_buff
*skb
, struct net
*net
, int oif
, u32 mark
);
109 void ip6_redirect_no_header(struct sk_buff
*skb
, struct net
*net
, int oif
,
111 void ip6_sk_redirect(struct sk_buff
*skb
, struct sock
*sk
);
113 struct netlink_callback
;
115 struct rt6_rtnl_dump_arg
{
117 struct netlink_callback
*cb
;
121 int rt6_dump_route(struct rt6_info
*rt
, void *p_arg
);
122 void rt6_ifdown(struct net
*net
, struct net_device
*dev
);
123 void rt6_mtu_change(struct net_device
*dev
, unsigned int mtu
);
124 void rt6_remove_prefsrc(struct inet6_ifaddr
*ifp
);
128 * Store a destination cache entry in a socket
130 static inline void __ip6_dst_store(struct sock
*sk
, struct dst_entry
*dst
,
131 const struct in6_addr
*daddr
,
132 const struct in6_addr
*saddr
)
134 struct ipv6_pinfo
*np
= inet6_sk(sk
);
135 struct rt6_info
*rt
= (struct rt6_info
*) dst
;
137 sk_setup_caps(sk
, dst
);
138 np
->daddr_cache
= daddr
;
139 #ifdef CONFIG_IPV6_SUBTREES
140 np
->saddr_cache
= saddr
;
142 np
->dst_cookie
= rt
->rt6i_node
? rt
->rt6i_node
->fn_sernum
: 0;
145 static inline void ip6_dst_store(struct sock
*sk
, struct dst_entry
*dst
,
146 struct in6_addr
*daddr
, struct in6_addr
*saddr
)
148 spin_lock(&sk
->sk_dst_lock
);
149 __ip6_dst_store(sk
, dst
, daddr
, saddr
);
150 spin_unlock(&sk
->sk_dst_lock
);
153 static inline bool ipv6_unicast_destination(const struct sk_buff
*skb
)
155 struct rt6_info
*rt
= (struct rt6_info
*) skb_dst(skb
);
157 return rt
->rt6i_flags
& RTF_LOCAL
;
160 static inline bool ipv6_anycast_destination(const struct sk_buff
*skb
)
162 struct rt6_info
*rt
= (struct rt6_info
*) skb_dst(skb
);
164 return rt
->rt6i_flags
& RTF_ANYCAST
;
167 int ip6_fragment(struct sk_buff
*skb
, int (*output
)(struct sk_buff
*));
169 static inline int ip6_skb_dst_mtu(struct sk_buff
*skb
)
171 struct ipv6_pinfo
*np
= skb
->sk
? inet6_sk(skb
->sk
) : NULL
;
173 return (np
&& np
->pmtudisc
>= IPV6_PMTUDISC_PROBE
) ?
174 skb_dst(skb
)->dev
->mtu
: dst_mtu(skb_dst(skb
));
177 static inline bool ip6_sk_accept_pmtu(const struct sock
*sk
)
179 return inet6_sk(sk
)->pmtudisc
!= IPV6_PMTUDISC_INTERFACE
&&
180 inet6_sk(sk
)->pmtudisc
!= IPV6_PMTUDISC_OMIT
;
183 static inline bool ip6_sk_local_df(const struct sock
*sk
)
185 return inet6_sk(sk
)->pmtudisc
< IPV6_PMTUDISC_DO
||
186 inet6_sk(sk
)->pmtudisc
== IPV6_PMTUDISC_OMIT
;
189 static inline struct in6_addr
*rt6_nexthop(struct rt6_info
*rt
)
191 return &rt
->rt6i_gateway
;
This page took 0.033883 seconds and 5 git commands to generate.