Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _NET_IP6_ROUTE_H |
2 | #define _NET_IP6_ROUTE_H | |
3 | ||
1da177e4 LT |
4 | #define IP6_RT_PRIO_USER 1024 |
5 | #define IP6_RT_PRIO_ADDRCONF 256 | |
1da177e4 | 6 | |
70ceb4f5 YH |
7 | struct route_info { |
8 | __u8 type; | |
9 | __u8 length; | |
10 | __u8 prefix_len; | |
11 | #if defined(__BIG_ENDIAN_BITFIELD) | |
12 | __u8 reserved_h:3, | |
13 | route_pref:2, | |
14 | reserved_l:3; | |
15 | #elif defined(__LITTLE_ENDIAN_BITFIELD) | |
16 | __u8 reserved_l:3, | |
17 | route_pref:2, | |
18 | reserved_h:3; | |
19 | #endif | |
e69a4adc | 20 | __be32 lifetime; |
70ceb4f5 YH |
21 | __u8 prefix[0]; /* 0,8 or 16 */ |
22 | }; | |
23 | ||
1da177e4 LT |
24 | #include <net/flow.h> |
25 | #include <net/ip6_fib.h> | |
26 | #include <net/sock.h> | |
1da177e4 LT |
27 | #include <linux/ip.h> |
28 | #include <linux/ipv6.h> | |
29 | ||
7cbca67c YH |
30 | #define RT6_LOOKUP_F_IFACE 0x00000001 |
31 | #define RT6_LOOKUP_F_REACHABLE 0x00000002 | |
32 | #define RT6_LOOKUP_F_HAS_SADDR 0x00000004 | |
33 | #define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008 | |
34 | #define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010 | |
35 | #define RT6_LOOKUP_F_SRCPREF_COA 0x00000020 | |
77d16f45 | 36 | |
0c9a2ac1 YH |
37 | /* |
38 | * rt6_srcprefs2flags() and rt6_flags2srcprefs() translate | |
39 | * between IPV6_ADDR_PREFERENCES socket option values | |
40 | * IPV6_PREFER_SRC_TMP = 0x1 | |
41 | * IPV6_PREFER_SRC_PUBLIC = 0x2 | |
42 | * IPV6_PREFER_SRC_COA = 0x4 | |
43 | * and above RT6_LOOKUP_F_SRCPREF_xxx flags. | |
44 | */ | |
45 | static inline int rt6_srcprefs2flags(unsigned int srcprefs) | |
46 | { | |
47 | /* No need to bitmask because srcprefs have only 3 bits. */ | |
48 | return srcprefs << 3; | |
49 | } | |
50 | ||
51 | static inline unsigned int rt6_flags2srcprefs(int flags) | |
52 | { | |
53 | return (flags >> 3) & 7; | |
54 | } | |
1da177e4 | 55 | |
fbfe95a4 | 56 | extern void rt6_bind_peer(struct rt6_info *rt, int create); |
b3419363 | 57 | |
fbfe95a4 | 58 | static inline struct inet_peer *__rt6_get_peer(struct rt6_info *rt, int create) |
15c05425 | 59 | { |
97bab73f DM |
60 | if (rt6_has_peer(rt)) |
61 | return rt6_peer_ptr(rt); | |
15c05425 | 62 | |
fbfe95a4 | 63 | rt6_bind_peer(rt, create); |
55afabaa | 64 | return (rt6_has_peer(rt) ? rt6_peer_ptr(rt) : NULL); |
15c05425 DM |
65 | } |
66 | ||
fbfe95a4 DM |
67 | static inline struct inet_peer *rt6_get_peer(struct rt6_info *rt) |
68 | { | |
69 | return __rt6_get_peer(rt, 0); | |
70 | } | |
71 | ||
72 | static inline struct inet_peer *rt6_get_peer_create(struct rt6_info *rt) | |
73 | { | |
74 | return __rt6_get_peer(rt, 1); | |
75 | } | |
76 | ||
1da177e4 LT |
77 | extern void ip6_route_input(struct sk_buff *skb); |
78 | ||
4591db4f | 79 | extern struct dst_entry * ip6_route_output(struct net *net, |
9c7a4f9c | 80 | const struct sock *sk, |
4c9483b2 | 81 | struct flowi6 *fl6); |
ea6e574e FW |
82 | extern struct dst_entry * ip6_route_lookup(struct net *net, |
83 | struct flowi6 *fl6, int flags); | |
1da177e4 | 84 | |
433d49c3 | 85 | extern int ip6_route_init(void); |
1da177e4 LT |
86 | extern void ip6_route_cleanup(void); |
87 | ||
5578689a DL |
88 | extern int ipv6_route_ioctl(struct net *net, |
89 | unsigned int cmd, | |
90 | void __user *arg); | |
1da177e4 | 91 | |
86872cb5 | 92 | extern int ip6_route_add(struct fib6_config *cfg); |
40e22e8f | 93 | extern int ip6_ins_rt(struct rt6_info *); |
e0a1ad73 | 94 | extern int ip6_del_rt(struct rt6_info *); |
1da177e4 | 95 | |
c3968a85 DW |
96 | extern int ip6_route_get_saddr(struct net *net, |
97 | struct rt6_info *rt, | |
b71d1d42 | 98 | const struct in6_addr *daddr, |
c3968a85 DW |
99 | unsigned int prefs, |
100 | struct in6_addr *saddr); | |
101 | ||
606a2b48 | 102 | extern struct rt6_info *rt6_lookup(struct net *net, |
9acd9f3a YH |
103 | const struct in6_addr *daddr, |
104 | const struct in6_addr *saddr, | |
1da177e4 LT |
105 | int oif, int flags); |
106 | ||
3b00944c | 107 | extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev, |
1da177e4 | 108 | struct neighbour *neigh, |
87a11578 | 109 | struct flowi6 *fl6); |
3d0f24a7 | 110 | extern int icmp6_dst_gc(void); |
3b00944c | 111 | |
63152fc0 | 112 | extern void fib6_force_start_gc(struct net *net); |
1da177e4 LT |
113 | |
114 | extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, | |
115 | const struct in6_addr *addr, | |
8f031519 | 116 | bool anycast); |
1da177e4 | 117 | |
6b75d090 YH |
118 | extern int ip6_dst_hoplimit(struct dst_entry *dst); |
119 | ||
1da177e4 LT |
120 | /* |
121 | * support functions for ND | |
122 | * | |
123 | */ | |
b71d1d42 | 124 | extern struct rt6_info * rt6_get_dflt_router(const struct in6_addr *addr, |
1da177e4 | 125 | struct net_device *dev); |
b71d1d42 | 126 | extern struct rt6_info * rt6_add_dflt_router(const struct in6_addr *gwaddr, |
ebacaaa0 YH |
127 | struct net_device *dev, |
128 | unsigned int pref); | |
1da177e4 | 129 | |
7b4da532 | 130 | extern void rt6_purge_dflt_routers(struct net *net); |
1da177e4 | 131 | |
70ceb4f5 YH |
132 | extern int rt6_route_rcv(struct net_device *dev, |
133 | u8 *opt, int len, | |
b71d1d42 | 134 | const struct in6_addr *gwaddr); |
70ceb4f5 | 135 | |
81aded24 DM |
136 | extern void ip6_update_pmtu(struct sk_buff *skb, struct net *net, __be32 mtu, |
137 | int oif, u32 mark); | |
138 | extern void ip6_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, | |
139 | __be32 mtu); | |
3a5ad2ee DM |
140 | extern void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark); |
141 | extern void ip6_sk_redirect(struct sk_buff *skb, struct sock *sk); | |
1da177e4 | 142 | |
1da177e4 | 143 | struct netlink_callback; |
1da177e4 | 144 | |
fd2c3ef7 | 145 | struct rt6_rtnl_dump_arg { |
1b43af54 PM |
146 | struct sk_buff *skb; |
147 | struct netlink_callback *cb; | |
191cd582 | 148 | struct net *net; |
1b43af54 PM |
149 | }; |
150 | ||
151 | extern int rt6_dump_route(struct rt6_info *rt, void *p_arg); | |
f3db4851 | 152 | extern void rt6_ifdown(struct net *net, struct net_device *dev); |
95c96174 | 153 | extern void rt6_mtu_change(struct net_device *dev, unsigned int mtu); |
c3968a85 | 154 | extern void rt6_remove_prefsrc(struct inet6_ifaddr *ifp); |
1da177e4 | 155 | |
1da177e4 LT |
156 | |
157 | /* | |
158 | * Store a destination cache entry in a socket | |
159 | */ | |
497c615a | 160 | static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst, |
d3818c92 ED |
161 | const struct in6_addr *daddr, |
162 | const struct in6_addr *saddr) | |
1da177e4 LT |
163 | { |
164 | struct ipv6_pinfo *np = inet6_sk(sk); | |
165 | struct rt6_info *rt = (struct rt6_info *) dst; | |
166 | ||
f83ef8c0 | 167 | sk_setup_caps(sk, dst); |
1da177e4 | 168 | np->daddr_cache = daddr; |
8e1ef0a9 YH |
169 | #ifdef CONFIG_IPV6_SUBTREES |
170 | np->saddr_cache = saddr; | |
171 | #endif | |
1da177e4 | 172 | np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; |
497c615a HX |
173 | } |
174 | ||
175 | static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, | |
8e1ef0a9 | 176 | struct in6_addr *daddr, struct in6_addr *saddr) |
497c615a | 177 | { |
b6c6712a | 178 | spin_lock(&sk->sk_dst_lock); |
8e1ef0a9 | 179 | __ip6_dst_store(sk, dst, daddr, saddr); |
b6c6712a | 180 | spin_unlock(&sk->sk_dst_lock); |
1da177e4 LT |
181 | } |
182 | ||
a50feda5 | 183 | static inline bool ipv6_unicast_destination(const struct sk_buff *skb) |
1da177e4 | 184 | { |
adf30907 | 185 | struct rt6_info *rt = (struct rt6_info *) skb_dst(skb); |
1da177e4 LT |
186 | |
187 | return rt->rt6i_flags & RTF_LOCAL; | |
188 | } | |
189 | ||
ad0081e4 DS |
190 | int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *)); |
191 | ||
192 | static inline int ip6_skb_dst_mtu(struct sk_buff *skb) | |
193 | { | |
194 | struct ipv6_pinfo *np = skb->sk ? inet6_sk(skb->sk) : NULL; | |
195 | ||
196 | return (np && np->pmtudisc == IPV6_PMTUDISC_PROBE) ? | |
197 | skb_dst(skb)->dev->mtu : dst_mtu(skb_dst(skb)); | |
198 | } | |
199 | ||
1da177e4 | 200 | #endif |