Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _NET_IP6_ROUTE_H |
2 | #define _NET_IP6_ROUTE_H | |
3 | ||
70ceb4f5 YH |
4 | struct route_info { |
5 | __u8 type; | |
6 | __u8 length; | |
7 | __u8 prefix_len; | |
8 | #if defined(__BIG_ENDIAN_BITFIELD) | |
9 | __u8 reserved_h:3, | |
10 | route_pref:2, | |
11 | reserved_l:3; | |
12 | #elif defined(__LITTLE_ENDIAN_BITFIELD) | |
13 | __u8 reserved_l:3, | |
14 | route_pref:2, | |
15 | reserved_h:3; | |
16 | #endif | |
e69a4adc | 17 | __be32 lifetime; |
70ceb4f5 YH |
18 | __u8 prefix[0]; /* 0,8 or 16 */ |
19 | }; | |
20 | ||
1da177e4 LT |
21 | #include <net/flow.h> |
22 | #include <net/ip6_fib.h> | |
23 | #include <net/sock.h> | |
1da177e4 LT |
24 | #include <linux/ip.h> |
25 | #include <linux/ipv6.h> | |
9bb5a148 | 26 | #include <linux/route.h> |
1da177e4 | 27 | |
7cbca67c YH |
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 | |
77d16f45 | 34 | |
0c9a2ac1 YH |
35 | /* |
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. | |
42 | */ | |
43 | static inline int rt6_srcprefs2flags(unsigned int srcprefs) | |
44 | { | |
45 | /* No need to bitmask because srcprefs have only 3 bits. */ | |
46 | return srcprefs << 3; | |
47 | } | |
48 | ||
49 | static inline unsigned int rt6_flags2srcprefs(int flags) | |
50 | { | |
51 | return (flags >> 3) & 7; | |
52 | } | |
1da177e4 | 53 | |
5c3a0fd7 | 54 | void rt6_bind_peer(struct rt6_info *rt, int create); |
b3419363 | 55 | |
fbfe95a4 | 56 | static inline struct inet_peer *__rt6_get_peer(struct rt6_info *rt, int create) |
15c05425 | 57 | { |
97bab73f DM |
58 | if (rt6_has_peer(rt)) |
59 | return rt6_peer_ptr(rt); | |
15c05425 | 60 | |
fbfe95a4 | 61 | rt6_bind_peer(rt, create); |
55afabaa | 62 | return (rt6_has_peer(rt) ? rt6_peer_ptr(rt) : NULL); |
15c05425 DM |
63 | } |
64 | ||
fbfe95a4 DM |
65 | static inline struct inet_peer *rt6_get_peer(struct rt6_info *rt) |
66 | { | |
67 | return __rt6_get_peer(rt, 0); | |
68 | } | |
69 | ||
70 | static inline struct inet_peer *rt6_get_peer_create(struct rt6_info *rt) | |
71 | { | |
72 | return __rt6_get_peer(rt, 1); | |
73 | } | |
74 | ||
5c3a0fd7 | 75 | void ip6_route_input(struct sk_buff *skb); |
1da177e4 | 76 | |
5c3a0fd7 JP |
77 | struct dst_entry *ip6_route_output(struct net *net, const struct sock *sk, |
78 | struct flowi6 *fl6); | |
79 | struct dst_entry *ip6_route_lookup(struct net *net, struct flowi6 *fl6, | |
80 | int flags); | |
1da177e4 | 81 | |
5c3a0fd7 JP |
82 | int ip6_route_init(void); |
83 | void ip6_route_cleanup(void); | |
1da177e4 | 84 | |
5c3a0fd7 | 85 | int ipv6_route_ioctl(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 | 86 | |
5c3a0fd7 JP |
87 | int ip6_route_add(struct fib6_config *cfg); |
88 | int ip6_ins_rt(struct rt6_info *); | |
89 | int ip6_del_rt(struct rt6_info *); | |
1da177e4 | 90 | |
5c3a0fd7 JP |
91 | int ip6_route_get_saddr(struct net *net, struct rt6_info *rt, |
92 | const struct in6_addr *daddr, unsigned int prefs, | |
93 | struct in6_addr *saddr); | |
c3968a85 | 94 | |
5c3a0fd7 JP |
95 | struct rt6_info *rt6_lookup(struct net *net, const struct in6_addr *daddr, |
96 | const struct in6_addr *saddr, int oif, int flags); | |
1da177e4 | 97 | |
5c3a0fd7 JP |
98 | struct dst_entry *icmp6_dst_alloc(struct net_device *dev, struct flowi6 *fl6); |
99 | int icmp6_dst_gc(void); | |
3b00944c | 100 | |
5c3a0fd7 | 101 | void fib6_force_start_gc(struct net *net); |
1da177e4 | 102 | |
5c3a0fd7 JP |
103 | struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, |
104 | const struct in6_addr *addr, bool anycast); | |
1da177e4 LT |
105 | |
106 | /* | |
107 | * support functions for ND | |
108 | * | |
109 | */ | |
5c3a0fd7 JP |
110 | struct rt6_info *rt6_get_dflt_router(const struct in6_addr *addr, |
111 | struct net_device *dev); | |
112 | struct rt6_info *rt6_add_dflt_router(const struct in6_addr *gwaddr, | |
113 | struct net_device *dev, unsigned int pref); | |
114 | ||
115 | void rt6_purge_dflt_routers(struct net *net); | |
116 | ||
117 | int rt6_route_rcv(struct net_device *dev, u8 *opt, int len, | |
118 | const struct in6_addr *gwaddr); | |
119 | ||
120 | void ip6_update_pmtu(struct sk_buff *skb, struct net *net, __be32 mtu, int oif, | |
121 | u32 mark); | |
122 | void ip6_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, __be32 mtu); | |
123 | void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark); | |
124 | void ip6_redirect_no_header(struct sk_buff *skb, struct net *net, int oif, | |
125 | u32 mark); | |
126 | void ip6_sk_redirect(struct sk_buff *skb, struct sock *sk); | |
1da177e4 | 127 | |
1da177e4 | 128 | struct netlink_callback; |
1da177e4 | 129 | |
fd2c3ef7 | 130 | struct rt6_rtnl_dump_arg { |
1b43af54 PM |
131 | struct sk_buff *skb; |
132 | struct netlink_callback *cb; | |
191cd582 | 133 | struct net *net; |
1b43af54 PM |
134 | }; |
135 | ||
5c3a0fd7 JP |
136 | int rt6_dump_route(struct rt6_info *rt, void *p_arg); |
137 | void rt6_ifdown(struct net *net, struct net_device *dev); | |
138 | void rt6_mtu_change(struct net_device *dev, unsigned int mtu); | |
139 | void rt6_remove_prefsrc(struct inet6_ifaddr *ifp); | |
1da177e4 | 140 | |
1da177e4 LT |
141 | |
142 | /* | |
143 | * Store a destination cache entry in a socket | |
144 | */ | |
497c615a | 145 | static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst, |
d3818c92 ED |
146 | const struct in6_addr *daddr, |
147 | const struct in6_addr *saddr) | |
1da177e4 LT |
148 | { |
149 | struct ipv6_pinfo *np = inet6_sk(sk); | |
150 | struct rt6_info *rt = (struct rt6_info *) dst; | |
151 | ||
f83ef8c0 | 152 | sk_setup_caps(sk, dst); |
1da177e4 | 153 | np->daddr_cache = daddr; |
8e1ef0a9 YH |
154 | #ifdef CONFIG_IPV6_SUBTREES |
155 | np->saddr_cache = saddr; | |
156 | #endif | |
1da177e4 | 157 | np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; |
497c615a HX |
158 | } |
159 | ||
160 | static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, | |
8e1ef0a9 | 161 | struct in6_addr *daddr, struct in6_addr *saddr) |
497c615a | 162 | { |
b6c6712a | 163 | spin_lock(&sk->sk_dst_lock); |
8e1ef0a9 | 164 | __ip6_dst_store(sk, dst, daddr, saddr); |
b6c6712a | 165 | spin_unlock(&sk->sk_dst_lock); |
1da177e4 LT |
166 | } |
167 | ||
a50feda5 | 168 | static inline bool ipv6_unicast_destination(const struct sk_buff *skb) |
1da177e4 | 169 | { |
adf30907 | 170 | struct rt6_info *rt = (struct rt6_info *) skb_dst(skb); |
1da177e4 LT |
171 | |
172 | return rt->rt6i_flags & RTF_LOCAL; | |
173 | } | |
174 | ||
ad0081e4 DS |
175 | int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *)); |
176 | ||
177 | static inline int ip6_skb_dst_mtu(struct sk_buff *skb) | |
178 | { | |
179 | struct ipv6_pinfo *np = skb->sk ? inet6_sk(skb->sk) : NULL; | |
180 | ||
181 | return (np && np->pmtudisc == IPV6_PMTUDISC_PROBE) ? | |
182 | skb_dst(skb)->dev->mtu : dst_mtu(skb_dst(skb)); | |
183 | } | |
184 | ||
550bab42 | 185 | static inline struct in6_addr *rt6_nexthop(struct rt6_info *rt) |
9bb5a148 | 186 | { |
550bab42 | 187 | return &rt->rt6i_gateway; |
9bb5a148 YH |
188 | } |
189 | ||
1da177e4 | 190 | #endif |