tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _NET_IP6_ROUTE_H
2#define _NET_IP6_ROUTE_H
3
4#define IP6_RT_PRIO_USER 1024
5#define IP6_RT_PRIO_ADDRCONF 256
6#define IP6_RT_PRIO_KERN 512
7
8struct route_info {
9 __u8 type;
10 __u8 length;
11 __u8 prefix_len;
12#if defined(__BIG_ENDIAN_BITFIELD)
13 __u8 reserved_h:3,
14 route_pref:2,
15 reserved_l:3;
16#elif defined(__LITTLE_ENDIAN_BITFIELD)
17 __u8 reserved_l:3,
18 route_pref:2,
19 reserved_h:3;
20#endif
21 __be32 lifetime;
22 __u8 prefix[0]; /* 0,8 or 16 */
23};
24
25#ifdef __KERNEL__
26
27#include <net/flow.h>
28#include <net/ip6_fib.h>
29#include <net/sock.h>
30#include <linux/ip.h>
31#include <linux/ipv6.h>
32
33#define RT6_LOOKUP_F_IFACE 0x00000001
34#define RT6_LOOKUP_F_REACHABLE 0x00000002
35#define RT6_LOOKUP_F_HAS_SADDR 0x00000004
36#define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008
37#define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010
38#define RT6_LOOKUP_F_SRCPREF_COA 0x00000020
39
40
41extern void ip6_route_input(struct sk_buff *skb);
42
43extern struct dst_entry * ip6_route_output(struct net *net,
44 struct sock *sk,
45 struct flowi *fl);
46
47extern int ip6_route_init(void);
48extern void ip6_route_cleanup(void);
49
50extern int ipv6_route_ioctl(struct net *net,
51 unsigned int cmd,
52 void __user *arg);
53
54extern int ip6_route_add(struct fib6_config *cfg);
55extern int ip6_ins_rt(struct rt6_info *);
56extern int ip6_del_rt(struct rt6_info *);
57
58extern struct rt6_info *rt6_lookup(struct net *net,
59 const struct in6_addr *daddr,
60 const struct in6_addr *saddr,
61 int oif, int flags);
62
63extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
64 struct neighbour *neigh,
65 const struct in6_addr *addr);
66extern int icmp6_dst_gc(void);
67
68extern void fib6_force_start_gc(struct net *net);
69
70extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
71 const struct in6_addr *addr,
72 int anycast);
73
74extern int ip6_dst_hoplimit(struct dst_entry *dst);
75
76/*
77 * support functions for ND
78 *
79 */
80extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
81 struct net_device *dev);
82extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
83 struct net_device *dev,
84 unsigned int pref);
85
86extern void rt6_purge_dflt_routers(struct net *net);
87
88extern int rt6_route_rcv(struct net_device *dev,
89 u8 *opt, int len,
90 struct in6_addr *gwaddr);
91
92extern void rt6_redirect(struct in6_addr *dest,
93 struct in6_addr *src,
94 struct in6_addr *saddr,
95 struct neighbour *neigh,
96 u8 *lladdr,
97 int on_link);
98
99extern void rt6_pmtu_discovery(struct in6_addr *daddr,
100 struct in6_addr *saddr,
101 struct net_device *dev,
102 u32 pmtu);
103
104struct netlink_callback;
105
106struct rt6_rtnl_dump_arg
107{
108 struct sk_buff *skb;
109 struct netlink_callback *cb;
110 struct net *net;
111};
112
113extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
114extern void rt6_ifdown(struct net *net, struct net_device *dev);
115extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
116
117
118/*
119 * Store a destination cache entry in a socket
120 */
121static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
122 struct in6_addr *daddr, struct in6_addr *saddr)
123{
124 struct ipv6_pinfo *np = inet6_sk(sk);
125 struct rt6_info *rt = (struct rt6_info *) dst;
126
127 sk_setup_caps(sk, dst);
128 np->daddr_cache = daddr;
129#ifdef CONFIG_IPV6_SUBTREES
130 np->saddr_cache = saddr;
131#endif
132 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
133}
134
135static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
136 struct in6_addr *daddr, struct in6_addr *saddr)
137{
138 write_lock(&sk->sk_dst_lock);
139 __ip6_dst_store(sk, dst, daddr, saddr);
140 write_unlock(&sk->sk_dst_lock);
141}
142
143static inline int ipv6_unicast_destination(struct sk_buff *skb)
144{
145 struct rt6_info *rt = (struct rt6_info *) skb->dst;
146
147 return rt->rt6i_flags & RTF_LOCAL;
148}
149
150#endif
151#endif