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_FW 16
5#define IP6_RT_PRIO_USER 1024
6#define IP6_RT_PRIO_ADDRCONF 256
7#define IP6_RT_PRIO_KERN 512
8#define IP6_RT_FLOW_MASK 0x00ff
9
10struct route_info {
11 __u8 type;
12 __u8 length;
13 __u8 prefix_len;
14#if defined(__BIG_ENDIAN_BITFIELD)
15 __u8 reserved_h:3,
16 route_pref:2,
17 reserved_l:3;
18#elif defined(__LITTLE_ENDIAN_BITFIELD)
19 __u8 reserved_l:3,
20 route_pref:2,
21 reserved_h:3;
22#endif
23 __be32 lifetime;
24 __u8 prefix[0]; /* 0,8 or 16 */
25};
26
27#ifdef __KERNEL__
28
29#include <net/flow.h>
30#include <net/ip6_fib.h>
31#include <net/sock.h>
32#include <linux/ip.h>
33#include <linux/ipv6.h>
34
35#define RT6_LOOKUP_F_IFACE 0x1
36#define RT6_LOOKUP_F_REACHABLE 0x2
37#define RT6_LOOKUP_F_HAS_SADDR 0x4
38
39extern struct rt6_info ip6_null_entry;
40
41#ifdef CONFIG_IPV6_MULTIPLE_TABLES
42extern struct rt6_info ip6_prohibit_entry;
43extern struct rt6_info ip6_blk_hole_entry;
44#endif
45
46extern int ip6_rt_gc_interval;
47
48extern void ip6_route_input(struct sk_buff *skb);
49
50extern struct dst_entry * ip6_route_output(struct sock *sk,
51 struct flowi *fl);
52
53extern void ip6_route_init(void);
54extern void ip6_route_cleanup(void);
55
56extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg);
57
58extern int ip6_route_add(struct fib6_config *cfg);
59extern int ip6_ins_rt(struct rt6_info *);
60extern int ip6_del_rt(struct rt6_info *);
61
62extern int ip6_rt_addr_add(struct in6_addr *addr,
63 struct net_device *dev,
64 int anycast);
65
66extern int ip6_rt_addr_del(struct in6_addr *addr,
67 struct net_device *dev);
68
69extern void rt6_sndmsg(int type, struct in6_addr *dst,
70 struct in6_addr *src,
71 struct in6_addr *gw,
72 struct net_device *dev,
73 int dstlen, int srclen,
74 int metric, __u32 flags);
75
76extern struct rt6_info *rt6_lookup(struct in6_addr *daddr,
77 struct in6_addr *saddr,
78 int oif, int flags);
79
80extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev,
81 struct neighbour *neigh,
82 struct in6_addr *addr,
83 int (*output)(struct sk_buff *));
84extern int ndisc_dst_gc(int *more);
85extern void fib6_force_start_gc(void);
86
87extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
88 const struct in6_addr *addr,
89 int anycast);
90
91/*
92 * support functions for ND
93 *
94 */
95extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
96 struct net_device *dev);
97extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
98 struct net_device *dev,
99 unsigned int pref);
100
101extern void rt6_purge_dflt_routers(void);
102
103extern int rt6_route_rcv(struct net_device *dev,
104 u8 *opt, int len,
105 struct in6_addr *gwaddr);
106
107extern void rt6_redirect(struct in6_addr *dest,
108 struct in6_addr *src,
109 struct in6_addr *saddr,
110 struct neighbour *neigh,
111 u8 *lladdr,
112 int on_link);
113
114extern void rt6_pmtu_discovery(struct in6_addr *daddr,
115 struct in6_addr *saddr,
116 struct net_device *dev,
117 u32 pmtu);
118
119struct nlmsghdr;
120struct netlink_callback;
121extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
122extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
123extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
124extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
125
126struct rt6_rtnl_dump_arg
127{
128 struct sk_buff *skb;
129 struct netlink_callback *cb;
130};
131
132extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
133extern void rt6_ifdown(struct net_device *dev);
134extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
135
136extern rwlock_t rt6_lock;
137
138/*
139 * Store a destination cache entry in a socket
140 */
141static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
142 struct in6_addr *daddr, struct in6_addr *saddr)
143{
144 struct ipv6_pinfo *np = inet6_sk(sk);
145 struct rt6_info *rt = (struct rt6_info *) dst;
146
147 sk_setup_caps(sk, dst);
148 np->daddr_cache = daddr;
149#ifdef CONFIG_IPV6_SUBTREES
150 np->saddr_cache = saddr;
151#endif
152 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
153}
154
155static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
156 struct in6_addr *daddr, struct in6_addr *saddr)
157{
158 write_lock(&sk->sk_dst_lock);
159 __ip6_dst_store(sk, dst, daddr, saddr);
160 write_unlock(&sk->sk_dst_lock);
161}
162
163static inline int ipv6_unicast_destination(struct sk_buff *skb)
164{
165 struct rt6_info *rt = (struct rt6_info *) skb->dst;
166
167 return rt->rt6i_flags & RTF_LOCAL;
168}
169
170#endif
171#endif