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 __u32 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
35struct pol_chain {
36 int type;
37 int priority;
38 struct fib6_node *rules;
39 struct pol_chain *next;
40};
41
42extern struct rt6_info ip6_null_entry;
43
44extern int ip6_rt_gc_interval;
45
46extern void ip6_route_input(struct sk_buff *skb);
47
48extern struct dst_entry * ip6_route_output(struct sock *sk,
49 struct flowi *fl);
50
51extern int ip6_route_me_harder(struct sk_buff *skb);
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 in6_rtmsg *rtmsg,
59 struct nlmsghdr *,
60 void *rtattr,
61 struct netlink_skb_parms *req);
62extern int ip6_ins_rt(struct rt6_info *,
63 struct nlmsghdr *,
64 void *rtattr,
65 struct netlink_skb_parms *req);
66extern int ip6_del_rt(struct rt6_info *,
67 struct nlmsghdr *,
68 void *rtattr,
69 struct netlink_skb_parms *req);
70
71extern int ip6_rt_addr_add(struct in6_addr *addr,
72 struct net_device *dev,
73 int anycast);
74
75extern int ip6_rt_addr_del(struct in6_addr *addr,
76 struct net_device *dev);
77
78extern void rt6_sndmsg(int type, struct in6_addr *dst,
79 struct in6_addr *src,
80 struct in6_addr *gw,
81 struct net_device *dev,
82 int dstlen, int srclen,
83 int metric, __u32 flags);
84
85extern struct rt6_info *rt6_lookup(struct in6_addr *daddr,
86 struct in6_addr *saddr,
87 int oif, int flags);
88
89extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev,
90 struct neighbour *neigh,
91 struct in6_addr *addr,
92 int (*output)(struct sk_buff *));
93extern int ndisc_dst_gc(int *more);
94extern void fib6_force_start_gc(void);
95
96extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
97 const struct in6_addr *addr,
98 int anycast);
99
100/*
101 * support functions for ND
102 *
103 */
104extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
105 struct net_device *dev);
106extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
107 struct net_device *dev,
108 unsigned int pref);
109
110extern void rt6_purge_dflt_routers(void);
111
112extern int rt6_route_rcv(struct net_device *dev,
113 u8 *opt, int len,
114 struct in6_addr *gwaddr);
115
116extern void rt6_redirect(struct in6_addr *dest,
117 struct in6_addr *saddr,
118 struct neighbour *neigh,
119 u8 *lladdr,
120 int on_link);
121
122extern void rt6_pmtu_discovery(struct in6_addr *daddr,
123 struct in6_addr *saddr,
124 struct net_device *dev,
125 u32 pmtu);
126
127struct nlmsghdr;
128struct netlink_callback;
129extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
130extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
131extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
132extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
133
134extern void rt6_ifdown(struct net_device *dev);
135extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
136
137extern rwlock_t rt6_lock;
138
139/*
140 * Store a destination cache entry in a socket
141 */
142static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
143 struct in6_addr *daddr)
144{
145 struct ipv6_pinfo *np = inet6_sk(sk);
146 struct rt6_info *rt = (struct rt6_info *) dst;
147
148 sk_setup_caps(sk, dst);
149 np->daddr_cache = daddr;
150 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
151}
152
153static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
154 struct in6_addr *daddr)
155{
156 write_lock(&sk->sk_dst_lock);
157 __ip6_dst_store(sk, dst, daddr);
158 write_unlock(&sk->sk_dst_lock);
159}
160
161static inline int ipv6_unicast_destination(struct sk_buff *skb)
162{
163 struct rt6_info *rt = (struct rt6_info *) skb->dst;
164
165 return rt->rt6i_flags & RTF_LOCAL;
166}
167
168#endif
169#endif