tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _NDISC_H
2#define _NDISC_H
3
4/*
5 * ICMP codes for neighbour discovery messages
6 */
7
8#define NDISC_ROUTER_SOLICITATION 133
9#define NDISC_ROUTER_ADVERTISEMENT 134
10#define NDISC_NEIGHBOUR_SOLICITATION 135
11#define NDISC_NEIGHBOUR_ADVERTISEMENT 136
12#define NDISC_REDIRECT 137
13
14/*
15 * ndisc options
16 */
17
18enum {
19 __ND_OPT_PREFIX_INFO_END = 0,
20 ND_OPT_SOURCE_LL_ADDR = 1, /* RFC2461 */
21 ND_OPT_TARGET_LL_ADDR = 2, /* RFC2461 */
22 ND_OPT_PREFIX_INFO = 3, /* RFC2461 */
23 ND_OPT_REDIRECT_HDR = 4, /* RFC2461 */
24 ND_OPT_MTU = 5, /* RFC2461 */
25 __ND_OPT_MAX
26};
27
28#define MAX_RTR_SOLICITATION_DELAY HZ
29
30#define ND_REACHABLE_TIME (30*HZ)
31#define ND_RETRANS_TIMER HZ
32
33#define ND_MIN_RANDOM_FACTOR (1/2)
34#define ND_MAX_RANDOM_FACTOR (3/2)
35
36#ifdef __KERNEL__
37
38#include <linux/config.h>
39#include <linux/compiler.h>
40#include <linux/icmpv6.h>
41#include <linux/in6.h>
42#include <linux/types.h>
43
44#include <net/neighbour.h>
45
46struct ctl_table;
47struct file;
48struct inet6_dev;
49struct net_device;
50struct net_proto_family;
51struct sk_buff;
52
53extern struct neigh_table nd_tbl;
54
55struct nd_msg {
56 struct icmp6hdr icmph;
57 struct in6_addr target;
58 __u8 opt[0];
59};
60
61struct rs_msg {
62 struct icmp6hdr icmph;
63 __u8 opt[0];
64};
65
66struct ra_msg {
67 struct icmp6hdr icmph;
68 __u32 reachable_time;
69 __u32 retrans_timer;
70};
71
72struct nd_opt_hdr {
73 __u8 nd_opt_type;
74 __u8 nd_opt_len;
75} __attribute__((__packed__));
76
77
78extern int ndisc_init(struct net_proto_family *ops);
79
80extern void ndisc_cleanup(void);
81
82extern int ndisc_rcv(struct sk_buff *skb);
83
84extern void ndisc_send_ns(struct net_device *dev,
85 struct neighbour *neigh,
86 struct in6_addr *solicit,
87 struct in6_addr *daddr,
88 struct in6_addr *saddr);
89
90extern void ndisc_send_rs(struct net_device *dev,
91 struct in6_addr *saddr,
92 struct in6_addr *daddr);
93
94extern void ndisc_forwarding_on(void);
95extern void ndisc_forwarding_off(void);
96
97extern void ndisc_send_redirect(struct sk_buff *skb,
98 struct neighbour *neigh,
99 struct in6_addr *target);
100
101extern int ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir);
102
103
104struct rt6_info * dflt_rt_lookup(void);
105
106/*
107 * IGMP
108 */
109extern int igmp6_init(struct net_proto_family *ops);
110
111extern void igmp6_cleanup(void);
112
113extern int igmp6_event_query(struct sk_buff *skb);
114
115extern int igmp6_event_report(struct sk_buff *skb);
116
117extern void igmp6_cleanup(void);
118
119#ifdef CONFIG_SYSCTL
120extern int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl,
121 int write,
122 struct file * filp,
123 void __user *buffer,
124 size_t *lenp,
125 loff_t *ppos);
126#endif
127
128extern void inet6_ifinfo_notify(int event,
129 struct inet6_dev *idev);
130
131static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, struct in6_addr *addr)
132{
133
134 if (dev)
135 return __neigh_lookup(&nd_tbl, addr, dev, 1);
136
137 return NULL;
138}
139
140
141#endif /* __KERNEL__ */
142
143
144#endif