Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm / 43001c9515cf87935c50e84b3e27b1f3b3776b5d / . / include / net / ndisc.h
blob: d3915dabe6de1807a909b309233ec8e0e3b68885 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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 */
YOSHIFUJI Hideaki70ceb4f2006-03-20 17:06:24 -0800[diff] [blame]25 __ND_OPT_ARRAY_MAX,
26 ND_OPT_ROUTE_INFO = 24, /* RFC4191 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]27 __ND_OPT_MAX
28};
29
30#define MAX_RTR_SOLICITATION_DELAY HZ
31
32#define ND_REACHABLE_TIME (30*HZ)
33#define ND_RETRANS_TIMER HZ
34
35#define ND_MIN_RANDOM_FACTOR (1/2)
36#define ND_MAX_RANDOM_FACTOR (3/2)
37
38#ifdef __KERNEL__
39
Arnaldo Carvalho de Melo14c85022005-12-27 02:43:12 -0200[diff] [blame]40#include <linux/compiler.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]41#include <linux/icmpv6.h>
Arnaldo Carvalho de Melo14c85022005-12-27 02:43:12 -0200[diff] [blame]42#include <linux/in6.h>
43#include <linux/types.h>
44
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]45#include <net/neighbour.h>
Arnaldo Carvalho de Melo14c85022005-12-27 02:43:12 -0200[diff] [blame]46
47struct ctl_table;
48struct file;
49struct inet6_dev;
50struct net_device;
51struct net_proto_family;
52struct sk_buff;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]53
54extern struct neigh_table nd_tbl;
55
56struct nd_msg {
57 struct icmp6hdr icmph;
58 struct in6_addr target;
59 __u8 opt[0];
60};
61
62struct rs_msg {
63 struct icmp6hdr icmph;
64 __u8 opt[0];
65};
66
67struct ra_msg {
68 struct icmp6hdr icmph;
69 __u32 reachable_time;
70 __u32 retrans_timer;
71};
72
73struct nd_opt_hdr {
74 __u8 nd_opt_type;
75 __u8 nd_opt_len;
76} __attribute__((__packed__));
77
78
79extern int ndisc_init(struct net_proto_family *ops);
80
81extern void ndisc_cleanup(void);
82
83extern int ndisc_rcv(struct sk_buff *skb);
84
85extern void ndisc_send_ns(struct net_device *dev,
86 struct neighbour *neigh,
87 struct in6_addr *solicit,
88 struct in6_addr *daddr,
89 struct in6_addr *saddr);
90
91extern void ndisc_send_rs(struct net_device *dev,
92 struct in6_addr *saddr,
93 struct in6_addr *daddr);
94
95extern void ndisc_forwarding_on(void);
96extern void ndisc_forwarding_off(void);
97
98extern void ndisc_send_redirect(struct sk_buff *skb,
99 struct neighbour *neigh,
100 struct in6_addr *target);
101
102extern int ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir);
103
104
105struct rt6_info * dflt_rt_lookup(void);
106
107/*
108 * IGMP
109 */
110extern int igmp6_init(struct net_proto_family *ops);
111
112extern void igmp6_cleanup(void);
113
114extern int igmp6_event_query(struct sk_buff *skb);
115
116extern int igmp6_event_report(struct sk_buff *skb);
117
118extern void igmp6_cleanup(void);
119
120#ifdef CONFIG_SYSCTL
Arnaldo Carvalho de Melo14c85022005-12-27 02:43:12 -0200[diff] [blame]121extern int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]122 int write,
123 struct file * filp,
124 void __user *buffer,
125 size_t *lenp,
126 loff_t *ppos);
127#endif
128
129extern void inet6_ifinfo_notify(int event,
130 struct inet6_dev *idev);
131
132static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, struct in6_addr *addr)
133{
134
135 if (dev)
136 return __neigh_lookup(&nd_tbl, addr, dev, 1);
137
138 return NULL;
139}
140
141
142#endif /* __KERNEL__ */
143
144
145#endif