136 lines
2.8 KiB
C
136 lines
2.8 KiB
C
#ifndef _NDISC_H
|
|
#define _NDISC_H
|
|
|
|
/*
|
|
* ICMP codes for neighbour discovery messages
|
|
*/
|
|
|
|
#define NDISC_ROUTER_SOLICITATION 133
|
|
#define NDISC_ROUTER_ADVERTISEMENT 134
|
|
#define NDISC_NEIGHBOUR_SOLICITATION 135
|
|
#define NDISC_NEIGHBOUR_ADVERTISEMENT 136
|
|
#define NDISC_REDIRECT 137
|
|
|
|
/*
|
|
* ndisc options
|
|
*/
|
|
|
|
enum {
|
|
__ND_OPT_PREFIX_INFO_END = 0,
|
|
ND_OPT_SOURCE_LL_ADDR = 1, /* RFC2461 */
|
|
ND_OPT_TARGET_LL_ADDR = 2, /* RFC2461 */
|
|
ND_OPT_PREFIX_INFO = 3, /* RFC2461 */
|
|
ND_OPT_REDIRECT_HDR = 4, /* RFC2461 */
|
|
ND_OPT_MTU = 5, /* RFC2461 */
|
|
__ND_OPT_MAX
|
|
};
|
|
|
|
#define MAX_RTR_SOLICITATION_DELAY HZ
|
|
|
|
#define ND_REACHABLE_TIME (30*HZ)
|
|
#define ND_RETRANS_TIMER HZ
|
|
|
|
#define ND_MIN_RANDOM_FACTOR (1/2)
|
|
#define ND_MAX_RANDOM_FACTOR (3/2)
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/skbuff.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/icmpv6.h>
|
|
#include <net/neighbour.h>
|
|
#include <asm/atomic.h>
|
|
|
|
extern struct neigh_table nd_tbl;
|
|
|
|
struct nd_msg {
|
|
struct icmp6hdr icmph;
|
|
struct in6_addr target;
|
|
__u8 opt[0];
|
|
};
|
|
|
|
struct rs_msg {
|
|
struct icmp6hdr icmph;
|
|
__u8 opt[0];
|
|
};
|
|
|
|
struct ra_msg {
|
|
struct icmp6hdr icmph;
|
|
__u32 reachable_time;
|
|
__u32 retrans_timer;
|
|
};
|
|
|
|
struct nd_opt_hdr {
|
|
__u8 nd_opt_type;
|
|
__u8 nd_opt_len;
|
|
} __attribute__((__packed__));
|
|
|
|
|
|
extern int ndisc_init(struct net_proto_family *ops);
|
|
|
|
extern void ndisc_cleanup(void);
|
|
|
|
extern int ndisc_rcv(struct sk_buff *skb);
|
|
|
|
extern void ndisc_send_ns(struct net_device *dev,
|
|
struct neighbour *neigh,
|
|
struct in6_addr *solicit,
|
|
struct in6_addr *daddr,
|
|
struct in6_addr *saddr);
|
|
|
|
extern void ndisc_send_rs(struct net_device *dev,
|
|
struct in6_addr *saddr,
|
|
struct in6_addr *daddr);
|
|
|
|
extern void ndisc_forwarding_on(void);
|
|
extern void ndisc_forwarding_off(void);
|
|
|
|
extern void ndisc_send_redirect(struct sk_buff *skb,
|
|
struct neighbour *neigh,
|
|
struct in6_addr *target);
|
|
|
|
extern int ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir);
|
|
|
|
|
|
struct rt6_info * dflt_rt_lookup(void);
|
|
|
|
/*
|
|
* IGMP
|
|
*/
|
|
extern int igmp6_init(struct net_proto_family *ops);
|
|
|
|
extern void igmp6_cleanup(void);
|
|
|
|
extern int igmp6_event_query(struct sk_buff *skb);
|
|
|
|
extern int igmp6_event_report(struct sk_buff *skb);
|
|
|
|
extern void igmp6_cleanup(void);
|
|
|
|
#ifdef CONFIG_SYSCTL
|
|
extern int ndisc_ifinfo_sysctl_change(ctl_table *ctl,
|
|
int write,
|
|
struct file * filp,
|
|
void __user *buffer,
|
|
size_t *lenp,
|
|
loff_t *ppos);
|
|
#endif
|
|
|
|
extern void inet6_ifinfo_notify(int event,
|
|
struct inet6_dev *idev);
|
|
|
|
static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, struct in6_addr *addr)
|
|
{
|
|
|
|
if (dev)
|
|
return __neigh_lookup(&nd_tbl, addr, dev, 1);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
|
|
#endif
|