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/*
* BIRD -- Router Advertisement
*
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _BIRD_RADV_H_
#define _BIRD_RADV_H_
#include "nest/bird.h"
#include "lib/ip.h"
#include "lib/lists.h"
#include "lib/socket.h"
#include "lib/timer.h"
#include "lib/resource.h"
#include "nest/protocol.h"
#include "nest/iface.h"
#include "nest/route.h"
#include "nest/cli.h"
#include "nest/locks.h"
#include "conf/conf.h"
#include "lib/string.h"
#define ICMPV6_PROTO 58
#define AllNodes _MI(0xFF020000, 0, 0, 1) /* FF02::1 */
#define AllRouters _MI(0xFF020000, 0, 0, 2) /* FF02::2 */
#define ICMPV6_RS 133
#define ICMPV6_RA 134
#define MAX_INITIAL_RTR_ADVERTISEMENTS 3
#define MAX_INITIAL_RTR_ADVERT_INTERVAL 16
#define DEFAULT_MAX_RA_INT 600
#define DEFAULT_MIN_DELAY 3
#define DEFAULT_CURRENT_HOP_LIMIT 64
#define DEFAULT_VALID_LIFETIME 86400
#define DEFAULT_PREFERRED_LIFETIME 14400
struct radv_config
{
struct proto_config c;
list patt_list; /* List of iface configs */
list pref_list; /* Global list of prefix configs */
};
struct radv_iface_config
{
struct iface_patt i;
list pref_list; /* Local list of prefix configs */
u32 min_ra_int; /* Standard options from RFC 4261 */
u32 max_ra_int;
u32 min_delay;
u8 managed;
u8 other_config;
u32 link_mtu;
u32 reachable_time;
u32 retrans_timer;
u32 current_hop_limit;
u32 default_lifetime;
};
struct radv_prefix_config
{
node n;
ip_addr prefix;
int pxlen;
u8 skip; /* Do not include this prefix to RA */
u8 onlink; /* Standard options from RFC 4261 */
u8 autonomous;
u32 valid_lifetime;
u32 preferred_lifetime;
};
struct proto_radv
{
struct proto p;
list iface_list; /* List of active ifaces */
};
struct radv_iface
{
node n;
struct proto_radv *ra;
struct radv_iface_config *cf; /* Related config, must be updated in reconfigure */
struct iface *iface;
struct ifa *addr; /* Link-local address of iface */
timer *timer;
struct object_lock *lock;
sock *sk;
bird_clock_t last; /* Time of last sending of RA */
u16 plen; /* Length of prepared RA in tbuf, or 0 if not valid */
byte initial; /* List of active ifaces */
};
#define RA_EV_INIT 1 /* Switch to initial mode */
#define RA_EV_CHANGE 2 /* Change of options or prefixes */
#define RA_EV_RS 3 /* Received RS */
#ifdef LOCAL_DEBUG
#define RADV_FORCE_DEBUG 1
#else
#define RADV_FORCE_DEBUG 0
#endif
#define RADV_TRACE(flags, msg, args...) do { if ((ra->p.debug & flags) || RADV_FORCE_DEBUG) \
log(L_TRACE "%s: " msg, ra->p.name , ## args ); } while(0)
/* radv.c */
void radv_iface_notify(struct radv_iface *ifa, int event);
/* packets.c */
void radv_send_ra(struct radv_iface *ifa, int shutdown);
int radv_sk_open(struct radv_iface *ifa);
#endif /* _BIRD_RADV_H_ */
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