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