Implements Router Advertisement protocol.

1 files changed, 131 insertions, 0 deletions

diff --git a/proto/radv/radv.h b/proto/radv/radv.h
new file mode 100644
index 00000000..fe121f26
--- /dev/null
+++ b/proto/radv/radv.h
@@ -0,0 +1,131 @@
+/*
+ *	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_ */