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bird/proto/rip/rip.h
Ondrej Zajicek 6abc22f4b0 Merge commit '6ac4f87a2d661c739e55a63577e7bccf696c7abd' into integrated
Conflicts:

	lib/socket.h
	proto/ospf/config.Y
	proto/ospf/iface.c
	proto/ospf/ospf.h
	proto/rip/rip.c
	sysdep/bsd/sysio.h
	sysdep/linux/sysio.h
	sysdep/unix/io.c
2013-07-31 16:29:34 +02:00

182 lines
4.0 KiB
C

/*
* Structures for RIP protocol
*
* FIXME: in V6, they insert additional entry whenever next hop differs. Such entry is identified by 0xff in metric.
*/
#include "nest/route.h"
#include "nest/password.h"
#include "nest/locks.h"
#define EA_RIP_TAG EA_CODE(EAP_RIP, 0)
#define EA_RIP_METRIC EA_CODE(EAP_RIP, 1)
#define PACKET_MAX 25
#define PACKET_MD5_MAX 18 /* FIXME */
#define RIP_PORT_V2 520 /* RIPv2 (for IPv4) */
#define RIP_PORT_NG 521 /* RIPng (for IPv6 */
#define IP4_ALL_RIP_ROUTERS ipa_build4(224, 0, 0, 9)
#define IP6_ALL_RIP_ROUTERS ipa_build6(0xff020000, 0, 0, 9)
struct rip_connection {
node n;
int num;
struct proto *proto;
ip_addr addr;
sock *send;
struct rip_interface *rif;
struct fib_iterator iter;
ip_addr daddr;
int dport;
int done;
};
struct rip_packet_heading { /* 4 bytes */
u8 command;
#define RIPCMD_REQUEST 1 /* want info */
#define RIPCMD_RESPONSE 2 /* responding to request */
#define RIPCMD_TRACEON 3 /* turn tracing on */
#define RIPCMD_TRACEOFF 4 /* turn it off */
#define RIPCMD_MAX 5
u8 version;
u16 unused;
};
struct rip_block { /* 20 bytes, for both RIPv2 and RIPng */
u32 data[5];
};
struct rip_block_v2 {
u16 afi; /* 0xffff on first message means this is authentication */
u16 tag;
ip4_addr network;
ip4_addr netmask;
ip4_addr nexthop;
u32 metric;
};
struct rip_block_ng {
ip6_addr network;
u16 tag;
u8 pxlen;
u8 metric;
};
struct rip_block_auth {
u16 mustbeFFFF;
u16 authtype;
u16 packetlen;
u8 keyid;
u8 authlen;
u32 seq;
u32 zero0;
u32 zero1;
};
struct rip_md5_tail { /* 20 bytes */
u16 mustbeFFFF;
u16 mustbe0001;
char md5[16];
};
struct rip_entry {
struct fib_node n;
ip_addr whotoldme;
ip_addr nexthop;
int metric;
u16 tag;
bird_clock_t updated, changed;
int flags;
};
struct rip_packet {
struct rip_packet_heading heading;
struct rip_block block[PACKET_MAX];
};
struct rip_interface {
node n;
struct proto *proto;
struct iface *iface;
sock *sock;
struct rip_connection *busy;
int metric; /* You don't want to put struct rip_patt *patt here -- think about reconfigure */
int mode;
int check_ttl; /* Check incoming packets for TTL 255 */
int triggered;
struct object_lock *lock;
int multicast;
};
struct rip_patt {
struct iface_patt i;
int metric; /* If you add entries here, don't forget to modify patt_compare! */
int mode;
#define IM_BROADCAST 2
#define IM_QUIET 4
#define IM_NOLISTEN 8
#define IM_VERSION1 16
int tx_tos;
int tx_priority;
int ttl_security; /* bool + 2 for TX only (send, but do not check on RX) */
};
struct rip_proto_config {
struct proto_config c;
list iface_list; /* Patterns configured -- keep it first; see rip_reconfigure why */
list *passwords; /* Passwords, keep second */
int infinity; /* User configurable data; must be comparable with memcmp */
int port;
int period;
int garbage_time;
int timeout_time;
int authtype;
#define AT_NONE 0
#define AT_PLAINTEXT 2
#define AT_MD5 3
int honor;
#define HO_NEVER 0
#define HO_NEIGHBOR 1
#define HO_ALWAYS 2
};
struct rip_proto {
struct proto inherited;
timer *timer;
list connections;
struct fib rtable;
list garbage;
list interfaces; /* Interfaces we really know about */
#ifdef LOCAL_DEBUG
int magic;
#endif
int tx_count; /* Do one regular update once in a while */
int rnd_count; /* Randomize sending time */
};
#ifdef LOCAL_DEBUG
#define RIP_MAGIC 81861253
#define CHK_MAGIC do { if (P->magic != RIP_MAGIC) bug( "Not enough magic" ); } while (0)
#else
#define CHK_MAGIC do { } while (0)
#endif
void rip_init_instance(struct proto *p);
void rip_init_config(struct rip_proto_config *c);
/* Authentication functions */
int rip_incoming_authentication( struct proto *p, struct rip_block_auth *block, struct rip_packet *packet, int num, ip_addr whotoldme );
int rip_outgoing_authentication( struct proto *p, struct rip_block_auth *block, struct rip_packet *packet, int num );