1998-07-09 19:39:04 +00:00
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/*
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* Structures for RIP protocol
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1999-10-11 14:19:29 +00:00
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*
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2012-06-25 00:56:09 +00:00
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* FIXME: in V6, they insert additional entry whenever next hop differs. Such entry is identified by 0xff in metric.
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1998-07-09 19:39:04 +00:00
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*/
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1998-12-22 19:41:04 +00:00
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#include "nest/route.h"
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1999-05-26 14:37:47 +00:00
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#include "nest/password.h"
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2000-03-22 14:26:03 +00:00
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#include "nest/locks.h"
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1998-12-22 19:41:04 +00:00
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1999-05-31 19:16:22 +00:00
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#define EA_RIP_TAG EA_CODE(EAP_RIP, 0)
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#define EA_RIP_METRIC EA_CODE(EAP_RIP, 1)
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2012-03-15 11:38:08 +00:00
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#define PACKET_MAX 25
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#define PACKET_MD5_MAX 18 /* FIXME */
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2012-06-25 00:56:09 +00:00
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#define RIP_PORT_V2 520 /* RIPv2 (for IPv4) */
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#define RIP_PORT_NG 521 /* RIPng (for IPv6 */
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2012-03-15 11:38:08 +00:00
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2012-06-25 00:56:09 +00:00
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#define IP4_ALL_RIP_ROUTERS ipa_build4(224, 0, 0, 9)
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#define IP6_ALL_RIP_ROUTERS ipa_build6(0xff020000, 0, 0, 9)
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2012-03-15 11:38:08 +00:00
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1999-08-18 13:19:33 +00:00
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1998-07-09 19:39:04 +00:00
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struct rip_connection {
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1998-07-28 21:44:11 +00:00
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node n;
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int num;
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struct proto *proto;
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1998-07-09 19:39:04 +00:00
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ip_addr addr;
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sock *send;
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1998-10-26 15:35:19 +00:00
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struct rip_interface *rif;
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1998-12-22 19:41:04 +00:00
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struct fib_iterator iter;
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1998-10-26 15:35:19 +00:00
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ip_addr daddr;
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int dport;
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1998-12-22 19:41:04 +00:00
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int done;
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1998-07-09 19:39:04 +00:00
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};
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1999-11-25 15:03:12 +00:00
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struct rip_packet_heading { /* 4 bytes */
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1998-07-09 19:39:04 +00:00
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u8 command;
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1998-07-28 21:44:11 +00:00
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#define RIPCMD_REQUEST 1 /* want info */
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#define RIPCMD_RESPONSE 2 /* responding to request */
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#define RIPCMD_TRACEON 3 /* turn tracing on */
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#define RIPCMD_TRACEOFF 4 /* turn it off */
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#define RIPCMD_MAX 5
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1998-07-09 19:39:04 +00:00
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u8 version;
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u16 unused;
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};
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2012-06-25 00:56:09 +00:00
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struct rip_block { /* 20 bytes, for both RIPv2 and RIPng */
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u32 data[5];
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};
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struct rip_block_v2 {
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u16 afi; /* 0xffff on first message means this is authentication */
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1998-07-09 19:39:04 +00:00
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u16 tag;
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2012-06-25 00:56:09 +00:00
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ip4_addr network;
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ip4_addr netmask;
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ip4_addr nexthop;
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1998-07-09 19:39:04 +00:00
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u32 metric;
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};
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2012-06-25 00:56:09 +00:00
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struct rip_block_ng {
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ip6_addr network;
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1999-10-11 14:19:29 +00:00
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u16 tag;
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u8 pxlen;
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1999-12-16 13:14:32 +00:00
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u8 metric;
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1999-10-11 14:19:29 +00:00
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};
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1998-07-09 19:39:04 +00:00
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2012-06-25 00:56:09 +00:00
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struct rip_block_auth {
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1999-05-31 17:12:38 +00:00
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u16 mustbeFFFF;
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u16 authtype;
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u16 packetlen;
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u8 keyid;
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u8 authlen;
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u32 seq;
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u32 zero0;
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u32 zero1;
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};
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1999-11-25 14:54:08 +00:00
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struct rip_md5_tail { /* 20 bytes */
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1999-05-31 19:16:22 +00:00
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u16 mustbeFFFF;
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u16 mustbe0001;
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char md5[16];
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};
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1998-07-09 19:39:04 +00:00
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struct rip_entry {
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1998-12-22 19:41:04 +00:00
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struct fib_node n;
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1998-07-09 19:39:04 +00:00
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1998-10-07 19:33:50 +00:00
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ip_addr whotoldme;
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1998-07-09 19:39:04 +00:00
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ip_addr nexthop;
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int metric;
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u16 tag;
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bird_clock_t updated, changed;
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1998-10-07 19:33:50 +00:00
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int flags;
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1998-07-09 19:39:04 +00:00
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};
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struct rip_packet {
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struct rip_packet_heading heading;
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2000-04-26 11:07:57 +00:00
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struct rip_block block[PACKET_MAX];
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1998-07-09 19:39:04 +00:00
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};
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1998-10-26 15:35:19 +00:00
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struct rip_interface {
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node n;
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struct proto *proto;
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struct iface *iface;
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sock *sock;
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struct rip_connection *busy;
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2000-05-10 13:23:21 +00:00
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int metric; /* You don't want to put struct rip_patt *patt here -- think about reconfigure */
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int mode;
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1999-11-25 13:38:25 +00:00
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int triggered;
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2000-03-22 14:26:03 +00:00
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struct object_lock *lock;
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2000-03-26 18:01:27 +00:00
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int multicast;
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1999-01-12 16:40:55 +00:00
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};
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struct rip_patt {
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struct iface_patt i;
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2000-05-16 14:58:06 +00:00
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int metric; /* If you add entries here, don't forget to modify patt_compare! */
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1999-01-12 16:40:55 +00:00
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int mode;
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1999-05-31 19:43:08 +00:00
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#define IM_BROADCAST 2
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#define IM_QUIET 4
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#define IM_NOLISTEN 8
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#define IM_VERSION1 16
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1998-10-26 15:35:19 +00:00
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};
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1999-02-15 13:34:43 +00:00
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struct rip_proto_config {
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1999-03-01 21:18:01 +00:00
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struct proto_config c;
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2000-05-10 13:05:39 +00:00
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list iface_list; /* Patterns configured -- keep it first; see rip_reconfigure why */
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2004-06-26 20:11:14 +00:00
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list *passwords; /* Passwords, keep second */
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1999-02-15 13:34:43 +00:00
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2000-05-16 14:58:06 +00:00
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int infinity; /* User configurable data; must be comparable with memcmp */
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1999-02-15 13:34:43 +00:00
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int port;
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int period;
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int garbage_time;
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1999-11-10 11:52:36 +00:00
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int timeout_time;
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1999-05-11 09:53:45 +00:00
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int authtype;
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#define AT_NONE 0
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#define AT_PLAINTEXT 2
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1999-05-31 17:12:38 +00:00
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#define AT_MD5 3
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2000-05-04 20:08:34 +00:00
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int honor;
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1999-08-18 13:19:33 +00:00
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#define HO_NEVER 0
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2000-05-04 20:08:34 +00:00
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#define HO_NEIGHBOR 1
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1999-08-18 13:19:33 +00:00
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#define HO_ALWAYS 2
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1999-02-15 13:34:43 +00:00
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};
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1998-12-04 11:45:51 +00:00
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struct rip_proto {
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1998-07-09 19:39:04 +00:00
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struct proto inherited;
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timer *timer;
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list connections;
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1998-12-22 19:41:04 +00:00
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struct fib rtable;
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1998-10-20 16:12:43 +00:00
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list garbage;
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1998-12-04 11:45:51 +00:00
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list interfaces; /* Interfaces we really know about */
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2004-06-23 21:34:26 +00:00
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#ifdef LOCAL_DEBUG
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1998-07-09 19:39:04 +00:00
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int magic;
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2004-06-23 21:34:26 +00:00
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#endif
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1999-11-25 13:38:25 +00:00
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int tx_count; /* Do one regular update once in a while */
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1998-07-09 19:39:04 +00:00
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};
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2004-06-23 21:34:26 +00:00
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#ifdef LOCAL_DEBUG
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1998-07-09 19:39:04 +00:00
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#define RIP_MAGIC 81861253
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2000-06-04 19:56:06 +00:00
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#define CHK_MAGIC do { if (P->magic != RIP_MAGIC) bug( "Not enough magic" ); } while (0)
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2004-06-23 21:34:26 +00:00
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#else
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#define CHK_MAGIC do { } while (0)
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#endif
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1998-11-27 21:08:37 +00:00
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void rip_init_instance(struct proto *p);
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1999-03-01 21:18:01 +00:00
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void rip_init_config(struct rip_proto_config *c);
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1999-05-11 09:53:45 +00:00
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/* Authentication functions */
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1999-12-01 12:52:57 +00:00
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int rip_incoming_authentication( struct proto *p, struct rip_block_auth *block, struct rip_packet *packet, int num, ip_addr whotoldme );
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1999-11-25 14:54:08 +00:00
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int rip_outgoing_authentication( struct proto *p, struct rip_block_auth *block, struct rip_packet *packet, int num );
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