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Diffstat (limited to 'usr.sbin/ospfd/ospf.h')
| -rw-r--r-- | usr.sbin/ospfd/ospf.h | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/usr.sbin/ospfd/ospf.h b/usr.sbin/ospfd/ospf.h new file mode 100644 index 00000000000..7886ffeee23 --- /dev/null +++ b/usr.sbin/ospfd/ospf.h @@ -0,0 +1,203 @@ +/* $OpenBSD: ospf.h,v 1.1 2005/01/28 14:05:40 claudio Exp $ */ + +/* + * Copyright (c) 2004, 2005 Esben Norby <esben.norby@ericsson.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* OSPF protocol definitions */ + +#ifndef _OSPF_H_ +#define _OSPF_H_ + +#include <netinet/in.h> +#include <stdbool.h> + +/* misc */ +#define OSPF_VERSION 2 +#define IPPROTO_OSPF 89 +#define AllSPFRouters "224.0.0.5" +#define AllDRouters "224.0.0.6" + +#define PACKET_HDR 100 /* XXX used to calculate the IP payload */ + +#define DEFAULT_METRIC 1 +#define MIN_METRIC 1 +#define MAX_METRIC 65535 + +#define DEFAULT_PRIORITY 0 /* XXX force to 0 for now */ +#define MIN_PRIORITY 0 +#define MAX_PRIORITY 255 + +#define DEFAULT_HELLO_INTERVAL 10 +#define MIN_HELLO_INTERVAL 1 +#define MAX_HELLO_INTERVAL 65535 + +#define DEFAULT_RTR_DEAD_TIME 40 +#define MIN_RTR_DEAD_TIME 2 +#define MAX_RTR_DEAD_TIME 2147483647 + +#define DEFAULT_RXMT_INTERVAL 5 +#define MIN_RXMT_INTERVAL 5 +#define MAX_RXMT_INTERVAL 3600 + +#define DEFAULT_TRANSIT_DELAY 1 +#define MIN_TRANSIT_DELAY 1 +#define MAX_TRANSIT_DELAY 3600 + +#define DEFAULT_ADJ_TMOUT 60 /* XXX sane value? */ + +/* OSPF compatibility flags */ +#define OSPF_OPTION_E 0x02 +#define OSPF_OPTION_MC 0x04 +#define OSPF_OPTION_NP 0x08 +#define OSPF_OPTION_EA 0x10 +#define OSPF_OPTION_DC 0x20 + +/* OSPF packet types */ +#define PACKET_TYPE_HELLO 1 +#define PACKET_TYPE_DD 2 +#define PACKET_TYPE_LS_REQUEST 3 +#define PACKET_TYPE_LS_UPDATE 4 +#define PACKET_TYPE_LS_ACK 5 + +/* OSPF auth types */ +#define AUTH_TYPE_NONE 0 +#define AUTH_TYPE_SIMPLE 1 +#define AUTH_TYPE_CRYPT 2 + +#define MIN_AUTHTYPE 0 +#define MAX_AUTHTYPE 2 + +/* LSA */ +#define LS_REFRESH_TIME 1800 +#define MIN_LS_INTERVAL 5 +#define MIN_LS_ARRIVAL 1 +#define DEFAULT_AGE 0 +#define MAX_AGE 3600 +#define CHECK_AGE 300 +#define MAX_AGE_DIFF 900 +#define LS_INFINITY 0xffffff +#define INIT_SEQ_NUM 0x80000001 +#define MAX_SEQ_NUM 0x7fffffff + +/* OSPF header */ +struct ospf_hdr { + u_int8_t version; + u_int8_t type; + u_int16_t len; + u_int32_t rtr_id; + u_int32_t area_id; + u_int16_t chksum; + u_int16_t auth_type; + union { + char simple[8]; + u_int64_t crypt; + } auth_key; +}; + +/* Hello header (type 1) */ +struct hello_hdr { + u_int32_t mask; + u_int16_t hello_interval; + u_int8_t opts; + u_int8_t rtr_priority; + u_int32_t rtr_dead_interval; + u_int32_t d_rtr; + u_int32_t bd_rtr; +}; + +/* Database Description header (type 2) */ +struct db_dscrp_hdr { + u_int16_t iface_mtu; + u_int8_t opts; + u_int8_t bits; + u_int32_t dd_seq_num; +}; + +#define OSPF_DBD_MS 0x01 +#define OSPF_DBD_M 0x02 +#define OSPF_DBD_I 0x04 + +/* Link State Request header (type 3) */ +struct ls_req_hdr { + u_int32_t type; + u_int32_t ls_id; + u_int32_t adv_rtr; +}; + +/* Link State Update header (type 4) */ +struct ls_upd_hdr { + u_int32_t num_lsa; +}; + +#define LSA_TYPE_ROUTER 1 +#define LSA_TYPE_NETWORK 2 +#define LSA_TYPE_SUM_NETWORK 3 +#define LSA_TYPE_SUM_ROUTER 4 +#define LSA_TYPE_EXTERNAL 5 + +#define LINK_TYPE_POINTTOPOINT 1 +#define LINK_TYPE_TRANSIT_NET 2 +#define LINK_TYPE_STUB_NET 3 +#define LINK_TYPE_VIRTUAL 4 + +/* LSA headers */ +struct lsa_rtr { + u_int8_t flags; + u_int8_t dummy; + u_int16_t nlinks; +}; + +struct lsa_rtr_link { + u_int32_t id; + u_int32_t data; + u_int8_t type; + u_int8_t num_tos; + u_int16_t metric; +}; + +struct lsa_net { + u_int32_t mask; + u_int32_t att_rtr[1]; +}; + +struct lsa_sum { + u_int32_t mask; + u_int32_t metric; /* only lower 24 bit */ +}; + +struct lsa_hdr { + u_int16_t age; + u_int8_t opts; + u_int8_t type; + u_int32_t ls_id; + u_int32_t adv_rtr; + int32_t seq_num; + u_int16_t ls_chksum; + u_int16_t len; +}; + +#define LS_CKSUM_OFFSET ((u_int16_t)(&((struct lsa_hdr *)0)->ls_chksum)) + +struct lsa { + struct lsa_hdr hdr; + union { + struct lsa_rtr rtr; + struct lsa_net net; + struct lsa_sum sum; + } data; +}; + +#endif /* !_OSPF_H_ */ |