/* * Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that: (1) source code distributions * retain the above copyright notice and this paragraph in its entirety, (2) * distributions including binary code include the above copyright notice and * this paragraph in its entirety in the documentation or other materials * provided with the distribution, and (3) all advertising materials mentioning * features or use of this software display the following acknowledgement: * ``This product includes software developed by the University of California, * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of * the University nor the names of its contributors may be used to endorse * or promote products derived from this software without specific prior * written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. * * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu) */ #define OSPF_TYPE_HELLO 1 /* Hello */ #define OSPF_TYPE_DD 2 /* Database Description */ #define OSPF_TYPE_LS_REQ 3 /* Link State Request */ #define OSPF_TYPE_LS_UPDATE 4 /* Link State Update */ #define OSPF_TYPE_LS_ACK 5 /* Link State Ack */ /* Options field * * +------------------------------------+ * | DN | O | DC | L | N/P | MC | E | T | * +------------------------------------+ * */ #define OSPF_OPTION_MT 0x01 /* MT bit: multi-topology */ #define OSPF_OPTION_E 0x02 /* E bit: External routes advertised */ #define OSPF_OPTION_MC 0x04 /* MC bit: Multicast capable */ #define OSPF_OPTION_NP 0x08 /* N/P bit: NSSA capable */ #define OSPF_OPTION_L 0x10 /* L bit: Packet contains LLS data block */ #define OSPF_OPTION_DC 0x20 /* DC bit: Demand circuit capable */ #define OSPF_OPTION_O 0x40 /* O bit: Opaque LSA capable */ #define OSPF_OPTION_DN 0x80 /* DN bit: Up/Down Bit capable - draft-ietf-ospf-2547-dnbit-04 */ /* ospf_authtype */ #define OSPF_AUTH_NONE 0 /* No auth-data */ #define OSPF_AUTH_SIMPLE 1 /* Simple password */ #define OSPF_AUTH_SIMPLE_LEN 8 /* max length of simple authentication */ #define OSPF_AUTH_MD5 2 /* MD5 authentication */ #define OSPF_AUTH_MD5_LEN 16 /* length of MD5 authentication */ /* db_flags */ #define OSPF_DB_INIT 0x04 #define OSPF_DB_MORE 0x02 #define OSPF_DB_MASTER 0x01 #define OSPF_DB_RESYNC 0x08 /* RFC4811 */ /* ls_type */ #define LS_TYPE_ROUTER 1 /* router link */ #define LS_TYPE_NETWORK 2 /* network link */ #define LS_TYPE_SUM_IP 3 /* summary link */ #define LS_TYPE_SUM_ABR 4 /* summary area link */ #define LS_TYPE_ASE 5 /* ASE */ #define LS_TYPE_GROUP 6 /* Group membership (multicast */ /* extensions 23 July 1991) */ #define LS_TYPE_NSSA 7 /* rfc3101 - Not so Stubby Areas */ #define LS_TYPE_OPAQUE_LL 9 /* rfc2370 - Opaque Link Local */ #define LS_TYPE_OPAQUE_AL 10 /* rfc2370 - Opaque Link Local */ #define LS_TYPE_OPAQUE_DW 11 /* rfc2370 - Opaque Domain Wide */ #define LS_OPAQUE_TYPE_TE 1 /* rfc3630 */ #define LS_OPAQUE_TYPE_GRACE 3 /* rfc3623 */ #define LS_OPAQUE_TYPE_RI 4 /* rfc7770 */ #define LS_OPAQUE_TYPE_EP 7 /* rfc7684 */ #define LS_OPAQUE_TYPE_EL 8 /* rfc7684 */ #define LS_OPAQUE_TE_TLV_ROUTER 1 /* rfc3630 */ #define LS_OPAQUE_TE_TLV_LINK 2 /* rfc3630 */ #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE 1 /* rfc3630 */ #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID 2 /* rfc3630 */ #define LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP 3 /* rfc3630 */ #define LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP 4 /* rfc3630 */ #define LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC 5 /* rfc3630 */ #define LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW 6 /* rfc3630 */ #define LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW 7 /* rfc3630 */ #define LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW 8 /* rfc3630 */ #define LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP 9 /* rfc3630 */ #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID 11 /* rfc4203 */ #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE 14 /* rfc4203 */ #define LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR 15 /* rfc4203 */ #define LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP 16 /* rfc4203 */ #define LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS 17 /* rfc4124 */ #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP 1 /* rfc3630 */ #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA 2 /* rfc3630 */ #define LS_OPAQUE_RI_SUBTLV_SID_LABEL 1 /* rfc8665 */ #define LS_OPAQUE_EP_EXTD_PREFIX_TLV 1 /* rfc7684 */ #define LS_OPAQUE_EP_EXTD_PREFIX_RANGE_TLV 2 /* rfc8665 */ #define LS_OPAQUE_EP_SUBTLV_PREFIX_SID 2 /* rfc8665 */ #define LS_OPAQUE_GRACE_TLV_PERIOD 1 /* rfc3623 */ #define LS_OPAQUE_GRACE_TLV_REASON 2 /* rfc3623 */ #define LS_OPAQUE_GRACE_TLV_INT_ADDRESS 3 /* rfc3623 */ #define LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN 0 /* rfc3623 */ #define LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART 1 /* rfc3623 */ #define LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE 2 /* rfc3623 */ #define LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH 3 /* rfc3623 */ #define LS_OPAQUE_RI_TLV_CAP 1 /* rfc7770 */ #define LS_OPAQUE_RI_TLV_HOSTNAME 7 /* rfc5642 */ #define LS_OPAQUE_RI_TLV_SR_ALGO 8 /* rfc8865 */ #define LS_OPAQUE_RI_TLV_SID_LABEL_RANGE 9 /* rfc8865 */ #define LS_OPAQUE_RI_TLV_SR_LOCAL_BLOCK 14 /* rfc8865 */ #define LS_OPAQUE_RI_TLV_SRMS_PREFERENCE 15 /* rfc8865 */ /* rla_link.link_type */ #define RLA_TYPE_ROUTER 1 /* point-to-point to another router */ #define RLA_TYPE_TRANSIT 2 /* connection to transit network */ #define RLA_TYPE_STUB 3 /* connection to stub network */ #define RLA_TYPE_VIRTUAL 4 /* virtual link */ /* rla_flags */ #define RLA_FLAG_B 0x01 #define RLA_FLAG_E 0x02 #define RLA_FLAG_V 0x04 #define RLA_FLAG_W 0x08 #define RLA_FLAG_NT 0x10 /* RFC3101 Appendix B */ #define RLA_FLAG_H 0x80 /* sla_tosmetric breakdown */ #define SLA_MASK_TOS 0x7f000000 #define SLA_MASK_METRIC 0x00ffffff #define SLA_SHIFT_TOS 24 /* asla_tosmetric breakdown */ #define ASLA_FLAG_EXTERNAL 0x80000000 #define ASLA_MASK_TOS 0x7f000000 #define ASLA_SHIFT_TOS 24 #define ASLA_MASK_METRIC 0x00ffffff /* multicast vertex type */ #define MCLA_VERTEX_ROUTER 1 #define MCLA_VERTEX_NETWORK 2 /* Link-Local-Signaling */ #define OSPF_LLS_HDRLEN 4U /* RFC5613 Section 2.2 */ #define OSPF_LLS_EO 1 /* RFC4811, RFC4812 */ #define OSPF_LLS_MD5 2 /* RFC4813 */ #define OSPF_LLS_EO_LR 0x00000001 /* RFC4811 */ #define OSPF_LLS_EO_RS 0x00000002 /* RFC4812 */ /* * TOS metric struct (will be 0 or more in router links update) */ struct tos_metric { nd_uint8_t tos_type; nd_uint8_t reserved; nd_uint16_t tos_metric; }; struct tos_link { nd_uint8_t link_type; nd_uint8_t link_tos_count; nd_uint16_t tos_metric; }; union un_tos { struct tos_link link; struct tos_metric metrics; }; /* link state advertisement header */ struct lsa_hdr { nd_uint16_t ls_age; nd_uint8_t ls_options; nd_uint8_t ls_type; union { nd_ipv4 lsa_id; struct { /* opaque LSAs change the LSA-ID field */ nd_uint8_t opaque_type; nd_uint24_t opaque_id; } opaque_field; } un_lsa_id; nd_ipv4 ls_router; nd_uint32_t ls_seq; nd_uint16_t ls_chksum; nd_uint16_t ls_length; }; /* link state advertisement */ struct lsa { struct lsa_hdr ls_hdr; /* Link state types */ union { /* Router links advertisements */ struct { nd_uint8_t rla_flags; nd_byte rla_zero; nd_uint16_t rla_count; struct rlalink { nd_ipv4 link_id; nd_ipv4 link_data; union un_tos un_tos; } rla_link[1]; /* may repeat */ } un_rla; /* Network links advertisements */ struct { nd_ipv4 nla_mask; nd_ipv4 nla_router[1]; /* may repeat */ } un_nla; /* Summary links advertisements */ struct { nd_ipv4 sla_mask; nd_uint32_t sla_tosmetric[1]; /* may repeat */ } un_sla; /* AS external links advertisements */ struct { nd_ipv4 asla_mask; struct aslametric { nd_uint32_t asla_tosmetric; nd_ipv4 asla_forward; nd_ipv4 asla_tag; } asla_metric[1]; /* may repeat */ } un_asla; /* Multicast group membership */ struct mcla { nd_uint32_t mcla_vtype; nd_ipv4 mcla_vid; } un_mcla[1]; /* Opaque TE LSA */ struct { nd_uint16_t type; nd_uint16_t length; nd_byte data[1]; /* may repeat */ } un_te_lsa_tlv[1]; /* may repeat */ /* Opaque Grace LSA */ struct { nd_uint16_t type; nd_uint16_t length; nd_byte data[1]; /* may repeat */ } un_grace_tlv[1]; /* may repeat */ /* Opaque Router information LSA */ struct { nd_uint16_t type; nd_uint16_t length; nd_byte data[1]; /* may repeat */ } un_ri_tlv[1]; /* may repeat */ /* Extended Prefix LSA */ struct { nd_uint16_t type; nd_uint16_t length; nd_byte data[1]; /* may repeat */ } un_ep_tlv[1]; /* may repeat */ /* Unknown LSA */ struct unknown { nd_byte data[1]; /* may repeat */ } un_unknown[1]; } lsa_un; }; #define OSPF_AUTH_SIZE 8 /* * the main header */ struct ospfhdr { nd_uint8_t ospf_version; nd_uint8_t ospf_type; nd_uint16_t ospf_len; nd_ipv4 ospf_routerid; nd_ipv4 ospf_areaid; nd_uint16_t ospf_chksum; nd_uint16_t ospf_authtype; nd_byte ospf_authdata[OSPF_AUTH_SIZE]; union { /* Hello packet */ struct { nd_ipv4 hello_mask; nd_uint16_t hello_helloint; nd_uint8_t hello_options; nd_uint8_t hello_priority; nd_uint32_t hello_deadint; nd_ipv4 hello_dr; nd_ipv4 hello_bdr; nd_ipv4 hello_neighbor[1]; /* may repeat */ } un_hello; /* Database Description packet */ struct { nd_uint16_t db_ifmtu; nd_uint8_t db_options; nd_uint8_t db_flags; nd_uint32_t db_seq; struct lsa_hdr db_lshdr[1]; /* may repeat */ } un_db; /* Link State Request */ struct lsr { nd_uint32_t ls_type; union { nd_ipv4 ls_stateid; struct { /* opaque LSAs change the LSA-ID field */ nd_uint8_t opaque_type; nd_uint24_t opaque_id; } opaque_field; } un_ls_stateid; nd_ipv4 ls_router; } un_lsr[1]; /* may repeat */ /* Link State Update */ struct { nd_uint32_t lsu_count; struct lsa lsu_lsa[1]; /* may repeat */ } un_lsu; /* Link State Acknowledgement */ struct { struct lsa_hdr lsa_lshdr[1]; /* may repeat */ } un_lsa ; } ospf_un ; }; #define ospf_hello ospf_un.un_hello #define ospf_db ospf_un.un_db #define ospf_lsr ospf_un.un_lsr #define ospf_lsu ospf_un.un_lsu #define ospf_lsa ospf_un.un_lsa