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Sourcecode: tcpdump version File versions

ospf.h

/* @(#) $Header: /tcpdump/master/tcpdump/ospf.h,v 1.11 2003/10/22 17:08:46 hannes Exp $ (LBL) */
/*
 * 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_UMD           0     /* UMd's special monitoring packets */
#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
 *
 * +------------------------------------+
 * | * | O | DC | EA | N/P | MC | E | T |
 * +------------------------------------+
 *
 */
                
#define OSPF_OPTION_T   0x01  /* T bit: TOS support   */
#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_EA    0x10  /* EA bit: External Attribute capable */
#define     OSPF_OPTION_DC    0x20  /* DC bit: Demand circuit capable */
#define     OSPF_OPTION_O     0x40  /* O bit: Opaque LSA capable */

/* ospf_authtype  */
#define     OSPF_AUTH_NONE          0     /* No auth-data */
#define     OSPF_AUTH_SIMPLE  1     /* Simple password */
#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

/* 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   /* rfc1587 - 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   /* draft-ietf-ospf-hitless-restart */

#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 /* draft-ietf-ccamp-ospf-gmpls-extensions */
#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE 14 /* draft-ietf-ccamp-ospf-gmpls-extensions */
#define LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR    15 /* draft-ietf-ccamp-ospf-gmpls-extensions */
#define LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP    16 /* draft-ietf-ccamp-ospf-gmpls-extensions */

#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP        1  /* rfc3630 */
#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA         2  /* rfc3630 */

/*************************************************
 *
 * is the above a bug in the documentation?
 *
 *************************************************/


/* 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_W1 0x04
#define     RLA_FLAG_W2 0x08

/* 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 state advertisement header */
struct lsa_hdr {
    u_int16_t ls_age;
    u_int8_t ls_options;
    u_int8_t ls_type;
    union {
        struct in_addr lsa_id;
        struct { /* opaque LSAs change the LSA-ID field */
            u_int8_t opaque_type;
            u_int8_t opaque_id[3];
      } opaque_field;
    } un_lsa_id;
    struct in_addr ls_router;
    u_int32_t ls_seq;
    u_int16_t ls_chksum;
    u_int16_t ls_length;
};

/* link state advertisement */
struct lsa {
    struct lsa_hdr ls_hdr;

    /* Link state types */
    union {
      /* Router links advertisements */
      struct {
          u_int8_t rla_flags;
          u_int8_t rla_zero[1];
          u_int16_t rla_count;
          struct rlalink {
            struct in_addr link_id;
            struct in_addr link_data;
            u_int8_t link_type;
            u_int8_t link_toscount;
            u_int16_t link_tos0metric;
          } rla_link[1];            /* may repeat     */
      } un_rla;

      /* Network links advertisements */
      struct {
          struct in_addr nla_mask;
          struct in_addr nla_router[1];   /* may repeat     */
      } un_nla;

      /* Summary links advertisements */
      struct {
          struct in_addr sla_mask;
          u_int32_t sla_tosmetric[1];     /* may repeat     */
      } un_sla;

      /* AS external links advertisements */
      struct {
          struct in_addr asla_mask;
          struct aslametric {
            u_int32_t asla_tosmetric;
            struct in_addr asla_forward;
            struct in_addr asla_tag;
          } asla_metric[1];         /* may repeat     */
      } un_asla;

      /* Multicast group membership */
      struct mcla {
          u_int32_t mcla_vtype;
          struct in_addr mcla_vid;
      } un_mcla[1];

        /* Opaque TE LSA */
        struct {
          u_int16_t type;
          u_int16_t length;
          u_int8_t data[1]; /* may repeat   */
      } un_te_lsa_tlv;

        /* Unknown LSA */
        struct unknown {
          u_int8_t data[1]; /* may repeat   */
      } un_unknown[1];

    } lsa_un;
};


/*
 * TOS metric struct (will be 0 or more in router links update)
 */
struct tos_metric {
    u_int8_t tos_type;
    u_int8_t tos_zero;
    u_int16_t tos_metric;
};

#define     OSPF_AUTH_SIZE    8

/*
 * the main header
 */
struct ospfhdr {
    u_int8_t ospf_version;
    u_int8_t ospf_type;
    u_int16_t ospf_len;
    struct in_addr ospf_routerid;
    struct in_addr ospf_areaid;
    u_int16_t ospf_chksum;
    u_int16_t ospf_authtype;
    u_int8_t ospf_authdata[OSPF_AUTH_SIZE];
    union {

      /* Hello packet */
      struct {
          struct in_addr hello_mask;
          u_int16_t hello_helloint;
          u_int8_t hello_options;
          u_int8_t hello_priority;
          u_int32_t hello_deadint;
          struct in_addr hello_dr;
          struct in_addr hello_bdr;
          struct in_addr hello_neighbor[1]; /* may repeat   */
      } un_hello;

      /* Database Description packet */
      struct {
          u_int8_t db_zero[2];
          u_int8_t db_options;
          u_int8_t db_flags;
          u_int32_t db_seq;
          struct lsa_hdr db_lshdr[1]; /* may repeat   */
      } un_db;

      /* Link State Request */
      struct lsr {
          u_int8_t ls_type[4];
            union {
                struct in_addr ls_stateid;
                struct { /* opaque LSAs change the LSA-ID field */
                    u_int8_t opaque_type;
                    u_int8_t opaque_id[3];
                } opaque_field;
            } un_ls_stateid;
          struct in_addr ls_router;
      } un_lsr[1];            /* may repeat     */

      /* Link State Update */
      struct {
          u_int32_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


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