ospf_structures.h

vxworks下ospf协议栈

    ULONG                     advertising_router;
    seq_t                     sequence_number;
    USHORT                    checksum;
    USHORT                    length;  /* length of advertisement*/
} OSPF_LS_OPAQUE_HEADER;

typedef _struct OSPF_LS_HEADER
{
    USHORT                    age;
    UNION_OSPF_OPTIONS        options;
    BYTE_ENUM (OSPF_LS_TYPE)  type;    /* Type of advertisement */
    ULONG                     id;      /* Link State Id */
    ULONG                     advertising_router;
    seq_t                     sequence_number;
    USHORT                    checksum;
    USHORT                    length;   /* length of advertisement*/
} OSPF_LS_HEADER;

typedef _struct OSPF_HELLO_HEADER
{
    ULONG               network_mask;    /* network mask associated with this interface */
    USHORT              hello_interval;  /* number of seconds between this router's Hello
                                            packets */
    UNION_OSPF_OPTIONS  options;   /* optional capabilities supported by this router */
    BYTE                router_priority;   /* if set to 0, this router is not eligible to
                                              become designated router */
    ULONG               router_dead_interval;   /* number of seconds before declaring a
                                                   silent router down */
    ULONG               designated_router;   /* identity of the designated router for
                                                this network */
    ULONG               backup_designated_router;  /* identity of the backup designated
                                                      router for this network */
    ULONG               neighbor;    /* IDs of each router from whom valid Hello packets
                                        have been seen recently on this network */
} OSPF_HELLO_HEADER;

typedef _struct OSPF_DATABASE_HEADER
{
    /* RFC 2178 G.9 */
    USHORT              interface_mtu;
    UNION_OSPF_OPTIONS  options;
    UNION_OSPF_FLAGS    flags;
    ULONG               sequence;
    OSPF_LS_HEADER      link_state_advertisement_header;
} _pack OSPF_DATABASE_HEADER;

typedef _struct OSPF_LS_REQUESTED_ADVERTISEMENT
{
    BYTE    reserved_bytes[3];
    BYTE    type;      /* Type of advertisement */
    ULONG   id;        /* Link State Id */
    ULONG   advertising_router;
} _pack OSPF_LS_REQUESTED_ADVERTISEMENT;

typedef _struct OSPF_LS_REQUEST_HEADER
{
    OSPF_LS_REQUESTED_ADVERTISEMENT requested_advertisement;
} _pack OSPF_LS_REQUEST_HEADER;

#if (_BYTE_ORDER == _LITTLE_ENDIAN )
typedef _struct OSPF_ROUTER_LINK_BIT_OPTIONS
{
    BIT_FIELD (enum,BOOLEAN)   bit_B:1;
    BIT_FIELD (enum,BOOLEAN)   bit_E:1;
    BIT_FIELD (enum,BOOLEAN)   bit_V:1;
    BIT_FIELD (enum,BOOLEAN)   not_used:5;
} _pack OSPF_ROUTER_LINK_BIT_OPTIONS;
#else /* _BYTE_ORDER == _BIG_ENDIAN */
typedef _struct OSPF_ROUTER_LINK_BIT_OPTIONS
{
    BIT_FIELD (enum,BOOLEAN)   not_used:5;
    BIT_FIELD (enum,BOOLEAN)   bit_V:1;
    BIT_FIELD (enum,BOOLEAN)   bit_E:1;
    BIT_FIELD (enum,BOOLEAN)   bit_B:1;
} _pack OSPF_ROUTER_LINK_BIT_OPTIONS;
#endif /* _BYTE_ORDER == _LITTLE_ENDIAN */

typedef _union  UNION_OSPF_ROUTER_LINK_BIT_OPTIONS
{
        OSPF_ROUTER_LINK_BIT_OPTIONS    _bit;
        USHORT                                  _ushort;
} _pack UNION_OSPF_ROUTER_LINK_BIT_OPTIONS;

typedef _struct OSPF_ROUTER_LINK_METRIC_PIECE
{
    USHORT  tos;
    USHORT  metric;
} _pack OSPF_ROUTER_LINK_METRIC_PIECE;

typedef _struct OSPF_ROUTER_LINK_PIECE
{
    ULONG                              link_id;
    ULONG                              link_data;
    BYTE_ENUM (OSPF_ROUTER_LINK_TYPE)  type;
    BYTE                               number_of_metrics;
    USHORT                             tos0_metric;
} _pack OSPF_ROUTER_LINK_PIECE;

typedef _struct OSPF_ROUTER_LINK_ADVERTISEMENT_HEADER
{
    OSPF_LS_HEADER                      ls_header;
    UNION_OSPF_ROUTER_LINK_BIT_OPTIONS  bit_options;
    USHORT                              number_of_links;
    OSPF_ROUTER_LINK_PIECE              link;
} OSPF_ROUTER_LINK_ADVERTISEMENT_HEADER;

typedef _struct OSPF_ROUTER_LSA_LINK
{
    _struct OSPF_ROUTER_LSA_LINK       *sptr_forward_link;
    _struct OSPF_ROUTER_LSA_LINK       *sptr_backward_link;
    OSPF_LS_HEADER                     ls_header;
    UNION_OSPF_ROUTER_LINK_BIT_OPTIONS bit_options;
    USHORT                             number_of_links;
    OSPF_ROUTER_LINK_PIECE             link;
} _pack OSPF_ROUTER_LSA_LINK;

typedef _struct OSPF_NETWORK_LINK_PIECE
{
    ULONG   link_id;
} _pack OSPF_NETWORK_LINK_PIECE;

typedef _struct OSPF_NETWORK_LINK_ADVERTISEMENT_HEADER
{
    OSPF_LS_HEADER           ls_header;
    ULONG                    network_mask;
    OSPF_NETWORK_LINK_PIECE  attached_router;
} _pack OSPF_NETWORK_LINK_ADVERTISEMENT_HEADER;

typedef _struct OSPF_NETWORK_LSA_LINK
{
    _struct OSPF_NETWORK_LSA_LINK  *sptr_forward_link;
    _struct OSPF_NETWORK_LSA_LINK  *sptr_backward_link;
    OSPF_LS_HEADER                 ls_header;
    ULONG                          network_mask;
    OSPF_NETWORK_LINK_PIECE        attached_router;
} _pack OSPF_NETWORK_LSA_LINK;


typedef _struct OSPF_SUMMARY_LINK_ADVERTISEMENT_HEADER
{
    OSPF_LS_HEADER  ls_header;
    ULONG           network_mask;
    ULONG           tos0_metric;
} _pack OSPF_SUMMARY_LINK_ADVERTISEMENT_HEADER;

typedef _struct OSPF_SUMMARY_LSA_LINK
{
    _struct OSPF_SUMMARY_LSA_LINK  *sptr_forward_link;
    _struct OSPF_SUMMARY_LSA_LINK  *sptr_backward_link;
    OSPF_LS_HEADER                 ls_header;
    ULONG                          network_mask;
    ULONG                          tos0_metric;
} _pack OSPF_SUMMARY_LSA_LINK;


typedef _struct OSPF_EXTERNAL_LINK_METRIC_PIECE
{
    USHORT  tos;
    USHORT  metric;
    ULONG   forwarding_address;
    ULONG   external_route_tag;
} _pack OSPF_EXTERNAL_LINK_METRIC_PIECE;


typedef _struct OSPF_EXTERNAL_LINK_ADVERTISEMENT_HEADER
{
    OSPF_LS_HEADER  ls_header;
    ULONG           network_mask;
    ULONG           tos0_metric;
    ULONG           tos0_forwarding_address;
    ULONG           tos0_external_route_tag;
} _pack OSPF_EXTERNAL_LINK_ADVERTISEMENT_HEADER;

typedef _struct OSPF_EXTERNAL_LSA_LINK
{
    _struct OSPF_EXTERNAL_LSA_LINK  *sptr_forward_link;
    _struct OSPF_EXTERNAL_LSA_LINK  *sptr_backward_link;
    OSPF_LS_HEADER                  ls_header;
    ULONG                           network_mask;
    ULONG                           tos0_metric;
    ULONG                           tos0_forwarding_address;
    ULONG                           tos0_external_route_tag;
} _pack OSPF_EXTERNAL_LSA_LINK;


typedef _struct OSPF_TYPE_7_LINK_ADVERTISEMENT_HEADER
{
        OSPF_LS_HEADER  ls_header;
        ULONG           network_mask;
        ULONG           tos0_metric;
        ULONG           tos0_forwarding_address;
        ULONG           tos0_external_route_tag;
} _pack OSPF_TYPE_7_LINK_ADVERTISEMENT_HEADER;

typedef _struct OSPF_TYPE_7_LSA_LINK
{
    _struct OSPF_TYPE_7_LSA_LINK  *sptr_forward_link;
    _struct OSPF_TYPE_7_LSA_LINK  *sptr_backward_link;
    OSPF_LS_HEADER                ls_header;
    ULONG                         network_mask;
    ULONG                         tos0_metric;
    ULONG                         tos0_forwarding_address;
    ULONG                         tos0_external_route_tag;
} _pack OSPF_TYPE_7_LSA_LINK;


/*opaque lsa type 9, 10, 11 lsa jkw*/
typedef _struct OSPF_OPAQUE_LSA
{
    OSPF_LS_OPAQUE_HEADER  ls_header;
    void                   *data;
} _pack OSPF_OPAQUE_LSA;

typedef _struct OSPF_TYPE_9_LINK_ADVERTISEMENT_HEADER
{
    OSPF_LS_OPAQUE_HEADER    ls_header;
    void                     *data;
    struct OSPF_INTERFACE    *opaque_interface;
} _pack OSPF_TYPE_9_LINK_ADVERTISEMENT_HEADER;

typedef _struct OSPF_TYPE_9_LSA_LINK
{
    _struct OSPF_TYPE_9_LSA_LINK   *sptr_forward_link;
    _struct OSPF_TYPE_9_LSA_LINK   *sptr_backward_link;
    OSPF_LS_OPAQUE_HEADER          ls_header;
    void                           *data;
    struct OSPF_INTERFACE          *opaque_interface;
} _pack OSPF_TYPE_9_LSA_LINK;

typedef _struct OSPF_TYPE_10_LINK_ADVERTISEMENT_HEADER
{
    OSPF_LS_OPAQUE_HEADER          ls_header;
    void                           *data;
    struct OSPF_AREA_ENTRY         *opaque_area;
} _pack OSPF_TYPE_10_LINK_ADVERTISEMENT_HEADER;

typedef _struct OSPF_TYPE_10_LSA_LINK
{
    _struct OSPF_TYPE_10_LSA_LINK  *sptr_forward_link;
    _struct OSPF_TYPE_10_LSA_LINK  *sptr_backward_link;
    OSPF_LS_OPAQUE_HEADER          ls_header;
    void                           *data;
    struct OSPF_AREA_ENTRY         *opaque_area;
} _pack OSPF_TYPE_10_LSA_LINK;

typedef _struct OSPF_TYPE_11_LINK_ADVERTISEMENT_HEADER
{
    OSPF_LS_OPAQUE_HEADER  ls_header;
    void                   *data;
} _pack OSPF_TYPE_11_LINK_ADVERTISEMENT_HEADER;

typedef _struct OSPF_TYPE_11_LSA_LINK
{
    OSPF_LS_OPAQUE_HEADER          ls_header;
    void                           *data;
    _struct OSPF_TYPE_11_LSA_LINK  *sptr_forward_link;
    _struct OSPF_TYPE_11_LSA_LINK  *sptr_backward_link;
} _pack OSPF_TYPE_11_LSA_LINK;


typedef _union  UNION_OSPF_ADVERTISEMENT_HEADER
{
    OSPF_ROUTER_LINK_ADVERTISEMENT_HEADER   router;
    OSPF_NETWORK_LINK_ADVERTISEMENT_HEADER  network;
    OSPF_SUMMARY_LINK_ADVERTISEMENT_HEADER  summary;
    OSPF_EXTERNAL_LINK_ADVERTISEMENT_HEADER external;
    OSPF_TYPE_7_LINK_ADVERTISEMENT_HEADER type_7;
    /*opaque lsa add new opaque lsa types to union jkw*/
    OSPF_TYPE_9_LINK_ADVERTISEMENT_HEADER type_9;
    OSPF_TYPE_10_LINK_ADVERTISEMENT_HEADER type_10;
    OSPF_TYPE_11_LINK_ADVERTISEMENT_HEADER type_11;
} _pack UNION_OSPF_ADVERTISEMENT_HEADER;

typedef _struct OSPF_LS_UPDATE_HEADER
{
    ULONG                             number_of_advertisements;
    UNION_OSPF_ADVERTISEMENT_HEADER   advertisement_header;
} _pack OSPF_LS_UPDATE_HEADER;

typedef _struct OSPF_LS_ACKNOWLEDGEMENT_HEADER
{
    OSPF_LS_HEADER ls_advertisement_header;
} _pack OSPF_LS_ACKNOWLEDGEMENT_HEADER;

typedef _union  UNION_OSPF_PACKET_TYPES
{
    OSPF_HELLO_HEADER               hello;
    OSPF_DATABASE_HEADER            database;
    OSPF_LS_REQUEST_HEADER          ls_request;
    OSPF_LS_UPDATE_HEADER           ls_update;
    OSPF_LS_ACKNOWLEDGEMENT_HEADER  ls_acknowledgement;
} _pack UNION_OSPF_PACKET_TYPES;

typedef _struct OSPF_HEADER     /* the standard 24 byte header for OSPF (page 178) */