pwospf_protocol.h
pwospf_protocol.h — C header, 2 KB (2223 bytes)
File contents
/*----------------------------------------------------------------------------- * file: pwospf_protocol.h * date: Thu Mar 18 15:14:06 PST 2004 * Author: Martin Casado * * Description: * * Protocol headers for the PWOSPF protocol * *---------------------------------------------------------------------------*/ #ifndef PWOSPF_PROTOCOL_H #define PWOSPF_PROTOCOL_H static const uint8_t OSPF_V2 = 2; static const uint32_t OSPF_AllSPFRouters = 0xe0000005; /*"224.0.0.5"*/ static const uint8_t OSPF_TYPE_HELLO = 1; static const uint8_t OSPF_TYPE_LSU = 4; static const uint8_t OSPF_TYPE_LSUPDATE = 4; static const uint8_t OSPF_NET_BROADCAST = 1; static const uint8_t OSPF_DEFAULT_HELLOINT = 5; /* seconds */ static const uint8_t OSPF_DEFAULT_LSUINT = 30; /* seconds */ static const uint8_t OSPF_NEIGHBOR_TIMEOUT = 20; /* seconds */ static const uint8_t OSPF_TOPO_ENTRY_TIMEOUT = 35; /* seconds */ static const uint8_t OSPF_DEFAULT_AUTHKEY = 0; /* ignored */ static const uint16_t OSPF_MAX_HELLO_SIZE = 1024; /* bytes */ static const uint16_t OSPF_MAX_LSU_SIZE = 1024; /* bytes */ static const uint8_t OSPF_MAX_LSU_TTL = 255; struct ospfv2_hdr { uint8_t version; /* ospf version number */ uint8_t type; /* type of ospf packet */ uint16_t len; /* length of packet in bytes including header */ uint32_t rid; /* router ID of packet source */ uint32_t aid; /* area packet belongs to */ uint16_t csum; /* checksum */ uint16_t autype; /* authentication type */ uint64_t audata; /* used by authentication scheme */ }__attribute__ ((packed)); struct ospfv2_hello_hdr { uint32_t nmask; /* netmask of source interface */ uint16_t helloint; /* interval time for hello broadcasts */ uint16_t padding; }__attribute__ ((packed)); struct ospfv2_lsu_hdr { uint16_t seq; uint8_t unused; uint8_t ttl; uint32_t num_adv; /* number of advertisements */ }__attribute__ ((packed)); struct ospfv2_lsu { uint32_t subnet; /* -- link subnet -- */ uint32_t mask; /* -- link subnet mask -- */ uint32_t rid; /* -- attached router id (if any) -- */ }__attribute__ ((packed)); #endif /* PWOSPF_PROTOCOL_H */