/* ospf_defs.h: Data type definitions for OSPF process models. */ /* Prevent multiple includes. */ #ifndef HEADER_FILE_ospf_defs_h #define HEADER_FILE_ospf_defs_h /* OspfT_Router_Id: OSPF Router ID, implemented as IpT_Address. */ typedef IpT_Address OspfT_Router_Id; /* OspfT_Area_Id: OSPF Area ID, implemented as IpT_Address. */ typedef IpT_Address OspfT_Area_Id; /* OspfT_Rte_Table: OSPF Routing Table. */ typedef struct OspfT_Rte_Table { List * entry_list_ptr; /* List of entries representing table. */ Boolean dirty_flag; /* Flag indicating table needs to be recalculated. */ double last_calc_time; /* Last time routing table was calculated. */ } OspfT_Rte_Table; /* OspfT_Router: Representation of an OSPF router. */ typedef struct OspfT_Router { OspfT_Router_Id router_id; /* Unique ID for router. */ OmsT_Pr_Handle proc_reg_handle; /* Process registry handle used to access router variables. */ Prohandle proc_handle; /* Process handle (used to invoke root process). */ int ip_outstrm; /* Stream index to IP. */ int options; /* Flag board indicating optional capabilities. */ OspfT_Rte_Table * rte_table_ptr; /* Pointer to OSPF routing table. */ Stathandle load_stat; /* Stat handle to load statistic. */ double bits_accum; /* Total accumulated bits router has sent. */ } OspfT_Router; /* OspfT_Area: Representation of an OSPF Area. */ typedef struct OspfT_Area { OspfT_Area_Id area_id; /* Unique ID for area. */ List * router_lsa_list_ptr; /* List of Router Link State Advertisements. */ List * network_lsa_list_ptr; /* List of Network Link State Advertisements. */ List * summary_lsa_list_ptr; /* List of Summary Link State Advertisements. */ List * interface_list_ptr; /* List of OSPF Interfaces connected to area. */ List * address_list_ptr; /* List of address ranges belonging to the area. */ List * hidden_addr_list_ptr; /* List of address ranges not to be advertised outside of area. */ OspfT_Router * parent_router_ptr; /* Pointer to parent router. */ } OspfT_Area; /* OspfT_Area_Range: Representation of an OSPF area range. */ typedef struct OspfT_Area_Range { IpT_Address_Range * addr_range_ptr; Boolean active; } OspfT_Area_Range; /* OspfT_Interface_Type: Type of network interface is connected to. */ typedef enum OspfT_Interface_Type { OspfC_Interface_Type_Pt_To_Pt, OspfC_Interface_Type_Broadcast, OspfC_Interface_Type_Non_Broadcast } OspfT_Interface_Type; /* OspfT_Interface: Representation of an OSPF interface. State variables are */ /* accessed through the process registry; also includes associated process. */ typedef struct OspfT_Interface { OmsT_Pr_Handle proc_reg_handle; /* Process registry handle used to access interface variables. */ Prohandle proc_handle; /* Process handle (used to invoke interface process). */ OspfT_Area * parent_area_ptr; /* Pointer to area interface belongs to. */ /* The variables below represent static state of the interface. Dynamic */ /* state should be accessed via the process registry, through the */ /* process registry handle provided above. */ OspfT_Interface_Type interface_type; IpT_Address interface_address; IpT_Address interface_mask; int mtu; OspfT_Area_Id area_id; double hello_interval; double router_dead_interval; double transmit_delay; int router_priority; int cost; double retransmit_interval; Evhandle wait_timer_handle; List * delayed_ack_list_ptr; } OspfT_Interface; /* OspfT_Interface_State: Operational states of OSPF interface process. */ /* Defined in section 9.1 of RFC 1247. */ typedef enum OspfT_Interface_State { OspfC_Interface_State_Down, OspfC_Interface_State_Loopback, OspfC_Interface_State_Waiting, OspfC_Interface_State_Pt_To_Pt, OspfC_Interface_State_DR_Other, OspfC_Interface_State_Backup, OspfC_Interface_State_DR } OspfT_Interface_State; /* OspfT_Interface_Event: OSPF events that cause interface state changes. */ /* Defined in section 9.2 of RFC 1247. */ typedef enum OspfT_Interface_Event { OspfC_Interface_Event_Intf_Up, OspfC_Interface_Event_Wait, OspfC_Interface_Event_Bkup_Seen, OspfC_Interface_Event_Nbr_Change, OspfC_Interface_Event_Loop_Ind, OspfC_Interface_Event_Unloop_Ind, OspfC_Interface_Event_Intf_Down } OspfT_Interface_Event; /* OspfT_Interface_Invoke_Info: Information passed to interface process during invocation. */ typedef struct OspfT_Interface_Invoke_Info { Objid interface_objid; OspfT_Interface * interface_ptr; IpT_Interface_Info * ip_interface_ptr; OspfT_Interface_Event interface_event; } OspfT_Interface_Invoke_Info; /* OspfT_Interface_State_Event_Proc: Function type used to handle state/event combinations. */ typedef void (* OspfT_Interface_State_Event_Proc) (OspfT_Interface *intf_ptr, OspfT_Interface_Event intf_event); /* OspfT_Neighbor: Representation of an OSPF neighbor. State variables are */ /* accessed through the process registry; also includes associated process. */ typedef struct OspfT_Neighbor { OmsT_Pr_Handle proc_reg_handle; /* Process registry handle used to access neighbor variables. */ Prohandle proc_handle; /* Process handle (used to invoke neighbor process). */ OspfT_Interface * parent_interface_ptr; /* Pointer to interface neighbor belongs to. */ /* The variables below represent static state of the neighbor. Dynamic */ /* state should be accessed via the process registry, through the */ /* process registry handle provided above. */ Evhandle inactive_timer; int options; IpT_Address ip_address; Packet * last_message_ptr; Evhandle rxmt_timer; Evhandle lsa_rxmt_timer; struct OspfT_Lsa_Header * pending_req_ptr; } OspfT_Neighbor; /* OspfT_Neighbor_State: Operational states of OSPF neighbor process. */ /* Defined in section 10.1 of RFC 1247. */ typedef enum OspfT_Neighbor_State { OspfC_Neighbor_State_Down, OspfC_Neighbor_State_Attempt, OspfC_Neighbor_State_Init, OspfC_Neighbor_State_Two_Way, OspfC_Neighbor_State_Ex_Start, OspfC_Neighbor_State_Exchange, OspfC_Neighbor_State_Loading, OspfC_Neighbor_State_Full } OspfT_Neighbor_State; /* OspfT_Neighbor_Event: OSPF events that cause neighbor state changes. */ /* Defined in section 10.2 of RFC 1247. */ typedef enum OspfT_Neighbor_Event { OspfC_Neighbor_Event_Hello_Rcvd, OspfC_Neighbor_Event_Start, OspfC_Neighbor_Event_Two_Way_Rcvd, OspfC_Neighbor_Event_Neg_Done, OspfC_Neighbor_Event_Exchg_Done, OspfC_Neighbor_Event_Bad_Ls_Req, OspfC_Neighbor_Event_Load_Done, OspfC_Neighbor_Event_Adj_OK, OspfC_Neighbor_Event_Seq_Num_Mismatch, OspfC_Neighbor_Event_One_Way_Rcvd, OspfC_Neighbor_Event_Kill_Nbr, OspfC_Neighbor_Event_Inactive_Timer, OspfC_Neighbor_Event_Ll_Down } OspfT_Neighbor_Event; /* OspfT_Neighbor_Invoke_Info: Information passed to neighbor process during invocation. */ typedef struct OspfT_Neighbor_Invoke_Info { OspfT_Neighbor * neighbor_ptr; OspfT_Neighbor_Event neighbor_event; IpT_Address neighbor_addr; int neighbor_priority; } OspfT_Neighbor_Invoke_Info; /* OspfT_Neighbor_State_Event_Proc: Function type used to handle state/event combinations. */ typedef void (* OspfT_Neighbor_State_Event_Proc) (OspfT_Neighbor *nbr_ptr, OspfT_Neighbor_Event nbr_event); #endif