357 lines
8.7 KiB
C
357 lines
8.7 KiB
C
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//=============================================================================
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// Copyright (c) 1998 Microsoft Corporation
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// Module Name: main.c
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// Abstract:
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//
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// Author: K.S.Lokesh (lokeshs@) 1-1-98
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//=============================================================================
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//
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// forward declarations
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//
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struct _DVMRP_IF_TABLE;
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struct _ASYNC_SOCKET_DATA;
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//-----------------------------------------------------------------------------
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// globals structure
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//-----------------------------------------------------------------------------
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typedef struct _GLOBALS1 {
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ULONG RunningStatus;
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ULONG InitFlags;
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CRITICAL_SECTION WorkItemCS;
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HANDLE Heap;
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LOCKED_LIST RtmQueue;
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} GLOBALS1;
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typedef struct _GLOBALS {
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HANDLE LogHandle; //logging handle
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DWORD TraceId; //tracing handle
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DWORD ActivityCount; //count of pending work items
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HANDLE ActivityEvent; //signal it to notify 0 work items
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HANDLE RtmNotifyEvent; //signal it to notify Rtm
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DYNAMIC_LOCKS_STORE DynamicCSStore; //global store for dynamic CS
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DYNAMIC_LOCKS_STORE DynamicRWLStore; //global store for dynamic RWL
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struct _DVMRP_IF_TABLE *pIfTable; //interface table
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LARGE_INTEGER CurrentTime; //keeps current 64 bit tick time
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HANDLE MgmDvmrpHandle; //handle returned by MGM
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} GLOBALS;
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typedef DVMRP_GLOBAL_CONFIG GLOBAL_CONFIG;
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typedef PDVMRP_GLOBAL_CONFIG PGLOBAL_CONFIG;
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typedef DVMRP_IF_CONFIG IF_CONFIG;
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typedef PDVMRP_IF_CONFIG PIF_CONFIG;
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//-----------------------------------------------------------------------------
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// DVMRP_IF_TABLE
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//-----------------------------------------------------------------------------
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typedef struct _DVMRP_IF_TABLE {
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LIST_ENTRY IfList; // in order of increasing index
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CRITICAL_SECTION IfList_CS; // CS protecting IfList
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DWORD NumInterfaces;
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PLIST_ENTRY IfHashTable;
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PDYNAMIC_RW_LOCK *aIfDRWL;
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CRITICAL_SECTION PeerLists_CS; // common lock for add/remove peers
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DWORD NumActiveIfs;
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} DVMRP_IF_TABLE, *PDVMRP_IF_TABLE;
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#define IF_HASHTABLE_SIZE 50
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//-----------------------------------------------------------------------------
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// IF_TABLE_ENTRY
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//-----------------------------------------------------------------------------
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typedef struct _IF_TABLE_ENTRY {
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LIST_ENTRY Link;
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LIST_ENTRY HTLink;
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DWORD IfIndex;
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IPADDR IpAddr;
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DWORD Status;
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DWORD CreationFlags;
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DWORD RefCount;
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PIF_CONFIG pConfig;
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DWORD NumAddrBound;
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PDVMRP_ADDR_MASK pBinding;
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struct _IF_INFO *pInfo;
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DWORD NumPeers; // peers in PeerList
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LIST_ENTRY PeerList; // list of peers being created
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LIST_ENTRY DeletedPeerList; // list of peers being deleted
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SOCKET Socket;
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struct _ASYNC_SOCKET_DATA *pSocketData;
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RTM_ENTITY_HANDLE RtmHandle; // register with Rtm
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} IF_TABLE_ENTRY, *PIF_TABLE_ENTRY;
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#define IF_CREATED_FLAG 0x00000001
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#define IF_BOUND_FLAG 0x00000002
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#define IF_ENABLED_FLAG 0x00000004
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#define IF_ACTIVATED_FLAG 0x00000008
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#define IF_DELETED_FLAG 0x80000000
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#define IS_IF_BOUND(pite) \
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((pite)->Status&IF_BOUND_FLAG)
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#define IS_IF_ENABLED_BY_RTRMGR(pite) \
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((pite)->Status&IF_ENABLED_FLAG)
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#define IS_IF_ENABLED_IN_CONFIG(pite) \
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(IS_DVMRP_IF_ENABLED_FLAG_SET((pite)->pConfig->Flags))
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#define IS_IF_ENABLED(pite) \
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( IS_IF_ENABLED_BY_RTRMGR(pite) && IS_IF_ENABLED_IN_CONFIG(pite) )
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#define IS_IF_ENABLED_BOUND(pite) \
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(IS_IF_ENABLED(pite)&&IS_IF_BOUND(pite))
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#define IS_IF_DELETED(pite) \
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((pite)->Status&IF_DELETED_FLAG)
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#define IS_IF_ACTIVATED(pite) \
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( !((pite)->Status&IF_DELETED_FLAG) \
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&& ((pite)->Status & IF_ACTIVATED_FLAG) )
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#define IF_FLAGS_SOCKETS_CREATED 0x00000001
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#define IF_FLAGS_PROTO_REGISTERED_WITH_MGM 0x00000002
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#define IF_FLAGS_IF_REGISTERED_WITH_MGM 0x00000004
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//-----------------------------------------------------------------------------
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// IF_INFO
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//-----------------------------------------------------------------------------
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typedef struct _IF_INFO {
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LONGLONG TimeWhenActivated;
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} IF_INFO, *PIF_INFO;
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//-----------------------------------------------------------------------------
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// type definitions for event message queue
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//-----------------------------------------------------------------------------
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typedef struct _EVENT_QUEUE_ENTRY {
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ROUTING_PROTOCOL_EVENTS EventType;
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MESSAGE Msg;
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LIST_ENTRY Link;
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} EVENT_QUEUE_ENTRY, *PEVENT_QUEUE_ENTRY;
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//
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// extern variables
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//
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extern GLOBALS Globals;
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extern GLOBALS1 Globals1;
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extern GLOBAL_CONFIG GlobalConfig;
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#define G_pIfTable (Globals.pIfTable)
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//
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// defines
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//
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//-----------------------------------------------------------------------------
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// #defines for global structure
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//-----------------------------------------------------------------------------
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//
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// various codes describing states of dvmrp
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//
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typedef enum {
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DVMRP_STATUS_STARTING = 100,
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DVMRP_STATUS_RUNNING = 101,
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DVMRP_STATUS_STOPPING = 102,
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DVMRP_STATUS_STOPPED = 103
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} DVMRP_STATUS_CODE;
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//
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// WorkItemCS lock macros
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//
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#define ACQUIRE_WORKITEM_LOCK(proc) EnterCriticalSection(&Globals1.WorkItemCS)
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#define RELEASE_WORKITEM_LOCK(proc) LeaveCriticalSection(&Globals1.WorkItemCS)
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//-----------------------------------------------------------------------------
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// #defines for global config
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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// macros for IfTable
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//-----------------------------------------------------------------------------
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#define IF_HASH_VALUE(_index) ((_index) % IF_HASHTABLE_SIZE)
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#define GET_IF_HASH_BUCKET(Index) \
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&G_pIfTable->IfHashTable[IF_HASH_VALUE(IfIndex)];
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// macros for If DRW lock
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#define ACQUIRE_IF_LOCK_EXCLUSIVE(_IfIndex, _proc) \
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AcquireDynamicRWLock( \
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&G_pIfTable->aIfDRWL[IF_HASH_VALUE(_IfIndex)], \
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LOCK_MODE_WRITE, &Globals.DynamicRWLStore)
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#define RELEASE_IF_LOCK_EXCLUSIVE(_IfIndex, _proc) \
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ReleaseDynamicRWLock( \
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&G_pIfTable->aIfDRWL[IF_HASH_VALUE(_IfIndex)],\
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LOCK_MODE_WRITE, &Globals.DynamicRWLStore)
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#define ACQUIRE_IF_LOCK_SHARED(_IfIndex, _proc) \
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AcquireDynamicRWLock( \
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&G_pIfTable->aIfDRWL[IF_HASH_VALUE(_IfIndex)],\
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LOCK_MODE_READ, &Globals.DynamicRWLStore)
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#define RELEASE_IF_LOCK_SHARED(_IfIndex, _proc) \
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ReleaseDynamicRWLock( \
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&G_pIfTable->aIfDRWL[IF_HASH_VALUE(_IfIndex)], \
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LOCK_MODE_READ, &Globals.DynamicRWLStore)
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// macros for IfList_CS lock
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#define ACQUIRE_IF_LIST_LOCK(_proc) \
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ENTER_CRITICAL_SECTION(&G_pIfTable->IfList_CS, "G_IfListCS", _proc);
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#define RELEASE_IF_LIST_LOCK(_proc) \
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LEAVE_CRITICAL_SECTION(&G_pIfTable->IfList_CS, "G_IfListCS", _proc);
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// macros for PeerLists_CS lock (see in peer.h)
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//
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// local prototypes
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//
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DWORD
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WINAPI
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StartProtocol(
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IN HANDLE hRtmNotifyEvent,
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IN PSUPPORT_FUNCTIONS pSupportFunctions,
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IN PVOID pGlobalConfig,
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IN ULONG ulStructureVersion,
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IN ULONG ulStructureSize,
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IN ULONG ulStructureCount
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);
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DWORD
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APIENTRY
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StartComplete(
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VOID
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);
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DWORD
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APIENTRY
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StopProtocol(
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VOID
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);
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DWORD
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WINAPI
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GetGlobalInfo(
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IN OUT PVOID pvConfig,
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IN OUT PDWORD pdwSize,
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IN OUT PULONG pulStructureVersion,
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IN OUT PULONG pulStructureSize,
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IN OUT PULONG pulStructureCount
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);
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DWORD
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WINAPI
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SetGlobalInfo(
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IN PVOID pvConfig,
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IN ULONG ulStructureVersion,
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IN ULONG ulStructureSize,
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IN ULONG ulStructureCount
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);
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DWORD
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APIENTRY
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GetEventMessage(
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OUT ROUTING_PROTOCOL_EVENTS *pEventType,
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OUT PMESSAGE pMessage
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);
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DWORD
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EnqueueEvent(
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PLOCKED_LIST pQueue,
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ROUTING_PROTOCOL_EVENTS EventType,
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MESSAGE Msg
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);
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DWORD
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DequeueEvent(
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PLOCKED_LIST pQueue,
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ROUTING_PROTOCOL_EVENTS *pEventType,
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PMESSAGE pResult
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);
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BOOL
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DllStartup(
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);
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BOOL
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DllCleanup(
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);
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VOID
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ProtocolCleanup(
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);
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DWORD
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ValidateGlobalConfig(
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PDVMRP_GLOBAL_CONFIG pGlobalConfig,
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DWORD StructureSize
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);
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