Source code of Windows XP (NT5)
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//=============================================================================
// Copyright (c) 1997 Microsoft Corporation
//
// File: table.h
//
// Abstract:
// This module contains declarations for interface and group table
// structures, related macros, and function prototypes.
//
// Author: K.S.Lokesh (lokeshs@) 11-1-97
//
// Revision History:
//=============================================================================
#ifndef _IGMP_TABLE_H_
#define _IGMP_TABLE_H_
//
// forward declarations
//
struct _IF_TABLE_ENTRY;
struct _GROUP_TABLE_ENTRY;
struct _GI_ENTRY;
//
// struct: GLOBAL_CONFIG (same as mib structs in igmprm.h)
//
typedef IGMP_MIB_GLOBAL_CONFIG GLOBAL_CONFIG;
typedef PIGMP_MIB_GLOBAL_CONFIG PGLOBAL_CONFIG;
//---------------------------------------------------
// struct: IGMP_GLOBAL_STATS
//---------------------------------------------------
typedef struct _GLOBAL_STATS {
DWORD CurrentGroupMemberships;
DWORD GroupMembershipsAdded;
LARGE_INTEGER TimeWhenRtrStarted;
} IGMP_GLOBAL_STATS, *PIGMP_GLOBAL_STATS;
//-------------------------------------------------
// static group structures(external)
//-------------------------------------------------
typedef struct _STATIC_GROUP_V3 {
IGMP_STATIC_GROUP_V3;
DWORD Sources[0];
} STATIC_GROUP_V3, *PSTATIC_GROUP_V3;
typedef struct _MIB_GROUP_INFO_V3 {
IGMP_MIB_GROUP_INFO_V3;
IGMP_MIB_GROUP_SOURCE_INFO_V3 Sources[0];
} MIB_GROUP_INFO_V3, *PMIB_GROUP_INFO_V3;
typedef PIGMP_MIB_GROUP_INFO PMIB_GROUP_INFO;
typedef IGMP_MIB_GROUP_INFO MIB_GROUP_INFO;
#define GET_FIRST_STATIC_GROUP_V3(pConfig) \
((PSTATIC_GROUP_V3)((PIGMP_MIB_IF_CONFIG)(pConfig)+1))
#define GET_NEXT_STATIC_GROUP_V3(pStaticGroupV3) \
((PSTATIC_GROUP_V3) ((PCHAR)pStaticGroupV3+sizeof(IGMP_STATIC_GROUP_V3) \
+sizeof(IPADDR)*pStaticGroupV3->NumSources))
//----------------------------------------------------------------------------
// struct: IF_STATIC_GROUP
//----------------------------------------------------------------------------
typedef struct _IF_STATIC_GROUP {
LIST_ENTRY Link;
STATIC_GROUP_V3;
} IF_STATIC_GROUP, *PIF_STATIC_GROUP;
//---------------------------------------------------------------
// struct: IGMP_IF_CONFIG (same as mib structs in igmprm.h)
//
// if they are made different, then CopyMemory should not be used
//---------------------------------------------------------------
typedef struct _IGMP_IF_CONFIG {
IGMP_MIB_IF_CONFIG;
//v3: NonQuerier saves old values
DWORD RobustnessVariableOld;
DWORD GenQueryIntervalOld;
DWORD OtherQuerierPresentIntervalOld;
DWORD GroupMembershipTimeoutOld;
DWORD ExtSize;
LIST_ENTRY ListOfStaticGroups;
} IGMP_IF_CONFIG, *PIGMP_IF_CONFIG;
//---------------------------------------------------
// struct: IF_INFO
//---------------------------------------------------
typedef struct _IF_INFO {
UCHAR QuerierState; //if made DWORD, then change to interlocked operations
DWORD QuerierIpAddr;
LONGLONG QuerierPresentTimeout; //when the last query was heard. only if I am not querier
LONGLONG LastQuerierChangeTime; // when the last querier was changed
LONGLONG V1QuerierPresentTime; //when the last v1 query was heard
LONGLONG OtherVerPresentTimeWarn; //when the last warning was given
DWORD StartupQueryCountCurrent;
DWORD GroupQueriesSent;
DWORD GroupQueriesReceived;
LONGLONG TimeWhenActivated;
DWORD TotalIgmpPacketsReceived;
DWORD TotalIgmpPacketsForRouter;
DWORD GenQueriesSent;
DWORD GenQueriesReceived;
DWORD WrongVersionQueries;
DWORD JoinsReceived;
DWORD LeavesReceived;
DWORD CurrentGroupMemberships;
DWORD GroupMembershipsAdded;
DWORD WrongChecksumPackets;
DWORD ShortPacketsReceived;
DWORD LongPacketsReceived;
DWORD PacketsWithoutRtrAlert;
DWORD PacketSize;
} IF_INFO, *PIF_INFO;
//---------------------------------------------------
// struct RAS_CLIENT_INFO
//---------------------------------------------------
typedef struct _RAS_CLIENT_INFO {
DWORD SendFailures;
DWORD TotalIgmpPacketsReceived;
DWORD TotalIgmpPacketsForRouter;
DWORD GenQueriesReceived;
DWORD JoinsReceived;
DWORD LeavesReceived;
DWORD CurrentGroupMemberships;
DWORD GroupMembershipsAdded;
DWORD GroupMembershipsRemoved;
DWORD WrongChecksumPackets;
DWORD ShortPacketsReceived;
DWORD LongPacketsReceived;
DWORD WrongVersionQueries;
} RAS_CLIENT_INFO, *PRAS_CLIENT_INFO;
//---------------------------------------------------
// struct: RAS_TABLE_ENTRY
//---------------------------------------------------
typedef struct _RAS_TABLE_ENTRY {
LIST_ENTRY LinkByAddr;
LIST_ENTRY HTLinkByAddr;
LIST_ENTRY ListOfSameClientGroups;
DWORD NHAddr;
struct _IF_TABLE_ENTRY *IfTableEntry;
DWORD Status;
RAS_CLIENT_INFO Info;
} RAS_TABLE_ENTRY, *PRAS_TABLE_ENTRY;
//---------------------------------------------------
// struct: RAS_TABLE
//---------------------------------------------------
#define RAS_HASH_TABLE_SZ 256
typedef struct _RAS_TABLE {
LIST_ENTRY ListByAddr; //links ras clients
LIST_ENTRY HashTableByAddr[RAS_HASH_TABLE_SZ];
struct _IF_TABLE_ENTRY *pIfTable; //ptr to interface table entry
DWORD RefCount;
DWORD Status;
} RAS_TABLE, *PRAS_TABLE;
//---------------------------------------------------
// struct: SOCKET_EVENT_ENTRY
//---------------------------------------------------
typedef struct _SOCKET_EVENT_ENTRY {
LIST_ENTRY LinkBySocketEvents;
LIST_ENTRY ListOfInterfaces;
DWORD NumInterfaces;
HANDLE InputWaitEvent;
HANDLE InputEvent;
} SOCKET_EVENT_ENTRY, *PSOCKET_EVENT_ENTRY;
//---------------------------------------------------
// struct: SOCKET_ENTRY
//---------------------------------------------------
typedef struct _SOCKET_ENTRY {
LIST_ENTRY LinkByInterfaces;
SOCKET Socket;
PSOCKET_EVENT_ENTRY pSocketEventsEntry;
} SOCKET_ENTRY, *PSOCKET_ENTRY;
//------------------------------------------------------------------------------
// struct: IF_TABLE_ENTRY
//
// IF-table:Table_RWL protects LinkByAddr, LinkByIndex, HTLinkByIndex
// IpAddr, Status, pBinding
// IF-table:IfTableBucketCS protects ListOfSameIfGroups
// Interlocked operations protect Info, Config
//------------------------------------------------------------------------------
typedef struct _IF_TABLE_ENTRY {
LIST_ENTRY LinkByAddr; // sorted by Ipaddr.only activated interfaces
LIST_ENTRY LinkByIndex; // sorted by Index. all interfaces
LIST_ENTRY HTLinkByIndex; // not sorted within bucket
LIST_ENTRY ListOfSameIfGroups; // sorted by GroupAddr. GI entries for IF (all GIs of Ras clients)
LIST_ENTRY ListOfSameIfGroupsNew; // unmerged list. sorted by GroupAddr. GI entries same as above
DWORD NumGIEntriesInNewList; // used to decide if lists should be merged
UCHAR IfType; // IGMP_IF_ (NOT_RAS,RAS_ROUTER,RAS_SERVER). for external calls, IGMP_IF_PROXY might be set
// set when interface is created. cannot be changed again.
DWORD IfIndex;
IPADDR IpAddr; // set when IF is bound. ==0 for un-numbered IFs.
DWORD Status; // IF_(CREATED/BOUND/ENABLED/ACTIVATED),
// IF_DEACTIVATE_DELETE_FLAG,
// MGM_ENABLED_IGMPRTR_FLAG, IGMPRTR_MPROTOCOL_PRESENT_FLAG
PRAS_TABLE pRasTable; // null if not IGMP_IF_RAS_SERVER. created in _AddIfEntry()
PLIST_ENTRY pProxyHashTable; // g_pProxyHashTable: contains the proxy entries. They are also linked in
// order using the LinkBySameIfGroups field accessed through pite.
IGMP_IF_CONFIG Config;
PIGMP_IF_BINDING pBinding; // null if not bound or unNumbered interface.
IF_INFO Info;
SOCKET_ENTRY SocketEntry; // used by igmpRouter for getting input, and binding to waitEvent
// used by proxy to join the igmp groups as a host.
IGMP_TIMER_ENTRY QueryTimer; // Querier mode: used for sending general query.
IGMP_TIMER_ENTRY NonQueryTimer; // used when in NonQuerier mode: used for detecting other queriers
HANDLE pPrevIfGroupEnumPtr; // points to the next GI entry to be enumerated.
USHORT PrevIfGroupEnumSignature;//used in enumerating interface GI list in order
SOCKET StaticGroupSocket; // used only by igmp Router. created in _CreateIfSockets and
// closed in _DeleteIfSockets.
// Static groups in proxy are joined on SocketEntry.
DWORD CreationFlags; // see below.
} IF_TABLE_ENTRY, *PIF_TABLE_ENTRY;
//
// values for CreationFlags
//
#define REGISTERED_PROTOCOL_WITH_MGM 0x0001
#define TAKEN_INTERFACE_OWNERSHIP_WITH_MGM 0x0002
#define DONE_STAR_STAR_JOIN 0x0004
#define SOCKETS_CREATED 0x0008
// the above flags are cleared during deactivation, while below flags
// are retained across deactivations.
#define CREATION_FLAGS_DEACTIVATION_CLEAR 0x00FF
#define CREATED_PROXY_HASH_TABLE 0x0100
// expand the table if the number of interface is greater than 16
#define IF_HASHTABLE_SZ1 256
#define IF_EXPAND_THRESHOLD1 256
#define IF_HASHTABLE_SZ2 512
//---------------------------------------------------
// struct: IGMP_IF_TABLE
//---------------------------------------------------
typedef struct _IF_TABLE {
LIST_ENTRY ListByAddr;
LIST_ENTRY ListByIndex;
DWORD Status;
DWORD NumBuckets;
DWORD NumInterfaces;
PLIST_ENTRY HashTableByIndex;
PDYNAMIC_CS_LOCK *aIfBucketDCS;
PDYNAMIC_RW_LOCK *aIfBucketDRWL;
CRITICAL_SECTION IfLists_CS; // CS protecting the 1st two lists
} IGMP_IF_TABLE, *PIGMP_IF_TABLE;
//---------------------------------------------------
// struct: GI_INFO
//---------------------------------------------------
typedef struct _GROUP_INFO {
DWORD LastReporter;
LONGLONG GroupUpTime;
LONGLONG GroupExpiryTime;
LONGLONG V1HostPresentTimeLeft;
// version 3 fields
LONGLONG V2HostPresentTimeLeft;
} GI_INFO, *PGROUP_INFO;
//---------------------------------------------------
// struct: GI_ENTRY (group-Interface entry)
//---------------------------------------------------
typedef struct _GI_ENTRY {
LIST_ENTRY LinkByGI;
LIST_ENTRY LinkBySameIfGroups;
LIST_ENTRY LinkBySameClientGroups; //links all ras client groups
DWORD IfIndex;
DWORD Status; //bound,enabled,deleted,activated
BOOL bRasClient; //rasclient or not
BOOL bStaticGroup;
PIF_TABLE_ENTRY pIfTableEntry;
struct _GROUP_TABLE_ENTRY *pGroupTableEntry;
//below two fields valid only for ras
DWORD NHAddr;
PRAS_TABLE_ENTRY pRasTableEntry;
IGMP_TIMER_ENTRY GroupMembershipTimer;
/*timerlock*///LastMemQueryCount left to be sent
DWORD LastMemQueryCount;
IGMP_TIMER_ENTRY LastMemQueryTimer;
IGMP_TIMER_ENTRY LastVer1ReportTimer;/*timelock*/
BYTE Version; //ver1, ver2, ver3
GI_INFO Info;
// igmpv3 fields. ignored for rest.
IGMP_TIMER_ENTRY LastVer2ReportTimer;/*timelock*/
DWORD FilterType;
DWORD NumSources;
LIST_ENTRY *V3InclusionList;
LIST_ENTRY V3InclusionListSorted;
LIST_ENTRY V3ExclusionList;
//query sources
LIST_ENTRY V3SourcesQueryList;
DWORD V3SourcesQueryCount;
BOOL bV3SourcesQueryNow;
IGMP_TIMER_ENTRY V3SourcesQueryTimer;
#if DEBUG_FLAGS_SIGNATURE
DWORD Signature;//0xfadfad02
#endif
} GI_ENTRY, *PGI_ENTRY;
//kslksl1 10
#define SOURCES_BUCKET_SZ 1
//---------------------------------------------------
// struct: GI_SOURCE_ENTRY
//---------------------------------------------------
typedef struct _GI_SOURCE_ENTRY {
LIST_ENTRY LinkSources;
LIST_ENTRY LinkSourcesInclListSorted;
LIST_ENTRY V3SourcesQueryList;
PGI_ENTRY pGIEntry;
BOOL bInclusionList;
IPADDR IpAddr;
//how many more src queries left to be sent
DWORD V3SourcesQueryLeft;
BOOL bInV3SourcesQueryList;
//timeout sources in inc list
IGMP_TIMER_ENTRY SourceExpTimer;
LONGLONG SourceInListTime;
BOOL bStaticSource;
} GI_SOURCE_ENTRY, *PGI_SOURCE_ENTRY;
#define GET_IF_CONFIG_FOR_SOURCE(pSourceEntry) \
pSourceEntry->pGIEntry->pIfTableEntry->Config
#define GET_IF_ENTRY_FOR_SOURCE(pSourceEntry) \
pSourceEntry->pGIEntry->pIfTableEntry
//---------------------------------------------------
// struct: GROUP_TABLE_ENTRY
//---------------------------------------------------
typedef struct _GROUP_TABLE_ENTRY {
LIST_ENTRY HTLinkByGroup;
LIST_ENTRY LinkByGroup; //ordered list of groups
LIST_ENTRY ListOfGIs;
DWORD Group;
DWORD GroupLittleEndian;
DWORD NumVifs;
DWORD Status;
LONGLONG GroupUpTime;
#if DEBUG_FLAGS_SIGNATURE
DWORD Signature; //0xfadfad01
#endif
} GROUP_TABLE_ENTRY, *PGROUP_TABLE_ENTRY;
#define GROUP_HASH_TABLE_SZ 256
//---------------------------------------------------
// struct: GROUP_TABLE
//---------------------------------------------------
typedef struct _GROUP_TABLE {
LOCKED_LIST ListByGroup;
LIST_ENTRY ListByGroupNew;
DWORD NumGroupsInNewList;
DWORD Status;
LONG NumIfs; //Interlocked Operations
DYNAMIC_CS_LOCKED_LIST HashTableByGroup[GROUP_HASH_TABLE_SZ];
} GROUP_TABLE, *PGROUP_TABLE;
//-------------------------------------------------
// Proxy group entry
//-------------------------------------------------
typedef struct _PROXY_GROUP_ENTRY {
LIST_ENTRY HT_Link;
LIST_ENTRY LinkBySameIfGroups;
//v3
LIST_ENTRY ListSources;
DWORD Group;
DWORD GroupLittleEndian;
DWORD RefCount;
LONGLONG InitTime;
BOOL bStaticGroup;
//v3
DWORD NumSources;
DWORD FilterType;
} PROXY_GROUP_ENTRY, *PPROXY_GROUP_ENTRY;
typedef struct _PROXY_SOURCE_ENTRY {
LIST_ENTRY LinkSources;
IPADDR IpAddr;
DWORD RefCount;
BOOL bStaticSource;
DWORD JoinMode;//ALLOW,BLOCK, NO_STATE
DWORD JoinModeIntended;
} PROXY_SOURCE_ENTRY, *PPROXY_SOURCE_ENTRY;
//-------------------------------------------------
// prototypes
//-------------------------------------------------
DWORD
CreateIfSockets (
PIF_TABLE_ENTRY pite
);
VOID
DeleteIfSockets (
PIF_TABLE_ENTRY pite
);
VOID
DeleteAllTimers (
PLIST_ENTRY pHead,
DWORD bEntryType //RAS_CLIENT, NOT_RAS_CLIENT
);
DWORD
DeleteGIEntry (
PGI_ENTRY pgie, //group interface entry
BOOL bUpdateStats,
BOOL bCallMgm
);
VOID
DeleteAllGIEntries(
PIF_TABLE_ENTRY pite
);
VOID
DeleteGIEntryFromIf (
PGI_ENTRY pgie //group interface entry
);
VOID
MergeGroupLists(
);
VOID
MergeIfGroupsLists(
PIF_TABLE_ENTRY pite
);
VOID
MergeProxyLists(
PIF_TABLE_ENTRY pite
);
DWORD
CopyinIfConfig (
PIGMP_IF_CONFIG pConfig,
PIGMP_MIB_IF_CONFIG pConfigExt,
DWORD IfIndex
);
DWORD
CopyinIfConfigAndUpdate (
PIF_TABLE_ENTRY pite,
PIGMP_MIB_IF_CONFIG pConfigExt,
ULONG IfIndex
);
VOID
CopyoutIfConfig (
PIGMP_MIB_IF_CONFIG pConfigExt,
PIF_TABLE_ENTRY pite
);
DWORD
ValidateIfConfig (
PIGMP_MIB_IF_CONFIG pConfigExt,
DWORD IfIndex,
DWORD IfType,
ULONG StructureVersion,
ULONG StructureSize
);
DWORD
InitializeIfTable (
);
VOID
DeInitializeIfTable (
);
DWORD
InitializeGroupTable (
);
VOID
DeInitializeGroupTable (
);
DWORD
InitializeRasTable(
DWORD IfIndex,
PIF_TABLE_ENTRY pite
);
VOID
DeInitializeRasTable (
PIF_TABLE_ENTRY pite,
BOOL bFullCleanup
);
#endif // _IGMP_TABLE_H_