76 lines
3.1 KiB
C
76 lines
3.1 KiB
C
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/********************************************************************/
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/** Microsoft LAN Manager **/
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/** Copyright(c) Microsoft Corp., 1990-2000 **/
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/********************************************************************/
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/* :ts=4 */
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//** IGMP.H - IP multicast definitions.
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//
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// This file contains definitions related to IP multicast.
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// IP protocol number for IGMP
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#define PROT_IGMP 2
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extern uint IGMPLevel;
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extern HANDLE IcmpHeaderPool;
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// Structure used for local mcast address tracking.
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typedef struct IGMPAddr {
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struct IGMPAddr *iga_next;
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struct IGMPSrcAddr *iga_srclist;
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IPAddr iga_addr;
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uint iga_grefcnt; // # sockets joining whole group
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uint iga_isrccnt; // # sources with isa_irefcnt>0
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uint iga_resptimer; // query response timer
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uint iga_resptype; // response type
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uint iga_trtimer; // triggered report timer
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uchar iga_changetype;// triggered change type
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uchar iga_xmitleft; // triggered xmit's left
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} IGMPAddr;
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// Values of iga_resptype
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#define NO_RESP 0
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#define GROUP_RESP 1
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#define GROUP_SOURCE_RESP 2
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// Values of iga_changetype
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#define NO_CHANGE 0
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#define MODE_CHANGE 1
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#define SOURCE_CHANGE 2
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typedef struct IGMPSrcAddr {
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struct IGMPSrcAddr *isa_next;
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IPAddr isa_addr;
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uint isa_irefcnt; // # sockets Including this source
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uint isa_xrefcnt; // # sockets Excluding this source
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uchar isa_xmitleft; // triggered xmit's left
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uchar isa_csmarked; // response xmit's left
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} IGMPSrcAddr;
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#define IGMP_ADD 0
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#define IGMP_DELETE 1
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#define IGMP_DELETE_ALL 2
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#define IGMP_CHANGE 3
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#define IGMPV1 2 //IGMP version 1
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#define IGMPV2 3 //IGMP version 2
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#define IGMPV3 4 //IGMP version 3
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extern void InitIGMPForNTE(NetTableEntry *NTE);
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extern void StopIGMPForNTE(NetTableEntry *NTE);
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extern IP_STATUS IGMPAddrChange(NetTableEntry *NTE, IPAddr Addr,
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uint ChangeType,
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uint NumExclSources, IPAddr *ExclSourceList,
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uint NumEnclSources, IPAddr *InclSourceList);
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extern IP_STATUS IGMPInclChange(NetTableEntry *NTE, IPAddr Addr,
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uint NumAddSources, IPAddr *AddSourceList,
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uint NumDelSources, IPAddr *DelSourceList);
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extern IP_STATUS IGMPExclChange(NetTableEntry *NTE, IPAddr Addr,
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uint NumAddSources, IPAddr *AddSourceList,
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uint NumDelSources, IPAddr *DelSourceList);
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extern void IGMPTimer(NetTableEntry *NTE);
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extern uchar IsMCastSourceAllowed(IPAddr Dest, IPAddr Src, uchar Protocol, NetTableEntry *NTE);
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#define IGMP_TABLE_SIZE 32
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#define IGMP_HASH(x) ((((uchar *)&(x))[3]) % IGMP_TABLE_SIZE)
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