mirror of
https://github.com/reactos/reactos.git
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105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS TCP/IP protocol driver
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* FILE: include/neighbor.h
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* PURPOSE: Neighbor definitions
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*/
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#pragma once
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#define NB_HASHMASK 0xF /* Hash mask for neighbor cache */
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typedef VOID (*PNEIGHBOR_PACKET_COMPLETE)
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( PVOID Context, PNDIS_PACKET Packet, NDIS_STATUS Status );
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typedef struct _NEIGHBOR_PACKET {
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LIST_ENTRY Next;
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PNDIS_PACKET Packet;
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PNEIGHBOR_PACKET_COMPLETE Complete;
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PVOID Context;
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} NEIGHBOR_PACKET, *PNEIGHBOR_PACKET;
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typedef struct NEIGHBOR_CACHE_TABLE {
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struct NEIGHBOR_CACHE_ENTRY *Cache; /* Pointer to cache */
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KSPIN_LOCK Lock; /* Protecting lock */
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} NEIGHBOR_CACHE_TABLE, *PNEIGHBOR_CACHE_TABLE;
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/* Information about a neighbor */
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typedef struct NEIGHBOR_CACHE_ENTRY {
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struct NEIGHBOR_CACHE_ENTRY *Next; /* Pointer to next entry */
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UCHAR State; /* State of NCE */
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UINT EventTimer; /* Ticks since last event */
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UINT EventCount; /* Number of events */
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PIP_INTERFACE Interface; /* Pointer to interface */
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UINT LinkAddressLength; /* Length of link address */
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PVOID LinkAddress; /* Pointer to link address */
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IP_ADDRESS Address; /* IP address of neighbor */
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LIST_ENTRY PacketQueue; /* Packet queue */
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} NEIGHBOR_CACHE_ENTRY, *PNEIGHBOR_CACHE_ENTRY;
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/* NCE states */
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#define NUD_INCOMPLETE 0x01
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#define NUD_PERMANENT 0x02
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#define NUD_STALE 0x04
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/* Number of seconds between ARP transmissions */
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#define ARP_RATE 900
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/* Number of seconds before the NCE times out */
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#define ARP_TIMEOUT ARP_RATE + 15
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/* Number of seconds before retransmission */
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#define ARP_TIMEOUT_RETRANSMISSION 5
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extern NEIGHBOR_CACHE_TABLE NeighborCache[NB_HASHMASK + 1];
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VOID NBTimeout(
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VOID);
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VOID NBStartup(
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VOID);
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VOID NBShutdown(
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VOID);
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VOID NBSendSolicit(
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PNEIGHBOR_CACHE_ENTRY NCE);
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PNEIGHBOR_CACHE_ENTRY NBAddNeighbor(
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PIP_INTERFACE Interface,
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PIP_ADDRESS Address,
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PVOID LinkAddress,
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UINT LinkAddressLength,
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UCHAR Type,
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UINT EventTimer);
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VOID NBUpdateNeighbor(
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PNEIGHBOR_CACHE_ENTRY NCE,
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PVOID LinkAddress,
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UCHAR State);
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PNEIGHBOR_CACHE_ENTRY NBLocateNeighbor(
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PIP_ADDRESS Address);
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PNEIGHBOR_CACHE_ENTRY NBFindOrCreateNeighbor(
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PIP_INTERFACE Interface,
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PIP_ADDRESS Address);
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BOOLEAN NBQueuePacket(
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PNEIGHBOR_CACHE_ENTRY NCE,
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PNDIS_PACKET NdisPacket,
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PNEIGHBOR_PACKET_COMPLETE PacketComplete,
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PVOID PacketContext);
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VOID NBRemoveNeighbor(
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PNEIGHBOR_CACHE_ENTRY NCE);
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ULONG NBCopyNeighbors(
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PIP_INTERFACE Interface,
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PIPARP_ENTRY ArpTable);
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VOID NBResetNeighborTimeout(
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PIP_ADDRESS Address);
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/* EOF */
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