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653 lines
15 KiB
653 lines
15 KiB
/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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ipinip\ipinip.h
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Abstract:
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Main header file for the IP in IP encapsulation driver
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Revision History:
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--*/
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#ifndef __WANARP_WANARP_H__
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#define __WANARP_WANARP_H___
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//
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// Symbolic link into DOS space
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//
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#define WIN32_WANARP_SYMBOLIC_LINK L"\\DosDevices\\WanArp"
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//
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// ARP name (for IP). Also goes into LLInterface
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//
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#define WANARP_ARP_NAME WANARP_SERVICE_NAME_W
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//
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// Name for NDIS. NDIS requires us to have a TCPIP_ in front of the name
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//
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#define WANARP_NDIS_NAME L"TCPIP_WANARP"
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//
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// Need to prefix all our device names with this when we give name to
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// IP. We assume that the name we cat is of type \<Name>
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//
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#define TCPIP_IF_PREFIX L"\\DEVICE"
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//
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// The prefix for the registry key
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//
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#define TCPIP_REG_PREFIX L"\\Tcpip\\Parameters\\Interfaces\\"
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//
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// Length of a GUID
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//
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#define GUID_STR_LEN (38)
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//
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// We look like an 802.x ARP interface
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//
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#define ARP_802_ADDR_LENGTH 6
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//
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// Macro for building a 802.3 hw address given an index.
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// We do this since our adapters do not have a real net card associated with
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// them
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//
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#define HW_NAME_SEED "\0SExx\0"
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#define BuildHardwareAddrFromIndex(addr,index) { \
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RtlCopyMemory(addr, HW_NAME_SEED, 6); \
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addr[3] = (uchar) index >> 8; \
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addr[4] = (uchar) index; \
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}
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//
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// The default speed and MTU. We change the MTU when we get a better estimate
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// but the speed remains the same
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//
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#define WANARP_DEFAULT_MTU 1500
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#define WANARP_DEFAULT_SPEED 28000
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#define MEDIA_802_3 0 // index of media
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#define WANARP_LOOKAHEAD_SIZE 128 // A reasonable lookahead size
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#define MIN_ETYPE 0x600 // Minimum valid Ethertype
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#define ARP_ETYPE_IP 0x800 // Standard ETYPE
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//
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// Max number of packets a connection can have pending
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//
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#define WANARP_MAX_PENDING_PACKETS 32
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//
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// Initial size of packet pool
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//
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#define WAN_PACKET_POOL_COUNT 64
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//
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// Max outstanding packets:
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// Allow 64 connections to be maxed out pending, and 64 others to have
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// 2 packets outstanding
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//
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#define WAN_PACKET_POOL_OVERFLOW ((WANARP_MAX_PENDING_PACKETS * 64) + (2 * 64))
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#define CompareUnicodeStrings(S1,S2) \
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(((S1)->Length == (S2)->Length) && \
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(RtlCompareMemory((S1)->Buffer, \
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(S2)->Buffer, \
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(S2)->Length) == (S2)->Length))
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#define MIN(a,b) ((a) < (b)?a:b)
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//
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// Functions which are called at passive but acquire spinlocks
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//
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#define PASSIVE_ENTRY() PAGED_CODE()
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#define PASSIVE_EXIT() PAGED_CODE()
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//
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// Nifty macro for printing IP Addresses
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//
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#define PRINT_IPADDR(x) \
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((x)&0x000000FF),(((x)&0x0000FF00)>>8),(((x)&0x00FF0000)>>16),(((x)&0xFF000000)>>24)
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//
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// 0.0.0.0 is an invalid address
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//
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#define INVALID_IP_ADDRESS 0x00000000
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#define IsUnicastAddr(X) ((DWORD)((X) & 0x000000F0) < (DWORD)(0x000000E0))
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#define IsClassDAddr(X) (((X) & 0x000000F0) == 0x000000E0)
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//
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// IPv4 header
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//
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#include <packon.h>
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typedef struct _IP_HEADER
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{
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BYTE byVerLen; // Version and length.
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BYTE byTos; // Type of service.
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WORD wLength; // Total length of datagram.
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WORD wId; // Identification.
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WORD wFlagOff; // Flags and fragment offset.
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BYTE byTtl; // Time to live.
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BYTE byProtocol; // Protocol.
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WORD wXSum; // Header checksum.
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DWORD dwSrc; // Source address.
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DWORD dwDest; // Destination address.
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}IP_HEADER, *PIP_HEADER;
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#define LengthOfIpHeader(X) (ULONG)((((X)->byVerLen) & 0x0F)<<2)
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typedef struct _ETH_HEADER
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{
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//
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// 6 byte destination address
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//
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BYTE rgbyDestAddr[ARP_802_ADDR_LENGTH];
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//
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// 6 byte source address
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//
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BYTE rgbySourceAddr[ARP_802_ADDR_LENGTH];
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//
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// 2 byte type
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//
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WORD wType;
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}ETH_HEADER, *PETH_HEADER;
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#include <packoff.h>
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#define CS_DISCONNECTING 0x00
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#define CS_CONNECTING 0x01
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#define CS_CONNECTED 0x02
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//
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// The CONN_ENTRY structure defines a connection. There is only one
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// CONN_ENTRY for each dial out or router connection. However, on the
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// server adapter, we can have multiple CONN_ENYTRYs - one for each dial
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// in client. The fields of a CONN_ENTRY are all READ-ONLY except
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// for ulSpeed, ulMtu, pAdapter and byState.
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// REFCOUNTS: A CONN_ENTRY is refcounted once when the connection is
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// created (LinkUp) and then once for every send. It is deref'ed
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// on every SendComplete and then again on CloseLink.
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//
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typedef struct _CONN_ENTRY
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{
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//
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// Back pointer to owning adapter
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//
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struct _ADAPTER *pAdapter;
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//
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// Connection information
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//
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DWORD dwLocalAddr;
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DWORD dwLocalMask;
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DWORD dwRemoteAddr;
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//
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// IP's context for this link. Only used for DU_CALLIN connections
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//
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PVOID pvIpLinkContext;
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//
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// Pointer to the lock to use when locking this connection.
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// For clients, this is a pointer to rlLock, while for others
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// this points to the adapter's lock entry
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//
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PRT_LOCK prlLock;
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//
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// The lock for this entry. Only used for DU_CALLIN
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//
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RT_LOCK rlLock;
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//
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// Refcount
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//
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LONG lRefCount;
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//
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// The MTU and speed for this connection
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//
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ULONG ulMtu;
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ULONG ulSpeed;
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//
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// The usage (CALLIN, CALLOUT or ROUTER) for the connection
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//
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DIAL_USAGE duUsage;
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//
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// The slot index in the connection table
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//
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ULONG ulSlotIndex;
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//
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// Precanned header for this connection
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//
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ETH_HEADER ehHeader;
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//
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// Flag which determines whether to filter netbios packets or not
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//
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BOOLEAN bFilterNetBios;
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BYTE byState;
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}CONN_ENTRY, *PCONN_ENTRY;
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#include "ref.h"
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#define InitConnEntryRefCount(p) InitStructureRefCount("ConnEntry", (p), 0)
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#define ReferenceConnEntry(p) ReferenceStructure("ConnEntry", (p))
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#define DereferenceConnEntry(p) DereferenceStructure("ConnEntry", (p) ,WanpDeleteConnEntry)
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#define AS_FREE 0x00
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#define AS_REMOVING 0x01
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#define AS_ADDING 0x02
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#define AS_ADDED 0x03
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#define AS_UNMAPPING 0x04
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#define AS_MAPPING 0x05
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#define AS_MAPPED 0x06
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//
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// There are two conditions where an adapter is in AS_MAPPED state yet has
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// no connection entry:
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// (i) A Server Adapter is mapped, but has a connection table
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// (ii) If a demand dial attempt finds an added adapter, it maps it but
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// doesnt create the CONN_ENTRY till LinkUp
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//
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//
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// REFCOUNTS: An ADAPTER is referenced once on creation since it lies on
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// a list and once when it added to IP. It is referenced when it
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// is mapped to an interface since the interface has a pointer to it.
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// It is also referenced once for each connection.
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// ADAPTERs are dereferenced when they are unmapped from an interface (at
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// linkdown or connection failure). They are deref'ed when a CONN_ENTRY
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// is finally cleaned out (not at linkdown - rather when the CONN_ENTRY's
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// ref goes to 0). They are deref'ed when they are removed from the
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// list to be deleted. We also deref them when we get a CloseAdapter from
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// IP
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//
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typedef struct _ADAPTER
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{
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//
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// Link in the list of adapters on this machine
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//
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LIST_ENTRY leAdapterLink;
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//
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// The connection entry for this adapter. Not used for the Server
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// Adapter since it has many connections on it
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//
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PCONN_ENTRY pConnEntry;
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//
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// Name of the binding
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//
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UNICODE_STRING usConfigKey;
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//
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// Name of the device
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//
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UNICODE_STRING usDeviceNameW;
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#if DBG
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//
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// Same thing, only in asciiz so that we can print it easily
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//
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ANSI_STRING asDeviceNameA;
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#endif
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//
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// Lock that protects the adapter
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//
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RT_LOCK rlLock;
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//
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// The reference count for the structure
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// Keep this and the lock together to make the cache happy
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//
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LONG lRefCount;
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//
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// The index given to us by IP
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//
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DWORD dwAdapterIndex;
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#if DBG
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DWORD dwRequestedIndex;
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#endif
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//
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// TDI entity magic
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//
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DWORD dwIfInstance;
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DWORD dwATInstance;
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//
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// The state of this adapter
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//
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BYTE byState;
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//
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// The Guid for the adapter
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//
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GUID Guid;
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//
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// IP's context for this adapter
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//
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PVOID pvIpContext;
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//
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// The interface that is adapter is mapped to
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//
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struct _UMODE_INTERFACE *pInterface;
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//
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// The pending packet queue length
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//
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ULONG ulQueueLen;
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//
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// Queue of pending packets
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//
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LIST_ENTRY lePendingPktList;
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//
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// Queue of header buffers for the pending packets
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//
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LIST_ENTRY lePendingHdrList;
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//
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// The next two members are used to synchronize state changes for
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// the adapter. There are two kinds of notifications needed. When a
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// thread is modifying the state using functions which are completed
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// asynchronously, it needs to wait for the completion routine to run
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// The completion routine uses the pkeChangeEvent to notify the original
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// thread.
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// Also while this change is in progress, other threads may be interested
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// in getting access to the data structure once the state has been
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// modified. They add WAN_EVENT_NODE to the EventList and the original
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// thread then goes about notifying each of the waiters
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//
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PKEVENT pkeChangeEvent;
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LIST_ENTRY leEventList;
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BYTE rgbyHardwareAddr[ARP_802_ADDR_LENGTH];
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}ADAPTER, *PADAPTER;
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#define InitAdapterRefCount(p) InitStructureRefCount("Adapter", (p), 1)
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#define ReferenceAdapter(p) ReferenceStructure("Adapter", (p))
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#define DereferenceAdapter(p) DereferenceStructure("Adapter", (p), WanpDeleteAdapter)
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typedef struct _UMODE_INTERFACE
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{
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//
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// Link on the list of interfaces
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//
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LIST_ENTRY leIfLink;
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//
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// Pointer to adapter when mapped
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//
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PADAPTER pAdapter;
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//
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// The (user mode) interface index
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//
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DWORD dwIfIndex;
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//
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// The reserved index for this interface
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//
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DWORD dwRsvdAdapterIndex;
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//
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// The lock for the interface
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//
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RT_LOCK rlLock;
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//
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// The reference count for the structure
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// Keep this and the lock together to make the cache happy
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//
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LONG lRefCount;
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//
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// The GUID for the interface. This is setup at add interface time
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// for router interfaces and at lineup for callouts
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//
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GUID Guid;
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//
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// The usage (CALLIN, CALLOUT or ROUTER)
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//
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DIAL_USAGE duUsage;
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//
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// Count of packets pending. Used to cap the max number of packets
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// copied when a connection is being brought up
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//
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ULONG ulPacketsPending;
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//
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// The admin and operational states.
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//
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DWORD dwAdminState;
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DWORD dwOperState;
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//
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// Last time the state changed. We dont do anything with this right now
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//
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DWORD dwLastChange;
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//
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// Sundry MIB-II statistics for the interface
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//
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ULONG ulInOctets;
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ULONG ulInUniPkts;
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ULONG ulInNonUniPkts;
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ULONG ulInDiscards;
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ULONG ulInErrors;
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ULONG ulInUnknownProto;
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ULONG ulOutOctets;
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ULONG ulOutUniPkts;
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ULONG ulOutNonUniPkts;
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ULONG ulOutDiscards;
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ULONG ulOutErrors;
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}UMODE_INTERFACE, *PUMODE_INTERFACE;
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#define InitInterfaceRefCount(p) InitStructureRefCount("Interface", (p), 1)
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#define ReferenceInterface(p) ReferenceStructure("Interface", (p))
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#define DereferenceInterface(p) DereferenceStructure("Interface", (p), WanpDeleteInterface)
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typedef struct _ADDRESS_CONTEXT
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{
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//
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// The next RCE in the chain
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//
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RouteCacheEntry *pNextRce;
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PCONN_ENTRY pOwningConn;
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}ADDRESS_CONTEXT, *PADDRESS_CONTEXT;
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//
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// Context for an asynchronous NdisRequest
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//
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typedef
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VOID
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(* PFNWANARP_REQUEST_COMPLETION_HANDLER)(
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NDIS_HANDLE nhHandle,
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struct _WANARP_NDIS_REQUEST_CONTEXT *pRequestContext,
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NDIS_STATUS nsStatus
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);
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#pragma warning(disable:4201)
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typedef struct _WANARP_NDIS_REQUEST_CONTEXT
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{
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//
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// The request sent to NDIS
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// Ndis returns a pointer to this in our completion routine; we
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// use CONTAINING_RECORD to get a pointer to the context structure
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//
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NDIS_REQUEST NdisRequest;
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//
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// The completion routine to call when NDIS is done processing the
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// request. If NULL, then we stop
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//
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PFNWANARP_REQUEST_COMPLETION_HANDLER pfnCompletionRoutine;
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union
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{
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BYTE rgbyProtocolId[ARP_802_ADDR_LENGTH];
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ULONG ulLookahead;
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ULONG ulPacketFilter;
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TRANSPORT_HEADER_OFFSET TransportHeaderOffset;
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};
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}WANARP_NDIS_REQUEST_CONTEXT, *PWANARP_NDIS_REQUEST_CONTEXT;
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#pragma warning(default:4201)
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//
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// Our resource (which doesnt allow recursive access)
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//
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typedef struct _WAN_RESOURCE
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{
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//
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// Number of people waiting on the resource ( + 1 if one is using
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// the resource)
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//
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LONG lWaitCount;
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KEVENT keEvent;
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}WAN_RESOURCE, *PWAN_RESOURCE;
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//
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// List of events
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//
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typedef struct _WAN_EVENT_NODE
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{
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LIST_ENTRY leEventLink;
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KEVENT keEvent;
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}WAN_EVENT_NODE, *PWAN_EVENT_NODE;
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//
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// Define alignment macros to align structure sizes and pointers up and down.
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//
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#define ALIGN_DOWN(length, type) \
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((ULONG)(length) & ~(sizeof(type) - 1))
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#define ALIGN_UP(length, type) \
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(ALIGN_DOWN(((ULONG)(length) + sizeof(type) - 1), type))
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#define ALIGN_DOWN_POINTER(address, type) \
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((PVOID)((ULONG_PTR)(address) & ~((ULONG_PTR)sizeof(type) - 1)))
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#define ALIGN_UP_POINTER(address, type) \
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(ALIGN_DOWN_POINTER(((ULONG_PTR)(address) + sizeof(type) - 1), type))
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#endif // __WANARP_WANARP_H__
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