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/*++
Copyright (c) Microsoft Corporation. All rights reserved.
Module Name:
ntddtcp.h
Abstract:
This header file defines constants and types for accessing the NT TCP driver.
Author:
Mike Massa (mikemas) 13-Aug-1993
Revision History:
--*/
#pragma once
#ifndef _NTDDTCP_
#define _NTDDTCP_
#pragma warning(push)
#pragma warning(disable:4201) // nameless struct/union
//
// Device Name - this string is the name of the device. It is the name
// that should be passed to NtCreateFile when accessing the device.
//
#define DD_TCP_DEVICE_NAME L"\\Device\\Tcp"
#define DD_UDP_DEVICE_NAME L"\\Device\\Udp"
#define DD_RAW_IP_DEVICE_NAME L"\\Device\\RawIp"
#define DD_TCP_SYMBOLIC_DEVICE_NAME L"\\DosDevices\\Tcp"
//
// Security Filter Support
//
// Security filters provide a mechanism by which the transport protocol
// traffic accepted on IP interfaces may be controlled. Security filtering
// is globally enabled or disabled for all IP interfaces and transports.
// If filtering is enabled, incoming traffic is filtered based on registered
// {interface, protocol, transport value} tuples. The tuples specify
// permissible traffic. All other values will be rejected. For UDP datagrams
// and TCP connections, the transport value is the port number. For RawIP
// datagrams, the transport value is the IP protocol number. An entry exists
// in the filter database for all active interfaces and protocols in the
// system.
//
// The following ioctls may be used to access the security filter
// database. The ioctls may be issued on any TCP/IP device object. All of them
// require Administrator privilege. These ioctls do not update the registry
// parameters used to initialize security filtering when an interface is
// installed.
//
// The TCP_QUERY_SECURITY_FILTER_STATUS ioctl returns the current status of
// security filtering - enabled or disabled.
//
// The TCP_SET_SECURITY_FILTER_STATUS ioctl modifies the status of security
// filtering. Changing the filtering status does not change the contents of
// the filter database.
//
// The following ioctls manipulate the filter database. They operate the same
// whether security filtering is enabled or disabled. If filtering is disabled,
// any changes will take effect only when filtering is enabled.
//
// The TCP_ADD_SECURITY_FILTER ioctl registers an {Interface, Protocol, Value}
// tuple. The TCP_DELETE_SECURITY_FILTER ioctl deregisters an
// {Interface, Protocol, Value} tuple. The TCP_ENUMERATE_SECURITY_FILTER ioctl
// returns the list of {Interface, Protocol, Value} filters currently
// registered.
//
// Each of these ioctls takes an {Interface, Protocol, Value} tuple as an input
// parameter. Zero is a wildcard value. If the Interface or Protocol elements
// are zero, the operation applies to all interfaces or protocols, as
// appropriate. The meaning of a zero Value element depends on the ioctl.
// For an ADD, a zero Value causes all values to be permissible. For a DELETE,
// a zero Value causes all all values to be rejected. In both cases, any
// previously registered values are purged from the database. For an
// ENUMERATE, a zero Value just causes all registered values to be enumerated,
// as opposed to a specific value.
//
// For all ioctls, a return code of STATUS_INVALID_ADDRESS indicates that
// the IP address submitted in the input buffer does not correspond to
// an interface which exists in the system. A code of
// STATUS_INVALID_PARAMETER possibly indicates that the Protocol number
// submitted in the input buffer does not correspond to a transport protocol
// available in the system.
//
//
// Structures used in Security Filter IOCTLs.
//
//
// Structure contained in the input buffer of
// TCP_SET_SECURITY_FILTER_STATUS ioctls and the output buffer of
// TCP_QUERY_SECURITY_FILTER_STATUS ioctls.
//
struct tcp_security_filter_status { ULONG FilteringEnabled; // FALSE if filtering is (to be) disabled.
}; // Any other value indicates that filtering
// is (to be) enabled.
typedef struct tcp_security_filter_status TCP_SECURITY_FILTER_STATUS, *PTCP_SECURITY_FILTER_STATUS;
//
// The TCPSecurityFilterEntry structure, defined in tcpinfo.h, is contained in
// the input buffer of TCP_[ADD|DELETE|ENUMERATE]_SECURITY_FILTER ioctls.
//
//
// The TCPSecurityFilterEnum structure, defined in tcpinfo.h, is contained
// in the output buffer of TCP_ENUMERATE_SECURITY_FILTER ioctls. The output
// buffer passed in the ioctl must be large enough to contain at least this
// structure or the call will fail. The structure is followed immediately in
// the buffer by an array of zero or more TCPSecurityFilterEntry structures.
// The number of TCPSecurityFilterEntry structures is specified by the
// tfe_entries_returned field of the TCPSecurityFilterEnum.
//
typedef struct tcp_blockports_request { unsigned long ReservePorts; // TRUE if reserve; FALSE otherwise
union { unsigned long NumberofPorts; // numberofports to reserve
unsigned long StartHandle; // handle to be used to unreserve
};} TCP_BLOCKPORTS_REQUEST, *PTCP_BLOCKPORTS_REQUEST;
typedef struct tcp_findtcb_request { unsigned long Src; unsigned long Dest; unsigned short DestPort; unsigned short SrcPort;} TCP_FINDTCB_REQUEST, *PTCP_FINDTCB_REQUEST;
typedef struct tcp_findtcb_response { ULONG_PTR tcb_addr; unsigned long tcb_senduna; unsigned long tcb_sendnext; unsigned long tcb_sendmax; unsigned long tcb_sendwin; unsigned long tcb_unacked; unsigned long tcb_maxwin; unsigned long tcb_cwin; unsigned short tcb_mss; unsigned long tcb_rtt; unsigned short tcb_smrtt; unsigned short tcb_rexmitcnt; unsigned short tcb_rexmittimer; unsigned short tcb_rexmit; unsigned long tcb_retrans; unsigned short tcb_state; unsigned long tcb_copied;} TCP_FINDTCB_RESPONSE, *PTCP_FINDTCB_RESPONSE;
//
// TCP/UDP/RawIP IOCTL code definitions
//
#define FSCTL_TCP_BASE FILE_DEVICE_NETWORK
#define _TCP_CTL_CODE(function, method, access) \
CTL_CODE(FSCTL_TCP_BASE, function, method, access)
#define IOCTL_TCP_QUERY_INFORMATION_EX \
_TCP_CTL_CODE(0, METHOD_NEITHER, FILE_ANY_ACCESS)
#define IOCTL_TCP_SET_INFORMATION_EX \
_TCP_CTL_CODE(1, METHOD_BUFFERED, FILE_WRITE_ACCESS)
#define IOCTL_TCP_QUERY_SECURITY_FILTER_STATUS \
_TCP_CTL_CODE(2, METHOD_BUFFERED, FILE_WRITE_ACCESS)
#define IOCTL_TCP_SET_SECURITY_FILTER_STATUS \
_TCP_CTL_CODE(3, METHOD_BUFFERED, FILE_WRITE_ACCESS)
#define IOCTL_TCP_ADD_SECURITY_FILTER \
_TCP_CTL_CODE(4, METHOD_BUFFERED, FILE_WRITE_ACCESS)
#define IOCTL_TCP_DELETE_SECURITY_FILTER \
_TCP_CTL_CODE(5, METHOD_BUFFERED, FILE_WRITE_ACCESS)
#define IOCTL_TCP_ENUMERATE_SECURITY_FILTER \
_TCP_CTL_CODE(6, METHOD_BUFFERED, FILE_WRITE_ACCESS)
#define IOCTL_TCP_RESERVE_PORT_RANGE \
_TCP_CTL_CODE(7, METHOD_BUFFERED, FILE_WRITE_ACCESS)
#define IOCTL_TCP_UNRESERVE_PORT_RANGE \
_TCP_CTL_CODE(8, METHOD_BUFFERED, FILE_WRITE_ACCESS)
#define IOCTL_TCP_BLOCK_PORTS \
_TCP_CTL_CODE(9, METHOD_BUFFERED, FILE_WRITE_ACCESS)
#define IOCTL_TCP_WSH_SET_INFORMATION_EX \
_TCP_CTL_CODE(10, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_TCP_FINDTCB \
_IP_CTL_CODE(21, METHOD_BUFFERED, FILE_ANY_ACCESS)
#pragma warning(pop)
#endif // _NTDDTCP_
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