235 lines
11 KiB
C
235 lines
11 KiB
C
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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil -*- (for GNU Emacs)
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//
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// Copyright (c) 1985-2000 Microsoft Corporation
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//
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// This file is part of the Microsoft Research IPv6 Network Protocol Stack.
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// You should have received a copy of the Microsoft End-User License Agreement
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// for this software along with this release; see the file "license.txt".
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// If not, please see http://www.research.microsoft.com/msripv6/license.htm,
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// or write to Microsoft Research, One Microsoft Way, Redmond, WA 98052-6399.
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//
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// Abstract:
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//
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// This file contains the definitions of TDI address objects and related
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// constants and structures.
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//
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#define ao_signature 0x20204F41 // 'AO '.
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#define WILDCARD_PORT 0 // 0 means assign a port.
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#define MIN_USER_PORT 1025 // Minimum value for a wildcard port.
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#define MAX_USER_PORT 5000 // Maximim value for a user port.
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#define NUM_USER_PORTS (uint)(MaxUserPort - MIN_USER_PORT + 1)
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#define NETBT_SESSION_PORT 139
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typedef struct AddrObj AddrObj;
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// Datagram transport-specific send function.
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typedef void (*DGSendProc)(AddrObj *SrcAO, void *SendReq);
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//
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// Definition of the structure of an address object. Each object represents
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// a local address, and the IP portion may be a wildcard.
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//
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typedef struct AddrObj {
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#if DBG
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ulong ao_sig;
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#endif
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struct AddrObj *ao_next; // Next address object in chain.
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KSPIN_LOCK ao_lock; // Lock for this object.
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struct AORequest *ao_request; // Pointer to pending request.
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Queue ao_sendq; // Queue of sends waiting for transmit.
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Queue ao_pendq; // Linkage for pending queue.
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Queue ao_rcvq; // Receive queue.
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IPv6Addr ao_addr; // IP address for this address object.
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ulong ao_scope_id; // Scope ID of IP address (0 if none).
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ushort ao_port; // Local port for this address object.
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uchar ao_prot; // Protocol for this AO.
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uchar ao_index; // Index into table of this AO.
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ulong ao_flags; // Flags for this object.
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uint ao_listencnt; // Number of listening connections.
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ushort ao_usecnt; // Count of 'uses' on AO.
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ushort ao_inst; // 'Instance' number of this AO.
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int ao_ucast_hops; // Hop count for unicast packets.
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uint ao_mcast_if; // Our multicast source interface.
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int ao_mcast_hops; // Hop count for multicast packets.
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int ao_mcast_loop; // The multicast loopback state.
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Queue ao_activeq; // Queue of active connections.
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Queue ao_idleq; // Queue of inactive (no TCB) connctns.
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Queue ao_listenq; // Queue of listening connections.
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WORK_QUEUE_ITEM ao_workitem; // Work-queue item to use for this AO.
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PConnectEvent ao_connect; // Connect event handle.
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PVOID ao_conncontext; // Receive DG context.
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PDisconnectEvent ao_disconnect; // Disconnect event routine.
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PVOID ao_disconncontext; // Disconnect event context.
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PErrorEvent ao_error; // Error event routine.
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PVOID ao_errcontext; // Error event context.
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PRcvEvent ao_rcv; // Receive event handler.
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PVOID ao_rcvcontext; // Receive context.
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PRcvDGEvent ao_rcvdg; // Receive DG event handler.
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PVOID ao_rcvdgcontext; // Receive DG context.
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PRcvEvent ao_exprcv; // Expedited receive event handler.
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PVOID ao_exprcvcontext; // Expedited receive context.
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struct AOMCastAddr *ao_mcastlist; // List of active multicast addresses.
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DGSendProc ao_dgsend; // Datagram transport send function.
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PTDI_IND_ERROR_EX ao_errorex; // Error event routine.
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PVOID ao_errorexcontext; // Error event context.
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ushort ao_maxdgsize; // maximum user datagram size.
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ushort ao_udp_cksum_cover; // UDP-Lite checksum coverage.
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ulong ao_owningpid; // Process ID of owner.
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uint* ao_iflist; // List of enabled interfaces.
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} AddrObj;
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#define AO_RCV_HOPLIMIT_FLAG 0x00020000 // Receive HopLimit in aux data.
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// 0x00010000 Reserved for AO_WINSET_FLAG.
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// 0x00008000 Reserved for AO_SCALE_CWIN_FLAG.
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// 0x00004000 Reserved for AO_DEFERRED_FLAG.
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#define AO_PKTINFO_FLAG 0x00002000 // Packet info structure passed in
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// control info (WSARecvMsg).
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#define AO_SHARE_FLAG 0x00001000 // AddrObj can be shared.
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// 0x00000800 Reserved for AO_CONNUDP_FLAG.
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#define AO_HDRINCL_FLAG 0x00000400 // User provides IP header on raw send.
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#define AO_RAW_FLAG 0x00000200 // AO is for a raw endpoint.
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#define AO_DHCP_FLAG 0x00000100 // AO is bound to real 0 address.
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#define AO_VALID_FLAG 0x00000080 // AddrObj is valid.
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#define AO_BUSY_FLAG 0x00000040 // AddrObj is busy (i.e., has it
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// exclusive).
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#define AO_OOR_FLAG 0x00000020 // AddrObj is out of resources, and on
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// either the pending or delayed queue.
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#define AO_QUEUED_FLAG 0x00000010 // AddrObj is on the pending queue.
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// 0x00000008 Reserved for AO_XSUM_FLAG.
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#define AO_SEND_FLAG 0x00000004 // Send is pending.
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#define AO_OPTIONS_FLAG 0x00000002 // Option set pending.
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#define AO_DELETE_FLAG 0x00000001 // Delete pending.
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#define AO_VALID(A) ((A)->ao_flags & AO_VALID_FLAG)
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#define SET_AO_INVALID(A) (A)->ao_flags &= ~AO_VALID_FLAG
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#define AO_BUSY(A) ((A)->ao_flags & AO_BUSY_FLAG)
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#define SET_AO_BUSY(A) (A)->ao_flags |= AO_BUSY_FLAG
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#define CLEAR_AO_BUSY(A) (A)->ao_flags &= ~AO_BUSY_FLAG
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#define AO_OOR(A) ((A)->ao_flags & AO_OOR_FLAG)
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#define SET_AO_OOR(A) (A)->ao_flags |= AO_OOR_FLAG
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#define CLEAR_AO_OOR(A) (A)->ao_flags &= ~AO_OOR_FLAG
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#define AO_QUEUED(A) ((A)->ao_flags & AO_QUEUED_FLAG)
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#define SET_AO_QUEUED(A) (A)->ao_flags |= AO_QUEUED_FLAG
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#define CLEAR_AO_QUEUED(A) (A)->ao_flags &= ~AO_QUEUED_FLAG
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#define AO_REQUEST(A, f) ((A)->ao_flags & f##_FLAG)
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#define SET_AO_REQUEST(A, f) (A)->ao_flags |= f##_FLAG
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#define CLEAR_AO_REQUEST(A, f) (A)->ao_flags &= ~f##_FLAG
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#define AO_PENDING(A) \
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((A)->ao_flags & (AO_DELETE_FLAG | AO_OPTIONS_FLAG | AO_SEND_FLAG))
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#define AO_SHARE(A) ((A)->ao_flags & AO_SHARE_FLAG)
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#define SET_AO_SHARE(A) (A)->ao_flags |= AO_SHARE_FLAG
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#define CLEAR_AO_SHARE(A) (A)->ao_flags &= ~AO_SHARE_FLAG
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#define AO_HDRINCL(A) ((A)->ao_flags & AO_HDRINCL_FLAG)
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#define SET_AO_HDRINCL(A) (A)->ao_flags |= AO_HDRINCL_FLAG
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#define CLEAR_AO_HDRINCL(A) (A)->ao_flags &= ~AO_HDRINCL_FLAG
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#define AO_PKTINFO(A) ((A)->ao_flags & AO_PKTINFO_FLAG)
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#define SET_AO_PKTINFO(A) (A)->ao_flags |= AO_PKTINFO_FLAG
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#define CLEAR_AO_PKTINFO(A) (A)->ao_flags &= ~AO_PKTINFO_FLAG
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#define AO_RCV_HOPLIMIT(A) ((A)->ao_flags & AO_RCV_HOPLIMIT_FLAG)
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#define SET_AO_RCV_HOPLIMIT(A) (A)->ao_flags |= AO_RCV_HOPLIMIT_FLAG
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#define CLEAR_AO_RCV_HOPLIMIT(A) (A)->ao_flags &= ~AO_RCV_HOPLIMIT_FLAG
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//
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// Definition of an address object search context. This is a data structure
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// used when the address object table is to be read sequentially.
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//
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typedef struct AOSearchContext {
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AddrObj *asc_previous; // Previous AO found.
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IPv6Addr asc_addr; // IP address to be found.
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uint asc_scope_id; // Scope id for IP address.
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ushort asc_port; // Port to be found.
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uchar asc_prot; // Protocol.
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uchar asc_pad; // Pad to dword boundary.
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} AOSearchContext;
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//
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// Definition of an AO request structure. There structures are used only for
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// queuing delete and option set requests.
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//
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#define aor_signature 0x20524F41
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typedef struct AORequest {
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#if DBG
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ulong aor_sig;
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#endif
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struct AORequest *aor_next; // Next pointer in chain.
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uint aor_id; // ID for the request.
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uint aor_length; // Length of buffer.
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void *aor_buffer; // Buffer for this request.
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RequestCompleteRoutine aor_rtn; // Complete routine for this request.
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PVOID aor_context; // Request context;
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} AORequest;
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typedef struct AOMCastAddr {
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struct AOMCastAddr *ama_next; // Next in list.
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IPv6Addr ama_addr; // The address.
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uint ama_if; // The interface.
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} AOMCastAddr;
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//
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// External declarations for exported functions.
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//
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extern uint AddrObjTableSize;
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extern AddrObj **AddrObjTable;
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extern AddrObj *GetAddrObj(IPv6Addr *LocalAddr, uint LocalScopeId,
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ushort LocalPort, uchar Prot, AddrObj *PreviousAO,
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Interface* IF);
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extern AddrObj *GetNextAddrObj(AOSearchContext *SearchContext);
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extern AddrObj *GetFirstAddrObj(IPv6Addr *LocalAddr, uint LocalScopeId,
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ushort LocalPort, uchar Prot,
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AOSearchContext *SearchContext);
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extern TDI_STATUS TdiOpenAddress(PTDI_REQUEST Request,
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TRANSPORT_ADDRESS UNALIGNED *AddrList,
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uint Protocol, void *Reuse);
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extern TDI_STATUS TdiCloseAddress(PTDI_REQUEST Request);
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extern TDI_STATUS SetAddrOptions(PTDI_REQUEST Request, uint ID, uint OptLength,
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void *Options);
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extern TDI_STATUS TdiSetEvent(PVOID Handle, int Type, PVOID Handler,
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PVOID Context);
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extern uchar GetAddress(TRANSPORT_ADDRESS UNALIGNED *AddrList,
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IPv6Addr *Addr, ulong *ScopeId, ushort *Port);
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extern int InitAddr(void);
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extern void AddrUnload(void);
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extern void ProcessAORequests(AddrObj *RequestAO);
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extern void DelayDerefAO(AddrObj *RequestAO);
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extern void DerefAO(AddrObj *RequestAO);
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extern void FreeAORequest(AORequest *FreedRequest);
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extern uint ValidateAOContext(void *Context, uint *Valid);
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extern uint ReadNextAO(void *Context, void *OutBuf);
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extern void InvalidateAddrs(IPv6Addr *Addr, uint ScopeId);
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extern uint MCastAddrOnAO(AddrObj *AO, IPv6Addr *Addr);
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extern AOMCastAddr *FindAOMCastAddr(AddrObj *AO, IPv6Addr *Addr, uint IFNo, AOMCastAddr **PrevAMA, BOOLEAN Loose);
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#define GetBestAddrObj(addr, scope, port, prot, if) \
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GetAddrObj(addr, scope, port, prot, NULL, if)
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#define REF_AO(a) (a)->ao_usecnt++
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#define DELAY_DEREF_AO(a) DelayDerefAO((a))
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#define DEREF_AO(a) DerefAO((a))
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#define LOCKED_DELAY_DEREF_AO(a) (a)->ao_usecnt--; \
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\
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if (!(a)->ao_usecnt && !AO_BUSY((a)) && AO_PENDING((a))) { \
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SET_AO_BUSY((a)); \
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ExQueueWorkItem(&(a)->ao_workitem, CriticalWorkQueue); \
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}
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