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NT4/private/ntos/tdi/tcpip/tcp/info.c

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2001-01-01 00:00:00 +01:00
/********************************************************************/
/** Microsoft LAN Manager **/
/** Copyright(c) Microsoft Corp., 1990-1993 **/
/********************************************************************/
/* :ts=4 */
//** INFO.C - TDI Query/SetInformation routines.
//
// This file contains the code for dealing with TDI Query/Set information
// calls.
//
#include "oscfg.h"
#include "ndis.h"
#include "cxport.h"
#include "ip.h"
#include "tdi.h"
#ifdef VXD
#include "tdivxd.h"
#include "tdistat.h"
#endif
#ifdef NT
#include "tdint.h"
#include "tdistat.h"
#endif
#include "queue.h"
#include "addr.h"
#include "tcp.h"
#include "tcb.h"
#include "tcpconn.h"
#include "tlcommon.h"
#include "info.h"
#include "tdiinfo.h"
#include "tcpcfg.h"
#include "udp.h"
#include "tcpsend.h"
#ifndef UDP_ONLY
#define MY_SERVICE_FLAGS (TDI_SERVICE_CONNECTION_MODE | \
TDI_SERVICE_ORDERLY_RELEASE | \
TDI_SERVICE_CONNECTIONLESS_MODE | \
TDI_SERVICE_ERROR_FREE_DELIVERY | \
TDI_SERVICE_BROADCAST_SUPPORTED | \
TDI_SERVICE_DELAYED_ACCEPTANCE | \
TDI_SERVICE_EXPEDITED_DATA | \
TDI_SERVICE_NO_ZERO_LENGTH)
#else
#define MY_SERVICE_FLAGS (TDI_SERVICE_CONNECTIONLESS_MODE | \
TDI_SERVICE_BROADCAST_SUPPORTED)
#endif
extern uint StartTime;
EXTERNAL_LOCK(AddrObjTableLock)
#ifndef UDP_ONLY
TCPStats TStats;
#endif
UDPStats UStats;
struct ReadTableStruct {
uint (*rts_validate)(void *Context, uint *Valid);
uint (*rts_readnext)(void *Context, void *OutBuf);
};
struct ReadTableStruct ReadAOTable =
{ValidateAOContext, ReadNextAO};
#ifndef UDP_ONLY
struct ReadTableStruct ReadTCBTable =
{ValidateTCBContext, ReadNextTCB};
EXTERNAL_LOCK(TCBTableLock)
#endif
EXTERNAL_LOCK(AddrObjTableLock)
extern IPInfo LocalNetInfo;
struct TDIEntityID *EntityList;
uint EntityCount;
//* TdiQueryInformation - Query Information handler.
//
// The TDI QueryInformation routine. Called when the client wants to
// query information on a connection, the provider as a whole, or to
// get statistics.
//
// Input: Request - The request structure for this command.
// QueryType - The type of query to be performed.
// Buffer - Buffer to place data into.
// BufferSize - Pointer to size in bytes of buffer. On return,
// filled in with bytes copied.
// IsConn - Valid only for TDI_QUERY_ADDRESS_INFO. TRUE
// if we are querying the address info on
// a connection.
//
// Returns: Status of attempt to query information.
//
TDI_STATUS
TdiQueryInformation(PTDI_REQUEST Request, uint QueryType, PNDIS_BUFFER Buffer,
uint *BufferSize, uint IsConn)
{
union {
TDI_CONNECTION_INFO ConnInfo;
TDI_ADDRESS_INFO AddrInfo;
TDI_PROVIDER_INFO ProviderInfo;
TDI_PROVIDER_STATISTICS ProviderStats;
} InfoBuf;
uint InfoSize;
CTELockHandle ConnTableHandle, TCBHandle, AddrHandle, AOHandle;
#ifndef UDP_ONLY
TCPConn *Conn;
TCB *InfoTCB;
#endif
AddrObj *InfoAO;
void *InfoPtr = NULL;
uint Offset;
uint Size;
uint BytesCopied;
switch (QueryType) {
case TDI_QUERY_BROADCAST_ADDRESS:
return TDI_INVALID_QUERY;
break;
case TDI_QUERY_PROVIDER_INFO:
InfoBuf.ProviderInfo.Version = 0x100;
#ifndef UDP_ONLY
InfoBuf.ProviderInfo.MaxSendSize = 0xffffffff;
#else
InfoBuf.ProviderInfo.MaxSendSize = 0;
#endif
InfoBuf.ProviderInfo.MaxConnectionUserData = 0;
InfoBuf.ProviderInfo.MaxDatagramSize = 0xffff - sizeof(UDPHeader);
InfoBuf.ProviderInfo.ServiceFlags = MY_SERVICE_FLAGS;
InfoBuf.ProviderInfo.MinimumLookaheadData = 1;
InfoBuf.ProviderInfo.MaximumLookaheadData = 0xffff;
InfoBuf.ProviderInfo.NumberOfResources = 0;
InfoBuf.ProviderInfo.StartTime.LowPart = StartTime;
InfoBuf.ProviderInfo.StartTime.HighPart = 0;
InfoSize = sizeof(TDI_PROVIDER_INFO);
InfoPtr = &InfoBuf.ProviderInfo;
break;
case TDI_QUERY_ADDRESS_INFO:
InfoSize = sizeof(TDI_ADDRESS_INFO) - sizeof(TRANSPORT_ADDRESS) +
TCP_TA_SIZE;
CTEMemSet(&InfoBuf.AddrInfo, 0, TCP_TA_SIZE);
InfoBuf.AddrInfo.ActivityCount = 1; // Since noone knows what
// this means, we'll set
// it to one.
if (IsConn) {
#ifdef UDP_ONLY
return TDI_INVALID_QUERY;
#else
CTEGetLock(&AddrObjTableLock, &AddrHandle);
CTEGetLock(&ConnTableLock, &ConnTableHandle);
Conn = GetConnFromConnID((uint)Request->Handle.ConnectionContext);
if (Conn != NULL) {
CTEStructAssert(Conn, tc);
InfoTCB = Conn->tc_tcb;
// If we have a TCB we'll
// return information about that TCB. Otherwise we'll return
// info about the address object.
if (InfoTCB != NULL) {
CTEStructAssert(InfoTCB, tcb);
CTEGetLock(&InfoTCB->tcb_lock, &TCBHandle);
CTEFreeLock(&ConnTableLock, TCBHandle);
CTEFreeLock(&AddrObjTableLock, ConnTableHandle);
BuildTDIAddress((uchar *)&InfoBuf.AddrInfo.Address,
InfoTCB->tcb_saddr, InfoTCB->tcb_sport);
CTEFreeLock(&InfoTCB->tcb_lock, AddrHandle);
InfoPtr = &InfoBuf.AddrInfo;
break;
} else {
// No TCB, return info on the AddrObj.
InfoAO = Conn->tc_ao;
if (InfoAO != NULL) {
// We have an AddrObj.
CTEStructAssert(InfoAO, ao);
CTEGetLock(&InfoAO->ao_lock, &AOHandle);
BuildTDIAddress((uchar *)&InfoBuf.AddrInfo.Address,
InfoAO->ao_addr, InfoAO->ao_port);
CTEFreeLock(&InfoAO->ao_lock, AOHandle);
CTEFreeLock(&ConnTableLock, ConnTableHandle);
CTEFreeLock(&AddrObjTableLock, AddrHandle);
InfoPtr = &InfoBuf.AddrInfo;
break;
}
}
}
// Fall through to here when we can't find the connection, or
// the connection isn't associated.
CTEFreeLock(&ConnTableLock, ConnTableHandle);
CTEFreeLock(&AddrObjTableLock, AddrHandle);
return TDI_INVALID_CONNECTION;
break;
#endif
} else {
// Asking for information on an addr. object.
#ifdef VXD
InfoAO = GetIndexedAO((uint)Request->Handle.AddressHandle);
if (InfoAO == NULL)
return TDI_ADDR_INVALID;
#else
InfoAO = Request->Handle.AddressHandle;
#endif
CTEStructAssert(InfoAO, ao);
CTEGetLock(&InfoAO->ao_lock, &AOHandle);
if (!AO_VALID(InfoAO)) {
CTEFreeLock(&InfoAO->ao_lock, AOHandle);
return TDI_ADDR_INVALID;
}
BuildTDIAddress((uchar *)&InfoBuf.AddrInfo.Address,
InfoAO->ao_addr, InfoAO->ao_port);
CTEFreeLock(&InfoAO->ao_lock, AOHandle);
InfoPtr = &InfoBuf.AddrInfo;
break;
}
break;
case TDI_QUERY_CONNECTION_INFO:
#ifndef UDP_ONLY
InfoSize = sizeof(TDI_CONNECTION_INFO);
CTEGetLock(&ConnTableLock, &ConnTableHandle);
Conn = GetConnFromConnID((uint)Request->Handle.ConnectionContext);
if (Conn != NULL) {
CTEStructAssert(Conn, tc);
InfoTCB = Conn->tc_tcb;
// If we have a TCB we'll return the information. Otherwise
// we'll error out.
if (InfoTCB != NULL) {
ulong TotalTime;
ulong BPS, PathBPS;
IP_STATUS IPStatus;
CTEULargeInt TempULargeInt;
CTEStructAssert(InfoTCB, tcb);
CTEGetLock(&InfoTCB->tcb_lock, &TCBHandle);
CTEFreeLock(&ConnTableLock, TCBHandle);
CTEMemSet(&InfoBuf.ConnInfo, 0, sizeof(TDI_CONNECTION_INFO));
InfoBuf.ConnInfo.State = (ulong)InfoTCB->tcb_state;
IPStatus = (*LocalNetInfo.ipi_getpinfo)(InfoTCB->tcb_daddr,
InfoTCB->tcb_saddr, NULL, &PathBPS);
if (IPStatus != IP_SUCCESS) {
InfoBuf.ConnInfo.Throughput.LowPart = 0xFFFFFFFF;
InfoBuf.ConnInfo.Throughput.HighPart = 0xFFFFFFFF;
} else {
InfoBuf.ConnInfo.Throughput.HighPart = 0;
TotalTime = InfoTCB->tcb_totaltime /
(1000 / MS_PER_TICK);
if (TotalTime != 0) {
TempULargeInt.LowPart = InfoTCB->tcb_bcountlow;
TempULargeInt.HighPart = InfoTCB->tcb_bcounthi;
BPS = CTEEnlargedUnsignedDivide(TempULargeInt,
TotalTime, NULL);
InfoBuf.ConnInfo.Throughput.LowPart =
MIN(BPS, PathBPS);
} else
InfoBuf.ConnInfo.Throughput.LowPart = PathBPS;
}
// To figure the delay we use the rexmit timeout. Our
// rexmit timeout is roughly the round trip time plus
// some slop, so we use half of that as the one way delay.
#ifdef VXD
InfoBuf.ConnInfo.Delay.LowPart =
(REXMIT_TO(InfoTCB) * MS_PER_TICK) / 2;
InfoBuf.ConnInfo.Throughput.HighPart = 0;
#else // VXD
InfoBuf.ConnInfo.Delay.LowPart =
(REXMIT_TO(InfoTCB) * MS_PER_TICK) / 2;
InfoBuf.ConnInfo.Delay.HighPart = 0;
//
// Convert milliseconds to 100ns and negate for relative
// time.
//
InfoBuf.ConnInfo.Delay =
RtlExtendedIntegerMultiply(
InfoBuf.ConnInfo.Delay,
10000
);
CTEAssert(InfoBuf.ConnInfo.Delay.HighPart == 0);
InfoBuf.ConnInfo.Delay.QuadPart =
-InfoBuf.ConnInfo.Delay.QuadPart;
#endif // VXD
CTEFreeLock(&InfoTCB->tcb_lock, ConnTableHandle);
InfoPtr = &InfoBuf.ConnInfo;
break;
}
}
// Come through here if we can't find the connection or it has
// no TCB.
CTEFreeLock(&ConnTableLock, ConnTableHandle);
return TDI_INVALID_CONNECTION;
break;
#else // UDP_ONLY
return TDI_INVALID_QUERY;
break;
#endif // UDP_ONLY
case TDI_QUERY_PROVIDER_STATISTICS:
CTEMemSet(&InfoBuf.ProviderStats, 0, sizeof(TDI_PROVIDER_STATISTICS));
InfoBuf.ProviderStats.Version = 0x100;
InfoSize = sizeof(TDI_PROVIDER_STATISTICS);
InfoPtr = &InfoBuf.ProviderStats;
break;
default:
return TDI_INVALID_QUERY;
break;
}
// When we get here, we've got the pointers set up and the information
// filled in.
CTEAssert(InfoPtr != NULL);
Offset = 0;
Size = *BufferSize;
(void)CopyFlatToNdis(Buffer, InfoPtr, MIN(InfoSize, Size), &Offset,
&BytesCopied);
if (Size < InfoSize)
return TDI_BUFFER_OVERFLOW;
else {
*BufferSize = InfoSize;
return TDI_SUCCESS;
}
}
//* TdiSetInformation - Set Information handler.
//
// The TDI SetInformation routine. Currently we don't allow anything to be
// set.
//
// Input: Request - The request structure for this command.
// SetType - The type of set to be performed.
// Buffer - Buffer to set from.
// BufferSize - Size in bytes of buffer.
// IsConn - Valid only for TDI_QUERY_ADDRESS_INFO. TRUE
// if we are setting the address info on
// a connection.
//
// Returns: Status of attempt to set information.
//
TDI_STATUS
TdiSetInformation(PTDI_REQUEST Request, uint SetType, PNDIS_BUFFER Buffer,
uint BufferSize, uint IsConn)
{
return TDI_INVALID_REQUEST;
}
//* TdiAction - Action handler.
//
// The TDI Action routine. Currently we don't support any actions.
//
// Input: Request - The request structure for this command.
// ActionType - The type of action to be performed.
// Buffer - Buffer of action info.
// BufferSize - Size in bytes of buffer.
//
// Returns: Status of attempt to perform action.
//
TDI_STATUS
TdiAction(PTDI_REQUEST Request, uint ActionType, PNDIS_BUFFER Buffer,
uint BufferSize)
{
return TDI_INVALID_REQUEST;
}
//* TdiQueryInfoEx - Extended TDI query information.
//
// This is the new TDI query information handler. We take in a TDIObjectID
// structure, a buffer and length, and some context information, and return
// the requested information if possible.
//
// Input: Request - The request structure for this command.
// ID - The object ID
// Buffer - Pointer to buffer to be filled in.
// Size - Pointer to size in bytes of Buffer. On exit,
// filled in with bytes written.
// Context - Pointer to context buffer.
//
// Returns: Status of attempt to get information.
//
TDI_STATUS
TdiQueryInformationEx(PTDI_REQUEST Request, TDIObjectID *ID,
PNDIS_BUFFER Buffer, uint *Size, void *Context)
{
uint BufferSize = *Size;
uint InfoSize;
void *InfoPtr;
uint Fixed;
CTELockHandle Handle;
#ifndef VXD
CTELock *LockPtr;
#else
#ifdef DEBUG
CTELock *LockPtr;
#endif
#endif
uint Offset = 0;
uchar InfoBuffer[sizeof(TCPConnTableEntry)];
uint BytesRead;
uint Valid;
uint Entity;
uint BytesCopied;
// First check to see if he's querying for list of entities.
Entity = ID->toi_entity.tei_entity;
if (Entity == GENERIC_ENTITY) {
*Size = 0;
if (ID->toi_class != INFO_CLASS_GENERIC ||
ID->toi_type != INFO_TYPE_PROVIDER ||
ID->toi_id != ENTITY_LIST_ID) {
return TDI_INVALID_PARAMETER;
}
// Make sure we have room for it the list in the buffer.
InfoSize = EntityCount * sizeof(TDIEntityID);
if (BufferSize < InfoSize) {
// Not enough room.
return TDI_BUFFER_TOO_SMALL;
}
*Size = InfoSize;
// Copy it in, free our temp. buffer, and return success.
(void)CopyFlatToNdis(Buffer, (uchar *)EntityList, InfoSize, &Offset,
&BytesCopied);
return TDI_SUCCESS;
}
//* Check the level. If it can't be for us, pass it down.
#ifndef UDP_ONLY
if (Entity != CO_TL_ENTITY && Entity != CL_TL_ENTITY) {
#else
if (Entity != CL_TL_ENTITY) {
#endif
// When we support multiple lower entities at this layer we'll have
// to figure out which one to dispatch to. For now, just pass it
// straight down.
return (*LocalNetInfo.ipi_qinfo)(ID, Buffer, Size, Context);
}
if (ID->toi_entity.tei_instance != TL_INSTANCE) {
// We only support a single instance.
return TDI_INVALID_REQUEST;
}
// Zero returned parameters in case of an error below.
*Size = 0;
if (ID->toi_class == INFO_CLASS_GENERIC) {
// This is a generic request.
if (ID->toi_type == INFO_TYPE_PROVIDER && ID->toi_id == ENTITY_TYPE_ID) {
if (BufferSize >= sizeof(uint)) {
*(uint *)&InfoBuffer[0] = (Entity == CO_TL_ENTITY) ? CO_TL_TCP
: CL_TL_UDP;
(void)CopyFlatToNdis(Buffer, InfoBuffer, sizeof(uint), &Offset,
&BytesCopied);
return TDI_SUCCESS;
} else
return TDI_BUFFER_TOO_SMALL;
}
return TDI_INVALID_PARAMETER;
}
if (ID->toi_class == INFO_CLASS_PROTOCOL) {
// Handle protocol specific class of information. For us, this is
// the MIB-2 stuff or the minimal stuff we do for oob_inline support.
#ifndef UDP_ONLY
if (ID->toi_type == INFO_TYPE_CONNECTION) {
TCPConn *Conn;
TCB *QueryTCB;
TCPSocketAMInfo *AMInfo;
CTELockHandle TCBHandle;
if (BufferSize < sizeof(TCPSocketAMInfo) ||
ID->toi_id != TCP_SOCKET_ATMARK)
return TDI_INVALID_PARAMETER;
AMInfo = (TCPSocketAMInfo *)InfoBuffer;
CTEGetLock(&ConnTableLock, &Handle);
Conn = GetConnFromConnID((uint)Request->Handle.ConnectionContext);
if (Conn != NULL) {
CTEStructAssert(Conn, tc);
QueryTCB = Conn->tc_tcb;
if (QueryTCB != NULL) {
CTEStructAssert(QueryTCB, tcb);
CTEGetLock(&QueryTCB->tcb_lock, &TCBHandle);
if ((QueryTCB->tcb_flags & (URG_INLINE | URG_VALID)) ==
(URG_INLINE | URG_VALID)) {
// We're in inline mode, and the urgent data fields are
// valid.
AMInfo->tsa_size = QueryTCB->tcb_urgend -
QueryTCB->tcb_urgstart + 1;
// Rcvnext - pendingcnt is the sequence number of the
// next byte of data that will be delivered to the
// client. Urgend - that value is the offset in the
// data stream of the end of urgent data.
AMInfo->tsa_offset = QueryTCB->tcb_urgend -
(QueryTCB->tcb_rcvnext - QueryTCB->tcb_pendingcnt);
} else {
AMInfo->tsa_size = 0;
AMInfo->tsa_offset = 0;
}
CTEFreeLock(&QueryTCB->tcb_lock, TCBHandle);
*Size = sizeof(TCPSocketAMInfo);
CopyFlatToNdis(Buffer, InfoBuffer, sizeof(TCPSocketAMInfo),
&Offset, &BytesCopied);
return TDI_SUCCESS;
}
}
return TDI_INVALID_PARAMETER;
}
#endif
if (ID->toi_type != INFO_TYPE_PROVIDER)
return TDI_INVALID_PARAMETER;
switch (ID->toi_id) {
case UDP_MIB_STAT_ID:
#if UDP_MIB_STAT_ID != TCP_MIB_STAT_ID
case TCP_MIB_STAT_ID:
#endif
Fixed = TRUE;
if (Entity == CL_TL_ENTITY) {
InfoSize = sizeof(UDPStats);
InfoPtr = &UStats;
} else {
#ifndef UDP_ONLY
InfoSize = sizeof(TCPStats);
InfoPtr = &TStats;
#else
return TDI_INVALID_PARAMETER;
#endif
}
break;
case UDP_MIB_TABLE_ID:
#if UDP_MIB_TABLE_ID != TCP_MIB_TABLE_ID
case TCP_MIB_TABLE_ID:
#endif
Fixed = FALSE;
if (Entity == CL_TL_ENTITY) {
InfoSize = sizeof(UDPEntry);
InfoPtr = &ReadAOTable;
CTEGetLock(&AddrObjTableLock, &Handle);
#ifndef VXD
LockPtr = &AddrObjTableLock;
#else
#ifdef DEBUG
LockPtr = &AddrObjTableLock;
#endif
#endif
} else {
#ifndef UDP_ONLY
InfoSize = sizeof(TCPConnTableEntry);
InfoPtr = &ReadTCBTable;
CTEGetLock(&TCBTableLock, &Handle);
#ifndef VXD
LockPtr = &TCBTableLock;
#else
#ifdef DEBUG
LockPtr = &TCBTableLock;
#endif
#endif
#else
return TDI_INVALID_PARAMETER;
#endif
}
break;
default:
return TDI_INVALID_PARAMETER;
break;
}
if (Fixed) {
if (BufferSize < InfoSize)
return TDI_BUFFER_TOO_SMALL;
*Size = InfoSize;
(void)CopyFlatToNdis(Buffer, InfoPtr, InfoSize, &Offset,
&BytesCopied);
return TDI_SUCCESS;
} else {
struct ReadTableStruct *RTSPtr;
uint ReadStatus;
// Have a variable length (or mult-instance) structure to copy.
// InfoPtr points to the structure describing the routines to
// call to read the table.
// Loop through up to CountWanted times, calling the routine
// each time.
BytesRead = 0;
RTSPtr = InfoPtr;
ReadStatus = (*(RTSPtr->rts_validate))(Context, &Valid);
// If we successfully read something we'll continue. Otherwise
// we'll bail out.
if (!Valid) {
CTEFreeLock(LockPtr, Handle);
return TDI_INVALID_PARAMETER;
}
while (ReadStatus) {
// The invariant here is that there is data in the table to
// read. We may or may not have room for it. So ReadStatus
// is TRUE, and BufferSize - BytesRead is the room left
// in the buffer.
if ((int)(BufferSize - BytesRead) >= (int)InfoSize) {
ReadStatus = (*(RTSPtr->rts_readnext))(Context,
InfoBuffer);
BytesRead += InfoSize;
Buffer = CopyFlatToNdis(Buffer, InfoBuffer, InfoSize,
&Offset, &BytesCopied);
} else
break;
}
*Size = BytesRead;
CTEFreeLock(LockPtr, Handle);
return (!ReadStatus ? TDI_SUCCESS : TDI_BUFFER_OVERFLOW);
}
}
if (ID->toi_class == INFO_CLASS_IMPLEMENTATION) {
// We want to return implementation specific info. For now, error out.
return TDI_INVALID_PARAMETER;
}
return TDI_INVALID_PARAMETER;
}
//* TdiSetInfoEx - Extended TDI set information.
//
// This is the new TDI set information handler. We take in a TDIObjectID
// structure, a buffer and length. We set the object specifed by the ID
// (and possibly by the Request) to the value specified in the buffer.
//
// Input: Request - The request structure for this command.
// ID - The object ID
// Buffer - Pointer to buffer containing value to set.
// Size - Size in bytes of Buffer.
//
// Returns: Status of attempt to get information.
//
TDI_STATUS
TdiSetInformationEx(PTDI_REQUEST Request, TDIObjectID *ID, void *Buffer,
uint Size)
{
TCPConnTableEntry *TCPEntry;
CTELockHandle TableHandle, TCBHandle;
TCB *SetTCB;
uint Entity;
TCPConn *Conn;
TDI_STATUS Status;
//* Check the level. If it can't be for us, pass it down.
Entity = ID->toi_entity.tei_entity;
if (Entity != CO_TL_ENTITY && Entity != CL_TL_ENTITY) {
// Someday we'll have to figure out how to dispatch. For now, just pass
// it down.
return (*LocalNetInfo.ipi_setinfo)(ID, Buffer, Size);
}
if (ID->toi_entity.tei_instance != TL_INSTANCE)
return TDI_INVALID_REQUEST;
if (ID->toi_class == INFO_CLASS_GENERIC) {
// Fill this in when we have generic class defines.
return TDI_INVALID_PARAMETER;
}
//* Now look at the rest of it.
if (ID->toi_class == INFO_CLASS_PROTOCOL) {
// Handle protocol specific class of information. For us, this is
// the MIB-2 stuff, as well as common sockets options,
// and in particular the setting of the state of a TCP connection.
if (ID->toi_type == INFO_TYPE_CONNECTION) {
TCPSocketOption *Option;
uint Flag;
uint Value;
#ifndef UDP_ONLY
// A connection type. Get the connection, and then figure out
// what to do with it.
Status = TDI_INVALID_PARAMETER;
if (Size < sizeof(TCPSocketOption))
return Status;
CTEGetLock(&ConnTableLock, &TableHandle);
Conn = GetConnFromConnID((uint)Request->Handle.ConnectionContext);
if (Conn != NULL) {
CTEStructAssert(Conn, tc);
Status = TDI_SUCCESS;
if (ID->toi_id == TCP_SOCKET_WINDOW) {
// This is a funny option, because it doesn't involve
// flags. Handle this specially.
Option = (TCPSocketOption *)Buffer;
// We don't allow anyone to shrink the window, as this
// gets too weird from a protocol point of view. Also,
// make sure they don't try and set anything too big.
if (Option->tso_value > 0xffff)
Status = TDI_INVALID_PARAMETER;
else if (Option->tso_value > Conn->tc_window ||
Conn->tc_tcb == NULL) {
Conn->tc_flags |= CONN_WINSET;
Conn->tc_window = Option->tso_value;
SetTCB = Conn->tc_tcb;
if (SetTCB != NULL) {
CTEStructAssert(SetTCB, tcb);
CTEGetLock(&SetTCB->tcb_lock, &TCBHandle);
CTEAssert(Option->tso_value > SetTCB->tcb_defaultwin);
if (DATA_RCV_STATE(SetTCB->tcb_state) &&
!CLOSING(SetTCB)) {
SetTCB->tcb_flags |= WINDOW_SET;
SetTCB->tcb_defaultwin = Option->tso_value;
SetTCB->tcb_refcnt++;
CTEFreeLock(&SetTCB->tcb_lock, TCBHandle);
SendACK(SetTCB);
CTEGetLock(&SetTCB->tcb_lock, &TCBHandle);
DerefTCB(SetTCB, TCBHandle);
} else {
CTEFreeLock(&SetTCB->tcb_lock, TCBHandle);
}
}
}
CTEFreeLock(&ConnTableLock, TableHandle);
return Status;
}
Flag = 0;
Option = (TCPSocketOption *)Buffer;
Value = Option->tso_value;
// We have the connection, so figure out which flag to set.
switch (ID->toi_id) {
case TCP_SOCKET_NODELAY:
Value = !Value;
Flag = NAGLING;
break;
case TCP_SOCKET_KEEPALIVE:
Flag = KEEPALIVE;
break;
case TCP_SOCKET_BSDURGENT:
Flag = BSD_URGENT;
break;
case TCP_SOCKET_OOBINLINE:
Flag = URG_INLINE;
break;
default:
Status = TDI_INVALID_PARAMETER;
break;
}
if (Status == TDI_SUCCESS) {
if (Value)
Conn->tc_tcbflags |= Flag;
else
Conn->tc_tcbflags &= ~Flag;
SetTCB = Conn->tc_tcb;
if (SetTCB != NULL) {
CTEStructAssert(SetTCB, tcb);
CTEGetLock(&SetTCB->tcb_lock, &TCBHandle);
if (Value)
SetTCB->tcb_flags |= Flag;
else
SetTCB->tcb_flags &= ~Flag;
if (ID->toi_id == TCP_SOCKET_KEEPALIVE) {
SetTCB->tcb_alive = TCPTime;
SetTCB->tcb_kacount = 0;
}
CTEFreeLock(&SetTCB->tcb_lock, TCBHandle);
}
}
}
CTEFreeLock(&ConnTableLock, TableHandle);
return Status;
#else
return TDI_INVALID_PARAMETER;
#endif
}
if (ID->toi_type == INFO_TYPE_ADDRESS_OBJECT) {
// We're setting information on an address object. This is
// pretty simple.
return SetAddrOptions(Request, ID->toi_id, Size, Buffer);
}
if (ID->toi_type != INFO_TYPE_PROVIDER)
return TDI_INVALID_PARAMETER;
#ifndef UDP_ONLY
if (ID->toi_id == TCP_MIB_TABLE_ID) {
if (Size != sizeof(TCPConnTableEntry))
return TDI_INVALID_PARAMETER;
TCPEntry = (TCPConnTableEntry *)Buffer;
if (TCPEntry->tct_state != TCP_DELETE_TCB)
return TDI_INVALID_PARAMETER;
// We have an apparently valid request. Look up the TCB.
CTEGetLock(&TCBTableLock, &TableHandle);
SetTCB = FindTCB(TCPEntry->tct_localaddr,
TCPEntry->tct_remoteaddr, (ushort)TCPEntry->tct_remoteport,
(ushort)TCPEntry->tct_localport);
// We found him. If he's not closing or closed, close him.
if (SetTCB != NULL) {
CTEGetLock(&SetTCB->tcb_lock, &TCBHandle);
CTEFreeLock(&TCBTableLock, TCBHandle);
// We've got him. Bump his ref. count, and call TryToCloseTCB
// to mark him as closing. Then notify the upper layer client
// of the disconnect.
SetTCB->tcb_refcnt++;
if (SetTCB->tcb_state != TCB_CLOSED && !CLOSING(SetTCB)) {
SetTCB->tcb_flags |= NEED_RST;
TryToCloseTCB(SetTCB, TCB_CLOSE_ABORTED, TableHandle);
CTEGetLock(&SetTCB->tcb_lock, &TableHandle);
if (SetTCB->tcb_state != TCB_TIME_WAIT) {
// Remove him from the TCB, and notify the client.
CTEFreeLock(&SetTCB->tcb_lock, TableHandle);
RemoveTCBFromConn(SetTCB);
NotifyOfDisc(SetTCB, NULL, TDI_CONNECTION_RESET);
CTEGetLock(&SetTCB->tcb_lock, &TableHandle);
}
}
DerefTCB(SetTCB, TableHandle);
return TDI_SUCCESS;
} else {
CTEFreeLock(&TCBTableLock, TableHandle);
return TDI_INVALID_PARAMETER;
}
} else
return TDI_INVALID_PARAMETER;
#else
return TDI_INVALID_PARAMETER;
#endif
}
if (ID->toi_class == INFO_CLASS_IMPLEMENTATION) {
// We want to return implementation specific info. For now, error out.
return TDI_INVALID_REQUEST;
}
return TDI_INVALID_REQUEST;
}
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