777 lines
27 KiB
C
777 lines
27 KiB
C
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/********************************************************************/
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/** Microsoft LAN Manager **/
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/** Copyright(c) Microsoft Corp., 1990-1993 **/
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/********************************************************************/
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/* :ts=4 */
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//** RAW.C - Raw IP interface code.
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//
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// This file contains the code for the Raw IP interface functions,
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// principally send and receive datagram.
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//
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#include "precomp.h"
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#include "addr.h"
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#include "raw.h"
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#include "tlcommon.h"
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#include "info.h"
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#include "tcpcfg.h"
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#include "secfltr.h"
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#include "udp.h"
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#define NO_TCP_DEFS 1
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#include "tcpdeb.h"
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#define PROT_IGMP 2
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#define PROT_RSVP 46 // Protocol number for RSVP
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#ifdef POOL_TAGGING
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#ifdef ExAllocatePool
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#undef ExAllocatePool
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#endif
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#define ExAllocatePool(type, size) ExAllocatePoolWithTag(type, size, 'rPCT')
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#ifndef CTEAllocMem
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#error "CTEAllocMem is not already defined - will override tagging"
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#else
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#undef CTEAllocMem
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#endif
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#define CTEAllocMem(size) ExAllocatePoolWithTag(NonPagedPool, size, 'rPCT')
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#endif // POOL_TAGGING
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void *RawProtInfo = NULL;
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extern IPInfo LocalNetInfo;
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//** RawSend - Send a datagram.
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//
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// The real send datagram routine. We assume that the busy bit is
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// set on the input AddrObj, and that the address of the SendReq
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// has been verified.
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//
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// We start by sending the input datagram, and we loop until there's
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// nothing left on the send q.
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//
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// Input: SrcAO - Pointer to AddrObj doing the send.
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// SendReq - Pointer to sendreq describing send.
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//
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// Returns: Nothing
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//
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void
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RawSend(AddrObj * SrcAO, DGSendReq * SendReq)
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{
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PNDIS_BUFFER RawBuffer;
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UDPHeader *UH;
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CTELockHandle AOHandle;
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RouteCacheEntry *RCE; // RCE used for each send.
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IPAddr SrcAddr; // Source address IP thinks we should
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// use.
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uchar DestType; // Type of destination address.
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IP_STATUS SendStatus; // Status of send attempt.
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ushort MSS;
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uint AddrValid;
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IPOptInfo OptInfo;
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IPAddr OrigSrc;
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uchar protocol;
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CTEStructAssert(SrcAO, ao);
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ASSERT(SrcAO->ao_usecnt != 0);
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protocol = SrcAO->ao_prot;
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IF_TCPDBG(TCP_DEBUG_RAW) {
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TCPTRACE((
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"RawSend called, prot %u\n", protocol
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));
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}
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//* Loop while we have something to send, and can get
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// resources to send.
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for (;;) {
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CTEStructAssert(SendReq, dsr);
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// Make sure we have a Raw header buffer for this send. If we
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// don't, try to get one.
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if ((RawBuffer = SendReq->dsr_header) == NULL) {
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// Don't have one, so try to get one.
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RawBuffer = GetDGHeader(&UH);
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if (RawBuffer != NULL)
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SendReq->dsr_header = RawBuffer;
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else {
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// Couldn't get a header buffer. Push the send request
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// back on the queue, and queue the addr object for when
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// we get resources.
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CTEGetLock(&SrcAO->ao_lock, &AOHandle);
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PUSHQ(&SrcAO->ao_sendq, &SendReq->dsr_q);
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PutPendingQ(SrcAO);
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CTEFreeLock(&SrcAO->ao_lock, AOHandle);
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return;
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}
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}
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// At this point, we have the buffer we need. Call IP to get an
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// RCE (along with the source address if we need it), then
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// send the data.
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ASSERT(RawBuffer != NULL);
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if (!CLASSD_ADDR(SendReq->dsr_addr)) {
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// This isn't a multicast send, so we'll use the ordinary
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// information.
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OrigSrc = SrcAO->ao_addr;
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OptInfo = SrcAO->ao_opt;
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} else {
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OrigSrc = SrcAO->ao_mcastaddr;
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OptInfo = SrcAO->ao_mcastopt;
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if (SrcAO->ao_opt.ioi_options &&
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(*SrcAO->ao_opt.ioi_options == IP_OPT_ROUTER_ALERT)) {
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//Temporarily point to ao_opt options to satisfy
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//RFC 2113 (router alerts goes onmcast address too)
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OptInfo.ioi_options = SrcAO->ao_opt.ioi_options;
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OptInfo.ioi_optlength = SrcAO->ao_opt.ioi_optlength;
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}
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}
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ASSERT(!(SrcAO->ao_flags & AO_DHCP_FLAG));
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if (SrcAO->ao_opt.ioi_ucastif) {
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// srcaddr = address the socket is bound to
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SrcAddr = SrcAO->ao_addr;
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// go thru slow path
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RCE = NULL;
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} else if ((OptInfo.ioi_mcastif) && CLASSD_ADDR(SendReq->dsr_addr)) {
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// mcast_if is set and this is a mcast send
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ASSERT(IP_ADDR_EQUAL(OrigSrc, NULL_IP_ADDR));
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SrcAddr = (*LocalNetInfo.ipi_isvalidindex) (OptInfo.ioi_mcastif);
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// go thru slow path
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RCE = NULL;
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} else {
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SrcAddr = (*LocalNetInfo.ipi_openrce) (SendReq->dsr_addr,
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OrigSrc, &RCE, &DestType, &MSS, &OptInfo);
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}
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AddrValid = !IP_ADDR_EQUAL(SrcAddr, NULL_IP_ADDR);
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if (AddrValid) {
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// The OpenRCE worked. Send it.
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if (!IP_ADDR_EQUAL(OrigSrc, NULL_IP_ADDR))
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SrcAddr = OrigSrc;
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NdisAdjustBufferLength(RawBuffer, 0);
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NDIS_BUFFER_LINKAGE(RawBuffer) = SendReq->dsr_buffer;
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// Now send the packet.
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IF_TCPDBG(TCP_DEBUG_RAW) {
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TCPTRACE(("RawSend transmitting\n"));
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}
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UStats.us_outdatagrams++;
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SendStatus = (*LocalNetInfo.ipi_xmit) (RawProtInfo, SendReq,
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RawBuffer, (uint) SendReq->dsr_size, SendReq->dsr_addr, SrcAddr,
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&OptInfo, RCE, protocol, SendReq->dsr_context);
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// closerce will just return if RCE is NULL
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(*LocalNetInfo.ipi_closerce) (RCE);
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// If it completed immediately, give it back to the user.
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// Otherwise we'll complete it when the SendComplete happens.
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// Currently, we don't map the error code from this call - we
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// might need to in the future.
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if (SendStatus != IP_PENDING)
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DGSendComplete(SendReq, RawBuffer, SendStatus);
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} else {
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TDI_STATUS Status;
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if (DestType == DEST_INVALID)
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Status = TDI_BAD_ADDR;
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else
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Status = TDI_DEST_UNREACHABLE;
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// Complete the request with an error.
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(*SendReq->dsr_rtn) (SendReq->dsr_context, Status, 0);
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// Now free the request.
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SendReq->dsr_rtn = NULL;
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DGSendComplete(SendReq, RawBuffer, IP_SUCCESS);
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}
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CTEGetLock(&SrcAO->ao_lock, &AOHandle);
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if (!EMPTYQ(&SrcAO->ao_sendq)) {
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DEQUEUE(&SrcAO->ao_sendq, SendReq, DGSendReq, dsr_q);
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CTEFreeLock(&SrcAO->ao_lock, AOHandle);
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} else {
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CLEAR_AO_REQUEST(SrcAO, AO_SEND);
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CTEFreeLock(&SrcAO->ao_lock, AOHandle);
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return;
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}
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}
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}
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//* RawDeliver - Deliver a datagram to a user.
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//
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// This routine delivers a datagram to a Raw user. We're called with
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// the AddrObj to deliver on, and with the AddrObjTable lock held.
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// We try to find a receive on the specified AddrObj, and if we do
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// we remove it and copy the data into the buffer. Otherwise we'll
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// call the receive datagram event handler, if there is one. If that
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// fails we'll discard the datagram.
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//
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// Input: RcvAO - AO to receive the datagram.
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// SrcIP - Source IP address of datagram.
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// IPH - IP Header
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// IPHLength - Bytes in IPH.
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// RcvBuf - The IPReceive buffer containing the data.
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// RcvSize - Size received, including the Raw header.
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// TableHandle - Lock handle for AddrObj table.
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//
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// Returns: Nothing.
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//
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void
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RawDeliver(AddrObj * RcvAO, IPAddr SrcIP, IPHeader UNALIGNED * IPH,
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uint IPHLength, IPRcvBuf * RcvBuf, uint RcvSize, IPOptInfo * OptInfo,
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CTELockHandle TableHandle, DGDeliverInfo *DeliverInfo)
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{
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Queue *CurrentQ;
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CTELockHandle AOHandle;
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DGRcvReq *RcvReq;
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uint BytesTaken = 0;
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uchar AddressBuffer[TCP_TA_SIZE];
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uint RcvdSize;
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EventRcvBuffer *ERB = NULL;
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int BufferSize = 0;
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PVOID BufferToSend = NULL;
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CTEStructAssert(RcvAO, ao);
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CTEGetLock(&RcvAO->ao_lock, &AOHandle);
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CTEFreeLock(&AddrObjTableLock.Lock, AOHandle);
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if (AO_VALID(RcvAO)) {
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if ((DeliverInfo->Flags & IS_BCAST) && (DeliverInfo->Flags & SRC_LOCAL)
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&& (RcvAO->ao_mcast_loop == 0)) {
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goto loop_exit;
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}
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IF_TCPDBG(TCP_DEBUG_RAW) {
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TCPTRACE((
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"Raw delivering %u byte header + %u data bytes to AO %lx\n",
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IPHLength, RcvSize, RcvAO
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));
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}
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CurrentQ = QHEAD(&RcvAO->ao_rcvq);
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// Walk the list, looking for a receive buffer that matches.
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while (CurrentQ != QEND(&RcvAO->ao_rcvq)) {
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RcvReq = QSTRUCT(DGRcvReq, CurrentQ, drr_q);
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CTEStructAssert(RcvReq, drr);
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// If this request is a wildcard request, or matches the source IP
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// address, deliver it.
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if (IP_ADDR_EQUAL(RcvReq->drr_addr, NULL_IP_ADDR) ||
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IP_ADDR_EQUAL(RcvReq->drr_addr, SrcIP)) {
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TDI_STATUS Status;
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PNDIS_BUFFER DestBuf = RcvReq->drr_buffer;
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uint DestOffset = 0;
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// Remove this from the queue.
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REMOVEQ(&RcvReq->drr_q);
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// We're done. We can free the AddrObj lock now.
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CTEFreeLock(&RcvAO->ao_lock, TableHandle);
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IF_TCPDBG(TCP_DEBUG_RAW) {
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TCPTRACE(("Copying to posted receive\n"));
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}
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// Copy the header
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DestBuf = CopyFlatToNdis(DestBuf, (uchar *) IPH, IPHLength,
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&DestOffset, &RcvdSize);
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// Copy the data and then complete the request.
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RcvdSize += CopyRcvToNdis(RcvBuf, DestBuf,
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RcvSize, 0, DestOffset);
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ASSERT(RcvdSize <= RcvReq->drr_size);
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IF_TCPDBG(TCP_DEBUG_RAW) {
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TCPTRACE(("Copied %u bytes\n", RcvdSize));
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}
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Status = UpdateConnInfo(RcvReq->drr_conninfo, OptInfo,
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SrcIP, 0);
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UStats.us_indatagrams++;
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(*RcvReq->drr_rtn) (RcvReq->drr_context, Status, RcvdSize);
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FreeDGRcvReq(RcvReq);
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return;
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}
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// Either the IP address or the port didn't match. Get the next
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// one.
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CurrentQ = QNEXT(CurrentQ);
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}
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// We've walked the list, and not found a buffer. Call the recv.
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// handler now.
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if (RcvAO->ao_rcvdg != NULL) {
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PRcvDGEvent RcvEvent = RcvAO->ao_rcvdg;
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PVOID RcvContext = RcvAO->ao_rcvdgcontext;
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TDI_STATUS RcvStatus;
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CTELockHandle OldLevel;
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uint IndicateSize;
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uint DestOffset;
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PNDIS_BUFFER DestBuf;
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ULONG Flags = TDI_RECEIVE_COPY_LOOKAHEAD;
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uchar *TempBuf = NULL;
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ulong TempBufLen = 0;
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REF_AO(RcvAO);
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CTEFreeLock(&RcvAO->ao_lock, TableHandle);
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BuildTDIAddress(AddressBuffer, SrcIP, 0);
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IndicateSize = IPHLength;
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if (((uchar *) IPH + IPHLength) == RcvBuf->ipr_buffer) {
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//
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// The header is contiguous with the data
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//
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IndicateSize += RcvBuf->ipr_size;
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IF_TCPDBG(TCP_DEBUG_RAW) {
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TCPTRACE(("RawRcv: header & data are contiguous\n"));
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}
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} else {
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//if totallength is less than 128,
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//put it on a staging buffer
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TempBufLen = 128;
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if ((IPHLength + RcvSize) < 128) {
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TempBufLen = IPHLength + RcvSize;
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}
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TempBuf = CTEAllocMem(TempBufLen);
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if (TempBuf) {
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|
|
RtlCopyMemory(TempBuf, (uchar *) IPH, IPHLength);
|
||
|
|
|
||
|
|
RtlCopyMemory((TempBuf + IPHLength), RcvBuf->ipr_buffer, (TempBufLen - IPHLength));
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
IF_TCPDBG(TCP_DEBUG_RAW) {
|
||
|
|
TCPTRACE(("Indicating %u bytes\n", IndicateSize));
|
||
|
|
}
|
||
|
|
|
||
|
|
UStats.us_indatagrams++;
|
||
|
|
if (DeliverInfo->Flags & IS_BCAST) {
|
||
|
|
// This flag is true if this is a multicast, subnet broadcast,
|
||
|
|
// or broadcast. We need to differentiate to set the right
|
||
|
|
// receive flags.
|
||
|
|
//
|
||
|
|
if (!CLASSD_ADDR(DeliverInfo->DestAddr)) {
|
||
|
|
Flags |= TDI_RECEIVE_BROADCAST;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// If the IP_PKTINFO option was set, then create the control
|
||
|
|
// information to be passed to the handler. Currently only one
|
||
|
|
// such option exists, so only one ancillary data object is
|
||
|
|
// created. We should be able to support an array of them as
|
||
|
|
// more options are added.
|
||
|
|
//
|
||
|
|
if (AO_PKTINFO(RcvAO)) {
|
||
|
|
BufferToSend = DGFillIpPktInfo(DeliverInfo->DestAddr,
|
||
|
|
DeliverInfo->LocalAddr,
|
||
|
|
&BufferSize);
|
||
|
|
if (BufferToSend) {
|
||
|
|
// Set the receive flag so the receive handler knows
|
||
|
|
// we are passing up control info.
|
||
|
|
//
|
||
|
|
Flags |= TDI_RECEIVE_CONTROL_INFO;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (TempBuf) {
|
||
|
|
|
||
|
|
RcvStatus = (*RcvEvent) (RcvContext, TCP_TA_SIZE,
|
||
|
|
(PTRANSPORT_ADDRESS) AddressBuffer,
|
||
|
|
BufferSize,
|
||
|
|
BufferToSend, Flags,
|
||
|
|
TempBufLen,
|
||
|
|
IPHLength + RcvSize, &BytesTaken,
|
||
|
|
(uchar *) TempBuf, &ERB);
|
||
|
|
|
||
|
|
CTEFreeMem(TempBuf);
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
RcvStatus = (*RcvEvent) (RcvContext, TCP_TA_SIZE,
|
||
|
|
(PTRANSPORT_ADDRESS) AddressBuffer,
|
||
|
|
BufferSize, BufferToSend, Flags,
|
||
|
|
IndicateSize,
|
||
|
|
IPHLength + RcvSize, &BytesTaken,
|
||
|
|
(uchar *) IPH, &ERB);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (BufferToSend) {
|
||
|
|
ExFreePool(BufferToSend);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (RcvStatus == TDI_MORE_PROCESSING) {
|
||
|
|
|
||
|
|
ASSERT(ERB != NULL);
|
||
|
|
|
||
|
|
// We were passed back a receive buffer. Copy the data in now.
|
||
|
|
|
||
|
|
// He can't have taken more than was in the indicated
|
||
|
|
// buffer, but in debug builds we'll check to make sure.
|
||
|
|
|
||
|
|
ASSERT(BytesTaken <= RcvBuf->ipr_size);
|
||
|
|
|
||
|
|
IF_TCPDBG(TCP_DEBUG_RAW) {
|
||
|
|
TCPTRACE(("ind took %u bytes\n", BytesTaken));
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
#if !MILLEN
|
||
|
|
PIO_STACK_LOCATION IrpSp;
|
||
|
|
PTDI_REQUEST_KERNEL_RECEIVEDG DatagramInformation;
|
||
|
|
|
||
|
|
IrpSp = IoGetCurrentIrpStackLocation(ERB);
|
||
|
|
DatagramInformation = (PTDI_REQUEST_KERNEL_RECEIVEDG)
|
||
|
|
& (IrpSp->Parameters);
|
||
|
|
|
||
|
|
DestBuf = ERB->MdlAddress;
|
||
|
|
#else // !MILLEN
|
||
|
|
DestBuf = ERB->erb_buffer;
|
||
|
|
#endif // MILLEN
|
||
|
|
DestOffset = 0;
|
||
|
|
|
||
|
|
if (BytesTaken < IPHLength) {
|
||
|
|
|
||
|
|
// Copy the rest of the IP header
|
||
|
|
DestBuf = CopyFlatToNdis(
|
||
|
|
DestBuf,
|
||
|
|
(uchar *) IPH + BytesTaken,
|
||
|
|
IPHLength - BytesTaken,
|
||
|
|
&DestOffset,
|
||
|
|
&RcvdSize
|
||
|
|
);
|
||
|
|
|
||
|
|
BytesTaken = 0;
|
||
|
|
} else {
|
||
|
|
BytesTaken -= IPHLength;
|
||
|
|
RcvdSize = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Copy the data
|
||
|
|
RcvdSize += CopyRcvToNdis(
|
||
|
|
RcvBuf,
|
||
|
|
DestBuf,
|
||
|
|
RcvSize - BytesTaken,
|
||
|
|
BytesTaken,
|
||
|
|
DestOffset
|
||
|
|
);
|
||
|
|
|
||
|
|
IF_TCPDBG(TCP_DEBUG_RAW) {
|
||
|
|
TCPTRACE(("Copied %u bytes\n", RcvdSize));
|
||
|
|
}
|
||
|
|
|
||
|
|
#if !MILLEN
|
||
|
|
//
|
||
|
|
// Update the return address info
|
||
|
|
//
|
||
|
|
RcvStatus = UpdateConnInfo(
|
||
|
|
DatagramInformation->ReturnDatagramInformation,
|
||
|
|
OptInfo, SrcIP, 0);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Complete the IRP.
|
||
|
|
//
|
||
|
|
ERB->IoStatus.Information = RcvdSize;
|
||
|
|
ERB->IoStatus.Status = RcvStatus;
|
||
|
|
IoCompleteRequest(ERB, 2);
|
||
|
|
#else // !MILLEN
|
||
|
|
//
|
||
|
|
// Call the completion routine.
|
||
|
|
//
|
||
|
|
(*ERB->erb_rtn) (ERB->erb_context, TDI_SUCCESS, RcvdSize);
|
||
|
|
#endif // MILLEN
|
||
|
|
}
|
||
|
|
|
||
|
|
} else {
|
||
|
|
ASSERT(
|
||
|
|
(RcvStatus == TDI_SUCCESS) ||
|
||
|
|
(RcvStatus == TDI_NOT_ACCEPTED)
|
||
|
|
);
|
||
|
|
|
||
|
|
IF_TCPDBG(TCP_DEBUG_RAW) {
|
||
|
|
TCPTRACE((
|
||
|
|
"Data %s taken\n",
|
||
|
|
(RcvStatus == TDI_SUCCESS) ? "all" : "not"
|
||
|
|
));
|
||
|
|
}
|
||
|
|
|
||
|
|
ASSERT(ERB == NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
DELAY_DEREF_AO(RcvAO);
|
||
|
|
|
||
|
|
return;
|
||
|
|
|
||
|
|
} else
|
||
|
|
UStats.us_inerrors++;
|
||
|
|
|
||
|
|
// When we get here, we didn't have a buffer to put this data into.
|
||
|
|
// Fall through to the return case.
|
||
|
|
} else
|
||
|
|
UStats.us_inerrors++;
|
||
|
|
|
||
|
|
loop_exit:
|
||
|
|
|
||
|
|
CTEFreeLock(&RcvAO->ao_lock, TableHandle);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//* RawRcv - Receive a Raw datagram.
|
||
|
|
//
|
||
|
|
// The routine called by IP when a Raw datagram arrived. We
|
||
|
|
// look up the port/local address pair in our address table,
|
||
|
|
// and deliver the data to a user if we find one. For broadcast
|
||
|
|
// frames we may deliver it to multiple users.
|
||
|
|
//
|
||
|
|
// Entry: IPContext - IPContext identifying physical i/f that
|
||
|
|
// received the data.
|
||
|
|
// Dest - IPAddr of destionation.
|
||
|
|
// Src - IPAddr of source.
|
||
|
|
// LocalAddr - Local address of network which caused this to be
|
||
|
|
// received.
|
||
|
|
// SrcAddr - Address of local interface which received the packet
|
||
|
|
// IPH - IP Header.
|
||
|
|
// IPHLength - Bytes in IPH.
|
||
|
|
// RcvBuf - Pointer to receive buffer chain containing data.
|
||
|
|
// Size - Size in bytes of data received.
|
||
|
|
// IsBCast - Boolean indicator of whether or not this came in as
|
||
|
|
// a bcast.
|
||
|
|
// Protocol - Protocol this came in on - should be Raw.
|
||
|
|
// OptInfo - Pointer to info structure for received options.
|
||
|
|
//
|
||
|
|
// Returns: Status of reception. Anything other than IP_SUCCESS will cause
|
||
|
|
// IP to send a 'port unreachable' message.
|
||
|
|
//
|
||
|
|
IP_STATUS
|
||
|
|
RawRcv(void *IPContext, IPAddr Dest, IPAddr Src, IPAddr LocalAddr,
|
||
|
|
IPAddr SrcAddr, IPHeader UNALIGNED * IPH, uint IPHLength, IPRcvBuf * RcvBuf,
|
||
|
|
uint Size, uchar IsBCast, uchar Protocol, IPOptInfo * OptInfo)
|
||
|
|
{
|
||
|
|
CTELockHandle AOTableHandle;
|
||
|
|
AddrObj *ReceiveingAO;
|
||
|
|
uchar SrcType, DestType;
|
||
|
|
AOSearchContextEx Search;
|
||
|
|
IP_STATUS Status = IP_DEST_PROT_UNREACHABLE;
|
||
|
|
ulong IsLocal = 0;
|
||
|
|
uint IfIndex;
|
||
|
|
uint Deliver;
|
||
|
|
DGDeliverInfo DeliverInfo = {0};
|
||
|
|
|
||
|
|
IF_TCPDBG(TCP_DEBUG_RAW) {
|
||
|
|
TCPTRACE(("RawRcv prot %u size %u\n", IPH->iph_protocol, Size));
|
||
|
|
}
|
||
|
|
|
||
|
|
SrcType = (*LocalNetInfo.ipi_getaddrtype) (Src);
|
||
|
|
DestType = (*LocalNetInfo.ipi_getaddrtype) (Dest);
|
||
|
|
|
||
|
|
if (SrcType == DEST_LOCAL) {
|
||
|
|
DeliverInfo.Flags |= SRC_LOCAL;
|
||
|
|
}
|
||
|
|
IfIndex = (*LocalNetInfo.ipi_getifindexfromnte) (IPContext, IF_CHECK_NONE);
|
||
|
|
|
||
|
|
// The following code relies on DEST_INVALID being a broadcast dest type.
|
||
|
|
// If this is changed the code here needs to change also.
|
||
|
|
if (IS_BCAST_DEST(SrcType)) {
|
||
|
|
if (!IP_ADDR_EQUAL(Src, NULL_IP_ADDR) || !IsBCast) {
|
||
|
|
UStats.us_inerrors++;
|
||
|
|
return IP_SUCCESS; // Bad src address.
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Set the rest of our DeliverInfo for RawDeliver to consume.
|
||
|
|
//
|
||
|
|
DeliverInfo.Flags |= IsBCast ? IS_BCAST : 0;
|
||
|
|
DeliverInfo.LocalAddr = LocalAddr;
|
||
|
|
DeliverInfo.DestAddr = Dest;
|
||
|
|
|
||
|
|
// Get the AddrObjTable lock, and then try to find some AddrObj(s) to give
|
||
|
|
// this to. We deliver to all addr objs registered for the protocol and
|
||
|
|
// address.
|
||
|
|
CTEGetLock(&AddrObjTableLock.Lock, &AOTableHandle);
|
||
|
|
|
||
|
|
|
||
|
|
if (!SecurityFilteringEnabled ||
|
||
|
|
IsPermittedSecurityFilter(SrcAddr, IPContext, PROTOCOL_RAW, Protocol)
|
||
|
|
|| (RcvBuf->ipr_flags & IPR_FLAG_PROMISCUOUS)) {
|
||
|
|
|
||
|
|
ReceiveingAO = GetFirstAddrObjEx(
|
||
|
|
LocalAddr,
|
||
|
|
0, // port is zero
|
||
|
|
Protocol,
|
||
|
|
IfIndex,
|
||
|
|
&Search
|
||
|
|
);
|
||
|
|
|
||
|
|
if (ReceiveingAO != NULL) {
|
||
|
|
do {
|
||
|
|
// Default behavior is not to deliver unless requested
|
||
|
|
Deliver = FALSE;
|
||
|
|
|
||
|
|
// Deliver if socket is bound/joined appropriately
|
||
|
|
// Case 1: bound to destination IP address
|
||
|
|
// Case 2: bound to INADDR_ANY (but not ifindex)
|
||
|
|
// Case 3: bound to ifindex
|
||
|
|
if ((IP_ADDR_EQUAL(ReceiveingAO->ao_addr, LocalAddr) ||
|
||
|
|
((ReceiveingAO->ao_bindindex == 0) &&
|
||
|
|
(IP_ADDR_EQUAL(ReceiveingAO->ao_addr, NULL_IP_ADDR))) ||
|
||
|
|
(ReceiveingAO->ao_bindindex == IfIndex)) &&
|
||
|
|
((ReceiveingAO->ao_prot == IPH->iph_protocol) ||
|
||
|
|
(ReceiveingAO->ao_prot == Protocol) ||
|
||
|
|
(ReceiveingAO->ao_prot == 0))) {
|
||
|
|
switch(DestType) {
|
||
|
|
case DEST_LOCAL:
|
||
|
|
Deliver = TRUE;
|
||
|
|
break;
|
||
|
|
case DEST_MCAST:
|
||
|
|
Deliver = MCastAddrOnAO(ReceiveingAO, Dest, Src);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Otherwise, see whether AO is promiscuous
|
||
|
|
if (!Deliver &&
|
||
|
|
(IfIndex == ReceiveingAO->ao_promis_ifindex)) {
|
||
|
|
if (ReceiveingAO->ao_rcvall &&
|
||
|
|
((ReceiveingAO->ao_prot == IPH->iph_protocol) ||
|
||
|
|
(ReceiveingAO->ao_prot == Protocol) ||
|
||
|
|
(ReceiveingAO->ao_prot == 0))) {
|
||
|
|
Deliver = TRUE;
|
||
|
|
} else if ((ReceiveingAO->ao_rcvall_mcast) &&
|
||
|
|
CLASSD_ADDR(Dest) &&
|
||
|
|
((ReceiveingAO->ao_prot == IPH->iph_protocol) ||
|
||
|
|
(ReceiveingAO->ao_prot == Protocol) ||
|
||
|
|
(ReceiveingAO->ao_prot == 0))) {
|
||
|
|
Deliver = TRUE;
|
||
|
|
} else if ((ReceiveingAO->ao_absorb_rtralert) &&
|
||
|
|
((*LocalNetInfo.ipi_isrtralertpacket) (IPH))) {
|
||
|
|
Deliver = TRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Deliver) {
|
||
|
|
RawDeliver(
|
||
|
|
ReceiveingAO, Src, IPH, IPHLength, RcvBuf, Size,
|
||
|
|
OptInfo, AOTableHandle, &DeliverInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
// RawDeliver frees the lock so we have to get it back
|
||
|
|
CTEGetLock(&AddrObjTableLock.Lock, &AOTableHandle);
|
||
|
|
}
|
||
|
|
ReceiveingAO = GetNextAddrObjEx(&Search);
|
||
|
|
} while (ReceiveingAO != NULL);
|
||
|
|
Status = IP_SUCCESS;
|
||
|
|
} else {
|
||
|
|
UStats.us_noports++;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
CTEFreeLock(&AddrObjTableLock.Lock, AOTableHandle);
|
||
|
|
|
||
|
|
return Status;
|
||
|
|
}
|
||
|
|
|
||
|
|
//* RawStatus - Handle a status indication.
|
||
|
|
//
|
||
|
|
// This is the Raw status handler, called by IP when a status event
|
||
|
|
// occurs. For most of these we do nothing. For certain severe status
|
||
|
|
// events we will mark the local address as invalid.
|
||
|
|
//
|
||
|
|
// Entry: StatusType - Type of status (NET or HW). NET status
|
||
|
|
// is usually caused by a received ICMP
|
||
|
|
// message. HW status indicate a HW
|
||
|
|
// problem.
|
||
|
|
// StatusCode - Code identifying IP_STATUS.
|
||
|
|
// OrigDest - If this is NET status, the original dest. of
|
||
|
|
// DG that triggered it.
|
||
|
|
// OrigSrc - " " " " " , the original src.
|
||
|
|
// Src - IP address of status originator (could be local
|
||
|
|
// or remote).
|
||
|
|
// Param - Additional information for status - i.e. the
|
||
|
|
// param field of an ICMP message.
|
||
|
|
// Data - Data pertaining to status - for NET status, this
|
||
|
|
// is the first 8 bytes of the original DG.
|
||
|
|
//
|
||
|
|
// Returns: Nothing
|
||
|
|
//
|
||
|
|
void
|
||
|
|
RawStatus(uchar StatusType, IP_STATUS StatusCode, IPAddr OrigDest,
|
||
|
|
IPAddr OrigSrc, IPAddr Src, ulong Param, void *Data)
|
||
|
|
{
|
||
|
|
|
||
|
|
IF_TCPDBG(TCP_DEBUG_RAW) {
|
||
|
|
TCPTRACE(("RawStatus called\n"));
|
||
|
|
}
|
||
|
|
|
||
|
|
// If this is a HW status, it could be because we've had an address go
|
||
|
|
// away.
|
||
|
|
if (StatusType == IP_HW_STATUS) {
|
||
|
|
|
||
|
|
if (StatusCode == IP_ADDR_DELETED) {
|
||
|
|
|
||
|
|
// An address has gone away. OrigDest identifies the address.
|
||
|
|
|
||
|
|
//
|
||
|
|
// Delete any security filters associated with this address
|
||
|
|
//
|
||
|
|
DeleteProtocolSecurityFilter(OrigDest, PROTOCOL_RAW);
|
||
|
|
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (StatusCode == IP_ADDR_ADDED) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// An address has materialized. OrigDest identifies the address.
|
||
|
|
// Data is a handle to the IP configuration information for the
|
||
|
|
// interface on which the address is instantiated.
|
||
|
|
//
|
||
|
|
AddProtocolSecurityFilter(OrigDest, PROTOCOL_RAW,
|
||
|
|
(NDIS_HANDLE) Data);
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|