MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Io.c

   1 /** @file
   2
   3 Copyright (c) 2005 - 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14   Tcp4Io.c
  15
  16 Abstract:
  17
  18   I/O interfaces between TCP and IpIo.
  19
  20
  21 **/
  22
  23
  24 #include "Tcp4Main.h"
  25
  26
  27 /**
  28   Packet receive callback function provided to IP_IO, used to call
  29   the proper function to handle the packet received by IP.
  30
  31   @param  Status      Status of the received packet.
  32   @param  IcmpErr     ICMP error number.
  33   @param  NetSession  Pointer to the net session of this packet.
  34   @param  Pkt         Pointer to the recieved packet.
  35   @param  Context     Pointer to the context configured in IpIoOpen(), not used
  36                       now.
  37
  38   @return None
  39
  40 **/
  41 VOID
  42 Tcp4RxCallback (
  43   IN EFI_STATUS                       Status,
  44   IN ICMP_ERROR                       IcmpErr,
  45   IN EFI_NET_SESSION_DATA             *NetSession,
  46   IN NET_BUF                          *Pkt,
  47   IN VOID                             *Context    OPTIONAL
  48   )
  49 {
  50   if (EFI_SUCCESS == Status) {
  51     TcpInput (Pkt, NetSession->Source, NetSession->Dest);
  52   } else {
  53     TcpIcmpInput (Pkt, IcmpErr, NetSession->Source, NetSession->Dest);
  54   }
  55 }
  56
  57
  58 /**
  59   Send the segment to IP via IpIo function.
  60
  61   @param  Tcb         Pointer to the TCP_CB of this TCP instance.
  62   @param  Nbuf        Pointer to the TCP segment to be sent.
  63   @param  Src         Source address of the TCP segment.
  64   @param  Dest        Destination address of the TCP segment.
  65
  66   @retval 0           The segment was sent out successfully.
  67   @retval -1          The segment was failed to send.
  68
  69 **/
  70 INTN
  71 TcpSendIpPacket (
  72   IN TCP_CB    *Tcb,
  73   IN NET_BUF   *Nbuf,
  74   IN UINT32    Src,
  75   IN UINT32    Dest
  76   )
  77 {
  78   EFI_STATUS       Status;
  79   IP_IO            *IpIo;
  80   IP_IO_OVERRIDE   Override;
  81   SOCKET           *Sock;
  82   VOID             *IpSender;
  83   TCP4_PROTO_DATA  *TcpProto;
  84
  85   if (NULL == Tcb) {
  86
  87     IpIo     = NULL;
  88     IpSender = IpIoFindSender (&IpIo, Src);
  89
  90     if (IpSender == NULL) {
  91       TCP4_DEBUG_WARN (("TcpSendIpPacket: No appropriate IpSender.\n"));
  92       return -1;
  93     }
  94   } else {
  95
  96     Sock     = Tcb->Sk;
  97     TcpProto = (TCP4_PROTO_DATA *) Sock->ProtoReserved;
  98     IpIo     = TcpProto->TcpService->IpIo;
  99     IpSender = Tcb->IpInfo;
 100   }
 101
 102   Override.TypeOfService            = 0;
 103   Override.TimeToLive               = 255;
 104   Override.DoNotFragment            = FALSE;
 105   Override.Protocol                 = EFI_IP_PROTO_TCP;
 106   NetZeroMem (&Override.GatewayAddress, sizeof (EFI_IPv4_ADDRESS));
 107   NetCopyMem (&Override.SourceAddress, &Src, sizeof (EFI_IPv4_ADDRESS));
 108
 109   Status = IpIoSend (IpIo, Nbuf, IpSender, NULL, NULL, Dest, &Override);
 110
 111   if (EFI_ERROR (Status)) {
 112     TCP4_DEBUG_ERROR (("TcpSendIpPacket: return %r error\n", Status));
 113     return -1;
 114   }
 115
 116   return 0;
 117 }