mirror of https://github.com/acidanthera/audk.git
191 lines
6.2 KiB
C
191 lines
6.2 KiB
C
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/** @file
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Implementation of I/O interfaces between TCP and IpIoLib.
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Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "TcpMain.h"
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/**
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Packet receive callback function provided to IP_IO, used to call
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the proper function to handle the packet received by IP.
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@param[in] Status Result of the receive request.
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@param[in] IcmpErr Valid when Status is EFI_ICMP_ERROR.
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@param[in] NetSession The IP session for the received packet.
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@param[in] Pkt Packet received.
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@param[in] Context The data provided by the user for the received packet when
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the callback is registered in IP_IO_OPEN_DATA::RcvdContext.
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This is an optional parameter that may be NULL.
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**/
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VOID
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EFIAPI
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TcpRxCallback (
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IN EFI_STATUS Status,
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IN UINT8 IcmpErr,
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IN EFI_NET_SESSION_DATA *NetSession,
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IN NET_BUF *Pkt,
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IN VOID *Context OPTIONAL
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)
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{
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if (EFI_SUCCESS == Status) {
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TcpInput (Pkt, &NetSession->Source, &NetSession->Dest, NetSession->IpVersion);
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} else {
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TcpIcmpInput (
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Pkt,
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IcmpErr,
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&NetSession->Source,
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&NetSession->Dest,
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NetSession->IpVersion
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);
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}
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}
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/**
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Send the segment to IP via IpIo function.
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@param[in] Tcb Pointer to the TCP_CB of this TCP instance.
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@param[in] Nbuf Pointer to the TCP segment to be sent.
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@param[in] Src Source address of the TCP segment.
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@param[in] Dest Destination address of the TCP segment.
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@param[in] Version IP_VERSION_4 or IP_VERSION_6
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@retval 0 The segment was sent out successfully.
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@retval -1 The segment failed to send.
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**/
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INTN
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TcpSendIpPacket (
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IN TCP_CB *Tcb,
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IN NET_BUF *Nbuf,
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IN EFI_IP_ADDRESS *Src,
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IN EFI_IP_ADDRESS *Dest,
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IN UINT8 Version
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)
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{
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EFI_STATUS Status;
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IP_IO *IpIo;
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IP_IO_OVERRIDE Override;
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SOCKET *Sock;
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VOID *IpSender;
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TCP_PROTO_DATA *TcpProto;
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if (NULL == Tcb) {
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IpIo = NULL;
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IpSender = IpIoFindSender (&IpIo, Version, Src);
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if (IpSender == NULL) {
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DEBUG ((EFI_D_WARN, "TcpSendIpPacket: No appropriate IpSender.\n"));
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return -1;
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}
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if (Version == IP_VERSION_6) {
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//
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// It's tricky here. EFI IPv6 Spec don't allow an instance overriding the
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// destination address if the dest is already specified through the
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// configuration data. Here we get the IpIo we need and use the default IP
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// instance in this IpIo to send the packet. The dest address is configured
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// to be the unspecified address for the default IP instance.
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//
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IpSender = NULL;
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}
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} else {
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Sock = Tcb->Sk;
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TcpProto = (TCP_PROTO_DATA *) Sock->ProtoReserved;
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IpIo = TcpProto->TcpService->IpIo;
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IpSender = Tcb->IpInfo;
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if (Version == IP_VERSION_6) {
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//
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// It's IPv6 and this TCP segment belongs to a solid TCB, in such case
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// the destination address can't be overridden, so reset the Dest to NULL.
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//
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Dest = NULL;
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}
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}
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ASSERT (Version == IpIo->IpVersion);
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if (Version == IP_VERSION_4) {
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Override.Ip4OverrideData.TypeOfService = 0;
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Override.Ip4OverrideData.TimeToLive = 255;
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Override.Ip4OverrideData.DoNotFragment = FALSE;
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Override.Ip4OverrideData.Protocol = EFI_IP_PROTO_TCP;
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ZeroMem (&Override.Ip4OverrideData.GatewayAddress, sizeof (EFI_IPv4_ADDRESS));
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CopyMem (&Override.Ip4OverrideData.SourceAddress, Src, sizeof (EFI_IPv4_ADDRESS));
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} else {
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Override.Ip6OverrideData.Protocol = EFI_IP_PROTO_TCP;
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Override.Ip6OverrideData.HopLimit = 255;
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Override.Ip6OverrideData.FlowLabel = 0;
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}
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Status = IpIoSend (IpIo, Nbuf, IpSender, NULL, NULL, Dest, &Override);
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "TcpSendIpPacket: return %r error\n", Status));
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return -1;
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}
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return 0;
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}
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/**
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Refresh the remote peer's Neighbor Cache State if already exists.
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@param[in] Tcb Pointer to the TCP_CB of this TCP instance.
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@param[in] Neighbor Source address of the TCP segment.
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@param[in] Timeout Time in 100-ns units that this entry will remain
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in the neighbor cache. A value of zero means that
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the entry is permanent. A value of non-zero means
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that the entry is dynamic and will be deleted
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after Timeout.
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@retval EFI_SUCCESS Successfully updated the neighbor relationship.
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@retval EFI_NOT_STARTED The IpIo is not configured.
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@retval EFI_INVALID_PARAMETER Any input parameter is invalid.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate some resources.
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@retval EFI_NOT_FOUND This entry is not in the neighbor table.
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**/
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EFI_STATUS
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Tcp6RefreshNeighbor (
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IN TCP_CB *Tcb,
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IN EFI_IP_ADDRESS *Neighbor,
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IN UINT32 Timeout
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)
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{
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IP_IO *IpIo;
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SOCKET *Sock;
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TCP_PROTO_DATA *TcpProto;
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if (NULL == Tcb) {
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IpIo = NULL;
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IpIoFindSender (&IpIo, IP_VERSION_6, Neighbor);
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if (IpIo == NULL) {
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DEBUG ((EFI_D_WARN, "Tcp6AddNeighbor: No appropriate IpIo.\n"));
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return EFI_NOT_STARTED;
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}
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} else {
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Sock = Tcb->Sk;
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TcpProto = (TCP_PROTO_DATA *) Sock->ProtoReserved;
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IpIo = TcpProto->TcpService->IpIo;
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}
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return IpIoRefreshNeighbor (IpIo, Neighbor, Timeout);
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}
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