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- /** @file
- Implementation of I/O interfaces between TCP and IpIoLib.
- Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include "TcpMain.h"
- /**
- Packet receive callback function provided to IP_IO, used to call
- the proper function to handle the packet received by IP.
- @param[in] Status Result of the receive request.
- @param[in] IcmpErr Valid when Status is EFI_ICMP_ERROR.
- @param[in] NetSession The IP session for the received packet.
- @param[in] Pkt Packet received.
- @param[in] Context The data provided by the user for the received packet when
- the callback is registered in IP_IO_OPEN_DATA::RcvdContext.
- This is an optional parameter that may be NULL.
- **/
- VOID
- EFIAPI
- TcpRxCallback (
- IN EFI_STATUS Status,
- IN UINT8 IcmpErr,
- IN EFI_NET_SESSION_DATA *NetSession,
- IN NET_BUF *Pkt,
- IN VOID *Context OPTIONAL
- )
- {
- if (EFI_SUCCESS == Status) {
- TcpInput (Pkt, &NetSession->Source, &NetSession->Dest, NetSession->IpVersion);
- } else {
- TcpIcmpInput (
- Pkt,
- IcmpErr,
- &NetSession->Source,
- &NetSession->Dest,
- NetSession->IpVersion
- );
- }
- }
- /**
- Send the segment to IP via IpIo function.
- @param[in] Tcb Pointer to the TCP_CB of this TCP instance.
- @param[in] Nbuf Pointer to the TCP segment to be sent.
- @param[in] Src Source address of the TCP segment.
- @param[in] Dest Destination address of the TCP segment.
- @param[in] Version IP_VERSION_4 or IP_VERSION_6
- @retval 0 The segment was sent out successfully.
- @retval -1 The segment failed to send.
- **/
- INTN
- TcpSendIpPacket (
- IN TCP_CB *Tcb,
- IN NET_BUF *Nbuf,
- IN EFI_IP_ADDRESS *Src,
- IN EFI_IP_ADDRESS *Dest,
- IN UINT8 Version
- )
- {
- EFI_STATUS Status;
- IP_IO *IpIo;
- IP_IO_OVERRIDE Override;
- SOCKET *Sock;
- VOID *IpSender;
- TCP_PROTO_DATA *TcpProto;
- if (NULL == Tcb) {
- IpIo = NULL;
- IpSender = IpIoFindSender (&IpIo, Version, Src);
- if (IpSender == NULL) {
- DEBUG ((DEBUG_WARN, "TcpSendIpPacket: No appropriate IpSender.\n"));
- return -1;
- }
- if (Version == IP_VERSION_6) {
- //
- // It's tricky here. EFI IPv6 Spec don't allow an instance overriding the
- // destination address if the dest is already specified through the
- // configuration data. Here we get the IpIo we need and use the default IP
- // instance in this IpIo to send the packet. The dest address is configured
- // to be the unspecified address for the default IP instance.
- //
- IpSender = NULL;
- }
- } else {
- Sock = Tcb->Sk;
- TcpProto = (TCP_PROTO_DATA *)Sock->ProtoReserved;
- IpIo = TcpProto->TcpService->IpIo;
- IpSender = Tcb->IpInfo;
- if (Version == IP_VERSION_6) {
- //
- // It's IPv6 and this TCP segment belongs to a solid TCB, in such case
- // the destination address can't be overridden, so reset the Dest to NULL.
- //
- if (!Tcb->RemoteIpZero) {
- Dest = NULL;
- }
- }
- }
- ASSERT (Version == IpIo->IpVersion);
- if (Version == IP_VERSION_4) {
- Override.Ip4OverrideData.TypeOfService = 0;
- Override.Ip4OverrideData.TimeToLive = 255;
- Override.Ip4OverrideData.DoNotFragment = FALSE;
- Override.Ip4OverrideData.Protocol = EFI_IP_PROTO_TCP;
- ZeroMem (&Override.Ip4OverrideData.GatewayAddress, sizeof (EFI_IPv4_ADDRESS));
- CopyMem (&Override.Ip4OverrideData.SourceAddress, Src, sizeof (EFI_IPv4_ADDRESS));
- } else {
- Override.Ip6OverrideData.Protocol = EFI_IP_PROTO_TCP;
- Override.Ip6OverrideData.HopLimit = 255;
- Override.Ip6OverrideData.FlowLabel = 0;
- }
- Status = IpIoSend (IpIo, Nbuf, IpSender, NULL, NULL, Dest, &Override);
- if (EFI_ERROR (Status)) {
- DEBUG ((DEBUG_ERROR, "TcpSendIpPacket: return %r error\n", Status));
- return -1;
- }
- return 0;
- }
- /**
- Refresh the remote peer's Neighbor Cache State if already exists.
- @param[in] Tcb Pointer to the TCP_CB of this TCP instance.
- @param[in] Neighbor Source address of the TCP segment.
- @param[in] Timeout Time in 100-ns units that this entry will remain
- in the neighbor cache. A value of zero means that
- the entry is permanent. A value of non-zero means
- that the entry is dynamic and will be deleted
- after Timeout.
- @retval EFI_SUCCESS Successfully updated the neighbor relationship.
- @retval EFI_NOT_STARTED The IpIo is not configured.
- @retval EFI_INVALID_PARAMETER Any input parameter is invalid.
- @retval EFI_OUT_OF_RESOURCES Failed to allocate some resources.
- @retval EFI_NOT_FOUND This entry is not in the neighbor table.
- **/
- EFI_STATUS
- Tcp6RefreshNeighbor (
- IN TCP_CB *Tcb,
- IN EFI_IP_ADDRESS *Neighbor,
- IN UINT32 Timeout
- )
- {
- IP_IO *IpIo;
- SOCKET *Sock;
- TCP_PROTO_DATA *TcpProto;
- if (NULL == Tcb) {
- IpIo = NULL;
- IpIoFindSender (&IpIo, IP_VERSION_6, Neighbor);
- if (IpIo == NULL) {
- DEBUG ((DEBUG_WARN, "Tcp6AddNeighbor: No appropriate IpIo.\n"));
- return EFI_NOT_STARTED;
- }
- } else {
- Sock = Tcb->Sk;
- TcpProto = (TCP_PROTO_DATA *)Sock->ProtoReserved;
- IpIo = TcpProto->TcpService->IpIo;
- }
- return IpIoRefreshNeighbor (IpIo, Neighbor, Timeout);
- }
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