/** @file
Help functions to access UDP service, it is used by both the DHCP and MTFTP.
Copyright (c) 2005 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at<BR>
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.h>
#include <Protocol/Udp4.h>
#include <Protocol/Udp6.h>
#include <Library/UdpIoLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DpcLib.h>
/**
Free a UDP_TX_TOKEN. The TX event is closed.
@param[in] TxToken The UDP_TX_TOKEN to release.
**/
VOID
UdpIoFreeTxToken (
IN UDP_TX_TOKEN *TxToken
)
{
if (TxToken->UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
gBS->CloseEvent (TxToken->Token.Udp4.Event);
} else if (TxToken->UdpIo->UdpVersion == UDP_IO_UDP6_VERSION) {
gBS->CloseEvent (TxToken->Token.Udp6.Event);
} else {
ASSERT (FALSE);
}
FreePool (TxToken);
}
/**
Free a UDP_RX_TOKEN. The RX event is closed.
@param[in] RxToken The UDP_RX_TOKEN to release.
**/
VOID
UdpIoFreeRxToken (
IN UDP_RX_TOKEN *RxToken
)
{
if (RxToken->UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
gBS->CloseEvent (RxToken->Token.Udp4.Event);
} else if (RxToken->UdpIo->UdpVersion == UDP_IO_UDP6_VERSION) {
gBS->CloseEvent (RxToken->Token.Udp6.Event);
} else {
ASSERT (FALSE);
}
FreePool (RxToken);
}
/**
The callback function when the packet is sent by UDP.
It will remove the packet from the local list then call
the packet owner's callback function set by UdpIoSendDatagram.
@param[in] Context The UDP TX Token.
**/
VOID
EFIAPI
UdpIoOnDgramSentDpc (
IN VOID *Context
)
{
UDP_TX_TOKEN *TxToken;
TxToken = (UDP_TX_TOKEN *) Context;
ASSERT (TxToken->Signature == UDP_IO_TX_SIGNATURE);
ASSERT ((TxToken->UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) ||
(TxToken->UdpIo->UdpVersion == UDP_IO_UDP6_VERSION));
RemoveEntryList (&TxToken->Link);
if (TxToken->UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
TxToken->CallBack (TxToken->Packet, NULL, TxToken->Token.Udp4.Status, TxToken->Context);
} else {
TxToken->CallBack (TxToken->Packet, NULL, TxToken->Token.Udp6.Status, TxToken->Context);
}
UdpIoFreeTxToken (TxToken);
}
/**
Request UdpIoOnDgramSentDpc as a DPC at TPL_CALLBACK.
@param[in] Event The event signaled.
@param[in] Context The UDP TX Token.
**/
VOID
EFIAPI
UdpIoOnDgramSent (
IN EFI_EVENT Event,
IN VOID *Context
)
{
//
// Request UdpIoOnDgramSentDpc as a DPC at TPL_CALLBACK
//
QueueDpc (TPL_CALLBACK, UdpIoOnDgramSentDpc, Context);
}
/**
Recycle the received UDP data.
@param[in] Context The UDP_RX_TOKEN.
**/
VOID
EFIAPI
UdpIoRecycleDgram (
IN VOID *Context
)
{
UDP_RX_TOKEN *RxToken;
RxToken = (UDP_RX_TOKEN *) Context;
if (RxToken->UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
gBS->SignalEvent (RxToken->Token.Udp4.Packet.RxData->RecycleSignal);
} else if (RxToken->UdpIo->UdpVersion == UDP_IO_UDP6_VERSION) {
gBS->SignalEvent (RxToken->Token.Udp6.Packet.RxData->RecycleSignal);
} else {
ASSERT (FALSE);
}
UdpIoFreeRxToken (RxToken);
}
/**
The event handle for UDP receive request.
It will build a NET_BUF from the recieved UDP data, then deliver it
to the receiver.
@param[in] Context The UDP RX token.
**/
VOID
EFIAPI
UdpIoOnDgramRcvdDpc (
IN VOID *Context
)
{
EFI_STATUS Status;
VOID *Token;
VOID *RxData;
VOID *Session;
UDP_RX_TOKEN *RxToken;
UDP_END_POINT EndPoint;
NET_BUF *Netbuf;
RxToken = (UDP_RX_TOKEN *) Context;
ZeroMem (&EndPoint, sizeof(UDP_END_POINT));
ASSERT ((RxToken->Signature == UDP_IO_RX_SIGNATURE) &&
(RxToken == RxToken->UdpIo->RecvRequest));
ASSERT ((RxToken->UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) ||
(RxToken->UdpIo->UdpVersion == UDP_IO_UDP6_VERSION));
//
// Clear the receive request first in case that the caller
// wants to restart the receive in the callback.
//
RxToken->UdpIo->RecvRequest = NULL;
if (RxToken->UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
Token = &RxToken->Token.Udp4;
RxData = ((EFI_UDP4_COMPLETION_TOKEN *) Token)->Packet.RxData;
Status = ((EFI_UDP4_COMPLETION_TOKEN *) Token)->Status;
} else {
Token = &RxToken->Token.Udp6;
RxData = ((EFI_UDP6_COMPLETION_TOKEN *) Token)->Packet.RxData;
Status = ((EFI_UDP6_COMPLETION_TOKEN *) Token)->Status;
}
if (EFI_ERROR (Status) || RxData == NULL) {
if (Status != EFI_ABORTED) {
//
// Invoke the CallBack only if the reception is not actively aborted.
//
RxToken->CallBack (NULL, NULL, Status, RxToken->Context);
}
UdpIoFreeRxToken (RxToken);
return;
}
//
// Build a NET_BUF from the UDP receive data, then deliver it up.
//
if (RxToken->UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
Netbuf = NetbufFromExt (
(NET_FRAGMENT *)((EFI_UDP4_RECEIVE_DATA *) RxData)->FragmentTable,
((EFI_UDP4_RECEIVE_DATA *) RxData)->FragmentCount,
0,
(UINT32) RxToken->HeadLen,
UdpIoRecycleDgram,
RxToken
);
if (Netbuf == NULL) {
gBS->SignalEvent (((EFI_UDP4_RECEIVE_DATA *) RxData)->RecycleSignal);
RxToken->CallBack (NULL, NULL, EFI_OUT_OF_RESOURCES, RxToken->Context);
UdpIoFreeRxToken (RxToken);
return;
}
Session = &((EFI_UDP4_RECEIVE_DATA *) RxData)->UdpSession;
EndPoint.LocalPort = ((EFI_UDP4_SESSION_DATA *) Session)->DestinationPort;
EndPoint.RemotePort = ((EFI_UDP4_SESSION_DATA *) Session)->SourcePort;
CopyMem (
&EndPoint.LocalAddr,
&((EFI_UDP4_SESSION_DATA *) Session)->DestinationAddress,
sizeof (EFI_IPv4_ADDRESS)
);
CopyMem (
&EndPoint.RemoteAddr,
&((EFI_UDP4_SESSION_DATA *) Session)->SourceAddress,
sizeof (EFI_IPv4_ADDRESS)
);
EndPoint.LocalAddr.Addr[0] = NTOHL (EndPoint.LocalAddr.Addr[0]);
EndPoint.RemoteAddr.Addr[0] = NTOHL (EndPoint.RemoteAddr.Addr[0]);
} else {
Netbuf = NetbufFromExt (
(NET_FRAGMENT *)((EFI_UDP6_RECEIVE_DATA *) RxData)->FragmentTable,
((EFI_UDP6_RECEIVE_DATA *) RxData)->FragmentCount,
0,
(UINT32) RxToken->HeadLen,
UdpIoRecycleDgram,
RxToken
);
if (Netbuf == NULL) {
gBS->SignalEvent (((EFI_UDP6_RECEIVE_DATA *) RxData)->RecycleSignal);
RxToken->CallBack (NULL, NULL, EFI_OUT_OF_RESOURCES, RxToken->Context);
UdpIoFreeRxToken (RxToken);
return;
}
Session = &((EFI_UDP6_RECEIVE_DATA *) RxData)->UdpSession;
EndPoint.LocalPort = ((EFI_UDP6_SESSION_DATA *) Session)->DestinationPort;
EndPoint.RemotePort = ((EFI_UDP6_SESSION_DATA *) Session)->SourcePort;
CopyMem (
&EndPoint.LocalAddr,
&((EFI_UDP6_SESSION_DATA *) Session)->DestinationAddress,
sizeof (EFI_IPv6_ADDRESS)
);
CopyMem (
&EndPoint.RemoteAddr,
&((EFI_UDP6_SESSION_DATA *) Session)->SourceAddress,
sizeof (EFI_IPv6_ADDRESS)
);
Ip6Swap128 (&EndPoint.LocalAddr.v6);
Ip6Swap128 (&EndPoint.RemoteAddr.v6);
}
RxToken->CallBack (Netbuf, &EndPoint, EFI_SUCCESS, RxToken->Context);
}
/**
Request UdpIoOnDgramRcvdDpc() as a DPC at TPL_CALLBACK.
@param[in] Event The UDP receive request event.
@param[in] Context The UDP RX token.
**/
VOID
EFIAPI
UdpIoOnDgramRcvd (
IN EFI_EVENT Event,
IN VOID *Context
)
{
//
// Request UdpIoOnDgramRcvdDpc as a DPC at TPL_CALLBACK
//
QueueDpc (TPL_CALLBACK, UdpIoOnDgramRcvdDpc, Context);
}
/**
Create a UDP_RX_TOKEN to wrap the request.
@param[in] UdpIo The UdpIo to receive packets from.
@param[in] CallBack The function to call when receive finished.
@param[in] Context The opaque parameter to the CallBack.
@param[in] HeadLen The head length to reserver for the packet.
@return The Wrapped request or NULL if failed to allocate resources or some errors happened.
**/
UDP_RX_TOKEN *
UdpIoCreateRxToken (
IN UDP_IO *UdpIo,
IN UDP_IO_CALLBACK CallBack,
IN VOID *Context,
IN UINT32 HeadLen
)
{
UDP_RX_TOKEN *Token;
EFI_STATUS Status;
ASSERT ((UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) ||
(UdpIo->UdpVersion == UDP_IO_UDP6_VERSION));
Token = AllocatePool (sizeof (UDP_RX_TOKEN));
if (Token == NULL) {
return NULL;
}
Token->Signature = UDP_IO_RX_SIGNATURE;
Token->UdpIo = UdpIo;
Token->CallBack = CallBack;
Token->Context = Context;
Token->HeadLen = HeadLen;
if (UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
Token->Token.Udp4.Status = EFI_NOT_READY;
Token->Token.Udp4.Packet.RxData = NULL;
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
UdpIoOnDgramRcvd,
Token,
&Token->Token.Udp4.Event
);
} else {
Token->Token.Udp6.Status = EFI_NOT_READY;
Token->Token.Udp6.Packet.RxData = NULL;
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
UdpIoOnDgramRcvd,
Token,
&Token->Token.Udp6.Event
);
}
if (EFI_ERROR (Status)) {
FreePool (Token);
return NULL;
}
return Token;
}
/**
Wrap a transmit request into a new created UDP_TX_TOKEN.
@param[in] UdpIo The UdpIo to send packet to.
@param[in] Packet The user's packet.
@param[in] EndPoint The local and remote access point.
@param[in] Gateway The overrided next hop.
@param[in] CallBack The function to call when transmission completed.
@param[in] Context The opaque parameter to the call back.
@return The wrapped transmission request or NULL if failed to allocate resources
or for some errors.
**/
UDP_TX_TOKEN *
UdpIoCreateTxToken (
IN UDP_IO *UdpIo,
IN NET_BUF *Packet,
IN UDP_END_POINT *EndPoint OPTIONAL,
IN EFI_IP_ADDRESS *Gateway OPTIONAL,
IN UDP_IO_CALLBACK CallBack,
IN VOID *Context
)
{
UDP_TX_TOKEN *TxToken;
VOID *Token;
VOID *Data;
EFI_STATUS Status;
UINT32 Count;
UINTN Size;
IP4_ADDR Ip;
ASSERT (Packet != NULL);
ASSERT ((UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) ||
(UdpIo->UdpVersion == UDP_IO_UDP6_VERSION));
if (UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
Size = sizeof (UDP_TX_TOKEN) + sizeof (EFI_UDP4_FRAGMENT_DATA) * (Packet->BlockOpNum - 1);
} else {
Size = sizeof (UDP_TX_TOKEN) + sizeof (EFI_UDP6_FRAGMENT_DATA) * (Packet->BlockOpNum - 1);
}
TxToken = AllocatePool (Size);
if (TxToken == NULL) {
return NULL;
}
TxToken->Signature = UDP_IO_TX_SIGNATURE;
InitializeListHead (&TxToken->Link);
TxToken->UdpIo = UdpIo;
TxToken->CallBack = CallBack;
TxToken->Packet = Packet;
TxToken->Context = Context;
Token = &(TxToken->Token);
Count = Packet->BlockOpNum;
if (UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
((EFI_UDP4_COMPLETION_TOKEN *) Token)->Status = EFI_NOT_READY;
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
UdpIoOnDgramSent,
TxToken,
&((EFI_UDP4_COMPLETION_TOKEN *) Token)->Event
);
if (EFI_ERROR (Status)) {
FreePool (TxToken);
return NULL;
}
Data = &(TxToken->Data.Udp4);
((EFI_UDP4_COMPLETION_TOKEN *) Token)->Packet.TxData = Data;
((EFI_UDP4_TRANSMIT_DATA *) Data)->UdpSessionData = NULL;
((EFI_UDP4_TRANSMIT_DATA *) Data)->GatewayAddress = NULL;
((EFI_UDP4_TRANSMIT_DATA *) Data)->DataLength = Packet->TotalSize;
NetbufBuildExt (
Packet,
(NET_FRAGMENT *)((EFI_UDP4_TRANSMIT_DATA *) Data)->FragmentTable,
&Count
);
((EFI_UDP4_TRANSMIT_DATA *) Data)->FragmentCount = Count;
if (EndPoint != NULL) {
Ip = HTONL (EndPoint->LocalAddr.Addr[0]);
CopyMem (
&TxToken->Session.Udp4.SourceAddress,
&Ip,
sizeof (EFI_IPv4_ADDRESS)
);
Ip = HTONL (EndPoint->RemoteAddr.Addr[0]);
CopyMem (
&TxToken->Session.Udp4.DestinationAddress,
&Ip,
sizeof (EFI_IPv4_ADDRESS)
);
TxToken->Session.Udp4.SourcePort = EndPoint->LocalPort;
TxToken->Session.Udp4.DestinationPort = EndPoint->RemotePort;
((EFI_UDP4_TRANSMIT_DATA *) Data)->UdpSessionData = &(TxToken->Session.Udp4);
}
if (Gateway != NULL && (Gateway->Addr[0] != 0)) {
Ip = HTONL (Gateway->Addr[0]);
CopyMem (&TxToken->Gateway, &Ip, sizeof (EFI_IPv4_ADDRESS));
((EFI_UDP4_TRANSMIT_DATA *) Data)->GatewayAddress = &TxToken->Gateway;
}
} else {
((EFI_UDP6_COMPLETION_TOKEN *) Token)->Status = EFI_NOT_READY;
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
UdpIoOnDgramSent,
TxToken,
&((EFI_UDP6_COMPLETION_TOKEN *) Token)->Event
);
if (EFI_ERROR (Status)) {
FreePool (TxToken);
return NULL;
}
Data = &(TxToken->Data.Udp6);
((EFI_UDP6_COMPLETION_TOKEN *) Token)->Packet.TxData = Data;
((EFI_UDP6_TRANSMIT_DATA *) Data)->UdpSessionData = NULL;
((EFI_UDP6_TRANSMIT_DATA *) Data)->DataLength = Packet->TotalSize;
NetbufBuildExt (
Packet,
(NET_FRAGMENT *)((EFI_UDP6_TRANSMIT_DATA *) Data)->FragmentTable,
&Count
);
((EFI_UDP6_TRANSMIT_DATA *) Data)->FragmentCount = Count;
if (EndPoint != NULL) {
CopyMem (
&TxToken->Session.Udp6.SourceAddress,
&EndPoint->LocalAddr.v6,
sizeof(EFI_IPv6_ADDRESS)
);
CopyMem (
&TxToken->Session.Udp6.DestinationAddress,
&EndPoint->RemoteAddr.v6,
sizeof(EFI_IPv6_ADDRESS)
);
TxToken->Session.Udp6.SourcePort = EndPoint->LocalPort;
TxToken->Session.Udp6.DestinationPort = EndPoint->RemotePort;
((EFI_UDP6_TRANSMIT_DATA *) Data)->UdpSessionData = &(TxToken->Session.Udp6);
}
}
return TxToken;
}
/**
Creates a UDP_IO to access the UDP service. It creates and configures
a UDP child.
It locates the UDP service binding prototype on the Controller parameter
uses the UDP service binding prototype to create a UDP child (also known as
a UDP instance) configures the UDP child by calling Configure function prototype.
Any failures in creating or configuring the UDP child return NULL for failure.
@param[in] Controller The controller that has the UDP service binding.
protocol installed.
@param[in] ImageHandle The image handle for the driver.
@param[in] Configure The function to configure the created UDP child.
@param[in] UdpVersion The UDP protocol version, UDP4 or UDP6.
@param[in] Context The opaque parameter for the Configure funtion.
@return Newly-created UDP_IO or NULL if failed.
**/
UDP_IO *
EFIAPI
UdpIoCreateIo (
IN EFI_HANDLE Controller,
IN EFI_HANDLE ImageHandle,
IN UDP_IO_CONFIG Configure,
IN UINT8 UdpVersion,
IN VOID *Context
)
{
UDP_IO *UdpIo;
EFI_STATUS Status;
ASSERT (Configure != NULL);
ASSERT ((UdpVersion == UDP_IO_UDP4_VERSION) || (UdpVersion == UDP_IO_UDP6_VERSION));
UdpIo = AllocatePool (sizeof (UDP_IO));
if (UdpIo == NULL) {
return NULL;
}
UdpIo->UdpVersion = UdpVersion;
UdpIo->Signature = UDP_IO_SIGNATURE;
InitializeListHead (&UdpIo->Link);
UdpIo->RefCnt = 1;
UdpIo->Controller = Controller;
UdpIo->Image = ImageHandle;
InitializeListHead (&UdpIo->SentDatagram);
UdpIo->RecvRequest = NULL;
UdpIo->UdpHandle = NULL;
if (UdpVersion == UDP_IO_UDP4_VERSION) {
//
// Create a UDP child then open and configure it
//
Status = NetLibCreateServiceChild (
Controller,
ImageHandle,
&gEfiUdp4ServiceBindingProtocolGuid,
&UdpIo->UdpHandle
);
if (EFI_ERROR (Status)) {
goto FREE_MEM;
}
Status = gBS->OpenProtocol (
UdpIo->UdpHandle,
&gEfiUdp4ProtocolGuid,
(VOID **) &UdpIo->Protocol.Udp4,
ImageHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
goto FREE_CHILD;
}
if (EFI_ERROR (Configure (UdpIo, Context))) {
goto CLOSE_PROTOCOL;
}
Status = UdpIo->Protocol.Udp4->GetModeData (
UdpIo->Protocol.Udp4,
NULL,
NULL,
NULL,
&UdpIo->SnpMode
);
if (EFI_ERROR (Status)) {
goto CLOSE_PROTOCOL;
}
} else {
Status = NetLibCreateServiceChild (
Controller,
ImageHandle,
&gEfiUdp6ServiceBindingProtocolGuid,
&UdpIo->UdpHandle
);
if (EFI_ERROR (Status)) {
goto FREE_MEM;
}
Status = gBS->OpenProtocol (
UdpIo->UdpHandle,
&gEfiUdp6ProtocolGuid,
(VOID **) &UdpIo->Protocol.Udp6,
ImageHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
goto FREE_CHILD;
}
if (EFI_ERROR (Configure (UdpIo, Context))) {
goto CLOSE_PROTOCOL;
}
Status = UdpIo->Protocol.Udp6->GetModeData (
UdpIo->Protocol.Udp6,
NULL,
NULL,
NULL,
&UdpIo->SnpMode
);
if (EFI_ERROR (Status)) {
goto CLOSE_PROTOCOL;
}
}
return UdpIo;
CLOSE_PROTOCOL:
if (UdpVersion == UDP_IO_UDP4_VERSION) {
gBS->CloseProtocol (UdpIo->UdpHandle, &gEfiUdp4ProtocolGuid, ImageHandle, Controller);
} else {
gBS->CloseProtocol (UdpIo->UdpHandle, &gEfiUdp6ProtocolGuid, ImageHandle, Controller);
}
FREE_CHILD:
if (UdpVersion == UDP_IO_UDP4_VERSION) {
NetLibDestroyServiceChild (
Controller,
ImageHandle,
&gEfiUdp4ServiceBindingProtocolGuid,
UdpIo->UdpHandle
);
} else {
NetLibDestroyServiceChild (
Controller,
ImageHandle,
&gEfiUdp6ServiceBindingProtocolGuid,
UdpIo->UdpHandle
);
}
FREE_MEM:
FreePool (UdpIo);
return NULL;
}
/**
Cancel all the sent datagram that pass the selection criteria of ToCancel.
If ToCancel is NULL, all the datagrams are cancelled.
@param[in] UdpIo The UDP_IO to cancel packet.
@param[in] IoStatus The IoStatus to return to the packet owners.
@param[in] ToCancel The select funtion to test whether to cancel this
packet or not.
@param[in] Context The opaque parameter to the ToCancel.
**/
VOID
EFIAPI
UdpIoCancelDgrams (
IN UDP_IO *UdpIo,
IN EFI_STATUS IoStatus,
IN UDP_IO_TO_CANCEL ToCancel, OPTIONAL
IN VOID *Context
)
{
LIST_ENTRY *Entry;
LIST_ENTRY *Next;
UDP_TX_TOKEN *TxToken;
ASSERT ((UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) ||
(UdpIo->UdpVersion == UDP_IO_UDP6_VERSION));
NET_LIST_FOR_EACH_SAFE (Entry, Next, &UdpIo->SentDatagram) {
TxToken = NET_LIST_USER_STRUCT (Entry, UDP_TX_TOKEN, Link);
if ((ToCancel == NULL) || (ToCancel (TxToken, Context))) {
if (UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
UdpIo->Protocol.Udp4->Cancel (UdpIo->Protocol.Udp4, &TxToken->Token.Udp4);
} else {
UdpIo->Protocol.Udp6->Cancel (UdpIo->Protocol.Udp6, &TxToken->Token.Udp6);
}
}
}
}
/**
Free the UDP_IO and all its related resources.
The function will cancel all sent datagram and receive request.
@param[in] UdpIo The UDP_IO to free.
@retval EFI_SUCCESS The UDP_IO is freed.
**/
EFI_STATUS
EFIAPI
UdpIoFreeIo (
IN UDP_IO *UdpIo
)
{
UDP_RX_TOKEN *RxToken;
ASSERT ((UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) ||
(UdpIo->UdpVersion == UDP_IO_UDP6_VERSION));
//
// Cancel all the sent datagram and receive requests. The
// callbacks of transmit requests are executed to allow the
// caller to release the resource. The callback of receive
// request are NOT executed. This is because it is most
// likely that the current user of the UDP IO port is closing
// itself.
//
UdpIoCancelDgrams (UdpIo, EFI_ABORTED, NULL, NULL);
if (UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
if ((RxToken = UdpIo->RecvRequest) != NULL) {
UdpIo->Protocol.Udp4->Cancel (UdpIo->Protocol.Udp4, &RxToken->Token.Udp4);
}
//
// Close then destroy the Udp4 child
//
gBS->CloseProtocol (
UdpIo->UdpHandle,
&gEfiUdp4ProtocolGuid,
UdpIo->Image,
UdpIo->Controller
);
NetLibDestroyServiceChild (
UdpIo->Controller,
UdpIo->Image,
&gEfiUdp4ServiceBindingProtocolGuid,
UdpIo->UdpHandle
);
} else {
if ((RxToken = UdpIo->RecvRequest) != NULL) {
UdpIo->Protocol.Udp6->Cancel (UdpIo->Protocol.Udp6, &RxToken->Token.Udp6);
}
//
// Close then destroy the Udp6 child
//
gBS->CloseProtocol (
UdpIo->UdpHandle,
&gEfiUdp6ProtocolGuid,
UdpIo->Image,
UdpIo->Controller
);
NetLibDestroyServiceChild (
UdpIo->Controller,
UdpIo->Image,
&gEfiUdp6ServiceBindingProtocolGuid,
UdpIo->UdpHandle
);
}
if (!IsListEmpty(&UdpIo->Link)) {
RemoveEntryList (&UdpIo->Link);
}
FreePool (UdpIo);
return EFI_SUCCESS;
}
/**
Clean up the UDP_IO without freeing it. The function is called when
user wants to re-use the UDP_IO later.
It will release all the transmitted datagrams and receive request. It will
also configure NULL for the UDP instance.
@param[in] UdpIo The UDP_IO to clean up.
**/
VOID
EFIAPI
UdpIoCleanIo (
IN UDP_IO *UdpIo
)
{
UDP_RX_TOKEN *RxToken;
ASSERT ((UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) ||
(UdpIo->UdpVersion == UDP_IO_UDP6_VERSION));
//
// Cancel all the sent datagram and receive requests.
//
UdpIoCancelDgrams (UdpIo, EFI_ABORTED, NULL, NULL);
if (UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
if ((RxToken = UdpIo->RecvRequest) != NULL) {
UdpIo->Protocol.Udp4->Cancel (UdpIo->Protocol.Udp4, &RxToken->Token.Udp4);
}
UdpIo->Protocol.Udp4->Configure (UdpIo->Protocol.Udp4, NULL);
} else {
if ((RxToken = UdpIo->RecvRequest) != NULL) {
UdpIo->Protocol.Udp6->Cancel (UdpIo->Protocol.Udp6, &RxToken->Token.Udp6);
}
UdpIo->Protocol.Udp6->Configure (UdpIo->Protocol.Udp6, NULL);
}
}
/**
Send a packet through the UDP_IO.
The packet will be wrapped in UDP_TX_TOKEN. Function Callback will be called
when the packet is sent. The optional parameter EndPoint overrides the default
address pair if specified.
@param[in] UdpIo The UDP_IO to send the packet through.
@param[in] Packet The packet to send.
@param[in] EndPoint The local and remote access point. Override the
default address pair set during configuration.
@param[in] Gateway The gateway to use.
@param[in] CallBack The function being called when packet is
transmitted or failed.
@param[in] Context The opaque parameter passed to CallBack.
@retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the packet.
@retval EFI_SUCCESS The packet is successfully delivered to UDP for
transmission.
**/
EFI_STATUS
EFIAPI
UdpIoSendDatagram (
IN UDP_IO *UdpIo,
IN NET_BUF *Packet,
IN UDP_END_POINT *EndPoint OPTIONAL,
IN EFI_IP_ADDRESS *Gateway OPTIONAL,
IN UDP_IO_CALLBACK CallBack,
IN VOID *Context
)
{
UDP_TX_TOKEN *TxToken;
EFI_STATUS Status;
ASSERT ((UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) ||
(UdpIo->UdpVersion == UDP_IO_UDP6_VERSION));
TxToken = UdpIoCreateTxToken (UdpIo, Packet, EndPoint, Gateway, CallBack, Context);
if (TxToken == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Insert the tx token into SendDatagram list before transmitting it. Remove
// it from the list if the returned status is not EFI_SUCCESS.
//
InsertHeadList (&UdpIo->SentDatagram, &TxToken->Link);
if (UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
Status = UdpIo->Protocol.Udp4->Transmit (UdpIo->Protocol.Udp4, &TxToken->Token.Udp4);
} else {
Status = UdpIo->Protocol.Udp6->Transmit (UdpIo->Protocol.Udp6, &TxToken->Token.Udp6);
}
if (EFI_ERROR (Status)) {
RemoveEntryList (&TxToken->Link);
UdpIoFreeTxToken (TxToken);
return Status;
}
return EFI_SUCCESS;
}
/**
The select function to cancel a single sent datagram.
@param[in] Token The UDP_TX_TOKEN to test against
@param[in] Context The NET_BUF of the sent datagram
@retval TRUE The packet is to be cancelled.
@retval FALSE The packet is not to be cancelled.
**/
BOOLEAN
EFIAPI
UdpIoCancelSingleDgram (
IN UDP_TX_TOKEN *Token,
IN VOID *Context
)
{
NET_BUF *Packet;
Packet = (NET_BUF *) Context;
if (Token->Packet == Packet) {
return TRUE;
}
return FALSE;
}
/**
Cancel a single sent datagram.
@param[in] UdpIo The UDP_IO to cancel the packet from
@param[in] Packet The packet to cancel
**/
VOID
EFIAPI
UdpIoCancelSentDatagram (
IN UDP_IO *UdpIo,
IN NET_BUF *Packet
)
{
UdpIoCancelDgrams (UdpIo, EFI_ABORTED, UdpIoCancelSingleDgram, Packet);
}
/**
Issue a receive request to the UDP_IO.
This function is called when upper-layer needs packet from UDP for processing.
Only one receive request is acceptable at a time so a common usage model is
to invoke this function inside its Callback function when the former packet
is processed.
@param[in] UdpIo The UDP_IO to receive the packet from.
@param[in] CallBack The call back function to execute when the packet
is received.
@param[in] Context The opaque context passed to Callback.
@param[in] HeadLen The length of the upper-layer's protocol header.
@retval EFI_ALREADY_STARTED There is already a pending receive request. Only
one receive request is supported at a time.
@retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources.
@retval EFI_SUCCESS The receive request is issued successfully.
@retval EFI_UNSUPPORTED The UDP version in UDP_IO is not supported.
**/
EFI_STATUS
EFIAPI
UdpIoRecvDatagram (
IN UDP_IO *UdpIo,
IN UDP_IO_CALLBACK CallBack,
IN VOID *Context,
IN UINT32 HeadLen
)
{
UDP_RX_TOKEN *RxToken;
EFI_STATUS Status;
ASSERT ((UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) ||
(UdpIo->UdpVersion == UDP_IO_UDP6_VERSION));
if (UdpIo->RecvRequest != NULL) {
return EFI_ALREADY_STARTED;
}
RxToken = UdpIoCreateRxToken (UdpIo, CallBack, Context, HeadLen);
if (RxToken == NULL) {
return EFI_OUT_OF_RESOURCES;
}
UdpIo->RecvRequest = RxToken;
if (UdpIo->UdpVersion == UDP_IO_UDP4_VERSION) {
Status = UdpIo->Protocol.Udp4->Receive (UdpIo->Protocol.Udp4, &RxToken->Token.Udp4);
} else {
Status = UdpIo->Protocol.Udp6->Receive (UdpIo->Protocol.Udp6, &RxToken->Token.Udp6);
}
if (EFI_ERROR (Status)) {
UdpIo->RecvRequest = NULL;
UdpIoFreeRxToken (RxToken);
}
return Status;
}