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/** @file
The helper routines to access UDP service. It is used by both
DHCP and MTFTP.
Copyright (c) 2006 - 2008, Intel Corporation
All rights reserved. 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
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.
**/
#ifndef _UDP4IO_H_
#define _UDP4IO_H_
#include <Protocol/Udp4.h>
#include <Library/UdpIoLib.h>
#include <Library/NetLib.h>
typedef struct _UDP_IO_PORT UDP_IO_PORT;
typedef enum {
UDP_IO_RX_SIGNATURE = SIGNATURE_32 ('U', 'D', 'P', 'R'),
UDP_IO_TX_SIGNATURE = SIGNATURE_32 ('U', 'D', 'P', 'T'),
UDP_IO_SIGNATURE = SIGNATURE_32 ('U', 'D', 'P', 'I')
} UDP_IO_SIGNATURE_TYPE;
typedef struct {
IP4_ADDR LocalAddr;
UINT16 LocalPort;
IP4_ADDR RemoteAddr;
UINT16 RemotePort;
} UDP_POINTS;
//
// This prototype is used by both receive and transmission.
// When receiving Netbuf is allocated by UDP access point, and
// released by user. When transmitting, the NetBuf is from user,
// and provided to the callback as a reference.
//
typedef
VOID
(*UDP_IO_CALLBACK) (
IN NET_BUF *Packet,
IN UDP_POINTS *Points,
IN EFI_STATUS IoStatus,
IN VOID *Context
);
//
// Each receive request is wrapped in an UDP_RX_TOKEN. Upon completion,
// the CallBack will be called. Only one receive request is send to UDP.
// HeadLen gives the length of the application's header. UDP_IO will
// make the application's header continous before delivery up.
//
typedef struct {
UINT32 Signature;
UDP_IO_PORT *UdpIo;
UDP_IO_CALLBACK CallBack;
VOID *Context;
UINT32 HeadLen;
EFI_UDP4_COMPLETION_TOKEN UdpToken;
} UDP_RX_TOKEN;
//
// Each transmit request is wrapped in an UDP_TX_TOKEN. Upon completion,
// the CallBack will be called. There can be several transmit requests.
//
typedef struct {
UINT32 Signature;
LIST_ENTRY Link;
UDP_IO_PORT *UdpIo;
UDP_IO_CALLBACK CallBack;
NET_BUF *Packet;
VOID *Context;
EFI_UDP4_SESSION_DATA UdpSession;
EFI_IPv4_ADDRESS Gateway;
EFI_UDP4_COMPLETION_TOKEN UdpToken;
EFI_UDP4_TRANSMIT_DATA UdpTxData;
} UDP_TX_TOKEN;
struct _UDP_IO_PORT {
UINT32 Signature;
LIST_ENTRY Link;
INTN RefCnt;
//
// Handle used to create/destory UDP child
//
EFI_HANDLE Controller;
EFI_HANDLE Image;
EFI_HANDLE UdpHandle;
EFI_UDP4_PROTOCOL *Udp;
EFI_UDP4_CONFIG_DATA UdpConfig;
EFI_SIMPLE_NETWORK_MODE SnpMode;
LIST_ENTRY SentDatagram;
UDP_RX_TOKEN *RecvRequest;
};
typedef
EFI_STATUS
(*UDP_IO_CONFIG) (
IN UDP_IO_PORT *UdpIo,
IN VOID *Context
);
typedef
BOOLEAN
(*UDP_IO_TO_CANCEL) (
IN UDP_TX_TOKEN *Token,
IN VOID *Context
);
/**
Create a UDP IO port to access the UDP service. It will
create and configure a UDP child.
@param Controller The controller that has the UDP service binding
protocol installed.
@param Image The image handle for the driver.
@param Configure The function to configure the created UDP child
@param Context The opaque parameter for the Configure funtion.
@return A point to just created UDP IO port or NULL if some error happened.
**/
UDP_IO_PORT *
EFIAPI
UdpIoCreatePort (
IN EFI_HANDLE Controller,
IN EFI_HANDLE Image,
IN UDP_IO_CONFIG Configure,
IN VOID *Context
);
/**
Free the UDP IO port and all its related resources including
all the transmitted packet.
@param UdpIo The UDP IO port to free.
@retval EFI_SUCCESS The UDP IO port is freed.
**/
EFI_STATUS
EFIAPI
UdpIoFreePort (
IN UDP_IO_PORT *UdpIo
);
/**
Clean up the UDP IO port. It will release all the transmitted
datagrams and receive request. It will also configure NULL the
UDP child.
@param UdpIo UDP IO port to clean up.
**/
VOID
EFIAPI
UdpIoCleanPort (
IN UDP_IO_PORT *UdpIo
);
/**
Send a packet through the UDP IO port.
@param UdpIo The UDP IO Port to send the packet through
@param Packet The packet to send
@param EndPoint The local and remote access point
@param Gateway The gateway to use
@param CallBack The call back function to call when packet is
transmitted or failed.
@param Context The opque parameter to the 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_PORT *UdpIo,
IN NET_BUF *Packet,
IN UDP_POINTS *EndPoint, OPTIONAL
IN IP4_ADDR Gateway,
IN UDP_IO_CALLBACK CallBack,
IN VOID *Context
);
/**
Cancel a single sent datagram.
@param UdpIo The UDP IO port to cancel the packet from
@param Packet The packet to cancel
**/
VOID
EFIAPI
UdpIoCancelSentDatagram (
IN UDP_IO_PORT *UdpIo,
IN NET_BUF *Packet
);
/**
Issue a receive request to the UDP IO port.
@param UdpIo The UDP IO port to recieve the packet from.
@param CallBack The call back function to execute when receive
finished.
@param Context The opque context to the call back
@param HeadLen The lenght of the application's header
@retval EFI_ALREADY_STARTED There is already a pending receive request. Only
one receive request is supported.
@retval EFI_OUT_OF_RESOURCES Failed to allocate some resource.
@retval EFI_SUCCESS The receive request is issued successfully.
**/
EFI_STATUS
EFIAPI
UdpIoRecvDatagram (
IN UDP_IO_PORT *UdpIo,
IN UDP_IO_CALLBACK CallBack,
IN VOID *Context,
IN UINT32 HeadLen
);
#endif
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