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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8358 6f19259b-4bc3-4df7-8a09-765794883524
326 lines
11 KiB
C
326 lines
11 KiB
C
/** @file
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Ihis library is only intended to be used by UEFI network stack modules.
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It provides the helper routines to access UDP service. It is used by both DHCP and MTFTP.
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Copyright (c) 2006 - 2008, Intel Corporation.<BR>
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All rights reserved. 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<BR>
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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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#ifndef _UDP4IO_H_
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#define _UDP4IO_H_
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#include <Protocol/Udp4.h>
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#include <Library/NetLib.h>
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typedef struct _UDP_IO_PORT UDP_IO_PORT;
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///
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/// Signatures used by UdpIo Library.
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///
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typedef enum {
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UDP_IO_RX_SIGNATURE = SIGNATURE_32 ('U', 'D', 'P', 'R'),
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UDP_IO_TX_SIGNATURE = SIGNATURE_32 ('U', 'D', 'P', 'T'),
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UDP_IO_SIGNATURE = SIGNATURE_32 ('U', 'D', 'P', 'I')
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} UDP_IO_SIGNATURE_TYPE;
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///
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/// The Udp4 address pair.
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///
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typedef struct {
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IP4_ADDR LocalAddr;
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UINT16 LocalPort;
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IP4_ADDR RemoteAddr;
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UINT16 RemotePort;
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} UDP_POINTS;
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/**
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Prototype called when receiving or sending packets from/to a UDP point.
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This prototype is used by both receive and sending when calling
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UdpIoRecvDatagram() or UdpIoSendDatagram(). When receiving, Netbuf is allocated by
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UDP access point, and released by user. When sending, the NetBuf is from user,
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and provided to the callback as a reference.
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@param[in] Packet Packet received or sent
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@param[in] Points The Udp4 address pair corresponds to the Udp4 IO
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@param[in] IoStatus Packet receiving or sending status
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@param[in] Context User-defined data when calling UdpIoRecvDatagram() or
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UdpIoSendDatagram()
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**/
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typedef
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VOID
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(*UDP_IO_CALLBACK) (
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IN NET_BUF *Packet,
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IN UDP_POINTS *Points,
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IN EFI_STATUS IoStatus,
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IN VOID *Context
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);
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///
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/// This structure is used internally by UdpIo Library.
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///
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/// Each receive request is wrapped in an UDP_RX_TOKEN. Upon completion,
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/// the CallBack will be called. Only one receive request is sent to UDP at a
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/// time. HeadLen gives the length of the application's header. UDP_IO will
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/// make the application's header continuous before delivering up.
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///
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typedef struct {
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UINT32 Signature;
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UDP_IO_PORT *UdpIo;
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UDP_IO_CALLBACK CallBack;
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VOID *Context;
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UINT32 HeadLen;
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EFI_UDP4_COMPLETION_TOKEN UdpToken;
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} UDP_RX_TOKEN;
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///
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/// This structure is used internally by UdpIo Library.
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///
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/// Each transmit request is wrapped in an UDP_TX_TOKEN. Upon completion,
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/// the CallBack will be called. There can be several transmit requests and they
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/// are linked in a list.
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///
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typedef struct {
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UINT32 Signature;
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LIST_ENTRY Link;
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UDP_IO_PORT *UdpIo;
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UDP_IO_CALLBACK CallBack;
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NET_BUF *Packet;
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VOID *Context;
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EFI_UDP4_SESSION_DATA UdpSession;
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EFI_IPv4_ADDRESS Gateway;
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EFI_UDP4_COMPLETION_TOKEN UdpToken;
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EFI_UDP4_TRANSMIT_DATA UdpTxData;
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} UDP_TX_TOKEN;
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///
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/// Type defined as UDP_IO_PORT.
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///
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/// The data structure wraps Udp4 instance and its configuration. It is used by
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/// UdpIo Library to do all Udp4 operations.
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///
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struct _UDP_IO_PORT {
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UINT32 Signature;
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LIST_ENTRY Link;
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INTN RefCnt;
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//
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// Handle used to create/destory UDP child
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//
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EFI_HANDLE Controller;
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EFI_HANDLE Image;
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EFI_HANDLE UdpHandle;
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EFI_UDP4_PROTOCOL *Udp; ///< The wrapped Udp4 instance.
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EFI_UDP4_CONFIG_DATA UdpConfig;
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EFI_SIMPLE_NETWORK_MODE SnpMode;
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LIST_ENTRY SentDatagram; ///< A list of UDP_TX_TOKEN.
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UDP_RX_TOKEN *RecvRequest;
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};
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/**
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Prototype called when UdpIo Library configures a Udp4 instance.
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The prototype is set and called when creating a UDP_IO_PORT in UdpIoCreatePort().
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@param[in] UdpIo The UDP_IO_PORT to configure
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@param[in] Context User-defined data when calling UdpIoCreatePort()
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@retval EFI_SUCCESS The configure process succeeds
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@retval Others The UDP_IO_PORT fails to configure indicating
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UdpIoCreatePort() should fail
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**/
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typedef
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EFI_STATUS
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(*UDP_IO_CONFIG) (
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IN UDP_IO_PORT *UdpIo,
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IN VOID *Context
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);
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/**
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The select function to decide whether to cancel the UDP_TX_TOKEN.
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@param[in] Token The UDP_TX_TOKEN to decide whether to cancel
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@param[in] Context User-defined data in UdpIoCancelDgrams()
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@retval TRUE To cancel the UDP_TX_TOKEN
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@retval FALSE Do not cancel this UDP_TX_TOKEN
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**/
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typedef
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BOOLEAN
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(*UDP_IO_TO_CANCEL) (
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IN UDP_TX_TOKEN *Token,
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IN VOID *Context
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);
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/**
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Cancel all the sent datagram that pass the selection criteria of ToCancel.
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If ToCancel is NULL, all the datagrams are cancelled.
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@param[in] UdpIo The UDP_IO_PORT to cancel packet.
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@param[in] IoStatus The IoStatus to return to the packet owners.
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@param[in] ToCancel The select funtion to test whether to cancel this
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packet or not.
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@param[in] Context The opaque parameter to the ToCancel.
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**/
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VOID
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EFIAPI
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UdpIoCancelDgrams (
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IN UDP_IO_PORT *UdpIo,
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IN EFI_STATUS IoStatus,
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IN UDP_IO_TO_CANCEL ToCancel, OPTIONAL
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IN VOID *Context
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);
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/**
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Create a UDP_IO_PORT to access the UDP service. It will create and configure
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a UDP child.
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The function will locate the UDP service binding prototype on the Controller
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parameter and use it to create a UDP child (aka Udp instance). Then the UDP
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child will be configured by calling Configure function prototype. Any failures
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in creating or configure the UDP child will lead to the failure of UDP_IO_PORT
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creation.
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@param[in] Controller The controller that has the UDP service binding.
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protocol installed.
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@param[in] Image The image handle for the driver.
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@param[in] Configure The function to configure the created UDP child.
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@param[in] Context The opaque parameter for the Configure funtion.
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@return Newly-created UDP_IO_PORT or NULL if failed.
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**/
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UDP_IO_PORT *
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EFIAPI
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UdpIoCreatePort (
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IN EFI_HANDLE Controller,
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IN EFI_HANDLE Image,
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IN UDP_IO_CONFIG Configure,
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IN VOID *Context
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);
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/**
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Free the UDP_IO_PORT and all its related resources.
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The function will cancel all sent datagram and receive request.
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@param[in] UdpIo The UDP_IO_PORT to free.
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@retval EFI_SUCCESS The UDP_IO_PORT is freed.
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**/
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EFI_STATUS
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EFIAPI
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UdpIoFreePort (
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IN UDP_IO_PORT *UdpIo
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);
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/**
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Clean up the UDP_IO_PORT without freeing it. The function is called when
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user wants to re-use the UDP_IO_PORT later.
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It will release all the transmitted datagrams and receive request. It will
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also configure NULL for the UDP instance.
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@param[in] UdpIo The UDP_IO_PORT to clean up.
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**/
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VOID
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EFIAPI
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UdpIoCleanPort (
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IN UDP_IO_PORT *UdpIo
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);
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/**
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Send a packet through the UDP_IO_PORT.
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The packet will be wrapped in UDP_TX_TOKEN. Function Callback will be called
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when the packet is sent. The optional parameter EndPoint overrides the default
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address pair if specified.
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@param[in] UdpIo The UDP_IO_PORT to send the packet through.
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@param[in] Packet The packet to send.
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@param[in] EndPoint The local and remote access point. Override the
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default address pair set during configuration.
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@param[in] Gateway The gateway to use.
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@param[in] CallBack The function being called when packet is
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transmitted or failed.
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@param[in] Context The opaque parameter passed to CallBack.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the packet.
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@retval EFI_SUCCESS The packet is successfully delivered to UDP for
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transmission.
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**/
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EFI_STATUS
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EFIAPI
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UdpIoSendDatagram (
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IN UDP_IO_PORT *UdpIo,
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IN NET_BUF *Packet,
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IN UDP_POINTS *EndPoint, OPTIONAL
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IN IP4_ADDR Gateway,
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IN UDP_IO_CALLBACK CallBack,
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IN VOID *Context
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);
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/**
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Cancel a single sent datagram.
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@param[in] UdpIo The UDP_IO_PORT to cancel the packet from
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@param[in] Packet The packet to cancel
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**/
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VOID
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EFIAPI
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UdpIoCancelSentDatagram (
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IN UDP_IO_PORT *UdpIo,
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IN NET_BUF *Packet
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);
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/**
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Issue a receive request to the UDP_IO_PORT.
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This function is called when upper-layer needs packet from UDP for processing.
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Only one receive request is acceptable at a time so a common usage model is
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to invoke this function inside its Callback function when the former packet
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is processed.
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@param[in] UdpIo The UDP_IO_PORT to receive the packet from.
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@param[in] CallBack The call back function to execute when the packet
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is received.
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@param[in] Context The opaque context passed to Callback.
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@param[in] HeadLen The length of the upper-layer's protocol header.
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@retval EFI_ALREADY_STARTED There is already a pending receive request. Only
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one receive request is supported at a time.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources.
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@retval EFI_SUCCESS The receive request is issued successfully.
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**/
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EFI_STATUS
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EFIAPI
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UdpIoRecvDatagram (
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IN UDP_IO_PORT *UdpIo,
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IN UDP_IO_CALLBACK CallBack,
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IN VOID *Context,
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IN UINT32 HeadLen
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);
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#endif
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