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1. Update the UdpIo to a combined UdpIo to support both v4 and v6 stack.

Browse Source 
2. Update Dhcp4 and Mtftp4 driver to adopt the combined UdpIo.
3. Clean up coding style problems in combined IpIoLib/NetLib. Update Tcp4 and Udp4 to adopt the changes.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9382 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
tye
2009-10-30 05:11:38 +00:00
parent 72f01d4b4a
commit b45b45b2d2
24 changed files with 1006 additions and 583 deletions
Download Patch File Download Diff File Expand all files Collapse all files

90
MdeModulePkg/Include/Library/IpIoLib.h
View File

@@ -81,41 +81,36 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
extern EFI_IP4_CONFIG_DATA mIp4IoDefaultIpConfigData;
extern EFI_IP6_CONFIG_DATA mIp6IoDefaultIpConfigData;
typedef enum {
IP_VERSION_4 = 4,
IP_VERSION_6 = 6
} IP_VERSION;
#define IP_VERSION_4 4
#define IP_VERSION_6 6
///
/// This error will be delivered to the
/// listening transportation layer protocol
/// that consumes IpIO.
///
typedef enum {
ICMP_ERR_UNREACH_NET = 0,
ICMP_ERR_UNREACH_HOST,
ICMP_ERR_UNREACH_PROTOCOL,
ICMP_ERR_UNREACH_PORT,
ICMP_ERR_MSGSIZE,
ICMP_ERR_UNREACH_SRCFAIL,
ICMP_ERR_TIMXCEED_INTRANS,
ICMP_ERR_TIMXCEED_REASS,
ICMP_ERR_QUENCH,
ICMP_ERR_PARAMPROB
} ICMP_ERROR;
typedef enum {
ICMP6_ERR_UNREACH_NET = 0,
ICMP6_ERR_UNREACH_HOST,
ICMP6_ERR_UNREACH_PROTOCOL,
ICMP6_ERR_UNREACH_PORT,
ICMP6_ERR_PACKAGE_TOOBIG,
ICMP6_ERR_TIMXCEED_HOPLIMIT,
ICMP6_ERR_TIMXCEED_REASS,
ICMP6_ERR_PARAMPROB_HEADER,
ICMP6_ERR_PARAMPROB_NEXHEADER,
ICMP6_ERR_PARAMPROB_IPV6OPTION
} ICMP6_ERROR;
#define ICMP_ERR_UNREACH_NET 0
#define ICMP_ERR_UNREACH_HOST 1
#define ICMP_ERR_UNREACH_PROTOCOL 2
#define ICMP_ERR_UNREACH_PORT 3
#define ICMP_ERR_MSGSIZE 4
#define ICMP_ERR_UNREACH_SRCFAIL 5
#define ICMP_ERR_TIMXCEED_INTRANS 6
#define ICMP_ERR_TIMXCEED_REASS 7
#define ICMP_ERR_QUENCH 8
#define ICMP_ERR_PARAMPROB 9
#define ICMP6_ERR_UNREACH_NET 0
#define ICMP6_ERR_UNREACH_HOST 1
#define ICMP6_ERR_UNREACH_PROTOCOL 2
#define ICMP6_ERR_UNREACH_PORT 3
#define ICMP6_ERR_PACKAGE_TOOBIG 4
#define ICMP6_ERR_TIMXCEED_HOPLIMIT 5
#define ICMP6_ERR_TIMXCEED_REASS 6
#define ICMP6_ERR_PARAMPROB_HEADER 7
#define ICMP6_ERR_PARAMPROB_NEXHEADER 8
#define ICMP6_ERR_PARAMPROB_IPV6OPTION 9
///
/// The helper struct for IpIoGetIcmpErrStatus(). It is for internal use only.
@@ -150,17 +145,24 @@ typedef union {
EFI_IP6_CONFIG_DATA Ip6CfgData;
} IP_IO_IP_CONFIG_DATA;
typedef union {
EFI_IP4_HEADER *Ip4Hdr;
EFI_IP6_HEADER *Ip6Hdr;
} IP_IO_IP_HEADER;
typedef union {
IP4_ADDR SubnetMask;
UINT8 PrefixLength;
} IP_IO_IP_MASK;
///
/// The IP session for an IP receive packet.
///
typedef struct _EFI_NET_SESSION_DATA {
EFI_IP_ADDRESS Source; ///< Source IP of the received packet
EFI_IP_ADDRESS Dest; ///< Destination IP of the received packet
union {
EFI_IP4_HEADER *Ip4Hdr; ///< IP4 header of the received packet
EFI_IP6_HEADER *Ip6Hdr; ///< IP6 header of the received packet
} IpHdr;
IP_VERSION IpVersion; ///< The IP version of the received packet
IP_IO_IP_HEADER IpHdr; ///< IP header of the received packet
UINT8 IpVersion; ///< The IP version of the received packet
} EFI_NET_SESSION_DATA;
/**
@@ -178,7 +180,7 @@ typedef
VOID
(*PKT_RCVD_NOTIFY) (
IN EFI_STATUS Status,
IN ICMP_ERROR IcmpErr,
IN UINT8 IcmpErr,
IN EFI_NET_SESSION_DATA *NetSession,
IN NET_BUF *Pkt,
IN VOID *Context
@@ -249,10 +251,7 @@ typedef struct _IP_IO {
VOID *SndContext; ///< See IP_IO_OPEN_DATA::SndContext
PKT_RCVD_NOTIFY PktRcvdNotify; ///< See IP_IO_OPEN_DATA::PktRcvdNotify
PKT_SENT_NOTIFY PktSentNotify; ///< See IP_IO_OPEN_DATA::PktSentNotify
//
// Ip Version
//
IP_VERSION IpVersion;
UINT8 IpVersion;
} IP_IO;
///
@@ -289,16 +288,13 @@ typedef struct _IP_IO_SEND_ENTRY {
///
typedef struct _IP_IO_IP_INFO {
EFI_IP_ADDRESS Addr;
union {
IP4_ADDR SubnetMask;
UINT8 PrefixLength;
} PreMask;
IP_IO_IP_MASK PreMask;
LIST_ENTRY Entry;
EFI_HANDLE ChildHandle;
VOID *Ip;
IP_IO_IP_COMPLETION_TOKEN DummyRcvToken;
INTN RefCnt;
IP_VERSION IpVersion;
UINT8 IpVersion;
} IP_IO_IP_INFO;
/**
@@ -322,7 +318,7 @@ EFIAPI
IpIoCreate (
IN EFI_HANDLE Image,
IN EFI_HANDLE Controller,
IN IP_VERSION IpVersion
IN UINT8 IpVersion
);
/**
@@ -518,7 +514,7 @@ IP_IO_IP_INFO *
EFIAPI
IpIoFindSender (
IN OUT IP_IO **IpIo,
IN IP_VERSION IpVersion,
IN UINT8 IpVersion,
IN EFI_IP_ADDRESS *Src
);
@@ -541,8 +537,8 @@ IpIoFindSender (
EFI_STATUS
EFIAPI
IpIoGetIcmpErrStatus (
IN ICMP_ERROR IcmpError,
IN IP_VERSION IpVersion,
IN UINT8 IcmpError,
IN UINT8 IpVersion,
OUT BOOLEAN *IsHard OPTIONAL,
OUT BOOLEAN *Notify OPTIONAL
);

87
MdeModulePkg/Include/Library/NetLib.h
View File

@@ -22,34 +22,33 @@ typedef UINT32 IP4_ADDR;
typedef UINT32 TCP_SEQNO;
typedef UINT16 TCP_PORTNO;
typedef enum {
NET_ETHER_ADDR_LEN = 6,
NET_IFTYPE_ETHERNET = 0x01,
EFI_IP_PROTO_UDP = 0x11,
EFI_IP_PROTO_TCP = 0x06,
EFI_IP_PROTO_ICMP = 0x01,
#define NET_ETHER_ADDR_LEN 6
#define NET_IFTYPE_ETHERNET 0x01
//
// The address classification
//
IP4_ADDR_CLASSA = 1,
IP4_ADDR_CLASSB,
IP4_ADDR_CLASSC,
IP4_ADDR_CLASSD,
IP4_ADDR_CLASSE,
#define EFI_IP_PROTO_UDP 0x11
#define EFI_IP_PROTO_TCP 0x06
#define EFI_IP_PROTO_ICMP 0x01
IP4_MASK_NUM = 33
} IP4_CLASS_TYPE;
//
// The address classification
//
#define IP4_ADDR_CLASSA 1
#define IP4_ADDR_CLASSB 2
#define IP4_ADDR_CLASSC 3
#define IP4_ADDR_CLASSD 4
#define IP4_ADDR_CLASSE 5
#define IP4_MASK_NUM 33
#define IP6_HOP_BY_HOP 0
#define IP6_DESTINATION 60
#define IP6_FRAGMENT 44
#define IP6_AH 51
#define IP6_ESP 50
#define IP6_NO_NEXT_HEADER 59
typedef enum {
IP6_HOP_BY_HOP = 0,
IP6_DESTINATION = 60,
IP6_FRAGMENT = 44,
IP6_AH = 51,
IP6_ESP = 50,
IP6_NO_NEXT_HEADER = 59
} IP6_EXTENSION_HEADER_TYPE;
#pragma pack(1)
@@ -275,6 +274,23 @@ Ip6IsValidUnicast (
IN EFI_IPv6_ADDRESS *Ip6
);
/**
Switches the endianess of an IPv6 address
This function swaps the bytes in a 128-bit IPv6 address to switch the value
from little endian to big endian or vice versa. The byte swapped value is
returned.
@param Ip6 Points to an IPv6 address
@return The byte swapped IPv6 address.
**/
EFI_IPv6_ADDRESS *
Ip6Swap128 (
EFI_IPv6_ADDRESS *Ip6
);
extern IP4_ADDR gIp4AllMasks[IP4_MASK_NUM];
@@ -886,20 +902,19 @@ NetLibDefaultUnload (
IN EFI_HANDLE ImageHandle
);
typedef enum {
//
//Various signatures
//
NET_BUF_SIGNATURE = SIGNATURE_32 ('n', 'b', 'u', 'f'),
NET_VECTOR_SIGNATURE = SIGNATURE_32 ('n', 'v', 'e', 'c'),
NET_QUE_SIGNATURE = SIGNATURE_32 ('n', 'b', 'q', 'u'),
//
//Various signatures
//
#define NET_BUF_SIGNATURE SIGNATURE_32 ('n', 'b', 'u', 'f')
#define NET_VECTOR_SIGNATURE SIGNATURE_32 ('n', 'v', 'e', 'c')
#define NET_QUE_SIGNATURE SIGNATURE_32 ('n', 'b', 'q', 'u')
NET_PROTO_DATA = 64, // Opaque buffer for protocols
NET_BUF_HEAD = 1, // Trim or allocate space from head
NET_BUF_TAIL = 0, // Trim or allocate space from tail
NET_VECTOR_OWN_FIRST = 0x01 // We allocated the 1st block in the vector
} NET_SIGNATURE_TYPE;
#define NET_PROTO_DATA 64 // Opaque buffer for protocols
#define NET_BUF_HEAD 1 // Trim or allocate space from head
#define NET_BUF_TAIL 0 // Trim or allocate space from tail
#define NET_VECTOR_OWN_FIRST 0x01 // We allocated the 1st block in the vector
#define NET_CHECK_SIGNATURE(PData, SIGNATURE) \
ASSERT (((PData) != NULL) && ((PData)->Signature == (SIGNATURE)))

192
MdeModulePkg/Include/Library/UdpIoLib.h
View File

@@ -2,7 +2,7 @@
This library is used to share code between UEFI network stack modules.
It provides the helper routines to access UDP service. It is used by both DHCP and MTFTP.
Copyright (c) 2006 - 2008, Intel Corporation.<BR>
Copyright (c) 2006 - 2009, Intel Corporation.<BR>
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<BR>
@@ -13,33 +13,36 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _UDP4IO_H_
#define _UDP4IO_H_
#ifndef _UDP_IO_H_
#define _UDP_IO_H_
#include <Protocol/Udp4.h>
#include <Protocol/Udp6.h>
#include <Library/NetLib.h>
typedef struct _UDP_IO_PORT UDP_IO_PORT;
typedef struct _UDP_IO UDP_IO;
///
/// Signatures used by UdpIo Library.
///
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;
#define UDP_IO_RX_SIGNATURE SIGNATURE_32 ('U', 'D', 'P', 'R')
#define UDP_IO_TX_SIGNATURE SIGNATURE_32 ('U', 'D', 'P', 'T')
#define UDP_IO_SIGNATURE SIGNATURE_32 ('U', 'D', 'P', 'I')
#define UDP_IO_UDP4_VERSION 4
#define UDP_IO_UDP6_VERSION 6
///
/// The Udp4 address pair.
/// The UDP address pair.
///
typedef struct {
IP4_ADDR LocalAddr;
EFI_IP_ADDRESS LocalAddr;
UINT16 LocalPort;
IP4_ADDR RemoteAddr;
EFI_IP_ADDRESS RemoteAddr;
UINT16 RemotePort;
} UDP_POINTS;
} UDP_END_POINT;
/**
Prototype called when receiving or sending packets to or from a UDP point.
@@ -50,7 +53,7 @@ typedef struct {
provided to the callback as a reference.
@param[in] Packet Packet received or sent
@param[in] Points The Udp4 address pair corresponds to the Udp4 IO
@param[in] EndPoint The UDP address pair corresponds to the UDP IO
@param[in] IoStatus Packet receiving or sending status
@param[in] Context User-defined data when calling UdpIoRecvDatagram() or
UdpIoSendDatagram()
@@ -59,7 +62,7 @@ typedef
VOID
(*UDP_IO_CALLBACK) (
IN NET_BUF *Packet,
IN UDP_POINTS *Points,
IN UDP_END_POINT *EndPoint,
IN EFI_STATUS IoStatus,
IN VOID *Context
);
@@ -72,17 +75,24 @@ VOID
/// time. HeadLen gives the length of the application's header. UDP_IO will
/// make the application's header continuous before delivering up.
///
typedef union {
EFI_UDP4_COMPLETION_TOKEN Udp4;
EFI_UDP6_COMPLETION_TOKEN Udp6;
} UDP_COMPLETION_TOKEN;
typedef struct {
UINT32 Signature;
UDP_IO_PORT *UdpIo;
UINT32 Signature;
UDP_IO *UdpIo;
UDP_IO_CALLBACK CallBack;
VOID *Context;
UDP_IO_CALLBACK CallBack;
VOID *Context;
UINT32 HeadLen;
UINT32 HeadLen;
EFI_UDP4_COMPLETION_TOKEN UdpToken;
UDP_COMPLETION_TOKEN Token;
} UDP_RX_TOKEN;
///
/// This structure is used internally by UdpIo Library.
///
@@ -90,32 +100,41 @@ typedef struct {
/// the CallBack will be called. There can be several transmit requests. All transmit requests
/// are linked in a list.
///
typedef union {
EFI_UDP4_SESSION_DATA Udp4;
EFI_UDP6_SESSION_DATA Udp6;
} UDP_SESSION_DATA;
typedef union {
EFI_UDP4_TRANSMIT_DATA Udp4;
EFI_UDP6_TRANSMIT_DATA Udp6;
} UDP_TRANSMIT_DATA;
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;
UINT32 Signature;
LIST_ENTRY Link;
UDP_IO *UdpIo;
UDP_IO_CALLBACK CallBack;
NET_BUF *Packet;
VOID *Context;
EFI_IPv4_ADDRESS Gateway;
UDP_SESSION_DATA Session;
UDP_COMPLETION_TOKEN Token;
UDP_TRANSMIT_DATA Data;
} UDP_TX_TOKEN;
///
/// Type defined as UDP_IO_PORT.
/// Type defined as UDP_IO.
///
/// This data structure wraps the Udp4 instance and configuration.
/// UdpIo Library uses this structure for all Udp4 operations.
/// This data structure wraps the UDP instance and configuration.
/// UdpIo Library uses this structure for all Udp4 or Udp6 operations.
///
struct _UDP_IO_PORT {
struct _UDP_IO {
UINT32 Signature;
LIST_ENTRY Link;
INTN RefCnt;
UINT8 UdpVersion;
//
// Handle used to create/destory UDP child
@@ -124,30 +143,38 @@ struct _UDP_IO_PORT {
EFI_HANDLE Image;
EFI_HANDLE UdpHandle;
EFI_UDP4_PROTOCOL *Udp; ///< The wrapped Udp4 instance.
EFI_UDP4_CONFIG_DATA UdpConfig;
EFI_SIMPLE_NETWORK_MODE SnpMode;
LIST_ENTRY SentDatagram; ///< A list of UDP_TX_TOKEN.
UDP_RX_TOKEN *RecvRequest;
union {
EFI_UDP4_PROTOCOL *Udp4;
EFI_UDP6_PROTOCOL *Udp6;
} Protocol;
union {
EFI_UDP4_CONFIG_DATA Udp4;
EFI_UDP6_CONFIG_DATA Udp6;
} Config;
};
/**
Prototype called when UdpIo Library configures a Udp4 instance.
Prototype called when UdpIo Library configures a UDP instance.
The prototype is set and called when creating a UDP_IO_PORT in UdpIoCreatePort().
The prototype is set and called when creating a UDP_IO in UdpIoCreatePort().
@param[in] UdpIo The UDP_IO_PORT to configure
@param[in] UdpIo The UDP_IO to configure
@param[in] Context User-defined data when calling UdpIoCreatePort()
@retval EFI_SUCCESS The configuration succeeded
@retval Others The UDP_IO_PORT fails to configure indicating
@retval Others The UDP_IO fails to configure indicating
UdpIoCreatePort() should fail
**/
typedef
EFI_STATUS
(*UDP_IO_CONFIG) (
IN UDP_IO_PORT *UdpIo,
IN UDP_IO *UdpIo,
IN VOID *Context
);
@@ -172,7 +199,7 @@ BOOLEAN
Cancel all sent datagrams selected by the parameter ToCancel.
If ToCancel is NULL, all the datagrams are cancelled.
@param[in] UdpIo The UDP_IO_PORT to cancel packet.
@param[in] UdpIo The UDP_IO to cancel packet.
@param[in] IoStatus The IoStatus to return to the packet owners.
@param[in] ToCancel Sets the criteria for canceling a packet.
@param[in] Context The opaque parameter to the ToCancel.
@@ -181,14 +208,14 @@ BOOLEAN
VOID
EFIAPI
UdpIoCancelDgrams (
IN UDP_IO_PORT *UdpIo,
IN UDP_IO *UdpIo,
IN EFI_STATUS IoStatus,
IN UDP_IO_TO_CANCEL ToCancel, OPTIONAL
IN UDP_IO_TO_CANCEL ToCancel OPTIONAL,
IN VOID *Context
);
/**
Creates a UDP_IO_PORT to access the UDP service. It creates and configures
Creates a UDP_IO to access the UDP service. It creates and configures
a UDP child.
This function:
@@ -199,65 +226,67 @@ UdpIoCancelDgrams (
@param[in] Controller The controller that has the UDP service binding.
protocol installed.
@param[in] Image The image handle for the driver.
@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_PORT or NULL if failed.
@return Newly-created UDP_IO or NULL if failed.
**/
UDP_IO_PORT *
UDP_IO *
EFIAPI
UdpIoCreatePort (
UdpIoCreateIo (
IN EFI_HANDLE Controller,
IN EFI_HANDLE Image,
IN EFI_HANDLE ImageHandle,
IN UDP_IO_CONFIG Configure,
IN UINT8 UdpVersion,
IN VOID *Context
);
/**
Free the UDP_IO_PORT and all its related resources.
Free the UDP_IO and all its related resources.
The function cancels all sent datagrams and receive requests.
@param[in] UdpIo The UDP_IO_PORT to free.
@param[in] UdpIo The UDP_IO to free.
@retval EFI_SUCCESS The UDP_IO_PORT is freed.
@retval EFI_SUCCESS The UDP_IO is freed.
**/
EFI_STATUS
EFIAPI
UdpIoFreePort (
IN UDP_IO_PORT *UdpIo
UdpIoFreeIo (
IN UDP_IO *UdpIo
);
/**
Cleans up the UDP_IO_PORT without freeing it. Call this function
if you intend to later re-use the UDP_IO_PORT.
Cleans up the UDP_IO without freeing it. Call this function
if you intend to later re-use the UDP_IO.
This function releases all transmitted datagrams and receive requests and configures NULL for the UDP instance.
@param[in] UdpIo The UDP_IO_PORT to clean up.
@param[in] UdpIo The UDP_IO to clean up.
**/
VOID
EFIAPI
UdpIoCleanPort (
IN UDP_IO_PORT *UdpIo
UdpIoCleanIo (
IN UDP_IO *UdpIo
);
/**
Sends a packet through the UDP_IO_PORT.
Send a packet through the UDP_IO.
The packet will be wrapped in UDP_TX_TOKEN. The function specific in the CallBack parameter will be called
when the packet is sent. If specified, the optional parameter EndPoint overrides the default
address pair.
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_PORT to send the packet through.
@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. Overrides the
@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] 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.
@@ -270,10 +299,10 @@ UdpIoCleanPort (
EFI_STATUS
EFIAPI
UdpIoSendDatagram (
IN UDP_IO_PORT *UdpIo,
IN UDP_IO *UdpIo,
IN NET_BUF *Packet,
IN UDP_POINTS *EndPoint, OPTIONAL
IN IP4_ADDR Gateway,
IN UDP_END_POINT *EndPoint OPTIONAL,
IN EFI_IP_ADDRESS *Gateway OPTIONAL,
IN UDP_IO_CALLBACK CallBack,
IN VOID *Context
);
@@ -281,43 +310,46 @@ UdpIoSendDatagram (
/**
Cancel a single sent datagram.
@param[in] UdpIo The UDP_IO_PORT from which to cancel the packet
@param[in] UdpIo The UDP_IO from which to cancel the packet
@param[in] Packet The packet to cancel
**/
VOID
EFIAPI
UdpIoCancelSentDatagram (
IN UDP_IO_PORT *UdpIo,
IN UDP_IO *UdpIo,
IN NET_BUF *Packet
);
/**
Issue a receive request to the UDP_IO_PORT.
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. Therefore, one common usage model is
to invoke this function inside its Callback function when the former packet
is processed.
@param[in] UdpIo The UDP_IO_PORT to receive the packet from.
@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.
@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_PORT *UdpIo,
IN UDP_IO *UdpIo,
IN UDP_IO_CALLBACK CallBack,
IN VOID *Context,
IN UINT32 HeadLen
);
#endif