[mirror_edk2.git] / NetworkPkg / Include / Library / UdpIoLib.h

/** @file\r
  This library is used to share code between UEFI network stack modules.\r
  It provides the helper routines to access UDP service. It is used by both DHCP and MTFTP.\r
\r
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#ifndef _UDP_IO_H_\r
#define _UDP_IO_H_\r
\r
#include <Protocol/Udp4.h>\r
#include <Protocol/Udp6.h>\r
\r
#include <Library/NetLib.h>\r
\r
typedef struct _UDP_IO UDP_IO;\r
\r
///\r
/// Signatures used by UdpIo Library.\r
///\r
\r
#define UDP_IO_RX_SIGNATURE  SIGNATURE_32 ('U', 'D', 'P', 'R')\r
#define UDP_IO_TX_SIGNATURE  SIGNATURE_32 ('U', 'D', 'P', 'T')\r
#define UDP_IO_SIGNATURE     SIGNATURE_32 ('U', 'D', 'P', 'I')\r
\r
#define UDP_IO_UDP4_VERSION  4\r
#define UDP_IO_UDP6_VERSION  6\r
\r
///\r
/// The UDP address pair.\r
///\r
typedef struct {\r
  EFI_IP_ADDRESS            LocalAddr;\r
  UINT16                    LocalPort;\r
  EFI_IP_ADDRESS            RemoteAddr;\r
  UINT16                    RemotePort;\r
} UDP_END_POINT;\r
\r
/**\r
  Prototype called when receiving or sending packets to or from a UDP point.\r
\r
  This prototype is used by both receive and sending when calling\r
  UdpIoRecvDatagram() or UdpIoSendDatagram(). When receiving, Netbuf is allocated by the\r
  UDP access point and released by the user. When sending, the user allocates the NetBuf,\r
  which is then provided to the callback as a reference.\r
\r
  @param[in] Packet       The packet received or sent.\r
  @param[in] EndPoint     The UDP address pair corresponds to the UDP IO.\r
  @param[in] IoStatus     The packet receiving or sending status.\r
  @param[in] Context      The user-defined data when calling UdpIoRecvDatagram() or\r
                          UdpIoSendDatagram().\r
**/\r
typedef\r
VOID\r
(EFIAPI *UDP_IO_CALLBACK) (\r
  IN NET_BUF                *Packet,\r
  IN UDP_END_POINT          *EndPoint,\r
  IN EFI_STATUS             IoStatus,\r
  IN VOID                   *Context\r
  );\r
\r
///\r
/// This structure is used internally by the UdpIo Library.\r
///\r
/// Each receive request is wrapped in an UDP_RX_TOKEN. Upon completion,\r
/// the CallBack will be called. Only one receive request is sent to UDP at a\r
/// time. HeadLen gives the length of the application's header. UDP_IO will\r
/// make the application's header continuous before delivering up.\r
///\r
typedef union {\r
  EFI_UDP4_COMPLETION_TOKEN   Udp4;\r
  EFI_UDP6_COMPLETION_TOKEN   Udp6;\r
} UDP_COMPLETION_TOKEN;\r
\r
typedef struct {\r
  UINT32                      Signature;\r
  UDP_IO                      *UdpIo;\r
\r
  UDP_IO_CALLBACK             CallBack;\r
  VOID                        *Context;\r
  UINT32                      HeadLen;\r
\r
  UDP_COMPLETION_TOKEN        Token;\r
} UDP_RX_TOKEN;\r
\r
\r
\r
///\r
/// This structure is used internally by UdpIo Library.\r
///\r
/// Each transmit request is wrapped in an UDP_TX_TOKEN. Upon completion,\r
/// the CallBack will be called. There can be several transmit requests. All transmit\r
/// requests are linked in a list.\r
///\r
\r
typedef union {\r
  EFI_UDP4_SESSION_DATA       Udp4;\r
  EFI_UDP6_SESSION_DATA       Udp6;\r
} UDP_SESSION_DATA;\r
\r
typedef union {\r
  EFI_UDP4_TRANSMIT_DATA      Udp4;\r
  EFI_UDP6_TRANSMIT_DATA      Udp6;\r
} UDP_TRANSMIT_DATA;\r
\r
typedef struct {\r
  UINT32                      Signature;\r
  LIST_ENTRY                  Link;\r
  UDP_IO                      *UdpIo;\r
  UDP_IO_CALLBACK             CallBack;\r
  NET_BUF                     *Packet;\r
  VOID                        *Context;\r
  EFI_IPv4_ADDRESS            Gateway;\r
  UDP_SESSION_DATA            Session;\r
  UDP_COMPLETION_TOKEN        Token;\r
  UDP_TRANSMIT_DATA           Data;\r
} UDP_TX_TOKEN;\r
\r
///\r
/// Type defined as UDP_IO.\r
///\r
/// This data structure wraps the UDP instance and configuration.\r
/// UdpIo Library uses this structure for all Udp4 or Udp6 operations.\r
///\r
struct _UDP_IO {\r
  UINT32                    Signature;\r
  LIST_ENTRY                Link;\r
  INTN                      RefCnt;\r
  UINT8                     UdpVersion;\r
\r
  //\r
  // Handle used to create/destroy UDP child\r
  //\r
  EFI_HANDLE                Controller;\r
  EFI_HANDLE                Image;\r
  EFI_HANDLE                UdpHandle;\r
\r
  EFI_SIMPLE_NETWORK_MODE   SnpMode;\r
\r
  LIST_ENTRY                SentDatagram;   ///< A list of UDP_TX_TOKEN.\r
  UDP_RX_TOKEN              *RecvRequest;\r
\r
  union {\r
    EFI_UDP4_PROTOCOL       *Udp4;\r
    EFI_UDP6_PROTOCOL       *Udp6;\r
  } Protocol;\r
\r
  union {\r
    EFI_UDP4_CONFIG_DATA    Udp4;\r
    EFI_UDP6_CONFIG_DATA    Udp6;\r
  } Config;\r
};\r
\r
/**\r
  The prototype called when UdpIo Library configures a UDP instance.\r
\r
  The prototype is set and called when creating a UDP_IO in UdpIoCreatePort().\r
\r
  @param[in] UdpIo         The UDP_IO to configure.\r
  @param[in] Context       The user-defined data when calling UdpIoCreatePort().\r
\r
  @retval EFI_SUCCESS  The configuration succeeded.\r
  @retval Others       The UDP_IO fails to configure indicating\r
                       UdpIoCreatePort() should fail.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *UDP_IO_CONFIG) (\r
  IN UDP_IO                 *UdpIo,\r
  IN VOID                   *Context\r
  );\r
\r
/**\r
  The select function to decide whether to cancel the UDP_TX_TOKEN.\r
\r
  @param[in] Token        The UDP_TX_TOKEN to decide whether to cancel.\r
  @param[in] Context      User-defined data in UdpIoCancelDgrams().\r
\r
  @retval TRUE        Cancel the UDP_TX_TOKEN.\r
  @retval FALSE       Do not cancel this UDP_TX_TOKEN.\r
\r
**/\r
typedef\r
BOOLEAN\r
(EFIAPI *UDP_IO_TO_CANCEL) (\r
  IN UDP_TX_TOKEN           *Token,\r
  IN VOID                   *Context\r
  );\r
\r
/**\r
  Cancel all the sent datagram that pass the selection criteria of ToCancel.\r
\r
  If ToCancel is NULL, all the datagrams are cancelled.\r
  If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
\r
  @param[in]  UdpIo                 The UDP_IO to cancel packet.\r
  @param[in]  IoStatus              The IoStatus to return to the packet owners.\r
  @param[in]  ToCancel              The select function to test whether to cancel this\r
                                    packet or not.\r
  @param[in]  Context               The opaque parameter to the ToCancel.\r
\r
**/\r
VOID\r
EFIAPI\r
UdpIoCancelDgrams (\r
  IN UDP_IO                 *UdpIo,\r
  IN EFI_STATUS             IoStatus,\r
  IN UDP_IO_TO_CANCEL       ToCancel,        OPTIONAL\r
  IN VOID                   *Context         OPTIONAL\r
  );\r
\r
/**\r
  Creates a UDP_IO to access the UDP service. It creates and configures\r
  a UDP child.\r
\r
  If Configure is NULL, then ASSERT().\r
  If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
\r
  It locates the UDP service binding prototype on the Controller parameter\r
  uses the UDP service binding prototype to create a UDP child (also known as\r
  a UDP instance) configures the UDP child by calling Configure function prototype.\r
  Any failures in creating or configuring the UDP child return NULL for failure.\r
\r
  @param[in]  Controller            The controller that has the UDP service binding.\r
                                    protocol installed.\r
  @param[in]  ImageHandle           The image handle for the driver.\r
  @param[in]  Configure             The function to configure the created UDP child.\r
  @param[in]  UdpVersion            The UDP protocol version, UDP4 or UDP6.\r
  @param[in]  Context               The opaque parameter for the Configure function.\r
\r
  @return The newly-created UDP_IO, or NULL if failed.\r
\r
**/\r
UDP_IO *\r
EFIAPI\r
UdpIoCreateIo (\r
  IN  EFI_HANDLE            Controller,\r
  IN  EFI_HANDLE            ImageHandle,\r
  IN  UDP_IO_CONFIG         Configure,\r
  IN  UINT8                 UdpVersion,\r
  IN  VOID                  *Context\r
  );\r
\r
/**\r
  Free the UDP_IO and all its related resources.\r
\r
  If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
\r
  The function cancels all sent datagrams and receive requests.\r
\r
  @param[in]  UdpIo             The UDP_IO to free.\r
\r
  @retval EFI_SUCCESS           The UDP_IO is freed.\r
  @retval Others                Failed to free UDP_IO.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UdpIoFreeIo (\r
  IN  UDP_IO                *UdpIo\r
  );\r
\r
/**\r
  Cleans up the UDP_IO without freeing it. Call this function\r
  if you intend to later re-use the UDP_IO.\r
\r
  If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
\r
  This function releases all transmitted datagrams and receive requests and configures NULL for the UDP instance.\r
\r
  @param[in]  UdpIo                 The UDP_IO to clean up.\r
\r
**/\r
VOID\r
EFIAPI\r
UdpIoCleanIo (\r
  IN  UDP_IO                *UdpIo\r
  );\r
\r
/**\r
  Send a packet through the UDP_IO.\r
\r
  If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
\r
  The packet will be wrapped in UDP_TX_TOKEN. Function Callback will be called\r
  when the packet is sent. The optional parameter EndPoint overrides the default\r
  address pair if specified.\r
\r
  @param[in]  UdpIo                 The UDP_IO to send the packet through.\r
  @param[in]  Packet                The packet to send.\r
  @param[in]  EndPoint              The local and remote access point. Override the\r
                                    default address pair set during configuration.\r
  @param[in]  Gateway               The gateway to use.\r
  @param[in]  CallBack              The function being called when packet is\r
                                    transmitted or failed.\r
  @param[in]  Context               The opaque parameter passed to CallBack.\r
\r
  @retval EFI_OUT_OF_RESOURCES  Failed to allocate resource for the packet.\r
  @retval EFI_SUCCESS           The packet is successfully delivered to UDP for\r
                                transmission.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UdpIoSendDatagram (\r
  IN  UDP_IO                *UdpIo,\r
  IN  NET_BUF               *Packet,\r
  IN  UDP_END_POINT         *EndPoint OPTIONAL,\r
  IN  EFI_IP_ADDRESS        *Gateway  OPTIONAL,\r
  IN  UDP_IO_CALLBACK       CallBack,\r
  IN  VOID                  *Context\r
  );\r
\r
/**\r
  Cancel a single sent datagram.\r
\r
  @param[in]  UdpIo                 The UDP_IO from which to cancel the packet\r
  @param[in]  Packet                The packet to cancel\r
\r
**/\r
VOID\r
EFIAPI\r
UdpIoCancelSentDatagram (\r
  IN  UDP_IO                *UdpIo,\r
  IN  NET_BUF               *Packet\r
  );\r
\r
/**\r
  Issue a receive request to the UDP_IO.\r
\r
  If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
\r
  This function is called when upper-layer needs packet from UDP for processing.\r
  Only one receive request is acceptable at a time. Therefore, one common usage model is\r
  to invoke this function inside its Callback function when the former packet\r
  is processed.\r
\r
  @param[in]  UdpIo                 The UDP_IO to receive the packet from.\r
  @param[in]  CallBack              The call back function to execute when the packet\r
                                    is received.\r
  @param[in]  Context               The opaque context passed to Callback.\r
  @param[in]  HeadLen               The length of the upper-layer's protocol header.\r
\r
  @retval EFI_ALREADY_STARTED   There is already a pending receive request. Only\r
                                one receive request is supported at a time.\r
  @retval EFI_OUT_OF_RESOURCES  Failed to allocate needed resources.\r
  @retval EFI_SUCCESS           The receive request was issued successfully.\r
  @retval EFI_UNSUPPORTED       The UDP version in UDP_IO is not supported.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UdpIoRecvDatagram (\r
  IN  UDP_IO                *UdpIo,\r
  IN  UDP_IO_CALLBACK       CallBack,\r
  IN  VOID                  *Context,\r
  IN  UINT32                HeadLen\r
  );\r
\r
#endif\r
\r
Commit	Line	Data
	1	/** @file\r
	2	This library is used to share code between UEFI network stack modules.\r
	3	It provides the helper routines to access UDP service. It is used by both DHCP and MTFTP.\r
	4	\r
	5	Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
	6	SPDX-License-Identifier: BSD-2-Clause-Patent\r
	7	\r
	8	**/\r
	9	\r
	10	#ifndef _UDP_IO_H_\r
	11	#define _UDP_IO_H_\r
	12	\r
	13	#include <Protocol/Udp4.h>\r
	14	#include <Protocol/Udp6.h>\r
	15	\r
	16	#include <Library/NetLib.h>\r
	17	\r
	18	typedef struct _UDP_IO UDP_IO;\r
	19	\r
	20	///\r
	21	/// Signatures used by UdpIo Library.\r
	22	///\r
	23	\r
	24	#define UDP_IO_RX_SIGNATURE SIGNATURE_32 ('U', 'D', 'P', 'R')\r
	25	#define UDP_IO_TX_SIGNATURE SIGNATURE_32 ('U', 'D', 'P', 'T')\r
	26	#define UDP_IO_SIGNATURE SIGNATURE_32 ('U', 'D', 'P', 'I')\r
	27	\r
	28	#define UDP_IO_UDP4_VERSION 4\r
	29	#define UDP_IO_UDP6_VERSION 6\r
	30	\r
	31	///\r
	32	/// The UDP address pair.\r
	33	///\r
	34	typedef struct {\r
	35	EFI_IP_ADDRESS LocalAddr;\r
	36	UINT16 LocalPort;\r
	37	EFI_IP_ADDRESS RemoteAddr;\r
	38	UINT16 RemotePort;\r
	39	} UDP_END_POINT;\r
	40	\r
	41	/**\r
	42	Prototype called when receiving or sending packets to or from a UDP point.\r
	43	\r
	44	This prototype is used by both receive and sending when calling\r
	45	UdpIoRecvDatagram() or UdpIoSendDatagram(). When receiving, Netbuf is allocated by the\r
	46	UDP access point and released by the user. When sending, the user allocates the NetBuf,\r
	47	which is then provided to the callback as a reference.\r
	48	\r
	49	@param[in] Packet The packet received or sent.\r
	50	@param[in] EndPoint The UDP address pair corresponds to the UDP IO.\r
	51	@param[in] IoStatus The packet receiving or sending status.\r
	52	@param[in] Context The user-defined data when calling UdpIoRecvDatagram() or\r
	53	UdpIoSendDatagram().\r
	54	**/\r
	55	typedef\r
	56	VOID\r
	57	(EFIAPI *UDP_IO_CALLBACK) (\r
	58	IN NET_BUF *Packet,\r
	59	IN UDP_END_POINT *EndPoint,\r
	60	IN EFI_STATUS IoStatus,\r
	61	IN VOID *Context\r
	62	);\r
	63	\r
	64	///\r
	65	/// This structure is used internally by the UdpIo Library.\r
	66	///\r
	67	/// Each receive request is wrapped in an UDP_RX_TOKEN. Upon completion,\r
	68	/// the CallBack will be called. Only one receive request is sent to UDP at a\r
	69	/// time. HeadLen gives the length of the application's header. UDP_IO will\r
	70	/// make the application's header continuous before delivering up.\r
	71	///\r
	72	typedef union {\r
	73	EFI_UDP4_COMPLETION_TOKEN Udp4;\r
	74	EFI_UDP6_COMPLETION_TOKEN Udp6;\r
	75	} UDP_COMPLETION_TOKEN;\r
	76	\r
	77	typedef struct {\r
	78	UINT32 Signature;\r
	79	UDP_IO *UdpIo;\r
	80	\r
	81	UDP_IO_CALLBACK CallBack;\r
	82	VOID *Context;\r
	83	UINT32 HeadLen;\r
	84	\r
	85	UDP_COMPLETION_TOKEN Token;\r
	86	} UDP_RX_TOKEN;\r
	87	\r
	88	\r
	89	\r
	90	///\r
	91	/// This structure is used internally by UdpIo Library.\r
	92	///\r
	93	/// Each transmit request is wrapped in an UDP_TX_TOKEN. Upon completion,\r
	94	/// the CallBack will be called. There can be several transmit requests. All transmit\r
	95	/// requests are linked in a list.\r
	96	///\r
	97	\r
	98	typedef union {\r
	99	EFI_UDP4_SESSION_DATA Udp4;\r
	100	EFI_UDP6_SESSION_DATA Udp6;\r
	101	} UDP_SESSION_DATA;\r
	102	\r
	103	typedef union {\r
	104	EFI_UDP4_TRANSMIT_DATA Udp4;\r
	105	EFI_UDP6_TRANSMIT_DATA Udp6;\r
	106	} UDP_TRANSMIT_DATA;\r
	107	\r
	108	typedef struct {\r
	109	UINT32 Signature;\r
	110	LIST_ENTRY Link;\r
	111	UDP_IO *UdpIo;\r
	112	UDP_IO_CALLBACK CallBack;\r
	113	NET_BUF *Packet;\r
	114	VOID *Context;\r
	115	EFI_IPv4_ADDRESS Gateway;\r
	116	UDP_SESSION_DATA Session;\r
	117	UDP_COMPLETION_TOKEN Token;\r
	118	UDP_TRANSMIT_DATA Data;\r
	119	} UDP_TX_TOKEN;\r
	120	\r
	121	///\r
	122	/// Type defined as UDP_IO.\r
	123	///\r
	124	/// This data structure wraps the UDP instance and configuration.\r
	125	/// UdpIo Library uses this structure for all Udp4 or Udp6 operations.\r
	126	///\r
	127	struct _UDP_IO {\r
	128	UINT32 Signature;\r
	129	LIST_ENTRY Link;\r
	130	INTN RefCnt;\r
	131	UINT8 UdpVersion;\r
	132	\r
	133	//\r
	134	// Handle used to create/destroy UDP child\r
	135	//\r
	136	EFI_HANDLE Controller;\r
	137	EFI_HANDLE Image;\r
	138	EFI_HANDLE UdpHandle;\r
	139	\r
	140	EFI_SIMPLE_NETWORK_MODE SnpMode;\r
	141	\r
	142	LIST_ENTRY SentDatagram; ///< A list of UDP_TX_TOKEN.\r
	143	UDP_RX_TOKEN *RecvRequest;\r
	144	\r
	145	union {\r
	146	EFI_UDP4_PROTOCOL *Udp4;\r
	147	EFI_UDP6_PROTOCOL *Udp6;\r
	148	} Protocol;\r
	149	\r
	150	union {\r
	151	EFI_UDP4_CONFIG_DATA Udp4;\r
	152	EFI_UDP6_CONFIG_DATA Udp6;\r
	153	} Config;\r
	154	};\r
	155	\r
	156	/**\r
	157	The prototype called when UdpIo Library configures a UDP instance.\r
	158	\r
	159	The prototype is set and called when creating a UDP_IO in UdpIoCreatePort().\r
	160	\r
	161	@param[in] UdpIo The UDP_IO to configure.\r
	162	@param[in] Context The user-defined data when calling UdpIoCreatePort().\r
	163	\r
	164	@retval EFI_SUCCESS The configuration succeeded.\r
	165	@retval Others The UDP_IO fails to configure indicating\r
	166	UdpIoCreatePort() should fail.\r
	167	**/\r
	168	typedef\r
	169	EFI_STATUS\r
	170	(EFIAPI *UDP_IO_CONFIG) (\r
	171	IN UDP_IO *UdpIo,\r
	172	IN VOID *Context\r
	173	);\r
	174	\r
	175	/**\r
	176	The select function to decide whether to cancel the UDP_TX_TOKEN.\r
	177	\r
	178	@param[in] Token The UDP_TX_TOKEN to decide whether to cancel.\r
	179	@param[in] Context User-defined data in UdpIoCancelDgrams().\r
	180	\r
	181	@retval TRUE Cancel the UDP_TX_TOKEN.\r
	182	@retval FALSE Do not cancel this UDP_TX_TOKEN.\r
	183	\r
	184	**/\r
	185	typedef\r
	186	BOOLEAN\r
	187	(EFIAPI *UDP_IO_TO_CANCEL) (\r
	188	IN UDP_TX_TOKEN *Token,\r
	189	IN VOID *Context\r
	190	);\r
	191	\r
	192	/**\r
	193	Cancel all the sent datagram that pass the selection criteria of ToCancel.\r
	194	\r
	195	If ToCancel is NULL, all the datagrams are cancelled.\r
	196	If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
	197	\r
	198	@param[in] UdpIo The UDP_IO to cancel packet.\r
	199	@param[in] IoStatus The IoStatus to return to the packet owners.\r
	200	@param[in] ToCancel The select function to test whether to cancel this\r
	201	packet or not.\r
	202	@param[in] Context The opaque parameter to the ToCancel.\r
	203	\r
	204	**/\r
	205	VOID\r
	206	EFIAPI\r
	207	UdpIoCancelDgrams (\r
	208	IN UDP_IO *UdpIo,\r
	209	IN EFI_STATUS IoStatus,\r
	210	IN UDP_IO_TO_CANCEL ToCancel, OPTIONAL\r
	211	IN VOID *Context OPTIONAL\r
	212	);\r
	213	\r
	214	/**\r
	215	Creates a UDP_IO to access the UDP service. It creates and configures\r
	216	a UDP child.\r
	217	\r
	218	If Configure is NULL, then ASSERT().\r
	219	If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
	220	\r
	221	It locates the UDP service binding prototype on the Controller parameter\r
	222	uses the UDP service binding prototype to create a UDP child (also known as\r
	223	a UDP instance) configures the UDP child by calling Configure function prototype.\r
	224	Any failures in creating or configuring the UDP child return NULL for failure.\r
	225	\r
	226	@param[in] Controller The controller that has the UDP service binding.\r
	227	protocol installed.\r
	228	@param[in] ImageHandle The image handle for the driver.\r
	229	@param[in] Configure The function to configure the created UDP child.\r
	230	@param[in] UdpVersion The UDP protocol version, UDP4 or UDP6.\r
	231	@param[in] Context The opaque parameter for the Configure function.\r
	232	\r
	233	@return The newly-created UDP_IO, or NULL if failed.\r
	234	\r
	235	**/\r
	236	UDP_IO *\r
	237	EFIAPI\r
	238	UdpIoCreateIo (\r
	239	IN EFI_HANDLE Controller,\r
	240	IN EFI_HANDLE ImageHandle,\r
	241	IN UDP_IO_CONFIG Configure,\r
	242	IN UINT8 UdpVersion,\r
	243	IN VOID *Context\r
	244	);\r
	245	\r
	246	/**\r
	247	Free the UDP_IO and all its related resources.\r
	248	\r
	249	If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
	250	\r
	251	The function cancels all sent datagrams and receive requests.\r
	252	\r
	253	@param[in] UdpIo The UDP_IO to free.\r
	254	\r
	255	@retval EFI_SUCCESS The UDP_IO is freed.\r
	256	@retval Others Failed to free UDP_IO.\r
	257	\r
	258	**/\r
	259	EFI_STATUS\r
	260	EFIAPI\r
	261	UdpIoFreeIo (\r
	262	IN UDP_IO *UdpIo\r
	263	);\r
	264	\r
	265	/**\r
	266	Cleans up the UDP_IO without freeing it. Call this function\r
	267	if you intend to later re-use the UDP_IO.\r
	268	\r
	269	If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
	270	\r
	271	This function releases all transmitted datagrams and receive requests and configures NULL for the UDP instance.\r
	272	\r
	273	@param[in] UdpIo The UDP_IO to clean up.\r
	274	\r
	275	**/\r
	276	VOID\r
	277	EFIAPI\r
	278	UdpIoCleanIo (\r
	279	IN UDP_IO *UdpIo\r
	280	);\r
	281	\r
	282	/**\r
	283	Send a packet through the UDP_IO.\r
	284	\r
	285	If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
	286	\r
	287	The packet will be wrapped in UDP_TX_TOKEN. Function Callback will be called\r
	288	when the packet is sent. The optional parameter EndPoint overrides the default\r
	289	address pair if specified.\r
	290	\r
	291	@param[in] UdpIo The UDP_IO to send the packet through.\r
	292	@param[in] Packet The packet to send.\r
	293	@param[in] EndPoint The local and remote access point. Override the\r
	294	default address pair set during configuration.\r
	295	@param[in] Gateway The gateway to use.\r
	296	@param[in] CallBack The function being called when packet is\r
	297	transmitted or failed.\r
	298	@param[in] Context The opaque parameter passed to CallBack.\r
	299	\r
	300	@retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the packet.\r
	301	@retval EFI_SUCCESS The packet is successfully delivered to UDP for\r
	302	transmission.\r
	303	\r
	304	**/\r
	305	EFI_STATUS\r
	306	EFIAPI\r
	307	UdpIoSendDatagram (\r
	308	IN UDP_IO *UdpIo,\r
	309	IN NET_BUF *Packet,\r
	310	IN UDP_END_POINT *EndPoint OPTIONAL,\r
	311	IN EFI_IP_ADDRESS *Gateway OPTIONAL,\r
	312	IN UDP_IO_CALLBACK CallBack,\r
	313	IN VOID *Context\r
	314	);\r
	315	\r
	316	/**\r
	317	Cancel a single sent datagram.\r
	318	\r
	319	@param[in] UdpIo The UDP_IO from which to cancel the packet\r
	320	@param[in] Packet The packet to cancel\r
	321	\r
	322	**/\r
	323	VOID\r
	324	EFIAPI\r
	325	UdpIoCancelSentDatagram (\r
	326	IN UDP_IO *UdpIo,\r
	327	IN NET_BUF *Packet\r
	328	);\r
	329	\r
	330	/**\r
	331	Issue a receive request to the UDP_IO.\r
	332	\r
	333	If Udp version is not UDP_IO_UDP4_VERSION or UDP_IO_UDP6_VERSION, then ASSERT().\r
	334	\r
	335	This function is called when upper-layer needs packet from UDP for processing.\r
	336	Only one receive request is acceptable at a time. Therefore, one common usage model is\r
	337	to invoke this function inside its Callback function when the former packet\r
	338	is processed.\r
	339	\r
	340	@param[in] UdpIo The UDP_IO to receive the packet from.\r
	341	@param[in] CallBack The call back function to execute when the packet\r
	342	is received.\r
	343	@param[in] Context The opaque context passed to Callback.\r
	344	@param[in] HeadLen The length of the upper-layer's protocol header.\r
	345	\r
	346	@retval EFI_ALREADY_STARTED There is already a pending receive request. Only\r
	347	one receive request is supported at a time.\r
	348	@retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources.\r
	349	@retval EFI_SUCCESS The receive request was issued successfully.\r
	350	@retval EFI_UNSUPPORTED The UDP version in UDP_IO is not supported.\r
	351	\r
	352	**/\r
	353	EFI_STATUS\r
	354	EFIAPI\r
	355	UdpIoRecvDatagram (\r
	356	IN UDP_IO *UdpIo,\r
	357	IN UDP_IO_CALLBACK CallBack,\r
	358	IN VOID *Context,\r
	359	IN UINT32 HeadLen\r
	360	);\r
	361	\r
	362	#endif\r
	363	\r