2 This library is used to share code between UEFI network stack modules.
3 It provides the helper routines to access UDP service. It is used by both DHCP and MTFTP.
5 Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
6 This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at<BR>
9 http://opensource.org/licenses/bsd-license.php
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
19 #include <Protocol/Udp4.h>
20 #include <Protocol/Udp6.h>
22 #include <Library/NetLib.h>
24 typedef struct _UDP_IO UDP_IO
;
27 /// Signatures used by UdpIo Library.
30 #define UDP_IO_RX_SIGNATURE SIGNATURE_32 ('U', 'D', 'P', 'R')
31 #define UDP_IO_TX_SIGNATURE SIGNATURE_32 ('U', 'D', 'P', 'T')
32 #define UDP_IO_SIGNATURE SIGNATURE_32 ('U', 'D', 'P', 'I')
34 #define UDP_IO_UDP4_VERSION 4
35 #define UDP_IO_UDP6_VERSION 6
38 /// The UDP address pair.
41 EFI_IP_ADDRESS LocalAddr
;
43 EFI_IP_ADDRESS RemoteAddr
;
48 Prototype called when receiving or sending packets to or from a UDP point.
50 This prototype is used by both receive and sending when calling
51 UdpIoRecvDatagram() or UdpIoSendDatagram(). When receiving, Netbuf is allocated by the
52 UDP access point and released by the user. When sending, the user allocates the the NetBuf,
53 which is then provided to the callback as a reference.
55 @param[in] Packet The packet received or sent.
56 @param[in] EndPoint The UDP address pair corresponds to the UDP IO.
57 @param[in] IoStatus The packet receiving or sending status.
58 @param[in] Context The user-defined data when calling UdpIoRecvDatagram() or
63 (EFIAPI
*UDP_IO_CALLBACK
) (
65 IN UDP_END_POINT
*EndPoint
,
66 IN EFI_STATUS IoStatus
,
71 /// This structure is used internally by the UdpIo Library.
73 /// Each receive request is wrapped in an UDP_RX_TOKEN. Upon completion,
74 /// the CallBack will be called. Only one receive request is sent to UDP at a
75 /// time. HeadLen gives the length of the application's header. UDP_IO will
76 /// make the application's header continuous before delivering up.
79 EFI_UDP4_COMPLETION_TOKEN Udp4
;
80 EFI_UDP6_COMPLETION_TOKEN Udp6
;
81 } UDP_COMPLETION_TOKEN
;
87 UDP_IO_CALLBACK CallBack
;
91 UDP_COMPLETION_TOKEN Token
;
97 /// This structure is used internally by UdpIo Library.
99 /// Each transmit request is wrapped in an UDP_TX_TOKEN. Upon completion,
100 /// the CallBack will be called. There can be several transmit requests. All transmit
101 /// requests are linked in a list.
105 EFI_UDP4_SESSION_DATA Udp4
;
106 EFI_UDP6_SESSION_DATA Udp6
;
110 EFI_UDP4_TRANSMIT_DATA Udp4
;
111 EFI_UDP6_TRANSMIT_DATA Udp6
;
118 UDP_IO_CALLBACK CallBack
;
121 EFI_IPv4_ADDRESS Gateway
;
122 UDP_SESSION_DATA Session
;
123 UDP_COMPLETION_TOKEN Token
;
124 UDP_TRANSMIT_DATA Data
;
128 /// Type defined as UDP_IO.
130 /// This data structure wraps the UDP instance and configuration.
131 /// UdpIo Library uses this structure for all Udp4 or Udp6 operations.
140 // Handle used to create/destroy UDP child
142 EFI_HANDLE Controller
;
144 EFI_HANDLE UdpHandle
;
146 EFI_SIMPLE_NETWORK_MODE SnpMode
;
148 LIST_ENTRY SentDatagram
; ///< A list of UDP_TX_TOKEN.
149 UDP_RX_TOKEN
*RecvRequest
;
152 EFI_UDP4_PROTOCOL
*Udp4
;
153 EFI_UDP6_PROTOCOL
*Udp6
;
157 EFI_UDP4_CONFIG_DATA Udp4
;
158 EFI_UDP6_CONFIG_DATA Udp6
;
163 The prototype called when UdpIo Library configures a UDP instance.
165 The prototype is set and called when creating a UDP_IO in UdpIoCreatePort().
167 @param[in] UdpIo The UDP_IO to configure.
168 @param[in] Context The user-defined data when calling UdpIoCreatePort().
170 @retval EFI_SUCCESS The configuration succeeded.
171 @retval Others The UDP_IO fails to configure indicating
172 UdpIoCreatePort() should fail.
176 (EFIAPI
*UDP_IO_CONFIG
) (
182 The select function to decide whether to cancel the UDP_TX_TOKEN.
184 @param[in] Token The UDP_TX_TOKEN to decide whether to cancel.
185 @param[in] Context User-defined data in UdpIoCancelDgrams().
187 @retval TRUE Cancel the UDP_TX_TOKEN.
188 @retval FALSE Do not cancel this UDP_TX_TOKEN.
193 (EFIAPI
*UDP_IO_TO_CANCEL
) (
194 IN UDP_TX_TOKEN
*Token
,
199 Cancel all the sent datagram that pass the selection criteria of ToCancel.
200 If ToCancel is NULL, all the datagrams are cancelled.
202 @param[in] UdpIo The UDP_IO to cancel packet.
203 @param[in] IoStatus The IoStatus to return to the packet owners.
204 @param[in] ToCancel The select funtion to test whether to cancel this
206 @param[in] Context The opaque parameter to the ToCancel.
213 IN EFI_STATUS IoStatus
,
214 IN UDP_IO_TO_CANCEL ToCancel
, OPTIONAL
219 Creates a UDP_IO to access the UDP service. It creates and configures
222 It locates the UDP service binding prototype on the Controller parameter
223 uses the UDP service binding prototype to create a UDP child (also known as
224 a UDP instance) configures the UDP child by calling Configure function prototype.
225 Any failures in creating or configuring the UDP child return NULL for failure.
227 @param[in] Controller The controller that has the UDP service binding.
229 @param[in] ImageHandle The image handle for the driver.
230 @param[in] Configure The function to configure the created UDP child.
231 @param[in] UdpVersion The UDP protocol version, UDP4 or UDP6.
232 @param[in] Context The opaque parameter for the Configure funtion.
234 @return The newly-created UDP_IO, or NULL if failed.
240 IN EFI_HANDLE Controller
,
241 IN EFI_HANDLE ImageHandle
,
242 IN UDP_IO_CONFIG Configure
,
248 Free the UDP_IO and all its related resources.
250 The function cancels all sent datagrams and receive requests.
252 @param[in] UdpIo The UDP_IO to free.
254 @retval EFI_SUCCESS The UDP_IO is freed.
264 Cleans up the UDP_IO without freeing it. Call this function
265 if you intend to later re-use the UDP_IO.
267 This function releases all transmitted datagrams and receive requests and configures NULL for the UDP instance.
269 @param[in] UdpIo The UDP_IO to clean up.
279 Send a packet through the UDP_IO.
281 The packet will be wrapped in UDP_TX_TOKEN. Function Callback will be called
282 when the packet is sent. The optional parameter EndPoint overrides the default
283 address pair if specified.
285 @param[in] UdpIo The UDP_IO to send the packet through.
286 @param[in] Packet The packet to send.
287 @param[in] EndPoint The local and remote access point. Override the
288 default address pair set during configuration.
289 @param[in] Gateway The gateway to use.
290 @param[in] CallBack The function being called when packet is
291 transmitted or failed.
292 @param[in] Context The opaque parameter passed to CallBack.
294 @retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the packet.
295 @retval EFI_SUCCESS The packet is successfully delivered to UDP for
304 IN UDP_END_POINT
*EndPoint OPTIONAL
,
305 IN EFI_IP_ADDRESS
*Gateway OPTIONAL
,
306 IN UDP_IO_CALLBACK CallBack
,
311 Cancel a single sent datagram.
313 @param[in] UdpIo The UDP_IO from which to cancel the packet
314 @param[in] Packet The packet to cancel
319 UdpIoCancelSentDatagram (
325 Issue a receive request to the UDP_IO.
327 This function is called when upper-layer needs packet from UDP for processing.
328 Only one receive request is acceptable at a time. Therefore, one common usage model is
329 to invoke this function inside its Callback function when the former packet
332 @param[in] UdpIo The UDP_IO to receive the packet from.
333 @param[in] CallBack The call back function to execute when the packet
335 @param[in] Context The opaque context passed to Callback.
336 @param[in] HeadLen The length of the upper-layer's protocol header.
338 @retval EFI_ALREADY_STARTED There is already a pending receive request. Only
339 one receive request is supported at a time.
340 @retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources.
341 @retval EFI_SUCCESS The receive request was issued successfully.
342 @retval EFI_UNSUPPORTED The UDP version in UDP_IO is not supported.
349 IN UDP_IO_CALLBACK CallBack
,