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d1f95000 | 1 | /** @file\r |
2 | EFI_DHCP4_PROTOCOL as defined in UEFI 2.0.\r | |
3 | EFI_DHCP4_SERVICE_BINDING_PROTOCOL as defined in UEFI 2.0.\r | |
305a1279 | 4 | These protocols are used to collect configuration information for the EFI IPv4 Protocol\r |
d1f95000 | 5 | drivers and to provide DHCPv4 server and PXE boot server discovery services.\r |
6 | \r | |
9095d37b | 7 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r |
9344f092 | 8 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
d1f95000 | 9 | \r |
9095d37b | 10 | @par Revision Reference:\r |
af2dc6a7 | 11 | This Protocol was introduced in UEFI Specification 2.0.\r |
5899caf0 | 12 | \r |
d1f95000 | 13 | **/\r |
14 | \r | |
15 | #ifndef __EFI_DHCP4_PROTOCOL_H__\r | |
16 | #define __EFI_DHCP4_PROTOCOL_H__\r | |
17 | \r | |
18 | #define EFI_DHCP4_PROTOCOL_GUID \\r | |
19 | { \\r | |
20 | 0x8a219718, 0x4ef5, 0x4761, {0x91, 0xc8, 0xc0, 0xf0, 0x4b, 0xda, 0x9e, 0x56 } \\r | |
21 | }\r | |
22 | \r | |
23 | #define EFI_DHCP4_SERVICE_BINDING_PROTOCOL_GUID \\r | |
24 | { \\r | |
25 | 0x9d9a39d8, 0xbd42, 0x4a73, {0xa4, 0xd5, 0x8e, 0xe9, 0x4b, 0xe1, 0x13, 0x80 } \\r | |
26 | }\r | |
305a1279 | 27 | \r |
d1f95000 | 28 | typedef struct _EFI_DHCP4_PROTOCOL EFI_DHCP4_PROTOCOL;\r |
29 | \r | |
30 | \r | |
31 | #pragma pack(1)\r | |
32 | typedef struct {\r | |
74fec708 LG |
33 | ///\r |
34 | /// DHCP option code.\r | |
35 | ///\r | |
d1f95000 | 36 | UINT8 OpCode;\r |
74fec708 LG |
37 | ///\r |
38 | /// Length of the DHCP option data. Not present if OpCode is 0 or 255.\r | |
39 | ///\r | |
d1f95000 | 40 | UINT8 Length;\r |
74fec708 LG |
41 | ///\r |
42 | /// Start of the DHCP option data. Not present if OpCode is 0 or 255 or if Length is zero.\r | |
43 | ///\r | |
d1f95000 | 44 | UINT8 Data[1];\r |
45 | } EFI_DHCP4_PACKET_OPTION;\r | |
46 | #pragma pack()\r | |
47 | \r | |
48 | \r | |
49 | #pragma pack(1)\r | |
74fec708 LG |
50 | ///\r |
51 | /// EFI_DHCP4_PACKET defines the format of DHCPv4 packets. See RFC 2131 for more information.\r | |
52 | ///\r | |
d1f95000 | 53 | typedef struct {\r |
74fec708 LG |
54 | UINT8 OpCode;\r |
55 | UINT8 HwType;\r | |
56 | UINT8 HwAddrLen;\r | |
57 | UINT8 Hops;\r | |
58 | UINT32 Xid;\r | |
59 | UINT16 Seconds;\r | |
60 | UINT16 Reserved;\r | |
af2dc6a7 | 61 | EFI_IPv4_ADDRESS ClientAddr; ///< Client IP address from client.\r |
62 | EFI_IPv4_ADDRESS YourAddr; ///< Client IP address from server.\r | |
63 | EFI_IPv4_ADDRESS ServerAddr; ///< IP address of next server in bootstrap.\r | |
64 | EFI_IPv4_ADDRESS GatewayAddr; ///< Relay agent IP address.\r | |
65 | UINT8 ClientHwAddr[16]; ///< Client hardware address.\r | |
74fec708 LG |
66 | CHAR8 ServerName[64];\r |
67 | CHAR8 BootFileName[128];\r | |
d1f95000 | 68 | }EFI_DHCP4_HEADER;\r |
69 | #pragma pack()\r | |
70 | \r | |
71 | \r | |
72 | #pragma pack(1)\r | |
73 | typedef struct {\r | |
74fec708 LG |
74 | ///\r |
75 | /// Size of the EFI_DHCP4_PACKET buffer.\r | |
76 | ///\r | |
d1f95000 | 77 | UINT32 Size;\r |
74fec708 | 78 | ///\r |
9095d37b | 79 | /// Length of the EFI_DHCP4_PACKET from the first byte of the Header field\r |
74fec708 LG |
80 | /// to the last byte of the Option[] field.\r |
81 | ///\r | |
d1f95000 | 82 | UINT32 Length;\r |
83 | \r | |
84 | struct {\r | |
74fec708 LG |
85 | ///\r |
86 | /// DHCP packet header.\r | |
87 | ///\r | |
d1f95000 | 88 | EFI_DHCP4_HEADER Header;\r |
74fec708 LG |
89 | ///\r |
90 | /// DHCP magik cookie in network byte order.\r | |
91 | ///\r | |
d1f95000 | 92 | UINT32 Magik;\r |
74fec708 LG |
93 | ///\r |
94 | /// Start of the DHCP packed option data.\r | |
95 | ///\r | |
d1f95000 | 96 | UINT8 Option[1];\r |
97 | } Dhcp4;\r | |
98 | } EFI_DHCP4_PACKET;\r | |
99 | #pragma pack()\r | |
100 | \r | |
101 | \r | |
102 | typedef enum {\r | |
74fec708 | 103 | ///\r |
af2dc6a7 | 104 | /// The EFI DHCPv4 Protocol driver is stopped.\r |
74fec708 | 105 | ///\r |
d1f95000 | 106 | Dhcp4Stopped = 0x0,\r |
74fec708 | 107 | ///\r |
af2dc6a7 | 108 | /// The EFI DHCPv4 Protocol driver is inactive.\r |
74fec708 | 109 | ///\r |
d1f95000 | 110 | Dhcp4Init = 0x1,\r |
74fec708 LG |
111 | ///\r |
112 | /// The EFI DHCPv4 Protocol driver is collecting DHCP offer packets from DHCP servers.\r | |
113 | ///\r | |
d1f95000 | 114 | Dhcp4Selecting = 0x2,\r |
74fec708 LG |
115 | ///\r |
116 | /// The EFI DHCPv4 Protocol driver has sent the request to the DHCP server and is waiting for a response.\r | |
117 | ///\r | |
d1f95000 | 118 | Dhcp4Requesting = 0x3,\r |
74fec708 LG |
119 | ///\r |
120 | /// The DHCP configuration has completed.\r | |
121 | ///\r | |
d1f95000 | 122 | Dhcp4Bound = 0x4,\r |
74fec708 LG |
123 | ///\r |
124 | /// The DHCP configuration is being renewed and another request has\r | |
125 | /// been sent out, but it has not received a response from the server yet.\r | |
126 | ///\r | |
d1f95000 | 127 | Dhcp4Renewing = 0x5,\r |
74fec708 LG |
128 | ///\r |
129 | /// The DHCP configuration has timed out and the EFI DHCPv4\r | |
130 | /// Protocol driver is trying to extend the lease time.\r | |
131 | ///\r | |
d1f95000 | 132 | Dhcp4Rebinding = 0x6,\r |
74fec708 | 133 | ///\r |
af2dc6a7 | 134 | /// The EFI DHCPv4 Protocol driver was initialized with a previously\r |
74fec708 LG |
135 | /// allocated or known IP address.\r |
136 | ///\r | |
d1f95000 | 137 | Dhcp4InitReboot = 0x7,\r |
74fec708 LG |
138 | ///\r |
139 | /// The EFI DHCPv4 Protocol driver is seeking to reuse the previously\r | |
140 | /// allocated IP address by sending a request to the DHCP server.\r | |
141 | ///\r | |
d1f95000 | 142 | Dhcp4Rebooting = 0x8\r |
143 | } EFI_DHCP4_STATE;\r | |
144 | \r | |
145 | \r | |
146 | typedef enum{\r | |
74fec708 | 147 | ///\r |
0acd6015 | 148 | /// The packet to start the configuration sequence is about to be sent.\r |
74fec708 | 149 | ///\r |
d1f95000 | 150 | Dhcp4SendDiscover = 0x01,\r |
74fec708 | 151 | ///\r |
0acd6015 | 152 | /// A reply packet was just received.\r |
74fec708 | 153 | ///\r |
d1f95000 | 154 | Dhcp4RcvdOffer = 0x02,\r |
74fec708 LG |
155 | ///\r |
156 | /// It is time for Dhcp4Callback to select an offer.\r | |
157 | ///\r | |
d1f95000 | 158 | Dhcp4SelectOffer = 0x03,\r |
74fec708 LG |
159 | ///\r |
160 | /// A request packet is about to be sent.\r | |
161 | ///\r | |
d1f95000 | 162 | Dhcp4SendRequest = 0x04,\r |
74fec708 LG |
163 | ///\r |
164 | /// A DHCPACK packet was received and will be passed to Dhcp4Callback.\r | |
165 | ///\r | |
d1f95000 | 166 | Dhcp4RcvdAck = 0x05,\r |
74fec708 LG |
167 | ///\r |
168 | /// A DHCPNAK packet was received and will be passed to Dhcp4Callback.\r | |
169 | ///\r | |
d1f95000 | 170 | Dhcp4RcvdNak = 0x06,\r |
74fec708 LG |
171 | ///\r |
172 | /// A decline packet is about to be sent.\r | |
173 | ///\r | |
d1f95000 | 174 | Dhcp4SendDecline = 0x07,\r |
74fec708 LG |
175 | ///\r |
176 | /// The DHCP configuration process has completed. No packet is associated with this event.\r | |
177 | ///\r | |
d1f95000 | 178 | Dhcp4BoundCompleted = 0x08,\r |
74fec708 | 179 | ///\r |
9095d37b | 180 | /// It is time to enter the Dhcp4Renewing state and to contact the server\r |
74fec708 LG |
181 | /// that originally issued the network address. No packet is associated with this event.\r |
182 | ///\r | |
d1f95000 | 183 | Dhcp4EnterRenewing = 0x09,\r |
74fec708 | 184 | ///\r |
9095d37b | 185 | /// It is time to enter the Dhcp4Rebinding state and to contact any server.\r |
74fec708 LG |
186 | /// No packet is associated with this event.\r |
187 | ///\r | |
d1f95000 | 188 | Dhcp4EnterRebinding = 0x0a,\r |
74fec708 | 189 | ///\r |
9095d37b LG |
190 | /// The configured IP address was lost either because the lease has expired,\r |
191 | /// the user released the configuration, or a DHCPNAK packet was received in\r | |
74fec708 LG |
192 | /// the Dhcp4Renewing or Dhcp4Rebinding state. No packet is associated with this event.\r |
193 | ///\r | |
d1f95000 | 194 | Dhcp4AddressLost = 0x0b,\r |
74fec708 | 195 | ///\r |
9095d37b LG |
196 | /// The DHCP process failed because a DHCPNAK packet was received or the user\r |
197 | /// aborted the DHCP process at a time when the configuration was not available yet.\r | |
74fec708 LG |
198 | /// No packet is associated with this event.\r |
199 | ///\r | |
d1f95000 | 200 | Dhcp4Fail = 0x0c\r |
201 | } EFI_DHCP4_EVENT;\r | |
202 | \r | |
305a1279 | 203 | /**\r |
faac3f0c | 204 | Callback routine.\r |
9095d37b | 205 | \r |
faac3f0c | 206 | EFI_DHCP4_CALLBACK is provided by the consumer of the EFI DHCPv4 Protocol driver\r |
207 | to intercept events that occurred in the configuration process. This structure\r | |
208 | provides advanced control of each state transition of the DHCP process. The\r | |
209 | returned status code determines the behavior of the EFI DHCPv4 Protocol driver.\r | |
210 | There are three possible returned values, which are described in the following\r | |
211 | table.\r | |
305a1279 | 212 | \r |
af2dc6a7 | 213 | @param This The pointer to the EFI DHCPv4 Protocol instance that is used to\r |
305a1279 | 214 | configure this callback function.\r |
af2dc6a7 | 215 | @param Context The pointer to the context that is initialized by\r |
305a1279 | 216 | EFI_DHCP4_PROTOCOL.Configure().\r |
d1f95000 | 217 | @param CurrentState The current operational state of the EFI DHCPv4 Protocol\r |
305a1279 | 218 | driver.\r |
d1f95000 | 219 | @param Dhcp4Event The event that occurs in the current state, which usually means a\r |
305a1279 | 220 | state transition.\r |
221 | @param Packet The DHCP packet that is going to be sent or already received.\r | |
d1f95000 | 222 | @param NewPacket The packet that is used to replace the above Packet.\r |
305a1279 | 223 | \r |
d1f95000 | 224 | @retval EFI_SUCCESS Tells the EFI DHCPv4 Protocol driver to continue the DHCP process.\r |
0acd6015 | 225 | When it is in the Dhcp4Selecting state, it tells the EFI DHCPv4 Protocol\r |
226 | driver to stop collecting additional packets. The driver will exit\r | |
227 | the Dhcp4Selecting state and enter the Dhcp4Requesting state.\r | |
305a1279 | 228 | @retval EFI_NOT_READY Only used in the Dhcp4Selecting state. The EFI DHCPv4 Protocol\r |
0acd6015 | 229 | driver will continue to wait for more packets until the retry\r |
305a1279 | 230 | timeout expires.\r |
d1f95000 | 231 | @retval EFI_ABORTED Tells the EFI DHCPv4 Protocol driver to abort the current process and\r |
305a1279 | 232 | return to the Dhcp4Init or Dhcp4InitReboot state.\r |
233 | \r | |
d1f95000 | 234 | **/\r |
305a1279 | 235 | typedef\r |
236 | EFI_STATUS\r | |
8b13229b | 237 | (EFIAPI *EFI_DHCP4_CALLBACK)(\r |
d1f95000 | 238 | IN EFI_DHCP4_PROTOCOL *This,\r |
239 | IN VOID *Context,\r | |
240 | IN EFI_DHCP4_STATE CurrentState,\r | |
241 | IN EFI_DHCP4_EVENT Dhcp4Event,\r | |
305a1279 | 242 | IN EFI_DHCP4_PACKET *Packet OPTIONAL,\r |
d1f95000 | 243 | OUT EFI_DHCP4_PACKET **NewPacket OPTIONAL\r |
244 | );\r | |
245 | \r | |
d1f95000 | 246 | typedef struct {\r |
74fec708 | 247 | ///\r |
af2dc6a7 | 248 | /// The number of times to try sending a packet during the Dhcp4SendDiscover\r |
0acd6015 | 249 | /// event and waiting for a response during the Dhcp4RcvdOffer event.\r |
74fec708 LG |
250 | /// Set to zero to use the default try counts and timeout values.\r |
251 | ///\r | |
305a1279 | 252 | UINT32 DiscoverTryCount;\r |
74fec708 | 253 | ///\r |
9095d37b LG |
254 | /// The maximum amount of time (in seconds) to wait for returned packets in each\r |
255 | /// of the retries. Timeout values of zero will default to a timeout value\r | |
74fec708 LG |
256 | /// of one second. Set to NULL to use default timeout values.\r |
257 | ///\r | |
d1f95000 | 258 | UINT32 *DiscoverTimeout;\r |
74fec708 | 259 | ///\r |
af2dc6a7 | 260 | /// The number of times to try sending a packet during the Dhcp4SendRequest event\r |
0acd6015 | 261 | /// and waiting for a response during the Dhcp4RcvdAck event before accepting\r |
262 | /// failure. Set to zero to use the default try counts and timeout values.\r | |
74fec708 | 263 | ///\r |
d1f95000 | 264 | UINT32 RequestTryCount;\r |
74fec708 | 265 | ///\r |
9095d37b LG |
266 | /// The maximum amount of time (in seconds) to wait for return packets in each of the retries.\r |
267 | /// Timeout values of zero will default to a timeout value of one second.\r | |
74fec708 LG |
268 | /// Set to NULL to use default timeout values.\r |
269 | ///\r | |
d1f95000 | 270 | UINT32 *RequestTimeout;\r |
74fec708 | 271 | ///\r |
0acd6015 | 272 | /// For a DHCPDISCOVER, setting this parameter to the previously allocated IP\r |
9095d37b | 273 | /// address will cause the EFI DHCPv4 Protocol driver to enter the Dhcp4InitReboot state.\r |
0acd6015 | 274 | /// And set this field to 0.0.0.0 to enter the Dhcp4Init state.\r |
275 | /// For a DHCPINFORM this parameter should be set to the client network address\r | |
276 | /// which was assigned to the client during a DHCPDISCOVER.\r | |
74fec708 | 277 | ///\r |
d1f95000 | 278 | EFI_IPv4_ADDRESS ClientAddress;\r |
74fec708 | 279 | ///\r |
9095d37b | 280 | /// The callback function to intercept various events that occurred in\r |
74fec708 LG |
281 | /// the DHCP configuration process. Set to NULL to ignore all those events.\r |
282 | ///\r | |
d1f95000 | 283 | EFI_DHCP4_CALLBACK Dhcp4Callback;\r |
74fec708 | 284 | ///\r |
af2dc6a7 | 285 | /// The pointer to the context that will be passed to Dhcp4Callback when it is called.\r |
74fec708 LG |
286 | ///\r |
287 | VOID *CallbackContext;\r | |
288 | ///\r | |
289 | /// Number of DHCP options in the OptionList.\r | |
290 | ///\r | |
d1f95000 | 291 | UINT32 OptionCount;\r |
74fec708 | 292 | ///\r |
0acd6015 | 293 | /// List of DHCP options to be included in every packet that is sent during the\r |
294 | /// Dhcp4SendDiscover event. Pad options are appended automatically by DHCP driver\r | |
295 | /// in outgoing DHCP packets. If OptionList itself contains pad option, they are\r | |
296 | /// ignored by the driver. OptionList can be freed after EFI_DHCP4_PROTOCOL.Configure()\r | |
297 | /// returns. Ignored if OptionCount is zero.\r | |
74fec708 | 298 | ///\r |
d1f95000 | 299 | EFI_DHCP4_PACKET_OPTION **OptionList;\r |
300 | } EFI_DHCP4_CONFIG_DATA;\r | |
301 | \r | |
302 | \r | |
303 | typedef struct {\r | |
74fec708 | 304 | ///\r |
9095d37b | 305 | /// The EFI DHCPv4 Protocol driver operating state.\r |
74fec708 | 306 | ///\r |
d1f95000 | 307 | EFI_DHCP4_STATE State;\r |
74fec708 LG |
308 | ///\r |
309 | /// The configuration data of the current EFI DHCPv4 Protocol driver instance.\r | |
310 | ///\r | |
d1f95000 | 311 | EFI_DHCP4_CONFIG_DATA ConfigData;\r |
74fec708 LG |
312 | ///\r |
313 | /// The client IP address that was acquired from the DHCP server. If it is zero,\r | |
314 | /// the DHCP acquisition has not completed yet and the following fields in this structure are undefined.\r | |
315 | ///\r | |
d1f95000 | 316 | EFI_IPv4_ADDRESS ClientAddress;\r |
74fec708 LG |
317 | ///\r |
318 | /// The local hardware address.\r | |
319 | ///\r | |
d1f95000 | 320 | EFI_MAC_ADDRESS ClientMacAddress;\r |
74fec708 LG |
321 | ///\r |
322 | /// The server IP address that is providing the DHCP service to this client.\r | |
323 | ///\r | |
d1f95000 | 324 | EFI_IPv4_ADDRESS ServerAddress;\r |
74fec708 | 325 | ///\r |
9095d37b | 326 | /// The router IP address that was acquired from the DHCP server.\r |
74fec708 LG |
327 | /// May be zero if the server does not offer this address.\r |
328 | ///\r | |
d1f95000 | 329 | EFI_IPv4_ADDRESS RouterAddress;\r |
74fec708 LG |
330 | ///\r |
331 | /// The subnet mask of the connected network that was acquired from the DHCP server.\r | |
332 | ///\r | |
d1f95000 | 333 | EFI_IPv4_ADDRESS SubnetMask;\r |
74fec708 | 334 | ///\r |
9095d37b LG |
335 | /// The lease time (in 1-second units) of the configured IP address.\r |
336 | /// The value 0xFFFFFFFF means that the lease time is infinite.\r | |
74fec708 LG |
337 | /// A default lease of 7 days is used if the DHCP server does not provide a value.\r |
338 | ///\r | |
d1f95000 | 339 | UINT32 LeaseTime;\r |
74fec708 LG |
340 | ///\r |
341 | /// The cached latest DHCPACK or DHCPNAK or BOOTP REPLY packet. May be NULL if no packet is cached.\r | |
342 | ///\r | |
d1f95000 | 343 | EFI_DHCP4_PACKET *ReplyPacket;\r |
344 | } EFI_DHCP4_MODE_DATA;\r | |
345 | \r | |
346 | \r | |
347 | typedef struct {\r | |
74fec708 LG |
348 | ///\r |
349 | /// Alternate listening address. It can be a unicast, multicast, or broadcast address.\r | |
350 | ///\r | |
d1f95000 | 351 | EFI_IPv4_ADDRESS ListenAddress;\r |
74fec708 | 352 | ///\r |
9095d37b | 353 | /// The subnet mask of above listening unicast/broadcast IP address.\r |
74fec708 LG |
354 | /// Ignored if ListenAddress is a multicast address.\r |
355 | ///\r | |
d1f95000 | 356 | EFI_IPv4_ADDRESS SubnetMask;\r |
74fec708 | 357 | ///\r |
9095d37b | 358 | /// Alternate station source (or listening) port number.\r |
74fec708 LG |
359 | /// If zero, then the default station port number (68) will be used.\r |
360 | ///\r | |
d1f95000 | 361 | UINT16 ListenPort;\r |
362 | } EFI_DHCP4_LISTEN_POINT;\r | |
363 | \r | |
364 | \r | |
365 | typedef struct {\r | |
74fec708 LG |
366 | ///\r |
367 | /// The completion status of transmitting and receiving.\r | |
368 | ///\r | |
305a1279 | 369 | EFI_STATUS Status;\r |
74fec708 | 370 | ///\r |
9095d37b | 371 | /// If not NULL, the event that will be signaled when the collection process\r |
74fec708 LG |
372 | /// completes. If NULL, this function will busy-wait until the collection process competes.\r |
373 | ///\r | |
305a1279 | 374 | EFI_EVENT CompletionEvent;\r |
74fec708 | 375 | ///\r |
af2dc6a7 | 376 | /// The pointer to the server IP address. This address may be a unicast, multicast, or broadcast address.\r |
74fec708 | 377 | ///\r |
305a1279 | 378 | EFI_IPv4_ADDRESS RemoteAddress;\r |
74fec708 | 379 | ///\r |
af2dc6a7 | 380 | /// The server listening port number. If zero, the default server listening port number (67) will be used.\r |
74fec708 | 381 | ///\r |
305a1279 | 382 | UINT16 RemotePort;\r |
74fec708 | 383 | ///\r |
af2dc6a7 | 384 | /// The pointer to the gateway address to override the existing setting.\r |
74fec708 | 385 | ///\r |
305a1279 | 386 | EFI_IPv4_ADDRESS GatewayAddress;\r |
74fec708 LG |
387 | ///\r |
388 | /// The number of entries in ListenPoints. If zero, the default station address and port number 68 are used.\r | |
389 | ///\r | |
305a1279 | 390 | UINT32 ListenPointCount;\r |
74fec708 | 391 | ///\r |
9095d37b | 392 | /// An array of station address and port number pairs that are used as receiving filters.\r |
74fec708 LG |
393 | /// The first entry is also used as the source address and source port of the outgoing packet.\r |
394 | ///\r | |
305a1279 | 395 | EFI_DHCP4_LISTEN_POINT *ListenPoints;\r |
74fec708 | 396 | ///\r |
af2dc6a7 | 397 | /// The number of seconds to collect responses. Zero is invalid.\r |
74fec708 | 398 | ///\r |
305a1279 | 399 | UINT32 TimeoutValue;\r |
74fec708 | 400 | ///\r |
af2dc6a7 | 401 | /// The pointer to the packet to be transmitted.\r |
74fec708 | 402 | ///\r |
305a1279 | 403 | EFI_DHCP4_PACKET *Packet;\r |
74fec708 LG |
404 | ///\r |
405 | /// Number of received packets.\r | |
406 | ///\r | |
305a1279 | 407 | UINT32 ResponseCount;\r |
74fec708 | 408 | ///\r |
af2dc6a7 | 409 | /// The pointer to the allocated list of received packets.\r |
74fec708 | 410 | ///\r |
305a1279 | 411 | EFI_DHCP4_PACKET *ResponseList;\r |
d1f95000 | 412 | } EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN;\r |
413 | \r | |
414 | \r | |
415 | /**\r | |
416 | Returns the current operating mode and cached data packet for the EFI DHCPv4 Protocol driver.\r | |
9095d37b | 417 | \r |
faac3f0c | 418 | The GetModeData() function returns the current operating mode and cached data\r |
419 | packet for the EFI DHCPv4 Protocol driver.\r | |
d1f95000 | 420 | \r |
af2dc6a7 | 421 | @param This The pointer to the EFI_DHCP4_PROTOCOL instance.\r |
422 | @param Dhcp4ModeData The pointer to storage for the EFI_DHCP4_MODE_DATA structure.\r | |
d1f95000 | 423 | \r |
424 | @retval EFI_SUCCESS The mode data was returned.\r | |
425 | @retval EFI_INVALID_PARAMETER This is NULL.\r | |
426 | \r | |
427 | **/\r | |
305a1279 | 428 | typedef\r |
429 | EFI_STATUS\r | |
8b13229b | 430 | (EFIAPI *EFI_DHCP4_GET_MODE_DATA)(\r |
d1f95000 | 431 | IN EFI_DHCP4_PROTOCOL *This,\r |
432 | OUT EFI_DHCP4_MODE_DATA *Dhcp4ModeData\r | |
ed66e1bc | 433 | );\r |
d1f95000 | 434 | \r |
435 | /**\r | |
436 | Initializes, changes, or resets the operational settings for the EFI DHCPv4 Protocol driver.\r | |
437 | \r | |
faac3f0c | 438 | The Configure() function is used to initialize, change, or reset the operational\r |
439 | settings of the EFI DHCPv4 Protocol driver for the communication device on which\r | |
440 | the EFI DHCPv4 Service Binding Protocol is installed. This function can be\r | |
441 | successfully called only if both of the following are true:\r | |
442 | * This instance of the EFI DHCPv4 Protocol driver is in the Dhcp4Stopped, Dhcp4Init,\r | |
443 | Dhcp4InitReboot, or Dhcp4Bound states.\r | |
444 | * No other EFI DHCPv4 Protocol driver instance that is controlled by this EFI\r | |
445 | DHCPv4 Service Binding Protocol driver instance has configured this EFI DHCPv4\r | |
446 | Protocol driver.\r | |
447 | When this driver is in the Dhcp4Stopped state, it can transfer into one of the\r | |
448 | following two possible initial states:\r | |
449 | * Dhcp4Init\r | |
af2dc6a7 | 450 | * Dhcp4InitReboot.\r |
faac3f0c | 451 | The driver can transfer into these states by calling Configure() with a non-NULL\r |
452 | Dhcp4CfgData. The driver will transfer into the appropriate state based on the\r | |
453 | supplied client network address in the ClientAddress parameter and DHCP options\r | |
454 | in the OptionList parameter as described in RFC 2131.\r | |
455 | When Configure() is called successfully while Dhcp4CfgData is set to NULL, the\r | |
456 | default configuring data will be reset in the EFI DHCPv4 Protocol driver and\r | |
457 | the state of the EFI DHCPv4 Protocol driver will not be changed. If one instance\r | |
458 | wants to make it possible for another instance to configure the EFI DHCPv4 Protocol\r | |
459 | driver, it must call this function with Dhcp4CfgData set to NULL.\r | |
460 | \r | |
af2dc6a7 | 461 | @param This The pointer to the EFI_DHCP4_PROTOCOL instance.\r |
462 | @param Dhcp4CfgData The pointer to the EFI_DHCP4_CONFIG_DATA.\r | |
d1f95000 | 463 | \r |
464 | @retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the Dhcp4Init or\r | |
465 | Dhcp4InitReboot state, if the original state of this driver\r | |
0acd6015 | 466 | was Dhcp4Stopped, Dhcp4Init,Dhcp4InitReboot, or Dhcp4Bound\r |
467 | and the value of Dhcp4CfgData was not NULL.\r | |
468 | Otherwise, the state was left unchanged.\r | |
d1f95000 | 469 | @retval EFI_ACCESS_DENIED This instance of the EFI DHCPv4 Protocol driver was not in the\r |
470 | Dhcp4Stopped, Dhcp4Init, Dhcp4InitReboot, or Dhcp4Bound state;\r | |
471 | Or onother instance of this EFI DHCPv4 Protocol driver is already\r | |
472 | in a valid configured state.\r | |
74fec708 LG |
473 | @retval EFI_INVALID_PARAMETER One or more following conditions are TRUE:\r |
474 | This is NULL.\r | |
475 | DiscoverTryCount > 0 and DiscoverTimeout is NULL\r | |
476 | RequestTryCount > 0 and RequestTimeout is NULL.\r | |
477 | OptionCount >0 and OptionList is NULL.\r | |
478 | ClientAddress is not a valid unicast address.\r | |
d1f95000 | 479 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r |
480 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r | |
481 | \r | |
482 | **/\r | |
305a1279 | 483 | typedef\r |
d1f95000 | 484 | EFI_STATUS\r |
8b13229b | 485 | (EFIAPI *EFI_DHCP4_CONFIGURE)(\r |
d1f95000 | 486 | IN EFI_DHCP4_PROTOCOL *This,\r |
487 | IN EFI_DHCP4_CONFIG_DATA *Dhcp4CfgData OPTIONAL\r | |
ed66e1bc | 488 | );\r |
d1f95000 | 489 | \r |
490 | \r | |
491 | /**\r | |
492 | Starts the DHCP configuration process.\r | |
493 | \r | |
faac3f0c | 494 | The Start() function starts the DHCP configuration process. This function can\r |
495 | be called only when the EFI DHCPv4 Protocol driver is in the Dhcp4Init or\r | |
496 | Dhcp4InitReboot state.\r | |
497 | If the DHCP process completes successfully, the state of the EFI DHCPv4 Protocol\r | |
498 | driver will be transferred through Dhcp4Selecting and Dhcp4Requesting to the\r | |
499 | Dhcp4Bound state. The CompletionEvent will then be signaled if it is not NULL.\r | |
500 | If the process aborts, either by the user or by some unexpected network error,\r | |
501 | the state is restored to the Dhcp4Init state. The Start() function can be called\r | |
502 | again to restart the process.\r | |
503 | Refer to RFC 2131 for precise state transitions during this process. At the\r | |
504 | time when each event occurs in this process, the callback function that was set\r | |
505 | by EFI_DHCP4_PROTOCOL.Configure() will be called and the user can take this\r | |
506 | opportunity to control the process.\r | |
9095d37b | 507 | \r |
af2dc6a7 | 508 | @param This The pointer to the EFI_DHCP4_PROTOCOL instance.\r |
509 | @param CompletionEvent If not NULL, it indicates the event that will be signaled when the\r | |
d1f95000 | 510 | EFI DHCPv4 Protocol driver is transferred into the\r |
511 | Dhcp4Bound state or when the DHCP process is aborted.\r | |
512 | EFI_DHCP4_PROTOCOL.GetModeData() can be called to\r | |
513 | check the completion status. If NULL,\r | |
514 | EFI_DHCP4_PROTOCOL.Start() will wait until the driver\r | |
515 | is transferred into the Dhcp4Bound state or the process fails.\r | |
516 | \r | |
517 | @retval EFI_SUCCESS The DHCP configuration process has started, or it has completed\r | |
518 | when CompletionEvent is NULL.\r | |
519 | @retval EFI_NOT_STARTED The EFI DHCPv4 Protocol driver is in the Dhcp4Stopped\r | |
520 | state. EFI_DHCP4_PROTOCOL. Configure() needs to be called.\r | |
521 | @retval EFI_INVALID_PARAMETER This is NULL.\r | |
522 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
523 | @retval EFI_TIMEOUT The DHCP configuration process failed because no response was\r | |
524 | received from the server within the specified timeout value.\r | |
525 | @retval EFI_ABORTED The user aborted the DHCP process.\r | |
526 | @retval EFI_ALREADY_STARTED Some other EFI DHCPv4 Protocol instance already started the\r | |
527 | DHCP process.\r | |
528 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r | |
c5c3e7e2 | 529 | @retval EFI_NO_MEDIA There was a media error.\r |
d1f95000 | 530 | \r |
531 | **/\r | |
305a1279 | 532 | typedef\r |
d1f95000 | 533 | EFI_STATUS\r |
8b13229b | 534 | (EFIAPI *EFI_DHCP4_START)(\r |
d1f95000 | 535 | IN EFI_DHCP4_PROTOCOL *This,\r |
536 | IN EFI_EVENT CompletionEvent OPTIONAL\r | |
ed66e1bc | 537 | );\r |
d1f95000 | 538 | \r |
539 | /**\r | |
540 | Extends the lease time by sending a request packet.\r | |
9095d37b | 541 | \r |
faac3f0c | 542 | The RenewRebind() function is used to manually extend the lease time when the\r |
af2dc6a7 | 543 | EFI DHCPv4 Protocol driver is in the Dhcp4Bound state, and the lease time has\r |
faac3f0c | 544 | not expired yet. This function will send a request packet to the previously\r |
545 | found server (or to any server when RebindRequest is TRUE) and transfer the\r | |
546 | state into the Dhcp4Renewing state (or Dhcp4Rebinding when RebindingRequest is\r | |
547 | TRUE). When a response is received, the state is returned to Dhcp4Bound.\r | |
548 | If no response is received before the try count is exceeded (the RequestTryCount\r | |
549 | field that is specified in EFI_DHCP4_CONFIG_DATA) but before the lease time that\r | |
550 | was issued by the previous server expires, the driver will return to the Dhcp4Bound\r | |
af2dc6a7 | 551 | state, and the previous configuration is restored. The outgoing and incoming packets\r |
faac3f0c | 552 | can be captured by the EFI_DHCP4_CALLBACK function.\r |
d1f95000 | 553 | \r |
af2dc6a7 | 554 | @param This The pointer to the EFI_DHCP4_PROTOCOL instance.\r |
d1f95000 | 555 | @param RebindRequest If TRUE, this function broadcasts the request packets and enters\r |
556 | the Dhcp4Rebinding state. Otherwise, it sends a unicast\r | |
557 | request packet and enters the Dhcp4Renewing state.\r | |
558 | @param CompletionEvent If not NULL, this event is signaled when the renew/rebind phase\r | |
559 | completes or some error occurs.\r | |
560 | EFI_DHCP4_PROTOCOL.GetModeData() can be called to\r | |
561 | check the completion status. If NULL,\r | |
562 | EFI_DHCP4_PROTOCOL.RenewRebind() will busy-wait\r | |
563 | until the DHCP process finishes.\r | |
564 | \r | |
565 | @retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the\r | |
566 | Dhcp4Renewing state or is back to the Dhcp4Bound state.\r | |
567 | @retval EFI_NOT_STARTED The EFI DHCPv4 Protocol driver is in the Dhcp4Stopped\r | |
568 | state. EFI_DHCP4_PROTOCOL.Configure() needs to\r | |
569 | be called.\r | |
570 | @retval EFI_INVALID_PARAMETER This is NULL.\r | |
571 | @retval EFI_TIMEOUT There was no response from the server when the try count was\r | |
572 | exceeded.\r | |
573 | @retval EFI_ACCESS_DENIED The driver is not in the Dhcp4Bound state.\r | |
574 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r | |
575 | \r | |
576 | **/\r | |
577 | typedef\r | |
578 | EFI_STATUS\r | |
8b13229b | 579 | (EFIAPI *EFI_DHCP4_RENEW_REBIND)(\r |
d1f95000 | 580 | IN EFI_DHCP4_PROTOCOL *This,\r |
581 | IN BOOLEAN RebindRequest,\r | |
582 | IN EFI_EVENT CompletionEvent OPTIONAL\r | |
ed66e1bc | 583 | );\r |
d1f95000 | 584 | \r |
585 | /**\r | |
586 | Releases the current address configuration.\r | |
587 | \r | |
faac3f0c | 588 | The Release() function releases the current configured IP address by doing either\r |
589 | of the following:\r | |
590 | * Sending a DHCPRELEASE packet when the EFI DHCPv4 Protocol driver is in the\r | |
591 | Dhcp4Bound state\r | |
592 | * Setting the previously assigned IP address that was provided with the\r | |
593 | EFI_DHCP4_PROTOCOL.Configure() function to 0.0.0.0 when the driver is in\r | |
594 | Dhcp4InitReboot state\r | |
595 | After a successful call to this function, the EFI DHCPv4 Protocol driver returns\r | |
af2dc6a7 | 596 | to the Dhcp4Init state, and any subsequent incoming packets will be discarded silently.\r |
faac3f0c | 597 | \r |
af2dc6a7 | 598 | @param This The pointer to the EFI_DHCP4_PROTOCOL instance.\r |
d1f95000 | 599 | \r |
600 | @retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the Dhcp4Init phase.\r | |
601 | @retval EFI_INVALID_PARAMETER This is NULL.\r | |
602 | @retval EFI_ACCESS_DENIED The EFI DHCPv4 Protocol driver is not Dhcp4InitReboot state.\r | |
603 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r | |
604 | \r | |
605 | **/\r | |
305a1279 | 606 | typedef\r |
d1f95000 | 607 | EFI_STATUS\r |
8b13229b | 608 | (EFIAPI *EFI_DHCP4_RELEASE)(\r |
d1f95000 | 609 | IN EFI_DHCP4_PROTOCOL *This\r |
ed66e1bc | 610 | );\r |
d1f95000 | 611 | \r |
612 | /**\r | |
613 | Stops the current address configuration.\r | |
9095d37b | 614 | \r |
faac3f0c | 615 | The Stop() function is used to stop the DHCP configuration process. After this\r |
616 | function is called successfully, the EFI DHCPv4 Protocol driver is transferred\r | |
617 | into the Dhcp4Stopped state. EFI_DHCP4_PROTOCOL.Configure() needs to be called\r | |
618 | before DHCP configuration process can be started again. This function can be\r | |
619 | called when the EFI DHCPv4 Protocol driver is in any state.\r | |
d1f95000 | 620 | \r |
af2dc6a7 | 621 | @param This The pointer to the EFI_DHCP4_PROTOCOL instance.\r |
305a1279 | 622 | \r |
d1f95000 | 623 | @retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the Dhcp4Stopped phase.\r |
624 | @retval EFI_INVALID_PARAMETER This is NULL.\r | |
625 | \r | |
626 | **/\r | |
305a1279 | 627 | typedef\r |
d1f95000 | 628 | EFI_STATUS\r |
8b13229b | 629 | (EFIAPI *EFI_DHCP4_STOP)(\r |
d1f95000 | 630 | IN EFI_DHCP4_PROTOCOL *This\r |
ed66e1bc | 631 | );\r |
d1f95000 | 632 | \r |
633 | /**\r | |
634 | Builds a DHCP packet, given the options to be appended or deleted or replaced.\r | |
635 | \r | |
faac3f0c | 636 | The Build() function is used to assemble a new packet from the original packet\r |
637 | by replacing or deleting existing options or appending new options. This function\r | |
638 | does not change any state of the EFI DHCPv4 Protocol driver and can be used at\r | |
639 | any time.\r | |
640 | \r | |
af2dc6a7 | 641 | @param This The pointer to the EFI_DHCP4_PROTOCOL instance.\r |
eecd469b | 642 | @param SeedPacket Initial packet to be used as a base for building new packet.\r |
d1f95000 | 643 | @param DeleteCount Number of opcodes in the DeleteList.\r |
644 | @param DeleteList List of opcodes to be deleted from the seed packet.\r | |
645 | Ignored if DeleteCount is zero.\r | |
646 | @param AppendCount Number of entries in the OptionList.\r | |
af2dc6a7 | 647 | @param AppendList The pointer to a DHCP option list to be appended to SeedPacket.\r |
d1f95000 | 648 | If SeedPacket also contains options in this list, they are\r |
649 | replaced by new options (except pad option). Ignored if\r | |
650 | AppendCount is zero. Type EFI_DHCP4_PACKET_OPTION\r | |
af2dc6a7 | 651 | @param NewPacket The pointer to storage for the pointer to the new allocated packet.\r |
d1f95000 | 652 | Use the EFI Boot Service FreePool() on the resulting pointer\r |
653 | when done with the packet.\r | |
654 | \r | |
655 | @retval EFI_SUCCESS The new packet was built.\r | |
656 | @retval EFI_OUT_OF_RESOURCES Storage for the new packet could not be allocated.\r | |
74fec708 LG |
657 | @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:\r |
658 | This is NULL.\r | |
659 | SeedPacket is NULL.\r | |
660 | SeedPacket is not a well-formed DHCP packet.\r | |
661 | AppendCount is not zero and AppendList is NULL.\r | |
662 | DeleteCount is not zero and DeleteList is NULL.\r | |
663 | NewPacket is NULL\r | |
664 | Both DeleteCount and AppendCount are zero and\r | |
665 | NewPacket is not NULL.\r | |
d1f95000 | 666 | \r |
667 | **/\r | |
668 | typedef\r | |
669 | EFI_STATUS\r | |
8b13229b | 670 | (EFIAPI *EFI_DHCP4_BUILD)(\r |
d1f95000 | 671 | IN EFI_DHCP4_PROTOCOL *This,\r |
672 | IN EFI_DHCP4_PACKET *SeedPacket,\r | |
673 | IN UINT32 DeleteCount,\r | |
674 | IN UINT8 *DeleteList OPTIONAL,\r | |
675 | IN UINT32 AppendCount,\r | |
676 | IN EFI_DHCP4_PACKET_OPTION *AppendList[] OPTIONAL,\r | |
677 | OUT EFI_DHCP4_PACKET **NewPacket\r | |
ed66e1bc | 678 | );\r |
faac3f0c | 679 | \r |
680 | \r | |
d1f95000 | 681 | /**\r |
682 | Transmits a DHCP formatted packet and optionally waits for responses.\r | |
9095d37b | 683 | \r |
faac3f0c | 684 | The TransmitReceive() function is used to transmit a DHCP packet and optionally\r |
685 | wait for the response from servers. This function does not change the state of\r | |
af2dc6a7 | 686 | the EFI DHCPv4 Protocol driver. It can be used at any time because of this.\r |
d1f95000 | 687 | \r |
af2dc6a7 | 688 | @param This The pointer to the EFI_DHCP4_PROTOCOL instance.\r |
689 | @param Token The pointer to the EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN structure.\r | |
d1f95000 | 690 | \r |
691 | @retval EFI_SUCCESS The packet was successfully queued for transmission.\r | |
74fec708 LG |
692 | @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:\r |
693 | This is NULL.\r | |
694 | Token.RemoteAddress is zero.\r | |
695 | Token.Packet is NULL.\r | |
696 | Token.Packet is not a well-formed DHCP packet.\r | |
697 | The transaction ID in Token.Packet is in use by another DHCP process.\r | |
d1f95000 | 698 | @retval EFI_NOT_READY The previous call to this function has not finished yet. Try to call\r |
699 | this function after collection process completes.\r | |
700 | @retval EFI_NO_MAPPING The default station address is not available yet.\r | |
701 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
ff7630cc | 702 | @retval EFI_UNSUPPORTED The implementation doesn't support this function\r |
d1f95000 | 703 | @retval Others Some other unexpected error occurred.\r |
704 | \r | |
705 | **/\r | |
305a1279 | 706 | typedef\r |
d1f95000 | 707 | EFI_STATUS\r |
8b13229b | 708 | (EFIAPI *EFI_DHCP4_TRANSMIT_RECEIVE)(\r |
d1f95000 | 709 | IN EFI_DHCP4_PROTOCOL *This,\r |
710 | IN EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN *Token\r | |
ed66e1bc | 711 | );\r |
d1f95000 | 712 | \r |
713 | \r | |
714 | /**\r | |
715 | Parses the packed DHCP option data.\r | |
9095d37b | 716 | \r |
faac3f0c | 717 | The Parse() function is used to retrieve the option list from a DHCP packet.\r |
ff7630cc | 718 | If *OptionCount isn't zero, and there is enough space for all the DHCP options\r |
faac3f0c | 719 | in the Packet, each element of PacketOptionList is set to point to somewhere in\r |
720 | the Packet->Dhcp4.Option where a new DHCP option begins. If RFC3396 is supported,\r | |
630b4187 | 721 | the caller should reassemble the parsed DHCP options to get the final result.\r |
ff7630cc | 722 | If *OptionCount is zero or there isn't enough space for all of them, the number\r |
faac3f0c | 723 | of DHCP options in the Packet is returned in OptionCount.\r |
d1f95000 | 724 | \r |
af2dc6a7 | 725 | @param This The pointer to the EFI_DHCP4_PROTOCOL instance.\r |
726 | @param Packet The pointer to packet to be parsed.\r | |
d1f95000 | 727 | @param OptionCount On input, the number of entries in the PacketOptionList.\r |
728 | On output, the number of entries that were written into the\r | |
729 | PacketOptionList.\r | |
af2dc6a7 | 730 | @param PacketOptionList A list of packet option entries to be filled in. End option or pad\r |
d1f95000 | 731 | options are not included.\r |
732 | \r | |
733 | @retval EFI_SUCCESS The packet was successfully parsed.\r | |
74fec708 LG |
734 | @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:\r |
735 | This is NULL.\r | |
af2dc6a7 | 736 | The packet is NULL.\r |
737 | The packet is not a well-formed DHCP packet.\r | |
74fec708 | 738 | OptionCount is NULL.\r |
d1f95000 | 739 | @retval EFI_BUFFER_TOO_SMALL One or more of the following conditions is TRUE:\r |
740 | 1) *OptionCount is smaller than the number of options that\r | |
741 | were found in the Packet.\r | |
742 | 2) PacketOptionList is NULL.\r | |
af2dc6a7 | 743 | @retval EFI_OUT_OF_RESOURCE The packet failed to parse because of a resource shortage.\r |
d1f95000 | 744 | \r |
745 | **/\r | |
746 | typedef\r | |
747 | EFI_STATUS\r | |
8b13229b | 748 | (EFIAPI *EFI_DHCP4_PARSE)(\r |
d1f95000 | 749 | IN EFI_DHCP4_PROTOCOL *This,\r |
750 | IN EFI_DHCP4_PACKET *Packet,\r | |
751 | IN OUT UINT32 *OptionCount,\r | |
752 | OUT EFI_DHCP4_PACKET_OPTION *PacketOptionList[] OPTIONAL\r | |
ed66e1bc | 753 | );\r |
d1f95000 | 754 | \r |
44717a39 | 755 | ///\r |
756 | /// This protocol is used to collect configuration information for the EFI IPv4 Protocol drivers\r | |
757 | /// and to provide DHCPv4 server and PXE boot server discovery services.\r | |
758 | ///\r | |
d1f95000 | 759 | struct _EFI_DHCP4_PROTOCOL {\r |
760 | EFI_DHCP4_GET_MODE_DATA GetModeData;\r | |
761 | EFI_DHCP4_CONFIGURE Configure;\r | |
762 | EFI_DHCP4_START Start;\r | |
763 | EFI_DHCP4_RENEW_REBIND RenewRebind;\r | |
764 | EFI_DHCP4_RELEASE Release;\r | |
765 | EFI_DHCP4_STOP Stop;\r | |
766 | EFI_DHCP4_BUILD Build;\r | |
767 | EFI_DHCP4_TRANSMIT_RECEIVE TransmitReceive;\r | |
768 | EFI_DHCP4_PARSE Parse;\r | |
769 | };\r | |
770 | \r | |
771 | extern EFI_GUID gEfiDhcp4ProtocolGuid;\r | |
772 | extern EFI_GUID gEfiDhcp4ServiceBindingProtocolGuid;\r | |
773 | \r | |
774 | #endif\r |