Ronak Kanabar | 1ae366f | 2023-06-07 01:21:56 +0530 | [diff] [blame^] | 1 | /** @file |
| 2 | UDP4 Service Binding Protocol as defined in UEFI specification. |
| 3 | |
| 4 | The EFI UDPv4 Protocol provides simple packet-oriented services |
| 5 | to transmit and receive UDP packets. |
| 6 | |
| 7 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> |
| 8 | SPDX-License-Identifier: BSD-2-Clause-Patent |
| 9 | |
| 10 | @par Revision Reference: |
| 11 | This Protocol is introduced in UEFI Specification 2.0. |
| 12 | |
| 13 | **/ |
| 14 | |
| 15 | #ifndef __EFI_UDP4_PROTOCOL_H__ |
| 16 | #define __EFI_UDP4_PROTOCOL_H__ |
| 17 | |
| 18 | #include <Protocol/Ip4.h> |
| 19 | // |
| 20 | // GUID definitions |
| 21 | // |
| 22 | #define EFI_UDP4_SERVICE_BINDING_PROTOCOL_GUID \ |
| 23 | { \ |
| 24 | 0x83f01464, 0x99bd, 0x45e5, {0xb3, 0x83, 0xaf, 0x63, 0x05, 0xd8, 0xe9, 0xe6 } \ |
| 25 | } |
| 26 | |
| 27 | #define EFI_UDP4_PROTOCOL_GUID \ |
| 28 | { \ |
| 29 | 0x3ad9df29, 0x4501, 0x478d, {0xb1, 0xf8, 0x7f, 0x7f, 0xe7, 0x0e, 0x50, 0xf3 } \ |
| 30 | } |
| 31 | |
| 32 | typedef struct _EFI_UDP4_PROTOCOL EFI_UDP4_PROTOCOL; |
| 33 | |
| 34 | /// |
| 35 | /// EFI_UDP4_SERVICE_POINT is deprecated in the UEFI 2.4B and should not be used any more. |
| 36 | /// The definition in here is only present to provide backwards compatability. |
| 37 | /// |
| 38 | typedef struct { |
| 39 | EFI_HANDLE InstanceHandle; |
| 40 | EFI_IPv4_ADDRESS LocalAddress; |
| 41 | UINT16 LocalPort; |
| 42 | EFI_IPv4_ADDRESS RemoteAddress; |
| 43 | UINT16 RemotePort; |
| 44 | } EFI_UDP4_SERVICE_POINT; |
| 45 | |
| 46 | /// |
| 47 | /// EFI_UDP4_VARIABLE_DATA is deprecated in the UEFI 2.4B and should not be used any more. |
| 48 | /// The definition in here is only present to provide backwards compatability. |
| 49 | /// |
| 50 | typedef struct { |
| 51 | EFI_HANDLE DriverHandle; |
| 52 | UINT32 ServiceCount; |
| 53 | EFI_UDP4_SERVICE_POINT Services[1]; |
| 54 | } EFI_UDP4_VARIABLE_DATA; |
| 55 | |
| 56 | typedef struct { |
| 57 | UINT32 FragmentLength; |
| 58 | VOID *FragmentBuffer; |
| 59 | } EFI_UDP4_FRAGMENT_DATA; |
| 60 | |
| 61 | typedef struct { |
| 62 | EFI_IPv4_ADDRESS SourceAddress; |
| 63 | UINT16 SourcePort; |
| 64 | EFI_IPv4_ADDRESS DestinationAddress; |
| 65 | UINT16 DestinationPort; |
| 66 | } EFI_UDP4_SESSION_DATA; |
| 67 | typedef struct { |
| 68 | // |
| 69 | // Receiving Filters |
| 70 | // |
| 71 | BOOLEAN AcceptBroadcast; |
| 72 | BOOLEAN AcceptPromiscuous; |
| 73 | BOOLEAN AcceptAnyPort; |
| 74 | BOOLEAN AllowDuplicatePort; |
| 75 | // |
| 76 | // I/O parameters |
| 77 | // |
| 78 | UINT8 TypeOfService; |
| 79 | UINT8 TimeToLive; |
| 80 | BOOLEAN DoNotFragment; |
| 81 | UINT32 ReceiveTimeout; |
| 82 | UINT32 TransmitTimeout; |
| 83 | // |
| 84 | // Access Point |
| 85 | // |
| 86 | BOOLEAN UseDefaultAddress; |
| 87 | EFI_IPv4_ADDRESS StationAddress; |
| 88 | EFI_IPv4_ADDRESS SubnetMask; |
| 89 | UINT16 StationPort; |
| 90 | EFI_IPv4_ADDRESS RemoteAddress; |
| 91 | UINT16 RemotePort; |
| 92 | } EFI_UDP4_CONFIG_DATA; |
| 93 | |
| 94 | typedef struct { |
| 95 | EFI_UDP4_SESSION_DATA *UdpSessionData; // OPTIONAL |
| 96 | EFI_IPv4_ADDRESS *GatewayAddress; // OPTIONAL |
| 97 | UINT32 DataLength; |
| 98 | UINT32 FragmentCount; |
| 99 | EFI_UDP4_FRAGMENT_DATA FragmentTable[1]; |
| 100 | } EFI_UDP4_TRANSMIT_DATA; |
| 101 | |
| 102 | typedef struct { |
| 103 | EFI_TIME TimeStamp; |
| 104 | EFI_EVENT RecycleSignal; |
| 105 | EFI_UDP4_SESSION_DATA UdpSession; |
| 106 | UINT32 DataLength; |
| 107 | UINT32 FragmentCount; |
| 108 | EFI_UDP4_FRAGMENT_DATA FragmentTable[1]; |
| 109 | } EFI_UDP4_RECEIVE_DATA; |
| 110 | |
| 111 | typedef struct { |
| 112 | EFI_EVENT Event; |
| 113 | EFI_STATUS Status; |
| 114 | union { |
| 115 | EFI_UDP4_RECEIVE_DATA *RxData; |
| 116 | EFI_UDP4_TRANSMIT_DATA *TxData; |
| 117 | } Packet; |
| 118 | } EFI_UDP4_COMPLETION_TOKEN; |
| 119 | |
| 120 | /** |
| 121 | Reads the current operational settings. |
| 122 | |
| 123 | The GetModeData() function copies the current operational settings of this EFI |
| 124 | UDPv4 Protocol instance into user-supplied buffers. This function is used |
| 125 | optionally to retrieve the operational mode data of underlying networks or |
| 126 | drivers. |
| 127 | |
| 128 | @param This The pointer to the EFI_UDP4_PROTOCOL instance. |
| 129 | @param Udp4ConfigData The pointer to the buffer to receive the current configuration data. |
| 130 | @param Ip4ModeData The pointer to the EFI IPv4 Protocol mode data structure. |
| 131 | @param MnpConfigData The pointer to the managed network configuration data structure. |
| 132 | @param SnpModeData The pointer to the simple network mode data structure. |
| 133 | |
| 134 | @retval EFI_SUCCESS The mode data was read. |
| 135 | @retval EFI_NOT_STARTED When Udp4ConfigData is queried, no configuration data is |
| 136 | available because this instance has not been started. |
| 137 | @retval EFI_INVALID_PARAMETER This is NULL. |
| 138 | |
| 139 | **/ |
| 140 | typedef |
| 141 | EFI_STATUS |
| 142 | (EFIAPI *EFI_UDP4_GET_MODE_DATA)( |
| 143 | IN EFI_UDP4_PROTOCOL *This, |
| 144 | OUT EFI_UDP4_CONFIG_DATA *Udp4ConfigData OPTIONAL, |
| 145 | OUT EFI_IP4_MODE_DATA *Ip4ModeData OPTIONAL, |
| 146 | OUT EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData OPTIONAL, |
| 147 | OUT EFI_SIMPLE_NETWORK_MODE *SnpModeData OPTIONAL |
| 148 | ); |
| 149 | |
| 150 | /** |
| 151 | Initializes, changes, or resets the operational parameters for this instance of the EFI UDPv4 |
| 152 | Protocol. |
| 153 | |
| 154 | The Configure() function is used to do the following: |
| 155 | * Initialize and start this instance of the EFI UDPv4 Protocol. |
| 156 | * Change the filtering rules and operational parameters. |
| 157 | * Reset this instance of the EFI UDPv4 Protocol. |
| 158 | Until these parameters are initialized, no network traffic can be sent or |
| 159 | received by this instance. This instance can be also reset by calling Configure() |
| 160 | with UdpConfigData set to NULL. Once reset, the receiving queue and transmitting |
| 161 | queue are flushed and no traffic is allowed through this instance. |
| 162 | With different parameters in UdpConfigData, Configure() can be used to bind |
| 163 | this instance to specified port. |
| 164 | |
| 165 | @param This The pointer to the EFI_UDP4_PROTOCOL instance. |
| 166 | @param Udp4ConfigData The pointer to the buffer to receive the current configuration data. |
| 167 | |
| 168 | @retval EFI_SUCCESS The configuration settings were set, changed, or reset successfully. |
| 169 | @retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP, |
| 170 | RARP, etc.) is not finished yet. |
| 171 | @retval EFI_INVALID_PARAMETER This is NULL. |
| 172 | @retval EFI_INVALID_PARAMETER UdpConfigData.StationAddress is not a valid unicast IPv4 address. |
| 173 | @retval EFI_INVALID_PARAMETER UdpConfigData.SubnetMask is not a valid IPv4 address mask. The subnet |
| 174 | mask must be contiguous. |
| 175 | @retval EFI_INVALID_PARAMETER UdpConfigData.RemoteAddress is not a valid unicast IPv4 address if it |
| 176 | is not zero. |
| 177 | @retval EFI_ALREADY_STARTED The EFI UDPv4 Protocol instance is already started/configured |
| 178 | and must be stopped/reset before it can be reconfigured. |
| 179 | @retval EFI_ACCESS_DENIED UdpConfigData. AllowDuplicatePort is FALSE |
| 180 | and UdpConfigData.StationPort is already used by |
| 181 | other instance. |
| 182 | @retval EFI_OUT_OF_RESOURCES The EFI UDPv4 Protocol driver cannot allocate memory for this |
| 183 | EFI UDPv4 Protocol instance. |
| 184 | @retval EFI_DEVICE_ERROR An unexpected network or system error occurred and this instance |
| 185 | was not opened. |
| 186 | |
| 187 | **/ |
| 188 | typedef |
| 189 | EFI_STATUS |
| 190 | (EFIAPI *EFI_UDP4_CONFIGURE)( |
| 191 | IN EFI_UDP4_PROTOCOL *This, |
| 192 | IN EFI_UDP4_CONFIG_DATA *UdpConfigData OPTIONAL |
| 193 | ); |
| 194 | |
| 195 | /** |
| 196 | Joins and leaves multicast groups. |
| 197 | |
| 198 | The Groups() function is used to enable and disable the multicast group |
| 199 | filtering. If the JoinFlag is FALSE and the MulticastAddress is NULL, then all |
| 200 | currently joined groups are left. |
| 201 | |
| 202 | @param This The pointer to the EFI_UDP4_PROTOCOL instance. |
| 203 | @param JoinFlag Set to TRUE to join a multicast group. Set to FALSE to leave one |
| 204 | or all multicast groups. |
| 205 | @param MulticastAddress The pointer to multicast group address to join or leave. |
| 206 | |
| 207 | @retval EFI_SUCCESS The operation completed successfully. |
| 208 | @retval EFI_NOT_STARTED The EFI UDPv4 Protocol instance has not been started. |
| 209 | @retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP, |
| 210 | RARP, etc.) is not finished yet. |
| 211 | @retval EFI_OUT_OF_RESOURCES Could not allocate resources to join the group. |
| 212 | @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: |
| 213 | - This is NULL. |
| 214 | - JoinFlag is TRUE and MulticastAddress is NULL. |
| 215 | - JoinFlag is TRUE and *MulticastAddress is not |
| 216 | a valid multicast address. |
| 217 | @retval EFI_ALREADY_STARTED The group address is already in the group table (when |
| 218 | JoinFlag is TRUE). |
| 219 | @retval EFI_NOT_FOUND The group address is not in the group table (when JoinFlag is |
| 220 | FALSE). |
| 221 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. |
| 222 | |
| 223 | **/ |
| 224 | typedef |
| 225 | EFI_STATUS |
| 226 | (EFIAPI *EFI_UDP4_GROUPS)( |
| 227 | IN EFI_UDP4_PROTOCOL *This, |
| 228 | IN BOOLEAN JoinFlag, |
| 229 | IN EFI_IPv4_ADDRESS *MulticastAddress OPTIONAL |
| 230 | ); |
| 231 | |
| 232 | /** |
| 233 | Adds and deletes routing table entries. |
| 234 | |
| 235 | The Routes() function adds a route to or deletes a route from the routing table. |
| 236 | Routes are determined by comparing the SubnetAddress with the destination IP |
| 237 | address and arithmetically AND-ing it with the SubnetMask. The gateway address |
| 238 | must be on the same subnet as the configured station address. |
| 239 | The default route is added with SubnetAddress and SubnetMask both set to 0.0.0.0. |
| 240 | The default route matches all destination IP addresses that do not match any |
| 241 | other routes. |
| 242 | A zero GatewayAddress is a nonroute. Packets are sent to the destination IP |
| 243 | address if it can be found in the Address Resolution Protocol (ARP) cache or |
| 244 | on the local subnet. One automatic nonroute entry will be inserted into the |
| 245 | routing table for outgoing packets that are addressed to a local subnet |
| 246 | (gateway address of 0.0.0.0). |
| 247 | Each instance of the EFI UDPv4 Protocol has its own independent routing table. |
| 248 | Instances of the EFI UDPv4 Protocol that use the default IP address will also |
| 249 | have copies of the routing table provided by the EFI_IP4_CONFIG_PROTOCOL. These |
| 250 | copies will be updated automatically whenever the IP driver reconfigures its |
| 251 | instances; as a result, the previous modification to these copies will be lost. |
| 252 | |
| 253 | @param This The pointer to the EFI_UDP4_PROTOCOL instance. |
| 254 | @param DeleteRoute Set to TRUE to delete this route from the routing table. |
| 255 | Set to FALSE to add this route to the routing table. |
| 256 | @param SubnetAddress The destination network address that needs to be routed. |
| 257 | @param SubnetMask The subnet mask of SubnetAddress. |
| 258 | @param GatewayAddress The gateway IP address for this route. |
| 259 | |
| 260 | @retval EFI_SUCCESS The operation completed successfully. |
| 261 | @retval EFI_NOT_STARTED The EFI UDPv4 Protocol instance has not been started. |
| 262 | @retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP, |
| 263 | - RARP, etc.) is not finished yet. |
| 264 | @retval EFI_INVALID_PARAMETER One or more parameters are invalid. |
| 265 | @retval EFI_OUT_OF_RESOURCES Could not add the entry to the routing table. |
| 266 | @retval EFI_NOT_FOUND This route is not in the routing table. |
| 267 | @retval EFI_ACCESS_DENIED The route is already defined in the routing table. |
| 268 | |
| 269 | **/ |
| 270 | typedef |
| 271 | EFI_STATUS |
| 272 | (EFIAPI *EFI_UDP4_ROUTES)( |
| 273 | IN EFI_UDP4_PROTOCOL *This, |
| 274 | IN BOOLEAN DeleteRoute, |
| 275 | IN EFI_IPv4_ADDRESS *SubnetAddress, |
| 276 | IN EFI_IPv4_ADDRESS *SubnetMask, |
| 277 | IN EFI_IPv4_ADDRESS *GatewayAddress |
| 278 | ); |
| 279 | |
| 280 | /** |
| 281 | Polls for incoming data packets and processes outgoing data packets. |
| 282 | |
| 283 | The Poll() function can be used by network drivers and applications to increase |
| 284 | the rate that data packets are moved between the communications device and the |
| 285 | transmit and receive queues. |
| 286 | In some systems, the periodic timer event in the managed network driver may not |
| 287 | poll the underlying communications device fast enough to transmit and/or receive |
| 288 | all data packets without missing incoming packets or dropping outgoing packets. |
| 289 | Drivers and applications that are experiencing packet loss should try calling |
| 290 | the Poll() function more often. |
| 291 | |
| 292 | @param This The pointer to the EFI_UDP4_PROTOCOL instance. |
| 293 | |
| 294 | @retval EFI_SUCCESS Incoming or outgoing data was processed. |
| 295 | @retval EFI_INVALID_PARAMETER This is NULL. |
| 296 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. |
| 297 | @retval EFI_TIMEOUT Data was dropped out of the transmit and/or receive queue. |
| 298 | |
| 299 | **/ |
| 300 | typedef |
| 301 | EFI_STATUS |
| 302 | (EFIAPI *EFI_UDP4_POLL)( |
| 303 | IN EFI_UDP4_PROTOCOL *This |
| 304 | ); |
| 305 | |
| 306 | /** |
| 307 | Places an asynchronous receive request into the receiving queue. |
| 308 | |
| 309 | The Receive() function places a completion token into the receive packet queue. |
| 310 | This function is always asynchronous. |
| 311 | The caller must fill in the Token.Event field in the completion token, and this |
| 312 | field cannot be NULL. When the receive operation completes, the EFI UDPv4 Protocol |
| 313 | driver updates the Token.Status and Token.Packet.RxData fields and the Token.Event |
| 314 | is signaled. Providing a proper notification function and context for the event |
| 315 | will enable the user to receive the notification and receiving status. That |
| 316 | notification function is guaranteed to not be re-entered. |
| 317 | |
| 318 | @param This The pointer to the EFI_UDP4_PROTOCOL instance. |
| 319 | @param Token The pointer to a token that is associated with the receive data |
| 320 | descriptor. |
| 321 | |
| 322 | @retval EFI_SUCCESS The receive completion token was cached. |
| 323 | @retval EFI_NOT_STARTED This EFI UDPv4 Protocol instance has not been started. |
| 324 | @retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP, RARP, etc.) |
| 325 | is not finished yet. |
| 326 | @retval EFI_INVALID_PARAMETER This is NULL. |
| 327 | @retval EFI_INVALID_PARAMETER Token is NULL. |
| 328 | @retval EFI_INVALID_PARAMETER Token.Event is NULL. |
| 329 | @retval EFI_OUT_OF_RESOURCES The receive completion token could not be queued due to a lack of system |
| 330 | resources (usually memory). |
| 331 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. |
| 332 | @retval EFI_ACCESS_DENIED A receive completion token with the same Token.Event was already in |
| 333 | the receive queue. |
| 334 | @retval EFI_NOT_READY The receive request could not be queued because the receive queue is full. |
| 335 | |
| 336 | **/ |
| 337 | typedef |
| 338 | EFI_STATUS |
| 339 | (EFIAPI *EFI_UDP4_RECEIVE)( |
| 340 | IN EFI_UDP4_PROTOCOL *This, |
| 341 | IN EFI_UDP4_COMPLETION_TOKEN *Token |
| 342 | ); |
| 343 | |
| 344 | /** |
| 345 | Queues outgoing data packets into the transmit queue. |
| 346 | |
| 347 | The Transmit() function places a sending request to this instance of the EFI |
| 348 | UDPv4 Protocol, alongside the transmit data that was filled by the user. Whenever |
| 349 | the packet in the token is sent out or some errors occur, the Token.Event will |
| 350 | be signaled and Token.Status is updated. Providing a proper notification function |
| 351 | and context for the event will enable the user to receive the notification and |
| 352 | transmitting status. |
| 353 | |
| 354 | @param This The pointer to the EFI_UDP4_PROTOCOL instance. |
| 355 | @param Token The pointer to the completion token that will be placed into the |
| 356 | transmit queue. |
| 357 | |
| 358 | @retval EFI_SUCCESS The data has been queued for transmission. |
| 359 | @retval EFI_NOT_STARTED This EFI UDPv4 Protocol instance has not been started. |
| 360 | @retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP, |
| 361 | RARP, etc.) is not finished yet. |
| 362 | @retval EFI_INVALID_PARAMETER One or more parameters are invalid. |
| 363 | @retval EFI_ACCESS_DENIED The transmit completion token with the same |
| 364 | Token.Event was already in the transmit queue. |
| 365 | @retval EFI_NOT_READY The completion token could not be queued because the |
| 366 | transmit queue is full. |
| 367 | @retval EFI_OUT_OF_RESOURCES Could not queue the transmit data. |
| 368 | @retval EFI_NOT_FOUND There is no route to the destination network or address. |
| 369 | @retval EFI_BAD_BUFFER_SIZE The data length is greater than the maximum UDP packet |
| 370 | size. Or the length of the IP header + UDP header + data |
| 371 | length is greater than MTU if DoNotFragment is TRUE. |
| 372 | |
| 373 | **/ |
| 374 | typedef |
| 375 | EFI_STATUS |
| 376 | (EFIAPI *EFI_UDP4_TRANSMIT)( |
| 377 | IN EFI_UDP4_PROTOCOL *This, |
| 378 | IN EFI_UDP4_COMPLETION_TOKEN *Token |
| 379 | ); |
| 380 | |
| 381 | /** |
| 382 | Aborts an asynchronous transmit or receive request. |
| 383 | |
| 384 | The Cancel() function is used to abort a pending transmit or receive request. |
| 385 | If the token is in the transmit or receive request queues, after calling this |
| 386 | function, Token.Status will be set to EFI_ABORTED and then Token.Event will be |
| 387 | signaled. If the token is not in one of the queues, which usually means that |
| 388 | the asynchronous operation has completed, this function will not signal the |
| 389 | token and EFI_NOT_FOUND is returned. |
| 390 | |
| 391 | @param This The pointer to the EFI_UDP4_PROTOCOL instance. |
| 392 | @param Token The pointer to a token that has been issued by |
| 393 | EFI_UDP4_PROTOCOL.Transmit() or |
| 394 | EFI_UDP4_PROTOCOL.Receive().If NULL, all pending |
| 395 | tokens are aborted. |
| 396 | |
| 397 | @retval EFI_SUCCESS The asynchronous I/O request was aborted and Token.Event |
| 398 | was signaled. When Token is NULL, all pending requests are |
| 399 | aborted and their events are signaled. |
| 400 | @retval EFI_INVALID_PARAMETER This is NULL. |
| 401 | @retval EFI_NOT_STARTED This instance has not been started. |
| 402 | @retval EFI_NO_MAPPING When using the default address, configuration (DHCP, BOOTP, |
| 403 | RARP, etc.) is not finished yet. |
| 404 | @retval EFI_NOT_FOUND When Token is not NULL, the asynchronous I/O request was |
| 405 | not found in the transmit or receive queue. It has either completed |
| 406 | or was not issued by Transmit() and Receive(). |
| 407 | |
| 408 | **/ |
| 409 | typedef |
| 410 | EFI_STATUS |
| 411 | (EFIAPI *EFI_UDP4_CANCEL)( |
| 412 | IN EFI_UDP4_PROTOCOL *This, |
| 413 | IN EFI_UDP4_COMPLETION_TOKEN *Token OPTIONAL |
| 414 | ); |
| 415 | |
| 416 | /// |
| 417 | /// The EFI_UDP4_PROTOCOL defines an EFI UDPv4 Protocol session that can be used |
| 418 | /// by any network drivers, applications, or daemons to transmit or receive UDP packets. |
| 419 | /// This protocol instance can either be bound to a specified port as a service or |
| 420 | /// connected to some remote peer as an active client. Each instance has its own settings, |
| 421 | /// such as the routing table and group table, which are independent from each other. |
| 422 | /// |
| 423 | struct _EFI_UDP4_PROTOCOL { |
| 424 | EFI_UDP4_GET_MODE_DATA GetModeData; |
| 425 | EFI_UDP4_CONFIGURE Configure; |
| 426 | EFI_UDP4_GROUPS Groups; |
| 427 | EFI_UDP4_ROUTES Routes; |
| 428 | EFI_UDP4_TRANSMIT Transmit; |
| 429 | EFI_UDP4_RECEIVE Receive; |
| 430 | EFI_UDP4_CANCEL Cancel; |
| 431 | EFI_UDP4_POLL Poll; |
| 432 | }; |
| 433 | |
| 434 | extern EFI_GUID gEfiUdp4ServiceBindingProtocolGuid; |
| 435 | extern EFI_GUID gEfiUdp4ProtocolGuid; |
| 436 | |
| 437 | #endif |