1 /** @file 2 The EFI UDPv6 (User Datagram Protocol version 6) Protocol Definition, which is built upon 3 the EFI IPv6 Protocol and provides simple packet-oriented services to transmit and receive 4 UDP packets. 5 6 Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR> 7 This program and the accompanying materials 8 are licensed and made available under the terms and conditions of the BSD License 9 which accompanies this distribution. The full text of the license may be found at 10 http://opensource.org/licenses/bsd-license.php 11 12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 14 15 @par Revision Reference: 16 This Protocol is introduced in UEFI Specification 2.2 17 18 **/ 19 20 #ifndef __EFI_UDP6_PROTOCOL_H__ 21 #define __EFI_UDP6_PROTOCOL_H__ 22 23 #include <Protocol/Ip6.h> 24 25 #define EFI_UDP6_SERVICE_BINDING_PROTOCOL_GUID \ 26 { \ 27 0x66ed4721, 0x3c98, 0x4d3e, {0x81, 0xe3, 0xd0, 0x3d, 0xd3, 0x9a, 0x72, 0x54 } \ 28 } 29 30 #define EFI_UDP6_PROTOCOL_GUID \ 31 { \ 32 0x4f948815, 0xb4b9, 0x43cb, {0x8a, 0x33, 0x90, 0xe0, 0x60, 0xb3, 0x49, 0x55 } \ 33 } 34 35 /// 36 /// EFI_UDP6_SERVICE_POINT is deprecated in the UEFI 2.4B and should not be used any more. 37 /// The definition in here is only present to provide backwards compatability. 38 /// 39 typedef struct { 40 /// 41 /// The EFI UDPv6 Protocol instance handle that is using this address/port pair. 42 /// 43 EFI_HANDLE InstanceHandle; 44 /// 45 /// The IPv6 address to which this instance of the EFI UDPv6 Protocol is bound. 46 /// Set to 0::/128, if this instance is used to listen all packets from any 47 /// source address. 48 /// 49 EFI_IPv6_ADDRESS LocalAddress; 50 /// 51 /// The port number in host byte order on which the service is listening. 52 /// 53 UINT16 LocalPort; 54 /// 55 /// The IPv6 address of the remote host. May be 0::/128 if it is not connected 56 /// to any remote host or connected with more than one remote host. 57 /// 58 EFI_IPv6_ADDRESS RemoteAddress; 59 /// 60 /// The port number in host byte order on which the remote host is 61 /// listening. Maybe zero if it is not connected to any remote host. 62 /// 63 UINT16 RemotePort; 64 } EFI_UDP6_SERVICE_POINT; 65 66 /// 67 /// EFI_UDP6_VARIABLE_DATA is deprecated in the UEFI 2.4B and should not be used any more. 68 /// The definition in here is only present to provide backwards compatability. 69 /// 70 typedef struct { 71 /// 72 /// The handle of the driver that creates this entry. 73 /// 74 EFI_HANDLE DriverHandle; 75 /// 76 /// The number of address/port pairs that follow this data structure. 77 /// 78 UINT32 ServiceCount; 79 /// 80 /// List of address/port pairs that are currently in use. 81 /// 82 EFI_UDP6_SERVICE_POINT Services[1]; 83 } EFI_UDP6_VARIABLE_DATA; 84 85 typedef struct _EFI_UDP6_PROTOCOL EFI_UDP6_PROTOCOL; 86 87 /// 88 /// EFI_UDP6_FRAGMENT_DATA allows multiple receive or transmit buffers to be specified. 89 /// The purpose of this structure is to avoid copying the same packet multiple times. 90 /// 91 typedef struct { 92 UINT32 FragmentLength; ///< Length of the fragment data buffer. 93 VOID *FragmentBuffer; ///< Pointer to the fragment data buffer. 94 } EFI_UDP6_FRAGMENT_DATA; 95 96 /// 97 /// The EFI_UDP6_SESSION_DATA is used to retrieve the settings when receiving packets or 98 /// to override the existing settings (only DestinationAddress and DestinationPort can 99 /// be overridden) of this EFI UDPv6 Protocol instance when sending packets. 100 /// 101 typedef struct { 102 /// 103 /// Address from which this packet is sent. This field should not be used when 104 /// sending packets. 105 /// 106 EFI_IPv6_ADDRESS SourceAddress; 107 /// 108 /// Port from which this packet is sent. It is in host byte order. This field should 109 /// not be used when sending packets. 110 /// 111 UINT16 SourcePort; 112 /// 113 /// Address to which this packet is sent. When sending packet, it'll be ignored 114 /// if it is zero. 115 /// 116 EFI_IPv6_ADDRESS DestinationAddress; 117 /// 118 /// Port to which this packet is sent. When sending packet, it'll be 119 /// ignored if it is zero. 120 /// 121 UINT16 DestinationPort; 122 } EFI_UDP6_SESSION_DATA; 123 124 typedef struct { 125 /// 126 /// Set to TRUE to accept UDP packets that are sent to any address. 127 /// 128 BOOLEAN AcceptPromiscuous; 129 /// 130 /// Set to TRUE to accept UDP packets that are sent to any port. 131 /// 132 BOOLEAN AcceptAnyPort; 133 /// 134 /// Set to TRUE to allow this EFI UDPv6 Protocol child instance to open a port number 135 /// that is already being used by another EFI UDPv6 Protocol child instance. 136 /// 137 BOOLEAN AllowDuplicatePort; 138 /// 139 /// TrafficClass field in transmitted IPv6 packets. 140 /// 141 UINT8 TrafficClass; 142 /// 143 /// HopLimit field in transmitted IPv6 packets. 144 /// 145 UINT8 HopLimit; 146 /// 147 /// The receive timeout value (number of microseconds) to be associated with each 148 /// incoming packet. Zero means do not drop incoming packets. 149 /// 150 UINT32 ReceiveTimeout; 151 /// 152 /// The transmit timeout value (number of microseconds) to be associated with each 153 /// outgoing packet. Zero means do not drop outgoing packets. 154 /// 155 UINT32 TransmitTimeout; 156 /// 157 /// The station IP address that will be assigned to this EFI UDPv6 Protocol instance. 158 /// The EFI UDPv6 and EFI IPv6 Protocol drivers will only deliver incoming packets 159 /// whose destination matches this IP address exactly. Address 0::/128 is also accepted 160 /// as a special case. Under this situation, underlying IPv6 driver is responsible for 161 /// binding a source address to this EFI IPv6 protocol instance according to source 162 /// address selection algorithm. Only incoming packet from the selected source address 163 /// is delivered. This field can be set and changed only when the EFI IPv6 driver is 164 /// transitioning from the stopped to the started states. If no address is available 165 /// for selecting, the EFI IPv6 Protocol driver will use EFI_IP6_CONFIG_PROTOCOL to 166 /// retrieve the IPv6 address. 167 EFI_IPv6_ADDRESS StationAddress; 168 /// 169 /// The port number to which this EFI UDPv6 Protocol instance is bound. If a client 170 /// of the EFI UDPv6 Protocol does not care about the port number, set StationPort 171 /// to zero. The EFI UDPv6 Protocol driver will assign a random port number to transmitted 172 /// UDP packets. Ignored it if AcceptAnyPort is TRUE. 173 /// 174 UINT16 StationPort; 175 /// 176 /// The IP address of remote host to which this EFI UDPv6 Protocol instance is connecting. 177 /// If RemoteAddress is not 0::/128, this EFI UDPv6 Protocol instance will be connected to 178 /// RemoteAddress; i.e., outgoing packets of this EFI UDPv6 Protocol instance will be sent 179 /// to this address by default and only incoming packets from this address will be delivered 180 /// to client. Ignored for incoming filtering if AcceptPromiscuous is TRUE. 181 EFI_IPv6_ADDRESS RemoteAddress; 182 /// 183 /// The port number of the remote host to which this EFI UDPv6 Protocol instance is connecting. 184 /// If it is not zero, outgoing packets of this EFI UDPv6 Protocol instance will be sent to 185 /// this port number by default and only incoming packets from this port will be delivered 186 /// to client. Ignored if RemoteAddress is 0::/128 and ignored for incoming filtering if 187 /// AcceptPromiscuous is TRUE. 188 UINT16 RemotePort; 189 } EFI_UDP6_CONFIG_DATA; 190 191 /// 192 /// The EFI UDPv6 Protocol client must fill this data structure before sending a packet. 193 /// The packet may contain multiple buffers that may be not in a continuous memory location. 194 /// 195 typedef struct { 196 /// 197 /// If not NULL, the data that is used to override the transmitting settings.Only the two 198 /// filed UdpSessionData.DestinationAddress and UdpSessionData.DestionPort can be used as 199 /// the transmitting setting filed. 200 /// 201 EFI_UDP6_SESSION_DATA *UdpSessionData; 202 /// 203 /// Sum of the fragment data length. Must not exceed the maximum UDP packet size. 204 /// 205 UINT32 DataLength; 206 /// 207 /// Number of fragments. 208 /// 209 UINT32 FragmentCount; 210 /// 211 /// Array of fragment descriptors. 212 /// 213 EFI_UDP6_FRAGMENT_DATA FragmentTable[1]; 214 } EFI_UDP6_TRANSMIT_DATA; 215 216 /// 217 /// EFI_UDP6_RECEIVE_DATA is filled by the EFI UDPv6 Protocol driver when this EFI UDPv6 218 /// Protocol instance receives an incoming packet. If there is a waiting token for incoming 219 /// packets, the CompletionToken.Packet.RxData field is updated to this incoming packet and 220 /// the CompletionToken.Event is signaled. The EFI UDPv6 Protocol client must signal the 221 /// RecycleSignal after processing the packet. 222 /// FragmentTable could contain multiple buffers that are not in the continuous memory locations. 223 /// The EFI UDPv6 Protocol client might need to combine two or more buffers in FragmentTable to 224 /// form their own protocol header. 225 /// 226 typedef struct { 227 /// 228 /// Time when the EFI UDPv6 Protocol accepted the packet. 229 /// 230 EFI_TIME TimeStamp; 231 /// 232 /// Indicates the event to signal when the received data has been processed. 233 /// 234 EFI_EVENT RecycleSignal; 235 /// 236 /// The UDP session data including SourceAddress, SourcePort, DestinationAddress, 237 /// and DestinationPort. 238 /// 239 EFI_UDP6_SESSION_DATA UdpSession; 240 /// 241 /// The sum of the fragment data length. 242 /// 243 UINT32 DataLength; 244 /// 245 /// Number of fragments. Maybe zero. 246 /// 247 UINT32 FragmentCount; 248 /// 249 /// Array of fragment descriptors. Maybe zero. 250 /// 251 EFI_UDP6_FRAGMENT_DATA FragmentTable[1]; 252 } EFI_UDP6_RECEIVE_DATA; 253 254 /// 255 /// The EFI_UDP6_COMPLETION_TOKEN structures are used for both transmit and receive operations. 256 /// When used for transmitting, the Event and TxData fields must be filled in by the EFI UDPv6 257 /// Protocol client. After the transmit operation completes, the Status field is updated by the 258 /// EFI UDPv6 Protocol and the Event is signaled. 259 /// When used for receiving, only the Event field must be filled in by the EFI UDPv6 Protocol 260 /// client. After a packet is received, RxData and Status are filled in by the EFI UDPv6 Protocol 261 /// and the Event is signaled. 262 /// 263 typedef struct { 264 /// 265 /// This Event will be signaled after the Status field is updated by the EFI UDPv6 Protocol 266 /// driver. The type of Event must be EVT_NOTIFY_SIGNAL. 267 /// 268 EFI_EVENT Event; 269 /// 270 /// Will be set to one of the following values: 271 /// - EFI_SUCCESS: The receive or transmit operation completed successfully. 272 /// - EFI_ABORTED: The receive or transmit was aborted. 273 /// - EFI_TIMEOUT: The transmit timeout expired. 274 /// - EFI_NETWORK_UNREACHABLE: The destination network is unreachable. RxData is set to 275 /// NULL in this situation. 276 /// - EFI_HOST_UNREACHABLE: The destination host is unreachable. RxData is set to NULL in 277 /// this situation. 278 /// - EFI_PROTOCOL_UNREACHABLE: The UDP protocol is unsupported in the remote system. 279 /// RxData is set to NULL in this situation. 280 /// - EFI_PORT_UNREACHABLE: No service is listening on the remote port. RxData is set to 281 /// NULL in this situation. 282 /// - EFI_ICMP_ERROR: Some other Internet Control Message Protocol (ICMP) error report was 283 /// received. For example, packets are being sent too fast for the destination to receive them 284 /// and the destination sent an ICMP source quench report. RxData is set to NULL in this situation. 285 /// - EFI_DEVICE_ERROR: An unexpected system or network error occurred. 286 /// - EFI_SECURITY_VIOLATION: The transmit or receive was failed because of IPsec policy check. 287 /// - EFI_NO_MEDIA: There was a media error. 288 /// 289 EFI_STATUS Status; 290 union { 291 /// 292 /// When this token is used for receiving, RxData is a pointer to EFI_UDP6_RECEIVE_DATA. 293 /// 294 EFI_UDP6_RECEIVE_DATA *RxData; 295 /// 296 /// When this token is used for transmitting, TxData is a pointer to EFI_UDP6_TRANSMIT_DATA. 297 /// 298 EFI_UDP6_TRANSMIT_DATA *TxData; 299 } Packet; 300 } EFI_UDP6_COMPLETION_TOKEN; 301 302 /** 303 Read the current operational settings. 304 305 The GetModeData() function copies the current operational settings of this EFI UDPv6 Protocol 306 instance into user-supplied buffers. This function is used optionally to retrieve the operational 307 mode data of underlying networks or drivers. 308 309 @param[in] This Pointer to the EFI_UDP6_PROTOCOL instance. 310 @param[out] Udp6ConfigData The buffer in which the current UDP configuration data is returned. 311 @param[out] Ip6ModeData The buffer in which the current EFI IPv6 Protocol mode data is returned. 312 @param[out] MnpConfigData The buffer in which the current managed network configuration data is 313 returned. 314 @param[out] SnpModeData The buffer in which the simple network mode data is returned. 315 316 @retval EFI_SUCCESS The mode data was read. 317 @retval EFI_NOT_STARTED When Udp6ConfigData is queried, no configuration data is available 318 because this instance has not been started. 319 @retval EFI_INVALID_PARAMETER This is NULL. 320 321 **/ 322 typedef 323 EFI_STATUS 324 (EFIAPI *EFI_UDP6_GET_MODE_DATA)( 325 IN EFI_UDP6_PROTOCOL *This, 326 OUT EFI_UDP6_CONFIG_DATA *Udp6ConfigData OPTIONAL, 327 OUT EFI_IP6_MODE_DATA *Ip6ModeData OPTIONAL, 328 OUT EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData OPTIONAL, 329 OUT EFI_SIMPLE_NETWORK_MODE *SnpModeData OPTIONAL 330 ); 331 332 /** 333 Initializes, changes, or resets the operational parameters for this instance of the EFI UDPv6 334 Protocol. 335 336 The Configure() function is used to do the following: 337 - Initialize and start this instance of the EFI UDPv6 Protocol. 338 - Change the filtering rules and operational parameters. 339 - Reset this instance of the EFI UDPv6 Protocol. 340 341 Until these parameters are initialized, no network traffic can be sent or received by this instance. 342 This instance can be also reset by calling Configure() with UdpConfigData set to NULL. 343 Once reset, the receiving queue and transmitting queue are flushed and no traffic is allowed through 344 this instance. 345 346 With different parameters in UdpConfigData, Configure() can be used to bind this instance to specified 347 port. 348 349 @param[in] This Pointer to the EFI_UDP6_PROTOCOL instance. 350 @param[in] UdpConfigData Pointer to the buffer contained the configuration data. 351 352 @retval EFI_SUCCESS The configuration settings were set, changed, or reset successfully. 353 @retval EFI_NO_MAPPING The underlying IPv6 driver was responsible for choosing a source 354 address for this instance, but no source address was available for use. 355 @retval EFI_INVALID_PARAMETER One or more following conditions are TRUE: 356 - This is NULL. 357 - UdpConfigData.StationAddress neither zero nor one of the configured IP 358 addresses in the underlying IPv6 driver. 359 - UdpConfigData.RemoteAddress is not a valid unicast IPv6 address if it 360 is not zero. 361 @retval EFI_ALREADY_STARTED The EFI UDPv6 Protocol instance is already started/configured and must be 362 stopped/reset before it can be reconfigured. Only TrafficClass, HopLimit, 363 ReceiveTimeout, and TransmitTimeout can be reconfigured without stopping 364 the current instance of the EFI UDPv6 Protocol. 365 @retval EFI_ACCESS_DENIED UdpConfigData.AllowDuplicatePort is FALSE and UdpConfigData.StationPort 366 is already used by other instance. 367 @retval EFI_OUT_OF_RESOURCES The EFI UDPv6 Protocol driver cannot allocate memory for this EFI UDPv6 368 Protocol instance. 369 @retval EFI_DEVICE_ERROR An unexpected network or system error occurred and this instance was not 370 opened. 371 372 **/ 373 typedef 374 EFI_STATUS 375 (EFIAPI *EFI_UDP6_CONFIGURE)( 376 IN EFI_UDP6_PROTOCOL *This, 377 IN EFI_UDP6_CONFIG_DATA *UdpConfigData OPTIONAL 378 ); 379 380 /** 381 Joins and leaves multicast groups. 382 383 The Groups() function is used to join or leave one or more multicast group. 384 If the JoinFlag is FALSE and the MulticastAddress is NULL, then all currently joined groups are left. 385 386 @param[in] This Pointer to the EFI_UDP6_PROTOCOL instance. 387 @param[in] JoinFlag Set to TRUE to join a multicast group. Set to FALSE to leave one 388 or all multicast groups. 389 @param[in] MulticastAddress Pointer to multicast group address to join or leave. 390 391 @retval EFI_SUCCESS The operation completed successfully. 392 @retval EFI_NOT_STARTED The EFI UDPv6 Protocol instance has not been started. 393 @retval EFI_OUT_OF_RESOURCES Could not allocate resources to join the group. 394 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: 395 - This is NULL. 396 - JoinFlag is TRUE and MulticastAddress is NULL. 397 - JoinFlag is TRUE and *MulticastAddress is not a valid multicast address. 398 @retval EFI_ALREADY_STARTED The group address is already in the group table (when JoinFlag is TRUE). 399 @retval EFI_NOT_FOUND The group address is not in the group table (when JoinFlag is FALSE). 400 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. 401 402 **/ 403 typedef 404 EFI_STATUS 405 (EFIAPI *EFI_UDP6_GROUPS)( 406 IN EFI_UDP6_PROTOCOL *This, 407 IN BOOLEAN JoinFlag, 408 IN EFI_IPv6_ADDRESS *MulticastAddress OPTIONAL 409 ); 410 411 /** 412 Queues outgoing data packets into the transmit queue. 413 414 The Transmit() function places a sending request to this instance of the EFI UDPv6 Protocol, 415 alongside the transmit data that was filled by the user. Whenever the packet in the token is 416 sent out or some errors occur, the Token.Event will be signaled and Token.Status is updated. 417 Providing a proper notification function and context for the event will enable the user to 418 receive the notification and transmitting status. 419 420 @param[in] This Pointer to the EFI_UDP6_PROTOCOL instance. 421 @param[in] Token Pointer to the completion token that will be placed into the 422 transmit queue. 423 424 @retval EFI_SUCCESS The data has been queued for transmission. 425 @retval EFI_NOT_STARTED This EFI UDPv6 Protocol instance has not been started. 426 @retval EFI_NO_MAPPING The underlying IPv6 driver was responsible for choosing a source 427 address for this instance, but no source address was available 428 for use. 429 @retval EFI_INVALID_PARAMETER One or more of the following are TRUE: 430 - This is NULL. 431 - Token is NULL. 432 - Token.Event is NULL. 433 - Token.Packet.TxData is NULL. 434 - Token.Packet.TxData.FragmentCount is zero. 435 - Token.Packet.TxData.DataLength is not equal to the sum of fragment 436 lengths. 437 - One or more of the Token.Packet.TxData.FragmentTable[].FragmentLength 438 fields is zero. 439 - One or more of the Token.Packet.TxData.FragmentTable[].FragmentBuffer 440 fields is NULL. 441 - Token.Packet.TxData.UdpSessionData.DestinationAddress is not zero 442 and is not valid unicast Ipv6 address if UdpSessionData is not NULL. 443 - Token.Packet.TxData.UdpSessionData is NULL and this instance's 444 UdpConfigData.RemoteAddress is unspecified. 445 - Token.Packet.TxData.UdpSessionData.DestinationAddress is non-zero 446 when DestinationAddress is configured as non-zero when doing Configure() 447 for this EFI Udp6 protocol instance. 448 - Token.Packet.TxData.UdpSesionData.DestinationAddress is zero when 449 DestinationAddress is unspecified when doing Configure() for this 450 EFI Udp6 protocol instance. 451 @retval EFI_ACCESS_DENIED The transmit completion token with the same Token.Event was already 452 in the transmit queue. 453 @retval EFI_NOT_READY The completion token could not be queued because the transmit queue 454 is full. 455 @retval EFI_OUT_OF_RESOURCES Could not queue the transmit data. 456 @retval EFI_NOT_FOUND There is no route to the destination network or address. 457 @retval EFI_BAD_BUFFER_SIZE The data length is greater than the maximum UDP packet size. 458 459 **/ 460 typedef 461 EFI_STATUS 462 (EFIAPI *EFI_UDP6_TRANSMIT)( 463 IN EFI_UDP6_PROTOCOL *This, 464 IN EFI_UDP6_COMPLETION_TOKEN *Token 465 ); 466 467 /** 468 Places an asynchronous receive request into the receiving queue. 469 470 The Receive() function places a completion token into the receive packet queue. This function is 471 always asynchronous. 472 The caller must fill in the Token.Event field in the completion token, and this field cannot be 473 NULL. When the receive operation completes, the EFI UDPv6 Protocol driver updates the Token.Status 474 and Token.Packet.RxData fields and the Token.Event is signaled. 475 Providing a proper notification function and context for the event will enable the user to receive 476 the notification and receiving status. That notification function is guaranteed to not be re-entered. 477 478 @param[in] This Pointer to the EFI_UDP6_PROTOCOL instance. 479 @param[in] Token Pointer to a token that is associated with the receive data descriptor. 480 481 @retval EFI_SUCCESS The receive completion token was cached. 482 @retval EFI_NOT_STARTED This EFI UDPv6 Protocol instance has not been started. 483 @retval EFI_NO_MAPPING The underlying IPv6 driver was responsible for choosing a source 484 address for this instance, but no source address was available 485 for use. 486 @retval EFI_INVALID_PARAMETER One or more of the following is TRUE: 487 - This is NULL. 488 - Token is NULL. 489 - Token.Event is NULL. 490 @retval EFI_OUT_OF_RESOURCES The receive completion token could not be queued due to a lack of system 491 resources (usually memory). 492 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. The EFI UDPv6 Protocol 493 instance has been reset to startup defaults. 494 @retval EFI_ACCESS_DENIED A receive completion token with the same Token.Event was already in 495 the receive queue. 496 @retval EFI_NOT_READY The receive request could not be queued because the receive queue is full. 497 498 **/ 499 typedef 500 EFI_STATUS 501 (EFIAPI *EFI_UDP6_RECEIVE)( 502 IN EFI_UDP6_PROTOCOL *This, 503 IN EFI_UDP6_COMPLETION_TOKEN *Token 504 ); 505 506 /** 507 Aborts an asynchronous transmit or receive request. 508 509 The Cancel() function is used to abort a pending transmit or receive request. If the token is in the 510 transmit or receive request queues, after calling this function, Token.Status will be set to 511 EFI_ABORTED and then Token.Event will be signaled. If the token is not in one of the queues, 512 which usually means that the asynchronous operation has completed, this function will not signal the 513 token and EFI_NOT_FOUND is returned. 514 515 @param[in] This Pointer to the EFI_UDP6_PROTOCOL instance. 516 @param[in] Token Pointer to a token that has been issued by EFI_UDP6_PROTOCOL.Transmit() 517 or EFI_UDP6_PROTOCOL.Receive().If NULL, all pending tokens are aborted. 518 519 @retval EFI_SUCCESS The asynchronous I/O request was aborted and Token.Event was signaled. 520 When Token is NULL, all pending requests are aborted and their events 521 are signaled. 522 @retval EFI_INVALID_PARAMETER This is NULL. 523 @retval EFI_NOT_STARTED This instance has not been started. 524 @retval EFI_NOT_FOUND When Token is not NULL, the asynchronous I/O request was not found in 525 the transmit or receive queue. It has either completed or was not issued 526 by Transmit() and Receive(). 527 528 **/ 529 typedef 530 EFI_STATUS 531 (EFIAPI *EFI_UDP6_CANCEL)( 532 IN EFI_UDP6_PROTOCOL *This, 533 IN EFI_UDP6_COMPLETION_TOKEN *Token OPTIONAL 534 ); 535 536 /** 537 Polls for incoming data packets and processes outgoing data packets. 538 539 The Poll() function can be used by network drivers and applications to increase the rate that data 540 packets are moved between the communications device and the transmit and receive queues. 541 In some systems, the periodic timer event in the managed network driver may not poll the underlying 542 communications device fast enough to transmit and/or receive all data packets without missing incoming 543 packets or dropping outgoing packets. Drivers and applications that are experiencing packet loss should 544 try calling the Poll() function more often. 545 546 @param[in] This Pointer to the EFI_UDP6_PROTOCOL instance. 547 548 @retval EFI_SUCCESS Incoming or outgoing data was processed. 549 @retval EFI_INVALID_PARAMETER This is NULL. 550 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. 551 @retval EFI_TIMEOUT Data was dropped out of the transmit and/or receive queue. 552 Consider increasing the polling rate. 553 554 **/ 555 typedef 556 EFI_STATUS 557 (EFIAPI *EFI_UDP6_POLL)( 558 IN EFI_UDP6_PROTOCOL *This 559 ); 560 561 /// 562 /// The EFI_UDP6_PROTOCOL defines an EFI UDPv6 Protocol session that can be used by any network drivers, 563 /// applications, or daemons to transmit or receive UDP packets. This protocol instance can either be 564 /// bound to a specified port as a service or connected to some remote peer as an active client. 565 /// Each instance has its own settings, such as group table, that are independent from each other. 566 /// 567 struct _EFI_UDP6_PROTOCOL { 568 EFI_UDP6_GET_MODE_DATA GetModeData; 569 EFI_UDP6_CONFIGURE Configure; 570 EFI_UDP6_GROUPS Groups; 571 EFI_UDP6_TRANSMIT Transmit; 572 EFI_UDP6_RECEIVE Receive; 573 EFI_UDP6_CANCEL Cancel; 574 EFI_UDP6_POLL Poll; 575 }; 576 577 extern EFI_GUID gEfiUdp6ServiceBindingProtocolGuid; 578 extern EFI_GUID gEfiUdp6ProtocolGuid; 579 580 #endif 581