1 /** @file 2 This file defines the EFI Domain Name Service Binding Protocol interface. It is split 3 into the following two main sections: 4 DNSv4 Service Binding Protocol (DNSv4SB) 5 DNSv4 Protocol (DNSv4) 6 7 Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR> 8 This program and the accompanying materials 9 are licensed and made available under the terms and conditions of the BSD License 10 which accompanies this distribution. The full text of the license may be found at 11 http://opensource.org/licenses/bsd-license.php 12 13 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 14 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 15 16 @par Revision Reference: 17 This Protocol is introduced in UEFI Specification 2.5 18 19 **/ 20 21 #ifndef __EFI_DNS4_PROTOCOL_H__ 22 #define __EFI_DNS4_PROTOCOL_H__ 23 24 #define EFI_DNS4_SERVICE_BINDING_PROTOCOL_GUID \ 25 { \ 26 0xb625b186, 0xe063, 0x44f7, {0x89, 0x5, 0x6a, 0x74, 0xdc, 0x6f, 0x52, 0xb4 } \ 27 } 28 29 #define EFI_DNS4_PROTOCOL_GUID \ 30 { \ 31 0xae3d28cc, 0xe05b, 0x4fa1, {0xa0, 0x11, 0x7e, 0xb5, 0x5a, 0x3f, 0x14, 0x1 } \ 32 } 33 34 typedef struct _EFI_DNS4_PROTOCOL EFI_DNS4_PROTOCOL; 35 36 /// 37 /// EFI_DNS4_CONFIG_DATA 38 /// 39 typedef struct { 40 /// 41 /// Count of the DNS servers. When used with GetModeData(), 42 /// this field is the count of originally configured servers when 43 /// Configure() was called for this instance. When used with 44 /// Configure() this is the count of caller-supplied servers. If the 45 /// DnsServerListCount is zero, the DNS server configuration 46 /// will be retrieved from DHCP server automatically. 47 /// 48 UINTN DnsServerListCount; 49 /// 50 /// Pointer to DNS server list containing DnsServerListCount entries or NULL 51 /// if DnsServerListCountis 0. For Configure(), this will be NULL when there are 52 /// no caller supplied server addresses, and, the DNS instance will retrieve 53 /// DNS server from DHCP Server. The provided DNS server list is 54 /// recommended to be filled up in the sequence of preference. When 55 /// used with GetModeData(), the buffer containing the list will 56 /// be allocated by the driver implementing this protocol and must be 57 /// freed by the caller. When used with Configure(), the buffer 58 /// containing the list will be allocated and released by the caller. 59 /// 60 EFI_IPv4_ADDRESS *DnsServerList; 61 /// 62 /// Set to TRUE to use the default IP address/subnet mask and default routing table. 63 /// 64 BOOLEAN UseDefaultSetting; 65 /// 66 /// If TRUE, enable DNS cache function for this DNS instance. If FALSE, all DNS 67 /// query will not lookup local DNS cache. 68 /// 69 BOOLEAN EnableDnsCache; 70 /// 71 /// Use the protocol number defined in "Links to UEFI-Related 72 /// Documents"(http://uefi.org/uefi) under the heading "IANA 73 /// Protocol Numbers". Only TCP or UDP are supported, and other 74 /// protocol values are invalid. An implementation can choose to 75 /// support only UDP, or both TCP and UDP. 76 /// 77 UINT8 Protocol; 78 /// 79 /// If UseDefaultSetting is FALSE indicates the station address to use. 80 /// 81 EFI_IPv4_ADDRESS StationIp; 82 /// 83 /// If UseDefaultSetting is FALSE indicates the subnet mask to use. 84 /// 85 EFI_IPv4_ADDRESS SubnetMask; 86 /// 87 /// Local port number. Set to zero to use the automatically assigned port number. 88 /// 89 UINT16 LocalPort; 90 /// 91 /// Retry number if no response received after RetryInterval. 92 /// 93 UINT32 RetryCount; 94 /// 95 /// Minimum interval of retry is 2 second. If the retry interval is less than 2 96 /// seconds, then use the 2 seconds. 97 /// 98 UINT32 RetryInterval; 99 } EFI_DNS4_CONFIG_DATA; 100 101 102 /// 103 /// EFI_DNS4_CACHE_ENTRY 104 /// 105 typedef struct { 106 /// 107 /// Host name. 108 /// 109 CHAR16 *HostName; 110 /// 111 /// IP address of this host. 112 /// 113 EFI_IPv4_ADDRESS *IpAddress; 114 /// 115 /// Time in second unit that this entry will remain in DNS cache. A value of zero 116 /// means that this entry is permanent. A nonzero value will override the existing 117 /// one if this entry to be added is dynamic entry. Implementations may set its 118 /// default timeout value for the dynamically created DNS cache entry after one DNS 119 /// resolve succeeds. 120 /// 121 UINT32 Timeout; 122 } EFI_DNS4_CACHE_ENTRY; 123 124 /// 125 /// EFI_DNS4_MODE_DATA 126 /// 127 typedef struct { 128 /// 129 /// The configuration data of this instance. 130 /// 131 EFI_DNS4_CONFIG_DATA DnsConfigData; 132 /// 133 /// Number of configured DNS server. Each DNS instance has its own DNS server 134 /// configuration. 135 /// 136 UINT32 DnsServerCount; 137 /// 138 /// Pointer to common list of addresses of all configured DNS server 139 /// used by EFI_DNS4_PROTOCOL instances. List will include 140 /// DNS servers configured by this or any other EFI_DNS4_PROTOCOL instance. 141 /// The storage for this list is allocated by the driver publishing this 142 /// protocol, and must be freed by the caller. 143 /// 144 EFI_IPv4_ADDRESS *DnsServerList; 145 /// 146 /// Number of DNS Cache entries. The DNS Cache is shared among all DNS instances. 147 /// 148 UINT32 DnsCacheCount; 149 /// 150 /// Pointer to a buffer containing DnsCacheCount DNS Cache 151 /// entry structures. The storage for this list is allocated by the driver 152 /// publishing this protocol and must be freed by caller. 153 /// 154 EFI_DNS4_CACHE_ENTRY *DnsCacheList; 155 } EFI_DNS4_MODE_DATA; 156 157 /// 158 /// DNS_HOST_TO_ADDR_DATA 159 /// 160 typedef struct { 161 /// 162 /// Number of the returned IP addresses. 163 /// 164 UINT32 IpCount; 165 /// 166 /// Pointer to the all the returned IP addresses. 167 /// 168 EFI_IPv4_ADDRESS *IpList; 169 } DNS_HOST_TO_ADDR_DATA; 170 171 /// 172 /// DNS_ADDR_TO_HOST_DATA 173 /// 174 typedef struct { 175 /// 176 /// Pointer to the primary name for this host address. It's the caller's 177 /// responsibility to free the response memory. 178 /// 179 CHAR16 *HostName; 180 } DNS_ADDR_TO_HOST_DATA; 181 182 /// 183 /// DNS_RESOURCE_RECORD 184 /// 185 typedef struct { 186 /// 187 /// The Owner name. 188 /// 189 CHAR8 *QName; 190 /// 191 /// The Type Code of this RR. 192 /// 193 UINT16 QType; 194 /// 195 /// The CLASS code of this RR. 196 /// 197 UINT16 QClass; 198 /// 199 /// 32 bit integer which specify the time interval that the resource record may be 200 /// cached before the source of the information should again be consulted. Zero means 201 /// this RR can not be cached. 202 /// 203 UINT32 TTL; 204 /// 205 /// 16 big integer which specify the length of RData. 206 /// 207 UINT16 DataLength; 208 /// 209 /// A string of octets that describe the resource, the format of this information 210 /// varies according to QType and QClass difference. 211 /// 212 CHAR8 *RData; 213 } DNS_RESOURCE_RECORD; 214 215 /// 216 /// DNS_GENERAL_LOOKUP_DATA 217 /// 218 typedef struct { 219 /// 220 /// Number of returned matching RRs. 221 /// 222 UINTN RRCount; 223 /// 224 /// Pointer to the all the returned matching RRs. It's caller responsibility to free 225 /// the allocated memory to hold the returned RRs. 226 /// 227 DNS_RESOURCE_RECORD *RRList; 228 } DNS_GENERAL_LOOKUP_DATA; 229 230 /// 231 /// EFI_DNS4_COMPLETION_TOKEN 232 /// 233 typedef struct { 234 /// 235 /// This Event will be signaled after the Status field is updated by the EFI DNS 236 /// protocol driver. The type of Event must be EFI_NOTIFY_SIGNAL. 237 /// 238 EFI_EVENT Event; 239 /// 240 /// Will be set to one of the following values: 241 /// EFI_SUCCESS: The host name to address translation completed successfully. 242 /// EFI_NOT_FOUND: No matching Resource Record (RR) is found. 243 /// EFI_TIMEOUT: No DNS server reachable, or RetryCount was exhausted without 244 /// response from all specified DNS servers. 245 /// EFI_DEVICE_ERROR: An unexpected system or network error occurred. 246 /// EFI_NO_MEDIA: There was a media error. 247 /// 248 EFI_STATUS Status; 249 /// 250 /// Retry number if no response received after RetryInterval. If zero, use the 251 /// parameter configured through Dns.Configure() interface. 252 /// 253 UINT32 RetryCount; 254 /// 255 /// Minimum interval of retry is 2 second. If the retry interval is less than 2 256 /// seconds, then use the 2 seconds. If zero, use the parameter configured through 257 /// Dns.Configure() interface. 258 UINT32 RetryInterval; 259 /// 260 /// DNSv4 completion token data 261 /// 262 union { 263 /// 264 /// When the Token is used for host name to address translation, H2AData is a pointer 265 /// to the DNS_HOST_TO_ADDR_DATA. 266 /// 267 DNS_HOST_TO_ADDR_DATA *H2AData; 268 /// 269 /// When the Token is used for host address to host name translation, A2HData is a 270 /// pointer to the DNS_ADDR_TO_HOST_DATA. 271 /// 272 DNS_ADDR_TO_HOST_DATA *A2HData; 273 /// 274 /// When the Token is used for a general lookup function, GLookupDATA is a pointer to 275 /// the DNS_GENERAL_LOOKUP_DATA. 276 /// 277 DNS_GENERAL_LOOKUP_DATA *GLookupData; 278 } RspData; 279 } EFI_DNS4_COMPLETION_TOKEN; 280 281 /** 282 Retrieve mode data of this DNS instance. 283 284 This function is used to retrieve DNS mode data for this DNS instance. 285 286 @param[in] This Pointer to EFI_DNS4_PROTOCOL instance. 287 @param[out] DnsModeData Point to the mode data. 288 289 @retval EFI_SUCCESS The operation completed successfully. 290 @retval EFI_NOT_STARTED When DnsConfigData is queried, no configuration data 291 is available because this instance has not been 292 configured. 293 @retval EFI_INVALID_PARAMETER This is NULL or DnsModeData is NULL. 294 @retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources. 295 **/ 296 typedef 297 EFI_STATUS 298 (EFIAPI *EFI_DNS4_GET_MODE_DATA) ( 299 IN EFI_DNS4_PROTOCOL *This, 300 OUT EFI_DNS4_MODE_DATA *DnsModeData 301 ); 302 303 /** 304 Configure this DNS instance. 305 306 This function is used to configure DNS mode data for this DNS instance. 307 308 @param[in] This Pointer to EFI_DNS4_PROTOCOL instance. 309 @param[in] DnsConfigData Point to the Configuration data. 310 311 @retval EFI_SUCCESS The operation completed successfully. 312 @retval EFI_UNSUPPORTED The designated protocol is not supported. 313 @retval EFI_INVALID_PARAMETER This is NULL. 314 The StationIp address provided in DnsConfigData is not a 315 valid unicast. 316 DnsServerList is NULL while DnsServerListCount 317 is not ZERO. 318 DnsServerListCount is ZERO while DnsServerList 319 is not NULL 320 @retval EFI_OUT_OF_RESOURCES The DNS instance data or required space could not be 321 allocated. 322 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. The 323 EFI DNSv4 Protocol instance is not configured. 324 @retval EFI_ALREADY_STARTED Second call to Configure() with DnsConfigData. To 325 reconfigure the instance the caller must call Configure() 326 with NULL first to return driver to unconfigured state. 327 **/ 328 typedef 329 EFI_STATUS 330 (EFIAPI *EFI_DNS4_CONFIGURE) ( 331 IN EFI_DNS4_PROTOCOL *This, 332 IN EFI_DNS4_CONFIG_DATA *DnsConfigData 333 ); 334 335 /** 336 Host name to host address translation. 337 338 The HostNameToIp () function is used to translate the host name to host IP address. A 339 type A query is used to get the one or more IP addresses for this host. 340 341 @param[in] This Pointer to EFI_DNS4_PROTOCOL instance. 342 @param[in] HostName Host name. 343 @param[in] Token Point to the completion token to translate host name 344 to host address. 345 346 @retval EFI_SUCCESS The operation completed successfully. 347 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: 348 This is NULL. 349 Token is NULL. 350 Token.Event is NULL. 351 HostName is NULL. HostName string is unsupported format. 352 @retval EFI_NO_MAPPING There's no source address is available for use. 353 @retval EFI_NOT_STARTED This instance has not been started. 354 **/ 355 typedef 356 EFI_STATUS 357 (EFIAPI *EFI_DNS4_HOST_NAME_TO_IP) ( 358 IN EFI_DNS4_PROTOCOL *This, 359 IN CHAR16 *HostName, 360 IN EFI_DNS4_COMPLETION_TOKEN *Token 361 ); 362 363 /** 364 IPv4 address to host name translation also known as Reverse DNS lookup. 365 366 The IpToHostName() function is used to translate the host address to host name. A type PTR 367 query is used to get the primary name of the host. Support of this function is optional. 368 369 @param[in] This Pointer to EFI_DNS4_PROTOCOL instance. 370 @param[in] IpAddress Ip Address. 371 @param[in] Token Point to the completion token to translate host 372 address to host name. 373 374 @retval EFI_SUCCESS The operation completed successfully. 375 @retval EFI_UNSUPPORTED This function is not supported. 376 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: 377 This is NULL. 378 Token is NULL. 379 Token.Event is NULL. 380 IpAddress is not valid IP address . 381 @retval EFI_NO_MAPPING There's no source address is available for use. 382 @retval EFI_ALREADY_STARTED This Token is being used in another DNS session. 383 @retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources. 384 **/ 385 typedef 386 EFI_STATUS 387 (EFIAPI *EFI_DNS4_IP_TO_HOST_NAME) ( 388 IN EFI_DNS4_PROTOCOL *This, 389 IN EFI_IPv4_ADDRESS IpAddress, 390 IN EFI_DNS4_COMPLETION_TOKEN *Token 391 ); 392 393 /** 394 Retrieve arbitrary information from the DNS server. 395 396 This GeneralLookup() function retrieves arbitrary information from the DNS. The caller 397 supplies a QNAME, QTYPE, and QCLASS, and all of the matching RRs are returned. All 398 RR content (e.g., TTL) was returned. The caller need parse the returned RR to get 399 required information. The function is optional. 400 401 @param[in] This Pointer to EFI_DNS4_PROTOCOL instance. 402 @param[in] QName Pointer to Query Name. 403 @param[in] QType Query Type. 404 @param[in] QClass Query Name. 405 @param[in] Token Point to the completion token to retrieve arbitrary 406 information. 407 408 @retval EFI_SUCCESS The operation completed successfully. 409 @retval EFI_UNSUPPORTED This function is not supported. Or the requested 410 QType is not supported 411 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: 412 This is NULL. 413 Token is NULL. 414 Token.Event is NULL. 415 QName is NULL. 416 @retval EFI_NO_MAPPING There's no source address is available for use. 417 @retval EFI_ALREADY_STARTED This Token is being used in another DNS session. 418 @retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources. 419 **/ 420 typedef 421 EFI_STATUS 422 (EFIAPI *EFI_DNS4_GENERAL_LOOKUP) ( 423 IN EFI_DNS4_PROTOCOL *This, 424 IN CHAR8 *QName, 425 IN UINT16 QType, 426 IN UINT16 QClass, 427 IN EFI_DNS4_COMPLETION_TOKEN *Token 428 ); 429 430 /** 431 This function is to update the DNS Cache. 432 433 The UpdateDnsCache() function is used to add/delete/modify DNS cache entry. DNS cache 434 can be normally dynamically updated after the DNS resolve succeeds. This function 435 provided capability to manually add/delete/modify the DNS cache. 436 437 @param[in] This Pointer to EFI_DNS4_PROTOCOL instance. 438 @param[in] DeleteFlag If FALSE, this function is to add one entry to the 439 DNS Cahce. If TRUE, this function will delete 440 matching DNS Cache entry. 441 @param[in] Override If TRUE, the maching DNS cache entry will be 442 overwritten with the supplied parameter. If FALSE, 443 EFI_ACCESS_DENIED will be returned if the entry to 444 be added is already existed. 445 @param[in] DnsCacheEntry Pointer to DNS Cache entry. 446 447 @retval EFI_SUCCESS The operation completed successfully. 448 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: 449 This is NULL. 450 DnsCacheEntry.HostName is NULL. 451 DnsCacheEntry.IpAddress is NULL. 452 DnsCacheEntry.Timeout is zero. 453 @retval EFI_ACCESS_DENIED The DNS cache entry already exists and Override is 454 not TRUE. 455 **/ 456 typedef 457 EFI_STATUS 458 (EFIAPI *EFI_DNS4_UPDATE_DNS_CACHE) ( 459 IN EFI_DNS4_PROTOCOL *This, 460 IN BOOLEAN DeleteFlag, 461 IN BOOLEAN Override, 462 IN EFI_DNS4_CACHE_ENTRY DnsCacheEntry 463 ); 464 465 /** 466 Polls for incoming data packets and processes outgoing data packets. 467 468 The Poll() function can be used by network drivers and applications to increase the 469 rate that data packets are moved between the communications device and the transmit 470 and receive queues. 471 In some systems, the periodic timer event in the managed network driver may not poll 472 the underlying communications device fast enough to transmit and/or receive all data 473 packets without missing incoming packets or dropping outgoing packets. Drivers and 474 applications that are experiencing packet loss should try calling the Poll() 475 function more often. 476 477 @param[in] This Pointer to EFI_DNS4_PROTOCOL instance. 478 479 @retval EFI_SUCCESS Incoming or outgoing data was processed. 480 @retval EFI_NOT_STARTED This EFI DNS Protocol instance has not been started. 481 @retval EFI_INVALID_PARAMETER This is NULL. 482 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. 483 @retval EFI_TIMEOUT Data was dropped out of the transmit and/or receive 484 queue. Consider increasing the polling rate. 485 **/ 486 typedef 487 EFI_STATUS 488 (EFIAPI *EFI_DNS4_POLL) ( 489 IN EFI_DNS4_PROTOCOL *This 490 ); 491 492 /** 493 Abort an asynchronous DNS operation, including translation between IP and Host, and 494 general look up behavior. 495 496 The Cancel() function is used to abort a pending resolution request. After calling 497 this function, Token.Status will be set to EFI_ABORTED and then Token.Event will be 498 signaled. If the token is not in one of the queues, which usually means that the 499 asynchronous operation has completed, this function will not signal the token and 500 EFI_NOT_FOUND is returned. 501 502 @param[in] This Pointer to EFI_DNS4_PROTOCOL instance. 503 @param[in] Token Pointer to a token that has been issued by 504 EFI_DNS4_PROTOCOL.HostNameToIp (), 505 EFI_DNS4_PROTOCOL.IpToHostName() or 506 EFI_DNS4_PROTOCOL.GeneralLookup(). 507 If NULL, all pending tokens are aborted. 508 509 @retval EFI_SUCCESS Incoming or outgoing data was processed. 510 @retval EFI_NOT_STARTED This EFI DNS4 Protocol instance has not been started. 511 @retval EFI_INVALID_PARAMETER This is NULL. 512 @retval EFI_NOT_FOUND When Token is not NULL, and the asynchronous DNS 513 operation was not found in the transmit queue. It 514 was either completed or was not issued by 515 HostNameToIp(), IpToHostName() or GeneralLookup(). 516 **/ 517 typedef 518 EFI_STATUS 519 (EFIAPI *EFI_DNS4_CANCEL) ( 520 IN EFI_DNS4_PROTOCOL *This, 521 IN EFI_DNS4_COMPLETION_TOKEN *Token 522 ); 523 524 /// 525 /// The EFI_DNS4_Protocol provides the function to get the host name and address 526 /// mapping, also provides pass through interface to retrieve arbitrary information 527 /// from DNS. 528 /// 529 struct _EFI_DNS4_PROTOCOL { 530 EFI_DNS4_GET_MODE_DATA GetModeData; 531 EFI_DNS4_CONFIGURE Configure; 532 EFI_DNS4_HOST_NAME_TO_IP HostNameToIp; 533 EFI_DNS4_IP_TO_HOST_NAME IpToHostName; 534 EFI_DNS4_GENERAL_LOOKUP GeneralLookUp; 535 EFI_DNS4_UPDATE_DNS_CACHE UpdateDnsCache; 536 EFI_DNS4_POLL Poll; 537 EFI_DNS4_CANCEL Cancel; 538 }; 539 540 extern EFI_GUID gEfiDns4ServiceBindingProtocolGuid; 541 extern EFI_GUID gEfiDns4ProtocolGuid; 542 543 #endif 544