1 /** @file 2 Implementation of EFI_IP6_PROTOCOL protocol interfaces and type definitions. 3 4 Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR> 5 (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR> 6 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 **/ 16 17 #ifndef __EFI_IP6_IMPL_H__ 18 #define __EFI_IP6_IMPL_H__ 19 20 #include <Uefi.h> 21 22 #include <IndustryStandard/Dhcp.h> 23 24 #include <Protocol/ServiceBinding.h> 25 #include <Protocol/ManagedNetwork.h> 26 #include <Protocol/IpSec.h> 27 #include <Protocol/Ip6.h> 28 #include <Protocol/Ip6Config.h> 29 #include <Protocol/Dhcp6.h> 30 #include <Protocol/DevicePath.h> 31 #include <Protocol/HiiConfigRouting.h> 32 #include <Protocol/HiiConfigAccess.h> 33 34 #include <Library/DebugLib.h> 35 #include <Library/UefiBootServicesTableLib.h> 36 #include <Library/UefiRuntimeServicesTableLib.h> 37 #include <Library/BaseLib.h> 38 #include <Library/UefiLib.h> 39 #include <Library/NetLib.h> 40 #include <Library/BaseMemoryLib.h> 41 #include <Library/MemoryAllocationLib.h> 42 #include <Library/DpcLib.h> 43 #include <Library/HiiLib.h> 44 #include <Library/UefiHiiServicesLib.h> 45 #include <Library/DevicePathLib.h> 46 #include <Library/PrintLib.h> 47 48 #include <Guid/MdeModuleHii.h> 49 50 #include "Ip6Common.h" 51 #include "Ip6Driver.h" 52 #include "Ip6Icmp.h" 53 #include "Ip6If.h" 54 #include "Ip6Input.h" 55 #include "Ip6Mld.h" 56 #include "Ip6Nd.h" 57 #include "Ip6Option.h" 58 #include "Ip6Output.h" 59 #include "Ip6Route.h" 60 #include "Ip6ConfigNv.h" 61 #include "Ip6ConfigImpl.h" 62 63 #define IP6_PROTOCOL_SIGNATURE SIGNATURE_32 ('I', 'P', '6', 'P') 64 #define IP6_SERVICE_SIGNATURE SIGNATURE_32 ('I', 'P', '6', 'S') 65 66 // 67 // The state of IP6 protocol. It starts from UNCONFIGED. if it is 68 // successfully configured, it goes to CONFIGED. if configure NULL 69 // is called, it becomes UNCONFIGED again. If (partly) destroyed, it 70 // becomes DESTROY. 71 // 72 #define IP6_STATE_UNCONFIGED 0 73 #define IP6_STATE_CONFIGED 1 74 75 // 76 // The state of IP6 service. It starts from UNSTARTED. It transits 77 // to STARTED if autoconfigure is started. If default address is 78 // configured, it becomes CONFIGED. and if partly destroyed, it goes 79 // to DESTROY. 80 // 81 #define IP6_SERVICE_UNSTARTED 0 82 #define IP6_SERVICE_STARTED 1 83 #define IP6_SERVICE_CONFIGED 2 84 #define IP6_SERVICE_DESTROY 3 85 86 #define IP6_INSTANCE_FROM_PROTOCOL(Ip6) \ 87 CR ((Ip6), IP6_PROTOCOL, Ip6Proto, IP6_PROTOCOL_SIGNATURE) 88 89 #define IP6_SERVICE_FROM_PROTOCOL(Sb) \ 90 CR ((Sb), IP6_SERVICE, ServiceBinding, IP6_SERVICE_SIGNATURE) 91 92 #define IP6_NO_MAPPING(IpInstance) (!(IpInstance)->Interface->Configured) 93 94 extern EFI_IPSEC2_PROTOCOL *mIpSec; 95 extern BOOLEAN mIpSec2Installed; 96 97 // 98 // IP6_TXTOKEN_WRAP wraps the upper layer's transmit token. 99 // The user's data is kept in the Packet. When fragment is 100 // needed, each fragment of the Packet has a reference to the 101 // Packet, no data is actually copied. The Packet will be 102 // released when all the fragments of it have been recycled by 103 // MNP. Upon then, the IP6_TXTOKEN_WRAP will be released, and 104 // user's event signalled. 105 // 106 typedef struct { 107 IP6_PROTOCOL *IpInstance; 108 EFI_IP6_COMPLETION_TOKEN *Token; 109 EFI_EVENT IpSecRecycleSignal; 110 NET_BUF *Packet; 111 BOOLEAN Sent; 112 INTN Life; 113 } IP6_TXTOKEN_WRAP; 114 115 typedef struct { 116 EFI_EVENT IpSecRecycleSignal; 117 NET_BUF *Packet; 118 } IP6_IPSEC_WRAP; 119 120 // 121 // IP6_RXDATA_WRAP wraps the data IP6 child delivers to the 122 // upper layers. The received packet is kept in the Packet. 123 // The Packet itself may be constructured from some fragments. 124 // All the fragments of the Packet is organized by a 125 // IP6_ASSEMBLE_ENTRY structure. If the Packet is recycled by 126 // the upper layer, the assemble entry and its associated 127 // fragments will be freed at last. 128 // 129 typedef struct { 130 LIST_ENTRY Link; 131 IP6_PROTOCOL *IpInstance; 132 NET_BUF *Packet; 133 EFI_IP6_RECEIVE_DATA RxData; 134 } IP6_RXDATA_WRAP; 135 136 struct _IP6_PROTOCOL { 137 UINT32 Signature; 138 139 EFI_IP6_PROTOCOL Ip6Proto; 140 EFI_HANDLE Handle; 141 INTN State; 142 143 IP6_SERVICE *Service; 144 LIST_ENTRY Link; // Link to all the IP protocol from the service 145 146 UINT8 PrefixLength; // PrefixLength of the configured station address. 147 // 148 // User's transmit/receive tokens, and received/deliverd packets 149 // 150 NET_MAP RxTokens; 151 NET_MAP TxTokens; // map between (User's Token, IP6_TXTOKE_WRAP) 152 LIST_ENTRY Received; // Received but not delivered packet 153 LIST_ENTRY Delivered; // Delivered and to be recycled packets 154 EFI_LOCK RecycleLock; 155 156 IP6_INTERFACE *Interface; 157 LIST_ENTRY AddrLink; // Ip instances with the same IP address. 158 159 EFI_IPv6_ADDRESS *GroupList; // stored in network order. 160 UINT32 GroupCount; 161 162 EFI_IP6_CONFIG_DATA ConfigData; 163 BOOLEAN InDestroy; 164 }; 165 166 struct _IP6_SERVICE { 167 UINT32 Signature; 168 EFI_SERVICE_BINDING_PROTOCOL ServiceBinding; 169 INTN State; 170 171 // 172 // List of all the IP instances and interfaces, and default 173 // interface and route table and caches. 174 // 175 UINTN NumChildren; 176 LIST_ENTRY Children; 177 178 LIST_ENTRY Interfaces; 179 180 IP6_INTERFACE *DefaultInterface; 181 IP6_ROUTE_TABLE *RouteTable; 182 183 IP6_LINK_RX_TOKEN RecvRequest; 184 185 // 186 // Ip reassemble utilities and MLD data 187 // 188 IP6_ASSEMBLE_TABLE Assemble; 189 IP6_MLD_SERVICE_DATA MldCtrl; 190 191 EFI_IPv6_ADDRESS LinkLocalAddr; 192 BOOLEAN LinkLocalOk; 193 BOOLEAN LinkLocalDadFail; 194 BOOLEAN Dhcp6NeedStart; 195 BOOLEAN Dhcp6NeedInfoRequest; 196 197 // 198 // ND data 199 // 200 UINT8 CurHopLimit; 201 UINT32 LinkMTU; 202 UINT32 BaseReachableTime; 203 UINT32 ReachableTime; 204 UINT32 RetransTimer; 205 LIST_ENTRY NeighborTable; 206 207 LIST_ENTRY OnlinkPrefix; 208 LIST_ENTRY AutonomousPrefix; 209 210 LIST_ENTRY DefaultRouterList; 211 UINT32 RoundRobin; 212 213 UINT8 InterfaceIdLen; 214 UINT8 *InterfaceId; 215 216 BOOLEAN RouterAdvertiseReceived; 217 UINT8 SolicitTimer; 218 UINT32 Ticks; 219 220 // 221 // Low level protocol used by this service instance 222 // 223 EFI_HANDLE Image; 224 EFI_HANDLE Controller; 225 226 EFI_HANDLE MnpChildHandle; 227 EFI_MANAGED_NETWORK_PROTOCOL *Mnp; 228 229 EFI_MANAGED_NETWORK_CONFIG_DATA MnpConfigData; 230 EFI_SIMPLE_NETWORK_MODE SnpMode; 231 232 EFI_EVENT Timer; 233 EFI_EVENT FasterTimer; 234 235 // 236 // IPv6 Configuration Protocol instance 237 // 238 IP6_CONFIG_INSTANCE Ip6ConfigInstance; 239 240 // 241 // The string representation of the current mac address of the 242 // NIC this IP6_SERVICE works on. 243 // 244 CHAR16 *MacString; 245 UINT32 MaxPacketSize; 246 UINT32 OldMaxPacketSize; 247 }; 248 249 /** 250 The callback function for the net buffer which wraps the user's 251 transmit token. Although this function seems simple, 252 there are some subtle aspects. 253 When a user requests the IP to transmit a packet by passing it a 254 token, the token is wrapped in an IP6_TXTOKEN_WRAP and the data 255 is wrapped in a net buffer. The net buffer's Free function is 256 set to Ip6FreeTxToken. The Token and token wrap are added to the 257 IP child's TxToken map. Then the buffer is passed to Ip6Output for 258 transmission. If an error occurs before that, the buffer 259 is freed, which in turn frees the token wrap. The wrap may 260 have been added to the TxToken map or not, and the user's event 261 shouldn't be signaled because we are still in the EfiIp6Transmit. If 262 the buffer has been sent by Ip6Output, it should be removed from 263 the TxToken map and the user's event signaled. The token wrap and buffer 264 are bound together. Refer to the comments in Ip6Output for information 265 about IP fragmentation. 266 267 @param[in] Context The token's wrap. 268 269 **/ 270 VOID 271 EFIAPI 272 Ip6FreeTxToken ( 273 IN VOID *Context 274 ); 275 276 /** 277 Config the MNP parameter used by IP. The IP driver use one MNP 278 child to transmit/receive frames. By default, it configures MNP 279 to receive unicast/multicast/broadcast. And it will enable/disable 280 the promiscuous receive according to whether there is IP child 281 enable that or not. If Force is FALSE, it will iterate through 282 all the IP children to check whether the promiscuous receive 283 setting has been changed. If it hasn't been changed, it won't 284 reconfigure the MNP. If Force is TRUE, the MNP is configured 285 whether that is changed or not. 286 287 @param[in] IpSb The IP6 service instance that is to be changed. 288 @param[in] Force Force the configuration or not. 289 290 @retval EFI_SUCCESS The MNP successfully configured/reconfigured. 291 @retval Others The configuration failed. 292 293 **/ 294 EFI_STATUS 295 Ip6ServiceConfigMnp ( 296 IN IP6_SERVICE *IpSb, 297 IN BOOLEAN Force 298 ); 299 300 /** 301 Cancel the user's receive/transmit request. It is the worker function of 302 EfiIp6Cancel API. 303 304 @param[in] IpInstance The IP6 child. 305 @param[in] Token The token to cancel. If NULL, all tokens will be 306 cancelled. 307 308 @retval EFI_SUCCESS The token was cancelled. 309 @retval EFI_NOT_FOUND The token isn't found on either the 310 transmit or receive queue. 311 @retval EFI_DEVICE_ERROR Not all tokens are cancelled when Token is NULL. 312 313 **/ 314 EFI_STATUS 315 Ip6Cancel ( 316 IN IP6_PROTOCOL *IpInstance, 317 IN EFI_IP6_COMPLETION_TOKEN *Token OPTIONAL 318 ); 319 320 /** 321 Initialize the IP6_PROTOCOL structure to the unconfigured states. 322 323 @param[in] IpSb The IP6 service instance. 324 @param[in, out] IpInstance The IP6 child instance. 325 326 **/ 327 VOID 328 Ip6InitProtocol ( 329 IN IP6_SERVICE *IpSb, 330 IN OUT IP6_PROTOCOL *IpInstance 331 ); 332 333 /** 334 Clean up the IP6 child, release all the resources used by it. 335 336 @param[in, out] IpInstance The IP6 child to clean up. 337 338 @retval EFI_SUCCESS The IP6 child was cleaned up 339 @retval EFI_DEVICE_ERROR Some resources failed to be released. 340 341 **/ 342 EFI_STATUS 343 Ip6CleanProtocol ( 344 IN OUT IP6_PROTOCOL *IpInstance 345 ); 346 347 // 348 // EFI_IP6_PROTOCOL interface prototypes 349 // 350 351 /** 352 Gets the current operational settings for this instance of the EFI IPv6 Protocol driver. 353 354 The GetModeData() function returns the current operational mode data for this driver instance. 355 The data fields in EFI_IP6_MODE_DATA are read only. This function is used optionally to 356 retrieve the operational mode data of underlying networks or drivers. 357 358 @param[in] This The pointer to the EFI_IP6_PROTOCOL instance. 359 @param[out] Ip6ModeData The pointer to the EFI IPv6 Protocol mode data structure. 360 @param[out] MnpConfigData The pointer to the managed network configuration data structure. 361 @param[out] SnpModeData The pointer to the simple network mode data structure. 362 363 @retval EFI_SUCCESS The operation completed successfully. 364 @retval EFI_INVALID_PARAMETER This is NULL. 365 @retval EFI_OUT_OF_RESOURCES The required mode data could not be allocated. 366 367 **/ 368 EFI_STATUS 369 EFIAPI 370 EfiIp6GetModeData ( 371 IN EFI_IP6_PROTOCOL *This, 372 OUT EFI_IP6_MODE_DATA *Ip6ModeData OPTIONAL, 373 OUT EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData OPTIONAL, 374 OUT EFI_SIMPLE_NETWORK_MODE *SnpModeData OPTIONAL 375 ); 376 377 /** 378 Assigns an IPv6 address and subnet mask to this EFI IPv6 Protocol driver instance. 379 380 The Configure() function is used to set, change, or reset the operational parameters and filter 381 settings for this EFI IPv6 Protocol instance. Until these parameters have been set, no network traffic 382 can be sent or received by this instance. Once the parameters have been reset (by calling this 383 function with Ip6ConfigData set to NULL), no more traffic can be sent or received until these 384 parameters have been set again. Each EFI IPv6 Protocol instance can be started and stopped 385 independently of each other by enabling or disabling their receive filter settings with the 386 Configure() function. 387 388 If Ip6ConfigData.StationAddress is a valid non-zero IPv6 unicast address, it is required 389 to be one of the currently configured IPv6 addresses list in the EFI IPv6 drivers, or else 390 EFI_INVALID_PARAMETER will be returned. If Ip6ConfigData.StationAddress is 391 unspecified, the IPv6 driver will bind a source address according to the source address selection 392 algorithm. Clients could frequently call GetModeData() to check get a currently configured IPv6. 393 If both Ip6ConfigData.StationAddress and Ip6ConfigData.Destination are unspecified, when 394 transmitting the packet afterwards, the source address filled in each outgoing IPv6 packet 395 is decided based on the destination of this packet. 396 397 If operational parameters are reset or changed, any pending transmit and receive requests will be 398 cancelled. Their completion token status will be set to EFI_ABORTED, and their events will be 399 signaled. 400 401 @param[in] This The pointer to the EFI_IP6_PROTOCOL instance. 402 @param[in] Ip6ConfigData The pointer to the EFI IPv6 Protocol configuration data structure. 403 If NULL, reset the configuration data. 404 405 @retval EFI_SUCCESS The driver instance was successfully opened. 406 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: 407 - This is NULL. 408 - Ip6ConfigData.StationAddress is neither zero nor 409 a unicast IPv6 address. 410 - Ip6ConfigData.StationAddress is neither zero nor 411 one of the configured IP addresses in the EFI IPv6 driver. 412 - Ip6ConfigData.DefaultProtocol is illegal. 413 @retval EFI_OUT_OF_RESOURCES The EFI IPv6 Protocol driver instance data could not be allocated. 414 @retval EFI_NO_MAPPING The IPv6 driver was responsible for choosing a source address for 415 this instance, but no source address was available for use. 416 @retval EFI_ALREADY_STARTED The interface is already open and must be stopped before the IPv6 417 address or prefix length can be changed. 418 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. The EFI IPv6 419 Protocol driver instance was not opened. 420 @retval EFI_UNSUPPORTED Default protocol specified through 421 Ip6ConfigData.DefaulProtocol isn't supported. 422 423 **/ 424 EFI_STATUS 425 EFIAPI 426 EfiIp6Configure ( 427 IN EFI_IP6_PROTOCOL *This, 428 IN EFI_IP6_CONFIG_DATA *Ip6ConfigData OPTIONAL 429 ); 430 431 /** 432 Joins and leaves multicast groups. 433 434 The Groups() function is used to join and leave multicast group sessions. Joining a group will 435 enable reception of matching multicast packets. Leaving a group will disable reception of matching 436 multicast packets. Source-Specific Multicast isn't required to be supported. 437 438 If JoinFlag is FALSE and GroupAddress is NULL, all joined groups will be left. 439 440 @param[in] This The pointer to the EFI_IP6_PROTOCOL instance. 441 @param[in] JoinFlag Set to TRUE to join the multicast group session and FALSE to leave. 442 @param[in] GroupAddress The pointer to the IPv6 multicast address. 443 This is an optional parameter that may be NULL. 444 445 @retval EFI_SUCCESS The operation completed successfully. 446 @retval EFI_INVALID_PARAMETER One or more of the following is TRUE: 447 - This is NULL. 448 - JoinFlag is TRUE and GroupAddress is NULL. 449 - GroupAddress is not NULL and *GroupAddress is 450 not a multicast IPv6 address. 451 - GroupAddress is not NULL and *GroupAddress is in the 452 range of SSM destination address. 453 @retval EFI_NOT_STARTED This instance has not been started. 454 @retval EFI_OUT_OF_RESOURCES System resources could not be allocated. 455 @retval EFI_UNSUPPORTED This EFI IPv6 Protocol implementation does not support multicast groups. 456 @retval EFI_ALREADY_STARTED The group address is already in the group table (when 457 JoinFlag is TRUE). 458 @retval EFI_NOT_FOUND The group address is not in the group table (when JoinFlag is FALSE). 459 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. 460 461 **/ 462 EFI_STATUS 463 EFIAPI 464 EfiIp6Groups ( 465 IN EFI_IP6_PROTOCOL *This, 466 IN BOOLEAN JoinFlag, 467 IN EFI_IPv6_ADDRESS *GroupAddress OPTIONAL 468 ); 469 470 /** 471 Adds and deletes routing table entries. 472 473 The Routes() function adds a route to or deletes a route from the routing table. 474 475 Routes are determined by comparing the leftmost PrefixLength bits of Destination with 476 the destination IPv6 address arithmetically. The gateway address must be on the same subnet as the 477 configured station address. 478 479 The default route is added with Destination and PrefixLegth both set to all zeros. The 480 default route matches all destination IPv6 addresses that do not match any other routes. 481 482 All EFI IPv6 Protocol instances share a routing table. 483 484 @param[in] This The pointer to the EFI_IP6_PROTOCOL instance. 485 @param[in] DeleteRoute Set to TRUE to delete this route from the routing table. Set to 486 FALSE to add this route to the routing table. Destination, 487 PrefixLength and Gateway are used as the key to each 488 route entry. 489 @param[in] Destination The address prefix of the subnet that needs to be routed. 490 This is an optional parameter that may be NULL. 491 @param[in] PrefixLength The prefix length of Destination. Ignored if Destination 492 is NULL. 493 @param[in] GatewayAddress The unicast gateway IPv6 address for this route. 494 This is an optional parameter that may be NULL. 495 496 @retval EFI_SUCCESS The operation completed successfully. 497 @retval EFI_NOT_STARTED The driver instance has not been started. 498 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: 499 - This is NULL. 500 - When DeleteRoute is TRUE, both Destination and 501 GatewayAddress are NULL. 502 - When DeleteRoute is FALSE, either Destination or 503 GatewayAddress is NULL. 504 - *GatewayAddress is not a valid unicast IPv6 address. 505 - *GatewayAddress is one of the local configured IPv6 506 addresses. 507 @retval EFI_OUT_OF_RESOURCES Could not add the entry to the routing table. 508 @retval EFI_NOT_FOUND This route is not in the routing table (when DeleteRoute is TRUE). 509 @retval EFI_ACCESS_DENIED The route is already defined in the routing table (when 510 DeleteRoute is FALSE). 511 512 **/ 513 EFI_STATUS 514 EFIAPI 515 EfiIp6Routes ( 516 IN EFI_IP6_PROTOCOL *This, 517 IN BOOLEAN DeleteRoute, 518 IN EFI_IPv6_ADDRESS *Destination OPTIONAL, 519 IN UINT8 PrefixLength, 520 IN EFI_IPv6_ADDRESS *GatewayAddress OPTIONAL 521 ); 522 523 /** 524 Add or delete Neighbor cache entries. 525 526 The Neighbors() function is used to add, update, or delete an entry from a neighbor cache. 527 IPv6 neighbor cache entries are typically inserted and updated by the network protocol driver as 528 network traffic is processed. Most neighbor cache entries will timeout and be deleted if the network 529 traffic stops. Neighbor cache entries that were inserted by Neighbors() may be static (will not 530 timeout) or dynamic (will timeout). 531 532 The implementation should follow the neighbor cache timeout mechanism defined in 533 RFC4861. The default neighbor cache timeout value should be tuned for the expected network 534 environment. 535 536 @param[in] This The pointer to the EFI_IP6_PROTOCOL instance. 537 @param[in] DeleteFlag Set to TRUE to delete the specified cache entry. Set to FALSE to 538 add (or update, if it already exists and Override is TRUE) the 539 specified cache entry. TargetIp6Address is used as the key 540 to find the requested cache entry. 541 @param[in] TargetIp6Address The pointer to the Target IPv6 address. 542 @param[in] TargetLinkAddress The pointer to link-layer address of the target. Ignored if NULL. 543 @param[in] Timeout Time in 100-ns units that this entry will remain in the neighbor 544 cache, it will be deleted after Timeout. A value of zero means that 545 the entry is permanent. A non-zero value means that the entry is 546 dynamic. 547 @param[in] Override If TRUE, the cached link-layer address of the matching entry will 548 be overridden and updated; if FALSE, EFI_ACCESS_DENIED 549 will be returned if a corresponding cache entry already exists. 550 551 @retval EFI_SUCCESS The data has been queued for transmission. 552 @retval EFI_NOT_STARTED This instance has not been started. 553 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: 554 - This is NULL. 555 - TargetIpAddress is NULL. 556 - *TargetLinkAddress is invalid when not NULL. 557 - *TargetIpAddress is not a valid unicast IPv6 address. 558 - *TargetIpAddress is one of the local configured IPv6 559 addresses. 560 @retval EFI_OUT_OF_RESOURCES Could not add the entry to the neighbor cache. 561 @retval EFI_NOT_FOUND This entry is not in the neighbor cache (when DeleteFlag is 562 TRUE or when DeleteFlag is FALSE while 563 TargetLinkAddress is NULL.). 564 @retval EFI_ACCESS_DENIED The to-be-added entry is already defined in the neighbor cache, 565 and that entry is tagged as un-overridden (when Override 566 is FALSE). 567 568 **/ 569 EFI_STATUS 570 EFIAPI 571 EfiIp6Neighbors ( 572 IN EFI_IP6_PROTOCOL *This, 573 IN BOOLEAN DeleteFlag, 574 IN EFI_IPv6_ADDRESS *TargetIp6Address, 575 IN EFI_MAC_ADDRESS *TargetLinkAddress OPTIONAL, 576 IN UINT32 Timeout, 577 IN BOOLEAN Override 578 ); 579 580 /** 581 Places outgoing data packets into the transmit queue. 582 583 The Transmit() function places a sending request in the transmit queue of this 584 EFI IPv6 Protocol instance. Whenever the packet in the token is sent out or some 585 errors occur, the event in the token will be signaled and the status is updated. 586 587 @param[in] This The pointer to the EFI_IP6_PROTOCOL instance. 588 @param[in] Token The pointer to the transmit token. 589 590 @retval EFI_SUCCESS The data has been queued for transmission. 591 @retval EFI_NOT_STARTED This instance has not been started. 592 @retval EFI_NO_MAPPING The IPv6 driver was responsible for choosing 593 a source address for this transmission, 594 but no source address was available for use. 595 @retval EFI_INVALID_PARAMETER One or more of the following is TRUE: 596 - This is NULL. 597 - Token is NULL. 598 - Token.Event is NULL. 599 - Token.Packet.TxData is NULL. 600 - Token.Packet.ExtHdrsLength is not zero and 601 Token.Packet.ExtHdrs is NULL. 602 - Token.Packet.FragmentCount is zero. 603 - One or more of the Token.Packet.TxData. 604 FragmentTable[].FragmentLength fields is zero. 605 - One or more of the Token.Packet.TxData. 606 FragmentTable[].FragmentBuffer fields is NULL. 607 - Token.Packet.TxData.DataLength is zero or not 608 equal to the sum of fragment lengths. 609 - Token.Packet.TxData.DestinationAddress is non- 610 zero when DestinationAddress is configured as 611 non-zero when doing Configure() for this 612 EFI IPv6 protocol instance. 613 - Token.Packet.TxData.DestinationAddress is 614 unspecified when DestinationAddress is unspecified 615 when doing Configure() for this EFI IPv6 protocol 616 instance. 617 @retval EFI_ACCESS_DENIED The transmit completion token with the same Token. 618 The event was already in the transmit queue. 619 @retval EFI_NOT_READY The completion token could not be queued because 620 the transmit queue is full. 621 @retval EFI_NOT_FOUND Not route is found to the destination address. 622 @retval EFI_OUT_OF_RESOURCES Could not queue the transmit data. 623 @retval EFI_BUFFER_TOO_SMALL Token.Packet.TxData.TotalDataLength is too 624 short to transmit. 625 @retval EFI_BAD_BUFFER_SIZE If Token.Packet.TxData.DataLength is beyond the 626 maximum that which can be described through the 627 Fragment Offset field in Fragment header when 628 performing fragmentation. 629 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. 630 631 **/ 632 EFI_STATUS 633 EFIAPI 634 EfiIp6Transmit ( 635 IN EFI_IP6_PROTOCOL *This, 636 IN EFI_IP6_COMPLETION_TOKEN *Token 637 ); 638 639 /** 640 Places a receiving request into the receiving queue. 641 642 The Receive() function places a completion token into the receive packet queue. 643 This function is always asynchronous. 644 645 The Token.Event field in the completion token must be filled in by the caller 646 and cannot be NULL. When the receive operation completes, the EFI IPv6 Protocol 647 driver updates the Token.Status and Token.Packet.RxData fields and the Token.Event 648 is signaled. 649 650 Current Udp implementation creates an IP child for each Udp child. 651 It initates a asynchronous receive immediately whether or not 652 there is no mapping. Therefore, disable the returning EFI_NO_MAPPING for now. 653 To enable it, the following check must be performed: 654 655 if (NetIp6IsUnspecifiedAddr (&Config->StationAddress) && IP6_NO_MAPPING (IpInstance)) { 656 Status = EFI_NO_MAPPING; 657 goto Exit; 658 } 659 660 @param[in] This The pointer to the EFI_IP6_PROTOCOL instance. 661 @param[in] Token The pointer to a token that is associated with the 662 receive data descriptor. 663 664 @retval EFI_SUCCESS The receive completion token was cached. 665 @retval EFI_NOT_STARTED This EFI IPv6 Protocol instance has not been started. 666 @retval EFI_NO_MAPPING When IP6 driver responsible for binding source address to this instance, 667 while no source address is available for use. 668 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: 669 - This is NULL. 670 - Token is NULL. 671 - Token.Event is NULL. 672 @retval EFI_OUT_OF_RESOURCES The receive completion token could not be queued due to a lack of system 673 resources (usually memory). 674 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. 675 The EFI IPv6 Protocol instance has been reset to startup defaults. 676 @retval EFI_ACCESS_DENIED The receive completion token with the same Token.Event was already 677 in the receive queue. 678 @retval EFI_NOT_READY The receive request could not be queued because the receive queue is full. 679 680 **/ 681 EFI_STATUS 682 EFIAPI 683 EfiIp6Receive ( 684 IN EFI_IP6_PROTOCOL *This, 685 IN EFI_IP6_COMPLETION_TOKEN *Token 686 ); 687 688 /** 689 Abort an asynchronous transmit or receive request. 690 691 The Cancel() function is used to abort a pending transmit or receive request. 692 If the token is in the transmit or receive request queues, after calling this 693 function, Token->Status will be set to EFI_ABORTED, and then Token->Event will 694 be signaled. If the token is not in one of the queues, which usually means the 695 asynchronous operation has completed, this function will not signal the token, 696 and EFI_NOT_FOUND is returned. 697 698 @param[in] This The pointer to the EFI_IP6_PROTOCOL instance. 699 @param[in] Token The pointer to a token that has been issued by 700 EFI_IP6_PROTOCOL.Transmit() or 701 EFI_IP6_PROTOCOL.Receive(). If NULL, all pending 702 tokens are aborted. Type EFI_IP6_COMPLETION_TOKEN is 703 defined in EFI_IP6_PROTOCOL.Transmit(). 704 705 @retval EFI_SUCCESS The asynchronous I/O request was aborted and 706 Token->Event was signaled. When Token is NULL, all 707 pending requests were aborted, and their events were signaled. 708 @retval EFI_INVALID_PARAMETER This is NULL. 709 @retval EFI_NOT_STARTED This instance has not been started. 710 @retval EFI_NOT_FOUND When Token is not NULL, the asynchronous I/O request was 711 not found in the transmit or receive queue. It has either completed 712 or was not issued by Transmit() and Receive(). 713 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. 714 715 **/ 716 EFI_STATUS 717 EFIAPI 718 EfiIp6Cancel ( 719 IN EFI_IP6_PROTOCOL *This, 720 IN EFI_IP6_COMPLETION_TOKEN *Token OPTIONAL 721 ); 722 723 /** 724 Polls for incoming data packets and processes outgoing data packets. 725 726 The Poll() function polls for incoming data packets and processes outgoing data 727 packets. Network drivers and applications can call the EFI_IP6_PROTOCOL.Poll() 728 function to increase the rate that data packets are moved between the communications 729 device and the transmit and receive queues. 730 731 In some systems the periodic timer event may not poll the underlying communications 732 device fast enough to transmit and/or receive all data packets without missing 733 incoming packets or dropping outgoing packets. Drivers and applications that are 734 experiencing packet loss should try calling the EFI_IP6_PROTOCOL.Poll() function 735 more often. 736 737 @param[in] This The pointer to the EFI_IP6_PROTOCOL instance. 738 739 @retval EFI_SUCCESS Incoming or outgoing data was processed. 740 @retval EFI_NOT_STARTED This EFI IPv6 Protocol instance has not been started. 741 @retval EFI_INVALID_PARAMETER This is NULL. 742 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. 743 @retval EFI_NOT_READY No incoming or outgoing data was processed. 744 @retval EFI_TIMEOUT Data was dropped out of the transmit and/or receive queue. 745 Consider increasing the polling rate. 746 747 **/ 748 EFI_STATUS 749 EFIAPI 750 EfiIp6Poll ( 751 IN EFI_IP6_PROTOCOL *This 752 ); 753 754 #endif 755
