2 This file defines the EFI IPv6 (Internet Protocol version 6)
3 Protocol interface. It is split into the following three main
5 - EFI IPv6 Service Binding Protocol
8 The EFI IPv6 Protocol provides basic network IPv6 packet I/O services,
9 which includes support for Neighbor Discovery Protocol (ND), Multicast
10 Listener Discovery Protocol (MLD), and a subset of the Internet Control
11 Message Protocol (ICMPv6).
13 Copyright (c) 2008 - 2009, Intel Corporation
14 All rights reserved. This program and the accompanying materials
15 are licensed and made available under the terms and conditions of the BSD License
16 which accompanies this distribution. The full text of the license may be found at
17 http://opensource.org/licenses/bsd-license.php
19 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
20 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
22 @par Revision Reference:
23 This Protocol is introduced in UEFI Specification 2.2
27 #ifndef __EFI_IP6_PROTOCOL_H__
28 #define __EFI_IP6_PROTOCOL_H__
30 #include <Protocol/ManagedNetwork.h>
33 #define EFI_IP6_SERVICE_BINDING_PROTOCOL_GUID \
35 0xec835dd3, 0xfe0f, 0x617b, {0xa6, 0x21, 0xb3, 0x50, 0xc3, 0xe1, 0x33, 0x88 } \
38 #define EFI_IP6_PROTOCOL_GUID \
40 0x2c8759d5, 0x5c2d, 0x66ef, {0x92, 0x5f, 0xb6, 0x6c, 0x10, 0x19, 0x57, 0xe2 } \
43 typedef struct _EFI_IP6_PROTOCOL EFI_IP6_PROTOCOL
;
46 /// ICMPv6 type definitions for error messages
49 #define ICMP_V6_DEST_UNREACHABLE 0x1
50 #define ICMP_V6_PACKET_TOO_BIG 0x2
51 #define ICMP_V6_TIME_EXCEEDED 0x3
52 #define ICMP_V6_PARAMETER_PROBLEM 0x4
56 /// ICMPv6 type definition for informational messages
59 #define ICMP_V6_ECHO_REQUEST 0x80
60 #define ICMP_V6_ECHO_REPLY 0x81
61 #define ICMP_V6_LISTENER_QUERY 0x82
62 #define ICMP_V6_LISTENER_REPORT 0x83
63 #define ICMP_V6_LISTENER_DONE 0x84
64 #define ICMP_V6_ROUTER_SOLICIT 0x85
65 #define ICMP_V6_ROUTER_ADVERTISE 0x86
66 #define ICMP_V6_NEIGHBOR_SOLICIT 0x87
67 #define ICMP_V6_NEIGHBOR_ADVERTISE 0x88
68 #define ICMP_V6_REDIRECT 0x89
69 #define ICMP_V6_LISTENER_REPORT_2 0x8F
73 /// ICMPv6 code definitions for ICMP_V6_DEST_UNREACHABLE
76 #define ICMP_V6_NO_ROUTE_TO_DEST 0x0
77 #define ICMP_V6_COMM_PROHIBITED 0x1
78 #define ICMP_V6_BEYOND_SCOPE 0x2
79 #define ICMP_V6_ADDR_UNREACHABLE 0x3
80 #define ICMP_V6_PORT_UNREACHABLE 0x4
81 #define ICMP_V6_SOURCE_ADDR_FAILED 0x5
82 #define ICMP_V6_ROUTE_REJECTED 0x6
86 /// ICMPv6 code definitions for ICMP_V6_TIME_EXCEEDED
89 #define ICMP_V6_TIMEOUT_HOP_LIMIT 0x0
90 #define ICMP_V6_TIMEOUT_REASSEMBLE 0x1
94 /// ICMPv6 code definitions for ICMP_V6_PARAMETER_PROBLEM
97 #define ICMP_V6_ERRONEOUS_HEADER 0x0
98 #define ICMP_V6_UNRECOGNIZE_NEXT_HDR 0x1
99 #define ICMP_V6_UNRECOGNIZE_OPTION 0x2
103 /// EFI_IP6_CONFIG_DATA
104 /// is used to report and change IPv6 session parameters.
108 /// For the IPv6 packet to send and receive, this is the default value
109 /// of the 'Next Header' field in the last IPv6 extension header or in
110 /// the IPv6 header if there are no extension headers. Ignored when
111 /// AcceptPromiscuous is TRUE.
113 UINT8 DefaultProtocol
;
115 /// Set to TRUE to receive all IPv6 packets that get through the
117 /// Set to FALSE to receive only the DefaultProtocol IPv6
118 /// packets that get through the receive filters. Ignored when
119 /// AcceptPromiscuous is TRUE.
121 BOOLEAN AcceptAnyProtocol
;
123 /// Set to TRUE to receive ICMP error report packets. Ignored when
124 /// AcceptPromiscuous or AcceptAnyProtocol is TRUE.
126 BOOLEAN AcceptIcmpErrors
;
128 /// Set to TRUE to receive all IPv6 packets that are sent to any
129 /// hardware address or any protocol address. Set to FALSE to stop
130 /// receiving all promiscuous IPv6 packets.
132 BOOLEAN AcceptPromiscuous
;
134 /// The destination address of the packets that will be transmitted.
135 /// Ignored if it is unspecified.
137 EFI_IPv6_ADDRESS DestinationAddress
;
139 /// The station IPv6 address that will be assigned to this EFI IPv6
140 /// Protocol instance. This field can be set and changed only when
141 /// the EFI IPv6 driver is transitioning from the stopped to the started
142 /// states. If the StationAddress is specified, the EFI IPv6 Protocol
143 /// driver will deliver only incoming IPv6 packets whose destination
144 /// matches this IPv6 address exactly. The StationAddress is required
145 /// to be one of currently configured IPv6 addresses. An address
146 /// containing all zeroes is also accepted as a special case. Under this
147 /// situation, the IPv6 driver is responsible for binding a source
148 /// address to this EFI IPv6 protocol instance according to the source
149 /// address selection algorithm. Only incoming packets destined to
150 /// the selected address will be delivered to the user. And the
151 /// selected station address can be retrieved through later
152 /// GetModeData() call. If no address is available for selecting,
153 /// EFI_NO_MAPPING will be returned, and the station address will
154 /// only be successfully bound to this EFI IPv6 protocol instance
155 /// after IP6ModeData.IsConfigured changed to TRUE.
157 EFI_IPv6_ADDRESS StationAddress
;
159 /// TrafficClass field in transmitted IPv6 packets. Default value
164 /// HopLimit field in transmitted IPv6 packets.
168 /// FlowLabel field in transmitted IPv6 packets. Default value is
173 /// The timer timeout value (number of microseconds) for the
174 /// receive timeout event to be associated with each assembled
175 /// packet. Zero means do not drop assembled packets.
177 UINT32 ReceiveTimeout
;
179 /// The timer timeout value (number of microseconds) for the
180 /// transmit timeout event to be associated with each outgoing
181 /// packet. Zero means do not drop outgoing packets.
183 UINT32 TransmitTimeout
;
184 } EFI_IP6_CONFIG_DATA
;
187 /// EFI_IP6_ADDRESS_INFO
190 EFI_IPv6_ADDRESS Address
; ///< The IPv6 address.
191 UINT8 PrefixLength
; ///< The length of the prefix associated with the Address.
192 } EFI_IP6_ADDRESS_INFO
;
195 /// EFI_IP6_ROUTE_TABLE
196 /// is the entry structure that is used in routing tables
200 /// The IPv6 address of the gateway to be used as the next hop for
201 /// packets to this prefix. If the IPv6 address is all zeros, then the
202 /// prefix is on-link.
204 EFI_IPv6_ADDRESS Gateway
;
206 /// The destination prefix to be routed.
208 EFI_IPv6_ADDRESS Destination
;
210 /// The length of the prefix associated with the Destination.
213 } EFI_IP6_ROUTE_TABLE
;
216 /// EFI_IP6_NEIGHBOR_STATE
220 /// Address resolution is being performed on this entry. Specially,
221 /// Neighbor Solicitation has been sent to the solicited-node
222 /// multicast address of the target, but corresponding Neighbor
223 /// Advertisement has not been received.
225 EfiNeighborInComplete
,
227 /// Positive confirmation was received that the forward path to the
228 /// neighbor was functioning properly.
230 EfiNeighborReachable
,
232 ///Reachable Time has elapsed since the last positive confirmation
233 ///was received. In this state, the forward path to the neighbor was
234 ///functioning properly.
238 /// This state is an optimization that gives upper-layer protocols
239 /// additional time to provide reachability confirmation.
243 /// A reachability confirmation is actively sought by retransmitting
244 /// Neighbor Solicitations every RetransTimer milliseconds until a
245 /// reachability confirmation is received.
248 } EFI_IP6_NEIGHBOR_STATE
;
251 /// EFI_IP6_NEIGHBOR_CACHE
252 /// is the entry structure that is used in neighbor cache. It records a set
253 /// of entries about individual neighbors to which traffic has been sent recently.
256 EFI_IPv6_ADDRESS Neighbor
; ///< The on-link unicast/anycast IP address of the neighbor.
257 EFI_MAC_ADDRESS LinkAddress
; ///< Link-layer address of the neighbor.
258 EFI_IP6_NEIGHBOR_STATE State
; ///< State of this neighbor cache entry.
259 } EFI_IP6_NEIGHBOR_CACHE
;
262 /// EFI_IP6_ICMP_TYPE
263 /// is used to describe those ICMP messages that are supported by this EFI
264 /// IPv6 Protocol driver.
267 UINT8 Type
; ///< The type of ICMP message.
268 UINT8 Code
; ///< The code of the ICMP message.
272 /// EFI_IP6_MODE_DATA
276 /// Set to TRUE after this EFI IPv6 Protocol instance is started.
277 /// All other fields in this structure are undefined until this field is TRUE.
278 /// Set to FALSE when the EFI IPv6 Protocol instance is stopped.
282 /// The maximum packet size, in bytes, of the packet which the upper layer driver could feed.
284 UINT32 MaxPacketSize
;
286 /// Current configuration settings. Undefined until IsStarted is TRUE.
288 EFI_IP6_CONFIG_DATA ConfigData
;
290 /// Set to TRUE when the EFI IPv6 Protocol instance is configured.
291 /// The instance is configured when it has a station address and
292 /// corresponding prefix length.
293 /// Set to FALSE when the EFI IPv6 Protocol instance is not configured.
295 BOOLEAN IsConfigured
;
297 /// Number of configured IPv6 addresses on this interface.
301 /// List of currently configured IPv6 addresses and corresponding
302 /// prefix lengths assigned to this interface. It is caller's
303 /// responsibility to free this buffer.
305 EFI_IP6_ADDRESS_INFO
*AddressList
;
307 /// Number of joined multicast groups. Undefined until
308 /// IsConfigured is TRUE.
312 /// List of joined multicast group addresses. It is caller's
313 /// responsibility to free this buffer. Undefined until
314 /// IsConfigured is TRUE.
316 EFI_IPv6_ADDRESS
*GroupTable
;
318 /// Number of entries in the routing table. Undefined until
319 /// IsConfigured is TRUE.
323 /// Routing table entries. It is caller's responsibility to free this buffer.
325 EFI_IP6_ROUTE_TABLE
*RouteTable
;
327 /// Number of entries in the neighbor cache. Undefined until
328 /// IsConfigured is TRUE.
330 UINT32 NeighborCount
;
332 /// Neighbor cache entries. It is caller's responsibility to free this
333 /// buffer. Undefined until IsConfigured is TRUE.
335 EFI_IP6_NEIGHBOR_CACHE
*NeighborCache
;
337 /// Number of entries in the prefix table. Undefined until
338 /// IsConfigured is TRUE.
342 /// On-link Prefix table entries. It is caller's responsibility to free this
343 /// buffer. Undefined until IsConfigured is TRUE.
345 EFI_IP6_ADDRESS_INFO
*PrefixTable
;
347 /// Number of entries in the supported ICMP types list.
349 UINT32 IcmpTypeCount
;
351 /// Array of ICMP types and codes that are supported by this EFI
352 /// IPv6 Protocol driver. It is caller's responsibility to free this
355 EFI_IP6_ICMP_TYPE
*IcmpTypeList
;
360 /// The fields in the IPv6 header structure are defined in the Internet
361 /// Protocol version6 specification.
364 typedef struct _EFI_IP6_HEADER
{
365 UINT8 TrafficClassH
:4;
368 UINT8 TrafficClassL
:4;
370 UINT16 PayloadLength
;
373 EFI_IPv6_ADDRESS SourceAddress
;
374 EFI_IPv6_ADDRESS DestinationAddress
;
379 /// EFI_IP6_FRAGMENT_DATA
380 /// describes the location and length of the IPv6 packet
381 /// fragment to transmit or that has been received.
383 typedef struct _EFI_IP6_FRAGMENT_DATA
{
384 UINT32 FragmentLength
; ///< Length of fragment data. This field may not be set to zero.
385 VOID
*FragmentBuffer
; ///< Pointer to fragment data. This field may not be set to NULL.
386 } EFI_IP6_FRAGMENT_DATA
;
389 /// EFI_IP6_RECEIVE_DATA
391 typedef struct _EFI_IP6_RECEIVE_DATA
{
393 /// Time when the EFI IPv6 Protocol driver accepted the packet.
394 /// Ignored if it is zero.
398 /// After this event is signaled, the receive data structure is released
399 /// and must not be referenced.
401 EFI_EVENT RecycleSignal
;
403 ///Length of the IPv6 packet headers, including both the IPv6
404 ///header and any extension headers.
408 /// Pointer to the IPv6 packet header. If the IPv6 packet was
409 /// fragmented, this argument is a pointer to the header in the first
412 EFI_IP6_HEADER
*Header
;
414 /// Sum of the lengths of IPv6 packet buffers in FragmentTable. May
419 /// Number of IPv6 payload fragments. May be zero.
421 UINT32 FragmentCount
;
423 /// Array of payload fragment lengths and buffer pointers.
425 EFI_IP6_FRAGMENT_DATA FragmentTable
[1];
426 } EFI_IP6_RECEIVE_DATA
;
429 /// EFI_IP6_OVERRIDE_DATA
430 /// The information and flags in the override data structure will override
431 /// default parameters or settings for one Transmit() function call.
433 typedef struct _EFI_IP6_OVERRIDE_DATA
{
434 UINT8 Protocol
; ///< Protocol type override.
435 UINT8 HopLimit
; ///< Hop-Limit override.
436 UINT32 FlowLabel
; ///< Flow-Label override.
437 } EFI_IP6_OVERRIDE_DATA
;
440 /// EFI_IP6_TRANSMIT_DATA
442 typedef struct _EFI_IP6_TRANSMIT_DATA
{
444 /// The destination IPv6 address. If it is unspecified,
445 /// ConfigData.DestinationAddress will be used instead.
447 EFI_IPv6_ADDRESS DestinationAddress
;
449 /// If not NULL, the IPv6 transmission control override data.
451 EFI_IP6_OVERRIDE_DATA
*OverrideData
;
453 /// Total length in byte of the IPv6 extension headers specified in
456 UINT32 ExtHdrsLength
;
458 /// Pointer to the IPv6 extension headers. The IP layer will append
459 /// the required extension headers if they are not specified by
460 /// ExtHdrs. Ignored if ExtHdrsLength is zero.
464 /// The protocol of first extension header in ExtHdrs. Ignored if
465 /// ExtHdrsLength is zero.
469 /// Total length in bytes of the FragmentTable data to transmit.
473 /// Number of entries in the fragment data table.
475 UINT32 FragmentCount
;
477 /// Start of the fragment data table.
479 EFI_IP6_FRAGMENT_DATA FragmentTable
[1];
480 } EFI_IP6_TRANSMIT_DATA
;
483 /// EFI_IP6_COMPLETION_TOKEN
484 /// structures are used for both transmit and receive operations.
488 /// This Event will be signaled after the Status field is updated by
489 /// the EFI IPv6 Protocol driver. The type of Event must be EFI_NOTIFY_SIGNAL.
493 /// Will be set to one of the following values:
494 /// - EFI_SUCCESS: The receive or transmit completed
496 /// - EFI_ABORTED: The receive or transmit was aborted
497 /// - EFI_TIMEOUT: The transmit timeout expired.
498 /// - EFI_ICMP_ERROR: An ICMP error packet was received.
499 /// - EFI_DEVICE_ERROR: An unexpected system or network
501 /// - EFI_SECURITY_VIOLATION: The transmit or receive was
502 /// failed because of an IPsec policy check.
507 /// When the Token is used for receiving, RxData is a pointer to the EFI_IP6_RECEIVE_DATA.
509 EFI_IP6_RECEIVE_DATA
*RxData
;
511 /// When the Token is used for transmitting, TxData is a pointer to the EFI_IP6_TRANSMIT_DATA.
513 EFI_IP6_TRANSMIT_DATA
*TxData
;
515 } EFI_IP6_COMPLETION_TOKEN
;
518 Gets the current operational settings for this instance of the EFI IPv6 Protocol driver.
520 The GetModeData() function returns the current operational mode data for this driver instance.
521 The data fields in EFI_IP6_MODE_DATA are read only. This function is used optionally to
522 retrieve the operational mode data of underlying networks or drivers..
524 @param[in] This Pointer to the EFI_IP6_PROTOCOL instance.
525 @param[out] Ip6ModeData Pointer to the EFI IPv6 Protocol mode data structure.
526 @param[out] MnpConfigData Pointer to the managed network configuration data structure.
527 @param[out] SnpModeData Pointer to the simple network mode data structure.
529 @retval EFI_SUCCESS The operation completed successfully.
530 @retval EFI_INVALID_PARAMETER This is NULL.
531 @retval EFI_OUT_OF_RESOURCES The required mode data could not be allocated.
536 (EFIAPI
*EFI_IP6_GET_MODE_DATA
)(
537 IN EFI_IP6_PROTOCOL
*This
,
538 OUT EFI_IP6_MODE_DATA
*Ip6ModeData OPTIONAL
,
539 OUT EFI_MANAGED_NETWORK_CONFIG_DATA
*MnpConfigData OPTIONAL
,
540 OUT EFI_SIMPLE_NETWORK_MODE
*SnpModeData OPTIONAL
544 Assigns an IPv6 address and subnet mask to this EFI IPv6 Protocol driver instance.
546 The Configure() function is used to set, change, or reset the operational parameters and filter
547 settings for this EFI IPv6 Protocol instance. Until these parameters have been set, no network traffic
548 can be sent or received by this instance. Once the parameters have been reset (by calling this
549 function with Ip6ConfigData set to NULL), no more traffic can be sent or received until these
550 parameters have been set again. Each EFI IPv6 Protocol instance can be started and stopped
551 independently of each other by enabling or disabling their receive filter settings with the
552 Configure() function.
554 If Ip6ConfigData.StationAddress is a valid non-zero IPv6 unicast address, it is required
555 to be one of the currently configured IPv6 addresses list in the EFI IPv6 drivers, or else
556 EFI_INVALID_PARAMETER will be returned. If Ip6ConfigData.StationAddress is
557 unspecified, the IPv6 driver will bind a source address according to the source address selection
558 algorithm. Clients could frequently call GetModeData() to check get currently configured IPv6
559 address list in the EFI IPv6 driver. If both Ip6ConfigData.StationAddress and
560 Ip6ConfigData.Destination are unspecified, when transmitting the packet afterwards, the
561 source address filled in each outgoing IPv6 packet is decided based on the destination of this packet. .
563 If operational parameters are reset or changed, any pending transmit and receive requests will be
564 cancelled. Their completion token status will be set to EFI_ABORTED and their events will be
567 @param[in] This Pointer to the EFI_IP6_PROTOCOL instance.
568 @param[in] Ip6ConfigData Pointer to the EFI IPv6 Protocol configuration data structure.
570 @retval EFI_SUCCESS The driver instance was successfully opened.
571 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
573 - Ip6ConfigData.StationAddress is neither zero nor
574 a unicast IPv6 address.
575 - Ip6ConfigData.StationAddress is neither zero nor
576 one of the configured IP addresses in the EFI IPv6 driver.
577 - Ip6ConfigData.DefaultProtocol is illegal.
578 @retval EFI_OUT_OF_RESOURCES The EFI IPv6 Protocol driver instance data could not be allocated.
579 @retval EFI_NO_MAPPING The IPv6 driver was responsible for choosing a source address for
580 this instance, but no source address was available for use.
581 @retval EFI_ALREADY_STARTED The interface is already open and must be stopped before the IPv6
582 address or prefix length can be changed.
583 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. The EFI IPv6
584 Protocol driver instance is not opened.
585 @retval EFI_UNSUPPORTED Default protocol specified through
586 Ip6ConfigData.DefaulProtocol isn't supported.
591 (EFIAPI
*EFI_IP6_CONFIGURE
)(
592 IN EFI_IP6_PROTOCOL
*This
,
593 IN EFI_IP6_CONFIG_DATA
*Ip6ConfigData OPTIONAL
597 Joins and leaves multicast groups.
599 The Groups() function is used to join and leave multicast group sessions. Joining a group will
600 enable reception of matching multicast packets. Leaving a group will disable reception of matching
601 multicast packets. Source-Specific Multicast isn't required to be supported.
603 If JoinFlag is FALSE and GroupAddress is NULL, all joined groups will be left.
605 @param[in] This Pointer to the EFI_IP6_PROTOCOL instance.
606 @param[in] JoinFlag Set to TRUE to join the multicast group session and FALSE to leave.
607 @param[in] GroupAddress Pointer to the IPv6 multicast address.
609 @retval EFI_SUCCESS The operation completed successfully.
610 @retval EFI_INVALID_PARAMETER One or more of the following is TRUE:
612 - JoinFlag is TRUE and GroupAddress is NULL.
613 - GroupAddress is not NULL and *GroupAddress is
614 not a multicast IPv6 address.
615 - GroupAddress is not NULL and *GroupAddress is in the
616 range of SSM destination address.
617 @retval EFI_NOT_STARTED This instance has not been started.
618 @retval EFI_OUT_OF_RESOURCES System resources could not be allocated.
619 @retval EFI_UNSUPPORTED This EFI IPv6 Protocol implementation does not support multicast groups.
620 @retval EFI_ALREADY_STARTED The group address is already in the group table (when
622 @retval EFI_NOT_FOUND The group address is not in the group table (when JoinFlag is FALSE).
623 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
628 (EFIAPI
*EFI_IP6_GROUPS
)(
629 IN EFI_IP6_PROTOCOL
*This
,
631 IN EFI_IPv6_ADDRESS
*GroupAddress OPTIONAL
635 Adds and deletes routing table entries.
637 The Routes() function adds a route to or deletes a route from the routing table.
639 Routes are determined by comparing the leftmost PrefixLength bits of Destination with
640 the destination IPv6 address arithmetically. The gateway address must be on the same subnet as the
641 configured station address.
643 The default route is added with Destination and PrefixLegth both set to all zeros. The
644 default route matches all destination IPv6 addresses that do not match any other routes.
646 All EFI IPv6 Protocol instances share a routing table.
648 @param[in] This Pointer to the EFI_IP6_PROTOCOL instance.
649 @param[in] DeleteRoute Set to TRUE to delete this route from the routing table. Set to
650 FALSE to add this route to the routing table. Destination,
651 PrefixLength and Gateway are used as the key to each
653 @param[in] Destination The address prefix of the subnet that needs to be routed.
654 @param[in] PrefixLength The prefix length of Destination. Ignored if Destination
656 @param[in] GatewayAddress The unicast gateway IPv6 address for this route.
658 @retval EFI_SUCCESS The operation completed successfully.
659 @retval EFI_NOT_STARTED The driver instance has not been started.
660 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
662 - When DeleteRoute is TRUE, both Destination and
663 GatewayAddress are NULL.
664 - When DeleteRoute is FALSE, either Destination or
665 GatewayAddress is NULL.
666 - *GatewayAddress is not a valid unicast IPv6 address.
667 - *GatewayAddress is one of the local configured IPv6
669 @retval EFI_OUT_OF_RESOURCES Could not add the entry to the routing table.
670 @retval EFI_NOT_FOUND This route is not in the routing table (when DeleteRoute is TRUE).
671 @retval EFI_ACCESS_DENIED The route is already defined in the routing table (when
672 DeleteRoute is FALSE).
677 (EFIAPI
*EFI_IP6_ROUTES
)(
678 IN EFI_IP6_PROTOCOL
*This
,
679 IN BOOLEAN DeleteRoute
,
680 IN EFI_IPv6_ADDRESS
*Destination OPTIONAL
,
681 IN UINT8 PrefixLength
,
682 IN EFI_IPv6_ADDRESS
*GatewayAddress OPTIONAL
686 Add or delete Neighbor cache entries.
688 The Neighbors() function is used to add, update, or delete an entry from neighbor cache.
689 IPv6 neighbor cache entries are typically inserted and updated by the network protocol driver as
690 network traffic is processed. Most neighbor cache entries will time out and be deleted if the network
691 traffic stops. Neighbor cache entries that were inserted by Neighbors() may be static (will not
692 timeout) or dynamic (will time out).
694 The implementation should follow the neighbor cache timeout mechanism which is defined in
695 RFC4861. The default neighbor cache timeout value should be tuned for the expected network
698 @param[in] This Pointer to the EFI_IP6_PROTOCOL instance.
699 @param[in] DeleteFlag Set to TRUE to delete the specified cache entry, set to FALSE to
700 add (or update, if it already exists and Override is TRUE) the
701 specified cache entry. TargetIp6Address is used as the key
702 to find the requested cache entry.
703 @param[in] TargetIp6Address Pointer to Target IPv6 address.
704 @param[in] TargetLinkAddress Pointer to link-layer address of the target. Ignored if NULL.
705 @param[in] Timeout Time in 100-ns units that this entry will remain in the neighbor
706 cache, it will be deleted after Timeout. A value of zero means that
707 the entry is permanent. A non-zero value means that the entry is
709 @param[in] Override If TRUE, the cached link-layer address of the matching entry will
710 be overridden and updated; if FALSE, EFI_ACCESS_DENIED
711 will be returned if a corresponding cache entry already existed.
713 @retval EFI_SUCCESS The data has been queued for transmission.
714 @retval EFI_NOT_STARTED This instance has not been started.
715 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
717 - TargetIpAddress is NULL.
718 - *TargetLinkAddress is invalid when not NULL.
719 - *TargetIpAddress is not a valid unicast IPv6 address.
720 - *TargetIpAddress is one of the local configured IPv6
722 @retval EFI_OUT_OF_RESOURCES Could not add the entry to the neighbor cache.
723 @retval EFI_NOT_FOUND This entry is not in the neighbor cache (when DeleteFlag is
724 TRUE or when DeleteFlag is FALSE while
725 TargetLinkAddress is NULL.).
726 @retval EFI_ACCESS_DENIED The to-be-added entry is already defined in the neighbor cache,
727 and that entry is tagged as un-overridden (when DeleteFlag
733 (EFIAPI
*EFI_IP6_NEIGHBORS
)(
734 IN EFI_IP6_PROTOCOL
*This
,
735 IN BOOLEAN DeleteFlag
,
736 IN EFI_IPv6_ADDRESS
*TargetIp6Address
,
737 IN EFI_MAC_ADDRESS
*TargetLinkAddress
,
743 Places outgoing data packets into the transmit queue.
745 The Transmit() function places a sending request in the transmit queue of this
746 EFI IPv6 Protocol instance. Whenever the packet in the token is sent out or some
747 errors occur, the event in the token will be signaled and the status is updated.
749 @param[in] This Pointer to the EFI_IP6_PROTOCOL instance.
750 @param[in] Token Pointer to the transmit token.
752 @retval EFI_SUCCESS The data has been queued for transmission.
753 @retval EFI_NOT_STARTED This instance has not been started.
754 @retval EFI_NO_MAPPING The IPv6 driver was responsible for choosing a source address for
755 this transmission, but no source address was available for use.
756 @retval EFI_INVALID_PARAMETER One or more of the following is TRUE:
759 - Token.Event is NULL.
760 - Token.Packet.TxData is NULL.
761 - Token.Packet.ExtHdrsLength is not zero and Token.Packet.ExtHdrs is NULL.
762 - Token.Packet.FragmentCount is zero.
763 - One or more of the Token.Packet.TxData.FragmentTable[].FragmentLength fields is zero.
764 - One or more of the Token.Packet.TxData.FragmentTable[].FragmentBuffer fields is NULL.
765 - Token.Packet.TxData.DataLength is zero or not equal to the sum of fragment lengths.
766 - Token.Packet.TxData.DestinationAddress is non-zero when DestinationAddress is configured as
767 non-zero when doing Configure() for this EFI IPv6 protocol instance.
768 - Token.Packet.TxData.DestinationAddress is unspecified when DestinationAddress is unspecified
769 when doing Configure() for this EFI IPv6 protocol instance.
770 @retval EFI_ACCESS_DENIED The transmit completion token with the same Token.Event
771 was already in the transmit queue.
772 @retval EFI_NOT_READY The completion token could not be queued because the transmit
774 @retval EFI_NOT_FOUND Not route is found to destination address.
775 @retval EFI_OUT_OF_RESOURCES Could not queue the transmit data.
776 @retval EFI_BUFFER_TOO_SMALL Token.Packet.TxData.TotalDataLength is too
778 @retval EFI_BAD_BUFFER_SIZE If Token.Packet.TxData.DataLength is beyond the
779 maximum that which can be described through the Fragment Offset
780 field in Fragment header when performing fragmentation.
781 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
786 (EFIAPI
*EFI_IP6_TRANSMIT
)(
787 IN EFI_IP6_PROTOCOL
*This
,
788 IN EFI_IP6_COMPLETION_TOKEN
*Token
792 Places a receiving request into the receiving queue.
794 The Receive() function places a completion token into the receive packet queue.
795 This function is always asynchronous.
797 The Token.Event field in the completion token must be filled in by the caller
798 and cannot be NULL. When the receive operation completes, the EFI IPv6 Protocol
799 driver updates the Token.Status and Token.Packet.RxData fields and the Token.Event
802 @param[in] This Pointer to the EFI_IP6_PROTOCOL instance.
803 @param]in] Token Pointer to a token that is associated with the receive data descriptor.
805 @retval EFI_SUCCESS The receive completion token was cached.
806 @retval EFI_NOT_STARTED This EFI IPv6 Protocol instance has not been started.
807 @retval EFI_NO_MAPPING When IP6 driver responsible for binding source address to this instance,
808 while no source address is available for use.
809 @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
812 - Token.Event is NULL.
813 @retval EFI_OUT_OF_RESOURCES The receive completion token could not be queued due to a lack of system
814 resources (usually memory).
815 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
816 The EFI IPv6 Protocol instance has been reset to startup defaults.
817 @retval EFI_ACCESS_DENIED The receive completion token with the same Token.Event was already
818 in the receive queue.
819 @retval EFI_NOT_READY The receive request could not be queued because the receive queue is full.
824 (EFIAPI
*EFI_IP6_RECEIVE
)(
825 IN EFI_IP6_PROTOCOL
*This
,
826 IN EFI_IP6_COMPLETION_TOKEN
*Token
830 Abort an asynchronous transmit or receive request.
832 The Cancel() function is used to abort a pending transmit or receive request.
833 If the token is in the transmit or receive request queues, after calling this
834 function, Token->Status will be set to EFI_ABORTED and then Token->Event will
835 be signaled. If the token is not in one of the queues, which usually means the
836 asynchronous operation has completed, this function will not signal the token
837 and EFI_NOT_FOUND is returned.
839 @param[in] This Pointer to the EFI_IP6_PROTOCOL instance.
840 @param[in] Token Pointer to a token that has been issued by
841 EFI_IP6_PROTOCOL.Transmit() or
842 EFI_IP6_PROTOCOL.Receive(). If NULL, all pending
843 tokens are aborted. Type EFI_IP6_COMPLETION_TOKEN is
844 defined in EFI_IP6_PROTOCOL.Transmit().
846 @retval EFI_SUCCESS The asynchronous I/O request was aborted and
847 Token->Event was signaled. When Token is NULL, all
848 pending requests were aborted and their events were signaled.
849 @retval EFI_INVALID_PARAMETER This is NULL.
850 @retval EFI_NOT_STARTED This instance has not been started.
851 @retval EFI_NOT_FOUND When Token is not NULL, the asynchronous I/O request was
852 not found in the transmit or receive queue. It has either completed
853 or was not issued by Transmit() and Receive().
854 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
859 (EFIAPI
*EFI_IP6_CANCEL
)(
860 IN EFI_IP6_PROTOCOL
*This
,
861 IN EFI_IP6_COMPLETION_TOKEN
*Token OPTIONAL
865 Polls for incoming data packets and processes outgoing data packets.
867 The Poll() function polls for incoming data packets and processes outgoing data
868 packets. Network drivers and applications can call the EFI_IP6_PROTOCOL.Poll()
869 function to increase the rate that data packets are moved between the communications
870 device and the transmit and receive queues.
872 In some systems the periodic timer event may not poll the underlying communications
873 device fast enough to transmit and/or receive all data packets without missing
874 incoming packets or dropping outgoing packets. Drivers and applications that are
875 experiencing packet loss should try calling the EFI_IP6_PROTOCOL.Poll() function
878 @param[in] This Pointer to the EFI_IP6_PROTOCOL instance.
880 @retval EFI_SUCCESS Incoming or outgoing data was processed.
881 @retval EFI_NOT_STARTED This EFI IPv6 Protocol instance has not been started.
882 @retval EFI_INVALID_PARAMETER This is NULL.
883 @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
884 @retval EFI_NOT_READY No incoming or outgoing data is processed.
885 @retval EFI_TIMEOUT Data was dropped out of the transmit and/or receive queue.
886 Consider increasing the polling rate.
891 (EFIAPI
*EFI_IP6_POLL
)(
892 IN EFI_IP6_PROTOCOL
*This
896 /// The EFI IPv6 Protocol implements a simple packet-oriented interface that can be
897 /// used by drivers, daemons, and applications to transmit and receive network packets.
899 struct _EFI_IP6_PROTOCOL
{
900 EFI_IP6_GET_MODE_DATA GetModeData
;
901 EFI_IP6_CONFIGURE Configure
;
902 EFI_IP6_GROUPS Groups
;
903 EFI_IP6_ROUTES Routes
;
904 EFI_IP6_NEIGHBORS Neighbors
;
905 EFI_IP6_TRANSMIT Transmit
;
906 EFI_IP6_RECEIVE Receive
;
907 EFI_IP6_CANCEL Cancel
;
911 extern EFI_GUID gEfiIp6ServiceBindingProtocolGuid
;
912 extern EFI_GUID gEfiIp6ProtocolGuid
;