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/*
* Copyright (c) 2023, The OpenThread Authors.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @file
* @brief
* This file defines the OpenThread Mesh Diagnostic APIs.
*/
#ifndef OPENTHREAD_MESH_DIAG_H_
#define OPENTHREAD_MESH_DIAG_H_
#include <openthread/instance.h>
#include <openthread/thread.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @addtogroup api-mesh-diag
*
* @brief
* This module includes definitions and functions for Mesh Diagnostics.
*
* The Mesh Diagnostics APIs require `OPENTHREAD_CONFIG_MESH_DIAG_ENABLE` and `OPENTHREAD_FTD`.
*
* @{
*
*/
/**
* Represents the set of configurations used when discovering mesh topology indicating which items to
* discover.
*
*/
typedef struct otMeshDiagDiscoverConfig
{
bool mDiscoverIp6Addresses : 1; ///< Whether or not to discover IPv6 addresses of every router.
bool mDiscoverChildTable : 1; ///< Whether or not to discover children of every router.
} otMeshDiagDiscoverConfig;
/**
* An opaque iterator to iterate over list of IPv6 addresses of a router.
*
* Pointers to instance of this type are provided in `otMeshDiagRouterInfo`.
*
*/
typedef struct otMeshDiagIp6AddrIterator otMeshDiagIp6AddrIterator;
/**
* An opaque iterator to iterate over list of children of a router.
*
* Pointers to instance of this type are provided in `otMeshDiagRouterInfo`.
*
*/
typedef struct otMeshDiagChildIterator otMeshDiagChildIterator;
/**
* Specifies that Thread Version is unknown.
*
* This is used in `otMeshDiagRouterInfo` for `mVersion` property when device does not provide its version. This
* indicates that device is likely running 1.3.0 (version value 4) or earlier.
*
*/
#define OT_MESH_DIAG_VERSION_UNKNOWN 0xffff
/**
* Represents information about a router in Thread mesh discovered using `otMeshDiagDiscoverTopology()`.
*
*/
typedef struct otMeshDiagRouterInfo
{
otExtAddress mExtAddress; ///< Extended MAC address.
uint16_t mRloc16; ///< RLOC16.
uint8_t mRouterId; ///< Router ID.
uint16_t mVersion; ///< Thread Version. `OT_MESH_DIAG_VERSION_UNKNOWN` if unknown.
bool mIsThisDevice : 1; ///< Whether router is this device itself.
bool mIsThisDeviceParent : 1; ///< Whether router is parent of this device (when device is a child).
bool mIsLeader : 1; ///< Whether router is leader.
bool mIsBorderRouter : 1; ///< Whether router acts as a border router providing ext connectivity.
/**
* Provides the link quality from this router to other routers, also indicating whether a link is established
* between the routers.
*
* The array is indexed based on Router ID. `mLinkQualities[routerId]` indicates the incoming link quality, the
* router sees to the router with `routerId`. Link quality is a value in [0, 3]. Value zero indicates no link.
* Larger value indicate better link quality (as defined by Thread specification).
*
*/
uint8_t mLinkQualities[OT_NETWORK_MAX_ROUTER_ID + 1];
/**
* A pointer to an iterator to go through the list of IPv6 addresses of the router.
*
* The pointer is valid only while `otMeshDiagRouterInfo` is valid. It can be used in `otMeshDiagGetNextIp6Address`
* to iterate through the IPv6 addresses.
*
* The pointer can be NULL when there was no request to discover IPv6 addresses (in `otMeshDiagDiscoverConfig`) or
* if the router did not provide the list.
*
*/
otMeshDiagIp6AddrIterator *mIp6AddrIterator;
/**
* A pointer to an iterator to go through the list of children of the router.
*
* The pointer is valid only while `otMeshDiagRouterInfo` is valid. It can be used in `otMeshDiagGetNextChildInfo`
* to iterate through the children of the router.
*
* The pointer can be NULL when there was no request to discover children (in `otMeshDiagDiscoverConfig`) or
* if the router did not provide the list.
*
*/
otMeshDiagChildIterator *mChildIterator;
} otMeshDiagRouterInfo;
/**
* Represents information about a discovered child in Thread mesh using `otMeshDiagDiscoverTopology()`.
*
*/
typedef struct otMeshDiagChildInfo
{
uint16_t mRloc16; ///< RLOC16.
otLinkModeConfig mMode; ///< Device mode.
uint8_t mLinkQuality; ///< Incoming link quality to child from parent.
bool mIsThisDevice : 1; ///< Whether child is this device itself.
bool mIsBorderRouter : 1; ///< Whether child acts as a border router providing ext connectivity.
} otMeshDiagChildInfo;
/**
* Pointer type represents the callback used by `otMeshDiagDiscoverTopology()` to provide information
* about a discovered router.
*
* When @p aError is `OT_ERROR_PENDING`, it indicates that the discovery is not yet finished and there will be more
* routers to discover and the callback will be invoked again.
*
* @param[in] aError OT_ERROR_PENDING Indicates there are more routers to be discovered.
* OT_ERROR_NONE Indicates this is the last router and mesh discovery is done.
* OT_ERROR_RESPONSE_TIMEOUT Timed out waiting for response from one or more routers.
* @param[in] aRouterInfo The discovered router info (can be null if `aError` is OT_ERROR_RESPONSE_TIMEOUT).
* @param[in] aContext Application-specific context.
*
*/
typedef void (*otMeshDiagDiscoverCallback)(otError aError, otMeshDiagRouterInfo *aRouterInfo, void *aContext);
/**
* Starts network topology discovery.
*
* @param[in] aInstance The OpenThread instance.
* @param[in] aConfig The configuration to use for discovery (e.g., which items to discover).
* @param[in] aCallback The callback to report the discovered routers.
* @param[in] aContext A context to pass in @p aCallback.
*
* @retval OT_ERROR_NONE The network topology discovery started successfully.
* @retval OT_ERROR_BUSY A previous discovery request is still ongoing.
* @retval OT_ERROR_INVALID_STATE Device is not attached.
* @retval OT_ERROR_NO_BUFS Could not allocate buffer to send discovery messages.
*
*/
otError otMeshDiagDiscoverTopology(otInstance *aInstance,
const otMeshDiagDiscoverConfig *aConfig,
otMeshDiagDiscoverCallback aCallback,
void *aContext);
/**
* Cancels an ongoing topology discovery if there is one, otherwise no action.
*
* When ongoing discovery is cancelled, the callback from `otMeshDiagDiscoverTopology()` will not be called anymore.
*
*/
void otMeshDiagCancel(otInstance *aInstance);
/**
* Iterates through the discovered IPv6 addresses of a router or an MTD child.
*
* MUST be used
* - from the callback `otMeshDiagDiscoverCallback()` and use the `mIp6AddrIterator` from the `aRouterInfo` struct that
* is provided as input to the callback, or
* - from the callback `otMeshDiagChildIp6AddrsCallback()` along with provided `aIp6AddrIterator`.
*
* @param[in,out] aIterator The address iterator to use.
* @param[out] aIp6Address A pointer to return the next IPv6 address (if any).
*
* @retval OT_ERROR_NONE Successfully retrieved the next address. @p aIp6Address and @p aIterator are updated.
* @retval OT_ERROR_NOT_FOUND No more address. Reached the end of the list.
*
*/
otError otMeshDiagGetNextIp6Address(otMeshDiagIp6AddrIterator *aIterator, otIp6Address *aIp6Address);
/**
* Iterates through the discovered children of a router.
*
* This function MUST be used from the callback `otMeshDiagDiscoverCallback()` and use the `mChildIterator` from the
* `aRouterInfo` struct that is provided as input to the callback.
*
* @param[in,out] aIterator The address iterator to use.
* @param[out] aChildInfo A pointer to return the child info (if any).
*
* @retval OT_ERROR_NONE Successfully retrieved the next child. @p aChildInfo and @p aIterator are updated.
* @retval OT_ERROR_NOT_FOUND No more child. Reached the end of the list.
*
*/
otError otMeshDiagGetNextChildInfo(otMeshDiagChildIterator *aIterator, otMeshDiagChildInfo *aChildInfo);
/**
* Represents information about a child entry from `otMeshDiagQueryChildTable()`.
*
* `mSupportsErrRate` indicates whether or not the error tracking feature is supported and `mFrameErrorRate` and
* `mMessageErrorRate` values are valid. The frame error rate tracks frame tx errors (towards the child) at MAC
* layer, while `mMessageErrorRate` tracks the IPv6 message error rate (above MAC layer and after MAC retries) when
* an IPv6 message is dropped. For example, if the message is large and requires 6LoWPAN fragmentation, message tx is
* considered as failed if one of its fragment frame tx fails (for example, never acked).
*
*/
typedef struct otMeshDiagChildEntry
{
bool mRxOnWhenIdle : 1; ///< Is rx-on when idle (vs sleepy).
bool mDeviceTypeFtd : 1; ///< Is device FTD (vs MTD).
bool mFullNetData : 1; ///< Whether device gets full Network Data (vs stable sub-set).
bool mCslSynchronized : 1; ///< Is CSL capable and CSL synchronized.
bool mSupportsErrRate : 1; ///< `mFrameErrorRate` and `mMessageErrorRate` values are valid.
uint16_t mRloc16; ///< RLOC16.
otExtAddress mExtAddress; ///< Extended Address.
uint16_t mVersion; ///< Version.
uint32_t mTimeout; ///< Timeout in seconds.
uint32_t mAge; ///< Seconds since last heard from the child.
uint32_t mConnectionTime; ///< Seconds since child attach.
uint16_t mSupervisionInterval; ///< Supervision interval in seconds. Zero to indicate not used.
uint8_t mLinkMargin; ///< Link Margin in dB.
int8_t mAverageRssi; ///< Average RSSI.
int8_t mLastRssi; ///< RSSI of last received frame.
uint16_t mFrameErrorRate; ///< Frame error rate (0x0000->0%, 0xffff->100%).
uint16_t mMessageErrorRate; ///< (IPv6) msg error rate (0x0000->0%, 0xffff->100%).
uint16_t mQueuedMessageCount; ///< Number of queued messages for indirect tx to child.
uint16_t mCslPeriod; ///< CSL Period in unit of 10-symbols-time. Zero indicates CSL is disabled.
uint32_t mCslTimeout; ///< CSL Timeout in seconds.
uint8_t mCslChannel; ///< CSL channel.
} otMeshDiagChildEntry;
/**
* Represents the callback used by `otMeshDiagQueryChildTable()` to provide information about child table entries.
*
* When @p aError is `OT_ERROR_PENDING`, it indicates that the table still has more entries and the callback will be
* invoked again.
*
* @param[in] aError OT_ERROR_PENDING Indicates there are more entries in the table.
* OT_ERROR_NONE Indicates the table is finished.
* OT_ERROR_RESPONSE_TIMEOUT Timed out waiting for response.
* @param[in] aChildEntry The child entry (can be null if `aError` is OT_ERROR_RESPONSE_TIMEOUT or OT_ERROR_NONE).
* @param[in] aContext Application-specific context.
*
*/
typedef void (*otMeshDiagQueryChildTableCallback)(otError aError,
const otMeshDiagChildEntry *aChildEntry,
void *aContext);
/**
* Starts query for child table for a given router.
*
* @param[in] aInstance The OpenThread instance.
* @param[in] aRloc16 The RLOC16 of router to query.
* @param[in] aCallback The callback to report the queried child table.
* @param[in] aContext A context to pass in @p aCallback.
*
* @retval OT_ERROR_NONE The query started successfully.
* @retval OT_ERROR_BUSY A previous discovery or query request is still ongoing.
* @retval OT_ERROR_INVALID_ARGS The @p aRloc16 is not a valid router RLOC16.
* @retval OT_ERROR_INVALID_STATE Device is not attached.
* @retval OT_ERROR_NO_BUFS Could not allocate buffer to send query messages.
*
*/
otError otMeshDiagQueryChildTable(otInstance *aInstance,
uint16_t aRloc16,
otMeshDiagQueryChildTableCallback aCallback,
void *aContext);
/**
* Represents the callback used by `otMeshDiagQueryChildrenIp6Addrs()` to provide information about an MTD child and
* its list of IPv6 addresses.
*
* When @p aError is `OT_ERROR_PENDING`, it indicates that there are more children and the callback will be invoked
* again.
*
* @param[in] aError OT_ERROR_PENDING Indicates there are more children in the table.
* OT_ERROR_NONE Indicates the table is finished.
* OT_ERROR_RESPONSE_TIMEOUT Timed out waiting for response.
* @param[in] aChildRloc16 The RLOC16 of the child. `0xfffe` is used on `OT_ERROR_RESPONSE_TIMEOUT`.
* @param[in] aIp6AddrIterator An iterator to go through the IPv6 addresses of the child with @p aRloc using
* `otMeshDiagGetNextIp6Address()`. Set to NULL on `OT_ERROR_RESPONSE_TIMEOUT`.
* @param[in] aContext Application-specific context.
*
*/
typedef void (*otMeshDiagChildIp6AddrsCallback)(otError aError,
uint16_t aChildRloc16,
otMeshDiagIp6AddrIterator *aIp6AddrIterator,
void *aContext);
/**
* Sends a query to a parent to retrieve the IPv6 addresses of all its MTD children.
*
* @param[in] aInstance The OpenThread instance.
* @param[in] aRloc16 The RLOC16 of parent to query.
* @param[in] aCallback The callback to report the queried child IPv6 address list.
* @param[in] aContext A context to pass in @p aCallback.
*
* @retval OT_ERROR_NONE The query started successfully.
* @retval OT_ERROR_BUSY A previous discovery or query request is still ongoing.
* @retval OT_ERROR_INVALID_ARGS The @p aRloc16 is not a valid RLOC16.
* @retval OT_ERROR_INVALID_STATE Device is not attached.
* @retval OT_ERROR_NO_BUFS Could not allocate buffer to send query messages.
*
*/
otError otMeshDiagQueryChildrenIp6Addrs(otInstance *aInstance,
uint16_t aRloc16,
otMeshDiagChildIp6AddrsCallback aCallback,
void *aContext);
/**
* Represents information about a router neighbor entry from `otMeshDiagQueryRouterNeighborTable()`.
*
* `mSupportsErrRate` indicates whether or not the error tracking feature is supported and `mFrameErrorRate` and
* `mMessageErrorRate` values are valid. The frame error rate tracks frame tx errors (towards the child) at MAC
* layer, while `mMessageErrorRate` tracks the IPv6 message error rate (above MAC layer and after MAC retries) when
* an IPv6 message is dropped. For example, if the message is large and requires 6LoWPAN fragmentation, message tx is
* considered as failed if one of its fragment frame tx fails (for example, never acked).
*
*/
typedef struct otMeshDiagRouterNeighborEntry
{
bool mSupportsErrRate : 1; ///< `mFrameErrorRate` and `mMessageErrorRate` values are valid.
uint16_t mRloc16; ///< RLOC16.
otExtAddress mExtAddress; ///< Extended Address.
uint16_t mVersion; ///< Version.
uint32_t mConnectionTime; ///< Seconds since link establishment.
uint8_t mLinkMargin; ///< Link Margin in dB.
int8_t mAverageRssi; ///< Average RSSI.
int8_t mLastRssi; ///< RSSI of last received frame.
uint16_t mFrameErrorRate; ///< Frame error rate (0x0000->0%, 0xffff->100%).
uint16_t mMessageErrorRate; ///< (IPv6) msg error rate (0x0000->0%, 0xffff->100%).
} otMeshDiagRouterNeighborEntry;
/**
* Represents the callback used by `otMeshDiagQueryRouterNeighborTable()` to provide information about neighbor router
* table entries.
*
* When @p aError is `OT_ERROR_PENDING`, it indicates that the table still has more entries and the callback will be
* invoked again.
*
* @param[in] aError OT_ERROR_PENDING Indicates there are more entries in the table.
* OT_ERROR_NONE Indicates the table is finished.
* OT_ERROR_RESPONSE_TIMEOUT Timed out waiting for response.
* @param[in] aNeighborEntry The neighbor entry (can be null if `aError` is RESPONSE_TIMEOUT or NONE).
* @param[in] aContext Application-specific context.
*
*/
typedef void (*otMeshDiagQueryRouterNeighborTableCallback)(otError aError,
const otMeshDiagRouterNeighborEntry *aNeighborEntry,
void *aContext);
/**
* Starts query for router neighbor table for a given router.
*
* @param[in] aInstance The OpenThread instance.
* @param[in] aRloc16 The RLOC16 of router to query.
* @param[in] aCallback The callback to report the queried table.
* @param[in] aContext A context to pass in @p aCallback.
*
* @retval OT_ERROR_NONE The query started successfully.
* @retval OT_ERROR_BUSY A previous discovery or query request is still ongoing.
* @retval OT_ERROR_INVALID_ARGS The @p aRloc16 is not a valid router RLOC16.
* @retval OT_ERROR_INVALID_STATE Device is not attached.
* @retval OT_ERROR_NO_BUFS Could not allocate buffer to send query messages.
*
*/
otError otMeshDiagQueryRouterNeighborTable(otInstance *aInstance,
uint16_t aRloc16,
otMeshDiagQueryRouterNeighborTableCallback aCallback,
void *aContext);
/**
* @}
*
*/
#ifdef __cplusplus
} // extern "C"
#endif
#endif // OPENTHREAD_MESH_DIAG_H_