9a182242f1
The B.A.T.M.A.N. V implementation tries to estimate the link throughput of an interface to an originator using different automatic methods. It is still possible to overwrite it the link throughput for all reachable originators via this interface. The BATADV_CMD_SET_HARDIF/BATADV_CMD_GET_HARDIF commands allow to set/get the configuration of this feature using the u32 BATADV_ATTR_THROUGHPUT_OVERRIDE attribute. The used unit is in 100 Kbit/s. If the value is set to 0 then batman-adv will try to estimate the throughput by itself. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
689 lines
17 KiB
C
689 lines
17 KiB
C
/* SPDX-License-Identifier: MIT */
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/* Copyright (C) 2016-2019 B.A.T.M.A.N. contributors:
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*
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* Matthias Schiffer
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _UAPI_LINUX_BATMAN_ADV_H_
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#define _UAPI_LINUX_BATMAN_ADV_H_
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#define BATADV_NL_NAME "batadv"
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#define BATADV_NL_MCAST_GROUP_CONFIG "config"
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#define BATADV_NL_MCAST_GROUP_TPMETER "tpmeter"
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/**
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* enum batadv_tt_client_flags - TT client specific flags
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*
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* Bits from 0 to 7 are called _remote flags_ because they are sent on the wire.
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* Bits from 8 to 15 are called _local flags_ because they are used for local
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* computations only.
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*
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* Bits from 4 to 7 - a subset of remote flags - are ensured to be in sync with
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* the other nodes in the network. To achieve this goal these flags are included
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* in the TT CRC computation.
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*/
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enum batadv_tt_client_flags {
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/**
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* @BATADV_TT_CLIENT_DEL: the client has to be deleted from the table
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*/
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BATADV_TT_CLIENT_DEL = (1 << 0),
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/**
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* @BATADV_TT_CLIENT_ROAM: the client roamed to/from another node and
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* the new update telling its new real location has not been
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* received/sent yet
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*/
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BATADV_TT_CLIENT_ROAM = (1 << 1),
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/**
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* @BATADV_TT_CLIENT_WIFI: this client is connected through a wifi
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* interface. This information is used by the "AP Isolation" feature
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*/
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BATADV_TT_CLIENT_WIFI = (1 << 4),
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/**
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* @BATADV_TT_CLIENT_ISOLA: this client is considered "isolated". This
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* information is used by the Extended Isolation feature
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*/
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BATADV_TT_CLIENT_ISOLA = (1 << 5),
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/**
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* @BATADV_TT_CLIENT_NOPURGE: this client should never be removed from
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* the table
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*/
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BATADV_TT_CLIENT_NOPURGE = (1 << 8),
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/**
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* @BATADV_TT_CLIENT_NEW: this client has been added to the local table
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* but has not been announced yet
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*/
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BATADV_TT_CLIENT_NEW = (1 << 9),
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/**
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* @BATADV_TT_CLIENT_PENDING: this client is marked for removal but it
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* is kept in the table for one more originator interval for consistency
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* purposes
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*/
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BATADV_TT_CLIENT_PENDING = (1 << 10),
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/**
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* @BATADV_TT_CLIENT_TEMP: this global client has been detected to be
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* part of the network but no nnode has already announced it
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*/
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BATADV_TT_CLIENT_TEMP = (1 << 11),
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};
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/**
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* enum batadv_mcast_flags_priv - Private, own multicast flags
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*
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* These are internal, multicast related flags. Currently they describe certain
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* multicast related attributes of the segment this originator bridges into the
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* mesh.
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*
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* Those attributes are used to determine the public multicast flags this
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* originator is going to announce via TT.
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*
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* For netlink, if BATADV_MCAST_FLAGS_BRIDGED is unset then all querier
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* related flags are undefined.
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*/
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enum batadv_mcast_flags_priv {
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/**
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* @BATADV_MCAST_FLAGS_BRIDGED: There is a bridge on top of the mesh
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* interface.
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*/
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BATADV_MCAST_FLAGS_BRIDGED = (1 << 0),
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/**
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* @BATADV_MCAST_FLAGS_QUERIER_IPV4_EXISTS: Whether an IGMP querier
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* exists in the mesh
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*/
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BATADV_MCAST_FLAGS_QUERIER_IPV4_EXISTS = (1 << 1),
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/**
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* @BATADV_MCAST_FLAGS_QUERIER_IPV6_EXISTS: Whether an MLD querier
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* exists in the mesh
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*/
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BATADV_MCAST_FLAGS_QUERIER_IPV6_EXISTS = (1 << 2),
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/**
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* @BATADV_MCAST_FLAGS_QUERIER_IPV4_SHADOWING: If an IGMP querier
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* exists, whether it is potentially shadowing multicast listeners
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* (i.e. querier is behind our own bridge segment)
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*/
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BATADV_MCAST_FLAGS_QUERIER_IPV4_SHADOWING = (1 << 3),
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/**
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* @BATADV_MCAST_FLAGS_QUERIER_IPV6_SHADOWING: If an MLD querier
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* exists, whether it is potentially shadowing multicast listeners
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* (i.e. querier is behind our own bridge segment)
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*/
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BATADV_MCAST_FLAGS_QUERIER_IPV6_SHADOWING = (1 << 4),
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};
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/**
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* enum batadv_gw_modes - gateway mode of node
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*/
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enum batadv_gw_modes {
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/** @BATADV_GW_MODE_OFF: gw mode disabled */
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BATADV_GW_MODE_OFF,
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/** @BATADV_GW_MODE_CLIENT: send DHCP requests to gw servers */
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BATADV_GW_MODE_CLIENT,
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/** @BATADV_GW_MODE_SERVER: announce itself as gatway server */
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BATADV_GW_MODE_SERVER,
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};
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/**
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* enum batadv_nl_attrs - batman-adv netlink attributes
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*/
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enum batadv_nl_attrs {
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/**
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* @BATADV_ATTR_UNSPEC: unspecified attribute to catch errors
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*/
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BATADV_ATTR_UNSPEC,
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/**
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* @BATADV_ATTR_VERSION: batman-adv version string
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*/
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BATADV_ATTR_VERSION,
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/**
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* @BATADV_ATTR_ALGO_NAME: name of routing algorithm
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*/
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BATADV_ATTR_ALGO_NAME,
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/**
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* @BATADV_ATTR_MESH_IFINDEX: index of the batman-adv interface
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*/
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BATADV_ATTR_MESH_IFINDEX,
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/**
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* @BATADV_ATTR_MESH_IFNAME: name of the batman-adv interface
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*/
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BATADV_ATTR_MESH_IFNAME,
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/**
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* @BATADV_ATTR_MESH_ADDRESS: mac address of the batman-adv interface
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*/
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BATADV_ATTR_MESH_ADDRESS,
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/**
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* @BATADV_ATTR_HARD_IFINDEX: index of the non-batman-adv interface
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*/
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BATADV_ATTR_HARD_IFINDEX,
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/**
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* @BATADV_ATTR_HARD_IFNAME: name of the non-batman-adv interface
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*/
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BATADV_ATTR_HARD_IFNAME,
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/**
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* @BATADV_ATTR_HARD_ADDRESS: mac address of the non-batman-adv
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* interface
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*/
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BATADV_ATTR_HARD_ADDRESS,
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/**
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* @BATADV_ATTR_ORIG_ADDRESS: originator mac address
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*/
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BATADV_ATTR_ORIG_ADDRESS,
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/**
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* @BATADV_ATTR_TPMETER_RESULT: result of run (see
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* batadv_tp_meter_status)
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*/
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BATADV_ATTR_TPMETER_RESULT,
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/**
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* @BATADV_ATTR_TPMETER_TEST_TIME: time (msec) the run took
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*/
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BATADV_ATTR_TPMETER_TEST_TIME,
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/**
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* @BATADV_ATTR_TPMETER_BYTES: amount of acked bytes during run
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*/
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BATADV_ATTR_TPMETER_BYTES,
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/**
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* @BATADV_ATTR_TPMETER_COOKIE: session cookie to match tp_meter session
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*/
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BATADV_ATTR_TPMETER_COOKIE,
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/**
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* @BATADV_ATTR_PAD: attribute used for padding for 64-bit alignment
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*/
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BATADV_ATTR_PAD,
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/**
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* @BATADV_ATTR_ACTIVE: Flag indicating if the hard interface is active
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*/
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BATADV_ATTR_ACTIVE,
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/**
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* @BATADV_ATTR_TT_ADDRESS: Client MAC address
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*/
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BATADV_ATTR_TT_ADDRESS,
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/**
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* @BATADV_ATTR_TT_TTVN: Translation table version
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*/
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BATADV_ATTR_TT_TTVN,
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/**
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* @BATADV_ATTR_TT_LAST_TTVN: Previous translation table version
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*/
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BATADV_ATTR_TT_LAST_TTVN,
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/**
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* @BATADV_ATTR_TT_CRC32: CRC32 over translation table
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*/
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BATADV_ATTR_TT_CRC32,
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/**
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* @BATADV_ATTR_TT_VID: VLAN ID
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*/
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BATADV_ATTR_TT_VID,
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/**
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* @BATADV_ATTR_TT_FLAGS: Translation table client flags
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*/
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BATADV_ATTR_TT_FLAGS,
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/**
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* @BATADV_ATTR_FLAG_BEST: Flags indicating entry is the best
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*/
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BATADV_ATTR_FLAG_BEST,
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/**
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* @BATADV_ATTR_LAST_SEEN_MSECS: Time in milliseconds since last seen
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*/
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BATADV_ATTR_LAST_SEEN_MSECS,
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/**
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* @BATADV_ATTR_NEIGH_ADDRESS: Neighbour MAC address
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*/
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BATADV_ATTR_NEIGH_ADDRESS,
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/**
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* @BATADV_ATTR_TQ: TQ to neighbour
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*/
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BATADV_ATTR_TQ,
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/**
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* @BATADV_ATTR_THROUGHPUT: Estimated throughput to Neighbour
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*/
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BATADV_ATTR_THROUGHPUT,
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/**
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* @BATADV_ATTR_BANDWIDTH_UP: Reported uplink bandwidth
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*/
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BATADV_ATTR_BANDWIDTH_UP,
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/**
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* @BATADV_ATTR_BANDWIDTH_DOWN: Reported downlink bandwidth
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*/
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BATADV_ATTR_BANDWIDTH_DOWN,
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/**
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* @BATADV_ATTR_ROUTER: Gateway router MAC address
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*/
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BATADV_ATTR_ROUTER,
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/**
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* @BATADV_ATTR_BLA_OWN: Flag indicating own originator
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*/
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BATADV_ATTR_BLA_OWN,
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/**
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* @BATADV_ATTR_BLA_ADDRESS: Bridge loop avoidance claim MAC address
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*/
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BATADV_ATTR_BLA_ADDRESS,
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/**
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* @BATADV_ATTR_BLA_VID: BLA VLAN ID
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*/
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BATADV_ATTR_BLA_VID,
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/**
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* @BATADV_ATTR_BLA_BACKBONE: BLA gateway originator MAC address
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*/
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BATADV_ATTR_BLA_BACKBONE,
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/**
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* @BATADV_ATTR_BLA_CRC: BLA CRC
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*/
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BATADV_ATTR_BLA_CRC,
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/**
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* @BATADV_ATTR_DAT_CACHE_IP4ADDRESS: Client IPv4 address
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*/
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BATADV_ATTR_DAT_CACHE_IP4ADDRESS,
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/**
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* @BATADV_ATTR_DAT_CACHE_HWADDRESS: Client MAC address
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*/
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BATADV_ATTR_DAT_CACHE_HWADDRESS,
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/**
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* @BATADV_ATTR_DAT_CACHE_VID: VLAN ID
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*/
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BATADV_ATTR_DAT_CACHE_VID,
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/**
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* @BATADV_ATTR_MCAST_FLAGS: Per originator multicast flags
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*/
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BATADV_ATTR_MCAST_FLAGS,
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/**
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* @BATADV_ATTR_MCAST_FLAGS_PRIV: Private, own multicast flags
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*/
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BATADV_ATTR_MCAST_FLAGS_PRIV,
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/**
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* @BATADV_ATTR_VLANID: VLAN id on top of soft interface
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*/
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BATADV_ATTR_VLANID,
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/**
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* @BATADV_ATTR_AGGREGATED_OGMS_ENABLED: whether the batman protocol
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* messages of the mesh interface shall be aggregated or not.
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*/
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BATADV_ATTR_AGGREGATED_OGMS_ENABLED,
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/**
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* @BATADV_ATTR_AP_ISOLATION_ENABLED: whether the data traffic going
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* from a wireless client to another wireless client will be silently
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* dropped.
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*/
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BATADV_ATTR_AP_ISOLATION_ENABLED,
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/**
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* @BATADV_ATTR_ISOLATION_MARK: the isolation mark which is used to
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* classify clients as "isolated" by the Extended Isolation feature.
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*/
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BATADV_ATTR_ISOLATION_MARK,
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/**
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* @BATADV_ATTR_ISOLATION_MASK: the isolation (bit)mask which is used to
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* classify clients as "isolated" by the Extended Isolation feature.
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*/
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BATADV_ATTR_ISOLATION_MASK,
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/**
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* @BATADV_ATTR_BONDING_ENABLED: whether the data traffic going through
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* the mesh will be sent using multiple interfaces at the same time.
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*/
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BATADV_ATTR_BONDING_ENABLED,
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/**
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* @BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED: whether the bridge loop
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* avoidance feature is enabled. This feature detects and avoids loops
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* between the mesh and devices bridged with the soft interface
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*/
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BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED,
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/**
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* @BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED: whether the distributed
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* arp table feature is enabled. This feature uses a distributed hash
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* table to answer ARP requests without flooding the request through
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* the whole mesh.
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*/
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BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED,
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/**
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* @BATADV_ATTR_FRAGMENTATION_ENABLED: whether the data traffic going
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* through the mesh will be fragmented or silently discarded if the
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* packet size exceeds the outgoing interface MTU.
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*/
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BATADV_ATTR_FRAGMENTATION_ENABLED,
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/**
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* @BATADV_ATTR_GW_BANDWIDTH_DOWN: defines the download bandwidth which
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* is propagated by this node if %BATADV_ATTR_GW_BANDWIDTH_MODE was set
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* to 'server'.
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*/
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BATADV_ATTR_GW_BANDWIDTH_DOWN,
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/**
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* @BATADV_ATTR_GW_BANDWIDTH_UP: defines the upload bandwidth which
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* is propagated by this node if %BATADV_ATTR_GW_BANDWIDTH_MODE was set
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* to 'server'.
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*/
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BATADV_ATTR_GW_BANDWIDTH_UP,
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/**
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* @BATADV_ATTR_GW_MODE: defines the state of the gateway features.
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* Possible values are specified in enum batadv_gw_modes
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*/
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BATADV_ATTR_GW_MODE,
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/**
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* @BATADV_ATTR_GW_SEL_CLASS: defines the selection criteria this node
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* will use to choose a gateway if gw_mode was set to 'client'.
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*/
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BATADV_ATTR_GW_SEL_CLASS,
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/**
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* @BATADV_ATTR_HOP_PENALTY: defines the penalty which will be applied
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* to an originator message's tq-field on every hop.
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*/
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BATADV_ATTR_HOP_PENALTY,
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/**
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* @BATADV_ATTR_LOG_LEVEL: bitmask with to define which debug messages
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* should be send to the debug log/trace ring buffer
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*/
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BATADV_ATTR_LOG_LEVEL,
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/**
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* @BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED: whether multicast
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* optimizations should be replaced by simple broadcast-like flooding
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* of multicast packets. If set to non-zero then all nodes in the mesh
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* are going to use classic flooding for any multicast packet with no
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* optimizations.
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*/
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BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED,
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/**
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* @BATADV_ATTR_NETWORK_CODING_ENABLED: whether Network Coding (using
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* some magic to send fewer wifi packets but still the same content) is
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* enabled or not.
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*/
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BATADV_ATTR_NETWORK_CODING_ENABLED,
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/**
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* @BATADV_ATTR_ORIG_INTERVAL: defines the interval in milliseconds in
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* which batman sends its protocol messages.
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*/
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BATADV_ATTR_ORIG_INTERVAL,
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/**
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* @BATADV_ATTR_ELP_INTERVAL: defines the interval in milliseconds in
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* which batman emits probing packets for neighbor sensing (ELP).
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*/
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BATADV_ATTR_ELP_INTERVAL,
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/**
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* @BATADV_ATTR_THROUGHPUT_OVERRIDE: defines the throughput value to be
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* used by B.A.T.M.A.N. V when estimating the link throughput using
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* this interface. If the value is set to 0 then batman-adv will try to
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* estimate the throughput by itself.
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*/
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BATADV_ATTR_THROUGHPUT_OVERRIDE,
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/* add attributes above here, update the policy in netlink.c */
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/**
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* @__BATADV_ATTR_AFTER_LAST: internal use
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|
*/
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__BATADV_ATTR_AFTER_LAST,
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|
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/**
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* @NUM_BATADV_ATTR: total number of batadv_nl_attrs available
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|
*/
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NUM_BATADV_ATTR = __BATADV_ATTR_AFTER_LAST,
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|
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/**
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* @BATADV_ATTR_MAX: highest attribute number currently defined
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|
*/
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BATADV_ATTR_MAX = __BATADV_ATTR_AFTER_LAST - 1
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};
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|
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/**
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* enum batadv_nl_commands - supported batman-adv netlink commands
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|
*/
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enum batadv_nl_commands {
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/**
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* @BATADV_CMD_UNSPEC: unspecified command to catch errors
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*/
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BATADV_CMD_UNSPEC,
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|
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/**
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* @BATADV_CMD_GET_MESH: Get attributes from softif/mesh
|
|
*/
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BATADV_CMD_GET_MESH,
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|
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/**
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* @BATADV_CMD_GET_MESH_INFO: Alias for @BATADV_CMD_GET_MESH
|
|
*/
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BATADV_CMD_GET_MESH_INFO = BATADV_CMD_GET_MESH,
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|
|
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/**
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* @BATADV_CMD_TP_METER: Start a tp meter session
|
|
*/
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|
BATADV_CMD_TP_METER,
|
|
|
|
/**
|
|
* @BATADV_CMD_TP_METER_CANCEL: Cancel a tp meter session
|
|
*/
|
|
BATADV_CMD_TP_METER_CANCEL,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_ROUTING_ALGOS: Query the list of routing algorithms.
|
|
*/
|
|
BATADV_CMD_GET_ROUTING_ALGOS,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_HARDIF: Get attributes from a hardif of the
|
|
* current softif
|
|
*/
|
|
BATADV_CMD_GET_HARDIF,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_HARDIFS: Alias for @BATADV_CMD_GET_HARDIF
|
|
*/
|
|
BATADV_CMD_GET_HARDIFS = BATADV_CMD_GET_HARDIF,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_TRANSTABLE_LOCAL: Query list of local translations
|
|
*/
|
|
BATADV_CMD_GET_TRANSTABLE_LOCAL,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_TRANSTABLE_GLOBAL: Query list of global translations
|
|
*/
|
|
BATADV_CMD_GET_TRANSTABLE_GLOBAL,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_ORIGINATORS: Query list of originators
|
|
*/
|
|
BATADV_CMD_GET_ORIGINATORS,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_NEIGHBORS: Query list of neighbours
|
|
*/
|
|
BATADV_CMD_GET_NEIGHBORS,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_GATEWAYS: Query list of gateways
|
|
*/
|
|
BATADV_CMD_GET_GATEWAYS,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_BLA_CLAIM: Query list of bridge loop avoidance claims
|
|
*/
|
|
BATADV_CMD_GET_BLA_CLAIM,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_BLA_BACKBONE: Query list of bridge loop avoidance
|
|
* backbones
|
|
*/
|
|
BATADV_CMD_GET_BLA_BACKBONE,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_DAT_CACHE: Query list of DAT cache entries
|
|
*/
|
|
BATADV_CMD_GET_DAT_CACHE,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_MCAST_FLAGS: Query list of multicast flags
|
|
*/
|
|
BATADV_CMD_GET_MCAST_FLAGS,
|
|
|
|
/**
|
|
* @BATADV_CMD_SET_MESH: Set attributes for softif/mesh
|
|
*/
|
|
BATADV_CMD_SET_MESH,
|
|
|
|
/**
|
|
* @BATADV_CMD_SET_HARDIF: Set attributes for hardif of the
|
|
* current softif
|
|
*/
|
|
BATADV_CMD_SET_HARDIF,
|
|
|
|
/**
|
|
* @BATADV_CMD_GET_VLAN: Get attributes from a VLAN of the
|
|
* current softif
|
|
*/
|
|
BATADV_CMD_GET_VLAN,
|
|
|
|
/**
|
|
* @BATADV_CMD_SET_VLAN: Set attributes for VLAN of the
|
|
* current softif
|
|
*/
|
|
BATADV_CMD_SET_VLAN,
|
|
|
|
/* add new commands above here */
|
|
|
|
/**
|
|
* @__BATADV_CMD_AFTER_LAST: internal use
|
|
*/
|
|
__BATADV_CMD_AFTER_LAST,
|
|
|
|
/**
|
|
* @BATADV_CMD_MAX: highest used command number
|
|
*/
|
|
BATADV_CMD_MAX = __BATADV_CMD_AFTER_LAST - 1
|
|
};
|
|
|
|
/**
|
|
* enum batadv_tp_meter_reason - reason of a tp meter test run stop
|
|
*/
|
|
enum batadv_tp_meter_reason {
|
|
/**
|
|
* @BATADV_TP_REASON_COMPLETE: sender finished tp run
|
|
*/
|
|
BATADV_TP_REASON_COMPLETE = 3,
|
|
|
|
/**
|
|
* @BATADV_TP_REASON_CANCEL: sender was stopped during run
|
|
*/
|
|
BATADV_TP_REASON_CANCEL = 4,
|
|
|
|
/* error status >= 128 */
|
|
|
|
/**
|
|
* @BATADV_TP_REASON_DST_UNREACHABLE: receiver could not be reached or
|
|
* didn't answer
|
|
*/
|
|
BATADV_TP_REASON_DST_UNREACHABLE = 128,
|
|
|
|
/**
|
|
* @BATADV_TP_REASON_RESEND_LIMIT: (unused) sender retry reached limit
|
|
*/
|
|
BATADV_TP_REASON_RESEND_LIMIT = 129,
|
|
|
|
/**
|
|
* @BATADV_TP_REASON_ALREADY_ONGOING: test to or from the same node
|
|
* already ongoing
|
|
*/
|
|
BATADV_TP_REASON_ALREADY_ONGOING = 130,
|
|
|
|
/**
|
|
* @BATADV_TP_REASON_MEMORY_ERROR: test was stopped due to low memory
|
|
*/
|
|
BATADV_TP_REASON_MEMORY_ERROR = 131,
|
|
|
|
/**
|
|
* @BATADV_TP_REASON_CANT_SEND: failed to send via outgoing interface
|
|
*/
|
|
BATADV_TP_REASON_CANT_SEND = 132,
|
|
|
|
/**
|
|
* @BATADV_TP_REASON_TOO_MANY: too many ongoing sessions
|
|
*/
|
|
BATADV_TP_REASON_TOO_MANY = 133,
|
|
};
|
|
|
|
#endif /* _UAPI_LINUX_BATMAN_ADV_H_ */
|