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95de817b90
To track authenticated state seems to have been a design mistake in cfg80211. It is possible to have out of band authentication (FT), tracking multiple authentications caused more problems than it ever helped, and the implementation in mac80211 is too complex. Remove all this complexity, and let userspace do whatever it wants to, mac80211 can deal with that just fine. Association is still tracked of course, but authentication no longer is. Local auth state changes are thus no longer of value, so ignore them completely. This will also help implement SAE -- asking the driver to do an authentication is now almost equivalent to sending an authentication frame, with the exception of shared key authentication which is still handled completely. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
584 lines
21 KiB
XML
584 lines
21 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE set PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
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<set>
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<setinfo>
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<title>The 802.11 subsystems – for kernel developers</title>
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<subtitle>
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Explaining wireless 802.11 networking in the Linux kernel
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</subtitle>
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<copyright>
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<year>2007-2009</year>
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<holder>Johannes Berg</holder>
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</copyright>
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<authorgroup>
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<author>
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<firstname>Johannes</firstname>
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<surname>Berg</surname>
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<affiliation>
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<address><email>johannes@sipsolutions.net</email></address>
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</affiliation>
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</author>
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</authorgroup>
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<legalnotice>
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<para>
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This documentation is free software; you can redistribute
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it and/or modify it under the terms of the GNU General Public
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License version 2 as published by the Free Software Foundation.
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</para>
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<para>
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This documentation is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied
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warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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</para>
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<para>
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You should have received a copy of the GNU General Public
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License along with this documentation; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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MA 02111-1307 USA
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</para>
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<para>
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For more details see the file COPYING in the source
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distribution of Linux.
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</para>
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</legalnotice>
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|
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<abstract>
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<para>
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These books attempt to give a description of the
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various subsystems that play a role in 802.11 wireless
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networking in Linux. Since these books are for kernel
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developers they attempts to document the structures
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and functions used in the kernel as well as giving a
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higher-level overview.
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</para>
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<para>
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The reader is expected to be familiar with the 802.11
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standard as published by the IEEE in 802.11-2007 (or
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possibly later versions). References to this standard
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will be given as "802.11-2007 8.1.5".
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</para>
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</abstract>
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</setinfo>
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<book id="cfg80211-developers-guide">
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<bookinfo>
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<title>The cfg80211 subsystem</title>
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<abstract>
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!Pinclude/net/cfg80211.h Introduction
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</abstract>
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</bookinfo>
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<chapter>
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<title>Device registration</title>
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!Pinclude/net/cfg80211.h Device registration
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!Finclude/net/cfg80211.h ieee80211_band
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!Finclude/net/cfg80211.h ieee80211_channel_flags
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!Finclude/net/cfg80211.h ieee80211_channel
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!Finclude/net/cfg80211.h ieee80211_rate_flags
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!Finclude/net/cfg80211.h ieee80211_rate
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!Finclude/net/cfg80211.h ieee80211_sta_ht_cap
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!Finclude/net/cfg80211.h ieee80211_supported_band
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!Finclude/net/cfg80211.h cfg80211_signal_type
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!Finclude/net/cfg80211.h wiphy_params_flags
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!Finclude/net/cfg80211.h wiphy_flags
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!Finclude/net/cfg80211.h wiphy
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!Finclude/net/cfg80211.h wireless_dev
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!Finclude/net/cfg80211.h wiphy_new
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!Finclude/net/cfg80211.h wiphy_register
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!Finclude/net/cfg80211.h wiphy_unregister
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!Finclude/net/cfg80211.h wiphy_free
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!Finclude/net/cfg80211.h wiphy_name
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!Finclude/net/cfg80211.h wiphy_dev
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!Finclude/net/cfg80211.h wiphy_priv
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!Finclude/net/cfg80211.h priv_to_wiphy
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!Finclude/net/cfg80211.h set_wiphy_dev
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!Finclude/net/cfg80211.h wdev_priv
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</chapter>
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<chapter>
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<title>Actions and configuration</title>
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!Pinclude/net/cfg80211.h Actions and configuration
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!Finclude/net/cfg80211.h cfg80211_ops
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!Finclude/net/cfg80211.h vif_params
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!Finclude/net/cfg80211.h key_params
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!Finclude/net/cfg80211.h survey_info_flags
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!Finclude/net/cfg80211.h survey_info
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!Finclude/net/cfg80211.h beacon_parameters
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!Finclude/net/cfg80211.h plink_actions
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!Finclude/net/cfg80211.h station_parameters
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!Finclude/net/cfg80211.h station_info_flags
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!Finclude/net/cfg80211.h rate_info_flags
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!Finclude/net/cfg80211.h rate_info
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!Finclude/net/cfg80211.h station_info
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!Finclude/net/cfg80211.h monitor_flags
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!Finclude/net/cfg80211.h mpath_info_flags
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!Finclude/net/cfg80211.h mpath_info
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!Finclude/net/cfg80211.h bss_parameters
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!Finclude/net/cfg80211.h ieee80211_txq_params
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!Finclude/net/cfg80211.h cfg80211_crypto_settings
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!Finclude/net/cfg80211.h cfg80211_auth_request
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!Finclude/net/cfg80211.h cfg80211_assoc_request
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!Finclude/net/cfg80211.h cfg80211_deauth_request
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!Finclude/net/cfg80211.h cfg80211_disassoc_request
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!Finclude/net/cfg80211.h cfg80211_ibss_params
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!Finclude/net/cfg80211.h cfg80211_connect_params
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!Finclude/net/cfg80211.h cfg80211_pmksa
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!Finclude/net/cfg80211.h cfg80211_send_rx_auth
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!Finclude/net/cfg80211.h cfg80211_send_auth_timeout
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!Finclude/net/cfg80211.h cfg80211_send_rx_assoc
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!Finclude/net/cfg80211.h cfg80211_send_assoc_timeout
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!Finclude/net/cfg80211.h cfg80211_send_deauth
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!Finclude/net/cfg80211.h __cfg80211_send_deauth
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!Finclude/net/cfg80211.h cfg80211_send_disassoc
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!Finclude/net/cfg80211.h __cfg80211_send_disassoc
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!Finclude/net/cfg80211.h cfg80211_ibss_joined
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!Finclude/net/cfg80211.h cfg80211_connect_result
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!Finclude/net/cfg80211.h cfg80211_roamed
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!Finclude/net/cfg80211.h cfg80211_disconnected
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!Finclude/net/cfg80211.h cfg80211_ready_on_channel
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!Finclude/net/cfg80211.h cfg80211_remain_on_channel_expired
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!Finclude/net/cfg80211.h cfg80211_new_sta
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!Finclude/net/cfg80211.h cfg80211_rx_mgmt
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!Finclude/net/cfg80211.h cfg80211_mgmt_tx_status
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!Finclude/net/cfg80211.h cfg80211_cqm_rssi_notify
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!Finclude/net/cfg80211.h cfg80211_cqm_pktloss_notify
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!Finclude/net/cfg80211.h cfg80211_michael_mic_failure
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</chapter>
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<chapter>
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<title>Scanning and BSS list handling</title>
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!Pinclude/net/cfg80211.h Scanning and BSS list handling
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!Finclude/net/cfg80211.h cfg80211_ssid
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!Finclude/net/cfg80211.h cfg80211_scan_request
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!Finclude/net/cfg80211.h cfg80211_scan_done
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!Finclude/net/cfg80211.h cfg80211_bss
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!Finclude/net/cfg80211.h cfg80211_inform_bss_frame
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!Finclude/net/cfg80211.h cfg80211_inform_bss
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!Finclude/net/cfg80211.h cfg80211_unlink_bss
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!Finclude/net/cfg80211.h cfg80211_find_ie
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!Finclude/net/cfg80211.h ieee80211_bss_get_ie
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</chapter>
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<chapter>
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<title>Utility functions</title>
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!Pinclude/net/cfg80211.h Utility functions
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!Finclude/net/cfg80211.h ieee80211_channel_to_frequency
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!Finclude/net/cfg80211.h ieee80211_frequency_to_channel
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!Finclude/net/cfg80211.h ieee80211_get_channel
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!Finclude/net/cfg80211.h ieee80211_get_response_rate
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!Finclude/net/cfg80211.h ieee80211_hdrlen
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!Finclude/net/cfg80211.h ieee80211_get_hdrlen_from_skb
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!Finclude/net/cfg80211.h ieee80211_radiotap_iterator
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</chapter>
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<chapter>
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<title>Data path helpers</title>
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!Pinclude/net/cfg80211.h Data path helpers
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!Finclude/net/cfg80211.h ieee80211_data_to_8023
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!Finclude/net/cfg80211.h ieee80211_data_from_8023
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!Finclude/net/cfg80211.h ieee80211_amsdu_to_8023s
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!Finclude/net/cfg80211.h cfg80211_classify8021d
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</chapter>
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<chapter>
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<title>Regulatory enforcement infrastructure</title>
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!Pinclude/net/cfg80211.h Regulatory enforcement infrastructure
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!Finclude/net/cfg80211.h regulatory_hint
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!Finclude/net/cfg80211.h wiphy_apply_custom_regulatory
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!Finclude/net/cfg80211.h freq_reg_info
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</chapter>
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<chapter>
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<title>RFkill integration</title>
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!Pinclude/net/cfg80211.h RFkill integration
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!Finclude/net/cfg80211.h wiphy_rfkill_set_hw_state
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!Finclude/net/cfg80211.h wiphy_rfkill_start_polling
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!Finclude/net/cfg80211.h wiphy_rfkill_stop_polling
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</chapter>
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<chapter>
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<title>Test mode</title>
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!Pinclude/net/cfg80211.h Test mode
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!Finclude/net/cfg80211.h cfg80211_testmode_alloc_reply_skb
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!Finclude/net/cfg80211.h cfg80211_testmode_reply
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!Finclude/net/cfg80211.h cfg80211_testmode_alloc_event_skb
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!Finclude/net/cfg80211.h cfg80211_testmode_event
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</chapter>
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</book>
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<book id="mac80211-developers-guide">
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<bookinfo>
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<title>The mac80211 subsystem</title>
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<abstract>
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!Pinclude/net/mac80211.h Introduction
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!Pinclude/net/mac80211.h Warning
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</abstract>
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</bookinfo>
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<toc></toc>
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<!--
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Generally, this document shall be ordered by increasing complexity.
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It is important to note that readers should be able to read only
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the first few sections to get a working driver and only advanced
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usage should require reading the full document.
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-->
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<part>
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<title>The basic mac80211 driver interface</title>
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<partintro>
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<para>
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You should read and understand the information contained
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within this part of the book while implementing a driver.
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In some chapters, advanced usage is noted, that may be
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skipped at first.
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</para>
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<para>
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This part of the book only covers station and monitor mode
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functionality, additional information required to implement
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the other modes is covered in the second part of the book.
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</para>
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</partintro>
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<chapter id="basics">
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<title>Basic hardware handling</title>
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<para>TBD</para>
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<para>
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This chapter shall contain information on getting a hw
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struct allocated and registered with mac80211.
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</para>
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<para>
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Since it is required to allocate rates/modes before registering
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a hw struct, this chapter shall also contain information on setting
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up the rate/mode structs.
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</para>
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<para>
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Additionally, some discussion about the callbacks and
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the general programming model should be in here, including
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the definition of ieee80211_ops which will be referred to
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a lot.
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</para>
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<para>
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Finally, a discussion of hardware capabilities should be done
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with references to other parts of the book.
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</para>
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<!-- intentionally multiple !F lines to get proper order -->
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!Finclude/net/mac80211.h ieee80211_hw
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!Finclude/net/mac80211.h ieee80211_hw_flags
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!Finclude/net/mac80211.h SET_IEEE80211_DEV
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!Finclude/net/mac80211.h SET_IEEE80211_PERM_ADDR
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!Finclude/net/mac80211.h ieee80211_ops
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!Finclude/net/mac80211.h ieee80211_alloc_hw
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!Finclude/net/mac80211.h ieee80211_register_hw
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!Finclude/net/mac80211.h ieee80211_unregister_hw
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!Finclude/net/mac80211.h ieee80211_free_hw
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</chapter>
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<chapter id="phy-handling">
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<title>PHY configuration</title>
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<para>TBD</para>
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<para>
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This chapter should describe PHY handling including
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start/stop callbacks and the various structures used.
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</para>
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!Finclude/net/mac80211.h ieee80211_conf
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!Finclude/net/mac80211.h ieee80211_conf_flags
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</chapter>
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<chapter id="iface-handling">
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<title>Virtual interfaces</title>
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<para>TBD</para>
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<para>
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This chapter should describe virtual interface basics
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that are relevant to the driver (VLANs, MGMT etc are not.)
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It should explain the use of the add_iface/remove_iface
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callbacks as well as the interface configuration callbacks.
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</para>
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<para>Things related to AP mode should be discussed there.</para>
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<para>
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Things related to supporting multiple interfaces should be
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in the appropriate chapter, a BIG FAT note should be here about
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this though and the recommendation to allow only a single
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interface in STA mode at first!
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</para>
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!Finclude/net/mac80211.h ieee80211_vif
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</chapter>
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<chapter id="rx-tx">
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<title>Receive and transmit processing</title>
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<sect1>
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<title>what should be here</title>
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<para>TBD</para>
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<para>
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This should describe the receive and transmit
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paths in mac80211/the drivers as well as
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transmit status handling.
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</para>
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</sect1>
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<sect1>
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<title>Frame format</title>
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!Pinclude/net/mac80211.h Frame format
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</sect1>
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<sect1>
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<title>Packet alignment</title>
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!Pnet/mac80211/rx.c Packet alignment
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</sect1>
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<sect1>
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<title>Calling into mac80211 from interrupts</title>
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!Pinclude/net/mac80211.h Calling mac80211 from interrupts
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</sect1>
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<sect1>
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<title>functions/definitions</title>
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!Finclude/net/mac80211.h ieee80211_rx_status
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!Finclude/net/mac80211.h mac80211_rx_flags
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!Finclude/net/mac80211.h mac80211_tx_control_flags
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!Finclude/net/mac80211.h mac80211_rate_control_flags
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!Finclude/net/mac80211.h ieee80211_tx_rate
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!Finclude/net/mac80211.h ieee80211_tx_info
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!Finclude/net/mac80211.h ieee80211_tx_info_clear_status
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!Finclude/net/mac80211.h ieee80211_rx
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!Finclude/net/mac80211.h ieee80211_rx_ni
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!Finclude/net/mac80211.h ieee80211_rx_irqsafe
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!Finclude/net/mac80211.h ieee80211_tx_status
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!Finclude/net/mac80211.h ieee80211_tx_status_ni
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!Finclude/net/mac80211.h ieee80211_tx_status_irqsafe
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!Finclude/net/mac80211.h ieee80211_rts_get
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!Finclude/net/mac80211.h ieee80211_rts_duration
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!Finclude/net/mac80211.h ieee80211_ctstoself_get
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!Finclude/net/mac80211.h ieee80211_ctstoself_duration
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!Finclude/net/mac80211.h ieee80211_generic_frame_duration
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!Finclude/net/mac80211.h ieee80211_wake_queue
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!Finclude/net/mac80211.h ieee80211_stop_queue
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!Finclude/net/mac80211.h ieee80211_wake_queues
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!Finclude/net/mac80211.h ieee80211_stop_queues
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!Finclude/net/mac80211.h ieee80211_queue_stopped
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</sect1>
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</chapter>
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<chapter id="filters">
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<title>Frame filtering</title>
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!Pinclude/net/mac80211.h Frame filtering
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!Finclude/net/mac80211.h ieee80211_filter_flags
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</chapter>
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<chapter id="workqueue">
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<title>The mac80211 workqueue</title>
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!Pinclude/net/mac80211.h mac80211 workqueue
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!Finclude/net/mac80211.h ieee80211_queue_work
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!Finclude/net/mac80211.h ieee80211_queue_delayed_work
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</chapter>
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</part>
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|
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<part id="advanced">
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<title>Advanced driver interface</title>
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<partintro>
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<para>
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Information contained within this part of the book is
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of interest only for advanced interaction of mac80211
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with drivers to exploit more hardware capabilities and
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improve performance.
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</para>
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</partintro>
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<chapter id="led-support">
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<title>LED support</title>
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<para>
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Mac80211 supports various ways of blinking LEDs. Wherever possible,
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device LEDs should be exposed as LED class devices and hooked up to
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the appropriate trigger, which will then be triggered appropriately
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by mac80211.
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</para>
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!Finclude/net/mac80211.h ieee80211_get_tx_led_name
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!Finclude/net/mac80211.h ieee80211_get_rx_led_name
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!Finclude/net/mac80211.h ieee80211_get_assoc_led_name
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!Finclude/net/mac80211.h ieee80211_get_radio_led_name
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!Finclude/net/mac80211.h ieee80211_tpt_blink
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!Finclude/net/mac80211.h ieee80211_tpt_led_trigger_flags
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!Finclude/net/mac80211.h ieee80211_create_tpt_led_trigger
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</chapter>
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|
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<chapter id="hardware-crypto-offload">
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<title>Hardware crypto acceleration</title>
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!Pinclude/net/mac80211.h Hardware crypto acceleration
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|
<!-- intentionally multiple !F lines to get proper order -->
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!Finclude/net/mac80211.h set_key_cmd
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!Finclude/net/mac80211.h ieee80211_key_conf
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!Finclude/net/mac80211.h ieee80211_key_flags
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!Finclude/net/mac80211.h ieee80211_get_tkip_p1k
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!Finclude/net/mac80211.h ieee80211_get_tkip_p1k_iv
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!Finclude/net/mac80211.h ieee80211_get_tkip_p2k
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!Finclude/net/mac80211.h ieee80211_key_removed
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</chapter>
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|
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<chapter id="powersave">
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|
<title>Powersave support</title>
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!Pinclude/net/mac80211.h Powersave support
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|
</chapter>
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|
|
<chapter id="beacon-filter">
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|
<title>Beacon filter support</title>
|
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!Pinclude/net/mac80211.h Beacon filter support
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!Finclude/net/mac80211.h ieee80211_beacon_loss
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|
</chapter>
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|
|
|
<chapter id="qos">
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|
<title>Multiple queues and QoS support</title>
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|
<para>TBD</para>
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!Finclude/net/mac80211.h ieee80211_tx_queue_params
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</chapter>
|
|
|
|
<chapter id="AP">
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|
<title>Access point mode support</title>
|
|
<para>TBD</para>
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|
<para>Some parts of the if_conf should be discussed here instead</para>
|
|
<para>
|
|
Insert notes about VLAN interfaces with hw crypto here or
|
|
in the hw crypto chapter.
|
|
</para>
|
|
<section id="ps-client">
|
|
<title>support for powersaving clients</title>
|
|
!Pinclude/net/mac80211.h AP support for powersaving clients
|
|
</section>
|
|
!Finclude/net/mac80211.h ieee80211_get_buffered_bc
|
|
!Finclude/net/mac80211.h ieee80211_beacon_get
|
|
!Finclude/net/mac80211.h ieee80211_sta_eosp_irqsafe
|
|
!Finclude/net/mac80211.h ieee80211_frame_release_type
|
|
!Finclude/net/mac80211.h ieee80211_sta_ps_transition
|
|
!Finclude/net/mac80211.h ieee80211_sta_ps_transition_ni
|
|
!Finclude/net/mac80211.h ieee80211_sta_set_buffered
|
|
!Finclude/net/mac80211.h ieee80211_sta_block_awake
|
|
</chapter>
|
|
|
|
<chapter id="multi-iface">
|
|
<title>Supporting multiple virtual interfaces</title>
|
|
<para>TBD</para>
|
|
<para>
|
|
Note: WDS with identical MAC address should almost always be OK
|
|
</para>
|
|
<para>
|
|
Insert notes about having multiple virtual interfaces with
|
|
different MAC addresses here, note which configurations are
|
|
supported by mac80211, add notes about supporting hw crypto
|
|
with it.
|
|
</para>
|
|
!Finclude/net/mac80211.h ieee80211_iterate_active_interfaces
|
|
!Finclude/net/mac80211.h ieee80211_iterate_active_interfaces_atomic
|
|
</chapter>
|
|
|
|
<chapter id="station-handling">
|
|
<title>Station handling</title>
|
|
<para>TODO</para>
|
|
!Finclude/net/mac80211.h ieee80211_sta
|
|
!Finclude/net/mac80211.h sta_notify_cmd
|
|
!Finclude/net/mac80211.h ieee80211_find_sta
|
|
!Finclude/net/mac80211.h ieee80211_find_sta_by_ifaddr
|
|
</chapter>
|
|
|
|
<chapter id="hardware-scan-offload">
|
|
<title>Hardware scan offload</title>
|
|
<para>TBD</para>
|
|
!Finclude/net/mac80211.h ieee80211_scan_completed
|
|
</chapter>
|
|
|
|
<chapter id="aggregation">
|
|
<title>Aggregation</title>
|
|
<sect1>
|
|
<title>TX A-MPDU aggregation</title>
|
|
!Pnet/mac80211/agg-tx.c TX A-MPDU aggregation
|
|
!Cnet/mac80211/agg-tx.c
|
|
</sect1>
|
|
<sect1>
|
|
<title>RX A-MPDU aggregation</title>
|
|
!Pnet/mac80211/agg-rx.c RX A-MPDU aggregation
|
|
!Cnet/mac80211/agg-rx.c
|
|
</sect1>
|
|
!Finclude/net/mac80211.h ieee80211_ampdu_mlme_action
|
|
</chapter>
|
|
|
|
<chapter id="smps">
|
|
<title>Spatial Multiplexing Powersave (SMPS)</title>
|
|
!Pinclude/net/mac80211.h Spatial multiplexing power save
|
|
!Finclude/net/mac80211.h ieee80211_request_smps
|
|
!Finclude/net/mac80211.h ieee80211_smps_mode
|
|
</chapter>
|
|
</part>
|
|
|
|
<part id="rate-control">
|
|
<title>Rate control interface</title>
|
|
<partintro>
|
|
<para>TBD</para>
|
|
<para>
|
|
This part of the book describes the rate control algorithm
|
|
interface and how it relates to mac80211 and drivers.
|
|
</para>
|
|
</partintro>
|
|
<chapter id="ratecontrol-api">
|
|
<title>Rate Control API</title>
|
|
<para>TBD</para>
|
|
!Finclude/net/mac80211.h ieee80211_start_tx_ba_session
|
|
!Finclude/net/mac80211.h ieee80211_start_tx_ba_cb_irqsafe
|
|
!Finclude/net/mac80211.h ieee80211_stop_tx_ba_session
|
|
!Finclude/net/mac80211.h ieee80211_stop_tx_ba_cb_irqsafe
|
|
!Finclude/net/mac80211.h rate_control_changed
|
|
!Finclude/net/mac80211.h ieee80211_tx_rate_control
|
|
!Finclude/net/mac80211.h rate_control_send_low
|
|
</chapter>
|
|
</part>
|
|
|
|
<part id="internal">
|
|
<title>Internals</title>
|
|
<partintro>
|
|
<para>TBD</para>
|
|
<para>
|
|
This part of the book describes mac80211 internals.
|
|
</para>
|
|
</partintro>
|
|
|
|
<chapter id="key-handling">
|
|
<title>Key handling</title>
|
|
<sect1>
|
|
<title>Key handling basics</title>
|
|
!Pnet/mac80211/key.c Key handling basics
|
|
</sect1>
|
|
<sect1>
|
|
<title>MORE TBD</title>
|
|
<para>TBD</para>
|
|
</sect1>
|
|
</chapter>
|
|
|
|
<chapter id="rx-processing">
|
|
<title>Receive processing</title>
|
|
<para>TBD</para>
|
|
</chapter>
|
|
|
|
<chapter id="tx-processing">
|
|
<title>Transmit processing</title>
|
|
<para>TBD</para>
|
|
</chapter>
|
|
|
|
<chapter id="sta-info">
|
|
<title>Station info handling</title>
|
|
<sect1>
|
|
<title>Programming information</title>
|
|
!Fnet/mac80211/sta_info.h sta_info
|
|
!Fnet/mac80211/sta_info.h ieee80211_sta_info_flags
|
|
</sect1>
|
|
<sect1>
|
|
<title>STA information lifetime rules</title>
|
|
!Pnet/mac80211/sta_info.c STA information lifetime rules
|
|
</sect1>
|
|
</chapter>
|
|
|
|
<chapter id="aggregation-internals">
|
|
<title>Aggregation</title>
|
|
!Fnet/mac80211/sta_info.h sta_ampdu_mlme
|
|
!Fnet/mac80211/sta_info.h tid_ampdu_tx
|
|
!Fnet/mac80211/sta_info.h tid_ampdu_rx
|
|
</chapter>
|
|
|
|
<chapter id="synchronisation">
|
|
<title>Synchronisation</title>
|
|
<para>TBD</para>
|
|
<para>Locking, lots of RCU</para>
|
|
</chapter>
|
|
</part>
|
|
</book>
|
|
</set>
|