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<set>
  <setinfo>
    <title>The 802.11 subsystems &ndash; for kernel developers</title>
    <subtitle>
      Explaining wireless 802.11 networking in the Linux kernel
    </subtitle>

    <copyright>
      <year>2007-2009</year>
      <holder>Johannes Berg</holder>
    </copyright>

    <authorgroup>
      <author>
        <firstname>Johannes</firstname>
        <surname>Berg</surname>
        <affiliation>
          <address><email>johannes@sipsolutions.net</email></address>
        </affiliation>
      </author>
    </authorgroup>

    <legalnotice>
      <para>
        This documentation is free software; you can redistribute
        it and/or modify it under the terms of the GNU General Public
        License version 2 as published by the Free Software Foundation.
      </para>
      <para>
        This documentation is distributed in the hope that it will be
        useful, but WITHOUT ANY WARRANTY; without even the implied
        warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
        See the GNU General Public License for more details.
      </para>
      <para>
        You should have received a copy of the GNU General Public
        License along with this documentation; if not, write to the Free
        Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
        MA 02111-1307 USA
      </para>
      <para>
        For more details see the file COPYING in the source
        distribution of Linux.
      </para>
    </legalnotice>

    <abstract>
      <para>
        These books attempt to give a description of the
        various subsystems that play a role in 802.11 wireless
        networking in Linux. Since these books are for kernel
        developers they attempts to document the structures
        and functions used in the kernel as well as giving a
        higher-level overview.
      </para>
      <para>
	The reader is expected to be familiar with the 802.11
	standard as published by the IEEE in 802.11-2007 (or
	possibly later versions). References to this standard
	will be given as "802.11-2007 8.1.5".
      </para>
    </abstract>
  </setinfo>
  <book id="cfg80211-developers-guide">
    <bookinfo>
      <title>The cfg80211 subsystem</title>

      <abstract>
!Pinclude/net/cfg80211.h Introduction
      </abstract>
    </bookinfo>
      <chapter>
      <title>Device registration</title>
!Pinclude/net/cfg80211.h Device registration
!Finclude/net/cfg80211.h ieee80211_band
!Finclude/net/cfg80211.h ieee80211_channel_flags
!Finclude/net/cfg80211.h ieee80211_channel
!Finclude/net/cfg80211.h ieee80211_rate_flags
!Finclude/net/cfg80211.h ieee80211_rate
!Finclude/net/cfg80211.h ieee80211_sta_ht_cap
!Finclude/net/cfg80211.h ieee80211_supported_band
!Finclude/net/cfg80211.h cfg80211_signal_type
!Finclude/net/cfg80211.h wiphy_params_flags
!Finclude/net/cfg80211.h wiphy_flags
!Finclude/net/cfg80211.h wiphy
!Finclude/net/cfg80211.h wireless_dev
!Finclude/net/cfg80211.h wiphy_new
!Finclude/net/cfg80211.h wiphy_register
!Finclude/net/cfg80211.h wiphy_unregister
!Finclude/net/cfg80211.h wiphy_free

!Finclude/net/cfg80211.h wiphy_name
!Finclude/net/cfg80211.h wiphy_dev
!Finclude/net/cfg80211.h wiphy_priv
!Finclude/net/cfg80211.h priv_to_wiphy
!Finclude/net/cfg80211.h set_wiphy_dev
!Finclude/net/cfg80211.h wdev_priv
      </chapter>
      <chapter>
      <title>Actions and configuration</title>
!Pinclude/net/cfg80211.h Actions and configuration
!Finclude/net/cfg80211.h cfg80211_ops
!Finclude/net/cfg80211.h vif_params
!Finclude/net/cfg80211.h key_params
!Finclude/net/cfg80211.h survey_info_flags
!Finclude/net/cfg80211.h survey_info
!Finclude/net/cfg80211.h beacon_parameters
!Finclude/net/cfg80211.h plink_actions
!Finclude/net/cfg80211.h station_parameters
!Finclude/net/cfg80211.h station_info_flags
!Finclude/net/cfg80211.h rate_info_flags
!Finclude/net/cfg80211.h rate_info
!Finclude/net/cfg80211.h station_info
!Finclude/net/cfg80211.h monitor_flags
!Finclude/net/cfg80211.h mpath_info_flags
!Finclude/net/cfg80211.h mpath_info
!Finclude/net/cfg80211.h bss_parameters
!Finclude/net/cfg80211.h ieee80211_txq_params
!Finclude/net/cfg80211.h cfg80211_crypto_settings
!Finclude/net/cfg80211.h cfg80211_auth_request
!Finclude/net/cfg80211.h cfg80211_assoc_request
!Finclude/net/cfg80211.h cfg80211_deauth_request
!Finclude/net/cfg80211.h cfg80211_disassoc_request
!Finclude/net/cfg80211.h cfg80211_ibss_params
!Finclude/net/cfg80211.h cfg80211_connect_params
!Finclude/net/cfg80211.h cfg80211_pmksa
!Finclude/net/cfg80211.h cfg80211_send_rx_auth
!Finclude/net/cfg80211.h cfg80211_send_auth_timeout
!Finclude/net/cfg80211.h __cfg80211_auth_canceled
!Finclude/net/cfg80211.h cfg80211_send_rx_assoc
!Finclude/net/cfg80211.h cfg80211_send_assoc_timeout
!Finclude/net/cfg80211.h cfg80211_send_deauth
!Finclude/net/cfg80211.h __cfg80211_send_deauth
!Finclude/net/cfg80211.h cfg80211_send_disassoc
!Finclude/net/cfg80211.h __cfg80211_send_disassoc
!Finclude/net/cfg80211.h cfg80211_ibss_joined
!Finclude/net/cfg80211.h cfg80211_connect_result
!Finclude/net/cfg80211.h cfg80211_roamed
!Finclude/net/cfg80211.h cfg80211_disconnected
!Finclude/net/cfg80211.h cfg80211_ready_on_channel
!Finclude/net/cfg80211.h cfg80211_remain_on_channel_expired
!Finclude/net/cfg80211.h cfg80211_new_sta
!Finclude/net/cfg80211.h cfg80211_rx_mgmt
!Finclude/net/cfg80211.h cfg80211_mgmt_tx_status
!Finclude/net/cfg80211.h cfg80211_cqm_rssi_notify
!Finclude/net/cfg80211.h cfg80211_cqm_pktloss_notify
!Finclude/net/cfg80211.h cfg80211_michael_mic_failure
      </chapter>
      <chapter>
      <title>Scanning and BSS list handling</title>
!Pinclude/net/cfg80211.h Scanning and BSS list handling
!Finclude/net/cfg80211.h cfg80211_ssid
!Finclude/net/cfg80211.h cfg80211_scan_request
!Finclude/net/cfg80211.h cfg80211_scan_done
!Finclude/net/cfg80211.h cfg80211_bss
!Finclude/net/cfg80211.h cfg80211_inform_bss_frame
!Finclude/net/cfg80211.h cfg80211_inform_bss
!Finclude/net/cfg80211.h cfg80211_unlink_bss
!Finclude/net/cfg80211.h cfg80211_find_ie
!Finclude/net/cfg80211.h ieee80211_bss_get_ie
      </chapter>
      <chapter>
      <title>Utility functions</title>
!Pinclude/net/cfg80211.h Utility functions
!Finclude/net/cfg80211.h ieee80211_channel_to_frequency
!Finclude/net/cfg80211.h ieee80211_frequency_to_channel
!Finclude/net/cfg80211.h ieee80211_get_channel
!Finclude/net/cfg80211.h ieee80211_get_response_rate
!Finclude/net/cfg80211.h ieee80211_hdrlen
!Finclude/net/cfg80211.h ieee80211_get_hdrlen_from_skb
!Finclude/net/cfg80211.h ieee80211_radiotap_iterator
      </chapter>
      <chapter>
      <title>Data path helpers</title>
!Pinclude/net/cfg80211.h Data path helpers
!Finclude/net/cfg80211.h ieee80211_data_to_8023
!Finclude/net/cfg80211.h ieee80211_data_from_8023
!Finclude/net/cfg80211.h ieee80211_amsdu_to_8023s
!Finclude/net/cfg80211.h cfg80211_classify8021d
      </chapter>
      <chapter>
      <title>Regulatory enforcement infrastructure</title>
!Pinclude/net/cfg80211.h Regulatory enforcement infrastructure
!Finclude/net/cfg80211.h regulatory_hint
!Finclude/net/cfg80211.h wiphy_apply_custom_regulatory
!Finclude/net/cfg80211.h freq_reg_info
      </chapter>
      <chapter>
      <title>RFkill integration</title>
!Pinclude/net/cfg80211.h RFkill integration
!Finclude/net/cfg80211.h wiphy_rfkill_set_hw_state
!Finclude/net/cfg80211.h wiphy_rfkill_start_polling
!Finclude/net/cfg80211.h wiphy_rfkill_stop_polling
      </chapter>
      <chapter>
      <title>Test mode</title>
!Pinclude/net/cfg80211.h Test mode
!Finclude/net/cfg80211.h cfg80211_testmode_alloc_reply_skb
!Finclude/net/cfg80211.h cfg80211_testmode_reply
!Finclude/net/cfg80211.h cfg80211_testmode_alloc_event_skb
!Finclude/net/cfg80211.h cfg80211_testmode_event
      </chapter>
  </book>
  <book id="mac80211-developers-guide">
    <bookinfo>
      <title>The mac80211 subsystem</title>
      <abstract>
!Pinclude/net/mac80211.h Introduction
!Pinclude/net/mac80211.h Warning
      </abstract>
    </bookinfo>

    <toc></toc>

  <!--
  Generally, this document shall be ordered by increasing complexity.
  It is important to note that readers should be able to read only
  the first few sections to get a working driver and only advanced
  usage should require reading the full document.
  -->

    <part>
      <title>The basic mac80211 driver interface</title>
      <partintro>
        <para>
          You should read and understand the information contained
          within this part of the book while implementing a driver.
          In some chapters, advanced usage is noted, that may be
          skipped at first.
        </para>
        <para>
          This part of the book only covers station and monitor mode
          functionality, additional information required to implement
          the other modes is covered in the second part of the book.
        </para>
      </partintro>

      <chapter id="basics">
        <title>Basic hardware handling</title>
        <para>TBD</para>
        <para>
          This chapter shall contain information on getting a hw
          struct allocated and registered with mac80211.
        </para>
        <para>
          Since it is required to allocate rates/modes before registering
          a hw struct, this chapter shall also contain information on setting
          up the rate/mode structs.
        </para>
        <para>
          Additionally, some discussion about the callbacks and
          the general programming model should be in here, including
          the definition of ieee80211_ops which will be referred to
          a lot.
        </para>
        <para>
          Finally, a discussion of hardware capabilities should be done
          with references to other parts of the book.
        </para>
  <!-- intentionally multiple !F lines to get proper order -->
!Finclude/net/mac80211.h ieee80211_hw
!Finclude/net/mac80211.h ieee80211_hw_flags
!Finclude/net/mac80211.h SET_IEEE80211_DEV
!Finclude/net/mac80211.h SET_IEEE80211_PERM_ADDR
!Finclude/net/mac80211.h ieee80211_ops
!Finclude/net/mac80211.h ieee80211_alloc_hw
!Finclude/net/mac80211.h ieee80211_register_hw
!Finclude/net/mac80211.h ieee80211_get_tx_led_name
!Finclude/net/mac80211.h ieee80211_get_rx_led_name
!Finclude/net/mac80211.h ieee80211_get_assoc_led_name
!Finclude/net/mac80211.h ieee80211_get_radio_led_name
!Finclude/net/mac80211.h ieee80211_unregister_hw
!Finclude/net/mac80211.h ieee80211_free_hw
      </chapter>

      <chapter id="phy-handling">
        <title>PHY configuration</title>
        <para>TBD</para>
        <para>
          This chapter should describe PHY handling including
          start/stop callbacks and the various structures used.
        </para>
!Finclude/net/mac80211.h ieee80211_conf
!Finclude/net/mac80211.h ieee80211_conf_flags
      </chapter>

      <chapter id="iface-handling">
        <title>Virtual interfaces</title>
        <para>TBD</para>
        <para>
          This chapter should describe virtual interface basics
          that are relevant to the driver (VLANs, MGMT etc are not.)
          It should explain the use of the add_iface/remove_iface
          callbacks as well as the interface configuration callbacks.
        </para>
        <para>Things related to AP mode should be discussed there.</para>
        <para>
          Things related to supporting multiple interfaces should be
          in the appropriate chapter, a BIG FAT note should be here about
          this though and the recommendation to allow only a single
          interface in STA mode at first!
        </para>
!Finclude/net/mac80211.h ieee80211_vif
      </chapter>

      <chapter id="rx-tx">
        <title>Receive and transmit processing</title>
        <sect1>
          <title>what should be here</title>
          <para>TBD</para>
          <para>
            This should describe the receive and transmit
            paths in mac80211/the drivers as well as
            transmit status handling.
          </para>
        </sect1>
        <sect1>
          <title>Frame format</title>
!Pinclude/net/mac80211.h Frame format
        </sect1>
        <sect1>
          <title>Packet alignment</title>
!Pnet/mac80211/rx.c Packet alignment
        </sect1>
        <sect1>
          <title>Calling into mac80211 from interrupts</title>
!Pinclude/net/mac80211.h Calling mac80211 from interrupts
        </sect1>
        <sect1>
          <title>functions/definitions</title>
!Finclude/net/mac80211.h ieee80211_rx_status
!Finclude/net/mac80211.h mac80211_rx_flags
!Finclude/net/mac80211.h mac80211_tx_control_flags
!Finclude/net/mac80211.h mac80211_rate_control_flags
!Finclude/net/mac80211.h ieee80211_tx_rate
!Finclude/net/mac80211.h ieee80211_tx_info
!Finclude/net/mac80211.h ieee80211_tx_info_clear_status
!Finclude/net/mac80211.h ieee80211_rx
!Finclude/net/mac80211.h ieee80211_rx_ni
!Finclude/net/mac80211.h ieee80211_rx_irqsafe
!Finclude/net/mac80211.h ieee80211_tx_status
!Finclude/net/mac80211.h ieee80211_tx_status_ni
!Finclude/net/mac80211.h ieee80211_tx_status_irqsafe
!Finclude/net/mac80211.h ieee80211_rts_get
!Finclude/net/mac80211.h ieee80211_rts_duration
!Finclude/net/mac80211.h ieee80211_ctstoself_get
!Finclude/net/mac80211.h ieee80211_ctstoself_duration
!Finclude/net/mac80211.h ieee80211_generic_frame_duration
!Finclude/net/mac80211.h ieee80211_wake_queue
!Finclude/net/mac80211.h ieee80211_stop_queue
!Finclude/net/mac80211.h ieee80211_wake_queues
!Finclude/net/mac80211.h ieee80211_stop_queues
!Finclude/net/mac80211.h ieee80211_queue_stopped
        </sect1>
      </chapter>

      <chapter id="filters">
        <title>Frame filtering</title>
!Pinclude/net/mac80211.h Frame filtering
!Finclude/net/mac80211.h ieee80211_filter_flags
      </chapter>

      <chapter id="workqueue">
        <title>The mac80211 workqueue</title>
!Pinclude/net/mac80211.h mac80211 workqueue
!Finclude/net/mac80211.h ieee80211_queue_work
!Finclude/net/mac80211.h ieee80211_queue_delayed_work
      </chapter>
    </part>

    <part id="advanced">
      <title>Advanced driver interface</title>
      <partintro>
        <para>
         Information contained within this part of the book is
         of interest only for advanced interaction of mac80211
         with drivers to exploit more hardware capabilities and
         improve performance.
        </para>
      </partintro>

      <chapter id="hardware-crypto-offload">
        <title>Hardware crypto acceleration</title>
!Pinclude/net/mac80211.h Hardware crypto acceleration
  <!-- intentionally multiple !F lines to get proper order -->
!Finclude/net/mac80211.h set_key_cmd
!Finclude/net/mac80211.h ieee80211_key_conf
!Finclude/net/mac80211.h ieee80211_key_flags
!Finclude/net/mac80211.h ieee80211_tkip_key_type
!Finclude/net/mac80211.h ieee80211_get_tkip_key
!Finclude/net/mac80211.h ieee80211_key_removed
      </chapter>

      <chapter id="powersave">
        <title>Powersave support</title>
!Pinclude/net/mac80211.h Powersave support
      </chapter>

      <chapter id="beacon-filter">
        <title>Beacon filter support</title>
!Pinclude/net/mac80211.h Beacon filter support
!Finclude/net/mac80211.h ieee80211_beacon_loss
      </chapter>

      <chapter id="qos">
        <title>Multiple queues and QoS support</title>
        <para>TBD</para>
!Finclude/net/mac80211.h ieee80211_tx_queue_params
      </chapter>

      <chapter id="AP">
        <title>Access point mode support</title>
        <para>TBD</para>
        <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>
!Finclude/net/mac80211.h ieee80211_get_buffered_bc
!Finclude/net/mac80211.h ieee80211_beacon_get
      </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
!Finclude/net/mac80211.h ieee80211_sta_block_awake
      </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>
