Documentation/DocBook/80211.tmpl

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   4 <set>
   5   <setinfo>
   6     <title>The 802.11 subsystems &ndash; for kernel developers</title>
   7     <subtitle>
   8       Explaining wireless 802.11 networking in the Linux kernel
   9     </subtitle>
  10
  11     <copyright>
  12       <year>2007-2009</year>
  13       <holder>Johannes Berg</holder>
  14     </copyright>
  15
  16     <authorgroup>
  17       <author>
  18         <firstname>Johannes</firstname>
  19         <surname>Berg</surname>
  20         <affiliation>
  21           <address><email>johannes@sipsolutions.net</email></address>
  22         </affiliation>
  23       </author>
  24     </authorgroup>
  25
  26     <legalnotice>
  27       <para>
  28         This documentation is free software; you can redistribute
  29         it and/or modify it under the terms of the GNU General Public
  30         License version 2 as published by the Free Software Foundation.
  31       </para>
  32       <para>
  33         This documentation is distributed in the hope that it will be
  34         useful, but WITHOUT ANY WARRANTY; without even the implied
  35         warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  36         See the GNU General Public License for more details.
  37       </para>
  38       <para>
  39         You should have received a copy of the GNU General Public
  40         License along with this documentation; if not, write to the Free
  41         Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  42         MA 02111-1307 USA
  43       </para>
  44       <para>
  45         For more details see the file COPYING in the source
  46         distribution of Linux.
  47       </para>
  48     </legalnotice>
  49
  50     <abstract>
  51       <para>
  52         These books attempt to give a description of the
  53         various subsystems that play a role in 802.11 wireless
  54         networking in Linux. Since these books are for kernel
  55         developers they attempts to document the structures
  56         and functions used in the kernel as well as giving a
  57         higher-level overview.
  58       </para>
  59       <para>
  60         The reader is expected to be familiar with the 802.11
  61         standard as published by the IEEE in 802.11-2007 (or
  62         possibly later versions). References to this standard
  63         will be given as "802.11-2007 8.1.5".
  64       </para>
  65     </abstract>
  66   </setinfo>
  67   <book id="cfg80211-developers-guide">
  68     <bookinfo>
  69       <title>The cfg80211 subsystem</title>
  70
  71       <abstract>
  72 !Pinclude/net/cfg80211.h Introduction
  73       </abstract>
  74     </bookinfo>
  75       <chapter>
  76       <title>Device registration</title>
  77 !Pinclude/net/cfg80211.h Device registration
  78 !Finclude/net/cfg80211.h ieee80211_band
  79 !Finclude/net/cfg80211.h ieee80211_channel_flags
  80 !Finclude/net/cfg80211.h ieee80211_channel
  81 !Finclude/net/cfg80211.h ieee80211_rate_flags
  82 !Finclude/net/cfg80211.h ieee80211_rate
  83 !Finclude/net/cfg80211.h ieee80211_sta_ht_cap
  84 !Finclude/net/cfg80211.h ieee80211_supported_band
  85 !Finclude/net/cfg80211.h cfg80211_signal_type
  86 !Finclude/net/cfg80211.h wiphy_params_flags
  87 !Finclude/net/cfg80211.h wiphy_flags
  88 !Finclude/net/cfg80211.h wiphy
  89 !Finclude/net/cfg80211.h wireless_dev
  90 !Finclude/net/cfg80211.h wiphy_new
  91 !Finclude/net/cfg80211.h wiphy_register
  92 !Finclude/net/cfg80211.h wiphy_unregister
  93 !Finclude/net/cfg80211.h wiphy_free
  94
  95 !Finclude/net/cfg80211.h wiphy_name
  96 !Finclude/net/cfg80211.h wiphy_dev
  97 !Finclude/net/cfg80211.h wiphy_priv
  98 !Finclude/net/cfg80211.h priv_to_wiphy
  99 !Finclude/net/cfg80211.h set_wiphy_dev
 100 !Finclude/net/cfg80211.h wdev_priv
 101       </chapter>
 102       <chapter>
 103       <title>Actions and configuration</title>
 104 !Pinclude/net/cfg80211.h Actions and configuration
 105 !Finclude/net/cfg80211.h cfg80211_ops
 106 !Finclude/net/cfg80211.h vif_params
 107 !Finclude/net/cfg80211.h key_params
 108 !Finclude/net/cfg80211.h survey_info_flags
 109 !Finclude/net/cfg80211.h survey_info
 110 !Finclude/net/cfg80211.h beacon_parameters
 111 !Finclude/net/cfg80211.h plink_actions
 112 !Finclude/net/cfg80211.h station_parameters
 113 !Finclude/net/cfg80211.h station_info_flags
 114 !Finclude/net/cfg80211.h rate_info_flags
 115 !Finclude/net/cfg80211.h rate_info
 116 !Finclude/net/cfg80211.h station_info
 117 !Finclude/net/cfg80211.h monitor_flags
 118 !Finclude/net/cfg80211.h mpath_info_flags
 119 !Finclude/net/cfg80211.h mpath_info
 120 !Finclude/net/cfg80211.h bss_parameters
 121 !Finclude/net/cfg80211.h ieee80211_txq_params
 122 !Finclude/net/cfg80211.h cfg80211_crypto_settings
 123 !Finclude/net/cfg80211.h cfg80211_auth_request
 124 !Finclude/net/cfg80211.h cfg80211_assoc_request
 125 !Finclude/net/cfg80211.h cfg80211_deauth_request
 126 !Finclude/net/cfg80211.h cfg80211_disassoc_request
 127 !Finclude/net/cfg80211.h cfg80211_ibss_params
 128 !Finclude/net/cfg80211.h cfg80211_connect_params
 129 !Finclude/net/cfg80211.h cfg80211_pmksa
 130 !Finclude/net/cfg80211.h cfg80211_send_rx_auth
 131 !Finclude/net/cfg80211.h cfg80211_send_auth_timeout
 132 !Finclude/net/cfg80211.h __cfg80211_auth_canceled
 133 !Finclude/net/cfg80211.h cfg80211_send_rx_assoc
 134 !Finclude/net/cfg80211.h cfg80211_send_assoc_timeout
 135 !Finclude/net/cfg80211.h cfg80211_send_deauth
 136 !Finclude/net/cfg80211.h __cfg80211_send_deauth
 137 !Finclude/net/cfg80211.h cfg80211_send_disassoc
 138 !Finclude/net/cfg80211.h __cfg80211_send_disassoc
 139 !Finclude/net/cfg80211.h cfg80211_ibss_joined
 140 !Finclude/net/cfg80211.h cfg80211_connect_result
 141 !Finclude/net/cfg80211.h cfg80211_roamed
 142 !Finclude/net/cfg80211.h cfg80211_disconnected
 143 !Finclude/net/cfg80211.h cfg80211_ready_on_channel
 144 !Finclude/net/cfg80211.h cfg80211_remain_on_channel_expired
 145 !Finclude/net/cfg80211.h cfg80211_new_sta
 146 !Finclude/net/cfg80211.h cfg80211_rx_mgmt
 147 !Finclude/net/cfg80211.h cfg80211_mgmt_tx_status
 148 !Finclude/net/cfg80211.h cfg80211_cqm_rssi_notify
 149 !Finclude/net/cfg80211.h cfg80211_cqm_pktloss_notify
 150 !Finclude/net/cfg80211.h cfg80211_michael_mic_failure
 151       </chapter>
 152       <chapter>
 153       <title>Scanning and BSS list handling</title>
 154 !Pinclude/net/cfg80211.h Scanning and BSS list handling
 155 !Finclude/net/cfg80211.h cfg80211_ssid
 156 !Finclude/net/cfg80211.h cfg80211_scan_request
 157 !Finclude/net/cfg80211.h cfg80211_scan_done
 158 !Finclude/net/cfg80211.h cfg80211_bss
 159 !Finclude/net/cfg80211.h cfg80211_inform_bss_frame
 160 !Finclude/net/cfg80211.h cfg80211_inform_bss
 161 !Finclude/net/cfg80211.h cfg80211_unlink_bss
 162 !Finclude/net/cfg80211.h cfg80211_find_ie
 163 !Finclude/net/cfg80211.h ieee80211_bss_get_ie
 164       </chapter>
 165       <chapter>
 166       <title>Utility functions</title>
 167 !Pinclude/net/cfg80211.h Utility functions
 168 !Finclude/net/cfg80211.h ieee80211_channel_to_frequency
 169 !Finclude/net/cfg80211.h ieee80211_frequency_to_channel
 170 !Finclude/net/cfg80211.h ieee80211_get_channel
 171 !Finclude/net/cfg80211.h ieee80211_get_response_rate
 172 !Finclude/net/cfg80211.h ieee80211_hdrlen
 173 !Finclude/net/cfg80211.h ieee80211_get_hdrlen_from_skb
 174 !Finclude/net/cfg80211.h ieee80211_radiotap_iterator
 175       </chapter>
 176       <chapter>
 177       <title>Data path helpers</title>
 178 !Pinclude/net/cfg80211.h Data path helpers
 179 !Finclude/net/cfg80211.h ieee80211_data_to_8023
 180 !Finclude/net/cfg80211.h ieee80211_data_from_8023
 181 !Finclude/net/cfg80211.h ieee80211_amsdu_to_8023s
 182 !Finclude/net/cfg80211.h cfg80211_classify8021d
 183       </chapter>
 184       <chapter>
 185       <title>Regulatory enforcement infrastructure</title>
 186 !Pinclude/net/cfg80211.h Regulatory enforcement infrastructure
 187 !Finclude/net/cfg80211.h regulatory_hint
 188 !Finclude/net/cfg80211.h wiphy_apply_custom_regulatory
 189 !Finclude/net/cfg80211.h freq_reg_info
 190       </chapter>
 191       <chapter>
 192       <title>RFkill integration</title>
 193 !Pinclude/net/cfg80211.h RFkill integration
 194 !Finclude/net/cfg80211.h wiphy_rfkill_set_hw_state
 195 !Finclude/net/cfg80211.h wiphy_rfkill_start_polling
 196 !Finclude/net/cfg80211.h wiphy_rfkill_stop_polling
 197       </chapter>
 198       <chapter>
 199       <title>Test mode</title>
 200 !Pinclude/net/cfg80211.h Test mode
 201 !Finclude/net/cfg80211.h cfg80211_testmode_alloc_reply_skb
 202 !Finclude/net/cfg80211.h cfg80211_testmode_reply
 203 !Finclude/net/cfg80211.h cfg80211_testmode_alloc_event_skb
 204 !Finclude/net/cfg80211.h cfg80211_testmode_event
 205       </chapter>
 206   </book>
 207   <book id="mac80211-developers-guide">
 208     <bookinfo>
 209       <title>The mac80211 subsystem</title>
 210       <abstract>
 211 !Pinclude/net/mac80211.h Introduction
 212 !Pinclude/net/mac80211.h Warning
 213       </abstract>
 214     </bookinfo>
 215
 216     <toc></toc>
 217
 218   <!--
 219   Generally, this document shall be ordered by increasing complexity.
 220   It is important to note that readers should be able to read only
 221   the first few sections to get a working driver and only advanced
 222   usage should require reading the full document.
 223   -->
 224
 225     <part>
 226       <title>The basic mac80211 driver interface</title>
 227       <partintro>
 228         <para>
 229           You should read and understand the information contained
 230           within this part of the book while implementing a driver.
 231           In some chapters, advanced usage is noted, that may be
 232           skipped at first.
 233         </para>
 234         <para>
 235           This part of the book only covers station and monitor mode
 236           functionality, additional information required to implement
 237           the other modes is covered in the second part of the book.
 238         </para>
 239       </partintro>
 240
 241       <chapter id="basics">
 242         <title>Basic hardware handling</title>
 243         <para>TBD</para>
 244         <para>
 245           This chapter shall contain information on getting a hw
 246           struct allocated and registered with mac80211.
 247         </para>
 248         <para>
 249           Since it is required to allocate rates/modes before registering
 250           a hw struct, this chapter shall also contain information on setting
 251           up the rate/mode structs.
 252         </para>
 253         <para>
 254           Additionally, some discussion about the callbacks and
 255           the general programming model should be in here, including
 256           the definition of ieee80211_ops which will be referred to
 257           a lot.
 258         </para>
 259         <para>
 260           Finally, a discussion of hardware capabilities should be done
 261           with references to other parts of the book.
 262         </para>
 263   <!-- intentionally multiple !F lines to get proper order -->
 264 !Finclude/net/mac80211.h ieee80211_hw
 265 !Finclude/net/mac80211.h ieee80211_hw_flags
 266 !Finclude/net/mac80211.h SET_IEEE80211_DEV
 267 !Finclude/net/mac80211.h SET_IEEE80211_PERM_ADDR
 268 !Finclude/net/mac80211.h ieee80211_ops
 269 !Finclude/net/mac80211.h ieee80211_alloc_hw
 270 !Finclude/net/mac80211.h ieee80211_register_hw
 271 !Finclude/net/mac80211.h ieee80211_get_tx_led_name
 272 !Finclude/net/mac80211.h ieee80211_get_rx_led_name
 273 !Finclude/net/mac80211.h ieee80211_get_assoc_led_name
 274 !Finclude/net/mac80211.h ieee80211_get_radio_led_name
 275 !Finclude/net/mac80211.h ieee80211_unregister_hw
 276 !Finclude/net/mac80211.h ieee80211_free_hw
 277       </chapter>
 278
 279       <chapter id="phy-handling">
 280         <title>PHY configuration</title>
 281         <para>TBD</para>
 282         <para>
 283           This chapter should describe PHY handling including
 284           start/stop callbacks and the various structures used.
 285         </para>
 286 !Finclude/net/mac80211.h ieee80211_conf
 287 !Finclude/net/mac80211.h ieee80211_conf_flags
 288       </chapter>
 289
 290       <chapter id="iface-handling">
 291         <title>Virtual interfaces</title>
 292         <para>TBD</para>
 293         <para>
 294           This chapter should describe virtual interface basics
 295           that are relevant to the driver (VLANs, MGMT etc are not.)
 296           It should explain the use of the add_iface/remove_iface
 297           callbacks as well as the interface configuration callbacks.
 298         </para>
 299         <para>Things related to AP mode should be discussed there.</para>
 300         <para>
 301           Things related to supporting multiple interfaces should be
 302           in the appropriate chapter, a BIG FAT note should be here about
 303           this though and the recommendation to allow only a single
 304           interface in STA mode at first!
 305         </para>
 306 !Finclude/net/mac80211.h ieee80211_vif
 307       </chapter>
 308
 309       <chapter id="rx-tx">
 310         <title>Receive and transmit processing</title>
 311         <sect1>
 312           <title>what should be here</title>
 313           <para>TBD</para>
 314           <para>
 315             This should describe the receive and transmit
 316             paths in mac80211/the drivers as well as
 317             transmit status handling.
 318           </para>
 319         </sect1>
 320         <sect1>
 321           <title>Frame format</title>
 322 !Pinclude/net/mac80211.h Frame format
 323         </sect1>
 324         <sect1>
 325           <title>Packet alignment</title>
 326 !Pnet/mac80211/rx.c Packet alignment
 327         </sect1>
 328         <sect1>
 329           <title>Calling into mac80211 from interrupts</title>
 330 !Pinclude/net/mac80211.h Calling mac80211 from interrupts
 331         </sect1>
 332         <sect1>
 333           <title>functions/definitions</title>
 334 !Finclude/net/mac80211.h ieee80211_rx_status
 335 !Finclude/net/mac80211.h mac80211_rx_flags
 336 !Finclude/net/mac80211.h mac80211_tx_control_flags
 337 !Finclude/net/mac80211.h mac80211_rate_control_flags
 338 !Finclude/net/mac80211.h ieee80211_tx_rate
 339 !Finclude/net/mac80211.h ieee80211_tx_info
 340 !Finclude/net/mac80211.h ieee80211_tx_info_clear_status
 341 !Finclude/net/mac80211.h ieee80211_rx
 342 !Finclude/net/mac80211.h ieee80211_rx_ni
 343 !Finclude/net/mac80211.h ieee80211_rx_irqsafe
 344 !Finclude/net/mac80211.h ieee80211_tx_status
 345 !Finclude/net/mac80211.h ieee80211_tx_status_ni
 346 !Finclude/net/mac80211.h ieee80211_tx_status_irqsafe
 347 !Finclude/net/mac80211.h ieee80211_rts_get
 348 !Finclude/net/mac80211.h ieee80211_rts_duration
 349 !Finclude/net/mac80211.h ieee80211_ctstoself_get
 350 !Finclude/net/mac80211.h ieee80211_ctstoself_duration
 351 !Finclude/net/mac80211.h ieee80211_generic_frame_duration
 352 !Finclude/net/mac80211.h ieee80211_wake_queue
 353 !Finclude/net/mac80211.h ieee80211_stop_queue
 354 !Finclude/net/mac80211.h ieee80211_wake_queues
 355 !Finclude/net/mac80211.h ieee80211_stop_queues
 356 !Finclude/net/mac80211.h ieee80211_queue_stopped
 357         </sect1>
 358       </chapter>
 359
 360       <chapter id="filters">
 361         <title>Frame filtering</title>
 362 !Pinclude/net/mac80211.h Frame filtering
 363 !Finclude/net/mac80211.h ieee80211_filter_flags
 364       </chapter>
 365
 366       <chapter id="workqueue">
 367         <title>The mac80211 workqueue</title>
 368 !Pinclude/net/mac80211.h mac80211 workqueue
 369 !Finclude/net/mac80211.h ieee80211_queue_work
 370 !Finclude/net/mac80211.h ieee80211_queue_delayed_work
 371       </chapter>
 372     </part>
 373
 374     <part id="advanced">
 375       <title>Advanced driver interface</title>
 376       <partintro>
 377         <para>
 378          Information contained within this part of the book is
 379          of interest only for advanced interaction of mac80211
 380          with drivers to exploit more hardware capabilities and
 381          improve performance.
 382         </para>
 383       </partintro>
 384
 385       <chapter id="hardware-crypto-offload">
 386         <title>Hardware crypto acceleration</title>
 387 !Pinclude/net/mac80211.h Hardware crypto acceleration
 388   <!-- intentionally multiple !F lines to get proper order -->
 389 !Finclude/net/mac80211.h set_key_cmd
 390 !Finclude/net/mac80211.h ieee80211_key_conf
 391 !Finclude/net/mac80211.h ieee80211_key_flags
 392 !Finclude/net/mac80211.h ieee80211_tkip_key_type
 393 !Finclude/net/mac80211.h ieee80211_get_tkip_key
 394 !Finclude/net/mac80211.h ieee80211_key_removed
 395       </chapter>
 396
 397       <chapter id="powersave">
 398         <title>Powersave support</title>
 399 !Pinclude/net/mac80211.h Powersave support
 400       </chapter>
 401
 402       <chapter id="beacon-filter">
 403         <title>Beacon filter support</title>
 404 !Pinclude/net/mac80211.h Beacon filter support
 405 !Finclude/net/mac80211.h ieee80211_beacon_loss
 406       </chapter>
 407
 408       <chapter id="qos">
 409         <title>Multiple queues and QoS support</title>
 410         <para>TBD</para>
 411 !Finclude/net/mac80211.h ieee80211_tx_queue_params
 412       </chapter>
 413
 414       <chapter id="AP">
 415         <title>Access point mode support</title>
 416         <para>TBD</para>
 417         <para>Some parts of the if_conf should be discussed here instead</para>
 418         <para>
 419           Insert notes about VLAN interfaces with hw crypto here or
 420           in the hw crypto chapter.
 421         </para>
 422 !Finclude/net/mac80211.h ieee80211_get_buffered_bc
 423 !Finclude/net/mac80211.h ieee80211_beacon_get
 424       </chapter>
 425
 426       <chapter id="multi-iface">
 427         <title>Supporting multiple virtual interfaces</title>
 428         <para>TBD</para>
 429         <para>
 430           Note: WDS with identical MAC address should almost always be OK
 431         </para>
 432         <para>
 433           Insert notes about having multiple virtual interfaces with
 434           different MAC addresses here, note which configurations are
 435           supported by mac80211, add notes about supporting hw crypto
 436           with it.
 437         </para>
 438 !Finclude/net/mac80211.h ieee80211_iterate_active_interfaces
 439 !Finclude/net/mac80211.h ieee80211_iterate_active_interfaces_atomic
 440       </chapter>
 441
 442       <chapter id="station-handling">
 443         <title>Station handling</title>
 444         <para>TODO</para>
 445 !Finclude/net/mac80211.h ieee80211_sta
 446 !Finclude/net/mac80211.h sta_notify_cmd
 447 !Finclude/net/mac80211.h ieee80211_find_sta
 448 !Finclude/net/mac80211.h ieee80211_find_sta_by_ifaddr
 449 !Finclude/net/mac80211.h ieee80211_sta_block_awake
 450       </chapter>
 451
 452       <chapter id="hardware-scan-offload">
 453         <title>Hardware scan offload</title>
 454         <para>TBD</para>
 455 !Finclude/net/mac80211.h ieee80211_scan_completed
 456       </chapter>
 457
 458       <chapter id="aggregation">
 459         <title>Aggregation</title>
 460         <sect1>
 461           <title>TX A-MPDU aggregation</title>
 462 !Pnet/mac80211/agg-tx.c TX A-MPDU aggregation
 463 !Cnet/mac80211/agg-tx.c
 464         </sect1>
 465         <sect1>
 466           <title>RX A-MPDU aggregation</title>
 467 !Pnet/mac80211/agg-rx.c RX A-MPDU aggregation
 468 !Cnet/mac80211/agg-rx.c
 469         </sect1>
 470 !Finclude/net/mac80211.h ieee80211_ampdu_mlme_action
 471       </chapter>
 472
 473       <chapter id="smps">
 474         <title>Spatial Multiplexing Powersave (SMPS)</title>
 475 !Pinclude/net/mac80211.h Spatial multiplexing power save
 476 !Finclude/net/mac80211.h ieee80211_request_smps
 477 !Finclude/net/mac80211.h ieee80211_smps_mode
 478       </chapter>
 479     </part>
 480
 481     <part id="rate-control">
 482       <title>Rate control interface</title>
 483       <partintro>
 484         <para>TBD</para>
 485         <para>
 486          This part of the book describes the rate control algorithm
 487          interface and how it relates to mac80211 and drivers.
 488         </para>
 489       </partintro>
 490       <chapter id="ratecontrol-api">
 491         <title>Rate Control API</title>
 492         <para>TBD</para>
 493 !Finclude/net/mac80211.h ieee80211_start_tx_ba_session
 494 !Finclude/net/mac80211.h ieee80211_start_tx_ba_cb_irqsafe
 495 !Finclude/net/mac80211.h ieee80211_stop_tx_ba_session
 496 !Finclude/net/mac80211.h ieee80211_stop_tx_ba_cb_irqsafe
 497 !Finclude/net/mac80211.h rate_control_changed
 498 !Finclude/net/mac80211.h ieee80211_tx_rate_control
 499 !Finclude/net/mac80211.h rate_control_send_low
 500       </chapter>
 501     </part>
 502
 503     <part id="internal">
 504       <title>Internals</title>
 505       <partintro>
 506         <para>TBD</para>
 507         <para>
 508          This part of the book describes mac80211 internals.
 509         </para>
 510       </partintro>
 511
 512       <chapter id="key-handling">
 513         <title>Key handling</title>
 514         <sect1>
 515           <title>Key handling basics</title>
 516 !Pnet/mac80211/key.c Key handling basics
 517         </sect1>
 518         <sect1>
 519           <title>MORE TBD</title>
 520           <para>TBD</para>
 521         </sect1>
 522       </chapter>
 523
 524       <chapter id="rx-processing">
 525         <title>Receive processing</title>
 526         <para>TBD</para>
 527       </chapter>
 528
 529       <chapter id="tx-processing">
 530         <title>Transmit processing</title>
 531         <para>TBD</para>
 532       </chapter>
 533
 534       <chapter id="sta-info">
 535         <title>Station info handling</title>
 536         <sect1>
 537           <title>Programming information</title>
 538 !Fnet/mac80211/sta_info.h sta_info
 539 !Fnet/mac80211/sta_info.h ieee80211_sta_info_flags
 540         </sect1>
 541         <sect1>
 542           <title>STA information lifetime rules</title>
 543 !Pnet/mac80211/sta_info.c STA information lifetime rules
 544         </sect1>
 545       </chapter>
 546
 547       <chapter id="aggregation-internals">
 548         <title>Aggregation</title>
 549 !Fnet/mac80211/sta_info.h sta_ampdu_mlme
 550 !Fnet/mac80211/sta_info.h tid_ampdu_tx
 551 !Fnet/mac80211/sta_info.h tid_ampdu_rx
 552       </chapter>
 553
 554       <chapter id="synchronisation">
 555         <title>Synchronisation</title>
 556         <para>TBD</para>
 557         <para>Locking, lots of RCU</para>
 558       </chapter>
 559     </part>
 560   </book>
 561 </set>