Johannes Berg | 352de557 | 2010-08-17 12:04:34 +0200 | [diff] [blame^] | 1 | <?xml version="1.0" encoding="UTF-8"?> |
| 2 | <!DOCTYPE set PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" |
| 3 | "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []> |
| 4 | <set> |
| 5 | <setinfo> |
| 6 | <title>The 802.11 subsystems – 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 | <para> |
| 73 | MISSING |
| 74 | </para> |
| 75 | </abstract> |
| 76 | </bookinfo> |
| 77 | <part><chapter> |
| 78 | !Finclude/net/cfg80211.h ieee80211_band |
| 79 | </chapter></part> |
| 80 | </book> |
| 81 | <book id="mac80211-developers-guide"> |
| 82 | <bookinfo> |
| 83 | <title>The mac80211 subsystem</title> |
| 84 | <abstract> |
| 85 | !Pinclude/net/mac80211.h Introduction |
| 86 | !Pinclude/net/mac80211.h Warning |
| 87 | </abstract> |
| 88 | </bookinfo> |
| 89 | |
| 90 | <toc></toc> |
| 91 | |
| 92 | <!-- |
| 93 | Generally, this document shall be ordered by increasing complexity. |
| 94 | It is important to note that readers should be able to read only |
| 95 | the first few sections to get a working driver and only advanced |
| 96 | usage should require reading the full document. |
| 97 | --> |
| 98 | |
| 99 | <part> |
| 100 | <title>The basic mac80211 driver interface</title> |
| 101 | <partintro> |
| 102 | <para> |
| 103 | You should read and understand the information contained |
| 104 | within this part of the book while implementing a driver. |
| 105 | In some chapters, advanced usage is noted, that may be |
| 106 | skipped at first. |
| 107 | </para> |
| 108 | <para> |
| 109 | This part of the book only covers station and monitor mode |
| 110 | functionality, additional information required to implement |
| 111 | the other modes is covered in the second part of the book. |
| 112 | </para> |
| 113 | </partintro> |
| 114 | |
| 115 | <chapter id="basics"> |
| 116 | <title>Basic hardware handling</title> |
| 117 | <para>TBD</para> |
| 118 | <para> |
| 119 | This chapter shall contain information on getting a hw |
| 120 | struct allocated and registered with mac80211. |
| 121 | </para> |
| 122 | <para> |
| 123 | Since it is required to allocate rates/modes before registering |
| 124 | a hw struct, this chapter shall also contain information on setting |
| 125 | up the rate/mode structs. |
| 126 | </para> |
| 127 | <para> |
| 128 | Additionally, some discussion about the callbacks and |
| 129 | the general programming model should be in here, including |
| 130 | the definition of ieee80211_ops which will be referred to |
| 131 | a lot. |
| 132 | </para> |
| 133 | <para> |
| 134 | Finally, a discussion of hardware capabilities should be done |
| 135 | with references to other parts of the book. |
| 136 | </para> |
| 137 | <!-- intentionally multiple !F lines to get proper order --> |
| 138 | !Finclude/net/mac80211.h ieee80211_hw |
| 139 | !Finclude/net/mac80211.h ieee80211_hw_flags |
| 140 | !Finclude/net/mac80211.h SET_IEEE80211_DEV |
| 141 | !Finclude/net/mac80211.h SET_IEEE80211_PERM_ADDR |
| 142 | !Finclude/net/mac80211.h ieee80211_ops |
| 143 | !Finclude/net/mac80211.h ieee80211_alloc_hw |
| 144 | !Finclude/net/mac80211.h ieee80211_register_hw |
| 145 | !Finclude/net/mac80211.h ieee80211_get_tx_led_name |
| 146 | !Finclude/net/mac80211.h ieee80211_get_rx_led_name |
| 147 | !Finclude/net/mac80211.h ieee80211_get_assoc_led_name |
| 148 | !Finclude/net/mac80211.h ieee80211_get_radio_led_name |
| 149 | !Finclude/net/mac80211.h ieee80211_unregister_hw |
| 150 | !Finclude/net/mac80211.h ieee80211_free_hw |
| 151 | </chapter> |
| 152 | |
| 153 | <chapter id="phy-handling"> |
| 154 | <title>PHY configuration</title> |
| 155 | <para>TBD</para> |
| 156 | <para> |
| 157 | This chapter should describe PHY handling including |
| 158 | start/stop callbacks and the various structures used. |
| 159 | </para> |
| 160 | !Finclude/net/mac80211.h ieee80211_conf |
| 161 | !Finclude/net/mac80211.h ieee80211_conf_flags |
| 162 | </chapter> |
| 163 | |
| 164 | <chapter id="iface-handling"> |
| 165 | <title>Virtual interfaces</title> |
| 166 | <para>TBD</para> |
| 167 | <para> |
| 168 | This chapter should describe virtual interface basics |
| 169 | that are relevant to the driver (VLANs, MGMT etc are not.) |
| 170 | It should explain the use of the add_iface/remove_iface |
| 171 | callbacks as well as the interface configuration callbacks. |
| 172 | </para> |
| 173 | <para>Things related to AP mode should be discussed there.</para> |
| 174 | <para> |
| 175 | Things related to supporting multiple interfaces should be |
| 176 | in the appropriate chapter, a BIG FAT note should be here about |
| 177 | this though and the recommendation to allow only a single |
| 178 | interface in STA mode at first! |
| 179 | </para> |
| 180 | !Finclude/net/mac80211.h ieee80211_vif |
| 181 | </chapter> |
| 182 | |
| 183 | <chapter id="rx-tx"> |
| 184 | <title>Receive and transmit processing</title> |
| 185 | <sect1> |
| 186 | <title>what should be here</title> |
| 187 | <para>TBD</para> |
| 188 | <para> |
| 189 | This should describe the receive and transmit |
| 190 | paths in mac80211/the drivers as well as |
| 191 | transmit status handling. |
| 192 | </para> |
| 193 | </sect1> |
| 194 | <sect1> |
| 195 | <title>Frame format</title> |
| 196 | !Pinclude/net/mac80211.h Frame format |
| 197 | </sect1> |
| 198 | <sect1> |
| 199 | <title>Packet alignment</title> |
| 200 | !Pnet/mac80211/rx.c Packet alignment |
| 201 | </sect1> |
| 202 | <sect1> |
| 203 | <title>Calling into mac80211 from interrupts</title> |
| 204 | !Pinclude/net/mac80211.h Calling mac80211 from interrupts |
| 205 | </sect1> |
| 206 | <sect1> |
| 207 | <title>functions/definitions</title> |
| 208 | !Finclude/net/mac80211.h ieee80211_rx_status |
| 209 | !Finclude/net/mac80211.h mac80211_rx_flags |
| 210 | !Finclude/net/mac80211.h ieee80211_tx_info |
| 211 | !Finclude/net/mac80211.h ieee80211_rx |
| 212 | !Finclude/net/mac80211.h ieee80211_rx_irqsafe |
| 213 | !Finclude/net/mac80211.h ieee80211_tx_status |
| 214 | !Finclude/net/mac80211.h ieee80211_tx_status_irqsafe |
| 215 | !Finclude/net/mac80211.h ieee80211_rts_get |
| 216 | !Finclude/net/mac80211.h ieee80211_rts_duration |
| 217 | !Finclude/net/mac80211.h ieee80211_ctstoself_get |
| 218 | !Finclude/net/mac80211.h ieee80211_ctstoself_duration |
| 219 | !Finclude/net/mac80211.h ieee80211_generic_frame_duration |
| 220 | !Finclude/net/mac80211.h ieee80211_wake_queue |
| 221 | !Finclude/net/mac80211.h ieee80211_stop_queue |
| 222 | !Finclude/net/mac80211.h ieee80211_wake_queues |
| 223 | !Finclude/net/mac80211.h ieee80211_stop_queues |
| 224 | </sect1> |
| 225 | </chapter> |
| 226 | |
| 227 | <chapter id="filters"> |
| 228 | <title>Frame filtering</title> |
| 229 | !Pinclude/net/mac80211.h Frame filtering |
| 230 | !Finclude/net/mac80211.h ieee80211_filter_flags |
| 231 | </chapter> |
| 232 | </part> |
| 233 | |
| 234 | <part id="advanced"> |
| 235 | <title>Advanced driver interface</title> |
| 236 | <partintro> |
| 237 | <para> |
| 238 | Information contained within this part of the book is |
| 239 | of interest only for advanced interaction of mac80211 |
| 240 | with drivers to exploit more hardware capabilities and |
| 241 | improve performance. |
| 242 | </para> |
| 243 | </partintro> |
| 244 | |
| 245 | <chapter id="hardware-crypto-offload"> |
| 246 | <title>Hardware crypto acceleration</title> |
| 247 | !Pinclude/net/mac80211.h Hardware crypto acceleration |
| 248 | <!-- intentionally multiple !F lines to get proper order --> |
| 249 | !Finclude/net/mac80211.h set_key_cmd |
| 250 | !Finclude/net/mac80211.h ieee80211_key_conf |
| 251 | !Finclude/net/mac80211.h ieee80211_key_alg |
| 252 | !Finclude/net/mac80211.h ieee80211_key_flags |
| 253 | </chapter> |
| 254 | |
| 255 | <chapter id="powersave"> |
| 256 | <title>Powersave support</title> |
| 257 | !Pinclude/net/mac80211.h Powersave support |
| 258 | </chapter> |
| 259 | |
| 260 | <chapter id="beacon-filter"> |
| 261 | <title>Beacon filter support</title> |
| 262 | !Pinclude/net/mac80211.h Beacon filter support |
| 263 | !Finclude/net/mac80211.h ieee80211_beacon_loss |
| 264 | </chapter> |
| 265 | |
| 266 | <chapter id="qos"> |
| 267 | <title>Multiple queues and QoS support</title> |
| 268 | <para>TBD</para> |
| 269 | !Finclude/net/mac80211.h ieee80211_tx_queue_params |
| 270 | </chapter> |
| 271 | |
| 272 | <chapter id="AP"> |
| 273 | <title>Access point mode support</title> |
| 274 | <para>TBD</para> |
| 275 | <para>Some parts of the if_conf should be discussed here instead</para> |
| 276 | <para> |
| 277 | Insert notes about VLAN interfaces with hw crypto here or |
| 278 | in the hw crypto chapter. |
| 279 | </para> |
| 280 | !Finclude/net/mac80211.h ieee80211_get_buffered_bc |
| 281 | !Finclude/net/mac80211.h ieee80211_beacon_get |
| 282 | </chapter> |
| 283 | |
| 284 | <chapter id="multi-iface"> |
| 285 | <title>Supporting multiple virtual interfaces</title> |
| 286 | <para>TBD</para> |
| 287 | <para> |
| 288 | Note: WDS with identical MAC address should almost always be OK |
| 289 | </para> |
| 290 | <para> |
| 291 | Insert notes about having multiple virtual interfaces with |
| 292 | different MAC addresses here, note which configurations are |
| 293 | supported by mac80211, add notes about supporting hw crypto |
| 294 | with it. |
| 295 | </para> |
| 296 | </chapter> |
| 297 | |
| 298 | <chapter id="hardware-scan-offload"> |
| 299 | <title>Hardware scan offload</title> |
| 300 | <para>TBD</para> |
| 301 | !Finclude/net/mac80211.h ieee80211_scan_completed |
| 302 | </chapter> |
| 303 | </part> |
| 304 | |
| 305 | <part id="rate-control"> |
| 306 | <title>Rate control interface</title> |
| 307 | <partintro> |
| 308 | <para>TBD</para> |
| 309 | <para> |
| 310 | This part of the book describes the rate control algorithm |
| 311 | interface and how it relates to mac80211 and drivers. |
| 312 | </para> |
| 313 | </partintro> |
| 314 | <chapter id="dummy"> |
| 315 | <title>dummy chapter</title> |
| 316 | <para>TBD</para> |
| 317 | </chapter> |
| 318 | </part> |
| 319 | |
| 320 | <part id="internal"> |
| 321 | <title>Internals</title> |
| 322 | <partintro> |
| 323 | <para>TBD</para> |
| 324 | <para> |
| 325 | This part of the book describes mac80211 internals. |
| 326 | </para> |
| 327 | </partintro> |
| 328 | |
| 329 | <chapter id="key-handling"> |
| 330 | <title>Key handling</title> |
| 331 | <sect1> |
| 332 | <title>Key handling basics</title> |
| 333 | !Pnet/mac80211/key.c Key handling basics |
| 334 | </sect1> |
| 335 | <sect1> |
| 336 | <title>MORE TBD</title> |
| 337 | <para>TBD</para> |
| 338 | </sect1> |
| 339 | </chapter> |
| 340 | |
| 341 | <chapter id="rx-processing"> |
| 342 | <title>Receive processing</title> |
| 343 | <para>TBD</para> |
| 344 | </chapter> |
| 345 | |
| 346 | <chapter id="tx-processing"> |
| 347 | <title>Transmit processing</title> |
| 348 | <para>TBD</para> |
| 349 | </chapter> |
| 350 | |
| 351 | <chapter id="sta-info"> |
| 352 | <title>Station info handling</title> |
| 353 | <sect1> |
| 354 | <title>Programming information</title> |
| 355 | !Fnet/mac80211/sta_info.h sta_info |
| 356 | !Fnet/mac80211/sta_info.h ieee80211_sta_info_flags |
| 357 | </sect1> |
| 358 | <sect1> |
| 359 | <title>STA information lifetime rules</title> |
| 360 | !Pnet/mac80211/sta_info.c STA information lifetime rules |
| 361 | </sect1> |
| 362 | </chapter> |
| 363 | |
| 364 | <chapter id="synchronisation"> |
| 365 | <title>Synchronisation</title> |
| 366 | <para>TBD</para> |
| 367 | <para>Locking, lots of RCU</para> |
| 368 | </chapter> |
| 369 | </part> |
| 370 | </book> |
| 371 | </set> |