===== Wireless Networking =====

===== Introduction =====

Welcome to the %%FreeBSD%% 802.11 wireless protocol and driver overview.

//If you need help setting up a wireless connection, check out the [[WiFi/FAQ|Wireless FAQ]].//

**Other pages in this section**

* [[WiFi/80211ac|80211ac]]   * [[WiFi/80211n|80211n]]   * [[WiFi/AdHoc|AdHoc]]   * [[WiFi/AggressiveMode|AggressiveMode]]   * [[WiFi/Ath10k|Ath10k]]   * [[WiFi/Ath11k|Ath11k]]   * [[WiFi/Ath12k|Ath12k]]   * [[WiFi/BringUp|BringUp]]   * [[WiFi/DFS|DFS]]   * [[WiFi/DWDS|DWDS]]   * [[WiFi/Debugging|Debugging]]   * [[WiFi/FAQ|FAQ]]   * [[WiFi/FastFrames|FastFrames]]   * [[WiFi/FixUpThings|FixUpThings]]   * [[WiFi/IdeasPage|IdeasPage]]   * [[WiFi/Iwlwifi|Iwlwifi]]   * [[WiFi/LockIssues|LockIssues]]   * [[WiFi/Mesh|Mesh]]   * [[WiFi/Mt76|Mt76]]   * [[WiFi/PowerSave|PowerSave]]   * [[WiFi/QoS|QoS]]   * [[WiFi/Radiotap|Radiotap]]   * [[WiFi/RateControl|RateControl]]   * [[WiFi/RegulatoryDomainSupport|RegulatoryDomainSupport]]   * [[WiFi/Rtw88|Rtw88]]   * [[WiFi/Rtw89|Rtw89]]   * [[WiFi/TDMA|TDMA]]   * [[WiFi/TodoStuff|TodoStuff]]   * [[WiFi/TxNotes|TxNotes]]\\ 

===== Supported Features =====

This section outlines Wireless ([[https://en.wikipedia.org/wiki/IEEE_802.11|IEEE 802.11]]) Standards and Protocol support in %%FreeBSD%%. Whether specific features are supported on particular hardware is chipset and driver specific.

Note: Feature support is dependent on chipset, and on each individual wireless driver implementation.

  * 11a, 11b, 11g, 11n operating modes
  * Half (10MHz) and Quarter (5MHz) Rate Support
    * See also: [[dev/ath_hal(4)/HalfQuarterRate|Atheros Half & Quarter Rate Support]]
  * [[WiFi/TDMA|Time Division Multiple Access (TDMA)]]
  * [[WiFi/QoS|Wireless Multi-Media Extensions (WMM/WME)]]
  * [[WiFi/DFS|Dynamic Frequency Selection & Radar Interoperability]]
  * Operating Modes: %%HostAP%%, Station, [[WiFi/AdHoc|Ad-Hoc]], Monitor
  * Multi-SSID %%HostAP%% Mode
  * Security
    * WEP, WPA, AES-CCMP, TKIP
    * Hardware Encryption Offload
  * [[WiFi/80211n|802.11n: Station (STA), HostAP modes]]
  * [[WiFi/AggressiveMode|Aggressive Mode: Best-effort traffic performance improvement in QoS BSSes]]
  * [[WiFi/PowerSave|Client-side Power Saving]]
  * [[WiFi/DWDS|Wireless Distribution System (WDS) and Dynamic Wireless Distribution System (DWDS)]]
  * A-MSDU Transmit Support
  * Atheros 802.11a Turbo Mode 
  * Atheros 802.11g %%TurboG%% Mode
  * [[WiFi/FastFrames|Atheros Fast-Frames Support]]

Additional Features:

  * [[WiFi/RateControl|Rate Control API]]
  * [[WiFi/Debugging|Extensive debugging, logging and statistics]]

===== Under Current Development =====

  * 802.11s [[WiFi/Mesh]] - initial support, under development
  * ath/ath_hal 802.11n TX aggregation/blockack support
  * Radar detection / TPC support
  * Ralink 802.11n chipset support
  * [[WiFi/LockIssues]] - stack and driver locking and locking issues

===== Chipset Support =====

Please see [[dev]] for further information. Please note, this isn't (yet) an exhaustive list.

===== Regulatory Domain Support =====

  * [[WiFi/RegulatoryDomainSupport]] - net80211 regulatory domain support
    * [[WiFi/RegulatoryDomainSupport/Requirements|Regulatory Requirements]]
  * Per-driver support (TODO)
    * if_ath regulatory support (TODO)

===== TODO / Wishlist =====

These may have some funding available to implement. Please contact freebsd-wireless@freebsd.org if you think you're able to code up one of these!

Main ideas page: [[WiFi/IdeasPage]].
Unsorted ideas page: [[WiFi/TodoStuff]].

  * [[WiFi/80211ac]] - initial 802.11ac support

  * Flesh out more 802.11n extensions to net80211
  * Migrate the software A-MPDU management from various drivers (notably iwn(4), ath(4%%))%% into net80211
  * Migrate out the atheros sample rate module into net80211
  * Teach if_ath and other drivers about the net80211 TX rate control code
  * 802.11n DFS support
  * 802.11h TPC support (driver support, related IEs)
  * 802.11h channel survey support (RX signal strength histogram, related IEs)
  * Channel steering support - ie, steering 2/5ghz capable clients to 5ghz SSIDs
  * 802.11n IBSS support
  * 802.11n mesh (11s) support
  * 802.11 wireless access in vehicular environments support ([[802.11p]])
  * [[WiFi/FixUpThings]] Fix up known things that we need for 802.11-2012 / 802.11ac-2013

===== Developer Corner =====

Here's a variety of random developer notes!

  * [[WiFi/BringUp]] - Bringing up an 802.11 driver (currently only covers bringing up 11n support)
  * [[WiFi/TxNotes]] - net80211 transmit and receive path related notes, mostly to look at concurrency issues
  * [[RTylerCroy/WifiNotes]] - Collection of notes from discussions with AdrianChadd on the %%FreeBSD%% wireless networking stack and how to work effectively with the stack

===== Further Information =====

Please contact freebsd-wireless@freebsd.org for any further information.

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{{tag>Services WiFi}}