Giters

d2r2 / upstream-hostapd-force-ht40-mode-patch

Add option "force_ht40" to force 802.11n 40MHz AP mode, to override overlapping BSSes detection and escape fallback to 20MHz mode.

Geek Repo:Geek Repo

Github PK Tool:Github PK Tool

hostapdnetworkingpatch

Patch for upstream hostapd to force 40MHz operation

This patch is completely based on beautiful hostapd fork: https://github.com/ivkos/hostap-force-ht40.

Purpose of this project - to get hostapd installation which work good in modern urban conditions, where radio air is filled with neighboring Wi-Fi points. Without this modification hostapd service regularly fallback to 20MHz mode, reporting that there are overlapping BSSes exist around.

Aim of this project - to have minimal patch for upstream hostapd release, without necessity to keep the whole hostapd branch in sync with upstream sources.

Disclamer 1

Remember that this change is in violation of IEEE Std 802.11-2012, 10.15.3.2 and is entirely on your conscience.

Disclamer 2

I'm not recommended to use hostapd with wifi hardware adapters based on Realtek chipsets. My personal experience demonstrate - Realtek had bad support of nl80211 netlink interface, and, as a result, hostapd behavior looks buggy with Realtek hardware. Opposite - and this is again from my personal experience - Ralink network devices work much more stably and reliably with hostapd.

Compilation and installation

  • Download and unzip current stable hostapd sources: https://w1.fi/hostapd/ (Latest release section).
  • Copy patch file upstream-hostapd-force-ht40-mode.patch from here to hostapd source root folder (where hostapd, src folders located).
  • Run patch -p0 < upstream-hostapd-force-ht40-mode.patch to apply patch.
  • Execute hostapd compilation with make with futher installation with make install.
  • Add force_ht40=1 option to hostapd.conf file to force 40MHz mode.
  • Start hostapd service.

Note 1: Do not forget to copy deconfig to .config and uncomment #CONFIG_IEEE80211N=y, before hostapd compilation. Note 2: You can additionally monitor how your hostapd service work via such Android application as "WiFi Analyzer".

Tested with equipment

  • Orance PI Zero Plus with external WiFi adapter COMFAST CF-WU7300ND (Ralink RT3072 chipset) 2.4Ghz.

Contact

Please use Github issue tracker for filing bugs or feature requests.

License

Licensed under BSD License.

About

Add option "force_ht40" to force 802.11n 40MHz AP mode, to override overlapping BSSes detection and escape fallback to 20MHz mode.

hostapdnetworkingpatch

License:BSD 2-Clause "Simplified" License