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Hu Wang 09fb9b0cb0 DFS offload: Use hostapd_is_dfs_required() to check if DFS required 
hostapd_handle_dfs_offload() is the DFS handler for the offloaded case,
in which ieee80211_is_dfs() is used to check if the configured frequency
requires DFS or not.

When the configured channel width is not 20 (e.g., 160),
ieee80211_is_dfs() will not checked adjacent freqs, so it possibly makes
wrong conclusion for whether DFS is required.

hostapd_is_dfs_required() does similar thing with ieee80211_is_dfs()
except it supports checking whether the configured frequency and its
adjacent frequencies require DFS. So hostapd_is_dfs_required() is a more
robust and better option than ieee80211_is_dfs() to check DFS.

The issue is hostapd_is_dfs_required() is for non-offload case due to
the check of the configuration parameter ieee80211h. Add a check for
WPA_DRIVER_FLAGS_DFS_OFFLOAD to make it support the DFS offload case
(i.e., ieee80211h=0) as well.

For example, configuring the AP to start at freq=5240 with channel width
160:
- Existing hostapd checks freq=5240 is non-DFS, hence skip DFS CAC and
  transition to AP-Enabled which volatiles DFS-RADAR detection.

  LOG: "hostapd : hostapd_handle_dfs_offload: freq 5240 MHz does not
        require DFS. Continue channel/AP setup"

- This commit checks freq=5240 and its adjacent freqs are DFS required,
  hence remains in DFS state until DFS CAC completed.

  LOG: "hostapd : hostapd_handle_dfs_offload: freq 5240 MHz requires
        DFS for 4 chans"

Signed-off-by: Hu Wang <huw@codeaurora.org>
2021-06-07 17:42:56 +03:00
doc DBus: Add 'owe' to interface Capabilities 2021-01-15 12:22:47 +02:00
eap_example build: Put archive files into build/ folder too 2020-10-11 11:16:00 +03:00
hostapd AP: Add user configuration for TWT responder role 2021-06-01 00:17:03 +03:00
hs20 build: Put object files into build/ folder 2020-10-10 12:51:39 +03:00
radius_example build: Put archive files into build/ folder too 2020-10-11 11:16:00 +03:00
src DFS offload: Use hostapd_is_dfs_required() to check if DFS required 2021-06-07 17:42:56 +03:00
tests tests: Opportunistic Wireless Encryption - SA Query 2021-05-22 00:18:57 +03:00
wlantest wlantest: TKIP frame reassembly for Michael MIC check in fragmented case 2021-05-11 21:13:56 +03:00
wpa_supplicant Use a helper function to remove struct wpa_bss_tmp_disallowed entries 2021-06-03 00:11:18 +03:00
wpadebug wpadebug: Allow WebView to parse and load clear text (HTTP) 2019-06-20 00:33:43 +03:00
wpaspy wpaspy: Do not mark not-existing UNIX domain socket as UDP 2021-03-01 12:51:20 +02:00
.gitignore gitignore: Remove obsolete mac80211_hwsim entry 2020-10-11 19:36:18 +03:00
Android.mk Treat VER_2_1_DEVEL the same as VER_0_8_X 2013-12-14 21:23:39 -08:00
build_release Drop OpenSSL 0.9.8 patches to add EAP-FAST support 2016-01-13 00:17:27 +02:00
CONTRIBUTIONS Add a link to Patchwork for a list of pending patches 2021-03-06 11:26:20 +02:00
COPYING Update copyright notices for the new year 2019 2019-01-01 23:38:56 +02:00
README Update copyright notices for the new year 2019 2019-01-01 23:38:56 +02:00

README 

wpa_supplicant and hostapd
--------------------------

Copyright (c) 2002-2019, Jouni Malinen <j@w1.fi> and contributors
All Rights Reserved.

These programs are licensed under the BSD license (the one with
advertisement clause removed).

If you are submitting changes to the project, please see CONTRIBUTIONS
file for more instructions.


This package may include either wpa_supplicant, hostapd, or both. See
README file respective subdirectories (wpa_supplicant/README or
hostapd/README) for more details.

Source code files were moved around in v0.6.x releases and compared to
earlier releases, the programs are now built by first going to a
subdirectory (wpa_supplicant or hostapd) and creating build
configuration (.config) and running 'make' there (for Linux/BSD/cygwin
builds).


License
-------

This software may be distributed, used, and modified under the terms of
BSD license:

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

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   notice, this list of conditions and the following disclaimer.

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   documentation and/or other materials provided with the distribution.

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   names of its contributors may be used to endorse or promote products
   derived from this software without specific prior written permission.

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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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