From a110a3b79177ddd7e7295671df97fb5386406835 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 6 Feb 2024 16:54:08 +0200 Subject: wifi: cfg80211: optionally support monitor on disabled channels If the hardware supports a disabled channel, it may in some cases be possible to use monitor mode (without any transmit) on it when it's otherwise disabled. Add a new channel flag IEEE80211_CHAN_CAN_MONITOR that makes it possible for a driver to indicate such a thing. Make it per channel so drivers could have a choice with it, perhaps it's only possible on some channels, perhaps some channels are not supported at all, but still there and marked disabled. In _nl80211_parse_chandef() simplify the code and check only for an unknown channel, _cfg80211_chandef_usable() will later check for IEEE80211_CHAN_DISABLED anyway. Signed-off-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://msgid.link/20240206164849.87fad3a21a09.I9116b2fdc2e2c9fd59a9273a64db7fcb41fc0328@changeid Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/net') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 7bb8484e859e..0a3151587556 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -122,6 +122,9 @@ struct wiphy; * not permitted using this channel * @IEEE80211_CHAN_NO_6GHZ_AFC_CLIENT: Client connection with AFC AP * not permitted using this channel + * @IEEE80211_CHAN_CAN_MONITOR: This channel can be used for monitor + * mode even in the presence of other (regulatory) restrictions, + * even if it is otherwise disabled. */ enum ieee80211_channel_flags { IEEE80211_CHAN_DISABLED = 1<<0, @@ -148,6 +151,7 @@ enum ieee80211_channel_flags { IEEE80211_CHAN_DFS_CONCURRENT = 1<<21, IEEE80211_CHAN_NO_6GHZ_VLP_CLIENT = 1<<22, IEEE80211_CHAN_NO_6GHZ_AFC_CLIENT = 1<<23, + IEEE80211_CHAN_CAN_MONITOR = 1<<24, }; #define IEEE80211_CHAN_NO_HT40 \ -- cgit v1.2.3