Commit 45521245 authored by Felix Fietkau's avatar Felix Fietkau Committed by John W. Linville
Browse files

mac80211: inform drivers about the off-channel status on channel changes 



For some drivers it can be useful to know whether the channel they're
supposed to switch to is going to be used for short off-channel work or
scanning, or whether the hardware is expected to stay on it for a while
longer. This is important for various kinds of calibration work, which
takes longer to complete and should keep some persistent state, even if
the channel temporarily changes.

Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent a0daa0e7

include/net/mac80211.h

+3 −0
Original line number Diff line number Diff line
@@ -625,11 +625,14 @@ struct ieee80211_rx_status { 
 *	may turn the device off as much as possible. Typically, this flag will

 *	be set when an interface is set UP but not associated or scanning, but

 *	it can also be unset in that case when monitor interfaces are active.

 * @IEEE80211_CONF_OFFCHANNEL: The device is currently not on its main

 *	operating channel.

 */

enum ieee80211_conf_flags {

	IEEE80211_CONF_MONITOR		= (1<<0),

	IEEE80211_CONF_PS		= (1<<1),

	IEEE80211_CONF_IDLE		= (1<<2),

	IEEE80211_CONF_OFFCHANNEL	= (1<<3),

};

net/mac80211/main.c

+3 −0
Original line number Diff line number Diff line
@@ -107,12 +107,15 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) 
	if (scan_chan) {

		chan = scan_chan;

		channel_type = NL80211_CHAN_NO_HT;

		local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;

	} else if (local->tmp_channel) {

		chan = scan_chan = local->tmp_channel;

		channel_type = local->tmp_channel_type;

		local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;

	} else {

		chan = local->oper_channel;

		channel_type = local->_oper_channel_type;

		local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;

	}



	if (chan != local->hw.conf.channel ||

CRA Git | Maintained and supported by SUSTech CRA and CCSE