mac80211: Support on-channel scan option.

This based on an idea posted by Stanislaw Gruszka,
though I accept full blame for the implementation!

This has been tested with ath9k.

The idea is to let users scan on the current operating
channel without interrupting normal traffic more than
absolutely necessary (changing power level might reset
some hardware, for instance).

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index bd7a451b0849..1d074260acd1 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -803,6 +803,8 @@ struct tpt_led_trigger {
  *      well be on the operating channel
  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
  *      determine if we are on the operating channel or not
+ * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
+ *      channel. This should not interrupt normal traffic.
  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
  *      that the scan completed.
  * @SCAN_ABORTED: Set for our scan work function when the driver reported
@@ -811,6 +813,7 @@ struct tpt_led_trigger {
 enum {
         SCAN_SW_SCANNING,
         SCAN_HW_SCANNING,
+        SCAN_ONCHANNEL_SCANNING,
         SCAN_COMPLETED,
         SCAN_ABORTED,
 };