Re: [PATCH v3] mac80211: Allow scanning single channel if other VIF is associated.

[Johannes Berg <johannes@sipsolutions.net>]

On Tue, 2010-09-28 at 14:17 -0700, greearb@candelatech.com wrote:
> From: Ben Greear <greearb@candelatech.com>
> 
> This patch aims to decrease channel switching when there is at least one
> interface associated.  This should help multiple station interfaces co-exist
> on the same hardware, especially in WPA mode.
> 
> Signed-off-by: Ben Greear <greearb@candelatech.com>
> ---
> 
> v2 -> v3:  Just check can_scan_one flag and if set and there is
>    a vif associated, select the active channel as scan-channel and
>    let core scanning logic function as designed.
> 
>    This gets much of the really ugly logic changes out of the
>    scanning core, and any optimizations to this should help
>    general purpose scanning on a single channel as well.

> --- a/include/linux/nl80211.h
> +++ b/include/linux/nl80211.h
> @@ -965,6 +965,8 @@ enum nl80211_attrs {
>  	NL80211_ATTR_CONTROL_PORT_ETHERTYPE,
>  	NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT,
>  
> +	NL80211_ATTR_SCAN_ONE_IF_ASSOC,
> +

Still NACK, I don't see the need for new API for this odd case.

Please don't resubmit similar patches to this, I don't want to nack them
all the time.

johannes