mac80211: Disable SMPS for the monitor interface

All antennas should be operational when monitoring to maximize
reception.

Signed-off-by: Ido Yariv <idox.yariv@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index bd1fd8ea5105fead274e09b7bcd093ba97081a97..68bee813dfad08b2307beda53158b4352d00fb2c 100644 (file)
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -492,6 +492,13 @@ void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
                rx_chains_static = max(rx_chains_static, needed_static);
                rx_chains_dynamic = max(rx_chains_dynamic, needed_dynamic);
        }
+
+       /* Disable SMPS for the monitor interface */
+       sdata = rcu_dereference(local->monitor_sdata);
+       if (sdata &&
+           rcu_access_pointer(sdata->vif.chanctx_conf) == &chanctx->conf)
+               rx_chains_dynamic = rx_chains_static = local->rx_chains;
+
        rcu_read_unlock();
 
        if (!local->use_chanctx) {