mac80211: allow CSA to self with immediate quiet

Currently, due to some buggy APs that continue to include
CSA IEs after the switch, we ignore CSA to same channel.
However, some other APs may do CSA to self in order to have
immediate quiet. Allow it. Do it only for beacons.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 411656614e9acf13af16bb3b12e26def5d1d2b2e..e20456c2d6fba059430f321fc66d165bfe457ee7 100644 (file)
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1353,7 +1353,8 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
        }
 
        if (cfg80211_chandef_identical(&csa_ie.chandef,
-                                      &sdata->vif.bss_conf.chandef)) {
+                                      &sdata->vif.bss_conf.chandef) &&
+           (!csa_ie.mode || !beacon)) {
                if (ifmgd->csa_ignored_same_chan)
                        return;
                sdata_info(sdata,