mac80211: handle operating mode notif in beacon/assoc response
In beacons and association response frames an AP may include an
operating mode notification element to advertise changes in the
number of spatial streams it can receive. Handle this using the
existing function that handles the action frame, but only handle
NSS changes, not bandwidth changes which aren't allowed here.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index 0951f74..a9549fc 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -141,7 +141,7 @@
void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, u8 opmode,
- enum ieee80211_band band)
+ enum ieee80211_band band, bool nss_only)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
@@ -164,6 +164,9 @@
changed |= IEEE80211_RC_NSS_CHANGED;
}
+ if (nss_only)
+ goto change;
+
switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) {
case IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ:
sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_20;
@@ -185,6 +188,7 @@
changed |= IEEE80211_RC_NSS_CHANGED;
}
+ change:
if (changed)
rate_control_rate_update(local, sband, sta, changed);
}