mac80211: restrict peer's VHT capabilities to own

Implement restricting peer VHT capabilities to the device's own
capabilities. This is useful when a single driver supports more
than one device and the devices have different capabilities
(often they will differ in the number of spatial streams), but
in particular is also necessary for VHT capability overrides to
work correctly -- otherwise it'd be possible to e.g. advertise,
due to overrides, that TX-STBC is not supported, but then still
use it to TX to the AP because it supports RX-STBC.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

2 files changed, 4 insertions, 4 deletions

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 35c1f96d9365..4cf0c9e4dd99 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1333,10 +1333,11 @@ struct ieee80211_vht_operation {
 #define IEEE80211_VHT_CAP_RXSTBC_2                              0x00000200
 #define IEEE80211_VHT_CAP_RXSTBC_3                              0x00000300
 #define IEEE80211_VHT_CAP_RXSTBC_4                              0x00000400
+#define IEEE80211_VHT_CAP_RXSTBC_MASK                           0x00000700
 #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE                 0x00000800
 #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE                 0x00001000
 #define IEEE80211_VHT_CAP_BEAMFORMER_ANTENNAS_MAX               0x00006000
-#define IEEE80211_VHT_CAP_SOUNDING_DIMENTION_MAX                0x00030000
+#define IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MAX               0x00030000
 #define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE                 0x00080000
 #define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE                 0x00100000
 #define IEEE80211_VHT_CAP_VHT_TXOP_PS                           0x00200000
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 421c3ac8c521..cdd7cea1fd4c 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1228,9 +1228,8 @@ enum ieee80211_sta_rx_bandwidth {
  * @addr: MAC address
  * @aid: AID we assigned to the station if we're an AP
  * @supp_rates: Bitmap of supported rates (per band)
- * @ht_cap: HT capabilities of this STA; restricted to our own TX capabilities
- * @vht_cap: VHT capabilities of this STA; Not restricting any capabilities
- *      of remote STA. Taking as is.
+ * @ht_cap: HT capabilities of this STA; restricted to our own capabilities
+ * @vht_cap: VHT capabilities of this STA; restricted to our own capabilities
  * @wme: indicates whether the STA supports WME. Only valid during AP-mode.
  * @drv_priv: data area for driver use, will always be aligned to
  *      sizeof(void *), size is determined in hw information.