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>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 8fa66c8243b7b0419a191d029026a9e17bdab87d..5567dc173fde920675aa7ffd86e9702ad0251337 100644 (file)
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1326,10 +1326,11 @@ 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