cfg80211: add VHT support for IBSS

Add NL80211_EXT_FEATURE_VHT_IBSS flag and VHT
support for IBSS.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

2 files changed, 14 insertions, 2 deletions

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 2dcf9bba317c..8ee31f108407 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -4328,11 +4328,13 @@ enum nl80211_feature_flags {
 
 /**
  * enum nl80211_ext_feature_index - bit index of extended features.
+ * @NL80211_EXT_FEATURE_VHT_IBSS: This driver supports IBSS with VHT datarates.
  *
  * @NUM_NL80211_EXT_FEATURES: number of extended features.
  * @MAX_NL80211_EXT_FEATURES: highest extended feature index.
  */
 enum nl80211_ext_feature_index {
+        NL80211_EXT_FEATURE_VHT_IBSS,
 
         /* add new features before the definition below */
         NUM_NL80211_EXT_FEATURES,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 9c6e23ede5b2..66666fdf1c8d 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -7265,8 +7265,18 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
                 break;
         case NL80211_CHAN_WIDTH_20:
         case NL80211_CHAN_WIDTH_40:
-                if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
-                        break;
+                if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
+                        return -EINVAL;
+                break;
+        case NL80211_CHAN_WIDTH_80:
+        case NL80211_CHAN_WIDTH_80P80:
+        case NL80211_CHAN_WIDTH_160:
+                if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
+                        return -EINVAL;
+                if (!wiphy_ext_feature_isset(&rdev->wiphy,
+                                             NL80211_EXT_FEATURE_VHT_IBSS))
+                        return -EINVAL;
+                break;
         default:
                 return -EINVAL;
         }