iw: handle NL80211_ATTR_EXT_FEATURES attribute

Print if VHT-IBSS is supported.

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

diff --git a/info.c b/info.c
index 66887e38a81abc7d8e942dca72df13fadac53e47..91dff158d043756b2b33951d0656b06fd37d54ca 100644 (file)
--- a/info.c
+++ b/info.c
@@ -63,6 +63,18 @@ static char *dfs_state_name(enum nl80211_dfs_state state)
        }
 }
 
+static int ext_feature_isset(const unsigned char *ext_features, int ext_features_len,
+                            enum nl80211_ext_feature_index ftidx)
+{
+       unsigned char ft_byte;
+
+       if ((int) ftidx / 8 >= ext_features_len)
+               return 0;
+
+       ft_byte = ext_features[ftidx / 8];
+       return (ft_byte & BIT(ftidx % 8)) != 0;
+}
+
 static int print_phy_handler(struct nl_msg *msg, void *arg)
 {
        struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
@@ -601,6 +613,14 @@ broken_combination:
                        printf("\tDevice supports TDLS channel switching\n");
        }
 
+       if (tb_msg[NL80211_ATTR_EXT_FEATURES]) {
+               struct nlattr *tb = tb_msg[NL80211_ATTR_EXT_FEATURES];
+
+               if (ext_feature_isset(nla_data(tb), nla_len(tb),
+                                     NL80211_EXT_FEATURE_VHT_IBSS))
+                       printf("\tDevice supports VHT-IBSS.\n");
+       }
+
        if (tb_msg[NL80211_ATTR_TDLS_SUPPORT])
                printf("\tDevice supports T-DLS.\n");