monitor: print out extended feature name

This prints out the NL80211_* enum name for extended features
rather than a hex string.

monitor/nlmon.c

@@ -5415,6 +5415,85 @@ static void print_eapol(unsigned int level, const char *label,
 	print_hexdump(level + 1, data, size);
 }
 
+#define EXT_ENTRY(a) #a
+
+static const char *ext_feature_map[] = {
+	EXT_ENTRY(NL80211_EXT_FEATURE_VHT_IBSS),
+	EXT_ENTRY(NL80211_EXT_FEATURE_RRM),
+	EXT_ENTRY(NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER),
+	EXT_ENTRY(NL80211_EXT_FEATURE_SCAN_START_TIME),
+	EXT_ENTRY(NL80211_EXT_FEATURE_BSS_PARENT_TSF),
+	EXT_ENTRY(NL80211_EXT_FEATURE_SET_SCAN_DWELL),
+	EXT_ENTRY(NL80211_EXT_FEATURE_BEACON_RATE_LEGACY),
+	EXT_ENTRY(NL80211_EXT_FEATURE_BEACON_RATE_HT),
+	EXT_ENTRY(NL80211_EXT_FEATURE_BEACON_RATE_VHT),
+	EXT_ENTRY(NL80211_EXT_FEATURE_FILS_STA),
+	EXT_ENTRY(NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA),
+	EXT_ENTRY(NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA_CONNECTED),
+	EXT_ENTRY(NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI),
+	EXT_ENTRY(NL80211_EXT_FEATURE_CQM_RSSI_LIST),
+	EXT_ENTRY(NL80211_EXT_FEATURE_FILS_SK_OFFLOAD),
+	EXT_ENTRY(NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK),
+	EXT_ENTRY(NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X),
+	EXT_ENTRY(NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME),
+	EXT_ENTRY(NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP),
+	EXT_ENTRY(NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE),
+	EXT_ENTRY(NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION),
+	EXT_ENTRY(NL80211_EXT_FEATURE_MFP_OPTIONAL),
+	EXT_ENTRY(NL80211_EXT_FEATURE_LOW_SPAN_SCAN),
+	EXT_ENTRY(NL80211_EXT_FEATURE_LOW_POWER_SCAN),
+	EXT_ENTRY(NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN),
+	EXT_ENTRY(NL80211_EXT_FEATURE_DFS_OFFLOAD),
+	EXT_ENTRY(NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211),
+	EXT_ENTRY(NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT),
+	EXT_ENTRY(NL80211_EXT_FEATURE_TXQS),
+	EXT_ENTRY(NL80211_EXT_FEATURE_SCAN_RANDOM_SN),
+	EXT_ENTRY(NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT),
+	EXT_ENTRY(NL80211_EXT_FEATURE_CAN_REPLACE_PTK0),
+	EXT_ENTRY(NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER),
+	EXT_ENTRY(NL80211_EXT_FEATURE_AIRTIME_FAIRNESS),
+	EXT_ENTRY(NL80211_EXT_FEATURE_AP_PMKSA_CACHING),
+	EXT_ENTRY(NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD),
+	EXT_ENTRY(NL80211_EXT_FEATURE_EXT_KEY_ID),
+	EXT_ENTRY(NL80211_EXT_FEATURE_STA_TX_PWR),
+	EXT_ENTRY(NL80211_EXT_FEATURE_SAE_OFFLOAD),
+	EXT_ENTRY(NL80211_EXT_FEATURE_VLAN_OFFLOAD),
+	EXT_ENTRY(NL80211_EXT_FEATURE_AQL),
+	EXT_ENTRY(NL80211_EXT_FEATURE_BEACON_PROTECTION),
+	EXT_ENTRY(NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH),
+	EXT_ENTRY(NL80211_EXT_FEATURE_PROTECTED_TWT),
+	EXT_ENTRY(NL80211_EXT_FEATURE_DEL_IBSS_STA),
+	EXT_ENTRY(NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS),
+	EXT_ENTRY(NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT),
+	EXT_ENTRY(NL80211_EXT_FEATURE_SCAN_FREQ_KHZ),
+	EXT_ENTRY(NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_TX_STATUS),
+	EXT_ENTRY(NL80211_EXT_FEATURE_OPERATING_CHANNEL_VALIDATION),
+	EXT_ENTRY(NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK),
+	EXT_ENTRY(NL80211_EXT_FEATURE_SAE_OFFLOAD_AP),
+	EXT_ENTRY(NL80211_EXT_FEATURE_FILS_DISCOVERY),
+	EXT_ENTRY(NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP),
+	EXT_ENTRY(NL80211_EXT_FEATURE_BEACON_RATE_HE),
+};
+
+static void print_ext_features(unsigned int level, const char *label,
+					const void *data, uint16_t size)
+{
+	int i;
+	uint16_t bits;
+
+	if (L_ARRAY_SIZE(ext_feature_map) < size * 8)
+		bits = L_ARRAY_SIZE(ext_feature_map);
+	else
+		bits = size * 8;
+
+	print_attr(level, "Extended Features:");
+
+	for (i = 0; i < bits; i++) {
+		if (test_bit(data, i))
+			print_attr(level + 1, "%s", ext_feature_map[i]);
+	}
+}
+
 /*
  * Control Port sends a EAPoL frame inside ATTR_FRAME and not a management
  * frame.  So a separate table with all the possible attributes is provided
@@ -5911,7 +5990,8 @@ static const struct attr_entry attr_table[] = {
 	{ NL80211_ATTR_USE_RRM,
 			"Use RRM", ATTR_FLAG },
 	{ NL80211_ATTR_EXT_FEATURES,
-			"Extended Features" },
+			"Extended Features", ATTR_CUSTOM,
+			{ .function = print_ext_features} },
 	{ NL80211_ATTR_FILS_KEK,
 			"FILS KEK" },
 	{ NL80211_ATTR_FILS_NONCES,