feat: add 6G management

band_steering.c

@@ -32,8 +32,19 @@ bool usteer_band_steering_is_target(struct usteer_local_node *ln, struct usteer_
 	if (strcmp(ln->node.ssid, node->ssid))
 		return false;
 
-	if (node->freq < 4000)
+	/* Progressive band steering: 2.4 GHz → 5 GHz → 6 GHz */
+	if (is_2ghz_freq(ln->node.freq)) {
+		/* From 2.4 GHz, target 5 GHz only */
+		if (!is_5ghz_freq(node->freq))
+			return false;
+	} else if (is_5ghz_freq(ln->node.freq)) {
+		/* From 5 GHz, target 6 GHz only */
+		if (!is_6ghz_freq(node->freq))
+			return false;
+	} else {
+		/* From 6 GHz, no steering (already on highest band) */
 		return false;
+	}
 
 	if (!usteer_policy_node_below_max_assoc(node))
 		return false;
@@ -64,8 +75,8 @@ void usteer_band_steering_perform_steer(struct usteer_local_node *ln)
 	if (!config.band_steering_interval)
 		return;
 
-	/* Band-Steering is only available on 2.4 GHz interfaces */
-	if (ln->node.freq > 4000)
+	/* Band-Steering is available on 2.4 GHz (to 5 GHz) and 5 GHz (to 6 GHz) interfaces */
+	if (is_6ghz_freq(ln->node.freq))
 		return;
 
 	/* Check if we have an interface we can steer to */
@@ -96,4 +107,4 @@ void usteer_band_steering_perform_steer(struct usteer_local_node *ln)
 
 		si->band_steering.below_snr = false;
 	}
-}
+}

policy.c

@@ -26,16 +26,31 @@ below_assoc_threshold(struct usteer_node *node_cur, struct usteer_node *node_new
 {
 	int n_assoc_cur = node_cur->n_assoc;
 	int n_assoc_new = node_new->n_assoc;
-	bool ref_5g = node_cur->freq > 4000;
-	bool node_5g = node_new->freq > 4000;
+	int band_cur, band_new;
 
 	if (!config.load_balancing_threshold)
 		return false;
 
-	if (ref_5g && !node_5g)
-		n_assoc_new += config.band_steering_threshold;
-	else if (!ref_5g && node_5g)
+	/* Determine band priorities: 2.4 GHz = 0, 5 GHz = 1, 6 GHz = 2 */
+	if (is_2ghz_freq(node_cur->freq))
+		band_cur = 0;
+	else if (is_5ghz_freq(node_cur->freq))
+		band_cur = 1;
+	else
+		band_cur = 2;
+
+	if (is_2ghz_freq(node_new->freq))
+		band_new = 0;
+	else if (is_5ghz_freq(node_new->freq))
+		band_new = 1;
+	else
+		band_new = 2;
+
+	/* Apply band steering threshold: prefer higher bands */
+	if (band_new > band_cur)
 		n_assoc_cur += config.band_steering_threshold;
+	else if (band_cur > band_new)
+		n_assoc_new += config.band_steering_threshold;
 
 	n_assoc_new += config.load_balancing_threshold;
 

sta.c

@@ -168,10 +168,12 @@ usteer_sta_info_update(struct sta_info *si, int signal, bool avg)
 
 	si->seen = current_time;
 
-	if (si->node->freq < 4000)
+	if (is_2ghz_freq(si->node->freq))
 		si->sta->seen_2ghz = 1;
-	else
+	else if (is_5ghz_freq(si->node->freq))
 		si->sta->seen_5ghz = 1;
+	else if (is_6ghz_freq(si->node->freq))
+		si->sta->seen_6ghz = 1;
 
 	usteer_sta_info_update_timeout(si, config.local_sta_timeout);
 }

ubus.c

@@ -106,6 +106,7 @@ usteer_ubus_get_client_info(struct ubus_context *ctx, struct ubus_object *obj,
 	blob_buf_init(&b, 0);
 	blobmsg_add_u8(&b, "2ghz", sta->seen_2ghz);
 	blobmsg_add_u8(&b, "5ghz", sta->seen_5ghz);
+	blobmsg_add_u8(&b, "6ghz", sta->seen_6ghz);
 	_n = blobmsg_open_table(&b, "nodes");
 	list_for_each_entry(si, &sta->nodes, list) {
 		_cur_n = blobmsg_open_table(&b, usteer_node_name(si->node));

usteer.h

@@ -284,6 +284,7 @@ struct sta {
 
 	uint8_t seen_2ghz : 1;
 	uint8_t seen_5ghz : 1;
+	uint8_t seen_6ghz : 1;
 
 	uint8_t addr[6];
 };

utils.h

@@ -47,4 +47,20 @@ extern void debug_msg_cont(int level, const char *format, ...);
 
 #define __usteer_init __attribute__((constructor))
 
+/* WiFi band detection helpers */
+static inline bool is_2ghz_freq(int freq)
+{
+	return freq < 4000;
+}
+
+static inline bool is_5ghz_freq(int freq)
+{
+	return freq >= 4000 && freq < 5900;
+}
+
+static inline bool is_6ghz_freq(int freq)
+{
+	return freq >= 5900;
+}
+
 #endif