sta: add sta_connection_state enum

Make the connection state of a sta-info more readable by introducing an
enum for the STA connection state.

Also switch come comparison cases to use the explicit enum values to
make the code more readable.

Signed-off-by: David Bauer <mail@david-bauer.net>

local_node.c

@@ -153,7 +153,7 @@ usteer_local_node_assoc_update(struct sta_info *si, struct blob_attr *data)
 
 	blobmsg_parse(policy, __MSG_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
 	if (tb[MSG_ASSOC] && blobmsg_get_u8(tb[MSG_ASSOC]))
-		si->connected = 1;
+		si->connected = STA_CONNECTED;
 
 	if (si->node->freq < 4000)
 		si->sta->seen_2ghz = 1;
@@ -174,7 +174,7 @@ usteer_local_node_set_assoc(struct usteer_local_node *ln, struct blob_attr *cl)
 
 	list_for_each_entry(si, &node->sta_info, node_list) {
 		if (si->connected)
-			si->connected = 2;
+			si->connected = STA_DISCONNECTED;
 	}
 
 	blobmsg_for_each_attr(cur, cl, rem) {
@@ -193,17 +193,17 @@ usteer_local_node_set_assoc(struct usteer_local_node *ln, struct blob_attr *cl)
 			h->update_sta(node, si);
 		}
 		usteer_local_node_assoc_update(si, cur);
-		if (si->connected == 1)
+		if (si->connected == STA_CONNECTED)
 			n_assoc++;
 	}
 
 	node->n_assoc = n_assoc;
 
 	list_for_each_entry(si, &node->sta_info, node_list) {
-		if (si->connected != 2)
+		if (si->connected != STA_DISCONNECTED)
 			continue;
 
-		si->connected = 0;
+		si->connected = STA_NOT_CONNECTED;
 		usteer_sta_info_update_timeout(si, config.local_sta_timeout);
 		MSG(VERBOSE, "station "MAC_ADDR_FMT" disconnected from node %s\n",
 			MAC_ADDR_DATA(si->sta->addr), usteer_node_name(node));

policy.c

@@ -334,7 +334,7 @@ usteer_local_node_roam_check(struct usteer_local_node *ln, struct uevent *ev)
 	min_signal = snr_to_signal(&ln->node, min_signal);
 
 	list_for_each_entry(si, &ln->node.sta_info, node_list) {
-		if (!si->connected || si->signal >= min_signal ||
+		if (si->connected != STA_CONNECTED || si->signal >= min_signal ||
 		    current_time - si->roam_kick < config.roam_trigger_interval) {
 			usteer_roam_set_state(si, ROAM_TRIGGER_IDLE, ev);
 			continue;
@@ -365,7 +365,7 @@ usteer_local_node_snr_kick(struct usteer_local_node *ln)
 	ev.threshold.ref = min_signal;
 
 	list_for_each_entry(si, &ln->node.sta_info, node_list) {
-		if (!si->connected)
+		if (si->connected != STA_CONNECTED)
 			continue;
 
 		if (si->signal >= min_signal)
@@ -434,7 +434,7 @@ usteer_local_node_kick(struct usteer_local_node *ln)
 	list_for_each_entry(si, &ln->node.sta_info, node_list) {
 		struct sta_info *tmp;
 
-		if (!si->connected)
+		if (si->connected != STA_CONNECTED)
 			continue;
 
 		if (is_more_kickable(kick1, si))

sta.c

@@ -111,7 +111,7 @@ usteer_sta_info_get(struct sta *sta, struct usteer_node *node, bool *create)
 void
 usteer_sta_info_update_timeout(struct sta_info *si, int timeout)
 {
-	if (si->connected == 1)
+	if (si->connected == STA_CONNECTED)
 		usteer_timeout_cancel(&tq, &si->timeout);
 	else if (timeout > 0)
 		usteer_timeout_set(&tq, &si->timeout, timeout);
@@ -145,7 +145,7 @@ void
 usteer_sta_info_update(struct sta_info *si, int signal, bool avg)
 {
 	/* ignore probe request signal when connected */
-	if (si->connected == 1 && si->signal != NO_SIGNAL && !avg)
+	if (si->connected == STA_CONNECTED && si->signal != NO_SIGNAL && !avg)
 		signal = NO_SIGNAL;
 
 	if (signal != NO_SIGNAL)

ubus.c

@@ -540,7 +540,7 @@ void usteer_ubus_kick_client(struct sta_info *si)
 	blobmsg_add_u32(&b, "reason", config.load_kick_reason_code);
 	blobmsg_add_u8(&b, "deauth", 1);
 	ubus_invoke(ubus_ctx, ln->obj_id, "del_client", b.head, NULL, 0, 100);
-	si->connected = 0;
+	si->connected = STA_NOT_CONNECTED;
 	si->roam_kick = current_time;
 }
 

usteer.h

@@ -54,6 +54,12 @@ enum usteer_node_type {
 	NODE_TYPE_REMOTE,
 };
 
+enum usteer_sta_connection_state {
+	STA_NOT_CONNECTED = 0,
+	STA_CONNECTED = 1,
+	STA_DISCONNECTED = 2,
+};
+
 struct sta_info;
 struct usteer_local_node;
 struct usteer_remote_host;