Refactor: Rename utun param to instance, increment connections_count

src/etcp.c

@@ -47,15 +47,15 @@ static void etcp_update_window(struct ETCP_CONN* etcp) {
 
 // Creating ETCP instance
 // после создания надо добавить peer bublic key.
-struct ETCP_CONN* etcp_connection_create(struct UTUN_INSTANCE* utun) {
-    if (!utun) return NULL;
+struct ETCP_CONN* etcp_connection_create(struct UTUN_INSTANCE* instance) {
+    if (!instance) return NULL;
     
     struct ETCP_CONN* etcp = calloc(1, sizeof(struct ETCP_CONN));
     if (!etcp) return NULL;
     
     etcp->mtu = 1500; // Default MTU
     
-    etcp->instance = utun;
+    etcp->instance = instance;
     etcp->state = 0;
 
     // Initialize crypto context
@@ -65,8 +65,8 @@ struct ETCP_CONN* etcp_connection_create(struct UTUN_INSTANCE* utun) {
     }
 
     // Initialize queues (tx_queue is input_queue)
-    etcp->input_queue = queue_new(utun->ua,NULL);
-    etcp->output_queue = queue_new(utun->ua,NULL);
+    etcp->input_queue = queue_new(instance->ua,NULL);
+    etcp->output_queue = queue_new(instance->ua,NULL);
     if (!etcp->input_queue || !etcp->output_queue) {
         if (etcp->input_queue) queue_free(etcp->input_queue);
         if (etcp->output_queue) queue_free(etcp->output_queue);
@@ -135,8 +135,10 @@ struct ETCP_CONN* etcp_connection_create(struct UTUN_INSTANCE* utun) {
     DEBUG_INFO(DEBUG_CATEGORY_ETCP, "etcp_create: created instance with node_id=%llu, mtu=%d", 
                (unsigned long long)etcp->instance->node_id, etcp->mtu);
 
-    etcp->next=utun->connections;
-    utun->connections=etcp;
+    etcp->next=instance->connections;
+    instance->connections=etcp;
+
+    instance->connections_count++;
     
     return etcp;
 }