From aaa2a1384967397c0749a076f746b634ae3659a2 Mon Sep 17 00:00:00 2001
From: Evgeny <me@jeka.su>
Date: Thu, 9 Apr 2026 21:00:32 +0300
Subject: [PATCH] add smart reload logs/config

---
 src/utun_instance.c | 34 ++++++++++++++++++++--------------
 1 file changed, 20 insertions(+), 14 deletions(-)

diff --git a/src/utun_instance.c b/src/utun_instance.c
index 81769dc..66a4c28 100644
--- a/src/utun_instance.c
+++ b/src/utun_instance.c
@@ -25,7 +25,6 @@
 
 // Forward declarations
 static uint32_t get_dest_ip(const uint8_t *packet, size_t len);
-static int local_sockaddr_equal(const struct sockaddr_storage *a, const struct sockaddr_storage *b);
 
 // Global instance for signal handlers
 static struct UTUN_INSTANCE *g_instance = NULL;
@@ -459,16 +458,6 @@ void utun_instance_diagnose_leaks(struct UTUN_INSTANCE *instance, const char *ph
                report.etcp_connections_count);
 }
 
-static int local_local_sockaddr_equal(const struct sockaddr_storage *a, const struct sockaddr_storage *b) {
-    if (!a || !b || a->ss_family != b->ss_family) return 0;
-    if (a->ss_family == AF_INET) {
-        const struct sockaddr_in *ia = (const struct sockaddr_in *)a;
-        const struct sockaddr_in *ib = (const struct sockaddr_in *)b;
-        return ia->sin_addr.s_addr == ib->sin_addr.s_addr && ia->sin_port == ib->sin_port;
-    }
-    return 0;  // IPv6 stub
-}
-
 /* Variant B: selective reload. Compares settings for [server:], [client:], link=. Unchanged untouched (no close, no timers, no queues). Changed/deleted: target only that object. New: add. Routing/fw always. BGP self-restarts. */
 struct UTUN_INSTANCE *utun_instance_reload(struct UTUN_INSTANCE *instance, struct UASYNC *ua, const char *config_file) {
     if (!instance || !ua || !config_file) {
@@ -482,6 +471,23 @@ struct UTUN_INSTANCE *utun_instance_reload(struct UTUN_INSTANCE *instance, struc
         DEBUG_ERROR(DEBUG_CATEGORY_CONFIG, "Failed to parse new config");
         return instance;
     }
+
+    // Reset + apply debug categories from [debug] section (always, for partial and full paths).
+    // Mirrors utun_instance_create exactly. Reset ensures removed categories fall back to global.
+    for (int i = 0; i < DEBUG_CATEGORY_COUNT; i++) {
+        g_debug_config.category_levels[i] = DEBUG_LEVEL_NONE;
+    }
+    if (new_config->global.debug_level[0]) {
+        debug_apply_global_level(new_config->global.debug_level);
+    }
+    for (int i = 0; i < new_config->global.debug_levels.count; i++) {
+        debug_apply_category_config(
+            new_config->global.debug_levels.category[i],
+            new_config->global.debug_levels.level[i]
+        );
+    }
+    DEBUG_INFO(DEBUG_CATEGORY_CONFIG, "Applied [debug] section (%d categories)", new_config->global.debug_levels.count);
+
     int needs_full = 0;
     if (strcmp(instance->config->global.my_public_key_hex, new_config->global.my_public_key_hex) != 0 ||
         strcmp(instance->config->global.my_private_key_hex, new_config->global.my_private_key_hex) != 0 ||
@@ -596,10 +602,10 @@ struct UTUN_INSTANCE *utun_instance_reload(struct UTUN_INSTANCE *instance, struc
     fw_free(&instance->fw);
     fw_init(&instance->fw);
     fw_load_rules(&instance->fw, &new_config->global);
-    routing_destroy(instance);
-    routing_create(instance);
+    // routing_destroy(instance);  // commented per request - BGP self-restarts on conn events
+    // routing_create(instance);   // commented per request
     if (instance->config) free_config(instance->config);
     instance->config = new_config;
-    DEBUG_INFO(DEBUG_CATEGORY_CONFIG, "Selective partial reload completed (only changed updated, unchanged untouched)");
+    DEBUG_INFO(DEBUG_CATEGORY_CONFIG, "Selective partial reload completed (only changed updated, unchanged untouched, [debug] applied)");
     return instance;
 }