nghttpx: Unload BPF program after setting up all QUIC listeners

src/shrpx.cc

@@ -3885,10 +3885,6 @@ void reload_config(WorkerProcess *wp) {
 #endif // ENABLE_HTTP3
                                                      ));
 
-#ifdef ENABLE_HTTP3
-  ipc_send(last_wp.get(), SHRPX_IPC_UNLOAD_BPF_OBJECT);
-#endif // ENABLE_HTTP3
-
   worker_process_adjust_limit();
 
   if (!get_config()->pid_file.empty()) {

src/shrpx_process.h

@@ -31,7 +31,6 @@ namespace shrpx {
 
 constexpr uint8_t SHRPX_IPC_REOPEN_LOG = 1;
 constexpr uint8_t SHRPX_IPC_GRACEFUL_SHUTDOWN = 2;
-constexpr uint8_t SHRPX_IPC_UNLOAD_BPF_OBJECT = 3;
 
 } // namespace shrpx
 

src/shrpx_worker_process.cc

@@ -175,11 +175,6 @@ void ipc_readcb(struct ev_loop *loop, ev_io *w, int revents) {
     case SHRPX_IPC_REOPEN_LOG:
       reopen_log(conn_handler);
       break;
-#if defined(ENABLE_HTTP3) && defined(HAVE_LIBBPF)
-    case SHRPX_IPC_UNLOAD_BPF_OBJECT:
-      conn_handler->unload_bpf_objects();
-      break;
-#endif // defined(ENABLE_HTTP3) && defined(HAVE_LIBBPF)
     }
   }
 }
@@ -608,6 +603,8 @@ int worker_process_event_loop(WorkerProcessConfig *wpconf) {
 #endif // !NOTHREADS
   }
 
+  conn_handler->unload_bpf_objects();
+
   drop_privileges(
 #ifdef HAVE_NEVERBLEED
       nb.get()