Method GateHookCommand

core/bessctl.cc:1576–1611

  }

  Status GateHookCommand(ServerContext*, const GateHookCommandRequest* request,
                         CommandResponse* response) override {
    std::lock_guard<std::recursive_mutex> lock(mutex_);

    // No need to look up the hook builder: the gate either
    // has a hook instance with the right name, or doesn't.
    const bess::pb::GateHookInfo& rh = request->hook();
    const auto& it = ModuleGraph::GetAllModules().find(rh.module_name());
    if (it == ModuleGraph::GetAllModules().end()) {
      return return_with_error(response, ENOENT, "No module '%s' found",
                               rh.module_name().c_str());
    }
    Module* m = it->second;
    bool is_igate = rh.gate_case() == bess::pb::GateHookInfo::kIgate;
    gate_idx_t gate_idx = is_igate ? rh.igate() : rh.ogate();
    bess::Gate* g = module_gate(m, is_igate, gate_idx);
    if (g == nullptr) {
      return return_with_error(
          response, EINVAL, "%s: %cgate '%hu' does not exist",
          m->name().c_str(), is_igate ? 'i' : 'o', gate_idx);
    }

    bess::GateHook* hook = g->FindHook(rh.hook_name());
    if (hook == nullptr) {
      return return_with_error(response, ENOENT,
                               "%s: %cgate '%hu' has no hook named '%s'",
                               m->name().c_str(), is_igate ? 'i' : 'o',
                               gate_idx, rh.hook_name().c_str());
    }

    // DPDK functions may be called, so be prepared
    current_worker.SetNonWorker();

    *response = hook->RunCommand(request->cmd(), rh.arg());
    return Status::OK;
  }

  Status ConfigureResumeHook(ServerContext*,
                             const ConfigureResumeHookRequest* request,