| // |
| // Copyright (C) 2012 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| |
| #include "shill/ethernet/virtio_ethernet.h" |
| |
| #include <unistd.h> |
| |
| #include <string> |
| |
| #include "shill/control_interface.h" |
| #include "shill/event_dispatcher.h" |
| #include "shill/logging.h" |
| #include "shill/manager.h" |
| |
| using std::string; |
| |
| namespace shill { |
| |
| namespace Logging { |
| static auto kModuleLogScope = ScopeLogger::kEthernet; |
| static string ObjectID(VirtioEthernet* v) { return v->GetRpcIdentifier(); } |
| } |
| |
| VirtioEthernet::VirtioEthernet(ControlInterface* control_interface, |
| EventDispatcher* dispatcher, |
| Metrics* metrics, |
| Manager* manager, |
| const string& link_name, |
| const string& address, |
| int interface_index) |
| : Ethernet(control_interface, |
| dispatcher, |
| metrics, |
| manager, |
| link_name, |
| address, |
| interface_index) { |
| SLOG(this, 2) << "VirtioEthernet device " << link_name << " initialized."; |
| } |
| |
| VirtioEthernet::~VirtioEthernet() { |
| // Nothing to be done beyond what Ethernet dtor does. |
| } |
| |
| void VirtioEthernet::Start(Error* error, |
| const EnabledStateChangedCallback& callback) { |
| // We are sometimes instantiated (by DeviceInfo) before the Linux kernel |
| // has completed the setup function for the device (virtio_net:virtnet_probe). |
| // |
| // Furthermore, setting the IFF_UP flag on the device (as done in |
| // Ethernet::Start) may cause the kernel IPv6 code to send packets even |
| // though virtnet_probe has not completed. |
| // |
| // When that happens, the device gets stuck in a state where it cannot |
| // transmit any frames. (See crbug.com/212041) |
| // |
| // To avoid this, we sleep to let the device setup function complete. |
| SLOG(this, 2) << "Sleeping to let virtio initialize."; |
| sleep(2); |
| SLOG(this, 2) << "Starting virtio Ethernet."; |
| Ethernet::Start(error, callback); |
| } |
| |
| } // namespace shill |