| // Copyright 2016 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "arc/network/manager.h" |
| |
| #include <arpa/inet.h> |
| #include <net/if.h> |
| #include <netinet/in.h> |
| #include <stdint.h> |
| #include <sys/prctl.h> |
| #include <sys/socket.h> |
| #include <sys/un.h> |
| |
| #include <utility> |
| |
| #include <base/bind.h> |
| #include <base/logging.h> |
| #include <base/message_loop/message_loop.h> |
| #include <base/strings/string_number_conversions.h> |
| #include <base/strings/string_split.h> |
| #include <base/strings/string_util.h> |
| #include <base/strings/stringprintf.h> |
| #include <brillo/key_value_store.h> |
| #include <brillo/minijail/minijail.h> |
| |
| #include "arc/network/ipc.pb.h" |
| |
| namespace arc_networkd { |
| namespace { |
| constexpr int kSubprocessRestartDelayMs = 900; |
| |
| constexpr char kNDProxyFeatureName[] = "ARC NDProxy"; |
| constexpr int kNDProxyMinAndroidSdkVersion = 28; // P |
| constexpr int kNDProxyMinChromeMilestone = 80; |
| |
| // Passes |method_call| to |handler| and passes the response to |
| // |response_sender|. If |handler| returns nullptr, an empty response is |
| // created and sent. |
| void HandleSynchronousDBusMethodCall( |
| base::Callback<std::unique_ptr<dbus::Response>(dbus::MethodCall*)> handler, |
| dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| std::unique_ptr<dbus::Response> response = handler.Run(method_call); |
| if (!response) |
| response = dbus::Response::FromMethodCall(method_call); |
| response_sender.Run(std::move(response)); |
| } |
| |
| } // namespace |
| |
| Manager::Manager(std::unique_ptr<HelperProcess> adb_proxy, |
| std::unique_ptr<HelperProcess> mcast_proxy, |
| std::unique_ptr<HelperProcess> nd_proxy) |
| : adb_proxy_(std::move(adb_proxy)), |
| mcast_proxy_(std::move(mcast_proxy)), |
| nd_proxy_(std::move(nd_proxy)), |
| addr_mgr_({ |
| AddressManager::Guest::ARC, |
| AddressManager::Guest::ARC_NET, |
| AddressManager::Guest::CONTAINER, |
| AddressManager::Guest::VM_ARC, |
| AddressManager::Guest::VM_TERMINA, |
| AddressManager::Guest::VM_PLUGIN, |
| }) { |
| runner_ = std::make_unique<MinijailedProcessRunner>(); |
| datapath_ = std::make_unique<Datapath>(runner_.get()); |
| } |
| |
| Manager::~Manager() { |
| OnShutdown(nullptr); |
| } |
| |
| std::map<const std::string, bool> Manager::cached_feature_enabled_ = {}; |
| |
| bool Manager::ShouldEnableFeature( |
| int min_android_sdk_version, |
| int min_chrome_milestone, |
| const std::vector<std::string>& supported_boards, |
| const std::string& feature_name) { |
| static const char kLsbReleasePath[] = "/etc/lsb-release"; |
| |
| const auto& cached_result = cached_feature_enabled_.find(feature_name); |
| if (cached_result != cached_feature_enabled_.end()) |
| return cached_result->second; |
| |
| auto check = [min_android_sdk_version, min_chrome_milestone, |
| &supported_boards, &feature_name]() { |
| brillo::KeyValueStore store; |
| if (!store.Load(base::FilePath(kLsbReleasePath))) { |
| LOG(ERROR) << "Could not read lsb-release"; |
| return false; |
| } |
| |
| std::string value; |
| if (!store.GetString("CHROMEOS_ARC_ANDROID_SDK_VERSION", &value)) { |
| LOG(ERROR) << feature_name |
| << " disabled - cannot determine Android SDK version"; |
| return false; |
| } |
| int ver = 0; |
| if (!base::StringToInt(value.c_str(), &ver)) { |
| LOG(ERROR) << feature_name << " disabled - invalid Android SDK version"; |
| return false; |
| } |
| if (ver < min_android_sdk_version) { |
| LOG(INFO) << feature_name << " disabled for Android SDK " << value; |
| return false; |
| } |
| |
| if (!store.GetString("CHROMEOS_RELEASE_CHROME_MILESTONE", &value)) { |
| LOG(ERROR) << feature_name |
| << " disabled - cannot determine ChromeOS milestone"; |
| return false; |
| } |
| if (!base::StringToInt(value.c_str(), &ver)) { |
| LOG(ERROR) << feature_name << " disabled - invalid ChromeOS milestone"; |
| return false; |
| } |
| if (ver < min_chrome_milestone) { |
| LOG(INFO) << feature_name << " disabled for ChromeOS milestone " << value; |
| return false; |
| } |
| |
| if (!store.GetString("CHROMEOS_RELEASE_BOARD", &value)) { |
| LOG(ERROR) << feature_name << " disabled - cannot determine board"; |
| return false; |
| } |
| if (!supported_boards.empty() && |
| std::find(supported_boards.begin(), supported_boards.end(), value) == |
| supported_boards.end()) { |
| LOG(INFO) << feature_name << " disabled for board " << value; |
| return false; |
| } |
| return true; |
| }; |
| |
| bool result = check(); |
| cached_feature_enabled_.emplace(feature_name, result); |
| return result; |
| } |
| |
| int Manager::OnInit() { |
| prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); |
| |
| // Handle subprocess lifecycle. |
| process_reaper_.Register(this); |
| |
| CHECK(process_reaper_.WatchForChild( |
| FROM_HERE, adb_proxy_->pid(), |
| base::Bind(&Manager::OnSubprocessExited, weak_factory_.GetWeakPtr(), |
| adb_proxy_->pid()))) |
| << "Failed to watch adb-proxy child process"; |
| CHECK(process_reaper_.WatchForChild( |
| FROM_HERE, mcast_proxy_->pid(), |
| base::Bind(&Manager::OnSubprocessExited, weak_factory_.GetWeakPtr(), |
| nd_proxy_->pid()))) |
| << "Failed to watch multicast-proxy child process"; |
| CHECK(process_reaper_.WatchForChild( |
| FROM_HERE, nd_proxy_->pid(), |
| base::Bind(&Manager::OnSubprocessExited, weak_factory_.GetWeakPtr(), |
| nd_proxy_->pid()))) |
| << "Failed to watch nd-proxy child process"; |
| |
| // Run after Daemon::OnInit(). |
| base::MessageLoopForIO::current()->task_runner()->PostTask( |
| FROM_HERE, |
| base::Bind(&Manager::InitialSetup, weak_factory_.GetWeakPtr())); |
| |
| return DBusDaemon::OnInit(); |
| } |
| |
| void Manager::InitialSetup() { |
| LOG(INFO) << "Setting up DBus service interface"; |
| dbus_svc_path_ = bus_->GetExportedObject( |
| dbus::ObjectPath(patchpanel::kPatchPanelServicePath)); |
| if (!dbus_svc_path_) { |
| LOG(FATAL) << "Failed to export " << patchpanel::kPatchPanelServicePath |
| << " object"; |
| } |
| |
| using ServiceMethod = |
| std::unique_ptr<dbus::Response> (Manager::*)(dbus::MethodCall*); |
| const std::map<const char*, ServiceMethod> kServiceMethods = { |
| {patchpanel::kArcStartupMethod, &Manager::OnArcStartup}, |
| {patchpanel::kArcShutdownMethod, &Manager::OnArcShutdown}, |
| {patchpanel::kArcVmStartupMethod, &Manager::OnArcVmStartup}, |
| {patchpanel::kArcVmShutdownMethod, &Manager::OnArcVmShutdown}, |
| {patchpanel::kTerminaVmStartupMethod, &Manager::OnTerminaVmStartup}, |
| {patchpanel::kTerminaVmShutdownMethod, &Manager::OnTerminaVmShutdown}, |
| {patchpanel::kPluginVmStartupMethod, &Manager::OnPluginVmStartup}, |
| {patchpanel::kPluginVmShutdownMethod, &Manager::OnPluginVmShutdown}, |
| }; |
| |
| for (const auto& kv : kServiceMethods) { |
| if (!dbus_svc_path_->ExportMethodAndBlock( |
| patchpanel::kPatchPanelInterface, kv.first, |
| base::Bind(&HandleSynchronousDBusMethodCall, |
| base::Bind(kv.second, base::Unretained(this))))) { |
| LOG(FATAL) << "Failed to export method " << kv.first; |
| } |
| } |
| |
| if (!bus_->RequestOwnershipAndBlock(patchpanel::kPatchPanelServiceName, |
| dbus::Bus::REQUIRE_PRIMARY)) { |
| LOG(FATAL) << "Failed to take ownership of " |
| << patchpanel::kPatchPanelServiceName; |
| } |
| LOG(INFO) << "DBus service interface ready"; |
| |
| auto& runner = datapath_->runner(); |
| // Limit local port range: Android owns 47104-61000. |
| // TODO(garrick): The original history behind this tweak is gone. Some |
| // investigation is needed to see if it is still applicable. |
| if (runner.sysctl_w("net.ipv4.ip_local_port_range", "32768 47103") != 0) { |
| LOG(ERROR) << "Failed to limit local port range. Some Android features or" |
| << " apps may not work correctly."; |
| } |
| // Enable IPv6 packet forarding |
| if (runner.sysctl_w("net.ipv6.conf.all.forwarding", "1") != 0) { |
| LOG(ERROR) << "Failed to update net.ipv6.conf.all.forwarding." |
| << " IPv6 functionality may be broken."; |
| } |
| // Kernel proxy_ndp is only needed for legacy IPv6 configuration |
| if (!ShouldEnableFeature(kNDProxyMinAndroidSdkVersion, |
| kNDProxyMinChromeMilestone, |
| std::vector<std::string>(), kNDProxyFeatureName) && |
| runner.sysctl_w("net.ipv6.conf.all.proxy_ndp", "1") != 0) { |
| LOG(ERROR) << "Failed to update net.ipv6.conf.all.proxy_ndp." |
| << " IPv6 functionality may be broken."; |
| } |
| |
| nd_proxy_->RegisterDeviceMessageHandler(base::Bind( |
| &Manager::OnDeviceMessageFromNDProxy, weak_factory_.GetWeakPtr())); |
| |
| shill_client_ = std::make_unique<ShillClient>(bus_); |
| auto* const forwarder = static_cast<TrafficForwarder*>(this); |
| |
| arc_svc_ = std::make_unique<ArcService>(shill_client_.get(), datapath_.get(), |
| &addr_mgr_, forwarder); |
| cros_svc_ = std::make_unique<CrostiniService>(shill_client_.get(), &addr_mgr_, |
| datapath_.get(), forwarder); |
| |
| nd_proxy_->Listen(); |
| } |
| |
| void Manager::OnShutdown(int* exit_code) { |
| LOG(INFO) << "Shutting down and cleaning up"; |
| cros_svc_.reset(); |
| arc_svc_.reset(); |
| |
| // Restore original local port range. |
| // TODO(garrick): The original history behind this tweak is gone. Some |
| // investigation is needed to see if it is still applicable. |
| if (datapath_->runner().sysctl_w("net.ipv4.ip_local_port_range", |
| "32768 61000") != 0) { |
| LOG(ERROR) << "Failed to restore local port range"; |
| } |
| } |
| |
| void Manager::OnSubprocessExited(pid_t pid, const siginfo_t&) { |
| LOG(ERROR) << "Subprocess " << pid << " exited unexpectedly -" |
| << " attempting to restart"; |
| |
| HelperProcess* proc; |
| if (pid == adb_proxy_->pid()) { |
| proc = adb_proxy_.get(); |
| } else if (pid == mcast_proxy_->pid()) { |
| proc = mcast_proxy_.get(); |
| } else if (pid == nd_proxy_->pid()) { |
| proc = nd_proxy_.get(); |
| } else { |
| LOG(DFATAL) << "Unknown child process"; |
| return; |
| } |
| |
| process_reaper_.ForgetChild(pid); |
| |
| base::MessageLoopForIO::current()->task_runner()->PostDelayedTask( |
| FROM_HERE, |
| base::Bind(&Manager::RestartSubprocess, weak_factory_.GetWeakPtr(), proc), |
| base::TimeDelta::FromMilliseconds((2 << proc->restarts()) * |
| kSubprocessRestartDelayMs)); |
| } |
| |
| void Manager::RestartSubprocess(HelperProcess* subproc) { |
| if (subproc->Restart()) { |
| DCHECK(process_reaper_.WatchForChild( |
| FROM_HERE, subproc->pid(), |
| base::Bind(&Manager::OnSubprocessExited, weak_factory_.GetWeakPtr(), |
| subproc->pid()))) |
| << "Failed to watch child process " << subproc->pid(); |
| } |
| } |
| |
| bool Manager::StartArc(pid_t pid) { |
| if (!arc_svc_->Start(pid)) |
| return false; |
| |
| GuestMessage msg; |
| msg.set_event(GuestMessage::START); |
| msg.set_type(GuestMessage::ARC); |
| msg.set_arc_pid(pid); |
| SendGuestMessage(msg); |
| |
| return true; |
| } |
| |
| void Manager::StopArc(pid_t pid) { |
| GuestMessage msg; |
| msg.set_event(GuestMessage::STOP); |
| msg.set_type(GuestMessage::ARC); |
| SendGuestMessage(msg); |
| |
| arc_svc_->Stop(pid); |
| } |
| |
| bool Manager::StartArcVm(uint32_t cid) { |
| if (!arc_svc_->Start(cid)) |
| return false; |
| |
| GuestMessage msg; |
| msg.set_event(GuestMessage::START); |
| msg.set_type(GuestMessage::ARC_VM); |
| msg.set_arcvm_vsock_cid(cid); |
| SendGuestMessage(msg); |
| |
| return true; |
| } |
| |
| void Manager::StopArcVm(uint32_t cid) { |
| GuestMessage msg; |
| msg.set_event(GuestMessage::STOP); |
| msg.set_type(GuestMessage::ARC_VM); |
| SendGuestMessage(msg); |
| |
| arc_svc_->Stop(cid); |
| } |
| |
| bool Manager::StartCrosVm(uint64_t vm_id, |
| GuestMessage::GuestType vm_type, |
| uint32_t subnet_index) { |
| DCHECK(vm_type == GuestMessage::TERMINA_VM || |
| vm_type == GuestMessage::PLUGIN_VM); |
| |
| if (!cros_svc_->Start(vm_id, vm_type == GuestMessage::TERMINA_VM, |
| subnet_index)) |
| return false; |
| |
| GuestMessage msg; |
| msg.set_event(GuestMessage::START); |
| msg.set_type(vm_type); |
| SendGuestMessage(msg); |
| |
| return true; |
| } |
| |
| void Manager::StopCrosVm(uint64_t vm_id, GuestMessage::GuestType vm_type) { |
| GuestMessage msg; |
| msg.set_event(GuestMessage::STOP); |
| msg.set_type(vm_type); |
| SendGuestMessage(msg); |
| |
| cros_svc_->Stop(vm_id, vm_type == GuestMessage::TERMINA_VM); |
| } |
| |
| std::unique_ptr<dbus::Response> Manager::OnArcStartup( |
| dbus::MethodCall* method_call) { |
| LOG(INFO) << "ARC++ starting up"; |
| |
| std::unique_ptr<dbus::Response> dbus_response( |
| dbus::Response::FromMethodCall(method_call)); |
| |
| dbus::MessageReader reader(method_call); |
| dbus::MessageWriter writer(dbus_response.get()); |
| |
| patchpanel::ArcStartupRequest request; |
| patchpanel::ArcStartupResponse response; |
| |
| if (!reader.PopArrayOfBytesAsProto(&request)) { |
| LOG(ERROR) << "Unable to parse request"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| if (!StartArc(request.pid())) |
| LOG(ERROR) << "Failed to start ARC++ network service"; |
| |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| std::unique_ptr<dbus::Response> Manager::OnArcShutdown( |
| dbus::MethodCall* method_call) { |
| LOG(INFO) << "ARC++ shutting down"; |
| |
| std::unique_ptr<dbus::Response> dbus_response( |
| dbus::Response::FromMethodCall(method_call)); |
| |
| dbus::MessageReader reader(method_call); |
| dbus::MessageWriter writer(dbus_response.get()); |
| |
| patchpanel::ArcShutdownRequest request; |
| patchpanel::ArcShutdownResponse response; |
| |
| if (!reader.PopArrayOfBytesAsProto(&request)) { |
| LOG(ERROR) << "Unable to parse request"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| StopArc(request.pid()); |
| |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| std::unique_ptr<dbus::Response> Manager::OnArcVmStartup( |
| dbus::MethodCall* method_call) { |
| LOG(INFO) << "ARCVM starting up"; |
| |
| std::unique_ptr<dbus::Response> dbus_response( |
| dbus::Response::FromMethodCall(method_call)); |
| |
| dbus::MessageReader reader(method_call); |
| dbus::MessageWriter writer(dbus_response.get()); |
| |
| patchpanel::ArcVmStartupRequest request; |
| patchpanel::ArcVmStartupResponse response; |
| |
| if (!reader.PopArrayOfBytesAsProto(&request)) { |
| LOG(ERROR) << "Unable to parse request"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| if (!StartArcVm(request.cid())) { |
| LOG(ERROR) << "Failed to start ARCVM network service"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| // Populate the response with the known devices. |
| auto build_resp = [](patchpanel::ArcVmStartupResponse* resp, Device* device) { |
| const auto& tap = device->tap_ifname(); |
| if (tap.empty()) |
| return; |
| |
| const auto& config = device->config(); |
| auto* dev = resp->add_devices(); |
| dev->set_ifname(tap); |
| dev->set_ipv4_addr(config.guest_ipv4_addr()); |
| }; |
| |
| // TODO(garrick): Update to return all devices instead once ARCVM supports |
| // multi-networking. |
| if (auto* arc = arc_svc_->ArcDevice()) |
| build_resp(&response, arc); |
| |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| std::unique_ptr<dbus::Response> Manager::OnArcVmShutdown( |
| dbus::MethodCall* method_call) { |
| LOG(INFO) << "ARCVM shutting down"; |
| |
| std::unique_ptr<dbus::Response> dbus_response( |
| dbus::Response::FromMethodCall(method_call)); |
| |
| dbus::MessageReader reader(method_call); |
| dbus::MessageWriter writer(dbus_response.get()); |
| |
| patchpanel::ArcVmShutdownRequest request; |
| patchpanel::ArcVmShutdownResponse response; |
| |
| if (!reader.PopArrayOfBytesAsProto(&request)) { |
| LOG(ERROR) << "Unable to parse request"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| StopArcVm(request.cid()); |
| |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| std::unique_ptr<dbus::Response> Manager::OnTerminaVmStartup( |
| dbus::MethodCall* method_call) { |
| LOG(INFO) << "Termina VM starting up"; |
| |
| std::unique_ptr<dbus::Response> dbus_response( |
| dbus::Response::FromMethodCall(method_call)); |
| |
| dbus::MessageReader reader(method_call); |
| dbus::MessageWriter writer(dbus_response.get()); |
| |
| patchpanel::TerminaVmStartupRequest request; |
| patchpanel::TerminaVmStartupResponse response; |
| |
| if (!reader.PopArrayOfBytesAsProto(&request)) { |
| LOG(ERROR) << "Unable to parse request"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| const int32_t cid = request.cid(); |
| if (!StartCrosVm(cid, GuestMessage::TERMINA_VM)) { |
| LOG(ERROR) << "Failed to start Termina VM network service"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| const auto* const tap = cros_svc_->TAP(cid, true /*is_termina*/); |
| if (!tap) { |
| LOG(DFATAL) << "TAP device missing"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| const auto& config = tap->config(); |
| auto* dev = response.mutable_device(); |
| dev->set_ifname(config.host_ifname()); |
| const auto* subnet = config.ipv4_subnet(); |
| if (!subnet) { |
| LOG(DFATAL) << "Missing required subnet for {cid: " << cid << "}"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| auto* resp_subnet = dev->mutable_ipv4_subnet(); |
| resp_subnet->set_base_addr(subnet->BaseAddress()); |
| resp_subnet->set_prefix_len(subnet->PrefixLength()); |
| subnet = config.lxd_ipv4_subnet(); |
| if (!subnet) { |
| LOG(DFATAL) << "Missing required lxd subnet for {cid: " << cid << "}"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| resp_subnet = response.mutable_container_subnet(); |
| resp_subnet->set_base_addr(subnet->BaseAddress()); |
| resp_subnet->set_prefix_len(subnet->PrefixLength()); |
| |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| std::unique_ptr<dbus::Response> Manager::OnTerminaVmShutdown( |
| dbus::MethodCall* method_call) { |
| LOG(INFO) << "Termina VM shutting down"; |
| |
| std::unique_ptr<dbus::Response> dbus_response( |
| dbus::Response::FromMethodCall(method_call)); |
| |
| dbus::MessageReader reader(method_call); |
| dbus::MessageWriter writer(dbus_response.get()); |
| |
| patchpanel::TerminaVmShutdownRequest request; |
| patchpanel::TerminaVmShutdownResponse response; |
| |
| if (!reader.PopArrayOfBytesAsProto(&request)) { |
| LOG(ERROR) << "Unable to parse request"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| StopCrosVm(request.cid(), GuestMessage::TERMINA_VM); |
| |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| std::unique_ptr<dbus::Response> Manager::OnPluginVmStartup( |
| dbus::MethodCall* method_call) { |
| LOG(INFO) << "Plugin VM starting up"; |
| |
| std::unique_ptr<dbus::Response> dbus_response( |
| dbus::Response::FromMethodCall(method_call)); |
| |
| dbus::MessageReader reader(method_call); |
| dbus::MessageWriter writer(dbus_response.get()); |
| |
| patchpanel::PluginVmStartupRequest request; |
| patchpanel::PluginVmStartupResponse response; |
| |
| if (!reader.PopArrayOfBytesAsProto(&request)) { |
| LOG(ERROR) << "Unable to parse request"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| const uint64_t vm_id = request.id(); |
| if (!StartCrosVm(vm_id, GuestMessage::PLUGIN_VM, request.subnet_index())) { |
| LOG(ERROR) << "Failed to start Plugin VM network service"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| const auto* const tap = cros_svc_->TAP(vm_id, false /*is_termina*/); |
| if (!tap) { |
| LOG(DFATAL) << "TAP device missing"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| const auto& config = tap->config(); |
| auto* dev = response.mutable_device(); |
| dev->set_ifname(config.host_ifname()); |
| const auto* subnet = config.ipv4_subnet(); |
| if (!subnet) { |
| LOG(DFATAL) << "Missing required subnet for {cid: " << vm_id << "}"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| auto* resp_subnet = dev->mutable_ipv4_subnet(); |
| resp_subnet->set_base_addr(subnet->BaseAddress()); |
| resp_subnet->set_prefix_len(subnet->PrefixLength()); |
| |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| std::unique_ptr<dbus::Response> Manager::OnPluginVmShutdown( |
| dbus::MethodCall* method_call) { |
| LOG(INFO) << "Plugin VM shutting down"; |
| |
| std::unique_ptr<dbus::Response> dbus_response( |
| dbus::Response::FromMethodCall(method_call)); |
| |
| dbus::MessageReader reader(method_call); |
| dbus::MessageWriter writer(dbus_response.get()); |
| |
| patchpanel::PluginVmShutdownRequest request; |
| patchpanel::PluginVmShutdownResponse response; |
| |
| if (!reader.PopArrayOfBytesAsProto(&request)) { |
| LOG(ERROR) << "Unable to parse request"; |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| StopCrosVm(request.id(), GuestMessage::PLUGIN_VM); |
| |
| writer.AppendProtoAsArrayOfBytes(response); |
| return dbus_response; |
| } |
| |
| void Manager::SendGuestMessage(const GuestMessage& msg) { |
| IpHelperMessage ipm; |
| *ipm.mutable_guest_message() = msg; |
| adb_proxy_->SendMessage(ipm); |
| mcast_proxy_->SendMessage(ipm); |
| nd_proxy_->SendMessage(ipm); |
| } |
| |
| void Manager::StartForwarding(const std::string& ifname_physical, |
| const std::string& ifname_virtual, |
| bool ipv6, |
| bool multicast) { |
| if (ifname_physical.empty() || ifname_virtual.empty()) |
| return; |
| |
| IpHelperMessage ipm; |
| DeviceMessage* msg = ipm.mutable_device_message(); |
| msg->set_dev_ifname(ifname_physical); |
| msg->set_br_ifname(ifname_virtual); |
| |
| if (ipv6) { |
| LOG(INFO) << "Starting IPv6 forwarding from " << ifname_physical << " to " |
| << ifname_virtual; |
| |
| if (!datapath_->AddIPv6Forwarding(ifname_physical, ifname_virtual)) { |
| LOG(ERROR) << "Failed to setup iptables forwarding rule for IPv6 from " |
| << ifname_physical << " to " << ifname_virtual; |
| } |
| if (!datapath_->MaskInterfaceFlags(ifname_physical, IFF_ALLMULTI)) { |
| LOG(WARNING) << "Failed to setup all multicast mode for interface " |
| << ifname_physical; |
| } |
| if (!datapath_->MaskInterfaceFlags(ifname_virtual, IFF_ALLMULTI)) { |
| LOG(WARNING) << "Failed to setup all multicast mode for interface " |
| << ifname_virtual; |
| } |
| nd_proxy_->SendMessage(ipm); |
| } |
| |
| if (multicast) { |
| LOG(INFO) << "Starting multicast forwarding from " << ifname_physical |
| << " to " << ifname_virtual; |
| mcast_proxy_->SendMessage(ipm); |
| } |
| } |
| |
| void Manager::StopForwarding(const std::string& ifname_physical, |
| const std::string& ifname_virtual, |
| bool ipv6, |
| bool multicast) { |
| if (ifname_physical.empty()) |
| return; |
| |
| IpHelperMessage ipm; |
| DeviceMessage* msg = ipm.mutable_device_message(); |
| msg->set_dev_ifname(ifname_physical); |
| msg->set_teardown(true); |
| if (!ifname_virtual.empty()) { |
| msg->set_br_ifname(ifname_virtual); |
| } |
| |
| if (ipv6) { |
| if (ifname_virtual.empty()) { |
| LOG(INFO) << "Stopping IPv6 forwarding on " << ifname_physical; |
| } else { |
| LOG(INFO) << "Stopping IPv6 forwarding from " << ifname_physical << " to " |
| << ifname_virtual; |
| datapath_->RemoveIPv6Forwarding(ifname_physical, ifname_virtual); |
| } |
| nd_proxy_->SendMessage(ipm); |
| } |
| |
| if (multicast) { |
| if (ifname_virtual.empty()) { |
| LOG(INFO) << "Stopping multicast forwarding on " << ifname_physical; |
| } else { |
| LOG(INFO) << "Stopping multicast forwarding from " << ifname_physical |
| << " to " << ifname_virtual; |
| } |
| mcast_proxy_->SendMessage(ipm); |
| } |
| } |
| |
| void Manager::OnDeviceMessageFromNDProxy(const DeviceMessage& msg) { |
| LOG_IF(DFATAL, msg.dev_ifname().empty()) |
| << "Received DeviceMessage w/ empty dev_ifname"; |
| |
| if (!datapath_->AddIPv6HostRoute(msg.dev_ifname(), msg.guest_ip6addr(), |
| 128)) { |
| LOG(WARNING) << "Failed to setup the IPv6 route for interface " |
| << msg.dev_ifname(); |
| } |
| } |
| |
| } // namespace arc_networkd |