device_info.cc revision 1ff67a70eb6dea94ba8a6a836add9810536bec31
1fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu// Copyright 2014 The Chromium OS Authors. All rights reserved. 2fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu// Use of this source code is governed by a BSD-style license that can be 3fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu// found in the LICENSE file. 4fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 5fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include "apmanager/device_info.h" 6fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 7fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <linux/rtnetlink.h> 8fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 9fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <string> 10fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 11fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <base/bind.h> 12fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <base/files/file_util.h> 13fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <base/logging.h> 14fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <shill/net/netlink_attribute.h> 15fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <shill/net/netlink_manager.h> 16fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <shill/net/nl80211_message.h> 17fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <shill/net/rtnl_handler.h> 18fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <shill/net/rtnl_listener.h> 19fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <shill/net/rtnl_message.h> 20fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include <shill/net/sockets.h> 21fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 22fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu#include "apmanager/manager.h" 23fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 24fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuusing base::Bind; 25fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuusing shill::ByteString; 26fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuusing shill::NetlinkManager; 27fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuusing shill::NetlinkMessage; 28fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuusing shill::Nl80211Message; 29fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuusing shill::RTNLHandler; 30fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuusing shill::RTNLMessage; 31fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuusing shill::RTNLListener; 32fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuusing std::map; 33fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuusing std::string; 34fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 35fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiunamespace apmanager { 36fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 37fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuconst char DeviceInfo::kDeviceInfoRoot[] = "/sys/class/net"; 38fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuconst char DeviceInfo::kInterfaceUevent[] = "uevent"; 39fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuconst char DeviceInfo::kInterfaceUeventWifiSignature[] = "DEVTYPE=wlan\n"; 40fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 41fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter QiuDeviceInfo::DeviceInfo(Manager* manager) 42fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu : link_callback_(Bind(&DeviceInfo::LinkMsgHandler, Unretained(this))), 43fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu device_info_root_(kDeviceInfoRoot), 44fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu manager_(manager), 45fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu netlink_manager_(NetlinkManager::GetInstance()), 46fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu rtnl_handler_(RTNLHandler::GetInstance()), 47fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu sockets_(new shill::Sockets()) { 48fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 49fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 50fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter QiuDeviceInfo::~DeviceInfo() {} 51fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 52fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::Start() { 53fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Start netlink manager. 54fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu netlink_manager_->Init(); 55fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu uint16_t nl80211_family_id = netlink_manager_->GetFamily( 56fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Nl80211Message::kMessageTypeString, 57fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Bind(&Nl80211Message::CreateMessage)); 58fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (nl80211_family_id == NetlinkMessage::kIllegalMessageType) { 59fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(FATAL) << "Didn't get a legal message type for 'nl80211' messages."; 60fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 61fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Nl80211Message::SetMessageType(nl80211_family_id); 62fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu netlink_manager_->Start(); 63fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 64fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Start enumerating WiFi devices (PHYs). 65fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu EnumerateDevices(); 66fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 67fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Start RTNL for monitoring network interfaces. 68fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu rtnl_handler_->Start(sockets_.get()); 69fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu link_listener_.reset( 70fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu new RTNLListener(RTNLHandler::kRequestLink, link_callback_)); 711ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu // Request link infos. 721ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu rtnl_handler_->RequestDump(RTNLHandler::kRequestLink); 73fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 74fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 75fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::Stop() { 76fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu link_listener_.reset(); 77fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 78fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 79fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::EnumerateDevices() { 80fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu shill::GetWiphyMessage get_wiphy; 81fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu get_wiphy.attributes()->SetFlagAttributeValue(NL80211_ATTR_SPLIT_WIPHY_DUMP, 82fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu true); 83fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu get_wiphy.AddFlag(NLM_F_DUMP); 84fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu netlink_manager_->SendNl80211Message( 85fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu &get_wiphy, 86fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Bind(&DeviceInfo::OnWiFiPhyInfoReceived, AsWeakPtr()), 87fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Bind(&NetlinkManager::OnAckDoNothing), 88fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Bind(&NetlinkManager::OnNetlinkMessageError)); 89fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 90fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 91fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::OnWiFiPhyInfoReceived(const shill::Nl80211Message& msg) { 92fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Verify NL80211_CMD_NEW_WIPHY. 93fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (msg.command() != shill::NewWiphyMessage::kCommand) { 94fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(ERROR) << "Received unexpected command:" 95fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu << msg.command(); 96fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 97fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 98fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 991ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu string device_name; 1001ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu if (!msg.const_attributes()->GetStringAttributeValue(NL80211_ATTR_WIPHY_NAME, 1011ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu &device_name)) { 1021ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu LOG(ERROR) << "NL80211_CMD_NEW_WIPHY had no NL80211_ATTR_WIPHY_NAME"; 1031ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu return; 1041ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu } 1051ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu 1061ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu if (GetDevice(device_name)) { 1071ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu LOG(INFO) << "Device " << device_name << " already enumerated."; 1081ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu return; 1091ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu } 1101ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu 1111ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu scoped_refptr<Device> device = new Device(device_name); 1121ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu device->ParseWiphyCapability(msg); 113fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 114fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Register device 115fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu RegisterDevice(device); 116fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 117fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 118fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::LinkMsgHandler(const RTNLMessage& msg) { 119fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu DCHECK(msg.type() == RTNLMessage::kTypeLink); 120fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 121fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Get interface name. 122fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (!msg.HasAttribute(IFLA_IFNAME)) { 123fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(ERROR) << "Link event message does not have IFLA_IFNAME!"; 124fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 125fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 126fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu ByteString b(msg.GetAttribute(IFLA_IFNAME)); 127fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu string iface_name(reinterpret_cast<const char*>(b.GetConstData())); 128fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 129fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu int dev_index = msg.interface_index(); 130fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (msg.mode() == RTNLMessage::kModeAdd) { 131fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu AddLinkMsgHandler(iface_name, dev_index); 132fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } else if (msg.mode() == RTNLMessage::kModeDelete) { 133fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu DelLinkMsgHandler(iface_name, dev_index); 134fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } else { 135fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu NOTREACHED(); 136fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 137fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 138fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 139fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::AddLinkMsgHandler(const string& iface_name, int iface_index) { 140fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Ignore non-wifi interfaces. 141fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (!IsWifiInterface(iface_name)) { 142fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(INFO) << "Ignore link event for non-wifi interface: " << iface_name; 143fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 144fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 145fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 146fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Return if interface already existed. Could receive multiple add link event 147fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // for a single interface. 148fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (interface_infos_.find(iface_index) != interface_infos_.end()) { 149fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(INFO) << "AddLinkMsgHandler: interface " << iface_name 150fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu << " is already added"; 151fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 152fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 153fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 154fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Add interface. 155fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Device::WiFiInterface wifi_interface; 156fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu wifi_interface.iface_name = iface_name; 157fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu wifi_interface.iface_index = iface_index; 158fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu interface_infos_[iface_index] = wifi_interface; 159fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 160fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Get interface info. 161fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu GetWiFiInterfaceInfo(iface_index); 162fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 163fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 164fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::DelLinkMsgHandler(const string& iface_name, int iface_index) { 165fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(INFO) << "DelLinkMsgHandler iface_name: " << iface_name 166fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu << "iface_index: " << iface_index; 167fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu map<uint32_t, Device::WiFiInterface>::iterator iter = 168fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu interface_infos_.find(iface_index); 169fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (iter != interface_infos_.end()) { 170fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Deregister interface from the Device. 171fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu scoped_refptr<Device> device = GetDevice(iter->second.device_name); 172fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (device) { 173fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu device->DeregisterInterface(iter->second); 174fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 175fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu interface_infos_.erase(iter); 176fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 177fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 178fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 179fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiubool DeviceInfo::IsWifiInterface(const string& iface_name) { 180fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu string contents; 181fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (!GetDeviceInfoContents(iface_name, kInterfaceUevent, &contents)) { 182fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(INFO) << "Interface " << iface_name << " has no uevent file"; 183fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return false; 184fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 185fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 186fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (contents.find(kInterfaceUeventWifiSignature) == string::npos) { 187fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(INFO) << "Interface " << iface_name << " is not a WiFi interface"; 188fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return false; 189fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 190fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 191fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return true; 192fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 193fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 194fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiubool DeviceInfo::GetDeviceInfoContents(const string& iface_name, 195fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu const string& path_name, 196fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu string* contents_out) { 197fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return base::ReadFileToString( 198fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu device_info_root_.Append(iface_name).Append(path_name), 199fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu contents_out); 200fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 201fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 202fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::GetWiFiInterfaceInfo(int interface_index) { 203fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu shill::GetInterfaceMessage msg; 204fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (!msg.attributes()->SetU32AttributeValue(NL80211_ATTR_IFINDEX, 205fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu interface_index)) { 206fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(ERROR) << "Unable to set interface index attribute for " 207fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu "GetInterface message. Interface type cannot be " 208fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu "determined!"; 209fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 210fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 211fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 212fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu netlink_manager_->SendNl80211Message( 213fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu &msg, 214fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Bind(&DeviceInfo::OnWiFiInterfaceInfoReceived, AsWeakPtr()), 215fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Bind(&NetlinkManager::OnAckDoNothing), 216fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Bind(&NetlinkManager::OnNetlinkMessageError)); 217fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 218fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 219fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::OnWiFiInterfaceInfoReceived(const shill::Nl80211Message& msg) { 220fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (msg.command() != NL80211_CMD_NEW_INTERFACE) { 221fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(ERROR) << "Message is not a new interface response"; 222fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 223fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 224fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 225fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu uint32_t interface_index; 226fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (!msg.const_attributes()->GetU32AttributeValue(NL80211_ATTR_IFINDEX, 227fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu &interface_index)) { 228fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(ERROR) << "Message contains no interface index"; 229fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 230fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 231fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu uint32_t interface_type; 232fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (!msg.const_attributes()->GetU32AttributeValue(NL80211_ATTR_IFTYPE, 233fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu &interface_type)) { 234fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(ERROR) << "Message contains no interface type"; 235fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 236fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 237fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 238fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu map<uint32_t, Device::WiFiInterface>::iterator iter = 239fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu interface_infos_.find(interface_index); 240fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (iter == interface_infos_.end()) { 241fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(ERROR) << "Receive WiFi interface info for non-exist interface: " 242fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu << interface_index; 243fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 244fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 245fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu iter->second.iface_type = interface_type; 246fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 247fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Request PHY info, to know which Device to register this interface to. 248fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu GetWiFiInterfacePhyInfo(interface_index); 249fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 250fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 251fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::GetWiFiInterfacePhyInfo(uint32_t iface_index) { 252fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu shill::GetWiphyMessage get_wiphy; 253fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu get_wiphy.attributes()->SetU32AttributeValue(NL80211_ATTR_IFINDEX, 254fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu iface_index); 255fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu netlink_manager_->SendNl80211Message( 256fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu &get_wiphy, 257fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Bind(&DeviceInfo::OnWiFiInterfacePhyInfoReceived, 258fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu AsWeakPtr(), 259fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu iface_index), 260fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Bind(&NetlinkManager::OnAckDoNothing), 261fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu Bind(&NetlinkManager::OnNetlinkMessageError)); 262fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 263fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 264fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::OnWiFiInterfacePhyInfoReceived( 265fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu uint32_t iface_index, const shill::Nl80211Message& msg) { 266fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Verify NL80211_CMD_NEW_WIPHY. 267fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (msg.command() != shill::NewWiphyMessage::kCommand) { 268fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(ERROR) << "Received unexpected command:" 269fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu << msg.command(); 270fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 271fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 272fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 273fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu map<uint32_t, Device::WiFiInterface>::iterator iter = 274fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu interface_infos_.find(iface_index); 275fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (iter == interface_infos_.end()) { 276fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Interface is gone by the time we received its PHY info. 277fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(ERROR) << "Interface [" << iface_index 278fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu << "] is deleted when PHY info is received"; 279fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 280fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 281fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 282fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu string device_name; 283fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (!msg.const_attributes()->GetStringAttributeValue(NL80211_ATTR_WIPHY_NAME, 284fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu &device_name)) { 285fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu LOG(ERROR) << "NL80211_CMD_NEW_WIPHY had no NL80211_ATTR_WIPHY_NAME"; 286fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 287fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 288fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 289fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu scoped_refptr<Device> device = GetDevice(device_name); 2901ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu // Create device if it is not enumerated yet. 291fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (!device) { 2921ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu device = new Device(device_name); 2931ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu device->ParseWiphyCapability(msg); 2941ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu 2951ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu // Register device 2961ff67a70eb6dea94ba8a6a836add9810536bec31Peter Qiu RegisterDevice(device); 297fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 298fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu iter->second.device_name = device_name; 299fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 300fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu device->RegisterInterface(iter->second); 301fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 302fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 303fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuvoid DeviceInfo::RegisterDevice(scoped_refptr<Device> device) { 304fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (!device) { 305fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return; 306fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 307fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu devices_[device->GetDeviceName()] = device; 308fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu // Register device with manager. 309fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu manager_->RegisterDevice(device); 310fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 311fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 312fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiuscoped_refptr<Device> DeviceInfo::GetDevice(const string& device_name) { 313fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu map<string, scoped_refptr<Device>>::iterator iter = 314fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu devices_.find(device_name); 315fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu if (iter == devices_.end()) { 316fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return nullptr; 317fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu } 318fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu return iter->second; 319fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} 320fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu 321fb39ba4b2ef92f0c9d19f6910a350cd8a14405a0Peter Qiu} // namespace apmanager 322