Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.connectivity.tethering; |
| 18 | |
Erik Kline | 1185459 | 2017-06-15 18:06:34 +0900 | [diff] [blame] | 19 | import static com.android.internal.util.BitUtils.uint16; |
| 20 | |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 21 | import android.hardware.tetheroffload.control.V1_0.IOffloadControl; |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 22 | import android.hardware.tetheroffload.control.V1_0.ITetheringOffloadCallback; |
| 23 | import android.hardware.tetheroffload.control.V1_0.NatTimeoutUpdate; |
Erik Kline | a088500 | 2017-07-12 00:15:26 +0900 | [diff] [blame] | 24 | import android.hardware.tetheroffload.control.V1_0.OffloadCallbackEvent; |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 25 | import android.os.Handler; |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 26 | import android.os.RemoteException; |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 27 | import android.net.util.SharedLog; |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 28 | |
Erik Kline | 7990aef | 2017-06-01 20:11:25 +0900 | [diff] [blame] | 29 | import java.util.ArrayList; |
| 30 | |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 31 | |
| 32 | /** |
| 33 | * Capture tethering dependencies, for injection. |
| 34 | * |
| 35 | * @hide |
| 36 | */ |
| 37 | public class OffloadHardwareInterface { |
| 38 | private static final String TAG = OffloadHardwareInterface.class.getSimpleName(); |
Erik Kline | 9a5b02a | 2017-07-12 15:46:54 +0900 | [diff] [blame] | 39 | private static final String YIELDS = " -> "; |
Erik Kline | c87cd41 | 2017-07-07 17:38:30 +0900 | [diff] [blame] | 40 | // Change this value to control whether tether offload is enabled or |
| 41 | // disabled by default in the absence of an explicit Settings value. |
| 42 | // See accompanying unittest to distinguish 0 from non-0 values. |
Erik Kline | d091891 | 2017-07-25 12:18:56 +0900 | [diff] [blame] | 43 | private static final int DEFAULT_TETHER_OFFLOAD_DISABLED = 1; |
Erik Kline | 1185459 | 2017-06-15 18:06:34 +0900 | [diff] [blame] | 44 | private static final String NO_INTERFACE_NAME = ""; |
| 45 | private static final String NO_IPV4_ADDRESS = ""; |
| 46 | private static final String NO_IPV4_GATEWAY = ""; |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 47 | |
| 48 | private static native boolean configOffload(); |
| 49 | |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 50 | private final Handler mHandler; |
| 51 | private final SharedLog mLog; |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 52 | private IOffloadControl mOffloadControl; |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 53 | private TetheringOffloadCallback mTetheringOffloadCallback; |
| 54 | private ControlCallback mControlCallback; |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 55 | |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 56 | public static class ControlCallback { |
Erik Kline | a088500 | 2017-07-12 00:15:26 +0900 | [diff] [blame] | 57 | public void onStarted() {} |
| 58 | public void onStoppedError() {} |
| 59 | public void onStoppedUnsupported() {} |
| 60 | public void onSupportAvailable() {} |
| 61 | public void onStoppedLimitReached() {} |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 62 | |
| 63 | public void onNatTimeoutUpdate(int proto, |
| 64 | String srcAddr, int srcPort, |
| 65 | String dstAddr, int dstPort) {} |
| 66 | } |
| 67 | |
Erik Kline | 9a5b02a | 2017-07-12 15:46:54 +0900 | [diff] [blame] | 68 | public static class ForwardedStats { |
| 69 | public long rxBytes; |
| 70 | public long txBytes; |
| 71 | |
| 72 | public ForwardedStats() { |
| 73 | rxBytes = 0; |
| 74 | txBytes = 0; |
| 75 | } |
| 76 | |
| 77 | public void add(ForwardedStats other) { |
| 78 | rxBytes += other.rxBytes; |
| 79 | txBytes += other.txBytes; |
| 80 | } |
| 81 | |
| 82 | public String toString() { |
| 83 | return String.format("rx:%s tx:%s", rxBytes, txBytes); |
| 84 | } |
| 85 | } |
| 86 | |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 87 | public OffloadHardwareInterface(Handler h, SharedLog log) { |
| 88 | mHandler = h; |
| 89 | mLog = log.forSubComponent(TAG); |
| 90 | } |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 91 | |
Erik Kline | c87cd41 | 2017-07-07 17:38:30 +0900 | [diff] [blame] | 92 | public int getDefaultTetherOffloadDisabled() { |
| 93 | return DEFAULT_TETHER_OFFLOAD_DISABLED; |
| 94 | } |
| 95 | |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 96 | public boolean initOffloadConfig() { |
| 97 | return configOffload(); |
| 98 | } |
| 99 | |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 100 | public boolean initOffloadControl(ControlCallback controlCb) { |
| 101 | mControlCallback = controlCb; |
| 102 | |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 103 | if (mOffloadControl == null) { |
| 104 | try { |
| 105 | mOffloadControl = IOffloadControl.getService(); |
| 106 | } catch (RemoteException e) { |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 107 | mLog.e("tethering offload control not supported: " + e); |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 108 | return false; |
| 109 | } |
| 110 | } |
| 111 | |
Erik Kline | 248e736 | 2017-07-04 13:39:48 +0900 | [diff] [blame] | 112 | final String logmsg = String.format("initOffloadControl(%s)", |
| 113 | (controlCb == null) ? "null" |
| 114 | : "0x" + Integer.toHexString(System.identityHashCode(controlCb))); |
| 115 | |
Erik Kline | a088500 | 2017-07-12 00:15:26 +0900 | [diff] [blame] | 116 | mTetheringOffloadCallback = new TetheringOffloadCallback(mHandler, mControlCallback, mLog); |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 117 | final CbResults results = new CbResults(); |
| 118 | try { |
| 119 | mOffloadControl.initOffload( |
| 120 | mTetheringOffloadCallback, |
| 121 | (boolean success, String errMsg) -> { |
| 122 | results.success = success; |
| 123 | results.errMsg = errMsg; |
| 124 | }); |
| 125 | } catch (RemoteException e) { |
Erik Kline | 248e736 | 2017-07-04 13:39:48 +0900 | [diff] [blame] | 126 | record(logmsg, e); |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 127 | return false; |
| 128 | } |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 129 | |
Erik Kline | 248e736 | 2017-07-04 13:39:48 +0900 | [diff] [blame] | 130 | record(logmsg, results); |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 131 | return results.success; |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | public void stopOffloadControl() { |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 135 | if (mOffloadControl != null) { |
| 136 | try { |
| 137 | mOffloadControl.stopOffload( |
| 138 | (boolean success, String errMsg) -> { |
| 139 | if (!success) mLog.e("stopOffload failed: " + errMsg); |
| 140 | }); |
| 141 | } catch (RemoteException e) { |
| 142 | mLog.e("failed to stopOffload: " + e); |
| 143 | } |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 144 | } |
| 145 | mOffloadControl = null; |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 146 | mTetheringOffloadCallback = null; |
| 147 | mControlCallback = null; |
Erik Kline | 248e736 | 2017-07-04 13:39:48 +0900 | [diff] [blame] | 148 | mLog.log("stopOffloadControl()"); |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 149 | } |
| 150 | |
Erik Kline | 9a5b02a | 2017-07-12 15:46:54 +0900 | [diff] [blame] | 151 | public ForwardedStats getForwardedStats(String upstream) { |
| 152 | final String logmsg = String.format("getForwardedStats(%s)", upstream); |
| 153 | |
| 154 | final ForwardedStats stats = new ForwardedStats(); |
| 155 | try { |
| 156 | mOffloadControl.getForwardedStats( |
| 157 | upstream, |
| 158 | (long rxBytes, long txBytes) -> { |
| 159 | stats.rxBytes = (rxBytes > 0) ? rxBytes : 0; |
| 160 | stats.txBytes = (txBytes > 0) ? txBytes : 0; |
| 161 | }); |
| 162 | } catch (RemoteException e) { |
| 163 | record(logmsg, e); |
| 164 | return stats; |
| 165 | } |
| 166 | |
| 167 | mLog.log(logmsg + YIELDS + stats); |
| 168 | return stats; |
| 169 | } |
| 170 | |
Erik Kline | 32179ff | 2017-07-04 18:28:11 +0900 | [diff] [blame] | 171 | public boolean setLocalPrefixes(ArrayList<String> localPrefixes) { |
| 172 | final String logmsg = String.format("setLocalPrefixes([%s])", |
| 173 | String.join(",", localPrefixes)); |
| 174 | |
| 175 | final CbResults results = new CbResults(); |
| 176 | try { |
| 177 | mOffloadControl.setLocalPrefixes(localPrefixes, |
| 178 | (boolean success, String errMsg) -> { |
| 179 | results.success = success; |
| 180 | results.errMsg = errMsg; |
| 181 | }); |
| 182 | } catch (RemoteException e) { |
| 183 | record(logmsg, e); |
| 184 | return false; |
| 185 | } |
| 186 | |
| 187 | record(logmsg, results); |
| 188 | return results.success; |
| 189 | } |
| 190 | |
Erik Kline | 7990aef | 2017-06-01 20:11:25 +0900 | [diff] [blame] | 191 | public boolean setUpstreamParameters( |
| 192 | String iface, String v4addr, String v4gateway, ArrayList<String> v6gws) { |
Erik Kline | 248e736 | 2017-07-04 13:39:48 +0900 | [diff] [blame] | 193 | iface = (iface != null) ? iface : NO_INTERFACE_NAME; |
| 194 | v4addr = (v4addr != null) ? v4addr : NO_IPV4_ADDRESS; |
| 195 | v4gateway = (v4gateway != null) ? v4gateway : NO_IPV4_GATEWAY; |
| 196 | v6gws = (v6gws != null) ? v6gws : new ArrayList<>(); |
| 197 | |
| 198 | final String logmsg = String.format("setUpstreamParameters(%s, %s, %s, [%s])", |
| 199 | iface, v4addr, v4gateway, String.join(",", v6gws)); |
Erik Kline | 1185459 | 2017-06-15 18:06:34 +0900 | [diff] [blame] | 200 | |
Erik Kline | 7990aef | 2017-06-01 20:11:25 +0900 | [diff] [blame] | 201 | final CbResults results = new CbResults(); |
| 202 | try { |
| 203 | mOffloadControl.setUpstreamParameters( |
| 204 | iface, v4addr, v4gateway, v6gws, |
| 205 | (boolean success, String errMsg) -> { |
| 206 | results.success = success; |
| 207 | results.errMsg = errMsg; |
| 208 | }); |
| 209 | } catch (RemoteException e) { |
Erik Kline | 248e736 | 2017-07-04 13:39:48 +0900 | [diff] [blame] | 210 | record(logmsg, e); |
Erik Kline | 7990aef | 2017-06-01 20:11:25 +0900 | [diff] [blame] | 211 | return false; |
| 212 | } |
| 213 | |
Erik Kline | 248e736 | 2017-07-04 13:39:48 +0900 | [diff] [blame] | 214 | record(logmsg, results); |
Erik Kline | 7990aef | 2017-06-01 20:11:25 +0900 | [diff] [blame] | 215 | return results.success; |
| 216 | } |
| 217 | |
Erik Kline | 248e736 | 2017-07-04 13:39:48 +0900 | [diff] [blame] | 218 | private void record(String msg, Throwable t) { |
Erik Kline | 9a5b02a | 2017-07-12 15:46:54 +0900 | [diff] [blame] | 219 | mLog.e(msg + YIELDS + "exception: " + t); |
Erik Kline | 248e736 | 2017-07-04 13:39:48 +0900 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | private void record(String msg, CbResults results) { |
Erik Kline | 9a5b02a | 2017-07-12 15:46:54 +0900 | [diff] [blame] | 223 | final String logmsg = msg + YIELDS + results; |
Erik Kline | 248e736 | 2017-07-04 13:39:48 +0900 | [diff] [blame] | 224 | if (!results.success) { |
| 225 | mLog.e(logmsg); |
| 226 | } else { |
| 227 | mLog.log(logmsg); |
| 228 | } |
| 229 | } |
| 230 | |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 231 | private static class TetheringOffloadCallback extends ITetheringOffloadCallback.Stub { |
| 232 | public final Handler handler; |
| 233 | public final ControlCallback controlCb; |
Erik Kline | a088500 | 2017-07-12 00:15:26 +0900 | [diff] [blame] | 234 | public final SharedLog log; |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 235 | |
Erik Kline | a088500 | 2017-07-12 00:15:26 +0900 | [diff] [blame] | 236 | public TetheringOffloadCallback(Handler h, ControlCallback cb, SharedLog sharedLog) { |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 237 | handler = h; |
| 238 | controlCb = cb; |
Erik Kline | a088500 | 2017-07-12 00:15:26 +0900 | [diff] [blame] | 239 | log = sharedLog; |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | @Override |
| 243 | public void onEvent(int event) { |
Erik Kline | a088500 | 2017-07-12 00:15:26 +0900 | [diff] [blame] | 244 | handler.post(() -> { |
| 245 | switch (event) { |
| 246 | case OffloadCallbackEvent.OFFLOAD_STARTED: |
| 247 | controlCb.onStarted(); |
| 248 | break; |
| 249 | case OffloadCallbackEvent.OFFLOAD_STOPPED_ERROR: |
| 250 | controlCb.onStoppedError(); |
| 251 | break; |
| 252 | case OffloadCallbackEvent.OFFLOAD_STOPPED_UNSUPPORTED: |
| 253 | controlCb.onStoppedUnsupported(); |
| 254 | break; |
| 255 | case OffloadCallbackEvent.OFFLOAD_SUPPORT_AVAILABLE: |
| 256 | controlCb.onSupportAvailable(); |
| 257 | break; |
| 258 | case OffloadCallbackEvent.OFFLOAD_STOPPED_LIMIT_REACHED: |
| 259 | controlCb.onStoppedLimitReached(); |
| 260 | break; |
| 261 | default: |
| 262 | log.e("Unsupported OffloadCallbackEvent: " + event); |
| 263 | } |
| 264 | }); |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | @Override |
| 268 | public void updateTimeout(NatTimeoutUpdate params) { |
| 269 | handler.post(() -> { |
| 270 | controlCb.onNatTimeoutUpdate( |
| 271 | params.proto, |
Erik Kline | 1185459 | 2017-06-15 18:06:34 +0900 | [diff] [blame] | 272 | params.src.addr, uint16(params.src.port), |
| 273 | params.dst.addr, uint16(params.dst.port)); |
Erik Kline | f4b6e34 | 2017-04-25 19:19:59 +0900 | [diff] [blame] | 274 | }); |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | private static class CbResults { |
| 279 | boolean success; |
| 280 | String errMsg; |
Erik Kline | 248e736 | 2017-07-04 13:39:48 +0900 | [diff] [blame] | 281 | |
| 282 | public String toString() { |
| 283 | if (success) { |
| 284 | return "ok"; |
| 285 | } else { |
| 286 | return "fail: " + errMsg; |
| 287 | } |
| 288 | } |
Erik Kline | 5a7c8a0 | 2017-04-30 19:36:15 +0900 | [diff] [blame] | 289 | } |
| 290 | } |