• Android U 匹配不到APN，无法发起数据建立的问题分析

    问题

    打开数据开关后，没有data PDN请求发起，因此无法上网。

    根据日志确定是没有找到合适的data profile，原因一般有：

    1、APN 没有配置

    2、APN 类型/网络能力不满足——APN type或bearer

    3、APN 配置了但被disable了——APN proofile的carrierEnable值

    日志分析

    fail log：

    APN 被disable了，所以无法匹配。

    //preferred=true说明当前选中的是此条APN

    11-20 15:01:51.409140  2316  3480 D DPM-0   : getApnSettingForNetworkRequest: networkType=13 isMtkImsDataSupport=true hasEimsCapability=false mPreferredDataProfile=[DataProfile=[ApnSetting]....] dataProfilesCount=0 dataProfiles=[] mAllDataProfiles=[[DataProfile=[ApnSetting] INTERNET, 3080, xxxxxx, internet, , null, , null, null, 0, supl | hipri | default, IPV4V6, IP, false, 0, true, 0, 0, 0, 0, 0, gid, xxxxx000000000000, false, UNKNOWN, UNKNOWN, 0, -1, -1, false, 961, TrafficDescriptor={mDnn=internet, null}, preferred=true]...]
    11-20 15:01:51.410224  2316  3480 D DPM-0   : Can't find any data profile that can satisfy [NetworkRequest [ NONE id=0, [ Capabilities: DUN&TRUSTED&NOT_VPN&NOT_VCN_MANAGED Uid: 1001 UnderlyingNetworks: Null] ], mPriority=30, state=UNSATISFIED, mAttachedDataNetwork=null, isMetered=true, created time=15:01:51.407, evaluation result=null]
    11-20 15:01:51.411224  1366  1366 D ImsManager: [1] Registration callback removed.
    11-20 15:01:51.413463  2316  3480 D DPM-0   : Unable to find a data profile for [NetworkRequest [ NONE id=0, [ Capabilities: DUN&TRUSTED&NOT_VPN&NOT_VCN_MANAGED Uid: 1001 UnderlyingNetworks: Null] ], mPriority=30, state=UNSATISFIED, mAttachedDataNetwork=null, isMetered=true, created time=15:01:51.408, evaluation result=null]

    正常日志：

    dataProfilesCount 指明网络能力匹配的APN数

    11-20 15:19:20.723854  2316  2316 D DPM-0   : getApnSettingForNetworkRequest: networkType=13 isMtkImsDataSupport=true hasEimsCapability=false mPreferredDataProfile=[DataProfile=[ApnSetting] ....] dataProfilesCount=1 dataProfiles=[[DataProfile=[ApnSetting] 

    11-20 15:19:20.725075  2316  2316 V DPM-0   : Satisfied profile: [DataProfile=[ApnSetting]

    11-20 15:19:20.725871  2316  2316 D DPM-0   : The final available profile: [DataProfile=[ApnSetting] 

    11-20 15:19:20.729504  2316  2316 D DNC-0   : Data evaluation: evaluation reason:NEW_REQUEST, Data allowed reason: NORMAL, candidate profile=[DataProfile=[ApnSetting] 

    11-20 15:19:20.730116  2316  2316 D DNC-0   : onSetupDataNetwork: dataProfile=[DataProfile=[ApnSetting] 

    11-20 15:19:20.731688  2316  2316 D DNC-0   : Creating data network on WWAN with [DataProfile=[ApnSetting] 

    11-20 15:19:20.768286  2316  2316 D DSM-C-0 : setupDataCall

    11-20 15:19:20.769505  2316  2316 D DN-114-C: ConnectingState: setupData: accessNetwork=EUTRAN, [DataProfile=[ApnSetting] ...], isModemRoaming=false, allowRoaming=true, PDU session id=0, matchAllRuleAllowed=true
    11-20 15:19:20.776007  2316  2682 D RILJ    :

     [0868]> SETUP_DATA_CALL,reason=NORMAL,accessNetworkType=EUTRAN,dataProfile=[DataProfile=[ApnSetting] ..],isRoaming=false,allowRoaming=true,linkProperties=null,pduSessionId=0,sliceInfo=null,trafficDescriptor=TrafficDescriptor={mDnn=VZWADMIN, null},matchAllRuleAllowed=true [PHONE0]

    11-20 15:19:21.063568  2316  2674 D RILJ    : [0868]< SETUP_DATA_CALL DataCallResponse: { cause=NONE(0x0) retry=-1 cid=1803 linkStatus=2 protocolType=2 ifname=ccmni3 addresses=[10.128.159.113/32, 2600:100f:f00c:330f:0:56:6fe2:e801/64] dnses=[/2001:4888:53:ff00:524:d::, /2001:4888:52:ff00:528:d::, /198.224.166.135, /198.224.167.135] gateways=[/10.128.159.113, /::] pcscf=[] mtu=1428 mtuV4=1428 mtuV6=1428 handoverFailureMode=unknown pduSessionId=0 defaultQos=EpsQos { qosClassId=8 downlink=Bandwidth { maxBitrateKbps=0 guaranteedBitrateKbps=0} uplink=Bandwidth { maxBitrateKbps=0 guaranteedBitrateKbps=0}} qosBearerSessions=[] sliceInfo=null trafficDescriptors=[]} [PHONE0]

     代码分析

    DataProfileManager.java - 【frameworks/opt/telephony】

    1. /**
    2.  * Get the APN setting for the network request.
    3.  *
    4.  * @param networkRequest The network request.
    5.  * @param networkType The current data network type.
    6.  * @param ignorePermanentFailure {@code true} to ignore {@link ApnSetting#getPermanentFailed()}.
    7.  * This should be set to true for condition-based retry/setup.
    8.  * @return The APN setting. {@code null} if can't find any satisfiable data profile.
    9.  */
    10. private @Nullable ApnSetting getApnSettingForNetworkRequest(
    11.         @NonNull TelephonyNetworkRequest networkRequest, @NetworkType int networkType,
    12.         boolean ignorePermanentFailure) {
    13.     if (!networkRequest.hasAttribute(
    14.             TelephonyNetworkRequest.CAPABILITY_ATTRIBUTE_APN_SETTING)) {
    15.         loge("Network request does not have APN setting attribute.");
    16.         return null;
    17.     }
    18.  
    19.     //1、优先选择preferred APN，如果满足并且不处于PermanentFailure状态则直接请求
    20.     // If the preferred data profile can be used, always use it if it can satisfy the network
    21.     // request with current network type (even though it's been marked as permanent failed.)
    22.     if (mPreferredDataProfile != null
    23.             && networkRequest.canBeSatisfiedBy(mPreferredDataProfile)
    24.             && mPreferredDataProfile.getApnSetting() != null
    25.             && mPreferredDataProfile.getApnSetting().canSupportNetworkType(networkType)) {
    26.         if (ignorePermanentFailure || !mPreferredDataProfile.getApnSetting()
    27.                 .getPermanentFailed()) {
    28.             return mPreferredDataProfile.getApnSetting();
    29.         }
    30.         log("The preferred data profile is permanently failed. Only condition based retry "
    31.                 + "can happen.");
    32.         return null;
    33.     }
    34.  
    35.     //2、如果没有首选数据配置文件，则过滤掉不能满足网络请求的数据配置文件
    36.     //Note：找不到profile 一般就是这里匹配不到了
    37.     // Filter out the data profile that can't satisfy the request.
    38.     // Preferred data profile should be returned in the top of the list.
    39.     List dataProfiles = mAllDataProfiles.stream()
    40.             .filter(networkRequest::canBeSatisfiedBy)
    41.             // The longest time hasn't used data profile will be in the front so all the data
    42.             // profiles can be tried.
    43.             .sorted(Comparator.comparing(DataProfile::getLastSetupTimestamp))    //并按照它们的最后设置时间进行排序，将最长时间未使用的数据配置文件放在列表的前面
    44.             .collect(Collectors.toList());
    45.     for (DataProfile dataProfile : dataProfiles) {    //然后尝试筛选并使用它们来满足网络请求。
    46.         logv("Satisfied profile: " + dataProfile + ", last setup="
    47.                 + DataUtils.elapsedTimeToString(dataProfile.getLastSetupTimestamp()));
    48.     }
    49.     if (dataProfiles.size() == 0) {
    50.         log("Can't find any data profile that can satisfy " + networkRequest);
    51.         return null;
    52.     }
    53.  
    54.     // Check if the remaining data profiles can used in current data network type.
    55.     dataProfiles = dataProfiles.stream()
    56.             .filter(dp -> dp.getApnSetting() != null
    57.                     && dp.getApnSetting().canSupportNetworkType(networkType))
    58.             .collect(Collectors.toList());
    59.     if (dataProfiles.size() == 0) {
    60.         log("Can't find any data profile for network type "
    61.                 + TelephonyManager.getNetworkTypeName(networkType));
    62.         return null;
    63.     }
    64.  
    65.     // Check if preferred data profile set id matches.
    66.     dataProfiles = dataProfiles.stream()
    67.             .filter(dp -> dp.getApnSetting() != null
    68.                     && (dp.getApnSetting().getApnSetId()
    69.                     == Telephony.Carriers.MATCH_ALL_APN_SET_ID
    70.                     || dp.getApnSetting().getApnSetId() == mPreferredDataProfileSetId))
    71.             .collect(Collectors.toList());
    72.     if (dataProfiles.size() == 0) {
    73.         log("Can't find any data profile has APN set id matched. mPreferredDataProfileSetId="
    74.                 + mPreferredDataProfileSetId);
    75.         return null;
    76.     }
    77.  
    78.     // Check if data profiles are permanently failed.
    79.     dataProfiles = dataProfiles.stream()
    80.             .filter(dp -> ignorePermanentFailure || !dp.getApnSetting().getPermanentFailed())
    81.             .collect(Collectors.toList());
    82.     if (dataProfiles.size() == 0) {
    83.         log("The suitable data profiles are all in permanent failed state.");
    84.         return null;
    85.     }
    86.  
    87.     return dataProfiles.get(0).getApnSetting();
    88. }
    排查接口

    canBeSatisfiedBy in TelephonyNetworkRequest.java -【frameworks/opt/telephony】

    canHandleType in ApnSetting.java【frameworks/base/telephony】


    匹配不到关键就是在网络能力评估的过程，canBeSatisfiedBy会根据APN类型筛选能力匹配的项，在canHandleType检查完APN可用性之后，返回enable且符合网络的APN。

    1. /**
    2. * Check if this network request can be satisfied by a data profile.
    3. *
    4. * @param dataProfile The data profile to check.
    5. * @return {@code true} if this network request can be satisfied by the data profile.
    6. */
    7. public boolean canBeSatisfiedBy(@NonNull DataProfile dataProfile) {
    8.     // If the network request can be translated to OS/App id, then check if the data profile's
    9.     // OS/App id can satisfy it.
    10.     if (hasAttribute(CAPABILITY_ATTRIBUTE_TRAFFIC_DESCRIPTOR_OS_APP_ID)
    11.             && getOsAppId() != null) {
    12.         // The network request has traffic descriptor type capabilities. Match the traffic
    13.         // descriptor.
    14.         if (dataProfile.getTrafficDescriptor() != null && Arrays.equals(getOsAppId().getBytes(),
    15.                 dataProfile.getTrafficDescriptor().getOsAppId())) {
    16.             return true;
    17.         }
    18.     }
    19.  
    20.     // If the network request can be translated to APN setting or DNN in traffic descriptor,
    21.     // then check if the data profile's APN setting can satisfy it.
    22.     if ((hasAttribute(CAPABILITY_ATTRIBUTE_APN_SETTING)
    23.             || hasAttribute(CAPABILITY_ATTRIBUTE_TRAFFIC_DESCRIPTOR_DNN))
    24.             && dataProfile.getApnSetting() != null) {
    25.         // Fallback to the legacy APN type matching.
    26.         List apnTypes = Arrays.stream(getCapabilities()).boxed()
    27.                 .map(DataUtils::networkCapabilityToApnType)
    28.                 .filter(apnType -> apnType != ApnSetting.TYPE_NONE)
    29.                 .collect(Collectors.toList());
    30.         // In case of enterprise network request, the network request will have internet,
    31.         // but APN type will not have default type as the enterprise apn should not be used
    32.         // as default network. Ignore default type of the network request if it
    33.         // has enterprise type as well. This will make sure the network request with
    34.         // internet and enterprise will be satisfied with data profile with enterprise at the
    35.         // same time default network request will not get satisfied with enterprise data
    36.         // profile.
    37.         // TODO b/232264746
    38.         if (apnTypes.contains(ApnSetting.TYPE_ENTERPRISE)) {
    39.             apnTypes.remove((Integer) ApnSetting.TYPE_DEFAULT);
    40.         }
    41.  
    42.         return apnTypes.stream().allMatch(dataProfile.getApnSetting()::canHandleType);
    43.     }
    44.     return false;
    45. }
    46.  
    47. /** @hide */
    48. public boolean canHandleType(@ApnType int type) {
    49.     if (!mCarrierEnabled) {
    50.         return false;
    51.     }
    52.     // DEFAULT can handle HIPRI.
    53.     return hasApnType(type);
    54. }

    定位原因的方法

    查看APNSettings配置是否正确，以上问题就是APN配置了但被disable了。

    [DataProfile=[ApnSetting] INTERNET, 3080, xxxxxx, internet, , null, , null, null, 0, supl | hipri | default, IPV4V6, IP, false, 0, true, 0, 0, 0, 0, 0, gid, xxxxx000000000000, false, UNKNOWN, UNKNOWN, 0, -1, -1, false, 961, TrafficDescriptor={mDnn=internet, null}, preferred=true]

    根据ApnSettings实体节后打印信息，mCarrierEnabled就是上述日志false的位置。

    1. /**
    2.  * Returns the string representation of ApnSetting.
    3.  *
    4.  * This method prints null for unset elements. The output doesn't contain password or user.
    5.  * @hide
    6.  */
    7. public String toString() {
    8.     StringBuilder sb = new StringBuilder();
    9.     sb.append("[ApnSetting] ")
    10.             .append(mEntryName)
    11.             .append(", ").append(mId)
    12.             .append(", ").append(mOperatorNumeric)
    13.             .append(", ").append(mApnName)
    14.             .append(", ").append(mProxyAddress)
    15.             .append(", ").append(UriToString(mMmsc))
    16.             .append(", ").append(mMmsProxyAddress)
    17.             .append(", ").append(portToString(mMmsProxyPort))
    18.             .append(", ").append(portToString(mProxyPort))
    19.             .append(", ").append(mAuthType).append(", ");
    20.     final String[] types = getApnTypesStringFromBitmask(mApnTypeBitmask).split(",");
    21.     sb.append(TextUtils.join(" | ", types));
    22.     sb.append(", ").append(PROTOCOL_INT_MAP.get(mProtocol));
    23.     sb.append(", ").append(PROTOCOL_INT_MAP.get(mRoamingProtocol));
    24.     sb.append(", ").append(mCarrierEnabled);    //APN启用情况
    25.     sb.append(", ").append(mProfileId);
    26.     sb.append(", ").append(mPersistent);
    27.     sb.append(", ").append(mMaxConns);
    28.     sb.append(", ").append(mWaitTime);
    29.     sb.append(", ").append(mMaxConnsTime);
    30.     sb.append(", ").append(mMtuV4);
    31.     sb.append(", ").append(mMtuV6);
    32.     sb.append(", ").append(MVNO_TYPE_INT_MAP.get(mMvnoType));
    33.     sb.append(", ").append(mMvnoMatchData);
    34.     sb.append(", ").append(mPermanentFailed);
    35.     sb.append(", ").append(TelephonyManager.convertNetworkTypeBitmaskToString(
    36.             mNetworkTypeBitmask));
    37.     sb.append(", ").append(TelephonyManager.convertNetworkTypeBitmaskToString(
    38.             mLingeringNetworkTypeBitmask));
    39.     sb.append(", ").append(mApnSetId);
    40.     sb.append(", ").append(mCarrierId);
    41.     sb.append(", ").append(mSkip464Xlat);
    42.     sb.append(", ").append(mAlwaysOn);
    43.     sb.append(", ").append(Objects.hash(mUser, mPassword));
    44.     return sb.toString();
    45. }

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  • 原文地址：https://blog.csdn.net/qq_38666896/article/details/134557586