Android系统DHCP问题【转】
本文转载自：http://blog.csdn.net/tankai19880619/article/details/42972551
一、现象
12小时压测wifi连接后，发现网络连接中断；相关log：
我们关心状态变化部分ConnectivityService: ConnectivityChange for WIFI
- 01-19-17:42;0501-01 08:00:38.552 954 1117 D ConnectivityService: --NetworkStateTracker.EVENT_STATE_CHANGED handle--
- 01-19-17:42;0501-01 08:00:38.552 954 1117 D ConnectivityService: ConnectivityChange for WIFI: CONNECTED/CONNECTED
- 01-19-17:42;0501-01 08:00:38.552 954 1117 D ConnectivityService: Setting TCP values: [524288,1048576,2097152,262144,524288,1048576] which comes from [net.tcp.buffersize.wifi]
- /////////////////////////////////////////////////////////////////////////////////////////////////////12hago
- 01-20-05:14;2201-01 19:33:18.943 1267 1386 V shizx : @@@clienttype:@@@TCL-CN-MT55CD-F3700A-LG
- 01-20-05:14;22ERROR!!! MlmeEnqueueForRecv: un-recongnized mgmt->subtype=15
- 01-20-05:14;2301-01 19:33:19.572 954 1808 E Dhinit:
- 01-20-05:14;23 waitpid returned pid 1835, status = 00000009
- 01-20-05:14;23cpStateMacinit: process 'dhcpcd_wlan0', pid 1835 exited
- 01-20-05:14;23hine: DHCP failed on wlan0: Timed out waiting for DHCP Renew to finish
- 01-20-05:14;2301-01 19:33:19.574 954 1808 D DHCP : ifc_init, return = 0
- 01-20-05:14;2301-01 19:33:19.574 954 1808 D DHCP : ifc_set_addr(wlan0, xx) = 0
- 01-20-05:14;2301-01 19:33:19.574 954 1808 D DHCP : ifc_close
- 01-20-05:14;2301-01 19:33:19.779 954 1115 D WifiHW : send cmd is DRIVER POWERMODE 0
- 01-20-05:14;2301-01 19:33:19.779 954 1115 D WifiHW : send cmd is DRIVER BTCOEXMODE 2
- 01-20-05:14;2301-01 19:33:19.781 954 1115 E WifiStateMachine: IP configuration failed
- 01-20-05:14;2301-01 19:33:19.781 954 1115 D WifiHW : send cmd is DISCONNECT
- 01-20-05:14;2301-01 19:33:19.782 1558 1558 D wpa_supplicant: wpa_driver_wext_deauthenticate
- 01-20-05:14;2301-01 19:33:19.789 1558 1558 D wpa_supplicant: wpa_driver_wext_set_key: alg=0 key_idx=0 set_tx=0 seq_len=0 key_len=0
- 01-20-05:14;2301-01 19:33:19.790 1558 1558 D wpa_supplicant: wpa_driver_wext_set_key: alg=0 key_idx=1 set_tx=0 seq_len=0 key_len=0
- 01-20-05:14;2301-01 19:33:19.790 954 1110 D NetdConnector: RCV <- {600 Iface linkstate wlan0 up}
- 01-20-05:14;2301-01 19:33:19.793 1558 1558 D wpa_supplicant: wpa_driver_wext_set_key: alg=0 key_idx=2 set_tx=0 seq_len=0 key_len=0
- 01-20-05:14;2301-01 19:33:19.793 1558 1558 D wpa_supplicant: wpa_driver_wext_set_key: alg=0 key_idx=3 set_tx=0 seq_len=0 key_len=0
- 01-20-05:14;2301-01 19:33:19.794 1558 1558 D wpa_supplicant: wpa_driver_wext_set_key: alg=0 key_idx=0 set_tx=0 seq_len=0 key_len=0
- 01-20-05:14;2301-01 19:33:19.795 1558 1558 D wpa_supplicant: wpa_driver_wext_set_operstate: operstate 1->0 (DORMANT)
- 01-20-05:14;2301-01 19:33:19.795 1558 1558 D wpa_supplicant: netlinkinit:
- 01-20-05:14;23 waitpid returned pid 1126, status = 00000009
- 01-20-05:14;23init: process 'dhcpcd_eth0', pid 1126 exited
- 01-20-05:14;23: Operstate: linkmode=-1, operstate=5
二、分析
关键部分：
- DhcpStateMachine: DHCP failed on wlan0: Timed out waiting for DHCP Renew to finish
- init: waitpid returned pid 1835, status = 00000009
- init: process 'dhcpcd_wlan0', pid 1835 exited
1.frameworks/base/core/java/android/net/DhcpStateMachine.java
- private boolean runDhcp(DhcpAction dhcpAction) {
- if (dhcpAction == DhcpAction.START) {
- if (DBG) Log.d(TAG, "DHCP request on " + mInterfaceName);
- success = NetworkUtils.runDhcp(mInterfaceName, dhcpInfoInternal);
- mDhcpInfo = dhcpInfoInternal;
- } else if (dhcpAction == DhcpAction.RENEW) {
- if (DBG) Log.d(TAG, "DHCP renewal on " + mInterfaceName);
- success = NetworkUtils.runDhcpRenew(mInterfaceName, dhcpInfoInternal); //f分析该函数
- dhcpInfoInternal.updateFromDhcpRequest(mDhcpInfo);
- }
- if (success) {
- ......
- } else {
- //这里就是打印：DhcpStateMachine: DHCP failed on wlan0: Timed out waiting for DHCP Renew to finish
- Log.e(TAG, "DHCP failed on " + mInterfaceName + ": " +
- NetworkUtils.getDhcpError());
- NetworkUtils.stopDhcp(mInterfaceName);
- mController.obtainMessage(CMD_POST_DHCP_ACTION, DHCP_FAILURE, 0)
- .sendToTarget();
- }
- return success;
- }
2.frameworks/base/core/java/android/net/NetworkUtils.java
- public native static boolean runDhcpRenew(String interfaceName, DhcpInfoInternal ipInfo);
3.frameworks/base/core/jni/android_net_NetUtils.cpp
- static jboolean android_net_utils_runDhcpRenew(JNIEnv* env, jobject clazz, jstring ifname, jobject info)
- {
- return android_net_utils_runDhcpCommon(env, clazz, ifname, info, true);
- }
- static jboolean android_net_utils_runDhcpCommon(JNIEnv* env, jobject clazz, jstring ifname,
- jobject info, bool renew)
- {
- if (renew) {
- result = ::dhcp_do_request_renew(nameStr, ipaddr, gateway, &prefixLength,
- dns1, dns2, server, &lease, vendorInfo);
- }
- }
4.system/core/libnetutils/dhcp_utils.c
- int dhcp_do_request_renew(const char *interface,
- char *ipaddr,
- char *gateway,
- uint32_t *prefixLength,
- char *dns[],
- char *server,
- uint32_t *lease,
- char *vendorInfo,
- char *domain,
- char *mtu)
- {
- if (wait_for_property(result_prop_name, NULL, 30) < 0) {
- snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for DHCP Renew to finish"); //这是最关键的错误部分
- return -1;
- }
- }
- static int wait_for_property(const char *name, const char *desired_value, int maxwait)
- {
- char value[PROPERTY_VALUE_MAX] = {'\0'};
- int maxnaps = (maxwait * 1000) / NAP_TIME;
- if (maxnaps < 1) {
- maxnaps = 1;
- }
- //add by tank
- // add for MStar Android Patch Begin
- maxnaps = maxnaps + 1;
- usleep(50*1000);
- // add for MStar Android Patch End
- //end tank
- while (maxnaps-- > 0) {
- usleep(NAP_TIME * 1000);
- if (property_get(name, value, NULL)) {
- if (desired_value == NULL ||
- strcmp(value, desired_value) == 0) {
- return 0;
- }
- }
- //add by tank@
- // add for MStar Android Patch Begin
- usleep(NAP_TIME * 1000);
- // add for MStar Android Patch End
- //end tank
- }
- return -1; /* failure */
- }
三、解决
合入上处4中add by tank后问题解决。
其他问题，mac地址冲突导致重启后无法获取IP。
- D/NetdConnector( 958): RCV <- {213 5c:36:b8:4d:ab:7a 0.0.0.0 0 [up broadcast multicast]}
- D/NetdConnector( 958): RSP <- {213 5c:36:b8:4d:ab:7a 0.0.0.0 0 [up broadcast multicast]}
- D/NetworkManagementService( 958): rsp <213 5c:36:b8:4d:ab:7a 0.0.0.0 0 [up broadcast multicast]>
- D/NetworkManagementService( 958): flags <[up broadcast multicast]>
- D/NetworkManagementService( 958): Registering observer
- I/EthernetStateTracker( 958): reset device eth0
- D/NetUtils( 958): android_net_utils_resetConnections in env=0x7d6950 clazz=0xad200001 iface=eth0 mask=0x3
- D/DHCP ( 958): ifc_init, return = 0
- D/DHCP ( 958): ifc_close
- D/DHCP ( 958): ifc_init, return = 0
- D/DHCP ( 958): ifc_up(eth0) = 0
- D/DHCP ( 958): ifc_close
- D/DHCP ( 958): ifc_init, return = 0
- D/DHCP ( 958): ifc_close
- D/DHCP ( 958): ifc_init, return = 0
- D/DHCP ( 958): ifc_close
- D/dhcp ( 1124): enter dhcpcd service
- D/dhcp ( 1124): enter dhcpcd service add options
- D/dhcp ( 1124): enter dhcpcd service leave option
- D/dhcp ( 1124): enter dhcpcd service chdir
- D/dhcp ( 1124): enter dhcpcd service dump
- D/dhcp ( 1124): enter dhcpcd service master
- E/dhcp ( 1124): version 5.2.10 starting
- D/DHCP ( 1124): ifc_init, return = 0
- D/DHCP ( 1124): ifc_close
- F/dhcp ( 1124): eth0: using hwaddr 5c:36:b8:4d:ab:7a
- F/dhcp ( 1124): eth0: executing `/system/etc/dhcpcd/dhcpcd-run-hooks', reason PREINIT
- I/dhcp ( 1124): host does not support a monotonic clock - timing can skew
- F/dhcp ( 1124): eth0: reading lease `/data/misc/dhcp/dhcpcd-eth0.lease'
- E/dhcp ( 1124): eth0: broadcasting for a lease
- F/dhcp ( 1124): eth0: sending DISCOVER (xid 0xd92bbde3), next in 3.54 seconds
Android系统DHCP问题【转】的更多相关文章
- 深入浅出 - Android系统移植与平台开发（五）- 编译Android源码（转）
2.3编译Android源码 Android源码体积非常庞大,由Dalvik虚拟机.Linux内核.编译系统.框架代码.Android定制C库.测试套件.系统应用程序等部分组成,在编译Android源 ...
- Android系统在超级终端下必会的命令大全（adb shell命令大全）
. 显示系统中全部Android平台: android list targets . 显示系统中全部AVD(模拟器): android list avd . 创建AVD(模拟器): android c ...
- [总结]Android系统体系结构
Android 从图中可以看出Android主要的组成部分,其中底层是Linux的内核,包括的主要就是文件.内存.系统资源等的管理,Google在这部分的工作主要就是电源管理和一部分驱动,并且整合上层 ...
- 【Android 系统开发】 编译 Android文件系统 u-boot 内核 并烧写到 OK-6410A 开发板上
博客地址 : http://blog.csdn.net/shulianghan/article/details/40299813 本篇文章中用到的工具源码下载 : -- ok-6410A 附带的 A ...
- (转)android系统架构及源码目录结构
转自:http://blog.csdn.net/finewind/article/details/46324507 1. Android系统架构: android系统架构采用了分层架构的思想,如下图所 ...
- Android 系统属性-SystemProperties详解***
创建与修改android属性用Systemproperties.set(name, value),获取android属性用Systemproperties.get(name),需要注意的是androi ...
- 最新Android系统版本与API等级对应关系表
最新Android系统版本与API等级对应关系表 从Android官网拷过来的,方便查阅... 官网地址:https://developer.android.com/guide/topics/mani ...
- Android系统全貌 (转)
转自Gityuan的Android开篇,对自我学习作进一步整理. Android系统以Linux内核作为基底,上层采用Native层和Java层.系统分为内核空间和用户空间,并通过系统调用(Sysca ...
- android系统release签名
转自:http://blog.csdn.net/yangkai6121/article/details/38682321 为什么需要给Android系统签个名才能进行CTS认证呢?原来我们通过make ...
随机推荐
- Nginx日志参数、location匹配规则、设置密码
1.三个参数 a)$http_referer:记录此次请求是从哪个链接访问过来的: 是直接访问,还是从其他网站跳转过来的. 例如:访问:http://www.etiantian.com/,其页面首页是 ...
- Visual Studio各版本下载链接
Visual Studio 2015 企业版 链接: https://pan.baidu.com/s/1NFGyIbm2RNsuwwEU-bYicQ 提取码: m961 Visual Studio 2 ...
- sshpass结合ssh和scp可以自动完成密码登录，无需手动输入密码
使用方法: 1.sshpass -p 123456 ssh admin@1.1.1.1 "touch file" 远程创建文件file 2.sshpass -p 123456 s ...
- Java中的BigInteger在ACM中的应用
Java中的BigInteger在ACM中的应用 在ACM中的做题时,常常会遇见一些大数的问题.这是当我们用C或是C++时就会认为比較麻烦.就想有没有现有的现有的能够直接调用的BigInter,那样就 ...
- POJ 3978（求素数）
知识点: 1.求素数的test,从2~sqrt(n): 2.假设数据非常多,能够用素数表记录,然后sum=prime[m]-prime[n]求得! ! !! !!! !! ...
- webpack实用配置总结
1.webpack.config.js配置文件为: //处理共用.通用的js var webpack = require('webpack'); //处理html模板 var htmlWebpackP ...
- Spring Cloud(十二)：Spring Cloud Zuul 限流详解（附源码）（转）
前面已经介绍了很多zuul的功能,本篇继续介绍它的另一大功能.在高并发的应用中,限流往往是一个绕不开的话题.本文详细探讨在Spring Cloud中如何实现限流. 在 Zuul 上实现限流是个不错的选 ...
- Spark SQL之External DataSource外部数据源（二）源代码分析
上周Spark1.2刚公布,周末在家没事,把这个特性给了解一下,顺便分析下源代码,看一看这个特性是怎样设计及实现的. /** Spark SQL源代码分析系列文章*/ (Ps: External Da ...
- python--面向对象—接口
开放封闭原则依赖导致原则接口隔离原则继承多态抽象类和接口类 编程思想:为子类做规范 归一化设计:几个类都实现了相同的方法 抽象类:最好单继承,且可以简单的实现功能 接口类:可以多继承,且最好不实 ...
- PHP部分--file图片上传服务器、图片路径存入数据库，并读取
前端代码 <form action="shangchuan.php" method="post" enctype="multipart/form ...