softAP调试过程

Android 4.4
流程
问题

1 流程

打开设置里的ap热点

.packages/apps/TvSettings/Settings/src/com/android/settings/TetherSettings.Java

    public boolean onPreferenceChange(Preference preference, Object value) {boolean enable = (Boolean) value;if (enable) {startProvisioningIfNecessary(WIFI_TETHERING);} else {mWifiApEnabler.setSoftapEnabled(false);}return false;}

然后 startProvisioningIfNecessary(WIFI_TETHERING);

接着startTethering();

接着mWifiApEnabler.setSoftapEnabled(true);

进入

packages/apps/TvSettings/Settingssrc/com/android/settings/wifi/WifiApEnabler.java

setSoftapEnabled

转向frameworks的frameworks/base/wifi/java/android/net/wifi/WiFiManager.java

    public boolean setWifiApEnabled(WifiConfiguration wifiConfig, boolean enabled) {try {mService.setWifiApEnabled(wifiConfig, enabled);return true;} catch (RemoteException e) {return false;}}

调用Service

frameworks/base/services/java/com/android/server/wifi/WifiService.java

    public void setWifiApEnabled(WifiConfiguration wifiConfig, boolean enabled) {enforceChangePermission();// null wifiConfig is a meaningful input for CMD_SET_APif (wifiConfig == null || wifiConfig.isValid()) {mWifiController.obtainMessage(CMD_SET_AP, enabled ? 1 : 0, 0, wifiConfig).sendToTarget();} else {Slog.e(TAG, "Invalid WifiConfiguration");}}

后边转到loaddriver

                    if (mWifiNative.loadDriver()) {setWifiApState(WIFI_AP_STATE_ENABLING);transitionTo(mSoftApStartingState);} else {loge("Failed to load driver for softap");}

下载驱动（我这边是错在这里）

  public void wifiFirmwareReload(String wlanIface, String mode) {mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);try {mConnector.execute("softap", "fwreload", wlanIface, mode);} catch (NativeDaemonConnectorException e) {throw e.rethrowAsParcelableException();}}

  public void wifiFirmwareReload(String wlanIface, String mode) {mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);try {mConnector.execute("softap", "fwreload", wlanIface, mode);} catch (NativeDaemonConnectorException e) {throw e.rethrowAsParcelableException();}}

报错是

/WifiStateMachine( 1802): Failed to reload STA firmware java.lang.IllegalArgumentException: command '8 softap fwreload wlan0 STA' failed with '501 8 SoftAP command has failed'

下载不到固件

继续看下去

system/netd/SoftapController.cpp: ALOGE("SoftAP fwreload is missing arguments. Please use: softap <wlan iface> <AP|P2P|STA>");

int SoftapController::fwReloadSoftap(int argc, char *argv[])
{char *fwpath = NULL;if (argc < 4) {ALOGE("SoftAP fwreload is missing arguments. Please use: softap <wlan iface> <AP|P2P|STA>");return ResponseCode::CommandSyntaxError;}if (strcmp(argv[3], "AP") == 0) {fwpath = (char *)wifi_get_fw_path(WIFI_GET_FW_PATH_AP);} else if (strcmp(argv[3], "P2P") == 0) {fwpath = (char *)wifi_get_fw_path(WIFI_GET_FW_PATH_P2P);} else if (strcmp(argv[3], "STA") == 0) {fwpath = (char *)wifi_get_fw_path(WIFI_GET_FW_PATH_STA);}if (!fwpath)return ResponseCode::CommandParameterError;if (wifi_change_fw_path((const char *)fwpath)) {ALOGE("Softap fwReload failed");return ResponseCode::OperationFailed;}else {ALOGD("Softap fwReload - Ok");}return ResponseCode::SoftapStatusResult;
}

这部分wlan 的sta与 ap是分开的，但是现在用的驱动是合在一起的，在串口用hostap可以起来

hostapd -B hostapd.conf

hostapd.conf如下

现在问题在于要把原生的下载两个驱动的方式改为一种

继续看获取驱动的方式

const char *wifi_get_fw_path(int fw_type)
{switch (fw_type) {case WIFI_GET_FW_PATH_STA:return WIFI_DRIVER_FW_PATH_STA;case WIFI_GET_FW_PATH_AP:return WIFI_DRIVER_FW_PATH_AP;case WIFI_GET_FW_PATH_P2P:return WIFI_DRIVER_FW_PATH_P2P;}return NULL;
}

把 ap 的path改为sta 的path

const char *wifi_get_fw_path(int fw_type)
{switch (fw_type) {case WIFI_GET_FW_PATH_STA:return WIFI_DRIVER_FW_PATH_STA;case WIFI_GET_FW_PATH_AP:return WIFI_DRIVER_FW_PATH_STA;case WIFI_GET_FW_PATH_P2P:return WIFI_DRIVER_FW_PATH_P2P;}return NULL;
}

问题解决

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softAP调试过程

Android 4.4

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