Add WiFi tethering support

Change-Id: I66447ac705e65577910c36a518773ff04c8b6775

device.mk

@@ -111,6 +111,7 @@ PRODUCT_COPY_FILES += \
 # WiFi
 PRODUCT_COPY_FILES += \
         device/zte/blade/prebuilt/system/etc/wifi/wpa_supplicant.conf:system/etc/wifi/wpa_supplicant.conf \
+        device/zte/blade/prebuilt/system/etc/wifi/hostapd.conf:system/etc/wifi/hostapd.conf \
         device/zte/blade/prebuilt/system/wifi/ar6000.ko:system/wifi/ar6000.ko \
         device/zte/blade/prebuilt/system/wifi/regcode:system/wifi/regcode \
         device/zte/blade/prebuilt/system/wifi/data.patch.hw2_0.bin:system/wifi/data.patch.hw2_0.bin \

overlay/frameworks/base/core/res/res/values/config.xml

@@ -30,12 +30,29 @@
     </string-array>
 
     <!-- List of regexpressions describing the interface (if any) that represent tetherable
-         USB interfaces.  If the device doesn't want to support tething over USB this should
-         be empty.  An example would be "usb.*" -->
+         Wifi interfaces.  If the device doesn't want to support tethering over Wifi this
+         should be empty.  An example would be "softap.*" -->
+    <string-array translatable="false" name="config_tether_wifi_regexs">
+        <item>"athap0"</item>
+    </string-array>
+
+    <!-- List of regexpressions describing the interface (if any) that represent tetherable
+         bluetooth interfaces.  If the device doesn't want to support tethering over bluetooth this
+         should be empty. -->
     <string-array translatable="false" name="config_tether_bluetooth_regexs">
         <item>"bnep\\d"</item>
     </string-array>
 
+    <!-- Array of ConnectivityManager.TYPE_xxxx values allowable for tethering -->
+    <!-- Common options are [1, 4] for TYPE_WIFI and TYPE_MOBILE_DUN or
+    <!== [0,1,5,7] for TYPE_MOBILE, TYPE_WIFI, TYPE_MOBILE_HIPRI and TYPE_BLUETOOTH -->
+    <integer-array translatable="false" name="config_tether_upstream_types">
+        <item>0</item>
+        <item>1</item>
+        <item>5</item>
+        <item>7</item>
+    </integer-array>
+
     <!-- Flag indicating whether the we should enable the automatic brightness in Settings.
          Software implementation will be used if config_hardware_auto_brightness_available is not set -->
     <bool name="config_automatic_brightness_available">true</bool>

prebuilt/root/init.blade.rc

@@ -127,6 +127,12 @@ service iprenew_bnep0 /system/bin/dhcpcd -n
     disabled
     oneshot
 
+service hostapd /system/bin/hostapd /data/misc/wifi/hostapd.conf
+    socket hostapd_athap0 dgram 660 wifi wifi
+    group wifi inet
+    oneshot
+    disabled
+
 service abtfilt /system/bin/abtfilt -c -d -z -n
     class main
     disabled

prebuilt/system/etc/wifi/hostapd.conf

@@ -0,0 +1,8 @@
+auth_algs=1
+channel_num=1
+dtim_period=1
+preamble=0
+max_num_sta=8
+beacon_int=100
+ssid=AndroidTether
+interface=athap0