android移植wifis

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android移植wifis

以前做的工作，今天想起来，有一些注意的地方，整理一下，以做备忘

1、修改wpa_supplicant.conf文件，分为两种方式（Android private socket和Unix standard socket），后面的init.rc修改需要与此对应：

Android private socket

ctrl_interface=wlan0
update_config=1

- Unix standard socket

ctrl_interface=DIR=/data/system/wpa_supplicant GROUP=wifi
update_config=1
#Depending on your driver you might also want to add:
ap_scan=1
#If you have AP association problems with should change to ap_scan=0 to let the driver do the association instead of wpa_supplicant.

2、修改init.rc，需要与wpa_supplicant.conf文件的修改对应，

Android private socket

mkdir /system/etc/wifi 0770 wifi wifi
chmod 0770 /system/etc/wifi
chmod 0660 /system/etc/wifi/wpa_supplicant.conf
chown wifi wifi /system/etc/wifi/wpa_supplicant.conf
#wpa_supplicant control socket for android wifi.c (android private socket)
mkdir /data/misc/wifi 0770 wifi wifi
mkdir /data/misc/wifi/sockets 0770 wifi wifi
chmod 0770 /data/misc/wifi
chmod 0660 /data/misc/wifi/wpa_supplicant.conf
chown wifi wifi /data/misc/wifi
chown wifi wifi /data/misc/wifi/wpa_supplicant.conf

service wpa_supplicant /system/bin/wpa_supplicant -dd -Dwext -iwlan0 -c /system/etc/wifi/wpa_supplicant.conf
socket wpa_wlan0 dgram 660 wifi wifi
group system wifi inet
disabled
oneshot

If you use a Unix standard socket in wpa_supplicant.conf (see above) add:

# wpa_supplicant socket (unix socket mode)
mkdir /data/system/wpa_supplicant 0771 wifi wifi
chmod 0771 /data/system/wpa_supplicant
chown wifi wifi /data/system/wpa_supplicant

service wpa_supplicant /system/bin/wpa_supplicant -dd -Dwext -iwlan0 -c /system/etc/wifi/wpa_supplicant.conf
group system wifi inet
disabled
oneshot

Do not add these if you use Android private socket because it will make wpa_supplicant non-functional, becausehardware/libhardware_legacy/wifi/wifi.c check for existence of the /data/system/wpa_supplicant folder and will pass a wrong interface name towpa_ctrl_open() function.

主要注意的就是上面说的这两个部分init.rc和wpa_supplicant.conf的修改，如果其他的方面遇到问题，可以给我留言，我们一起共同探讨！

下面给出一些值得或者说可以参考的链接：

http://blog.sina.com.cn/s/blog_5f35912f0100lsyj.html

http://blog.sina.com.cn/s/blog_5f35912f0100losg.html

http://blog.sina.com.cn/s/blog_5f35912f0100q3c1.html

http://blog.sina.com.cn/s/blog_5f35912f0100q3p1.html

http://hi.baidu.com/anly_jun/blog/item/cc37e706952c937003088161.html（分析的很细致，推荐）

http://blog.csdn.net/pottichu/article/details/5691896

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