How to prevent realtek Wi-Fi from sleep mode?

http://raspberrypi.stackexchange.com/questions/1384/how-do-i-disable-suspend-mode

Wireless tools for Android

Note that Android uses libnl2.0 which is not compatible with source code for libnl3.0

https://github.com/nvamelichev/wireless-tools-android

How to compile libnl 3.0 on Raspberry Pi

Required environment: Raspberry Pi, Raspbian
Required package: git, libtool, autoconf, bison, flex

0. If you have any packages you did not install, install them first.

$ sudo apt-get install git libtool autoconf bison flex

1. Download the source code through GIT

$ git clone https://github.com/tgraf/libnl.git


2. Run Autoconf using autogen.sh. Autoconf will automatically sets the compiling environment for Raspberry Pi(for ARM-EABI CPU)

$ ./autogen.sh


3. Configure

$ ./configure


4. Build it and install it

$ make

$ sudo make install


That's it!

You can also read this post in Korean from the link below:
http://yfaney.tistory.com/299

Reference: Netlink Library hompage(http://www.infradead.org/~tgr/libnl/doc/core.html)