linux device driver

http://www.gelato.unsw.edu.au/~dsw/public-files/kernel-docs/kernel-api/index.html
http://lwn.net/Kernel/LDD3/
http://blog.chinaunix.net/u1/58901/showart_1934008.html
http://www.deansys.com/doc/ldd3/ch06.html#UsingtheioctlArgument.sect2
http://www.jollen.org/LinuxDeviceDriver/
http://hg.opensolaris.org/sc/src/rbridges/rbridges-quagga/isisd/isis_pfpacket.c
http://svn.dd-wrt.com:8000/dd-wrt/browser/src/router/busybox/networking/arping.c?rev=9719
http://man.sourcentral.org/ubuntu610/zh_TW/7+packet
http://lists.quagga.net/pipermail/quagga-dev/2007-July/004986.html