[Linux Porting] PPPoE porting

1.Downlaod
http://ppp.samba.org/ppp/rp-pppoe-3.10.tar.gz
http://www.roaringpenguin.com/products/pppoe

2.Kernel
CONFIG_PPP=y
CONFIG_PPP_MULTILINK=y
CONFIG_PPP_FILTER=y
CONFIG_PPP_ASYNC=y
CONFIG_PPP_SYNC_TTY=y
CONFIG_PPP_DEFLATE=y
CONFIG_PPP_BSDCOMP=y
CONFIG_PPP_MPPE=y
CONFIG_PPPOE=y
CONFIG_N_HDLC=y
CONFIG_UNIX98_PTYS=y

Refer:
http://tldp.org/HOWTO/PPP-HOWTO/kernel-configuration.html#AEN609
http://rsc.anu.edu.au/General/linux_ppp/ANU-PPP-HOWTO-4.html
http://www.gentoo.org/doc/zh_tw/handbook/handbook-ppc64.xml?part=1&chap=7