OpenFlow on OpenWrt

From OpenFlow Wiki

NOTE : This page is deprecated, look here for up-to-date instructions.

Contents 1 OpenWrt 2.6 Kernel 1.1 Add the openflow package to the kamikaze workspace with 2.6 kernel 1.2 Configure the build (example for Linksys WRT54G/GS/GL and WRTSL54GS) 1.3 Locate the images and package files (2.6) 2 Switch/VLAN architecture on OpenWRT and OpenFlow Kernel Module

OpenWrt 2.6 Kernel

Special Notes:

• Current OF package builds control and data plane separately.
• Kamikaze doesn't enable LuCI by default. Manual configuration is needed.

Add the openflow package to the kamikaze workspace with 2.6 kernel

cd ${WORKING_DIR} 
git clone git://gitosis.stanford.edu/openflow-openwrt.git
cd ${WORKING_DIR}/trunk/package
ln -s ${WORKING_DIR}/openflow-openwrt/openwrt/package/openflow-0.8.9/
find ${WORKING_DIR}/trunk/target/linux/generic-2.6 -iname "patches-*" | xargs -n 1 cp ${WORKING_DIR}/openflow-openwrt/openwrt/patches/691-bridge_export_symbol.patch
cd ${WORKING_DIR}/trunk
mkdir files
cp -a ${WORKING_DIR}/openflow-openwrt/luci/* files

Copy the specific config files to the files/etc/config directory (example for Linksys/Broadcom device) otherwise the whole switch is added as one OpenFlow port.

cp -a ${WORKING_DIR}/openflow-openwrt/configs/brcm47xx/etc/config/* files/etc/config/

Configure the build (example for Linksys WRT54G/GS/GL and WRTSL54GS)

make menuconfig 

• Choose the kernel version from Target System
  • Linksys WRT54G/GS/GL and WRTSL54GS, choose Broadcom BCM947xx/953xx [2.6]

• Choose target profile from Target Profile
  • If target is 2.6, Target profile => Generic, Broadcom Wifi(default)

• Disable the userspace Ethernet Bridge utilities under "Base System" (we don't use the module, so they waste space)

• Select openflow package under "Network"

• Select openflow kernel module under "Kernel Module" -> "Network Support"

make kernel_menuconfig

• Configure the Kernel - Compile the Ethernet Bridge as a M (not * or disabled) under Networking support ---> Networking Options ---> 802.1d Ethernet Bridging

• Build the image

make

Locate the images and package files (2.6)

• images

./bin/

• packages

./bin/packages/< platform >_< uClibc version >/

Switch/VLAN architecture on OpenWRT and OpenFlow Kernel Module

Please have a look into the OpenFlow wiki.