SFE - Fast Path Shortcut-fe for OpenWRT

What is Shortcut-fe?

Shortcut is an in-Linux-kernel IP packet forwarding engine. It's designed to offer very high speed IP packet forwarding based on IP connection tracking. It's dramatically faster than the standard netfilter-based NAT forwarding path but is designed to synchronise state back to netfilter/conntrack so that it doesn't need to deal with all of the complexities of special cases.

Development

To build your own firmware you need a GNU/Linux, BSD or MacOSX system (case sensitive filesystem required). Cygwin is unsupported because of the lack of a case sensitive file system.

Requirements

You need the following tools to compile OpenWrt, the package names vary between distributions. A complete list with distribution specific packages is found in the Build System Setup documentation.

binutils bzip2 diff find flex gawk gcc-6+ getopt grep install libc-dev libz-dev
make4.1+ perl python3.6+ rsync subversion unzip which

Quickstart

1. Run ./scripts/feeds update -a to obtain all the latest package definitions defined in feeds.conf / feeds.conf.default Fast Path Builds for OpenWRT

2. Run ./scripts/feeds install -a to install symlinks for all obtained packages into package/feeds/

3. Run make menuconfig to select your preferred configuration for the toolchain, target system & firmware packages. To enable the Fast Path module go to:

   • "Kernel Modules > Network Support" and select

     • kmod-fast-classifier

4. If you want to compile with multiple cores it is highly recommended to run the make download before the make below;

5. Run make to build your firmware with only one core or make -jN where N is the number of cores you have +1, or simply run make -j $(($(nproc)+1)) ,Remembering that if you are running with more than one core, you must run step 4 first to avoid possible errors. This will download all sources, build thecross-compile toolchain and then cross-compile the GNU/Linux kernel & all chosen applications for your target system.

Related Repositories

The main repository uses multiple sub-repositories to manage packages of different categories. All packages are installed via the OpenWrt package manager called opkg. If you're looking to develop the web interface or port packages to OpenWrt, please find the fitting repository below.

• LuCI Web Interface: Modern and modular interface to control the device via a web browser.

• OpenWrt Packages: Community repository of ported packages.

• OpenWrt Routing: Packages specifically focused on (mesh) routing. Fast Path Builds for OpenWRT

Support Information

For a list of supported devices see the OpenWrt Hardware Database

Documentation

• Quick Start Guide
• User Guide
• Developer Documentation
• Technical Reference

Support Community

• Forum: For usage, projects, discussions and hardware advise.
• Support Chat: Channel #openwrt on oftc.net.

Developer Community

• Bug Reports: Report bugs in OpenWrt
• Dev Mailing List: Send patches
• Dev Chat: Channel #openwrt-devel on oftc.net.

License

OpenWrt is licensed under GPL-2.0