Intro

• SFE patches mainly from Qualcomm Open-Sourced Shortcut FE driver(SFE).
• Some modification on gwlim's patches for bugfix and simplicity.
• Works on LEDE 17.01 Trunk (For now the HEAD Commit: afca23558a2fbfb2cb044ec69bfb9a7447121927)
• 74kc CPU is able to run 24kc instruction. Feel free to compile 24kc target binary after applying SFE patches for 74kc CPU. (Build Config: CPU_TYPE)

Build

1. Clone the code

git clone -b lede-17.01 https://github.com/lede-project/source.git lede.bak
git clone https://github.com/kings-way/ar71xx-fastpath-patch.git sfe_patch
cp -r lede.bak lede

2. Apply the patch

• For MIPS 24kc:

   cd lede
   cp -r ../sfe_patch/patch_24kc/*  ./
   ./patch_SFE.sh
  

• For MIPS 74kc:

   cd lede
   cp -r ../sfe_patch/patch_74kc/*  ./
   ./patch_SFE.sh
  

3. Config & Compile

Make sure you choose these

Kernel Modules > Network Support > kmod-fast-classifier

Kernel Modules > Network Support > kmod-shortcut-fe or

Kernel Modules > Network Support > kmod-shortcut-fe-cm

Kernel Modules > Wireless Drivers > kmod-owl-loader ==> For nand device with Atheros PCI(e) Wifi chip

make menuconfig

make -j[XX]
# make V=s -j1 with more verbose output for trouble shooting

Refer

• The source of these patches

https://github.com/gwlim/mips24k-ar71xx-lede-patch

https://github.com/gwlim/mips74k-ar71xx-lede-patch

gwlim/mips24k-ar71xx-lede-patch#13

gwlim/mips74k-ar71xx-lede-patch#25

• Other helpful information

https://github.com/dissent1/sfe-src

https://github.com/openwrt-stuff/qca

lede-project/source#1269

https://forum.lede-project.org/t/hardware-nat-for-lede/1094

https://forum.lede-project.org/t/qualcomm-fast-path-for-lede/4582

https://lists.infradead.org/pipermail/lede-commits/2016-September/000816.html