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bpfilter is a daemon and shared library aiming to translate packets filtering rules into BPF programs.

bpfilter requires an up-to-date system running Linux 6.4+ and libbpf 1.2+. Build dependencies are the following on Fedora 38:

sudo dnf install -y \
    cmake libbpf-devel \
    libcmocka-devel clang-tools-extra lcov \
    doxygen python3-sphinx python3-breathe python3-furo

To build bpfilter (from the source directory):

cmake -S . -B build
make -C build -j

bpfilter daemon will be in $BUILD/src/bpfilter, and libbpfilter.so will be in $BUILD/lib/libbpfilter.so.

bpfilter is GPLv2 licensed, as found in the COPYING file.

bpfilter was originally developed by Dmitrii Banshchikov as a Linux kernel usermode helper.