Build with Wasm-BPF Plug-in
The Wasm-BPF plug-in allows WebAssembly programs to interact with eBPF programs running in the Linux kernel. This enables use cases such as network monitoring, performance tracing, and security enforcement from within a WebAssembly module running on WasmEdge.
Prerequisites
The Wasm-BPF plug-in requires libbpf >= 1.2.0, libelf, and zlib. On Ubuntu 20.04:
sudo apt update
sudo apt install -y libbpf-dev libelf-dev zlib1g-dev
If libbpf >= 1.2.0 is not available through your package manager, the build system will automatically download and build it from source via FetchContent. In that case, you still need libelf and zlib installed.
Build WasmEdge with Wasm-BPF Plug-in
To enable the Wasm-BPF plug-in, developers need to build WasmEdge on Linux with the CMake option -DWASMEDGE_PLUGIN_WASM_BPF=ON.
cd <path/to/your/wasmedge/source/folder>
cmake -GNinja -Bbuild -DCMAKE_BUILD_TYPE=Release -DWASMEDGE_PLUGIN_WASM_BPF=ON
cmake --build build
cmake --install build
If the built wasmedge CLI tool cannot find the Wasm-BPF plug-in, you can set the WASMEDGE_PLUGIN_PATH environment variable to the plug-in installation path (such as /usr/local/lib/wasmedge/, or the built plug-in path build/plugins/wasm_bpf/) to try to fix this issue.
Then you will have an executable wasmedge runtime under /usr/local/bin and the Wasm-BPF plug-in under /usr/local/lib/wasmedge/libwasmedgePluginWasmBpf.so after installation.
For more information, you can refer to the GitHub repository.