/ppf

Primary LanguageC++

PPF - P4 Packet Filter

How hard would it be to implement P4 frontend from scratch? P4 is a domain-specific language with very simple syntax (P4 16 in particular). We would use official LLVM tutorial ('Kaleidoscope' use case).

Scope of the project is to enable compiling P4 to eBPF bytecode bypassing p4c and clang. P4 language has other capabilities, like describing abstract networking hardware, but those are not the focus here (feel free to experiment with the code though).

Limitations:

  • No standalone builds (to do)
  • No preprocessor support yet (next iteration)
  • No driver yet (next iteration)

To build, checkout llvm and then checkout PPF repository into its tools subdirectory:

$ git clone https://github.com/llvm-mirror/llvm.git
$ cd llvm/tools
$ git clone https://github.com/ppenzin/ppf.git

$ mkdir build
$ cd build
$ cmake ../llvm
$ make