Breaking changes

• Map.Pin and Program.Pin only allow pinning to a single location on a BPFFS, repeated calls will move the pinned object rather than create additional pins. Clone the map or program if you need to pin to multiple paths.
• The API of bpf2go generated programs has changed.

Bug fixes

• bpf2go now passes -O2 and -mcpu=v1 to clang by default which means that programs should load out of the box.
• Fix iterating an empty sockmap.
• .data..percpu sections present in newer kernel BTF are now handled correctly.
• Non-static constants work now thanks to more robust ELF relocation handling.
• Various fixes to feature probes

Features

• Map and Program have gained Unpin which removes a previous Pin.
• BTF-style map definitions can now declare nested maps.
• EnableStats allows collecting global run time stats for Programs.
• Some Maps can now be modified using the Batch* methods.
• Programs now have a Tag function which allows calculating the kernel "tag" of a program.
• There is now a folder with examples

Contributors

• Aditi Ghag
• Bryce Kahle
• Dmitry Savintsev
• Florian Lehner
• Iacopo Rozzo
• Kornilios Kourtis
• Lorenz Bauer
• Mattia Meleleo
• Mikko Ylinen
• Nate Sweet
• Takeru Hayasaka
• Timo Beckers
• Tobias Klauser
• Tom Payne

Thank you for your work!