Hi Akihiko, On Tue, Dec 12, 2023 at 12:05 AM Akihiko Odaki <akihiko.odaki@xxxxxxxxxx> wrote: > [...] > --- > > I'm working on a new feature that aids virtio-net implementations using > tuntap virtual network device. You can see [1] for details, but > basically it's to extend BPF_PROG_TYPE_SOCKET_FILTER to report four more > bytes. AFAICT, [1] adds a new program type, which is really hard to ship. However, you mentioned it is basically "extend BPF_PROG_TYPE_SOCKET_FILTER to report four more bytes", which confuses me. Can we achieve the same goal by extending BPF_PROG_TYPE_SOCKET_FILTER (without adding a new program type)? Does this require extending __sk_buff, which is also not an option any more? Thanks, Song
