Re: [PATCH net-next 2/2] act_bpf: add initial eBPF support for actions

[Alexei Starovoitov <ast@plumgrid.com>]

On 3/20/15 7:11 AM, Daniel Borkmann wrote:
> This work extends the "classic" BPF programmable tc action by extending
> its scope also to native eBPF code!
>
> Together with commit e2e9b6541dd4 ("cls_bpf: add initial eBPF support
> for programmable classifiers") this adds the facility to implement fully
> flexible classifier and actions for tc that can be implemented in a C
> subset in user space, "safely" loaded into the kernel, and being run in
> native speed when JITed.
>
> Also, since eBPF maps can be shared between eBPF programs, it offers the
> possibility that cls_bpf and act_bpf can share data 1) between themselves
> and 2) between user space applications. That means that, f.e. customized
> runtime statistics can be collected in user space, but also more importantly
> classifier and action behaviour could be altered based on map input from
> the user space application.
>
> For the remaining details on the workflow and integration, see the cls_bpf
> commit e2e9b6541dd4. Preliminary iproute2 part can be found under [1].
>
>    [1] http://git.breakpoint.cc/cgit/dborkman/iproute2.git/log/?h=ebpf-act
>
> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
> Cc: Jamal Hadi Salim <jhs@mojatatu.com>
> Cc: Jiri Pirko <jiri@resnulli.us>

Acked-by: Alexei Starovoitov <ast@plumgrid.com>