Re: [PATCH v10 11/12] bpf: enable direct packet data write for xdp progs

On Tue, Jul 19, 2016 at 12:16:56PM -0700, Brenden Blanco wrote: > For forwarding to be effective, XDP programs should be allowed to > rewrite packet data. > > This requires that the drivers supporting XDP must all map the packet > memory as TODEVICE or BIDIRECTIONAL before invoking the program. >

[PATCH v10 11/12] bpf: enable direct packet data write for xdp progs

For forwarding to be effective, XDP programs should be allowed to rewrite packet data. This requires that the drivers supporting XDP must all map the packet memory as TODEVICE or BIDIRECTIONAL before invoking the program. Signed-off-by: Brenden Blanco --- kernel/bpf/verifier.c | 17