Re: [PATCH v5 bpf-next 00/11] net: Add support for XDP in egress path

On 5/18/20 3:06 PM, Daniel Borkmann wrote:

So given we neither call this hook on the skb path, nor XDP_TX nor
AF_XDP's TX
path, I was wondering also wrt the discussion with John if it makes
sense to
make this hook a property of the devmap _itself_, for example, to have a
default
BPF prog upon devmap creation or a dev-specific override that is passed
on map
update along with the dev. At least this would make it very clear where
this is
logically tied to and triggered from, and if needed (?) would provide
potentially
more flexibility on specifiying BPF progs to be called while also
solving your
use-case.

You lost me on the 'property of the devmap.' The programs need to be per
netdevice, and devmap is an array of devices. Can you elaborate?