On Fri, Feb 5, 2021 at 5:42 PM Xie He <[email protected]> wrote: > > The "dev_has_header" function, recently added in > commit d549699048b4 ("net/packet: fix packet receive on L3 devices > without visible hard header"), > is more accurate as criteria for determining whether a device exposes > the LL header to upper layers, because in addition to dev->header_ops, > it also checks for dev->header_ops->create. > > When transmitting an skb on a device, dev_hard_header can be called to > generate an LL header. dev_hard_header will only generate a header if > dev->header_ops->create is present. > > Signed-off-by: Xie He <[email protected]>
Acked-by: Willem de Bruijn <[email protected]> Indeed, existence of dev->header_ops->create is the deciding factor. Thanks Xie.
