On Thu, Mar 12, 2026 at 1:41 AM Jakub Kicinski [off-list ref] wrote:

On Wed, 11 Mar 2026 09:34:32 +0100 Eric Dumazet wrote:

quoted

Your series will heavily conflict with Simon's one

https://patchwork.kernel.org/project/netdevbpf/list/?series=1063486&state=%2A&archive=both

I suggest you rebase/retest/resend after we merge it.

Would it make sense to extend netdevsim and packetdrill to be able to
exercise scaling ratio a little more? Having it optionally clone the
skb and truesize += X would be trivial. IDK how many bugs this would
let us catch tho :(

Yes, I think we mentioned this at some point.
packetdrill uses tun device.
Adding a TUN ioctl() to control how many additional bytes are added to
skb->truesize after tun allocates an skb is doable.