Re: [PATCH net v2 0/2] xsk: fix underflow issues in zerocopy xmit

[Jason Xing <kerneljasonxing@xxxxxxxxx>]

On Tue, Jul 22, 2025 at 9:51 PM Jason Xing <kerneljasonxing@xxxxxxxxx> wrote:
>
> From: Jason Xing <kernelxing@xxxxxxxxxxx>
>
> Fix two underflow issues around {stmmac_xdp|igb}_xmit_zc().
>
> Jason Xing (2):
>   stmmac: xsk: fix underflow of budget in zerocopy mode
>   igb: xsk: solve underflow of nb_pkts in zerocopy mode

Willem has pointed out it's technically not underflow but the negative
overflow[1]. So I decided to send a V3 patch with this modified.

[1]: https://lore.kernel.org/all/687f9d4cf0b14_2aa7cc29443@xxxxxxxxxxxxxxxxxxxxxx.notmuch/

Thanks,
Jason