Re: [PATCH net-next v3] net: af_packet: Use hrtimer to do the retire operation

From: Xin Zhao
Date: Sun Aug 17 2025 - 10:48:41 EST


On Sun, 2025-08-17 at 21:28 +0800, Willem wrote:

> Here we cannot use hrtimer_add_expires for the same reason you gave in
> the second version of the patch:
>
> > Additionally, I think we cannot avoid using ktime_get, as the retire
> > timeout for each block is not fixed. When there are a lot of network packets,
> > a block can retire quickly, and if we do not re-fetch the time, the timeout
> > duration may be set incorrectly.
>
> Is that right?
>
> Otherwise patch LGTM.


I'll think about whether there's a better way to implement the logic.

Additionally, regarding the previous email where you mentioned replacing retire_blk_tov
with the interval_ktime field, do we still need to make that change?
I noticed you didn't respond to my latest patch that replaces retire_blk_tov with
interval_ktime, and I'm wondering if we should make that change.
So we remain the retire_blk_tov field?


Thanks
Xin Zhao