Re: [PATCH net] bnxt_en: Make PTP timestamp HWRM more silent

Breno Leitao
2024-01-25T14:53:14Z

On Thu, Jan 25, 2024 at 08:03:18PM +0530, Pavan Chebbi wrote:
> On Thu, Jan 25, 2024 at 7:11 PM Breno Leitao <leitao@debian.org> wrote:
> >
> > commit 056bce63c469 ("bnxt_en: Make PTP TX timestamp HWRM query silent")
> > changed a netdev_err() to netdev_WARN_ONCE().
> >
> > netdev_WARN_ONCE() is it generates a kernel WARNING, which is bad, for
> > the following reasons:
> >
> > * You do not a kernel warning if the firmware queries are late
> > * In busy networks, timestamp query failures fairly regularly
> > * A WARNING message doesn't bring much value, since the code path
> > is clear.
> > (This was discussed in-depth in [1])
> >
> > Transform the netdev_WARN_ONCE() into a netdev_warn_once(), and print a
> > more well-behaved message, instead of a full WARN().
> >
> > bnxt_en 0000:67:00.0 eth0: TS query for TX timer failed rc = fffffff5
> >
> > [1] Link: https://lore.kernel.org/all/ZbDj%2FFI4EJezcfd1@gmail.com/
> > Signed-off-by: Breno Leitao <leitao@debian.org>
>
> LGTM, however, you may still need to add a proper fixes tag.

Thanks. I didn't include a fix tag because it is not a fix per se, but,
I can easily send a v2 if this is needed.