netdev - Re: [RFC bpf-next 4/7] bpf: implement devtx timestamp kfunc

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Message-ID: <CAKH8qBtjCB8CyR8Q+E7RXW_FYU1++H7rqQHhvz2sQYhMRChRvw@mail.gmail.com>
Date: Tue, 13 Jun 2023 11:39:56 -0700
From: Stanislav Fomichev <sdf@...gle.com>
To: Simon Horman <simon.horman@...igine.com>
Cc: bpf@...r.kernel.org, ast@...nel.org, daniel@...earbox.net, 
	andrii@...nel.org, martin.lau@...ux.dev, song@...nel.org, yhs@...com, 
	john.fastabend@...il.com, kpsingh@...nel.org, haoluo@...gle.com, 
	jolsa@...nel.org, netdev@...r.kernel.org
Subject: Re: [RFC bpf-next 4/7] bpf: implement devtx timestamp kfunc

On Tue, Jun 13, 2023 at 8:14 AM Simon Horman <simon.horman@...igine.com> wrote:
>
> On Mon, Jun 12, 2023 at 10:23:04AM -0700, Stanislav Fomichev wrote:
>
> ...
>
> > +/**
> > + * bpf_devtx_cp_timestamp - Read TX timestamp of the packet. Callable
> > + * only from the devtx-complete hook.
> > + * @ctx: devtx context pointer.
>
> Hi Stan,
>
> one minor nit: documentation of the timestamp parameter should go here.

Thanks, will add!

> > + *
> > + * Returns 0 on success or ``-errno`` on error.
> > + */
> > +__bpf_kfunc int bpf_devtx_cp_timestamp(const struct devtx_frame *ctx, __u64 *timestamp)
> > +{
> > +     return -EOPNOTSUPP;
> > +}
> > +
> >  __diag_pop();
>
> ...