netdev - Re: [PATCH] Check for SKBTX_HW

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Message-ID: <CAFcVECLwc-34+yRE5t6qHs75jM_uLPkYqmxmQEfuP=dQLTR+8w@mail.gmail.com>
Date:   Wed, 13 Mar 2019 11:10:15 +0530
From:   Harini Katakam <harinik@...inx.com>
To:     Paul Thomas <pthomas8589@...il.com>
Cc:     "Keller, Jacob E" <jacob.e.keller@...el.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] Check for SKBTX_HW_TSTAMP in macb driver

Hi Paul, Jake,
On Wed, Mar 13, 2019 at 5:01 AM Paul Thomas <pthomas8589@...il.com> wrote:
>
> On Tue, Mar 12, 2019 at 7:07 PM Keller, Jacob E
> <jacob.e.keller@...el.com> wrote:
> >
> >
> >
> > > -----Original Message-----
> > > From: Paul Thomas [mailto:pthomas8589@...il.com]
> > > Sent: Tuesday, March 12, 2019 3:05 PM
> > > To: Keller, Jacob E <jacob.e.keller@...el.com>
> > > Cc: netdev@...r.kernel.org
> > > Subject: Re: [PATCH] Check for SKBTX_HW_TSTAMP in macb driver
> > >
> > > Hi Jake, thanks for all the help and for looking at this!
> > >
> > > >
> > > > You have two conditionals inside, and I misread where you were doing the checking
> > > of the SKBTX_HW_TSTAMP flag.
> > > >
> > > > I would do the following :
> > > >
> > > > if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HWTSTAMP) &&
> > > >     gem_ptp_do_txstamp(queue, skb, desc)) {

Thanks for looking into this. Shouldn't this be:
 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HWTSTAMP) &&
      (gem_ptp_do_txstamp(queue, skb, desc) == 0)) {

Regards,
Harini