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Date:      Sun, 22 Sep 2024 14:19:54 +0100
From:      Warner Losh <imp@bsdimp.com>
To:        Mark Johnston <markj@freebsd.org>
Cc:        Warner Losh <imp@freebsd.org>, src-committers@freebsd.org,  dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org,  Bram <bram@cbbg.nl>
Subject:   Re: git: 94567c8641e2 - main - netstat: Resolve duplicate "dropped-packets" key from libxo output
Message-ID:  <CANCZdfqAaAGc2ES8gtOX6Tx2WZsSthGdcSxUNtcZWKqYDwKzSQ@mail.gmail.com>
In-Reply-To: <Zu_xk5GoyC2ykk7Q@nuc>
References:  <202409201558.48KFwAEN048834@gitrepo.freebsd.org> <Zu_xk5GoyC2ykk7Q@nuc>

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[-- Attachment #1 --]
On Sun, Sep 22, 2024 at 11:29 AM Mark Johnston <markj@freebsd.org> wrote:

> On Fri, Sep 20, 2024 at 03:58:10PM +0000, Warner Losh wrote:
> > The branch main has been updated by imp:
> >
> > URL:
> https://cgit.FreeBSD.org/src/commit/?id=94567c8641e235763b5b2926416d89d36654cde1
> >
> > commit 94567c8641e235763b5b2926416d89d36654cde1
> > Author:     Bram <bram@cbbg.nl>
> > AuthorDate: 2024-07-23 08:57:42 +0000
> > Commit:     Warner Losh <imp@FreeBSD.org>
> > CommitDate: 2024-09-20 15:06:26 +0000
> >
> >     netstat: Resolve duplicate "dropped-packets" key from libxo output
> >
> >     The current libxo output uses the "dropped-packets" key for both
> incoming and
> >     outgoing packets. This commit distinguishes between the two by
> adding an "in"
> >     and "out" suffix. The original "dropped-packets" key is kept for
> backwards
> >     compatibility for now.
> >
> >     PR: 244589
> >     Reviewed by: imp, zlei
> >     Pull Request: https://github.com/freebsd/freebsd-src/pull/1331
> > ---
> >  usr.bin/netstat/if.c | 10 ++++++++--
> >  1 file changed, 8 insertions(+), 2 deletions(-)
> >
> > diff --git a/usr.bin/netstat/if.c b/usr.bin/netstat/if.c
> > index 172ea5324ccb..f0af785bce04 100644
> > --- a/usr.bin/netstat/if.c
> > +++ b/usr.bin/netstat/if.c
> > @@ -501,8 +501,11 @@ intpr(void (*pfunc)(char *), int af)
> >                   IFA_STAT(ipackets), link|network, 1);
> >               show_stat("lu", nerr_len, "received-errors",
> IFA_STAT(ierrors),
> >                   link, 1);
> > +             /* Below is kept for backwards compatibility. Will be
> removed in the future. */
> >               show_stat("lu", nerr_len, "dropped-packets",
> IFA_STAT(iqdrops),
> >                   link, 1);
> > +             show_stat("lu", nerr_len, "dropped-packets-in",
> IFA_STAT(iqdrops),
> > +                 link, 1);
>
> This breaks plain netstat output, causing a bunch of network tests to
> fail.  For instance, "netstat -Wf link -I re0" now prints an extra
> column.
>
> I think we should not bother with backwards compat unless libxo is
> emitting structured output.  This can be implemented using the "e"
> format modifier described in the xo_format modified, but I'm not sure
> how to plumb it through show_stat().
>
> Let's revert until this is fixed?
>

Works for me. I hadn't noticed before the push. Thanks for bringing it up.

Warner


> >               if (bflag)
> >                       show_stat("lu", nbyte_len, "received-bytes",
> >                           IFA_STAT(ibytes), link|network, 0);
> > @@ -516,7 +519,7 @@ intpr(void (*pfunc)(char *), int af)
> >               show_stat("NRSlu", nerr_len, "collisions",
> IFA_STAT(collisions),
> >                   link, 1);
> >               if (dflag)
> > -                     show_stat("LSlu", nerr_len, "dropped-packets",
> > +                     show_stat("LSlu", nerr_len, "dropped-packets-out",
> >                           IFA_STAT(oqdrops), link, 1);
> >               xo_emit("\n");
> >
> > @@ -705,8 +708,11 @@ loop:
> >           new->ift_ip - old->ift_ip, 1, 1);
> >       show_stat("lu", 5, "received-errors",
> >           new->ift_ie - old->ift_ie, 1, 1);
> > +     /* Below is kept for backwards compatibility. Will be removed in
> the future. */
> >       show_stat("lu", 5, "dropped-packets",
> >           new->ift_id - old->ift_id, 1, 1);
> > +     show_stat("lu", 5, "dropped-packets-in",
> > +         new->ift_id - old->ift_id, 1, 1);
> >       show_stat("lu", 10, "received-bytes",
> >           new->ift_ib - old->ift_ib, 1, 0);
> >       show_stat("lu", 10, "sent-packets",
> > @@ -718,7 +724,7 @@ loop:
> >       show_stat("NRSlu", 5, "collisions",
> >           new->ift_co - old->ift_co, 1, 1);
> >       if (dflag)
> > -             show_stat("LSlu", 5, "dropped-packets",
> > +             show_stat("LSlu", 5, "dropped-packets-out",
> >                   new->ift_od - old->ift_od, 1, 1);
> >       xo_close_instance("stats");
> >       xo_emit("\n");
>

[-- Attachment #2 --]
<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Sep 22, 2024 at 11:29 AM Mark Johnston &lt;<a href="mailto:markj@freebsd.org">markj@freebsd.org</a>&gt; wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Fri, Sep 20, 2024 at 03:58:10PM +0000, Warner Losh wrote:<br>
&gt; The branch main has been updated by imp:<br>
&gt; <br>
&gt; URL: <a href="https://cgit.FreeBSD.org/src/commit/?id=94567c8641e235763b5b2926416d89d36654cde1" rel="noreferrer" target="_blank">https://cgit.FreeBSD.org/src/commit/?id=94567c8641e235763b5b2926416d89d36654cde1</a><br>;
&gt; <br>
&gt; commit 94567c8641e235763b5b2926416d89d36654cde1<br>
&gt; Author:     Bram &lt;<a href="mailto:bram@cbbg.nl" target="_blank">bram@cbbg.nl</a>&gt;<br>
&gt; AuthorDate: 2024-07-23 08:57:42 +0000<br>
&gt; Commit:     Warner Losh &lt;imp@FreeBSD.org&gt;<br>
&gt; CommitDate: 2024-09-20 15:06:26 +0000<br>
&gt; <br>
&gt;     netstat: Resolve duplicate &quot;dropped-packets&quot; key from libxo output<br>
&gt;     <br>
&gt;     The current libxo output uses the &quot;dropped-packets&quot; key for both incoming and<br>
&gt;     outgoing packets. This commit distinguishes between the two by adding an &quot;in&quot;<br>
&gt;     and &quot;out&quot; suffix. The original &quot;dropped-packets&quot; key is kept for backwards<br>
&gt;     compatibility for now.<br>
&gt;     <br>
&gt;     PR: 244589<br>
&gt;     Reviewed by: imp, zlei<br>
&gt;     Pull Request: <a href="https://github.com/freebsd/freebsd-src/pull/1331" rel="noreferrer" target="_blank">https://github.com/freebsd/freebsd-src/pull/1331</a><br>;
&gt; ---<br>
&gt;  usr.bin/netstat/if.c | 10 ++++++++--<br>
&gt;  1 file changed, 8 insertions(+), 2 deletions(-)<br>
&gt; <br>
&gt; diff --git a/usr.bin/netstat/if.c b/usr.bin/netstat/if.c<br>
&gt; index 172ea5324ccb..f0af785bce04 100644<br>
&gt; --- a/usr.bin/netstat/if.c<br>
&gt; +++ b/usr.bin/netstat/if.c<br>
&gt; @@ -501,8 +501,11 @@ intpr(void (*pfunc)(char *), int af)<br>
&gt;                   IFA_STAT(ipackets), link|network, 1);<br>
&gt;               show_stat(&quot;lu&quot;, nerr_len, &quot;received-errors&quot;, IFA_STAT(ierrors),<br>
&gt;                   link, 1);<br>
&gt; +             /* Below is kept for backwards compatibility. Will be removed in the future. */<br>
&gt;               show_stat(&quot;lu&quot;, nerr_len, &quot;dropped-packets&quot;, IFA_STAT(iqdrops),<br>
&gt;                   link, 1);<br>
&gt; +             show_stat(&quot;lu&quot;, nerr_len, &quot;dropped-packets-in&quot;, IFA_STAT(iqdrops),<br>
&gt; +                 link, 1);<br>
<br>
This breaks plain netstat output, causing a bunch of network tests to<br>
fail.  For instance, &quot;netstat -Wf link -I re0&quot; now prints an extra<br>
column.<br>
<br>
I think we should not bother with backwards compat unless libxo is<br>
emitting structured output.  This can be implemented using the &quot;e&quot;<br>
format modifier described in the xo_format modified, but I&#39;m not sure<br>
how to plumb it through show_stat().<br>
<br>
Let&#39;s revert until this is fixed?<br></blockquote><div><br></div><div>Works for me. I hadn&#39;t noticed before the push. Thanks for bringing it up.</div><div><br></div><div>Warner</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
&gt;               if (bflag)<br>
&gt;                       show_stat(&quot;lu&quot;, nbyte_len, &quot;received-bytes&quot;,<br>
&gt;                           IFA_STAT(ibytes), link|network, 0);<br>
&gt; @@ -516,7 +519,7 @@ intpr(void (*pfunc)(char *), int af)<br>
&gt;               show_stat(&quot;NRSlu&quot;, nerr_len, &quot;collisions&quot;, IFA_STAT(collisions),<br>
&gt;                   link, 1);<br>
&gt;               if (dflag)<br>
&gt; -                     show_stat(&quot;LSlu&quot;, nerr_len, &quot;dropped-packets&quot;,<br>
&gt; +                     show_stat(&quot;LSlu&quot;, nerr_len, &quot;dropped-packets-out&quot;,<br>
&gt;                           IFA_STAT(oqdrops), link, 1);<br>
&gt;               xo_emit(&quot;\n&quot;);<br>
&gt;  <br>
&gt; @@ -705,8 +708,11 @@ loop:<br>
&gt;           new-&gt;ift_ip - old-&gt;ift_ip, 1, 1);<br>
&gt;       show_stat(&quot;lu&quot;, 5, &quot;received-errors&quot;,<br>
&gt;           new-&gt;ift_ie - old-&gt;ift_ie, 1, 1);<br>
&gt; +     /* Below is kept for backwards compatibility. Will be removed in the future. */<br>
&gt;       show_stat(&quot;lu&quot;, 5, &quot;dropped-packets&quot;,<br>
&gt;           new-&gt;ift_id - old-&gt;ift_id, 1, 1);<br>
&gt; +     show_stat(&quot;lu&quot;, 5, &quot;dropped-packets-in&quot;,<br>
&gt; +         new-&gt;ift_id - old-&gt;ift_id, 1, 1);<br>
&gt;       show_stat(&quot;lu&quot;, 10, &quot;received-bytes&quot;,<br>
&gt;           new-&gt;ift_ib - old-&gt;ift_ib, 1, 0);<br>
&gt;       show_stat(&quot;lu&quot;, 10, &quot;sent-packets&quot;,<br>
&gt; @@ -718,7 +724,7 @@ loop:<br>
&gt;       show_stat(&quot;NRSlu&quot;, 5, &quot;collisions&quot;,<br>
&gt;           new-&gt;ift_co - old-&gt;ift_co, 1, 1);<br>
&gt;       if (dflag)<br>
&gt; -             show_stat(&quot;LSlu&quot;, 5, &quot;dropped-packets&quot;,<br>
&gt; +             show_stat(&quot;LSlu&quot;, 5, &quot;dropped-packets-out&quot;,<br>
&gt;                   new-&gt;ift_od - old-&gt;ift_od, 1, 1);<br>
&gt;       xo_close_instance(&quot;stats&quot;);<br>
&gt;       xo_emit(&quot;\n&quot;);<br>
</blockquote></div></div>

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