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From: Jakub Kicinski <kuba@kernel.org>
To: Michael Chan <michael.chan@broadcom.com>
Cc: David Miller <davem@davemloft.net>,
	Netdev <netdev@vger.kernel.org>,
	olteanv@gmail.com
Subject: Re: [PATCH net-next v3 2/3] bnxt: count packets discarded because of netpoll
Date: Thu, 26 Aug 2021 12:18:21 -0700	[thread overview]
Message-ID: <20210826121821.2c926745@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> (raw)
In-Reply-To: <CACKFLimh-oLG7zNBgSCYqS1aJh5ivBJJK+5kkL1kqJU5NOHctA@mail.gmail.com>

On Thu, 26 Aug 2021 11:43:58 -0700 Michael Chan wrote:
> On Thu, Aug 26, 2021 at 6:12 AM Jakub Kicinski <kuba@kernel.org> wrote:
> > @@ -10646,11 +10653,15 @@ static void bnxt_get_ring_stats(struct bnxt *bp,
> >                 stats->multicast += BNXT_GET_RING_STATS64(sw, rx_mcast_pkts);
> >
> >                 stats->tx_dropped += BNXT_GET_RING_STATS64(sw, tx_error_pkts);
> > +
> > +               bsw_stats->rx.rx_netpoll_discards +=
> > +                       cpr->sw_stats.rx.rx_netpoll_discards;  
> 
> Can we just add these rx_netpoll_discards counters directly to
> stats->rx_dropped?  It looks simpler if we do it that way, right?

To make sure - are you saying that instead of adding

	struct bnxt_sw_stats	sw_stats_prev;

we should accumulate in net_stats_prev->rx_dropped, and have 
the ethtool counter only report the discards since last down/up?

Or to use the atomic counter on the netdev and never report 
in ethtool (since after patch 3 rx_dropped is a mix of reasons)?

  reply	other threads:[~2021-08-26 19:18 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-26 13:12 [PATCH net-next v3 0/3] bnxt: add rx discards stats for oom and netpool Jakub Kicinski
2021-08-26 13:12 ` [PATCH net-next v3 1/3] bnxt: reorder logic in bnxt_get_stats64() Jakub Kicinski
2021-08-26 13:12 ` [PATCH net-next v3 2/3] bnxt: count packets discarded because of netpoll Jakub Kicinski
2021-08-26 18:43   ` Michael Chan
2021-08-26 19:18     ` Jakub Kicinski [this message]
2021-08-26 21:17       ` Michael Chan
2021-08-27  1:15         ` Jakub Kicinski
2021-08-26 13:12 ` [PATCH net-next v3 3/3] bnxt: count discards due to memory allocation errors Jakub Kicinski

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