From: Eric Dumazet <eric.dumazet@gmail.com>
To: Denis Kirjanov <dkirjanov@kernel.org>
Cc: netdev@vger.kernel.org, David Miller <davem@davemloft.net>,
Joe Perches <joe@perches.com>,
Ben Hutchings <bhutchings@solarflare.com>,
Jeff Garzik <jgarzik@redhat.com>
Subject: Re: [PATCH -next] sundance: Add initial ethtool stats support
Date: Wed, 13 Oct 2010 08:33:57 +0200 [thread overview]
Message-ID: <1286951637.2703.141.camel@edumazet-laptop> (raw)
In-Reply-To: <4CB54C4F.5070205@kernel.org>
Le mercredi 13 octobre 2010 à 10:06 +0400, Denis Kirjanov a écrit :
> @@ -1494,13 +1506,23 @@ static struct net_device_stats *get_stats(struct net_device *dev)
> dev->stats.rx_missed_errors += ioread8(ioaddr + RxMissed);
> dev->stats.tx_packets += ioread16(ioaddr + TxFramesOK);
> dev->stats.rx_packets += ioread16(ioaddr + RxFramesOK);
> - dev->stats.collisions += ioread8(ioaddr + StatsLateColl);
> - dev->stats.collisions += ioread8(ioaddr + StatsMultiColl);
> - dev->stats.collisions += ioread8(ioaddr + StatsOneColl);
> dev->stats.tx_carrier_errors += ioread8(ioaddr + StatsCarrierError);
> - ioread8(ioaddr + StatsTxDefer);
> - for (i = StatsTxDefer; i <= StatsMcastRx; i++)
> - ioread8(ioaddr + i);
> +
> + np->xstats.tx_multiple_collisions += ioread8(ioaddr + StatsMultiColl);
> + np->xstats.tx_single_collisions += ioread8(ioaddr + StatsOneColl);
> + np->xstats.tx_late_collisions += ioread8(ioaddr + StatsLateColl);
> + dev->stats.collisions += np->xstats.tx_multiple_collisions
> + + np->xstats.tx_single_collisions
> + + np->xstats.tx_late_collisions;
Oh well..., really ?
Each time we are calling get_stats(), you do
dev->stats.collisions += (number of accumulated collisions since device
is up)
instead of
dev->stats.collisions += (number of accumulated collisions since last
time we read counters)
Can you see the problem ?
next prev parent reply other threads:[~2010-10-13 6:34 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-09 9:53 [PATCH -next] sundance: Add initial ethtool stats support Denis Kirjanov
2010-10-09 12:17 ` [PATCH net-next] sundance: get_stats proper locking Eric Dumazet
2010-10-09 16:24 ` David Miller
2010-10-09 12:33 ` [PATCH -next] sundance: Add initial ethtool stats support Eric Dumazet
2010-10-09 13:27 ` Ben Hutchings
2010-10-09 14:40 ` Denis Kirjanov
2010-10-09 19:41 ` Denis Kirjanov
2010-10-09 21:48 ` Jeff Garzik
2010-10-12 18:51 ` David Miller
2010-10-12 20:36 ` Denis Kirjanov
2010-10-12 20:57 ` Joe Perches
2010-10-13 6:06 ` Denis Kirjanov
2010-10-13 6:33 ` Eric Dumazet [this message]
2010-10-13 7:02 ` Denis Kirjanov
2010-10-13 10:28 ` Denis Kirjanov
2010-10-13 10:36 ` Eric Dumazet
2010-10-13 10:56 ` Denis Kirjanov
2010-10-13 19:44 ` Eric Dumazet
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