From: "Jiawen Wu" <jiawenwu@trustnetic.com>
To: "'Jakub Kicinski'" <kuba@kernel.org>
Cc: <davem@davemloft.net>, <edumazet@google.com>, <pabeni@redhat.com>,
<rmk+kernel@armlinux.org.uk>, <andrew@lunn.ch>,
<netdev@vger.kernel.org>, <mengyuanlou@net-swift.com>,
<duanqiangwen@net-swift.com>
Subject: RE: [PATCH net v2 1/4] net: wangxun: fix the incorrect display of queue number in statistics
Date: Thu, 9 May 2024 10:39:22 +0800 [thread overview]
Message-ID: <009c01daa1ba$1986bae0$4c9430a0$@trustnetic.com> (raw)
In-Reply-To: <20240430185951.5005ff96@kernel.org>
On Wed, May 1, 2024 10:00 AM, Jakub Kicinski wrote:
> On Mon, 29 Apr 2024 18:25:16 +0800 Jiawen Wu wrote:
> > When using ethtool -S to print hardware statistics, the number of
> > Rx/Tx queues printed is greater than the number of queues actually
> > used.
>
> The ethtool API fetches the number of stats and the values in an
> unsafe, non-atomic way. If someone increases the number of queues
> while someone else is fetching the stats the memory of the latter
> process will get corrupted. The code is correct as is.
So should we keep the old code, showing stats with fixed maximum
number of queues?
next prev parent reply other threads:[~2024-05-09 2:43 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-29 10:25 [PATCH net v2 0/4] Wangxun fixes Jiawen Wu
2024-04-29 10:25 ` [PATCH net v2 1/4] net: wangxun: fix the incorrect display of queue number in statistics Jiawen Wu
2024-05-01 1:59 ` Jakub Kicinski
2024-05-09 2:39 ` Jiawen Wu [this message]
2024-05-09 15:19 ` Jakub Kicinski
2024-04-29 10:25 ` [PATCH net v2 2/4] net: wangxun: fix to change Rx features Jiawen Wu
2024-05-02 8:36 ` Simon Horman
2024-05-10 1:57 ` Jiawen Wu
2024-04-29 10:25 ` [PATCH net v2 3/4] net: wangxun: match VLAN CTAG and STAG features Jiawen Wu
2024-04-29 16:07 ` Sai Krishna Gajula
2024-05-02 8:29 ` Simon Horman
2024-04-29 10:25 ` [PATCH net v2 4/4] net: txgbe: fix to control VLAN strip Jiawen Wu
2024-05-02 9:25 ` Simon Horman
2024-05-09 3:08 ` Jiawen Wu
2024-05-09 13:38 ` Simon Horman
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