linux-kernel - RE: [PATCH net 1/2] net: enetc: correct the statistics of rx bytes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <AM5PR04MB3139F0649E36BB4AB25B0B80884EA@AM5PR04MB3139.eurprd04.prod.outlook.com>
Date:   Fri, 2 Jun 2023 10:35:53 +0000
From:   Wei Fang <wei.fang@....com>
To:     Vladimir Oltean <vladimir.oltean@....com>
CC:     Claudiu Manoil <claudiu.manoil@....com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "ast@...nel.org" <ast@...nel.org>,
        "daniel@...earbox.net" <daniel@...earbox.net>,
        "hawk@...nel.org" <hawk@...nel.org>,
        "john.fastabend@...il.com" <john.fastabend@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH net 1/2] net: enetc: correct the statistics of rx bytes


> -----Original Message-----
> From: Vladimir Oltean <vladimir.oltean@....com>
> Sent: 2023年6月2日 18:32
> To: Wei Fang <wei.fang@....com>
> Cc: Claudiu Manoil <claudiu.manoil@....com>; davem@...emloft.net;
> edumazet@...gle.com; kuba@...nel.org; pabeni@...hat.com;
> ast@...nel.org; daniel@...earbox.net; hawk@...nel.org;
> john.fastabend@...il.com; netdev@...r.kernel.org;
> linux-kernel@...r.kernel.org
> Subject: Re: [PATCH net 1/2] net: enetc: correct the statistics of rx bytes
> 
> On Fri, Jun 02, 2023 at 05:46:58PM +0800, wei.fang@....com wrote:
> > From: Wei Fang <wei.fang@....com>
> >
> > The rx_bytes of struct net_device_stats should count the length of
> > ethernet frames excluding the FCS. However, there are two problems
> > with the rx_bytes statistics of the current enetc driver. one is that
> > the length of VLAN header is not counted if the VLAN extraction
> > feature is enabled. The other is that the length of L2 header is not
> > counted, because eth_type_trans() is invoked before updating rx_bytes
> > which will subtract the length of L2 header from skb->len.
> > BTW, the rx_bytes statistics of XDP path also have similar problem, I
> > will fix it in another patch.
> >
> > Fixes: a800abd3ecb9 ("net: enetc: move skb creation into
> > enetc_build_skb")
> > Signed-off-by: Wei Fang <wei.fang@....com>
> > ---
> 
> Reviewed-by: Vladimir Oltean <vladimir.oltean@....com>
> 
> By the way, you mangled Jakub's email (kuba@...nel.or) - I've fixed it up.

Yes, I realized this after sending the email. Thank you so much!