netdev - Re: Ethernet issue on imx6

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]

Date: Fri, 13 Oct 2023 17:51:20 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Miquel Raynal <miquel.raynal@...tlin.com>
Cc: Stephen Hemminger <stephen@...workplumber.org>,
	Wei Fang <wei.fang@....com>, Shenwei Wang <shenwei.wang@....com>,
	Clark Wang <xiaoning.wang@....com>,
	Russell King <linux@...linux.org.uk>, davem@...emloft.net,
	edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
	linux-imx@....com, netdev@...r.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>
Subject: Re: Ethernet issue on imx6

> # ethtool -S eth0
> NIC statistics:
>      tx_dropped: 0
>      tx_packets: 10118
>      tx_broadcast: 0
>      tx_multicast: 13
>      tx_crc_errors: 0
>      tx_undersize: 0
>      tx_oversize: 0
>      tx_fragment: 0
>      tx_jabber: 0
>      tx_collision: 0
>      tx_64byte: 130
>      tx_65to127byte: 61031
>      tx_128to255byte: 19
>      tx_256to511byte: 10
>      tx_512to1023byte: 5
>      tx_1024to2047byte: 14459
>      tx_GTE2048byte: 0
>      tx_octets: 26219280

These values come from the hardware. They should reflect what actually
made it onto the wire.

Do the values match what the link peer actually received?

Also, can you compare them to what iperf says it transmitted.

>From this, we can rule out the industrial cable, and should also be
able to rule out the receiver is the problem, not the transmitter.

     Andrew