netdev - Re: [PATCH net-next v2 8/9] microchip: lan865x: add driver support for Microchip's LAN865X MACPHY

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: Thu, 2 Nov 2023 13:39:00 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Ramón Nordin Rodriguez <ramon.nordin.rodriguez@...roamp.se>
Cc: Parthiban Veerasooran <Parthiban.Veerasooran@...rochip.com>,
	davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
	corbet@....net, steen.hegelund@...rochip.com, rdunlap@...radead.org,
	horms@...nel.org, casper.casan@...il.com, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, horatiu.vultur@...rochip.com,
	Woojung.Huh@...rochip.com, Nicolas.Ferre@...rochip.com,
	UNGLinuxDriver@...rochip.com, Thorsten.Kummermehr@...rochip.com
Subject: Re: [PATCH net-next v2 8/9] microchip: lan865x: add driver support
 for Microchip's LAN865X MACPHY

> 	spe1: ethernet@1{
> 		compatible = "microchip,lan865x";
> 		reg = <1>;
> 		interrupt-parent = <&gpio5>;
> 		interrupts = <0 IRQ_TYPE_EDGE_FALLING>;
> 		spi-max-frequency = <50000000>;

That is a pretty high frequency. It is actually running at that speed?

Have you tried lower speed?

> 		oa-tc6{
> 			#address-cells = <1>;
> 			#size-cells = <0>;
> 			oa-cps = <32>;
> 			oa-prote;
> 			oa-dprac;
> 		};
> 	};
> };
> 
> With this setup I'm getting a maximum throughput of about 90kB/s.
> If I increase the chunk size / oa-cps to 64 I get a might higher
> throughput ~900kB/s, but after 0-2s I get dump below (or similar).

Is this tcp traffic? Lost packets will have a big impact. You might
want to look at the link peer with tcpdump and look for retries. Also,
look if there are frames with bad checksums.

     Andrew