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 PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sat, 17 Oct 2020 00:15:53 +0200 From: Andrew Lunn <andrew@...n.ch> To: Danielle Ratson <danieller@...dia.com> Cc: Jakub Kicinski <kuba@...nel.org>, Ido Schimmel <idosch@...sch.org>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "davem@...emloft.net" <davem@...emloft.net>, Jiri Pirko <jiri@...dia.com>, "f.fainelli@...il.com" <f.fainelli@...il.com>, "mkubecek@...e.cz" <mkubecek@...e.cz>, mlxsw <mlxsw@...dia.com>, Ido Schimmel <idosch@...dia.com>, "johannes@...solutions.net" <johannes@...solutions.net> Subject: Re: [PATCH net-next 1/6] ethtool: Extend link modes settings uAPI with lanes > Example: > - swp1 is a 200G port with 4 lanes. > - QSFP28 is plugged in. > - The user wants to select configuration of 100G speed using 2 lanes, 50G each. > > $ ethtool swp1 > Settings for swp1: > Supported ports: [ FIBRE Backplane ] > Supported link modes: 1000baseT/Full > 10000baseT/Full > 1000baseKX/Full > 10000baseKR/Full > 10000baseR_FEC > 40000baseKR4/Full > 40000baseCR4/Full > 40000baseSR4/Full > 40000baseLR4/Full > 25000baseCR/Full > 25000baseKR/Full > 25000baseSR/Full > 50000baseCR2/Full > 50000baseKR2/Full > 100000baseKR4/Full > 100000baseSR4/Full > 100000baseCR4/Full > 100000baseLR4_ER4/Full > 50000baseSR2/Full > 10000baseCR/Full > 10000baseSR/Full > 10000baseLR/Full > 10000baseER/Full > 50000baseKR/Full > 50000baseSR/Full > 50000baseCR/Full > 50000baseLR_ER_FR/Full > 50000baseDR/Full > 100000baseKR2/Full > 100000baseSR2/Full > 100000baseCR2/Full > 100000baseLR2_ER2_FR2/Full > 100000baseDR2/Full I'm not sure i fully understand all these different link modes, but i thought these 5 are all 100G using 2 lanes? So why cannot the user simply do ethtool -s swp1 advertise 100000baseKR2/Full and the driver can figure out it needs to use two lanes at 50G? Andrew
Powered by blists - more mailing lists