* Re: Cannot change hash functions or use static not random keys on E810 [not found] <CAPYuOdx2jPwOWYPzo5z-xWQtEmNHO==pAKH63xxaOtG6JbGxdw@mail.gmail.com> @ 2022-08-05 14:00 ` Maciej Wachowski 2022-08-06 0:55 ` Jakub Kicinski 0 siblings, 1 reply; 2+ messages in thread From: Maciej Wachowski @ 2022-08-05 14:00 UTC (permalink / raw) To: netdev I am not able to change hash function on Intel E810 card using ethtool: RSS hash function: toeplitz: on xor: off crc32: off root@my_server:~# ethtool -X ens802f0 hfunc xor Cannot set RX flow hash configuration: Operation not supported I also tried with newest ethtool (5.18) and newest ice driver (1.9.11) but with no success. Do you have any information on how to change hash func using ethtool or if it is possible? Best regards, Maciej -- ------------------------------- This document contains material that is confidential in CodiLime Sp. z o.o. DO NOT PRINT. DO NOT COPY. DO NOT DISTRIBUTE. If you are not the intended recipient of this document, be aware that any use, review, retransmission, distribution, reproduction or any action taken in reliance upon this message is strictly prohibited. If you received this in error, please contact the sender and help@codilime.com <mailto:help@codilime.com>. Return the paper copy, delete the material from all computers and storage media. ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Cannot change hash functions or use static not random keys on E810 2022-08-05 14:00 ` Cannot change hash functions or use static not random keys on E810 Maciej Wachowski @ 2022-08-06 0:55 ` Jakub Kicinski 0 siblings, 0 replies; 2+ messages in thread From: Jakub Kicinski @ 2022-08-06 0:55 UTC (permalink / raw) To: Maciej Wachowski; +Cc: netdev On Fri, 5 Aug 2022 16:00:43 +0200 Maciej Wachowski wrote: > I am not able to change hash function on Intel E810 card using ethtool: > > RSS hash function: > toeplitz: on > xor: off > crc32: off > > root@my_server:~# ethtool -X ens802f0 hfunc xor > Cannot set RX flow hash configuration: Operation not supported > > I also tried with newest ethtool (5.18) and newest ice driver (1.9.11) > but with no success. > Do you have any information on how to change hash func using ethtool > or if it is possible? ETH_RSS_HASH_XOR is usually implemented by devices doing hashing in microcode because it requires fewer cycles. Looking at the driver ice (E810) only supports Toeplitz which is probably the best choice of the 3, anyway. ^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-08-05 14:00 ` Cannot change hash functions or use static not random keys on E810 Maciej Wachowski
2022-08-06 0:55 ` Jakub Kicinski
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