Re: [PATCH net-next 2/4] net: ipv4: Add a sysctl to set multipath hash seed

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On Thu, May 30, 2024 at 06:00:34PM -0700, Jakub Kicinski wrote:
> On Wed, 29 May 2024 13:18:42 +0200 Petr Machata wrote:
> > +fib_multipath_hash_seed - UNSIGNED INTEGER
> > +	The seed value used when calculating hash for multipath routes. Applies
> 
> nits..
> 
> For RSS we call it key rather than seed, is calling it seed well
> established for ECMP?

I have only seen documentation where it is called "seed". Examples:

Cumulus:
https://docs.nvidia.com/networking-ethernet-software/cumulus-linux-59/Layer-3/Routing/Equal-Cost-Multipath-Load-Sharing/#unique-hash-seed

Arista:
https://arista.my.site.com/AristaCommunity/s/article/hashing-for-l2-port-channels-and-l3-ecmp

Research from Fastly around load balancing (Section 6.3):
https://www.usenix.org/system/files/conference/nsdi18/nsdi18-araujo.pdf




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