netdev - Re: [PATCH net-next v2] ipv4: avoid quadratic behavior in FIB insertion of common address

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Message-ID: <20241002141014.43115-1-kuniyu@amazon.com>
Date: Wed, 2 Oct 2024 07:10:14 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: <edumazet@...gle.com>
CC: <alexandre.ferrieux@...il.com>, <alexandre.ferrieux@...nge.com>,
	<netdev@...r.kernel.org>, <nicolas.dichtel@...nd.com>, <kuniyu@...zon.com>
Subject: Re: [PATCH net-next v2] ipv4: avoid quadratic behavior in FIB insertion of common address

From: Eric Dumazet <edumazet@...gle.com>
Date: Wed, 2 Oct 2024 10:38:11 +0200
> On Wed, Oct 2, 2024 at 1:14 AM Alexandre Ferrieux
> <alexandre.ferrieux@...il.com> wrote:
> >
> > Mix netns into all IPv4 FIB hashes to avoid massive collision when
> > inserting the same address in many netns.
> >
> > Signed-off-by: Alexandre Ferrieux <alexandre.ferrieux@...nge.com>
> > ---
> 
> Reviewed-by: Eric Dumazet <edumazet@...gle.com>
> 
> I guess we will have to use per-netns hash tables soon anyway.

Yes, it's on my stash :)

Reviewed-by: Kuniyuki Iwashima <kuniyu@...zon.com>