netdev - Re: [PATCH net-next v3 2/2] Create netdev->neighbour association

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Message-ID: <20241014235547.11090-1-kuniyu@amazon.com>
Date: Mon, 14 Oct 2024 16:55:47 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: <kuniyu@...zon.com>
CC: <davem@...emloft.net>, <edumazet@...gle.com>, <gilad@...man.io>,
	<gnaaman@...venets.com>, <kuba@...nel.org>, <netdev@...r.kernel.org>,
	<pabeni@...hat.com>
Subject: Re: [PATCH net-next v3 2/2] Create netdev->neighbour association

From: Kuniyuki Iwashima <kuniyu@...zon.com>
Date: Mon, 14 Oct 2024 16:19:17 -0700
> From: Gilad Naaman <gnaaman@...venets.com>
> Date: Thu, 10 Oct 2024 12:01:25 +0000
> > diff --git a/Documentation/networking/net_cachelines/net_device.rst b/Documentation/networking/net_cachelines/net_device.rst
> > index 1b018ac35e9a..889501a16da2 100644
> > --- a/Documentation/networking/net_cachelines/net_device.rst
> > +++ b/Documentation/networking/net_cachelines/net_device.rst
> > @@ -186,4 +186,5 @@ struct dpll_pin*                    dpll_pin
> >  struct hlist_head                   page_pools
> >  struct dim_irq_moder*               irq_moder
> >  u64                                 max_pacing_offload_horizon
> > +struct hlist_head                   neighbours[3]
> 
> I think 2 should be enough as DECnet was removed two years ago.
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1202cdd66531
> 
> MPLS also does not support DECnet via RTA_VIA, see nla_get_via().

FYI, I posted a patch to remove NEIGH_DN_TABLE.
https://lore.kernel.org/netdev/20241014235216.10785-1-kuniyu@amazon.com/T/#u