From: Daniel Borkmann <daniel@iogearbox.net>
To: Ido Schimmel <idosch@idosch.org>
Cc: davem@davemloft.net, kuba@kernel.org, roopa@nvidia.com,
dsahern@kernel.org, m@lambda.lt, john.fastabend@gmail.com,
netdev@vger.kernel.org, bpf@vger.kernel.org
Subject: Re: [PATCH net-next 4/4] net, neigh: Add NTF_MANAGED flag for managed neighbor entries
Date: Wed, 13 Oct 2021 13:23:52 +0200 [thread overview]
Message-ID: <62dd9515-968a-451c-2da6-da0f03082ad2@iogearbox.net> (raw)
In-Reply-To: <YWauH/k8tfuLzsU5@shredder>
On 10/13/21 11:59 AM, Ido Schimmel wrote:
> On Wed, Oct 13, 2021 at 11:26:50AM +0200, Daniel Borkmann wrote:
>> On 10/12/21 6:31 PM, Ido Schimmel wrote:
>>> In our HW the nexthop table is squashed together with the neighbour
>>> table, so that it provides {netdev, MAC} and not {netdev, IP} with which
>>> the kernel performs another lookup in its neighbour table. We want to
>>> avoid situations where we perform multipathing between valid and failed
>>> nexthop (basically, fib_multipath_use_neigh=1), so we only program valid
>>> nexthop. But it means that nothing will trigger the resolution of the
>>> failed nexthops, thus the need to probe the neighbours.
>>
>> Makes sense. Given you have the setup/HW, if you have a chance to consolidate
>> the mlxsw logic with the new NTF_MANAGED entries, that would be awesome!
>
> Yes, I will take care of that
Perfect, thanks a lot!
next prev parent reply other threads:[~2021-10-13 11:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-11 12:12 [PATCH net-next 0/4] Managed Neighbor Entries Daniel Borkmann
2021-10-11 12:12 ` [PATCH net-next 1/4] net, neigh: Fix NTF_EXT_LEARNED in combination with NTF_USE Daniel Borkmann
2021-10-12 14:23 ` David Ahern
2021-10-11 12:12 ` [PATCH net-next 2/4] net, neigh: Enable state migration between NUD_PERMANENT and NTF_USE Daniel Borkmann
2021-10-12 14:25 ` David Ahern
2021-10-11 12:12 ` [PATCH net-next 3/4] net, neigh: Extend neigh->flags to 32 bit to allow for extensions Daniel Borkmann
2021-10-12 14:31 ` David Ahern
2021-10-12 14:46 ` Daniel Borkmann
2021-10-12 21:46 ` Jakub Kicinski
2021-10-11 12:12 ` [PATCH net-next 4/4] net, neigh: Add NTF_MANAGED flag for managed neighbor entries Daniel Borkmann
2021-10-12 14:51 ` David Ahern
2021-10-12 15:05 ` Daniel Borkmann
2021-10-12 15:26 ` Daniel Borkmann
2021-10-12 16:31 ` Ido Schimmel
2021-10-13 9:26 ` Daniel Borkmann
2021-10-13 9:59 ` Ido Schimmel
2021-10-13 11:23 ` Daniel Borkmann [this message]
2021-10-13 14:10 ` David Ahern
2022-01-31 20:43 ` Eric Dumazet
2022-01-31 21:17 ` Daniel Borkmann
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