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From: David Ahern <dsa@cumulusnetworks.com>
To: Ido Schimmel <idosch@mellanox.com>, Andy Gospodarek <andy@greyhouse.net>
Cc: Jiri Pirko <jiri@resnulli.us>,
	netdev@vger.kernel.org, davem@davemloft.net, eladr@mellanox.com,
	mlxsw@mellanox.com, Roopa Prabhu <roopa@cumulusnetworks.com>
Subject: Re: [patch net-next 12/15] ipv4: fib: Notify about nexthop status changes
Date: Wed, 8 Feb 2017 11:05:54 -0700	[thread overview]
Message-ID: <a21e02bf-e146-6a02-d1cc-229be629dcb0@cumulusnetworks.com> (raw)
In-Reply-To: <20170208153226.GA24185@splinter.mtl.com>

On 2/8/17 8:32 AM, Ido Schimmel wrote:
> In the case of multipath routes, if some of the nexthops can be
> reflected, then we do so, but periodically ask the kernel to try and
> resolve the others. Otherwise, these nexthops will never be resolved, as
> the kernel doesn't see the packets hitting the multipath route and
> therefore lacks the motivation to resolve its nexthops.

It should get the motivation once the neigh entry is cleaned up. That
can take a long time based on gc settings, but it can also happen from
the remote side if it sends an arp message.

  reply	other threads:[~2017-02-08 18:11 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-08 10:16 [patch net-next 00/15] mlxsw: Reflect nexthop status changes Jiri Pirko
2017-02-08 10:16 ` [patch net-next 01/15] mlxsw: spectrum_router: Nullify nexthop's neigh pointer Jiri Pirko
2017-02-08 10:16 ` [patch net-next 02/15] mlxsw: spectrum_router: Store nexthop groups in a hash table Jiri Pirko
2017-02-08 10:16 ` [patch net-next 03/15] mlxsw: spectrum_router: Store nexthops " Jiri Pirko
2017-02-08 10:16 ` [patch net-next 04/15] mlxsw: spectrum_router: Use nexthop's scope to set action type Jiri Pirko
2017-02-08 10:16 ` [patch net-next 05/15] mlxsw: spectrum_router: Add gateway indication to nexthop group Jiri Pirko
2017-02-08 10:16 ` [patch net-next 06/15] mlxsw: spectrum_router: Store routes in a more generic way Jiri Pirko
2017-02-08 10:16 ` [patch net-next 07/15] mlxsw: spectrum_router: Remove FIB info from FIB entry struct Jiri Pirko
2017-02-08 10:16 ` [patch net-next 08/15] mlxsw: spectrum_router: Refactor nexthop init routine Jiri Pirko
2017-02-08 10:16 ` [patch net-next 09/15] mlxsw: spectrum_router: More accurately set offload flag Jiri Pirko
2017-02-08 10:16 ` [patch net-next 10/15] mlxsw: spectrum_router: Determine offload status using generic function Jiri Pirko
2017-02-08 10:16 ` [patch net-next 11/15] mlxsw: spectrum_router: Use trap action only for some route types Jiri Pirko
2017-02-08 10:16 ` [patch net-next 12/15] ipv4: fib: Notify about nexthop status changes Jiri Pirko
2017-02-08 14:56   ` Andy Gospodarek
2017-02-08 15:32     ` Ido Schimmel
2017-02-08 18:05       ` David Ahern [this message]
2017-02-08 18:20         ` Ido Schimmel
2017-02-08 15:27   ` Andy Gospodarek
2017-02-08 10:16 ` [patch net-next 13/15] mlxsw: spectrum_router: Reflect " Jiri Pirko
2017-02-08 10:16 ` [patch net-next 14/15] mlxsw: spectrum_router: Don't reflect LINKDOWN nexthops Jiri Pirko
2017-02-08 10:16 ` [patch net-next 15/15] mlxsw: spectrum_router: Flush resources when RIF is deleted Jiri Pirko
2017-02-08 13:36 ` [patch net-next 14/15] mlxsw: spectrum_router: Don't reflect LINKDOWN nexthops Jiri Pirko
2017-02-08 20:28 ` [patch net-next 00/15] mlxsw: Reflect nexthop status changes David Miller
2017-02-08 20:43   ` David Miller
2017-02-08 20:58     ` Jiri Pirko
2017-02-08 21:00       ` David Miller
2017-02-08 20:59     ` Ido Schimmel

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