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From: David Miller <davem@davemloft.net>
To: idosch@idosch.org
Cc: netdev@vger.kernel.org, jiri@mellanox.com, dsahern@gmail.com,
	alexpe@mellanox.com, mlxsw@mellanox.com, idosch@mellanox.com
Subject: Re: [PATCH net-next v2 00/16] mlxsw: Improve IPv6 route insertion rate
Date: Tue, 18 Jun 2019 09:46:00 -0700 (PDT)
Message-ID: <20190618.094600.427814233009639292.davem@davemloft.net> (raw)
In-Reply-To: <20190618151258.23023-1-idosch@idosch.org>

From: Ido Schimmel <idosch@idosch.org>
Date: Tue, 18 Jun 2019 18:12:42 +0300

> Unlike IPv4, an IPv6 multipath route in the kernel is composed from
> multiple sibling routes, each representing a single nexthop.
> 
> Therefore, an addition of a multipath route with N nexthops translates
> to N in-kernel notifications. This is inefficient for device drivers
> that need to program the route to the underlying device. Each time a new
> nexthop is appended, a new nexthop group needs to be constructed and the
> old one deleted.
> 
> This patchset improves the situation by sending a single notification
> for a multipath route addition / deletion instead of one per-nexthop.
> When adding thousands of multipath routes with 16 nexthops, I measured
> an improvement of about x10 in the insertion rate.
 ...

Series applied, thanks everyone.

      parent reply index

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-18 15:12 Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 01/16] netlink: Document all fields of 'struct nl_info' Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 02/16] netlink: Add field to skip in-kernel notifications Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 03/16] ipv6: Extend notifier info for multipath routes Ido Schimmel
2019-06-18 15:26   ` David Ahern
2019-06-18 15:12 ` [PATCH net-next v2 04/16] mlxsw: spectrum_router: Ignore IPv6 multipath notifications Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 05/16] netdevsim: " Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 06/16] ipv6: Add IPv6 multipath notifications for add / replace Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 07/16] ipv6: Add IPv6 multipath notification for route delete Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 08/16] mlxsw: spectrum_router: Remove processing of IPv6 append notifications Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 09/16] mlxsw: spectrum_router: Prepare function to return errors Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 10/16] mlxsw: spectrum_router: Pass multiple routes to work item Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 11/16] mlxsw: spectrum_router: Adjust IPv6 replace logic to new notifications Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 12/16] mlxsw: spectrum_router: Pass array of routes to route handling functions Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 13/16] mlxsw: spectrum_router: Add / delete multiple IPv6 nexthops Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 14/16] mlxsw: spectrum_router: Create IPv6 multipath routes in one go Ido Schimmel
2019-06-18 15:12 ` [PATCH net-next v2 15/16] ipv6: Stop sending in-kernel notifications for each nexthop Ido Schimmel
2019-06-18 15:28   ` David Ahern
2019-06-18 15:12 ` [PATCH net-next v2 16/16] selftests: mlxsw: Add a test for FIB offload indication Ido Schimmel
2019-06-18 16:46 ` David Miller [this message]

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