netdev - Re: [PATCH net-next 1/2] mlxsw: spectrum_router: Offload blackhole routes

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Date:   Fri, 8 Feb 2019 17:05:07 +0000
From:   Ido Schimmel <idosch@...lanox.com>
To:     David Ahern <dsahern@...il.com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        Jiri Pirko <jiri@...lanox.com>,
        Alexander Petrovskiy <alexpe@...lanox.com>,
        mlxsw <mlxsw@...lanox.com>
Subject: Re: [PATCH net-next 1/2] mlxsw: spectrum_router: Offload blackhole
 routes

On Fri, Feb 08, 2019 at 08:24:49AM -0800, David Ahern wrote:
> On 2/7/19 11:34 PM, Ido Schimmel wrote:
> > I assume that user can't put blackhole and normal nexthops in the same
> > group?
> > 
> 
> I allow a nexthop group to reference a nexthop that is a blackhole, but
> the group can only contain the one entry. That allows multipath routes
> to toggle between a blackhole and a real spec.

Good, thanks. I was afraid users will be able to configure a nexthop
group that will randomly drop flows :)