Date: Mon, 8 Feb 2021 15:32:37 +0100 From: Marek Zarychta <zarychtam@plan-b.pwste.edu.pl> To: mike tancsa <mike@sentex.net>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: option FIB_ALGO and dpdk_lpm4 Message-ID: <8696072a-dc25-8eff-04fa-4d1db13bf5cc@plan-b.pwste.edu.pl> In-Reply-To: <5670cd9a-cd10-2b89-1347-97a6c817c50f@sentex.net> References: <5670cd9a-cd10-2b89-1347-97a6c817c50f@sentex.net>
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From: Marek Zarychta <zarychtam@plan-b.pwste.edu.pl>
To: mike tancsa <mike@sentex.net>,
FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org>
Message-ID: <8696072a-dc25-8eff-04fa-4d1db13bf5cc@plan-b.pwste.edu.pl>
Subject: Re: option FIB_ALGO and dpdk_lpm4
References: <5670cd9a-cd10-2b89-1347-97a6c817c50f@sentex.net>
In-Reply-To: <5670cd9a-cd10-2b89-1347-97a6c817c50f@sentex.net>
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W dniu 08.02.2021 o=C2=A013:10, mike tancsa pisze:
> I have been setting up some tests to see if
>=20
> option FIB_ALGO and dpdk_lpm4.ko
>=20
> will help with my pkt forwarding needs and large routing tables. So far=
so good. But one thing I noticed, is that its very chatty to dmesg.=20
> eg
> alloc_nhgrp: new mpath group: num_nhops: 2
> compile_nhgrp: O: 2/2
> compile_nhgrp: OO[0]: 1/1 curr=3D1 slot_idx=3D0
> compile_nhgrp: OO[1]: 0/0 curr=3D1 slot_idx=3D1
> alloc_nhgrp: new mpath group: num_nhops: 2
> compile_nhgrp: O: 2/2
> compile_nhgrp: OO[0]: 1/1 curr=3D1 slot_idx=3D0
> compile_nhgrp: OO[1]: 0/0 curr=3D1 slot_idx=3D1
> alloc_nhgrp: new mpath group: num_nhops: 2
> compile_nhgrp: O: 2/2
> compile_nhgrp: OO[0]: 1/1 curr=3D1 slot_idx=3D0
> compile_nhgrp: OO[1]: 0/0 curr=3D1 slot_idx=3D1
>=20
> are these debugging messages that forgot to be turned off ? What do th=
ey mean ?
> Thanks for this work!
>=20
> 13.0-STABLE #11 stable/13-cc1352c1f-dirty
>=20
Thank you for sharing this Mike. Could you please reveal us how do you
feed your routing tables? Is net/bird{,2} or net/frr7 involved? Any
problems or hints to make the routing daemon working with new routing sta=
ck?
The new routing stack looks very promising, please let me also give this
way some appreciations to melifaro@ and other people who worked on it.
I was also trying to test it with legacy net/bird and multiple fib
tables, but I was early hit by: "KRT: Error sending route x.x.x.x/y to
kernel: Operation not supported"
Setting net.add_net.add_addr_allfibs=3D1addr_allfibs=3D1 changed it a bit=
,
but still some blackhole /32 routes seem to get rejected.
--=20
Marek Zarychta
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