From: "Peter Nørlund" <pch-chEQUL3jiZBWk0Htik3J/w@public.gmane.org>
To: David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kuznet-v/Mj1YrvjDBInbfyfbPRSQ@public.gmane.org,
jmorris-gx6/JNMH7DfYtjvyW6yDsg@public.gmane.org,
yoshfuji-VfPWfsRibaP+Ru+s062T9g@public.gmane.org,
kaber-dcUjhNyLwpNeoWH0uzbU5w@public.gmane.org,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
roopa-qUQiAmfTcIp+XZJcv9eMoEEOCMrvLtNR@public.gmane.org,
sfeldma-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org,
nicolas.dichtel-pdR9zngts4EAvxtiuMwx3w@public.gmane.org,
tgraf-G/eBtMaohhA@public.gmane.org,
jbenc-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
Subject: Re: [PATCH v2 net-next 0/3] ipv4: Hash-based multipath routing
Date: Sat, 29 Aug 2015 22:31:15 +0200 [thread overview]
Message-ID: <20150829223115.523553db@tyr> (raw)
In-Reply-To: <20150829.131429.360433621593751136.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
On Sat, 29 Aug 2015 13:14:29 -0700 (PDT)
David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org> wrote:
> From: pch-chEQUL3jiZBWk0Htik3J/w@public.gmane.org
> Date: Fri, 28 Aug 2015 22:00:47 +0200
>
> > When the routing cache was removed in 3.6, the IPv4 multipath
> > algorithm changed from more or less being destination-based into
> > being quasi-random per-packet scheduling. This increases the risk
> > of out-of-order packets and makes it impossible to use multipath
> > together with anycast services.
>
> Don't even try to be fancy.
>
> Simply kill the round-robin stuff off completely, and make hash based
> routing the one and only mode, no special configuration stuff
> necessary.
I like the sound of that! Just to be clear - are you telling me to
stick with L3 and skip the L4 part?
>
> This puts ipv4 in line with ipv6, and nobody cares about the existing
> round robin behavior at all.
>
> Thanks.
next prev parent reply other threads:[~2015-08-29 20:31 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-28 20:00 [PATCH v2 net-next 0/3] ipv4: Hash-based multipath routing pch
[not found] ` <1440792050-2109-1-git-send-email-pch-chEQUL3jiZBWk0Htik3J/w@public.gmane.org>
2015-08-28 20:00 ` [PATCH v2 net-next 1/3] ipv4: Lock-less per-packet multipath pch-chEQUL3jiZBWk0Htik3J/w
2015-08-28 20:00 ` [PATCH v2 net-next 2/3] ipv4: L3 and L4 hash-based multipath routing pch-chEQUL3jiZBWk0Htik3J/w
2015-08-30 22:48 ` Tom Herbert
2015-08-29 20:14 ` [PATCH v2 net-next 0/3] ipv4: Hash-based " David Miller
[not found] ` <20150829.131429.360433621593751136.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2015-08-29 20:31 ` Peter Nørlund [this message]
2015-08-29 20:46 ` David Miller
[not found] ` <20150829.134628.1013990034021542524.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2015-08-29 20:55 ` Scott Feldman
2015-08-29 20:59 ` Tom Herbert
2015-08-30 21:28 ` Peter Nørlund
2015-08-30 22:29 ` Tom Herbert
2015-08-31 9:02 ` Thomas Graf
2015-08-28 20:00 ` [PATCH v2 net-next 3/3] ipv4: ICMP packet inspection for L3 multipath pch
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