Date: Tue, 5 Apr 2011 15:43:11 +0000 From: "Li, Qing" <qing.li@bluecoat.com> To: Ingo Flaschberger <if@freebsd.org> Cc: Nikolay Denev <ndenev@gmail.com>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: RE: Routing enhancement - reduce routing table locking Message-ID: <B143A8975061C446AD5E29742C531723025C17@PWSVL-EXCMBX-01.internal.cacheflow.com> In-Reply-To: <alpine.LRH.2.00.1104051731080.2152@filebunker.xip.at> References: <alpine.LRH.2.00.1104050303140.2152@filebunker.xip.at> <E0E87D94-3DE3-4884-8FBB-CC778486C364@gmail.com> <alpine.LRH.2.00.1104051615160.2152@filebunker.xip.at>, <alpine.LRH.2.00.1104051731080.2152@filebunker.xip.at>
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I see,=0A= =0A= What you are saying is the "rtalloc()" call does not have an indicator whet= her it should be searching=0A= for an interface route or not. =0A= =0A= In the case when RADIX_MPATH is enabled, in_lltable_rtcheck() needs to walk= the ECMP route chain=0A= to find an interface route.=0A= =0A= yes ?=0A= =0A= -- Qing=0A= =0A= ________________________________________=0A= From: owner-freebsd-net@freebsd.org [owner-freebsd-net@freebsd.org] on beha= lf of Ingo Flaschberger [if@freebsd.org]=0A= Sent: Tuesday, April 05, 2011 8:31 AM=0A= Cc: Nikolay Denev; freebsd-net@freebsd.org=0A= Subject: Re: Routing enhancement - reduce routing table locking=0A= =0A= >> Can you say something more about :=0A= >> "implement some multipath changes to use a direct attached=0A= >> interface route and a real route, used some OpenBSD code"=0A= >>=0A= >> I've looked at the patch but it's not obvious to me.=0A= >>=0A= >> P.S.: I've just saw your reply to kern/155772 and was wondering if this= =0A= >> patch can help.=0A= >=0A= > regarding kern/155772:=0A= > at stock 8.2 FreeBSD the system panics after ifconfig down / ifconfig up = /=0A= > ifconfig down with 1 route and 1 interface route (multipath).=0A= >=0A= > Also there are problems with arp, due wrong multipath route selection=0A= > (if the decision is already made that the route should go the direct way,= the=0A= > route and not the interface route is choosen, depends on which route was= =0A= > first in the tree).=0A= =0A= see "in_lltable_rtcheck"=0A= =0A= > And finally, there are problems when adding / deleteing routes.=0A= >=0A= > example that does not work:=0A= > ifconfig em0 192.168.0.1/24=0A= > ifconfig em1 10.0.0.1/24=0A= > route add 10.0.0.0/24 192.168.0.2=0A= >=0A= > example that currently works with 8.2:=0A= > ifconfig em0 192.168.0.1/24=0A= > ifconfig em1 10.0.0.1/24=0A= > route add 172.16.0.0/24 192.168.0.2=0A= > route add 172.16.0.0/24 10.0.0.2=0A= >=0A= > Kind regards,=0A= > Ingo Flaschberger=0A=
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