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From: Brian Vazquez <brianvv@google.com>
To: David Ahern <dsahern@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>,
	Brian Vazquez <brianvv.kernel@gmail.com>,
	"David S . Miller" <davem@davemloft.net>,
	LKML <linux-kernel@vger.kernel.org>,
	netdev <netdev@vger.kernel.org>,
	David Ahern <dsa@cumulusnetworks.com>
Subject: Re: [PATCH] net: ipv6: fix __rt6_purge_dflt_routers when forwarding is not set on all ifaces
Date: Tue, 1 Sep 2020 08:50:18 -0700	[thread overview]
Message-ID: <CAMzD94TmFiJRfgLp44z1GQ1zzg2Zy7o2Oa9GTTCed0kj5tLdLg@mail.gmail.com> (raw)
In-Reply-To: <52832405-fa37-38fb-b8fb-d7bd7a0d1d52@gmail.com>

Hey David,

On Tue, Sep 1, 2020 at 7:57 AM David Ahern <dsahern@gmail.com> wrote:
>
> On 9/1/20 1:56 AM, Eric Dumazet wrote:
> > On Tue, Sep 1, 2020 at 8:58 AM Brian Vazquez <brianvv@google.com> wrote:
> >>
> >> The problem is exposed when the system has multiple ifaces and
> >> forwarding is enabled on a subset of them, __rt6_purge_dflt_routers will
> >> clean the default route on all the ifaces which is not desired.
> >>
> >> This patches fixes that by cleaning only the routes where the iface has
> >> forwarding enabled.
> >>
> >> Fixes: z ("net: ipv6: Fix processing of RAs in presence of VRF")
>
> are you sure that is a Fixes tag for this problem? looking at that
> change it only handles RA for tables beyond the main table; it does not
> change the logic of how many or which routes are purged.

That commit also added RT6_TABLE_HAS_DFLT_ROUTER so I thought that was
the commit needed to be mentioned. But probably it shouldn't?
Also Am I missing something or this is only called on on the sysctl path?

>
>
>

  reply	other threads:[~2020-09-01 15:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-01  6:57 Brian Vazquez
2020-09-01  7:56 ` Eric Dumazet
2020-09-01 14:57   ` David Ahern
2020-09-01 15:50     ` Brian Vazquez [this message]
2020-09-01 16:39       ` David Ahern
2020-09-01 15:33   ` Brian Vazquez
2020-09-01  8:20 ` Eric Dumazet
2020-09-01 15:43   ` Brian Vazquez

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