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Message-ID: <34a1ca43d2f21428367237b4b693df6804bf716d.camel@redhat.com>
Subject: Re: [PATCH] Net:cache didn't flush when ipv6 rule changed
From: Paolo Abeni <pabeni@redhat.com>
To: Lena Wang =?UTF-8?Q?=28=E7=8E=8B=E5=A8=9C=29?= <Lena.Wang@mediatek.com>,
  "davem@davemloft.net" <davem@davemloft.net>, "kuba@kernel.org"
 <kuba@kernel.org>,  "dsahern@kernel.org" <dsahern@kernel.org>,
 "edumazet@google.com" <edumazet@google.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Shiming
	Cheng =?UTF-8?Q?=28=E6=88=90=E8=AF=97=E6=98=8E=29?=
	 <Shiming.Cheng@mediatek.com>
Date: Wed, 28 Feb 2024 08:34:49 +0100
In-Reply-To: <3fd5e055b5f56c596416f0cf37c6b47e77af0379.camel@mediatek.com>
References: <3efcbaf0872481d1a842eb9e18fa368b4b94d940.camel@mediatek.com>
	 <655ba4a1-4f73-4ef4-aff3-0b439e65a9c9@kernel.org>
	 <3fd5e055b5f56c596416f0cf37c6b47e77af0379.camel@mediatek.com>
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Hi,

On Wed, 2024-02-28 at 07:28 +0000, Lena Wang (=E7=8E=8B=E5=A8=9C) wrote:
> Dear David,
> Update the patch as below, thanks.
>=20
>=20
> From db01a40e45f51d00cb19e45a41507c97363d6ed8 Mon Sep 17 00:00:00 2001
> From: shiming cheng <shiming.cheng@mediatek.com>
> Date: Mon, 26 Feb 2024 20:17:58 +0800
> Subject: [PATCH] Net:cache didn't flush when ipv6 rule changed
>=20
> When changed from old rule&route configure to new one as below,
> ipv6 cache dst_entry did not change to new route table as no
> cache flush callback function, then forward to wrong out interface.
> When fib6_check dst_entry, the fib6_node version[fn_sernm] is
> always the same with socket dst_cookie, old cache dst_entry is
> always used and no chance to update.
>=20
> So we need to update fib6_node version when rule changed and
> flush cache to avoid dispatching a wrong interface.
>=20
> Signed-off-by: shiming cheng <shiming.cheng@mediatek.com>

You need to cc the netdev mailing list to allow up processing the
patch.

Please also include the target tree in the subject prefix ('net' in
this case), a suitable fixes tag and avoid sending patches in reply to
existing threads as it confuses our bot.

@David (out of sheer ignorace) could this the root cause for the fib6
self-tests sporadic failures?

Thanks,

Paolo