netdev - Re: [PATCH net] mpls: fix warning with multi-label encap

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Date:   Sun, 09 Jun 2019 13:27:11 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     gwilkie@...tta.att-mail.com
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net] mpls: fix warning with multi-label encap

From: George Wilkie <gwilkie@...tta.att-mail.com>
Date: Fri,  7 Jun 2019 11:49:41 +0100

> If you configure a route with multiple labels, e.g.
>   ip route add 10.10.3.0/24 encap mpls 16/100 via 10.10.2.2 dev ens4
> A warning is logged:
>   kernel: [  130.561819] netlink: 'ip': attribute type 1 has an invalid
>   length.
> 
> This happens because mpls_iptunnel_policy has set the type of
> MPLS_IPTUNNEL_DST to fixed size NLA_U32.
> Change it to a minimum size.
> nla_get_labels() does the remaining validation.
> 
> Signed-off-by: George Wilkie <gwilkie@...tta.att-mail.com>

Applied and queued up for -stable, thanks.