netdev - Re: [PATCH net] net: sched: cls_flower: validate nested enc_opts

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Message-Id: <20181109.204025.1856075959976079971.davem@davemloft.net>
Date:   Fri, 09 Nov 2018 20:40:25 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     jakub.kicinski@...ronome.com
Cc:     oss-drivers@...ronome.com, netdev@...r.kernel.org
Subject: Re: [PATCH net] net: sched: cls_flower: validate nested
 enc_opts_policy to avoid build warning

From: Jakub Kicinski <jakub.kicinski@...ronome.com>
Date: Fri,  9 Nov 2018 14:41:22 -0800

> TCA_FLOWER_KEY_ENC_OPTS and TCA_FLOWER_KEY_ENC_OPTS_MASK can only
> currently contain further nested attributes, which are parsed by
> hand, so the policy is never actually used.  Add the validation
> anyway to avoid potential bugs when other attributes are added
> and to make the attribute structure slightly more clear.  Validation
> will also set extact to point to bad attribute on error.
> 
> Fixes: 0a6e77784f49 ("net/sched: allow flower to match tunnel options")
> Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
> Acked-by: Simon Horman <simon.horman@...ronome.com>

If this fixes a build warning, please include the build warning
message in your commit log.

Thanks!