Re: [PATCH] netfilter: conntrack: Fix ifdef checks for CONFIG_NF_CONNTRACK_MARK

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On Wed, Dec 14, 2016 at 04:35:57PM -0500, joseph.j.conley@xxxxxxxxx wrote:
> From: Joe Conley <joe.conley@xxxxxxxxxxxxx>
> 
> Two missing ifdef checks for CONFIG_NF_CONNTRACK_MARK were causing
> EOPNOTSUPP to be returned. Every single place that cda[CTA_MARK] or cda[CTA_MARK_MASK]
> was checked was inside a #ifdef for CONFIG_NF_CONNTRACK_MARK except for these
> two places. The reason for this change stems from this commit:
> 866476f323465a8afef10b14b48d5136bf5c51fe (netfilter: conntrack: Flush connections with a given mark)
> 
> This allows conntrack -L to be ran succesfully when CONFIG_NF_CONNTRACK_MARK
> is not enabled.

I would like to understand how you're triggering this problem. If it
is a plain 'conntrack -L' command line invocation that triggers the
problem, then it's probably a userspace problem since we should not
send any mark attribute to the kernel if not set.
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