linux-kernel - Re: [PATCH V2] netlink: Add netns check on taps

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Date:   Mon, 11 Dec 2017 11:58:37 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     mkubecek@...e.cz
Cc:     cernekee@...omium.org, johannes.berg@...el.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        daniel@...earbox.net, dsahern@...il.com
Subject: Re: [PATCH V2] netlink: Add netns check on taps

From: Michal Kubecek <mkubecek@...e.cz>
Date: Mon, 11 Dec 2017 17:13:50 +0100

> On Wed, Dec 06, 2017 at 03:57:14PM -0500, David Miller wrote:
>> From: Kevin Cernekee <cernekee@...omium.org>
>> Date: Wed,  6 Dec 2017 12:12:27 -0800
>> 
>> > Currently, a nlmon link inside a child namespace can observe systemwide
>> > netlink activity.  Filter the traffic so that nlmon can only sniff
>> > netlink messages from its own netns.
>> > 
>> > Test case:
>> > 
>> >     vpnns -- bash -c "ip link add nlmon0 type nlmon; \
>> >                       ip link set nlmon0 up; \
>> >                       tcpdump -i nlmon0 -q -w /tmp/nlmon.pcap -U" &
>> >     sudo ip xfrm state add src 10.1.1.1 dst 10.1.1.2 proto esp \
>> >         spi 0x1 mode transport \
>> >         auth sha1 0x6162633132330000000000000000000000000000 \
>> >         enc aes 0x00000000000000000000000000000000
>> >     grep --binary abc123 /tmp/nlmon.pcap
>> > 
>> > Signed-off-by: Kevin Cernekee <cernekee@...omium.org>
>> 
>> Applied and queued up for -stable, thanks Kevin.
> 
> David,
> 
> this patch is marked as accepted in patchworks and listed in
> 
>   http://patchwork.ozlabs.org/bundle/davem/stable/?state=*
> 
> but it's not in the net tree. Is there a problem with it?

Sorry, it should be there now.

Thanks.