From: "Liping Zhang" <zlpnobody@163.com>
To: "Florian Westphal" <fw@strlen.de>
Cc: pablo@netfilter.org, netfilter-devel@vger.kernel.org,
"Liping Zhang" <liping.zhang@spreadtrum.com>
Subject: Re: [PATCH iptables] extensions: libxt_connlabel: Add translation to nft
Date: Sat, 16 Jul 2016 17:28:34 +0800 (CST) [thread overview]
Message-ID: <8a553bc.7699.155f309334d.Coremail.zlpnobody@163.com> (raw)
In-Reply-To: <20160716090439.GA6123@breakpoint.cc>
At 2016-07-16 17:04:39, "Florian Westphal" <fw@strlen.de> wrote:
>Liping Zhang <zlpnobody@163.com> wrote:
>>
>> # iptables-translate -A INPUT -m connlabel ! --label bit40 --set
>> nft add rule ip filter INPUT ct label set bit40 ct label != bit40 counter
>
>Should probably be:
>
>... ct label and bit40 != bit40 ...
>
>!= bit40 will be true if bit40 and another bit is set.
Right, "ct label bit40" and "ct label != bit40" have the different semantics:
# nft add rule filter input ct label bit40 --debug=netlink
ip filter input
[ ct load label => reg 1 ]
[ bitwise reg 1 = (reg=1 & 0x00000000 0x00000100 0x00000000 0x00000000 ) ^ 0x00000000 0x00000000 0x00000000 0x00000000 ]
[ cmp neq reg 1 0x00000000 0x00000000 0x00000000 0x00000000 ]
# nft add rule filter input ct label != bit40 --debug=netlink
ip filter input
[ ct load label => reg 1 ]
[ cmp neq reg 1 0x00000000 0x00000100 0x00000000 0x00000000 ]
Will send V2 later, Thanks.
prev parent reply other threads:[~2016-07-16 9:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-16 6:15 [PATCH iptables] extensions: libxt_connlabel: Add translation to nft Liping Zhang
2016-07-16 9:04 ` Florian Westphal
2016-07-16 9:28 ` Liping Zhang [this message]
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