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Message-ID: <cf0d02b2-b1db-7ef6-41b8-7c345b7d53d5@redhat.com>
Date: Wed, 13 May 2020 23:20:35 +0800
From: Xiubo Li <xiubli@...hat.com>
To: netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
coreteam@...filter.org
Cc: kernel list <linux-kernel@...r.kernel.org>,
Jeff Layton <jlayton@...nel.org>,
Patrick Donnelly <pdonnell@...hat.com>
Subject: netfilter: does the API break or something else ?
Hi Experts,
Recently I hit one netfilter issue, it seems the API breaks or something
else.
On CentOS8.1 with the recent upstream kernel built from source, such as
5.6.0-rc6/5.7.0-rc4. When running the following command:
$ sudo bash -c 'iptables -A FORWARD -o enp3s0f1 -i ceph-brx -j ACCEPT'
iptables v1.8.2 (nf_tables): CHAIN_ADD failed (Operation not supported):
chain INPUT
With the nftables command:
$ sudo nft add chain ip filter INPUT { type filter hook input priority 0\; }
Error: Could not process rule: Operation not supported
add chain ip filter INPUT { type filter hook input priority 0; }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
$ sudo nft add chain ip filter FORWARD { type filter hook forward
priority 0\; }
Error: Could not process rule: Operation not supported
add chain ip filter FORWARD { type filter hook forward priority 0; }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
$ sudo nft add chain ip filter OUTPUT { type filter hook output
priority 0\; }
Error: Could not process rule: Operation not supported
add chain ip filter OUTPUT { type filter hook output priority 0; }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
While tried them with downstream kernel 4.18.0-147.8.1.el8_1.x86_64,
they all could work well.
The nftables/libnftnl packages are:
$ rpm -qa|grep nft
nftables-0.9.0-14.el8.x86_64
libnftnl-1.1.1-4.el8.x86_64
And we have tried v5.7.0-rc4+ with f31 userspace, they all could work
well too.
From above I just suspect the API should break. Could someone kindly
point out which and where ?
Thanks
BRs
Xiubo
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