From: "Yang Huajian（杨华健）" <huajianyang@asrmicro•com>
To: "pablo@netfilter•org" <pablo@netfilter•org>
Cc: Florian Westphal <fw@strlen•de>,
"kadlec@netfilter•org" <kadlec@netfilter•org>,
"razor@blackwall•org" <razor@blackwall•org>,
"idosch@nvidia•com" <idosch@nvidia•com>,
"davem@davemloft•net" <davem@davemloft•net>,
"dsahern@kernel•org" <dsahern@kernel•org>,
"edumazet@google•com" <edumazet@google•com>,
"kuba@kernel•org" <kuba@kernel•org>,
"pabeni@redhat•com" <pabeni@redhat•com>,
"horms@kernel•org" <horms@kernel•org>,
"netfilter-devel@vger•kernel.org"
<netfilter-devel@vger•kernel.org>,
"coreteam@netfilter•org" <coreteam@netfilter•org>,
"bridge@lists•linux.dev" <bridge@lists•linux.dev>,
"netdev@vger•kernel.org" <netdev@vger•kernel.org>,
"linux-kernel@vger•kernel.org" <linux-kernel@vger•kernel.org>
Subject: 答复: [PATCH] net: Move specific fragmented packet to slow_path instead of dropping it
Date: Thu, 24 Apr 2025 02:12:02 +0000 [thread overview]
Message-ID: <313bbfd54e6540e58e60dfcd9f0e8b2e@exch03.asrmicro.com> (raw)
In-Reply-To: <aAEMPbbOGZDRygwr@strlen.de>
Hi Pablo,
Can you give some advice?
Thanks.
Best Regards,
Huajian
-----邮件原件-----
发件人: Florian Westphal [mailto:fw@strlen•de]
发送时间: 2025年4月17日 22:12
收件人: Yang Huajian（杨华健） <huajianyang@asrmicro•com>
抄送: pablo@netfilter•org; kadlec@netfilter•org; razor@blackwall•org; idosch@nvidia•com; davem@davemloft•net; dsahern@kernel•org; edumazet@google•com; kuba@kernel•org; pabeni@redhat•com; horms@kernel•org; netfilter-devel@vger•kernel.org; coreteam@netfilter•org; bridge@lists•linux.dev; netdev@vger•kernel.org; linux-kernel@vger•kernel.org
主题: Re: [PATCH] net: Move specific fragmented packet to slow_path instead of dropping it
Huajian Yang <huajianyang@asrmicro•com> wrote:
> The config NF_CONNTRACK_BRIDGE will change the bridge forwarding for
> fragmented packets.
>
> The original bridge does not know that it is a fragmented packet and
> forwards it directly, after NF_CONNTRACK_BRIDGE is enabled, function
> nf_br_ip_fragment and br_ip6_fragment will check the headroom.
>
> In original br_forward, insufficient headroom of skb may indeed exist,
> but there's still a way to save the skb in the device driver after
> dev_queue_xmit.So droping the skb will change the original bridge
> forwarding in some cases.
Fixes: 3c171f496ef5 ("netfilter: bridge: add connection tracking system")
Reviewed-by: Florian Westphal <fw@strlen•de>
This should probably be routed via Pablo.
Pablo, feel free to route this via nf-next if you think its not an urgent fix, its been like this since bridge conntrack was added.
next prev parent reply other threads:[~2025-04-24 2:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-17 9:29 [PATCH] net: Move specific fragmented packet to slow_path instead of dropping it Huajian Yang
2025-04-17 14:12 ` Florian Westphal
2025-04-24 2:12 ` Yang Huajian（杨华健） [this message]
2025-04-24 21:25 ` Pablo Neira Ayuso
-- strict thread matches above, loose matches on Subject: below --
2025-04-10 7:57 Huajian Yang
2025-04-10 10:18 ` Florian Westphal
2025-04-11 2:43 ` 答复: " Yang Huajian（杨华健）
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=313bbfd54e6540e58e60dfcd9f0e8b2e@exch03.asrmicro.com \
--to=huajianyang@asrmicro$(echo .)com \
--cc=bridge@lists$(echo .)linux.dev \
--cc=coreteam@netfilter$(echo .)org \
--cc=davem@davemloft$(echo .)net \
--cc=dsahern@kernel$(echo .)org \
--cc=edumazet@google$(echo .)com \
--cc=fw@strlen$(echo .)de \
--cc=horms@kernel$(echo .)org \
--cc=idosch@nvidia$(echo .)com \
--cc=kadlec@netfilter$(echo .)org \
--cc=kuba@kernel$(echo .)org \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=netdev@vger$(echo .)kernel.org \
--cc=netfilter-devel@vger$(echo .)kernel.org \
--cc=pabeni@redhat$(echo .)com \
--cc=pablo@netfilter$(echo .)org \
--cc=razor@blackwall$(echo .)org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox