From: Qiyu Yan <yanqiyu01@gmail.com>
To: Willem de Bruijn <willemdebruijn.kernel@gmail.com>,
netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Simon Horman <horms@kernel.org>
Subject: Re: [bug?] "hw csum failure" warning triggered on veth interface
Date: Tue, 8 Apr 2025 10:31:01 +0800 [thread overview]
Message-ID: <72bd4d1d-ea06-4bcc-a77d-a56b5772c282@gmail.com> (raw)
In-Reply-To: <67f3e84d8304_38ecd3294aa@willemb.c.googlers.com.notmuch>
在 2025/4/7 22:59, Willem de Bruijn 写道:
> Can this be a packet coming in over the physical NIC, forwarded
> through veth to the container. Either using ip_forward or some
> redirect.
>
> Do packets arrive encapsulated in a tunnel and what does the
> decapsulation?
Yes, they are, by looking at the skb address information and compare the
address to the route table, those are traffics from/to a CX4 NIC.
[Internet] <--> [CX4] <-- DNAT to Container/ SNAT from container -->
[podman0] <---> [veth in netns]
I did not enable any special encapsulation on the internet/CX4 side.
prev parent reply other threads:[~2025-04-08 2:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-06 14:35 [bug?] "hw csum failure" warning triggered on veth interface Qiyu Yan
2025-04-07 14:59 ` Willem de Bruijn
2025-04-08 2:31 ` Qiyu Yan [this message]
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