From: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
To: Xin Long <lucien.xin@gmail.com>
Cc: network dev <netdev@vger.kernel.org>,
linux-sctp@vger.kernel.org, davem@davemloft.net, kuba@kernel.org,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>
Subject: Re: [PATCH net] sctp: fix missing encap_port propagation for GSO fragments
Date: Mon, 13 Apr 2026 09:37:10 -0300 [thread overview]
Message-ID: <adzjdjdll1fi5e6N@t14s.localdomain> (raw)
In-Reply-To: <ea65ed61b3598d8b4940f0170b9aa1762307e6c3.1776017631.git.lucien.xin@gmail.com>
On Sun, Apr 12, 2026 at 02:13:51PM -0400, Xin Long wrote:
> encap_port in SCTP_INPUT_CB(skb) is used by sctp_vtag_verify() for
> SCTP-over-UDP processing. In the GSO case, it is only set on the head
> skb, while fragment skbs leave it 0.
>
> This results in fragment skbs seeing encap_port == 0, breaking
> SCTP-over-UDP connections.
>
> Fix it by propagating encap_port from the head skb cb when initializing
> fragment skbs in sctp_inq_pop().
>
> Fixes: 046c052b475e ("sctp: enable udp tunneling socks")
> Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
next prev parent reply other threads:[~2026-04-13 12:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-12 18:13 [PATCH net] sctp: fix missing encap_port propagation for GSO fragments Xin Long
2026-04-13 12:37 ` Marcelo Ricardo Leitner [this message]
2026-04-14 0:10 ` patchwork-bot+netdevbpf
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