From: Matthieu Baerts <matttbe@kernel.org>
To: Li Xiasong <lixiasong1@huawei.com>, mptcp@lists.linux.dev
Cc: weiyongjun1@huawei.com, yuehaibing@huawei.com,
zhangchangzhong@huawei.com
Subject: Re: [PATCH mptcp-net v3 0/2] mptcp: pm: fix ADD_ADDR timer infinite retry on option space shortage
Date: Fri, 8 May 2026 13:47:44 +0200 [thread overview]
Message-ID: <120b5a4e-b73a-464c-969e-0abd27407ddc@kernel.org> (raw)
In-Reply-To: <20260507125224.3536507-1-lixiasong1@huawei.com>
Hi Li,
On 07/05/2026 14:52, Li Xiasong wrote:
> This series fixes a bug where the ADD_ADDR timer can keep rescheduling
> indefinitely when TCP option space is insufficient, blocking subsequent
> addresses in the endpoint list from being announced.
>
> The issue is reproducible when sending an IPv6 ADD_ADDR with port while
> tcp_timestamps is enabled. In that case, option space may be exhausted on
> pure ACKs, and ADD_ADDR retransmission can stall PM forward progress.
Now in our tree:
New patches for t/upstream-net and t/upstream:
- 89d79b9cc99b: mptcp: pm: fix ADD_ADDR timer infinite retry on option
space insufficient
- 330dfb1d1df7: selftests: mptcp: join: cover ADD_ADDR tx drop and list
progress
- Results: 112def6c73e7..67f6d956336b (export-net)
- Results: 3fc124e79727..1b5f90649a5a (export)
Tests are now in progress:
- export-net:
https://github.com/multipath-tcp/mptcp_net-next/commit/292cba7c4eb827d0bf79fa02422e6c3daacf8229/checks
- export:
https://github.com/multipath-tcp/mptcp_net-next/commit/63b133728231ebba5167bd1e53dda9bcf0bee7c7/checks
Cheers,
Matt
--
Sponsored by the NGI0 Core fund.
prev parent reply other threads:[~2026-05-08 11:47 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-07 12:52 [PATCH mptcp-net v3 0/2] mptcp: pm: fix ADD_ADDR timer infinite retry on option space shortage Li Xiasong
2026-05-07 12:52 ` [PATCH mptcp-net v3 1/2] mptcp: pm: fix ADD_ADDR timer infinite retry on option space insufficient Li Xiasong
2026-05-07 12:52 ` [PATCH mptcp-net v3 2/2] selftests: mptcp: join: cover ADD_ADDR tx drop and list progress Li Xiasong
2026-05-08 11:37 ` Matthieu Baerts
2026-05-07 13:40 ` [PATCH mptcp-net v3 0/2] mptcp: pm: fix ADD_ADDR timer infinite retry on option space shortage MPTCP CI
2026-05-08 11:37 ` Matthieu Baerts
2026-05-08 11:47 ` Matthieu Baerts [this message]
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