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Date:   Tue, 12 May 2020 12:09:11 -0700 (PDT)
From:   David Miller <>
Subject: Re: [MPTCP] [PATCH net] mptcp: Initialize map_seq upon subflow

From: Paolo Abeni <>
Date: Mon, 11 May 2020 19:35:21 +0200

> On Mon, 2020-05-11 at 09:24 -0700, Christoph Paasch wrote:
>> When the other MPTCP-peer uses 32-bit data-sequence numbers, we rely on
>> map_seq to indicate how to expand to a 64-bit data-sequence number in
>> expand_seq() when receiving data.
>> For new subflows, this field is not initialized, thus results in an
>> "invalid" mapping being discarded.
>> Fix this by initializing map_seq upon subflow establishment time.
>> Fixes: f296234c98a8 ("mptcp: Add handling of incoming MP_JOIN requests")
>> Signed-off-by: Christoph Paasch <>
> Reviewed-by: Paolo Abeni <>

Applied, thanks.

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