From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Subject: Re: [PATCH RFC net-next 00/11] udp gso
Date: Tue, 17 Apr 2018 16:48:29 -0400
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Cc: Network Development <netdev@vger.kernel.org>,
        Willem de Bruijn <willemb@google.com>
To: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
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On (04/17/18 16:23), Willem de Bruijn wrote:
> 
> Assuming IPv4 with an MTU of 1500 and the maximum segment
> size of 1472, the receiver will see three datagrams with MSS of
> 1472B, 528B and 512B.

so the recvmsg will also pass up 1472, 526, 512, right?
If yes, how will the recvmsg differentiate between the case
(2000 byte message followed by 512 byte message) and
(1472 byte message, 526 byte message, then 512 byte message),
in other words, how are UDP message boundary semantics preserved?

--Sowmini