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Date:   Mon, 14 Sep 2020 13:28:34 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH net-next v2 00/13] mptcp: introduce support for real
 multipath xmit

From: Paolo Abeni <>
Date: Mon, 14 Sep 2020 10:01:06 +0200

> This series enable MPTCP socket to transmit data on multiple subflows
> concurrently in a load balancing scenario.
> First the receive code path is refactored to better deal with out-of-order
> data (patches 1-7). An RB-tree is introduced to queue MPTCP-level out-of-order
> data, closely resembling the TCP level OoO handling.
> When data is sent on multiple subflows, the peer can easily see OoO - "future"
> data at the MPTCP level, especially if speeds, delay, or jitter are not
> symmetric.
> The other major change regards the netlink PM, which is extended to allow
> creating non backup subflows in patches 9-11.
> There are a few smaller additions, like the introduction of OoO related mibs,
> send buffer autotuning and better ack handling.
> Finally a bunch of new self-tests is introduced. The new feature is tested
> ensuring that the B/W used by an MPTCP socket using multiple subflows matches
> the link aggregated B/W - we use low B/W virtual links, to ensure the tests
> are not CPU bounded.
> v1 -> v2:
>   - fix 32 bit build breakage
>   - fix a bunch of checkpatch issues

Looks good, series applied, thanks Paolo.

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