From: David S. Miller Date: Mon, 14 Sep 2020 20:28:03 +0000 (-0700) Subject: Merge branch 'mptcp-introduce-support-for-real-multipath-xmit' X-Git-Tag: Ubuntu-5.10.0-12.13~1666^2~279 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=b91c06c5df511dfed3995c4e1a44729756ef0025;p=mirror_ubuntu-hirsute-kernel.git Merge branch 'mptcp-introduce-support-for-real-multipath-xmit' Paolo Abeni says: ==================== mptcp: introduce support for real multipath xmit 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 ==================== Signed-off-by: David S. Miller --- b91c06c5df511dfed3995c4e1a44729756ef0025