[RFC PATCH 0/6] mptcp: address stall under memory pressure

[Paolo Abeni <pabeni@redhat.com>]

This is a very early RFC to discuss a different approch to solve the
data transfer stall reported by Geliang and Gang.

There are a few open points documented into the individual patches, the
goal here is describe with some detail the intended architecture.

Note that the diffstat is biases by the quite large patch 2/6, which
contains mechanical transformation of existing code; "real" changes are
noticiable smaller.

Paolo Abeni (6):
  mptcp: move checks vs rcvbuf size earlier in the RX path
  mptcp: sync mptcp skb cb layout with tcp one
  tcp: expose the tcp_collapse_ofo_queue() helper to mptcp usage, too
  mptcp: implemented OoO queue pruning
  mptcp: refine coalescing conditions
  mptcp: unclone skbs before coalescing them, when needed

 include/net/tcp.h    |   4 ++
 net/ipv4/tcp_input.c |  55 ++++++++++------
 net/mptcp/mib.c      |   3 +
 net/mptcp/mib.h      |   3 +
 net/mptcp/options.c  |  35 +++++++++-
 net/mptcp/protocol.c | 154 +++++++++++++++++++++++++++++++------------
 net/mptcp/protocol.h |   7 +-
 7 files changed, 195 insertions(+), 66 deletions(-)

-- 
2.53.0