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[RFC,mptcp-next,v2,0/8] initial SOL_SOCKET support

Message ID 20210324131546.13730-1-fw@strlen.de
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Series initial SOL_SOCKET support | expand

Message

Florian Westphal March 24, 2021, 1:15 p.m. UTC 
This patch set improves support for several SOL_SOCKET tuneables,
addressing comments received for v1 patch set.

First patch adds skeleton synchronization functions to copy mptcp socket
settings to a subflow socket.

Notable changes:
In patch 1, work queue is only used when caller holds a spinlock that
prevents calls to sleepable functions such as lock_sock().

TCP_CONGESTION is now applied to all subflows.
TCP_INFO retrieves info from the first subflow.
It seems better to add MPTCP_INFO from out-of-tree patch set
in a future change.

I've not changed SO_LINGER either but I think doing a FASTCLOSE
is the right thing to do when linger time is 0.

Sending this now so there is a bit of review time before thursdays
meeting.

Florian Westphal (8):
  mptcp: add skeleton to sync msk socket options to subflows
  mptcp: setsockopt: handle SO_KEEPALIVE and SO_PRIORITY
  mptcp: setsockopt: handle receive/send buffer and device bind
  mptcp: setsockopt: support SO_LINGER
  mptcp: setsockopt: add SO_MARK support
  mptcp: setsockopt: add SO_INCOMING_CPU
  mptcp: setsockopt: SO_DEBUG and no-op options
  mptcp: sockopt: add TCP_CONGESTION and TCP_INFO

 net/mptcp/protocol.c |  54 +++++--
 net/mptcp/protocol.h |  11 ++
 net/mptcp/sockopt.c  | 362 +++++++++++++++++++++++++++++++++++++++++++
 net/mptcp/subflow.c  |   1 +
 4 files changed, 419 insertions(+), 9 deletions(-)