[Qemu-devel] [PATCH v2 0/5] Fix multifd with big number of channels

[Juan Quintela]

Hi

In this v2:
- dropped the already included patches upstream
- dropped the semaphore changes
- add backlog listen parameter through all the call chain (danp suggestion)
- also add the change for qio_channel_socket_async(), for consistency
  (it has zero users on tree anyways)
- for "fd" case, I just give an error if expected number of
  connections is bigger than 1.
- All patches except the multifd one should be noops (i.e. I pass
  everywhere the number of expected channels as one).

With this changes, I can migrate with 100 channels consistently.  It
always work.

Please, review.

Juan Quintela (5):
  socket: Add backlog parameter to socket_listen
  socket: Add num connections to qio_channel_socket_sync()
  socket: Add num connections to qio_channel_socket_async()
  socket: Add num connections to qio_net_listener_open_sync()
  multifd: Use number of channels as listen backlog

 blockdev-nbd.c                 |  2 +-
 chardev/char-socket.c          |  2 +-
 include/io/channel-socket.h    |  4 ++++
 include/io/net-listener.h      |  2 ++
 include/qemu/sockets.h         |  2 +-
 io/channel-socket.c            | 35 +++++++++++++++++++++++++---------
 io/net-listener.c              |  3 ++-
 io/trace-events                |  4 ++--
 migration/socket.c             |  7 ++++++-
 qemu-nbd.c                     |  2 +-
 qga/channel-posix.c            |  2 +-
 scsi/qemu-pr-helper.c          |  3 ++-
 tests/test-char.c              |  4 ++--
 tests/test-io-channel-socket.c |  4 ++--
 tests/test-util-sockets.c      | 12 ++++++------
 tests/tpm-emu.c                |  2 +-
 ui/vnc.c                       |  4 ++--
 util/qemu-sockets.c            | 33 +++++++++++++++++++++-----------
 util/trace-events              |  2 ++
 19 files changed, 86 insertions(+), 43 deletions(-)

-- 
2.21.0