[Qemu-devel] [PATCH v3 0/4] char: write callback, virtio-console: flow control

[Amit Shah <amit.shah@redhat.com>]

Hello,

This series lets interested callers ask for an -EAGAIN return from the
chardev backends (only unix and tcp sockets as of now) to implement
their own flow control.

Support for other backend types is easy to add, I'll do that in a
separate series if this is acceptable.

Amit Shah (4):
  char: Let writers know how much data was written in case of errors
  char: Add ability to provide a callback when write won't return
    -EAGAIN
  virtio-console: Factor out common init between console and generic
    ports
  virtio-console: Throttle virtio-serial-bus if we can't consume any
    more guest data

 gdbstub.c            |    2 +-
 hw/debugcon.c        |    2 +-
 hw/escc.c            |    3 +-
 hw/etraxfs_ser.c     |    4 +-
 hw/mcf_uart.c        |    2 +-
 hw/pl011.c           |    2 +-
 hw/pxa2xx.c          |    2 +-
 hw/serial.c          |    2 +-
 hw/sh_serial.c       |    2 +-
 hw/syborg_serial.c   |    3 +-
 hw/usb-serial.c      |    2 +-
 hw/virtio-console.c  |  156 +++++++++++++++++++++++++++++++++++++++++++-------
 hw/xen_console.c     |    7 +-
 hw/xilinx_uartlite.c |    5 +-
 monitor.c            |    4 +-
 net/slirp.c          |    2 +-
 net/socket.c         |    4 +-
 qemu-char.c          |   68 ++++++++++++++++++----
 qemu-char.h          |    6 ++
 qemu_socket.h        |    3 +-
 20 files changed, 227 insertions(+), 54 deletions(-)