[V3,0/7] Bypass specific network traffic in COLO

Message

Zhang Chen March 18, 2021, 3:04 a.m. UTC

Due to some real user scenarios don't need to monitor all traffic.
And qemu net-filter also need function to more detailed flow control.  
This series give user ability to bypass kinds of COLO network stream.

For example, windows guest user want to enable windows remote desktop
to touch guest(UDP/TCP 3389), This case use UDP and TCP mixed, and the
tcp part payload always different caused by real desktop display
data(for guest time/ mouse display....).

Another case is some real user application will actively transmit information
include guest time part, primary guest send data with time 10:01.000,
At the same time secondary guest send data with time 10:01.001,
it will always trigger COLO checkpoint(live migrate) to drop guest performance.

  V3:
    - Add COLO passthrough list lock.
    - Add usage demo and more comments.

  V2:
    - Add the n-tuple support.
    - Add some qapi definitions.
    - Support multi colo-compare objects.
    - Support setup each rules for each objects individually.
    - Clean up COLO compare definition to .h file.
    - Rebase HMP command for stable tree.
    - Add redundant rules check.

Zhang Chen (7):
  qapi/net.json: Add IP_PROTOCOL definition
  qapi/net.json: Add L4_Connection definition
  qapi/net: Add new QMP command for COLO passthrough
  hmp-commands: Add new HMP command for COLO passthrough
  net/colo-compare: Move data structure and define to .h file.
  net/colo-compare: Add passthrough list to CompareState
  net/net.c: Add handler for COLO passthrough connection

 hmp-commands.hx       |  26 +++++++
 include/monitor/hmp.h |   2 +
 monitor/hmp-cmds.c    |  34 +++++++++
 net/colo-compare.c    | 135 ++++++++--------------------------
 net/colo-compare.h    | 117 ++++++++++++++++++++++++++++++
 net/net.c             | 163 ++++++++++++++++++++++++++++++++++++++++++
 qapi/net.json         |  96 +++++++++++++++++++++++++
 7 files changed, 467 insertions(+), 106 deletions(-)