[Qemu-devel] [RFC PATCH V5 0/4] Introduce COLO-compare

[Zhang Chen <zhangchen.fnst@cn.fujitsu.com>]

COLO-compare is a part of COLO project. It is used
to compare the network package to help COLO decide
whether to do checkpoint.

the full version in this github:
https://github.com/zhangckid/qemu/tree/colo-v2.7-proxy-mode-compare-with-colo-base-jun20

v5:
 p3:
    - comments from Jason
      we poll and handle chardev in comapre thread,
      Through this way, there's no need for extra 
      synchronization with main loop
      this depend on another patch:
      qemu-char: Fix context for g_source_attach()
    - remove QemuEvent
 p2:
    - remove conn->list_lock
 p1:
    - move compare_pri/sec_chr_in to p3
    - move compare_chr_send to p2

v4:
 p4:
    - add some comments
    - fix some trace-events
    - fix tcp compare error
 p3:
    - add rcu_read_lock().
    - fix trace name
    - fix jason's other comments
    - rebase some Dave's branch function
 p2:
    - colo_compare_connection() change g_queue_push_head() to
    - g_queue_push_tail() match to sorted order.
    - remove pkt->s
    - move data structure to colo-base.h
    - add colo-base.c reuse codes for filter-rewriter
    - add some filter-rewriter needs struct
    - depends on previous SocketReadState patch
 p1:
    - except move qemu_chr_add_handlers()
      to colo thread
    - remove class_finalize
    - remove secondary arp codes
    - depends on previous SocketReadState patch

v3:
  - rebase colo-compare to colo-frame v2.7
  - fix most of Dave's comments
    (except RCU)
  - add TCP,UDP,ICMP and other packet comparison
  - add trace-event
  - add some comments
  - other bug fix
  - add RFC index
  - add usage in patch 1/4

v2:
  - add jhash.h

v1:
  - initial patch


Zhang Chen (4):
  colo-compare: introduce colo compare initialization
  colo-compare: track connection and enqueue packet
  colo-compare: introduce packet comparison thread
  colo-compare: add TCP,UDP,ICMP packet comparison

 include/qemu/jhash.h |  61 +++++
 net/Makefile.objs    |   2 +
 net/colo-base.c      | 195 ++++++++++++++
 net/colo-base.h      |  91 +++++++
 net/colo-compare.c   | 742 +++++++++++++++++++++++++++++++++++++++++++++++++++
 qemu-options.hx      |  34 +++
 trace-events         |  11 +
 vl.c                 |   3 +-
 8 files changed, 1138 insertions(+), 1 deletion(-)
 create mode 100644 include/qemu/jhash.h
 create mode 100644 net/colo-base.c
 create mode 100644 net/colo-base.h
 create mode 100644 net/colo-compare.c

-- 
2.7.4