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Re: [Qemu-devel] [RFC PATCH V3 0/3] filter-rewriter: introduce filter-re

From: Zhang Chen
Subject: Re: [Qemu-devel] [RFC PATCH V3 0/3] filter-rewriter: introduce filter-rewriter
Date: Wed, 27 Jul 2016 10:32:37 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0

Hi~ all~~

Anyone have some comments for this series?

We need more comments to improve COLO codes.


Zhang Chen

On 07/05/2016 06:29 PM, Zhang Chen wrote:
Filter-rewriter is a part of COLO project.
So this patch set depend on colo-compare.
It will rewrite some of secondary packet to make
secondary guest's connection established successfully.
In this module we will rewrite tcp packet's ack to the secondary
from primary,and rewrite tcp packet's seq to the primary from

   - fix typo
   - add conn->syn_flag
   - add some comments
   - remove conn_list_lock
   - fix offset set bug

   - add more comments about packet flows
   - add some trace-event
   - add seq offset ( = secondary_seq - primary_seq)

   - initial patch

Zhang Chen (3):
   filter-rewriter: introduce filter-rewriter initialization
   filter-rewriter: track connection and parse packet
   filter-rewriter: rewrite tcp packet to keep secondary connection

  net/Makefile.objs     |   1 +
  net/colo-base.c       |   2 +
  net/colo-base.h       |   7 ++
  net/filter-rewriter.c | 262 ++++++++++++++++++++++++++++++++++++++++++++++++++
  qemu-options.hx       |  13 +++
  trace-events          |   5 +
  vl.c                  |   3 +-
  7 files changed, 292 insertions(+), 1 deletion(-)
  create mode 100644 net/filter-rewriter.c


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