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authorZhang Chen <zhangchen.fnst@cn.fujitsu.com>2016-09-27 10:22:29 +0800
committerJason Wang <jasowang@redhat.com>2016-09-27 17:54:21 +0800
commitb6540d403d28d9ecbbf0ab76b82fb0fa92dc75ce (patch)
tree694b3a31130ff38dae45973ed030892c2515281c /scripts/qemu.py
parentccf0426c09f0989d9874f7c63aff58376e1d972a (diff)
downloadfocaccia-qemu-b6540d403d28d9ecbbf0ab76b82fb0fa92dc75ce.tar.gz
focaccia-qemu-b6540d403d28d9ecbbf0ab76b82fb0fa92dc75ce.zip
colo-compare: track connection and enqueue packet
In this patch we use kernel jhash table to track
connection, and then enqueue net packet like this:

+ CompareState ++
|               |
+---------------+   +---------------+         +---------------+
|conn list      +--->conn           +--------->conn           |
+---------------+   +---------------+         +---------------+
|               |     |           |             |          |
+---------------+ +---v----+  +---v----+    +---v----+ +---v----+
                  |primary |  |secondary    |primary | |secondary
                  |packet  |  |packet  +    |packet  | |packet  +
                  +--------+  +--------+    +--------+ +--------+
                      |           |             |          |
                  +---v----+  +---v----+    +---v----+ +---v----+
                  |primary |  |secondary    |primary | |secondary
                  |packet  |  |packet  +    |packet  | |packet  +
                  +--------+  +--------+    +--------+ +--------+
                      |           |             |          |
                  +---v----+  +---v----+    +---v----+ +---v----+
                  |primary |  |secondary    |primary | |secondary
                  |packet  |  |packet  +    |packet  | |packet  +
                  +--------+  +--------+    +--------+ +--------+

We use conn_list to record connection info.
When we want to enqueue a packet, firstly get the
connection from connection_track_table. then push
the packet to g_queue(pri/sec) in it's own conn.

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'scripts/qemu.py')
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