net/filter-mirror: implement filter-redirector

Filter-redirector is a netfilter plugin.
It gives qemu the ability to redirect net packet.
redirector can redirect filter's net packet to outdev.
and redirect indev's packet to filter.

                      filter
                        +
            redirector  |
               +--------------+
               |        |     |
  indev +-----------+   +---------->  outdev
               |    |         |
               +--------------+
                    |
                    v
                  filter

usage:

-netdev user,id=hn0
-chardev socket,id=s0,host=ip_primary,port=X,server,nowait
-chardev socket,id=s1,host=ip_primary,port=Y,server,nowait
-filter-redirector,id=r0,netdev=hn0,queue=tx/rx/all,indev=s0,outdev=s1

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/vl.c b/vl.c
index 8cd1d0c11f..bd81ea954c 100644
--- a/vl.c
+++ b/vl.c
@@ -2842,7 +2842,8 @@ static bool object_create_initial(const char *type)
      */
     if (g_str_equal(type, "filter-buffer") ||
         g_str_equal(type, "filter-dump") ||
-        g_str_equal(type, "filter-mirror")) {
+        g_str_equal(type, "filter-mirror") ||
+        g_str_equal(type, "filter-redirector")) {
         return false;
     }