net/filter-mirror.c: Add new option to enable vnet support for filter-redirector

We add the vnet_hdr_support option for filter-redirector, default is disabled.
If you use virtio-net-pci net driver or other driver needs vnet_hdr, please enable it.
Because colo-compare or other modules needs the vnet_hdr_len to parse
packet, we add this new option send the len to others.
You can use it for example:
-object filter-redirector,id=r0,netdev=hn0,queue=tx,outdev=red0,vnet_hdr_support

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/net/filter-mirror.c b/net/filter-mirror.c
index 32ecdb3050..90e2c92337 100644
--- a/net/filter-mirror.c
+++ b/net/filter-mirror.c
@@ -368,6 +368,22 @@ static void filter_redirector_set_outdev(Object *obj,
     s->outdev = g_strdup(value);
 }
 
+static bool filter_redirector_get_vnet_hdr(Object *obj, Error **errp)
+{
+    MirrorState *s = FILTER_REDIRECTOR(obj);
+
+    return s->vnet_hdr;
+}
+
+static void filter_redirector_set_vnet_hdr(Object *obj,
+                                           bool value,
+                                           Error **errp)
+{
+    MirrorState *s = FILTER_REDIRECTOR(obj);
+
+    s->vnet_hdr = value;
+}
+
 static void filter_mirror_init(Object *obj)
 {
     MirrorState *s = FILTER_MIRROR(obj);
@@ -383,10 +399,17 @@ static void filter_mirror_init(Object *obj)
 
 static void filter_redirector_init(Object *obj)
 {
+    MirrorState *s = FILTER_REDIRECTOR(obj);
+
     object_property_add_str(obj, "indev", filter_redirector_get_indev,
                             filter_redirector_set_indev, NULL);
     object_property_add_str(obj, "outdev", filter_redirector_get_outdev,
                             filter_redirector_set_outdev, NULL);
+
+    s->vnet_hdr = false;
+    object_property_add_bool(obj, "vnet_hdr_support",
+                             filter_redirector_get_vnet_hdr,
+                             filter_redirector_set_vnet_hdr, NULL);
 }
 
 static void filter_mirror_fini(Object *obj)