net: TAP uses NetClientInfo offloading callbacks

The TAP NetClientInfo structure is inizialized with the TAP-specific
functions that manipulates offloading features.
Signed-off-by: NVincenzo Maffione <v.maffione@gmail.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

net/tap-win32.c

@@ -669,11 +669,60 @@ static void tap_win32_send(void *opaque)
     }
 }
 
+bool tap_has_ufo(NetClientState *nc)
+{
+    return false;
+}
+
+bool tap_has_vnet_hdr(NetClientState *nc)
+{
+    return false;
+}
+
+int tap_probe_vnet_hdr_len(int fd, int len)
+{
+    return 0;
+}
+
+void tap_fd_set_vnet_hdr_len(int fd, int len)
+{
+}
+
+void tap_using_vnet_hdr(NetClientState *nc, bool using_vnet_hdr)
+{
+}
+
+void tap_set_offload(NetClientState *nc, int csum, int tso4,
+                     int tso6, int ecn, int ufo)
+{
+}
+
+struct vhost_net *tap_get_vhost_net(NetClientState *nc)
+{
+    return NULL;
+}
+
+bool tap_has_vnet_hdr_len(NetClientState *nc, int len)
+{
+    return false;
+}
+
+void tap_set_vnet_hdr_len(NetClientState *nc, int len)
+{
+    abort();
+}
+
 static NetClientInfo net_tap_win32_info = {
     .type = NET_CLIENT_OPTIONS_KIND_TAP,
     .size = sizeof(TAPState),
     .receive = tap_receive,
     .cleanup = tap_cleanup,
+    .has_ufo = tap_has_ufo,
+    .has_vnet_hdr = tap_has_vnet_hdr,
+    .has_vnet_hdr_len = tap_has_vnet_hdr_len,
+    .using_vnet_hdr = tap_using_vnet_hdr,
+    .set_offload = tap_set_offload,
+    .set_vnet_hdr_len = tap_set_vnet_hdr_len,
 };
 
 static int tap_win32_init(NetClientState *peer, const char *model,
@@ -722,49 +771,6 @@ int net_init_tap(const NetClientOptions *opts, const char *name,
     return 0;
 }
 
-bool tap_has_ufo(NetClientState *nc)
-{
-    return false;
-}
-
-bool tap_has_vnet_hdr(NetClientState *nc)
-{
-    return false;
-}
-
-int tap_probe_vnet_hdr_len(int fd, int len)
-{
-    return 0;
-}
-
-void tap_fd_set_vnet_hdr_len(int fd, int len)
-{
-}
-
-void tap_using_vnet_hdr(NetClientState *nc, bool using_vnet_hdr)
-{
-}
-
-void tap_set_offload(NetClientState *nc, int csum, int tso4,
-                     int tso6, int ecn, int ufo)
-{
-}
-
-struct vhost_net *tap_get_vhost_net(NetClientState *nc)
-{
-    return NULL;
-}
-
-bool tap_has_vnet_hdr_len(NetClientState *nc, int len)
-{
-    return false;
-}
-
-void tap_set_vnet_hdr_len(NetClientState *nc, int len)
-{
-    abort();
-}
-
 int tap_enable(NetClientState *nc)
 {
     abort();

net/tap.c

@@ -314,6 +314,12 @@ static NetClientInfo net_tap_info = {
     .receive_iov = tap_receive_iov,
     .poll = tap_poll,
     .cleanup = tap_cleanup,
+    .has_ufo = tap_has_ufo,
+    .has_vnet_hdr = tap_has_vnet_hdr,
+    .has_vnet_hdr_len = tap_has_vnet_hdr_len,
+    .using_vnet_hdr = tap_using_vnet_hdr,
+    .set_offload = tap_set_offload,
+    .set_vnet_hdr_len = tap_set_vnet_hdr_len,
 };
 
 static TAPState *net_tap_fd_init(NetClientState *peer,