Will be used by vhost to attach/detach to backend.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

---

 net/tap.c |    7 +++++++

 net/tap.h |    2 ++

 2 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/net/tap.c b/net/tap.c

index d3492de..7e9ca79 100644

--- a/net/tap.c

+++ b/net/tap.c

@@ -269,6 +269,13 @@ static void tap_poll(VLANClientState *nc, bool enable)

     tap_write_poll(s, enable);

 }

+int tap_get_fd(VLANClientState *nc)

+{

+    TAPState *s = DO_UPCAST(TAPState, nc, nc);

+    assert(nc->info->type == NET_CLIENT_TYPE_TAP);

+    return s->fd;

+}

+

 /* fd support */

 static NetClientInfo net_tap_info = {

diff --git a/net/tap.h b/net/tap.h

index 538a562..a244b28 100644

--- a/net/tap.h

+++ b/net/tap.h

@@ -48,4 +48,6 @@ int tap_probe_vnet_hdr(int fd);

 int tap_probe_has_ufo(int fd);

 void tap_fd_set_offload(int fd, int csum, int tso4, int tso6, int ecn, int ufo);

+int tap_get_fd(VLANClientState *vc);

+

 #endif /* QEMU_NET_TAP_H */

-- 

1.6.6.144.g5c3af