[Qemu-devel] [PULL 2/7] libvhost-user: add PROTOCOL_F_CONFIG if {set, get}_config

[Gerd Hoffmann <kraxel@redhat.com>]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Add the config protocol feature bit if the set_config & get_config
callbacks are implemented.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20190503130034.24916-3-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 contrib/libvhost-user/libvhost-user.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c
index dcf4a969f238..74d42177c5c8 100644
--- a/contrib/libvhost-user/libvhost-user.c
+++ b/contrib/libvhost-user/libvhost-user.c
@@ -1157,6 +1157,10 @@ vu_get_protocol_features_exec(VuDev *dev, VhostUserMsg *vmsg)
         features |= 1ULL << VHOST_USER_PROTOCOL_F_PAGEFAULT;
     }
 
+    if (dev->iface->get_config && dev->iface->set_config) {
+        features |= 1ULL << VHOST_USER_PROTOCOL_F_CONFIG;
+    }
+
     if (dev->iface->get_protocol_features) {
         features |= dev->iface->get_protocol_features(dev);
     }
-- 
2.18.1