[PATCH] vhost: enable CONFIG feature

[Hao Chen <chenh@yusur.tech>]

Enable this feature, so that libvirt or qemu can call vdpa vendor
driver's ops '.get_config' through 'vhost_net_get_config' to get
the mac address of the vdpa hardware without manual configuration.

Signed-off-by: Hao Chen <chenh@yusur.tech>
---
 lib/vhost/vhost_user.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/vhost/vhost_user.h b/lib/vhost/vhost_user.h
index 8ecca68597..12e8d116f3 100644
--- a/lib/vhost/vhost_user.h
+++ b/lib/vhost/vhost_user.h
@@ -23,7 +23,8 @@
 					 (1ULL << VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD) | \
 					 (1ULL << VHOST_USER_PROTOCOL_F_HOST_NOTIFIER) | \
 					 (1ULL << VHOST_USER_PROTOCOL_F_PAGEFAULT) | \
-					 (1ULL << VHOST_USER_PROTOCOL_F_STATUS))
+					 (1ULL << VHOST_USER_PROTOCOL_F_STATUS) | \
+					 (1ULL << VHOST_USER_PROTOCOL_F_CONFIG))
 
 typedef enum VhostUserRequest {
 	VHOST_USER_NONE = 0,
-- 
2.34.1