net: Add is_vhost_user flag to vhost_net struct

Introduce a boolean is_vhost_user field to the vhost_net
structure. This flag is initialized during vhost_net_init based
on whether the backend is vhost-user.

This refactoring simplifies checks for vhost-user specific behavior,
replacing direct comparisons of 'net->nc->info->type' with the new
flag. It improves readability and encapsulates the backend type
information directly within the vhost_net instance.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

2 files changed, 2 insertions, 0 deletions

diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index a62992c819..f178cf9e1d 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -147,6 +147,7 @@ struct vhost_net {
     const int *feature_bits;
     int max_tx_queue_size;
     SaveAcketFeatures *save_acked_features;
+    bool is_vhost_user;
     NetClientState *nc;
 };
 
diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h
index 8f4fddfb69..879781dad7 100644
--- a/include/net/vhost_net.h
+++ b/include/net/vhost_net.h
@@ -17,6 +17,7 @@ typedef struct VhostNetOptions {
     unsigned int nvqs;
     const int *feature_bits;
     int max_tx_queue_size;
+    bool is_vhost_user;
     GetAckedFeatures *get_acked_features;
     SaveAcketFeatures *save_acked_features;
     void *opaque;