net: Consolidate vhost feature bits into vhost_net structure

Previously, the vhost_net_get_feature_bits() function in
hw/net/vhost_net.c used a large switch statement to determine
the appropriate feature bits based on the NetClientDriver type.

This created unnecessary coupling between the generic vhost layer
and specific network backends (like TAP, vhost-user, and
vhost-vdpa).

This patch moves the definition of vhost feature bits directly into the
vhost_net structure for each relevant network client.

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

3 files changed, 2 insertions, 2 deletions

diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index 38800a7..6a75fdc 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -143,6 +143,7 @@ struct vhost_net {
     struct vhost_dev dev;
     struct vhost_virtqueue vqs[2];
     int backend;
+    const int *feature_bits;
     NetClientState *nc;
 };
 
diff --git a/include/net/vhost-vdpa.h b/include/net/vhost-vdpa.h
index 916ead3..f8d7d6c 100644
--- a/include/net/vhost-vdpa.h
+++ b/include/net/vhost-vdpa.h
@@ -14,6 +14,4 @@
 
 #define TYPE_VHOST_VDPA "vhost-vdpa"
 
-extern const int vdpa_feature_bits[];
-
 #endif /* VHOST_VDPA_H */
diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h
index 0f40049..fbed373 100644
--- a/include/net/vhost_net.h
+++ b/include/net/vhost_net.h
@@ -12,6 +12,7 @@ typedef struct VhostNetOptions {
     NetClientState *net_backend;
     uint32_t busyloop_timeout;
     unsigned int nvqs;
+    const int *feature_bits;
     void *opaque;
 } VhostNetOptions;