From 9f979ef0e01a2dd47d167c482a9e2d1dcdff2d3f Mon Sep 17 00:00:00 2001 From: Paolo Abeni Date: Mon, 22 Sep 2025 16:18:22 +0200 Subject: vhost: add support for negotiating extended features Similar to virtio infra, vhost core maintains the features status in the full extended format and allows the devices to implement extended version of the getter/setter. Note that 'protocol_features' are not extended: they are only used by vhost-user, and the latter device is not going to implement extended features soon. Reviewed-by: Akihiko Odaki Acked-by: Jason Wang Acked-by: Stefano Garzarella Signed-off-by: Paolo Abeni Tested-by: Lei Yang Reviewed-by: Michael S. Tsirkin Message-ID: Signed-off-by: Michael S. Tsirkin --- include/hw/virtio/vhost-backend.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/hw/virtio/vhost-backend.h') diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-backend.h index d6df209a2f..ff94fa1734 100644 --- a/include/hw/virtio/vhost-backend.h +++ b/include/hw/virtio/vhost-backend.h @@ -95,6 +95,10 @@ typedef int (*vhost_new_worker_op)(struct vhost_dev *dev, struct vhost_worker_state *worker); typedef int (*vhost_free_worker_op)(struct vhost_dev *dev, struct vhost_worker_state *worker); +typedef int (*vhost_set_features_ex_op)(struct vhost_dev *dev, + const uint64_t *features); +typedef int (*vhost_get_features_ex_op)(struct vhost_dev *dev, + uint64_t *features); typedef int (*vhost_set_features_op)(struct vhost_dev *dev, uint64_t features); typedef int (*vhost_get_features_op)(struct vhost_dev *dev, @@ -186,6 +190,8 @@ typedef struct VhostOps { vhost_free_worker_op vhost_free_worker; vhost_get_vring_worker_op vhost_get_vring_worker; vhost_attach_vring_worker_op vhost_attach_vring_worker; + vhost_set_features_ex_op vhost_set_features_ex; + vhost_get_features_ex_op vhost_get_features_ex; vhost_set_features_op vhost_set_features; vhost_get_features_op vhost_get_features; vhost_set_backend_cap_op vhost_set_backend_cap; -- cgit 1.4.1