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virtio-devices: vhost_user: Enable most virtio reserved features

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A lot of the VIRTIO reserved features should be supported or not by the
vhost-user backend. That means on the VMM side, these features should be
available, so that they don't get lost during the negotiation.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2021-05-21 18:26:00 +02:00
parent ff46fb69d0
commit 92c2101f7c
6 changed files with 63 additions and 38 deletions
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14
virtio-devices/src/vhost_user/mod.rs
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@@ -1,7 +1,12 @@
// Copyright 2019 Intel Corporation. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
use crate::{
VIRTIO_F_IN_ORDER, VIRTIO_F_NOTIFICATION_DATA, VIRTIO_F_ORDER_PLATFORM,
VIRTIO_F_RING_EVENT_IDX, VIRTIO_F_RING_INDIRECT_DESC, VIRTIO_F_RING_PACKED, VIRTIO_F_VERSION_1,
};
use std::io;
use vhost::vhost_user::message::VhostUserVirtioFeatures;
use vhost::Error as VhostError;
use vm_memory::Error as MmapError;
@@ -98,3 +103,12 @@ pub enum Error {
MissingIrqFd,
}
type Result<T> = std::result::Result<T, Error>;
pub const DEFAULT_VIRTIO_FEATURES: u64 = 1 << VIRTIO_F_RING_INDIRECT_DESC
| 1 << VIRTIO_F_RING_EVENT_IDX
| 1 << VIRTIO_F_VERSION_1
| 1 << VIRTIO_F_RING_PACKED
| 1 << VIRTIO_F_IN_ORDER
| 1 << VIRTIO_F_ORDER_PLATFORM
| 1 << VIRTIO_F_NOTIFICATION_DATA
| VhostUserVirtioFeatures::PROTOCOL_FEATURES.bits();