[PATCH v1 2/2] vduse: enable Virtio-net device type

Maxime Coquelin
2023-06-27T11:38:15Z

This patch adds Virtio-net device type to the supported
devices types. Initialization fails if the device does
not support VIRTIO_F_VERSION_1 feature, in order to
guarantee the configuration space is read-only.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
drivers/vdpa/vdpa_user/vduse_dev.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vduse_dev.c
index c1c2f4c711ae..89088fa27026 100644
--- a/drivers/vdpa/vdpa_user/vduse_dev.c
+++ b/drivers/vdpa/vdpa_user/vduse_dev.c
@@ -142,6 +142,7 @@ static struct workqueue_struct *vduse_irq_bound_wq;

static u32 allowed_device_id[] = {
VIRTIO_ID_BLOCK,
+ VIRTIO_ID_NET,
};

static inline struct vduse_dev *vdpa_to_vduse(struct vdpa_device *vdpa)
@@ -1668,6 +1669,10 @@ static bool features_is_valid(struct vduse_dev_config *config)
(config->features & (1ULL << VIRTIO_BLK_F_CONFIG_WCE)))
return false;

+ if ((config->device_id == VIRTIO_ID_NET) &&
+ !(config->features & (1ULL << VIRTIO_F_VERSION_1)))
+ return false;
+
return true;
}

@@ -2023,6 +2028,7 @@ static const struct vdpa_mgmtdev_ops vdpa_dev_mgmtdev_ops = {

static struct virtio_device_id id_table[] = {
{ VIRTIO_ID_BLOCK, VIRTIO_DEV_ANY_ID },
+ { VIRTIO_ID_NET, VIRTIO_DEV_ANY_ID },
{ 0 },
};

--
2.41.0