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hw/virtio: Support set_config() callback in vhost-user-base 

The Virtio input device invokes set_config() callback for retrieving
the event configuration info, but the callback is not supported in
vhost-user-base.

This patch adds support set_config() callback in vhost-user-base.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20231120043721.50555-2-leo.yan@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240104210945.1223134-9-alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Leo Yan 2024-01-04 21:09:42 +00:00 committed by Michael S. Tsirkin
parent e7fe912276
commit a26105dd56
1 changed files with 17 additions and 0 deletions
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17
hw/virtio/vhost-user-base.c
View File

@ -140,6 +140,22 @@ static void vub_get_config(VirtIODevice *vdev, uint8_t *config)
}
}
static void vub_set_config(VirtIODevice *vdev, const uint8_t *config_data)
{
VHostUserBase *vub = VHOST_USER_BASE(vdev);
int ret;
g_assert(vub->config_size && vub->vhost_user.supports_config == true);
ret = vhost_dev_set_config(&vub->vhost_dev, config_data,
0, vub->config_size,
VHOST_SET_CONFIG_TYPE_FRONTEND);
if (ret) {
error_report("vhost guest set device config space failed: %d", ret);
return;
}
}
/*
* When the daemon signals an update to the config we just need to
* signal the guest as we re-read the config on demand above.
@ -337,6 +353,7 @@ static void vub_class_init(ObjectClass *klass, void *data)
vdc->unrealize = vub_device_unrealize;
vdc->get_features = vub_get_features;
vdc->get_config = vub_get_config;
vdc->set_config = vub_set_config;
vdc->set_status = vub_set_status;
}