[dpdk-dev] [PATCH 4/7] net/virtio: adapt Virtio-user status size

[Maxime Coquelin]

Set proper payload size for set/get status message. The payload
size varies according to backend types.

Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
Signed-off-by: Patrick Fu <patrick.fu at intel.com>
---
 .../net/virtio/virtio_user/virtio_user_dev.c  | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 93274b2a94..753611ef42 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -838,14 +838,18 @@ virtio_user_send_status_update(struct virtio_user_dev *dev, uint8_t status)
 	enum virtio_user_backend_type backend_type =
 				virtio_user_backend_type(dev->path);
 
-	/* Vhost-user only for now */
-	if (backend_type != VIRTIO_USER_BACKEND_VHOST_USER)
+	if (!(dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_STATUS)))
 		return 0;
 
-	if (!(dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_STATUS)))
+	if (backend_type == VIRTIO_USER_BACKEND_VHOST_USER)
+		ret = dev->ops->send_request(dev,
+				VHOST_USER_SET_STATUS, &arg);
+	else if (backend_type == VIRTIO_USER_BACKEND_VHOST_VDPA)
+		ret = dev->ops->send_request(dev,
+				VHOST_USER_SET_STATUS, &status);
+	else
 		return 0;
 
-	ret = dev->ops->send_request(dev, VHOST_USER_SET_STATUS, &arg);
 	if (ret) {
 		PMD_INIT_LOG(ERR, "VHOST_USER_SET_STATUS failed (%d): %s", ret,
 			     strerror(errno));
@@ -858,7 +862,7 @@ virtio_user_send_status_update(struct virtio_user_dev *dev, uint8_t status)
 int
 virtio_user_update_status(struct virtio_user_dev *dev)
 {
-	uint64_t ret;
+	uint8_t ret;
 	int err;
 	enum virtio_user_backend_type backend_type =
 				virtio_user_backend_type(dev->path);
@@ -876,11 +880,6 @@ virtio_user_update_status(struct virtio_user_dev *dev)
 			     strerror(errno));
 		return -1;
 	}
-	if (ret > UINT8_MAX) {
-		PMD_INIT_LOG(ERR, "Invalid VHOST_USER_GET_STATUS "
-				"response 0x%" PRIx64 "\n", ret);
-		return -1;
-	}
 
 	dev->status = ret;
 	PMD_INIT_LOG(DEBUG, "Updated Device Status(0x%08x):\n"
-- 
2.26.2