[PATCH v2 2/2] examples/vhost: unconfigure DMA vchannel

[xuan.ding at intel.com]

From: Xuan Ding <xuan.ding at intel.com>

This patch applies rte_vhost_async_dma_unconfigure() API
to manually free 'dma_copy_track' array instead of waiting
until the program ends to be released.

Signed-off-by: Xuan Ding <xuan.ding at intel.com>
---
 examples/vhost/main.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/examples/vhost/main.c b/examples/vhost/main.c
index 7e1666f42a..1754d9ee27 100644
--- a/examples/vhost/main.c
+++ b/examples/vhost/main.c
@@ -1624,6 +1624,13 @@ destroy_device(int vid)
 		dma_bind[vid].dmas[VIRTIO_TXQ].async_enabled = false;
 	}
 
+	for (i = 0; i < dma_count; i++) {
+		if (rte_vhost_async_dma_unconfigure(dmas_id[i], 0) < 0) {
+			RTE_LOG(ERR, VHOST_PORT, "Failed to unconfigure DMA in vhost.\n");
+			rte_exit(EXIT_FAILURE, "Cannot use given DMA device\n");
+		}
+	}
+
 	rte_free(vdev);
 }
 
-- 
2.17.1