Add support for VFIO_DMA_UNMAP_FLAG_ALL flag (#600)

* Add support for VFIO_DMA_UNMAP_FLAG_ALL flag

Signed-off-by: Swapnil Ingle <swapnil.ingle@nutanix.com>
Reviewed-by: John Levon <john.levon@nutanix.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/samples/client.c b/samples/client.c
index ef3202c..80a84d4 100644
--- a/samples/client.c
+++ b/samples/client.c
@@ -1302,6 +1302,19 @@ int main(int argc, char *argv[])
     handle_dma_io(sock, dma_regions + server_max_fds,
                   nr_dma_regions - server_max_fds,
                   dma_region_fds + server_max_fds);
+
+    struct vfio_user_dma_unmap r = {
+        .argsz = sizeof(r),
+        .addr = 0,
+        .size = 0,
+        .flags = VFIO_DMA_UNMAP_FLAG_ALL
+    };
+    ret = tran_sock_msg(sock, 8, VFIO_USER_DMA_UNMAP, &r, sizeof(r),
+                        NULL, &r, sizeof(r));
+    if (ret < 0) {
+        err(EXIT_FAILURE, "failed to unmap all DMA regions");
+    }
+
     return 0;
 }