vdpa/sfc: get VFIO device file descriptor

Implement vDPA ops get_vfio_device_fd to get the VFIO device fd.

Signed-off-by: Vijay Kumar Srivastava <vsrivast@xilinx.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>

diff --git a/drivers/vdpa/sfc/sfc_vdpa_ops.c b/drivers/vdpa/sfc/sfc_vdpa_ops.c
index 63192cf..199f124 100644 (file)
--- a/drivers/vdpa/sfc/sfc_vdpa_ops.c
+++ b/drivers/vdpa/sfc/sfc_vdpa_ops.c
@@ -145,6 +145,29 @@ sfc_vdpa_set_features(int vid)
        return -1;
 }
 
+static int
+sfc_vdpa_get_vfio_device_fd(int vid)
+{
+       struct rte_vdpa_device *vdpa_dev;
+       struct sfc_vdpa_ops_data *ops_data;
+       int vfio_dev_fd;
+       void *dev;
+
+       vdpa_dev = rte_vhost_get_vdpa_device(vid);
+
+       ops_data = sfc_vdpa_get_data_by_dev(vdpa_dev);
+       if (ops_data == NULL)
+               return -1;
+
+       dev = ops_data->dev_handle;
+       vfio_dev_fd = sfc_vdpa_adapter_by_dev_handle(dev)->vfio_dev_fd;
+
+       sfc_vdpa_info(dev, "vDPA ops get_vfio_device_fd :: vfio fd : %d",
+                     vfio_dev_fd);
+
+       return vfio_dev_fd;
+}
+
 static struct rte_vdpa_dev_ops sfc_vdpa_ops = {
        .get_queue_num = sfc_vdpa_get_queue_num,
        .get_features = sfc_vdpa_get_features,
@@ -153,6 +176,7 @@ static struct rte_vdpa_dev_ops sfc_vdpa_ops = {
        .dev_close = sfc_vdpa_dev_close,
        .set_vring_state = sfc_vdpa_set_vring_state,
        .set_features = sfc_vdpa_set_features,
+       .get_vfio_device_fd = sfc_vdpa_get_vfio_device_fd,
 };
 
 struct sfc_vdpa_ops_data *