vhost/test: fix build for vhost test

commit 264b563b8675771834419057cbe076c1a41fb666 upstream.

Since vhost_exceeds_weight() was introduced, callers need to specify
the packet weight and byte weight in vhost_dev_init(). Note that, the
packet weight isn't counted in this patch to keep the original behavior
unchanged.

Fixes: e82b9b0727ff ("vhost: introduce vhost_exceeds_weight()")
Cc: stable@vger.kernel.org
Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c
index 3cc98c0..682fc58 100644 (file)
--- a/drivers/vhost/test.c
+++ b/drivers/vhost/test.c
@@ -23,6 +23,12 @@
  * Using this limit prevents one virtqueue from starving others. */
 #define VHOST_TEST_WEIGHT 0x80000
 
+/* Max number of packets transferred before requeueing the job.
+ * Using this limit prevents one virtqueue from starving others with
+ * pkts.
+ */
+#define VHOST_TEST_PKT_WEIGHT 256
+
 enum {
        VHOST_TEST_VQ = 0,
        VHOST_TEST_VQ_MAX = 1,
@@ -81,10 +87,8 @@ static void handle_vq(struct vhost_test *n)
                }
                vhost_add_used_and_signal(&n->dev, vq, head, 0);
                total_len += len;
-               if (unlikely(total_len >= VHOST_TEST_WEIGHT)) {
-                       vhost_poll_queue(&vq->poll);
+               if (unlikely(vhost_exceeds_weight(vq, 0, total_len)))
                        break;
-               }
        }
 
        mutex_unlock(&vq->mutex);
@@ -116,7 +120,8 @@ static int vhost_test_open(struct inode *inode, struct file *f)
        dev = &n->dev;
        vqs[VHOST_TEST_VQ] = &n->vqs[VHOST_TEST_VQ];
        n->vqs[VHOST_TEST_VQ].handle_kick = handle_vq_kick;
-       vhost_dev_init(dev, vqs, VHOST_TEST_VQ_MAX);
+       vhost_dev_init(dev, vqs, VHOST_TEST_VQ_MAX,
+                      VHOST_TEST_PKT_WEIGHT, VHOST_TEST_WEIGHT);
 
        f->private_data = n;