xen/netback: remove not needed test in xenvif_tx_build_gops()

The tests for the number of grant mapping or copy operations reaching
the array size of the operations buffer at the end of the main loop in
xenvif_tx_build_gops() isn't needed.

The loop can handle at maximum MAX_PENDING_REQS transfer requests, as
XEN_RING_NR_UNCONSUMED_REQUESTS() is taking unsent responses into
consideration, too.

Remove the tests.

Suggested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index 111c179..4943be4 100644 (file)
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -1082,10 +1082,6 @@ static void xenvif_tx_build_gops(struct xenvif_queue *queue,
                __skb_queue_tail(&queue->tx_queue, skb);
 
                queue->tx.req_cons = idx;
-
-               if ((*map_ops >= ARRAY_SIZE(queue->tx_map_ops)) ||
-                   (*copy_ops >= ARRAY_SIZE(queue->tx_copy_ops)))
-                       break;
        }
 
        return;