avf: tx dequeue optimizations

[vpp.git] / src / plugins / avf / device.c

diff --git a/src/plugins/avf/device.c b/src/plugins/avf/device.c
index 9a8afa2..f6a00a1 100644 (file)
--- a/src/plugins/avf/device.c
+++ b/src/plugins/avf/device.c
@@ -16,6 +16,7 @@
  */
 
 #include <vlib/vlib.h>
+#include <vppinfra/ring.h>
 #include <vlib/unix/unix.h>
 #include <vlib/pci/pci.h>
 #include <vnet/ethernet/ethernet.h>
@@ -289,6 +290,9 @@ avf_txq_init (vlib_main_t * vm, avf_device_t * ad, u16 qid, u16 txq_size)
   vec_validate_aligned (txq->bufs, txq->size, CLIB_CACHE_LINE_BYTES);
   txq->qtx_tail = ad->bar0 + AVF_QTX_TAIL (qid);
 
+  /* initialize ring of pending RS slots */
+  clib_ring_new_aligned (txq->rs_slots, 32, CLIB_CACHE_LINE_BYTES);
+
   ad->n_tx_queues = clib_min (ad->num_queue_pairs, qid + 1);
   return 0;
 }
@@ -1166,6 +1170,7 @@ avf_delete_if (vlib_main_t * vm, avf_device_t * ad)
                                      txq->n_enqueued);
        }
       vec_free (txq->bufs);
+      clib_ring_free (txq->rs_slots);
     }
   /* *INDENT-ON* */
   vec_free (ad->txqs);