From ee7ec972ebbba8403d3e692bac6b8dc7681c44d5 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@cloudius-systems.com>
Date: Fri, 7 Nov 2014 13:46:07 +0200
Subject: [PATCH] xen: request tx notification on tx completion

Otherwise, we never learn that transmission has completed and never
recycle ring entries.

This is still a little lame as we don't do any batching.
---
 net/xenfront.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/xenfront.cc b/net/xenfront.cc
index 2351a3ca81..a2b01bd56f 100644
--- a/net/xenfront.cc
+++ b/net/xenfront.cc
@@ -249,6 +249,7 @@ future<> xenfront_net_device::handle_tx_completions() {
         _tx_ring.entries.free_index(rsp.id);
     }
     _tx_ring.rsp_cons = prod;
+    _tx_ring._sring->rsp_event = prod + 1;
     return make_ready_future<>();
 }