From 1f44e71cb2b6371f0626ae76a36a804d2c8eb90d Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@cloudius-systems.com>
Date: Tue, 30 Sep 2014 19:11:56 +0300
Subject: [PATCH] virtio: switch to circular_buffer

---
 net/virtio.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/virtio.cc b/net/virtio.cc
index f8afb467df..f68e007fbd 100644
--- a/net/virtio.cc
+++ b/net/virtio.cc
@@ -8,6 +8,7 @@
 #include "virtio-interface.hh"
 #include "core/reactor.hh"
 #include "core/stream.hh"
+#include "core/circular_buffer.hh"
 #include <atomic>
 #include <vector>
 #include <queue>
@@ -378,7 +379,7 @@ class virtio_net_device : public net::device {
         future<> post(packet p);
     private:
         future<std::vector<vring::buffer_chain>> transmit(semaphore& available);
-        std::queue<packet> _tx_queue;
+        std::queue<packet, circular_buffer<packet>> _tx_queue;
         semaphore _tx_queue_length = { 0 };
     };
     class rxq  {