From 45c55d39c5ebb8f8e1e70401dd0492f6c935455b Mon Sep 17 00:00:00 2001
From: Marcel Apfelbaum <marcel@redhat.com>
Date: Tue, 3 Nov 2015 13:28:41 +0200
Subject: [PATCH] vhost: fix build with old kernels

Commit 15e9ee6982a4822ce395fd597dd500a61ceafa7c
uses the VIRTIO_F_VERSION_1 macro existing only in newer kernels.

Fixed it by manually defining it for older kernels.

Fixes: 15e9ee6982a4 ("vhost: enable virtio 1.0")

Reported-by: Qian Xu <qian.q.xu@intel.com>
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
---
 lib/librte_vhost/rte_virtio_net.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
index b6386f91c3..568745227d 100644
--- a/lib/librte_vhost/rte_virtio_net.h
+++ b/lib/librte_vhost/rte_virtio_net.h
@@ -108,6 +108,13 @@ struct vhost_virtqueue {
  #define VHOST_SUPPORTS_MQ	0
 #endif
 
+/*
+ * Define virtio 1.0 for older kernels
+ */
+#ifndef VIRTIO_F_VERSION_1
+ #define VIRTIO_F_VERSION_1 32
+#endif
+
 /**
  * Device structure contains all configuration information relating to the device.
  */
-- 
2.20.1