From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Date: Tue, 8 Mar 2016 08:51:21 +0000 (+0800)
Subject: vhost: fix build with kernel < 3.5
X-Git-Tag: spdx-start~7475
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=6fe390eed0f0aae9479f9cdbe4f4bb46c27aef63;p=dpdk.git

vhost: fix build with kernel < 3.5

VIRTIO_NET_F_GUEST_ANNOUNCE is a new feature introduced since kernel
v3.5. For older kernels (or more precisely, old distributions), we
could simply define it manually, to fix the "macro not defined" error.

Fixes: d293dac8f30e ("vhost: claim support of guest announce")

Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
---

diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
index 7d1fde2025..443245dc68 100644
--- a/lib/librte_vhost/rte_virtio_net.h
+++ b/lib/librte_vhost/rte_virtio_net.h
@@ -97,6 +97,11 @@ struct vhost_virtqueue {
 	struct buf_vector	buf_vec[BUF_VECTOR_MAX];	/**< for scatter RX. */
 } __rte_cache_aligned;
 
+/* Old kernels have no such macro defined */
+#ifndef VIRTIO_NET_F_GUEST_ANNOUNCE
+ #define VIRTIO_NET_F_GUEST_ANNOUNCE 21
+#endif
+
 
 /*
  * Make an extra wrapper for VIRTIO_NET_F_MQ and