From: Ivan Dyukov <i.dyukov@samsung.com>
Date: Wed, 28 Jun 2017 12:40:31 +0000 (+0300)
Subject: vhost: fix checking of device features
X-Git-Tag: spdx-start~2710
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=c665d9a231945181af0a6e6fbeae7f56657f964a;p=dpdk.git

vhost: fix checking of device features

To compare enabled features in current device we must use bit
mask instead of bit position.

Fixes: c843af3aa13e ("vhost: access header only if offloading is supported")
Cc: stable@dpdk.org

Signed-off-by: Ivan Dyukov <i.dyukov@samsung.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
---

diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
index 88b74f172c..a5f0eebaa8 100644
--- a/lib/librte_vhost/virtio_net.c
+++ b/lib/librte_vhost/virtio_net.c
@@ -615,9 +615,11 @@ static inline bool
 virtio_net_with_host_offload(struct virtio_net *dev)
 {
 	if (dev->features &
-			(VIRTIO_NET_F_CSUM | VIRTIO_NET_F_HOST_ECN |
-			 VIRTIO_NET_F_HOST_TSO4 | VIRTIO_NET_F_HOST_TSO6 |
-			 VIRTIO_NET_F_HOST_UFO))
+			((1ULL << VIRTIO_NET_F_CSUM) |
+			 (1ULL << VIRTIO_NET_F_HOST_ECN) |
+			 (1ULL << VIRTIO_NET_F_HOST_TSO4) |
+			 (1ULL << VIRTIO_NET_F_HOST_TSO6) |
+			 (1ULL << VIRTIO_NET_F_HOST_UFO)))
 		return true;
 
 	return false;