netdev - [PATCH for-3.7] vhost: fix mergeable bufs on BE hosts

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Message-ID: <20121015175534.GA19489@redhat.com>
Date:	Mon, 15 Oct 2012 19:55:34 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Alexander Graf <agraf@...e.de>
Cc:	netdev@...r.kernel.org, kvm@...r.kernel.org,
	virtualization@...ts.linux-foundation.org, stable@...nel.org
Subject: [PATCH for-3.7] vhost: fix mergeable bufs on BE hosts

We copy head count to a 16 bit field,
this works by chance on LE but on BE
guest gets 0. Fix it up.

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
Tested-by: Alexander Graf <agraf@...e.de>
Cc: stable@...nel.org

---
 drivers/vhost/net.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 9ab6d47..2bb463c 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -448,7 +448,8 @@ static void handle_rx(struct vhost_net *net)
 		.hdr.gso_type = VIRTIO_NET_HDR_GSO_NONE
 	};
 	size_t total_len = 0;
-	int err, headcount, mergeable;
+	int err, mergeable;
+	s16 headcount;
 	size_t vhost_hlen, sock_hlen;
 	size_t vhost_len, sock_len;
 	/* TODO: check that we are running from vhost_worker? */
-- 
MST
--
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