From 305f4b2453448402c1994caef8d8e01923660ff3 Mon Sep 17 00:00:00 2001
From: Jens Freimann <jfreimann@redhat.com>
Date: Tue, 6 Feb 2018 08:51:49 -0500
Subject: [PATCH] net/virtio: disable ctrl virtqueue for packed rings

Signed-off-by: Jens Freiman <jfreimann@redhat.com>
---
 drivers/net/virtio/virtio_ethdev.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 7a6dd1586..bc8cc6051 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1206,6 +1206,13 @@ virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
 			req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
 	}
 
+	if (req_features & (1ULL << VIRTIO_F_PACKED)) {
+		req_features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR);
+		req_features &= ~(1ull << VIRTIO_NET_F_CTRL_VQ);
+		req_features &= ~(1ull << VIRTIO_NET_F_CTRL_RX);
+		req_features &= ~(1ull << VIRTIO_NET_F_CTRL_VLAN);
+	}
+
 	/*
 	 * Negotiate features: Subset of device feature bits are written back
 	 * guest feature bits.