[dpdk-dev] [PATCH] virtio: fix crash if VIRTIO_NET_F_CTRL_VQ is not negotiated

[damar...@cisco.com]

From: Damjan Marion <damar...@cisco.com>

If VIRTIO_NET_F_CTRL_VQ is not negotiated hw->cvq will be NULL

Signed-off-by: Damjan Marion <damarion at cisco.com>
---
 lib/librte_pmd_virtio/virtio_rxtx.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/librte_pmd_virtio/virtio_rxtx.c 
b/lib/librte_pmd_virtio/virtio_rxtx.c
index 0b10108..8cb635e 100644
--- a/lib/librte_pmd_virtio/virtio_rxtx.c
+++ b/lib/librte_pmd_virtio/virtio_rxtx.c
@@ -328,8 +328,10 @@ virtio_dev_cq_start(struct rte_eth_dev *dev)
        struct virtio_hw *hw
                = VIRTIO_DEV_PRIVATE_TO_HW(dev->data->dev_private);

-       virtio_dev_vring_start(hw->cvq, VTNET_CQ);
-       VIRTQUEUE_DUMP((struct virtqueue *)hw->cvq);
+       if (hw->cvq) {
+               virtio_dev_vring_start(hw->cvq, VTNET_CQ);
+               VIRTQUEUE_DUMP((struct virtqueue *)hw->cvq);
+       }
 }

 void
-- 
2.1.0