virtio: fix mbuf headroom size check

check merge-able header as it is supported.
previously we don't support merge-able feature, so non merge-able
header is checked.

Fixes: 13ce5e7eb94f ("virtio: mergeable buffers")

Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index a0ef0a1..1115d45 100644 (file)
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1036,7 +1036,7 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
        struct rte_pci_device *pci_dev;
        int ret;
 
-       RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr));
+       RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
 
        eth_dev->dev_ops = &virtio_eth_dev_ops;
        eth_dev->tx_pkt_burst = &virtio_xmit_pkts;