[dpdk-dev] [PATCH] net/virtio: init MTU in case no control channel

[zhike wang]

The max_mtu is kept as zero in case no CRTL channel, which leads
to failure when calling virtio_mtu_set().

Signed-off-by: zhike wang <wangzh...@jd.com>
---
 drivers/net/virtio/virtio_ethdev.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/virtio/virtio_ethdev.c 
b/drivers/net/virtio/virtio_ethdev.c
index 21f2131..b7b3364 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1479,6 +1479,8 @@ static int virtio_dev_xstats_get_names(struct rte_eth_dev 
*dev,
        } else {
                PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
                hw->max_queue_pairs = 1;
+               hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
+                       VLAN_TAG_LEN - hw->vtnet_hdr_size;
        }
 
        ret = virtio_alloc_queues(eth_dev);
-- 
1.8.3.1