From 240da8b2143b7be372cf6388f028b26b15f16776 Mon Sep 17 00:00:00 2001
From: Zhike Wang <wangzhike@jd.com>
Date: Fri, 5 Jan 2018 02:28:06 -0800
Subject: [PATCH] net/virtio: init MTU in case no control channel
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 <wangzhike@jd.com>
Acked-by: Zhiyong Yang <zhiyong.yang@intel.com>
Acked-by: Yuanhan Liu <yliu@fridaylinux.org>
---
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 ebb968c4bb..954989efc0 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1482,6 +1482,8 @@ virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
} 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);
--
2.39.5