net/iavf: fix scattered Rx enabling

No need to add additional vlan tag size for max packet size,
the queue's Rx Max Frame Size (rxq->max_pkt_len) already
includes the vlan header size in iavf.

Fixes: 69dd4c3d0898 ("net/avf: enable queue and device")
Cc: stable@dpdk.org
Signed-off-by: Steve Yang <stevex.yang@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>

diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index 28ca3fa..ec4b1a1 100644 (file)
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -286,7 +286,7 @@ iavf_init_rxq(struct rte_eth_dev *dev, struct iavf_rx_queue *rxq)
 
        rxq->max_pkt_len = max_pkt_len;
        if ((dev_data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_SCATTER) ||
-           (rxq->max_pkt_len + 2 * IAVF_VLAN_TAG_SIZE) > buf_size) {
+           rxq->max_pkt_len > buf_size) {
                dev_data->scattered_rx = 1;
        }
        IAVF_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1);