net/af_xdp: specify minimal and maximal MTU

Properly report mtu capability in port device info.

Reported-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>

diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c
index 5cc643c..c46916b 100644 (file)
--- a/drivers/net/af_xdp/rte_eth_af_xdp.c
+++ b/drivers/net/af_xdp/rte_eth_af_xdp.c
@@ -351,6 +351,9 @@ eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
        dev_info->max_rx_queues = 1;
        dev_info->max_tx_queues = 1;
 
+       dev_info->min_mtu = ETHER_MIN_MTU;
+       dev_info->max_mtu = ETH_AF_XDP_FRAME_SIZE - ETH_AF_XDP_DATA_HEADROOM;
+
        dev_info->default_rxportconf.nb_queues = 1;
        dev_info->default_txportconf.nb_queues = 1;
        dev_info->default_rxportconf.ring_size = ETH_AF_XDP_DFLT_NUM_DESCS;