What does (or should) rte_eth_dev_set_mtu() do? The documentation says
"Change the MTU of an Ethernet device." At least of few of the PMDs do
something similar to the following:
eth_em_infos_get(dev, &dev_info);
frame_size = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN + ...
/* check that mtu is within the allowed range */
if ((mtu < ETHER_MIN_MTU) || (frame_size > dev_info.max_rx_pktlen))
return -EINVAL;
/* update max frame size */
dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
What does max_rx_pkt_len mean here? MRU or is pkt here really frame?
