On Fri, 18 Oct 2024 22:05:24 +0530 Rajasekhar Pulluru <pullururajasek...@gmail.com> wrote:
> Team, > Does setting mtu using rte_eth_dev_set_mtu limit the maximum size of the > packet received on the dpdk port to the configured mtu size? > > On an intel machine with ixgbe port, with mtu set to 1500, no rx-offloads > enabled, ixgbe dpdk port is able to receive packets greater than 1500 size > and even jumbo frames of size 9000, even though the peer is sending them > fragmented with mtu of 1500. > > How do I restrict the port not to receive any frame greater than mtu size? > > Appreciate any help, > Thanks. > Rajasekhar In networking, MTU and MRU are overlapping concepts. The MTU value is used as a hint to the driver as to what size buffer to allocate but it can use larger if it wants. If you have restrictions, then the application needs to enforce them.
