Thanks Stephen. On Fri, Oct 18, 2024 at 10:13 PM Stephen Hemminger < step...@networkplumber.org> wrote:
> 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. >
