numam-dpdk/doc
Shahaf Shuler f9de87187b net/mlx5: disable ConnectX-4 Lx Multi Packet Send by default
On ConnectX-4 Lx the Multi Packet Send (MPW) feature is considered
un-secure, as on some cases were the application provides incorrect mbufs
on the Tx burst the host or NIC can get stuck.

Hence, disabling the feature by default for this specific NIC.
Users can still enable this feature and enjoy the performance gain
(mostly for low number of cores) by using the txq_mpw_en devarg.

This patch will impact the out of the box performance of some application
using ConnectX-4 Lx for the sack of security and robustness.

Since we need different defaults based on the underlying device the mpw
field in the configuration struct was extended to contain also the
MLX5_ARG_UNSET option.

Cc: stable@dpdk.org

Signed-off-by: Shahaf Shuler <shahafs@mellanox.com>
Acked-by: Yongseok Koh <yskoh@mellanox.com>
2018-08-28 15:27:39 +02:00
..
api use SPDX tag for 6WIND copyrighted files 2018-05-25 10:47:06 +02:00
guides net/mlx5: disable ConnectX-4 Lx Multi Packet Send by default 2018-08-28 15:27:39 +02:00
logo doc: change theme of guides 2015-12-13 22:30:47 +01:00
build-sdk-meson.txt build: support vendor specific ARM cross builds 2018-01-30 21:59:00 +01:00
build-sdk-quick.txt doc: add tags and cscope make targets to quick help 2017-08-05 11:04:47 +02:00