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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>
DPDK is a set of libraries and drivers for fast packet processing. It supports many processor architectures and both FreeBSD and Linux. The DPDK uses the Open Source BSD-3-Clause license for the core libraries and drivers. The kernel components are GPL-2.0 licensed. Please check the doc directory for release notes, API documentation, and sample application information. For questions and usage discussions, subscribe to: users@dpdk.org Report bugs and issues to the development mailing list: dev@dpdk.org