[dpdk-dev] [PATCH] net/mlx5: fix the legacy multi packet write session

Matan Azrad matan at mellanox.com
Mon Feb 10 16:08:11 CET 2020



From: Viacheslav Ovsiienko
> To provide the better PCIe bandwidth utilization the ConnectX-4LX NIC
> supports the multi-packet write (MPW) sessions allowing to pack multiple
> packets into one descriptor (WQE). This is legacy feature and it has some
> limitations on the packets and data description segments. To provide the
> best performance all inline packets must be put into shared data segment
> and the total length of MPW session must be limited. The limit is controlled
> with txq_inline_mpw devarg.
> 
> Fixes: 82e75f8323bf ("net/mlx5: fix legacy multi-packet Tx descriptors")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo at mellanox.com>
Acked-by: Matan Azrad <matan at mellanox.com>


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