* [dpdk-dev] [RFC v1] net/mlx5: support new completion field for Multi-Packet RQ
@ 2018-06-08 0:39 Yongseok Koh
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From: Yongseok Koh @ 2018-06-08 0:39 UTC (permalink / raw)
To: Nélio Laranjeiro, Adrien Mazarguil; +Cc: Shahaf Shuler, dev
Multi-Packet Receive Queue is to receive multiple packets on a single large
buffer. As it is supposed to have Rx CQEs in order from HW,
'consumed_stride' in CQE is accumulated to keep track of the current stride
index. However, it is safer to directly use 'stride_idx' in CQE to avoid
out-of-order situation which can possibly be caused by introducing new
features in the future.
If Rx CQE compression is enabled, HW can be configured to store the
'stride_idx' in a mini-CQE but this will need newer version of
library/driver along with firmware changes.
Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
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