Jiawei Wang 3c4338a421 net/mlx5: optimize device spawn time with representors
During the device spawn process, mlx5 PMD queried the available flow
priorities by calling mlx5_flow_discover_priorities, queried
if the DR drop action was supported on the root table by calling
the mlx5_flow_discover_dr_action_support routine, and queried the
availability of metadata register C by calling mlx5_flow_discover_mreg_c

These functions created the test flows to get the supported fields, and
at the end destroyed the test flows. The test flows in the first two
functions was created on the root table.
If the device was spawned with multiple representors, these test flows
were created and destroyed on each representor as well. The above
operations took a significant amount of init time during the device
spawn.

This patch optimizes the device discover functions, if there is
the device with multiple representors (VF/SF) being spawned,
the priority and drop action and metadata register support check can be
done only ones and check results can be shared for all representors.

Signed-off-by: Jiawei Wang <jiaweiw@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
2021-10-27 14:04:39 +02:00
2021-10-25 15:30:23 +02:00
2021-05-18 19:06:56 +02:00
2021-08-17 08:37:52 +02:00
2021-08-17 08:37:52 +02:00
2020-09-07 23:51:57 +02:00
2021-10-25 22:42:47 +02:00

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
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