sws

mlx_steering_dump_parser

This is Mellanox SW steering parser and triggering for dump files in CSV format.

For JSON dump parser please move to branch json_parser.

How to trigger a dump file generation

Dump generation is available in:

1. rdma-core:
    It can be done directly by calling mlx5dv_dump_dr_domain API or using mlx5_pmd
    To trigger DPDK app run:
        mlx_steering_dump_parser.py -p <DPDK PID> -f <dump_file>

2. Kernel SMFS on new OFED / Kernel Upstream (Linux kernel starting with 5.17 or MLNX_OFED >= 5.7):
    The steering information in CSV form can be read at the following path:
        /sys/kernel/debug/mlx5/<PCI>/steering/fdb/<domain_handle>
    Example:
        cat /sys/kernel/debug/mlx5/0000:82:00.0/steering/fdb/dmn_000018644 > dump_file
        mlx_steering_dump_parser.py -f dump_file

3. Kernel SMFS on older MLNX-OFED (versions before OFED 5.7):
    Generated by reading the proc file at the following path:
        cat /proc/driver/mlx5_core/smfs_dump/fdb/<PCI>
    Example:
        cat /proc/driver/mlx5_core/smfs_dump/fdb/0000:82:00.0 > dump_file
        mlx_steering_dump_parser.py -f dump_file

Running syntax

Flags	meaning
-f	path to file
-r	show raw data
-t	Show steering tree/hierarchy
-p	Trigger DPDK app
-v	Verbose view
-vv	Extra verbose view
-c	show colored prints

Running examples

example.csv is part of this porject can be viewed using:

mlx_steering_dump_parser.py -f example.csv
mlx_steering_dump_parser.py -f example.csv -t
mlx_steering_dump_parser.py -f example.csv -v
mlx_steering_dump_parser.py -f example.csv -tvv

Trigger a new testpmd dump using:

mlx_steering_dump_parser.py -p `pidof testpmd` -f new_dump.csv

Trigger a new kernel SMFS dump using new OFED/Upstream:

cat /sys/kernel/debug/mlx5/0000\:08\:00.0/steering/fdb/dmn_000000006c154714 > /new_dump.csv
mlx_steering_dump_parser.py -f /new_dump.csv

Trigger a new kernel SMFS dump using old OFED:

cat /proc/driver/mlx5_core/smfs_dump/fdb/0000\:82\:00.0 > /new_dump.csv
mlx_steering_dump_parser.py -f /new_dump.csv

Recommended packages

Python 2 or 3

Support

OFED kernel proc dump support from OFED 5.0.2

RDMA CORE user dump support from version 28.0

TESTPMD trigger dump support from version 17.11