expose steering counters on debugfs
configname: CONFIG_MLX5_VDPA_STEERING_DEBUG
Linux Kernel Configuration
└─>Device Drivers
└─>vDPA drivers
└─>expose steering counters on debugfs
In linux kernel since version 6.3 (release Date: 2023-04-23)
Expose RX steering counters in debugfs to aid in debugging. For each VLAN
or non VLAN interface, two hardware counters are added to the RX flow
table: one for unicast and one for multicast.
The counters counts the number of packets and bytes and exposes them in
debugfs. Once can read the counters using, e.g.:
cat /sys/kernel/debug/mlx5/mlx5_core.sf.1/vdpa-0/rx/untagged/ucast/packets
cat /sys/kernel/debug/mlx5/mlx5_core.sf.1/vdpa-0/rx/untagged/mcast/bytes
or non VLAN interface, two hardware counters are added to the RX flow
table: one for unicast and one for multicast.
The counters counts the number of packets and bytes and exposes them in
debugfs. Once can read the counters using, e.g.:
cat /sys/kernel/debug/mlx5/mlx5_core.sf.1/vdpa-0/rx/untagged/ucast/packets
cat /sys/kernel/debug/mlx5/mlx5_core.sf.1/vdpa-0/rx/untagged/mcast/bytes