netdevsim devlink support¶
This document describes the devlink features supported by the
netdevsim device driver.
Parameters¶
| Name | Mode |
max_macs |
driverinit |
The netdevsim driver also implements the following driver-specific
parameters.
| Name | Type | Mode | Description |
test1 |
Boolean | driverinit | Test parameter used to show how a driver-specific devlink parameter can be implemented. |
The netdevsim driver supports reloading via DEVLINK_CMD_RELOAD
Regions¶
The netdevsim driver exposes a dummy region as an example of how the
devlink-region interfaces work. A snapshot is taken whenever the
take_snapshot debugfs file is written to.
Resources¶
The netdevsim driver exposes resources to control the number of FIB
entries, FIB rule entries and nexthops that the driver will allow.
$ devlink resource set netdevsim/netdevsim0 path /IPv4/fib size 96
$ devlink resource set netdevsim/netdevsim0 path /IPv4/fib-rules size 16
$ devlink resource set netdevsim/netdevsim0 path /IPv6/fib size 64
$ devlink resource set netdevsim/netdevsim0 path /IPv6/fib-rules size 16
$ devlink resource set netdevsim/netdevsim0 path /nexthops size 16
$ devlink dev reload netdevsim/netdevsim0
Driver-specific Traps¶
| Name | Type | Description |
fid_miss |
exception |
When a packet enters the device it is classified to a filtering indentifier (FID) based on the ingress port and VLAN. This trap is used to trap packets for which a FID could not be found |