Thu, Jan 14, 2021 at 03:07:18AM CET, andrew@lunn.ch wrote:

quoted

$ devlink lc provision netdevsim/netdevsim10 lc 0 type card4ports
$ devlink lc
netdevsim/netdevsim10:
  lc 0 state provisioned type card4ports
    supported_types:
       card1port card2ports card4ports
  lc 1 state unprovisioned
    supported_types:
       card1port card2ports card4ports

Hi Jiri

quoted

# Now activate the line card using debugfs. That emulates plug-in event
# on real hardware:
$ echo "Y"> /sys/kernel/debug/netdevsim/netdevsim10/linecards/0/active
$ ip link show eni10nl0p1
165: eni10nl0p1: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
    link/ether 7e:2d:05:93:d3:d1 brd ff:ff:ff:ff:ff:ff
# The carrier is UP now.

What is missing from the devlink lc view is what line card is actually
in the slot. Say if i provision for a card4port, but actually insert a
card2port. It would be nice to have something like:

I checked, our hw does not support that. Only provides info that
linecard activation was/wasn't successful.

$ devlink lc
netdevsim/netdevsim10:
  lc 0 state provisioned type card4ports
    supported_types:
       card1port card2ports card4ports
    inserted_type:
       card2ports;
  lc 1 state unprovisioned
    supported_types:
       card1port card2ports card4ports
    inserted_type:
       None

I assume if i prevision for card4ports but actually install a
card2ports, all the interfaces stay down?

Maybe

quoted

$ echo "Y"> /sys/kernel/debug/netdevsim/netdevsim10/linecards/0/active

should actually be
   echo "card2ports" > /sys/kernel/debug/netdevsim/netdevsim10/linecards/0/active

so you can emulate somebody putting the wrong card in the slot?

   Andrew