netdev - [PATCH net-next v2 0/7] netdevsim port add, delete support

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Date:   Sun, 7 Feb 2021 10:44:05 +0200
From:   Parav Pandit <parav@...dia.com>
To:     <netdev@...r.kernel.org>, <davem@...emloft.net>, <kuba@...nel.org>
CC:     Parav Pandit <parav@...dia.com>
Subject: [PATCH net-next v2 0/7] netdevsim port add, delete support

This series simulates one or more PCI PF and SF port addition and function
configuration functionality.

Example sequence:
Create a device with ID=10 and one physical port.
$ echo "10 1" > /sys/bus/netdevsim/new_device

Add PCI PF port:
$ devlink port add netdevsim/netdevsim10 flavour pcipf pfnum 2
netdevsim/netdevsim10/1: type eth netdev eth1 flavour pcipf controller 0 pfnum 2 external false splittable false
  function:
    hw_addr 00:00:00:00:00:00

$ devlink port add netdevsim/netdevsim10 flavour pcisf pfnum 2
netdevsim/netdevsim10/2: type eth netdev eth2 flavour pcisf controller 0 pfnum 2 sfnum 0 splittable false
  function:
    hw_addr 00:00:00:00:00:00

Show devlink port:
$ devlink port show netdevsim/netdevsim10/2
netdevsim/netdevsim10/2: type eth netdev eth2 flavour pcisf controller 0 pfnum 2 sfnum 0 splittable false
  function:
    hw_addr 00:00:00:00:00:00 state inactive opstate detached

Set the MAC address and activate the function:
$ devlink port function set netdevsim/netdevsim10/2 hw_addr 00:11:22:33:44:55 state active

Show the port and function attributes in JSON format:
$ devlink port show netdevsim/netdevsim10/2 -jp
{
    "port": {
        "netdevsim/netdevsim10/2": {
            "type": "eth",
            "netdev": "eth2",
            "flavour": "pcisf",
            "controller": 0,
            "pfnum": 2,
            "sfnum": 0,
            "splittable": false,
            "function": {
                "hw_addr": "00:11:22:33:44:55",
                "state": "active",
                "opstate": "attached"
            }
        }
    }
}

Delete PCI SF and PF ports:
$ devlink port del netdevsim/netdevsim10/2

Patch summary:
patch-1 adds support for adding/remove PCI PF port
patch-2 adds support for adding/remove PCI SF port
patch-3 simulates MAC address query
patch-4 simulates setting MAC address
patch-5 simulates state query
patch-6 simulates setting state
patch-7 adds tests

Parav Pandit (7):
  netdevsim: Add support for add and delete of a PCI PF port
  netdevsim: Add support for add and delete PCI SF port
  netdevsim: Simulate get hardware address of a PCI port
  netdevsim: Simulate set hardware address of a PCI port
  netdevsim: Simulate port function state for a PCI port
  netdevsim: Simulate port function set state for a PCI port
  netdevsim: Add netdevsim port add test cases

 drivers/net/netdevsim/Makefile                |   2 +-
 drivers/net/netdevsim/dev.c                   |  14 +
 drivers/net/netdevsim/netdevsim.h             |  38 ++
 drivers/net/netdevsim/port_function.c         | 521 ++++++++++++++++++
 .../drivers/net/netdevsim/devlink.sh          |  72 ++-
 5 files changed, 645 insertions(+), 2 deletions(-)
 create mode 100644 drivers/net/netdevsim/port_function.c

-- 
2.26.2