[PATCH net-next v3 0/3] netdevsim: add support for PHY devices

[Maxime Chevallier <maxime.chevallier@bootlin.com>]

Hi everyone,

Here's a V3 for the netdevsim PHY support. This V3 includes :
 - A fix for a compiling issue with PHYLIB=n
 - An updated KConfig to only allow PHYLIB=y|n
 - Converted the link setting file to a bool debugfs file, relying on
   link state polling

The idea of this series is to allow attaching virtual PHY devices to
netdevsim, so that we can test PHY-related ethtool commands. This can be
extended in the future for phylib testing as well.

V2: https://lore.kernel.org/netdev/20250708115531.111326-1-maxime.chevallier@bootlin.com/
 - Fix building with PHYLIB=m
 - Use shellcheck on the shell scripts

V1: https://lore.kernel.org/netdev/20250702082806.706973-1-maxime.chevallier@bootlin.com/

Maxime Chevallier (3):
  net: netdevsim: Add PHY support in netdevsim
  selftests: ethtool: Drop the unused old_netdevs variable
  selftests: ethtool: Introduce ethernet PHY selftests on netdevsim

 drivers/net/Kconfig                           |   1 +
 drivers/net/netdevsim/Makefile                |   4 +
 drivers/net/netdevsim/dev.c                   |   2 +
 drivers/net/netdevsim/netdev.c                |   8 +
 drivers/net/netdevsim/netdevsim.h             |  25 ++
 drivers/net/netdevsim/phy.c                   | 375 ++++++++++++++++++
 .../selftests/drivers/net/netdevsim/config    |   1 +
 .../drivers/net/netdevsim/ethtool-common.sh   |  19 +-
 .../drivers/net/netdevsim/ethtool-phy.sh      |  64 +++
 9 files changed, 496 insertions(+), 3 deletions(-)
 create mode 100644 drivers/net/netdevsim/phy.c
 create mode 100755 tools/testing/selftests/drivers/net/netdevsim/ethtool-phy.sh

-- 
2.49.0