netdev - [PATCH net-next v4 0/2] netdevsim: support setting a permanent address

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Message-Id: <20250710-netdevsim-perm_addr-v4-0-c9db2fecf3bf@redhat.com>
Date: Thu, 10 Jul 2025 13:18:32 +0200
From: Toke Høiland-Jørgensen <toke@...hat.com>
To: Jakub Kicinski <kuba@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>
Cc: netdev@...r.kernel.org, 
 Toke Høiland-Jørgensen <toke@...hat.com>
Subject: [PATCH net-next v4 0/2] netdevsim: support setting a permanent
 address

Network management daemons that match on the device permanent address
currently have no virtual interface types to test against.
NetworkManager, in particular, has carried an out of tree patch to set
the permanent address on netdevsim devices to use in its CI for this
purpose.

This series adds support to netdevsim to set a permanent address on port
creation, and adds a test script to test setting and getting of the
different L2 address types.

Signed-off-by: Toke Høiland-Jørgensen <toke@...hat.com>
---
Changes in v4:
- Check permaddr with is_valid_ether_addr() before setting
- Use ip -j and jq to parse address output
- Add a test that setting an invalid perm_addr fails
- Link to v3: https://lore.kernel.org/r/20250706-netdevsim-perm_addr-v3-0-88123e2b2027@redhat.com

Changes in v3:
- Fix shellcheck warnings in test script
- Link to v2: https://lore.kernel.org/r/20250702-netdevsim-perm_addr-v2-0-66359a6288f0@redhat.com

Changes in v2:
- Set the permanent address on port creation instead of through debugfs
- Add test script for testing L2 address setting and getting
- Link to v1: https://lore.kernel.org/r/20250203-netdevsim-perm_addr-v1-1-10084bc93044@redhat.com

---
Toke Høiland-Jørgensen (2):
      net: netdevsim: Support setting dev->perm_addr on port creation
      selftests: net: add netdev-l2addr.sh for testing L2 address functionality

 drivers/net/netdevsim/bus.c                  | 26 ++++++++++--
 drivers/net/netdevsim/dev.c                  | 14 +++----
 drivers/net/netdevsim/netdev.c               |  9 +++--
 drivers/net/netdevsim/netdevsim.h            |  9 +++--
 tools/testing/selftests/net/Makefile         |  1 +
 tools/testing/selftests/net/lib.sh           | 23 +++++++++++
 tools/testing/selftests/net/netdev-l2addr.sh | 59 ++++++++++++++++++++++++++++
 7 files changed, 123 insertions(+), 18 deletions(-)
---
base-commit: e96ee511c906c59b7c4e6efd9d9b33917730e000
change-id: 20250128-netdevsim-perm_addr-5fca47a08157