[PATCHv4 net-next 0/3] bonding: support aggregator selection based on port priority

[Hangbin Liu <liuhangbin@gmail.com>]

This patchset introduces a new per-port bonding option: `ad_actor_port_prio`.

It allows users to configure the actor's port priority, which can then be used
by the bonding driver for aggregator selection based on port priority.

This provides finer control over LACP aggregator choice, especially in setups
with multiple eligible aggregators over 2 switches.

v4:
a) fix actor_port_prio minimal value (Jay Vosburgh)
b) fix ad_agg_selection_test comment order (Paolo Abeni)
c) restruct selftest, reduce duplication (Paolo Abeni)

v3:
a) add comments when init slave port_priority (Jonas Gorski)
b) rename ad_lacp_port_prio to lacp_port_prio (Jay Vosburgh)

v2:
a) set default bond option value for port priority (Nikolay Aleksandrov)
b) fix __agg_ports_priority coding style (Nikolay Aleksandrov)
c) fix shellcheck warns

Hangbin Liu (3):
  bonding: add support for per-port LACP actor priority
  bonding: support aggregator selection based on port priority
  selftests: bonding: add test for LACP actor port priority

 Documentation/networking/bonding.rst          |  18 ++-
 drivers/net/bonding/bond_3ad.c                |  31 +++++
 drivers/net/bonding/bond_netlink.c            |  16 +++
 drivers/net/bonding/bond_options.c            |  37 ++++++
 include/net/bond_3ad.h                        |   2 +
 include/net/bond_options.h                    |   1 +
 include/uapi/linux/if_link.h                  |   1 +
 .../selftests/drivers/net/bonding/Makefile    |   3 +-
 .../drivers/net/bonding/bond_lacp_prio.sh     | 107 ++++++++++++++++++
 tools/testing/selftests/net/forwarding/lib.sh |  24 ----
 tools/testing/selftests/net/lib.sh            |  24 ++++
 11 files changed, 238 insertions(+), 26 deletions(-)
 create mode 100755 tools/testing/selftests/drivers/net/bonding/bond_lacp_prio.sh

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2.50.1