[PATCH net 0/2] bond: fix 2 link state issues

[Hangbin Liu]

This patch set fixes two bonding link state issues:

1. Broadcast mode incorrectly sets usable_slaves, causing updelay to be ignored
2. BOND_LINK_FAIL and BOND_LINK_BACK are treated as invalid states, generating
   confusing error messages

Here is the reproducer:

```
ip netns add ns
ip -n ns link add bond0 type bond mode 3 miimon 100 updelay 200 downdelay 200
ip -n ns link add type veth
ip -n ns link add type veth
ip -n ns link set veth1 up
ip -n ns link set veth3 up
ip -n ns link set veth0 master bond0
ip -n ns link set veth2 master bond0
ip -n ns link set bond0 up
sleep 1
ip -n ns link set veth3 down
sleep 1
ip -n ns link set veth3 up
sleep 1
dmesg | tail
```

---
Hangbin Liu (2):
      bonding: do not set usable_slaves for broadcast mode
      bonding: handle BOND_LINK_FAIL, BOND_LINK_BACK as valid link states

 drivers/net/bonding/bond_main.c | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)
---
base-commit: 46d0d6f50dab706637f4c18a470aac20a21900d3
change-id: 20260304-b4-bond_updelay-266e8ce1048e

Best regards,
-- 
Hangbin Liu <liuhangbin@xxxxxxxxx>