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c4a5c46199
devlink reload while PSP connections are active does:
mlx5_unload_one_devl_locked() -> mlx5_detach_device()
-> _mlx5e_suspend()
-> mlx5e_detach_netdev()
-> profile->cleanup_rx
-> profile->cleanup_tx
-> mlx5e_destroy_mdev_resources() -> mlx5_core_dealloc_pd() fails:
...
mlx5_core 0000:08:00.0: mlx5_cmd_out_err:821:(pid 19722):
DEALLOC_PD(0x801) op_mod(0x0) failed, status bad resource state(0x9),
syndrome (0xef0c8a), err(-22)
...
The reason for failure is the existence of TX keys, which are removed by
the PSP dev unregistration happening in:
profile->cleanup() -> mlx5e_psp_unregister() -> mlx5e_psp_cleanup()
-> psp_dev_unregister()
...but this isn't invoked in the devlink reload flow, only when changing
the NIC profile (e.g. when transitioning to switchdev mode) or on dev
teardown.
Move PSP device registration into mlx5e_nic_enable(), and unregistration
into the corresponding mlx5e_nic_disable(). These functions are called
during netdev attach/detach after RX & TX are set up.
This ensures that the keys will be gone by the time the PD is destroyed.
Fixes:
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Linux kernel ============ The Linux kernel is the core of any Linux operating system. It manages hardware, system resources, and provides the fundamental services for all other software. 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