octeontx2-pf: reset HTB scheduler topology before freeing queues

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HTB offload programs NIX_AF_TLxX_TOPOLOGY on QoS-allocated scheduler
queues via otx2_qos_txschq_set_parent_topology(), but teardown freed
those queues without clearing TOPOLOGY.  The AF only restores PARENT and
SCHEDULE on free, so PRIO_ANCHOR/RR_PRIO settings can survive in the
shared scheduler pool and affect later allocations.

Add otx2_qos_reset_schq_topology() and otx2_qos_free_hw_schq() to zero
TL4 through TL2 TOPOLOGY before each schq is returned to the AF during
hierarchy teardown and cfg rollback.  Skip the aggregation level (TL1):
it is a per-tx-link queue shared by the PF, default Tx hierarchy and VFs,
and is not freed back to the AF by nix_txschq_free_one().

Fixes: 5e6808b4c6 ("octeontx2-pf: Add support for HTB offload")
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260903020533.3068041-1-rkannoth@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Ratheesh Kannoth 2026-09-03 07:35:33 +05:30 • committed by Jakub Kicinski

parent 66ef5adb75

commit ef39fca850

1 changed files with 55 additions and 5 deletions

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drivers/net/ethernet/marvell/octeontx2/nic/qos.c

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