mlxsw: spectrum_qdisc: Allocate child qdiscs dynamically

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Instead of keeping qdiscs in globally-preallocated arrays, introduce a
per-qdisc-kind value num_classes, and then allocate the necessary child
qdiscs (if any) based on that value. Since now dynamic allocation is
involved, mlxsw_sp_qdisc_replace() gets messy enough that it is worth it to
split it to two cases: a new qdisc allocation and a change of existing
qdisc. (Note that the change also includes what TC formally calls replace,
if the qdisc kind is the same.)

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Petr Machata 2021-04-20 16:53:46 +02:00 • committed by David S. Miller

parent cff99e2045

commit 5cbd960253

1 changed files with 83 additions and 32 deletions

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115

drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c

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