mlxsw: spectrum_acl: Allocate default actions for internal TCAM regions

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In Spectrum-2 and later ASICs, each TCAM region has a default action
that is executed in case a packet did not match any rule in the region.
The location of the action in the database (KVDL) is computed by adding
the region's index to a base value.

Some TCAM regions are not exposed to the host and used internally by the
device. Allocate KVDL entries for the default actions of these regions
to avoid the host from overwriting them.

With mlxsw, lookups in the internal regions are not currently performed,
but it is a good practice not to overwrite their default actions.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Ido Schimmel 2022-01-27 11:02:26 +02:00 • committed by Jakub Kicinski

parent bcdfd615f8

commit ef14c298b5

2 changed files with 13 additions and 1 deletions

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2

drivers/net/ethernet/mellanox/mlxsw/resources.h

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12

drivers/net/ethernet/mellanox/mlxsw/spectrum2_acl_tcam.c

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