diff options
| author | Nir Dotan <nird@mellanox.com> | 2018-12-16 08:49:28 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-12-16 15:20:34 -0800 |
| commit | 7585cacdb978a0cd8d47bff9e5dcecdc9d903add (patch) | |
| tree | fce0fbd6dc8609e4d77505b2c58cd7978590f45e /drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h | |
| parent | 0487cfba866a7f985c51ce7553d37439e10e71c1 (diff) | |
mlxsw: spectrum_acl: Add Bloom filter handling
Spectrum-2 HW uses Bloom filter in order to skip lookups on specific
eRPs. It uses crc-16-Msbit-first calculation over a specific layout
of a rule's key fields combined with eRP ID as well as region ID.
Per potential lookup, iff the Bloom filter entry of the calculated
index is empty, then the lookup can be skipped. Hence, the mlxsw
driver should update the Bloom filter entry per each rule insertion
or deletion when rules are part of an eRP.
Add functions for adding and deleting entries in the Bloom filter.
In order to do so also add crc-16 computation based on the specific
Spectrum-2 polynomial and a function for encoding the crc-16 input
in the manner dictated by HW implementation.
Signed-off-by: Nir Dotan <nird@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h index c65c902cb56a..30ac4d0132de 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h @@ -260,6 +260,18 @@ void mlxsw_sp_acl_erps_fini(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_bf; +int +mlxsw_sp_acl_bf_entry_add(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_acl_bf *bf, + struct mlxsw_sp_acl_atcam_region *aregion, + unsigned int erp_bank, + struct mlxsw_sp_acl_atcam_entry *aentry); +void +mlxsw_sp_acl_bf_entry_del(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_acl_bf *bf, + struct mlxsw_sp_acl_atcam_region *aregion, + unsigned int erp_bank, + struct mlxsw_sp_acl_atcam_entry *aentry); struct mlxsw_sp_acl_bf * mlxsw_sp_acl_bf_init(struct mlxsw_sp *mlxsw_sp, unsigned int num_erp_banks); void mlxsw_sp_acl_bf_fini(struct mlxsw_sp_acl_bf *bf); |