diff options
| author | Amit Cohen <amcohen@nvidia.com> | 2022-01-06 19:06:51 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-01-07 07:00:45 +0300 |
| commit | 852ee4191dd2046203c2fece6a9402ce28118f80 (patch) | |
| tree | eeba7236b9f92906e15fd3a7e509f7f433aae582 /drivers/net/ethernet/mellanox/mlxsw/spectrum.h | |
| parent | 58723d2f77717373d44721a2c65f8af5917102b7 (diff) | |
| download | linux-852ee4191dd2046203c2fece6a9402ce28118f80.tar.xz | |
mlxsw: spectrum_acl_bloom_filter: Add support for Spectrum-4 calculation
Spectrum-4 will calculate hash function for bloom filter differently
from the existing ASICs.
First, two hash functions will be used to calculate 16 bits result.
The final result will be combination of the two results - 6 bits which
are result of CRC-6 will be used as MSB and 10 bits which are result of
CRC-10 will be used as LSB.
Second, while in Spectrum{2,3}, there is a padding in each chunk, so the
chunks use a sequence of whole bytes, in Spectrum-4 there is no padding,
so each chunk use 20 bytes minus 2 bits, so it is necessary to align the
chunks to be without holes.
Add dedicated 'mlxsw_sp_acl_bf_ops' for Spectrum-4 and add the required
tables for CRC calculations.
All the details are documented as part of the code for future use.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index e7da6c83c442..bb2442e1f705 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -1111,6 +1111,7 @@ extern const struct mlxsw_afk_ops mlxsw_sp4_afk_ops; /* spectrum_acl_bloom_filter.c */ extern const struct mlxsw_sp_acl_bf_ops mlxsw_sp2_acl_bf_ops; +extern const struct mlxsw_sp_acl_bf_ops mlxsw_sp4_acl_bf_ops; /* spectrum_matchall.c */ struct mlxsw_sp_mall_ops { |