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mlxsw: Add operations structure for bloom filter calculation

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Spectrum-4 will calculate hash function for bloom filter differently from
the existing ASICs.

There are two changes:
1. Instead of using one hash function to calculate 16 bits output (CRC-16),
   two functions will be used.
2. The chunks will be built differently, without padding.

As preparation for support of Spectrum-4 bloom filter, add 'ops'
structure to allow handling different calculation for different ASICs.

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>
This commit is contained in:
Amit Cohen 2022-01-06 18:06:50 +02:00 committed by Jakub Kicinski
parent 29409f363e
commit 58723d2f77
4 changed files with 18 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

@ -3155,6 +3155,7 @@ static int mlxsw_sp2_init(struct mlxsw_core *mlxsw_core,
mlxsw_sp->mr_tcam_ops = &mlxsw_sp2_mr_tcam_ops;
mlxsw_sp->acl_rulei_ops = &mlxsw_sp2_acl_rulei_ops;
mlxsw_sp->acl_tcam_ops = &mlxsw_sp2_acl_tcam_ops;
mlxsw_sp->acl_bf_ops = &mlxsw_sp2_acl_bf_ops;
mlxsw_sp->nve_ops_arr = mlxsw_sp2_nve_ops_arr;
mlxsw_sp->mac_mask = mlxsw_sp2_mac_mask;
mlxsw_sp->sb_vals = &mlxsw_sp2_sb_vals;
@ -3184,6 +3185,7 @@ static int mlxsw_sp3_init(struct mlxsw_core *mlxsw_core,
mlxsw_sp->mr_tcam_ops = &mlxsw_sp2_mr_tcam_ops;
mlxsw_sp->acl_rulei_ops = &mlxsw_sp2_acl_rulei_ops;
mlxsw_sp->acl_tcam_ops = &mlxsw_sp2_acl_tcam_ops;
mlxsw_sp->acl_bf_ops = &mlxsw_sp2_acl_bf_ops;
mlxsw_sp->nve_ops_arr = mlxsw_sp2_nve_ops_arr;
mlxsw_sp->mac_mask = mlxsw_sp2_mac_mask;
mlxsw_sp->sb_vals = &mlxsw_sp2_sb_vals;

4
drivers/net/ethernet/mellanox/mlxsw/spectrum.h
View File

@ -190,6 +190,7 @@ struct mlxsw_sp {
const struct mlxsw_sp_mr_tcam_ops *mr_tcam_ops;
const struct mlxsw_sp_acl_rulei_ops *acl_rulei_ops;
const struct mlxsw_sp_acl_tcam_ops *acl_tcam_ops;
const struct mlxsw_sp_acl_bf_ops *acl_bf_ops;
const struct mlxsw_sp_nve_ops **nve_ops_arr;
const struct mlxsw_sp_sb_vals *sb_vals;
const struct mlxsw_sp_sb_ops *sb_ops;
@ -1108,6 +1109,9 @@ extern const struct mlxsw_afk_ops mlxsw_sp1_afk_ops;
extern const struct mlxsw_afk_ops mlxsw_sp2_afk_ops;
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;
/* spectrum_matchall.c */
struct mlxsw_sp_mall_ops {
int (*sample_add)(struct mlxsw_sp *mlxsw_sp,

8
drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_bloom_filter.c
View File

@ -190,7 +190,7 @@ mlxsw_sp_acl_bf_entry_add(struct mlxsw_sp *mlxsw_sp,
mutex_lock(&bf->lock);
bf_index = mlxsw_sp2_acl_bf_index_get(bf, aregion, aentry);
bf_index = mlxsw_sp->acl_bf_ops->index_get(bf, aregion, aentry);
rule_index = mlxsw_sp_acl_bf_rule_count_index_get(bf, erp_bank,
bf_index);
@ -233,7 +233,7 @@ mlxsw_sp_acl_bf_entry_del(struct mlxsw_sp *mlxsw_sp,
mutex_lock(&bf->lock);
bf_index = mlxsw_sp2_acl_bf_index_get(bf, aregion, aentry);
bf_index = mlxsw_sp->acl_bf_ops->index_get(bf, aregion, aentry);
rule_index = mlxsw_sp_acl_bf_rule_count_index_get(bf, erp_bank,
bf_index);
@ -281,3 +281,7 @@ void mlxsw_sp_acl_bf_fini(struct mlxsw_sp_acl_bf *bf)
mutex_destroy(&bf->lock);
kfree(bf);
}
const struct mlxsw_sp_acl_bf_ops mlxsw_sp2_acl_bf_ops = {
.index_get = mlxsw_sp2_acl_bf_index_get,
};

6
drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h
View File

@ -287,6 +287,12 @@ void mlxsw_sp_acl_erps_fini(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_bf;
struct mlxsw_sp_acl_bf_ops {
unsigned int (*index_get)(struct mlxsw_sp_acl_bf *bf,
struct mlxsw_sp_acl_atcam_region *aregion,
struct mlxsw_sp_acl_atcam_entry *aentry);
};
int
mlxsw_sp_acl_bf_entry_add(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_bf *bf,