mlxsw: spectrum: Add a copy of 'struct mlxsw_config_profile' for Spectrum-4

Starting from Spectrum-4, the maximum number of LAG IDs can be configured
by software via CONFIG_PROFILE command during driver initialization.

Add a dedicated instance of 'struct mlxsw_config_profile' for Spectrum-4
and set the 'max_lag' field to 128, which is the same amount of LAG entries
as in Spectrum-{2,3}. Without this configuration, firmware reserves 256
(the value of 'cap_max_lag' resource) entries at beginning of PGT table for
LAG identifiers, which means that less entries in PGT will be available.

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

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index c71a040..5bcf5bc 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3512,6 +3512,33 @@ static const struct mlxsw_config_profile mlxsw_sp2_config_profile = {
        .cqe_time_stamp_type            = MLXSW_CMD_MBOX_CONFIG_PROFILE_CQE_TIME_STAMP_TYPE_UTC,
 };
 
+/* Reduce number of LAGs from full capacity (256) to the maximum supported LAGs
+ * in Spectrum-2/3, to avoid regression in number of free entries in the PGT
+ * table.
+ */
+#define MLXSW_SP4_CONFIG_PROFILE_MAX_LAG 128
+
+static const struct mlxsw_config_profile mlxsw_sp4_config_profile = {
+       .used_max_lag                   = 1,
+       .max_lag                        = MLXSW_SP4_CONFIG_PROFILE_MAX_LAG,
+       .used_flood_mode                = 1,
+       .flood_mode                     = MLXSW_CMD_MBOX_CONFIG_PROFILE_FLOOD_MODE_CONTROLLED,
+       .used_max_ib_mc                 = 1,
+       .max_ib_mc                      = 0,
+       .used_max_pkey                  = 1,
+       .max_pkey                       = 0,
+       .used_ubridge                   = 1,
+       .ubridge                        = 1,
+       .swid_config                    = {
+               {
+                       .used_type      = 1,
+                       .type           = MLXSW_PORT_SWID_TYPE_ETH,
+               }
+       },
+       .used_cqe_time_stamp_type       = 1,
+       .cqe_time_stamp_type            = MLXSW_CMD_MBOX_CONFIG_PROFILE_CQE_TIME_STAMP_TYPE_UTC,
+};
+
 static void
 mlxsw_sp_resource_size_params_prepare(struct mlxsw_core *mlxsw_core,
                                      struct devlink_resource_size_params *kvd_size_params,
@@ -4042,7 +4069,7 @@ static struct mlxsw_driver mlxsw_sp4_driver = {
        .params_unregister              = mlxsw_sp2_params_unregister,
        .ptp_transmitted                = mlxsw_sp_ptp_transmitted,
        .txhdr_len                      = MLXSW_TXHDR_LEN,
-       .profile                        = &mlxsw_sp2_config_profile,
+       .profile                        = &mlxsw_sp4_config_profile,
        .sdq_supports_cqe_v2            = true,
 };