From eb907e9779ca48e3f3fe3796ed88de017dd59414 Mon Sep 17 00:00:00 2001 From: Amit Cohen Date: Fri, 26 Aug 2022 18:06:50 +0200 Subject: [PATCH] mlxsw: Support configuring 'max_lag' via CONFIG_PROFILE In the device, LAG identifiers are stored in the port group table (PGT). During initialization, firmware reserves a certain amount of entries at the beginning of this table for LAG identifiers. In Spectrum-4, the size of the PGT table did not increase, but the maximum number of LAG identifiers was doubled, leaving less room for others entries (e.g., flood entries) that also reside in the PGT. Therefore, in order to avoid a regression and as long as there is no explicit requirement to support 256 LAGs, mlxsw driver will configure the firmware to allocate the same amount of LAG entries (128) as in Spectrum-{2,3}. This configuration is done using 'max_lag' field in CONFIG_PROFILE command. Extend 'struct mlxsw_config_profile' to support 'max_lag' field and configure firmware accordingly. A next patch will adjust Spectrum-4 to configure 'max_lag' field. Signed-off-by: Amit Cohen Reviewed-by: Petr Machata Reviewed-by: Ido Schimmel Signed-off-by: Petr Machata Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mellanox/mlxsw/core.h | 2 ++ drivers/net/ethernet/mellanox/mlxsw/pci.c | 5 +++++ 2 files changed, 7 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h index 9de9fa2..383c423 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.h +++ b/drivers/net/ethernet/mellanox/mlxsw/core.h @@ -295,6 +295,7 @@ struct mlxsw_swid_config { struct mlxsw_config_profile { u16 used_max_vepa_channels:1, + used_max_lag:1, used_max_mid:1, used_max_pgt:1, used_max_system_port:1, @@ -310,6 +311,7 @@ struct mlxsw_config_profile { used_kvd_sizes:1, used_cqe_time_stamp_type:1; u8 max_vepa_channels; + u16 max_lag; u16 max_mid; u16 max_pgt; u16 max_system_port; diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c index 50527ad..c968309 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/pci.c +++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c @@ -1187,6 +1187,11 @@ static int mlxsw_pci_config_profile(struct mlxsw_pci *mlxsw_pci, char *mbox, mlxsw_cmd_mbox_config_profile_max_vepa_channels_set( mbox, profile->max_vepa_channels); } + if (profile->used_max_lag) { + mlxsw_cmd_mbox_config_profile_set_max_lag_set(mbox, 1); + mlxsw_cmd_mbox_config_profile_max_lag_set(mbox, + profile->max_lag); + } if (profile->used_max_mid) { mlxsw_cmd_mbox_config_profile_set_max_mid_set( mbox, 1); -- 2.7.4