diff options
| author | Danielle Ratson <danieller@nvidia.com> | 2022-07-27 09:23:21 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-07-29 11:02:23 +0100 |
| commit | 42823208b946d85d20a7065a1b2ef6e35a7be3a9 (patch) | |
| tree | a0ddb469540b07b95840f291c8775b074948f18a /drivers/net/ethernet/mellanox/mlxsw/core.h | |
| parent | 37b62b282b182acd2113f97c1b9fd651d4211027 (diff) | |
mlxsw: Support CQEv2 for SDQ in Spectrum-2 and newer ASICs
Currently, Tx completions are reported using Completion Queue Element
version 1 (CQEv1). These elements do not contain the Tx time stamp,
which is fine as Spectrum-1 reads Tx time stamps via a dedicated FIFO
and Spectrum-2 does not currently support PTP.
In preparation for Spectrum-2 PTP support, use CQEv2 for Spectrum-2 and
newer ASICs, as this CQE format encodes the Tx time stamp.
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
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: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/core.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h index 7213e4528298..6c332bb9b6eb 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.h +++ b/drivers/net/ethernet/mellanox/mlxsw/core.h @@ -427,6 +427,7 @@ struct mlxsw_driver { u8 txhdr_len; const struct mlxsw_config_profile *profile; + bool sdq_supports_cqe_v2; }; int mlxsw_core_kvd_sizes_get(struct mlxsw_core *mlxsw_core, @@ -437,6 +438,8 @@ int mlxsw_core_kvd_sizes_get(struct mlxsw_core *mlxsw_core, u32 mlxsw_core_read_frc_h(struct mlxsw_core *mlxsw_core); u32 mlxsw_core_read_frc_l(struct mlxsw_core *mlxsw_core); +bool mlxsw_core_sdq_supports_cqe_v2(struct mlxsw_core *mlxsw_core); + void mlxsw_core_emad_string_tlv_enable(struct mlxsw_core *mlxsw_core); bool mlxsw_core_res_valid(struct mlxsw_core *mlxsw_core, |