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| 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/spectrum.c | |
| parent | 37b62b282b182acd2113f97c1b9fd651d4211027 (diff) | |
| download | lwn-42823208b946d85d20a7065a1b2ef6e35a7be3a9.tar.gz lwn-42823208b946d85d20a7065a1b2ef6e35a7be3a9.zip | |
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/spectrum.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 641078060b02..896510c2d8d7 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -3831,6 +3831,7 @@ static struct mlxsw_driver mlxsw_sp1_driver = { .ptp_transmitted = mlxsw_sp_ptp_transmitted, .txhdr_len = MLXSW_TXHDR_LEN, .profile = &mlxsw_sp1_config_profile, + .sdq_supports_cqe_v2 = false, }; static struct mlxsw_driver mlxsw_sp2_driver = { @@ -3869,6 +3870,7 @@ static struct mlxsw_driver mlxsw_sp2_driver = { .ptp_transmitted = mlxsw_sp_ptp_transmitted, .txhdr_len = MLXSW_TXHDR_LEN, .profile = &mlxsw_sp2_config_profile, + .sdq_supports_cqe_v2 = true, }; static struct mlxsw_driver mlxsw_sp3_driver = { @@ -3907,6 +3909,7 @@ static struct mlxsw_driver mlxsw_sp3_driver = { .ptp_transmitted = mlxsw_sp_ptp_transmitted, .txhdr_len = MLXSW_TXHDR_LEN, .profile = &mlxsw_sp2_config_profile, + .sdq_supports_cqe_v2 = true, }; static struct mlxsw_driver mlxsw_sp4_driver = { @@ -3943,6 +3946,7 @@ static struct mlxsw_driver mlxsw_sp4_driver = { .ptp_transmitted = mlxsw_sp_ptp_transmitted, .txhdr_len = MLXSW_TXHDR_LEN, .profile = &mlxsw_sp2_config_profile, + .sdq_supports_cqe_v2 = true, }; bool mlxsw_sp_port_dev_check(const struct net_device *dev) |