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| author | Eran Ben Elisha <eranbe@nvidia.com> | 2020-12-02 01:42:01 +0300 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@nvidia.com> | 2020-12-08 22:28:46 +0300 |
| commit | 145e5637d941daec2e8d1ff21676cbf1aa62cf4d (patch) | |
| tree | 2c4ca3308e3a87a18bab7d6c895ce81378ab94fe /drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h | |
| parent | cecaa6a7d576bb1929d7642a1d1da9a33deeea37 (diff) | |
| download | linux-145e5637d941daec2e8d1ff21676cbf1aa62cf4d.tar.xz | |
net/mlx5e: Add TX PTP port object support
Add TX PTP port object support for better TX timestamping accuracy.
Currently, driver supports CQE based TX port timestamp. Device
also offers TX port timestamp, which has less jitter and better
reflects the actual time of a packet's transmit.
Define new driver layout called ptpsq, on which driver will create
SQs that will support TX port timestamp for their transmitted packets.
Driver to identify PTP TX skbs and steer them to these dedicated SQs
as part of the select queue ndo.
Driver to hold ptpsq per TC and report them at
netif_set_real_num_tx_queues().
Add support for all needed functionality in order to xmit and poll
completions received via ptpsq.
Add ptpsq to the TX reporter recover, diagnose and dump methods.
Creation of ptpsqs is disabled by default, and can be enabled via
tx_port_ts private flag.
This patch steer all timestamp related packets to a ptpsq, but it
does not open the port timestamp support for it. The support will
be added in the following patch.
Signed-off-by: Eran Ben Elisha <eranbe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h b/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h new file mode 100644 index 000000000000..daa3b6953e3f --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ +/* Copyright (c) 2020 Mellanox Technologies. */ + +#ifndef __MLX5_EN_PTP_H__ +#define __MLX5_EN_PTP_H__ + +#include "en.h" +#include "en/params.h" +#include "en_stats.h" + +struct mlx5e_ptpsq { + struct mlx5e_txqsq txqsq; +}; + +struct mlx5e_port_ptp { + /* data path */ + struct mlx5e_ptpsq ptpsq[MLX5E_MAX_NUM_TC]; + struct napi_struct napi; + struct device *pdev; + struct net_device *netdev; + __be32 mkey_be; + u8 num_tc; + u8 lag_port; + + /* data path - accessed per napi poll */ + struct irq_desc *irq_desc; + struct mlx5e_ch_stats *stats; + + /* control */ + struct mlx5e_priv *priv; + struct mlx5_core_dev *mdev; + struct hwtstamp_config *tstamp; + DECLARE_BITMAP(state, MLX5E_CHANNEL_NUM_STATES); + int ix; +}; + +struct mlx5e_ptp_params { + struct mlx5e_params params; + struct mlx5e_sq_param txq_sq_param; +}; + +int mlx5e_port_ptp_open(struct mlx5e_priv *priv, struct mlx5e_params *params, + u8 lag_port, struct mlx5e_port_ptp **cp); +void mlx5e_port_ptp_close(struct mlx5e_port_ptp *c); +void mlx5e_ptp_activate_channel(struct mlx5e_port_ptp *c); +void mlx5e_ptp_deactivate_channel(struct mlx5e_port_ptp *c); + +#endif /* __MLX5_EN_PTP_H__ */ |