diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h | 147 |
1 files changed, 147 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 0000000000..7b700d0f95 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h @@ -0,0 +1,147 @@ +/* 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_stats.h" +#include "en/txrx.h" +#include <linux/ktime.h> +#include <linux/ptp_classify.h> +#include <linux/time64.h> +#include <linux/workqueue.h> + +#define MLX5E_PTP_CHANNEL_IX 0 +#define MLX5E_PTP_MAX_LOG_SQ_SIZE (8U) +#define MLX5E_PTP_TS_CQE_UNDELIVERED_TIMEOUT (1 * NSEC_PER_SEC) + +struct mlx5e_ptp_metadata_fifo { + u8 cc; + u8 pc; + u8 mask; + u8 *data; +}; + +struct mlx5e_ptp_metadata_map { + u16 undelivered_counter; + u16 capacity; + struct sk_buff **data; +}; + +struct mlx5e_ptpsq { + struct mlx5e_txqsq txqsq; + struct mlx5e_cq ts_cq; + struct mlx5e_ptp_cq_stats *cq_stats; + u16 ts_cqe_ctr_mask; + + struct work_struct report_unhealthy_work; + struct mlx5e_ptp_port_ts_cqe_list *ts_cqe_pending_list; + struct mlx5e_ptp_metadata_fifo metadata_freelist; + struct mlx5e_ptp_metadata_map metadata_map; +}; + +enum { + MLX5E_PTP_STATE_TX, + MLX5E_PTP_STATE_RX, + MLX5E_PTP_STATE_NUM_STATES, +}; + +struct mlx5e_ptp { + /* data path */ + struct mlx5e_ptpsq ptpsq[MLX5E_MAX_NUM_TC]; + struct mlx5e_rq rq; + 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 mlx5e_ch_stats *stats; + + /* control */ + struct mlx5e_priv *priv; + struct mlx5_core_dev *mdev; + struct hwtstamp_config *tstamp; + DECLARE_BITMAP(state, MLX5E_PTP_STATE_NUM_STATES); +}; + +static inline bool mlx5e_use_ptpsq(struct sk_buff *skb) +{ + struct flow_keys fk; + + if (!(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) + return false; + + if (!skb_flow_dissect_flow_keys(skb, &fk, 0)) + return false; + + if (fk.basic.n_proto == htons(ETH_P_1588)) + return true; + + if (fk.basic.n_proto != htons(ETH_P_IP) && + fk.basic.n_proto != htons(ETH_P_IPV6)) + return false; + + return (fk.basic.ip_proto == IPPROTO_UDP && + fk.ports.dst == htons(PTP_EV_PORT)); +} + +static inline void mlx5e_ptp_metadata_fifo_push(struct mlx5e_ptp_metadata_fifo *fifo, u8 metadata) +{ + fifo->data[fifo->mask & fifo->pc++] = metadata; +} + +static inline u8 +mlx5e_ptp_metadata_fifo_pop(struct mlx5e_ptp_metadata_fifo *fifo) +{ + return fifo->data[fifo->mask & fifo->cc++]; +} + +static inline void +mlx5e_ptp_metadata_map_put(struct mlx5e_ptp_metadata_map *map, + struct sk_buff *skb, u8 metadata) +{ + WARN_ON_ONCE(map->data[metadata]); + map->data[metadata] = skb; +} + +static inline bool mlx5e_ptpsq_metadata_freelist_empty(struct mlx5e_ptpsq *ptpsq) +{ + struct mlx5e_ptp_metadata_fifo *freelist; + + if (likely(!ptpsq)) + return false; + + freelist = &ptpsq->metadata_freelist; + + return freelist->pc == freelist->cc; +} + +int mlx5e_ptp_open(struct mlx5e_priv *priv, struct mlx5e_params *params, + u8 lag_port, struct mlx5e_ptp **cp); +void mlx5e_ptp_close(struct mlx5e_ptp *c); +void mlx5e_ptp_activate_channel(struct mlx5e_ptp *c); +void mlx5e_ptp_deactivate_channel(struct mlx5e_ptp *c); +int mlx5e_ptp_get_rqn(struct mlx5e_ptp *c, u32 *rqn); +int mlx5e_ptp_alloc_rx_fs(struct mlx5e_flow_steering *fs, + const struct mlx5e_profile *profile); +void mlx5e_ptp_free_rx_fs(struct mlx5e_flow_steering *fs, + const struct mlx5e_profile *profile); +int mlx5e_ptp_rx_manage_fs(struct mlx5e_priv *priv, bool set); + +void mlx5e_ptpsq_track_metadata(struct mlx5e_ptpsq *ptpsq, u8 metadata); + +enum { + MLX5E_SKB_CB_CQE_HWTSTAMP = BIT(0), + MLX5E_SKB_CB_PORT_HWTSTAMP = BIT(1), +}; + +void mlx5e_skb_cb_hwtstamp_handler(struct sk_buff *skb, int hwtstamp_type, + ktime_t hwtstamp, + struct mlx5e_ptp_cq_stats *cq_stats); + +void mlx5e_skb_cb_hwtstamp_init(struct sk_buff *skb); +#endif /* __MLX5_EN_PTP_H__ */ |