1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ 2 /* Copyright (c) 2020 Mellanox Technologies. */ 3 4 #ifndef __MLX5_EN_PTP_H__ 5 #define __MLX5_EN_PTP_H__ 6 7 #include "en.h" 8 #include "en_stats.h" 9 #include <linux/ptp_classify.h> 10 11 struct mlx5e_ptpsq { 12 struct mlx5e_txqsq txqsq; 13 struct mlx5e_cq ts_cq; 14 u16 skb_fifo_cc; 15 u16 skb_fifo_pc; 16 struct mlx5e_skb_fifo skb_fifo; 17 struct mlx5e_ptp_cq_stats *cq_stats; 18 }; 19 20 enum { 21 MLX5E_PTP_STATE_TX, 22 MLX5E_PTP_STATE_RX, 23 MLX5E_PTP_STATE_NUM_STATES, 24 }; 25 26 struct mlx5e_ptp { 27 /* data path */ 28 struct mlx5e_ptpsq ptpsq[MLX5E_MAX_NUM_TC]; 29 struct mlx5e_rq rq; 30 struct napi_struct napi; 31 struct device *pdev; 32 struct net_device *netdev; 33 __be32 mkey_be; 34 u8 num_tc; 35 u8 lag_port; 36 37 /* data path - accessed per napi poll */ 38 struct mlx5e_ch_stats *stats; 39 40 /* control */ 41 struct mlx5e_priv *priv; 42 struct mlx5_core_dev *mdev; 43 struct hwtstamp_config *tstamp; 44 DECLARE_BITMAP(state, MLX5E_PTP_STATE_NUM_STATES); 45 }; 46 47 static inline bool mlx5e_use_ptpsq(struct sk_buff *skb) 48 { 49 struct flow_keys fk; 50 51 if (!(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) 52 return false; 53 54 if (!skb_flow_dissect_flow_keys(skb, &fk, 0)) 55 return false; 56 57 if (fk.basic.n_proto == htons(ETH_P_1588)) 58 return true; 59 60 if (fk.basic.n_proto != htons(ETH_P_IP) && 61 fk.basic.n_proto != htons(ETH_P_IPV6)) 62 return false; 63 64 return (fk.basic.ip_proto == IPPROTO_UDP && 65 fk.ports.dst == htons(PTP_EV_PORT)); 66 } 67 68 int mlx5e_ptp_open(struct mlx5e_priv *priv, struct mlx5e_params *params, 69 u8 lag_port, struct mlx5e_ptp **cp); 70 void mlx5e_ptp_close(struct mlx5e_ptp *c); 71 void mlx5e_ptp_activate_channel(struct mlx5e_ptp *c); 72 void mlx5e_ptp_deactivate_channel(struct mlx5e_ptp *c); 73 int mlx5e_ptp_get_rqn(struct mlx5e_ptp *c, u32 *rqn); 74 int mlx5e_ptp_alloc_rx_fs(struct mlx5e_priv *priv); 75 void mlx5e_ptp_free_rx_fs(struct mlx5e_priv *priv); 76 int mlx5e_ptp_rx_manage_fs(struct mlx5e_priv *priv, bool set); 77 78 enum { 79 MLX5E_SKB_CB_CQE_HWTSTAMP = BIT(0), 80 MLX5E_SKB_CB_PORT_HWTSTAMP = BIT(1), 81 }; 82 83 void mlx5e_skb_cb_hwtstamp_handler(struct sk_buff *skb, int hwtstamp_type, 84 ktime_t hwtstamp, 85 struct mlx5e_ptp_cq_stats *cq_stats); 86 87 void mlx5e_skb_cb_hwtstamp_init(struct sk_buff *skb); 88 #endif /* __MLX5_EN_PTP_H__ */ 89