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 #define MLX5E_PTP_CHANNEL_IX 0 12 13 struct mlx5e_ptpsq { 14 struct mlx5e_txqsq txqsq; 15 struct mlx5e_cq ts_cq; 16 u16 skb_fifo_cc; 17 u16 skb_fifo_pc; 18 struct mlx5e_skb_fifo skb_fifo; 19 struct mlx5e_ptp_cq_stats *cq_stats; 20 }; 21 22 enum { 23 MLX5E_PTP_STATE_TX, 24 MLX5E_PTP_STATE_RX, 25 MLX5E_PTP_STATE_NUM_STATES, 26 }; 27 28 struct mlx5e_ptp { 29 /* data path */ 30 struct mlx5e_ptpsq ptpsq[MLX5E_MAX_NUM_TC]; 31 struct mlx5e_rq rq; 32 struct napi_struct napi; 33 struct device *pdev; 34 struct net_device *netdev; 35 __be32 mkey_be; 36 u8 num_tc; 37 u8 lag_port; 38 39 /* data path - accessed per napi poll */ 40 struct mlx5e_ch_stats *stats; 41 42 /* control */ 43 struct mlx5e_priv *priv; 44 struct mlx5_core_dev *mdev; 45 struct hwtstamp_config *tstamp; 46 DECLARE_BITMAP(state, MLX5E_PTP_STATE_NUM_STATES); 47 }; 48 49 static inline bool mlx5e_use_ptpsq(struct sk_buff *skb) 50 { 51 struct flow_keys fk; 52 53 if (!(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) 54 return false; 55 56 if (!skb_flow_dissect_flow_keys(skb, &fk, 0)) 57 return false; 58 59 if (fk.basic.n_proto == htons(ETH_P_1588)) 60 return true; 61 62 if (fk.basic.n_proto != htons(ETH_P_IP) && 63 fk.basic.n_proto != htons(ETH_P_IPV6)) 64 return false; 65 66 return (fk.basic.ip_proto == IPPROTO_UDP && 67 fk.ports.dst == htons(PTP_EV_PORT)); 68 } 69 70 int mlx5e_ptp_open(struct mlx5e_priv *priv, struct mlx5e_params *params, 71 u8 lag_port, struct mlx5e_ptp **cp); 72 void mlx5e_ptp_close(struct mlx5e_ptp *c); 73 void mlx5e_ptp_activate_channel(struct mlx5e_ptp *c); 74 void mlx5e_ptp_deactivate_channel(struct mlx5e_ptp *c); 75 int mlx5e_ptp_get_rqn(struct mlx5e_ptp *c, u32 *rqn); 76 int mlx5e_ptp_alloc_rx_fs(struct mlx5e_priv *priv); 77 void mlx5e_ptp_free_rx_fs(struct mlx5e_priv *priv); 78 int mlx5e_ptp_rx_manage_fs(struct mlx5e_priv *priv, bool set); 79 80 enum { 81 MLX5E_SKB_CB_CQE_HWTSTAMP = BIT(0), 82 MLX5E_SKB_CB_PORT_HWTSTAMP = BIT(1), 83 }; 84 85 void mlx5e_skb_cb_hwtstamp_handler(struct sk_buff *skb, int hwtstamp_type, 86 ktime_t hwtstamp, 87 struct mlx5e_ptp_cq_stats *cq_stats); 88 89 void mlx5e_skb_cb_hwtstamp_init(struct sk_buff *skb); 90 #endif /* __MLX5_EN_PTP_H__ */ 91