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 "en/txrx.h" 10 #include <linux/ptp_classify.h> 11 12 #define MLX5E_PTP_CHANNEL_IX 0 13 14 struct mlx5e_ptpsq { 15 struct mlx5e_txqsq txqsq; 16 struct mlx5e_cq ts_cq; 17 u16 skb_fifo_cc; 18 u16 skb_fifo_pc; 19 struct mlx5e_skb_fifo skb_fifo; 20 struct mlx5e_ptp_cq_stats *cq_stats; 21 u16 ts_cqe_ctr_mask; 22 }; 23 24 enum { 25 MLX5E_PTP_STATE_TX, 26 MLX5E_PTP_STATE_RX, 27 MLX5E_PTP_STATE_NUM_STATES, 28 }; 29 30 struct mlx5e_ptp { 31 /* data path */ 32 struct mlx5e_ptpsq ptpsq[MLX5E_MAX_NUM_TC]; 33 struct mlx5e_rq rq; 34 struct napi_struct napi; 35 struct device *pdev; 36 struct net_device *netdev; 37 __be32 mkey_be; 38 u8 num_tc; 39 u8 lag_port; 40 41 /* data path - accessed per napi poll */ 42 struct mlx5e_ch_stats *stats; 43 44 /* control */ 45 struct mlx5e_priv *priv; 46 struct mlx5_core_dev *mdev; 47 struct hwtstamp_config *tstamp; 48 DECLARE_BITMAP(state, MLX5E_PTP_STATE_NUM_STATES); 49 }; 50 51 static inline bool mlx5e_use_ptpsq(struct sk_buff *skb) 52 { 53 struct flow_keys fk; 54 55 if (!(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) 56 return false; 57 58 if (!skb_flow_dissect_flow_keys(skb, &fk, 0)) 59 return false; 60 61 if (fk.basic.n_proto == htons(ETH_P_1588)) 62 return true; 63 64 if (fk.basic.n_proto != htons(ETH_P_IP) && 65 fk.basic.n_proto != htons(ETH_P_IPV6)) 66 return false; 67 68 return (fk.basic.ip_proto == IPPROTO_UDP && 69 fk.ports.dst == htons(PTP_EV_PORT)); 70 } 71 72 static inline bool mlx5e_ptpsq_fifo_has_room(struct mlx5e_txqsq *sq) 73 { 74 if (!sq->ptpsq) 75 return true; 76 77 return mlx5e_skb_fifo_has_room(&sq->ptpsq->skb_fifo); 78 } 79 80 int mlx5e_ptp_open(struct mlx5e_priv *priv, struct mlx5e_params *params, 81 u8 lag_port, struct mlx5e_ptp **cp); 82 void mlx5e_ptp_close(struct mlx5e_ptp *c); 83 void mlx5e_ptp_activate_channel(struct mlx5e_ptp *c); 84 void mlx5e_ptp_deactivate_channel(struct mlx5e_ptp *c); 85 int mlx5e_ptp_get_rqn(struct mlx5e_ptp *c, u32 *rqn); 86 int mlx5e_ptp_alloc_rx_fs(struct mlx5e_flow_steering *fs, 87 const struct mlx5e_profile *profile); 88 void mlx5e_ptp_free_rx_fs(struct mlx5e_flow_steering *fs, 89 const struct mlx5e_profile *profile); 90 int mlx5e_ptp_rx_manage_fs(struct mlx5e_priv *priv, bool set); 91 92 enum { 93 MLX5E_SKB_CB_CQE_HWTSTAMP = BIT(0), 94 MLX5E_SKB_CB_PORT_HWTSTAMP = BIT(1), 95 }; 96 97 void mlx5e_skb_cb_hwtstamp_handler(struct sk_buff *skb, int hwtstamp_type, 98 ktime_t hwtstamp, 99 struct mlx5e_ptp_cq_stats *cq_stats); 100 101 void mlx5e_skb_cb_hwtstamp_init(struct sk_buff *skb); 102 #endif /* __MLX5_EN_PTP_H__ */ 103