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