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
mlx5e_use_ptpsq(struct sk_buff * skb)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