LXR linux/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h

   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
  13struct 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
  22enum {
  23        MLX5E_PTP_STATE_TX,
  24        MLX5E_PTP_STATE_RX,
  25        MLX5E_PTP_STATE_NUM_STATES,
  26};
  27
  28struct 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
  49static 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
  70int mlx5e_ptp_open(struct mlx5e_priv *priv, struct mlx5e_params *params,
  71                   u8 lag_port, struct mlx5e_ptp **cp);
  72void mlx5e_ptp_close(struct mlx5e_ptp *c);
  73void mlx5e_ptp_activate_channel(struct mlx5e_ptp *c);
  74void mlx5e_ptp_deactivate_channel(struct mlx5e_ptp *c);
  75int mlx5e_ptp_get_rqn(struct mlx5e_ptp *c, u32 *rqn);
  76int mlx5e_ptp_alloc_rx_fs(struct mlx5e_priv *priv);
  77void mlx5e_ptp_free_rx_fs(struct mlx5e_priv *priv);
  78int mlx5e_ptp_rx_manage_fs(struct mlx5e_priv *priv, bool set);
  79
  80enum {
  81        MLX5E_SKB_CB_CQE_HWTSTAMP  = BIT(0),
  82        MLX5E_SKB_CB_PORT_HWTSTAMP = BIT(1),
  83};
  84
  85void 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
  89void mlx5e_skb_cb_hwtstamp_init(struct sk_buff *skb);
  90#endif /* __MLX5_EN_PTP_H__ */
  91