1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h b/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h
new file mode 100644
index 000000000..cc7efde88
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/* Copyright (c) 2020 Mellanox Technologies. */
+
+#ifndef __MLX5_EN_PTP_H__
+#define __MLX5_EN_PTP_H__
+
+#include "en.h"
+#include "en_stats.h"
+#include "en/txrx.h"
+#include <linux/ptp_classify.h>
+
+#define MLX5E_PTP_CHANNEL_IX 0
+
+struct mlx5e_ptpsq {
+	struct mlx5e_txqsq       txqsq;
+	struct mlx5e_cq          ts_cq;
+	u16                      skb_fifo_cc;
+	u16                      skb_fifo_pc;
+	struct mlx5e_skb_fifo    skb_fifo;
+	struct mlx5e_ptp_cq_stats *cq_stats;
+	u16                      ts_cqe_ctr_mask;
+};
+
+enum {
+	MLX5E_PTP_STATE_TX,
+	MLX5E_PTP_STATE_RX,
+	MLX5E_PTP_STATE_NUM_STATES,
+};
+
+struct mlx5e_ptp {
+	/* data path */
+	struct mlx5e_ptpsq         ptpsq[MLX5E_MAX_NUM_TC];
+	struct mlx5e_rq            rq;
+	struct napi_struct         napi;
+	struct device             *pdev;
+	struct net_device         *netdev;
+	__be32                     mkey_be;
+	u8                         num_tc;
+	u8                         lag_port;
+
+	/* data path - accessed per napi poll */
+	struct mlx5e_ch_stats     *stats;
+
+	/* control */
+	struct mlx5e_priv         *priv;
+	struct mlx5_core_dev      *mdev;
+	struct hwtstamp_config    *tstamp;
+	DECLARE_BITMAP(state, MLX5E_PTP_STATE_NUM_STATES);
+};
+
+static inline bool mlx5e_use_ptpsq(struct sk_buff *skb)
+{
+	struct flow_keys fk;
+
+	if (!(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP))
+		return false;
+
+	if (!skb_flow_dissect_flow_keys(skb, &fk, 0))
+		return false;
+
+	if (fk.basic.n_proto == htons(ETH_P_1588))
+		return true;
+
+	if (fk.basic.n_proto != htons(ETH_P_IP) &&
+	    fk.basic.n_proto != htons(ETH_P_IPV6))
+		return false;
+
+	return (fk.basic.ip_proto == IPPROTO_UDP &&
+		fk.ports.dst == htons(PTP_EV_PORT));
+}
+
+static inline bool mlx5e_ptpsq_fifo_has_room(struct mlx5e_txqsq *sq)
+{
+	if (!sq->ptpsq)
+		return true;
+
+	return mlx5e_skb_fifo_has_room(&sq->ptpsq->skb_fifo);
+}
+
+int mlx5e_ptp_open(struct mlx5e_priv *priv, struct mlx5e_params *params,
+		   u8 lag_port, struct mlx5e_ptp **cp);
+void mlx5e_ptp_close(struct mlx5e_ptp *c);
+void mlx5e_ptp_activate_channel(struct mlx5e_ptp *c);
+void mlx5e_ptp_deactivate_channel(struct mlx5e_ptp *c);
+int mlx5e_ptp_get_rqn(struct mlx5e_ptp *c, u32 *rqn);
+int mlx5e_ptp_alloc_rx_fs(struct mlx5e_flow_steering *fs,
+			  const struct mlx5e_profile *profile);
+void mlx5e_ptp_free_rx_fs(struct mlx5e_flow_steering *fs,
+			  const struct mlx5e_profile *profile);
+int mlx5e_ptp_rx_manage_fs(struct mlx5e_priv *priv, bool set);
+
+enum {
+	MLX5E_SKB_CB_CQE_HWTSTAMP  = BIT(0),
+	MLX5E_SKB_CB_PORT_HWTSTAMP = BIT(1),
+};
+
+void mlx5e_skb_cb_hwtstamp_handler(struct sk_buff *skb, int hwtstamp_type,
+				   ktime_t hwtstamp,
+				   struct mlx5e_ptp_cq_stats *cq_stats);
+
+void mlx5e_skb_cb_hwtstamp_init(struct sk_buff *skb);
+#endif /* __MLX5_EN_PTP_H__ */