dc4f3eb08a
On Spectrum-1, timestamped PTP packets and the corresponding timestamps need to
be kept in caches until both are available, at which point they are matched up
and packets forwarded as appropriate. However, not all packets will ever see
their timestamp, and not all timestamps will ever see their packet. It is
necessary to dispose of such abandoned entries, so a garbage collector was
introduced in commit 5d23e41597 ("mlxsw: spectrum: PTP: Garbage-collect
unmatched entries").
If these GC events happen often, it is a sign of a problem. However because this
whole mechanism is taking place behind the scenes, there is no direct way to
determine whether garbage collection took place.
Therefore to fix this, on Spectrum-1 only, expose four artificial ethtool
counters for the GC events: GCd timestamps and packets, in TX and RX directions.
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
219 lines
5.1 KiB
C
219 lines
5.1 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
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/* Copyright (c) 2019 Mellanox Technologies. All rights reserved */
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#ifndef _MLXSW_SPECTRUM_PTP_H
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#define _MLXSW_SPECTRUM_PTP_H
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#include <linux/device.h>
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#include <linux/rhashtable.h>
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struct mlxsw_sp;
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struct mlxsw_sp_port;
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struct mlxsw_sp_ptp_clock;
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enum {
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MLXSW_SP_PTP_MESSAGE_TYPE_SYNC,
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MLXSW_SP_PTP_MESSAGE_TYPE_DELAY_REQ,
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MLXSW_SP_PTP_MESSAGE_TYPE_PDELAY_REQ,
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MLXSW_SP_PTP_MESSAGE_TYPE_PDELAY_RESP,
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};
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static inline int mlxsw_sp_ptp_get_ts_info_noptp(struct ethtool_ts_info *info)
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{
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info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
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SOF_TIMESTAMPING_SOFTWARE;
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info->phc_index = -1;
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return 0;
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}
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#if IS_REACHABLE(CONFIG_PTP_1588_CLOCK)
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struct mlxsw_sp_ptp_clock *
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mlxsw_sp1_ptp_clock_init(struct mlxsw_sp *mlxsw_sp, struct device *dev);
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void mlxsw_sp1_ptp_clock_fini(struct mlxsw_sp_ptp_clock *clock);
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struct mlxsw_sp_ptp_state *mlxsw_sp1_ptp_init(struct mlxsw_sp *mlxsw_sp);
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void mlxsw_sp1_ptp_fini(struct mlxsw_sp_ptp_state *ptp_state);
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void mlxsw_sp1_ptp_receive(struct mlxsw_sp *mlxsw_sp, struct sk_buff *skb,
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u8 local_port);
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void mlxsw_sp1_ptp_transmitted(struct mlxsw_sp *mlxsw_sp,
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struct sk_buff *skb, u8 local_port);
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void mlxsw_sp1_ptp_got_timestamp(struct mlxsw_sp *mlxsw_sp, bool ingress,
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u8 local_port, u8 message_type,
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u8 domain_number, u16 sequence_id,
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u64 timestamp);
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int mlxsw_sp1_ptp_hwtstamp_get(struct mlxsw_sp_port *mlxsw_sp_port,
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struct hwtstamp_config *config);
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int mlxsw_sp1_ptp_hwtstamp_set(struct mlxsw_sp_port *mlxsw_sp_port,
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struct hwtstamp_config *config);
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void mlxsw_sp1_ptp_shaper_work(struct work_struct *work);
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int mlxsw_sp1_ptp_get_ts_info(struct mlxsw_sp *mlxsw_sp,
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struct ethtool_ts_info *info);
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int mlxsw_sp1_get_stats_count(void);
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void mlxsw_sp1_get_stats_strings(u8 **p);
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void mlxsw_sp1_get_stats(struct mlxsw_sp_port *mlxsw_sp_port,
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u64 *data, int data_index);
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#else
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static inline struct mlxsw_sp_ptp_clock *
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mlxsw_sp1_ptp_clock_init(struct mlxsw_sp *mlxsw_sp, struct device *dev)
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{
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return NULL;
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}
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static inline void mlxsw_sp1_ptp_clock_fini(struct mlxsw_sp_ptp_clock *clock)
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{
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}
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static inline struct mlxsw_sp_ptp_state *
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mlxsw_sp1_ptp_init(struct mlxsw_sp *mlxsw_sp)
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{
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return NULL;
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}
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static inline void mlxsw_sp1_ptp_fini(struct mlxsw_sp_ptp_state *ptp_state)
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{
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}
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static inline void mlxsw_sp1_ptp_receive(struct mlxsw_sp *mlxsw_sp,
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struct sk_buff *skb, u8 local_port)
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{
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mlxsw_sp_rx_listener_no_mark_func(skb, local_port, mlxsw_sp);
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}
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static inline void mlxsw_sp1_ptp_transmitted(struct mlxsw_sp *mlxsw_sp,
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struct sk_buff *skb, u8 local_port)
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{
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dev_kfree_skb_any(skb);
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}
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static inline void
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mlxsw_sp1_ptp_got_timestamp(struct mlxsw_sp *mlxsw_sp, bool ingress,
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u8 local_port, u8 message_type,
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u8 domain_number,
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u16 sequence_id, u64 timestamp)
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{
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}
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static inline int
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mlxsw_sp1_ptp_hwtstamp_get(struct mlxsw_sp_port *mlxsw_sp_port,
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struct hwtstamp_config *config)
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{
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return -EOPNOTSUPP;
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}
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static inline int
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mlxsw_sp1_ptp_hwtstamp_set(struct mlxsw_sp_port *mlxsw_sp_port,
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struct hwtstamp_config *config)
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{
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return -EOPNOTSUPP;
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}
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static inline void mlxsw_sp1_ptp_shaper_work(struct work_struct *work)
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{
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}
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static inline int mlxsw_sp1_ptp_get_ts_info(struct mlxsw_sp *mlxsw_sp,
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struct ethtool_ts_info *info)
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{
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return mlxsw_sp_ptp_get_ts_info_noptp(info);
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}
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static inline int mlxsw_sp1_get_stats_count(void)
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{
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return 0;
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}
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static inline void mlxsw_sp1_get_stats_strings(u8 **p)
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{
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}
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static inline void mlxsw_sp1_get_stats(struct mlxsw_sp_port *mlxsw_sp_port,
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u64 *data, int data_index)
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{
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}
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#endif
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static inline struct mlxsw_sp_ptp_clock *
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mlxsw_sp2_ptp_clock_init(struct mlxsw_sp *mlxsw_sp, struct device *dev)
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{
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return NULL;
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}
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static inline void mlxsw_sp2_ptp_clock_fini(struct mlxsw_sp_ptp_clock *clock)
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{
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}
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static inline struct mlxsw_sp_ptp_state *
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mlxsw_sp2_ptp_init(struct mlxsw_sp *mlxsw_sp)
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{
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return NULL;
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}
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static inline void mlxsw_sp2_ptp_fini(struct mlxsw_sp_ptp_state *ptp_state)
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{
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}
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static inline void mlxsw_sp2_ptp_receive(struct mlxsw_sp *mlxsw_sp,
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struct sk_buff *skb, u8 local_port)
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{
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mlxsw_sp_rx_listener_no_mark_func(skb, local_port, mlxsw_sp);
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}
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static inline void mlxsw_sp2_ptp_transmitted(struct mlxsw_sp *mlxsw_sp,
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struct sk_buff *skb, u8 local_port)
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{
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dev_kfree_skb_any(skb);
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}
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static inline int
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mlxsw_sp2_ptp_hwtstamp_get(struct mlxsw_sp_port *mlxsw_sp_port,
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struct hwtstamp_config *config)
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{
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return -EOPNOTSUPP;
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}
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static inline int
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mlxsw_sp2_ptp_hwtstamp_set(struct mlxsw_sp_port *mlxsw_sp_port,
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struct hwtstamp_config *config)
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{
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return -EOPNOTSUPP;
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}
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static inline void mlxsw_sp2_ptp_shaper_work(struct work_struct *work)
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{
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}
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static inline int mlxsw_sp2_ptp_get_ts_info(struct mlxsw_sp *mlxsw_sp,
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struct ethtool_ts_info *info)
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{
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return mlxsw_sp_ptp_get_ts_info_noptp(info);
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}
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static inline int mlxsw_sp2_get_stats_count(void)
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{
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return 0;
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}
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static inline void mlxsw_sp2_get_stats_strings(u8 **p)
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{
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}
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static inline void mlxsw_sp2_get_stats(struct mlxsw_sp_port *mlxsw_sp_port,
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u64 *data, int data_index)
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{
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}
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#endif
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