From 39e5308b3250666cc92c5ca33a667698ac645bd2 Mon Sep 17 00:00:00 2001 From: Yangbo Lu Date: Tue, 27 Apr 2021 12:22:03 +0800 Subject: net: mscc: ocelot: support PTP Sync one-step timestamping Although HWTSTAMP_TX_ONESTEP_SYNC existed in ioctl for hardware timestamp configuration, the PTP Sync one-step timestamping had never been supported. This patch is to truely support it. - ocelot_port_txtstamp_request() This function handles tx timestamp request by storing ptp_cmd(tx timestamp type) in OCELOT_SKB_CB(skb)->ptp_cmd, and additionally for two-step timestamp storing ts_id in OCELOT_SKB_CB(clone)->ptp_cmd. - ocelot_ptp_rew_op() During xmit, this function is called to get rew_op (rewriter option) by checking skb->cb for tx timestamp request, and configure to transmitting. Non-onestep-Sync packet with one-step timestamp request falls back to use two-step timestamp. Signed-off-by: Yangbo Lu Acked-by: Richard Cochran Signed-off-by: David S. Miller --- include/soc/mscc/ocelot.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/soc') diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h index f7632519cb9c..2f5ce4d4fdbf 100644 --- a/include/soc/mscc/ocelot.h +++ b/include/soc/mscc/ocelot.h @@ -691,6 +691,7 @@ struct ocelot_policer { struct ocelot_skb_cb { struct sk_buff *clone; + u8 ptp_cmd; u8 ts_id; }; @@ -748,15 +749,16 @@ u32 __ocelot_target_read_ix(struct ocelot *ocelot, enum ocelot_target target, void __ocelot_target_write_ix(struct ocelot *ocelot, enum ocelot_target target, u32 val, u32 reg, u32 offset); -/* Packet I/O */ #if IS_ENABLED(CONFIG_MSCC_OCELOT_SWITCH_LIB) +/* Packet I/O */ bool ocelot_can_inject(struct ocelot *ocelot, int grp); void ocelot_port_inject_frame(struct ocelot *ocelot, int port, int grp, u32 rew_op, struct sk_buff *skb); int ocelot_xtr_poll_frame(struct ocelot *ocelot, int grp, struct sk_buff **skb); void ocelot_drain_cpu_queue(struct ocelot *ocelot, int grp); +u32 ocelot_ptp_rew_op(struct sk_buff *skb); #else static inline bool ocelot_can_inject(struct ocelot *ocelot, int grp) @@ -780,6 +782,10 @@ static inline void ocelot_drain_cpu_queue(struct ocelot *ocelot, int grp) { } +static inline u32 ocelot_ptp_rew_op(struct sk_buff *skb) +{ + return 0; +} #endif /* Hardware initialization */ -- cgit v1.2.3