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net: ocelot: add and export ocelot_ptp_rx_timestamp()

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In order to support PTP in FDMA, PTP handling code is needed. Since
this is the same as for register-based extraction, export it with
a new ocelot_ptp_rx_timestamp() function.

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Clément Léger 2021-12-09 16:49:09 +01:00 committed by Jakub Kicinski
parent e5150f0072
commit b471a71e52
2 changed files with 26 additions and 17 deletions
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41
drivers/net/ethernet/mscc/ocelot.c
View File

@ -1054,14 +1054,34 @@ static int ocelot_xtr_poll_xfh(struct ocelot *ocelot, int grp, u32 *xfh)
return 0;
}
int ocelot_xtr_poll_frame(struct ocelot *ocelot, int grp, struct sk_buff **nskb)
void ocelot_ptp_rx_timestamp(struct ocelot *ocelot, struct sk_buff *skb,
u64 timestamp)
{
struct skb_shared_hwtstamps *shhwtstamps;
u64 tod_in_ns, full_ts_in_ns;
struct timespec64 ts;
ocelot_ptp_gettime64(&ocelot->ptp_info, &ts);
tod_in_ns = ktime_set(ts.tv_sec, ts.tv_nsec);
if ((tod_in_ns & 0xffffffff) < timestamp)
full_ts_in_ns = (((tod_in_ns >> 32) - 1) << 32) |
timestamp;
else
full_ts_in_ns = (tod_in_ns & GENMASK_ULL(63, 32)) |
timestamp;
shhwtstamps = skb_hwtstamps(skb);
memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps));
shhwtstamps->hwtstamp = full_ts_in_ns;
}
EXPORT_SYMBOL(ocelot_ptp_rx_timestamp);
int ocelot_xtr_poll_frame(struct ocelot *ocelot, int grp, struct sk_buff **nskb)
{
u64 timestamp, src_port, len;
u32 xfh[OCELOT_TAG_LEN / 4];
struct net_device *dev;
struct timespec64 ts;
struct sk_buff *skb;
int sz, buf_len;
u32 val, *buf;
@ -1117,21 +1137,8 @@ int ocelot_xtr_poll_frame(struct ocelot *ocelot, int grp, struct sk_buff **nskb)
*buf = val;
}
if (ocelot->ptp) {
ocelot_ptp_gettime64(&ocelot->ptp_info, &ts);
tod_in_ns = ktime_set(ts.tv_sec, ts.tv_nsec);
if ((tod_in_ns & 0xffffffff) < timestamp)
full_ts_in_ns = (((tod_in_ns >> 32) - 1) << 32) |
timestamp;
else
full_ts_in_ns = (tod_in_ns & GENMASK_ULL(63, 32)) |
timestamp;
shhwtstamps = skb_hwtstamps(skb);
memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps));
shhwtstamps->hwtstamp = full_ts_in_ns;
}
if (ocelot->ptp)
ocelot_ptp_rx_timestamp(ocelot, skb, timestamp);
/* Everything we see on an interface that is in the HW bridge
* has already been forwarded.

2
include/soc/mscc/ocelot.h
View File

@ -797,6 +797,8 @@ void ocelot_port_inject_frame(struct ocelot *ocelot, int port, int grp,
void ocelot_ifh_port_set(void *ifh, int port, u32 rew_op, u32 vlan_tag);
int ocelot_xtr_poll_frame(struct ocelot *ocelot, int grp, struct sk_buff **skb);
void ocelot_drain_cpu_queue(struct ocelot *ocelot, int grp);
void ocelot_ptp_rx_timestamp(struct ocelot *ocelot, struct sk_buff *skb,
u64 timestamp);
/* Hardware initialization */
int ocelot_regfields_init(struct ocelot *ocelot,