diff options
| author | Christian Eggers <ceggers@arri.de> | 2023-01-10 14:19:24 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-01-13 08:40:41 +0000 |
| commit | 90188fff655d8efad79acdf60c3012ffcbbef716 (patch) | |
| tree | ba4f788ba0e8de376ca8f9614880c9db4b161435 /drivers/net/dsa/microchip/ksz_common.c | |
| parent | 2955762b372b791a8f4cd862cf0b5fef9c456449 (diff) | |
net: dsa: microchip: ptp: add packet reception timestamping
Rx Timestamping is done through 4 additional bytes in tail tag.
Whenever the ptp packet is received, the 4 byte hardware time stamped
value is added before 1 byte tail tag. Also, bit 7 in tail tag indicates
it as PTP frame. This 4 byte value is extracted from the tail tag and
reconstructed to absolute time and assigned to skb hwtstamp.
If the packet received in PDelay_Resp, then partial ingress timestamp
is subtracted from the correction field. Since user space tools expects
to be done in hardware.
Signed-off-by: Christian Eggers <ceggers@arri.de>
Co-developed-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/microchip/ksz_common.c')
| -rw-r--r-- | drivers/net/dsa/microchip/ksz_common.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index bdd068322ca0..b4e7d579ac51 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -2991,6 +2991,7 @@ static const struct dsa_switch_ops ksz_switch_ops = { .get_ts_info = ksz_get_ts_info, .port_hwtstamp_get = ksz_hwtstamp_get, .port_hwtstamp_set = ksz_hwtstamp_set, + .port_rxtstamp = ksz_port_rxtstamp, }; struct ksz_device *ksz_switch_alloc(struct device *base, void *priv) |