mlxsw: spectrum: Support ethtool 'get_ts_info' callback in Spectrum-2

Browse source

The 'get_ts_info' callback is used for obtaining information about
time stamping and PTP hardware clock capabilities of a network device.

The existing function of Spectrum-1 is used to advertise the PHC
capabilities and the supported RX and TX filters. Implement a similar
function for Spectrum-2, expose that the supported 'rx_filters' are all
PTP event packets, as for these packets the driver fills the time stamp
from the CQE in the SKB.

In the future, mlxsw driver will be extended to support one-step PTP in
Spectrum-2 and newer ASICs. Then additional 'tx_types' will be supported.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Danielle Ratson 2022-07-27 09:23:28 +03:00 • committed by David S. Miller

parent 08ef8bc825

commit eba28aaf2f

2 changed files with 28 additions and 6 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

19

drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c

View file

15

drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.h

View file