diff options
| author | Petr Machata <petrm@mellanox.com> | 2019-06-30 09:04:56 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-02 04:58:34 +0300 |
| commit | d92e4e6e33c8b19635be70fb8935b627d2e4f8fe (patch) | |
| tree | e7d061f47644998173177687f9cb9013b6c9a85d /drivers/net/ethernet/mellanox/mlxsw/Kconfig | |
| parent | 89e602ee6e82626cc74f6615950d3e5a26d7bdc9 (diff) | |
| download | linux-d92e4e6e33c8b19635be70fb8935b627d2e4f8fe.tar.xz | |
mlxsw: spectrum: PTP: Support timestamping on Spectrum-1
On Spectrum-1, timestamps arrive through a pair of dedicated events:
MLXSW_TRAP_ID_PTP_ING_FIFO and _EGR_FIFO. The payload delivered with
those traps is contents of the timestamp FIFO at a given port in a given
direction. Add a Spectrum-1-specific handler for these two events which
decodes the timestamps and forwards them to the PTP module.
Add a function that parses a packet, dispatching to ptp_classify_raw(),
and decodes PTP message type, domain number, and sequence ID. Add a new
mlxsw dependency on the PTP classifier.
Add helpers that can store and retrieve unmatched timestamps and SKBs to
the hash table added in a preceding patch.
Add the matching code itself: upon arrival of a timestamp or a packet,
look up the corresponding unmatched entry, and match it up. If there is
none, add a new unmatched entry. This logic is the same on ingress as on
egress.
Packets and timestamps that never matched need to be eventually disposed
of. A garbage collector added in a follow-up patch will take care of
that. Since currently all this code is turned off, no crud will
accumulate in the hash table.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/Kconfig')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/Kconfig b/drivers/net/ethernet/mellanox/mlxsw/Kconfig index b5d64aed259e..06c80343d9ed 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/Kconfig +++ b/drivers/net/ethernet/mellanox/mlxsw/Kconfig @@ -84,6 +84,7 @@ config MLXSW_SPECTRUM select OBJAGG select MLXFW imply PTP_1588_CLOCK + select NET_PTP_CLASSIFY if PTP_1588_CLOCK default m ---help--- This driver supports Mellanox Technologies Spectrum Ethernet |