diff options
| author | Petr Machata <petrm@mellanox.com> | 2019-06-30 09:04:56 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-01 18:58:34 -0700 |
| commit | d92e4e6e33c8b19635be70fb8935b627d2e4f8fe (patch) | |
| tree | e7d061f47644998173177687f9cb9013b6c9a85d /drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.h | |
| parent | 89e602ee6e82626cc74f6615950d3e5a26d7bdc9 (diff) | |
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/spectrum_ptp.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.h index 0f66e63e229c..40c9e82e2920 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.h @@ -28,6 +28,11 @@ void mlxsw_sp1_ptp_receive(struct mlxsw_sp *mlxsw_sp, struct sk_buff *skb, void mlxsw_sp1_ptp_transmitted(struct mlxsw_sp *mlxsw_sp, struct sk_buff *skb, u8 local_port); +void mlxsw_sp1_ptp_got_timestamp(struct mlxsw_sp *mlxsw_sp, bool ingress, + u8 local_port, u8 message_type, + u8 domain_number, u16 sequence_id, + u64 timestamp); + #else static inline struct mlxsw_sp_ptp_clock * @@ -62,6 +67,14 @@ static inline void mlxsw_sp1_ptp_transmitted(struct mlxsw_sp *mlxsw_sp, dev_kfree_skb_any(skb); } +static inline void +mlxsw_sp1_ptp_got_timestamp(struct mlxsw_sp *mlxsw_sp, bool ingress, + u8 local_port, u8 message_type, + u8 domain_number, + u16 sequence_id, u64 timestamp) +{ +} + #endif static inline struct mlxsw_sp_ptp_clock * |