[PATCH net-next 06/10] ice: add rx timestamp tracepoint for debugging
WARM2d
REVIEWED: 1 (0M)
From: Tony Nguyen <anthony.l.nguyen@intel.com>
Date: 2026-09-29 22:42:08
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
1 review trailer.
From: Przemyslaw Korba <redacted> Add ice_rx_hwtstamp trace event to help debug PTP rx timestamp issues. The trace captures cached_time, ts_high, and the extended ts_ns value in ice_ptp_get_rx_hwts(). Enable with: echo 1 > /sys/kernel/debug/tracing/events/ice/ice_rx_hwtstamp/enable cat /sys/kernel/debug/tracing/trace_pipe Signed-off-by: Przemyslaw Korba <redacted> Reviewed-by: Aleksandr Loktionov <redacted> Tested-by: Rinitha S <redacted> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> --- drivers/net/ethernet/intel/ice/ice_ptp.c | 2 ++ drivers/net/ethernet/intel/ice/ice_trace.h | 18 ++++++++++++++++++ 2 files changed, 20 insertions(+)
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c
index e54a98a0bdd0..b781004f856d 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c@@ -2330,6 +2330,8 @@ u64 ice_ptp_get_rx_hwts(const union ice_32b_rx_flex_desc *rx_desc, ts_high = le32_to_cpu(rx_desc->wb.flex_ts.ts_high); ts_ns = ice_ptp_extend_32b_ts(cached_time, ts_high); + ice_trace(rx_hwtstamp, cached_time, ts_high, ts_ns); + return ts_ns; }
diff --git a/drivers/net/ethernet/intel/ice/ice_trace.h b/drivers/net/ethernet/intel/ice/ice_trace.h
index 7568c917cdbe..7c43683a77d4 100644
--- a/drivers/net/ethernet/intel/ice/ice_trace.h
+++ b/drivers/net/ethernet/intel/ice/ice_trace.h@@ -261,6 +261,24 @@ DEFINE_TX_TSTAMP_OP_EVENT(ice_tx_tstamp_fw_req); DEFINE_TX_TSTAMP_OP_EVENT(ice_tx_tstamp_fw_done); DEFINE_TX_TSTAMP_OP_EVENT(ice_tx_tstamp_complete); +/* Trace event for Rx timestamp */ +TRACE_EVENT(ice_rx_hwtstamp, + TP_PROTO(u64 cached_time, u32 ts_high, u64 ts_ns), + + TP_ARGS(cached_time, ts_high, ts_ns), + + TP_STRUCT__entry(__field(u64, cached_time) + __field(u32, ts_high) + __field(u64, ts_ns)), + + TP_fast_assign(__entry->cached_time = cached_time; + __entry->ts_high = ts_high; + __entry->ts_ns = ts_ns;), + + TP_printk("cached_time=%llu ts_high=%u ts_ns=%llu", + __entry->cached_time, __entry->ts_high, __entry->ts_ns) +); + DECLARE_EVENT_CLASS(ice_esw_br_fdb_template, TP_PROTO(struct ice_esw_br_fdb_entry *fdb), TP_ARGS(fdb),
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2.47.1