ath10k: add tracing for rx descriptor

Upon the reception of frame, the descriptor status are reported
to user space by tracepoint. This is useful for collecting rx
statistics.

Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

2 files changed, 33 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index a078451b4620..7add88ea0e2e 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -316,6 +316,7 @@ static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt,
         int msdu_len, msdu_chaining = 0;
         struct sk_buff *msdu, *next;
         struct htt_rx_desc *rx_desc;
+        u32 tsf;
 
         lockdep_assert_held(&htt->rx_ring.lock);
 
@@ -447,6 +448,9 @@ static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt,
                 last_msdu = __le32_to_cpu(rx_desc->msdu_end.info0) &
                                 RX_MSDU_END_INFO0_LAST_MSDU;
 
+                tsf = __le32_to_cpu(rx_desc->ppdu_end.tsf_timestamp);
+                trace_ath10k_htt_rx_desc(ar, tsf, &rx_desc->attention,
+                                         sizeof(*rx_desc) - sizeof(u32));
                 if (last_msdu) {
                         msdu->next = NULL;
                         break;
diff --git a/drivers/net/wireless/ath/ath10k/trace.h b/drivers/net/wireless/ath/ath10k/trace.h
index 971ff23b6007..3841667e3a85 100644
--- a/drivers/net/wireless/ath/ath10k/trace.h
+++ b/drivers/net/wireless/ath/ath10k/trace.h
@@ -281,6 +281,35 @@ TRACE_EVENT(ath10k_htt_pktlog,
          )
 );
 
+TRACE_EVENT(ath10k_htt_rx_desc,
+            TP_PROTO(struct ath10k *ar, u32 tsf, void *rxdesc, u16 len),
+
+        TP_ARGS(ar, tsf, rxdesc, len),
+
+        TP_STRUCT__entry(
+                __string(device, dev_name(ar->dev))
+                __string(driver, dev_driver_string(ar->dev))
+                __field(u32, tsf)
+                __field(u16, len)
+                __dynamic_array(u8, rxdesc, len)
+        ),
+
+        TP_fast_assign(
+                __assign_str(device, dev_name(ar->dev));
+                __assign_str(driver, dev_driver_string(ar->dev));
+                __entry->tsf = tsf;
+                __entry->len = len;
+                memcpy(__get_dynamic_array(rxdesc), rxdesc, len);
+        ),
+
+        TP_printk(
+                "%s %s %u len %hu",
+                __get_str(driver),
+                __get_str(device),
+                __entry->tsf,
+                __entry->len
+         )
+);
 #endif /* _TRACE_H_ || TRACE_HEADER_MULTI_READ*/
 
 /* we don't want to use include/trace/events */