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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>
This commit is contained in:
Rajkumar Manoharan 2014-10-03 08:02:47 +03:00 committed by Kalle Valo
parent bfdd7937ab
commit a0883cf7e7
2 changed files with 33 additions and 0 deletions
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4
drivers/net/wireless/ath/ath10k/htt_rx.c
View File

@ -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;

29
drivers/net/wireless/ath/ath10k/trace.h
View File

@ -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 */