ath10k: add sta rx packet stats per tid

Added per tid sta counters for the following

- Total number MSDUs received from firmware
- Number of MSDUs received with errors like decryption, crc, mic ,etc.
- Number of MSDUs dropped in the driver
- A-MPDU/A-MSDU subframe stats
- Number of MSDUS passed to mac80211

All stats other than A-MPDU stats are only for received data frames.
A-MPDU stats might have stats for management frames when monitor
interface is active where management frames are notified both in wmi
and HTT interfaces.

These per tid stats can be enabled with tid bitmask through a debugfs
like below

 echo <tid_bitmask> > /sys/kernel/debug/ieee80211/phyX/ath10k/sta_tid_stats_mask

 tid 16 (tid_bitmask 0x10000) is used for non-qos data/management frames

The stats are read from
/sys/kernel/debug/ieee80211/phyX/netdev\:wlanX/stations/<sta_mac>/dump_tid_stats

Sample output:

 To enable rx stats for tid 0, 5 and 6,

 echo 0x00000061 > /sys/kernel/debug/ieee80211/phy0/ath10k/sta_tid_stats_mask

cat /sys/kernel/debug/ieee80211/phy0/netdev\:wlan15/stations/8c\:fd\:f0\:0a\:8e\:df/dump_tid_stats

  		Driver Rx pkt stats per tid, ([tid] count)
                ------------------------------------------
MSDUs from FW                   [00] 2567        [05] 3178        [06] 1089
MSDUs unchained                 [00] 0           [05] 0           [06] 0
MSDUs locally dropped:chained   [00] 0           [05] 0           [06] 0
MSDUs locally dropped:filtered  [00] 0           [05] 0           [06] 0
MSDUs queued for mac80211       [00] 2567        [05] 3178        [06] 1089
MSDUs with error:fcs_err        [00] 0           [05] 0           [06] 2
MSDUs with error:tkip_err       [00] 0           [05] 0           [06] 0
MSDUs with error:crypt_err      [00] 0           [05] 0           [06] 0
MSDUs with error:peer_idx_inval [00] 0           [05] 0           [06] 0

A-MPDU num subframes upto 10    [00] 2567        [05] 3178        [06] 1087
A-MPDU num subframes 11-20      [00] 0           [05] 0           [06] 0
A-MPDU num subframes 21-30      [00] 0           [05] 0           [06] 0
A-MPDU num subframes 31-40      [00] 0           [05] 0           [06] 0
A-MPDU num subframes 41-50      [00] 0           [05] 0           [06] 0
A-MPDU num subframes 51-60      [00] 0           [05] 0           [06] 0
A-MPDU num subframes >60        [00] 0           [05] 0           [06] 0

A-MSDU num subframes 1          [00] 2567        [05] 3178        [06] 1089
A-MSDU num subframes 2          [00] 0           [05] 0           [06] 0
A-MSDU num subframes 3          [00] 0           [05] 0           [06] 0
A-MSDU num subframes 4          [00] 0           [05] 0           [06] 0
A-MSDU num subframes >4         [00] 0           [05] 0           [06] 0

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index fe6b30356d3b..c624b96f8b84 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2005-2011 Atheros Communications Inc.
  * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
+ * Copyright (c) 2018, The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -354,6 +355,45 @@ struct ath10k_txq {
 	unsigned long num_push_allowed;
 };
 
+enum ath10k_pkt_rx_err {
+	ATH10K_PKT_RX_ERR_FCS,
+	ATH10K_PKT_RX_ERR_TKIP,
+	ATH10K_PKT_RX_ERR_CRYPT,
+	ATH10K_PKT_RX_ERR_PEER_IDX_INVAL,
+	ATH10K_PKT_RX_ERR_MAX,
+};
+
+enum ath10k_ampdu_subfrm_num {
+	ATH10K_AMPDU_SUBFRM_NUM_10,
+	ATH10K_AMPDU_SUBFRM_NUM_20,
+	ATH10K_AMPDU_SUBFRM_NUM_30,
+	ATH10K_AMPDU_SUBFRM_NUM_40,
+	ATH10K_AMPDU_SUBFRM_NUM_50,
+	ATH10K_AMPDU_SUBFRM_NUM_60,
+	ATH10K_AMPDU_SUBFRM_NUM_MORE,
+	ATH10K_AMPDU_SUBFRM_NUM_MAX,
+};
+
+enum ath10k_amsdu_subfrm_num {
+	ATH10K_AMSDU_SUBFRM_NUM_1,
+	ATH10K_AMSDU_SUBFRM_NUM_2,
+	ATH10K_AMSDU_SUBFRM_NUM_3,
+	ATH10K_AMSDU_SUBFRM_NUM_4,
+	ATH10K_AMSDU_SUBFRM_NUM_MORE,
+	ATH10K_AMSDU_SUBFRM_NUM_MAX,
+};
+
+struct ath10k_sta_tid_stats {
+	unsigned long int rx_pkt_from_fw;
+	unsigned long int rx_pkt_unchained;
+	unsigned long int rx_pkt_drop_chained;
+	unsigned long int rx_pkt_drop_filter;
+	unsigned long int rx_pkt_err[ATH10K_PKT_RX_ERR_MAX];
+	unsigned long int rx_pkt_queued_for_mac;
+	unsigned long int rx_pkt_ampdu[ATH10K_AMPDU_SUBFRM_NUM_MAX];
+	unsigned long int rx_pkt_amsdu[ATH10K_AMSDU_SUBFRM_NUM_MAX];
+};
+
 struct ath10k_sta {
 	struct ath10k_vif *arvif;
 
@@ -371,6 +411,9 @@ struct ath10k_sta {
 #ifdef CONFIG_MAC80211_DEBUGFS
 	/* protected by conf_mutex */
 	bool aggr_mode;
+
+	/* Protected with ar->data_lock */
+	struct ath10k_sta_tid_stats tid_stats[IEEE80211_NUM_TIDS + 1];
 #endif
 };
 
@@ -1019,6 +1062,8 @@ struct ath10k {
 
 	void *ce_priv;
 
+	u32 sta_tid_stats_mask;
+
 	/* must be last */
 	u8 drv_priv[0] __aligned(sizeof(void *));
 };