wifi: ath12k: Add support to parse requested stats_type

Add extended htt stats parser and print the corresponding TLVs associated
with the requested htt_stats_type.
Add support for TX PDEV related htt stats.

Sample output:
--------------
echo 1 > /sys/kernel/debug/ath12k/pci-0000\:06\:00.0/mac0/htt_stats_type
cat /sys/kernel/debug/ath12k/pci-0000\:06\:00.0/mac0/htt_stats

HTT_TX_PDEV_STATS_CMN_TLV:
mac_id = 0
comp_delivered = 0
self_triggers = 256
hw_queued = 275
hw_reaped = 275
underrun = 241
hw_paused = 0
hw_flush = 0
hw_filt = 1
tx_abort = 0
ppdu_ok = 246
mpdu_requeued = 0
tx_xretry = 0
data_rc = 3
mpdu_dropped_xretry = 0
illegal_rate_phy_err = 0
cont_xretry = 0
tx_timeout = 0
tx_time_dur_data = 0
pdev_resets = 0
phy_underrun = 0
txop_ovf = 0
seq_posted = 247
seq_failed_queueing = 0
seq_completed = 247
seq_restarted = 0
seq_txop_repost_stop = 0
next_seq_cancel = 0
dl_mu_mimo_seq_posted = 0
dl_mu_ofdma_seq_posted = 0
ul_mu_mimo_seq_posted = 0
ul_mu_ofdma_seq_posted = 0
mu_mimo_peer_blacklisted = 0
seq_qdepth_repost_stop = 0
seq_min_msdu_repost_stop = 0
mu_seq_min_msdu_repost_stop = 0
seq_switch_hw_paused = 0
next_seq_posted_dsr = 0
seq_posted_isr = 0
seq_ctrl_cached = 0
mpdu_count_tqm = 0
msdu_count_tqm = 0
mpdu_removed_tqm = 0
msdu_removed_tqm = 0
remove_mpdus_max_retries = 0
mpdus_sw_flush = 0
mpdus_hw_filter = 0
mpdus_truncated = 0
mpdus_ack_failed = 0
mpdus_expired = 0
mpdus_seq_hw_retry = 0
ack_tlv_proc = 0
coex_abort_mpdu_cnt_valid = 0
coex_abort_mpdu_cnt = 5
num_total_ppdus_tried_ota = 5
num_data_ppdus_tried_ota = 0
local_ctrl_mgmt_enqued = 247
local_ctrl_mgmt_freed = 247
local_data_enqued = 0
local_data_freed = 0
mpdu_tried = 0
isr_wait_seq_posted = 0
tx_active_dur_us_low = 0
tx_active_dur_us_high = 0
fes_offsets_err_cnt = 0

HTT_TX_PDEV_STATS_URRN_TLV:
urrn_stats =  0:0, 1:241, 2:0

HTT_TX_PDEV_STATS_SIFS_TLV:
sifs_status =  0:0, 1:0, 2:0, 3:0, 4:0, 5:0, 6:0, 7:0, 8:0

HTT_TX_PDEV_STATS_FLUSH_TLV:
flush_errs =  0:0, 1:0, 2:0, 3:0, 4:0, 5:0, 6:0, 7:0, 8:0, 9:0, 10:0,
11:0, 12:0, 13:0, 14:0, 15:0, 16:0, 17:0, 18:0, 19:0, 20:0, 21:0, 22:0,
23:0, 24:0, 25:0, 26:0, 27:0, 28:0, 29:0, 30:0, 31:0, 32:0, 33:0, 34:0,
35:0, 36:0, 37:0, 38:0, 39:0, 40:0, 41:0, 42:0, 43:0, 44:0, 45:0, 46:0,
47:0, 48:0, 49:0, 50:0, 51:0, 52:0, 53:0, 54:0, 55:0, 56:0, 57:0, 58:0,
59:0, 60:0, 61:0, 62:0, 63:0, 64:0, 65:0, 66:0, 67:0, 68:0, 69:0, 70:0,
71:0, 72:0, 73:0, 74:0, 75:0, 76:0, 77:0, 78:0, 79:0, 80:0, 81:0, 82:0,
83:0, 84:0, 85:0, 86:0, 87:0, 88:0, 89:0, 90:0, 91:0, 92:0, 93:0, 94:0,
95:0, 96:0, 97:0, 98:0, 99:0, 100:0, 101:0, 102:0, 103:0, 104:0, 105:0,
106:0, 107:0, 108:0, 109:0, 110:0, 111:0, 112:0, 113:0, 114:0, 115:0,
116:0, 117:0, 118:0, 119:0, 120:0, 121:0, 122:0, 123:0, 124:0, 125:0,
126:0, 127:0

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Dinesh Karthikeyan <quic_dinek@quicinc.com>
Co-developed-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com>
Signed-off-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://patch.msgid.link/20240626085854.2500681-4-quic_rgnanase@quicinc.com

drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c

@@ -9,6 +9,334 @@
 #include "debug.h"
 #include "debugfs_htt_stats.h"
 #include "dp_tx.h"
+#include "dp_rx.h"
+
+static u32
+print_array_to_buf(u8 *buf, u32 offset, const char *header,
+		   const __le32 *array, u32 array_len, const char *footer)
+{
+	int index = 0;
+	u8 i;
+
+	if (header) {
+		index += scnprintf(buf + offset,
+				   ATH12K_HTT_STATS_BUF_SIZE - offset,
+				   "%s = ", header);
+	}
+	for (i = 0; i < array_len; i++) {
+		index += scnprintf(buf + offset + index,
+				   (ATH12K_HTT_STATS_BUF_SIZE - offset) - index,
+				   " %u:%u,", i, le32_to_cpu(array[i]));
+	}
+	/* To overwrite the last trailing comma */
+	index--;
+	*(buf + offset + index) = '\0';
+
+	if (footer) {
+		index += scnprintf(buf + offset + index,
+				   (ATH12K_HTT_STATS_BUF_SIZE - offset) - index,
+				   "%s", footer);
+	}
+	return index;
+}
+
+static void
+htt_print_tx_pdev_stats_cmn_tlv(const void *tag_buf, u16 tag_len,
+				struct debug_htt_stats_req *stats_req)
+{
+	const struct ath12k_htt_tx_pdev_stats_cmn_tlv *htt_stats_buf = tag_buf;
+	u8 *buf = stats_req->buf;
+	u32 len = stats_req->buf_len;
+	u32 buf_len = ATH12K_HTT_STATS_BUF_SIZE;
+	u32 mac_id_word;
+
+	if (tag_len < sizeof(*htt_stats_buf))
+		return;
+
+	mac_id_word = le32_to_cpu(htt_stats_buf->mac_id__word);
+
+	len += scnprintf(buf + len, buf_len - len, "HTT_TX_PDEV_STATS_CMN_TLV:\n");
+	len += scnprintf(buf + len, buf_len - len, "mac_id = %u\n",
+			 u32_get_bits(mac_id_word, ATH12K_HTT_STATS_MAC_ID));
+	len += scnprintf(buf + len, buf_len - len, "comp_delivered = %u\n",
+			 le32_to_cpu(htt_stats_buf->comp_delivered));
+	len += scnprintf(buf + len, buf_len - len, "self_triggers = %u\n",
+			 le32_to_cpu(htt_stats_buf->self_triggers));
+	len += scnprintf(buf + len, buf_len - len, "hw_queued = %u\n",
+			 le32_to_cpu(htt_stats_buf->hw_queued));
+	len += scnprintf(buf + len, buf_len - len, "hw_reaped = %u\n",
+			 le32_to_cpu(htt_stats_buf->hw_reaped));
+	len += scnprintf(buf + len, buf_len - len, "underrun = %u\n",
+			 le32_to_cpu(htt_stats_buf->underrun));
+	len += scnprintf(buf + len, buf_len - len, "hw_paused = %u\n",
+			 le32_to_cpu(htt_stats_buf->hw_paused));
+	len += scnprintf(buf + len, buf_len - len, "hw_flush = %u\n",
+			 le32_to_cpu(htt_stats_buf->hw_flush));
+	len += scnprintf(buf + len, buf_len - len, "hw_filt = %u\n",
+			 le32_to_cpu(htt_stats_buf->hw_filt));
+	len += scnprintf(buf + len, buf_len - len, "tx_abort = %u\n",
+			 le32_to_cpu(htt_stats_buf->tx_abort));
+	len += scnprintf(buf + len, buf_len - len, "ppdu_ok = %u\n",
+			 le32_to_cpu(htt_stats_buf->ppdu_ok));
+	len += scnprintf(buf + len, buf_len - len, "mpdu_requeued = %u\n",
+			 le32_to_cpu(htt_stats_buf->mpdu_requed));
+	len += scnprintf(buf + len, buf_len - len, "tx_xretry = %u\n",
+			 le32_to_cpu(htt_stats_buf->tx_xretry));
+	len += scnprintf(buf + len, buf_len - len, "data_rc = %u\n",
+			 le32_to_cpu(htt_stats_buf->data_rc));
+	len += scnprintf(buf + len, buf_len - len, "mpdu_dropped_xretry = %u\n",
+			 le32_to_cpu(htt_stats_buf->mpdu_dropped_xretry));
+	len += scnprintf(buf + len, buf_len - len, "illegal_rate_phy_err = %u\n",
+			 le32_to_cpu(htt_stats_buf->illgl_rate_phy_err));
+	len += scnprintf(buf + len, buf_len - len, "cont_xretry = %u\n",
+			 le32_to_cpu(htt_stats_buf->cont_xretry));
+	len += scnprintf(buf + len, buf_len - len, "tx_timeout = %u\n",
+			 le32_to_cpu(htt_stats_buf->tx_timeout));
+	len += scnprintf(buf + len, buf_len - len, "tx_time_dur_data = %u\n",
+			 le32_to_cpu(htt_stats_buf->tx_time_dur_data));
+	len += scnprintf(buf + len, buf_len - len, "pdev_resets = %u\n",
+			 le32_to_cpu(htt_stats_buf->pdev_resets));
+	len += scnprintf(buf + len, buf_len - len, "phy_underrun = %u\n",
+			 le32_to_cpu(htt_stats_buf->phy_underrun));
+	len += scnprintf(buf + len, buf_len - len, "txop_ovf = %u\n",
+			 le32_to_cpu(htt_stats_buf->txop_ovf));
+	len += scnprintf(buf + len, buf_len - len, "seq_posted = %u\n",
+			 le32_to_cpu(htt_stats_buf->seq_posted));
+	len += scnprintf(buf + len, buf_len - len, "seq_failed_queueing = %u\n",
+			 le32_to_cpu(htt_stats_buf->seq_failed_queueing));
+	len += scnprintf(buf + len, buf_len - len, "seq_completed = %u\n",
+			 le32_to_cpu(htt_stats_buf->seq_completed));
+	len += scnprintf(buf + len, buf_len - len, "seq_restarted = %u\n",
+			 le32_to_cpu(htt_stats_buf->seq_restarted));
+	len += scnprintf(buf + len, buf_len - len, "seq_txop_repost_stop = %u\n",
+			 le32_to_cpu(htt_stats_buf->seq_txop_repost_stop));
+	len += scnprintf(buf + len, buf_len - len, "next_seq_cancel = %u\n",
+			 le32_to_cpu(htt_stats_buf->next_seq_cancel));
+	len += scnprintf(buf + len, buf_len - len, "dl_mu_mimo_seq_posted = %u\n",
+			 le32_to_cpu(htt_stats_buf->mu_seq_posted));
+	len += scnprintf(buf + len, buf_len - len, "dl_mu_ofdma_seq_posted = %u\n",
+			 le32_to_cpu(htt_stats_buf->mu_ofdma_seq_posted));
+	len += scnprintf(buf + len, buf_len - len, "ul_mu_mimo_seq_posted = %u\n",
+			 le32_to_cpu(htt_stats_buf->ul_mumimo_seq_posted));
+	len += scnprintf(buf + len, buf_len - len, "ul_mu_ofdma_seq_posted = %u\n",
+			 le32_to_cpu(htt_stats_buf->ul_ofdma_seq_posted));
+	len += scnprintf(buf + len, buf_len - len, "mu_mimo_peer_blacklisted = %u\n",
+			 le32_to_cpu(htt_stats_buf->num_mu_peer_blacklisted));
+	len += scnprintf(buf + len, buf_len - len, "seq_qdepth_repost_stop = %u\n",
+			 le32_to_cpu(htt_stats_buf->seq_qdepth_repost_stop));
+	len += scnprintf(buf + len, buf_len - len, "seq_min_msdu_repost_stop = %u\n",
+			 le32_to_cpu(htt_stats_buf->seq_min_msdu_repost_stop));
+	len += scnprintf(buf + len, buf_len - len, "mu_seq_min_msdu_repost_stop = %u\n",
+			 le32_to_cpu(htt_stats_buf->mu_seq_min_msdu_repost_stop));
+	len += scnprintf(buf + len, buf_len - len, "seq_switch_hw_paused = %u\n",
+			 le32_to_cpu(htt_stats_buf->seq_switch_hw_paused));
+	len += scnprintf(buf + len, buf_len - len, "next_seq_posted_dsr = %u\n",
+			 le32_to_cpu(htt_stats_buf->next_seq_posted_dsr));
+	len += scnprintf(buf + len, buf_len - len, "seq_posted_isr = %u\n",
+			 le32_to_cpu(htt_stats_buf->seq_posted_isr));
+	len += scnprintf(buf + len, buf_len - len, "seq_ctrl_cached = %u\n",
+			 le32_to_cpu(htt_stats_buf->seq_ctrl_cached));
+	len += scnprintf(buf + len, buf_len - len, "mpdu_count_tqm = %u\n",
+			 le32_to_cpu(htt_stats_buf->mpdu_count_tqm));
+	len += scnprintf(buf + len, buf_len - len, "msdu_count_tqm = %u\n",
+			 le32_to_cpu(htt_stats_buf->msdu_count_tqm));
+	len += scnprintf(buf + len, buf_len - len, "mpdu_removed_tqm = %u\n",
+			 le32_to_cpu(htt_stats_buf->mpdu_removed_tqm));
+	len += scnprintf(buf + len, buf_len - len, "msdu_removed_tqm = %u\n",
+			 le32_to_cpu(htt_stats_buf->msdu_removed_tqm));
+	len += scnprintf(buf + len, buf_len - len, "remove_mpdus_max_retries = %u\n",
+			 le32_to_cpu(htt_stats_buf->remove_mpdus_max_retries));
+	len += scnprintf(buf + len, buf_len - len, "mpdus_sw_flush = %u\n",
+			 le32_to_cpu(htt_stats_buf->mpdus_sw_flush));
+	len += scnprintf(buf + len, buf_len - len, "mpdus_hw_filter = %u\n",
+			 le32_to_cpu(htt_stats_buf->mpdus_hw_filter));
+	len += scnprintf(buf + len, buf_len - len, "mpdus_truncated = %u\n",
+			 le32_to_cpu(htt_stats_buf->mpdus_truncated));
+	len += scnprintf(buf + len, buf_len - len, "mpdus_ack_failed = %u\n",
+			 le32_to_cpu(htt_stats_buf->mpdus_ack_failed));
+	len += scnprintf(buf + len, buf_len - len, "mpdus_expired = %u\n",
+			 le32_to_cpu(htt_stats_buf->mpdus_expired));
+	len += scnprintf(buf + len, buf_len - len, "mpdus_seq_hw_retry = %u\n",
+			 le32_to_cpu(htt_stats_buf->mpdus_seq_hw_retry));
+	len += scnprintf(buf + len, buf_len - len, "ack_tlv_proc = %u\n",
+			 le32_to_cpu(htt_stats_buf->ack_tlv_proc));
+	len += scnprintf(buf + len, buf_len - len, "coex_abort_mpdu_cnt_valid = %u\n",
+			 le32_to_cpu(htt_stats_buf->coex_abort_mpdu_cnt_valid));
+	len += scnprintf(buf + len, buf_len - len, "coex_abort_mpdu_cnt = %u\n",
+			 le32_to_cpu(htt_stats_buf->coex_abort_mpdu_cnt));
+	len += scnprintf(buf + len, buf_len - len, "num_total_ppdus_tried_ota = %u\n",
+			 le32_to_cpu(htt_stats_buf->num_total_ppdus_tried_ota));
+	len += scnprintf(buf + len, buf_len - len, "num_data_ppdus_tried_ota = %u\n",
+			 le32_to_cpu(htt_stats_buf->num_data_ppdus_tried_ota));
+	len += scnprintf(buf + len, buf_len - len, "local_ctrl_mgmt_enqued = %u\n",
+			 le32_to_cpu(htt_stats_buf->local_ctrl_mgmt_enqued));
+	len += scnprintf(buf + len, buf_len - len, "local_ctrl_mgmt_freed = %u\n",
+			 le32_to_cpu(htt_stats_buf->local_ctrl_mgmt_freed));
+	len += scnprintf(buf + len, buf_len - len, "local_data_enqued = %u\n",
+			 le32_to_cpu(htt_stats_buf->local_data_enqued));
+	len += scnprintf(buf + len, buf_len - len, "local_data_freed = %u\n",
+			 le32_to_cpu(htt_stats_buf->local_data_freed));
+	len += scnprintf(buf + len, buf_len - len, "mpdu_tried = %u\n",
+			 le32_to_cpu(htt_stats_buf->mpdu_tried));
+	len += scnprintf(buf + len, buf_len - len, "isr_wait_seq_posted = %u\n",
+			 le32_to_cpu(htt_stats_buf->isr_wait_seq_posted));
+	len += scnprintf(buf + len, buf_len - len, "tx_active_dur_us_low = %u\n",
+			 le32_to_cpu(htt_stats_buf->tx_active_dur_us_low));
+	len += scnprintf(buf + len, buf_len - len, "tx_active_dur_us_high = %u\n",
+			 le32_to_cpu(htt_stats_buf->tx_active_dur_us_high));
+	len += scnprintf(buf + len, buf_len - len, "fes_offsets_err_cnt = %u\n\n",
+			 le32_to_cpu(htt_stats_buf->fes_offsets_err_cnt));
+
+	stats_req->buf_len = len;
+}
+
+static void
+htt_print_tx_pdev_stats_urrn_tlv(const void *tag_buf,
+				 u16 tag_len,
+				 struct debug_htt_stats_req *stats_req)
+{
+	const struct ath12k_htt_tx_pdev_stats_urrn_tlv *htt_stats_buf = tag_buf;
+	u8 *buf = stats_req->buf;
+	u32 len = stats_req->buf_len;
+	u32 buf_len = ATH12K_HTT_STATS_BUF_SIZE;
+	u16 num_elems = min_t(u16, (tag_len >> 2),
+			      HTT_TX_PDEV_MAX_URRN_STATS);
+
+	len += scnprintf(buf + len, buf_len - len,
+			"HTT_TX_PDEV_STATS_URRN_TLV:\n");
+
+	len += print_array_to_buf(buf, len, "urrn_stats", htt_stats_buf->urrn_stats,
+				  num_elems, "\n\n");
+
+	stats_req->buf_len = len;
+}
+
+static void
+htt_print_tx_pdev_stats_flush_tlv(const void *tag_buf,
+				  u16 tag_len,
+				  struct debug_htt_stats_req *stats_req)
+{
+	const struct ath12k_htt_tx_pdev_stats_flush_tlv *htt_stats_buf = tag_buf;
+	u8 *buf = stats_req->buf;
+	u32 len = stats_req->buf_len;
+	u32 buf_len = ATH12K_HTT_STATS_BUF_SIZE;
+	u16 num_elems = min_t(u16, (tag_len >> 2),
+			      ATH12K_HTT_TX_PDEV_MAX_FLUSH_REASON_STATS);
+
+	len += scnprintf(buf + len, buf_len - len,
+			 "HTT_TX_PDEV_STATS_FLUSH_TLV:\n");
+
+	len += print_array_to_buf(buf, len, "flush_errs", htt_stats_buf->flush_errs,
+				  num_elems, "\n\n");
+
+	stats_req->buf_len = len;
+}
+
+static void
+htt_print_tx_pdev_stats_sifs_tlv(const void *tag_buf,
+				 u16 tag_len,
+				 struct debug_htt_stats_req *stats_req)
+{
+	const struct ath12k_htt_tx_pdev_stats_sifs_tlv *htt_stats_buf = tag_buf;
+	u8 *buf = stats_req->buf;
+	u32 len = stats_req->buf_len;
+	u32 buf_len = ATH12K_HTT_STATS_BUF_SIZE;
+	u16 num_elems = min_t(u16, (tag_len >> 2),
+			      ATH12K_HTT_TX_PDEV_MAX_SIFS_BURST_STATS);
+
+	len += scnprintf(buf + len, buf_len - len,
+			 "HTT_TX_PDEV_STATS_SIFS_TLV:\n");
+
+	len += print_array_to_buf(buf, len, "sifs_status", htt_stats_buf->sifs_status,
+				  num_elems, "\n\n");
+
+	stats_req->buf_len = len;
+}
+
+static int ath12k_dbg_htt_ext_stats_parse(struct ath12k_base *ab,
+					  u16 tag, u16 len, const void *tag_buf,
+					  void *user_data)
+{
+	struct debug_htt_stats_req *stats_req = user_data;
+
+	switch (tag) {
+	case HTT_STATS_TX_PDEV_CMN_TAG:
+		htt_print_tx_pdev_stats_cmn_tlv(tag_buf, len, stats_req);
+		break;
+	case HTT_STATS_TX_PDEV_UNDERRUN_TAG:
+		htt_print_tx_pdev_stats_urrn_tlv(tag_buf, len, stats_req);
+		break;
+	case HTT_STATS_TX_PDEV_SIFS_TAG:
+		htt_print_tx_pdev_stats_sifs_tlv(tag_buf, len, stats_req);
+		break;
+	case HTT_STATS_TX_PDEV_FLUSH_TAG:
+		htt_print_tx_pdev_stats_flush_tlv(tag_buf, len, stats_req);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+void ath12k_debugfs_htt_ext_stats_handler(struct ath12k_base *ab,
+					  struct sk_buff *skb)
+{
+	struct ath12k_htt_extd_stats_msg *msg;
+	struct debug_htt_stats_req *stats_req;
+	struct ath12k *ar;
+	u32 len, pdev_id, stats_info;
+	u64 cookie;
+	int ret;
+	bool send_completion = false;
+
+	msg = (struct ath12k_htt_extd_stats_msg *)skb->data;
+	cookie = le64_to_cpu(msg->cookie);
+
+	if (u64_get_bits(cookie, ATH12K_HTT_STATS_COOKIE_MSB) !=
+			 ATH12K_HTT_STATS_MAGIC_VALUE) {
+		ath12k_warn(ab, "received invalid htt ext stats event\n");
+		return;
+	}
+
+	pdev_id = u64_get_bits(cookie, ATH12K_HTT_STATS_COOKIE_LSB);
+	rcu_read_lock();
+	ar = ath12k_mac_get_ar_by_pdev_id(ab, pdev_id);
+	if (!ar) {
+		ath12k_warn(ab, "failed to get ar for pdev_id %d\n", pdev_id);
+		goto exit;
+	}
+
+	stats_req = ar->debug.htt_stats.stats_req;
+	if (!stats_req)
+		goto exit;
+
+	spin_lock_bh(&ar->data_lock);
+
+	stats_info = le32_to_cpu(msg->info1);
+	stats_req->done = u32_get_bits(stats_info, ATH12K_HTT_T2H_EXT_STATS_INFO1_DONE);
+	if (stats_req->done)
+		send_completion = true;
+
+	spin_unlock_bh(&ar->data_lock);
+
+	len = u32_get_bits(stats_info, ATH12K_HTT_T2H_EXT_STATS_INFO1_LENGTH);
+	if (len > skb->len) {
+		ath12k_warn(ab, "invalid length %d for HTT stats", len);
+		goto exit;
+	}
+
+	ret = ath12k_dp_htt_tlv_iter(ab, msg->data, len,
+				     ath12k_dbg_htt_ext_stats_parse,
+				     stats_req);
+	if (ret)
+		ath12k_warn(ab, "Failed to parse tlv %d\n", ret);
+
+	if (send_completion)
+		complete(&stats_req->htt_stats_rcvd);
+exit:
+	rcu_read_unlock();
+}
 
 static ssize_t ath12k_read_htt_stats_type(struct file *file,
 					  char __user *user_buf,

drivers/net/wireless/ath/ath12k/debugfs_htt_stats.h

@@ -21,14 +21,134 @@
 
 void ath12k_debugfs_htt_stats_register(struct ath12k *ar);
 
+#ifdef CONFIG_ATH12K_DEBUGFS
+void ath12k_debugfs_htt_ext_stats_handler(struct ath12k_base *ab,
+					  struct sk_buff *skb);
+#else /* CONFIG_ATH12K_DEBUGFS */
+static inline void ath12k_debugfs_htt_ext_stats_handler(struct ath12k_base *ab,
+							struct sk_buff *skb)
+{
+}
+#endif
+
+/**
+ * DOC: target -> host extended statistics upload
+ *
+ * The following field definitions describe the format of the HTT
+ * target to host stats upload confirmation message.
+ * The message contains a cookie echoed from the HTT host->target stats
+ * upload request, which identifies which request the confirmation is
+ * for, and a single stats can span over multiple HTT stats indication
+ * due to the HTT message size limitation so every HTT ext stats
+ * indication will have tag-length-value stats information elements.
+ * The tag-length header for each HTT stats IND message also includes a
+ * status field, to indicate whether the request for the stat type in
+ * question was fully met, partially met, unable to be met, or invalid
+ * (if the stat type in question is disabled in the target).
+ * A Done bit 1's indicate the end of the of stats info elements.
+ *
+ *
+ * |31                         16|15    12|11|10 8|7   5|4       0|
+ * |--------------------------------------------------------------|
+ * |                   reserved                   |    msg type   |
+ * |--------------------------------------------------------------|
+ * |                         cookie LSBs                          |
+ * |--------------------------------------------------------------|
+ * |                         cookie MSBs                          |
+ * |--------------------------------------------------------------|
+ * |      stats entry length     | rsvd   | D|  S |   stat type   |
+ * |--------------------------------------------------------------|
+ * |                   type-specific stats info                   |
+ * |                      (see debugfs_htt_stats.h)               |
+ * |--------------------------------------------------------------|
+ * Header fields:
+ *  - MSG_TYPE
+ *    Bits 7:0
+ *    Purpose: Identifies this is a extended statistics upload confirmation
+ *             message.
+ *    Value: 0x1c
+ *  - COOKIE_LSBS
+ *    Bits 31:0
+ *    Purpose: Provide a mechanism to match a target->host stats confirmation
+ *        message with its preceding host->target stats request message.
+ *    Value: MSBs of the opaque cookie specified by the host-side requestor
+ *  - COOKIE_MSBS
+ *    Bits 31:0
+ *    Purpose: Provide a mechanism to match a target->host stats confirmation
+ *        message with its preceding host->target stats request message.
+ *    Value: MSBs of the opaque cookie specified by the host-side requestor
+ *
+ * Stats Information Element tag-length header fields:
+ *  - STAT_TYPE
+ *    Bits 7:0
+ *    Purpose: identifies the type of statistics info held in the
+ *        following information element
+ *    Value: ath12k_dbg_htt_ext_stats_type
+ *  - STATUS
+ *    Bits 10:8
+ *    Purpose: indicate whether the requested stats are present
+ *    Value:
+ *       0 -> The requested stats have been delivered in full
+ *       1 -> The requested stats have been delivered in part
+ *       2 -> The requested stats could not be delivered (error case)
+ *       3 -> The requested stat type is either not recognized (invalid)
+ *  - DONE
+ *    Bits 11
+ *    Purpose:
+ *        Indicates the completion of the stats entry, this will be the last
+ *        stats conf HTT segment for the requested stats type.
+ *    Value:
+ *        0 -> the stats retrieval is ongoing
+ *        1 -> the stats retrieval is complete
+ *  - LENGTH
+ *    Bits 31:16
+ *    Purpose: indicate the stats information size
+ *    Value: This field specifies the number of bytes of stats information
+ *       that follows the element tag-length header.
+ *       It is expected but not required that this length is a multiple of
+ *       4 bytes.
+ */
+
+#define ATH12K_HTT_T2H_EXT_STATS_INFO1_DONE		BIT(11)
+#define ATH12K_HTT_T2H_EXT_STATS_INFO1_LENGTH		GENMASK(31, 16)
+
+struct ath12k_htt_extd_stats_msg {
+	__le32 info0;
+	__le64 cookie;
+	__le32 info1;
+	u8 data[];
+} __packed;
+
 /* htt_dbg_ext_stats_type */
 enum ath12k_dbg_htt_ext_stats_type {
 	ATH12K_DBG_HTT_EXT_STATS_RESET		= 0,
+	ATH12K_DBG_HTT_EXT_STATS_PDEV_TX	= 1,
 
 	/* keep this last */
 	ATH12K_DBG_HTT_NUM_EXT_STATS,
 };
 
+enum ath12k_dbg_htt_tlv_tag {
+	HTT_STATS_TX_PDEV_CMN_TAG			= 0,
+	HTT_STATS_TX_PDEV_UNDERRUN_TAG			= 1,
+	HTT_STATS_TX_PDEV_SIFS_TAG			= 2,
+	HTT_STATS_TX_PDEV_FLUSH_TAG			= 3,
+
+	HTT_STATS_MAX_TAG,
+};
+
+#define ATH12K_HTT_STATS_MAC_ID				GENMASK(7, 0)
+
+#define ATH12K_HTT_TX_PDEV_MAX_SIFS_BURST_STATS		9
+#define ATH12K_HTT_TX_PDEV_MAX_FLUSH_REASON_STATS	150
+
+enum ath12k_htt_tx_pdev_underrun_enum {
+	HTT_STATS_TX_PDEV_NO_DATA_UNDERRUN		= 0,
+	HTT_STATS_TX_PDEV_DATA_UNDERRUN_BETWEEN_MPDU	= 1,
+	HTT_STATS_TX_PDEV_DATA_UNDERRUN_WITHIN_MPDU	= 2,
+	HTT_TX_PDEV_MAX_URRN_STATS			= 3,
+};
+
 enum ath12k_htt_stats_reset_cfg_param_alloc_pos {
 	ATH12K_HTT_STATS_RESET_PARAM_CFG_32_BYTES = 1,
 	ATH12K_HTT_STATS_RESET_PARAM_CFG_64_BYTES,
@@ -47,4 +167,95 @@ struct debug_htt_stats_req {
 	u8 buf[];
 };
 
+struct ath12k_htt_tx_pdev_stats_cmn_tlv {
+	__le32 mac_id__word;
+	__le32 hw_queued;
+	__le32 hw_reaped;
+	__le32 underrun;
+	__le32 hw_paused;
+	__le32 hw_flush;
+	__le32 hw_filt;
+	__le32 tx_abort;
+	__le32 mpdu_requed;
+	__le32 tx_xretry;
+	__le32 data_rc;
+	__le32 mpdu_dropped_xretry;
+	__le32 illgl_rate_phy_err;
+	__le32 cont_xretry;
+	__le32 tx_timeout;
+	__le32 pdev_resets;
+	__le32 phy_underrun;
+	__le32 txop_ovf;
+	__le32 seq_posted;
+	__le32 seq_failed_queueing;
+	__le32 seq_completed;
+	__le32 seq_restarted;
+	__le32 mu_seq_posted;
+	__le32 seq_switch_hw_paused;
+	__le32 next_seq_posted_dsr;
+	__le32 seq_posted_isr;
+	__le32 seq_ctrl_cached;
+	__le32 mpdu_count_tqm;
+	__le32 msdu_count_tqm;
+	__le32 mpdu_removed_tqm;
+	__le32 msdu_removed_tqm;
+	__le32 mpdus_sw_flush;
+	__le32 mpdus_hw_filter;
+	__le32 mpdus_truncated;
+	__le32 mpdus_ack_failed;
+	__le32 mpdus_expired;
+	__le32 mpdus_seq_hw_retry;
+	__le32 ack_tlv_proc;
+	__le32 coex_abort_mpdu_cnt_valid;
+	__le32 coex_abort_mpdu_cnt;
+	__le32 num_total_ppdus_tried_ota;
+	__le32 num_data_ppdus_tried_ota;
+	__le32 local_ctrl_mgmt_enqued;
+	__le32 local_ctrl_mgmt_freed;
+	__le32 local_data_enqued;
+	__le32 local_data_freed;
+	__le32 mpdu_tried;
+	__le32 isr_wait_seq_posted;
+
+	__le32 tx_active_dur_us_low;
+	__le32 tx_active_dur_us_high;
+	__le32 remove_mpdus_max_retries;
+	__le32 comp_delivered;
+	__le32 ppdu_ok;
+	__le32 self_triggers;
+	__le32 tx_time_dur_data;
+	__le32 seq_qdepth_repost_stop;
+	__le32 mu_seq_min_msdu_repost_stop;
+	__le32 seq_min_msdu_repost_stop;
+	__le32 seq_txop_repost_stop;
+	__le32 next_seq_cancel;
+	__le32 fes_offsets_err_cnt;
+	__le32 num_mu_peer_blacklisted;
+	__le32 mu_ofdma_seq_posted;
+	__le32 ul_mumimo_seq_posted;
+	__le32 ul_ofdma_seq_posted;
+
+	__le32 thermal_suspend_cnt;
+	__le32 dfs_suspend_cnt;
+	__le32 tx_abort_suspend_cnt;
+	__le32 tgt_specific_opaque_txq_suspend_info;
+	__le32 last_suspend_reason;
+} __packed;
+
+struct ath12k_htt_tx_pdev_stats_urrn_tlv {
+	DECLARE_FLEX_ARRAY(__le32, urrn_stats);
+} __packed;
+
+struct ath12k_htt_tx_pdev_stats_flush_tlv {
+	DECLARE_FLEX_ARRAY(__le32, flush_errs);
+} __packed;
+
+struct ath12k_htt_tx_pdev_stats_phy_err_tlv {
+	DECLARE_FLEX_ARRAY(__le32, phy_errs);
+} __packed;
+
+struct ath12k_htt_tx_pdev_stats_sifs_tlv {
+	DECLARE_FLEX_ARRAY(__le32, sifs_status);
+} __packed;
+
 #endif

drivers/net/wireless/ath/ath12k/dp_rx.c

@@ -17,6 +17,7 @@
 #include "dp_tx.h"
 #include "peer.h"
 #include "dp_mon.h"
+#include "debugfs_htt_stats.h"
 
 #define ATH12K_DP_RX_FRAGMENT_TIMEOUT_MS (2 * HZ)
 
@@ -1268,7 +1269,7 @@ static int ath12k_htt_tlv_ppdu_stats_parse(struct ath12k_base *ab,
 	return 0;
 }
 
-static int ath12k_dp_htt_tlv_iter(struct ath12k_base *ab, const void *ptr, size_t len,
+int ath12k_dp_htt_tlv_iter(struct ath12k_base *ab, const void *ptr, size_t len,
 			   int (*iter)(struct ath12k_base *ar, u16 tag, u16 len,
 				       const void *ptr, void *data),
 			   void *data)
@@ -1741,6 +1742,7 @@ void ath12k_dp_htt_htc_t2h_msg_handler(struct ath12k_base *ab,
 		ath12k_htt_pull_ppdu_stats(ab, skb);
 		break;
 	case HTT_T2H_MSG_TYPE_EXT_STATS_CONF:
+		ath12k_debugfs_htt_ext_stats_handler(ab, skb);
 		break;
 	case HTT_T2H_MSG_TYPE_MLO_TIMESTAMP_OFFSET_IND:
 		ath12k_htt_mlo_offset_event_handler(ab, skb);

drivers/net/wireless/ath/ath12k/dp_rx.h

@@ -139,4 +139,8 @@ ath12k_dp_rx_h_find_peer(struct ath12k_base *ab, struct sk_buff *msdu);
 int ath12k_dp_rxdma_ring_sel_config_qcn9274(struct ath12k_base *ab);
 int ath12k_dp_rxdma_ring_sel_config_wcn7850(struct ath12k_base *ab);
 
+int ath12k_dp_htt_tlv_iter(struct ath12k_base *ab, const void *ptr, size_t len,
+			   int (*iter)(struct ath12k_base *ar, u16 tag, u16 len,
+				       const void *ptr, void *data),
+			   void *data);
 #endif /* ATH12K_DP_RX_H */