wifi: ath12k: Support AST Entry Stats

Add support to request Address Search Table(AST) entries stats
from firmware through HTT stats type 41. These stats give AST entries
related information such as software peer id, MAC address, pdev id,
vdev, id, next hop, etc.

Sample output:
-------------
echo 41 > /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_AST_ENTRY_TLV:
ast_index = 10
mac_addr = 00:00:00:01:00:00
sw_peer_id = 0
pdev_id = 3
vdev_id = 255
next_hop = 0
mcast = 0
monitor_direct = 0
mesh_sta = 0
mec = 0
intra_bss = 0

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4

Signed-off-by: Roopni Devanathan <[email protected]>
Acked-by: Kalle Valo <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jeff Johnson <[email protected]>

Author: Roopni Devanathan

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

@@ -3469,6 +3469,59 @@ ath12k_htt_print_tx_per_rate_stats_tlv(const void *tag_buf, u16 tag_len,
 	stats_req->buf_len = len;
 }
 
+static void
+ath12k_htt_print_ast_entry_tlv(const void *tag_buf, u16 tag_len,
+			       struct debug_htt_stats_req *stats_req)
+{
+	const struct ath12k_htt_ast_entry_tlv *htt_stats_buf = tag_buf;
+	u32 buf_len = ATH12K_HTT_STATS_BUF_SIZE;
+	u32 len = stats_req->buf_len;
+	u8 *buf = stats_req->buf;
+	u32 mac_addr_l32;
+	u32 mac_addr_h16;
+	u32 ast_info;
+
+	if (tag_len < sizeof(*htt_stats_buf))
+		return;
+
+	mac_addr_l32 = le32_to_cpu(htt_stats_buf->mac_addr.mac_addr_l32);
+	mac_addr_h16 = le32_to_cpu(htt_stats_buf->mac_addr.mac_addr_h16);
+	ast_info = le32_to_cpu(htt_stats_buf->info);
+
+	len += scnprintf(buf + len, buf_len - len, "HTT_AST_ENTRY_TLV:\n");
+	len += scnprintf(buf + len, buf_len - len, "ast_index = %u\n",
+			 le32_to_cpu(htt_stats_buf->ast_index));
+	len += scnprintf(buf + len, buf_len - len,
+			 "mac_addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
+			 u32_get_bits(mac_addr_l32, ATH12K_HTT_MAC_ADDR_L32_0),
+			 u32_get_bits(mac_addr_l32, ATH12K_HTT_MAC_ADDR_L32_1),
+			 u32_get_bits(mac_addr_l32, ATH12K_HTT_MAC_ADDR_L32_2),
+			 u32_get_bits(mac_addr_l32, ATH12K_HTT_MAC_ADDR_L32_3),
+			 u32_get_bits(mac_addr_h16, ATH12K_HTT_MAC_ADDR_H16_0),
+			 u32_get_bits(mac_addr_h16, ATH12K_HTT_MAC_ADDR_H16_1));
+
+	len += scnprintf(buf + len, buf_len - len, "sw_peer_id = %u\n",
+			 le32_to_cpu(htt_stats_buf->sw_peer_id));
+	len += scnprintf(buf + len, buf_len - len, "pdev_id = %u\n",
+			 u32_get_bits(ast_info, ATH12K_HTT_AST_PDEV_ID_INFO));
+	len += scnprintf(buf + len, buf_len - len, "vdev_id = %u\n",
+			 u32_get_bits(ast_info, ATH12K_HTT_AST_VDEV_ID_INFO));
+	len += scnprintf(buf + len, buf_len - len, "next_hop = %u\n",
+			 u32_get_bits(ast_info, ATH12K_HTT_AST_NEXT_HOP_INFO));
+	len += scnprintf(buf + len, buf_len - len, "mcast = %u\n",
+			 u32_get_bits(ast_info, ATH12K_HTT_AST_MCAST_INFO));
+	len += scnprintf(buf + len, buf_len - len, "monitor_direct = %u\n",
+			 u32_get_bits(ast_info, ATH12K_HTT_AST_MONITOR_DIRECT_INFO));
+	len += scnprintf(buf + len, buf_len - len, "mesh_sta = %u\n",
+			 u32_get_bits(ast_info, ATH12K_HTT_AST_MESH_STA_INFO));
+	len += scnprintf(buf + len, buf_len - len, "mec = %u\n",
+			 u32_get_bits(ast_info, ATH12K_HTT_AST_MEC_INFO));
+	len += scnprintf(buf + len, buf_len - len, "intra_bss = %u\n\n",
+			 u32_get_bits(ast_info, ATH12K_HTT_AST_INTRA_BSS_INFO));
+
+	stats_req->buf_len = len;
+}
+
 static void
 ath12k_htt_print_dmac_reset_stats_tlv(const void *tag_buf, u16 tag_len,
 				      struct debug_htt_stats_req *stats_req)
@@ -3877,6 +3930,9 @@ static int ath12k_dbg_htt_ext_stats_parse(struct ath12k_base *ab,
 	case HTT_STATS_PER_RATE_STATS_TAG:
 		ath12k_htt_print_tx_per_rate_stats_tlv(tag_buf, len, stats_req);
 		break;
+	case HTT_STATS_AST_ENTRY_TAG:
+		ath12k_htt_print_ast_entry_tlv(tag_buf, len, stats_req);
+		break;
 	case HTT_STATS_DMAC_RESET_STATS_TAG:
 		ath12k_htt_print_dmac_reset_stats_tlv(tag_buf, len, stats_req);
 		break;

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

@@ -141,6 +141,7 @@ enum ath12k_dbg_htt_ext_stats_type {
 	ATH12K_DBG_HTT_EXT_PHY_COUNTERS_AND_PHY_STATS	= 37,
 	ATH12K_DBG_HTT_EXT_VDEVS_TXRX_STATS		= 38,
 	ATH12K_DBG_HTT_EXT_PDEV_PER_STATS		= 40,
+	ATH12K_DBG_HTT_EXT_AST_ENTRIES			= 41,
 	ATH12K_DBG_HTT_EXT_STATS_SOC_ERROR		= 45,
 	ATH12K_DBG_HTT_EXT_STATS_PDEV_SCHED_ALGO	= 49,
 	ATH12K_DBG_HTT_EXT_STATS_MANDATORY_MUOFDMA	= 51,
@@ -211,6 +212,7 @@ enum ath12k_dbg_htt_tlv_tag {
 	HTT_STATS_PER_RATE_STATS_TAG			= 128,
 	HTT_STATS_MU_PPDU_DIST_TAG			= 129,
 	HTT_STATS_TX_PDEV_MUMIMO_GRP_STATS_TAG		= 130,
+	HTT_STATS_AST_ENTRY_TAG				= 132,
 	HTT_STATS_TX_PDEV_RATE_STATS_BE_OFDMA_TAG	= 135,
 	HTT_STATS_TX_SELFGEN_BE_ERR_STATS_TAG		= 137,
 	HTT_STATS_TX_SELFGEN_BE_STATS_TAG		= 138,
@@ -1293,6 +1295,22 @@ struct ath12k_htt_t2h_soc_txrx_stats_common_tlv {
 	__le32 inv_peers_msdu_drop_count_lo;
 } __packed;
 
+#define ATH12K_HTT_AST_PDEV_ID_INFO		GENMASK(1, 0)
+#define ATH12K_HTT_AST_VDEV_ID_INFO		GENMASK(9, 2)
+#define ATH12K_HTT_AST_NEXT_HOP_INFO		BIT(10)
+#define ATH12K_HTT_AST_MCAST_INFO		BIT(11)
+#define ATH12K_HTT_AST_MONITOR_DIRECT_INFO	BIT(12)
+#define ATH12K_HTT_AST_MESH_STA_INFO		BIT(13)
+#define ATH12K_HTT_AST_MEC_INFO			BIT(14)
+#define ATH12K_HTT_AST_INTRA_BSS_INFO		BIT(15)
+
+struct ath12k_htt_ast_entry_tlv {
+	__le32 sw_peer_id;
+	__le32 ast_index;
+	struct htt_mac_addr mac_addr;
+	__le32 info;
+} __packed;
+
 struct ath12k_htt_dmac_reset_stats_tlv {
 	__le32 reset_count;
 	__le32 reset_time_lo_ms;

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

@@ -1798,6 +1798,18 @@ enum vdev_stats_offload_timer_duration {
 	ATH12K_STATS_TIMER_DUR_2SEC = 3,
 };
 
+#define ATH12K_HTT_MAC_ADDR_L32_0	GENMASK(7, 0)
+#define ATH12K_HTT_MAC_ADDR_L32_1	GENMASK(15, 8)
+#define ATH12K_HTT_MAC_ADDR_L32_2	GENMASK(23, 16)
+#define ATH12K_HTT_MAC_ADDR_L32_3	GENMASK(31, 24)
+#define ATH12K_HTT_MAC_ADDR_H16_0	GENMASK(7, 0)
+#define ATH12K_HTT_MAC_ADDR_H16_1	GENMASK(15, 8)
+
+struct htt_mac_addr {
+	__le32 mac_addr_l32;
+	__le32 mac_addr_h16;
+} __packed;
+
 static inline void ath12k_dp_get_mac_addr(u32 addr_l32, u16 addr_h16, u8 *addr)
 {
 	memcpy(addr, &addr_l32, 4);