From e8123bb74c4ef05027e64124f214b8f01dd13352 Mon Sep 17 00:00:00 2001 From: Anilkumar Kolli Date: Tue, 5 Dec 2017 19:01:25 +0530 Subject: [PATCH] ath10k: add per peer tx stats support for 10.2.4 10.2.4 firmware branch (used in QCA988X) does not support HTT_10_4_T2H_MSG_TYPE_PEER_STATS and that's why ath10k does not provide tranmission rate statistics to user space, instead it just shows hardcoded 6 Mbit/s. But pktlog firmware facility provides per peer tx statistics. The firmware sends one pktlog event for every four PPDUs per peer, which include: * successful number of packets and bytes transmitted * number of packets and bytes dropped * retried number of packets and bytes * rate info per ppdu Firmware supports WMI_SERVICE_PEER_STATS, pktlog is enabled through ATH10K_FLAG_PEER_STATS, which is nowadays enabled by default in ath10k. This patch does not impact throughput. Tested on QCA9880 with firmware version 10.2.4.70.48. This should also work with firmware branch 10.2.4-1.0-00029 Parse peer stats from pktlog packets and update the tx rate information per STA. This way user space can query about transmit rate with iw: $iw wlan0 station dump Station 3c:a9:f4:72:bb:a4 (on wlan1) inactive time: 8210 ms rx bytes: 9166 rx packets: 44 tx bytes: 1105 tx packets: 9 tx retries: 0 tx failed: 1 rx drop misc: 3 signal: -75 [-75, -87, -88] dBm signal avg: -75 [-75, -85, -88] dBm tx bitrate: 39.0 MBit/s MCS 10 rx bitrate: 26.0 MBit/s MCS 3 rx duration: 23250 us authorized: yes authenticated: yes associated: yes preamble: short WMM/WME: yes MFP: no TDLS peer: no DTIM period: 2 beacon interval:100 short preamble: yes short slot time:yes connected time: 22 seconds Signed-off-by: Anilkumar Kolli Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/debug.h | 18 ++++++- drivers/net/wireless/ath/ath10k/htt.h | 17 +++++++ drivers/net/wireless/ath/ath10k/htt_rx.c | 60 ++++++++++++++++++++++++ drivers/net/wireless/ath/ath10k/mac.c | 10 ++++ 4 files changed, 104 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/debug.h b/drivers/net/wireless/ath/ath10k/debug.h index dd82a61ed1c8..5e662994c49a 100644 --- a/drivers/net/wireless/ath/ath10k/debug.h +++ b/drivers/net/wireless/ath/ath10k/debug.h @@ -51,7 +51,8 @@ enum ath10k_pktlog_filter { ATH10K_PKTLOG_RCFIND = 0x000000004, ATH10K_PKTLOG_RCUPDATE = 0x000000008, ATH10K_PKTLOG_DBG_PRINT = 0x000000010, - ATH10K_PKTLOG_ANY = 0x00000001f, + ATH10K_PKTLOG_PEER_STATS = 0x000000040, + ATH10K_PKTLOG_ANY = 0x00000005f, }; enum ath10k_dbg_aggr_mode { @@ -60,6 +61,21 @@ enum ath10k_dbg_aggr_mode { ATH10K_DBG_AGGR_MODE_MAX, }; +/* Types of packet log events */ +enum ath_pktlog_type { + ATH_PKTLOG_TYPE_TX_CTRL = 1, + ATH_PKTLOG_TYPE_TX_STAT, +}; + +struct ath10k_pktlog_hdr { + __le16 flags; + __le16 missed_cnt; + __le16 log_type; /* Type of log information foll this header */ + __le16 size; /* Size of variable length log information in bytes */ + __le32 timestamp; + u8 payload[0]; +} __packed; + /* FIXME: How to calculate the buffer size sanely? */ #define ATH10K_FW_STATS_BUF_SIZE (1024 * 1024) diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h index 7d6143523634..7bd93d627f6b 100644 --- a/drivers/net/wireless/ath/ath10k/htt.h +++ b/drivers/net/wireless/ath/ath10k/htt.h @@ -1497,6 +1497,23 @@ struct htt_peer_tx_stats { u8 payload[0]; } __packed; +#define ATH10K_10_2_TX_STATS_OFFSET 136 +#define PEER_STATS_FOR_NO_OF_PPDUS 4 + +struct ath10k_10_2_peer_tx_stats { + u8 ratecode[PEER_STATS_FOR_NO_OF_PPDUS]; + u8 success_pkts[PEER_STATS_FOR_NO_OF_PPDUS]; + __le16 success_bytes[PEER_STATS_FOR_NO_OF_PPDUS]; + u8 retry_pkts[PEER_STATS_FOR_NO_OF_PPDUS]; + __le16 retry_bytes[PEER_STATS_FOR_NO_OF_PPDUS]; + u8 failed_pkts[PEER_STATS_FOR_NO_OF_PPDUS]; + __le16 failed_bytes[PEER_STATS_FOR_NO_OF_PPDUS]; + u8 flags[PEER_STATS_FOR_NO_OF_PPDUS]; + __le32 tx_duration; + u8 tx_ppdu_cnt; + u8 peer_id; +} __packed; + union htt_rx_pn_t { /* WEP: 24-bit PN */ u32 pn24; diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 07f7960ab70c..620ed7dca836 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -2453,6 +2453,62 @@ out: rcu_read_unlock(); } +static void ath10k_fetch_10_2_tx_stats(struct ath10k *ar, u8 *data) +{ + struct ath10k_pktlog_hdr *hdr = (struct ath10k_pktlog_hdr *)data; + struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats; + struct ath10k_10_2_peer_tx_stats *tx_stats; + struct ieee80211_sta *sta; + struct ath10k_peer *peer; + u16 log_type = __le16_to_cpu(hdr->log_type); + u32 peer_id = 0, i; + + if (log_type != ATH_PKTLOG_TYPE_TX_STAT) + return; + + tx_stats = (struct ath10k_10_2_peer_tx_stats *)((hdr->payload) + + ATH10K_10_2_TX_STATS_OFFSET); + + if (!tx_stats->tx_ppdu_cnt) + return; + + peer_id = tx_stats->peer_id; + + rcu_read_lock(); + spin_lock_bh(&ar->data_lock); + peer = ath10k_peer_find_by_id(ar, peer_id); + if (!peer) { + ath10k_warn(ar, "Invalid peer id %d in peer stats buffer\n", + peer_id); + goto out; + } + + sta = peer->sta; + for (i = 0; i < tx_stats->tx_ppdu_cnt; i++) { + p_tx_stats->succ_bytes = + __le16_to_cpu(tx_stats->success_bytes[i]); + p_tx_stats->retry_bytes = + __le16_to_cpu(tx_stats->retry_bytes[i]); + p_tx_stats->failed_bytes = + __le16_to_cpu(tx_stats->failed_bytes[i]); + p_tx_stats->ratecode = tx_stats->ratecode[i]; + p_tx_stats->flags = tx_stats->flags[i]; + p_tx_stats->succ_pkts = tx_stats->success_pkts[i]; + p_tx_stats->retry_pkts = tx_stats->retry_pkts[i]; + p_tx_stats->failed_pkts = tx_stats->failed_pkts[i]; + + ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats); + } + spin_unlock_bh(&ar->data_lock); + rcu_read_unlock(); + + return; + +out: + spin_unlock_bh(&ar->data_lock); + rcu_read_unlock(); +} + bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) { struct ath10k_htt *htt = &ar->htt; @@ -2570,6 +2626,10 @@ bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) skb->len - offsetof(struct htt_resp, pktlog_msg.payload)); + + if (ath10k_peer_stats_enabled(ar)) + ath10k_fetch_10_2_tx_stats(ar, + resp->pktlog_msg.payload); break; } case HTT_T2H_MSG_TYPE_RX_FLUSH: { diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 18b9b374f4f6..ef2ed409ad4f 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -7546,6 +7546,16 @@ ath10k_mac_op_assign_vif_chanctx(struct ieee80211_hw *hw, arvif->vdev_id, ret); } + if (ath10k_peer_stats_enabled(ar)) { + ar->pktlog_filter |= ATH10K_PKTLOG_PEER_STATS; + ret = ath10k_wmi_pdev_pktlog_enable(ar, + ar->pktlog_filter); + if (ret) { + ath10k_warn(ar, "failed to enable pktlog %d\n", ret); + goto err_stop; + } + } + mutex_unlock(&ar->conf_mutex); return 0;