[PATCHv3,1/2] ath10k: add per peer htt tx stats support for 10.4

Message ID	1479227849-10042-1-git-send-email-akolli@qti.qualcomm.com (mailing list archive)
State	Not Applicable
Delegated to:	Kalle Valo
Headers	show Return-Path: <linux-wireless-owner@kernel.org> From: <akolli@qti.qualcomm.com> To: <ath10k@lists.infradead.org> CC: <akolli@codeaurora.org>, <linux-wireless@vger.kernel.org>, Anilkumar Kolli <akolli@qti.qualcomm.com> Subject: [PATCHv3 1/2] ath10k: add per peer htt tx stats support for 10.4 Date: Tue, 15 Nov 2016 22:07:29 +0530 Message-ID: <1479227849-10042-1-git-send-email-akolli@qti.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk

diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index e8decfaba5b6..2f324a115b18 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -337,6 +337,7 @@ struct ath10k_sta { u32 nss; u32 smps; u16 peer_id; + struct rate_info txrate; struct work_struct update_wk; @@ -693,6 +694,21 @@ struct ath10k_fw_components { struct ath10k_fw_file fw_file; }; +struct ath10k_per_peer_tx_stats { + u32 succ_bytes; + u32 retry_bytes; + u32 failed_bytes; + u8 ratecode; + u8 flags; + u16 peer_id; + u16 succ_pkts; + u16 retry_pkts; + u16 failed_pkts; + u16 duration; + u32 reserved1; + u32 reserved2; +}; + struct ath10k { struct ath_common ath_common; struct ieee80211_hw *hw; @@ -906,6 +922,7 @@ struct ath10k { struct ath10k_thermal thermal; struct ath10k_wow wow; + struct ath10k_per_peer_tx_stats peer_tx_stats; /* NAPI */ struct net_device napi_dev; diff --git a/drivers/net/wireless/ath/ath10k/htt.c b/drivers/net/wireless/ath/ath10k/htt.c index 130cd9502021..cd160b16db1e 100644 --- a/drivers/net/wireless/ath/ath10k/htt.c +++ b/drivers/net/wireless/ath/ath10k/htt.c @@ -137,6 +137,8 @@ HTT_T2H_MSG_TYPE_STATS_NOUPLOAD, [HTT_10_4_T2H_MSG_TYPE_TX_MODE_SWITCH_IND] = HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND, + [HTT_10_4_T2H_MSG_TYPE_PEER_STATS] = + HTT_T2H_MSG_TYPE_PEER_STATS, }; int ath10k_htt_connect(struct ath10k_htt *htt) diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h index 0d2ed09f202b..164eb3a10566 100644 --- a/drivers/net/wireless/ath/ath10k/htt.h +++ b/drivers/net/wireless/ath/ath10k/htt.h @@ -419,6 +419,7 @@ enum htt_10_4_t2h_msg_type { HTT_10_4_T2H_MSG_TYPE_STATS_NOUPLOAD = 0x18, /* 0x19 to 0x2f are reserved */ HTT_10_4_T2H_MSG_TYPE_TX_MODE_SWITCH_IND = 0x30, + HTT_10_4_T2H_MSG_TYPE_PEER_STATS = 0x31, /* keep this last */ HTT_10_4_T2H_NUM_MSGS }; @@ -453,6 +454,7 @@ enum htt_t2h_msg_type { HTT_T2H_MSG_TYPE_TX_FETCH_IND, HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM, HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND, + HTT_T2H_MSG_TYPE_PEER_STATS, /* keep this last */ HTT_T2H_NUM_MSGS }; @@ -1470,6 +1472,28 @@ struct htt_channel_change { __le32 phymode; } __packed; +struct htt_per_peer_tx_stats_ind { + __le32 succ_bytes; + __le32 retry_bytes; + __le32 failed_bytes; + u8 ratecode; + u8 flags; + __le16 peer_id; + __le16 succ_pkts; + __le16 retry_pkts; + __le16 failed_pkts; + __le16 tx_duration; + __le32 reserved1; + __le32 reserved2; +} __packed; + +struct htt_peer_tx_stats { + u8 num_ppdu; + u8 ppdu_len; + u8 version; + u8 payload[0]; +} __packed; + union htt_rx_pn_t { /* WEP: 24-bit PN */ u32 pn24; @@ -1521,6 +1545,7 @@ struct htt_resp { struct htt_tx_fetch_confirm tx_fetch_confirm; struct htt_tx_mode_switch_ind tx_mode_switch_ind; struct htt_channel_change chan_change; + struct htt_peer_tx_stats peer_tx_stats; }; } __packed; diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 285b235268d7..86d082cf4eef 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -2194,6 +2194,128 @@ void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) dev_kfree_skb_any(skb); } +static inline bool is_valid_legacy_rate(u8 rate) +{ + static const u8 legacy_rates[] = {1, 2, 5, 11, 6, 9, 12, + 18, 24, 36, 48, 54}; + int i; + + for (i = 0; i < ARRAY_SIZE(legacy_rates); i++) { + if (rate == legacy_rates[i]) + return true; + } + + return false; +} + +static void +ath10k_update_per_peer_tx_stats(struct ath10k *ar, + struct ieee80211_sta *sta, + struct ath10k_per_peer_tx_stats *peer_stats) +{ + struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv; + u8 rate = 0, sgi; + struct rate_info txrate; + + lockdep_assert_held(&ar->data_lock); + + txrate.flags = ATH10K_HW_PREAMBLE(peer_stats->ratecode); + txrate.bw = ATH10K_HW_BW(peer_stats->flags); + txrate.nss = ATH10K_HW_NSS(peer_stats->ratecode); + txrate.mcs = ATH10K_HW_MCS_RATE(peer_stats->ratecode); + sgi = ATH10K_HW_GI(peer_stats->flags); + + if (((txrate.flags == WMI_RATE_PREAMBLE_HT) || + (txrate.flags == WMI_RATE_PREAMBLE_VHT)) && txrate.mcs > 9) { + ath10k_warn(ar, "Invalid mcs %hhd peer stats", txrate.mcs); + return; + } + + if (txrate.flags == WMI_RATE_PREAMBLE_CCK || + txrate.flags == WMI_RATE_PREAMBLE_OFDM) { + rate = ATH10K_HW_LEGACY_RATE(peer_stats->ratecode); + + if (!is_valid_legacy_rate(rate)) { + ath10k_warn(ar, "Invalid legacy rate %hhd peer stats", + rate); + return; + } + + /* This is hacky, FW sends CCK rate 5.5Mbps as 6 */ + rate *= 10; + if (rate == 60 && txrate.flags == WMI_RATE_PREAMBLE_CCK) + rate = rate - 5; + arsta->txrate.legacy = rate * 10; + } else if (txrate.flags == WMI_RATE_PREAMBLE_HT) { + arsta->txrate.flags = RATE_INFO_FLAGS_MCS; + arsta->txrate.mcs = txrate.mcs; + } else { + arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS; + arsta->txrate.mcs = txrate.mcs; + } + + if (sgi) + arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; + + arsta->txrate.nss = txrate.nss; + arsta->txrate.bw = txrate.bw + RATE_INFO_BW_20; +} + +static void ath10k_htt_fetch_peer_stats(struct ath10k *ar, + struct sk_buff *skb) +{ + struct htt_resp *resp = (struct htt_resp *)skb->data; + struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats; + struct htt_per_peer_tx_stats_ind *tx_stats; + struct ieee80211_sta *sta; + struct ath10k_peer *peer; + int peer_id, i; + u8 ppdu_len, num_ppdu; + + num_ppdu = resp->peer_tx_stats.num_ppdu; + ppdu_len = resp->peer_tx_stats.ppdu_len * sizeof(__le32); + + if (skb->len < sizeof(struct htt_resp_hdr) + num_ppdu * ppdu_len) { + ath10k_warn(ar, "Invalid peer stats buf length %d\n", skb->len); + return; + } + + tx_stats = (struct htt_per_peer_tx_stats_ind *) + (resp->peer_tx_stats.payload); + peer_id = __le16_to_cpu(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 peer stats buffer\n", + peer_id); + goto out; + } + + sta = peer->sta; + for (i = 0; i < num_ppdu; i++) { + tx_stats = (struct htt_per_peer_tx_stats_ind *) + (resp->peer_tx_stats.payload + i * ppdu_len); + + p_tx_stats->succ_bytes = __le32_to_cpu(tx_stats->succ_bytes); + p_tx_stats->retry_bytes = __le32_to_cpu(tx_stats->retry_bytes); + p_tx_stats->failed_bytes = + __le32_to_cpu(tx_stats->failed_bytes); + p_tx_stats->ratecode = tx_stats->ratecode; + p_tx_stats->flags = tx_stats->flags; + p_tx_stats->succ_pkts = __le16_to_cpu(tx_stats->succ_pkts); + p_tx_stats->retry_pkts = __le16_to_cpu(tx_stats->retry_pkts); + p_tx_stats->failed_pkts = __le16_to_cpu(tx_stats->failed_pkts); + + ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats); + } + +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; @@ -2354,6 +2476,9 @@ bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) case HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND: ath10k_htt_rx_tx_mode_switch_ind(ar, skb); break; + case HTT_T2H_MSG_TYPE_PEER_STATS: + ath10k_htt_fetch_peer_stats(ar, skb); + break; case HTT_T2H_MSG_TYPE_EN_STATS: default: ath10k_warn(ar, "htt event (%d) not handled\n", diff --git a/drivers/net/wireless/ath/ath10k/wmi.h b/drivers/net/wireless/ath/ath10k/wmi.h index 1b243c899bef..e108d49998c3 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.h +++ b/drivers/net/wireless/ath/ath10k/wmi.h @@ -4603,9 +4603,17 @@ enum wmi_rate_preamble { #define ATH10K_HW_NSS(rate) (1 + (((rate) >> 4) & 0x3)) #define ATH10K_HW_PREAMBLE(rate) (((rate) >> 6) & 0x3) -#define ATH10K_HW_RATECODE(rate, nss, preamble) \ +#define ATH10K_HW_MCS_RATE(rate) ((rate) & 0xf) +#define ATH10K_HW_LEGACY_RATE(rate) ((rate) & 0x3f) +#define ATH10K_HW_BW(flags) (((flags) >> 3) & 0x3) +#define ATH10K_HW_GI(flags) (((flags) >> 5) & 0x1) +#define ATH10K_HW_RATECODE(rate, nss, preamble) \ (((preamble) << 6) | ((nss) << 4) | (rate)) +#define VHT_MCS_NUM 10 +#define VHT_BW_NUM 4 +#define VHT_NSS_NUM 4 + /* Value to disable fixed rate setting */ #define WMI_FIXED_RATE_NONE (0xff)

[PATCHv3,1/2] ath10k: add per peer htt tx stats support for 10.4

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