From patchwork Wed Aug 4 13:45:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 492056 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7AB9C432BE for ; Wed, 4 Aug 2021 13:45:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B119860EFF for ; Wed, 4 Aug 2021 13:45:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238343AbhHDNpd (ORCPT ); Wed, 4 Aug 2021 09:45:33 -0400 Received: from dispatch1-us1.ppe-hosted.com ([148.163.129.48]:46126 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238377AbhHDNp3 (ORCPT ); Wed, 4 Aug 2021 09:45:29 -0400 X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.7.65.203]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 0C7621C0063 for ; Wed, 4 Aug 2021 13:45:16 +0000 (UTC) Received: from mail3.candelatech.com (mail2.candelatech.com [208.74.158.173]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id D3C59AC0081 for ; Wed, 4 Aug 2021 13:45:15 +0000 (UTC) Received: from ben-dt4.candelatech.com (50-251-239-81-static.hfc.comcastbusiness.net [50.251.239.81]) by mail3.candelatech.com (Postfix) with ESMTP id 8042113C2BF; Wed, 4 Aug 2021 06:45:14 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com 8042113C2BF DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1628084714; bh=RAton14y63U+ntuHIOKbzovFxN0jg1Ly35MLeMSgqrY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gyi2M5iVK7oXrJaBSV8azxBPkafOLeiYMDai53T3+9ac72W06CgVtVmP244Kp4J4n seOrSJErlSzRnsjcA4T70kP5Snbf5A/jrEM7r85RFI9rwHnjC8i0zhz9AxnDHL0KWE ap2aM4p65LiuV73YbUlBDmb6ZrfDJ3DUHXOt6ibw= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ben Greear Subject: [PATCH v5 10/11] mt76: mt7915: report tx-retries Date: Wed, 4 Aug 2021 06:45:04 -0700 Message-Id: <20210804134505.3208-10-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210804134505.3208-1-greearb@candelatech.com> References: <20210804134505.3208-1-greearb@candelatech.com> MIME-Version: 1.0 X-MDID: 1628084716-zN2lTpIrzeXW Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ben Greear mac80211 stack will only report tx-status for skb claiming to be ampdu heads, so lie a bit in mt7915 and set the flag so that mac80211 will record status for each skb. mt7915 appears to report retry status on an individual per-skb manner, so that method above seems to work. Re-constitute the txinfo status rate info so that the rix and flags is also at least close to correct. No direct way to report HE rates that way, so mac80211 might could use some tweaking in the ieee80211_tx_status_ext to take both info and status->rate into account. Signed-off-by: Ben Greear --- .../net/wireless/mediatek/mt76/mt7915/init.c | 1 + .../net/wireless/mediatek/mt76/mt7915/mac.c | 93 ++++++++++++++++++- .../net/wireless/mediatek/mt76/mt7915/mac.h | 4 +- .../net/wireless/mediatek/mt76/mt7915/main.c | 8 ++ .../wireless/mediatek/mt76/mt7915/mt7915.h | 4 + drivers/net/wireless/mediatek/mt76/tx.c | 6 +- 6 files changed, 109 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c index a0d282771d77..9dc7a67dd76f 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c @@ -217,6 +217,7 @@ mt7915_init_wiphy(struct ieee80211_hw *hw) struct wiphy *wiphy = hw->wiphy; hw->queues = 4; + hw->max_report_rates = 1; hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; hw->netdev_features = NETIF_F_RXCSUM; diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 6dd86dbe3e08..7fc219c8f5e5 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -1258,17 +1258,22 @@ mt7915_txp_skb_unmap(struct mt76_dev *dev, struct mt76_txwi_cache *t) static void mt7915_txwi_free(struct mt7915_dev *dev, struct mt76_txwi_cache *t, - struct ieee80211_sta *sta, struct list_head *free_list) + struct ieee80211_sta *sta, struct list_head *free_list, + u32 tx_cnt, u32 tx_status, u32 ampdu) { struct mt76_dev *mdev = &dev->mt76; struct mt76_wcid *wcid; __le32 *txwi; u16 wcid_idx; + struct ieee80211_tx_info *info; + struct ieee80211_tx_rate *rate; mt7915_txp_skb_unmap(mdev, t); if (!t->skb) goto out; + rcu_read_lock(); /* protect wcid access */ + txwi = (__le32 *)mt76_get_txwi_ptr(mdev, t); if (sta) { wcid = (struct mt76_wcid *)sta->drv_priv; @@ -1278,6 +1283,75 @@ mt7915_txwi_free(struct mt7915_dev *dev, struct mt76_txwi_cache *t, mt7915_tx_check_aggr(sta, txwi); } else { wcid_idx = FIELD_GET(MT_TXD1_WLAN_IDX, le32_to_cpu(txwi[1])); + wcid = rcu_dereference(mdev->wcid[wcid_idx]); + } + + info = IEEE80211_SKB_CB(t->skb); + + /* Cannot clear all of info->status, we need the driver private + * status intact. + */ + info->status.is_valid_ack_signal = 0; + + rate = &info->status.rates[0]; + rate->idx = -1; /* will over-write below if we found wcid */ + info->status.rates[1].idx = -1; /* terminate rate list */ + + /* force TX_STAT_AMPDU to be set, or mac80211 will ignore status */ + if (ampdu || (info->flags & IEEE80211_TX_CTL_AMPDU)) { + info->flags |= IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_CTL_AMPDU; + info->status.ampdu_len = 1; + } + + /* update info status based on cached wcid rate info since + * txfree path doesn't give us a lot of info. + */ + if (wcid) { + struct mt7915_sta *msta = container_of(wcid, struct mt7915_sta, wcid); + struct mt7915_sta_stats *stats = &msta->stats; + + if (wcid->rate.flags & RATE_INFO_FLAGS_MCS) { + rate->flags |= IEEE80211_TX_RC_MCS; + rate->idx = wcid->rate.mcs + wcid->rate.nss * 8; + } else if (wcid->rate.flags & RATE_INFO_FLAGS_VHT_MCS) { + rate->flags |= IEEE80211_TX_RC_VHT_MCS; + rate->idx = (wcid->rate.nss << 4) | wcid->rate.mcs; + } else if (wcid->rate.flags & RATE_INFO_FLAGS_HE_MCS) { + rate->idx = (wcid->rate.nss << 4) | wcid->rate.mcs; + } else { + rate->idx = wcid->rate.mcs; + } + + switch (wcid->rate.bw) { + case RATE_INFO_BW_160: + rate->flags |= IEEE80211_TX_RC_160_MHZ_WIDTH; + break; + case RATE_INFO_BW_80: + rate->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH; + break; + case RATE_INFO_BW_40: + rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; + break; + } + + stats->tx_mpdu_attempts += tx_cnt; + stats->tx_mpdu_retry += tx_cnt - 1; + + if (tx_status == 0) + stats->tx_mpdu_ok++; + else + stats->tx_mpdu_fail++; + } + + rcu_read_unlock(); + + /* Apply the values that this txfree path reports */ + rate->count = tx_cnt; + if (tx_status == 0) { + info->flags |= IEEE80211_TX_STAT_ACK; + info->status.ampdu_ack_len = 1; + } else { + info->flags &= ~IEEE80211_TX_STAT_ACK; } __mt76_tx_complete_skb(mdev, wcid_idx, t->skb, free_list); @@ -1297,7 +1371,8 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, struct sk_buff *skb) struct ieee80211_sta *sta = NULL; LIST_HEAD(free_list); struct sk_buff *tmp; - u8 i, count; + u8 i; + u16 count; bool wake = false; /* clean DMA queues and unmap buffers first */ @@ -1313,9 +1388,12 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, struct sk_buff *skb) * to the time ack is received or dropped by hw (air + hw queue time). * Should avoid accessing WTBL to get Tx airtime, and use it instead. */ + /* free->ctrl is high u16 of first DW in the txfree struct */ count = FIELD_GET(MT_TX_FREE_MSDU_CNT, le16_to_cpu(free->ctrl)); for (i = 0; i < count; i++) { - u32 msdu, info = le32_to_cpu(free->info[i]); + u32 msdu, tx_cnt, tx_status; + u32 info = le32_to_cpu(free->info[i]); /* DW3+ */ + u32 ampdu; /* * 1'b1: new wcid pair. @@ -1346,7 +1424,12 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, struct sk_buff *skb) if (!txwi) continue; - mt7915_txwi_free(dev, txwi, sta, &free_list); + tx_cnt = FIELD_GET(MT_TX_FREE_TXCNT, info); + /* 0 = success, 1 dropped-by-hw, 2 dropped-by-cpu */ + tx_status = FIELD_GET(MT_TX_FREE_STATUS, info); + ampdu = FIELD_GET(MT_TX_FREE_HEAD_OF_PAGE, info); + + mt7915_txwi_free(dev, txwi, sta, &free_list, tx_cnt, tx_status, ampdu); } mt7915_mac_sta_poll(dev); @@ -1873,7 +1956,7 @@ void mt7915_tx_token_put(struct mt7915_dev *dev) spin_lock_bh(&dev->mt76.token_lock); idr_for_each_entry(&dev->mt76.token, txwi, id) { - mt7915_txwi_free(dev, txwi, NULL, NULL); + mt7915_txwi_free(dev, txwi, NULL, NULL, 0, 1, 0); dev->mt76.token_count--; } spin_unlock_bh(&dev->mt76.token_lock); diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h index 3f5a80158866..c53eca81476f 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h @@ -299,7 +299,7 @@ struct mt7915_tx_free { __le16 ctrl; u8 txd_cnt; u8 rsv[3]; - __le32 info[]; + __le32 info[]; /* DW3+ */ } __packed __aligned(4); #define MT_TX_FREE_MSDU_CNT GENMASK(9, 0) @@ -311,6 +311,8 @@ struct mt7915_tx_free { /* when configured for txcount mode. See MT_PLE_HOST_RPT0_TX_LATENCY. */ #define MT_TX_FREE_TXCNT GENMASK(12, 0) #define MT_TX_FREE_STATUS GENMASK(14, 13) +/* 0: not MPDU, 1: MSDU is head pkt of TXD page (MPDU) */ +#define MT_TX_FREE_HEAD_OF_PAGE BIT(15) #define MT_TX_FREE_MSDU_ID GENMASK(30, 16) #define MT_TX_FREE_PAIR BIT(31) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c index 4a37c4dc49e4..ff945540c460 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c @@ -1093,6 +1093,10 @@ static const char mt7915_gstrings_stats[][ETH_GSTRING_LEN] = { "rx_ba_cnt", /* per vif counters */ + "v_tx_mpdu_attempts", /* counting any retries */ + "v_tx_mpdu_fail", /* frames that failed even after retry */ + "v_tx_mpdu_retry", /* number of times frames were retried */ + "v_tx_mpdu_ok", /* frames that succeeded, perhaps after retry */ "v_tx_mode_cck", "v_tx_mode_ofdm", "v_tx_mode_ht", @@ -1165,6 +1169,10 @@ static void mt7915_ethtool_worker(void *wi_data, struct ieee80211_sta *sta) wi->sta_count++; + data[ei++] += mstats->tx_mpdu_attempts; + data[ei++] += mstats->tx_mpdu_fail; + data[ei++] += mstats->tx_mpdu_retry; + data[ei++] += mstats->tx_mpdu_ok; data[ei++] += mstats->tx_mode[MT_PHY_TYPE_CCK]; data[ei++] += mstats->tx_mode[MT_PHY_TYPE_OFDM]; data[ei++] += mstats->tx_mode[MT_PHY_TYPE_HT]; diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h index ebbb92fd6620..3088ec1294e4 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h @@ -65,6 +65,10 @@ enum mt7915_rxq_id { }; struct mt7915_sta_stats { + unsigned long tx_mpdu_attempts; /* counting any retries */ + unsigned long tx_mpdu_fail; /* frames that failed even after retry */ + unsigned long tx_mpdu_ok; /* frames that succeeded, perhaps after retry */ + unsigned long tx_mpdu_retry; /* number of times frames were retried */ unsigned long tx_mode[MT_PHY_TYPE_HE_LAST]; /* See mt76_phy_type */ unsigned long tx_bw[4]; /* 20, 40, 80, 160 */ unsigned long tx_nss[4]; /* 1, 2, 3, 4 */ diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c index 4c8504d3c904..4918bf17bfe7 100644 --- a/drivers/net/wireless/mediatek/mt76/tx.c +++ b/drivers/net/wireless/mediatek/mt76/tx.c @@ -274,6 +274,7 @@ void __mt76_tx_complete_skb(struct mt76_dev *dev, u16 wcid_idx, struct sk_buff * struct ieee80211_tx_status status = { .skb = skb, .free_list = free_list, + .info = IEEE80211_SKB_CB(skb), }; struct mt76_wcid *wcid = NULL; struct ieee80211_hw *hw; @@ -281,8 +282,11 @@ void __mt76_tx_complete_skb(struct mt76_dev *dev, u16 wcid_idx, struct sk_buff * rcu_read_lock(); - if (wcid_idx < ARRAY_SIZE(dev->wcid)) + if (wcid_idx < ARRAY_SIZE(dev->wcid)) { wcid = rcu_dereference(dev->wcid[wcid_idx]); + if (wcid) + status.rate = &wcid->rate; + } mt76_tx_check_non_aql(dev, wcid, skb);