From patchwork Tue Jul 20 18:22:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 481952 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 912B7C07E9B for ; Tue, 20 Jul 2021 18:24:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6F51B610A7 for ; Tue, 20 Jul 2021 18:24:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234958AbhGTRnL (ORCPT ); Tue, 20 Jul 2021 13:43:11 -0400 Received: from dispatch1-us1.ppe-hosted.com ([148.163.129.48]:46614 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234829AbhGTRm1 (ORCPT ); Tue, 20 Jul 2021 13:42:27 -0400 X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.7.65.202]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id B5F1E1C006B for ; Tue, 20 Jul 2021 18:23:00 +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 8978C8006A for ; Tue, 20 Jul 2021 18:23:00 +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 2428A13C2B1; Tue, 20 Jul 2021 11:23:00 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com 2428A13C2B1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1626805380; bh=FRzEELfX9dbi6EKcY1yfw8G0S4hB17SvvV6vNEWvl9k=; h=From:To:Cc:Subject:Date:From; b=CPCV3MPRPiZGyB11+cFZRhW/j+k2U3ETrV/ocmtuBZ62+ljno+S8ILh9USgJxVCKi wMxy1jslkvIj8uhO8BIAp68rNqdj+S1S6/ayE8vqvOYyUUVofUmrRfC4j8VnClSuNt n7e+9lEdfI5DMZl9/jDAooKTTao5PvmzQNjw8biU= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ben Greear Subject: [PATCH 01/11] mt76: add hash lookup for skb on TXS status_list. Date: Tue, 20 Jul 2021 11:22:45 -0700 Message-Id: <20210720182256.30536-1-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-MDID: 1626805381-vJ65-TQ7UtZj Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ben Greear This improves performance when sending lots of frames that are requesting being mapped to a TXS callback. Add comments to help next person understood the tx path better. Signed-off-by: Ben Greear --- drivers/net/wireless/mediatek/mt76/mt76.h | 43 +++++++--- .../net/wireless/mediatek/mt76/mt7603/mac.c | 2 +- .../net/wireless/mediatek/mt76/mt7615/mac.c | 2 +- .../net/wireless/mediatek/mt76/mt76x02_mac.c | 2 +- .../net/wireless/mediatek/mt76/mt7915/mac.c | 8 +- .../net/wireless/mediatek/mt76/mt7921/mac.c | 7 +- drivers/net/wireless/mediatek/mt76/tx.c | 79 ++++++++++++++++--- 7 files changed, 115 insertions(+), 28 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index 436bf2b8e2cd..7ac7d5dc30f8 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -235,6 +235,15 @@ DECLARE_EWMA(signal, 10, 8); #define MT_WCID_TX_INFO_TXPWR_ADJ GENMASK(25, 18) #define MT_WCID_TX_INFO_SET BIT(31) +#define MT_PACKET_ID_MASK GENMASK(6, 0) +#define MT_PACKET_ID_NO_ACK 0 +/* Request TXS, but don't try to match with skb. */ +#define MT_PACKET_ID_NO_SKB 1 +#define MT_PACKET_ID_FIRST 2 +#define MT_PACKET_ID_HAS_RATE BIT(7) +#define MT_PACKET_ID_MAX (GENMASK(7, 0) - 1) + + struct mt76_wcid { struct mt76_rx_tid __rcu *aggr[IEEE80211_NUM_TIDS]; @@ -246,6 +255,8 @@ struct mt76_wcid { struct rate_info rate; + struct sk_buff *skb_status_array[MT_PACKET_ID_MAX + 1] ; + u16 idx; u8 hw_key_idx; u8 hw_key_idx2; @@ -302,13 +313,8 @@ struct mt76_rx_tid { #define MT_TX_CB_TXS_DONE BIT(1) #define MT_TX_CB_TXS_FAILED BIT(2) -#define MT_PACKET_ID_MASK GENMASK(6, 0) -#define MT_PACKET_ID_NO_ACK 0 -#define MT_PACKET_ID_NO_SKB 1 -#define MT_PACKET_ID_FIRST 2 -#define MT_PACKET_ID_HAS_RATE BIT(7) - -#define MT_TX_STATUS_SKB_TIMEOUT HZ +/* This is timer for when to give up when waiting for TXS callback. */ +#define MT_TX_STATUS_SKB_TIMEOUT HZ / 8 struct mt76_tx_cb { unsigned long jiffies; @@ -651,6 +657,7 @@ struct mt76_dev { spinlock_t cc_lock; u32 cur_cc_bss_rx; + unsigned long next_status_jiffies; struct mt76_rx_status rx_ampdu_status; u32 rx_ampdu_len; @@ -1090,7 +1097,7 @@ struct sk_buff *mt76_tx_status_skb_get(struct mt76_dev *dev, struct mt76_wcid *wcid, int pktid, struct sk_buff_head *list); void mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb, - struct sk_buff_head *list); + struct sk_buff_head *list, struct mt76_wcid *wcid); void __mt76_tx_complete_skb(struct mt76_dev *dev, u16 wcid, struct sk_buff *skb, struct list_head *free_list); static inline void @@ -1297,13 +1304,27 @@ mt76_token_put(struct mt76_dev *dev, int token) } static inline int -mt76_get_next_pkt_id(struct mt76_wcid *wcid) +mt76_get_next_pkt_id(struct mt76_wcid *wcid, struct sk_buff *skb) { + struct sk_buff *qskb; + wcid->packet_id = (wcid->packet_id + 1) & MT_PACKET_ID_MASK; - if (wcid->packet_id == MT_PACKET_ID_NO_ACK || - wcid->packet_id == MT_PACKET_ID_NO_SKB) + if (wcid->packet_id < MT_PACKET_ID_FIRST) wcid->packet_id = MT_PACKET_ID_FIRST; + qskb = wcid->skb_status_array[wcid->packet_id]; + if (qskb) { + /* bummer, already waiting on this pid. See if it is stale. */ + struct mt76_tx_cb *cb = mt76_tx_skb_cb(qskb); + if (!time_after(jiffies, cb->jiffies + MT_TX_STATUS_SKB_TIMEOUT)) { + /* ok, not stale. Increment pid anyway, will try next slot next time */ + return MT_PACKET_ID_NO_SKB; + } + } + + /* cache this skb for fast lookup by packet-id */ + wcid->skb_status_array[wcid->packet_id] = skb; + return wcid->packet_id; } #endif diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/mac.c b/drivers/net/wireless/mediatek/mt76/mt7603/mac.c index 3972c56136a2..2f268eb7c1e6 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7603/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7603/mac.c @@ -1230,7 +1230,7 @@ mt7603_mac_add_txs_skb(struct mt7603_dev *dev, struct mt7603_sta *sta, int pid, info->status.rates[0].idx = -1; } - mt76_tx_status_skb_done(mdev, skb, &list); + mt76_tx_status_skb_done(mdev, skb, &list, &sta->wcid); } mt76_tx_status_unlock(mdev, &list); diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c index ff3f85e4087c..381a998817d4 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c @@ -1433,7 +1433,7 @@ static bool mt7615_mac_add_txs_skb(struct mt7615_dev *dev, info->status.rates[0].idx = -1; } - mt76_tx_status_skb_done(mdev, skb, &list); + mt76_tx_status_skb_done(mdev, skb, &list, &sta->wcid); } mt76_tx_status_unlock(mdev, &list); diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c index c32e6dc68773..fce020e64678 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c @@ -622,7 +622,7 @@ void mt76x02_send_tx_status(struct mt76x02_dev *dev, info = *status.info; len = status.skb->len; ac = skb_get_queue_mapping(status.skb); - mt76_tx_status_skb_done(mdev, status.skb, &list); + mt76_tx_status_skb_done(mdev, status.skb, &list, wcid); } else if (msta) { len = status.info->status.ampdu_len * ewma_pktlen_read(&msta->pktlen); ac = FIELD_GET(MT_PKTID_AC, cur_pktid); diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 736651c04814..9b3637c4cb12 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -1318,6 +1318,8 @@ mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, mt76_tx_status_lock(mdev, &list); skb = mt76_tx_status_skb_get(mdev, wcid, pid, &list); + + /* TODO: Gather stats anyway, even if we are not matching on an skb. */ if (!skb) goto out; @@ -1417,10 +1419,14 @@ mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, stats->tx_bw[0]++; break; } + + /* Cache rate for packets that don't get a TXS callback for some + * reason. + */ wcid->rate = rate; out: - mt76_tx_status_skb_done(mdev, skb, &list); + mt76_tx_status_skb_done(mdev, skb, &list, wcid); mt76_tx_status_unlock(mdev, &list); return !!skb; diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c index 76985a6b3be5..0d4356a1c3dc 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c @@ -732,7 +732,8 @@ mt7921_mac_write_txwi_80211(struct mt7921_dev *dev, __le32 *txwi, txwi[7] |= cpu_to_le32(val); } -static void mt7921_update_txs(struct mt76_wcid *wcid, __le32 *txwi) +static void mt7921_update_txs(struct mt76_wcid *wcid, __le32 *txwi, + struct sk_buff* skb) { struct mt7921_sta *msta = container_of(wcid, struct mt7921_sta, wcid); u32 pid, frame_type = FIELD_GET(MT_TXD2_FRAME_TYPE, txwi[2]); @@ -744,7 +745,7 @@ static void mt7921_update_txs(struct mt76_wcid *wcid, __le32 *txwi) return; msta->next_txs_ts = jiffies + msecs_to_jiffies(250); - pid = mt76_get_next_pkt_id(wcid); + pid = mt76_get_next_pkt_id(wcid, skb); txwi[5] |= cpu_to_le32(MT_TXD5_TX_STATUS_MCU | FIELD_PREP(MT_TXD5_PID, pid)); } @@ -839,7 +840,7 @@ void mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi, txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE); } - mt7921_update_txs(wcid, txwi); + mt7921_update_txs(wcid, txwi, skb); } static void diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c index 6f302acb6e69..971f6e2e0c80 100644 --- a/drivers/net/wireless/mediatek/mt76/tx.c +++ b/drivers/net/wireless/mediatek/mt76/tx.c @@ -36,6 +36,7 @@ mt76_tx_check_agg_ssn(struct ieee80211_sta *sta, struct sk_buff *skb) } EXPORT_SYMBOL_GPL(mt76_tx_check_agg_ssn); +/* Lock list, and initialize the timed-out-skb list object. */ void mt76_tx_status_lock(struct mt76_dev *dev, struct sk_buff_head *list) __acquires(&dev->status_list.lock) @@ -45,6 +46,9 @@ mt76_tx_status_lock(struct mt76_dev *dev, struct sk_buff_head *list) } EXPORT_SYMBOL_GPL(mt76_tx_status_lock); +/* Unlock list, and use last-received status for any skbs that + * timed out getting TXS callback (they are on the list passed in + */ void mt76_tx_status_unlock(struct mt76_dev *dev, struct sk_buff_head *list) __releases(&dev->status_list.lock) @@ -80,7 +84,7 @@ EXPORT_SYMBOL_GPL(mt76_tx_status_unlock); static void __mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb, u8 flags, - struct sk_buff_head *list) + struct sk_buff_head *list, struct mt76_wcid *wcid) { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb); @@ -89,11 +93,20 @@ __mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb, u8 flags, flags |= cb->flags; cb->flags = flags; + /* Only process skb with TXS status has been received and also + * the txfree (DMA_DONE) callback has happened. + */ if ((flags & done) != done) return; __skb_unlink(skb, &dev->status_list); + /* Make sure we clear any cached skb. */ + if (wcid) { + if (!(WARN_ON_ONCE(cb->pktid >= ARRAY_SIZE(wcid->skb_status_array)))) + wcid->skb_status_array[cb->pktid] = NULL; + } + /* Tx status can be unreliable. if it fails, mark the frame as ACKed */ if (flags & MT_TX_CB_TXS_FAILED) { info->status.rates[0].count = 0; @@ -106,9 +119,9 @@ __mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb, u8 flags, void mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb, - struct sk_buff_head *list) + struct sk_buff_head *list, struct mt76_wcid *wcid) { - __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_TXS_DONE, list); + __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_TXS_DONE, list, wcid); } EXPORT_SYMBOL_GPL(mt76_tx_status_skb_done); @@ -119,6 +132,7 @@ mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid, struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb); int pid; + int qlen; if (!wcid) return MT_PACKET_ID_NO_ACK; @@ -130,15 +144,30 @@ mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid, IEEE80211_TX_CTL_RATE_CTRL_PROBE))) return MT_PACKET_ID_NO_SKB; + /* due to limited range of the pktid (7 bits), we can only + * have a limited number of outstanding frames. I think it is OK to + * check the length outside of a lock since it doesn't matter too much + * if we read wrong data here. + * The TX-status callbacks don't always return a callback for an SKB, + * so the status_list may contain some stale skbs. Those will be cleaned + * out periodically, see MT_TX_STATUS_SKB_TIMEOUT. + */ + + qlen = skb_queue_len(&dev->status_list); + if (qlen > 120) + return MT_PACKET_ID_NO_SKB; + spin_lock_bh(&dev->status_list.lock); memset(cb, 0, sizeof(*cb)); - pid = mt76_get_next_pkt_id(wcid); + pid = mt76_get_next_pkt_id(wcid, skb); cb->wcid = wcid->idx; cb->pktid = pid; cb->jiffies = jiffies; - __skb_queue_tail(&dev->status_list, skb); + if (cb->pktid != MT_PACKET_ID_NO_SKB) { + __skb_queue_tail(&dev->status_list, skb); + } spin_unlock_bh(&dev->status_list.lock); return pid; @@ -150,6 +179,32 @@ mt76_tx_status_skb_get(struct mt76_dev *dev, struct mt76_wcid *wcid, int pktid, struct sk_buff_head *list) { struct sk_buff *skb, *tmp; + struct sk_buff *rvskb = NULL; + + /* If pktid is < first-valid-id, then it is not something we requested + * TXS for, so we will not find SKB. Bail out early in that case, + * unless we need to walk due to stale-skb-reaper timeout. + */ + if (pktid < MT_PACKET_ID_FIRST) { + if (!time_after(jiffies, dev->next_status_jiffies)) + return NULL; + } + + if (wcid) { + if (WARN_ON_ONCE(pktid >= ARRAY_SIZE(wcid->skb_status_array))) { + pr_err("invalid pktid: %d status-array-size: %d\n", + pktid, (int)(ARRAY_SIZE(wcid->skb_status_array))); + pktid = 0; /* protect from potential fw bugs */ + } + + skb = wcid->skb_status_array[pktid]; + + /* Make sure we clear our cached skb. */ + wcid->skb_status_array[pktid] = NULL; + + if (skb && !time_after(jiffies, dev->next_status_jiffies)) + return skb; + } skb_queue_walk_safe(&dev->status_list, skb, tmp) { struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb); @@ -157,18 +212,22 @@ mt76_tx_status_skb_get(struct mt76_dev *dev, struct mt76_wcid *wcid, int pktid, if (wcid && cb->wcid != wcid->idx) continue; - if (cb->pktid == pktid) - return skb; + if (cb->pktid == pktid) { + /* Found our skb, but check for timeouts too */ + rvskb = skb; + continue; + } if (pktid >= 0 && !time_after(jiffies, cb->jiffies + MT_TX_STATUS_SKB_TIMEOUT)) continue; __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_TXS_FAILED | - MT_TX_CB_TXS_DONE, list); + MT_TX_CB_TXS_DONE, list, wcid); } + dev->next_status_jiffies = jiffies + MT_TX_STATUS_SKB_TIMEOUT + 1; - return NULL; + return rvskb; } EXPORT_SYMBOL_GPL(mt76_tx_status_skb_get); @@ -238,7 +297,7 @@ void __mt76_tx_complete_skb(struct mt76_dev *dev, u16 wcid_idx, struct sk_buff * } mt76_tx_status_lock(dev, &list); - __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_DMA_DONE, &list); + __mt76_tx_status_skb_done(dev, skb, MT_TX_CB_DMA_DONE, &list, wcid); mt76_tx_status_unlock(dev, &list); out: From patchwork Tue Jul 20 18:22:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 483700 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 941FCC07E95 for ; Tue, 20 Jul 2021 18:24:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 78FF660FF4 for ; Tue, 20 Jul 2021 18:24:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232555AbhGTRnh (ORCPT ); Tue, 20 Jul 2021 13:43:37 -0400 Received: from dispatch1-us1.ppe-hosted.com ([67.231.154.184]:49658 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234850AbhGTRmf (ORCPT ); Tue, 20 Jul 2021 13:42:35 -0400 X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.110.51.172]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id F1CE4A0075 for ; Tue, 20 Jul 2021 18:23:00 +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 C4C6114007E for ; Tue, 20 Jul 2021 18:23:00 +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 4F0C813C2B3; Tue, 20 Jul 2021 11:23:00 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com 4F0C813C2B3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1626805380; bh=WMYkJ3alIxDDY4APHAc4Y7K299HxyU/pxpWbGtRC3xg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g7D2Iis3UJt4CuPwC5sW5Thhy9+sPXhQAmfNapAEsUo8M3FkrRBtUlPJRg5rWTU9g H59s7J7A6Kxvmm9H7WEtqUMFx1qAcZqFOn4Xyx/SVd7GMrnWWkToM4lDeiUbwIJUIN oMve2kdy/VEGKCLNy0jG0++bxBgbRR1nAR3qp6Es= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ben Greear Subject: [PATCH 02/11] mt76 - mt7915: Fix potential NPE in TXS processing. Date: Tue, 20 Jul 2021 11:22:46 -0700 Message-Id: <20210720182256.30536-2-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210720182256.30536-1-greearb@candelatech.com> References: <20210720182256.30536-1-greearb@candelatech.com> MIME-Version: 1.0 X-MDID: 1626805381-y-D30EVUkUmc Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ben Greear If skb is null, then don't try to dereference it. Signed-off-by: Ben Greear --- drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 9b3637c4cb12..1f644c4f3686 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -1321,7 +1321,7 @@ mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, /* TODO: Gather stats anyway, even if we are not matching on an skb. */ if (!skb) - goto out; + goto out_no_skb; txs = le32_to_cpu(txs_data[0]); txs5 = le32_to_cpu(txs_data[5]); @@ -1427,6 +1427,8 @@ mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, out: mt76_tx_status_skb_done(mdev, skb, &list, wcid); + +out_no_skb: mt76_tx_status_unlock(mdev, &list); return !!skb; From patchwork Tue Jul 20 18:22:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 481948 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 02F26C636CA for ; Tue, 20 Jul 2021 18:27:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E1EBF610A0 for ; Tue, 20 Jul 2021 18:27:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233691AbhGTRqR (ORCPT ); Tue, 20 Jul 2021 13:46:17 -0400 Received: from dispatch1-us1.ppe-hosted.com ([67.231.154.183]:58204 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234864AbhGTRmi (ORCPT ); Tue, 20 Jul 2021 13:42:38 -0400 X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.110.48.6]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 3BE7CA0074 for ; Tue, 20 Jul 2021 18:23:01 +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 E8D39900086 for ; Tue, 20 Jul 2021 18:23:00 +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 7D12713C2B4; Tue, 20 Jul 2021 11:23:00 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com 7D12713C2B4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1626805380; bh=ka623cxXkdseAethMYgwElhWxgxYXr1PvpL8BeI4ha8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hX+adLLkKrndQjOUWp412GJCNCaNPaMJSDYfTl/z+LxdqXRArF7S1d4+U9jXbHfeX ncT4vjfgf9aIKBarf3XosSMTV+nnrZUZ/2g+DH+ACig04pahwj4MAV2cHd5o44YxKF vDqzd0JZKZMpjel9HALwFrDbFbfgvjpxyBCydaRs= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ben Greear Subject: [PATCH 03/11] mt76 - mt7915: Move TXS parsing to its own method. Date: Tue, 20 Jul 2021 11:22:47 -0700 Message-Id: <20210720182256.30536-3-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210720182256.30536-1-greearb@candelatech.com> References: <20210720182256.30536-1-greearb@candelatech.com> MIME-Version: 1.0 X-MDID: 1626805381-vi5210lMQTnC Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ben Greear This will allow us to also parse TXS when we have no skb on the status callback list in future patches. Explicitly cache short_gi and he_gi in wcid, don't try to store it in the wcid.rate object. Slightly less confusing and less fragile when TXS starts parsing lots of frames. Signed-off-by: Ben Greear --- drivers/net/wireless/mediatek/mt76/mt76.h | 5 + .../net/wireless/mediatek/mt76/mt7915/mac.c | 123 ++++++++++-------- 2 files changed, 75 insertions(+), 53 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index 7ac7d5dc30f8..c7c33d8f984a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -253,7 +253,12 @@ struct mt76_wcid { struct ewma_signal rssi; int inactive_count; + /* cached rate, updated from mac_sta_poll() and from TXS callback logic, in 7915 + * at least. + */ struct rate_info rate; + bool rate_short_gi; /* cached HT/VHT short_gi, from mac_sta_poll() */ + u8 rate_he_gi; /* cached HE GI, from mac_sta_poll() */ struct sk_buff *skb_status_array[MT_PACKET_ID_MAX + 1] ; diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 1f644c4f3686..0dcbe7403831 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -205,12 +205,18 @@ static void mt7915_mac_sta_poll(struct mt7915_dev *dev) u8 offs = 24 + 2 * bw; rate->he_gi = (val & (0x3 << offs)) >> offs; + msta->wcid.rate_he_gi = rate->he_gi; /* cache for later */ } else if (rate->flags & RATE_INFO_FLAGS_VHT_MCS) { - if (val & BIT(12 + bw)) + if (val & BIT(12 + bw)) { rate->flags |= RATE_INFO_FLAGS_SHORT_GI; - else + msta->wcid.rate_short_gi = 1; + } + else { rate->flags &= ~RATE_INFO_FLAGS_SHORT_GI; + msta->wcid.rate_short_gi = 0; + } } + /* TODO: Deal with HT_MCS */ } rcu_read_unlock(); @@ -1302,33 +1308,22 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, struct sk_buff *skb) } } -static bool -mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, - __le32 *txs_data, struct mt7915_sta_stats *stats) +static void +mt7915_mac_parse_txs(struct mt7915_dev *dev, struct mt76_wcid *wcid, + __le32 *txs_data, struct mt7915_sta_stats *stats, + struct rate_info *rate, + struct ieee80211_tx_info *info) { struct ieee80211_supported_band *sband; - struct mt76_dev *mdev = &dev->mt76; - struct mt76_phy *mphy; - struct ieee80211_tx_info *info; - struct sk_buff_head list; - struct rate_info rate = {}; - struct sk_buff *skb; - bool cck = false; + struct mt76_phy *mphy; u32 txrate, txs, txs5, txs6, txs7, mode; - - mt76_tx_status_lock(mdev, &list); - skb = mt76_tx_status_skb_get(mdev, wcid, pid, &list); - - /* TODO: Gather stats anyway, even if we are not matching on an skb. */ - if (!skb) - goto out_no_skb; + bool cck = false; txs = le32_to_cpu(txs_data[0]); txs5 = le32_to_cpu(txs_data[5]); txs6 = le32_to_cpu(txs_data[6]); txs7 = le32_to_cpu(txs_data[7]); - info = IEEE80211_SKB_CB(skb); if (!(txs & MT_TXS0_ACK_ERROR_MASK)) info->flags |= IEEE80211_TX_STAT_ACK; @@ -1344,11 +1339,11 @@ mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, txrate = FIELD_GET(MT_TXS0_TX_RATE, txs); - rate.mcs = FIELD_GET(MT_TX_RATE_IDX, txrate); - rate.nss = FIELD_GET(MT_TX_RATE_NSS, txrate) + 1; + rate->mcs = FIELD_GET(MT_TX_RATE_IDX, txrate); + rate->nss = FIELD_GET(MT_TX_RATE_NSS, txrate) + 1; - stats->tx_nss[rate.nss - 1]++; - stats->tx_mcs[rate.mcs]++; + stats->tx_nss[rate->nss - 1]++; + stats->tx_mcs[rate->mcs]++; mode = FIELD_GET(MT_TX_RATE_MODE, txrate); switch (mode) { @@ -1365,73 +1360,95 @@ mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, else sband = &mphy->sband_2g.sband; - rate.mcs = mt76_get_rate(mphy->dev, sband, rate.mcs, cck); - rate.legacy = sband->bitrates[rate.mcs].bitrate; + rate->mcs = mt76_get_rate(mphy->dev, sband, rate->mcs, cck); + rate->legacy = sband->bitrates[rate->mcs].bitrate; break; case MT_PHY_TYPE_HT: case MT_PHY_TYPE_HT_GF: - rate.mcs += (rate.nss - 1) * 8; - if (rate.mcs > 31) - goto out; + rate->mcs += (rate->nss - 1) * 8; + if (rate->mcs > 31) + break; - rate.flags = RATE_INFO_FLAGS_MCS; - if (wcid->rate.flags & RATE_INFO_FLAGS_SHORT_GI) - rate.flags |= RATE_INFO_FLAGS_SHORT_GI; + rate->flags = RATE_INFO_FLAGS_MCS; + if (wcid->rate_short_gi) + rate->flags |= RATE_INFO_FLAGS_SHORT_GI; break; case MT_PHY_TYPE_VHT: - if (rate.mcs > 9) - goto out; + if (rate->mcs > 9) + break; - rate.flags = RATE_INFO_FLAGS_VHT_MCS; + rate->flags = RATE_INFO_FLAGS_VHT_MCS; + if (wcid->rate_short_gi) + rate->flags |= RATE_INFO_FLAGS_SHORT_GI; break; case MT_PHY_TYPE_HE_SU: case MT_PHY_TYPE_HE_EXT_SU: case MT_PHY_TYPE_HE_TB: case MT_PHY_TYPE_HE_MU: - if (rate.mcs > 11) - goto out; + if (rate->mcs > 11) + break; - rate.he_gi = wcid->rate.he_gi; - rate.he_dcm = FIELD_GET(MT_TX_RATE_DCM, txrate); - rate.flags = RATE_INFO_FLAGS_HE_MCS; + rate->he_gi = wcid->rate_he_gi; + rate->he_dcm = FIELD_GET(MT_TX_RATE_DCM, txrate); + rate->flags = RATE_INFO_FLAGS_HE_MCS; break; default: - goto out; + WARN_ON_ONCE(true); + mode = 0; } stats->tx_mode[mode]++; switch (FIELD_GET(MT_TXS0_BW, txs)) { case IEEE80211_STA_RX_BW_160: - rate.bw = RATE_INFO_BW_160; + rate->bw = RATE_INFO_BW_160; stats->tx_bw[3]++; break; case IEEE80211_STA_RX_BW_80: - rate.bw = RATE_INFO_BW_80; + rate->bw = RATE_INFO_BW_80; stats->tx_bw[2]++; break; case IEEE80211_STA_RX_BW_40: - rate.bw = RATE_INFO_BW_40; + rate->bw = RATE_INFO_BW_40; stats->tx_bw[1]++; break; default: - rate.bw = RATE_INFO_BW_20; + rate->bw = RATE_INFO_BW_20; stats->tx_bw[0]++; break; } +} - /* Cache rate for packets that don't get a TXS callback for some - * reason. +static void +mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, + __le32 *txs_data, struct mt7915_sta_stats *stats) +{ + struct mt76_dev *mdev = &dev->mt76; + struct ieee80211_tx_info *info; + struct ieee80211_tx_info info_stack; + struct sk_buff_head list; + /* rate is cached in wcid->rate for skbs that do not request to be + * paired with TXS data. This is normal datapath. */ - wcid->rate = rate; + struct rate_info *rate = &wcid->rate; + struct sk_buff *skb; -out: - mt76_tx_status_skb_done(mdev, skb, &list, wcid); + mt76_tx_status_lock(mdev, &list); + skb = mt76_tx_status_skb_get(mdev, wcid, pid, &list); -out_no_skb: - mt76_tx_status_unlock(mdev, &list); + memset(rate, 0, sizeof(*rate)); - return !!skb; + if (skb) + info = IEEE80211_SKB_CB(skb); + else + info = &info_stack; + + mt7915_mac_parse_txs(dev, wcid, txs_data, stats, rate, info); + + if (skb) + mt76_tx_status_skb_done(mdev, skb, &list, wcid); + + mt76_tx_status_unlock(mdev, &list); } static void mt7915_mac_add_txs(struct mt7915_dev *dev, void *data) From patchwork Tue Jul 20 18:22:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 483696 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 6C504C07E95 for ; Tue, 20 Jul 2021 18:27:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 51CB7610A0 for ; Tue, 20 Jul 2021 18:27:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232712AbhGTRq2 (ORCPT ); Tue, 20 Jul 2021 13:46:28 -0400 Received: from dispatch1-us1.ppe-hosted.com ([148.163.129.49]:46630 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234863AbhGTRmi (ORCPT ); Tue, 20 Jul 2021 13:42:38 -0400 X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.7.64.31]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 28EA12006C for ; Tue, 20 Jul 2021 18:23:01 +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 03A04600079 for ; Tue, 20 Jul 2021 18:23:00 +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 A7B5913C2B5; Tue, 20 Jul 2021 11:23:00 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com A7B5913C2B5 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1626805380; bh=2UauqE3f7Cam0vwROvYDo6iV1RUP1TvRA8VFULOqqMQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fi6p/evSfYg3b4ui/cTKgeRT0z+kfiH+9AsAHAWYIt50XwcilotlKYBnkxLpB8UzO 8t2vKbVRcTcWAgadNGq02utrVqx4gQTGwndx7mWnmW4BfIh/5AJaBhzNyjw2JO+OYG JHopNvOW22+aLzPG0yNz9M3VUPSAJGlr9w3flzeQ= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ben Greear Subject: [PATCH 04/11] mt76 - mt7915: Allow processing TXS for 'NO_SKB' pkt-ids. Date: Tue, 20 Jul 2021 11:22:48 -0700 Message-Id: <20210720182256.30536-4-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210720182256.30536-1-greearb@candelatech.com> References: <20210720182256.30536-1-greearb@candelatech.com> MIME-Version: 1.0 X-MDID: 1626805381-CUsEQuSYUZAs Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ben Greear This will let us update stats and wcid.rate for every TXS callback we receive for a particular wcid. For now, the TXS is not requested for NO_SKB frames, however. That will be allowed in next patch. Signed-off-by: Ben Greear --- .../net/wireless/mediatek/mt76/mt7915/mac.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 0dcbe7403831..84be95c9b65a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -1048,6 +1048,7 @@ void mt7915_mac_write_txwi(struct mt7915_dev *dev, __le32 *txwi, txwi[4] = 0; val = FIELD_PREP(MT_TXD5_PID, pid); + /* NOTE: mt7916 does NOT request TXS for 'NO_SKB' frames by default. */ if (pid >= MT_PACKET_ID_FIRST) val |= MT_TXD5_TX_STATUS_HOST; txwi[5] = cpu_to_le32(val); @@ -1431,10 +1432,16 @@ mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, * paired with TXS data. This is normal datapath. */ struct rate_info *rate = &wcid->rate; - struct sk_buff *skb; + struct sk_buff *skb = NULL; + bool check_status; - mt76_tx_status_lock(mdev, &list); - skb = mt76_tx_status_skb_get(mdev, wcid, pid, &list); + check_status = ((pid >= MT_PACKET_ID_FIRST) || + time_after(jiffies, mdev->next_status_jiffies)); + + if (check_status) { + mt76_tx_status_lock(mdev, &list); + skb = mt76_tx_status_skb_get(mdev, wcid, pid, &list); + } memset(rate, 0, sizeof(*rate)); @@ -1448,7 +1455,8 @@ mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, if (skb) mt76_tx_status_skb_done(mdev, skb, &list, wcid); - mt76_tx_status_unlock(mdev, &list); + if (check_status) + mt76_tx_status_unlock(mdev, &list); } static void mt7915_mac_add_txs(struct mt7915_dev *dev, void *data) @@ -1470,7 +1478,7 @@ static void mt7915_mac_add_txs(struct mt7915_dev *dev, void *data) txs = le32_to_cpu(txs_data[3]); pid = FIELD_GET(MT_TXS3_PID, txs); - if (pid < MT_PACKET_ID_FIRST) + if (pid < MT_PACKET_ID_NO_SKB) return; if (wcidx >= MT7915_WTBL_SIZE) From patchwork Tue Jul 20 18:22:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 481947 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 CC1E8C07E95 for ; Tue, 20 Jul 2021 18:27:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AD771610A0 for ; Tue, 20 Jul 2021 18:27:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234246AbhGTRqj (ORCPT ); Tue, 20 Jul 2021 13:46:39 -0400 Received: from dispatch1-us1.ppe-hosted.com ([67.231.154.164]:58208 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234881AbhGTRmi (ORCPT ); Tue, 20 Jul 2021 13:42:38 -0400 X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.110.50.13]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 900441A006C for ; Tue, 20 Jul 2021 18:23:01 +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 5114744006B for ; Tue, 20 Jul 2021 18:23:01 +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 CA38A13C2B7; Tue, 20 Jul 2021 11:23:00 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com CA38A13C2B7 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1626805380; bh=sipM5SASaQUYXBu/FiB/jhDwhnT7a0nksqib4Nbv13c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cykvdQ0s/q/VaomHS7Iu3SnfINUWm3EEQHACyMpxi/1u0YGsyaFs13qaUn+khcqpv WkXhfGHRuWPNRggkapyjmCeF2ng4sERkR3zU+fcFu7GgrYDHDZ1uh0C6YgK3Uaiz7t BCJOfTW1BtZhWbiHnss91cFqYexKkqlvPsRg3KCw= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ben Greear Subject: [PATCH 05/11] mt76: mt7915: debugfs hook to enable TXS for NO_SKB pkt-ids. Date: Tue, 20 Jul 2021 11:22:49 -0700 Message-Id: <20210720182256.30536-5-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210720182256.30536-1-greearb@candelatech.com> References: <20210720182256.30536-1-greearb@candelatech.com> MIME-Version: 1.0 X-MDID: 1626805382-YXKjzAOiNPyM Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ben Greear This lets user turn on/off this feature. Enabling gives better tx-rate related stats, but will cause extra driver and (maybe) firmware work. Not sure if it actually affects performance or not. Signed-off-by: Ben Greear --- .../wireless/mediatek/mt76/mt7915/debugfs.c | 24 +++++++++++++++++++ .../net/wireless/mediatek/mt76/mt7915/mac.c | 4 ++-- .../wireless/mediatek/mt76/mt7915/mt7915.h | 5 ++++ 3 files changed, 31 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c index d98c6425108b..3c0c667430c5 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c @@ -109,6 +109,29 @@ mt7915_fw_debug_get(void *data, u64 *val) DEFINE_DEBUGFS_ATTRIBUTE(fops_fw_debug, mt7915_fw_debug_get, mt7915_fw_debug_set, "%lld\n"); +static int +mt7915_txs_for_no_skb_set(void *data, u64 val) +{ + struct mt7915_dev *dev = data; + + dev->txs_for_no_skb_enabled = !!val; + + return 0; +} + +static int +mt7915_txs_for_no_skb_get(void *data, u64 *val) +{ + struct mt7915_dev *dev = data; + + *val = dev->txs_for_no_skb_enabled; + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(fops_txs_for_no_skb, mt7915_txs_for_no_skb_get, + mt7915_txs_for_no_skb_set, "%lld\n"); + static void mt7915_ampdu_stat_read_phy(struct mt7915_phy *phy, struct seq_file *file) @@ -344,6 +367,7 @@ int mt7915_init_debugfs(struct mt7915_dev *dev) mt7915_queues_acq); debugfs_create_file("tx_stats", 0400, dir, dev, &mt7915_tx_stats_fops); debugfs_create_file("fw_debug", 0600, dir, dev, &fops_fw_debug); + debugfs_create_file("txs_for_no_skb", 0600, dir, dev, &fops_txs_for_no_skb); debugfs_create_file("implicit_txbf", 0600, dir, dev, &fops_implicit_txbf); debugfs_create_u32("dfs_hw_pattern", 0400, dir, &dev->hw_pattern); diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 84be95c9b65a..41247fe4ff8c 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -1048,8 +1048,8 @@ void mt7915_mac_write_txwi(struct mt7915_dev *dev, __le32 *txwi, txwi[4] = 0; val = FIELD_PREP(MT_TXD5_PID, pid); - /* NOTE: mt7916 does NOT request TXS for 'NO_SKB' frames by default. */ - if (pid >= MT_PACKET_ID_FIRST) + if ((pid >= MT_PACKET_ID_FIRST) || + ((pid == MT_PACKET_ID_NO_SKB) && dev->txs_for_no_skb_enabled)) val |= MT_TXD5_TX_STATUS_HOST; txwi[5] = cpu_to_le32(val); diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h index fcc5cd60cfc8..9e2d547d441c 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h @@ -226,6 +226,11 @@ struct mt7915_dev { u16 chainmask; u32 hif_idx; + /* Should we request TXS for MT_PACKET_ID_NO_SKB? Doing so gives better + * costs but causes a great deal more TXS packet processing by driver and + * creation by firmware, so may be a performance drag. + */ + bool txs_for_no_skb_enabled; struct work_struct init_work; struct work_struct rc_work; From patchwork Tue Jul 20 18:22:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 483699 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 162EFC636C9 for ; Tue, 20 Jul 2021 18:26:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EDE4F610CC for ; Tue, 20 Jul 2021 18:26:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233689AbhGTRpQ (ORCPT ); Tue, 20 Jul 2021 13:45:16 -0400 Received: from dispatch1-us1.ppe-hosted.com ([67.231.154.184]:58248 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234900AbhGTRmn (ORCPT ); Tue, 20 Jul 2021 13:42:43 -0400 X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.110.51.18]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id A30D91A006F for ; Tue, 20 Jul 2021 18:23:01 +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 6881F34006A for ; Tue, 20 Jul 2021 18:23:01 +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 EC74C13C2B8; Tue, 20 Jul 2021 11:23:00 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com EC74C13C2B8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1626805381; bh=eNdlRsYWV/WJ2w8j1JZPs7GMw4hHlll06Ygo1d2j37Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BZst0WdZkjp1LfW2Um+tKKjpOejjO2A5EfEs9eXPcpMTUttIbYrzWmaXNyj2+T/gh W+1NGY8ba8D/tiOtMzZk5wElbyDsB+QRAYjb046S1cnBmGyqLTlOyZrYmi+EXVvLQ+ V0EqE0gHQ6R7Tc7rAQ5eDFnz6S2Y7ACbJNexxpsI= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ben Greear Subject: [PATCH 06/11] mt76: mt7915: Support parsing TXSFM 0x2. Date: Tue, 20 Jul 2021 11:22:50 -0700 Message-Id: <20210720182256.30536-6-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210720182256.30536-1-greearb@candelatech.com> References: <20210720182256.30536-1-greearb@candelatech.com> MIME-Version: 1.0 X-MDID: 1626805382-0KkZvMCzHkCk Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ben Greear Add code to support this format, but I don't actually see any of these TXS format frames on my test system. Signed-off-by: Ben Greear --- .../net/wireless/mediatek/mt76/mt7915/mac.c | 24 +++++++++++-------- .../net/wireless/mediatek/mt76/mt7915/mac.h | 3 +++ 2 files changed, 17 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 41247fe4ff8c..80acc07c0180 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -1317,13 +1317,10 @@ mt7915_mac_parse_txs(struct mt7915_dev *dev, struct mt76_wcid *wcid, { struct ieee80211_supported_band *sband; struct mt76_phy *mphy; - u32 txrate, txs, txs5, txs6, txs7, mode; + u32 txrate, txs, mode; bool cck = false; txs = le32_to_cpu(txs_data[0]); - txs5 = le32_to_cpu(txs_data[5]); - txs6 = le32_to_cpu(txs_data[6]); - txs7 = le32_to_cpu(txs_data[7]); if (!(txs & MT_TXS0_ACK_ERROR_MASK)) info->flags |= IEEE80211_TX_STAT_ACK; @@ -1334,10 +1331,6 @@ mt7915_mac_parse_txs(struct mt7915_dev *dev, struct mt76_wcid *wcid, info->status.rates[0].idx = -1; - stats->tx_mpdu_attempts += FIELD_GET(MT_TXS5_F1_MPDU_TX_COUNT, txs5); - stats->tx_mpdu_fail += FIELD_GET(MT_TXS6_F1_MPDU_FAIL_COUNT, txs6); - stats->tx_mpdu_retry += FIELD_GET(MT_TXS7_F1_MPDU_RETRY_COUNT, txs7); - txrate = FIELD_GET(MT_TXS0_TX_RATE, txs); rate->mcs = FIELD_GET(MT_TX_RATE_IDX, txrate); @@ -1418,6 +1411,19 @@ mt7915_mac_parse_txs(struct mt7915_dev *dev, struct mt76_wcid *wcid, stats->tx_bw[0]++; break; } + + if (FIELD_GET(MT_TXS0_TXS_FORMAT, txs) == 2) { + /* TXSFM == 10 */ + u32 txs5, txs6, txs7; + + txs5 = le32_to_cpu(txs_data[5]); + txs6 = le32_to_cpu(txs_data[6]); + txs7 = le32_to_cpu(txs_data[7]); + + stats->tx_mpdu_attempts += FIELD_GET(MT_TXS5_F1_MPDU_TX_COUNT, txs5); + stats->tx_mpdu_fail += FIELD_GET(MT_TXS6_F1_MPDU_FAIL_COUNT, txs6); + stats->tx_mpdu_retry += FIELD_GET(MT_TXS7_F1_MPDU_RETRY_COUNT, txs7); + } } static void @@ -1469,8 +1475,6 @@ static void mt7915_mac_add_txs(struct mt7915_dev *dev, void *data) u8 pid; txs = le32_to_cpu(txs_data[0]); - if (FIELD_GET(MT_TXS0_TXS_FORMAT, txs) > 1) - return; txs = le32_to_cpu(txs_data[2]); wcidx = FIELD_GET(MT_TXS2_WCID, txs); diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h index ccce994dc07a..986a65badd1b 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h @@ -347,6 +347,9 @@ struct mt7915_tx_free { #define MT_TXS4_TIMESTAMP GENMASK(31, 0) +/* The F0 variables are for TXSFM 0x0 and 0x1. The F1 variables + * are for TXSFM 0x2 aka PPDU format. + */ #define MT_TXS5_F0_FINAL_MPDU BIT(31) #define MT_TXS5_F0_QOS BIT(30) #define MT_TXS5_F0_TX_COUNT GENMASK(29, 25) From patchwork Tue Jul 20 18:22:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 481949 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 2657FC636CE for ; Tue, 20 Jul 2021 18:26:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 002FC61209 for ; Tue, 20 Jul 2021 18:26:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233314AbhGTRoA (ORCPT ); Tue, 20 Jul 2021 13:44:00 -0400 Received: from dispatch1-us1.ppe-hosted.com ([148.163.129.52]:34278 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234888AbhGTRmi (ORCPT ); Tue, 20 Jul 2021 13:42:38 -0400 X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.7.64.31]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 855691C006C for ; Tue, 20 Jul 2021 18:23:01 +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 59CCC60008A for ; Tue, 20 Jul 2021 18:23:01 +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 1DD8C13C2BB; Tue, 20 Jul 2021 11:23:01 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com 1DD8C13C2BB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1626805381; bh=hZYM6U6V+A+zY8rJOpycuAFaM+yz8AN7L+k4Llc6AcY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PLjKKRdWHcz3EQuiKY1PVxbwQSRnrI/Sx0mR8aV3+/EGEfb1WlWSV5KTDqeFG+N2D 5hJN1nQ8OOFN/fzFhcYG6juehdqLXfdtbb8HCfM34ZirAPVC4ZUs2W6/t1E35ON1JL OS6ugItuMNxvRU/ISrGYn+SDqyzdwUB7mqWU3UmU= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ben Greear Subject: [PATCH 07/11] mt76: mt7915: Add support for tx-overrides. Date: Tue, 20 Jul 2021 11:22:51 -0700 Message-Id: <20210720182256.30536-7-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210720182256.30536-1-greearb@candelatech.com> References: <20210720182256.30536-1-greearb@candelatech.com> MIME-Version: 1.0 X-MDID: 1626805382-Af1x3PFzdwWK Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ben Greear Allow setting fix rate on transmit without using full testmode logic. txpower, dynbw, retry count is not currently supported. And, probably later need additional logic to not apply this txo to non-data frames and to smaller frames, to allow ARP and such to go through while also forcing test data frames to arbitrary tx-rates (rates which very well may not be received by peer.) Signed-off-by: Ben Greear --- drivers/net/wireless/mediatek/mt76/mt76.h | 4 + .../wireless/mediatek/mt76/mt7915/debugfs.c | 223 ++++++++++++++++++ .../net/wireless/mediatek/mt76/mt7915/mac.c | 100 ++++++-- .../wireless/mediatek/mt76/mt7915/mt7915.h | 2 + 4 files changed, 303 insertions(+), 26 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index c7c33d8f984a..b4cafe0a55f8 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -567,6 +567,7 @@ struct mt76_testmode_ops { struct mt76_testmode_data { enum mt76_testmode_state state; + u8 txo_active; /* tx overrides are active */ u32 param_set[DIV_ROUND_UP(NUM_MT76_TM_ATTRS, 32)]; struct sk_buff *tx_skb; @@ -581,6 +582,9 @@ struct mt76_testmode_data { u8 tx_rate_ldpc; u8 tx_rate_stbc; u8 tx_ltf; + u8 txbw; /* specify TX bandwidth: 0 20Mhz, 1 40Mhz, 2 80Mhz, 3 160Mhz */ + u8 tx_xmit_count; /* 0 means no-ack, 1 means one transmit, etc */ + u8 tx_dynbw; /* 0: dynamic bw disabled, 1: dynamic bw enabled */ u8 tx_antenna_mask; u8 tx_spe_idx; diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c index 3c0c667430c5..6a2810006975 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c @@ -109,6 +109,227 @@ mt7915_fw_debug_get(void *data, u64 *val) DEFINE_DEBUGFS_ATTRIBUTE(fops_fw_debug, mt7915_fw_debug_get, mt7915_fw_debug_set, "%lld\n"); +static ssize_t mt7915_read_set_rate_override(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct mt7915_dev *dev = file->private_data; + struct mt7915_sta *msta; + struct ieee80211_vif *vif; + struct wireless_dev *wdev; + struct mt76_wcid *wcid; + struct mt7915_vif *mvif; + struct mt76_phy *mphy = &dev->mt76.phy; + char* buf2; + int size=8000; + int rv, i, j, sofar; + const char buf[] = + "This allows specify specif tx rate parameters for all DATA frames on a vdev\n" + "To set a value, you specify the dev-name and key-value pairs:\n" + "tpc=10 sgi=1 mcs=x nss=x pream=x retries=x dynbw=0|1 bw=x enable=0|1\n" + "pream: 0=cck, 1=ofdm, 2=HT, 3=VHT, 4=HE_SU\n" + "cck-mcs: 0=1Mbps, 1=2Mbps, 3=5.5Mbps, 3=11Mbps\n" + "ofdm-mcs: 0=6Mbps, 1=9Mbps, 2=12Mbps, 3=18Mbps, 4=24Mbps, 5=36Mbps, 6=48Mbps, 7=54Mbps\n" + "tpc is not implemented currently, bw is 0-3 for 20-160\n" + " For example, wlan0: echo \"wlan0 tpc=255 sgi=1 mcs=0 nss=1 pream=3 retries=1 dynbw=0 bw=0 active=1\" > ...mt76/set_rate_override\n"; + + buf2 = kzalloc(size, GFP_KERNEL); + if (buf2 == NULL) + return -ENOMEM; + strcpy(buf2, buf); + sofar = strlen(buf2); + + mutex_lock(&mphy->dev->mutex); + + for (i = 0; i < ARRAY_SIZE(dev->mt76.wcid_mask); i++) { + u32 mask = dev->mt76.wcid_mask[i]; + u32 phy_mask = dev->mt76.wcid_phy_mask[i]; + + if (!mask) + continue; + + for (j = i * 32; mask; j++, mask >>= 1, phy_mask >>= 1) { + struct mt76_testmode_data *td; + + if (!(mask & 1)) + continue; + + wcid = rcu_dereference(dev->mt76.wcid[j]); + if (!wcid) + continue; + + msta = container_of(wcid, struct mt7915_sta, wcid); + + if (msta->vif != mvif) + continue; + + td = &msta->test; + vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv); + + wdev = ieee80211_vif_to_wdev(vif); + + if (!wdev) + continue; + + sofar += scnprintf(buf2 + sofar, size - sofar, + "vdev %i(%s) active=%d tpc=%d sgi=%d mcs=%d nss=%d pream=%d retries=%d dynbw=%d bw=%d\n", + j, wdev->netdev->name, + td->txo_active, td->tx_power[0], td->tx_rate_sgi, td->tx_rate_idx, + td->tx_rate_nss, td->tx_rate_mode, td->tx_xmit_count, td->tx_dynbw, + td->txbw); + if (sofar >= size) + break; + } + } + + mutex_unlock(&mphy->dev->mutex); + + rv = simple_read_from_buffer(user_buf, count, ppos, buf2, sofar); + kfree(buf2); + return rv; +} + +/* Set the rates for specific types of traffic. + */ +static ssize_t mt7915_write_set_rate_override(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct mt7915_dev *dev = file->private_data; + struct mt7915_sta *msta; + struct ieee80211_vif *vif; + struct mt76_testmode_data *td = NULL; + struct wireless_dev *wdev; + struct mt76_wcid *wcid; + struct mt76_phy *mphy = &dev->mt76.phy; + char buf[180]; + char tmp[20]; + char* tok; + int ret, i, j; + unsigned int vdev_id = 0xFFFF; + char* bufptr = buf; + long rc; + char dev_name_match[IFNAMSIZ + 2]; + + memset(buf, 0, sizeof(buf)); + + simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count); + + /* make sure that buf is null terminated */ + buf[sizeof(buf) - 1] = 0; + + /* drop the possible '\n' from the end */ + if (buf[count - 1] == '\n') + buf[count - 1] = 0; + + mutex_lock(&mphy->dev->mutex); + + /* Ignore empty lines, 'echo' appends them sometimes at least. */ + if (buf[0] == 0) { + ret = count; + goto exit; + } + + /* String starts with vdev name, ie 'wlan0' Find the proper vif that + * matches the name. + */ + for (i = 0; i < ARRAY_SIZE(dev->mt76.wcid_mask); i++) { + u32 mask = dev->mt76.wcid_mask[i]; + u32 phy_mask = dev->mt76.wcid_phy_mask[i]; + + if (!mask) + continue; + + for (j = i * 32; mask; j++, mask >>= 1, phy_mask >>= 1) { + + if (!(mask & 1)) + continue; + + wcid = rcu_dereference(dev->mt76.wcid[j]); + if (!wcid) + continue; + + msta = container_of(wcid, struct mt7915_sta, wcid); + + vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv); + + wdev = ieee80211_vif_to_wdev(vif); + + if (!wdev) + continue; + + snprintf(dev_name_match, sizeof(dev_name_match) - 1, "%s ", wdev->netdev->name); + + if (strncmp(dev_name_match, buf, strlen(dev_name_match)) == 0) { + vdev_id = j; + td = &msta->test; + bufptr = buf + strlen(dev_name_match) - 1; + break; + } + } + } + + if (vdev_id == 0xFFFF) { + if (strstr(buf, "active=0")) { + /* Ignore, we are disabling it anyway */ + ret = count; + goto exit; + } + else { + pr_info("mt7915: set-rate-override, unknown netdev name: %s\n", buf); + } + ret = -EINVAL; + goto exit; + } + +#define MT7915_PARSE_LTOK(a, b) \ + if ((tok = strstr(bufptr, " " #a "="))) { \ + char* tspace; \ + tok += 1; /* move past initial space */ \ + strncpy(tmp, tok + strlen(#a "="), sizeof(tmp) - 1); \ + tmp[sizeof(tmp) - 1] = 0; \ + tspace = strstr(tmp, " "); \ + if (tspace) { *tspace = 0; } \ + if (kstrtol(tmp, 0, &rc) != 0) { \ + pr_info("mt7915: set-rate-override: " #a "= could not be parsed, tmp: %s\n", tmp); \ + } \ + else { \ + td->b = rc; \ + } \ + } + + MT7915_PARSE_LTOK(tpc, tx_power[0]); + MT7915_PARSE_LTOK(sgi, tx_rate_sgi); + MT7915_PARSE_LTOK(mcs, tx_rate_idx); + MT7915_PARSE_LTOK(nss, tx_rate_nss); + MT7915_PARSE_LTOK(pream, tx_rate_mode); + MT7915_PARSE_LTOK(retries, tx_xmit_count); + MT7915_PARSE_LTOK(dynbw, tx_dynbw); + MT7915_PARSE_LTOK(bw, txbw); + MT7915_PARSE_LTOK(active, txo_active); + + pr_info("mt7915: set-rate-overrides, vdev %i(%s) active=%d tpc=%d sgi=%d mcs=%d nss=%d pream=%d retries=%d dynbw=%d bw=%d\n", + vdev_id, dev_name_match, + td->txo_active, td->tx_power[0], td->tx_rate_sgi, td->tx_rate_idx, + td->tx_rate_nss, td->tx_rate_mode, td->tx_xmit_count, td->tx_dynbw, + td->txbw); + + ret = count; + +exit: + mutex_unlock(&mphy->dev->mutex); + return ret; +} + +static const struct file_operations fops_set_rate_override = { + .read = mt7915_read_set_rate_override, + .write = mt7915_write_set_rate_override, + .open = simple_open, + .owner = THIS_MODULE, + .llseek = default_llseek, +}; + + static int mt7915_txs_for_no_skb_set(void *data, u64 val) { @@ -377,6 +598,8 @@ int mt7915_init_debugfs(struct mt7915_dev *dev) debugfs_create_file("ser_trigger", 0200, dir, dev, &fops_ser_trigger); debugfs_create_devm_seqfile(dev->mt76.dev, "txpower_sku", dir, mt7915_read_rate_txpower); + debugfs_create_file("set_rate_override", 0600, dir, + dev, &fops_set_rate_override); return 0; } diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 80acc07c0180..121a3cd33d70 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -758,21 +758,32 @@ mt7915_mac_fill_rx_vector(struct mt7915_dev *dev, struct sk_buff *skb) } static void -mt7915_mac_write_txwi_tm(struct mt7915_phy *phy, __le32 *txwi, +mt7915_mac_write_txwi_tm(struct mt7915_phy *phy, struct mt76_wcid *wcid, __le32 *txwi, struct sk_buff *skb) { -#ifdef CONFIG_NL80211_TESTMODE - struct mt76_testmode_data *td = &phy->mt76->test; + struct mt76_testmode_data *td; const struct ieee80211_rate *r; - u8 bw, mode, nss = td->tx_rate_nss; - u8 rate_idx = td->tx_rate_idx; + struct mt7915_sta *msta; + u8 bw, mode, nss; + u8 rate_idx; u16 rateval = 0; u32 val; bool cck = false; int band; - if (skb != phy->mt76->test.tx_skb) - return; + msta = container_of(wcid, struct mt7915_sta, wcid); + + if (msta->test.txo_active) { + td = &msta->test; + } + else { + if (skb != phy->mt76->test.tx_skb) + return; + td = &phy->mt76->test; + } + + nss = td->tx_rate_nss; + rate_idx = td->tx_rate_idx; switch (td->tx_rate_mode) { case MT76_TM_TX_MODE_HT: @@ -813,20 +824,25 @@ mt7915_mac_write_txwi_tm(struct mt7915_phy *phy, __le32 *txwi, break; } - switch (phy->mt76->chandef.width) { - case NL80211_CHAN_WIDTH_40: - bw = 1; - break; - case NL80211_CHAN_WIDTH_80: - bw = 2; - break; - case NL80211_CHAN_WIDTH_80P80: - case NL80211_CHAN_WIDTH_160: - bw = 3; - break; - default: - bw = 0; - break; + if (msta->test.txo_active) { + bw = td->txbw; + } + else { + switch (phy->mt76->chandef.width) { + case NL80211_CHAN_WIDTH_40: + bw = 1; + break; + case NL80211_CHAN_WIDTH_80: + bw = 2; + break; + case NL80211_CHAN_WIDTH_80P80: + case NL80211_CHAN_WIDTH_160: + bw = 3; + break; + default: + bw = 0; + break; + } } if (td->tx_rate_stbc && nss == 1) { @@ -838,17 +854,25 @@ mt7915_mac_write_txwi_tm(struct mt7915_phy *phy, __le32 *txwi, FIELD_PREP(MT_TX_RATE_MODE, mode) | FIELD_PREP(MT_TX_RATE_NSS, nss - 1); + /* TODO: Support per-skb txpower, p.15 of txpower doc, DW2 29:24. */ txwi[2] |= cpu_to_le32(MT_TXD2_FIX_RATE); + /* Looks like this sets tx attempt to exactly 1. + * TODO: Use td->tx_xmit_count, if in txo mode. + */ le32p_replace_bits(&txwi[3], 1, MT_TXD3_REM_TX_COUNT); if (td->tx_rate_mode < MT76_TM_TX_MODE_HT) txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE); + /* TODO: Take tx_dynbw into account in txo mode. */ val = MT_TXD6_FIXED_BW | FIELD_PREP(MT_TXD6_BW, bw) | FIELD_PREP(MT_TXD6_TX_RATE, rateval) | FIELD_PREP(MT_TXD6_SGI, td->tx_rate_sgi); + /* pr_info("mt7915: txo, nss: %d bw: %d mode: %d rate_idx: %d sgi: %d rateval: 0x%x", + nss, bw, mode, rate_idx, td->tx_rate_sgi, rateval); */ + /* for HE_SU/HE_EXT_SU PPDU * - 1x, 2x, 4x LTF + 0.8us GI * - 2x LTF + 1.6us GI, 4x LTF + 3.2us GI @@ -867,9 +891,27 @@ mt7915_mac_write_txwi_tm(struct mt7915_phy *phy, __le32 *txwi, txwi[3] &= ~cpu_to_le32(MT_TXD3_SN_VALID); txwi[6] |= cpu_to_le32(val); - txwi[7] |= cpu_to_le32(FIELD_PREP(MT_TXD7_SPE_IDX, - phy->test.spe_idx)); -#endif + if (msta->test.txo_active) { + /* see mt7915_tm_set_tx_frames */ + static const u8 spe_idx_map[] = {0, 0, 1, 0, 3, 2, 4, 0, + 9, 8, 6, 10, 16, 12, 18, 0}; + u32 spe_idx; + if (td->tx_spe_idx) { + spe_idx = td->tx_spe_idx; + } else { + u8 tx_ant = td->tx_antenna_mask; + if (!tx_ant) { + /* use antenna mask that matches our nss */ + tx_ant = GENMASK(nss - 1, 0); + } + spe_idx = spe_idx_map[tx_ant]; + } + txwi[7] |= cpu_to_le32(FIELD_PREP(MT_TXD7_SPE_IDX, spe_idx)); + } + else { + txwi[7] |= cpu_to_le32(FIELD_PREP(MT_TXD7_SPE_IDX, + phy->test.spe_idx)); + } } static void @@ -1078,8 +1120,14 @@ void mt7915_mac_write_txwi(struct mt7915_dev *dev, __le32 *txwi, txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE); } - if (mt76_testmode_enabled(mphy)) - mt7915_mac_write_txwi_tm(mphy->priv, txwi, skb); +#ifdef CONFIG_NL80211_TESTMODE + { + struct mt7915_sta *msta; + msta = container_of(wcid, struct mt7915_sta, wcid); + if (mt76_testmode_enabled(mphy) || msta->test.txo_active) + mt7915_mac_write_txwi_tm(mphy->priv, wcid, txwi, skb); + } +#endif } int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr, diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h index 9e2d547d441c..ba1d0c6e24e7 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h @@ -95,6 +95,8 @@ struct mt7915_sta { struct mt7915_sta_stats stats; struct mt7915_sta_key_conf bip; + + struct mt76_testmode_data test; }; struct mt7915_vif { From patchwork Tue Jul 20 18:22:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 481951 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 016A7C07E95 for ; Tue, 20 Jul 2021 18:26:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CE356610A7 for ; Tue, 20 Jul 2021 18:26:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232354AbhGTRo0 (ORCPT ); Tue, 20 Jul 2021 13:44:26 -0400 Received: from dispatch1-us1.ppe-hosted.com ([148.163.129.49]:46654 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234889AbhGTRmj (ORCPT ); Tue, 20 Jul 2021 13:42:39 -0400 X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.7.64.218]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id D4FA61A006D for ; Tue, 20 Jul 2021 18:23:01 +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 B1D4B84007F for ; Tue, 20 Jul 2021 18:23:01 +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 43EC513C2BC; Tue, 20 Jul 2021 11:23:01 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com 43EC513C2BC DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1626805381; bh=sC1ZykBZsD2llde5jpRnLZivLxQGRyAKPBLpsb2LwFM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TwwLhFszbVq5vDmVAcMQ165lwuG67YT52pelvZ719te1zKqiuaJ2u5jby6SsZZf3I QDOnZKCqATgZlLdAt90aGi5XhlGZmNNvoq7EaRNwN8k04jKELPHLlH15/dPvJxmeCc 5w+s/Rbk1o+5/xdXHGalli6IYE7OvCgb4pRh3N24= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ben Greear Subject: [PATCH 08/11] mt76: mt7915: Fix SGI reporting when using tx-overrides. Date: Tue, 20 Jul 2021 11:22:52 -0700 Message-Id: <20210720182256.30536-8-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210720182256.30536-1-greearb@candelatech.com> References: <20210720182256.30536-1-greearb@candelatech.com> MIME-Version: 1.0 X-MDID: 1626805382-nG3T9cp8Tm2I Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ben Greear The station wtbl logic to read rate-ctrl settings does not work when fixed rates are used. So, read sgi settings from the txo configuration in this case. Signed-off-by: Ben Greear --- drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 121a3cd33d70..0cacfdf91a11 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -176,6 +176,15 @@ static void mt7915_mac_sta_poll(struct mt7915_dev *dev) rx_cur); } + /* If we are in tx-override mode, then wtbl doesn't provide useful report + * for the SGI/LGI stuff, so just get it from the override struct. + */ + if (msta->test.txo_active) { + msta->wcid.rate_he_gi = msta->test.tx_rate_sgi; + msta->wcid.rate_short_gi = msta->test.tx_rate_sgi; + continue; + } + /* * We don't support reading GI info from txs packets. * For accurate tx status reporting and AQL improvement, From patchwork Tue Jul 20 18:22:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 483697 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 6558AC07E95 for ; Tue, 20 Jul 2021 18:26:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4CDDB610A0 for ; Tue, 20 Jul 2021 18:26:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232482AbhGTRqM (ORCPT ); Tue, 20 Jul 2021 13:46:12 -0400 Received: from dispatch1-us1.ppe-hosted.com ([148.163.129.49]:34274 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234886AbhGTRmi (ORCPT ); Tue, 20 Jul 2021 13:42:38 -0400 X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.7.64.31]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id CCFE31C006E for ; Tue, 20 Jul 2021 18:23:01 +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 AC2C660007A for ; Tue, 20 Jul 2021 18:23:01 +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 7180413C2BE; Tue, 20 Jul 2021 11:23:01 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com 7180413C2BE DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1626805381; bh=TDMfAWUi3ndw7i5HSIKX1OkblhFBE2r7VxVUK+aw7EE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Vj6E6hj5BKaOQ6hKxw6MfM/pIEz/kLDASrA1UROyfc6ttRojJvJJXKRZgpOrFsl6l SnCrCaR2xMMmi0vDpMOvQVWY4pPs5UhzNXe1X2chKg5SyIiG94e9Iz/suGOI5lkA6V nvw/JLUpgi2lkYwWhqLhHWte/BtllQwgq+EL7IN0= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ben Greear Subject: [PATCH 09/11] mt76: mt7915: txfree status to show txcount instead of latency. Date: Tue, 20 Jul 2021 11:22:53 -0700 Message-Id: <20210720182256.30536-9-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210720182256.30536-1-greearb@candelatech.com> References: <20210720182256.30536-1-greearb@candelatech.com> MIME-Version: 1.0 X-MDID: 1626805382-EjVERiEopKr7 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ben Greear Latency is not obviously that useful, but txcount can let us deduce retries, which may be more interesting. Signed-off-by: Ben Greear --- drivers/net/wireless/mediatek/mt76/mt7915/init.c | 3 +++ drivers/net/wireless/mediatek/mt76/mt7915/mac.h | 8 +++++--- drivers/net/wireless/mediatek/mt76/mt7915/regs.h | 4 ++++ 3 files changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c index 0e8296a2d75a..fb3161c08baf 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c @@ -304,6 +304,9 @@ static void mt7915_mac_init(struct mt7915_dev *dev) /* enable hardware de-agg */ mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN); + /* disable Tx latency report to enable Tx count in txfree path */ + mt76_clear(dev, MT_PLE_HOST_RPT0, MT_PLE_HOST_RPT0_TX_LATENCY); + for (i = 0; i < MT7915_WTBL_SIZE; i++) mt7915_mac_wtbl_update(dev, i, MT_WTBL_UPDATE_ADM_COUNT_CLEAR); diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h index 986a65badd1b..741d51b0fa06 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h @@ -304,13 +304,15 @@ struct mt7915_tx_free { #define MT_TX_FREE_MSDU_CNT GENMASK(9, 0) #define MT_TX_FREE_WLAN_ID GENMASK(23, 14) +/* when configured for txfree latency mode. See MT_PLE_HOST_RPT0_TX_LATENCY + * Not enabled by default now. + */ #define MT_TX_FREE_LATENCY GENMASK(12, 0) -/* 0: success, others: dropped */ +/* 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) #define MT_TX_FREE_MSDU_ID GENMASK(30, 16) #define MT_TX_FREE_PAIR BIT(31) -/* will support this field in further revision */ -#define MT_TX_FREE_RATE GENMASK(13, 0) #define MT_TXS0_FIXED_RATE BIT(31) #define MT_TXS0_BW GENMASK(30, 29) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h index 62cc32a098fc..ac4d233b8cf2 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h @@ -22,6 +22,10 @@ #define MT_PLE_BASE 0x8000 #define MT_PLE(ofs) (MT_PLE_BASE + (ofs)) +/* Modify whether txfree struct returns latency or txcount. */ +#define MT_PLE_HOST_RPT0 MT_PLE(0x030) +#define MT_PLE_HOST_RPT0_TX_LATENCY BIT(3) + #define MT_PLE_FL_Q0_CTRL MT_PLE(0x1b0) #define MT_PLE_FL_Q1_CTRL MT_PLE(0x1b4) #define MT_PLE_FL_Q2_CTRL MT_PLE(0x1b8) From patchwork Tue Jul 20 18:22:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 481950 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 0CA14C636C8 for ; Tue, 20 Jul 2021 18:26:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E13F2610A0 for ; Tue, 20 Jul 2021 18:26:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233149AbhGTRot (ORCPT ); Tue, 20 Jul 2021 13:44:49 -0400 Received: from dispatch1-us1.ppe-hosted.com ([67.231.154.164]:49714 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234895AbhGTRmk (ORCPT ); Tue, 20 Jul 2021 13:42:40 -0400 X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.110.50.13]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 29F74A0075 for ; Tue, 20 Jul 2021 18:23:02 +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 E16DD440078 for ; Tue, 20 Jul 2021 18:23:01 +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 98E6613C2BF; Tue, 20 Jul 2021 11:23:01 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com 98E6613C2BF DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1626805381; bh=fw9TM9+Q8hYX5+vRYc6jd+aPv37P3LU4jYTF/w/Hljw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dG5gAQ420CDO8EE3gPRoPhnGGEUmJo5PUf1D3bQqz7Al6QlQkGjm8qWJE7S5j/708 +ie1i+juif3twLnIy3tEe1vAccRT2H2kUIcV0aKazd/A3tX6rccbxlTHrFsCmZlQHR 7RuvmUPM8T7qMBwQNy4xr6nXpkmRG+FO1L9i5tz8= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ben Greear Subject: [PATCH 10/11] mt76: mt7915: Report tx-retries Date: Tue, 20 Jul 2021 11:22:54 -0700 Message-Id: <20210720182256.30536-10-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210720182256.30536-1-greearb@candelatech.com> References: <20210720182256.30536-1-greearb@candelatech.com> MIME-Version: 1.0 X-MDID: 1626805382-y1kZPqiwyYpE 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 | 82 +++++++++++++++++-- .../net/wireless/mediatek/mt76/mt7915/mac.h | 4 +- drivers/net/wireless/mediatek/mt76/tx.c | 6 +- 4 files changed, 86 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c index fb3161c08baf..8f4f41db5ef8 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 0cacfdf91a11..e77341ca127c 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -1260,17 +1260,22 @@ 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(); + txwi = (__le32 *)mt76_get_txwi_ptr(mdev, t); if (sta) { wcid = (struct mt76_wcid *)sta->drv_priv; @@ -1280,10 +1285,68 @@ 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); + memset(&info->status, 0, sizeof(info->status)); + + 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) { + 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; + } + } + + /* 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); + rcu_read_unlock(); + out: t->skb = NULL; mt76_put_txwi(mdev, t); @@ -1299,7 +1362,8 @@ 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 */ @@ -1315,9 +1379,12 @@ 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. @@ -1348,7 +1415,12 @@ 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); @@ -1876,7 +1948,7 @@ 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 741d51b0fa06..3f8fbed144df 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/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c index 971f6e2e0c80..cba6d8109377 100644 --- a/drivers/net/wireless/mediatek/mt76/tx.c +++ b/drivers/net/wireless/mediatek/mt76/tx.c @@ -263,6 +263,7 @@ 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; @@ -270,8 +271,11 @@ 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); From patchwork Tue Jul 20 18:22:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 483698 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 30710C636CA for ; Tue, 20 Jul 2021 18:26:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 12C06610A0 for ; Tue, 20 Jul 2021 18:26:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234058AbhGTRp7 (ORCPT ); Tue, 20 Jul 2021 13:45:59 -0400 Received: from dispatch1-us1.ppe-hosted.com ([148.163.129.52]:46664 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234902AbhGTRmo (ORCPT ); Tue, 20 Jul 2021 13:42:44 -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 8BFAC1C0063; Tue, 20 Jul 2021 18:23:02 +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 59D0EAC007E; Tue, 20 Jul 2021 18:23:02 +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 C1E8E13C340; Tue, 20 Jul 2021 11:23:01 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com C1E8E13C340 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1626805381; bh=K4cCI8cWHJPByH2GhB7exI7iSrROXfCMgKjIF0B95vw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=A7reA1eZ2nzGl4Kty+0if5fQ3NvTv9GlXgoceOVI9mE4rjbppJ2iMNP6CJOJKX1rn pRa1EODvh5eA1IDbInkpjoZ7DYz4bVAgGf40O0+Oc2pvA6WhI0GHqDRCYTlkJnOrId YCgjwPc7Y6TNMQmbWyrFjNYulpASEsiagjxCouFE= From: greearb@candelatech.com To: linux-wireless@vger.kernel.org Cc: Ryder Lee Subject: [PATCH 11/11] mt76: mt7915: add a missing HT flag for GI parsing Date: Tue, 20 Jul 2021 11:22:55 -0700 Message-Id: <20210720182256.30536-11-greearb@candelatech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210720182256.30536-1-greearb@candelatech.com> References: <20210720182256.30536-1-greearb@candelatech.com> MIME-Version: 1.0 X-MDID: 1626805383-Uk9dUq9TDDzM Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ryder Lee The previous commit missed a HT flag. Fixes: 14b220c07188 ("mt76: mt7915: report tx rate directly from tx status") Signed-off-by: Ryder Lee --- drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index e77341ca127c..cd8179331e28 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -215,7 +215,8 @@ static void mt7915_mac_sta_poll(struct mt7915_dev *dev) rate->he_gi = (val & (0x3 << offs)) >> offs; msta->wcid.rate_he_gi = rate->he_gi; /* cache for later */ - } else if (rate->flags & RATE_INFO_FLAGS_VHT_MCS) { + } else if (rate->flags & + (RATE_INFO_FLAGS_VHT_MCS | RATE_INFO_FLAGS_MCS)) { if (val & BIT(12 + bw)) { rate->flags |= RATE_INFO_FLAGS_SHORT_GI; msta->wcid.rate_short_gi = 1; @@ -225,7 +226,6 @@ static void mt7915_mac_sta_poll(struct mt7915_dev *dev) msta->wcid.rate_short_gi = 0; } } - /* TODO: Deal with HT_MCS */ } rcu_read_unlock();