From patchwork Mon May 16 03:25:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Sergey Ryazanov X-Patchwork-Id: 573227 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1EF10C433F5 for ; Mon, 16 May 2022 03:25:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239642AbiEPDZq (ORCPT ); Sun, 15 May 2022 23:25:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50618 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239630AbiEPDZl (ORCPT ); Sun, 15 May 2022 23:25:41 -0400 Received: from mail-lj1-x230.google.com (mail-lj1-x230.google.com [IPv6:2a00:1450:4864:20::230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 86EDA1C925 for ; Sun, 15 May 2022 20:25:39 -0700 (PDT) Received: by mail-lj1-x230.google.com with SMTP id l19so16563326ljb.7 for ; Sun, 15 May 2022 20:25:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=3xta7mXhm2Fn94nk/9joq4nWctV2Qx65e2rWuESLvCI=; b=Hioqv9TGU/FbI35sE3TREY8e3/vmNZPGONyFHjiAwcc9MDOvUNHPD53QhsY149u620 Vevyl1GrZSRsjOrDS9hggWqA7R/8Hsht1AGFl0kqZhdN43sML7EG0G2kgzFXOhGDp8S1 ROaX1Nacry7w/o0XmxHtgGPgdVPDCvhxWwfg04FUCJuSA1M6DR91zYq2LrrSJLJpbuKv XjKSkDLL32I9GYe25ZdEh8+tUT7zEiRFi6SMcXZ++DBT9aW5c99BJUvFc0Pen4tudogj 0a4sHa5IcbbnspNdJloR3QO1OJqMmkv0JX3n2+cxZHAVKf4WFXbWNDH0u6sDp116Ljv1 xr/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=3xta7mXhm2Fn94nk/9joq4nWctV2Qx65e2rWuESLvCI=; b=vns+5LSXF26OVyuHe8koDSjO8DG2Qo5AUmZxW3xEi8tsem7ZnMoHpZNV+jtVkLAnVY 51bpLz7Db6mJFSyjJEMeUkSP+q8jk8XVHWzkLKNluxGxz+NRduW0lNjTGHbcjvcqU3pG WRBajccOuhd/JeVH8g7zLtZtjCxytBOB2bnJvNjUS1sMrG5N77afvA7+dP5Zfs7dFlDE 5MITtazZxZnN6SH/6tG5OLtiLVvpJm/JaRl26c3Cx0CZzt3cAmNUOOMFAxZ7qNhYRCSL VmlV220nOVC04C4897hpRNSruOcAcHCI7sXcCRPYP8L/e0/y/XIkhjux2wCNFOIBym3N Bdeg== X-Gm-Message-State: AOAM533PJtSvtEMXt9+Hz085yZcYU08vIJrbtR7YclB4rT19hqDe+wC2 XQOTez5Ri3zPkh1u7DS8ovY= X-Google-Smtp-Source: ABdhPJwG21mD1Uu47jm2MyFyRUP+b0rBLtkvdr0bu9qRGPrQoG4/kzUA6vA7jP5N0Yy80KvBI1zgrg== X-Received: by 2002:a2e:9e03:0:b0:24f:153c:c479 with SMTP id e3-20020a2e9e03000000b0024f153cc479mr10429362ljk.13.1652671537745; Sun, 15 May 2022 20:25:37 -0700 (PDT) Received: from rsa-laptop.internal.lan ([217.25.229.52]) by smtp.gmail.com with ESMTPSA id q18-20020a2e9152000000b0024f3d1daee5sm1337251ljg.109.2022.05.15.20.25.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 May 2022 20:25:37 -0700 (PDT) From: Sergey Ryazanov To: Kalle Valo Cc: ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, Edward Matijevic , John Crispin , =?utf-8?b?T2xkxZlpY2ggSmVkbGnEjWth?= , Tom Psyborg , Vasanthakumar Thiagarajan , Zhijun You Subject: [PATCH 1/4] ath10k: improve tx status reporting Date: Mon, 16 May 2022 06:25:16 +0300 Message-Id: <20220516032519.29831-2-ryazanov.s.a@gmail.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220516032519.29831-1-ryazanov.s.a@gmail.com> References: <20220516032519.29831-1-ryazanov.s.a@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org We use ieee80211_tx_status() to report each completed tx frame. Internally, this function calls sta_info_get_by_addrs(), what has a couple of drawbacks: 1. additional station lookup causes a performance degradation; 2. mac80211 can not properly account Ethernet encapsulated frames due to the inability to properly determine the destination (station) MAC address since ieee80211_tx_status() assumes the frame has a 802.11 header. The latter is especially destructive if we want to use hardware frames encapsulation. To fix both of these issues, replace ieee80211_tx_status() with ieee80211_tx_status_ext() call and feed it station pointer from the tx queue associated with the transmitted frame. Tested-on: QCA9888 hw 2.0 10.4-3.9.0.2-00131 Tested-on: QCA6174 hw 3.2 PCI WLAN.RM.4.4.1-00157-QCARMSWPZ-1 Signed-off-by: Sergey Ryazanov Tested-by: Oldřich Jedlička # TP-Link Archer C7 v4 & v5 (QCA9563 + QCA9880) Tested-by: Edward Matijevic # TP-Link Archer C2600 (IPQ8064 + QCA9980 10.4.1.00030-1) Tested-by: Edward Matijevic # QCA9377 PCI in Sta mode Tested-by: Zhijun You # NETGEAR R7800 (QCA9984 10.4-3.9.0.2-00159) --- Changes since RFC: * new Tested-on and Tested-by tags drivers/net/wireless/ath/ath10k/txrx.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/txrx.c b/drivers/net/wireless/ath/ath10k/txrx.c index 10123974c3da..72540434c75b 100644 --- a/drivers/net/wireless/ath/ath10k/txrx.c +++ b/drivers/net/wireless/ath/ath10k/txrx.c @@ -43,6 +43,7 @@ static void ath10k_report_offchan_tx(struct ath10k *ar, struct sk_buff *skb) int ath10k_txrx_tx_unref(struct ath10k_htt *htt, const struct htt_tx_done *tx_done) { + struct ieee80211_tx_status status; struct ath10k *ar = htt->ar; struct device *dev = ar->dev; struct ieee80211_tx_info *info; @@ -128,7 +129,16 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt, info->status.flags |= IEEE80211_TX_STATUS_ACK_SIGNAL_VALID; } - ieee80211_tx_status(htt->ar->hw, msdu); + memset(&status, 0, sizeof(status)); + status.skb = msdu; + status.info = info; + + rcu_read_lock(); + if (txq && txq->sta) + status.sta = txq->sta; + ieee80211_tx_status_ext(htt->ar->hw, &status); + rcu_read_unlock(); + /* we do not own the msdu anymore */ return 0; From patchwork Mon May 16 03:25:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Ryazanov X-Patchwork-Id: 574535 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 64DA8C433FE for ; Mon, 16 May 2022 03:25:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239630AbiEPDZs (ORCPT ); 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Sun, 15 May 2022 20:25:38 -0700 (PDT) From: Sergey Ryazanov To: Kalle Valo Cc: ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, Edward Matijevic , John Crispin , =?utf-8?b?T2xkxZlpY2ggSmVkbGnEjWth?= , Tom Psyborg , Vasanthakumar Thiagarajan , Zhijun You Subject: [PATCH 2/4] ath10k: htt_tx: do not interpret Eth frames as WiFi Date: Mon, 16 May 2022 06:25:17 +0300 Message-Id: <20220516032519.29831-3-ryazanov.s.a@gmail.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220516032519.29831-1-ryazanov.s.a@gmail.com> References: <20220516032519.29831-1-ryazanov.s.a@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org The xmit path for the Ethernet encapsulated frames become more or less usable since d740d8fd2439 ("ath10k: unify tx mode and dispatch"). This change reorganize the xmit path in a manageable way to properly support various tx modes, but misses that the Ethernet encapsulated frame is a special case. We do not have an IEEE 802.11 header at the begining of them. But the HTT Tx handler still interprets first bytes of each frame as an IEEE 802.11 Frame Control field. Than this code was copied by e62ee5c381c5 ("ath10k: Add support for htt_data_tx_desc_64 descriptor") and a2097d6444c3 ("ath10k: htt: High latency TX support") to another handlers. In fact the issue in the high latency (HL) handler was introduced by 83ac260151e7 ("ath10k: add mic bytes for pmf management packet"). Ethernet encapsulated frame tx mode stay unused until 75d85fd9993c ("ath10k: introduce basic tdls functionality") started using it for TDLS frames to avoid key selection issue in some firmwares. Trying to interpret the begining of an Ethernet encapsulated frame as an IEEE 802.11 header was not hurt us noticeably since we need to meet two conditions: (1) xmit should be performed towards a TDLS peer, and (2) the TDLS peer should have a specific OUI part of its MAC address. Looks like that the rareness in TDLS communications of OUIs that can be interpreted as an 802.11 management frame saves users from facing this issue earlier. Improve Ethernet tx mode support in the HTT Tx handler by avoiding interpreting its first bytes as an IEEE 802.11 header. While at it, make the ieee80211_hdr variable local to the code block that is guarded by !is_eth check. In this way, we clarify in which cases a frame can be interpreted as IEEE 802.11, and saves us from similar issues in the future. Credits: this change as part of xmit encapsulation offloading support was originally made by QCA and then submitted for inclusion by John Crispin [1]. But the whole work was not accepted due to the lack of a part for 64-bits descriptors [2]. Zhijun You then pointed this out to me in a reply to my initial RFC patch series. And I made this slightly reworked version that covered all the HTT Tx handler variants. 1. https://lore.kernel.org/all/20191216092207.31032-1-john@phrozen.org/ 2. https://patchwork.kernel.org/project/linux-wireless/patch/20191216092207.31032-1-john@phrozen.org/ Reported-by: Zhijun You Signed-off-by: Vasanthakumar Thiagarajan Signed-off-by: John Crispin Signed-off-by: Sergey Ryazanov --- Changes since RFC: * new patch drivers/net/wireless/ath/ath10k/htt_tx.c | 61 ++++++++++++++---------- 1 file changed, 35 insertions(+), 26 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c index 9842a4b2f78f..a19b0795c86d 100644 --- a/drivers/net/wireless/ath/ath10k/htt_tx.c +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c @@ -1275,7 +1275,6 @@ static int ath10k_htt_tx_hl(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txm struct ath10k *ar = htt->ar; int res, data_len; struct htt_cmd_hdr *cmd_hdr; - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data; struct htt_data_tx_desc *tx_desc; struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(msdu); struct sk_buff *tmp_skb; @@ -1286,11 +1285,15 @@ static int ath10k_htt_tx_hl(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txm u16 flags1 = 0; u16 msdu_id = 0; - if ((ieee80211_is_action(hdr->frame_control) || - ieee80211_is_deauth(hdr->frame_control) || - ieee80211_is_disassoc(hdr->frame_control)) && - ieee80211_has_protected(hdr->frame_control)) { - skb_put(msdu, IEEE80211_CCMP_MIC_LEN); + if (!is_eth) { + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data; + + if ((ieee80211_is_action(hdr->frame_control) || + ieee80211_is_deauth(hdr->frame_control) || + ieee80211_is_disassoc(hdr->frame_control)) && + ieee80211_has_protected(hdr->frame_control)) { + skb_put(msdu, IEEE80211_CCMP_MIC_LEN); + } } data_len = msdu->len; @@ -1387,7 +1390,6 @@ static int ath10k_htt_tx_32(struct ath10k_htt *htt, { struct ath10k *ar = htt->ar; struct device *dev = ar->dev; - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(msdu); struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(msdu); struct ath10k_hif_sg_item sg_items[2]; @@ -1419,15 +1421,19 @@ static int ath10k_htt_tx_32(struct ath10k_htt *htt, txbuf_paddr = htt->txbuf.paddr + (sizeof(struct ath10k_htt_txbuf_32) * msdu_id); - if ((ieee80211_is_action(hdr->frame_control) || - ieee80211_is_deauth(hdr->frame_control) || - ieee80211_is_disassoc(hdr->frame_control)) && - ieee80211_has_protected(hdr->frame_control)) { - skb_put(msdu, IEEE80211_CCMP_MIC_LEN); - } else if (!(skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT) && - txmode == ATH10K_HW_TXRX_RAW && - ieee80211_has_protected(hdr->frame_control)) { - skb_put(msdu, IEEE80211_CCMP_MIC_LEN); + if (!is_eth) { + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data; + + if ((ieee80211_is_action(hdr->frame_control) || + ieee80211_is_deauth(hdr->frame_control) || + ieee80211_is_disassoc(hdr->frame_control)) && + ieee80211_has_protected(hdr->frame_control)) { + skb_put(msdu, IEEE80211_CCMP_MIC_LEN); + } else if (!(skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT) && + txmode == ATH10K_HW_TXRX_RAW && + ieee80211_has_protected(hdr->frame_control)) { + skb_put(msdu, IEEE80211_CCMP_MIC_LEN); + } } skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len, @@ -1589,7 +1595,6 @@ static int ath10k_htt_tx_64(struct ath10k_htt *htt, { struct ath10k *ar = htt->ar; struct device *dev = ar->dev; - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(msdu); struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(msdu); struct ath10k_hif_sg_item sg_items[2]; @@ -1621,15 +1626,19 @@ static int ath10k_htt_tx_64(struct ath10k_htt *htt, txbuf_paddr = htt->txbuf.paddr + (sizeof(struct ath10k_htt_txbuf_64) * msdu_id); - if ((ieee80211_is_action(hdr->frame_control) || - ieee80211_is_deauth(hdr->frame_control) || - ieee80211_is_disassoc(hdr->frame_control)) && - ieee80211_has_protected(hdr->frame_control)) { - skb_put(msdu, IEEE80211_CCMP_MIC_LEN); - } else if (!(skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT) && - txmode == ATH10K_HW_TXRX_RAW && - ieee80211_has_protected(hdr->frame_control)) { - skb_put(msdu, IEEE80211_CCMP_MIC_LEN); + if (!is_eth) { + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data; + + if ((ieee80211_is_action(hdr->frame_control) || + ieee80211_is_deauth(hdr->frame_control) || + ieee80211_is_disassoc(hdr->frame_control)) && + ieee80211_has_protected(hdr->frame_control)) { + skb_put(msdu, IEEE80211_CCMP_MIC_LEN); + } else if (!(skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT) && + txmode == ATH10K_HW_TXRX_RAW && + ieee80211_has_protected(hdr->frame_control)) { + skb_put(msdu, IEEE80211_CCMP_MIC_LEN); + } } skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len, From patchwork Mon May 16 03:25:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Ryazanov X-Patchwork-Id: 574534 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 549B3C4332F for ; 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Sun, 15 May 2022 20:25:39 -0700 (PDT) From: Sergey Ryazanov To: Kalle Valo Cc: ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, Edward Matijevic , John Crispin , =?utf-8?b?T2xkxZlpY2ggSmVkbGnEjWth?= , Tom Psyborg , Vasanthakumar Thiagarajan , Zhijun You Subject: [PATCH 3/4] ath10k: turn rawmode into frame_mode Date: Mon, 16 May 2022 06:25:18 +0300 Message-Id: <20220516032519.29831-4-ryazanov.s.a@gmail.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220516032519.29831-1-ryazanov.s.a@gmail.com> References: <20220516032519.29831-1-ryazanov.s.a@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Turn boolean rawmode module param into integer frame_mode param that contains value from ath10k_hw_txrx_mode enum. As earlier the default param value is non-RAW (native Wi-Fi) encapsulation. The param name is selected to be consistent with the similar ath11k param. This is a preparation step for upcoming encapsulation offloading support. Signed-off-by: Sergey Ryazanov --- Changes since RFC: * changed position in series: #2 -> #3 * rebased on top of latest ath-next drivers/net/wireless/ath/ath10k/core.c | 11 +++++++---- drivers/net/wireless/ath/ath10k/core.h | 1 + 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index 688177453b07..5654387acb4b 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -33,9 +33,11 @@ EXPORT_SYMBOL(ath10k_debug_mask); static unsigned int ath10k_cryptmode_param; static bool uart_print; static bool skip_otp; -static bool rawmode; static bool fw_diag_log; +/* frame mode values are mapped as per enum ath10k_hw_txrx_mode */ +unsigned int ath10k_frame_mode = ATH10K_HW_TXRX_NATIVE_WIFI; + unsigned long ath10k_coredump_mask = BIT(ATH10K_FW_CRASH_DUMP_REGISTERS) | BIT(ATH10K_FW_CRASH_DUMP_CE_DATA); @@ -44,15 +46,16 @@ module_param_named(debug_mask, ath10k_debug_mask, uint, 0644); module_param_named(cryptmode, ath10k_cryptmode_param, uint, 0644); module_param(uart_print, bool, 0644); module_param(skip_otp, bool, 0644); -module_param(rawmode, bool, 0644); module_param(fw_diag_log, bool, 0644); +module_param_named(frame_mode, ath10k_frame_mode, uint, 0644); module_param_named(coredump_mask, ath10k_coredump_mask, ulong, 0444); MODULE_PARM_DESC(debug_mask, "Debugging mask"); MODULE_PARM_DESC(uart_print, "Uart target debugging"); MODULE_PARM_DESC(skip_otp, "Skip otp failure for calibration in testmode"); MODULE_PARM_DESC(cryptmode, "Crypto mode: 0-hardware, 1-software"); -MODULE_PARM_DESC(rawmode, "Use raw 802.11 frame datapath"); +MODULE_PARM_DESC(frame_mode, + "Datapath frame mode (0: raw, 1: native wifi (default))"); MODULE_PARM_DESC(coredump_mask, "Bitfield of what to include in firmware crash file"); MODULE_PARM_DESC(fw_diag_log, "Diag based fw log debugging"); @@ -2599,7 +2602,7 @@ static int ath10k_core_init_firmware_features(struct ath10k *ar) ar->htt.max_num_amsdu = ATH10K_HTT_MAX_NUM_AMSDU_DEFAULT; ar->htt.max_num_ampdu = ATH10K_HTT_MAX_NUM_AMPDU_DEFAULT; - if (rawmode) { + if (ath10k_frame_mode == ATH10K_HW_TXRX_RAW) { if (!test_bit(ATH10K_FW_FEATURE_RAW_MODE_SUPPORT, fw_file->fw_features)) { ath10k_err(ar, "rawmode = 1 requires support from firmware"); diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index 8bfabbcfdb14..d70d7d088a2b 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -1314,6 +1314,7 @@ static inline bool ath10k_peer_stats_enabled(struct ath10k *ar) return false; } +extern unsigned int ath10k_frame_mode; extern unsigned long ath10k_coredump_mask; void ath10k_core_napi_sync_disable(struct ath10k *ar); From patchwork Mon May 16 03:25:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Sergey Ryazanov X-Patchwork-Id: 573225 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A5EC8C43217 for ; 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Sun, 15 May 2022 20:25:40 -0700 (PDT) From: Sergey Ryazanov To: Kalle Valo Cc: ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, Edward Matijevic , John Crispin , =?utf-8?b?T2xkxZlpY2ggSmVkbGnEjWth?= , Tom Psyborg , Vasanthakumar Thiagarajan , Zhijun You Subject: [PATCH 4/4] ath10k: add encapsulation offloading support Date: Mon, 16 May 2022 06:25:19 +0300 Message-Id: <20220516032519.29831-5-ryazanov.s.a@gmail.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220516032519.29831-1-ryazanov.s.a@gmail.com> References: <20220516032519.29831-1-ryazanov.s.a@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Frame encapsulation from Ethernet into the IEEE 802.11 frame format takes a considerable host CPU time on the xmit path. The firmware is able to do this operation for us, so enable encapsulation offloading for AP and Sta interface types to improve overall system performance. The driver is almost ready for encapsulation offloading support. There are only a few places where the driver assumes the frame format is IEEE 802.11 that need to be fixed. Encapsulation offloading is currently disabled by default and the driver utilizes mac80211 encapsulation support. To activate offloading, the frame_mode=2 parameter should be passed during module loading. On a QCA9563+QCA9888-based access point in bridged mode, encapsulation offloading increases TCP 16-streams DL throughput from 365 to 396 mbps (+8%) and UDP DL throughput from 436 to 483 mbps (+11%). Tested-on: QCA9888 hw 2.0 10.4-3.9.0.2-00131 Tested-on: QCA6174 hw 3.2 PCI WLAN.RM.4.4.1-00157-QCARMSWPZ-1 Signed-off-by: Sergey Ryazanov Tested-by: Oldřich Jedlička # TP-Link Archer C7 v4 & v5 (QCA9563 + QCA9880) Tested-by: Edward Matijevic # TP-Link Archer C2600 (IPQ8064 + QCA9980 10.4.1.00030-1) Tested-by: Edward Matijevic # QCA9377 PCI in Sta mode Tested-by: Zhijun You # NETGEAR R7800 (QCA9984 10.4-3.9.0.2-00159) --- Changes since RFC: * new Tested-on and Tested-by tags * changed position in series: #3 -> #4 * rebased on top of latest ath-next drivers/net/wireless/ath/ath10k/core.c | 2 +- drivers/net/wireless/ath/ath10k/mac.c | 67 +++++++++++++++++++++----- 2 files changed, 55 insertions(+), 14 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index 5654387acb4b..276954b70d63 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -55,7 +55,7 @@ MODULE_PARM_DESC(uart_print, "Uart target debugging"); MODULE_PARM_DESC(skip_otp, "Skip otp failure for calibration in testmode"); MODULE_PARM_DESC(cryptmode, "Crypto mode: 0-hardware, 1-software"); MODULE_PARM_DESC(frame_mode, - "Datapath frame mode (0: raw, 1: native wifi (default))"); + "Datapath frame mode (0: raw, 1: native wifi (default), 2: ethernet)"); MODULE_PARM_DESC(coredump_mask, "Bitfield of what to include in firmware crash file"); MODULE_PARM_DESC(fw_diag_log, "Diag based fw log debugging"); diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 3570a5895ea8..ebd5b9a8943e 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -3713,6 +3713,9 @@ ath10k_mac_tx_h_get_txmode(struct ath10k *ar, const struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(skb); __le16 fc = hdr->frame_control; + if (IEEE80211_SKB_CB(skb)->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) + return ATH10K_HW_TXRX_ETHERNET; + if (!vif || vif->type == NL80211_IFTYPE_MONITOR) return ATH10K_HW_TXRX_RAW; @@ -3873,6 +3876,12 @@ static void ath10k_mac_tx_h_fill_cb(struct ath10k *ar, bool noack = false; cb->flags = 0; + + if (info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) { + cb->flags |= ATH10K_SKB_F_QOS; /* Assume data frames are QoS */ + goto finish_cb_fill; + } + if (!ath10k_tx_h_use_hwcrypto(vif, skb)) cb->flags |= ATH10K_SKB_F_NO_HWCRYPT; @@ -3911,6 +3920,7 @@ static void ath10k_mac_tx_h_fill_cb(struct ath10k *ar, cb->flags |= ATH10K_SKB_F_RAW_TX; } +finish_cb_fill: cb->vif = vif; cb->txq = txq; cb->airtime_est = airtime; @@ -4034,7 +4044,11 @@ static int ath10k_mac_tx(struct ath10k *ar, ath10k_tx_h_seq_no(vif, skb); break; case ATH10K_HW_TXRX_ETHERNET: - ath10k_tx_h_8023(skb); + /* Convert 802.11->802.3 header only if the frame was erlier + * encapsulated to 802.11 by mac80211. Otherwise pass it as is. + */ + if (!(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) + ath10k_tx_h_8023(skb); break; case ATH10K_HW_TXRX_RAW: if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags) && @@ -4645,12 +4659,10 @@ static void ath10k_mac_op_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif = info->control.vif; struct ieee80211_sta *sta = control->sta; struct ieee80211_txq *txq = NULL; - struct ieee80211_hdr *hdr = (void *)skb->data; enum ath10k_hw_txrx_mode txmode; enum ath10k_mac_tx_path txpath; bool is_htt; bool is_mgmt; - bool is_presp; int ret; u16 airtime; @@ -4664,8 +4676,14 @@ static void ath10k_mac_op_tx(struct ieee80211_hw *hw, is_mgmt = (txpath == ATH10K_MAC_TX_HTT_MGMT); if (is_htt) { + bool is_presp = false; + spin_lock_bh(&ar->htt.tx_lock); - is_presp = ieee80211_is_probe_resp(hdr->frame_control); + if (!(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) { + struct ieee80211_hdr *hdr = (void *)skb->data; + + is_presp = ieee80211_is_probe_resp(hdr->frame_control); + } ret = ath10k_htt_tx_inc_pending(htt); if (ret) { @@ -5465,6 +5483,30 @@ static int ath10k_mac_set_txbf_conf(struct ath10k_vif *arvif) ar->wmi.vdev_param->txbf, value); } +static void ath10k_update_vif_offload(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath10k_vif *arvif = (void *)vif->drv_priv; + struct ath10k *ar = hw->priv; + u32 vdev_param; + int ret; + + if (ath10k_frame_mode != ATH10K_HW_TXRX_ETHERNET || + ar->wmi.vdev_param->tx_encap_type == WMI_VDEV_PARAM_UNSUPPORTED || + (vif->type != NL80211_IFTYPE_STATION && + vif->type != NL80211_IFTYPE_AP)) + vif->offload_flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; + + vdev_param = ar->wmi.vdev_param->tx_encap_type; + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, + ATH10K_HW_TXRX_NATIVE_WIFI); + /* 10.X firmware does not support this VDEV parameter. Do not warn */ + if (ret && ret != -EOPNOTSUPP) { + ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n", + arvif->vdev_id, ret); + } +} + /* * TODO: * Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE, @@ -5674,15 +5716,7 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, arvif->def_wep_key_idx = -1; - vdev_param = ar->wmi.vdev_param->tx_encap_type; - ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, - ATH10K_HW_TXRX_NATIVE_WIFI); - /* 10.X firmware does not support this VDEV parameter. Do not warn */ - if (ret && ret != -EOPNOTSUPP) { - ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n", - arvif->vdev_id, ret); - goto err_vdev_delete; - } + ath10k_update_vif_offload(hw, vif); /* Configuring number of spatial stream for monitor interface is causing * target assert in qca9888 and qca6174. @@ -9375,6 +9409,7 @@ static const struct ieee80211_ops ath10k_ops = { .stop = ath10k_stop, .config = ath10k_config, .add_interface = ath10k_add_interface, + .update_vif_offload = ath10k_update_vif_offload, .remove_interface = ath10k_remove_interface, .configure_filter = ath10k_configure_filter, .bss_info_changed = ath10k_bss_info_changed, @@ -10044,6 +10079,12 @@ int ath10k_mac_register(struct ath10k *ar) if (test_bit(WMI_SERVICE_TDLS_UAPSD_BUFFER_STA, ar->wmi.svc_map)) ieee80211_hw_set(ar->hw, SUPPORTS_TDLS_BUFFER_STA); + if (ath10k_frame_mode == ATH10K_HW_TXRX_ETHERNET) { + if (ar->wmi.vdev_param->tx_encap_type != + WMI_VDEV_PARAM_UNSUPPORTED) + ieee80211_hw_set(ar->hw, SUPPORTS_TX_ENCAP_OFFLOAD); + } + ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; ar->hw->wiphy->max_remain_on_channel_duration = 5000;