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 ; Mon, 16 May 2022 03:26:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239637AbiEPDZw (ORCPT ); Sun, 15 May 2022 23:25:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50710 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239641AbiEPDZo (ORCPT ); Sun, 15 May 2022 23:25:44 -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 8B47D627A for ; Sun, 15 May 2022 20:25:42 -0700 (PDT) Received: by mail-lj1-x230.google.com with SMTP id 4so16555057ljw.11 for ; Sun, 15 May 2022 20:25:42 -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=QsXjAksxhDD482ESF/DVPaOiiVIPCc9jJEkk9TSOspM=; b=TCJSQNb31zYuOXWefeqvE73ZcyfpDecifQBXlE7jHv3Ty8M9h0+c+ub3h6b3Qzi1Fr FOBwF6esbG9rYB2ot7ikNc2cogWfLqn/VSyVtM5OVeM+HDfA60d59bZPrtV7qfJOecta 7uVZmu0u5+oEmcrY3oXbakuOHSxWev+byDy9TPvnG7DdurS8OciYlZe5g+iIQkDN5jWY Nct5FscLLaw+wj2DoX/nQOjXkhY500+l9rIBv/CEKiHcPUV21AqycGGpe2aBgQCu1Koh 1dgdHL6a+Nz2lfICpBb2+wWHWyA0g1RPKSj3okXrrcZLFRvBorKotldw1vAUNAgY7hjR BYig== 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=QsXjAksxhDD482ESF/DVPaOiiVIPCc9jJEkk9TSOspM=; b=hrZhvA74W4VCf7W/1YnMHHRaab9nplSYf8iCtzpT+mPNr3sWK0lS2+T/O6xs4voIjf frOWty22WR1UBmR3eDneVDKoIjL7vu3qPfuDqsrBipOWgKfPhCDW67lsCX/PcnXJtTwf Bnbgf/jKyG/gAgp1uWs8/2UY0qvacW/L+JUMa9n8w9d3KO57CGoVv6ORPz/GyoaJAQ0M ooPx59Z+ieqI++J0hM7cKIPlEkDNrQP/9H3AUoRXdMtNjV5sLEBegiJ5C3iNQ6wtd+uB uSioCey7fjppjFZrxzCBlmVOtQUAEe+830aUqXHOuXNox0TW6d5G55qZAPXhs2BVBq2Z FdSQ== X-Gm-Message-State: AOAM530f5FsvenhHRevskYcDyyHbTy1+Kxxutsq72INT3clpxMtKMukP ZFlHCem/oV8MaxjMpe0OuIo= X-Google-Smtp-Source: ABdhPJwrqmXVSJyO5s8ZstEYsBJfDuNrRJvTZcg/qoymGHLj3ib4GkHI9jfQleZczC4S2giP/OElvg== X-Received: by 2002:a2e:b911:0:b0:24f:310d:7f02 with SMTP id b17-20020a2eb911000000b0024f310d7f02mr9867106ljb.179.1652671540882; Sun, 15 May 2022 20:25:40 -0700 (PDT) Received: from rsa-laptop.internal.lan ([217.25.229.52]) by smtp.gmail.com with ESMTPSA id q18-20020a2e9152000000b0024f3d1daee5sm1337251ljg.109.2022.05.15.20.25.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); 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;