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[209.132.180.67]) by mx.google.com with ESMTP id p11si19313421ota.300.2019.12.27.20.58.45; Fri, 27 Dec 2019 20:59:18 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-wireless-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=sAEm43vz; spf=pass (google.com: best guess record for domain of linux-wireless-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-wireless-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726315AbfL1Epy (ORCPT + 99 others); Fri, 27 Dec 2019 23:45:54 -0500 Received: from mail-ot1-f65.google.com ([209.85.210.65]:39734 "EHLO mail-ot1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725957AbfL1Epy (ORCPT ); Fri, 27 Dec 2019 23:45:54 -0500 Received: by mail-ot1-f65.google.com with SMTP id 77so38734962oty.6 for ; Fri, 27 Dec 2019 20:45:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=JkgLybiVNJ7wsPHPf0FIjJsyvI/FotTcsR97ncePDnA=; b=sAEm43vznvP878gLSq+BUHekeyJ1NeJwxNQX8vcmuxr1WzoCUCx00MurWpN5AqHZ7B ldFppj17+wbBBsv2WfeKuIPpLG8pY+cIxKxTdrO1YmuJ5wvy+KSVLj50pE2J4+9s4q24 ZXKreFjvCMx+AmsDiJndblXsTJpJ8223mKbUtV8x2DFXLZZlYtqHXqnVyBTt53YoBqPL D4cvvIccb5Z7G5THgfPQLq3rZ5YuBJUuBKkI0kQu5cp9PG7Xma32fAdHpnOt0Dw57W1X t/chV9sJ5ZEDwuDbwKnUI4bwhoMbbUzNWsiVac2NN5jIhgV1YL8U8xppEW++gEA863a+ sC/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=JkgLybiVNJ7wsPHPf0FIjJsyvI/FotTcsR97ncePDnA=; b=FsdKikSQ7ZnQO8OPFpIA5xfx37aMqXxFlTzxKa6swVPvvmU0lF2DX+qLbG+egz+ITP +PPhvD48VVQN9ca3ygzdwI3DDRUXX3OJJ98UPEPfWjS0udmyDFbzjt4xOTqxZwbzHnww wsiz+AIYVMWe66dspjjtpgjGm/ZzP7vuhk06/gLdeWXAA0cPYdSRDaorD8iLEPqFow7T PUoftg41kagYyOeKFzYZXsBhImrsE1A4rMTiMKmrELfvfRaAxxF48F1UKwKDVsr/CDXZ 9i9Rk5fCYQXdkUxZl2r6mMzoRY7AhrPAHrAQnHUkJUm7re4KLyzSn/Q569KPL407bpHK +xIg== X-Gm-Message-State: APjAAAX64rkJ4k5UONtIwki+6gZzTa5EZh9nJa/2RzXSAMWKz4Lj7YKm UmdWp7+t6v0uls57DBBB06WYOx6FF/0c/2/wOgw= X-Received: by 2002:a05:6830:1515:: with SMTP id k21mr45245162otp.177.1577508352407; Fri, 27 Dec 2019 20:45:52 -0800 (PST) MIME-Version: 1.0 References: <20191216092207.31032-1-john@phrozen.org> In-Reply-To: <20191216092207.31032-1-john@phrozen.org> From: Justin Capella Date: Fri, 27 Dec 2019 20:45:40 -0800 Message-ID: Subject: Re: [RESEND] ath10k: add tx hw 802.11 encapusaltion offloading support To: John Crispin Cc: Kalle Valo , ath10k , linux-wireless@vger.kernel.org, Vasanthakumar Thiagarajan Content-Type: text/plain; charset="UTF-8" Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org I think this may be a case for module_param_cb where the mode is an enum, that way you can enforce the mutual exclusion when the param is being set. This leaves the module parameters unchanged/potentially conflicting, is that going to cause a problem? + if (ethernetmode && rawmode) { + ath10k_err(ar, "ethernet and raw mode cannot co-exist\n"); + status = -EINVAL; + goto err; + } Would setting this before the firmware has been brought up cause any false assumptions later on? Maybe move to init_firmware_features like rawmode? + ar->ethernetmode = ethernetmode; Also it seems other parts of code may make assumptions if about raw mode and SW crypt, I noticed at least one more in ath10k_core_init_firmware_features in addition to what Tom mentioned-- in the ATH10K_CRYPT_MODE_SW case rawmode bit is being set. There was also an interesting comment about aggregation and raw mode, maybe interest... They also are checking for firmware support for rawmode, is there an equivalent feature bit that could be checked for ethernetmode? + if (cb->flags & ATH10K_SKB_F_HW_80211_ENCAP) + return skb->priority % IEEE80211_QOS_CTL_TID_MASK; Should this be & IEEE80211_QOS_CTL_TID_MASK even though it is same value with little endian? Also, don't take my word for it, but I have some memory that this value gets used some place where MAX_AC is used, which I think is 4 / smaller, so I'm wondering if this might wind up causing out of bounds r/w.... The name divergence from IEEE80211_TX_CTRL_HW_80211_ENCAP was confusing to me, but I'm newb. The changes in ath10k_mac_tx_h_fill_cb have a return-- so no other flags can be set, maybe this is intentional, but I notice that if the vif is type monitor there may be some confusion where ATH10K_HW_TXRX_RAW is being returned in one place but the added return is bypassing flags related to rawmode. + ret = ath10k_htt_tx_mgmt_inc_pending(htt, is_mgmt, + is_presp); + if (ret) { + ath10k_dbg(ar, ATH10K_DBG_MAC, "failed to increase tx mgmt pending count: %d, dropping\n", + ret); + ath10k_htt_tx_dec_pending(htt); I think the dec maybe should not be happening here On Mon, Dec 16, 2019, 1:23 AM John Crispin wrote: > > This patch adds support for ethernet rxtx mode to the driver. The feature > is enabled via a new module parameter. If enabled to driver will enable > the feature on a per vif basis if all other requirements were met. > > Testing on a IPQ4019 based hardware shows a increase in TCP throughput > of ~20% when the feature is enabled. > > Signed-off-by: Vasanthakumar Thiagarajan > Signed-off-by: John Crispin > --- > Resending as Johannes has merged the mac80211 part, which means we can now > also merge the driver support patches. > > drivers/net/wireless/ath/ath10k/core.c | 11 ++++ > drivers/net/wireless/ath/ath10k/core.h | 3 + > drivers/net/wireless/ath/ath10k/htt_tx.c | 24 +++++--- > drivers/net/wireless/ath/ath10k/mac.c | 75 +++++++++++++++++++----- > drivers/net/wireless/ath/ath10k/txrx.c | 11 +++- > 5 files changed, 99 insertions(+), 25 deletions(-) > > diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c > index 5ec16ce19b69..99d3d74c0033 100644 > --- a/drivers/net/wireless/ath/ath10k/core.c > +++ b/drivers/net/wireless/ath/ath10k/core.c > @@ -34,6 +34,7 @@ static bool uart_print; > static bool skip_otp; > static bool rawmode; > static bool fw_diag_log; > +static bool ethernetmode; > > unsigned long ath10k_coredump_mask = BIT(ATH10K_FW_CRASH_DUMP_REGISTERS) | > BIT(ATH10K_FW_CRASH_DUMP_CE_DATA); > @@ -46,6 +47,7 @@ module_param(skip_otp, bool, 0644); > module_param(rawmode, bool, 0644); > module_param(fw_diag_log, bool, 0644); > module_param_named(coredump_mask, ath10k_coredump_mask, ulong, 0444); > +module_param(ethernetmode, bool, 0644); > > MODULE_PARM_DESC(debug_mask, "Debugging mask"); > MODULE_PARM_DESC(uart_print, "Uart target debugging"); > @@ -54,6 +56,7 @@ MODULE_PARM_DESC(cryptmode, "Crypto mode: 0-hardware, 1-software"); > MODULE_PARM_DESC(rawmode, "Use raw 802.11 frame datapath"); > 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"); > +MODULE_PARM_DESC(ethernetmode, "Use ethernet frame datapath"); > > static const struct ath10k_hw_params ath10k_hw_params_list[] = { > { > @@ -3030,6 +3033,14 @@ static void ath10k_core_register_work(struct work_struct *work) > /* peer stats are enabled by default */ > set_bit(ATH10K_FLAG_PEER_STATS, &ar->dev_flags); > > + if (ethernetmode && rawmode) { > + ath10k_err(ar, "ethernet and raw mode cannot co-exist\n"); > + status = -EINVAL; > + goto err; > + } > + > + ar->ethernetmode = ethernetmode; > + > status = ath10k_core_probe_fw(ar); > if (status) { > ath10k_err(ar, "could not probe fw (%d)\n", status); > diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h > index 5101bf2b5b15..fe0affbc9d29 100644 > --- a/drivers/net/wireless/ath/ath10k/core.h > +++ b/drivers/net/wireless/ath/ath10k/core.h > @@ -109,6 +109,7 @@ enum ath10k_skb_flags { > ATH10K_SKB_F_MGMT = BIT(3), > ATH10K_SKB_F_QOS = BIT(4), > ATH10K_SKB_F_RAW_TX = BIT(5), > + ATH10K_SKB_F_HW_80211_ENCAP = BIT(6), > }; > > struct ath10k_skb_cb { > @@ -1222,6 +1223,8 @@ struct ath10k { > struct ath10k_bus_params bus_param; > struct completion peer_delete_done; > > + bool ethernetmode; > + > /* must be last */ > u8 drv_priv[0] __aligned(sizeof(void *)); > }; > diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c > index a182c0944cc7..0ca0705fe69a 100644 > --- a/drivers/net/wireless/ath/ath10k/htt_tx.c > +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c > @@ -1144,6 +1144,10 @@ static u8 ath10k_htt_tx_get_tid(struct sk_buff *skb, bool is_eth) > struct ieee80211_hdr *hdr = (void *)skb->data; > struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb); > > + /* Firmware takes care of tid classification for ethernet format */ > + if (cb->flags & ATH10K_SKB_F_HW_80211_ENCAP) > + return skb->priority % IEEE80211_QOS_CTL_TID_MASK; > + > if (!is_eth && ieee80211_is_mgmt(hdr->frame_control)) > return HTT_DATA_TX_EXT_TID_MGMT; > else if (cb->flags & ATH10K_SKB_F_QOS) > @@ -1378,15 +1382,17 @@ 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 (!(info->control.flags & IEEE80211_TX_CTRL_HW_80211_ENCAP)) { > + 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, > diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c > index 767c7bf16975..a7a6a8330d6a 100644 > --- a/drivers/net/wireless/ath/ath10k/mac.c > +++ b/drivers/net/wireless/ath/ath10k/mac.c > @@ -3427,12 +3427,16 @@ ath10k_mac_tx_h_get_txmode(struct ath10k *ar, > struct sk_buff *skb) > { > const struct ieee80211_hdr *hdr = (void *)skb->data; > + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); > const struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(skb); > __le16 fc = hdr->frame_control; > > if (!vif || vif->type == NL80211_IFTYPE_MONITOR) > return ATH10K_HW_TXRX_RAW; > > + if (tx_info->control.flags & IEEE80211_TX_CTRL_HW_80211_ENCAP) > + return ATH10K_HW_TXRX_ETHERNET; > + > if (ieee80211_is_mgmt(fc)) > return ATH10K_HW_TXRX_MGMT; > > @@ -3585,6 +3589,15 @@ static void ath10k_mac_tx_h_fill_cb(struct ath10k *ar, > ieee80211_is_data_qos(hdr->frame_control); > > cb->flags = 0; > + cb->vif = vif; > + cb->txq = txq; > + cb->airtime_est = airtime; > + > + if (info->control.flags & IEEE80211_TX_CTRL_HW_80211_ENCAP) { > + cb->flags |= ATH10K_SKB_F_HW_80211_ENCAP; > + return; > + } > + > if (!ath10k_tx_h_use_hwcrypto(vif, skb)) > cb->flags |= ATH10K_SKB_F_NO_HWCRYPT; > > @@ -3603,10 +3616,6 @@ static void ath10k_mac_tx_h_fill_cb(struct ath10k *ar, > cb->flags |= ATH10K_SKB_F_NO_HWCRYPT; > cb->flags |= ATH10K_SKB_F_RAW_TX; > } > - > - cb->vif = vif; > - cb->txq = txq; > - cb->airtime_est = airtime; > } > > bool ath10k_mac_tx_frm_has_freq(struct ath10k *ar) > @@ -3716,6 +3725,9 @@ static int ath10k_mac_tx(struct ath10k *ar, > const struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(skb); > int ret; > > + if (info->control.flags & IEEE80211_TX_CTRL_HW_80211_ENCAP) > + goto skip_encap; > + > /* We should disable CCK RATE due to P2P */ > if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE) > ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n"); > @@ -3739,6 +3751,7 @@ static int ath10k_mac_tx(struct ath10k *ar, > } > } > > +skip_encap: > if (!noque_offchan && info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) { > if (!ath10k_mac_tx_frm_has_freq(ar)) { > ath10k_dbg(ar, ATH10K_DBG_MAC, "mac queued offchannel skb %pK len %d\n", > @@ -3788,6 +3801,7 @@ void ath10k_offchan_tx_work(struct work_struct *work) > int ret; > unsigned long time_left; > bool tmp_peer_created = false; > + struct ieee80211_tx_info *info; > > /* FW requirement: We must create a peer before FW will send out > * an offchannel frame. Otherwise the frame will be stuck and > @@ -3807,8 +3821,14 @@ void ath10k_offchan_tx_work(struct work_struct *work) > ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %pK len %d\n", > skb, skb->len); > > - hdr = (struct ieee80211_hdr *)skb->data; > - peer_addr = ieee80211_get_DA(hdr); > + info = IEEE80211_SKB_CB(skb); > + > + if (info->control.flags & IEEE80211_TX_CTRL_HW_80211_ENCAP) { > + peer_addr = skb->data; > + } else { > + hdr = (struct ieee80211_hdr *)skb->data; > + peer_addr = ieee80211_get_DA(hdr); > + } > > spin_lock_bh(&ar->data_lock); > vdev_id = ar->scan.vdev_id; > @@ -4338,7 +4358,7 @@ 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; > + struct ieee80211_hdr *hdr; > enum ath10k_hw_txrx_mode txmode; > enum ath10k_mac_tx_path txpath; > bool is_htt; > @@ -4369,14 +4389,20 @@ static void ath10k_mac_op_tx(struct ieee80211_hw *hw, > return; > } > > - ret = ath10k_htt_tx_mgmt_inc_pending(htt, is_mgmt, is_presp); > - if (ret) { > - ath10k_dbg(ar, ATH10K_DBG_MAC, "failed to increase tx mgmt pending count: %d, dropping\n", > - ret); > - ath10k_htt_tx_dec_pending(htt); > - spin_unlock_bh(&ar->htt.tx_lock); > - ieee80211_free_txskb(ar->hw, skb); > - return; > + if (is_mgmt) { > + hdr = (struct ieee80211_hdr *)skb->data; > + is_presp = ieee80211_is_probe_resp(hdr->frame_control); > + > + ret = ath10k_htt_tx_mgmt_inc_pending(htt, is_mgmt, > + is_presp); > + if (ret) { > + ath10k_dbg(ar, ATH10K_DBG_MAC, "failed to increase tx mgmt pending count: %d, dropping\n", > + ret); > + ath10k_htt_tx_dec_pending(htt); > + spin_unlock_bh(&ar->htt.tx_lock); > + ieee80211_free_txskb(ar->hw, skb); > + return; > + } > } > spin_unlock_bh(&ar->htt.tx_lock); > } > @@ -5209,10 +5235,12 @@ static int ath10k_mac_set_txbf_conf(struct ath10k_vif *arvif) > static int ath10k_add_interface(struct ieee80211_hw *hw, > struct ieee80211_vif *vif) > { > + struct wireless_dev *wdev = ieee80211_vif_to_wdev(vif); > struct ath10k *ar = hw->priv; > struct ath10k_vif *arvif = (void *)vif->drv_priv; > struct ath10k_peer *peer; > enum wmi_sta_powersave_param param; > + int hw_encap = 0; > int ret = 0; > u32 value; > int bit; > @@ -5304,6 +5332,21 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, > break; > } > > + switch (vif->type) { > + case NL80211_IFTYPE_STATION: > + case NL80211_IFTYPE_AP_VLAN: > + if (wdev->netdev->ieee80211_ptr->use_4addr) > + break; > + /* fall through */ > + case NL80211_IFTYPE_AP: > + hw_encap = 1; > + break; > + default: > + break; > + } > + > + ieee80211_set_hw_80211_encap(vif, ar->ethernetmode & hw_encap); > + > /* Using vdev_id as queue number will make it very easy to do per-vif > * tx queue locking. This shouldn't wrap due to interface combinations > * but do a modulo for correctness sake and prevent using offchannel tx > @@ -8883,6 +8926,8 @@ int ath10k_mac_register(struct ath10k *ar) > ieee80211_hw_set(ar->hw, QUEUE_CONTROL); > ieee80211_hw_set(ar->hw, SUPPORTS_TX_FRAG); > ieee80211_hw_set(ar->hw, REPORTS_LOW_ACK); > + if (ar->ethernetmode) > + ieee80211_hw_set(ar->hw, SUPPORTS_80211_ENCAP); > > if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) > ieee80211_hw_set(ar->hw, SW_CRYPTO_CONTROL); > diff --git a/drivers/net/wireless/ath/ath10k/txrx.c b/drivers/net/wireless/ath/ath10k/txrx.c > index 39abf8b12903..1d8a6c2571a1 100644 > --- a/drivers/net/wireless/ath/ath10k/txrx.c > +++ b/drivers/net/wireless/ath/ath10k/txrx.c > @@ -50,6 +50,8 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt, > struct ath10k_skb_cb *skb_cb; > struct ath10k_txq *artxq; > struct sk_buff *msdu; > + struct ieee80211_vif *vif; > + u8 flags; > > ath10k_dbg(ar, ATH10K_DBG_HTT, > "htt tx completion msdu_id %u status %d\n", > @@ -78,6 +80,9 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt, > artxq->num_fw_queued--; > } > > + flags = skb_cb->flags; > + vif = skb_cb->vif; > + > ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id); > ath10k_htt_tx_dec_pending(htt); > if (htt->num_pending_tx == 0) > @@ -123,7 +128,11 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt, > info->status.is_valid_ack_signal = true; > } > > - ieee80211_tx_status(htt->ar->hw, msdu); > + if (flags & ATH10K_SKB_F_HW_80211_ENCAP) > + ieee80211_tx_status_8023(htt->ar->hw, vif, msdu); > + else > + ieee80211_tx_status(htt->ar->hw, msdu); > + > /* we do not own the msdu anymore */ > > return 0; > -- > 2.20.1 >