From patchwork Tue Oct 8 18:44:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bitterblue Smith X-Patchwork-Id: 833882 Received: from mail-wr1-f52.google.com (mail-wr1-f52.google.com [209.85.221.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A7C59212D17 for ; Tue, 8 Oct 2024 18:44:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.52 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728413047; cv=none; b=OCdgwaAHhJvMkkR3+hubpcwhjaXfDZXEq6nDZW2KBkA+gTS1vn7Uir9G0PGjjUNd5SR4tmlrAVDV365W1uTPfyZlqvwn/41IhhQU+fySgFVkpI6/3Q7Cu0byiwGCeBAs7hhbYy6KUWM8ZL3haRGMy+7QU33CR9s4SkbuBgji9Ek= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728413047; c=relaxed/simple; bh=Bq5zgCFmXLsJ3LuovW+5SV+B/UZh2uEIGdjhroPlaU4=; h=Message-ID:Date:MIME-Version:To:Cc:From:Subject:Content-Type; b=m9tW06Vr2TuwNtS37Zp04mmATFbIJ3Bo8Vrm92LRePSvPq69hIHiIAVL9eOUkazk0VQLKPkRSD5U7BOVs9X4NCH+C4n3V3gMGXEiCUELkIHanFVpG9UX30pZQ0TtsSKNMInRqANiOSc1CMd20yxsBGWlhyct3NwVHIHJuPtPY9c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=ArCuS6i2; arc=none smtp.client-ip=209.85.221.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ArCuS6i2" Received: by mail-wr1-f52.google.com with SMTP id ffacd0b85a97d-37d39d9f782so59376f8f.1 for ; Tue, 08 Oct 2024 11:44:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1728413044; x=1729017844; darn=vger.kernel.org; h=content-transfer-encoding:subject:from:cc:to:content-language :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=oY8qdbIaD4fQpJpbCqFCi211KMLt3iwhBJ5vOh1d3g4=; b=ArCuS6i2htiQTIHDoXKflneghi9GZeexKzVuXOnAytr0hE70rWc89zrreUQd8FCiaZ Bh546kaIhimU9718yG5iobAYMogW0N9iSW/iAENFuoQMxuWjHyXLcBxBDuM2wTOI9+Wl NfvKbvyRQX7lJ7z/gdllZ0+B//CnKfd0NIOqqdqqt1kmDBfZAQW81cIvOlVcv0lhlTRM SCi1agscTaVImDy79CQCUrXs80Pb1/mwDFnRAhl0EvHr9YWp6RPedALGL+wIYOm9HXB/ x5fGJJz9tRRrB6vj+zhuscP+bLLAKCXj+RtiFBGwpnC8w0zYaceNiyYXAQ2ChLN6avTy DOPg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728413044; x=1729017844; h=content-transfer-encoding:subject:from:cc:to:content-language :user-agent:mime-version:date:message-id:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=oY8qdbIaD4fQpJpbCqFCi211KMLt3iwhBJ5vOh1d3g4=; b=qrgxxzkWeFjTxWS+P28XC9wIBzlRriD2LbG4sgTw7o4dld4Ffg9PPRFWlahnHDLLVW YW1j+mm2tfDmJUnMK9Mo5K+8zxIeHrHFjK+lYw86ZKRyJUUzHwXtgXp5imHTQIgMzz4a 8IWSypR3gFN90WkxF2HHAbINRkEzZAJ/4pboRWs00O/+eo/zYhJbCkKt0enKMqXHLyu4 L5QYkK43rvJdsf7hdywIikzr7RfPJbPP9qGC6OMvRkxmqZW83DNbplSAUqflm3Niv7YT D0qjucWLksj8ztNU2pcc91WIB2ZeyrjaMBkDTR4oCQDyfyNcvAMBep3ZXyMAWdveCC62 N1mw== X-Gm-Message-State: AOJu0Yw4m75jYnUq+GkrR6pe+JXtg51IAcGrzfqkqkn+Osz64SFUJik+ LC+IpmzGnNF+BvJNWbZ6ozuTB4dd+B76gcnsm2lA+fXZZgLjaYQRHBzp+A== X-Google-Smtp-Source: AGHT+IFUeLvaiLNpwsJlilxrYkY5ll0P7tI03s3Kjno95xAMwdNmRLFuM4uGOfGcBdp2ZyquG8iOMg== X-Received: by 2002:a5d:5108:0:b0:37c:d522:af6d with SMTP id ffacd0b85a97d-37d0eb1ae9fmr8430975f8f.58.1728413043672; Tue, 08 Oct 2024 11:44:03 -0700 (PDT) Received: from [192.168.0.50] ([79.113.150.231]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-37d1690f1dasm8761444f8f.6.2024.10.08.11.44.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 08 Oct 2024 11:44:03 -0700 (PDT) Message-ID: Date: Tue, 8 Oct 2024 21:44:02 +0300 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: "linux-wireless@vger.kernel.org" Cc: Ping-Ke Shih , Kalle Valo From: Bitterblue Smith Subject: [PATCH] wifi: rtw88: Fix the RX aggregation in USB 3 mode RTL8822CU, RTL8822BU, and RTL8821CU don't need BIT_EN_PRE_CALC. In fact, RTL8822BU in USB 3 mode doesn't pass all the frames to the driver, resulting in much lower download speed than normal: $ iperf3 -c 192.168.0.1 -R Connecting to host 192.168.0.1, port 5201 Reverse mode, remote host 192.168.0.1 is sending [ 5] local 192.168.0.50 port 43062 connected to 192.168.0.1 port 5201 [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 26.9 MBytes 225 Mbits/sec [ 5] 1.00-2.00 sec 7.50 MBytes 62.9 Mbits/sec [ 5] 2.00-3.00 sec 8.50 MBytes 71.3 Mbits/sec [ 5] 3.00-4.00 sec 8.38 MBytes 70.3 Mbits/sec [ 5] 4.00-5.00 sec 7.75 MBytes 65.0 Mbits/sec [ 5] 5.00-6.00 sec 8.00 MBytes 67.1 Mbits/sec [ 5] 6.00-7.00 sec 8.00 MBytes 67.1 Mbits/sec [ 5] 7.00-8.00 sec 7.75 MBytes 65.0 Mbits/sec [ 5] 8.00-9.00 sec 7.88 MBytes 66.1 Mbits/sec [ 5] 9.00-10.00 sec 7.88 MBytes 66.1 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.02 sec 102 MBytes 85.1 Mbits/sec 224 sender [ 5] 0.00-10.00 sec 98.6 MBytes 82.7 Mbits/sec receiver Don't set BIT_EN_PRE_CALC. Then the speed is much better: % iperf3 -c 192.168.0.1 -R Connecting to host 192.168.0.1, port 5201 Reverse mode, remote host 192.168.0.1 is sending [ 5] local 192.168.0.50 port 39000 connected to 192.168.0.1 port 5201 [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 52.8 MBytes 442 Mbits/sec [ 5] 1.00-2.00 sec 71.9 MBytes 603 Mbits/sec [ 5] 2.00-3.00 sec 74.8 MBytes 627 Mbits/sec [ 5] 3.00-4.00 sec 75.9 MBytes 636 Mbits/sec [ 5] 4.00-5.00 sec 76.0 MBytes 638 Mbits/sec [ 5] 5.00-6.00 sec 74.1 MBytes 622 Mbits/sec [ 5] 6.00-7.00 sec 74.0 MBytes 621 Mbits/sec [ 5] 7.00-8.00 sec 76.0 MBytes 638 Mbits/sec [ 5] 8.00-9.00 sec 74.4 MBytes 624 Mbits/sec [ 5] 9.00-10.00 sec 63.9 MBytes 536 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 717 MBytes 601 Mbits/sec 24 sender [ 5] 0.00-10.00 sec 714 MBytes 599 Mbits/sec receiver Fixes: 002a5db9a52a ("wifi: rtw88: Enable USB RX aggregation for 8822c/8822b/8821c") Signed-off-by: Bitterblue Smith --- The code in the official drivers is a little broken. It sets BIT_EN_PRE_CALC and then immediately unsets it. I didn't notice that before. Maybe this should go to kernel 6.12, if it's not too late. Commit 002a5db9a52a ("wifi: rtw88: Enable USB RX aggregation for 8822c/8822b/8821c") first appears in 6.12. --- drivers/net/wireless/realtek/rtw88/usb.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/wireless/realtek/rtw88/usb.c b/drivers/net/wireless/realtek/rtw88/usb.c index 10b840d59ebd..74ee5bdbb036 100644 --- a/drivers/net/wireless/realtek/rtw88/usb.c +++ b/drivers/net/wireless/realtek/rtw88/usb.c @@ -772,7 +772,6 @@ static void rtw_usb_dynamic_rx_agg_v1(struct rtw_dev *rtwdev, bool enable) u8 size, timeout; u16 val16; - rtw_write32_set(rtwdev, REG_RXDMA_AGG_PG_TH, BIT_EN_PRE_CALC); rtw_write8_set(rtwdev, REG_TXDMA_PQ_MAP, BIT_RXDMA_AGG_EN); rtw_write8_clr(rtwdev, REG_RXDMA_AGG_PG_TH + 3, BIT(7));