From patchwork Mon Aug 1 10:36:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sven Peter X-Patchwork-Id: 12933678 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 26A9CC00144 for ; Mon, 1 Aug 2022 10:40:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231299AbiHAKkJ (ORCPT ); Mon, 1 Aug 2022 06:40:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40492 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231246AbiHAKkG (ORCPT ); Mon, 1 Aug 2022 06:40:06 -0400 Received: from out5-smtp.messagingengine.com (out5-smtp.messagingengine.com [66.111.4.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5BC4939B8A; Mon, 1 Aug 2022 03:39:55 -0700 (PDT) Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 6341B5C011B; Mon, 1 Aug 2022 06:39:54 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute2.internal (MEProxy); Mon, 01 Aug 2022 06:39:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=svenpeter.dev; h=cc:cc:content-transfer-encoding:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm3; t=1659350394; x= 1659436794; bh=ct/EECJuSwhp/U34BPYuXiltVWUcB7C+k2wANRMHh9o=; b=z 6gRzCILy+5oZjGMeDzzFSsWW3qnxZyQCaAh9PnVEaEq1MV1nPI1jRxubMFYjYDua OXJNx1KcH45PFtSA5m8zpby/aOPql/PbjmJsedisklEm0zYY/Gp7iA8HGn+3XxyY iA48keKLJp7BYEGxpYH9Ovv+J9YRgYgxpsB2gHlZntQ4c5Vs/i4dXWGiUofl19XM qBsK4xNXTmjr8JhX0upZWhWhilCXRydCkwE7TLLKmlvrBFuTlVNNQtqsZebej1Uc 6UPryObHXXDyvFetP8M9V8JP9LLBZJi5WmPKiQ7A7p6wqUenWa5QsO/AXOkR0ISH ym8hPn10Vc0caB5D9kRKQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:sender:subject :subject:to:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm3; t=1659350394; x=1659436794; bh=ct/EECJuSwhp/ U34BPYuXiltVWUcB7C+k2wANRMHh9o=; b=HMLMGgnUaVgTk2R/GhZHpGql7Trv8 +xHzcbInEf57CBsrUUw57pZuAl9KCuFJQz5foLPMt9nAmoD6ImK82oCJMmbDRq8O 1H1spvDR317VZfeC8R5YveZek/uuVzyjYafaGa8e9DHDivFC8jwkEjOLSXIcFZ+2 2PCqcYVMYGjWtzPs3HTvPu6DoYIOrf3mcwAMlqqNI9PG4K9QCyFO9QJiYOwHzxhs xWQ6CR9uGLNa20nDVE1arTFVonTxzYPrJUYn+IJc4+4Yke7Y/Y5fZ0C9G0kbp9mZ dr1kHWcnZcqpuQjlWN3kY6lJdCk+L6UMpi1HbiA4ZWIiE6tIwdbNNbfQA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvfedrvddvfedgfeduucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepufhvvghn ucfrvghtvghruceoshhvvghnsehsvhgvnhhpvghtvghrrdguvghvqeenucggtffrrghtth gvrhhnpeejieehheekgedvjefhveekjefguddtfefhteehtdeiffelkeeiuedufeelkeej geenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehsvh gvnhesshhvvghnphgvthgvrhdruggvvh X-ME-Proxy: Feedback-ID: i51094778:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 1 Aug 2022 06:39:51 -0400 (EDT) From: Sven Peter To: Marcel Holtmann , Johan Hedberg , Luiz Augusto von Dentz Cc: Sven Peter , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Krzysztof Kozlowski , Paolo Abeni , Rob Herring , Hector Martin , Alyssa Rosenzweig , asahi@lists.linux.dev, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/5] Bluetooth: hci_event: Add quirk to ignore byte in LE Extended Adv Report Date: Mon, 1 Aug 2022 12:36:31 +0200 Message-Id: <20220801103633.27772-4-sven@svenpeter.dev> X-Mailer: git-send-email 2.30.1 (Apple Git-130) In-Reply-To: <20220801103633.27772-1-sven@svenpeter.dev> References: <20220801103633.27772-1-sven@svenpeter.dev> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Broadcom controllers present on Apple Silicon devices use the upper 8 bits of the event type in the LE Extended Advertising Report for the channel on which the frame has been received. Add a quirk to drop the upper byte to ensure that the advertising results are parsed correctly. The following except from a btmon trace shows a report received on channel 37 by these controllers: > HCI Event: LE Meta Event (0x3e) plen 55 #1 [hci0] 0.912271 LE Extended Advertising Report (0x0d) Num reports: 1 Entry 0 Event type: 0x2513 Props: 0x0013 Connectable Scannable Use legacy advertising PDUs Data status: Complete Reserved (0x2500) Legacy PDU Type: Reserved (0x2513) Address type: Public (0x00) Address: XX:XX:XX:XX:XX:XX (Shenzhen Jingxun Software Telecommunication Technology Co.,Ltd) Primary PHY: LE 1M Secondary PHY: No packets SID: no ADI field (0xff) TX power: 127 dBm RSSI: -76 dBm (0xb4) Periodic advertising interval: 0.00 msec (0x0000) Direct address type: Public (0x00) Direct address: 00:00:00:00:00:00 (OUI 00-00-00) Data length: 0x1d 02 01 18 09 ff 57 00 31 1f 01 3c 86 ab 03 16 df .....W.1..<..... fd 0b 09 4a 42 4c 20 46 6c 69 70 20 35 ...JBL Flip 5 Flags: 0x18 Simultaneous LE and BR/EDR (Controller) Simultaneous LE and BR/EDR (Host) Company: Harman International Industries, Inc. (87) Data: 311f013c86ab Service Data (UUID 0xfddf): Name (complete): JBL Flip 5 Signed-off-by: Sven Peter --- include/net/bluetooth/hci.h | 11 +++++++++++ net/bluetooth/hci_event.c | 4 ++++ 2 files changed, 15 insertions(+) diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index fe7935be7dc4..47e1ee6f275d 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -274,6 +274,17 @@ enum { * during the hdev->setup vendor callback. */ HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, + + /* + * When this quirk is set, the upper 8 bits of the evt_type field of + * the LE Extended Advertising Report events are discarded. + * Some Broadcom controllers found in Apple machines put the channel + * the report was received on into these reserved bits. + * + * This quirk can be set before hci_register_dev is called or + * during the hdev->setup vendor callback. + */ + HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_EVT_TYPE, }; /* HCI device flags */ diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index af17dfb20e01..0b5d70aeea93 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -6237,6 +6237,10 @@ static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, break; evt_type = __le16_to_cpu(info->type); + if (test_bit(HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_EVT_TYPE, + &hdev->quirks)) + evt_type &= 0xff; + legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); if (legacy_evt_type != LE_ADV_INVALID) { process_adv_report(hdev, legacy_evt_type, &info->bdaddr,