From patchwork Fri Nov 4 21:13:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sven Peter X-Patchwork-Id: 13032595 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 7B898C43217 for ; Fri, 4 Nov 2022 21:14:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230072AbiKDVOO (ORCPT ); Fri, 4 Nov 2022 17:14:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57670 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230058AbiKDVNv (ORCPT ); Fri, 4 Nov 2022 17:13:51 -0400 Received: from wout3-smtp.messagingengine.com (wout3-smtp.messagingengine.com [64.147.123.19]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 64DC412770; Fri, 4 Nov 2022 14:13:38 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.west.internal (Postfix) with ESMTP id AA0633200922; Fri, 4 Nov 2022 17:13:36 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute3.internal (MEProxy); Fri, 04 Nov 2022 17:13:38 -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=1667596416; x= 1667682816; bh=NsyIxhCuy3NX42H2/3Rfy8Jj+bJmvXH1V0swWErvcpc=; b=i /wI3fbJWX8ZGr4cRKFWxxgbfK8Uo3njTA/fF5S+ybcpkBjW35P7/liz0wFF4FoIq VCnJp+kf7dGgxWcWcqpc+mAAd1H7r8A/eQzTztFbdqayAKJnjqhHZZaS4sg5agde jtn0Qceg9OVQFXaqpZ+JlqcYMwaVO3LS3614BUgkVsB8xIQlOoz8sovVX1Sy3sCR 6GrC/GeifgCWOVfUDMVPDMRkWUZPxD3HM1uvgTpa9lGPr5YE6Nu0IRo7TlD6n2Bw otdxBGpxeSkLZljPpCcs1oMrzXYXO6Nc5GbtIJeooowU/d7QCZiabu1A5G9cRMR8 2t8b6utG89NMhQs9AW+uQ== 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=1667596416; x=1667682816; bh=NsyIxhCuy3NX4 2H2/3Rfy8Jj+bJmvXH1V0swWErvcpc=; b=Vtq3mH7UfYVLQ8Pgga8QlMhzC4VF/ AlTs4GasQSZ98qF8cuXDZNz0nTP4Hr7Gw2QVui94KM1jtCzXcjqj8qX9RvLJvn+j KGB3YJRPvkYIL5XDGUZS/I7pgGhxThBDokXZ9QpEVM6zwUx+laZk6GEW5k6BmZhY kcJdgU8tMFeXe26wPNTkDdUF5Q02KNUEt+lUxoH21g4AOIikgw64aasVo1utvtx6 gCVitn9sSOgQ1OMEtMJIDsDtpSKUOBv8+cadmDAebSRFWHz5ecz4Wpyc3RhjeEkv CxR9xF0dJZachBegId4Bv2SSsFH7fbIHKfUgwIS23pglpjCiH5Qt+50NA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvgedrvddugddugeefucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepufhvvghn ucfrvghtvghruceoshhvvghnsehsvhgvnhhpvghtvghrrdguvghvqeenucggtffrrghtth gvrhhnpeejieehheekgedvjefhveekjefguddtfefhteehtdeiffelkeeiuedufeelkeej geenucevlhhushhtvghrufhiiigvpedunecurfgrrhgrmhepmhgrihhlfhhrohhmpehsvh gvnhesshhvvghnphgvthgvrhdruggvvh X-ME-Proxy: Feedback-ID: i51094778:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 4 Nov 2022 17:13:33 -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 v5 4/7] Bluetooth: hci_event: Ignore reserved bits in LE Extended Adv Report Date: Fri, 4 Nov 2022 22:13:00 +0100 Message-Id: <20221104211303.70222-5-sven@svenpeter.dev> X-Mailer: git-send-email 2.30.1 (Apple Git-130) In-Reply-To: <20221104211303.70222-1-sven@svenpeter.dev> References: <20221104211303.70222-1-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. These bits are reserved according to the Bluetooth spec anyway such that we can just drop them to ensure that the advertising results are parsed correctly. The following excerpt from a btmon trace shows a report received on channel 37 by these controllers: > HCI Event: LE Meta Event (0x3e) plen 55 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 [...]) 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 [...] Flags: 0x18 Simultaneous LE and BR/EDR (Controller) Simultaneous LE and BR/EDR (Host) Company: Harman International Industries, Inc. (87) Data: [...] Service Data (UUID 0xfddf): Name (complete): JBL Flip 5 Signed-off-by: Sven Peter --- include/net/bluetooth/hci.h | 1 + net/bluetooth/hci_event.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index e004ba04a9ae..f4aa7b78a844 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -2580,6 +2580,7 @@ struct hci_ev_le_conn_complete { #define LE_EXT_ADV_DIRECT_IND 0x0004 #define LE_EXT_ADV_SCAN_RSP 0x0008 #define LE_EXT_ADV_LEGACY_PDU 0x0010 +#define LE_EXT_ADV_EVT_TYPE_MASK 0x007f #define ADDR_LE_DEV_PUBLIC 0x00 #define ADDR_LE_DEV_RANDOM 0x01 diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index faca701bce2a..ade2628aae0d 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -6494,7 +6494,7 @@ static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, info->length)) break; - evt_type = __le16_to_cpu(info->type); + evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 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,