From patchwork Sat Mar 12 10:08:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manish Mandlik X-Patchwork-Id: 12778785 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 D0D50C433FE for ; Sat, 12 Mar 2022 10:09:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231704AbiCLKKY (ORCPT ); Sat, 12 Mar 2022 05:10:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47488 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231697AbiCLKKV (ORCPT ); Sat, 12 Mar 2022 05:10:21 -0500 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E86892272EE for ; Sat, 12 Mar 2022 02:09:15 -0800 (PST) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-2dc44b6dc9dso90086567b3.23 for ; Sat, 12 Mar 2022 02:09:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=KYvhJwEqPqMacll2Nmd0cKWfMMmSrt6TYTGYVr6fAKo=; b=J7927ySszHyeEQ7P3AfY7detl3yHPIjk9WdOIkUB8+zI2dkgItouavznSbYeg3NM+P SXANcpzXzr3G/7UmiTDBUm88mHvQp2aL2VATbxYYqV7D1DdBv5ZoxAQTX3Vs+qiW7I5B 4zV1G9DGOv7Mt5OkPAoI6c13wbFEgyatJJ7jtAUNK1V8jHkroNF6kmgknUSn+dt3gDTs F0+ynuPrf1nqKM8RahsoEZHKcR7VchM17ovI8tyUc3uTtPsGp+QbOc4cbu6frU1Qi06R EF0rKjFbynmwND6YkEz6lAcGwdMSRWh1R4fsqzk8M6SYRs/5P751Zaii0RPBZ3cSYrfO Y1Rw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=KYvhJwEqPqMacll2Nmd0cKWfMMmSrt6TYTGYVr6fAKo=; b=YnsiAlJ1iKBhDx6G2mJs+j6Gke2igEPduDs52MgUo20j/0l5qWQm+nY88TUMxUPTwC hkKObvkoO0EYPwnh96cvdhUEn87kmBew2dZ7vOpf2K/SgQ+NC5+t7JJv0hZ41R6F/2JQ 7zUHSzoiH2kgUNPQtL+iWu9yqgWA4oSvwvrs29mfyJuOK87cNHJTo9F71ENc+HD8uHtA LdeiXo70k1+rrUeEWo1bNyWCD9jEZNsIMyjfpgD6IGgN3ulVpjfda66m87qgAX9Ybliy TM5cOU6AIeXI225TPbWs2cQwToKUBz5DmNGGPL7SJnVpXfukl0vBuN8ECMna1LcxONyl xsFQ== X-Gm-Message-State: AOAM533JMCYRRwiPCOT2bEkXI0BR+1ZX8X7KjGLhB5yeQttvLw1IIpNW M9nmkzGfgYM2Xi5/iGGTJOMfSVZThOUOlQ== X-Google-Smtp-Source: ABdhPJxcRzDPnhDhS87upQvOk2nbkWf71y95bto7e4L03qhYhuyrC/KST/9j5nK7UuzuIkXsbhSUQCrLvX6E5w== X-Received: from mmandlik.mtv.corp.google.com ([2620:15c:202:201:1cf8:bbfc:56cd:c500]) (user=mmandlik job=sendgmr) by 2002:a81:493:0:b0:2dc:a1c3:5e13 with SMTP id 141-20020a810493000000b002dca1c35e13mr11655097ywe.381.1647079755192; Sat, 12 Mar 2022 02:09:15 -0800 (PST) Date: Sat, 12 Mar 2022 02:08:59 -0800 In-Reply-To: <20220312020707.1.I2b7f789329979102339d7e0717522ba417b63109@changeid> Message-Id: <20220312020707.2.Ie20f132ad5cb6bcd435d6c6e0fca8a9d858e83d4@changeid> Mime-Version: 1.0 References: <20220312020707.1.I2b7f789329979102339d7e0717522ba417b63109@changeid> X-Mailer: git-send-email 2.35.1.723.g4982287a31-goog Subject: [PATCH 2/2] Bluetooth: Send AdvMonitor Dev Found for all matched devices From: Manish Mandlik To: marcel@holtmann.org, luiz.dentz@gmail.com Cc: chromeos-bluetooth-upstreaming@chromium.org, linux-bluetooth@vger.kernel.org, Manish Mandlik , Miao-chen Chou , "David S. Miller" , Jakub Kicinski , Johan Hedberg , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org When an Advertisement Monitor is configured with SamplingPeriod 0xFF, the controller reports only one adv report along with the MSFT Monitor Device event. When an advertiser matches multiple monitors, some controllers send one adv report for each matched monitor; whereas, some controllers send just one adv report for all matched monitors. In such a case, report Adv Monitor Device Found event for each matched monitor. Signed-off-by: Manish Mandlik Reviewed-by: Miao-chen Chou --- net/bluetooth/mgmt.c | 70 +++++++++++++++++++++++--------------------- 1 file changed, 37 insertions(+), 33 deletions(-) diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index d59c70e9166f..e4da2318a2f6 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -9628,17 +9628,44 @@ void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, NULL); } +static void mgmt_send_adv_monitor_device_found(struct hci_dev *hdev, + struct sk_buff *skb, + struct sock *skip_sk, + u16 handle) +{ + struct sk_buff *advmon_skb; + size_t advmon_skb_len; + __le16 *monitor_handle; + + if (!skb) + return; + + advmon_skb_len = (sizeof(struct mgmt_ev_adv_monitor_device_found) - + sizeof(struct mgmt_ev_device_found)) + skb->len; + advmon_skb = mgmt_alloc_skb(hdev, MGMT_EV_ADV_MONITOR_DEVICE_FOUND, + advmon_skb_len); + if (!advmon_skb) + return; + + /* ADV_MONITOR_DEVICE_FOUND is similar to DEVICE_FOUND event except + * that it also has 'monitor_handle'. Make a copy of DEVICE_FOUND and + * store monitor_handle of the matched monitor. + */ + monitor_handle = skb_put(advmon_skb, sizeof(*monitor_handle)); + *monitor_handle = cpu_to_le16(handle); + skb_put_data(advmon_skb, skb->data, skb->len); + + mgmt_event_skb(advmon_skb, skip_sk); +} + static void mgmt_adv_monitor_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, bool report_device, struct sk_buff *skb, struct sock *skip_sk) { - struct sk_buff *advmon_skb; - size_t advmon_skb_len; - __le16 *monitor_handle; struct monitored_device *dev, *tmp; bool matched = false; - bool notify = false; + bool notified = false; /* We have received the Advertisement Report because: * 1. the kernel has initiated active discovery @@ -9660,25 +9687,6 @@ static void mgmt_adv_monitor_device_found(struct hci_dev *hdev, return; } - advmon_skb_len = (sizeof(struct mgmt_ev_adv_monitor_device_found) - - sizeof(struct mgmt_ev_device_found)) + skb->len; - advmon_skb = mgmt_alloc_skb(hdev, MGMT_EV_ADV_MONITOR_DEVICE_FOUND, - advmon_skb_len); - if (!advmon_skb) { - if (report_device) - mgmt_event_skb(skb, skip_sk); - else - kfree_skb(skb); - return; - } - - /* ADV_MONITOR_DEVICE_FOUND is similar to DEVICE_FOUND event except - * that it also has 'monitor_handle'. Make a copy of DEVICE_FOUND and - * store monitor_handle of the matched monitor. - */ - monitor_handle = skb_put(advmon_skb, sizeof(*monitor_handle)); - skb_put_data(advmon_skb, skb->data, skb->len); - hdev->advmon_pend_notify = false; list_for_each_entry_safe(dev, tmp, &hdev->monitored_devices, list) { @@ -9686,8 +9694,10 @@ static void mgmt_adv_monitor_device_found(struct hci_dev *hdev, matched = true; if (!dev->notified) { - *monitor_handle = cpu_to_le16(dev->handle); - notify = true; + mgmt_send_adv_monitor_device_found(hdev, skb, + skip_sk, + dev->handle); + notified = true; dev->notified = true; } } @@ -9697,25 +9707,19 @@ static void mgmt_adv_monitor_device_found(struct hci_dev *hdev, } if (!report_device && - ((matched && !notify) || !msft_monitor_supported(hdev))) { + ((matched && !notified) || !msft_monitor_supported(hdev))) { /* Handle 0 indicates that we are not active scanning and this * is a subsequent advertisement report for an already matched * Advertisement Monitor or the controller offloading support * is not available. */ - *monitor_handle = 0; - notify = true; + mgmt_send_adv_monitor_device_found(hdev, skb, skip_sk, 0); } if (report_device) mgmt_event_skb(skb, skip_sk); else kfree_skb(skb); - - if (notify) - mgmt_event_skb(advmon_skb, skip_sk); - else - kfree_skb(advmon_skb); } void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,