From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 80474C433F5 for ; Thu, 11 Nov 2021 11:54:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 67DB461215 for ; Thu, 11 Nov 2021 11:54:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233201AbhKKL46 (ORCPT ); Thu, 11 Nov 2021 06:56:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48966 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232570AbhKKL44 (ORCPT ); Thu, 11 Nov 2021 06:56:56 -0500 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6022FC061766 for ; Thu, 11 Nov 2021 03:54:07 -0800 (PST) Received: by mail-yb1-xb49.google.com with SMTP id t24-20020a252d18000000b005c225ae9e16so8948384ybt.15 for ; Thu, 11 Nov 2021 03:54:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:message-id:mime-version:subject:from:to:cc; bh=Hgd5YNG4upTVksFs9U+r5jmVvwpkkXvR39uZVhLasCA=; b=tO7a86t4tu8YX1hGLaS/0nJv74RPnfRHZF+/h2hcjoHeneujABR4wmNeYqch4pJql8 znCEQCBD4j8tjp0tJVDUi9kXFkFDS/psPsUfEG+v+DHSfu9svjWQeMSmwrW9Qq1V1qr3 0X3BHiFTD6jrUEDtkLOwJYOCT77RITOlXNcAmkLstAPy4jQeAUPaGT2YdRk/euKYwYMn 4jDn9nExCgWzke6XHz9KqhQVg+Q6ZtQNK155Ws4Xg4wvxMESLj6xwtDrZ0xjq4F9Uy+8 QBEepNGU27gCiiCetzm4Sw+FHtUKe3PYH6tG0Bxw4wcuL3f8oE38OkPW2uJN+n0P2uoB UCng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=Hgd5YNG4upTVksFs9U+r5jmVvwpkkXvR39uZVhLasCA=; b=S8YWVzKJJ35Ih1t6Eqf7ZB7kRnhQPU1mJ/tqDeWjlWVpnrebZpmeGYISJGM30RwuW6 DA/EwzGzEuopo20F/wGPVE3K9pBWOPBlydArAAs1thXxqCVv8UM0gaaZgXJq4R+v/EMx 0PuUouCAMXnEAgUgVun1cLIeWuGJPbW7YKKZMXcKFsa/WLAfFxJDdY4NEfuC4vpTcQ8D DAEUSZb4kyNkoRy05ntmDLiA1vMt2+x3CgwwbMnfn4+PU/lhSOE+nidXseoOh0KNsw4c pAOLLN3xnKKhNV5ebMR3Epqi1wcgFu01Boi6g3HvpMMVXx26uEEzFq6Zwh49IJQOkjYB GZzw== X-Gm-Message-State: AOAM532t45/zmf8IX+5RFYifDiQCnN6dM3TNWIaApcEYmmigv+7M7xWy fEZtRf3BFC7gY1MWFcOutbIslyY0u7F3 X-Google-Smtp-Source: ABdhPJwbEdHA/SYjwH5ny9OeUCta03+SBhoyRu7ZFXJb/kosZsNn3+InlZemiUIZc39h0lnyTHgmhh6CPO6W X-Received: from apusaka-p920.tpe.corp.google.com ([2401:fa00:1:10:b87e:3eb:e17e:1273]) (user=apusaka job=sendgmr) by 2002:a05:6902:150b:: with SMTP id q11mr7798659ybu.386.1636631646640; Thu, 11 Nov 2021 03:54:06 -0800 (PST) Date: Thu, 11 Nov 2021 19:53:50 +0800 Message-Id: <20211111195320.1.Id7366eb14b6f48173fcbf17846ace59479179c7c@changeid> Mime-Version: 1.0 X-Mailer: git-send-email 2.34.0.rc0.344.g81b53c2807-goog Subject: [PATCH 1/3] Bluetooth: Send device found event on name resolve failure From: Archie Pusaka To: linux-bluetooth , Luiz Augusto von Dentz , Marcel Holtmann Cc: CrosBT Upstreaming , Archie Pusaka , Miao-chen Chou , "David S. Miller" , Jakub Kicinski , Johan Hedberg , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Archie Pusaka Introducing CONFIRM_NAME_FAILED flag that will be sent together with device found event on name resolve failure. This will provide the userspace with an information so it can decide not to resolve the name for these devices in the future. Signed-off-by: Archie Pusaka Reviewed-by: Miao-chen Chou --- Hi maintainers, This is the patch series for remote name request as was discussed here. https://patchwork.kernel.org/project/bluetooth/patch/20211028191805.1.I35b7f3a496f834de6b43a32f94b6160cb1467c94@changeid/ Please also review the corresponding userspace change. Thanks, Archie include/net/bluetooth/mgmt.h | 1 + net/bluetooth/hci_event.c | 11 ++++------- net/bluetooth/mgmt.c | 11 ++++++++--- 3 files changed, 13 insertions(+), 10 deletions(-) diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h index 23a0524061b7..113438f295bf 100644 --- a/include/net/bluetooth/mgmt.h +++ b/include/net/bluetooth/mgmt.h @@ -940,6 +940,7 @@ struct mgmt_ev_auth_failed { #define MGMT_DEV_FOUND_LEGACY_PAIRING 0x02 #define MGMT_DEV_FOUND_NOT_CONNECTABLE 0x04 #define MGMT_DEV_FOUND_INITIATED_CONN 0x08 +#define MGMT_DEV_FOUND_CONFIRM_NAME_FAILED 0x10 #define MGMT_EV_DEVICE_FOUND 0x0012 struct mgmt_ev_device_found { diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index d4b75a6cfeee..2de3080659f9 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -2175,13 +2175,10 @@ static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, return; list_del(&e->list); - if (name) { - e->name_state = NAME_KNOWN; - mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, - e->data.rssi, name, name_len); - } else { - e->name_state = NAME_NOT_KNOWN; - } + + e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; + mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, + name, name_len); if (hci_resolve_next_name(hdev)) return; diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 06384d761928..c1d6fbc19207 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -9615,7 +9615,8 @@ void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, { struct mgmt_ev_device_found *ev; char buf[sizeof(*ev) + HCI_MAX_NAME_LENGTH + 2]; - u16 eir_len; + u16 eir_len = 0; + u32 flags = 0; ev = (struct mgmt_ev_device_found *) buf; @@ -9625,10 +9626,14 @@ void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, ev->addr.type = link_to_bdaddr(link_type, addr_type); ev->rssi = rssi; - eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, name, - name_len); + if (name) + eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, name, + name_len); + else + flags |= MGMT_DEV_FOUND_CONFIRM_NAME_FAILED; ev->eir_len = cpu_to_le16(eir_len); + ev->flags = cpu_to_le32(flags); mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, sizeof(*ev) + eir_len, NULL); } -- 2.34.0.rc0.344.g81b53c2807-goog