From patchwork Thu Sep 7 15:12:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Iulia Tanasescu X-Patchwork-Id: 13376525 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 8B1C2EC873A for ; Thu, 7 Sep 2023 15:42:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233455AbjIGPmZ (ORCPT ); Thu, 7 Sep 2023 11:42:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231205AbjIGPYd (ORCPT ); Thu, 7 Sep 2023 11:24:33 -0400 Received: from EUR04-HE1-obe.outbound.protection.outlook.com (mail-he1eur04on2073.outbound.protection.outlook.com [40.107.7.73]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D8C271B2 for ; Thu, 7 Sep 2023 08:24:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=L5YEadlkXbWLPEUfqZePqQVOuV1VAQf50ee/IbHzEVGUlz5miLAyFZP0KFwcBo3x24zWcdqnBqtlDT6SteE5Ec46lCLJrSZNLDgDm608zM7cEQWkuxMF4JSb096Gbd2yKW36uXJsWgaXqrjwX63WMqcLjI34D/BqvtDpDC+rsoGcsIqclQfWrV2TynWeYUdzOG0+H4lhoO5U9SDJX7hzmAflv1qbQl6zDfuySvFMa2Ymr5XK7We0oaAIY9LOISsdBkhv/w++ffN08Yje9tU/EelVuBt5jEJa7XY3KdqgUYMr+obmcS99BgZQSB782KMzL6YS+JuqrYdS8DJW4E7WSg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=5ns5bZyDE+Fsxjlx5eaGnJRzyQg2H9HFfjbK/gPJ5wU=; b=TbhqmVm+jpKSr5tz2Kjx89siu7JswcBVWrpJm/fZY81d0B/N1ODIO6KaGvVO14ItRXWamBGTkmmJcW5wJnhlD7OTfwhMY3iCmKvqeKnY0Y8fVcnETtgAdYg4hULjR7mmavQUgaOhwvPnpNeorEBZLJz1GvQKRTArIFMqfExm4hfSzErowepTF/iaRtA7ddXit9oqbLADRashk/wNvKtCjY5DPHum4XtpxVIMKpbjxpEmIXPy/anz7bMHKByuiz5VMNLfV5C6mDnBmUEOQ8duQ9wXe0Bl9HoOXj7Fvts6i75pMoeY3cYCOhuWk1pMwUJh9mAhdH/SW4XCnaJGmLsO8w== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=5ns5bZyDE+Fsxjlx5eaGnJRzyQg2H9HFfjbK/gPJ5wU=; b=R/A/HCKzxfD7coKV74hTM/aFwYhK2AGLmtfZag0GpIDoPWQBPpyLI3hwHGLQfymButOWUl0hXbNXEWRYPwXAtoBkDDxoN7waPvUU5Z9VkwOrft3lGLDR/qnMZw4ILD+Kw0pSN29WyBEIHIBaBc+BC27lK1snlXBOLKbrcj3vPnM= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AS8PR04MB8898.eurprd04.prod.outlook.com (2603:10a6:20b:42d::15) by GVXPR04MB9759.eurprd04.prod.outlook.com (2603:10a6:150:111::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6745.33; Thu, 7 Sep 2023 15:12:56 +0000 Received: from AS8PR04MB8898.eurprd04.prod.outlook.com ([fe80::6e75:56f3:fc37:277b]) by AS8PR04MB8898.eurprd04.prod.outlook.com ([fe80::6e75:56f3:fc37:277b%7]) with mapi id 15.20.6745.034; Thu, 7 Sep 2023 15:12:56 +0000 From: Iulia Tanasescu To: linux-bluetooth@vger.kernel.org Cc: claudia.rosu@nxp.com, mihai-octavian.urzica@nxp.com, silviu.barbulescu@nxp.com, vlad.pruteanu@nxp.com, andrei.istodorescu@nxp.com, luiz.dentz@gmail.com, Iulia Tanasescu Subject: [PATCH BlueZ 3/3] shared/bass: Add Set Broadcast_Code opcode handler Date: Thu, 7 Sep 2023 18:12:29 +0300 Message-Id: <20230907151229.7306-4-iulia.tanasescu@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230907151229.7306-1-iulia.tanasescu@nxp.com> References: <20230907151229.7306-1-iulia.tanasescu@nxp.com> X-ClientProxiedBy: AM0PR02CA0195.eurprd02.prod.outlook.com (2603:10a6:20b:28e::32) To AS8PR04MB8898.eurprd04.prod.outlook.com (2603:10a6:20b:42d::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS8PR04MB8898:EE_|GVXPR04MB9759:EE_ X-MS-Office365-Filtering-Correlation-Id: 4a003328-00f3-4642-a80c-08dbafb4ea4e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AS8PR04MB8898.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(136003)(39860400002)(396003)(346002)(366004)(376002)(1800799009)(186009)(451199024)(2906002)(36756003)(38100700002)(38350700002)(86362001)(55236004)(52116002)(1076003)(4326008)(8676002)(8936002)(6666004)(66476007)(44832011)(26005)(5660300002)(316002)(41300700001)(66946007)(66556008)(6916009)(6512007)(6506007)(2616005)(6486002)(83380400001)(478600001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4a003328-00f3-4642-a80c-08dbafb4ea4e X-MS-Exchange-CrossTenant-AuthSource: AS8PR04MB8898.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Sep 2023 15:12:56.5102 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: p1ukWST8tO0cQFcN4d8Iy15HQht/UheBkmmphkaJEVD58Evcqc7eE9LHUAT5RtJe4UHf/HGqKviv63CgGgS7fQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: GVXPR04MB9759 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org This adds the Set Broadcast_Code opcode handler, enabling a BASS Server to sync to an encrypted BIG. --- src/shared/bass.c | 159 +++++++++++++++++++++++++++++++++++++++++++--- src/shared/bass.h | 1 + 2 files changed, 151 insertions(+), 9 deletions(-) diff --git a/src/shared/bass.c b/src/shared/bass.c index 1bb40877f..86dab03e3 100644 --- a/src/shared/bass.c +++ b/src/shared/bass.c @@ -613,9 +613,6 @@ static void connect_cb(GIOChannel *io, GError *gerr, int bis_idx; int i; - if (bcast_src->sync_state == BT_BASS_NOT_SYNCHRONIZED_TO_PA) - bcast_src->sync_state = BT_BASS_SYNCHRONIZED_TO_PA; - /* Keep io reference */ g_io_channel_ref(io); queue_push_tail(bcast_src->bises, io); @@ -661,9 +658,26 @@ static void connect_cb(GIOChannel *io, GError *gerr, g_io_channel_unref(bcast_src->listen_io); bcast_src->listen_io = NULL; + /* Close pa sync io */ + if (bcast_src->pa_sync_io) { + g_io_channel_shutdown(bcast_src->pa_sync_io, + TRUE, NULL); + g_io_channel_unref(bcast_src->pa_sync_io); + bcast_src->pa_sync_io = NULL; + } + for (i = 0; i < bcast_src->num_subgroups; i++) bcast_src->subgroup_data[i].bis_sync = BT_BASS_BIG_SYNC_FAILED_BITMASK; + + /* If BIG sync failed because of an incorrect broadcast code, + * inform client + */ + if (bcast_src->enc == BT_BASS_BIG_ENC_STATE_BCODE_REQ) + bcast_src->enc = BT_BASS_BIG_ENC_STATE_BAD_CODE; + } else { + if (bcast_src->enc == BT_BASS_BIG_ENC_STATE_BCODE_REQ) + bcast_src->enc = BT_BASS_BIG_ENC_STATE_DEC; } /* Send notification to client */ @@ -678,6 +692,66 @@ static void connect_cb(GIOChannel *io, GError *gerr, free(notify_data); } +static void confirm_cb(GIOChannel *io, gpointer user_data) +{ + struct bt_bcast_src *bcast_src = user_data; + int sk, err; + socklen_t len; + struct bt_iso_qos qos; + uint8_t *notify_data; + size_t notify_data_len; + GError *gerr = NULL; + + if (check_io_err(io)) { + DBG(bcast_src->bass, "PA sync failed"); + + /* Mark PA sync as failed and notify client */ + bcast_src->sync_state = BT_BASS_FAILED_TO_SYNCHRONIZE_TO_PA; + goto notify; + } + + bcast_src->sync_state = BT_BASS_SYNCHRONIZED_TO_PA; + bcast_src->pa_sync_io = io; + g_io_channel_ref(bcast_src->pa_sync_io); + + len = sizeof(qos); + memset(&qos, 0, len); + + sk = g_io_channel_unix_get_fd(io); + + err = getsockopt(sk, SOL_BLUETOOTH, BT_ISO_QOS, &qos, &len); + if (err < 0) { + DBG(bcast_src->bass, "Failed to get iso qos"); + return; + } + + if (!qos.bcast.encryption) { + /* BIG is not encrypted. Try to synchronize */ + bcast_src->enc = BT_BASS_BIG_ENC_STATE_NO_ENC; + + if (!bt_io_bcast_accept(bcast_src->pa_sync_io, + connect_cb, bcast_src, NULL, &gerr)) { + DBG(bcast_src->bass, "bt_io_accept: %s", gerr->message); + g_error_free(gerr); + } + return; + } + + /* BIG is encrypted. Wait for Client to provide the Broadcast_Code */ + bcast_src->enc = BT_BASS_BIG_ENC_STATE_BCODE_REQ; + +notify: + notify_data = bass_build_notif_from_bcast_src(bcast_src, + ¬ify_data_len); + + gatt_db_attribute_notify(bcast_src->attr, + (void *)notify_data, + notify_data_len, + bt_bass_get_att(bcast_src->bass)); + + free(notify_data); +} + static struct bt_bass *bass_get_session(struct bt_att *att, struct gatt_db *db, const bdaddr_t *adapter_bdaddr) { @@ -796,11 +870,6 @@ static void bass_handle_add_src_op(struct bt_bass *bass, pa_sync = util_iov_pull_mem(iov, sizeof(*pa_sync)); bcast_src->sync_state = BT_BASS_NOT_SYNCHRONIZED_TO_PA; - /* TODO: Set the encryption field based on observed BIGInfo reports, - * after PA sync establishment - */ - bcast_src->enc = BT_BASS_BIG_ENC_STATE_NO_ENC; - /* TODO: Use the pa_interval field for the sync transfer procedure */ util_iov_pull_mem(iov, sizeof(uint16_t)); @@ -852,7 +921,7 @@ static void bass_handle_add_src_op(struct bt_bass *bass, if (pa_sync != PA_SYNC_NO_SYNC && num_bis > 0) { /* If requested by client, try to synchronize to the source */ - io = bt_io_listen(connect_cb, NULL, bcast_src, NULL, &err, + io = bt_io_listen(NULL, confirm_cb, bcast_src, NULL, &err, BT_IO_OPT_SOURCE_BDADDR, &bass->ldb->adapter_bdaddr, BT_IO_OPT_DEST_BDADDR, @@ -906,6 +975,71 @@ err: free(bcast_src); } +static void bass_handle_set_bcast_code_op(struct bt_bass *bass, + struct gatt_db_attribute *attrib, + uint8_t opcode, + unsigned int id, + struct iovec *iov, + struct bt_att *att) +{ + struct bt_bass_set_bcast_code_params *params; + struct bt_bcast_src *bcast_src; + int sk, err; + socklen_t len; + struct bt_iso_qos qos; + GError *gerr = NULL; + + if (opcode == BT_ATT_OP_WRITE_REQ) + gatt_db_attribute_write_result(attrib, id, 0x00); + + /* Get Set Broadcast Code command parameters */ + params = util_iov_pull_mem(iov, sizeof(*params)); + + bcast_src = queue_find(bass->ldb->bcast_srcs, + bass_src_id_match, + ¶ms->id); + + if (!bcast_src) { + /* No source matches the written source id */ + if (opcode == BT_ATT_OP_WRITE_REQ) + gatt_db_attribute_write_result(attrib, id, + BT_BASS_ERROR_INVALID_SOURCE_ID); + + return; + } + + /* Try to sync to the source using the + * received broadcast code + */ + len = sizeof(qos); + memset(&qos, 0, len); + + if (!bcast_src->pa_sync_io) + return; + + sk = g_io_channel_unix_get_fd(bcast_src->pa_sync_io); + + err = getsockopt(sk, SOL_BLUETOOTH, BT_ISO_QOS, &qos, &len); + if (err < 0) { + DBG(bcast_src->bass, "Failed to get iso qos"); + return; + } + + /* Update socket QoS with Broadcast Code */ + memcpy(qos.bcast.bcode, params->bcast_code, BT_BASS_BCAST_CODE_SIZE); + + if (setsockopt(sk, SOL_BLUETOOTH, BT_ISO_QOS, &qos, + sizeof(qos)) < 0) { + DBG(bcast_src->bass, "Failed to set iso qos"); + return; + } + + if (!bt_io_bcast_accept(bcast_src->pa_sync_io, connect_cb, + bcast_src, NULL, &gerr)) { + DBG(bcast_src->bass, "bt_io_accept: %s", gerr->message); + g_error_free(gerr); + } +} #define BASS_OP(_str, _op, _size, _func) \ { \ @@ -934,6 +1068,8 @@ struct bass_op_handler { 0, bass_handle_remove_src_op), BASS_OP("Add Source", BT_BASS_ADD_SRC, 0, bass_handle_add_src_op), + BASS_OP("Set Broadcast Code", BT_BASS_SET_BCAST_CODE, + 0, bass_handle_set_bcast_code_op), {} }; @@ -1092,6 +1228,11 @@ static void bass_bcast_src_free(void *data) g_io_channel_unref(bcast_src->listen_io); } + if (bcast_src->pa_sync_io) { + g_io_channel_shutdown(bcast_src->pa_sync_io, TRUE, NULL); + g_io_channel_unref(bcast_src->pa_sync_io); + } + queue_destroy(bcast_src->bises, bass_bis_unref); free(bcast_src); diff --git a/src/shared/bass.h b/src/shared/bass.h index fb4b72d7d..b3f83b32e 100644 --- a/src/shared/bass.h +++ b/src/shared/bass.h @@ -57,6 +57,7 @@ struct bt_bcast_src { uint8_t num_subgroups; struct bt_bass_subgroup_data *subgroup_data; GIOChannel *listen_io; + GIOChannel *pa_sync_io; struct queue *bises; };