From patchwork Mon Aug 2 23:56:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Augusto von Dentz X-Patchwork-Id: 12414961 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 173E8C4320A for ; Mon, 2 Aug 2021 23:56:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E3A0560EE8 for ; Mon, 2 Aug 2021 23:56:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232540AbhHBX4e (ORCPT ); Mon, 2 Aug 2021 19:56:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47898 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232530AbhHBX4d (ORCPT ); Mon, 2 Aug 2021 19:56:33 -0400 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 40987C06175F for ; Mon, 2 Aug 2021 16:56:21 -0700 (PDT) Received: by mail-pj1-x1034.google.com with SMTP id j1so27388424pjv.3 for ; Mon, 02 Aug 2021 16:56:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=EIV/jOLZXW3e+AoNpqxHs2tTs2yzMdGcFlZnIDBtNQw=; b=vSA/B2QN6nBW6/xtYXQtDmMPUcRtVyCyJQ+6Epi0163jobw/N/wMdyh2ITnripIkDz 9bVWWHFJ0q8Hy+gSH8BaMRqR6Hjd2cmj/Fwg1+J0OY1v6lZdVEli8WIrvQEdGjxtq0Tc NHLdAaqRaFuaZhRLgI+r4vhwPKIbe5GFL1KXnQejcvLM78650YPCOsGRlDlauJKPQK/f lgCoqWiD+NAGCvoLbrp9W1YYvg8XEp0TJt9VuXLDJDn90a7QDM20nHOeH07OJLIog7Xx QQxZ3vZ18WO4Rzwjm/unBaDYOm4TNy9tdEnaf3FBOzxKdqyBSfJjr+jiqTFRKmEkG2VG 3xyA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=EIV/jOLZXW3e+AoNpqxHs2tTs2yzMdGcFlZnIDBtNQw=; b=E+hPWdwEDrG+y/dXxZSbGqtqHu81qHig/Wpco+/2Ww5xnIKSwt8UfnezQq/vmpEIX5 x5B637olYcY+wKfE1HZnIHt7KvyzY39fkawBjfOa2S7vnbVaBp0RVIv91iwEa+sJdX40 81vBKeqotEpPZ2n1Q8pQcG81xSP7MtFuVUivNylZl215Kt32RBo4L8bn+9awg9+VPmoA K/t4DeVw8kuT971cJDbqfrJrKHbpeOEfB4qvM3ZE0J1rGjKnoyN34T41nPWDvR1r8oaN kA6tCLcgJnpyP75yxFaZ/7BouEqwph42qVRIAcCfeRRocOMHD72EbNG0Mt5RNgYiok6V vQeA== X-Gm-Message-State: AOAM530AKWDkwHpsnj0jE4mCqQDzwnO914qpZeHFXadmxYzMUNvr2j44 EBMk41hEv7msS4ewgK/oDM3tOu3lXGE= X-Google-Smtp-Source: ABdhPJxJNNWLeURGmLfDszdnMxva69lAI8JWFWDKOgIVBdPhqFxE9Wv/8t5OHHe2nVGakdBFhWpWhQ== X-Received: by 2002:a17:90a:c713:: with SMTP id o19mr1322777pjt.23.1627948580570; Mon, 02 Aug 2021 16:56:20 -0700 (PDT) Received: from lvondent-mobl4.intel.com (c-71-56-157-77.hsd1.or.comcast.net. [71.56.157.77]) by smtp.gmail.com with ESMTPSA id y24sm12358676pfp.191.2021.08.02.16.56.19 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Aug 2021 16:56:20 -0700 (PDT) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [RESEND 1/2] Bluetooth: HCI: Add proper tracking for enable status of adv instances Date: Mon, 2 Aug 2021 16:56:18 -0700 Message-Id: <20210802235619.238065-1-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Luiz Augusto von Dentz This adds a field to track if advertising instances are enabled or not and only clear HCI_LE_ADV flag if there is no instance left advertising. Signed-off-by: Luiz Augusto von Dentz --- include/net/bluetooth/hci_core.h | 1 + net/bluetooth/hci_event.c | 28 ++++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 4abe3c494002..b79b31359bf8 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -221,6 +221,7 @@ struct oob_data { struct adv_info { struct list_head list; + bool enabled; bool pending; __u8 instance; __u32 flags; diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index ea7fc09478be..35c5cc9f91b0 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -1277,7 +1277,9 @@ static void hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, struct sk_buff *skb) { struct hci_cp_le_set_ext_adv_enable *cp; + struct hci_cp_ext_adv_set *set; __u8 status = *((__u8 *) skb->data); + struct adv_info *adv = NULL, *n; BT_DBG("%s status 0x%2.2x", hdev->name, status); @@ -1288,22 +1290,48 @@ static void hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, if (!cp) return; + set = (void *)cp->data; + hci_dev_lock(hdev); + if (cp->num_of_sets) + adv = hci_find_adv_instance(hdev, set->handle); + if (cp->enable) { struct hci_conn *conn; hci_dev_set_flag(hdev, HCI_LE_ADV); + if (adv) + adv->enabled = true; + conn = hci_lookup_le_connect(hdev); if (conn) queue_delayed_work(hdev->workqueue, &conn->le_conn_timeout, conn->conn_timeout); } else { + if (adv) { + adv->enabled = false; + /* If just one instance was disabled check if there are + * any other instance enabled before clearing HCI_LE_ADV + */ + list_for_each_entry_safe(adv, n, &hdev->adv_instances, + list) { + if (adv->enabled) + goto unlock; + } + } else { + /* All instances shall be considered disabled */ + list_for_each_entry_safe(adv, n, &hdev->adv_instances, + list) + adv->enabled = false; + } + hci_dev_clear_flag(hdev, HCI_LE_ADV); } +unlock: hci_dev_unlock(hdev); } From patchwork Mon Aug 2 23:56:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Augusto von Dentz X-Patchwork-Id: 12414959 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8889C4338F for ; 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[71.56.157.77]) by smtp.gmail.com with ESMTPSA id y24sm12358676pfp.191.2021.08.02.16.56.20 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Aug 2021 16:56:21 -0700 (PDT) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [RESEND 2/2] Bluetooth: Fix not generating RPA when required Date: Mon, 2 Aug 2021 16:56:19 -0700 Message-Id: <20210802235619.238065-2-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210802235619.238065-1-luiz.dentz@gmail.com> References: <20210802235619.238065-1-luiz.dentz@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Luiz Augusto von Dentz Code was checking if random_addr and hdev->rpa match without first checking if the RPA has not been set (BDADDR_ANY), furthermore it was clearing HCI_RPA_EXPIRED before the command completes and the RPA is actually programmed which in case of failure would leave the expired RPA still set. Since advertising instance have a similar problem the clearing of HCI_RPA_EXPIRED has been moved to hci_event.c after checking the random address is in fact the hdev->rap and then proceed to set the expire timeout. Signed-off-by: Luiz Augusto von Dentz --- include/net/bluetooth/hci_core.h | 4 ++ net/bluetooth/hci_event.c | 32 +++++++++---- net/bluetooth/hci_request.c | 81 ++++++++++++++------------------ 3 files changed, 61 insertions(+), 56 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index b79b31359bf8..b011eeea28c3 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1413,6 +1413,10 @@ void hci_conn_del_sysfs(struct hci_conn *conn); !hci_dev_test_flag(dev, HCI_AUTO_OFF)) #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ hci_dev_test_flag(dev, HCI_SC_ENABLED)) +#define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ + !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) +#define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ + !adv->rpa_expired) #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 35c5cc9f91b0..38decf474f31 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -40,6 +40,8 @@ #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ "\x00\x00\x00\x00\x00\x00\x00\x00" +#define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000) + /* Handle HCI Event packets */ static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb, @@ -1171,6 +1173,12 @@ static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb) bacpy(&hdev->random_addr, sent); + if (!bacmp(&hdev->rpa, sent)) { + hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); + queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, + secs_to_jiffies(hdev->rpa_timeout)); + } + hci_dev_unlock(hdev); } @@ -1201,24 +1209,30 @@ static void hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, { __u8 status = *((__u8 *) skb->data); struct hci_cp_le_set_adv_set_rand_addr *cp; - struct adv_info *adv_instance; + struct adv_info *adv; if (status) return; cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); - if (!cp) + /* Update only in case the adv instance since handle 0x00 shall be using + * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and + * non-extended adverting. + */ + if (!cp || !cp->handle) return; hci_dev_lock(hdev); - if (!cp->handle) { - /* Store in hdev for instance 0 (Set adv and Directed advs) */ - bacpy(&hdev->random_addr, &cp->bdaddr); - } else { - adv_instance = hci_find_adv_instance(hdev, cp->handle); - if (adv_instance) - bacpy(&adv_instance->random_addr, &cp->bdaddr); + adv = hci_find_adv_instance(hdev, cp->handle); + if (adv) { + bacpy(&adv->random_addr, &cp->bdaddr); + if (!bacmp(&hdev->rpa, &cp->bdaddr)) { + adv->rpa_expired = false; + queue_delayed_work(hdev->workqueue, + &adv->rpa_expired_cb, + secs_to_jiffies(hdev->rpa_timeout)); + } } hci_dev_unlock(hdev); diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c index 1d14adc023e9..f15626607b2d 100644 --- a/net/bluetooth/hci_request.c +++ b/net/bluetooth/hci_request.c @@ -2072,8 +2072,6 @@ int hci_get_random_address(struct hci_dev *hdev, bool require_privacy, * current RPA has expired then generate a new one. */ if (use_rpa) { - int to; - /* If Controller supports LL Privacy use own address type is * 0x03 */ @@ -2084,14 +2082,10 @@ int hci_get_random_address(struct hci_dev *hdev, bool require_privacy, *own_addr_type = ADDR_LE_DEV_RANDOM; if (adv_instance) { - if (!adv_instance->rpa_expired && - !bacmp(&adv_instance->random_addr, &hdev->rpa)) + if (adv_rpa_valid(adv_instance)) return 0; - - adv_instance->rpa_expired = false; } else { - if (!hci_dev_test_and_clear_flag(hdev, HCI_RPA_EXPIRED) && - !bacmp(&hdev->random_addr, &hdev->rpa)) + if (rpa_valid(hdev)) return 0; } @@ -2103,14 +2097,6 @@ int hci_get_random_address(struct hci_dev *hdev, bool require_privacy, bacpy(rand_addr, &hdev->rpa); - to = msecs_to_jiffies(hdev->rpa_timeout * 1000); - if (adv_instance) - queue_delayed_work(hdev->workqueue, - &adv_instance->rpa_expired_cb, to); - else - queue_delayed_work(hdev->workqueue, - &hdev->rpa_expired, to); - return 0; } @@ -2153,6 +2139,30 @@ void __hci_req_clear_ext_adv_sets(struct hci_request *req) hci_req_add(req, HCI_OP_LE_CLEAR_ADV_SETS, 0, NULL); } +static void set_random_addr(struct hci_request *req, bdaddr_t *rpa) +{ + struct hci_dev *hdev = req->hdev; + + /* If we're advertising or initiating an LE connection we can't + * go ahead and change the random address at this time. This is + * because the eventual initiator address used for the + * subsequently created connection will be undefined (some + * controllers use the new address and others the one we had + * when the operation started). + * + * In this kind of scenario skip the update and let the random + * address be updated at the next cycle. + */ + if (hci_dev_test_flag(hdev, HCI_LE_ADV) || + hci_lookup_le_connect(hdev)) { + bt_dev_dbg(hdev, "Deferring random address update"); + hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); + return; + } + + hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, rpa); +} + int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance) { struct hci_cp_le_set_ext_adv_params cp; @@ -2255,6 +2265,13 @@ int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance) } else { if (!bacmp(&random_addr, &hdev->random_addr)) return 0; + /* Instance 0x00 doesn't have an adv_info, instead it + * uses hdev->random_addr to track its address so + * whenever it needs to be updated this also set the + * random address since hdev->random_addr is shared with + * scan state machine. + */ + set_random_addr(req, &random_addr); } memset(&cp, 0, sizeof(cp)); @@ -2512,30 +2529,6 @@ void hci_req_clear_adv_instance(struct hci_dev *hdev, struct sock *sk, false); } -static void set_random_addr(struct hci_request *req, bdaddr_t *rpa) -{ - struct hci_dev *hdev = req->hdev; - - /* If we're advertising or initiating an LE connection we can't - * go ahead and change the random address at this time. This is - * because the eventual initiator address used for the - * subsequently created connection will be undefined (some - * controllers use the new address and others the one we had - * when the operation started). - * - * In this kind of scenario skip the update and let the random - * address be updated at the next cycle. - */ - if (hci_dev_test_flag(hdev, HCI_LE_ADV) || - hci_lookup_le_connect(hdev)) { - bt_dev_dbg(hdev, "Deferring random address update"); - hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); - return; - } - - hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, rpa); -} - int hci_update_random_address(struct hci_request *req, bool require_privacy, bool use_rpa, u8 *own_addr_type) { @@ -2547,8 +2540,6 @@ int hci_update_random_address(struct hci_request *req, bool require_privacy, * the current RPA in use, then generate a new one. */ if (use_rpa) { - int to; - /* If Controller supports LL Privacy use own address type is * 0x03 */ @@ -2558,8 +2549,7 @@ int hci_update_random_address(struct hci_request *req, bool require_privacy, else *own_addr_type = ADDR_LE_DEV_RANDOM; - if (!hci_dev_test_and_clear_flag(hdev, HCI_RPA_EXPIRED) && - !bacmp(&hdev->random_addr, &hdev->rpa)) + if (rpa_valid(hdev)) return 0; err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa); @@ -2570,9 +2560,6 @@ int hci_update_random_address(struct hci_request *req, bool require_privacy, set_random_addr(req, &hdev->rpa); - to = msecs_to_jiffies(hdev->rpa_timeout * 1000); - queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, to); - return 0; }