From patchwork Tue Aug 3 15:27:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joseph Hwang X-Patchwork-Id: 12416607 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=-19.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 5DBC6C4338F for ; Tue, 3 Aug 2021 15:27:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4A4AD60524 for ; Tue, 3 Aug 2021 15:27:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236807AbhHCP2F (ORCPT ); Tue, 3 Aug 2021 11:28:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45034 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236796AbhHCP16 (ORCPT ); Tue, 3 Aug 2021 11:27:58 -0400 Received: from mail-pj1-x1033.google.com (mail-pj1-x1033.google.com [IPv6:2607:f8b0:4864:20::1033]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 33D83C06179A for ; Tue, 3 Aug 2021 08:27:37 -0700 (PDT) Received: by mail-pj1-x1033.google.com with SMTP id j18-20020a17090aeb12b029017737e6c349so3154140pjz.0 for ; Tue, 03 Aug 2021 08:27:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=BhqChEK30aWZ/Wvulh7cv7oSE9tKVj1Gn3MSKk1RcJk=; b=HcB7kFjYh2QNPCUYLNb/FNXkyDXp8QPqNymWq92aPF1aPo30ZwQkHE94ukSkRa44tp XKwk/mkULDPuTVMxR8VNnBAniDaGFL4YmT2BsDt1EkP7ZsRvkk0h5HmwLqIHJRsm4LrN 7fzpmns2cVVXxxJoQgjgKRrtNBS7aNX5HQqZ8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=BhqChEK30aWZ/Wvulh7cv7oSE9tKVj1Gn3MSKk1RcJk=; b=LTApK6O5xEf6RAUbhpH/2UhFi5VTjuzcVwAScR5TtzneX65IrHZrBRYTCVN5IFcr/+ M0nrN/yoz5GidVThGDrcAYGHZgVBQoAKLuq/k1RXyL+uhi6wTzMSc4XtskW0blKmCWjh GlLojGHZ/0AotTBSH51sSB6SBhXmE0/geiDji3JzZGpApedd/wcrcR1MxhDYFnOjsjeJ 1fgRKvf1Xhg4XiHaxyfIhOJ4djbZK+ajNm/Ncpq7qqN3WQto9y9BXi3ZM1DCDSq0zeAs NmPimfKHV/SdKQN/NJzO5dQqUh+IXpP195WNDM+5rsqzlGdj9BeJvBbW0ZhJu7eWxAo4 k8Dw== X-Gm-Message-State: AOAM532RcmQP8AYfy520Gn4p3XpU+QWfNe3yl/ZqBlnw98FjYOIWr7io DHAmn2cOCt3V+5x9yfLNAFcR85vKIO+McA== X-Google-Smtp-Source: ABdhPJxYl4i/CstW0b2daFlFXG6mNG46pbx5DxNFXnpEvvC5tMxq9figz8+RjDlixenDYDU2E7widQ== X-Received: by 2002:aa7:804f:0:b029:334:4951:da88 with SMTP id y15-20020aa7804f0000b02903344951da88mr22832724pfm.29.1628004456119; Tue, 03 Aug 2021 08:27:36 -0700 (PDT) Received: from josephsih-z840.tpe.corp.google.com ([2401:fa00:1:10:7cf5:7e9:5266:c8ba]) by smtp.gmail.com with ESMTPSA id v30sm14922493pgk.25.2021.08.03.08.27.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Aug 2021 08:27:35 -0700 (PDT) From: Joseph Hwang To: linux-bluetooth@vger.kernel.org, marcel@holtmann.org, luiz.dentz@gmail.com, pali@kernel.org Cc: chromeos-bluetooth-upstreaming@chromium.org, josephsih@google.com, Joseph Hwang , Miao-chen Chou , "David S. Miller" , Jakub Kicinski , Johan Hedberg , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v5 4/4] Bluetooth: Support the quality report events Date: Tue, 3 Aug 2021 23:27:19 +0800 Message-Id: <20210803232539.v5.4.I20c79eef4f36c4a3802e1068e59ec4a9f4ded940@changeid> X-Mailer: git-send-email 2.32.0.554.ge1b32706d8-goog In-Reply-To: <20210803232539.v5.1.I41aec59e65ffd3226d368dabeb084af13cc133c8@changeid> References: <20210803232539.v5.1.I41aec59e65ffd3226d368dabeb084af13cc133c8@changeid> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org This patch allows a user space process to enable/disable the quality report events dynamically through the set experimental feature mgmt interface if CONFIG_BT_FEATURE_QUALITY_REPORT is enabled. Since the quality report feature needs to invoke the callback function provided by the driver, i.e., hdev->set_quality_report, a valid controller index is required. Reviewed-by: Miao-chen Chou Signed-off-by: Joseph Hwang --- Changes in v5: - Removed CONFIG_BT_FEATURE_QUALITY_REPORT since there was no large size impact. - Has checked hdev->set_quality_report is set. include/net/bluetooth/hci.h | 1 + include/net/bluetooth/hci_core.h | 2 + net/bluetooth/mgmt.c | 110 ++++++++++++++++++++++++++++++- 3 files changed, 112 insertions(+), 1 deletion(-) diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index b80415011dcd..bb6b7398f490 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -330,6 +330,7 @@ enum { HCI_ENABLE_LL_PRIVACY, HCI_CMD_PENDING, HCI_FORCE_NO_MITM, + HCI_QUALITY_REPORT, __HCI_NUM_FLAGS, }; diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 4abe3c494002..171102a6b810 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -605,6 +605,7 @@ struct hci_dev { int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); void (*cmd_timeout)(struct hci_dev *hdev); bool (*prevent_wake)(struct hci_dev *hdev); + int (*set_quality_report)(struct hci_dev *hdev, bool enable); }; #define HCI_PHY_HANDLE(handle) (handle & 0xff) @@ -758,6 +759,7 @@ extern struct mutex hci_cb_list_lock; hci_dev_clear_flag(hdev, HCI_LE_ADV); \ hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\ hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ + hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \ } while (0) /* ----- HCI interface to upper protocols ----- */ diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 1e21e014efd2..358250862720 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -3791,6 +3791,12 @@ static const u8 debug_uuid[16] = { }; #endif +/* 330859bc-7506-492d-9370-9a6f0614037f */ +static const u8 quality_report_uuid[16] = { + 0x7f, 0x03, 0x14, 0x06, 0x6f, 0x9a, 0x70, 0x93, + 0x2d, 0x49, 0x06, 0x75, 0xbc, 0x59, 0x08, 0x33, +}; + /* 671b10b5-42c0-4696-9227-eb28d1b049d6 */ static const u8 simult_central_periph_uuid[16] = { 0xd6, 0x49, 0xb0, 0xd1, 0x28, 0xeb, 0x27, 0x92, @@ -3806,7 +3812,7 @@ static const u8 rpa_resolution_uuid[16] = { static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev, void *data, u16 data_len) { - char buf[62]; /* Enough space for 3 features */ + char buf[82]; /* Enough space for 4 features: 2 + 20 * 4 */ struct mgmt_rp_read_exp_features_info *rp = (void *)buf; u16 idx = 0; u32 flags; @@ -3850,6 +3856,24 @@ static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev, idx++; } + if (hdev) { + if (hdev->set_quality_report) { + /* BIT(0): indicating if set_quality_report is + * supported by controller. + */ + flags = BIT(0); + + /* BIT(1): indicating if the feature is enabled. */ + if (hci_dev_test_flag(hdev, HCI_QUALITY_REPORT)) + flags |= BIT(1); + } else { + flags = 0; + } + memcpy(rp->features[idx].uuid, quality_report_uuid, 16); + rp->features[idx].flags = cpu_to_le32(flags); + idx++; + } + rp->feature_count = cpu_to_le16(idx); /* After reading the experimental features information, enable @@ -3892,6 +3916,21 @@ static int exp_debug_feature_changed(bool enabled, struct sock *skip) } #endif +static int exp_quality_report_feature_changed(bool enabled, struct sock *skip) +{ + struct mgmt_ev_exp_feature_changed ev; + + BT_INFO("enabled %d", enabled); + + memset(&ev, 0, sizeof(ev)); + memcpy(ev.uuid, quality_report_uuid, 16); + ev.flags = cpu_to_le32(enabled ? BIT(0) : 0); + + return mgmt_limited_event(MGMT_EV_EXP_FEATURE_CHANGED, NULL, + &ev, sizeof(ev), + HCI_MGMT_EXP_FEATURE_EVENTS, skip); +} + static int set_exp_feature(struct sock *sk, struct hci_dev *hdev, void *data, u16 data_len) { @@ -4038,6 +4077,75 @@ static int set_exp_feature(struct sock *sk, struct hci_dev *hdev, return err; } + if (!memcmp(cp->uuid, quality_report_uuid, 16)) { + bool val, changed; + int err; + + /* Command requires to use a valid controller index */ + if (!hdev) + return mgmt_cmd_status(sk, MGMT_INDEX_NONE, + MGMT_OP_SET_EXP_FEATURE, + MGMT_STATUS_INVALID_INDEX); + + /* Parameters are limited to a single octet */ + if (data_len != MGMT_SET_EXP_FEATURE_SIZE + 1) + return mgmt_cmd_status(sk, hdev->id, + MGMT_OP_SET_EXP_FEATURE, + MGMT_STATUS_INVALID_PARAMS); + + /* Only boolean on/off is supported */ + if (cp->param[0] != 0x00 && cp->param[0] != 0x01) + return mgmt_cmd_status(sk, hdev->id, + MGMT_OP_SET_EXP_FEATURE, + MGMT_STATUS_INVALID_PARAMS); + + hci_req_sync_lock(hdev); + + val = !!cp->param[0]; + changed = (val != hci_dev_test_flag(hdev, HCI_QUALITY_REPORT)); + + if (!hdev->set_quality_report) { + BT_INFO("quality report not supported"); + err = mgmt_cmd_status(sk, hdev->id, + MGMT_OP_SET_EXP_FEATURE, + MGMT_STATUS_NOT_SUPPORTED); + goto unlock_quality_report; + } + + if (changed) { + err = hdev->set_quality_report(hdev, val); + if (err) { + BT_ERR("set_quality_report value %d err %d", + val, err); + err = mgmt_cmd_status(sk, hdev->id, + MGMT_OP_SET_EXP_FEATURE, + MGMT_STATUS_FAILED); + goto unlock_quality_report; + } + if (val) + hci_dev_set_flag(hdev, HCI_QUALITY_REPORT); + else + hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); + } + + BT_INFO("quality report enable %d changed %d", + val, changed); + + memcpy(rp.uuid, quality_report_uuid, 16); + rp.flags = cpu_to_le32(val ? BIT(0) : 0); + hci_sock_set_flag(sk, HCI_MGMT_EXP_FEATURE_EVENTS); + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_SET_EXP_FEATURE, 0, + &rp, sizeof(rp)); + + if (changed) + exp_quality_report_feature_changed(val, sk); + +unlock_quality_report: + hci_req_sync_unlock(hdev); + return err; + } + return mgmt_cmd_status(sk, hdev ? hdev->id : MGMT_INDEX_NONE, MGMT_OP_SET_EXP_FEATURE, MGMT_STATUS_NOT_SUPPORTED);