From patchwork Wed Jun 17 10:41:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcel Holtmann X-Patchwork-Id: 196847 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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 6DE81C433E1 for ; Wed, 17 Jun 2020 10:42:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 56B242082F for ; Wed, 17 Jun 2020 10:42:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726634AbgFQKmV (ORCPT ); Wed, 17 Jun 2020 06:42:21 -0400 Received: from coyote.holtmann.net ([212.227.132.17]:54537 "EHLO mail.holtmann.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726591AbgFQKmN (ORCPT ); Wed, 17 Jun 2020 06:42:13 -0400 Received: from localhost.localdomain (p5b3d2638.dip0.t-ipconnect.de [91.61.38.56]) by mail.holtmann.org (Postfix) with ESMTPSA id 72E88CECD9 for ; Wed, 17 Jun 2020 12:52:02 +0200 (CEST) From: Marcel Holtmann To: linux-bluetooth@vger.kernel.org Subject: [PATCH 07/14] Bluetooth: Add handler of MGMT_OP_READ_ADV_MONITOR_FEATURES Date: Wed, 17 Jun 2020 12:41:58 +0200 Message-Id: <5fb754651cc3886858f5fd7700dd7937f798c919.1592390407.git.marcel@holtmann.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: References: MIME-Version: 1.0 Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Miao-chen Chou This adds the request handler of MGMT_OP_READ_ADV_MONITOR_FEATURES command. Since the controller-based monitoring is not yet in place, this report only the supported features but not the enabled features. The following test was performed. - Issuing btmgmt advmon-features. Signed-off-by: Miao-chen Chou Signed-off-by: Marcel Holtmann --- include/net/bluetooth/hci_core.h | 24 ++++++++++++++++ net/bluetooth/hci_core.c | 10 ++++++- net/bluetooth/mgmt.c | 48 ++++++++++++++++++++++++++++++++ net/bluetooth/msft.c | 7 +++++ net/bluetooth/msft.h | 9 ++++++ 5 files changed, 97 insertions(+), 1 deletion(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 6f88e5d81bd2..4e9d51087674 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -25,6 +25,7 @@ #ifndef __HCI_CORE_H #define __HCI_CORE_H +#include #include #include @@ -237,6 +238,24 @@ struct adv_info { #define HCI_MAX_ADV_INSTANCES 5 #define HCI_DEFAULT_ADV_DURATION 2 +struct adv_pattern { + struct list_head list; + __u8 ad_type; + __u8 offset; + __u8 length; + __u8 value[HCI_MAX_AD_LENGTH]; +}; + +struct adv_monitor { + struct list_head patterns; + bool active; + __u16 handle; +}; + +#define HCI_MIN_ADV_MONITOR_HANDLE 1 +#define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32 +#define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16 + #define HCI_MAX_SHORT_NAME_LENGTH 10 /* Min encryption key size to match with SMP */ @@ -511,6 +530,9 @@ struct hci_dev { __u16 adv_instance_timeout; struct delayed_work adv_instance_expire; + struct idr adv_monitors_idr; + unsigned int adv_monitors_cnt; + __u8 irk[16]; __u32 rpa_timeout; struct delayed_work rpa_expired; @@ -1258,6 +1280,8 @@ int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); +void hci_adv_monitors_clear(struct hci_dev *hdev); + void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); void hci_init_sysfs(struct hci_dev *hdev); diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 8e01afb2ee8c..53aec32a5850 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -26,7 +26,6 @@ /* Bluetooth HCI core. */ #include -#include #include #include #include @@ -2996,6 +2995,12 @@ int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, return 0; } +/* This function requires the caller holds hdev->lock */ +void hci_adv_monitors_clear(struct hci_dev *hdev) +{ + idr_destroy(&hdev->adv_monitors_idr); +} + struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, bdaddr_t *bdaddr, u8 type) { @@ -3646,6 +3651,8 @@ int hci_register_dev(struct hci_dev *hdev) queue_work(hdev->req_workqueue, &hdev->power_on); + idr_init(&hdev->adv_monitors_idr); + return id; err_wqueue: @@ -3716,6 +3723,7 @@ void hci_unregister_dev(struct hci_dev *hdev) hci_smp_irks_clear(hdev); hci_remote_oob_data_clear(hdev); hci_adv_instances_clear(hdev); + hci_adv_monitors_clear(hdev); hci_bdaddr_list_clear(&hdev->le_white_list); hci_bdaddr_list_clear(&hdev->le_resolv_list); hci_conn_params_clear_all(hdev); diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index e409ff48e8e6..8aec7fbe9a38 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -37,6 +37,7 @@ #include "smp.h" #include "mgmt_util.h" #include "mgmt_config.h" +#include "msft.h" #define MGMT_VERSION 1 #define MGMT_REVISION 17 @@ -118,6 +119,7 @@ static const u16 mgmt_commands[] = { MGMT_OP_SET_DEF_RUNTIME_CONFIG, MGMT_OP_GET_DEVICE_FLAGS, MGMT_OP_SET_DEVICE_FLAGS, + MGMT_OP_READ_ADV_MONITOR_FEATURES, }; static const u16 mgmt_events[] = { @@ -3973,6 +3975,51 @@ static int set_device_flags(struct sock *sk, struct hci_dev *hdev, void *data, &cp->addr, sizeof(cp->addr)); } +static int read_adv_mon_features(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct adv_monitor *monitor = NULL; + struct mgmt_rp_read_adv_monitor_features *rp = NULL; + int handle; + size_t rp_size = 0; + __u32 supported = 0; + __u16 num_handles = 0; + __u16 handles[HCI_MAX_ADV_MONITOR_NUM_HANDLES]; + + BT_DBG("request for %s", hdev->name); + + hci_dev_lock(hdev); + + if (msft_get_features(hdev) & MSFT_FEATURE_MASK_LE_ADV_MONITOR) + supported |= MGMT_ADV_MONITOR_FEATURE_MASK_OR_PATTERNS; + + idr_for_each_entry(&hdev->adv_monitors_idr, monitor, handle) { + handles[num_handles++] = monitor->handle; + } + + hci_dev_unlock(hdev); + + rp_size = sizeof(*rp) + (num_handles * sizeof(u16)); + rp = kmalloc(rp_size, GFP_KERNEL); + if (!rp) + return -ENOMEM; + + /* Once controller-based monitoring is in place, the enabled_features + * should reflect the use. + */ + rp->supported_features = cpu_to_le32(supported); + rp->enabled_features = 0; + rp->max_num_handles = cpu_to_le16(HCI_MAX_ADV_MONITOR_NUM_HANDLES); + rp->max_num_patterns = HCI_MAX_ADV_MONITOR_NUM_PATTERNS; + rp->num_handles = cpu_to_le16(num_handles); + if (num_handles) + memcpy(&rp->handles, &handles, (num_handles * sizeof(u16))); + + return mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_READ_ADV_MONITOR_FEATURES, + MGMT_STATUS_SUCCESS, rp, rp_size); +} + static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status, u16 opcode, struct sk_buff *skb) { @@ -7441,6 +7488,7 @@ static const struct hci_mgmt_handler mgmt_handlers[] = { HCI_MGMT_VAR_LEN }, { get_device_flags, MGMT_GET_DEVICE_FLAGS_SIZE }, { set_device_flags, MGMT_SET_DEVICE_FLAGS_SIZE }, + { read_adv_mon_features, MGMT_READ_ADV_MONITOR_FEATURES_SIZE }, }; void mgmt_index_added(struct hci_dev *hdev) diff --git a/net/bluetooth/msft.c b/net/bluetooth/msft.c index d6c4e6b5ae77..8579bfeb2836 100644 --- a/net/bluetooth/msft.c +++ b/net/bluetooth/msft.c @@ -139,3 +139,10 @@ void msft_vendor_evt(struct hci_dev *hdev, struct sk_buff *skb) bt_dev_dbg(hdev, "MSFT vendor event %u", event); } + +__u64 msft_get_features(struct hci_dev *hdev) +{ + struct msft_data *msft = hdev->msft_data; + + return msft ? msft->features : 0; +} diff --git a/net/bluetooth/msft.h b/net/bluetooth/msft.h index 5aa9130e1f8a..e9c478e890b8 100644 --- a/net/bluetooth/msft.h +++ b/net/bluetooth/msft.h @@ -3,16 +3,25 @@ * Copyright (C) 2020 Google Corporation */ +#define MSFT_FEATURE_MASK_BREDR_RSSI_MONITOR BIT(0) +#define MSFT_FEATURE_MASK_LE_CONN_RSSI_MONITOR BIT(1) +#define MSFT_FEATURE_MASK_LE_ADV_RSSI_MONITOR BIT(2) +#define MSFT_FEATURE_MASK_LE_ADV_MONITOR BIT(3) +#define MSFT_FEATURE_MASK_CURVE_VALIDITY BIT(4) +#define MSFT_FEATURE_MASK_CONCURRENT_ADV_MONITOR BIT(5) + #if IS_ENABLED(CONFIG_BT_MSFTEXT) void msft_do_open(struct hci_dev *hdev); void msft_do_close(struct hci_dev *hdev); void msft_vendor_evt(struct hci_dev *hdev, struct sk_buff *skb); +__u64 msft_get_features(struct hci_dev *hdev); #else static inline void msft_do_open(struct hci_dev *hdev) {} static inline void msft_do_close(struct hci_dev *hdev) {} static inline void msft_vendor_evt(struct hci_dev *hdev, struct sk_buff *skb) {} +static inline __u64 msft_get_features(struct hci_dev *hdev) { return 0; } #endif