From patchwork Wed Dec 16 04:33:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Archie Pusaka X-Patchwork-Id: 11976315 X-Patchwork-Delegate: kuba@kernel.org 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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL 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 22BB1C2BBCA for ; Wed, 16 Dec 2020 04:34:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E6EA32311F for ; Wed, 16 Dec 2020 04:34:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725806AbgLPEee (ORCPT ); Tue, 15 Dec 2020 23:34:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33214 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725792AbgLPEee (ORCPT ); Tue, 15 Dec 2020 23:34:34 -0500 Received: from mail-qk1-x749.google.com (mail-qk1-x749.google.com [IPv6:2607:f8b0:4864:20::749]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15189C06138C for ; Tue, 15 Dec 2020 20:33:45 -0800 (PST) Received: by mail-qk1-x749.google.com with SMTP id x74so16912926qkb.12 for ; Tue, 15 Dec 2020 20:33:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=sSGCRfIrajbqPNzfreTza6Lc9wD5ZtP8oZgretb/+DM=; b=QbALSltyPlKo3C5JA8gjwQ2ySpq0sDuMLog44XD4EByGpYUQqk54jzJRDhPW0d6TzH 3RWwAa9gVycJaTa3g9OWGnOihqrUFYGkAII2qioKOfOf/WCtFxVJg8YAlm0a3YJbeE/6 o4uJZMUDZdUlfIbelKbZ2g0u3whBPUBYINEzrMxEJyCDEG8CE16wUuT4s/lyN/cg7Apw rU2NMUYA3PbQrUpC2kALIXew2KyTQw/V1pyTRT75Ly4j1CnVwH0o+lPFl0ZSjKi/gILm Tbv8QWc8O00WorA/5q4HfTvU4g7CPCZAlXJNJVgJfzWAo7pQwE9CUjdD7W3tEh1tt7GP e7Sg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=sSGCRfIrajbqPNzfreTza6Lc9wD5ZtP8oZgretb/+DM=; b=KnDBfd4sPoXYZ3gb9ofXrGrnq2kfJ7Ohb/LT972EFycfG2wO2UqHSoaM1+R92feJNj iWqozw2NJGr31vno5hI1X+xT//94H03Lfc5DoyzTfSWmCYUr0Dx+Ygy48CBykUTbPtWH y5zgLIaKhO3vSH1va6JDbW4HBRn6AdLZxI5Q5PE+DlO0pBZIp8UpTiy4a79s6HMbY7xj S1N2sCsPAT9SankQ7Ni4x5M6bLydaGgAQ817IuvUvfVoz30oe4cFc3YVujDTD0xLURpG OLPHtC8+w4L85m1n7xK0GaqsYXFmuEAi4Ab7+cc2Q1oJg09PZJa8IQJ91mDydRVeN8nH VdDg== X-Gm-Message-State: AOAM530wamxN7rOc0nFM9Gvul6iSNl22nHlga1miJIbQQkpy7E/zAbvy ZW1fmSjWoBh9nsTHeMqyVYQgkMg63aLy X-Google-Smtp-Source: ABdhPJwJpg8BnPdyePZBsj6FDcUgi3uNiDlvoY5TbDfg6ei7ttK58yTCR5DAhGjvQH/J53kyspTVng0J7HF9 Sender: "apusaka via sendgmr" X-Received: from apusaka-p920.tpe.corp.google.com ([2401:fa00:1:b:f693:9fff:fef4:2347]) (user=apusaka job=sendgmr) by 2002:a0c:f1ce:: with SMTP id u14mr20713675qvl.24.1608093224303; Tue, 15 Dec 2020 20:33:44 -0800 (PST) Date: Wed, 16 Dec 2020 12:33:31 +0800 In-Reply-To: <20201216043335.2185278-1-apusaka@google.com> Message-Id: <20201216123317.v3.1.I92d2e2a87419730d60136680cbe27636baf94b15@changeid> Mime-Version: 1.0 References: <20201216043335.2185278-1-apusaka@google.com> X-Mailer: git-send-email 2.29.2.684.gfbc64c5ab5-goog Subject: [PATCH v3 1/5] Bluetooth: advmon offload MSFT add rssi support From: Archie Pusaka To: linux-bluetooth , Marcel Holtmann Cc: CrosBT Upstreaming , Archie Pusaka , Manish Mandlik , Miao-chen Chou , Yun-Hao Chung , "David S. Miller" , Jakub Kicinski , Johan Hedberg , Luiz Augusto von Dentz , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Archie Pusaka MSFT needs rssi parameter for monitoring advertisement packet, therefore we should supply them from mgmt. This adds a new opcode to add advertisement monitor with rssi parameters. Signed-off-by: Archie Pusaka Reviewed-by: Manish Mandlik Reviewed-by: Miao-chen Chou Reviewed-by: Yun-Hao Chung --- Changes in v3: * Flips the order of rssi and pattern_count on mgmt struct Changes in v2: * Add a new opcode instead of modifying an existing one include/net/bluetooth/hci_core.h | 9 +++ include/net/bluetooth/mgmt.h | 16 ++++++ net/bluetooth/mgmt.c | 99 ++++++++++++++++++++++++-------- 3 files changed, 101 insertions(+), 23 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 677a8c50b2ad..8b7cf3620938 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -250,8 +250,17 @@ struct adv_pattern { __u8 value[HCI_MAX_AD_LENGTH]; }; +struct adv_rssi_thresholds { + __s8 low_threshold; + __s8 high_threshold; + __u16 low_threshold_timeout; + __u16 high_threshold_timeout; + __u8 sampling_period; +}; + struct adv_monitor { struct list_head patterns; + struct adv_rssi_thresholds rssi; bool active; __u16 handle; }; diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h index f9a6638e20b3..9917b911a4fb 100644 --- a/include/net/bluetooth/mgmt.h +++ b/include/net/bluetooth/mgmt.h @@ -821,6 +821,22 @@ struct mgmt_rp_add_ext_adv_data { __u8 instance; } __packed; +struct mgmt_adv_rssi_thresholds { + __s8 high_threshold; + __le16 high_threshold_timeout; + __s8 low_threshold; + __le16 low_threshold_timeout; + __u8 sampling_period; +} __packed; + +#define MGMT_OP_ADD_ADV_PATTERNS_MONITOR_RSSI 0x0056 +struct mgmt_cp_add_adv_patterns_monitor_rssi { + struct mgmt_adv_rssi_thresholds rssi; + __u8 pattern_count; + struct mgmt_adv_pattern patterns[]; +} __packed; +#define MGMT_ADD_ADV_PATTERNS_MONITOR_RSSI_SIZE 8 + #define MGMT_EV_CMD_COMPLETE 0x0001 struct mgmt_ev_cmd_complete { __le16 opcode; diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index fa0f7a4a1d2f..cd574054aa39 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -124,6 +124,7 @@ static const u16 mgmt_commands[] = { MGMT_OP_REMOVE_ADV_MONITOR, MGMT_OP_ADD_EXT_ADV_PARAMS, MGMT_OP_ADD_EXT_ADV_DATA, + MGMT_OP_ADD_ADV_PATTERNS_MONITOR_RSSI, }; static const u16 mgmt_events[] = { @@ -4225,22 +4226,40 @@ static int read_adv_mon_features(struct sock *sk, struct hci_dev *hdev, return err; } -static int add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, - void *data, u16 len) +static int __add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len, u16 op) { - struct mgmt_cp_add_adv_patterns_monitor *cp = data; + struct mgmt_cp_add_adv_patterns_monitor *cp = NULL; + struct mgmt_cp_add_adv_patterns_monitor_rssi *cp_rssi = NULL; struct mgmt_rp_add_adv_patterns_monitor rp; + struct mgmt_adv_rssi_thresholds *rssi = NULL; + struct mgmt_adv_pattern *patterns = NULL; struct adv_monitor *m = NULL; struct adv_pattern *p = NULL; unsigned int mp_cnt = 0, prev_adv_monitors_cnt; __u8 cp_ofst = 0, cp_len = 0; int err, i; + u8 pattern_count; + u16 expected_len; BT_DBG("request for %s", hdev->name); - if (len <= sizeof(*cp) || cp->pattern_count == 0) { - err = mgmt_cmd_status(sk, hdev->id, - MGMT_OP_ADD_ADV_PATTERNS_MONITOR, + if (op == MGMT_OP_ADD_ADV_PATTERNS_MONITOR_RSSI) { + cp_rssi = data; + pattern_count = cp_rssi->pattern_count; + rssi = &cp_rssi->rssi; + patterns = cp_rssi->patterns; + expected_len = sizeof(*cp_rssi) + + pattern_count * sizeof(*patterns); + } else { + cp = data; + pattern_count = cp->pattern_count; + patterns = cp->patterns; + expected_len = sizeof(*cp) + pattern_count * sizeof(*patterns); + } + + if (len != expected_len || pattern_count == 0) { + err = mgmt_cmd_status(sk, hdev->id, op, MGMT_STATUS_INVALID_PARAMS); goto failed; } @@ -4254,21 +4273,40 @@ static int add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, INIT_LIST_HEAD(&m->patterns); m->active = false; - for (i = 0; i < cp->pattern_count; i++) { + if (rssi) { + m->rssi.low_threshold = rssi->low_threshold; + m->rssi.low_threshold_timeout = + __le16_to_cpu(rssi->low_threshold_timeout); + m->rssi.high_threshold = rssi->high_threshold; + m->rssi.high_threshold_timeout = + __le16_to_cpu(rssi->high_threshold_timeout); + m->rssi.sampling_period = rssi->sampling_period; + } else { + /* Default values. These numbers are the least constricting + * parameters for MSFT API to work, so it behaves as if there + * are no rssi parameter to consider. May need to be changed + * if other API are to be supported. + */ + m->rssi.low_threshold = -127; + m->rssi.low_threshold_timeout = 60; + m->rssi.high_threshold = -127; + m->rssi.high_threshold_timeout = 0; + m->rssi.sampling_period = 0; + } + + for (i = 0; i < pattern_count; i++) { if (++mp_cnt > HCI_MAX_ADV_MONITOR_NUM_PATTERNS) { - err = mgmt_cmd_status(sk, hdev->id, - MGMT_OP_ADD_ADV_PATTERNS_MONITOR, + err = mgmt_cmd_status(sk, hdev->id, op, MGMT_STATUS_INVALID_PARAMS); goto failed; } - cp_ofst = cp->patterns[i].offset; - cp_len = cp->patterns[i].length; + cp_ofst = patterns[i].offset; + cp_len = patterns[i].length; if (cp_ofst >= HCI_MAX_AD_LENGTH || cp_len > HCI_MAX_AD_LENGTH || (cp_ofst + cp_len) > HCI_MAX_AD_LENGTH) { - err = mgmt_cmd_status(sk, hdev->id, - MGMT_OP_ADD_ADV_PATTERNS_MONITOR, + err = mgmt_cmd_status(sk, hdev->id, op, MGMT_STATUS_INVALID_PARAMS); goto failed; } @@ -4279,18 +4317,17 @@ static int add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, goto failed; } - p->ad_type = cp->patterns[i].ad_type; - p->offset = cp->patterns[i].offset; - p->length = cp->patterns[i].length; - memcpy(p->value, cp->patterns[i].value, p->length); + p->ad_type = patterns[i].ad_type; + p->offset = patterns[i].offset; + p->length = patterns[i].length; + memcpy(p->value, patterns[i].value, p->length); INIT_LIST_HEAD(&p->list); list_add(&p->list, &m->patterns); } - if (mp_cnt != cp->pattern_count) { - err = mgmt_cmd_status(sk, hdev->id, - MGMT_OP_ADD_ADV_PATTERNS_MONITOR, + if (mp_cnt != pattern_count) { + err = mgmt_cmd_status(sk, hdev->id, op, MGMT_STATUS_INVALID_PARAMS); goto failed; } @@ -4302,8 +4339,7 @@ static int add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, err = hci_add_adv_monitor(hdev, m); if (err) { if (err == -ENOSPC) { - mgmt_cmd_status(sk, hdev->id, - MGMT_OP_ADD_ADV_PATTERNS_MONITOR, + mgmt_cmd_status(sk, hdev->id, op, MGMT_STATUS_NO_RESOURCES); } goto unlock; @@ -4316,7 +4352,7 @@ static int add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, rp.monitor_handle = cpu_to_le16(m->handle); - return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_ADV_PATTERNS_MONITOR, + return mgmt_cmd_complete(sk, hdev->id, op, MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); unlock: @@ -4327,6 +4363,20 @@ static int add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, return err; } +static int add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + return __add_adv_patterns_monitor(sk, hdev, data, len, + MGMT_OP_ADD_ADV_PATTERNS_MONITOR); +} + +static int add_adv_patterns_monitor_rssi(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + return __add_adv_patterns_monitor(sk, hdev, data, len, + MGMT_OP_ADD_ADV_PATTERNS_MONITOR_RSSI); +} + static int remove_adv_monitor(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) { @@ -8234,6 +8284,9 @@ static const struct hci_mgmt_handler mgmt_handlers[] = { HCI_MGMT_VAR_LEN }, { add_ext_adv_data, MGMT_ADD_EXT_ADV_DATA_SIZE, HCI_MGMT_VAR_LEN }, + { add_adv_patterns_monitor_rssi, + MGMT_ADD_ADV_PATTERNS_MONITOR_RSSI_SIZE, + HCI_MGMT_VAR_LEN }, }; void mgmt_index_added(struct hci_dev *hdev)