From patchwork Thu Dec 3 10:29:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Archie Pusaka X-Patchwork-Id: 11948355 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=-26.2 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 74D28C83016 for ; Thu, 3 Dec 2020 10:31:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 301C721527 for ; Thu, 3 Dec 2020 10:31:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388820AbgLCKbI (ORCPT ); Thu, 3 Dec 2020 05:31:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59114 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388803AbgLCKbH (ORCPT ); Thu, 3 Dec 2020 05:31:07 -0500 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63445C08E85F for ; Thu, 3 Dec 2020 02:30:02 -0800 (PST) Received: by mail-yb1-xb4a.google.com with SMTP id x129so2058816ybg.12 for ; Thu, 03 Dec 2020 02:30:02 -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=u7LA7TI+m014MHf1r0Np3Fnca+wIIXRyz0e4OSJVybk=; b=AiGnGEISBW9febMfT350l4B+LEsYU2Vyi85aZunXUCPDDqmpy++ZIaMeBaozY3vefp Yd6bISUo2tP37vay5KdrpTBhCZYbPCmzDUaqnIbKKBsb8IQTjU1ILiOnKWzeS2VOxkha gg+h+MEExNYHxsmdhXejQX8I3tiHLO6yAV5jJHVJsNAQvjut+hehTYUy7gpVyhJGtGCi lHi8797dsw4c7ExkNcWfaXMM2F23UjK/XNKgh0z0fftULr0r3g0wUMufJMmAk6gv+ZUo VLLSfgKgOruZPdUq4B0cNPRavehf+5Vd6W1xmPCQ/jqUl6OE/ZSvd6rBETAqQ73nn94H 9O8g== 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=u7LA7TI+m014MHf1r0Np3Fnca+wIIXRyz0e4OSJVybk=; b=mrO7BAm+W7G5dKNu77VjtPb2qt9aBaDZ6EMTIVLGTSuTczHpmNJ+52iZ6K3OVRhy8v AZu0r4XCzmhce7g+Bed8XPuTz0VXn9Jfzn/rapP6S5hXRCD/AvBPgdceG7FG84bgac5M sOM9XXzRiMQ2BRgWjXqlXb3GSc6y9+GgerWa2DPn31uBrQjyylv8rHm39kkKzhEnMd2s MJXLVhvJ9XVd1YXy+Rk2Z3y8AMnDwigb1rf+FO4D+HHXrPO8Z8m1pIlrfD8kHA4iDtz2 QXg3ZHW1+1dtCHFqV0l8/qQAk0otUlvzWLDPabcExssOhGBUqCLKyHPBljOVst7N7C78 LpIw== X-Gm-Message-State: AOAM531hXytJTxLiOF6Uo5asF4xIgFmKdjDIwiPYckXqDmEjz5+vfG+I Kuc+xIjcMU4pclBfWe+NOi7AbirdCm23 X-Google-Smtp-Source: ABdhPJxeZHDgb1NLZtyJBmiArkVC0Zo0t3zCQ1zCXBGzL40EwWZRXoa6KOi3JZO1c11HK67x/1NsGn1lssIf 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:a25:ab72:: with SMTP id u105mr3621729ybi.406.1606991401633; Thu, 03 Dec 2020 02:30:01 -0800 (PST) Date: Thu, 3 Dec 2020 18:29:33 +0800 In-Reply-To: <20201203102936.4049556-1-apusaka@google.com> Message-Id: <20201203182903.v1.3.I2bdb3d9953a91dc7865da6e57166260b3a75c146@changeid> Mime-Version: 1.0 References: <20201203102936.4049556-1-apusaka@google.com> X-Mailer: git-send-email 2.29.2.454.gaff20da3a2-goog Subject: [PATCH v1 3/5] Bluetooth: advmon offload MSFT remove monitor From: Archie Pusaka To: linux-bluetooth , Marcel Holtmann Cc: CrosBT Upstreaming , Archie Pusaka , Miao-chen Chou , Yun-Hao Chung , "David S. Miller" , Jakub Kicinski , Johan Hedberg , 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 Implements the monitor removal functionality for advertising monitor offloading to MSFT controllers. Supply handle = 0 to remove all monitors. Signed-off-by: Archie Pusaka Reviewed-by: Miao-chen Chou Reviewed-by: Yun-Hao Chung --- include/net/bluetooth/hci_core.h | 8 +- net/bluetooth/hci_core.c | 119 +++++++++++++++++++++++------ net/bluetooth/mgmt.c | 109 +++++++++++++++++++++----- net/bluetooth/msft.c | 127 ++++++++++++++++++++++++++++++- net/bluetooth/msft.h | 9 +++ 5 files changed, 322 insertions(+), 50 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 275061a1b670..0a211cd52fdb 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1311,11 +1311,13 @@ 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_free_adv_monitor(struct adv_monitor *monitor); +void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); int hci_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status); +int hci_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status); bool hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor, int *err); -int hci_remove_adv_monitor(struct hci_dev *hdev, u16 handle); +bool hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle, int *err); +bool hci_remove_all_adv_monitor(struct hci_dev *hdev, int *err); bool hci_is_adv_monitoring(struct hci_dev *hdev); int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); @@ -1792,8 +1794,10 @@ void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, u8 instance); void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, u8 instance); +void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); int mgmt_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status); +int mgmt_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status); u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, u16 to_multiplier); diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 7f70812dde15..70bb2a11d9b1 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3012,12 +3012,15 @@ void hci_adv_monitors_clear(struct hci_dev *hdev) int handle; idr_for_each_entry(&hdev->adv_monitors_idr, monitor, handle) - hci_free_adv_monitor(monitor); + hci_free_adv_monitor(hdev, monitor); idr_destroy(&hdev->adv_monitors_idr); } -void hci_free_adv_monitor(struct adv_monitor *monitor) +/* Frees the monitor structure and do some bookkeepings. + * This function requires the caller holds hdev->lock. + */ +void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor) { struct adv_pattern *pattern; struct adv_pattern *tmp; @@ -3025,8 +3028,18 @@ void hci_free_adv_monitor(struct adv_monitor *monitor) if (!monitor) return; - list_for_each_entry_safe(pattern, tmp, &monitor->patterns, list) + list_for_each_entry_safe(pattern, tmp, &monitor->patterns, list) { + list_del(&pattern->list); kfree(pattern); + } + + if (monitor->handle) + idr_remove(&hdev->adv_monitors_idr, monitor->handle); + + if (monitor->state != ADV_MONITOR_STATE_NOT_REGISTERED) { + hdev->adv_monitors_cnt--; + mgmt_adv_monitor_removed(hdev, monitor->handle); + } kfree(monitor); } @@ -3036,6 +3049,11 @@ int hci_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status) return mgmt_add_adv_patterns_monitor_complete(hdev, status); } +int hci_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status) +{ + return mgmt_remove_adv_monitor_complete(hdev, status); +} + /* Assigns handle to a monitor, and if offloading is supported and power is on, * also attempts to forward the request to the controller. * Returns true if request is forwarded (result is pending), false otherwise. @@ -3082,39 +3100,94 @@ bool hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor, return (*err == 0); } -static int free_adv_monitor(int id, void *ptr, void *data) +/* Attempts to tell the controller and free the monitor. If somehow the + * controller doesn't have a corresponding handle, remove anyway. + * Returns true if request is forwarded (result is pending), false otherwise. + * This function requires the caller holds hdev->lock. + */ +static bool hci_remove_adv_monitor(struct hci_dev *hdev, + struct adv_monitor *monitor, + u16 handle, int *err) { - struct hci_dev *hdev = data; - struct adv_monitor *monitor = ptr; + *err = 0; - idr_remove(&hdev->adv_monitors_idr, monitor->handle); - hci_free_adv_monitor(monitor); - hdev->adv_monitors_cnt--; + switch (hci_get_adv_monitor_offload_ext(hdev)) { + case HCI_ADV_MONITOR_EXT_NONE: /* also goes here when powered off */ + goto free_monitor; + case HCI_ADV_MONITOR_EXT_MSFT: + *err = msft_remove_monitor(hdev, monitor, handle); + break; + } - return 0; + /* In case no matching handle registered, just free the monitor */ + if (*err == -ENOENT) + goto free_monitor; + + return (*err == 0); + +free_monitor: + if (*err == -ENOENT) + bt_dev_warn(hdev, "Removing monitor with no matching handle %d", + monitor->handle); + hci_free_adv_monitor(hdev, monitor); + + *err = 0; + return false; } -/* This function requires the caller holds hdev->lock */ -int hci_remove_adv_monitor(struct hci_dev *hdev, u16 handle) +/* Returns true if request is forwarded (result is pending), false otherwise. + * This function requires the caller holds hdev->lock. + */ +bool hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle, int *err) +{ + struct adv_monitor *monitor = idr_find(&hdev->adv_monitors_idr, handle); + bool pending; + + if (!monitor) { + *err = -EINVAL; + return false; + } + + pending = hci_remove_adv_monitor(hdev, monitor, handle, err); + if (!*err && !pending) + hci_update_background_scan(hdev); + + BT_DBG("%s remove monitor handle %d, status %d, %spending", + hdev->name, handle, *err, pending ? "" : "not "); + + return pending; +} + +/* Returns true if request is forwarded (result is pending), false otherwise. + * This function requires the caller holds hdev->lock. + */ +bool hci_remove_all_adv_monitor(struct hci_dev *hdev, int *err) { struct adv_monitor *monitor; + int idr_next_id = 0; + bool pending = false; + bool update = false; + + *err = 0; - if (handle) { - monitor = idr_find(&hdev->adv_monitors_idr, handle); + while (!*err && !pending) { + monitor = idr_get_next(&hdev->adv_monitors_idr, &idr_next_id); if (!monitor) - return -ENOENT; + break; - idr_remove(&hdev->adv_monitors_idr, monitor->handle); - hci_free_adv_monitor(monitor); - hdev->adv_monitors_cnt--; - } else { - /* Remove all monitors if handle is 0. */ - idr_for_each(&hdev->adv_monitors_idr, &free_adv_monitor, hdev); + pending = hci_remove_adv_monitor(hdev, monitor, 0, err); + + if (!*err && !pending) + update = true; } - hci_update_background_scan(hdev); + if (update) + hci_update_background_scan(hdev); - return 0; + BT_DBG("%s remove all monitors status %d, %spending", + hdev->name, *err, pending ? "" : "not "); + + return pending; } /* This function requires the caller holds hdev->lock */ diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index d32761f64360..8af0ff10ee78 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -4149,14 +4149,24 @@ static void mgmt_adv_monitor_added(struct sock *sk, struct hci_dev *hdev, mgmt_event(MGMT_EV_ADV_MONITOR_ADDED, hdev, &ev, sizeof(ev), sk); } -static void mgmt_adv_monitor_removed(struct sock *sk, struct hci_dev *hdev, - u16 handle) +void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle) { - struct mgmt_ev_adv_monitor_added ev; + struct mgmt_ev_adv_monitor_removed ev; + struct mgmt_pending_cmd *cmd; + struct sock *sk_skip = NULL; + struct mgmt_cp_remove_adv_monitor *cp; + + cmd = pending_find(MGMT_OP_REMOVE_ADV_MONITOR, hdev); + if (cmd) { + cp = cmd->param; + + if (cp->monitor_handle) + sk_skip = cmd->sk; + } ev.monitor_handle = cpu_to_le16(handle); - mgmt_event(MGMT_EV_ADV_MONITOR_REMOVED, hdev, &ev, sizeof(ev), sk); + mgmt_event(MGMT_EV_ADV_MONITOR_REMOVED, hdev, &ev, sizeof(ev), sk_skip); } static int read_adv_mon_features(struct sock *sk, struct hci_dev *hdev, @@ -4358,48 +4368,105 @@ static int add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, return 0; unlock: + hci_free_adv_monitor(hdev, m); hci_dev_unlock(hdev); - hci_free_adv_monitor(m); return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADV_PATTERNS_MONITOR, status); } +int mgmt_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status) +{ + struct mgmt_rp_remove_adv_monitor rp; + struct mgmt_cp_remove_adv_monitor *cp; + struct mgmt_pending_cmd *cmd; + int err = 0; + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_REMOVE_ADV_MONITOR, hdev); + if (!cmd) + goto done; + + cp = cmd->param; + rp.monitor_handle = cp->monitor_handle; + + if (!status) + hci_update_background_scan(hdev); + + err = mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, + mgmt_status(status), &rp, sizeof(rp)); + mgmt_pending_remove(cmd); + +done: + hci_dev_unlock(hdev); + bt_dev_dbg(hdev, "remove monitor %d complete, status %d", + rp.monitor_handle, status); + + return err; +} + static int remove_adv_monitor(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) { struct mgmt_cp_remove_adv_monitor *cp = data; struct mgmt_rp_remove_adv_monitor rp; - unsigned int prev_adv_monitors_cnt; - u16 handle; - int err; + struct mgmt_pending_cmd *cmd; + u16 handle = __le16_to_cpu(cp->monitor_handle); + int err, status; + bool pending; BT_DBG("request for %s", hdev->name); + rp.monitor_handle = cp->monitor_handle; hci_dev_lock(hdev); - handle = __le16_to_cpu(cp->monitor_handle); - prev_adv_monitors_cnt = hdev->adv_monitors_cnt; + if (pending_find(MGMT_OP_SET_LE, hdev) || + pending_find(MGMT_OP_REMOVE_ADV_MONITOR, hdev) || + pending_find(MGMT_OP_ADD_ADV_PATTERNS_MONITOR, hdev)) { + status = MGMT_STATUS_BUSY; + goto unlock; + } - err = hci_remove_adv_monitor(hdev, handle); - if (err == -ENOENT) { - err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADV_MONITOR, - MGMT_STATUS_INVALID_INDEX); + cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_ADV_MONITOR, hdev, data, len); + if (!cmd) { + status = MGMT_STATUS_NO_RESOURCES; goto unlock; } - if (hdev->adv_monitors_cnt < prev_adv_monitors_cnt) - mgmt_adv_monitor_removed(sk, hdev, handle); + if (handle) + pending = hci_remove_single_adv_monitor(hdev, handle, &err); + else + pending = hci_remove_all_adv_monitor(hdev, &err); - hci_dev_unlock(hdev); + if (err) { + mgmt_pending_remove(cmd); - rp.monitor_handle = cp->monitor_handle; + if (err == -ENOENT) + status = MGMT_STATUS_INVALID_INDEX; + else + status = MGMT_STATUS_FAILED; + + goto unlock; + } + + /* monitor can be removed without forwarding request to controller */ + if (!pending) { + mgmt_pending_remove(cmd); + hci_dev_unlock(hdev); - return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_ADV_MONITOR, - MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); + return mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_REMOVE_ADV_MONITOR, + MGMT_STATUS_SUCCESS, + &rp, sizeof(rp)); + } + + hci_dev_unlock(hdev); + return 0; unlock: hci_dev_unlock(hdev); - return err; + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADV_MONITOR, + status); } static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status, diff --git a/net/bluetooth/msft.c b/net/bluetooth/msft.c index e4b8fe71b9c3..f5aa0e3b1b9b 100644 --- a/net/bluetooth/msft.c +++ b/net/bluetooth/msft.c @@ -58,6 +58,17 @@ struct msft_rp_le_monitor_advertisement { __u8 handle; } __packed; +#define MSFT_OP_LE_CANCEL_MONITOR_ADVERTISEMENT 0x04 +struct msft_cp_le_cancel_monitor_advertisement { + __u8 sub_opcode; + __u8 handle; +} __packed; + +struct msft_rp_le_cancel_monitor_advertisement { + __u8 status; + __u8 sub_opcode; +} __packed; + struct msft_monitor_advertisement_handle_data { __u8 msft_handle; __u16 mgmt_handle; @@ -70,6 +81,7 @@ struct msft_data { __u8 *evt_prefix; struct list_head handle_map; __u16 pending_add_handle; + __u16 pending_remove_handle; }; bool msft_monitor_supported(struct hci_dev *hdev) @@ -205,6 +217,26 @@ __u64 msft_get_features(struct hci_dev *hdev) return msft ? msft->features : 0; } +/* is_mgmt = true matches the handle exposed to userspace via mgmt. + * is_mgmt = false matches the handle used by the msft controller. + * This function requires the caller holds hdev->lock + */ +static struct msft_monitor_advertisement_handle_data *msft_find_handle_data + (struct hci_dev *hdev, u16 handle, bool is_mgmt) +{ + struct msft_monitor_advertisement_handle_data *entry; + struct msft_data *msft = hdev->msft_data; + + list_for_each_entry(entry, &msft->handle_map, list) { + if (is_mgmt && entry->mgmt_handle == handle) + return entry; + if (!is_mgmt && entry->msft_handle == handle) + return entry; + } + + return NULL; +} + static void msft_le_monitor_advertisement_cb(struct hci_dev *hdev, u8 status, u16 opcode, struct sk_buff *skb) @@ -247,16 +279,71 @@ static void msft_le_monitor_advertisement_cb(struct hci_dev *hdev, monitor->state = ADV_MONITOR_STATE_OFFLOADED; unlock: - if (status && monitor) { - idr_remove(&hdev->adv_monitors_idr, monitor->handle); - hci_free_adv_monitor(monitor); - } + if (status && monitor) + hci_free_adv_monitor(hdev, monitor); hci_dev_unlock(hdev); hci_add_adv_patterns_monitor_complete(hdev, status); } +static void msft_le_cancel_monitor_advertisement_cb(struct hci_dev *hdev, + u8 status, u16 opcode, + struct sk_buff *skb) +{ + struct msft_cp_le_cancel_monitor_advertisement *cp; + struct msft_rp_le_cancel_monitor_advertisement *rp; + struct adv_monitor *monitor; + struct msft_monitor_advertisement_handle_data *handle_data; + struct msft_data *msft = hdev->msft_data; + int err; + bool pending; + + if (status) + goto done; + + rp = (struct msft_rp_le_cancel_monitor_advertisement *)skb->data; + if (skb->len < sizeof(*rp)) { + status = HCI_ERROR_UNSPECIFIED; + goto done; + } + + hci_dev_lock(hdev); + + cp = hci_sent_cmd_data(hdev, hdev->msft_opcode); + handle_data = msft_find_handle_data(hdev, cp->handle, false); + + if (handle_data) { + monitor = idr_find(&hdev->adv_monitors_idr, + handle_data->mgmt_handle); + if (monitor) + hci_free_adv_monitor(hdev, monitor); + + list_del(&handle_data->list); + kfree(handle_data); + } + + /* If remove all monitors is required, we need to continue the process + * here because the earlier it was paused when waiting for the + * response from controller. + */ + if (msft->pending_remove_handle == 0) { + pending = hci_remove_all_adv_monitor(hdev, &err); + if (pending) { + hci_dev_unlock(hdev); + return; + } + + if (err) + status = HCI_ERROR_UNSPECIFIED; + } + + hci_dev_unlock(hdev); + +done: + hci_remove_adv_monitor_complete(hdev, status); +} + static bool msft_monitor_rssi_valid(struct adv_monitor *monitor) { struct adv_rssi_thresholds *r = &monitor->rssi; @@ -346,3 +433,35 @@ int msft_add_monitor_pattern(struct hci_dev *hdev, struct adv_monitor *monitor) return err; } + +/* This function requires the caller holds hdev->lock */ +int msft_remove_monitor(struct hci_dev *hdev, struct adv_monitor *monitor, + u16 handle) +{ + struct msft_cp_le_cancel_monitor_advertisement cp; + struct msft_monitor_advertisement_handle_data *handle_data; + struct hci_request req; + struct msft_data *msft = hdev->msft_data; + int err = 0; + + if (!msft) + return -EOPNOTSUPP; + + handle_data = msft_find_handle_data(hdev, monitor->handle, true); + + /* If no matched handle, just remove without telling controller */ + if (!handle_data) + return -ENOENT; + + cp.sub_opcode = MSFT_OP_LE_CANCEL_MONITOR_ADVERTISEMENT; + cp.handle = handle_data->msft_handle; + + hci_req_init(&req, hdev); + hci_req_add(&req, hdev->msft_opcode, sizeof(cp), &cp); + err = hci_req_run_skb(&req, msft_le_cancel_monitor_advertisement_cb); + + if (!err) + msft->pending_remove_handle = handle; + + return err; +} diff --git a/net/bluetooth/msft.h b/net/bluetooth/msft.h index 0ac9b15322b1..9f9a11f90b0c 100644 --- a/net/bluetooth/msft.h +++ b/net/bluetooth/msft.h @@ -18,6 +18,8 @@ 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); int msft_add_monitor_pattern(struct hci_dev *hdev, struct adv_monitor *monitor); +int msft_remove_monitor(struct hci_dev *hdev, struct adv_monitor *monitor, + u16 handle); #else @@ -36,4 +38,11 @@ static inline int msft_add_monitor_pattern(struct hci_dev *hdev, return -EOPNOTSUPP; } +static inline bool msft_remove_monitor(struct hci_dev *hdev, + struct adv_monitor *monitor, + u16 handle) +{ + return -EOPNOTSUPP; +} + #endif