From patchwork Tue May 24 20:14:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manish Mandlik X-Patchwork-Id: 577017 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27772C433F5 for ; Tue, 24 May 2022 20:14:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238285AbiEXUOj (ORCPT ); Tue, 24 May 2022 16:14:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47596 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241445AbiEXUOc (ORCPT ); Tue, 24 May 2022 16:14:32 -0400 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 B5E6A82165 for ; Tue, 24 May 2022 13:14:30 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id l72-20020a25254b000000b00651f60988dfso2998372ybl.11 for ; Tue, 24 May 2022 13:14:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=21cS6HrQlto5xKVBaRyielngkbD0PbPrl0cGSh2e7BE=; b=VVa8TWwbnWP3kVBlGBWhzeLb1P+zhQIoAx3I1uI5oV5drao02Vtq2WN65Hq9Trsnfv FDqkv0aNyxOqGee0MwC1kQ5KPR1qhJtQYMTLVIaZRjBCEvSg3pwDnEl4j7j9l5c4uo1E iNWRCuihAWFvP/vZZ5M4AGcTanLYNduxuIaLINLlN/795cHxqpQrm8Po6C063XYtgWtZ u+f3QtWVXCEC5gsZQ9eXiot5jt8A8z2q3oQiHZZ8vViZ61iqXUTXNe6fhvXu7HUxeLcz BRRZE+PUJM9ZwqDajBr5wUP/G6+haBU0pylaBBzo9PLnPQ111KHKetiKBRM0dWJ1vNEf FUYQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=21cS6HrQlto5xKVBaRyielngkbD0PbPrl0cGSh2e7BE=; b=5zMmEqbuJakWNTz6kV5I7PFD2E2XiCWe7GN68Ggk8m0X3NdaQrGsCD/gjC/J4Xfyhi bZCvY6vJzXUBNOZn7QfAxYcm6TNTVBe86d/kPsyoGpdKV2+q8M7+Q1XCJIQJio8fTJA2 BnRlGxeSODsR9ll5mUb4tykM8KmxDR0areOMVWTdkp9XwC9YC/LugsFbNi1K4QeDFM0Q O3+BXbY+CFfNYMUJMmz4AVxXZRm6tRmPWxn8IlSK1CORoFtOwPAfrEiOK+XjkYjbHIpW 8MUaFCNhd9TUnaR6ebZ1yExl2sLPXe6LZaOcOClEylwiYlPET6mTxKYvwz4L4DGGH8DO xyxA== X-Gm-Message-State: AOAM532UOarqwF43T4lviXNgD5G4JNDgVleITns6jwqJAl0QXK3+Vm3L 7Lu/sv5ybvpt7bbwF4mdx3RmfTIhBpkBSQ== X-Google-Smtp-Source: ABdhPJz8WHwRNrKCBAec4wIS6xJuhRvYSntcxbf8ukckt6s2KLWTDq+JRpmXuPe8tDBm55b9pipVIHust5tv6Q== X-Received: from mmandlik.mtv.corp.google.com ([2620:15c:202:201:867d:d253:fd17:d811]) (user=mmandlik job=sendgmr) by 2002:a5b:302:0:b0:64b:a20a:fcd9 with SMTP id j2-20020a5b0302000000b0064ba20afcd9mr27418093ybp.492.1653423269940; Tue, 24 May 2022 13:14:29 -0700 (PDT) Date: Tue, 24 May 2022 13:14:25 -0700 In-Reply-To: <20220524131406.1.If745ed1d05d98c002fc84ba60cef99eb786b7caa@changeid> Message-Id: <20220524131407.2.Id703da51f33c425056a1148b91468dd6b06429b3@changeid> Mime-Version: 1.0 References: <20220524131406.1.If745ed1d05d98c002fc84ba60cef99eb786b7caa@changeid> X-Mailer: git-send-email 2.36.1.124.g0e6072fb45-goog Subject: [PATCH 2/2] Bluetooth: hci_sync: Refactor remove Adv Monitor From: Manish Mandlik To: marcel@holtmann.org, luiz.dentz@gmail.com Cc: chromeos-bluetooth-upstreaming@chromium.org, linux-bluetooth@vger.kernel.org, Manish Mandlik , Miao-chen Chou , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Johan Hedberg , Paolo Abeni , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Make use of hci_cmd_sync_queue for removing an advertisement monitor. Signed-off-by: Manish Mandlik Reviewed-by: Miao-chen Chou --- include/net/bluetooth/hci_core.h | 6 +-- net/bluetooth/hci_core.c | 87 ++++++++++---------------------- net/bluetooth/mgmt.c | 67 ++++++------------------ net/bluetooth/msft.c | 87 +++++++------------------------- net/bluetooth/msft.h | 6 +-- 5 files changed, 63 insertions(+), 190 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 59953a7a6328..7a1e48d794ea 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1410,10 +1410,9 @@ bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); void hci_adv_monitors_clear(struct hci_dev *hdev); void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); -int hci_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status); int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); -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); +int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); +int hci_remove_all_adv_monitor(struct hci_dev *hdev); bool hci_is_adv_monitoring(struct hci_dev *hdev); int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); @@ -1873,7 +1872,6 @@ 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_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status); void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, bdaddr_t *bdaddr, u8 addr_type); diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index bbbbe3203130..c233844a3fc4 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -1873,11 +1873,6 @@ void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor) kfree(monitor); } -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. */ @@ -1927,92 +1922,64 @@ int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor) /* 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) +static int hci_remove_adv_monitor(struct hci_dev *hdev, + struct adv_monitor *monitor) { - *err = 0; + int status = 0; switch (hci_get_adv_monitor_offload_ext(hdev)) { case HCI_ADV_MONITOR_EXT_NONE: /* also goes here when powered off */ - goto free_monitor; + hci_free_adv_monitor(hdev, monitor); + bt_dev_dbg(hdev, "%s remove monitor %d status %d", hdev->name, + monitor->handle, status); + break; + case HCI_ADV_MONITOR_EXT_MSFT: - *err = msft_remove_monitor(hdev, monitor, handle); + hci_req_sync_lock(hdev); + status = msft_remove_monitor(hdev, monitor); + hci_req_sync_unlock(hdev); + bt_dev_dbg(hdev, "%s remove monitor %d msft status %d", + hdev->name, monitor->handle, status); break; } - /* In case no matching handle registered, just free the monitor */ - if (*err == -ENOENT) - goto free_monitor; - - return (*err == 0); - -free_monitor: - if (*err == -ENOENT) + if (status == -ENOENT) bt_dev_warn(hdev, "Removing monitor with no matching handle %d", monitor->handle); - hci_free_adv_monitor(hdev, monitor); - *err = 0; - return false; + return status; } -/* 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) +int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle) { 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_passive_scan(hdev); - - bt_dev_dbg(hdev, "%s remove monitor handle %d, status %d, %spending", - hdev->name, handle, *err, pending ? "" : "not "); + if (!monitor) + return -EINVAL; - return pending; + return hci_remove_adv_monitor(hdev, monitor); } -/* 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) +int hci_remove_all_adv_monitor(struct hci_dev *hdev) { struct adv_monitor *monitor; int idr_next_id = 0; - bool pending = false; - bool update = false; - - *err = 0; + int status = 0; - while (!*err && !pending) { + while (1) { monitor = idr_get_next(&hdev->adv_monitors_idr, &idr_next_id); if (!monitor) break; - pending = hci_remove_adv_monitor(hdev, monitor, 0, err); + status = hci_remove_adv_monitor(hdev, monitor); + if (status) + return status; - if (!*err && !pending) - update = true; + idr_next_id++; } - if (update) - hci_update_passive_scan(hdev); - - bt_dev_dbg(hdev, "%s remove all monitors status %d, %spending", - hdev->name, *err, pending ? "" : "not "); - - return pending; + return status; } /* This function requires the caller holds hdev->lock */ diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index d04f90698a87..12d91cd87ff0 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -4839,37 +4839,6 @@ static int add_adv_patterns_monitor_rssi(struct sock *sk, struct hci_dev *hdev, return 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_passive_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 %u", - rp.monitor_handle, status); - - return err; -} - static int remove_adv_monitor(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) { @@ -4877,11 +4846,7 @@ static int remove_adv_monitor(struct sock *sk, struct hci_dev *hdev, struct mgmt_rp_remove_adv_monitor rp; 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; + int err, status = MGMT_STATUS_SUCCESS; hci_dev_lock(hdev); @@ -4897,15 +4862,19 @@ static int remove_adv_monitor(struct sock *sk, struct hci_dev *hdev, goto unlock; } + hci_dev_unlock(hdev); + if (handle) - pending = hci_remove_single_adv_monitor(hdev, handle, &err); + err = hci_remove_single_adv_monitor(hdev, handle); else - pending = hci_remove_all_adv_monitor(hdev, &err); + err = hci_remove_all_adv_monitor(hdev); - if (err) { - mgmt_pending_remove(cmd); + hci_dev_lock(hdev); + + mgmt_pending_remove(cmd); - if (err == -ENOENT) + if (err) { + if (err == -ENOENT || err == -EINVAL) status = MGMT_STATUS_INVALID_INDEX; else status = MGMT_STATUS_FAILED; @@ -4913,19 +4882,13 @@ static int remove_adv_monitor(struct sock *sk, struct hci_dev *hdev, 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)); - } + rp.monitor_handle = cp->monitor_handle; + hci_update_passive_scan(hdev); hci_dev_unlock(hdev); - return 0; + + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_ADV_MONITOR, + MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); unlock: hci_dev_unlock(hdev); diff --git a/net/bluetooth/msft.c b/net/bluetooth/msft.c index 9abea16c4305..0d3378e707db 100644 --- a/net/bluetooth/msft.c +++ b/net/bluetooth/msft.c @@ -106,9 +106,6 @@ struct msft_data { __u8 filter_enabled; }; -static int __msft_remove_monitor(struct hci_dev *hdev, - struct adv_monitor *monitor, u16 handle); - bool msft_monitor_supported(struct hci_dev *hdev) { return !!(msft_get_features(hdev) & MSFT_FEATURE_MASK_LE_ADV_MONITOR); @@ -264,20 +261,16 @@ static int msft_le_monitor_advertisement_cb(struct hci_dev *hdev, u16 opcode, return status; } -static void msft_le_cancel_monitor_advertisement_cb(struct hci_dev *hdev, - u8 status, u16 opcode, - struct sk_buff *skb) +static int msft_le_cancel_monitor_advertisement_cb(struct hci_dev *hdev, + 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; + int status = 0; rp = (struct msft_rp_le_cancel_monitor_advertisement *)skb->data; if (skb->len < sizeof(*rp)) { @@ -285,6 +278,10 @@ static void msft_le_cancel_monitor_advertisement_cb(struct hci_dev *hdev, goto done; } + status = rp->status; + if (status) + goto done; + hci_dev_lock(hdev); cp = hci_sent_cmd_data(hdev, hdev->msft_opcode); @@ -312,26 +309,10 @@ static void msft_le_cancel_monitor_advertisement_cb(struct hci_dev *hdev, 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: - if (!msft->suspending) - hci_remove_adv_monitor_complete(hdev, status); + return status; } static int msft_remove_monitor_sync(struct hci_dev *hdev, @@ -340,13 +321,14 @@ static int msft_remove_monitor_sync(struct hci_dev *hdev, struct msft_cp_le_cancel_monitor_advertisement cp; struct msft_monitor_advertisement_handle_data *handle_data; struct sk_buff *skb; - u8 status; handle_data = msft_find_handle_data(hdev, monitor->handle, true); /* If no matched handle, just remove without telling controller */ - if (!handle_data) + if (!handle_data) { + hci_free_adv_monitor(hdev, monitor); return -ENOENT; + } cp.sub_opcode = MSFT_OP_LE_CANCEL_MONITOR_ADVERTISEMENT; cp.handle = handle_data->msft_handle; @@ -356,13 +338,8 @@ static int msft_remove_monitor_sync(struct hci_dev *hdev, if (IS_ERR(skb)) return PTR_ERR(skb); - status = skb->data[0]; - skb_pull(skb, 1); - - msft_le_cancel_monitor_advertisement_cb(hdev, status, hdev->msft_opcode, - skb); - - return status; + return msft_le_cancel_monitor_advertisement_cb(hdev, hdev->msft_opcode, + skb); } /* This function requires the caller holds hci_req_sync_lock */ @@ -821,38 +798,8 @@ int msft_add_monitor_pattern(struct hci_dev *hdev, struct adv_monitor *monitor) return msft_add_monitor_sync(hdev, monitor); } -/* This function requires the caller holds hdev->lock */ -static 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; - - 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; -} - -/* This function requires the caller holds hdev->lock */ -int msft_remove_monitor(struct hci_dev *hdev, struct adv_monitor *monitor, - u16 handle) +/* This function requires the caller holds hci_req_sync_lock */ +int msft_remove_monitor(struct hci_dev *hdev, struct adv_monitor *monitor) { struct msft_data *msft = hdev->msft_data; @@ -862,7 +809,7 @@ int msft_remove_monitor(struct hci_dev *hdev, struct adv_monitor *monitor, if (msft->resuming || msft->suspending) return -EBUSY; - return __msft_remove_monitor(hdev, monitor, handle); + return msft_remove_monitor_sync(hdev, monitor); } void msft_req_add_set_filter_enable(struct hci_request *req, bool enable) diff --git a/net/bluetooth/msft.h b/net/bluetooth/msft.h index afcaf7d3b1cb..2a63205b377b 100644 --- a/net/bluetooth/msft.h +++ b/net/bluetooth/msft.h @@ -20,8 +20,7 @@ void msft_do_close(struct hci_dev *hdev); void msft_vendor_evt(struct hci_dev *hdev, void *data, 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); +int msft_remove_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); void msft_req_add_set_filter_enable(struct hci_request *req, bool enable); int msft_set_filter_enable(struct hci_dev *hdev, bool enable); int msft_suspend_sync(struct hci_dev *hdev); @@ -49,8 +48,7 @@ static inline int msft_add_monitor_pattern(struct hci_dev *hdev, } static inline int msft_remove_monitor(struct hci_dev *hdev, - struct adv_monitor *monitor, - u16 handle) + struct adv_monitor *monitor) { return -EOPNOTSUPP; }