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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 adding an advertisement monitor. Signed-off-by: Manish Mandlik Reviewed-by: Miao-chen Chou --- include/net/bluetooth/hci_core.h | 5 +- net/bluetooth/hci_core.c | 47 ++++----- net/bluetooth/mgmt.c | 121 +++++++---------------- net/bluetooth/msft.c | 161 ++++++++----------------------- 4 files changed, 98 insertions(+), 236 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 5a52a2018b56..59953a7a6328 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1410,10 +1410,8 @@ 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_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_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); bool hci_is_adv_monitoring(struct hci_dev *hdev); @@ -1875,7 +1873,6 @@ 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_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status); 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 5abb2ca5b129..bbbbe3203130 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_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); @@ -1885,49 +1880,49 @@ int hci_remove_adv_monitor_complete(struct hci_dev *hdev, u8 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. - * This function requires the caller holds hdev->lock. */ -bool hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor, - int *err) +int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor) { int min, max, handle; + int status = 0; - *err = 0; + if (!monitor) + return -EINVAL; - if (!monitor) { - *err = -EINVAL; - return false; - } + hci_dev_lock(hdev); min = HCI_MIN_ADV_MONITOR_HANDLE; max = HCI_MIN_ADV_MONITOR_HANDLE + HCI_MAX_ADV_MONITOR_NUM_HANDLES; handle = idr_alloc(&hdev->adv_monitors_idr, monitor, min, max, GFP_KERNEL); - if (handle < 0) { - *err = handle; - return false; - } + + hci_dev_unlock(hdev); + + if (handle < 0) + return handle; monitor->handle = handle; if (!hdev_is_powered(hdev)) - return false; + return status; switch (hci_get_adv_monitor_offload_ext(hdev)) { case HCI_ADV_MONITOR_EXT_NONE: - hci_update_passive_scan(hdev); - bt_dev_dbg(hdev, "%s add monitor status %d", hdev->name, *err); + bt_dev_dbg(hdev, "%s add monitor %d status %d", hdev->name, + monitor->handle, status); /* Message was not forwarded to controller - not an error */ - return false; + break; + case HCI_ADV_MONITOR_EXT_MSFT: - *err = msft_add_monitor_pattern(hdev, monitor); - bt_dev_dbg(hdev, "%s add monitor msft status %d", hdev->name, - *err); + hci_req_sync_lock(hdev); + status = msft_add_monitor_pattern(hdev, monitor); + hci_req_sync_unlock(hdev); + bt_dev_dbg(hdev, "%s add monitor %d msft status %d", hdev->name, + monitor->handle, status); break; } - return (*err == 0); + return status; } /* Attempts to tell the controller and free the monitor. If somehow the diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 74937a834648..d04f90698a87 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -4653,75 +4653,21 @@ static int read_adv_mon_features(struct sock *sk, struct hci_dev *hdev, return err; } -int mgmt_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status) -{ - struct mgmt_rp_add_adv_patterns_monitor rp; - struct mgmt_pending_cmd *cmd; - struct adv_monitor *monitor; - int err = 0; - - hci_dev_lock(hdev); - - cmd = pending_find(MGMT_OP_ADD_ADV_PATTERNS_MONITOR_RSSI, hdev); - if (!cmd) { - cmd = pending_find(MGMT_OP_ADD_ADV_PATTERNS_MONITOR, hdev); - if (!cmd) - goto done; - } - - monitor = cmd->user_data; - rp.monitor_handle = cpu_to_le16(monitor->handle); - - if (!status) { - mgmt_adv_monitor_added(cmd->sk, hdev, monitor->handle); - hdev->adv_monitors_cnt++; - if (monitor->state == ADV_MONITOR_STATE_NOT_REGISTERED) - monitor->state = ADV_MONITOR_STATE_REGISTERED; - 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, "add monitor %d complete, status %u", - rp.monitor_handle, status); - - return err; -} - static int __add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, - struct adv_monitor *m, u8 status, - void *data, u16 len, u16 op) + struct adv_monitor *m, void *data, + u16 len, u16 op) { struct mgmt_rp_add_adv_patterns_monitor rp; - struct mgmt_pending_cmd *cmd; + u8 status = MGMT_STATUS_SUCCESS; int err; - bool pending; - - hci_dev_lock(hdev); - - if (status) - goto unlock; if (pending_find(MGMT_OP_SET_LE, hdev) || - pending_find(MGMT_OP_ADD_ADV_PATTERNS_MONITOR, hdev) || - pending_find(MGMT_OP_ADD_ADV_PATTERNS_MONITOR_RSSI, hdev) || pending_find(MGMT_OP_REMOVE_ADV_MONITOR, hdev)) { status = MGMT_STATUS_BUSY; - goto unlock; - } - - cmd = mgmt_pending_add(sk, op, hdev, data, len); - if (!cmd) { - status = MGMT_STATUS_NO_RESOURCES; - goto unlock; + goto done; } - cmd->user_data = m; - pending = hci_add_adv_monitor(hdev, m, &err); + err = hci_add_adv_monitor(hdev, m); if (err) { if (err == -ENOSPC || err == -ENOMEM) status = MGMT_STATUS_NO_RESOURCES; @@ -4730,30 +4676,29 @@ static int __add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, else status = MGMT_STATUS_FAILED; - mgmt_pending_remove(cmd); - goto unlock; + goto done; } - if (!pending) { - mgmt_pending_remove(cmd); - rp.monitor_handle = cpu_to_le16(m->handle); - mgmt_adv_monitor_added(sk, hdev, m->handle); - m->state = ADV_MONITOR_STATE_REGISTERED; - hdev->adv_monitors_cnt++; + hci_dev_lock(hdev); - hci_dev_unlock(hdev); - return mgmt_cmd_complete(sk, hdev->id, op, MGMT_STATUS_SUCCESS, - &rp, sizeof(rp)); - } + rp.monitor_handle = cpu_to_le16(m->handle); + mgmt_adv_monitor_added(sk, hdev, m->handle); + if (m->state == ADV_MONITOR_STATE_NOT_REGISTERED) + m->state = ADV_MONITOR_STATE_REGISTERED; + hdev->adv_monitors_cnt++; + hci_update_passive_scan(hdev); hci_dev_unlock(hdev); - return 0; +done: + bt_dev_dbg(hdev, "add monitor %d complete, status %u", m->handle, + status); -unlock: - hci_free_adv_monitor(hdev, m); - hci_dev_unlock(hdev); - return mgmt_cmd_status(sk, hdev->id, op, status); + if (status) + return mgmt_cmd_status(sk, hdev->id, op, status); + + return mgmt_cmd_complete(sk, hdev->id, op, MGMT_STATUS_SUCCESS, &rp, + sizeof(rp)); } static void parse_adv_monitor_rssi(struct adv_monitor *m, @@ -4817,7 +4762,7 @@ static int add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, { struct mgmt_cp_add_adv_patterns_monitor *cp = data; struct adv_monitor *m = NULL; - u8 status = MGMT_STATUS_SUCCESS; + int status = MGMT_STATUS_SUCCESS; size_t expected_size = sizeof(*cp); BT_DBG("request for %s", hdev->name); @@ -4843,10 +4788,14 @@ static int add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev, parse_adv_monitor_rssi(m, NULL); status = parse_adv_monitor_pattern(m, cp->pattern_count, cp->patterns); + if (status) + goto done; + + status = __add_adv_patterns_monitor(sk, hdev, m, data, len, + MGMT_OP_ADD_ADV_PATTERNS_MONITOR); done: - return __add_adv_patterns_monitor(sk, hdev, m, status, data, len, - MGMT_OP_ADD_ADV_PATTERNS_MONITOR); + return status; } static int add_adv_patterns_monitor_rssi(struct sock *sk, struct hci_dev *hdev, @@ -4854,7 +4803,7 @@ static int add_adv_patterns_monitor_rssi(struct sock *sk, struct hci_dev *hdev, { struct mgmt_cp_add_adv_patterns_monitor_rssi *cp = data; struct adv_monitor *m = NULL; - u8 status = MGMT_STATUS_SUCCESS; + int status = MGMT_STATUS_SUCCESS; size_t expected_size = sizeof(*cp); BT_DBG("request for %s", hdev->name); @@ -4880,10 +4829,14 @@ static int add_adv_patterns_monitor_rssi(struct sock *sk, struct hci_dev *hdev, parse_adv_monitor_rssi(m, &cp->rssi); status = parse_adv_monitor_pattern(m, cp->pattern_count, cp->patterns); + if (status) + goto done; -done: - return __add_adv_patterns_monitor(sk, hdev, m, status, data, len, + status = __add_adv_patterns_monitor(sk, hdev, m, data, len, MGMT_OP_ADD_ADV_PATTERNS_MONITOR_RSSI); + +done: + return status; } int mgmt_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status) @@ -4933,9 +4886,7 @@ static int remove_adv_monitor(struct sock *sk, struct hci_dev *hdev, hci_dev_lock(hdev); 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) || - pending_find(MGMT_OP_ADD_ADV_PATTERNS_MONITOR_RSSI, hdev)) { + pending_find(MGMT_OP_REMOVE_ADV_MONITOR, hdev)) { status = MGMT_STATUS_BUSY; goto unlock; } diff --git a/net/bluetooth/msft.c b/net/bluetooth/msft.c index f43994523b1f..9abea16c4305 100644 --- a/net/bluetooth/msft.c +++ b/net/bluetooth/msft.c @@ -106,8 +106,6 @@ struct msft_data { __u8 filter_enabled; }; -static int __msft_add_monitor_pattern(struct hci_dev *hdev, - struct adv_monitor *monitor); static int __msft_remove_monitor(struct hci_dev *hdev, struct adv_monitor *monitor, u16 handle); @@ -164,34 +162,6 @@ static bool read_supported_features(struct hci_dev *hdev, return false; } -static void reregister_monitor(struct hci_dev *hdev, int handle) -{ - struct adv_monitor *monitor; - struct msft_data *msft = hdev->msft_data; - int err; - - while (1) { - monitor = idr_get_next(&hdev->adv_monitors_idr, &handle); - if (!monitor) { - /* All monitors have been resumed */ - msft->resuming = false; - hci_update_passive_scan(hdev); - return; - } - - msft->pending_add_handle = (u16)handle; - err = __msft_add_monitor_pattern(hdev, monitor); - - /* If success, we return and wait for monitor added callback */ - if (!err) - return; - - /* Otherwise remove the monitor and keep registering */ - hci_free_adv_monitor(hdev, monitor); - handle++; - } -} - /* 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 @@ -243,14 +213,14 @@ static int msft_monitor_device_del(struct hci_dev *hdev, __u16 mgmt_handle, return count; } -static void msft_le_monitor_advertisement_cb(struct hci_dev *hdev, - u8 status, u16 opcode, - struct sk_buff *skb) +static int msft_le_monitor_advertisement_cb(struct hci_dev *hdev, u16 opcode, + struct sk_buff *skb) { struct msft_rp_le_monitor_advertisement *rp; struct adv_monitor *monitor; struct msft_monitor_advertisement_handle_data *handle_data; struct msft_data *msft = hdev->msft_data; + int status = 0; hci_dev_lock(hdev); @@ -262,15 +232,16 @@ static void msft_le_monitor_advertisement_cb(struct hci_dev *hdev, goto unlock; } - if (status) - goto unlock; - rp = (struct msft_rp_le_monitor_advertisement *)skb->data; if (skb->len < sizeof(*rp)) { status = HCI_ERROR_UNSPECIFIED; goto unlock; } + status = rp->status; + if (status) + goto unlock; + handle_data = kmalloc(sizeof(*handle_data), GFP_KERNEL); if (!handle_data) { status = HCI_ERROR_UNSPECIFIED; @@ -290,8 +261,7 @@ static void msft_le_monitor_advertisement_cb(struct hci_dev *hdev, hci_dev_unlock(hdev); - if (!msft->resuming) - hci_add_adv_patterns_monitor_complete(hdev, status); + return status; } static void msft_le_cancel_monitor_advertisement_cb(struct hci_dev *hdev, @@ -463,7 +433,7 @@ static int msft_add_monitor_sync(struct hci_dev *hdev, ptrdiff_t offset = 0; u8 pattern_count = 0; struct sk_buff *skb; - u8 status; + struct msft_data *msft = hdev->msft_data; if (!msft_monitor_pattern_valid(monitor)) return -EINVAL; @@ -505,20 +475,40 @@ static int msft_add_monitor_sync(struct hci_dev *hdev, if (IS_ERR(skb)) return PTR_ERR(skb); - status = skb->data[0]; - skb_pull(skb, 1); + msft->pending_add_handle = monitor->handle; - msft_le_monitor_advertisement_cb(hdev, status, hdev->msft_opcode, skb); + return msft_le_monitor_advertisement_cb(hdev, hdev->msft_opcode, skb); +} - return status; +static void reregister_monitor(struct hci_dev *hdev) +{ + struct adv_monitor *monitor; + struct msft_data *msft = hdev->msft_data; + int handle = 0; + + if (!msft) + return; + + msft->resuming = true; + + while (1) { + monitor = idr_get_next(&hdev->adv_monitors_idr, &handle); + if (!monitor) + break; + + msft_add_monitor_sync(hdev, monitor); + + handle++; + } + + /* All monitors have been reregistered */ + msft->resuming = false; } /* This function requires the caller holds hci_req_sync_lock */ int msft_resume_sync(struct hci_dev *hdev) { struct msft_data *msft = hdev->msft_data; - struct adv_monitor *monitor; - int handle = 0; if (!msft || !msft_monitor_supported(hdev)) return 0; @@ -533,24 +523,12 @@ int msft_resume_sync(struct hci_dev *hdev) hci_dev_unlock(hdev); - msft->resuming = true; - - while (1) { - monitor = idr_get_next(&hdev->adv_monitors_idr, &handle); - if (!monitor) - break; - - msft_add_monitor_sync(hdev, monitor); - - handle++; - } - - /* All monitors have been resumed */ - msft->resuming = false; + reregister_monitor(hdev); return 0; } +/* This function requires the caller holds hci_req_sync_lock */ void msft_do_open(struct hci_dev *hdev) { struct msft_data *msft = hdev->msft_data; @@ -583,7 +561,7 @@ void msft_do_open(struct hci_dev *hdev) /* Monitors get removed on power off, so we need to explicitly * tell the controller to re-monitor. */ - reregister_monitor(hdev, 0); + reregister_monitor(hdev); } } @@ -829,66 +807,7 @@ static void msft_le_set_advertisement_filter_enable_cb(struct hci_dev *hdev, hci_dev_unlock(hdev); } -/* This function requires the caller holds hdev->lock */ -static int __msft_add_monitor_pattern(struct hci_dev *hdev, - struct adv_monitor *monitor) -{ - struct msft_cp_le_monitor_advertisement *cp; - struct msft_le_monitor_advertisement_pattern_data *pattern_data; - struct msft_le_monitor_advertisement_pattern *pattern; - struct adv_pattern *entry; - struct hci_request req; - struct msft_data *msft = hdev->msft_data; - size_t total_size = sizeof(*cp) + sizeof(*pattern_data); - ptrdiff_t offset = 0; - u8 pattern_count = 0; - int err = 0; - - if (!msft_monitor_pattern_valid(monitor)) - return -EINVAL; - - list_for_each_entry(entry, &monitor->patterns, list) { - pattern_count++; - total_size += sizeof(*pattern) + entry->length; - } - - cp = kmalloc(total_size, GFP_KERNEL); - if (!cp) - return -ENOMEM; - - cp->sub_opcode = MSFT_OP_LE_MONITOR_ADVERTISEMENT; - cp->rssi_high = monitor->rssi.high_threshold; - cp->rssi_low = monitor->rssi.low_threshold; - cp->rssi_low_interval = (u8)monitor->rssi.low_threshold_timeout; - cp->rssi_sampling_period = monitor->rssi.sampling_period; - - cp->cond_type = MSFT_MONITOR_ADVERTISEMENT_TYPE_PATTERN; - - pattern_data = (void *)cp->data; - pattern_data->count = pattern_count; - - list_for_each_entry(entry, &monitor->patterns, list) { - pattern = (void *)(pattern_data->data + offset); - /* the length also includes data_type and offset */ - pattern->length = entry->length + 2; - pattern->data_type = entry->ad_type; - pattern->start_byte = entry->offset; - memcpy(pattern->pattern, entry->value, entry->length); - offset += sizeof(*pattern) + entry->length; - } - - hci_req_init(&req, hdev); - hci_req_add(&req, hdev->msft_opcode, total_size, cp); - err = hci_req_run_skb(&req, msft_le_monitor_advertisement_cb); - kfree(cp); - - if (!err) - msft->pending_add_handle = monitor->handle; - - return err; -} - -/* This function requires the caller holds hdev->lock */ +/* This function requires the caller holds hci_req_sync_lock */ int msft_add_monitor_pattern(struct hci_dev *hdev, struct adv_monitor *monitor) { struct msft_data *msft = hdev->msft_data; @@ -899,7 +818,7 @@ int msft_add_monitor_pattern(struct hci_dev *hdev, struct adv_monitor *monitor) if (msft->resuming || msft->suspending) return -EBUSY; - return __msft_add_monitor_pattern(hdev, monitor); + return msft_add_monitor_sync(hdev, monitor); } /* This function requires the caller holds hdev->lock */