diff options
Diffstat (limited to 'net/bluetooth/hci_event.c')
-rw-r--r-- | net/bluetooth/hci_event.c | 211 |
1 files changed, 156 insertions, 55 deletions
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 7d0db1ca1248..efc5458b1345 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -545,9 +545,7 @@ static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb) hdev->features[1][0] &= ~LMP_HOST_SSP; } - if (hci_dev_test_flag(hdev, HCI_MGMT)) - mgmt_ssp_enable_complete(hdev, sent->mode, status); - else if (!status) { + if (!status) { if (sent->mode) hci_dev_set_flag(hdev, HCI_SSP_ENABLED); else @@ -1239,6 +1237,55 @@ static void hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, hci_dev_unlock(hdev); } +static void hci_cc_le_remove_adv_set(struct hci_dev *hdev, struct sk_buff *skb) +{ + __u8 status = *((__u8 *)skb->data); + u8 *instance; + int err; + + if (status) + return; + + instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); + if (!instance) + return; + + hci_dev_lock(hdev); + + err = hci_remove_adv_instance(hdev, *instance); + if (!err) + mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, + *instance); + + hci_dev_unlock(hdev); +} + +static void hci_cc_le_clear_adv_sets(struct hci_dev *hdev, struct sk_buff *skb) +{ + __u8 status = *((__u8 *)skb->data); + struct adv_info *adv, *n; + int err; + + if (status) + return; + + if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) + return; + + hci_dev_lock(hdev); + + list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { + u8 instance = adv->instance; + + err = hci_remove_adv_instance(hdev, instance); + if (!err) + mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), + hdev, instance); + } + + hci_dev_unlock(hdev); +} + static void hci_cc_le_read_transmit_power(struct hci_dev *hdev, struct sk_buff *skb) { @@ -1326,8 +1373,10 @@ static void hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, &conn->le_conn_timeout, conn->conn_timeout); } else { - if (adv) { - adv->enabled = false; + if (cp->num_of_sets) { + if (adv) + adv->enabled = false; + /* If just one instance was disabled check if there are * any other instance enabled before clearing HCI_LE_ADV */ @@ -1463,16 +1512,10 @@ static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we * interrupted scanning due to a connect request. Mark - * therefore discovery as stopped. If this was not - * because of a connect request advertising might have - * been disabled because of active scanning, so - * re-enable it again if necessary. + * therefore discovery as stopped. */ if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) hci_discovery_set_state(hdev, DISCOVERY_STOPPED); - else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && - hdev->discovery.state == DISCOVERY_FINDING) - hci_req_reenable_advertising(hdev); break; @@ -2371,9 +2414,14 @@ static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) { struct hci_cp_disconnect *cp; + struct hci_conn_params *params; struct hci_conn *conn; + bool mgmt_conn; - if (!status) + /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended + * otherwise cleanup the connection immediately. + */ + if (!status && !hdev->suspended) return; cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); @@ -2383,23 +2431,60 @@ static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) hci_dev_lock(hdev); conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); - if (conn) { + if (!conn) + goto unlock; + + if (status) { mgmt_disconnect_failed(hdev, &conn->dst, conn->type, conn->dst_type, status); if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { hdev->cur_adv_instance = conn->adv_instance; - hci_req_reenable_advertising(hdev); + hci_enable_advertising(hdev); } - /* If the disconnection failed for any reason, the upper layer - * does not retry to disconnect in current implementation. - * Hence, we need to do some basic cleanup here and re-enable - * advertising if necessary. - */ - hci_conn_del(conn); + goto done; + } + + mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); + + if (conn->type == ACL_LINK) { + if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) + hci_remove_link_key(hdev, &conn->dst); + } + + params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); + if (params) { + switch (params->auto_connect) { + case HCI_AUTO_CONN_LINK_LOSS: + if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) + break; + fallthrough; + + case HCI_AUTO_CONN_DIRECT: + case HCI_AUTO_CONN_ALWAYS: + list_del_init(¶ms->action); + list_add(¶ms->action, &hdev->pend_le_conns); + break; + + default: + break; + } } + mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, + cp->reason, mgmt_conn); + + hci_disconn_cfm(conn, cp->reason); + +done: + /* If the disconnection failed for any reason, the upper layer + * does not retry to disconnect in current implementation. + * Hence, we need to do some basic cleanup here and re-enable + * advertising if necessary. + */ + hci_conn_del(conn); +unlock: hci_dev_unlock(hdev); } @@ -2977,7 +3062,7 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) case HCI_AUTO_CONN_ALWAYS: list_del_init(¶ms->action); list_add(¶ms->action, &hdev->pend_le_conns); - hci_update_background_scan(hdev); + hci_update_passive_scan(hdev); break; default: @@ -2987,14 +3072,6 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_disconn_cfm(conn, ev->reason); - /* The suspend notifier is waiting for all devices to disconnect so - * clear the bit from pending tasks and inform the wait queue. - */ - if (list_empty(&hdev->conn_hash.list) && - test_and_clear_bit(SUSPEND_DISCONNECTING, hdev->suspend_tasks)) { - wake_up(&hdev->suspend_wait_q); - } - /* Re-enable advertising if necessary, since it might * have been disabled by the connection. From the * HCI_LE_Set_Advertise_Enable command description in @@ -3007,7 +3084,7 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) */ if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { hdev->cur_adv_instance = conn->adv_instance; - hci_req_reenable_advertising(hdev); + hci_enable_advertising(hdev); } hci_conn_del(conn); @@ -3723,6 +3800,14 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb, hci_cc_le_set_adv_set_random_addr(hdev, skb); break; + case HCI_OP_LE_REMOVE_ADV_SET: + hci_cc_le_remove_adv_set(hdev, skb); + break; + + case HCI_OP_LE_CLEAR_ADV_SETS: + hci_cc_le_clear_adv_sets(hdev, skb); + break; + case HCI_OP_LE_READ_TRANSMIT_POWER: hci_cc_le_read_transmit_power(hdev, skb); break; @@ -4445,7 +4530,6 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev, { struct hci_ev_sync_conn_complete *ev = (void *) skb->data; struct hci_conn *conn; - unsigned int notify_evt; BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); @@ -4517,22 +4601,18 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev, } bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); - - switch (ev->air_mode) { - case 0x02: - notify_evt = HCI_NOTIFY_ENABLE_SCO_CVSD; - break; - case 0x03: - notify_evt = HCI_NOTIFY_ENABLE_SCO_TRANSP; - break; - } - /* Notify only in case of SCO over HCI transport data path which * is zero and non-zero value shall be non-HCI transport data path */ - if (conn->codec.data_path == 0) { - if (hdev->notify) - hdev->notify(hdev, notify_evt); + if (conn->codec.data_path == 0 && hdev->notify) { + switch (ev->air_mode) { + case 0x02: + hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); + break; + case 0x03: + hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); + break; + } } hci_connect_cfm(conn, ev->status); @@ -5412,7 +5492,7 @@ static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, } unlock: - hci_update_background_scan(hdev); + hci_update_passive_scan(hdev); hci_dev_unlock(hdev); } @@ -5441,23 +5521,30 @@ static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, le16_to_cpu(ev->interval), le16_to_cpu(ev->latency), le16_to_cpu(ev->supervision_timeout)); - - if (use_ll_privacy(hdev) && - hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY) && - hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) - hci_req_disable_address_resolution(hdev); } static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, struct sk_buff *skb) { struct hci_evt_le_ext_adv_set_term *ev = (void *) skb->data; struct hci_conn *conn; - struct adv_info *adv; + struct adv_info *adv, *n; BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); adv = hci_find_adv_instance(hdev, ev->handle); + /* The Bluetooth Core 5.3 specification clearly states that this event + * shall not be sent when the Host disables the advertising set. So in + * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. + * + * When the Host disables an advertising set, all cleanup is done via + * its command callback and not needed to be duplicated here. + */ + if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { + bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); + return; + } + if (ev->status) { if (!adv) return; @@ -5466,6 +5553,13 @@ static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_remove_adv_instance(hdev, ev->handle); mgmt_advertising_removed(NULL, hdev, ev->handle); + list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { + if (adv->enabled) + return; + } + + /* We are no longer advertising, clear HCI_LE_ADV */ + hci_dev_clear_flag(hdev, HCI_LE_ADV); return; } @@ -5529,8 +5623,9 @@ static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) return NULL; - /* Ignore if the device is blocked */ - if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type)) + /* Ignore if the device is blocked or hdev is suspended */ + if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || + hdev->suspended) return NULL; /* Most controller will fail if we try to create new connections @@ -5825,7 +5920,8 @@ static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb) struct hci_ev_le_advertising_info *ev = ptr; s8 rssi; - if (ev->length <= HCI_MAX_AD_LENGTH) { + if (ev->length <= HCI_MAX_AD_LENGTH && + ev->data + ev->length <= skb_tail_pointer(skb)) { rssi = ev->data[ev->length]; process_adv_report(hdev, ev->evt_type, &ev->bdaddr, ev->bdaddr_type, NULL, 0, rssi, @@ -5835,6 +5931,11 @@ static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb) } ptr += sizeof(*ev) + ev->length + 1; + + if (ptr > (void *) skb_tail_pointer(skb) - sizeof(*ev)) { + bt_dev_err(hdev, "Malicious advertising data. Stopping processing"); + break; + } } hci_dev_unlock(hdev); |