| /* |
| BlueZ - Bluetooth protocol stack for Linux |
| Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. |
| Copyright 2023-2024 NXP |
| |
| Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License version 2 as |
| published by the Free Software Foundation; |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
| CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| |
| ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
| SOFTWARE IS DISCLAIMED. |
| */ |
| |
| /* Bluetooth HCI event handling. */ |
| |
| #include <asm/unaligned.h> |
| #include <linux/crypto.h> |
| #include <crypto/algapi.h> |
| |
| #include <net/bluetooth/bluetooth.h> |
| #include <net/bluetooth/hci_core.h> |
| #include <net/bluetooth/mgmt.h> |
| |
| #include "hci_request.h" |
| #include "hci_debugfs.h" |
| #include "hci_codec.h" |
| #include "smp.h" |
| #include "msft.h" |
| #include "eir.h" |
| |
| #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ |
| "\x00\x00\x00\x00\x00\x00\x00\x00" |
| |
| #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000) |
| |
| /* Handle HCI Event packets */ |
| |
| static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, |
| u8 ev, size_t len) |
| { |
| void *data; |
| |
| data = skb_pull_data(skb, len); |
| if (!data) |
| bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev); |
| |
| return data; |
| } |
| |
| static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, |
| u16 op, size_t len) |
| { |
| void *data; |
| |
| data = skb_pull_data(skb, len); |
| if (!data) |
| bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op); |
| |
| return data; |
| } |
| |
| static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, |
| u8 ev, size_t len) |
| { |
| void *data; |
| |
| data = skb_pull_data(skb, len); |
| if (!data) |
| bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev); |
| |
| return data; |
| } |
| |
| static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| /* It is possible that we receive Inquiry Complete event right |
| * before we receive Inquiry Cancel Command Complete event, in |
| * which case the latter event should have status of Command |
| * Disallowed. This should not be treated as error, since |
| * we actually achieve what Inquiry Cancel wants to achieve, |
| * which is to end the last Inquiry session. |
| */ |
| if (rp->status == HCI_ERROR_COMMAND_DISALLOWED && !test_bit(HCI_INQUIRY, &hdev->flags)) { |
| bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command"); |
| rp->status = 0x00; |
| } |
| |
| if (rp->status) |
| return rp->status; |
| |
| clear_bit(HCI_INQUIRY, &hdev->flags); |
| smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ |
| wake_up_bit(&hdev->flags, HCI_INQUIRY); |
| |
| hci_dev_lock(hdev); |
| /* Set discovery state to stopped if we're not doing LE active |
| * scanning. |
| */ |
| if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || |
| hdev->le_scan_type != LE_SCAN_ACTIVE) |
| hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hci_dev_set_flag(hdev, HCI_PERIODIC_INQ); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_role_discovery *rp = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); |
| if (conn) |
| conn->role = rp->role; |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_link_policy *rp = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); |
| if (conn) |
| conn->link_policy = __le16_to_cpu(rp->policy); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_write_link_policy *rp = data; |
| struct hci_conn *conn; |
| void *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); |
| if (conn) |
| conn->link_policy = get_unaligned_le16(sent + 2); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_def_link_policy *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->link_policy = __le16_to_cpu(rp->policy); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| void *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY); |
| if (!sent) |
| return rp->status; |
| |
| hdev->link_policy = get_unaligned_le16(sent); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| clear_bit(HCI_RESET, &hdev->flags); |
| |
| if (rp->status) |
| return rp->status; |
| |
| /* Reset all non-persistent flags */ |
| hci_dev_clear_volatile_flags(hdev); |
| |
| hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
| |
| hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
| hdev->adv_tx_power = HCI_TX_POWER_INVALID; |
| |
| memset(hdev->adv_data, 0, sizeof(hdev->adv_data)); |
| hdev->adv_data_len = 0; |
| |
| memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data)); |
| hdev->scan_rsp_data_len = 0; |
| |
| hdev->le_scan_type = LE_SCAN_PASSIVE; |
| |
| hdev->ssp_debug_mode = 0; |
| |
| hci_bdaddr_list_clear(&hdev->le_accept_list); |
| hci_bdaddr_list_clear(&hdev->le_resolv_list); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_stored_link_key *rp = data; |
| struct hci_cp_read_stored_link_key *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY); |
| if (!sent) |
| return rp->status; |
| |
| if (!rp->status && sent->read_all == 0x01) { |
| hdev->stored_max_keys = le16_to_cpu(rp->max_keys); |
| hdev->stored_num_keys = le16_to_cpu(rp->num_keys); |
| } |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_delete_stored_link_key *rp = data; |
| u16 num_keys; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| num_keys = le16_to_cpu(rp->num_keys); |
| |
| if (num_keys <= hdev->stored_num_keys) |
| hdev->stored_num_keys -= num_keys; |
| else |
| hdev->stored_num_keys = 0; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| void *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_set_local_name_complete(hdev, sent, rp->status); |
| else if (!rp->status) |
| memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_local_name *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| if (hci_dev_test_flag(hdev, HCI_SETUP) || |
| hci_dev_test_flag(hdev, HCI_CONFIG)) |
| memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| void *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| if (!rp->status) { |
| __u8 param = *((__u8 *) sent); |
| |
| if (param == AUTH_ENABLED) |
| set_bit(HCI_AUTH, &hdev->flags); |
| else |
| clear_bit(HCI_AUTH, &hdev->flags); |
| } |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_auth_enable_complete(hdev, rp->status); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| __u8 param; |
| void *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE); |
| if (!sent) |
| return rp->status; |
| |
| param = *((__u8 *) sent); |
| |
| if (param) |
| set_bit(HCI_ENCRYPT, &hdev->flags); |
| else |
| clear_bit(HCI_ENCRYPT, &hdev->flags); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| __u8 param; |
| void *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE); |
| if (!sent) |
| return rp->status; |
| |
| param = *((__u8 *) sent); |
| |
| hci_dev_lock(hdev); |
| |
| if (rp->status) { |
| hdev->discov_timeout = 0; |
| goto done; |
| } |
| |
| if (param & SCAN_INQUIRY) |
| set_bit(HCI_ISCAN, &hdev->flags); |
| else |
| clear_bit(HCI_ISCAN, &hdev->flags); |
| |
| if (param & SCAN_PAGE) |
| set_bit(HCI_PSCAN, &hdev->flags); |
| else |
| clear_bit(HCI_PSCAN, &hdev->flags); |
| |
| done: |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| struct hci_cp_set_event_filter *cp; |
| void *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT); |
| if (!sent) |
| return rp->status; |
| |
| cp = (struct hci_cp_set_event_filter *)sent; |
| |
| if (cp->flt_type == HCI_FLT_CLEAR_ALL) |
| hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); |
| else |
| hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_class_of_dev *rp = data; |
| |
| if (WARN_ON(!hdev)) |
| return HCI_ERROR_UNSPECIFIED; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| memcpy(hdev->dev_class, rp->dev_class, 3); |
| |
| bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2], |
| hdev->dev_class[1], hdev->dev_class[0]); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| void *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| if (!rp->status) |
| memcpy(hdev->dev_class, sent, 3); |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_set_class_of_dev_complete(hdev, sent, rp->status); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_voice_setting *rp = data; |
| __u16 setting; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| setting = __le16_to_cpu(rp->voice_setting); |
| |
| if (hdev->voice_setting == setting) |
| return rp->status; |
| |
| hdev->voice_setting = setting; |
| |
| bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); |
| |
| if (hdev->notify) |
| hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| __u16 setting; |
| void *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING); |
| if (!sent) |
| return rp->status; |
| |
| setting = get_unaligned_le16(sent); |
| |
| if (hdev->voice_setting == setting) |
| return rp->status; |
| |
| hdev->voice_setting = setting; |
| |
| bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); |
| |
| if (hdev->notify) |
| hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_num_supported_iac *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->num_iac = rp->num_iac; |
| |
| bt_dev_dbg(hdev, "num iac %d", hdev->num_iac); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| struct hci_cp_write_ssp_mode *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| if (!rp->status) { |
| if (sent->mode) |
| hdev->features[1][0] |= LMP_HOST_SSP; |
| else |
| hdev->features[1][0] &= ~LMP_HOST_SSP; |
| } |
| |
| if (!rp->status) { |
| if (sent->mode) |
| hci_dev_set_flag(hdev, HCI_SSP_ENABLED); |
| else |
| hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); |
| } |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| struct hci_cp_write_sc_support *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| if (!rp->status) { |
| if (sent->support) |
| hdev->features[1][0] |= LMP_HOST_SC; |
| else |
| hdev->features[1][0] &= ~LMP_HOST_SC; |
| } |
| |
| if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) { |
| if (sent->support) |
| hci_dev_set_flag(hdev, HCI_SC_ENABLED); |
| else |
| hci_dev_clear_flag(hdev, HCI_SC_ENABLED); |
| } |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_local_version *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| if (hci_dev_test_flag(hdev, HCI_SETUP) || |
| hci_dev_test_flag(hdev, HCI_CONFIG)) { |
| hdev->hci_ver = rp->hci_ver; |
| hdev->hci_rev = __le16_to_cpu(rp->hci_rev); |
| hdev->lmp_ver = rp->lmp_ver; |
| hdev->manufacturer = __le16_to_cpu(rp->manufacturer); |
| hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver); |
| } |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_enc_key_size *rp = data; |
| struct hci_conn *conn; |
| u16 handle; |
| u8 status = rp->status; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| handle = le16_to_cpu(rp->handle); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, handle); |
| if (!conn) { |
| status = 0xFF; |
| goto done; |
| } |
| |
| /* While unexpected, the read_enc_key_size command may fail. The most |
| * secure approach is to then assume the key size is 0 to force a |
| * disconnection. |
| */ |
| if (status) { |
| bt_dev_err(hdev, "failed to read key size for handle %u", |
| handle); |
| conn->enc_key_size = 0; |
| } else { |
| conn->enc_key_size = rp->key_size; |
| status = 0; |
| |
| if (conn->enc_key_size < hdev->min_enc_key_size) { |
| /* As slave role, the conn->state has been set to |
| * BT_CONNECTED and l2cap conn req might not be received |
| * yet, at this moment the l2cap layer almost does |
| * nothing with the non-zero status. |
| * So we also clear encrypt related bits, and then the |
| * handler of l2cap conn req will get the right secure |
| * state at a later time. |
| */ |
| status = HCI_ERROR_AUTH_FAILURE; |
| clear_bit(HCI_CONN_ENCRYPT, &conn->flags); |
| clear_bit(HCI_CONN_AES_CCM, &conn->flags); |
| } |
| } |
| |
| hci_encrypt_cfm(conn, status); |
| |
| done: |
| hci_dev_unlock(hdev); |
| |
| return status; |
| } |
| |
| static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_local_commands *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| if (hci_dev_test_flag(hdev, HCI_SETUP) || |
| hci_dev_test_flag(hdev, HCI_CONFIG)) |
| memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_auth_payload_to *rp = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); |
| if (conn) |
| conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_write_auth_payload_to *rp = data; |
| struct hci_conn *conn; |
| void *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); |
| if (!conn) { |
| rp->status = 0xff; |
| goto unlock; |
| } |
| |
| if (!rp->status) |
| conn->auth_payload_timeout = get_unaligned_le16(sent + 2); |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_local_features *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| memcpy(hdev->features, rp->features, 8); |
| |
| /* Adjust default settings according to features |
| * supported by device. */ |
| |
| if (hdev->features[0][0] & LMP_3SLOT) |
| hdev->pkt_type |= (HCI_DM3 | HCI_DH3); |
| |
| if (hdev->features[0][0] & LMP_5SLOT) |
| hdev->pkt_type |= (HCI_DM5 | HCI_DH5); |
| |
| if (hdev->features[0][1] & LMP_HV2) { |
| hdev->pkt_type |= (HCI_HV2); |
| hdev->esco_type |= (ESCO_HV2); |
| } |
| |
| if (hdev->features[0][1] & LMP_HV3) { |
| hdev->pkt_type |= (HCI_HV3); |
| hdev->esco_type |= (ESCO_HV3); |
| } |
| |
| if (lmp_esco_capable(hdev)) |
| hdev->esco_type |= (ESCO_EV3); |
| |
| if (hdev->features[0][4] & LMP_EV4) |
| hdev->esco_type |= (ESCO_EV4); |
| |
| if (hdev->features[0][4] & LMP_EV5) |
| hdev->esco_type |= (ESCO_EV5); |
| |
| if (hdev->features[0][5] & LMP_EDR_ESCO_2M) |
| hdev->esco_type |= (ESCO_2EV3); |
| |
| if (hdev->features[0][5] & LMP_EDR_ESCO_3M) |
| hdev->esco_type |= (ESCO_3EV3); |
| |
| if (hdev->features[0][5] & LMP_EDR_3S_ESCO) |
| hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_local_ext_features *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| if (hdev->max_page < rp->max_page) { |
| if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, |
| &hdev->quirks)) |
| bt_dev_warn(hdev, "broken local ext features page 2"); |
| else |
| hdev->max_page = rp->max_page; |
| } |
| |
| if (rp->page < HCI_MAX_PAGES) |
| memcpy(hdev->features[rp->page], rp->features, 8); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_buffer_size *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); |
| hdev->sco_mtu = rp->sco_mtu; |
| hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); |
| hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); |
| |
| if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { |
| hdev->sco_mtu = 64; |
| hdev->sco_pkts = 8; |
| } |
| |
| hdev->acl_cnt = hdev->acl_pkts; |
| hdev->sco_cnt = hdev->sco_pkts; |
| |
| BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, |
| hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); |
| |
| if (!hdev->acl_mtu || !hdev->acl_pkts) |
| return HCI_ERROR_INVALID_PARAMETERS; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_bd_addr *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| if (test_bit(HCI_INIT, &hdev->flags)) |
| bacpy(&hdev->bdaddr, &rp->bdaddr); |
| |
| if (hci_dev_test_flag(hdev, HCI_SETUP)) |
| bacpy(&hdev->setup_addr, &rp->bdaddr); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_local_pairing_opts *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| if (hci_dev_test_flag(hdev, HCI_SETUP) || |
| hci_dev_test_flag(hdev, HCI_CONFIG)) { |
| hdev->pairing_opts = rp->pairing_opts; |
| hdev->max_enc_key_size = rp->max_key_size; |
| } |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_page_scan_activity *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| if (test_bit(HCI_INIT, &hdev->flags)) { |
| hdev->page_scan_interval = __le16_to_cpu(rp->interval); |
| hdev->page_scan_window = __le16_to_cpu(rp->window); |
| } |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| struct hci_cp_write_page_scan_activity *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); |
| if (!sent) |
| return rp->status; |
| |
| hdev->page_scan_interval = __le16_to_cpu(sent->interval); |
| hdev->page_scan_window = __le16_to_cpu(sent->window); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_page_scan_type *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| if (test_bit(HCI_INIT, &hdev->flags)) |
| hdev->page_scan_type = rp->type; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| u8 *type; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); |
| if (type) |
| hdev->page_scan_type = *type; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_clock *rp = data; |
| struct hci_cp_read_clock *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); |
| if (!cp) |
| goto unlock; |
| |
| if (cp->which == 0x00) { |
| hdev->clock = le32_to_cpu(rp->clock); |
| goto unlock; |
| } |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); |
| if (conn) { |
| conn->clock = le32_to_cpu(rp->clock); |
| conn->clock_accuracy = le16_to_cpu(rp->accuracy); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_inq_rsp_tx_power *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->inq_tx_power = rp->tx_power; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_def_err_data_reporting *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->err_data_reporting = rp->err_data_reporting; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| struct hci_cp_write_def_err_data_reporting *cp; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); |
| if (!cp) |
| return rp->status; |
| |
| hdev->err_data_reporting = cp->err_data_reporting; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_pin_code_reply *rp = data; |
| struct hci_cp_pin_code_reply *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| hci_dev_lock(hdev); |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); |
| |
| if (rp->status) |
| goto unlock; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); |
| if (!cp) |
| goto unlock; |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); |
| if (conn) |
| conn->pin_length = cp->pin_len; |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| return rp->status; |
| } |
| |
| static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_pin_code_neg_reply *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| hci_dev_lock(hdev); |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, |
| rp->status); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_read_buffer_size *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->le_mtu = __le16_to_cpu(rp->le_mtu); |
| hdev->le_pkts = rp->le_max_pkt; |
| |
| hdev->le_cnt = hdev->le_pkts; |
| |
| BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); |
| |
| if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) |
| return HCI_ERROR_INVALID_PARAMETERS; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_read_local_features *rp = data; |
| |
| BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| memcpy(hdev->le_features, rp->features, 8); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_read_adv_tx_power *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->adv_tx_power = rp->tx_power; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_user_confirm_reply *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| hci_dev_lock(hdev); |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, |
| rp->status); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_user_confirm_reply *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| hci_dev_lock(hdev); |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, |
| ACL_LINK, 0, rp->status); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_user_confirm_reply *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| hci_dev_lock(hdev); |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, |
| 0, rp->status); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_user_confirm_reply *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| hci_dev_lock(hdev); |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, |
| ACL_LINK, 0, rp->status); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_local_oob_data *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_local_oob_ext_data *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| bdaddr_t *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| bacpy(&hdev->random_addr, sent); |
| |
| if (!bacmp(&hdev->rpa, sent)) { |
| hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); |
| queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, |
| secs_to_jiffies(hdev->rpa_timeout)); |
| } |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| struct hci_cp_le_set_default_phy *cp; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); |
| if (!cp) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| hdev->le_tx_def_phys = cp->tx_phys; |
| hdev->le_rx_def_phys = cp->rx_phys; |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| struct hci_cp_le_set_adv_set_rand_addr *cp; |
| struct adv_info *adv; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); |
| /* Update only in case the adv instance since handle 0x00 shall be using |
| * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and |
| * non-extended adverting. |
| */ |
| if (!cp || !cp->handle) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| adv = hci_find_adv_instance(hdev, cp->handle); |
| if (adv) { |
| bacpy(&adv->random_addr, &cp->bdaddr); |
| if (!bacmp(&hdev->rpa, &cp->bdaddr)) { |
| adv->rpa_expired = false; |
| queue_delayed_work(hdev->workqueue, |
| &adv->rpa_expired_cb, |
| secs_to_jiffies(hdev->rpa_timeout)); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| u8 *instance; |
| int err; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); |
| if (!instance) |
| return rp->status; |
| |
| 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); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| struct adv_info *adv, *n; |
| int err; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) |
| return rp->status; |
| |
| 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); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_read_transmit_power *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->min_le_tx_power = rp->min_le_tx_power; |
| hdev->max_le_tx_power = rp->max_le_tx_power; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| struct hci_cp_le_set_privacy_mode *cp; |
| struct hci_conn_params *params; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); |
| if (!cp) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); |
| if (params) |
| WRITE_ONCE(params->privacy_mode, cp->mode); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| __u8 *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| /* If we're doing connection initiation as peripheral. Set a |
| * timeout in case something goes wrong. |
| */ |
| if (*sent) { |
| struct hci_conn *conn; |
| |
| hci_dev_set_flag(hdev, HCI_LE_ADV); |
| |
| conn = hci_lookup_le_connect(hdev); |
| if (conn) |
| queue_delayed_work(hdev->workqueue, |
| &conn->le_conn_timeout, |
| conn->conn_timeout); |
| } else { |
| hci_dev_clear_flag(hdev, HCI_LE_ADV); |
| } |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_le_set_ext_adv_enable *cp; |
| struct hci_cp_ext_adv_set *set; |
| struct adv_info *adv = NULL, *n; |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); |
| if (!cp) |
| return rp->status; |
| |
| set = (void *)cp->data; |
| |
| hci_dev_lock(hdev); |
| |
| if (cp->num_of_sets) |
| adv = hci_find_adv_instance(hdev, set->handle); |
| |
| if (cp->enable) { |
| struct hci_conn *conn; |
| |
| hci_dev_set_flag(hdev, HCI_LE_ADV); |
| |
| if (adv && !adv->periodic) |
| adv->enabled = true; |
| |
| conn = hci_lookup_le_connect(hdev); |
| if (conn) |
| queue_delayed_work(hdev->workqueue, |
| &conn->le_conn_timeout, |
| conn->conn_timeout); |
| } else { |
| 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 |
| */ |
| list_for_each_entry_safe(adv, n, &hdev->adv_instances, |
| list) { |
| if (adv->enabled) |
| goto unlock; |
| } |
| } else { |
| /* All instances shall be considered disabled */ |
| list_for_each_entry_safe(adv, n, &hdev->adv_instances, |
| list) |
| adv->enabled = false; |
| } |
| |
| hci_dev_clear_flag(hdev, HCI_LE_ADV); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_le_set_scan_param *cp; |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); |
| if (!cp) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| hdev->le_scan_type = cp->type; |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_le_set_ext_scan_params *cp; |
| struct hci_ev_status *rp = data; |
| struct hci_cp_le_scan_phy_params *phy_param; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); |
| if (!cp) |
| return rp->status; |
| |
| phy_param = (void *)cp->data; |
| |
| hci_dev_lock(hdev); |
| |
| hdev->le_scan_type = phy_param->type; |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static bool has_pending_adv_report(struct hci_dev *hdev) |
| { |
| struct discovery_state *d = &hdev->discovery; |
| |
| return bacmp(&d->last_adv_addr, BDADDR_ANY); |
| } |
| |
| static void clear_pending_adv_report(struct hci_dev *hdev) |
| { |
| struct discovery_state *d = &hdev->discovery; |
| |
| bacpy(&d->last_adv_addr, BDADDR_ANY); |
| d->last_adv_data_len = 0; |
| } |
| |
| static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 bdaddr_type, s8 rssi, u32 flags, |
| u8 *data, u8 len) |
| { |
| struct discovery_state *d = &hdev->discovery; |
| |
| if (len > max_adv_len(hdev)) |
| return; |
| |
| bacpy(&d->last_adv_addr, bdaddr); |
| d->last_adv_addr_type = bdaddr_type; |
| d->last_adv_rssi = rssi; |
| d->last_adv_flags = flags; |
| memcpy(d->last_adv_data, data, len); |
| d->last_adv_data_len = len; |
| } |
| |
| static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) |
| { |
| hci_dev_lock(hdev); |
| |
| switch (enable) { |
| case LE_SCAN_ENABLE: |
| hci_dev_set_flag(hdev, HCI_LE_SCAN); |
| if (hdev->le_scan_type == LE_SCAN_ACTIVE) |
| clear_pending_adv_report(hdev); |
| hci_discovery_set_state(hdev, DISCOVERY_FINDING); |
| break; |
| |
| case LE_SCAN_DISABLE: |
| /* We do this here instead of when setting DISCOVERY_STOPPED |
| * since the latter would potentially require waiting for |
| * inquiry to stop too. |
| */ |
| if (has_pending_adv_report(hdev)) { |
| struct discovery_state *d = &hdev->discovery; |
| |
| mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, |
| d->last_adv_addr_type, NULL, |
| d->last_adv_rssi, d->last_adv_flags, |
| d->last_adv_data, |
| d->last_adv_data_len, NULL, 0, 0); |
| } |
| |
| /* Cancel this timer so that we don't try to disable scanning |
| * when it's already disabled. |
| */ |
| cancel_delayed_work(&hdev->le_scan_disable); |
| |
| hci_dev_clear_flag(hdev, HCI_LE_SCAN); |
| |
| /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we |
| * interrupted scanning due to a connect request. Mark |
| * 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) |
| queue_work(hdev->workqueue, &hdev->reenable_adv_work); |
| |
| break; |
| |
| default: |
| bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", |
| enable); |
| break; |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_le_set_scan_enable *cp; |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); |
| if (!cp) |
| return rp->status; |
| |
| le_set_scan_enable_complete(hdev, cp->enable); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_le_set_ext_scan_enable *cp; |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); |
| if (!cp) |
| return rp->status; |
| |
| le_set_scan_enable_complete(hdev, cp->enable); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_read_num_supported_adv_sets *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, |
| rp->num_of_sets); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->le_num_of_adv_sets = rp->num_of_sets; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_read_accept_list_size *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->le_accept_list_size = rp->size; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| hci_bdaddr_list_clear(&hdev->le_accept_list); |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_le_add_to_accept_list *sent; |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, |
| sent->bdaddr_type); |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_le_del_from_accept_list *sent; |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, |
| sent->bdaddr_type); |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_read_supported_states *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| memcpy(hdev->le_states, rp->le_states, 8); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_read_def_data_len *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); |
| hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_le_write_def_data_len *sent; |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); |
| if (!sent) |
| return rp->status; |
| |
| hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); |
| hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_le_add_to_resolv_list *sent; |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, |
| sent->bdaddr_type, sent->peer_irk, |
| sent->local_irk); |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_le_del_from_resolv_list *sent; |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, |
| sent->bdaddr_type); |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| hci_bdaddr_list_clear(&hdev->le_resolv_list); |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_read_resolv_list_size *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->le_resolv_list_size = rp->size; |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| __u8 *sent; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| if (*sent) |
| hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); |
| else |
| hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_read_max_data_len *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); |
| hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); |
| hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); |
| hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_write_le_host_supported *sent; |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| if (sent->le) { |
| hdev->features[1][0] |= LMP_HOST_LE; |
| hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
| } else { |
| hdev->features[1][0] &= ~LMP_HOST_LE; |
| hci_dev_clear_flag(hdev, HCI_LE_ENABLED); |
| hci_dev_clear_flag(hdev, HCI_ADVERTISING); |
| } |
| |
| if (sent->simul) |
| hdev->features[1][0] |= LMP_HOST_LE_BREDR; |
| else |
| hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_le_set_adv_param *cp; |
| struct hci_ev_status *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); |
| if (!cp) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| hdev->adv_addr_type = cp->own_address_type; |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_set_ext_adv_params *rp = data; |
| struct hci_cp_le_set_ext_adv_params *cp; |
| struct adv_info *adv_instance; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); |
| if (!cp) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| hdev->adv_addr_type = cp->own_addr_type; |
| if (!cp->handle) { |
| /* Store in hdev for instance 0 */ |
| hdev->adv_tx_power = rp->tx_power; |
| } else { |
| adv_instance = hci_find_adv_instance(hdev, cp->handle); |
| if (adv_instance) |
| adv_instance->tx_power = rp->tx_power; |
| } |
| /* Update adv data as tx power is known now */ |
| hci_update_adv_data(hdev, cp->handle); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_read_rssi *rp = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); |
| if (conn) |
| conn->rssi = rp->rssi; |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_cp_read_tx_power *sent; |
| struct hci_rp_read_tx_power *rp = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); |
| if (!sent) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); |
| if (!conn) |
| goto unlock; |
| |
| switch (sent->type) { |
| case 0x00: |
| conn->tx_power = rp->tx_power; |
| break; |
| case 0x01: |
| conn->max_tx_power = rp->tx_power; |
| break; |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| return rp->status; |
| } |
| |
| static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| u8 *mode; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); |
| if (mode) |
| hdev->ssp_debug_mode = *mode; |
| |
| return rp->status; |
| } |
| |
| static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) |
| { |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (status) |
| return; |
| |
| if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY)) |
| set_bit(HCI_INQUIRY, &hdev->flags); |
| } |
| |
| static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) |
| { |
| struct hci_cp_create_conn *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); |
| |
| bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); |
| |
| if (status) { |
| if (conn && conn->state == BT_CONNECT) { |
| conn->state = BT_CLOSED; |
| hci_connect_cfm(conn, status); |
| hci_conn_del(conn); |
| } |
| } else { |
| if (!conn) { |
| conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr, |
| HCI_ROLE_MASTER); |
| if (IS_ERR(conn)) |
| bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) |
| { |
| struct hci_cp_add_sco *cp; |
| struct hci_conn *acl; |
| struct hci_link *link; |
| __u16 handle; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); |
| if (!cp) |
| return; |
| |
| handle = __le16_to_cpu(cp->handle); |
| |
| bt_dev_dbg(hdev, "handle 0x%4.4x", handle); |
| |
| hci_dev_lock(hdev); |
| |
| acl = hci_conn_hash_lookup_handle(hdev, handle); |
| if (acl) { |
| link = list_first_entry_or_null(&acl->link_list, |
| struct hci_link, list); |
| if (link && link->conn) { |
| link->conn->state = BT_CLOSED; |
| |
| hci_connect_cfm(link->conn, status); |
| hci_conn_del(link->conn); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) |
| { |
| struct hci_cp_auth_requested *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); |
| if (conn) { |
| if (conn->state == BT_CONFIG) { |
| hci_connect_cfm(conn, status); |
| hci_conn_drop(conn); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) |
| { |
| struct hci_cp_set_conn_encrypt *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); |
| if (conn) { |
| if (conn->state == BT_CONFIG) { |
| hci_connect_cfm(conn, status); |
| hci_conn_drop(conn); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static int hci_outgoing_auth_needed(struct hci_dev *hdev, |
| struct hci_conn *conn) |
| { |
| if (conn->state != BT_CONFIG || !conn->out) |
| return 0; |
| |
| if (conn->pending_sec_level == BT_SECURITY_SDP) |
| return 0; |
| |
| /* Only request authentication for SSP connections or non-SSP |
| * devices with sec_level MEDIUM or HIGH or if MITM protection |
| * is requested. |
| */ |
| if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && |
| conn->pending_sec_level != BT_SECURITY_FIPS && |
| conn->pending_sec_level != BT_SECURITY_HIGH && |
| conn->pending_sec_level != BT_SECURITY_MEDIUM) |
| return 0; |
| |
| return 1; |
| } |
| |
| static int hci_resolve_name(struct hci_dev *hdev, |
| struct inquiry_entry *e) |
| { |
| struct hci_cp_remote_name_req cp; |
| |
| memset(&cp, 0, sizeof(cp)); |
| |
| bacpy(&cp.bdaddr, &e->data.bdaddr); |
| cp.pscan_rep_mode = e->data.pscan_rep_mode; |
| cp.pscan_mode = e->data.pscan_mode; |
| cp.clock_offset = e->data.clock_offset; |
| |
| return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); |
| } |
| |
| static bool hci_resolve_next_name(struct hci_dev *hdev) |
| { |
| struct discovery_state *discov = &hdev->discovery; |
| struct inquiry_entry *e; |
| |
| if (list_empty(&discov->resolve)) |
| return false; |
| |
| /* We should stop if we already spent too much time resolving names. */ |
| if (time_after(jiffies, discov->name_resolve_timeout)) { |
| bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); |
| return false; |
| } |
| |
| e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); |
| if (!e) |
| return false; |
| |
| if (hci_resolve_name(hdev, e) == 0) { |
| e->name_state = NAME_PENDING; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, |
| bdaddr_t *bdaddr, u8 *name, u8 name_len) |
| { |
| struct discovery_state *discov = &hdev->discovery; |
| struct inquiry_entry *e; |
| |
| /* Update the mgmt connected state if necessary. Be careful with |
| * conn objects that exist but are not (yet) connected however. |
| * Only those in BT_CONFIG or BT_CONNECTED states can be |
| * considered connected. |
| */ |
| if (conn && (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) |
| mgmt_device_connected(hdev, conn, name, name_len); |
| |
| if (discov->state == DISCOVERY_STOPPED) |
| return; |
| |
| if (discov->state == DISCOVERY_STOPPING) |
| goto discov_complete; |
| |
| if (discov->state != DISCOVERY_RESOLVING) |
| return; |
| |
| e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); |
| /* If the device was not found in a list of found devices names of which |
| * are pending. there is no need to continue resolving a next name as it |
| * will be done upon receiving another Remote Name Request Complete |
| * Event */ |
| if (!e) |
| return; |
| |
| list_del(&e->list); |
| |
| e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; |
| mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, |
| name, name_len); |
| |
| if (hci_resolve_next_name(hdev)) |
| return; |
| |
| discov_complete: |
| hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
| } |
| |
| static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) |
| { |
| struct hci_cp_remote_name_req *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| /* If successful wait for the name req complete event before |
| * checking for the need to do authentication */ |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); |
| |
| if (!conn) |
| goto unlock; |
| |
| if (!hci_outgoing_auth_needed(hdev, conn)) |
| goto unlock; |
| |
| if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
| struct hci_cp_auth_requested auth_cp; |
| |
| set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); |
| |
| auth_cp.handle = __cpu_to_le16(conn->handle); |
| hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, |
| sizeof(auth_cp), &auth_cp); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) |
| { |
| struct hci_cp_read_remote_features *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); |
| if (conn) { |
| if (conn->state == BT_CONFIG) { |
| hci_connect_cfm(conn, status); |
| hci_conn_drop(conn); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) |
| { |
| struct hci_cp_read_remote_ext_features *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); |
| if (conn) { |
| if (conn->state == BT_CONFIG) { |
| hci_connect_cfm(conn, status); |
| hci_conn_drop(conn); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, |
| __u8 status) |
| { |
| struct hci_conn *acl; |
| struct hci_link *link; |
| |
| bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); |
| |
| hci_dev_lock(hdev); |
| |
| acl = hci_conn_hash_lookup_handle(hdev, handle); |
| if (acl) { |
| link = list_first_entry_or_null(&acl->link_list, |
| struct hci_link, list); |
| if (link && link->conn) { |
| link->conn->state = BT_CLOSED; |
| |
| hci_connect_cfm(link->conn, status); |
| hci_conn_del(link->conn); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) |
| { |
| struct hci_cp_setup_sync_conn *cp; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); |
| if (!cp) |
| return; |
| |
| hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); |
| } |
| |
| static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) |
| { |
| struct hci_cp_enhanced_setup_sync_conn *cp; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); |
| if (!cp) |
| return; |
| |
| hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); |
| } |
| |
| static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) |
| { |
| struct hci_cp_sniff_mode *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); |
| if (conn) { |
| clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); |
| |
| if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) |
| hci_sco_setup(conn, status); |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) |
| { |
| struct hci_cp_exit_sniff_mode *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); |
| if (conn) { |
| clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); |
| |
| if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) |
| hci_sco_setup(conn, status); |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| 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; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", 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); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); |
| 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_enable_advertising(hdev); |
| } |
| |
| /* Inform sockets conn is gone before we delete it */ |
| hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED); |
| |
| goto done; |
| } |
| |
| mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); |
| |
| if (conn->type == ACL_LINK) { |
| if (test_and_clear_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: |
| hci_pend_le_list_del_init(params); |
| hci_pend_le_list_add(params, &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); |
| } |
| |
| static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) |
| { |
| /* When using controller based address resolution, then the new |
| * address types 0x02 and 0x03 are used. These types need to be |
| * converted back into either public address or random address type |
| */ |
| switch (type) { |
| case ADDR_LE_DEV_PUBLIC_RESOLVED: |
| if (resolved) |
| *resolved = true; |
| return ADDR_LE_DEV_PUBLIC; |
| case ADDR_LE_DEV_RANDOM_RESOLVED: |
| if (resolved) |
| *resolved = true; |
| return ADDR_LE_DEV_RANDOM; |
| } |
| |
| if (resolved) |
| *resolved = false; |
| return type; |
| } |
| |
| static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, |
| u8 peer_addr_type, u8 own_address_type, |
| u8 filter_policy) |
| { |
| struct hci_conn *conn; |
| |
| conn = hci_conn_hash_lookup_le(hdev, peer_addr, |
| peer_addr_type); |
| if (!conn) |
| return; |
| |
| own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); |
| |
| /* Store the initiator and responder address information which |
| * is needed for SMP. These values will not change during the |
| * lifetime of the connection. |
| */ |
| conn->init_addr_type = own_address_type; |
| if (own_address_type == ADDR_LE_DEV_RANDOM) |
| bacpy(&conn->init_addr, &hdev->random_addr); |
| else |
| bacpy(&conn->init_addr, &hdev->bdaddr); |
| |
| conn->resp_addr_type = peer_addr_type; |
| bacpy(&conn->resp_addr, peer_addr); |
| } |
| |
| static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) |
| { |
| struct hci_cp_le_create_conn *cp; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| /* All connection failure handling is taken care of by the |
| * hci_conn_failed function which is triggered by the HCI |
| * request completion callbacks used for connecting. |
| */ |
| if (status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, |
| cp->own_address_type, cp->filter_policy); |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) |
| { |
| struct hci_cp_le_ext_create_conn *cp; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| /* All connection failure handling is taken care of by the |
| * hci_conn_failed function which is triggered by the HCI |
| * request completion callbacks used for connecting. |
| */ |
| if (status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, |
| cp->own_addr_type, cp->filter_policy); |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) |
| { |
| struct hci_cp_le_read_remote_features *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); |
| if (conn) { |
| if (conn->state == BT_CONFIG) { |
| hci_connect_cfm(conn, status); |
| hci_conn_drop(conn); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) |
| { |
| struct hci_cp_le_start_enc *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); |
| if (!cp) |
| goto unlock; |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); |
| if (!conn) |
| goto unlock; |
| |
| if (conn->state != BT_CONNECTED) |
| goto unlock; |
| |
| hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); |
| hci_conn_drop(conn); |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) |
| { |
| struct hci_cp_switch_role *cp; |
| struct hci_conn *conn; |
| |
| BT_DBG("%s status 0x%2.2x", hdev->name, status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); |
| if (conn) |
| clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *ev = data; |
| struct discovery_state *discov = &hdev->discovery; |
| struct inquiry_entry *e; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) |
| return; |
| |
| smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ |
| wake_up_bit(&hdev->flags, HCI_INQUIRY); |
| |
| if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| if (discov->state != DISCOVERY_FINDING) |
| goto unlock; |
| |
| if (list_empty(&discov->resolve)) { |
| /* When BR/EDR inquiry is active and no LE scanning is in |
| * progress, then change discovery state to indicate completion. |
| * |
| * When running LE scanning and BR/EDR inquiry simultaneously |
| * and the LE scan already finished, then change the discovery |
| * state to indicate completion. |
| */ |
| if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || |
| !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) |
| hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
| goto unlock; |
| } |
| |
| e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); |
| if (e && hci_resolve_name(hdev, e) == 0) { |
| e->name_state = NAME_PENDING; |
| hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); |
| discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; |
| } else { |
| /* When BR/EDR inquiry is active and no LE scanning is in |
| * progress, then change discovery state to indicate completion. |
| * |
| * When running LE scanning and BR/EDR inquiry simultaneously |
| * and the LE scan already finished, then change the discovery |
| * state to indicate completion. |
| */ |
| if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || |
| !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) |
| hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_inquiry_result *ev = edata; |
| struct inquiry_data data; |
| int i; |
| |
| if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, |
| flex_array_size(ev, info, ev->num))) |
| return; |
| |
| bt_dev_dbg(hdev, "num %d", ev->num); |
| |
| if (!ev->num) |
| return; |
| |
| if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| for (i = 0; i < ev->num; i++) { |
| struct inquiry_info *info = &ev->info[i]; |
| u32 flags; |
| |
| bacpy(&data.bdaddr, &info->bdaddr); |
| data.pscan_rep_mode = info->pscan_rep_mode; |
| data.pscan_period_mode = info->pscan_period_mode; |
| data.pscan_mode = info->pscan_mode; |
| memcpy(data.dev_class, info->dev_class, 3); |
| data.clock_offset = info->clock_offset; |
| data.rssi = HCI_RSSI_INVALID; |
| data.ssp_mode = 0x00; |
| |
| flags = hci_inquiry_cache_update(hdev, &data, false); |
| |
| mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, |
| info->dev_class, HCI_RSSI_INVALID, |
| flags, NULL, 0, NULL, 0, 0); |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_conn_complete *ev = data; |
| struct hci_conn *conn; |
| u8 status = ev->status; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); |
| if (!conn) { |
| /* In case of error status and there is no connection pending |
| * just unlock as there is nothing to cleanup. |
| */ |
| if (ev->status) |
| goto unlock; |
| |
| /* Connection may not exist if auto-connected. Check the bredr |
| * allowlist to see if this device is allowed to auto connect. |
| * If link is an ACL type, create a connection class |
| * automatically. |
| * |
| * Auto-connect will only occur if the event filter is |
| * programmed with a given address. Right now, event filter is |
| * only used during suspend. |
| */ |
| if (ev->link_type == ACL_LINK && |
| hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, |
| &ev->bdaddr, |
| BDADDR_BREDR)) { |
| conn = hci_conn_add_unset(hdev, ev->link_type, |
| &ev->bdaddr, HCI_ROLE_SLAVE); |
| if (IS_ERR(conn)) { |
| bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); |
| goto unlock; |
| } |
| } else { |
| if (ev->link_type != SCO_LINK) |
| goto unlock; |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, |
| &ev->bdaddr); |
| if (!conn) |
| goto unlock; |
| |
| conn->type = SCO_LINK; |
| } |
| } |
| |
| /* The HCI_Connection_Complete event is only sent once per connection. |
| * Processing it more than once per connection can corrupt kernel memory. |
| * |
| * As the connection handle is set here for the first time, it indicates |
| * whether the connection is already set up. |
| */ |
| if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { |
| bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); |
| goto unlock; |
| } |
| |
| if (!status) { |
| status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); |
| if (status) |
| goto done; |
| |
| if (conn->type == ACL_LINK) { |
| conn->state = BT_CONFIG; |
| hci_conn_hold(conn); |
| |
| if (!conn->out && !hci_conn_ssp_enabled(conn) && |
| !hci_find_link_key(hdev, &ev->bdaddr)) |
| conn->disc_timeout = HCI_PAIRING_TIMEOUT; |
| else |
| conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
| } else |
| conn->state = BT_CONNECTED; |
| |
| hci_debugfs_create_conn(conn); |
| hci_conn_add_sysfs(conn); |
| |
| if (test_bit(HCI_AUTH, &hdev->flags)) |
| set_bit(HCI_CONN_AUTH, &conn->flags); |
| |
| if (test_bit(HCI_ENCRYPT, &hdev->flags)) |
| set_bit(HCI_CONN_ENCRYPT, &conn->flags); |
| |
| /* "Link key request" completed ahead of "connect request" completes */ |
| if (ev->encr_mode == 1 && !test_bit(HCI_CONN_ENCRYPT, &conn->flags) && |
| ev->link_type == ACL_LINK) { |
| struct link_key *key; |
| struct hci_cp_read_enc_key_size cp; |
| |
| key = hci_find_link_key(hdev, &ev->bdaddr); |
| if (key) { |
| set_bit(HCI_CONN_ENCRYPT, &conn->flags); |
| |
| if (!read_key_size_capable(hdev)) { |
| conn->enc_key_size = HCI_LINK_KEY_SIZE; |
| } else { |
| cp.handle = cpu_to_le16(conn->handle); |
| if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, |
| sizeof(cp), &cp)) { |
| bt_dev_err(hdev, "sending read key size failed"); |
| conn->enc_key_size = HCI_LINK_KEY_SIZE; |
| } |
| } |
| |
| hci_encrypt_cfm(conn, ev->status); |
| } |
| } |
| |
| /* Get remote features */ |
| if (conn->type == ACL_LINK) { |
| struct hci_cp_read_remote_features cp; |
| cp.handle = ev->handle; |
| hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, |
| sizeof(cp), &cp); |
| |
| hci_update_scan(hdev); |
| } |
| |
| /* Set packet type for incoming connection */ |
| if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { |
| struct hci_cp_change_conn_ptype cp; |
| cp.handle = ev->handle; |
| cp.pkt_type = cpu_to_le16(conn->pkt_type); |
| hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), |
| &cp); |
| } |
| } |
| |
| if (conn->type == ACL_LINK) |
| hci_sco_setup(conn, ev->status); |
| |
| done: |
| if (status) { |
| hci_conn_failed(conn, status); |
| } else if (ev->link_type == SCO_LINK) { |
| switch (conn->setting & SCO_AIRMODE_MASK) { |
| case SCO_AIRMODE_CVSD: |
| if (hdev->notify) |
| hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); |
| break; |
| } |
| |
| hci_connect_cfm(conn, status); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| { |
| struct hci_cp_reject_conn_req cp; |
| |
| bacpy(&cp.bdaddr, bdaddr); |
| cp.reason = HCI_ERROR_REJ_BAD_ADDR; |
| hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); |
| } |
| |
| static void hci_conn_request_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_conn_request *ev = data; |
| int mask = hdev->link_mode; |
| struct inquiry_entry *ie; |
| struct hci_conn *conn; |
| __u8 flags = 0; |
| |
| bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); |
| |
| /* Reject incoming connection from device with same BD ADDR against |
| * CVE-2020-26555 |
| */ |
| if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { |
| bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", |
| &ev->bdaddr); |
| hci_reject_conn(hdev, &ev->bdaddr); |
| return; |
| } |
| |
| mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, |
| &flags); |
| |
| if (!(mask & HCI_LM_ACCEPT)) { |
| hci_reject_conn(hdev, &ev->bdaddr); |
| return; |
| } |
| |
| hci_dev_lock(hdev); |
| |
| if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, |
| BDADDR_BREDR)) { |
| hci_reject_conn(hdev, &ev->bdaddr); |
| goto unlock; |
| } |
| |
| /* Require HCI_CONNECTABLE or an accept list entry to accept the |
| * connection. These features are only touched through mgmt so |
| * only do the checks if HCI_MGMT is set. |
| */ |
| if (hci_dev_test_flag(hdev, HCI_MGMT) && |
| !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && |
| !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, |
| BDADDR_BREDR)) { |
| hci_reject_conn(hdev, &ev->bdaddr); |
| goto unlock; |
| } |
| |
| /* Connection accepted */ |
| |
| ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); |
| if (ie) |
| memcpy(ie->data.dev_class, ev->dev_class, 3); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, |
| &ev->bdaddr); |
| if (!conn) { |
| conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, |
| HCI_ROLE_SLAVE); |
| if (IS_ERR(conn)) { |
| bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); |
| goto unlock; |
| } |
| } |
| |
| memcpy(conn->dev_class, ev->dev_class, 3); |
| |
| hci_dev_unlock(hdev); |
| |
| if (ev->link_type == ACL_LINK || |
| (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { |
| struct hci_cp_accept_conn_req cp; |
| conn->state = BT_CONNECT; |
| |
| bacpy(&cp.bdaddr, &ev->bdaddr); |
| |
| if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) |
| cp.role = 0x00; /* Become central */ |
| else |
| cp.role = 0x01; /* Remain peripheral */ |
| |
| hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); |
| } else if (!(flags & HCI_PROTO_DEFER)) { |
| struct hci_cp_accept_sync_conn_req cp; |
| conn->state = BT_CONNECT; |
| |
| bacpy(&cp.bdaddr, &ev->bdaddr); |
| cp.pkt_type = cpu_to_le16(conn->pkt_type); |
| |
| cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
| cp.rx_bandwidth = cpu_to_le32(0x00001f40); |
| cp.max_latency = cpu_to_le16(0xffff); |
| cp.content_format = cpu_to_le16(hdev->voice_setting); |
| cp.retrans_effort = 0xff; |
| |
| hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), |
| &cp); |
| } else { |
| conn->state = BT_CONNECT2; |
| hci_connect_cfm(conn, 0); |
| } |
| |
| return; |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static u8 hci_to_mgmt_reason(u8 err) |
| { |
| switch (err) { |
| case HCI_ERROR_CONNECTION_TIMEOUT: |
| return MGMT_DEV_DISCONN_TIMEOUT; |
| case HCI_ERROR_REMOTE_USER_TERM: |
| case HCI_ERROR_REMOTE_LOW_RESOURCES: |
| case HCI_ERROR_REMOTE_POWER_OFF: |
| return MGMT_DEV_DISCONN_REMOTE; |
| case HCI_ERROR_LOCAL_HOST_TERM: |
| return MGMT_DEV_DISCONN_LOCAL_HOST; |
| default: |
| return MGMT_DEV_DISCONN_UNKNOWN; |
| } |
| } |
| |
| static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_disconn_complete *ev = data; |
| u8 reason; |
| struct hci_conn_params *params; |
| struct hci_conn *conn; |
| bool mgmt_connected; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (!conn) |
| goto unlock; |
| |
| if (ev->status) { |
| mgmt_disconnect_failed(hdev, &conn->dst, conn->type, |
| conn->dst_type, ev->status); |
| goto unlock; |
| } |
| |
| conn->state = BT_CLOSED; |
| |
| mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); |
| |
| if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) |
| reason = MGMT_DEV_DISCONN_AUTH_FAILURE; |
| else |
| reason = hci_to_mgmt_reason(ev->reason); |
| |
| mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, |
| reason, mgmt_connected); |
| |
| if (conn->type == ACL_LINK) { |
| if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) |
| hci_remove_link_key(hdev, &conn->dst); |
| |
| hci_update_scan(hdev); |
| } |
| |
| params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); |
| if (params) { |
| switch (params->auto_connect) { |
| case HCI_AUTO_CONN_LINK_LOSS: |
| if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) |
| break; |
| fallthrough; |
| |
| case HCI_AUTO_CONN_DIRECT: |
| case HCI_AUTO_CONN_ALWAYS: |
| hci_pend_le_list_del_init(params); |
| hci_pend_le_list_add(params, &hdev->pend_le_conns); |
| hci_update_passive_scan(hdev); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| hci_disconn_cfm(conn, ev->reason); |
| |
| /* Re-enable advertising if necessary, since it might |
| * have been disabled by the connection. From the |
| * HCI_LE_Set_Advertise_Enable command description in |
| * the core specification (v4.0): |
| * "The Controller shall continue advertising until the Host |
| * issues an LE_Set_Advertise_Enable command with |
| * Advertising_Enable set to 0x00 (Advertising is disabled) |
| * or until a connection is created or until the Advertising |
| * is timed out due to Directed Advertising." |
| */ |
| if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { |
| hdev->cur_adv_instance = conn->adv_instance; |
| hci_enable_advertising(hdev); |
| } |
| |
| hci_conn_del(conn); |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_auth_complete *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (!conn) |
| goto unlock; |
| |
| if (!ev->status) { |
| clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); |
| set_bit(HCI_CONN_AUTH, &conn->flags); |
| conn->sec_level = conn->pending_sec_level; |
| } else { |
| if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) |
| set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); |
| |
| mgmt_auth_failed(conn, ev->status); |
| } |
| |
| clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); |
| |
| if (conn->state == BT_CONFIG) { |
| if (!ev->status && hci_conn_ssp_enabled(conn)) { |
| struct hci_cp_set_conn_encrypt cp; |
| cp.handle = ev->handle; |
| cp.encrypt = 0x01; |
| hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), |
| &cp); |
| } else { |
| conn->state = BT_CONNECTED; |
| hci_connect_cfm(conn, ev->status); |
| hci_conn_drop(conn); |
| } |
| } else { |
| hci_auth_cfm(conn, ev->status); |
| |
| hci_conn_hold(conn); |
| conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
| hci_conn_drop(conn); |
| } |
| |
| if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { |
| if (!ev->status) { |
| struct hci_cp_set_conn_encrypt cp; |
| cp.handle = ev->handle; |
| cp.encrypt = 0x01; |
| hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), |
| &cp); |
| } else { |
| clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); |
| hci_encrypt_cfm(conn, ev->status); |
| } |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_remote_name_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_remote_name *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| |
| if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
| goto check_auth; |
| |
| if (ev->status == 0) |
| hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, |
| strnlen(ev->name, HCI_MAX_NAME_LENGTH)); |
| else |
| hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); |
| |
| check_auth: |
| if (!conn) |
| goto unlock; |
| |
| if (!hci_outgoing_auth_needed(hdev, conn)) |
| goto unlock; |
| |
| if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
| struct hci_cp_auth_requested cp; |
| |
| set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); |
| |
| cp.handle = __cpu_to_le16(conn->handle); |
| hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_encrypt_change *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (!conn) |
| goto unlock; |
| |
| if (!ev->status) { |
| if (ev->encrypt) { |
| /* Encryption implies authentication */ |
| set_bit(HCI_CONN_AUTH, &conn->flags); |
| set_bit(HCI_CONN_ENCRYPT, &conn->flags); |
| conn->sec_level = conn->pending_sec_level; |
| |
| /* P-256 authentication key implies FIPS */ |
| if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) |
| set_bit(HCI_CONN_FIPS, &conn->flags); |
| |
| if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || |
| conn->type == LE_LINK) |
| set_bit(HCI_CONN_AES_CCM, &conn->flags); |
| } else { |
| clear_bit(HCI_CONN_ENCRYPT, &conn->flags); |
| clear_bit(HCI_CONN_AES_CCM, &conn->flags); |
| } |
| } |
| |
| /* We should disregard the current RPA and generate a new one |
| * whenever the encryption procedure fails. |
| */ |
| if (ev->status && conn->type == LE_LINK) { |
| hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
| hci_adv_instances_set_rpa_expired(hdev, true); |
| } |
| |
| clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); |
| |
| /* Check link security requirements are met */ |
| if (!hci_conn_check_link_mode(conn)) |
| ev->status = HCI_ERROR_AUTH_FAILURE; |
| |
| if (ev->status && conn->state == BT_CONNECTED) { |
| if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) |
| set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); |
| |
| /* Notify upper layers so they can cleanup before |
| * disconnecting. |
| */ |
| hci_encrypt_cfm(conn, ev->status); |
| hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); |
| hci_conn_drop(conn); |
| goto unlock; |
| } |
| |
| /* Try reading the encryption key size for encrypted ACL links */ |
| if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { |
| struct hci_cp_read_enc_key_size cp; |
| |
| /* Only send HCI_Read_Encryption_Key_Size if the |
| * controller really supports it. If it doesn't, assume |
| * the default size (16). |
| */ |
| if (!read_key_size_capable(hdev)) { |
| conn->enc_key_size = HCI_LINK_KEY_SIZE; |
| goto notify; |
| } |
| |
| cp.handle = cpu_to_le16(conn->handle); |
| if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, |
| sizeof(cp), &cp)) { |
| bt_dev_err(hdev, "sending read key size failed"); |
| conn->enc_key_size = HCI_LINK_KEY_SIZE; |
| goto notify; |
| } |
| |
| goto unlock; |
| } |
| |
| /* Set the default Authenticated Payload Timeout after |
| * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B |
| * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be |
| * sent when the link is active and Encryption is enabled, the conn |
| * type can be either LE or ACL and controller must support LMP Ping. |
| * Ensure for AES-CCM encryption as well. |
| */ |
| if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && |
| test_bit(HCI_CONN_AES_CCM, &conn->flags) && |
| ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || |
| (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { |
| struct hci_cp_write_auth_payload_to cp; |
| |
| cp.handle = cpu_to_le16(conn->handle); |
| cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); |
| if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, |
| sizeof(cp), &cp)) |
| bt_dev_err(hdev, "write auth payload timeout failed"); |
| } |
| |
| notify: |
| hci_encrypt_cfm(conn, ev->status); |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_change_link_key_complete *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (conn) { |
| if (!ev->status) |
| set_bit(HCI_CONN_SECURE, &conn->flags); |
| |
| clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); |
| |
| hci_key_change_cfm(conn, ev->status); |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_remote_features_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_remote_features *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (!conn) |
| goto unlock; |
| |
| if (!ev->status) |
| memcpy(conn->features[0], ev->features, 8); |
| |
| if (conn->state != BT_CONFIG) |
| goto unlock; |
| |
| if (!ev->status && lmp_ext_feat_capable(hdev) && |
| lmp_ext_feat_capable(conn)) { |
| struct hci_cp_read_remote_ext_features cp; |
| cp.handle = ev->handle; |
| cp.page = 0x01; |
| hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, |
| sizeof(cp), &cp); |
| goto unlock; |
| } |
| |
| if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { |
| struct hci_cp_remote_name_req cp; |
| memset(&cp, 0, sizeof(cp)); |
| bacpy(&cp.bdaddr, &conn->dst); |
| cp.pscan_rep_mode = 0x02; |
| hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); |
| } else { |
| mgmt_device_connected(hdev, conn, NULL, 0); |
| } |
| |
| if (!hci_outgoing_auth_needed(hdev, conn)) { |
| conn->state = BT_CONNECTED; |
| hci_connect_cfm(conn, ev->status); |
| hci_conn_drop(conn); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) |
| { |
| cancel_delayed_work(&hdev->cmd_timer); |
| |
| rcu_read_lock(); |
| if (!test_bit(HCI_RESET, &hdev->flags)) { |
| if (ncmd) { |
| cancel_delayed_work(&hdev->ncmd_timer); |
| atomic_set(&hdev->cmd_cnt, 1); |
| } else { |
| if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) |
| queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, |
| HCI_NCMD_TIMEOUT); |
| } |
| } |
| rcu_read_unlock(); |
| } |
| |
| static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_read_buffer_size_v2 *rp = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); |
| hdev->le_pkts = rp->acl_max_pkt; |
| hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); |
| hdev->iso_pkts = rp->iso_max_pkt; |
| |
| hdev->le_cnt = hdev->le_pkts; |
| hdev->iso_cnt = hdev->iso_pkts; |
| |
| BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, |
| hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); |
| |
| if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) |
| return HCI_ERROR_INVALID_PARAMETERS; |
| |
| return rp->status; |
| } |
| |
| static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) |
| { |
| struct hci_conn *conn, *tmp; |
| |
| lockdep_assert_held(&hdev->lock); |
| |
| list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { |
| if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) || |
| conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) |
| continue; |
| |
| if (HCI_CONN_HANDLE_UNSET(conn->handle)) |
| hci_conn_failed(conn, status); |
| } |
| } |
| |
| static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_set_cig_params *rp = data; |
| struct hci_cp_le_set_cig_params *cp; |
| struct hci_conn *conn; |
| u8 status = rp->status; |
| bool pending = false; |
| int i; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); |
| if (!rp->status && (!cp || rp->num_handles != cp->num_cis || |
| rp->cig_id != cp->cig_id)) { |
| bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); |
| status = HCI_ERROR_UNSPECIFIED; |
| } |
| |
| hci_dev_lock(hdev); |
| |
| /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 |
| * |
| * If the Status return parameter is non-zero, then the state of the CIG |
| * and its CIS configurations shall not be changed by the command. If |
| * the CIG did not already exist, it shall not be created. |
| */ |
| if (status) { |
| /* Keep current configuration, fail only the unbound CIS */ |
| hci_unbound_cis_failed(hdev, rp->cig_id, status); |
| goto unlock; |
| } |
| |
| /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 |
| * |
| * If the Status return parameter is zero, then the Controller shall |
| * set the Connection_Handle arrayed return parameter to the connection |
| * handle(s) corresponding to the CIS configurations specified in |
| * the CIS_IDs command parameter, in the same order. |
| */ |
| for (i = 0; i < rp->num_handles; ++i) { |
| conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, |
| cp->cis[i].cis_id); |
| if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) |
| continue; |
| |
| if (conn->state != BT_BOUND && conn->state != BT_CONNECT) |
| continue; |
| |
| if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) |
| continue; |
| |
| if (conn->state == BT_CONNECT) |
| pending = true; |
| } |
| |
| unlock: |
| if (pending) |
| hci_le_create_cis_pending(hdev); |
| |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_rp_le_setup_iso_path *rp = data; |
| struct hci_cp_le_setup_iso_path *cp; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); |
| if (!cp) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); |
| if (!conn) |
| goto unlock; |
| |
| if (rp->status) { |
| hci_connect_cfm(conn, rp->status); |
| hci_conn_del(conn); |
| goto unlock; |
| } |
| |
| switch (cp->direction) { |
| /* Input (Host to Controller) */ |
| case 0x00: |
| /* Only confirm connection if output only */ |
| if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) |
| hci_connect_cfm(conn, rp->status); |
| break; |
| /* Output (Controller to Host) */ |
| case 0x01: |
| /* Confirm connection since conn->iso_qos is always configured |
| * last. |
| */ |
| hci_connect_cfm(conn, rp->status); |
| |
| /* Notify device connected in case it is a BIG Sync */ |
| if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) |
| mgmt_device_connected(hdev, conn, NULL, 0); |
| |
| break; |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| return rp->status; |
| } |
| |
| static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) |
| { |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| } |
| |
| static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| struct hci_cp_le_set_per_adv_params *cp; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); |
| if (!cp) |
| return rp->status; |
| |
| /* TODO: set the conn state */ |
| return rp->status; |
| } |
| |
| static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_status *rp = data; |
| struct hci_cp_le_set_per_adv_enable *cp; |
| struct adv_info *adv = NULL, *n; |
| u8 per_adv_cnt = 0; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); |
| |
| if (rp->status) |
| return rp->status; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); |
| if (!cp) |
| return rp->status; |
| |
| hci_dev_lock(hdev); |
| |
| adv = hci_find_adv_instance(hdev, cp->handle); |
| |
| if (cp->enable) { |
| hci_dev_set_flag(hdev, HCI_LE_PER_ADV); |
| |
| if (adv) |
| adv->enabled = true; |
| } else { |
| /* If just one instance was disabled check if there are |
| * any other instance enabled before clearing HCI_LE_PER_ADV. |
| * The current periodic adv instance will be marked as |
| * disabled once extended advertising is also disabled. |
| */ |
| list_for_each_entry_safe(adv, n, &hdev->adv_instances, |
| list) { |
| if (adv->periodic && adv->enabled) |
| per_adv_cnt++; |
| } |
| |
| if (per_adv_cnt > 1) |
| goto unlock; |
| |
| hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| |
| return rp->status; |
| } |
| |
| #define HCI_CC_VL(_op, _func, _min, _max) \ |
| { \ |
| .op = _op, \ |
| .func = _func, \ |
| .min_len = _min, \ |
| .max_len = _max, \ |
| } |
| |
| #define HCI_CC(_op, _func, _len) \ |
| HCI_CC_VL(_op, _func, _len, _len) |
| |
| #define HCI_CC_STATUS(_op, _func) \ |
| HCI_CC(_op, _func, sizeof(struct hci_ev_status)) |
| |
| static const struct hci_cc { |
| u16 op; |
| u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); |
| u16 min_len; |
| u16 max_len; |
| } hci_cc_table[] = { |
| HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), |
| HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), |
| HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), |
| HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, |
| hci_cc_remote_name_req_cancel), |
| HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, |
| sizeof(struct hci_rp_role_discovery)), |
| HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, |
| sizeof(struct hci_rp_read_link_policy)), |
| HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, |
| sizeof(struct hci_rp_write_link_policy)), |
| HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, |
| sizeof(struct hci_rp_read_def_link_policy)), |
| HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, |
| hci_cc_write_def_link_policy), |
| HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), |
| HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, |
| sizeof(struct hci_rp_read_stored_link_key)), |
| HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, |
| sizeof(struct hci_rp_delete_stored_link_key)), |
| HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), |
| HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, |
| sizeof(struct hci_rp_read_local_name)), |
| HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), |
| HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), |
| HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), |
| HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), |
| HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, |
| sizeof(struct hci_rp_read_class_of_dev)), |
| HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), |
| HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, |
| sizeof(struct hci_rp_read_voice_setting)), |
| HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), |
| HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, |
| sizeof(struct hci_rp_read_num_supported_iac)), |
| HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), |
| HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), |
| HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, |
| sizeof(struct hci_rp_read_auth_payload_to)), |
| HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, |
| sizeof(struct hci_rp_write_auth_payload_to)), |
| HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, |
| sizeof(struct hci_rp_read_local_version)), |
| HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, |
| sizeof(struct hci_rp_read_local_commands)), |
| HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, |
| sizeof(struct hci_rp_read_local_features)), |
| HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, |
| sizeof(struct hci_rp_read_local_ext_features)), |
| HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, |
| sizeof(struct hci_rp_read_buffer_size)), |
| HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, |
| sizeof(struct hci_rp_read_bd_addr)), |
| HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, |
| sizeof(struct hci_rp_read_local_pairing_opts)), |
| HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, |
| sizeof(struct hci_rp_read_page_scan_activity)), |
| HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, |
| hci_cc_write_page_scan_activity), |
| HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, |
| sizeof(struct hci_rp_read_page_scan_type)), |
| HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), |
| HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, |
| sizeof(struct hci_rp_read_clock)), |
| HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, |
| sizeof(struct hci_rp_read_enc_key_size)), |
| HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, |
| sizeof(struct hci_rp_read_inq_rsp_tx_power)), |
| HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, |
| hci_cc_read_def_err_data_reporting, |
| sizeof(struct hci_rp_read_def_err_data_reporting)), |
| HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, |
| hci_cc_write_def_err_data_reporting), |
| HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, |
| sizeof(struct hci_rp_pin_code_reply)), |
| HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, |
| sizeof(struct hci_rp_pin_code_neg_reply)), |
| HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, |
| sizeof(struct hci_rp_read_local_oob_data)), |
| HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, |
| sizeof(struct hci_rp_read_local_oob_ext_data)), |
| HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, |
| sizeof(struct hci_rp_le_read_buffer_size)), |
| HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, |
| sizeof(struct hci_rp_le_read_local_features)), |
| HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, |
| sizeof(struct hci_rp_le_read_adv_tx_power)), |
| HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, |
| sizeof(struct hci_rp_user_confirm_reply)), |
| HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, |
| sizeof(struct hci_rp_user_confirm_reply)), |
| HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, |
| sizeof(struct hci_rp_user_confirm_reply)), |
| HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, |
| sizeof(struct hci_rp_user_confirm_reply)), |
| HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), |
| HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), |
| HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), |
| HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), |
| HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, |
| hci_cc_le_read_accept_list_size, |
| sizeof(struct hci_rp_le_read_accept_list_size)), |
| HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), |
| HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, |
| hci_cc_le_add_to_accept_list), |
| HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, |
| hci_cc_le_del_from_accept_list), |
| HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, |
| sizeof(struct hci_rp_le_read_supported_states)), |
| HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, |
| sizeof(struct hci_rp_le_read_def_data_len)), |
| HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, |
| hci_cc_le_write_def_data_len), |
| HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, |
| hci_cc_le_add_to_resolv_list), |
| HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, |
| hci_cc_le_del_from_resolv_list), |
| HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, |
| hci_cc_le_clear_resolv_list), |
| HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, |
| sizeof(struct hci_rp_le_read_resolv_list_size)), |
| HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, |
| hci_cc_le_set_addr_resolution_enable), |
| HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, |
| sizeof(struct hci_rp_le_read_max_data_len)), |
| HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, |
| hci_cc_write_le_host_supported), |
| HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), |
| HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, |
| sizeof(struct hci_rp_read_rssi)), |
| HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, |
| sizeof(struct hci_rp_read_tx_power)), |
| HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), |
| HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, |
| hci_cc_le_set_ext_scan_param), |
| HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, |
| hci_cc_le_set_ext_scan_enable), |
| HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), |
| HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, |
| hci_cc_le_read_num_adv_sets, |
| sizeof(struct hci_rp_le_read_num_supported_adv_sets)), |
| HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, |
| sizeof(struct hci_rp_le_set_ext_adv_params)), |
| HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, |
| hci_cc_le_set_ext_adv_enable), |
| HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, |
| hci_cc_le_set_adv_set_random_addr), |
| HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), |
| HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), |
| HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), |
| HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, |
| hci_cc_le_set_per_adv_enable), |
| HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, |
| sizeof(struct hci_rp_le_read_transmit_power)), |
| HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), |
| HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, |
| sizeof(struct hci_rp_le_read_buffer_size_v2)), |
| HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, |
| sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), |
| HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, |
| sizeof(struct hci_rp_le_setup_iso_path)), |
| }; |
| |
| static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, |
| struct sk_buff *skb) |
| { |
| void *data; |
| |
| if (skb->len < cc->min_len) { |
| bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", |
| cc->op, skb->len, cc->min_len); |
| return HCI_ERROR_UNSPECIFIED; |
| } |
| |
| /* Just warn if the length is over max_len size it still be possible to |
| * partially parse the cc so leave to callback to decide if that is |
| * acceptable. |
| */ |
| if (skb->len > cc->max_len) |
| bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", |
| cc->op, skb->len, cc->max_len); |
| |
| data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); |
| if (!data) |
| return HCI_ERROR_UNSPECIFIED; |
| |
| return cc->func(hdev, data, skb); |
| } |
| |
| static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb, u16 *opcode, u8 *status, |
| hci_req_complete_t *req_complete, |
| hci_req_complete_skb_t *req_complete_skb) |
| { |
| struct hci_ev_cmd_complete *ev = data; |
| int i; |
| |
| *opcode = __le16_to_cpu(ev->opcode); |
| |
| bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); |
| |
| for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { |
| if (hci_cc_table[i].op == *opcode) { |
| *status = hci_cc_func(hdev, &hci_cc_table[i], skb); |
| break; |
| } |
| } |
| |
| if (i == ARRAY_SIZE(hci_cc_table)) { |
| /* Unknown opcode, assume byte 0 contains the status, so |
| * that e.g. __hci_cmd_sync() properly returns errors |
| * for vendor specific commands send by HCI drivers. |
| * If a vendor doesn't actually follow this convention we may |
| * need to introduce a vendor CC table in order to properly set |
| * the status. |
| */ |
| *status = skb->data[0]; |
| } |
| |
| handle_cmd_cnt_and_timer(hdev, ev->ncmd); |
| |
| hci_req_cmd_complete(hdev, *opcode, *status, req_complete, |
| req_complete_skb); |
| |
| if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { |
| bt_dev_err(hdev, |
| "unexpected event for opcode 0x%4.4x", *opcode); |
| return; |
| } |
| |
| if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) |
| queue_work(hdev->workqueue, &hdev->cmd_work); |
| } |
| |
| static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) |
| { |
| struct hci_cp_le_create_cis *cp; |
| bool pending = false; |
| int i; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| if (!status) |
| return; |
| |
| cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); |
| if (!cp) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| /* Remove connection if command failed */ |
| for (i = 0; i < cp->num_cis; i++) { |
| struct hci_conn *conn; |
| u16 handle; |
| |
| handle = __le16_to_cpu(cp->cis[i].cis_handle); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, handle); |
| if (conn) { |
| if (test_and_clear_bit(HCI_CONN_CREATE_CIS, |
| &conn->flags)) |
| pending = true; |
| conn->state = BT_CLOSED; |
| hci_connect_cfm(conn, status); |
| hci_conn_del(conn); |
| } |
| } |
| cp->num_cis = 0; |
| |
| if (pending) |
| hci_le_create_cis_pending(hdev); |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| #define HCI_CS(_op, _func) \ |
| { \ |
| .op = _op, \ |
| .func = _func, \ |
| } |
| |
| static const struct hci_cs { |
| u16 op; |
| void (*func)(struct hci_dev *hdev, __u8 status); |
| } hci_cs_table[] = { |
| HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), |
| HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), |
| HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), |
| HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), |
| HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), |
| HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), |
| HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), |
| HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), |
| HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, |
| hci_cs_read_remote_ext_features), |
| HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), |
| HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, |
| hci_cs_enhanced_setup_sync_conn), |
| HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), |
| HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), |
| HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), |
| HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), |
| HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), |
| HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), |
| HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), |
| HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), |
| HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), |
| }; |
| |
| static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb, u16 *opcode, u8 *status, |
| hci_req_complete_t *req_complete, |
| hci_req_complete_skb_t *req_complete_skb) |
| { |
| struct hci_ev_cmd_status *ev = data; |
| int i; |
| |
| *opcode = __le16_to_cpu(ev->opcode); |
| *status = ev->status; |
| |
| bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); |
| |
| for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { |
| if (hci_cs_table[i].op == *opcode) { |
| hci_cs_table[i].func(hdev, ev->status); |
| break; |
| } |
| } |
| |
| handle_cmd_cnt_and_timer(hdev, ev->ncmd); |
| |
| /* Indicate request completion if the command failed. Also, if |
| * we're not waiting for a special event and we get a success |
| * command status we should try to flag the request as completed |
| * (since for this kind of commands there will not be a command |
| * complete event). |
| */ |
| if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { |
| hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, |
| req_complete_skb); |
| if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { |
| bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", |
| *opcode); |
| return; |
| } |
| } |
| |
| if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) |
| queue_work(hdev->workqueue, &hdev->cmd_work); |
| } |
| |
| static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_hardware_error *ev = data; |
| |
| bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); |
| |
| hdev->hw_error_code = ev->code; |
| |
| queue_work(hdev->req_workqueue, &hdev->error_reset); |
| } |
| |
| static void hci_role_change_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_role_change *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| if (conn) { |
| if (!ev->status) |
| conn->role = ev->role; |
| |
| clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); |
| |
| hci_role_switch_cfm(conn, ev->status, ev->role); |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_num_comp_pkts *ev = data; |
| int i; |
| |
| if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, |
| flex_array_size(ev, handles, ev->num))) |
| return; |
| |
| bt_dev_dbg(hdev, "num %d", ev->num); |
| |
| for (i = 0; i < ev->num; i++) { |
| struct hci_comp_pkts_info *info = &ev->handles[i]; |
| struct hci_conn *conn; |
| __u16 handle, count; |
| |
| handle = __le16_to_cpu(info->handle); |
| count = __le16_to_cpu(info->count); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, handle); |
| if (!conn) |
| continue; |
| |
| conn->sent -= count; |
| |
| switch (conn->type) { |
| case ACL_LINK: |
| hdev->acl_cnt += count; |
| if (hdev->acl_cnt > hdev->acl_pkts) |
| hdev->acl_cnt = hdev->acl_pkts; |
| break; |
| |
| case LE_LINK: |
| if (hdev->le_pkts) { |
| hdev->le_cnt += count; |
| if (hdev->le_cnt > hdev->le_pkts) |
| hdev->le_cnt = hdev->le_pkts; |
| } else { |
| hdev->acl_cnt += count; |
| if (hdev->acl_cnt > hdev->acl_pkts) |
| hdev->acl_cnt = hdev->acl_pkts; |
| } |
| break; |
| |
| case SCO_LINK: |
| hdev->sco_cnt += count; |
| if (hdev->sco_cnt > hdev->sco_pkts) |
| hdev->sco_cnt = hdev->sco_pkts; |
| break; |
| |
| case ISO_LINK: |
| if (hdev->iso_pkts) { |
| hdev->iso_cnt += count; |
| if (hdev->iso_cnt > hdev->iso_pkts) |
| hdev->iso_cnt = hdev->iso_pkts; |
| } else if (hdev->le_pkts) { |
| hdev->le_cnt += count; |
| if (hdev->le_cnt > hdev->le_pkts) |
| hdev->le_cnt = hdev->le_pkts; |
| } else { |
| hdev->acl_cnt += count; |
| if (hdev->acl_cnt > hdev->acl_pkts) |
| hdev->acl_cnt = hdev->acl_pkts; |
| } |
| break; |
| |
| default: |
| bt_dev_err(hdev, "unknown type %d conn %p", |
| conn->type, conn); |
| break; |
| } |
| } |
| |
| queue_work(hdev->workqueue, &hdev->tx_work); |
| } |
| |
| static void hci_mode_change_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_mode_change *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (conn) { |
| conn->mode = ev->mode; |
| |
| if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, |
| &conn->flags)) { |
| if (conn->mode == HCI_CM_ACTIVE) |
| set_bit(HCI_CONN_POWER_SAVE, &conn->flags); |
| else |
| clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); |
| } |
| |
| if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) |
| hci_sco_setup(conn, ev->status); |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_pin_code_req *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| if (!conn) |
| goto unlock; |
| |
| if (conn->state == BT_CONNECTED) { |
| hci_conn_hold(conn); |
| conn->disc_timeout = HCI_PAIRING_TIMEOUT; |
| hci_conn_drop(conn); |
| } |
| |
| if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && |
| !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { |
| hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, |
| sizeof(ev->bdaddr), &ev->bdaddr); |
| } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { |
| u8 secure; |
| |
| if (conn->pending_sec_level == BT_SECURITY_HIGH) |
| secure = 1; |
| else |
| secure = 0; |
| |
| mgmt_pin_code_request(hdev, &ev->bdaddr, secure); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) |
| { |
| if (key_type == HCI_LK_CHANGED_COMBINATION) |
| return; |
| |
| conn->pin_length = pin_len; |
| conn->key_type = key_type; |
| |
| switch (key_type) { |
| case HCI_LK_LOCAL_UNIT: |
| case HCI_LK_REMOTE_UNIT: |
| case HCI_LK_DEBUG_COMBINATION: |
| return; |
| case HCI_LK_COMBINATION: |
| if (pin_len == 16) |
| conn->pending_sec_level = BT_SECURITY_HIGH; |
| else |
| conn->pending_sec_level = BT_SECURITY_MEDIUM; |
| break; |
| case HCI_LK_UNAUTH_COMBINATION_P192: |
| case HCI_LK_UNAUTH_COMBINATION_P256: |
| conn->pending_sec_level = BT_SECURITY_MEDIUM; |
| break; |
| case HCI_LK_AUTH_COMBINATION_P192: |
| conn->pending_sec_level = BT_SECURITY_HIGH; |
| break; |
| case HCI_LK_AUTH_COMBINATION_P256: |
| conn->pending_sec_level = BT_SECURITY_FIPS; |
| break; |
| } |
| } |
| |
| static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_link_key_req *ev = data; |
| struct hci_cp_link_key_reply cp; |
| struct hci_conn *conn; |
| struct link_key *key; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| key = hci_find_link_key(hdev, &ev->bdaddr); |
| if (!key) { |
| bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); |
| goto not_found; |
| } |
| |
| bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| if (conn) { |
| clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); |
| |
| if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || |
| key->type == HCI_LK_UNAUTH_COMBINATION_P256) && |
| conn->auth_type != 0xff && (conn->auth_type & 0x01)) { |
| bt_dev_dbg(hdev, "ignoring unauthenticated key"); |
| goto not_found; |
| } |
| |
| if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && |
| (conn->pending_sec_level == BT_SECURITY_HIGH || |
| conn->pending_sec_level == BT_SECURITY_FIPS)) { |
| bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); |
| goto not_found; |
| } |
| |
| conn_set_key(conn, key->type, key->pin_len); |
| } |
| |
| bacpy(&cp.bdaddr, &ev->bdaddr); |
| memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); |
| |
| hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); |
| |
| hci_dev_unlock(hdev); |
| |
| return; |
| |
| not_found: |
| hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_link_key_notify *ev = data; |
| struct hci_conn *conn; |
| struct link_key *key; |
| bool persistent; |
| u8 pin_len = 0; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| if (!conn) |
| goto unlock; |
| |
| /* Ignore NULL link key against CVE-2020-26555 */ |
| if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { |
| bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", |
| &ev->bdaddr); |
| hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); |
| hci_conn_drop(conn); |
| goto unlock; |
| } |
| |
| hci_conn_hold(conn); |
| conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
| hci_conn_drop(conn); |
| |
| set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); |
| conn_set_key(conn, ev->key_type, conn->pin_length); |
| |
| if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
| goto unlock; |
| |
| key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, |
| ev->key_type, pin_len, &persistent); |
| if (!key) |
| goto unlock; |
| |
| /* Update connection information since adding the key will have |
| * fixed up the type in the case of changed combination keys. |
| */ |
| if (ev->key_type == HCI_LK_CHANGED_COMBINATION) |
| conn_set_key(conn, key->type, key->pin_len); |
| |
| mgmt_new_link_key(hdev, key, persistent); |
| |
| /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag |
| * is set. If it's not set simply remove the key from the kernel |
| * list (we've still notified user space about it but with |
| * store_hint being 0). |
| */ |
| if (key->type == HCI_LK_DEBUG_COMBINATION && |
| !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { |
| list_del_rcu(&key->list); |
| kfree_rcu(key, rcu); |
| goto unlock; |
| } |
| |
| if (persistent) |
| clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); |
| else |
| set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_clock_offset *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (conn && !ev->status) { |
| struct inquiry_entry *ie; |
| |
| ie = hci_inquiry_cache_lookup(hdev, &conn->dst); |
| if (ie) { |
| ie->data.clock_offset = ev->clock_offset; |
| ie->timestamp = jiffies; |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_pkt_type_change *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (conn && !ev->status) |
| conn->pkt_type = __le16_to_cpu(ev->pkt_type); |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_pscan_rep_mode *ev = data; |
| struct inquiry_entry *ie; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| hci_dev_lock(hdev); |
| |
| ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); |
| if (ie) { |
| ie->data.pscan_rep_mode = ev->pscan_rep_mode; |
| ie->timestamp = jiffies; |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_inquiry_result_rssi *ev = edata; |
| struct inquiry_data data; |
| int i; |
| |
| bt_dev_dbg(hdev, "num_rsp %d", ev->num); |
| |
| if (!ev->num) |
| return; |
| |
| if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| if (skb->len == array_size(ev->num, |
| sizeof(struct inquiry_info_rssi_pscan))) { |
| struct inquiry_info_rssi_pscan *info; |
| |
| for (i = 0; i < ev->num; i++) { |
| u32 flags; |
| |
| info = hci_ev_skb_pull(hdev, skb, |
| HCI_EV_INQUIRY_RESULT_WITH_RSSI, |
| sizeof(*info)); |
| if (!info) { |
| bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", |
| HCI_EV_INQUIRY_RESULT_WITH_RSSI); |
| goto unlock; |
| } |
| |
| bacpy(&data.bdaddr, &info->bdaddr); |
| data.pscan_rep_mode = info->pscan_rep_mode; |
| data.pscan_period_mode = info->pscan_period_mode; |
| data.pscan_mode = info->pscan_mode; |
| memcpy(data.dev_class, info->dev_class, 3); |
| data.clock_offset = info->clock_offset; |
| data.rssi = info->rssi; |
| data.ssp_mode = 0x00; |
| |
| flags = hci_inquiry_cache_update(hdev, &data, false); |
| |
| mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, |
| info->dev_class, info->rssi, |
| flags, NULL, 0, NULL, 0, 0); |
| } |
| } else if (skb->len == array_size(ev->num, |
| sizeof(struct inquiry_info_rssi))) { |
| struct inquiry_info_rssi *info; |
| |
| for (i = 0; i < ev->num; i++) { |
| u32 flags; |
| |
| info = hci_ev_skb_pull(hdev, skb, |
| HCI_EV_INQUIRY_RESULT_WITH_RSSI, |
| sizeof(*info)); |
| if (!info) { |
| bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", |
| HCI_EV_INQUIRY_RESULT_WITH_RSSI); |
| goto unlock; |
| } |
| |
| bacpy(&data.bdaddr, &info->bdaddr); |
| data.pscan_rep_mode = info->pscan_rep_mode; |
| data.pscan_period_mode = info->pscan_period_mode; |
| data.pscan_mode = 0x00; |
| memcpy(data.dev_class, info->dev_class, 3); |
| data.clock_offset = info->clock_offset; |
| data.rssi = info->rssi; |
| data.ssp_mode = 0x00; |
| |
| flags = hci_inquiry_cache_update(hdev, &data, false); |
| |
| mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, |
| info->dev_class, info->rssi, |
| flags, NULL, 0, NULL, 0, 0); |
| } |
| } else { |
| bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", |
| HCI_EV_INQUIRY_RESULT_WITH_RSSI); |
| } |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_remote_ext_features *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (!conn) |
| goto unlock; |
| |
| if (ev->page < HCI_MAX_PAGES) |
| memcpy(conn->features[ev->page], ev->features, 8); |
| |
| if (!ev->status && ev->page == 0x01) { |
| struct inquiry_entry *ie; |
| |
| ie = hci_inquiry_cache_lookup(hdev, &conn->dst); |
| if (ie) |
| ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); |
| |
| if (ev->features[0] & LMP_HOST_SSP) { |
| set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); |
| } else { |
| /* It is mandatory by the Bluetooth specification that |
| * Extended Inquiry Results are only used when Secure |
| * Simple Pairing is enabled, but some devices violate |
| * this. |
| * |
| * To make these devices work, the internal SSP |
| * enabled flag needs to be cleared if the remote host |
| * features do not indicate SSP support */ |
| clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); |
| } |
| |
| if (ev->features[0] & LMP_HOST_SC) |
| set_bit(HCI_CONN_SC_ENABLED, &conn->flags); |
| } |
| |
| if (conn->state != BT_CONFIG) |
| goto unlock; |
| |
| if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { |
| struct hci_cp_remote_name_req cp; |
| memset(&cp, 0, sizeof(cp)); |
| bacpy(&cp.bdaddr, &conn->dst); |
| cp.pscan_rep_mode = 0x02; |
| hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); |
| } else { |
| mgmt_device_connected(hdev, conn, NULL, 0); |
| } |
| |
| if (!hci_outgoing_auth_needed(hdev, conn)) { |
| conn->state = BT_CONNECTED; |
| hci_connect_cfm(conn, ev->status); |
| hci_conn_drop(conn); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_sync_conn_complete *ev = data; |
| struct hci_conn *conn; |
| u8 status = ev->status; |
| |
| switch (ev->link_type) { |
| case SCO_LINK: |
| case ESCO_LINK: |
| break; |
| default: |
| /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type |
| * for HCI_Synchronous_Connection_Complete is limited to |
| * either SCO or eSCO |
| */ |
| bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); |
| return; |
| } |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); |
| if (!conn) { |
| if (ev->link_type == ESCO_LINK) |
| goto unlock; |
| |
| /* When the link type in the event indicates SCO connection |
| * and lookup of the connection object fails, then check |
| * if an eSCO connection object exists. |
| * |
| * The core limits the synchronous connections to either |
| * SCO or eSCO. The eSCO connection is preferred and tried |
| * to be setup first and until successfully established, |
| * the link type will be hinted as eSCO. |
| */ |
| conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); |
| if (!conn) |
| goto unlock; |
| } |
| |
| /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. |
| * Processing it more than once per connection can corrupt kernel memory. |
| * |
| * As the connection handle is set here for the first time, it indicates |
| * whether the connection is already set up. |
| */ |
| if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { |
| bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); |
| goto unlock; |
| } |
| |
| switch (status) { |
| case 0x00: |
| status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); |
| if (status) { |
| conn->state = BT_CLOSED; |
| break; |
| } |
| |
| conn->state = BT_CONNECTED; |
| conn->type = ev->link_type; |
| |
| hci_debugfs_create_conn(conn); |
| hci_conn_add_sysfs(conn); |
| break; |
| |
| case 0x10: /* Connection Accept Timeout */ |
| case 0x0d: /* Connection Rejected due to Limited Resources */ |
| case 0x11: /* Unsupported Feature or Parameter Value */ |
| case 0x1c: /* SCO interval rejected */ |
| case 0x1a: /* Unsupported Remote Feature */ |
| case 0x1e: /* Invalid LMP Parameters */ |
| case 0x1f: /* Unspecified error */ |
| case 0x20: /* Unsupported LMP Parameter value */ |
| if (conn->out) { |
| conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | |
| (hdev->esco_type & EDR_ESCO_MASK); |
| if (hci_setup_sync(conn, conn->parent->handle)) |
| goto unlock; |
| } |
| fallthrough; |
| |
| default: |
| conn->state = BT_CLOSED; |
| break; |
| } |
| |
| bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); |
| /* 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 && 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, status); |
| if (status) |
| hci_conn_del(conn); |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static inline size_t eir_get_length(u8 *eir, size_t eir_len) |
| { |
| size_t parsed = 0; |
| |
| while (parsed < eir_len) { |
| u8 field_len = eir[0]; |
| |
| if (field_len == 0) |
| return parsed; |
| |
| parsed += field_len + 1; |
| eir += field_len + 1; |
| } |
| |
| return eir_len; |
| } |
| |
| static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_ext_inquiry_result *ev = edata; |
| struct inquiry_data data; |
| size_t eir_len; |
| int i; |
| |
| if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, |
| flex_array_size(ev, info, ev->num))) |
| return; |
| |
| bt_dev_dbg(hdev, "num %d", ev->num); |
| |
| if (!ev->num) |
| return; |
| |
| if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| for (i = 0; i < ev->num; i++) { |
| struct extended_inquiry_info *info = &ev->info[i]; |
| u32 flags; |
| bool name_known; |
| |
| bacpy(&data.bdaddr, &info->bdaddr); |
| data.pscan_rep_mode = info->pscan_rep_mode; |
| data.pscan_period_mode = info->pscan_period_mode; |
| data.pscan_mode = 0x00; |
| memcpy(data.dev_class, info->dev_class, 3); |
| data.clock_offset = info->clock_offset; |
| data.rssi = info->rssi; |
| data.ssp_mode = 0x01; |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| name_known = eir_get_data(info->data, |
| sizeof(info->data), |
| EIR_NAME_COMPLETE, NULL); |
| else |
| name_known = true; |
| |
| flags = hci_inquiry_cache_update(hdev, &data, name_known); |
| |
| eir_len = eir_get_length(info->data, sizeof(info->data)); |
| |
| mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, |
| info->dev_class, info->rssi, |
| flags, info->data, eir_len, NULL, 0, 0); |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_key_refresh_complete *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, |
| __le16_to_cpu(ev->handle)); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (!conn) |
| goto unlock; |
| |
| /* For BR/EDR the necessary steps are taken through the |
| * auth_complete event. |
| */ |
| if (conn->type != LE_LINK) |
| goto unlock; |
| |
| if (!ev->status) |
| conn->sec_level = conn->pending_sec_level; |
| |
| clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); |
| |
| if (ev->status && conn->state == BT_CONNECTED) { |
| hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); |
| hci_conn_drop(conn); |
| goto unlock; |
| } |
| |
| if (conn->state == BT_CONFIG) { |
| if (!ev->status) |
| conn->state = BT_CONNECTED; |
| |
| hci_connect_cfm(conn, ev->status); |
| hci_conn_drop(conn); |
| } else { |
| hci_auth_cfm(conn, ev->status); |
| |
| hci_conn_hold(conn); |
| conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
| hci_conn_drop(conn); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static u8 hci_get_auth_req(struct hci_conn *conn) |
| { |
| /* If remote requests no-bonding follow that lead */ |
| if (conn->remote_auth == HCI_AT_NO_BONDING || |
| conn->remote_auth == HCI_AT_NO_BONDING_MITM) |
| return conn->remote_auth | (conn->auth_type & 0x01); |
| |
| /* If both remote and local have enough IO capabilities, require |
| * MITM protection |
| */ |
| if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && |
| conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) |
| return conn->remote_auth | 0x01; |
| |
| /* No MITM protection possible so ignore remote requirement */ |
| return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); |
| } |
| |
| static u8 bredr_oob_data_present(struct hci_conn *conn) |
| { |
| struct hci_dev *hdev = conn->hdev; |
| struct oob_data *data; |
| |
| data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); |
| if (!data) |
| return 0x00; |
| |
| if (bredr_sc_enabled(hdev)) { |
| /* When Secure Connections is enabled, then just |
| * return the present value stored with the OOB |
| * data. The stored value contains the right present |
| * information. However it can only be trusted when |
| * not in Secure Connection Only mode. |
| */ |
| if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) |
| return data->present; |
| |
| /* When Secure Connections Only mode is enabled, then |
| * the P-256 values are required. If they are not |
| * available, then do not declare that OOB data is |
| * present. |
| */ |
| if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || |
| !crypto_memneq(data->hash256, ZERO_KEY, 16)) |
| return 0x00; |
| |
| return 0x02; |
| } |
| |
| /* When Secure Connections is not enabled or actually |
| * not supported by the hardware, then check that if |
| * P-192 data values are present. |
| */ |
| if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || |
| !crypto_memneq(data->hash192, ZERO_KEY, 16)) |
| return 0x00; |
| |
| return 0x01; |
| } |
| |
| static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_io_capa_request *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) |
| goto unlock; |
| |
| /* Assume remote supports SSP since it has triggered this event */ |
| set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); |
| |
| hci_conn_hold(conn); |
| |
| if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
| goto unlock; |
| |
| /* Allow pairing if we're pairable, the initiators of the |
| * pairing or if the remote is not requesting bonding. |
| */ |
| if (hci_dev_test_flag(hdev, HCI_BONDABLE) || |
| test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || |
| (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { |
| struct hci_cp_io_capability_reply cp; |
| |
| bacpy(&cp.bdaddr, &ev->bdaddr); |
| /* Change the IO capability from KeyboardDisplay |
| * to DisplayYesNo as it is not supported by BT spec. */ |
| cp.capability = (conn->io_capability == 0x04) ? |
| HCI_IO_DISPLAY_YESNO : conn->io_capability; |
| |
| /* If we are initiators, there is no remote information yet */ |
| if (conn->remote_auth == 0xff) { |
| /* Request MITM protection if our IO caps allow it |
| * except for the no-bonding case. |
| */ |
| if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && |
| conn->auth_type != HCI_AT_NO_BONDING) |
| conn->auth_type |= 0x01; |
| } else { |
| conn->auth_type = hci_get_auth_req(conn); |
| } |
| |
| /* If we're not bondable, force one of the non-bondable |
| * authentication requirement values. |
| */ |
| if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) |
| conn->auth_type &= HCI_AT_NO_BONDING_MITM; |
| |
| cp.authentication = conn->auth_type; |
| cp.oob_data = bredr_oob_data_present(conn); |
| |
| hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, |
| sizeof(cp), &cp); |
| } else { |
| struct hci_cp_io_capability_neg_reply cp; |
| |
| bacpy(&cp.bdaddr, &ev->bdaddr); |
| cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; |
| |
| hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, |
| sizeof(cp), &cp); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_io_capa_reply *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| if (!conn) |
| goto unlock; |
| |
| conn->remote_cap = ev->capability; |
| conn->remote_auth = ev->authentication; |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_user_confirm_req *ev = data; |
| int loc_mitm, rem_mitm, confirm_hint = 0; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| hci_dev_lock(hdev); |
| |
| if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
| goto unlock; |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| if (!conn) |
| goto unlock; |
| |
| loc_mitm = (conn->auth_type & 0x01); |
| rem_mitm = (conn->remote_auth & 0x01); |
| |
| /* If we require MITM but the remote device can't provide that |
| * (it has NoInputNoOutput) then reject the confirmation |
| * request. We check the security level here since it doesn't |
| * necessarily match conn->auth_type. |
| */ |
| if (conn->pending_sec_level > BT_SECURITY_MEDIUM && |
| conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { |
| bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); |
| hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, |
| sizeof(ev->bdaddr), &ev->bdaddr); |
| goto unlock; |
| } |
| |
| /* If no side requires MITM protection; auto-accept */ |
| if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && |
| (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { |
| |
| /* If we're not the initiators request authorization to |
| * proceed from user space (mgmt_user_confirm with |
| * confirm_hint set to 1). The exception is if neither |
| * side had MITM or if the local IO capability is |
| * NoInputNoOutput, in which case we do auto-accept |
| */ |
| if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && |
| conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && |
| (loc_mitm || rem_mitm)) { |
| bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); |
| confirm_hint = 1; |
| goto confirm; |
| } |
| |
| /* If there already exists link key in local host, leave the |
| * decision to user space since the remote device could be |
| * legitimate or malicious. |
| */ |
| if (hci_find_link_key(hdev, &ev->bdaddr)) { |
| bt_dev_dbg(hdev, "Local host already has link key"); |
| confirm_hint = 1; |
| goto confirm; |
| } |
| |
| BT_DBG("Auto-accept of user confirmation with %ums delay", |
| hdev->auto_accept_delay); |
| |
| if (hdev->auto_accept_delay > 0) { |
| int delay = msecs_to_jiffies(hdev->auto_accept_delay); |
| queue_delayed_work(conn->hdev->workqueue, |
| &conn->auto_accept_work, delay); |
| goto unlock; |
| } |
| |
| hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, |
| sizeof(ev->bdaddr), &ev->bdaddr); |
| goto unlock; |
| } |
| |
| confirm: |
| mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, |
| le32_to_cpu(ev->passkey), confirm_hint); |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_user_passkey_req *ev = data; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); |
| } |
| |
| static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_user_passkey_notify *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| if (!conn) |
| return; |
| |
| conn->passkey_notify = __le32_to_cpu(ev->passkey); |
| conn->passkey_entered = 0; |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, |
| conn->dst_type, conn->passkey_notify, |
| conn->passkey_entered); |
| } |
| |
| static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_keypress_notify *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| if (!conn) |
| return; |
| |
| switch (ev->type) { |
| case HCI_KEYPRESS_STARTED: |
| conn->passkey_entered = 0; |
| return; |
| |
| case HCI_KEYPRESS_ENTERED: |
| conn->passkey_entered++; |
| break; |
| |
| case HCI_KEYPRESS_ERASED: |
| conn->passkey_entered--; |
| break; |
| |
| case HCI_KEYPRESS_CLEARED: |
| conn->passkey_entered = 0; |
| break; |
| |
| case HCI_KEYPRESS_COMPLETED: |
| return; |
| } |
| |
| if (hci_dev_test_flag(hdev, HCI_MGMT)) |
| mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, |
| conn->dst_type, conn->passkey_notify, |
| conn->passkey_entered); |
| } |
| |
| static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_simple_pair_complete *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| if (!conn || !hci_conn_ssp_enabled(conn)) |
| goto unlock; |
| |
| /* Reset the authentication requirement to unknown */ |
| conn->remote_auth = 0xff; |
| |
| /* To avoid duplicate auth_failed events to user space we check |
| * the HCI_CONN_AUTH_PEND flag which will be set if we |
| * initiated the authentication. A traditional auth_complete |
| * event gets always produced as initiator and is also mapped to |
| * the mgmt_auth_failed event */ |
| if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) |
| mgmt_auth_failed(conn, ev->status); |
| |
| hci_conn_drop(conn); |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_remote_host_features *ev = data; |
| struct inquiry_entry *ie; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); |
| if (conn) |
| memcpy(conn->features[1], ev->features, 8); |
| |
| ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); |
| if (ie) |
| ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_remote_oob_data_request *ev = edata; |
| struct oob_data *data; |
| |
| bt_dev_dbg(hdev, ""); |
| |
| hci_dev_lock(hdev); |
| |
| if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
| goto unlock; |
| |
| data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); |
| if (!data) { |
| struct hci_cp_remote_oob_data_neg_reply cp; |
| |
| bacpy(&cp.bdaddr, &ev->bdaddr); |
| hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, |
| sizeof(cp), &cp); |
| goto unlock; |
| } |
| |
| if (bredr_sc_enabled(hdev)) { |
| struct hci_cp_remote_oob_ext_data_reply cp; |
| |
| bacpy(&cp.bdaddr, &ev->bdaddr); |
| if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { |
| memset(cp.hash192, 0, sizeof(cp.hash192)); |
| memset(cp.rand192, 0, sizeof(cp.rand192)); |
| } else { |
| memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); |
| memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); |
| } |
| memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); |
| memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); |
| |
| hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, |
| sizeof(cp), &cp); |
| } else { |
| struct hci_cp_remote_oob_data_reply cp; |
| |
| bacpy(&cp.bdaddr, &ev->bdaddr); |
| memcpy(cp.hash, data->hash192, sizeof(cp.hash)); |
| memcpy(cp.rand, data->rand192, sizeof(cp.rand)); |
| |
| hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, |
| sizeof(cp), &cp); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, |
| u8 bdaddr_type, bdaddr_t *local_rpa) |
| { |
| if (conn->out) { |
| conn->dst_type = bdaddr_type; |
| conn->resp_addr_type = bdaddr_type; |
| bacpy(&conn->resp_addr, bdaddr); |
| |
| /* Check if the controller has set a Local RPA then it must be |
| * used instead or hdev->rpa. |
| */ |
| if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { |
| conn->init_addr_type = ADDR_LE_DEV_RANDOM; |
| bacpy(&conn->init_addr, local_rpa); |
| } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { |
| conn->init_addr_type = ADDR_LE_DEV_RANDOM; |
| bacpy(&conn->init_addr, &conn->hdev->rpa); |
| } else { |
| hci_copy_identity_address(conn->hdev, &conn->init_addr, |
| &conn->init_addr_type); |
| } |
| } else { |
| conn->resp_addr_type = conn->hdev->adv_addr_type; |
| /* Check if the controller has set a Local RPA then it must be |
| * used instead or hdev->rpa. |
| */ |
| if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { |
| conn->resp_addr_type = ADDR_LE_DEV_RANDOM; |
| bacpy(&conn->resp_addr, local_rpa); |
| } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { |
| /* In case of ext adv, resp_addr will be updated in |
| * Adv Terminated event. |
| */ |
| if (!ext_adv_capable(conn->hdev)) |
| bacpy(&conn->resp_addr, |
| &conn->hdev->random_addr); |
| } else { |
| bacpy(&conn->resp_addr, &conn->hdev->bdaddr); |
| } |
| |
| conn->init_addr_type = bdaddr_type; |
| bacpy(&conn->init_addr, bdaddr); |
| |
| /* For incoming connections, set the default minimum |
| * and maximum connection interval. They will be used |
| * to check if the parameters are in range and if not |
| * trigger the connection update procedure. |
| */ |
| conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; |
| conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; |
| } |
| } |
| |
| static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, |
| bdaddr_t *bdaddr, u8 bdaddr_type, |
| bdaddr_t *local_rpa, u8 role, u16 handle, |
| u16 interval, u16 latency, |
| u16 supervision_timeout) |
| { |
| struct hci_conn_params *params; |
| struct hci_conn *conn; |
| struct smp_irk *irk; |
| u8 addr_type; |
| |
| hci_dev_lock(hdev); |
| |
| /* All controllers implicitly stop advertising in the event of a |
| * connection, so ensure that the state bit is cleared. |
| */ |
| hci_dev_clear_flag(hdev, HCI_LE_ADV); |
| |
| conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); |
| if (!conn) { |
| /* In case of error status and there is no connection pending |
| * just unlock as there is nothing to cleanup. |
| */ |
| if (status) |
| goto unlock; |
| |
| conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); |
| if (IS_ERR(conn)) { |
| bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); |
| goto unlock; |
| } |
| |
| conn->dst_type = bdaddr_type; |
| |
| /* If we didn't have a hci_conn object previously |
| * but we're in central role this must be something |
| * initiated using an accept list. Since accept list based |
| * connections are not "first class citizens" we don't |
| * have full tracking of them. Therefore, we go ahead |
| * with a "best effort" approach of determining the |
| * initiator address based on the HCI_PRIVACY flag. |
| */ |
| if (conn->out) { |
| conn->resp_addr_type = bdaddr_type; |
| bacpy(&conn->resp_addr, bdaddr); |
| if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { |
| conn->init_addr_type = ADDR_LE_DEV_RANDOM; |
| bacpy(&conn->init_addr, &hdev->rpa); |
| } else { |
| hci_copy_identity_address(hdev, |
| &conn->init_addr, |
| &conn->init_addr_type); |
| } |
| } |
| } else { |
| cancel_delayed_work(&conn->le_conn_timeout); |
| } |
| |
| /* The HCI_LE_Connection_Complete event is only sent once per connection. |
| * Processing it more than once per connection can corrupt kernel memory. |
| * |
| * As the connection handle is set here for the first time, it indicates |
| * whether the connection is already set up. |
| */ |
| if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { |
| bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); |
| goto unlock; |
| } |
| |
| le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); |
| |
| /* Lookup the identity address from the stored connection |
| * address and address type. |
| * |
| * When establishing connections to an identity address, the |
| * connection procedure will store the resolvable random |
| * address first. Now if it can be converted back into the |
| * identity address, start using the identity address from |
| * now on. |
| */ |
| irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); |
| if (irk) { |
| bacpy(&conn->dst, &irk->bdaddr); |
| conn->dst_type = irk->addr_type; |
| } |
| |
| conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); |
| |
| /* All connection failure handling is taken care of by the |
| * hci_conn_failed function which is triggered by the HCI |
| * request completion callbacks used for connecting. |
| */ |
| if (status || hci_conn_set_handle(conn, handle)) |
| goto unlock; |
| |
| /* Drop the connection if it has been aborted */ |
| if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { |
| hci_conn_drop(conn); |
| goto unlock; |
| } |
| |
| if (conn->dst_type == ADDR_LE_DEV_PUBLIC) |
| addr_type = BDADDR_LE_PUBLIC; |
| else |
| addr_type = BDADDR_LE_RANDOM; |
| |
| /* Drop the connection if the device is blocked */ |
| if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { |
| hci_conn_drop(conn); |
| goto unlock; |
| } |
| |
| mgmt_device_connected(hdev, conn, NULL, 0); |
| |
| conn->sec_level = BT_SECURITY_LOW; |
| conn->state = BT_CONFIG; |
| |
| /* Store current advertising instance as connection advertising instance |
| * when sotfware rotation is in use so it can be re-enabled when |
| * disconnected. |
| */ |
| if (!ext_adv_capable(hdev)) |
| conn->adv_instance = hdev->cur_adv_instance; |
| |
| conn->le_conn_interval = interval; |
| conn->le_conn_latency = latency; |
| conn->le_supv_timeout = supervision_timeout; |
| |
| hci_debugfs_create_conn(conn); |
| hci_conn_add_sysfs(conn); |
| |
| /* The remote features procedure is defined for central |
| * role only. So only in case of an initiated connection |
| * request the remote features. |
| * |
| * If the local controller supports peripheral-initiated features |
| * exchange, then requesting the remote features in peripheral |
| * role is possible. Otherwise just transition into the |
| * connected state without requesting the remote features. |
| */ |
| if (conn->out || |
| (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { |
| struct hci_cp_le_read_remote_features cp; |
| |
| cp.handle = __cpu_to_le16(conn->handle); |
| |
| hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, |
| sizeof(cp), &cp); |
| |
| hci_conn_hold(conn); |
| } else { |
| conn->state = BT_CONNECTED; |
| hci_connect_cfm(conn, status); |
| } |
| |
| params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, |
| conn->dst_type); |
| if (params) { |
| hci_pend_le_list_del_init(params); |
| if (params->conn) { |
| hci_conn_drop(params->conn); |
| hci_conn_put(params->conn); |
| params->conn = NULL; |
| } |
| } |
| |
| unlock: |
| hci_update_passive_scan(hdev); |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_conn_complete *ev = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, |
| NULL, ev->role, le16_to_cpu(ev->handle), |
| le16_to_cpu(ev->interval), |
| le16_to_cpu(ev->latency), |
| le16_to_cpu(ev->supervision_timeout)); |
| } |
| |
| static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_enh_conn_complete *ev = data; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, |
| &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), |
| le16_to_cpu(ev->interval), |
| le16_to_cpu(ev->latency), |
| le16_to_cpu(ev->supervision_timeout)); |
| } |
| |
| static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_evt_le_ext_adv_set_term *ev = data; |
| struct hci_conn *conn; |
| struct adv_info *adv, *n; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| /* 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; |
| } |
| |
| hci_dev_lock(hdev); |
| |
| adv = hci_find_adv_instance(hdev, ev->handle); |
| |
| if (ev->status) { |
| if (!adv) |
| goto unlock; |
| |
| /* Remove advertising as it has been terminated */ |
| 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) |
| goto unlock; |
| } |
| |
| /* We are no longer advertising, clear HCI_LE_ADV */ |
| hci_dev_clear_flag(hdev, HCI_LE_ADV); |
| goto unlock; |
| } |
| |
| if (adv) |
| adv->enabled = false; |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); |
| if (conn) { |
| /* Store handle in the connection so the correct advertising |
| * instance can be re-enabled when disconnected. |
| */ |
| conn->adv_instance = ev->handle; |
| |
| if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || |
| bacmp(&conn->resp_addr, BDADDR_ANY)) |
| goto unlock; |
| |
| if (!ev->handle) { |
| bacpy(&conn->resp_addr, &hdev->random_addr); |
| goto unlock; |
| } |
| |
| if (adv) |
| bacpy(&conn->resp_addr, &adv->random_addr); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_conn_update_complete *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| if (ev->status) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (conn) { |
| conn->le_conn_interval = le16_to_cpu(ev->interval); |
| conn->le_conn_latency = le16_to_cpu(ev->latency); |
| conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| /* This function requires the caller holds hdev->lock */ |
| static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, |
| bdaddr_t *addr, |
| u8 addr_type, bool addr_resolved, |
| u8 adv_type, u8 phy, u8 sec_phy) |
| { |
| struct hci_conn *conn; |
| struct hci_conn_params *params; |
| |
| /* If the event is not connectable don't proceed further */ |
| if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) |
| return NULL; |
| |
| /* 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 |
| * while we have an existing one in peripheral role. |
| */ |
| if (hdev->conn_hash.le_num_peripheral > 0 && |
| (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || |
| !(hdev->le_states[3] & 0x10))) |
| return NULL; |
| |
| /* If we're not connectable only connect devices that we have in |
| * our pend_le_conns list. |
| */ |
| params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, |
| addr_type); |
| if (!params) |
| return NULL; |
| |
| if (!params->explicit_connect) { |
| switch (params->auto_connect) { |
| case HCI_AUTO_CONN_DIRECT: |
| /* Only devices advertising with ADV_DIRECT_IND are |
| * triggering a connection attempt. This is allowing |
| * incoming connections from peripheral devices. |
| */ |
| if (adv_type != LE_ADV_DIRECT_IND) |
| return NULL; |
| break; |
| case HCI_AUTO_CONN_ALWAYS: |
| /* Devices advertising with ADV_IND or ADV_DIRECT_IND |
| * are triggering a connection attempt. This means |
| * that incoming connections from peripheral device are |
| * accepted and also outgoing connections to peripheral |
| * devices are established when found. |
| */ |
| break; |
| default: |
| return NULL; |
| } |
| } |
| |
| conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, |
| BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, |
| HCI_ROLE_MASTER, phy, sec_phy); |
| if (!IS_ERR(conn)) { |
| /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned |
| * by higher layer that tried to connect, if no then |
| * store the pointer since we don't really have any |
| * other owner of the object besides the params that |
| * triggered it. This way we can abort the connection if |
| * the parameters get removed and keep the reference |
| * count consistent once the connection is established. |
| */ |
| |
| if (!params->explicit_connect) |
| params->conn = hci_conn_get(conn); |
| |
| return conn; |
| } |
| |
| switch (PTR_ERR(conn)) { |
| case -EBUSY: |
| /* If hci_connect() returns -EBUSY it means there is already |
| * an LE connection attempt going on. Since controllers don't |
| * support more than one connection attempt at the time, we |
| * don't consider this an error case. |
| */ |
| break; |
| default: |
| BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); |
| return NULL; |
| } |
| |
| return NULL; |
| } |
| |
| static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, |
| u8 bdaddr_type, bdaddr_t *direct_addr, |
| u8 direct_addr_type, u8 phy, u8 sec_phy, s8 rssi, |
| u8 *data, u8 len, bool ext_adv, bool ctl_time, |
| u64 instant) |
| { |
| struct discovery_state *d = &hdev->discovery; |
| struct smp_irk *irk; |
| struct hci_conn *conn; |
| bool match, bdaddr_resolved; |
| u32 flags; |
| u8 *ptr; |
| |
| switch (type) { |
| case LE_ADV_IND: |
| case LE_ADV_DIRECT_IND: |
| case LE_ADV_SCAN_IND: |
| case LE_ADV_NONCONN_IND: |
| case LE_ADV_SCAN_RSP: |
| break; |
| default: |
| bt_dev_err_ratelimited(hdev, "unknown advertising packet " |
| "type: 0x%02x", type); |
| return; |
| } |
| |
| if (len > max_adv_len(hdev)) { |
| bt_dev_err_ratelimited(hdev, |
| "adv larger than maximum supported"); |
| return; |
| } |
| |
| /* Find the end of the data in case the report contains padded zero |
| * bytes at the end causing an invalid length value. |
| * |
| * When data is NULL, len is 0 so there is no need for extra ptr |
| * check as 'ptr < data + 0' is already false in such case. |
| */ |
| for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { |
| if (ptr + 1 + *ptr > data + len) |
| break; |
| } |
| |
| /* Adjust for actual length. This handles the case when remote |
| * device is advertising with incorrect data length. |
| */ |
| len = ptr - data; |
| |
| /* If the direct address is present, then this report is from |
| * a LE Direct Advertising Report event. In that case it is |
| * important to see if the address is matching the local |
| * controller address. |
| */ |
| if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { |
| direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, |
| &bdaddr_resolved); |
| |
| /* Only resolvable random addresses are valid for these |
| * kind of reports and others can be ignored. |
| */ |
| if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) |
| return; |
| |
| /* If the controller is not using resolvable random |
| * addresses, then this report can be ignored. |
| */ |
| if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) |
| return; |
| |
| /* If the local IRK of the controller does not match |
| * with the resolvable random address provided, then |
| * this report can be ignored. |
| */ |
| if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) |
| return; |
| } |
| |
| /* Check if we need to convert to identity address */ |
| irk = hci_get_irk(hdev, bdaddr, bdaddr_type); |
| if (irk) { |
| bdaddr = &irk->bdaddr; |
| bdaddr_type = irk->addr_type; |
| } |
| |
| bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); |
| |
| /* Check if we have been requested to connect to this device. |
| * |
| * direct_addr is set only for directed advertising reports (it is NULL |
| * for advertising reports) and is already verified to be RPA above. |
| */ |
| conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, |
| type, phy, sec_phy); |
| if (!ext_adv && conn && type == LE_ADV_IND && |
| len <= max_adv_len(hdev)) { |
| /* Store report for later inclusion by |
| * mgmt_device_connected |
| */ |
| memcpy(conn->le_adv_data, data, len); |
| conn->le_adv_data_len = len; |
| } |
| |
| if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) |
| flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; |
| else |
| flags = 0; |
| |
| /* All scan results should be sent up for Mesh systems */ |
| if (hci_dev_test_flag(hdev, HCI_MESH)) { |
| mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, |
| rssi, flags, data, len, NULL, 0, instant); |
| return; |
| } |
| |
| /* Passive scanning shouldn't trigger any device found events, |
| * except for devices marked as CONN_REPORT for which we do send |
| * device found events, or advertisement monitoring requested. |
| */ |
| if (hdev->le_scan_type == LE_SCAN_PASSIVE) { |
| if (type == LE_ADV_DIRECT_IND) |
| return; |
| |
| if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, |
| bdaddr, bdaddr_type) && |
| idr_is_empty(&hdev->adv_monitors_idr)) |
| return; |
| |
| mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, |
| rssi, flags, data, len, NULL, 0, 0); |
| return; |
| } |
| |
| /* When receiving a scan response, then there is no way to |
| * know if the remote device is connectable or not. However |
| * since scan responses are merged with a previously seen |
| * advertising report, the flags field from that report |
| * will be used. |
| * |
| * In the unlikely case that a controller just sends a scan |
| * response event that doesn't match the pending report, then |
| * it is marked as a standalone SCAN_RSP. |
| */ |
| if (type == LE_ADV_SCAN_RSP) |
| flags = MGMT_DEV_FOUND_SCAN_RSP; |
| |
| /* If there's nothing pending either store the data from this |
| * event or send an immediate device found event if the data |
| * should not be stored for later. |
| */ |
| if (!ext_adv && !has_pending_adv_report(hdev)) { |
| /* If the report will trigger a SCAN_REQ store it for |
| * later merging. |
| */ |
| if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { |
| store_pending_adv_report(hdev, bdaddr, bdaddr_type, |
| rssi, flags, data, len); |
| return; |
| } |
| |
| mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, |
| rssi, flags, data, len, NULL, 0, 0); |
| return; |
| } |
| |
| /* Check if the pending report is for the same device as the new one */ |
| match = (!bacmp(bdaddr, &d->last_adv_addr) && |
| bdaddr_type == d->last_adv_addr_type); |
| |
| /* If the pending data doesn't match this report or this isn't a |
| * scan response (e.g. we got a duplicate ADV_IND) then force |
| * sending of the pending data. |
| */ |
| if (type != LE_ADV_SCAN_RSP || !match) { |
| /* Send out whatever is in the cache, but skip duplicates */ |
| if (!match) |
| mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, |
| d->last_adv_addr_type, NULL, |
| d->last_adv_rssi, d->last_adv_flags, |
| d->last_adv_data, |
| d->last_adv_data_len, NULL, 0, 0); |
| |
| /* If the new report will trigger a SCAN_REQ store it for |
| * later merging. |
| */ |
| if (!ext_adv && (type == LE_ADV_IND || |
| type == LE_ADV_SCAN_IND)) { |
| store_pending_adv_report(hdev, bdaddr, bdaddr_type, |
| rssi, flags, data, len); |
| return; |
| } |
| |
| /* The advertising reports cannot be merged, so clear |
| * the pending report and send out a device found event. |
| */ |
| clear_pending_adv_report(hdev); |
| mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, |
| rssi, flags, data, len, NULL, 0, 0); |
| return; |
| } |
| |
| /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and |
| * the new event is a SCAN_RSP. We can therefore proceed with |
| * sending a merged device found event. |
| */ |
| mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, |
| d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, |
| d->last_adv_data, d->last_adv_data_len, data, len, 0); |
| clear_pending_adv_report(hdev); |
| } |
| |
| static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_advertising_report *ev = data; |
| u64 instant = jiffies; |
| |
| if (!ev->num) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| while (ev->num--) { |
| struct hci_ev_le_advertising_info *info; |
| s8 rssi; |
| |
| info = hci_le_ev_skb_pull(hdev, skb, |
| HCI_EV_LE_ADVERTISING_REPORT, |
| sizeof(*info)); |
| if (!info) |
| break; |
| |
| if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, |
| info->length + 1)) |
| break; |
| |
| if (info->length <= max_adv_len(hdev)) { |
| rssi = info->data[info->length]; |
| process_adv_report(hdev, info->type, &info->bdaddr, |
| info->bdaddr_type, NULL, 0, |
| HCI_ADV_PHY_1M, 0, rssi, |
| info->data, info->length, false, |
| false, instant); |
| } else { |
| bt_dev_err(hdev, "Dropping invalid advertising data"); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) |
| { |
| if (evt_type & LE_EXT_ADV_LEGACY_PDU) { |
| switch (evt_type) { |
| case LE_LEGACY_ADV_IND: |
| return LE_ADV_IND; |
| case LE_LEGACY_ADV_DIRECT_IND: |
| return LE_ADV_DIRECT_IND; |
| case LE_LEGACY_ADV_SCAN_IND: |
| return LE_ADV_SCAN_IND; |
| case LE_LEGACY_NONCONN_IND: |
| return LE_ADV_NONCONN_IND; |
| case LE_LEGACY_SCAN_RSP_ADV: |
| case LE_LEGACY_SCAN_RSP_ADV_SCAN: |
| return LE_ADV_SCAN_RSP; |
| } |
| |
| goto invalid; |
| } |
| |
| if (evt_type & LE_EXT_ADV_CONN_IND) { |
| if (evt_type & LE_EXT_ADV_DIRECT_IND) |
| return LE_ADV_DIRECT_IND; |
| |
| return LE_ADV_IND; |
| } |
| |
| if (evt_type & LE_EXT_ADV_SCAN_RSP) |
| return LE_ADV_SCAN_RSP; |
| |
| if (evt_type & LE_EXT_ADV_SCAN_IND) |
| return LE_ADV_SCAN_IND; |
| |
| if (evt_type == LE_EXT_ADV_NON_CONN_IND || |
| evt_type & LE_EXT_ADV_DIRECT_IND) |
| return LE_ADV_NONCONN_IND; |
| |
| invalid: |
| bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", |
| evt_type); |
| |
| return LE_ADV_INVALID; |
| } |
| |
| static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_ext_adv_report *ev = data; |
| u64 instant = jiffies; |
| |
| if (!ev->num) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| while (ev->num--) { |
| struct hci_ev_le_ext_adv_info *info; |
| u8 legacy_evt_type; |
| u16 evt_type; |
| |
| info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, |
| sizeof(*info)); |
| if (!info) |
| break; |
| |
| if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, |
| info->length)) |
| break; |
| |
| evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; |
| legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); |
| if (legacy_evt_type != LE_ADV_INVALID) { |
| process_adv_report(hdev, legacy_evt_type, &info->bdaddr, |
| info->bdaddr_type, NULL, 0, |
| info->primary_phy, |
| info->secondary_phy, |
| info->rssi, info->data, info->length, |
| !(evt_type & LE_EXT_ADV_LEGACY_PDU), |
| false, instant); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) |
| { |
| struct hci_cp_le_pa_term_sync cp; |
| |
| memset(&cp, 0, sizeof(cp)); |
| cp.handle = handle; |
| |
| return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); |
| } |
| |
| static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_pa_sync_established *ev = data; |
| int mask = hdev->link_mode; |
| __u8 flags = 0; |
| struct hci_conn *pa_sync; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| hci_dev_clear_flag(hdev, HCI_PA_SYNC); |
| |
| mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); |
| if (!(mask & HCI_LM_ACCEPT)) { |
| hci_le_pa_term_sync(hdev, ev->handle); |
| goto unlock; |
| } |
| |
| if (!(flags & HCI_PROTO_DEFER)) |
| goto unlock; |
| |
| /* Add connection to indicate PA sync event */ |
| pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, |
| HCI_ROLE_SLAVE); |
| |
| if (IS_ERR(pa_sync)) |
| goto unlock; |
| |
| pa_sync->sync_handle = le16_to_cpu(ev->handle); |
| |
| if (ev->status) { |
| set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); |
| |
| /* Notify iso layer */ |
| hci_connect_cfm(pa_sync, ev->status); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_per_adv_report *ev = data; |
| int mask = hdev->link_mode; |
| __u8 flags = 0; |
| struct hci_conn *pa_sync; |
| |
| bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); |
| |
| hci_dev_lock(hdev); |
| |
| mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); |
| if (!(mask & HCI_LM_ACCEPT)) |
| goto unlock; |
| |
| if (!(flags & HCI_PROTO_DEFER)) |
| goto unlock; |
| |
| pa_sync = hci_conn_hash_lookup_pa_sync_handle |
| (hdev, |
| le16_to_cpu(ev->sync_handle)); |
| |
| if (!pa_sync) |
| goto unlock; |
| |
| if (ev->data_status == LE_PA_DATA_COMPLETE && |
| !test_and_set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags)) { |
| /* Notify iso layer */ |
| hci_connect_cfm(pa_sync, 0); |
| |
| /* Notify MGMT layer */ |
| mgmt_device_connected(hdev, pa_sync, NULL, 0); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_remote_feat_complete *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (conn) { |
| if (!ev->status) |
| memcpy(conn->features[0], ev->features, 8); |
| |
| if (conn->state == BT_CONFIG) { |
| __u8 status; |
| |
| /* If the local controller supports peripheral-initiated |
| * features exchange, but the remote controller does |
| * not, then it is possible that the error code 0x1a |
| * for unsupported remote feature gets returned. |
| * |
| * In this specific case, allow the connection to |
| * transition into connected state and mark it as |
| * successful. |
| */ |
| if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && |
| (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) |
| status = 0x00; |
| else |
| status = ev->status; |
| |
| conn->state = BT_CONNECTED; |
| hci_connect_cfm(conn, status); |
| hci_conn_drop(conn); |
| } |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_ltk_req *ev = data; |
| struct hci_cp_le_ltk_reply cp; |
| struct hci_cp_le_ltk_neg_reply neg; |
| struct hci_conn *conn; |
| struct smp_ltk *ltk; |
| |
| bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (conn == NULL) |
| goto not_found; |
| |
| ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); |
| if (!ltk) |
| goto not_found; |
| |
| if (smp_ltk_is_sc(ltk)) { |
| /* With SC both EDiv and Rand are set to zero */ |
| if (ev->ediv || ev->rand) |
| goto not_found; |
| } else { |
| /* For non-SC keys check that EDiv and Rand match */ |
| if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) |
| goto not_found; |
| } |
| |
| memcpy(cp.ltk, ltk->val, ltk->enc_size); |
| memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); |
| cp.handle = cpu_to_le16(conn->handle); |
| |
| conn->pending_sec_level = smp_ltk_sec_level(ltk); |
| |
| conn->enc_key_size = ltk->enc_size; |
| |
| hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); |
| |
| /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a |
| * temporary key used to encrypt a connection following |
| * pairing. It is used during the Encrypted Session Setup to |
| * distribute the keys. Later, security can be re-established |
| * using a distributed LTK. |
| */ |
| if (ltk->type == SMP_STK) { |
| set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); |
| list_del_rcu(<k->list); |
| kfree_rcu(ltk, rcu); |
| } else { |
| clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); |
| } |
| |
| hci_dev_unlock(hdev); |
| |
| return; |
| |
| not_found: |
| neg.handle = ev->handle; |
| hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); |
| hci_dev_unlock(hdev); |
| } |
| |
| static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, |
| u8 reason) |
| { |
| struct hci_cp_le_conn_param_req_neg_reply cp; |
| |
| cp.handle = cpu_to_le16(handle); |
| cp.reason = reason; |
| |
| hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), |
| &cp); |
| } |
| |
| static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_remote_conn_param_req *ev = data; |
| struct hci_cp_le_conn_param_req_reply cp; |
| struct hci_conn *hcon; |
| u16 handle, min, max, latency, timeout; |
| |
| bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); |
| |
| handle = le16_to_cpu(ev->handle); |
| min = le16_to_cpu(ev->interval_min); |
| max = le16_to_cpu(ev->interval_max); |
| latency = le16_to_cpu(ev->latency); |
| timeout = le16_to_cpu(ev->timeout); |
| |
| hcon = hci_conn_hash_lookup_handle(hdev, handle); |
| if (!hcon || hcon->state != BT_CONNECTED) |
| return send_conn_param_neg_reply(hdev, handle, |
| HCI_ERROR_UNKNOWN_CONN_ID); |
| |
| if (max > hcon->le_conn_max_interval) |
| return send_conn_param_neg_reply(hdev, handle, |
| HCI_ERROR_INVALID_LL_PARAMS); |
| |
| if (hci_check_conn_params(min, max, latency, timeout)) |
| return send_conn_param_neg_reply(hdev, handle, |
| HCI_ERROR_INVALID_LL_PARAMS); |
| |
| if (hcon->role == HCI_ROLE_MASTER) { |
| struct hci_conn_params *params; |
| u8 store_hint; |
| |
| hci_dev_lock(hdev); |
| |
| params = hci_conn_params_lookup(hdev, &hcon->dst, |
| hcon->dst_type); |
| if (params) { |
| params->conn_min_interval = min; |
| params->conn_max_interval = max; |
| params->conn_latency = latency; |
| params->supervision_timeout = timeout; |
| store_hint = 0x01; |
| } else { |
| store_hint = 0x00; |
| } |
| |
| hci_dev_unlock(hdev); |
| |
| mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, |
| store_hint, min, max, latency, timeout); |
| } |
| |
| cp.handle = ev->handle; |
| cp.interval_min = ev->interval_min; |
| cp.interval_max = ev->interval_max; |
| cp.latency = ev->latency; |
| cp.timeout = ev->timeout; |
| cp.min_ce_len = 0; |
| cp.max_ce_len = 0; |
| |
| hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); |
| } |
| |
| static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_direct_adv_report *ev = data; |
| u64 instant = jiffies; |
| int i; |
| |
| if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, |
| flex_array_size(ev, info, ev->num))) |
| return; |
| |
| if (!ev->num) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| for (i = 0; i < ev->num; i++) { |
| struct hci_ev_le_direct_adv_info *info = &ev->info[i]; |
| |
| process_adv_report(hdev, info->type, &info->bdaddr, |
| info->bdaddr_type, &info->direct_addr, |
| info->direct_addr_type, HCI_ADV_PHY_1M, 0, |
| info->rssi, NULL, 0, false, false, instant); |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_phy_update_complete *ev = data; |
| struct hci_conn *conn; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| if (ev->status) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); |
| if (!conn) |
| goto unlock; |
| |
| conn->le_tx_phy = ev->tx_phy; |
| conn->le_rx_phy = ev->rx_phy; |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_evt_le_cis_established *ev = data; |
| struct hci_conn *conn; |
| struct bt_iso_qos *qos; |
| bool pending = false; |
| u16 handle = __le16_to_cpu(ev->handle); |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| hci_dev_lock(hdev); |
| |
| conn = hci_conn_hash_lookup_handle(hdev, handle); |
| if (!conn) { |
| bt_dev_err(hdev, |
| "Unable to find connection with handle 0x%4.4x", |
| handle); |
| goto unlock; |
| } |
| |
| if (conn->type != ISO_LINK) { |
| bt_dev_err(hdev, |
| "Invalid connection link type handle 0x%4.4x", |
| handle); |
| goto unlock; |
| } |
| |
| qos = &conn->iso_qos; |
| |
| pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); |
| |
| /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */ |
| qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250; |
| qos->ucast.out.interval = qos->ucast.in.interval; |
| |
| switch (conn->role) { |
| case HCI_ROLE_SLAVE: |
| /* Convert Transport Latency (us) to Latency (msec) */ |
| qos->ucast.in.latency = |
| DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), |
| 1000); |
| qos->ucast.out.latency = |
| DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), |
| 1000); |
| qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); |
| qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); |
| qos->ucast.in.phy = ev->c_phy; |
| qos->ucast.out.phy = ev->p_phy; |
| break; |
| case HCI_ROLE_MASTER: |
| /* Convert Transport Latency (us) to Latency (msec) */ |
| qos->ucast.out.latency = |
| DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), |
| 1000); |
| qos->ucast.in.latency = |
| DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), |
| 1000); |
| qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); |
| qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); |
| qos->ucast.out.phy = ev->c_phy; |
| qos->ucast.in.phy = ev->p_phy; |
| break; |
| } |
| |
| if (!ev->status) { |
| conn->state = BT_CONNECTED; |
| hci_debugfs_create_conn(conn); |
| hci_conn_add_sysfs(conn); |
| hci_iso_setup_path(conn); |
| goto unlock; |
| } |
| |
| conn->state = BT_CLOSED; |
| hci_connect_cfm(conn, ev->status); |
| hci_conn_del(conn); |
| |
| unlock: |
| if (pending) |
| hci_le_create_cis_pending(hdev); |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) |
| { |
| struct hci_cp_le_reject_cis cp; |
| |
| memset(&cp, 0, sizeof(cp)); |
| cp.handle = handle; |
| cp.reason = HCI_ERROR_REJ_BAD_ADDR; |
| hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); |
| } |
| |
| static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) |
| { |
| struct hci_cp_le_accept_cis cp; |
| |
| memset(&cp, 0, sizeof(cp)); |
| cp.handle = handle; |
| hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); |
| } |
| |
| static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_evt_le_cis_req *ev = data; |
| u16 acl_handle, cis_handle; |
| struct hci_conn *acl, *cis; |
| int mask; |
| __u8 flags = 0; |
| |
| acl_handle = __le16_to_cpu(ev->acl_handle); |
| cis_handle = __le16_to_cpu(ev->cis_handle); |
| |
| bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", |
| acl_handle, cis_handle, ev->cig_id, ev->cis_id); |
| |
| hci_dev_lock(hdev); |
| |
| acl = hci_conn_hash_lookup_handle(hdev, acl_handle); |
| if (!acl) |
| goto unlock; |
| |
| mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); |
| if (!(mask & HCI_LM_ACCEPT)) { |
| hci_le_reject_cis(hdev, ev->cis_handle); |
| goto unlock; |
| } |
| |
| cis = hci_conn_hash_lookup_handle(hdev, cis_handle); |
| if (!cis) { |
| cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE, |
| cis_handle); |
| if (IS_ERR(cis)) { |
| hci_le_reject_cis(hdev, ev->cis_handle); |
| goto unlock; |
| } |
| } |
| |
| cis->iso_qos.ucast.cig = ev->cig_id; |
| cis->iso_qos.ucast.cis = ev->cis_id; |
| |
| if (!(flags & HCI_PROTO_DEFER)) { |
| hci_le_accept_cis(hdev, ev->cis_handle); |
| } else { |
| cis->state = BT_CONNECT2; |
| hci_connect_cfm(cis, 0); |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) |
| { |
| u8 handle = PTR_UINT(data); |
| |
| return hci_le_terminate_big_sync(hdev, handle, |
| HCI_ERROR_LOCAL_HOST_TERM); |
| } |
| |
| static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_evt_le_create_big_complete *ev = data; |
| struct hci_conn *conn; |
| __u8 i = 0; |
| |
| BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); |
| |
| if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, |
| flex_array_size(ev, bis_handle, ev->num_bis))) |
| return; |
| |
| hci_dev_lock(hdev); |
| rcu_read_lock(); |
| |
| /* Connect all BISes that are bound to the BIG */ |
| list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) { |
| if (bacmp(&conn->dst, BDADDR_ANY) || |
| conn->type != ISO_LINK || |
| conn->iso_qos.bcast.big != ev->handle) |
| continue; |
| |
| if (hci_conn_set_handle(conn, |
| __le16_to_cpu(ev->bis_handle[i++]))) |
| continue; |
| |
| if (!ev->status) { |
| conn->state = BT_CONNECTED; |
| set_bit(HCI_CONN_BIG_CREATED, &conn->flags); |
| rcu_read_unlock(); |
| hci_debugfs_create_conn(conn); |
| hci_conn_add_sysfs(conn); |
| hci_iso_setup_path(conn); |
| rcu_read_lock(); |
| continue; |
| } |
| |
| hci_connect_cfm(conn, ev->status); |
| rcu_read_unlock(); |
| hci_conn_del(conn); |
| rcu_read_lock(); |
| } |
| |
| rcu_read_unlock(); |
| |
| if (!ev->status && !i) |
| /* If no BISes have been connected for the BIG, |
| * terminate. This is in case all bound connections |
| * have been closed before the BIG creation |
| * has completed. |
| */ |
| hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, |
| UINT_PTR(ev->handle), NULL); |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_evt_le_big_sync_estabilished *ev = data; |
| struct hci_conn *bis; |
| int i; |
| |
| bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); |
| |
| if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, |
| flex_array_size(ev, bis, ev->num_bis))) |
| return; |
| |
| hci_dev_lock(hdev); |
| |
| for (i = 0; i < ev->num_bis; i++) { |
| u16 handle = le16_to_cpu(ev->bis[i]); |
| __le32 interval; |
| |
| bis = hci_conn_hash_lookup_handle(hdev, handle); |
| if (!bis) { |
| bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, |
| HCI_ROLE_SLAVE, handle); |
| if (IS_ERR(bis)) |
| continue; |
| } |
| |
| if (ev->status != 0x42) |
| /* Mark PA sync as established */ |
| set_bit(HCI_CONN_PA_SYNC, &bis->flags); |
| |
| bis->iso_qos.bcast.big = ev->handle; |
| memset(&interval, 0, sizeof(interval)); |
| memcpy(&interval, ev->latency, sizeof(ev->latency)); |
| bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); |
| /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ |
| bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; |
| bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); |
| |
| if (!ev->status) { |
| set_bit(HCI_CONN_BIG_SYNC, &bis->flags); |
| hci_iso_setup_path(bis); |
| } |
| } |
| |
| /* In case BIG sync failed, notify each failed connection to |
| * the user after all hci connections have been added |
| */ |
| if (ev->status) |
| for (i = 0; i < ev->num_bis; i++) { |
| u16 handle = le16_to_cpu(ev->bis[i]); |
| |
| bis = hci_conn_hash_lookup_handle(hdev, handle); |
| if (!bis) |
| continue; |
| |
| set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); |
| hci_connect_cfm(bis, ev->status); |
| } |
| |
| hci_dev_unlock(hdev); |
| } |
| |
| static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb) |
| { |
| struct hci_evt_le_big_info_adv_report *ev = data; |
| int mask = hdev->link_mode; |
| __u8 flags = 0; |
| struct hci_conn *pa_sync; |
| |
| bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); |
| |
| hci_dev_lock(hdev); |
| |
| mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); |
| if (!(mask & HCI_LM_ACCEPT)) |
| goto unlock; |
| |
| if (!(flags & HCI_PROTO_DEFER)) |
| goto unlock; |
| |
| pa_sync = hci_conn_hash_lookup_pa_sync_handle |
| (hdev, |
| le16_to_cpu(ev->sync_handle)); |
| |
| if (!pa_sync) |
| goto unlock; |
| |
| /* Notify iso layer */ |
| hci_connect_cfm(pa_sync, 0); |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ |
| [_op] = { \ |
| .func = _func, \ |
| .min_len = _min_len, \ |
| .max_len = _max_len, \ |
| } |
| |
| #define HCI_LE_EV(_op, _func, _len) \ |
| HCI_LE_EV_VL(_op, _func, _len, _len) |
| |
| #define HCI_LE_EV_STATUS(_op, _func) \ |
| HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) |
| |
| /* Entries in this table shall have their position according to the subevent |
| * opcode they handle so the use of the macros above is recommend since it does |
| * attempt to initialize at its proper index using Designated Initializers that |
| * way events without a callback function can be ommited. |
| */ |
| static const struct hci_le_ev { |
| void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); |
| u16 min_len; |
| u16 max_len; |
| } hci_le_ev_table[U8_MAX + 1] = { |
| /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ |
| HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, |
| sizeof(struct hci_ev_le_conn_complete)), |
| /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ |
| HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, |
| sizeof(struct hci_ev_le_advertising_report), |
| HCI_MAX_EVENT_SIZE), |
| /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ |
| HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, |
| hci_le_conn_update_complete_evt, |
| sizeof(struct hci_ev_le_conn_update_complete)), |
| /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ |
| HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, |
| hci_le_remote_feat_complete_evt, |
| sizeof(struct hci_ev_le_remote_feat_complete)), |
| /* [0x05 = HCI_EV_LE_LTK_REQ] */ |
| HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, |
| sizeof(struct hci_ev_le_ltk_req)), |
| /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ |
| HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, |
| hci_le_remote_conn_param_req_evt, |
| sizeof(struct hci_ev_le_remote_conn_param_req)), |
| /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ |
| HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, |
| hci_le_enh_conn_complete_evt, |
| sizeof(struct hci_ev_le_enh_conn_complete)), |
| /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ |
| HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, |
| sizeof(struct hci_ev_le_direct_adv_report), |
| HCI_MAX_EVENT_SIZE), |
| /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ |
| HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, |
| sizeof(struct hci_ev_le_phy_update_complete)), |
| /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ |
| HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, |
| sizeof(struct hci_ev_le_ext_adv_report), |
| HCI_MAX_EVENT_SIZE), |
| /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ |
| HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, |
| hci_le_pa_sync_estabilished_evt, |
| sizeof(struct hci_ev_le_pa_sync_established)), |
| /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ |
| HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, |
| hci_le_per_adv_report_evt, |
| sizeof(struct hci_ev_le_per_adv_report), |
| HCI_MAX_EVENT_SIZE), |
| /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ |
| HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, |
| sizeof(struct hci_evt_le_ext_adv_set_term)), |
| /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ |
| HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, |
| sizeof(struct hci_evt_le_cis_established)), |
| /* [0x1a = HCI_EVT_LE_CIS_REQ] */ |
| HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, |
| sizeof(struct hci_evt_le_cis_req)), |
| /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ |
| HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, |
| hci_le_create_big_complete_evt, |
| sizeof(struct hci_evt_le_create_big_complete), |
| HCI_MAX_EVENT_SIZE), |
| /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ |
| HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, |
| hci_le_big_sync_established_evt, |
| sizeof(struct hci_evt_le_big_sync_estabilished), |
| HCI_MAX_EVENT_SIZE), |
| /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ |
| HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, |
| hci_le_big_info_adv_report_evt, |
| sizeof(struct hci_evt_le_big_info_adv_report), |
| HCI_MAX_EVENT_SIZE), |
| }; |
| |
| static void hci_le_meta_evt(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb, u16 *opcode, u8 *status, |
| hci_req_complete_t *req_complete, |
| hci_req_complete_skb_t *req_complete_skb) |
| { |
| struct hci_ev_le_meta *ev = data; |
| const struct hci_le_ev *subev; |
| |
| bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); |
| |
| /* Only match event if command OGF is for LE */ |
| if (hdev->req_skb && |
| hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 && |
| hci_skb_event(hdev->req_skb) == ev->subevent) { |
| *opcode = hci_skb_opcode(hdev->req_skb); |
| hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, |
| req_complete_skb); |
| } |
| |
| subev = &hci_le_ev_table[ev->subevent]; |
| if (!subev->func) |
| return; |
| |
| if (skb->len < subev->min_len) { |
| bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", |
| ev->subevent, skb->len, subev->min_len); |
| return; |
| } |
| |
| /* Just warn if the length is over max_len size it still be |
| * possible to partially parse the event so leave to callback to |
| * decide if that is acceptable. |
| */ |
| if (skb->len > subev->max_len) |
| bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", |
| ev->subevent, skb->len, subev->max_len); |
| data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); |
| if (!data) |
| return; |
| |
| subev->func(hdev, data, skb); |
| } |
| |
| static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, |
| u8 event, struct sk_buff *skb) |
| { |
| struct hci_ev_cmd_complete *ev; |
| struct hci_event_hdr *hdr; |
| |
| if (!skb) |
| return false; |
| |
| hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); |
| if (!hdr) |
| return false; |
| |
| if (event) { |
| if (hdr->evt != event) |
| return false; |
| return true; |
| } |
| |
| /* Check if request ended in Command Status - no way to retrieve |
| * any extra parameters in this case. |
| */ |
| if (hdr->evt == HCI_EV_CMD_STATUS) |
| return false; |
| |
| if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
| bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", |
| hdr->evt); |
| return false; |
| } |
| |
| ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); |
| if (!ev) |
| return false; |
| |
| if (opcode != __le16_to_cpu(ev->opcode)) { |
| BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, |
| __le16_to_cpu(ev->opcode)); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, |
| struct sk_buff *skb) |
| { |
| struct hci_ev_le_advertising_info *adv; |
| struct hci_ev_le_direct_adv_info *direct_adv; |
| struct hci_ev_le_ext_adv_info *ext_adv; |
| const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; |
| const struct hci_ev_conn_request *conn_request = (void *)skb->data; |
| |
| hci_dev_lock(hdev); |
| |
| /* If we are currently suspended and this is the first BT event seen, |
| * save the wake reason associated with the event. |
| */ |
| if (!hdev->suspended || hdev->wake_reason) |
| goto unlock; |
| |
| /* Default to remote wake. Values for wake_reason are documented in the |
| * Bluez mgmt api docs. |
| */ |
| hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; |
| |
| /* Once configured for remote wakeup, we should only wake up for |
| * reconnections. It's useful to see which device is waking us up so |
| * keep track of the bdaddr of the connection event that woke us up. |
| */ |
| if (event == HCI_EV_CONN_REQUEST) { |
| bacpy(&hdev->wake_addr, &conn_request->bdaddr); |
| hdev->wake_addr_type = BDADDR_BREDR; |
| } else if (event == HCI_EV_CONN_COMPLETE) { |
| bacpy(&hdev->wake_addr, &conn_complete->bdaddr); |
| hdev->wake_addr_type = BDADDR_BREDR; |
| } else if (event == HCI_EV_LE_META) { |
| struct hci_ev_le_meta *le_ev = (void *)skb->data; |
| u8 subevent = le_ev->subevent; |
| u8 *ptr = &skb->data[sizeof(*le_ev)]; |
| u8 num_reports = *ptr; |
| |
| if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || |
| subevent == HCI_EV_LE_DIRECT_ADV_REPORT || |
| subevent == HCI_EV_LE_EXT_ADV_REPORT) && |
| num_reports) { |
| adv = (void *)(ptr + 1); |
| direct_adv = (void *)(ptr + 1); |
| ext_adv = (void *)(ptr + 1); |
| |
| switch (subevent) { |
| case HCI_EV_LE_ADVERTISING_REPORT: |
| bacpy(&hdev->wake_addr, &adv->bdaddr); |
| hdev->wake_addr_type = adv->bdaddr_type; |
| break; |
| case HCI_EV_LE_DIRECT_ADV_REPORT: |
| bacpy(&hdev->wake_addr, &direct_adv->bdaddr); |
| hdev->wake_addr_type = direct_adv->bdaddr_type; |
| break; |
| case HCI_EV_LE_EXT_ADV_REPORT: |
| bacpy(&hdev->wake_addr, &ext_adv->bdaddr); |
| hdev->wake_addr_type = ext_adv->bdaddr_type; |
| break; |
| } |
| } |
| } else { |
| hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; |
| } |
| |
| unlock: |
| hci_dev_unlock(hdev); |
| } |
| |
| #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ |
| [_op] = { \ |
| .req = false, \ |
| .func = _func, \ |
| .min_len = _min_len, \ |
| .max_len = _max_len, \ |
| } |
| |
| #define HCI_EV(_op, _func, _len) \ |
| HCI_EV_VL(_op, _func, _len, _len) |
| |
| #define HCI_EV_STATUS(_op, _func) \ |
| HCI_EV(_op, _func, sizeof(struct hci_ev_status)) |
| |
| #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ |
| [_op] = { \ |
| .req = true, \ |
| .func_req = _func, \ |
| .min_len = _min_len, \ |
| .max_len = _max_len, \ |
| } |
| |
| #define HCI_EV_REQ(_op, _func, _len) \ |
| HCI_EV_REQ_VL(_op, _func, _len, _len) |
| |
| /* Entries in this table shall have their position according to the event opcode |
| * they handle so the use of the macros above is recommend since it does attempt |
| * to initialize at its proper index using Designated Initializers that way |
| * events without a callback function don't have entered. |
| */ |
| static const struct hci_ev { |
| bool req; |
| union { |
| void (*func)(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb); |
| void (*func_req)(struct hci_dev *hdev, void *data, |
| struct sk_buff *skb, u16 *opcode, u8 *status, |
| hci_req_complete_t *req_complete, |
| hci_req_complete_skb_t *req_complete_skb); |
| }; |
| u16 min_len; |
| u16 max_len; |
| } hci_ev_table[U8_MAX + 1] = { |
| /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ |
| HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), |
| /* [0x02 = HCI_EV_INQUIRY_RESULT] */ |
| HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, |
| sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), |
| /* [0x03 = HCI_EV_CONN_COMPLETE] */ |
| HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, |
| sizeof(struct hci_ev_conn_complete)), |
| /* [0x04 = HCI_EV_CONN_REQUEST] */ |
| HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, |
| sizeof(struct hci_ev_conn_request)), |
| /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ |
| HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, |
| sizeof(struct hci_ev_disconn_complete)), |
| /* [0x06 = HCI_EV_AUTH_COMPLETE] */ |
| HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, |
| sizeof(struct hci_ev_auth_complete)), |
| /* [0x07 = HCI_EV_REMOTE_NAME] */ |
| HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, |
| sizeof(struct hci_ev_remote_name)), |
| /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ |
| HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, |
| sizeof(struct hci_ev_encrypt_change)), |
| /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ |
| HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, |
| hci_change_link_key_complete_evt, |
| sizeof(struct hci_ev_change_link_key_complete)), |
| /* [0x0b = HCI_EV_REMOTE_FEATURES] */ |
| HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, |
| sizeof(struct hci_ev_remote_features)), |
| /* [0x0e = HCI_EV_CMD_COMPLETE] */ |
| HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, |
| sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), |
| /* [0x0f = HCI_EV_CMD_STATUS] */ |
| HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, |
| sizeof(struct hci_ev_cmd_status)), |
| /* [0x10 = HCI_EV_CMD_STATUS] */ |
| HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, |
| sizeof(struct hci_ev_hardware_error)), |
| /* [0x12 = HCI_EV_ROLE_CHANGE] */ |
| HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, |
| sizeof(struct hci_ev_role_change)), |
| /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ |
| HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, |
| sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), |
| /* [0x14 = HCI_EV_MODE_CHANGE] */ |
| HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, |
| sizeof(struct hci_ev_mode_change)), |
| /* [0x16 = HCI_EV_PIN_CODE_REQ] */ |
| HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, |
| sizeof(struct hci_ev_pin_code_req)), |
| /* [0x17 = HCI_EV_LINK_KEY_REQ] */ |
| HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, |
| sizeof(struct hci_ev_link_key_req)), |
| /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ |
| HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, |
| sizeof(struct hci_ev_link_key_notify)), |
| /* [0x1c = HCI_EV_CLOCK_OFFSET] */ |
| HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, |
| sizeof(struct hci_ev_clock_offset)), |
| /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ |
| HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, |
| sizeof(struct hci_ev_pkt_type_change)), |
| /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ |
| HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, |
| sizeof(struct hci_ev_pscan_rep_mode)), |
| /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ |
| HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, |
| hci_inquiry_result_with_rssi_evt, |
| sizeof(struct hci_ev_inquiry_result_rssi), |
| HCI_MAX_EVENT_SIZE), |
| /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ |
| HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, |
| sizeof(struct hci_ev_remote_ext_features)), |
| /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ |
| HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, |
| sizeof(struct hci_ev_sync_conn_complete)), |
| /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ |
| HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, |
| hci_extended_inquiry_result_evt, |
| sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), |
| /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ |
| HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, |
| sizeof(struct hci_ev_key_refresh_complete)), |
| /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ |
| HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, |
| sizeof(struct hci_ev_io_capa_request)), |
| /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ |
| HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, |
| sizeof(struct hci_ev_io_capa_reply)), |
| /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ |
| HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, |
| sizeof(struct hci_ev_user_confirm_req)), |
| /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ |
| HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, |
| sizeof(struct hci_ev_user_passkey_req)), |
| /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ |
| HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, |
| sizeof(struct hci_ev_remote_oob_data_request)), |
| /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ |
| HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, |
| sizeof(struct hci_ev_simple_pair_complete)), |
| /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ |
| HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, |
| sizeof(struct hci_ev_user_passkey_notify)), |
| /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ |
| HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, |
| sizeof(struct hci_ev_keypress_notify)), |
| /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ |
| HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, |
| sizeof(struct hci_ev_remote_host_features)), |
| /* [0x3e = HCI_EV_LE_META] */ |
| HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, |
| sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), |
| /* [0xff = HCI_EV_VENDOR] */ |
| HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), |
| }; |
| |
| static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, |
| u16 *opcode, u8 *status, |
| hci_req_complete_t *req_complete, |
| hci_req_complete_skb_t *req_complete_skb) |
| { |
| const struct hci_ev *ev = &hci_ev_table[event]; |
| void *data; |
| |
| if (!ev->func) |
| return; |
| |
| if (skb->len < ev->min_len) { |
| bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", |
| event, skb->len, ev->min_len); |
| return; |
| } |
| |
| /* Just warn if the length is over max_len size it still be |
| * possible to partially parse the event so leave to callback to |
| * decide if that is acceptable. |
| */ |
| if (skb->len > ev->max_len) |
| bt_dev_warn_ratelimited(hdev, |
| "unexpected event 0x%2.2x length: %u > %u", |
| event, skb->len, ev->max_len); |
| |
| data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); |
| if (!data) |
| return; |
| |
| if (ev->req) |
| ev->func_req(hdev, data, skb, opcode, status, req_complete, |
| req_complete_skb); |
| else |
| ev->func(hdev, data, skb); |
| } |
| |
| void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) |
| { |
| struct hci_event_hdr *hdr = (void *) skb->data; |
| hci_req_complete_t req_complete = NULL; |
| hci_req_complete_skb_t req_complete_skb = NULL; |
| struct sk_buff *orig_skb = NULL; |
| u8 status = 0, event, req_evt = 0; |
| u16 opcode = HCI_OP_NOP; |
| |
| if (skb->len < sizeof(*hdr)) { |
| bt_dev_err(hdev, "Malformed HCI Event"); |
| goto done; |
| } |
| |
| kfree_skb(hdev->recv_event); |
| hdev->recv_event = skb_clone(skb, GFP_KERNEL); |
| |
| event = hdr->evt; |
| if (!event) { |
| bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", |
| event); |
| goto done; |
| } |
| |
| /* Only match event if command OGF is not for LE */ |
| if (hdev->req_skb && |
| hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && |
| hci_skb_event(hdev->req_skb) == event) { |
| hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), |
| status, &req_complete, &req_complete_skb); |
| req_evt = event; |
| } |
| |
| /* If it looks like we might end up having to call |
| * req_complete_skb, store a pristine copy of the skb since the |
| * various handlers may modify the original one through |
| * skb_pull() calls, etc. |
| */ |
| if (req_complete_skb || event == HCI_EV_CMD_STATUS || |
| event == HCI_EV_CMD_COMPLETE) |
| orig_skb = skb_clone(skb, GFP_KERNEL); |
| |
| skb_pull(skb, HCI_EVENT_HDR_SIZE); |
| |
| /* Store wake reason if we're suspended */ |
| hci_store_wake_reason(hdev, event, skb); |
| |
| bt_dev_dbg(hdev, "event 0x%2.2x", event); |
| |
| hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, |
| &req_complete_skb); |
| |
| if (req_complete) { |
| req_complete(hdev, status, opcode); |
| } else if (req_complete_skb) { |
| if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { |
| kfree_skb(orig_skb); |
| orig_skb = NULL; |
| } |
| req_complete_skb(hdev, status, opcode, orig_skb); |
| } |
| |
| done: |
| kfree_skb(orig_skb); |
| kfree_skb(skb); |
| hdev->stat.evt_rx++; |
| } |
