2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
26 /* Bluetooth HCI event handling. */
28 #include <asm/unaligned.h>
29 #include <linux/crypto.h>
30 #include <crypto/algapi.h>
32 #include <net/bluetooth/bluetooth.h>
33 #include <net/bluetooth/hci_core.h>
34 #include <net/bluetooth/mgmt.h>
36 #include "hci_request.h"
37 #include "hci_debugfs.h"
38 #include "hci_codec.h"
45 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
46 "\x00\x00\x00\x00\x00\x00\x00\x00"
48 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000)
50 /* Handle HCI Event packets */
52 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
57 data = skb_pull_data(skb, len);
59 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev);
64 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
69 data = skb_pull_data(skb, len);
71 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op);
76 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
81 data = skb_pull_data(skb, len);
83 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev);
88 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
91 struct hci_ev_status *rp = data;
93 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
95 /* It is possible that we receive Inquiry Complete event right
96 * before we receive Inquiry Cancel Command Complete event, in
97 * which case the latter event should have status of Command
98 * Disallowed (0x0c). This should not be treated as error, since
99 * we actually achieve what Inquiry Cancel wants to achieve,
100 * which is to end the last Inquiry session.
102 if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) {
103 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
110 clear_bit(HCI_INQUIRY, &hdev->flags);
111 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
112 wake_up_bit(&hdev->flags, HCI_INQUIRY);
115 /* Set discovery state to stopped if we're not doing LE active
118 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
119 hdev->le_scan_type != LE_SCAN_ACTIVE)
120 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
121 hci_dev_unlock(hdev);
123 hci_conn_check_pending(hdev);
128 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data,
131 struct hci_ev_status *rp = data;
133 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
138 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
143 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
146 struct hci_ev_status *rp = data;
148 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
153 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
155 hci_conn_check_pending(hdev);
160 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data,
163 struct hci_ev_status *rp = data;
165 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
170 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data,
173 struct hci_rp_role_discovery *rp = data;
174 struct hci_conn *conn;
176 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
183 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
185 conn->role = rp->role;
187 hci_dev_unlock(hdev);
192 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data,
195 struct hci_rp_read_link_policy *rp = data;
196 struct hci_conn *conn;
198 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
205 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
207 conn->link_policy = __le16_to_cpu(rp->policy);
209 hci_dev_unlock(hdev);
214 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data,
217 struct hci_rp_write_link_policy *rp = data;
218 struct hci_conn *conn;
221 struct hci_cp_write_link_policy cp;
222 struct hci_conn *sco_conn;
225 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
230 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
236 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
238 conn->link_policy = get_unaligned_le16(sent + 2);
241 sco_conn = hci_conn_hash_lookup_sco(hdev);
242 if (sco_conn && bacmp(&sco_conn->dst, &conn->dst) == 0 &&
243 conn->link_policy & HCI_LP_SNIFF) {
244 BT_ERR("SNIFF is not allowed during sco connection");
245 cp.handle = __cpu_to_le16(conn->handle);
246 cp.policy = __cpu_to_le16(conn->link_policy & ~HCI_LP_SNIFF);
247 hci_send_cmd(hdev, HCI_OP_WRITE_LINK_POLICY, sizeof(cp), &cp);
251 hci_dev_unlock(hdev);
256 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
259 struct hci_rp_read_def_link_policy *rp = data;
261 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
266 hdev->link_policy = __le16_to_cpu(rp->policy);
271 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
274 struct hci_ev_status *rp = data;
277 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
282 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
286 hdev->link_policy = get_unaligned_le16(sent);
291 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
293 struct hci_ev_status *rp = data;
295 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
297 clear_bit(HCI_RESET, &hdev->flags);
302 /* Reset all non-persistent flags */
303 hci_dev_clear_volatile_flags(hdev);
305 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
307 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
308 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
310 memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
311 hdev->adv_data_len = 0;
313 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
314 hdev->scan_rsp_data_len = 0;
316 hdev->le_scan_type = LE_SCAN_PASSIVE;
318 hdev->ssp_debug_mode = 0;
320 hci_bdaddr_list_clear(&hdev->le_accept_list);
321 hci_bdaddr_list_clear(&hdev->le_resolv_list);
326 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
329 struct hci_rp_read_stored_link_key *rp = data;
330 struct hci_cp_read_stored_link_key *sent;
332 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
334 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
338 if (!rp->status && sent->read_all == 0x01) {
339 hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
340 hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
346 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
349 struct hci_rp_delete_stored_link_key *rp = data;
352 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
357 num_keys = le16_to_cpu(rp->num_keys);
359 if (num_keys <= hdev->stored_num_keys)
360 hdev->stored_num_keys -= num_keys;
362 hdev->stored_num_keys = 0;
367 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
370 struct hci_ev_status *rp = data;
373 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
375 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
381 if (hci_dev_test_flag(hdev, HCI_MGMT))
382 mgmt_set_local_name_complete(hdev, sent, rp->status);
383 else if (!rp->status)
384 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
386 hci_dev_unlock(hdev);
391 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
394 struct hci_rp_read_local_name *rp = data;
396 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
401 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
402 hci_dev_test_flag(hdev, HCI_CONFIG))
403 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
408 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
411 struct hci_ev_status *rp = data;
414 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
416 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
423 __u8 param = *((__u8 *) sent);
425 if (param == AUTH_ENABLED)
426 set_bit(HCI_AUTH, &hdev->flags);
428 clear_bit(HCI_AUTH, &hdev->flags);
431 if (hci_dev_test_flag(hdev, HCI_MGMT))
432 mgmt_auth_enable_complete(hdev, rp->status);
434 hci_dev_unlock(hdev);
439 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
442 struct hci_ev_status *rp = data;
446 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
451 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
455 param = *((__u8 *) sent);
458 set_bit(HCI_ENCRYPT, &hdev->flags);
460 clear_bit(HCI_ENCRYPT, &hdev->flags);
465 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
468 struct hci_ev_status *rp = data;
472 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
474 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
478 param = *((__u8 *) sent);
483 hdev->discov_timeout = 0;
487 if (param & SCAN_INQUIRY)
488 set_bit(HCI_ISCAN, &hdev->flags);
490 clear_bit(HCI_ISCAN, &hdev->flags);
492 if (param & SCAN_PAGE)
493 set_bit(HCI_PSCAN, &hdev->flags);
495 clear_bit(HCI_PSCAN, &hdev->flags);
498 hci_dev_unlock(hdev);
503 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
506 struct hci_ev_status *rp = data;
507 struct hci_cp_set_event_filter *cp;
510 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
515 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
519 cp = (struct hci_cp_set_event_filter *)sent;
521 if (cp->flt_type == HCI_FLT_CLEAR_ALL)
522 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
524 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
529 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
532 struct hci_rp_read_class_of_dev *rp = data;
535 return HCI_ERROR_UNSPECIFIED;
537 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
542 memcpy(hdev->dev_class, rp->dev_class, 3);
544 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
545 hdev->dev_class[1], hdev->dev_class[0]);
550 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
553 struct hci_ev_status *rp = data;
556 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
558 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
565 memcpy(hdev->dev_class, sent, 3);
567 if (hci_dev_test_flag(hdev, HCI_MGMT))
568 mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
570 hci_dev_unlock(hdev);
575 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
578 struct hci_rp_read_voice_setting *rp = data;
581 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
586 setting = __le16_to_cpu(rp->voice_setting);
588 if (hdev->voice_setting == setting)
591 hdev->voice_setting = setting;
593 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
596 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
601 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
604 struct hci_ev_status *rp = data;
608 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
613 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
617 setting = get_unaligned_le16(sent);
619 if (hdev->voice_setting == setting)
622 hdev->voice_setting = setting;
624 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
627 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
632 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
635 struct hci_rp_read_num_supported_iac *rp = data;
637 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
642 hdev->num_iac = rp->num_iac;
644 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
649 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
652 struct hci_ev_status *rp = data;
653 struct hci_cp_write_ssp_mode *sent;
655 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
657 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
665 hdev->features[1][0] |= LMP_HOST_SSP;
667 hdev->features[1][0] &= ~LMP_HOST_SSP;
672 hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
674 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
677 hci_dev_unlock(hdev);
682 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
685 struct hci_ev_status *rp = data;
686 struct hci_cp_write_sc_support *sent;
688 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
690 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
698 hdev->features[1][0] |= LMP_HOST_SC;
700 hdev->features[1][0] &= ~LMP_HOST_SC;
703 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
705 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
707 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
710 hci_dev_unlock(hdev);
715 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
718 struct hci_rp_read_local_version *rp = data;
720 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
725 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
726 hci_dev_test_flag(hdev, HCI_CONFIG)) {
727 hdev->hci_ver = rp->hci_ver;
728 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
729 hdev->lmp_ver = rp->lmp_ver;
730 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
731 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
737 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
740 struct hci_rp_read_enc_key_size *rp = data;
741 struct hci_conn *conn;
743 u8 status = rp->status;
745 bt_dev_dbg(hdev, "status 0x%2.2x", status);
747 handle = le16_to_cpu(rp->handle);
751 conn = hci_conn_hash_lookup_handle(hdev, handle);
757 /* While unexpected, the read_enc_key_size command may fail. The most
758 * secure approach is to then assume the key size is 0 to force a
762 bt_dev_err(hdev, "failed to read key size for handle %u",
764 conn->enc_key_size = 0;
766 conn->enc_key_size = rp->key_size;
769 if (conn->enc_key_size < hdev->min_enc_key_size) {
770 /* As slave role, the conn->state has been set to
771 * BT_CONNECTED and l2cap conn req might not be received
772 * yet, at this moment the l2cap layer almost does
773 * nothing with the non-zero status.
774 * So we also clear encrypt related bits, and then the
775 * handler of l2cap conn req will get the right secure
776 * state at a later time.
778 status = HCI_ERROR_AUTH_FAILURE;
779 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
780 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
784 hci_encrypt_cfm(conn, status);
787 hci_dev_unlock(hdev);
792 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
795 struct hci_rp_read_local_commands *rp = data;
797 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
802 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
803 hci_dev_test_flag(hdev, HCI_CONFIG))
804 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
809 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
812 struct hci_rp_read_auth_payload_to *rp = data;
813 struct hci_conn *conn;
815 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
822 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
824 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
826 hci_dev_unlock(hdev);
831 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
834 struct hci_rp_write_auth_payload_to *rp = data;
835 struct hci_conn *conn;
838 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
840 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
846 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
853 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
856 hci_dev_unlock(hdev);
861 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
864 struct hci_rp_read_local_features *rp = data;
866 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
871 memcpy(hdev->features, rp->features, 8);
873 /* Adjust default settings according to features
874 * supported by device. */
876 if (hdev->features[0][0] & LMP_3SLOT)
877 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
879 if (hdev->features[0][0] & LMP_5SLOT)
880 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
882 if (hdev->features[0][1] & LMP_HV2) {
883 hdev->pkt_type |= (HCI_HV2);
884 hdev->esco_type |= (ESCO_HV2);
887 if (hdev->features[0][1] & LMP_HV3) {
888 hdev->pkt_type |= (HCI_HV3);
889 hdev->esco_type |= (ESCO_HV3);
892 if (lmp_esco_capable(hdev))
893 hdev->esco_type |= (ESCO_EV3);
895 if (hdev->features[0][4] & LMP_EV4)
896 hdev->esco_type |= (ESCO_EV4);
898 if (hdev->features[0][4] & LMP_EV5)
899 hdev->esco_type |= (ESCO_EV5);
901 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
902 hdev->esco_type |= (ESCO_2EV3);
904 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
905 hdev->esco_type |= (ESCO_3EV3);
907 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
908 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
913 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
916 struct hci_rp_read_local_ext_features *rp = data;
918 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
923 if (hdev->max_page < rp->max_page) {
924 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
926 bt_dev_warn(hdev, "broken local ext features page 2");
928 hdev->max_page = rp->max_page;
931 if (rp->page < HCI_MAX_PAGES)
932 memcpy(hdev->features[rp->page], rp->features, 8);
937 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
940 struct hci_rp_read_flow_control_mode *rp = data;
942 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
947 hdev->flow_ctl_mode = rp->mode;
952 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
955 struct hci_rp_read_buffer_size *rp = data;
957 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
962 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
963 hdev->sco_mtu = rp->sco_mtu;
964 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
965 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
967 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
972 hdev->acl_cnt = hdev->acl_pkts;
973 hdev->sco_cnt = hdev->sco_pkts;
975 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
976 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
981 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
984 struct hci_rp_read_bd_addr *rp = data;
986 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
991 if (test_bit(HCI_INIT, &hdev->flags))
992 bacpy(&hdev->bdaddr, &rp->bdaddr);
994 if (hci_dev_test_flag(hdev, HCI_SETUP))
995 bacpy(&hdev->setup_addr, &rp->bdaddr);
1000 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
1001 struct sk_buff *skb)
1003 struct hci_rp_read_local_pairing_opts *rp = data;
1005 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1010 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
1011 hci_dev_test_flag(hdev, HCI_CONFIG)) {
1012 hdev->pairing_opts = rp->pairing_opts;
1013 hdev->max_enc_key_size = rp->max_key_size;
1019 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
1020 struct sk_buff *skb)
1022 struct hci_rp_read_page_scan_activity *rp = data;
1024 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1029 if (test_bit(HCI_INIT, &hdev->flags)) {
1030 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
1031 hdev->page_scan_window = __le16_to_cpu(rp->window);
1037 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
1038 struct sk_buff *skb)
1040 struct hci_ev_status *rp = data;
1041 struct hci_cp_write_page_scan_activity *sent;
1043 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1048 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1052 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1053 hdev->page_scan_window = __le16_to_cpu(sent->window);
1058 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1059 struct sk_buff *skb)
1061 struct hci_rp_read_page_scan_type *rp = data;
1063 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1068 if (test_bit(HCI_INIT, &hdev->flags))
1069 hdev->page_scan_type = rp->type;
1074 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1075 struct sk_buff *skb)
1077 struct hci_ev_status *rp = data;
1080 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1085 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1087 hdev->page_scan_type = *type;
1092 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
1093 struct sk_buff *skb)
1095 struct hci_rp_read_data_block_size *rp = data;
1097 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1102 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
1103 hdev->block_len = __le16_to_cpu(rp->block_len);
1104 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
1106 hdev->block_cnt = hdev->num_blocks;
1108 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
1109 hdev->block_cnt, hdev->block_len);
1114 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1115 struct sk_buff *skb)
1117 struct hci_rp_read_clock *rp = data;
1118 struct hci_cp_read_clock *cp;
1119 struct hci_conn *conn;
1121 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1128 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1132 if (cp->which == 0x00) {
1133 hdev->clock = le32_to_cpu(rp->clock);
1137 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1139 conn->clock = le32_to_cpu(rp->clock);
1140 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1144 hci_dev_unlock(hdev);
1148 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
1149 struct sk_buff *skb)
1151 struct hci_rp_read_local_amp_info *rp = data;
1153 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1158 hdev->amp_status = rp->amp_status;
1159 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
1160 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
1161 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
1162 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
1163 hdev->amp_type = rp->amp_type;
1164 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
1165 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
1166 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
1167 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
1172 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1173 struct sk_buff *skb)
1175 struct hci_rp_read_inq_rsp_tx_power *rp = data;
1177 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1182 hdev->inq_tx_power = rp->tx_power;
1187 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1188 struct sk_buff *skb)
1190 struct hci_rp_read_def_err_data_reporting *rp = data;
1192 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1197 hdev->err_data_reporting = rp->err_data_reporting;
1202 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1203 struct sk_buff *skb)
1205 struct hci_ev_status *rp = data;
1206 struct hci_cp_write_def_err_data_reporting *cp;
1208 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1213 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1217 hdev->err_data_reporting = cp->err_data_reporting;
1222 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1223 struct sk_buff *skb)
1225 struct hci_rp_pin_code_reply *rp = data;
1226 struct hci_cp_pin_code_reply *cp;
1227 struct hci_conn *conn;
1229 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1233 if (hci_dev_test_flag(hdev, HCI_MGMT))
1234 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
1239 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1243 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1245 conn->pin_length = cp->pin_len;
1248 hci_dev_unlock(hdev);
1252 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1253 struct sk_buff *skb)
1255 struct hci_rp_pin_code_neg_reply *rp = data;
1257 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1261 if (hci_dev_test_flag(hdev, HCI_MGMT))
1262 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1265 hci_dev_unlock(hdev);
1270 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1271 struct sk_buff *skb)
1273 struct hci_rp_le_read_buffer_size *rp = data;
1275 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1280 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1281 hdev->le_pkts = rp->le_max_pkt;
1283 hdev->le_cnt = hdev->le_pkts;
1285 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1290 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1291 struct sk_buff *skb)
1293 struct hci_rp_le_read_local_features *rp = data;
1295 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1300 memcpy(hdev->le_features, rp->features, 8);
1305 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1306 struct sk_buff *skb)
1308 struct hci_rp_le_read_adv_tx_power *rp = data;
1310 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1315 hdev->adv_tx_power = rp->tx_power;
1320 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1321 struct sk_buff *skb)
1323 struct hci_rp_user_confirm_reply *rp = data;
1325 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1329 if (hci_dev_test_flag(hdev, HCI_MGMT))
1330 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1333 hci_dev_unlock(hdev);
1338 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
1339 struct sk_buff *skb)
1341 struct hci_rp_user_confirm_reply *rp = data;
1343 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1347 if (hci_dev_test_flag(hdev, HCI_MGMT))
1348 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1349 ACL_LINK, 0, rp->status);
1351 hci_dev_unlock(hdev);
1356 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
1357 struct sk_buff *skb)
1359 struct hci_rp_user_confirm_reply *rp = data;
1361 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1365 if (hci_dev_test_flag(hdev, HCI_MGMT))
1366 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1369 hci_dev_unlock(hdev);
1374 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
1375 struct sk_buff *skb)
1377 struct hci_rp_user_confirm_reply *rp = data;
1379 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1383 if (hci_dev_test_flag(hdev, HCI_MGMT))
1384 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1385 ACL_LINK, 0, rp->status);
1387 hci_dev_unlock(hdev);
1392 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1393 struct sk_buff *skb)
1395 struct hci_rp_read_local_oob_data *rp = data;
1397 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1402 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1403 struct sk_buff *skb)
1405 struct hci_rp_read_local_oob_ext_data *rp = data;
1407 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1412 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1413 struct sk_buff *skb)
1415 struct hci_ev_status *rp = data;
1418 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1423 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1429 bacpy(&hdev->random_addr, sent);
1431 if (!bacmp(&hdev->rpa, sent)) {
1432 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1433 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
1434 secs_to_jiffies(hdev->rpa_timeout));
1437 hci_dev_unlock(hdev);
1442 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1443 struct sk_buff *skb)
1445 struct hci_ev_status *rp = data;
1446 struct hci_cp_le_set_default_phy *cp;
1448 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1453 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1459 hdev->le_tx_def_phys = cp->tx_phys;
1460 hdev->le_rx_def_phys = cp->rx_phys;
1462 hci_dev_unlock(hdev);
1467 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1468 struct sk_buff *skb)
1470 struct hci_ev_status *rp = data;
1471 struct hci_cp_le_set_adv_set_rand_addr *cp;
1472 struct adv_info *adv;
1474 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1479 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1480 /* Update only in case the adv instance since handle 0x00 shall be using
1481 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1482 * non-extended adverting.
1484 if (!cp || !cp->handle)
1489 adv = hci_find_adv_instance(hdev, cp->handle);
1491 bacpy(&adv->random_addr, &cp->bdaddr);
1492 if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
1493 adv->rpa_expired = false;
1494 queue_delayed_work(hdev->workqueue,
1495 &adv->rpa_expired_cb,
1496 secs_to_jiffies(hdev->rpa_timeout));
1500 hci_dev_unlock(hdev);
1505 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1506 struct sk_buff *skb)
1508 struct hci_ev_status *rp = data;
1512 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1517 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1523 err = hci_remove_adv_instance(hdev, *instance);
1525 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1528 hci_dev_unlock(hdev);
1533 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1534 struct sk_buff *skb)
1536 struct hci_ev_status *rp = data;
1537 struct adv_info *adv, *n;
1540 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1545 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1550 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1551 u8 instance = adv->instance;
1553 err = hci_remove_adv_instance(hdev, instance);
1555 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1559 hci_dev_unlock(hdev);
1564 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1565 struct sk_buff *skb)
1567 struct hci_rp_le_read_transmit_power *rp = data;
1569 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1574 hdev->min_le_tx_power = rp->min_le_tx_power;
1575 hdev->max_le_tx_power = rp->max_le_tx_power;
1580 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1581 struct sk_buff *skb)
1583 struct hci_ev_status *rp = data;
1584 struct hci_cp_le_set_privacy_mode *cp;
1585 struct hci_conn_params *params;
1587 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1592 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1598 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
1600 WRITE_ONCE(params->privacy_mode, cp->mode);
1602 hci_dev_unlock(hdev);
1607 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1608 struct sk_buff *skb)
1610 struct hci_ev_status *rp = data;
1613 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1618 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1624 /* If we're doing connection initiation as peripheral. Set a
1625 * timeout in case something goes wrong.
1628 struct hci_conn *conn;
1630 hci_dev_set_flag(hdev, HCI_LE_ADV);
1632 conn = hci_lookup_le_connect(hdev);
1634 queue_delayed_work(hdev->workqueue,
1635 &conn->le_conn_timeout,
1636 conn->conn_timeout);
1638 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1641 hci_dev_unlock(hdev);
1646 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1647 struct sk_buff *skb)
1649 struct hci_cp_le_set_ext_adv_enable *cp;
1650 struct hci_cp_ext_adv_set *set;
1651 struct adv_info *adv = NULL, *n;
1652 struct hci_ev_status *rp = data;
1654 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1659 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1663 set = (void *)cp->data;
1667 if (cp->num_of_sets)
1668 adv = hci_find_adv_instance(hdev, set->handle);
1671 struct hci_conn *conn;
1673 hci_dev_set_flag(hdev, HCI_LE_ADV);
1675 if (adv && !adv->periodic)
1676 adv->enabled = true;
1678 conn = hci_lookup_le_connect(hdev);
1680 queue_delayed_work(hdev->workqueue,
1681 &conn->le_conn_timeout,
1682 conn->conn_timeout);
1684 if (cp->num_of_sets) {
1686 adv->enabled = false;
1688 /* If just one instance was disabled check if there are
1689 * any other instance enabled before clearing HCI_LE_ADV
1691 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1697 /* All instances shall be considered disabled */
1698 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1700 adv->enabled = false;
1703 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1707 hci_dev_unlock(hdev);
1711 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1712 struct sk_buff *skb)
1714 struct hci_cp_le_set_scan_param *cp;
1715 struct hci_ev_status *rp = data;
1717 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1722 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1728 hdev->le_scan_type = cp->type;
1730 hci_dev_unlock(hdev);
1735 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1736 struct sk_buff *skb)
1738 struct hci_cp_le_set_ext_scan_params *cp;
1739 struct hci_ev_status *rp = data;
1740 struct hci_cp_le_scan_phy_params *phy_param;
1742 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1747 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1751 phy_param = (void *)cp->data;
1755 hdev->le_scan_type = phy_param->type;
1757 hci_dev_unlock(hdev);
1762 static bool has_pending_adv_report(struct hci_dev *hdev)
1764 struct discovery_state *d = &hdev->discovery;
1766 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1769 static void clear_pending_adv_report(struct hci_dev *hdev)
1771 struct discovery_state *d = &hdev->discovery;
1773 bacpy(&d->last_adv_addr, BDADDR_ANY);
1774 d->last_adv_data_len = 0;
1778 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1779 u8 bdaddr_type, s8 rssi, u32 flags,
1782 struct discovery_state *d = &hdev->discovery;
1784 if (len > max_adv_len(hdev))
1787 bacpy(&d->last_adv_addr, bdaddr);
1788 d->last_adv_addr_type = bdaddr_type;
1789 d->last_adv_rssi = rssi;
1790 d->last_adv_flags = flags;
1791 memcpy(d->last_adv_data, data, len);
1792 d->last_adv_data_len = len;
1796 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1801 case LE_SCAN_ENABLE:
1802 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1803 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1804 clear_pending_adv_report(hdev);
1805 if (hci_dev_test_flag(hdev, HCI_MESH))
1806 hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1809 case LE_SCAN_DISABLE:
1810 /* We do this here instead of when setting DISCOVERY_STOPPED
1811 * since the latter would potentially require waiting for
1812 * inquiry to stop too.
1814 if (has_pending_adv_report(hdev)) {
1815 struct discovery_state *d = &hdev->discovery;
1817 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1818 d->last_adv_addr_type, NULL,
1819 d->last_adv_rssi, d->last_adv_flags,
1821 d->last_adv_data_len, NULL, 0, 0);
1824 /* Cancel this timer so that we don't try to disable scanning
1825 * when it's already disabled.
1827 cancel_delayed_work(&hdev->le_scan_disable);
1829 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1831 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1832 * interrupted scanning due to a connect request. Mark
1833 * therefore discovery as stopped.
1835 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1836 #ifndef TIZEN_BT /* The below line is kernel bug. */
1837 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1839 hci_le_discovery_set_state(hdev, DISCOVERY_STOPPED);
1841 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1842 hdev->discovery.state == DISCOVERY_FINDING)
1843 queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1848 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1853 hci_dev_unlock(hdev);
1856 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1857 struct sk_buff *skb)
1859 struct hci_cp_le_set_scan_enable *cp;
1860 struct hci_ev_status *rp = data;
1862 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1867 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1871 le_set_scan_enable_complete(hdev, cp->enable);
1876 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1877 struct sk_buff *skb)
1879 struct hci_cp_le_set_ext_scan_enable *cp;
1880 struct hci_ev_status *rp = data;
1882 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1887 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1891 le_set_scan_enable_complete(hdev, cp->enable);
1896 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1897 struct sk_buff *skb)
1899 struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1901 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1907 hdev->le_num_of_adv_sets = rp->num_of_sets;
1912 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1913 struct sk_buff *skb)
1915 struct hci_rp_le_read_accept_list_size *rp = data;
1917 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1922 hdev->le_accept_list_size = rp->size;
1927 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1928 struct sk_buff *skb)
1930 struct hci_ev_status *rp = data;
1932 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1938 hci_bdaddr_list_clear(&hdev->le_accept_list);
1939 hci_dev_unlock(hdev);
1944 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1945 struct sk_buff *skb)
1947 struct hci_cp_le_add_to_accept_list *sent;
1948 struct hci_ev_status *rp = data;
1950 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1955 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1960 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1962 hci_dev_unlock(hdev);
1967 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1968 struct sk_buff *skb)
1970 struct hci_cp_le_del_from_accept_list *sent;
1971 struct hci_ev_status *rp = data;
1973 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1978 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1983 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1985 hci_dev_unlock(hdev);
1990 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1991 struct sk_buff *skb)
1993 struct hci_rp_le_read_supported_states *rp = data;
1995 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2000 memcpy(hdev->le_states, rp->le_states, 8);
2005 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
2006 struct sk_buff *skb)
2008 struct hci_rp_le_read_def_data_len *rp = data;
2010 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2015 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
2016 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
2021 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
2022 struct sk_buff *skb)
2024 struct hci_cp_le_write_def_data_len *sent;
2025 struct hci_ev_status *rp = data;
2027 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2036 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
2044 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
2045 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
2050 mgmt_le_write_host_suggested_data_length_complete(hdev, rp->status);
2055 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
2056 struct sk_buff *skb)
2058 struct hci_cp_le_add_to_resolv_list *sent;
2059 struct hci_ev_status *rp = data;
2061 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2066 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2071 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2072 sent->bdaddr_type, sent->peer_irk,
2074 hci_dev_unlock(hdev);
2079 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2080 struct sk_buff *skb)
2082 struct hci_cp_le_del_from_resolv_list *sent;
2083 struct hci_ev_status *rp = data;
2085 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2090 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2095 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2097 hci_dev_unlock(hdev);
2102 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2103 struct sk_buff *skb)
2105 struct hci_ev_status *rp = data;
2107 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2113 hci_bdaddr_list_clear(&hdev->le_resolv_list);
2114 hci_dev_unlock(hdev);
2119 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2120 struct sk_buff *skb)
2122 struct hci_rp_le_read_resolv_list_size *rp = data;
2124 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2129 hdev->le_resolv_list_size = rp->size;
2134 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2135 struct sk_buff *skb)
2137 struct hci_ev_status *rp = data;
2140 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2145 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2152 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2154 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2156 hci_dev_unlock(hdev);
2161 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2162 struct sk_buff *skb)
2164 struct hci_rp_le_read_max_data_len *rp = data;
2166 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2175 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2176 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2177 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2178 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2181 mgmt_le_read_maximum_data_length_complete(hdev, rp->status);
2182 hci_dev_unlock(hdev);
2188 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2189 struct sk_buff *skb)
2191 struct hci_cp_write_le_host_supported *sent;
2192 struct hci_ev_status *rp = data;
2194 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2199 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2206 hdev->features[1][0] |= LMP_HOST_LE;
2207 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2209 hdev->features[1][0] &= ~LMP_HOST_LE;
2210 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2211 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2215 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2217 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2219 hci_dev_unlock(hdev);
2224 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2225 struct sk_buff *skb)
2227 struct hci_cp_le_set_adv_param *cp;
2228 struct hci_ev_status *rp = data;
2230 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2235 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2240 hdev->adv_addr_type = cp->own_address_type;
2241 hci_dev_unlock(hdev);
2246 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2247 struct sk_buff *skb)
2249 struct hci_rp_le_set_ext_adv_params *rp = data;
2250 struct hci_cp_le_set_ext_adv_params *cp;
2251 struct adv_info *adv_instance;
2253 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2258 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2263 hdev->adv_addr_type = cp->own_addr_type;
2265 /* Store in hdev for instance 0 */
2266 hdev->adv_tx_power = rp->tx_power;
2268 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2270 adv_instance->tx_power = rp->tx_power;
2272 /* Update adv data as tx power is known now */
2273 hci_update_adv_data(hdev, cp->handle);
2275 hci_dev_unlock(hdev);
2281 static u8 hci_cc_enable_rssi(struct hci_dev *hdev, void *data,
2282 struct sk_buff *skb)
2284 struct hci_cc_rsp_enable_rssi *rp = data;
2286 BT_DBG("hci_cc_enable_rssi - %s status 0x%2.2x Event_LE_ext_Opcode 0x%2.2x",
2287 hdev->name, rp->status, rp->le_ext_opcode);
2289 mgmt_enable_rssi_cc(hdev, rp, rp->status);
2294 static u8 hci_cc_get_raw_rssi(struct hci_dev *hdev, void *data,
2295 struct sk_buff *skb)
2297 struct hci_cc_rp_get_raw_rssi *rp = data;
2299 BT_DBG("hci_cc_get_raw_rssi- %s Get Raw Rssi Response[%2.2x %4.4x %2.2X]",
2300 hdev->name, rp->status, rp->conn_handle, rp->rssi_dbm);
2302 mgmt_raw_rssi_response(hdev, rp, rp->status);
2307 static void hci_vendor_ext_rssi_link_alert_evt(struct hci_dev *hdev,
2308 struct sk_buff *skb)
2310 struct hci_ev_vendor_specific_rssi_alert *ev = (void *)skb->data;
2312 BT_DBG("RSSI event LE_RSSI_LINK_ALERT %X", LE_RSSI_LINK_ALERT);
2314 mgmt_rssi_alert_evt(hdev, ev->conn_handle, ev->alert_type,
2318 static void hci_vendor_specific_group_ext_evt(struct hci_dev *hdev,
2319 struct sk_buff *skb)
2321 struct hci_ev_ext_vendor_specific *ev = (void *)skb->data;
2322 __u8 event_le_ext_sub_code;
2324 BT_DBG("RSSI event LE_META_VENDOR_SPECIFIC_GROUP_EVENT: %X",
2325 LE_META_VENDOR_SPECIFIC_GROUP_EVENT);
2327 skb_pull(skb, sizeof(*ev));
2328 event_le_ext_sub_code = ev->event_le_ext_sub_code;
2330 switch (event_le_ext_sub_code) {
2331 case LE_RSSI_LINK_ALERT:
2332 hci_vendor_ext_rssi_link_alert_evt(hdev, skb);
2340 static void hci_vendor_multi_adv_state_change_evt(struct hci_dev *hdev,
2341 struct sk_buff *skb)
2343 struct hci_ev_vendor_specific_multi_adv_state *ev = (void *)skb->data;
2345 BT_DBG("LE_MULTI_ADV_STATE_CHANGE_SUB_EVENT");
2347 mgmt_multi_adv_state_change_evt(hdev, ev->adv_instance,
2348 ev->state_change_reason,
2349 ev->connection_handle);
2352 static void hci_vendor_specific_evt(struct hci_dev *hdev, void *data,
2353 struct sk_buff *skb)
2355 struct hci_ev_vendor_specific *ev = (void *)skb->data;
2356 __u8 event_sub_code;
2358 BT_DBG("hci_vendor_specific_evt");
2360 skb_pull(skb, sizeof(*ev));
2361 event_sub_code = ev->event_sub_code;
2363 switch (event_sub_code) {
2364 case LE_META_VENDOR_SPECIFIC_GROUP_EVENT:
2365 hci_vendor_specific_group_ext_evt(hdev, skb);
2368 case LE_MULTI_ADV_STATE_CHANGE_SUB_EVENT:
2369 hci_vendor_multi_adv_state_change_evt(hdev, skb);
2378 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2379 struct sk_buff *skb)
2381 struct hci_rp_read_rssi *rp = data;
2382 struct hci_conn *conn;
2384 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2391 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2393 conn->rssi = rp->rssi;
2395 hci_dev_unlock(hdev);
2400 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2401 struct sk_buff *skb)
2403 struct hci_cp_read_tx_power *sent;
2404 struct hci_rp_read_tx_power *rp = data;
2405 struct hci_conn *conn;
2407 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2412 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2418 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2422 switch (sent->type) {
2424 conn->tx_power = rp->tx_power;
2427 conn->max_tx_power = rp->tx_power;
2432 hci_dev_unlock(hdev);
2436 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2437 struct sk_buff *skb)
2439 struct hci_ev_status *rp = data;
2442 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2447 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2449 hdev->ssp_debug_mode = *mode;
2454 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2456 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2459 hci_conn_check_pending(hdev);
2463 if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY))
2464 set_bit(HCI_INQUIRY, &hdev->flags);
2467 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2469 struct hci_cp_create_conn *cp;
2470 struct hci_conn *conn;
2472 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2474 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2480 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2482 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2485 if (conn && conn->state == BT_CONNECT) {
2486 if (status != 0x0c || conn->attempt > 2) {
2487 conn->state = BT_CLOSED;
2488 hci_connect_cfm(conn, status);
2491 conn->state = BT_CONNECT2;
2495 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr,
2498 bt_dev_err(hdev, "no memory for new connection");
2502 hci_dev_unlock(hdev);
2505 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2507 struct hci_cp_add_sco *cp;
2508 struct hci_conn *acl;
2509 struct hci_link *link;
2512 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2517 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2521 handle = __le16_to_cpu(cp->handle);
2523 bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2527 acl = hci_conn_hash_lookup_handle(hdev, handle);
2529 link = list_first_entry_or_null(&acl->link_list,
2530 struct hci_link, list);
2531 if (link && link->conn) {
2532 link->conn->state = BT_CLOSED;
2534 hci_connect_cfm(link->conn, status);
2535 hci_conn_del(link->conn);
2539 hci_dev_unlock(hdev);
2542 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2544 struct hci_cp_auth_requested *cp;
2545 struct hci_conn *conn;
2547 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2552 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2558 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2560 if (conn->state == BT_CONFIG) {
2561 hci_connect_cfm(conn, status);
2562 hci_conn_drop(conn);
2566 hci_dev_unlock(hdev);
2569 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2571 struct hci_cp_set_conn_encrypt *cp;
2572 struct hci_conn *conn;
2574 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2579 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2585 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2587 if (conn->state == BT_CONFIG) {
2588 hci_connect_cfm(conn, status);
2589 hci_conn_drop(conn);
2593 hci_dev_unlock(hdev);
2596 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2597 struct hci_conn *conn)
2599 if (conn->state != BT_CONFIG || !conn->out)
2602 if (conn->pending_sec_level == BT_SECURITY_SDP)
2605 /* Only request authentication for SSP connections or non-SSP
2606 * devices with sec_level MEDIUM or HIGH or if MITM protection
2609 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2610 conn->pending_sec_level != BT_SECURITY_FIPS &&
2611 conn->pending_sec_level != BT_SECURITY_HIGH &&
2612 conn->pending_sec_level != BT_SECURITY_MEDIUM)
2618 static int hci_resolve_name(struct hci_dev *hdev,
2619 struct inquiry_entry *e)
2621 struct hci_cp_remote_name_req cp;
2623 memset(&cp, 0, sizeof(cp));
2625 bacpy(&cp.bdaddr, &e->data.bdaddr);
2626 cp.pscan_rep_mode = e->data.pscan_rep_mode;
2627 cp.pscan_mode = e->data.pscan_mode;
2628 cp.clock_offset = e->data.clock_offset;
2630 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2633 static bool hci_resolve_next_name(struct hci_dev *hdev)
2635 struct discovery_state *discov = &hdev->discovery;
2636 struct inquiry_entry *e;
2638 if (list_empty(&discov->resolve))
2641 /* We should stop if we already spent too much time resolving names. */
2642 if (time_after(jiffies, discov->name_resolve_timeout)) {
2643 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2647 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2651 if (hci_resolve_name(hdev, e) == 0) {
2652 e->name_state = NAME_PENDING;
2659 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2660 bdaddr_t *bdaddr, u8 *name, u8 name_len)
2662 struct discovery_state *discov = &hdev->discovery;
2663 struct inquiry_entry *e;
2666 /* Update the mgmt connected state if necessary. Be careful with
2667 * conn objects that exist but are not (yet) connected however.
2668 * Only those in BT_CONFIG or BT_CONNECTED states can be
2669 * considered connected.
2672 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) {
2673 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2674 mgmt_device_connected(hdev, conn, name, name_len);
2676 mgmt_device_name_update(hdev, bdaddr, name, name_len);
2680 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2681 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2682 mgmt_device_connected(hdev, conn, name, name_len);
2685 if (discov->state == DISCOVERY_STOPPED)
2688 if (discov->state == DISCOVERY_STOPPING)
2689 goto discov_complete;
2691 if (discov->state != DISCOVERY_RESOLVING)
2694 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2695 /* If the device was not found in a list of found devices names of which
2696 * are pending. there is no need to continue resolving a next name as it
2697 * will be done upon receiving another Remote Name Request Complete
2704 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2705 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2708 if (hci_resolve_next_name(hdev))
2712 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2715 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2717 struct hci_cp_remote_name_req *cp;
2718 struct hci_conn *conn;
2720 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2722 /* If successful wait for the name req complete event before
2723 * checking for the need to do authentication */
2727 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2733 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2735 if (hci_dev_test_flag(hdev, HCI_MGMT))
2736 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2741 if (!hci_outgoing_auth_needed(hdev, conn))
2744 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2745 struct hci_cp_auth_requested auth_cp;
2747 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2749 auth_cp.handle = __cpu_to_le16(conn->handle);
2750 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2751 sizeof(auth_cp), &auth_cp);
2755 hci_dev_unlock(hdev);
2758 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2760 struct hci_cp_read_remote_features *cp;
2761 struct hci_conn *conn;
2763 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2768 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2774 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2776 if (conn->state == BT_CONFIG) {
2777 hci_connect_cfm(conn, status);
2778 hci_conn_drop(conn);
2782 hci_dev_unlock(hdev);
2785 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2787 struct hci_cp_read_remote_ext_features *cp;
2788 struct hci_conn *conn;
2790 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2795 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2801 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2803 if (conn->state == BT_CONFIG) {
2804 hci_connect_cfm(conn, status);
2805 hci_conn_drop(conn);
2809 hci_dev_unlock(hdev);
2812 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle,
2815 struct hci_conn *acl;
2816 struct hci_link *link;
2818 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status);
2822 acl = hci_conn_hash_lookup_handle(hdev, handle);
2824 link = list_first_entry_or_null(&acl->link_list,
2825 struct hci_link, list);
2826 if (link && link->conn) {
2827 link->conn->state = BT_CLOSED;
2829 hci_connect_cfm(link->conn, status);
2830 hci_conn_del(link->conn);
2834 hci_dev_unlock(hdev);
2837 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2839 struct hci_cp_setup_sync_conn *cp;
2841 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2846 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2850 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2853 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2855 struct hci_cp_enhanced_setup_sync_conn *cp;
2857 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2862 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2866 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2869 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2871 struct hci_cp_sniff_mode *cp;
2872 struct hci_conn *conn;
2874 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2879 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2885 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2887 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2889 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2890 hci_sco_setup(conn, status);
2893 hci_dev_unlock(hdev);
2896 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2898 struct hci_cp_exit_sniff_mode *cp;
2899 struct hci_conn *conn;
2901 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2906 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2912 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2914 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2916 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2917 hci_sco_setup(conn, status);
2920 hci_dev_unlock(hdev);
2923 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2925 struct hci_cp_disconnect *cp;
2926 struct hci_conn_params *params;
2927 struct hci_conn *conn;
2930 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2932 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2933 * otherwise cleanup the connection immediately.
2935 if (!status && !hdev->suspended)
2938 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2944 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2949 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2950 conn->dst_type, status);
2952 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2953 hdev->cur_adv_instance = conn->adv_instance;
2954 hci_enable_advertising(hdev);
2957 /* Inform sockets conn is gone before we delete it */
2958 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED);
2963 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2965 if (conn->type == ACL_LINK) {
2966 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2967 hci_remove_link_key(hdev, &conn->dst);
2970 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2972 switch (params->auto_connect) {
2973 case HCI_AUTO_CONN_LINK_LOSS:
2974 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2978 case HCI_AUTO_CONN_DIRECT:
2979 case HCI_AUTO_CONN_ALWAYS:
2980 hci_pend_le_list_del_init(params);
2981 hci_pend_le_list_add(params, &hdev->pend_le_conns);
2989 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2990 cp->reason, mgmt_conn);
2992 hci_disconn_cfm(conn, cp->reason);
2995 /* If the disconnection failed for any reason, the upper layer
2996 * does not retry to disconnect in current implementation.
2997 * Hence, we need to do some basic cleanup here and re-enable
2998 * advertising if necessary.
3002 hci_dev_unlock(hdev);
3005 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
3007 /* When using controller based address resolution, then the new
3008 * address types 0x02 and 0x03 are used. These types need to be
3009 * converted back into either public address or random address type
3012 case ADDR_LE_DEV_PUBLIC_RESOLVED:
3015 return ADDR_LE_DEV_PUBLIC;
3016 case ADDR_LE_DEV_RANDOM_RESOLVED:
3019 return ADDR_LE_DEV_RANDOM;
3027 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
3028 u8 peer_addr_type, u8 own_address_type,
3031 struct hci_conn *conn;
3033 conn = hci_conn_hash_lookup_le(hdev, peer_addr,
3038 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
3040 /* Store the initiator and responder address information which
3041 * is needed for SMP. These values will not change during the
3042 * lifetime of the connection.
3044 conn->init_addr_type = own_address_type;
3045 if (own_address_type == ADDR_LE_DEV_RANDOM)
3046 bacpy(&conn->init_addr, &hdev->random_addr);
3048 bacpy(&conn->init_addr, &hdev->bdaddr);
3050 conn->resp_addr_type = peer_addr_type;
3051 bacpy(&conn->resp_addr, peer_addr);
3054 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
3056 struct hci_cp_le_create_conn *cp;
3058 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3060 /* All connection failure handling is taken care of by the
3061 * hci_conn_failed function which is triggered by the HCI
3062 * request completion callbacks used for connecting.
3067 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
3073 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3074 cp->own_address_type, cp->filter_policy);
3076 hci_dev_unlock(hdev);
3079 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
3081 struct hci_cp_le_ext_create_conn *cp;
3083 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3085 /* All connection failure handling is taken care of by the
3086 * hci_conn_failed function which is triggered by the HCI
3087 * request completion callbacks used for connecting.
3092 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
3098 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3099 cp->own_addr_type, cp->filter_policy);
3101 hci_dev_unlock(hdev);
3104 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
3106 struct hci_cp_le_read_remote_features *cp;
3107 struct hci_conn *conn;
3109 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3114 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
3120 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3122 if (conn->state == BT_CONFIG) {
3123 hci_connect_cfm(conn, status);
3124 hci_conn_drop(conn);
3128 hci_dev_unlock(hdev);
3131 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
3133 struct hci_cp_le_start_enc *cp;
3134 struct hci_conn *conn;
3136 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3143 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
3147 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3151 if (conn->state != BT_CONNECTED)
3154 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3155 hci_conn_drop(conn);
3158 hci_dev_unlock(hdev);
3161 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
3163 struct hci_cp_switch_role *cp;
3164 struct hci_conn *conn;
3166 BT_DBG("%s status 0x%2.2x", hdev->name, status);
3171 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3177 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3179 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3181 hci_dev_unlock(hdev);
3184 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3185 struct sk_buff *skb)
3187 struct hci_ev_status *ev = data;
3188 struct discovery_state *discov = &hdev->discovery;
3189 struct inquiry_entry *e;
3191 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3193 hci_conn_check_pending(hdev);
3195 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3198 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3199 wake_up_bit(&hdev->flags, HCI_INQUIRY);
3201 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3206 if (discov->state != DISCOVERY_FINDING)
3209 if (list_empty(&discov->resolve)) {
3210 /* When BR/EDR inquiry is active and no LE scanning is in
3211 * progress, then change discovery state to indicate completion.
3213 * When running LE scanning and BR/EDR inquiry simultaneously
3214 * and the LE scan already finished, then change the discovery
3215 * state to indicate completion.
3217 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3218 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3219 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3223 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3224 if (e && hci_resolve_name(hdev, e) == 0) {
3225 e->name_state = NAME_PENDING;
3226 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3227 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3229 /* When BR/EDR inquiry is active and no LE scanning is in
3230 * progress, then change discovery state to indicate completion.
3232 * When running LE scanning and BR/EDR inquiry simultaneously
3233 * and the LE scan already finished, then change the discovery
3234 * state to indicate completion.
3236 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3237 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3238 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3242 hci_dev_unlock(hdev);
3245 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3246 struct sk_buff *skb)
3248 struct hci_ev_inquiry_result *ev = edata;
3249 struct inquiry_data data;
3252 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3253 flex_array_size(ev, info, ev->num)))
3256 bt_dev_dbg(hdev, "num %d", ev->num);
3261 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3266 for (i = 0; i < ev->num; i++) {
3267 struct inquiry_info *info = &ev->info[i];
3270 bacpy(&data.bdaddr, &info->bdaddr);
3271 data.pscan_rep_mode = info->pscan_rep_mode;
3272 data.pscan_period_mode = info->pscan_period_mode;
3273 data.pscan_mode = info->pscan_mode;
3274 memcpy(data.dev_class, info->dev_class, 3);
3275 data.clock_offset = info->clock_offset;
3276 data.rssi = HCI_RSSI_INVALID;
3277 data.ssp_mode = 0x00;
3279 flags = hci_inquiry_cache_update(hdev, &data, false);
3281 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3282 info->dev_class, HCI_RSSI_INVALID,
3283 flags, NULL, 0, NULL, 0, 0);
3286 hci_dev_unlock(hdev);
3289 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3290 struct sk_buff *skb)
3292 struct hci_ev_conn_complete *ev = data;
3293 struct hci_conn *conn;
3294 u8 status = ev->status;
3296 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3300 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3302 /* In case of error status and there is no connection pending
3303 * just unlock as there is nothing to cleanup.
3308 /* Connection may not exist if auto-connected. Check the bredr
3309 * allowlist to see if this device is allowed to auto connect.
3310 * If link is an ACL type, create a connection class
3313 * Auto-connect will only occur if the event filter is
3314 * programmed with a given address. Right now, event filter is
3315 * only used during suspend.
3317 if (ev->link_type == ACL_LINK &&
3318 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3321 conn = hci_conn_add_unset(hdev, ev->link_type,
3322 &ev->bdaddr, HCI_ROLE_SLAVE);
3324 bt_dev_err(hdev, "no memory for new conn");
3328 if (ev->link_type != SCO_LINK)
3331 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3336 conn->type = SCO_LINK;
3340 /* The HCI_Connection_Complete event is only sent once per connection.
3341 * Processing it more than once per connection can corrupt kernel memory.
3343 * As the connection handle is set here for the first time, it indicates
3344 * whether the connection is already set up.
3346 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
3347 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3352 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
3356 if (conn->type == ACL_LINK) {
3357 conn->state = BT_CONFIG;
3358 hci_conn_hold(conn);
3360 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3361 !hci_find_link_key(hdev, &ev->bdaddr))
3362 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3364 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3366 conn->state = BT_CONNECTED;
3368 hci_debugfs_create_conn(conn);
3369 hci_conn_add_sysfs(conn);
3371 if (test_bit(HCI_AUTH, &hdev->flags))
3372 set_bit(HCI_CONN_AUTH, &conn->flags);
3374 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3375 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3377 /* Get remote features */
3378 if (conn->type == ACL_LINK) {
3379 struct hci_cp_read_remote_features cp;
3380 cp.handle = ev->handle;
3381 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3384 hci_update_scan(hdev);
3387 /* Set packet type for incoming connection */
3388 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3389 struct hci_cp_change_conn_ptype cp;
3390 cp.handle = ev->handle;
3391 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3392 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3397 if (get_link_mode(conn) & HCI_LM_MASTER)
3398 hci_conn_change_supervision_timeout(conn,
3399 LINK_SUPERVISION_TIMEOUT);
3403 if (conn->type == ACL_LINK)
3404 hci_sco_setup(conn, ev->status);
3408 hci_conn_failed(conn, status);
3409 } else if (ev->link_type == SCO_LINK) {
3410 switch (conn->setting & SCO_AIRMODE_MASK) {
3411 case SCO_AIRMODE_CVSD:
3413 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3417 hci_connect_cfm(conn, status);
3421 hci_dev_unlock(hdev);
3423 hci_conn_check_pending(hdev);
3426 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3428 struct hci_cp_reject_conn_req cp;
3430 bacpy(&cp.bdaddr, bdaddr);
3431 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3432 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3435 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3436 struct sk_buff *skb)
3438 struct hci_ev_conn_request *ev = data;
3439 int mask = hdev->link_mode;
3440 struct inquiry_entry *ie;
3441 struct hci_conn *conn;
3444 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3446 /* Reject incoming connection from device with same BD ADDR against
3449 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) {
3450 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n",
3452 hci_reject_conn(hdev, &ev->bdaddr);
3456 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3459 if (!(mask & HCI_LM_ACCEPT)) {
3460 hci_reject_conn(hdev, &ev->bdaddr);
3466 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3468 hci_reject_conn(hdev, &ev->bdaddr);
3472 /* Require HCI_CONNECTABLE or an accept list entry to accept the
3473 * connection. These features are only touched through mgmt so
3474 * only do the checks if HCI_MGMT is set.
3476 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3477 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3478 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3480 hci_reject_conn(hdev, &ev->bdaddr);
3484 /* Connection accepted */
3486 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3488 memcpy(ie->data.dev_class, ev->dev_class, 3);
3491 if ((ev->link_type == SCO_LINK || ev->link_type == ESCO_LINK) &&
3492 hci_conn_hash_lookup_sco(hdev)) {
3493 struct hci_cp_reject_conn_req cp;
3495 bacpy(&cp.bdaddr, &ev->bdaddr);
3496 cp.reason = HCI_ERROR_REJ_LIMITED_RESOURCES;
3497 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ,
3499 hci_dev_unlock(hdev);
3504 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3507 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr,
3510 bt_dev_err(hdev, "no memory for new connection");
3515 memcpy(conn->dev_class, ev->dev_class, 3);
3517 hci_dev_unlock(hdev);
3519 if (ev->link_type == ACL_LINK ||
3520 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3521 struct hci_cp_accept_conn_req cp;
3522 conn->state = BT_CONNECT;
3524 bacpy(&cp.bdaddr, &ev->bdaddr);
3526 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3527 cp.role = 0x00; /* Become central */
3529 cp.role = 0x01; /* Remain peripheral */
3531 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3532 } else if (!(flags & HCI_PROTO_DEFER)) {
3533 struct hci_cp_accept_sync_conn_req cp;
3534 conn->state = BT_CONNECT;
3536 bacpy(&cp.bdaddr, &ev->bdaddr);
3537 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3539 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
3540 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
3541 cp.max_latency = cpu_to_le16(0xffff);
3542 cp.content_format = cpu_to_le16(hdev->voice_setting);
3543 cp.retrans_effort = 0xff;
3545 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3548 conn->state = BT_CONNECT2;
3549 hci_connect_cfm(conn, 0);
3554 hci_dev_unlock(hdev);
3557 static u8 hci_to_mgmt_reason(u8 err)
3560 case HCI_ERROR_CONNECTION_TIMEOUT:
3561 return MGMT_DEV_DISCONN_TIMEOUT;
3562 case HCI_ERROR_REMOTE_USER_TERM:
3563 case HCI_ERROR_REMOTE_LOW_RESOURCES:
3564 case HCI_ERROR_REMOTE_POWER_OFF:
3565 return MGMT_DEV_DISCONN_REMOTE;
3566 case HCI_ERROR_LOCAL_HOST_TERM:
3567 return MGMT_DEV_DISCONN_LOCAL_HOST;
3569 return MGMT_DEV_DISCONN_UNKNOWN;
3573 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3574 struct sk_buff *skb)
3576 struct hci_ev_disconn_complete *ev = data;
3578 struct hci_conn_params *params;
3579 struct hci_conn *conn;
3580 bool mgmt_connected;
3582 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3586 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3591 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3592 conn->dst_type, ev->status);
3596 conn->state = BT_CLOSED;
3598 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3600 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3601 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3603 reason = hci_to_mgmt_reason(ev->reason);
3605 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3606 reason, mgmt_connected);
3608 if (conn->type == ACL_LINK) {
3609 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3610 hci_remove_link_key(hdev, &conn->dst);
3612 hci_update_scan(hdev);
3615 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3617 switch (params->auto_connect) {
3618 case HCI_AUTO_CONN_LINK_LOSS:
3619 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3623 case HCI_AUTO_CONN_DIRECT:
3624 case HCI_AUTO_CONN_ALWAYS:
3625 hci_pend_le_list_del_init(params);
3626 hci_pend_le_list_add(params, &hdev->pend_le_conns);
3627 hci_update_passive_scan(hdev);
3635 hci_disconn_cfm(conn, ev->reason);
3637 /* Re-enable advertising if necessary, since it might
3638 * have been disabled by the connection. From the
3639 * HCI_LE_Set_Advertise_Enable command description in
3640 * the core specification (v4.0):
3641 * "The Controller shall continue advertising until the Host
3642 * issues an LE_Set_Advertise_Enable command with
3643 * Advertising_Enable set to 0x00 (Advertising is disabled)
3644 * or until a connection is created or until the Advertising
3645 * is timed out due to Directed Advertising."
3647 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3648 hdev->cur_adv_instance = conn->adv_instance;
3649 hci_enable_advertising(hdev);
3655 if (conn->type == ACL_LINK && !hci_conn_num(hdev, ACL_LINK)) {
3659 iscan = test_bit(HCI_ISCAN, &hdev->flags);
3660 pscan = test_bit(HCI_PSCAN, &hdev->flags);
3661 if (!iscan && !pscan) {
3662 u8 scan_enable = SCAN_PAGE;
3664 hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE,
3665 sizeof(scan_enable), &scan_enable);
3671 hci_dev_unlock(hdev);
3674 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3675 struct sk_buff *skb)
3677 struct hci_ev_auth_complete *ev = data;
3678 struct hci_conn *conn;
3680 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3684 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3689 /* PIN or Key Missing patch */
3690 BT_DBG("remote_auth %x, remote_cap %x, auth_type %x, io_capability %x",
3691 conn->remote_auth, conn->remote_cap,
3692 conn->auth_type, conn->io_capability);
3694 if (ev->status == 0x06 && hci_conn_ssp_enabled(conn)) {
3695 struct hci_cp_auth_requested cp;
3697 BT_DBG("Pin or key missing");
3698 hci_remove_link_key(hdev, &conn->dst);
3699 cp.handle = cpu_to_le16(conn->handle);
3700 hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED,
3707 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3708 set_bit(HCI_CONN_AUTH, &conn->flags);
3709 conn->sec_level = conn->pending_sec_level;
3711 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3712 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3714 mgmt_auth_failed(conn, ev->status);
3717 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3719 if (conn->state == BT_CONFIG) {
3720 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3721 struct hci_cp_set_conn_encrypt cp;
3722 cp.handle = ev->handle;
3724 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3727 conn->state = BT_CONNECTED;
3728 hci_connect_cfm(conn, ev->status);
3729 hci_conn_drop(conn);
3732 hci_auth_cfm(conn, ev->status);
3734 hci_conn_hold(conn);
3735 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3736 hci_conn_drop(conn);
3739 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3741 struct hci_cp_set_conn_encrypt cp;
3742 cp.handle = ev->handle;
3744 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3747 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3748 hci_encrypt_cfm(conn, ev->status);
3753 hci_dev_unlock(hdev);
3756 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3757 struct sk_buff *skb)
3759 struct hci_ev_remote_name *ev = data;
3760 struct hci_conn *conn;
3762 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3764 hci_conn_check_pending(hdev);
3768 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3770 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3773 if (ev->status == 0)
3774 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3775 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3777 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3783 if (!hci_outgoing_auth_needed(hdev, conn))
3786 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3787 struct hci_cp_auth_requested cp;
3789 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3791 cp.handle = __cpu_to_le16(conn->handle);
3792 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3796 hci_dev_unlock(hdev);
3799 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3800 struct sk_buff *skb)
3802 struct hci_ev_encrypt_change *ev = data;
3803 struct hci_conn *conn;
3805 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3809 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3815 /* Encryption implies authentication */
3816 set_bit(HCI_CONN_AUTH, &conn->flags);
3817 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3818 conn->sec_level = conn->pending_sec_level;
3820 /* P-256 authentication key implies FIPS */
3821 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3822 set_bit(HCI_CONN_FIPS, &conn->flags);
3824 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3825 conn->type == LE_LINK)
3826 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3828 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3829 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3833 /* We should disregard the current RPA and generate a new one
3834 * whenever the encryption procedure fails.
3836 if (ev->status && conn->type == LE_LINK) {
3837 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3838 hci_adv_instances_set_rpa_expired(hdev, true);
3841 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3843 /* Check link security requirements are met */
3844 if (!hci_conn_check_link_mode(conn))
3845 ev->status = HCI_ERROR_AUTH_FAILURE;
3847 if (ev->status && conn->state == BT_CONNECTED) {
3848 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3849 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3851 /* Notify upper layers so they can cleanup before
3854 hci_encrypt_cfm(conn, ev->status);
3855 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3856 hci_conn_drop(conn);
3860 /* Try reading the encryption key size for encrypted ACL links */
3861 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3862 struct hci_cp_read_enc_key_size cp;
3864 /* Only send HCI_Read_Encryption_Key_Size if the
3865 * controller really supports it. If it doesn't, assume
3866 * the default size (16).
3868 if (!(hdev->commands[20] & 0x10)) {
3869 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3873 cp.handle = cpu_to_le16(conn->handle);
3874 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3876 bt_dev_err(hdev, "sending read key size failed");
3877 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3884 /* Set the default Authenticated Payload Timeout after
3885 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3886 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3887 * sent when the link is active and Encryption is enabled, the conn
3888 * type can be either LE or ACL and controller must support LMP Ping.
3889 * Ensure for AES-CCM encryption as well.
3891 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3892 test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3893 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3894 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3895 struct hci_cp_write_auth_payload_to cp;
3897 cp.handle = cpu_to_le16(conn->handle);
3898 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3899 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3901 bt_dev_err(hdev, "write auth payload timeout failed");
3905 hci_encrypt_cfm(conn, ev->status);
3908 hci_dev_unlock(hdev);
3911 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3912 struct sk_buff *skb)
3914 struct hci_ev_change_link_key_complete *ev = data;
3915 struct hci_conn *conn;
3917 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3921 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3924 set_bit(HCI_CONN_SECURE, &conn->flags);
3926 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3928 hci_key_change_cfm(conn, ev->status);
3931 hci_dev_unlock(hdev);
3934 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3935 struct sk_buff *skb)
3937 struct hci_ev_remote_features *ev = data;
3938 struct hci_conn *conn;
3940 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3944 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3949 memcpy(conn->features[0], ev->features, 8);
3951 if (conn->state != BT_CONFIG)
3954 if (!ev->status && lmp_ext_feat_capable(hdev) &&
3955 lmp_ext_feat_capable(conn)) {
3956 struct hci_cp_read_remote_ext_features cp;
3957 cp.handle = ev->handle;
3959 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3964 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3965 struct hci_cp_remote_name_req cp;
3966 memset(&cp, 0, sizeof(cp));
3967 bacpy(&cp.bdaddr, &conn->dst);
3968 cp.pscan_rep_mode = 0x02;
3969 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3970 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3971 mgmt_device_connected(hdev, conn, NULL, 0);
3973 if (!hci_outgoing_auth_needed(hdev, conn)) {
3974 conn->state = BT_CONNECTED;
3975 hci_connect_cfm(conn, ev->status);
3976 hci_conn_drop(conn);
3980 hci_dev_unlock(hdev);
3983 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3985 cancel_delayed_work(&hdev->cmd_timer);
3988 if (!test_bit(HCI_RESET, &hdev->flags)) {
3990 cancel_delayed_work(&hdev->ncmd_timer);
3991 atomic_set(&hdev->cmd_cnt, 1);
3993 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3994 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
4001 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
4002 struct sk_buff *skb)
4004 struct hci_rp_le_read_buffer_size_v2 *rp = data;
4006 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4011 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu);
4012 hdev->le_pkts = rp->acl_max_pkt;
4013 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu);
4014 hdev->iso_pkts = rp->iso_max_pkt;
4016 hdev->le_cnt = hdev->le_pkts;
4017 hdev->iso_cnt = hdev->iso_pkts;
4019 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
4020 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
4025 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status)
4027 struct hci_conn *conn, *tmp;
4029 lockdep_assert_held(&hdev->lock);
4031 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
4032 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) ||
4033 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig)
4036 if (HCI_CONN_HANDLE_UNSET(conn->handle))
4037 hci_conn_failed(conn, status);
4041 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
4042 struct sk_buff *skb)
4044 struct hci_rp_le_set_cig_params *rp = data;
4045 struct hci_cp_le_set_cig_params *cp;
4046 struct hci_conn *conn;
4047 u8 status = rp->status;
4048 bool pending = false;
4051 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4053 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS);
4054 if (!rp->status && (!cp || rp->num_handles != cp->num_cis ||
4055 rp->cig_id != cp->cig_id)) {
4056 bt_dev_err(hdev, "unexpected Set CIG Parameters response data");
4057 status = HCI_ERROR_UNSPECIFIED;
4062 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554
4064 * If the Status return parameter is non-zero, then the state of the CIG
4065 * and its CIS configurations shall not be changed by the command. If
4066 * the CIG did not already exist, it shall not be created.
4069 /* Keep current configuration, fail only the unbound CIS */
4070 hci_unbound_cis_failed(hdev, rp->cig_id, status);
4074 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553
4076 * If the Status return parameter is zero, then the Controller shall
4077 * set the Connection_Handle arrayed return parameter to the connection
4078 * handle(s) corresponding to the CIS configurations specified in
4079 * the CIS_IDs command parameter, in the same order.
4081 for (i = 0; i < rp->num_handles; ++i) {
4082 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id,
4084 if (!conn || !bacmp(&conn->dst, BDADDR_ANY))
4087 if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
4090 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i])))
4093 if (conn->state == BT_CONNECT)
4099 hci_le_create_cis_pending(hdev);
4101 hci_dev_unlock(hdev);
4106 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
4107 struct sk_buff *skb)
4109 struct hci_rp_le_setup_iso_path *rp = data;
4110 struct hci_cp_le_setup_iso_path *cp;
4111 struct hci_conn *conn;
4113 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4115 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
4121 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
4126 hci_connect_cfm(conn, rp->status);
4131 switch (cp->direction) {
4132 /* Input (Host to Controller) */
4134 /* Only confirm connection if output only */
4135 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu)
4136 hci_connect_cfm(conn, rp->status);
4138 /* Output (Controller to Host) */
4140 /* Confirm connection since conn->iso_qos is always configured
4143 hci_connect_cfm(conn, rp->status);
4148 hci_dev_unlock(hdev);
4152 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
4154 bt_dev_dbg(hdev, "status 0x%2.2x", status);
4157 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
4158 struct sk_buff *skb)
4160 struct hci_ev_status *rp = data;
4161 struct hci_cp_le_set_per_adv_params *cp;
4163 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4168 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
4172 /* TODO: set the conn state */
4176 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
4177 struct sk_buff *skb)
4179 struct hci_ev_status *rp = data;
4180 struct hci_cp_le_set_per_adv_enable *cp;
4181 struct adv_info *adv = NULL, *n;
4184 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4189 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
4195 adv = hci_find_adv_instance(hdev, cp->handle);
4198 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
4201 adv->enabled = true;
4203 /* If just one instance was disabled check if there are
4204 * any other instance enabled before clearing HCI_LE_PER_ADV.
4205 * The current periodic adv instance will be marked as
4206 * disabled once extended advertising is also disabled.
4208 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
4210 if (adv->periodic && adv->enabled)
4214 if (per_adv_cnt > 1)
4217 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
4221 hci_dev_unlock(hdev);
4226 #define HCI_CC_VL(_op, _func, _min, _max) \
4234 #define HCI_CC(_op, _func, _len) \
4235 HCI_CC_VL(_op, _func, _len, _len)
4237 #define HCI_CC_STATUS(_op, _func) \
4238 HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4240 static const struct hci_cc {
4242 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4245 } hci_cc_table[] = {
4246 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4247 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4248 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4249 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4250 hci_cc_remote_name_req_cancel),
4251 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4252 sizeof(struct hci_rp_role_discovery)),
4253 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4254 sizeof(struct hci_rp_read_link_policy)),
4255 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4256 sizeof(struct hci_rp_write_link_policy)),
4257 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4258 sizeof(struct hci_rp_read_def_link_policy)),
4259 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4260 hci_cc_write_def_link_policy),
4261 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4262 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4263 sizeof(struct hci_rp_read_stored_link_key)),
4264 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4265 sizeof(struct hci_rp_delete_stored_link_key)),
4266 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4267 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4268 sizeof(struct hci_rp_read_local_name)),
4269 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4270 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4271 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4272 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4273 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4274 sizeof(struct hci_rp_read_class_of_dev)),
4275 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4276 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4277 sizeof(struct hci_rp_read_voice_setting)),
4278 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4279 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4280 sizeof(struct hci_rp_read_num_supported_iac)),
4281 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4282 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4283 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4284 sizeof(struct hci_rp_read_auth_payload_to)),
4285 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4286 sizeof(struct hci_rp_write_auth_payload_to)),
4287 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4288 sizeof(struct hci_rp_read_local_version)),
4289 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4290 sizeof(struct hci_rp_read_local_commands)),
4291 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4292 sizeof(struct hci_rp_read_local_features)),
4293 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4294 sizeof(struct hci_rp_read_local_ext_features)),
4295 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4296 sizeof(struct hci_rp_read_buffer_size)),
4297 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4298 sizeof(struct hci_rp_read_bd_addr)),
4299 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4300 sizeof(struct hci_rp_read_local_pairing_opts)),
4301 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4302 sizeof(struct hci_rp_read_page_scan_activity)),
4303 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4304 hci_cc_write_page_scan_activity),
4305 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4306 sizeof(struct hci_rp_read_page_scan_type)),
4307 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4308 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4309 sizeof(struct hci_rp_read_data_block_size)),
4310 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4311 sizeof(struct hci_rp_read_flow_control_mode)),
4312 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4313 sizeof(struct hci_rp_read_local_amp_info)),
4314 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4315 sizeof(struct hci_rp_read_clock)),
4316 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4317 sizeof(struct hci_rp_read_enc_key_size)),
4318 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4319 sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4320 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4321 hci_cc_read_def_err_data_reporting,
4322 sizeof(struct hci_rp_read_def_err_data_reporting)),
4323 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4324 hci_cc_write_def_err_data_reporting),
4325 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4326 sizeof(struct hci_rp_pin_code_reply)),
4327 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4328 sizeof(struct hci_rp_pin_code_neg_reply)),
4329 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4330 sizeof(struct hci_rp_read_local_oob_data)),
4331 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4332 sizeof(struct hci_rp_read_local_oob_ext_data)),
4333 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4334 sizeof(struct hci_rp_le_read_buffer_size)),
4335 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4336 sizeof(struct hci_rp_le_read_local_features)),
4337 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4338 sizeof(struct hci_rp_le_read_adv_tx_power)),
4339 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4340 sizeof(struct hci_rp_user_confirm_reply)),
4341 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4342 sizeof(struct hci_rp_user_confirm_reply)),
4343 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4344 sizeof(struct hci_rp_user_confirm_reply)),
4345 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4346 sizeof(struct hci_rp_user_confirm_reply)),
4347 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4348 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4349 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4350 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4351 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4352 hci_cc_le_read_accept_list_size,
4353 sizeof(struct hci_rp_le_read_accept_list_size)),
4354 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4355 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4356 hci_cc_le_add_to_accept_list),
4357 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4358 hci_cc_le_del_from_accept_list),
4359 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4360 sizeof(struct hci_rp_le_read_supported_states)),
4361 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4362 sizeof(struct hci_rp_le_read_def_data_len)),
4363 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4364 hci_cc_le_write_def_data_len),
4365 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4366 hci_cc_le_add_to_resolv_list),
4367 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4368 hci_cc_le_del_from_resolv_list),
4369 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4370 hci_cc_le_clear_resolv_list),
4371 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4372 sizeof(struct hci_rp_le_read_resolv_list_size)),
4373 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4374 hci_cc_le_set_addr_resolution_enable),
4375 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4376 sizeof(struct hci_rp_le_read_max_data_len)),
4377 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4378 hci_cc_write_le_host_supported),
4379 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4380 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4381 sizeof(struct hci_rp_read_rssi)),
4382 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4383 sizeof(struct hci_rp_read_tx_power)),
4384 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4385 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4386 hci_cc_le_set_ext_scan_param),
4387 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4388 hci_cc_le_set_ext_scan_enable),
4389 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4390 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4391 hci_cc_le_read_num_adv_sets,
4392 sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4393 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4394 sizeof(struct hci_rp_le_set_ext_adv_params)),
4395 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4396 hci_cc_le_set_ext_adv_enable),
4397 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4398 hci_cc_le_set_adv_set_random_addr),
4399 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4400 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4401 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4402 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4403 hci_cc_le_set_per_adv_enable),
4404 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4405 sizeof(struct hci_rp_le_read_transmit_power)),
4407 HCI_CC(HCI_OP_ENABLE_RSSI, hci_cc_enable_rssi,
4408 sizeof(struct hci_cc_rsp_enable_rssi)),
4409 HCI_CC(HCI_OP_GET_RAW_RSSI, hci_cc_get_raw_rssi,
4410 sizeof(struct hci_cc_rp_get_raw_rssi)),
4412 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4413 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4414 sizeof(struct hci_rp_le_read_buffer_size_v2)),
4415 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4416 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4417 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4418 sizeof(struct hci_rp_le_setup_iso_path)),
4421 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4422 struct sk_buff *skb)
4426 if (skb->len < cc->min_len) {
4427 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4428 cc->op, skb->len, cc->min_len);
4429 return HCI_ERROR_UNSPECIFIED;
4432 /* Just warn if the length is over max_len size it still be possible to
4433 * partially parse the cc so leave to callback to decide if that is
4436 if (skb->len > cc->max_len)
4437 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4438 cc->op, skb->len, cc->max_len);
4440 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4442 return HCI_ERROR_UNSPECIFIED;
4444 return cc->func(hdev, data, skb);
4447 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4448 struct sk_buff *skb, u16 *opcode, u8 *status,
4449 hci_req_complete_t *req_complete,
4450 hci_req_complete_skb_t *req_complete_skb)
4452 struct hci_ev_cmd_complete *ev = data;
4455 *opcode = __le16_to_cpu(ev->opcode);
4457 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4459 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4460 if (hci_cc_table[i].op == *opcode) {
4461 *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4466 if (i == ARRAY_SIZE(hci_cc_table)) {
4467 /* Unknown opcode, assume byte 0 contains the status, so
4468 * that e.g. __hci_cmd_sync() properly returns errors
4469 * for vendor specific commands send by HCI drivers.
4470 * If a vendor doesn't actually follow this convention we may
4471 * need to introduce a vendor CC table in order to properly set
4474 *status = skb->data[0];
4477 handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4479 hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4482 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4484 "unexpected event for opcode 0x%4.4x", *opcode);
4488 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4489 queue_work(hdev->workqueue, &hdev->cmd_work);
4492 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4494 struct hci_cp_le_create_cis *cp;
4495 bool pending = false;
4498 bt_dev_dbg(hdev, "status 0x%2.2x", status);
4503 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4509 /* Remove connection if command failed */
4510 for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4511 struct hci_conn *conn;
4514 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4516 conn = hci_conn_hash_lookup_handle(hdev, handle);
4518 if (test_and_clear_bit(HCI_CONN_CREATE_CIS,
4521 conn->state = BT_CLOSED;
4522 hci_connect_cfm(conn, status);
4528 hci_le_create_cis_pending(hdev);
4530 hci_dev_unlock(hdev);
4533 #define HCI_CS(_op, _func) \
4539 static const struct hci_cs {
4541 void (*func)(struct hci_dev *hdev, __u8 status);
4542 } hci_cs_table[] = {
4543 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4544 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4545 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4546 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4547 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4548 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4549 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4550 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4551 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4552 hci_cs_read_remote_ext_features),
4553 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4554 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4555 hci_cs_enhanced_setup_sync_conn),
4556 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4557 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4558 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4559 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4560 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4561 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4562 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4563 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4564 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4567 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4568 struct sk_buff *skb, u16 *opcode, u8 *status,
4569 hci_req_complete_t *req_complete,
4570 hci_req_complete_skb_t *req_complete_skb)
4572 struct hci_ev_cmd_status *ev = data;
4575 *opcode = __le16_to_cpu(ev->opcode);
4576 *status = ev->status;
4578 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4580 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4581 if (hci_cs_table[i].op == *opcode) {
4582 hci_cs_table[i].func(hdev, ev->status);
4587 handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4589 /* Indicate request completion if the command failed. Also, if
4590 * we're not waiting for a special event and we get a success
4591 * command status we should try to flag the request as completed
4592 * (since for this kind of commands there will not be a command
4595 if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4596 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4598 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4599 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4605 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4606 queue_work(hdev->workqueue, &hdev->cmd_work);
4609 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4610 struct sk_buff *skb)
4612 struct hci_ev_hardware_error *ev = data;
4614 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4618 mgmt_hardware_error(hdev, ev->code);
4619 hci_dev_unlock(hdev);
4621 hdev->hw_error_code = ev->code;
4623 queue_work(hdev->req_workqueue, &hdev->error_reset);
4626 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4627 struct sk_buff *skb)
4629 struct hci_ev_role_change *ev = data;
4630 struct hci_conn *conn;
4632 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4636 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4639 conn->role = ev->role;
4641 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4643 hci_role_switch_cfm(conn, ev->status, ev->role);
4645 if (!ev->status && (get_link_mode(conn) & HCI_LM_MASTER))
4646 hci_conn_change_supervision_timeout(conn,
4647 LINK_SUPERVISION_TIMEOUT);
4651 hci_dev_unlock(hdev);
4654 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4655 struct sk_buff *skb)
4657 struct hci_ev_num_comp_pkts *ev = data;
4660 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4661 flex_array_size(ev, handles, ev->num)))
4664 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4665 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4669 bt_dev_dbg(hdev, "num %d", ev->num);
4671 for (i = 0; i < ev->num; i++) {
4672 struct hci_comp_pkts_info *info = &ev->handles[i];
4673 struct hci_conn *conn;
4674 __u16 handle, count;
4676 handle = __le16_to_cpu(info->handle);
4677 count = __le16_to_cpu(info->count);
4679 conn = hci_conn_hash_lookup_handle(hdev, handle);
4683 conn->sent -= count;
4685 switch (conn->type) {
4687 hdev->acl_cnt += count;
4688 if (hdev->acl_cnt > hdev->acl_pkts)
4689 hdev->acl_cnt = hdev->acl_pkts;
4693 if (hdev->le_pkts) {
4694 hdev->le_cnt += count;
4695 if (hdev->le_cnt > hdev->le_pkts)
4696 hdev->le_cnt = hdev->le_pkts;
4698 hdev->acl_cnt += count;
4699 if (hdev->acl_cnt > hdev->acl_pkts)
4700 hdev->acl_cnt = hdev->acl_pkts;
4705 hdev->sco_cnt += count;
4706 if (hdev->sco_cnt > hdev->sco_pkts)
4707 hdev->sco_cnt = hdev->sco_pkts;
4711 if (hdev->iso_pkts) {
4712 hdev->iso_cnt += count;
4713 if (hdev->iso_cnt > hdev->iso_pkts)
4714 hdev->iso_cnt = hdev->iso_pkts;
4715 } else if (hdev->le_pkts) {
4716 hdev->le_cnt += count;
4717 if (hdev->le_cnt > hdev->le_pkts)
4718 hdev->le_cnt = hdev->le_pkts;
4720 hdev->acl_cnt += count;
4721 if (hdev->acl_cnt > hdev->acl_pkts)
4722 hdev->acl_cnt = hdev->acl_pkts;
4727 bt_dev_err(hdev, "unknown type %d conn %p",
4733 queue_work(hdev->workqueue, &hdev->tx_work);
4736 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4739 struct hci_chan *chan;
4741 switch (hdev->dev_type) {
4743 return hci_conn_hash_lookup_handle(hdev, handle);
4745 chan = hci_chan_lookup_handle(hdev, handle);
4750 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4757 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4758 struct sk_buff *skb)
4760 struct hci_ev_num_comp_blocks *ev = data;
4763 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4764 flex_array_size(ev, handles, ev->num_hndl)))
4767 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4768 bt_dev_err(hdev, "wrong event for mode %d",
4769 hdev->flow_ctl_mode);
4773 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4776 for (i = 0; i < ev->num_hndl; i++) {
4777 struct hci_comp_blocks_info *info = &ev->handles[i];
4778 struct hci_conn *conn = NULL;
4779 __u16 handle, block_count;
4781 handle = __le16_to_cpu(info->handle);
4782 block_count = __le16_to_cpu(info->blocks);
4784 conn = __hci_conn_lookup_handle(hdev, handle);
4788 conn->sent -= block_count;
4790 switch (conn->type) {
4793 hdev->block_cnt += block_count;
4794 if (hdev->block_cnt > hdev->num_blocks)
4795 hdev->block_cnt = hdev->num_blocks;
4799 bt_dev_err(hdev, "unknown type %d conn %p",
4805 queue_work(hdev->workqueue, &hdev->tx_work);
4808 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4809 struct sk_buff *skb)
4811 struct hci_ev_mode_change *ev = data;
4812 struct hci_conn *conn;
4814 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4818 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4820 conn->mode = ev->mode;
4822 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4824 if (conn->mode == HCI_CM_ACTIVE)
4825 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4827 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4830 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4831 hci_sco_setup(conn, ev->status);
4834 hci_dev_unlock(hdev);
4837 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4838 struct sk_buff *skb)
4840 struct hci_ev_pin_code_req *ev = data;
4841 struct hci_conn *conn;
4843 bt_dev_dbg(hdev, "");
4847 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4851 if (conn->state == BT_CONNECTED) {
4852 hci_conn_hold(conn);
4853 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4854 hci_conn_drop(conn);
4857 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4858 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4859 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4860 sizeof(ev->bdaddr), &ev->bdaddr);
4861 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4864 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4869 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4873 hci_dev_unlock(hdev);
4876 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4878 if (key_type == HCI_LK_CHANGED_COMBINATION)
4881 conn->pin_length = pin_len;
4882 conn->key_type = key_type;
4885 case HCI_LK_LOCAL_UNIT:
4886 case HCI_LK_REMOTE_UNIT:
4887 case HCI_LK_DEBUG_COMBINATION:
4889 case HCI_LK_COMBINATION:
4891 conn->pending_sec_level = BT_SECURITY_HIGH;
4893 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4895 case HCI_LK_UNAUTH_COMBINATION_P192:
4896 case HCI_LK_UNAUTH_COMBINATION_P256:
4897 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4899 case HCI_LK_AUTH_COMBINATION_P192:
4900 conn->pending_sec_level = BT_SECURITY_HIGH;
4902 case HCI_LK_AUTH_COMBINATION_P256:
4903 conn->pending_sec_level = BT_SECURITY_FIPS;
4908 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4909 struct sk_buff *skb)
4911 struct hci_ev_link_key_req *ev = data;
4912 struct hci_cp_link_key_reply cp;
4913 struct hci_conn *conn;
4914 struct link_key *key;
4916 bt_dev_dbg(hdev, "");
4918 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4923 key = hci_find_link_key(hdev, &ev->bdaddr);
4925 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4929 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4931 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4933 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4935 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4936 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4937 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4938 bt_dev_dbg(hdev, "ignoring unauthenticated key");
4942 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4943 (conn->pending_sec_level == BT_SECURITY_HIGH ||
4944 conn->pending_sec_level == BT_SECURITY_FIPS)) {
4945 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4949 conn_set_key(conn, key->type, key->pin_len);
4952 bacpy(&cp.bdaddr, &ev->bdaddr);
4953 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4955 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4957 hci_dev_unlock(hdev);
4962 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4963 hci_dev_unlock(hdev);
4966 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4967 struct sk_buff *skb)
4969 struct hci_ev_link_key_notify *ev = data;
4970 struct hci_conn *conn;
4971 struct link_key *key;
4975 bt_dev_dbg(hdev, "");
4979 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4983 /* Ignore NULL link key against CVE-2020-26555 */
4984 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) {
4985 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR",
4987 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
4988 hci_conn_drop(conn);
4992 hci_conn_hold(conn);
4993 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4994 hci_conn_drop(conn);
4996 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4997 conn_set_key(conn, ev->key_type, conn->pin_length);
4999 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5002 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
5003 ev->key_type, pin_len, &persistent);
5007 /* Update connection information since adding the key will have
5008 * fixed up the type in the case of changed combination keys.
5010 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
5011 conn_set_key(conn, key->type, key->pin_len);
5013 mgmt_new_link_key(hdev, key, persistent);
5015 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
5016 * is set. If it's not set simply remove the key from the kernel
5017 * list (we've still notified user space about it but with
5018 * store_hint being 0).
5020 if (key->type == HCI_LK_DEBUG_COMBINATION &&
5021 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
5022 list_del_rcu(&key->list);
5023 kfree_rcu(key, rcu);
5028 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
5030 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
5033 hci_dev_unlock(hdev);
5036 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
5037 struct sk_buff *skb)
5039 struct hci_ev_clock_offset *ev = data;
5040 struct hci_conn *conn;
5042 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5046 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5047 if (conn && !ev->status) {
5048 struct inquiry_entry *ie;
5050 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
5052 ie->data.clock_offset = ev->clock_offset;
5053 ie->timestamp = jiffies;
5057 hci_dev_unlock(hdev);
5060 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
5061 struct sk_buff *skb)
5063 struct hci_ev_pkt_type_change *ev = data;
5064 struct hci_conn *conn;
5066 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5070 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5071 if (conn && !ev->status)
5072 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
5074 hci_dev_unlock(hdev);
5077 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
5078 struct sk_buff *skb)
5080 struct hci_ev_pscan_rep_mode *ev = data;
5081 struct inquiry_entry *ie;
5083 bt_dev_dbg(hdev, "");
5087 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5089 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
5090 ie->timestamp = jiffies;
5093 hci_dev_unlock(hdev);
5096 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
5097 struct sk_buff *skb)
5099 struct hci_ev_inquiry_result_rssi *ev = edata;
5100 struct inquiry_data data;
5103 bt_dev_dbg(hdev, "num_rsp %d", ev->num);
5108 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5113 if (skb->len == array_size(ev->num,
5114 sizeof(struct inquiry_info_rssi_pscan))) {
5115 struct inquiry_info_rssi_pscan *info;
5117 for (i = 0; i < ev->num; i++) {
5120 info = hci_ev_skb_pull(hdev, skb,
5121 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
5124 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5125 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5129 bacpy(&data.bdaddr, &info->bdaddr);
5130 data.pscan_rep_mode = info->pscan_rep_mode;
5131 data.pscan_period_mode = info->pscan_period_mode;
5132 data.pscan_mode = info->pscan_mode;
5133 memcpy(data.dev_class, info->dev_class, 3);
5134 data.clock_offset = info->clock_offset;
5135 data.rssi = info->rssi;
5136 data.ssp_mode = 0x00;
5138 flags = hci_inquiry_cache_update(hdev, &data, false);
5140 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5141 info->dev_class, info->rssi,
5142 flags, NULL, 0, NULL, 0, 0);
5144 } else if (skb->len == array_size(ev->num,
5145 sizeof(struct inquiry_info_rssi))) {
5146 struct inquiry_info_rssi *info;
5148 for (i = 0; i < ev->num; i++) {
5151 info = hci_ev_skb_pull(hdev, skb,
5152 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
5155 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5156 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5160 bacpy(&data.bdaddr, &info->bdaddr);
5161 data.pscan_rep_mode = info->pscan_rep_mode;
5162 data.pscan_period_mode = info->pscan_period_mode;
5163 data.pscan_mode = 0x00;
5164 memcpy(data.dev_class, info->dev_class, 3);
5165 data.clock_offset = info->clock_offset;
5166 data.rssi = info->rssi;
5167 data.ssp_mode = 0x00;
5169 flags = hci_inquiry_cache_update(hdev, &data, false);
5171 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5172 info->dev_class, info->rssi,
5173 flags, NULL, 0, NULL, 0, 0);
5176 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5177 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5180 hci_dev_unlock(hdev);
5183 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
5184 struct sk_buff *skb)
5186 struct hci_ev_remote_ext_features *ev = data;
5187 struct hci_conn *conn;
5189 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5193 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5197 if (ev->page < HCI_MAX_PAGES)
5198 memcpy(conn->features[ev->page], ev->features, 8);
5200 if (!ev->status && ev->page == 0x01) {
5201 struct inquiry_entry *ie;
5203 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
5205 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5207 if (ev->features[0] & LMP_HOST_SSP) {
5208 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5210 /* It is mandatory by the Bluetooth specification that
5211 * Extended Inquiry Results are only used when Secure
5212 * Simple Pairing is enabled, but some devices violate
5215 * To make these devices work, the internal SSP
5216 * enabled flag needs to be cleared if the remote host
5217 * features do not indicate SSP support */
5218 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5221 if (ev->features[0] & LMP_HOST_SC)
5222 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
5225 if (conn->state != BT_CONFIG)
5228 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
5229 struct hci_cp_remote_name_req cp;
5230 memset(&cp, 0, sizeof(cp));
5231 bacpy(&cp.bdaddr, &conn->dst);
5232 cp.pscan_rep_mode = 0x02;
5233 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
5234 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5235 mgmt_device_connected(hdev, conn, NULL, 0);
5237 if (!hci_outgoing_auth_needed(hdev, conn)) {
5238 conn->state = BT_CONNECTED;
5239 hci_connect_cfm(conn, ev->status);
5240 hci_conn_drop(conn);
5244 hci_dev_unlock(hdev);
5247 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5248 struct sk_buff *skb)
5250 struct hci_ev_sync_conn_complete *ev = data;
5251 struct hci_conn *conn;
5252 u8 status = ev->status;
5254 switch (ev->link_type) {
5259 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5260 * for HCI_Synchronous_Connection_Complete is limited to
5261 * either SCO or eSCO
5263 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5267 bt_dev_dbg(hdev, "status 0x%2.2x", status);
5271 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5273 if (ev->link_type == ESCO_LINK)
5276 /* When the link type in the event indicates SCO connection
5277 * and lookup of the connection object fails, then check
5278 * if an eSCO connection object exists.
5280 * The core limits the synchronous connections to either
5281 * SCO or eSCO. The eSCO connection is preferred and tried
5282 * to be setup first and until successfully established,
5283 * the link type will be hinted as eSCO.
5285 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5290 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5291 * Processing it more than once per connection can corrupt kernel memory.
5293 * As the connection handle is set here for the first time, it indicates
5294 * whether the connection is already set up.
5296 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5297 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5303 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
5305 conn->state = BT_CLOSED;
5309 conn->state = BT_CONNECTED;
5310 conn->type = ev->link_type;
5312 hci_debugfs_create_conn(conn);
5313 hci_conn_add_sysfs(conn);
5316 case 0x10: /* Connection Accept Timeout */
5317 case 0x0d: /* Connection Rejected due to Limited Resources */
5318 case 0x11: /* Unsupported Feature or Parameter Value */
5319 case 0x1c: /* SCO interval rejected */
5320 case 0x1a: /* Unsupported Remote Feature */
5321 case 0x1e: /* Invalid LMP Parameters */
5322 case 0x1f: /* Unspecified error */
5323 case 0x20: /* Unsupported LMP Parameter value */
5325 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5326 (hdev->esco_type & EDR_ESCO_MASK);
5327 if (hci_setup_sync(conn, conn->parent->handle))
5333 conn->state = BT_CLOSED;
5337 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5338 /* Notify only in case of SCO over HCI transport data path which
5339 * is zero and non-zero value shall be non-HCI transport data path
5341 if (conn->codec.data_path == 0 && hdev->notify) {
5342 switch (ev->air_mode) {
5344 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5347 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5352 hci_connect_cfm(conn, status);
5357 hci_dev_unlock(hdev);
5360 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5364 while (parsed < eir_len) {
5365 u8 field_len = eir[0];
5370 parsed += field_len + 1;
5371 eir += field_len + 1;
5377 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5378 struct sk_buff *skb)
5380 struct hci_ev_ext_inquiry_result *ev = edata;
5381 struct inquiry_data data;
5385 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5386 flex_array_size(ev, info, ev->num)))
5389 bt_dev_dbg(hdev, "num %d", ev->num);
5394 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5399 for (i = 0; i < ev->num; i++) {
5400 struct extended_inquiry_info *info = &ev->info[i];
5404 bacpy(&data.bdaddr, &info->bdaddr);
5405 data.pscan_rep_mode = info->pscan_rep_mode;
5406 data.pscan_period_mode = info->pscan_period_mode;
5407 data.pscan_mode = 0x00;
5408 memcpy(data.dev_class, info->dev_class, 3);
5409 data.clock_offset = info->clock_offset;
5410 data.rssi = info->rssi;
5411 data.ssp_mode = 0x01;
5413 if (hci_dev_test_flag(hdev, HCI_MGMT))
5414 name_known = eir_get_data(info->data,
5416 EIR_NAME_COMPLETE, NULL);
5420 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5422 eir_len = eir_get_length(info->data, sizeof(info->data));
5424 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5425 info->dev_class, info->rssi,
5426 flags, info->data, eir_len, NULL, 0, 0);
5429 hci_dev_unlock(hdev);
5432 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5433 struct sk_buff *skb)
5435 struct hci_ev_key_refresh_complete *ev = data;
5436 struct hci_conn *conn;
5438 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5439 __le16_to_cpu(ev->handle));
5443 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5447 /* For BR/EDR the necessary steps are taken through the
5448 * auth_complete event.
5450 if (conn->type != LE_LINK)
5454 conn->sec_level = conn->pending_sec_level;
5456 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5458 if (ev->status && conn->state == BT_CONNECTED) {
5459 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5460 hci_conn_drop(conn);
5464 if (conn->state == BT_CONFIG) {
5466 conn->state = BT_CONNECTED;
5468 hci_connect_cfm(conn, ev->status);
5469 hci_conn_drop(conn);
5471 hci_auth_cfm(conn, ev->status);
5473 hci_conn_hold(conn);
5474 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5475 hci_conn_drop(conn);
5479 hci_dev_unlock(hdev);
5482 static u8 hci_get_auth_req(struct hci_conn *conn)
5485 if (conn->remote_auth == HCI_AT_GENERAL_BONDING_MITM) {
5486 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5487 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5488 return HCI_AT_GENERAL_BONDING_MITM;
5492 /* If remote requests no-bonding follow that lead */
5493 if (conn->remote_auth == HCI_AT_NO_BONDING ||
5494 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5495 return conn->remote_auth | (conn->auth_type & 0x01);
5497 /* If both remote and local have enough IO capabilities, require
5500 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5501 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5502 return conn->remote_auth | 0x01;
5504 /* No MITM protection possible so ignore remote requirement */
5505 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5508 static u8 bredr_oob_data_present(struct hci_conn *conn)
5510 struct hci_dev *hdev = conn->hdev;
5511 struct oob_data *data;
5513 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5517 if (bredr_sc_enabled(hdev)) {
5518 /* When Secure Connections is enabled, then just
5519 * return the present value stored with the OOB
5520 * data. The stored value contains the right present
5521 * information. However it can only be trusted when
5522 * not in Secure Connection Only mode.
5524 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5525 return data->present;
5527 /* When Secure Connections Only mode is enabled, then
5528 * the P-256 values are required. If they are not
5529 * available, then do not declare that OOB data is
5532 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) ||
5533 !crypto_memneq(data->hash256, ZERO_KEY, 16))
5539 /* When Secure Connections is not enabled or actually
5540 * not supported by the hardware, then check that if
5541 * P-192 data values are present.
5543 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) ||
5544 !crypto_memneq(data->hash192, ZERO_KEY, 16))
5550 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5551 struct sk_buff *skb)
5553 struct hci_ev_io_capa_request *ev = data;
5554 struct hci_conn *conn;
5556 bt_dev_dbg(hdev, "");
5560 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5561 if (!conn || !hci_conn_ssp_enabled(conn))
5564 hci_conn_hold(conn);
5566 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5569 /* Allow pairing if we're pairable, the initiators of the
5570 * pairing or if the remote is not requesting bonding.
5572 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5573 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5574 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5575 struct hci_cp_io_capability_reply cp;
5577 bacpy(&cp.bdaddr, &ev->bdaddr);
5578 /* Change the IO capability from KeyboardDisplay
5579 * to DisplayYesNo as it is not supported by BT spec. */
5580 cp.capability = (conn->io_capability == 0x04) ?
5581 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5583 /* If we are initiators, there is no remote information yet */
5584 if (conn->remote_auth == 0xff) {
5585 /* Request MITM protection if our IO caps allow it
5586 * except for the no-bonding case.
5588 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5589 conn->auth_type != HCI_AT_NO_BONDING)
5590 conn->auth_type |= 0x01;
5592 conn->auth_type = hci_get_auth_req(conn);
5595 /* If we're not bondable, force one of the non-bondable
5596 * authentication requirement values.
5598 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5599 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5601 cp.authentication = conn->auth_type;
5602 cp.oob_data = bredr_oob_data_present(conn);
5604 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5607 struct hci_cp_io_capability_neg_reply cp;
5609 bacpy(&cp.bdaddr, &ev->bdaddr);
5610 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5612 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5617 hci_dev_unlock(hdev);
5620 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5621 struct sk_buff *skb)
5623 struct hci_ev_io_capa_reply *ev = data;
5624 struct hci_conn *conn;
5626 bt_dev_dbg(hdev, "");
5630 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5634 conn->remote_cap = ev->capability;
5635 conn->remote_auth = ev->authentication;
5638 hci_dev_unlock(hdev);
5641 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5642 struct sk_buff *skb)
5644 struct hci_ev_user_confirm_req *ev = data;
5645 int loc_mitm, rem_mitm, confirm_hint = 0;
5646 struct hci_conn *conn;
5648 bt_dev_dbg(hdev, "");
5652 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5655 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5659 loc_mitm = (conn->auth_type & 0x01);
5660 rem_mitm = (conn->remote_auth & 0x01);
5662 /* If we require MITM but the remote device can't provide that
5663 * (it has NoInputNoOutput) then reject the confirmation
5664 * request. We check the security level here since it doesn't
5665 * necessarily match conn->auth_type.
5667 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5668 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5669 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5670 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5671 sizeof(ev->bdaddr), &ev->bdaddr);
5675 /* If no side requires MITM protection; auto-accept */
5676 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5677 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5679 /* If we're not the initiators request authorization to
5680 * proceed from user space (mgmt_user_confirm with
5681 * confirm_hint set to 1). The exception is if neither
5682 * side had MITM or if the local IO capability is
5683 * NoInputNoOutput, in which case we do auto-accept
5685 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5686 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5687 (loc_mitm || rem_mitm)) {
5688 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5693 /* If there already exists link key in local host, leave the
5694 * decision to user space since the remote device could be
5695 * legitimate or malicious.
5697 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5698 bt_dev_dbg(hdev, "Local host already has link key");
5703 BT_DBG("Auto-accept of user confirmation with %ums delay",
5704 hdev->auto_accept_delay);
5706 if (hdev->auto_accept_delay > 0) {
5707 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5708 queue_delayed_work(conn->hdev->workqueue,
5709 &conn->auto_accept_work, delay);
5713 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5714 sizeof(ev->bdaddr), &ev->bdaddr);
5719 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5720 le32_to_cpu(ev->passkey), confirm_hint);
5723 hci_dev_unlock(hdev);
5726 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5727 struct sk_buff *skb)
5729 struct hci_ev_user_passkey_req *ev = data;
5731 bt_dev_dbg(hdev, "");
5733 if (hci_dev_test_flag(hdev, HCI_MGMT))
5734 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5737 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5738 struct sk_buff *skb)
5740 struct hci_ev_user_passkey_notify *ev = data;
5741 struct hci_conn *conn;
5743 bt_dev_dbg(hdev, "");
5745 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5749 conn->passkey_notify = __le32_to_cpu(ev->passkey);
5750 conn->passkey_entered = 0;
5752 if (hci_dev_test_flag(hdev, HCI_MGMT))
5753 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5754 conn->dst_type, conn->passkey_notify,
5755 conn->passkey_entered);
5758 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5759 struct sk_buff *skb)
5761 struct hci_ev_keypress_notify *ev = data;
5762 struct hci_conn *conn;
5764 bt_dev_dbg(hdev, "");
5766 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5771 case HCI_KEYPRESS_STARTED:
5772 conn->passkey_entered = 0;
5775 case HCI_KEYPRESS_ENTERED:
5776 conn->passkey_entered++;
5779 case HCI_KEYPRESS_ERASED:
5780 conn->passkey_entered--;
5783 case HCI_KEYPRESS_CLEARED:
5784 conn->passkey_entered = 0;
5787 case HCI_KEYPRESS_COMPLETED:
5791 if (hci_dev_test_flag(hdev, HCI_MGMT))
5792 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5793 conn->dst_type, conn->passkey_notify,
5794 conn->passkey_entered);
5797 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5798 struct sk_buff *skb)
5800 struct hci_ev_simple_pair_complete *ev = data;
5801 struct hci_conn *conn;
5803 bt_dev_dbg(hdev, "");
5807 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5808 if (!conn || !hci_conn_ssp_enabled(conn))
5811 /* Reset the authentication requirement to unknown */
5812 conn->remote_auth = 0xff;
5814 /* To avoid duplicate auth_failed events to user space we check
5815 * the HCI_CONN_AUTH_PEND flag which will be set if we
5816 * initiated the authentication. A traditional auth_complete
5817 * event gets always produced as initiator and is also mapped to
5818 * the mgmt_auth_failed event */
5819 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5820 mgmt_auth_failed(conn, ev->status);
5822 hci_conn_drop(conn);
5825 hci_dev_unlock(hdev);
5828 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5829 struct sk_buff *skb)
5831 struct hci_ev_remote_host_features *ev = data;
5832 struct inquiry_entry *ie;
5833 struct hci_conn *conn;
5835 bt_dev_dbg(hdev, "");
5839 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5841 memcpy(conn->features[1], ev->features, 8);
5843 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5845 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5847 hci_dev_unlock(hdev);
5850 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5851 struct sk_buff *skb)
5853 struct hci_ev_remote_oob_data_request *ev = edata;
5854 struct oob_data *data;
5856 bt_dev_dbg(hdev, "");
5860 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5863 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5865 struct hci_cp_remote_oob_data_neg_reply cp;
5867 bacpy(&cp.bdaddr, &ev->bdaddr);
5868 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5873 if (bredr_sc_enabled(hdev)) {
5874 struct hci_cp_remote_oob_ext_data_reply cp;
5876 bacpy(&cp.bdaddr, &ev->bdaddr);
5877 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5878 memset(cp.hash192, 0, sizeof(cp.hash192));
5879 memset(cp.rand192, 0, sizeof(cp.rand192));
5881 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5882 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5884 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5885 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5887 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5890 struct hci_cp_remote_oob_data_reply cp;
5892 bacpy(&cp.bdaddr, &ev->bdaddr);
5893 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5894 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5896 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5901 hci_dev_unlock(hdev);
5904 #if IS_ENABLED(CONFIG_BT_HS)
5905 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5906 struct sk_buff *skb)
5908 struct hci_ev_channel_selected *ev = data;
5909 struct hci_conn *hcon;
5911 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5913 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5917 amp_read_loc_assoc_final_data(hdev, hcon);
5920 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5921 struct sk_buff *skb)
5923 struct hci_ev_phy_link_complete *ev = data;
5924 struct hci_conn *hcon, *bredr_hcon;
5926 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5931 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5943 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5945 hcon->state = BT_CONNECTED;
5946 bacpy(&hcon->dst, &bredr_hcon->dst);
5948 hci_conn_hold(hcon);
5949 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5950 hci_conn_drop(hcon);
5952 hci_debugfs_create_conn(hcon);
5953 hci_conn_add_sysfs(hcon);
5955 amp_physical_cfm(bredr_hcon, hcon);
5958 hci_dev_unlock(hdev);
5961 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5962 struct sk_buff *skb)
5964 struct hci_ev_logical_link_complete *ev = data;
5965 struct hci_conn *hcon;
5966 struct hci_chan *hchan;
5967 struct amp_mgr *mgr;
5969 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5970 le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5972 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5976 /* Create AMP hchan */
5977 hchan = hci_chan_create(hcon);
5981 hchan->handle = le16_to_cpu(ev->handle);
5984 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5986 mgr = hcon->amp_mgr;
5987 if (mgr && mgr->bredr_chan) {
5988 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5990 l2cap_chan_lock(bredr_chan);
5992 bredr_chan->conn->mtu = hdev->block_mtu;
5993 l2cap_logical_cfm(bredr_chan, hchan, 0);
5994 hci_conn_hold(hcon);
5996 l2cap_chan_unlock(bredr_chan);
6000 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
6001 struct sk_buff *skb)
6003 struct hci_ev_disconn_logical_link_complete *ev = data;
6004 struct hci_chan *hchan;
6006 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
6007 le16_to_cpu(ev->handle), ev->status);
6014 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
6015 if (!hchan || !hchan->amp)
6018 amp_destroy_logical_link(hchan, ev->reason);
6021 hci_dev_unlock(hdev);
6024 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
6025 struct sk_buff *skb)
6027 struct hci_ev_disconn_phy_link_complete *ev = data;
6028 struct hci_conn *hcon;
6030 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6037 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
6038 if (hcon && hcon->type == AMP_LINK) {
6039 hcon->state = BT_CLOSED;
6040 hci_disconn_cfm(hcon, ev->reason);
6044 hci_dev_unlock(hdev);
6048 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
6049 u8 bdaddr_type, bdaddr_t *local_rpa)
6052 conn->dst_type = bdaddr_type;
6053 conn->resp_addr_type = bdaddr_type;
6054 bacpy(&conn->resp_addr, bdaddr);
6056 /* Check if the controller has set a Local RPA then it must be
6057 * used instead or hdev->rpa.
6059 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
6060 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
6061 bacpy(&conn->init_addr, local_rpa);
6062 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
6063 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
6064 bacpy(&conn->init_addr, &conn->hdev->rpa);
6066 hci_copy_identity_address(conn->hdev, &conn->init_addr,
6067 &conn->init_addr_type);
6070 conn->resp_addr_type = conn->hdev->adv_addr_type;
6071 /* Check if the controller has set a Local RPA then it must be
6072 * used instead or hdev->rpa.
6074 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
6075 conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
6076 bacpy(&conn->resp_addr, local_rpa);
6077 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
6078 /* In case of ext adv, resp_addr will be updated in
6079 * Adv Terminated event.
6081 if (!ext_adv_capable(conn->hdev))
6082 bacpy(&conn->resp_addr,
6083 &conn->hdev->random_addr);
6085 bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
6088 conn->init_addr_type = bdaddr_type;
6089 bacpy(&conn->init_addr, bdaddr);
6091 /* For incoming connections, set the default minimum
6092 * and maximum connection interval. They will be used
6093 * to check if the parameters are in range and if not
6094 * trigger the connection update procedure.
6096 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
6097 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
6101 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
6102 bdaddr_t *bdaddr, u8 bdaddr_type,
6103 bdaddr_t *local_rpa, u8 role, u16 handle,
6104 u16 interval, u16 latency,
6105 u16 supervision_timeout)
6107 struct hci_conn_params *params;
6108 struct hci_conn *conn;
6109 struct smp_irk *irk;
6114 /* All controllers implicitly stop advertising in the event of a
6115 * connection, so ensure that the state bit is cleared.
6117 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6119 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
6121 /* In case of error status and there is no connection pending
6122 * just unlock as there is nothing to cleanup.
6127 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role);
6129 bt_dev_err(hdev, "no memory for new connection");
6133 conn->dst_type = bdaddr_type;
6135 /* If we didn't have a hci_conn object previously
6136 * but we're in central role this must be something
6137 * initiated using an accept list. Since accept list based
6138 * connections are not "first class citizens" we don't
6139 * have full tracking of them. Therefore, we go ahead
6140 * with a "best effort" approach of determining the
6141 * initiator address based on the HCI_PRIVACY flag.
6144 conn->resp_addr_type = bdaddr_type;
6145 bacpy(&conn->resp_addr, bdaddr);
6146 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
6147 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
6148 bacpy(&conn->init_addr, &hdev->rpa);
6150 hci_copy_identity_address(hdev,
6152 &conn->init_addr_type);
6157 /* LE auto connect */
6158 bacpy(&conn->dst, bdaddr);
6160 cancel_delayed_work(&conn->le_conn_timeout);
6163 /* The HCI_LE_Connection_Complete event is only sent once per connection.
6164 * Processing it more than once per connection can corrupt kernel memory.
6166 * As the connection handle is set here for the first time, it indicates
6167 * whether the connection is already set up.
6169 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
6170 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
6174 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
6176 /* Lookup the identity address from the stored connection
6177 * address and address type.
6179 * When establishing connections to an identity address, the
6180 * connection procedure will store the resolvable random
6181 * address first. Now if it can be converted back into the
6182 * identity address, start using the identity address from
6185 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
6187 bacpy(&conn->dst, &irk->bdaddr);
6188 conn->dst_type = irk->addr_type;
6191 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
6193 /* All connection failure handling is taken care of by the
6194 * hci_conn_failed function which is triggered by the HCI
6195 * request completion callbacks used for connecting.
6197 if (status || hci_conn_set_handle(conn, handle))
6200 /* Drop the connection if it has been aborted */
6201 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
6202 hci_conn_drop(conn);
6206 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
6207 addr_type = BDADDR_LE_PUBLIC;
6209 addr_type = BDADDR_LE_RANDOM;
6211 /* Drop the connection if the device is blocked */
6212 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
6213 hci_conn_drop(conn);
6217 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
6218 mgmt_device_connected(hdev, conn, NULL, 0);
6220 conn->sec_level = BT_SECURITY_LOW;
6221 conn->state = BT_CONFIG;
6223 /* Store current advertising instance as connection advertising instance
6224 * when sotfware rotation is in use so it can be re-enabled when
6227 if (!ext_adv_capable(hdev))
6228 conn->adv_instance = hdev->cur_adv_instance;
6230 conn->le_conn_interval = interval;
6231 conn->le_conn_latency = latency;
6232 conn->le_supv_timeout = supervision_timeout;
6234 hci_debugfs_create_conn(conn);
6235 hci_conn_add_sysfs(conn);
6237 /* The remote features procedure is defined for central
6238 * role only. So only in case of an initiated connection
6239 * request the remote features.
6241 * If the local controller supports peripheral-initiated features
6242 * exchange, then requesting the remote features in peripheral
6243 * role is possible. Otherwise just transition into the
6244 * connected state without requesting the remote features.
6247 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
6248 struct hci_cp_le_read_remote_features cp;
6250 cp.handle = __cpu_to_le16(conn->handle);
6252 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6255 hci_conn_hold(conn);
6257 conn->state = BT_CONNECTED;
6258 hci_connect_cfm(conn, status);
6261 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
6264 hci_pend_le_list_del_init(params);
6266 hci_conn_drop(params->conn);
6267 hci_conn_put(params->conn);
6268 params->conn = NULL;
6273 hci_update_passive_scan(hdev);
6274 hci_dev_unlock(hdev);
6277 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6278 struct sk_buff *skb)
6280 struct hci_ev_le_conn_complete *ev = data;
6282 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6284 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6285 NULL, ev->role, le16_to_cpu(ev->handle),
6286 le16_to_cpu(ev->interval),
6287 le16_to_cpu(ev->latency),
6288 le16_to_cpu(ev->supervision_timeout));
6291 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6292 struct sk_buff *skb)
6294 struct hci_ev_le_enh_conn_complete *ev = data;
6296 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6298 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6299 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6300 le16_to_cpu(ev->interval),
6301 le16_to_cpu(ev->latency),
6302 le16_to_cpu(ev->supervision_timeout));
6305 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6306 struct sk_buff *skb)
6308 struct hci_evt_le_ext_adv_set_term *ev = data;
6309 struct hci_conn *conn;
6310 struct adv_info *adv, *n;
6312 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6314 /* The Bluetooth Core 5.3 specification clearly states that this event
6315 * shall not be sent when the Host disables the advertising set. So in
6316 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6318 * When the Host disables an advertising set, all cleanup is done via
6319 * its command callback and not needed to be duplicated here.
6321 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6322 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6328 adv = hci_find_adv_instance(hdev, ev->handle);
6334 /* Remove advertising as it has been terminated */
6335 hci_remove_adv_instance(hdev, ev->handle);
6336 mgmt_advertising_removed(NULL, hdev, ev->handle);
6338 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6343 /* We are no longer advertising, clear HCI_LE_ADV */
6344 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6349 adv->enabled = false;
6351 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6353 /* Store handle in the connection so the correct advertising
6354 * instance can be re-enabled when disconnected.
6356 conn->adv_instance = ev->handle;
6358 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6359 bacmp(&conn->resp_addr, BDADDR_ANY))
6363 bacpy(&conn->resp_addr, &hdev->random_addr);
6368 bacpy(&conn->resp_addr, &adv->random_addr);
6372 hci_dev_unlock(hdev);
6375 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6376 struct sk_buff *skb)
6378 struct hci_ev_le_conn_update_complete *ev = data;
6379 struct hci_conn *conn;
6381 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6388 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6392 hci_dev_unlock(hdev);
6393 mgmt_le_conn_update_failed(hdev, &conn->dst,
6394 conn->type, conn->dst_type, ev->status);
6398 conn->le_conn_interval = le16_to_cpu(ev->interval);
6399 conn->le_conn_latency = le16_to_cpu(ev->latency);
6400 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6403 hci_dev_unlock(hdev);
6406 mgmt_le_conn_updated(hdev, &conn->dst, conn->type,
6407 conn->dst_type, conn->le_conn_interval,
6408 conn->le_conn_latency, conn->le_supv_timeout);
6412 /* This function requires the caller holds hdev->lock */
6413 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6415 u8 addr_type, bool addr_resolved,
6418 struct hci_conn *conn;
6419 struct hci_conn_params *params;
6421 /* If the event is not connectable don't proceed further */
6422 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6425 /* Ignore if the device is blocked or hdev is suspended */
6426 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6430 /* Most controller will fail if we try to create new connections
6431 * while we have an existing one in peripheral role.
6433 if (hdev->conn_hash.le_num_peripheral > 0 &&
6434 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6435 !(hdev->le_states[3] & 0x10)))
6438 /* If we're not connectable only connect devices that we have in
6439 * our pend_le_conns list.
6441 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6446 if (!params->explicit_connect) {
6447 switch (params->auto_connect) {
6448 case HCI_AUTO_CONN_DIRECT:
6449 /* Only devices advertising with ADV_DIRECT_IND are
6450 * triggering a connection attempt. This is allowing
6451 * incoming connections from peripheral devices.
6453 if (adv_type != LE_ADV_DIRECT_IND)
6456 case HCI_AUTO_CONN_ALWAYS:
6457 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6458 * are triggering a connection attempt. This means
6459 * that incoming connections from peripheral device are
6460 * accepted and also outgoing connections to peripheral
6461 * devices are established when found.
6469 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6470 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6472 if (!IS_ERR(conn)) {
6473 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6474 * by higher layer that tried to connect, if no then
6475 * store the pointer since we don't really have any
6476 * other owner of the object besides the params that
6477 * triggered it. This way we can abort the connection if
6478 * the parameters get removed and keep the reference
6479 * count consistent once the connection is established.
6482 if (!params->explicit_connect)
6483 params->conn = hci_conn_get(conn);
6488 switch (PTR_ERR(conn)) {
6490 /* If hci_connect() returns -EBUSY it means there is already
6491 * an LE connection attempt going on. Since controllers don't
6492 * support more than one connection attempt at the time, we
6493 * don't consider this an error case.
6497 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6504 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6505 u8 bdaddr_type, bdaddr_t *direct_addr,
6506 u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6507 bool ext_adv, bool ctl_time, u64 instant)
6510 struct discovery_state *d = &hdev->discovery;
6513 struct smp_irk *irk;
6514 struct hci_conn *conn;
6515 bool bdaddr_resolved;
6521 case LE_ADV_DIRECT_IND:
6522 case LE_ADV_SCAN_IND:
6523 case LE_ADV_NONCONN_IND:
6524 case LE_ADV_SCAN_RSP:
6527 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6528 "type: 0x%02x", type);
6532 if (len > max_adv_len(hdev)) {
6533 bt_dev_err_ratelimited(hdev,
6534 "adv larger than maximum supported");
6538 /* Find the end of the data in case the report contains padded zero
6539 * bytes at the end causing an invalid length value.
6541 * When data is NULL, len is 0 so there is no need for extra ptr
6542 * check as 'ptr < data + 0' is already false in such case.
6544 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6545 if (ptr + 1 + *ptr > data + len)
6549 /* Adjust for actual length. This handles the case when remote
6550 * device is advertising with incorrect data length.
6554 /* If the direct address is present, then this report is from
6555 * a LE Direct Advertising Report event. In that case it is
6556 * important to see if the address is matching the local
6557 * controller address.
6559 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6560 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6563 /* Only resolvable random addresses are valid for these
6564 * kind of reports and others can be ignored.
6566 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6569 /* If the controller is not using resolvable random
6570 * addresses, then this report can be ignored.
6572 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6575 /* If the local IRK of the controller does not match
6576 * with the resolvable random address provided, then
6577 * this report can be ignored.
6579 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6583 /* Check if we need to convert to identity address */
6584 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6586 bdaddr = &irk->bdaddr;
6587 bdaddr_type = irk->addr_type;
6590 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6592 /* Check if we have been requested to connect to this device.
6594 * direct_addr is set only for directed advertising reports (it is NULL
6595 * for advertising reports) and is already verified to be RPA above.
6597 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6599 if (!ext_adv && conn && type == LE_ADV_IND &&
6600 len <= max_adv_len(hdev)) {
6601 /* Store report for later inclusion by
6602 * mgmt_device_connected
6604 memcpy(conn->le_adv_data, data, len);
6605 conn->le_adv_data_len = len;
6608 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6609 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6613 /* All scan results should be sent up for Mesh systems */
6614 if (hci_dev_test_flag(hdev, HCI_MESH)) {
6615 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6616 rssi, flags, data, len, NULL, 0, instant);
6620 /* Passive scanning shouldn't trigger any device found events,
6621 * except for devices marked as CONN_REPORT for which we do send
6622 * device found events, or advertisement monitoring requested.
6624 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6625 if (type == LE_ADV_DIRECT_IND)
6629 /* Handle all adv packet in platform */
6630 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6631 bdaddr, bdaddr_type) &&
6632 idr_is_empty(&hdev->adv_monitors_idr))
6637 mgmt_le_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6638 rssi, flags, data, len, NULL, 0, type);
6640 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6641 rssi, flags, data, len, NULL, 0, 0);
6646 /* When receiving a scan response, then there is no way to
6647 * know if the remote device is connectable or not. However
6648 * since scan responses are merged with a previously seen
6649 * advertising report, the flags field from that report
6652 * In the unlikely case that a controller just sends a scan
6653 * response event that doesn't match the pending report, then
6654 * it is marked as a standalone SCAN_RSP.
6656 if (type == LE_ADV_SCAN_RSP)
6657 flags = MGMT_DEV_FOUND_SCAN_RSP;
6660 /* Disable adv ind and scan rsp merging */
6661 mgmt_le_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6662 rssi, flags, data, len, NULL, 0, type);
6664 /* If there's nothing pending either store the data from this
6665 * event or send an immediate device found event if the data
6666 * should not be stored for later.
6668 if (!ext_adv && !has_pending_adv_report(hdev)) {
6669 /* If the report will trigger a SCAN_REQ store it for
6672 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6673 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6674 rssi, flags, data, len);
6678 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6679 rssi, flags, data, len, NULL, 0, 0);
6683 /* Check if the pending report is for the same device as the new one */
6684 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6685 bdaddr_type == d->last_adv_addr_type);
6687 /* If the pending data doesn't match this report or this isn't a
6688 * scan response (e.g. we got a duplicate ADV_IND) then force
6689 * sending of the pending data.
6691 if (type != LE_ADV_SCAN_RSP || !match) {
6692 /* Send out whatever is in the cache, but skip duplicates */
6694 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6695 d->last_adv_addr_type, NULL,
6696 d->last_adv_rssi, d->last_adv_flags,
6698 d->last_adv_data_len, NULL, 0, 0);
6700 /* If the new report will trigger a SCAN_REQ store it for
6703 if (!ext_adv && (type == LE_ADV_IND ||
6704 type == LE_ADV_SCAN_IND)) {
6705 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6706 rssi, flags, data, len);
6710 /* The advertising reports cannot be merged, so clear
6711 * the pending report and send out a device found event.
6713 clear_pending_adv_report(hdev);
6714 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6715 rssi, flags, data, len, NULL, 0, 0);
6719 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6720 * the new event is a SCAN_RSP. We can therefore proceed with
6721 * sending a merged device found event.
6723 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6724 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6725 d->last_adv_data, d->last_adv_data_len, data, len, 0);
6726 clear_pending_adv_report(hdev);
6730 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6731 struct sk_buff *skb)
6733 struct hci_ev_le_advertising_report *ev = data;
6734 u64 instant = jiffies;
6742 struct hci_ev_le_advertising_info *info;
6745 info = hci_le_ev_skb_pull(hdev, skb,
6746 HCI_EV_LE_ADVERTISING_REPORT,
6751 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6755 if (info->length <= max_adv_len(hdev)) {
6756 rssi = info->data[info->length];
6757 process_adv_report(hdev, info->type, &info->bdaddr,
6758 info->bdaddr_type, NULL, 0, rssi,
6759 info->data, info->length, false,
6762 bt_dev_err(hdev, "Dropping invalid advertising data");
6766 hci_dev_unlock(hdev);
6769 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6771 if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6773 case LE_LEGACY_ADV_IND:
6775 case LE_LEGACY_ADV_DIRECT_IND:
6776 return LE_ADV_DIRECT_IND;
6777 case LE_LEGACY_ADV_SCAN_IND:
6778 return LE_ADV_SCAN_IND;
6779 case LE_LEGACY_NONCONN_IND:
6780 return LE_ADV_NONCONN_IND;
6781 case LE_LEGACY_SCAN_RSP_ADV:
6782 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6783 return LE_ADV_SCAN_RSP;
6789 if (evt_type & LE_EXT_ADV_CONN_IND) {
6790 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6791 return LE_ADV_DIRECT_IND;
6796 if (evt_type & LE_EXT_ADV_SCAN_RSP)
6797 return LE_ADV_SCAN_RSP;
6799 if (evt_type & LE_EXT_ADV_SCAN_IND)
6800 return LE_ADV_SCAN_IND;
6802 if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6803 evt_type & LE_EXT_ADV_DIRECT_IND)
6804 return LE_ADV_NONCONN_IND;
6807 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6810 return LE_ADV_INVALID;
6813 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6814 struct sk_buff *skb)
6816 struct hci_ev_le_ext_adv_report *ev = data;
6817 u64 instant = jiffies;
6825 struct hci_ev_le_ext_adv_info *info;
6829 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6834 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6838 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK;
6839 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6840 if (legacy_evt_type != LE_ADV_INVALID) {
6841 process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6842 info->bdaddr_type, NULL, 0,
6843 info->rssi, info->data, info->length,
6844 !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6849 hci_dev_unlock(hdev);
6852 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6854 struct hci_cp_le_pa_term_sync cp;
6856 memset(&cp, 0, sizeof(cp));
6859 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6862 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6863 struct sk_buff *skb)
6865 struct hci_ev_le_pa_sync_established *ev = data;
6866 int mask = hdev->link_mode;
6868 struct hci_conn *pa_sync;
6870 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6874 hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6876 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6877 if (!(mask & HCI_LM_ACCEPT)) {
6878 hci_le_pa_term_sync(hdev, ev->handle);
6882 if (!(flags & HCI_PROTO_DEFER))
6886 /* Add connection to indicate the failed PA sync event */
6887 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
6893 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags);
6895 /* Notify iso layer */
6896 hci_connect_cfm(pa_sync, ev->status);
6900 hci_dev_unlock(hdev);
6903 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data,
6904 struct sk_buff *skb)
6906 struct hci_ev_le_per_adv_report *ev = data;
6907 int mask = hdev->link_mode;
6910 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
6914 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
6915 if (!(mask & HCI_LM_ACCEPT))
6916 hci_le_pa_term_sync(hdev, ev->sync_handle);
6918 hci_dev_unlock(hdev);
6921 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6922 struct sk_buff *skb)
6924 struct hci_ev_le_remote_feat_complete *ev = data;
6925 struct hci_conn *conn;
6927 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6931 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6934 memcpy(conn->features[0], ev->features, 8);
6936 if (conn->state == BT_CONFIG) {
6939 /* If the local controller supports peripheral-initiated
6940 * features exchange, but the remote controller does
6941 * not, then it is possible that the error code 0x1a
6942 * for unsupported remote feature gets returned.
6944 * In this specific case, allow the connection to
6945 * transition into connected state and mark it as
6948 if (!conn->out && ev->status == 0x1a &&
6949 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6952 status = ev->status;
6954 conn->state = BT_CONNECTED;
6955 hci_connect_cfm(conn, status);
6956 hci_conn_drop(conn);
6960 hci_dev_unlock(hdev);
6963 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6964 struct sk_buff *skb)
6966 struct hci_ev_le_ltk_req *ev = data;
6967 struct hci_cp_le_ltk_reply cp;
6968 struct hci_cp_le_ltk_neg_reply neg;
6969 struct hci_conn *conn;
6970 struct smp_ltk *ltk;
6972 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6976 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6980 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6984 if (smp_ltk_is_sc(ltk)) {
6985 /* With SC both EDiv and Rand are set to zero */
6986 if (ev->ediv || ev->rand)
6989 /* For non-SC keys check that EDiv and Rand match */
6990 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6994 memcpy(cp.ltk, ltk->val, ltk->enc_size);
6995 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6996 cp.handle = cpu_to_le16(conn->handle);
6998 conn->pending_sec_level = smp_ltk_sec_level(ltk);
7000 conn->enc_key_size = ltk->enc_size;
7002 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
7004 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
7005 * temporary key used to encrypt a connection following
7006 * pairing. It is used during the Encrypted Session Setup to
7007 * distribute the keys. Later, security can be re-established
7008 * using a distributed LTK.
7010 if (ltk->type == SMP_STK) {
7011 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
7012 list_del_rcu(<k->list);
7013 kfree_rcu(ltk, rcu);
7015 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
7018 hci_dev_unlock(hdev);
7023 neg.handle = ev->handle;
7024 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
7025 hci_dev_unlock(hdev);
7028 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
7031 struct hci_cp_le_conn_param_req_neg_reply cp;
7033 cp.handle = cpu_to_le16(handle);
7036 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
7040 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
7041 struct sk_buff *skb)
7043 struct hci_ev_le_remote_conn_param_req *ev = data;
7044 struct hci_cp_le_conn_param_req_reply cp;
7045 struct hci_conn *hcon;
7046 u16 handle, min, max, latency, timeout;
7048 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
7050 handle = le16_to_cpu(ev->handle);
7051 min = le16_to_cpu(ev->interval_min);
7052 max = le16_to_cpu(ev->interval_max);
7053 latency = le16_to_cpu(ev->latency);
7054 timeout = le16_to_cpu(ev->timeout);
7056 hcon = hci_conn_hash_lookup_handle(hdev, handle);
7057 if (!hcon || hcon->state != BT_CONNECTED)
7058 return send_conn_param_neg_reply(hdev, handle,
7059 HCI_ERROR_UNKNOWN_CONN_ID);
7061 if (hci_check_conn_params(min, max, latency, timeout))
7062 return send_conn_param_neg_reply(hdev, handle,
7063 HCI_ERROR_INVALID_LL_PARAMS);
7065 if (hcon->role == HCI_ROLE_MASTER) {
7066 struct hci_conn_params *params;
7071 params = hci_conn_params_lookup(hdev, &hcon->dst,
7074 params->conn_min_interval = min;
7075 params->conn_max_interval = max;
7076 params->conn_latency = latency;
7077 params->supervision_timeout = timeout;
7083 hci_dev_unlock(hdev);
7085 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
7086 store_hint, min, max, latency, timeout);
7089 cp.handle = ev->handle;
7090 cp.interval_min = ev->interval_min;
7091 cp.interval_max = ev->interval_max;
7092 cp.latency = ev->latency;
7093 cp.timeout = ev->timeout;
7097 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
7100 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
7101 struct sk_buff *skb)
7103 struct hci_ev_le_direct_adv_report *ev = data;
7104 u64 instant = jiffies;
7107 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
7108 flex_array_size(ev, info, ev->num)))
7116 for (i = 0; i < ev->num; i++) {
7117 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
7119 process_adv_report(hdev, info->type, &info->bdaddr,
7120 info->bdaddr_type, &info->direct_addr,
7121 info->direct_addr_type, info->rssi, NULL, 0,
7122 false, false, instant);
7125 hci_dev_unlock(hdev);
7128 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
7129 struct sk_buff *skb)
7131 struct hci_ev_le_phy_update_complete *ev = data;
7132 struct hci_conn *conn;
7134 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7141 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
7145 conn->le_tx_phy = ev->tx_phy;
7146 conn->le_rx_phy = ev->rx_phy;
7149 hci_dev_unlock(hdev);
7152 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
7153 struct sk_buff *skb)
7155 struct hci_evt_le_cis_established *ev = data;
7156 struct hci_conn *conn;
7157 struct bt_iso_qos *qos;
7158 bool pending = false;
7159 u16 handle = __le16_to_cpu(ev->handle);
7161 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7165 conn = hci_conn_hash_lookup_handle(hdev, handle);
7168 "Unable to find connection with handle 0x%4.4x",
7173 if (conn->type != ISO_LINK) {
7175 "Invalid connection link type handle 0x%4.4x",
7180 qos = &conn->iso_qos;
7182 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags);
7184 /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
7185 qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
7186 qos->ucast.out.interval = qos->ucast.in.interval;
7188 switch (conn->role) {
7189 case HCI_ROLE_SLAVE:
7190 /* Convert Transport Latency (us) to Latency (msec) */
7191 qos->ucast.in.latency =
7192 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
7194 qos->ucast.out.latency =
7195 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
7197 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
7198 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
7199 qos->ucast.in.phy = ev->c_phy;
7200 qos->ucast.out.phy = ev->p_phy;
7202 case HCI_ROLE_MASTER:
7203 /* Convert Transport Latency (us) to Latency (msec) */
7204 qos->ucast.out.latency =
7205 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
7207 qos->ucast.in.latency =
7208 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
7210 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
7211 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
7212 qos->ucast.out.phy = ev->c_phy;
7213 qos->ucast.in.phy = ev->p_phy;
7218 conn->state = BT_CONNECTED;
7219 hci_debugfs_create_conn(conn);
7220 hci_conn_add_sysfs(conn);
7221 hci_iso_setup_path(conn);
7225 conn->state = BT_CLOSED;
7226 hci_connect_cfm(conn, ev->status);
7231 hci_le_create_cis_pending(hdev);
7233 hci_dev_unlock(hdev);
7236 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
7238 struct hci_cp_le_reject_cis cp;
7240 memset(&cp, 0, sizeof(cp));
7242 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
7243 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
7246 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
7248 struct hci_cp_le_accept_cis cp;
7250 memset(&cp, 0, sizeof(cp));
7252 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
7255 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
7256 struct sk_buff *skb)
7258 struct hci_evt_le_cis_req *ev = data;
7259 u16 acl_handle, cis_handle;
7260 struct hci_conn *acl, *cis;
7264 acl_handle = __le16_to_cpu(ev->acl_handle);
7265 cis_handle = __le16_to_cpu(ev->cis_handle);
7267 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
7268 acl_handle, cis_handle, ev->cig_id, ev->cis_id);
7272 acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
7276 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
7277 if (!(mask & HCI_LM_ACCEPT)) {
7278 hci_le_reject_cis(hdev, ev->cis_handle);
7282 cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
7284 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE,
7287 hci_le_reject_cis(hdev, ev->cis_handle);
7292 cis->iso_qos.ucast.cig = ev->cig_id;
7293 cis->iso_qos.ucast.cis = ev->cis_id;
7295 if (!(flags & HCI_PROTO_DEFER)) {
7296 hci_le_accept_cis(hdev, ev->cis_handle);
7298 cis->state = BT_CONNECT2;
7299 hci_connect_cfm(cis, 0);
7303 hci_dev_unlock(hdev);
7306 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data)
7308 u8 handle = PTR_UINT(data);
7310 return hci_le_terminate_big_sync(hdev, handle,
7311 HCI_ERROR_LOCAL_HOST_TERM);
7314 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
7315 struct sk_buff *skb)
7317 struct hci_evt_le_create_big_complete *ev = data;
7318 struct hci_conn *conn;
7321 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
7323 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
7324 flex_array_size(ev, bis_handle, ev->num_bis)))
7330 /* Connect all BISes that are bound to the BIG */
7331 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
7332 if (bacmp(&conn->dst, BDADDR_ANY) ||
7333 conn->type != ISO_LINK ||
7334 conn->iso_qos.bcast.big != ev->handle)
7337 if (hci_conn_set_handle(conn,
7338 __le16_to_cpu(ev->bis_handle[i++])))
7342 conn->state = BT_CONNECTED;
7343 set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
7345 hci_debugfs_create_conn(conn);
7346 hci_conn_add_sysfs(conn);
7347 hci_iso_setup_path(conn);
7352 hci_connect_cfm(conn, ev->status);
7360 if (!ev->status && !i)
7361 /* If no BISes have been connected for the BIG,
7362 * terminate. This is in case all bound connections
7363 * have been closed before the BIG creation
7366 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
7367 UINT_PTR(ev->handle), NULL);
7369 hci_dev_unlock(hdev);
7372 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7373 struct sk_buff *skb)
7375 struct hci_evt_le_big_sync_estabilished *ev = data;
7376 struct hci_conn *bis;
7377 struct hci_conn *pa_sync;
7380 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7382 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7383 flex_array_size(ev, bis, ev->num_bis)))
7389 pa_sync = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle);
7391 /* Also mark the BIG sync established event on the
7392 * associated PA sync hcon
7394 set_bit(HCI_CONN_BIG_SYNC, &pa_sync->flags);
7397 for (i = 0; i < ev->num_bis; i++) {
7398 u16 handle = le16_to_cpu(ev->bis[i]);
7401 bis = hci_conn_hash_lookup_handle(hdev, handle);
7403 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7404 HCI_ROLE_SLAVE, handle);
7409 if (ev->status != 0x42)
7410 /* Mark PA sync as established */
7411 set_bit(HCI_CONN_PA_SYNC, &bis->flags);
7413 bis->iso_qos.bcast.big = ev->handle;
7414 memset(&interval, 0, sizeof(interval));
7415 memcpy(&interval, ev->latency, sizeof(ev->latency));
7416 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
7417 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7418 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7419 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
7422 set_bit(HCI_CONN_BIG_SYNC, &bis->flags);
7423 hci_iso_setup_path(bis);
7427 /* In case BIG sync failed, notify each failed connection to
7428 * the user after all hci connections have been added
7431 for (i = 0; i < ev->num_bis; i++) {
7432 u16 handle = le16_to_cpu(ev->bis[i]);
7434 bis = hci_conn_hash_lookup_handle(hdev, handle);
7436 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
7437 hci_connect_cfm(bis, ev->status);
7440 hci_dev_unlock(hdev);
7443 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7444 struct sk_buff *skb)
7446 struct hci_evt_le_big_info_adv_report *ev = data;
7447 int mask = hdev->link_mode;
7449 struct hci_conn *pa_sync;
7451 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7455 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7456 if (!(mask & HCI_LM_ACCEPT)) {
7457 hci_le_pa_term_sync(hdev, ev->sync_handle);
7461 if (!(flags & HCI_PROTO_DEFER))
7464 pa_sync = hci_conn_hash_lookup_pa_sync_handle
7466 le16_to_cpu(ev->sync_handle));
7471 /* Add connection to indicate the PA sync event */
7472 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
7478 pa_sync->sync_handle = le16_to_cpu(ev->sync_handle);
7479 set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags);
7481 /* Notify iso layer */
7482 hci_connect_cfm(pa_sync, 0x00);
7485 hci_dev_unlock(hdev);
7488 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7491 .min_len = _min_len, \
7492 .max_len = _max_len, \
7495 #define HCI_LE_EV(_op, _func, _len) \
7496 HCI_LE_EV_VL(_op, _func, _len, _len)
7498 #define HCI_LE_EV_STATUS(_op, _func) \
7499 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7501 /* Entries in this table shall have their position according to the subevent
7502 * opcode they handle so the use of the macros above is recommend since it does
7503 * attempt to initialize at its proper index using Designated Initializers that
7504 * way events without a callback function can be ommited.
7506 static const struct hci_le_ev {
7507 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7510 } hci_le_ev_table[U8_MAX + 1] = {
7511 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7512 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7513 sizeof(struct hci_ev_le_conn_complete)),
7514 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7515 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7516 sizeof(struct hci_ev_le_advertising_report),
7517 HCI_MAX_EVENT_SIZE),
7518 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7519 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7520 hci_le_conn_update_complete_evt,
7521 sizeof(struct hci_ev_le_conn_update_complete)),
7522 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7523 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7524 hci_le_remote_feat_complete_evt,
7525 sizeof(struct hci_ev_le_remote_feat_complete)),
7526 /* [0x05 = HCI_EV_LE_LTK_REQ] */
7527 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7528 sizeof(struct hci_ev_le_ltk_req)),
7529 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7530 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7531 hci_le_remote_conn_param_req_evt,
7532 sizeof(struct hci_ev_le_remote_conn_param_req)),
7533 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7534 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7535 hci_le_enh_conn_complete_evt,
7536 sizeof(struct hci_ev_le_enh_conn_complete)),
7537 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7538 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7539 sizeof(struct hci_ev_le_direct_adv_report),
7540 HCI_MAX_EVENT_SIZE),
7541 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7542 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7543 sizeof(struct hci_ev_le_phy_update_complete)),
7544 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7545 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7546 sizeof(struct hci_ev_le_ext_adv_report),
7547 HCI_MAX_EVENT_SIZE),
7548 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7549 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7550 hci_le_pa_sync_estabilished_evt,
7551 sizeof(struct hci_ev_le_pa_sync_established)),
7552 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */
7553 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT,
7554 hci_le_per_adv_report_evt,
7555 sizeof(struct hci_ev_le_per_adv_report),
7556 HCI_MAX_EVENT_SIZE),
7557 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7558 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7559 sizeof(struct hci_evt_le_ext_adv_set_term)),
7560 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7561 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7562 sizeof(struct hci_evt_le_cis_established)),
7563 /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7564 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7565 sizeof(struct hci_evt_le_cis_req)),
7566 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7567 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7568 hci_le_create_big_complete_evt,
7569 sizeof(struct hci_evt_le_create_big_complete),
7570 HCI_MAX_EVENT_SIZE),
7571 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7572 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7573 hci_le_big_sync_established_evt,
7574 sizeof(struct hci_evt_le_big_sync_estabilished),
7575 HCI_MAX_EVENT_SIZE),
7576 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7577 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7578 hci_le_big_info_adv_report_evt,
7579 sizeof(struct hci_evt_le_big_info_adv_report),
7580 HCI_MAX_EVENT_SIZE),
7583 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7584 struct sk_buff *skb, u16 *opcode, u8 *status,
7585 hci_req_complete_t *req_complete,
7586 hci_req_complete_skb_t *req_complete_skb)
7588 struct hci_ev_le_meta *ev = data;
7589 const struct hci_le_ev *subev;
7591 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7593 /* Only match event if command OGF is for LE */
7594 if (hdev->sent_cmd &&
7595 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7596 hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7597 *opcode = hci_skb_opcode(hdev->sent_cmd);
7598 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7602 subev = &hci_le_ev_table[ev->subevent];
7606 if (skb->len < subev->min_len) {
7607 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7608 ev->subevent, skb->len, subev->min_len);
7612 /* Just warn if the length is over max_len size it still be
7613 * possible to partially parse the event so leave to callback to
7614 * decide if that is acceptable.
7616 if (skb->len > subev->max_len)
7617 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7618 ev->subevent, skb->len, subev->max_len);
7619 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7623 subev->func(hdev, data, skb);
7626 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7627 u8 event, struct sk_buff *skb)
7629 struct hci_ev_cmd_complete *ev;
7630 struct hci_event_hdr *hdr;
7635 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7640 if (hdr->evt != event)
7645 /* Check if request ended in Command Status - no way to retrieve
7646 * any extra parameters in this case.
7648 if (hdr->evt == HCI_EV_CMD_STATUS)
7651 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7652 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7657 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7661 if (opcode != __le16_to_cpu(ev->opcode)) {
7662 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7663 __le16_to_cpu(ev->opcode));
7670 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7671 struct sk_buff *skb)
7673 struct hci_ev_le_advertising_info *adv;
7674 struct hci_ev_le_direct_adv_info *direct_adv;
7675 struct hci_ev_le_ext_adv_info *ext_adv;
7676 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7677 const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7681 /* If we are currently suspended and this is the first BT event seen,
7682 * save the wake reason associated with the event.
7684 if (!hdev->suspended || hdev->wake_reason)
7687 /* Default to remote wake. Values for wake_reason are documented in the
7688 * Bluez mgmt api docs.
7690 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7692 /* Once configured for remote wakeup, we should only wake up for
7693 * reconnections. It's useful to see which device is waking us up so
7694 * keep track of the bdaddr of the connection event that woke us up.
7696 if (event == HCI_EV_CONN_REQUEST) {
7697 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7698 hdev->wake_addr_type = BDADDR_BREDR;
7699 } else if (event == HCI_EV_CONN_COMPLETE) {
7700 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7701 hdev->wake_addr_type = BDADDR_BREDR;
7702 } else if (event == HCI_EV_LE_META) {
7703 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7704 u8 subevent = le_ev->subevent;
7705 u8 *ptr = &skb->data[sizeof(*le_ev)];
7706 u8 num_reports = *ptr;
7708 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7709 subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7710 subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7712 adv = (void *)(ptr + 1);
7713 direct_adv = (void *)(ptr + 1);
7714 ext_adv = (void *)(ptr + 1);
7717 case HCI_EV_LE_ADVERTISING_REPORT:
7718 bacpy(&hdev->wake_addr, &adv->bdaddr);
7719 hdev->wake_addr_type = adv->bdaddr_type;
7721 case HCI_EV_LE_DIRECT_ADV_REPORT:
7722 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7723 hdev->wake_addr_type = direct_adv->bdaddr_type;
7725 case HCI_EV_LE_EXT_ADV_REPORT:
7726 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7727 hdev->wake_addr_type = ext_adv->bdaddr_type;
7732 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7736 hci_dev_unlock(hdev);
7739 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7743 .min_len = _min_len, \
7744 .max_len = _max_len, \
7747 #define HCI_EV(_op, _func, _len) \
7748 HCI_EV_VL(_op, _func, _len, _len)
7750 #define HCI_EV_STATUS(_op, _func) \
7751 HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7753 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7756 .func_req = _func, \
7757 .min_len = _min_len, \
7758 .max_len = _max_len, \
7761 #define HCI_EV_REQ(_op, _func, _len) \
7762 HCI_EV_REQ_VL(_op, _func, _len, _len)
7764 /* Entries in this table shall have their position according to the event opcode
7765 * they handle so the use of the macros above is recommend since it does attempt
7766 * to initialize at its proper index using Designated Initializers that way
7767 * events without a callback function don't have entered.
7769 static const struct hci_ev {
7772 void (*func)(struct hci_dev *hdev, void *data,
7773 struct sk_buff *skb);
7774 void (*func_req)(struct hci_dev *hdev, void *data,
7775 struct sk_buff *skb, u16 *opcode, u8 *status,
7776 hci_req_complete_t *req_complete,
7777 hci_req_complete_skb_t *req_complete_skb);
7781 } hci_ev_table[U8_MAX + 1] = {
7782 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7783 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7784 /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7785 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7786 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7787 /* [0x03 = HCI_EV_CONN_COMPLETE] */
7788 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7789 sizeof(struct hci_ev_conn_complete)),
7790 /* [0x04 = HCI_EV_CONN_REQUEST] */
7791 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7792 sizeof(struct hci_ev_conn_request)),
7793 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7794 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7795 sizeof(struct hci_ev_disconn_complete)),
7796 /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7797 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7798 sizeof(struct hci_ev_auth_complete)),
7799 /* [0x07 = HCI_EV_REMOTE_NAME] */
7800 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7801 sizeof(struct hci_ev_remote_name)),
7802 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7803 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7804 sizeof(struct hci_ev_encrypt_change)),
7805 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7806 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7807 hci_change_link_key_complete_evt,
7808 sizeof(struct hci_ev_change_link_key_complete)),
7809 /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7810 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7811 sizeof(struct hci_ev_remote_features)),
7812 /* [0x0e = HCI_EV_CMD_COMPLETE] */
7813 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7814 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7815 /* [0x0f = HCI_EV_CMD_STATUS] */
7816 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7817 sizeof(struct hci_ev_cmd_status)),
7818 /* [0x10 = HCI_EV_CMD_STATUS] */
7819 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7820 sizeof(struct hci_ev_hardware_error)),
7821 /* [0x12 = HCI_EV_ROLE_CHANGE] */
7822 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7823 sizeof(struct hci_ev_role_change)),
7824 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7825 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7826 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7827 /* [0x14 = HCI_EV_MODE_CHANGE] */
7828 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7829 sizeof(struct hci_ev_mode_change)),
7830 /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7831 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7832 sizeof(struct hci_ev_pin_code_req)),
7833 /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7834 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7835 sizeof(struct hci_ev_link_key_req)),
7836 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7837 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7838 sizeof(struct hci_ev_link_key_notify)),
7839 /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7840 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7841 sizeof(struct hci_ev_clock_offset)),
7842 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7843 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7844 sizeof(struct hci_ev_pkt_type_change)),
7845 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7846 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7847 sizeof(struct hci_ev_pscan_rep_mode)),
7848 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7849 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7850 hci_inquiry_result_with_rssi_evt,
7851 sizeof(struct hci_ev_inquiry_result_rssi),
7852 HCI_MAX_EVENT_SIZE),
7853 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7854 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7855 sizeof(struct hci_ev_remote_ext_features)),
7856 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7857 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7858 sizeof(struct hci_ev_sync_conn_complete)),
7859 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7860 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7861 hci_extended_inquiry_result_evt,
7862 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7863 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7864 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7865 sizeof(struct hci_ev_key_refresh_complete)),
7866 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7867 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7868 sizeof(struct hci_ev_io_capa_request)),
7869 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7870 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7871 sizeof(struct hci_ev_io_capa_reply)),
7872 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7873 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7874 sizeof(struct hci_ev_user_confirm_req)),
7875 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7876 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7877 sizeof(struct hci_ev_user_passkey_req)),
7878 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7879 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7880 sizeof(struct hci_ev_remote_oob_data_request)),
7881 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7882 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7883 sizeof(struct hci_ev_simple_pair_complete)),
7884 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7885 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7886 sizeof(struct hci_ev_user_passkey_notify)),
7887 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7888 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7889 sizeof(struct hci_ev_keypress_notify)),
7890 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7891 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7892 sizeof(struct hci_ev_remote_host_features)),
7893 /* [0x3e = HCI_EV_LE_META] */
7894 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7895 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7896 #if IS_ENABLED(CONFIG_BT_HS)
7897 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7898 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7899 sizeof(struct hci_ev_phy_link_complete)),
7900 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7901 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7902 sizeof(struct hci_ev_channel_selected)),
7903 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7904 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7905 hci_disconn_loglink_complete_evt,
7906 sizeof(struct hci_ev_disconn_logical_link_complete)),
7907 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7908 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7909 sizeof(struct hci_ev_logical_link_complete)),
7910 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7911 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7912 hci_disconn_phylink_complete_evt,
7913 sizeof(struct hci_ev_disconn_phy_link_complete)),
7915 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7916 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7917 sizeof(struct hci_ev_num_comp_blocks)),
7919 /* [0xFF = HCI_EV_VENDOR_SPECIFIC] */
7920 HCI_EV(HCI_EV_VENDOR_SPECIFIC, hci_vendor_specific_evt,
7921 sizeof(struct hci_ev_vendor_specific)),
7923 /* [0xff = HCI_EV_VENDOR] */
7924 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7928 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7929 u16 *opcode, u8 *status,
7930 hci_req_complete_t *req_complete,
7931 hci_req_complete_skb_t *req_complete_skb)
7933 const struct hci_ev *ev = &hci_ev_table[event];
7939 if (skb->len < ev->min_len) {
7940 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7941 event, skb->len, ev->min_len);
7945 /* Just warn if the length is over max_len size it still be
7946 * possible to partially parse the event so leave to callback to
7947 * decide if that is acceptable.
7949 if (skb->len > ev->max_len)
7950 bt_dev_warn_ratelimited(hdev,
7951 "unexpected event 0x%2.2x length: %u > %u",
7952 event, skb->len, ev->max_len);
7954 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7959 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7962 ev->func(hdev, data, skb);
7965 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7967 struct hci_event_hdr *hdr = (void *) skb->data;
7968 hci_req_complete_t req_complete = NULL;
7969 hci_req_complete_skb_t req_complete_skb = NULL;
7970 struct sk_buff *orig_skb = NULL;
7971 u8 status = 0, event, req_evt = 0;
7972 u16 opcode = HCI_OP_NOP;
7974 if (skb->len < sizeof(*hdr)) {
7975 bt_dev_err(hdev, "Malformed HCI Event");
7979 kfree_skb(hdev->recv_event);
7980 hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7984 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7989 /* Only match event if command OGF is not for LE */
7990 if (hdev->sent_cmd &&
7991 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7992 hci_skb_event(hdev->sent_cmd) == event) {
7993 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7994 status, &req_complete, &req_complete_skb);
7998 /* If it looks like we might end up having to call
7999 * req_complete_skb, store a pristine copy of the skb since the
8000 * various handlers may modify the original one through
8001 * skb_pull() calls, etc.
8003 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
8004 event == HCI_EV_CMD_COMPLETE)
8005 orig_skb = skb_clone(skb, GFP_KERNEL);
8007 skb_pull(skb, HCI_EVENT_HDR_SIZE);
8009 /* Store wake reason if we're suspended */
8010 hci_store_wake_reason(hdev, event, skb);
8012 bt_dev_dbg(hdev, "event 0x%2.2x", event);
8014 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
8018 req_complete(hdev, status, opcode);
8019 } else if (req_complete_skb) {
8020 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
8021 kfree_skb(orig_skb);
8024 req_complete_skb(hdev, status, opcode, orig_skb);
8028 kfree_skb(orig_skb);
8030 hdev->stat.evt_rx++;