diff options
Diffstat (limited to 'net/bluetooth/hci_event.c')
| -rw-r--r-- | net/bluetooth/hci_event.c | 5797 |
1 files changed, 4067 insertions, 1730 deletions
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 0b4dba08a14e..a9868f17ef40 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -1,6 +1,7 @@ /* BlueZ - Bluetooth protocol stack for Linux Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. + Copyright 2023-2024 NXP Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> @@ -24,31 +25,82 @@ /* Bluetooth HCI event handling. */ -#include <asm/unaligned.h> +#include <linux/unaligned.h> +#include <linux/crypto.h> +#include <crypto/algapi.h> #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> #include <net/bluetooth/mgmt.h> -#include "hci_request.h" #include "hci_debugfs.h" -#include "a2mp.h" -#include "amp.h" +#include "hci_codec.h" #include "smp.h" +#include "msft.h" +#include "eir.h" #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ "\x00\x00\x00\x00\x00\x00\x00\x00" /* Handle HCI Event packets */ -static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb) +static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, + u8 ev, size_t len) { - __u8 status = *((__u8 *) skb->data); + void *data; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + data = skb_pull_data(skb, len); + if (!data) + bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev); - if (status) - return; + return data; +} + +static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, + u16 op, size_t len) +{ + void *data; + + data = skb_pull_data(skb, len); + if (!data) + bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op); + + return data; +} + +static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, + u8 ev, size_t len) +{ + void *data; + + data = skb_pull_data(skb, len); + if (!data) + bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev); + + return data; +} + +static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_status *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + /* It is possible that we receive Inquiry Complete event right + * before we receive Inquiry Cancel Command Complete event, in + * which case the latter event should have status of Command + * Disallowed. This should not be treated as error, since + * we actually achieve what Inquiry Cancel wants to achieve, + * which is to end the last Inquiry session. + */ + if (rp->status == HCI_ERROR_COMMAND_DISALLOWED && !test_bit(HCI_INQUIRY, &hdev->flags)) { + bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command"); + rp->status = 0x00; + } + + if (rp->status) + return rp->status; clear_bit(HCI_INQUIRY, &hdev->flags); smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ @@ -63,50 +115,59 @@ static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb) hci_discovery_set_state(hdev, DISCOVERY_STOPPED); hci_dev_unlock(hdev); - hci_conn_check_pending(hdev); + return rp->status; } -static void hci_cc_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; hci_dev_set_flag(hdev, HCI_PERIODIC_INQ); + + return rp->status; } -static void hci_cc_exit_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); - hci_conn_check_pending(hdev); + return rp->status; } -static void hci_cc_remote_name_req_cancel(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - BT_DBG("%s", hdev->name); + struct hci_rp_remote_name_req_cancel *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + return rp->status; } -static void hci_cc_role_discovery(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_role_discovery *rp = (void *) skb->data; + struct hci_rp_role_discovery *rp = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; hci_dev_lock(hdev); @@ -115,17 +176,20 @@ static void hci_cc_role_discovery(struct hci_dev *hdev, struct sk_buff *skb) conn->role = rp->role; hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_read_link_policy(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_link_policy *rp = (void *) skb->data; + struct hci_rp_read_link_policy *rp = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; hci_dev_lock(hdev); @@ -134,22 +198,25 @@ static void hci_cc_read_link_policy(struct hci_dev *hdev, struct sk_buff *skb) conn->link_policy = __le16_to_cpu(rp->policy); hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_write_link_policy(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_write_link_policy *rp = (void *) skb->data; + struct hci_rp_write_link_policy *rp = data; struct hci_conn *conn; void *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY); if (!sent) - return; + return rp->status; hci_dev_lock(hdev); @@ -158,49 +225,55 @@ static void hci_cc_write_link_policy(struct hci_dev *hdev, struct sk_buff *skb) conn->link_policy = get_unaligned_le16(sent + 2); hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_read_def_link_policy(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_def_link_policy *rp = (void *) skb->data; + struct hci_rp_read_def_link_policy *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; hdev->link_policy = __le16_to_cpu(rp->policy); + + return rp->status; } -static void hci_cc_write_def_link_policy(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; void *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY); if (!sent) - return; + return rp->status; hdev->link_policy = get_unaligned_le16(sent); + + return rp->status; } -static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); clear_bit(HCI_RESET, &hdev->flags); - if (status) - return; + if (rp->status) + return rp->status; /* Reset all non-persistent flags */ hci_dev_clear_volatile_flags(hdev); @@ -220,92 +293,109 @@ static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb) hdev->ssp_debug_mode = 0; - hci_bdaddr_list_clear(&hdev->le_white_list); + hci_bdaddr_list_clear(&hdev->le_accept_list); + hci_bdaddr_list_clear(&hdev->le_resolv_list); + + return rp->status; } -static void hci_cc_read_stored_link_key(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_stored_link_key *rp = (void *)skb->data; + struct hci_rp_read_stored_link_key *rp = data; struct hci_cp_read_stored_link_key *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY); if (!sent) - return; + return rp->status; if (!rp->status && sent->read_all == 0x01) { - hdev->stored_max_keys = rp->max_keys; - hdev->stored_num_keys = rp->num_keys; + hdev->stored_max_keys = le16_to_cpu(rp->max_keys); + hdev->stored_num_keys = le16_to_cpu(rp->num_keys); } + + return rp->status; } -static void hci_cc_delete_stored_link_key(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_delete_stored_link_key *rp = (void *)skb->data; + struct hci_rp_delete_stored_link_key *rp = data; + u16 num_keys; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; - if (rp->num_keys <= hdev->stored_num_keys) - hdev->stored_num_keys -= rp->num_keys; + num_keys = le16_to_cpu(rp->num_keys); + + if (num_keys <= hdev->stored_num_keys) + hdev->stored_num_keys -= num_keys; else hdev->stored_num_keys = 0; + + return rp->status; } -static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; void *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME); if (!sent) - return; + return rp->status; hci_dev_lock(hdev); if (hci_dev_test_flag(hdev, HCI_MGMT)) - mgmt_set_local_name_complete(hdev, sent, status); - else if (!status) + mgmt_set_local_name_complete(hdev, sent, rp->status); + else if (!rp->status) memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_local_name *rp = (void *) skb->data; + struct hci_rp_read_local_name *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; if (hci_dev_test_flag(hdev, HCI_SETUP) || hci_dev_test_flag(hdev, HCI_CONFIG)) memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH); + + return rp->status; } -static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; void *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE); if (!sent) - return; + return rp->status; hci_dev_lock(hdev); - if (!status) { + if (!rp->status) { __u8 param = *((__u8 *) sent); if (param == AUTH_ENABLED) @@ -315,25 +405,28 @@ static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb) } if (hci_dev_test_flag(hdev, HCI_MGMT)) - mgmt_auth_enable_complete(hdev, status); + mgmt_auth_enable_complete(hdev, rp->status); hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; __u8 param; void *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE); if (!sent) - return; + return rp->status; param = *((__u8 *) sent); @@ -341,25 +434,28 @@ static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb) set_bit(HCI_ENCRYPT, &hdev->flags); else clear_bit(HCI_ENCRYPT, &hdev->flags); + + return rp->status; } -static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; __u8 param; void *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE); if (!sent) - return; + return rp->status; param = *((__u8 *) sent); hci_dev_lock(hdev); - if (status) { + if (rp->status) { hdev->discov_timeout = 0; goto done; } @@ -376,135 +472,178 @@ static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb) done: hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_read_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_class_of_dev *rp = (void *) skb->data; + struct hci_ev_status *rp = data; + struct hci_cp_set_event_filter *cp; + void *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; + + sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT); + if (!sent) + return rp->status; + + cp = (struct hci_cp_set_event_filter *)sent; + + if (cp->flt_type == HCI_FLT_CLEAR_ALL) + hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); + else + hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); + + return rp->status; +} + +static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_read_class_of_dev *rp = data; + + if (WARN_ON(!hdev)) + return HCI_ERROR_UNSPECIFIED; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; memcpy(hdev->dev_class, rp->dev_class, 3); - BT_DBG("%s class 0x%.2x%.2x%.2x", hdev->name, - hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); + bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2], + hdev->dev_class[1], hdev->dev_class[0]); + + return rp->status; } -static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; void *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV); if (!sent) - return; + return rp->status; hci_dev_lock(hdev); - if (status == 0) + if (!rp->status) memcpy(hdev->dev_class, sent, 3); if (hci_dev_test_flag(hdev, HCI_MGMT)) - mgmt_set_class_of_dev_complete(hdev, sent, status); + mgmt_set_class_of_dev_complete(hdev, sent, rp->status); hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_read_voice_setting(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_voice_setting *rp = (void *) skb->data; + struct hci_rp_read_voice_setting *rp = data; __u16 setting; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; setting = __le16_to_cpu(rp->voice_setting); if (hdev->voice_setting == setting) - return; + return rp->status; hdev->voice_setting = setting; - BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting); + bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); if (hdev->notify) hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); + + return rp->status; } -static void hci_cc_write_voice_setting(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; __u16 setting; void *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING); if (!sent) - return; + return rp->status; setting = get_unaligned_le16(sent); if (hdev->voice_setting == setting) - return; + return rp->status; hdev->voice_setting = setting; - BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting); + bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); if (hdev->notify) hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); + + return rp->status; } -static void hci_cc_read_num_supported_iac(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_num_supported_iac *rp = (void *) skb->data; + struct hci_rp_read_num_supported_iac *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; hdev->num_iac = rp->num_iac; - BT_DBG("%s num iac %d", hdev->name, hdev->num_iac); + bt_dev_dbg(hdev, "num iac %d", hdev->num_iac); + + return rp->status; } -static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; struct hci_cp_write_ssp_mode *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE); if (!sent) - return; + return rp->status; hci_dev_lock(hdev); - if (!status) { + if (!rp->status) { if (sent->mode) hdev->features[1][0] |= LMP_HOST_SSP; else hdev->features[1][0] &= ~LMP_HOST_SSP; } - if (hci_dev_test_flag(hdev, HCI_MGMT)) - mgmt_ssp_enable_complete(hdev, sent->mode, status); - else if (!status) { + if (!rp->status) { if (sent->mode) hci_dev_set_flag(hdev, HCI_SSP_ENABLED); else @@ -512,29 +651,32 @@ static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb) } hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - u8 status = *((u8 *) skb->data); + struct hci_ev_status *rp = data; struct hci_cp_write_sc_support *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT); if (!sent) - return; + return rp->status; hci_dev_lock(hdev); - if (!status) { + if (!rp->status) { if (sent->support) hdev->features[1][0] |= LMP_HOST_SC; else hdev->features[1][0] &= ~LMP_HOST_SC; } - if (!hci_dev_test_flag(hdev, HCI_MGMT) && !status) { + if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) { if (sent->support) hci_dev_set_flag(hdev, HCI_SC_ENABLED); else @@ -542,16 +684,19 @@ static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb) } hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_local_version *rp = (void *) skb->data; + struct hci_rp_read_local_version *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; if (hci_dev_test_flag(hdev, HCI_SETUP) || hci_dev_test_flag(hdev, HCI_CONFIG)) { @@ -561,32 +706,154 @@ static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb) hdev->manufacturer = __le16_to_cpu(rp->manufacturer); hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver); } + + return rp->status; } -static void hci_cc_read_local_commands(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_local_commands *rp = (void *) skb->data; + struct hci_rp_read_enc_key_size *rp = data; + struct hci_conn *conn; + u16 handle; + u8 status = rp->status; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); + + handle = le16_to_cpu(rp->handle); + + hci_dev_lock(hdev); + + conn = hci_conn_hash_lookup_handle(hdev, handle); + if (!conn) { + status = 0xFF; + goto done; + } + + /* While unexpected, the read_enc_key_size command may fail. The most + * secure approach is to then assume the key size is 0 to force a + * disconnection. + */ + if (status) { + bt_dev_err(hdev, "failed to read key size for handle %u", + handle); + conn->enc_key_size = 0; + } else { + u8 *key_enc_size = hci_conn_key_enc_size(conn); + + conn->enc_key_size = rp->key_size; + status = 0; + + /* Attempt to check if the key size is too small or if it has + * been downgraded from the last time it was stored as part of + * the link_key. + */ + if (conn->enc_key_size < hdev->min_enc_key_size || + (key_enc_size && conn->enc_key_size < *key_enc_size)) { + /* As slave role, the conn->state has been set to + * BT_CONNECTED and l2cap conn req might not be received + * yet, at this moment the l2cap layer almost does + * nothing with the non-zero status. + * So we also clear encrypt related bits, and then the + * handler of l2cap conn req will get the right secure + * state at a later time. + */ + status = HCI_ERROR_AUTH_FAILURE; + clear_bit(HCI_CONN_ENCRYPT, &conn->flags); + clear_bit(HCI_CONN_AES_CCM, &conn->flags); + } + + /* Update the key encryption size with the connection one */ + if (key_enc_size && *key_enc_size != conn->enc_key_size) + *key_enc_size = conn->enc_key_size; + } + + hci_encrypt_cfm(conn, status); + +done: + hci_dev_unlock(hdev); + + return status; +} + +static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_read_local_commands *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; if (hci_dev_test_flag(hdev, HCI_SETUP) || hci_dev_test_flag(hdev, HCI_CONFIG)) memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); + + return rp->status; } -static void hci_cc_read_local_features(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_local_features *rp = (void *) skb->data; + struct hci_rp_read_auth_payload_to *rp = data; + struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; + + hci_dev_lock(hdev); + + conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); + if (conn) + conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); + + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_write_auth_payload_to *rp = data; + struct hci_conn *conn; + void *sent; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); + if (!sent) + return rp->status; + + hci_dev_lock(hdev); + + conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); + if (!conn) { + rp->status = 0xff; + goto unlock; + } + + if (!rp->status) + conn->auth_payload_timeout = get_unaligned_le16(sent + 2); + +unlock: + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_read_local_features *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; memcpy(hdev->features, rp->features, 8); @@ -626,178 +893,191 @@ static void hci_cc_read_local_features(struct hci_dev *hdev, if (hdev->features[0][5] & LMP_EDR_3S_ESCO) hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); + + return rp->status; } -static void hci_cc_read_local_ext_features(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_local_ext_features *rp = (void *) skb->data; + struct hci_rp_read_local_ext_features *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; - if (hdev->max_page < rp->max_page) - hdev->max_page = rp->max_page; + if (hdev->max_page < rp->max_page) { + if (hci_test_quirk(hdev, + HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2)) + bt_dev_warn(hdev, "broken local ext features page 2"); + else + hdev->max_page = rp->max_page; + } if (rp->page < HCI_MAX_PAGES) memcpy(hdev->features[rp->page], rp->features, 8); -} - -static void hci_cc_read_flow_control_mode(struct hci_dev *hdev, - struct sk_buff *skb) -{ - struct hci_rp_read_flow_control_mode *rp = (void *) skb->data; - - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); - - if (rp->status) - return; - hdev->flow_ctl_mode = rp->mode; + return rp->status; } -static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_buffer_size *rp = (void *) skb->data; + struct hci_rp_read_buffer_size *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); hdev->sco_mtu = rp->sco_mtu; hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); - if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { + if (hci_test_quirk(hdev, HCI_QUIRK_FIXUP_BUFFER_SIZE)) { hdev->sco_mtu = 64; hdev->sco_pkts = 8; } + if (!read_voice_setting_capable(hdev)) + hdev->sco_pkts = 0; + hdev->acl_cnt = hdev->acl_pkts; hdev->sco_cnt = hdev->sco_pkts; BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); + + if (!hdev->acl_mtu || !hdev->acl_pkts) + return HCI_ERROR_INVALID_PARAMETERS; + + return rp->status; } -static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_bd_addr *rp = (void *) skb->data; + struct hci_rp_read_bd_addr *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; if (test_bit(HCI_INIT, &hdev->flags)) bacpy(&hdev->bdaddr, &rp->bdaddr); if (hci_dev_test_flag(hdev, HCI_SETUP)) bacpy(&hdev->setup_addr, &rp->bdaddr); + + return rp->status; } -static void hci_cc_read_page_scan_activity(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_page_scan_activity *rp = (void *) skb->data; + struct hci_rp_read_local_pairing_opts *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; + + if (hci_dev_test_flag(hdev, HCI_SETUP) || + hci_dev_test_flag(hdev, HCI_CONFIG)) { + hdev->pairing_opts = rp->pairing_opts; + hdev->max_enc_key_size = rp->max_key_size; + } + + return rp->status; +} + +static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_read_page_scan_activity *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; if (test_bit(HCI_INIT, &hdev->flags)) { hdev->page_scan_interval = __le16_to_cpu(rp->interval); hdev->page_scan_window = __le16_to_cpu(rp->window); } + + return rp->status; } -static void hci_cc_write_page_scan_activity(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - u8 status = *((u8 *) skb->data); + struct hci_ev_status *rp = data; struct hci_cp_write_page_scan_activity *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); if (!sent) - return; + return rp->status; hdev->page_scan_interval = __le16_to_cpu(sent->interval); hdev->page_scan_window = __le16_to_cpu(sent->window); + + return rp->status; } -static void hci_cc_read_page_scan_type(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_page_scan_type *rp = (void *) skb->data; + struct hci_rp_read_page_scan_type *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; if (test_bit(HCI_INIT, &hdev->flags)) hdev->page_scan_type = rp->type; + + return rp->status; } -static void hci_cc_write_page_scan_type(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - u8 status = *((u8 *) skb->data); + struct hci_ev_status *rp = data; u8 *type; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); if (type) hdev->page_scan_type = *type; -} - -static void hci_cc_read_data_block_size(struct hci_dev *hdev, - struct sk_buff *skb) -{ - struct hci_rp_read_data_block_size *rp = (void *) skb->data; - - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); - - if (rp->status) - return; - - hdev->block_mtu = __le16_to_cpu(rp->max_acl_len); - hdev->block_len = __le16_to_cpu(rp->block_len); - hdev->num_blocks = __le16_to_cpu(rp->num_blocks); - - hdev->block_cnt = hdev->num_blocks; - BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu, - hdev->block_cnt, hdev->block_len); + return rp->status; } -static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_clock *rp = (void *) skb->data; + struct hci_rp_read_clock *rp = data; struct hci_cp_read_clock *cp; struct hci_conn *conn; - BT_DBG("%s", hdev->name); - - if (skb->len < sizeof(*rp)) - return; + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; hci_dev_lock(hdev); @@ -818,50 +1098,67 @@ static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb) unlock: hci_dev_unlock(hdev); + return rp->status; } -static void hci_cc_read_local_amp_info(struct hci_dev *hdev, +static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_rp_read_local_amp_info *rp = (void *) skb->data; + struct hci_rp_read_inq_rsp_tx_power *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; - hdev->amp_status = rp->amp_status; - hdev->amp_total_bw = __le32_to_cpu(rp->total_bw); - hdev->amp_max_bw = __le32_to_cpu(rp->max_bw); - hdev->amp_min_latency = __le32_to_cpu(rp->min_latency); - hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu); - hdev->amp_type = rp->amp_type; - hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap); - hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size); - hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to); - hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to); + hdev->inq_tx_power = rp->tx_power; + + return rp->status; } -static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_inq_rsp_tx_power *rp = (void *) skb->data; + struct hci_rp_read_def_err_data_reporting *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; - hdev->inq_tx_power = rp->tx_power; + hdev->err_data_reporting = rp->err_data_reporting; + + return rp->status; } -static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_pin_code_reply *rp = (void *) skb->data; + struct hci_ev_status *rp = data; + struct hci_cp_write_def_err_data_reporting *cp; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); + if (!cp) + return rp->status; + + hdev->err_data_reporting = cp->err_data_reporting; + + return rp->status; +} + +static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_pin_code_reply *rp = data; struct hci_cp_pin_code_reply *cp; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); hci_dev_lock(hdev); @@ -881,13 +1178,15 @@ static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb) unlock: hci_dev_unlock(hdev); + return rp->status; } -static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_pin_code_neg_reply *rp = (void *) skb->data; + struct hci_rp_pin_code_neg_reply *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); hci_dev_lock(hdev); @@ -896,17 +1195,19 @@ static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb) rp->status); hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_le_read_buffer_size(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_le_read_buffer_size *rp = (void *) skb->data; + struct hci_rp_le_read_buffer_size *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; hdev->le_mtu = __le16_to_cpu(rp->le_mtu); hdev->le_pkts = rp->le_max_pkt; @@ -914,39 +1215,49 @@ static void hci_cc_le_read_buffer_size(struct hci_dev *hdev, hdev->le_cnt = hdev->le_pkts; BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); + + if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) + return HCI_ERROR_INVALID_PARAMETERS; + + return rp->status; } -static void hci_cc_le_read_local_features(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_le_read_local_features *rp = (void *) skb->data; + struct hci_rp_le_read_local_features *rp = data; BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); if (rp->status) - return; + return rp->status; memcpy(hdev->le_features, rp->features, 8); + + return rp->status; } -static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_le_read_adv_tx_power *rp = (void *) skb->data; + struct hci_rp_le_read_adv_tx_power *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; hdev->adv_tx_power = rp->tx_power; + + return rp->status; } -static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_user_confirm_reply *rp = (void *) skb->data; + struct hci_rp_user_confirm_reply *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); hci_dev_lock(hdev); @@ -955,14 +1266,16 @@ static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb) rp->status); hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_user_confirm_reply *rp = (void *) skb->data; + struct hci_rp_user_confirm_reply *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); hci_dev_lock(hdev); @@ -971,13 +1284,16 @@ static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, ACL_LINK, 0, rp->status); hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_user_confirm_reply *rp = (void *) skb->data; + struct hci_rp_user_confirm_reply *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); hci_dev_lock(hdev); @@ -986,14 +1302,16 @@ static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb) 0, rp->status); hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_user_confirm_reply *rp = (void *) skb->data; + struct hci_rp_user_confirm_reply *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); hci_dev_lock(hdev); @@ -1002,57 +1320,239 @@ static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, ACL_LINK, 0, rp->status); hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_read_local_oob_data(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_local_oob_data *rp = (void *) skb->data; + struct hci_rp_read_local_oob_data *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + return rp->status; } -static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data; + struct hci_rp_read_local_oob_ext_data *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + return rp->status; } -static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; bdaddr_t *sent; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); if (!sent) - return; + return rp->status; hci_dev_lock(hdev); bacpy(&hdev->random_addr, sent); + if (!bacmp(&hdev->rpa, sent)) { + hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); + queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, + secs_to_jiffies(hdev->rpa_timeout)); + } + hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 *sent, status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; + struct hci_cp_le_set_default_phy *cp; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; + + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); + if (!cp) + return rp->status; + + hci_dev_lock(hdev); + + hdev->le_tx_def_phys = cp->tx_phys; + hdev->le_rx_def_phys = cp->rx_phys; + + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_status *rp = data; + struct hci_cp_le_set_adv_set_rand_addr *cp; + struct adv_info *adv; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); + /* Update only in case the adv instance since handle 0x00 shall be using + * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and + * non-extended adverting. + */ + if (!cp || !cp->handle) + return rp->status; + + hci_dev_lock(hdev); + + adv = hci_find_adv_instance(hdev, cp->handle); + if (adv) { + bacpy(&adv->random_addr, &cp->bdaddr); + if (!bacmp(&hdev->rpa, &cp->bdaddr)) { + adv->rpa_expired = false; + queue_delayed_work(hdev->workqueue, + &adv->rpa_expired_cb, + secs_to_jiffies(hdev->rpa_timeout)); + } + } + + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_status *rp = data; + u8 *instance; + int err; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); + if (!instance) + return rp->status; + + hci_dev_lock(hdev); + + err = hci_remove_adv_instance(hdev, *instance); + if (!err) + mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, + *instance); + + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_status *rp = data; + struct adv_info *adv, *n; + int err; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) + return rp->status; + + hci_dev_lock(hdev); + + list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { + u8 instance = adv->instance; + + err = hci_remove_adv_instance(hdev, instance); + if (!err) + mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), + hdev, instance); + } + + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_le_read_transmit_power *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + hdev->min_le_tx_power = rp->min_le_tx_power; + hdev->max_le_tx_power = rp->max_le_tx_power; + + return rp->status; +} + +static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_status *rp = data; + struct hci_cp_le_set_privacy_mode *cp; + struct hci_conn_params *params; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); + if (!cp) + return rp->status; + + hci_dev_lock(hdev); + + params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); + if (params) + WRITE_ONCE(params->privacy_mode, cp->mode); + + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_status *rp = data; + __u8 *sent; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); if (!sent) - return; + return rp->status; hci_dev_lock(hdev); @@ -1074,27 +1574,128 @@ static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb) } hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_cp_le_set_ext_adv_enable *cp; + struct hci_cp_ext_adv_set *set; + struct adv_info *adv = NULL, *n; + struct hci_ev_status *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); + if (!cp) + return rp->status; + + set = (void *)cp->data; + + hci_dev_lock(hdev); + + if (cp->num_of_sets) + adv = hci_find_adv_instance(hdev, set->handle); + + if (cp->enable) { + struct hci_conn *conn; + + hci_dev_set_flag(hdev, HCI_LE_ADV); + + if (adv) + adv->enabled = true; + else if (!set->handle) + hci_dev_set_flag(hdev, HCI_LE_ADV_0); + + conn = hci_lookup_le_connect(hdev); + if (conn) + queue_delayed_work(hdev->workqueue, + &conn->le_conn_timeout, + conn->conn_timeout); + } else { + if (cp->num_of_sets) { + if (adv) + adv->enabled = false; + else if (!set->handle) + hci_dev_clear_flag(hdev, HCI_LE_ADV_0); + + /* If just one instance was disabled check if there are + * any other instance enabled before clearing HCI_LE_ADV + */ + list_for_each_entry_safe(adv, n, &hdev->adv_instances, + list) { + if (adv->enabled) + goto unlock; + } + } else { + /* All instances shall be considered disabled */ + list_for_each_entry_safe(adv, n, &hdev->adv_instances, + list) + adv->enabled = false; + } + + hci_dev_clear_flag(hdev, HCI_LE_ADV); + } + +unlock: + hci_dev_unlock(hdev); + return rp->status; +} + +static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { struct hci_cp_le_set_scan_param *cp; - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); if (!cp) - return; + return rp->status; hci_dev_lock(hdev); hdev->le_scan_type = cp->type; hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_cp_le_set_ext_scan_params *cp; + struct hci_ev_status *rp = data; + struct hci_cp_le_scan_phy_params *phy_param; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); + if (!cp) + return rp->status; + + phy_param = (void *)cp->data; + + hci_dev_lock(hdev); + + hdev->le_scan_type = phy_param->type; + + hci_dev_unlock(hdev); + + return rp->status; } static bool has_pending_adv_report(struct hci_dev *hdev) @@ -1118,6 +1719,9 @@ static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, { struct discovery_state *d = &hdev->discovery; + if (len > max_adv_len(hdev)) + return; + bacpy(&d->last_adv_addr, bdaddr); d->last_adv_addr_type = bdaddr_type; d->last_adv_rssi = rssi; @@ -1126,28 +1730,17 @@ static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, d->last_adv_data_len = len; } -static void hci_cc_le_set_scan_enable(struct hci_dev *hdev, - struct sk_buff *skb) +static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) { - struct hci_cp_le_set_scan_enable *cp; - __u8 status = *((__u8 *) skb->data); - - BT_DBG("%s status 0x%2.2x", hdev->name, status); - - if (status) - return; - - cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); - if (!cp) - return; - hci_dev_lock(hdev); - switch (cp->enable) { + switch (enable) { case LE_SCAN_ENABLE: hci_dev_set_flag(hdev, HCI_LE_SCAN); - if (hdev->le_scan_type == LE_SCAN_ACTIVE) + if (hdev->le_scan_type == LE_SCAN_ACTIVE) { clear_pending_adv_report(hdev); + hci_discovery_set_state(hdev, DISCOVERY_FINDING); + } break; case LE_SCAN_DISABLE: @@ -1162,7 +1755,7 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev, d->last_adv_addr_type, NULL, d->last_adv_rssi, d->last_adv_flags, d->last_adv_data, - d->last_adv_data_len, NULL, 0); + d->last_adv_data_len, NULL, 0, 0); } /* Cancel this timer so that we don't try to disable scanning @@ -1174,167 +1767,349 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev, /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we * interrupted scanning due to a connect request. Mark - * therefore discovery as stopped. If this was not - * because of a connect request advertising might have - * been disabled because of active scanning, so - * re-enable it again if necessary. + * therefore discovery as stopped. */ if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) hci_discovery_set_state(hdev, DISCOVERY_STOPPED); else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && hdev->discovery.state == DISCOVERY_FINDING) - hci_req_reenable_advertising(hdev); + queue_work(hdev->workqueue, &hdev->reenable_adv_work); break; default: - BT_ERR("Used reserved LE_Scan_Enable param %d", cp->enable); + bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", + enable); break; } hci_dev_unlock(hdev); } -static void hci_cc_le_read_white_list_size(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_le_read_white_list_size *rp = (void *) skb->data; + struct hci_cp_le_set_scan_enable *cp; + struct hci_ev_status *rp = data; - BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; + + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); + if (!cp) + return rp->status; + + le_set_scan_enable_complete(hdev, cp->enable); - hdev->le_white_list_size = rp->size; + return rp->status; } -static void hci_cc_le_clear_white_list(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_cp_le_set_ext_scan_enable *cp; + struct hci_ev_status *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; - hci_bdaddr_list_clear(&hdev->le_white_list); + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); + if (!cp) + return rp->status; + + le_set_scan_enable_complete(hdev, cp->enable); + + return rp->status; } -static void hci_cc_le_add_to_white_list(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_cp_le_add_to_white_list *sent; - __u8 status = *((__u8 *) skb->data); + struct hci_rp_le_read_num_supported_adv_sets *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, + rp->num_of_sets); - if (status) - return; + if (rp->status) + return rp->status; - sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST); - if (!sent) - return; + hdev->le_num_of_adv_sets = rp->num_of_sets; - hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr, - sent->bdaddr_type); + return rp->status; } -static void hci_cc_le_del_from_white_list(struct hci_dev *hdev, +static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_cp_le_del_from_white_list *sent; - __u8 status = *((__u8 *) skb->data); + struct hci_rp_le_read_accept_list_size *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); - if (status) - return; + if (rp->status) + return rp->status; + + hdev->le_accept_list_size = rp->size; + + return rp->status; +} + +static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_status *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + hci_dev_lock(hdev); + hci_bdaddr_list_clear(&hdev->le_accept_list); + hci_dev_unlock(hdev); + + return rp->status; +} - sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST); +static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_cp_le_add_to_accept_list *sent; + struct hci_ev_status *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); if (!sent) - return; + return rp->status; - hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr, + hci_dev_lock(hdev); + hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, sent->bdaddr_type); + hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_le_read_supported_states(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_le_read_supported_states *rp = (void *) skb->data; + struct hci_cp_le_del_from_accept_list *sent; + struct hci_ev_status *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; + + sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); + if (!sent) + return rp->status; + + hci_dev_lock(hdev); + hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, + sent->bdaddr_type); + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_le_read_supported_states *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; memcpy(hdev->le_states, rp->le_states, 8); + + return rp->status; } -static void hci_cc_le_read_def_data_len(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_le_read_def_data_len *rp = (void *) skb->data; + struct hci_rp_le_read_def_data_len *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); + + return rp->status; } -static void hci_cc_le_write_def_data_len(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { struct hci_cp_le_write_def_data_len *sent; - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); if (!sent) - return; + return rp->status; hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); + + return rp->status; } -static void hci_cc_le_read_max_data_len(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_le_read_max_data_len *rp = (void *) skb->data; + struct hci_cp_le_add_to_resolv_list *sent; + struct hci_ev_status *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; + + sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); + if (!sent) + return rp->status; + + hci_dev_lock(hdev); + hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, + sent->bdaddr_type, sent->peer_irk, + sent->local_irk); + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_cp_le_del_from_resolv_list *sent; + struct hci_ev_status *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); + if (!sent) + return rp->status; + + hci_dev_lock(hdev); + hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, + sent->bdaddr_type); + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_status *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + hci_dev_lock(hdev); + hci_bdaddr_list_clear(&hdev->le_resolv_list); + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_le_read_resolv_list_size *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); + + if (rp->status) + return rp->status; + + hdev->le_resolv_list_size = rp->size; + + return rp->status; +} + +static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_status *rp = data; + __u8 *sent; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; + + sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); + if (!sent) + return rp->status; + + hci_dev_lock(hdev); + + if (*sent) + hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); + else + hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); + + hci_dev_unlock(hdev); + + return rp->status; +} + +static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_le_read_max_data_len *rp = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); + + if (rp->status) + return rp->status; hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); + + return rp->status; } -static void hci_cc_write_le_host_supported(struct hci_dev *hdev, - struct sk_buff *skb) +static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { struct hci_cp_write_le_host_supported *sent; - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); if (!sent) - return; + return rp->status; hci_dev_lock(hdev); @@ -1353,36 +2128,42 @@ static void hci_cc_write_le_host_supported(struct hci_dev *hdev, hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { struct hci_cp_le_set_adv_param *cp; - u8 status = *((u8 *) skb->data); + struct hci_ev_status *rp = data; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); if (!cp) - return; + return rp->status; hci_dev_lock(hdev); hdev->adv_addr_type = cp->own_address_type; hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_rp_read_rssi *rp = (void *) skb->data; + struct hci_rp_read_rssi *rp = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; hci_dev_lock(hdev); @@ -1391,22 +2172,25 @@ static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb) conn->rssi = rp->rssi; hci_dev_unlock(hdev); + + return rp->status; } -static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { struct hci_cp_read_tx_power *sent; - struct hci_rp_read_tx_power *rp = (void *) skb->data; + struct hci_rp_read_tx_power *rp = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); if (rp->status) - return; + return rp->status; sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); if (!sent) - return; + return rp->status; hci_dev_lock(hdev); @@ -1425,33 +2209,36 @@ static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb) unlock: hci_dev_unlock(hdev); + return rp->status; } -static void hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, struct sk_buff *skb) +static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - u8 status = *((u8 *) skb->data); + struct hci_ev_status *rp = data; u8 *mode; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - if (status) - return; + if (rp->status) + return rp->status; mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); if (mode) hdev->ssp_debug_mode = *mode; + + return rp->status; } static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) { - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); - if (status) { - hci_conn_check_pending(hdev); + if (status) return; - } - set_bit(HCI_INQUIRY, &hdev->flags); + if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY)) + set_bit(HCI_INQUIRY, &hdev->flags); } static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) @@ -1459,7 +2246,7 @@ static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) struct hci_cp_create_conn *cp; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); if (!cp) @@ -1469,23 +2256,20 @@ static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); - BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn); + bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); if (status) { if (conn && conn->state == BT_CONNECT) { - if (status != 0x0c || conn->attempt > 2) { - conn->state = BT_CLOSED; - hci_connect_cfm(conn, status); - hci_conn_del(conn); - } else - conn->state = BT_CONNECT2; + conn->state = BT_CLOSED; + hci_connect_cfm(conn, status); + hci_conn_del(conn); } } else { if (!conn) { - conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr, - HCI_ROLE_MASTER); - if (!conn) - BT_ERR("No memory for new connection"); + conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr, + 0, HCI_ROLE_MASTER); + if (IS_ERR(conn)) + bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); } } @@ -1495,10 +2279,11 @@ static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) { struct hci_cp_add_sco *cp; - struct hci_conn *acl, *sco; + struct hci_conn *acl; + struct hci_link *link; __u16 handle; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); if (!status) return; @@ -1509,18 +2294,19 @@ static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) handle = __le16_to_cpu(cp->handle); - BT_DBG("%s handle 0x%4.4x", hdev->name, handle); + bt_dev_dbg(hdev, "handle 0x%4.4x", handle); hci_dev_lock(hdev); acl = hci_conn_hash_lookup_handle(hdev, handle); if (acl) { - sco = acl->link; - if (sco) { - sco->state = BT_CLOSED; + link = list_first_entry_or_null(&acl->link_list, + struct hci_link, list); + if (link && link->conn) { + link->conn->state = BT_CLOSED; - hci_connect_cfm(sco, status); - hci_conn_del(sco); + hci_connect_cfm(link->conn, status); + hci_conn_del(link->conn); } } @@ -1532,7 +2318,7 @@ static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) struct hci_cp_auth_requested *cp; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); if (!status) return; @@ -1559,7 +2345,7 @@ static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) struct hci_cp_set_conn_encrypt *cp; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); if (!status) return; @@ -1626,6 +2412,12 @@ static bool hci_resolve_next_name(struct hci_dev *hdev) if (list_empty(&discov->resolve)) return false; + /* We should stop if we already spent too much time resolving names. */ + if (time_after(jiffies, discov->name_resolve_timeout)) { + bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); + return false; + } + e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); if (!e) return false; @@ -1649,10 +2441,8 @@ static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, * Only those in BT_CONFIG or BT_CONNECTED states can be * considered connected. */ - if (conn && - (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) && - !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) - mgmt_device_connected(hdev, conn, 0, name, name_len); + if (conn && (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) + mgmt_device_connected(hdev, conn, name, name_len); if (discov->state == DISCOVERY_STOPPED) return; @@ -1672,13 +2462,10 @@ static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, return; list_del(&e->list); - if (name) { - e->name_state = NAME_KNOWN; - mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, - e->data.rssi, name, name_len); - } else { - e->name_state = NAME_NOT_KNOWN; - } + + e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; + mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, + name, name_len); if (hci_resolve_next_name(hdev)) return; @@ -1692,7 +2479,7 @@ static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) struct hci_cp_remote_name_req *cp; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); /* If successful wait for the name req complete event before * checking for the need to do authentication */ @@ -1735,7 +2522,7 @@ static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) struct hci_cp_read_remote_features *cp; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); if (!status) return; @@ -1762,7 +2549,7 @@ static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) struct hci_cp_read_remote_ext_features *cp; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); if (!status) return; @@ -1784,13 +2571,36 @@ static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) hci_dev_unlock(hdev); } +static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, + __u8 status) +{ + struct hci_conn *acl; + struct hci_link *link; + + bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); + + hci_dev_lock(hdev); + + acl = hci_conn_hash_lookup_handle(hdev, handle); + if (acl) { + link = list_first_entry_or_null(&acl->link_list, + struct hci_link, list); + if (link && link->conn) { + link->conn->state = BT_CLOSED; + + hci_connect_cfm(link->conn, status); + hci_conn_del(link->conn); + } + } + + hci_dev_unlock(hdev); +} + static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) { struct hci_cp_setup_sync_conn *cp; - struct hci_conn *acl, *sco; - __u16 handle; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); if (!status) return; @@ -1799,24 +2609,23 @@ static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) if (!cp) return; - handle = __le16_to_cpu(cp->handle); + hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); +} - BT_DBG("%s handle 0x%4.4x", hdev->name, handle); +static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) +{ + struct hci_cp_enhanced_setup_sync_conn *cp; - hci_dev_lock(hdev); + bt_dev_dbg(hdev, "status 0x%2.2x", status); - acl = hci_conn_hash_lookup_handle(hdev, handle); - if (acl) { - sco = acl->link; - if (sco) { - sco->state = BT_CLOSED; + if (!status) + return; - hci_connect_cfm(sco, status); - hci_conn_del(sco); - } - } + cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); + if (!cp) + return; - hci_dev_unlock(hdev); + hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); } static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) @@ -1824,7 +2633,7 @@ static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) struct hci_cp_sniff_mode *cp; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); if (!status) return; @@ -1851,7 +2660,7 @@ static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) struct hci_cp_exit_sniff_mode *cp; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); if (!status) return; @@ -1876,9 +2685,16 @@ static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) { struct hci_cp_disconnect *cp; + struct hci_conn_params *params; struct hci_conn *conn; + bool mgmt_conn; - if (!status) + bt_dev_dbg(hdev, "status 0x%2.2x", status); + + /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended + * otherwise cleanup the connection immediately. + */ + if (!status && !hdev->suspended) return; cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); @@ -1888,22 +2704,129 @@ static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) hci_dev_lock(hdev); conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); - if (conn) + if (!conn) + goto unlock; + + if (status && status != HCI_ERROR_UNKNOWN_CONN_ID) { mgmt_disconnect_failed(hdev, &conn->dst, conn->type, conn->dst_type, status); + if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { + hdev->cur_adv_instance = conn->adv_instance; + hci_enable_advertising(hdev); + } + + /* Inform sockets conn is gone before we delete it */ + hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED); + + goto done; + } + + /* During suspend, mark connection as closed immediately + * since we might not receive HCI_EV_DISCONN_COMPLETE + */ + if (hdev->suspended) + conn->state = BT_CLOSED; + + mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); + + if (conn->type == ACL_LINK) { + if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) + hci_remove_link_key(hdev, &conn->dst); + } + + params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); + if (params) { + switch (params->auto_connect) { + case HCI_AUTO_CONN_LINK_LOSS: + if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) + break; + fallthrough; + + case HCI_AUTO_CONN_DIRECT: + case HCI_AUTO_CONN_ALWAYS: + hci_pend_le_list_del_init(params); + hci_pend_le_list_add(params, &hdev->pend_le_conns); + break; + + default: + break; + } + } + + mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, + cp->reason, mgmt_conn); + + hci_disconn_cfm(conn, cp->reason); + +done: + /* If the disconnection failed for any reason, the upper layer + * does not retry to disconnect in current implementation. + * Hence, we need to do some basic cleanup here and re-enable + * advertising if necessary. + */ + hci_conn_del(conn); +unlock: hci_dev_unlock(hdev); } +static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) +{ + /* When using controller based address resolution, then the new + * address types 0x02 and 0x03 are used. These types need to be + * converted back into either public address or random address type + */ + switch (type) { + case ADDR_LE_DEV_PUBLIC_RESOLVED: + if (resolved) + *resolved = true; + return ADDR_LE_DEV_PUBLIC; + case ADDR_LE_DEV_RANDOM_RESOLVED: + if (resolved) + *resolved = true; + return ADDR_LE_DEV_RANDOM; + } + + if (resolved) + *resolved = false; + return type; +} + +static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, + u8 peer_addr_type, u8 own_address_type, + u8 filter_policy) +{ + struct hci_conn *conn; + + conn = hci_conn_hash_lookup_le(hdev, peer_addr, + peer_addr_type); + if (!conn) + return; + + own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); + + /* Store the initiator and responder address information which + * is needed for SMP. These values will not change during the + * lifetime of the connection. + */ + conn->init_addr_type = own_address_type; + if (own_address_type == ADDR_LE_DEV_RANDOM) + bacpy(&conn->init_addr, &hdev->random_addr); + else + bacpy(&conn->init_addr, &hdev->bdaddr); + + conn->resp_addr_type = peer_addr_type; + bacpy(&conn->resp_addr, peer_addr); +} + static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) { struct hci_cp_le_create_conn *cp; - struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); /* All connection failure handling is taken care of by the - * hci_le_conn_failed function which is triggered by the HCI + * hci_conn_failed function which is triggered by the HCI * request completion callbacks used for connecting. */ if (status) @@ -1915,35 +2838,34 @@ static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) hci_dev_lock(hdev); - conn = hci_conn_hash_lookup_le(hdev, &cp->peer_addr, - cp->peer_addr_type); - if (!conn) - goto unlock; + cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, + cp->own_address_type, cp->filter_policy); - /* Store the initiator and responder address information which - * is needed for SMP. These values will not change during the - * lifetime of the connection. - */ - conn->init_addr_type = cp->own_address_type; - if (cp->own_address_type == ADDR_LE_DEV_RANDOM) - bacpy(&conn->init_addr, &hdev->random_addr); - else - bacpy(&conn->init_addr, &hdev->bdaddr); + hci_dev_unlock(hdev); +} + +static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) +{ + struct hci_cp_le_ext_create_conn *cp; - conn->resp_addr_type = cp->peer_addr_type; - bacpy(&conn->resp_addr, &cp->peer_addr); + bt_dev_dbg(hdev, "status 0x%2.2x", status); - /* We don't want the connection attempt to stick around - * indefinitely since LE doesn't have a page timeout concept - * like BR/EDR. Set a timer for any connection that doesn't use - * the white list for connecting. + /* All connection failure handling is taken care of by the + * hci_conn_failed function which is triggered by the HCI + * request completion callbacks used for connecting. */ - if (cp->filter_policy == HCI_LE_USE_PEER_ADDR) - queue_delayed_work(conn->hdev->workqueue, - &conn->le_conn_timeout, - conn->conn_timeout); + if (status) + return; + + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); + if (!cp) + return; + + hci_dev_lock(hdev); + + cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, + cp->own_addr_type, cp->filter_policy); -unlock: hci_dev_unlock(hdev); } @@ -1952,7 +2874,7 @@ static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) struct hci_cp_le_read_remote_features *cp; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); if (!status) return; @@ -1964,12 +2886,8 @@ static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) hci_dev_lock(hdev); conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); - if (conn) { - if (conn->state == BT_CONFIG) { - hci_connect_cfm(conn, status); - hci_conn_drop(conn); - } - } + if (conn && conn->state == BT_CONFIG) + hci_connect_cfm(conn, status); hci_dev_unlock(hdev); } @@ -1979,7 +2897,7 @@ static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) struct hci_cp_le_start_enc *cp; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, status); + bt_dev_dbg(hdev, "status 0x%2.2x", status); if (!status) return; @@ -2027,15 +2945,14 @@ static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) hci_dev_unlock(hdev); } -static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - __u8 status = *((__u8 *) skb->data); + struct hci_ev_status *ev = data; struct discovery_state *discov = &hdev->discovery; struct inquiry_entry *e; - BT_DBG("%s status 0x%2.2x", hdev->name, status); - - hci_conn_check_pending(hdev); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) return; @@ -2060,7 +2977,7 @@ static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) * state to indicate completion. */ if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || - !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) + !hci_test_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY)) hci_discovery_set_state(hdev, DISCOVERY_STOPPED); goto unlock; } @@ -2069,6 +2986,7 @@ static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) if (e && hci_resolve_name(hdev, e) == 0) { e->name_state = NAME_PENDING; hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); + discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; } else { /* When BR/EDR inquiry is active and no LE scanning is in * progress, then change discovery state to indicate completion. @@ -2078,7 +2996,7 @@ static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) * state to indicate completion. */ if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || - !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) + !hci_test_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY)) hci_discovery_set_state(hdev, DISCOVERY_STOPPED); } @@ -2086,15 +3004,20 @@ unlock: hci_dev_unlock(hdev); } -static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, + struct sk_buff *skb) { + struct hci_ev_inquiry_result *ev = edata; struct inquiry_data data; - struct inquiry_info *info = (void *) (skb->data + 1); - int num_rsp = *((__u8 *) skb->data); + int i; + + if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, + flex_array_size(ev, info, ev->num))) + return; - BT_DBG("%s num_rsp %d", hdev->name, num_rsp); + bt_dev_dbg(hdev, "num %d", ev->num); - if (!num_rsp) + if (!ev->num) return; if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) @@ -2102,7 +3025,8 @@ static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_dev_lock(hdev); - for (; num_rsp; num_rsp--, info++) { + for (i = 0; i < ev->num; i++) { + struct inquiry_info *info = &ev->info[i]; u32 flags; bacpy(&data.bdaddr, &info->bdaddr); @@ -2118,35 +3042,117 @@ static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb) mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, info->dev_class, HCI_RSSI_INVALID, - flags, NULL, 0, NULL, 0); + flags, NULL, 0, NULL, 0, 0); } hci_dev_unlock(hdev); } -static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) +static int hci_read_enc_key_size(struct hci_dev *hdev, struct hci_conn *conn) { - struct hci_ev_conn_complete *ev = (void *) skb->data; + struct hci_cp_read_enc_key_size cp; + u8 *key_enc_size = hci_conn_key_enc_size(conn); + + if (!read_key_size_capable(hdev)) { + conn->enc_key_size = HCI_LINK_KEY_SIZE; + return -EOPNOTSUPP; + } + + bt_dev_dbg(hdev, "hcon %p", conn); + + memset(&cp, 0, sizeof(cp)); + cp.handle = cpu_to_le16(conn->handle); + + /* If the key enc_size is already known, use it as conn->enc_key_size, + * otherwise use hdev->min_enc_key_size so the likes of + * l2cap_check_enc_key_size don't fail while waiting for + * HCI_OP_READ_ENC_KEY_SIZE response. + */ + if (key_enc_size && *key_enc_size) + conn->enc_key_size = *key_enc_size; + else + conn->enc_key_size = hdev->min_enc_key_size; + + return hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp); +} + +static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_conn_complete *ev = data; struct hci_conn *conn; + u8 status = ev->status; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, "status 0x%2.2x", status); hci_dev_lock(hdev); + /* Check for existing connection: + * + * 1. If it doesn't exist then it must be receiver/slave role. + * 2. If it does exist confirm that it is connecting/BT_CONNECT in case + * of initiator/master role since there could be a collision where + * either side is attempting to connect or something like a fuzzing + * testing is trying to play tricks to destroy the hcon object before + * it even attempts to connect (e.g. hcon->state == BT_OPEN). + */ conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); - if (!conn) { - if (ev->link_type != SCO_LINK) + if (!conn || + (conn->role == HCI_ROLE_MASTER && conn->state != BT_CONNECT)) { + /* In case of error status and there is no connection pending + * just unlock as there is nothing to cleanup. + */ + if (ev->status) goto unlock; - conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); - if (!conn) - goto unlock; + /* Connection may not exist if auto-connected. Check the bredr + * allowlist to see if this device is allowed to auto connect. + * If link is an ACL type, create a connection class + * automatically. + * + * Auto-connect will only occur if the event filter is + * programmed with a given address. Right now, event filter is + * only used during suspend. + */ + if (ev->link_type == ACL_LINK && + hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, + &ev->bdaddr, + BDADDR_BREDR)) { + conn = hci_conn_add_unset(hdev, ev->link_type, + &ev->bdaddr, 0, + HCI_ROLE_SLAVE); + if (IS_ERR(conn)) { + bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); + goto unlock; + } + } else { + if (ev->link_type != SCO_LINK) + goto unlock; - conn->type = SCO_LINK; + conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, + &ev->bdaddr); + if (!conn) + goto unlock; + + conn->type = SCO_LINK; + } } - if (!ev->status) { - conn->handle = __le16_to_cpu(ev->handle); + /* The HCI_Connection_Complete event is only sent once per connection. + * Processing it more than once per connection can corrupt kernel memory. + * + * As the connection handle is set here for the first time, it indicates + * whether the connection is already set up. + */ + if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { + bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); + goto unlock; + } + + if (!status) { + status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); + if (status) + goto done; if (conn->type == ACL_LINK) { conn->state = BT_CONFIG; @@ -2169,6 +3175,19 @@ static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) if (test_bit(HCI_ENCRYPT, &hdev->flags)) set_bit(HCI_CONN_ENCRYPT, &conn->flags); + /* "Link key request" completed ahead of "connect request" completes */ + if (ev->encr_mode == 1 && !test_bit(HCI_CONN_ENCRYPT, &conn->flags) && + ev->link_type == ACL_LINK) { + struct link_key *key; + + key = hci_find_link_key(hdev, &ev->bdaddr); + if (key) { + set_bit(HCI_CONN_ENCRYPT, &conn->flags); + hci_read_enc_key_size(hdev, conn); + hci_encrypt_cfm(conn, ev->status); + } + } + /* Get remote features */ if (conn->type == ACL_LINK) { struct hci_cp_read_remote_features cp; @@ -2176,7 +3195,7 @@ static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, sizeof(cp), &cp); - hci_req_update_scan(hdev); + hci_update_scan(hdev); } /* Set packet type for incoming connection */ @@ -2187,26 +3206,27 @@ static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), &cp); } - } else { - conn->state = BT_CLOSED; - if (conn->type == ACL_LINK) - mgmt_connect_failed(hdev, &conn->dst, conn->type, - conn->dst_type, ev->status); } if (conn->type == ACL_LINK) hci_sco_setup(conn, ev->status); - if (ev->status) { - hci_connect_cfm(conn, ev->status); - hci_conn_del(conn); - } else if (ev->link_type != ACL_LINK) - hci_connect_cfm(conn, ev->status); +done: + if (status) { + hci_conn_failed(conn, status); + } else if (ev->link_type == SCO_LINK) { + switch (conn->setting & SCO_AIRMODE_MASK) { + case SCO_AIRMODE_CVSD: + if (hdev->notify) + hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); + break; + } + + hci_connect_cfm(conn, status); + } unlock: hci_dev_unlock(hdev); - - hci_conn_check_pending(hdev); } static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) @@ -2218,16 +3238,26 @@ static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); } -static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_conn_request_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_conn_request *ev = (void *) skb->data; + struct hci_ev_conn_request *ev = data; int mask = hdev->link_mode; struct inquiry_entry *ie; struct hci_conn *conn; __u8 flags = 0; - BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr, - ev->link_type); + bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); + + /* Reject incoming connection from device with same BD ADDR against + * CVE-2020-26555 + */ + if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { + bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", + &ev->bdaddr); + hci_reject_conn(hdev, &ev->bdaddr); + return; + } mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, &flags); @@ -2237,28 +3267,28 @@ static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb) return; } - if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr, + hci_dev_lock(hdev); + + if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, BDADDR_BREDR)) { hci_reject_conn(hdev, &ev->bdaddr); - return; + goto unlock; } - /* Require HCI_CONNECTABLE or a whitelist entry to accept the + /* Require HCI_CONNECTABLE or an accept list entry to accept the * connection. These features are only touched through mgmt so * only do the checks if HCI_MGMT is set. */ if (hci_dev_test_flag(hdev, HCI_MGMT) && !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && - !hci_bdaddr_list_lookup(&hdev->whitelist, &ev->bdaddr, - BDADDR_BREDR)) { - hci_reject_conn(hdev, &ev->bdaddr); - return; + !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, + BDADDR_BREDR)) { + hci_reject_conn(hdev, &ev->bdaddr); + goto unlock; } /* Connection accepted */ - hci_dev_lock(hdev); - ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); if (ie) memcpy(ie->data.dev_class, ev->dev_class, 3); @@ -2266,12 +3296,11 @@ static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb) conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); if (!conn) { - conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, - HCI_ROLE_SLAVE); - if (!conn) { - BT_ERR("No memory for new connection"); - hci_dev_unlock(hdev); - return; + conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, 0, + HCI_ROLE_SLAVE); + if (IS_ERR(conn)) { + bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); + goto unlock; } } @@ -2287,9 +3316,9 @@ static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb) bacpy(&cp.bdaddr, &ev->bdaddr); if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) - cp.role = 0x00; /* Become master */ + cp.role = 0x00; /* Become central */ else - cp.role = 0x01; /* Remain slave */ + cp.role = 0x01; /* Remain peripheral */ hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); } else if (!(flags & HCI_PROTO_DEFER)) { @@ -2311,6 +3340,10 @@ static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb) conn->state = BT_CONNECT2; hci_connect_cfm(conn, 0); } + + return; +unlock: + hci_dev_unlock(hdev); } static u8 hci_to_mgmt_reason(u8 err) @@ -2329,16 +3362,16 @@ static u8 hci_to_mgmt_reason(u8 err) } } -static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_disconn_complete *ev = (void *) skb->data; + struct hci_ev_disconn_complete *ev = data; u8 reason; struct hci_conn_params *params; struct hci_conn *conn; bool mgmt_connected; - u8 type; - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -2365,36 +3398,40 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) reason, mgmt_connected); if (conn->type == ACL_LINK) { - if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) + if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) hci_remove_link_key(hdev, &conn->dst); - hci_req_update_scan(hdev); + hci_update_scan(hdev); } - params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); - if (params) { - switch (params->auto_connect) { - case HCI_AUTO_CONN_LINK_LOSS: - if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) + /* Re-enable passive scanning if disconnected device is marked + * as auto-connectable. + */ + if (conn->type == LE_LINK) { + params = hci_conn_params_lookup(hdev, &conn->dst, + conn->dst_type); + if (params) { + switch (params->auto_connect) { + case HCI_AUTO_CONN_LINK_LOSS: + if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) + break; + fallthrough; + + case HCI_AUTO_CONN_DIRECT: + case HCI_AUTO_CONN_ALWAYS: + hci_pend_le_list_del_init(params); + hci_pend_le_list_add(params, + &hdev->pend_le_conns); + hci_update_passive_scan(hdev); break; - /* Fall through */ - - case HCI_AUTO_CONN_DIRECT: - case HCI_AUTO_CONN_ALWAYS: - list_del_init(¶ms->action); - list_add(¶ms->action, &hdev->pend_le_conns); - hci_update_background_scan(hdev); - break; - default: - break; + default: + break; + } } } - type = conn->type; - hci_disconn_cfm(conn, ev->reason); - hci_conn_del(conn); /* Re-enable advertising if necessary, since it might * have been disabled by the connection. From the @@ -2406,19 +3443,24 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) * or until a connection is created or until the Advertising * is timed out due to Directed Advertising." */ - if (type == LE_LINK) - hci_req_reenable_advertising(hdev); + if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { + hdev->cur_adv_instance = conn->adv_instance; + hci_enable_advertising(hdev); + } + + hci_conn_del(conn); unlock: hci_dev_unlock(hdev); } -static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_auth_complete *ev = (void *) skb->data; + struct hci_ev_auth_complete *ev = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -2428,14 +3470,8 @@ static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) if (!ev->status) { clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); - - if (!hci_conn_ssp_enabled(conn) && - test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) { - BT_INFO("re-auth of legacy device is not possible."); - } else { - set_bit(HCI_CONN_AUTH, &conn->flags); - conn->sec_level = conn->pending_sec_level; - } + set_bit(HCI_CONN_AUTH, &conn->flags); + conn->sec_level = conn->pending_sec_level; } else { if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); @@ -2444,7 +3480,6 @@ static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) } clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); - clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags); if (conn->state == BT_CONFIG) { if (!ev->status && hci_conn_ssp_enabled(conn)) { @@ -2475,7 +3510,7 @@ static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) &cp); } else { clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); - hci_encrypt_cfm(conn, ev->status, 0x00); + hci_encrypt_cfm(conn, ev->status); } } @@ -2483,14 +3518,13 @@ unlock: hci_dev_unlock(hdev); } -static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_remote_name_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_remote_name *ev = (void *) skb->data; + struct hci_ev_remote_name *ev = data; struct hci_conn *conn; - BT_DBG("%s", hdev->name); - - hci_conn_check_pending(hdev); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -2525,69 +3559,13 @@ unlock: hci_dev_unlock(hdev); } -static void read_enc_key_size_complete(struct hci_dev *hdev, u8 status, - u16 opcode, struct sk_buff *skb) +static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - const struct hci_rp_read_enc_key_size *rp; + struct hci_ev_encrypt_change *ev = data; struct hci_conn *conn; - u16 handle; - - BT_DBG("%s status 0x%02x", hdev->name, status); - - if (!skb || skb->len < sizeof(*rp)) { - BT_ERR("%s invalid HCI Read Encryption Key Size response", - hdev->name); - return; - } - rp = (void *)skb->data; - handle = le16_to_cpu(rp->handle); - - hci_dev_lock(hdev); - - conn = hci_conn_hash_lookup_handle(hdev, handle); - if (!conn) - goto unlock; - - /* If we fail to read the encryption key size, assume maximum - * (which is the same we do also when this HCI command isn't - * supported. - */ - if (rp->status) { - BT_ERR("%s failed to read key size for handle %u", hdev->name, - handle); - conn->enc_key_size = HCI_LINK_KEY_SIZE; - } else { - conn->enc_key_size = rp->key_size; - } - - if (conn->state == BT_CONFIG) { - conn->state = BT_CONNECTED; - hci_connect_cfm(conn, 0); - hci_conn_drop(conn); - } else { - u8 encrypt; - - if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) - encrypt = 0x00; - else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) - encrypt = 0x02; - else - encrypt = 0x01; - - hci_encrypt_cfm(conn, 0, encrypt); - } - -unlock: - hci_dev_unlock(hdev); -} - -static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb) -{ - struct hci_ev_encrypt_change *ev = (void *) skb->data; - struct hci_conn *conn; - - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -2618,81 +3596,78 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb) /* We should disregard the current RPA and generate a new one * whenever the encryption procedure fails. */ - if (ev->status && conn->type == LE_LINK) + if (ev->status && conn->type == LE_LINK) { hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); + hci_adv_instances_set_rpa_expired(hdev, true); + } clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); + /* Check link security requirements are met */ + if (!hci_conn_check_link_mode(conn)) + ev->status = HCI_ERROR_AUTH_FAILURE; + if (ev->status && conn->state == BT_CONNECTED) { if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); + /* Notify upper layers so they can cleanup before + * disconnecting. + */ + hci_encrypt_cfm(conn, ev->status); hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); hci_conn_drop(conn); goto unlock; } - /* In Secure Connections Only mode, do not allow any connections - * that are not encrypted with AES-CCM using a P-256 authenticated - * combination key. - */ - if (hci_dev_test_flag(hdev, HCI_SC_ONLY) && - (!test_bit(HCI_CONN_AES_CCM, &conn->flags) || - conn->key_type != HCI_LK_AUTH_COMBINATION_P256)) { - hci_connect_cfm(conn, HCI_ERROR_AUTH_FAILURE); - hci_conn_drop(conn); - goto unlock; - } - /* Try reading the encryption key size for encrypted ACL links */ if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { - struct hci_cp_read_enc_key_size cp; - struct hci_request req; - - /* Only send HCI_Read_Encryption_Key_Size if the - * controller really supports it. If it doesn't, assume - * the default size (16). - */ - if (!(hdev->commands[20] & 0x10)) { - conn->enc_key_size = HCI_LINK_KEY_SIZE; + if (hci_read_enc_key_size(hdev, conn)) goto notify; - } - hci_req_init(&req, hdev); - - cp.handle = cpu_to_le16(conn->handle); - hci_req_add(&req, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp); + goto unlock; + } - if (hci_req_run_skb(&req, read_enc_key_size_complete)) { - BT_ERR("Sending HCI Read Encryption Key Size failed"); - conn->enc_key_size = HCI_LINK_KEY_SIZE; - goto notify; - } + /* We skip the WRITE_AUTH_PAYLOAD_TIMEOUT for ATS2851 based controllers + * to avoid unexpected SMP command errors when pairing. + */ + if (hci_test_quirk(hdev, HCI_QUIRK_BROKEN_WRITE_AUTH_PAYLOAD_TIMEOUT)) + goto notify; + + /* Set the default Authenticated Payload Timeout after + * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B + * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be + * sent when the link is active and Encryption is enabled, the conn + * type can be either LE or ACL and controller must support LMP Ping. + * Ensure for AES-CCM encryption as well. + */ + if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && + test_bit(HCI_CONN_AES_CCM, &conn->flags) && + ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || + (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { + struct hci_cp_write_auth_payload_to cp; - goto unlock; + cp.handle = cpu_to_le16(conn->handle); + cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); + if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, + sizeof(cp), &cp)) + bt_dev_err(hdev, "write auth payload timeout failed"); } notify: - if (conn->state == BT_CONFIG) { - if (!ev->status) - conn->state = BT_CONNECTED; - - hci_connect_cfm(conn, ev->status); - hci_conn_drop(conn); - } else - hci_encrypt_cfm(conn, ev->status, ev->encrypt); + hci_encrypt_cfm(conn, ev->status); unlock: hci_dev_unlock(hdev); } -static void hci_change_link_key_complete_evt(struct hci_dev *hdev, +static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_change_link_key_complete *ev = (void *) skb->data; + struct hci_ev_change_link_key_complete *ev = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -2709,13 +3684,13 @@ static void hci_change_link_key_complete_evt(struct hci_dev *hdev, hci_dev_unlock(hdev); } -static void hci_remote_features_evt(struct hci_dev *hdev, +static void hci_remote_features_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_remote_features *ev = (void *) skb->data; + struct hci_ev_remote_features *ev = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -2739,14 +3714,15 @@ static void hci_remote_features_evt(struct hci_dev *hdev, goto unlock; } - if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { + if (!ev->status) { struct hci_cp_remote_name_req cp; memset(&cp, 0, sizeof(cp)); bacpy(&cp.bdaddr, &conn->dst); cp.pscan_rep_mode = 0x02; hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); - } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) - mgmt_device_connected(hdev, conn, 0, NULL, 0); + } else { + mgmt_device_connected(hdev, conn, NULL, 0); + } if (!hci_outgoing_auth_needed(hdev, conn)) { conn->state = BT_CONNECTED; @@ -2758,392 +3734,659 @@ unlock: hci_dev_unlock(hdev); } -static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb, - u16 *opcode, u8 *status, - hci_req_complete_t *req_complete, - hci_req_complete_skb_t *req_complete_skb) +static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) { - struct hci_ev_cmd_complete *ev = (void *) skb->data; + cancel_delayed_work(&hdev->cmd_timer); - *opcode = __le16_to_cpu(ev->opcode); - *status = skb->data[sizeof(*ev)]; + rcu_read_lock(); + if (!test_bit(HCI_RESET, &hdev->flags)) { + if (ncmd) { + cancel_delayed_work(&hdev->ncmd_timer); + atomic_set(&hdev->cmd_cnt, 1); + } else { + if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) + queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, + HCI_NCMD_TIMEOUT); + } + } + rcu_read_unlock(); +} - skb_pull(skb, sizeof(*ev)); +static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_le_read_buffer_size_v2 *rp = data; - switch (*opcode) { - case HCI_OP_INQUIRY_CANCEL: - hci_cc_inquiry_cancel(hdev, skb); - break; + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - case HCI_OP_PERIODIC_INQ: - hci_cc_periodic_inq(hdev, skb); - break; + if (rp->status) + return rp->status; - case HCI_OP_EXIT_PERIODIC_INQ: - hci_cc_exit_periodic_inq(hdev, skb); - break; + hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); + hdev->le_pkts = rp->acl_max_pkt; + hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); + hdev->iso_pkts = rp->iso_max_pkt; - case HCI_OP_REMOTE_NAME_REQ_CANCEL: - hci_cc_remote_name_req_cancel(hdev, skb); - break; + hdev->le_cnt = hdev->le_pkts; + hdev->iso_cnt = hdev->iso_pkts; - case HCI_OP_ROLE_DISCOVERY: - hci_cc_role_discovery(hdev, skb); - break; + BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, + hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); - case HCI_OP_READ_LINK_POLICY: - hci_cc_read_link_policy(hdev, skb); - break; + if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) + return HCI_ERROR_INVALID_PARAMETERS; - case HCI_OP_WRITE_LINK_POLICY: - hci_cc_write_link_policy(hdev, skb); - break; + return rp->status; +} - case HCI_OP_READ_DEF_LINK_POLICY: - hci_cc_read_def_link_policy(hdev, skb); - break; +static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) +{ + struct hci_conn *conn, *tmp; - case HCI_OP_WRITE_DEF_LINK_POLICY: - hci_cc_write_def_link_policy(hdev, skb); - break; + lockdep_assert_held(&hdev->lock); - case HCI_OP_RESET: - hci_cc_reset(hdev, skb); - break; + list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { + if (conn->type != CIS_LINK || + conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) + continue; - case HCI_OP_READ_STORED_LINK_KEY: - hci_cc_read_stored_link_key(hdev, skb); - break; + if (HCI_CONN_HANDLE_UNSET(conn->handle)) + hci_conn_failed(conn, status); + } +} - case HCI_OP_DELETE_STORED_LINK_KEY: - hci_cc_delete_stored_link_key(hdev, skb); - break; +static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_le_set_cig_params *rp = data; + struct hci_cp_le_set_cig_params *cp; + struct hci_conn *conn; + u8 status = rp->status; + bool pending = false; + int i; - case HCI_OP_WRITE_LOCAL_NAME: - hci_cc_write_local_name(hdev, skb); - break; + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - case HCI_OP_READ_LOCAL_NAME: - hci_cc_read_local_name(hdev, skb); - break; + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); + if (!rp->status && (!cp || rp->num_handles != cp->num_cis || + rp->cig_id != cp->cig_id)) { + bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); + status = HCI_ERROR_UNSPECIFIED; + } - case HCI_OP_WRITE_AUTH_ENABLE: - hci_cc_write_auth_enable(hdev, skb); - break; + hci_dev_lock(hdev); - case HCI_OP_WRITE_ENCRYPT_MODE: - hci_cc_write_encrypt_mode(hdev, skb); - break; + /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 + * + * If the Status return parameter is non-zero, then the state of the CIG + * and its CIS configurations shall not be changed by the command. If + * the CIG did not already exist, it shall not be created. + */ + if (status) { + /* Keep current configuration, fail only the unbound CIS */ + hci_unbound_cis_failed(hdev, rp->cig_id, status); + goto unlock; + } - case HCI_OP_WRITE_SCAN_ENABLE: - hci_cc_write_scan_enable(hdev, skb); - break; + /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 + * + * If the Status return parameter is zero, then the Controller shall + * set the Connection_Handle arrayed return parameter to the connection + * handle(s) corresponding to the CIS configurations specified in + * the CIS_IDs command parameter, in the same order. + */ + for (i = 0; i < rp->num_handles; ++i) { + conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, + cp->cis[i].cis_id); + if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) + continue; - case HCI_OP_READ_CLASS_OF_DEV: - hci_cc_read_class_of_dev(hdev, skb); - break; + if (conn->state != BT_BOUND && conn->state != BT_CONNECT) + continue; - case HCI_OP_WRITE_CLASS_OF_DEV: - hci_cc_write_class_of_dev(hdev, skb); - break; + if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) + continue; - case HCI_OP_READ_VOICE_SETTING: - hci_cc_read_voice_setting(hdev, skb); - break; + if (conn->state == BT_CONNECT) + pending = true; + } - case HCI_OP_WRITE_VOICE_SETTING: - hci_cc_write_voice_setting(hdev, skb); - break; +unlock: + if (pending) + hci_le_create_cis_pending(hdev); - case HCI_OP_READ_NUM_SUPPORTED_IAC: - hci_cc_read_num_supported_iac(hdev, skb); - break; + hci_dev_unlock(hdev); - case HCI_OP_WRITE_SSP_MODE: - hci_cc_write_ssp_mode(hdev, skb); - break; + return rp->status; +} - case HCI_OP_WRITE_SC_SUPPORT: - hci_cc_write_sc_support(hdev, skb); - break; +static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_le_setup_iso_path *rp = data; + struct hci_cp_le_setup_iso_path *cp; + struct hci_conn *conn; - case HCI_OP_READ_LOCAL_VERSION: - hci_cc_read_local_version(hdev, skb); - break; + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - case HCI_OP_READ_LOCAL_COMMANDS: - hci_cc_read_local_commands(hdev, skb); - break; + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); + if (!cp) + return rp->status; - case HCI_OP_READ_LOCAL_FEATURES: - hci_cc_read_local_features(hdev, skb); - break; + hci_dev_lock(hdev); - case HCI_OP_READ_LOCAL_EXT_FEATURES: - hci_cc_read_local_ext_features(hdev, skb); - break; + conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); + if (!conn) + goto unlock; - case HCI_OP_READ_BUFFER_SIZE: - hci_cc_read_buffer_size(hdev, skb); - break; + if (rp->status) { + hci_connect_cfm(conn, rp->status); + hci_conn_del(conn); + goto unlock; + } - case HCI_OP_READ_BD_ADDR: - hci_cc_read_bd_addr(hdev, skb); + switch (cp->direction) { + /* Input (Host to Controller) */ + case 0x00: + /* Only confirm connection if output only */ + if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) + hci_connect_cfm(conn, rp->status); break; + /* Output (Controller to Host) */ + case 0x01: + /* Confirm connection since conn->iso_qos is always configured + * last. + */ + hci_connect_cfm(conn, rp->status); - case HCI_OP_READ_PAGE_SCAN_ACTIVITY: - hci_cc_read_page_scan_activity(hdev, skb); - break; + /* Notify device connected in case it is a BIG Sync */ + if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) + mgmt_device_connected(hdev, conn, NULL, 0); - case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY: - hci_cc_write_page_scan_activity(hdev, skb); break; + } - case HCI_OP_READ_PAGE_SCAN_TYPE: - hci_cc_read_page_scan_type(hdev, skb); - break; +unlock: + hci_dev_unlock(hdev); + return rp->status; +} - case HCI_OP_WRITE_PAGE_SCAN_TYPE: - hci_cc_write_page_scan_type(hdev, skb); - break; +static u8 hci_cc_le_read_all_local_features(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_rp_le_read_all_local_features *rp = data; - case HCI_OP_READ_DATA_BLOCK_SIZE: - hci_cc_read_data_block_size(hdev, skb); - break; + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - case HCI_OP_READ_FLOW_CONTROL_MODE: - hci_cc_read_flow_control_mode(hdev, skb); - break; + if (rp->status) + return rp->status; - case HCI_OP_READ_LOCAL_AMP_INFO: - hci_cc_read_local_amp_info(hdev, skb); - break; + memcpy(hdev->le_features, rp->features, 248); - case HCI_OP_READ_CLOCK: - hci_cc_read_clock(hdev, skb); - break; + return rp->status; +} - case HCI_OP_READ_INQ_RSP_TX_POWER: - hci_cc_read_inq_rsp_tx_power(hdev, skb); - break; +static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) +{ + bt_dev_dbg(hdev, "status 0x%2.2x", status); +} - case HCI_OP_PIN_CODE_REPLY: - hci_cc_pin_code_reply(hdev, skb); - break; +static void hci_cs_le_read_all_remote_features(struct hci_dev *hdev, u8 status) +{ + struct hci_cp_le_read_remote_features *cp; + struct hci_conn *conn; - case HCI_OP_PIN_CODE_NEG_REPLY: - hci_cc_pin_code_neg_reply(hdev, skb); - break; + bt_dev_dbg(hdev, "status 0x%2.2x", status); - case HCI_OP_READ_LOCAL_OOB_DATA: - hci_cc_read_local_oob_data(hdev, skb); - break; + if (!status) + return; - case HCI_OP_READ_LOCAL_OOB_EXT_DATA: - hci_cc_read_local_oob_ext_data(hdev, skb); - break; + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_ALL_REMOTE_FEATURES); + if (!cp) + return; - case HCI_OP_LE_READ_BUFFER_SIZE: - hci_cc_le_read_buffer_size(hdev, skb); - break; + hci_dev_lock(hdev); - case HCI_OP_LE_READ_LOCAL_FEATURES: - hci_cc_le_read_local_features(hdev, skb); - break; + conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); + if (conn && conn->state == BT_CONFIG) + hci_connect_cfm(conn, status); - case HCI_OP_LE_READ_ADV_TX_POWER: - hci_cc_le_read_adv_tx_power(hdev, skb); - break; + hci_dev_unlock(hdev); +} - case HCI_OP_USER_CONFIRM_REPLY: - hci_cc_user_confirm_reply(hdev, skb); - break; +static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_status *rp = data; + struct hci_cp_le_set_per_adv_params *cp; - case HCI_OP_USER_CONFIRM_NEG_REPLY: - hci_cc_user_confirm_neg_reply(hdev, skb); - break; + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - case HCI_OP_USER_PASSKEY_REPLY: - hci_cc_user_passkey_reply(hdev, skb); - break; + if (rp->status) + return rp->status; - case HCI_OP_USER_PASSKEY_NEG_REPLY: - hci_cc_user_passkey_neg_reply(hdev, skb); - break; + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); + if (!cp) + return rp->status; - case HCI_OP_LE_SET_RANDOM_ADDR: - hci_cc_le_set_random_addr(hdev, skb); - break; + /* TODO: set the conn state */ + return rp->status; +} - case HCI_OP_LE_SET_ADV_ENABLE: - hci_cc_le_set_adv_enable(hdev, skb); - break; +static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_status *rp = data; + struct hci_cp_le_set_per_adv_enable *cp; + struct adv_info *adv = NULL, *n; + u8 per_adv_cnt = 0; - case HCI_OP_LE_SET_SCAN_PARAM: - hci_cc_le_set_scan_param(hdev, skb); - break; + bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); - case HCI_OP_LE_SET_SCAN_ENABLE: - hci_cc_le_set_scan_enable(hdev, skb); - break; + if (rp->status) + return rp->status; - case HCI_OP_LE_READ_WHITE_LIST_SIZE: - hci_cc_le_read_white_list_size(hdev, skb); - break; + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); + if (!cp) + return rp->status; - case HCI_OP_LE_CLEAR_WHITE_LIST: - hci_cc_le_clear_white_list(hdev, skb); - break; + hci_dev_lock(hdev); - case HCI_OP_LE_ADD_TO_WHITE_LIST: - hci_cc_le_add_to_white_list(hdev, skb); - break; + adv = hci_find_adv_instance(hdev, cp->handle); - case HCI_OP_LE_DEL_FROM_WHITE_LIST: - hci_cc_le_del_from_white_list(hdev, skb); - break; + if (cp->enable) { + hci_dev_set_flag(hdev, HCI_LE_PER_ADV); - case HCI_OP_LE_READ_SUPPORTED_STATES: - hci_cc_le_read_supported_states(hdev, skb); - break; + if (adv) + adv->periodic_enabled = true; + } else { + if (adv) + adv->periodic_enabled = false; - case HCI_OP_LE_READ_DEF_DATA_LEN: - hci_cc_le_read_def_data_len(hdev, skb); - break; + /* If just one instance was disabled check if there are + * any other instance enabled before clearing HCI_LE_PER_ADV. + * The current periodic adv instance will be marked as + * disabled once extended advertising is also disabled. + */ + list_for_each_entry_safe(adv, n, &hdev->adv_instances, + list) { + if (adv->periodic && adv->enabled) + per_adv_cnt++; + } - case HCI_OP_LE_WRITE_DEF_DATA_LEN: - hci_cc_le_write_def_data_len(hdev, skb); - break; + if (per_adv_cnt > 1) + goto unlock; - case HCI_OP_LE_READ_MAX_DATA_LEN: - hci_cc_le_read_max_data_len(hdev, skb); - break; + hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); + } - case HCI_OP_WRITE_LE_HOST_SUPPORTED: - hci_cc_write_le_host_supported(hdev, skb); - break; +unlock: + hci_dev_unlock(hdev); - case HCI_OP_LE_SET_ADV_PARAM: - hci_cc_set_adv_param(hdev, skb); - break; + return rp->status; +} + +#define HCI_CC_VL(_op, _func, _min, _max) \ +{ \ + .op = _op, \ + .func = _func, \ + .min_len = _min, \ + .max_len = _max, \ +} + +#define HCI_CC(_op, _func, _len) \ + HCI_CC_VL(_op, _func, _len, _len) + +#define HCI_CC_STATUS(_op, _func) \ + HCI_CC(_op, _func, sizeof(struct hci_ev_status)) + +static const struct hci_cc { + u16 op; + u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); + u16 min_len; + u16 max_len; +} hci_cc_table[] = { + HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), + HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), + HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), + HCI_CC(HCI_OP_REMOTE_NAME_REQ_CANCEL, hci_cc_remote_name_req_cancel, + sizeof(struct hci_rp_remote_name_req_cancel)), + HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, + sizeof(struct hci_rp_role_discovery)), + HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, + sizeof(struct hci_rp_read_link_policy)), + HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, + sizeof(struct hci_rp_write_link_policy)), + HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, + sizeof(struct hci_rp_read_def_link_policy)), + HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, + hci_cc_write_def_link_policy), + HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), + HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, + sizeof(struct hci_rp_read_stored_link_key)), + HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, + sizeof(struct hci_rp_delete_stored_link_key)), + HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), + HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, + sizeof(struct hci_rp_read_local_name)), + HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), + HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), + HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), + HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), + HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, + sizeof(struct hci_rp_read_class_of_dev)), + HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), + HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, + sizeof(struct hci_rp_read_voice_setting)), + HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), + HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, + sizeof(struct hci_rp_read_num_supported_iac)), + HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), + HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), + HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, + sizeof(struct hci_rp_read_auth_payload_to)), + HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, + sizeof(struct hci_rp_write_auth_payload_to)), + HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, + sizeof(struct hci_rp_read_local_version)), + HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, + sizeof(struct hci_rp_read_local_commands)), + HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, + sizeof(struct hci_rp_read_local_features)), + HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, + sizeof(struct hci_rp_read_local_ext_features)), + HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, + sizeof(struct hci_rp_read_buffer_size)), + HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, + sizeof(struct hci_rp_read_bd_addr)), + HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, + sizeof(struct hci_rp_read_local_pairing_opts)), + HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, + sizeof(struct hci_rp_read_page_scan_activity)), + HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, + hci_cc_write_page_scan_activity), + HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, + sizeof(struct hci_rp_read_page_scan_type)), + HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), + HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, + sizeof(struct hci_rp_read_clock)), + HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, + sizeof(struct hci_rp_read_enc_key_size)), + HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, + sizeof(struct hci_rp_read_inq_rsp_tx_power)), + HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, + hci_cc_read_def_err_data_reporting, + sizeof(struct hci_rp_read_def_err_data_reporting)), + HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, + hci_cc_write_def_err_data_reporting), + HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, + sizeof(struct hci_rp_pin_code_reply)), + HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, + sizeof(struct hci_rp_pin_code_neg_reply)), + HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, + sizeof(struct hci_rp_read_local_oob_data)), + HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, + sizeof(struct hci_rp_read_local_oob_ext_data)), + HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, + sizeof(struct hci_rp_le_read_buffer_size)), + HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, + sizeof(struct hci_rp_le_read_local_features)), + HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, + sizeof(struct hci_rp_le_read_adv_tx_power)), + HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, + sizeof(struct hci_rp_user_confirm_reply)), + HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, + sizeof(struct hci_rp_user_confirm_reply)), + HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, + sizeof(struct hci_rp_user_confirm_reply)), + HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, + sizeof(struct hci_rp_user_confirm_reply)), + HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), + HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), + HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), + HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), + HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, + hci_cc_le_read_accept_list_size, + sizeof(struct hci_rp_le_read_accept_list_size)), + HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), + HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, + hci_cc_le_add_to_accept_list), + HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, + hci_cc_le_del_from_accept_list), + HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, + sizeof(struct hci_rp_le_read_supported_states)), + HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, + sizeof(struct hci_rp_le_read_def_data_len)), + HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, + hci_cc_le_write_def_data_len), + HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, + hci_cc_le_add_to_resolv_list), + HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, + hci_cc_le_del_from_resolv_list), + HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, + hci_cc_le_clear_resolv_list), + HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, + sizeof(struct hci_rp_le_read_resolv_list_size)), + HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, + hci_cc_le_set_addr_resolution_enable), + HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, + sizeof(struct hci_rp_le_read_max_data_len)), + HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, + hci_cc_write_le_host_supported), + HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), + HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, + sizeof(struct hci_rp_read_rssi)), + HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, + sizeof(struct hci_rp_read_tx_power)), + HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), + HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, + hci_cc_le_set_ext_scan_param), + HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, + hci_cc_le_set_ext_scan_enable), + HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), + HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, + hci_cc_le_read_num_adv_sets, + sizeof(struct hci_rp_le_read_num_supported_adv_sets)), + HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, + hci_cc_le_set_ext_adv_enable), + HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, + hci_cc_le_set_adv_set_random_addr), + HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), + HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), + HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), + HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, + hci_cc_le_set_per_adv_enable), + HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, + sizeof(struct hci_rp_le_read_transmit_power)), + HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), + HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, + sizeof(struct hci_rp_le_read_buffer_size_v2)), + HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, + sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), + HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, + sizeof(struct hci_rp_le_setup_iso_path)), + HCI_CC(HCI_OP_LE_READ_ALL_LOCAL_FEATURES, + hci_cc_le_read_all_local_features, + sizeof(struct hci_rp_le_read_all_local_features)), +}; + +static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, + struct sk_buff *skb) +{ + void *data; + + if (skb->len < cc->min_len) { + bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", + cc->op, skb->len, cc->min_len); + return HCI_ERROR_UNSPECIFIED; + } + + /* Just warn if the length is over max_len size it still be possible to + * partially parse the cc so leave to callback to decide if that is + * acceptable. + */ + if (skb->len > cc->max_len) + bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", + cc->op, skb->len, cc->max_len); - case HCI_OP_READ_RSSI: - hci_cc_read_rssi(hdev, skb); - break; + data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); + if (!data) + return HCI_ERROR_UNSPECIFIED; - case HCI_OP_READ_TX_POWER: - hci_cc_read_tx_power(hdev, skb); - break; + return cc->func(hdev, data, skb); +} - case HCI_OP_WRITE_SSP_DEBUG_MODE: - hci_cc_write_ssp_debug_mode(hdev, skb); - break; +static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb, u16 *opcode, u8 *status, + hci_req_complete_t *req_complete, + hci_req_complete_skb_t *req_complete_skb) +{ + struct hci_ev_cmd_complete *ev = data; + int i; - default: - BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode); - break; + *opcode = __le16_to_cpu(ev->opcode); + + bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); + + for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { + if (hci_cc_table[i].op == *opcode) { + *status = hci_cc_func(hdev, &hci_cc_table[i], skb); + break; + } } - if (*opcode != HCI_OP_NOP) - cancel_delayed_work(&hdev->cmd_timer); + if (i == ARRAY_SIZE(hci_cc_table)) { + if (!skb->len) { + bt_dev_err(hdev, "Unexpected cc 0x%4.4x with no status", + *opcode); + *status = HCI_ERROR_UNSPECIFIED; + return; + } + + /* Unknown opcode, assume byte 0 contains the status, so + * that e.g. __hci_cmd_sync() properly returns errors + * for vendor specific commands send by HCI drivers. + * If a vendor doesn't actually follow this convention we may + * need to introduce a vendor CC table in order to properly set + * the status. + */ + *status = skb->data[0]; + } - if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) - atomic_set(&hdev->cmd_cnt, 1); + handle_cmd_cnt_and_timer(hdev, ev->ncmd); hci_req_cmd_complete(hdev, *opcode, *status, req_complete, req_complete_skb); + if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { + bt_dev_err(hdev, + "unexpected event for opcode 0x%4.4x", *opcode); + return; + } + if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) queue_work(hdev->workqueue, &hdev->cmd_work); } -static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb, - u16 *opcode, u8 *status, - hci_req_complete_t *req_complete, - hci_req_complete_skb_t *req_complete_skb) +static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) { - struct hci_ev_cmd_status *ev = (void *) skb->data; - - skb_pull(skb, sizeof(*ev)); - - *opcode = __le16_to_cpu(ev->opcode); - *status = ev->status; - - switch (*opcode) { - case HCI_OP_INQUIRY: - hci_cs_inquiry(hdev, ev->status); - break; - - case HCI_OP_CREATE_CONN: - hci_cs_create_conn(hdev, ev->status); - break; - - case HCI_OP_DISCONNECT: - hci_cs_disconnect(hdev, ev->status); - break; - - case HCI_OP_ADD_SCO: - hci_cs_add_sco(hdev, ev->status); - break; + struct hci_cp_le_create_cis *cp; + bool pending = false; + int i; - case HCI_OP_AUTH_REQUESTED: - hci_cs_auth_requested(hdev, ev->status); - break; + bt_dev_dbg(hdev, "status 0x%2.2x", status); - case HCI_OP_SET_CONN_ENCRYPT: - hci_cs_set_conn_encrypt(hdev, ev->status); - break; + if (!status) + return; - case HCI_OP_REMOTE_NAME_REQ: - hci_cs_remote_name_req(hdev, ev->status); - break; + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); + if (!cp) + return; - case HCI_OP_READ_REMOTE_FEATURES: - hci_cs_read_remote_features(hdev, ev->status); - break; + hci_dev_lock(hdev); - case HCI_OP_READ_REMOTE_EXT_FEATURES: - hci_cs_read_remote_ext_features(hdev, ev->status); - break; + /* Remove connection if command failed */ + for (i = 0; i < cp->num_cis; i++) { + struct hci_conn *conn; + u16 handle; - case HCI_OP_SETUP_SYNC_CONN: - hci_cs_setup_sync_conn(hdev, ev->status); - break; + handle = __le16_to_cpu(cp->cis[i].cis_handle); - case HCI_OP_SNIFF_MODE: - hci_cs_sniff_mode(hdev, ev->status); - break; + conn = hci_conn_hash_lookup_handle(hdev, handle); + if (conn) { + if (test_and_clear_bit(HCI_CONN_CREATE_CIS, + &conn->flags)) + pending = true; + conn->state = BT_CLOSED; + hci_connect_cfm(conn, status); + hci_conn_del(conn); + } + } + cp->num_cis = 0; - case HCI_OP_EXIT_SNIFF_MODE: - hci_cs_exit_sniff_mode(hdev, ev->status); - break; + if (pending) + hci_le_create_cis_pending(hdev); - case HCI_OP_SWITCH_ROLE: - hci_cs_switch_role(hdev, ev->status); - break; + hci_dev_unlock(hdev); +} - case HCI_OP_LE_CREATE_CONN: - hci_cs_le_create_conn(hdev, ev->status); - break; +#define HCI_CS(_op, _func) \ +{ \ + .op = _op, \ + .func = _func, \ +} + +static const struct hci_cs { + u16 op; + void (*func)(struct hci_dev *hdev, __u8 status); +} hci_cs_table[] = { + HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), + HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), + HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), + HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), + HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), + HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), + HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), + HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), + HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, + hci_cs_read_remote_ext_features), + HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), + HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, + hci_cs_enhanced_setup_sync_conn), + HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), + HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), + HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), + HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), + HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), + HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), + HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), + HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), + HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), + HCI_CS(HCI_OP_LE_READ_ALL_REMOTE_FEATURES, + hci_cs_le_read_all_remote_features), +}; + +static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb, u16 *opcode, u8 *status, + hci_req_complete_t *req_complete, + hci_req_complete_skb_t *req_complete_skb) +{ + struct hci_ev_cmd_status *ev = data; + int i; - case HCI_OP_LE_READ_REMOTE_FEATURES: - hci_cs_le_read_remote_features(hdev, ev->status); - break; + *opcode = __le16_to_cpu(ev->opcode); + *status = ev->status; - case HCI_OP_LE_START_ENC: - hci_cs_le_start_enc(hdev, ev->status); - break; + bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); - default: - BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode); - break; + for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { + if (hci_cs_table[i].op == *opcode) { + hci_cs_table[i].func(hdev, ev->status); + break; + } } - if (*opcode != HCI_OP_NOP) - cancel_delayed_work(&hdev->cmd_timer); - - if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) - atomic_set(&hdev->cmd_cnt, 1); + handle_cmd_cnt_and_timer(hdev, ev->ncmd); /* Indicate request completion if the command failed. Also, if * we're not waiting for a special event and we get a success @@ -3151,30 +4394,39 @@ static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb, * (since for this kind of commands there will not be a command * complete event). */ - if (ev->status || - (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->hci.req_event)) + if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, req_complete_skb); + if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { + bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", + *opcode); + return; + } + } if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) queue_work(hdev->workqueue, &hdev->cmd_work); } -static void hci_hardware_error_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_hardware_error *ev = (void *) skb->data; + struct hci_ev_hardware_error *ev = data; + + bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); hdev->hw_error_code = ev->code; queue_work(hdev->req_workqueue, &hdev->error_reset); } -static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_role_change_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_role_change *ev = (void *) skb->data; + struct hci_ev_role_change *ev = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -3191,28 +4443,25 @@ static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_dev_unlock(hdev); } -static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_num_comp_pkts *ev = (void *) skb->data; + struct hci_ev_num_comp_pkts *ev = data; int i; - if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) { - BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode); + if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, + flex_array_size(ev, handles, ev->num))) return; - } - if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) + - ev->num_hndl * sizeof(struct hci_comp_pkts_info)) { - BT_DBG("%s bad parameters", hdev->name); - return; - } + bt_dev_dbg(hdev, "num %d", ev->num); - BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl); + hci_dev_lock(hdev); - for (i = 0; i < ev->num_hndl; i++) { + for (i = 0; i < ev->num; i++) { struct hci_comp_pkts_info *info = &ev->handles[i]; struct hci_conn *conn; __u16 handle, count; + unsigned int i; handle = __le16_to_cpu(info->handle); count = __le16_to_cpu(info->count); @@ -3221,7 +4470,20 @@ static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb) if (!conn) continue; - conn->sent -= count; + /* Check if there is really enough packets outstanding before + * attempting to decrease the sent counter otherwise it could + * underflow.. + */ + if (conn->sent >= count) { + conn->sent -= count; + } else { + bt_dev_warn(hdev, "hcon %p sent %u < count %u", + conn, conn->sent, count); + conn->sent = 0; + } + + for (i = 0; i < count; ++i) + hci_conn_tx_dequeue(conn); switch (conn->type) { case ACL_LINK: @@ -3243,97 +4505,40 @@ static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb) break; case SCO_LINK: + case ESCO_LINK: hdev->sco_cnt += count; if (hdev->sco_cnt > hdev->sco_pkts) hdev->sco_cnt = hdev->sco_pkts; - break; - default: - BT_ERR("Unknown type %d conn %p", conn->type, conn); break; - } - } - queue_work(hdev->workqueue, &hdev->tx_work); -} - -static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev, - __u16 handle) -{ - struct hci_chan *chan; - - switch (hdev->dev_type) { - case HCI_PRIMARY: - return hci_conn_hash_lookup_handle(hdev, handle); - case HCI_AMP: - chan = hci_chan_lookup_handle(hdev, handle); - if (chan) - return chan->conn; - break; - default: - BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); - break; - } - - return NULL; -} - -static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb) -{ - struct hci_ev_num_comp_blocks *ev = (void *) skb->data; - int i; - - if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) { - BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode); - return; - } - - if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) + - ev->num_hndl * sizeof(struct hci_comp_blocks_info)) { - BT_DBG("%s bad parameters", hdev->name); - return; - } - - BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks, - ev->num_hndl); - - for (i = 0; i < ev->num_hndl; i++) { - struct hci_comp_blocks_info *info = &ev->handles[i]; - struct hci_conn *conn = NULL; - __u16 handle, block_count; - - handle = __le16_to_cpu(info->handle); - block_count = __le16_to_cpu(info->blocks); - - conn = __hci_conn_lookup_handle(hdev, handle); - if (!conn) - continue; - - conn->sent -= block_count; - - switch (conn->type) { - case ACL_LINK: - case AMP_LINK: - hdev->block_cnt += block_count; - if (hdev->block_cnt > hdev->num_blocks) - hdev->block_cnt = hdev->num_blocks; + case CIS_LINK: + case BIS_LINK: + case PA_LINK: + hdev->iso_cnt += count; + if (hdev->iso_cnt > hdev->iso_pkts) + hdev->iso_cnt = hdev->iso_pkts; break; default: - BT_ERR("Unknown type %d conn %p", conn->type, conn); + bt_dev_err(hdev, "unknown type %d conn %p", + conn->type, conn); break; } } queue_work(hdev->workqueue, &hdev->tx_work); + + hci_dev_unlock(hdev); } -static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_mode_change_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_mode_change *ev = (void *) skb->data; + struct hci_ev_mode_change *ev = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -3356,12 +4561,13 @@ static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_dev_unlock(hdev); } -static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_pin_code_req *ev = (void *) skb->data; + struct hci_ev_pin_code_req *ev = data; struct hci_conn *conn; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); hci_dev_lock(hdev); @@ -3426,14 +4632,15 @@ static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) } } -static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_link_key_req *ev = (void *) skb->data; + struct hci_ev_link_key_req *ev = data; struct hci_cp_link_key_reply cp; struct hci_conn *conn; struct link_key *key; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); if (!hci_dev_test_flag(hdev, HCI_MGMT)) return; @@ -3442,13 +4649,11 @@ static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb) key = hci_find_link_key(hdev, &ev->bdaddr); if (!key) { - BT_DBG("%s link key not found for %pMR", hdev->name, - &ev->bdaddr); + bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); goto not_found; } - BT_DBG("%s found key type %u for %pMR", hdev->name, key->type, - &ev->bdaddr); + bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); if (conn) { @@ -3457,15 +4662,14 @@ static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb) if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || key->type == HCI_LK_UNAUTH_COMBINATION_P256) && conn->auth_type != 0xff && (conn->auth_type & 0x01)) { - BT_DBG("%s ignoring unauthenticated key", hdev->name); + bt_dev_dbg(hdev, "ignoring unauthenticated key"); goto not_found; } if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && (conn->pending_sec_level == BT_SECURITY_HIGH || conn->pending_sec_level == BT_SECURITY_FIPS)) { - BT_DBG("%s ignoring key unauthenticated for high security", - hdev->name); + bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); goto not_found; } @@ -3486,15 +4690,16 @@ not_found: hci_dev_unlock(hdev); } -static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_link_key_notify *ev = (void *) skb->data; + struct hci_ev_link_key_notify *ev = data; struct hci_conn *conn; struct link_key *key; bool persistent; u8 pin_len = 0; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); hci_dev_lock(hdev); @@ -3502,6 +4707,15 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb) if (!conn) goto unlock; + /* Ignore NULL link key against CVE-2020-26555 */ + if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { + bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", + &ev->bdaddr); + hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); + hci_conn_drop(conn); + goto unlock; + } + hci_conn_hold(conn); conn->disc_timeout = HCI_DISCONN_TIMEOUT; hci_conn_drop(conn); @@ -3546,12 +4760,13 @@ unlock: hci_dev_unlock(hdev); } -static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_clock_offset *ev = (void *) skb->data; + struct hci_ev_clock_offset *ev = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -3569,12 +4784,13 @@ static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_dev_unlock(hdev); } -static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_pkt_type_change *ev = (void *) skb->data; + struct hci_ev_pkt_type_change *ev = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -3585,12 +4801,13 @@ static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_dev_unlock(hdev); } -static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_pscan_rep_mode *ev = (void *) skb->data; + struct hci_ev_pscan_rep_mode *ev = data; struct inquiry_entry *ie; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); hci_dev_lock(hdev); @@ -3603,15 +4820,16 @@ static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_dev_unlock(hdev); } -static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, +static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, struct sk_buff *skb) { + struct hci_ev_inquiry_result_rssi *ev = edata; struct inquiry_data data; - int num_rsp = *((__u8 *) skb->data); + int i; - BT_DBG("%s num_rsp %d", hdev->name, num_rsp); + bt_dev_dbg(hdev, "num_rsp %d", ev->num); - if (!num_rsp) + if (!ev->num) return; if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) @@ -3619,13 +4837,22 @@ static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, hci_dev_lock(hdev); - if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) { - struct inquiry_info_with_rssi_and_pscan_mode *info; - info = (void *) (skb->data + 1); + if (skb->len == array_size(ev->num, + sizeof(struct inquiry_info_rssi_pscan))) { + struct inquiry_info_rssi_pscan *info; - for (; num_rsp; num_rsp--, info++) { + for (i = 0; i < ev->num; i++) { u32 flags; + info = hci_ev_skb_pull(hdev, skb, + HCI_EV_INQUIRY_RESULT_WITH_RSSI, + sizeof(*info)); + if (!info) { + bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", + HCI_EV_INQUIRY_RESULT_WITH_RSSI); + goto unlock; + } + bacpy(&data.bdaddr, &info->bdaddr); data.pscan_rep_mode = info->pscan_rep_mode; data.pscan_period_mode = info->pscan_period_mode; @@ -3639,14 +4866,24 @@ static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, info->dev_class, info->rssi, - flags, NULL, 0, NULL, 0); + flags, NULL, 0, NULL, 0, 0); } - } else { - struct inquiry_info_with_rssi *info = (void *) (skb->data + 1); + } else if (skb->len == array_size(ev->num, + sizeof(struct inquiry_info_rssi))) { + struct inquiry_info_rssi *info; - for (; num_rsp; num_rsp--, info++) { + for (i = 0; i < ev->num; i++) { u32 flags; + info = hci_ev_skb_pull(hdev, skb, + HCI_EV_INQUIRY_RESULT_WITH_RSSI, + sizeof(*info)); + if (!info) { + bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", + HCI_EV_INQUIRY_RESULT_WITH_RSSI); + goto unlock; + } + bacpy(&data.bdaddr, &info->bdaddr); data.pscan_rep_mode = info->pscan_rep_mode; data.pscan_period_mode = info->pscan_period_mode; @@ -3660,20 +4897,23 @@ static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, info->dev_class, info->rssi, - flags, NULL, 0, NULL, 0); + flags, NULL, 0, NULL, 0, 0); } + } else { + bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", + HCI_EV_INQUIRY_RESULT_WITH_RSSI); } - +unlock: hci_dev_unlock(hdev); } -static void hci_remote_ext_features_evt(struct hci_dev *hdev, +static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_remote_ext_features *ev = (void *) skb->data; + struct hci_ev_remote_ext_features *ev = data; struct hci_conn *conn; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -3718,8 +4958,9 @@ static void hci_remote_ext_features_evt(struct hci_dev *hdev, bacpy(&cp.bdaddr, &conn->dst); cp.pscan_rep_mode = 0x02; hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); - } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) - mgmt_device_connected(hdev, conn, 0, NULL, 0); + } else { + mgmt_device_connected(hdev, conn, NULL, 0); + } if (!hci_outgoing_auth_needed(hdev, conn)) { conn->state = BT_CONNECTED; @@ -3731,13 +4972,27 @@ unlock: hci_dev_unlock(hdev); } -static void hci_sync_conn_complete_evt(struct hci_dev *hdev, +static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_sync_conn_complete *ev = (void *) skb->data; + struct hci_ev_sync_conn_complete *ev = data; struct hci_conn *conn; + u8 status = ev->status; - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + switch (ev->link_type) { + case SCO_LINK: + case ESCO_LINK: + break; + default: + /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type + * for HCI_Synchronous_Connection_Complete is limited to + * either SCO or eSCO + */ + bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); + return; + } + + bt_dev_dbg(hdev, "status 0x%2.2x", status); hci_dev_lock(hdev); @@ -3760,9 +5015,25 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev, goto unlock; } - switch (ev->status) { + /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. + * Processing it more than once per connection can corrupt kernel memory. + * + * As the connection handle is set here for the first time, it indicates + * whether the connection is already set up. + */ + if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { + bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); + goto unlock; + } + + switch (status) { case 0x00: - conn->handle = __le16_to_cpu(ev->handle); + status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); + if (status) { + conn->state = BT_CLOSED; + break; + } + conn->state = BT_CONNECTED; conn->type = ev->link_type; @@ -3775,23 +5046,39 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev, case 0x11: /* Unsupported Feature or Parameter Value */ case 0x1c: /* SCO interval rejected */ case 0x1a: /* Unsupported Remote Feature */ + case 0x1e: /* Invalid LMP Parameters */ case 0x1f: /* Unspecified error */ case 0x20: /* Unsupported LMP Parameter value */ if (conn->out) { conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | (hdev->esco_type & EDR_ESCO_MASK); - if (hci_setup_sync(conn, conn->link->handle)) + if (hci_setup_sync(conn, conn->parent->handle)) goto unlock; } - /* fall through */ + fallthrough; default: conn->state = BT_CLOSED; break; } - hci_connect_cfm(conn, ev->status); - if (ev->status) + bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); + /* Notify only in case of SCO over HCI transport data path which + * is zero and non-zero value shall be non-HCI transport data path + */ + if (conn->codec.data_path == 0 && hdev->notify) { + switch (ev->air_mode) { + case 0x02: + hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); + break; + case 0x03: + hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); + break; + } + } + + hci_connect_cfm(conn, status); + if (status) hci_conn_del(conn); unlock: @@ -3815,17 +5102,21 @@ static inline size_t eir_get_length(u8 *eir, size_t eir_len) return eir_len; } -static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, +static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, struct sk_buff *skb) { + struct hci_ev_ext_inquiry_result *ev = edata; struct inquiry_data data; - struct extended_inquiry_info *info = (void *) (skb->data + 1); - int num_rsp = *((__u8 *) skb->data); size_t eir_len; + int i; + + if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, + flex_array_size(ev, info, ev->num))) + return; - BT_DBG("%s num_rsp %d", hdev->name, num_rsp); + bt_dev_dbg(hdev, "num %d", ev->num); - if (!num_rsp) + if (!ev->num) return; if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) @@ -3833,7 +5124,8 @@ static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, hci_dev_lock(hdev); - for (; num_rsp; num_rsp--, info++) { + for (i = 0; i < ev->num; i++) { + struct extended_inquiry_info *info = &ev->info[i]; u32 flags; bool name_known; @@ -3859,20 +5151,20 @@ static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, info->dev_class, info->rssi, - flags, info->data, eir_len, NULL, 0); + flags, info->data, eir_len, NULL, 0, 0); } hci_dev_unlock(hdev); } -static void hci_key_refresh_complete_evt(struct hci_dev *hdev, +static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_key_refresh_complete *ev = (void *) skb->data; + struct hci_ev_key_refresh_complete *ev = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status, - __le16_to_cpu(ev->handle)); + bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, + __le16_to_cpu(ev->handle)); hci_dev_lock(hdev); @@ -3957,8 +5249,8 @@ static u8 bredr_oob_data_present(struct hci_conn *conn) * available, then do not declare that OOB data is * present. */ - if (!memcmp(data->rand256, ZERO_KEY, 16) || - !memcmp(data->hash256, ZERO_KEY, 16)) + if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || + !crypto_memneq(data->hash256, ZERO_KEY, 16)) return 0x00; return 0x02; @@ -3968,26 +5260,30 @@ static u8 bredr_oob_data_present(struct hci_conn *conn) * not supported by the hardware, then check that if * P-192 data values are present. */ - if (!memcmp(data->rand192, ZERO_KEY, 16) || - !memcmp(data->hash192, ZERO_KEY, 16)) + if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || + !crypto_memneq(data->hash192, ZERO_KEY, 16)) return 0x00; return 0x01; } -static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_io_capa_request *ev = (void *) skb->data; + struct hci_ev_io_capa_request *ev = data; struct hci_conn *conn; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); hci_dev_lock(hdev); conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); - if (!conn) + if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) goto unlock; + /* Assume remote supports SSP since it has triggered this event */ + set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); + hci_conn_hold(conn); if (!hci_dev_test_flag(hdev, HCI_MGMT)) @@ -4044,12 +5340,13 @@ unlock: hci_dev_unlock(hdev); } -static void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_io_capa_reply *ev = (void *) skb->data; + struct hci_ev_io_capa_reply *ev = data; struct hci_conn *conn; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); hci_dev_lock(hdev); @@ -4064,14 +5361,14 @@ unlock: hci_dev_unlock(hdev); } -static void hci_user_confirm_request_evt(struct hci_dev *hdev, +static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_user_confirm_req *ev = (void *) skb->data; + struct hci_ev_user_confirm_req *ev = data; int loc_mitm, rem_mitm, confirm_hint = 0; struct hci_conn *conn; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); hci_dev_lock(hdev); @@ -4092,26 +5389,33 @@ static void hci_user_confirm_request_evt(struct hci_dev *hdev, */ if (conn->pending_sec_level > BT_SECURITY_MEDIUM && conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { - BT_DBG("Rejecting request: remote device can't provide MITM"); + bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, sizeof(ev->bdaddr), &ev->bdaddr); goto unlock; } - /* If no side requires MITM protection; auto-accept */ + /* If no side requires MITM protection; use JUST_CFM method */ if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { - /* If we're not the initiators request authorization to - * proceed from user space (mgmt_user_confirm with - * confirm_hint set to 1). The exception is if neither - * side had MITM or if the local IO capability is - * NoInputNoOutput, in which case we do auto-accept + /* If we're not the initiator of request authorization and the + * local IO capability is not NoInputNoOutput, use JUST_WORKS + * method (mgmt_user_confirm with confirm_hint set to 1). */ if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && - conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && - (loc_mitm || rem_mitm)) { - BT_DBG("Confirming auto-accept as acceptor"); + conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) { + bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); + confirm_hint = 1; + goto confirm; + } + + /* If there already exists link key in local host, leave the + * decision to user space since the remote device could be + * legitimate or malicious. + */ + if (hci_find_link_key(hdev, &ev->bdaddr)) { + bt_dev_dbg(hdev, "Local host already has link key"); confirm_hint = 1; goto confirm; } @@ -4139,24 +5443,24 @@ unlock: hci_dev_unlock(hdev); } -static void hci_user_passkey_request_evt(struct hci_dev *hdev, +static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_user_passkey_req *ev = (void *) skb->data; + struct hci_ev_user_passkey_req *ev = data; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); if (hci_dev_test_flag(hdev, HCI_MGMT)) mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); } -static void hci_user_passkey_notify_evt(struct hci_dev *hdev, +static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_user_passkey_notify *ev = (void *) skb->data; + struct hci_ev_user_passkey_notify *ev = data; struct hci_conn *conn; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); if (!conn) @@ -4171,12 +5475,13 @@ static void hci_user_passkey_notify_evt(struct hci_dev *hdev, conn->passkey_entered); } -static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_keypress_notify *ev = (void *) skb->data; + struct hci_ev_keypress_notify *ev = data; struct hci_conn *conn; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); if (!conn) @@ -4209,18 +5514,18 @@ static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb) conn->passkey_entered); } -static void hci_simple_pair_complete_evt(struct hci_dev *hdev, +static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_simple_pair_complete *ev = (void *) skb->data; + struct hci_ev_simple_pair_complete *ev = data; struct hci_conn *conn; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); hci_dev_lock(hdev); conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); - if (!conn) + if (!conn || !hci_conn_ssp_enabled(conn)) goto unlock; /* Reset the authentication requirement to unknown */ @@ -4240,14 +5545,14 @@ unlock: hci_dev_unlock(hdev); } -static void hci_remote_host_features_evt(struct hci_dev *hdev, +static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_remote_host_features *ev = (void *) skb->data; + struct hci_ev_remote_host_features *ev = data; struct inquiry_entry *ie; struct hci_conn *conn; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); hci_dev_lock(hdev); @@ -4262,13 +5567,13 @@ static void hci_remote_host_features_evt(struct hci_dev *hdev, hci_dev_unlock(hdev); } -static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, +static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, struct sk_buff *skb) { - struct hci_ev_remote_oob_data_request *ev = (void *) skb->data; + struct hci_ev_remote_oob_data_request *ev = edata; struct oob_data *data; - BT_DBG("%s", hdev->name); + bt_dev_dbg(hdev, ""); hci_dev_lock(hdev); @@ -4316,157 +5621,70 @@ unlock: hci_dev_unlock(hdev); } -#if IS_ENABLED(CONFIG_BT_HS) -static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb) -{ - struct hci_ev_channel_selected *ev = (void *)skb->data; - struct hci_conn *hcon; - - BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle); - - skb_pull(skb, sizeof(*ev)); - - hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); - if (!hcon) - return; - - amp_read_loc_assoc_final_data(hdev, hcon); -} - -static void hci_phy_link_complete_evt(struct hci_dev *hdev, - struct sk_buff *skb) -{ - struct hci_ev_phy_link_complete *ev = (void *) skb->data; - struct hci_conn *hcon, *bredr_hcon; - - BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle, - ev->status); - - hci_dev_lock(hdev); - - hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); - if (!hcon) { - hci_dev_unlock(hdev); - return; - } - - if (ev->status) { - hci_conn_del(hcon); - hci_dev_unlock(hdev); - return; - } - - bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon; - - hcon->state = BT_CONNECTED; - bacpy(&hcon->dst, &bredr_hcon->dst); - - hci_conn_hold(hcon); - hcon->disc_timeout = HCI_DISCONN_TIMEOUT; - hci_conn_drop(hcon); - - hci_debugfs_create_conn(hcon); - hci_conn_add_sysfs(hcon); - - amp_physical_cfm(bredr_hcon, hcon); - - hci_dev_unlock(hdev); -} - -static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) -{ - struct hci_ev_logical_link_complete *ev = (void *) skb->data; - struct hci_conn *hcon; - struct hci_chan *hchan; - struct amp_mgr *mgr; - - BT_DBG("%s log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x", - hdev->name, le16_to_cpu(ev->handle), ev->phy_handle, - ev->status); - - hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); - if (!hcon) - return; - - /* Create AMP hchan */ - hchan = hci_chan_create(hcon); - if (!hchan) - return; - - hchan->handle = le16_to_cpu(ev->handle); - - BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan); - - mgr = hcon->amp_mgr; - if (mgr && mgr->bredr_chan) { - struct l2cap_chan *bredr_chan = mgr->bredr_chan; - - l2cap_chan_lock(bredr_chan); - - bredr_chan->conn->mtu = hdev->block_mtu; - l2cap_logical_cfm(bredr_chan, hchan, 0); - hci_conn_hold(hcon); - - l2cap_chan_unlock(bredr_chan); - } -} - -static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, - struct sk_buff *skb) -{ - struct hci_ev_disconn_logical_link_complete *ev = (void *) skb->data; - struct hci_chan *hchan; - - BT_DBG("%s log handle 0x%4.4x status 0x%2.2x", hdev->name, - le16_to_cpu(ev->handle), ev->status); - - if (ev->status) - return; - - hci_dev_lock(hdev); - - hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle)); - if (!hchan) - goto unlock; - - amp_destroy_logical_link(hchan, ev->reason); - -unlock: - hci_dev_unlock(hdev); -} - -static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, - struct sk_buff *skb) +static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, + u8 bdaddr_type, bdaddr_t *local_rpa) { - struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data; - struct hci_conn *hcon; - - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + if (conn->out) { + conn->dst_type = bdaddr_type; + conn->resp_addr_type = bdaddr_type; + bacpy(&conn->resp_addr, bdaddr); - if (ev->status) - return; + /* Check if the controller has set a Local RPA then it must be + * used instead or hdev->rpa. + */ + if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { + conn->init_addr_type = ADDR_LE_DEV_RANDOM; + bacpy(&conn->init_addr, local_rpa); + } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { + conn->init_addr_type = ADDR_LE_DEV_RANDOM; + bacpy(&conn->init_addr, &conn->hdev->rpa); + } else { + hci_copy_identity_address(conn->hdev, &conn->init_addr, + &conn->init_addr_type); + } + } else { + conn->resp_addr_type = conn->hdev->adv_addr_type; + /* Check if the controller has set a Local RPA then it must be + * used instead or hdev->rpa. + */ + if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { + conn->resp_addr_type = ADDR_LE_DEV_RANDOM; + bacpy(&conn->resp_addr, local_rpa); + } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { + /* In case of ext adv, resp_addr will be updated in + * Adv Terminated event. + */ + if (!ext_adv_capable(conn->hdev)) + bacpy(&conn->resp_addr, + &conn->hdev->random_addr); + } else { + bacpy(&conn->resp_addr, &conn->hdev->bdaddr); + } - hci_dev_lock(hdev); + conn->init_addr_type = bdaddr_type; + bacpy(&conn->init_addr, bdaddr); - hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); - if (hcon) { - hcon->state = BT_CLOSED; - hci_conn_del(hcon); + /* For incoming connections, set the default minimum + * and maximum connection interval. They will be used + * to check if the parameters are in range and if not + * trigger the connection update procedure. + */ + conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; + conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; } - - hci_dev_unlock(hdev); } -#endif -static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, + bdaddr_t *bdaddr, u8 bdaddr_type, + bdaddr_t *local_rpa, u8 role, u16 handle, + u16 interval, u16 latency, + u16 supervision_timeout) { - struct hci_ev_le_conn_complete *ev = (void *) skb->data; struct hci_conn_params *params; struct hci_conn *conn; struct smp_irk *irk; u8 addr_type; - - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + int err; hci_dev_lock(hdev); @@ -4475,27 +5693,42 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) */ hci_dev_clear_flag(hdev, HCI_LE_ADV); - conn = hci_lookup_le_connect(hdev); - if (!conn) { - conn = hci_conn_add(hdev, LE_LINK, &ev->bdaddr, ev->role); - if (!conn) { - BT_ERR("No memory for new connection"); + /* Check for existing connection: + * + * 1. If it doesn't exist then use the role to create a new object. + * 2. If it does exist confirm that it is connecting/BT_CONNECT in case + * of initiator/master role since there could be a collision where + * either side is attempting to connect or something like a fuzzing + * testing is trying to play tricks to destroy the hcon object before + * it even attempts to connect (e.g. hcon->state == BT_OPEN). + */ + conn = hci_conn_hash_lookup_role(hdev, LE_LINK, role, bdaddr); + if (!conn || + (conn->role == HCI_ROLE_MASTER && conn->state != BT_CONNECT)) { + /* In case of error status and there is no connection pending + * just unlock as there is nothing to cleanup. + */ + if (status) goto unlock; - } - conn->dst_type = ev->bdaddr_type; + conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, bdaddr_type, + role); + if (IS_ERR(conn)) { + bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); + goto unlock; + } /* If we didn't have a hci_conn object previously - * but we're in master role this must be something - * initiated using a white list. Since white list based + * but we're in central role this must be something + * initiated using an accept list. Since accept list based * connections are not "first class citizens" we don't * have full tracking of them. Therefore, we go ahead * with a "best effort" approach of determining the * initiator address based on the HCI_PRIVACY flag. */ if (conn->out) { - conn->resp_addr_type = ev->bdaddr_type; - bacpy(&conn->resp_addr, &ev->bdaddr); + conn->resp_addr_type = bdaddr_type; + bacpy(&conn->resp_addr, bdaddr); if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { conn->init_addr_type = ADDR_LE_DEV_RANDOM; bacpy(&conn->init_addr, &hdev->rpa); @@ -4509,28 +5742,19 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) cancel_delayed_work(&conn->le_conn_timeout); } - if (!conn->out) { - /* Set the responder (our side) address type based on - * the advertising address type. - */ - conn->resp_addr_type = hdev->adv_addr_type; - if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) - bacpy(&conn->resp_addr, &hdev->random_addr); - else - bacpy(&conn->resp_addr, &hdev->bdaddr); - - conn->init_addr_type = ev->bdaddr_type; - bacpy(&conn->init_addr, &ev->bdaddr); - - /* For incoming connections, set the default minimum - * and maximum connection interval. They will be used - * to check if the parameters are in range and if not - * trigger the connection update procedure. - */ - conn->le_conn_min_interval = hdev->le_conn_min_interval; - conn->le_conn_max_interval = hdev->le_conn_max_interval; + /* The HCI_LE_Connection_Complete event is only sent once per connection. + * Processing it more than once per connection can corrupt kernel memory. + * + * As the connection handle is set here for the first time, it indicates + * whether the connection is already set up. + */ + if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { + bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); + goto unlock; } + le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); + /* Lookup the identity address from the stored connection * address and address type. * @@ -4546,8 +5770,18 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) conn->dst_type = irk->addr_type; } - if (ev->status) { - hci_le_conn_failed(conn, ev->status); + conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); + + /* All connection failure handling is taken care of by the + * hci_conn_failed function which is triggered by the HCI + * request completion callbacks used for connecting. + */ + if (status || hci_conn_set_handle(conn, handle)) + goto unlock; + + /* Drop the connection if it has been aborted */ + if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { + hci_conn_drop(conn); goto unlock; } @@ -4557,57 +5791,40 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) addr_type = BDADDR_LE_RANDOM; /* Drop the connection if the device is blocked */ - if (hci_bdaddr_list_lookup(&hdev->blacklist, &conn->dst, addr_type)) { + if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { hci_conn_drop(conn); goto unlock; } - if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) - mgmt_device_connected(hdev, conn, 0, NULL, 0); + mgmt_device_connected(hdev, conn, NULL, 0); conn->sec_level = BT_SECURITY_LOW; - conn->handle = __le16_to_cpu(ev->handle); conn->state = BT_CONFIG; - conn->le_conn_interval = le16_to_cpu(ev->interval); - conn->le_conn_latency = le16_to_cpu(ev->latency); - conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); + /* Store current advertising instance as connection advertising instance + * when software rotation is in use so it can be re-enabled when + * disconnected. + */ + if (!ext_adv_capable(hdev)) + conn->adv_instance = hdev->cur_adv_instance; + + conn->le_conn_interval = interval; + conn->le_conn_latency = latency; + conn->le_supv_timeout = supervision_timeout; hci_debugfs_create_conn(conn); hci_conn_add_sysfs(conn); - if (!ev->status) { - /* The remote features procedure is defined for master - * role only. So only in case of an initiated connection - * request the remote features. - * - * If the local controller supports slave-initiated features - * exchange, then requesting the remote features in slave - * role is possible. Otherwise just transition into the - * connected state without requesting the remote features. - */ - if (conn->out || - (hdev->le_features[0] & HCI_LE_SLAVE_FEATURES)) { - struct hci_cp_le_read_remote_features cp; - - cp.handle = __cpu_to_le16(conn->handle); - - hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, - sizeof(cp), &cp); - - hci_conn_hold(conn); - } else { - conn->state = BT_CONNECTED; - hci_connect_cfm(conn, ev->status); - } - } else { - hci_connect_cfm(conn, ev->status); + err = hci_le_read_remote_features(conn); + if (err) { + conn->state = BT_CONNECTED; + hci_connect_cfm(conn, status); } params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, conn->dst_type); if (params) { - list_del_init(¶ms->action); + hci_pend_le_list_del_init(params); if (params->conn) { hci_conn_drop(params->conn); hci_conn_put(params->conn); @@ -4616,17 +5833,203 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) } unlock: - hci_update_background_scan(hdev); + hci_update_passive_scan(hdev); + hci_dev_unlock(hdev); +} + +static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_le_conn_complete *ev = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); + + le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, + NULL, ev->role, le16_to_cpu(ev->handle), + le16_to_cpu(ev->interval), + le16_to_cpu(ev->latency), + le16_to_cpu(ev->supervision_timeout)); +} + +static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_le_enh_conn_complete *ev = data; + + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); + + le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, + &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), + le16_to_cpu(ev->interval), + le16_to_cpu(ev->latency), + le16_to_cpu(ev->supervision_timeout)); +} + +static void hci_le_pa_sync_lost_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_le_pa_sync_lost *ev = data; + u16 handle = le16_to_cpu(ev->handle); + struct hci_conn *conn; + + bt_dev_dbg(hdev, "sync handle 0x%4.4x", handle); + + hci_dev_lock(hdev); + + /* Delete the pa sync connection */ + conn = hci_conn_hash_lookup_pa_sync_handle(hdev, handle); + if (conn) { + clear_bit(HCI_CONN_BIG_SYNC, &conn->flags); + clear_bit(HCI_CONN_PA_SYNC, &conn->flags); + hci_disconn_cfm(conn, HCI_ERROR_REMOTE_USER_TERM); + hci_conn_del(conn); + } + + hci_dev_unlock(hdev); +} + +static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_evt_le_ext_adv_set_term *ev = data; + struct hci_conn *conn; + struct adv_info *adv, *n; + + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); + + /* The Bluetooth Core 5.3 specification clearly states that this event + * shall not be sent when the Host disables the advertising set. So in + * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. + * + * When the Host disables an advertising set, all cleanup is done via + * its command callback and not needed to be duplicated here. + */ + if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { + bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); + return; + } + + hci_dev_lock(hdev); + + adv = hci_find_adv_instance(hdev, ev->handle); + + if (ev->status) { + if (!adv) + goto unlock; + + /* Remove advertising as it has been terminated */ + hci_remove_adv_instance(hdev, ev->handle); + mgmt_advertising_removed(NULL, hdev, ev->handle); + + list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { + if (adv->enabled) + goto unlock; + } + + /* We are no longer advertising, clear HCI_LE_ADV */ + hci_dev_clear_flag(hdev, HCI_LE_ADV); + goto unlock; + } + + if (adv) + adv->enabled = false; + + conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); + if (conn) { + /* Store handle in the connection so the correct advertising + * instance can be re-enabled when disconnected. + */ + conn->adv_instance = ev->handle; + + if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || + bacmp(&conn->resp_addr, BDADDR_ANY)) + goto unlock; + + if (!ev->handle) { + bacpy(&conn->resp_addr, &hdev->random_addr); + goto unlock; + } + + if (adv) + bacpy(&conn->resp_addr, &adv->random_addr); + } + +unlock: + hci_dev_unlock(hdev); +} + +static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) +{ + struct hci_cp_le_pa_term_sync cp; + + memset(&cp, 0, sizeof(cp)); + cp.handle = handle; + + return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); +} + +static void hci_le_past_received_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_le_past_received *ev = data; + int mask = hdev->link_mode; + __u8 flags = 0; + struct hci_conn *pa_sync, *conn; + + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); + + hci_dev_lock(hdev); + + hci_dev_clear_flag(hdev, HCI_PA_SYNC); + + conn = hci_conn_hash_lookup_create_pa_sync(hdev); + if (!conn) { + bt_dev_err(hdev, + "Unable to find connection for dst %pMR sid 0x%2.2x", + &ev->bdaddr, ev->sid); + goto unlock; + } + + conn->sync_handle = le16_to_cpu(ev->sync_handle); + conn->sid = HCI_SID_INVALID; + + mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, PA_LINK, + &flags); + if (!(mask & HCI_LM_ACCEPT)) { + hci_le_pa_term_sync(hdev, ev->sync_handle); + goto unlock; + } + + if (!(flags & HCI_PROTO_DEFER)) + goto unlock; + + /* Add connection to indicate PA sync event */ + pa_sync = hci_conn_add_unset(hdev, PA_LINK, BDADDR_ANY, 0, + HCI_ROLE_SLAVE); + + if (IS_ERR(pa_sync)) + goto unlock; + + pa_sync->sync_handle = le16_to_cpu(ev->sync_handle); + + if (ev->status) { + set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); + + /* Notify iso layer */ + hci_connect_cfm(pa_sync, ev->status); + } + +unlock: hci_dev_unlock(hdev); } -static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, +static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_le_conn_update_complete *ev = (void *) skb->data; + struct hci_ev_le_conn_update_complete *ev = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); if (ev->status) return; @@ -4646,7 +6049,8 @@ static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, /* This function requires the caller holds hdev->lock */ static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, bdaddr_t *addr, - u8 addr_type, u8 adv_type) + u8 addr_type, bool addr_resolved, + u8 adv_type, u8 phy, u8 sec_phy) { struct hci_conn *conn; struct hci_conn_params *params; @@ -4655,14 +6059,17 @@ static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) return NULL; - /* Ignore if the device is blocked */ - if (hci_bdaddr_list_lookup(&hdev->blacklist, addr, addr_type)) + /* Ignore if the device is blocked or hdev is suspended */ + if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || + hdev->suspended) return NULL; /* Most controller will fail if we try to create new connections - * while we have an existing one in slave role. + * while we have an existing one in peripheral role. */ - if (hdev->conn_hash.le_num_slave > 0) + if (hdev->conn_hash.le_num_peripheral > 0 && + (hci_test_quirk(hdev, HCI_QUIRK_BROKEN_LE_STATES) || + !(hdev->le_states[3] & 0x10))) return NULL; /* If we're not connectable only connect devices that we have in @@ -4678,7 +6085,7 @@ static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, case HCI_AUTO_CONN_DIRECT: /* Only devices advertising with ADV_DIRECT_IND are * triggering a connection attempt. This is allowing - * incoming connections from slave devices. + * incoming connections from peripheral devices. */ if (adv_type != LE_ADV_DIRECT_IND) return NULL; @@ -4686,8 +6093,8 @@ static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, case HCI_AUTO_CONN_ALWAYS: /* Devices advertising with ADV_IND or ADV_DIRECT_IND * are triggering a connection attempt. This means - * that incoming connectioms from slave device are - * accepted and also outgoing connections to slave + * that incoming connections from peripheral device are + * accepted and also outgoing connections to peripheral * devices are established when found. */ break; @@ -4696,8 +6103,9 @@ static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, } } - conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW, - HCI_LE_AUTOCONN_TIMEOUT, HCI_ROLE_MASTER); + conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, + BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, + HCI_ROLE_MASTER, phy, sec_phy); if (!IS_ERR(conn)) { /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned * by higher layer that tried to connect, if no then @@ -4732,14 +6140,16 @@ static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, u8 bdaddr_type, bdaddr_t *direct_addr, - u8 direct_addr_type, s8 rssi, u8 *data, u8 len) + u8 direct_addr_type, u8 phy, u8 sec_phy, s8 rssi, + u8 *data, u8 len, bool ext_adv, bool ctl_time, + u64 instant) { struct discovery_state *d = &hdev->discovery; struct smp_irk *irk; struct hci_conn *conn; - bool match; + bool match, bdaddr_resolved; u32 flags; - u8 *ptr, real_len; + u8 *ptr; switch (type) { case LE_ADV_IND: @@ -4749,8 +6159,14 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, case LE_ADV_SCAN_RSP: break; default: - BT_ERR_RATELIMITED("Unknown advertising packet type: 0x%02x", - type); + bt_dev_err_ratelimited(hdev, "unknown advertising packet " + "type: 0x%02x", type); + return; + } + + if (len > max_adv_len(hdev)) { + bt_dev_err_ratelimited(hdev, + "adv larger than maximum supported"); return; } @@ -4765,33 +6181,35 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, break; } - real_len = ptr - data; - - /* Adjust for actual length */ - if (len != real_len) { - BT_ERR_RATELIMITED("%s advertising data length corrected", - hdev->name); - len = real_len; - } + /* Adjust for actual length. This handles the case when remote + * device is advertising with incorrect data length. + */ + len = ptr - data; /* If the direct address is present, then this report is from * a LE Direct Advertising Report event. In that case it is * important to see if the address is matching the local * controller address. + * + * If local privacy is not enable the controller shall not be + * generating such event since according to its documentation it is only + * valid for filter_policy 0x02 and 0x03, but the fact that it did + * generate LE Direct Advertising Report means it is probably broken and + * won't generate any other event which can potentially break + * auto-connect logic so in case local privacy is not enable this + * ignores the direct_addr so it works as a regular report. */ - if (direct_addr) { + if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr && + hci_dev_test_flag(hdev, HCI_PRIVACY)) { + direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, + &bdaddr_resolved); + /* Only resolvable random addresses are valid for these * kind of reports and others can be ignored. */ if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) return; - /* If the controller is not using resolvable random - * addresses, then this report can be ignored. - */ - if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) - return; - /* If the local IRK of the controller does not match * with the resolvable random address provided, then * this report can be ignored. @@ -4807,9 +6225,17 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, bdaddr_type = irk->addr_type; } - /* Check if we have been requested to connect to this device */ - conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type); - if (conn && type == LE_ADV_IND) { + bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); + + /* Check if we have been requested to connect to this device. + * + * direct_addr is set only for directed advertising reports (it is NULL + * for advertising reports) and is already verified to be RPA above. + */ + conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, + type, phy, sec_phy); + if (!ext_adv && conn && type == LE_ADV_IND && + len <= max_adv_len(hdev)) { /* Store report for later inclusion by * mgmt_device_connected */ @@ -4817,47 +6243,48 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, conn->le_adv_data_len = len; } + if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) + flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; + else + flags = 0; + + /* All scan results should be sent up for Mesh systems */ + if (hci_dev_test_flag(hdev, HCI_MESH)) { + mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, + rssi, flags, data, len, NULL, 0, instant); + return; + } + /* Passive scanning shouldn't trigger any device found events, * except for devices marked as CONN_REPORT for which we do send - * device found events. + * device found events, or advertisement monitoring requested. */ if (hdev->le_scan_type == LE_SCAN_PASSIVE) { if (type == LE_ADV_DIRECT_IND) return; if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, - bdaddr, bdaddr_type)) + bdaddr, bdaddr_type) && + idr_is_empty(&hdev->adv_monitors_idr)) return; - if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) - flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; - else - flags = 0; mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, - rssi, flags, data, len, NULL, 0); + rssi, flags, data, len, NULL, 0, 0); return; } - /* When receiving non-connectable or scannable undirected - * advertising reports, this means that the remote device is - * not connectable and then clearly indicate this in the - * device found event. - * - * When receiving a scan response, then there is no way to + /* When receiving a scan response, then there is no way to * know if the remote device is connectable or not. However * since scan responses are merged with a previously seen * advertising report, the flags field from that report * will be used. * - * In the really unlikely case that a controller get confused - * and just sends a scan response event, then it is marked as - * not connectable as well. + * In the unlikely case that a controller just sends a scan + * response event that doesn't match the pending report, then + * it is marked as a standalone SCAN_RSP. */ - if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND || - type == LE_ADV_SCAN_RSP) - flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; - else - flags = 0; + if (type == LE_ADV_SCAN_RSP) + flags = MGMT_DEV_FOUND_SCAN_RSP; /* If there's nothing pending either store the data from this * event or send an immediate device found event if the data @@ -4867,14 +6294,15 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, /* If the report will trigger a SCAN_REQ store it for * later merging. */ - if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { + if (!ext_adv && (type == LE_ADV_IND || + type == LE_ADV_SCAN_IND)) { store_pending_adv_report(hdev, bdaddr, bdaddr_type, rssi, flags, data, len); return; } mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, - rssi, flags, data, len, NULL, 0); + rssi, flags, data, len, NULL, 0, 0); return; } @@ -4893,12 +6321,13 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, d->last_adv_addr_type, NULL, d->last_adv_rssi, d->last_adv_flags, d->last_adv_data, - d->last_adv_data_len, NULL, 0); + d->last_adv_data_len, NULL, 0, 0); /* If the new report will trigger a SCAN_REQ store it for * later merging. */ - if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { + if (!ext_adv && (type == LE_ADV_IND || + type == LE_ADV_SCAN_IND)) { store_pending_adv_report(hdev, bdaddr, bdaddr_type, rssi, flags, data, len); return; @@ -4909,7 +6338,7 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, */ clear_pending_adv_report(hdev); mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, - rssi, flags, data, len, NULL, 0); + rssi, flags, data, len, NULL, 0, 0); return; } @@ -4919,39 +6348,260 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, */ mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, - d->last_adv_data, d->last_adv_data_len, data, len); + d->last_adv_data, d->last_adv_data_len, data, len, 0); clear_pending_adv_report(hdev); } -static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - u8 num_reports = skb->data[0]; - void *ptr = &skb->data[1]; + struct hci_ev_le_advertising_report *ev = data; + u64 instant = jiffies; + + if (!ev->num) + return; hci_dev_lock(hdev); - while (num_reports--) { - struct hci_ev_le_advertising_info *ev = ptr; + while (ev->num--) { + struct hci_ev_le_advertising_info *info; s8 rssi; - rssi = ev->data[ev->length]; - process_adv_report(hdev, ev->evt_type, &ev->bdaddr, - ev->bdaddr_type, NULL, 0, rssi, - ev->data, ev->length); + info = hci_le_ev_skb_pull(hdev, skb, + HCI_EV_LE_ADVERTISING_REPORT, + sizeof(*info)); + if (!info) + break; + + if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, + info->length + 1)) + break; + + if (info->length <= max_adv_len(hdev)) { + rssi = info->data[info->length]; + process_adv_report(hdev, info->type, &info->bdaddr, + info->bdaddr_type, NULL, 0, + HCI_ADV_PHY_1M, 0, rssi, + info->data, info->length, false, + false, instant); + } else { + bt_dev_err(hdev, "Dropping invalid advertising data"); + } + } + + hci_dev_unlock(hdev); +} + +static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) +{ + u16 pdu_type = evt_type & ~LE_EXT_ADV_DATA_STATUS_MASK; + + if (!pdu_type) + return LE_ADV_NONCONN_IND; + + if (evt_type & LE_EXT_ADV_LEGACY_PDU) { + switch (evt_type) { + case LE_LEGACY_ADV_IND: + return LE_ADV_IND; + case LE_LEGACY_ADV_DIRECT_IND: + return LE_ADV_DIRECT_IND; + case LE_LEGACY_ADV_SCAN_IND: + return LE_ADV_SCAN_IND; + case LE_LEGACY_NONCONN_IND: + return LE_ADV_NONCONN_IND; + case LE_LEGACY_SCAN_RSP_ADV: + case LE_LEGACY_SCAN_RSP_ADV_SCAN: + return LE_ADV_SCAN_RSP; + } + + goto invalid; + } + + if (evt_type & LE_EXT_ADV_CONN_IND) { + if (evt_type & LE_EXT_ADV_DIRECT_IND) + return LE_ADV_DIRECT_IND; + + return LE_ADV_IND; + } + + if (evt_type & LE_EXT_ADV_SCAN_RSP) + return LE_ADV_SCAN_RSP; + + if (evt_type & LE_EXT_ADV_SCAN_IND) + return LE_ADV_SCAN_IND; + + if (evt_type & LE_EXT_ADV_DIRECT_IND) + return LE_ADV_NONCONN_IND; + +invalid: + bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", + evt_type); + + return LE_ADV_INVALID; +} + +static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_le_ext_adv_report *ev = data; + u64 instant = jiffies; + + if (!ev->num) + return; + + hci_dev_lock(hdev); + + while (ev->num--) { + struct hci_ev_le_ext_adv_info *info; + u8 legacy_evt_type; + u16 evt_type; - ptr += sizeof(*ev) + ev->length + 1; + info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, + sizeof(*info)); + if (!info) + break; + + if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, + info->length)) + break; + + evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; + legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); + + if (hci_test_quirk(hdev, + HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_PHY)) { + info->primary_phy &= 0x1f; + info->secondary_phy &= 0x1f; + } + + /* Check if PA Sync is pending and if the hci_conn SID has not + * been set update it. + */ + if (hci_dev_test_flag(hdev, HCI_PA_SYNC)) { + struct hci_conn *conn; + + conn = hci_conn_hash_lookup_create_pa_sync(hdev); + if (conn && conn->sid == HCI_SID_INVALID) + conn->sid = info->sid; + } + + if (legacy_evt_type != LE_ADV_INVALID) { + process_adv_report(hdev, legacy_evt_type, &info->bdaddr, + info->bdaddr_type, NULL, 0, + info->primary_phy, + info->secondary_phy, + info->rssi, info->data, info->length, + !(evt_type & LE_EXT_ADV_LEGACY_PDU), + false, instant); + } } hci_dev_unlock(hdev); } -static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, +static void hci_le_pa_sync_established_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_le_pa_sync_established *ev = data; + int mask = hdev->link_mode; + __u8 flags = 0; + struct hci_conn *pa_sync, *conn; + + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); + + hci_dev_lock(hdev); + + hci_dev_clear_flag(hdev, HCI_PA_SYNC); + + conn = hci_conn_hash_lookup_create_pa_sync(hdev); + if (!conn) { + bt_dev_err(hdev, + "Unable to find connection for dst %pMR sid 0x%2.2x", + &ev->bdaddr, ev->sid); + goto unlock; + } + + clear_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags); + + conn->sync_handle = le16_to_cpu(ev->handle); + conn->sid = HCI_SID_INVALID; + + mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, PA_LINK, + &flags); + if (!(mask & HCI_LM_ACCEPT)) { + hci_le_pa_term_sync(hdev, ev->handle); + goto unlock; + } + + if (!(flags & HCI_PROTO_DEFER)) + goto unlock; + + /* Add connection to indicate PA sync event */ + pa_sync = hci_conn_add_unset(hdev, PA_LINK, BDADDR_ANY, 0, + HCI_ROLE_SLAVE); + + if (IS_ERR(pa_sync)) + goto unlock; + + pa_sync->sync_handle = le16_to_cpu(ev->handle); + + if (ev->status) { + set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); + + /* Notify iso layer */ + hci_connect_cfm(pa_sync, ev->status); + } + +unlock: + hci_dev_unlock(hdev); +} + +static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_ev_le_per_adv_report *ev = data; + int mask = hdev->link_mode; + __u8 flags = 0; + struct hci_conn *pa_sync; + + bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); + + hci_dev_lock(hdev); + + mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, PA_LINK, &flags); + if (!(mask & HCI_LM_ACCEPT)) + goto unlock; + + if (!(flags & HCI_PROTO_DEFER)) + goto unlock; + + pa_sync = hci_conn_hash_lookup_pa_sync_handle + (hdev, + le16_to_cpu(ev->sync_handle)); + + if (!pa_sync) + goto unlock; + + if (ev->data_status == LE_PA_DATA_COMPLETE && + !test_and_set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags)) { + /* Notify iso layer */ + hci_connect_cfm(pa_sync, 0); + + /* Notify MGMT layer */ + mgmt_device_connected(hdev, pa_sync, NULL, 0); + } + +unlock: + hci_dev_unlock(hdev); +} + +static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_le_remote_feat_complete *ev = (void *)skb->data; + struct hci_ev_le_remote_feat_complete *ev = data; struct hci_conn *conn; - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); hci_dev_lock(hdev); @@ -4963,7 +6613,7 @@ static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, if (conn->state == BT_CONFIG) { __u8 status; - /* If the local controller supports slave-initiated + /* If the local controller supports peripheral-initiated * features exchange, but the remote controller does * not, then it is possible that the error code 0x1a * for unsupported remote feature gets returned. @@ -4972,30 +6622,30 @@ static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, * transition into connected state and mark it as * successful. */ - if ((hdev->le_features[0] & HCI_LE_SLAVE_FEATURES) && - !conn->out && ev->status == 0x1a) + if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && + (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) status = 0x00; else status = ev->status; conn->state = BT_CONNECTED; hci_connect_cfm(conn, status); - hci_conn_drop(conn); } } hci_dev_unlock(hdev); } -static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_le_ltk_req *ev = (void *) skb->data; + struct hci_ev_le_ltk_req *ev = data; struct hci_cp_le_ltk_reply cp; struct hci_cp_le_ltk_neg_reply neg; struct hci_conn *conn; struct smp_ltk *ltk; - BT_DBG("%s handle 0x%4.4x", hdev->name, __le16_to_cpu(ev->handle)); + bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); hci_dev_lock(hdev); @@ -5063,14 +6713,16 @@ static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, &cp); } -static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, +static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data; + struct hci_ev_le_remote_conn_param_req *ev = data; struct hci_cp_le_conn_param_req_reply cp; struct hci_conn *hcon; u16 handle, min, max, latency, timeout; + bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); + handle = le16_to_cpu(ev->handle); min = le16_to_cpu(ev->interval_min); max = le16_to_cpu(ev->interval_max); @@ -5082,6 +6734,10 @@ static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, return send_conn_param_neg_reply(hdev, handle, HCI_ERROR_UNKNOWN_CONN_ID); + if (max > hcon->le_conn_max_interval) + return send_conn_param_neg_reply(hdev, handle, + HCI_ERROR_INVALID_LL_PARAMS); + if (hci_check_conn_params(min, max, latency, timeout)) return send_conn_param_neg_reply(hdev, handle, HCI_ERROR_INVALID_LL_PARAMS); @@ -5100,7 +6756,7 @@ static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, params->conn_latency = latency; params->supervision_timeout = timeout; store_hint = 0x01; - } else{ + } else { store_hint = 0x00; } @@ -5121,322 +6777,1002 @@ static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); } -static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, +static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { - u8 num_reports = skb->data[0]; - void *ptr = &skb->data[1]; + struct hci_ev_le_direct_adv_report *ev = data; + u64 instant = jiffies; + int i; - hci_dev_lock(hdev); + if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, + flex_array_size(ev, info, ev->num))) + return; + + if (!ev->num) + return; - while (num_reports--) { - struct hci_ev_le_direct_adv_info *ev = ptr; + hci_dev_lock(hdev); - process_adv_report(hdev, ev->evt_type, &ev->bdaddr, - ev->bdaddr_type, &ev->direct_addr, - ev->direct_addr_type, ev->rssi, NULL, 0); + for (i = 0; i < ev->num; i++) { + struct hci_ev_le_direct_adv_info *info = &ev->info[i]; - ptr += sizeof(*ev); + process_adv_report(hdev, info->type, &info->bdaddr, + info->bdaddr_type, &info->direct_addr, + info->direct_addr_type, HCI_ADV_PHY_1M, 0, + info->rssi, NULL, 0, false, false, instant); } hci_dev_unlock(hdev); } -static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_ev_le_meta *le_ev = (void *) skb->data; + struct hci_ev_le_phy_update_complete *ev = data; + struct hci_conn *conn; - skb_pull(skb, sizeof(*le_ev)); + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); - switch (le_ev->subevent) { - case HCI_EV_LE_CONN_COMPLETE: - hci_le_conn_complete_evt(hdev, skb); - break; + if (ev->status) + return; - case HCI_EV_LE_CONN_UPDATE_COMPLETE: - hci_le_conn_update_complete_evt(hdev, skb); - break; + hci_dev_lock(hdev); - case HCI_EV_LE_ADVERTISING_REPORT: - hci_le_adv_report_evt(hdev, skb); - break; + conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); + if (!conn) + goto unlock; - case HCI_EV_LE_REMOTE_FEAT_COMPLETE: - hci_le_remote_feat_complete_evt(hdev, skb); - break; + conn->le_tx_phy = ev->tx_phy; + conn->le_rx_phy = ev->rx_phy; - case HCI_EV_LE_LTK_REQ: - hci_le_ltk_request_evt(hdev, skb); - break; +unlock: + hci_dev_unlock(hdev); +} - case HCI_EV_LE_REMOTE_CONN_PARAM_REQ: - hci_le_remote_conn_param_req_evt(hdev, skb); - break; +static void hci_le_cis_established_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_evt_le_cis_established *ev = data; + struct hci_conn *conn; + struct bt_iso_qos *qos; + bool pending = false; + u16 handle = __le16_to_cpu(ev->handle); + u32 c_sdu_interval, p_sdu_interval; - case HCI_EV_LE_DIRECT_ADV_REPORT: - hci_le_direct_adv_report_evt(hdev, skb); - break; + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); - default: + hci_dev_lock(hdev); + + conn = hci_conn_hash_lookup_handle(hdev, handle); + if (!conn) { + bt_dev_err(hdev, + "Unable to find connection with handle 0x%4.4x", + handle); + goto unlock; + } + + if (conn->type != CIS_LINK) { + bt_dev_err(hdev, + "Invalid connection link type handle 0x%4.4x", + handle); + goto unlock; + } + + qos = &conn->iso_qos; + + pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); + + /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 6, Part G + * page 3075: + * Transport_Latency_C_To_P = CIG_Sync_Delay + (FT_C_To_P) × + * ISO_Interval + SDU_Interval_C_To_P + * ... + * SDU_Interval = (CIG_Sync_Delay + (FT) x ISO_Interval) - + * Transport_Latency + */ + c_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + + (ev->c_ft * le16_to_cpu(ev->interval) * 1250)) - + get_unaligned_le24(ev->c_latency); + p_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + + (ev->p_ft * le16_to_cpu(ev->interval) * 1250)) - + get_unaligned_le24(ev->p_latency); + + switch (conn->role) { + case HCI_ROLE_SLAVE: + qos->ucast.in.interval = c_sdu_interval; + qos->ucast.out.interval = p_sdu_interval; + /* Convert Transport Latency (us) to Latency (msec) */ + qos->ucast.in.latency = + DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), + 1000); + qos->ucast.out.latency = + DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), + 1000); + qos->ucast.in.sdu = ev->c_bn ? le16_to_cpu(ev->c_mtu) : 0; + qos->ucast.out.sdu = ev->p_bn ? le16_to_cpu(ev->p_mtu) : 0; + qos->ucast.in.phy = ev->c_phy; + qos->ucast.out.phy = ev->p_phy; + break; + case HCI_ROLE_MASTER: + qos->ucast.in.interval = p_sdu_interval; + qos->ucast.out.interval = c_sdu_interval; + /* Convert Transport Latency (us) to Latency (msec) */ + qos->ucast.out.latency = + DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), + 1000); + qos->ucast.in.latency = + DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), + 1000); + qos->ucast.out.sdu = ev->c_bn ? le16_to_cpu(ev->c_mtu) : 0; + qos->ucast.in.sdu = ev->p_bn ? le16_to_cpu(ev->p_mtu) : 0; + qos->ucast.out.phy = ev->c_phy; + qos->ucast.in.phy = ev->p_phy; break; } + + if (!ev->status) { + conn->state = BT_CONNECTED; + hci_debugfs_create_conn(conn); + hci_conn_add_sysfs(conn); + hci_iso_setup_path(conn); + goto unlock; + } + + conn->state = BT_CLOSED; + hci_connect_cfm(conn, ev->status); + hci_conn_del(conn); + +unlock: + if (pending) + hci_le_create_cis_pending(hdev); + + hci_dev_unlock(hdev); } -static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, - u8 event, struct sk_buff *skb) +static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) { - struct hci_ev_cmd_complete *ev; - struct hci_event_hdr *hdr; + struct hci_cp_le_reject_cis cp; - if (!skb) - return false; + memset(&cp, 0, sizeof(cp)); + cp.handle = handle; + cp.reason = HCI_ERROR_REJ_BAD_ADDR; + hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); +} - if (skb->len < sizeof(*hdr)) { - BT_ERR("Too short HCI event"); - return false; - } +static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) +{ + struct hci_cp_le_accept_cis cp; - hdr = (void *) skb->data; - skb_pull(skb, HCI_EVENT_HDR_SIZE); + memset(&cp, 0, sizeof(cp)); + cp.handle = handle; + hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); +} - if (event) { - if (hdr->evt != event) - return false; - return true; +static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_evt_le_cis_req *ev = data; + u16 acl_handle, cis_handle; + struct hci_conn *acl, *cis; + int mask; + __u8 flags = 0; + + acl_handle = __le16_to_cpu(ev->acl_handle); + cis_handle = __le16_to_cpu(ev->cis_handle); + + bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", + acl_handle, cis_handle, ev->cig_id, ev->cis_id); + + hci_dev_lock(hdev); + + acl = hci_conn_hash_lookup_handle(hdev, acl_handle); + if (!acl) + goto unlock; + + mask = hci_proto_connect_ind(hdev, &acl->dst, CIS_LINK, &flags); + if (!(mask & HCI_LM_ACCEPT)) { + hci_le_reject_cis(hdev, ev->cis_handle); + goto unlock; } - if (hdr->evt != HCI_EV_CMD_COMPLETE) { - BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); - return false; + cis = hci_conn_hash_lookup_handle(hdev, cis_handle); + if (!cis) { + cis = hci_conn_add(hdev, CIS_LINK, &acl->dst, acl->dst_type, + HCI_ROLE_SLAVE, cis_handle); + if (IS_ERR(cis)) { + hci_le_reject_cis(hdev, ev->cis_handle); + goto unlock; + } } - if (skb->len < sizeof(*ev)) { - BT_ERR("Too short cmd_complete event"); - return false; + cis->iso_qos.ucast.cig = ev->cig_id; + cis->iso_qos.ucast.cis = ev->cis_id; + + if (!(flags & HCI_PROTO_DEFER)) { + hci_le_accept_cis(hdev, ev->cis_handle); + } else { + cis->state = BT_CONNECT2; + hci_connect_cfm(cis, 0); } - ev = (void *) skb->data; - skb_pull(skb, sizeof(*ev)); +unlock: + hci_dev_unlock(hdev); +} - if (opcode != __le16_to_cpu(ev->opcode)) { - BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, - __le16_to_cpu(ev->opcode)); - return false; +static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) +{ + u8 handle = PTR_UINT(data); + + return hci_le_terminate_big_sync(hdev, handle, + HCI_ERROR_LOCAL_HOST_TERM); +} + +static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_evt_le_create_big_complete *ev = data; + struct hci_conn *conn; + __u8 i = 0; + + BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + + if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, + flex_array_size(ev, bis_handle, ev->num_bis))) + return; + + hci_dev_lock(hdev); + + /* Connect all BISes that are bound to the BIG */ + while ((conn = hci_conn_hash_lookup_big_state(hdev, ev->handle, + BT_BOUND, + HCI_ROLE_MASTER))) { + if (ev->status) { + hci_connect_cfm(conn, ev->status); + hci_conn_del(conn); + continue; + } + + if (hci_conn_set_handle(conn, + __le16_to_cpu(ev->bis_handle[i++]))) + continue; + + conn->state = BT_CONNECTED; + set_bit(HCI_CONN_BIG_CREATED, &conn->flags); + hci_debugfs_create_conn(conn); + hci_conn_add_sysfs(conn); + hci_iso_setup_path(conn); } - return true; + if (!ev->status && !i) + /* If no BISes have been connected for the BIG, + * terminate. This is in case all bound connections + * have been closed before the BIG creation + * has completed. + */ + hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, + UINT_PTR(ev->handle), NULL); + + hci_dev_unlock(hdev); } -void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) +static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) { - struct hci_event_hdr *hdr = (void *) skb->data; - hci_req_complete_t req_complete = NULL; - hci_req_complete_skb_t req_complete_skb = NULL; - struct sk_buff *orig_skb = NULL; - u8 status = 0, event = hdr->evt, req_evt = 0; - u16 opcode = HCI_OP_NOP; + struct hci_evt_le_big_sync_established *ev = data; + struct hci_conn *bis, *conn; + int i; - if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->hci.req_event == event) { - struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data; - opcode = __le16_to_cpu(cmd_hdr->opcode); - hci_req_cmd_complete(hdev, opcode, status, &req_complete, - &req_complete_skb); - req_evt = event; + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); + + if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABLISHED, + flex_array_size(ev, bis, ev->num_bis))) + return; + + hci_dev_lock(hdev); + + conn = hci_conn_hash_lookup_big_sync_pend(hdev, ev->handle, + ev->num_bis); + if (!conn) { + bt_dev_err(hdev, + "Unable to find connection for big 0x%2.2x", + ev->handle); + goto unlock; } - /* If it looks like we might end up having to call - * req_complete_skb, store a pristine copy of the skb since the - * various handlers may modify the original one through - * skb_pull() calls, etc. + clear_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags); + + conn->num_bis = 0; + memset(conn->bis, 0, sizeof(conn->num_bis)); + + for (i = 0; i < ev->num_bis; i++) { + u16 handle = le16_to_cpu(ev->bis[i]); + __le32 interval; + + bis = hci_conn_hash_lookup_handle(hdev, handle); + if (!bis) { + if (handle > HCI_CONN_HANDLE_MAX) { + bt_dev_dbg(hdev, "ignore too large handle %u", handle); + continue; + } + bis = hci_conn_add(hdev, BIS_LINK, BDADDR_ANY, 0, + HCI_ROLE_SLAVE, handle); + if (IS_ERR(bis)) + continue; + } + + if (ev->status != 0x42) + /* Mark PA sync as established */ + set_bit(HCI_CONN_PA_SYNC, &bis->flags); + + bis->sync_handle = conn->sync_handle; + bis->iso_qos.bcast.big = ev->handle; + memset(&interval, 0, sizeof(interval)); + memcpy(&interval, ev->latency, sizeof(ev->latency)); + bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); + /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ + bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; + bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); + + if (!ev->status) { + bis->state = BT_CONNECTED; + set_bit(HCI_CONN_BIG_SYNC, &bis->flags); + hci_debugfs_create_conn(bis); + hci_conn_add_sysfs(bis); + hci_iso_setup_path(bis); + } + } + + /* In case BIG sync failed, notify each failed connection to + * the user after all hci connections have been added */ - if (req_complete_skb || event == HCI_EV_CMD_STATUS || - event == HCI_EV_CMD_COMPLETE) - orig_skb = skb_clone(skb, GFP_KERNEL); + if (ev->status) + for (i = 0; i < ev->num_bis; i++) { + u16 handle = le16_to_cpu(ev->bis[i]); - skb_pull(skb, HCI_EVENT_HDR_SIZE); + bis = hci_conn_hash_lookup_handle(hdev, handle); + if (!bis) + continue; - switch (event) { - case HCI_EV_INQUIRY_COMPLETE: - hci_inquiry_complete_evt(hdev, skb); - break; + set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); + hci_connect_cfm(bis, ev->status); + } - case HCI_EV_INQUIRY_RESULT: - hci_inquiry_result_evt(hdev, skb); - break; +unlock: + hci_dev_unlock(hdev); +} - case HCI_EV_CONN_COMPLETE: - hci_conn_complete_evt(hdev, skb); - break; +static void hci_le_big_sync_lost_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_evt_le_big_sync_lost *ev = data; + struct hci_conn *bis; + bool mgmt_conn = false; - case HCI_EV_CONN_REQUEST: - hci_conn_request_evt(hdev, skb); - break; + bt_dev_dbg(hdev, "big handle 0x%2.2x", ev->handle); - case HCI_EV_DISCONN_COMPLETE: - hci_disconn_complete_evt(hdev, skb); - break; + hci_dev_lock(hdev); - case HCI_EV_AUTH_COMPLETE: - hci_auth_complete_evt(hdev, skb); - break; + /* Delete each bis connection */ + while ((bis = hci_conn_hash_lookup_big_state(hdev, ev->handle, + BT_CONNECTED, + HCI_ROLE_SLAVE))) { + if (!mgmt_conn) { + mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, + &bis->flags); + mgmt_device_disconnected(hdev, &bis->dst, bis->type, + bis->dst_type, ev->reason, + mgmt_conn); + } - case HCI_EV_REMOTE_NAME: - hci_remote_name_evt(hdev, skb); - break; + clear_bit(HCI_CONN_BIG_SYNC, &bis->flags); + hci_disconn_cfm(bis, ev->reason); + hci_conn_del(bis); + } - case HCI_EV_ENCRYPT_CHANGE: - hci_encrypt_change_evt(hdev, skb); - break; + hci_dev_unlock(hdev); +} - case HCI_EV_CHANGE_LINK_KEY_COMPLETE: - hci_change_link_key_complete_evt(hdev, skb); - break; +static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + struct hci_evt_le_big_info_adv_report *ev = data; + int mask = hdev->link_mode; + __u8 flags = 0; + struct hci_conn *pa_sync; - case HCI_EV_REMOTE_FEATURES: - hci_remote_features_evt(hdev, skb); - break; + bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); - case HCI_EV_CMD_COMPLETE: - hci_cmd_complete_evt(hdev, skb, &opcode, &status, - &req_complete, &req_complete_skb); - break; + hci_dev_lock(hdev); - case HCI_EV_CMD_STATUS: - hci_cmd_status_evt(hdev, skb, &opcode, &status, &req_complete, - &req_complete_skb); - break; + mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, BIS_LINK, &flags); + if (!(mask & HCI_LM_ACCEPT)) + goto unlock; - case HCI_EV_HARDWARE_ERROR: - hci_hardware_error_evt(hdev, skb); - break; + if (!(flags & HCI_PROTO_DEFER)) + goto unlock; - case HCI_EV_ROLE_CHANGE: - hci_role_change_evt(hdev, skb); - break; + pa_sync = hci_conn_hash_lookup_pa_sync_handle + (hdev, + le16_to_cpu(ev->sync_handle)); - case HCI_EV_NUM_COMP_PKTS: - hci_num_comp_pkts_evt(hdev, skb); - break; + if (!pa_sync) + goto unlock; - case HCI_EV_MODE_CHANGE: - hci_mode_change_evt(hdev, skb); - break; + pa_sync->iso_qos.bcast.encryption = ev->encryption; - case HCI_EV_PIN_CODE_REQ: - hci_pin_code_request_evt(hdev, skb); - break; + /* Notify iso layer */ + hci_connect_cfm(pa_sync, 0); - case HCI_EV_LINK_KEY_REQ: - hci_link_key_request_evt(hdev, skb); - break; +unlock: + hci_dev_unlock(hdev); +} - case HCI_EV_LINK_KEY_NOTIFY: - hci_link_key_notify_evt(hdev, skb); - break; +static void hci_le_read_all_remote_features_evt(struct hci_dev *hdev, + void *data, struct sk_buff *skb) +{ + struct hci_evt_le_read_all_remote_features_complete *ev = data; + struct hci_conn *conn; - case HCI_EV_CLOCK_OFFSET: - hci_clock_offset_evt(hdev, skb); - break; + bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); - case HCI_EV_PKT_TYPE_CHANGE: - hci_pkt_type_change_evt(hdev, skb); - break; + hci_dev_lock(hdev); - case HCI_EV_PSCAN_REP_MODE: - hci_pscan_rep_mode_evt(hdev, skb); - break; + conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); + if (!conn) + goto unlock; - case HCI_EV_INQUIRY_RESULT_WITH_RSSI: - hci_inquiry_result_with_rssi_evt(hdev, skb); - break; + if (!ev->status) + memcpy(conn->le_features, ev->features, 248); - case HCI_EV_REMOTE_EXT_FEATURES: - hci_remote_ext_features_evt(hdev, skb); - break; + if (conn->state == BT_CONFIG) { + __u8 status; - case HCI_EV_SYNC_CONN_COMPLETE: - hci_sync_conn_complete_evt(hdev, skb); - break; + /* If the local controller supports peripheral-initiated + * features exchange, but the remote controller does + * not, then it is possible that the error code 0x1a + * for unsupported remote feature gets returned. + * + * In this specific case, allow the connection to + * transition into connected state and mark it as + * successful. + */ + if (!conn->out && + ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && + (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) + status = 0x00; + else + status = ev->status; - case HCI_EV_EXTENDED_INQUIRY_RESULT: - hci_extended_inquiry_result_evt(hdev, skb); - break; + conn->state = BT_CONNECTED; + hci_connect_cfm(conn, status); + } - case HCI_EV_KEY_REFRESH_COMPLETE: - hci_key_refresh_complete_evt(hdev, skb); - break; +unlock: + hci_dev_unlock(hdev); +} - case HCI_EV_IO_CAPA_REQUEST: - hci_io_capa_request_evt(hdev, skb); - break; +#define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ +[_op] = { \ + .func = _func, \ + .min_len = _min_len, \ + .max_len = _max_len, \ +} + +#define HCI_LE_EV(_op, _func, _len) \ + HCI_LE_EV_VL(_op, _func, _len, _len) + +#define HCI_LE_EV_STATUS(_op, _func) \ + HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) + +/* Entries in this table shall have their position according to the subevent + * opcode they handle so the use of the macros above is recommend since it does + * attempt to initialize at its proper index using Designated Initializers that + * way events without a callback function can be omitted. + */ +static const struct hci_le_ev { + void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); + u16 min_len; + u16 max_len; +} hci_le_ev_table[U8_MAX + 1] = { + /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ + HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, + sizeof(struct hci_ev_le_conn_complete)), + /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ + HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, + sizeof(struct hci_ev_le_advertising_report), + HCI_MAX_EVENT_SIZE), + /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ + HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, + hci_le_conn_update_complete_evt, + sizeof(struct hci_ev_le_conn_update_complete)), + /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ + HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, + hci_le_remote_feat_complete_evt, + sizeof(struct hci_ev_le_remote_feat_complete)), + /* [0x05 = HCI_EV_LE_LTK_REQ] */ + HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, + sizeof(struct hci_ev_le_ltk_req)), + /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ + HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, + hci_le_remote_conn_param_req_evt, + sizeof(struct hci_ev_le_remote_conn_param_req)), + /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ + HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, + hci_le_enh_conn_complete_evt, + sizeof(struct hci_ev_le_enh_conn_complete)), + /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ + HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, + sizeof(struct hci_ev_le_direct_adv_report), + HCI_MAX_EVENT_SIZE), + /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ + HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, + sizeof(struct hci_ev_le_phy_update_complete)), + /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ + HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, + sizeof(struct hci_ev_le_ext_adv_report), + HCI_MAX_EVENT_SIZE), + /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ + HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, + hci_le_pa_sync_established_evt, + sizeof(struct hci_ev_le_pa_sync_established)), + /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ + HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, + hci_le_per_adv_report_evt, + sizeof(struct hci_ev_le_per_adv_report), + HCI_MAX_EVENT_SIZE), + /* [0x10 = HCI_EV_LE_PA_SYNC_LOST] */ + HCI_LE_EV(HCI_EV_LE_PA_SYNC_LOST, hci_le_pa_sync_lost_evt, + sizeof(struct hci_ev_le_pa_sync_lost)), + /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ + HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, + sizeof(struct hci_evt_le_ext_adv_set_term)), + /* [0x18 = HCI_EVT_LE_PAST_RECEIVED] */ + HCI_LE_EV(HCI_EV_LE_PAST_RECEIVED, + hci_le_past_received_evt, + sizeof(struct hci_ev_le_past_received)), + /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ + HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_established_evt, + sizeof(struct hci_evt_le_cis_established)), + /* [0x1a = HCI_EVT_LE_CIS_REQ] */ + HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, + sizeof(struct hci_evt_le_cis_req)), + /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ + HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, + hci_le_create_big_complete_evt, + sizeof(struct hci_evt_le_create_big_complete), + HCI_MAX_EVENT_SIZE), + /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABLISHED] */ + HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABLISHED, + hci_le_big_sync_established_evt, + sizeof(struct hci_evt_le_big_sync_established), + HCI_MAX_EVENT_SIZE), + /* [0x1e = HCI_EVT_LE_BIG_SYNC_LOST] */ + HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_LOST, + hci_le_big_sync_lost_evt, + sizeof(struct hci_evt_le_big_sync_lost), + HCI_MAX_EVENT_SIZE), + /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ + HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, + hci_le_big_info_adv_report_evt, + sizeof(struct hci_evt_le_big_info_adv_report), + HCI_MAX_EVENT_SIZE), + /* [0x2b = HCI_EVT_LE_ALL_REMOTE_FEATURES_COMPLETE] */ + HCI_LE_EV_VL(HCI_EVT_LE_ALL_REMOTE_FEATURES_COMPLETE, + hci_le_read_all_remote_features_evt, + sizeof(struct + hci_evt_le_read_all_remote_features_complete), + HCI_MAX_EVENT_SIZE), +}; + +static void hci_le_meta_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb, u16 *opcode, u8 *status, + hci_req_complete_t *req_complete, + hci_req_complete_skb_t *req_complete_skb) +{ + struct hci_ev_le_meta *ev = data; + const struct hci_le_ev *subev; + + bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); + + /* Only match event if command OGF is for LE */ + if (hdev->req_skb && + (hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 || + hci_skb_opcode(hdev->req_skb) == HCI_OP_NOP) && + hci_skb_event(hdev->req_skb) == ev->subevent) { + *opcode = hci_skb_opcode(hdev->req_skb); + hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, + req_complete_skb); + } - case HCI_EV_IO_CAPA_REPLY: - hci_io_capa_reply_evt(hdev, skb); - break; + subev = &hci_le_ev_table[ev->subevent]; + if (!subev->func) + return; - case HCI_EV_USER_CONFIRM_REQUEST: - hci_user_confirm_request_evt(hdev, skb); - break; + if (skb->len < subev->min_len) { + bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", + ev->subevent, skb->len, subev->min_len); + return; + } - case HCI_EV_USER_PASSKEY_REQUEST: - hci_user_passkey_request_evt(hdev, skb); - break; + /* Just warn if the length is over max_len size it still be + * possible to partially parse the event so leave to callback to + * decide if that is acceptable. + */ + if (skb->len > subev->max_len) + bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", + ev->subevent, skb->len, subev->max_len); + data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); + if (!data) + return; - case HCI_EV_USER_PASSKEY_NOTIFY: - hci_user_passkey_notify_evt(hdev, skb); - break; + subev->func(hdev, data, skb); +} - case HCI_EV_KEYPRESS_NOTIFY: - hci_keypress_notify_evt(hdev, skb); - break; +static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, + u8 event, struct sk_buff *skb) +{ + struct hci_ev_cmd_complete *ev; + struct hci_event_hdr *hdr; - case HCI_EV_SIMPLE_PAIR_COMPLETE: - hci_simple_pair_complete_evt(hdev, skb); - break; + if (!skb) + return false; - case HCI_EV_REMOTE_HOST_FEATURES: - hci_remote_host_features_evt(hdev, skb); - break; + hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); + if (!hdr) + return false; - case HCI_EV_LE_META: - hci_le_meta_evt(hdev, skb); - break; + if (event) { + if (hdr->evt != event) + return false; + return true; + } - case HCI_EV_REMOTE_OOB_DATA_REQUEST: - hci_remote_oob_data_request_evt(hdev, skb); - break; + /* Check if request ended in Command Status - no way to retrieve + * any extra parameters in this case. + */ + if (hdr->evt == HCI_EV_CMD_STATUS) + return false; -#if IS_ENABLED(CONFIG_BT_HS) - case HCI_EV_CHANNEL_SELECTED: - hci_chan_selected_evt(hdev, skb); - break; + if (hdr->evt != HCI_EV_CMD_COMPLETE) { + bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", + hdr->evt); + return false; + } - case HCI_EV_PHY_LINK_COMPLETE: - hci_phy_link_complete_evt(hdev, skb); - break; + ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); + if (!ev) + return false; - case HCI_EV_LOGICAL_LINK_COMPLETE: - hci_loglink_complete_evt(hdev, skb); - break; + if (opcode != __le16_to_cpu(ev->opcode)) { + BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, + __le16_to_cpu(ev->opcode)); + return false; + } - case HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE: - hci_disconn_loglink_complete_evt(hdev, skb); - break; + return true; +} - case HCI_EV_DISCONN_PHY_LINK_COMPLETE: - hci_disconn_phylink_complete_evt(hdev, skb); - break; -#endif +static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, + struct sk_buff *skb) +{ + struct hci_ev_le_advertising_info *adv; + struct hci_ev_le_direct_adv_info *direct_adv; + struct hci_ev_le_ext_adv_info *ext_adv; + const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; + const struct hci_ev_conn_request *conn_request = (void *)skb->data; - case HCI_EV_NUM_COMP_BLOCKS: - hci_num_comp_blocks_evt(hdev, skb); - break; + hci_dev_lock(hdev); - default: - BT_DBG("%s event 0x%2.2x", hdev->name, event); - break; + /* If we are currently suspended and this is the first BT event seen, + * save the wake reason associated with the event. + */ + if (!hdev->suspended || hdev->wake_reason) + goto unlock; + + /* Default to remote wake. Values for wake_reason are documented in the + * Bluez mgmt api docs. + */ + hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; + + /* Once configured for remote wakeup, we should only wake up for + * reconnections. It's useful to see which device is waking us up so + * keep track of the bdaddr of the connection event that woke us up. + */ + if (event == HCI_EV_CONN_REQUEST) { + bacpy(&hdev->wake_addr, &conn_request->bdaddr); + hdev->wake_addr_type = BDADDR_BREDR; + } else if (event == HCI_EV_CONN_COMPLETE) { + bacpy(&hdev->wake_addr, &conn_complete->bdaddr); + hdev->wake_addr_type = BDADDR_BREDR; + } else if (event == HCI_EV_LE_META) { + struct hci_ev_le_meta *le_ev = (void *)skb->data; + u8 subevent = le_ev->subevent; + u8 *ptr = &skb->data[sizeof(*le_ev)]; + u8 num_reports = *ptr; + + if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || + subevent == HCI_EV_LE_DIRECT_ADV_REPORT || + subevent == HCI_EV_LE_EXT_ADV_REPORT) && + num_reports) { + adv = (void *)(ptr + 1); + direct_adv = (void *)(ptr + 1); + ext_adv = (void *)(ptr + 1); + + switch (subevent) { + case HCI_EV_LE_ADVERTISING_REPORT: + bacpy(&hdev->wake_addr, &adv->bdaddr); + hdev->wake_addr_type = adv->bdaddr_type; + break; + case HCI_EV_LE_DIRECT_ADV_REPORT: + bacpy(&hdev->wake_addr, &direct_adv->bdaddr); + hdev->wake_addr_type = direct_adv->bdaddr_type; + break; + case HCI_EV_LE_EXT_ADV_REPORT: + bacpy(&hdev->wake_addr, &ext_adv->bdaddr); + hdev->wake_addr_type = ext_adv->bdaddr_type; + break; + } + } + } else { + hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; } +unlock: + hci_dev_unlock(hdev); +} + +#define HCI_EV_VL(_op, _func, _min_len, _max_len) \ +[_op] = { \ + .req = false, \ + .func = _func, \ + .min_len = _min_len, \ + .max_len = _max_len, \ +} + +#define HCI_EV(_op, _func, _len) \ + HCI_EV_VL(_op, _func, _len, _len) + +#define HCI_EV_STATUS(_op, _func) \ + HCI_EV(_op, _func, sizeof(struct hci_ev_status)) + +#define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ +[_op] = { \ + .req = true, \ + .func_req = _func, \ + .min_len = _min_len, \ + .max_len = _max_len, \ +} + +#define HCI_EV_REQ(_op, _func, _len) \ + HCI_EV_REQ_VL(_op, _func, _len, _len) + +/* Entries in this table shall have their position according to the event opcode + * they handle so the use of the macros above is recommend since it does attempt + * to initialize at its proper index using Designated Initializers that way + * events without a callback function don't have entered. + */ +static const struct hci_ev { + bool req; + union { + void (*func)(struct hci_dev *hdev, void *data, + struct sk_buff *skb); + void (*func_req)(struct hci_dev *hdev, void *data, + struct sk_buff *skb, u16 *opcode, u8 *status, + hci_req_complete_t *req_complete, + hci_req_complete_skb_t *req_complete_skb); + }; + u16 min_len; + u16 max_len; +} hci_ev_table[U8_MAX + 1] = { + /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ + HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), + /* [0x02 = HCI_EV_INQUIRY_RESULT] */ + HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, + sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), + /* [0x03 = HCI_EV_CONN_COMPLETE] */ + HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, + sizeof(struct hci_ev_conn_complete)), + /* [0x04 = HCI_EV_CONN_REQUEST] */ + HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, + sizeof(struct hci_ev_conn_request)), + /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ + HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, + sizeof(struct hci_ev_disconn_complete)), + /* [0x06 = HCI_EV_AUTH_COMPLETE] */ + HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, + sizeof(struct hci_ev_auth_complete)), + /* [0x07 = HCI_EV_REMOTE_NAME] */ + HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, + sizeof(struct hci_ev_remote_name)), + /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ + HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, + sizeof(struct hci_ev_encrypt_change)), + /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ + HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, + hci_change_link_key_complete_evt, + sizeof(struct hci_ev_change_link_key_complete)), + /* [0x0b = HCI_EV_REMOTE_FEATURES] */ + HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, + sizeof(struct hci_ev_remote_features)), + /* [0x0e = HCI_EV_CMD_COMPLETE] */ + HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, + sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), + /* [0x0f = HCI_EV_CMD_STATUS] */ + HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, + sizeof(struct hci_ev_cmd_status)), + /* [0x10 = HCI_EV_CMD_STATUS] */ + HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, + sizeof(struct hci_ev_hardware_error)), + /* [0x12 = HCI_EV_ROLE_CHANGE] */ + HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, + sizeof(struct hci_ev_role_change)), + /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ + HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, + sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), + /* [0x14 = HCI_EV_MODE_CHANGE] */ + HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, + sizeof(struct hci_ev_mode_change)), + /* [0x16 = HCI_EV_PIN_CODE_REQ] */ + HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, + sizeof(struct hci_ev_pin_code_req)), + /* [0x17 = HCI_EV_LINK_KEY_REQ] */ + HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, + sizeof(struct hci_ev_link_key_req)), + /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ + HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, + sizeof(struct hci_ev_link_key_notify)), + /* [0x1c = HCI_EV_CLOCK_OFFSET] */ + HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, + sizeof(struct hci_ev_clock_offset)), + /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ + HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, + sizeof(struct hci_ev_pkt_type_change)), + /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ + HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, + sizeof(struct hci_ev_pscan_rep_mode)), + /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ + HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, + hci_inquiry_result_with_rssi_evt, + sizeof(struct hci_ev_inquiry_result_rssi), + HCI_MAX_EVENT_SIZE), + /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ + HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, + sizeof(struct hci_ev_remote_ext_features)), + /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ + HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, + sizeof(struct hci_ev_sync_conn_complete)), + /* [0x2f = HCI_EV_EXTENDED_INQUIRY_RESULT] */ + HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, + hci_extended_inquiry_result_evt, + sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), + /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ + HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, + sizeof(struct hci_ev_key_refresh_complete)), + /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ + HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, + sizeof(struct hci_ev_io_capa_request)), + /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ + HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, + sizeof(struct hci_ev_io_capa_reply)), + /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ + HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, + sizeof(struct hci_ev_user_confirm_req)), + /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ + HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, + sizeof(struct hci_ev_user_passkey_req)), + /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ + HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, + sizeof(struct hci_ev_remote_oob_data_request)), + /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ + HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, + sizeof(struct hci_ev_simple_pair_complete)), + /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ + HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, + sizeof(struct hci_ev_user_passkey_notify)), + /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ + HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, + sizeof(struct hci_ev_keypress_notify)), + /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ + HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, + sizeof(struct hci_ev_remote_host_features)), + /* [0x3e = HCI_EV_LE_META] */ + HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, + sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), + /* [0xff = HCI_EV_VENDOR] */ + HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), +}; + +static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, + u16 *opcode, u8 *status, + hci_req_complete_t *req_complete, + hci_req_complete_skb_t *req_complete_skb) +{ + const struct hci_ev *ev = &hci_ev_table[event]; + void *data; + + if (!ev->func) + return; + + if (skb->len < ev->min_len) { + bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", + event, skb->len, ev->min_len); + return; + } + + /* Just warn if the length is over max_len size it still be + * possible to partially parse the event so leave to callback to + * decide if that is acceptable. + */ + if (skb->len > ev->max_len) + bt_dev_warn_ratelimited(hdev, + "unexpected event 0x%2.2x length: %u > %u", + event, skb->len, ev->max_len); + + data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); + if (!data) + return; + + if (ev->req) + ev->func_req(hdev, data, skb, opcode, status, req_complete, + req_complete_skb); + else + ev->func(hdev, data, skb); +} + +void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) +{ + struct hci_event_hdr *hdr = (void *) skb->data; + hci_req_complete_t req_complete = NULL; + hci_req_complete_skb_t req_complete_skb = NULL; + struct sk_buff *orig_skb = NULL; + u8 status = 0, event, req_evt = 0; + u16 opcode = HCI_OP_NOP; + + if (skb->len < sizeof(*hdr)) { + bt_dev_err(hdev, "Malformed HCI Event"); + goto done; + } + + hci_dev_lock(hdev); + kfree_skb(hdev->recv_event); + hdev->recv_event = skb_clone(skb, GFP_KERNEL); + hci_dev_unlock(hdev); + + event = hdr->evt; + if (!event) { + bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", + event); + goto done; + } + + /* Only match event if command OGF is not for LE */ + if (hdev->req_skb && + hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && + hci_skb_event(hdev->req_skb) == event) { + hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), + status, &req_complete, &req_complete_skb); + req_evt = event; + } + + /* If it looks like we might end up having to call + * req_complete_skb, store a pristine copy of the skb since the + * various handlers may modify the original one through + * skb_pull() calls, etc. + */ + if (req_complete_skb || event == HCI_EV_CMD_STATUS || + event == HCI_EV_CMD_COMPLETE) + orig_skb = skb_clone(skb, GFP_KERNEL); + + skb_pull(skb, HCI_EVENT_HDR_SIZE); + + /* Store wake reason if we're suspended */ + hci_store_wake_reason(hdev, event, skb); + + bt_dev_dbg(hdev, "event 0x%2.2x", event); + + hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, + &req_complete_skb); + if (req_complete) { req_complete(hdev, status, opcode); } else if (req_complete_skb) { @@ -5447,6 +7783,7 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) req_complete_skb(hdev, status, opcode, orig_skb); } +done: kfree_skb(orig_skb); kfree_skb(skb); hdev->stat.evt_rx++; |