cregit-Linux how code gets into the kernel

Release 4.8 net/bluetooth/hci_core.c

Directory: net/bluetooth
/*
   BlueZ - Bluetooth protocol stack for Linux
   Copyright (C) 2000-2001 Qualcomm Incorporated
   Copyright (C) 2011 ProFUSION Embedded Systems

   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2 as
   published by the Free Software Foundation;

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
   SOFTWARE IS DISCLAIMED.
*/

/* Bluetooth HCI core. */

#include <linux/export.h>
#include <linux/idr.h>
#include <linux/rfkill.h>
#include <linux/debugfs.h>
#include <linux/crypto.h>
#include <asm/unaligned.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>
#include <net/bluetooth/mgmt.h>

#include "hci_request.h"
#include "hci_debugfs.h"
#include "smp.h"
#include "leds.h"

static void hci_rx_work(struct work_struct *work);
static void hci_cmd_work(struct work_struct *work);
static void hci_tx_work(struct work_struct *work);

/* HCI device list */

LIST_HEAD(hci_dev_list);

DEFINE_RWLOCK(hci_dev_list_lock);

/* HCI callback list */

LIST_HEAD(hci_cb_list);

DEFINE_MUTEX(hci_cb_list_lock);

/* HCI ID Numbering */
static DEFINE_IDA(hci_index_ida);

/* ---- HCI debugfs entries ---- */


static ssize_t dut_mode_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct hci_dev *hdev = file->private_data; char buf[3]; buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N'; buf[1] = '\n'; buf[2] = '\0'; return simple_read_from_buffer(user_buf, count, ppos, buf, 2); }

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marcel holtmannmarcel holtmann82100.00%2100.00%
Total82100.00%2100.00%


static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct hci_dev *hdev = file->private_data; struct sk_buff *skb; char buf[32]; size_t buf_size = min(count, (sizeof(buf)-1)); bool enable; if (!test_bit(HCI_UP, &hdev->flags)) return -ENETDOWN; if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; buf[buf_size] = '\0'; if (strtobool(buf, &enable)) return -EINVAL; if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) return -EALREADY; hci_req_sync_lock(hdev); if (enable) skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, HCI_CMD_TIMEOUT); else skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_CMD_TIMEOUT); hci_req_sync_unlock(hdev); if (IS_ERR(skb)) return PTR_ERR(skb); kfree_skb(skb); hci_dev_change_flag(hdev, HCI_DUT_MODE); return count; }

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marcel holtmannmarcel holtmann20399.02%266.67%
johan hedbergjohan hedberg20.98%133.33%
Total205100.00%3100.00%

static const struct file_operations dut_mode_fops = { .open = simple_open, .read = dut_mode_read, .write = dut_mode_write, .llseek = default_llseek, };
static ssize_t vendor_diag_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct hci_dev *hdev = file->private_data; char buf[3]; buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N'; buf[1] = '\n'; buf[2] = '\0'; return simple_read_from_buffer(user_buf, count, ppos, buf, 2); }

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marcel holtmannmarcel holtmann82100.00%1100.00%
Total82100.00%1100.00%


static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct hci_dev *hdev = file->private_data; char buf[32]; size_t buf_size = min(count, (sizeof(buf)-1)); bool enable; int err; if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; buf[buf_size] = '\0'; if (strtobool(buf, &enable)) return -EINVAL; /* When the diagnostic flags are not persistent and the transport * is not active, then there is no need for the vendor callback. * * Instead just store the desired value. If needed the setting * will be programmed when the controller gets powered on. */ if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && !test_bit(HCI_RUNNING, &hdev->flags)) goto done; hci_req_sync_lock(hdev); err = hdev->set_diag(hdev, enable); hci_req_sync_unlock(hdev); if (err < 0) return err; done: if (enable) hci_dev_set_flag(hdev, HCI_VENDOR_DIAG); else hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG); return count; }

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marcel holtmannmarcel holtmann17798.88%266.67%
johan hedbergjohan hedberg21.12%133.33%
Total179100.00%3100.00%

static const struct file_operations vendor_diag_fops = { .open = simple_open, .read = vendor_diag_read, .write = vendor_diag_write, .llseek = default_llseek, };
static void hci_debugfs_create_basic(struct hci_dev *hdev) { debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, &dut_mode_fops); if (hdev->set_diag) debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev, &vendor_diag_fops); }

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marcel holtmannmarcel holtmann49100.00%1100.00%
Total49100.00%1100.00%


static int hci_reset_req(struct hci_request *req, unsigned long opt) { BT_DBG("%s %ld", req->hdev->name, opt); /* Reset device */ set_bit(HCI_RESET, &req->hdev->flags); hci_req_add(req, HCI_OP_RESET, 0, NULL); return 0; }

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linus torvaldslinus torvalds1832.73%228.57%
maksim krasnyanskiymaksim krasnyanskiy1425.45%114.29%
johan hedbergjohan hedberg1221.82%228.57%
gustavo f. padovangustavo f. padovan1018.18%114.29%
marcel holtmannmarcel holtmann11.82%114.29%
Total55100.00%7100.00%


static void bredr_init(struct hci_request *req) { req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; /* Read Local Supported Features */ hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); /* Read Local Version */ hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); /* Read BD Address */ hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); }

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johan hedbergjohan hedberg2036.36%225.00%
marcel holtmannmarcel holtmann1120.00%225.00%
linus torvaldslinus torvalds916.36%112.50%
maksim krasnyanskiymaksim krasnyanskiy814.55%112.50%
andrei emeltchenkoandrei emeltchenko712.73%225.00%
Total55100.00%8100.00%


static void amp_init1(struct hci_request *req) { req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; /* Read Local Version */ hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); /* Read Local Supported Commands */ hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); /* Read Local AMP Info */ hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); /* Read Data Blk size */ hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); /* Read Flow Control Mode */ hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); /* Read Location Data */ hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); }

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johan hedbergjohan hedberg4448.35%342.86%
marcel holtmannmarcel holtmann3235.16%228.57%
andrei emeltchenkoandrei emeltchenko1516.48%228.57%
Total91100.00%7100.00%


static int amp_init2(struct hci_request *req) { /* Read Local Supported Features. Not all AMP controllers * support this so it's placed conditionally in the second * stage init. */ if (req->hdev->commands[14] & 0x20) hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); return 0; }

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johan hedbergjohan hedberg2974.36%375.00%
marcel holtmannmarcel holtmann1025.64%125.00%
Total39100.00%4100.00%


static int hci_init1_req(struct hci_request *req, unsigned long opt) { struct hci_dev *hdev = req->hdev; BT_DBG("%s %ld", hdev->name, opt); /* Reset */ if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) hci_reset_req(req, 0); switch (hdev->dev_type) { case HCI_PRIMARY: bredr_init(req); break; case HCI_AMP: amp_init1(req); break; default: BT_ERR("Unknown device type %d", hdev->dev_type); break; } return 0; }

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johan hedbergjohan hedberg9598.96%480.00%
marcel holtmannmarcel holtmann11.04%120.00%
Total96100.00%5100.00%


static void bredr_setup(struct hci_request *req) { __le16 param; __u8 flt_type; /* Read Buffer Size (ACL mtu, max pkt, etc.) */ hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); /* Read Class of Device */ hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); /* Read Local Name */ hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); /* Read Voice Setting */ hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); /* Read Number of Supported IAC */ hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); /* Read Current IAC LAP */ hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); /* Clear Event Filters */ flt_type = HCI_FLT_CLEAR_ALL; hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); /* Connection accept timeout ~20 secs */ param = cpu_to_le16(0x7d00); hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, &param); }

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johan hedbergjohan hedberg10180.16%240.00%
marcel holtmannmarcel holtmann2419.05%240.00%
joe perchesjoe perches10.79%120.00%
Total126100.00%5100.00%


static void le_setup(struct hci_request *req) { struct hci_dev *hdev = req->hdev; /* Read LE Buffer Size */ hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); /* Read LE Local Supported Features */ hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); /* Read LE Supported States */ hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); /* LE-only controllers have LE implicitly enabled */ if (!lmp_bredr_capable(hdev)) hci_dev_set_flag(hdev, HCI_LE_ENABLED); }

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johan hedbergjohan hedberg5779.17%360.00%
marcel holtmannmarcel holtmann1520.83%240.00%
Total72100.00%5100.00%


static void hci_setup_event_mask(struct hci_request *req) { struct hci_dev *hdev = req->hdev; /* The second byte is 0xff instead of 0x9f (two reserved bits * disabled) since a Broadcom 1.2 dongle doesn't respond to the * command otherwise. */ u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; /* CSR 1.1 dongles does not accept any bitfield so don't try to set * any event mask for pre 1.2 devices. */ if (hdev->hci_ver < BLUETOOTH_VER_1_2) return; if (lmp_bredr_capable(hdev)) { events[4] |= 0x01; /* Flow Specification Complete */ } else { /* Use a different default for LE-only devices */ memset(events, 0, sizeof(events)); events[1] |= 0x20; /* Command Complete */ events[1] |= 0x40; /* Command Status */ events[1] |= 0x80; /* Hardware Error */ /* If the controller supports the Disconnect command, enable * the corresponding event. In addition enable packet flow * control related events. */ if (hdev->commands[0] & 0x20) { events[0] |= 0x10; /* Disconnection Complete */ events[2] |= 0x04; /* Number of Completed Packets */ events[3] |= 0x02; /* Data Buffer Overflow */ } /* If the controller supports the Read Remote Version * Information command, enable the corresponding event. */ if (hdev->commands[2] & 0x80) events[1] |= 0x08; /* Read Remote Version Information * Complete */ if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { events[0] |= 0x80; /* Encryption Change */ events[5] |= 0x80; /* Encryption Key Refresh Complete */ } } if (lmp_inq_rssi_capable(hdev) || test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) events[4] |= 0x02; /* Inquiry Result with RSSI */ if (lmp_ext_feat_capable(hdev)) events[4] |= 0x04; /* Read Remote Extended Features Complete */ if (lmp_esco_capable(hdev)) { events[5] |= 0x08; /* Synchronous Connection Complete */ events[5] |= 0x10; /* Synchronous Connection Changed */ } if (lmp_sniffsubr_capable(hdev)) events[5] |= 0x20; /* Sniff Subrating */ if (lmp_pause_enc_capable(hdev)) events[5] |= 0x80; /* Encryption Key Refresh Complete */ if (lmp_ext_inq_capable(hdev)) events[5] |= 0x40; /* Extended Inquiry Result */ if (lmp_no_flush_capable(hdev)) events[7] |= 0x01; /* Enhanced Flush Complete */ if (lmp_lsto_capable(hdev)) events[6] |= 0x80; /* Link Supervision Timeout Changed */ if (lmp_ssp_capable(hdev)) { events[6] |= 0x01; /* IO Capability Request */ events[6] |= 0x02; /* IO Capability Response */ events[6] |= 0x04; /* User Confirmation Request */ events[6] |= 0x08; /* User Passkey Request */ events[6] |= 0x10; /* Remote OOB Data Request */ events[6] |= 0x20; /* Simple Pairing Complete */ events[7] |= 0x04; /* User Passkey Notification */ events[7] |= 0x08; /* Keypress Notification */ events[7] |= 0x10; /* Remote Host Supported * Features Notification */ } if (lmp_le_capable(hdev)) events[7] |= 0x20; /* LE Meta-Event */ hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); }

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johan hedbergjohan hedberg27260.58%228.57%
marcel holtmannmarcel holtmann17739.42%571.43%
Total449100.00%7100.00%


static int hci_init2_req(struct hci_request *req, unsigned long opt) { struct hci_dev *hdev = req->hdev; if (hdev->dev_type == HCI_AMP) return amp_init2(req); if (lmp_bredr_capable(hdev)) bredr_setup(req); else hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); if (lmp_le_capable(hdev)) le_setup(req); /* All Bluetooth 1.2 and later controllers should support the * HCI command for reading the local supported commands. * * Unfortunately some controllers indicate Bluetooth 1.2 support, * but do not have support for this command. If that is the case, * the driver can quirk the behavior and skip reading the local * supported commands. */ if (hdev->hci_ver > BLUETOOTH_VER_1_1 && !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); if (lmp_ssp_capable(hdev)) { /* When SSP is available, then the host features page * should also be available as well. However some * controllers list the max_page as 0 as long as SSP * has not been enabled. To achieve proper debugging * output, force the minimum max_page to 1 at least. */ hdev->max_page = 0x01; if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { u8 mode = 0x01; hci_req_add(req, HCI_OP_WRITE_SSP_MODE, sizeof(mode), &mode); } else { struct hci_cp_write_eir cp; memset(hdev->eir, 0, sizeof(hdev->eir)); memset(&cp, 0, sizeof(cp)); hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); } } if (lmp_inq_rssi_capable(hdev) || test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { u8 mode; /* If Extended Inquiry Result events are supported, then * they are clearly preferred over Inquiry Result with RSSI * events. */ mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); } if (lmp_inq_tx_pwr_capable(hdev)) hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); if (lmp_ext_feat_capable(hdev)) { struct hci_cp_read_local_ext_features cp; cp.page = 0x01; hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, sizeof(cp), &cp); } if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { u8 enable = 1; hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), &enable); } return 0; }

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johan hedbergjohan hedberg26880.97%545.45%
marcel holtmannmarcel holtmann6319.03%654.55%
Total331100.00%11100.00%


static void hci_setup_link_policy(struct hci_request *req) { struct hci_dev *hdev = req->hdev; struct hci_cp_write_def_link_policy cp; u16 link_policy = 0; if (lmp_rswitch_capable(hdev)) link_policy |= HCI_LP_RSWITCH; if (lmp_hold_capable(hdev)) link_policy |= HCI_LP_HOLD; if (lmp_sniff_capable(hdev)) link_policy |= HCI_LP_SNIFF; if (lmp_park_capable(hdev)) link_policy |= HCI_LP_PARK; cp.policy = cpu_to_le16(link_policy); hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); }

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johan hedbergjohan hedberg8486.60%240.00%
andrei emeltchenkoandrei emeltchenko1313.40%360.00%
Total97100.00%5100.00%


static void hci_set_le_support(struct hci_request *req) { struct hci_dev *hdev = req->hdev; struct hci_cp_write_le_host_supported cp; /* LE-only devices do not support explicit enablement */ if (!lmp_bredr_capable(hdev)) return; memset(&cp, 0, sizeof(cp)); if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { cp.le = 0x01; cp.simul = 0x00; } if (cp.le != lmp_host_le_capable(hdev)) hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), &cp); }

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johan hedbergjohan hedberg5961.46%350.00%
andrei emeltchenkoandrei emeltchenko3334.38%116.67%
marcel holtmannmarcel holtmann44.17%233.33%
Total96100.00%6100.00%


static void hci_set_event_mask_page_2(struct hci_request *req) { struct hci_dev *hdev = req->hdev; u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; /* If Connectionless Slave Broadcast master role is supported * enable all necessary events for it. */ if (lmp_csb_master_capable(hdev)) { events[1] |= 0x40; /* Triggered Clock Capture */ events[1] |= 0x80; /* Synchronization Train Complete */ events[2] |= 0x10; /* Slave Page Response Timeout */ events[2] |= 0x20; /* CSB Channel Map Change */ } /* If Connectionless Slave Broadcast slave role is supported * enable all necessary events for it. */ if (lmp_csb_slave_capable(hdev)) { events[2] |= 0x01; /* Synchronization Train Received */ events[2] |= 0x02; /* CSB Receive */ events[2] |= 0x04; /* CSB Timeout */ events[2] |= 0x08; /* Truncated Page Complete */ } /* Enable Authenticated Payload Timeout Expired event if supported */ if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) events[2] |= 0x80; hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); }

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johan hedbergjohan hedberg13681.93%125.00%
marcel holtmannmarcel holtmann3018.07%375.00%
Total166100.00%4100.00%


static int hci_init3_req(struct hci_request *req, unsigned long opt) { struct hci_dev *hdev = req->hdev; u8 p; hci_setup_event_mask(req); if (hdev->commands[6] & 0x20 && !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { struct hci_cp_read_stored_link_key cp; bacpy(&cp.bdaddr, BDADDR_ANY); cp.read_all = 0x01; hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); } if (hdev->commands[5] & 0x10) hci_setup_link_policy(req); if (hdev->commands[8] & 0x01) hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); /* Some older Broadcom based Bluetooth 1.2 controllers do not * support the Read Page Scan Type command. Check support for * this command in the bit mask of supported commands. */ if (hdev->commands[13] & 0x01) hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); if (lmp_le_capable(hdev)) { u8 events[8]; memset(events, 0, sizeof(events)); if (hdev->le_features[0] & HCI_LE_ENCRYPTION) events[0] |= 0x10; /* LE Long Term Key Request */ /* If controller supports the Connection Parameters Request * Link Layer Procedure, enable the corresponding event. */ if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) events[0] |= 0x20; /* LE Remote Connection * Parameter Request */ /* If the controller supports the Data Length Extension * feature, enable the corresponding event. */ if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) events[0] |= 0x40; /* LE Data Length Change */ /* If the controller supports Extended Scanner Filter * Policies, enable the correspondig event. */ if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) events[1] |= 0x04; /* LE Direct Advertising * Report */ /* If the controller supports the LE Set Scan Enable command, * enable the corresponding advertising report event. */ if (hdev->commands[26] & 0x08) events[0] |= 0x02; /* LE Advertising Report */ /* If the controller supports the LE Create Connection * command, enable the corresponding event. */ if (hdev->commands[26] & 0x10) events[0] |= 0x01; /* LE Connection Complete */ /* If the controller supports the LE Connection Update * command, enable the corresponding event. */ if (hdev->commands[27] & 0x04) events[0] |= 0x04; /* LE Connection Update * Complete */ /* If the controller supports the LE Read Remote Used Features * command, enable the corresponding event. */ if (hdev->commands[27] & 0x20) events[0] |= 0x08; /* LE Read Remote Used * Features Complete */ /* If the controller supports the LE Read Local P-256 * Public Key command, enable the corresponding event. */ if (hdev->commands[34] & 0x02) events[0] |= 0x80; /* LE Read Local P-256 * Public Key Complete */ /* If the controller supports the LE Generate DHKey * command, enable the corresponding event. */ if (hdev->commands[34] & 0x04) events[1] |= 0x01; /* LE Generate DHKey Complete */ hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), events); if (hdev->commands[25] & 0x40) { /* Read LE Advertising Channel TX Power */ hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); } if (hdev->commands