diff options
| -rw-r--r-- | include/net/bluetooth/hci.h | 3 | ||||
| -rw-r--r-- | net/bluetooth/hci_core.c | 73 |
2 files changed, 76 insertions, 0 deletions
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index ac9c4a75e314..1784c48699f0 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -115,6 +115,7 @@ enum { HCI_PAIRABLE, HCI_SERVICE_CACHE, HCI_DEBUG_KEYS, + HCI_DUT_MODE, HCI_UNREGISTER, HCI_USER_CHANNEL, @@ -1043,6 +1044,8 @@ struct hci_rp_write_remote_amp_assoc { __u8 phy_handle; } __packed; +#define HCI_OP_ENABLE_DUT_MODE 0x1803 + #define HCI_OP_WRITE_SSP_DEBUG_MODE 0x1804 #define HCI_OP_LE_SET_EVENT_MASK 0x2001 diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 8149e1303e2b..b5c8cb3c96d2 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -58,6 +58,71 @@ static void hci_notify(struct hci_dev *hdev, int event) /* ---- 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] = test_bit(HCI_DUT_MODE, &hdev->dev_flags) ? 'Y': 'N'; + buf[1] = '\n'; + buf[2] = '\0'; + return simple_read_from_buffer(user_buf, count, ppos, buf, 2); +} + +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; + int err; + + 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 == test_bit(HCI_DUT_MODE, &hdev->dev_flags)) + return -EALREADY; + + hci_req_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_unlock(hdev); + + if (IS_ERR(skb)) + return PTR_ERR(skb); + + err = -bt_to_errno(skb->data[0]); + kfree_skb(skb); + + if (err < 0) + return err; + + change_bit(HCI_DUT_MODE, &hdev->dev_flags); + + return count; +} + +static const struct file_operations dut_mode_fops = { + .open = simple_open, + .read = dut_mode_read, + .write = dut_mode_write, + .llseek = default_llseek, +}; + static int features_show(struct seq_file *f, void *ptr) { struct hci_dev *hdev = f->private; @@ -1256,6 +1321,14 @@ static int __hci_init(struct hci_dev *hdev) if (err < 0) return err; + /* The Device Under Test (DUT) mode is special and available for + * all controller types. So just create it early on. + */ + if (test_bit(HCI_SETUP, &hdev->dev_flags)) { + debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, + &dut_mode_fops); + } + /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode * BR/EDR/LE type controllers. AMP controllers only need the * first stage init. |