From d603b76b0c18c5adf4a3164dff50bb15948cd7bd Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Sun, 6 Jul 2014 12:11:14 +0200 Subject: [PATCH] Bluetooth: Run controller setup after external configuration When the external configuration triggers the switch to a configured controller, it means the setup needs to be run. Controllers that start out unconfigured have only run limited set of HCI commands. This is not enough for complete operation and thus run the setup procedure before announcing the new controller index. This introduces HCI_CONFIG flag as companion to HCI_SETUP flag. The HCI_SETUP flag is only used once for the initial setup procedure. And during that procedure hdev->setup driver callback is called. With the new HCI_CONFIG the switch from unconfigured to configured state is triggering the same setup procedure just without hdev->setup. This is required since bringing a controller back to unconfigured state from configured state is possible. Signed-off-by: Marcel Holtmann Signed-off-by: Johan Hedberg --- include/net/bluetooth/hci.h | 1 + net/bluetooth/hci_core.c | 17 ++++++++++++++--- net/bluetooth/hci_sock.c | 3 ++- net/bluetooth/mgmt.c | 14 ++++++++++++-- 4 files changed, 29 insertions(+), 6 deletions(-) diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index 80c5fc9..46f2458 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -163,6 +163,7 @@ enum { */ enum { HCI_SETUP, + HCI_CONFIG, HCI_AUTO_OFF, HCI_RFKILLED, HCI_MGMT, diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index d01bd04..bf7cf51 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -2232,7 +2232,8 @@ static int hci_dev_do_open(struct hci_dev *hdev) goto done; } - if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { + if (!test_bit(HCI_SETUP, &hdev->dev_flags) && + !test_bit(HCI_CONFIG, &hdev->dev_flags)) { /* Check for rfkill but allow the HCI setup stage to * proceed (which in itself doesn't cause any RF activity). */ @@ -2326,6 +2327,7 @@ static int hci_dev_do_open(struct hci_dev *hdev) set_bit(HCI_UP, &hdev->flags); hci_notify(hdev, HCI_DEV_UP); if (!test_bit(HCI_SETUP, &hdev->dev_flags) && + !test_bit(HCI_CONFIG, &hdev->dev_flags) && !test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && hdev->dev_type == HCI_BREDR) { @@ -2824,7 +2826,8 @@ static int hci_rfkill_set_block(void *data, bool blocked) if (blocked) { set_bit(HCI_RFKILLED, &hdev->dev_flags); - if (!test_bit(HCI_SETUP, &hdev->dev_flags)) + if (!test_bit(HCI_SETUP, &hdev->dev_flags) && + !test_bit(HCI_CONFIG, &hdev->dev_flags)) hci_dev_do_close(hdev); } else { clear_bit(HCI_RFKILLED, &hdev->dev_flags); @@ -2881,6 +2884,12 @@ static void hci_power_on(struct work_struct *work) * and no event will be send. */ mgmt_index_added(hdev); + } else if (test_and_clear_bit(HCI_CONFIG, &hdev->dev_flags)) { + /* Powering on the controller with HCI_CONFIG set only + * happens with the transition from unconfigured to + * configured. This will send the Index Added event. + */ + mgmt_index_added(hdev); } } @@ -4045,7 +4054,8 @@ void hci_unregister_dev(struct hci_dev *hdev) cancel_work_sync(&hdev->power_on); if (!test_bit(HCI_INIT, &hdev->flags) && - !test_bit(HCI_SETUP, &hdev->dev_flags)) { + !test_bit(HCI_SETUP, &hdev->dev_flags) && + !test_bit(HCI_CONFIG, &hdev->dev_flags)) { hci_dev_lock(hdev); mgmt_index_removed(hdev); hci_dev_unlock(hdev); @@ -5370,6 +5380,7 @@ void hci_update_background_scan(struct hci_dev *hdev) if (!test_bit(HCI_UP, &hdev->flags) || test_bit(HCI_INIT, &hdev->flags) || test_bit(HCI_SETUP, &hdev->dev_flags) || + test_bit(HCI_CONFIG, &hdev->dev_flags) || test_bit(HCI_AUTO_OFF, &hdev->dev_flags) || test_bit(HCI_UNREGISTER, &hdev->dev_flags)) return; diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index ba13ad8..8026657 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -693,7 +693,8 @@ static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, if (test_bit(HCI_UP, &hdev->flags) || test_bit(HCI_INIT, &hdev->flags) || - test_bit(HCI_SETUP, &hdev->dev_flags)) { + test_bit(HCI_SETUP, &hdev->dev_flags) || + test_bit(HCI_CONFIG, &hdev->dev_flags)) { err = -EBUSY; hci_dev_put(hdev); goto done; diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 04a6642..d66463a 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -385,6 +385,7 @@ static int read_index_list(struct sock *sk, struct hci_dev *hdev, void *data, count = 0; list_for_each_entry(d, &hci_dev_list, list) { if (test_bit(HCI_SETUP, &d->dev_flags) || + test_bit(HCI_CONFIG, &d->dev_flags) || test_bit(HCI_USER_CHANNEL, &d->dev_flags)) continue; @@ -444,6 +445,7 @@ static int read_unconf_index_list(struct sock *sk, struct hci_dev *hdev, count = 0; list_for_each_entry(d, &hci_dev_list, list) { if (test_bit(HCI_SETUP, &d->dev_flags) || + test_bit(HCI_CONFIG, &d->dev_flags) || test_bit(HCI_USER_CHANNEL, &d->dev_flags)) continue; @@ -5441,8 +5443,15 @@ static int set_external_config(struct sock *sk, struct hci_dev *hdev, if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) == is_configured(hdev)) { mgmt_index_removed(hdev); - change_bit(HCI_UNCONFIGURED, &hdev->dev_flags); - mgmt_index_added(hdev); + + if (test_and_change_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { + set_bit(HCI_CONFIG, &hdev->dev_flags); + set_bit(HCI_AUTO_OFF, &hdev->dev_flags); + + queue_work(hdev->req_workqueue, &hdev->power_on); + } else { + mgmt_index_added(hdev); + } } unlock: @@ -5558,6 +5567,7 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen) } if (test_bit(HCI_SETUP, &hdev->dev_flags) || + test_bit(HCI_CONFIG, &hdev->dev_flags) || test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { err = cmd_status(sk, index, opcode, MGMT_STATUS_INVALID_INDEX); -- 2.7.4