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Bluetooth: Fix UUID/class mgmt command response synchronization 

We should only return a mgmt command complete once all HCI commands to a
mgmt_set_dev_class or mgmt_add/remove_uuid command have completed. This
patch fixes the issue by having a proper async request complete callback
for these actions and responding to user space in the callback.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Johan Hedberg 2013-03-15 17:06:55 -05:00 committed by Gustavo Padovan
parent 0cab9c80ff
commit 92da609750
1 changed files with 56 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
net/bluetooth/mgmt.c
View File

@ -1378,6 +1378,32 @@ static u8 get_uuid_size(const u8 *uuid)
return 16;
}
static void mgmt_class_complete(struct hci_dev *hdev, u16 mgmt_op, u8 status)
{
struct pending_cmd *cmd;
hci_dev_lock(hdev);
cmd = mgmt_pending_find(mgmt_op, hdev);
if (!cmd)
goto unlock;
cmd_complete(cmd->sk, cmd->index, cmd->opcode, mgmt_status(status),
hdev->dev_class, 3);
mgmt_pending_remove(cmd);
unlock:
hci_dev_unlock(hdev);
}
static void add_uuid_complete(struct hci_dev *hdev, u8 status)
{
BT_DBG("status 0x%02x", status);
mgmt_class_complete(hdev, MGMT_OP_ADD_UUID, status);
}
static int add_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
{
struct mgmt_cp_add_uuid *cp = data;
@ -1413,9 +1439,11 @@ static int add_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
update_class(&req);
update_eir(&req);
hci_req_run(&req, NULL);
err = hci_req_run(&req, add_uuid_complete);
if (err < 0) {
if (err != -ENODATA)
goto failed;
if (!test_bit(HCI_PENDING_CLASS, &hdev->dev_flags)) {
err = cmd_complete(sk, hdev->id, MGMT_OP_ADD_UUID, 0,
hdev->dev_class, 3);
goto failed;
@ -1448,6 +1476,13 @@ static bool enable_service_cache(struct hci_dev *hdev)
return false;
}
static void remove_uuid_complete(struct hci_dev *hdev, u8 status)
{
BT_DBG("status 0x%02x", status);
mgmt_class_complete(hdev, MGMT_OP_REMOVE_UUID, status);
}
static int remove_uuid(struct sock *sk, struct hci_dev *hdev, void *data,
u16 len)
{
@ -1503,9 +1538,11 @@ update_class:
update_class(&req);
update_eir(&req);
hci_req_run(&req, NULL);
err = hci_req_run(&req, remove_uuid_complete);
if (err < 0) {
if (err != -ENODATA)
goto unlock;
if (!test_bit(HCI_PENDING_CLASS, &hdev->dev_flags)) {
err = cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_UUID, 0,
hdev->dev_class, 3);
goto unlock;
@ -1524,6 +1561,13 @@ unlock:
return err;
}
static void set_class_complete(struct hci_dev *hdev, u8 status)
{
BT_DBG("status 0x%02x", status);
mgmt_class_complete(hdev, MGMT_OP_SET_DEV_CLASS, status);
}
static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data,
u16 len)
{
@ -1572,9 +1616,11 @@ static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data,
update_class(&req);
hci_req_run(&req, NULL);
err = hci_req_run(&req, set_class_complete);
if (err < 0) {
if (err != -ENODATA)
goto unlock;
if (!test_bit(HCI_PENDING_CLASS, &hdev->dev_flags)) {
err = cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0,
hdev->dev_class, 3);
goto unlock;
@ -3700,21 +3746,14 @@ int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status)
return err;
}
static void class_rsp(struct pending_cmd *cmd, void *data)
static void sk_lookup(struct pending_cmd *cmd, void *data)
{
struct cmd_lookup *match = data;
cmd_complete(cmd->sk, cmd->index, cmd->opcode, match->mgmt_status,
match->hdev->dev_class, 3);
list_del(&cmd->list);
if (match->sk == NULL) {
match->sk = cmd->sk;
sock_hold(match->sk);
}
mgmt_pending_free(cmd);
}
int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
@ -3725,9 +3764,9 @@ int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
clear_bit(HCI_PENDING_CLASS, &hdev->dev_flags);
mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, class_rsp, &match);
mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, class_rsp, &match);
mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, class_rsp, &match);
mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, sk_lookup, &match);
mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, sk_lookup, &match);
mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, sk_lookup, &match);
if (!status)
err = mgmt_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, dev_class,