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Bluetooth: Add HCI status return parameter to hci_req_sync() 

In some cases it may be important to get the exact HCI status rather
than the converted HCI-to-errno value. Add an optional return
parameter to the hci_req_sync() API to allow for this. Since there are
no good HCI translation candidates for cancelation and timeout, use
the "unknown" status code for those cases.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2015-11-11 08:11:19 +02:00 committed by Marcel Holtmann
parent 51d7a94d56
commit 4ebeee2dff
4 changed files with 26 additions and 19 deletions
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3
include/net/bluetooth/hci.h
View File

@ -452,7 +452,8 @@ enum {
#define HCI_ERROR_REMOTE_POWER_OFF 0x15
#define HCI_ERROR_LOCAL_HOST_TERM 0x16
#define HCI_ERROR_PAIRING_NOT_ALLOWED 0x18
#define HCI_ERROR_INVALID_LL_PARAMS 0x1E
#define HCI_ERROR_INVALID_LL_PARAMS 0x1e
#define HCI_ERROR_UNSPECIFIED 0x1f
#define HCI_ERROR_ADVERTISING_TIMEOUT 0x3c
/* Flow control modes */

26
net/bluetooth/hci_core.c
View File

@ -768,14 +768,14 @@ static int __hci_init(struct hci_dev *hdev)
{
int err;
err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT);
err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT, NULL);
if (err < 0)
return err;
if (hci_dev_test_flag(hdev, HCI_SETUP))
hci_debugfs_create_basic(hdev);
err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT);
err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT, NULL);
if (err < 0)
return err;
@ -786,11 +786,11 @@ static int __hci_init(struct hci_dev *hdev)
if (hdev->dev_type != HCI_BREDR)
return 0;
err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT);
err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT, NULL);
if (err < 0)
return err;
err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT);
err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT, NULL);
if (err < 0)
return err;
@ -846,7 +846,7 @@ static int __hci_unconf_init(struct hci_dev *hdev)
if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
return 0;
err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT);
err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT, NULL);
if (err < 0)
return err;
@ -1204,7 +1204,7 @@ int hci_inquiry(void __user *arg)
if (do_inquiry) {
err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir,
timeo);
timeo, NULL);
if (err < 0)
goto done;
@ -1570,7 +1570,7 @@ int hci_dev_do_close(struct hci_dev *hdev)
if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) &&
!auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
set_bit(HCI_INIT, &hdev->flags);
__hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT);
__hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT, NULL);
clear_bit(HCI_INIT, &hdev->flags);
}
@ -1667,7 +1667,7 @@ static int hci_dev_do_reset(struct hci_dev *hdev)
atomic_set(&hdev->cmd_cnt, 1);
hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0;
ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT);
ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT, NULL);
hci_req_sync_unlock(hdev);
return ret;
@ -1802,7 +1802,7 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg)
switch (cmd) {
case HCISETAUTH:
err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt,
HCI_INIT_TIMEOUT);
HCI_INIT_TIMEOUT, NULL);
break;
case HCISETENCRYPT:
@ -1814,18 +1814,18 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg)
if (!test_bit(HCI_AUTH, &hdev->flags)) {
/* Auth must be enabled first */
err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt,
HCI_INIT_TIMEOUT);
HCI_INIT_TIMEOUT, NULL);
if (err)
break;
}
err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt,
HCI_INIT_TIMEOUT);
HCI_INIT_TIMEOUT, NULL);
break;
case HCISETSCAN:
err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt,
HCI_INIT_TIMEOUT);
HCI_INIT_TIMEOUT, NULL);
/* Ensure that the connectable and discoverable states
* get correctly modified as this was a non-mgmt change.
@ -1836,7 +1836,7 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg)
case HCISETLINKPOL:
err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt,
HCI_INIT_TIMEOUT);
HCI_INIT_TIMEOUT, NULL);
break;
case HCISETLINKMODE:

12
net/bluetooth/hci_request.c
View File

@ -186,7 +186,7 @@ EXPORT_SYMBOL(__hci_cmd_sync);
/* Execute request and wait for completion. */
int __hci_req_sync(struct hci_dev *hdev, void (*func)(struct hci_request *req,
unsigned long opt),
unsigned long opt, __u32 timeout)
unsigned long opt, u32 timeout, u8 *hci_status)
{
struct hci_request req;
DECLARE_WAITQUEUE(wait, current);
@ -231,14 +231,20 @@ int __hci_req_sync(struct hci_dev *hdev, void (*func)(struct hci_request *req,
switch (hdev->req_status) {
case HCI_REQ_DONE:
err = -bt_to_errno(hdev->req_result);
if (hci_status)
*hci_status = hdev->req_result;
break;
case HCI_REQ_CANCELED:
err = -hdev->req_result;
if (hci_status)
*hci_status = HCI_ERROR_UNSPECIFIED;
break;
default:
err = -ETIMEDOUT;
if (hci_status)
*hci_status = HCI_ERROR_UNSPECIFIED;
break;
}
@ -251,7 +257,7 @@ int __hci_req_sync(struct hci_dev *hdev, void (*func)(struct hci_request *req,
int hci_req_sync(struct hci_dev *hdev, void (*req)(struct hci_request *req,
unsigned long opt),
unsigned long opt, __u32 timeout)
unsigned long opt, u32 timeout, u8 *hci_status)
{
int ret;
@ -260,7 +266,7 @@ int hci_req_sync(struct hci_dev *hdev, void (*req)(struct hci_request *req,
/* Serialize all requests */
hci_req_sync_lock(hdev);
ret = __hci_req_sync(hdev, req, opt, timeout);
ret = __hci_req_sync(hdev, req, opt, timeout, hci_status);
hci_req_sync_unlock(hdev);
return ret;

4
net/bluetooth/hci_request.h
View File

@ -46,10 +46,10 @@ void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status,
int hci_req_sync(struct hci_dev *hdev, void (*req)(struct hci_request *req,
unsigned long opt),
unsigned long opt, __u32 timeout);
unsigned long opt, u32 timeout, u8 *hci_status);
int __hci_req_sync(struct hci_dev *hdev, void (*func)(struct hci_request *req,
unsigned long opt),
unsigned long opt, __u32 timeout);
unsigned long opt, u32 timeout, u8 *hci_status);
void hci_req_sync_cancel(struct hci_dev *hdev, int err);
struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, u32 plen,