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Diffstat (limited to 'net/bluetooth/mgmt.c')
-rw-r--r--net/bluetooth/mgmt.c229
1 files changed, 155 insertions, 74 deletions
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index f8ecbc70293..fedc5399d46 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -102,18 +102,6 @@ static const u16 mgmt_events[] = {
MGMT_EV_PASSKEY_NOTIFY,
};
-/*
- * These LE scan and inquiry parameters were chosen according to LE General
- * Discovery Procedure specification.
- */
-#define LE_SCAN_WIN 0x12
-#define LE_SCAN_INT 0x12
-#define LE_SCAN_TIMEOUT_LE_ONLY msecs_to_jiffies(10240)
-#define LE_SCAN_TIMEOUT_BREDR_LE msecs_to_jiffies(5120)
-
-#define INQUIRY_LEN_BREDR 0x08 /* TGAP(100) */
-#define INQUIRY_LEN_BREDR_LE 0x04 /* TGAP(100)/2 */
-
#define CACHE_TIMEOUT msecs_to_jiffies(2 * 1000)
#define hdev_is_powered(hdev) (test_bit(HCI_UP, &hdev->flags) && \
@@ -1748,8 +1736,6 @@ static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
hci_link_keys_clear(hdev);
- set_bit(HCI_LINK_KEYS, &hdev->dev_flags);
-
if (cp->debug_keys)
set_bit(HCI_DEBUG_KEYS, &hdev->dev_flags);
else
@@ -2633,28 +2619,72 @@ static int remove_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
return err;
}
-int mgmt_interleaved_discovery(struct hci_dev *hdev)
+static int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status)
{
+ struct pending_cmd *cmd;
+ u8 type;
int err;
- BT_DBG("%s", hdev->name);
+ hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
- hci_dev_lock(hdev);
+ cmd = mgmt_pending_find(MGMT_OP_START_DISCOVERY, hdev);
+ if (!cmd)
+ return -ENOENT;
- err = hci_do_inquiry(hdev, INQUIRY_LEN_BREDR_LE);
- if (err < 0)
- hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+ type = hdev->discovery.type;
- hci_dev_unlock(hdev);
+ err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
+ &type, sizeof(type));
+ mgmt_pending_remove(cmd);
return err;
}
+static void start_discovery_complete(struct hci_dev *hdev, u8 status)
+{
+ BT_DBG("status %d", status);
+
+ if (status) {
+ hci_dev_lock(hdev);
+ mgmt_start_discovery_failed(hdev, status);
+ hci_dev_unlock(hdev);
+ return;
+ }
+
+ hci_dev_lock(hdev);
+ hci_discovery_set_state(hdev, DISCOVERY_FINDING);
+ hci_dev_unlock(hdev);
+
+ switch (hdev->discovery.type) {
+ case DISCOV_TYPE_LE:
+ queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable,
+ DISCOV_LE_TIMEOUT);
+ break;
+
+ case DISCOV_TYPE_INTERLEAVED:
+ queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable,
+ DISCOV_INTERLEAVED_TIMEOUT);
+ break;
+
+ case DISCOV_TYPE_BREDR:
+ break;
+
+ default:
+ BT_ERR("Invalid discovery type %d", hdev->discovery.type);
+ }
+}
+
static int start_discovery(struct sock *sk, struct hci_dev *hdev,
void *data, u16 len)
{
struct mgmt_cp_start_discovery *cp = data;
struct pending_cmd *cmd;
+ struct hci_cp_le_set_scan_param param_cp;
+ struct hci_cp_le_set_scan_enable enable_cp;
+ struct hci_cp_inquiry inq_cp;
+ struct hci_request req;
+ /* General inquiry access code (GIAC) */
+ u8 lap[3] = { 0x33, 0x8b, 0x9e };
int err;
BT_DBG("%s", hdev->name);
@@ -2687,6 +2717,8 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
hdev->discovery.type = cp->type;
+ hci_req_init(&req, hdev);
+
switch (hdev->discovery.type) {
case DISCOV_TYPE_BREDR:
if (!lmp_bredr_capable(hdev)) {
@@ -2696,10 +2728,23 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
goto failed;
}
- err = hci_do_inquiry(hdev, INQUIRY_LEN_BREDR);
+ if (test_bit(HCI_INQUIRY, &hdev->flags)) {
+ err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
+ MGMT_STATUS_BUSY);
+ mgmt_pending_remove(cmd);
+ goto failed;
+ }
+
+ hci_inquiry_cache_flush(hdev);
+
+ memset(&inq_cp, 0, sizeof(inq_cp));
+ memcpy(&inq_cp.lap, lap, sizeof(inq_cp.lap));
+ inq_cp.length = DISCOV_BREDR_INQUIRY_LEN;
+ hci_req_add(&req, HCI_OP_INQUIRY, sizeof(inq_cp), &inq_cp);
break;
case DISCOV_TYPE_LE:
+ case DISCOV_TYPE_INTERLEAVED:
if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) {
err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
MGMT_STATUS_NOT_SUPPORTED);
@@ -2707,20 +2752,40 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
goto failed;
}
- err = hci_le_scan(hdev, LE_SCAN_ACTIVE, LE_SCAN_INT,
- LE_SCAN_WIN, LE_SCAN_TIMEOUT_LE_ONLY);
- break;
-
- case DISCOV_TYPE_INTERLEAVED:
- if (!lmp_host_le_capable(hdev) || !lmp_bredr_capable(hdev)) {
+ if (hdev->discovery.type == DISCOV_TYPE_INTERLEAVED &&
+ !lmp_bredr_capable(hdev)) {
err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
MGMT_STATUS_NOT_SUPPORTED);
mgmt_pending_remove(cmd);
goto failed;
}
- err = hci_le_scan(hdev, LE_SCAN_ACTIVE, LE_SCAN_INT,
- LE_SCAN_WIN, LE_SCAN_TIMEOUT_BREDR_LE);
+ if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags)) {
+ err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
+ MGMT_STATUS_REJECTED);
+ mgmt_pending_remove(cmd);
+ goto failed;
+ }
+
+ if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) {
+ err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
+ MGMT_STATUS_BUSY);
+ mgmt_pending_remove(cmd);
+ goto failed;
+ }
+
+ memset(&param_cp, 0, sizeof(param_cp));
+ param_cp.type = LE_SCAN_ACTIVE;
+ param_cp.interval = cpu_to_le16(DISCOV_LE_SCAN_INT);
+ param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN);
+ hci_req_add(&req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
+ &param_cp);
+
+ memset(&enable_cp, 0, sizeof(enable_cp));
+ enable_cp.enable = LE_SCAN_ENABLE;
+ enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
+ hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
+ &enable_cp);
break;
default:
@@ -2730,6 +2795,7 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
goto failed;
}
+ err = hci_req_run(&req, start_discovery_complete);
if (err < 0)
mgmt_pending_remove(cmd);
else
@@ -2740,6 +2806,39 @@ failed:
return err;
}
+static int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status)
+{
+ struct pending_cmd *cmd;
+ int err;
+
+ cmd = mgmt_pending_find(MGMT_OP_STOP_DISCOVERY, hdev);
+ if (!cmd)
+ return -ENOENT;
+
+ err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
+ &hdev->discovery.type, sizeof(hdev->discovery.type));
+ mgmt_pending_remove(cmd);
+
+ return err;
+}
+
+static void stop_discovery_complete(struct hci_dev *hdev, u8 status)
+{
+ BT_DBG("status %d", status);
+
+ hci_dev_lock(hdev);
+
+ if (status) {
+ mgmt_stop_discovery_failed(hdev, status);
+ goto unlock;
+ }
+
+ hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+
+unlock:
+ hci_dev_unlock(hdev);
+}
+
static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
u16 len)
{
@@ -2747,6 +2846,8 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
struct pending_cmd *cmd;
struct hci_cp_remote_name_req_cancel cp;
struct inquiry_entry *e;
+ struct hci_request req;
+ struct hci_cp_le_set_scan_enable enable_cp;
int err;
BT_DBG("%s", hdev->name);
@@ -2773,12 +2874,20 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
goto unlock;
}
+ hci_req_init(&req, hdev);
+
switch (hdev->discovery.state) {
case DISCOVERY_FINDING:
- if (test_bit(HCI_INQUIRY, &hdev->flags))
- err = hci_cancel_inquiry(hdev);
- else
- err = hci_cancel_le_scan(hdev);
+ if (test_bit(HCI_INQUIRY, &hdev->flags)) {
+ hci_req_add(&req, HCI_OP_INQUIRY_CANCEL, 0, NULL);
+ } else {
+ cancel_delayed_work(&hdev->le_scan_disable);
+
+ memset(&enable_cp, 0, sizeof(enable_cp));
+ enable_cp.enable = LE_SCAN_DISABLE;
+ hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE,
+ sizeof(enable_cp), &enable_cp);
+ }
break;
@@ -2796,16 +2905,22 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
}
bacpy(&cp.bdaddr, &e->data.bdaddr);
- err = hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ_CANCEL,
- sizeof(cp), &cp);
+ hci_req_add(&req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp),
+ &cp);
break;
default:
BT_DBG("unknown discovery state %u", hdev->discovery.state);
- err = -EFAULT;
+
+ mgmt_pending_remove(cmd);
+ err = cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
+ MGMT_STATUS_FAILED, &mgmt_cp->type,
+ sizeof(mgmt_cp->type));
+ goto unlock;
}
+ err = hci_req_run(&req, stop_discovery_complete);
if (err < 0)
mgmt_pending_remove(cmd);
else
@@ -4063,6 +4178,9 @@ int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
struct mgmt_ev_device_found *ev = (void *) buf;
size_t ev_size;
+ if (!hci_discovery_active(hdev))
+ return -EPERM;
+
/* Leave 5 bytes for a potential CoD field */
if (sizeof(*ev) + eir_len + 5 > sizeof(buf))
return -EINVAL;
@@ -4114,43 +4232,6 @@ int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
sizeof(*ev) + eir_len, NULL);
}
-int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status)
-{
- struct pending_cmd *cmd;
- u8 type;
- int err;
-
- hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
-
- cmd = mgmt_pending_find(MGMT_OP_START_DISCOVERY, hdev);
- if (!cmd)
- return -ENOENT;
-
- type = hdev->discovery.type;
-
- err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
- &type, sizeof(type));
- mgmt_pending_remove(cmd);
-
- return err;
-}
-
-int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status)
-{
- struct pending_cmd *cmd;
- int err;
-
- cmd = mgmt_pending_find(MGMT_OP_STOP_DISCOVERY, hdev);
- if (!cmd)
- return -ENOENT;
-
- err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
- &hdev->discovery.type, sizeof(hdev->discovery.type));
- mgmt_pending_remove(cmd);
-
- return err;
-}
-
int mgmt_discovering(struct hci_dev *hdev, u8 discovering)
{
struct mgmt_ev_discovering ev;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-18 11:00:02 +0000