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Bluetooth: Introduce hci_req helper to abort a connection

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There are several different places needing to make sure that a
connection gets disconnected or canceled. The exact action needed
depends on the connection state, so centralizing this logic can save
quite a lot of code duplication.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2015-10-22 10:49:37 +03:00 • committed by Marcel Holtmann
parent a1857390e2
commit dcc0f0d9ce
2 changed files with 97 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

93
net/bluetooth/hci_request.c
View file

@ -564,3 +564,96 @@ void hci_update_background_scan(struct hci_dev *hdev)
if (err && err != -ENODATA) if (err && err != -ENODATA)
BT_ERR("Failed to run HCI request: err %d", err); BT_ERR("Failed to run HCI request: err %d", err);
} }
void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn,
u8 reason)
{
switch (conn->state) {
case BT_CONNECTED:
case BT_CONFIG:
if (conn->type == AMP_LINK) {
struct hci_cp_disconn_phy_link cp;
cp.phy_handle = HCI_PHY_HANDLE(conn->handle);
cp.reason = reason;
hci_req_add(req, HCI_OP_DISCONN_PHY_LINK, sizeof(cp),
&cp);
} else {
struct hci_cp_disconnect dc;
dc.handle = cpu_to_le16(conn->handle);
dc.reason = reason;
hci_req_add(req, HCI_OP_DISCONNECT, sizeof(dc), &dc);
}
conn->state = BT_DISCONN;
break;
case BT_CONNECT:
if (conn->type == LE_LINK) {
if (test_bit(HCI_CONN_SCANNING, &conn->flags))
break;
hci_req_add(req, HCI_OP_LE_CREATE_CONN_CANCEL,
0, NULL);
} else if (conn->type == ACL_LINK) {
if (req->hdev->hci_ver < BLUETOOTH_VER_1_2)
break;
hci_req_add(req, HCI_OP_CREATE_CONN_CANCEL,
6, &conn->dst);
}
break;
case BT_CONNECT2:
if (conn->type == ACL_LINK) {
struct hci_cp_reject_conn_req rej;
bacpy(&rej.bdaddr, &conn->dst);
rej.reason = reason;
hci_req_add(req, HCI_OP_REJECT_CONN_REQ,
sizeof(rej), &rej);
} else if (conn->type == SCO_LINK || conn->type == ESCO_LINK) {
struct hci_cp_reject_sync_conn_req rej;
bacpy(&rej.bdaddr, &conn->dst);
/* SCO rejection has its own limited set of
* allowed error values (0x0D-0x0F) which isn't
* compatible with most values passed to this
* function. To be safe hard-code one of the
* values that's suitable for SCO.
*/
rej.reason = HCI_ERROR_REMOTE_LOW_RESOURCES;
hci_req_add(req, HCI_OP_REJECT_SYNC_CONN_REQ,
sizeof(rej), &rej);
}
break;
default:
conn->state = BT_CLOSED;
break;
}
}
static void abort_conn_complete(struct hci_dev *hdev, u8 status, u16 opcode)
{
if (status)
BT_DBG("Failed to abort connection: status 0x%2.2x", status);
}
int hci_abort_conn(struct hci_conn *conn, u8 reason)
{
struct hci_request req;
int err;
hci_req_init(&req, conn->hdev);
__hci_abort_conn(&req, conn, reason);
err = hci_req_run(&req, abort_conn_complete);
if (err && err != -ENODATA) {
BT_ERR("Failed to run HCI request: err %d", err);
return err;
}
return 0;
}

4
net/bluetooth/hci_request.h
View file

@ -55,3 +55,7 @@ int hci_update_random_address(struct hci_request *req, bool require_privacy,
void hci_update_background_scan(struct hci_dev *hdev); void hci_update_background_scan(struct hci_dev *hdev);
void __hci_update_background_scan(struct hci_request *req); void __hci_update_background_scan(struct hci_request *req);
int hci_abort_conn(struct hci_conn *conn, u8 reason);
void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn,
u8 reason);