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Bluetooth: Move hci_abort_conn to hci_conn.c

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hci_abort_conn() is a wrapper around a number of DISCONNECT and
CREATE_CONN_CANCEL commands that was being invoked from hci_request
request queues, which are now deprecated. There are two versions:
hci_abort_conn() which can be invoked from the hci_event thread, and
hci_abort_conn_sync() which can be invoked within a hci_sync cmd chain.

Signed-off-by: Brian Gix <brian.gix@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Brian Gix 2022-08-16 09:41:20 -07:00 committed by Luiz Augusto von Dentz
parent 278d933e12
commit 1a942de092
5 changed files with 91 additions and 95 deletions
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1
include/net/bluetooth/hci_core.h
View File

@ -2075,6 +2075,7 @@ int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
bdaddr_t *bdaddr, u8 addr_type);
int hci_abort_conn(struct hci_conn *conn, u8 reason);
u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
u16 to_multiplier);
void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,

76
net/bluetooth/hci_conn.c
View File

@ -2760,3 +2760,79 @@ u32 hci_conn_get_phy(struct hci_conn *conn)
return phys;
}
int hci_abort_conn(struct hci_conn *conn, u8 reason)
{
int r = 0;
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;
r = hci_send_cmd(conn->hdev, HCI_OP_DISCONN_PHY_LINK,
sizeof(cp), &cp);
} else {
struct hci_cp_disconnect dc;
dc.handle = cpu_to_le16(conn->handle);
dc.reason = reason;
r = hci_send_cmd(conn->hdev, 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;
r = hci_send_cmd(conn->hdev,
HCI_OP_LE_CREATE_CONN_CANCEL, 0, NULL);
} else if (conn->type == ACL_LINK) {
if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2)
break;
r = hci_send_cmd(conn->hdev,
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;
r = hci_send_cmd(conn->hdev,
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_REJ_LIMITED_RESOURCES;
r = hci_send_cmd(conn->hdev,
HCI_OP_REJECT_SYNC_CONN_REQ,
sizeof(rej), &rej);
}
break;
default:
conn->state = BT_CLOSED;
break;
}
return r;
}

93
net/bluetooth/hci_request.c
View File

@ -909,99 +909,6 @@ static void set_random_addr(struct hci_request *req, bdaddr_t *rpa)
hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, rpa);
}
static 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_REJ_LIMITED_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_dev_dbg(hdev, "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_dev_err(conn->hdev, "failed to run HCI request: err %d", err);
return err;
}
return 0;
}
void hci_request_setup(struct hci_dev *hdev)
{
INIT_DELAYED_WORK(&hdev->interleave_scan, interleave_scan_work);

1
net/bluetooth/hci_request.h
View File

@ -73,6 +73,5 @@ void hci_req_add_le_passive_scan(struct hci_request *req);
void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next);
int hci_abort_conn(struct hci_conn *conn, u8 reason);
void hci_request_setup(struct hci_dev *hdev);
void hci_request_cancel_all(struct hci_dev *hdev);

15
net/bluetooth/mgmt.c
View File

@ -3185,6 +3185,18 @@ unlock:
return err;
}
static int abort_conn_sync(struct hci_dev *hdev, void *data)
{
struct hci_conn *conn;
u16 handle = PTR_ERR(data);
conn = hci_conn_hash_lookup_handle(hdev, handle);
if (!conn)
return 0;
return hci_abort_conn_sync(hdev, conn, HCI_ERROR_REMOTE_USER_TERM);
}
static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
u16 len)
{
@ -3235,7 +3247,8 @@ static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
le_addr_type(addr->type));
if (conn->conn_reason == CONN_REASON_PAIR_DEVICE)
hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM);
hci_cmd_sync_queue(hdev, abort_conn_sync, ERR_PTR(conn->handle),
NULL);
unlock:
hci_dev_unlock(hdev);