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Bluetooth: Take advantage of connection abort helpers
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Convert the various places mapping connection state to
disconnect/cancel HCI command to use the new hci_abort_conn helper
API.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Johan Hedberg authored and Marcel Holtmann committed Oct 22, 2015
1 parent dcc0f0d commit 89e0ccc
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Showing 2 changed files with 11 additions and 104 deletions.
79 changes: 8 additions & 71 deletions net/bluetooth/hci_conn.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -59,11 +59,6 @@ static const struct sco_param esco_param_msbc[] = {
{ EDR_ESCO_MASK | ESCO_EV3, 0x0008, 0x02 }, /* T1 */
};

static void hci_le_create_connection_cancel(struct hci_conn *conn)
{
hci_send_cmd(conn->hdev, HCI_OP_LE_CREATE_CONN_CANCEL, 0, NULL);
}

/* This function requires the caller holds hdev->lock */
static void hci_connect_le_scan_cleanup(struct hci_conn *conn)
{
Expand Down Expand Up @@ -229,29 +224,6 @@ static void hci_acl_create_connection(struct hci_conn *conn)
hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp);
}

static void hci_acl_create_connection_cancel(struct hci_conn *conn)
{
struct hci_cp_create_conn_cancel cp;

BT_DBG("hcon %p", conn);

if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2)
return;

bacpy(&cp.bdaddr, &conn->dst);
hci_send_cmd(conn->hdev, HCI_OP_CREATE_CONN_CANCEL, sizeof(cp), &cp);
}

static void hci_reject_sco(struct hci_conn *conn)
{
struct hci_cp_reject_sync_conn_req cp;

cp.reason = HCI_ERROR_REJ_LIMITED_RESOURCES;
bacpy(&cp.bdaddr, &conn->dst);

hci_send_cmd(conn->hdev, HCI_OP_REJECT_SYNC_CONN_REQ, sizeof(cp), &cp);
}

int hci_disconnect(struct hci_conn *conn, __u8 reason)
{
struct hci_cp_disconnect cp;
Expand Down Expand Up @@ -279,20 +251,6 @@ int hci_disconnect(struct hci_conn *conn, __u8 reason)
return hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp);
}

static void hci_amp_disconn(struct hci_conn *conn)
{
struct hci_cp_disconn_phy_link cp;

BT_DBG("hcon %p", conn);

conn->state = BT_DISCONN;

cp.phy_handle = HCI_PHY_HANDLE(conn->handle);
cp.reason = hci_proto_disconn_ind(conn);
hci_send_cmd(conn->hdev, HCI_OP_DISCONN_PHY_LINK,
sizeof(cp), &cp);
}

static void hci_add_sco(struct hci_conn *conn, __u16 handle)
{
struct hci_dev *hdev = conn->hdev;
Expand Down Expand Up @@ -456,35 +414,14 @@ static void hci_conn_timeout(struct work_struct *work)
if (refcnt > 0)
return;

switch (conn->state) {
case BT_CONNECT:
case BT_CONNECT2:
if (conn->out) {
if (conn->type == ACL_LINK)
hci_acl_create_connection_cancel(conn);
else if (conn->type == LE_LINK) {
if (test_bit(HCI_CONN_SCANNING, &conn->flags))
hci_connect_le_scan_remove(conn);
else
hci_le_create_connection_cancel(conn);
}
} else if (conn->type == SCO_LINK || conn->type == ESCO_LINK) {
hci_reject_sco(conn);
}
break;
case BT_CONFIG:
case BT_CONNECTED:
if (conn->type == AMP_LINK) {
hci_amp_disconn(conn);
} else {
__u8 reason = hci_proto_disconn_ind(conn);
hci_disconnect(conn, reason);
}
break;
default:
conn->state = BT_CLOSED;
break;
/* LE connections in scanning state need special handling */
if (conn->state == BT_CONNECT && conn->type == LE_LINK &&
test_bit(HCI_CONN_SCANNING, &conn->flags)) {
hci_connect_le_scan_remove(conn);
return;
}

hci_abort_conn(conn, hci_proto_disconn_ind(conn));
}

/* Enter sniff mode */
Expand Down Expand Up @@ -552,7 +489,7 @@ static void le_conn_timeout(struct work_struct *work)
return;
}

hci_le_create_connection_cancel(conn);
hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM);
}

struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
Expand Down
36 changes: 3 additions & 33 deletions net/bluetooth/mgmt.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1639,35 +1639,8 @@ static int clean_up_hci_state(struct hci_dev *hdev)
discov_stopped = hci_stop_discovery(&req);

list_for_each_entry(conn, &hdev->conn_hash.list, list) {
struct hci_cp_disconnect dc;
struct hci_cp_reject_conn_req rej;

switch (conn->state) {
case BT_CONNECTED:
case BT_CONFIG:
dc.handle = cpu_to_le16(conn->handle);
dc.reason = 0x15; /* Terminated due to Power Off */
hci_req_add(&req, HCI_OP_DISCONNECT, sizeof(dc), &dc);
break;
case BT_CONNECT:
if (conn->type == LE_LINK)
hci_req_add(&req, HCI_OP_LE_CREATE_CONN_CANCEL,
0, NULL);
else if (conn->type == ACL_LINK)
hci_req_add(&req, HCI_OP_CREATE_CONN_CANCEL,
6, &conn->dst);
break;
case BT_CONNECT2:
bacpy(&rej.bdaddr, &conn->dst);
rej.reason = 0x15; /* Terminated due to Power Off */
if (conn->type == ACL_LINK)
hci_req_add(&req, HCI_OP_REJECT_CONN_REQ,
sizeof(rej), &rej);
else if (conn->type == SCO_LINK)
hci_req_add(&req, HCI_OP_REJECT_SYNC_CONN_REQ,
sizeof(rej), &rej);
break;
}
/* 0x15 == Terminated due to Power Off */
__hci_abort_conn(&req, conn, 0x15);
}

err = hci_req_run(&req, clean_up_hci_complete);
Expand Down Expand Up @@ -3053,7 +3026,6 @@ static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data,
struct mgmt_cp_unpair_device *cp = data;
struct mgmt_rp_unpair_device rp;
struct hci_conn_params *params;
struct hci_cp_disconnect dc;
struct mgmt_pending_cmd *cmd;
struct hci_conn *conn;
u8 addr_type;
Expand Down Expand Up @@ -3170,9 +3142,7 @@ static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data,

cmd->cmd_complete = addr_cmd_complete;

dc.handle = cpu_to_le16(conn->handle);
dc.reason = 0x13; /* Remote User Terminated Connection */
err = hci_send_cmd(hdev, HCI_OP_DISCONNECT, sizeof(dc), &dc);
err = hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM);
if (err < 0)
mgmt_pending_remove(cmd);

Expand Down

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