Commit 8c1d787b authored by Gustavo Padovan's avatar Gustavo Padovan
Browse files

Bluetooth: Move conn to struct l2cap_chan 



There is no need to the socket deal directly with the channel, most of the
time it cares about the channel only.

Signed-off-by: default avatarGustavo F. Padovan <padovan@profusion.mobi>
parent fe4128e0

include/net/bluetooth/l2cap.h

+4 −3
Original line number Diff line number Diff line
@@ -284,6 +284,9 @@ struct srej_list { 


struct l2cap_chan {

	struct sock *sk;



	struct l2cap_conn	*conn;



	__le16		psm;

	__u16		dcid;

	__u16		scid;
@@ -385,8 +388,6 @@ struct l2cap_conn { 


struct l2cap_pinfo {

	struct bt_sock	bt;



	struct l2cap_conn	*conn;

	struct l2cap_chan	*chan;

};
@@ -447,7 +448,7 @@ int l2cap_init_sockets(void); 
void l2cap_cleanup_sockets(void);



void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len, void *data);

void __l2cap_connect_rsp_defer(struct sock *sk);

void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);

int __l2cap_wait_ack(struct sock *sk);



struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len);

net/bluetooth/l2cap_core.c

+40 −52
Original line number Diff line number Diff line
@@ -169,7 +169,7 @@ static void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan) 


	conn->disc_reason = 0x13;



	l2cap_pi(sk)->conn = conn;

	chan->conn = conn;



	if (sk->sk_type == SOCK_SEQPACKET || sk->sk_type == SOCK_STREAM) {

		if (conn->hcon->type == LE_LINK) {
@@ -204,7 +204,7 @@ static void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan) 
void l2cap_chan_del(struct l2cap_chan *chan, int err)

{

	struct sock *sk = chan->sk;

	struct l2cap_conn *conn = l2cap_pi(sk)->conn;

	struct l2cap_conn *conn = chan->conn;

	struct sock *parent = bt_sk(sk)->parent;



	l2cap_sock_clear_timer(sk);
@@ -218,7 +218,7 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err) 
		write_unlock_bh(&conn->chan_lock);

		__sock_put(sk);



		l2cap_pi(sk)->conn = NULL;

		chan->conn = NULL;

		hci_conn_put(conn->hcon);

	}
@@ -296,7 +296,7 @@ static inline u8 l2cap_get_auth_type(struct l2cap_chan *chan) 
/* Service level security */

static inline int l2cap_check_security(struct l2cap_chan *chan)

{

	struct l2cap_conn *conn = l2cap_pi(chan->sk)->conn;

	struct l2cap_conn *conn = chan->conn;

	__u8 auth_type;



	auth_type = l2cap_get_auth_type(chan);
@@ -349,7 +349,7 @@ static inline void l2cap_send_sframe(struct l2cap_chan *chan, u16 control) 
	struct sk_buff *skb;

	struct l2cap_hdr *lh;

	struct l2cap_pinfo *pi = l2cap_pi(chan->sk);

	struct l2cap_conn *conn = pi->conn;

	struct l2cap_conn *conn = chan->conn;

	struct sock *sk = (struct sock *)pi;

	int count, hlen = L2CAP_HDR_SIZE + 2;

	u8 flags;
@@ -394,7 +394,7 @@ static inline void l2cap_send_sframe(struct l2cap_chan *chan, u16 control) 
	else

		flags = ACL_START;



	hci_send_acl(pi->conn->hcon, skb, flags);

	hci_send_acl(chan->conn->hcon, skb, flags);

}



static inline void l2cap_send_rr_or_rnr(struct l2cap_chan *chan, u16 control)
@@ -417,8 +417,7 @@ static inline int __l2cap_no_conn_pending(struct l2cap_chan *chan) 


static void l2cap_do_start(struct l2cap_chan *chan)

{

	struct sock *sk = chan->sk;

	struct l2cap_conn *conn = l2cap_pi(sk)->conn;

	struct l2cap_conn *conn = chan->conn;



	if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT) {

		if (!(conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE))
@@ -920,12 +919,13 @@ int l2cap_chan_connect(struct l2cap_chan *chan) 


int __l2cap_wait_ack(struct sock *sk)

{

	struct l2cap_chan *chan = l2cap_pi(sk)->chan;

	DECLARE_WAITQUEUE(wait, current);

	int err = 0;

	int timeo = HZ/5;



	add_wait_queue(sk_sleep(sk), &wait);

	while ((l2cap_pi(sk)->chan->unacked_frames > 0 && l2cap_pi(sk)->conn)) {

	while ((chan->unacked_frames > 0 && chan->conn)) {

		set_current_state(TASK_INTERRUPTIBLE);



		if (!timeo)
@@ -958,7 +958,7 @@ static void l2cap_monitor_timeout(unsigned long arg) 


	bh_lock_sock(sk);

	if (chan->retry_count >= chan->remote_max_tx) {

		l2cap_send_disconn_req(l2cap_pi(sk)->conn, chan, ECONNABORTED);

		l2cap_send_disconn_req(chan->conn, chan, ECONNABORTED);

		bh_unlock_sock(sk);

		return;

	}
@@ -1008,8 +1008,7 @@ static void l2cap_drop_acked_frames(struct l2cap_chan *chan) 


void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)

{

	struct sock *sk = chan->sk;

	struct hci_conn *hcon = l2cap_pi(sk)->conn->hcon;

	struct hci_conn *hcon = chan->conn->hcon;

	u16 flags;



	BT_DBG("chan %p, skb %p len %d", chan, skb, skb->len);
@@ -1045,8 +1044,6 @@ void l2cap_streaming_send(struct l2cap_chan *chan) 


static void l2cap_retransmit_one_frame(struct l2cap_chan *chan, u8 tx_seq)

{

	struct sock *sk = chan->sk;

	struct l2cap_pinfo *pi = l2cap_pi(sk);

	struct sk_buff *skb, *tx_skb;

	u16 control, fcs;
@@ -1065,7 +1062,7 @@ static void l2cap_retransmit_one_frame(struct l2cap_chan *chan, u8 tx_seq) 


	if (chan->remote_max_tx &&

			bt_cb(skb)->retries == chan->remote_max_tx) {

		l2cap_send_disconn_req(pi->conn, chan, ECONNABORTED);

		l2cap_send_disconn_req(chan->conn, chan, ECONNABORTED);

		return;

	}
@@ -1096,7 +1093,6 @@ int l2cap_ertm_send(struct l2cap_chan *chan) 
{

	struct sk_buff *skb, *tx_skb;

	struct sock *sk = chan->sk;

	struct l2cap_pinfo *pi = l2cap_pi(sk);

	u16 control, fcs;

	int nsent = 0;
@@ -1107,7 +1103,7 @@ int l2cap_ertm_send(struct l2cap_chan *chan) 


		if (chan->remote_max_tx &&

				bt_cb(skb)->retries == chan->remote_max_tx) {

			l2cap_send_disconn_req(pi->conn, chan, ECONNABORTED);

			l2cap_send_disconn_req(chan->conn, chan, ECONNABORTED);

			break;

		}
@@ -1203,7 +1199,7 @@ static void l2cap_send_srejtail(struct l2cap_chan *chan) 


static inline int l2cap_skbuff_fromiovec(struct sock *sk, struct msghdr *msg, int len, int count, struct sk_buff *skb)

{

	struct l2cap_conn *conn = l2cap_pi(sk)->conn;

	struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;

	struct sk_buff **frag;

	int err, sent = 0;
@@ -1236,7 +1232,7 @@ static inline int l2cap_skbuff_fromiovec(struct sock *sk, struct msghdr *msg, in 
struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)

{

	struct sock *sk = chan->sk;

	struct l2cap_conn *conn = l2cap_pi(sk)->conn;

	struct l2cap_conn *conn = chan->conn;

	struct sk_buff *skb;

	int err, count, hlen = L2CAP_HDR_SIZE + 2;

	struct l2cap_hdr *lh;
@@ -1266,7 +1262,7 @@ struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct msghdr 
struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)

{

	struct sock *sk = chan->sk;

	struct l2cap_conn *conn = l2cap_pi(sk)->conn;

	struct l2cap_conn *conn = chan->conn;

	struct sk_buff *skb;

	int err, count, hlen = L2CAP_HDR_SIZE;

	struct l2cap_hdr *lh;
@@ -1295,7 +1291,7 @@ struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan, struct msghdr *m 
struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len, u16 control, u16 sdulen)

{

	struct sock *sk = chan->sk;

	struct l2cap_conn *conn = l2cap_pi(sk)->conn;

	struct l2cap_conn *conn = chan->conn;

	struct sk_buff *skb;

	int err, count, hlen = L2CAP_HDR_SIZE + 2;

	struct l2cap_hdr *lh;
@@ -1611,7 +1607,6 @@ static inline __u8 l2cap_select_mode(__u8 mode, __u16 remote_feat_mask) 


static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)

{

	struct l2cap_pinfo *pi = l2cap_pi(chan->sk);

	struct l2cap_conf_req *req = data;

	struct l2cap_conf_rfc rfc = { .mode = chan->mode };

	void *ptr = req->data;
@@ -1629,7 +1624,7 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data) 


		/* fall through */

	default:

		chan->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);

		chan->mode = l2cap_select_mode(rfc.mode, chan->conn->feat_mask);

		break;

	}
@@ -1639,8 +1634,8 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data) 


	switch (chan->mode) {

	case L2CAP_MODE_BASIC:

		if (!(pi->conn->feat_mask & L2CAP_FEAT_ERTM) &&

				!(pi->conn->feat_mask & L2CAP_FEAT_STREAMING))

		if (!(chan->conn->feat_mask & L2CAP_FEAT_ERTM) &&

				!(chan->conn->feat_mask & L2CAP_FEAT_STREAMING))

			break;



		rfc.mode            = L2CAP_MODE_BASIC;
@@ -1661,13 +1656,13 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data) 
		rfc.retrans_timeout = 0;

		rfc.monitor_timeout = 0;

		rfc.max_pdu_size    = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);

		if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)

			rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);

		if (L2CAP_DEFAULT_MAX_PDU_SIZE > chan->conn->mtu - 10)

			rfc.max_pdu_size = cpu_to_le16(chan->conn->mtu - 10);



		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),

							(unsigned long) &rfc);



		if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))

		if (!(chan->conn->feat_mask & L2CAP_FEAT_FCS))

			break;



		if (chan->fcs == L2CAP_FCS_NONE ||
@@ -1684,13 +1679,13 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data) 
		rfc.retrans_timeout = 0;

		rfc.monitor_timeout = 0;

		rfc.max_pdu_size    = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);

		if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)

			rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);

		if (L2CAP_DEFAULT_MAX_PDU_SIZE > chan->conn->mtu - 10)

			rfc.max_pdu_size = cpu_to_le16(chan->conn->mtu - 10);



		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),

							(unsigned long) &rfc);



		if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))

		if (!(chan->conn->feat_mask & L2CAP_FEAT_FCS))

			break;



		if (chan->fcs == L2CAP_FCS_NONE ||
@@ -1709,7 +1704,6 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data) 


static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data)

{

	struct l2cap_pinfo *pi = l2cap_pi(chan->sk);

	struct l2cap_conf_rsp *rsp = data;

	void *ptr = rsp->data;

	void *req = chan->conf_req;
@@ -1769,7 +1763,7 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data) 
	case L2CAP_MODE_ERTM:

		if (!(chan->conf_state & L2CAP_CONF_STATE2_DEVICE)) {

			chan->mode = l2cap_select_mode(rfc.mode,

					pi->conn->feat_mask);

					chan->conn->feat_mask);

			break;

		}
@@ -1814,8 +1808,8 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data) 
			chan->remote_tx_win = rfc.txwin_size;

			chan->remote_max_tx = rfc.max_transmit;



			if (le16_to_cpu(rfc.max_pdu_size) > pi->conn->mtu - 10)

				rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);

			if (le16_to_cpu(rfc.max_pdu_size) > chan->conn->mtu - 10)

				rfc.max_pdu_size = cpu_to_le16(chan->conn->mtu - 10);



			chan->remote_mps = le16_to_cpu(rfc.max_pdu_size);
@@ -1832,8 +1826,8 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data) 
			break;



		case L2CAP_MODE_STREAMING:

			if (le16_to_cpu(rfc.max_pdu_size) > pi->conn->mtu - 10)

				rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);

			if (le16_to_cpu(rfc.max_pdu_size) > chan->conn->mtu - 10)

				rfc.max_pdu_size = cpu_to_le16(chan->conn->mtu - 10);



			chan->remote_mps = le16_to_cpu(rfc.max_pdu_size);
@@ -1943,15 +1937,12 @@ static int l2cap_build_conf_rsp(struct l2cap_chan *chan, void *data, u16 result, 
	return ptr - data;

}



void __l2cap_connect_rsp_defer(struct sock *sk)

void __l2cap_connect_rsp_defer(struct l2cap_chan *chan)

{

	struct l2cap_conn_rsp rsp;

	struct l2cap_conn *conn = l2cap_pi(sk)->conn;

	struct l2cap_chan *chan = l2cap_pi(sk)->chan;

	struct l2cap_conn *conn = chan->conn;

	u8 buf[128];



	sk->sk_state = BT_CONFIG;



	rsp.scid   = cpu_to_le16(chan->dcid);

	rsp.dcid   = cpu_to_le16(chan->scid);

	rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS);
@@ -2856,7 +2847,6 @@ static int l2cap_add_to_srej_queue(struct l2cap_chan *chan, struct sk_buff *skb, 


static int l2cap_ertm_reassembly_sdu(struct l2cap_chan *chan, struct sk_buff *skb, u16 control)

{

	struct l2cap_pinfo *pi = l2cap_pi(chan->sk);

	struct sk_buff *_skb;

	int err;
@@ -2957,7 +2947,7 @@ static int l2cap_ertm_reassembly_sdu(struct l2cap_chan *chan, struct sk_buff *sk 
	chan->sdu = NULL;



disconnect:

	l2cap_send_disconn_req(pi->conn, chan, ECONNRESET);

	l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);

	kfree_skb(skb);

	return 0;

}
@@ -3018,7 +3008,7 @@ static void l2cap_busy_work(struct work_struct *work) 


		if (n_tries++ > L2CAP_LOCAL_BUSY_TRIES) {

			err = -EBUSY;

			l2cap_send_disconn_req(l2cap_pi(sk)->conn, chan, EBUSY);

			l2cap_send_disconn_req(chan->conn, chan, EBUSY);

			break;

		}
@@ -3236,7 +3226,6 @@ static void l2cap_send_srejframe(struct l2cap_chan *chan, u8 tx_seq) 


static inline int l2cap_data_channel_iframe(struct l2cap_chan *chan, u16 rx_control, struct sk_buff *skb)

{

	struct l2cap_pinfo *pi = l2cap_pi(chan->sk);

	u8 tx_seq = __get_txseq(rx_control);

	u8 req_seq = __get_reqseq(rx_control);

	u8 sar = rx_control >> L2CAP_CTRL_SAR_SHIFT;
@@ -3267,7 +3256,7 @@ static inline int l2cap_data_channel_iframe(struct l2cap_chan *chan, u16 rx_cont 


	/* invalid tx_seq */

	if (tx_seq_offset >= chan->tx_win) {

		l2cap_send_disconn_req(pi->conn, chan, ECONNRESET);

		l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);

		goto drop;

	}
@@ -3534,7 +3523,6 @@ static inline int l2cap_data_channel_sframe(struct l2cap_chan *chan, u16 rx_cont 
static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb)

{

	struct l2cap_chan *chan = l2cap_pi(sk)->chan;

	struct l2cap_pinfo *pi = l2cap_pi(sk);

	u16 control;

	u8 req_seq;

	int len, next_tx_seq_offset, req_seq_offset;
@@ -3558,7 +3546,7 @@ static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb) 
		len -= 2;



	if (len > chan->mps) {

		l2cap_send_disconn_req(pi->conn, chan, ECONNRESET);

		l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);

		goto drop;

	}
@@ -3574,13 +3562,13 @@ static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb) 


	/* check for invalid req-seq */

	if (req_seq_offset > next_tx_seq_offset) {

		l2cap_send_disconn_req(pi->conn, chan, ECONNRESET);

		l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);

		goto drop;

	}



	if (__is_iframe(control)) {

		if (len < 0) {

			l2cap_send_disconn_req(pi->conn, chan, ECONNRESET);

			l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);

			goto drop;

		}
@@ -3588,7 +3576,7 @@ static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb) 
	} else {

		if (len != 0) {

			BT_ERR("%d", len);

			l2cap_send_disconn_req(pi->conn, chan, ECONNRESET);

			l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);

			goto drop;

		}

net/bluetooth/l2cap_sock.c

+7 −5
Original line number Diff line number Diff line
@@ -455,8 +455,8 @@ static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __us 
			break;

		}



		cinfo.hci_handle = l2cap_pi(sk)->conn->hcon->handle;

		memcpy(cinfo.dev_class, l2cap_pi(sk)->conn->hcon->dev_class, 3);

		cinfo.hci_handle = chan->conn->hcon->handle;

		memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3);



		len = min_t(unsigned int, len, sizeof(cinfo));

		if (copy_to_user(optval, (char *) &cinfo, len))
@@ -690,7 +690,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, ch 
		}



		if (opt == BT_FLUSHABLE_OFF) {

			struct l2cap_conn *conn = l2cap_pi(sk)->conn;

			struct l2cap_conn *conn = chan->conn;

			/* proceed futher only when we have l2cap_conn and

			   No Flush support in the LM */

			if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) {
@@ -823,7 +823,9 @@ static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct ms 
	lock_sock(sk);



	if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) {

		__l2cap_connect_rsp_defer(sk);

		sk->sk_state = BT_CONFIG;



		__l2cap_connect_rsp_defer(l2cap_pi(sk)->chan);

		release_sock(sk);

		return 0;

	}
@@ -878,8 +880,8 @@ static void l2cap_sock_cleanup_listen(struct sock *parent) 


void __l2cap_sock_close(struct sock *sk, int reason)

{

	struct l2cap_conn *conn = l2cap_pi(sk)->conn;

	struct l2cap_chan *chan = l2cap_pi(sk)->chan;

	struct l2cap_conn *conn = chan->conn;



	BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);

net/bluetooth/rfcomm/core.c

+5 −3
Original line number Diff line number Diff line
@@ -232,6 +232,8 @@ static int rfcomm_l2sock_create(struct socket **sock) 
static inline int rfcomm_check_security(struct rfcomm_dlc *d)

{

	struct sock *sk = d->session->sock->sk;

	struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;



	__u8 auth_type;



	switch (d->sec_level) {
@@ -246,8 +248,7 @@ static inline int rfcomm_check_security(struct rfcomm_dlc *d) 
		break;

	}



	return hci_conn_security(l2cap_pi(sk)->conn->hcon, d->sec_level,

								auth_type);

	return hci_conn_security(conn->hcon, d->sec_level, auth_type);

}



static void rfcomm_session_timeout(unsigned long arg)
@@ -1241,6 +1242,7 @@ static int rfcomm_recv_disc(struct rfcomm_session *s, u8 dlci) 
void rfcomm_dlc_accept(struct rfcomm_dlc *d)

{

	struct sock *sk = d->session->sock->sk;

	struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;



	BT_DBG("dlc %p", d);
@@ -1254,7 +1256,7 @@ void rfcomm_dlc_accept(struct rfcomm_dlc *d) 
	rfcomm_dlc_unlock(d);



	if (d->role_switch)

		hci_conn_switch_role(l2cap_pi(sk)->conn->hcon, 0x00);

		hci_conn_switch_role(conn->hcon, 0x00);



	rfcomm_send_msc(d->session, 1, d->dlci, d->v24_sig);

}

net/bluetooth/rfcomm/sock.c

+3 −2
Original line number Diff line number Diff line
@@ -743,6 +743,7 @@ static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __u 
	struct sock *sk = sock->sk;

	struct sock *l2cap_sk;

	struct rfcomm_conninfo cinfo;

	struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;

	int len, err = 0;

	u32 opt;
@@ -787,8 +788,8 @@ static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __u 


		l2cap_sk = rfcomm_pi(sk)->dlc->session->sock->sk;



		cinfo.hci_handle = l2cap_pi(l2cap_sk)->conn->hcon->handle;

		memcpy(cinfo.dev_class, l2cap_pi(l2cap_sk)->conn->hcon->dev_class, 3);

		cinfo.hci_handle = conn->hcon->handle;

		memcpy(cinfo.dev_class, conn->hcon->dev_class, 3);



		len = min_t(unsigned int, len, sizeof(cinfo));

		if (copy_to_user(optval, (char *) &cinfo, len))