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Commit 4343478f authored by Gustavo Padovan's avatar Gustavo Padovan
Browse files

Bluetooth: Move some more elements to struct l2cap_chan 



In this commit sec_level, force_reliable, role_switch and flushable.

Signed-off-by: default avatarGustavo F. Padovan <padovan@profusion.mobi>
parent 77a74c7e

include/net/bluetooth/l2cap.h

+7 −5
Original line number Diff line number Diff line
@@ -284,6 +284,12 @@ struct srej_list { 


struct l2cap_chan {

	struct sock *sk;



	__u8		sec_level;

	__u8		role_switch;

	__u8		force_reliable;

	__u8		flushable;



	__u8		ident;



	__u8		conf_req[64];
@@ -371,10 +377,6 @@ struct l2cap_pinfo { 
	__u8		mode;



	__u8		fcs;

	__u8		sec_level;

	__u8		role_switch;

	__u8		force_reliable;

	__u8		flushable;



	__u8		tx_win;

	__u8		max_tx;
@@ -452,7 +454,7 @@ struct sk_buff *l2cap_create_connless_pdu(struct sock *sk, struct msghdr *msg, s 
struct sk_buff *l2cap_create_basic_pdu(struct sock *sk, struct msghdr *msg, size_t len);

struct sk_buff *l2cap_create_iframe_pdu(struct sock *sk, struct msghdr *msg, size_t len, u16 control, u16 sdulen);

int l2cap_sar_segment_sdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len);

void l2cap_do_send(struct sock *sk, struct sk_buff *skb);

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

void l2cap_streaming_send(struct l2cap_chan *chan);

int l2cap_ertm_send(struct l2cap_chan *chan);

net/bluetooth/l2cap_core.c

+42 −36
Original line number Diff line number Diff line
@@ -262,10 +262,12 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err) 
	kfree(chan);

}



static inline u8 l2cap_get_auth_type(struct sock *sk)

static inline u8 l2cap_get_auth_type(struct l2cap_chan *chan)

{

	struct sock *sk = chan->sk;



	if (sk->sk_type == SOCK_RAW) {

		switch (l2cap_pi(sk)->sec_level) {

		switch (chan->sec_level) {

		case BT_SECURITY_HIGH:

			return HCI_AT_DEDICATED_BONDING_MITM;

		case BT_SECURITY_MEDIUM:
@@ -274,15 +276,15 @@ static inline u8 l2cap_get_auth_type(struct sock *sk) 
			return HCI_AT_NO_BONDING;

		}

	} else if (l2cap_pi(sk)->psm == cpu_to_le16(0x0001)) {

		if (l2cap_pi(sk)->sec_level == BT_SECURITY_LOW)

			l2cap_pi(sk)->sec_level = BT_SECURITY_SDP;

		if (chan->sec_level == BT_SECURITY_LOW)

			chan->sec_level = BT_SECURITY_SDP;



		if (l2cap_pi(sk)->sec_level == BT_SECURITY_HIGH)

		if (chan->sec_level == BT_SECURITY_HIGH)

			return HCI_AT_NO_BONDING_MITM;

		else

			return HCI_AT_NO_BONDING;

	} else {

		switch (l2cap_pi(sk)->sec_level) {

		switch (chan->sec_level) {

		case BT_SECURITY_HIGH:

			return HCI_AT_GENERAL_BONDING_MITM;

		case BT_SECURITY_MEDIUM:
@@ -294,15 +296,14 @@ static inline u8 l2cap_get_auth_type(struct sock *sk) 
}



/* Service level security */

static inline int l2cap_check_security(struct sock *sk)

static inline int l2cap_check_security(struct l2cap_chan *chan)

{

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

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

	__u8 auth_type;



	auth_type = l2cap_get_auth_type(sk);

	auth_type = l2cap_get_auth_type(chan);



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

								auth_type);

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

}



u8 l2cap_get_ident(struct l2cap_conn *conn)
@@ -425,7 +426,8 @@ static void l2cap_do_start(struct l2cap_chan *chan) 
		if (!(conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE))

			return;



		if (l2cap_check_security(sk) && __l2cap_no_conn_pending(chan)) {

		if (l2cap_check_security(chan) &&

				__l2cap_no_conn_pending(chan)) {

			struct l2cap_conn_req req;

			req.scid = cpu_to_le16(l2cap_pi(sk)->scid);

			req.psm  = l2cap_pi(sk)->psm;
@@ -515,7 +517,7 @@ static void l2cap_conn_start(struct l2cap_conn *conn) 
		if (sk->sk_state == BT_CONNECT) {

			struct l2cap_conn_req req;



			if (!l2cap_check_security(sk) ||

			if (!l2cap_check_security(chan) ||

					!__l2cap_no_conn_pending(chan)) {

				bh_unlock_sock(sk);

				continue;
@@ -549,7 +551,7 @@ static void l2cap_conn_start(struct l2cap_conn *conn) 
			rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);

			rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);



			if (l2cap_check_security(sk)) {

			if (l2cap_check_security(chan)) {

				if (bt_sk(sk)->defer_setup) {

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

					rsp.result = cpu_to_le16(L2CAP_CR_PEND);
@@ -722,7 +724,7 @@ static void l2cap_conn_unreliable(struct l2cap_conn *conn, int err) 
	list_for_each_entry(chan, &conn->chan_l, list) {

		struct sock *sk = chan->sk;



		if (l2cap_pi(sk)->force_reliable)

		if (chan->force_reliable)

			sk->sk_err = err;

	}
@@ -867,14 +869,14 @@ int l2cap_chan_connect(struct l2cap_chan *chan) 


	hci_dev_lock_bh(hdev);



	auth_type = l2cap_get_auth_type(sk);

	auth_type = l2cap_get_auth_type(chan);



	if (l2cap_pi(sk)->dcid == L2CAP_CID_LE_DATA)

		hcon = hci_connect(hdev, LE_LINK, dst,

					l2cap_pi(sk)->sec_level, auth_type);

					chan->sec_level, auth_type);

	else

		hcon = hci_connect(hdev, ACL_LINK, dst,

					l2cap_pi(sk)->sec_level, auth_type);

					chan->sec_level, auth_type);



	if (IS_ERR(hcon)) {

		err = PTR_ERR(hcon);
@@ -900,7 +902,7 @@ int l2cap_chan_connect(struct l2cap_chan *chan) 
		if (sk->sk_type != SOCK_SEQPACKET &&

				sk->sk_type != SOCK_STREAM) {

			l2cap_sock_clear_timer(sk);

			if (l2cap_check_security(sk))

			if (l2cap_check_security(chan))

				sk->sk_state = BT_CONNECTED;

		} else

			l2cap_do_start(chan);
@@ -1002,15 +1004,15 @@ static void l2cap_drop_acked_frames(struct l2cap_chan *chan) 
		del_timer(&chan->retrans_timer);

}



void l2cap_do_send(struct sock *sk, struct sk_buff *skb)

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

{

	struct l2cap_pinfo *pi = l2cap_pi(sk);

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

	struct sock *sk = chan->sk;

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

	u16 flags;



	BT_DBG("sk %p, skb %p len %d", sk, skb, skb->len);

	BT_DBG("chan %p, skb %p len %d", chan, skb, skb->len);



	if (!pi->flushable && lmp_no_flush_capable(hcon->hdev))

	if (!chan->flushable && lmp_no_flush_capable(hcon->hdev))

		flags = ACL_START_NO_FLUSH;

	else

		flags = ACL_START;
@@ -1035,7 +1037,7 @@ void l2cap_streaming_send(struct l2cap_chan *chan) 
			put_unaligned_le16(fcs, skb->data + skb->len - 2);

		}



		l2cap_do_send(sk, skb);

		l2cap_do_send(chan, skb);



		chan->next_tx_seq = (chan->next_tx_seq + 1) % 64;

	}
@@ -1087,7 +1089,7 @@ static void l2cap_retransmit_one_frame(struct l2cap_chan *chan, u8 tx_seq) 
		put_unaligned_le16(fcs, tx_skb->data + tx_skb->len - 2);

	}



	l2cap_do_send(sk, tx_skb);

	l2cap_do_send(chan, tx_skb);

}



int l2cap_ertm_send(struct l2cap_chan *chan)
@@ -1130,7 +1132,7 @@ int l2cap_ertm_send(struct l2cap_chan *chan) 
			put_unaligned_le16(fcs, skb->data + tx_skb->len - 2);

		}



		l2cap_do_send(sk, tx_skb);

		l2cap_do_send(chan, tx_skb);



		__mod_retrans_timer();
@@ -2100,7 +2102,7 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd 
	chan->ident = cmd->ident;



	if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE) {

		if (l2cap_check_security(sk)) {

		if (l2cap_check_security(chan)) {

			if (bt_sk(sk)->defer_setup) {

				sk->sk_state = BT_CONNECT2;

				result = L2CAP_CR_PEND;
@@ -3805,17 +3807,19 @@ static int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) 
	/* Find listening sockets and check their link_mode */

	read_lock(&l2cap_sk_list.lock);

	sk_for_each(sk, node, &l2cap_sk_list.head) {

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



		if (sk->sk_state != BT_LISTEN)

			continue;



		if (!bacmp(&bt_sk(sk)->src, &hdev->bdaddr)) {

			lm1 |= HCI_LM_ACCEPT;

			if (l2cap_pi(sk)->role_switch)

			if (chan->role_switch)

				lm1 |= HCI_LM_MASTER;

			exact++;

		} else if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY)) {

			lm2 |= HCI_LM_ACCEPT;

			if (l2cap_pi(sk)->role_switch)

			if (chan->role_switch)

				lm2 |= HCI_LM_MASTER;

		}

	}
@@ -3867,19 +3871,21 @@ static int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason) 
	return 0;

}



static inline void l2cap_check_encryption(struct sock *sk, u8 encrypt)

static inline void l2cap_check_encryption(struct l2cap_chan *chan, u8 encrypt)

{

	struct sock *sk = chan->sk;



	if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM)

		return;



	if (encrypt == 0x00) {

		if (l2cap_pi(sk)->sec_level == BT_SECURITY_MEDIUM) {

		if (chan->sec_level == BT_SECURITY_MEDIUM) {

			l2cap_sock_clear_timer(sk);

			l2cap_sock_set_timer(sk, HZ * 5);

		} else if (l2cap_pi(sk)->sec_level == BT_SECURITY_HIGH)

		} else if (chan->sec_level == BT_SECURITY_HIGH)

			__l2cap_sock_close(sk, ECONNREFUSED);

	} else {

		if (l2cap_pi(sk)->sec_level == BT_SECURITY_MEDIUM)

		if (chan->sec_level == BT_SECURITY_MEDIUM)

			l2cap_sock_clear_timer(sk);

	}

}
@@ -3908,7 +3914,7 @@ static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt) 


		if (!status && (sk->sk_state == BT_CONNECTED ||

						sk->sk_state == BT_CONFIG)) {

			l2cap_check_encryption(sk, encrypt);

			l2cap_check_encryption(chan, encrypt);

			bh_unlock_sock(sk);

			continue;

		}
@@ -4083,7 +4089,7 @@ static int l2cap_debugfs_show(struct seq_file *f, void *p) 
					batostr(&bt_sk(sk)->dst),

					sk->sk_state, __le16_to_cpu(pi->psm),

					pi->scid, pi->dcid,

					pi->imtu, pi->omtu, pi->sec_level,

					pi->imtu, pi->omtu, pi->chan->sec_level,

					pi->mode);

	}

net/bluetooth/l2cap_sock.c

+28 −24
Original line number Diff line number Diff line
@@ -51,7 +51,7 @@ static void l2cap_sock_timeout(unsigned long arg) 
	if (sk->sk_state == BT_CONNECTED || sk->sk_state == BT_CONFIG)

		reason = ECONNREFUSED;

	else if (sk->sk_state == BT_CONNECT &&

				l2cap_pi(sk)->sec_level != BT_SECURITY_SDP)

			l2cap_pi(sk)->chan->sec_level != BT_SECURITY_SDP)

		reason = ECONNREFUSED;

	else

		reason = ETIMEDOUT;
@@ -91,6 +91,7 @@ static struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src) 
static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)

{

	struct sock *sk = sock->sk;

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

	struct sockaddr_l2 la;

	int len, err = 0;
@@ -142,7 +143,7 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) 


		if (__le16_to_cpu(la.l2_psm) == 0x0001 ||

					__le16_to_cpu(la.l2_psm) == 0x0003)

			l2cap_pi(sk)->sec_level = BT_SECURITY_SDP;

			chan->sec_level = BT_SECURITY_SDP;

	}



	if (la.l2_cid)
@@ -382,6 +383,7 @@ static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *l 
static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)

{

	struct sock *sk = sock->sk;

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

	struct l2cap_options opts;

	struct l2cap_conninfo cinfo;

	int len, err = 0;
@@ -412,7 +414,7 @@ static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __us 
		break;



	case L2CAP_LM:

		switch (l2cap_pi(sk)->sec_level) {

		switch (chan->sec_level) {

		case BT_SECURITY_LOW:

			opt = L2CAP_LM_AUTH;

			break;
@@ -428,10 +430,10 @@ static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __us 
			break;

		}



		if (l2cap_pi(sk)->role_switch)

		if (chan->role_switch)

			opt |= L2CAP_LM_MASTER;



		if (l2cap_pi(sk)->force_reliable)

		if (chan->force_reliable)

			opt |= L2CAP_LM_RELIABLE;



		if (put_user(opt, (u32 __user *) optval))
@@ -467,6 +469,7 @@ static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __us 
static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)

{

	struct sock *sk = sock->sk;

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

	struct bt_security sec;

	int len, err = 0;
@@ -491,7 +494,7 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, ch 
			break;

		}



		sec.level = l2cap_pi(sk)->sec_level;

		sec.level = chan->sec_level;



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

		if (copy_to_user(optval, (char *) &sec, len))
@@ -511,7 +514,7 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, ch 
		break;



	case BT_FLUSHABLE:

		if (put_user(l2cap_pi(sk)->flushable, (u32 __user *) optval))

		if (put_user(chan->flushable, (u32 __user *) optval))

			err = -EFAULT;



		break;
@@ -592,14 +595,14 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us 
		}



		if (opt & L2CAP_LM_AUTH)

			l2cap_pi(sk)->sec_level = BT_SECURITY_LOW;

			chan->sec_level = BT_SECURITY_LOW;

		if (opt & L2CAP_LM_ENCRYPT)

			l2cap_pi(sk)->sec_level = BT_SECURITY_MEDIUM;

			chan->sec_level = BT_SECURITY_MEDIUM;

		if (opt & L2CAP_LM_SECURE)

			l2cap_pi(sk)->sec_level = BT_SECURITY_HIGH;

			chan->sec_level = BT_SECURITY_HIGH;



		l2cap_pi(sk)->role_switch    = (opt & L2CAP_LM_MASTER);

		l2cap_pi(sk)->force_reliable = (opt & L2CAP_LM_RELIABLE);

		chan->role_switch    = (opt & L2CAP_LM_MASTER);

		chan->force_reliable = (opt & L2CAP_LM_RELIABLE);

		break;



	default:
@@ -614,6 +617,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us 
static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)

{

	struct sock *sk = sock->sk;

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

	struct bt_security sec;

	int len, err = 0;

	u32 opt;
@@ -650,7 +654,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, ch 
			break;

		}



		l2cap_pi(sk)->sec_level = sec.level;

		chan->sec_level = sec.level;

		break;



	case BT_DEFER_SETUP:
@@ -688,7 +692,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, ch 
			}

		}



		l2cap_pi(sk)->flushable = opt;

		chan->flushable = opt;

		break;



	default:
@@ -730,7 +734,7 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms 
		if (IS_ERR(skb)) {

			err = PTR_ERR(skb);

		} else {

			l2cap_do_send(sk, skb);

			l2cap_do_send(pi->chan, skb);

			err = len;

		}

		goto done;
@@ -751,7 +755,7 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms 
			goto done;

		}



		l2cap_do_send(sk, skb);

		l2cap_do_send(pi->chan, skb);

		err = len;

		break;
@@ -997,10 +1001,10 @@ void l2cap_sock_init(struct sock *sk, struct sock *parent) 
		pi->fcs  = l2cap_pi(parent)->fcs;

		pi->max_tx = l2cap_pi(parent)->max_tx;

		pi->tx_win = l2cap_pi(parent)->tx_win;

		pi->sec_level = l2cap_pi(parent)->sec_level;

		pi->role_switch = l2cap_pi(parent)->role_switch;

		pi->force_reliable = l2cap_pi(parent)->force_reliable;

		pi->flushable = l2cap_pi(parent)->flushable;

		chan->sec_level = pchan->sec_level;

		chan->role_switch = pchan->role_switch;

		chan->force_reliable = pchan->force_reliable;

		chan->flushable = pchan->flushable;

	} else {

		pi->imtu = L2CAP_DEFAULT_MTU;

		pi->omtu = 0;
@@ -1013,10 +1017,10 @@ void l2cap_sock_init(struct sock *sk, struct sock *parent) 
		pi->max_tx = L2CAP_DEFAULT_MAX_TX;

		pi->fcs  = L2CAP_FCS_CRC16;

		pi->tx_win = L2CAP_DEFAULT_TX_WINDOW;

		pi->sec_level = BT_SECURITY_LOW;

		pi->role_switch = 0;

		pi->force_reliable = 0;

		pi->flushable = BT_FLUSHABLE_OFF;

		chan->sec_level = BT_SECURITY_LOW;

		chan->role_switch = 0;

		chan->force_reliable = 0;

		chan->flushable = BT_FLUSHABLE_OFF;

	}



	/* Default config options */