Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-next-2.6

drivers/bluetooth/btmrvl_debugfs.c

@@ -29,7 +29,6 @@ struct btmrvl_debugfs_data {
 	struct dentry *root_dir, *config_dir, *status_dir;
 
 	/* config */
-	struct dentry *drvdbg;
 	struct dentry *psmode;
 	struct dentry *pscmd;
 	struct dentry *hsmode;

drivers/bluetooth/btmrvl_drv.h

@@ -131,6 +131,7 @@ void btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb);
 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb);
 
 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd);
+int btmrvl_enable_ps(struct btmrvl_private *priv);
 int btmrvl_prepare_command(struct btmrvl_private *priv);
 
 #ifdef CONFIG_DEBUG_FS

drivers/bluetooth/btmrvl_main.c

@@ -189,6 +189,38 @@ int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
 }
 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
 
+int btmrvl_enable_ps(struct btmrvl_private *priv)
+{
+	struct sk_buff *skb;
+	struct btmrvl_cmd *cmd;
+
+	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
+	if (skb == NULL) {
+		BT_ERR("No free skb");
+		return -ENOMEM;
+	}
+
+	cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
+	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
+					BT_CMD_AUTO_SLEEP_MODE));
+	cmd->length = 1;
+
+	if (priv->btmrvl_dev.psmode)
+		cmd->data[0] = BT_PS_ENABLE;
+	else
+		cmd->data[0] = BT_PS_DISABLE;
+
+	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
+
+	skb->dev = (void *) priv->btmrvl_dev.hcidev;
+	skb_queue_head(&priv->adapter->tx_queue, skb);
+
+	BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
+
 static int btmrvl_enable_hs(struct btmrvl_private *priv)
 {
 	struct sk_buff *skb;
@@ -258,28 +290,7 @@ int btmrvl_prepare_command(struct btmrvl_private *priv)
 
 	if (priv->btmrvl_dev.pscmd) {
 		priv->btmrvl_dev.pscmd = 0;
-
-		skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
-		if (skb == NULL) {
-			BT_ERR("No free skb");
-			return -ENOMEM;
-		}
-
-		cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
-		cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_AUTO_SLEEP_MODE));
-		cmd->length = 1;
-
-		if (priv->btmrvl_dev.psmode)
-			cmd->data[0] = BT_PS_ENABLE;
-		else
-			cmd->data[0] = BT_PS_DISABLE;
-
-		bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
-
-		skb->dev = (void *) priv->btmrvl_dev.hcidev;
-		skb_queue_head(&priv->adapter->tx_queue, skb);
-
-		BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
+		btmrvl_enable_ps(priv);
 	}
 
 	if (priv->btmrvl_dev.hscmd) {

drivers/bluetooth/btmrvl_sdio.c

@@ -930,6 +930,8 @@ static int btmrvl_sdio_probe(struct sdio_func *func,
 	priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
 
 	btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
+	priv->btmrvl_dev.psmode = 1;
+	btmrvl_enable_ps(priv);
 
 	return 0;
 
@@ -1001,3 +1003,5 @@ MODULE_AUTHOR("Marvell International Ltd.");
 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
 MODULE_VERSION(VERSION);
 MODULE_LICENSE("GPL v2");
+MODULE_FIRMWARE("sd8688_helper.bin");
+MODULE_FIRMWARE("sd8688.bin");

drivers/bluetooth/hci_vhci.c

@@ -41,8 +41,6 @@
 
 #define VERSION "1.3"
 
-static int minor = MISC_DYNAMIC_MINOR;
-
 struct vhci_data {
 	struct hci_dev *hdev;
 
@@ -218,12 +216,6 @@ static unsigned int vhci_poll(struct file *file, poll_table *wait)
 	return POLLOUT | POLLWRNORM;
 }
 
-static int vhci_ioctl(struct inode *inode, struct file *file,
-					unsigned int cmd, unsigned long arg)
-{
-	return -EINVAL;
-}
-
 static int vhci_open(struct inode *inode, struct file *file)
 {
 	struct vhci_data *data;
@@ -284,10 +276,10 @@ static int vhci_release(struct inode *inode, struct file *file)
 }
 
 static const struct file_operations vhci_fops = {
+	.owner		= THIS_MODULE,
 	.read		= vhci_read,
 	.write		= vhci_write,
 	.poll		= vhci_poll,
-	.ioctl		= vhci_ioctl,
 	.open		= vhci_open,
 	.release	= vhci_release,
 };
@@ -302,18 +294,12 @@ static int __init vhci_init(void)
 {
 	BT_INFO("Virtual HCI driver ver %s", VERSION);
 
-	if (misc_register(&vhci_miscdev) < 0) {
-		BT_ERR("Can't register misc device with minor %d", minor);
-		return -EIO;
-	}
-
-	return 0;
+	return misc_register(&vhci_miscdev);
 }
 
 static void __exit vhci_exit(void)
 {
-	if (misc_deregister(&vhci_miscdev) < 0)
-		BT_ERR("Can't unregister misc device with minor %d", minor);
+	misc_deregister(&vhci_miscdev);
 }
 
 module_init(vhci_init);

include/net/bluetooth/hci_core.h

@@ -367,22 +367,6 @@ static inline void hci_conn_put(struct hci_conn *conn)
 	}
 }
 
-/* ----- HCI tasks ----- */
-static inline void hci_sched_cmd(struct hci_dev *hdev)
-{
-	tasklet_schedule(&hdev->cmd_task);
-}
-
-static inline void hci_sched_rx(struct hci_dev *hdev)
-{
-	tasklet_schedule(&hdev->rx_task);
-}
-
-static inline void hci_sched_tx(struct hci_dev *hdev)
-{
-	tasklet_schedule(&hdev->tx_task);
-}
-
 /* ----- HCI Devices ----- */
 static inline void __hci_dev_put(struct hci_dev *d)
 {
@@ -437,28 +421,7 @@ int hci_inquiry(void __user *arg);
 
 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 
-/* Receive frame from HCI drivers */
-static inline int hci_recv_frame(struct sk_buff *skb)
-{
-	struct hci_dev *hdev = (struct hci_dev *) skb->dev;
-	if (!hdev || (!test_bit(HCI_UP, &hdev->flags) 
-			&& !test_bit(HCI_INIT, &hdev->flags))) {
-		kfree_skb(skb);
-		return -ENXIO;
-	}
-
-	/* Incomming skb */
-	bt_cb(skb)->incoming = 1;
-
-	/* Time stamp */
-	__net_timestamp(skb);
-
-	/* Queue frame for rx task */
-	skb_queue_tail(&hdev->rx_q, skb);
-	hci_sched_rx(hdev);
-	return 0;
-}
-
+int hci_recv_frame(struct sk_buff *skb);
 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 
 int hci_register_sysfs(struct hci_dev *hdev);

include/net/bluetooth/l2cap.h

@@ -324,7 +324,6 @@ struct l2cap_pinfo {
 
 	__u8		next_tx_seq;
 	__u8		expected_ack_seq;
-	__u8		req_seq;
 	__u8		expected_tx_seq;
 	__u8		buffer_seq;
 	__u8		buffer_seq_srej;
@@ -375,6 +374,7 @@ struct l2cap_pinfo {
 #define L2CAP_CONN_SEND_PBIT       0x10
 #define L2CAP_CONN_REMOTE_BUSY     0x20
 #define L2CAP_CONN_LOCAL_BUSY      0x40
+#define L2CAP_CONN_REJ_ACT         0x80
 
 #define __mod_retrans_timer() mod_timer(&l2cap_pi(sk)->retrans_timer, \
 		jiffies +  msecs_to_jiffies(L2CAP_DEFAULT_RETRANS_TO));

net/bluetooth/bnep/core.c

@@ -230,7 +230,6 @@ static int bnep_rx_control(struct bnep_session *s, void *data, int len)
 
 	switch (cmd) {
 	case BNEP_CMD_NOT_UNDERSTOOD:
-	case BNEP_SETUP_CONN_REQ:
 	case BNEP_SETUP_CONN_RSP:
 	case BNEP_FILTER_NET_TYPE_RSP:
 	case BNEP_FILTER_MULTI_ADDR_RSP:
@@ -245,6 +244,10 @@ static int bnep_rx_control(struct bnep_session *s, void *data, int len)
 		err = bnep_ctrl_set_mcfilter(s, data, len);
 		break;
 
+	case BNEP_SETUP_CONN_REQ:
+		err = bnep_send_rsp(s, BNEP_SETUP_CONN_RSP, BNEP_CONN_NOT_ALLOWED);
+		break;
+
 	default: {
 			u8 pkt[3];
 			pkt[0] = BNEP_CONTROL;

net/bluetooth/hci_core.c

@@ -193,8 +193,9 @@ static void hci_init_req(struct hci_dev *hdev, unsigned long opt)
 	while ((skb = skb_dequeue(&hdev->driver_init))) {
 		bt_cb(skb)->pkt_type = HCI_COMMAND_PKT;
 		skb->dev = (void *) hdev;
+
 		skb_queue_tail(&hdev->cmd_q, skb);
-		hci_sched_cmd(hdev);
+		tasklet_schedule(&hdev->cmd_task);
 	}
 	skb_queue_purge(&hdev->driver_init);
 
@@ -987,6 +988,30 @@ int hci_resume_dev(struct hci_dev *hdev)
 }
 EXPORT_SYMBOL(hci_resume_dev);
 
+/* Receive frame from HCI drivers */
+int hci_recv_frame(struct sk_buff *skb)
+{
+	struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+	if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
+				&& !test_bit(HCI_INIT, &hdev->flags))) {
+		kfree_skb(skb);
+		return -ENXIO;
+	}
+
+	/* Incomming skb */
+	bt_cb(skb)->incoming = 1;
+
+	/* Time stamp */
+	__net_timestamp(skb);
+
+	/* Queue frame for rx task */
+	skb_queue_tail(&hdev->rx_q, skb);
+	tasklet_schedule(&hdev->rx_task);
+
+	return 0;
+}
+EXPORT_SYMBOL(hci_recv_frame);
+
 /* Receive packet type fragment */
 #define __reassembly(hdev, type)  ((hdev)->reassembly[(type) - 2])
 
@@ -1193,8 +1218,9 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param)
 
 	bt_cb(skb)->pkt_type = HCI_COMMAND_PKT;
 	skb->dev = (void *) hdev;
+
 	skb_queue_tail(&hdev->cmd_q, skb);
-	hci_sched_cmd(hdev);
+	tasklet_schedule(&hdev->cmd_task);
 
 	return 0;
 }
@@ -1271,7 +1297,8 @@ int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags)
 		spin_unlock_bh(&conn->data_q.lock);
 	}
 
-	hci_sched_tx(hdev);
+	tasklet_schedule(&hdev->tx_task);
+
 	return 0;
 }
 EXPORT_SYMBOL(hci_send_acl);
@@ -1298,8 +1325,10 @@ int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb)
 
 	skb->dev = (void *) hdev;
 	bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
+
 	skb_queue_tail(&conn->data_q, skb);
-	hci_sched_tx(hdev);
+	tasklet_schedule(&hdev->tx_task);
+
 	return 0;
 }
 EXPORT_SYMBOL(hci_send_sco);
@@ -1612,7 +1641,7 @@ static void hci_cmd_task(unsigned long arg)
 			hdev->cmd_last_tx = jiffies;
 		} else {
 			skb_queue_head(&hdev->cmd_q, skb);
-			hci_sched_cmd(hdev);
+			tasklet_schedule(&hdev->cmd_task);
 		}
 	}
 }

net/bluetooth/hci_event.c

@@ -1320,7 +1320,7 @@ static inline void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *sk
 	if (ev->ncmd) {
 		atomic_set(&hdev->cmd_cnt, 1);
 		if (!skb_queue_empty(&hdev->cmd_q))
-			hci_sched_cmd(hdev);
+			tasklet_schedule(&hdev->cmd_task);
 	}
 }
 
@@ -1386,7 +1386,7 @@ static inline void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb)
 	if (ev->ncmd) {
 		atomic_set(&hdev->cmd_cnt, 1);
 		if (!skb_queue_empty(&hdev->cmd_q))
-			hci_sched_cmd(hdev);
+			tasklet_schedule(&hdev->cmd_task);
 	}
 }
 
@@ -1454,7 +1454,7 @@ static inline void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *s
 		}
 	}
 
-	hci_sched_tx(hdev);
+	tasklet_schedule(&hdev->tx_task);
 
 	tasklet_enable(&hdev->tx_task);
 }

net/bluetooth/hci_sock.c

@@ -414,6 +414,11 @@ static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
 		goto done;
 	}
 
+	if (!test_bit(HCI_UP, &hdev->flags)) {
+		err = -ENETDOWN;
+		goto done;
+	}
+
 	if (!(skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err)))
 		goto done;
 
@@ -440,10 +445,10 @@ static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
 
 		if (test_bit(HCI_RAW, &hdev->flags) || (ogf == 0x3f)) {
 			skb_queue_tail(&hdev->raw_q, skb);
-			hci_sched_tx(hdev);
+			tasklet_schedule(&hdev->tx_task);
 		} else {
 			skb_queue_tail(&hdev->cmd_q, skb);
-			hci_sched_cmd(hdev);
+			tasklet_schedule(&hdev->cmd_task);
 		}
 	} else {
 		if (!capable(CAP_NET_RAW)) {
@@ -452,7 +457,7 @@ static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
 		}
 
 		skb_queue_tail(&hdev->raw_q, skb);
-		hci_sched_tx(hdev);
+		tasklet_schedule(&hdev->tx_task);
 	}
 
 	err = len;

net/bluetooth/hidp/core.c

@@ -280,6 +280,13 @@ static int hidp_send_report(struct hidp_session *session, struct hid_report *rep
 	return hidp_queue_report(session, buf, rsize);
 }
 
+static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, size_t count)
+{
+	if (hidp_queue_report(hid->driver_data, data, count))
+		return -ENOMEM;
+	return count;
+}
+
 static void hidp_idle_timeout(unsigned long arg)
 {
 	struct hidp_session *session = (struct hidp_session *) arg;
@@ -785,6 +792,8 @@ static int hidp_setup_hid(struct hidp_session *session,
 	hid->dev.parent = hidp_get_device(session);
 	hid->ll_driver = &hidp_hid_driver;
 
+	hid->hid_output_raw_report = hidp_output_raw_report;
+
 	err = hid_add_device(hid);
 	if (err < 0)
 		goto failed;

net/bluetooth/l2cap.c

@@ -54,6 +54,7 @@
 #define VERSION "2.14"
 
 static int enable_ertm = 0;
+static int max_transmit = L2CAP_DEFAULT_MAX_TX;
 
 static u32 l2cap_feat_mask = L2CAP_FEAT_FIXED_CHAN;
 static u8 l2cap_fixed_chan[8] = { 0x02, };
@@ -373,6 +374,8 @@ static inline int l2cap_send_rr_or_rnr(struct l2cap_pinfo *pi, u16 control)
 	else
 		control |= L2CAP_SUPER_RCV_READY;
 
+	control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+
 	return l2cap_send_sframe(pi, control);
 }
 
@@ -1333,7 +1336,7 @@ static int l2cap_retransmit_frame(struct sock *sk, u8 tx_seq)
 		tx_skb = skb_clone(skb, GFP_ATOMIC);
 		bt_cb(skb)->retries++;
 		control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
-		control |= (pi->req_seq << L2CAP_CTRL_REQSEQ_SHIFT)
+		control |= (pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT)
 				| (tx_seq << L2CAP_CTRL_TXSEQ_SHIFT);
 		put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
 
@@ -1375,7 +1378,7 @@ static int l2cap_ertm_send(struct sock *sk)
 		bt_cb(skb)->retries++;
 
 		control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
-		control |= (pi->req_seq << L2CAP_CTRL_REQSEQ_SHIFT)
+		control |= (pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT)
 				| (pi->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT);
 		put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
 
@@ -2173,6 +2176,21 @@ static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val)
 	*ptr += L2CAP_CONF_OPT_SIZE + len;
 }
 
+static inline void l2cap_ertm_init(struct sock *sk)
+{
+	l2cap_pi(sk)->expected_ack_seq = 0;
+	l2cap_pi(sk)->unacked_frames = 0;
+	l2cap_pi(sk)->buffer_seq = 0;
+	l2cap_pi(sk)->num_to_ack = 0;
+
+	setup_timer(&l2cap_pi(sk)->retrans_timer,
+			l2cap_retrans_timeout, (unsigned long) sk);
+	setup_timer(&l2cap_pi(sk)->monitor_timer,
+			l2cap_monitor_timeout, (unsigned long) sk);
+
+	__skb_queue_head_init(SREJ_QUEUE(sk));
+}
+
 static int l2cap_mode_supported(__u8 mode, __u32 feat_mask)
 {
 	u32 local_feat_mask = l2cap_feat_mask;
@@ -2236,7 +2254,7 @@ static int l2cap_build_conf_req(struct sock *sk, void *data)
 	case L2CAP_MODE_ERTM:
 		rfc.mode            = L2CAP_MODE_ERTM;
 		rfc.txwin_size      = L2CAP_DEFAULT_TX_WINDOW;
-		rfc.max_transmit    = L2CAP_DEFAULT_MAX_TX;
+		rfc.max_transmit    = max_transmit;
 		rfc.retrans_timeout = 0;
 		rfc.monitor_timeout = 0;
 		rfc.max_pdu_size    = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);
@@ -2761,17 +2779,13 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr
 			l2cap_pi(sk)->fcs = L2CAP_FCS_CRC16;
 
 		sk->sk_state = BT_CONNECTED;
-		l2cap_pi(sk)->next_tx_seq = 0;
-		l2cap_pi(sk)->expected_ack_seq = 0;
-		l2cap_pi(sk)->unacked_frames = 0;
-
-		setup_timer(&l2cap_pi(sk)->retrans_timer,
-				l2cap_retrans_timeout, (unsigned long) sk);
-		setup_timer(&l2cap_pi(sk)->monitor_timer,
-				l2cap_monitor_timeout, (unsigned long) sk);
 
+		l2cap_pi(sk)->next_tx_seq = 0;
+		l2cap_pi(sk)->expected_tx_seq = 0;
 		__skb_queue_head_init(TX_QUEUE(sk));
-		__skb_queue_head_init(SREJ_QUEUE(sk));
+		if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM)
+			l2cap_ertm_init(sk);
+
 		l2cap_chan_ready(sk);
 		goto unlock;
 	}
@@ -2850,11 +2864,12 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr
 			l2cap_pi(sk)->fcs = L2CAP_FCS_CRC16;
 
 		sk->sk_state = BT_CONNECTED;
+		l2cap_pi(sk)->next_tx_seq = 0;
 		l2cap_pi(sk)->expected_tx_seq = 0;
-		l2cap_pi(sk)->buffer_seq = 0;
-		l2cap_pi(sk)->num_to_ack = 0;
 		__skb_queue_head_init(TX_QUEUE(sk));
-		__skb_queue_head_init(SREJ_QUEUE(sk));
+		if (l2cap_pi(sk)->mode ==  L2CAP_MODE_ERTM)
+			l2cap_ertm_init(sk);
+
 		l2cap_chan_ready(sk);
 	}
 
@@ -2886,9 +2901,12 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd
 	sk->sk_shutdown = SHUTDOWN_MASK;
 
 	skb_queue_purge(TX_QUEUE(sk));
-	skb_queue_purge(SREJ_QUEUE(sk));
-	del_timer(&l2cap_pi(sk)->retrans_timer);
-	del_timer(&l2cap_pi(sk)->monitor_timer);
+
+	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+		skb_queue_purge(SREJ_QUEUE(sk));
+		del_timer(&l2cap_pi(sk)->retrans_timer);
+		del_timer(&l2cap_pi(sk)->monitor_timer);
+	}
 
 	l2cap_chan_del(sk, ECONNRESET);
 	bh_unlock_sock(sk);
@@ -2913,9 +2931,12 @@ static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, struct l2cap_cmd
 		return 0;
 
 	skb_queue_purge(TX_QUEUE(sk));
-	skb_queue_purge(SREJ_QUEUE(sk));
-	del_timer(&l2cap_pi(sk)->retrans_timer);
-	del_timer(&l2cap_pi(sk)->monitor_timer);
+
+	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+		skb_queue_purge(SREJ_QUEUE(sk));
+		del_timer(&l2cap_pi(sk)->retrans_timer);
+		del_timer(&l2cap_pi(sk)->monitor_timer);
+	}
 
 	l2cap_chan_del(sk, 0);
 	bh_unlock_sock(sk);
@@ -3280,12 +3301,16 @@ static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, str
 {
 	struct l2cap_pinfo *pi = l2cap_pi(sk);
 	u8 tx_seq = __get_txseq(rx_control);
+	u8 req_seq = __get_reqseq(rx_control);
 	u16 tx_control = 0;
 	u8 sar = rx_control >> L2CAP_CTRL_SAR_SHIFT;
 	int err = 0;
 
 	BT_DBG("sk %p rx_control 0x%4.4x len %d", sk, rx_control, skb->len);
 
+	pi->expected_ack_seq = req_seq;
+	l2cap_drop_acked_frames(sk);
+
 	if (tx_seq == pi->expected_tx_seq)
 		goto expected;
 
@@ -3340,6 +3365,16 @@ static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, str
 		return 0;
 	}
 
+	if (rx_control & L2CAP_CTRL_FINAL) {
+		if (pi->conn_state & L2CAP_CONN_REJ_ACT)
+			pi->conn_state &= ~L2CAP_CONN_REJ_ACT;
+		else {
+			sk->sk_send_head = TX_QUEUE(sk)->next;
+			pi->next_tx_seq = pi->expected_ack_seq;
+			l2cap_ertm_send(sk);
+		}
+	}
+
 	pi->buffer_seq = (pi->buffer_seq + 1) % 64;
 
 	err = l2cap_sar_reassembly_sdu(sk, skb, rx_control);
@@ -3376,6 +3411,14 @@ static inline int l2cap_data_channel_sframe(struct sock *sk, u16 rx_control, str
 			pi->expected_ack_seq = tx_seq;
 			l2cap_drop_acked_frames(sk);
 
+			if (pi->conn_state & L2CAP_CONN_REJ_ACT)
+				pi->conn_state &= ~L2CAP_CONN_REJ_ACT;
+			else {
+				sk->sk_send_head = TX_QUEUE(sk)->next;
+				pi->next_tx_seq = pi->expected_ack_seq;
+				l2cap_ertm_send(sk);
+			}
+
 			if (!(pi->conn_state & L2CAP_CONN_WAIT_F))
 				break;
 
@@ -3403,10 +3446,24 @@ static inline int l2cap_data_channel_sframe(struct sock *sk, u16 rx_control, str
 		pi->expected_ack_seq = __get_reqseq(rx_control);
 		l2cap_drop_acked_frames(sk);
 
-		sk->sk_send_head = TX_QUEUE(sk)->next;
-		pi->next_tx_seq = pi->expected_ack_seq;
+		if (rx_control & L2CAP_CTRL_FINAL) {
+			if (pi->conn_state & L2CAP_CONN_REJ_ACT)
+				pi->conn_state &= ~L2CAP_CONN_REJ_ACT;
+			else {
+				sk->sk_send_head = TX_QUEUE(sk)->next;
+				pi->next_tx_seq = pi->expected_ack_seq;
+				l2cap_ertm_send(sk);
+			}
+		} else {
+			sk->sk_send_head = TX_QUEUE(sk)->next;
+			pi->next_tx_seq = pi->expected_ack_seq;
+			l2cap_ertm_send(sk);
 
-		l2cap_ertm_send(sk);
+			if (pi->conn_state & L2CAP_CONN_WAIT_F) {
+				pi->srej_save_reqseq = tx_seq;
+				pi->conn_state |= L2CAP_CONN_REJ_ACT;
+			}
+		}
 
 		break;
 
@@ -3425,7 +3482,7 @@ static inline int l2cap_data_channel_sframe(struct sock *sk, u16 rx_control, str
 		} else if (rx_control & L2CAP_CTRL_FINAL) {
 			if ((pi->conn_state & L2CAP_CONN_SREJ_ACT) &&
 					pi->srej_save_reqseq == tx_seq)
-				pi->srej_save_reqseq &= ~L2CAP_CONN_SREJ_ACT;
+				pi->conn_state &= ~L2CAP_CONN_SREJ_ACT;
 			else
 				l2cap_retransmit_frame(sk, tx_seq);
 		}
@@ -4004,6 +4061,9 @@ module_exit(l2cap_exit);
 module_param(enable_ertm, bool, 0644);
 MODULE_PARM_DESC(enable_ertm, "Enable enhanced retransmission mode");
 
+module_param(max_transmit, uint, 0644);
+MODULE_PARM_DESC(max_transmit, "Max transmit value (default = 3)");
+
 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 MODULE_DESCRIPTION("Bluetooth L2CAP ver " VERSION);
 MODULE_VERSION(VERSION);

net/bluetooth/rfcomm/core.c

@@ -51,6 +51,7 @@
 static int disable_cfc = 0;
 static int channel_mtu = -1;
 static unsigned int l2cap_mtu = RFCOMM_MAX_L2CAP_MTU;
+static int l2cap_ertm = 0;
 
 static struct task_struct *rfcomm_thread;
 
@@ -702,6 +703,8 @@ static struct rfcomm_session *rfcomm_session_create(bdaddr_t *src, bdaddr_t *dst
 	sk = sock->sk;
 	lock_sock(sk);
 	l2cap_pi(sk)->imtu = l2cap_mtu;
+	if (l2cap_ertm)
+		l2cap_pi(sk)->mode = L2CAP_MODE_ERTM;
 	release_sock(sk);
 
 	s = rfcomm_session_add(sock, BT_BOUND);
@@ -2185,6 +2188,9 @@ MODULE_PARM_DESC(channel_mtu, "Default MTU for the RFCOMM channel");
 module_param(l2cap_mtu, uint, 0644);
 MODULE_PARM_DESC(l2cap_mtu, "Default MTU for the L2CAP connection");
 
+module_param(l2cap_ertm, bool, 0644);
+MODULE_PARM_DESC(l2cap_ertm, "Use L2CAP ERTM mode for connection");
+
 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 MODULE_DESCRIPTION("Bluetooth RFCOMM ver " VERSION);
 MODULE_VERSION(VERSION);