Merge tag 'nfc-next-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-3.0

This is the first NFC pull request for 3.8

With this one we have:

- pn544 p2p support.
- pn544 physical and HCI layers separation. We are getting the pn544 driver
  ready to support non i2c physical layers.
- LLCP SNL (Service Name Lookup). This is the NFC p2p service discovery
  protocol.
- LLCP datagram sockets (connection less) support.
- IDR library usage for NFC devices indexes assignement.
- NFC netlink extension for setting and getting LLCP link characteristics.
- Various code style fixes and cleanups spread over the pn533, LLCP, HCI and
  pn544 code.

drivers/nfc/Makefile

@@ -2,7 +2,7 @@
 # Makefile for nfc devices
 #
 
-obj-$(CONFIG_PN544_HCI_NFC)	+= pn544_hci.o
+obj-$(CONFIG_PN544_HCI_NFC)	+= pn544/
 obj-$(CONFIG_NFC_PN533)		+= pn533.o
 obj-$(CONFIG_NFC_WILINK)	+= nfcwilink.o
 

drivers/nfc/pn533.c

@@ -84,6 +84,10 @@ MODULE_DEVICE_TABLE(usb, pn533_table);
 #define PN533_LISTEN_TIME 2
 
 /* frame definitions */
+#define PN533_NORMAL_FRAME_MAX_LEN 262  /* 6   (PREAMBLE, SOF, LEN, LCS, TFI)
+					   254 (DATA)
+					   2   (DCS, postamble) */
+
 #define PN533_FRAME_TAIL_SIZE 2
 #define PN533_FRAME_SIZE(f) (sizeof(struct pn533_frame) + f->datalen + \
 				PN533_FRAME_TAIL_SIZE)
@@ -1165,8 +1169,7 @@ static void pn533_poll_create_mod_list(struct pn533 *dev,
 		pn533_poll_add_mod(dev, PN533_LISTEN_MOD);
 }
 
-static int pn533_start_poll_complete(struct pn533 *dev, void *arg,
-				     u8 *params, int params_len)
+static int pn533_start_poll_complete(struct pn533 *dev, u8 *params, int params_len)
 {
 	struct pn533_poll_response *resp;
 	int rc;
@@ -1304,8 +1307,7 @@ static void pn533_wq_tg_get_data(struct work_struct *work)
 }
 
 #define ATR_REQ_GB_OFFSET 17
-static int pn533_init_target_complete(struct pn533 *dev, void *arg,
-				      u8 *params, int params_len)
+static int pn533_init_target_complete(struct pn533 *dev, u8 *params, int params_len)
 {
 	struct pn533_cmd_init_target_response *resp;
 	u8 frame, comm_mode = NFC_COMM_PASSIVE, *gb;
@@ -1402,9 +1404,9 @@ static int pn533_poll_complete(struct pn533 *dev, void *arg,
 	if (cur_mod->len == 0) {
 		del_timer(&dev->listen_timer);
 
-		return pn533_init_target_complete(dev, arg, params, params_len);
+		return pn533_init_target_complete(dev, params, params_len);
 	} else {
-		rc = pn533_start_poll_complete(dev, arg, params, params_len);
+		rc = pn533_start_poll_complete(dev, params, params_len);
 		if (!rc)
 			return rc;
 	}
@@ -2373,9 +2375,9 @@ static int pn533_probe(struct usb_interface *interface,
 		goto error;
 	}
 
-	dev->in_frame = kmalloc(dev->in_maxlen, GFP_KERNEL);
+	dev->in_frame = kmalloc(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL);
 	dev->in_urb = usb_alloc_urb(0, GFP_KERNEL);
-	dev->out_frame = kmalloc(dev->out_maxlen, GFP_KERNEL);
+	dev->out_frame = kmalloc(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL);
 	dev->out_urb = usb_alloc_urb(0, GFP_KERNEL);
 
 	if (!dev->in_frame || !dev->out_frame ||

drivers/nfc/pn544/Makefile

+#
+# Makefile for PN544 HCI based NFC driver
+#
+
+obj-$(CONFIG_PN544_HCI_NFC)	+= pn544_i2c.o
+
+pn544_i2c-y		:= pn544.o i2c.o

drivers/nfc/pn544/pn544.h

+/*
+ * Copyright (C) 2011 - 2012  Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __LOCAL_PN544_H_
+#define __LOCAL_PN544_H_
+
+#include <net/nfc/hci.h>
+
+#define DRIVER_DESC "HCI NFC driver for PN544"
+
+int pn544_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops, char *llc_name,
+		    int phy_headroom, int phy_tailroom, int phy_payload,
+		    struct nfc_hci_dev **hdev);
+void pn544_hci_remove(struct nfc_hci_dev *hdev);
+
+#endif /* __LOCAL_PN544_H_ */

include/net/nfc/hci.h

@@ -24,6 +24,12 @@
 
 #include <net/nfc/nfc.h>
 
+struct nfc_phy_ops {
+	int (*write)(void *dev_id, struct sk_buff *skb);
+	int (*enable)(void *dev_id);
+	void (*disable)(void *dev_id);
+};
+
 struct nfc_hci_dev;
 
 struct nfc_hci_ops {
@@ -38,15 +44,21 @@ struct nfc_hci_ops {
 	int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
 	int (*start_poll) (struct nfc_hci_dev *hdev,
 			   u32 im_protocols, u32 tm_protocols);
+	int (*dep_link_up)(struct nfc_hci_dev *hdev, struct nfc_target *target,
+			   u8 comm_mode, u8 *gb, size_t gb_len);
+	int (*dep_link_down)(struct nfc_hci_dev *hdev);
 	int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate,
 				 struct nfc_target *target);
 	int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate,
 					   struct nfc_target *target);
-	int (*data_exchange) (struct nfc_hci_dev *hdev,
+	int (*im_transceive) (struct nfc_hci_dev *hdev,
 			      struct nfc_target *target, struct sk_buff *skb,
 			      data_exchange_cb_t cb, void *cb_context);
+	int (*tm_send)(struct nfc_hci_dev *hdev, struct sk_buff *skb);
 	int (*check_presence)(struct nfc_hci_dev *hdev,
 			      struct nfc_target *target);
+	void (*event_received)(struct nfc_hci_dev *hdev, u8 gate, u8 event,
+				struct sk_buff *skb);
 };
 
 /* Pipes */
@@ -114,6 +126,9 @@ struct nfc_hci_dev {
 	int async_cb_type;
 	data_exchange_cb_t async_cb;
 	void *async_cb_context;
+
+	u8 *gb;
+	size_t gb_len;
 };
 
 /* hci device allocation */
@@ -219,5 +234,6 @@ int nfc_hci_send_response(struct nfc_hci_dev *hdev, u8 gate, u8 response,
 			  const u8 *param, size_t param_len);
 int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event,
 		       const u8 *param, size_t param_len);
+int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate);
 
 #endif /* __NET_HCI_H */

include/net/nfc/nfc.h

@@ -95,7 +95,7 @@ struct nfc_genl_data {
 };
 
 struct nfc_dev {
-	unsigned int idx;
+	int idx;
 	u32 target_next_idx;
 	struct nfc_target *targets;
 	int n_targets;

include/uapi/linux/nfc.h

@@ -60,6 +60,13 @@
  *      target mode.
  * @NFC_EVENT_DEVICE_DEACTIVATED: event emitted when the adapter is deactivated
  *      from target mode.
+ * @NFC_CMD_LLC_GET_PARAMS: request LTO, RW, and MIUX parameters for a device
+ * @NFC_CMD_LLC_SET_PARAMS: set one or more of LTO, RW, and MIUX parameters for
+ *	a device. LTO must be set before the link is up otherwise -EINPROGRESS
+ *	is returned. RW and MIUX can be set at anytime and will be passed in
+ *	subsequent CONNECT and CC messages.
+ *	If one of the passed parameters is wrong none is set and -EINVAL is
+ *	returned.
  */
 enum nfc_commands {
 	NFC_CMD_UNSPEC,
@@ -77,6 +84,8 @@ enum nfc_commands {
 	NFC_EVENT_TARGET_LOST,
 	NFC_EVENT_TM_ACTIVATED,
 	NFC_EVENT_TM_DEACTIVATED,
+	NFC_CMD_LLC_GET_PARAMS,
+	NFC_CMD_LLC_SET_PARAMS,
 /* private: internal use only */
 	__NFC_CMD_AFTER_LAST
 };
@@ -102,6 +111,9 @@ enum nfc_commands {
  * @NFC_ATTR_RF_MODE: Initiator or target
  * @NFC_ATTR_IM_PROTOCOLS: Initiator mode protocols to poll for
  * @NFC_ATTR_TM_PROTOCOLS: Target mode protocols to listen for
+ * @NFC_ATTR_LLC_PARAM_LTO: Link TimeOut parameter
+ * @NFC_ATTR_LLC_PARAM_RW: Receive Window size parameter
+ * @NFC_ATTR_LLC_PARAM_MIUX: MIU eXtension parameter
  */
 enum nfc_attrs {
 	NFC_ATTR_UNSPEC,
@@ -119,6 +131,9 @@ enum nfc_attrs {
 	NFC_ATTR_DEVICE_POWERED,
 	NFC_ATTR_IM_PROTOCOLS,
 	NFC_ATTR_TM_PROTOCOLS,
+	NFC_ATTR_LLC_PARAM_LTO,
+	NFC_ATTR_LLC_PARAM_RW,
+	NFC_ATTR_LLC_PARAM_MIUX,
 /* private: internal use only */
 	__NFC_ATTR_AFTER_LAST
 };

net/nfc/Kconfig

@@ -3,8 +3,8 @@
 #
 
 menuconfig NFC
-	depends on NET && EXPERIMENTAL
-	tristate "NFC subsystem support (EXPERIMENTAL)"
+	depends on NET
+	tristate "NFC subsystem support"
 	default n
 	help
 	  Say Y here if you want to build support for NFC (Near field

net/nfc/core.c

@@ -40,6 +40,9 @@
 int nfc_devlist_generation;
 DEFINE_MUTEX(nfc_devlist_mutex);
 
+/* NFC device ID bitmap */
+static DEFINE_IDA(nfc_index_ida);
+
 /**
  * nfc_dev_up - turn on the NFC device
  *
@@ -181,6 +184,7 @@ int nfc_stop_poll(struct nfc_dev *dev)
 
 	dev->ops->stop_poll(dev);
 	dev->polling = false;
+	dev->rf_mode = NFC_RF_NONE;
 
 error:
 	device_unlock(&dev->dev);
@@ -194,7 +198,7 @@ static struct nfc_target *nfc_find_target(struct nfc_dev *dev, u32 target_idx)
 	if (dev->n_targets == 0)
 		return NULL;
 
-	for (i = 0; i < dev->n_targets ; i++) {
+	for (i = 0; i < dev->n_targets; i++) {
 		if (dev->targets[i].idx == target_idx)
 			return &dev->targets[i];
 	}
@@ -274,12 +278,14 @@ int nfc_dep_link_down(struct nfc_dev *dev)
 	if (!rc) {
 		dev->dep_link_up = false;
 		dev->active_target = NULL;
+		dev->rf_mode = NFC_RF_NONE;
 		nfc_llcp_mac_is_down(dev);
 		nfc_genl_dep_link_down_event(dev);
 	}
 
 error:
 	device_unlock(&dev->dev);
+
 	return rc;
 }
 
@@ -503,6 +509,7 @@ EXPORT_SYMBOL(nfc_tm_activated);
 int nfc_tm_deactivated(struct nfc_dev *dev)
 {
 	dev->dep_link_up = false;
+	dev->rf_mode = NFC_RF_NONE;
 
 	return nfc_genl_tm_deactivated(dev);
 }
@@ -697,6 +704,8 @@ static void nfc_check_pres_work(struct work_struct *work)
 
 	if (dev->active_target && timer_pending(&dev->check_pres_timer) == 0) {
 		rc = dev->ops->check_presence(dev, dev->active_target);
+		if (rc == -EOPNOTSUPP)
+			goto exit;
 		if (!rc) {
 			mod_timer(&dev->check_pres_timer, jiffies +
 				  msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS));
@@ -708,6 +717,7 @@ static void nfc_check_pres_work(struct work_struct *work)
 		}
 	}
 
+exit:
 	device_unlock(&dev->dev);
 }
 
@@ -753,7 +763,6 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
 				    u32 supported_protocols,
 				    int tx_headroom, int tx_tailroom)
 {
-	static atomic_t dev_no = ATOMIC_INIT(0);
 	struct nfc_dev *dev;
 
 	if (!ops->start_poll || !ops->stop_poll || !ops->activate_target ||
@@ -767,11 +776,6 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
 	if (!dev)
 		return NULL;
 
-	dev->dev.class = &nfc_class;
-	dev->idx = atomic_inc_return(&dev_no) - 1;
-	dev_set_name(&dev->dev, "nfc%d", dev->idx);
-	device_initialize(&dev->dev);
-
 	dev->ops = ops;
 	dev->supported_protocols = supported_protocols;
 	dev->tx_headroom = tx_headroom;
@@ -779,6 +783,7 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
 
 	nfc_genl_data_init(&dev->genl_data);
 
+	dev->rf_mode = NFC_RF_NONE;
 
 	/* first generation must not be 0 */
 	dev->targets_generation = 1;
@@ -806,6 +811,14 @@ int nfc_register_device(struct nfc_dev *dev)
 
 	pr_debug("dev_name=%s\n", dev_name(&dev->dev));
 
+	dev->idx = ida_simple_get(&nfc_index_ida, 0, 0, GFP_KERNEL);
+	if (dev->idx < 0)
+		return dev->idx;
+
+	dev->dev.class = &nfc_class;
+	dev_set_name(&dev->dev, "nfc%d", dev->idx);
+	device_initialize(&dev->dev);
+
 	mutex_lock(&nfc_devlist_mutex);
 	nfc_devlist_generation++;
 	rc = device_add(&dev->dev);
@@ -834,10 +847,12 @@ EXPORT_SYMBOL(nfc_register_device);
  */
 void nfc_unregister_device(struct nfc_dev *dev)
 {
-	int rc;
+	int rc, id;
 
 	pr_debug("dev_name=%s\n", dev_name(&dev->dev));
 
+	id = dev->idx;
+
 	mutex_lock(&nfc_devlist_mutex);
 	nfc_devlist_generation++;
 
@@ -856,6 +871,8 @@ void nfc_unregister_device(struct nfc_dev *dev)
 		pr_debug("The userspace won't be notified that the device %s was removed\n",
 			 dev_name(&dev->dev));
 
+	ida_simple_remove(&nfc_index_ida, id);
+
 }
 EXPORT_SYMBOL(nfc_unregister_device);
 

net/nfc/hci/command.c

@@ -257,16 +257,16 @@ static u8 nfc_hci_create_pipe(struct nfc_hci_dev *hdev, u8 dest_host,
 	*result = nfc_hci_execute_cmd(hdev, NFC_HCI_ADMIN_PIPE,
 				      NFC_HCI_ADM_CREATE_PIPE,
 				      (u8 *) &params, sizeof(params), &skb);
-	if (*result == 0) {
-		resp = (struct hci_create_pipe_resp *)skb->data;
-		pipe = resp->pipe;
-		kfree_skb(skb);
+	if (*result < 0)
+		return NFC_HCI_INVALID_PIPE;
 
-		pr_debug("pipe created=%d\n", pipe);
+	resp = (struct hci_create_pipe_resp *)skb->data;
+	pipe = resp->pipe;
+	kfree_skb(skb);
 
-		return pipe;
-	} else
-		return NFC_HCI_INVALID_PIPE;
+	pr_debug("pipe created=%d\n", pipe);
+
+	return pipe;
 }
 
 static int nfc_hci_delete_pipe(struct nfc_hci_dev *hdev, u8 pipe)
@@ -279,8 +279,6 @@ static int nfc_hci_delete_pipe(struct nfc_hci_dev *hdev, u8 pipe)
 
 static int nfc_hci_clear_all_pipes(struct nfc_hci_dev *hdev)
 {
-	int r;
-
 	u8 param[2];
 
 	/* TODO: Find out what the identity reference data is
@@ -288,10 +286,8 @@ static int nfc_hci_clear_all_pipes(struct nfc_hci_dev *hdev)
 
 	pr_debug("\n");
 
-	r = nfc_hci_execute_cmd(hdev, NFC_HCI_ADMIN_PIPE,
-				NFC_HCI_ADM_CLEAR_ALL_PIPE, param, 2, NULL);
-
-	return 0;
+	return nfc_hci_execute_cmd(hdev, NFC_HCI_ADMIN_PIPE,
+				   NFC_HCI_ADM_CLEAR_ALL_PIPE, param, 2, NULL);
 }
 
 int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate)

net/nfc/hci/core.c

@@ -65,8 +65,9 @@ static void nfc_hci_msg_tx_work(struct work_struct *work)
 							  -ETIME);
 			kfree(hdev->cmd_pending_msg);
 			hdev->cmd_pending_msg = NULL;
-		} else
+		} else {
 			goto exit;
+		}
 	}
 
 next_msg:
@@ -182,7 +183,7 @@ static u32 nfc_hci_sak_to_protocol(u8 sak)
 	}
 }
 
-static int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
+int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
 {
 	struct nfc_target *targets;
 	struct sk_buff *atqa_skb = NULL;
@@ -263,7 +264,9 @@ static int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
 		break;
 	}
 
-	targets->hci_reader_gate = gate;
+	/* if driver set the new gate, we will skip the old one */
+	if (targets->hci_reader_gate == 0x00)
+		targets->hci_reader_gate = gate;
 
 	r = nfc_targets_found(hdev->ndev, targets, 1);
 
@@ -275,6 +278,7 @@ static int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
 
 	return r;
 }
+EXPORT_SYMBOL(nfc_hci_target_discovered);
 
 void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
 			    struct sk_buff *skb)
@@ -307,8 +311,13 @@ void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
 					      nfc_hci_pipe2gate(hdev, pipe));
 		break;
 	default:
-		/* TODO: Unknown events are hardware specific
-		 * pass them to the driver (needs a new hci_ops) */
+		if (hdev->ops->event_received) {
+			hdev->ops->event_received(hdev,
+						nfc_hci_pipe2gate(hdev, pipe),
+						event, skb);
+			return;
+		}
+
 		break;
 	}
 
@@ -527,7 +536,8 @@ static int hci_start_poll(struct nfc_dev *nfc_dev,
 		return hdev->ops->start_poll(hdev, im_protocols, tm_protocols);
 	else
 		return nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
-				       NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
+					  NFC_HCI_EVT_READER_REQUESTED,
+					  NULL, 0);
 }
 
 static void hci_stop_poll(struct nfc_dev *nfc_dev)
@@ -538,6 +548,28 @@ static void hci_stop_poll(struct nfc_dev *nfc_dev)
 			   NFC_HCI_EVT_END_OPERATION, NULL, 0);
 }
 
+static int hci_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
+				__u8 comm_mode, __u8 *gb, size_t gb_len)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	if (hdev->ops->dep_link_up)
+		return hdev->ops->dep_link_up(hdev, target, comm_mode,
+						gb, gb_len);
+
+	return 0;
+}
+
+static int hci_dep_link_down(struct nfc_dev *nfc_dev)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	if (hdev->ops->dep_link_down)
+		return hdev->ops->dep_link_down(hdev);
+
+	return 0;
+}
+
 static int hci_activate_target(struct nfc_dev *nfc_dev,
 			       struct nfc_target *target, u32 protocol)
 {
@@ -586,8 +618,8 @@ static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
 	switch (target->hci_reader_gate) {
 	case NFC_HCI_RF_READER_A_GATE:
 	case NFC_HCI_RF_READER_B_GATE:
-		if (hdev->ops->data_exchange) {
-			r = hdev->ops->data_exchange(hdev, target, skb, cb,
+		if (hdev->ops->im_transceive) {
+			r = hdev->ops->im_transceive(hdev, target, skb, cb,
 						     cb_context);
 			if (r <= 0)	/* handled */
 				break;
@@ -604,14 +636,14 @@ static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
 					   skb->len, hci_transceive_cb, hdev);
 		break;
 	default:
-		if (hdev->ops->data_exchange) {
-			r = hdev->ops->data_exchange(hdev, target, skb, cb,
+		if (hdev->ops->im_transceive) {
+			r = hdev->ops->im_transceive(hdev, target, skb, cb,
 						     cb_context);
 			if (r == 1)
 				r = -ENOTSUPP;
-		}
-		else
+		} else {
 			r = -ENOTSUPP;
+		}
 		break;
 	}
 
@@ -620,6 +652,16 @@ static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
 	return r;
 }
 
+static int hci_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	if (hdev->ops->tm_send)
+		return hdev->ops->tm_send(hdev, skb);
+	else
+		return -ENOTSUPP;
+}
+
 static int hci_check_presence(struct nfc_dev *nfc_dev,
 			      struct nfc_target *target)
 {
@@ -723,9 +765,12 @@ static struct nfc_ops hci_nfc_ops = {
 	.dev_down = hci_dev_down,
 	.start_poll = hci_start_poll,
 	.stop_poll = hci_stop_poll,
+	.dep_link_up = hci_dep_link_up,
+	.dep_link_down = hci_dep_link_down,
 	.activate_target = hci_activate_target,
 	.deactivate_target = hci_deactivate_target,
 	.im_transceive = hci_transceive,
+	.tm_send = hci_tm_send,
 	.check_presence = hci_check_presence,
 };
 
@@ -848,7 +893,7 @@ void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err)
 }
 EXPORT_SYMBOL(nfc_hci_driver_failure);
 
-void inline nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb)
+void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb)
 {
 	nfc_llc_rcv_from_drv(hdev->llc, skb);
 }

net/nfc/hci/llc.c

@@ -72,7 +72,7 @@ int nfc_llc_register(const char *name, struct nfc_llc_ops *ops)
 	llc_engine->ops = ops;
 
 	INIT_LIST_HEAD(&llc_engine->entry);
-	list_add_tail (&llc_engine->entry, &llc_engines);
+	list_add_tail(&llc_engine->entry, &llc_engines);
 
 	return 0;
 }

net/nfc/hci/llc_shdlc.c

@@ -634,9 +634,9 @@ static void llc_shdlc_sm_work(struct work_struct *work)
 			r = llc_shdlc_connect_initiate(shdlc);
 		else
 			r = -ETIME;
-		if (r < 0)
+		if (r < 0) {
 			llc_shdlc_connect_complete(shdlc, r);
-		else {
+		} else {
 			mod_timer(&shdlc->connect_timer, jiffies +
 				  msecs_to_jiffies(SHDLC_CONNECT_VALUE_MS));
 
@@ -682,9 +682,8 @@ static void llc_shdlc_sm_work(struct work_struct *work)
 			llc_shdlc_handle_send_queue(shdlc);
 		}
 
-		if (shdlc->hard_fault) {
+		if (shdlc->hard_fault)
 			shdlc->llc_failure(shdlc->hdev, shdlc->hard_fault);
-		}
 		break;
 	default:
 		break;

net/nfc/llcp/Kconfig

 config NFC_LLCP
-       depends on NFC && EXPERIMENTAL
-       bool "NFC LLCP support (EXPERIMENTAL)"
+       depends on NFC
+       bool "NFC LLCP support"
        default n
        help
 	 Say Y here if you want to build support for a kernel NFC LLCP

net/nfc/llcp/commands.c

@@ -261,7 +261,6 @@ int nfc_llcp_disconnect(struct nfc_llcp_sock *sock)
 	struct sk_buff *skb;
 	struct nfc_dev *dev;
 	struct nfc_llcp_local *local;
-	u16 size = 0;
 
 	pr_debug("Sending DISC\n");
 
@@ -273,17 +272,10 @@ int nfc_llcp_disconnect(struct nfc_llcp_sock *sock)
 	if (dev == NULL)
 		return -ENODEV;
 
-	size += LLCP_HEADER_SIZE;
-	size += dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE;
-
-	skb = alloc_skb(size, GFP_ATOMIC);
+	skb = llcp_allocate_pdu(sock, LLCP_PDU_DISC, 0);
 	if (skb == NULL)
 		return -ENOMEM;
 
-	skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE);
-
-	skb = llcp_add_header(skb, sock->dsap, sock->ssap, LLCP_PDU_DISC);
-
 	skb_queue_tail(&local->tx_queue, skb);
 
 	return 0;
@@ -324,8 +316,7 @@ int nfc_llcp_send_connect(struct nfc_llcp_sock *sock)
 	struct sk_buff *skb;
 	u8 *service_name_tlv = NULL, service_name_tlv_length;
 	u8 *miux_tlv = NULL, miux_tlv_length;
-	u8 *rw_tlv = NULL, rw_tlv_length, rw;
-	__be16 miux;
+	u8 *rw_tlv = NULL, rw_tlv_length;
 	int err;
 	u16 size = 0;
 
@@ -343,13 +334,11 @@ int nfc_llcp_send_connect(struct nfc_llcp_sock *sock)
 		size += service_name_tlv_length;
 	}
 
-	miux = cpu_to_be16(LLCP_MAX_MIUX);
-	miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&miux, 0,
+	miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&local->miux, 0,
 				      &miux_tlv_length);
 	size += miux_tlv_length;
 
-	rw = LLCP_MAX_RW;
-	rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &rw, 0, &rw_tlv_length);
+	rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &local->rw, 0, &rw_tlv_length);
 	size += rw_tlv_length;
 
 	pr_debug("SKB size %d SN length %zu\n", size, sock->service_name_len);
@@ -386,8 +375,7 @@ int nfc_llcp_send_cc(struct nfc_llcp_sock *sock)
 	struct nfc_llcp_local *local;
 	struct sk_buff *skb;
 	u8 *miux_tlv = NULL, miux_tlv_length;
-	u8 *rw_tlv = NULL, rw_tlv_length, rw;
-	__be16 miux;
+	u8 *rw_tlv = NULL, rw_tlv_length;
 	int err;
 	u16 size = 0;
 
@@ -397,13 +385,11 @@ int nfc_llcp_send_cc(struct nfc_llcp_sock *sock)
 	if (local == NULL)
 		return -ENODEV;
 
-	miux = cpu_to_be16(LLCP_MAX_MIUX);
-	miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&miux, 0,
+	miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&local->miux, 0,
 				      &miux_tlv_length);
 	size += miux_tlv_length;
 
-	rw = LLCP_MAX_RW;
-	rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &rw, 0, &rw_tlv_length);
+	rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &local->rw, 0, &rw_tlv_length);
 	size += rw_tlv_length;
 
 	skb = llcp_allocate_pdu(sock, LLCP_PDU_CC, size);
@@ -428,6 +414,52 @@ int nfc_llcp_send_cc(struct nfc_llcp_sock *sock)
 	return err;
 }
 
+int nfc_llcp_send_snl(struct nfc_llcp_local *local, u8 tid, u8 sap)
+{
+	struct sk_buff *skb;
+	struct nfc_dev *dev;
+	u8 *sdres_tlv = NULL, sdres_tlv_length, sdres[2];
+	u16 size = 0;
+
+	pr_debug("Sending SNL tid 0x%x sap 0x%x\n", tid, sap);
+
+	if (local == NULL)
+		return -ENODEV;
+
+	dev = local->dev;
+	if (dev == NULL)
+		return -ENODEV;
+
+	sdres[0] = tid;
+	sdres[1] = sap;
+	sdres_tlv = nfc_llcp_build_tlv(LLCP_TLV_SDRES, sdres, 0,
+				       &sdres_tlv_length);
+	if (sdres_tlv == NULL)
+		return -ENOMEM;
+
+	size += LLCP_HEADER_SIZE;
+	size += dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE;
+	size += sdres_tlv_length;
+
+	skb = alloc_skb(size, GFP_KERNEL);
+	if (skb == NULL) {
+		kfree(sdres_tlv);
+		return -ENOMEM;
+	}
+
+	skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE);
+
+	skb = llcp_add_header(skb, LLCP_SAP_SDP, LLCP_SAP_SDP, LLCP_PDU_SNL);
+
+	memcpy(skb_put(skb, sdres_tlv_length), sdres_tlv, sdres_tlv_length);
+
+	skb_queue_tail(&local->tx_queue, skb);
+
+	kfree(sdres_tlv);
+
+	return 0;
+}
+
 int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason)
 {
 	struct sk_buff *skb;
@@ -541,6 +573,52 @@ int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
 	return len;
 }
 
+int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
+			   struct msghdr *msg, size_t len)
+{
+	struct sk_buff *pdu;
+	struct nfc_llcp_local *local;
+	size_t frag_len = 0, remaining_len;
+	u8 *msg_ptr;
+	int err;
+
+	pr_debug("Send UI frame len %zd\n", len);
+
+	local = sock->local;
+	if (local == NULL)
+		return -ENODEV;
+
+	remaining_len = len;
+	msg_ptr = (u8 *) msg->msg_iov;
+
+	while (remaining_len > 0) {
+
+		frag_len = min_t(size_t, sock->miu, remaining_len);
+
+		pr_debug("Fragment %zd bytes remaining %zd",
+			 frag_len, remaining_len);
+
+		pdu = nfc_alloc_send_skb(sock->dev, &sock->sk, MSG_DONTWAIT,
+					 frag_len + LLCP_HEADER_SIZE, &err);
+		if (pdu == NULL) {
+			pr_err("Could not allocate PDU\n");
+			continue;
+		}
+
+		pdu = llcp_add_header(pdu, dsap, ssap, LLCP_PDU_UI);
+
+		memcpy(skb_put(pdu, frag_len), msg_ptr, frag_len);
+
+		/* No need to check for the peer RW for UI frames */
+		skb_queue_tail(&local->tx_queue, pdu);
+
+		remaining_len -= frag_len;
+		msg_ptr += frag_len;
+	}
+
+	return len;
+}
+
 int nfc_llcp_send_rr(struct nfc_llcp_sock *sock)
 {
 	struct sk_buff *skb;

net/nfc/llcp/llcp.h

@@ -64,6 +64,9 @@ struct nfc_llcp_local {
 	u32 target_idx;
 	u8 rf_mode;
 	u8 comm_mode;
+	u8 lto;
+	u8 rw;
+	__be16 miux;
 	unsigned long local_wks;      /* Well known services */
 	unsigned long local_sdp;      /* Local services  */
 	unsigned long local_sap; /* Local SAPs, not available for discovery */
@@ -124,6 +127,13 @@ struct nfc_llcp_sock {
 	struct sock *parent;
 };
 
+struct nfc_llcp_ui_cb {
+	__u8 dsap;
+	__u8 ssap;
+};
+
+#define nfc_llcp_ui_skb_cb(__skb) ((struct nfc_llcp_ui_cb *)&((__skb)->cb[0]))
+
 #define nfc_llcp_sock(sk) ((struct nfc_llcp_sock *) (sk))
 #define nfc_llcp_dev(sk)  (nfc_llcp_sock((sk))->dev)
 
@@ -209,10 +219,13 @@ int nfc_llcp_disconnect(struct nfc_llcp_sock *sock);
 int nfc_llcp_send_symm(struct nfc_dev *dev);
 int nfc_llcp_send_connect(struct nfc_llcp_sock *sock);
 int nfc_llcp_send_cc(struct nfc_llcp_sock *sock);
+int nfc_llcp_send_snl(struct nfc_llcp_local *local, u8 tid, u8 sap);
 int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason);
 int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock);
 int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
 			  struct msghdr *msg, size_t len);
+int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
+			   struct msghdr *msg, size_t len);
 int nfc_llcp_send_rr(struct nfc_llcp_sock *sock);
 
 /* Socket API */

net/nfc/llcp/sock.c

@@ -205,8 +205,8 @@ static int llcp_sock_listen(struct socket *sock, int backlog)
 
 	lock_sock(sk);
 
-	if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM)
-	    || sk->sk_state != LLCP_BOUND) {
+	if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) ||
+	    sk->sk_state != LLCP_BOUND) {
 		ret = -EBADFD;
 		goto error;
 	}
@@ -608,6 +608,25 @@ static int llcp_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
 
 	lock_sock(sk);
 
+	if (sk->sk_type == SOCK_DGRAM) {
+		struct sockaddr_nfc_llcp *addr =
+			(struct sockaddr_nfc_llcp *)msg->msg_name;
+
+		if (msg->msg_namelen < sizeof(*addr)) {
+			release_sock(sk);
+
+			pr_err("Invalid socket address length %d\n",
+			       msg->msg_namelen);
+
+			return -EINVAL;
+		}
+
+		release_sock(sk);
+
+		return nfc_llcp_send_ui_frame(llcp_sock, addr->dsap, addr->ssap,
+					      msg, len);
+	}
+
 	if (sk->sk_state != LLCP_CONNECTED) {
 		release_sock(sk);
 		return -ENOTCONN;
@@ -663,11 +682,28 @@ static int llcp_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
 		return -EFAULT;
 	}
 
+	if (sk->sk_type == SOCK_DGRAM && msg->msg_name) {
+		struct nfc_llcp_ui_cb *ui_cb = nfc_llcp_ui_skb_cb(skb);
+		struct sockaddr_nfc_llcp sockaddr;
+
+		pr_debug("Datagram socket %d %d\n", ui_cb->dsap, ui_cb->ssap);
+
+		sockaddr.sa_family = AF_NFC;
+		sockaddr.nfc_protocol = NFC_PROTO_NFC_DEP;
+		sockaddr.dsap = ui_cb->dsap;
+		sockaddr.ssap = ui_cb->ssap;
+
+		memcpy(msg->msg_name, &sockaddr, sizeof(sockaddr));
+		msg->msg_namelen = sizeof(sockaddr);
+	}
+
 	/* Mark read part of skb as used */
 	if (!(flags & MSG_PEEK)) {
 
 		/* SOCK_STREAM: re-queue skb if it contains unreceived data */
-		if (sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_RAW) {
+		if (sk->sk_type == SOCK_STREAM ||
+		    sk->sk_type == SOCK_DGRAM ||
+		    sk->sk_type == SOCK_RAW) {
 			skb_pull(skb, copied);
 			if (skb->len) {
 				skb_queue_head(&sk->sk_receive_queue, skb);

net/nfc/nci/Kconfig

 config NFC_NCI
-	depends on NFC && EXPERIMENTAL
-	tristate "NCI protocol support (EXPERIMENTAL)"
+	depends on NFC
+	tristate "NCI protocol support"
 	default n
 	help
 	  NCI (NFC Controller Interface) is a communication protocol between

net/nfc/nci/core.c

@@ -205,10 +205,10 @@ static void nci_rf_discover_req(struct nci_dev *ndev, unsigned long opt)
 	cmd.num_disc_configs = 0;
 
 	if ((cmd.num_disc_configs < NCI_MAX_NUM_RF_CONFIGS) &&
-	    (protocols & NFC_PROTO_JEWEL_MASK
-	     || protocols & NFC_PROTO_MIFARE_MASK
-	     || protocols & NFC_PROTO_ISO14443_MASK
-	     || protocols & NFC_PROTO_NFC_DEP_MASK)) {
+	    (protocols & NFC_PROTO_JEWEL_MASK ||
+	     protocols & NFC_PROTO_MIFARE_MASK ||
+	     protocols & NFC_PROTO_ISO14443_MASK ||
+	     protocols & NFC_PROTO_NFC_DEP_MASK)) {
 		cmd.disc_configs[cmd.num_disc_configs].rf_tech_and_mode =
 			NCI_NFC_A_PASSIVE_POLL_MODE;
 		cmd.disc_configs[cmd.num_disc_configs].frequency = 1;
@@ -224,8 +224,8 @@ static void nci_rf_discover_req(struct nci_dev *ndev, unsigned long opt)
 	}
 
 	if ((cmd.num_disc_configs < NCI_MAX_NUM_RF_CONFIGS) &&
-	    (protocols & NFC_PROTO_FELICA_MASK
-	     || protocols & NFC_PROTO_NFC_DEP_MASK)) {
+	    (protocols & NFC_PROTO_FELICA_MASK ||
+	     protocols & NFC_PROTO_NFC_DEP_MASK)) {
 		cmd.disc_configs[cmd.num_disc_configs].rf_tech_and_mode =
 			NCI_NFC_F_PASSIVE_POLL_MODE;
 		cmd.disc_configs[cmd.num_disc_configs].frequency = 1;
@@ -414,13 +414,13 @@ static int nci_set_local_general_bytes(struct nfc_dev *nfc_dev)
 	struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
 	struct nci_set_config_param param;
 	__u8 local_gb[NFC_MAX_GT_LEN];
-	int i, rc = 0;
+	int i;
 
 	param.val = nfc_get_local_general_bytes(nfc_dev, &param.len);
 	if ((param.val == NULL) || (param.len == 0))
-		return rc;
+		return 0;
 
-	if (param.len > NCI_MAX_PARAM_LEN)
+	if (param.len > NFC_MAX_GT_LEN)
 		return -EINVAL;
 
 	for (i = 0; i < param.len; i++)
@@ -429,10 +429,8 @@ static int nci_set_local_general_bytes(struct nfc_dev *nfc_dev)
 	param.id = NCI_PN_ATR_REQ_GEN_BYTES;
 	param.val = local_gb;
 
-	rc = nci_request(ndev, nci_set_config_req, (unsigned long)&param,
-			 msecs_to_jiffies(NCI_SET_CONFIG_TIMEOUT));
-
-	return rc;
+	return nci_request(ndev, nci_set_config_req, (unsigned long)&param,
+			   msecs_to_jiffies(NCI_SET_CONFIG_TIMEOUT));
 }
 
 static int nci_start_poll(struct nfc_dev *nfc_dev,
@@ -579,7 +577,6 @@ static void nci_deactivate_target(struct nfc_dev *nfc_dev,
 	}
 }
 
-
 static int nci_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
 			   __u8 comm_mode, __u8 *gb, size_t gb_len)
 {
@@ -806,8 +803,8 @@ int nci_recv_frame(struct sk_buff *skb)
 
 	pr_debug("len %d\n", skb->len);
 
-	if (!ndev || (!test_bit(NCI_UP, &ndev->flags)
-		      && !test_bit(NCI_INIT, &ndev->flags))) {
+	if (!ndev || (!test_bit(NCI_UP, &ndev->flags) &&
+	    !test_bit(NCI_INIT, &ndev->flags))) {
 		kfree_skb(skb);
 		return -ENXIO;
 	}

net/nfc/netlink.c

@@ -29,6 +29,8 @@
 
 #include "nfc.h"
 
+#include "llcp/llcp.h"
+
 static struct genl_multicast_group nfc_genl_event_mcgrp = {
 	.name = NFC_GENL_MCAST_EVENT_NAME,
 };
@@ -364,7 +366,8 @@ static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
 	if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
 	    nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
 	    nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
-	    nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up))
+	    nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) ||
+	    nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode))
 		goto nla_put_failure;
 
 	return genlmsg_end(msg, hdr);
@@ -590,7 +593,7 @@ static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info)
 	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
 	    ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] &&
 	      !info->attrs[NFC_ATTR_PROTOCOLS]) &&
-	     !info->attrs[NFC_ATTR_TM_PROTOCOLS]))
+	      !info->attrs[NFC_ATTR_TM_PROTOCOLS]))
 		return -EINVAL;
 
 	idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
@@ -715,6 +718,146 @@ static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info)
 	return rc;
 }
 
+static int nfc_genl_send_params(struct sk_buff *msg,
+				struct nfc_llcp_local *local,
+				u32 portid, u32 seq)
+{
+	void *hdr;
+
+	hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0,
+			  NFC_CMD_LLC_GET_PARAMS);
+	if (!hdr)
+		return -EMSGSIZE;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) ||
+	    nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) ||
+	    nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) ||
+	    nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux)))
+		goto nla_put_failure;
+
+	return genlmsg_end(msg, hdr);
+
+nla_put_failure:
+
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	struct nfc_llcp_local *local;
+	int rc = 0;
+	struct sk_buff *msg = NULL;
+	u32 idx;
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
+		return -EINVAL;
+
+	idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+	dev = nfc_get_device(idx);
+	if (!dev)
+		return -ENODEV;
+
+	device_lock(&dev->dev);
+
+	local = nfc_llcp_find_local(dev);
+	if (!local) {
+		rc = -ENODEV;
+		goto exit;
+	}
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg) {
+		rc = -ENOMEM;
+		goto exit;
+	}
+
+	rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq);
+
+exit:
+	device_unlock(&dev->dev);
+
+	nfc_put_device(dev);
+
+	if (rc < 0) {
+		if (msg)
+			nlmsg_free(msg);
+
+		return rc;
+	}
+
+	return genlmsg_reply(msg, info);
+}
+
+static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	struct nfc_llcp_local *local;
+	u8 rw = 0;
+	u16 miux = 0;
+	u32 idx;
+	int rc = 0;
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+	    (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] &&
+	     !info->attrs[NFC_ATTR_LLC_PARAM_RW] &&
+	     !info->attrs[NFC_ATTR_LLC_PARAM_MIUX]))
+		return -EINVAL;
+
+	if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) {
+		rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]);
+
+		if (rw > LLCP_MAX_RW)
+			return -EINVAL;
+	}
+
+	if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) {
+		miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]);
+
+		if (miux > LLCP_MAX_MIUX)
+			return -EINVAL;
+	}
+
+	idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+	dev = nfc_get_device(idx);
+	if (!dev)
+		return -ENODEV;
+
+	device_lock(&dev->dev);
+
+	local = nfc_llcp_find_local(dev);
+	if (!local) {
+		nfc_put_device(dev);
+		rc = -ENODEV;
+		goto exit;
+	}
+
+	if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) {
+		if (dev->dep_link_up) {
+			rc = -EINPROGRESS;
+			goto exit;
+		}
+
+		local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]);
+	}
+
+	if (info->attrs[NFC_ATTR_LLC_PARAM_RW])
+		local->rw = rw;
+
+	if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX])
+		local->miux = cpu_to_be16(miux);
+
+exit:
+	device_unlock(&dev->dev);
+
+	nfc_put_device(dev);
+
+	return rc;
+}
+
 static struct genl_ops nfc_genl_ops[] = {
 	{
 		.cmd = NFC_CMD_GET_DEVICE,
@@ -759,6 +902,16 @@ static struct genl_ops nfc_genl_ops[] = {
 		.done = nfc_genl_dump_targets_done,
 		.policy = nfc_genl_policy,
 	},
+	{
+		.cmd = NFC_CMD_LLC_GET_PARAMS,
+		.doit = nfc_genl_llc_get_params,
+		.policy = nfc_genl_policy,
+	},
+	{
+		.cmd = NFC_CMD_LLC_SET_PARAMS,
+		.doit = nfc_genl_llc_set_params,
+		.policy = nfc_genl_policy,
+	},
 };
 
 

net/nfc/nfc.h

@@ -56,6 +56,7 @@ void nfc_llcp_unregister_device(struct nfc_dev *dev);
 int nfc_llcp_set_remote_gb(struct nfc_dev *dev, u8 *gb, u8 gb_len);
 u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len);
 int nfc_llcp_data_received(struct nfc_dev *dev, struct sk_buff *skb);
+struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
 int __init nfc_llcp_init(void);
 void nfc_llcp_exit(void);
 
@@ -97,6 +98,11 @@ static inline int nfc_llcp_data_received(struct nfc_dev *dev,
 	return 0;
 }
 
+static inline struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev)
+{
+	return NULL;
+}
+
 static inline int nfc_llcp_init(void)
 {
 	return 0;

net/nfc/rawsock.c

@@ -256,7 +256,6 @@ static int rawsock_recvmsg(struct kiocb *iocb, struct socket *sock,
 	return rc ? : copied;
 }
 
-
 static const struct proto_ops rawsock_ops = {
 	.family         = PF_NFC,
 	.owner          = THIS_MODULE,