[linux-2.6-block.git] / net / nfc / nci / ntf.c

/*
 *  The NFC Controller Interface is the communication protocol between an
 *  NFC Controller (NFCC) and a Device Host (DH).
 *
 *  Copyright (C) 2011 Texas Instruments, Inc.
 *
 *  Written by Ilan Elias <ilane@ti.com>
 *
 *  Acknowledgements:
 *  This file is based on hci_event.c, which was written
 *  by Maxim Krasnyansky.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2
 *  as published by the Free Software Foundation
 *
 *  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
 *
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__

#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
#include <linux/skbuff.h>

#include "../nfc.h"
#include <net/nfc/nci.h>
#include <net/nfc/nci_core.h>
#include <linux/nfc.h>

/* Handle NCI Notification packets */

static void nci_core_conn_credits_ntf_packet(struct nci_dev *ndev,
						struct sk_buff *skb)
{
	struct nci_core_conn_credit_ntf *ntf = (void *) skb->data;
	int i;

	pr_debug("num_entries %d\n", ntf->num_entries);

	if (ntf->num_entries > NCI_MAX_NUM_CONN)
		ntf->num_entries = NCI_MAX_NUM_CONN;

	/* update the credits */
	for (i = 0; i < ntf->num_entries; i++) {
		ntf->conn_entries[i].conn_id =
			nci_conn_id(&ntf->conn_entries[i].conn_id);

		pr_debug("entry[%d]: conn_id %d, credits %d\n",
			 i, ntf->conn_entries[i].conn_id,
			 ntf->conn_entries[i].credits);

		if (ntf->conn_entries[i].conn_id == NCI_STATIC_RF_CONN_ID) {
			/* found static rf connection */
			atomic_add(ntf->conn_entries[i].credits,
				&ndev->credits_cnt);
		}
	}

	/* trigger the next tx */
	if (!skb_queue_empty(&ndev->tx_q))
		queue_work(ndev->tx_wq, &ndev->tx_work);
}

static void nci_core_conn_intf_error_ntf_packet(struct nci_dev *ndev,
						struct sk_buff *skb)
{
	struct nci_core_intf_error_ntf *ntf = (void *) skb->data;

	ntf->conn_id = nci_conn_id(&ntf->conn_id);

	pr_debug("status 0x%x, conn_id %d\n", ntf->status, ntf->conn_id);

	/* complete the data exchange transaction, if exists */
	if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
		nci_data_exchange_complete(ndev, NULL, -EIO);
}

static __u8 *nci_extract_rf_params_nfca_passive_poll(struct nci_dev *ndev,
			struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
{
	struct rf_tech_specific_params_nfca_poll *nfca_poll;

	nfca_poll = &ntf->rf_tech_specific_params.nfca_poll;

	nfca_poll->sens_res = __le16_to_cpu(*((__u16 *)data));
	data += 2;

	nfca_poll->nfcid1_len = *data++;

	pr_debug("sens_res 0x%x, nfcid1_len %d\n",
		 nfca_poll->sens_res, nfca_poll->nfcid1_len);

	memcpy(nfca_poll->nfcid1, data, nfca_poll->nfcid1_len);
	data += nfca_poll->nfcid1_len;

	nfca_poll->sel_res_len = *data++;

	if (nfca_poll->sel_res_len != 0)
		nfca_poll->sel_res = *data++;

	pr_debug("sel_res_len %d, sel_res 0x%x\n",
		 nfca_poll->sel_res_len,
		 nfca_poll->sel_res);

	return data;
}

static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
			struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
{
	struct activation_params_nfca_poll_iso_dep *nfca_poll;

	switch (ntf->activation_rf_tech_and_mode) {
	case NCI_NFC_A_PASSIVE_POLL_MODE:
		nfca_poll = &ntf->activation_params.nfca_poll_iso_dep;
		nfca_poll->rats_res_len = *data++;
		if (nfca_poll->rats_res_len > 0) {
			memcpy(nfca_poll->rats_res,
				data,
				nfca_poll->rats_res_len);
		}
		break;

	default:
		pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
		       ntf->activation_rf_tech_and_mode);
		return -EPROTO;
	}

	return 0;
}

static void nci_target_found(struct nci_dev *ndev,
				struct nci_rf_intf_activated_ntf *ntf)
{
	struct nfc_target nfc_tgt;

	if (ntf->rf_protocol == NCI_RF_PROTOCOL_T2T)	/* T2T MifareUL */
		nfc_tgt.supported_protocols = NFC_PROTO_MIFARE_MASK;
	else if (ntf->rf_protocol == NCI_RF_PROTOCOL_ISO_DEP)	/* 4A */
		nfc_tgt.supported_protocols = NFC_PROTO_ISO14443_MASK;
	else
		nfc_tgt.supported_protocols = 0;

	nfc_tgt.sens_res = ntf->rf_tech_specific_params.nfca_poll.sens_res;
	nfc_tgt.sel_res = ntf->rf_tech_specific_params.nfca_poll.sel_res;

	if (!(nfc_tgt.supported_protocols & ndev->poll_prots)) {
		pr_debug("the target found does not have the desired protocol\n");
		return;
	}

	pr_debug("new target found,  supported_protocols 0x%x\n",
		 nfc_tgt.supported_protocols);

	ndev->target_available_prots = nfc_tgt.supported_protocols;
	ndev->max_data_pkt_payload_size = ntf->max_data_pkt_payload_size;
	ndev->initial_num_credits = ntf->initial_num_credits;

	/* set the available credits to initial value */
	atomic_set(&ndev->credits_cnt, ndev->initial_num_credits);

	nfc_targets_found(ndev->nfc_dev, &nfc_tgt, 1);
}

static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
						struct sk_buff *skb)
{
	struct nci_rf_intf_activated_ntf ntf;
	__u8 *data = skb->data;
	int err = 0;

	clear_bit(NCI_DISCOVERY, &ndev->flags);
	set_bit(NCI_POLL_ACTIVE, &ndev->flags);

	ntf.rf_discovery_id = *data++;
	ntf.rf_interface = *data++;
	ntf.rf_protocol = *data++;
	ntf.activation_rf_tech_and_mode = *data++;
	ntf.max_data_pkt_payload_size = *data++;
	ntf.initial_num_credits = *data++;
	ntf.rf_tech_specific_params_len = *data++;

	pr_debug("rf_discovery_id %d\n", ntf.rf_discovery_id);
	pr_debug("rf_interface 0x%x\n", ntf.rf_interface);
	pr_debug("rf_protocol 0x%x\n", ntf.rf_protocol);
	pr_debug("activation_rf_tech_and_mode 0x%x\n",
		 ntf.activation_rf_tech_and_mode);
	pr_debug("max_data_pkt_payload_size 0x%x\n",
		 ntf.max_data_pkt_payload_size);
	pr_debug("initial_num_credits 0x%x\n", ntf.initial_num_credits);
	pr_debug("rf_tech_specific_params_len %d\n",
		 ntf.rf_tech_specific_params_len);

	if (ntf.rf_tech_specific_params_len > 0) {
		switch (ntf.activation_rf_tech_and_mode) {
		case NCI_NFC_A_PASSIVE_POLL_MODE:
			data = nci_extract_rf_params_nfca_passive_poll(ndev,
				&ntf, data);
			break;

		default:
			pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
			       ntf.activation_rf_tech_and_mode);
			return;
		}
	}

	ntf.data_exch_rf_tech_and_mode = *data++;
	ntf.data_exch_tx_bit_rate = *data++;
	ntf.data_exch_rx_bit_rate = *data++;
	ntf.activation_params_len = *data++;

	pr_debug("data_exch_rf_tech_and_mode 0x%x\n",
		 ntf.data_exch_rf_tech_and_mode);
	pr_debug("data_exch_tx_bit_rate 0x%x\n",
		 ntf.data_exch_tx_bit_rate);
	pr_debug("data_exch_rx_bit_rate 0x%x\n",
		 ntf.data_exch_rx_bit_rate);
	pr_debug("activation_params_len %d\n",
		 ntf.activation_params_len);

	if (ntf.activation_params_len > 0) {
		switch (ntf.rf_interface) {
		case NCI_RF_INTERFACE_ISO_DEP:
			err = nci_extract_activation_params_iso_dep(ndev,
				&ntf, data);
			break;

		case NCI_RF_INTERFACE_FRAME:
			/* no activation params */
			break;

		default:
			pr_err("unsupported rf_interface 0x%x\n",
			       ntf.rf_interface);
			return;
		}
	}

	if (!err)
		nci_target_found(ndev, &ntf);
}

static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev,
					struct sk_buff *skb)
{
	struct nci_rf_deactivate_ntf *ntf = (void *) skb->data;

	pr_debug("entry, type 0x%x, reason 0x%x\n", ntf->type, ntf->reason);

	clear_bit(NCI_POLL_ACTIVE, &ndev->flags);
	ndev->target_active_prot = 0;

	/* drop tx data queue */
	skb_queue_purge(&ndev->tx_q);

	/* drop partial rx data packet */
	if (ndev->rx_data_reassembly) {
		kfree_skb(ndev->rx_data_reassembly);
		ndev->rx_data_reassembly = 0;
	}

	/* complete the data exchange transaction, if exists */
	if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
		nci_data_exchange_complete(ndev, NULL, -EIO);
}

void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
{
	__u16 ntf_opcode = nci_opcode(skb->data);

	pr_debug("NCI RX: MT=ntf, PBF=%d, GID=0x%x, OID=0x%x, plen=%d\n",
		 nci_pbf(skb->data),
		 nci_opcode_gid(ntf_opcode),
		 nci_opcode_oid(ntf_opcode),
		 nci_plen(skb->data));

	/* strip the nci control header */
	skb_pull(skb, NCI_CTRL_HDR_SIZE);

	switch (ntf_opcode) {
	case NCI_OP_CORE_CONN_CREDITS_NTF:
		nci_core_conn_credits_ntf_packet(ndev, skb);
		break;

	case NCI_OP_CORE_INTF_ERROR_NTF:
		nci_core_conn_intf_error_ntf_packet(ndev, skb);
		break;

	case NCI_OP_RF_INTF_ACTIVATED_NTF:
		nci_rf_intf_activated_ntf_packet(ndev, skb);
		break;

	case NCI_OP_RF_DEACTIVATE_NTF:
		nci_rf_deactivate_ntf_packet(ndev, skb);
		break;

	default:
		pr_err("unknown ntf opcode 0x%x\n", ntf_opcode);
		break;
	}

	kfree_skb(skb);
}
Commit	Line	Data
6a2968aa IE	1	/*
	2	* The NFC Controller Interface is the communication protocol between an
	3	* NFC Controller (NFCC) and a Device Host (DH).
	4	*
	5	* Copyright (C) 2011 Texas Instruments, Inc.
	6	*
	7	* Written by Ilan Elias <ilane@ti.com>
	8	*
	9	* Acknowledgements:
	10	* This file is based on hci_event.c, which was written
	11	* by Maxim Krasnyansky.
	12	*
	13	* This program is free software; you can redistribute it and/or modify
	14	* it under the terms of the GNU General Public License version 2
	15	* as published by the Free Software Foundation
	16	*
	17	* This program is distributed in the hope that it will be useful,
	18	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	* GNU General Public License for more details.
	21	*
	22	* You should have received a copy of the GNU General Public License
	23	* along with this program; if not, write to the Free Software
	24	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	25	*
	26	*/
	27
52858b51	28	#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
ed1e0ad8	29
6a2968aa IE	30	#include <linux/types.h>
	31	#include <linux/interrupt.h>
	32	#include <linux/bitops.h>
	33	#include <linux/skbuff.h>
	34
	35	#include "../nfc.h"
	36	#include <net/nfc/nci.h>
	37	#include <net/nfc/nci_core.h>
	38	#include <linux/nfc.h>
	39
	40	/* Handle NCI Notification packets */
	41
	42	static void nci_core_conn_credits_ntf_packet(struct nci_dev *ndev,
	43	struct sk_buff *skb)
	44	{
	45	struct nci_core_conn_credit_ntf ntf = (void ) skb->data;
	46	int i;
	47
24bf3304	48	pr_debug("num_entries %d\n", ntf->num_entries);
6a2968aa IE	49
	50	if (ntf->num_entries > NCI_MAX_NUM_CONN)
	51	ntf->num_entries = NCI_MAX_NUM_CONN;
	52
	53	/* update the credits */
	54	for (i = 0; i < ntf->num_entries; i++) {
637d85a7 IE	55	ntf->conn_entries[i].conn_id =
	56	nci_conn_id(&ntf->conn_entries[i].conn_id);
	57
20c239c1 JP	58	pr_debug("entry[%d]: conn_id %d, credits %d\n",
	59	i, ntf->conn_entries[i].conn_id,
	60	ntf->conn_entries[i].credits);
6a2968aa	61
e8c0dacd	62	if (ntf->conn_entries[i].conn_id == NCI_STATIC_RF_CONN_ID) {
6a2968aa IE	63	/* found static rf connection */
	64	atomic_add(ntf->conn_entries[i].credits,
	65	&ndev->credits_cnt);
	66	}
	67	}
	68
	69	/* trigger the next tx */
	70	if (!skb_queue_empty(&ndev->tx_q))
	71	queue_work(ndev->tx_wq, &ndev->tx_work);
	72	}
	73
004161cb IE	74	static void nci_core_conn_intf_error_ntf_packet(struct nci_dev *ndev,
	75	struct sk_buff *skb)
	76	{
	77	struct nci_core_intf_error_ntf ntf = (void ) skb->data;
	78
	79	ntf->conn_id = nci_conn_id(&ntf->conn_id);
	80
	81	pr_debug("status 0x%x, conn_id %d\n", ntf->status, ntf->conn_id);
	82
	83	/* complete the data exchange transaction, if exists */
	84	if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
	85	nci_data_exchange_complete(ndev, NULL, -EIO);
	86	}
	87
e8c0dacd IE	88	static __u8 nci_extract_rf_params_nfca_passive_poll(struct nci_dev ndev,
e8c0dacd IE	89	struct nci_rf_intf_activated_ntf ntf, __u8 data)
6a2968aa IE	90	{
6a2968aa IE	91	struct rf_tech_specific_params_nfca_poll *nfca_poll;
6a2968aa IE	92
6a2968aa IE	93	nfca_poll = &ntf->rf_tech_specific_params.nfca_poll;
6a2968aa IE	94
	95	nfca_poll->sens_res = __le16_to_cpu(((__u16 )data));
	96	data += 2;
	97
	98	nfca_poll->nfcid1_len = *data++;
	99
20c239c1 JP	100	pr_debug("sens_res 0x%x, nfcid1_len %d\n",
20c239c1 JP	101	nfca_poll->sens_res, nfca_poll->nfcid1_len);
6a2968aa IE	102
	103	memcpy(nfca_poll->nfcid1, data, nfca_poll->nfcid1_len);
	104	data += nfca_poll->nfcid1_len;
	105
	106	nfca_poll->sel_res_len = *data++;
	107
	108	if (nfca_poll->sel_res_len != 0)
	109	nfca_poll->sel_res = *data++;
	110
20c239c1 JP	111	pr_debug("sel_res_len %d, sel_res 0x%x\n",
	112	nfca_poll->sel_res_len,
	113	nfca_poll->sel_res);
e8c0dacd IE	114
	115	return data;
	116	}
	117
	118	static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
	119	struct nci_rf_intf_activated_ntf ntf, __u8 data)
	120	{
	121	struct activation_params_nfca_poll_iso_dep *nfca_poll;
	122
	123	switch (ntf->activation_rf_tech_and_mode) {
	124	case NCI_NFC_A_PASSIVE_POLL_MODE:
	125	nfca_poll = &ntf->activation_params.nfca_poll_iso_dep;
	126	nfca_poll->rats_res_len = *data++;
	127	if (nfca_poll->rats_res_len > 0) {
	128	memcpy(nfca_poll->rats_res,
6a2968aa	129	data,
e8c0dacd	130	nfca_poll->rats_res_len);
6a2968aa IE	131	}
	132	break;
	133
6a2968aa	134	default:
ed1e0ad8 JP	135	pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
ed1e0ad8 JP	136	ntf->activation_rf_tech_and_mode);
6a2968aa IE	137	return -EPROTO;
	138	}
	139
	140	return 0;
	141	}
	142
	143	static void nci_target_found(struct nci_dev *ndev,
e8c0dacd	144	struct nci_rf_intf_activated_ntf *ntf)
6a2968aa IE	145	{
	146	struct nfc_target nfc_tgt;
	147
	148	if (ntf->rf_protocol == NCI_RF_PROTOCOL_T2T) /* T2T MifareUL */
	149	nfc_tgt.supported_protocols = NFC_PROTO_MIFARE_MASK;
	150	else if (ntf->rf_protocol == NCI_RF_PROTOCOL_ISO_DEP) /* 4A */
	151	nfc_tgt.supported_protocols = NFC_PROTO_ISO14443_MASK;
e8c0dacd IE	152	else
e8c0dacd IE	153	nfc_tgt.supported_protocols = 0;
6a2968aa IE	154
	155	nfc_tgt.sens_res = ntf->rf_tech_specific_params.nfca_poll.sens_res;
	156	nfc_tgt.sel_res = ntf->rf_tech_specific_params.nfca_poll.sel_res;
	157
	158	if (!(nfc_tgt.supported_protocols & ndev->poll_prots)) {
20c239c1	159	pr_debug("the target found does not have the desired protocol\n");
6a2968aa IE	160	return;
	161	}
	162
20c239c1 JP	163	pr_debug("new target found, supported_protocols 0x%x\n",
20c239c1 JP	164	nfc_tgt.supported_protocols);
6a2968aa IE	165
6a2968aa IE	166	ndev->target_available_prots = nfc_tgt.supported_protocols;
637d85a7 IE	167	ndev->max_data_pkt_payload_size = ntf->max_data_pkt_payload_size;
	168	ndev->initial_num_credits = ntf->initial_num_credits;
	169
	170	/* set the available credits to initial value */
	171	atomic_set(&ndev->credits_cnt, ndev->initial_num_credits);
6a2968aa IE	172
	173	nfc_targets_found(ndev->nfc_dev, &nfc_tgt, 1);
	174	}
	175
e8c0dacd IE	176	static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
e8c0dacd IE	177	struct sk_buff *skb)
6a2968aa	178	{
e8c0dacd	179	struct nci_rf_intf_activated_ntf ntf;
6a2968aa	180	__u8 *data = skb->data;
e8c0dacd	181	int err = 0;
6a2968aa IE	182
	183	clear_bit(NCI_DISCOVERY, &ndev->flags);
	184	set_bit(NCI_POLL_ACTIVE, &ndev->flags);
	185
e8c0dacd	186	ntf.rf_discovery_id = *data++;
637d85a7	187	ntf.rf_interface = *data++;
6a2968aa	188	ntf.rf_protocol = *data++;
e8c0dacd	189	ntf.activation_rf_tech_and_mode = *data++;
637d85a7 IE	190	ntf.max_data_pkt_payload_size = *data++;
637d85a7 IE	191	ntf.initial_num_credits = *data++;
6a2968aa IE	192	ntf.rf_tech_specific_params_len = *data++;
6a2968aa IE	193
20c239c1	194	pr_debug("rf_discovery_id %d\n", ntf.rf_discovery_id);
637d85a7	195	pr_debug("rf_interface 0x%x\n", ntf.rf_interface);
20c239c1 JP	196	pr_debug("rf_protocol 0x%x\n", ntf.rf_protocol);
	197	pr_debug("activation_rf_tech_and_mode 0x%x\n",
	198	ntf.activation_rf_tech_and_mode);
637d85a7 IE	199	pr_debug("max_data_pkt_payload_size 0x%x\n",
	200	ntf.max_data_pkt_payload_size);
	201	pr_debug("initial_num_credits 0x%x\n", ntf.initial_num_credits);
20c239c1 JP	202	pr_debug("rf_tech_specific_params_len %d\n",
20c239c1 JP	203	ntf.rf_tech_specific_params_len);
6a2968aa	204
e8c0dacd IE	205	if (ntf.rf_tech_specific_params_len > 0) {
	206	switch (ntf.activation_rf_tech_and_mode) {
	207	case NCI_NFC_A_PASSIVE_POLL_MODE:
	208	data = nci_extract_rf_params_nfca_passive_poll(ndev,
	209	&ntf, data);
	210	break;
	211
	212	default:
ed1e0ad8 JP	213	pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
ed1e0ad8 JP	214	ntf.activation_rf_tech_and_mode);
e8c0dacd IE	215	return;
	216	}
	217	}
6a2968aa	218
e8c0dacd IE	219	ntf.data_exch_rf_tech_and_mode = *data++;
	220	ntf.data_exch_tx_bit_rate = *data++;
	221	ntf.data_exch_rx_bit_rate = *data++;
	222	ntf.activation_params_len = *data++;
	223
20c239c1 JP	224	pr_debug("data_exch_rf_tech_and_mode 0x%x\n",
	225	ntf.data_exch_rf_tech_and_mode);
	226	pr_debug("data_exch_tx_bit_rate 0x%x\n",
	227	ntf.data_exch_tx_bit_rate);
	228	pr_debug("data_exch_rx_bit_rate 0x%x\n",
	229	ntf.data_exch_rx_bit_rate);
	230	pr_debug("activation_params_len %d\n",
	231	ntf.activation_params_len);
e8c0dacd IE	232
e8c0dacd IE	233	if (ntf.activation_params_len > 0) {
637d85a7	234	switch (ntf.rf_interface) {
e8c0dacd IE	235	case NCI_RF_INTERFACE_ISO_DEP:
	236	err = nci_extract_activation_params_iso_dep(ndev,
	237	&ntf, data);
	238	break;
	239
	240	case NCI_RF_INTERFACE_FRAME:
	241	/* no activation params */
	242	break;
	243
	244	default:
637d85a7 IE	245	pr_err("unsupported rf_interface 0x%x\n",
637d85a7 IE	246	ntf.rf_interface);
e8c0dacd IE	247	return;
e8c0dacd IE	248	}
6a2968aa IE	249	}
6a2968aa IE	250
e8c0dacd	251	if (!err)
6a2968aa IE	252	nci_target_found(ndev, &ntf);
	253	}
	254
	255	static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev,
	256	struct sk_buff *skb)
	257	{
e8c0dacd	258	struct nci_rf_deactivate_ntf ntf = (void ) skb->data;
6a2968aa	259
20c239c1	260	pr_debug("entry, type 0x%x, reason 0x%x\n", ntf->type, ntf->reason);
6a2968aa IE	261
	262	clear_bit(NCI_POLL_ACTIVE, &ndev->flags);
	263	ndev->target_active_prot = 0;
	264
	265	/* drop tx data queue */
	266	skb_queue_purge(&ndev->tx_q);
	267
	268	/* drop partial rx data packet */
	269	if (ndev->rx_data_reassembly) {
	270	kfree_skb(ndev->rx_data_reassembly);
	271	ndev->rx_data_reassembly = 0;
	272	}
	273
	274	/* complete the data exchange transaction, if exists */
38f04c6b	275	if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
6a2968aa IE	276	nci_data_exchange_complete(ndev, NULL, -EIO);
	277	}
	278
	279	void nci_ntf_packet(struct nci_dev ndev, struct sk_buff skb)
	280	{
	281	__u16 ntf_opcode = nci_opcode(skb->data);
	282
20c239c1 JP	283	pr_debug("NCI RX: MT=ntf, PBF=%d, GID=0x%x, OID=0x%x, plen=%d\n",
	284	nci_pbf(skb->data),
	285	nci_opcode_gid(ntf_opcode),
	286	nci_opcode_oid(ntf_opcode),
	287	nci_plen(skb->data));
6a2968aa IE	288
	289	/* strip the nci control header */
	290	skb_pull(skb, NCI_CTRL_HDR_SIZE);
	291
	292	switch (ntf_opcode) {
	293	case NCI_OP_CORE_CONN_CREDITS_NTF:
	294	nci_core_conn_credits_ntf_packet(ndev, skb);
	295	break;
	296
004161cb IE	297	case NCI_OP_CORE_INTF_ERROR_NTF:
	298	nci_core_conn_intf_error_ntf_packet(ndev, skb);
	299	break;
	300
e8c0dacd IE	301	case NCI_OP_RF_INTF_ACTIVATED_NTF:
e8c0dacd IE	302	nci_rf_intf_activated_ntf_packet(ndev, skb);
6a2968aa IE	303	break;
	304
	305	case NCI_OP_RF_DEACTIVATE_NTF:
	306	nci_rf_deactivate_ntf_packet(ndev, skb);
	307	break;
	308
	309	default:
ed1e0ad8	310	pr_err("unknown ntf opcode 0x%x\n", ntf_opcode);
6a2968aa IE	311	break;
	312	}
	313
	314	kfree_skb(skb);
	315	}