Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 1105 insertions, 0 deletions

diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
new file mode 100644
index 000000000..ceb87db57
--- /dev/null
+++ b/net/nfc/hci/core.c
@@ -0,0 +1,1105 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2012  Intel Corporation. All rights reserved.
+ */
+
+#define pr_fmt(fmt) "hci: %s: " fmt, __func__
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/nfc.h>
+
+#include <net/nfc/nfc.h>
+#include <net/nfc/hci.h>
+#include <net/nfc/llc.h>
+
+#include "hci.h"
+
+/* Largest headroom needed for outgoing HCI commands */
+#define HCI_CMDS_HEADROOM 1
+
+int nfc_hci_result_to_errno(u8 result)
+{
+	switch (result) {
+	case NFC_HCI_ANY_OK:
+		return 0;
+	case NFC_HCI_ANY_E_REG_PAR_UNKNOWN:
+		return -EOPNOTSUPP;
+	case NFC_HCI_ANY_E_TIMEOUT:
+		return -ETIME;
+	default:
+		return -1;
+	}
+}
+EXPORT_SYMBOL(nfc_hci_result_to_errno);
+
+void nfc_hci_reset_pipes(struct nfc_hci_dev *hdev)
+{
+	int i = 0;
+
+	for (i = 0; i < NFC_HCI_MAX_PIPES; i++) {
+		hdev->pipes[i].gate = NFC_HCI_INVALID_GATE;
+		hdev->pipes[i].dest_host = NFC_HCI_INVALID_HOST;
+	}
+	memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
+}
+EXPORT_SYMBOL(nfc_hci_reset_pipes);
+
+void nfc_hci_reset_pipes_per_host(struct nfc_hci_dev *hdev, u8 host)
+{
+	int i = 0;
+
+	for (i = 0; i < NFC_HCI_MAX_PIPES; i++) {
+		if (hdev->pipes[i].dest_host != host)
+			continue;
+
+		hdev->pipes[i].gate = NFC_HCI_INVALID_GATE;
+		hdev->pipes[i].dest_host = NFC_HCI_INVALID_HOST;
+	}
+}
+EXPORT_SYMBOL(nfc_hci_reset_pipes_per_host);
+
+static void nfc_hci_msg_tx_work(struct work_struct *work)
+{
+	struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev,
+						msg_tx_work);
+	struct hci_msg *msg;
+	struct sk_buff *skb;
+	int r = 0;
+
+	mutex_lock(&hdev->msg_tx_mutex);
+	if (hdev->shutting_down)
+		goto exit;
+
+	if (hdev->cmd_pending_msg) {
+		if (timer_pending(&hdev->cmd_timer) == 0) {
+			if (hdev->cmd_pending_msg->cb)
+				hdev->cmd_pending_msg->cb(hdev->
+							  cmd_pending_msg->
+							  cb_context,
+							  NULL,
+							  -ETIME);
+			kfree(hdev->cmd_pending_msg);
+			hdev->cmd_pending_msg = NULL;
+		} else {
+			goto exit;
+		}
+	}
+
+next_msg:
+	if (list_empty(&hdev->msg_tx_queue))
+		goto exit;
+
+	msg = list_first_entry(&hdev->msg_tx_queue, struct hci_msg, msg_l);
+	list_del(&msg->msg_l);
+
+	pr_debug("msg_tx_queue has a cmd to send\n");
+	while ((skb = skb_dequeue(&msg->msg_frags)) != NULL) {
+		r = nfc_llc_xmit_from_hci(hdev->llc, skb);
+		if (r < 0) {
+			kfree_skb(skb);
+			skb_queue_purge(&msg->msg_frags);
+			if (msg->cb)
+				msg->cb(msg->cb_context, NULL, r);
+			kfree(msg);
+			break;
+		}
+	}
+
+	if (r)
+		goto next_msg;
+
+	if (msg->wait_response == false) {
+		kfree(msg);
+		goto next_msg;
+	}
+
+	hdev->cmd_pending_msg = msg;
+	mod_timer(&hdev->cmd_timer, jiffies +
+		  msecs_to_jiffies(hdev->cmd_pending_msg->completion_delay));
+
+exit:
+	mutex_unlock(&hdev->msg_tx_mutex);
+}
+
+static void nfc_hci_msg_rx_work(struct work_struct *work)
+{
+	struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev,
+						msg_rx_work);
+	struct sk_buff *skb;
+	const struct hcp_message *message;
+	u8 pipe;
+	u8 type;
+	u8 instruction;
+
+	while ((skb = skb_dequeue(&hdev->msg_rx_queue)) != NULL) {
+		pipe = skb->data[0];
+		skb_pull(skb, NFC_HCI_HCP_PACKET_HEADER_LEN);
+		message = (struct hcp_message *)skb->data;
+		type = HCP_MSG_GET_TYPE(message->header);
+		instruction = HCP_MSG_GET_CMD(message->header);
+		skb_pull(skb, NFC_HCI_HCP_MESSAGE_HEADER_LEN);
+
+		nfc_hci_hcp_message_rx(hdev, pipe, type, instruction, skb);
+	}
+}
+
+static void __nfc_hci_cmd_completion(struct nfc_hci_dev *hdev, int err,
+				     struct sk_buff *skb)
+{
+	del_timer_sync(&hdev->cmd_timer);
+
+	if (hdev->cmd_pending_msg->cb)
+		hdev->cmd_pending_msg->cb(hdev->cmd_pending_msg->cb_context,
+					  skb, err);
+	else
+		kfree_skb(skb);
+
+	kfree(hdev->cmd_pending_msg);
+	hdev->cmd_pending_msg = NULL;
+
+	schedule_work(&hdev->msg_tx_work);
+}
+
+void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
+			   struct sk_buff *skb)
+{
+	mutex_lock(&hdev->msg_tx_mutex);
+
+	if (hdev->cmd_pending_msg == NULL) {
+		kfree_skb(skb);
+		goto exit;
+	}
+
+	__nfc_hci_cmd_completion(hdev, nfc_hci_result_to_errno(result), skb);
+
+exit:
+	mutex_unlock(&hdev->msg_tx_mutex);
+}
+
+void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
+			  struct sk_buff *skb)
+{
+	u8 status = NFC_HCI_ANY_OK;
+	const struct hci_create_pipe_resp *create_info;
+	const struct hci_delete_pipe_noti *delete_info;
+	const struct hci_all_pipe_cleared_noti *cleared_info;
+	u8 gate;
+
+	pr_debug("from pipe %x cmd %x\n", pipe, cmd);
+
+	if (pipe >= NFC_HCI_MAX_PIPES) {
+		status = NFC_HCI_ANY_E_NOK;
+		goto exit;
+	}
+
+	gate = hdev->pipes[pipe].gate;
+
+	switch (cmd) {
+	case NFC_HCI_ADM_NOTIFY_PIPE_CREATED:
+		if (skb->len != 5) {
+			status = NFC_HCI_ANY_E_NOK;
+			goto exit;
+		}
+		create_info = (struct hci_create_pipe_resp *)skb->data;
+
+		if (create_info->pipe >= NFC_HCI_MAX_PIPES) {
+			status = NFC_HCI_ANY_E_NOK;
+			goto exit;
+		}
+
+		/* Save the new created pipe and bind with local gate,
+		 * the description for skb->data[3] is destination gate id
+		 * but since we received this cmd from host controller, we
+		 * are the destination and it is our local gate
+		 */
+		hdev->gate2pipe[create_info->dest_gate] = create_info->pipe;
+		hdev->pipes[create_info->pipe].gate = create_info->dest_gate;
+		hdev->pipes[create_info->pipe].dest_host =
+							create_info->src_host;
+		break;
+	case NFC_HCI_ANY_OPEN_PIPE:
+		if (gate == NFC_HCI_INVALID_GATE) {
+			status = NFC_HCI_ANY_E_NOK;
+			goto exit;
+		}
+		break;
+	case NFC_HCI_ADM_NOTIFY_PIPE_DELETED:
+		if (skb->len != 1) {
+			status = NFC_HCI_ANY_E_NOK;
+			goto exit;
+		}
+		delete_info = (struct hci_delete_pipe_noti *)skb->data;
+
+		if (delete_info->pipe >= NFC_HCI_MAX_PIPES) {
+			status = NFC_HCI_ANY_E_NOK;
+			goto exit;
+		}
+
+		hdev->pipes[delete_info->pipe].gate = NFC_HCI_INVALID_GATE;
+		hdev->pipes[delete_info->pipe].dest_host = NFC_HCI_INVALID_HOST;
+		break;
+	case NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED:
+		if (skb->len != 1) {
+			status = NFC_HCI_ANY_E_NOK;
+			goto exit;
+		}
+		cleared_info = (struct hci_all_pipe_cleared_noti *)skb->data;
+
+		nfc_hci_reset_pipes_per_host(hdev, cleared_info->host);
+		break;
+	default:
+		pr_info("Discarded unknown cmd %x to gate %x\n", cmd, gate);
+		break;
+	}
+
+	if (hdev->ops->cmd_received)
+		hdev->ops->cmd_received(hdev, pipe, cmd, skb);
+
+exit:
+	nfc_hci_hcp_message_tx(hdev, pipe, NFC_HCI_HCP_RESPONSE,
+			       status, NULL, 0, NULL, NULL, 0);
+
+	kfree_skb(skb);
+}
+
+u32 nfc_hci_sak_to_protocol(u8 sak)
+{
+	switch (NFC_HCI_TYPE_A_SEL_PROT(sak)) {
+	case NFC_HCI_TYPE_A_SEL_PROT_MIFARE:
+		return NFC_PROTO_MIFARE_MASK;
+	case NFC_HCI_TYPE_A_SEL_PROT_ISO14443:
+		return NFC_PROTO_ISO14443_MASK;
+	case NFC_HCI_TYPE_A_SEL_PROT_DEP:
+		return NFC_PROTO_NFC_DEP_MASK;
+	case NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP:
+		return NFC_PROTO_ISO14443_MASK | NFC_PROTO_NFC_DEP_MASK;
+	default:
+		return 0xffffffff;
+	}
+}
+EXPORT_SYMBOL(nfc_hci_sak_to_protocol);
+
+int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
+{
+	struct nfc_target *targets;
+	struct sk_buff *atqa_skb = NULL;
+	struct sk_buff *sak_skb = NULL;
+	struct sk_buff *uid_skb = NULL;
+	int r;
+
+	pr_debug("from gate %d\n", gate);
+
+	targets = kzalloc(sizeof(struct nfc_target), GFP_KERNEL);
+	if (targets == NULL)
+		return -ENOMEM;
+
+	switch (gate) {
+	case NFC_HCI_RF_READER_A_GATE:
+		r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE,
+				      NFC_HCI_RF_READER_A_ATQA, &atqa_skb);
+		if (r < 0)
+			goto exit;
+
+		r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE,
+				      NFC_HCI_RF_READER_A_SAK, &sak_skb);
+		if (r < 0)
+			goto exit;
+
+		if (atqa_skb->len != 2 || sak_skb->len != 1) {
+			r = -EPROTO;
+			goto exit;
+		}
+
+		targets->supported_protocols =
+				nfc_hci_sak_to_protocol(sak_skb->data[0]);
+		if (targets->supported_protocols == 0xffffffff) {
+			r = -EPROTO;
+			goto exit;
+		}
+
+		targets->sens_res = be16_to_cpu(*(__be16 *)atqa_skb->data);
+		targets->sel_res = sak_skb->data[0];
+
+		r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE,
+				      NFC_HCI_RF_READER_A_UID, &uid_skb);
+		if (r < 0)
+			goto exit;
+
+		if (uid_skb->len == 0 || uid_skb->len > NFC_NFCID1_MAXSIZE) {
+			r = -EPROTO;
+			goto exit;
+		}
+
+		memcpy(targets->nfcid1, uid_skb->data, uid_skb->len);
+		targets->nfcid1_len = uid_skb->len;
+
+		if (hdev->ops->complete_target_discovered) {
+			r = hdev->ops->complete_target_discovered(hdev, gate,
+								  targets);
+			if (r < 0)
+				goto exit;
+		}
+		break;
+	case NFC_HCI_RF_READER_B_GATE:
+		targets->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
+		break;
+	default:
+		if (hdev->ops->target_from_gate)
+			r = hdev->ops->target_from_gate(hdev, gate, targets);
+		else
+			r = -EPROTO;
+		if (r < 0)
+			goto exit;
+
+		if (hdev->ops->complete_target_discovered) {
+			r = hdev->ops->complete_target_discovered(hdev, gate,
+								  targets);
+			if (r < 0)
+				goto exit;
+		}
+		break;
+	}
+
+	/* 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);
+
+exit:
+	kfree(targets);
+	kfree_skb(atqa_skb);
+	kfree_skb(sak_skb);
+	kfree_skb(uid_skb);
+
+	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)
+{
+	int r = 0;
+	u8 gate;
+
+	if (pipe >= NFC_HCI_MAX_PIPES) {
+		pr_err("Discarded event %x to invalid pipe %x\n", event, pipe);
+		goto exit;
+	}
+
+	gate = hdev->pipes[pipe].gate;
+	if (gate == NFC_HCI_INVALID_GATE) {
+		pr_err("Discarded event %x to unopened pipe %x\n", event, pipe);
+		goto exit;
+	}
+
+	if (hdev->ops->event_received) {
+		r = hdev->ops->event_received(hdev, pipe, event, skb);
+		if (r <= 0)
+			goto exit_noskb;
+	}
+
+	switch (event) {
+	case NFC_HCI_EVT_TARGET_DISCOVERED:
+		if (skb->len < 1) {	/* no status data? */
+			r = -EPROTO;
+			goto exit;
+		}
+
+		if (skb->data[0] == 3) {
+			/* TODO: Multiple targets in field, none activated
+			 * poll is supposedly stopped, but there is no
+			 * single target to activate, so nothing to report
+			 * up.
+			 * if we need to restart poll, we must save the
+			 * protocols from the initial poll and reuse here.
+			 */
+		}
+
+		if (skb->data[0] != 0) {
+			r = -EPROTO;
+			goto exit;
+		}
+
+		r = nfc_hci_target_discovered(hdev, gate);
+		break;
+	default:
+		pr_info("Discarded unknown event %x to gate %x\n", event, gate);
+		r = -EINVAL;
+		break;
+	}
+
+exit:
+	kfree_skb(skb);
+
+exit_noskb:
+	if (r)
+		nfc_hci_driver_failure(hdev, r);
+}
+
+static void nfc_hci_cmd_timeout(struct timer_list *t)
+{
+	struct nfc_hci_dev *hdev = from_timer(hdev, t, cmd_timer);
+
+	schedule_work(&hdev->msg_tx_work);
+}
+
+static int hci_dev_connect_gates(struct nfc_hci_dev *hdev, u8 gate_count,
+				 const struct nfc_hci_gate *gates)
+{
+	int r;
+	while (gate_count--) {
+		r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
+					 gates->gate, gates->pipe);
+		if (r < 0)
+			return r;
+		gates++;
+	}
+
+	return 0;
+}
+
+static int hci_dev_session_init(struct nfc_hci_dev *hdev)
+{
+	struct sk_buff *skb = NULL;
+	int r;
+
+	if (hdev->init_data.gates[0].gate != NFC_HCI_ADMIN_GATE)
+		return -EPROTO;
+
+	r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
+				 hdev->init_data.gates[0].gate,
+				 hdev->init_data.gates[0].pipe);
+	if (r < 0)
+		goto exit;
+
+	r = nfc_hci_get_param(hdev, NFC_HCI_ADMIN_GATE,
+			      NFC_HCI_ADMIN_SESSION_IDENTITY, &skb);
+	if (r < 0)
+		goto disconnect_all;
+
+	if (skb->len && skb->len == strlen(hdev->init_data.session_id) &&
+		(memcmp(hdev->init_data.session_id, skb->data,
+			   skb->len) == 0) && hdev->ops->load_session) {
+		/* Restore gate<->pipe table from some proprietary location. */
+
+		r = hdev->ops->load_session(hdev);
+
+		if (r < 0)
+			goto disconnect_all;
+	} else {
+
+		r = nfc_hci_disconnect_all_gates(hdev);
+		if (r < 0)
+			goto exit;
+
+		r = hci_dev_connect_gates(hdev, hdev->init_data.gate_count,
+					  hdev->init_data.gates);
+		if (r < 0)
+			goto disconnect_all;
+
+		r = nfc_hci_set_param(hdev, NFC_HCI_ADMIN_GATE,
+				NFC_HCI_ADMIN_SESSION_IDENTITY,
+				hdev->init_data.session_id,
+				strlen(hdev->init_data.session_id));
+	}
+	if (r == 0)
+		goto exit;
+
+disconnect_all:
+	nfc_hci_disconnect_all_gates(hdev);
+
+exit:
+	kfree_skb(skb);
+
+	return r;
+}
+
+static int hci_dev_version(struct nfc_hci_dev *hdev)
+{
+	int r;
+	struct sk_buff *skb;
+
+	r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE,
+			      NFC_HCI_ID_MGMT_VERSION_SW, &skb);
+	if (r == -EOPNOTSUPP) {
+		pr_info("Software/Hardware info not available\n");
+		return 0;
+	}
+	if (r < 0)
+		return r;
+
+	if (skb->len != 3) {
+		kfree_skb(skb);
+		return -EINVAL;
+	}
+
+	hdev->sw_romlib = (skb->data[0] & 0xf0) >> 4;
+	hdev->sw_patch = skb->data[0] & 0x0f;
+	hdev->sw_flashlib_major = skb->data[1];
+	hdev->sw_flashlib_minor = skb->data[2];
+
+	kfree_skb(skb);
+
+	r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE,
+			      NFC_HCI_ID_MGMT_VERSION_HW, &skb);
+	if (r < 0)
+		return r;
+
+	if (skb->len != 3) {
+		kfree_skb(skb);
+		return -EINVAL;
+	}
+
+	hdev->hw_derivative = (skb->data[0] & 0xe0) >> 5;
+	hdev->hw_version = skb->data[0] & 0x1f;
+	hdev->hw_mpw = (skb->data[1] & 0xc0) >> 6;
+	hdev->hw_software = skb->data[1] & 0x3f;
+	hdev->hw_bsid = skb->data[2];
+
+	kfree_skb(skb);
+
+	pr_info("SOFTWARE INFO:\n");
+	pr_info("RomLib         : %d\n", hdev->sw_romlib);
+	pr_info("Patch          : %d\n", hdev->sw_patch);
+	pr_info("FlashLib Major : %d\n", hdev->sw_flashlib_major);
+	pr_info("FlashLib Minor : %d\n", hdev->sw_flashlib_minor);
+	pr_info("HARDWARE INFO:\n");
+	pr_info("Derivative     : %d\n", hdev->hw_derivative);
+	pr_info("HW Version     : %d\n", hdev->hw_version);
+	pr_info("#MPW           : %d\n", hdev->hw_mpw);
+	pr_info("Software       : %d\n", hdev->hw_software);
+	pr_info("BSID Version   : %d\n", hdev->hw_bsid);
+
+	return 0;
+}
+
+static int hci_dev_up(struct nfc_dev *nfc_dev)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+	int r = 0;
+
+	if (hdev->ops->open) {
+		r = hdev->ops->open(hdev);
+		if (r < 0)
+			return r;
+	}
+
+	r = nfc_llc_start(hdev->llc);
+	if (r < 0)
+		goto exit_close;
+
+	r = hci_dev_session_init(hdev);
+	if (r < 0)
+		goto exit_llc;
+
+	r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
+			       NFC_HCI_EVT_END_OPERATION, NULL, 0);
+	if (r < 0)
+		goto exit_llc;
+
+	if (hdev->ops->hci_ready) {
+		r = hdev->ops->hci_ready(hdev);
+		if (r < 0)
+			goto exit_llc;
+	}
+
+	r = hci_dev_version(hdev);
+	if (r < 0)
+		goto exit_llc;
+
+	return 0;
+
+exit_llc:
+	nfc_llc_stop(hdev->llc);
+
+exit_close:
+	if (hdev->ops->close)
+		hdev->ops->close(hdev);
+
+	return r;
+}
+
+static int hci_dev_down(struct nfc_dev *nfc_dev)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	nfc_llc_stop(hdev->llc);
+
+	if (hdev->ops->close)
+		hdev->ops->close(hdev);
+
+	nfc_hci_reset_pipes(hdev);
+
+	return 0;
+}
+
+static int hci_start_poll(struct nfc_dev *nfc_dev,
+			  u32 im_protocols, u32 tm_protocols)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	if (hdev->ops->start_poll)
+		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);
+}
+
+static void hci_stop_poll(struct nfc_dev *nfc_dev)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	if (hdev->ops->stop_poll)
+		hdev->ops->stop_poll(hdev);
+	else
+		nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
+				   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 0;
+
+	return hdev->ops->dep_link_up(hdev, target, comm_mode,
+				      gb, gb_len);
+}
+
+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 0;
+
+	return hdev->ops->dep_link_down(hdev);
+}
+
+static int hci_activate_target(struct nfc_dev *nfc_dev,
+			       struct nfc_target *target, u32 protocol)
+{
+	return 0;
+}
+
+static void hci_deactivate_target(struct nfc_dev *nfc_dev,
+				  struct nfc_target *target,
+				  u8 mode)
+{
+}
+
+#define HCI_CB_TYPE_TRANSCEIVE 1
+
+static void hci_transceive_cb(void *context, struct sk_buff *skb, int err)
+{
+	struct nfc_hci_dev *hdev = context;
+
+	switch (hdev->async_cb_type) {
+	case HCI_CB_TYPE_TRANSCEIVE:
+		/*
+		 * TODO: Check RF Error indicator to make sure data is valid.
+		 * It seems that HCI cmd can complete without error, but data
+		 * can be invalid if an RF error occurred? Ignore for now.
+		 */
+		if (err == 0)
+			skb_trim(skb, skb->len - 1); /* RF Err ind */
+
+		hdev->async_cb(hdev->async_cb_context, skb, err);
+		break;
+	default:
+		if (err == 0)
+			kfree_skb(skb);
+		break;
+	}
+}
+
+static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
+			  struct sk_buff *skb, data_exchange_cb_t cb,
+			  void *cb_context)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+	int r;
+
+	pr_debug("target_idx=%d\n", target->idx);
+
+	switch (target->hci_reader_gate) {
+	case NFC_HCI_RF_READER_A_GATE:
+	case NFC_HCI_RF_READER_B_GATE:
+		if (hdev->ops->im_transceive) {
+			r = hdev->ops->im_transceive(hdev, target, skb, cb,
+						     cb_context);
+			if (r <= 0)	/* handled */
+				break;
+		}
+
+		*(u8 *)skb_push(skb, 1) = 0;	/* CTR, see spec:10.2.2.1 */
+
+		hdev->async_cb_type = HCI_CB_TYPE_TRANSCEIVE;
+		hdev->async_cb = cb;
+		hdev->async_cb_context = cb_context;
+
+		r = nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
+					   NFC_HCI_WR_XCHG_DATA, skb->data,
+					   skb->len, hci_transceive_cb, hdev);
+		break;
+	default:
+		if (hdev->ops->im_transceive) {
+			r = hdev->ops->im_transceive(hdev, target, skb, cb,
+						     cb_context);
+			if (r == 1)
+				r = -ENOTSUPP;
+		} else {
+			r = -ENOTSUPP;
+		}
+		break;
+	}
+
+	kfree_skb(skb);
+
+	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) {
+		kfree_skb(skb);
+		return -ENOTSUPP;
+	}
+
+	return hdev->ops->tm_send(hdev, skb);
+}
+
+static int hci_check_presence(struct nfc_dev *nfc_dev,
+			      struct nfc_target *target)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	if (!hdev->ops->check_presence)
+		return 0;
+
+	return hdev->ops->check_presence(hdev, target);
+}
+
+static int hci_discover_se(struct nfc_dev *nfc_dev)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	if (hdev->ops->discover_se)
+		return hdev->ops->discover_se(hdev);
+
+	return 0;
+}
+
+static int hci_enable_se(struct nfc_dev *nfc_dev, u32 se_idx)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	if (hdev->ops->enable_se)
+		return hdev->ops->enable_se(hdev, se_idx);
+
+	return 0;
+}
+
+static int hci_disable_se(struct nfc_dev *nfc_dev, u32 se_idx)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	if (hdev->ops->disable_se)
+		return hdev->ops->disable_se(hdev, se_idx);
+
+	return 0;
+}
+
+static int hci_se_io(struct nfc_dev *nfc_dev, u32 se_idx,
+		     u8 *apdu, size_t apdu_length,
+		     se_io_cb_t cb, void *cb_context)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	if (hdev->ops->se_io)
+		return hdev->ops->se_io(hdev, se_idx, apdu,
+					apdu_length, cb, cb_context);
+
+	return 0;
+}
+
+static void nfc_hci_failure(struct nfc_hci_dev *hdev, int err)
+{
+	mutex_lock(&hdev->msg_tx_mutex);
+
+	if (hdev->cmd_pending_msg == NULL) {
+		nfc_driver_failure(hdev->ndev, err);
+		goto exit;
+	}
+
+	__nfc_hci_cmd_completion(hdev, err, NULL);
+
+exit:
+	mutex_unlock(&hdev->msg_tx_mutex);
+}
+
+static void nfc_hci_llc_failure(struct nfc_hci_dev *hdev, int err)
+{
+	nfc_hci_failure(hdev, err);
+}
+
+static void nfc_hci_recv_from_llc(struct nfc_hci_dev *hdev, struct sk_buff *skb)
+{
+	struct hcp_packet *packet;
+	u8 type;
+	u8 instruction;
+	struct sk_buff *hcp_skb;
+	u8 pipe;
+	struct sk_buff *frag_skb;
+	int msg_len;
+
+	packet = (struct hcp_packet *)skb->data;
+	if ((packet->header & ~NFC_HCI_FRAGMENT) == 0) {
+		skb_queue_tail(&hdev->rx_hcp_frags, skb);
+		return;
+	}
+
+	/* it's the last fragment. Does it need re-aggregation? */
+	if (skb_queue_len(&hdev->rx_hcp_frags)) {
+		pipe = packet->header & NFC_HCI_FRAGMENT;
+		skb_queue_tail(&hdev->rx_hcp_frags, skb);
+
+		msg_len = 0;
+		skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) {
+			msg_len += (frag_skb->len -
+				    NFC_HCI_HCP_PACKET_HEADER_LEN);
+		}
+
+		hcp_skb = nfc_alloc_recv_skb(NFC_HCI_HCP_PACKET_HEADER_LEN +
+					     msg_len, GFP_KERNEL);
+		if (hcp_skb == NULL) {
+			nfc_hci_failure(hdev, -ENOMEM);
+			return;
+		}
+
+		skb_put_u8(hcp_skb, pipe);
+
+		skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) {
+			msg_len = frag_skb->len - NFC_HCI_HCP_PACKET_HEADER_LEN;
+			skb_put_data(hcp_skb,
+				     frag_skb->data + NFC_HCI_HCP_PACKET_HEADER_LEN,
+				     msg_len);
+		}
+
+		skb_queue_purge(&hdev->rx_hcp_frags);
+	} else {
+		packet->header &= NFC_HCI_FRAGMENT;
+		hcp_skb = skb;
+	}
+
+	/* if this is a response, dispatch immediately to
+	 * unblock waiting cmd context. Otherwise, enqueue to dispatch
+	 * in separate context where handler can also execute command.
+	 */
+	packet = (struct hcp_packet *)hcp_skb->data;
+	type = HCP_MSG_GET_TYPE(packet->message.header);
+	if (type == NFC_HCI_HCP_RESPONSE) {
+		pipe = packet->header;
+		instruction = HCP_MSG_GET_CMD(packet->message.header);
+		skb_pull(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN +
+			 NFC_HCI_HCP_MESSAGE_HEADER_LEN);
+		nfc_hci_hcp_message_rx(hdev, pipe, type, instruction, hcp_skb);
+	} else {
+		skb_queue_tail(&hdev->msg_rx_queue, hcp_skb);
+		schedule_work(&hdev->msg_rx_work);
+	}
+}
+
+static int hci_fw_download(struct nfc_dev *nfc_dev, const char *firmware_name)
+{
+	struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+	if (!hdev->ops->fw_download)
+		return -ENOTSUPP;
+
+	return hdev->ops->fw_download(hdev, firmware_name);
+}
+
+static const struct nfc_ops hci_nfc_ops = {
+	.dev_up = hci_dev_up,
+	.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,
+	.fw_download = hci_fw_download,
+	.discover_se = hci_discover_se,
+	.enable_se = hci_enable_se,
+	.disable_se = hci_disable_se,
+	.se_io = hci_se_io,
+};
+
+struct nfc_hci_dev *nfc_hci_allocate_device(const struct nfc_hci_ops *ops,
+					    struct nfc_hci_init_data *init_data,
+					    unsigned long quirks,
+					    u32 protocols,
+					    const char *llc_name,
+					    int tx_headroom,
+					    int tx_tailroom,
+					    int max_link_payload)
+{
+	struct nfc_hci_dev *hdev;
+
+	if (ops->xmit == NULL)
+		return NULL;
+
+	if (protocols == 0)
+		return NULL;
+
+	hdev = kzalloc(sizeof(struct nfc_hci_dev), GFP_KERNEL);
+	if (hdev == NULL)
+		return NULL;
+
+	hdev->llc = nfc_llc_allocate(llc_name, hdev, ops->xmit,
+				     nfc_hci_recv_from_llc, tx_headroom,
+				     tx_tailroom, nfc_hci_llc_failure);
+	if (hdev->llc == NULL) {
+		kfree(hdev);
+		return NULL;
+	}
+
+	hdev->ndev = nfc_allocate_device(&hci_nfc_ops, protocols,
+					 tx_headroom + HCI_CMDS_HEADROOM,
+					 tx_tailroom);
+	if (!hdev->ndev) {
+		nfc_llc_free(hdev->llc);
+		kfree(hdev);
+		return NULL;
+	}
+
+	hdev->ops = ops;
+	hdev->max_data_link_payload = max_link_payload;
+	hdev->init_data = *init_data;
+
+	nfc_set_drvdata(hdev->ndev, hdev);
+
+	nfc_hci_reset_pipes(hdev);
+
+	hdev->quirks = quirks;
+
+	return hdev;
+}
+EXPORT_SYMBOL(nfc_hci_allocate_device);
+
+void nfc_hci_free_device(struct nfc_hci_dev *hdev)
+{
+	nfc_free_device(hdev->ndev);
+	nfc_llc_free(hdev->llc);
+	kfree(hdev);
+}
+EXPORT_SYMBOL(nfc_hci_free_device);
+
+int nfc_hci_register_device(struct nfc_hci_dev *hdev)
+{
+	mutex_init(&hdev->msg_tx_mutex);
+
+	INIT_LIST_HEAD(&hdev->msg_tx_queue);
+
+	INIT_WORK(&hdev->msg_tx_work, nfc_hci_msg_tx_work);
+
+	timer_setup(&hdev->cmd_timer, nfc_hci_cmd_timeout, 0);
+
+	skb_queue_head_init(&hdev->rx_hcp_frags);
+
+	INIT_WORK(&hdev->msg_rx_work, nfc_hci_msg_rx_work);
+
+	skb_queue_head_init(&hdev->msg_rx_queue);
+
+	return nfc_register_device(hdev->ndev);
+}
+EXPORT_SYMBOL(nfc_hci_register_device);
+
+void nfc_hci_unregister_device(struct nfc_hci_dev *hdev)
+{
+	struct hci_msg *msg, *n;
+
+	mutex_lock(&hdev->msg_tx_mutex);
+
+	if (hdev->cmd_pending_msg) {
+		if (hdev->cmd_pending_msg->cb)
+			hdev->cmd_pending_msg->cb(
+					     hdev->cmd_pending_msg->cb_context,
+					     NULL, -ESHUTDOWN);
+		kfree(hdev->cmd_pending_msg);
+		hdev->cmd_pending_msg = NULL;
+	}
+
+	hdev->shutting_down = true;
+
+	mutex_unlock(&hdev->msg_tx_mutex);
+
+	del_timer_sync(&hdev->cmd_timer);
+	cancel_work_sync(&hdev->msg_tx_work);
+
+	cancel_work_sync(&hdev->msg_rx_work);
+
+	nfc_unregister_device(hdev->ndev);
+
+	skb_queue_purge(&hdev->rx_hcp_frags);
+	skb_queue_purge(&hdev->msg_rx_queue);
+
+	list_for_each_entry_safe(msg, n, &hdev->msg_tx_queue, msg_l) {
+		list_del(&msg->msg_l);
+		skb_queue_purge(&msg->msg_frags);
+		kfree(msg);
+	}
+}
+EXPORT_SYMBOL(nfc_hci_unregister_device);
+
+void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata)
+{
+	hdev->clientdata = clientdata;
+}
+EXPORT_SYMBOL(nfc_hci_set_clientdata);
+
+void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev)
+{
+	return hdev->clientdata;
+}
+EXPORT_SYMBOL(nfc_hci_get_clientdata);
+
+void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err)
+{
+	nfc_hci_failure(hdev, err);
+}
+EXPORT_SYMBOL(nfc_hci_driver_failure);
+
+void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb)
+{
+	nfc_llc_rcv_from_drv(hdev->llc, skb);
+}
+EXPORT_SYMBOL(nfc_hci_recv_frame);
+
+static int __init nfc_hci_init(void)
+{
+	return nfc_llc_init();
+}
+
+static void __exit nfc_hci_exit(void)
+{
+	nfc_llc_exit();
+}
+
+subsys_initcall(nfc_hci_init);
+module_exit(nfc_hci_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("NFC HCI Core");