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, 1918 insertions, 0 deletions

diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
new file mode 100644
index 000000000..1fc339084
--- /dev/null
+++ b/net/nfc/netlink.c
@@ -0,0 +1,1918 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2011 Instituto Nokia de Tecnologia
+ *
+ * Authors:
+ *    Lauro Ramos Venancio <lauro.venancio@openbossa.org>
+ *    Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
+ *
+ * Vendor commands implementation based on net/wireless/nl80211.c
+ * which is:
+ *
+ * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014  Intel Mobile Communications GmbH
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
+
+#include <net/genetlink.h>
+#include <linux/nfc.h>
+#include <linux/slab.h>
+
+#include "nfc.h"
+#include "llcp.h"
+
+static const struct genl_multicast_group nfc_genl_mcgrps[] = {
+	{ .name = NFC_GENL_MCAST_EVENT_NAME, },
+};
+
+static struct genl_family nfc_genl_family;
+static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = {
+	[NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 },
+	[NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING,
+				.len = NFC_DEVICE_NAME_MAXSIZE },
+	[NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 },
+	[NFC_ATTR_TARGET_INDEX] = { .type = NLA_U32 },
+	[NFC_ATTR_COMM_MODE] = { .type = NLA_U8 },
+	[NFC_ATTR_RF_MODE] = { .type = NLA_U8 },
+	[NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 },
+	[NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 },
+	[NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 },
+	[NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 },
+	[NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 },
+	[NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 },
+	[NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED },
+	[NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING,
+				     .len = NFC_FIRMWARE_NAME_MAXSIZE },
+	[NFC_ATTR_SE_INDEX] = { .type = NLA_U32 },
+	[NFC_ATTR_SE_APDU] = { .type = NLA_BINARY },
+	[NFC_ATTR_VENDOR_ID] = { .type = NLA_U32 },
+	[NFC_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
+	[NFC_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
+
+};
+
+static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = {
+	[NFC_SDP_ATTR_URI] = { .type = NLA_STRING,
+			       .len = U8_MAX - 4 },
+	[NFC_SDP_ATTR_SAP] = { .type = NLA_U8 },
+};
+
+static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
+				struct netlink_callback *cb, int flags)
+{
+	void *hdr;
+
+	hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+			  &nfc_genl_family, flags, NFC_CMD_GET_TARGET);
+	if (!hdr)
+		return -EMSGSIZE;
+
+	genl_dump_check_consistent(cb, hdr);
+
+	if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) ||
+	    nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) ||
+	    nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) ||
+	    nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res))
+		goto nla_put_failure;
+	if (target->nfcid1_len > 0 &&
+	    nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len,
+		    target->nfcid1))
+		goto nla_put_failure;
+	if (target->sensb_res_len > 0 &&
+	    nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len,
+		    target->sensb_res))
+		goto nla_put_failure;
+	if (target->sensf_res_len > 0 &&
+	    nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len,
+		    target->sensf_res))
+		goto nla_put_failure;
+
+	if (target->is_iso15693) {
+		if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID,
+			       target->iso15693_dsfid) ||
+		    nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID,
+			    sizeof(target->iso15693_uid), target->iso15693_uid))
+			goto nla_put_failure;
+	}
+
+	genlmsg_end(msg, hdr);
+	return 0;
+
+nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb)
+{
+	const struct genl_dumpit_info *info = genl_dumpit_info(cb);
+	struct nfc_dev *dev;
+	u32 idx;
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
+		return ERR_PTR(-EINVAL);
+
+	idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+	dev = nfc_get_device(idx);
+	if (!dev)
+		return ERR_PTR(-ENODEV);
+
+	return dev;
+}
+
+static int nfc_genl_dump_targets(struct sk_buff *skb,
+				 struct netlink_callback *cb)
+{
+	int i = cb->args[0];
+	struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
+	int rc;
+
+	if (!dev) {
+		dev = __get_device_from_cb(cb);
+		if (IS_ERR(dev))
+			return PTR_ERR(dev);
+
+		cb->args[1] = (long) dev;
+	}
+
+	device_lock(&dev->dev);
+
+	cb->seq = dev->targets_generation;
+
+	while (i < dev->n_targets) {
+		rc = nfc_genl_send_target(skb, &dev->targets[i], cb,
+					  NLM_F_MULTI);
+		if (rc < 0)
+			break;
+
+		i++;
+	}
+
+	device_unlock(&dev->dev);
+
+	cb->args[0] = i;
+
+	return skb->len;
+}
+
+static int nfc_genl_dump_targets_done(struct netlink_callback *cb)
+{
+	struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
+
+	if (dev)
+		nfc_put_device(dev);
+
+	return 0;
+}
+
+int nfc_genl_targets_found(struct nfc_dev *dev)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	dev->genl_data.poll_req_portid = 0;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_EVENT_TARGETS_FOUND);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_EVENT_TARGET_LOST);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
+	    nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_EVENT_TM_ACTIVATED);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
+		goto nla_put_failure;
+	if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+int nfc_genl_tm_deactivated(struct nfc_dev *dev)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_EVENT_TM_DEACTIVATED);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+static int nfc_genl_setup_device_added(struct nfc_dev *dev, struct sk_buff *msg)
+{
+	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_RF_MODE, dev->rf_mode))
+		return -1;
+	return 0;
+}
+
+int nfc_genl_device_added(struct nfc_dev *dev)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_EVENT_DEVICE_ADDED);
+	if (!hdr)
+		goto free_msg;
+
+	if (nfc_genl_setup_device_added(dev, msg))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+int nfc_genl_device_removed(struct nfc_dev *dev)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_EVENT_DEVICE_REMOVED);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list)
+{
+	struct sk_buff *msg;
+	struct nlattr *sdp_attr, *uri_attr;
+	struct nfc_llcp_sdp_tlv *sdres;
+	struct hlist_node *n;
+	void *hdr;
+	int rc = -EMSGSIZE;
+	int i;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_EVENT_LLC_SDRES);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
+		goto nla_put_failure;
+
+	sdp_attr = nla_nest_start_noflag(msg, NFC_ATTR_LLC_SDP);
+	if (sdp_attr == NULL) {
+		rc = -ENOMEM;
+		goto nla_put_failure;
+	}
+
+	i = 1;
+	hlist_for_each_entry_safe(sdres, n, sdres_list, node) {
+		pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap);
+
+		uri_attr = nla_nest_start_noflag(msg, i++);
+		if (uri_attr == NULL) {
+			rc = -ENOMEM;
+			goto nla_put_failure;
+		}
+
+		if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap))
+			goto nla_put_failure;
+
+		if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri))
+			goto nla_put_failure;
+
+		nla_nest_end(msg, uri_attr);
+
+		hlist_del(&sdres->node);
+
+		nfc_llcp_free_sdp_tlv(sdres);
+	}
+
+	nla_nest_end(msg, sdp_attr);
+
+	genlmsg_end(msg, hdr);
+
+	return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+
+	nfc_llcp_free_sdp_tlv_list(sdres_list);
+
+	return rc;
+}
+
+int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_EVENT_SE_ADDED);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+	    nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
+	    nla_put_u8(msg, NFC_ATTR_SE_TYPE, type))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_EVENT_SE_REMOVED);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+	    nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx,
+			    struct nfc_evt_transaction *evt_transaction)
+{
+	struct nfc_se *se;
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_EVENT_SE_TRANSACTION);
+	if (!hdr)
+		goto free_msg;
+
+	se = nfc_find_se(dev, se_idx);
+	if (!se)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+	    nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
+	    nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) ||
+	    nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len,
+		    evt_transaction->aid) ||
+	    nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len,
+		    evt_transaction->params))
+		goto nla_put_failure;
+
+	/* evt_transaction is no more used */
+	devm_kfree(&dev->dev, evt_transaction);
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	/* evt_transaction is no more used */
+	devm_kfree(&dev->dev, evt_transaction);
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx)
+{
+	const struct nfc_se *se;
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_EVENT_SE_CONNECTIVITY);
+	if (!hdr)
+		goto free_msg;
+
+	se = nfc_find_se(dev, se_idx);
+	if (!se)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+	    nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
+	    nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
+				u32 portid, u32 seq,
+				struct netlink_callback *cb,
+				int flags)
+{
+	void *hdr;
+
+	hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
+			  NFC_CMD_GET_DEVICE);
+	if (!hdr)
+		return -EMSGSIZE;
+
+	if (cb)
+		genl_dump_check_consistent(cb, hdr);
+
+	if (nfc_genl_setup_device_added(dev, msg))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+	return 0;
+
+nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+static int nfc_genl_dump_devices(struct sk_buff *skb,
+				 struct netlink_callback *cb)
+{
+	struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
+	struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
+	bool first_call = false;
+
+	if (!iter) {
+		first_call = true;
+		iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
+		if (!iter)
+			return -ENOMEM;
+		cb->args[0] = (long) iter;
+	}
+
+	mutex_lock(&nfc_devlist_mutex);
+
+	cb->seq = nfc_devlist_generation;
+
+	if (first_call) {
+		nfc_device_iter_init(iter);
+		dev = nfc_device_iter_next(iter);
+	}
+
+	while (dev) {
+		int rc;
+
+		rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid,
+					  cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
+		if (rc < 0)
+			break;
+
+		dev = nfc_device_iter_next(iter);
+	}
+
+	mutex_unlock(&nfc_devlist_mutex);
+
+	cb->args[1] = (long) dev;
+
+	return skb->len;
+}
+
+static int nfc_genl_dump_devices_done(struct netlink_callback *cb)
+{
+	struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
+
+	if (iter) {
+		nfc_device_iter_exit(iter);
+		kfree(iter);
+	}
+
+	return 0;
+}
+
+int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
+			       u8 comm_mode, u8 rf_mode)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	pr_debug("DEP link is up\n");
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
+		goto nla_put_failure;
+	if (rf_mode == NFC_RF_INITIATOR &&
+	    nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
+		goto nla_put_failure;
+	if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) ||
+	    nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	dev->dep_link_up = true;
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+int nfc_genl_dep_link_down_event(struct nfc_dev *dev)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	pr_debug("DEP link is down\n");
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_CMD_DEP_LINK_DOWN);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info)
+{
+	struct sk_buff *msg;
+	struct nfc_dev *dev;
+	u32 idx;
+	int rc = -ENOBUFS;
+
+	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;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg) {
+		rc = -ENOMEM;
+		goto out_putdev;
+	}
+
+	rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq,
+				  NULL, 0);
+	if (rc < 0)
+		goto out_free;
+
+	nfc_put_device(dev);
+
+	return genlmsg_reply(msg, info);
+
+out_free:
+	nlmsg_free(msg);
+out_putdev:
+	nfc_put_device(dev);
+	return rc;
+}
+
+static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	int rc;
+	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;
+
+	rc = nfc_dev_up(dev);
+
+	nfc_put_device(dev);
+	return rc;
+}
+
+static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	int rc;
+	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;
+
+	rc = nfc_dev_down(dev);
+
+	nfc_put_device(dev);
+	return rc;
+}
+
+static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	int rc;
+	u32 idx;
+	u32 im_protocols = 0, tm_protocols = 0;
+
+	pr_debug("Poll start\n");
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+	    ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] &&
+	      !info->attrs[NFC_ATTR_PROTOCOLS]) &&
+	      !info->attrs[NFC_ATTR_TM_PROTOCOLS]))
+		return -EINVAL;
+
+	idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+	if (info->attrs[NFC_ATTR_TM_PROTOCOLS])
+		tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]);
+
+	if (info->attrs[NFC_ATTR_IM_PROTOCOLS])
+		im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]);
+	else if (info->attrs[NFC_ATTR_PROTOCOLS])
+		im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
+
+	dev = nfc_get_device(idx);
+	if (!dev)
+		return -ENODEV;
+
+	mutex_lock(&dev->genl_data.genl_data_mutex);
+
+	rc = nfc_start_poll(dev, im_protocols, tm_protocols);
+	if (!rc)
+		dev->genl_data.poll_req_portid = info->snd_portid;
+
+	mutex_unlock(&dev->genl_data.genl_data_mutex);
+
+	nfc_put_device(dev);
+	return rc;
+}
+
+static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	int rc;
+	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);
+
+	if (!dev->polling) {
+		device_unlock(&dev->dev);
+		nfc_put_device(dev);
+		return -EINVAL;
+	}
+
+	device_unlock(&dev->dev);
+
+	mutex_lock(&dev->genl_data.genl_data_mutex);
+
+	if (dev->genl_data.poll_req_portid != info->snd_portid) {
+		rc = -EBUSY;
+		goto out;
+	}
+
+	rc = nfc_stop_poll(dev);
+	dev->genl_data.poll_req_portid = 0;
+
+out:
+	mutex_unlock(&dev->genl_data.genl_data_mutex);
+	nfc_put_device(dev);
+	return rc;
+}
+
+static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	u32 device_idx, target_idx, protocol;
+	int rc;
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+	    !info->attrs[NFC_ATTR_TARGET_INDEX] ||
+	    !info->attrs[NFC_ATTR_PROTOCOLS])
+		return -EINVAL;
+
+	device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+	dev = nfc_get_device(device_idx);
+	if (!dev)
+		return -ENODEV;
+
+	target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
+	protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
+
+	nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
+	rc = nfc_activate_target(dev, target_idx, protocol);
+
+	nfc_put_device(dev);
+	return rc;
+}
+
+static int nfc_genl_deactivate_target(struct sk_buff *skb,
+				      struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	u32 device_idx, target_idx;
+	int rc;
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+	    !info->attrs[NFC_ATTR_TARGET_INDEX])
+		return -EINVAL;
+
+	device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+	dev = nfc_get_device(device_idx);
+	if (!dev)
+		return -ENODEV;
+
+	target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
+
+	rc = nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
+
+	nfc_put_device(dev);
+	return rc;
+}
+
+static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	int rc, tgt_idx;
+	u32 idx;
+	u8 comm;
+
+	pr_debug("DEP link up\n");
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+	    !info->attrs[NFC_ATTR_COMM_MODE])
+		return -EINVAL;
+
+	idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+	if (!info->attrs[NFC_ATTR_TARGET_INDEX])
+		tgt_idx = NFC_TARGET_IDX_ANY;
+	else
+		tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
+
+	comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]);
+
+	if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE)
+		return -EINVAL;
+
+	dev = nfc_get_device(idx);
+	if (!dev)
+		return -ENODEV;
+
+	rc = nfc_dep_link_up(dev, tgt_idx, comm);
+
+	nfc_put_device(dev);
+
+	return rc;
+}
+
+static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	int rc;
+	u32 idx;
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+	    !info->attrs[NFC_ATTR_TARGET_INDEX])
+		return -EINVAL;
+
+	idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+	dev = nfc_get_device(idx);
+	if (!dev)
+		return -ENODEV;
+
+	rc = nfc_dep_link_down(dev);
+
+	nfc_put_device(dev);
+	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;
+
+	genlmsg_end(msg, hdr);
+	return 0;
+
+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] ||
+	    !info->attrs[NFC_ATTR_FIRMWARE_NAME])
+		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) {
+		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 int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	struct nfc_llcp_local *local;
+	struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1];
+	u32 idx;
+	u8 tid;
+	char *uri;
+	int rc = 0, rem;
+	size_t uri_len, tlvs_len;
+	struct hlist_head sdreq_list;
+	struct nfc_llcp_sdp_tlv *sdreq;
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+	    !info->attrs[NFC_ATTR_LLC_SDP])
+		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);
+
+	if (dev->dep_link_up == false) {
+		rc = -ENOLINK;
+		goto exit;
+	}
+
+	local = nfc_llcp_find_local(dev);
+	if (!local) {
+		rc = -ENODEV;
+		goto exit;
+	}
+
+	INIT_HLIST_HEAD(&sdreq_list);
+
+	tlvs_len = 0;
+
+	nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) {
+		rc = nla_parse_nested_deprecated(sdp_attrs, NFC_SDP_ATTR_MAX,
+						 attr, nfc_sdp_genl_policy,
+						 info->extack);
+
+		if (rc != 0) {
+			rc = -EINVAL;
+			goto exit;
+		}
+
+		if (!sdp_attrs[NFC_SDP_ATTR_URI])
+			continue;
+
+		uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]);
+		if (uri_len == 0)
+			continue;
+
+		uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]);
+		if (uri == NULL || *uri == 0)
+			continue;
+
+		tid = local->sdreq_next_tid++;
+
+		sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len);
+		if (sdreq == NULL) {
+			rc = -ENOMEM;
+			goto exit;
+		}
+
+		tlvs_len += sdreq->tlv_len;
+
+		hlist_add_head(&sdreq->node, &sdreq_list);
+	}
+
+	if (hlist_empty(&sdreq_list)) {
+		rc = -EINVAL;
+		goto exit;
+	}
+
+	rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len);
+exit:
+	device_unlock(&dev->dev);
+
+	nfc_put_device(dev);
+
+	return rc;
+}
+
+static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	int rc;
+	u32 idx;
+	char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_FIRMWARE_NAME])
+		return -EINVAL;
+
+	idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+	dev = nfc_get_device(idx);
+	if (!dev)
+		return -ENODEV;
+
+	nla_strscpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME],
+		    sizeof(firmware_name));
+
+	rc = nfc_fw_download(dev, firmware_name);
+
+	nfc_put_device(dev);
+	return rc;
+}
+
+int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name,
+			      u32 result)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
+	if (!msg)
+		return -ENOMEM;
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_CMD_FW_DOWNLOAD);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) ||
+	    nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) ||
+	    nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
+
+	return 0;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	return -EMSGSIZE;
+}
+
+static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	int rc;
+	u32 idx, se_idx;
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+	    !info->attrs[NFC_ATTR_SE_INDEX])
+		return -EINVAL;
+
+	idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+	se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
+
+	dev = nfc_get_device(idx);
+	if (!dev)
+		return -ENODEV;
+
+	rc = nfc_enable_se(dev, se_idx);
+
+	nfc_put_device(dev);
+	return rc;
+}
+
+static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	int rc;
+	u32 idx, se_idx;
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+	    !info->attrs[NFC_ATTR_SE_INDEX])
+		return -EINVAL;
+
+	idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+	se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
+
+	dev = nfc_get_device(idx);
+	if (!dev)
+		return -ENODEV;
+
+	rc = nfc_disable_se(dev, se_idx);
+
+	nfc_put_device(dev);
+	return rc;
+}
+
+static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev,
+				u32 portid, u32 seq,
+				struct netlink_callback *cb,
+				int flags)
+{
+	void *hdr;
+	struct nfc_se *se, *n;
+
+	list_for_each_entry_safe(se, n, &dev->secure_elements, list) {
+		hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
+				  NFC_CMD_GET_SE);
+		if (!hdr)
+			goto nla_put_failure;
+
+		if (cb)
+			genl_dump_check_consistent(cb, hdr);
+
+		if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+		    nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) ||
+		    nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
+			goto nla_put_failure;
+
+		genlmsg_end(msg, hdr);
+	}
+
+	return 0;
+
+nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+static int nfc_genl_dump_ses(struct sk_buff *skb,
+				 struct netlink_callback *cb)
+{
+	struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
+	struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
+	bool first_call = false;
+
+	if (!iter) {
+		first_call = true;
+		iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
+		if (!iter)
+			return -ENOMEM;
+		cb->args[0] = (long) iter;
+	}
+
+	mutex_lock(&nfc_devlist_mutex);
+
+	cb->seq = nfc_devlist_generation;
+
+	if (first_call) {
+		nfc_device_iter_init(iter);
+		dev = nfc_device_iter_next(iter);
+	}
+
+	while (dev) {
+		int rc;
+
+		rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid,
+					  cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
+		if (rc < 0)
+			break;
+
+		dev = nfc_device_iter_next(iter);
+	}
+
+	mutex_unlock(&nfc_devlist_mutex);
+
+	cb->args[1] = (long) dev;
+
+	return skb->len;
+}
+
+static int nfc_genl_dump_ses_done(struct netlink_callback *cb)
+{
+	struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
+
+	if (iter) {
+		nfc_device_iter_exit(iter);
+		kfree(iter);
+	}
+
+	return 0;
+}
+
+static int nfc_se_io(struct nfc_dev *dev, u32 se_idx,
+		     u8 *apdu, size_t apdu_length,
+		     se_io_cb_t cb, void *cb_context)
+{
+	struct nfc_se *se;
+	int rc;
+
+	pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
+
+	device_lock(&dev->dev);
+
+	if (!device_is_registered(&dev->dev)) {
+		rc = -ENODEV;
+		goto error;
+	}
+
+	if (!dev->dev_up) {
+		rc = -ENODEV;
+		goto error;
+	}
+
+	if (!dev->ops->se_io) {
+		rc = -EOPNOTSUPP;
+		goto error;
+	}
+
+	se = nfc_find_se(dev, se_idx);
+	if (!se) {
+		rc = -EINVAL;
+		goto error;
+	}
+
+	if (se->state != NFC_SE_ENABLED) {
+		rc = -ENODEV;
+		goto error;
+	}
+
+	rc = dev->ops->se_io(dev, se_idx, apdu,
+			apdu_length, cb, cb_context);
+
+error:
+	device_unlock(&dev->dev);
+	return rc;
+}
+
+struct se_io_ctx {
+	u32 dev_idx;
+	u32 se_idx;
+};
+
+static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err)
+{
+	struct se_io_ctx *ctx = context;
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg) {
+		kfree(ctx);
+		return;
+	}
+
+	hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+			  NFC_CMD_SE_IO);
+	if (!hdr)
+		goto free_msg;
+
+	if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) ||
+	    nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) ||
+	    nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+	kfree(ctx);
+
+	return;
+
+nla_put_failure:
+free_msg:
+	nlmsg_free(msg);
+	kfree(ctx);
+
+	return;
+}
+
+static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	struct se_io_ctx *ctx;
+	u32 dev_idx, se_idx;
+	u8 *apdu;
+	size_t apdu_len;
+	int rc;
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+	    !info->attrs[NFC_ATTR_SE_INDEX] ||
+	    !info->attrs[NFC_ATTR_SE_APDU])
+		return -EINVAL;
+
+	dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+	se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
+
+	dev = nfc_get_device(dev_idx);
+	if (!dev)
+		return -ENODEV;
+
+	if (!dev->ops || !dev->ops->se_io) {
+		rc = -EOPNOTSUPP;
+		goto put_dev;
+	}
+
+	apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]);
+	if (apdu_len == 0) {
+		rc = -EINVAL;
+		goto put_dev;
+	}
+
+	apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]);
+	if (!apdu) {
+		rc = -EINVAL;
+		goto put_dev;
+	}
+
+	ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL);
+	if (!ctx) {
+		rc = -ENOMEM;
+		goto put_dev;
+	}
+
+	ctx->dev_idx = dev_idx;
+	ctx->se_idx = se_idx;
+
+	rc = nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
+
+put_dev:
+	nfc_put_device(dev);
+	return rc;
+}
+
+static int nfc_genl_vendor_cmd(struct sk_buff *skb,
+			       struct genl_info *info)
+{
+	struct nfc_dev *dev;
+	const struct nfc_vendor_cmd *cmd;
+	u32 dev_idx, vid, subcmd;
+	u8 *data;
+	size_t data_len;
+	int i, err;
+
+	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+	    !info->attrs[NFC_ATTR_VENDOR_ID] ||
+	    !info->attrs[NFC_ATTR_VENDOR_SUBCMD])
+		return -EINVAL;
+
+	dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+	vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]);
+	subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]);
+
+	dev = nfc_get_device(dev_idx);
+	if (!dev)
+		return -ENODEV;
+
+	if (!dev->vendor_cmds || !dev->n_vendor_cmds) {
+		err = -ENODEV;
+		goto put_dev;
+	}
+
+	if (info->attrs[NFC_ATTR_VENDOR_DATA]) {
+		data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]);
+		data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]);
+		if (data_len == 0) {
+			err = -EINVAL;
+			goto put_dev;
+		}
+	} else {
+		data = NULL;
+		data_len = 0;
+	}
+
+	for (i = 0; i < dev->n_vendor_cmds; i++) {
+		cmd = &dev->vendor_cmds[i];
+
+		if (cmd->vendor_id != vid || cmd->subcmd != subcmd)
+			continue;
+
+		dev->cur_cmd_info = info;
+		err = cmd->doit(dev, data, data_len);
+		dev->cur_cmd_info = NULL;
+		goto put_dev;
+	}
+
+	err = -EOPNOTSUPP;
+
+put_dev:
+	nfc_put_device(dev);
+	return err;
+}
+
+/* message building helper */
+static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
+				int flags, u8 cmd)
+{
+	/* since there is no private header just add the generic one */
+	return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd);
+}
+
+static struct sk_buff *
+__nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen,
+			   u32 portid, u32 seq,
+			   enum nfc_attrs attr,
+			   u32 oui, u32 subcmd, gfp_t gfp)
+{
+	struct sk_buff *skb;
+	void *hdr;
+
+	skb = nlmsg_new(approxlen + 100, gfp);
+	if (!skb)
+		return NULL;
+
+	hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR);
+	if (!hdr) {
+		kfree_skb(skb);
+		return NULL;
+	}
+
+	if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx))
+		goto nla_put_failure;
+	if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui))
+		goto nla_put_failure;
+	if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd))
+		goto nla_put_failure;
+
+	((void **)skb->cb)[0] = dev;
+	((void **)skb->cb)[1] = hdr;
+
+	return skb;
+
+nla_put_failure:
+	kfree_skb(skb);
+	return NULL;
+}
+
+struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev,
+						 enum nfc_attrs attr,
+						 u32 oui, u32 subcmd,
+						 int approxlen)
+{
+	if (WARN_ON(!dev->cur_cmd_info))
+		return NULL;
+
+	return __nfc_alloc_vendor_cmd_skb(dev, approxlen,
+					  dev->cur_cmd_info->snd_portid,
+					  dev->cur_cmd_info->snd_seq, attr,
+					  oui, subcmd, GFP_KERNEL);
+}
+EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb);
+
+int nfc_vendor_cmd_reply(struct sk_buff *skb)
+{
+	struct nfc_dev *dev = ((void **)skb->cb)[0];
+	void *hdr = ((void **)skb->cb)[1];
+
+	/* clear CB data for netlink core to own from now on */
+	memset(skb->cb, 0, sizeof(skb->cb));
+
+	if (WARN_ON(!dev->cur_cmd_info)) {
+		kfree_skb(skb);
+		return -EINVAL;
+	}
+
+	genlmsg_end(skb, hdr);
+	return genlmsg_reply(skb, dev->cur_cmd_info);
+}
+EXPORT_SYMBOL(nfc_vendor_cmd_reply);
+
+static const struct genl_ops nfc_genl_ops[] = {
+	{
+		.cmd = NFC_CMD_GET_DEVICE,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_get_device,
+		.dumpit = nfc_genl_dump_devices,
+		.done = nfc_genl_dump_devices_done,
+	},
+	{
+		.cmd = NFC_CMD_DEV_UP,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_dev_up,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_DEV_DOWN,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_dev_down,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_START_POLL,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_start_poll,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_STOP_POLL,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_stop_poll,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_DEP_LINK_UP,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_dep_link_up,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_DEP_LINK_DOWN,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_dep_link_down,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_GET_TARGET,
+		.validate = GENL_DONT_VALIDATE_STRICT |
+			    GENL_DONT_VALIDATE_DUMP_STRICT,
+		.dumpit = nfc_genl_dump_targets,
+		.done = nfc_genl_dump_targets_done,
+	},
+	{
+		.cmd = NFC_CMD_LLC_GET_PARAMS,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_llc_get_params,
+	},
+	{
+		.cmd = NFC_CMD_LLC_SET_PARAMS,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_llc_set_params,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_LLC_SDREQ,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_llc_sdreq,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_FW_DOWNLOAD,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_fw_download,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_ENABLE_SE,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_enable_se,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_DISABLE_SE,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_disable_se,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_GET_SE,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.dumpit = nfc_genl_dump_ses,
+		.done = nfc_genl_dump_ses_done,
+	},
+	{
+		.cmd = NFC_CMD_SE_IO,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_se_io,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_ACTIVATE_TARGET,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_activate_target,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_VENDOR,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_vendor_cmd,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NFC_CMD_DEACTIVATE_TARGET,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+		.doit = nfc_genl_deactivate_target,
+		.flags = GENL_ADMIN_PERM,
+	},
+};
+
+static struct genl_family nfc_genl_family __ro_after_init = {
+	.hdrsize = 0,
+	.name = NFC_GENL_NAME,
+	.version = NFC_GENL_VERSION,
+	.maxattr = NFC_ATTR_MAX,
+	.policy = nfc_genl_policy,
+	.module = THIS_MODULE,
+	.ops = nfc_genl_ops,
+	.n_ops = ARRAY_SIZE(nfc_genl_ops),
+	.resv_start_op = NFC_CMD_DEACTIVATE_TARGET + 1,
+	.mcgrps = nfc_genl_mcgrps,
+	.n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps),
+};
+
+
+struct urelease_work {
+	struct	work_struct w;
+	u32	portid;
+};
+
+static void nfc_urelease_event_work(struct work_struct *work)
+{
+	struct urelease_work *w = container_of(work, struct urelease_work, w);
+	struct class_dev_iter iter;
+	struct nfc_dev *dev;
+
+	pr_debug("portid %d\n", w->portid);
+
+	mutex_lock(&nfc_devlist_mutex);
+
+	nfc_device_iter_init(&iter);
+	dev = nfc_device_iter_next(&iter);
+
+	while (dev) {
+		mutex_lock(&dev->genl_data.genl_data_mutex);
+
+		if (dev->genl_data.poll_req_portid == w->portid) {
+			nfc_stop_poll(dev);
+			dev->genl_data.poll_req_portid = 0;
+		}
+
+		mutex_unlock(&dev->genl_data.genl_data_mutex);
+
+		dev = nfc_device_iter_next(&iter);
+	}
+
+	nfc_device_iter_exit(&iter);
+
+	mutex_unlock(&nfc_devlist_mutex);
+
+	kfree(w);
+}
+
+static int nfc_genl_rcv_nl_event(struct notifier_block *this,
+				 unsigned long event, void *ptr)
+{
+	struct netlink_notify *n = ptr;
+	struct urelease_work *w;
+
+	if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC)
+		goto out;
+
+	pr_debug("NETLINK_URELEASE event from id %d\n", n->portid);
+
+	w = kmalloc(sizeof(*w), GFP_ATOMIC);
+	if (w) {
+		INIT_WORK(&w->w, nfc_urelease_event_work);
+		w->portid = n->portid;
+		schedule_work(&w->w);
+	}
+
+out:
+	return NOTIFY_DONE;
+}
+
+void nfc_genl_data_init(struct nfc_genl_data *genl_data)
+{
+	genl_data->poll_req_portid = 0;
+	mutex_init(&genl_data->genl_data_mutex);
+}
+
+void nfc_genl_data_exit(struct nfc_genl_data *genl_data)
+{
+	mutex_destroy(&genl_data->genl_data_mutex);
+}
+
+static struct notifier_block nl_notifier = {
+	.notifier_call  = nfc_genl_rcv_nl_event,
+};
+
+/**
+ * nfc_genl_init() - Initialize netlink interface
+ *
+ * This initialization function registers the nfc netlink family.
+ */
+int __init nfc_genl_init(void)
+{
+	int rc;
+
+	rc = genl_register_family(&nfc_genl_family);
+	if (rc)
+		return rc;
+
+	netlink_register_notifier(&nl_notifier);
+
+	return 0;
+}
+
+/**
+ * nfc_genl_exit() - Deinitialize netlink interface
+ *
+ * This exit function unregisters the nfc netlink family.
+ */
+void nfc_genl_exit(void)
+{
+	netlink_unregister_notifier(&nl_notifier);
+	genl_unregister_family(&nfc_genl_family);
+}