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, 740 insertions, 0 deletions

diff --git a/net/mac802154/iface.c b/net/mac802154/iface.c
new file mode 100644
index 000000000..c0e2da507
--- /dev/null
+++ b/net/mac802154/iface.c
@@ -0,0 +1,740 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2007-2012 Siemens AG
+ *
+ * Written by:
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Sergey Lapin <slapin@ossfans.org>
+ * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+#include <linux/netdevice.h>
+#include <linux/module.h>
+#include <linux/if_arp.h>
+#include <linux/ieee802154.h>
+
+#include <net/nl802154.h>
+#include <net/mac802154.h>
+#include <net/ieee802154_netdev.h>
+#include <net/cfg802154.h>
+
+#include "ieee802154_i.h"
+#include "driver-ops.h"
+
+int mac802154_wpan_update_llsec(struct net_device *dev)
+{
+	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+	struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
+	struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+	int rc = 0;
+
+	if (ops->llsec) {
+		struct ieee802154_llsec_params params;
+		int changed = 0;
+
+		params.pan_id = wpan_dev->pan_id;
+		changed |= IEEE802154_LLSEC_PARAM_PAN_ID;
+
+		params.hwaddr = wpan_dev->extended_addr;
+		changed |= IEEE802154_LLSEC_PARAM_HWADDR;
+
+		rc = ops->llsec->set_params(dev, &params, changed);
+	}
+
+	return rc;
+}
+
+static int
+mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+	struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+	struct sockaddr_ieee802154 *sa =
+		(struct sockaddr_ieee802154 *)&ifr->ifr_addr;
+	int err = -ENOIOCTLCMD;
+
+	if (cmd != SIOCGIFADDR && cmd != SIOCSIFADDR)
+		return err;
+
+	rtnl_lock();
+
+	switch (cmd) {
+	case SIOCGIFADDR:
+	{
+		u16 pan_id, short_addr;
+
+		pan_id = le16_to_cpu(wpan_dev->pan_id);
+		short_addr = le16_to_cpu(wpan_dev->short_addr);
+		if (pan_id == IEEE802154_PANID_BROADCAST ||
+		    short_addr == IEEE802154_ADDR_BROADCAST) {
+			err = -EADDRNOTAVAIL;
+			break;
+		}
+
+		sa->family = AF_IEEE802154;
+		sa->addr.addr_type = IEEE802154_ADDR_SHORT;
+		sa->addr.pan_id = pan_id;
+		sa->addr.short_addr = short_addr;
+
+		err = 0;
+		break;
+	}
+	case SIOCSIFADDR:
+		if (netif_running(dev)) {
+			rtnl_unlock();
+			return -EBUSY;
+		}
+
+		dev_warn(&dev->dev,
+			 "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n");
+		if (sa->family != AF_IEEE802154 ||
+		    sa->addr.addr_type != IEEE802154_ADDR_SHORT ||
+		    sa->addr.pan_id == IEEE802154_PANID_BROADCAST ||
+		    sa->addr.short_addr == IEEE802154_ADDR_BROADCAST ||
+		    sa->addr.short_addr == IEEE802154_ADDR_UNDEF) {
+			err = -EINVAL;
+			break;
+		}
+
+		wpan_dev->pan_id = cpu_to_le16(sa->addr.pan_id);
+		wpan_dev->short_addr = cpu_to_le16(sa->addr.short_addr);
+
+		err = mac802154_wpan_update_llsec(dev);
+		break;
+	}
+
+	rtnl_unlock();
+	return err;
+}
+
+static int mac802154_wpan_mac_addr(struct net_device *dev, void *p)
+{
+	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+	struct sockaddr *addr = p;
+	__le64 extended_addr;
+
+	if (netif_running(dev))
+		return -EBUSY;
+
+	/* lowpan need to be down for update
+	 * SLAAC address after ifup
+	 */
+	if (sdata->wpan_dev.lowpan_dev) {
+		if (netif_running(sdata->wpan_dev.lowpan_dev))
+			return -EBUSY;
+	}
+
+	ieee802154_be64_to_le64(&extended_addr, addr->sa_data);
+	if (!ieee802154_is_valid_extended_unicast_addr(extended_addr))
+		return -EINVAL;
+
+	dev_addr_set(dev, addr->sa_data);
+	sdata->wpan_dev.extended_addr = extended_addr;
+
+	/* update lowpan interface mac address when
+	 * wpan mac has been changed
+	 */
+	if (sdata->wpan_dev.lowpan_dev)
+		dev_addr_set(sdata->wpan_dev.lowpan_dev, dev->dev_addr);
+
+	return mac802154_wpan_update_llsec(dev);
+}
+
+static int ieee802154_setup_hw(struct ieee802154_sub_if_data *sdata)
+{
+	struct ieee802154_local *local = sdata->local;
+	struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+	int ret;
+
+	sdata->required_filtering = sdata->iface_default_filtering;
+
+	if (local->hw.flags & IEEE802154_HW_AFILT) {
+		local->addr_filt.pan_id = wpan_dev->pan_id;
+		local->addr_filt.ieee_addr = wpan_dev->extended_addr;
+		local->addr_filt.short_addr = wpan_dev->short_addr;
+	}
+
+	if (local->hw.flags & IEEE802154_HW_LBT) {
+		ret = drv_set_lbt_mode(local, wpan_dev->lbt);
+		if (ret < 0)
+			return ret;
+	}
+
+	if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) {
+		ret = drv_set_csma_params(local, wpan_dev->min_be,
+					  wpan_dev->max_be,
+					  wpan_dev->csma_retries);
+		if (ret < 0)
+			return ret;
+	}
+
+	if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) {
+		ret = drv_set_max_frame_retries(local, wpan_dev->frame_retries);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int mac802154_slave_open(struct net_device *dev)
+{
+	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+	struct ieee802154_local *local = sdata->local;
+	int res;
+
+	ASSERT_RTNL();
+
+	set_bit(SDATA_STATE_RUNNING, &sdata->state);
+
+	if (!local->open_count) {
+		res = ieee802154_setup_hw(sdata);
+		if (res)
+			goto err;
+
+		res = drv_start(local, sdata->required_filtering,
+				&local->addr_filt);
+		if (res)
+			goto err;
+	}
+
+	local->open_count++;
+	netif_start_queue(dev);
+	return 0;
+err:
+	/* might already be clear but that doesn't matter */
+	clear_bit(SDATA_STATE_RUNNING, &sdata->state);
+
+	return res;
+}
+
+static int
+ieee802154_check_mac_settings(struct ieee802154_local *local,
+			      struct ieee802154_sub_if_data *sdata,
+			      struct ieee802154_sub_if_data *nsdata)
+{
+	struct wpan_dev *nwpan_dev = &nsdata->wpan_dev;
+	struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+
+	ASSERT_RTNL();
+
+	if (sdata->iface_default_filtering != nsdata->iface_default_filtering)
+		return -EBUSY;
+
+	if (local->hw.flags & IEEE802154_HW_AFILT) {
+		if (wpan_dev->pan_id != nwpan_dev->pan_id ||
+		    wpan_dev->short_addr != nwpan_dev->short_addr ||
+		    wpan_dev->extended_addr != nwpan_dev->extended_addr)
+			return -EBUSY;
+	}
+
+	if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) {
+		if (wpan_dev->min_be != nwpan_dev->min_be ||
+		    wpan_dev->max_be != nwpan_dev->max_be ||
+		    wpan_dev->csma_retries != nwpan_dev->csma_retries)
+			return -EBUSY;
+	}
+
+	if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) {
+		if (wpan_dev->frame_retries != nwpan_dev->frame_retries)
+			return -EBUSY;
+	}
+
+	if (local->hw.flags & IEEE802154_HW_LBT) {
+		if (wpan_dev->lbt != nwpan_dev->lbt)
+			return -EBUSY;
+	}
+
+	return 0;
+}
+
+static int
+ieee802154_check_concurrent_iface(struct ieee802154_sub_if_data *sdata,
+				  enum nl802154_iftype iftype)
+{
+	struct ieee802154_local *local = sdata->local;
+	struct ieee802154_sub_if_data *nsdata;
+
+	/* we hold the RTNL here so can safely walk the list */
+	list_for_each_entry(nsdata, &local->interfaces, list) {
+		if (nsdata != sdata && ieee802154_sdata_running(nsdata)) {
+			int ret;
+
+			/* TODO currently we don't support multiple node/coord
+			 * types we need to run skb_clone at rx path. Check if
+			 * there exist really an use case if we need to support
+			 * multiple node/coord types at the same time.
+			 */
+			if (sdata->wpan_dev.iftype != NL802154_IFTYPE_MONITOR &&
+			    nsdata->wpan_dev.iftype != NL802154_IFTYPE_MONITOR)
+				return -EBUSY;
+
+			/* check all phy mac sublayer settings are the same.
+			 * We have only one phy, different values makes trouble.
+			 */
+			ret = ieee802154_check_mac_settings(local, sdata, nsdata);
+			if (ret < 0)
+				return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int mac802154_wpan_open(struct net_device *dev)
+{
+	int rc;
+	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+	struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+
+	rc = ieee802154_check_concurrent_iface(sdata, wpan_dev->iftype);
+	if (rc < 0)
+		return rc;
+
+	return mac802154_slave_open(dev);
+}
+
+static int mac802154_slave_close(struct net_device *dev)
+{
+	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+	struct ieee802154_local *local = sdata->local;
+
+	ASSERT_RTNL();
+
+	if (mac802154_is_scanning(local))
+		mac802154_abort_scan_locked(local, sdata);
+
+	if (mac802154_is_beaconing(local))
+		mac802154_stop_beacons_locked(local, sdata);
+
+	netif_stop_queue(dev);
+	local->open_count--;
+
+	clear_bit(SDATA_STATE_RUNNING, &sdata->state);
+
+	if (!local->open_count)
+		ieee802154_stop_device(local);
+
+	return 0;
+}
+
+static int mac802154_set_header_security(struct ieee802154_sub_if_data *sdata,
+					 struct ieee802154_hdr *hdr,
+					 const struct ieee802154_mac_cb *cb)
+{
+	struct ieee802154_llsec_params params;
+	u8 level;
+
+	mac802154_llsec_get_params(&sdata->sec, &params);
+
+	if (!params.enabled && cb->secen_override && cb->secen)
+		return -EINVAL;
+	if (!params.enabled ||
+	    (cb->secen_override && !cb->secen) ||
+	    !params.out_level)
+		return 0;
+	if (cb->seclevel_override && !cb->seclevel)
+		return -EINVAL;
+
+	level = cb->seclevel_override ? cb->seclevel : params.out_level;
+
+	hdr->fc.security_enabled = 1;
+	hdr->sec.level = level;
+	hdr->sec.key_id_mode = params.out_key.mode;
+	if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX)
+		hdr->sec.short_src = params.out_key.short_source;
+	else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX)
+		hdr->sec.extended_src = params.out_key.extended_source;
+	hdr->sec.key_id = params.out_key.id;
+
+	return 0;
+}
+
+static int ieee802154_header_create(struct sk_buff *skb,
+				    struct net_device *dev,
+				    const struct ieee802154_addr *daddr,
+				    const struct ieee802154_addr *saddr,
+				    unsigned len)
+{
+	struct ieee802154_hdr hdr;
+	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+	struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+	struct ieee802154_mac_cb *cb = mac_cb(skb);
+	int hlen;
+
+	if (!daddr)
+		return -EINVAL;
+
+	memset(&hdr.fc, 0, sizeof(hdr.fc));
+	hdr.fc.type = cb->type;
+	hdr.fc.security_enabled = cb->secen;
+	hdr.fc.ack_request = cb->ackreq;
+	hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF;
+
+	if (mac802154_set_header_security(sdata, &hdr, cb) < 0)
+		return -EINVAL;
+
+	if (!saddr) {
+		if (wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) ||
+		    wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) ||
+		    wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) {
+			hdr.source.mode = IEEE802154_ADDR_LONG;
+			hdr.source.extended_addr = wpan_dev->extended_addr;
+		} else {
+			hdr.source.mode = IEEE802154_ADDR_SHORT;
+			hdr.source.short_addr = wpan_dev->short_addr;
+		}
+
+		hdr.source.pan_id = wpan_dev->pan_id;
+	} else {
+		hdr.source = *(const struct ieee802154_addr *)saddr;
+	}
+
+	hdr.dest = *(const struct ieee802154_addr *)daddr;
+
+	hlen = ieee802154_hdr_push(skb, &hdr);
+	if (hlen < 0)
+		return -EINVAL;
+
+	skb_reset_mac_header(skb);
+	skb->mac_len = hlen;
+
+	if (len > ieee802154_max_payload(&hdr))
+		return -EMSGSIZE;
+
+	return hlen;
+}
+
+static const struct wpan_dev_header_ops ieee802154_header_ops = {
+	.create		= ieee802154_header_create,
+};
+
+/* This header create functionality assumes a 8 byte array for
+ * source and destination pointer at maximum. To adapt this for
+ * the 802.15.4 dataframe header we use extended address handling
+ * here only and intra pan connection. fc fields are mostly fallback
+ * handling. For provide dev_hard_header for dgram sockets.
+ */
+static int mac802154_header_create(struct sk_buff *skb,
+				   struct net_device *dev,
+				   unsigned short type,
+				   const void *daddr,
+				   const void *saddr,
+				   unsigned len)
+{
+	struct ieee802154_hdr hdr;
+	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+	struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+	struct ieee802154_mac_cb cb = { };
+	int hlen;
+
+	if (!daddr)
+		return -EINVAL;
+
+	memset(&hdr.fc, 0, sizeof(hdr.fc));
+	hdr.fc.type = IEEE802154_FC_TYPE_DATA;
+	hdr.fc.ack_request = wpan_dev->ackreq;
+	hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF;
+
+	/* TODO currently a workaround to give zero cb block to set
+	 * security parameters defaults according MIB.
+	 */
+	if (mac802154_set_header_security(sdata, &hdr, &cb) < 0)
+		return -EINVAL;
+
+	hdr.dest.pan_id = wpan_dev->pan_id;
+	hdr.dest.mode = IEEE802154_ADDR_LONG;
+	ieee802154_be64_to_le64(&hdr.dest.extended_addr, daddr);
+
+	hdr.source.pan_id = hdr.dest.pan_id;
+	hdr.source.mode = IEEE802154_ADDR_LONG;
+
+	if (!saddr)
+		hdr.source.extended_addr = wpan_dev->extended_addr;
+	else
+		ieee802154_be64_to_le64(&hdr.source.extended_addr, saddr);
+
+	hlen = ieee802154_hdr_push(skb, &hdr);
+	if (hlen < 0)
+		return -EINVAL;
+
+	skb_reset_mac_header(skb);
+	skb->mac_len = hlen;
+
+	if (len > ieee802154_max_payload(&hdr))
+		return -EMSGSIZE;
+
+	return hlen;
+}
+
+static int
+mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr)
+{
+	struct ieee802154_hdr hdr;
+
+	if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) {
+		pr_debug("malformed packet\n");
+		return 0;
+	}
+
+	if (hdr.source.mode == IEEE802154_ADDR_LONG) {
+		ieee802154_le64_to_be64(haddr, &hdr.source.extended_addr);
+		return IEEE802154_EXTENDED_ADDR_LEN;
+	}
+
+	return 0;
+}
+
+static const struct header_ops mac802154_header_ops = {
+	.create         = mac802154_header_create,
+	.parse          = mac802154_header_parse,
+};
+
+static const struct net_device_ops mac802154_wpan_ops = {
+	.ndo_open		= mac802154_wpan_open,
+	.ndo_stop		= mac802154_slave_close,
+	.ndo_start_xmit		= ieee802154_subif_start_xmit,
+	.ndo_do_ioctl		= mac802154_wpan_ioctl,
+	.ndo_set_mac_address	= mac802154_wpan_mac_addr,
+};
+
+static const struct net_device_ops mac802154_monitor_ops = {
+	.ndo_open		= mac802154_wpan_open,
+	.ndo_stop		= mac802154_slave_close,
+	.ndo_start_xmit		= ieee802154_monitor_start_xmit,
+};
+
+static void mac802154_wpan_free(struct net_device *dev)
+{
+	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+
+	mac802154_llsec_destroy(&sdata->sec);
+}
+
+static void ieee802154_if_setup(struct net_device *dev)
+{
+	dev->addr_len		= IEEE802154_EXTENDED_ADDR_LEN;
+	memset(dev->broadcast, 0xff, IEEE802154_EXTENDED_ADDR_LEN);
+
+	/* Let hard_header_len set to IEEE802154_MIN_HEADER_LEN. AF_PACKET
+	 * will not send frames without any payload, but ack frames
+	 * has no payload, so substract one that we can send a 3 bytes
+	 * frame. The xmit callback assumes at least a hard header where two
+	 * bytes fc and sequence field are set.
+	 */
+	dev->hard_header_len	= IEEE802154_MIN_HEADER_LEN - 1;
+	/* The auth_tag header is for security and places in private payload
+	 * room of mac frame which stucks between payload and FCS field.
+	 */
+	dev->needed_tailroom	= IEEE802154_MAX_AUTH_TAG_LEN +
+				  IEEE802154_FCS_LEN;
+	/* The mtu size is the payload without mac header in this case.
+	 * We have a dynamic length header with a minimum header length
+	 * which is hard_header_len. In this case we let mtu to the size
+	 * of maximum payload which is IEEE802154_MTU - IEEE802154_FCS_LEN -
+	 * hard_header_len. The FCS which is set by hardware or ndo_start_xmit
+	 * and the minimum mac header which can be evaluated inside driver
+	 * layer. The rest of mac header will be part of payload if greater
+	 * than hard_header_len.
+	 */
+	dev->mtu		= IEEE802154_MTU - IEEE802154_FCS_LEN -
+				  dev->hard_header_len;
+	dev->tx_queue_len	= 300;
+	dev->flags		= IFF_NOARP | IFF_BROADCAST;
+}
+
+static int
+ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata,
+		       enum nl802154_iftype type)
+{
+	struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+	int ret;
+	u8 tmp;
+
+	/* set some type-dependent values */
+	sdata->wpan_dev.iftype = type;
+
+	get_random_bytes(&tmp, sizeof(tmp));
+	atomic_set(&wpan_dev->bsn, tmp);
+	get_random_bytes(&tmp, sizeof(tmp));
+	atomic_set(&wpan_dev->dsn, tmp);
+
+	/* defaults per 802.15.4-2011 */
+	wpan_dev->min_be = 3;
+	wpan_dev->max_be = 5;
+	wpan_dev->csma_retries = 4;
+	wpan_dev->frame_retries = 3;
+
+	wpan_dev->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
+	wpan_dev->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST);
+
+	switch (type) {
+	case NL802154_IFTYPE_COORD:
+	case NL802154_IFTYPE_NODE:
+		ieee802154_be64_to_le64(&wpan_dev->extended_addr,
+					sdata->dev->dev_addr);
+
+		sdata->dev->header_ops = &mac802154_header_ops;
+		sdata->dev->needs_free_netdev = true;
+		sdata->dev->priv_destructor = mac802154_wpan_free;
+		sdata->dev->netdev_ops = &mac802154_wpan_ops;
+		sdata->dev->ml_priv = &mac802154_mlme_wpan;
+		sdata->iface_default_filtering = IEEE802154_FILTERING_4_FRAME_FIELDS;
+		wpan_dev->header_ops = &ieee802154_header_ops;
+
+		mutex_init(&sdata->sec_mtx);
+
+		mac802154_llsec_init(&sdata->sec);
+		ret = mac802154_wpan_update_llsec(sdata->dev);
+		if (ret < 0)
+			return ret;
+
+		break;
+	case NL802154_IFTYPE_MONITOR:
+		sdata->dev->needs_free_netdev = true;
+		sdata->dev->netdev_ops = &mac802154_monitor_ops;
+		sdata->iface_default_filtering = IEEE802154_FILTERING_NONE;
+		break;
+	default:
+		BUG();
+	}
+
+	return 0;
+}
+
+struct net_device *
+ieee802154_if_add(struct ieee802154_local *local, const char *name,
+		  unsigned char name_assign_type, enum nl802154_iftype type,
+		  __le64 extended_addr)
+{
+	u8 addr[IEEE802154_EXTENDED_ADDR_LEN];
+	struct net_device *ndev = NULL;
+	struct ieee802154_sub_if_data *sdata = NULL;
+	int ret;
+
+	ASSERT_RTNL();
+
+	ndev = alloc_netdev(sizeof(*sdata), name,
+			    name_assign_type, ieee802154_if_setup);
+	if (!ndev)
+		return ERR_PTR(-ENOMEM);
+
+	ndev->needed_headroom = local->hw.extra_tx_headroom +
+				IEEE802154_MAX_HEADER_LEN;
+
+	ret = dev_alloc_name(ndev, ndev->name);
+	if (ret < 0)
+		goto err;
+
+	ieee802154_le64_to_be64(ndev->perm_addr,
+				&local->hw.phy->perm_extended_addr);
+	switch (type) {
+	case NL802154_IFTYPE_COORD:
+	case NL802154_IFTYPE_NODE:
+		ndev->type = ARPHRD_IEEE802154;
+		if (ieee802154_is_valid_extended_unicast_addr(extended_addr)) {
+			ieee802154_le64_to_be64(addr, &extended_addr);
+			dev_addr_set(ndev, addr);
+		} else {
+			dev_addr_set(ndev, ndev->perm_addr);
+		}
+		break;
+	case NL802154_IFTYPE_MONITOR:
+		ndev->type = ARPHRD_IEEE802154_MONITOR;
+		break;
+	default:
+		ret = -EINVAL;
+		goto err;
+	}
+
+	/* TODO check this */
+	SET_NETDEV_DEV(ndev, &local->phy->dev);
+	dev_net_set(ndev, wpan_phy_net(local->hw.phy));
+	sdata = netdev_priv(ndev);
+	ndev->ieee802154_ptr = &sdata->wpan_dev;
+	memcpy(sdata->name, ndev->name, IFNAMSIZ);
+	sdata->dev = ndev;
+	sdata->wpan_dev.wpan_phy = local->hw.phy;
+	sdata->local = local;
+	INIT_LIST_HEAD(&sdata->wpan_dev.list);
+
+	/* setup type-dependent data */
+	ret = ieee802154_setup_sdata(sdata, type);
+	if (ret)
+		goto err;
+
+	ret = register_netdevice(ndev);
+	if (ret < 0)
+		goto err;
+
+	mutex_lock(&local->iflist_mtx);
+	list_add_tail_rcu(&sdata->list, &local->interfaces);
+	mutex_unlock(&local->iflist_mtx);
+
+	return ndev;
+
+err:
+	free_netdev(ndev);
+	return ERR_PTR(ret);
+}
+
+void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata)
+{
+	ASSERT_RTNL();
+
+	mutex_lock(&sdata->local->iflist_mtx);
+	list_del_rcu(&sdata->list);
+	mutex_unlock(&sdata->local->iflist_mtx);
+
+	synchronize_rcu();
+	unregister_netdevice(sdata->dev);
+}
+
+void ieee802154_remove_interfaces(struct ieee802154_local *local)
+{
+	struct ieee802154_sub_if_data *sdata, *tmp;
+
+	mutex_lock(&local->iflist_mtx);
+	list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
+		list_del(&sdata->list);
+
+		unregister_netdevice(sdata->dev);
+	}
+	mutex_unlock(&local->iflist_mtx);
+}
+
+static int netdev_notify(struct notifier_block *nb,
+			 unsigned long state, void *ptr)
+{
+	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+	struct ieee802154_sub_if_data *sdata;
+
+	if (state != NETDEV_CHANGENAME)
+		return NOTIFY_DONE;
+
+	if (!dev->ieee802154_ptr || !dev->ieee802154_ptr->wpan_phy)
+		return NOTIFY_DONE;
+
+	if (dev->ieee802154_ptr->wpan_phy->privid != mac802154_wpan_phy_privid)
+		return NOTIFY_DONE;
+
+	sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+	memcpy(sdata->name, dev->name, IFNAMSIZ);
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block mac802154_netdev_notifier = {
+	.notifier_call = netdev_notify,
+};
+
+int ieee802154_iface_init(void)
+{
+	return register_netdevice_notifier(&mac802154_netdev_notifier);
+}
+
+void ieee802154_iface_exit(void)
+{
+	unregister_netdevice_notifier(&mac802154_netdev_notifier);
+}