Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

 1) New offloading infrastructure and example 'rocker' driver for
    offloading of switching and routing to hardware.

    This work was done by a large group of dedicated individuals, not
    limited to: Scott Feldman, Jiri Pirko, Thomas Graf, John Fastabend,
    Jamal Hadi Salim, Andy Gospodarek, Florian Fainelli, Roopa Prabhu

 2) Start making the networking operate on IOV iterators instead of
    modifying iov objects in-situ during transfers.  Thanks to Al Viro
    and Herbert Xu.

 3) A set of new netlink interfaces for the TIPC stack, from Richard
    Alpe.

 4) Remove unnecessary looping during ipv6 routing lookups, from Martin
    KaFai Lau.

 5) Add PAUSE frame generation support to gianfar driver, from Matei
    Pavaluca.

 6) Allow for larger reordering levels in TCP, which are easily
    achievable in the real world right now, from Eric Dumazet.

 7) Add a variable of napi_schedule that doesn't need to disable cpu
    interrupts, from Eric Dumazet.

 8) Use a doubly linked list to optimize neigh_parms_release(), from
    Nicolas Dichtel.

 9) Various enhancements to the kernel BPF verifier, and allow eBPF
    programs to actually be attached to sockets.  From Alexei
    Starovoitov.

10) Support TSO/LSO in sunvnet driver, from David L Stevens.

11) Allow controlling ECN usage via routing metrics, from Florian
    Westphal.

12) Remote checksum offload, from Tom Herbert.

13) Add split-header receive, BQL, and xmit_more support to amd-xgbe
    driver, from Thomas Lendacky.

14) Add MPLS support to openvswitch, from Simon Horman.

15) Support wildcard tunnel endpoints in ipv6 tunnels, from Steffen
    Klassert.

16) Do gro flushes on a per-device basis using a timer, from Eric
    Dumazet.  This tries to resolve the conflicting goals between the
    desired handling of bulk vs.  RPC-like traffic.

17) Allow userspace to ask for the CPU upon what a packet was
    received/steered, via SO_INCOMING_CPU.  From Eric Dumazet.

18) Limit GSO packets to half the current congestion window, from Eric
    Dumazet.

19) Add a generic helper so that all drivers set their RSS keys in a
    consistent way, from Eric Dumazet.

20) Add xmit_more support to enic driver, from Govindarajulu
    Varadarajan.

21) Add VLAN packet scheduler action, from Jiri Pirko.

22) Support configurable RSS hash functions via ethtool, from Eyal
    Perry.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1820 commits)
  Fix race condition between vxlan_sock_add and vxlan_sock_release
  net/macb: fix compilation warning for print_hex_dump() called with skb->mac_header
  net/mlx4: Add support for A0 steering
  net/mlx4: Refactor QUERY_PORT
  net/mlx4_core: Add explicit error message when rule doesn't meet configuration
  net/mlx4: Add A0 hybrid steering
  net/mlx4: Add mlx4_bitmap zone allocator
  net/mlx4: Add a check if there are too many reserved QPs
  net/mlx4: Change QP allocation scheme
  net/mlx4_core: Use tasklet for user-space CQ completion events
  net/mlx4_core: Mask out host side virtualization features for guests
  net/mlx4_en: Set csum level for encapsulated packets
  be2net: Export tunnel offloads only when a VxLAN tunnel is created
  gianfar: Fix dma check map error when DMA_API_DEBUG is enabled
  cxgb4/csiostor: Don't use MASTER_MUST for fw_hello call
  net: fec: only enable mdio interrupt before phy device link up
  net: fec: clear all interrupt events to support i.MX6SX
  net: fec: reset fep link status in suspend function
  net: sock: fix access via invalid file descriptor
  net: introduce helper macro for_each_cmsghdr
  ...

1 files changed, 957 insertions, 0 deletions

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
new file mode 100644
index 000000000000..889647744697
--- /dev/null
+++ b/net/ieee802154/nl802154.c
@@ -0,0 +1,957 @@
+/* This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * Authors:
+ * Alexander Aring <aar@pengutronix.de>
+ *
+ * Based on: net/wireless/nl80211.c
+ */
+
+#include <linux/rtnetlink.h>
+
+#include <net/cfg802154.h>
+#include <net/genetlink.h>
+#include <net/mac802154.h>
+#include <net/netlink.h>
+#include <net/nl802154.h>
+#include <net/sock.h>
+
+#include "nl802154.h"
+#include "rdev-ops.h"
+#include "core.h"
+
+static int nl802154_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
+			     struct genl_info *info);
+
+static void nl802154_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
+			       struct genl_info *info);
+
+/* the netlink family */
+static struct genl_family nl802154_fam = {
+	.id = GENL_ID_GENERATE,		/* don't bother with a hardcoded ID */
+	.name = NL802154_GENL_NAME,	/* have users key off the name instead */
+	.hdrsize = 0,			/* no private header */
+	.version = 1,			/* no particular meaning now */
+	.maxattr = NL802154_ATTR_MAX,
+	.netnsok = true,
+	.pre_doit = nl802154_pre_doit,
+	.post_doit = nl802154_post_doit,
+};
+
+/* multicast groups */
+enum nl802154_multicast_groups {
+	NL802154_MCGRP_CONFIG,
+};
+
+static const struct genl_multicast_group nl802154_mcgrps[] = {
+	[NL802154_MCGRP_CONFIG] = { .name = "config", },
+};
+
+/* returns ERR_PTR values */
+static struct wpan_dev *
+__cfg802154_wpan_dev_from_attrs(struct net *netns, struct nlattr **attrs)
+{
+	struct cfg802154_registered_device *rdev;
+	struct wpan_dev *result = NULL;
+	bool have_ifidx = attrs[NL802154_ATTR_IFINDEX];
+	bool have_wpan_dev_id = attrs[NL802154_ATTR_WPAN_DEV];
+	u64 wpan_dev_id;
+	int wpan_phy_idx = -1;
+	int ifidx = -1;
+
+	ASSERT_RTNL();
+
+	if (!have_ifidx && !have_wpan_dev_id)
+		return ERR_PTR(-EINVAL);
+
+	if (have_ifidx)
+		ifidx = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
+	if (have_wpan_dev_id) {
+		wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
+		wpan_phy_idx = wpan_dev_id >> 32;
+	}
+
+	list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
+		struct wpan_dev *wpan_dev;
+
+		/* TODO netns compare */
+
+		if (have_wpan_dev_id && rdev->wpan_phy_idx != wpan_phy_idx)
+			continue;
+
+		list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
+			if (have_ifidx && wpan_dev->netdev &&
+			    wpan_dev->netdev->ifindex == ifidx) {
+				result = wpan_dev;
+				break;
+			}
+			if (have_wpan_dev_id &&
+			    wpan_dev->identifier == (u32)wpan_dev_id) {
+				result = wpan_dev;
+				break;
+			}
+		}
+
+		if (result)
+			break;
+	}
+
+	if (result)
+		return result;
+
+	return ERR_PTR(-ENODEV);
+}
+
+static struct cfg802154_registered_device *
+__cfg802154_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
+{
+	struct cfg802154_registered_device *rdev = NULL, *tmp;
+	struct net_device *netdev;
+
+	ASSERT_RTNL();
+
+	if (!attrs[NL802154_ATTR_WPAN_PHY] &&
+	    !attrs[NL802154_ATTR_IFINDEX] &&
+	    !attrs[NL802154_ATTR_WPAN_DEV])
+		return ERR_PTR(-EINVAL);
+
+	if (attrs[NL802154_ATTR_WPAN_PHY])
+		rdev = cfg802154_rdev_by_wpan_phy_idx(
+				nla_get_u32(attrs[NL802154_ATTR_WPAN_PHY]));
+
+	if (attrs[NL802154_ATTR_WPAN_DEV]) {
+		u64 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
+		struct wpan_dev *wpan_dev;
+		bool found = false;
+
+		tmp = cfg802154_rdev_by_wpan_phy_idx(wpan_dev_id >> 32);
+		if (tmp) {
+			/* make sure wpan_dev exists */
+			list_for_each_entry(wpan_dev, &tmp->wpan_dev_list, list) {
+				if (wpan_dev->identifier != (u32)wpan_dev_id)
+					continue;
+				found = true;
+				break;
+			}
+
+			if (!found)
+				tmp = NULL;
+
+			if (rdev && tmp != rdev)
+				return ERR_PTR(-EINVAL);
+			rdev = tmp;
+		}
+	}
+
+	if (attrs[NL802154_ATTR_IFINDEX]) {
+		int ifindex = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
+
+		netdev = __dev_get_by_index(netns, ifindex);
+		if (netdev) {
+			if (netdev->ieee802154_ptr)
+				tmp = wpan_phy_to_rdev(
+						netdev->ieee802154_ptr->wpan_phy);
+			else
+				tmp = NULL;
+
+			/* not wireless device -- return error */
+			if (!tmp)
+				return ERR_PTR(-EINVAL);
+
+			/* mismatch -- return error */
+			if (rdev && tmp != rdev)
+				return ERR_PTR(-EINVAL);
+
+			rdev = tmp;
+		}
+	}
+
+	if (!rdev)
+		return ERR_PTR(-ENODEV);
+
+	/* TODO netns compare */
+
+	return rdev;
+}
+
+/* This function returns a pointer to the driver
+ * that the genl_info item that is passed refers to.
+ *
+ * The result of this can be a PTR_ERR and hence must
+ * be checked with IS_ERR() for errors.
+ */
+static struct cfg802154_registered_device *
+cfg802154_get_dev_from_info(struct net *netns, struct genl_info *info)
+{
+	return __cfg802154_rdev_from_attrs(netns, info->attrs);
+}
+
+/* policy for the attributes */
+static const struct nla_policy nl802154_policy[NL802154_ATTR_MAX+1] = {
+	[NL802154_ATTR_WPAN_PHY] = { .type = NLA_U32 },
+	[NL802154_ATTR_WPAN_PHY_NAME] = { .type = NLA_NUL_STRING,
+					  .len = 20-1 },
+
+	[NL802154_ATTR_IFINDEX] = { .type = NLA_U32 },
+	[NL802154_ATTR_IFTYPE] = { .type = NLA_U32 },
+	[NL802154_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
+
+	[NL802154_ATTR_WPAN_DEV] = { .type = NLA_U64 },
+
+	[NL802154_ATTR_PAGE] = { .type = NLA_U8, },
+	[NL802154_ATTR_CHANNEL] = { .type = NLA_U8, },
+
+	[NL802154_ATTR_TX_POWER] = { .type = NLA_S8, },
+
+	[NL802154_ATTR_CCA_MODE] = { .type = NLA_U8, },
+
+	[NL802154_ATTR_SUPPORTED_CHANNEL] = { .type = NLA_U32, },
+
+	[NL802154_ATTR_PAN_ID] = { .type = NLA_U16, },
+	[NL802154_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 },
+	[NL802154_ATTR_SHORT_ADDR] = { .type = NLA_U16, },
+
+	[NL802154_ATTR_MIN_BE] = { .type = NLA_U8, },
+	[NL802154_ATTR_MAX_BE] = { .type = NLA_U8, },
+	[NL802154_ATTR_MAX_CSMA_BACKOFFS] = { .type = NLA_U8, },
+
+	[NL802154_ATTR_MAX_FRAME_RETRIES] = { .type = NLA_S8, },
+
+	[NL802154_ATTR_LBT_MODE] = { .type = NLA_U8, },
+};
+
+/* message building helper */
+static inline void *nl802154hdr_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, &nl802154_fam, flags, cmd);
+}
+
+static int
+nl802154_send_wpan_phy_channels(struct cfg802154_registered_device *rdev,
+				struct sk_buff *msg)
+{
+	struct nlattr *nl_page;
+	unsigned long page;
+
+	nl_page = nla_nest_start(msg, NL802154_ATTR_CHANNELS_SUPPORTED);
+	if (!nl_page)
+		return -ENOBUFS;
+
+	for (page = 0; page <= IEEE802154_MAX_PAGE; page++) {
+		if (nla_put_u32(msg, NL802154_ATTR_SUPPORTED_CHANNEL,
+				rdev->wpan_phy.channels_supported[page]))
+			return -ENOBUFS;
+	}
+	nla_nest_end(msg, nl_page);
+
+	return 0;
+}
+
+static int nl802154_send_wpan_phy(struct cfg802154_registered_device *rdev,
+				  enum nl802154_commands cmd,
+				  struct sk_buff *msg, u32 portid, u32 seq,
+				  int flags)
+{
+	void *hdr;
+
+	hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
+	if (!hdr)
+		return -ENOBUFS;
+
+	if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
+	    nla_put_string(msg, NL802154_ATTR_WPAN_PHY_NAME,
+			   wpan_phy_name(&rdev->wpan_phy)) ||
+	    nla_put_u32(msg, NL802154_ATTR_GENERATION,
+			cfg802154_rdev_list_generation))
+		goto nla_put_failure;
+
+	if (cmd != NL802154_CMD_NEW_WPAN_PHY)
+		goto finish;
+
+	/* DUMP PHY PIB */
+
+	/* current channel settings */
+	if (nla_put_u8(msg, NL802154_ATTR_PAGE,
+		       rdev->wpan_phy.current_page) ||
+	    nla_put_u8(msg, NL802154_ATTR_CHANNEL,
+		       rdev->wpan_phy.current_channel))
+		goto nla_put_failure;
+
+	/* supported channels array */
+	if (nl802154_send_wpan_phy_channels(rdev, msg))
+		goto nla_put_failure;
+
+	/* cca mode */
+	if (nla_put_u8(msg, NL802154_ATTR_CCA_MODE,
+		       rdev->wpan_phy.cca_mode))
+		goto nla_put_failure;
+
+	if (nla_put_s8(msg, NL802154_ATTR_TX_POWER,
+		       rdev->wpan_phy.transmit_power))
+		goto nla_put_failure;
+
+finish:
+	return genlmsg_end(msg, hdr);
+
+nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+struct nl802154_dump_wpan_phy_state {
+	s64 filter_wpan_phy;
+	long start;
+
+};
+
+static int nl802154_dump_wpan_phy_parse(struct sk_buff *skb,
+					struct netlink_callback *cb,
+					struct nl802154_dump_wpan_phy_state *state)
+{
+	struct nlattr **tb = nl802154_fam.attrbuf;
+	int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl802154_fam.hdrsize,
+			      tb, nl802154_fam.maxattr, nl802154_policy);
+
+	/* TODO check if we can handle error here,
+	 * we have no backward compatibility
+	 */
+	if (ret)
+		return 0;
+
+	if (tb[NL802154_ATTR_WPAN_PHY])
+		state->filter_wpan_phy = nla_get_u32(tb[NL802154_ATTR_WPAN_PHY]);
+	if (tb[NL802154_ATTR_WPAN_DEV])
+		state->filter_wpan_phy = nla_get_u64(tb[NL802154_ATTR_WPAN_DEV]) >> 32;
+	if (tb[NL802154_ATTR_IFINDEX]) {
+		struct net_device *netdev;
+		struct cfg802154_registered_device *rdev;
+		int ifidx = nla_get_u32(tb[NL802154_ATTR_IFINDEX]);
+
+		/* TODO netns */
+		netdev = __dev_get_by_index(&init_net, ifidx);
+		if (!netdev)
+			return -ENODEV;
+		if (netdev->ieee802154_ptr) {
+			rdev = wpan_phy_to_rdev(
+					netdev->ieee802154_ptr->wpan_phy);
+			state->filter_wpan_phy = rdev->wpan_phy_idx;
+		}
+	}
+
+	return 0;
+}
+
+static int
+nl802154_dump_wpan_phy(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	int idx = 0, ret;
+	struct nl802154_dump_wpan_phy_state *state = (void *)cb->args[0];
+	struct cfg802154_registered_device *rdev;
+
+	rtnl_lock();
+	if (!state) {
+		state = kzalloc(sizeof(*state), GFP_KERNEL);
+		if (!state) {
+			rtnl_unlock();
+			return -ENOMEM;
+		}
+		state->filter_wpan_phy = -1;
+		ret = nl802154_dump_wpan_phy_parse(skb, cb, state);
+		if (ret) {
+			kfree(state);
+			rtnl_unlock();
+			return ret;
+		}
+		cb->args[0] = (long)state;
+	}
+
+	list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
+		/* TODO net ns compare */
+		if (++idx <= state->start)
+			continue;
+		if (state->filter_wpan_phy != -1 &&
+		    state->filter_wpan_phy != rdev->wpan_phy_idx)
+			continue;
+		/* attempt to fit multiple wpan_phy data chunks into the skb */
+		ret = nl802154_send_wpan_phy(rdev,
+					     NL802154_CMD_NEW_WPAN_PHY,
+					     skb,
+					     NETLINK_CB(cb->skb).portid,
+					     cb->nlh->nlmsg_seq, NLM_F_MULTI);
+		if (ret < 0) {
+			if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
+			    !skb->len && cb->min_dump_alloc < 4096) {
+				cb->min_dump_alloc = 4096;
+				rtnl_unlock();
+				return 1;
+			}
+			idx--;
+			break;
+		}
+		break;
+	}
+	rtnl_unlock();
+
+	state->start = idx;
+
+	return skb->len;
+}
+
+static int nl802154_dump_wpan_phy_done(struct netlink_callback *cb)
+{
+	kfree((void *)cb->args[0]);
+	return 0;
+}
+
+static int nl802154_get_wpan_phy(struct sk_buff *skb, struct genl_info *info)
+{
+	struct sk_buff *msg;
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	if (nl802154_send_wpan_phy(rdev, NL802154_CMD_NEW_WPAN_PHY, msg,
+				   info->snd_portid, info->snd_seq, 0) < 0) {
+		nlmsg_free(msg);
+		return -ENOBUFS;
+	}
+
+	return genlmsg_reply(msg, info);
+}
+
+static inline u64 wpan_dev_id(struct wpan_dev *wpan_dev)
+{
+	return (u64)wpan_dev->identifier |
+	       ((u64)wpan_phy_to_rdev(wpan_dev->wpan_phy)->wpan_phy_idx << 32);
+}
+
+static int
+nl802154_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
+		    struct cfg802154_registered_device *rdev,
+		    struct wpan_dev *wpan_dev)
+{
+	struct net_device *dev = wpan_dev->netdev;
+	void *hdr;
+
+	hdr = nl802154hdr_put(msg, portid, seq, flags,
+			      NL802154_CMD_NEW_INTERFACE);
+	if (!hdr)
+		return -1;
+
+	if (dev &&
+	    (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex) ||
+	     nla_put_string(msg, NL802154_ATTR_IFNAME, dev->name)))
+		goto nla_put_failure;
+
+	if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
+	    nla_put_u32(msg, NL802154_ATTR_IFTYPE, wpan_dev->iftype) ||
+	    nla_put_u64(msg, NL802154_ATTR_WPAN_DEV, wpan_dev_id(wpan_dev)) ||
+	    nla_put_u32(msg, NL802154_ATTR_GENERATION,
+			rdev->devlist_generation ^
+			(cfg802154_rdev_list_generation << 2)))
+		goto nla_put_failure;
+
+	/* address settings */
+	if (nla_put_le64(msg, NL802154_ATTR_EXTENDED_ADDR,
+			 wpan_dev->extended_addr) ||
+	    nla_put_le16(msg, NL802154_ATTR_SHORT_ADDR,
+			 wpan_dev->short_addr) ||
+	    nla_put_le16(msg, NL802154_ATTR_PAN_ID, wpan_dev->pan_id))
+		goto nla_put_failure;
+
+	/* ARET handling */
+	if (nla_put_s8(msg, NL802154_ATTR_MAX_FRAME_RETRIES,
+		       wpan_dev->frame_retries) ||
+	    nla_put_u8(msg, NL802154_ATTR_MAX_BE, wpan_dev->max_be) ||
+	    nla_put_u8(msg, NL802154_ATTR_MAX_CSMA_BACKOFFS,
+		       wpan_dev->csma_retries) ||
+	    nla_put_u8(msg, NL802154_ATTR_MIN_BE, wpan_dev->min_be))
+		goto nla_put_failure;
+
+	/* listen before transmit */
+	if (nla_put_u8(msg, NL802154_ATTR_LBT_MODE, wpan_dev->lbt))
+		goto nla_put_failure;
+
+	return genlmsg_end(msg, hdr);
+
+nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+static int
+nl802154_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	int wp_idx = 0;
+	int if_idx = 0;
+	int wp_start = cb->args[0];
+	int if_start = cb->args[1];
+	struct cfg802154_registered_device *rdev;
+	struct wpan_dev *wpan_dev;
+
+	rtnl_lock();
+	list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
+		/* TODO netns compare */
+		if (wp_idx < wp_start) {
+			wp_idx++;
+			continue;
+		}
+		if_idx = 0;
+
+		list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
+			if (if_idx < if_start) {
+				if_idx++;
+				continue;
+			}
+			if (nl802154_send_iface(skb, NETLINK_CB(cb->skb).portid,
+						cb->nlh->nlmsg_seq, NLM_F_MULTI,
+						rdev, wpan_dev) < 0) {
+				goto out;
+			}
+			if_idx++;
+		}
+
+		wp_idx++;
+	}
+out:
+	rtnl_unlock();
+
+	cb->args[0] = wp_idx;
+	cb->args[1] = if_idx;
+
+	return skb->len;
+}
+
+static int nl802154_get_interface(struct sk_buff *skb, struct genl_info *info)
+{
+	struct sk_buff *msg;
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+	struct wpan_dev *wdev = info->user_ptr[1];
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	if (nl802154_send_iface(msg, info->snd_portid, info->snd_seq, 0,
+				rdev, wdev) < 0) {
+		nlmsg_free(msg);
+		return -ENOBUFS;
+	}
+
+	return genlmsg_reply(msg, info);
+}
+
+static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+	enum nl802154_iftype type = NL802154_IFTYPE_UNSPEC;
+	__le64 extended_addr = cpu_to_le64(0x0000000000000000ULL);
+
+	/* TODO avoid failing a new interface
+	 * creation due to pending removal?
+	 */
+
+	if (!info->attrs[NL802154_ATTR_IFNAME])
+		return -EINVAL;
+
+	if (info->attrs[NL802154_ATTR_IFTYPE]) {
+		type = nla_get_u32(info->attrs[NL802154_ATTR_IFTYPE]);
+		if (type > NL802154_IFTYPE_MAX)
+			return -EINVAL;
+	}
+
+	/* TODO add nla_get_le64 to netlink */
+	if (info->attrs[NL802154_ATTR_EXTENDED_ADDR])
+		extended_addr = (__force __le64)nla_get_u64(
+				info->attrs[NL802154_ATTR_EXTENDED_ADDR]);
+
+	if (!rdev->ops->add_virtual_intf)
+		return -EOPNOTSUPP;
+
+	return rdev_add_virtual_intf(rdev,
+				     nla_data(info->attrs[NL802154_ATTR_IFNAME]),
+				     type, extended_addr);
+}
+
+static int nl802154_del_interface(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+	struct wpan_dev *wpan_dev = info->user_ptr[1];
+
+	if (!rdev->ops->del_virtual_intf)
+		return -EOPNOTSUPP;
+
+	/* If we remove a wpan device without a netdev then clear
+	 * user_ptr[1] so that nl802154_post_doit won't dereference it
+	 * to check if it needs to do dev_put(). Otherwise it crashes
+	 * since the wpan_dev has been freed, unlike with a netdev where
+	 * we need the dev_put() for the netdev to really be freed.
+	 */
+	if (!wpan_dev->netdev)
+		info->user_ptr[1] = NULL;
+
+	return rdev_del_virtual_intf(rdev, wpan_dev);
+}
+
+static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+	u8 channel, page;
+
+	if (!info->attrs[NL802154_ATTR_PAGE] ||
+	    !info->attrs[NL802154_ATTR_CHANNEL])
+		return -EINVAL;
+
+	page = nla_get_u8(info->attrs[NL802154_ATTR_PAGE]);
+	channel = nla_get_u8(info->attrs[NL802154_ATTR_CHANNEL]);
+
+	/* check 802.15.4 constraints */
+	if (page > IEEE802154_MAX_PAGE || channel > IEEE802154_MAX_CHANNEL)
+		return -EINVAL;
+
+	return rdev_set_channel(rdev, page, channel);
+}
+
+static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
+	__le16 pan_id;
+
+	/* conflict here while tx/rx calls */
+	if (netif_running(dev))
+		return -EBUSY;
+
+	/* don't change address fields on monitor */
+	if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
+		return -EINVAL;
+
+	if (!info->attrs[NL802154_ATTR_PAN_ID])
+		return -EINVAL;
+
+	pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);
+
+	return rdev_set_pan_id(rdev, wpan_dev, pan_id);
+}
+
+static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
+	__le16 short_addr;
+
+	/* conflict here while tx/rx calls */
+	if (netif_running(dev))
+		return -EBUSY;
+
+	/* don't change address fields on monitor */
+	if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
+		return -EINVAL;
+
+	if (!info->attrs[NL802154_ATTR_SHORT_ADDR])
+		return -EINVAL;
+
+	short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
+
+	return rdev_set_short_addr(rdev, wpan_dev, short_addr);
+}
+
+static int
+nl802154_set_backoff_exponent(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
+	u8 min_be, max_be;
+
+	/* should be set on netif open inside phy settings */
+	if (netif_running(dev))
+		return -EBUSY;
+
+	if (!info->attrs[NL802154_ATTR_MIN_BE] ||
+	    !info->attrs[NL802154_ATTR_MAX_BE])
+		return -EINVAL;
+
+	min_be = nla_get_u8(info->attrs[NL802154_ATTR_MIN_BE]);
+	max_be = nla_get_u8(info->attrs[NL802154_ATTR_MAX_BE]);
+
+	/* check 802.15.4 constraints */
+	if (max_be < 3 || max_be > 8 || min_be > max_be)
+		return -EINVAL;
+
+	return rdev_set_backoff_exponent(rdev, wpan_dev, min_be, max_be);
+}
+
+static int
+nl802154_set_max_csma_backoffs(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
+	u8 max_csma_backoffs;
+
+	/* conflict here while other running iface settings */
+	if (netif_running(dev))
+		return -EBUSY;
+
+	if (!info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS])
+		return -EINVAL;
+
+	max_csma_backoffs = nla_get_u8(
+			info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS]);
+
+	/* check 802.15.4 constraints */
+	if (max_csma_backoffs > 5)
+		return -EINVAL;
+
+	return rdev_set_max_csma_backoffs(rdev, wpan_dev, max_csma_backoffs);
+}
+
+static int
+nl802154_set_max_frame_retries(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
+	s8 max_frame_retries;
+
+	if (netif_running(dev))
+		return -EBUSY;
+
+	if (!info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES])
+		return -EINVAL;
+
+	max_frame_retries = nla_get_s8(
+			info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES]);
+
+	/* check 802.15.4 constraints */
+	if (max_frame_retries < -1 || max_frame_retries > 7)
+		return -EINVAL;
+
+	return rdev_set_max_frame_retries(rdev, wpan_dev, max_frame_retries);
+}
+
+static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
+	bool mode;
+
+	if (netif_running(dev))
+		return -EBUSY;
+
+	if (!info->attrs[NL802154_ATTR_LBT_MODE])
+		return -EINVAL;
+
+	mode = !!nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]);
+	return rdev_set_lbt_mode(rdev, wpan_dev, mode);
+}
+
+#define NL802154_FLAG_NEED_WPAN_PHY	0x01
+#define NL802154_FLAG_NEED_NETDEV	0x02
+#define NL802154_FLAG_NEED_RTNL		0x04
+#define NL802154_FLAG_CHECK_NETDEV_UP	0x08
+#define NL802154_FLAG_NEED_NETDEV_UP	(NL802154_FLAG_NEED_NETDEV |\
+					 NL802154_FLAG_CHECK_NETDEV_UP)
+#define NL802154_FLAG_NEED_WPAN_DEV	0x10
+#define NL802154_FLAG_NEED_WPAN_DEV_UP	(NL802154_FLAG_NEED_WPAN_DEV |\
+					 NL802154_FLAG_CHECK_NETDEV_UP)
+
+static int nl802154_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
+			     struct genl_info *info)
+{
+	struct cfg802154_registered_device *rdev;
+	struct wpan_dev *wpan_dev;
+	struct net_device *dev;
+	bool rtnl = ops->internal_flags & NL802154_FLAG_NEED_RTNL;
+
+	if (rtnl)
+		rtnl_lock();
+
+	if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_PHY) {
+		rdev = cfg802154_get_dev_from_info(genl_info_net(info), info);
+		if (IS_ERR(rdev)) {
+			if (rtnl)
+				rtnl_unlock();
+			return PTR_ERR(rdev);
+		}
+		info->user_ptr[0] = rdev;
+	} else if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV ||
+		   ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
+		ASSERT_RTNL();
+		wpan_dev = __cfg802154_wpan_dev_from_attrs(genl_info_net(info),
+							   info->attrs);
+		if (IS_ERR(wpan_dev)) {
+			if (rtnl)
+				rtnl_unlock();
+			return PTR_ERR(wpan_dev);
+		}
+
+		dev = wpan_dev->netdev;
+		rdev = wpan_phy_to_rdev(wpan_dev->wpan_phy);
+
+		if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV) {
+			if (!dev) {
+				if (rtnl)
+					rtnl_unlock();
+				return -EINVAL;
+			}
+
+			info->user_ptr[1] = dev;
+		} else {
+			info->user_ptr[1] = wpan_dev;
+		}
+
+		if (dev) {
+			if (ops->internal_flags & NL802154_FLAG_CHECK_NETDEV_UP &&
+			    !netif_running(dev)) {
+				if (rtnl)
+					rtnl_unlock();
+				return -ENETDOWN;
+			}
+
+			dev_hold(dev);
+		}
+
+		info->user_ptr[0] = rdev;
+	}
+
+	return 0;
+}
+
+static void nl802154_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
+			       struct genl_info *info)
+{
+	if (info->user_ptr[1]) {
+		if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
+			struct wpan_dev *wpan_dev = info->user_ptr[1];
+
+			if (wpan_dev->netdev)
+				dev_put(wpan_dev->netdev);
+		} else {
+			dev_put(info->user_ptr[1]);
+		}
+	}
+
+	if (ops->internal_flags & NL802154_FLAG_NEED_RTNL)
+		rtnl_unlock();
+}
+
+static const struct genl_ops nl802154_ops[] = {
+	{
+		.cmd = NL802154_CMD_GET_WPAN_PHY,
+		.doit = nl802154_get_wpan_phy,
+		.dumpit = nl802154_dump_wpan_phy,
+		.done = nl802154_dump_wpan_phy_done,
+		.policy = nl802154_policy,
+		/* can be retrieved by unprivileged users */
+		.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL802154_CMD_GET_INTERFACE,
+		.doit = nl802154_get_interface,
+		.dumpit = nl802154_dump_interface,
+		.policy = nl802154_policy,
+		/* can be retrieved by unprivileged users */
+		.internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL802154_CMD_NEW_INTERFACE,
+		.doit = nl802154_new_interface,
+		.policy = nl802154_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL802154_CMD_DEL_INTERFACE,
+		.doit = nl802154_del_interface,
+		.policy = nl802154_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL802154_CMD_SET_CHANNEL,
+		.doit = nl802154_set_channel,
+		.policy = nl802154_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL802154_CMD_SET_PAN_ID,
+		.doit = nl802154_set_pan_id,
+		.policy = nl802154_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL802154_FLAG_NEED_NETDEV |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL802154_CMD_SET_SHORT_ADDR,
+		.doit = nl802154_set_short_addr,
+		.policy = nl802154_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL802154_FLAG_NEED_NETDEV |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL802154_CMD_SET_BACKOFF_EXPONENT,
+		.doit = nl802154_set_backoff_exponent,
+		.policy = nl802154_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL802154_FLAG_NEED_NETDEV |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL802154_CMD_SET_MAX_CSMA_BACKOFFS,
+		.doit = nl802154_set_max_csma_backoffs,
+		.policy = nl802154_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL802154_FLAG_NEED_NETDEV |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL802154_CMD_SET_MAX_FRAME_RETRIES,
+		.doit = nl802154_set_max_frame_retries,
+		.policy = nl802154_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL802154_FLAG_NEED_NETDEV |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL802154_CMD_SET_LBT_MODE,
+		.doit = nl802154_set_lbt_mode,
+		.policy = nl802154_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL802154_FLAG_NEED_NETDEV |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+};
+
+/* initialisation/exit functions */
+int nl802154_init(void)
+{
+	return genl_register_family_with_ops_groups(&nl802154_fam, nl802154_ops,
+						    nl802154_mcgrps);
+}
+
+void nl802154_exit(void)
+{
+	genl_unregister_family(&nl802154_fam);
+}