nl80211.c 331 KB
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/*
 * This is the new netlink-based wireless configuration interface.
 *
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 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
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 * Copyright 2013-2014  Intel Mobile Communications GmbH
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 */

#include <linux/if.h>
#include <linux/module.h>
#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/list.h>
#include <linux/if_ether.h>
#include <linux/ieee80211.h>
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
#include <linux/netlink.h>
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#include <linux/etherdevice.h>
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#include <net/net_namespace.h>
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#include <net/genetlink.h>
#include <net/cfg80211.h>
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#include <net/sock.h>
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#include <net/inet_connection_sock.h>
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#include "core.h"
#include "nl80211.h"
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#include "reg.h"
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#include "rdev-ops.h"
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static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
				   struct genl_info *info,
				   struct cfg80211_crypto_settings *settings,
				   int cipher_limit);

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static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
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			    struct genl_info *info);
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static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
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			      struct genl_info *info);

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/* the netlink family */
static struct genl_family nl80211_fam = {
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	.id = GENL_ID_GENERATE,		/* don't bother with a hardcoded ID */
	.name = NL80211_GENL_NAME,	/* have users key off the name instead */
	.hdrsize = 0,			/* no private header */
	.version = 1,			/* no particular meaning now */
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	.maxattr = NL80211_ATTR_MAX,
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	.netnsok = true,
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	.pre_doit = nl80211_pre_doit,
	.post_doit = nl80211_post_doit,
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};

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/* multicast groups */
enum nl80211_multicast_groups {
	NL80211_MCGRP_CONFIG,
	NL80211_MCGRP_SCAN,
	NL80211_MCGRP_REGULATORY,
	NL80211_MCGRP_MLME,
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	NL80211_MCGRP_VENDOR,
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	NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
};

static const struct genl_multicast_group nl80211_mcgrps[] = {
	[NL80211_MCGRP_CONFIG] = { .name = "config", },
	[NL80211_MCGRP_SCAN] = { .name = "scan", },
	[NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
	[NL80211_MCGRP_MLME] = { .name = "mlme", },
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	[NL80211_MCGRP_VENDOR] = { .name = "vendor", },
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#ifdef CONFIG_NL80211_TESTMODE
	[NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
#endif
};

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/* returns ERR_PTR values */
static struct wireless_dev *
__cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
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{
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	struct cfg80211_registered_device *rdev;
	struct wireless_dev *result = NULL;
	bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
	bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
	u64 wdev_id;
	int wiphy_idx = -1;
	int ifidx = -1;
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	ASSERT_RTNL();
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	if (!have_ifidx && !have_wdev_id)
		return ERR_PTR(-EINVAL);
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	if (have_ifidx)
		ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
	if (have_wdev_id) {
		wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
		wiphy_idx = wdev_id >> 32;
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	}

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	list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
		struct wireless_dev *wdev;

		if (wiphy_net(&rdev->wiphy) != netns)
			continue;

		if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
			continue;

		list_for_each_entry(wdev, &rdev->wdev_list, list) {
			if (have_ifidx && wdev->netdev &&
			    wdev->netdev->ifindex == ifidx) {
				result = wdev;
				break;
			}
			if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
				result = wdev;
				break;
			}
		}

		if (result)
			break;
	}

	if (result)
		return result;
	return ERR_PTR(-ENODEV);
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}

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static struct cfg80211_registered_device *
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__cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
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{
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	struct cfg80211_registered_device *rdev = NULL, *tmp;
	struct net_device *netdev;
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	ASSERT_RTNL();
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	if (!attrs[NL80211_ATTR_WIPHY] &&
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	    !attrs[NL80211_ATTR_IFINDEX] &&
	    !attrs[NL80211_ATTR_WDEV])
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		return ERR_PTR(-EINVAL);

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	if (attrs[NL80211_ATTR_WIPHY])
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		rdev = cfg80211_rdev_by_wiphy_idx(
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				nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
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	if (attrs[NL80211_ATTR_WDEV]) {
		u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
		struct wireless_dev *wdev;
		bool found = false;

		tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
		if (tmp) {
			/* make sure wdev exists */
			list_for_each_entry(wdev, &tmp->wdev_list, list) {
				if (wdev->identifier != (u32)wdev_id)
					continue;
				found = true;
				break;
			}

			if (!found)
				tmp = NULL;

			if (rdev && tmp != rdev)
				return ERR_PTR(-EINVAL);
			rdev = tmp;
		}
	}

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	if (attrs[NL80211_ATTR_IFINDEX]) {
		int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
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		netdev = __dev_get_by_index(netns, ifindex);
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		if (netdev) {
			if (netdev->ieee80211_ptr)
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				tmp = wiphy_to_rdev(
					netdev->ieee80211_ptr->wiphy);
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			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;
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		}
	}

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	if (!rdev)
		return ERR_PTR(-ENODEV);
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	if (netns != wiphy_net(&rdev->wiphy))
		return ERR_PTR(-ENODEV);

	return rdev;
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}

/*
 * 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 cfg80211_registered_device *
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cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
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{
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	return __cfg80211_rdev_from_attrs(netns, info->attrs);
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}

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/* policy for the attributes */
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static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
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	[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
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				      .len = 20-1 },
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	[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
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	[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
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	[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
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	[NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
	[NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
	[NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },

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	[NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
	[NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
	[NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
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	[NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
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	[NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
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	[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
	[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
	[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
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	[NL80211_ATTR_MAC] = { .len = ETH_ALEN },
	[NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
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	[NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
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	[NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
				    .len = WLAN_MAX_KEY_LEN },
	[NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
	[NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
	[NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
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	[NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
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	[NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
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	[NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
	[NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
	[NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
				       .len = IEEE80211_MAX_DATA_LEN },
	[NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
				       .len = IEEE80211_MAX_DATA_LEN },
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	[NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
	[NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
	[NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
	[NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
					       .len = NL80211_MAX_SUPP_RATES },
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	[NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
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	[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
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	[NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
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	[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
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				   .len = IEEE80211_MAX_MESH_ID_LEN },
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	[NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
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	[NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
	[NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },

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	[NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
	[NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
	[NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
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	[NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
					   .len = NL80211_MAX_SUPP_RATES },
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	[NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
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	[NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
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	[NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
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	[NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
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	[NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
	[NL80211_ATTR_IE] = { .type = NLA_BINARY,
			      .len = IEEE80211_MAX_DATA_LEN },
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	[NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
	[NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
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	[NL80211_ATTR_SSID] = { .type = NLA_BINARY,
				.len = IEEE80211_MAX_SSID_LEN },
	[NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
	[NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
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	[NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
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	[NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
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	[NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
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	[NL80211_ATTR_STA_FLAGS2] = {
		.len = sizeof(struct nl80211_sta_flag_update),
	},
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	[NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
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	[NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
	[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
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	[NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
	[NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
	[NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
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	[NL80211_ATTR_PID] = { .type = NLA_U32 },
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	[NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
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	[NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
				 .len = WLAN_PMKID_LEN },
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	[NL80211_ATTR_DURATION] = { .type = NLA_U32 },
	[NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
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	[NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
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	[NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
				 .len = IEEE80211_MAX_DATA_LEN },
	[NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
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	[NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
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	[NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
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	[NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
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	[NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
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	[NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
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	[NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
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	[NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
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	[NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
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	[NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
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	[NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
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	[NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
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	[NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
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	[NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
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	[NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
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	[NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
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	[NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
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	[NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
					 .len = IEEE80211_MAX_DATA_LEN },
	[NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
					 .len = IEEE80211_MAX_DATA_LEN },
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	[NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
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	[NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
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	[NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
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	[NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
	[NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
	[NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
	[NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
	[NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
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	[NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
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	[NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
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	[NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
				      .len = IEEE80211_MAX_DATA_LEN },
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	[NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
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	[NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
	[NL80211_ATTR_HT_CAPABILITY_MASK] = {
		.len = NL80211_HT_CAPABILITY_LEN
	},
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	[NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
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	[NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
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	[NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
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	[NL80211_ATTR_WDEV] = { .type = NLA_U64 },
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	[NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
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	[NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
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	[NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
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	[NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
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	[NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
	[NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
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	[NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
	[NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
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	[NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
	[NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
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	[NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
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	[NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
	[NL80211_ATTR_VHT_CAPABILITY_MASK] = {
		.len = NL80211_VHT_CAPABILITY_LEN,
	},
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	[NL80211_ATTR_MDID] = { .type = NLA_U16 },
	[NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
				  .len = IEEE80211_MAX_DATA_LEN },
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	[NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
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	[NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
	[NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
	[NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
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	[NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
	[NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
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	[NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
	[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
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	[NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
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	[NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
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	[NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
	[NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
	[NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
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	[NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
				   .len = IEEE80211_QOS_MAP_LEN_MAX },
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	[NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
	[NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
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	[NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
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	[NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
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	[NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
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	[NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
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	[NL80211_ATTR_TSID] = { .type = NLA_U8 },
	[NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
	[NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
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	[NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
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};

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/* policy for the key attributes */
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static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
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	[NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
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	[NL80211_KEY_IDX] = { .type = NLA_U8 },
	[NL80211_KEY_CIPHER] = { .type = NLA_U32 },
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	[NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
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	[NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
	[NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
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	[NL80211_KEY_TYPE] = { .type = NLA_U32 },
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	[NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
};

/* policy for the key default flags */
static const struct nla_policy
nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
	[NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
	[NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
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};

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/* policy for WoWLAN attributes */
static const struct nla_policy
nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
	[NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
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	[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
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	[NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
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	[NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
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};

static const struct nla_policy
nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
	[NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
	[NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
	[NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
	[NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
	[NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
	[NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
	[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
		.len = sizeof(struct nl80211_wowlan_tcp_data_seq)
	},
	[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
		.len = sizeof(struct nl80211_wowlan_tcp_data_token)
	},
	[NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
	[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
	[NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
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};

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/* policy for coalesce rule attributes */
static const struct nla_policy
nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
	[NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
	[NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
	[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
};

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/* policy for GTK rekey offload attributes */
static const struct nla_policy
nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
	[NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
	[NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
	[NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
};

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static const struct nla_policy
nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
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	[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
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						 .len = IEEE80211_MAX_SSID_LEN },
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	[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
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};

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static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
				     struct netlink_callback *cb,
				     struct cfg80211_registered_device **rdev,
				     struct wireless_dev **wdev)
480
{
481
	int err;
482

483
	rtnl_lock();
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	if (!cb->args[0]) {
		err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
				  nl80211_fam.attrbuf, nl80211_fam.maxattr,
				  nl80211_policy);
		if (err)
			goto out_unlock;
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		*wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
						   nl80211_fam.attrbuf);
		if (IS_ERR(*wdev)) {
			err = PTR_ERR(*wdev);
			goto out_unlock;
		}
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		*rdev = wiphy_to_rdev((*wdev)->wiphy);
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		/* 0 is the first index - add 1 to parse only once */
		cb->args[0] = (*rdev)->wiphy_idx + 1;
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		cb->args[1] = (*wdev)->identifier;
	} else {
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		/* subtract the 1 again here */
		struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
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		struct wireless_dev *tmp;
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		if (!wiphy) {
			err = -ENODEV;
			goto out_unlock;
		}
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		*rdev = wiphy_to_rdev(wiphy);
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		*wdev = NULL;
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		list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
			if (tmp->identifier == cb->args[1]) {
				*wdev = tmp;
				break;
			}
		}
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		if (!*wdev) {
			err = -ENODEV;
			goto out_unlock;
		}
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	}

	return 0;
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 out_unlock:
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	rtnl_unlock();
	return err;
}

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static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
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{
	rtnl_unlock();
}

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/* IE validation */
static bool is_valid_ie_attr(const struct nlattr *attr)
{
	const u8 *pos;
	int len;

	if (!attr)
		return true;

	pos = nla_data(attr);
	len = nla_len(attr);

	while (len) {
		u8 elemlen;

		if (len < 2)
			return false;
		len -= 2;

		elemlen = pos[1];
		if (elemlen > len)
			return false;

		len -= elemlen;
		pos += 2 + elemlen;
	}

	return true;
}

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/* message building helper */
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static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
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				   int flags, u8 cmd)
{
	/* since there is no private header just add the generic one */
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	return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
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}

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static int nl80211_msg_put_channel(struct sk_buff *msg,
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				   struct ieee80211_channel *chan,
				   bool large)
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{
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	/* Some channels must be completely excluded from the
	 * list to protect old user-space tools from breaking
	 */
	if (!large && chan->flags &
	    (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
		return 0;

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	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
			chan->center_freq))
		goto nla_put_failure;
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	if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
	    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
		goto nla_put_failure;
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	if (chan->flags & IEEE80211_CHAN_NO_IR) {
		if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
			goto nla_put_failure;
		if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
			goto nla_put_failure;
	}
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	if (chan->flags & IEEE80211_CHAN_RADAR) {
		if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
			goto nla_put_failure;
		if (large) {
			u32 time;

			time = elapsed_jiffies_msecs(chan->dfs_state_entered);

			if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
					chan->dfs_state))
				goto nla_put_failure;
			if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
					time))
				goto nla_put_failure;
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			if (nla_put_u32(msg,
					NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
					chan->dfs_cac_ms))
				goto nla_put_failure;
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		}
	}
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	if (large) {
		if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
			goto nla_put_failure;
		if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
			goto nla_put_failure;
		if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
			goto nla_put_failure;
		if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
			goto nla_put_failure;
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		if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
			goto nla_put_failure;
		if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
			goto nla_put_failure;
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		if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
			goto nla_put_failure;
		if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
			goto nla_put_failure;
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	}

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	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
			DBM_TO_MBM(chan->max_power)))
		goto nla_put_failure;
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	return 0;

 nla_put_failure:
	return -ENOBUFS;
}

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/* netlink command implementations */

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struct key_parse {
	struct key_params p;
	int idx;
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	int type;
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	bool def, defmgmt;
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	bool def_uni, def_multi;
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};

static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
{
	struct nlattr *tb[NL80211_KEY_MAX + 1];
	int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
				   nl80211_key_policy);
	if (err)
		return err;

	k->def = !!tb[NL80211_KEY_DEFAULT];
	k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];

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	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

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	if (tb[NL80211_KEY_IDX])
		k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);

	if (tb[NL80211_KEY_DATA]) {
		k->p.key = nla_data(tb[NL80211_KEY_DATA]);
		k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
	}

	if (tb[NL80211_KEY_SEQ]) {
		k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
		k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
	}

	if (tb[NL80211_KEY_CIPHER])
		k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);

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	if (tb[NL80211_KEY_TYPE]) {
		k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
		if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
			return -EINVAL;
	}

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	if (tb[NL80211_KEY_DEFAULT_TYPES]) {
		struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
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		err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
				       tb[NL80211_KEY_DEFAULT_TYPES],
				       nl80211_key_default_policy);
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		if (err)
			return err;

		k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
		k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
	}

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	return 0;
}

static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
{
	if (info->attrs[NL80211_ATTR_KEY_DATA]) {
		k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
		k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
	}

	if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
		k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
		k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
	}

	if (info->attrs[NL80211_ATTR_KEY_IDX])
		k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);

	if (info->attrs[NL80211_ATTR_KEY_CIPHER])
		k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);

	k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
	k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];

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	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

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	if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
		k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
		if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
			return -EINVAL;
	}

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	if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
		struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
		int err = nla_parse_nested(
				kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
				info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
				nl80211_key_default_policy);
		if (err)
			return err;

		k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
		k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
	}

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	return 0;
}

static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
{
	int err;

	memset(k, 0, sizeof(*k));
	k->idx = -1;
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	k->type = -1;
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	if (info->attrs[NL80211_ATTR_KEY])
		err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
	else
		err = nl80211_parse_key_old(info, k);

	if (err)
		return err;

	if (k->def && k->defmgmt)
		return -EINVAL;

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	if (k->defmgmt) {
		if (k->def_uni || !k->def_multi)
			return -EINVAL;
	}

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	if (k->idx != -1) {
		if (k->defmgmt) {
			if (k->idx < 4 || k->idx > 5)
				return -EINVAL;
		} else if (k->def) {
			if (k->idx < 0 || k->idx > 3)
				return -EINVAL;
		} else {
			if (k->idx < 0 || k->idx > 5)
				return -EINVAL;
		}
	}

	return 0;
}

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static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
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		       struct nlattr *keys, bool *no_ht)
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{
	struct key_parse parse;
	struct nlattr *key;
	struct cfg80211_cached_keys *result;
	int rem, err, def = 0;

	result = kzalloc(sizeof(*result), GFP_KERNEL);
	if (!result)
		return ERR_PTR(-ENOMEM);

	result->def = -1;
	result->defmgmt = -1;

	nla_for_each_nested(key, keys, rem) {
		memset(&parse, 0, sizeof(parse));
		parse.idx = -1;

		err = nl80211_parse_key_new(key, &parse);
		if (err)
			goto error;
		err = -EINVAL;
		if (!parse.p.key)
			goto error;
		if (parse.idx < 0 || parse.idx > 4)
			goto error;
		if (parse.def) {
			if (def)
				goto error;
			def = 1;
			result->def = parse.idx;
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			if (!parse.def_uni || !parse.def_multi)
				goto error;
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		} else if (parse.defmgmt)
			goto error;
		err = cfg80211_validate_key_settings(rdev, &parse.p,
851
						     parse.idx, false, NULL);
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		if (err)
			goto error;
		result->params[parse.idx].cipher = parse.p.cipher;
		result->params[parse.idx].key_len = parse.p.key_len;
		result->params[parse.idx].key = result->data[parse.idx];
		memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
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		if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
		    parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
			if (no_ht)
				*no_ht = true;
		}
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	}

	return result;
 error:
	kfree(result);
	return ERR_PTR(err);
}

static int nl80211_key_allowed(struct wireless_dev *wdev)
{
	ASSERT_WDEV_LOCK(wdev);

	switch (wdev->iftype) {
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
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	case NL80211_IFTYPE_P2P_GO:
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	case NL80211_IFTYPE_MESH_POINT:
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		break;
	case NL80211_IFTYPE_ADHOC:
	case NL80211_IFTYPE_STATION:
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	case NL80211_IFTYPE_P2P_CLIENT:
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		if (!wdev->current_bss)
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			return -ENOLINK;
		break;
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	case NL80211_IFTYPE_UNSPECIFIED:
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	case NL80211_IFTYPE_OCB:
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	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_P2P_DEVICE:
	case NL80211_IFTYPE_WDS:
	case NUM_NL80211_IFTYPES:
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		return -EINVAL;
	}

	return 0;
}

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static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
							struct nlattr *tb)
{
	struct ieee80211_channel *chan;

	if (tb == NULL)
		return NULL;
	chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
	if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
		return NULL;
	return chan;
}

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static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
{
	struct nlattr *nl_modes = nla_nest_start(msg, attr);
	int i;

	if (!nl_modes)
		goto nla_put_failure;

	i = 0;
	while (ifmodes) {
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		if ((ifmodes & 1) && nla_put_flag(msg, i))
			goto nla_put_failure;
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		ifmodes >>= 1;
		i++;
	}

	nla_nest_end(msg, nl_modes);
	return 0;

nla_put_failure:
	return -ENOBUFS;
}

static int nl80211_put_iface_combinations(struct wiphy *wiphy,
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					  struct sk_buff *msg,
					  bool large)
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{
	struct nlattr *nl_combis;
	int i, j;

	nl_combis = nla_nest_start(msg,
				NL80211_ATTR_INTERFACE_COMBINATIONS);
	if (!nl_combis)
		goto nla_put_failure;

	for (i = 0; i < wiphy->n_iface_combinations; i++) {
		const struct ieee80211_iface_combination *c;
		struct nlattr *nl_combi, *nl_limits;

		c = &wiphy->iface_combinations[i];

		nl_combi = nla_nest_start(msg, i + 1);
		if (!nl_combi)
			goto nla_put_failure;

		nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
		if (!nl_limits)
			goto nla_put_failure;

		for (j = 0; j < c->n_limits; j++) {
			struct nlattr *nl_limit;

			nl_limit = nla_nest_start(msg, j + 1);
			if (!nl_limit)
				goto nla_put_failure;
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			if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
					c->limits[j].max))
				goto nla_put_failure;
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			if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
						c->limits[j].types))
				goto nla_put_failure;
			nla_nest_end(msg, nl_limit);
		}

		nla_nest_end(msg, nl_limits);

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		if (c->beacon_int_infra_match &&
		    nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
			goto nla_put_failure;
		if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
				c->num_different_channels) ||
		    nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
				c->max_interfaces))
			goto nla_put_failure;
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		if (large &&
988 989 990 991
		    (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
				c->radar_detect_widths) ||
		     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
				c->radar_detect_regions)))
992
			goto nla_put_failure;
993 994 995 996 997 998 999 1000 1001 1002 1003

		nla_nest_end(msg, nl_combi);
	}

	nla_nest_end(msg, nl_combis);

	return 0;
nla_put_failure:
	return -ENOBUFS;
}

1004
#ifdef CONFIG_PM
1005 1006 1007
static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
					struct sk_buff *msg)
{
1008
	const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044
	struct nlattr *nl_tcp;

	if (!tcp)
		return 0;

	nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
	if (!nl_tcp)
		return -ENOBUFS;

	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
			tcp->data_payload_max))
		return -ENOBUFS;

	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
			tcp->data_payload_max))
		return -ENOBUFS;

	if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
		return -ENOBUFS;

	if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
				sizeof(*tcp->tok), tcp->tok))
		return -ENOBUFS;

	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
			tcp->data_interval_max))
		return -ENOBUFS;

	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
			tcp->wake_payload_max))
		return -ENOBUFS;

	nla_nest_end(msg, nl_tcp);
	return 0;
}

1045
static int nl80211_send_wowlan(struct sk_buff *msg,
1046
			       struct cfg80211_registered_device *rdev,
1047
			       bool large)
1048
{
1049
	struct nlattr *nl_wowlan;
1050

1051
	if (!rdev->wiphy.wowlan)
1052
		return 0;
1053

1054 1055 1056
	nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
	if (!nl_wowlan)
		return -ENOBUFS;
1057

1058
	if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1059
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1060
	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1061
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1062
	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1063
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1064
	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1065
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1066
	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1067
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1068
	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1069
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1070
	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1071
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1072
	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1073 1074
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
		return -ENOBUFS;
1075

1076
	if (rdev->wiphy.wowlan->n_patterns) {
1077
		struct nl80211_pattern_support pat = {
1078 1079 1080 1081
			.max_patterns = rdev->wiphy.wowlan->n_patterns,
			.min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
			.max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
			.max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1082
		};
1083

1084 1085 1086 1087
		if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
			    sizeof(pat), &pat))
			return -ENOBUFS;
	}
1088

1089
	if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1090 1091
		return -ENOBUFS;

1092 1093
	/* TODO: send wowlan net detect */

1094
	nla_nest_end(msg, nl_wowlan);
1095

1096 1097 1098
	return 0;
}
#endif
1099

1100
static int nl80211_send_coalesce(struct sk_buff *msg,
1101
				 struct cfg80211_registered_device *rdev)
1102 1103 1104
{
	struct nl80211_coalesce_rule_support rule;

1105
	if (!rdev->wiphy.coalesce)
1106 1107
		return 0;

1108 1109 1110 1111 1112 1113
	rule.max_rules = rdev->wiphy.coalesce->n_rules;
	rule.max_delay = rdev->wiphy.coalesce->max_delay;
	rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
	rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
	rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
	rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1114 1115 1116 1117 1118 1119 1120

	if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
		return -ENOBUFS;

	return 0;
}

1121 1122 1123 1124 1125 1126
static int nl80211_send_band_rateinfo(struct sk_buff *msg,
				      struct ieee80211_supported_band *sband)
{
	struct nlattr *nl_rates, *nl_rate;
	struct ieee80211_rate *rate;
	int i;
1127

1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139
	/* add HT info */
	if (sband->ht_cap.ht_supported &&
	    (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
		     sizeof(sband->ht_cap.mcs),
		     &sband->ht_cap.mcs) ||
	     nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
			 sband->ht_cap.cap) ||
	     nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
			sband->ht_cap.ampdu_factor) ||
	     nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
			sband->ht_cap.ampdu_density)))
		return -ENOBUFS;
1140

1141 1142 1143 1144 1145 1146 1147 1148
	/* add VHT info */
	if (sband->vht_cap.vht_supported &&
	    (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
		     sizeof(sband->vht_cap.vht_mcs),
		     &sband->vht_cap.vht_mcs) ||
	     nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
			 sband->vht_cap.cap)))
		return -ENOBUFS;
1149

1150 1151 1152 1153
	/* add bitrates */
	nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
	if (!nl_rates)
		return -ENOBUFS;
1154

1155 1156 1157 1158
	for (i = 0; i < sband->n_bitrates; i++) {
		nl_rate = nla_nest_start(msg, i);
		if (!nl_rate)
			return -ENOBUFS;
1159

1160 1161 1162 1163 1164 1165 1166 1167
		rate = &sband->bitrates[i];
		if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
				rate->bitrate))
			return -ENOBUFS;
		if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
		    nla_put_flag(msg,
				 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
			return -ENOBUFS;
1168