nl80211.c 307 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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 */

#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)
				tmp = wiphy_to_dev(
						netdev->ieee80211_ptr->wiphy);
			else
				tmp = NULL;

			dev_put(netdev);

			/* 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[NL80211_ATTR_MAX+1] = {
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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_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_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 },
	[NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
	[NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
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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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};

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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 },
};

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)
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{
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	int err;
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	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;
		}
		*rdev = wiphy_to_dev((*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;
		}
		*rdev = wiphy_to_dev(wiphy);
		*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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	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 (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 (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,
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						     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;
	default:
		return -EINVAL;
	}

	return 0;
}

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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;
934
935
936
937
		if (large &&
		    nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
				c->radar_detect_widths))
			goto nla_put_failure;
938
939
940
941
942
943
944
945
946
947
948

		nla_nest_end(msg, nl_combi);
	}

	nla_nest_end(msg, nl_combis);

	return 0;
nla_put_failure:
	return -ENOBUFS;
}

949
#ifdef CONFIG_PM
950
951
952
static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
					struct sk_buff *msg)
{
953
	const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
	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;
}

990
static int nl80211_send_wowlan(struct sk_buff *msg,
991
992
			       struct cfg80211_registered_device *dev,
			       bool large)
993
{
994
	struct nlattr *nl_wowlan;
995

996
	if (!dev->wiphy.wowlan)
997
		return 0;
998

999
1000
1001
	nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
	if (!nl_wowlan)
		return -ENOBUFS;
1002

1003
	if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1004
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1005
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1006
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1007
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1008
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1009
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1010
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1011
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1012
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1013
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1014
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1015
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1016
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1017
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1018
1019
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
		return -ENOBUFS;
1020

1021
	if (dev->wiphy.wowlan->n_patterns) {
1022
		struct nl80211_pattern_support pat = {
1023
1024
1025
1026
			.max_patterns = dev->wiphy.wowlan->n_patterns,
			.min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
			.max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
			.max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
1027
		};
1028

1029
1030
1031
1032
		if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
			    sizeof(pat), &pat))
			return -ENOBUFS;
	}
1033

1034
1035
1036
	if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
		return -ENOBUFS;

1037
	nla_nest_end(msg, nl_wowlan);
1038

1039
1040
1041
	return 0;
}
#endif
1042

1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
static int nl80211_send_coalesce(struct sk_buff *msg,
				 struct cfg80211_registered_device *dev)
{
	struct nl80211_coalesce_rule_support rule;

	if (!dev->wiphy.coalesce)
		return 0;

	rule.max_rules = dev->wiphy.coalesce->n_rules;
	rule.max_delay = dev->wiphy.coalesce->max_delay;
	rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
	rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
	rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
	rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;

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

	return 0;
}

1064
1065
1066
1067
1068
1069
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;
1070

1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
	/* 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;
1083

1084
1085
1086
1087
1088
1089
1090
1091
	/* 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;
1092

1093
1094
1095
1096
	/* add bitrates */
	nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
	if (!nl_rates)
		return -ENOBUFS;
1097

1098
1099
1100
1101
	for (i = 0; i < sband->n_bitrates; i++) {
		nl_rate = nla_nest_start(msg, i);
		if (!nl_rate)
			return -ENOBUFS;
1102

1103
1104
1105
1106
1107
1108
1109
1110
		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;
1111

1112
1113
		nla_nest_end(msg, nl_rate);
	}
1114

1115
	nla_nest_end(msg, nl_rates);
1116

1117
1118
	return 0;
}
1119

1120
1121
1122
1123
1124
1125
1126
1127
static int
nl80211_send_mgmt_stypes(struct sk_buff *msg,
			 const struct ieee80211_txrx_stypes *mgmt_stypes)
{
	u16 stypes;
	struct nlattr *nl_ftypes, *nl_ifs;
	enum nl80211_iftype ift;
	int i;
1128

1129
1130
	if (!mgmt_stypes)
		return 0;
1131

1132
1133
1134
	nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
	if (!nl_ifs)
		return -ENOBUFS;
1135

1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
	for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
		nl_ftypes = nla_nest_start(msg, ift);
		if (!nl_ftypes)
			return -ENOBUFS;
		i = 0;
		stypes = mgmt_stypes[ift].tx;
		while (stypes) {
			if ((stypes & 1) &&
			    nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
					(i << 4) | IEEE80211_FTYPE_MGMT))
				return -ENOBUFS;
			stypes >>= 1;
			i++;
1149
		}
1150
1151
		nla_nest_end(msg, nl_ftypes);
	}
1152

1153
	nla_nest_end(msg, nl_ifs);
1154

1155
1156
1157
	nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
	if (!nl_ifs)
		return -ENOBUFS;
1158

1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
	for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
		nl_ftypes = nla_nest_start(msg, ift);
		if (!nl_ftypes)
			return -ENOBUFS;
		i = 0;
		stypes = mgmt_stypes[ift].rx;
		while (stypes) {
			if ((stypes & 1) &&
			    nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
					(i << 4) | IEEE80211_FTYPE_MGMT))
				return -ENOBUFS;
			stypes >>= 1;
			i++;
		}
		nla_nest_end(msg, nl_ftypes);
	}
	nla_nest_end(msg, nl_ifs);
1176

1177
1178
	return 0;
}
1179

1180
1181
1182
1183
1184
1185
1186
struct nl80211_dump_wiphy_state {
	s64 filter_wiphy;
	long start;
	long split_start, band_start, chan_start;
	bool split;
};

1187
1188
static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
			      struct sk_buff *msg, u32 portid, u32 seq,
1189
			      int flags, struct nl80211_dump_wiphy_state *state)
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
{
	void *hdr;
	struct nlattr *nl_bands, *nl_band;
	struct nlattr *nl_freqs, *nl_freq;
	struct nlattr *nl_cmds;
	enum ieee80211_band band;
	struct ieee80211_channel *chan;
	int i;
	const struct ieee80211_txrx_stypes *mgmt_stypes =
				dev->wiphy.mgmt_stypes;
1200
	u32 features;
1201

1202
1203
1204
	hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
	if (!hdr)
		return -ENOBUFS;
1205

1206
1207
	if (WARN_ON(!state))
		return -EINVAL;
1208

1209
1210
1211
1212
1213
	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
	    nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
			   wiphy_name(&dev->wiphy)) ||
	    nla_put_u32(msg, NL80211_ATTR_GENERATION,
			cfg80211_rdev_list_generation))
1214
1215
		goto nla_put_failure;

1216
	switch (state->split_start) {
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
	case 0:
		if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
			       dev->wiphy.retry_short) ||
		    nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
			       dev->wiphy.retry_long) ||
		    nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
				dev->wiphy.frag_threshold) ||
		    nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
				dev->wiphy.rts_threshold) ||
		    nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
			       dev->wiphy.coverage_class) ||
		    nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
			       dev->wiphy.max_scan_ssids) ||
		    nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
			       dev->wiphy.max_sched_scan_ssids) ||
		    nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
				dev->wiphy.max_scan_ie_len) ||
		    nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
				dev->wiphy.max_sched_scan_ie_len) ||
		    nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
			       dev->wiphy.max_match_sets))
1238
			goto nla_put_failure;
1239
1240
1241

		if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
		    nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1242
			goto nla_put_failure;
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254