litmus-rt.git - The LITMUS^RT kernel.

The LITMUS^RT kernel.

Bjoern Brandenburg

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Commits per author per week (path 'drivers/net/wan/z85230.h')

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ver conversion' href='/cgit/cgit.cgi/litmus-rt-budgetable-locks.git/.git/commit/net/wireless/reg.c?h=update_litmus_2019&id=8318d78a44d49ac1edf2bdec7299de3617c4232e'>8318d78a44d4

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/*
 * Copyright 2002-2005, Instant802 Networks, Inc.
 * Copyright 2005-2006, Devicescape Software, Inc.
 * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
 * Copyright 2008-2011	Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
 * Copyright 2013-2014  Intel Mobile Communications GmbH
 * Copyright      2017  Intel Deutschland GmbH
 * Copyright (C) 2018 - 2019 Intel Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */


/**
 * DOC: Wireless regulatory infrastructure
 *
 * The usual implementation is for a driver to read a device EEPROM to
 * determine which regulatory domain it should be operating under, then
 * looking up the allowable channels in a driver-local table and finally
 * registering those channels in the wiphy structure.
 *
 * Another set of compliance enforcement is for drivers to use their
 * own compliance limits which can be stored on the EEPROM. The host
 * driver or firmware may ensure these are used.
 *
 * In addition to all this we provide an extra layer of regulatory
 * conformance. For drivers which do not have any regulatory
 * information CRDA provides the complete regulatory solution.
 * For others it provides a community effort on further restrictions
 * to enhance compliance.
 *
 * Note: When number of rules --> infinity we will not be able to
 * index on alpha2 any more, instead we'll probably have to
 * rely on some SHA1 checksum of the regdomain for example.
 *
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/ctype.h>
#include <linux/nl80211.h>
#include <linux/platform_device.h>
#include <linux/verification.h>
#include <linux/moduleparam.h>
#include <linux/firmware.h>
#include <net/cfg80211.h>
#include "core.h"
#include "reg.h"
#include "rdev-ops.h"
#include "nl80211.h"

/*
 * Grace period we give before making sure all current interfaces reside on
 * channels allowed by the current regulatory domain.
 */
#define REG_ENFORCE_GRACE_MS 60000

/**
 * enum reg_request_treatment - regulatory request treatment
 *
 * @REG_REQ_OK: continue processing the regulatory request
 * @REG_REQ_IGNORE: ignore the regulatory request
 * @REG_REQ_INTERSECT: the regulatory domain resulting from this request should
 *	be intersected with the current one.
 * @REG_REQ_ALREADY_SET: the regulatory request will not change the current
 *	regulatory settings, and no further processing is required.
 */
enum reg_request_treatment {
	REG_REQ_OK,
	REG_REQ_IGNORE,
	REG_REQ_INTERSECT,
	REG_REQ_ALREADY_SET,
};

static struct regulatory_request core_request_world = {
	.initiator = NL80211_REGDOM_SET_BY_CORE,
	.alpha2[0] = '0',
	.alpha2[1] = '0',
	.intersect = false,
	.processed = true,
	.country_ie_env = ENVIRON_ANY,
};

/*
 * Receipt of information from last regulatory request,
 * protected by RTNL (and can be accessed with RCU protection)
 */
static struct regulatory_request __rcu *last_request =
	(void __force __rcu *)&core_request_world;

/* To trigger userspace events and load firmware */
static struct platform_device *reg_pdev;

/*
 * Central wireless core regulatory domains, we only need two,
 * the current one and a world regulatory domain in case we have no
 * information to give us an alpha2.
 * (protected by RTNL, can be read under RCU)
 */
const struct ieee80211_regdomain __rcu *cfg80211_regdomain;

/*
 * Number of devices that registered to the core
 * that support cellular base station regulatory hints
 * (protected by RTNL)
 */
static int reg_num_devs_support_basehint;

/*
 * State variable indicating if the platform on which the devices
 * are attached is operating in an indoor environment. The state variable
 * is relevant for all registered devices.
 */
static bool reg_is_indoor;
static spinlock_t reg_indoor_lock;

/* Used to track the userspace process controlling the indoor setting */
static u32 reg_is_indoor_portid;

static void restore_regulatory_settings(bool reset_user, bool cached);
static void print_regdomain(const struct ieee80211_regdomain *rd);

static const struct ieee80211_regdomain *get_cfg80211_regdom(void)
{
	return rcu_dereference_rtnl(cfg80211_regdomain);
}

const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy)
{
	return rcu_dereference_rtnl(wiphy->regd);
}

static const char *reg_dfs_region_str(enum nl80211_dfs_regions dfs_region)
{
	switch (dfs_region) {
	case NL80211_DFS_UNSET:
		return "unset";
	case NL80211_DFS_FCC:
		return "FCC";
	case NL80211_DFS_ETSI:
		return "ETSI";
	case NL80211_DFS_JP:
		return "JP";
	}
	return "Unknown";
}

enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy)
{
	const struct ieee80211_regdomain *regd = NULL;
	const struct ieee80211_regdomain *wiphy_regd = NULL;

	regd = get_cfg80211_regdom();
	if (!wiphy)
		goto out;

	wiphy_regd = get_wiphy_regdom(wiphy);
	if (!wiphy_regd)
		goto out;

	if (wiphy_regd->dfs_region == regd->dfs_region)
		goto out;

	pr_debug("%s: device specific dfs_region (%s) disagrees with cfg80211's central dfs_region (%s)\n",
		 dev_name(&wiphy->dev),
		 reg_dfs_region_str(wiphy_regd->dfs_region),
		 reg_dfs_region_str(regd->dfs_region));

out:
	return regd->dfs_region;
}

static void rcu_free_regdom(const struct ieee80211_regdomain *r)
{
	if (!r)
		return;
	kfree_rcu((struct ieee80211_regdomain *)r, rcu_head);
}

static struct regulatory_request *get_last_request(void)
{
	return rcu_dereference_rtnl(last_request);
}

/* Used to queue up regulatory hints */
static LIST_HEAD(reg_requests_list);
static spinlock_t reg_requests_lock;

/* Used to queue up beacon hints for review */
static LIST_HEAD(reg_pending_beacons);
static spinlock_t reg_pending_beacons_lock;

/* Used to keep track of processed beacon hints */
static LIST_HEAD(reg_beacon_list);

struct reg_beacon {
	struct list_head list;
	struct ieee80211_channel chan;
};

static void reg_check_chans_work(struct work_struct *work);
static DECLARE_DELAYED_WORK(reg_check_chans, reg_check_chans_work);

static void reg_todo(struct work_struct *work);
static DECLARE_WORK(reg_work, reg_todo);

/* We keep a static world regulatory domain in case of the absence of CRDA */
static const struct ieee80211_regdomain world_regdom = {
	.n_reg_rules = 8,
	.alpha2 =  "00",
	.reg_rules = {
		/* IEEE 802.11b/g, channels 1..11 */
		REG_RULE(2412-10, 2462+10, 40, 6, 20, 0),
		/* IEEE 802.11b/g, channels 12..13. */
		REG_RULE(2467-10, 2472+10, 20, 6, 20,
			NL80211_RRF_NO_IR | NL80211_RRF_AUTO_BW),
		/* IEEE 802.11 channel 14 - Only JP enables
		 * this and for 802.11b only */
		REG_RULE(2484-10, 2484+10, 20, 6, 20,
			NL80211_RRF_NO_IR |
			NL80211_RRF_NO_OFDM),
		/* IEEE 802.11a, channel 36..48 */
		REG_RULE(5180-10, 5240+10, 80, 6, 20,
                        NL80211_RRF_NO_IR |
                        NL80211_RRF_AUTO_BW),

		/* IEEE 802.11a, channel 52..64 - DFS required */
		REG_RULE(5260-10, 5320+10, 80, 6, 20,
			NL80211_RRF_NO_IR |
			NL80211_RRF_AUTO_BW |
			NL80211_RRF_DFS),

		/* IEEE 802.11a, channel 100..144 - DFS required */
		REG_RULE(5500-10, 5720+10, 160, 6, 20,
			NL80211_RRF_NO_IR |
			NL80211_RRF_DFS),

		/* IEEE 802.11a, channel 149..165 */
		REG_RULE(5745-10, 5825+10, 80, 6, 20,
			NL80211_RRF_NO_IR),

		/* IEEE 802.11ad (60GHz), channels 1..3 */
		REG_RULE(56160+2160*1-1080, 56160+2160*3+1080, 2160, 0, 0, 0),
	}
};

/* protected by RTNL */
static const struct ieee80211_regdomain *cfg80211_world_regdom =
	&world_regdom;

static char *ieee80211_regdom = "00";
static char user_alpha2[2];
static const struct ieee80211_regdomain *cfg80211_user_regdom;

module_param(ieee80211_regdom, charp, 0444);
MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code");

static void reg_free_request(struct regulatory_request *request)
{
	if (request == &core_request_world)
		return;

	if (request != get_last_request())
		kfree(request);
}

static void reg_free_last_request(void)
{
	struct regulatory_request *lr = get_last_request();

	if (lr != &core_request_world && lr)
		kfree_rcu(lr, rcu_head);
}

static void reg_update_last_request(struct regulatory_request *request)
{
	struct regulatory_request *lr;

	lr = get_last_request();
	if (lr == request)
		return;

	reg_free_last_request();
	rcu_assign_pointer(last_request, request);
}

static void reset_regdomains(bool full_reset,
			     const struct ieee80211_regdomain *new_regdom)
{
	const struct ieee80211_regdomain *r;

	ASSERT_RTNL();

	r = get_cfg80211_regdom();

	/* avoid freeing static information or freeing something twice */
	if (r == cfg80211_world_regdom)
		r = NULL;
	if (cfg80211_world_regdom == &world_regdom)
		cfg80211_world_regdom = NULL;
	if (r == &world_regdom)
		r = NULL;

	rcu_free_regdom(r);
	rcu_free_regdom(cfg80211_world_regdom);

	cfg80211_world_regdom = &world_regdom;
	rcu_assign_pointer(cfg80211_regdomain, new_regdom);

	if (!full_reset)
		return;

	reg_update_last_request(&core_request_world);
}

/*
 * Dynamic world regulatory domain requested by the wireless
 * core upon initialization
 */
static void update_world_regdomain(const struct ieee80211_regdomain *rd)
{
	struct regulatory_request *lr;

	lr = get_last_request();

	WARN_ON(!lr);

	reset_regdomains(false, rd);

	cfg80211_world_regdom = rd;
}

bool is_world_regdom(const char *alpha2)
{
	if (!alpha2)
		return false;
	return alpha2[0] == '0' && alpha2[1] == '0';
}

static bool is_alpha2_set(const char *alpha2)
{
	if (!alpha2)
		return false;
	return alpha2[0] && alpha2[1];
}

static bool is_unknown_alpha2(const char *alpha2)
{
	if (!alpha2)
		return false;
	/*
	 * Special case where regulatory domain was built by driver
	 * but a specific alpha2 cannot be determined
	 */
	return alpha2[0] == '9' && alpha2[1] == '9';
}

static bool is_intersected_alpha2(const char *alpha2)
{
	if (!alpha2)
		return false;
	/*
	 * Special case where regulatory domain is the
	 * result of an intersection between two regulatory domain
	 * structures
	 */
	return alpha2[0] == '9' && alpha2[1] == '8';
}

static bool is_an_alpha2(const char *alpha2)
{
	if (!alpha2)
		return false;
	return isalpha(alpha2[0]) && isalpha(alpha2[1]);
}

static bool alpha2_equal(const char *alpha2_x, const char *alpha2_y)
{
	if (!alpha2_x || !alpha2_y)
		return false;
	return alpha2_x[0] == alpha2_y[0] && alpha2_x[1] == alpha2_y[1];
}

static bool regdom_changes(const char *alpha2)
{
	const struct ieee80211_regdomain *r = get_cfg80211_regdom();

	if (!r)
		return true;
	return !alpha2_equal(r->alpha2, alpha2);
}

/*
 * The NL80211_REGDOM_SET_BY_USER regdom alpha2 is cached, this lets
 * you know if a valid regulatory hint with NL80211_REGDOM_SET_BY_USER
 * has ever been issued.
 */
static bool is_user_regdom_saved(void)
{
	if (user_alpha2[0] == '9' && user_alpha2[1] == '7')
		return false;

	/* This would indicate a mistake on the design */
	if (WARN(!is_world_regdom(user_alpha2) && !is_an_alpha2(user_alpha2),
		 "Unexpected user alpha2: %c%c\n",
		 user_alpha2[0], user_alpha2[1]))
		return false;

	return true;
}

static const struct ieee80211_regdomain *
reg_copy_regd(const struct ieee80211_regdomain *src_regd)
{
	struct ieee80211_regdomain *regd;
	int size_of_regd;
	unsigned int i;

	size_of_regd =
		sizeof(struct ieee80211_regdomain) +
		src_regd->n_reg_rules * sizeof(struct ieee80211_reg_rule);

	regd = kzalloc(size_of_regd, GFP_KERNEL);
	if (!regd)
		return ERR_PTR(-ENOMEM);

	memcpy(regd, src_regd, sizeof(struct ieee80211_regdomain));

	for (i = 0; i < src_regd->n_reg_rules; i++)
		memcpy(&regd->reg_rules[i], &src_regd->reg_rules[i],
		       sizeof(struct ieee80211_reg_rule));

	return regd;
}

static void cfg80211_save_user_regdom(const struct ieee80211_regdomain *rd)
{
	ASSERT_RTNL();

	if (!IS_ERR(cfg80211_user_regdom))
		kfree(cfg80211_user_regdom);
	cfg80211_user_regdom = reg_copy_regd(rd);
}

struct reg_regdb_apply_request {
	struct list_head list;
	const struct ieee80211_regdomain *regdom;
};

static LIST_HEAD(reg_regdb_apply_list);
static DEFINE_MUTEX(reg_regdb_apply_mutex);

static void reg_regdb_apply(struct work_struct *work)
{
	struct reg_regdb_apply_request *request;

	rtnl_lock();

	mutex_lock(&reg_regdb_apply_mutex);
	while (!list_empty(&reg_regdb_apply_list)) {
		request = list_first_entry(&reg_regdb_apply_list,
					   struct reg_regdb_apply_request,
					   list);
		list_del(&request->list);

		set_regdom(request->regdom, REGD_SOURCE_INTERNAL_DB);
		kfree(request);
	}
	mutex_unlock(&reg_regdb_apply_mutex);

	rtnl_unlock();
}

static DECLARE_WORK(reg_regdb_work, reg_regdb_apply);

static int reg_schedule_apply(const struct ieee80211_regdomain *regdom)
{
	struct reg_regdb_apply_request *request;

	request = kzalloc(sizeof(struct reg_regdb_apply_request), GFP_KERNEL);
	if (!request) {
		kfree(regdom);
		return -ENOMEM;
	}

	request->regdom = regdom;

	mutex_lock(&reg_regdb_apply_mutex);
	list_add_tail(&request->list, &reg_regdb_apply_list);
	mutex_unlock(&reg_regdb_apply_mutex);

	schedule_work(&reg_regdb_work);
	return 0;
}

#ifdef CONFIG_CFG80211_CRDA_SUPPORT
/* Max number of consecutive attempts to communicate with CRDA  */
#define REG_MAX_CRDA_TIMEOUTS 10

static u32 reg_crda_timeouts;

static void crda_timeout_work(struct work_struct *work);
static DECLARE_DELAYED_WORK(crda_timeout, crda_timeout_work);

static void crda_timeout_work(struct work_struct *work)
{
	pr_debug("Timeout while waiting for CRDA to reply, restoring regulatory settings\n");
	rtnl_lock();
	reg_crda_timeouts++;
	restore_regulatory_settings(true, false);
	rtnl_unlock();
}

static void cancel_crda_timeout(void)
{
	cancel_delayed_work(&crda_timeout);
}

static void cancel_crda_timeout_sync(void)
{
	cancel_delayed_work_sync(&crda_timeout);
}

static void reset_crda_timeouts(void)
{
	reg_crda_timeouts = 0;
}

/*
 * This lets us keep regulatory code which is updated on a regulatory
 * basis in userspace.
 */
static int call_crda(const char *alpha2)
{
	char country[12];
	char *env[] = { country, NULL };
	int ret;

	snprintf(country, sizeof(country), "COUNTRY=%c%c",
		 alpha2[0], alpha2[1]);

	if (reg_crda_timeouts > REG_MAX_CRDA_TIMEOUTS) {
		pr_debug("Exceeded CRDA call max attempts. Not calling CRDA\n");
		return -EINVAL;
	}

	if (!is_world_regdom((char *) alpha2))
		pr_debug("Calling CRDA for country: %c%c\n",
			 alpha2[0], alpha2[1]);
	else
		pr_debug("Calling CRDA to update world regulatory domain\n");

	ret = kobject_uevent_env(&reg_pdev->dev.kobj, KOBJ_CHANGE, env);
	if (ret)
		return ret;

	queue_delayed_work(system_power_efficient_wq,
			   &crda_timeout, msecs_to_jiffies(3142));
	return 0;
}
#else
static inline void cancel_crda_timeout(void) {}
static inline void cancel_crda_timeout_sync(void) {}
static inline void reset_crda_timeouts(void) {}
static inline int call_crda(const char *alpha2)
{
	return -ENODATA;
}
#endif /* CONFIG_CFG80211_CRDA_SUPPORT */

/* code to directly load a firmware database through request_firmware */
static const struct fwdb_header *regdb;

struct fwdb_country {
	u8 alpha2[2];
	__be16 coll_ptr;
	/* this struct cannot be extended */
} __packed __aligned(4);

struct fwdb_collection {
	u8 len;
	u8 n_rules;
	u8 dfs_region;
	/* no optional data yet */
	/* aligned to 2, then followed by __be16 array of rule pointers */
} __packed __aligned(4);

enum fwdb_flags {
	FWDB_FLAG_NO_OFDM	= BIT(0),
	FWDB_FLAG_NO_OUTDOOR	= BIT(1),
	FWDB_FLAG_DFS		= BIT(2),
	FWDB_FLAG_NO_IR		= BIT(3),
	FWDB_FLAG_AUTO_BW	= BIT(4),
};

struct fwdb_wmm_ac {
	u8 ecw;
	u8 aifsn;
	__be16 cot;
} __packed;

struct fwdb_wmm_rule {
	struct fwdb_wmm_ac client[IEEE80211_NUM_ACS];
	struct fwdb_wmm_ac ap[IEEE80211_NUM_ACS];
} __packed;

struct fwdb_rule {
	u8 len;
	u8 flags;
	__be16 max_eirp;
	__be32 start, end, max_bw;
	/* start of optional data */
	__be16 cac_timeout;
	__be16 wmm_ptr;
} __packed __aligned(4);

#define FWDB_MAGIC 0x52474442
#define FWDB_VERSION 20

struct fwdb_header {
	__be32 magic;
	__be32 version;
	struct fwdb_country country[];
} __packed __aligned(4);

static int ecw2cw(int ecw)
{
	return (1 << ecw) - 1;
}

static bool valid_wmm(struct fwdb_wmm_rule *rule)
{
	struct fwdb_wmm_ac *ac = (struct fwdb_wmm_ac *)rule;
	int i;

	for (i = 0; i < IEEE80211_NUM_ACS * 2; i++) {
		u16 cw_min = ecw2cw((ac[i].ecw & 0xf0) >> 4);
		u16 cw_max = ecw2cw(ac[i].ecw & 0x0f);
		u8 aifsn = ac[i].aifsn;

		if (cw_min >= cw_max)
			return false;

		if (aifsn < 1)
			return false;
	}

	return true;
}

static bool valid_rule(const u8 *data, unsigned int size, u16 rule_ptr)
{
	struct fwdb_rule *rule = (void *)(data + (rule_ptr << 2));

	if ((u8 *)rule + sizeof(rule->len) > data + size)
		return false;

	/* mandatory fields */
	if (rule->len < offsetofend(struct fwdb_rule, max_bw))
		return false;
	if (rule->len >= offsetofend(struct fwdb_rule, wmm_ptr)) {
		u32 wmm_ptr = be16_to_cpu(rule->wmm_ptr) << 2;
		struct fwdb_wmm_rule *wmm;

		if (wmm_ptr + sizeof(struct fwdb_wmm_rule) > size)
			return false;

		wmm = (void *)(data + wmm_ptr);

		if (!valid_wmm(wmm))
			return false;
	}
	return true;
}

static bool valid_country(const u8 *data, unsigned int size,
			  const struct fwdb_country *country)
{
	unsigned int ptr = be16_to_cpu(country->coll_ptr) << 2;
	struct fwdb_collection *coll = (void *)(data + ptr);
	__be16 *rules_ptr;
	unsigned int i;

	/* make sure we can read len/n_rules */
	if ((u8 *)coll + offsetofend(typeof(*coll), n_rules) > data + size)
		return false;

	/* make sure base struct and all rules fit */
	if ((u8 *)coll + ALIGN(coll->len, 2) +
	    (coll->n_rules * 2) > data + size)
		return false;

	/* mandatory fields must exist */
	if (coll->len < offsetofend(struct fwdb_collection, dfs_region))
		return false;

	rules_ptr = (void *)((u8 *)coll + ALIGN(coll->len, 2));

	for (i = 0; i < coll->n_rules; i++) {
		u16 rule_ptr = be16_to_cpu(rules_ptr[i]);

		if (!valid_rule(data, size, rule_ptr))
			return false;
	}

	return true;
}

#ifdef CONFIG_CFG80211_REQUIRE_SIGNED_REGDB
static struct key *builtin_regdb_keys;

static void __init load_keys_from_buffer(const u8 *p, unsigned int buflen)
{
	const u8 *end = p + buflen;
	size_t plen;
	key_ref_t key;

	while (p < end) {
		/* Each cert begins with an ASN.1 SEQUENCE tag and must be more
		 * than 256 bytes in size.
		 */
		if (end - p < 4)
			goto dodgy_cert;
		if (p[0] != 0x30 &&
		    p[1] != 0x82)
			goto dodgy_cert;
		plen = (p[2] << 8) | p[3];
		plen += 4;
		if (plen > end - p)
			goto dodgy_cert;

		key = key_create_or_update(make_key_ref(builtin_regdb_keys, 1),
					   "asymmetric", NULL, p, plen,
					   ((KEY_POS_ALL & ~KEY_POS_SETATTR) |
					    KEY_USR_VIEW | KEY_USR_READ),
					   KEY_ALLOC_NOT_IN_QUOTA |
					   KEY_ALLOC_BUILT_IN |
					   KEY_ALLOC_BYPASS_RESTRICTION);
		if (IS_ERR(key)) {
			pr_err("Problem loading in-kernel X.509 certificate (%ld)\n",
			       PTR_ERR(key));
		} else {
			pr_notice("Loaded X.509 cert '%s'\n",
				  key_ref_to_ptr(key)->description);
			key_ref_put(key);
		}
		p += plen;
	}

	return;

dodgy_cert:
	pr_err("Problem parsing in-kernel X.509 certificate list\n");
}

static int __init load_builtin_regdb_keys(void)
{
	builtin_regdb_keys =
		keyring_alloc(".builtin_regdb_keys",
			      KUIDT_INIT(0), KGIDT_INIT(0), current_cred(),
			      ((KEY_POS_ALL & ~KEY_POS_SETATTR) |
			      KEY_USR_VIEW | KEY_USR_READ | KEY_USR_SEARCH),
			      KEY_ALLOC_NOT_IN_QUOTA, NULL, NULL);
	if (IS_ERR(builtin_regdb_keys))
		return PTR_ERR(builtin_regdb_keys);

	pr_notice("Loading compiled-in X.509 certificates for regulatory database\n");

#ifdef CONFIG_CFG80211_USE_KERNEL_REGDB_KEYS
	load_keys_from_buffer(shipped_regdb_certs, shipped_regdb_certs_len);
#endif
#ifdef CONFIG_CFG80211_EXTRA_REGDB_KEYDIR
	if (CONFIG_CFG80211_EXTRA_REGDB_KEYDIR[0] != '\0')
		load_keys_from_buffer(extra_regdb_certs, extra_regdb_certs_len);
#endif

	return 0;
}


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