[linux-2.6-block.git] / net / wireless / mlme.c

/*
 * cfg80211 MLME SAP interface
 *
 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/nl80211.h>
#include <linux/wireless.h>
#include <net/cfg80211.h>
#include <net/iw_handler.h>
#include "core.h"
#include "nl80211.h"

void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct wiphy *wiphy = wdev->wiphy;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
	u8 *bssid = mgmt->bssid;
	int i;
	u16 status = le16_to_cpu(mgmt->u.auth.status_code);
	bool done = false;

	wdev_lock(wdev);

	for (i = 0; i < MAX_AUTH_BSSES; i++) {
		if (wdev->authtry_bsses[i] &&
		    memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid,
							ETH_ALEN) == 0) {
			if (status == WLAN_STATUS_SUCCESS) {
				wdev->auth_bsses[i] = wdev->authtry_bsses[i];
			} else {
				cfg80211_unhold_bss(wdev->authtry_bsses[i]);
				cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
			}
			wdev->authtry_bsses[i] = NULL;
			done = true;
			break;
		}
	}

	WARN_ON(!done);

	nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL);
	cfg80211_sme_rx_auth(dev, buf, len);

	wdev_unlock(wdev);
}
EXPORT_SYMBOL(cfg80211_send_rx_auth);

void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len)
{
	u16 status_code;
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct wiphy *wiphy = wdev->wiphy;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
	u8 *ie = mgmt->u.assoc_resp.variable;
	int i, ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
	struct cfg80211_internal_bss *bss = NULL;

	wdev_lock(wdev);

	status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);

	/*
	 * This is a bit of a hack, we don't notify userspace of
	 * a (re-)association reply if we tried to send a reassoc
	 * and got a reject -- we only try again with an assoc
	 * frame instead of reassoc.
	 */
	if (status_code != WLAN_STATUS_SUCCESS && wdev->conn &&
	    cfg80211_sme_failed_reassoc(wdev))
		goto out;

	nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);

	if (status_code == WLAN_STATUS_SUCCESS) {
		for (i = 0; i < MAX_AUTH_BSSES; i++) {
			if (!wdev->auth_bsses[i])
				continue;
			if (memcmp(wdev->auth_bsses[i]->pub.bssid, mgmt->bssid,
				   ETH_ALEN) == 0) {
				bss = wdev->auth_bsses[i];
				wdev->auth_bsses[i] = NULL;
				/* additional reference to drop hold */
				cfg80211_ref_bss(bss);
				break;
			}
		}

		WARN_ON(!bss);
	}

	if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) {
		/*
		 * This is for the userspace SME, the CONNECTING
		 * state will be changed to CONNECTED by
		 * __cfg80211_connect_result() below.
		 */
		wdev->sme_state = CFG80211_SME_CONNECTING;
	}

	/* this consumes one bss reference (unless bss is NULL) */
	__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
				  status_code,
				  status_code == WLAN_STATUS_SUCCESS,
				  bss ? &bss->pub : NULL);
	/* drop hold now, and also reference acquired above */
	if (bss) {
		cfg80211_unhold_bss(bss);
		cfg80211_put_bss(&bss->pub);
	}

 out:
	wdev_unlock(wdev);
}
EXPORT_SYMBOL(cfg80211_send_rx_assoc);

static void __cfg80211_send_deauth(struct net_device *dev,
				   const u8 *buf, size_t len)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct wiphy *wiphy = wdev->wiphy;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
	const u8 *bssid = mgmt->bssid;
	int i;
	bool done = false;

	ASSERT_WDEV_LOCK(wdev);

	nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);

	if (wdev->current_bss &&
	    memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
		done = true;
		cfg80211_unhold_bss(wdev->current_bss);
		cfg80211_put_bss(&wdev->current_bss->pub);
		wdev->current_bss = NULL;
	} else for (i = 0; i < MAX_AUTH_BSSES; i++) {
		if (wdev->auth_bsses[i] &&
		    memcmp(wdev->auth_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) {
			cfg80211_unhold_bss(wdev->auth_bsses[i]);
			cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
			wdev->auth_bsses[i] = NULL;
			done = true;
			break;
		}
		if (wdev->authtry_bsses[i] &&
		    memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) {
			cfg80211_unhold_bss(wdev->authtry_bsses[i]);
			cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
			wdev->authtry_bsses[i] = NULL;
			done = true;
			break;
		}
	}

	WARN_ON(!done);

	if (wdev->sme_state == CFG80211_SME_CONNECTED) {
		u16 reason_code;
		bool from_ap;

		reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);

		from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
		__cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
	} else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
		__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
					  WLAN_STATUS_UNSPECIFIED_FAILURE,
					  false, NULL);
	}
}


void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len,
			  void *cookie)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;

	BUG_ON(cookie && wdev != cookie);

	if (cookie) {
		/* called within callback */
		__cfg80211_send_deauth(dev, buf, len);
	} else {
		wdev_lock(wdev);
		__cfg80211_send_deauth(dev, buf, len);
		wdev_unlock(wdev);
	}
}
EXPORT_SYMBOL(cfg80211_send_deauth);

static void __cfg80211_send_disassoc(struct net_device *dev,
				     const u8 *buf, size_t len)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct wiphy *wiphy = wdev->wiphy;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
	const u8 *bssid = mgmt->bssid;
	int i;
	u16 reason_code;
	bool from_ap;
	bool done = false;

	ASSERT_WDEV_LOCK(wdev);

	nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL);

	if (wdev->sme_state != CFG80211_SME_CONNECTED)
		return;

	if (wdev->current_bss &&
	    memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
		for (i = 0; i < MAX_AUTH_BSSES; i++) {
			if (wdev->authtry_bsses[i] || wdev->auth_bsses[i])
				continue;
			wdev->auth_bsses[i] = wdev->current_bss;
			wdev->current_bss = NULL;
			done = true;
			cfg80211_sme_disassoc(dev, i);
			break;
		}
		WARN_ON(!done);
	} else
		WARN_ON(1);


	reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);

	from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
	__cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
}

void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len,
			    void *cookie)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;

	BUG_ON(cookie && wdev != cookie);

	if (cookie) {
		/* called within callback */
		__cfg80211_send_disassoc(dev, buf, len);
	} else {
		wdev_lock(wdev);
		__cfg80211_send_disassoc(dev, buf, len);
		wdev_unlock(wdev);
	}
}
EXPORT_SYMBOL(cfg80211_send_disassoc);

void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct wiphy *wiphy = wdev->wiphy;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
	int i;
	bool done = false;

	wdev_lock(wdev);

	nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
	if (wdev->sme_state == CFG80211_SME_CONNECTING)
		__cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
					  WLAN_STATUS_UNSPECIFIED_FAILURE,
					  false, NULL);

	for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
		if (wdev->authtry_bsses[i] &&
		    memcmp(wdev->authtry_bsses[i]->pub.bssid,
			   addr, ETH_ALEN) == 0) {
			cfg80211_unhold_bss(wdev->authtry_bsses[i]);
			cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
			wdev->authtry_bsses[i] = NULL;
			done = true;
			break;
		}
	}

	WARN_ON(!done);

	wdev_unlock(wdev);
}
EXPORT_SYMBOL(cfg80211_send_auth_timeout);

void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct wiphy *wiphy = wdev->wiphy;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
	int i;
	bool done = false;

	wdev_lock(wdev);

	nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
	if (wdev->sme_state == CFG80211_SME_CONNECTING)
		__cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
					  WLAN_STATUS_UNSPECIFIED_FAILURE,
					  false, NULL);

	for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
		if (wdev->auth_bsses[i] &&
		    memcmp(wdev->auth_bsses[i]->pub.bssid,
			   addr, ETH_ALEN) == 0) {
			cfg80211_unhold_bss(wdev->auth_bsses[i]);
			cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
			wdev->auth_bsses[i] = NULL;
			done = true;
			break;
		}
	}

	WARN_ON(!done);

	wdev_unlock(wdev);
}
EXPORT_SYMBOL(cfg80211_send_assoc_timeout);

void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
				  enum nl80211_key_type key_type, int key_id,
				  const u8 *tsc, gfp_t gfp)
{
	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
#ifdef CONFIG_WIRELESS_EXT
	union iwreq_data wrqu;
	char *buf = kmalloc(128, gfp);

	if (buf) {
		sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
			"keyid=%d %scast addr=%pM)", key_id,
			key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni",
			addr);
		memset(&wrqu, 0, sizeof(wrqu));
		wrqu.data.length = strlen(buf);
		wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
		kfree(buf);
	}
#endif

	nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
}
EXPORT_SYMBOL(cfg80211_michael_mic_failure);

/* some MLME handling for userspace SME */
int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
			 struct net_device *dev,
			 struct ieee80211_channel *chan,
			 enum nl80211_auth_type auth_type,
			 const u8 *bssid,
			 const u8 *ssid, int ssid_len,
			 const u8 *ie, int ie_len,
			 const u8 *key, int key_len, int key_idx)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_auth_request req;
	struct cfg80211_internal_bss *bss;
	int i, err, slot = -1, nfree = 0;

	ASSERT_WDEV_LOCK(wdev);

	if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
		if (!key || !key_len || key_idx < 0 || key_idx > 4)
			return -EINVAL;

	if (wdev->current_bss &&
	    memcmp(bssid, wdev->current_bss->pub.bssid, ETH_ALEN) == 0)
		return -EALREADY;

	for (i = 0; i < MAX_AUTH_BSSES; i++) {
		if (wdev->authtry_bsses[i] &&
		    memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid,
						ETH_ALEN) == 0)
			return -EALREADY;
		if (wdev->auth_bsses[i] &&
		    memcmp(bssid, wdev->auth_bsses[i]->pub.bssid,
						ETH_ALEN) == 0)
			return -EALREADY;
	}

	memset(&req, 0, sizeof(req));

	req.ie = ie;
	req.ie_len = ie_len;
	req.auth_type = auth_type;
	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
				   WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
	req.key = key;
	req.key_len = key_len;
	req.key_idx = key_idx;
	if (!req.bss)
		return -ENOENT;

	bss = bss_from_pub(req.bss);

	for (i = 0; i < MAX_AUTH_BSSES; i++) {
		if (!wdev->auth_bsses[i] && !wdev->authtry_bsses[i]) {
			slot = i;
			nfree++;
		}
	}

	/* we need one free slot for disassoc and one for this auth */
	if (nfree < 2) {
		err = -ENOSPC;
		goto out;
	}

	wdev->authtry_bsses[slot] = bss;
	cfg80211_hold_bss(bss);

	err = rdev->ops->auth(&rdev->wiphy, dev, &req);
	if (err) {
		wdev->authtry_bsses[slot] = NULL;
		cfg80211_unhold_bss(bss);
	}

 out:
	if (err)
		cfg80211_put_bss(req.bss);
	return err;
}

int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
		       struct net_device *dev, struct ieee80211_channel *chan,
		       enum nl80211_auth_type auth_type, const u8 *bssid,
		       const u8 *ssid, int ssid_len,
		       const u8 *ie, int ie_len,
		       const u8 *key, int key_len, int key_idx)
{
	int err;

	wdev_lock(dev->ieee80211_ptr);
	err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
				   ssid, ssid_len, ie, ie_len,
				   key, key_len, key_idx);
	wdev_unlock(dev->ieee80211_ptr);

	return err;
}

int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
			  struct net_device *dev,
			  struct ieee80211_channel *chan,
			  const u8 *bssid, const u8 *prev_bssid,
			  const u8 *ssid, int ssid_len,
			  const u8 *ie, int ie_len, bool use_mfp,
			  struct cfg80211_crypto_settings *crypt)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_assoc_request req;
	struct cfg80211_internal_bss *bss;
	int i, err, slot = -1;

	ASSERT_WDEV_LOCK(wdev);

	memset(&req, 0, sizeof(req));

	if (wdev->current_bss)
		return -EALREADY;

	req.ie = ie;
	req.ie_len = ie_len;
	memcpy(&req.crypto, crypt, sizeof(req.crypto));
	req.use_mfp = use_mfp;
	req.prev_bssid = prev_bssid;
	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
				   WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
	if (!req.bss)
		return -ENOENT;

	bss = bss_from_pub(req.bss);

	for (i = 0; i < MAX_AUTH_BSSES; i++) {
		if (bss == wdev->auth_bsses[i]) {
			slot = i;
			break;
		}
	}

	if (slot < 0) {
		err = -ENOTCONN;
		goto out;
	}

	err = rdev->ops->assoc(&rdev->wiphy, dev, &req);
 out:
	/* still a reference in wdev->auth_bsses[slot] */
	cfg80211_put_bss(req.bss);
	return err;
}

int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
			struct net_device *dev,
			struct ieee80211_channel *chan,
			const u8 *bssid, const u8 *prev_bssid,
			const u8 *ssid, int ssid_len,
			const u8 *ie, int ie_len, bool use_mfp,
			struct cfg80211_crypto_settings *crypt)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	int err;

	wdev_lock(wdev);
	err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
				    ssid, ssid_len, ie, ie_len, use_mfp, crypt);
	wdev_unlock(wdev);

	return err;
}

int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
			   struct net_device *dev, const u8 *bssid,
			   const u8 *ie, int ie_len, u16 reason)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_deauth_request req;
	int i;

	ASSERT_WDEV_LOCK(wdev);

	memset(&req, 0, sizeof(req));
	req.reason_code = reason;
	req.ie = ie;
	req.ie_len = ie_len;
	if (wdev->current_bss &&
	    memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
		req.bss = &wdev->current_bss->pub;
	} else for (i = 0; i < MAX_AUTH_BSSES; i++) {
		if (wdev->auth_bsses[i] &&
		    memcmp(bssid, wdev->auth_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
			req.bss = &wdev->auth_bsses[i]->pub;
			break;
		}
		if (wdev->authtry_bsses[i] &&
		    memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
			req.bss = &wdev->authtry_bsses[i]->pub;
			break;
		}
	}

	if (!req.bss)
		return -ENOTCONN;

	return rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
}

int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
			 struct net_device *dev, const u8 *bssid,
			 const u8 *ie, int ie_len, u16 reason)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	int err;

	wdev_lock(wdev);
	err = __cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason);
	wdev_unlock(wdev);

	return err;
}

static int __cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
				    struct net_device *dev, const u8 *bssid,
				    const u8 *ie, int ie_len, u16 reason)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_disassoc_request req;

	ASSERT_WDEV_LOCK(wdev);

	if (wdev->sme_state != CFG80211_SME_CONNECTED)
		return -ENOTCONN;

	if (WARN_ON(!wdev->current_bss))
		return -ENOTCONN;

	memset(&req, 0, sizeof(req));
	req.reason_code = reason;
	req.ie = ie;
	req.ie_len = ie_len;
	if (memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0)
		req.bss = &wdev->current_bss->pub;
	else
		return -ENOTCONN;

	return rdev->ops->disassoc(&rdev->wiphy, dev, &req, wdev);
}

int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
			   struct net_device *dev, const u8 *bssid,
			   const u8 *ie, int ie_len, u16 reason)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	int err;

	wdev_lock(wdev);
	err = __cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason);
	wdev_unlock(wdev);

	return err;
}

void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
			struct net_device *dev)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_deauth_request req;
	int i;

	ASSERT_WDEV_LOCK(wdev);

	if (!rdev->ops->deauth)
		return;

	memset(&req, 0, sizeof(req));
	req.reason_code = WLAN_REASON_DEAUTH_LEAVING;
	req.ie = NULL;
	req.ie_len = 0;

	if (wdev->current_bss) {
		req.bss = &wdev->current_bss->pub;
		rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
		if (wdev->current_bss) {
			cfg80211_unhold_bss(wdev->current_bss);
			cfg80211_put_bss(&wdev->current_bss->pub);
			wdev->current_bss = NULL;
		}
	}

	for (i = 0; i < MAX_AUTH_BSSES; i++) {
		if (wdev->auth_bsses[i]) {
			req.bss = &wdev->auth_bsses[i]->pub;
			rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
			if (wdev->auth_bsses[i]) {
				cfg80211_unhold_bss(wdev->auth_bsses[i]);
				cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
				wdev->auth_bsses[i] = NULL;
			}
		}
		if (wdev->authtry_bsses[i]) {
			req.bss = &wdev->authtry_bsses[i]->pub;
			rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
			if (wdev->authtry_bsses[i]) {
				cfg80211_unhold_bss(wdev->authtry_bsses[i]);
				cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
				wdev->authtry_bsses[i] = NULL;
			}
		}
	}
}
Commit	Line	Data
6039f6d2 JM	1	/*
	2	* cfg80211 MLME SAP interface
	3	*
	4	* Copyright (c) 2009, Jouni Malinen <j@w1.fi>
	5	*/
	6
	7	#include <linux/kernel.h>
	8	#include <linux/module.h>
	9	#include <linux/netdevice.h>
	10	#include <linux/nl80211.h>
a9a11622	11	#include <linux/wireless.h>
6039f6d2	12	#include <net/cfg80211.h>
a9a11622	13	#include <net/iw_handler.h>
6039f6d2 JM	14	#include "core.h"
	15	#include "nl80211.h"
	16
cb0b4beb	17	void cfg80211_send_rx_auth(struct net_device dev, const u8 buf, size_t len)
6039f6d2	18	{
19957bb3 JB	19	struct wireless_dev *wdev = dev->ieee80211_ptr;
19957bb3 JB	20	struct wiphy *wiphy = wdev->wiphy;
6039f6d2	21	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
19957bb3 JB	22	struct ieee80211_mgmt mgmt = (struct ieee80211_mgmt )buf;
	23	u8 *bssid = mgmt->bssid;
	24	int i;
	25	u16 status = le16_to_cpu(mgmt->u.auth.status_code);
	26	bool done = false;
	27
667503dd	28	wdev_lock(wdev);
cb0b4beb	29
19957bb3 JB	30	for (i = 0; i < MAX_AUTH_BSSES; i++) {
	31	if (wdev->authtry_bsses[i] &&
	32	memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid,
	33	ETH_ALEN) == 0) {
	34	if (status == WLAN_STATUS_SUCCESS) {
	35	wdev->auth_bsses[i] = wdev->authtry_bsses[i];
	36	} else {
	37	cfg80211_unhold_bss(wdev->authtry_bsses[i]);
	38	cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
	39	}
	40	wdev->authtry_bsses[i] = NULL;
	41	done = true;
	42	break;
	43	}
	44	}
	45
	46	WARN_ON(!done);
6829c878	47
cb0b4beb	48	nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL);
6829c878	49	cfg80211_sme_rx_auth(dev, buf, len);
667503dd JB	50
667503dd JB	51	wdev_unlock(wdev);
6039f6d2 JM	52	}
	53	EXPORT_SYMBOL(cfg80211_send_rx_auth);
	54
cb0b4beb	55	void cfg80211_send_rx_assoc(struct net_device dev, const u8 buf, size_t len)
6039f6d2	56	{
6829c878 JB	57	u16 status_code;
	58	struct wireless_dev *wdev = dev->ieee80211_ptr;
	59	struct wiphy *wiphy = wdev->wiphy;
6039f6d2	60	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6829c878 JB	61	struct ieee80211_mgmt mgmt = (struct ieee80211_mgmt )buf;
6829c878 JB	62	u8 *ie = mgmt->u.assoc_resp.variable;
19957bb3	63	int i, ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
df7fc0f9	64	struct cfg80211_internal_bss *bss = NULL;
6829c878	65
667503dd	66	wdev_lock(wdev);
cb0b4beb	67
6829c878 JB	68	status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
6829c878 JB	69
f401a6f7 JB	70	/*
	71	* This is a bit of a hack, we don't notify userspace of
	72	* a (re-)association reply if we tried to send a reassoc
	73	* and got a reject -- we only try again with an assoc
	74	* frame instead of reassoc.
	75	*/
	76	if (status_code != WLAN_STATUS_SUCCESS && wdev->conn &&
	77	cfg80211_sme_failed_reassoc(wdev))
	78	goto out;
	79
cb0b4beb	80	nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);
6829c878	81
19957bb3	82	if (status_code == WLAN_STATUS_SUCCESS) {
df7fc0f9 JB	83	for (i = 0; i < MAX_AUTH_BSSES; i++) {
	84	if (!wdev->auth_bsses[i])
	85	continue;
	86	if (memcmp(wdev->auth_bsses[i]->pub.bssid, mgmt->bssid,
	87	ETH_ALEN) == 0) {
	88	bss = wdev->auth_bsses[i];
19957bb3	89	wdev->auth_bsses[i] = NULL;
df7fc0f9 JB	90	/* additional reference to drop hold */
df7fc0f9 JB	91	cfg80211_ref_bss(bss);
19957bb3 JB	92	break;
	93	}
	94	}
	95
df7fc0f9 JB	96	WARN_ON(!bss);
	97	}
	98
ea416a79 JB	99	if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) {
	100	/*
	101	* This is for the userspace SME, the CONNECTING
	102	* state will be changed to CONNECTED by
	103	* __cfg80211_connect_result() below.
	104	*/
	105	wdev->sme_state = CFG80211_SME_CONNECTING;
	106	}
	107
df7fc0f9 JB	108	/* this consumes one bss reference (unless bss is NULL) */
	109	__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
	110	status_code,
	111	status_code == WLAN_STATUS_SUCCESS,
	112	bss ? &bss->pub : NULL);
	113	/* drop hold now, and also reference acquired above */
	114	if (bss) {
	115	cfg80211_unhold_bss(bss);
	116	cfg80211_put_bss(&bss->pub);
19957bb3	117	}
667503dd	118
f401a6f7	119	out:
667503dd	120	wdev_unlock(wdev);
6039f6d2 JM	121	}
	122	EXPORT_SYMBOL(cfg80211_send_rx_assoc);
	123
667503dd JB	124	static void __cfg80211_send_deauth(struct net_device *dev,
667503dd JB	125	const u8 *buf, size_t len)
6039f6d2	126	{
6829c878 JB	127	struct wireless_dev *wdev = dev->ieee80211_ptr;
6829c878 JB	128	struct wiphy *wiphy = wdev->wiphy;
6039f6d2	129	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6829c878	130	struct ieee80211_mgmt mgmt = (struct ieee80211_mgmt )buf;
19957bb3 JB	131	const u8 *bssid = mgmt->bssid;
	132	int i;
	133	bool done = false;
6829c878	134
667503dd	135	ASSERT_WDEV_LOCK(wdev);
cb0b4beb JB	136
cb0b4beb JB	137	nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);
6829c878	138
19957bb3 JB	139	if (wdev->current_bss &&
	140	memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
	141	done = true;
	142	cfg80211_unhold_bss(wdev->current_bss);
	143	cfg80211_put_bss(&wdev->current_bss->pub);
	144	wdev->current_bss = NULL;
	145	} else for (i = 0; i < MAX_AUTH_BSSES; i++) {
	146	if (wdev->auth_bsses[i] &&
	147	memcmp(wdev->auth_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) {
	148	cfg80211_unhold_bss(wdev->auth_bsses[i]);
	149	cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
	150	wdev->auth_bsses[i] = NULL;
	151	done = true;
	152	break;
	153	}
	154	if (wdev->authtry_bsses[i] &&
	155	memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) {
	156	cfg80211_unhold_bss(wdev->authtry_bsses[i]);
	157	cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
	158	wdev->authtry_bsses[i] = NULL;
	159	done = true;
	160	break;
	161	}
	162	}
19957bb3 JB	163
	164	WARN_ON(!done);
	165
6829c878 JB	166	if (wdev->sme_state == CFG80211_SME_CONNECTED) {
	167	u16 reason_code;
	168	bool from_ap;
	169
	170	reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
	171
e458b8a2	172	from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
667503dd	173	__cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
6829c878	174	} else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
667503dd JB	175	__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
667503dd JB	176	WLAN_STATUS_UNSPECIFIED_FAILURE,
df7fc0f9	177	false, NULL);
667503dd JB	178	}
	179	}
	180
	181
	182	void cfg80211_send_deauth(struct net_device dev, const u8 buf, size_t len,
	183	void *cookie)
	184	{
	185	struct wireless_dev *wdev = dev->ieee80211_ptr;
	186
	187	BUG_ON(cookie && wdev != cookie);
	188
	189	if (cookie) {
	190	/* called within callback */
	191	__cfg80211_send_deauth(dev, buf, len);
	192	} else {
	193	wdev_lock(wdev);
	194	__cfg80211_send_deauth(dev, buf, len);
	195	wdev_unlock(wdev);
6829c878	196	}
6039f6d2	197	}
53b46b84	198	EXPORT_SYMBOL(cfg80211_send_deauth);
6039f6d2	199
667503dd JB	200	static void __cfg80211_send_disassoc(struct net_device *dev,
667503dd JB	201	const u8 *buf, size_t len)
6039f6d2	202	{
6829c878 JB	203	struct wireless_dev *wdev = dev->ieee80211_ptr;
6829c878 JB	204	struct wiphy *wiphy = wdev->wiphy;
6039f6d2	205	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6829c878	206	struct ieee80211_mgmt mgmt = (struct ieee80211_mgmt )buf;
19957bb3 JB	207	const u8 *bssid = mgmt->bssid;
	208	int i;
	209	u16 reason_code;
	210	bool from_ap;
	211	bool done = false;
6829c878	212
596a07c1	213	ASSERT_WDEV_LOCK(wdev);
cb0b4beb JB	214
cb0b4beb JB	215	nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL);
a3b8b056	216
596a07c1 JB	217	if (wdev->sme_state != CFG80211_SME_CONNECTED)
596a07c1 JB	218	return;
6829c878	219
19957bb3	220	if (wdev->current_bss &&
b935df01	221	memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
19957bb3 JB	222	for (i = 0; i < MAX_AUTH_BSSES; i++) {
	223	if (wdev->authtry_bsses[i] \|\| wdev->auth_bsses[i])
	224	continue;
	225	wdev->auth_bsses[i] = wdev->current_bss;
	226	wdev->current_bss = NULL;
	227	done = true;
	228	cfg80211_sme_disassoc(dev, i);
	229	break;
	230	}
	231	WARN_ON(!done);
	232	} else
	233	WARN_ON(1);
6829c878	234
6829c878	235
19957bb3 JB	236	reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
19957bb3 JB	237
e458b8a2	238	from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
667503dd	239	__cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
667503dd JB	240	}
	241
	242	void cfg80211_send_disassoc(struct net_device dev, const u8 buf, size_t len,
	243	void *cookie)
	244	{
	245	struct wireless_dev *wdev = dev->ieee80211_ptr;
	246
	247	BUG_ON(cookie && wdev != cookie);
	248
	249	if (cookie) {
	250	/* called within callback */
	251	__cfg80211_send_disassoc(dev, buf, len);
	252	} else {
	253	wdev_lock(wdev);
	254	__cfg80211_send_disassoc(dev, buf, len);
	255	wdev_unlock(wdev);
	256	}
1965c853	257	}
6829c878	258	EXPORT_SYMBOL(cfg80211_send_disassoc);
1965c853	259
cb0b4beb	260	void cfg80211_send_auth_timeout(struct net_device dev, const u8 addr)
1965c853	261	{
6829c878 JB	262	struct wireless_dev *wdev = dev->ieee80211_ptr;
6829c878 JB	263	struct wiphy *wiphy = wdev->wiphy;
1965c853	264	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
19957bb3 JB	265	int i;
	266	bool done = false;
	267
667503dd	268	wdev_lock(wdev);
cb0b4beb JB	269
cb0b4beb JB	270	nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
6829c878	271	if (wdev->sme_state == CFG80211_SME_CONNECTING)
667503dd JB	272	__cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
667503dd JB	273	WLAN_STATUS_UNSPECIFIED_FAILURE,
df7fc0f9	274	false, NULL);
19957bb3 JB	275
	276	for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
	277	if (wdev->authtry_bsses[i] &&
	278	memcmp(wdev->authtry_bsses[i]->pub.bssid,
	279	addr, ETH_ALEN) == 0) {
	280	cfg80211_unhold_bss(wdev->authtry_bsses[i]);
	281	cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
	282	wdev->authtry_bsses[i] = NULL;
	283	done = true;
	284	break;
	285	}
	286	}
	287
	288	WARN_ON(!done);
667503dd JB	289
667503dd JB	290	wdev_unlock(wdev);
1965c853 JM	291	}
	292	EXPORT_SYMBOL(cfg80211_send_auth_timeout);
	293
cb0b4beb	294	void cfg80211_send_assoc_timeout(struct net_device dev, const u8 addr)
1965c853	295	{
6829c878 JB	296	struct wireless_dev *wdev = dev->ieee80211_ptr;
6829c878 JB	297	struct wiphy *wiphy = wdev->wiphy;
1965c853	298	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
19957bb3 JB	299	int i;
	300	bool done = false;
	301
667503dd	302	wdev_lock(wdev);
cb0b4beb JB	303
cb0b4beb JB	304	nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
6829c878	305	if (wdev->sme_state == CFG80211_SME_CONNECTING)
667503dd JB	306	__cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
667503dd JB	307	WLAN_STATUS_UNSPECIFIED_FAILURE,
df7fc0f9	308	false, NULL);
19957bb3 JB	309
	310	for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
	311	if (wdev->auth_bsses[i] &&
	312	memcmp(wdev->auth_bsses[i]->pub.bssid,
	313	addr, ETH_ALEN) == 0) {
	314	cfg80211_unhold_bss(wdev->auth_bsses[i]);
	315	cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
	316	wdev->auth_bsses[i] = NULL;
	317	done = true;
	318	break;
	319	}
	320	}
	321
	322	WARN_ON(!done);
667503dd JB	323
667503dd JB	324	wdev_unlock(wdev);
1965c853 JM	325	}
	326	EXPORT_SYMBOL(cfg80211_send_assoc_timeout);
	327
a3b8b056 JM	328	void cfg80211_michael_mic_failure(struct net_device dev, const u8 addr,
a3b8b056 JM	329	enum nl80211_key_type key_type, int key_id,
e6d6e342	330	const u8 *tsc, gfp_t gfp)
a3b8b056 JM	331	{
	332	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
	333	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
f58d4ed9 JB	334	#ifdef CONFIG_WIRELESS_EXT
f58d4ed9 JB	335	union iwreq_data wrqu;
e6d6e342	336	char *buf = kmalloc(128, gfp);
f58d4ed9 JB	337
	338	if (buf) {
	339	sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
	340	"keyid=%d %scast addr=%pM)", key_id,
	341	key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni",
	342	addr);
	343	memset(&wrqu, 0, sizeof(wrqu));
	344	wrqu.data.length = strlen(buf);
	345	wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
	346	kfree(buf);
	347	}
	348	#endif
	349
e6d6e342	350	nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
a3b8b056 JM	351	}
a3b8b056 JM	352	EXPORT_SYMBOL(cfg80211_michael_mic_failure);
19957bb3 JB	353
19957bb3 JB	354	/* some MLME handling for userspace SME */
667503dd JB	355	int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
	356	struct net_device *dev,
	357	struct ieee80211_channel *chan,
	358	enum nl80211_auth_type auth_type,
	359	const u8 *bssid,
	360	const u8 *ssid, int ssid_len,
fffd0934 JB	361	const u8 *ie, int ie_len,
fffd0934 JB	362	const u8 *key, int key_len, int key_idx)
19957bb3 JB	363	{
	364	struct wireless_dev *wdev = dev->ieee80211_ptr;
	365	struct cfg80211_auth_request req;
	366	struct cfg80211_internal_bss *bss;
	367	int i, err, slot = -1, nfree = 0;
	368
667503dd JB	369	ASSERT_WDEV_LOCK(wdev);
667503dd JB	370
fffd0934 JB	371	if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
	372	if (!key \|\| !key_len \|\| key_idx < 0 \|\| key_idx > 4)
	373	return -EINVAL;
	374
0a9b5e17 JB	375	if (wdev->current_bss &&
	376	memcmp(bssid, wdev->current_bss->pub.bssid, ETH_ALEN) == 0)
	377	return -EALREADY;
	378
	379	for (i = 0; i < MAX_AUTH_BSSES; i++) {
	380	if (wdev->authtry_bsses[i] &&
	381	memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid,
	382	ETH_ALEN) == 0)
	383	return -EALREADY;
	384	if (wdev->auth_bsses[i] &&
	385	memcmp(bssid, wdev->auth_bsses[i]->pub.bssid,
	386	ETH_ALEN) == 0)
	387	return -EALREADY;
	388	}
	389
19957bb3 JB	390	memset(&req, 0, sizeof(req));
	391
	392	req.ie = ie;
	393	req.ie_len = ie_len;
	394	req.auth_type = auth_type;
	395	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
	396	WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
fffd0934 JB	397	req.key = key;
	398	req.key_len = key_len;
	399	req.key_idx = key_idx;
19957bb3 JB	400	if (!req.bss)
	401	return -ENOENT;
	402
	403	bss = bss_from_pub(req.bss);
	404
19957bb3 JB	405	for (i = 0; i < MAX_AUTH_BSSES; i++) {
	406	if (!wdev->auth_bsses[i] && !wdev->authtry_bsses[i]) {
	407	slot = i;
	408	nfree++;
	409	}
	410	}
	411
	412	/* we need one free slot for disassoc and one for this auth */
	413	if (nfree < 2) {
	414	err = -ENOSPC;
	415	goto out;
	416	}
	417
	418	wdev->authtry_bsses[slot] = bss;
	419	cfg80211_hold_bss(bss);
	420
	421	err = rdev->ops->auth(&rdev->wiphy, dev, &req);
	422	if (err) {
	423	wdev->authtry_bsses[slot] = NULL;
	424	cfg80211_unhold_bss(bss);
	425	}
	426
	427	out:
	428	if (err)
	429	cfg80211_put_bss(req.bss);
	430	return err;
	431	}
	432
667503dd JB	433	int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
	434	struct net_device dev, struct ieee80211_channel chan,
	435	enum nl80211_auth_type auth_type, const u8 *bssid,
	436	const u8 *ssid, int ssid_len,
fffd0934 JB	437	const u8 *ie, int ie_len,
fffd0934 JB	438	const u8 *key, int key_len, int key_idx)
667503dd JB	439	{
	440	int err;
	441
	442	wdev_lock(dev->ieee80211_ptr);
	443	err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
fffd0934 JB	444	ssid, ssid_len, ie, ie_len,
fffd0934 JB	445	key, key_len, key_idx);
667503dd JB	446	wdev_unlock(dev->ieee80211_ptr);
	447
	448	return err;
	449	}
	450
	451	int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
	452	struct net_device *dev,
	453	struct ieee80211_channel *chan,
	454	const u8 bssid, const u8 prev_bssid,
	455	const u8 *ssid, int ssid_len,
	456	const u8 *ie, int ie_len, bool use_mfp,
	457	struct cfg80211_crypto_settings *crypt)
19957bb3 JB	458	{
	459	struct wireless_dev *wdev = dev->ieee80211_ptr;
	460	struct cfg80211_assoc_request req;
	461	struct cfg80211_internal_bss *bss;
	462	int i, err, slot = -1;
	463
667503dd JB	464	ASSERT_WDEV_LOCK(wdev);
667503dd JB	465
19957bb3 JB	466	memset(&req, 0, sizeof(req));
	467
	468	if (wdev->current_bss)
	469	return -EALREADY;
	470
	471	req.ie = ie;
	472	req.ie_len = ie_len;
	473	memcpy(&req.crypto, crypt, sizeof(req.crypto));
	474	req.use_mfp = use_mfp;
3e5d7649	475	req.prev_bssid = prev_bssid;
19957bb3 JB	476	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
	477	WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
	478	if (!req.bss)
	479	return -ENOENT;
	480
	481	bss = bss_from_pub(req.bss);
	482
	483	for (i = 0; i < MAX_AUTH_BSSES; i++) {
	484	if (bss == wdev->auth_bsses[i]) {
	485	slot = i;
	486	break;
	487	}
	488	}
	489
	490	if (slot < 0) {
	491	err = -ENOTCONN;
	492	goto out;
	493	}
	494
	495	err = rdev->ops->assoc(&rdev->wiphy, dev, &req);
	496	out:
	497	/* still a reference in wdev->auth_bsses[slot] */
	498	cfg80211_put_bss(req.bss);
	499	return err;
	500	}
	501
667503dd JB	502	int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
	503	struct net_device *dev,
	504	struct ieee80211_channel *chan,
	505	const u8 bssid, const u8 prev_bssid,
	506	const u8 *ssid, int ssid_len,
	507	const u8 *ie, int ie_len, bool use_mfp,
	508	struct cfg80211_crypto_settings *crypt)
	509	{
	510	struct wireless_dev *wdev = dev->ieee80211_ptr;
	511	int err;
	512
	513	wdev_lock(wdev);
	514	err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
	515	ssid, ssid_len, ie, ie_len, use_mfp, crypt);
	516	wdev_unlock(wdev);
	517
	518	return err;
	519	}
	520
	521	int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
	522	struct net_device dev, const u8 bssid,
	523	const u8 *ie, int ie_len, u16 reason)
19957bb3 JB	524	{
	525	struct wireless_dev *wdev = dev->ieee80211_ptr;
	526	struct cfg80211_deauth_request req;
	527	int i;
	528
667503dd JB	529	ASSERT_WDEV_LOCK(wdev);
667503dd JB	530
19957bb3 JB	531	memset(&req, 0, sizeof(req));
	532	req.reason_code = reason;
	533	req.ie = ie;
	534	req.ie_len = ie_len;
	535	if (wdev->current_bss &&
	536	memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
	537	req.bss = &wdev->current_bss->pub;
	538	} else for (i = 0; i < MAX_AUTH_BSSES; i++) {
	539	if (wdev->auth_bsses[i] &&
	540	memcmp(bssid, wdev->auth_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
	541	req.bss = &wdev->auth_bsses[i]->pub;
	542	break;
	543	}
	544	if (wdev->authtry_bsses[i] &&
	545	memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
	546	req.bss = &wdev->authtry_bsses[i]->pub;
	547	break;
	548	}
	549	}
	550
	551	if (!req.bss)
	552	return -ENOTCONN;
	553
667503dd	554	return rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
19957bb3 JB	555	}
19957bb3 JB	556
667503dd JB	557	int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
	558	struct net_device dev, const u8 bssid,
	559	const u8 *ie, int ie_len, u16 reason)
	560	{
	561	struct wireless_dev *wdev = dev->ieee80211_ptr;
	562	int err;
	563
	564	wdev_lock(wdev);
	565	err = __cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason);
	566	wdev_unlock(wdev);
	567
	568	return err;
	569	}
	570
	571	static int __cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
	572	struct net_device dev, const u8 bssid,
	573	const u8 *ie, int ie_len, u16 reason)
19957bb3 JB	574	{
	575	struct wireless_dev *wdev = dev->ieee80211_ptr;
	576	struct cfg80211_disassoc_request req;
	577
667503dd JB	578	ASSERT_WDEV_LOCK(wdev);
667503dd JB	579
f9d6b402 JB	580	if (wdev->sme_state != CFG80211_SME_CONNECTED)
	581	return -ENOTCONN;
	582
	583	if (WARN_ON(!wdev->current_bss))
	584	return -ENOTCONN;
	585
19957bb3 JB	586	memset(&req, 0, sizeof(req));
	587	req.reason_code = reason;
	588	req.ie = ie;
	589	req.ie_len = ie_len;
	590	if (memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0)
	591	req.bss = &wdev->current_bss->pub;
	592	else
	593	return -ENOTCONN;
	594
667503dd JB	595	return rdev->ops->disassoc(&rdev->wiphy, dev, &req, wdev);
	596	}
	597
	598	int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
	599	struct net_device dev, const u8 bssid,
	600	const u8 *ie, int ie_len, u16 reason)
	601	{
	602	struct wireless_dev *wdev = dev->ieee80211_ptr;
	603	int err;
	604
	605	wdev_lock(wdev);
	606	err = __cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason);
	607	wdev_unlock(wdev);
	608
	609	return err;
19957bb3 JB	610	}
	611
	612	void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
	613	struct net_device *dev)
	614	{
	615	struct wireless_dev *wdev = dev->ieee80211_ptr;
	616	struct cfg80211_deauth_request req;
	617	int i;
	618
667503dd JB	619	ASSERT_WDEV_LOCK(wdev);
667503dd JB	620
19957bb3 JB	621	if (!rdev->ops->deauth)
	622	return;
	623
	624	memset(&req, 0, sizeof(req));
	625	req.reason_code = WLAN_REASON_DEAUTH_LEAVING;
	626	req.ie = NULL;
	627	req.ie_len = 0;
	628
	629	if (wdev->current_bss) {
	630	req.bss = &wdev->current_bss->pub;
667503dd	631	rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
19957bb3 JB	632	if (wdev->current_bss) {
	633	cfg80211_unhold_bss(wdev->current_bss);
	634	cfg80211_put_bss(&wdev->current_bss->pub);
	635	wdev->current_bss = NULL;
	636	}
	637	}
	638
	639	for (i = 0; i < MAX_AUTH_BSSES; i++) {
	640	if (wdev->auth_bsses[i]) {
	641	req.bss = &wdev->auth_bsses[i]->pub;
667503dd	642	rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
19957bb3 JB	643	if (wdev->auth_bsses[i]) {
	644	cfg80211_unhold_bss(wdev->auth_bsses[i]);
	645	cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
	646	wdev->auth_bsses[i] = NULL;
	647	}
	648	}
	649	if (wdev->authtry_bsses[i]) {
	650	req.bss = &wdev->authtry_bsses[i]->pub;
667503dd	651	rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
19957bb3 JB	652	if (wdev->authtry_bsses[i]) {
	653	cfg80211_unhold_bss(wdev->authtry_bsses[i]);
	654	cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
	655	wdev->authtry_bsses[i] = NULL;
	656	}
	657	}
	658	}
	659	}