blob: 2a33d8bc886b3abf1a843a7492b21f0b19d622cd [file] [log] [blame]
Johannes Berg704232c2007-04-23 12:20:05 -07001/*
2 * Wireless configuration interface internals.
3 *
Johannes Berg08645122009-05-11 13:54:58 +02004 * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net>
Johannes Berg704232c2007-04-23 12:20:05 -07005 */
6#ifndef __NET_WIRELESS_CORE_H
7#define __NET_WIRELESS_CORE_H
8#include <linux/mutex.h>
9#include <linux/list.h>
10#include <linux/netdevice.h>
Johannes Berg2a519312009-02-10 21:25:55 +010011#include <linux/kref.h>
12#include <linux/rbtree.h>
Luis R. Rodriguez1ac61302009-05-02 00:37:21 -040013#include <linux/debugfs.h>
Johannes Berg1f87f7d2009-06-02 13:01:41 +020014#include <linux/rfkill.h>
15#include <linux/workqueue.h>
Johannes Berg704232c2007-04-23 12:20:05 -070016#include <net/genetlink.h>
Johannes Berg704232c2007-04-23 12:20:05 -070017#include <net/cfg80211.h>
Luis R. Rodriguez3f2355c2008-11-12 14:22:02 -080018#include "reg.h"
Johannes Berg704232c2007-04-23 12:20:05 -070019
20struct cfg80211_registered_device {
David Kilroy3dcf6702009-05-16 23:13:46 +010021 const struct cfg80211_ops *ops;
Johannes Berg704232c2007-04-23 12:20:05 -070022 struct list_head list;
23 /* we hold this mutex during any call so that
24 * we cannot do multiple calls at once, and also
25 * to avoid the deregister call to proceed while
26 * any call is in progress */
27 struct mutex mtx;
28
Johannes Berg1f87f7d2009-06-02 13:01:41 +020029 /* rfkill support */
30 struct rfkill_ops rfkill_ops;
31 struct rfkill *rfkill;
32 struct work_struct rfkill_sync;
33
Luis R. Rodriguez3f2355c2008-11-12 14:22:02 -080034 /* ISO / IEC 3166 alpha2 for which this device is receiving
35 * country IEs on, this can help disregard country IEs from APs
36 * on the same alpha2 quickly. The alpha2 may differ from
37 * cfg80211_regdomain's alpha2 when an intersection has occurred.
38 * If the AP is reconfigured this can also be used to tell us if
39 * the country on the country IE changed. */
40 char country_ie_alpha2[2];
41
42 /* If a Country IE has been received this tells us the environment
43 * which its telling us its in. This defaults to ENVIRON_ANY */
44 enum environment_cap env;
45
Johannes Berg704232c2007-04-23 12:20:05 -070046 /* wiphy index, internal only */
Luis R. Rodriguezb5850a72009-02-21 00:04:19 -050047 int wiphy_idx;
Johannes Berg704232c2007-04-23 12:20:05 -070048
49 /* associate netdev list */
50 struct mutex devlist_mtx;
51 struct list_head netdev_list;
Johannes Bergf5ea9122009-08-07 16:17:38 +020052 int devlist_generation;
Johannes Bergad002392009-08-18 19:51:57 +020053 int opencount; /* also protected by devlist_mtx */
54 wait_queue_head_t dev_wait;
Johannes Berg704232c2007-04-23 12:20:05 -070055
Johannes Berg2a519312009-02-10 21:25:55 +010056 /* BSSes/scanning */
57 spinlock_t bss_lock;
58 struct list_head bss_list;
59 struct rb_root bss_tree;
60 u32 bss_generation;
61 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
Dan Williamscb3a8ee2009-02-11 17:14:43 -050062 unsigned long suspend_at;
Johannes Berg667503dd2009-07-07 03:56:11 +020063 struct work_struct scan_done_wk;
Johannes Berg2a519312009-02-10 21:25:55 +010064
Johannes Bergaff89a92009-07-01 21:26:51 +020065#ifdef CONFIG_NL80211_TESTMODE
66 struct genl_info *testmode_info;
67#endif
68
Johannes Berg6829c872009-07-02 09:13:27 +020069 struct work_struct conn_work;
Johannes Berg667503dd2009-07-07 03:56:11 +020070 struct work_struct event_work;
Johannes Berg6829c872009-07-02 09:13:27 +020071
Johannes Berg0e82ffe2009-07-27 12:01:50 +020072 /* current channel */
73 struct ieee80211_channel *channel;
74
Pavel Roskine43e8202009-05-18 21:43:52 -040075#ifdef CONFIG_CFG80211_DEBUGFS
Luis R. Rodriguez1ac61302009-05-02 00:37:21 -040076 /* Debugfs entries */
77 struct wiphy_debugfsdentries {
78 struct dentry *rts_threshold;
79 struct dentry *fragmentation_threshold;
80 struct dentry *short_retry_limit;
81 struct dentry *long_retry_limit;
Luis R. Rodriguez80a35112009-05-02 00:39:30 -040082 struct dentry *ht40allow_map;
Luis R. Rodriguez1ac61302009-05-02 00:37:21 -040083 } debugfs;
84#endif
85
Johannes Berg704232c2007-04-23 12:20:05 -070086 /* must be last because of the way we do wiphy_priv(),
87 * and it should at least be aligned to NETDEV_ALIGN */
88 struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
89};
90
91static inline
92struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
93{
94 BUG_ON(!wiphy);
95 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
96}
97
Luis R. Rodriguez85fd1292009-02-21 00:04:20 -050098/* Note 0 is valid, hence phy0 */
99static inline
100bool wiphy_idx_valid(int wiphy_idx)
101{
102 return (wiphy_idx >= 0);
103}
104
Luis R. Rodrigueza1794392009-02-21 00:04:21 -0500105extern struct mutex cfg80211_mutex;
Johannes Berg79c97e92009-07-07 03:56:12 +0200106extern struct list_head cfg80211_rdev_list;
Johannes Bergf5ea9122009-08-07 16:17:38 +0200107extern int cfg80211_rdev_list_generation;
Johannes Berg704232c2007-04-23 12:20:05 -0700108
Johannes Berg7edfab72009-04-11 13:32:46 +0200109#define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex))
Luis R. Rodriguez761cf7e2009-02-21 00:04:25 -0500110
Luis R. Rodriguez806a9e32009-02-21 00:04:26 -0500111/*
112 * You can use this to mark a wiphy_idx as not having an associated wiphy.
Johannes Berg79c97e92009-07-07 03:56:12 +0200113 * It guarantees cfg80211_rdev_by_wiphy_idx(wiphy_idx) will return NULL
Luis R. Rodriguez806a9e32009-02-21 00:04:26 -0500114 */
115#define WIPHY_IDX_STALE -1
116
Johannes Berg2a519312009-02-10 21:25:55 +0100117struct cfg80211_internal_bss {
118 struct list_head list;
119 struct rb_node rbn;
120 unsigned long ts;
121 struct kref ref;
Johannes Berg19957bb2009-07-02 17:20:43 +0200122 atomic_t hold;
123 bool ies_allocated;
Kalle Valoa08c1c12009-03-22 21:57:28 +0200124
Johannes Berg2a519312009-02-10 21:25:55 +0100125 /* must be last because of priv member */
126 struct cfg80211_bss pub;
127};
128
Johannes Berg19957bb2009-07-02 17:20:43 +0200129static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
130{
131 return container_of(pub, struct cfg80211_internal_bss, pub);
132}
133
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200134static inline void cfg80211_ref_bss(struct cfg80211_internal_bss *bss)
135{
136 kref_get(&bss->ref);
137}
138
Johannes Berg19957bb2009-07-02 17:20:43 +0200139static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
140{
141 atomic_inc(&bss->hold);
142}
143
144static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
145{
146 int r = atomic_dec_return(&bss->hold);
147 WARN_ON(r < 0);
148}
149
150
Johannes Berg79c97e92009-07-07 03:56:12 +0200151struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
Luis R. Rodriguez806a9e32009-02-21 00:04:26 -0500152int get_wiphy_idx(struct wiphy *wiphy);
153
Johannes Berg4bbf4d52009-03-24 09:35:46 +0100154struct cfg80211_registered_device *
Johannes Berg79c97e92009-07-07 03:56:12 +0200155__cfg80211_rdev_from_info(struct genl_info *info);
Johannes Berg4bbf4d52009-03-24 09:35:46 +0100156
Johannes Berg55682962007-09-20 13:09:35 -0400157/*
158 * This function returns a pointer to the driver
159 * that the genl_info item that is passed refers to.
160 * If successful, it returns non-NULL and also locks
161 * the driver's mutex!
162 *
Johannes Berg4d0c8ae2009-07-07 03:56:09 +0200163 * This means that you need to call cfg80211_unlock_rdev()
Luis R. Rodrigueza1794392009-02-21 00:04:21 -0500164 * before being allowed to acquire &cfg80211_mutex!
Johannes Berg55682962007-09-20 13:09:35 -0400165 *
166 * This is necessary because we need to lock the global
167 * mutex to get an item off the list safely, and then
Johannes Berg79c97e92009-07-07 03:56:12 +0200168 * we lock the rdev mutex so it doesn't go away under us.
Johannes Berg55682962007-09-20 13:09:35 -0400169 *
Luis R. Rodrigueza1794392009-02-21 00:04:21 -0500170 * We don't want to keep cfg80211_mutex locked
Johannes Berg55682962007-09-20 13:09:35 -0400171 * for all the time in order to allow requests on
172 * other interfaces to go through at the same time.
173 *
174 * The result of this can be a PTR_ERR and hence must
175 * be checked with IS_ERR() for errors.
176 */
177extern struct cfg80211_registered_device *
178cfg80211_get_dev_from_info(struct genl_info *info);
179
Johannes Berg79c97e92009-07-07 03:56:12 +0200180/* requires cfg80211_rdev_mutex to be held! */
Luis R. Rodriguez806a9e32009-02-21 00:04:26 -0500181struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
182
Johannes Berg55682962007-09-20 13:09:35 -0400183/* identical to cfg80211_get_dev_from_info but only operate on ifindex */
184extern struct cfg80211_registered_device *
Johannes Berg463d0182009-07-14 00:33:35 +0200185cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);
186
187int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
188 struct net *net);
Johannes Berg55682962007-09-20 13:09:35 -0400189
Johannes Berg79c97e92009-07-07 03:56:12 +0200190static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
Johannes Berg667503dd2009-07-07 03:56:11 +0200191{
Johannes Berg79c97e92009-07-07 03:56:12 +0200192 mutex_lock(&rdev->mtx);
Johannes Berg667503dd2009-07-07 03:56:11 +0200193}
194
Johannes Berg79c97e92009-07-07 03:56:12 +0200195static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
Johannes Berg4d0c8ae2009-07-07 03:56:09 +0200196{
Johannes Berg79c97e92009-07-07 03:56:12 +0200197 BUG_ON(IS_ERR(rdev) || !rdev);
198 mutex_unlock(&rdev->mtx);
Johannes Berg4d0c8ae2009-07-07 03:56:09 +0200199}
Johannes Berg55682962007-09-20 13:09:35 -0400200
Johannes Berg667503dd2009-07-07 03:56:11 +0200201static inline void wdev_lock(struct wireless_dev *wdev)
202 __acquires(wdev)
203{
204 mutex_lock(&wdev->mtx);
205 __acquire(wdev->mtx);
206}
207
208static inline void wdev_unlock(struct wireless_dev *wdev)
209 __releases(wdev)
210{
211 __release(wdev->mtx);
212 mutex_unlock(&wdev->mtx);
213}
214
215#define ASSERT_RDEV_LOCK(rdev) WARN_ON(!mutex_is_locked(&(rdev)->mtx));
216#define ASSERT_WDEV_LOCK(wdev) WARN_ON(!mutex_is_locked(&(wdev)->mtx));
217
218enum cfg80211_event_type {
219 EVENT_CONNECT_RESULT,
220 EVENT_ROAMED,
221 EVENT_DISCONNECTED,
222 EVENT_IBSS_JOINED,
223};
224
225struct cfg80211_event {
226 struct list_head list;
227 enum cfg80211_event_type type;
228
229 union {
230 struct {
231 u8 bssid[ETH_ALEN];
232 const u8 *req_ie;
233 const u8 *resp_ie;
234 size_t req_ie_len;
235 size_t resp_ie_len;
236 u16 status;
237 } cr;
238 struct {
239 u8 bssid[ETH_ALEN];
240 const u8 *req_ie;
241 const u8 *resp_ie;
242 size_t req_ie_len;
243 size_t resp_ie_len;
244 } rm;
245 struct {
246 const u8 *ie;
247 size_t ie_len;
248 u16 reason;
249 } dc;
250 struct {
251 u8 bssid[ETH_ALEN];
252 } ij;
253 };
254};
255
Johannes Bergfffd0932009-07-08 14:22:54 +0200256struct cfg80211_cached_keys {
257 struct key_params params[6];
258 u8 data[6][WLAN_MAX_KEY_LEN];
259 int def, defmgmt;
260};
261
Johannes Berg667503dd2009-07-07 03:56:11 +0200262
Johannes Berg704232c2007-04-23 12:20:05 -0700263/* free object */
Johannes Berg79c97e92009-07-07 03:56:12 +0200264extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
Johannes Berg704232c2007-04-23 12:20:05 -0700265
Johannes Berg79c97e92009-07-07 03:56:12 +0200266extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
Johannes Berg55682962007-09-20 13:09:35 -0400267 char *newname);
268
Johannes Berg8318d782008-01-24 19:38:38 +0100269void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
Luis R. Rodriguez7db90f42009-03-09 22:07:41 -0400270void wiphy_update_regulatory(struct wiphy *wiphy,
271 enum nl80211_reg_initiator setby);
Johannes Berg8318d782008-01-24 19:38:38 +0100272
Johannes Berg2a519312009-02-10 21:25:55 +0100273void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
Dan Williamscb3a8ee2009-02-11 17:14:43 -0500274void cfg80211_bss_age(struct cfg80211_registered_device *dev,
275 unsigned long age_secs);
Johannes Berg2a519312009-02-10 21:25:55 +0100276
Johannes Berg04a773a2009-04-19 21:24:32 +0200277/* IBSS */
Johannes Berg667503dd2009-07-07 03:56:11 +0200278int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
279 struct net_device *dev,
Johannes Bergfffd0932009-07-08 14:22:54 +0200280 struct cfg80211_ibss_params *params,
281 struct cfg80211_cached_keys *connkeys);
Johannes Berg04a773a2009-04-19 21:24:32 +0200282int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
283 struct net_device *dev,
Johannes Bergfffd0932009-07-08 14:22:54 +0200284 struct cfg80211_ibss_params *params,
285 struct cfg80211_cached_keys *connkeys);
Johannes Berg9d308422009-04-20 18:43:46 +0200286void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
Johannes Berg04a773a2009-04-19 21:24:32 +0200287int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
Johannes Berg9d308422009-04-20 18:43:46 +0200288 struct net_device *dev, bool nowext);
Johannes Berg667503dd2009-07-07 03:56:11 +0200289void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
Johannes Bergfffd0932009-07-08 14:22:54 +0200290int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
291 struct wireless_dev *wdev);
Johannes Berg04a773a2009-04-19 21:24:32 +0200292
Johannes Berg19957bb2009-07-02 17:20:43 +0200293/* MLME */
Johannes Berg667503dd2009-07-07 03:56:11 +0200294int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
295 struct net_device *dev,
296 struct ieee80211_channel *chan,
297 enum nl80211_auth_type auth_type,
298 const u8 *bssid,
299 const u8 *ssid, int ssid_len,
Johannes Bergfffd0932009-07-08 14:22:54 +0200300 const u8 *ie, int ie_len,
301 const u8 *key, int key_len, int key_idx);
Johannes Berg19957bb2009-07-02 17:20:43 +0200302int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
303 struct net_device *dev, struct ieee80211_channel *chan,
304 enum nl80211_auth_type auth_type, const u8 *bssid,
305 const u8 *ssid, int ssid_len,
Johannes Bergfffd0932009-07-08 14:22:54 +0200306 const u8 *ie, int ie_len,
307 const u8 *key, int key_len, int key_idx);
Johannes Berg667503dd2009-07-07 03:56:11 +0200308int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
309 struct net_device *dev,
310 struct ieee80211_channel *chan,
311 const u8 *bssid, const u8 *prev_bssid,
312 const u8 *ssid, int ssid_len,
313 const u8 *ie, int ie_len, bool use_mfp,
314 struct cfg80211_crypto_settings *crypt);
Johannes Berg19957bb2009-07-02 17:20:43 +0200315int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
316 struct net_device *dev, struct ieee80211_channel *chan,
Johannes Berg3e5d7642009-07-07 14:37:26 +0200317 const u8 *bssid, const u8 *prev_bssid,
318 const u8 *ssid, int ssid_len,
Johannes Berg19957bb2009-07-02 17:20:43 +0200319 const u8 *ie, int ie_len, bool use_mfp,
320 struct cfg80211_crypto_settings *crypt);
Johannes Berg667503dd2009-07-07 03:56:11 +0200321int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
322 struct net_device *dev, const u8 *bssid,
323 const u8 *ie, int ie_len, u16 reason);
Johannes Berg19957bb2009-07-02 17:20:43 +0200324int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
325 struct net_device *dev, const u8 *bssid,
326 const u8 *ie, int ie_len, u16 reason);
327int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
328 struct net_device *dev, const u8 *bssid,
329 const u8 *ie, int ie_len, u16 reason);
330void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
331 struct net_device *dev);
Johannes Berg667503dd2009-07-07 03:56:11 +0200332void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
333 const u8 *req_ie, size_t req_ie_len,
334 const u8 *resp_ie, size_t resp_ie_len,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200335 u16 status, bool wextev,
336 struct cfg80211_bss *bss);
Johannes Berg19957bb2009-07-02 17:20:43 +0200337
Samuel Ortizb23aa672009-07-01 21:26:54 +0200338/* SME */
Johannes Berg667503dd2009-07-07 03:56:11 +0200339int __cfg80211_connect(struct cfg80211_registered_device *rdev,
340 struct net_device *dev,
Johannes Bergfffd0932009-07-08 14:22:54 +0200341 struct cfg80211_connect_params *connect,
Johannes Bergf401a6f2009-08-07 14:51:05 +0200342 struct cfg80211_cached_keys *connkeys,
343 const u8 *prev_bssid);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200344int cfg80211_connect(struct cfg80211_registered_device *rdev,
345 struct net_device *dev,
Johannes Bergfffd0932009-07-08 14:22:54 +0200346 struct cfg80211_connect_params *connect,
347 struct cfg80211_cached_keys *connkeys);
Johannes Berg667503dd2009-07-07 03:56:11 +0200348int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
349 struct net_device *dev, u16 reason,
350 bool wextev);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200351int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
Johannes Bergf2129352009-07-01 21:26:56 +0200352 struct net_device *dev, u16 reason,
353 bool wextev);
Johannes Berg667503dd2009-07-07 03:56:11 +0200354void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid,
355 const u8 *req_ie, size_t req_ie_len,
356 const u8 *resp_ie, size_t resp_ie_len);
Johannes Bergfffd0932009-07-08 14:22:54 +0200357int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
358 struct wireless_dev *wdev);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200359
Johannes Berg6829c872009-07-02 09:13:27 +0200360void cfg80211_conn_work(struct work_struct *work);
Johannes Bergf401a6f2009-08-07 14:51:05 +0200361bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200362
Johannes Berg08645122009-05-11 13:54:58 +0200363/* internal helpers */
Johannes Bergfffd0932009-07-08 14:22:54 +0200364int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
365 struct key_params *params, int key_idx,
Johannes Berg08645122009-05-11 13:54:58 +0200366 const u8 *mac_addr);
Johannes Berg667503dd2009-07-07 03:56:11 +0200367void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
Johannes Berg6829c872009-07-02 09:13:27 +0200368 size_t ie_len, u16 reason, bool from_ap);
369void cfg80211_sme_scan_done(struct net_device *dev);
370void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
Johannes Berg19957bb2009-07-02 17:20:43 +0200371void cfg80211_sme_disassoc(struct net_device *dev, int idx);
Johannes Berg667503dd2009-07-07 03:56:11 +0200372void __cfg80211_scan_done(struct work_struct *wk);
Johannes Berg01a0ac42009-08-20 21:36:16 +0200373void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
Johannes Bergfffd0932009-07-08 14:22:54 +0200374void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
Johannes Berg3d54d252009-08-21 14:51:05 +0200375int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
376 struct net_device *dev, enum nl80211_iftype ntype,
377 u32 *flags, struct vif_params *params);
378void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
Johannes Berg08645122009-05-11 13:54:58 +0200379
Johannes Berg59bbb6f2009-08-07 17:22:35 +0200380struct ieee80211_channel *
381rdev_fixed_channel(struct cfg80211_registered_device *rdev,
382 struct wireless_dev *for_wdev);
383int rdev_set_freq(struct cfg80211_registered_device *rdev,
Johannes Berg4b181142009-08-08 11:03:58 +0200384 struct wireless_dev *for_wdev,
Johannes Berg59bbb6f2009-08-07 17:22:35 +0200385 int freq, enum nl80211_channel_type channel_type);
386
Johannes Bergf7969962009-08-21 12:23:49 +0200387#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
388#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
389#else
390/*
391 * Trick to enable using it as a condition,
392 * and also not give a warning when it's
393 * not used that way.
394 */
395#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
396#endif
397
Johannes Berg704232c2007-04-23 12:20:05 -0700398#endif /* __NET_WIRELESS_CORE_H */