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Jiri Bencf0706e82007-05-05 11:45:53 -07001/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
Jouni Malinen026331c2010-02-15 12:53:10 +02005 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
Jiri Bencf0706e82007-05-05 11:45:53 -07006 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#ifndef IEEE80211_I_H
13#define IEEE80211_I_H
14
15#include <linux/kernel.h>
16#include <linux/device.h>
17#include <linux/if_ether.h>
18#include <linux/interrupt.h>
19#include <linux/list.h>
20#include <linux/netdevice.h>
21#include <linux/skbuff.h>
22#include <linux/workqueue.h>
23#include <linux/types.h>
24#include <linux/spinlock.h>
Johannes Berg571ecf62007-07-27 15:43:22 +020025#include <linux/etherdevice.h>
Johannes Berge1e54062010-11-30 08:58:45 +010026#include <linux/leds.h>
Johannes Bergfe7a5d52009-11-18 18:42:47 +010027#include <net/ieee80211_radiotap.h>
colin@cozybit.com93da9cc2008-10-21 12:03:48 -070028#include <net/cfg80211.h>
David S. Miller51cb6db2008-07-15 03:34:57 -070029#include <net/mac80211.h>
Johannes Berg2c8dccc2008-04-08 15:14:40 -040030#include "key.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070031#include "sta_info.h"
32
Johannes Berg9cfb0002008-04-03 15:17:31 +020033struct ieee80211_local;
Jiri Bencf0706e82007-05-05 11:45:53 -070034
35/* Maximum number of broadcast/multicast frames to buffer when some of the
36 * associated stations are using power saving. */
37#define AP_MAX_BC_BUFFER 128
38
39/* Maximum number of frames buffered to all STAs, including multicast frames.
40 * Note: increasing this limit increases the potential memory requirement. Each
41 * frame can be up to about 2 kB long. */
42#define TOTAL_MAX_TX_BUFFER 512
43
44/* Required encryption head and tailroom */
45#define IEEE80211_ENCRYPT_HEADROOM 8
Jouni Malinen765cb462009-01-08 13:32:01 +020046#define IEEE80211_ENCRYPT_TAILROOM 18
Jiri Bencf0706e82007-05-05 11:45:53 -070047
48/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
49 * reception of at least three fragmented frames. This limit can be increased
50 * by changing this define, at the cost of slower frame reassembly and
51 * increased memory use (about 2 kB of RAM per entry). */
52#define IEEE80211_FRAGMENT_MAX 4
53
Johannes Berg20ad19d2009-02-10 21:25:45 +010054#define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
55
Kalle Valoab133152010-01-12 10:42:31 +020056#define IEEE80211_DEFAULT_UAPSD_QUEUES \
57 (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \
58 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \
59 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \
60 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
61
62#define IEEE80211_DEFAULT_MAX_SP_LEN \
63 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
64
Jiri Bencf0706e82007-05-05 11:45:53 -070065struct ieee80211_fragment_entry {
66 unsigned long first_frag_time;
67 unsigned int seq;
68 unsigned int rx_queue;
69 unsigned int last_frag;
70 unsigned int extra_len;
71 struct sk_buff_head skb_list;
72 int ccmp; /* Whether fragments were encrypted with CCMP */
73 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
74};
75
76
Johannes Bergc2b13452008-09-11 00:01:55 +020077struct ieee80211_bss {
Johannes Berg00d3f142009-02-10 21:26:00 +010078 /* don't want to look up all the time */
Johannes Berg056cdd52008-03-26 23:21:47 +010079 size_t ssid_len;
Jiri Bencf0706e82007-05-05 11:45:53 -070080 u8 ssid[IEEE80211_MAX_SSID_LEN];
Johannes Berg00d3f142009-02-10 21:26:00 +010081
Emmanuel Grumbach98f7dfd2008-07-18 13:52:59 +080082 u8 dtim_period;
Johannes Berg00d3f142009-02-10 21:26:00 +010083
Jouni Malinen43ac2ca2008-08-15 22:21:27 +030084 bool wmm_used;
Kalle Valoab133152010-01-12 10:42:31 +020085 bool uapsd_supported;
Johannes Berg00d3f142009-02-10 21:26:00 +010086
87 unsigned long last_probe_resp;
88
Luis Carlos Coboee385852008-02-23 15:17:11 +010089#ifdef CONFIG_MAC80211_MESH
90 u8 *mesh_id;
91 size_t mesh_id_len;
John W. Linville24736702008-04-08 14:15:46 -040092 u8 *mesh_cfg;
Johannes Berg902acc72008-02-23 15:17:19 +010093#endif
Johannes Berg00d3f142009-02-10 21:26:00 +010094
Jiri Bencf0706e82007-05-05 11:45:53 -070095#define IEEE80211_MAX_SUPP_RATES 32
96 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
97 size_t supp_rates_len;
Jiri Bencf0706e82007-05-05 11:45:53 -070098
Johannes Berg00d3f142009-02-10 21:26:00 +010099 /*
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300100 * During association, we save an ERP value from a probe response so
Daniel Drake56282212007-07-10 19:32:10 +0200101 * that we can feed ERP info to the driver when handling the
102 * association completes. these fields probably won't be up-to-date
Johannes Berg00d3f142009-02-10 21:26:00 +0100103 * otherwise, you probably don't want to use them.
104 */
105 bool has_erp_value;
Daniel Drake56282212007-07-10 19:32:10 +0200106 u8 erp_value;
Jiri Bencf0706e82007-05-05 11:45:53 -0700107};
108
Johannes Bergc2b13452008-09-11 00:01:55 +0200109static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100110{
111#ifdef CONFIG_MAC80211_MESH
112 return bss->mesh_cfg;
113#endif
114 return NULL;
115}
116
Johannes Bergc2b13452008-09-11 00:01:55 +0200117static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100118{
119#ifdef CONFIG_MAC80211_MESH
120 return bss->mesh_id;
121#endif
122 return NULL;
123}
124
Johannes Bergc2b13452008-09-11 00:01:55 +0200125static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100126{
127#ifdef CONFIG_MAC80211_MESH
128 return bss->mesh_id_len;
129#endif
130 return 0;
131}
132
Jiri Bencf0706e82007-05-05 11:45:53 -0700133
Johannes Berg9ae54c82008-01-31 19:48:20 +0100134typedef unsigned __bitwise__ ieee80211_tx_result;
135#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
136#define TX_DROP ((__force ieee80211_tx_result) 1u)
137#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
138
Johannes Berg5cf121c2008-02-25 16:27:43 +0100139#define IEEE80211_TX_FRAGMENTED BIT(0)
140#define IEEE80211_TX_UNICAST BIT(1)
141#define IEEE80211_TX_PS_BUFFERED BIT(2)
Johannes Berg9ae54c82008-01-31 19:48:20 +0100142
Johannes Berg5cf121c2008-02-25 16:27:43 +0100143struct ieee80211_tx_data {
Jiri Bencf0706e82007-05-05 11:45:53 -0700144 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700145 struct ieee80211_local *local;
146 struct ieee80211_sub_if_data *sdata;
147 struct sta_info *sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700148 struct ieee80211_key *key;
Jiri Bencf0706e82007-05-05 11:45:53 -0700149
Johannes Berg5cf121c2008-02-25 16:27:43 +0100150 struct ieee80211_channel *channel;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100151
Harvey Harrisona4b7d7b2008-07-15 18:44:14 -0700152 u16 ethertype;
Johannes Berg056cdd52008-03-26 23:21:47 +0100153 unsigned int flags;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100154};
155
156
157typedef unsigned __bitwise__ ieee80211_rx_result;
158#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
159#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
160#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
161#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
162
Johannes Berg554891e2010-09-24 12:38:25 +0200163/**
164 * enum ieee80211_packet_rx_flags - packet RX flags
165 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
166 * (incl. multicast frames)
167 * @IEEE80211_RX_IN_SCAN: received while scanning
168 * @IEEE80211_RX_FRAGMENTED: fragmented frame
169 * @IEEE80211_RX_AMSDU: a-MSDU packet
170 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
Christian Lamparter4cfda472010-12-27 23:21:26 +0100171 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
Johannes Berg554891e2010-09-24 12:38:25 +0200172 *
173 * These are per-frame flags that are attached to a frame in the
174 * @rx_flags field of &struct ieee80211_rx_status.
175 */
176enum ieee80211_packet_rx_flags {
177 IEEE80211_RX_IN_SCAN = BIT(0),
178 IEEE80211_RX_RA_MATCH = BIT(1),
179 IEEE80211_RX_FRAGMENTED = BIT(2),
180 IEEE80211_RX_AMSDU = BIT(3),
181 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
Christian Lamparter4cfda472010-12-27 23:21:26 +0100182 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
Johannes Berg554891e2010-09-24 12:38:25 +0200183};
184
185/**
186 * enum ieee80211_rx_flags - RX data flags
187 *
188 * @IEEE80211_RX_CMNTR: received on cooked monitor already
189 *
190 * These flags are used across handling multiple interfaces
191 * for a single frame.
192 */
193enum ieee80211_rx_flags {
194 IEEE80211_RX_CMNTR = BIT(0),
195};
Johannes Berg5cf121c2008-02-25 16:27:43 +0100196
197struct ieee80211_rx_data {
198 struct sk_buff *skb;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100199 struct ieee80211_local *local;
200 struct ieee80211_sub_if_data *sdata;
201 struct sta_info *sta;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100202 struct ieee80211_key *key;
Johannes Berg056cdd52008-03-26 23:21:47 +0100203
Johannes Berg056cdd52008-03-26 23:21:47 +0100204 unsigned int flags;
Johannes Berg9e262972011-07-07 18:45:03 +0200205
206 /*
207 * Index into sequence numbers array, 0..16
208 * since the last (16) is used for non-QoS,
209 * will be 16 on non-QoS frames.
210 */
211 int seqno_idx;
212
213 /*
214 * Index into the security IV/PN arrays, 0..16
215 * since the last (16) is used for CCMP-encrypted
216 * management frames, will be set to 16 on mgmt
217 * frames and 0 on non-QoS frames.
218 */
219 int security_idx;
220
Johannes Berg5cf121c2008-02-25 16:27:43 +0100221 u32 tkip_iv32;
222 u16 tkip_iv16;
Jiri Bencf0706e82007-05-05 11:45:53 -0700223};
224
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100225struct beacon_data {
226 u8 *head, *tail;
227 int head_len, tail_len;
228 int dtim_period;
229};
230
Jiri Bencf0706e82007-05-05 11:45:53 -0700231struct ieee80211_if_ap {
Johannes Berg40b275b2011-05-13 14:15:49 +0200232 struct beacon_data __rcu *beacon;
Jiri Bencf0706e82007-05-05 11:45:53 -0700233
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400234 struct list_head vlans;
235
Jiri Bencf0706e82007-05-05 11:45:53 -0700236 /* yes, this looks ugly, but guarantees that we can later use
237 * bitmap_empty :)
Johannes Berg004c8722008-02-20 11:21:35 +0100238 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
Jiri Bencf0706e82007-05-05 11:45:53 -0700239 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
Jiri Bencf0706e82007-05-05 11:45:53 -0700240 struct sk_buff_head ps_bc_buf;
Johannes Berg056cdd52008-03-26 23:21:47 +0100241 atomic_t num_sta_ps; /* number of stations in PS mode */
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100242 int dtim_count;
Christian Lamparter512119b2011-01-31 20:48:44 +0200243 bool dtim_bc_mc;
Jiri Bencf0706e82007-05-05 11:45:53 -0700244};
245
246struct ieee80211_if_wds {
Jiri Bencf0706e82007-05-05 11:45:53 -0700247 struct sta_info *sta;
Johannes Berg056cdd52008-03-26 23:21:47 +0100248 u8 remote_addr[ETH_ALEN];
Jiri Bencf0706e82007-05-05 11:45:53 -0700249};
250
251struct ieee80211_if_vlan {
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400252 struct list_head list;
Felix Fietkauf14543ee2009-11-10 20:10:05 +0100253
254 /* used for all tx if the VLAN is configured to 4-addr mode */
Johannes Berg40b275b2011-05-13 14:15:49 +0200255 struct sta_info __rcu *sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700256};
257
Luis Carlos Coboee385852008-02-23 15:17:11 +0100258struct mesh_stats {
Daniel Walkerc8a61a72009-08-18 10:59:00 -0700259 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
260 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
261 __u32 fwded_frames; /* Mesh total forwarded frames */
Luis Carlos Coboee385852008-02-23 15:17:11 +0100262 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
263 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
264 atomic_t estab_plinks;
265};
266
267#define PREQ_Q_F_START 0x1
268#define PREQ_Q_F_REFRESH 0x2
269struct mesh_preq_queue {
270 struct list_head list;
271 u8 dst[ETH_ALEN];
272 u8 flags;
273};
274
Johannes Bergf679f652009-12-23 13:15:34 +0100275enum ieee80211_work_type {
Johannes Bergb8bc4b02009-12-23 13:15:42 +0100276 IEEE80211_WORK_ABORT,
Johannes Bergaf6b6372009-12-23 13:15:35 +0100277 IEEE80211_WORK_DIRECT_PROBE,
Johannes Bergf679f652009-12-23 13:15:34 +0100278 IEEE80211_WORK_AUTH,
Johannes Berge5b900d2010-07-29 16:08:55 +0200279 IEEE80211_WORK_ASSOC_BEACON_WAIT,
Johannes Bergf679f652009-12-23 13:15:34 +0100280 IEEE80211_WORK_ASSOC,
Johannes Bergb8bc4b02009-12-23 13:15:42 +0100281 IEEE80211_WORK_REMAIN_ON_CHANNEL,
Johannes Bergf30221e2010-11-25 10:02:30 +0100282 IEEE80211_WORK_OFFCHANNEL_TX,
Johannes Berg77fdaa12009-07-07 03:45:17 +0200283};
284
Johannes Bergaf6b6372009-12-23 13:15:35 +0100285/**
286 * enum work_done_result - indicates what to do after work was done
287 *
288 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
289 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
290 * should be requeued.
291 */
292enum work_done_result {
293 WORK_DONE_DESTROY,
294 WORK_DONE_REQUEUE,
295};
296
Johannes Bergf679f652009-12-23 13:15:34 +0100297struct ieee80211_work {
Johannes Berg77fdaa12009-07-07 03:45:17 +0200298 struct list_head list;
Johannes Bergf679f652009-12-23 13:15:34 +0100299
Johannes Bergaf6b6372009-12-23 13:15:35 +0100300 struct rcu_head rcu_head;
301
302 struct ieee80211_sub_if_data *sdata;
303
304 enum work_done_result (*done)(struct ieee80211_work *wk,
305 struct sk_buff *skb);
306
Johannes Bergf679f652009-12-23 13:15:34 +0100307 struct ieee80211_channel *chan;
Johannes Berge4da8c32009-12-23 13:15:43 +0100308 enum nl80211_channel_type chan_type;
Johannes Bergaf6b6372009-12-23 13:15:35 +0100309
Johannes Berg77fdaa12009-07-07 03:45:17 +0200310 unsigned long timeout;
Johannes Bergf679f652009-12-23 13:15:34 +0100311 enum ieee80211_work_type type;
Johannes Berg77fdaa12009-07-07 03:45:17 +0200312
Johannes Bergaf6b6372009-12-23 13:15:35 +0100313 u8 filter_ta[ETH_ALEN];
314
Johannes Berge4da8c32009-12-23 13:15:43 +0100315 bool started;
316
Johannes Bergf679f652009-12-23 13:15:34 +0100317 union {
318 struct {
319 int tries;
320 u16 algorithm, transaction;
321 u8 ssid[IEEE80211_MAX_SSID_LEN];
322 u8 ssid_len;
Johannes Bergf679f652009-12-23 13:15:34 +0100323 u8 key[WLAN_KEY_LEN_WEP104];
324 u8 key_len, key_idx;
325 bool privacy;
Johannes Bergaf6b6372009-12-23 13:15:35 +0100326 } probe_auth;
Johannes Bergf679f652009-12-23 13:15:34 +0100327 struct {
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100328 struct cfg80211_bss *bss;
Johannes Bergf679f652009-12-23 13:15:34 +0100329 const u8 *supp_rates;
330 const u8 *ht_information_ie;
Johannes Bergaf6b6372009-12-23 13:15:35 +0100331 enum ieee80211_smps_mode smps;
Johannes Bergf679f652009-12-23 13:15:34 +0100332 int tries;
333 u16 capability;
Johannes Bergaf6b6372009-12-23 13:15:35 +0100334 u8 prev_bssid[ETH_ALEN];
Johannes Bergf679f652009-12-23 13:15:34 +0100335 u8 ssid[IEEE80211_MAX_SSID_LEN];
336 u8 ssid_len;
337 u8 supp_rates_len;
Kalle Valoab133152010-01-12 10:42:31 +0200338 bool wmm_used, use_11n, uapsd_used;
Johannes Bergf679f652009-12-23 13:15:34 +0100339 } assoc;
Johannes Bergb8bc4b02009-12-23 13:15:42 +0100340 struct {
Johannes Berge4da8c32009-12-23 13:15:43 +0100341 u32 duration;
Johannes Bergb8bc4b02009-12-23 13:15:42 +0100342 } remain;
Johannes Bergf30221e2010-11-25 10:02:30 +0100343 struct {
344 struct sk_buff *frame;
345 u32 wait;
346 } offchan_tx;
Johannes Bergf679f652009-12-23 13:15:34 +0100347 };
Johannes Berg77fdaa12009-07-07 03:45:17 +0200348
Johannes Bergf679f652009-12-23 13:15:34 +0100349 int ie_len;
Johannes Berg77fdaa12009-07-07 03:45:17 +0200350 /* must be last */
Johannes Bergf679f652009-12-23 13:15:34 +0100351 u8 ie[0];
Johannes Berg77fdaa12009-07-07 03:45:17 +0200352};
353
Johannes Berg46900292009-02-15 12:44:28 +0100354/* flags used in struct ieee80211_if_managed.flags */
Johannes Bergab1faea2009-07-01 21:41:17 +0200355enum ieee80211_sta_flags {
Johannes Bergb291ba12009-07-10 15:29:03 +0200356 IEEE80211_STA_BEACON_POLL = BIT(0),
357 IEEE80211_STA_CONNECTION_POLL = BIT(1),
358 IEEE80211_STA_CONTROL_PORT = BIT(2),
Johannes Bergb291ba12009-07-10 15:29:03 +0200359 IEEE80211_STA_DISABLE_11N = BIT(4),
360 IEEE80211_STA_CSA_RECEIVED = BIT(5),
361 IEEE80211_STA_MFP_ENABLED = BIT(6),
Kalle Valoab133152010-01-12 10:42:31 +0200362 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
Vivek Natarajan375177b2010-02-09 14:50:28 +0530363 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
Jouni Malinen17e4ec12010-03-29 23:28:30 -0700364 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
Johannes Bergab1faea2009-07-01 21:41:17 +0200365};
366
Johannes Berg46900292009-02-15 12:44:28 +0100367struct ieee80211_if_managed {
Johannes Berg056cdd52008-03-26 23:21:47 +0100368 struct timer_list timer;
Johannes Bergb291ba12009-07-10 15:29:03 +0200369 struct timer_list conn_mon_timer;
370 struct timer_list bcn_mon_timer;
Sujithc481ec92009-01-06 09:28:37 +0530371 struct timer_list chswitch_timer;
Johannes Bergb291ba12009-07-10 15:29:03 +0200372 struct work_struct monitor_work;
Sujithc481ec92009-01-06 09:28:37 +0530373 struct work_struct chswitch_work;
Juuso Oikarinen1e4dcd02010-03-19 07:14:53 +0200374 struct work_struct beacon_connection_loss_work;
Johannes Berg46900292009-02-15 12:44:28 +0100375
Felix Fietkau7ccc8bd2010-11-19 22:55:38 +0100376 unsigned long beacon_timeout;
Johannes Bergb291ba12009-07-10 15:29:03 +0200377 unsigned long probe_timeout;
Maxim Levitskya43abf22009-07-31 18:54:12 +0300378 int probe_send_count;
Felix Fietkau04ac3c02010-12-02 21:01:08 +0100379 bool nullfunc_failed;
Johannes Bergb291ba12009-07-10 15:29:03 +0200380
Johannes Berg77fdaa12009-07-07 03:45:17 +0200381 struct mutex mtx;
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100382 struct cfg80211_bss *associated;
Johannes Berg46900292009-02-15 12:44:28 +0100383
Johannes Berg77fdaa12009-07-07 03:45:17 +0200384 u8 bssid[ETH_ALEN];
Johannes Berg46900292009-02-15 12:44:28 +0100385
Jiri Bencf0706e82007-05-05 11:45:53 -0700386 u16 aid;
Jiri Bencf0706e82007-05-05 11:45:53 -0700387
Johannes Berg5bb644a2009-05-17 11:40:42 +0200388 unsigned long timers_running; /* used for quiesce/restart */
Johannes Berg965beda2009-04-16 13:17:24 +0200389 bool powersave; /* powersave requested for this iface */
Johannes Berg0f782312009-12-01 13:37:02 +0100390 enum ieee80211_smps_mode req_smps, /* requested smps mode */
Johannes Bergd1f5b7a2010-08-05 17:05:55 +0200391 ap_smps, /* smps mode AP thinks we're in */
392 driver_smps_mode; /* smps mode request */
393
394 struct work_struct request_smps_work;
Johannes Berg965beda2009-04-16 13:17:24 +0200395
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400396 unsigned int flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700397
Juuso Oikarinend8ec4432010-10-01 16:02:31 +0300398 bool beacon_crc_valid;
Johannes Bergd91f36d2009-04-16 13:17:26 +0200399 u32 beacon_crc;
400
Jouni Malinenfdfacf02009-01-08 13:32:05 +0200401 enum {
402 IEEE80211_MFP_DISABLED,
403 IEEE80211_MFP_OPTIONAL,
404 IEEE80211_MFP_REQUIRED
405 } mfp; /* management frame protection */
406
Jiri Bencf0706e82007-05-05 11:45:53 -0700407 int wmm_last_param_set;
Johannes Berg9bc383d2009-11-19 11:55:19 +0100408
409 u8 use_4addr;
Jouni Malinen17e4ec12010-03-29 23:28:30 -0700410
411 /* Signal strength from the last Beacon frame in the current BSS. */
412 int last_beacon_signal;
413
414 /*
415 * Weighted average of the signal strength from Beacon frames in the
416 * current BSS. This is in units of 1/16 of the signal unit to maintain
417 * accuracy and to speed up calculations, i.e., the value need to be
418 * divided by 16 to get the actual value.
419 */
420 int ave_beacon_signal;
421
422 /*
Jouni Malinen391a2002010-08-27 22:22:00 +0300423 * Number of Beacon frames used in ave_beacon_signal. This can be used
424 * to avoid generating less reliable cqm events that would be based
425 * only on couple of received frames.
426 */
427 unsigned int count_beacon_signal;
428
429 /*
Jouni Malinen17e4ec12010-03-29 23:28:30 -0700430 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
431 * that triggered a cqm event. 0 indicates that no event has been
432 * generated for the current association.
433 */
434 int last_cqm_event_signal;
Jiri Bencf0706e82007-05-05 11:45:53 -0700435};
436
Johannes Berg46900292009-02-15 12:44:28 +0100437struct ieee80211_if_ibss {
438 struct timer_list timer;
Johannes Berg46900292009-02-15 12:44:28 +0100439
Johannes Berg7a17a332010-07-21 11:30:27 +0200440 struct mutex mtx;
441
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200442 unsigned long last_scan_completed;
Johannes Berg5bb644a2009-05-17 11:40:42 +0200443
Teemu Paasikivifbd2c8d2010-06-14 12:55:31 +0300444 u32 basic_rates;
445
Johannes Berg5bb644a2009-05-17 11:40:42 +0200446 bool timer_running;
447
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200448 bool fixed_bssid;
449 bool fixed_channel;
Johannes Bergfffd0932009-07-08 14:22:54 +0200450 bool privacy;
Johannes Berg46900292009-02-15 12:44:28 +0100451
452 u8 bssid[ETH_ALEN];
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200453 u8 ssid[IEEE80211_MAX_SSID_LEN];
454 u8 ssid_len, ie_len;
455 u8 *ie;
456 struct ieee80211_channel *channel;
Johannes Berg46900292009-02-15 12:44:28 +0100457
458 unsigned long ibss_join_req;
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200459 /* probe response/beacon for IBSS */
Johannes Berg40b275b2011-05-13 14:15:49 +0200460 struct sk_buff __rcu *presp;
461 struct sk_buff *skb;
Johannes Berg46900292009-02-15 12:44:28 +0100462
463 enum {
464 IEEE80211_IBSS_MLME_SEARCH,
465 IEEE80211_IBSS_MLME_JOINED,
466 } state;
467};
468
Johannes Berg472dbc42008-09-11 00:01:49 +0200469struct ieee80211_if_mesh {
Johannes Berg472dbc42008-09-11 00:01:49 +0200470 struct timer_list housekeeping_timer;
471 struct timer_list mesh_path_timer;
Rui Pauloe304bfd2009-11-09 23:46:56 +0000472 struct timer_list mesh_path_root_timer;
Johannes Berg472dbc42008-09-11 00:01:49 +0200473
Johannes Berg5bb644a2009-05-17 11:40:42 +0200474 unsigned long timers_running;
475
Javier Cardona18889232009-08-10 12:15:52 -0700476 unsigned long wrkq_flags;
Johannes Berg472dbc42008-09-11 00:01:49 +0200477
478 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
479 size_t mesh_id_len;
480 /* Active Path Selection Protocol Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000481 u8 mesh_pp_id;
Johannes Berg472dbc42008-09-11 00:01:49 +0200482 /* Active Path Selection Metric Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000483 u8 mesh_pm_id;
Johannes Berg472dbc42008-09-11 00:01:49 +0200484 /* Congestion Control Mode Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000485 u8 mesh_cc_id;
Javier Cardona9e03fdf2009-08-20 09:21:45 -0700486 /* Synchronization Protocol Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000487 u8 mesh_sp_id;
Javier Cardona9e03fdf2009-08-20 09:21:45 -0700488 /* Authentication Protocol Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000489 u8 mesh_auth_id;
Rui Paulod19b3bf2009-11-09 23:46:55 +0000490 /* Local mesh Sequence Number */
491 u32 sn;
Johannes Berg472dbc42008-09-11 00:01:49 +0200492 /* Last used PREQ ID */
493 u32 preq_id;
494 atomic_t mpaths;
Rui Paulod19b3bf2009-11-09 23:46:55 +0000495 /* Timestamp of last SN update */
496 unsigned long last_sn_update;
497 /* Timestamp of last SN sent */
Johannes Berg472dbc42008-09-11 00:01:49 +0200498 unsigned long last_preq;
499 struct mesh_rmc *rmc;
500 spinlock_t mesh_preq_queue_lock;
501 struct mesh_preq_queue preq_queue;
502 int preq_queue_len;
503 struct mesh_stats mshstats;
504 struct mesh_config mshcfg;
505 u32 mesh_seqnum;
506 bool accepting_plinks;
Javier Cardona581a8b02011-04-07 15:08:27 -0700507 const u8 *ie;
508 u8 ie_len;
Javier Cardonab130e5c2011-05-03 16:57:07 -0700509 enum {
510 IEEE80211_MESH_SEC_NONE = 0x0,
511 IEEE80211_MESH_SEC_AUTHED = 0x1,
512 IEEE80211_MESH_SEC_SECURED = 0x2,
513 } security;
Johannes Berg472dbc42008-09-11 00:01:49 +0200514};
Johannes Berg902acc72008-02-23 15:17:19 +0100515
516#ifdef CONFIG_MAC80211_MESH
Johannes Berg472dbc42008-09-11 00:01:49 +0200517#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
518 do { (msh)->mshstats.name++; } while (0)
Johannes Berg902acc72008-02-23 15:17:19 +0100519#else
Johannes Berg472dbc42008-09-11 00:01:49 +0200520#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
Johannes Berg902acc72008-02-23 15:17:19 +0100521 do { } while (0)
522#endif
Jiri Bencf0706e82007-05-05 11:45:53 -0700523
Johannes Berg213cd112008-09-11 00:01:54 +0200524/**
525 * enum ieee80211_sub_if_data_flags - virtual interface flags
526 *
527 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
528 * @IEEE80211_SDATA_PROMISC: interface is promisc
Johannes Berg213cd112008-09-11 00:01:54 +0200529 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
530 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
531 * associated stations and deliver multicast frames both
532 * back to wireless media and to the local net stack.
533 */
534enum ieee80211_sub_if_data_flags {
535 IEEE80211_SDATA_ALLMULTI = BIT(0),
536 IEEE80211_SDATA_PROMISC = BIT(1),
Johannes Berg7986cf92009-03-21 17:08:43 +0100537 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
538 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
Johannes Berg213cd112008-09-11 00:01:54 +0200539};
540
Johannes Berg34d4bc42010-08-27 12:35:58 +0200541/**
542 * enum ieee80211_sdata_state_bits - virtual interface state bits
543 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
544 * mirrors netif_running() but is separate for interface type
545 * change handling while the interface is up
Johannes Berg5b714c62010-08-27 13:45:28 +0200546 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
547 * mode, so queues are stopped
Johannes Berg34d4bc42010-08-27 12:35:58 +0200548 */
549enum ieee80211_sdata_state_bits {
550 SDATA_STATE_RUNNING,
Johannes Berg5b714c62010-08-27 13:45:28 +0200551 SDATA_STATE_OFFCHANNEL,
Johannes Berg34d4bc42010-08-27 12:35:58 +0200552};
553
Jiri Bencf0706e82007-05-05 11:45:53 -0700554struct ieee80211_sub_if_data {
555 struct list_head list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700556
557 struct wireless_dev wdev;
558
Johannes Berg11a843b2007-08-28 17:01:55 -0400559 /* keys */
560 struct list_head key_list;
561
Yogesh Ashok Powar3bff1862011-06-28 18:41:37 +0530562 /* count for keys needing tailroom space allocation */
563 int crypto_tx_tailroom_needed_cnt;
564
Jiri Bencf0706e82007-05-05 11:45:53 -0700565 struct net_device *dev;
566 struct ieee80211_local *local;
567
Jiri Slaby13262ff2007-08-28 17:01:54 -0400568 unsigned int flags;
Daniel Drake7e9ed182007-07-27 15:43:24 +0200569
Johannes Berg34d4bc42010-08-27 12:35:58 +0200570 unsigned long state;
571
Jiri Bencf0706e82007-05-05 11:45:53 -0700572 int drop_unencrypted;
Jiri Bencf0706e82007-05-05 11:45:53 -0700573
Johannes Berg47846c92009-11-25 17:46:19 +0100574 char name[IFNAMSIZ];
575
Johannes Berg413ad502009-05-08 21:21:06 +0200576 /*
577 * keep track of whether the HT opmode (stored in
578 * vif.bss_info.ht_operation_mode) is valid.
579 */
580 bool ht_opmode_valid;
581
Johannes Berg7da7cc12010-08-05 17:02:38 +0200582 /* to detect idle changes */
583 bool old_idle;
584
Jiri Bencf0706e82007-05-05 11:45:53 -0700585 /* Fragment table for host-based reassembly */
586 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
587 unsigned int fragment_next;
588
Johannes Berg40b275b2011-05-13 14:15:49 +0200589 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
590 struct ieee80211_key __rcu *default_unicast_key;
591 struct ieee80211_key __rcu *default_multicast_key;
592 struct ieee80211_key __rcu *default_mgmt_key;
Jiri Bencf0706e82007-05-05 11:45:53 -0700593
Johannes Berg94778282008-10-10 13:21:59 +0200594 u16 sequence_number;
Johannes Berga621fa42010-08-27 14:26:54 +0300595 __be16 control_port_protocol;
596 bool control_port_no_encrypt;
Johannes Berg94778282008-10-10 13:21:59 +0200597
Johannes Berg64592c82010-06-10 10:21:31 +0200598 struct work_struct work;
Johannes Berg35f20c12010-06-10 10:21:30 +0200599 struct sk_buff_head skb_queue;
600
Juuso Oikarinen68542962010-06-09 13:43:26 +0300601 bool arp_filter_state;
602
Johannes Berg3e122be2008-07-09 14:40:34 +0200603 /*
604 * AP this belongs to: self in AP mode and
605 * corresponding AP in VLAN mode, NULL for
606 * all others (might be needed later in IBSS)
607 */
608 struct ieee80211_if_ap *bss;
609
Jouni Malinen37eb0b12010-01-06 13:09:08 +0200610 /* bitmap of allowed (non-MCS) rate indexes for rate control */
611 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
Jiri Bencf0706e82007-05-05 11:45:53 -0700612
613 union {
614 struct ieee80211_if_ap ap;
615 struct ieee80211_if_wds wds;
616 struct ieee80211_if_vlan vlan;
Johannes Berg46900292009-02-15 12:44:28 +0100617 struct ieee80211_if_managed mgd;
618 struct ieee80211_if_ibss ibss;
Johannes Berg472dbc42008-09-11 00:01:49 +0200619 struct ieee80211_if_mesh mesh;
Michael Wu8cc9a732008-01-31 19:48:23 +0100620 u32 mntr_flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700621 } u;
Jiri Bence9f207f2007-05-05 11:46:38 -0700622
623#ifdef CONFIG_MAC80211_DEBUGFS
Jouni Malinen2b58b202008-08-28 15:12:06 +0300624 struct {
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100625 struct dentry *dir;
Ben Greear295bafb2010-09-22 20:29:01 -0700626 struct dentry *subdir_stations;
Johannes Bergf7e01042010-12-09 19:49:02 +0100627 struct dentry *default_unicast_key;
628 struct dentry *default_multicast_key;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200629 struct dentry *default_mgmt_key;
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100630 } debugfs;
Jiri Bence9f207f2007-05-05 11:46:38 -0700631#endif
Johannes Berg32bfd352007-12-19 01:31:26 +0100632 /* must be last, dynamically sized area in this! */
633 struct ieee80211_vif vif;
Jiri Bencf0706e82007-05-05 11:45:53 -0700634};
635
Johannes Berg32bfd352007-12-19 01:31:26 +0100636static inline
637struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
638{
639 return container_of(p, struct ieee80211_sub_if_data, vif);
640}
641
Johannes Bergc1475ca2010-06-10 10:21:37 +0200642enum sdata_queue_type {
643 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
644 IEEE80211_SDATA_QUEUE_AGG_START = 1,
645 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
646};
647
Jiri Bencf0706e82007-05-05 11:45:53 -0700648enum {
649 IEEE80211_RX_MSG = 1,
650 IEEE80211_TX_STATUS_MSG = 2,
651};
652
Kalle Valoce7c9112008-12-18 23:35:20 +0200653enum queue_stop_reason {
654 IEEE80211_QUEUE_STOP_REASON_DRIVER,
Kalle Valo520eb822008-12-18 23:35:27 +0200655 IEEE80211_QUEUE_STOP_REASON_PS,
Johannes Berg96f5e662009-02-12 00:51:53 +0100656 IEEE80211_QUEUE_STOP_REASON_CSA,
657 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
Johannes Berg25420602009-03-13 11:43:36 +0100658 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
Johannes Berg8f77f382009-06-07 21:58:37 +0200659 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
Kalle Valoce7c9112008-12-18 23:35:20 +0200660};
661
Luciano Coelho65a65382010-12-21 16:02:17 +0200662#ifdef CONFIG_MAC80211_LEDS
Johannes Berge1e54062010-11-30 08:58:45 +0100663struct tpt_led_trigger {
664 struct led_trigger trig;
665 char name[32];
666 const struct ieee80211_tpt_blink *blink_table;
667 unsigned int blink_table_len;
668 struct timer_list timer;
Johannes Berge1e54062010-11-30 08:58:45 +0100669 unsigned long prev_traffic;
670 unsigned long tx_bytes, rx_bytes;
Johannes Berg67408c82010-11-30 08:59:23 +0100671 unsigned int active, want;
672 bool running;
Johannes Berge1e54062010-11-30 08:58:45 +0100673};
Luciano Coelho65a65382010-12-21 16:02:17 +0200674#endif
Johannes Berge1e54062010-11-30 08:58:45 +0100675
Helmut Schaa142b9f52009-07-23 13:18:01 +0200676/**
677 * mac80211 scan flags - currently active scan mode
678 *
679 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
680 * well be on the operating channel
681 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
682 * determine if we are on the operating channel or not
Johannes Berg8789d452010-08-26 13:30:26 +0200683 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
684 * that the scan completed.
685 * @SCAN_ABORTED: Set for our scan work function when the driver reported
686 * a scan complete for an aborted scan.
Helmut Schaa142b9f52009-07-23 13:18:01 +0200687 */
Helmut Schaafbe9c422009-07-23 12:14:04 +0200688enum {
689 SCAN_SW_SCANNING,
Helmut Schaa142b9f52009-07-23 13:18:01 +0200690 SCAN_HW_SCANNING,
Johannes Berg8789d452010-08-26 13:30:26 +0200691 SCAN_COMPLETED,
692 SCAN_ABORTED,
Helmut Schaa142b9f52009-07-23 13:18:01 +0200693};
694
695/**
696 * enum mac80211_scan_state - scan state machine states
697 *
698 * @SCAN_DECISION: Main entry point to the scan state machine, this state
699 * determines if we should keep on scanning or switch back to the
700 * operating channel
701 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
702 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
703 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
704 * about us leaving the channel and stop all associated STA interfaces
705 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
706 * AP about us being back and restart all associated STA interfaces
707 */
708enum mac80211_scan_state {
709 SCAN_DECISION,
710 SCAN_SET_CHANNEL,
711 SCAN_SEND_PROBE,
712 SCAN_LEAVE_OPER_CHANNEL,
713 SCAN_ENTER_OPER_CHANNEL,
Helmut Schaafbe9c422009-07-23 12:14:04 +0200714};
715
Jiri Bencf0706e82007-05-05 11:45:53 -0700716struct ieee80211_local {
717 /* embed the driver visible part.
718 * don't cast (use the static inlines below), but we keep
719 * it first anyway so they become a no-op */
720 struct ieee80211_hw hw;
721
722 const struct ieee80211_ops *ops;
723
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400724 /*
Johannes Bergaf6b6372009-12-23 13:15:35 +0100725 * work stuff, potentially off-channel (in the future)
726 */
Johannes Bergaf6b6372009-12-23 13:15:35 +0100727 struct list_head work_list;
728 struct timer_list work_timer;
729 struct work_struct work_work;
730 struct sk_buff_head work_skb_queue;
731
732 /*
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400733 * private workqueue to mac80211. mac80211 makes this accessible
734 * via ieee80211_queue_work()
735 */
736 struct workqueue_struct *workqueue;
737
Johannes Berge4e72fb2009-03-23 17:28:42 +0100738 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
Johannes Berg96f5e662009-02-12 00:51:53 +0100739 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
Kalle Valoce7c9112008-12-18 23:35:20 +0200740 spinlock_t queue_stop_reason_lock;
Johannes Berg96f5e662009-02-12 00:51:53 +0100741
Jiri Bencf0706e82007-05-05 11:45:53 -0700742 int open_count;
Michael Wu3d30d942008-01-31 19:48:27 +0100743 int monitors, cooked_mntrs;
Michael Wu8cc9a732008-01-31 19:48:23 +0100744 /* number of interfaces with corresponding FIF_ flags */
Johannes Berg7be50862010-10-13 12:06:24 +0200745 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
746 fif_probe_req;
747 int probe_req_reg;
Johannes Berg4150c572007-09-17 01:29:23 -0400748 unsigned int filter_flags; /* FIF_* */
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200749
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300750 bool wiphy_ciphers_allocated;
751
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200752 /* protects the aggregated multicast list and filter calls */
753 spinlock_t filter_lock;
754
Johannes Berg3ac64be2009-08-17 16:16:53 +0200755 /* used for uploading changed mc list */
756 struct work_struct reconfig_filter;
757
Johannes Berg0f782312009-12-01 13:37:02 +0100758 /* used to reconfigure hardware SM PS */
759 struct work_struct recalc_smps;
760
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200761 /* aggregated multicast list */
Jiri Pirko22bedad32010-04-01 21:22:57 +0000762 struct netdev_hw_addr_list mc_list;
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200763
Johannes Bergd0709a62008-02-25 16:27:46 +0100764 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
Johannes Berg5bb644a2009-05-17 11:40:42 +0200765
766 /*
767 * suspended is true if we finished all the suspend _and_ we have
768 * not yet come up from resume. This is to be used by mac80211
769 * to ensure driver sanity during suspend and mac80211's own
770 * sanity. It can eventually be used for WoW as well.
771 */
772 bool suspended;
773
774 /*
Johannes Bergceb99fe2009-11-19 14:29:39 +0100775 * Resuming is true while suspended, but when we're reprogramming the
776 * hardware -- at that time it's allowed to use ieee80211_queue_work()
777 * again even though some other parts of the stack are still suspended
778 * and we still drop received frames to avoid waking the stack.
779 */
780 bool resuming;
781
782 /*
Johannes Berg5bb644a2009-05-17 11:40:42 +0200783 * quiescing is true during the suspend process _only_ to
784 * ease timer cancelling etc.
785 */
786 bool quiescing;
787
Johannes Bergea77f122009-08-21 14:44:45 +0200788 /* device is started */
789 bool started;
790
Johannes Bergeecc4802011-05-04 15:37:29 +0200791 /* wowlan is enabled -- don't reconfig on resume */
792 bool wowlan;
793
Johannes Bergb306f452007-07-10 19:32:08 +0200794 int tx_headroom; /* required headroom for hardware/radiotap */
Jiri Bencf0706e82007-05-05 11:45:53 -0700795
Jiri Bencf0706e82007-05-05 11:45:53 -0700796 /* Tasklet and skb queue to process calls from IRQ mode. All frames
797 * added to skb_queue will be processed, but frames in
798 * skb_queue_unreliable may be dropped if the total length of these
799 * queues increases over the limit. */
800#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
801 struct tasklet_struct tasklet;
802 struct sk_buff_head skb_queue;
803 struct sk_buff_head skb_queue_unreliable;
804
Christian Lamparter24a8fda2010-12-30 17:25:29 +0100805 /*
806 * Internal FIFO queue which is shared between multiple rx path
807 * stages. Its main task is to provide a serialization mechanism,
808 * so all rx handlers can enjoy having exclusive access to their
809 * private data structures.
810 */
811 struct sk_buff_head rx_skb_queue;
812 bool running_rx_handler; /* protected by rx_skb_queue.lock */
813
Johannes Bergd0709a62008-02-25 16:27:46 +0100814 /* Station data */
815 /*
Johannes Berg34e89502010-02-03 13:59:58 +0100816 * The mutex only protects the list and counter,
817 * reads are done in RCU.
818 * Additionally, the lock protects the hash table,
819 * the pending list and each BSS's TIM bitmap.
Johannes Bergd0709a62008-02-25 16:27:46 +0100820 */
Johannes Berg34e89502010-02-03 13:59:58 +0100821 struct mutex sta_mtx;
Johannes Bergd0709a62008-02-25 16:27:46 +0100822 spinlock_t sta_lock;
823 unsigned long num_sta;
Johannes Berg34e89502010-02-03 13:59:58 +0100824 struct list_head sta_list, sta_pending_list;
Johannes Berg40b275b2011-05-13 14:15:49 +0200825 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
Jiri Bencf0706e82007-05-05 11:45:53 -0700826 struct timer_list sta_cleanup;
Johannes Berg34e89502010-02-03 13:59:58 +0100827 struct work_struct sta_finish_work;
Johannes Bergf5ea9122009-08-07 16:17:38 +0200828 int sta_generation;
Jiri Bencf0706e82007-05-05 11:45:53 -0700829
Johannes Berg2a577d92009-03-23 17:28:37 +0100830 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
Jiri Bencf0706e82007-05-05 11:45:53 -0700831 struct tasklet_struct tx_pending_tasklet;
832
Johannes Berga6a67db2010-06-10 10:21:41 +0200833 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
Johannes Bergcd8ffc82009-03-23 17:28:41 +0100834
Johannes Berg53918992007-09-26 15:19:47 +0200835 /* number of interfaces with corresponding IFF_ flags */
836 atomic_t iff_allmultis, iff_promiscs;
Jiri Bencf0706e82007-05-05 11:45:53 -0700837
838 struct rate_control_ref *rate_ctrl;
839
Felix Fietkau5f9f1812011-03-25 21:39:19 +0100840 struct crypto_cipher *wep_tx_tfm;
841 struct crypto_cipher *wep_rx_tfm;
Jiri Bencf0706e82007-05-05 11:45:53 -0700842 u32 wep_iv;
Jiri Bencf0706e82007-05-05 11:45:53 -0700843
Johannes Bergc771c9d2009-01-23 22:54:03 +0100844 /* see iface.c */
Johannes Berg79010422007-09-18 17:29:21 -0400845 struct list_head interfaces;
Johannes Bergc771c9d2009-01-23 22:54:03 +0100846 struct mutex iflist_mtx;
Johannes Berg79010422007-09-18 17:29:21 -0400847
Johannes Bergb16bd152008-04-11 21:40:35 +0200848 /*
Johannes Bergad0e2b52010-06-01 10:19:19 +0200849 * Key mutex, protects sdata's key_list and sta_info's
Johannes Bergb16bd152008-04-11 21:40:35 +0200850 * key pointers (write access, they're RCU.)
851 */
Johannes Bergad0e2b52010-06-01 10:19:19 +0200852 struct mutex key_mtx;
Johannes Bergb16bd152008-04-11 21:40:35 +0200853
Johannes Berga1699b72010-07-30 16:46:07 +0200854 /* mutex for scan and work locking */
855 struct mutex mtx;
Johannes Bergb16bd152008-04-11 21:40:35 +0200856
Johannes Bergc2b13452008-09-11 00:01:55 +0200857 /* Scanning and BSS list */
Helmut Schaafbe9c422009-07-23 12:14:04 +0200858 unsigned long scanning;
Johannes Berg2a519312009-02-10 21:25:55 +0100859 struct cfg80211_ssid scan_ssid;
Johannes Berg5ba63532009-08-07 17:54:07 +0200860 struct cfg80211_scan_request *int_scan_req;
Johannes Berg4d36ec582009-10-27 20:59:55 +0100861 struct cfg80211_scan_request *scan_req, *hw_scan_req;
Johannes Berg2a519312009-02-10 21:25:55 +0100862 struct ieee80211_channel *scan_channel;
Johannes Berg4d36ec582009-10-27 20:59:55 +0100863 enum ieee80211_band hw_scan_band;
Jiri Bencf0706e82007-05-05 11:45:53 -0700864 int scan_channel_idx;
Johannes Bergde95a542009-04-01 11:58:36 +0200865 int scan_ies_len;
Johannes Berg8318d782008-01-24 19:38:38 +0100866
Luciano Coelho79f460c2011-05-11 17:09:36 +0300867 bool sched_scanning;
868 struct ieee80211_sched_scan_ies sched_scan_ies;
Luciano Coelho85a99942011-05-12 16:28:29 +0300869 struct work_struct sched_scan_stopped_work;
Luciano Coelho79f460c2011-05-11 17:09:36 +0300870
Helmut Schaadf13cce2010-02-24 14:19:21 +0100871 unsigned long leave_oper_channel_time;
Helmut Schaa977923b2009-07-23 12:14:20 +0200872 enum mac80211_scan_state next_scan_state;
Jiri Bencf0706e82007-05-05 11:45:53 -0700873 struct delayed_work scan_work;
Johannes Berg491775a2008-09-08 17:44:23 +0200874 struct ieee80211_sub_if_data *scan_sdata;
Johannes Berg0aaffa92010-05-05 15:28:27 +0200875 enum nl80211_channel_type _oper_channel_type;
Johannes Berg2a519312009-02-10 21:25:55 +0100876 struct ieee80211_channel *oper_channel, *csa_channel;
Jiri Bencf0706e82007-05-05 11:45:53 -0700877
Johannes Bergb8bc4b02009-12-23 13:15:42 +0100878 /* Temporary remain-on-channel for off-channel operations */
879 struct ieee80211_channel *tmp_channel;
880 enum nl80211_channel_type tmp_channel_type;
881
Jiri Bencf0706e82007-05-05 11:45:53 -0700882 /* SNMP counters */
883 /* dot11CountersTable */
884 u32 dot11TransmittedFragmentCount;
885 u32 dot11MulticastTransmittedFrameCount;
886 u32 dot11FailedCount;
887 u32 dot11RetryCount;
888 u32 dot11MultipleRetryCount;
889 u32 dot11FrameDuplicateCount;
890 u32 dot11ReceivedFragmentCount;
891 u32 dot11MulticastReceivedFrameCount;
892 u32 dot11TransmittedFrameCount;
Jiri Bencf0706e82007-05-05 11:45:53 -0700893
894#ifdef CONFIG_MAC80211_LEDS
895 int tx_led_counter, rx_led_counter;
Ivo van Doorncdcb0062008-01-07 19:45:24 +0100896 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
Johannes Berge1e54062010-11-30 08:58:45 +0100897 struct tpt_led_trigger *tpt_led_trigger;
Ivo van Doorncdcb0062008-01-07 19:45:24 +0100898 char tx_led_name[32], rx_led_name[32],
899 assoc_led_name[32], radio_led_name[32];
Jiri Bencf0706e82007-05-05 11:45:53 -0700900#endif
901
Jiri Bencf0706e82007-05-05 11:45:53 -0700902#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
903 /* TX/RX handler statistics */
904 unsigned int tx_handlers_drop;
905 unsigned int tx_handlers_queued;
906 unsigned int tx_handlers_drop_unencrypted;
907 unsigned int tx_handlers_drop_fragment;
908 unsigned int tx_handlers_drop_wep;
909 unsigned int tx_handlers_drop_not_assoc;
910 unsigned int tx_handlers_drop_unauth_port;
911 unsigned int rx_handlers_drop;
912 unsigned int rx_handlers_queued;
913 unsigned int rx_handlers_drop_nullfunc;
914 unsigned int rx_handlers_drop_defrag;
915 unsigned int rx_handlers_drop_short;
916 unsigned int rx_handlers_drop_passive_scan;
917 unsigned int tx_expand_skb_head;
918 unsigned int tx_expand_skb_head_cloned;
919 unsigned int rx_expand_skb_head;
920 unsigned int rx_expand_skb_head2;
921 unsigned int rx_handlers_fragments;
922 unsigned int tx_status_drop;
Jiri Bencf0706e82007-05-05 11:45:53 -0700923#define I802_DEBUG_INC(c) (c)++
924#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
925#define I802_DEBUG_INC(c) do { } while (0)
926#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
927
928
Jiri Bencf0706e82007-05-05 11:45:53 -0700929 int total_ps_buffered; /* total number of all buffered unicast and
930 * multicast packets for power saving stations
931 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700932 int wifi_wme_noack_test;
933 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
Kalle Valo520eb822008-12-18 23:35:27 +0200934
Kalle Valo50ae0cf2010-01-12 10:42:39 +0200935 /*
936 * Bitmask of enabled u-apsd queues,
937 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
938 * to take effect.
939 */
940 unsigned int uapsd_queues;
941
942 /*
943 * Maximum number of buffered frames AP can deliver during a
944 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
945 * Needs a new association to take effect.
946 */
947 unsigned int uapsd_max_sp_len;
948
Kalle Valo572e0012009-02-10 17:09:31 +0200949 bool pspolling;
Jouni Malinenb203ffc2009-12-23 13:15:40 +0100950 bool offchannel_ps_enabled;
Johannes Berg965beda2009-04-16 13:17:24 +0200951 /*
952 * PS can only be enabled when we have exactly one managed
953 * interface (and monitors) in PS, this then points there.
954 */
955 struct ieee80211_sub_if_data *ps_sdata;
Kalle Valo520eb822008-12-18 23:35:27 +0200956 struct work_struct dynamic_ps_enable_work;
957 struct work_struct dynamic_ps_disable_work;
958 struct timer_list dynamic_ps_timer;
Johannes Berg10f644a2009-04-16 13:17:25 +0200959 struct notifier_block network_latency_notifier;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300960 struct notifier_block ifa_notifier;
Jiri Bencf0706e82007-05-05 11:45:53 -0700961
Juuso Oikarinenff616382010-06-09 09:51:52 +0300962 /*
963 * The dynamic ps timeout configured from user space via WEXT -
964 * this will override whatever chosen by mac80211 internally.
965 */
966 int dynamic_ps_forced_timeout;
Juuso Oikarinenf90754c2010-06-21 08:59:39 +0300967 int dynamic_ps_user_timeout;
968 bool disable_dynamic_ps;
Juuso Oikarinenff616382010-06-09 09:51:52 +0300969
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100970 int user_power_level; /* in dBm */
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530971 int power_constr_level; /* in dBm */
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100972
Johannes Berg0f782312009-12-01 13:37:02 +0100973 enum ieee80211_smps_mode smps_mode;
974
Johannes Bergf2753dd2009-04-14 10:09:24 +0200975 struct work_struct restart_work;
976
Jiri Bence9f207f2007-05-05 11:46:38 -0700977#ifdef CONFIG_MAC80211_DEBUGFS
978 struct local_debugfsdentries {
Johannes Berg4b7679a2008-09-18 18:14:18 +0200979 struct dentry *rcdir;
Jiri Bence9f207f2007-05-05 11:46:38 -0700980 struct dentry *keys;
981 } debugfs;
982#endif
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400983
Johannes Berg21f83582010-12-18 17:20:47 +0100984 struct ieee80211_channel *hw_roc_channel;
985 struct net_device *hw_roc_dev;
Johannes Berg4334ec82011-02-02 16:58:06 +0100986 struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status;
Johannes Berg21f83582010-12-18 17:20:47 +0100987 struct work_struct hw_roc_start, hw_roc_done;
988 enum nl80211_channel_type hw_roc_channel_type;
989 unsigned int hw_roc_duration;
990 u32 hw_roc_cookie;
Johannes Berg90fc4b32010-12-18 17:20:48 +0100991 bool hw_roc_for_tx;
Johannes Berg5f16a432011-02-25 15:36:57 +0100992 unsigned long hw_offchan_tx_cookie;
Johannes Berg21f83582010-12-18 17:20:47 +0100993
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400994 /* dummy netdev for use w/ NAPI */
995 struct net_device napi_dev;
996
997 struct napi_struct napi;
Jiri Bencf0706e82007-05-05 11:45:53 -0700998};
999
Johannes Berg3e122be2008-07-09 14:40:34 +02001000static inline struct ieee80211_sub_if_data *
1001IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1002{
Johannes Berg3e122be2008-07-09 14:40:34 +02001003 return netdev_priv(dev);
1004}
1005
Johannes Bergc1475ca2010-06-10 10:21:37 +02001006/* this struct represents 802.11n's RA/TID combination */
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +02001007struct ieee80211_ra_tid {
1008 u8 ra[ETH_ALEN];
1009 u16 tid;
1010};
1011
Luis Carlos Coboee385852008-02-23 15:17:11 +01001012/* Parsed Information Elements */
1013struct ieee802_11_elems {
Jouni Malinen43ac2ca2008-08-15 22:21:27 +03001014 u8 *ie_start;
1015 size_t total_len;
1016
Luis Carlos Coboee385852008-02-23 15:17:11 +01001017 /* pointers to IEs */
1018 u8 *ssid;
1019 u8 *supp_rates;
1020 u8 *fh_params;
1021 u8 *ds_params;
1022 u8 *cf_params;
Johannes Berge7ec86f2009-04-18 17:33:24 +02001023 struct ieee80211_tim_ie *tim;
Luis Carlos Coboee385852008-02-23 15:17:11 +01001024 u8 *ibss_params;
1025 u8 *challenge;
1026 u8 *wpa;
1027 u8 *rsn;
1028 u8 *erp_info;
1029 u8 *ext_supp_rates;
1030 u8 *wmm_info;
1031 u8 *wmm_param;
Johannes Berg09914812008-10-07 19:31:17 +02001032 struct ieee80211_ht_cap *ht_cap_elem;
Johannes Bergd9fe60d2008-10-09 12:13:49 +02001033 struct ieee80211_ht_info *ht_info_elem;
Rui Paulo136cfa22009-11-18 18:40:00 +00001034 struct ieee80211_meshconf_ie *mesh_config;
Luis Carlos Coboee385852008-02-23 15:17:11 +01001035 u8 *mesh_id;
1036 u8 *peer_link;
1037 u8 *preq;
1038 u8 *prep;
1039 u8 *perr;
Rui Paulo90a5e162009-11-11 00:01:31 +00001040 struct ieee80211_rann_ie *rann;
Assaf Kraussf2df3852008-06-15 18:23:29 +03001041 u8 *ch_switch_elem;
1042 u8 *country_elem;
1043 u8 *pwr_constr_elem;
1044 u8 *quiet_elem; /* first quite element */
Jouni Malinenf797eb72009-01-19 18:48:46 +02001045 u8 *timeout_int;
Luis Carlos Coboee385852008-02-23 15:17:11 +01001046
1047 /* length of them, respectively */
1048 u8 ssid_len;
1049 u8 supp_rates_len;
1050 u8 fh_params_len;
1051 u8 ds_params_len;
1052 u8 cf_params_len;
1053 u8 tim_len;
1054 u8 ibss_params_len;
1055 u8 challenge_len;
1056 u8 wpa_len;
1057 u8 rsn_len;
1058 u8 erp_info_len;
1059 u8 ext_supp_rates_len;
1060 u8 wmm_info_len;
1061 u8 wmm_param_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +01001062 u8 mesh_id_len;
1063 u8 peer_link_len;
1064 u8 preq_len;
1065 u8 prep_len;
1066 u8 perr_len;
Assaf Kraussf2df3852008-06-15 18:23:29 +03001067 u8 ch_switch_elem_len;
1068 u8 country_elem_len;
1069 u8 pwr_constr_elem_len;
1070 u8 quiet_elem_len;
1071 u8 num_of_quiet_elem; /* can be more the one */
Jouni Malinenf797eb72009-01-19 18:48:46 +02001072 u8 timeout_int_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +01001073};
1074
Jiri Bencf0706e82007-05-05 11:45:53 -07001075static inline struct ieee80211_local *hw_to_local(
1076 struct ieee80211_hw *hw)
1077{
1078 return container_of(hw, struct ieee80211_local, hw);
1079}
1080
1081static inline struct ieee80211_hw *local_to_hw(
1082 struct ieee80211_local *local)
1083{
1084 return &local->hw;
1085}
1086
Jiri Bencf0706e82007-05-05 11:45:53 -07001087
Johannes Berg571ecf62007-07-27 15:43:22 +02001088static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1089{
1090 return compare_ether_addr(raddr, addr) == 0 ||
1091 is_broadcast_ether_addr(raddr);
1092}
1093
1094
Johannes Berge8975582008-10-09 12:18:51 +02001095int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
Johannes Berg5cf121c2008-02-25 16:27:43 +01001096void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
Johannes Berg9c6bd792008-09-11 00:01:52 +02001097void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1098 u32 changed);
Johannes Berg0d143fe2008-09-11 00:01:59 +02001099void ieee80211_configure_filter(struct ieee80211_local *local);
Johannes Berg46900292009-02-15 12:44:28 +01001100u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
Jiri Bencf0706e82007-05-05 11:45:53 -07001101
Johannes Berg46900292009-02-15 12:44:28 +01001102/* STA code */
Johannes Berg9c6bd792008-09-11 00:01:52 +02001103void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
Johannes Berg77fdaa12009-07-07 03:45:17 +02001104int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1105 struct cfg80211_auth_request *req);
1106int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1107 struct cfg80211_assoc_request *req);
1108int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
Johannes Berg667503dd2009-07-07 03:56:11 +02001109 struct cfg80211_deauth_request *req,
1110 void *cookie);
Johannes Berg77fdaa12009-07-07 03:45:17 +02001111int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
Johannes Berg667503dd2009-07-07 03:56:11 +02001112 struct cfg80211_disassoc_request *req,
1113 void *cookie);
Kalle Valo572e0012009-02-10 17:09:31 +02001114void ieee80211_send_pspoll(struct ieee80211_local *local,
1115 struct ieee80211_sub_if_data *sdata);
Johannes Berg10f644a2009-04-16 13:17:25 +02001116void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1117int ieee80211_max_network_latency(struct notifier_block *nb,
1118 unsigned long data, void *dummy);
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001119int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
Johannes Bergcc32abd2009-05-15 11:52:31 +02001120void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1121 struct ieee80211_channel_sw_ie *sw_elem,
Johannes Berg5ce6e432010-05-11 16:20:57 +02001122 struct ieee80211_bss *bss,
1123 u64 timestamp);
Johannes Berg5bb644a2009-05-17 11:40:42 +02001124void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1125void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
Johannes Berg1fa57d02010-06-10 10:21:32 +02001126void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1127void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1128 struct sk_buff *skb);
Luis R. Rodriguezd3a910a2010-09-16 15:12:32 -04001129void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
Luis R. Rodriguezbe099e82010-09-16 15:12:29 -04001130void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
Johannes Berg9c6bd792008-09-11 00:01:52 +02001131
Johannes Berg46900292009-02-15 12:44:28 +01001132/* IBSS code */
Johannes Berg46900292009-02-15 12:44:28 +01001133void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1134void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
Johannes Berg46900292009-02-15 12:44:28 +01001135struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
Johannes Berg34e89502010-02-03 13:59:58 +01001136 u8 *bssid, u8 *addr, u32 supp_rates,
1137 gfp_t gfp);
Johannes Bergaf8cdcd2009-04-19 21:25:43 +02001138int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1139 struct cfg80211_ibss_params *params);
1140int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
Johannes Berg5bb644a2009-05-17 11:40:42 +02001141void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1142void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
Johannes Berg1fa57d02010-06-10 10:21:32 +02001143void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1144void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1145 struct sk_buff *skb);
1146
1147/* mesh code */
1148void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1149void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1150 struct sk_buff *skb);
Johannes Berg46900292009-02-15 12:44:28 +01001151
Johannes Berg9c6bd792008-09-11 00:01:52 +02001152/* scan/BSS handling */
Johannes Berg46900292009-02-15 12:44:28 +01001153void ieee80211_scan_work(struct work_struct *work);
Johannes Bergf3b85252009-04-23 16:01:47 +02001154int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
Johannes Bergbe4a4b62010-05-03 08:49:48 +02001155 const u8 *ssid, u8 ssid_len,
1156 struct ieee80211_channel *chan);
Johannes Bergc2b13452008-09-11 00:01:55 +02001157int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
Johannes Berg2a519312009-02-10 21:25:55 +01001158 struct cfg80211_scan_request *req);
Johannes Berg5bb644a2009-05-17 11:40:42 +02001159void ieee80211_scan_cancel(struct ieee80211_local *local);
Johannes Bergc2b13452008-09-11 00:01:55 +02001160ieee80211_rx_result
Johannes Bergf1d58c22009-06-17 13:13:00 +02001161ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
Johannes Berg9c6bd792008-09-11 00:01:52 +02001162
Johannes Berg0a51b272008-09-08 17:44:25 +02001163void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
Johannes Bergc2b13452008-09-11 00:01:55 +02001164struct ieee80211_bss *
Johannes Berg98c8fcc2008-09-08 17:44:26 +02001165ieee80211_bss_info_update(struct ieee80211_local *local,
1166 struct ieee80211_rx_status *rx_status,
1167 struct ieee80211_mgmt *mgmt,
1168 size_t len,
1169 struct ieee802_11_elems *elems,
Johannes Berg2a519312009-02-10 21:25:55 +01001170 struct ieee80211_channel *channel,
1171 bool beacon);
Johannes Bergc2b13452008-09-11 00:01:55 +02001172struct ieee80211_bss *
Johannes Berg5484e232008-09-08 17:44:27 +02001173ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1174 u8 *ssid, u8 ssid_len);
Johannes Berg98c8fcc2008-09-08 17:44:26 +02001175void ieee80211_rx_bss_put(struct ieee80211_local *local,
Johannes Bergc2b13452008-09-11 00:01:55 +02001176 struct ieee80211_bss *bss);
Luis Carlos Coboee385852008-02-23 15:17:11 +01001177
Luciano Coelho79f460c2011-05-11 17:09:36 +03001178/* scheduled scan handling */
1179int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1180 struct cfg80211_sched_scan_request *req);
Luciano Coelho85a99942011-05-12 16:28:29 +03001181int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1182void ieee80211_sched_scan_stopped_work(struct work_struct *work);
Luciano Coelho79f460c2011-05-11 17:09:36 +03001183
Jouni Malinenb203ffc2009-12-23 13:15:40 +01001184/* off-channel helpers */
Ben Greearb23b0252011-02-04 11:54:17 -08001185bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local);
1186void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local,
1187 bool tell_ap);
1188void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
1189 bool offchannel_ps_enable);
Jouni Malinenb203ffc2009-12-23 13:15:40 +01001190void ieee80211_offchannel_return(struct ieee80211_local *local,
Ben Greearb23b0252011-02-04 11:54:17 -08001191 bool enable_beaconing,
1192 bool offchannel_ps_disable);
Johannes Berg21f83582010-12-18 17:20:47 +01001193void ieee80211_hw_roc_setup(struct ieee80211_local *local);
Jouni Malinenb203ffc2009-12-23 13:15:40 +01001194
Johannes Berg3e122be2008-07-09 14:40:34 +02001195/* interface handling */
Johannes Berg47846c92009-11-25 17:46:19 +01001196int ieee80211_iface_init(void);
1197void ieee80211_iface_exit(void);
Johannes Berg3e122be2008-07-09 14:40:34 +02001198int ieee80211_if_add(struct ieee80211_local *local, const char *name,
Johannes Berg05c914f2008-09-11 00:01:58 +02001199 struct net_device **new_dev, enum nl80211_iftype type,
Luis Carlos Coboee385852008-02-23 15:17:11 +01001200 struct vif_params *params);
Johannes Bergf3947e22008-07-09 14:40:36 +02001201int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
Johannes Berg05c914f2008-09-11 00:01:58 +02001202 enum nl80211_iftype type);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +12001203void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
Johannes Berg75636522008-07-09 14:40:35 +02001204void ieee80211_remove_interfaces(struct ieee80211_local *local);
Johannes Berg5cff20e2009-04-29 12:26:17 +02001205u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1206void ieee80211_recalc_idle(struct ieee80211_local *local);
Christian Lamparter85416a42010-10-02 13:17:07 +02001207void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1208 const int offset);
Jiri Bencf0706e82007-05-05 11:45:53 -07001209
Johannes Berg9607e6b2009-12-23 13:15:31 +01001210static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1211{
Johannes Berg34d4bc42010-08-27 12:35:58 +02001212 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
Johannes Berg9607e6b2009-12-23 13:15:31 +01001213}
1214
Johannes Berge2ebc742007-07-27 15:43:22 +02001215/* tx handling */
Johannes Berge2ebc742007-07-27 15:43:22 +02001216void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1217void ieee80211_tx_pending(unsigned long data);
Stephen Hemmingerd0cf9c02009-08-31 19:50:57 +00001218netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1219 struct net_device *dev);
1220netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1221 struct net_device *dev);
Johannes Berge2ebc742007-07-27 15:43:22 +02001222
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001223/*
1224 * radiotap header for status frames
1225 */
1226struct ieee80211_tx_status_rtap_hdr {
1227 struct ieee80211_radiotap_header hdr;
1228 u8 rate;
1229 u8 padding_for_rate;
1230 __le16 tx_flags;
1231 u8 data_retries;
Eric Dumazetbc105022010-06-03 03:21:52 -07001232} __packed;
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001233
1234
Johannes Bergde1ede72008-09-09 14:42:50 +02001235/* HT */
Johannes Bergae5eb022008-10-14 16:58:37 +02001236void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1237 struct ieee80211_ht_cap *ht_cap_ie,
Johannes Bergd9fe60d2008-10-09 12:13:49 +02001238 struct ieee80211_sta_ht_cap *ht_cap);
Johannes Bergde1ede72008-09-09 14:42:50 +02001239void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
Johannes Bergb8695a82009-02-10 21:25:46 +01001240void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1241 const u8 *da, u16 tid,
1242 u16 initiator, u16 reason_code);
Johannes Berg0f782312009-12-01 13:37:02 +01001243int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1244 enum ieee80211_smps_mode smps, const u8 *da,
1245 const u8 *bssid);
Johannes Bergd1f5b7a2010-08-05 17:05:55 +02001246void ieee80211_request_smps_work(struct work_struct *work);
Johannes Bergde1ede72008-09-09 14:42:50 +02001247
Johannes Berg7c3b1dd2010-06-10 10:21:44 +02001248void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
Johannes Berg53f73c02010-10-05 19:37:40 +02001249 u16 initiator, u16 reason, bool stop);
Johannes Berg849b7962009-02-10 21:25:54 +01001250void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
Johannes Berg53f73c02010-10-05 19:37:40 +02001251 u16 initiator, u16 reason, bool stop);
1252void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
Johannes Bergde1ede72008-09-09 14:42:50 +02001253void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1254 struct sta_info *sta,
1255 struct ieee80211_mgmt *mgmt, size_t len);
1256void ieee80211_process_addba_resp(struct ieee80211_local *local,
1257 struct sta_info *sta,
1258 struct ieee80211_mgmt *mgmt,
1259 size_t len);
1260void ieee80211_process_addba_request(struct ieee80211_local *local,
1261 struct sta_info *sta,
1262 struct ieee80211_mgmt *mgmt,
1263 size_t len);
1264
Johannes Berg849b7962009-02-10 21:25:54 +01001265int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
Johannes Berg53f73c02010-10-05 19:37:40 +02001266 enum ieee80211_back_parties initiator,
1267 bool tx);
Johannes Berg67c282c2010-06-10 10:21:43 +02001268int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
Johannes Berg53f73c02010-10-05 19:37:40 +02001269 enum ieee80211_back_parties initiator,
1270 bool tx);
Johannes Berg5d22c892010-06-10 10:21:40 +02001271void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1272void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
Johannes Berg67c282c2010-06-10 10:21:43 +02001273void ieee80211_ba_session_work(struct work_struct *work);
1274void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
Christian Lamparter2bff8eb2010-08-05 01:36:41 +02001275void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
Johannes Berg849b7962009-02-10 21:25:54 +01001276
Johannes Berg39192c02008-09-09 14:49:03 +02001277/* Spectrum management */
1278void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1279 struct ieee80211_mgmt *mgmt,
1280 size_t len);
1281
Johannes Bergf2753dd2009-04-14 10:09:24 +02001282/* Suspend/resume and hw reconfiguration */
1283int ieee80211_reconfig(struct ieee80211_local *local);
Johannes Berg84f6a012009-08-20 20:02:20 +02001284void ieee80211_stop_device(struct ieee80211_local *local);
Johannes Bergf2753dd2009-04-14 10:09:24 +02001285
Johannes Berg827b1fb2009-03-13 11:44:18 +01001286#ifdef CONFIG_PM
Johannes Bergeecc4802011-05-04 15:37:29 +02001287int __ieee80211_suspend(struct ieee80211_hw *hw,
1288 struct cfg80211_wowlan *wowlan);
Johannes Bergf2753dd2009-04-14 10:09:24 +02001289
1290static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1291{
John W. Linville85f72bc2010-09-01 16:12:28 -04001292 struct ieee80211_local *local = hw_to_local(hw);
1293
1294 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1295 "%s: resume with hardware scan still in progress\n",
1296 wiphy_name(hw->wiphy));
1297
Johannes Bergf2753dd2009-04-14 10:09:24 +02001298 return ieee80211_reconfig(hw_to_local(hw));
1299}
Johannes Berg827b1fb2009-03-13 11:44:18 +01001300#else
Johannes Bergeecc4802011-05-04 15:37:29 +02001301static inline int __ieee80211_suspend(struct ieee80211_hw *hw,
1302 struct cfg80211_wowlan *wowlan)
Johannes Berg827b1fb2009-03-13 11:44:18 +01001303{
1304 return 0;
1305}
Johannes Bergf2753dd2009-04-14 10:09:24 +02001306
Johannes Berg827b1fb2009-03-13 11:44:18 +01001307static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1308{
1309 return 0;
1310}
1311#endif
Bob Copeland665af4f2009-01-19 11:20:53 -05001312
Johannes Bergc2d15602007-07-27 15:43:23 +02001313/* utility functions/constants */
1314extern void *mac80211_wiphy_privid; /* for wiphy privid */
Ron Rindjunsky71364712007-12-25 17:00:36 +02001315u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
Johannes Berg05c914f2008-09-11 00:01:58 +02001316 enum nl80211_iftype type);
Johannes Bergc2d15602007-07-27 15:43:23 +02001317int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1318 int rate, int erp, int short_preamble);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +12001319void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
Johannes Berge6d6e342009-07-01 21:26:47 +02001320 struct ieee80211_hdr *hdr, const u8 *tsc,
1321 gfp_t gfp);
Johannes Berg5825fe102008-09-09 12:56:01 +02001322void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
Johannes Berg62ae67b2009-11-18 18:42:05 +01001323void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
Johannes Berg9c6bd792008-09-11 00:01:52 +02001324void ieee802_11_parse_elems(u8 *start, size_t len,
1325 struct ieee802_11_elems *elems);
Johannes Bergd91f36d2009-04-16 13:17:26 +02001326u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1327 struct ieee802_11_elems *elems,
1328 u64 filter, u32 crc);
Johannes Berg881d9482009-01-21 15:13:48 +01001329u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
Johannes Berg96dd22a2008-09-11 00:01:57 +02001330 enum ieee80211_band band);
Jiri Bencf0706e82007-05-05 11:45:53 -07001331
Kalle Valo520eb822008-12-18 23:35:27 +02001332void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1333void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1334void ieee80211_dynamic_ps_timer(unsigned long data);
Vivek Natarajana97b77b2008-12-23 18:39:02 -08001335void ieee80211_send_nullfunc(struct ieee80211_local *local,
1336 struct ieee80211_sub_if_data *sdata,
1337 int powersave);
Kalle Valo3cf335d2009-03-22 21:57:06 +02001338void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1339 struct ieee80211_hdr *hdr);
Felix Fietkau4e5ff372010-11-23 03:10:31 +01001340void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
Felix Fietkau04ac3c02010-12-02 21:01:08 +01001341 struct ieee80211_hdr *hdr, bool ack);
Juuso Oikarinen1e4dcd02010-03-19 07:14:53 +02001342void ieee80211_beacon_connection_loss_work(struct work_struct *work);
Kalle Valo520eb822008-12-18 23:35:27 +02001343
Kalle Valoce7c9112008-12-18 23:35:20 +02001344void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1345 enum queue_stop_reason reason);
1346void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1347 enum queue_stop_reason reason);
Johannes Berg96f5e662009-02-12 00:51:53 +01001348void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1349 enum queue_stop_reason reason);
1350void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1351 enum queue_stop_reason reason);
Johannes Berg8f77f382009-06-07 21:58:37 +02001352void ieee80211_add_pending_skb(struct ieee80211_local *local,
1353 struct sk_buff *skb);
1354int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1355 struct sk_buff_head *skbs);
Johannes Berg50a94322010-11-16 11:50:28 -08001356int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1357 struct sk_buff_head *skbs,
1358 void (*fn)(void *data), void *data);
Kalle Valoce7c9112008-12-18 23:35:20 +02001359
Johannes Berg46900292009-02-15 12:44:28 +01001360void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1361 u16 transaction, u16 auth_alg,
Johannes Bergfffd0932009-07-08 14:22:54 +02001362 u8 *extra, size_t extra_len, const u8 *bssid,
1363 const u8 *key, u8 key_len, u8 key_idx);
Johannes Bergde95a542009-04-01 11:58:36 +02001364int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
Johannes Berg4d36ec582009-10-27 20:59:55 +01001365 const u8 *ie, size_t ie_len,
Jouni Malinen651b5222010-08-28 19:37:51 +03001366 enum ieee80211_band band, u32 rate_mask,
1367 u8 channel);
Juuso Oikarinena619a4c2010-11-11 08:50:18 +02001368struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1369 u8 *dst,
1370 const u8 *ssid, size_t ssid_len,
Paul Stewarta806c552011-06-23 09:00:11 -08001371 const u8 *ie, size_t ie_len,
1372 bool directed);
Johannes Berg46900292009-02-15 12:44:28 +01001373void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
Johannes Bergde95a542009-04-01 11:58:36 +02001374 const u8 *ssid, size_t ssid_len,
Paul Stewarta806c552011-06-23 09:00:11 -08001375 const u8 *ie, size_t ie_len,
1376 bool directed);
Johannes Berg46900292009-02-15 12:44:28 +01001377
1378void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1379 const size_t supp_rates_len,
1380 const u8 *supp_rates);
1381u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1382 struct ieee802_11_elems *elems,
1383 enum ieee80211_band band);
Johannes Berg0f782312009-12-01 13:37:02 +01001384int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1385 enum ieee80211_smps_mode smps_mode);
Johannes Berg025e6be2010-10-05 10:41:47 +02001386void ieee80211_recalc_smps(struct ieee80211_local *local);
Johannes Berg46900292009-02-15 12:44:28 +01001387
Johannes Berg8e664fb2009-12-23 13:15:38 +01001388size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1389 const u8 *ids, int n_ids, size_t offset);
1390size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1391
Johannes Bergaf6b6372009-12-23 13:15:35 +01001392/* internal work items */
1393void ieee80211_work_init(struct ieee80211_local *local);
1394void ieee80211_add_work(struct ieee80211_work *wk);
1395void free_work(struct ieee80211_work *wk);
1396void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1397ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
1398 struct sk_buff *skb);
Johannes Bergb8bc4b02009-12-23 13:15:42 +01001399int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1400 struct ieee80211_channel *chan,
1401 enum nl80211_channel_type channel_type,
1402 unsigned int duration, u64 *cookie);
1403int ieee80211_wk_cancel_remain_on_channel(
1404 struct ieee80211_sub_if_data *sdata, u64 cookie);
Johannes Bergaf6b6372009-12-23 13:15:35 +01001405
Johannes Bergf444de02010-05-05 15:25:02 +02001406/* channel management */
1407enum ieee80211_chan_mode {
1408 CHAN_MODE_UNDEFINED,
1409 CHAN_MODE_HOPPING,
1410 CHAN_MODE_FIXED,
1411};
1412
1413enum ieee80211_chan_mode
1414ieee80211_get_channel_mode(struct ieee80211_local *local,
1415 struct ieee80211_sub_if_data *ignore);
Johannes Berg0aaffa92010-05-05 15:28:27 +02001416bool ieee80211_set_channel_type(struct ieee80211_local *local,
1417 struct ieee80211_sub_if_data *sdata,
1418 enum nl80211_channel_type chantype);
Johannes Bergf444de02010-05-05 15:25:02 +02001419
Johannes Bergf4ea83d2008-06-30 15:10:46 +02001420#ifdef CONFIG_MAC80211_NOINLINE
Johannes Bergd9e8a702008-06-30 15:10:44 +02001421#define debug_noinline noinline
1422#else
1423#define debug_noinline
1424#endif
1425
Jiri Bencf0706e82007-05-05 11:45:53 -07001426#endif /* IEEE80211_I_H */