blob: efda19ee01526af026136979c67fba5543f8bbbe [file] [log] [blame]
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>
Johannes Berge039fa42008-05-15 12:55:29 +02005 * Copyright 2007-2008 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>
colin@cozybit.com93da9cc2008-10-21 12:03:48 -070026#include <net/cfg80211.h>
David S. Millerccc58052008-06-16 18:50:49 -070027#include <net/iw_handler.h>
David S. Miller51cb6db2008-07-15 03:34:57 -070028#include <net/mac80211.h>
Johannes Berg2c8dccc2008-04-08 15:14:40 -040029#include "key.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070030#include "sta_info.h"
31
Johannes Berg9cfb0002008-04-03 15:17:31 +020032struct ieee80211_local;
Jiri Bencf0706e82007-05-05 11:45:53 -070033
34/* Maximum number of broadcast/multicast frames to buffer when some of the
35 * associated stations are using power saving. */
36#define AP_MAX_BC_BUFFER 128
37
38/* Maximum number of frames buffered to all STAs, including multicast frames.
39 * Note: increasing this limit increases the potential memory requirement. Each
40 * frame can be up to about 2 kB long. */
41#define TOTAL_MAX_TX_BUFFER 512
42
43/* Required encryption head and tailroom */
44#define IEEE80211_ENCRYPT_HEADROOM 8
Jouni Malinen765cb462009-01-08 13:32:01 +020045#define IEEE80211_ENCRYPT_TAILROOM 18
Jiri Bencf0706e82007-05-05 11:45:53 -070046
47/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
48 * reception of at least three fragmented frames. This limit can be increased
49 * by changing this define, at the cost of slower frame reassembly and
50 * increased memory use (about 2 kB of RAM per entry). */
51#define IEEE80211_FRAGMENT_MAX 4
52
Johannes Berg0a51b272008-09-08 17:44:25 +020053/*
54 * Time after which we ignore scan results and no longer report/use
55 * them in any way.
56 */
57#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
58
Johannes Berg20ad19d2009-02-10 21:25:45 +010059#define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
60
Jiri Bencf0706e82007-05-05 11:45:53 -070061struct ieee80211_fragment_entry {
62 unsigned long first_frag_time;
63 unsigned int seq;
64 unsigned int rx_queue;
65 unsigned int last_frag;
66 unsigned int extra_len;
67 struct sk_buff_head skb_list;
68 int ccmp; /* Whether fragments were encrypted with CCMP */
69 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
70};
71
72
Johannes Bergc2b13452008-09-11 00:01:55 +020073struct ieee80211_bss {
Johannes Berg00d3f142009-02-10 21:26:00 +010074 /* Yes, this is a hack */
75 struct cfg80211_bss cbss;
76
77 /* don't want to look up all the time */
Johannes Berg056cdd52008-03-26 23:21:47 +010078 size_t ssid_len;
Jiri Bencf0706e82007-05-05 11:45:53 -070079 u8 ssid[IEEE80211_MAX_SSID_LEN];
Johannes Berg00d3f142009-02-10 21:26:00 +010080
Emmanuel Grumbach98f7dfd2008-07-18 13:52:59 +080081 u8 dtim_period;
Johannes Berg00d3f142009-02-10 21:26:00 +010082
Jouni Malinen43ac2ca2008-08-15 22:21:27 +030083 bool wmm_used;
Johannes Berg00d3f142009-02-10 21:26:00 +010084
85 unsigned long last_probe_resp;
86
Luis Carlos Coboee385852008-02-23 15:17:11 +010087#ifdef CONFIG_MAC80211_MESH
88 u8 *mesh_id;
89 size_t mesh_id_len;
John W. Linville24736702008-04-08 14:15:46 -040090 u8 *mesh_cfg;
Johannes Berg902acc72008-02-23 15:17:19 +010091#endif
Johannes Berg00d3f142009-02-10 21:26:00 +010092
Jiri Bencf0706e82007-05-05 11:45:53 -070093#define IEEE80211_MAX_SUPP_RATES 32
94 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
95 size_t supp_rates_len;
Jiri Bencf0706e82007-05-05 11:45:53 -070096
Johannes Berg00d3f142009-02-10 21:26:00 +010097 /*
98 * During assocation, we save an ERP value from a probe response so
Daniel Drake56282212007-07-10 19:32:10 +020099 * that we can feed ERP info to the driver when handling the
100 * association completes. these fields probably won't be up-to-date
Johannes Berg00d3f142009-02-10 21:26:00 +0100101 * otherwise, you probably don't want to use them.
102 */
103 bool has_erp_value;
Daniel Drake56282212007-07-10 19:32:10 +0200104 u8 erp_value;
Jiri Bencf0706e82007-05-05 11:45:53 -0700105};
106
Johannes Bergc2b13452008-09-11 00:01:55 +0200107static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100108{
109#ifdef CONFIG_MAC80211_MESH
110 return bss->mesh_cfg;
111#endif
112 return NULL;
113}
114
Johannes Bergc2b13452008-09-11 00:01:55 +0200115static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100116{
117#ifdef CONFIG_MAC80211_MESH
118 return bss->mesh_id;
119#endif
120 return NULL;
121}
122
Johannes Bergc2b13452008-09-11 00:01:55 +0200123static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100124{
125#ifdef CONFIG_MAC80211_MESH
126 return bss->mesh_id_len;
127#endif
128 return 0;
129}
130
Jiri Bencf0706e82007-05-05 11:45:53 -0700131
Johannes Berg9ae54c82008-01-31 19:48:20 +0100132typedef unsigned __bitwise__ ieee80211_tx_result;
133#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
134#define TX_DROP ((__force ieee80211_tx_result) 1u)
135#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
136
Johannes Berg5cf121c2008-02-25 16:27:43 +0100137#define IEEE80211_TX_FRAGMENTED BIT(0)
138#define IEEE80211_TX_UNICAST BIT(1)
139#define IEEE80211_TX_PS_BUFFERED BIT(2)
Johannes Berg9ae54c82008-01-31 19:48:20 +0100140
Johannes Berg5cf121c2008-02-25 16:27:43 +0100141struct ieee80211_tx_data {
Jiri Bencf0706e82007-05-05 11:45:53 -0700142 struct sk_buff *skb;
143 struct net_device *dev;
144 struct ieee80211_local *local;
145 struct ieee80211_sub_if_data *sdata;
146 struct sta_info *sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700147 struct ieee80211_key *key;
Jiri Bencf0706e82007-05-05 11:45:53 -0700148
Johannes Berg5cf121c2008-02-25 16:27:43 +0100149 struct ieee80211_channel *channel;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100150
Harvey Harrisona4b7d7b2008-07-15 18:44:14 -0700151 u16 ethertype;
Johannes Berg056cdd52008-03-26 23:21:47 +0100152 unsigned int flags;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100153};
154
155
156typedef unsigned __bitwise__ ieee80211_rx_result;
157#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
158#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
159#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
160#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
161
162#define IEEE80211_RX_IN_SCAN BIT(0)
163/* frame is destined to interface currently processed (incl. multicast frames) */
164#define IEEE80211_RX_RA_MATCH BIT(1)
165#define IEEE80211_RX_AMSDU BIT(2)
166#define IEEE80211_RX_CMNTR_REPORTED BIT(3)
167#define IEEE80211_RX_FRAGMENTED BIT(4)
168
169struct ieee80211_rx_data {
170 struct sk_buff *skb;
171 struct net_device *dev;
172 struct ieee80211_local *local;
173 struct ieee80211_sub_if_data *sdata;
174 struct sta_info *sta;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100175 struct ieee80211_key *key;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100176 struct ieee80211_rx_status *status;
177 struct ieee80211_rate *rate;
Johannes Berg056cdd52008-03-26 23:21:47 +0100178
Johannes Berg056cdd52008-03-26 23:21:47 +0100179 unsigned int flags;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100180 int sent_ps_buffered;
181 int queue;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100182 u32 tkip_iv32;
183 u16 tkip_iv16;
Jiri Bencf0706e82007-05-05 11:45:53 -0700184};
185
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100186struct beacon_data {
187 u8 *head, *tail;
188 int head_len, tail_len;
189 int dtim_period;
190};
191
Jiri Bencf0706e82007-05-05 11:45:53 -0700192struct ieee80211_if_ap {
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100193 struct beacon_data *beacon;
Jiri Bencf0706e82007-05-05 11:45:53 -0700194
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400195 struct list_head vlans;
196
Jiri Bencf0706e82007-05-05 11:45:53 -0700197 /* yes, this looks ugly, but guarantees that we can later use
198 * bitmap_empty :)
Johannes Berg004c8722008-02-20 11:21:35 +0100199 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
Jiri Bencf0706e82007-05-05 11:45:53 -0700200 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
Jiri Bencf0706e82007-05-05 11:45:53 -0700201 struct sk_buff_head ps_bc_buf;
Johannes Berg056cdd52008-03-26 23:21:47 +0100202 atomic_t num_sta_ps; /* number of stations in PS mode */
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100203 int dtim_count;
Jiri Bencf0706e82007-05-05 11:45:53 -0700204};
205
206struct ieee80211_if_wds {
Jiri Bencf0706e82007-05-05 11:45:53 -0700207 struct sta_info *sta;
Johannes Berg056cdd52008-03-26 23:21:47 +0100208 u8 remote_addr[ETH_ALEN];
Jiri Bencf0706e82007-05-05 11:45:53 -0700209};
210
211struct ieee80211_if_vlan {
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400212 struct list_head list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700213};
214
Luis Carlos Coboee385852008-02-23 15:17:11 +0100215struct mesh_stats {
216 __u32 fwded_frames; /* Mesh forwarded frames */
217 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
218 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
219 atomic_t estab_plinks;
220};
221
222#define PREQ_Q_F_START 0x1
223#define PREQ_Q_F_REFRESH 0x2
224struct mesh_preq_queue {
225 struct list_head list;
226 u8 dst[ETH_ALEN];
227 u8 flags;
228};
229
Johannes Berg77fdaa12009-07-07 03:45:17 +0200230enum ieee80211_mgd_state {
231 IEEE80211_MGD_STATE_IDLE,
232 IEEE80211_MGD_STATE_PROBE,
233 IEEE80211_MGD_STATE_AUTH,
234 IEEE80211_MGD_STATE_ASSOC,
235};
236
237struct ieee80211_mgd_work {
238 struct list_head list;
239 struct ieee80211_bss *bss;
240 int ie_len;
241 u8 prev_bssid[ETH_ALEN];
242 u8 ssid[IEEE80211_MAX_SSID_LEN];
243 u8 ssid_len;
244 unsigned long timeout;
245 enum ieee80211_mgd_state state;
246 u16 auth_alg, auth_transaction;
247
248 int tries;
249
Johannes Bergfffd0932009-07-08 14:22:54 +0200250 u8 key[WLAN_KEY_LEN_WEP104];
251 u8 key_len, key_idx;
252
Johannes Berg77fdaa12009-07-07 03:45:17 +0200253 /* must be last */
254 u8 ie[0]; /* for auth or assoc frame, not probe */
255};
256
Johannes Berg46900292009-02-15 12:44:28 +0100257/* flags used in struct ieee80211_if_managed.flags */
Johannes Bergab1faea2009-07-01 21:41:17 +0200258enum ieee80211_sta_flags {
Johannes Bergb291ba12009-07-10 15:29:03 +0200259 IEEE80211_STA_BEACON_POLL = BIT(0),
260 IEEE80211_STA_CONNECTION_POLL = BIT(1),
261 IEEE80211_STA_CONTROL_PORT = BIT(2),
262 IEEE80211_STA_WMM_ENABLED = BIT(3),
263 IEEE80211_STA_DISABLE_11N = BIT(4),
264 IEEE80211_STA_CSA_RECEIVED = BIT(5),
265 IEEE80211_STA_MFP_ENABLED = BIT(6),
Johannes Bergab1faea2009-07-01 21:41:17 +0200266};
267
Johannes Bergccd7b362008-09-11 00:01:56 +0200268/* flags for MLME request */
Johannes Bergab1faea2009-07-01 21:41:17 +0200269enum ieee80211_sta_request {
270 IEEE80211_STA_REQ_SCAN,
Johannes Bergab1faea2009-07-01 21:41:17 +0200271};
Tomas Winkler48c2fc52008-08-06 14:22:01 +0300272
Johannes Berg46900292009-02-15 12:44:28 +0100273struct ieee80211_if_managed {
Johannes Berg056cdd52008-03-26 23:21:47 +0100274 struct timer_list timer;
Johannes Bergb291ba12009-07-10 15:29:03 +0200275 struct timer_list conn_mon_timer;
276 struct timer_list bcn_mon_timer;
Sujithc481ec92009-01-06 09:28:37 +0530277 struct timer_list chswitch_timer;
Johannes Berg056cdd52008-03-26 23:21:47 +0100278 struct work_struct work;
Johannes Bergb291ba12009-07-10 15:29:03 +0200279 struct work_struct monitor_work;
Sujithc481ec92009-01-06 09:28:37 +0530280 struct work_struct chswitch_work;
Kalle Valo04de8382009-03-22 21:57:35 +0200281 struct work_struct beacon_loss_work;
Johannes Berg46900292009-02-15 12:44:28 +0100282
Johannes Bergb291ba12009-07-10 15:29:03 +0200283 unsigned long probe_timeout;
284
Johannes Berg77fdaa12009-07-07 03:45:17 +0200285 struct mutex mtx;
286 struct ieee80211_bss *associated;
287 struct list_head work_list;
Johannes Berg46900292009-02-15 12:44:28 +0100288
Johannes Berg77fdaa12009-07-07 03:45:17 +0200289 u8 bssid[ETH_ALEN];
Johannes Berg46900292009-02-15 12:44:28 +0100290
Jiri Bencf0706e82007-05-05 11:45:53 -0700291 u16 aid;
Johannes Berga7c1cfc2009-07-07 03:45:16 +0200292 u16 capab;
Jiri Bencf0706e82007-05-05 11:45:53 -0700293
Johannes Berg056cdd52008-03-26 23:21:47 +0100294 struct sk_buff_head skb_queue;
295
Johannes Berg5bb644a2009-05-17 11:40:42 +0200296 unsigned long timers_running; /* used for quiesce/restart */
Johannes Berg965beda2009-04-16 13:17:24 +0200297 bool powersave; /* powersave requested for this iface */
298
Johannes Berg056cdd52008-03-26 23:21:47 +0100299 unsigned long request;
300
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400301 unsigned int flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700302
Johannes Bergd91f36d2009-04-16 13:17:26 +0200303 u32 beacon_crc;
304
Jouni Malinenfdfacf02009-01-08 13:32:05 +0200305 enum {
306 IEEE80211_MFP_DISABLED,
307 IEEE80211_MFP_OPTIONAL,
308 IEEE80211_MFP_REQUIRED
309 } mfp; /* management frame protection */
310
Jiri Bencf0706e82007-05-05 11:45:53 -0700311 int wmm_last_param_set;
312};
313
Johannes Berg46900292009-02-15 12:44:28 +0100314enum ieee80211_ibss_request {
315 IEEE80211_IBSS_REQ_RUN = 0,
316};
317
318struct ieee80211_if_ibss {
319 struct timer_list timer;
320 struct work_struct work;
321
322 struct sk_buff_head skb_queue;
323
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200324 unsigned long request;
325 unsigned long last_scan_completed;
Johannes Berg5bb644a2009-05-17 11:40:42 +0200326
327 bool timer_running;
328
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200329 bool fixed_bssid;
330 bool fixed_channel;
Johannes Bergfffd0932009-07-08 14:22:54 +0200331 bool privacy;
Johannes Berg46900292009-02-15 12:44:28 +0100332
333 u8 bssid[ETH_ALEN];
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200334 u8 ssid[IEEE80211_MAX_SSID_LEN];
335 u8 ssid_len, ie_len;
336 u8 *ie;
337 struct ieee80211_channel *channel;
Johannes Berg46900292009-02-15 12:44:28 +0100338
339 unsigned long ibss_join_req;
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200340 /* probe response/beacon for IBSS */
341 struct sk_buff *presp, *skb;
Johannes Berg46900292009-02-15 12:44:28 +0100342
343 enum {
344 IEEE80211_IBSS_MLME_SEARCH,
345 IEEE80211_IBSS_MLME_JOINED,
346 } state;
347};
348
Johannes Berg472dbc42008-09-11 00:01:49 +0200349struct ieee80211_if_mesh {
350 struct work_struct work;
351 struct timer_list housekeeping_timer;
352 struct timer_list mesh_path_timer;
353 struct sk_buff_head skb_queue;
354
Johannes Berg5bb644a2009-05-17 11:40:42 +0200355 unsigned long timers_running;
356
Johannes Berg472dbc42008-09-11 00:01:49 +0200357 bool housekeeping;
358
359 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
360 size_t mesh_id_len;
361 /* Active Path Selection Protocol Identifier */
362 u8 mesh_pp_id[4];
363 /* Active Path Selection Metric Identifier */
364 u8 mesh_pm_id[4];
365 /* Congestion Control Mode Identifier */
366 u8 mesh_cc_id[4];
367 /* Local mesh Destination Sequence Number */
368 u32 dsn;
369 /* Last used PREQ ID */
370 u32 preq_id;
371 atomic_t mpaths;
372 /* Timestamp of last DSN update */
373 unsigned long last_dsn_update;
374 /* Timestamp of last DSN sent */
375 unsigned long last_preq;
376 struct mesh_rmc *rmc;
377 spinlock_t mesh_preq_queue_lock;
378 struct mesh_preq_queue preq_queue;
379 int preq_queue_len;
380 struct mesh_stats mshstats;
381 struct mesh_config mshcfg;
382 u32 mesh_seqnum;
383 bool accepting_plinks;
Johannes Berg472dbc42008-09-11 00:01:49 +0200384};
Johannes Berg902acc72008-02-23 15:17:19 +0100385
386#ifdef CONFIG_MAC80211_MESH
Johannes Berg472dbc42008-09-11 00:01:49 +0200387#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
388 do { (msh)->mshstats.name++; } while (0)
Johannes Berg902acc72008-02-23 15:17:19 +0100389#else
Johannes Berg472dbc42008-09-11 00:01:49 +0200390#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
Johannes Berg902acc72008-02-23 15:17:19 +0100391 do { } while (0)
392#endif
Jiri Bencf0706e82007-05-05 11:45:53 -0700393
Johannes Berg213cd112008-09-11 00:01:54 +0200394/**
395 * enum ieee80211_sub_if_data_flags - virtual interface flags
396 *
397 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
398 * @IEEE80211_SDATA_PROMISC: interface is promisc
Johannes Berg213cd112008-09-11 00:01:54 +0200399 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
400 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
401 * associated stations and deliver multicast frames both
402 * back to wireless media and to the local net stack.
403 */
404enum ieee80211_sub_if_data_flags {
405 IEEE80211_SDATA_ALLMULTI = BIT(0),
406 IEEE80211_SDATA_PROMISC = BIT(1),
Johannes Berg7986cf92009-03-21 17:08:43 +0100407 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
408 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
Johannes Berg213cd112008-09-11 00:01:54 +0200409};
410
Jiri Bencf0706e82007-05-05 11:45:53 -0700411struct ieee80211_sub_if_data {
412 struct list_head list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700413
414 struct wireless_dev wdev;
415
Johannes Berg11a843b2007-08-28 17:01:55 -0400416 /* keys */
417 struct list_head key_list;
418
Jiri Bencf0706e82007-05-05 11:45:53 -0700419 struct net_device *dev;
420 struct ieee80211_local *local;
421
Jiri Slaby13262ff2007-08-28 17:01:54 -0400422 unsigned int flags;
Daniel Drake7e9ed182007-07-27 15:43:24 +0200423
Jiri Bencf0706e82007-05-05 11:45:53 -0700424 int drop_unencrypted;
Jiri Bencf0706e82007-05-05 11:45:53 -0700425
Johannes Berg413ad502009-05-08 21:21:06 +0200426 /*
427 * keep track of whether the HT opmode (stored in
428 * vif.bss_info.ht_operation_mode) is valid.
429 */
430 bool ht_opmode_valid;
431
Jiri Bencf0706e82007-05-05 11:45:53 -0700432 /* Fragment table for host-based reassembly */
433 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
434 unsigned int fragment_next;
435
436#define NUM_DEFAULT_KEYS 4
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200437#define NUM_DEFAULT_MGMT_KEYS 2
438 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
Jiri Bencf0706e82007-05-05 11:45:53 -0700439 struct ieee80211_key *default_key;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200440 struct ieee80211_key *default_mgmt_key;
Jiri Bencf0706e82007-05-05 11:45:53 -0700441
Johannes Berg94778282008-10-10 13:21:59 +0200442 u16 sequence_number;
443
Johannes Berg3e122be2008-07-09 14:40:34 +0200444 /*
445 * AP this belongs to: self in AP mode and
446 * corresponding AP in VLAN mode, NULL for
447 * all others (might be needed later in IBSS)
448 */
449 struct ieee80211_if_ap *bss;
450
451 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
452 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
Jiri Bencf0706e82007-05-05 11:45:53 -0700453
454 union {
455 struct ieee80211_if_ap ap;
456 struct ieee80211_if_wds wds;
457 struct ieee80211_if_vlan vlan;
Johannes Berg46900292009-02-15 12:44:28 +0100458 struct ieee80211_if_managed mgd;
459 struct ieee80211_if_ibss ibss;
Johannes Berg472dbc42008-09-11 00:01:49 +0200460#ifdef CONFIG_MAC80211_MESH
461 struct ieee80211_if_mesh mesh;
462#endif
Michael Wu8cc9a732008-01-31 19:48:23 +0100463 u32 mntr_flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700464 } u;
Jiri Bence9f207f2007-05-05 11:46:38 -0700465
466#ifdef CONFIG_MAC80211_DEBUGFS
467 struct dentry *debugfsdir;
468 union {
469 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700470 struct dentry *drop_unencrypted;
Jiri Bence9f207f2007-05-05 11:46:38 -0700471 struct dentry *bssid;
Jiri Bence9f207f2007-05-05 11:46:38 -0700472 struct dentry *aid;
Jiri Bence9f207f2007-05-05 11:46:38 -0700473 struct dentry *capab;
Jouni Malinen93015f02008-08-25 11:57:06 +0300474 struct dentry *force_unicast_rateidx;
475 struct dentry *max_ratectrl_rateidx;
Jiri Bence9f207f2007-05-05 11:46:38 -0700476 } sta;
477 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700478 struct dentry *drop_unencrypted;
Jiri Bence9f207f2007-05-05 11:46:38 -0700479 struct dentry *num_sta_ps;
Jiri Bence9f207f2007-05-05 11:46:38 -0700480 struct dentry *dtim_count;
Jiri Bence9f207f2007-05-05 11:46:38 -0700481 struct dentry *force_unicast_rateidx;
482 struct dentry *max_ratectrl_rateidx;
483 struct dentry *num_buffered_multicast;
Jiri Bence9f207f2007-05-05 11:46:38 -0700484 } ap;
485 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700486 struct dentry *drop_unencrypted;
Jiri Bence9f207f2007-05-05 11:46:38 -0700487 struct dentry *peer;
Jouni Malinen93015f02008-08-25 11:57:06 +0300488 struct dentry *force_unicast_rateidx;
489 struct dentry *max_ratectrl_rateidx;
Jiri Bence9f207f2007-05-05 11:46:38 -0700490 } wds;
491 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700492 struct dentry *drop_unencrypted;
Jouni Malinen93015f02008-08-25 11:57:06 +0300493 struct dentry *force_unicast_rateidx;
494 struct dentry *max_ratectrl_rateidx;
Jiri Bence9f207f2007-05-05 11:46:38 -0700495 } vlan;
496 struct {
497 struct dentry *mode;
498 } monitor;
Jiri Bence9f207f2007-05-05 11:46:38 -0700499 } debugfs;
Jouni Malinen2b58b202008-08-28 15:12:06 +0300500 struct {
501 struct dentry *default_key;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200502 struct dentry *default_mgmt_key;
Jouni Malinen2b58b202008-08-28 15:12:06 +0300503 } common_debugfs;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100504
505#ifdef CONFIG_MAC80211_MESH
506 struct dentry *mesh_stats_dir;
507 struct {
508 struct dentry *fwded_frames;
509 struct dentry *dropped_frames_ttl;
510 struct dentry *dropped_frames_no_route;
511 struct dentry *estab_plinks;
Johannes Berg902acc72008-02-23 15:17:19 +0100512 struct timer_list mesh_path_timer;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100513 } mesh_stats;
514
515 struct dentry *mesh_config_dir;
516 struct {
517 struct dentry *dot11MeshRetryTimeout;
518 struct dentry *dot11MeshConfirmTimeout;
519 struct dentry *dot11MeshHoldingTimeout;
520 struct dentry *dot11MeshMaxRetries;
521 struct dentry *dot11MeshTTL;
522 struct dentry *auto_open_plinks;
523 struct dentry *dot11MeshMaxPeerLinks;
524 struct dentry *dot11MeshHWMPactivePathTimeout;
525 struct dentry *dot11MeshHWMPpreqMinInterval;
526 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
527 struct dentry *dot11MeshHWMPmaxPREQretries;
528 struct dentry *path_refresh_time;
529 struct dentry *min_discovery_timeout;
530 } mesh_config;
531#endif
532
Jiri Bence9f207f2007-05-05 11:46:38 -0700533#endif
Johannes Berg32bfd352007-12-19 01:31:26 +0100534 /* must be last, dynamically sized area in this! */
535 struct ieee80211_vif vif;
Jiri Bencf0706e82007-05-05 11:45:53 -0700536};
537
Johannes Berg32bfd352007-12-19 01:31:26 +0100538static inline
539struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
540{
541 return container_of(p, struct ieee80211_sub_if_data, vif);
542}
543
Johannes Berg472dbc42008-09-11 00:01:49 +0200544static inline void
545ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
546 u8 mesh_id_len, u8 *mesh_id)
547{
548#ifdef CONFIG_MAC80211_MESH
549 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
550 ifmsh->mesh_id_len = mesh_id_len;
551 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
552#else
553 WARN_ON(1);
554#endif
555}
556
Jiri Bencf0706e82007-05-05 11:45:53 -0700557enum {
558 IEEE80211_RX_MSG = 1,
559 IEEE80211_TX_STATUS_MSG = 2,
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +0200560 IEEE80211_DELBA_MSG = 3,
561 IEEE80211_ADDBA_MSG = 4,
Jiri Bencf0706e82007-05-05 11:45:53 -0700562};
563
Kalle Valoce7c9112008-12-18 23:35:20 +0200564enum queue_stop_reason {
565 IEEE80211_QUEUE_STOP_REASON_DRIVER,
Kalle Valo520eb822008-12-18 23:35:27 +0200566 IEEE80211_QUEUE_STOP_REASON_PS,
Johannes Berg96f5e662009-02-12 00:51:53 +0100567 IEEE80211_QUEUE_STOP_REASON_CSA,
568 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
Johannes Berg25420602009-03-13 11:43:36 +0100569 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
Johannes Berg8f77f382009-06-07 21:58:37 +0200570 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
Kalle Valoce7c9112008-12-18 23:35:20 +0200571};
572
Helmut Schaa142b9f52009-07-23 13:18:01 +0200573/**
574 * mac80211 scan flags - currently active scan mode
575 *
576 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
577 * well be on the operating channel
578 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
579 * determine if we are on the operating channel or not
580 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
581 * gets only set in conjunction with SCAN_SW_SCANNING
582 */
Helmut Schaafbe9c422009-07-23 12:14:04 +0200583enum {
584 SCAN_SW_SCANNING,
Helmut Schaa142b9f52009-07-23 13:18:01 +0200585 SCAN_HW_SCANNING,
586 SCAN_OFF_CHANNEL,
587};
588
589/**
590 * enum mac80211_scan_state - scan state machine states
591 *
592 * @SCAN_DECISION: Main entry point to the scan state machine, this state
593 * determines if we should keep on scanning or switch back to the
594 * operating channel
595 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
596 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
597 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
598 * about us leaving the channel and stop all associated STA interfaces
599 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
600 * AP about us being back and restart all associated STA interfaces
601 */
602enum mac80211_scan_state {
603 SCAN_DECISION,
604 SCAN_SET_CHANNEL,
605 SCAN_SEND_PROBE,
606 SCAN_LEAVE_OPER_CHANNEL,
607 SCAN_ENTER_OPER_CHANNEL,
Helmut Schaafbe9c422009-07-23 12:14:04 +0200608};
609
Jiri Bencf0706e82007-05-05 11:45:53 -0700610struct ieee80211_local {
611 /* embed the driver visible part.
612 * don't cast (use the static inlines below), but we keep
613 * it first anyway so they become a no-op */
614 struct ieee80211_hw hw;
615
616 const struct ieee80211_ops *ops;
617
Johannes Berge4e72fb2009-03-23 17:28:42 +0100618 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
Johannes Berg96f5e662009-02-12 00:51:53 +0100619 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
Kalle Valoce7c9112008-12-18 23:35:20 +0200620 spinlock_t queue_stop_reason_lock;
Johannes Berg96f5e662009-02-12 00:51:53 +0100621
Jiri Bencf0706e82007-05-05 11:45:53 -0700622 int open_count;
Michael Wu3d30d942008-01-31 19:48:27 +0100623 int monitors, cooked_mntrs;
Michael Wu8cc9a732008-01-31 19:48:23 +0100624 /* number of interfaces with corresponding FIF_ flags */
625 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
Johannes Berg4150c572007-09-17 01:29:23 -0400626 unsigned int filter_flags; /* FIF_* */
Jiri Bencf0706e82007-05-05 11:45:53 -0700627 struct iw_statistics wstats;
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200628
629 /* protects the aggregated multicast list and filter calls */
630 spinlock_t filter_lock;
631
632 /* aggregated multicast list */
633 struct dev_addr_list *mc_list;
634 int mc_count;
635
Johannes Bergd0709a62008-02-25 16:27:46 +0100636 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
Johannes Berg5bb644a2009-05-17 11:40:42 +0200637
638 /*
639 * suspended is true if we finished all the suspend _and_ we have
640 * not yet come up from resume. This is to be used by mac80211
641 * to ensure driver sanity during suspend and mac80211's own
642 * sanity. It can eventually be used for WoW as well.
643 */
644 bool suspended;
645
646 /*
647 * quiescing is true during the suspend process _only_ to
648 * ease timer cancelling etc.
649 */
650 bool quiescing;
651
Johannes Bergb306f452007-07-10 19:32:08 +0200652 int tx_headroom; /* required headroom for hardware/radiotap */
Jiri Bencf0706e82007-05-05 11:45:53 -0700653
Jiri Bencf0706e82007-05-05 11:45:53 -0700654 /* Tasklet and skb queue to process calls from IRQ mode. All frames
655 * added to skb_queue will be processed, but frames in
656 * skb_queue_unreliable may be dropped if the total length of these
657 * queues increases over the limit. */
658#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
659 struct tasklet_struct tasklet;
660 struct sk_buff_head skb_queue;
661 struct sk_buff_head skb_queue_unreliable;
662
Johannes Bergd0709a62008-02-25 16:27:46 +0100663 /* Station data */
664 /*
665 * The lock only protects the list, hash, timer and counter
666 * against manipulation, reads are done in RCU. Additionally,
Johannes Bergb16bd152008-04-11 21:40:35 +0200667 * the lock protects each BSS's TIM bitmap.
Johannes Bergd0709a62008-02-25 16:27:46 +0100668 */
669 spinlock_t sta_lock;
670 unsigned long num_sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700671 struct list_head sta_list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700672 struct sta_info *sta_hash[STA_HASH_SIZE];
673 struct timer_list sta_cleanup;
674
Johannes Berg2a577d92009-03-23 17:28:37 +0100675 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
Jiri Bencf0706e82007-05-05 11:45:53 -0700676 struct tasklet_struct tx_pending_tasklet;
677
Johannes Bergcd8ffc82009-03-23 17:28:41 +0100678 /*
679 * This lock is used to prevent concurrent A-MPDU
680 * session start/stop processing, this thus also
681 * synchronises the ->ampdu_action() callback to
682 * drivers and limits it to one at a time.
683 */
684 spinlock_t ampdu_lock;
685
Johannes Berg53918992007-09-26 15:19:47 +0200686 /* number of interfaces with corresponding IFF_ flags */
687 atomic_t iff_allmultis, iff_promiscs;
Jiri Bencf0706e82007-05-05 11:45:53 -0700688
689 struct rate_control_ref *rate_ctrl;
690
Jiri Bencf0706e82007-05-05 11:45:53 -0700691 struct crypto_blkcipher *wep_tx_tfm;
692 struct crypto_blkcipher *wep_rx_tfm;
693 u32 wep_iv;
Jiri Bencf0706e82007-05-05 11:45:53 -0700694
Johannes Bergc771c9d2009-01-23 22:54:03 +0100695 /* see iface.c */
Johannes Berg79010422007-09-18 17:29:21 -0400696 struct list_head interfaces;
Johannes Bergc771c9d2009-01-23 22:54:03 +0100697 struct mutex iflist_mtx;
Johannes Berg79010422007-09-18 17:29:21 -0400698
Johannes Bergb16bd152008-04-11 21:40:35 +0200699 /*
700 * Key lock, protects sdata's key_list and sta_info's
701 * key pointers (write access, they're RCU.)
702 */
703 spinlock_t key_lock;
704
705
Johannes Bergc2b13452008-09-11 00:01:55 +0200706 /* Scanning and BSS list */
Johannes Bergf3b85252009-04-23 16:01:47 +0200707 struct mutex scan_mtx;
Helmut Schaafbe9c422009-07-23 12:14:04 +0200708 unsigned long scanning;
Johannes Berg2a519312009-02-10 21:25:55 +0100709 struct cfg80211_ssid scan_ssid;
710 struct cfg80211_scan_request int_scan_req;
711 struct cfg80211_scan_request *scan_req;
712 struct ieee80211_channel *scan_channel;
Johannes Bergde95a542009-04-01 11:58:36 +0200713 const u8 *orig_ies;
714 int orig_ies_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700715 int scan_channel_idx;
Johannes Bergde95a542009-04-01 11:58:36 +0200716 int scan_ies_len;
Johannes Berg8318d782008-01-24 19:38:38 +0100717
Helmut Schaa142b9f52009-07-23 13:18:01 +0200718 enum mac80211_scan_state scan_state;
Jiri Bencf0706e82007-05-05 11:45:53 -0700719 struct delayed_work scan_work;
Johannes Berg491775a2008-09-08 17:44:23 +0200720 struct ieee80211_sub_if_data *scan_sdata;
Sujith094d05d2008-12-12 11:57:43 +0530721 enum nl80211_channel_type oper_channel_type;
Johannes Berg2a519312009-02-10 21:25:55 +0100722 struct ieee80211_channel *oper_channel, *csa_channel;
Jiri Bencf0706e82007-05-05 11:45:53 -0700723
724 /* SNMP counters */
725 /* dot11CountersTable */
726 u32 dot11TransmittedFragmentCount;
727 u32 dot11MulticastTransmittedFrameCount;
728 u32 dot11FailedCount;
729 u32 dot11RetryCount;
730 u32 dot11MultipleRetryCount;
731 u32 dot11FrameDuplicateCount;
732 u32 dot11ReceivedFragmentCount;
733 u32 dot11MulticastReceivedFrameCount;
734 u32 dot11TransmittedFrameCount;
Jiri Bencf0706e82007-05-05 11:45:53 -0700735
736#ifdef CONFIG_MAC80211_LEDS
737 int tx_led_counter, rx_led_counter;
Ivo van Doorncdcb0062008-01-07 19:45:24 +0100738 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
739 char tx_led_name[32], rx_led_name[32],
740 assoc_led_name[32], radio_led_name[32];
Jiri Bencf0706e82007-05-05 11:45:53 -0700741#endif
742
Jiri Bence9f207f2007-05-05 11:46:38 -0700743#ifdef CONFIG_MAC80211_DEBUGFS
744 struct work_struct sta_debugfs_add;
745#endif
746
Jiri Bencf0706e82007-05-05 11:45:53 -0700747#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
748 /* TX/RX handler statistics */
749 unsigned int tx_handlers_drop;
750 unsigned int tx_handlers_queued;
751 unsigned int tx_handlers_drop_unencrypted;
752 unsigned int tx_handlers_drop_fragment;
753 unsigned int tx_handlers_drop_wep;
754 unsigned int tx_handlers_drop_not_assoc;
755 unsigned int tx_handlers_drop_unauth_port;
756 unsigned int rx_handlers_drop;
757 unsigned int rx_handlers_queued;
758 unsigned int rx_handlers_drop_nullfunc;
759 unsigned int rx_handlers_drop_defrag;
760 unsigned int rx_handlers_drop_short;
761 unsigned int rx_handlers_drop_passive_scan;
762 unsigned int tx_expand_skb_head;
763 unsigned int tx_expand_skb_head_cloned;
764 unsigned int rx_expand_skb_head;
765 unsigned int rx_expand_skb_head2;
766 unsigned int rx_handlers_fragments;
767 unsigned int tx_status_drop;
Jiri Bencf0706e82007-05-05 11:45:53 -0700768#define I802_DEBUG_INC(c) (c)++
769#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
770#define I802_DEBUG_INC(c) do { } while (0)
771#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
772
773
Jiri Bencf0706e82007-05-05 11:45:53 -0700774 int total_ps_buffered; /* total number of all buffered unicast and
775 * multicast packets for power saving stations
776 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700777 int wifi_wme_noack_test;
778 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
Kalle Valo520eb822008-12-18 23:35:27 +0200779
Kalle Valo572e0012009-02-10 17:09:31 +0200780 bool pspolling;
Johannes Berg965beda2009-04-16 13:17:24 +0200781 /*
782 * PS can only be enabled when we have exactly one managed
783 * interface (and monitors) in PS, this then points there.
784 */
785 struct ieee80211_sub_if_data *ps_sdata;
Kalle Valo520eb822008-12-18 23:35:27 +0200786 struct work_struct dynamic_ps_enable_work;
787 struct work_struct dynamic_ps_disable_work;
788 struct timer_list dynamic_ps_timer;
Johannes Berg10f644a2009-04-16 13:17:25 +0200789 struct notifier_block network_latency_notifier;
Jiri Bencf0706e82007-05-05 11:45:53 -0700790
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100791 int user_power_level; /* in dBm */
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530792 int power_constr_level; /* in dBm */
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100793
Johannes Bergf2753dd2009-04-14 10:09:24 +0200794 struct work_struct restart_work;
795
Jiri Bence9f207f2007-05-05 11:46:38 -0700796#ifdef CONFIG_MAC80211_DEBUGFS
797 struct local_debugfsdentries {
Johannes Berg4b7679a2008-09-18 18:14:18 +0200798 struct dentry *rcdir;
799 struct dentry *rcname;
Jiri Bence9f207f2007-05-05 11:46:38 -0700800 struct dentry *frequency;
Jiri Bence9f207f2007-05-05 11:46:38 -0700801 struct dentry *total_ps_buffered;
Jiri Bence9f207f2007-05-05 11:46:38 -0700802 struct dentry *wep_iv;
Alina Friedrichsenae54c982009-01-23 05:33:37 +0100803 struct dentry *tsf;
Johannes Bergdb2e6bd2009-06-14 17:37:39 +0200804 struct dentry *queues;
Johannes Berg827b1fb2009-03-13 11:44:18 +0100805 struct dentry *reset;
Johannes Bergd3707d92009-05-12 22:05:40 +0200806 struct dentry *noack;
Jiri Bence9f207f2007-05-05 11:46:38 -0700807 struct dentry *statistics;
808 struct local_debugfsdentries_statsdentries {
809 struct dentry *transmitted_fragment_count;
810 struct dentry *multicast_transmitted_frame_count;
811 struct dentry *failed_count;
812 struct dentry *retry_count;
813 struct dentry *multiple_retry_count;
814 struct dentry *frame_duplicate_count;
815 struct dentry *received_fragment_count;
816 struct dentry *multicast_received_frame_count;
817 struct dentry *transmitted_frame_count;
818 struct dentry *wep_undecryptable_count;
819 struct dentry *num_scans;
820#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
821 struct dentry *tx_handlers_drop;
822 struct dentry *tx_handlers_queued;
823 struct dentry *tx_handlers_drop_unencrypted;
824 struct dentry *tx_handlers_drop_fragment;
825 struct dentry *tx_handlers_drop_wep;
826 struct dentry *tx_handlers_drop_not_assoc;
827 struct dentry *tx_handlers_drop_unauth_port;
828 struct dentry *rx_handlers_drop;
829 struct dentry *rx_handlers_queued;
830 struct dentry *rx_handlers_drop_nullfunc;
831 struct dentry *rx_handlers_drop_defrag;
832 struct dentry *rx_handlers_drop_short;
833 struct dentry *rx_handlers_drop_passive_scan;
834 struct dentry *tx_expand_skb_head;
835 struct dentry *tx_expand_skb_head_cloned;
836 struct dentry *rx_expand_skb_head;
837 struct dentry *rx_expand_skb_head2;
838 struct dentry *rx_handlers_fragments;
839 struct dentry *tx_status_drop;
Jiri Bence9f207f2007-05-05 11:46:38 -0700840#endif
841 struct dentry *dot11ACKFailureCount;
842 struct dentry *dot11RTSFailureCount;
843 struct dentry *dot11FCSErrorCount;
844 struct dentry *dot11RTSSuccessCount;
845 } stats;
846 struct dentry *stations;
847 struct dentry *keys;
848 } debugfs;
849#endif
Jiri Bencf0706e82007-05-05 11:45:53 -0700850};
851
Johannes Berg3e122be2008-07-09 14:40:34 +0200852static inline struct ieee80211_sub_if_data *
853IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
854{
Johannes Berg3e122be2008-07-09 14:40:34 +0200855 return netdev_priv(dev);
856}
857
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +0200858/* this struct represents 802.11n's RA/TID combination */
859struct ieee80211_ra_tid {
860 u8 ra[ETH_ALEN];
861 u16 tid;
862};
863
Luis Carlos Coboee385852008-02-23 15:17:11 +0100864/* Parsed Information Elements */
865struct ieee802_11_elems {
Jouni Malinen43ac2ca2008-08-15 22:21:27 +0300866 u8 *ie_start;
867 size_t total_len;
868
Luis Carlos Coboee385852008-02-23 15:17:11 +0100869 /* pointers to IEs */
870 u8 *ssid;
871 u8 *supp_rates;
872 u8 *fh_params;
873 u8 *ds_params;
874 u8 *cf_params;
Johannes Berge7ec86f2009-04-18 17:33:24 +0200875 struct ieee80211_tim_ie *tim;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100876 u8 *ibss_params;
877 u8 *challenge;
878 u8 *wpa;
879 u8 *rsn;
880 u8 *erp_info;
881 u8 *ext_supp_rates;
882 u8 *wmm_info;
883 u8 *wmm_param;
Johannes Berg09914812008-10-07 19:31:17 +0200884 struct ieee80211_ht_cap *ht_cap_elem;
Johannes Bergd9fe60d2008-10-09 12:13:49 +0200885 struct ieee80211_ht_info *ht_info_elem;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100886 u8 *mesh_config;
887 u8 *mesh_id;
888 u8 *peer_link;
889 u8 *preq;
890 u8 *prep;
891 u8 *perr;
Assaf Kraussf2df3852008-06-15 18:23:29 +0300892 u8 *ch_switch_elem;
893 u8 *country_elem;
894 u8 *pwr_constr_elem;
895 u8 *quiet_elem; /* first quite element */
Jouni Malinenf797eb72009-01-19 18:48:46 +0200896 u8 *timeout_int;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100897
898 /* length of them, respectively */
899 u8 ssid_len;
900 u8 supp_rates_len;
901 u8 fh_params_len;
902 u8 ds_params_len;
903 u8 cf_params_len;
904 u8 tim_len;
905 u8 ibss_params_len;
906 u8 challenge_len;
907 u8 wpa_len;
908 u8 rsn_len;
909 u8 erp_info_len;
910 u8 ext_supp_rates_len;
911 u8 wmm_info_len;
912 u8 wmm_param_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100913 u8 mesh_config_len;
914 u8 mesh_id_len;
915 u8 peer_link_len;
916 u8 preq_len;
917 u8 prep_len;
918 u8 perr_len;
Assaf Kraussf2df3852008-06-15 18:23:29 +0300919 u8 ch_switch_elem_len;
920 u8 country_elem_len;
921 u8 pwr_constr_elem_len;
922 u8 quiet_elem_len;
923 u8 num_of_quiet_elem; /* can be more the one */
Jouni Malinenf797eb72009-01-19 18:48:46 +0200924 u8 timeout_int_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100925};
926
Jiri Bencf0706e82007-05-05 11:45:53 -0700927static inline struct ieee80211_local *hw_to_local(
928 struct ieee80211_hw *hw)
929{
930 return container_of(hw, struct ieee80211_local, hw);
931}
932
933static inline struct ieee80211_hw *local_to_hw(
934 struct ieee80211_local *local)
935{
936 return &local->hw;
937}
938
Jiri Bencf0706e82007-05-05 11:45:53 -0700939
Johannes Berg571ecf62007-07-27 15:43:22 +0200940static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
941{
942 return compare_ether_addr(raddr, addr) == 0 ||
943 is_broadcast_ether_addr(raddr);
944}
945
946
Johannes Berge8975582008-10-09 12:18:51 +0200947int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
Johannes Berg5cf121c2008-02-25 16:27:43 +0100948void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200949void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
950 u32 changed);
Johannes Berg0d143fe2008-09-11 00:01:59 +0200951void ieee80211_configure_filter(struct ieee80211_local *local);
Johannes Berg46900292009-02-15 12:44:28 +0100952u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
Jiri Bencf0706e82007-05-05 11:45:53 -0700953
Johannes Berg9c6bd792008-09-11 00:01:52 +0200954/* wireless extensions */
Jiri Bencf0706e82007-05-05 11:45:53 -0700955extern const struct iw_handler_def ieee80211_iw_handler_def;
David S. Miller65b53e4c2008-06-10 02:22:26 -0700956
Johannes Berg46900292009-02-15 12:44:28 +0100957/* STA code */
Johannes Berg9c6bd792008-09-11 00:01:52 +0200958void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
Johannes Berg77fdaa12009-07-07 03:45:17 +0200959int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
960 struct cfg80211_auth_request *req);
961int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
962 struct cfg80211_assoc_request *req);
963int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
Johannes Berg667503dd2009-07-07 03:56:11 +0200964 struct cfg80211_deauth_request *req,
965 void *cookie);
Johannes Berg77fdaa12009-07-07 03:45:17 +0200966int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
Johannes Berg667503dd2009-07-07 03:56:11 +0200967 struct cfg80211_disassoc_request *req,
968 void *cookie);
Johannes Berg46900292009-02-15 12:44:28 +0100969ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
Johannes Bergf1d58c22009-06-17 13:13:00 +0200970 struct sk_buff *skb);
Kalle Valo572e0012009-02-10 17:09:31 +0200971void ieee80211_send_pspoll(struct ieee80211_local *local,
972 struct ieee80211_sub_if_data *sdata);
Johannes Berg10f644a2009-04-16 13:17:25 +0200973void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
974int ieee80211_max_network_latency(struct notifier_block *nb,
975 unsigned long data, void *dummy);
Johannes Bergcc32abd2009-05-15 11:52:31 +0200976void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
977 struct ieee80211_channel_sw_ie *sw_elem,
978 struct ieee80211_bss *bss);
Johannes Berg5bb644a2009-05-17 11:40:42 +0200979void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
980void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200981
Johannes Berg46900292009-02-15 12:44:28 +0100982/* IBSS code */
Johannes Berg46900292009-02-15 12:44:28 +0100983void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
984void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
985ieee80211_rx_result
Johannes Bergf1d58c22009-06-17 13:13:00 +0200986ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
Johannes Berg46900292009-02-15 12:44:28 +0100987struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
988 u8 *bssid, u8 *addr, u32 supp_rates);
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200989int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
990 struct cfg80211_ibss_params *params);
991int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
Johannes Berg5bb644a2009-05-17 11:40:42 +0200992void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
993void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
Johannes Berg46900292009-02-15 12:44:28 +0100994
Johannes Berg9c6bd792008-09-11 00:01:52 +0200995/* scan/BSS handling */
Johannes Berg46900292009-02-15 12:44:28 +0100996void ieee80211_scan_work(struct work_struct *work);
Johannes Bergf3b85252009-04-23 16:01:47 +0200997int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
998 const u8 *ssid, u8 ssid_len);
Johannes Bergc2b13452008-09-11 00:01:55 +0200999int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
Johannes Berg2a519312009-02-10 21:25:55 +01001000 struct cfg80211_scan_request *req);
Johannes Berg5bb644a2009-05-17 11:40:42 +02001001void ieee80211_scan_cancel(struct ieee80211_local *local);
Johannes Bergc2b13452008-09-11 00:01:55 +02001002ieee80211_rx_result
Johannes Bergf1d58c22009-06-17 13:13:00 +02001003ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
Johannes Berg9c6bd792008-09-11 00:01:52 +02001004
Johannes Berg0a51b272008-09-08 17:44:25 +02001005void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
Johannes Bergc2b13452008-09-11 00:01:55 +02001006struct ieee80211_bss *
Johannes Berg98c8fcc2008-09-08 17:44:26 +02001007ieee80211_bss_info_update(struct ieee80211_local *local,
1008 struct ieee80211_rx_status *rx_status,
1009 struct ieee80211_mgmt *mgmt,
1010 size_t len,
1011 struct ieee802_11_elems *elems,
Johannes Berg2a519312009-02-10 21:25:55 +01001012 struct ieee80211_channel *channel,
1013 bool beacon);
Johannes Bergc2b13452008-09-11 00:01:55 +02001014struct ieee80211_bss *
Johannes Berg5484e232008-09-08 17:44:27 +02001015ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1016 u8 *ssid, u8 ssid_len);
Johannes Berg98c8fcc2008-09-08 17:44:26 +02001017void ieee80211_rx_bss_put(struct ieee80211_local *local,
Johannes Bergc2b13452008-09-11 00:01:55 +02001018 struct ieee80211_bss *bss);
Luis Carlos Coboee385852008-02-23 15:17:11 +01001019
Johannes Berg3e122be2008-07-09 14:40:34 +02001020/* interface handling */
1021int ieee80211_if_add(struct ieee80211_local *local, const char *name,
Johannes Berg05c914f2008-09-11 00:01:58 +02001022 struct net_device **new_dev, enum nl80211_iftype type,
Luis Carlos Coboee385852008-02-23 15:17:11 +01001023 struct vif_params *params);
Johannes Bergf3947e22008-07-09 14:40:36 +02001024int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
Johannes Berg05c914f2008-09-11 00:01:58 +02001025 enum nl80211_iftype type);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +12001026void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
Johannes Berg75636522008-07-09 14:40:35 +02001027void ieee80211_remove_interfaces(struct ieee80211_local *local);
Johannes Berg5cff20e2009-04-29 12:26:17 +02001028u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1029void ieee80211_recalc_idle(struct ieee80211_local *local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001030
Johannes Berge2ebc742007-07-27 15:43:22 +02001031/* tx handling */
Johannes Berge2ebc742007-07-27 15:43:22 +02001032void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1033void ieee80211_tx_pending(unsigned long data);
Johannes Berge2ebc742007-07-27 15:43:22 +02001034int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
1035int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
Johannes Berge2ebc742007-07-27 15:43:22 +02001036
Johannes Bergde1ede72008-09-09 14:42:50 +02001037/* HT */
Johannes Bergae5eb022008-10-14 16:58:37 +02001038void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1039 struct ieee80211_ht_cap *ht_cap_ie,
Johannes Bergd9fe60d2008-10-09 12:13:49 +02001040 struct ieee80211_sta_ht_cap *ht_cap);
Johannes Bergde1ede72008-09-09 14:42:50 +02001041void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
Johannes Bergb8695a82009-02-10 21:25:46 +01001042void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1043 const u8 *da, u16 tid,
1044 u16 initiator, u16 reason_code);
Johannes Bergde1ede72008-09-09 14:42:50 +02001045
1046void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1047 u16 tid, u16 initiator, u16 reason);
Johannes Berg849b7962009-02-10 21:25:54 +01001048void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1049 u16 initiator, u16 reason);
Johannes Berg2dace102009-02-10 21:25:52 +01001050void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
Johannes Bergde1ede72008-09-09 14:42:50 +02001051void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1052 struct sta_info *sta,
1053 struct ieee80211_mgmt *mgmt, size_t len);
1054void ieee80211_process_addba_resp(struct ieee80211_local *local,
1055 struct sta_info *sta,
1056 struct ieee80211_mgmt *mgmt,
1057 size_t len);
1058void ieee80211_process_addba_request(struct ieee80211_local *local,
1059 struct sta_info *sta,
1060 struct ieee80211_mgmt *mgmt,
1061 size_t len);
1062
Johannes Berg849b7962009-02-10 21:25:54 +01001063int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1064 enum ieee80211_back_parties initiator);
1065
Johannes Berg39192c02008-09-09 14:49:03 +02001066/* Spectrum management */
1067void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1068 struct ieee80211_mgmt *mgmt,
1069 size_t len);
1070
Johannes Bergf2753dd2009-04-14 10:09:24 +02001071/* Suspend/resume and hw reconfiguration */
1072int ieee80211_reconfig(struct ieee80211_local *local);
1073
Johannes Berg827b1fb2009-03-13 11:44:18 +01001074#ifdef CONFIG_PM
Bob Copeland665af4f2009-01-19 11:20:53 -05001075int __ieee80211_suspend(struct ieee80211_hw *hw);
Johannes Bergf2753dd2009-04-14 10:09:24 +02001076
1077static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1078{
1079 return ieee80211_reconfig(hw_to_local(hw));
1080}
Johannes Berg827b1fb2009-03-13 11:44:18 +01001081#else
1082static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1083{
1084 return 0;
1085}
Johannes Bergf2753dd2009-04-14 10:09:24 +02001086
Johannes Berg827b1fb2009-03-13 11:44:18 +01001087static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1088{
1089 return 0;
1090}
1091#endif
Bob Copeland665af4f2009-01-19 11:20:53 -05001092
Johannes Bergc2d15602007-07-27 15:43:23 +02001093/* utility functions/constants */
1094extern void *mac80211_wiphy_privid; /* for wiphy privid */
Ron Rindjunsky71364712007-12-25 17:00:36 +02001095u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
Johannes Berg05c914f2008-09-11 00:01:58 +02001096 enum nl80211_iftype type);
Johannes Bergc2d15602007-07-27 15:43:23 +02001097int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1098 int rate, int erp, int short_preamble);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +12001099void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
Johannes Berge6d6e342009-07-01 21:26:47 +02001100 struct ieee80211_hdr *hdr, const u8 *tsc,
1101 gfp_t gfp);
Johannes Berg5825fe102008-09-09 12:56:01 +02001102void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
Johannes Berge50db652008-09-09 15:07:09 +02001103void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1104 int encrypt);
Johannes Berg9c6bd792008-09-11 00:01:52 +02001105void ieee802_11_parse_elems(u8 *start, size_t len,
1106 struct ieee802_11_elems *elems);
Johannes Bergd91f36d2009-04-16 13:17:26 +02001107u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1108 struct ieee802_11_elems *elems,
1109 u64 filter, u32 crc);
Johannes Berg881d9482009-01-21 15:13:48 +01001110u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
Johannes Berg96dd22a2008-09-11 00:01:57 +02001111 enum ieee80211_band band);
Jiri Bencf0706e82007-05-05 11:45:53 -07001112
Kalle Valo520eb822008-12-18 23:35:27 +02001113void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1114void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1115void ieee80211_dynamic_ps_timer(unsigned long data);
Vivek Natarajana97b77b2008-12-23 18:39:02 -08001116void ieee80211_send_nullfunc(struct ieee80211_local *local,
1117 struct ieee80211_sub_if_data *sdata,
1118 int powersave);
Kalle Valo3cf335d2009-03-22 21:57:06 +02001119void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1120 struct ieee80211_hdr *hdr);
Kalle Valo04de8382009-03-22 21:57:35 +02001121void ieee80211_beacon_loss_work(struct work_struct *work);
Kalle Valo520eb822008-12-18 23:35:27 +02001122
Kalle Valoce7c9112008-12-18 23:35:20 +02001123void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1124 enum queue_stop_reason reason);
1125void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1126 enum queue_stop_reason reason);
Johannes Berg96f5e662009-02-12 00:51:53 +01001127void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1128 enum queue_stop_reason reason);
1129void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1130 enum queue_stop_reason reason);
Johannes Berg8f77f382009-06-07 21:58:37 +02001131void ieee80211_add_pending_skb(struct ieee80211_local *local,
1132 struct sk_buff *skb);
1133int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1134 struct sk_buff_head *skbs);
Kalle Valoce7c9112008-12-18 23:35:20 +02001135
Johannes Berg46900292009-02-15 12:44:28 +01001136void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1137 u16 transaction, u16 auth_alg,
Johannes Bergfffd0932009-07-08 14:22:54 +02001138 u8 *extra, size_t extra_len, const u8 *bssid,
1139 const u8 *key, u8 key_len, u8 key_idx);
Johannes Bergde95a542009-04-01 11:58:36 +02001140int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1141 const u8 *ie, size_t ie_len);
Johannes Berg46900292009-02-15 12:44:28 +01001142void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
Johannes Bergde95a542009-04-01 11:58:36 +02001143 const u8 *ssid, size_t ssid_len,
1144 const u8 *ie, size_t ie_len);
Johannes Berg46900292009-02-15 12:44:28 +01001145
1146void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1147 const size_t supp_rates_len,
1148 const u8 *supp_rates);
1149u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1150 struct ieee802_11_elems *elems,
1151 enum ieee80211_band band);
1152
Johannes Bergf4ea83d2008-06-30 15:10:46 +02001153#ifdef CONFIG_MAC80211_NOINLINE
Johannes Bergd9e8a702008-06-30 15:10:44 +02001154#define debug_noinline noinline
1155#else
1156#define debug_noinline
1157#endif
1158
Jiri Bencf0706e82007-05-05 11:45:53 -07001159#endif /* IEEE80211_I_H */