blob: f13d76c9b575706423f1dd3d79366078afd9df18 [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>
Johannes Bergfe7a5d52009-11-18 18:42:47 +010026#include <net/ieee80211_radiotap.h>
colin@cozybit.com93da9cc2008-10-21 12:03:48 -070027#include <net/cfg80211.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;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100171 struct ieee80211_local *local;
172 struct ieee80211_sub_if_data *sdata;
173 struct sta_info *sta;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100174 struct ieee80211_key *key;
Johannes Berg056cdd52008-03-26 23:21:47 +0100175
Johannes Berg056cdd52008-03-26 23:21:47 +0100176 unsigned int flags;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100177 int queue;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100178 u32 tkip_iv32;
179 u16 tkip_iv16;
Jiri Bencf0706e82007-05-05 11:45:53 -0700180};
181
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100182struct beacon_data {
183 u8 *head, *tail;
184 int head_len, tail_len;
185 int dtim_period;
186};
187
Jiri Bencf0706e82007-05-05 11:45:53 -0700188struct ieee80211_if_ap {
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100189 struct beacon_data *beacon;
Jiri Bencf0706e82007-05-05 11:45:53 -0700190
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400191 struct list_head vlans;
192
Jiri Bencf0706e82007-05-05 11:45:53 -0700193 /* yes, this looks ugly, but guarantees that we can later use
194 * bitmap_empty :)
Johannes Berg004c8722008-02-20 11:21:35 +0100195 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
Jiri Bencf0706e82007-05-05 11:45:53 -0700196 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
Jiri Bencf0706e82007-05-05 11:45:53 -0700197 struct sk_buff_head ps_bc_buf;
Johannes Berg056cdd52008-03-26 23:21:47 +0100198 atomic_t num_sta_ps; /* number of stations in PS mode */
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100199 int dtim_count;
Jiri Bencf0706e82007-05-05 11:45:53 -0700200};
201
202struct ieee80211_if_wds {
Jiri Bencf0706e82007-05-05 11:45:53 -0700203 struct sta_info *sta;
Johannes Berg056cdd52008-03-26 23:21:47 +0100204 u8 remote_addr[ETH_ALEN];
Jiri Bencf0706e82007-05-05 11:45:53 -0700205};
206
207struct ieee80211_if_vlan {
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400208 struct list_head list;
Felix Fietkauf14543ee2009-11-10 20:10:05 +0100209
210 /* used for all tx if the VLAN is configured to 4-addr mode */
211 struct sta_info *sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700212};
213
Luis Carlos Coboee385852008-02-23 15:17:11 +0100214struct mesh_stats {
Daniel Walkerc8a61a72009-08-18 10:59:00 -0700215 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
216 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
217 __u32 fwded_frames; /* Mesh total forwarded frames */
Luis Carlos Coboee385852008-02-23 15:17:11 +0100218 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
219 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
220 atomic_t estab_plinks;
221};
222
223#define PREQ_Q_F_START 0x1
224#define PREQ_Q_F_REFRESH 0x2
225struct mesh_preq_queue {
226 struct list_head list;
227 u8 dst[ETH_ALEN];
228 u8 flags;
229};
230
Johannes Berg77fdaa12009-07-07 03:45:17 +0200231enum ieee80211_mgd_state {
232 IEEE80211_MGD_STATE_IDLE,
233 IEEE80211_MGD_STATE_PROBE,
234 IEEE80211_MGD_STATE_AUTH,
235 IEEE80211_MGD_STATE_ASSOC,
236};
237
238struct ieee80211_mgd_work {
239 struct list_head list;
240 struct ieee80211_bss *bss;
241 int ie_len;
242 u8 prev_bssid[ETH_ALEN];
243 u8 ssid[IEEE80211_MAX_SSID_LEN];
244 u8 ssid_len;
245 unsigned long timeout;
246 enum ieee80211_mgd_state state;
247 u16 auth_alg, auth_transaction;
248
249 int tries;
250
Johannes Bergfffd0932009-07-08 14:22:54 +0200251 u8 key[WLAN_KEY_LEN_WEP104];
252 u8 key_len, key_idx;
253
Johannes Berg77fdaa12009-07-07 03:45:17 +0200254 /* must be last */
255 u8 ie[0]; /* for auth or assoc frame, not probe */
256};
257
Johannes Berg46900292009-02-15 12:44:28 +0100258/* flags used in struct ieee80211_if_managed.flags */
Johannes Bergab1faea2009-07-01 21:41:17 +0200259enum ieee80211_sta_flags {
Johannes Bergb291ba12009-07-10 15:29:03 +0200260 IEEE80211_STA_BEACON_POLL = BIT(0),
261 IEEE80211_STA_CONNECTION_POLL = BIT(1),
262 IEEE80211_STA_CONTROL_PORT = BIT(2),
263 IEEE80211_STA_WMM_ENABLED = BIT(3),
264 IEEE80211_STA_DISABLE_11N = BIT(4),
265 IEEE80211_STA_CSA_RECEIVED = BIT(5),
266 IEEE80211_STA_MFP_ENABLED = BIT(6),
Johannes Bergab1faea2009-07-01 21:41:17 +0200267};
268
Johannes Bergccd7b362008-09-11 00:01:56 +0200269/* flags for MLME request */
Johannes Bergab1faea2009-07-01 21:41:17 +0200270enum ieee80211_sta_request {
271 IEEE80211_STA_REQ_SCAN,
Johannes Bergab1faea2009-07-01 21:41:17 +0200272};
Tomas Winkler48c2fc52008-08-06 14:22:01 +0300273
Johannes Berg46900292009-02-15 12:44:28 +0100274struct ieee80211_if_managed {
Johannes Berg056cdd52008-03-26 23:21:47 +0100275 struct timer_list timer;
Johannes Bergb291ba12009-07-10 15:29:03 +0200276 struct timer_list conn_mon_timer;
277 struct timer_list bcn_mon_timer;
Sujithc481ec92009-01-06 09:28:37 +0530278 struct timer_list chswitch_timer;
Johannes Berg056cdd52008-03-26 23:21:47 +0100279 struct work_struct work;
Johannes Bergb291ba12009-07-10 15:29:03 +0200280 struct work_struct monitor_work;
Sujithc481ec92009-01-06 09:28:37 +0530281 struct work_struct chswitch_work;
Kalle Valo04de8382009-03-22 21:57:35 +0200282 struct work_struct beacon_loss_work;
Johannes Berg46900292009-02-15 12:44:28 +0100283
Johannes Bergb291ba12009-07-10 15:29:03 +0200284 unsigned long probe_timeout;
Maxim Levitskya43abf22009-07-31 18:54:12 +0300285 int probe_send_count;
Johannes Bergb291ba12009-07-10 15:29:03 +0200286
Johannes Berg77fdaa12009-07-07 03:45:17 +0200287 struct mutex mtx;
288 struct ieee80211_bss *associated;
Johannes Berge21546a2009-08-06 20:41:32 +0200289 struct ieee80211_mgd_work *old_associate_work;
Johannes Berg77fdaa12009-07-07 03:45:17 +0200290 struct list_head work_list;
Johannes Berg46900292009-02-15 12:44:28 +0100291
Johannes Berg77fdaa12009-07-07 03:45:17 +0200292 u8 bssid[ETH_ALEN];
Johannes Berg46900292009-02-15 12:44:28 +0100293
Jiri Bencf0706e82007-05-05 11:45:53 -0700294 u16 aid;
Johannes Berga7c1cfc2009-07-07 03:45:16 +0200295 u16 capab;
Jiri Bencf0706e82007-05-05 11:45:53 -0700296
Johannes Berg056cdd52008-03-26 23:21:47 +0100297 struct sk_buff_head skb_queue;
298
Johannes Berg5bb644a2009-05-17 11:40:42 +0200299 unsigned long timers_running; /* used for quiesce/restart */
Johannes Berg965beda2009-04-16 13:17:24 +0200300 bool powersave; /* powersave requested for this iface */
301
Johannes Berg056cdd52008-03-26 23:21:47 +0100302 unsigned long request;
303
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400304 unsigned int flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700305
Johannes Bergd91f36d2009-04-16 13:17:26 +0200306 u32 beacon_crc;
307
Jouni Malinenfdfacf02009-01-08 13:32:05 +0200308 enum {
309 IEEE80211_MFP_DISABLED,
310 IEEE80211_MFP_OPTIONAL,
311 IEEE80211_MFP_REQUIRED
312 } mfp; /* management frame protection */
313
Jiri Bencf0706e82007-05-05 11:45:53 -0700314 int wmm_last_param_set;
Johannes Berg9bc383d2009-11-19 11:55:19 +0100315
316 u8 use_4addr;
Jiri Bencf0706e82007-05-05 11:45:53 -0700317};
318
Johannes Berg46900292009-02-15 12:44:28 +0100319enum ieee80211_ibss_request {
320 IEEE80211_IBSS_REQ_RUN = 0,
321};
322
323struct ieee80211_if_ibss {
324 struct timer_list timer;
325 struct work_struct work;
326
327 struct sk_buff_head skb_queue;
328
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200329 unsigned long request;
330 unsigned long last_scan_completed;
Johannes Berg5bb644a2009-05-17 11:40:42 +0200331
332 bool timer_running;
333
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200334 bool fixed_bssid;
335 bool fixed_channel;
Johannes Bergfffd0932009-07-08 14:22:54 +0200336 bool privacy;
Johannes Berg46900292009-02-15 12:44:28 +0100337
338 u8 bssid[ETH_ALEN];
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200339 u8 ssid[IEEE80211_MAX_SSID_LEN];
340 u8 ssid_len, ie_len;
341 u8 *ie;
342 struct ieee80211_channel *channel;
Johannes Berg46900292009-02-15 12:44:28 +0100343
344 unsigned long ibss_join_req;
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200345 /* probe response/beacon for IBSS */
346 struct sk_buff *presp, *skb;
Johannes Berg46900292009-02-15 12:44:28 +0100347
348 enum {
349 IEEE80211_IBSS_MLME_SEARCH,
350 IEEE80211_IBSS_MLME_JOINED,
351 } state;
352};
353
Johannes Berg472dbc42008-09-11 00:01:49 +0200354struct ieee80211_if_mesh {
355 struct work_struct work;
356 struct timer_list housekeeping_timer;
357 struct timer_list mesh_path_timer;
Rui Pauloe304bfd2009-11-09 23:46:56 +0000358 struct timer_list mesh_path_root_timer;
Johannes Berg472dbc42008-09-11 00:01:49 +0200359 struct sk_buff_head skb_queue;
360
Johannes Berg5bb644a2009-05-17 11:40:42 +0200361 unsigned long timers_running;
362
Javier Cardona18889232009-08-10 12:15:52 -0700363 unsigned long wrkq_flags;
Johannes Berg472dbc42008-09-11 00:01:49 +0200364
365 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
366 size_t mesh_id_len;
367 /* Active Path Selection Protocol Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000368 u8 mesh_pp_id;
Johannes Berg472dbc42008-09-11 00:01:49 +0200369 /* Active Path Selection Metric Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000370 u8 mesh_pm_id;
Johannes Berg472dbc42008-09-11 00:01:49 +0200371 /* Congestion Control Mode Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000372 u8 mesh_cc_id;
Javier Cardona9e03fdf2009-08-20 09:21:45 -0700373 /* Synchronization Protocol Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000374 u8 mesh_sp_id;
Javier Cardona9e03fdf2009-08-20 09:21:45 -0700375 /* Authentication Protocol Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000376 u8 mesh_auth_id;
Rui Paulod19b3bf2009-11-09 23:46:55 +0000377 /* Local mesh Sequence Number */
378 u32 sn;
Johannes Berg472dbc42008-09-11 00:01:49 +0200379 /* Last used PREQ ID */
380 u32 preq_id;
381 atomic_t mpaths;
Rui Paulod19b3bf2009-11-09 23:46:55 +0000382 /* Timestamp of last SN update */
383 unsigned long last_sn_update;
384 /* Timestamp of last SN sent */
Johannes Berg472dbc42008-09-11 00:01:49 +0200385 unsigned long last_preq;
386 struct mesh_rmc *rmc;
387 spinlock_t mesh_preq_queue_lock;
388 struct mesh_preq_queue preq_queue;
389 int preq_queue_len;
390 struct mesh_stats mshstats;
391 struct mesh_config mshcfg;
392 u32 mesh_seqnum;
393 bool accepting_plinks;
Johannes Berg472dbc42008-09-11 00:01:49 +0200394};
Johannes Berg902acc72008-02-23 15:17:19 +0100395
396#ifdef CONFIG_MAC80211_MESH
Johannes Berg472dbc42008-09-11 00:01:49 +0200397#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
398 do { (msh)->mshstats.name++; } while (0)
Johannes Berg902acc72008-02-23 15:17:19 +0100399#else
Johannes Berg472dbc42008-09-11 00:01:49 +0200400#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
Johannes Berg902acc72008-02-23 15:17:19 +0100401 do { } while (0)
402#endif
Jiri Bencf0706e82007-05-05 11:45:53 -0700403
Johannes Berg213cd112008-09-11 00:01:54 +0200404/**
405 * enum ieee80211_sub_if_data_flags - virtual interface flags
406 *
407 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
408 * @IEEE80211_SDATA_PROMISC: interface is promisc
Johannes Berg213cd112008-09-11 00:01:54 +0200409 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
410 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
411 * associated stations and deliver multicast frames both
412 * back to wireless media and to the local net stack.
413 */
414enum ieee80211_sub_if_data_flags {
415 IEEE80211_SDATA_ALLMULTI = BIT(0),
416 IEEE80211_SDATA_PROMISC = BIT(1),
Johannes Berg7986cf92009-03-21 17:08:43 +0100417 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
418 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
Johannes Berg213cd112008-09-11 00:01:54 +0200419};
420
Jiri Bencf0706e82007-05-05 11:45:53 -0700421struct ieee80211_sub_if_data {
422 struct list_head list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700423
424 struct wireless_dev wdev;
425
Johannes Berg11a843b2007-08-28 17:01:55 -0400426 /* keys */
427 struct list_head key_list;
428
Jiri Bencf0706e82007-05-05 11:45:53 -0700429 struct net_device *dev;
430 struct ieee80211_local *local;
431
Jiri Slaby13262ff2007-08-28 17:01:54 -0400432 unsigned int flags;
Daniel Drake7e9ed182007-07-27 15:43:24 +0200433
Jiri Bencf0706e82007-05-05 11:45:53 -0700434 int drop_unencrypted;
Jiri Bencf0706e82007-05-05 11:45:53 -0700435
Johannes Berg413ad502009-05-08 21:21:06 +0200436 /*
437 * keep track of whether the HT opmode (stored in
438 * vif.bss_info.ht_operation_mode) is valid.
439 */
440 bool ht_opmode_valid;
441
Jiri Bencf0706e82007-05-05 11:45:53 -0700442 /* Fragment table for host-based reassembly */
443 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
444 unsigned int fragment_next;
445
446#define NUM_DEFAULT_KEYS 4
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200447#define NUM_DEFAULT_MGMT_KEYS 2
448 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
Jiri Bencf0706e82007-05-05 11:45:53 -0700449 struct ieee80211_key *default_key;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200450 struct ieee80211_key *default_mgmt_key;
Jiri Bencf0706e82007-05-05 11:45:53 -0700451
Johannes Berg94778282008-10-10 13:21:59 +0200452 u16 sequence_number;
453
Johannes Berg3e122be2008-07-09 14:40:34 +0200454 /*
455 * AP this belongs to: self in AP mode and
456 * corresponding AP in VLAN mode, NULL for
457 * all others (might be needed later in IBSS)
458 */
459 struct ieee80211_if_ap *bss;
460
461 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
462 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
Jiri Bencf0706e82007-05-05 11:45:53 -0700463
464 union {
465 struct ieee80211_if_ap ap;
466 struct ieee80211_if_wds wds;
467 struct ieee80211_if_vlan vlan;
Johannes Berg46900292009-02-15 12:44:28 +0100468 struct ieee80211_if_managed mgd;
469 struct ieee80211_if_ibss ibss;
Johannes Berg472dbc42008-09-11 00:01:49 +0200470#ifdef CONFIG_MAC80211_MESH
471 struct ieee80211_if_mesh mesh;
472#endif
Michael Wu8cc9a732008-01-31 19:48:23 +0100473 u32 mntr_flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700474 } u;
Jiri Bence9f207f2007-05-05 11:46:38 -0700475
476#ifdef CONFIG_MAC80211_DEBUGFS
Jouni Malinen2b58b202008-08-28 15:12:06 +0300477 struct {
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100478 struct dentry *dir;
Jouni Malinen2b58b202008-08-28 15:12:06 +0300479 struct dentry *default_key;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200480 struct dentry *default_mgmt_key;
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100481 } debugfs;
Jiri Bence9f207f2007-05-05 11:46:38 -0700482#endif
Johannes Berg32bfd352007-12-19 01:31:26 +0100483 /* must be last, dynamically sized area in this! */
484 struct ieee80211_vif vif;
Jiri Bencf0706e82007-05-05 11:45:53 -0700485};
486
Johannes Berg32bfd352007-12-19 01:31:26 +0100487static inline
488struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
489{
490 return container_of(p, struct ieee80211_sub_if_data, vif);
491}
492
Johannes Berg472dbc42008-09-11 00:01:49 +0200493static inline void
494ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
495 u8 mesh_id_len, u8 *mesh_id)
496{
497#ifdef CONFIG_MAC80211_MESH
498 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
499 ifmsh->mesh_id_len = mesh_id_len;
500 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
501#else
502 WARN_ON(1);
503#endif
504}
505
Jiri Bencf0706e82007-05-05 11:45:53 -0700506enum {
507 IEEE80211_RX_MSG = 1,
508 IEEE80211_TX_STATUS_MSG = 2,
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +0200509 IEEE80211_DELBA_MSG = 3,
510 IEEE80211_ADDBA_MSG = 4,
Jiri Bencf0706e82007-05-05 11:45:53 -0700511};
512
Kalle Valoce7c9112008-12-18 23:35:20 +0200513enum queue_stop_reason {
514 IEEE80211_QUEUE_STOP_REASON_DRIVER,
Kalle Valo520eb822008-12-18 23:35:27 +0200515 IEEE80211_QUEUE_STOP_REASON_PS,
Johannes Berg96f5e662009-02-12 00:51:53 +0100516 IEEE80211_QUEUE_STOP_REASON_CSA,
517 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
Johannes Berg25420602009-03-13 11:43:36 +0100518 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
Johannes Berg8f77f382009-06-07 21:58:37 +0200519 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
Kalle Valoce7c9112008-12-18 23:35:20 +0200520};
521
Helmut Schaa142b9f52009-07-23 13:18:01 +0200522/**
523 * mac80211 scan flags - currently active scan mode
524 *
525 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
526 * well be on the operating channel
527 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
528 * determine if we are on the operating channel or not
529 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
530 * gets only set in conjunction with SCAN_SW_SCANNING
531 */
Helmut Schaafbe9c422009-07-23 12:14:04 +0200532enum {
533 SCAN_SW_SCANNING,
Helmut Schaa142b9f52009-07-23 13:18:01 +0200534 SCAN_HW_SCANNING,
535 SCAN_OFF_CHANNEL,
536};
537
538/**
539 * enum mac80211_scan_state - scan state machine states
540 *
541 * @SCAN_DECISION: Main entry point to the scan state machine, this state
542 * determines if we should keep on scanning or switch back to the
543 * operating channel
544 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
545 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
546 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
547 * about us leaving the channel and stop all associated STA interfaces
548 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
549 * AP about us being back and restart all associated STA interfaces
550 */
551enum mac80211_scan_state {
552 SCAN_DECISION,
553 SCAN_SET_CHANNEL,
554 SCAN_SEND_PROBE,
555 SCAN_LEAVE_OPER_CHANNEL,
556 SCAN_ENTER_OPER_CHANNEL,
Helmut Schaafbe9c422009-07-23 12:14:04 +0200557};
558
Jiri Bencf0706e82007-05-05 11:45:53 -0700559struct ieee80211_local {
560 /* embed the driver visible part.
561 * don't cast (use the static inlines below), but we keep
562 * it first anyway so they become a no-op */
563 struct ieee80211_hw hw;
564
565 const struct ieee80211_ops *ops;
566
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400567 /*
568 * private workqueue to mac80211. mac80211 makes this accessible
569 * via ieee80211_queue_work()
570 */
571 struct workqueue_struct *workqueue;
572
Johannes Berge4e72fb2009-03-23 17:28:42 +0100573 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
Johannes Berg96f5e662009-02-12 00:51:53 +0100574 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
Kalle Valoce7c9112008-12-18 23:35:20 +0200575 spinlock_t queue_stop_reason_lock;
Johannes Berg96f5e662009-02-12 00:51:53 +0100576
Jiri Bencf0706e82007-05-05 11:45:53 -0700577 int open_count;
Michael Wu3d30d942008-01-31 19:48:27 +0100578 int monitors, cooked_mntrs;
Michael Wu8cc9a732008-01-31 19:48:23 +0100579 /* number of interfaces with corresponding FIF_ flags */
Igor Perminove3b90ca2009-08-04 16:48:51 +0400580 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll;
Johannes Berg4150c572007-09-17 01:29:23 -0400581 unsigned int filter_flags; /* FIF_* */
Jiri Bencf0706e82007-05-05 11:45:53 -0700582 struct iw_statistics wstats;
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200583
584 /* protects the aggregated multicast list and filter calls */
585 spinlock_t filter_lock;
586
Johannes Berg3ac64be2009-08-17 16:16:53 +0200587 /* used for uploading changed mc list */
588 struct work_struct reconfig_filter;
589
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200590 /* aggregated multicast list */
591 struct dev_addr_list *mc_list;
592 int mc_count;
593
Johannes Bergd0709a62008-02-25 16:27:46 +0100594 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
Johannes Berg5bb644a2009-05-17 11:40:42 +0200595
596 /*
597 * suspended is true if we finished all the suspend _and_ we have
598 * not yet come up from resume. This is to be used by mac80211
599 * to ensure driver sanity during suspend and mac80211's own
600 * sanity. It can eventually be used for WoW as well.
601 */
602 bool suspended;
603
604 /*
605 * quiescing is true during the suspend process _only_ to
606 * ease timer cancelling etc.
607 */
608 bool quiescing;
609
Johannes Bergea77f122009-08-21 14:44:45 +0200610 /* device is started */
611 bool started;
612
Johannes Bergb306f452007-07-10 19:32:08 +0200613 int tx_headroom; /* required headroom for hardware/radiotap */
Jiri Bencf0706e82007-05-05 11:45:53 -0700614
Jiri Bencf0706e82007-05-05 11:45:53 -0700615 /* Tasklet and skb queue to process calls from IRQ mode. All frames
616 * added to skb_queue will be processed, but frames in
617 * skb_queue_unreliable may be dropped if the total length of these
618 * queues increases over the limit. */
619#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
620 struct tasklet_struct tasklet;
621 struct sk_buff_head skb_queue;
622 struct sk_buff_head skb_queue_unreliable;
623
Johannes Bergd0709a62008-02-25 16:27:46 +0100624 /* Station data */
625 /*
626 * The lock only protects the list, hash, timer and counter
627 * against manipulation, reads are done in RCU. Additionally,
Johannes Bergb16bd152008-04-11 21:40:35 +0200628 * the lock protects each BSS's TIM bitmap.
Johannes Bergd0709a62008-02-25 16:27:46 +0100629 */
630 spinlock_t sta_lock;
631 unsigned long num_sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700632 struct list_head sta_list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700633 struct sta_info *sta_hash[STA_HASH_SIZE];
634 struct timer_list sta_cleanup;
Johannes Bergf5ea9122009-08-07 16:17:38 +0200635 int sta_generation;
Jiri Bencf0706e82007-05-05 11:45:53 -0700636
Johannes Berg2a577d92009-03-23 17:28:37 +0100637 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
Jiri Bencf0706e82007-05-05 11:45:53 -0700638 struct tasklet_struct tx_pending_tasklet;
639
Johannes Bergcd8ffc82009-03-23 17:28:41 +0100640 /*
641 * This lock is used to prevent concurrent A-MPDU
642 * session start/stop processing, this thus also
643 * synchronises the ->ampdu_action() callback to
644 * drivers and limits it to one at a time.
645 */
646 spinlock_t ampdu_lock;
647
Johannes Berg53918992007-09-26 15:19:47 +0200648 /* number of interfaces with corresponding IFF_ flags */
649 atomic_t iff_allmultis, iff_promiscs;
Jiri Bencf0706e82007-05-05 11:45:53 -0700650
651 struct rate_control_ref *rate_ctrl;
652
Jiri Bencf0706e82007-05-05 11:45:53 -0700653 struct crypto_blkcipher *wep_tx_tfm;
654 struct crypto_blkcipher *wep_rx_tfm;
655 u32 wep_iv;
Jiri Bencf0706e82007-05-05 11:45:53 -0700656
Johannes Bergc771c9d2009-01-23 22:54:03 +0100657 /* see iface.c */
Johannes Berg79010422007-09-18 17:29:21 -0400658 struct list_head interfaces;
Johannes Bergc771c9d2009-01-23 22:54:03 +0100659 struct mutex iflist_mtx;
Johannes Berg79010422007-09-18 17:29:21 -0400660
Johannes Bergb16bd152008-04-11 21:40:35 +0200661 /*
662 * Key lock, protects sdata's key_list and sta_info's
663 * key pointers (write access, they're RCU.)
664 */
665 spinlock_t key_lock;
666
667
Johannes Bergc2b13452008-09-11 00:01:55 +0200668 /* Scanning and BSS list */
Johannes Bergf3b85252009-04-23 16:01:47 +0200669 struct mutex scan_mtx;
Helmut Schaafbe9c422009-07-23 12:14:04 +0200670 unsigned long scanning;
Johannes Berg2a519312009-02-10 21:25:55 +0100671 struct cfg80211_ssid scan_ssid;
Johannes Berg5ba63532009-08-07 17:54:07 +0200672 struct cfg80211_scan_request *int_scan_req;
Johannes Berg4d36ec582009-10-27 20:59:55 +0100673 struct cfg80211_scan_request *scan_req, *hw_scan_req;
Johannes Berg2a519312009-02-10 21:25:55 +0100674 struct ieee80211_channel *scan_channel;
Johannes Berg4d36ec582009-10-27 20:59:55 +0100675 enum ieee80211_band hw_scan_band;
Jiri Bencf0706e82007-05-05 11:45:53 -0700676 int scan_channel_idx;
Johannes Bergde95a542009-04-01 11:58:36 +0200677 int scan_ies_len;
Johannes Berg8318d782008-01-24 19:38:38 +0100678
Helmut Schaa977923b2009-07-23 12:14:20 +0200679 enum mac80211_scan_state next_scan_state;
Jiri Bencf0706e82007-05-05 11:45:53 -0700680 struct delayed_work scan_work;
Johannes Berg491775a2008-09-08 17:44:23 +0200681 struct ieee80211_sub_if_data *scan_sdata;
Sujith094d05d2008-12-12 11:57:43 +0530682 enum nl80211_channel_type oper_channel_type;
Johannes Berg2a519312009-02-10 21:25:55 +0100683 struct ieee80211_channel *oper_channel, *csa_channel;
Jiri Bencf0706e82007-05-05 11:45:53 -0700684
685 /* SNMP counters */
686 /* dot11CountersTable */
687 u32 dot11TransmittedFragmentCount;
688 u32 dot11MulticastTransmittedFrameCount;
689 u32 dot11FailedCount;
690 u32 dot11RetryCount;
691 u32 dot11MultipleRetryCount;
692 u32 dot11FrameDuplicateCount;
693 u32 dot11ReceivedFragmentCount;
694 u32 dot11MulticastReceivedFrameCount;
695 u32 dot11TransmittedFrameCount;
Jiri Bencf0706e82007-05-05 11:45:53 -0700696
697#ifdef CONFIG_MAC80211_LEDS
698 int tx_led_counter, rx_led_counter;
Ivo van Doorncdcb0062008-01-07 19:45:24 +0100699 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
700 char tx_led_name[32], rx_led_name[32],
701 assoc_led_name[32], radio_led_name[32];
Jiri Bencf0706e82007-05-05 11:45:53 -0700702#endif
703
Jiri Bence9f207f2007-05-05 11:46:38 -0700704#ifdef CONFIG_MAC80211_DEBUGFS
705 struct work_struct sta_debugfs_add;
706#endif
707
Jiri Bencf0706e82007-05-05 11:45:53 -0700708#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
709 /* TX/RX handler statistics */
710 unsigned int tx_handlers_drop;
711 unsigned int tx_handlers_queued;
712 unsigned int tx_handlers_drop_unencrypted;
713 unsigned int tx_handlers_drop_fragment;
714 unsigned int tx_handlers_drop_wep;
715 unsigned int tx_handlers_drop_not_assoc;
716 unsigned int tx_handlers_drop_unauth_port;
717 unsigned int rx_handlers_drop;
718 unsigned int rx_handlers_queued;
719 unsigned int rx_handlers_drop_nullfunc;
720 unsigned int rx_handlers_drop_defrag;
721 unsigned int rx_handlers_drop_short;
722 unsigned int rx_handlers_drop_passive_scan;
723 unsigned int tx_expand_skb_head;
724 unsigned int tx_expand_skb_head_cloned;
725 unsigned int rx_expand_skb_head;
726 unsigned int rx_expand_skb_head2;
727 unsigned int rx_handlers_fragments;
728 unsigned int tx_status_drop;
Jiri Bencf0706e82007-05-05 11:45:53 -0700729#define I802_DEBUG_INC(c) (c)++
730#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
731#define I802_DEBUG_INC(c) do { } while (0)
732#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
733
734
Jiri Bencf0706e82007-05-05 11:45:53 -0700735 int total_ps_buffered; /* total number of all buffered unicast and
736 * multicast packets for power saving stations
737 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700738 int wifi_wme_noack_test;
739 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
Kalle Valo520eb822008-12-18 23:35:27 +0200740
Kalle Valo572e0012009-02-10 17:09:31 +0200741 bool pspolling;
Johannes Berg965beda2009-04-16 13:17:24 +0200742 /*
743 * PS can only be enabled when we have exactly one managed
744 * interface (and monitors) in PS, this then points there.
745 */
746 struct ieee80211_sub_if_data *ps_sdata;
Kalle Valo520eb822008-12-18 23:35:27 +0200747 struct work_struct dynamic_ps_enable_work;
748 struct work_struct dynamic_ps_disable_work;
749 struct timer_list dynamic_ps_timer;
Johannes Berg10f644a2009-04-16 13:17:25 +0200750 struct notifier_block network_latency_notifier;
Jiri Bencf0706e82007-05-05 11:45:53 -0700751
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100752 int user_power_level; /* in dBm */
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530753 int power_constr_level; /* in dBm */
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100754
Johannes Bergf2753dd2009-04-14 10:09:24 +0200755 struct work_struct restart_work;
756
Jiri Bence9f207f2007-05-05 11:46:38 -0700757#ifdef CONFIG_MAC80211_DEBUGFS
758 struct local_debugfsdentries {
Johannes Berg4b7679a2008-09-18 18:14:18 +0200759 struct dentry *rcdir;
Jiri Bence9f207f2007-05-05 11:46:38 -0700760 struct dentry *stations;
761 struct dentry *keys;
762 } debugfs;
763#endif
Jiri Bencf0706e82007-05-05 11:45:53 -0700764};
765
Johannes Berg3e122be2008-07-09 14:40:34 +0200766static inline struct ieee80211_sub_if_data *
767IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
768{
Johannes Berg3e122be2008-07-09 14:40:34 +0200769 return netdev_priv(dev);
770}
771
Johannes Bergc951ad32009-11-16 12:00:38 +0100772/* this struct represents 802.11n's RA/TID combination along with our vif */
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +0200773struct ieee80211_ra_tid {
Johannes Bergc951ad32009-11-16 12:00:38 +0100774 struct ieee80211_vif *vif;
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +0200775 u8 ra[ETH_ALEN];
776 u16 tid;
777};
778
Luis Carlos Coboee385852008-02-23 15:17:11 +0100779/* Parsed Information Elements */
780struct ieee802_11_elems {
Jouni Malinen43ac2ca2008-08-15 22:21:27 +0300781 u8 *ie_start;
782 size_t total_len;
783
Luis Carlos Coboee385852008-02-23 15:17:11 +0100784 /* pointers to IEs */
785 u8 *ssid;
786 u8 *supp_rates;
787 u8 *fh_params;
788 u8 *ds_params;
789 u8 *cf_params;
Johannes Berge7ec86f2009-04-18 17:33:24 +0200790 struct ieee80211_tim_ie *tim;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100791 u8 *ibss_params;
792 u8 *challenge;
793 u8 *wpa;
794 u8 *rsn;
795 u8 *erp_info;
796 u8 *ext_supp_rates;
797 u8 *wmm_info;
798 u8 *wmm_param;
Johannes Berg09914812008-10-07 19:31:17 +0200799 struct ieee80211_ht_cap *ht_cap_elem;
Johannes Bergd9fe60d2008-10-09 12:13:49 +0200800 struct ieee80211_ht_info *ht_info_elem;
Rui Paulo136cfa22009-11-18 18:40:00 +0000801 struct ieee80211_meshconf_ie *mesh_config;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100802 u8 *mesh_id;
803 u8 *peer_link;
804 u8 *preq;
805 u8 *prep;
806 u8 *perr;
Rui Paulo90a5e162009-11-11 00:01:31 +0000807 struct ieee80211_rann_ie *rann;
Assaf Kraussf2df3852008-06-15 18:23:29 +0300808 u8 *ch_switch_elem;
809 u8 *country_elem;
810 u8 *pwr_constr_elem;
811 u8 *quiet_elem; /* first quite element */
Jouni Malinenf797eb72009-01-19 18:48:46 +0200812 u8 *timeout_int;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100813
814 /* length of them, respectively */
815 u8 ssid_len;
816 u8 supp_rates_len;
817 u8 fh_params_len;
818 u8 ds_params_len;
819 u8 cf_params_len;
820 u8 tim_len;
821 u8 ibss_params_len;
822 u8 challenge_len;
823 u8 wpa_len;
824 u8 rsn_len;
825 u8 erp_info_len;
826 u8 ext_supp_rates_len;
827 u8 wmm_info_len;
828 u8 wmm_param_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100829 u8 mesh_id_len;
830 u8 peer_link_len;
831 u8 preq_len;
832 u8 prep_len;
833 u8 perr_len;
Assaf Kraussf2df3852008-06-15 18:23:29 +0300834 u8 ch_switch_elem_len;
835 u8 country_elem_len;
836 u8 pwr_constr_elem_len;
837 u8 quiet_elem_len;
838 u8 num_of_quiet_elem; /* can be more the one */
Jouni Malinenf797eb72009-01-19 18:48:46 +0200839 u8 timeout_int_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100840};
841
Jiri Bencf0706e82007-05-05 11:45:53 -0700842static inline struct ieee80211_local *hw_to_local(
843 struct ieee80211_hw *hw)
844{
845 return container_of(hw, struct ieee80211_local, hw);
846}
847
848static inline struct ieee80211_hw *local_to_hw(
849 struct ieee80211_local *local)
850{
851 return &local->hw;
852}
853
Jiri Bencf0706e82007-05-05 11:45:53 -0700854
Johannes Berg571ecf62007-07-27 15:43:22 +0200855static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
856{
857 return compare_ether_addr(raddr, addr) == 0 ||
858 is_broadcast_ether_addr(raddr);
859}
860
861
Johannes Berge8975582008-10-09 12:18:51 +0200862int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
Johannes Berg5cf121c2008-02-25 16:27:43 +0100863void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200864void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
865 u32 changed);
Johannes Berg0d143fe2008-09-11 00:01:59 +0200866void ieee80211_configure_filter(struct ieee80211_local *local);
Johannes Berg46900292009-02-15 12:44:28 +0100867u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
Jiri Bencf0706e82007-05-05 11:45:53 -0700868
Johannes Berg46900292009-02-15 12:44:28 +0100869/* STA code */
Johannes Berg9c6bd792008-09-11 00:01:52 +0200870void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
Johannes Berg77fdaa12009-07-07 03:45:17 +0200871int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
872 struct cfg80211_auth_request *req);
873int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
874 struct cfg80211_assoc_request *req);
875int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
Johannes Berg667503dd2009-07-07 03:56:11 +0200876 struct cfg80211_deauth_request *req,
877 void *cookie);
Johannes Berg77fdaa12009-07-07 03:45:17 +0200878int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
Johannes Berg667503dd2009-07-07 03:56:11 +0200879 struct cfg80211_disassoc_request *req,
880 void *cookie);
Johannes Berg46900292009-02-15 12:44:28 +0100881ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
Johannes Bergf1d58c22009-06-17 13:13:00 +0200882 struct sk_buff *skb);
Kalle Valo572e0012009-02-10 17:09:31 +0200883void ieee80211_send_pspoll(struct ieee80211_local *local,
884 struct ieee80211_sub_if_data *sdata);
Johannes Berg10f644a2009-04-16 13:17:25 +0200885void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
886int ieee80211_max_network_latency(struct notifier_block *nb,
887 unsigned long data, void *dummy);
Johannes Bergcc32abd2009-05-15 11:52:31 +0200888void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
889 struct ieee80211_channel_sw_ie *sw_elem,
890 struct ieee80211_bss *bss);
Johannes Berg5bb644a2009-05-17 11:40:42 +0200891void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
892void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200893
Johannes Berg46900292009-02-15 12:44:28 +0100894/* IBSS code */
Johannes Berg46900292009-02-15 12:44:28 +0100895void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
896void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
897ieee80211_rx_result
Johannes Bergf1d58c22009-06-17 13:13:00 +0200898ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
Johannes Berg46900292009-02-15 12:44:28 +0100899struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
900 u8 *bssid, u8 *addr, u32 supp_rates);
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200901int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
902 struct cfg80211_ibss_params *params);
903int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
Johannes Berg5bb644a2009-05-17 11:40:42 +0200904void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
905void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
Johannes Berg46900292009-02-15 12:44:28 +0100906
Johannes Berg9c6bd792008-09-11 00:01:52 +0200907/* scan/BSS handling */
Johannes Berg46900292009-02-15 12:44:28 +0100908void ieee80211_scan_work(struct work_struct *work);
Johannes Bergf3b85252009-04-23 16:01:47 +0200909int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
910 const u8 *ssid, u8 ssid_len);
Johannes Bergc2b13452008-09-11 00:01:55 +0200911int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
Johannes Berg2a519312009-02-10 21:25:55 +0100912 struct cfg80211_scan_request *req);
Johannes Berg5bb644a2009-05-17 11:40:42 +0200913void ieee80211_scan_cancel(struct ieee80211_local *local);
Johannes Bergc2b13452008-09-11 00:01:55 +0200914ieee80211_rx_result
Johannes Bergf1d58c22009-06-17 13:13:00 +0200915ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200916
Johannes Berg0a51b272008-09-08 17:44:25 +0200917void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
Johannes Bergc2b13452008-09-11 00:01:55 +0200918struct ieee80211_bss *
Johannes Berg98c8fcc2008-09-08 17:44:26 +0200919ieee80211_bss_info_update(struct ieee80211_local *local,
920 struct ieee80211_rx_status *rx_status,
921 struct ieee80211_mgmt *mgmt,
922 size_t len,
923 struct ieee802_11_elems *elems,
Johannes Berg2a519312009-02-10 21:25:55 +0100924 struct ieee80211_channel *channel,
925 bool beacon);
Johannes Bergc2b13452008-09-11 00:01:55 +0200926struct ieee80211_bss *
Johannes Berg5484e232008-09-08 17:44:27 +0200927ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
928 u8 *ssid, u8 ssid_len);
Johannes Berg98c8fcc2008-09-08 17:44:26 +0200929void ieee80211_rx_bss_put(struct ieee80211_local *local,
Johannes Bergc2b13452008-09-11 00:01:55 +0200930 struct ieee80211_bss *bss);
Luis Carlos Coboee385852008-02-23 15:17:11 +0100931
Johannes Berg3e122be2008-07-09 14:40:34 +0200932/* interface handling */
933int ieee80211_if_add(struct ieee80211_local *local, const char *name,
Johannes Berg05c914f2008-09-11 00:01:58 +0200934 struct net_device **new_dev, enum nl80211_iftype type,
Luis Carlos Coboee385852008-02-23 15:17:11 +0100935 struct vif_params *params);
Johannes Bergf3947e22008-07-09 14:40:36 +0200936int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
Johannes Berg05c914f2008-09-11 00:01:58 +0200937 enum nl80211_iftype type);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200938void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
Johannes Berg75636522008-07-09 14:40:35 +0200939void ieee80211_remove_interfaces(struct ieee80211_local *local);
Johannes Berg5cff20e2009-04-29 12:26:17 +0200940u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
941void ieee80211_recalc_idle(struct ieee80211_local *local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700942
Johannes Berge2ebc742007-07-27 15:43:22 +0200943/* tx handling */
Johannes Berge2ebc742007-07-27 15:43:22 +0200944void ieee80211_clear_tx_pending(struct ieee80211_local *local);
945void ieee80211_tx_pending(unsigned long data);
Stephen Hemmingerd0cf9c02009-08-31 19:50:57 +0000946netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
947 struct net_device *dev);
948netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
949 struct net_device *dev);
Johannes Berge2ebc742007-07-27 15:43:22 +0200950
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100951/*
952 * radiotap header for status frames
953 */
954struct ieee80211_tx_status_rtap_hdr {
955 struct ieee80211_radiotap_header hdr;
956 u8 rate;
957 u8 padding_for_rate;
958 __le16 tx_flags;
959 u8 data_retries;
960} __attribute__ ((packed));
961
962
Johannes Bergde1ede72008-09-09 14:42:50 +0200963/* HT */
Johannes Bergae5eb022008-10-14 16:58:37 +0200964void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
965 struct ieee80211_ht_cap *ht_cap_ie,
Johannes Bergd9fe60d2008-10-09 12:13:49 +0200966 struct ieee80211_sta_ht_cap *ht_cap);
Johannes Bergde1ede72008-09-09 14:42:50 +0200967void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
Johannes Bergb8695a82009-02-10 21:25:46 +0100968void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
969 const u8 *da, u16 tid,
970 u16 initiator, u16 reason_code);
Johannes Bergde1ede72008-09-09 14:42:50 +0200971
972void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
973 u16 tid, u16 initiator, u16 reason);
Johannes Berg849b7962009-02-10 21:25:54 +0100974void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
975 u16 initiator, u16 reason);
Johannes Berg2dace102009-02-10 21:25:52 +0100976void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
Johannes Bergde1ede72008-09-09 14:42:50 +0200977void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
978 struct sta_info *sta,
979 struct ieee80211_mgmt *mgmt, size_t len);
980void ieee80211_process_addba_resp(struct ieee80211_local *local,
981 struct sta_info *sta,
982 struct ieee80211_mgmt *mgmt,
983 size_t len);
984void ieee80211_process_addba_request(struct ieee80211_local *local,
985 struct sta_info *sta,
986 struct ieee80211_mgmt *mgmt,
987 size_t len);
988
Johannes Berg849b7962009-02-10 21:25:54 +0100989int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
990 enum ieee80211_back_parties initiator);
991
Johannes Berg39192c02008-09-09 14:49:03 +0200992/* Spectrum management */
993void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
994 struct ieee80211_mgmt *mgmt,
995 size_t len);
996
Johannes Bergf2753dd2009-04-14 10:09:24 +0200997/* Suspend/resume and hw reconfiguration */
998int ieee80211_reconfig(struct ieee80211_local *local);
Johannes Berg84f6a012009-08-20 20:02:20 +0200999void ieee80211_stop_device(struct ieee80211_local *local);
Johannes Bergf2753dd2009-04-14 10:09:24 +02001000
Johannes Berg827b1fb2009-03-13 11:44:18 +01001001#ifdef CONFIG_PM
Bob Copeland665af4f2009-01-19 11:20:53 -05001002int __ieee80211_suspend(struct ieee80211_hw *hw);
Johannes Bergf2753dd2009-04-14 10:09:24 +02001003
1004static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1005{
1006 return ieee80211_reconfig(hw_to_local(hw));
1007}
Johannes Berg827b1fb2009-03-13 11:44:18 +01001008#else
1009static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1010{
1011 return 0;
1012}
Johannes Bergf2753dd2009-04-14 10:09:24 +02001013
Johannes Berg827b1fb2009-03-13 11:44:18 +01001014static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1015{
1016 return 0;
1017}
1018#endif
Bob Copeland665af4f2009-01-19 11:20:53 -05001019
Johannes Bergc2d15602007-07-27 15:43:23 +02001020/* utility functions/constants */
1021extern void *mac80211_wiphy_privid; /* for wiphy privid */
Ron Rindjunsky71364712007-12-25 17:00:36 +02001022u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
Johannes Berg05c914f2008-09-11 00:01:58 +02001023 enum nl80211_iftype type);
Johannes Bergc2d15602007-07-27 15:43:23 +02001024int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1025 int rate, int erp, int short_preamble);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +12001026void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
Johannes Berge6d6e342009-07-01 21:26:47 +02001027 struct ieee80211_hdr *hdr, const u8 *tsc,
1028 gfp_t gfp);
Johannes Berg5825fe102008-09-09 12:56:01 +02001029void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
Johannes Berg62ae67b2009-11-18 18:42:05 +01001030void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
Johannes Berg9c6bd792008-09-11 00:01:52 +02001031void ieee802_11_parse_elems(u8 *start, size_t len,
1032 struct ieee802_11_elems *elems);
Johannes Bergd91f36d2009-04-16 13:17:26 +02001033u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1034 struct ieee802_11_elems *elems,
1035 u64 filter, u32 crc);
Johannes Berg881d9482009-01-21 15:13:48 +01001036u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
Johannes Berg96dd22a2008-09-11 00:01:57 +02001037 enum ieee80211_band band);
Jiri Bencf0706e82007-05-05 11:45:53 -07001038
Kalle Valo520eb822008-12-18 23:35:27 +02001039void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1040void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1041void ieee80211_dynamic_ps_timer(unsigned long data);
Vivek Natarajana97b77b2008-12-23 18:39:02 -08001042void ieee80211_send_nullfunc(struct ieee80211_local *local,
1043 struct ieee80211_sub_if_data *sdata,
1044 int powersave);
Kalle Valo3cf335d2009-03-22 21:57:06 +02001045void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1046 struct ieee80211_hdr *hdr);
Kalle Valo04de8382009-03-22 21:57:35 +02001047void ieee80211_beacon_loss_work(struct work_struct *work);
Kalle Valo520eb822008-12-18 23:35:27 +02001048
Kalle Valoce7c9112008-12-18 23:35:20 +02001049void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1050 enum queue_stop_reason reason);
1051void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1052 enum queue_stop_reason reason);
Johannes Berg96f5e662009-02-12 00:51:53 +01001053void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1054 enum queue_stop_reason reason);
1055void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1056 enum queue_stop_reason reason);
Johannes Berg8f77f382009-06-07 21:58:37 +02001057void ieee80211_add_pending_skb(struct ieee80211_local *local,
1058 struct sk_buff *skb);
1059int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1060 struct sk_buff_head *skbs);
Kalle Valoce7c9112008-12-18 23:35:20 +02001061
Johannes Berg46900292009-02-15 12:44:28 +01001062void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1063 u16 transaction, u16 auth_alg,
Johannes Bergfffd0932009-07-08 14:22:54 +02001064 u8 *extra, size_t extra_len, const u8 *bssid,
1065 const u8 *key, u8 key_len, u8 key_idx);
Johannes Bergde95a542009-04-01 11:58:36 +02001066int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
Johannes Berg4d36ec582009-10-27 20:59:55 +01001067 const u8 *ie, size_t ie_len,
1068 enum ieee80211_band band);
Johannes Berg46900292009-02-15 12:44:28 +01001069void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
Johannes Bergde95a542009-04-01 11:58:36 +02001070 const u8 *ssid, size_t ssid_len,
1071 const u8 *ie, size_t ie_len);
Johannes Berg46900292009-02-15 12:44:28 +01001072
1073void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1074 const size_t supp_rates_len,
1075 const u8 *supp_rates);
1076u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1077 struct ieee802_11_elems *elems,
1078 enum ieee80211_band band);
1079
Johannes Bergf4ea83d2008-06-30 15:10:46 +02001080#ifdef CONFIG_MAC80211_NOINLINE
Johannes Bergd9e8a702008-06-30 15:10:44 +02001081#define debug_noinline noinline
1082#else
1083#define debug_noinline
1084#endif
1085
Jiri Bencf0706e82007-05-05 11:45:53 -07001086#endif /* IEEE80211_I_H */