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Jiri Bencf0706e82007-05-05 11:45:53 -07001/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
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. Miller51cb6db2008-07-15 03:34:57 -070027#include <net/mac80211.h>
Johannes Berg2c8dccc2008-04-08 15:14:40 -040028#include "key.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070029#include "sta_info.h"
30
Johannes Berg9cfb0002008-04-03 15:17:31 +020031struct ieee80211_local;
Jiri Bencf0706e82007-05-05 11:45:53 -070032
33/* Maximum number of broadcast/multicast frames to buffer when some of the
34 * associated stations are using power saving. */
35#define AP_MAX_BC_BUFFER 128
36
37/* Maximum number of frames buffered to all STAs, including multicast frames.
38 * Note: increasing this limit increases the potential memory requirement. Each
39 * frame can be up to about 2 kB long. */
40#define TOTAL_MAX_TX_BUFFER 512
41
42/* Required encryption head and tailroom */
43#define IEEE80211_ENCRYPT_HEADROOM 8
Jouni Malinen765cb462009-01-08 13:32:01 +020044#define IEEE80211_ENCRYPT_TAILROOM 18
Jiri Bencf0706e82007-05-05 11:45:53 -070045
46/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
47 * reception of at least three fragmented frames. This limit can be increased
48 * by changing this define, at the cost of slower frame reassembly and
49 * increased memory use (about 2 kB of RAM per entry). */
50#define IEEE80211_FRAGMENT_MAX 4
51
Johannes Berg0a51b272008-09-08 17:44:25 +020052/*
53 * Time after which we ignore scan results and no longer report/use
54 * them in any way.
55 */
56#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
57
Johannes Berg20ad19d2009-02-10 21:25:45 +010058#define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
59
Jiri Bencf0706e82007-05-05 11:45:53 -070060struct ieee80211_fragment_entry {
61 unsigned long first_frag_time;
62 unsigned int seq;
63 unsigned int rx_queue;
64 unsigned int last_frag;
65 unsigned int extra_len;
66 struct sk_buff_head skb_list;
67 int ccmp; /* Whether fragments were encrypted with CCMP */
68 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
69};
70
71
Johannes Bergc2b13452008-09-11 00:01:55 +020072struct ieee80211_bss {
Johannes Berg00d3f142009-02-10 21:26:00 +010073 /* Yes, this is a hack */
74 struct cfg80211_bss cbss;
75
76 /* don't want to look up all the time */
Johannes Berg056cdd52008-03-26 23:21:47 +010077 size_t ssid_len;
Jiri Bencf0706e82007-05-05 11:45:53 -070078 u8 ssid[IEEE80211_MAX_SSID_LEN];
Johannes Berg00d3f142009-02-10 21:26:00 +010079
Emmanuel Grumbach98f7dfd2008-07-18 13:52:59 +080080 u8 dtim_period;
Johannes Berg00d3f142009-02-10 21:26:00 +010081
Jouni Malinen43ac2ca2008-08-15 22:21:27 +030082 bool wmm_used;
Johannes Berg00d3f142009-02-10 21:26:00 +010083
84 unsigned long last_probe_resp;
85
Luis Carlos Coboee385852008-02-23 15:17:11 +010086#ifdef CONFIG_MAC80211_MESH
87 u8 *mesh_id;
88 size_t mesh_id_len;
John W. Linville24736702008-04-08 14:15:46 -040089 u8 *mesh_cfg;
Johannes Berg902acc72008-02-23 15:17:19 +010090#endif
Johannes Berg00d3f142009-02-10 21:26:00 +010091
Jiri Bencf0706e82007-05-05 11:45:53 -070092#define IEEE80211_MAX_SUPP_RATES 32
93 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
94 size_t supp_rates_len;
Jiri Bencf0706e82007-05-05 11:45:53 -070095
Johannes Berg00d3f142009-02-10 21:26:00 +010096 /*
97 * During assocation, we save an ERP value from a probe response so
Daniel Drake56282212007-07-10 19:32:10 +020098 * that we can feed ERP info to the driver when handling the
99 * association completes. these fields probably won't be up-to-date
Johannes Berg00d3f142009-02-10 21:26:00 +0100100 * otherwise, you probably don't want to use them.
101 */
102 bool has_erp_value;
Daniel Drake56282212007-07-10 19:32:10 +0200103 u8 erp_value;
Jiri Bencf0706e82007-05-05 11:45:53 -0700104};
105
Johannes Bergc2b13452008-09-11 00:01:55 +0200106static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100107{
108#ifdef CONFIG_MAC80211_MESH
109 return bss->mesh_cfg;
110#endif
111 return NULL;
112}
113
Johannes Bergc2b13452008-09-11 00:01:55 +0200114static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100115{
116#ifdef CONFIG_MAC80211_MESH
117 return bss->mesh_id;
118#endif
119 return NULL;
120}
121
Johannes Bergc2b13452008-09-11 00:01:55 +0200122static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100123{
124#ifdef CONFIG_MAC80211_MESH
125 return bss->mesh_id_len;
126#endif
127 return 0;
128}
129
Jiri Bencf0706e82007-05-05 11:45:53 -0700130
Johannes Berg9ae54c82008-01-31 19:48:20 +0100131typedef unsigned __bitwise__ ieee80211_tx_result;
132#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
133#define TX_DROP ((__force ieee80211_tx_result) 1u)
134#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
135
Johannes Berg5cf121c2008-02-25 16:27:43 +0100136#define IEEE80211_TX_FRAGMENTED BIT(0)
137#define IEEE80211_TX_UNICAST BIT(1)
138#define IEEE80211_TX_PS_BUFFERED BIT(2)
Johannes Berg9ae54c82008-01-31 19:48:20 +0100139
Johannes Berg5cf121c2008-02-25 16:27:43 +0100140struct ieee80211_tx_data {
Jiri Bencf0706e82007-05-05 11:45:53 -0700141 struct sk_buff *skb;
142 struct net_device *dev;
143 struct ieee80211_local *local;
144 struct ieee80211_sub_if_data *sdata;
145 struct sta_info *sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700146 struct ieee80211_key *key;
Jiri Bencf0706e82007-05-05 11:45:53 -0700147
Johannes Berg5cf121c2008-02-25 16:27:43 +0100148 struct ieee80211_channel *channel;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100149
Harvey Harrisona4b7d7b2008-07-15 18:44:14 -0700150 u16 ethertype;
Johannes Berg056cdd52008-03-26 23:21:47 +0100151 unsigned int flags;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100152};
153
154
155typedef unsigned __bitwise__ ieee80211_rx_result;
156#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
157#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
158#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
159#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
160
161#define IEEE80211_RX_IN_SCAN BIT(0)
162/* frame is destined to interface currently processed (incl. multicast frames) */
163#define IEEE80211_RX_RA_MATCH BIT(1)
164#define IEEE80211_RX_AMSDU BIT(2)
165#define IEEE80211_RX_CMNTR_REPORTED BIT(3)
166#define IEEE80211_RX_FRAGMENTED BIT(4)
167
168struct ieee80211_rx_data {
169 struct sk_buff *skb;
170 struct net_device *dev;
171 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 Berg5cf121c2008-02-25 16:27:43 +0100175 struct ieee80211_rx_status *status;
176 struct ieee80211_rate *rate;
Johannes Berg056cdd52008-03-26 23:21:47 +0100177
Johannes Berg056cdd52008-03-26 23:21:47 +0100178 unsigned int flags;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100179 int queue;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100180 u32 tkip_iv32;
181 u16 tkip_iv16;
Jiri Bencf0706e82007-05-05 11:45:53 -0700182};
183
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100184struct beacon_data {
185 u8 *head, *tail;
186 int head_len, tail_len;
187 int dtim_period;
188};
189
Jiri Bencf0706e82007-05-05 11:45:53 -0700190struct ieee80211_if_ap {
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100191 struct beacon_data *beacon;
Jiri Bencf0706e82007-05-05 11:45:53 -0700192
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400193 struct list_head vlans;
194
Jiri Bencf0706e82007-05-05 11:45:53 -0700195 /* yes, this looks ugly, but guarantees that we can later use
196 * bitmap_empty :)
Johannes Berg004c8722008-02-20 11:21:35 +0100197 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
Jiri Bencf0706e82007-05-05 11:45:53 -0700198 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
Jiri Bencf0706e82007-05-05 11:45:53 -0700199 struct sk_buff_head ps_bc_buf;
Johannes Berg056cdd52008-03-26 23:21:47 +0100200 atomic_t num_sta_ps; /* number of stations in PS mode */
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100201 int dtim_count;
Jiri Bencf0706e82007-05-05 11:45:53 -0700202};
203
204struct ieee80211_if_wds {
Jiri Bencf0706e82007-05-05 11:45:53 -0700205 struct sta_info *sta;
Johannes Berg056cdd52008-03-26 23:21:47 +0100206 u8 remote_addr[ETH_ALEN];
Jiri Bencf0706e82007-05-05 11:45:53 -0700207};
208
209struct ieee80211_if_vlan {
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400210 struct list_head list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700211};
212
Luis Carlos Coboee385852008-02-23 15:17:11 +0100213struct mesh_stats {
Daniel Walkerc8a61a72009-08-18 10:59:00 -0700214 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
215 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
216 __u32 fwded_frames; /* Mesh total forwarded frames */
Luis Carlos Coboee385852008-02-23 15:17:11 +0100217 __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;
Maxim Levitskya43abf22009-07-31 18:54:12 +0300284 int probe_send_count;
Johannes Bergb291ba12009-07-10 15:29:03 +0200285
Johannes Berg77fdaa12009-07-07 03:45:17 +0200286 struct mutex mtx;
287 struct ieee80211_bss *associated;
Johannes Berge21546a2009-08-06 20:41:32 +0200288 struct ieee80211_mgd_work *old_associate_work;
Johannes Berg77fdaa12009-07-07 03:45:17 +0200289 struct list_head work_list;
Johannes Berg46900292009-02-15 12:44:28 +0100290
Johannes Berg77fdaa12009-07-07 03:45:17 +0200291 u8 bssid[ETH_ALEN];
Johannes Berg46900292009-02-15 12:44:28 +0100292
Jiri Bencf0706e82007-05-05 11:45:53 -0700293 u16 aid;
Johannes Berga7c1cfc2009-07-07 03:45:16 +0200294 u16 capab;
Jiri Bencf0706e82007-05-05 11:45:53 -0700295
Johannes Berg056cdd52008-03-26 23:21:47 +0100296 struct sk_buff_head skb_queue;
297
Johannes Berg5bb644a2009-05-17 11:40:42 +0200298 unsigned long timers_running; /* used for quiesce/restart */
Johannes Berg965beda2009-04-16 13:17:24 +0200299 bool powersave; /* powersave requested for this iface */
300
Johannes Berg056cdd52008-03-26 23:21:47 +0100301 unsigned long request;
302
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400303 unsigned int flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700304
Johannes Bergd91f36d2009-04-16 13:17:26 +0200305 u32 beacon_crc;
306
Jouni Malinenfdfacf02009-01-08 13:32:05 +0200307 enum {
308 IEEE80211_MFP_DISABLED,
309 IEEE80211_MFP_OPTIONAL,
310 IEEE80211_MFP_REQUIRED
311 } mfp; /* management frame protection */
312
Jiri Bencf0706e82007-05-05 11:45:53 -0700313 int wmm_last_param_set;
314};
315
Johannes Berg46900292009-02-15 12:44:28 +0100316enum ieee80211_ibss_request {
317 IEEE80211_IBSS_REQ_RUN = 0,
318};
319
320struct ieee80211_if_ibss {
321 struct timer_list timer;
322 struct work_struct work;
323
324 struct sk_buff_head skb_queue;
325
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200326 unsigned long request;
327 unsigned long last_scan_completed;
Johannes Berg5bb644a2009-05-17 11:40:42 +0200328
329 bool timer_running;
330
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200331 bool fixed_bssid;
332 bool fixed_channel;
Johannes Bergfffd0932009-07-08 14:22:54 +0200333 bool privacy;
Johannes Berg46900292009-02-15 12:44:28 +0100334
335 u8 bssid[ETH_ALEN];
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200336 u8 ssid[IEEE80211_MAX_SSID_LEN];
337 u8 ssid_len, ie_len;
338 u8 *ie;
339 struct ieee80211_channel *channel;
Johannes Berg46900292009-02-15 12:44:28 +0100340
341 unsigned long ibss_join_req;
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200342 /* probe response/beacon for IBSS */
343 struct sk_buff *presp, *skb;
Johannes Berg46900292009-02-15 12:44:28 +0100344
345 enum {
346 IEEE80211_IBSS_MLME_SEARCH,
347 IEEE80211_IBSS_MLME_JOINED,
348 } state;
349};
350
Johannes Berg472dbc42008-09-11 00:01:49 +0200351struct ieee80211_if_mesh {
352 struct work_struct work;
353 struct timer_list housekeeping_timer;
354 struct timer_list mesh_path_timer;
355 struct sk_buff_head skb_queue;
356
Johannes Berg5bb644a2009-05-17 11:40:42 +0200357 unsigned long timers_running;
358
Javier Cardona18889232009-08-10 12:15:52 -0700359 unsigned long wrkq_flags;
Johannes Berg472dbc42008-09-11 00:01:49 +0200360
361 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
362 size_t mesh_id_len;
363 /* Active Path Selection Protocol Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000364 u8 mesh_pp_id;
Johannes Berg472dbc42008-09-11 00:01:49 +0200365 /* Active Path Selection Metric Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000366 u8 mesh_pm_id;
Johannes Berg472dbc42008-09-11 00:01:49 +0200367 /* Congestion Control Mode Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000368 u8 mesh_cc_id;
Javier Cardona9e03fdf2009-08-20 09:21:45 -0700369 /* Synchronization Protocol Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000370 u8 mesh_sp_id;
Javier Cardona9e03fdf2009-08-20 09:21:45 -0700371 /* Authentication Protocol Identifier */
Rui Paulo34917072009-11-09 23:46:39 +0000372 u8 mesh_auth_id;
Johannes Berg472dbc42008-09-11 00:01:49 +0200373 /* Local mesh Destination Sequence Number */
374 u32 dsn;
375 /* Last used PREQ ID */
376 u32 preq_id;
377 atomic_t mpaths;
378 /* Timestamp of last DSN update */
379 unsigned long last_dsn_update;
380 /* Timestamp of last DSN sent */
381 unsigned long last_preq;
382 struct mesh_rmc *rmc;
383 spinlock_t mesh_preq_queue_lock;
384 struct mesh_preq_queue preq_queue;
385 int preq_queue_len;
386 struct mesh_stats mshstats;
387 struct mesh_config mshcfg;
388 u32 mesh_seqnum;
389 bool accepting_plinks;
Johannes Berg472dbc42008-09-11 00:01:49 +0200390};
Johannes Berg902acc72008-02-23 15:17:19 +0100391
392#ifdef CONFIG_MAC80211_MESH
Johannes Berg472dbc42008-09-11 00:01:49 +0200393#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
394 do { (msh)->mshstats.name++; } while (0)
Johannes Berg902acc72008-02-23 15:17:19 +0100395#else
Johannes Berg472dbc42008-09-11 00:01:49 +0200396#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
Johannes Berg902acc72008-02-23 15:17:19 +0100397 do { } while (0)
398#endif
Jiri Bencf0706e82007-05-05 11:45:53 -0700399
Johannes Berg213cd112008-09-11 00:01:54 +0200400/**
401 * enum ieee80211_sub_if_data_flags - virtual interface flags
402 *
403 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
404 * @IEEE80211_SDATA_PROMISC: interface is promisc
Johannes Berg213cd112008-09-11 00:01:54 +0200405 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
406 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
407 * associated stations and deliver multicast frames both
408 * back to wireless media and to the local net stack.
409 */
410enum ieee80211_sub_if_data_flags {
411 IEEE80211_SDATA_ALLMULTI = BIT(0),
412 IEEE80211_SDATA_PROMISC = BIT(1),
Johannes Berg7986cf92009-03-21 17:08:43 +0100413 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
414 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
Johannes Berg213cd112008-09-11 00:01:54 +0200415};
416
Jiri Bencf0706e82007-05-05 11:45:53 -0700417struct ieee80211_sub_if_data {
418 struct list_head list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700419
420 struct wireless_dev wdev;
421
Johannes Berg11a843b2007-08-28 17:01:55 -0400422 /* keys */
423 struct list_head key_list;
424
Jiri Bencf0706e82007-05-05 11:45:53 -0700425 struct net_device *dev;
426 struct ieee80211_local *local;
427
Jiri Slaby13262ff2007-08-28 17:01:54 -0400428 unsigned int flags;
Daniel Drake7e9ed182007-07-27 15:43:24 +0200429
Jiri Bencf0706e82007-05-05 11:45:53 -0700430 int drop_unencrypted;
Jiri Bencf0706e82007-05-05 11:45:53 -0700431
Johannes Berg413ad502009-05-08 21:21:06 +0200432 /*
433 * keep track of whether the HT opmode (stored in
434 * vif.bss_info.ht_operation_mode) is valid.
435 */
436 bool ht_opmode_valid;
437
Jiri Bencf0706e82007-05-05 11:45:53 -0700438 /* Fragment table for host-based reassembly */
439 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
440 unsigned int fragment_next;
441
442#define NUM_DEFAULT_KEYS 4
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200443#define NUM_DEFAULT_MGMT_KEYS 2
444 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
Jiri Bencf0706e82007-05-05 11:45:53 -0700445 struct ieee80211_key *default_key;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200446 struct ieee80211_key *default_mgmt_key;
Jiri Bencf0706e82007-05-05 11:45:53 -0700447
Johannes Berg94778282008-10-10 13:21:59 +0200448 u16 sequence_number;
449
Johannes Berg3e122be2008-07-09 14:40:34 +0200450 /*
451 * AP this belongs to: self in AP mode and
452 * corresponding AP in VLAN mode, NULL for
453 * all others (might be needed later in IBSS)
454 */
455 struct ieee80211_if_ap *bss;
456
457 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
458 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
Jiri Bencf0706e82007-05-05 11:45:53 -0700459
460 union {
461 struct ieee80211_if_ap ap;
462 struct ieee80211_if_wds wds;
463 struct ieee80211_if_vlan vlan;
Johannes Berg46900292009-02-15 12:44:28 +0100464 struct ieee80211_if_managed mgd;
465 struct ieee80211_if_ibss ibss;
Johannes Berg472dbc42008-09-11 00:01:49 +0200466#ifdef CONFIG_MAC80211_MESH
467 struct ieee80211_if_mesh mesh;
468#endif
Michael Wu8cc9a732008-01-31 19:48:23 +0100469 u32 mntr_flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700470 } u;
Jiri Bence9f207f2007-05-05 11:46:38 -0700471
472#ifdef CONFIG_MAC80211_DEBUGFS
Jouni Malinen2b58b202008-08-28 15:12:06 +0300473 struct {
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100474 struct dentry *dir;
Jouni Malinen2b58b202008-08-28 15:12:06 +0300475 struct dentry *default_key;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200476 struct dentry *default_mgmt_key;
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100477 } debugfs;
Jiri Bence9f207f2007-05-05 11:46:38 -0700478#endif
Johannes Berg32bfd352007-12-19 01:31:26 +0100479 /* must be last, dynamically sized area in this! */
480 struct ieee80211_vif vif;
Jiri Bencf0706e82007-05-05 11:45:53 -0700481};
482
Johannes Berg32bfd352007-12-19 01:31:26 +0100483static inline
484struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
485{
486 return container_of(p, struct ieee80211_sub_if_data, vif);
487}
488
Johannes Berg472dbc42008-09-11 00:01:49 +0200489static inline void
490ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
491 u8 mesh_id_len, u8 *mesh_id)
492{
493#ifdef CONFIG_MAC80211_MESH
494 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
495 ifmsh->mesh_id_len = mesh_id_len;
496 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
497#else
498 WARN_ON(1);
499#endif
500}
501
Jiri Bencf0706e82007-05-05 11:45:53 -0700502enum {
503 IEEE80211_RX_MSG = 1,
504 IEEE80211_TX_STATUS_MSG = 2,
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +0200505 IEEE80211_DELBA_MSG = 3,
506 IEEE80211_ADDBA_MSG = 4,
Jiri Bencf0706e82007-05-05 11:45:53 -0700507};
508
Kalle Valoce7c9112008-12-18 23:35:20 +0200509enum queue_stop_reason {
510 IEEE80211_QUEUE_STOP_REASON_DRIVER,
Kalle Valo520eb822008-12-18 23:35:27 +0200511 IEEE80211_QUEUE_STOP_REASON_PS,
Johannes Berg96f5e662009-02-12 00:51:53 +0100512 IEEE80211_QUEUE_STOP_REASON_CSA,
513 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
Johannes Berg25420602009-03-13 11:43:36 +0100514 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
Johannes Berg8f77f382009-06-07 21:58:37 +0200515 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
Kalle Valoce7c9112008-12-18 23:35:20 +0200516};
517
Helmut Schaa142b9f52009-07-23 13:18:01 +0200518/**
519 * mac80211 scan flags - currently active scan mode
520 *
521 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
522 * well be on the operating channel
523 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
524 * determine if we are on the operating channel or not
525 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
526 * gets only set in conjunction with SCAN_SW_SCANNING
527 */
Helmut Schaafbe9c422009-07-23 12:14:04 +0200528enum {
529 SCAN_SW_SCANNING,
Helmut Schaa142b9f52009-07-23 13:18:01 +0200530 SCAN_HW_SCANNING,
531 SCAN_OFF_CHANNEL,
532};
533
534/**
535 * enum mac80211_scan_state - scan state machine states
536 *
537 * @SCAN_DECISION: Main entry point to the scan state machine, this state
538 * determines if we should keep on scanning or switch back to the
539 * operating channel
540 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
541 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
542 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
543 * about us leaving the channel and stop all associated STA interfaces
544 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
545 * AP about us being back and restart all associated STA interfaces
546 */
547enum mac80211_scan_state {
548 SCAN_DECISION,
549 SCAN_SET_CHANNEL,
550 SCAN_SEND_PROBE,
551 SCAN_LEAVE_OPER_CHANNEL,
552 SCAN_ENTER_OPER_CHANNEL,
Helmut Schaafbe9c422009-07-23 12:14:04 +0200553};
554
Jiri Bencf0706e82007-05-05 11:45:53 -0700555struct ieee80211_local {
556 /* embed the driver visible part.
557 * don't cast (use the static inlines below), but we keep
558 * it first anyway so they become a no-op */
559 struct ieee80211_hw hw;
560
561 const struct ieee80211_ops *ops;
562
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400563 /*
564 * private workqueue to mac80211. mac80211 makes this accessible
565 * via ieee80211_queue_work()
566 */
567 struct workqueue_struct *workqueue;
568
Johannes Berge4e72fb2009-03-23 17:28:42 +0100569 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
Johannes Berg96f5e662009-02-12 00:51:53 +0100570 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
Kalle Valoce7c9112008-12-18 23:35:20 +0200571 spinlock_t queue_stop_reason_lock;
Johannes Berg96f5e662009-02-12 00:51:53 +0100572
Jiri Bencf0706e82007-05-05 11:45:53 -0700573 int open_count;
Michael Wu3d30d942008-01-31 19:48:27 +0100574 int monitors, cooked_mntrs;
Michael Wu8cc9a732008-01-31 19:48:23 +0100575 /* number of interfaces with corresponding FIF_ flags */
Igor Perminove3b90ca2009-08-04 16:48:51 +0400576 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll;
Johannes Berg4150c572007-09-17 01:29:23 -0400577 unsigned int filter_flags; /* FIF_* */
Jiri Bencf0706e82007-05-05 11:45:53 -0700578 struct iw_statistics wstats;
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200579
580 /* protects the aggregated multicast list and filter calls */
581 spinlock_t filter_lock;
582
Johannes Berg3ac64be2009-08-17 16:16:53 +0200583 /* used for uploading changed mc list */
584 struct work_struct reconfig_filter;
585
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200586 /* aggregated multicast list */
587 struct dev_addr_list *mc_list;
588 int mc_count;
589
Johannes Bergd0709a62008-02-25 16:27:46 +0100590 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
Johannes Berg5bb644a2009-05-17 11:40:42 +0200591
592 /*
593 * suspended is true if we finished all the suspend _and_ we have
594 * not yet come up from resume. This is to be used by mac80211
595 * to ensure driver sanity during suspend and mac80211's own
596 * sanity. It can eventually be used for WoW as well.
597 */
598 bool suspended;
599
600 /*
601 * quiescing is true during the suspend process _only_ to
602 * ease timer cancelling etc.
603 */
604 bool quiescing;
605
Johannes Bergea77f122009-08-21 14:44:45 +0200606 /* device is started */
607 bool started;
608
Johannes Bergb306f452007-07-10 19:32:08 +0200609 int tx_headroom; /* required headroom for hardware/radiotap */
Jiri Bencf0706e82007-05-05 11:45:53 -0700610
Jiri Bencf0706e82007-05-05 11:45:53 -0700611 /* Tasklet and skb queue to process calls from IRQ mode. All frames
612 * added to skb_queue will be processed, but frames in
613 * skb_queue_unreliable may be dropped if the total length of these
614 * queues increases over the limit. */
615#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
616 struct tasklet_struct tasklet;
617 struct sk_buff_head skb_queue;
618 struct sk_buff_head skb_queue_unreliable;
619
Johannes Bergd0709a62008-02-25 16:27:46 +0100620 /* Station data */
621 /*
622 * The lock only protects the list, hash, timer and counter
623 * against manipulation, reads are done in RCU. Additionally,
Johannes Bergb16bd152008-04-11 21:40:35 +0200624 * the lock protects each BSS's TIM bitmap.
Johannes Bergd0709a62008-02-25 16:27:46 +0100625 */
626 spinlock_t sta_lock;
627 unsigned long num_sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700628 struct list_head sta_list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700629 struct sta_info *sta_hash[STA_HASH_SIZE];
630 struct timer_list sta_cleanup;
Johannes Bergf5ea9122009-08-07 16:17:38 +0200631 int sta_generation;
Jiri Bencf0706e82007-05-05 11:45:53 -0700632
Johannes Berg2a577d92009-03-23 17:28:37 +0100633 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
Jiri Bencf0706e82007-05-05 11:45:53 -0700634 struct tasklet_struct tx_pending_tasklet;
635
Johannes Bergcd8ffc82009-03-23 17:28:41 +0100636 /*
637 * This lock is used to prevent concurrent A-MPDU
638 * session start/stop processing, this thus also
639 * synchronises the ->ampdu_action() callback to
640 * drivers and limits it to one at a time.
641 */
642 spinlock_t ampdu_lock;
643
Johannes Berg53918992007-09-26 15:19:47 +0200644 /* number of interfaces with corresponding IFF_ flags */
645 atomic_t iff_allmultis, iff_promiscs;
Jiri Bencf0706e82007-05-05 11:45:53 -0700646
647 struct rate_control_ref *rate_ctrl;
648
Jiri Bencf0706e82007-05-05 11:45:53 -0700649 struct crypto_blkcipher *wep_tx_tfm;
650 struct crypto_blkcipher *wep_rx_tfm;
651 u32 wep_iv;
Jiri Bencf0706e82007-05-05 11:45:53 -0700652
Johannes Bergc771c9d2009-01-23 22:54:03 +0100653 /* see iface.c */
Johannes Berg79010422007-09-18 17:29:21 -0400654 struct list_head interfaces;
Johannes Bergc771c9d2009-01-23 22:54:03 +0100655 struct mutex iflist_mtx;
Johannes Berg79010422007-09-18 17:29:21 -0400656
Johannes Bergb16bd152008-04-11 21:40:35 +0200657 /*
658 * Key lock, protects sdata's key_list and sta_info's
659 * key pointers (write access, they're RCU.)
660 */
661 spinlock_t key_lock;
662
663
Johannes Bergc2b13452008-09-11 00:01:55 +0200664 /* Scanning and BSS list */
Johannes Bergf3b85252009-04-23 16:01:47 +0200665 struct mutex scan_mtx;
Helmut Schaafbe9c422009-07-23 12:14:04 +0200666 unsigned long scanning;
Johannes Berg2a519312009-02-10 21:25:55 +0100667 struct cfg80211_ssid scan_ssid;
Johannes Berg5ba63532009-08-07 17:54:07 +0200668 struct cfg80211_scan_request *int_scan_req;
Johannes Berg4d36ec582009-10-27 20:59:55 +0100669 struct cfg80211_scan_request *scan_req, *hw_scan_req;
Johannes Berg2a519312009-02-10 21:25:55 +0100670 struct ieee80211_channel *scan_channel;
Johannes Berg4d36ec582009-10-27 20:59:55 +0100671 enum ieee80211_band hw_scan_band;
Jiri Bencf0706e82007-05-05 11:45:53 -0700672 int scan_channel_idx;
Johannes Bergde95a542009-04-01 11:58:36 +0200673 int scan_ies_len;
Johannes Berg8318d782008-01-24 19:38:38 +0100674
Helmut Schaa977923b2009-07-23 12:14:20 +0200675 enum mac80211_scan_state next_scan_state;
Jiri Bencf0706e82007-05-05 11:45:53 -0700676 struct delayed_work scan_work;
Johannes Berg491775a2008-09-08 17:44:23 +0200677 struct ieee80211_sub_if_data *scan_sdata;
Sujith094d05d2008-12-12 11:57:43 +0530678 enum nl80211_channel_type oper_channel_type;
Johannes Berg2a519312009-02-10 21:25:55 +0100679 struct ieee80211_channel *oper_channel, *csa_channel;
Jiri Bencf0706e82007-05-05 11:45:53 -0700680
681 /* SNMP counters */
682 /* dot11CountersTable */
683 u32 dot11TransmittedFragmentCount;
684 u32 dot11MulticastTransmittedFrameCount;
685 u32 dot11FailedCount;
686 u32 dot11RetryCount;
687 u32 dot11MultipleRetryCount;
688 u32 dot11FrameDuplicateCount;
689 u32 dot11ReceivedFragmentCount;
690 u32 dot11MulticastReceivedFrameCount;
691 u32 dot11TransmittedFrameCount;
Jiri Bencf0706e82007-05-05 11:45:53 -0700692
693#ifdef CONFIG_MAC80211_LEDS
694 int tx_led_counter, rx_led_counter;
Ivo van Doorncdcb0062008-01-07 19:45:24 +0100695 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
696 char tx_led_name[32], rx_led_name[32],
697 assoc_led_name[32], radio_led_name[32];
Jiri Bencf0706e82007-05-05 11:45:53 -0700698#endif
699
Jiri Bence9f207f2007-05-05 11:46:38 -0700700#ifdef CONFIG_MAC80211_DEBUGFS
701 struct work_struct sta_debugfs_add;
702#endif
703
Jiri Bencf0706e82007-05-05 11:45:53 -0700704#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
705 /* TX/RX handler statistics */
706 unsigned int tx_handlers_drop;
707 unsigned int tx_handlers_queued;
708 unsigned int tx_handlers_drop_unencrypted;
709 unsigned int tx_handlers_drop_fragment;
710 unsigned int tx_handlers_drop_wep;
711 unsigned int tx_handlers_drop_not_assoc;
712 unsigned int tx_handlers_drop_unauth_port;
713 unsigned int rx_handlers_drop;
714 unsigned int rx_handlers_queued;
715 unsigned int rx_handlers_drop_nullfunc;
716 unsigned int rx_handlers_drop_defrag;
717 unsigned int rx_handlers_drop_short;
718 unsigned int rx_handlers_drop_passive_scan;
719 unsigned int tx_expand_skb_head;
720 unsigned int tx_expand_skb_head_cloned;
721 unsigned int rx_expand_skb_head;
722 unsigned int rx_expand_skb_head2;
723 unsigned int rx_handlers_fragments;
724 unsigned int tx_status_drop;
Jiri Bencf0706e82007-05-05 11:45:53 -0700725#define I802_DEBUG_INC(c) (c)++
726#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
727#define I802_DEBUG_INC(c) do { } while (0)
728#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
729
730
Jiri Bencf0706e82007-05-05 11:45:53 -0700731 int total_ps_buffered; /* total number of all buffered unicast and
732 * multicast packets for power saving stations
733 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700734 int wifi_wme_noack_test;
735 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
Kalle Valo520eb822008-12-18 23:35:27 +0200736
Kalle Valo572e0012009-02-10 17:09:31 +0200737 bool pspolling;
Johannes Berg965beda2009-04-16 13:17:24 +0200738 /*
739 * PS can only be enabled when we have exactly one managed
740 * interface (and monitors) in PS, this then points there.
741 */
742 struct ieee80211_sub_if_data *ps_sdata;
Kalle Valo520eb822008-12-18 23:35:27 +0200743 struct work_struct dynamic_ps_enable_work;
744 struct work_struct dynamic_ps_disable_work;
745 struct timer_list dynamic_ps_timer;
Johannes Berg10f644a2009-04-16 13:17:25 +0200746 struct notifier_block network_latency_notifier;
Jiri Bencf0706e82007-05-05 11:45:53 -0700747
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100748 int user_power_level; /* in dBm */
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530749 int power_constr_level; /* in dBm */
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100750
Johannes Bergf2753dd2009-04-14 10:09:24 +0200751 struct work_struct restart_work;
752
Jiri Bence9f207f2007-05-05 11:46:38 -0700753#ifdef CONFIG_MAC80211_DEBUGFS
754 struct local_debugfsdentries {
Johannes Berg4b7679a2008-09-18 18:14:18 +0200755 struct dentry *rcdir;
Jiri Bence9f207f2007-05-05 11:46:38 -0700756 struct dentry *stations;
757 struct dentry *keys;
758 } debugfs;
759#endif
Jiri Bencf0706e82007-05-05 11:45:53 -0700760};
761
Johannes Berg3e122be2008-07-09 14:40:34 +0200762static inline struct ieee80211_sub_if_data *
763IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
764{
Johannes Berg3e122be2008-07-09 14:40:34 +0200765 return netdev_priv(dev);
766}
767
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +0200768/* this struct represents 802.11n's RA/TID combination */
769struct ieee80211_ra_tid {
770 u8 ra[ETH_ALEN];
771 u16 tid;
772};
773
Luis Carlos Coboee385852008-02-23 15:17:11 +0100774/* Parsed Information Elements */
775struct ieee802_11_elems {
Jouni Malinen43ac2ca2008-08-15 22:21:27 +0300776 u8 *ie_start;
777 size_t total_len;
778
Luis Carlos Coboee385852008-02-23 15:17:11 +0100779 /* pointers to IEs */
780 u8 *ssid;
781 u8 *supp_rates;
782 u8 *fh_params;
783 u8 *ds_params;
784 u8 *cf_params;
Johannes Berge7ec86f2009-04-18 17:33:24 +0200785 struct ieee80211_tim_ie *tim;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100786 u8 *ibss_params;
787 u8 *challenge;
788 u8 *wpa;
789 u8 *rsn;
790 u8 *erp_info;
791 u8 *ext_supp_rates;
792 u8 *wmm_info;
793 u8 *wmm_param;
Johannes Berg09914812008-10-07 19:31:17 +0200794 struct ieee80211_ht_cap *ht_cap_elem;
Johannes Bergd9fe60d2008-10-09 12:13:49 +0200795 struct ieee80211_ht_info *ht_info_elem;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100796 u8 *mesh_config;
797 u8 *mesh_id;
798 u8 *peer_link;
799 u8 *preq;
800 u8 *prep;
801 u8 *perr;
Assaf Kraussf2df3852008-06-15 18:23:29 +0300802 u8 *ch_switch_elem;
803 u8 *country_elem;
804 u8 *pwr_constr_elem;
805 u8 *quiet_elem; /* first quite element */
Jouni Malinenf797eb72009-01-19 18:48:46 +0200806 u8 *timeout_int;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100807
808 /* length of them, respectively */
809 u8 ssid_len;
810 u8 supp_rates_len;
811 u8 fh_params_len;
812 u8 ds_params_len;
813 u8 cf_params_len;
814 u8 tim_len;
815 u8 ibss_params_len;
816 u8 challenge_len;
817 u8 wpa_len;
818 u8 rsn_len;
819 u8 erp_info_len;
820 u8 ext_supp_rates_len;
821 u8 wmm_info_len;
822 u8 wmm_param_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100823 u8 mesh_config_len;
824 u8 mesh_id_len;
825 u8 peer_link_len;
826 u8 preq_len;
827 u8 prep_len;
828 u8 perr_len;
Assaf Kraussf2df3852008-06-15 18:23:29 +0300829 u8 ch_switch_elem_len;
830 u8 country_elem_len;
831 u8 pwr_constr_elem_len;
832 u8 quiet_elem_len;
833 u8 num_of_quiet_elem; /* can be more the one */
Jouni Malinenf797eb72009-01-19 18:48:46 +0200834 u8 timeout_int_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100835};
836
Jiri Bencf0706e82007-05-05 11:45:53 -0700837static inline struct ieee80211_local *hw_to_local(
838 struct ieee80211_hw *hw)
839{
840 return container_of(hw, struct ieee80211_local, hw);
841}
842
843static inline struct ieee80211_hw *local_to_hw(
844 struct ieee80211_local *local)
845{
846 return &local->hw;
847}
848
Jiri Bencf0706e82007-05-05 11:45:53 -0700849
Johannes Berg571ecf62007-07-27 15:43:22 +0200850static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
851{
852 return compare_ether_addr(raddr, addr) == 0 ||
853 is_broadcast_ether_addr(raddr);
854}
855
856
Johannes Berge8975582008-10-09 12:18:51 +0200857int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
Johannes Berg5cf121c2008-02-25 16:27:43 +0100858void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200859void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
860 u32 changed);
Johannes Berg0d143fe2008-09-11 00:01:59 +0200861void ieee80211_configure_filter(struct ieee80211_local *local);
Johannes Berg46900292009-02-15 12:44:28 +0100862u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
Jiri Bencf0706e82007-05-05 11:45:53 -0700863
Johannes Berg46900292009-02-15 12:44:28 +0100864/* STA code */
Johannes Berg9c6bd792008-09-11 00:01:52 +0200865void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
Johannes Berg77fdaa12009-07-07 03:45:17 +0200866int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
867 struct cfg80211_auth_request *req);
868int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
869 struct cfg80211_assoc_request *req);
870int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
Johannes Berg667503dd2009-07-07 03:56:11 +0200871 struct cfg80211_deauth_request *req,
872 void *cookie);
Johannes Berg77fdaa12009-07-07 03:45:17 +0200873int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
Johannes Berg667503dd2009-07-07 03:56:11 +0200874 struct cfg80211_disassoc_request *req,
875 void *cookie);
Johannes Berg46900292009-02-15 12:44:28 +0100876ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
Johannes Bergf1d58c22009-06-17 13:13:00 +0200877 struct sk_buff *skb);
Kalle Valo572e0012009-02-10 17:09:31 +0200878void ieee80211_send_pspoll(struct ieee80211_local *local,
879 struct ieee80211_sub_if_data *sdata);
Johannes Berg10f644a2009-04-16 13:17:25 +0200880void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
881int ieee80211_max_network_latency(struct notifier_block *nb,
882 unsigned long data, void *dummy);
Johannes Bergcc32abd2009-05-15 11:52:31 +0200883void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
884 struct ieee80211_channel_sw_ie *sw_elem,
885 struct ieee80211_bss *bss);
Johannes Berg5bb644a2009-05-17 11:40:42 +0200886void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
887void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200888
Johannes Berg46900292009-02-15 12:44:28 +0100889/* IBSS code */
Johannes Berg46900292009-02-15 12:44:28 +0100890void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
891void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
892ieee80211_rx_result
Johannes Bergf1d58c22009-06-17 13:13:00 +0200893ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
Johannes Berg46900292009-02-15 12:44:28 +0100894struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
895 u8 *bssid, u8 *addr, u32 supp_rates);
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200896int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
897 struct cfg80211_ibss_params *params);
898int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
Johannes Berg5bb644a2009-05-17 11:40:42 +0200899void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
900void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
Johannes Berg46900292009-02-15 12:44:28 +0100901
Johannes Berg9c6bd792008-09-11 00:01:52 +0200902/* scan/BSS handling */
Johannes Berg46900292009-02-15 12:44:28 +0100903void ieee80211_scan_work(struct work_struct *work);
Johannes Bergf3b85252009-04-23 16:01:47 +0200904int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
905 const u8 *ssid, u8 ssid_len);
Johannes Bergc2b13452008-09-11 00:01:55 +0200906int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
Johannes Berg2a519312009-02-10 21:25:55 +0100907 struct cfg80211_scan_request *req);
Johannes Berg5bb644a2009-05-17 11:40:42 +0200908void ieee80211_scan_cancel(struct ieee80211_local *local);
Johannes Bergc2b13452008-09-11 00:01:55 +0200909ieee80211_rx_result
Johannes Bergf1d58c22009-06-17 13:13:00 +0200910ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200911
Johannes Berg0a51b272008-09-08 17:44:25 +0200912void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
Johannes Bergc2b13452008-09-11 00:01:55 +0200913struct ieee80211_bss *
Johannes Berg98c8fcc2008-09-08 17:44:26 +0200914ieee80211_bss_info_update(struct ieee80211_local *local,
915 struct ieee80211_rx_status *rx_status,
916 struct ieee80211_mgmt *mgmt,
917 size_t len,
918 struct ieee802_11_elems *elems,
Johannes Berg2a519312009-02-10 21:25:55 +0100919 struct ieee80211_channel *channel,
920 bool beacon);
Johannes Bergc2b13452008-09-11 00:01:55 +0200921struct ieee80211_bss *
Johannes Berg5484e232008-09-08 17:44:27 +0200922ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
923 u8 *ssid, u8 ssid_len);
Johannes Berg98c8fcc2008-09-08 17:44:26 +0200924void ieee80211_rx_bss_put(struct ieee80211_local *local,
Johannes Bergc2b13452008-09-11 00:01:55 +0200925 struct ieee80211_bss *bss);
Luis Carlos Coboee385852008-02-23 15:17:11 +0100926
Johannes Berg3e122be2008-07-09 14:40:34 +0200927/* interface handling */
928int ieee80211_if_add(struct ieee80211_local *local, const char *name,
Johannes Berg05c914f2008-09-11 00:01:58 +0200929 struct net_device **new_dev, enum nl80211_iftype type,
Luis Carlos Coboee385852008-02-23 15:17:11 +0100930 struct vif_params *params);
Johannes Bergf3947e22008-07-09 14:40:36 +0200931int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
Johannes Berg05c914f2008-09-11 00:01:58 +0200932 enum nl80211_iftype type);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200933void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
Johannes Berg75636522008-07-09 14:40:35 +0200934void ieee80211_remove_interfaces(struct ieee80211_local *local);
Johannes Berg5cff20e2009-04-29 12:26:17 +0200935u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
936void ieee80211_recalc_idle(struct ieee80211_local *local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700937
Johannes Berge2ebc742007-07-27 15:43:22 +0200938/* tx handling */
Johannes Berge2ebc742007-07-27 15:43:22 +0200939void ieee80211_clear_tx_pending(struct ieee80211_local *local);
940void ieee80211_tx_pending(unsigned long data);
Stephen Hemmingerd0cf9c02009-08-31 19:50:57 +0000941netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
942 struct net_device *dev);
943netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
944 struct net_device *dev);
Johannes Berge2ebc742007-07-27 15:43:22 +0200945
Johannes Bergde1ede72008-09-09 14:42:50 +0200946/* HT */
Johannes Bergae5eb022008-10-14 16:58:37 +0200947void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
948 struct ieee80211_ht_cap *ht_cap_ie,
Johannes Bergd9fe60d2008-10-09 12:13:49 +0200949 struct ieee80211_sta_ht_cap *ht_cap);
Johannes Bergde1ede72008-09-09 14:42:50 +0200950void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
Johannes Bergb8695a82009-02-10 21:25:46 +0100951void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
952 const u8 *da, u16 tid,
953 u16 initiator, u16 reason_code);
Johannes Bergde1ede72008-09-09 14:42:50 +0200954
955void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
956 u16 tid, u16 initiator, u16 reason);
Johannes Berg849b7962009-02-10 21:25:54 +0100957void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
958 u16 initiator, u16 reason);
Johannes Berg2dace102009-02-10 21:25:52 +0100959void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
Johannes Bergde1ede72008-09-09 14:42:50 +0200960void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
961 struct sta_info *sta,
962 struct ieee80211_mgmt *mgmt, size_t len);
963void ieee80211_process_addba_resp(struct ieee80211_local *local,
964 struct sta_info *sta,
965 struct ieee80211_mgmt *mgmt,
966 size_t len);
967void ieee80211_process_addba_request(struct ieee80211_local *local,
968 struct sta_info *sta,
969 struct ieee80211_mgmt *mgmt,
970 size_t len);
971
Johannes Berg849b7962009-02-10 21:25:54 +0100972int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
973 enum ieee80211_back_parties initiator);
974
Johannes Berg39192c02008-09-09 14:49:03 +0200975/* Spectrum management */
976void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
977 struct ieee80211_mgmt *mgmt,
978 size_t len);
979
Johannes Bergf2753dd2009-04-14 10:09:24 +0200980/* Suspend/resume and hw reconfiguration */
981int ieee80211_reconfig(struct ieee80211_local *local);
Johannes Berg84f6a012009-08-20 20:02:20 +0200982void ieee80211_stop_device(struct ieee80211_local *local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200983
Johannes Berg827b1fb2009-03-13 11:44:18 +0100984#ifdef CONFIG_PM
Bob Copeland665af4f2009-01-19 11:20:53 -0500985int __ieee80211_suspend(struct ieee80211_hw *hw);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200986
987static inline int __ieee80211_resume(struct ieee80211_hw *hw)
988{
989 return ieee80211_reconfig(hw_to_local(hw));
990}
Johannes Berg827b1fb2009-03-13 11:44:18 +0100991#else
992static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
993{
994 return 0;
995}
Johannes Bergf2753dd2009-04-14 10:09:24 +0200996
Johannes Berg827b1fb2009-03-13 11:44:18 +0100997static inline int __ieee80211_resume(struct ieee80211_hw *hw)
998{
999 return 0;
1000}
1001#endif
Bob Copeland665af4f2009-01-19 11:20:53 -05001002
Johannes Bergc2d15602007-07-27 15:43:23 +02001003/* utility functions/constants */
1004extern void *mac80211_wiphy_privid; /* for wiphy privid */
Ron Rindjunsky71364712007-12-25 17:00:36 +02001005u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
Johannes Berg05c914f2008-09-11 00:01:58 +02001006 enum nl80211_iftype type);
Johannes Bergc2d15602007-07-27 15:43:23 +02001007int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1008 int rate, int erp, int short_preamble);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +12001009void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
Johannes Berge6d6e342009-07-01 21:26:47 +02001010 struct ieee80211_hdr *hdr, const u8 *tsc,
1011 gfp_t gfp);
Johannes Berg5825fe102008-09-09 12:56:01 +02001012void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
Johannes Berge50db652008-09-09 15:07:09 +02001013void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1014 int encrypt);
Johannes Berg9c6bd792008-09-11 00:01:52 +02001015void ieee802_11_parse_elems(u8 *start, size_t len,
1016 struct ieee802_11_elems *elems);
Johannes Bergd91f36d2009-04-16 13:17:26 +02001017u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1018 struct ieee802_11_elems *elems,
1019 u64 filter, u32 crc);
Johannes Berg881d9482009-01-21 15:13:48 +01001020u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
Johannes Berg96dd22a2008-09-11 00:01:57 +02001021 enum ieee80211_band band);
Jiri Bencf0706e82007-05-05 11:45:53 -07001022
Kalle Valo520eb822008-12-18 23:35:27 +02001023void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1024void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1025void ieee80211_dynamic_ps_timer(unsigned long data);
Vivek Natarajana97b77b2008-12-23 18:39:02 -08001026void ieee80211_send_nullfunc(struct ieee80211_local *local,
1027 struct ieee80211_sub_if_data *sdata,
1028 int powersave);
Kalle Valo3cf335d2009-03-22 21:57:06 +02001029void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1030 struct ieee80211_hdr *hdr);
Kalle Valo04de8382009-03-22 21:57:35 +02001031void ieee80211_beacon_loss_work(struct work_struct *work);
Kalle Valo520eb822008-12-18 23:35:27 +02001032
Kalle Valoce7c9112008-12-18 23:35:20 +02001033void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1034 enum queue_stop_reason reason);
1035void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1036 enum queue_stop_reason reason);
Johannes Berg96f5e662009-02-12 00:51:53 +01001037void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1038 enum queue_stop_reason reason);
1039void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1040 enum queue_stop_reason reason);
Johannes Berg8f77f382009-06-07 21:58:37 +02001041void ieee80211_add_pending_skb(struct ieee80211_local *local,
1042 struct sk_buff *skb);
1043int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1044 struct sk_buff_head *skbs);
Kalle Valoce7c9112008-12-18 23:35:20 +02001045
Johannes Berg46900292009-02-15 12:44:28 +01001046void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1047 u16 transaction, u16 auth_alg,
Johannes Bergfffd0932009-07-08 14:22:54 +02001048 u8 *extra, size_t extra_len, const u8 *bssid,
1049 const u8 *key, u8 key_len, u8 key_idx);
Johannes Bergde95a542009-04-01 11:58:36 +02001050int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
Johannes Berg4d36ec582009-10-27 20:59:55 +01001051 const u8 *ie, size_t ie_len,
1052 enum ieee80211_band band);
Johannes Berg46900292009-02-15 12:44:28 +01001053void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
Johannes Bergde95a542009-04-01 11:58:36 +02001054 const u8 *ssid, size_t ssid_len,
1055 const u8 *ie, size_t ie_len);
Johannes Berg46900292009-02-15 12:44:28 +01001056
1057void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1058 const size_t supp_rates_len,
1059 const u8 *supp_rates);
1060u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1061 struct ieee802_11_elems *elems,
1062 enum ieee80211_band band);
1063
Johannes Bergf4ea83d2008-06-30 15:10:46 +02001064#ifdef CONFIG_MAC80211_NOINLINE
Johannes Bergd9e8a702008-06-30 15:10:44 +02001065#define debug_noinline noinline
1066#else
1067#define debug_noinline
1068#endif
1069
Jiri Bencf0706e82007-05-05 11:45:53 -07001070#endif /* IEEE80211_I_H */