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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. Millerccc58052008-06-16 18:50:49 -070027#include <net/iw_handler.h>
David S. Miller51cb6db2008-07-15 03:34:57 -070028#include <net/mac80211.h>
Johannes Berg2c8dccc2008-04-08 15:14:40 -040029#include "key.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070030#include "sta_info.h"
31
Johannes Berg9cfb0002008-04-03 15:17:31 +020032struct ieee80211_local;
Jiri Bencf0706e82007-05-05 11:45:53 -070033
34/* Maximum number of broadcast/multicast frames to buffer when some of the
35 * associated stations are using power saving. */
36#define AP_MAX_BC_BUFFER 128
37
38/* Maximum number of frames buffered to all STAs, including multicast frames.
39 * Note: increasing this limit increases the potential memory requirement. Each
40 * frame can be up to about 2 kB long. */
41#define TOTAL_MAX_TX_BUFFER 512
42
43/* Required encryption head and tailroom */
44#define IEEE80211_ENCRYPT_HEADROOM 8
Jouni Malinen765cb462009-01-08 13:32:01 +020045#define IEEE80211_ENCRYPT_TAILROOM 18
Jiri Bencf0706e82007-05-05 11:45:53 -070046
47/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
48 * reception of at least three fragmented frames. This limit can be increased
49 * by changing this define, at the cost of slower frame reassembly and
50 * increased memory use (about 2 kB of RAM per entry). */
51#define IEEE80211_FRAGMENT_MAX 4
52
Johannes Berg0a51b272008-09-08 17:44:25 +020053/*
54 * Time after which we ignore scan results and no longer report/use
55 * them in any way.
56 */
57#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
58
Johannes Berg20ad19d2009-02-10 21:25:45 +010059#define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
60
Jiri Bencf0706e82007-05-05 11:45:53 -070061struct ieee80211_fragment_entry {
62 unsigned long first_frag_time;
63 unsigned int seq;
64 unsigned int rx_queue;
65 unsigned int last_frag;
66 unsigned int extra_len;
67 struct sk_buff_head skb_list;
68 int ccmp; /* Whether fragments were encrypted with CCMP */
69 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
70};
71
72
Johannes Bergc2b13452008-09-11 00:01:55 +020073struct ieee80211_bss {
Johannes Berg00d3f142009-02-10 21:26:00 +010074 /* Yes, this is a hack */
75 struct cfg80211_bss cbss;
76
77 /* don't want to look up all the time */
Johannes Berg056cdd52008-03-26 23:21:47 +010078 size_t ssid_len;
Jiri Bencf0706e82007-05-05 11:45:53 -070079 u8 ssid[IEEE80211_MAX_SSID_LEN];
Johannes Berg00d3f142009-02-10 21:26:00 +010080
Emmanuel Grumbach98f7dfd2008-07-18 13:52:59 +080081 u8 dtim_period;
Johannes Berg00d3f142009-02-10 21:26:00 +010082
Jouni Malinen43ac2ca2008-08-15 22:21:27 +030083 bool wmm_used;
Johannes Berg00d3f142009-02-10 21:26:00 +010084
85 unsigned long last_probe_resp;
86
Luis Carlos Coboee385852008-02-23 15:17:11 +010087#ifdef CONFIG_MAC80211_MESH
88 u8 *mesh_id;
89 size_t mesh_id_len;
John W. Linville24736702008-04-08 14:15:46 -040090 u8 *mesh_cfg;
Johannes Berg902acc72008-02-23 15:17:19 +010091#endif
Johannes Berg00d3f142009-02-10 21:26:00 +010092
Jiri Bencf0706e82007-05-05 11:45:53 -070093#define IEEE80211_MAX_SUPP_RATES 32
94 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
95 size_t supp_rates_len;
Jiri Bencf0706e82007-05-05 11:45:53 -070096
Johannes Berg00d3f142009-02-10 21:26:00 +010097 /*
98 * During assocation, we save an ERP value from a probe response so
Daniel Drake56282212007-07-10 19:32:10 +020099 * that we can feed ERP info to the driver when handling the
100 * association completes. these fields probably won't be up-to-date
Johannes Berg00d3f142009-02-10 21:26:00 +0100101 * otherwise, you probably don't want to use them.
102 */
103 bool has_erp_value;
Daniel Drake56282212007-07-10 19:32:10 +0200104 u8 erp_value;
Jiri Bencf0706e82007-05-05 11:45:53 -0700105};
106
Johannes Bergc2b13452008-09-11 00:01:55 +0200107static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100108{
109#ifdef CONFIG_MAC80211_MESH
110 return bss->mesh_cfg;
111#endif
112 return NULL;
113}
114
Johannes Bergc2b13452008-09-11 00:01:55 +0200115static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100116{
117#ifdef CONFIG_MAC80211_MESH
118 return bss->mesh_id;
119#endif
120 return NULL;
121}
122
Johannes Bergc2b13452008-09-11 00:01:55 +0200123static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100124{
125#ifdef CONFIG_MAC80211_MESH
126 return bss->mesh_id_len;
127#endif
128 return 0;
129}
130
Jiri Bencf0706e82007-05-05 11:45:53 -0700131
Johannes Berg9ae54c82008-01-31 19:48:20 +0100132typedef unsigned __bitwise__ ieee80211_tx_result;
133#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
134#define TX_DROP ((__force ieee80211_tx_result) 1u)
135#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
136
Johannes Berg5cf121c2008-02-25 16:27:43 +0100137#define IEEE80211_TX_FRAGMENTED BIT(0)
138#define IEEE80211_TX_UNICAST BIT(1)
139#define IEEE80211_TX_PS_BUFFERED BIT(2)
Johannes Berg9ae54c82008-01-31 19:48:20 +0100140
Johannes Berg5cf121c2008-02-25 16:27:43 +0100141struct ieee80211_tx_data {
Jiri Bencf0706e82007-05-05 11:45:53 -0700142 struct sk_buff *skb;
143 struct net_device *dev;
144 struct ieee80211_local *local;
145 struct ieee80211_sub_if_data *sdata;
146 struct sta_info *sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700147 struct ieee80211_key *key;
Jiri Bencf0706e82007-05-05 11:45:53 -0700148
Johannes Berg5cf121c2008-02-25 16:27:43 +0100149 struct ieee80211_channel *channel;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100150
Harvey Harrisona4b7d7b2008-07-15 18:44:14 -0700151 u16 ethertype;
Johannes Berg056cdd52008-03-26 23:21:47 +0100152 unsigned int flags;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100153};
154
155
156typedef unsigned __bitwise__ ieee80211_rx_result;
157#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
158#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
159#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
160#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
161
162#define IEEE80211_RX_IN_SCAN BIT(0)
163/* frame is destined to interface currently processed (incl. multicast frames) */
164#define IEEE80211_RX_RA_MATCH BIT(1)
165#define IEEE80211_RX_AMSDU BIT(2)
166#define IEEE80211_RX_CMNTR_REPORTED BIT(3)
167#define IEEE80211_RX_FRAGMENTED BIT(4)
168
169struct ieee80211_rx_data {
170 struct sk_buff *skb;
171 struct net_device *dev;
172 struct ieee80211_local *local;
173 struct ieee80211_sub_if_data *sdata;
174 struct sta_info *sta;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100175 struct ieee80211_key *key;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100176 struct ieee80211_rx_status *status;
177 struct ieee80211_rate *rate;
Johannes Berg056cdd52008-03-26 23:21:47 +0100178
Johannes Berg056cdd52008-03-26 23:21:47 +0100179 unsigned int flags;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100180 int sent_ps_buffered;
181 int queue;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100182 u32 tkip_iv32;
183 u16 tkip_iv16;
Jiri Bencf0706e82007-05-05 11:45:53 -0700184};
185
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100186struct beacon_data {
187 u8 *head, *tail;
188 int head_len, tail_len;
189 int dtim_period;
190};
191
Jiri Bencf0706e82007-05-05 11:45:53 -0700192struct ieee80211_if_ap {
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100193 struct beacon_data *beacon;
Jiri Bencf0706e82007-05-05 11:45:53 -0700194
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400195 struct list_head vlans;
196
Jiri Bencf0706e82007-05-05 11:45:53 -0700197 /* yes, this looks ugly, but guarantees that we can later use
198 * bitmap_empty :)
Johannes Berg004c8722008-02-20 11:21:35 +0100199 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
Jiri Bencf0706e82007-05-05 11:45:53 -0700200 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
Jiri Bencf0706e82007-05-05 11:45:53 -0700201 struct sk_buff_head ps_bc_buf;
Johannes Berg056cdd52008-03-26 23:21:47 +0100202 atomic_t num_sta_ps; /* number of stations in PS mode */
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100203 int dtim_count;
Jiri Bencf0706e82007-05-05 11:45:53 -0700204};
205
206struct ieee80211_if_wds {
Jiri Bencf0706e82007-05-05 11:45:53 -0700207 struct sta_info *sta;
Johannes Berg056cdd52008-03-26 23:21:47 +0100208 u8 remote_addr[ETH_ALEN];
Jiri Bencf0706e82007-05-05 11:45:53 -0700209};
210
211struct ieee80211_if_vlan {
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400212 struct list_head list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700213};
214
Luis Carlos Coboee385852008-02-23 15:17:11 +0100215struct mesh_stats {
216 __u32 fwded_frames; /* Mesh forwarded frames */
217 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
218 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
219 atomic_t estab_plinks;
220};
221
222#define PREQ_Q_F_START 0x1
223#define PREQ_Q_F_REFRESH 0x2
224struct mesh_preq_queue {
225 struct list_head list;
226 u8 dst[ETH_ALEN];
227 u8 flags;
228};
229
Johannes Berg46900292009-02-15 12:44:28 +0100230/* flags used in struct ieee80211_if_managed.flags */
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400231#define IEEE80211_STA_SSID_SET BIT(0)
232#define IEEE80211_STA_BSSID_SET BIT(1)
233#define IEEE80211_STA_PREV_BSSID_SET BIT(2)
234#define IEEE80211_STA_AUTHENTICATED BIT(3)
235#define IEEE80211_STA_ASSOCIATED BIT(4)
236#define IEEE80211_STA_PROBEREQ_POLL BIT(5)
237#define IEEE80211_STA_CREATE_IBSS BIT(6)
Johannes Berg7986cf92009-03-21 17:08:43 +0100238/* hole at 7, please re-use */
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400239#define IEEE80211_STA_WMM_ENABLED BIT(8)
Johannes Berg7986cf92009-03-21 17:08:43 +0100240/* hole at 9, please re-use */
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400241#define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
242#define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
243#define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
Johannes Berg5b98b1f2007-11-03 13:11:10 +0000244#define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
Vasanthakumar Thiagarajaneb469362008-12-23 21:30:50 +0530245#define IEEE80211_STA_TKIP_WEP_USED BIT(14)
Sujithc481ec92009-01-06 09:28:37 +0530246#define IEEE80211_STA_CSA_RECEIVED BIT(15)
Jouni Malinen5394af42009-01-08 13:31:59 +0200247#define IEEE80211_STA_MFP_ENABLED BIT(16)
Jouni Malinen636a5d32009-03-19 13:39:22 +0200248#define IEEE80211_STA_EXT_SME BIT(17)
Johannes Bergccd7b362008-09-11 00:01:56 +0200249/* flags for MLME request */
Tomas Winkler48c2fc52008-08-06 14:22:01 +0300250#define IEEE80211_STA_REQ_SCAN 0
Ron Rindjunsky9859b812008-08-09 03:02:19 +0300251#define IEEE80211_STA_REQ_DIRECT_PROBE 1
252#define IEEE80211_STA_REQ_AUTH 2
253#define IEEE80211_STA_REQ_RUN 3
Tomas Winkler48c2fc52008-08-06 14:22:01 +0300254
Tomas Winkler48c2fc52008-08-06 14:22:01 +0300255/* bitfield of allowed auth algs */
256#define IEEE80211_AUTH_ALG_OPEN BIT(0)
257#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
258#define IEEE80211_AUTH_ALG_LEAP BIT(2)
Jouni Malinen636a5d32009-03-19 13:39:22 +0200259#define IEEE80211_AUTH_ALG_FT BIT(3)
Tomas Winkler48c2fc52008-08-06 14:22:01 +0300260
Johannes Berg46900292009-02-15 12:44:28 +0100261struct ieee80211_if_managed {
Johannes Berg056cdd52008-03-26 23:21:47 +0100262 struct timer_list timer;
Sujithc481ec92009-01-06 09:28:37 +0530263 struct timer_list chswitch_timer;
Johannes Berg056cdd52008-03-26 23:21:47 +0100264 struct work_struct work;
Sujithc481ec92009-01-06 09:28:37 +0530265 struct work_struct chswitch_work;
Kalle Valo04de8382009-03-22 21:57:35 +0200266 struct work_struct beacon_loss_work;
Johannes Berg46900292009-02-15 12:44:28 +0100267
Johannes Berg056cdd52008-03-26 23:21:47 +0100268 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
Johannes Berg46900292009-02-15 12:44:28 +0100269
Johannes Berg056cdd52008-03-26 23:21:47 +0100270 u8 ssid[IEEE80211_MAX_SSID_LEN];
Jiri Bencf0706e82007-05-05 11:45:53 -0700271 size_t ssid_len;
Johannes Berg46900292009-02-15 12:44:28 +0100272
273 enum {
274 IEEE80211_STA_MLME_DISABLED,
275 IEEE80211_STA_MLME_DIRECT_PROBE,
276 IEEE80211_STA_MLME_AUTHENTICATE,
277 IEEE80211_STA_MLME_ASSOCIATE,
278 IEEE80211_STA_MLME_ASSOCIATED,
279 } state;
280
Jiri Bencf0706e82007-05-05 11:45:53 -0700281 u16 aid;
282 u16 ap_capab, capab;
283 u8 *extra_ie; /* to be added to the end of AssocReq */
284 size_t extra_ie_len;
285
286 /* The last AssocReq/Resp IEs */
287 u8 *assocreq_ies, *assocresp_ies;
288 size_t assocreq_ies_len, assocresp_ies_len;
289
Johannes Berg056cdd52008-03-26 23:21:47 +0100290 struct sk_buff_head skb_queue;
291
Ron Rindjunsky6042a3e2008-08-08 01:50:46 +0300292 int assoc_scan_tries; /* number of scans done pre-association */
Ron Rindjunsky9859b812008-08-09 03:02:19 +0300293 int direct_probe_tries; /* retries for direct probes */
Ron Rindjunsky6042a3e2008-08-08 01:50:46 +0300294 int auth_tries; /* retries for auth req */
295 int assoc_tries; /* retries for assoc req */
Jiri Bencf0706e82007-05-05 11:45:53 -0700296
Johannes Berg965beda2009-04-16 13:17:24 +0200297 bool powersave; /* powersave requested for this iface */
298
Johannes Berg056cdd52008-03-26 23:21:47 +0100299 unsigned long request;
300
301 unsigned long last_probe;
Kalle Valo15b7b062009-03-22 21:57:14 +0200302 unsigned long last_beacon;
Johannes Berg056cdd52008-03-26 23:21:47 +0100303
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400304 unsigned int flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700305
Jiri Bencf0706e82007-05-05 11:45:53 -0700306 unsigned int auth_algs; /* bitfield of allowed auth algs */
307 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
308 int auth_transaction;
309
Johannes Bergd91f36d2009-04-16 13:17:26 +0200310 u32 beacon_crc;
311
Jouni Malinenfdfacf02009-01-08 13:32:05 +0200312 enum {
313 IEEE80211_MFP_DISABLED,
314 IEEE80211_MFP_OPTIONAL,
315 IEEE80211_MFP_REQUIRED
316 } mfp; /* management frame protection */
317
Jiri Bencf0706e82007-05-05 11:45:53 -0700318 int wmm_last_param_set;
Jouni Malinen9aed3cc2009-01-13 16:03:29 +0200319
320 /* Extra IE data for management frames */
Jouni Malinen636a5d32009-03-19 13:39:22 +0200321 u8 *sme_auth_ie;
322 size_t sme_auth_ie_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700323};
324
Johannes Berg46900292009-02-15 12:44:28 +0100325enum ieee80211_ibss_request {
326 IEEE80211_IBSS_REQ_RUN = 0,
327};
328
329struct ieee80211_if_ibss {
330 struct timer_list timer;
331 struct work_struct work;
332
333 struct sk_buff_head skb_queue;
334
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200335 unsigned long request;
336 unsigned long last_scan_completed;
337 bool fixed_bssid;
338 bool fixed_channel;
Johannes Berg46900292009-02-15 12:44:28 +0100339
340 u8 bssid[ETH_ALEN];
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200341 u8 ssid[IEEE80211_MAX_SSID_LEN];
342 u8 ssid_len, ie_len;
343 u8 *ie;
344 struct ieee80211_channel *channel;
Johannes Berg46900292009-02-15 12:44:28 +0100345
346 unsigned long ibss_join_req;
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200347 /* probe response/beacon for IBSS */
348 struct sk_buff *presp, *skb;
Johannes Berg46900292009-02-15 12:44:28 +0100349
350 enum {
351 IEEE80211_IBSS_MLME_SEARCH,
352 IEEE80211_IBSS_MLME_JOINED,
353 } state;
354};
355
Johannes Berg472dbc42008-09-11 00:01:49 +0200356struct ieee80211_if_mesh {
357 struct work_struct work;
358 struct timer_list housekeeping_timer;
359 struct timer_list mesh_path_timer;
360 struct sk_buff_head skb_queue;
361
362 bool housekeeping;
363
364 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
365 size_t mesh_id_len;
366 /* Active Path Selection Protocol Identifier */
367 u8 mesh_pp_id[4];
368 /* Active Path Selection Metric Identifier */
369 u8 mesh_pm_id[4];
370 /* Congestion Control Mode Identifier */
371 u8 mesh_cc_id[4];
372 /* Local mesh Destination Sequence Number */
373 u32 dsn;
374 /* Last used PREQ ID */
375 u32 preq_id;
376 atomic_t mpaths;
377 /* Timestamp of last DSN update */
378 unsigned long last_dsn_update;
379 /* Timestamp of last DSN sent */
380 unsigned long last_preq;
381 struct mesh_rmc *rmc;
382 spinlock_t mesh_preq_queue_lock;
383 struct mesh_preq_queue preq_queue;
384 int preq_queue_len;
385 struct mesh_stats mshstats;
386 struct mesh_config mshcfg;
387 u32 mesh_seqnum;
388 bool accepting_plinks;
Johannes Berg472dbc42008-09-11 00:01:49 +0200389};
Johannes Berg902acc72008-02-23 15:17:19 +0100390
391#ifdef CONFIG_MAC80211_MESH
Johannes Berg472dbc42008-09-11 00:01:49 +0200392#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
393 do { (msh)->mshstats.name++; } while (0)
Johannes Berg902acc72008-02-23 15:17:19 +0100394#else
Johannes Berg472dbc42008-09-11 00:01:49 +0200395#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
Johannes Berg902acc72008-02-23 15:17:19 +0100396 do { } while (0)
397#endif
Jiri Bencf0706e82007-05-05 11:45:53 -0700398
Johannes Berg213cd112008-09-11 00:01:54 +0200399/**
400 * enum ieee80211_sub_if_data_flags - virtual interface flags
401 *
402 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
403 * @IEEE80211_SDATA_PROMISC: interface is promisc
Johannes Berg213cd112008-09-11 00:01:54 +0200404 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
405 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
406 * associated stations and deliver multicast frames both
407 * back to wireless media and to the local net stack.
408 */
409enum ieee80211_sub_if_data_flags {
410 IEEE80211_SDATA_ALLMULTI = BIT(0),
411 IEEE80211_SDATA_PROMISC = BIT(1),
Johannes Berg7986cf92009-03-21 17:08:43 +0100412 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
413 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
Johannes Berg213cd112008-09-11 00:01:54 +0200414};
415
Jiri Bencf0706e82007-05-05 11:45:53 -0700416struct ieee80211_sub_if_data {
417 struct list_head list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700418
419 struct wireless_dev wdev;
420
Johannes Berg11a843b2007-08-28 17:01:55 -0400421 /* keys */
422 struct list_head key_list;
423
Jiri Bencf0706e82007-05-05 11:45:53 -0700424 struct net_device *dev;
425 struct ieee80211_local *local;
426
Jiri Slaby13262ff2007-08-28 17:01:54 -0400427 unsigned int flags;
Daniel Drake7e9ed182007-07-27 15:43:24 +0200428
Jiri Bencf0706e82007-05-05 11:45:53 -0700429 int drop_unencrypted;
Jiri Bencf0706e82007-05-05 11:45:53 -0700430
Jiri Bencf0706e82007-05-05 11:45:53 -0700431 /* Fragment table for host-based reassembly */
432 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
433 unsigned int fragment_next;
434
435#define NUM_DEFAULT_KEYS 4
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200436#define NUM_DEFAULT_MGMT_KEYS 2
437 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
Jiri Bencf0706e82007-05-05 11:45:53 -0700438 struct ieee80211_key *default_key;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200439 struct ieee80211_key *default_mgmt_key;
Jiri Bencf0706e82007-05-05 11:45:53 -0700440
Johannes Berg94778282008-10-10 13:21:59 +0200441 u16 sequence_number;
442
Johannes Berg3e122be2008-07-09 14:40:34 +0200443 /*
444 * AP this belongs to: self in AP mode and
445 * corresponding AP in VLAN mode, NULL for
446 * all others (might be needed later in IBSS)
447 */
448 struct ieee80211_if_ap *bss;
449
450 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
451 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
Jiri Bencf0706e82007-05-05 11:45:53 -0700452
453 union {
454 struct ieee80211_if_ap ap;
455 struct ieee80211_if_wds wds;
456 struct ieee80211_if_vlan vlan;
Johannes Berg46900292009-02-15 12:44:28 +0100457 struct ieee80211_if_managed mgd;
458 struct ieee80211_if_ibss ibss;
Johannes Berg472dbc42008-09-11 00:01:49 +0200459#ifdef CONFIG_MAC80211_MESH
460 struct ieee80211_if_mesh mesh;
461#endif
Michael Wu8cc9a732008-01-31 19:48:23 +0100462 u32 mntr_flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700463 } u;
Jiri Bence9f207f2007-05-05 11:46:38 -0700464
465#ifdef CONFIG_MAC80211_DEBUGFS
466 struct dentry *debugfsdir;
467 union {
468 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700469 struct dentry *drop_unencrypted;
Jiri Bence9f207f2007-05-05 11:46:38 -0700470 struct dentry *state;
471 struct dentry *bssid;
472 struct dentry *prev_bssid;
473 struct dentry *ssid_len;
474 struct dentry *aid;
475 struct dentry *ap_capab;
476 struct dentry *capab;
477 struct dentry *extra_ie_len;
478 struct dentry *auth_tries;
479 struct dentry *assoc_tries;
480 struct dentry *auth_algs;
481 struct dentry *auth_alg;
482 struct dentry *auth_transaction;
483 struct dentry *flags;
Jouni Malinen93015f02008-08-25 11:57:06 +0300484 struct dentry *force_unicast_rateidx;
485 struct dentry *max_ratectrl_rateidx;
Jiri Bence9f207f2007-05-05 11:46:38 -0700486 } sta;
487 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700488 struct dentry *drop_unencrypted;
Jiri Bence9f207f2007-05-05 11:46:38 -0700489 struct dentry *num_sta_ps;
Jiri Bence9f207f2007-05-05 11:46:38 -0700490 struct dentry *dtim_count;
Jiri Bence9f207f2007-05-05 11:46:38 -0700491 struct dentry *force_unicast_rateidx;
492 struct dentry *max_ratectrl_rateidx;
493 struct dentry *num_buffered_multicast;
Jiri Bence9f207f2007-05-05 11:46:38 -0700494 } ap;
495 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700496 struct dentry *drop_unencrypted;
Jiri Bence9f207f2007-05-05 11:46:38 -0700497 struct dentry *peer;
Jouni Malinen93015f02008-08-25 11:57:06 +0300498 struct dentry *force_unicast_rateidx;
499 struct dentry *max_ratectrl_rateidx;
Jiri Bence9f207f2007-05-05 11:46:38 -0700500 } wds;
501 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700502 struct dentry *drop_unencrypted;
Jouni Malinen93015f02008-08-25 11:57:06 +0300503 struct dentry *force_unicast_rateidx;
504 struct dentry *max_ratectrl_rateidx;
Jiri Bence9f207f2007-05-05 11:46:38 -0700505 } vlan;
506 struct {
507 struct dentry *mode;
508 } monitor;
Jiri Bence9f207f2007-05-05 11:46:38 -0700509 } debugfs;
Jouni Malinen2b58b202008-08-28 15:12:06 +0300510 struct {
511 struct dentry *default_key;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200512 struct dentry *default_mgmt_key;
Jouni Malinen2b58b202008-08-28 15:12:06 +0300513 } common_debugfs;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100514
515#ifdef CONFIG_MAC80211_MESH
516 struct dentry *mesh_stats_dir;
517 struct {
518 struct dentry *fwded_frames;
519 struct dentry *dropped_frames_ttl;
520 struct dentry *dropped_frames_no_route;
521 struct dentry *estab_plinks;
Johannes Berg902acc72008-02-23 15:17:19 +0100522 struct timer_list mesh_path_timer;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100523 } mesh_stats;
524
525 struct dentry *mesh_config_dir;
526 struct {
527 struct dentry *dot11MeshRetryTimeout;
528 struct dentry *dot11MeshConfirmTimeout;
529 struct dentry *dot11MeshHoldingTimeout;
530 struct dentry *dot11MeshMaxRetries;
531 struct dentry *dot11MeshTTL;
532 struct dentry *auto_open_plinks;
533 struct dentry *dot11MeshMaxPeerLinks;
534 struct dentry *dot11MeshHWMPactivePathTimeout;
535 struct dentry *dot11MeshHWMPpreqMinInterval;
536 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
537 struct dentry *dot11MeshHWMPmaxPREQretries;
538 struct dentry *path_refresh_time;
539 struct dentry *min_discovery_timeout;
540 } mesh_config;
541#endif
542
Jiri Bence9f207f2007-05-05 11:46:38 -0700543#endif
Johannes Berg32bfd352007-12-19 01:31:26 +0100544 /* must be last, dynamically sized area in this! */
545 struct ieee80211_vif vif;
Jiri Bencf0706e82007-05-05 11:45:53 -0700546};
547
Johannes Berg32bfd352007-12-19 01:31:26 +0100548static inline
549struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
550{
551 return container_of(p, struct ieee80211_sub_if_data, vif);
552}
553
Johannes Berg472dbc42008-09-11 00:01:49 +0200554static inline void
555ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
556 u8 mesh_id_len, u8 *mesh_id)
557{
558#ifdef CONFIG_MAC80211_MESH
559 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
560 ifmsh->mesh_id_len = mesh_id_len;
561 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
562#else
563 WARN_ON(1);
564#endif
565}
566
Jiri Bencf0706e82007-05-05 11:45:53 -0700567enum {
568 IEEE80211_RX_MSG = 1,
569 IEEE80211_TX_STATUS_MSG = 2,
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +0200570 IEEE80211_DELBA_MSG = 3,
571 IEEE80211_ADDBA_MSG = 4,
Jiri Bencf0706e82007-05-05 11:45:53 -0700572};
573
Kalle Valoce7c9112008-12-18 23:35:20 +0200574enum queue_stop_reason {
575 IEEE80211_QUEUE_STOP_REASON_DRIVER,
Kalle Valo520eb822008-12-18 23:35:27 +0200576 IEEE80211_QUEUE_STOP_REASON_PS,
Johannes Berg96f5e662009-02-12 00:51:53 +0100577 IEEE80211_QUEUE_STOP_REASON_CSA,
578 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
Johannes Berg25420602009-03-13 11:43:36 +0100579 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
Johannes Berg2a577d92009-03-23 17:28:37 +0100580 IEEE80211_QUEUE_STOP_REASON_PENDING,
Kalle Valoce7c9112008-12-18 23:35:20 +0200581};
582
Johannes Berg133b8222008-09-16 14:18:59 +0200583struct ieee80211_master_priv {
584 struct ieee80211_local *local;
585};
586
Jiri Bencf0706e82007-05-05 11:45:53 -0700587struct ieee80211_local {
588 /* embed the driver visible part.
589 * don't cast (use the static inlines below), but we keep
590 * it first anyway so they become a no-op */
591 struct ieee80211_hw hw;
592
593 const struct ieee80211_ops *ops;
594
Johannes Berge4e72fb2009-03-23 17:28:42 +0100595 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
Johannes Berg96f5e662009-02-12 00:51:53 +0100596 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
Kalle Valoce7c9112008-12-18 23:35:20 +0200597 spinlock_t queue_stop_reason_lock;
Johannes Berg96f5e662009-02-12 00:51:53 +0100598
Jiri Bencf0706e82007-05-05 11:45:53 -0700599 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
Jiri Bencf0706e82007-05-05 11:45:53 -0700600 int open_count;
Michael Wu3d30d942008-01-31 19:48:27 +0100601 int monitors, cooked_mntrs;
Michael Wu8cc9a732008-01-31 19:48:23 +0100602 /* number of interfaces with corresponding FIF_ flags */
603 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
Johannes Berg4150c572007-09-17 01:29:23 -0400604 unsigned int filter_flags; /* FIF_* */
Jiri Bencf0706e82007-05-05 11:45:53 -0700605 struct iw_statistics wstats;
Johannes Bergd0709a62008-02-25 16:27:46 +0100606 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
Johannes Bergb306f452007-07-10 19:32:08 +0200607 int tx_headroom; /* required headroom for hardware/radiotap */
Jiri Bencf0706e82007-05-05 11:45:53 -0700608
Jiri Bencf0706e82007-05-05 11:45:53 -0700609 /* Tasklet and skb queue to process calls from IRQ mode. All frames
610 * added to skb_queue will be processed, but frames in
611 * skb_queue_unreliable may be dropped if the total length of these
612 * queues increases over the limit. */
613#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
614 struct tasklet_struct tasklet;
615 struct sk_buff_head skb_queue;
616 struct sk_buff_head skb_queue_unreliable;
617
Johannes Bergd0709a62008-02-25 16:27:46 +0100618 /* Station data */
619 /*
620 * The lock only protects the list, hash, timer and counter
621 * against manipulation, reads are done in RCU. Additionally,
Johannes Bergb16bd152008-04-11 21:40:35 +0200622 * the lock protects each BSS's TIM bitmap.
Johannes Bergd0709a62008-02-25 16:27:46 +0100623 */
624 spinlock_t sta_lock;
625 unsigned long num_sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700626 struct list_head sta_list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700627 struct sta_info *sta_hash[STA_HASH_SIZE];
628 struct timer_list sta_cleanup;
629
Johannes Berg2a577d92009-03-23 17:28:37 +0100630 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
Jiri Bencf0706e82007-05-05 11:45:53 -0700631 struct tasklet_struct tx_pending_tasklet;
632
Johannes Bergcd8ffc82009-03-23 17:28:41 +0100633 /*
634 * This lock is used to prevent concurrent A-MPDU
635 * session start/stop processing, this thus also
636 * synchronises the ->ampdu_action() callback to
637 * drivers and limits it to one at a time.
638 */
639 spinlock_t ampdu_lock;
640
Johannes Berg53918992007-09-26 15:19:47 +0200641 /* number of interfaces with corresponding IFF_ flags */
642 atomic_t iff_allmultis, iff_promiscs;
Jiri Bencf0706e82007-05-05 11:45:53 -0700643
644 struct rate_control_ref *rate_ctrl;
645
Jiri Bencf0706e82007-05-05 11:45:53 -0700646 struct crypto_blkcipher *wep_tx_tfm;
647 struct crypto_blkcipher *wep_rx_tfm;
648 u32 wep_iv;
Jiri Bencf0706e82007-05-05 11:45:53 -0700649
Johannes Bergc771c9d2009-01-23 22:54:03 +0100650 /* see iface.c */
Johannes Berg79010422007-09-18 17:29:21 -0400651 struct list_head interfaces;
Johannes Bergc771c9d2009-01-23 22:54:03 +0100652 struct mutex iflist_mtx;
Johannes Berg79010422007-09-18 17:29:21 -0400653
Johannes Bergb16bd152008-04-11 21:40:35 +0200654 /*
655 * Key lock, protects sdata's key_list and sta_info's
656 * key pointers (write access, they're RCU.)
657 */
658 spinlock_t key_lock;
659
660
Johannes Bergc2b13452008-09-11 00:01:55 +0200661 /* Scanning and BSS list */
Johannes Bergf3b85252009-04-23 16:01:47 +0200662 struct mutex scan_mtx;
Johannes Bergc2b13452008-09-11 00:01:55 +0200663 bool sw_scanning, hw_scanning;
Johannes Berg2a519312009-02-10 21:25:55 +0100664 struct cfg80211_ssid scan_ssid;
665 struct cfg80211_scan_request int_scan_req;
666 struct cfg80211_scan_request *scan_req;
667 struct ieee80211_channel *scan_channel;
Johannes Bergde95a542009-04-01 11:58:36 +0200668 const u8 *orig_ies;
669 int orig_ies_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700670 int scan_channel_idx;
Johannes Bergde95a542009-04-01 11:58:36 +0200671 int scan_ies_len;
Johannes Berg8318d782008-01-24 19:38:38 +0100672
Jiri Bencf0706e82007-05-05 11:45:53 -0700673 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
Jiri Bencf0706e82007-05-05 11:45:53 -0700674 struct delayed_work scan_work;
Johannes Berg491775a2008-09-08 17:44:23 +0200675 struct ieee80211_sub_if_data *scan_sdata;
Sujith094d05d2008-12-12 11:57:43 +0530676 enum nl80211_channel_type oper_channel_type;
Johannes Berg2a519312009-02-10 21:25:55 +0100677 struct ieee80211_channel *oper_channel, *csa_channel;
Jiri Bencf0706e82007-05-05 11:45:53 -0700678
679 /* SNMP counters */
680 /* dot11CountersTable */
681 u32 dot11TransmittedFragmentCount;
682 u32 dot11MulticastTransmittedFrameCount;
683 u32 dot11FailedCount;
684 u32 dot11RetryCount;
685 u32 dot11MultipleRetryCount;
686 u32 dot11FrameDuplicateCount;
687 u32 dot11ReceivedFragmentCount;
688 u32 dot11MulticastReceivedFrameCount;
689 u32 dot11TransmittedFrameCount;
Jiri Bencf0706e82007-05-05 11:45:53 -0700690
691#ifdef CONFIG_MAC80211_LEDS
692 int tx_led_counter, rx_led_counter;
Ivo van Doorncdcb0062008-01-07 19:45:24 +0100693 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
694 char tx_led_name[32], rx_led_name[32],
695 assoc_led_name[32], radio_led_name[32];
Jiri Bencf0706e82007-05-05 11:45:53 -0700696#endif
697
Jiri Bence9f207f2007-05-05 11:46:38 -0700698#ifdef CONFIG_MAC80211_DEBUGFS
699 struct work_struct sta_debugfs_add;
700#endif
701
Jiri Bencf0706e82007-05-05 11:45:53 -0700702#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
703 /* TX/RX handler statistics */
704 unsigned int tx_handlers_drop;
705 unsigned int tx_handlers_queued;
706 unsigned int tx_handlers_drop_unencrypted;
707 unsigned int tx_handlers_drop_fragment;
708 unsigned int tx_handlers_drop_wep;
709 unsigned int tx_handlers_drop_not_assoc;
710 unsigned int tx_handlers_drop_unauth_port;
711 unsigned int rx_handlers_drop;
712 unsigned int rx_handlers_queued;
713 unsigned int rx_handlers_drop_nullfunc;
714 unsigned int rx_handlers_drop_defrag;
715 unsigned int rx_handlers_drop_short;
716 unsigned int rx_handlers_drop_passive_scan;
717 unsigned int tx_expand_skb_head;
718 unsigned int tx_expand_skb_head_cloned;
719 unsigned int rx_expand_skb_head;
720 unsigned int rx_expand_skb_head2;
721 unsigned int rx_handlers_fragments;
722 unsigned int tx_status_drop;
Jiri Bencf0706e82007-05-05 11:45:53 -0700723#define I802_DEBUG_INC(c) (c)++
724#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
725#define I802_DEBUG_INC(c) do { } while (0)
726#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
727
728
Jiri Bencf0706e82007-05-05 11:45:53 -0700729 int total_ps_buffered; /* total number of all buffered unicast and
730 * multicast packets for power saving stations
731 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700732 int wifi_wme_noack_test;
733 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
Kalle Valo520eb822008-12-18 23:35:27 +0200734
Kalle Valo572e0012009-02-10 17:09:31 +0200735 bool pspolling;
Johannes Berg965beda2009-04-16 13:17:24 +0200736 /*
737 * PS can only be enabled when we have exactly one managed
738 * interface (and monitors) in PS, this then points there.
739 */
740 struct ieee80211_sub_if_data *ps_sdata;
Kalle Valo520eb822008-12-18 23:35:27 +0200741 struct work_struct dynamic_ps_enable_work;
742 struct work_struct dynamic_ps_disable_work;
743 struct timer_list dynamic_ps_timer;
Johannes Berg10f644a2009-04-16 13:17:25 +0200744 struct notifier_block network_latency_notifier;
Jiri Bencf0706e82007-05-05 11:45:53 -0700745
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100746 int user_power_level; /* in dBm */
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530747 int power_constr_level; /* in dBm */
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100748
Johannes Bergf2753dd2009-04-14 10:09:24 +0200749 struct work_struct restart_work;
750
Jiri Bence9f207f2007-05-05 11:46:38 -0700751#ifdef CONFIG_MAC80211_DEBUGFS
752 struct local_debugfsdentries {
Johannes Berg4b7679a2008-09-18 18:14:18 +0200753 struct dentry *rcdir;
754 struct dentry *rcname;
Jiri Bence9f207f2007-05-05 11:46:38 -0700755 struct dentry *frequency;
Jiri Bence9f207f2007-05-05 11:46:38 -0700756 struct dentry *rts_threshold;
757 struct dentry *fragmentation_threshold;
758 struct dentry *short_retry_limit;
759 struct dentry *long_retry_limit;
760 struct dentry *total_ps_buffered;
Jiri Bence9f207f2007-05-05 11:46:38 -0700761 struct dentry *wep_iv;
Alina Friedrichsenae54c982009-01-23 05:33:37 +0100762 struct dentry *tsf;
Johannes Berg827b1fb2009-03-13 11:44:18 +0100763 struct dentry *reset;
Jiri Bence9f207f2007-05-05 11:46:38 -0700764 struct dentry *statistics;
765 struct local_debugfsdentries_statsdentries {
766 struct dentry *transmitted_fragment_count;
767 struct dentry *multicast_transmitted_frame_count;
768 struct dentry *failed_count;
769 struct dentry *retry_count;
770 struct dentry *multiple_retry_count;
771 struct dentry *frame_duplicate_count;
772 struct dentry *received_fragment_count;
773 struct dentry *multicast_received_frame_count;
774 struct dentry *transmitted_frame_count;
775 struct dentry *wep_undecryptable_count;
776 struct dentry *num_scans;
777#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
778 struct dentry *tx_handlers_drop;
779 struct dentry *tx_handlers_queued;
780 struct dentry *tx_handlers_drop_unencrypted;
781 struct dentry *tx_handlers_drop_fragment;
782 struct dentry *tx_handlers_drop_wep;
783 struct dentry *tx_handlers_drop_not_assoc;
784 struct dentry *tx_handlers_drop_unauth_port;
785 struct dentry *rx_handlers_drop;
786 struct dentry *rx_handlers_queued;
787 struct dentry *rx_handlers_drop_nullfunc;
788 struct dentry *rx_handlers_drop_defrag;
789 struct dentry *rx_handlers_drop_short;
790 struct dentry *rx_handlers_drop_passive_scan;
791 struct dentry *tx_expand_skb_head;
792 struct dentry *tx_expand_skb_head_cloned;
793 struct dentry *rx_expand_skb_head;
794 struct dentry *rx_expand_skb_head2;
795 struct dentry *rx_handlers_fragments;
796 struct dentry *tx_status_drop;
Jiri Bence9f207f2007-05-05 11:46:38 -0700797#endif
798 struct dentry *dot11ACKFailureCount;
799 struct dentry *dot11RTSFailureCount;
800 struct dentry *dot11FCSErrorCount;
801 struct dentry *dot11RTSSuccessCount;
802 } stats;
803 struct dentry *stations;
804 struct dentry *keys;
805 } debugfs;
806#endif
Jiri Bencf0706e82007-05-05 11:45:53 -0700807};
808
Johannes Berg3e122be2008-07-09 14:40:34 +0200809static inline struct ieee80211_sub_if_data *
810IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
811{
812 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
813
814 BUG_ON(!local || local->mdev == dev);
815
816 return netdev_priv(dev);
817}
818
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +0200819/* this struct represents 802.11n's RA/TID combination */
820struct ieee80211_ra_tid {
821 u8 ra[ETH_ALEN];
822 u16 tid;
823};
824
Luis Carlos Coboee385852008-02-23 15:17:11 +0100825/* Parsed Information Elements */
826struct ieee802_11_elems {
Jouni Malinen43ac2ca2008-08-15 22:21:27 +0300827 u8 *ie_start;
828 size_t total_len;
829
Luis Carlos Coboee385852008-02-23 15:17:11 +0100830 /* pointers to IEs */
831 u8 *ssid;
832 u8 *supp_rates;
833 u8 *fh_params;
834 u8 *ds_params;
835 u8 *cf_params;
Johannes Berge7ec86f2009-04-18 17:33:24 +0200836 struct ieee80211_tim_ie *tim;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100837 u8 *ibss_params;
838 u8 *challenge;
839 u8 *wpa;
840 u8 *rsn;
841 u8 *erp_info;
842 u8 *ext_supp_rates;
843 u8 *wmm_info;
844 u8 *wmm_param;
Johannes Berg09914812008-10-07 19:31:17 +0200845 struct ieee80211_ht_cap *ht_cap_elem;
Johannes Bergd9fe60d2008-10-09 12:13:49 +0200846 struct ieee80211_ht_info *ht_info_elem;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100847 u8 *mesh_config;
848 u8 *mesh_id;
849 u8 *peer_link;
850 u8 *preq;
851 u8 *prep;
852 u8 *perr;
Assaf Kraussf2df3852008-06-15 18:23:29 +0300853 u8 *ch_switch_elem;
854 u8 *country_elem;
855 u8 *pwr_constr_elem;
856 u8 *quiet_elem; /* first quite element */
Jouni Malinenf797eb72009-01-19 18:48:46 +0200857 u8 *timeout_int;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100858
859 /* length of them, respectively */
860 u8 ssid_len;
861 u8 supp_rates_len;
862 u8 fh_params_len;
863 u8 ds_params_len;
864 u8 cf_params_len;
865 u8 tim_len;
866 u8 ibss_params_len;
867 u8 challenge_len;
868 u8 wpa_len;
869 u8 rsn_len;
870 u8 erp_info_len;
871 u8 ext_supp_rates_len;
872 u8 wmm_info_len;
873 u8 wmm_param_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100874 u8 mesh_config_len;
875 u8 mesh_id_len;
876 u8 peer_link_len;
877 u8 preq_len;
878 u8 prep_len;
879 u8 perr_len;
Assaf Kraussf2df3852008-06-15 18:23:29 +0300880 u8 ch_switch_elem_len;
881 u8 country_elem_len;
882 u8 pwr_constr_elem_len;
883 u8 quiet_elem_len;
884 u8 num_of_quiet_elem; /* can be more the one */
Jouni Malinenf797eb72009-01-19 18:48:46 +0200885 u8 timeout_int_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100886};
887
Jiri Bencf0706e82007-05-05 11:45:53 -0700888static inline struct ieee80211_local *hw_to_local(
889 struct ieee80211_hw *hw)
890{
891 return container_of(hw, struct ieee80211_local, hw);
892}
893
894static inline struct ieee80211_hw *local_to_hw(
895 struct ieee80211_local *local)
896{
897 return &local->hw;
898}
899
Jiri Bencf0706e82007-05-05 11:45:53 -0700900
Johannes Berg571ecf62007-07-27 15:43:22 +0200901static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
902{
903 return compare_ether_addr(raddr, addr) == 0 ||
904 is_broadcast_ether_addr(raddr);
905}
906
907
Johannes Berge8975582008-10-09 12:18:51 +0200908int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
Johannes Berg9d139c82008-07-09 14:40:37 +0200909int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
Johannes Berg5cf121c2008-02-25 16:27:43 +0100910void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200911void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
912 u32 changed);
Johannes Berg0d143fe2008-09-11 00:01:59 +0200913void ieee80211_configure_filter(struct ieee80211_local *local);
Johannes Berg46900292009-02-15 12:44:28 +0100914u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
Jiri Bencf0706e82007-05-05 11:45:53 -0700915
Johannes Berg9c6bd792008-09-11 00:01:52 +0200916/* wireless extensions */
Jiri Bencf0706e82007-05-05 11:45:53 -0700917extern const struct iw_handler_def ieee80211_iw_handler_def;
David S. Miller65b53e4c2008-06-10 02:22:26 -0700918
Johannes Berg46900292009-02-15 12:44:28 +0100919/* STA code */
Johannes Berg9c6bd792008-09-11 00:01:52 +0200920void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
Johannes Berg46900292009-02-15 12:44:28 +0100921ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
922 struct sk_buff *skb,
923 struct ieee80211_rx_status *rx_status);
Alina Friedrichsen79f64402009-02-21 01:27:29 +0100924int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200925int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
926int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
927int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
Johannes Berg46900292009-02-15 12:44:28 +0100928void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200929int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
930int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
Kalle Valo572e0012009-02-10 17:09:31 +0200931void ieee80211_send_pspoll(struct ieee80211_local *local,
932 struct ieee80211_sub_if_data *sdata);
Johannes Berg10f644a2009-04-16 13:17:25 +0200933void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
934int ieee80211_max_network_latency(struct notifier_block *nb,
935 unsigned long data, void *dummy);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200936
Johannes Berg46900292009-02-15 12:44:28 +0100937/* IBSS code */
Johannes Berg46900292009-02-15 12:44:28 +0100938void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
939void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
940ieee80211_rx_result
941ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
942 struct ieee80211_rx_status *rx_status);
943struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
944 u8 *bssid, u8 *addr, u32 supp_rates);
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200945int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
946 struct cfg80211_ibss_params *params);
947int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
Johannes Berg46900292009-02-15 12:44:28 +0100948
Johannes Berg9c6bd792008-09-11 00:01:52 +0200949/* scan/BSS handling */
Johannes Berg46900292009-02-15 12:44:28 +0100950void ieee80211_scan_work(struct work_struct *work);
Johannes Bergf3b85252009-04-23 16:01:47 +0200951int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
952 const u8 *ssid, u8 ssid_len);
Johannes Bergc2b13452008-09-11 00:01:55 +0200953int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
Johannes Berg2a519312009-02-10 21:25:55 +0100954 struct cfg80211_scan_request *req);
Johannes Bergc2b13452008-09-11 00:01:55 +0200955int ieee80211_scan_results(struct ieee80211_local *local,
956 struct iw_request_info *info,
957 char *buf, size_t len);
958ieee80211_rx_result
959ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata,
960 struct sk_buff *skb,
961 struct ieee80211_rx_status *rx_status);
Johannes Bergc2b13452008-09-11 00:01:55 +0200962int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
Jouni Malinen636a5d32009-03-19 13:39:22 +0200963 const char *ie, size_t len);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200964
Johannes Berg0a51b272008-09-08 17:44:25 +0200965void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
Johannes Bergc2b13452008-09-11 00:01:55 +0200966struct ieee80211_bss *
Johannes Berg98c8fcc2008-09-08 17:44:26 +0200967ieee80211_bss_info_update(struct ieee80211_local *local,
968 struct ieee80211_rx_status *rx_status,
969 struct ieee80211_mgmt *mgmt,
970 size_t len,
971 struct ieee802_11_elems *elems,
Johannes Berg2a519312009-02-10 21:25:55 +0100972 struct ieee80211_channel *channel,
973 bool beacon);
Johannes Bergc2b13452008-09-11 00:01:55 +0200974struct ieee80211_bss *
Johannes Berg5484e232008-09-08 17:44:27 +0200975ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
976 u8 *ssid, u8 ssid_len);
Johannes Berg98c8fcc2008-09-08 17:44:26 +0200977void ieee80211_rx_bss_put(struct ieee80211_local *local,
Johannes Bergc2b13452008-09-11 00:01:55 +0200978 struct ieee80211_bss *bss);
Vasanthakumar Thiagarajan7a947082009-02-04 18:28:48 +0530979void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid,
980 int freq, u8 *ssid, u8 ssid_len);
Luis Carlos Coboee385852008-02-23 15:17:11 +0100981
Johannes Berg3e122be2008-07-09 14:40:34 +0200982/* interface handling */
983int ieee80211_if_add(struct ieee80211_local *local, const char *name,
Johannes Berg05c914f2008-09-11 00:01:58 +0200984 struct net_device **new_dev, enum nl80211_iftype type,
Luis Carlos Coboee385852008-02-23 15:17:11 +0100985 struct vif_params *params);
Johannes Bergf3947e22008-07-09 14:40:36 +0200986int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
Johannes Berg05c914f2008-09-11 00:01:58 +0200987 enum nl80211_iftype type);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200988void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
Johannes Berg75636522008-07-09 14:40:35 +0200989void ieee80211_remove_interfaces(struct ieee80211_local *local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700990
Johannes Berge2ebc742007-07-27 15:43:22 +0200991/* tx handling */
Johannes Berge2ebc742007-07-27 15:43:22 +0200992void ieee80211_clear_tx_pending(struct ieee80211_local *local);
993void ieee80211_tx_pending(unsigned long data);
994int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
995int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
996int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
Johannes Berge2ebc742007-07-27 15:43:22 +0200997
Johannes Bergde1ede72008-09-09 14:42:50 +0200998/* HT */
Johannes Bergae5eb022008-10-14 16:58:37 +0200999void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1000 struct ieee80211_ht_cap *ht_cap_ie,
Johannes Bergd9fe60d2008-10-09 12:13:49 +02001001 struct ieee80211_sta_ht_cap *ht_cap);
Johannes Bergde1ede72008-09-09 14:42:50 +02001002void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
Johannes Bergb8695a82009-02-10 21:25:46 +01001003void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1004 const u8 *da, u16 tid,
1005 u16 initiator, u16 reason_code);
Johannes Bergde1ede72008-09-09 14:42:50 +02001006
1007void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1008 u16 tid, u16 initiator, u16 reason);
Johannes Berg849b7962009-02-10 21:25:54 +01001009void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1010 u16 initiator, u16 reason);
Johannes Berg2dace102009-02-10 21:25:52 +01001011void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
Johannes Bergde1ede72008-09-09 14:42:50 +02001012void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1013 struct sta_info *sta,
1014 struct ieee80211_mgmt *mgmt, size_t len);
1015void ieee80211_process_addba_resp(struct ieee80211_local *local,
1016 struct sta_info *sta,
1017 struct ieee80211_mgmt *mgmt,
1018 size_t len);
1019void ieee80211_process_addba_request(struct ieee80211_local *local,
1020 struct sta_info *sta,
1021 struct ieee80211_mgmt *mgmt,
1022 size_t len);
1023
Johannes Berg849b7962009-02-10 21:25:54 +01001024int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1025 enum ieee80211_back_parties initiator);
1026
Johannes Berg39192c02008-09-09 14:49:03 +02001027/* Spectrum management */
1028void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1029 struct ieee80211_mgmt *mgmt,
1030 size_t len);
Sujithc481ec92009-01-06 09:28:37 +05301031void ieee80211_chswitch_timer(unsigned long data);
1032void ieee80211_chswitch_work(struct work_struct *work);
1033void ieee80211_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1034 struct ieee80211_channel_sw_ie *sw_elem,
1035 struct ieee80211_bss *bss);
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +05301036void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1037 u16 capab_info, u8 *pwr_constr_elem,
1038 u8 pwr_constr_elem_len);
Johannes Berg39192c02008-09-09 14:49:03 +02001039
Johannes Bergf2753dd2009-04-14 10:09:24 +02001040/* Suspend/resume and hw reconfiguration */
1041int ieee80211_reconfig(struct ieee80211_local *local);
1042
Johannes Berg827b1fb2009-03-13 11:44:18 +01001043#ifdef CONFIG_PM
Bob Copeland665af4f2009-01-19 11:20:53 -05001044int __ieee80211_suspend(struct ieee80211_hw *hw);
Johannes Bergf2753dd2009-04-14 10:09:24 +02001045
1046static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1047{
1048 return ieee80211_reconfig(hw_to_local(hw));
1049}
Johannes Berg827b1fb2009-03-13 11:44:18 +01001050#else
1051static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1052{
1053 return 0;
1054}
Johannes Bergf2753dd2009-04-14 10:09:24 +02001055
Johannes Berg827b1fb2009-03-13 11:44:18 +01001056static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1057{
1058 return 0;
1059}
1060#endif
Bob Copeland665af4f2009-01-19 11:20:53 -05001061
Johannes Bergc2d15602007-07-27 15:43:23 +02001062/* utility functions/constants */
1063extern void *mac80211_wiphy_privid; /* for wiphy privid */
1064extern const unsigned char rfc1042_header[6];
1065extern const unsigned char bridge_tunnel_header[6];
Ron Rindjunsky71364712007-12-25 17:00:36 +02001066u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
Johannes Berg05c914f2008-09-11 00:01:58 +02001067 enum nl80211_iftype type);
Johannes Bergc2d15602007-07-27 15:43:23 +02001068int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1069 int rate, int erp, int short_preamble);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +12001070void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
Jouni Malinena3b8b052009-03-27 21:59:49 +02001071 struct ieee80211_hdr *hdr, const u8 *tsc);
Johannes Berg5825fe102008-09-09 12:56:01 +02001072void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
Johannes Berge50db652008-09-09 15:07:09 +02001073void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1074 int encrypt);
Johannes Berg9c6bd792008-09-11 00:01:52 +02001075void ieee802_11_parse_elems(u8 *start, size_t len,
1076 struct ieee802_11_elems *elems);
Johannes Bergd91f36d2009-04-16 13:17:26 +02001077u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1078 struct ieee802_11_elems *elems,
1079 u64 filter, u32 crc);
Johannes Berge16751c2008-09-11 00:01:53 +02001080int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
Johannes Berg881d9482009-01-21 15:13:48 +01001081u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
Johannes Berg96dd22a2008-09-11 00:01:57 +02001082 enum ieee80211_band band);
Jiri Bencf0706e82007-05-05 11:45:53 -07001083
Kalle Valo520eb822008-12-18 23:35:27 +02001084void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1085void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1086void ieee80211_dynamic_ps_timer(unsigned long data);
Vivek Natarajana97b77b2008-12-23 18:39:02 -08001087void ieee80211_send_nullfunc(struct ieee80211_local *local,
1088 struct ieee80211_sub_if_data *sdata,
1089 int powersave);
Kalle Valo3cf335d2009-03-22 21:57:06 +02001090void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1091 struct ieee80211_hdr *hdr);
Kalle Valo04de8382009-03-22 21:57:35 +02001092void ieee80211_beacon_loss_work(struct work_struct *work);
Kalle Valo520eb822008-12-18 23:35:27 +02001093
Kalle Valoce7c9112008-12-18 23:35:20 +02001094void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1095 enum queue_stop_reason reason);
1096void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1097 enum queue_stop_reason reason);
Johannes Berg96f5e662009-02-12 00:51:53 +01001098void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1099 enum queue_stop_reason reason);
1100void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1101 enum queue_stop_reason reason);
Kalle Valoce7c9112008-12-18 23:35:20 +02001102
Johannes Berg46900292009-02-15 12:44:28 +01001103void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1104 u16 transaction, u16 auth_alg,
1105 u8 *extra, size_t extra_len,
1106 const u8 *bssid, int encrypt);
Johannes Bergde95a542009-04-01 11:58:36 +02001107int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1108 const u8 *ie, size_t ie_len);
Johannes Berg46900292009-02-15 12:44:28 +01001109void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
Johannes Bergde95a542009-04-01 11:58:36 +02001110 const u8 *ssid, size_t ssid_len,
1111 const u8 *ie, size_t ie_len);
Johannes Berg46900292009-02-15 12:44:28 +01001112
1113void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1114 const size_t supp_rates_len,
1115 const u8 *supp_rates);
1116u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1117 struct ieee802_11_elems *elems,
1118 enum ieee80211_band band);
1119
Johannes Bergf4ea83d2008-06-30 15:10:46 +02001120#ifdef CONFIG_MAC80211_NOINLINE
Johannes Bergd9e8a702008-06-30 15:10:44 +02001121#define debug_noinline noinline
1122#else
1123#define debug_noinline
1124#endif
1125
Jiri Bencf0706e82007-05-05 11:45:53 -07001126#endif /* IEEE80211_I_H */