blob: 055bb776408cb90a93c6e73936706e04a8a71ef3 [file] [log] [blame]
Jiri Bencf0706e82007-05-05 11:45:53 -07001/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
Johannes Berge039fa42008-05-15 12:55:29 +02005 * Copyright 2007-2008 Johannes Berg <johannes@sipsolutions.net>
Jiri Bencf0706e82007-05-05 11:45:53 -07006 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#ifndef IEEE80211_I_H
13#define IEEE80211_I_H
14
15#include <linux/kernel.h>
16#include <linux/device.h>
17#include <linux/if_ether.h>
18#include <linux/interrupt.h>
19#include <linux/list.h>
20#include <linux/netdevice.h>
21#include <linux/skbuff.h>
22#include <linux/workqueue.h>
23#include <linux/types.h>
24#include <linux/spinlock.h>
Johannes Berg571ecf62007-07-27 15:43:22 +020025#include <linux/etherdevice.h>
colin@cozybit.com93da9cc2008-10-21 12:03:48 -070026#include <net/cfg80211.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070027#include <net/wireless.h>
David S. Millerccc58052008-06-16 18:50:49 -070028#include <net/iw_handler.h>
David S. Miller51cb6db2008-07-15 03:34:57 -070029#include <net/mac80211.h>
Johannes Berg2c8dccc2008-04-08 15:14:40 -040030#include "key.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070031#include "sta_info.h"
32
Johannes Berg9cfb0002008-04-03 15:17:31 +020033struct ieee80211_local;
Jiri Bencf0706e82007-05-05 11:45:53 -070034
35/* Maximum number of broadcast/multicast frames to buffer when some of the
36 * associated stations are using power saving. */
37#define AP_MAX_BC_BUFFER 128
38
39/* Maximum number of frames buffered to all STAs, including multicast frames.
40 * Note: increasing this limit increases the potential memory requirement. Each
41 * frame can be up to about 2 kB long. */
42#define TOTAL_MAX_TX_BUFFER 512
43
44/* Required encryption head and tailroom */
45#define IEEE80211_ENCRYPT_HEADROOM 8
Jouni Malinen765cb462009-01-08 13:32:01 +020046#define IEEE80211_ENCRYPT_TAILROOM 18
Jiri Bencf0706e82007-05-05 11:45:53 -070047
48/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
49 * reception of at least three fragmented frames. This limit can be increased
50 * by changing this define, at the cost of slower frame reassembly and
51 * increased memory use (about 2 kB of RAM per entry). */
52#define IEEE80211_FRAGMENT_MAX 4
53
Johannes Berg0a51b272008-09-08 17:44:25 +020054/*
55 * Time after which we ignore scan results and no longer report/use
56 * them in any way.
57 */
58#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
59
Johannes Berg20ad19d2009-02-10 21:25:45 +010060#define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
61
Jiri Bencf0706e82007-05-05 11:45:53 -070062struct ieee80211_fragment_entry {
63 unsigned long first_frag_time;
64 unsigned int seq;
65 unsigned int rx_queue;
66 unsigned int last_frag;
67 unsigned int extra_len;
68 struct sk_buff_head skb_list;
69 int ccmp; /* Whether fragments were encrypted with CCMP */
70 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
71};
72
73
Johannes Bergc2b13452008-09-11 00:01:55 +020074struct ieee80211_bss {
Johannes Berg00d3f142009-02-10 21:26:00 +010075 /* Yes, this is a hack */
76 struct cfg80211_bss cbss;
77
78 /* don't want to look up all the time */
Johannes Berg056cdd52008-03-26 23:21:47 +010079 size_t ssid_len;
Jiri Bencf0706e82007-05-05 11:45:53 -070080 u8 ssid[IEEE80211_MAX_SSID_LEN];
Johannes Berg00d3f142009-02-10 21:26:00 +010081
Emmanuel Grumbach98f7dfd2008-07-18 13:52:59 +080082 u8 dtim_period;
Johannes Berg00d3f142009-02-10 21:26:00 +010083
Jouni Malinen43ac2ca2008-08-15 22:21:27 +030084 bool wmm_used;
Johannes Berg00d3f142009-02-10 21:26:00 +010085
86 unsigned long last_probe_resp;
87
Luis Carlos Coboee385852008-02-23 15:17:11 +010088#ifdef CONFIG_MAC80211_MESH
89 u8 *mesh_id;
90 size_t mesh_id_len;
John W. Linville24736702008-04-08 14:15:46 -040091 u8 *mesh_cfg;
Johannes Berg902acc72008-02-23 15:17:19 +010092#endif
Johannes Berg00d3f142009-02-10 21:26:00 +010093
Jiri Bencf0706e82007-05-05 11:45:53 -070094#define IEEE80211_MAX_SUPP_RATES 32
95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
96 size_t supp_rates_len;
Jiri Bencf0706e82007-05-05 11:45:53 -070097
Johannes Berg00d3f142009-02-10 21:26:00 +010098 /*
99 * During assocation, we save an ERP value from a probe response so
Daniel Drake56282212007-07-10 19:32:10 +0200100 * that we can feed ERP info to the driver when handling the
101 * association completes. these fields probably won't be up-to-date
Johannes Berg00d3f142009-02-10 21:26:00 +0100102 * otherwise, you probably don't want to use them.
103 */
104 bool has_erp_value;
Daniel Drake56282212007-07-10 19:32:10 +0200105 u8 erp_value;
Jiri Bencf0706e82007-05-05 11:45:53 -0700106};
107
Johannes Bergc2b13452008-09-11 00:01:55 +0200108static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100109{
110#ifdef CONFIG_MAC80211_MESH
111 return bss->mesh_cfg;
112#endif
113 return NULL;
114}
115
Johannes Bergc2b13452008-09-11 00:01:55 +0200116static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100117{
118#ifdef CONFIG_MAC80211_MESH
119 return bss->mesh_id;
120#endif
121 return NULL;
122}
123
Johannes Bergc2b13452008-09-11 00:01:55 +0200124static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
Johannes Berg902acc72008-02-23 15:17:19 +0100125{
126#ifdef CONFIG_MAC80211_MESH
127 return bss->mesh_id_len;
128#endif
129 return 0;
130}
131
Jiri Bencf0706e82007-05-05 11:45:53 -0700132
Johannes Berg9ae54c82008-01-31 19:48:20 +0100133typedef unsigned __bitwise__ ieee80211_tx_result;
134#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
135#define TX_DROP ((__force ieee80211_tx_result) 1u)
136#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
137
Johannes Berg5cf121c2008-02-25 16:27:43 +0100138#define IEEE80211_TX_FRAGMENTED BIT(0)
139#define IEEE80211_TX_UNICAST BIT(1)
140#define IEEE80211_TX_PS_BUFFERED BIT(2)
Johannes Berg9ae54c82008-01-31 19:48:20 +0100141
Johannes Berg5cf121c2008-02-25 16:27:43 +0100142struct ieee80211_tx_data {
Jiri Bencf0706e82007-05-05 11:45:53 -0700143 struct sk_buff *skb;
144 struct net_device *dev;
145 struct ieee80211_local *local;
146 struct ieee80211_sub_if_data *sdata;
147 struct sta_info *sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700148 struct ieee80211_key *key;
Jiri Bencf0706e82007-05-05 11:45:53 -0700149
Johannes Berg5cf121c2008-02-25 16:27:43 +0100150 struct ieee80211_channel *channel;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100151
152 /* Extra fragments (in addition to the first fragment
153 * in skb) */
Johannes Berg5cf121c2008-02-25 16:27:43 +0100154 struct sk_buff **extra_frag;
Johannes Berg056cdd52008-03-26 23:21:47 +0100155 int num_extra_frag;
156
Harvey Harrisona4b7d7b2008-07-15 18:44:14 -0700157 u16 ethertype;
Johannes Berg056cdd52008-03-26 23:21:47 +0100158 unsigned int flags;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100159};
160
161
162typedef unsigned __bitwise__ ieee80211_rx_result;
163#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
164#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
165#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
166#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
167
168#define IEEE80211_RX_IN_SCAN BIT(0)
169/* frame is destined to interface currently processed (incl. multicast frames) */
170#define IEEE80211_RX_RA_MATCH BIT(1)
171#define IEEE80211_RX_AMSDU BIT(2)
172#define IEEE80211_RX_CMNTR_REPORTED BIT(3)
173#define IEEE80211_RX_FRAGMENTED BIT(4)
174
175struct ieee80211_rx_data {
176 struct sk_buff *skb;
177 struct net_device *dev;
178 struct ieee80211_local *local;
179 struct ieee80211_sub_if_data *sdata;
180 struct sta_info *sta;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100181 struct ieee80211_key *key;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100182 struct ieee80211_rx_status *status;
183 struct ieee80211_rate *rate;
Johannes Berg056cdd52008-03-26 23:21:47 +0100184
Johannes Berg056cdd52008-03-26 23:21:47 +0100185 unsigned int flags;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100186 int sent_ps_buffered;
187 int queue;
Johannes Berg5cf121c2008-02-25 16:27:43 +0100188 u32 tkip_iv32;
189 u16 tkip_iv16;
Jiri Bencf0706e82007-05-05 11:45:53 -0700190};
191
Jiri Bencf0706e82007-05-05 11:45:53 -0700192struct ieee80211_tx_stored_packet {
Jiri Bencf0706e82007-05-05 11:45:53 -0700193 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700194 struct sk_buff **extra_frag;
Johannes Berg056cdd52008-03-26 23:21:47 +0100195 int num_extra_frag;
Jiri Bencf0706e82007-05-05 11:45:53 -0700196};
197
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100198struct beacon_data {
199 u8 *head, *tail;
200 int head_len, tail_len;
201 int dtim_period;
202};
203
Jiri Bencf0706e82007-05-05 11:45:53 -0700204struct ieee80211_if_ap {
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100205 struct beacon_data *beacon;
Jiri Bencf0706e82007-05-05 11:45:53 -0700206
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400207 struct list_head vlans;
208
Jiri Bencf0706e82007-05-05 11:45:53 -0700209 /* yes, this looks ugly, but guarantees that we can later use
210 * bitmap_empty :)
Johannes Berg004c8722008-02-20 11:21:35 +0100211 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
Jiri Bencf0706e82007-05-05 11:45:53 -0700212 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
Jiri Bencf0706e82007-05-05 11:45:53 -0700213 struct sk_buff_head ps_bc_buf;
Johannes Berg056cdd52008-03-26 23:21:47 +0100214 atomic_t num_sta_ps; /* number of stations in PS mode */
Johannes Berg5dfdaf52007-12-19 02:03:33 +0100215 int dtim_count;
Jiri Bencf0706e82007-05-05 11:45:53 -0700216};
217
218struct ieee80211_if_wds {
Jiri Bencf0706e82007-05-05 11:45:53 -0700219 struct sta_info *sta;
Johannes Berg056cdd52008-03-26 23:21:47 +0100220 u8 remote_addr[ETH_ALEN];
Jiri Bencf0706e82007-05-05 11:45:53 -0700221};
222
223struct ieee80211_if_vlan {
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400224 struct list_head list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700225};
226
Luis Carlos Coboee385852008-02-23 15:17:11 +0100227struct mesh_stats {
228 __u32 fwded_frames; /* Mesh forwarded frames */
229 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
230 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
231 atomic_t estab_plinks;
232};
233
234#define PREQ_Q_F_START 0x1
235#define PREQ_Q_F_REFRESH 0x2
236struct mesh_preq_queue {
237 struct list_head list;
238 u8 dst[ETH_ALEN];
239 u8 flags;
240};
241
Johannes Berg46900292009-02-15 12:44:28 +0100242/* flags used in struct ieee80211_if_managed.flags */
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400243#define IEEE80211_STA_SSID_SET BIT(0)
244#define IEEE80211_STA_BSSID_SET BIT(1)
245#define IEEE80211_STA_PREV_BSSID_SET BIT(2)
246#define IEEE80211_STA_AUTHENTICATED BIT(3)
247#define IEEE80211_STA_ASSOCIATED BIT(4)
248#define IEEE80211_STA_PROBEREQ_POLL BIT(5)
249#define IEEE80211_STA_CREATE_IBSS BIT(6)
Johannes Berg7986cf92009-03-21 17:08:43 +0100250/* hole at 7, please re-use */
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400251#define IEEE80211_STA_WMM_ENABLED BIT(8)
Johannes Berg7986cf92009-03-21 17:08:43 +0100252/* hole at 9, please re-use */
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400253#define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
254#define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
255#define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
Johannes Berg5b98b1f2007-11-03 13:11:10 +0000256#define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
Vasanthakumar Thiagarajaneb469362008-12-23 21:30:50 +0530257#define IEEE80211_STA_TKIP_WEP_USED BIT(14)
Sujithc481ec92009-01-06 09:28:37 +0530258#define IEEE80211_STA_CSA_RECEIVED BIT(15)
Jouni Malinen5394af42009-01-08 13:31:59 +0200259#define IEEE80211_STA_MFP_ENABLED BIT(16)
Jouni Malinen636a5d32009-03-19 13:39:22 +0200260#define IEEE80211_STA_EXT_SME BIT(17)
Johannes Bergccd7b362008-09-11 00:01:56 +0200261/* flags for MLME request */
Tomas Winkler48c2fc52008-08-06 14:22:01 +0300262#define IEEE80211_STA_REQ_SCAN 0
Ron Rindjunsky9859b812008-08-09 03:02:19 +0300263#define IEEE80211_STA_REQ_DIRECT_PROBE 1
264#define IEEE80211_STA_REQ_AUTH 2
265#define IEEE80211_STA_REQ_RUN 3
Tomas Winkler48c2fc52008-08-06 14:22:01 +0300266
Tomas Winkler48c2fc52008-08-06 14:22:01 +0300267/* bitfield of allowed auth algs */
268#define IEEE80211_AUTH_ALG_OPEN BIT(0)
269#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
270#define IEEE80211_AUTH_ALG_LEAP BIT(2)
Jouni Malinen636a5d32009-03-19 13:39:22 +0200271#define IEEE80211_AUTH_ALG_FT BIT(3)
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;
Sujithc481ec92009-01-06 09:28:37 +0530275 struct timer_list chswitch_timer;
Johannes Berg056cdd52008-03-26 23:21:47 +0100276 struct work_struct work;
Sujithc481ec92009-01-06 09:28:37 +0530277 struct work_struct chswitch_work;
Johannes Berg46900292009-02-15 12:44:28 +0100278
Johannes Berg056cdd52008-03-26 23:21:47 +0100279 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
Johannes Berg46900292009-02-15 12:44:28 +0100280
Johannes Berg056cdd52008-03-26 23:21:47 +0100281 u8 ssid[IEEE80211_MAX_SSID_LEN];
Jiri Bencf0706e82007-05-05 11:45:53 -0700282 size_t ssid_len;
Johannes Berg46900292009-02-15 12:44:28 +0100283
284 enum {
285 IEEE80211_STA_MLME_DISABLED,
286 IEEE80211_STA_MLME_DIRECT_PROBE,
287 IEEE80211_STA_MLME_AUTHENTICATE,
288 IEEE80211_STA_MLME_ASSOCIATE,
289 IEEE80211_STA_MLME_ASSOCIATED,
290 } state;
291
Jiri Bencf0706e82007-05-05 11:45:53 -0700292 u16 aid;
293 u16 ap_capab, capab;
294 u8 *extra_ie; /* to be added to the end of AssocReq */
295 size_t extra_ie_len;
296
297 /* The last AssocReq/Resp IEs */
298 u8 *assocreq_ies, *assocresp_ies;
299 size_t assocreq_ies_len, assocresp_ies_len;
300
Johannes Berg056cdd52008-03-26 23:21:47 +0100301 struct sk_buff_head skb_queue;
302
Ron Rindjunsky6042a3e2008-08-08 01:50:46 +0300303 int assoc_scan_tries; /* number of scans done pre-association */
Ron Rindjunsky9859b812008-08-09 03:02:19 +0300304 int direct_probe_tries; /* retries for direct probes */
Ron Rindjunsky6042a3e2008-08-08 01:50:46 +0300305 int auth_tries; /* retries for auth req */
306 int assoc_tries; /* retries for assoc req */
Jiri Bencf0706e82007-05-05 11:45:53 -0700307
Johannes Berg056cdd52008-03-26 23:21:47 +0100308 unsigned long request;
309
310 unsigned long last_probe;
311
Jiri Slabyd6f2da52007-08-28 17:01:54 -0400312 unsigned int flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700313
Jiri Bencf0706e82007-05-05 11:45:53 -0700314 unsigned int auth_algs; /* bitfield of allowed auth algs */
315 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
316 int auth_transaction;
317
Jouni Malinenfdfacf02009-01-08 13:32:05 +0200318 enum {
319 IEEE80211_MFP_DISABLED,
320 IEEE80211_MFP_OPTIONAL,
321 IEEE80211_MFP_REQUIRED
322 } mfp; /* management frame protection */
323
Jiri Bencf0706e82007-05-05 11:45:53 -0700324 int wmm_last_param_set;
Jouni Malinen9aed3cc2009-01-13 16:03:29 +0200325
326 /* Extra IE data for management frames */
Jouni Malinen636a5d32009-03-19 13:39:22 +0200327 u8 *sme_auth_ie;
328 size_t sme_auth_ie_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700329};
330
Johannes Berg46900292009-02-15 12:44:28 +0100331enum ieee80211_ibss_flags {
332 IEEE80211_IBSS_AUTO_CHANNEL_SEL = BIT(0),
333 IEEE80211_IBSS_AUTO_BSSID_SEL = BIT(1),
334 IEEE80211_IBSS_BSSID_SET = BIT(2),
335 IEEE80211_IBSS_PREV_BSSID_SET = BIT(3),
336 IEEE80211_IBSS_SSID_SET = BIT(4),
337};
338
339enum ieee80211_ibss_request {
340 IEEE80211_IBSS_REQ_RUN = 0,
341};
342
343struct ieee80211_if_ibss {
344 struct timer_list timer;
345 struct work_struct work;
346
347 struct sk_buff_head skb_queue;
348
349 u8 ssid[IEEE80211_MAX_SSID_LEN];
350 u8 ssid_len;
351
352 u32 flags;
353
354 u8 bssid[ETH_ALEN];
355
356 unsigned long request;
357
358 unsigned long ibss_join_req;
359 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
360
361 enum {
362 IEEE80211_IBSS_MLME_SEARCH,
363 IEEE80211_IBSS_MLME_JOINED,
364 } state;
365};
366
Johannes Berg472dbc42008-09-11 00:01:49 +0200367struct ieee80211_if_mesh {
368 struct work_struct work;
369 struct timer_list housekeeping_timer;
370 struct timer_list mesh_path_timer;
371 struct sk_buff_head skb_queue;
372
373 bool housekeeping;
374
375 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
376 size_t mesh_id_len;
377 /* Active Path Selection Protocol Identifier */
378 u8 mesh_pp_id[4];
379 /* Active Path Selection Metric Identifier */
380 u8 mesh_pm_id[4];
381 /* Congestion Control Mode Identifier */
382 u8 mesh_cc_id[4];
383 /* Local mesh Destination Sequence Number */
384 u32 dsn;
385 /* Last used PREQ ID */
386 u32 preq_id;
387 atomic_t mpaths;
388 /* Timestamp of last DSN update */
389 unsigned long last_dsn_update;
390 /* Timestamp of last DSN sent */
391 unsigned long last_preq;
392 struct mesh_rmc *rmc;
393 spinlock_t mesh_preq_queue_lock;
394 struct mesh_preq_queue preq_queue;
395 int preq_queue_len;
396 struct mesh_stats mshstats;
397 struct mesh_config mshcfg;
398 u32 mesh_seqnum;
399 bool accepting_plinks;
Johannes Berg472dbc42008-09-11 00:01:49 +0200400};
Johannes Berg902acc72008-02-23 15:17:19 +0100401
402#ifdef CONFIG_MAC80211_MESH
Johannes Berg472dbc42008-09-11 00:01:49 +0200403#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
404 do { (msh)->mshstats.name++; } while (0)
Johannes Berg902acc72008-02-23 15:17:19 +0100405#else
Johannes Berg472dbc42008-09-11 00:01:49 +0200406#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
Johannes Berg902acc72008-02-23 15:17:19 +0100407 do { } while (0)
408#endif
Jiri Bencf0706e82007-05-05 11:45:53 -0700409
Johannes Berg213cd112008-09-11 00:01:54 +0200410/**
411 * enum ieee80211_sub_if_data_flags - virtual interface flags
412 *
413 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
414 * @IEEE80211_SDATA_PROMISC: interface is promisc
Johannes Berg213cd112008-09-11 00:01:54 +0200415 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
416 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
417 * associated stations and deliver multicast frames both
418 * back to wireless media and to the local net stack.
419 */
420enum ieee80211_sub_if_data_flags {
421 IEEE80211_SDATA_ALLMULTI = BIT(0),
422 IEEE80211_SDATA_PROMISC = BIT(1),
Johannes Berg7986cf92009-03-21 17:08:43 +0100423 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
424 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
Johannes Berg213cd112008-09-11 00:01:54 +0200425};
426
Jiri Bencf0706e82007-05-05 11:45:53 -0700427struct ieee80211_sub_if_data {
428 struct list_head list;
Jiri Bencf0706e82007-05-05 11:45:53 -0700429
430 struct wireless_dev wdev;
431
Johannes Berg11a843b2007-08-28 17:01:55 -0400432 /* keys */
433 struct list_head key_list;
434
Jiri Bencf0706e82007-05-05 11:45:53 -0700435 struct net_device *dev;
436 struct ieee80211_local *local;
437
Jiri Slaby13262ff2007-08-28 17:01:54 -0400438 unsigned int flags;
Daniel Drake7e9ed182007-07-27 15:43:24 +0200439
Jiri Bencf0706e82007-05-05 11:45:53 -0700440 int drop_unencrypted;
Jiri Bencf0706e82007-05-05 11:45:53 -0700441
Jiri Bencf0706e82007-05-05 11:45:53 -0700442 /* Fragment table for host-based reassembly */
443 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
444 unsigned int fragment_next;
445
446#define NUM_DEFAULT_KEYS 4
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200447#define NUM_DEFAULT_MGMT_KEYS 2
448 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
Jiri Bencf0706e82007-05-05 11:45:53 -0700449 struct ieee80211_key *default_key;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200450 struct ieee80211_key *default_mgmt_key;
Jiri Bencf0706e82007-05-05 11:45:53 -0700451
Johannes Berg94778282008-10-10 13:21:59 +0200452 u16 sequence_number;
453
Johannes Berg3e122be2008-07-09 14:40:34 +0200454 /*
455 * AP this belongs to: self in AP mode and
456 * corresponding AP in VLAN mode, NULL for
457 * all others (might be needed later in IBSS)
458 */
459 struct ieee80211_if_ap *bss;
460
461 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
462 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
Jiri Bencf0706e82007-05-05 11:45:53 -0700463
464 union {
465 struct ieee80211_if_ap ap;
466 struct ieee80211_if_wds wds;
467 struct ieee80211_if_vlan vlan;
Johannes Berg46900292009-02-15 12:44:28 +0100468 struct ieee80211_if_managed mgd;
469 struct ieee80211_if_ibss ibss;
Johannes Berg472dbc42008-09-11 00:01:49 +0200470#ifdef CONFIG_MAC80211_MESH
471 struct ieee80211_if_mesh mesh;
472#endif
Michael Wu8cc9a732008-01-31 19:48:23 +0100473 u32 mntr_flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700474 } u;
Jiri Bence9f207f2007-05-05 11:46:38 -0700475
476#ifdef CONFIG_MAC80211_DEBUGFS
477 struct dentry *debugfsdir;
478 union {
479 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700480 struct dentry *drop_unencrypted;
Jiri Bence9f207f2007-05-05 11:46:38 -0700481 struct dentry *state;
482 struct dentry *bssid;
483 struct dentry *prev_bssid;
484 struct dentry *ssid_len;
485 struct dentry *aid;
486 struct dentry *ap_capab;
487 struct dentry *capab;
488 struct dentry *extra_ie_len;
489 struct dentry *auth_tries;
490 struct dentry *assoc_tries;
491 struct dentry *auth_algs;
492 struct dentry *auth_alg;
493 struct dentry *auth_transaction;
494 struct dentry *flags;
Jouni Malinen93015f02008-08-25 11:57:06 +0300495 struct dentry *force_unicast_rateidx;
496 struct dentry *max_ratectrl_rateidx;
Jiri Bence9f207f2007-05-05 11:46:38 -0700497 } sta;
498 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700499 struct dentry *drop_unencrypted;
Jiri Bence9f207f2007-05-05 11:46:38 -0700500 struct dentry *num_sta_ps;
Jiri Bence9f207f2007-05-05 11:46:38 -0700501 struct dentry *dtim_count;
Jiri Bence9f207f2007-05-05 11:46:38 -0700502 struct dentry *force_unicast_rateidx;
503 struct dentry *max_ratectrl_rateidx;
504 struct dentry *num_buffered_multicast;
Jiri Bence9f207f2007-05-05 11:46:38 -0700505 } ap;
506 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700507 struct dentry *drop_unencrypted;
Jiri Bence9f207f2007-05-05 11:46:38 -0700508 struct dentry *peer;
Jouni Malinen93015f02008-08-25 11:57:06 +0300509 struct dentry *force_unicast_rateidx;
510 struct dentry *max_ratectrl_rateidx;
Jiri Bence9f207f2007-05-05 11:46:38 -0700511 } wds;
512 struct {
Jiri Bence9f207f2007-05-05 11:46:38 -0700513 struct dentry *drop_unencrypted;
Jouni Malinen93015f02008-08-25 11:57:06 +0300514 struct dentry *force_unicast_rateidx;
515 struct dentry *max_ratectrl_rateidx;
Jiri Bence9f207f2007-05-05 11:46:38 -0700516 } vlan;
517 struct {
518 struct dentry *mode;
519 } monitor;
Jiri Bence9f207f2007-05-05 11:46:38 -0700520 } debugfs;
Jouni Malinen2b58b202008-08-28 15:12:06 +0300521 struct {
522 struct dentry *default_key;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200523 struct dentry *default_mgmt_key;
Jouni Malinen2b58b202008-08-28 15:12:06 +0300524 } common_debugfs;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100525
526#ifdef CONFIG_MAC80211_MESH
527 struct dentry *mesh_stats_dir;
528 struct {
529 struct dentry *fwded_frames;
530 struct dentry *dropped_frames_ttl;
531 struct dentry *dropped_frames_no_route;
532 struct dentry *estab_plinks;
Johannes Berg902acc72008-02-23 15:17:19 +0100533 struct timer_list mesh_path_timer;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100534 } mesh_stats;
535
536 struct dentry *mesh_config_dir;
537 struct {
538 struct dentry *dot11MeshRetryTimeout;
539 struct dentry *dot11MeshConfirmTimeout;
540 struct dentry *dot11MeshHoldingTimeout;
541 struct dentry *dot11MeshMaxRetries;
542 struct dentry *dot11MeshTTL;
543 struct dentry *auto_open_plinks;
544 struct dentry *dot11MeshMaxPeerLinks;
545 struct dentry *dot11MeshHWMPactivePathTimeout;
546 struct dentry *dot11MeshHWMPpreqMinInterval;
547 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
548 struct dentry *dot11MeshHWMPmaxPREQretries;
549 struct dentry *path_refresh_time;
550 struct dentry *min_discovery_timeout;
551 } mesh_config;
552#endif
553
Jiri Bence9f207f2007-05-05 11:46:38 -0700554#endif
Johannes Berg32bfd352007-12-19 01:31:26 +0100555 /* must be last, dynamically sized area in this! */
556 struct ieee80211_vif vif;
Jiri Bencf0706e82007-05-05 11:45:53 -0700557};
558
Johannes Berg32bfd352007-12-19 01:31:26 +0100559static inline
560struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
561{
562 return container_of(p, struct ieee80211_sub_if_data, vif);
563}
564
Johannes Berg472dbc42008-09-11 00:01:49 +0200565static inline void
566ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
567 u8 mesh_id_len, u8 *mesh_id)
568{
569#ifdef CONFIG_MAC80211_MESH
570 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
571 ifmsh->mesh_id_len = mesh_id_len;
572 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
573#else
574 WARN_ON(1);
575#endif
576}
577
Jiri Bencf0706e82007-05-05 11:45:53 -0700578enum {
579 IEEE80211_RX_MSG = 1,
580 IEEE80211_TX_STATUS_MSG = 2,
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +0200581 IEEE80211_DELBA_MSG = 3,
582 IEEE80211_ADDBA_MSG = 4,
Jiri Bencf0706e82007-05-05 11:45:53 -0700583};
584
Kalle Valoce7c9112008-12-18 23:35:20 +0200585enum queue_stop_reason {
586 IEEE80211_QUEUE_STOP_REASON_DRIVER,
Kalle Valo520eb822008-12-18 23:35:27 +0200587 IEEE80211_QUEUE_STOP_REASON_PS,
Johannes Berg96f5e662009-02-12 00:51:53 +0100588 IEEE80211_QUEUE_STOP_REASON_CSA,
589 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
Johannes Berg25420602009-03-13 11:43:36 +0100590 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
Kalle Valoce7c9112008-12-18 23:35:20 +0200591};
592
Johannes Berg133b8222008-09-16 14:18:59 +0200593struct ieee80211_master_priv {
594 struct ieee80211_local *local;
595};
596
Jiri Bencf0706e82007-05-05 11:45:53 -0700597struct ieee80211_local {
598 /* embed the driver visible part.
599 * don't cast (use the static inlines below), but we keep
600 * it first anyway so they become a no-op */
601 struct ieee80211_hw hw;
602
603 const struct ieee80211_ops *ops;
604
Johannes Berg96f5e662009-02-12 00:51:53 +0100605 /* AC queue corresponding to each AMPDU queue */
606 s8 ampdu_ac_queue[IEEE80211_MAX_AMPDU_QUEUES];
607 unsigned int amdpu_ac_stop_refcnt[IEEE80211_MAX_AMPDU_QUEUES];
608
609 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES +
610 IEEE80211_MAX_AMPDU_QUEUES];
611 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
Kalle Valoce7c9112008-12-18 23:35:20 +0200612 spinlock_t queue_stop_reason_lock;
Johannes Berg96f5e662009-02-12 00:51:53 +0100613
Jiri Bencf0706e82007-05-05 11:45:53 -0700614 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
Jiri Bencf0706e82007-05-05 11:45:53 -0700615 int open_count;
Michael Wu3d30d942008-01-31 19:48:27 +0100616 int monitors, cooked_mntrs;
Michael Wu8cc9a732008-01-31 19:48:23 +0100617 /* number of interfaces with corresponding FIF_ flags */
618 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
Johannes Berg4150c572007-09-17 01:29:23 -0400619 unsigned int filter_flags; /* FIF_* */
Jiri Bencf0706e82007-05-05 11:45:53 -0700620 struct iw_statistics wstats;
Johannes Bergd0709a62008-02-25 16:27:46 +0100621 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
Johannes Bergb306f452007-07-10 19:32:08 +0200622 int tx_headroom; /* required headroom for hardware/radiotap */
Jiri Bencf0706e82007-05-05 11:45:53 -0700623
Jiri Bencf0706e82007-05-05 11:45:53 -0700624 /* Tasklet and skb queue to process calls from IRQ mode. All frames
625 * added to skb_queue will be processed, but frames in
626 * skb_queue_unreliable may be dropped if the total length of these
627 * queues increases over the limit. */
628#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
629 struct tasklet_struct tasklet;
630 struct sk_buff_head skb_queue;
631 struct sk_buff_head skb_queue_unreliable;
632
Johannes Bergd0709a62008-02-25 16:27:46 +0100633 /* Station data */
634 /*
635 * The lock only protects the list, hash, timer and counter
636 * against manipulation, reads are done in RCU. Additionally,
Johannes Bergb16bd152008-04-11 21:40:35 +0200637 * the lock protects each BSS's TIM bitmap.
Johannes Bergd0709a62008-02-25 16:27:46 +0100638 */
639 spinlock_t sta_lock;
640 unsigned long num_sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700641 struct list_head sta_list;
Johannes Bergdc6676b2008-03-31 19:23:03 +0200642 struct list_head sta_flush_list;
643 struct work_struct sta_flush_work;
Jiri Bencf0706e82007-05-05 11:45:53 -0700644 struct sta_info *sta_hash[STA_HASH_SIZE];
645 struct timer_list sta_cleanup;
646
Johannes Berge2530082008-05-17 00:57:14 +0200647 unsigned long queues_pending[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
Tomas Winklerf8e79dd2008-07-24 18:46:44 +0300648 unsigned long queues_pending_run[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
Johannes Bergeefce912008-05-17 00:57:13 +0200649 struct ieee80211_tx_stored_packet pending_packet[IEEE80211_MAX_QUEUES];
Jiri Bencf0706e82007-05-05 11:45:53 -0700650 struct tasklet_struct tx_pending_tasklet;
651
Johannes Berg53918992007-09-26 15:19:47 +0200652 /* number of interfaces with corresponding IFF_ flags */
653 atomic_t iff_allmultis, iff_promiscs;
Jiri Bencf0706e82007-05-05 11:45:53 -0700654
655 struct rate_control_ref *rate_ctrl;
656
Jiri Bencf0706e82007-05-05 11:45:53 -0700657 int rts_threshold;
Jiri Bencf0706e82007-05-05 11:45:53 -0700658 int fragmentation_threshold;
Jiri Bencf0706e82007-05-05 11:45:53 -0700659
660 struct crypto_blkcipher *wep_tx_tfm;
661 struct crypto_blkcipher *wep_rx_tfm;
662 u32 wep_iv;
Jiri Bencf0706e82007-05-05 11:45:53 -0700663
Johannes Bergc771c9d2009-01-23 22:54:03 +0100664 /* see iface.c */
Johannes Berg79010422007-09-18 17:29:21 -0400665 struct list_head interfaces;
Johannes Bergc771c9d2009-01-23 22:54:03 +0100666 struct mutex iflist_mtx;
Johannes Berg79010422007-09-18 17:29:21 -0400667
Johannes Bergb16bd152008-04-11 21:40:35 +0200668 /*
669 * Key lock, protects sdata's key_list and sta_info's
670 * key pointers (write access, they're RCU.)
671 */
672 spinlock_t key_lock;
673
674
Johannes Bergc2b13452008-09-11 00:01:55 +0200675 /* Scanning and BSS list */
676 bool sw_scanning, hw_scanning;
Johannes Berg2a519312009-02-10 21:25:55 +0100677 struct cfg80211_ssid scan_ssid;
678 struct cfg80211_scan_request int_scan_req;
679 struct cfg80211_scan_request *scan_req;
680 struct ieee80211_channel *scan_channel;
Jiri Bencf0706e82007-05-05 11:45:53 -0700681 int scan_channel_idx;
Johannes Berg8318d782008-01-24 19:38:38 +0100682
Jiri Bencf0706e82007-05-05 11:45:53 -0700683 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
684 unsigned long last_scan_completed;
685 struct delayed_work scan_work;
Johannes Berg491775a2008-09-08 17:44:23 +0200686 struct ieee80211_sub_if_data *scan_sdata;
Sujith094d05d2008-12-12 11:57:43 +0530687 enum nl80211_channel_type oper_channel_type;
Johannes Berg2a519312009-02-10 21:25:55 +0100688 struct ieee80211_channel *oper_channel, *csa_channel;
Jiri Bencf0706e82007-05-05 11:45:53 -0700689
690 /* SNMP counters */
691 /* dot11CountersTable */
692 u32 dot11TransmittedFragmentCount;
693 u32 dot11MulticastTransmittedFrameCount;
694 u32 dot11FailedCount;
695 u32 dot11RetryCount;
696 u32 dot11MultipleRetryCount;
697 u32 dot11FrameDuplicateCount;
698 u32 dot11ReceivedFragmentCount;
699 u32 dot11MulticastReceivedFrameCount;
700 u32 dot11TransmittedFrameCount;
Jiri Bencf0706e82007-05-05 11:45:53 -0700701
702#ifdef CONFIG_MAC80211_LEDS
703 int tx_led_counter, rx_led_counter;
Ivo van Doorncdcb0062008-01-07 19:45:24 +0100704 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
705 char tx_led_name[32], rx_led_name[32],
706 assoc_led_name[32], radio_led_name[32];
Jiri Bencf0706e82007-05-05 11:45:53 -0700707#endif
708
Jiri Bence9f207f2007-05-05 11:46:38 -0700709#ifdef CONFIG_MAC80211_DEBUGFS
710 struct work_struct sta_debugfs_add;
711#endif
712
Jiri Bencf0706e82007-05-05 11:45:53 -0700713#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
714 /* TX/RX handler statistics */
715 unsigned int tx_handlers_drop;
716 unsigned int tx_handlers_queued;
717 unsigned int tx_handlers_drop_unencrypted;
718 unsigned int tx_handlers_drop_fragment;
719 unsigned int tx_handlers_drop_wep;
720 unsigned int tx_handlers_drop_not_assoc;
721 unsigned int tx_handlers_drop_unauth_port;
722 unsigned int rx_handlers_drop;
723 unsigned int rx_handlers_queued;
724 unsigned int rx_handlers_drop_nullfunc;
725 unsigned int rx_handlers_drop_defrag;
726 unsigned int rx_handlers_drop_short;
727 unsigned int rx_handlers_drop_passive_scan;
728 unsigned int tx_expand_skb_head;
729 unsigned int tx_expand_skb_head_cloned;
730 unsigned int rx_expand_skb_head;
731 unsigned int rx_expand_skb_head2;
732 unsigned int rx_handlers_fragments;
733 unsigned int tx_status_drop;
Jiri Bencf0706e82007-05-05 11:45:53 -0700734#define I802_DEBUG_INC(c) (c)++
735#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
736#define I802_DEBUG_INC(c) do { } while (0)
737#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
738
739
Jiri Bencf0706e82007-05-05 11:45:53 -0700740 int total_ps_buffered; /* total number of all buffered unicast and
741 * multicast packets for power saving stations
742 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700743 int wifi_wme_noack_test;
744 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
Kalle Valo520eb822008-12-18 23:35:27 +0200745
Kalle Valoe0cb6862008-12-18 23:35:13 +0200746 bool powersave;
Kalle Valo572e0012009-02-10 17:09:31 +0200747 bool pspolling;
Kalle Valo520eb822008-12-18 23:35:27 +0200748 struct work_struct dynamic_ps_enable_work;
749 struct work_struct dynamic_ps_disable_work;
750 struct timer_list dynamic_ps_timer;
Jiri Bencf0706e82007-05-05 11:45:53 -0700751
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100752 int user_power_level; /* in dBm */
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530753 int power_constr_level; /* in dBm */
Johannes Berg2bf30fa2009-01-06 23:23:56 +0100754
Jiri Bence9f207f2007-05-05 11:46:38 -0700755#ifdef CONFIG_MAC80211_DEBUGFS
756 struct local_debugfsdentries {
Johannes Berg4b7679a2008-09-18 18:14:18 +0200757 struct dentry *rcdir;
758 struct dentry *rcname;
Jiri Bence9f207f2007-05-05 11:46:38 -0700759 struct dentry *frequency;
Jiri Bence9f207f2007-05-05 11:46:38 -0700760 struct dentry *rts_threshold;
761 struct dentry *fragmentation_threshold;
762 struct dentry *short_retry_limit;
763 struct dentry *long_retry_limit;
764 struct dentry *total_ps_buffered;
Jiri Bence9f207f2007-05-05 11:46:38 -0700765 struct dentry *wep_iv;
Alina Friedrichsenae54c982009-01-23 05:33:37 +0100766 struct dentry *tsf;
Johannes Berg827b1fb2009-03-13 11:44:18 +0100767 struct dentry *reset;
Jiri Bence9f207f2007-05-05 11:46:38 -0700768 struct dentry *statistics;
769 struct local_debugfsdentries_statsdentries {
770 struct dentry *transmitted_fragment_count;
771 struct dentry *multicast_transmitted_frame_count;
772 struct dentry *failed_count;
773 struct dentry *retry_count;
774 struct dentry *multiple_retry_count;
775 struct dentry *frame_duplicate_count;
776 struct dentry *received_fragment_count;
777 struct dentry *multicast_received_frame_count;
778 struct dentry *transmitted_frame_count;
779 struct dentry *wep_undecryptable_count;
780 struct dentry *num_scans;
781#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
782 struct dentry *tx_handlers_drop;
783 struct dentry *tx_handlers_queued;
784 struct dentry *tx_handlers_drop_unencrypted;
785 struct dentry *tx_handlers_drop_fragment;
786 struct dentry *tx_handlers_drop_wep;
787 struct dentry *tx_handlers_drop_not_assoc;
788 struct dentry *tx_handlers_drop_unauth_port;
789 struct dentry *rx_handlers_drop;
790 struct dentry *rx_handlers_queued;
791 struct dentry *rx_handlers_drop_nullfunc;
792 struct dentry *rx_handlers_drop_defrag;
793 struct dentry *rx_handlers_drop_short;
794 struct dentry *rx_handlers_drop_passive_scan;
795 struct dentry *tx_expand_skb_head;
796 struct dentry *tx_expand_skb_head_cloned;
797 struct dentry *rx_expand_skb_head;
798 struct dentry *rx_expand_skb_head2;
799 struct dentry *rx_handlers_fragments;
800 struct dentry *tx_status_drop;
Jiri Bence9f207f2007-05-05 11:46:38 -0700801#endif
802 struct dentry *dot11ACKFailureCount;
803 struct dentry *dot11RTSFailureCount;
804 struct dentry *dot11FCSErrorCount;
805 struct dentry *dot11RTSSuccessCount;
806 } stats;
807 struct dentry *stations;
808 struct dentry *keys;
809 } debugfs;
810#endif
Jiri Bencf0706e82007-05-05 11:45:53 -0700811};
812
Johannes Berg3e122be2008-07-09 14:40:34 +0200813static inline struct ieee80211_sub_if_data *
814IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
815{
816 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
817
818 BUG_ON(!local || local->mdev == dev);
819
820 return netdev_priv(dev);
821}
822
Ron Rindjunskyeadc8d92008-01-28 14:07:17 +0200823/* this struct represents 802.11n's RA/TID combination */
824struct ieee80211_ra_tid {
825 u8 ra[ETH_ALEN];
826 u16 tid;
827};
828
Luis Carlos Coboee385852008-02-23 15:17:11 +0100829/* Parsed Information Elements */
830struct ieee802_11_elems {
Jouni Malinen43ac2ca2008-08-15 22:21:27 +0300831 u8 *ie_start;
832 size_t total_len;
833
Luis Carlos Coboee385852008-02-23 15:17:11 +0100834 /* pointers to IEs */
835 u8 *ssid;
836 u8 *supp_rates;
837 u8 *fh_params;
838 u8 *ds_params;
839 u8 *cf_params;
840 u8 *tim;
841 u8 *ibss_params;
842 u8 *challenge;
843 u8 *wpa;
844 u8 *rsn;
845 u8 *erp_info;
846 u8 *ext_supp_rates;
847 u8 *wmm_info;
848 u8 *wmm_param;
Johannes Berg09914812008-10-07 19:31:17 +0200849 struct ieee80211_ht_cap *ht_cap_elem;
Johannes Bergd9fe60d2008-10-09 12:13:49 +0200850 struct ieee80211_ht_info *ht_info_elem;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100851 u8 *mesh_config;
852 u8 *mesh_id;
853 u8 *peer_link;
854 u8 *preq;
855 u8 *prep;
856 u8 *perr;
Assaf Kraussf2df3852008-06-15 18:23:29 +0300857 u8 *ch_switch_elem;
858 u8 *country_elem;
859 u8 *pwr_constr_elem;
860 u8 *quiet_elem; /* first quite element */
Jouni Malinenf797eb72009-01-19 18:48:46 +0200861 u8 *timeout_int;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100862
863 /* length of them, respectively */
864 u8 ssid_len;
865 u8 supp_rates_len;
866 u8 fh_params_len;
867 u8 ds_params_len;
868 u8 cf_params_len;
869 u8 tim_len;
870 u8 ibss_params_len;
871 u8 challenge_len;
872 u8 wpa_len;
873 u8 rsn_len;
874 u8 erp_info_len;
875 u8 ext_supp_rates_len;
876 u8 wmm_info_len;
877 u8 wmm_param_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100878 u8 mesh_config_len;
879 u8 mesh_id_len;
880 u8 peer_link_len;
881 u8 preq_len;
882 u8 prep_len;
883 u8 perr_len;
Assaf Kraussf2df3852008-06-15 18:23:29 +0300884 u8 ch_switch_elem_len;
885 u8 country_elem_len;
886 u8 pwr_constr_elem_len;
887 u8 quiet_elem_len;
888 u8 num_of_quiet_elem; /* can be more the one */
Jouni Malinenf797eb72009-01-19 18:48:46 +0200889 u8 timeout_int_len;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100890};
891
Jiri Bencf0706e82007-05-05 11:45:53 -0700892static inline struct ieee80211_local *hw_to_local(
893 struct ieee80211_hw *hw)
894{
895 return container_of(hw, struct ieee80211_local, hw);
896}
897
898static inline struct ieee80211_hw *local_to_hw(
899 struct ieee80211_local *local)
900{
901 return &local->hw;
902}
903
Jiri Bencf0706e82007-05-05 11:45:53 -0700904
Johannes Berg571ecf62007-07-27 15:43:22 +0200905static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
906{
907 return compare_ether_addr(raddr, addr) == 0 ||
908 is_broadcast_ether_addr(raddr);
909}
910
911
Johannes Berge8975582008-10-09 12:18:51 +0200912int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
Johannes Berg9d139c82008-07-09 14:40:37 +0200913int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
Johannes Berg5cf121c2008-02-25 16:27:43 +0100914void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200915void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
916 u32 changed);
Johannes Berg0d143fe2008-09-11 00:01:59 +0200917void ieee80211_configure_filter(struct ieee80211_local *local);
Johannes Berg46900292009-02-15 12:44:28 +0100918u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
Jiri Bencf0706e82007-05-05 11:45:53 -0700919
Johannes Berg9c6bd792008-09-11 00:01:52 +0200920/* wireless extensions */
Jiri Bencf0706e82007-05-05 11:45:53 -0700921extern const struct iw_handler_def ieee80211_iw_handler_def;
David S. Miller65b53e4c2008-06-10 02:22:26 -0700922
Johannes Berg46900292009-02-15 12:44:28 +0100923/* STA code */
Johannes Berg9c6bd792008-09-11 00:01:52 +0200924void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
Johannes Berg46900292009-02-15 12:44:28 +0100925ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
926 struct sk_buff *skb,
927 struct ieee80211_rx_status *rx_status);
Alina Friedrichsen79f64402009-02-21 01:27:29 +0100928int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200929int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
930int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
931int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
Johannes Berg46900292009-02-15 12:44:28 +0100932void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200933int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
934int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
Kalle Valo572e0012009-02-10 17:09:31 +0200935void ieee80211_send_pspoll(struct ieee80211_local *local,
936 struct ieee80211_sub_if_data *sdata);
Johannes Berg9c6bd792008-09-11 00:01:52 +0200937
Johannes Berg46900292009-02-15 12:44:28 +0100938/* IBSS code */
Alina Friedrichsen79f64402009-02-21 01:27:29 +0100939int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata);
Johannes Berg46900292009-02-15 12:44:28 +0100940int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
941int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
942int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
943void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
944void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
945ieee80211_rx_result
946ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
947 struct ieee80211_rx_status *rx_status);
948struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
949 u8 *bssid, u8 *addr, u32 supp_rates);
950
Johannes Berg9c6bd792008-09-11 00:01:52 +0200951/* scan/BSS handling */
Johannes Berg46900292009-02-15 12:44:28 +0100952void ieee80211_scan_work(struct work_struct *work);
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);
Helmut Schaaaf88b902009-03-09 15:47:08 +0100966void ieee80211_scan_failed(struct ieee80211_local *local);
Johannes Bergc2b13452008-09-11 00:01:55 +0200967int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
Johannes Berg2a519312009-02-10 21:25:55 +0100968 struct cfg80211_scan_request *req);
Johannes Bergc2b13452008-09-11 00:01:55 +0200969struct ieee80211_bss *
Johannes Berg98c8fcc2008-09-08 17:44:26 +0200970ieee80211_bss_info_update(struct ieee80211_local *local,
971 struct ieee80211_rx_status *rx_status,
972 struct ieee80211_mgmt *mgmt,
973 size_t len,
974 struct ieee802_11_elems *elems,
Johannes Berg2a519312009-02-10 21:25:55 +0100975 struct ieee80211_channel *channel,
976 bool beacon);
Johannes Bergc2b13452008-09-11 00:01:55 +0200977struct ieee80211_bss *
Johannes Berg5484e232008-09-08 17:44:27 +0200978ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
979 u8 *ssid, u8 ssid_len);
Johannes Berg98c8fcc2008-09-08 17:44:26 +0200980void ieee80211_rx_bss_put(struct ieee80211_local *local,
Johannes Bergc2b13452008-09-11 00:01:55 +0200981 struct ieee80211_bss *bss);
Vasanthakumar Thiagarajan7a947082009-02-04 18:28:48 +0530982void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid,
983 int freq, u8 *ssid, u8 ssid_len);
Luis Carlos Coboee385852008-02-23 15:17:11 +0100984
Johannes Berg3e122be2008-07-09 14:40:34 +0200985/* interface handling */
986int ieee80211_if_add(struct ieee80211_local *local, const char *name,
Johannes Berg05c914f2008-09-11 00:01:58 +0200987 struct net_device **new_dev, enum nl80211_iftype type,
Luis Carlos Coboee385852008-02-23 15:17:11 +0100988 struct vif_params *params);
Johannes Bergf3947e22008-07-09 14:40:36 +0200989int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
Johannes Berg05c914f2008-09-11 00:01:58 +0200990 enum nl80211_iftype type);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200991void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
Johannes Berg75636522008-07-09 14:40:35 +0200992void ieee80211_remove_interfaces(struct ieee80211_local *local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700993
Johannes Berge2ebc742007-07-27 15:43:22 +0200994/* tx handling */
Johannes Berge2ebc742007-07-27 15:43:22 +0200995void ieee80211_clear_tx_pending(struct ieee80211_local *local);
996void ieee80211_tx_pending(unsigned long data);
997int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
998int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
999int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
Johannes Berge2ebc742007-07-27 15:43:22 +02001000
Johannes Bergde1ede72008-09-09 14:42:50 +02001001/* HT */
Johannes Bergae5eb022008-10-14 16:58:37 +02001002void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1003 struct ieee80211_ht_cap *ht_cap_ie,
Johannes Bergd9fe60d2008-10-09 12:13:49 +02001004 struct ieee80211_sta_ht_cap *ht_cap);
Johannes Bergae5eb022008-10-14 16:58:37 +02001005u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
1006 struct ieee80211_ht_info *hti,
1007 u16 ap_ht_cap_flags);
Johannes Bergde1ede72008-09-09 14:42:50 +02001008void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
Johannes Bergb8695a82009-02-10 21:25:46 +01001009void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1010 const u8 *da, u16 tid,
1011 u16 initiator, u16 reason_code);
Johannes Bergde1ede72008-09-09 14:42:50 +02001012
1013void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1014 u16 tid, u16 initiator, u16 reason);
Johannes Berg849b7962009-02-10 21:25:54 +01001015void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1016 u16 initiator, u16 reason);
Johannes Berg2dace102009-02-10 21:25:52 +01001017void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
Johannes Bergde1ede72008-09-09 14:42:50 +02001018void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1019 struct sta_info *sta,
1020 struct ieee80211_mgmt *mgmt, size_t len);
1021void ieee80211_process_addba_resp(struct ieee80211_local *local,
1022 struct sta_info *sta,
1023 struct ieee80211_mgmt *mgmt,
1024 size_t len);
1025void ieee80211_process_addba_request(struct ieee80211_local *local,
1026 struct sta_info *sta,
1027 struct ieee80211_mgmt *mgmt,
1028 size_t len);
1029
Johannes Berg849b7962009-02-10 21:25:54 +01001030int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1031 enum ieee80211_back_parties initiator);
1032
Johannes Berg39192c02008-09-09 14:49:03 +02001033/* Spectrum management */
1034void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1035 struct ieee80211_mgmt *mgmt,
1036 size_t len);
Sujithc481ec92009-01-06 09:28:37 +05301037void ieee80211_chswitch_timer(unsigned long data);
1038void ieee80211_chswitch_work(struct work_struct *work);
1039void ieee80211_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1040 struct ieee80211_channel_sw_ie *sw_elem,
1041 struct ieee80211_bss *bss);
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +05301042void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1043 u16 capab_info, u8 *pwr_constr_elem,
1044 u8 pwr_constr_elem_len);
Johannes Berg39192c02008-09-09 14:49:03 +02001045
Bob Copeland665af4f2009-01-19 11:20:53 -05001046/* Suspend/resume */
Johannes Berg827b1fb2009-03-13 11:44:18 +01001047#ifdef CONFIG_PM
Bob Copeland665af4f2009-01-19 11:20:53 -05001048int __ieee80211_suspend(struct ieee80211_hw *hw);
1049int __ieee80211_resume(struct ieee80211_hw *hw);
Johannes Berg827b1fb2009-03-13 11:44:18 +01001050#else
1051static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1052{
1053 return 0;
1054}
1055static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1056{
1057 return 0;
1058}
1059#endif
Bob Copeland665af4f2009-01-19 11:20:53 -05001060
Johannes Bergc2d15602007-07-27 15:43:23 +02001061/* utility functions/constants */
1062extern void *mac80211_wiphy_privid; /* for wiphy privid */
1063extern const unsigned char rfc1042_header[6];
1064extern const unsigned char bridge_tunnel_header[6];
Ron Rindjunsky71364712007-12-25 17:00:36 +02001065u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
Johannes Berg05c914f2008-09-11 00:01:58 +02001066 enum nl80211_iftype type);
Johannes Bergc2d15602007-07-27 15:43:23 +02001067int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1068 int rate, int erp, int short_preamble);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +12001069void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
Johannes Bergeb063c12007-08-28 17:01:53 -04001070 struct ieee80211_hdr *hdr);
Johannes Berg5825fe102008-09-09 12:56:01 +02001071void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
Johannes Berge50db652008-09-09 15:07:09 +02001072void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1073 int encrypt);
Johannes Berg9c6bd792008-09-11 00:01:52 +02001074void ieee802_11_parse_elems(u8 *start, size_t len,
1075 struct ieee802_11_elems *elems);
Johannes Berge16751c2008-09-11 00:01:53 +02001076int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
Johannes Berg881d9482009-01-21 15:13:48 +01001077u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
Johannes Berg96dd22a2008-09-11 00:01:57 +02001078 enum ieee80211_band band);
Jiri Bencf0706e82007-05-05 11:45:53 -07001079
Kalle Valo520eb822008-12-18 23:35:27 +02001080void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1081void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1082void ieee80211_dynamic_ps_timer(unsigned long data);
Vivek Natarajana97b77b2008-12-23 18:39:02 -08001083void ieee80211_send_nullfunc(struct ieee80211_local *local,
1084 struct ieee80211_sub_if_data *sdata,
1085 int powersave);
Kalle Valo3cf335d2009-03-22 21:57:06 +02001086void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1087 struct ieee80211_hdr *hdr);
Kalle Valo520eb822008-12-18 23:35:27 +02001088
Kalle Valoce7c9112008-12-18 23:35:20 +02001089void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1090 enum queue_stop_reason reason);
1091void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1092 enum queue_stop_reason reason);
Johannes Berg96f5e662009-02-12 00:51:53 +01001093void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1094 enum queue_stop_reason reason);
1095void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1096 enum queue_stop_reason reason);
Kalle Valoce7c9112008-12-18 23:35:20 +02001097
Johannes Berg46900292009-02-15 12:44:28 +01001098void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1099 u16 transaction, u16 auth_alg,
1100 u8 *extra, size_t extra_len,
1101 const u8 *bssid, int encrypt);
1102void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
Jouni Malinen70692ad2009-02-16 19:39:13 +02001103 u8 *ssid, size_t ssid_len,
1104 u8 *ie, size_t ie_len);
Johannes Berg46900292009-02-15 12:44:28 +01001105
1106void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1107 const size_t supp_rates_len,
1108 const u8 *supp_rates);
1109u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1110 struct ieee802_11_elems *elems,
1111 enum ieee80211_band band);
1112
Johannes Bergf4ea83d2008-06-30 15:10:46 +02001113#ifdef CONFIG_MAC80211_NOINLINE
Johannes Bergd9e8a702008-06-30 15:10:44 +02001114#define debug_noinline noinline
1115#else
1116#define debug_noinline
1117#endif
1118
Jiri Bencf0706e82007-05-05 11:45:53 -07001119#endif /* IEEE80211_I_H */