Commit | Line | Data |
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704232c2 JB |
1 | /* |
2 | * Wireless configuration interface internals. | |
3 | * | |
08645126 | 4 | * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net> |
704232c2 JB |
5 | */ |
6 | #ifndef __NET_WIRELESS_CORE_H | |
7 | #define __NET_WIRELESS_CORE_H | |
8 | #include <linux/mutex.h> | |
9 | #include <linux/list.h> | |
10 | #include <linux/netdevice.h> | |
2a519311 JB |
11 | #include <linux/kref.h> |
12 | #include <linux/rbtree.h> | |
1ac61302 | 13 | #include <linux/debugfs.h> |
1f87f7d3 JB |
14 | #include <linux/rfkill.h> |
15 | #include <linux/workqueue.h> | |
704232c2 | 16 | #include <net/genetlink.h> |
704232c2 | 17 | #include <net/cfg80211.h> |
3f2355cb | 18 | #include "reg.h" |
704232c2 JB |
19 | |
20 | struct cfg80211_registered_device { | |
3dcf670b | 21 | const struct cfg80211_ops *ops; |
704232c2 JB |
22 | struct list_head list; |
23 | /* we hold this mutex during any call so that | |
24 | * we cannot do multiple calls at once, and also | |
25 | * to avoid the deregister call to proceed while | |
26 | * any call is in progress */ | |
27 | struct mutex mtx; | |
28 | ||
1f87f7d3 JB |
29 | /* rfkill support */ |
30 | struct rfkill_ops rfkill_ops; | |
31 | struct rfkill *rfkill; | |
32 | struct work_struct rfkill_sync; | |
33 | ||
3f2355cb LR |
34 | /* ISO / IEC 3166 alpha2 for which this device is receiving |
35 | * country IEs on, this can help disregard country IEs from APs | |
36 | * on the same alpha2 quickly. The alpha2 may differ from | |
37 | * cfg80211_regdomain's alpha2 when an intersection has occurred. | |
38 | * If the AP is reconfigured this can also be used to tell us if | |
39 | * the country on the country IE changed. */ | |
40 | char country_ie_alpha2[2]; | |
41 | ||
42 | /* If a Country IE has been received this tells us the environment | |
43 | * which its telling us its in. This defaults to ENVIRON_ANY */ | |
44 | enum environment_cap env; | |
45 | ||
704232c2 | 46 | /* wiphy index, internal only */ |
b5850a7a | 47 | int wiphy_idx; |
704232c2 JB |
48 | |
49 | /* associate netdev list */ | |
50 | struct mutex devlist_mtx; | |
51 | struct list_head netdev_list; | |
52 | ||
2a519311 JB |
53 | /* BSSes/scanning */ |
54 | spinlock_t bss_lock; | |
55 | struct list_head bss_list; | |
56 | struct rb_root bss_tree; | |
57 | u32 bss_generation; | |
58 | struct cfg80211_scan_request *scan_req; /* protected by RTNL */ | |
cb3a8eec | 59 | unsigned long suspend_at; |
2a519311 | 60 | |
aff89a9b JB |
61 | #ifdef CONFIG_NL80211_TESTMODE |
62 | struct genl_info *testmode_info; | |
63 | #endif | |
64 | ||
6829c878 JB |
65 | struct work_struct conn_work; |
66 | ||
e43e820c | 67 | #ifdef CONFIG_CFG80211_DEBUGFS |
1ac61302 LR |
68 | /* Debugfs entries */ |
69 | struct wiphy_debugfsdentries { | |
70 | struct dentry *rts_threshold; | |
71 | struct dentry *fragmentation_threshold; | |
72 | struct dentry *short_retry_limit; | |
73 | struct dentry *long_retry_limit; | |
80a3511d | 74 | struct dentry *ht40allow_map; |
1ac61302 LR |
75 | } debugfs; |
76 | #endif | |
77 | ||
704232c2 JB |
78 | /* must be last because of the way we do wiphy_priv(), |
79 | * and it should at least be aligned to NETDEV_ALIGN */ | |
80 | struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN))); | |
81 | }; | |
82 | ||
83 | static inline | |
84 | struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy) | |
85 | { | |
86 | BUG_ON(!wiphy); | |
87 | return container_of(wiphy, struct cfg80211_registered_device, wiphy); | |
88 | } | |
89 | ||
85fd129a LR |
90 | /* Note 0 is valid, hence phy0 */ |
91 | static inline | |
92 | bool wiphy_idx_valid(int wiphy_idx) | |
93 | { | |
94 | return (wiphy_idx >= 0); | |
95 | } | |
96 | ||
a1794390 | 97 | extern struct mutex cfg80211_mutex; |
704232c2 JB |
98 | extern struct list_head cfg80211_drv_list; |
99 | ||
7edfab7a | 100 | #define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex)) |
761cf7ec | 101 | |
806a9e39 LR |
102 | /* |
103 | * You can use this to mark a wiphy_idx as not having an associated wiphy. | |
104 | * It guarantees cfg80211_drv_by_wiphy_idx(wiphy_idx) will return NULL | |
105 | */ | |
106 | #define WIPHY_IDX_STALE -1 | |
107 | ||
2a519311 JB |
108 | struct cfg80211_internal_bss { |
109 | struct list_head list; | |
110 | struct rb_node rbn; | |
111 | unsigned long ts; | |
112 | struct kref ref; | |
19957bb3 JB |
113 | atomic_t hold; |
114 | bool ies_allocated; | |
a08c1c1a | 115 | |
2a519311 JB |
116 | /* must be last because of priv member */ |
117 | struct cfg80211_bss pub; | |
118 | }; | |
119 | ||
19957bb3 JB |
120 | static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub) |
121 | { | |
122 | return container_of(pub, struct cfg80211_internal_bss, pub); | |
123 | } | |
124 | ||
125 | static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss) | |
126 | { | |
127 | atomic_inc(&bss->hold); | |
128 | } | |
129 | ||
130 | static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss) | |
131 | { | |
132 | int r = atomic_dec_return(&bss->hold); | |
133 | WARN_ON(r < 0); | |
134 | } | |
135 | ||
136 | ||
806a9e39 LR |
137 | struct cfg80211_registered_device *cfg80211_drv_by_wiphy_idx(int wiphy_idx); |
138 | int get_wiphy_idx(struct wiphy *wiphy); | |
139 | ||
4bbf4d56 JB |
140 | struct cfg80211_registered_device * |
141 | __cfg80211_drv_from_info(struct genl_info *info); | |
142 | ||
55682965 JB |
143 | /* |
144 | * This function returns a pointer to the driver | |
145 | * that the genl_info item that is passed refers to. | |
146 | * If successful, it returns non-NULL and also locks | |
147 | * the driver's mutex! | |
148 | * | |
149 | * This means that you need to call cfg80211_put_dev() | |
a1794390 | 150 | * before being allowed to acquire &cfg80211_mutex! |
55682965 JB |
151 | * |
152 | * This is necessary because we need to lock the global | |
153 | * mutex to get an item off the list safely, and then | |
154 | * we lock the drv mutex so it doesn't go away under us. | |
155 | * | |
a1794390 | 156 | * We don't want to keep cfg80211_mutex locked |
55682965 JB |
157 | * for all the time in order to allow requests on |
158 | * other interfaces to go through at the same time. | |
159 | * | |
160 | * The result of this can be a PTR_ERR and hence must | |
161 | * be checked with IS_ERR() for errors. | |
162 | */ | |
163 | extern struct cfg80211_registered_device * | |
164 | cfg80211_get_dev_from_info(struct genl_info *info); | |
165 | ||
806a9e39 LR |
166 | /* requires cfg80211_drv_mutex to be held! */ |
167 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx); | |
168 | ||
55682965 JB |
169 | /* identical to cfg80211_get_dev_from_info but only operate on ifindex */ |
170 | extern struct cfg80211_registered_device * | |
171 | cfg80211_get_dev_from_ifindex(int ifindex); | |
172 | ||
173 | extern void cfg80211_put_dev(struct cfg80211_registered_device *drv); | |
174 | ||
704232c2 JB |
175 | /* free object */ |
176 | extern void cfg80211_dev_free(struct cfg80211_registered_device *drv); | |
177 | ||
55682965 JB |
178 | extern int cfg80211_dev_rename(struct cfg80211_registered_device *drv, |
179 | char *newname); | |
180 | ||
8318d78a | 181 | void ieee80211_set_bitrate_flags(struct wiphy *wiphy); |
7db90f4a LR |
182 | void wiphy_update_regulatory(struct wiphy *wiphy, |
183 | enum nl80211_reg_initiator setby); | |
8318d78a | 184 | |
2a519311 | 185 | void cfg80211_bss_expire(struct cfg80211_registered_device *dev); |
cb3a8eec DW |
186 | void cfg80211_bss_age(struct cfg80211_registered_device *dev, |
187 | unsigned long age_secs); | |
2a519311 | 188 | |
04a773ad JB |
189 | /* IBSS */ |
190 | int cfg80211_join_ibss(struct cfg80211_registered_device *rdev, | |
191 | struct net_device *dev, | |
192 | struct cfg80211_ibss_params *params); | |
9d308429 | 193 | void cfg80211_clear_ibss(struct net_device *dev, bool nowext); |
04a773ad | 194 | int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
9d308429 | 195 | struct net_device *dev, bool nowext); |
04a773ad | 196 | |
19957bb3 JB |
197 | /* MLME */ |
198 | int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, | |
199 | struct net_device *dev, struct ieee80211_channel *chan, | |
200 | enum nl80211_auth_type auth_type, const u8 *bssid, | |
201 | const u8 *ssid, int ssid_len, | |
202 | const u8 *ie, int ie_len); | |
203 | int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, | |
204 | struct net_device *dev, struct ieee80211_channel *chan, | |
205 | const u8 *bssid, const u8 *ssid, int ssid_len, | |
206 | const u8 *ie, int ie_len, bool use_mfp, | |
207 | struct cfg80211_crypto_settings *crypt); | |
208 | int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, | |
209 | struct net_device *dev, const u8 *bssid, | |
210 | const u8 *ie, int ie_len, u16 reason); | |
211 | int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, | |
212 | struct net_device *dev, const u8 *bssid, | |
213 | const u8 *ie, int ie_len, u16 reason); | |
214 | void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, | |
215 | struct net_device *dev); | |
216 | ||
b23aa676 SO |
217 | /* SME */ |
218 | int cfg80211_connect(struct cfg80211_registered_device *rdev, | |
219 | struct net_device *dev, | |
220 | struct cfg80211_connect_params *connect); | |
221 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, | |
f2129354 JB |
222 | struct net_device *dev, u16 reason, |
223 | bool wextev); | |
b23aa676 | 224 | |
6829c878 JB |
225 | void cfg80211_conn_work(struct work_struct *work); |
226 | ||
08645126 JB |
227 | /* internal helpers */ |
228 | int cfg80211_validate_key_settings(struct key_params *params, int key_idx, | |
229 | const u8 *mac_addr); | |
6829c878 JB |
230 | void __cfg80211_disconnected(struct net_device *dev, gfp_t gfp, u8 *ie, |
231 | size_t ie_len, u16 reason, bool from_ap); | |
232 | void cfg80211_sme_scan_done(struct net_device *dev); | |
233 | void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len); | |
19957bb3 | 234 | void cfg80211_sme_disassoc(struct net_device *dev, int idx); |
08645126 | 235 | |
704232c2 | 236 | #endif /* __NET_WIRELESS_CORE_H */ |