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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> |
704232c2 | 14 | #include <net/genetlink.h> |
704232c2 | 15 | #include <net/cfg80211.h> |
3f2355cb | 16 | #include "reg.h" |
704232c2 JB |
17 | |
18 | struct cfg80211_registered_device { | |
19 | struct cfg80211_ops *ops; | |
20 | struct list_head list; | |
21 | /* we hold this mutex during any call so that | |
22 | * we cannot do multiple calls at once, and also | |
23 | * to avoid the deregister call to proceed while | |
24 | * any call is in progress */ | |
25 | struct mutex mtx; | |
26 | ||
3f2355cb LR |
27 | /* ISO / IEC 3166 alpha2 for which this device is receiving |
28 | * country IEs on, this can help disregard country IEs from APs | |
29 | * on the same alpha2 quickly. The alpha2 may differ from | |
30 | * cfg80211_regdomain's alpha2 when an intersection has occurred. | |
31 | * If the AP is reconfigured this can also be used to tell us if | |
32 | * the country on the country IE changed. */ | |
33 | char country_ie_alpha2[2]; | |
34 | ||
35 | /* If a Country IE has been received this tells us the environment | |
36 | * which its telling us its in. This defaults to ENVIRON_ANY */ | |
37 | enum environment_cap env; | |
38 | ||
704232c2 | 39 | /* wiphy index, internal only */ |
b5850a7a | 40 | int wiphy_idx; |
704232c2 JB |
41 | |
42 | /* associate netdev list */ | |
43 | struct mutex devlist_mtx; | |
44 | struct list_head netdev_list; | |
45 | ||
2a519311 JB |
46 | /* BSSes/scanning */ |
47 | spinlock_t bss_lock; | |
48 | struct list_head bss_list; | |
49 | struct rb_root bss_tree; | |
50 | u32 bss_generation; | |
51 | struct cfg80211_scan_request *scan_req; /* protected by RTNL */ | |
cb3a8eec | 52 | unsigned long suspend_at; |
2a519311 | 53 | |
1ac61302 LR |
54 | #ifdef CONFIG_MAC80211_DEBUGFS |
55 | /* Debugfs entries */ | |
56 | struct wiphy_debugfsdentries { | |
57 | struct dentry *rts_threshold; | |
58 | struct dentry *fragmentation_threshold; | |
59 | struct dentry *short_retry_limit; | |
60 | struct dentry *long_retry_limit; | |
80a3511d | 61 | struct dentry *ht40allow_map; |
1ac61302 LR |
62 | } debugfs; |
63 | #endif | |
64 | ||
704232c2 JB |
65 | /* must be last because of the way we do wiphy_priv(), |
66 | * and it should at least be aligned to NETDEV_ALIGN */ | |
67 | struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN))); | |
68 | }; | |
69 | ||
70 | static inline | |
71 | struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy) | |
72 | { | |
73 | BUG_ON(!wiphy); | |
74 | return container_of(wiphy, struct cfg80211_registered_device, wiphy); | |
75 | } | |
76 | ||
85fd129a LR |
77 | /* Note 0 is valid, hence phy0 */ |
78 | static inline | |
79 | bool wiphy_idx_valid(int wiphy_idx) | |
80 | { | |
81 | return (wiphy_idx >= 0); | |
82 | } | |
83 | ||
a1794390 | 84 | extern struct mutex cfg80211_mutex; |
704232c2 JB |
85 | extern struct list_head cfg80211_drv_list; |
86 | ||
7edfab7a | 87 | #define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex)) |
761cf7ec | 88 | |
806a9e39 LR |
89 | /* |
90 | * You can use this to mark a wiphy_idx as not having an associated wiphy. | |
91 | * It guarantees cfg80211_drv_by_wiphy_idx(wiphy_idx) will return NULL | |
92 | */ | |
93 | #define WIPHY_IDX_STALE -1 | |
94 | ||
2a519311 JB |
95 | struct cfg80211_internal_bss { |
96 | struct list_head list; | |
97 | struct rb_node rbn; | |
98 | unsigned long ts; | |
99 | struct kref ref; | |
cd1658f5 | 100 | bool hold, ies_allocated; |
a08c1c1a | 101 | |
2a519311 JB |
102 | /* must be last because of priv member */ |
103 | struct cfg80211_bss pub; | |
104 | }; | |
105 | ||
806a9e39 LR |
106 | struct cfg80211_registered_device *cfg80211_drv_by_wiphy_idx(int wiphy_idx); |
107 | int get_wiphy_idx(struct wiphy *wiphy); | |
108 | ||
4bbf4d56 JB |
109 | struct cfg80211_registered_device * |
110 | __cfg80211_drv_from_info(struct genl_info *info); | |
111 | ||
55682965 JB |
112 | /* |
113 | * This function returns a pointer to the driver | |
114 | * that the genl_info item that is passed refers to. | |
115 | * If successful, it returns non-NULL and also locks | |
116 | * the driver's mutex! | |
117 | * | |
118 | * This means that you need to call cfg80211_put_dev() | |
a1794390 | 119 | * before being allowed to acquire &cfg80211_mutex! |
55682965 JB |
120 | * |
121 | * This is necessary because we need to lock the global | |
122 | * mutex to get an item off the list safely, and then | |
123 | * we lock the drv mutex so it doesn't go away under us. | |
124 | * | |
a1794390 | 125 | * We don't want to keep cfg80211_mutex locked |
55682965 JB |
126 | * for all the time in order to allow requests on |
127 | * other interfaces to go through at the same time. | |
128 | * | |
129 | * The result of this can be a PTR_ERR and hence must | |
130 | * be checked with IS_ERR() for errors. | |
131 | */ | |
132 | extern struct cfg80211_registered_device * | |
133 | cfg80211_get_dev_from_info(struct genl_info *info); | |
134 | ||
806a9e39 LR |
135 | /* requires cfg80211_drv_mutex to be held! */ |
136 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx); | |
137 | ||
55682965 JB |
138 | /* identical to cfg80211_get_dev_from_info but only operate on ifindex */ |
139 | extern struct cfg80211_registered_device * | |
140 | cfg80211_get_dev_from_ifindex(int ifindex); | |
141 | ||
142 | extern void cfg80211_put_dev(struct cfg80211_registered_device *drv); | |
143 | ||
704232c2 JB |
144 | /* free object */ |
145 | extern void cfg80211_dev_free(struct cfg80211_registered_device *drv); | |
146 | ||
55682965 JB |
147 | extern int cfg80211_dev_rename(struct cfg80211_registered_device *drv, |
148 | char *newname); | |
149 | ||
8318d78a | 150 | void ieee80211_set_bitrate_flags(struct wiphy *wiphy); |
7db90f4a LR |
151 | void wiphy_update_regulatory(struct wiphy *wiphy, |
152 | enum nl80211_reg_initiator setby); | |
8318d78a | 153 | |
2a519311 | 154 | void cfg80211_bss_expire(struct cfg80211_registered_device *dev); |
cb3a8eec DW |
155 | void cfg80211_bss_age(struct cfg80211_registered_device *dev, |
156 | unsigned long age_secs); | |
2a519311 | 157 | |
04a773ad JB |
158 | /* IBSS */ |
159 | int cfg80211_join_ibss(struct cfg80211_registered_device *rdev, | |
160 | struct net_device *dev, | |
161 | struct cfg80211_ibss_params *params); | |
9d308429 | 162 | void cfg80211_clear_ibss(struct net_device *dev, bool nowext); |
04a773ad | 163 | int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
9d308429 | 164 | struct net_device *dev, bool nowext); |
04a773ad | 165 | |
08645126 JB |
166 | /* internal helpers */ |
167 | int cfg80211_validate_key_settings(struct key_params *params, int key_idx, | |
168 | const u8 *mac_addr); | |
169 | ||
704232c2 | 170 | #endif /* __NET_WIRELESS_CORE_H */ |