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Commit | Line | Data |
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704232c2 JB |
1 | /* |
2 | * Wireless configuration interface internals. | |
3 | * | |
4 | * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net> | |
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> | |
761cf7ec | 13 | #include <linux/mutex.h> |
704232c2 JB |
14 | #include <net/genetlink.h> |
15 | #include <net/wireless.h> | |
16 | #include <net/cfg80211.h> | |
3f2355cb | 17 | #include "reg.h" |
704232c2 JB |
18 | |
19 | struct cfg80211_registered_device { | |
20 | struct cfg80211_ops *ops; | |
21 | struct list_head list; | |
22 | /* we hold this mutex during any call so that | |
23 | * we cannot do multiple calls at once, and also | |
24 | * to avoid the deregister call to proceed while | |
25 | * any call is in progress */ | |
26 | struct mutex mtx; | |
27 | ||
3f2355cb LR |
28 | /* ISO / IEC 3166 alpha2 for which this device is receiving |
29 | * country IEs on, this can help disregard country IEs from APs | |
30 | * on the same alpha2 quickly. The alpha2 may differ from | |
31 | * cfg80211_regdomain's alpha2 when an intersection has occurred. | |
32 | * If the AP is reconfigured this can also be used to tell us if | |
33 | * the country on the country IE changed. */ | |
34 | char country_ie_alpha2[2]; | |
35 | ||
36 | /* If a Country IE has been received this tells us the environment | |
37 | * which its telling us its in. This defaults to ENVIRON_ANY */ | |
38 | enum environment_cap env; | |
39 | ||
704232c2 | 40 | /* wiphy index, internal only */ |
b5850a7a | 41 | int wiphy_idx; |
704232c2 JB |
42 | |
43 | /* associate netdev list */ | |
44 | struct mutex devlist_mtx; | |
45 | struct list_head netdev_list; | |
46 | ||
2a519311 JB |
47 | /* BSSes/scanning */ |
48 | spinlock_t bss_lock; | |
49 | struct list_head bss_list; | |
50 | struct rb_root bss_tree; | |
51 | u32 bss_generation; | |
52 | struct cfg80211_scan_request *scan_req; /* protected by RTNL */ | |
cb3a8eec | 53 | unsigned long suspend_at; |
2a519311 | 54 | |
704232c2 JB |
55 | /* must be last because of the way we do wiphy_priv(), |
56 | * and it should at least be aligned to NETDEV_ALIGN */ | |
57 | struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN))); | |
58 | }; | |
59 | ||
60 | static inline | |
61 | struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy) | |
62 | { | |
63 | BUG_ON(!wiphy); | |
64 | return container_of(wiphy, struct cfg80211_registered_device, wiphy); | |
65 | } | |
66 | ||
85fd129a LR |
67 | /* Note 0 is valid, hence phy0 */ |
68 | static inline | |
69 | bool wiphy_idx_valid(int wiphy_idx) | |
70 | { | |
71 | return (wiphy_idx >= 0); | |
72 | } | |
73 | ||
a1794390 | 74 | extern struct mutex cfg80211_mutex; |
704232c2 JB |
75 | extern struct list_head cfg80211_drv_list; |
76 | ||
761cf7ec LR |
77 | static inline void assert_cfg80211_lock(void) |
78 | { | |
0bfbce18 | 79 | WARN_ON(!mutex_is_locked(&cfg80211_mutex)); |
761cf7ec LR |
80 | } |
81 | ||
806a9e39 LR |
82 | /* |
83 | * You can use this to mark a wiphy_idx as not having an associated wiphy. | |
84 | * It guarantees cfg80211_drv_by_wiphy_idx(wiphy_idx) will return NULL | |
85 | */ | |
86 | #define WIPHY_IDX_STALE -1 | |
87 | ||
2a519311 JB |
88 | struct cfg80211_internal_bss { |
89 | struct list_head list; | |
90 | struct rb_node rbn; | |
91 | unsigned long ts; | |
92 | struct kref ref; | |
cd1658f5 | 93 | bool hold, ies_allocated; |
a08c1c1a | 94 | |
2a519311 JB |
95 | /* must be last because of priv member */ |
96 | struct cfg80211_bss pub; | |
97 | }; | |
98 | ||
806a9e39 LR |
99 | struct cfg80211_registered_device *cfg80211_drv_by_wiphy_idx(int wiphy_idx); |
100 | int get_wiphy_idx(struct wiphy *wiphy); | |
101 | ||
4bbf4d56 JB |
102 | struct cfg80211_registered_device * |
103 | __cfg80211_drv_from_info(struct genl_info *info); | |
104 | ||
55682965 JB |
105 | /* |
106 | * This function returns a pointer to the driver | |
107 | * that the genl_info item that is passed refers to. | |
108 | * If successful, it returns non-NULL and also locks | |
109 | * the driver's mutex! | |
110 | * | |
111 | * This means that you need to call cfg80211_put_dev() | |
a1794390 | 112 | * before being allowed to acquire &cfg80211_mutex! |
55682965 JB |
113 | * |
114 | * This is necessary because we need to lock the global | |
115 | * mutex to get an item off the list safely, and then | |
116 | * we lock the drv mutex so it doesn't go away under us. | |
117 | * | |
a1794390 | 118 | * We don't want to keep cfg80211_mutex locked |
55682965 JB |
119 | * for all the time in order to allow requests on |
120 | * other interfaces to go through at the same time. | |
121 | * | |
122 | * The result of this can be a PTR_ERR and hence must | |
123 | * be checked with IS_ERR() for errors. | |
124 | */ | |
125 | extern struct cfg80211_registered_device * | |
126 | cfg80211_get_dev_from_info(struct genl_info *info); | |
127 | ||
806a9e39 LR |
128 | /* requires cfg80211_drv_mutex to be held! */ |
129 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx); | |
130 | ||
55682965 JB |
131 | /* identical to cfg80211_get_dev_from_info but only operate on ifindex */ |
132 | extern struct cfg80211_registered_device * | |
133 | cfg80211_get_dev_from_ifindex(int ifindex); | |
134 | ||
135 | extern void cfg80211_put_dev(struct cfg80211_registered_device *drv); | |
136 | ||
704232c2 JB |
137 | /* free object */ |
138 | extern void cfg80211_dev_free(struct cfg80211_registered_device *drv); | |
139 | ||
55682965 JB |
140 | extern int cfg80211_dev_rename(struct cfg80211_registered_device *drv, |
141 | char *newname); | |
142 | ||
8318d78a | 143 | void ieee80211_set_bitrate_flags(struct wiphy *wiphy); |
7db90f4a LR |
144 | void wiphy_update_regulatory(struct wiphy *wiphy, |
145 | enum nl80211_reg_initiator setby); | |
8318d78a | 146 | |
2a519311 | 147 | void cfg80211_bss_expire(struct cfg80211_registered_device *dev); |
cb3a8eec DW |
148 | void cfg80211_bss_age(struct cfg80211_registered_device *dev, |
149 | unsigned long age_secs); | |
2a519311 | 150 | |
704232c2 | 151 | #endif /* __NET_WIRELESS_CORE_H */ |