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> | |
704232c2 JB |
13 | #include <net/genetlink.h> |
14 | #include <net/wireless.h> | |
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 JB |
39 | /* wiphy index, internal only */ |
40 | int idx; | |
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 | |
704232c2 JB |
54 | /* must be last because of the way we do wiphy_priv(), |
55 | * and it should at least be aligned to NETDEV_ALIGN */ | |
56 | struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN))); | |
57 | }; | |
58 | ||
59 | static inline | |
60 | struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy) | |
61 | { | |
62 | BUG_ON(!wiphy); | |
63 | return container_of(wiphy, struct cfg80211_registered_device, wiphy); | |
64 | } | |
65 | ||
66 | extern struct mutex cfg80211_drv_mutex; | |
67 | extern struct list_head cfg80211_drv_list; | |
68 | ||
2a519311 JB |
69 | struct cfg80211_internal_bss { |
70 | struct list_head list; | |
71 | struct rb_node rbn; | |
72 | unsigned long ts; | |
73 | struct kref ref; | |
74 | /* must be last because of priv member */ | |
75 | struct cfg80211_bss pub; | |
76 | }; | |
77 | ||
55682965 JB |
78 | /* |
79 | * This function returns a pointer to the driver | |
80 | * that the genl_info item that is passed refers to. | |
81 | * If successful, it returns non-NULL and also locks | |
82 | * the driver's mutex! | |
83 | * | |
84 | * This means that you need to call cfg80211_put_dev() | |
85 | * before being allowed to acquire &cfg80211_drv_mutex! | |
86 | * | |
87 | * This is necessary because we need to lock the global | |
88 | * mutex to get an item off the list safely, and then | |
89 | * we lock the drv mutex so it doesn't go away under us. | |
90 | * | |
91 | * We don't want to keep cfg80211_drv_mutex locked | |
92 | * for all the time in order to allow requests on | |
93 | * other interfaces to go through at the same time. | |
94 | * | |
95 | * The result of this can be a PTR_ERR and hence must | |
96 | * be checked with IS_ERR() for errors. | |
97 | */ | |
98 | extern struct cfg80211_registered_device * | |
99 | cfg80211_get_dev_from_info(struct genl_info *info); | |
100 | ||
101 | /* identical to cfg80211_get_dev_from_info but only operate on ifindex */ | |
102 | extern struct cfg80211_registered_device * | |
103 | cfg80211_get_dev_from_ifindex(int ifindex); | |
104 | ||
105 | extern void cfg80211_put_dev(struct cfg80211_registered_device *drv); | |
106 | ||
704232c2 JB |
107 | /* free object */ |
108 | extern void cfg80211_dev_free(struct cfg80211_registered_device *drv); | |
109 | ||
55682965 JB |
110 | extern int cfg80211_dev_rename(struct cfg80211_registered_device *drv, |
111 | char *newname); | |
112 | ||
8318d78a | 113 | void ieee80211_set_bitrate_flags(struct wiphy *wiphy); |
b2e1b302 | 114 | void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby); |
8318d78a | 115 | |
2a519311 | 116 | void cfg80211_bss_expire(struct cfg80211_registered_device *dev); |
cb3a8eec DW |
117 | void cfg80211_bss_age(struct cfg80211_registered_device *dev, |
118 | unsigned long age_secs); | |
2a519311 | 119 | |
704232c2 | 120 | #endif /* __NET_WIRELESS_CORE_H */ |