Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 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> |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 11 | #include <linux/kref.h> |
| 12 | #include <linux/rbtree.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 13 | #include <net/genetlink.h> |
| 14 | #include <net/wireless.h> |
| 15 | #include <net/cfg80211.h> |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 16 | #include "reg.h" |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 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 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 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 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 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 | |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 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 */ |
| 52 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 53 | /* must be last because of the way we do wiphy_priv(), |
| 54 | * and it should at least be aligned to NETDEV_ALIGN */ |
| 55 | struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN))); |
| 56 | }; |
| 57 | |
| 58 | static inline |
| 59 | struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy) |
| 60 | { |
| 61 | BUG_ON(!wiphy); |
| 62 | return container_of(wiphy, struct cfg80211_registered_device, wiphy); |
| 63 | } |
| 64 | |
| 65 | extern struct mutex cfg80211_drv_mutex; |
| 66 | extern struct list_head cfg80211_drv_list; |
| 67 | |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 68 | struct cfg80211_internal_bss { |
| 69 | struct list_head list; |
| 70 | struct rb_node rbn; |
| 71 | unsigned long ts; |
| 72 | struct kref ref; |
| 73 | /* must be last because of priv member */ |
| 74 | struct cfg80211_bss pub; |
| 75 | }; |
| 76 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 77 | /* |
| 78 | * This function returns a pointer to the driver |
| 79 | * that the genl_info item that is passed refers to. |
| 80 | * If successful, it returns non-NULL and also locks |
| 81 | * the driver's mutex! |
| 82 | * |
| 83 | * This means that you need to call cfg80211_put_dev() |
| 84 | * before being allowed to acquire &cfg80211_drv_mutex! |
| 85 | * |
| 86 | * This is necessary because we need to lock the global |
| 87 | * mutex to get an item off the list safely, and then |
| 88 | * we lock the drv mutex so it doesn't go away under us. |
| 89 | * |
| 90 | * We don't want to keep cfg80211_drv_mutex locked |
| 91 | * for all the time in order to allow requests on |
| 92 | * other interfaces to go through at the same time. |
| 93 | * |
| 94 | * The result of this can be a PTR_ERR and hence must |
| 95 | * be checked with IS_ERR() for errors. |
| 96 | */ |
| 97 | extern struct cfg80211_registered_device * |
| 98 | cfg80211_get_dev_from_info(struct genl_info *info); |
| 99 | |
| 100 | /* identical to cfg80211_get_dev_from_info but only operate on ifindex */ |
| 101 | extern struct cfg80211_registered_device * |
| 102 | cfg80211_get_dev_from_ifindex(int ifindex); |
| 103 | |
| 104 | extern void cfg80211_put_dev(struct cfg80211_registered_device *drv); |
| 105 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 106 | /* free object */ |
| 107 | extern void cfg80211_dev_free(struct cfg80211_registered_device *drv); |
| 108 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 109 | extern int cfg80211_dev_rename(struct cfg80211_registered_device *drv, |
| 110 | char *newname); |
| 111 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 112 | void ieee80211_set_bitrate_flags(struct wiphy *wiphy); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 113 | void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 114 | |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 115 | void cfg80211_bss_expire(struct cfg80211_registered_device *dev); |
| 116 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 117 | #endif /* __NET_WIRELESS_CORE_H */ |