| Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1 | #ifndef __NET_WIRELESS_H |
| 2 | #define __NET_WIRELESS_H |
| 3 | |
| 4 | /* |
| 5 | * 802.11 device management |
| 6 | * |
| 7 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> |
| 8 | */ |
| 9 | |
| 10 | #include <linux/netdevice.h> |
| 11 | #include <linux/debugfs.h> |
| 12 | #include <linux/list.h> |
| 13 | #include <net/cfg80211.h> |
| 14 | |
| 15 | /** |
| 16 | * struct wiphy - wireless hardware description |
| 17 | * @idx: the wiphy index assigned to this item |
| 18 | * @class_dev: the class device representing /sys/class/ieee80211/<wiphy-name> |
| 19 | */ |
| 20 | struct wiphy { |
| 21 | /* assign these fields before you register the wiphy */ |
| 22 | |
| 23 | /* permanent MAC address */ |
| 24 | u8 perm_addr[ETH_ALEN]; |
| 25 | |
| 26 | /* If multiple wiphys are registered and you're handed e.g. |
| 27 | * a regular netdev with assigned ieee80211_ptr, you won't |
| 28 | * know whether it points to a wiphy your driver has registered |
| 29 | * or not. Assign this to something global to your driver to |
| 30 | * help determine whether you own this wiphy or not. */ |
| 31 | void *privid; |
| 32 | |
| 33 | /* fields below are read-only, assigned by cfg80211 */ |
| 34 | |
| 35 | /* the item in /sys/class/ieee80211/ points to this, |
| 36 | * you need use set_wiphy_dev() (see below) */ |
| 37 | struct device dev; |
| 38 | |
| 39 | /* dir in debugfs: ieee80211/<wiphyname> */ |
| 40 | struct dentry *debugfsdir; |
| 41 | |
| 42 | char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); |
| 43 | }; |
| 44 | |
| 45 | /** struct wireless_dev - wireless per-netdev state |
| 46 | * |
| 47 | * This structure must be allocated by the driver/stack |
| 48 | * that uses the ieee80211_ptr field in struct net_device |
| 49 | * (this is intentional so it can be allocated along with |
| 50 | * the netdev.) |
| 51 | * |
| 52 | * @wiphy: pointer to hardware description |
| 53 | */ |
| 54 | struct wireless_dev { |
| 55 | struct wiphy *wiphy; |
| 56 | |
| 57 | /* private to the generic wireless code */ |
| 58 | struct list_head list; |
| 59 | struct net_device *netdev; |
| 60 | }; |
| 61 | |
| 62 | /** |
| 63 | * wiphy_priv - return priv from wiphy |
| 64 | */ |
| 65 | static inline void *wiphy_priv(struct wiphy *wiphy) |
| 66 | { |
| 67 | BUG_ON(!wiphy); |
| 68 | return &wiphy->priv; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * set_wiphy_dev - set device pointer for wiphy |
| 73 | */ |
| 74 | static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) |
| 75 | { |
| 76 | wiphy->dev.parent = dev; |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * wiphy_dev - get wiphy dev pointer |
| 81 | */ |
| 82 | static inline struct device *wiphy_dev(struct wiphy *wiphy) |
| 83 | { |
| 84 | return wiphy->dev.parent; |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * wiphy_name - get wiphy name |
| 89 | */ |
| 90 | static inline char *wiphy_name(struct wiphy *wiphy) |
| 91 | { |
| 92 | return wiphy->dev.bus_id; |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * wdev_priv - return wiphy priv from wireless_dev |
| 97 | */ |
| 98 | static inline void *wdev_priv(struct wireless_dev *wdev) |
| 99 | { |
| 100 | BUG_ON(!wdev); |
| 101 | return wiphy_priv(wdev->wiphy); |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * wiphy_new - create a new wiphy for use with cfg80211 |
| 106 | * |
| 107 | * create a new wiphy and associate the given operations with it. |
| 108 | * @sizeof_priv bytes are allocated for private use. |
| 109 | * |
| 110 | * the returned pointer must be assigned to each netdev's |
| 111 | * ieee80211_ptr for proper operation. |
| 112 | */ |
| 113 | struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv); |
| 114 | |
| 115 | /** |
| 116 | * wiphy_register - register a wiphy with cfg80211 |
| 117 | * |
| 118 | * register the given wiphy |
| 119 | * |
| 120 | * Returns a non-negative wiphy index or a negative error code. |
| 121 | */ |
| 122 | extern int wiphy_register(struct wiphy *wiphy); |
| 123 | |
| 124 | /** |
| 125 | * wiphy_unregister - deregister a wiphy from cfg80211 |
| 126 | * |
| 127 | * unregister a device with the given priv pointer. |
| 128 | * After this call, no more requests can be made with this priv |
| 129 | * pointer, but the call may sleep to wait for an outstanding |
| 130 | * request that is being handled. |
| 131 | */ |
| 132 | extern void wiphy_unregister(struct wiphy *wiphy); |
| 133 | |
| 134 | /** |
| 135 | * wiphy_free - free wiphy |
| 136 | */ |
| 137 | extern void wiphy_free(struct wiphy *wiphy); |
| 138 | |
| 139 | #endif /* __NET_WIRELESS_H */ |