include/net/cfg80211.h

   1 #ifndef __NET_CFG80211_H
   2 #define __NET_CFG80211_H
   3
   4 #include <linux/netlink.h>
   5 #include <linux/skbuff.h>
   6 #include <linux/nl80211.h>
   7 #include <net/genetlink.h>
   8
   9 /*
  10  * 802.11 configuration in-kernel interface
  11  *
  12  * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
  13  */
  14
  15 /* Radiotap header iteration
  16  *   implemented in net/wireless/radiotap.c
  17  *   docs in Documentation/networking/radiotap-headers.txt
  18  */
  19 /**
  20  * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args
  21  * @rtheader: pointer to the radiotap header we are walking through
  22  * @max_length: length of radiotap header in cpu byte ordering
  23  * @this_arg_index: IEEE80211_RADIOTAP_... index of current arg
  24  * @this_arg: pointer to current radiotap arg
  25  * @arg_index: internal next argument index
  26  * @arg: internal next argument pointer
  27  * @next_bitmap: internal pointer to next present u32
  28  * @bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present
  29  */
  30
  31 struct ieee80211_radiotap_iterator {
  32         struct ieee80211_radiotap_header *rtheader;
  33         int max_length;
  34         int this_arg_index;
  35         u8 *this_arg;
  36
  37         int arg_index;
  38         u8 *arg;
  39         __le32 *next_bitmap;
  40         u32 bitmap_shifter;
  41 };
  42
  43 extern int ieee80211_radiotap_iterator_init(
  44    struct ieee80211_radiotap_iterator *iterator,
  45    struct ieee80211_radiotap_header *radiotap_header,
  46    int max_length);
  47
  48 extern int ieee80211_radiotap_iterator_next(
  49    struct ieee80211_radiotap_iterator *iterator);
  50
  51
  52  /**
  53  * struct key_params - key information
  54  *
  55  * Information about a key
  56  *
  57  * @key: key material
  58  * @key_len: length of key material
  59  * @cipher: cipher suite selector
  60  * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used
  61  *      with the get_key() callback, must be in little endian,
  62  *      length given by @seq_len.
  63  */
  64 struct key_params {
  65         u8 *key;
  66         u8 *seq;
  67         int key_len;
  68         int seq_len;
  69         u32 cipher;
  70 };
  71
  72 /**
  73  * struct beacon_parameters - beacon parameters
  74  *
  75  * Used to configure the beacon for an interface.
  76  *
  77  * @head: head portion of beacon (before TIM IE)
  78  *     or %NULL if not changed
  79  * @tail: tail portion of beacon (after TIM IE)
  80  *     or %NULL if not changed
  81  * @interval: beacon interval or zero if not changed
  82  * @dtim_period: DTIM period or zero if not changed
  83  * @head_len: length of @head
  84  * @tail_len: length of @tail
  85  */
  86 struct beacon_parameters {
  87         u8 *head, *tail;
  88         int interval, dtim_period;
  89         int head_len, tail_len;
  90 };
  91
  92 /* from net/wireless.h */
  93 struct wiphy;
  94
  95 /**
  96  * struct cfg80211_ops - backend description for wireless configuration
  97  *
  98  * This struct is registered by fullmac card drivers and/or wireless stacks
  99  * in order to handle configuration requests on their interfaces.
 100  *
 101  * All callbacks except where otherwise noted should return 0
 102  * on success or a negative error code.
 103  *
 104  * All operations are currently invoked under rtnl for consistency with the
 105  * wireless extensions but this is subject to reevaluation as soon as this
 106  * code is used more widely and we have a first user without wext.
 107  *
 108  * @add_virtual_intf: create a new virtual interface with the given name
 109  *
 110  * @del_virtual_intf: remove the virtual interface determined by ifindex.
 111  *
 112  * @change_virtual_intf: change type of virtual interface
 113  *
 114  * @add_key: add a key with the given parameters. @mac_addr will be %NULL
 115  *      when adding a group key.
 116  *
 117  * @get_key: get information about the key with the given parameters.
 118  *      @mac_addr will be %NULL when requesting information for a group
 119  *      key. All pointers given to the @callback function need not be valid
 120  *      after it returns.
 121  *
 122  * @del_key: remove a key given the @mac_addr (%NULL for a group key)
 123  *      and @key_index
 124  *
 125  * @set_default_key: set the default key on an interface
 126  *
 127  * @add_beacon: Add a beacon with given parameters, @head, @interval
 128  *      and @dtim_period will be valid, @tail is optional.
 129  * @set_beacon: Change the beacon parameters for an access point mode
 130  *      interface. This should reject the call when no beacon has been
 131  *      configured.
 132  * @del_beacon: Remove beacon configuration and stop sending the beacon.
 133  */
 134 struct cfg80211_ops {
 135         int     (*add_virtual_intf)(struct wiphy *wiphy, char *name,
 136                                     enum nl80211_iftype type);
 137         int     (*del_virtual_intf)(struct wiphy *wiphy, int ifindex);
 138         int     (*change_virtual_intf)(struct wiphy *wiphy, int ifindex,
 139                                        enum nl80211_iftype type);
 140
 141         int     (*add_key)(struct wiphy *wiphy, struct net_device *netdev,
 142                            u8 key_index, u8 *mac_addr,
 143                            struct key_params *params);
 144         int     (*get_key)(struct wiphy *wiphy, struct net_device *netdev,
 145                            u8 key_index, u8 *mac_addr, void *cookie,
 146                            void (*callback)(void *cookie, struct key_params*));
 147         int     (*del_key)(struct wiphy *wiphy, struct net_device *netdev,
 148                            u8 key_index, u8 *mac_addr);
 149         int     (*set_default_key)(struct wiphy *wiphy,
 150                                    struct net_device *netdev,
 151                                    u8 key_index);
 152
 153         int     (*add_beacon)(struct wiphy *wiphy, struct net_device *dev,
 154                               struct beacon_parameters *info);
 155         int     (*set_beacon)(struct wiphy *wiphy, struct net_device *dev,
 156                               struct beacon_parameters *info);
 157         int     (*del_beacon)(struct wiphy *wiphy, struct net_device *dev);
 158 };
 159
 160 #endif /* __NET_CFG80211_H */