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 /**
  93  * enum station_flags - station flags
  94  *
  95  * Station capability flags. Note that these must be the bits
  96  * according to the nl80211 flags.
  97  *
  98  * @STATION_FLAG_CHANGED: station flags were changed
  99  * @STATION_FLAG_AUTHORIZED: station is authorized to send frames (802.1X)
 100  * @STATION_FLAG_SHORT_PREAMBLE: station is capable of receiving frames
 101  *      with short preambles
 102  * @STATION_FLAG_WME: station is WME/QoS capable
 103  */
 104 enum station_flags {
 105         STATION_FLAG_CHANGED            = 1<<0,
 106         STATION_FLAG_AUTHORIZED         = 1<<NL80211_STA_FLAG_AUTHORIZED,
 107         STATION_FLAG_SHORT_PREAMBLE     = 1<<NL80211_STA_FLAG_SHORT_PREAMBLE,
 108         STATION_FLAG_WME                = 1<<NL80211_STA_FLAG_WME,
 109 };
 110
 111 /**
 112  * struct station_parameters - station parameters
 113  *
 114  * Used to change and create a new station.
 115  *
 116  * @vlan: vlan interface station should belong to
 117  * @supported_rates: supported rates in IEEE 802.11 format
 118  *      (or NULL for no change)
 119  * @supported_rates_len: number of supported rates
 120  * @station_flags: station flags (see &enum station_flags)
 121  * @listen_interval: listen interval or -1 for no change
 122  * @aid: AID or zero for no change
 123  */
 124 struct station_parameters {
 125         u8 *supported_rates;
 126         struct net_device *vlan;
 127         u32 station_flags;
 128         int listen_interval;
 129         u16 aid;
 130         u8 supported_rates_len;
 131 };
 132
 133 /**
 134  * enum station_stats_flags - station statistics flags
 135  *
 136  * Used by the driver to indicate which info in &struct station_stats
 137  * it has filled in during get_station().
 138  *
 139  * @STATION_STAT_INACTIVE_TIME: @inactive_time filled
 140  * @STATION_STAT_RX_BYTES: @rx_bytes filled
 141  * @STATION_STAT_TX_BYTES: @tx_bytes filled
 142  */
 143 enum station_stats_flags {
 144         STATION_STAT_INACTIVE_TIME      = 1<<0,
 145         STATION_STAT_RX_BYTES           = 1<<1,
 146         STATION_STAT_TX_BYTES           = 1<<2,
 147 };
 148
 149 /**
 150  * struct station_stats - station statistics
 151  *
 152  * Station information filled by driver for get_station().
 153  *
 154  * @filled: bitflag of flags from &enum station_stats_flags
 155  * @inactive_time: time since last station activity (tx/rx) in milliseconds
 156  * @rx_bytes: bytes received from this station
 157  * @tx_bytes: bytes transmitted to this station
 158  */
 159 struct station_stats {
 160         u32 filled;
 161         u32 inactive_time;
 162         u32 rx_bytes;
 163         u32 tx_bytes;
 164 };
 165
 166 /* from net/wireless.h */
 167 struct wiphy;
 168
 169 /**
 170  * struct cfg80211_ops - backend description for wireless configuration
 171  *
 172  * This struct is registered by fullmac card drivers and/or wireless stacks
 173  * in order to handle configuration requests on their interfaces.
 174  *
 175  * All callbacks except where otherwise noted should return 0
 176  * on success or a negative error code.
 177  *
 178  * All operations are currently invoked under rtnl for consistency with the
 179  * wireless extensions but this is subject to reevaluation as soon as this
 180  * code is used more widely and we have a first user without wext.
 181  *
 182  * @add_virtual_intf: create a new virtual interface with the given name
 183  *
 184  * @del_virtual_intf: remove the virtual interface determined by ifindex.
 185  *
 186  * @change_virtual_intf: change type of virtual interface
 187  *
 188  * @add_key: add a key with the given parameters. @mac_addr will be %NULL
 189  *      when adding a group key.
 190  *
 191  * @get_key: get information about the key with the given parameters.
 192  *      @mac_addr will be %NULL when requesting information for a group
 193  *      key. All pointers given to the @callback function need not be valid
 194  *      after it returns.
 195  *
 196  * @del_key: remove a key given the @mac_addr (%NULL for a group key)
 197  *      and @key_index
 198  *
 199  * @set_default_key: set the default key on an interface
 200  *
 201  * @add_beacon: Add a beacon with given parameters, @head, @interval
 202  *      and @dtim_period will be valid, @tail is optional.
 203  * @set_beacon: Change the beacon parameters for an access point mode
 204  *      interface. This should reject the call when no beacon has been
 205  *      configured.
 206  * @del_beacon: Remove beacon configuration and stop sending the beacon.
 207  *
 208  * @add_station: Add a new station.
 209  *
 210  * @del_station: Remove a station; @mac may be NULL to remove all stations.
 211  *
 212  * @change_station: Modify a given station.
 213  */
 214 struct cfg80211_ops {
 215         int     (*add_virtual_intf)(struct wiphy *wiphy, char *name,
 216                                     enum nl80211_iftype type);
 217         int     (*del_virtual_intf)(struct wiphy *wiphy, int ifindex);
 218         int     (*change_virtual_intf)(struct wiphy *wiphy, int ifindex,
 219                                        enum nl80211_iftype type);
 220
 221         int     (*add_key)(struct wiphy *wiphy, struct net_device *netdev,
 222                            u8 key_index, u8 *mac_addr,
 223                            struct key_params *params);
 224         int     (*get_key)(struct wiphy *wiphy, struct net_device *netdev,
 225                            u8 key_index, u8 *mac_addr, void *cookie,
 226                            void (*callback)(void *cookie, struct key_params*));
 227         int     (*del_key)(struct wiphy *wiphy, struct net_device *netdev,
 228                            u8 key_index, u8 *mac_addr);
 229         int     (*set_default_key)(struct wiphy *wiphy,
 230                                    struct net_device *netdev,
 231                                    u8 key_index);
 232
 233         int     (*add_beacon)(struct wiphy *wiphy, struct net_device *dev,
 234                               struct beacon_parameters *info);
 235         int     (*set_beacon)(struct wiphy *wiphy, struct net_device *dev,
 236                               struct beacon_parameters *info);
 237         int     (*del_beacon)(struct wiphy *wiphy, struct net_device *dev);
 238
 239
 240         int     (*add_station)(struct wiphy *wiphy, struct net_device *dev,
 241                                u8 *mac, struct station_parameters *params);
 242         int     (*del_station)(struct wiphy *wiphy, struct net_device *dev,
 243                                u8 *mac);
 244         int     (*change_station)(struct wiphy *wiphy, struct net_device *dev,
 245                                   u8 *mac, struct station_parameters *params);
 246         int     (*get_station)(struct wiphy *wiphy, struct net_device *dev,
 247                                u8 *mac, struct station_stats *stats);
 248 };
 249
 250 #endif /* __NET_CFG80211_H */