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 */
251
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