1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
/*-
* Copyright (c) 2001 Atsushi Onoe
* Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _NET80211_IEEE80211_PROTO_H_
#define _NET80211_IEEE80211_PROTO_H_
/*
* 802.11 protocol implementation definitions.
*/
enum ieee80211_state {
IEEE80211_S_INIT = 0, /* default state */
IEEE80211_S_SCAN = 1, /* scanning */
IEEE80211_S_AUTH = 2, /* try to authenticate */
IEEE80211_S_ASSOC = 3, /* try to assoc */
IEEE80211_S_RUN = 4, /* associated */
};
#define IEEE80211_S_MAX (IEEE80211_S_RUN+1)
#define IEEE80211_SEND_MGMT(_ic,_ni,_type,_arg) \
((*(_ic)->ic_send_mgmt)(_ic, _ni, _type, _arg))
extern const char *ieee80211_mgt_subtype_name[];
extern const char *ieee80211_phymode_name[];
void ieee80211_proto_attach(struct ieee80211com *);
void ieee80211_proto_detach(struct ieee80211com *);
struct ieee80211_node;
int ieee80211_input(struct ieee80211com *, struct mbuf *,
struct ieee80211_node *, int, u_int32_t);
int ieee80211_setup_rates(struct ieee80211_node *ni,
const u_int8_t *rates, const u_int8_t *xrates, int flags);
void ieee80211_saveie(u_int8_t **, const u_int8_t *);
void ieee80211_recv_mgmt(struct ieee80211com *, struct mbuf *,
struct ieee80211_node *, int, int, u_int32_t);
int ieee80211_send_nulldata(struct ieee80211_node *);
int ieee80211_send_probereq(struct ieee80211_node *ni,
const u_int8_t sa[IEEE80211_ADDR_LEN],
const u_int8_t da[IEEE80211_ADDR_LEN],
const u_int8_t bssid[IEEE80211_ADDR_LEN],
const u_int8_t *ssid, size_t ssidlen,
const void *optie, size_t optielen);
int ieee80211_send_mgmt(struct ieee80211com *, struct ieee80211_node *,
int, int);
int ieee80211_classify(struct ieee80211com *, struct mbuf *,
struct ieee80211_node *);
struct mbuf *ieee80211_encap(struct ieee80211com *, struct mbuf *,
struct ieee80211_node *);
void ieee80211_pwrsave(struct ieee80211com *, struct ieee80211_node *,
struct mbuf *);
void ieee80211_reset_erp(struct ieee80211com *);
void ieee80211_set_shortslottime(struct ieee80211com *, int onoff);
int ieee80211_iserp_rateset(struct ieee80211com *,
struct ieee80211_rateset *);
void ieee80211_set11gbasicrates(struct ieee80211_rateset *,
enum ieee80211_phymode);
/*
* Return the size of the 802.11 header for a management or data frame.
*/
static __inline int
ieee80211_hdrsize(const void *data)
{
const struct ieee80211_frame *wh = data;
int size = sizeof(struct ieee80211_frame);
/* NB: we don't handle control frames */
KASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL,
("%s: control frame", __func__));
if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS)
size += IEEE80211_ADDR_LEN;
if (IEEE80211_QOS_HAS_SEQ(wh))
size += sizeof(u_int16_t);
return size;
}
/*
* Return the size of the 802.11 header; handles any type of frame.
*/
static __inline int
ieee80211_anyhdrsize(const void *data)
{
const struct ieee80211_frame *wh = data;
if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) {
switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
case IEEE80211_FC0_SUBTYPE_CTS:
case IEEE80211_FC0_SUBTYPE_ACK:
return sizeof(struct ieee80211_frame_ack);
}
return sizeof(struct ieee80211_frame_min);
} else
return ieee80211_hdrsize(data);
}
/*
* Template for an in-kernel authenticator. Authenticators
* register with the protocol code and are typically loaded
* as separate modules as needed.
*/
struct ieee80211_authenticator {
const char *ia_name; /* printable name */
int (*ia_attach)(struct ieee80211com *);
void (*ia_detach)(struct ieee80211com *);
void (*ia_node_join)(struct ieee80211com *,
struct ieee80211_node *);
void (*ia_node_leave)(struct ieee80211com *,
struct ieee80211_node *);
};
void ieee80211_authenticator_register(int type,
const struct ieee80211_authenticator *);
void ieee80211_authenticator_unregister(int type);
const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth);
struct ieee80211req;
/*
* Template for an MAC ACL policy module. Such modules
* register with the protocol code and are passed the sender's
* address of each received frame for validation.
*/
struct ieee80211_aclator {
const char *iac_name; /* printable name */
int (*iac_attach)(struct ieee80211com *);
void (*iac_detach)(struct ieee80211com *);
int (*iac_check)(struct ieee80211com *,
const u_int8_t mac[IEEE80211_ADDR_LEN]);
int (*iac_add)(struct ieee80211com *,
const u_int8_t mac[IEEE80211_ADDR_LEN]);
int (*iac_remove)(struct ieee80211com *,
const u_int8_t mac[IEEE80211_ADDR_LEN]);
int (*iac_flush)(struct ieee80211com *);
int (*iac_setpolicy)(struct ieee80211com *, int);
int (*iac_getpolicy)(struct ieee80211com *);
int (*iac_setioctl)(struct ieee80211com *, struct ieee80211req *);
int (*iac_getioctl)(struct ieee80211com *, struct ieee80211req *);
};
void ieee80211_aclator_register(const struct ieee80211_aclator *);
void ieee80211_aclator_unregister(const struct ieee80211_aclator *);
const struct ieee80211_aclator *ieee80211_aclator_get(const char *name);
/* flags for ieee80211_fix_rate() */
#define IEEE80211_F_DOSORT 0x00000001 /* sort rate list */
#define IEEE80211_F_DOFRATE 0x00000002 /* use fixed rate */
#define IEEE80211_F_DONEGO 0x00000004 /* calc negotiated rate */
#define IEEE80211_F_DODEL 0x00000008 /* delete ignore rate */
int ieee80211_fix_rate(struct ieee80211_node *, int);
/*
* WME/WMM support.
*/
struct wmeParams {
u_int8_t wmep_acm;
u_int8_t wmep_aifsn;
u_int8_t wmep_logcwmin; /* log2(cwmin) */
u_int8_t wmep_logcwmax; /* log2(cwmax) */
u_int8_t wmep_txopLimit;
u_int8_t wmep_noackPolicy; /* 0 (ack), 1 (no ack) */
};
#define IEEE80211_TXOP_TO_US(_txop) ((_txop)<<5)
#define IEEE80211_US_TO_TXOP(_us) ((_us)>>5)
struct chanAccParams {
u_int8_t cap_info; /* version of the current set */
struct wmeParams cap_wmeParams[WME_NUM_AC];
};
struct ieee80211_wme_state {
u_int wme_flags;
#define WME_F_AGGRMODE 0x00000001 /* STATUS: WME agressive mode */
u_int wme_hipri_traffic; /* VI/VO frames in beacon interval */
u_int wme_hipri_switch_thresh;/* agressive mode switch thresh */
u_int wme_hipri_switch_hysteresis;/* agressive mode switch hysteresis */
struct wmeParams wme_params[4]; /* from assoc resp for each AC*/
struct chanAccParams wme_wmeChanParams; /* WME params applied to self */
struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */
struct chanAccParams wme_chanParams; /* params applied to self */
struct chanAccParams wme_bssChanParams; /* params bcast to stations */
int (*wme_update)(struct ieee80211com *);
};
void ieee80211_wme_initparams(struct ieee80211com *);
void ieee80211_wme_updateparams(struct ieee80211com *);
void ieee80211_wme_updateparams_locked(struct ieee80211com *);
#define ieee80211_new_state(_ic, _nstate, _arg) \
(((_ic)->ic_newstate)((_ic), (_nstate), (_arg)))
void ieee80211_print_essid(const u_int8_t *, int);
void ieee80211_dump_pkt(const u_int8_t *, int, int, int);
extern const char *ieee80211_state_name[IEEE80211_S_MAX];
extern const char *ieee80211_wme_acnames[];
/*
* Beacon frames constructed by ieee80211_beacon_alloc
* have the following structure filled in so drivers
* can update the frame later w/ minimal overhead.
*/
struct ieee80211_beacon_offsets {
u_int16_t *bo_caps; /* capabilities */
u_int8_t *bo_tim; /* start of atim/dtim */
u_int8_t *bo_wme; /* start of WME parameters */
u_int8_t *bo_trailer; /* start of fixed-size trailer */
u_int16_t bo_tim_len; /* atim/dtim length in bytes */
u_int16_t bo_trailer_len; /* trailer length in bytes */
};
struct mbuf *ieee80211_beacon_alloc(struct ieee80211com *,
struct ieee80211_node *, struct ieee80211_beacon_offsets *);
int ieee80211_beacon_update(struct ieee80211com *,
struct ieee80211_node *, struct ieee80211_beacon_offsets *,
struct mbuf *, int broadcast);
/*
* Notification methods called from the 802.11 state machine.
* Note that while these are defined here, their implementation
* is OS-specific.
*/
void ieee80211_notify_node_join(struct ieee80211com *,
struct ieee80211_node *, int newassoc);
void ieee80211_notify_node_leave(struct ieee80211com *,
struct ieee80211_node *);
void ieee80211_notify_scan_done(struct ieee80211com *);
#endif /* _NET80211_IEEE80211_PROTO_H_ */
|
