2 * Copyright (c) 2001 Atsushi Onoe
3 * Copyright (c) 2002-2007 Sam Leffler, Errno Consulting
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #ifndef _NET80211_IEEE80211_PROTO_H_
29 #define _NET80211_IEEE80211_PROTO_H_
32 * 802.11 protocol implementation definitions.
35 enum ieee80211_state {
36 IEEE80211_S_INIT = 0, /* default state */
37 IEEE80211_S_SCAN = 1, /* scanning */
38 IEEE80211_S_AUTH = 2, /* try to authenticate */
39 IEEE80211_S_ASSOC = 3, /* try to assoc */
40 IEEE80211_S_CAC = 4, /* doing channel availability check */
41 IEEE80211_S_RUN = 5, /* operational (e.g. associated) */
42 IEEE80211_S_CSA = 6, /* channel switch announce pending */
43 IEEE80211_S_SLEEP = 7, /* power save */
45 #define IEEE80211_S_MAX (IEEE80211_S_SLEEP+1)
47 #define IEEE80211_SEND_MGMT(_ic,_ni,_type,_arg) \
48 ((*(_ic)->ic_send_mgmt)(_ic, _ni, _type, _arg))
51 * The formation of some management frames requires guidance to
52 * deal with legacy clients. When the client is identified as
53 * "legacy 11b" this parameter can be passed in the arg param of a
54 * IEEE80211_SEND_MGMT call.
56 #define IEEE80211_SEND_LEGACY_11B 0x1 /* legacy 11b client */
57 #define IEEE80211_SEND_LEGACY_11 0x2 /* other legacy client */
58 #define IEEE80211_SEND_LEGACY 0x3 /* any legacy client */
60 extern const char *ieee80211_mgt_subtype_name[];
61 extern const char *ieee80211_phymode_name[];
63 void ieee80211_proto_attach(struct ieee80211com *);
64 void ieee80211_proto_detach(struct ieee80211com *);
66 struct ieee80211_node;
67 int ieee80211_input(struct ieee80211com *, struct mbuf *,
68 struct ieee80211_node *, int, int, uint32_t);
69 void ieee80211_deliver_data(struct ieee80211com *,
70 struct ieee80211_node *, struct mbuf *);
71 struct mbuf *ieee80211_decap1(struct mbuf *, int *);
72 int ieee80211_setup_rates(struct ieee80211_node *ni,
73 const uint8_t *rates, const uint8_t *xrates, int flags);
74 void ieee80211_recv_mgmt(struct ieee80211com *, struct mbuf *,
75 struct ieee80211_node *, int, int, int, uint32_t);
76 int ieee80211_mgmt_output(struct ieee80211com *, struct ieee80211_node *,
77 struct mbuf *, int type);
78 struct ieee80211_bpf_params;
79 int ieee80211_raw_xmit(struct ieee80211_node *, struct mbuf *,
80 const struct ieee80211_bpf_params *);
81 int ieee80211_output(struct ifnet *, struct mbuf *,
82 struct sockaddr *, struct rtentry *);
83 int ieee80211_send_nulldata(struct ieee80211_node *);
84 int ieee80211_send_mgmt(struct ieee80211com *, struct ieee80211_node *,
86 int ieee80211_send_probereq(struct ieee80211_node *ni,
87 const uint8_t sa[IEEE80211_ADDR_LEN],
88 const uint8_t da[IEEE80211_ADDR_LEN],
89 const uint8_t bssid[IEEE80211_ADDR_LEN],
90 const uint8_t *ssid, size_t ssidlen,
91 const void *optie, size_t optielen);
92 int ieee80211_classify(struct ieee80211com *, struct mbuf *,
93 struct ieee80211_node *);
94 struct mbuf *ieee80211_encap(struct ieee80211com *, struct mbuf *,
95 struct ieee80211_node *);
97 void ieee80211_reset_erp(struct ieee80211com *);
98 void ieee80211_set_shortslottime(struct ieee80211com *, int onoff);
99 int ieee80211_iserp_rateset(struct ieee80211com *,
100 struct ieee80211_rateset *);
101 void ieee80211_set11gbasicrates(struct ieee80211_rateset *,
102 enum ieee80211_phymode);
105 * Return the size of the 802.11 header for a management or data frame.
108 ieee80211_hdrsize(const void *data)
110 const struct ieee80211_frame *wh = data;
111 int size = sizeof(struct ieee80211_frame);
113 /* NB: we don't handle control frames */
114 KASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL,
115 ("%s: control frame", __func__));
116 if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS)
117 size += IEEE80211_ADDR_LEN;
118 if (IEEE80211_QOS_HAS_SEQ(wh))
119 size += sizeof(uint16_t);
124 * Like ieee80211_hdrsize, but handles any type of frame.
127 ieee80211_anyhdrsize(const void *data)
129 const struct ieee80211_frame *wh = data;
131 if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) {
132 switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
133 case IEEE80211_FC0_SUBTYPE_CTS:
134 case IEEE80211_FC0_SUBTYPE_ACK:
135 return sizeof(struct ieee80211_frame_ack);
136 case IEEE80211_FC0_SUBTYPE_BAR:
137 return sizeof(struct ieee80211_frame_bar);
139 return sizeof(struct ieee80211_frame_min);
141 return ieee80211_hdrsize(data);
145 * Template for an in-kernel authenticator. Authenticators
146 * register with the protocol code and are typically loaded
147 * as separate modules as needed.
149 struct ieee80211_authenticator {
150 const char *ia_name; /* printable name */
151 int (*ia_attach)(struct ieee80211com *);
152 void (*ia_detach)(struct ieee80211com *);
153 void (*ia_node_join)(struct ieee80211com *,
154 struct ieee80211_node *);
155 void (*ia_node_leave)(struct ieee80211com *,
156 struct ieee80211_node *);
158 void ieee80211_authenticator_register(int type,
159 const struct ieee80211_authenticator *);
160 void ieee80211_authenticator_unregister(int type);
161 const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth);
165 * Template for an MAC ACL policy module. Such modules
166 * register with the protocol code and are passed the sender's
167 * address of each received frame for validation.
169 struct ieee80211_aclator {
170 const char *iac_name; /* printable name */
171 int (*iac_attach)(struct ieee80211com *);
172 void (*iac_detach)(struct ieee80211com *);
173 int (*iac_check)(struct ieee80211com *,
174 const uint8_t mac[IEEE80211_ADDR_LEN]);
175 int (*iac_add)(struct ieee80211com *,
176 const uint8_t mac[IEEE80211_ADDR_LEN]);
177 int (*iac_remove)(struct ieee80211com *,
178 const uint8_t mac[IEEE80211_ADDR_LEN]);
179 int (*iac_flush)(struct ieee80211com *);
180 int (*iac_setpolicy)(struct ieee80211com *, int);
181 int (*iac_getpolicy)(struct ieee80211com *);
182 int (*iac_setioctl)(struct ieee80211com *, struct ieee80211req *);
183 int (*iac_getioctl)(struct ieee80211com *, struct ieee80211req *);
185 void ieee80211_aclator_register(const struct ieee80211_aclator *);
186 void ieee80211_aclator_unregister(const struct ieee80211_aclator *);
187 const struct ieee80211_aclator *ieee80211_aclator_get(const char *name);
189 /* flags for ieee80211_fix_rate() */
190 #define IEEE80211_F_DOSORT 0x00000001 /* sort rate list */
191 #define IEEE80211_F_DOFRATE 0x00000002 /* use fixed rate */
192 #define IEEE80211_F_DONEGO 0x00000004 /* calc negotiated rate */
193 #define IEEE80211_F_DODEL 0x00000008 /* delete ignore rate */
194 #define IEEE80211_F_DOBRS 0x00000010 /* check basic rate set */
195 #define IEEE80211_F_JOIN 0x00000020 /* sta joining our bss */
196 int ieee80211_fix_rate(struct ieee80211_node *,
197 struct ieee80211_rateset *, int);
205 uint8_t wmep_logcwmin; /* log2(cwmin) */
206 uint8_t wmep_logcwmax; /* log2(cwmax) */
207 uint8_t wmep_txopLimit;
208 uint8_t wmep_noackPolicy; /* 0 (ack), 1 (no ack) */
210 #define IEEE80211_TXOP_TO_US(_txop) ((_txop)<<5)
211 #define IEEE80211_US_TO_TXOP(_us) ((_us)>>5)
213 struct chanAccParams {
214 uint8_t cap_info; /* version of the current set */
215 struct wmeParams cap_wmeParams[WME_NUM_AC];
218 struct ieee80211_wme_state {
220 #define WME_F_AGGRMODE 0x00000001 /* STATUS: WME agressive mode */
221 u_int wme_hipri_traffic; /* VI/VO frames in beacon interval */
222 u_int wme_hipri_switch_thresh;/* agressive mode switch thresh */
223 u_int wme_hipri_switch_hysteresis;/* agressive mode switch hysteresis */
225 struct wmeParams wme_params[4]; /* from assoc resp for each AC*/
226 struct chanAccParams wme_wmeChanParams; /* WME params applied to self */
227 struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */
228 struct chanAccParams wme_chanParams; /* params applied to self */
229 struct chanAccParams wme_bssChanParams; /* params bcast to stations */
231 int (*wme_update)(struct ieee80211com *);
234 void ieee80211_wme_initparams(struct ieee80211com *);
235 void ieee80211_wme_updateparams(struct ieee80211com *);
236 void ieee80211_wme_updateparams_locked(struct ieee80211com *);
238 #define ieee80211_new_state(_ic, _nstate, _arg) \
239 (((_ic)->ic_newstate)((_ic), (_nstate), (_arg)))
240 int ieee80211_init(struct ieee80211com *, int forcescan);
241 void ieee80211_dturbo_switch(struct ieee80211com *, int newflags);
242 void ieee80211_beacon_miss(struct ieee80211com *);
243 void ieee80211_print_essid(const uint8_t *, int);
244 void ieee80211_dump_pkt(struct ieee80211com *,
245 const uint8_t *, int, int, int);
247 extern const char *ieee80211_opmode_name[];
248 extern const char *ieee80211_state_name[IEEE80211_S_MAX];
249 extern const char *ieee80211_wme_acnames[];
252 * Beacon frames constructed by ieee80211_beacon_alloc
253 * have the following structure filled in so drivers
254 * can update the frame later w/ minimal overhead.
256 struct ieee80211_beacon_offsets {
257 uint8_t bo_flags[4]; /* update/state flags */
258 uint16_t *bo_caps; /* capabilities */
259 uint8_t *bo_cfp; /* start of CFParms element */
260 uint8_t *bo_tim; /* start of atim/dtim */
261 uint8_t *bo_wme; /* start of WME parameters */
262 uint8_t *bo_tim_trailer;/* start of fixed-size trailer */
263 uint16_t bo_tim_len; /* atim/dtim length in bytes */
264 uint16_t bo_tim_trailer_len;/* tim trailer length in bytes */
265 uint8_t *bo_erp; /* start of ERP element */
266 uint8_t *bo_htinfo; /* start of HT info element */
267 uint8_t *bo_appie; /* start of AppIE element */
268 uint16_t bo_appie_len; /* AppIE length in bytes */
269 uint16_t bo_csa_trailer_len;;
270 uint8_t *bo_csa; /* start of CSA element */
272 struct mbuf *ieee80211_beacon_alloc(struct ieee80211_node *,
273 struct ieee80211_beacon_offsets *);
276 * Beacon frame updates are signaled through calls to ic_update_beacon
277 * with one of the IEEE80211_BEACON_* tokens defined below. For devices
278 * that construct beacon frames on the host this can trigger a rebuild
279 * or defer the processing. For devices that offload beacon frame
280 * handling this callback can be used to signal a rebuild. The bo_flags
281 * array in the ieee80211_beacon_offsets structure is intended to record
282 * deferred processing requirements; ieee80211_beacon_update uses the
283 * state to optimize work. Since this structure is owned by the driver
284 * and not visible to the 802.11 layer drivers must supply an ic_update_beacon
285 * callback that marks the flag bits and schedules (as necessary) an update.
288 IEEE80211_BEACON_CAPS = 0, /* capabilities */
289 IEEE80211_BEACON_TIM = 1, /* DTIM/ATIM */
290 IEEE80211_BEACON_WME = 2,
291 IEEE80211_BEACON_ERP = 3, /* Extended Rate Phy */
292 IEEE80211_BEACON_HTINFO = 4, /* HT Information */
293 IEEE80211_BEACON_APPIE = 5, /* Application IE's */
294 IEEE80211_BEACON_CFP = 6, /* CFParms */
295 IEEE80211_BEACON_CSA = 7, /* Channel Switch Announcement */
297 int ieee80211_beacon_update(struct ieee80211_node *,
298 struct ieee80211_beacon_offsets *, struct mbuf *, int mcast);
301 * Notification methods called from the 802.11 state machine.
302 * Note that while these are defined here, their implementation
305 void ieee80211_notify_node_join(struct ieee80211com *,
306 struct ieee80211_node *, int newassoc);
307 void ieee80211_notify_node_leave(struct ieee80211com *,
308 struct ieee80211_node *);
309 void ieee80211_notify_scan_done(struct ieee80211com *);
310 #endif /* _NET80211_IEEE80211_PROTO_H_ */