1 fa325e9b 2020-01-10 cross /*
  2 17b19538 2008-07-24 rsc  * IEEE 802.11.
  3 17b19538 2008-07-24 rsc  */
  4 17b19538 2008-07-24 rsc 
  5 17b19538 2008-07-24 rsc #include <u.h>
  6 17b19538 2008-07-24 rsc #include <libc.h>
  7 17b19538 2008-07-24 rsc #include <ip.h>
  8 17b19538 2008-07-24 rsc #include "dat.h"
  9 17b19538 2008-07-24 rsc #include "protos.h"
 10 17b19538 2008-07-24 rsc 
 11 17b19538 2008-07-24 rsc enum
 12 17b19538 2008-07-24 rsc {
 13 17b19538 2008-07-24 rsc 	Tmgmt = 0,
 14 17b19538 2008-07-24 rsc 	Tctl,
 15 17b19538 2008-07-24 rsc 	Tdata,
 16 17b19538 2008-07-24 rsc 
 17 17b19538 2008-07-24 rsc 	CtlPoll = 0xA,
 18 17b19538 2008-07-24 rsc 	CtlRts,
 19 17b19538 2008-07-24 rsc 	CtlCts,
 20 17b19538 2008-07-24 rsc 	CtlAck,
 21 17b19538 2008-07-24 rsc 	CtlCfEnd,
 22 17b19538 2008-07-24 rsc 	CtlCfEndAck,
 23 17b19538 2008-07-24 rsc 
 24 17b19538 2008-07-24 rsc 	Data = 0,
 25 17b19538 2008-07-24 rsc 	DataCfAck,
 26 17b19538 2008-07-24 rsc 	DataCfPoll,
 27 17b19538 2008-07-24 rsc 	DataCfAckPoll,
 28 17b19538 2008-07-24 rsc 	Nodata,
 29 17b19538 2008-07-24 rsc 	NodataCfAck,
 30 17b19538 2008-07-24 rsc 	NodataCfPoll,
 31 17b19538 2008-07-24 rsc 	NodataCfAckPoll,
 32 fa325e9b 2020-01-10 cross 
 33 17b19538 2008-07-24 rsc 	FlagTods = 0x1,
 34 17b19538 2008-07-24 rsc 	FlagFromds = 0x2,
 35 17b19538 2008-07-24 rsc 	FlagMoreflag = 0x4,
 36 17b19538 2008-07-24 rsc 	FlagRetry = 0x8,
 37 17b19538 2008-07-24 rsc 	FlagPowerMgmt = 0x10,
 38 17b19538 2008-07-24 rsc 	FlagMoreData = 0x20,
 39 17b19538 2008-07-24 rsc 	FlagWep = 0x40,
 40 17b19538 2008-07-24 rsc 	FlagOrder = 0x80,
 41 fa325e9b 2020-01-10 cross 
 42 17b19538 2008-07-24 rsc 	ProtoNone = 0,
 43 17b19538 2008-07-24 rsc 	ProtoLlc,
 44 17b19538 2008-07-24 rsc };
 45 17b19538 2008-07-24 rsc 
 46 17b19538 2008-07-24 rsc static Mux p_mux[] =
 47 17b19538 2008-07-24 rsc {
 48 17b19538 2008-07-24 rsc 	{ "llc", ProtoLlc },
 49 17b19538 2008-07-24 rsc 	{ 0 }
 50 17b19538 2008-07-24 rsc };
 51 17b19538 2008-07-24 rsc 
 52 17b19538 2008-07-24 rsc typedef struct Hdr Hdr;
 53 17b19538 2008-07-24 rsc struct Hdr
 54 17b19538 2008-07-24 rsc {
 55 17b19538 2008-07-24 rsc 	uchar vers;
 56 17b19538 2008-07-24 rsc 	uchar type;
 57 17b19538 2008-07-24 rsc 	uchar subtype;
 58 17b19538 2008-07-24 rsc 	uchar flags;
 59 17b19538 2008-07-24 rsc 	ushort dur;
 60 17b19538 2008-07-24 rsc 	uchar aid;
 61 17b19538 2008-07-24 rsc 	uchar ra[6];
 62 17b19538 2008-07-24 rsc 	uchar ta[6];
 63 17b19538 2008-07-24 rsc 	uchar bssid[6];
 64 17b19538 2008-07-24 rsc 	uchar sa[6];
 65 17b19538 2008-07-24 rsc 	uchar da[6];
 66 17b19538 2008-07-24 rsc 	ushort seq;
 67 17b19538 2008-07-24 rsc 	int proto;
 68 17b19538 2008-07-24 rsc 	int hdrlen;
 69 17b19538 2008-07-24 rsc };
 70 17b19538 2008-07-24 rsc 
 71 17b19538 2008-07-24 rsc static int
 72 17b19538 2008-07-24 rsc unpackhdr(uchar *p, uchar *ep, Hdr *h)
 73 17b19538 2008-07-24 rsc {
 74 17b19538 2008-07-24 rsc 	if(p+2 > ep)
 75 17b19538 2008-07-24 rsc 		return -1;
 76 17b19538 2008-07-24 rsc 	h->vers = p[0]&3;
 77 17b19538 2008-07-24 rsc 	if(h->vers != 0){
 78 17b19538 2008-07-24 rsc 		h->hdrlen = 2;
 79 17b19538 2008-07-24 rsc 		return -1;
 80 17b19538 2008-07-24 rsc 	}
 81 17b19538 2008-07-24 rsc 	h->type = (p[0]>>2)&3;
 82 17b19538 2008-07-24 rsc 	h->subtype = (p[0]>>4)&15;
 83 17b19538 2008-07-24 rsc 	h->flags = p[1];
 84 17b19538 2008-07-24 rsc 	h->hdrlen = 2;
 85 17b19538 2008-07-24 rsc 
 86 17b19538 2008-07-24 rsc 	if(h->vers != 0)
 87 17b19538 2008-07-24 rsc 		return 0;
 88 fa325e9b 2020-01-10 cross 
 89 17b19538 2008-07-24 rsc 	switch(h->type){
 90 17b19538 2008-07-24 rsc 	case Tmgmt:
 91 17b19538 2008-07-24 rsc 		// fc dur da sa bssid seq
 92 17b19538 2008-07-24 rsc 		if(p+2+2+6+6+6+2 > ep)
 93 17b19538 2008-07-24 rsc 			return -1;
 94 17b19538 2008-07-24 rsc 		h->hdrlen = 24;
 95 17b19538 2008-07-24 rsc 		h->dur = LittleS(p+2);
 96 17b19538 2008-07-24 rsc 		memmove(h->da, p+4, 6);
 97 17b19538 2008-07-24 rsc 		memmove(h->sa, p+10, 6);
 98 17b19538 2008-07-24 rsc 		memmove(h->bssid, p+16, 6);
 99 17b19538 2008-07-24 rsc 		h->seq = LittleS(p+22);
100 17b19538 2008-07-24 rsc 		break;
101 fa325e9b 2020-01-10 cross 
102 17b19538 2008-07-24 rsc 	case Tctl:
103 17b19538 2008-07-24 rsc 		switch(h->subtype){
104 17b19538 2008-07-24 rsc 		case CtlPoll:
105 17b19538 2008-07-24 rsc 			// fc aid bssid ta
106 17b19538 2008-07-24 rsc 			if(p+2+2+6+6 > ep)
107 17b19538 2008-07-24 rsc 				return -1;
108 17b19538 2008-07-24 rsc 			h->hdrlen = 16;
109 17b19538 2008-07-24 rsc 			h->aid = LittleS(p+2);
110 17b19538 2008-07-24 rsc 			memmove(h->bssid, p+4, 6);
111 17b19538 2008-07-24 rsc 			memmove(h->ta, p+10, 6);
112 17b19538 2008-07-24 rsc 			break;
113 fa325e9b 2020-01-10 cross 
114 17b19538 2008-07-24 rsc 		case CtlRts:
115 17b19538 2008-07-24 rsc 			// fc dur ra ta
116 17b19538 2008-07-24 rsc 			if(p+2+2+6+6 > ep)
117 17b19538 2008-07-24 rsc 				return -1;
118 17b19538 2008-07-24 rsc 			h->hdrlen = 16;
119 17b19538 2008-07-24 rsc 			h->dur = LittleS(p+2);
120 17b19538 2008-07-24 rsc 			memmove(h->ra, p+4, 6);
121 17b19538 2008-07-24 rsc 			memmove(h->ta, p+10, 6);
122 17b19538 2008-07-24 rsc 			break;
123 fa325e9b 2020-01-10 cross 
124 17b19538 2008-07-24 rsc 		case CtlCts:
125 17b19538 2008-07-24 rsc 		case CtlAck:
126 17b19538 2008-07-24 rsc 			// fc dur ra
127 17b19538 2008-07-24 rsc 			if(p+2+2+6 > ep)
128 17b19538 2008-07-24 rsc 				return -1;
129 17b19538 2008-07-24 rsc 			h->hdrlen = 10;
130 17b19538 2008-07-24 rsc 			h->dur = LittleS(p+2);
131 17b19538 2008-07-24 rsc 			memmove(h->ra, p+4, 6);
132 17b19538 2008-07-24 rsc 			break;
133 fa325e9b 2020-01-10 cross 
134 17b19538 2008-07-24 rsc 		case CtlCfEnd:
135 17b19538 2008-07-24 rsc 		case CtlCfEndAck:
136 17b19538 2008-07-24 rsc 			// fc dur ra bssid
137 17b19538 2008-07-24 rsc 			if(p+2+2+6+6 > ep)
138 17b19538 2008-07-24 rsc 				return -1;
139 17b19538 2008-07-24 rsc 			h->hdrlen = 16;
140 17b19538 2008-07-24 rsc 			h->dur = LittleS(p+2);
141 17b19538 2008-07-24 rsc 			memmove(h->ra, p+4, 6);
142 17b19538 2008-07-24 rsc 			memmove(h->bssid, p+10, 6);
143 17b19538 2008-07-24 rsc 			break;
144 17b19538 2008-07-24 rsc 		}
145 17b19538 2008-07-24 rsc 		break;
146 fa325e9b 2020-01-10 cross 
147 17b19538 2008-07-24 rsc 	case Tdata:
148 17b19538 2008-07-24 rsc 		if(p+24 > ep)
149 17b19538 2008-07-24 rsc 			return -1;
150 17b19538 2008-07-24 rsc 		h->hdrlen = 24;
151 17b19538 2008-07-24 rsc 		h->dur = LittleS(p+2);	// ??? maybe
152 17b19538 2008-07-24 rsc 		// Also, what is at p+22?
153 17b19538 2008-07-24 rsc 
154 17b19538 2008-07-24 rsc 		switch(h->flags&(FlagFromds|FlagTods)){
155 17b19538 2008-07-24 rsc 		case 0:
156 17b19538 2008-07-24 rsc 			memmove(h->da, p+4, 6);
157 17b19538 2008-07-24 rsc 			memmove(h->sa, p+10, 6);
158 17b19538 2008-07-24 rsc 			memmove(h->bssid, p+16, 6);
159 17b19538 2008-07-24 rsc 			break;
160 17b19538 2008-07-24 rsc 		case FlagFromds:
161 17b19538 2008-07-24 rsc 			memmove(h->da, p+4, 6);
162 17b19538 2008-07-24 rsc 			memmove(h->bssid, p+10, 6);
163 17b19538 2008-07-24 rsc 			memmove(h->sa, p+16, 6);
164 17b19538 2008-07-24 rsc 			break;
165 17b19538 2008-07-24 rsc 		case FlagTods:
166 17b19538 2008-07-24 rsc 			memmove(h->bssid, p+4, 6);
167 17b19538 2008-07-24 rsc 			memmove(h->sa, p+10, 6);
168 17b19538 2008-07-24 rsc 			memmove(h->da, p+16, 6);
169 17b19538 2008-07-24 rsc 			break;
170 17b19538 2008-07-24 rsc 		case FlagFromds|FlagTods:
171 17b19538 2008-07-24 rsc 			if(p+30 > ep)
172 17b19538 2008-07-24 rsc 				return -1;
173 17b19538 2008-07-24 rsc 			h->hdrlen = 30;
174 17b19538 2008-07-24 rsc 			memmove(h->ra, p+4, 6);
175 17b19538 2008-07-24 rsc 			memmove(h->ta, p+10, 6);
176 17b19538 2008-07-24 rsc 			memmove(h->da, p+16, 6);
177 17b19538 2008-07-24 rsc 			memmove(h->sa, p+24, 6);	// 24 sic
178 17b19538 2008-07-24 rsc 			break;
179 17b19538 2008-07-24 rsc 		}
180 17b19538 2008-07-24 rsc 		p += h->hdrlen;
181 17b19538 2008-07-24 rsc 		h->proto = ProtoNone;
182 17b19538 2008-07-24 rsc 		if(!(h->flags&FlagWep))
183 17b19538 2008-07-24 rsc 			h->proto = ProtoLlc;
184 17b19538 2008-07-24 rsc 		break;
185 17b19538 2008-07-24 rsc 	}
186 fa325e9b 2020-01-10 cross 	return 0;
187 17b19538 2008-07-24 rsc }
188 17b19538 2008-07-24 rsc 
189 17b19538 2008-07-24 rsc enum
190 17b19538 2008-07-24 rsc {
191 17b19538 2008-07-24 rsc 	Os,
192 17b19538 2008-07-24 rsc 	Od,
193 17b19538 2008-07-24 rsc 	Ot,
194 17b19538 2008-07-24 rsc 	Or,
195 17b19538 2008-07-24 rsc 	Obssid,
196 17b19538 2008-07-24 rsc 	Oa,
197 17b19538 2008-07-24 rsc 	Opr,
198 17b19538 2008-07-24 rsc };
199 17b19538 2008-07-24 rsc 
200 17b19538 2008-07-24 rsc static Field p_fields[] =
201 17b19538 2008-07-24 rsc {
202 17b19538 2008-07-24 rsc 	{ "s",	Fether,	Os,	"source address" },
203 17b19538 2008-07-24 rsc 	{ "d",	Fether,	Od,	"destination address" },
204 17b19538 2008-07-24 rsc 	{ "t",	Fether,	Ot,	"transmit address" },
205 17b19538 2008-07-24 rsc 	{ "r",	Fether,	Or,	"receive address" },
206 17b19538 2008-07-24 rsc 	{ "bssid", Fether,	Obssid, "bssid address" },
207 17b19538 2008-07-24 rsc 	{ "a",	Fether,	Oa,	"any address" },
208 17b19538 2008-07-24 rsc 	{ "sd",	Fether,	Oa,	"source|destination address" },
209 17b19538 2008-07-24 rsc 	{ 0 }
210 17b19538 2008-07-24 rsc };
211 17b19538 2008-07-24 rsc 
212 17b19538 2008-07-24 rsc static void
213 17b19538 2008-07-24 rsc p_compile(Filter *f)
214 17b19538 2008-07-24 rsc {
215 17b19538 2008-07-24 rsc 	Mux *m;
216 17b19538 2008-07-24 rsc 
217 17b19538 2008-07-24 rsc 	if(f->op == '='){
218 17b19538 2008-07-24 rsc 		compile_cmp(p80211.name, f, p_fields);
219 17b19538 2008-07-24 rsc 		return;
220 17b19538 2008-07-24 rsc 	}
221 17b19538 2008-07-24 rsc 	if(strcmp(f->s, "mgmt") == 0){
222 17b19538 2008-07-24 rsc 		f->pr = &p80211;
223 17b19538 2008-07-24 rsc 		f->ulv = Tmgmt;
224 17b19538 2008-07-24 rsc 		f->subop = Ot;
225 17b19538 2008-07-24 rsc 		return;
226 17b19538 2008-07-24 rsc 	}
227 17b19538 2008-07-24 rsc 	if(strcmp(f->s, "ctl") == 0){
228 17b19538 2008-07-24 rsc 		f->pr = &p80211;
229 17b19538 2008-07-24 rsc 		f->ulv = Tctl;
230 17b19538 2008-07-24 rsc 		f->subop = Ot;
231 17b19538 2008-07-24 rsc 		return;
232 17b19538 2008-07-24 rsc 	}
233 17b19538 2008-07-24 rsc 	if(strcmp(f->s, "data") == 0){
234 17b19538 2008-07-24 rsc 		f->pr = &p80211;
235 17b19538 2008-07-24 rsc 		f->ulv = Tdata;
236 17b19538 2008-07-24 rsc 		f->subop = Ot;
237 17b19538 2008-07-24 rsc 		return;
238 17b19538 2008-07-24 rsc 	}
239 17b19538 2008-07-24 rsc 	for(m = p_mux; m->name != nil; m++){
240 17b19538 2008-07-24 rsc 		if(strcmp(f->s, m->name) == 0){
241 17b19538 2008-07-24 rsc 			f->pr = m->pr;
242 17b19538 2008-07-24 rsc 			f->ulv = m->val;
243 17b19538 2008-07-24 rsc 			f->subop = Opr;
244 17b19538 2008-07-24 rsc 			return;
245 17b19538 2008-07-24 rsc 		}
246 17b19538 2008-07-24 rsc 	}
247 17b19538 2008-07-24 rsc 	sysfatal("unknown 802.11 field or protocol: %s", f->s);
248 17b19538 2008-07-24 rsc }
249 17b19538 2008-07-24 rsc 
250 17b19538 2008-07-24 rsc static int
251 17b19538 2008-07-24 rsc p_filter(Filter *f, Msg *m)
252 17b19538 2008-07-24 rsc {
253 17b19538 2008-07-24 rsc 	Hdr h;
254 17b19538 2008-07-24 rsc 
255 17b19538 2008-07-24 rsc 	memset(&h, 0, sizeof h);
256 17b19538 2008-07-24 rsc 	if(unpackhdr(m->ps, m->pe, &h) < 0)
257 17b19538 2008-07-24 rsc 		return 0;
258 17b19538 2008-07-24 rsc 	m->ps += h.hdrlen;
259 17b19538 2008-07-24 rsc 
260 17b19538 2008-07-24 rsc 	switch(f->subop){
261 17b19538 2008-07-24 rsc 	case Os:
262 17b19538 2008-07-24 rsc 		return memcmp(h.sa, f->a, 6) == 0;
263 17b19538 2008-07-24 rsc 	case Od:
264 17b19538 2008-07-24 rsc 		return memcmp(h.da, f->a, 6) == 0;
265 17b19538 2008-07-24 rsc 	case Ot:
266 17b19538 2008-07-24 rsc 		return memcmp(h.ta, f->a, 6) == 0;
267 17b19538 2008-07-24 rsc 	case Or:
268 17b19538 2008-07-24 rsc 		return memcmp(h.ra, f->a, 6) == 0;
269 17b19538 2008-07-24 rsc 	case Obssid:
270 17b19538 2008-07-24 rsc 		return memcmp(h.bssid, f->a, 6) == 0;
271 17b19538 2008-07-24 rsc 	case Oa:
272 17b19538 2008-07-24 rsc 		return memcmp(h.sa, f->a, 6) == 0
273 17b19538 2008-07-24 rsc 			|| memcmp(h.da, f->a, 6) == 0
274 17b19538 2008-07-24 rsc 			|| memcmp(h.ta, f->a, 6) == 0
275 17b19538 2008-07-24 rsc 			|| memcmp(h.ra, f->a, 6) == 0
276 17b19538 2008-07-24 rsc 			|| memcmp(h.bssid, f->a, 6) == 0;
277 17b19538 2008-07-24 rsc 	case Opr:
278 17b19538 2008-07-24 rsc 		return h.proto == f->ulv;
279 17b19538 2008-07-24 rsc 	}
280 17b19538 2008-07-24 rsc 	return 0;
281 17b19538 2008-07-24 rsc }
282 17b19538 2008-07-24 rsc 
283 17b19538 2008-07-24 rsc static int
284 17b19538 2008-07-24 rsc p_seprint(Msg *m)
285 17b19538 2008-07-24 rsc {
286 17b19538 2008-07-24 rsc 	Hdr h;
287 fa325e9b 2020-01-10 cross 
288 17b19538 2008-07-24 rsc 	memset(&h, 0, sizeof h);
289 17b19538 2008-07-24 rsc 	if(unpackhdr(m->ps, m->pe, &h) < 0)
290 17b19538 2008-07-24 rsc 		return -1;
291 17b19538 2008-07-24 rsc 
292 17b19538 2008-07-24 rsc 	m->pr = &dump;
293 17b19538 2008-07-24 rsc 	m->p = seprint(m->p, m->e, "fc=%02x flags=%02x ", m->ps[0], m->ps[1]);
294 17b19538 2008-07-24 rsc 	switch(h.type){
295 17b19538 2008-07-24 rsc 	case Tmgmt:
296 17b19538 2008-07-24 rsc 		m->p = seprint(m->p, m->e, "mgmt dur=%d d=%E s=%E bssid=%E seq=%d",
297 17b19538 2008-07-24 rsc 			h.dur, h.da, h.sa, h.bssid, h.seq);
298 17b19538 2008-07-24 rsc 		break;
299 17b19538 2008-07-24 rsc 	case Tctl:
300 17b19538 2008-07-24 rsc 		switch(h.subtype){
301 17b19538 2008-07-24 rsc 		case CtlPoll:
302 17b19538 2008-07-24 rsc 			m->p = seprint(m->p, m->e, "ctl poll aid=%d bssid=%E t=%E",
303 17b19538 2008-07-24 rsc 				h.aid, h.bssid, h.ta);
304 17b19538 2008-07-24 rsc 			break;
305 17b19538 2008-07-24 rsc 		case CtlRts:
306 17b19538 2008-07-24 rsc 			m->p = seprint(m->p, m->e, "ctl rts dur=%d r=%E t=%E",
307 17b19538 2008-07-24 rsc 				h.dur, h.ra, h.ta);
308 17b19538 2008-07-24 rsc 			break;
309 17b19538 2008-07-24 rsc 		case CtlCts:
310 17b19538 2008-07-24 rsc 			m->p = seprint(m->p, m->e, "ctl cts dur=%d r=%E",
311 17b19538 2008-07-24 rsc 				h.dur, h.ra);
312 17b19538 2008-07-24 rsc 			break;
313 17b19538 2008-07-24 rsc 		case CtlAck:
314 17b19538 2008-07-24 rsc 			m->p = seprint(m->p, m->e, "ctl ack dur=%d r=%E",
315 17b19538 2008-07-24 rsc 				h.dur, h.ra);
316 17b19538 2008-07-24 rsc 			break;
317 17b19538 2008-07-24 rsc 		case CtlCfEnd:
318 17b19538 2008-07-24 rsc 			m->p = seprint(m->p, m->e, "ctl cf end dur=%d r=%E bssid=%E",
319 17b19538 2008-07-24 rsc 				h.dur, h.ra, h.bssid);
320 17b19538 2008-07-24 rsc 			break;
321 17b19538 2008-07-24 rsc 		case CtlCfEndAck:
322 17b19538 2008-07-24 rsc 			m->p = seprint(m->p, m->e, "ctl cf end ack dur=%d r=%E bssid=%E",
323 17b19538 2008-07-24 rsc 				h.dur, h.ra, h.bssid);
324 17b19538 2008-07-24 rsc 			break;
325 17b19538 2008-07-24 rsc 		default:
326 17b19538 2008-07-24 rsc 			m->p = seprint(m->p, m->e, "ctl %.*H", m->ps, h.hdrlen);
327 17b19538 2008-07-24 rsc 			break;
328 17b19538 2008-07-24 rsc 		}
329 17b19538 2008-07-24 rsc 		break;
330 17b19538 2008-07-24 rsc 	case Tdata:
331 17b19538 2008-07-24 rsc 		switch(h.flags&(FlagFromds|FlagTods)){
332 17b19538 2008-07-24 rsc 		case 0:
333 17b19538 2008-07-24 rsc 			m->p = seprint(m->p, m->e, "data d=%E s=%E bssid=%E",
334 17b19538 2008-07-24 rsc 				h.da, h.sa, h.bssid);
335 17b19538 2008-07-24 rsc 			break;
336 17b19538 2008-07-24 rsc 		case FlagFromds:
337 17b19538 2008-07-24 rsc 			m->p = seprint(m->p, m->e, "data fds d=%E bssid=%E s=%E",
338 17b19538 2008-07-24 rsc 				h.da, h.bssid, h.sa);
339 17b19538 2008-07-24 rsc 			break;
340 17b19538 2008-07-24 rsc 		case FlagTods:
341 17b19538 2008-07-24 rsc 			m->p = seprint(m->p, m->e, "data tds bssid=%E s=%E d=%E",
342 17b19538 2008-07-24 rsc 				h.bssid, h.sa, h.da);
343 17b19538 2008-07-24 rsc 			break;
344 17b19538 2008-07-24 rsc 		case FlagFromds|FlagTods:
345 17b19538 2008-07-24 rsc 			m->p = seprint(m->p, m->e, "data fds tds r=%E t=%E d=%E s=%E",
346 17b19538 2008-07-24 rsc 				h.ra, h.ta, h.da, h.sa);
347 17b19538 2008-07-24 rsc 			break;
348 17b19538 2008-07-24 rsc 		}
349 17b19538 2008-07-24 rsc 		if(!(h.flags&FlagWep))
350 17b19538 2008-07-24 rsc 			m->pr = &llc;
351 17b19538 2008-07-24 rsc 		break;
352 17b19538 2008-07-24 rsc 	}
353 17b19538 2008-07-24 rsc 	m->ps += h.hdrlen;
354 17b19538 2008-07-24 rsc 	return 0;
355 17b19538 2008-07-24 rsc }
356 17b19538 2008-07-24 rsc 
357 17b19538 2008-07-24 rsc Proto p80211 =
358 17b19538 2008-07-24 rsc {
359 17b19538 2008-07-24 rsc 	"802.11",
360 17b19538 2008-07-24 rsc 	p_compile,
361 17b19538 2008-07-24 rsc 	p_filter,
362 17b19538 2008-07-24 rsc 	p_seprint,
363 17b19538 2008-07-24 rsc 	p_mux,
364 17b19538 2008-07-24 rsc 	nil,
365 17b19538 2008-07-24 rsc 	nil,
366 17b19538 2008-07-24 rsc 	defaultframer
367 17b19538 2008-07-24 rsc };