1/*-
2 * Copyright (c) 2001 Atsushi Onoe
3 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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.
14 *
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.
25 */
26
27#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2001 Atsushi Onoe
3 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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.
14 *
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.
25 */
26
27#include <sys/cdefs.h>
|
28__FBSDID("$FreeBSD: head/sys/net80211/ieee80211.c 219599 2011-03-13 11:47:43Z bschmidt $");
| 28__FBSDID("$FreeBSD: head/sys/net80211/ieee80211.c 228621 2011-12-17 10:23:17Z bschmidt $");
|
29
30/*
31 * IEEE 802.11 generic handler
32 */
33#include "opt_wlan.h"
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38
39#include <sys/socket.h>
40
41#include <net/if.h>
42#include <net/if_dl.h>
43#include <net/if_media.h>
44#include <net/if_types.h>
45#include <net/ethernet.h>
46
47#include <net80211/ieee80211_var.h>
48#include <net80211/ieee80211_regdomain.h>
49#ifdef IEEE80211_SUPPORT_SUPERG
50#include <net80211/ieee80211_superg.h>
51#endif
52#include <net80211/ieee80211_ratectl.h>
53
54#include <net/bpf.h>
55
56const char *ieee80211_phymode_name[IEEE80211_MODE_MAX] = {
57 [IEEE80211_MODE_AUTO] = "auto",
58 [IEEE80211_MODE_11A] = "11a",
59 [IEEE80211_MODE_11B] = "11b",
60 [IEEE80211_MODE_11G] = "11g",
61 [IEEE80211_MODE_FH] = "FH",
62 [IEEE80211_MODE_TURBO_A] = "turboA",
63 [IEEE80211_MODE_TURBO_G] = "turboG",
64 [IEEE80211_MODE_STURBO_A] = "sturboA",
65 [IEEE80211_MODE_HALF] = "half",
66 [IEEE80211_MODE_QUARTER] = "quarter",
67 [IEEE80211_MODE_11NA] = "11na",
68 [IEEE80211_MODE_11NG] = "11ng",
69};
70/* map ieee80211_opmode to the corresponding capability bit */
71const int ieee80211_opcap[IEEE80211_OPMODE_MAX] = {
72 [IEEE80211_M_IBSS] = IEEE80211_C_IBSS,
73 [IEEE80211_M_WDS] = IEEE80211_C_WDS,
74 [IEEE80211_M_STA] = IEEE80211_C_STA,
75 [IEEE80211_M_AHDEMO] = IEEE80211_C_AHDEMO,
76 [IEEE80211_M_HOSTAP] = IEEE80211_C_HOSTAP,
77 [IEEE80211_M_MONITOR] = IEEE80211_C_MONITOR,
78#ifdef IEEE80211_SUPPORT_MESH
79 [IEEE80211_M_MBSS] = IEEE80211_C_MBSS,
80#endif
81};
82
83static const uint8_t ieee80211broadcastaddr[IEEE80211_ADDR_LEN] =
84 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
85
86static void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag);
87static void ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag);
88static void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag);
89static int ieee80211_media_setup(struct ieee80211com *ic,
90 struct ifmedia *media, int caps, int addsta,
91 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat);
92static void ieee80211com_media_status(struct ifnet *, struct ifmediareq *);
93static int ieee80211com_media_change(struct ifnet *);
94static int media_status(enum ieee80211_opmode,
95 const struct ieee80211_channel *);
96
97MALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state");
98
99/*
100 * Default supported rates for 802.11 operation (in IEEE .5Mb units).
101 */
102#define B(r) ((r) | IEEE80211_RATE_BASIC)
103static const struct ieee80211_rateset ieee80211_rateset_11a =
104 { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } };
105static const struct ieee80211_rateset ieee80211_rateset_half =
106 { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } };
107static const struct ieee80211_rateset ieee80211_rateset_quarter =
108 { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } };
109static const struct ieee80211_rateset ieee80211_rateset_11b =
110 { 4, { B(2), B(4), B(11), B(22) } };
111/* NB: OFDM rates are handled specially based on mode */
112static const struct ieee80211_rateset ieee80211_rateset_11g =
113 { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } };
114#undef B
115
116/*
117 * Fill in 802.11 available channel set, mark
118 * all available channels as active, and pick
119 * a default channel if not already specified.
120 */
121static void
122ieee80211_chan_init(struct ieee80211com *ic)
123{
124#define DEFAULTRATES(m, def) do { \
125 if (ic->ic_sup_rates[m].rs_nrates == 0) \
126 ic->ic_sup_rates[m] = def; \
127} while (0)
128 struct ieee80211_channel *c;
129 int i;
130
131 KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX,
132 ("invalid number of channels specified: %u", ic->ic_nchans));
133 memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail));
134 memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps));
135 setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO);
136 for (i = 0; i < ic->ic_nchans; i++) {
137 c = &ic->ic_channels[i];
138 KASSERT(c->ic_flags != 0, ("channel with no flags"));
139 /*
140 * Help drivers that work only with frequencies by filling
141 * in IEEE channel #'s if not already calculated. Note this
142 * mimics similar work done in ieee80211_setregdomain when
143 * changing regulatory state.
144 */
145 if (c->ic_ieee == 0)
146 c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags);
147 if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0)
148 c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq +
149 (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20),
150 c->ic_flags);
151 /* default max tx power to max regulatory */
152 if (c->ic_maxpower == 0)
153 c->ic_maxpower = 2*c->ic_maxregpower;
154 setbit(ic->ic_chan_avail, c->ic_ieee);
155 /*
156 * Identify mode capabilities.
157 */
158 if (IEEE80211_IS_CHAN_A(c))
159 setbit(ic->ic_modecaps, IEEE80211_MODE_11A);
160 if (IEEE80211_IS_CHAN_B(c))
161 setbit(ic->ic_modecaps, IEEE80211_MODE_11B);
162 if (IEEE80211_IS_CHAN_ANYG(c))
163 setbit(ic->ic_modecaps, IEEE80211_MODE_11G);
164 if (IEEE80211_IS_CHAN_FHSS(c))
165 setbit(ic->ic_modecaps, IEEE80211_MODE_FH);
166 if (IEEE80211_IS_CHAN_108A(c))
167 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A);
168 if (IEEE80211_IS_CHAN_108G(c))
169 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G);
170 if (IEEE80211_IS_CHAN_ST(c))
171 setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A);
172 if (IEEE80211_IS_CHAN_HALF(c))
173 setbit(ic->ic_modecaps, IEEE80211_MODE_HALF);
174 if (IEEE80211_IS_CHAN_QUARTER(c))
175 setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER);
176 if (IEEE80211_IS_CHAN_HTA(c))
177 setbit(ic->ic_modecaps, IEEE80211_MODE_11NA);
178 if (IEEE80211_IS_CHAN_HTG(c))
179 setbit(ic->ic_modecaps, IEEE80211_MODE_11NG);
180 }
181 /* initialize candidate channels to all available */
182 memcpy(ic->ic_chan_active, ic->ic_chan_avail,
183 sizeof(ic->ic_chan_avail));
184
185 /* sort channel table to allow lookup optimizations */
186 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
187
188 /* invalidate any previous state */
189 ic->ic_bsschan = IEEE80211_CHAN_ANYC;
190 ic->ic_prevchan = NULL;
191 ic->ic_csa_newchan = NULL;
192 /* arbitrarily pick the first channel */
193 ic->ic_curchan = &ic->ic_channels[0];
194 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
195
196 /* fillin well-known rate sets if driver has not specified */
197 DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b);
198 DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g);
199 DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a);
200 DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a);
201 DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g);
202 DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a);
203 DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half);
204 DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter);
205 DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a);
206 DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g);
207
208 /*
209 * Setup required information to fill the mcsset field, if driver did
210 * not. Assume a 2T2R setup for historic reasons.
211 */
212 if (ic->ic_rxstream == 0)
213 ic->ic_rxstream = 2;
214 if (ic->ic_txstream == 0)
215 ic->ic_txstream = 2;
216
217 /*
218 * Set auto mode to reset active channel state and any desired channel.
219 */
220 (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO);
221#undef DEFAULTRATES
222}
223
224static void
225null_update_mcast(struct ifnet *ifp)
226{
227 if_printf(ifp, "need multicast update callback\n");
228}
229
230static void
231null_update_promisc(struct ifnet *ifp)
232{
233 if_printf(ifp, "need promiscuous mode update callback\n");
234}
235
236static int
237null_transmit(struct ifnet *ifp, struct mbuf *m)
238{
239 m_freem(m);
240 ifp->if_oerrors++;
241 return EACCES; /* XXX EIO/EPERM? */
242}
243
244static int
245null_output(struct ifnet *ifp, struct mbuf *m,
246 struct sockaddr *dst, struct route *ro)
247{
248 if_printf(ifp, "discard raw packet\n");
249 return null_transmit(ifp, m);
250}
251
252static void
253null_input(struct ifnet *ifp, struct mbuf *m)
254{
255 if_printf(ifp, "if_input should not be called\n");
256 m_freem(m);
257}
258
259/*
260 * Attach/setup the common net80211 state. Called by
261 * the driver on attach to prior to creating any vap's.
262 */
263void
264ieee80211_ifattach(struct ieee80211com *ic,
265 const uint8_t macaddr[IEEE80211_ADDR_LEN])
266{
267 struct ifnet *ifp = ic->ic_ifp;
268 struct sockaddr_dl *sdl;
269 struct ifaddr *ifa;
270
271 KASSERT(ifp->if_type == IFT_IEEE80211, ("if_type %d", ifp->if_type));
272
273 IEEE80211_LOCK_INIT(ic, ifp->if_xname);
274 TAILQ_INIT(&ic->ic_vaps);
275
276 /* Create a taskqueue for all state changes */
277 ic->ic_tq = taskqueue_create("ic_taskq", M_WAITOK | M_ZERO,
278 taskqueue_thread_enqueue, &ic->ic_tq);
279 taskqueue_start_threads(&ic->ic_tq, 1, PI_NET, "%s taskq",
280 ifp->if_xname);
281 /*
282 * Fill in 802.11 available channel set, mark all
283 * available channels as active, and pick a default
284 * channel if not already specified.
285 */
286 ieee80211_media_init(ic);
287
288 ic->ic_update_mcast = null_update_mcast;
289 ic->ic_update_promisc = null_update_promisc;
290
291 ic->ic_hash_key = arc4random();
292 ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT;
293 ic->ic_lintval = ic->ic_bintval;
294 ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX;
295
296 ieee80211_crypto_attach(ic);
297 ieee80211_node_attach(ic);
298 ieee80211_power_attach(ic);
299 ieee80211_proto_attach(ic);
300#ifdef IEEE80211_SUPPORT_SUPERG
301 ieee80211_superg_attach(ic);
302#endif
303 ieee80211_ht_attach(ic);
304 ieee80211_scan_attach(ic);
305 ieee80211_regdomain_attach(ic);
306 ieee80211_dfs_attach(ic);
307
308 ieee80211_sysctl_attach(ic);
309
310 ifp->if_addrlen = IEEE80211_ADDR_LEN;
311 ifp->if_hdrlen = 0;
312 if_attach(ifp);
313 ifp->if_mtu = IEEE80211_MTU_MAX;
314 ifp->if_broadcastaddr = ieee80211broadcastaddr;
315 ifp->if_output = null_output;
316 ifp->if_input = null_input; /* just in case */
317 ifp->if_resolvemulti = NULL; /* NB: callers check */
318
319 ifa = ifaddr_byindex(ifp->if_index);
320 KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__));
321 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
322 sdl->sdl_type = IFT_ETHER; /* XXX IFT_IEEE80211? */
323 sdl->sdl_alen = IEEE80211_ADDR_LEN;
324 IEEE80211_ADDR_COPY(LLADDR(sdl), macaddr);
325 ifa_free(ifa);
326}
327
328/*
329 * Detach net80211 state on device detach. Tear down
330 * all vap's and reclaim all common state prior to the
331 * device state going away. Note we may call back into
332 * driver; it must be prepared for this.
333 */
334void
335ieee80211_ifdetach(struct ieee80211com *ic)
336{
337 struct ifnet *ifp = ic->ic_ifp;
338 struct ieee80211vap *vap;
339
340 if_detach(ifp);
341
342 while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL)
343 ieee80211_vap_destroy(vap);
344 ieee80211_waitfor_parent(ic);
345
346 ieee80211_sysctl_detach(ic);
347 ieee80211_dfs_detach(ic);
348 ieee80211_regdomain_detach(ic);
349 ieee80211_scan_detach(ic);
350#ifdef IEEE80211_SUPPORT_SUPERG
351 ieee80211_superg_detach(ic);
352#endif
353 ieee80211_ht_detach(ic);
354 /* NB: must be called before ieee80211_node_detach */
355 ieee80211_proto_detach(ic);
356 ieee80211_crypto_detach(ic);
357 ieee80211_power_detach(ic);
358 ieee80211_node_detach(ic);
359
360 ifmedia_removeall(&ic->ic_media);
361 taskqueue_free(ic->ic_tq);
362 IEEE80211_LOCK_DESTROY(ic);
363}
364
365/*
366 * Default reset method for use with the ioctl support. This
367 * method is invoked after any state change in the 802.11
368 * layer that should be propagated to the hardware but not
369 * require re-initialization of the 802.11 state machine (e.g
370 * rescanning for an ap). We always return ENETRESET which
371 * should cause the driver to re-initialize the device. Drivers
372 * can override this method to implement more optimized support.
373 */
374static int
375default_reset(struct ieee80211vap *vap, u_long cmd)
376{
377 return ENETRESET;
378}
379
380/*
381 * Prepare a vap for use. Drivers use this call to
382 * setup net80211 state in new vap's prior attaching
383 * them with ieee80211_vap_attach (below).
384 */
385int
386ieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap,
| 29
30/*
31 * IEEE 802.11 generic handler
32 */
33#include "opt_wlan.h"
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38
39#include <sys/socket.h>
40
41#include <net/if.h>
42#include <net/if_dl.h>
43#include <net/if_media.h>
44#include <net/if_types.h>
45#include <net/ethernet.h>
46
47#include <net80211/ieee80211_var.h>
48#include <net80211/ieee80211_regdomain.h>
49#ifdef IEEE80211_SUPPORT_SUPERG
50#include <net80211/ieee80211_superg.h>
51#endif
52#include <net80211/ieee80211_ratectl.h>
53
54#include <net/bpf.h>
55
56const char *ieee80211_phymode_name[IEEE80211_MODE_MAX] = {
57 [IEEE80211_MODE_AUTO] = "auto",
58 [IEEE80211_MODE_11A] = "11a",
59 [IEEE80211_MODE_11B] = "11b",
60 [IEEE80211_MODE_11G] = "11g",
61 [IEEE80211_MODE_FH] = "FH",
62 [IEEE80211_MODE_TURBO_A] = "turboA",
63 [IEEE80211_MODE_TURBO_G] = "turboG",
64 [IEEE80211_MODE_STURBO_A] = "sturboA",
65 [IEEE80211_MODE_HALF] = "half",
66 [IEEE80211_MODE_QUARTER] = "quarter",
67 [IEEE80211_MODE_11NA] = "11na",
68 [IEEE80211_MODE_11NG] = "11ng",
69};
70/* map ieee80211_opmode to the corresponding capability bit */
71const int ieee80211_opcap[IEEE80211_OPMODE_MAX] = {
72 [IEEE80211_M_IBSS] = IEEE80211_C_IBSS,
73 [IEEE80211_M_WDS] = IEEE80211_C_WDS,
74 [IEEE80211_M_STA] = IEEE80211_C_STA,
75 [IEEE80211_M_AHDEMO] = IEEE80211_C_AHDEMO,
76 [IEEE80211_M_HOSTAP] = IEEE80211_C_HOSTAP,
77 [IEEE80211_M_MONITOR] = IEEE80211_C_MONITOR,
78#ifdef IEEE80211_SUPPORT_MESH
79 [IEEE80211_M_MBSS] = IEEE80211_C_MBSS,
80#endif
81};
82
83static const uint8_t ieee80211broadcastaddr[IEEE80211_ADDR_LEN] =
84 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
85
86static void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag);
87static void ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag);
88static void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag);
89static int ieee80211_media_setup(struct ieee80211com *ic,
90 struct ifmedia *media, int caps, int addsta,
91 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat);
92static void ieee80211com_media_status(struct ifnet *, struct ifmediareq *);
93static int ieee80211com_media_change(struct ifnet *);
94static int media_status(enum ieee80211_opmode,
95 const struct ieee80211_channel *);
96
97MALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state");
98
99/*
100 * Default supported rates for 802.11 operation (in IEEE .5Mb units).
101 */
102#define B(r) ((r) | IEEE80211_RATE_BASIC)
103static const struct ieee80211_rateset ieee80211_rateset_11a =
104 { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } };
105static const struct ieee80211_rateset ieee80211_rateset_half =
106 { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } };
107static const struct ieee80211_rateset ieee80211_rateset_quarter =
108 { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } };
109static const struct ieee80211_rateset ieee80211_rateset_11b =
110 { 4, { B(2), B(4), B(11), B(22) } };
111/* NB: OFDM rates are handled specially based on mode */
112static const struct ieee80211_rateset ieee80211_rateset_11g =
113 { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } };
114#undef B
115
116/*
117 * Fill in 802.11 available channel set, mark
118 * all available channels as active, and pick
119 * a default channel if not already specified.
120 */
121static void
122ieee80211_chan_init(struct ieee80211com *ic)
123{
124#define DEFAULTRATES(m, def) do { \
125 if (ic->ic_sup_rates[m].rs_nrates == 0) \
126 ic->ic_sup_rates[m] = def; \
127} while (0)
128 struct ieee80211_channel *c;
129 int i;
130
131 KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX,
132 ("invalid number of channels specified: %u", ic->ic_nchans));
133 memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail));
134 memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps));
135 setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO);
136 for (i = 0; i < ic->ic_nchans; i++) {
137 c = &ic->ic_channels[i];
138 KASSERT(c->ic_flags != 0, ("channel with no flags"));
139 /*
140 * Help drivers that work only with frequencies by filling
141 * in IEEE channel #'s if not already calculated. Note this
142 * mimics similar work done in ieee80211_setregdomain when
143 * changing regulatory state.
144 */
145 if (c->ic_ieee == 0)
146 c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags);
147 if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0)
148 c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq +
149 (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20),
150 c->ic_flags);
151 /* default max tx power to max regulatory */
152 if (c->ic_maxpower == 0)
153 c->ic_maxpower = 2*c->ic_maxregpower;
154 setbit(ic->ic_chan_avail, c->ic_ieee);
155 /*
156 * Identify mode capabilities.
157 */
158 if (IEEE80211_IS_CHAN_A(c))
159 setbit(ic->ic_modecaps, IEEE80211_MODE_11A);
160 if (IEEE80211_IS_CHAN_B(c))
161 setbit(ic->ic_modecaps, IEEE80211_MODE_11B);
162 if (IEEE80211_IS_CHAN_ANYG(c))
163 setbit(ic->ic_modecaps, IEEE80211_MODE_11G);
164 if (IEEE80211_IS_CHAN_FHSS(c))
165 setbit(ic->ic_modecaps, IEEE80211_MODE_FH);
166 if (IEEE80211_IS_CHAN_108A(c))
167 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A);
168 if (IEEE80211_IS_CHAN_108G(c))
169 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G);
170 if (IEEE80211_IS_CHAN_ST(c))
171 setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A);
172 if (IEEE80211_IS_CHAN_HALF(c))
173 setbit(ic->ic_modecaps, IEEE80211_MODE_HALF);
174 if (IEEE80211_IS_CHAN_QUARTER(c))
175 setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER);
176 if (IEEE80211_IS_CHAN_HTA(c))
177 setbit(ic->ic_modecaps, IEEE80211_MODE_11NA);
178 if (IEEE80211_IS_CHAN_HTG(c))
179 setbit(ic->ic_modecaps, IEEE80211_MODE_11NG);
180 }
181 /* initialize candidate channels to all available */
182 memcpy(ic->ic_chan_active, ic->ic_chan_avail,
183 sizeof(ic->ic_chan_avail));
184
185 /* sort channel table to allow lookup optimizations */
186 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
187
188 /* invalidate any previous state */
189 ic->ic_bsschan = IEEE80211_CHAN_ANYC;
190 ic->ic_prevchan = NULL;
191 ic->ic_csa_newchan = NULL;
192 /* arbitrarily pick the first channel */
193 ic->ic_curchan = &ic->ic_channels[0];
194 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
195
196 /* fillin well-known rate sets if driver has not specified */
197 DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b);
198 DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g);
199 DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a);
200 DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a);
201 DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g);
202 DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a);
203 DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half);
204 DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter);
205 DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a);
206 DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g);
207
208 /*
209 * Setup required information to fill the mcsset field, if driver did
210 * not. Assume a 2T2R setup for historic reasons.
211 */
212 if (ic->ic_rxstream == 0)
213 ic->ic_rxstream = 2;
214 if (ic->ic_txstream == 0)
215 ic->ic_txstream = 2;
216
217 /*
218 * Set auto mode to reset active channel state and any desired channel.
219 */
220 (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO);
221#undef DEFAULTRATES
222}
223
224static void
225null_update_mcast(struct ifnet *ifp)
226{
227 if_printf(ifp, "need multicast update callback\n");
228}
229
230static void
231null_update_promisc(struct ifnet *ifp)
232{
233 if_printf(ifp, "need promiscuous mode update callback\n");
234}
235
236static int
237null_transmit(struct ifnet *ifp, struct mbuf *m)
238{
239 m_freem(m);
240 ifp->if_oerrors++;
241 return EACCES; /* XXX EIO/EPERM? */
242}
243
244static int
245null_output(struct ifnet *ifp, struct mbuf *m,
246 struct sockaddr *dst, struct route *ro)
247{
248 if_printf(ifp, "discard raw packet\n");
249 return null_transmit(ifp, m);
250}
251
252static void
253null_input(struct ifnet *ifp, struct mbuf *m)
254{
255 if_printf(ifp, "if_input should not be called\n");
256 m_freem(m);
257}
258
259/*
260 * Attach/setup the common net80211 state. Called by
261 * the driver on attach to prior to creating any vap's.
262 */
263void
264ieee80211_ifattach(struct ieee80211com *ic,
265 const uint8_t macaddr[IEEE80211_ADDR_LEN])
266{
267 struct ifnet *ifp = ic->ic_ifp;
268 struct sockaddr_dl *sdl;
269 struct ifaddr *ifa;
270
271 KASSERT(ifp->if_type == IFT_IEEE80211, ("if_type %d", ifp->if_type));
272
273 IEEE80211_LOCK_INIT(ic, ifp->if_xname);
274 TAILQ_INIT(&ic->ic_vaps);
275
276 /* Create a taskqueue for all state changes */
277 ic->ic_tq = taskqueue_create("ic_taskq", M_WAITOK | M_ZERO,
278 taskqueue_thread_enqueue, &ic->ic_tq);
279 taskqueue_start_threads(&ic->ic_tq, 1, PI_NET, "%s taskq",
280 ifp->if_xname);
281 /*
282 * Fill in 802.11 available channel set, mark all
283 * available channels as active, and pick a default
284 * channel if not already specified.
285 */
286 ieee80211_media_init(ic);
287
288 ic->ic_update_mcast = null_update_mcast;
289 ic->ic_update_promisc = null_update_promisc;
290
291 ic->ic_hash_key = arc4random();
292 ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT;
293 ic->ic_lintval = ic->ic_bintval;
294 ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX;
295
296 ieee80211_crypto_attach(ic);
297 ieee80211_node_attach(ic);
298 ieee80211_power_attach(ic);
299 ieee80211_proto_attach(ic);
300#ifdef IEEE80211_SUPPORT_SUPERG
301 ieee80211_superg_attach(ic);
302#endif
303 ieee80211_ht_attach(ic);
304 ieee80211_scan_attach(ic);
305 ieee80211_regdomain_attach(ic);
306 ieee80211_dfs_attach(ic);
307
308 ieee80211_sysctl_attach(ic);
309
310 ifp->if_addrlen = IEEE80211_ADDR_LEN;
311 ifp->if_hdrlen = 0;
312 if_attach(ifp);
313 ifp->if_mtu = IEEE80211_MTU_MAX;
314 ifp->if_broadcastaddr = ieee80211broadcastaddr;
315 ifp->if_output = null_output;
316 ifp->if_input = null_input; /* just in case */
317 ifp->if_resolvemulti = NULL; /* NB: callers check */
318
319 ifa = ifaddr_byindex(ifp->if_index);
320 KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__));
321 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
322 sdl->sdl_type = IFT_ETHER; /* XXX IFT_IEEE80211? */
323 sdl->sdl_alen = IEEE80211_ADDR_LEN;
324 IEEE80211_ADDR_COPY(LLADDR(sdl), macaddr);
325 ifa_free(ifa);
326}
327
328/*
329 * Detach net80211 state on device detach. Tear down
330 * all vap's and reclaim all common state prior to the
331 * device state going away. Note we may call back into
332 * driver; it must be prepared for this.
333 */
334void
335ieee80211_ifdetach(struct ieee80211com *ic)
336{
337 struct ifnet *ifp = ic->ic_ifp;
338 struct ieee80211vap *vap;
339
340 if_detach(ifp);
341
342 while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL)
343 ieee80211_vap_destroy(vap);
344 ieee80211_waitfor_parent(ic);
345
346 ieee80211_sysctl_detach(ic);
347 ieee80211_dfs_detach(ic);
348 ieee80211_regdomain_detach(ic);
349 ieee80211_scan_detach(ic);
350#ifdef IEEE80211_SUPPORT_SUPERG
351 ieee80211_superg_detach(ic);
352#endif
353 ieee80211_ht_detach(ic);
354 /* NB: must be called before ieee80211_node_detach */
355 ieee80211_proto_detach(ic);
356 ieee80211_crypto_detach(ic);
357 ieee80211_power_detach(ic);
358 ieee80211_node_detach(ic);
359
360 ifmedia_removeall(&ic->ic_media);
361 taskqueue_free(ic->ic_tq);
362 IEEE80211_LOCK_DESTROY(ic);
363}
364
365/*
366 * Default reset method for use with the ioctl support. This
367 * method is invoked after any state change in the 802.11
368 * layer that should be propagated to the hardware but not
369 * require re-initialization of the 802.11 state machine (e.g
370 * rescanning for an ap). We always return ENETRESET which
371 * should cause the driver to re-initialize the device. Drivers
372 * can override this method to implement more optimized support.
373 */
374static int
375default_reset(struct ieee80211vap *vap, u_long cmd)
376{
377 return ENETRESET;
378}
379
380/*
381 * Prepare a vap for use. Drivers use this call to
382 * setup net80211 state in new vap's prior attaching
383 * them with ieee80211_vap_attach (below).
384 */
385int
386ieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap,
|
387 const char name[IFNAMSIZ], int unit, int opmode, int flags,
388 const uint8_t bssid[IEEE80211_ADDR_LEN],
389 const uint8_t macaddr[IEEE80211_ADDR_LEN])
| 387 const char name[IFNAMSIZ], int unit, enum ieee80211_opmode opmode,
388 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN],
389 const uint8_t macaddr[IEEE80211_ADDR_LEN])
|
390{
391 struct ifnet *ifp;
392
393 ifp = if_alloc(IFT_ETHER);
394 if (ifp == NULL) {
395 if_printf(ic->ic_ifp, "%s: unable to allocate ifnet\n",
396 __func__);
397 return ENOMEM;
398 }
399 if_initname(ifp, name, unit);
400 ifp->if_softc = vap; /* back pointer */
401 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
402 ifp->if_start = ieee80211_start;
403 ifp->if_ioctl = ieee80211_ioctl;
404 ifp->if_init = ieee80211_init;
405 /* NB: input+output filled in by ether_ifattach */
406 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
407 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
408 IFQ_SET_READY(&ifp->if_snd);
409
410 vap->iv_ifp = ifp;
411 vap->iv_ic = ic;
412 vap->iv_flags = ic->ic_flags; /* propagate common flags */
413 vap->iv_flags_ext = ic->ic_flags_ext;
414 vap->iv_flags_ven = ic->ic_flags_ven;
415 vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE;
416 vap->iv_htcaps = ic->ic_htcaps;
417 vap->iv_htextcaps = ic->ic_htextcaps;
418 vap->iv_opmode = opmode;
419 vap->iv_caps |= ieee80211_opcap[opmode];
420 switch (opmode) {
421 case IEEE80211_M_WDS:
422 /*
423 * WDS links must specify the bssid of the far end.
424 * For legacy operation this is a static relationship.
425 * For non-legacy operation the station must associate
426 * and be authorized to pass traffic. Plumbing the
427 * vap to the proper node happens when the vap
428 * transitions to RUN state.
429 */
430 IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid);
431 vap->iv_flags |= IEEE80211_F_DESBSSID;
432 if (flags & IEEE80211_CLONE_WDSLEGACY)
433 vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY;
434 break;
435#ifdef IEEE80211_SUPPORT_TDMA
436 case IEEE80211_M_AHDEMO:
437 if (flags & IEEE80211_CLONE_TDMA) {
438 /* NB: checked before clone operation allowed */
439 KASSERT(ic->ic_caps & IEEE80211_C_TDMA,
440 ("not TDMA capable, ic_caps 0x%x", ic->ic_caps));
441 /*
442 * Propagate TDMA capability to mark vap; this
443 * cannot be removed and is used to distinguish
444 * regular ahdemo operation from ahdemo+tdma.
445 */
446 vap->iv_caps |= IEEE80211_C_TDMA;
447 }
448 break;
449#endif
| 390{
391 struct ifnet *ifp;
392
393 ifp = if_alloc(IFT_ETHER);
394 if (ifp == NULL) {
395 if_printf(ic->ic_ifp, "%s: unable to allocate ifnet\n",
396 __func__);
397 return ENOMEM;
398 }
399 if_initname(ifp, name, unit);
400 ifp->if_softc = vap; /* back pointer */
401 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
402 ifp->if_start = ieee80211_start;
403 ifp->if_ioctl = ieee80211_ioctl;
404 ifp->if_init = ieee80211_init;
405 /* NB: input+output filled in by ether_ifattach */
406 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
407 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
408 IFQ_SET_READY(&ifp->if_snd);
409
410 vap->iv_ifp = ifp;
411 vap->iv_ic = ic;
412 vap->iv_flags = ic->ic_flags; /* propagate common flags */
413 vap->iv_flags_ext = ic->ic_flags_ext;
414 vap->iv_flags_ven = ic->ic_flags_ven;
415 vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE;
416 vap->iv_htcaps = ic->ic_htcaps;
417 vap->iv_htextcaps = ic->ic_htextcaps;
418 vap->iv_opmode = opmode;
419 vap->iv_caps |= ieee80211_opcap[opmode];
420 switch (opmode) {
421 case IEEE80211_M_WDS:
422 /*
423 * WDS links must specify the bssid of the far end.
424 * For legacy operation this is a static relationship.
425 * For non-legacy operation the station must associate
426 * and be authorized to pass traffic. Plumbing the
427 * vap to the proper node happens when the vap
428 * transitions to RUN state.
429 */
430 IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid);
431 vap->iv_flags |= IEEE80211_F_DESBSSID;
432 if (flags & IEEE80211_CLONE_WDSLEGACY)
433 vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY;
434 break;
435#ifdef IEEE80211_SUPPORT_TDMA
436 case IEEE80211_M_AHDEMO:
437 if (flags & IEEE80211_CLONE_TDMA) {
438 /* NB: checked before clone operation allowed */
439 KASSERT(ic->ic_caps & IEEE80211_C_TDMA,
440 ("not TDMA capable, ic_caps 0x%x", ic->ic_caps));
441 /*
442 * Propagate TDMA capability to mark vap; this
443 * cannot be removed and is used to distinguish
444 * regular ahdemo operation from ahdemo+tdma.
445 */
446 vap->iv_caps |= IEEE80211_C_TDMA;
447 }
448 break;
449#endif
|
| 450 default:
451 break;
|
450 }
451 /* auto-enable s/w beacon miss support */
452 if (flags & IEEE80211_CLONE_NOBEACONS)
453 vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS;
454 /* auto-generated or user supplied MAC address */
455 if (flags & (IEEE80211_CLONE_BSSID|IEEE80211_CLONE_MACADDR))
456 vap->iv_flags_ext |= IEEE80211_FEXT_UNIQMAC;
457 /*
458 * Enable various functionality by default if we're
459 * capable; the driver can override us if it knows better.
460 */
461 if (vap->iv_caps & IEEE80211_C_WME)
462 vap->iv_flags |= IEEE80211_F_WME;
463 if (vap->iv_caps & IEEE80211_C_BURST)
464 vap->iv_flags |= IEEE80211_F_BURST;
465 /* NB: bg scanning only makes sense for station mode right now */
466 if (vap->iv_opmode == IEEE80211_M_STA &&
467 (vap->iv_caps & IEEE80211_C_BGSCAN))
468 vap->iv_flags |= IEEE80211_F_BGSCAN;
469 vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */
470 /* NB: DFS support only makes sense for ap mode right now */
471 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
472 (vap->iv_caps & IEEE80211_C_DFS))
473 vap->iv_flags_ext |= IEEE80211_FEXT_DFS;
474
475 vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */
476 vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT;
477 vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT;
478 /*
479 * Install a default reset method for the ioctl support;
480 * the driver can override this.
481 */
482 vap->iv_reset = default_reset;
483
484 IEEE80211_ADDR_COPY(vap->iv_myaddr, macaddr);
485
486 ieee80211_sysctl_vattach(vap);
487 ieee80211_crypto_vattach(vap);
488 ieee80211_node_vattach(vap);
489 ieee80211_power_vattach(vap);
490 ieee80211_proto_vattach(vap);
491#ifdef IEEE80211_SUPPORT_SUPERG
492 ieee80211_superg_vattach(vap);
493#endif
494 ieee80211_ht_vattach(vap);
495 ieee80211_scan_vattach(vap);
496 ieee80211_regdomain_vattach(vap);
497 ieee80211_radiotap_vattach(vap);
498 ieee80211_ratectl_set(vap, IEEE80211_RATECTL_NONE);
499
500 return 0;
501}
502
503/*
504 * Activate a vap. State should have been prepared with a
505 * call to ieee80211_vap_setup and by the driver. On return
506 * from this call the vap is ready for use.
507 */
508int
509ieee80211_vap_attach(struct ieee80211vap *vap,
510 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
511{
512 struct ifnet *ifp = vap->iv_ifp;
513 struct ieee80211com *ic = vap->iv_ic;
514 struct ifmediareq imr;
515 int maxrate;
516
517 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
518 "%s: %s parent %s flags 0x%x flags_ext 0x%x\n",
519 __func__, ieee80211_opmode_name[vap->iv_opmode],
520 ic->ic_ifp->if_xname, vap->iv_flags, vap->iv_flags_ext);
521
522 /*
523 * Do late attach work that cannot happen until after
524 * the driver has had a chance to override defaults.
525 */
526 ieee80211_node_latevattach(vap);
527 ieee80211_power_latevattach(vap);
528
529 maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps,
530 vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat);
531 ieee80211_media_status(ifp, &imr);
532 /* NB: strip explicit mode; we're actually in autoselect */
533 ifmedia_set(&vap->iv_media,
534 imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO));
535 if (maxrate)
536 ifp->if_baudrate = IF_Mbps(maxrate);
537
538 ether_ifattach(ifp, vap->iv_myaddr);
539 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
540 /* NB: disallow transmit */
541 ifp->if_transmit = null_transmit;
542 ifp->if_output = null_output;
543 } else {
544 /* hook output method setup by ether_ifattach */
545 vap->iv_output = ifp->if_output;
546 ifp->if_output = ieee80211_output;
547 }
548 /* NB: if_mtu set by ether_ifattach to ETHERMTU */
549
550 IEEE80211_LOCK(ic);
551 TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next);
552 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
553#ifdef IEEE80211_SUPPORT_SUPERG
554 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
555#endif
556 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
557 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
558 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT);
559 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40);
560 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
561 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
562 IEEE80211_UNLOCK(ic);
563
564 return 1;
565}
566
567/*
568 * Tear down vap state and reclaim the ifnet.
569 * The driver is assumed to have prepared for
570 * this; e.g. by turning off interrupts for the
571 * underlying device.
572 */
573void
574ieee80211_vap_detach(struct ieee80211vap *vap)
575{
576 struct ieee80211com *ic = vap->iv_ic;
577 struct ifnet *ifp = vap->iv_ifp;
578
579 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n",
580 __func__, ieee80211_opmode_name[vap->iv_opmode],
581 ic->ic_ifp->if_xname);
582
583 /* NB: bpfdetach is called by ether_ifdetach and claims all taps */
584 ether_ifdetach(ifp);
585
586 ieee80211_stop(vap);
587
588 /*
589 * Flush any deferred vap tasks.
590 */
591 ieee80211_draintask(ic, &vap->iv_nstate_task);
592 ieee80211_draintask(ic, &vap->iv_swbmiss_task);
593
594 /* XXX band-aid until ifnet handles this for us */
595 taskqueue_drain(taskqueue_swi, &ifp->if_linktask);
596
597 IEEE80211_LOCK(ic);
598 KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running"));
599 TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next);
600 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
601#ifdef IEEE80211_SUPPORT_SUPERG
602 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
603#endif
604 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
605 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
606 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT);
607 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40);
608 /* NB: this handles the bpfdetach done below */
609 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF);
610 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
611 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
612 IEEE80211_UNLOCK(ic);
613
614 ifmedia_removeall(&vap->iv_media);
615
616 ieee80211_radiotap_vdetach(vap);
617 ieee80211_regdomain_vdetach(vap);
618 ieee80211_scan_vdetach(vap);
619#ifdef IEEE80211_SUPPORT_SUPERG
620 ieee80211_superg_vdetach(vap);
621#endif
622 ieee80211_ht_vdetach(vap);
623 /* NB: must be before ieee80211_node_vdetach */
624 ieee80211_proto_vdetach(vap);
625 ieee80211_crypto_vdetach(vap);
626 ieee80211_power_vdetach(vap);
627 ieee80211_node_vdetach(vap);
628 ieee80211_sysctl_vdetach(vap);
629
630 if_free(ifp);
631}
632
633/*
634 * Synchronize flag bit state in the parent ifnet structure
635 * according to the state of all vap ifnet's. This is used,
636 * for example, to handle IFF_PROMISC and IFF_ALLMULTI.
637 */
638void
639ieee80211_syncifflag_locked(struct ieee80211com *ic, int flag)
640{
641 struct ifnet *ifp = ic->ic_ifp;
642 struct ieee80211vap *vap;
643 int bit, oflags;
644
645 IEEE80211_LOCK_ASSERT(ic);
646
647 bit = 0;
648 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
649 if (vap->iv_ifp->if_flags & flag) {
650 /*
651 * XXX the bridge sets PROMISC but we don't want to
652 * enable it on the device, discard here so all the
653 * drivers don't need to special-case it
654 */
655 if (flag == IFF_PROMISC &&
656 !(vap->iv_opmode == IEEE80211_M_MONITOR ||
657 (vap->iv_opmode == IEEE80211_M_AHDEMO &&
658 (vap->iv_caps & IEEE80211_C_TDMA) == 0)))
659 continue;
660 bit = 1;
661 break;
662 }
663 oflags = ifp->if_flags;
664 if (bit)
665 ifp->if_flags |= flag;
666 else
667 ifp->if_flags &= ~flag;
668 if ((ifp->if_flags ^ oflags) & flag) {
669 /* XXX should we return 1/0 and let caller do this? */
670 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
671 if (flag == IFF_PROMISC)
672 ieee80211_runtask(ic, &ic->ic_promisc_task);
673 else if (flag == IFF_ALLMULTI)
674 ieee80211_runtask(ic, &ic->ic_mcast_task);
675 }
676 }
677}
678
679/*
680 * Synchronize flag bit state in the com structure
681 * according to the state of all vap's. This is used,
682 * for example, to handle state changes via ioctls.
683 */
684static void
685ieee80211_syncflag_locked(struct ieee80211com *ic, int flag)
686{
687 struct ieee80211vap *vap;
688 int bit;
689
690 IEEE80211_LOCK_ASSERT(ic);
691
692 bit = 0;
693 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
694 if (vap->iv_flags & flag) {
695 bit = 1;
696 break;
697 }
698 if (bit)
699 ic->ic_flags |= flag;
700 else
701 ic->ic_flags &= ~flag;
702}
703
704void
705ieee80211_syncflag(struct ieee80211vap *vap, int flag)
706{
707 struct ieee80211com *ic = vap->iv_ic;
708
709 IEEE80211_LOCK(ic);
710 if (flag < 0) {
711 flag = -flag;
712 vap->iv_flags &= ~flag;
713 } else
714 vap->iv_flags |= flag;
715 ieee80211_syncflag_locked(ic, flag);
716 IEEE80211_UNLOCK(ic);
717}
718
719/*
720 * Synchronize flags_ht bit state in the com structure
721 * according to the state of all vap's. This is used,
722 * for example, to handle state changes via ioctls.
723 */
724static void
725ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag)
726{
727 struct ieee80211vap *vap;
728 int bit;
729
730 IEEE80211_LOCK_ASSERT(ic);
731
732 bit = 0;
733 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
734 if (vap->iv_flags_ht & flag) {
735 bit = 1;
736 break;
737 }
738 if (bit)
739 ic->ic_flags_ht |= flag;
740 else
741 ic->ic_flags_ht &= ~flag;
742}
743
744void
745ieee80211_syncflag_ht(struct ieee80211vap *vap, int flag)
746{
747 struct ieee80211com *ic = vap->iv_ic;
748
749 IEEE80211_LOCK(ic);
750 if (flag < 0) {
751 flag = -flag;
752 vap->iv_flags_ht &= ~flag;
753 } else
754 vap->iv_flags_ht |= flag;
755 ieee80211_syncflag_ht_locked(ic, flag);
756 IEEE80211_UNLOCK(ic);
757}
758
759/*
760 * Synchronize flags_ext bit state in the com structure
761 * according to the state of all vap's. This is used,
762 * for example, to handle state changes via ioctls.
763 */
764static void
765ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag)
766{
767 struct ieee80211vap *vap;
768 int bit;
769
770 IEEE80211_LOCK_ASSERT(ic);
771
772 bit = 0;
773 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
774 if (vap->iv_flags_ext & flag) {
775 bit = 1;
776 break;
777 }
778 if (bit)
779 ic->ic_flags_ext |= flag;
780 else
781 ic->ic_flags_ext &= ~flag;
782}
783
784void
785ieee80211_syncflag_ext(struct ieee80211vap *vap, int flag)
786{
787 struct ieee80211com *ic = vap->iv_ic;
788
789 IEEE80211_LOCK(ic);
790 if (flag < 0) {
791 flag = -flag;
792 vap->iv_flags_ext &= ~flag;
793 } else
794 vap->iv_flags_ext |= flag;
795 ieee80211_syncflag_ext_locked(ic, flag);
796 IEEE80211_UNLOCK(ic);
797}
798
799static __inline int
800mapgsm(u_int freq, u_int flags)
801{
802 freq *= 10;
803 if (flags & IEEE80211_CHAN_QUARTER)
804 freq += 5;
805 else if (flags & IEEE80211_CHAN_HALF)
806 freq += 10;
807 else
808 freq += 20;
809 /* NB: there is no 907/20 wide but leave room */
810 return (freq - 906*10) / 5;
811}
812
813static __inline int
814mappsb(u_int freq, u_int flags)
815{
816 return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5;
817}
818
819/*
820 * Convert MHz frequency to IEEE channel number.
821 */
822int
823ieee80211_mhz2ieee(u_int freq, u_int flags)
824{
825#define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990)
826 if (flags & IEEE80211_CHAN_GSM)
827 return mapgsm(freq, flags);
828 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
829 if (freq == 2484)
830 return 14;
831 if (freq < 2484)
832 return ((int) freq - 2407) / 5;
833 else
834 return 15 + ((freq - 2512) / 20);
835 } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */
836 if (freq <= 5000) {
837 /* XXX check regdomain? */
838 if (IS_FREQ_IN_PSB(freq))
839 return mappsb(freq, flags);
840 return (freq - 4000) / 5;
841 } else
842 return (freq - 5000) / 5;
843 } else { /* either, guess */
844 if (freq == 2484)
845 return 14;
846 if (freq < 2484) {
847 if (907 <= freq && freq <= 922)
848 return mapgsm(freq, flags);
849 return ((int) freq - 2407) / 5;
850 }
851 if (freq < 5000) {
852 if (IS_FREQ_IN_PSB(freq))
853 return mappsb(freq, flags);
854 else if (freq > 4900)
855 return (freq - 4000) / 5;
856 else
857 return 15 + ((freq - 2512) / 20);
858 }
859 return (freq - 5000) / 5;
860 }
861#undef IS_FREQ_IN_PSB
862}
863
864/*
865 * Convert channel to IEEE channel number.
866 */
867int
868ieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c)
869{
870 if (c == NULL) {
871 if_printf(ic->ic_ifp, "invalid channel (NULL)\n");
872 return 0; /* XXX */
873 }
874 return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee);
875}
876
877/*
878 * Convert IEEE channel number to MHz frequency.
879 */
880u_int
881ieee80211_ieee2mhz(u_int chan, u_int flags)
882{
883 if (flags & IEEE80211_CHAN_GSM)
884 return 907 + 5 * (chan / 10);
885 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
886 if (chan == 14)
887 return 2484;
888 if (chan < 14)
889 return 2407 + chan*5;
890 else
891 return 2512 + ((chan-15)*20);
892 } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */
893 if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) {
894 chan -= 37;
895 return 4940 + chan*5 + (chan % 5 ? 2 : 0);
896 }
897 return 5000 + (chan*5);
898 } else { /* either, guess */
899 /* XXX can't distinguish PSB+GSM channels */
900 if (chan == 14)
901 return 2484;
902 if (chan < 14) /* 0-13 */
903 return 2407 + chan*5;
904 if (chan < 27) /* 15-26 */
905 return 2512 + ((chan-15)*20);
906 return 5000 + (chan*5);
907 }
908}
909
910/*
911 * Locate a channel given a frequency+flags. We cache
912 * the previous lookup to optimize switching between two
913 * channels--as happens with dynamic turbo.
914 */
915struct ieee80211_channel *
916ieee80211_find_channel(struct ieee80211com *ic, int freq, int flags)
917{
918 struct ieee80211_channel *c;
919 int i;
920
921 flags &= IEEE80211_CHAN_ALLTURBO;
922 c = ic->ic_prevchan;
923 if (c != NULL && c->ic_freq == freq &&
924 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
925 return c;
926 /* brute force search */
927 for (i = 0; i < ic->ic_nchans; i++) {
928 c = &ic->ic_channels[i];
929 if (c->ic_freq == freq &&
930 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
931 return c;
932 }
933 return NULL;
934}
935
936/*
937 * Locate a channel given a channel number+flags. We cache
938 * the previous lookup to optimize switching between two
939 * channels--as happens with dynamic turbo.
940 */
941struct ieee80211_channel *
942ieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags)
943{
944 struct ieee80211_channel *c;
945 int i;
946
947 flags &= IEEE80211_CHAN_ALLTURBO;
948 c = ic->ic_prevchan;
949 if (c != NULL && c->ic_ieee == ieee &&
950 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
951 return c;
952 /* brute force search */
953 for (i = 0; i < ic->ic_nchans; i++) {
954 c = &ic->ic_channels[i];
955 if (c->ic_ieee == ieee &&
956 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
957 return c;
958 }
959 return NULL;
960}
961
962static void
963addmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword)
964{
965#define ADD(_ic, _s, _o) \
966 ifmedia_add(media, \
967 IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL)
968 static const u_int mopts[IEEE80211_MODE_MAX] = {
969 [IEEE80211_MODE_AUTO] = IFM_AUTO,
970 [IEEE80211_MODE_11A] = IFM_IEEE80211_11A,
971 [IEEE80211_MODE_11B] = IFM_IEEE80211_11B,
972 [IEEE80211_MODE_11G] = IFM_IEEE80211_11G,
973 [IEEE80211_MODE_FH] = IFM_IEEE80211_FH,
974 [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
975 [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO,
976 [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
977 [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */
978 [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */
979 [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA,
980 [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG,
981 };
982 u_int mopt;
983
984 mopt = mopts[mode];
985 if (addsta)
986 ADD(ic, mword, mopt); /* STA mode has no cap */
987 if (caps & IEEE80211_C_IBSS)
988 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC);
989 if (caps & IEEE80211_C_HOSTAP)
990 ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP);
991 if (caps & IEEE80211_C_AHDEMO)
992 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0);
993 if (caps & IEEE80211_C_MONITOR)
994 ADD(media, mword, mopt | IFM_IEEE80211_MONITOR);
995 if (caps & IEEE80211_C_WDS)
996 ADD(media, mword, mopt | IFM_IEEE80211_WDS);
997 if (caps & IEEE80211_C_MBSS)
998 ADD(media, mword, mopt | IFM_IEEE80211_MBSS);
999#undef ADD
1000}
1001
1002/*
1003 * Setup the media data structures according to the channel and
1004 * rate tables.
1005 */
1006static int
1007ieee80211_media_setup(struct ieee80211com *ic,
1008 struct ifmedia *media, int caps, int addsta,
1009 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
1010{
| 452 }
453 /* auto-enable s/w beacon miss support */
454 if (flags & IEEE80211_CLONE_NOBEACONS)
455 vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS;
456 /* auto-generated or user supplied MAC address */
457 if (flags & (IEEE80211_CLONE_BSSID|IEEE80211_CLONE_MACADDR))
458 vap->iv_flags_ext |= IEEE80211_FEXT_UNIQMAC;
459 /*
460 * Enable various functionality by default if we're
461 * capable; the driver can override us if it knows better.
462 */
463 if (vap->iv_caps & IEEE80211_C_WME)
464 vap->iv_flags |= IEEE80211_F_WME;
465 if (vap->iv_caps & IEEE80211_C_BURST)
466 vap->iv_flags |= IEEE80211_F_BURST;
467 /* NB: bg scanning only makes sense for station mode right now */
468 if (vap->iv_opmode == IEEE80211_M_STA &&
469 (vap->iv_caps & IEEE80211_C_BGSCAN))
470 vap->iv_flags |= IEEE80211_F_BGSCAN;
471 vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */
472 /* NB: DFS support only makes sense for ap mode right now */
473 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
474 (vap->iv_caps & IEEE80211_C_DFS))
475 vap->iv_flags_ext |= IEEE80211_FEXT_DFS;
476
477 vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */
478 vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT;
479 vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT;
480 /*
481 * Install a default reset method for the ioctl support;
482 * the driver can override this.
483 */
484 vap->iv_reset = default_reset;
485
486 IEEE80211_ADDR_COPY(vap->iv_myaddr, macaddr);
487
488 ieee80211_sysctl_vattach(vap);
489 ieee80211_crypto_vattach(vap);
490 ieee80211_node_vattach(vap);
491 ieee80211_power_vattach(vap);
492 ieee80211_proto_vattach(vap);
493#ifdef IEEE80211_SUPPORT_SUPERG
494 ieee80211_superg_vattach(vap);
495#endif
496 ieee80211_ht_vattach(vap);
497 ieee80211_scan_vattach(vap);
498 ieee80211_regdomain_vattach(vap);
499 ieee80211_radiotap_vattach(vap);
500 ieee80211_ratectl_set(vap, IEEE80211_RATECTL_NONE);
501
502 return 0;
503}
504
505/*
506 * Activate a vap. State should have been prepared with a
507 * call to ieee80211_vap_setup and by the driver. On return
508 * from this call the vap is ready for use.
509 */
510int
511ieee80211_vap_attach(struct ieee80211vap *vap,
512 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
513{
514 struct ifnet *ifp = vap->iv_ifp;
515 struct ieee80211com *ic = vap->iv_ic;
516 struct ifmediareq imr;
517 int maxrate;
518
519 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
520 "%s: %s parent %s flags 0x%x flags_ext 0x%x\n",
521 __func__, ieee80211_opmode_name[vap->iv_opmode],
522 ic->ic_ifp->if_xname, vap->iv_flags, vap->iv_flags_ext);
523
524 /*
525 * Do late attach work that cannot happen until after
526 * the driver has had a chance to override defaults.
527 */
528 ieee80211_node_latevattach(vap);
529 ieee80211_power_latevattach(vap);
530
531 maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps,
532 vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat);
533 ieee80211_media_status(ifp, &imr);
534 /* NB: strip explicit mode; we're actually in autoselect */
535 ifmedia_set(&vap->iv_media,
536 imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO));
537 if (maxrate)
538 ifp->if_baudrate = IF_Mbps(maxrate);
539
540 ether_ifattach(ifp, vap->iv_myaddr);
541 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
542 /* NB: disallow transmit */
543 ifp->if_transmit = null_transmit;
544 ifp->if_output = null_output;
545 } else {
546 /* hook output method setup by ether_ifattach */
547 vap->iv_output = ifp->if_output;
548 ifp->if_output = ieee80211_output;
549 }
550 /* NB: if_mtu set by ether_ifattach to ETHERMTU */
551
552 IEEE80211_LOCK(ic);
553 TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next);
554 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
555#ifdef IEEE80211_SUPPORT_SUPERG
556 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
557#endif
558 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
559 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
560 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT);
561 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40);
562 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
563 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
564 IEEE80211_UNLOCK(ic);
565
566 return 1;
567}
568
569/*
570 * Tear down vap state and reclaim the ifnet.
571 * The driver is assumed to have prepared for
572 * this; e.g. by turning off interrupts for the
573 * underlying device.
574 */
575void
576ieee80211_vap_detach(struct ieee80211vap *vap)
577{
578 struct ieee80211com *ic = vap->iv_ic;
579 struct ifnet *ifp = vap->iv_ifp;
580
581 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n",
582 __func__, ieee80211_opmode_name[vap->iv_opmode],
583 ic->ic_ifp->if_xname);
584
585 /* NB: bpfdetach is called by ether_ifdetach and claims all taps */
586 ether_ifdetach(ifp);
587
588 ieee80211_stop(vap);
589
590 /*
591 * Flush any deferred vap tasks.
592 */
593 ieee80211_draintask(ic, &vap->iv_nstate_task);
594 ieee80211_draintask(ic, &vap->iv_swbmiss_task);
595
596 /* XXX band-aid until ifnet handles this for us */
597 taskqueue_drain(taskqueue_swi, &ifp->if_linktask);
598
599 IEEE80211_LOCK(ic);
600 KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running"));
601 TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next);
602 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
603#ifdef IEEE80211_SUPPORT_SUPERG
604 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
605#endif
606 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
607 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
608 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT);
609 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40);
610 /* NB: this handles the bpfdetach done below */
611 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF);
612 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
613 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
614 IEEE80211_UNLOCK(ic);
615
616 ifmedia_removeall(&vap->iv_media);
617
618 ieee80211_radiotap_vdetach(vap);
619 ieee80211_regdomain_vdetach(vap);
620 ieee80211_scan_vdetach(vap);
621#ifdef IEEE80211_SUPPORT_SUPERG
622 ieee80211_superg_vdetach(vap);
623#endif
624 ieee80211_ht_vdetach(vap);
625 /* NB: must be before ieee80211_node_vdetach */
626 ieee80211_proto_vdetach(vap);
627 ieee80211_crypto_vdetach(vap);
628 ieee80211_power_vdetach(vap);
629 ieee80211_node_vdetach(vap);
630 ieee80211_sysctl_vdetach(vap);
631
632 if_free(ifp);
633}
634
635/*
636 * Synchronize flag bit state in the parent ifnet structure
637 * according to the state of all vap ifnet's. This is used,
638 * for example, to handle IFF_PROMISC and IFF_ALLMULTI.
639 */
640void
641ieee80211_syncifflag_locked(struct ieee80211com *ic, int flag)
642{
643 struct ifnet *ifp = ic->ic_ifp;
644 struct ieee80211vap *vap;
645 int bit, oflags;
646
647 IEEE80211_LOCK_ASSERT(ic);
648
649 bit = 0;
650 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
651 if (vap->iv_ifp->if_flags & flag) {
652 /*
653 * XXX the bridge sets PROMISC but we don't want to
654 * enable it on the device, discard here so all the
655 * drivers don't need to special-case it
656 */
657 if (flag == IFF_PROMISC &&
658 !(vap->iv_opmode == IEEE80211_M_MONITOR ||
659 (vap->iv_opmode == IEEE80211_M_AHDEMO &&
660 (vap->iv_caps & IEEE80211_C_TDMA) == 0)))
661 continue;
662 bit = 1;
663 break;
664 }
665 oflags = ifp->if_flags;
666 if (bit)
667 ifp->if_flags |= flag;
668 else
669 ifp->if_flags &= ~flag;
670 if ((ifp->if_flags ^ oflags) & flag) {
671 /* XXX should we return 1/0 and let caller do this? */
672 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
673 if (flag == IFF_PROMISC)
674 ieee80211_runtask(ic, &ic->ic_promisc_task);
675 else if (flag == IFF_ALLMULTI)
676 ieee80211_runtask(ic, &ic->ic_mcast_task);
677 }
678 }
679}
680
681/*
682 * Synchronize flag bit state in the com structure
683 * according to the state of all vap's. This is used,
684 * for example, to handle state changes via ioctls.
685 */
686static void
687ieee80211_syncflag_locked(struct ieee80211com *ic, int flag)
688{
689 struct ieee80211vap *vap;
690 int bit;
691
692 IEEE80211_LOCK_ASSERT(ic);
693
694 bit = 0;
695 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
696 if (vap->iv_flags & flag) {
697 bit = 1;
698 break;
699 }
700 if (bit)
701 ic->ic_flags |= flag;
702 else
703 ic->ic_flags &= ~flag;
704}
705
706void
707ieee80211_syncflag(struct ieee80211vap *vap, int flag)
708{
709 struct ieee80211com *ic = vap->iv_ic;
710
711 IEEE80211_LOCK(ic);
712 if (flag < 0) {
713 flag = -flag;
714 vap->iv_flags &= ~flag;
715 } else
716 vap->iv_flags |= flag;
717 ieee80211_syncflag_locked(ic, flag);
718 IEEE80211_UNLOCK(ic);
719}
720
721/*
722 * Synchronize flags_ht bit state in the com structure
723 * according to the state of all vap's. This is used,
724 * for example, to handle state changes via ioctls.
725 */
726static void
727ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag)
728{
729 struct ieee80211vap *vap;
730 int bit;
731
732 IEEE80211_LOCK_ASSERT(ic);
733
734 bit = 0;
735 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
736 if (vap->iv_flags_ht & flag) {
737 bit = 1;
738 break;
739 }
740 if (bit)
741 ic->ic_flags_ht |= flag;
742 else
743 ic->ic_flags_ht &= ~flag;
744}
745
746void
747ieee80211_syncflag_ht(struct ieee80211vap *vap, int flag)
748{
749 struct ieee80211com *ic = vap->iv_ic;
750
751 IEEE80211_LOCK(ic);
752 if (flag < 0) {
753 flag = -flag;
754 vap->iv_flags_ht &= ~flag;
755 } else
756 vap->iv_flags_ht |= flag;
757 ieee80211_syncflag_ht_locked(ic, flag);
758 IEEE80211_UNLOCK(ic);
759}
760
761/*
762 * Synchronize flags_ext bit state in the com structure
763 * according to the state of all vap's. This is used,
764 * for example, to handle state changes via ioctls.
765 */
766static void
767ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag)
768{
769 struct ieee80211vap *vap;
770 int bit;
771
772 IEEE80211_LOCK_ASSERT(ic);
773
774 bit = 0;
775 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
776 if (vap->iv_flags_ext & flag) {
777 bit = 1;
778 break;
779 }
780 if (bit)
781 ic->ic_flags_ext |= flag;
782 else
783 ic->ic_flags_ext &= ~flag;
784}
785
786void
787ieee80211_syncflag_ext(struct ieee80211vap *vap, int flag)
788{
789 struct ieee80211com *ic = vap->iv_ic;
790
791 IEEE80211_LOCK(ic);
792 if (flag < 0) {
793 flag = -flag;
794 vap->iv_flags_ext &= ~flag;
795 } else
796 vap->iv_flags_ext |= flag;
797 ieee80211_syncflag_ext_locked(ic, flag);
798 IEEE80211_UNLOCK(ic);
799}
800
801static __inline int
802mapgsm(u_int freq, u_int flags)
803{
804 freq *= 10;
805 if (flags & IEEE80211_CHAN_QUARTER)
806 freq += 5;
807 else if (flags & IEEE80211_CHAN_HALF)
808 freq += 10;
809 else
810 freq += 20;
811 /* NB: there is no 907/20 wide but leave room */
812 return (freq - 906*10) / 5;
813}
814
815static __inline int
816mappsb(u_int freq, u_int flags)
817{
818 return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5;
819}
820
821/*
822 * Convert MHz frequency to IEEE channel number.
823 */
824int
825ieee80211_mhz2ieee(u_int freq, u_int flags)
826{
827#define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990)
828 if (flags & IEEE80211_CHAN_GSM)
829 return mapgsm(freq, flags);
830 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
831 if (freq == 2484)
832 return 14;
833 if (freq < 2484)
834 return ((int) freq - 2407) / 5;
835 else
836 return 15 + ((freq - 2512) / 20);
837 } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */
838 if (freq <= 5000) {
839 /* XXX check regdomain? */
840 if (IS_FREQ_IN_PSB(freq))
841 return mappsb(freq, flags);
842 return (freq - 4000) / 5;
843 } else
844 return (freq - 5000) / 5;
845 } else { /* either, guess */
846 if (freq == 2484)
847 return 14;
848 if (freq < 2484) {
849 if (907 <= freq && freq <= 922)
850 return mapgsm(freq, flags);
851 return ((int) freq - 2407) / 5;
852 }
853 if (freq < 5000) {
854 if (IS_FREQ_IN_PSB(freq))
855 return mappsb(freq, flags);
856 else if (freq > 4900)
857 return (freq - 4000) / 5;
858 else
859 return 15 + ((freq - 2512) / 20);
860 }
861 return (freq - 5000) / 5;
862 }
863#undef IS_FREQ_IN_PSB
864}
865
866/*
867 * Convert channel to IEEE channel number.
868 */
869int
870ieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c)
871{
872 if (c == NULL) {
873 if_printf(ic->ic_ifp, "invalid channel (NULL)\n");
874 return 0; /* XXX */
875 }
876 return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee);
877}
878
879/*
880 * Convert IEEE channel number to MHz frequency.
881 */
882u_int
883ieee80211_ieee2mhz(u_int chan, u_int flags)
884{
885 if (flags & IEEE80211_CHAN_GSM)
886 return 907 + 5 * (chan / 10);
887 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
888 if (chan == 14)
889 return 2484;
890 if (chan < 14)
891 return 2407 + chan*5;
892 else
893 return 2512 + ((chan-15)*20);
894 } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */
895 if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) {
896 chan -= 37;
897 return 4940 + chan*5 + (chan % 5 ? 2 : 0);
898 }
899 return 5000 + (chan*5);
900 } else { /* either, guess */
901 /* XXX can't distinguish PSB+GSM channels */
902 if (chan == 14)
903 return 2484;
904 if (chan < 14) /* 0-13 */
905 return 2407 + chan*5;
906 if (chan < 27) /* 15-26 */
907 return 2512 + ((chan-15)*20);
908 return 5000 + (chan*5);
909 }
910}
911
912/*
913 * Locate a channel given a frequency+flags. We cache
914 * the previous lookup to optimize switching between two
915 * channels--as happens with dynamic turbo.
916 */
917struct ieee80211_channel *
918ieee80211_find_channel(struct ieee80211com *ic, int freq, int flags)
919{
920 struct ieee80211_channel *c;
921 int i;
922
923 flags &= IEEE80211_CHAN_ALLTURBO;
924 c = ic->ic_prevchan;
925 if (c != NULL && c->ic_freq == freq &&
926 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
927 return c;
928 /* brute force search */
929 for (i = 0; i < ic->ic_nchans; i++) {
930 c = &ic->ic_channels[i];
931 if (c->ic_freq == freq &&
932 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
933 return c;
934 }
935 return NULL;
936}
937
938/*
939 * Locate a channel given a channel number+flags. We cache
940 * the previous lookup to optimize switching between two
941 * channels--as happens with dynamic turbo.
942 */
943struct ieee80211_channel *
944ieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags)
945{
946 struct ieee80211_channel *c;
947 int i;
948
949 flags &= IEEE80211_CHAN_ALLTURBO;
950 c = ic->ic_prevchan;
951 if (c != NULL && c->ic_ieee == ieee &&
952 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
953 return c;
954 /* brute force search */
955 for (i = 0; i < ic->ic_nchans; i++) {
956 c = &ic->ic_channels[i];
957 if (c->ic_ieee == ieee &&
958 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
959 return c;
960 }
961 return NULL;
962}
963
964static void
965addmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword)
966{
967#define ADD(_ic, _s, _o) \
968 ifmedia_add(media, \
969 IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL)
970 static const u_int mopts[IEEE80211_MODE_MAX] = {
971 [IEEE80211_MODE_AUTO] = IFM_AUTO,
972 [IEEE80211_MODE_11A] = IFM_IEEE80211_11A,
973 [IEEE80211_MODE_11B] = IFM_IEEE80211_11B,
974 [IEEE80211_MODE_11G] = IFM_IEEE80211_11G,
975 [IEEE80211_MODE_FH] = IFM_IEEE80211_FH,
976 [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
977 [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO,
978 [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
979 [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */
980 [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */
981 [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA,
982 [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG,
983 };
984 u_int mopt;
985
986 mopt = mopts[mode];
987 if (addsta)
988 ADD(ic, mword, mopt); /* STA mode has no cap */
989 if (caps & IEEE80211_C_IBSS)
990 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC);
991 if (caps & IEEE80211_C_HOSTAP)
992 ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP);
993 if (caps & IEEE80211_C_AHDEMO)
994 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0);
995 if (caps & IEEE80211_C_MONITOR)
996 ADD(media, mword, mopt | IFM_IEEE80211_MONITOR);
997 if (caps & IEEE80211_C_WDS)
998 ADD(media, mword, mopt | IFM_IEEE80211_WDS);
999 if (caps & IEEE80211_C_MBSS)
1000 ADD(media, mword, mopt | IFM_IEEE80211_MBSS);
1001#undef ADD
1002}
1003
1004/*
1005 * Setup the media data structures according to the channel and
1006 * rate tables.
1007 */
1008static int
1009ieee80211_media_setup(struct ieee80211com *ic,
1010 struct ifmedia *media, int caps, int addsta,
1011 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
1012{
|
1011 int i, j, mode, rate, maxrate, mword, r;
| 1013 int i, j, rate, maxrate, mword, r;
1014 enum ieee80211_phymode mode;
|
1012 const struct ieee80211_rateset *rs;
1013 struct ieee80211_rateset allrates;
1014
1015 /*
1016 * Fill in media characteristics.
1017 */
1018 ifmedia_init(media, 0, media_change, media_stat);
1019 maxrate = 0;
1020 /*
1021 * Add media for legacy operating modes.
1022 */
1023 memset(&allrates, 0, sizeof(allrates));
1024 for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) {
1025 if (isclr(ic->ic_modecaps, mode))
1026 continue;
1027 addmedia(media, caps, addsta, mode, IFM_AUTO);
1028 if (mode == IEEE80211_MODE_AUTO)
1029 continue;
1030 rs = &ic->ic_sup_rates[mode];
1031 for (i = 0; i < rs->rs_nrates; i++) {
1032 rate = rs->rs_rates[i];
1033 mword = ieee80211_rate2media(ic, rate, mode);
1034 if (mword == 0)
1035 continue;
1036 addmedia(media, caps, addsta, mode, mword);
1037 /*
1038 * Add legacy rate to the collection of all rates.
1039 */
1040 r = rate & IEEE80211_RATE_VAL;
1041 for (j = 0; j < allrates.rs_nrates; j++)
1042 if (allrates.rs_rates[j] == r)
1043 break;
1044 if (j == allrates.rs_nrates) {
1045 /* unique, add to the set */
1046 allrates.rs_rates[j] = r;
1047 allrates.rs_nrates++;
1048 }
1049 rate = (rate & IEEE80211_RATE_VAL) / 2;
1050 if (rate > maxrate)
1051 maxrate = rate;
1052 }
1053 }
1054 for (i = 0; i < allrates.rs_nrates; i++) {
1055 mword = ieee80211_rate2media(ic, allrates.rs_rates[i],
1056 IEEE80211_MODE_AUTO);
1057 if (mword == 0)
1058 continue;
1059 /* NB: remove media options from mword */
1060 addmedia(media, caps, addsta,
1061 IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword));
1062 }
1063 /*
1064 * Add HT/11n media. Note that we do not have enough
1065 * bits in the media subtype to express the MCS so we
1066 * use a "placeholder" media subtype and any fixed MCS
1067 * must be specified with a different mechanism.
1068 */
1069 for (; mode <= IEEE80211_MODE_11NG; mode++) {
1070 if (isclr(ic->ic_modecaps, mode))
1071 continue;
1072 addmedia(media, caps, addsta, mode, IFM_AUTO);
1073 addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS);
1074 }
1075 if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) ||
1076 isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) {
1077 addmedia(media, caps, addsta,
1078 IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS);
1079 i = ic->ic_txstream * 8 - 1;
1080 if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) &&
1081 (ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40))
1082 rate = ieee80211_htrates[i].ht40_rate_400ns;
1083 else if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40))
1084 rate = ieee80211_htrates[i].ht40_rate_800ns;
1085 else if ((ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20))
1086 rate = ieee80211_htrates[i].ht20_rate_400ns;
1087 else
1088 rate = ieee80211_htrates[i].ht20_rate_800ns;
1089 if (rate > maxrate)
1090 maxrate = rate;
1091 }
1092 return maxrate;
1093}
1094
1095void
1096ieee80211_media_init(struct ieee80211com *ic)
1097{
1098 struct ifnet *ifp = ic->ic_ifp;
1099 int maxrate;
1100
1101 /* NB: this works because the structure is initialized to zero */
1102 if (!LIST_EMPTY(&ic->ic_media.ifm_list)) {
1103 /*
1104 * We are re-initializing the channel list; clear
1105 * the existing media state as the media routines
1106 * don't suppress duplicates.
1107 */
1108 ifmedia_removeall(&ic->ic_media);
1109 }
1110 ieee80211_chan_init(ic);
1111
1112 /*
1113 * Recalculate media settings in case new channel list changes
1114 * the set of available modes.
1115 */
1116 maxrate = ieee80211_media_setup(ic, &ic->ic_media, ic->ic_caps, 1,
1117 ieee80211com_media_change, ieee80211com_media_status);
1118 /* NB: strip explicit mode; we're actually in autoselect */
1119 ifmedia_set(&ic->ic_media,
1120 media_status(ic->ic_opmode, ic->ic_curchan) &~
1121 (IFM_MMASK | IFM_IEEE80211_TURBO));
1122 if (maxrate)
1123 ifp->if_baudrate = IF_Mbps(maxrate);
1124
1125 /* XXX need to propagate new media settings to vap's */
1126}
1127
1128/* XXX inline or eliminate? */
1129const struct ieee80211_rateset *
1130ieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c)
1131{
1132 /* XXX does this work for 11ng basic rates? */
1133 return &ic->ic_sup_rates[ieee80211_chan2mode(c)];
1134}
1135
1136void
1137ieee80211_announce(struct ieee80211com *ic)
1138{
1139 struct ifnet *ifp = ic->ic_ifp;
| 1015 const struct ieee80211_rateset *rs;
1016 struct ieee80211_rateset allrates;
1017
1018 /*
1019 * Fill in media characteristics.
1020 */
1021 ifmedia_init(media, 0, media_change, media_stat);
1022 maxrate = 0;
1023 /*
1024 * Add media for legacy operating modes.
1025 */
1026 memset(&allrates, 0, sizeof(allrates));
1027 for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) {
1028 if (isclr(ic->ic_modecaps, mode))
1029 continue;
1030 addmedia(media, caps, addsta, mode, IFM_AUTO);
1031 if (mode == IEEE80211_MODE_AUTO)
1032 continue;
1033 rs = &ic->ic_sup_rates[mode];
1034 for (i = 0; i < rs->rs_nrates; i++) {
1035 rate = rs->rs_rates[i];
1036 mword = ieee80211_rate2media(ic, rate, mode);
1037 if (mword == 0)
1038 continue;
1039 addmedia(media, caps, addsta, mode, mword);
1040 /*
1041 * Add legacy rate to the collection of all rates.
1042 */
1043 r = rate & IEEE80211_RATE_VAL;
1044 for (j = 0; j < allrates.rs_nrates; j++)
1045 if (allrates.rs_rates[j] == r)
1046 break;
1047 if (j == allrates.rs_nrates) {
1048 /* unique, add to the set */
1049 allrates.rs_rates[j] = r;
1050 allrates.rs_nrates++;
1051 }
1052 rate = (rate & IEEE80211_RATE_VAL) / 2;
1053 if (rate > maxrate)
1054 maxrate = rate;
1055 }
1056 }
1057 for (i = 0; i < allrates.rs_nrates; i++) {
1058 mword = ieee80211_rate2media(ic, allrates.rs_rates[i],
1059 IEEE80211_MODE_AUTO);
1060 if (mword == 0)
1061 continue;
1062 /* NB: remove media options from mword */
1063 addmedia(media, caps, addsta,
1064 IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword));
1065 }
1066 /*
1067 * Add HT/11n media. Note that we do not have enough
1068 * bits in the media subtype to express the MCS so we
1069 * use a "placeholder" media subtype and any fixed MCS
1070 * must be specified with a different mechanism.
1071 */
1072 for (; mode <= IEEE80211_MODE_11NG; mode++) {
1073 if (isclr(ic->ic_modecaps, mode))
1074 continue;
1075 addmedia(media, caps, addsta, mode, IFM_AUTO);
1076 addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS);
1077 }
1078 if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) ||
1079 isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) {
1080 addmedia(media, caps, addsta,
1081 IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS);
1082 i = ic->ic_txstream * 8 - 1;
1083 if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) &&
1084 (ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40))
1085 rate = ieee80211_htrates[i].ht40_rate_400ns;
1086 else if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40))
1087 rate = ieee80211_htrates[i].ht40_rate_800ns;
1088 else if ((ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20))
1089 rate = ieee80211_htrates[i].ht20_rate_400ns;
1090 else
1091 rate = ieee80211_htrates[i].ht20_rate_800ns;
1092 if (rate > maxrate)
1093 maxrate = rate;
1094 }
1095 return maxrate;
1096}
1097
1098void
1099ieee80211_media_init(struct ieee80211com *ic)
1100{
1101 struct ifnet *ifp = ic->ic_ifp;
1102 int maxrate;
1103
1104 /* NB: this works because the structure is initialized to zero */
1105 if (!LIST_EMPTY(&ic->ic_media.ifm_list)) {
1106 /*
1107 * We are re-initializing the channel list; clear
1108 * the existing media state as the media routines
1109 * don't suppress duplicates.
1110 */
1111 ifmedia_removeall(&ic->ic_media);
1112 }
1113 ieee80211_chan_init(ic);
1114
1115 /*
1116 * Recalculate media settings in case new channel list changes
1117 * the set of available modes.
1118 */
1119 maxrate = ieee80211_media_setup(ic, &ic->ic_media, ic->ic_caps, 1,
1120 ieee80211com_media_change, ieee80211com_media_status);
1121 /* NB: strip explicit mode; we're actually in autoselect */
1122 ifmedia_set(&ic->ic_media,
1123 media_status(ic->ic_opmode, ic->ic_curchan) &~
1124 (IFM_MMASK | IFM_IEEE80211_TURBO));
1125 if (maxrate)
1126 ifp->if_baudrate = IF_Mbps(maxrate);
1127
1128 /* XXX need to propagate new media settings to vap's */
1129}
1130
1131/* XXX inline or eliminate? */
1132const struct ieee80211_rateset *
1133ieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c)
1134{
1135 /* XXX does this work for 11ng basic rates? */
1136 return &ic->ic_sup_rates[ieee80211_chan2mode(c)];
1137}
1138
1139void
1140ieee80211_announce(struct ieee80211com *ic)
1141{
1142 struct ifnet *ifp = ic->ic_ifp;
|
1140 int i, mode, rate, mword;
| 1143 int i, rate, mword;
1144 enum ieee80211_phymode mode;
|
1141 const struct ieee80211_rateset *rs;
1142
1143 /* NB: skip AUTO since it has no rates */
1144 for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) {
1145 if (isclr(ic->ic_modecaps, mode))
1146 continue;
1147 if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]);
1148 rs = &ic->ic_sup_rates[mode];
1149 for (i = 0; i < rs->rs_nrates; i++) {
1150 mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode);
1151 if (mword == 0)
1152 continue;
1153 rate = ieee80211_media2rate(mword);
1154 printf("%s%d%sMbps", (i != 0 ? " " : ""),
1155 rate / 2, ((rate & 0x1) != 0 ? ".5" : ""));
1156 }
1157 printf("\n");
1158 }
1159 ieee80211_ht_announce(ic);
1160}
1161
1162void
1163ieee80211_announce_channels(struct ieee80211com *ic)
1164{
1165 const struct ieee80211_channel *c;
1166 char type;
1167 int i, cw;
1168
1169 printf("Chan Freq CW RegPwr MinPwr MaxPwr\n");
1170 for (i = 0; i < ic->ic_nchans; i++) {
1171 c = &ic->ic_channels[i];
1172 if (IEEE80211_IS_CHAN_ST(c))
1173 type = 'S';
1174 else if (IEEE80211_IS_CHAN_108A(c))
1175 type = 'T';
1176 else if (IEEE80211_IS_CHAN_108G(c))
1177 type = 'G';
1178 else if (IEEE80211_IS_CHAN_HT(c))
1179 type = 'n';
1180 else if (IEEE80211_IS_CHAN_A(c))
1181 type = 'a';
1182 else if (IEEE80211_IS_CHAN_ANYG(c))
1183 type = 'g';
1184 else if (IEEE80211_IS_CHAN_B(c))
1185 type = 'b';
1186 else
1187 type = 'f';
1188 if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c))
1189 cw = 40;
1190 else if (IEEE80211_IS_CHAN_HALF(c))
1191 cw = 10;
1192 else if (IEEE80211_IS_CHAN_QUARTER(c))
1193 cw = 5;
1194 else
1195 cw = 20;
1196 printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n"
1197 , c->ic_ieee, c->ic_freq, type
1198 , cw
1199 , IEEE80211_IS_CHAN_HT40U(c) ? '+' :
1200 IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' '
1201 , c->ic_maxregpower
1202 , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0
1203 , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0
1204 );
1205 }
1206}
1207
1208static int
1209media2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode)
1210{
1211 switch (IFM_MODE(ime->ifm_media)) {
1212 case IFM_IEEE80211_11A:
1213 *mode = IEEE80211_MODE_11A;
1214 break;
1215 case IFM_IEEE80211_11B:
1216 *mode = IEEE80211_MODE_11B;
1217 break;
1218 case IFM_IEEE80211_11G:
1219 *mode = IEEE80211_MODE_11G;
1220 break;
1221 case IFM_IEEE80211_FH:
1222 *mode = IEEE80211_MODE_FH;
1223 break;
1224 case IFM_IEEE80211_11NA:
1225 *mode = IEEE80211_MODE_11NA;
1226 break;
1227 case IFM_IEEE80211_11NG:
1228 *mode = IEEE80211_MODE_11NG;
1229 break;
1230 case IFM_AUTO:
1231 *mode = IEEE80211_MODE_AUTO;
1232 break;
1233 default:
1234 return 0;
1235 }
1236 /*
1237 * Turbo mode is an ``option''.
1238 * XXX does not apply to AUTO
1239 */
1240 if (ime->ifm_media & IFM_IEEE80211_TURBO) {
1241 if (*mode == IEEE80211_MODE_11A) {
1242 if (flags & IEEE80211_F_TURBOP)
1243 *mode = IEEE80211_MODE_TURBO_A;
1244 else
1245 *mode = IEEE80211_MODE_STURBO_A;
1246 } else if (*mode == IEEE80211_MODE_11G)
1247 *mode = IEEE80211_MODE_TURBO_G;
1248 else
1249 return 0;
1250 }
1251 /* XXX HT40 +/- */
1252 return 1;
1253}
1254
1255/*
1256 * Handle a media change request on the underlying interface.
1257 */
1258int
1259ieee80211com_media_change(struct ifnet *ifp)
1260{
1261 return EINVAL;
1262}
1263
1264/*
1265 * Handle a media change request on the vap interface.
1266 */
1267int
1268ieee80211_media_change(struct ifnet *ifp)
1269{
1270 struct ieee80211vap *vap = ifp->if_softc;
1271 struct ifmedia_entry *ime = vap->iv_media.ifm_cur;
1272 uint16_t newmode;
1273
1274 if (!media2mode(ime, vap->iv_flags, &newmode))
1275 return EINVAL;
1276 if (vap->iv_des_mode != newmode) {
1277 vap->iv_des_mode = newmode;
1278 /* XXX kick state machine if up+running */
1279 }
1280 return 0;
1281}
1282
1283/*
1284 * Common code to calculate the media status word
1285 * from the operating mode and channel state.
1286 */
1287static int
1288media_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan)
1289{
1290 int status;
1291
1292 status = IFM_IEEE80211;
1293 switch (opmode) {
1294 case IEEE80211_M_STA:
1295 break;
1296 case IEEE80211_M_IBSS:
1297 status |= IFM_IEEE80211_ADHOC;
1298 break;
1299 case IEEE80211_M_HOSTAP:
1300 status |= IFM_IEEE80211_HOSTAP;
1301 break;
1302 case IEEE80211_M_MONITOR:
1303 status |= IFM_IEEE80211_MONITOR;
1304 break;
1305 case IEEE80211_M_AHDEMO:
1306 status |= IFM_IEEE80211_ADHOC | IFM_FLAG0;
1307 break;
1308 case IEEE80211_M_WDS:
1309 status |= IFM_IEEE80211_WDS;
1310 break;
1311 case IEEE80211_M_MBSS:
1312 status |= IFM_IEEE80211_MBSS;
1313 break;
1314 }
1315 if (IEEE80211_IS_CHAN_HTA(chan)) {
1316 status |= IFM_IEEE80211_11NA;
1317 } else if (IEEE80211_IS_CHAN_HTG(chan)) {
1318 status |= IFM_IEEE80211_11NG;
1319 } else if (IEEE80211_IS_CHAN_A(chan)) {
1320 status |= IFM_IEEE80211_11A;
1321 } else if (IEEE80211_IS_CHAN_B(chan)) {
1322 status |= IFM_IEEE80211_11B;
1323 } else if (IEEE80211_IS_CHAN_ANYG(chan)) {
1324 status |= IFM_IEEE80211_11G;
1325 } else if (IEEE80211_IS_CHAN_FHSS(chan)) {
1326 status |= IFM_IEEE80211_FH;
1327 }
1328 /* XXX else complain? */
1329
1330 if (IEEE80211_IS_CHAN_TURBO(chan))
1331 status |= IFM_IEEE80211_TURBO;
1332#if 0
1333 if (IEEE80211_IS_CHAN_HT20(chan))
1334 status |= IFM_IEEE80211_HT20;
1335 if (IEEE80211_IS_CHAN_HT40(chan))
1336 status |= IFM_IEEE80211_HT40;
1337#endif
1338 return status;
1339}
1340
1341static void
1342ieee80211com_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1343{
1344 struct ieee80211com *ic = ifp->if_l2com;
1345 struct ieee80211vap *vap;
1346
1347 imr->ifm_status = IFM_AVALID;
1348 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
1349 if (vap->iv_ifp->if_flags & IFF_UP) {
1350 imr->ifm_status |= IFM_ACTIVE;
1351 break;
1352 }
1353 imr->ifm_active = media_status(ic->ic_opmode, ic->ic_curchan);
1354 if (imr->ifm_status & IFM_ACTIVE)
1355 imr->ifm_current = imr->ifm_active;
1356}
1357
1358void
1359ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1360{
1361 struct ieee80211vap *vap = ifp->if_softc;
1362 struct ieee80211com *ic = vap->iv_ic;
1363 enum ieee80211_phymode mode;
1364
1365 imr->ifm_status = IFM_AVALID;
1366 /*
1367 * NB: use the current channel's mode to lock down a xmit
1368 * rate only when running; otherwise we may have a mismatch
1369 * in which case the rate will not be convertible.
1370 */
1371 if (vap->iv_state == IEEE80211_S_RUN) {
1372 imr->ifm_status |= IFM_ACTIVE;
1373 mode = ieee80211_chan2mode(ic->ic_curchan);
1374 } else
1375 mode = IEEE80211_MODE_AUTO;
1376 imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan);
1377 /*
1378 * Calculate a current rate if possible.
1379 */
1380 if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) {
1381 /*
1382 * A fixed rate is set, report that.
1383 */
1384 imr->ifm_active |= ieee80211_rate2media(ic,
1385 vap->iv_txparms[mode].ucastrate, mode);
1386 } else if (vap->iv_opmode == IEEE80211_M_STA) {
1387 /*
1388 * In station mode report the current transmit rate.
1389 */
1390 imr->ifm_active |= ieee80211_rate2media(ic,
1391 vap->iv_bss->ni_txrate, mode);
1392 } else
1393 imr->ifm_active |= IFM_AUTO;
1394 if (imr->ifm_status & IFM_ACTIVE)
1395 imr->ifm_current = imr->ifm_active;
1396}
1397
1398/*
1399 * Set the current phy mode and recalculate the active channel
1400 * set based on the available channels for this mode. Also
1401 * select a new default/current channel if the current one is
1402 * inappropriate for this mode.
1403 */
1404int
1405ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode)
1406{
1407 /*
1408 * Adjust basic rates in 11b/11g supported rate set.
1409 * Note that if operating on a hal/quarter rate channel
1410 * this is a noop as those rates sets are different
1411 * and used instead.
1412 */
1413 if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B)
1414 ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode);
1415
1416 ic->ic_curmode = mode;
1417 ieee80211_reset_erp(ic); /* reset ERP state */
1418
1419 return 0;
1420}
1421
1422/*
1423 * Return the phy mode for with the specified channel.
1424 */
1425enum ieee80211_phymode
1426ieee80211_chan2mode(const struct ieee80211_channel *chan)
1427{
1428
1429 if (IEEE80211_IS_CHAN_HTA(chan))
1430 return IEEE80211_MODE_11NA;
1431 else if (IEEE80211_IS_CHAN_HTG(chan))
1432 return IEEE80211_MODE_11NG;
1433 else if (IEEE80211_IS_CHAN_108G(chan))
1434 return IEEE80211_MODE_TURBO_G;
1435 else if (IEEE80211_IS_CHAN_ST(chan))
1436 return IEEE80211_MODE_STURBO_A;
1437 else if (IEEE80211_IS_CHAN_TURBO(chan))
1438 return IEEE80211_MODE_TURBO_A;
1439 else if (IEEE80211_IS_CHAN_HALF(chan))
1440 return IEEE80211_MODE_HALF;
1441 else if (IEEE80211_IS_CHAN_QUARTER(chan))
1442 return IEEE80211_MODE_QUARTER;
1443 else if (IEEE80211_IS_CHAN_A(chan))
1444 return IEEE80211_MODE_11A;
1445 else if (IEEE80211_IS_CHAN_ANYG(chan))
1446 return IEEE80211_MODE_11G;
1447 else if (IEEE80211_IS_CHAN_B(chan))
1448 return IEEE80211_MODE_11B;
1449 else if (IEEE80211_IS_CHAN_FHSS(chan))
1450 return IEEE80211_MODE_FH;
1451
1452 /* NB: should not get here */
1453 printf("%s: cannot map channel to mode; freq %u flags 0x%x\n",
1454 __func__, chan->ic_freq, chan->ic_flags);
1455 return IEEE80211_MODE_11B;
1456}
1457
1458struct ratemedia {
1459 u_int match; /* rate + mode */
1460 u_int media; /* if_media rate */
1461};
1462
1463static int
1464findmedia(const struct ratemedia rates[], int n, u_int match)
1465{
1466 int i;
1467
1468 for (i = 0; i < n; i++)
1469 if (rates[i].match == match)
1470 return rates[i].media;
1471 return IFM_AUTO;
1472}
1473
1474/*
1475 * Convert IEEE80211 rate value to ifmedia subtype.
1476 * Rate is either a legacy rate in units of 0.5Mbps
1477 * or an MCS index.
1478 */
1479int
1480ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode)
1481{
1482#define N(a) (sizeof(a) / sizeof(a[0]))
1483 static const struct ratemedia rates[] = {
1484 { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 },
1485 { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 },
1486 { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 },
1487 { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 },
1488 { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 },
1489 { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 },
1490 { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 },
1491 { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 },
1492 { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 },
1493 { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 },
1494 { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 },
1495 { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 },
1496 { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 },
1497 { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 },
1498 { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 },
1499 { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 },
1500 { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 },
1501 { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 },
1502 { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 },
1503 { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 },
1504 { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 },
1505 { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 },
1506 { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 },
1507 { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 },
1508 { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 },
1509 { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 },
1510 { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 },
1511 { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 },
1512 { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 },
1513 { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 },
1514 /* NB: OFDM72 doesn't realy exist so we don't handle it */
1515 };
1516 static const struct ratemedia htrates[] = {
1517 { 0, IFM_IEEE80211_MCS },
1518 { 1, IFM_IEEE80211_MCS },
1519 { 2, IFM_IEEE80211_MCS },
1520 { 3, IFM_IEEE80211_MCS },
1521 { 4, IFM_IEEE80211_MCS },
1522 { 5, IFM_IEEE80211_MCS },
1523 { 6, IFM_IEEE80211_MCS },
1524 { 7, IFM_IEEE80211_MCS },
1525 { 8, IFM_IEEE80211_MCS },
1526 { 9, IFM_IEEE80211_MCS },
1527 { 10, IFM_IEEE80211_MCS },
1528 { 11, IFM_IEEE80211_MCS },
1529 { 12, IFM_IEEE80211_MCS },
1530 { 13, IFM_IEEE80211_MCS },
1531 { 14, IFM_IEEE80211_MCS },
1532 { 15, IFM_IEEE80211_MCS },
1533 { 16, IFM_IEEE80211_MCS },
1534 { 17, IFM_IEEE80211_MCS },
1535 { 18, IFM_IEEE80211_MCS },
1536 { 19, IFM_IEEE80211_MCS },
1537 { 20, IFM_IEEE80211_MCS },
1538 { 21, IFM_IEEE80211_MCS },
1539 { 22, IFM_IEEE80211_MCS },
1540 { 23, IFM_IEEE80211_MCS },
1541 { 24, IFM_IEEE80211_MCS },
1542 { 25, IFM_IEEE80211_MCS },
1543 { 26, IFM_IEEE80211_MCS },
1544 { 27, IFM_IEEE80211_MCS },
1545 { 28, IFM_IEEE80211_MCS },
1546 { 29, IFM_IEEE80211_MCS },
1547 { 30, IFM_IEEE80211_MCS },
1548 { 31, IFM_IEEE80211_MCS },
1549 { 32, IFM_IEEE80211_MCS },
1550 { 33, IFM_IEEE80211_MCS },
1551 { 34, IFM_IEEE80211_MCS },
1552 { 35, IFM_IEEE80211_MCS },
1553 { 36, IFM_IEEE80211_MCS },
1554 { 37, IFM_IEEE80211_MCS },
1555 { 38, IFM_IEEE80211_MCS },
1556 { 39, IFM_IEEE80211_MCS },
1557 { 40, IFM_IEEE80211_MCS },
1558 { 41, IFM_IEEE80211_MCS },
1559 { 42, IFM_IEEE80211_MCS },
1560 { 43, IFM_IEEE80211_MCS },
1561 { 44, IFM_IEEE80211_MCS },
1562 { 45, IFM_IEEE80211_MCS },
1563 { 46, IFM_IEEE80211_MCS },
1564 { 47, IFM_IEEE80211_MCS },
1565 { 48, IFM_IEEE80211_MCS },
1566 { 49, IFM_IEEE80211_MCS },
1567 { 50, IFM_IEEE80211_MCS },
1568 { 51, IFM_IEEE80211_MCS },
1569 { 52, IFM_IEEE80211_MCS },
1570 { 53, IFM_IEEE80211_MCS },
1571 { 54, IFM_IEEE80211_MCS },
1572 { 55, IFM_IEEE80211_MCS },
1573 { 56, IFM_IEEE80211_MCS },
1574 { 57, IFM_IEEE80211_MCS },
1575 { 58, IFM_IEEE80211_MCS },
1576 { 59, IFM_IEEE80211_MCS },
1577 { 60, IFM_IEEE80211_MCS },
1578 { 61, IFM_IEEE80211_MCS },
1579 { 62, IFM_IEEE80211_MCS },
1580 { 63, IFM_IEEE80211_MCS },
1581 { 64, IFM_IEEE80211_MCS },
1582 { 65, IFM_IEEE80211_MCS },
1583 { 66, IFM_IEEE80211_MCS },
1584 { 67, IFM_IEEE80211_MCS },
1585 { 68, IFM_IEEE80211_MCS },
1586 { 69, IFM_IEEE80211_MCS },
1587 { 70, IFM_IEEE80211_MCS },
1588 { 71, IFM_IEEE80211_MCS },
1589 { 72, IFM_IEEE80211_MCS },
1590 { 73, IFM_IEEE80211_MCS },
1591 { 74, IFM_IEEE80211_MCS },
1592 { 75, IFM_IEEE80211_MCS },
1593 { 76, IFM_IEEE80211_MCS },
1594 };
1595 int m;
1596
1597 /*
1598 * Check 11n rates first for match as an MCS.
1599 */
1600 if (mode == IEEE80211_MODE_11NA) {
1601 if (rate & IEEE80211_RATE_MCS) {
1602 rate &= ~IEEE80211_RATE_MCS;
1603 m = findmedia(htrates, N(htrates), rate);
1604 if (m != IFM_AUTO)
1605 return m | IFM_IEEE80211_11NA;
1606 }
1607 } else if (mode == IEEE80211_MODE_11NG) {
1608 /* NB: 12 is ambiguous, it will be treated as an MCS */
1609 if (rate & IEEE80211_RATE_MCS) {
1610 rate &= ~IEEE80211_RATE_MCS;
1611 m = findmedia(htrates, N(htrates), rate);
1612 if (m != IFM_AUTO)
1613 return m | IFM_IEEE80211_11NG;
1614 }
1615 }
1616 rate &= IEEE80211_RATE_VAL;
1617 switch (mode) {
1618 case IEEE80211_MODE_11A:
1619 case IEEE80211_MODE_HALF: /* XXX good 'nuf */
1620 case IEEE80211_MODE_QUARTER:
1621 case IEEE80211_MODE_11NA:
1622 case IEEE80211_MODE_TURBO_A:
1623 case IEEE80211_MODE_STURBO_A:
1624 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11A);
1625 case IEEE80211_MODE_11B:
1626 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11B);
1627 case IEEE80211_MODE_FH:
1628 return findmedia(rates, N(rates), rate | IFM_IEEE80211_FH);
1629 case IEEE80211_MODE_AUTO:
1630 /* NB: ic may be NULL for some drivers */
1631 if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH)
1632 return findmedia(rates, N(rates),
1633 rate | IFM_IEEE80211_FH);
1634 /* NB: hack, 11g matches both 11b+11a rates */
1635 /* fall thru... */
1636 case IEEE80211_MODE_11G:
1637 case IEEE80211_MODE_11NG:
1638 case IEEE80211_MODE_TURBO_G:
1639 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11G);
1640 }
1641 return IFM_AUTO;
1642#undef N
1643}
1644
1645int
1646ieee80211_media2rate(int mword)
1647{
1648#define N(a) (sizeof(a) / sizeof(a[0]))
1649 static const int ieeerates[] = {
1650 -1, /* IFM_AUTO */
1651 0, /* IFM_MANUAL */
1652 0, /* IFM_NONE */
1653 2, /* IFM_IEEE80211_FH1 */
1654 4, /* IFM_IEEE80211_FH2 */
1655 2, /* IFM_IEEE80211_DS1 */
1656 4, /* IFM_IEEE80211_DS2 */
1657 11, /* IFM_IEEE80211_DS5 */
1658 22, /* IFM_IEEE80211_DS11 */
1659 44, /* IFM_IEEE80211_DS22 */
1660 12, /* IFM_IEEE80211_OFDM6 */
1661 18, /* IFM_IEEE80211_OFDM9 */
1662 24, /* IFM_IEEE80211_OFDM12 */
1663 36, /* IFM_IEEE80211_OFDM18 */
1664 48, /* IFM_IEEE80211_OFDM24 */
1665 72, /* IFM_IEEE80211_OFDM36 */
1666 96, /* IFM_IEEE80211_OFDM48 */
1667 108, /* IFM_IEEE80211_OFDM54 */
1668 144, /* IFM_IEEE80211_OFDM72 */
1669 0, /* IFM_IEEE80211_DS354k */
1670 0, /* IFM_IEEE80211_DS512k */
1671 6, /* IFM_IEEE80211_OFDM3 */
1672 9, /* IFM_IEEE80211_OFDM4 */
1673 54, /* IFM_IEEE80211_OFDM27 */
1674 -1, /* IFM_IEEE80211_MCS */
1675 };
1676 return IFM_SUBTYPE(mword) < N(ieeerates) ?
1677 ieeerates[IFM_SUBTYPE(mword)] : 0;
1678#undef N
1679}
1680
1681/*
1682 * The following hash function is adapted from "Hash Functions" by Bob Jenkins
1683 * ("Algorithm Alley", Dr. Dobbs Journal, September 1997).
1684 */
1685#define mix(a, b, c) \
1686do { \
1687 a -= b; a -= c; a ^= (c >> 13); \
1688 b -= c; b -= a; b ^= (a << 8); \
1689 c -= a; c -= b; c ^= (b >> 13); \
1690 a -= b; a -= c; a ^= (c >> 12); \
1691 b -= c; b -= a; b ^= (a << 16); \
1692 c -= a; c -= b; c ^= (b >> 5); \
1693 a -= b; a -= c; a ^= (c >> 3); \
1694 b -= c; b -= a; b ^= (a << 10); \
1695 c -= a; c -= b; c ^= (b >> 15); \
1696} while (/*CONSTCOND*/0)
1697
1698uint32_t
1699ieee80211_mac_hash(const struct ieee80211com *ic,
1700 const uint8_t addr[IEEE80211_ADDR_LEN])
1701{
1702 uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = ic->ic_hash_key;
1703
1704 b += addr[5] << 8;
1705 b += addr[4];
1706 a += addr[3] << 24;
1707 a += addr[2] << 16;
1708 a += addr[1] << 8;
1709 a += addr[0];
1710
1711 mix(a, b, c);
1712
1713 return c;
1714}
1715#undef mix
| 1145 const struct ieee80211_rateset *rs;
1146
1147 /* NB: skip AUTO since it has no rates */
1148 for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) {
1149 if (isclr(ic->ic_modecaps, mode))
1150 continue;
1151 if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]);
1152 rs = &ic->ic_sup_rates[mode];
1153 for (i = 0; i < rs->rs_nrates; i++) {
1154 mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode);
1155 if (mword == 0)
1156 continue;
1157 rate = ieee80211_media2rate(mword);
1158 printf("%s%d%sMbps", (i != 0 ? " " : ""),
1159 rate / 2, ((rate & 0x1) != 0 ? ".5" : ""));
1160 }
1161 printf("\n");
1162 }
1163 ieee80211_ht_announce(ic);
1164}
1165
1166void
1167ieee80211_announce_channels(struct ieee80211com *ic)
1168{
1169 const struct ieee80211_channel *c;
1170 char type;
1171 int i, cw;
1172
1173 printf("Chan Freq CW RegPwr MinPwr MaxPwr\n");
1174 for (i = 0; i < ic->ic_nchans; i++) {
1175 c = &ic->ic_channels[i];
1176 if (IEEE80211_IS_CHAN_ST(c))
1177 type = 'S';
1178 else if (IEEE80211_IS_CHAN_108A(c))
1179 type = 'T';
1180 else if (IEEE80211_IS_CHAN_108G(c))
1181 type = 'G';
1182 else if (IEEE80211_IS_CHAN_HT(c))
1183 type = 'n';
1184 else if (IEEE80211_IS_CHAN_A(c))
1185 type = 'a';
1186 else if (IEEE80211_IS_CHAN_ANYG(c))
1187 type = 'g';
1188 else if (IEEE80211_IS_CHAN_B(c))
1189 type = 'b';
1190 else
1191 type = 'f';
1192 if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c))
1193 cw = 40;
1194 else if (IEEE80211_IS_CHAN_HALF(c))
1195 cw = 10;
1196 else if (IEEE80211_IS_CHAN_QUARTER(c))
1197 cw = 5;
1198 else
1199 cw = 20;
1200 printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n"
1201 , c->ic_ieee, c->ic_freq, type
1202 , cw
1203 , IEEE80211_IS_CHAN_HT40U(c) ? '+' :
1204 IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' '
1205 , c->ic_maxregpower
1206 , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0
1207 , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0
1208 );
1209 }
1210}
1211
1212static int
1213media2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode)
1214{
1215 switch (IFM_MODE(ime->ifm_media)) {
1216 case IFM_IEEE80211_11A:
1217 *mode = IEEE80211_MODE_11A;
1218 break;
1219 case IFM_IEEE80211_11B:
1220 *mode = IEEE80211_MODE_11B;
1221 break;
1222 case IFM_IEEE80211_11G:
1223 *mode = IEEE80211_MODE_11G;
1224 break;
1225 case IFM_IEEE80211_FH:
1226 *mode = IEEE80211_MODE_FH;
1227 break;
1228 case IFM_IEEE80211_11NA:
1229 *mode = IEEE80211_MODE_11NA;
1230 break;
1231 case IFM_IEEE80211_11NG:
1232 *mode = IEEE80211_MODE_11NG;
1233 break;
1234 case IFM_AUTO:
1235 *mode = IEEE80211_MODE_AUTO;
1236 break;
1237 default:
1238 return 0;
1239 }
1240 /*
1241 * Turbo mode is an ``option''.
1242 * XXX does not apply to AUTO
1243 */
1244 if (ime->ifm_media & IFM_IEEE80211_TURBO) {
1245 if (*mode == IEEE80211_MODE_11A) {
1246 if (flags & IEEE80211_F_TURBOP)
1247 *mode = IEEE80211_MODE_TURBO_A;
1248 else
1249 *mode = IEEE80211_MODE_STURBO_A;
1250 } else if (*mode == IEEE80211_MODE_11G)
1251 *mode = IEEE80211_MODE_TURBO_G;
1252 else
1253 return 0;
1254 }
1255 /* XXX HT40 +/- */
1256 return 1;
1257}
1258
1259/*
1260 * Handle a media change request on the underlying interface.
1261 */
1262int
1263ieee80211com_media_change(struct ifnet *ifp)
1264{
1265 return EINVAL;
1266}
1267
1268/*
1269 * Handle a media change request on the vap interface.
1270 */
1271int
1272ieee80211_media_change(struct ifnet *ifp)
1273{
1274 struct ieee80211vap *vap = ifp->if_softc;
1275 struct ifmedia_entry *ime = vap->iv_media.ifm_cur;
1276 uint16_t newmode;
1277
1278 if (!media2mode(ime, vap->iv_flags, &newmode))
1279 return EINVAL;
1280 if (vap->iv_des_mode != newmode) {
1281 vap->iv_des_mode = newmode;
1282 /* XXX kick state machine if up+running */
1283 }
1284 return 0;
1285}
1286
1287/*
1288 * Common code to calculate the media status word
1289 * from the operating mode and channel state.
1290 */
1291static int
1292media_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan)
1293{
1294 int status;
1295
1296 status = IFM_IEEE80211;
1297 switch (opmode) {
1298 case IEEE80211_M_STA:
1299 break;
1300 case IEEE80211_M_IBSS:
1301 status |= IFM_IEEE80211_ADHOC;
1302 break;
1303 case IEEE80211_M_HOSTAP:
1304 status |= IFM_IEEE80211_HOSTAP;
1305 break;
1306 case IEEE80211_M_MONITOR:
1307 status |= IFM_IEEE80211_MONITOR;
1308 break;
1309 case IEEE80211_M_AHDEMO:
1310 status |= IFM_IEEE80211_ADHOC | IFM_FLAG0;
1311 break;
1312 case IEEE80211_M_WDS:
1313 status |= IFM_IEEE80211_WDS;
1314 break;
1315 case IEEE80211_M_MBSS:
1316 status |= IFM_IEEE80211_MBSS;
1317 break;
1318 }
1319 if (IEEE80211_IS_CHAN_HTA(chan)) {
1320 status |= IFM_IEEE80211_11NA;
1321 } else if (IEEE80211_IS_CHAN_HTG(chan)) {
1322 status |= IFM_IEEE80211_11NG;
1323 } else if (IEEE80211_IS_CHAN_A(chan)) {
1324 status |= IFM_IEEE80211_11A;
1325 } else if (IEEE80211_IS_CHAN_B(chan)) {
1326 status |= IFM_IEEE80211_11B;
1327 } else if (IEEE80211_IS_CHAN_ANYG(chan)) {
1328 status |= IFM_IEEE80211_11G;
1329 } else if (IEEE80211_IS_CHAN_FHSS(chan)) {
1330 status |= IFM_IEEE80211_FH;
1331 }
1332 /* XXX else complain? */
1333
1334 if (IEEE80211_IS_CHAN_TURBO(chan))
1335 status |= IFM_IEEE80211_TURBO;
1336#if 0
1337 if (IEEE80211_IS_CHAN_HT20(chan))
1338 status |= IFM_IEEE80211_HT20;
1339 if (IEEE80211_IS_CHAN_HT40(chan))
1340 status |= IFM_IEEE80211_HT40;
1341#endif
1342 return status;
1343}
1344
1345static void
1346ieee80211com_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1347{
1348 struct ieee80211com *ic = ifp->if_l2com;
1349 struct ieee80211vap *vap;
1350
1351 imr->ifm_status = IFM_AVALID;
1352 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
1353 if (vap->iv_ifp->if_flags & IFF_UP) {
1354 imr->ifm_status |= IFM_ACTIVE;
1355 break;
1356 }
1357 imr->ifm_active = media_status(ic->ic_opmode, ic->ic_curchan);
1358 if (imr->ifm_status & IFM_ACTIVE)
1359 imr->ifm_current = imr->ifm_active;
1360}
1361
1362void
1363ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1364{
1365 struct ieee80211vap *vap = ifp->if_softc;
1366 struct ieee80211com *ic = vap->iv_ic;
1367 enum ieee80211_phymode mode;
1368
1369 imr->ifm_status = IFM_AVALID;
1370 /*
1371 * NB: use the current channel's mode to lock down a xmit
1372 * rate only when running; otherwise we may have a mismatch
1373 * in which case the rate will not be convertible.
1374 */
1375 if (vap->iv_state == IEEE80211_S_RUN) {
1376 imr->ifm_status |= IFM_ACTIVE;
1377 mode = ieee80211_chan2mode(ic->ic_curchan);
1378 } else
1379 mode = IEEE80211_MODE_AUTO;
1380 imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan);
1381 /*
1382 * Calculate a current rate if possible.
1383 */
1384 if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) {
1385 /*
1386 * A fixed rate is set, report that.
1387 */
1388 imr->ifm_active |= ieee80211_rate2media(ic,
1389 vap->iv_txparms[mode].ucastrate, mode);
1390 } else if (vap->iv_opmode == IEEE80211_M_STA) {
1391 /*
1392 * In station mode report the current transmit rate.
1393 */
1394 imr->ifm_active |= ieee80211_rate2media(ic,
1395 vap->iv_bss->ni_txrate, mode);
1396 } else
1397 imr->ifm_active |= IFM_AUTO;
1398 if (imr->ifm_status & IFM_ACTIVE)
1399 imr->ifm_current = imr->ifm_active;
1400}
1401
1402/*
1403 * Set the current phy mode and recalculate the active channel
1404 * set based on the available channels for this mode. Also
1405 * select a new default/current channel if the current one is
1406 * inappropriate for this mode.
1407 */
1408int
1409ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode)
1410{
1411 /*
1412 * Adjust basic rates in 11b/11g supported rate set.
1413 * Note that if operating on a hal/quarter rate channel
1414 * this is a noop as those rates sets are different
1415 * and used instead.
1416 */
1417 if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B)
1418 ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode);
1419
1420 ic->ic_curmode = mode;
1421 ieee80211_reset_erp(ic); /* reset ERP state */
1422
1423 return 0;
1424}
1425
1426/*
1427 * Return the phy mode for with the specified channel.
1428 */
1429enum ieee80211_phymode
1430ieee80211_chan2mode(const struct ieee80211_channel *chan)
1431{
1432
1433 if (IEEE80211_IS_CHAN_HTA(chan))
1434 return IEEE80211_MODE_11NA;
1435 else if (IEEE80211_IS_CHAN_HTG(chan))
1436 return IEEE80211_MODE_11NG;
1437 else if (IEEE80211_IS_CHAN_108G(chan))
1438 return IEEE80211_MODE_TURBO_G;
1439 else if (IEEE80211_IS_CHAN_ST(chan))
1440 return IEEE80211_MODE_STURBO_A;
1441 else if (IEEE80211_IS_CHAN_TURBO(chan))
1442 return IEEE80211_MODE_TURBO_A;
1443 else if (IEEE80211_IS_CHAN_HALF(chan))
1444 return IEEE80211_MODE_HALF;
1445 else if (IEEE80211_IS_CHAN_QUARTER(chan))
1446 return IEEE80211_MODE_QUARTER;
1447 else if (IEEE80211_IS_CHAN_A(chan))
1448 return IEEE80211_MODE_11A;
1449 else if (IEEE80211_IS_CHAN_ANYG(chan))
1450 return IEEE80211_MODE_11G;
1451 else if (IEEE80211_IS_CHAN_B(chan))
1452 return IEEE80211_MODE_11B;
1453 else if (IEEE80211_IS_CHAN_FHSS(chan))
1454 return IEEE80211_MODE_FH;
1455
1456 /* NB: should not get here */
1457 printf("%s: cannot map channel to mode; freq %u flags 0x%x\n",
1458 __func__, chan->ic_freq, chan->ic_flags);
1459 return IEEE80211_MODE_11B;
1460}
1461
1462struct ratemedia {
1463 u_int match; /* rate + mode */
1464 u_int media; /* if_media rate */
1465};
1466
1467static int
1468findmedia(const struct ratemedia rates[], int n, u_int match)
1469{
1470 int i;
1471
1472 for (i = 0; i < n; i++)
1473 if (rates[i].match == match)
1474 return rates[i].media;
1475 return IFM_AUTO;
1476}
1477
1478/*
1479 * Convert IEEE80211 rate value to ifmedia subtype.
1480 * Rate is either a legacy rate in units of 0.5Mbps
1481 * or an MCS index.
1482 */
1483int
1484ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode)
1485{
1486#define N(a) (sizeof(a) / sizeof(a[0]))
1487 static const struct ratemedia rates[] = {
1488 { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 },
1489 { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 },
1490 { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 },
1491 { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 },
1492 { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 },
1493 { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 },
1494 { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 },
1495 { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 },
1496 { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 },
1497 { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 },
1498 { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 },
1499 { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 },
1500 { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 },
1501 { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 },
1502 { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 },
1503 { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 },
1504 { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 },
1505 { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 },
1506 { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 },
1507 { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 },
1508 { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 },
1509 { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 },
1510 { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 },
1511 { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 },
1512 { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 },
1513 { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 },
1514 { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 },
1515 { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 },
1516 { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 },
1517 { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 },
1518 /* NB: OFDM72 doesn't realy exist so we don't handle it */
1519 };
1520 static const struct ratemedia htrates[] = {
1521 { 0, IFM_IEEE80211_MCS },
1522 { 1, IFM_IEEE80211_MCS },
1523 { 2, IFM_IEEE80211_MCS },
1524 { 3, IFM_IEEE80211_MCS },
1525 { 4, IFM_IEEE80211_MCS },
1526 { 5, IFM_IEEE80211_MCS },
1527 { 6, IFM_IEEE80211_MCS },
1528 { 7, IFM_IEEE80211_MCS },
1529 { 8, IFM_IEEE80211_MCS },
1530 { 9, IFM_IEEE80211_MCS },
1531 { 10, IFM_IEEE80211_MCS },
1532 { 11, IFM_IEEE80211_MCS },
1533 { 12, IFM_IEEE80211_MCS },
1534 { 13, IFM_IEEE80211_MCS },
1535 { 14, IFM_IEEE80211_MCS },
1536 { 15, IFM_IEEE80211_MCS },
1537 { 16, IFM_IEEE80211_MCS },
1538 { 17, IFM_IEEE80211_MCS },
1539 { 18, IFM_IEEE80211_MCS },
1540 { 19, IFM_IEEE80211_MCS },
1541 { 20, IFM_IEEE80211_MCS },
1542 { 21, IFM_IEEE80211_MCS },
1543 { 22, IFM_IEEE80211_MCS },
1544 { 23, IFM_IEEE80211_MCS },
1545 { 24, IFM_IEEE80211_MCS },
1546 { 25, IFM_IEEE80211_MCS },
1547 { 26, IFM_IEEE80211_MCS },
1548 { 27, IFM_IEEE80211_MCS },
1549 { 28, IFM_IEEE80211_MCS },
1550 { 29, IFM_IEEE80211_MCS },
1551 { 30, IFM_IEEE80211_MCS },
1552 { 31, IFM_IEEE80211_MCS },
1553 { 32, IFM_IEEE80211_MCS },
1554 { 33, IFM_IEEE80211_MCS },
1555 { 34, IFM_IEEE80211_MCS },
1556 { 35, IFM_IEEE80211_MCS },
1557 { 36, IFM_IEEE80211_MCS },
1558 { 37, IFM_IEEE80211_MCS },
1559 { 38, IFM_IEEE80211_MCS },
1560 { 39, IFM_IEEE80211_MCS },
1561 { 40, IFM_IEEE80211_MCS },
1562 { 41, IFM_IEEE80211_MCS },
1563 { 42, IFM_IEEE80211_MCS },
1564 { 43, IFM_IEEE80211_MCS },
1565 { 44, IFM_IEEE80211_MCS },
1566 { 45, IFM_IEEE80211_MCS },
1567 { 46, IFM_IEEE80211_MCS },
1568 { 47, IFM_IEEE80211_MCS },
1569 { 48, IFM_IEEE80211_MCS },
1570 { 49, IFM_IEEE80211_MCS },
1571 { 50, IFM_IEEE80211_MCS },
1572 { 51, IFM_IEEE80211_MCS },
1573 { 52, IFM_IEEE80211_MCS },
1574 { 53, IFM_IEEE80211_MCS },
1575 { 54, IFM_IEEE80211_MCS },
1576 { 55, IFM_IEEE80211_MCS },
1577 { 56, IFM_IEEE80211_MCS },
1578 { 57, IFM_IEEE80211_MCS },
1579 { 58, IFM_IEEE80211_MCS },
1580 { 59, IFM_IEEE80211_MCS },
1581 { 60, IFM_IEEE80211_MCS },
1582 { 61, IFM_IEEE80211_MCS },
1583 { 62, IFM_IEEE80211_MCS },
1584 { 63, IFM_IEEE80211_MCS },
1585 { 64, IFM_IEEE80211_MCS },
1586 { 65, IFM_IEEE80211_MCS },
1587 { 66, IFM_IEEE80211_MCS },
1588 { 67, IFM_IEEE80211_MCS },
1589 { 68, IFM_IEEE80211_MCS },
1590 { 69, IFM_IEEE80211_MCS },
1591 { 70, IFM_IEEE80211_MCS },
1592 { 71, IFM_IEEE80211_MCS },
1593 { 72, IFM_IEEE80211_MCS },
1594 { 73, IFM_IEEE80211_MCS },
1595 { 74, IFM_IEEE80211_MCS },
1596 { 75, IFM_IEEE80211_MCS },
1597 { 76, IFM_IEEE80211_MCS },
1598 };
1599 int m;
1600
1601 /*
1602 * Check 11n rates first for match as an MCS.
1603 */
1604 if (mode == IEEE80211_MODE_11NA) {
1605 if (rate & IEEE80211_RATE_MCS) {
1606 rate &= ~IEEE80211_RATE_MCS;
1607 m = findmedia(htrates, N(htrates), rate);
1608 if (m != IFM_AUTO)
1609 return m | IFM_IEEE80211_11NA;
1610 }
1611 } else if (mode == IEEE80211_MODE_11NG) {
1612 /* NB: 12 is ambiguous, it will be treated as an MCS */
1613 if (rate & IEEE80211_RATE_MCS) {
1614 rate &= ~IEEE80211_RATE_MCS;
1615 m = findmedia(htrates, N(htrates), rate);
1616 if (m != IFM_AUTO)
1617 return m | IFM_IEEE80211_11NG;
1618 }
1619 }
1620 rate &= IEEE80211_RATE_VAL;
1621 switch (mode) {
1622 case IEEE80211_MODE_11A:
1623 case IEEE80211_MODE_HALF: /* XXX good 'nuf */
1624 case IEEE80211_MODE_QUARTER:
1625 case IEEE80211_MODE_11NA:
1626 case IEEE80211_MODE_TURBO_A:
1627 case IEEE80211_MODE_STURBO_A:
1628 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11A);
1629 case IEEE80211_MODE_11B:
1630 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11B);
1631 case IEEE80211_MODE_FH:
1632 return findmedia(rates, N(rates), rate | IFM_IEEE80211_FH);
1633 case IEEE80211_MODE_AUTO:
1634 /* NB: ic may be NULL for some drivers */
1635 if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH)
1636 return findmedia(rates, N(rates),
1637 rate | IFM_IEEE80211_FH);
1638 /* NB: hack, 11g matches both 11b+11a rates */
1639 /* fall thru... */
1640 case IEEE80211_MODE_11G:
1641 case IEEE80211_MODE_11NG:
1642 case IEEE80211_MODE_TURBO_G:
1643 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11G);
1644 }
1645 return IFM_AUTO;
1646#undef N
1647}
1648
1649int
1650ieee80211_media2rate(int mword)
1651{
1652#define N(a) (sizeof(a) / sizeof(a[0]))
1653 static const int ieeerates[] = {
1654 -1, /* IFM_AUTO */
1655 0, /* IFM_MANUAL */
1656 0, /* IFM_NONE */
1657 2, /* IFM_IEEE80211_FH1 */
1658 4, /* IFM_IEEE80211_FH2 */
1659 2, /* IFM_IEEE80211_DS1 */
1660 4, /* IFM_IEEE80211_DS2 */
1661 11, /* IFM_IEEE80211_DS5 */
1662 22, /* IFM_IEEE80211_DS11 */
1663 44, /* IFM_IEEE80211_DS22 */
1664 12, /* IFM_IEEE80211_OFDM6 */
1665 18, /* IFM_IEEE80211_OFDM9 */
1666 24, /* IFM_IEEE80211_OFDM12 */
1667 36, /* IFM_IEEE80211_OFDM18 */
1668 48, /* IFM_IEEE80211_OFDM24 */
1669 72, /* IFM_IEEE80211_OFDM36 */
1670 96, /* IFM_IEEE80211_OFDM48 */
1671 108, /* IFM_IEEE80211_OFDM54 */
1672 144, /* IFM_IEEE80211_OFDM72 */
1673 0, /* IFM_IEEE80211_DS354k */
1674 0, /* IFM_IEEE80211_DS512k */
1675 6, /* IFM_IEEE80211_OFDM3 */
1676 9, /* IFM_IEEE80211_OFDM4 */
1677 54, /* IFM_IEEE80211_OFDM27 */
1678 -1, /* IFM_IEEE80211_MCS */
1679 };
1680 return IFM_SUBTYPE(mword) < N(ieeerates) ?
1681 ieeerates[IFM_SUBTYPE(mword)] : 0;
1682#undef N
1683}
1684
1685/*
1686 * The following hash function is adapted from "Hash Functions" by Bob Jenkins
1687 * ("Algorithm Alley", Dr. Dobbs Journal, September 1997).
1688 */
1689#define mix(a, b, c) \
1690do { \
1691 a -= b; a -= c; a ^= (c >> 13); \
1692 b -= c; b -= a; b ^= (a << 8); \
1693 c -= a; c -= b; c ^= (b >> 13); \
1694 a -= b; a -= c; a ^= (c >> 12); \
1695 b -= c; b -= a; b ^= (a << 16); \
1696 c -= a; c -= b; c ^= (b >> 5); \
1697 a -= b; a -= c; a ^= (c >> 3); \
1698 b -= c; b -= a; b ^= (a << 10); \
1699 c -= a; c -= b; c ^= (b >> 15); \
1700} while (/*CONSTCOND*/0)
1701
1702uint32_t
1703ieee80211_mac_hash(const struct ieee80211com *ic,
1704 const uint8_t addr[IEEE80211_ADDR_LEN])
1705{
1706 uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = ic->ic_hash_key;
1707
1708 b += addr[5] << 8;
1709 b += addr[4];
1710 a += addr[3] << 24;
1711 a += addr[2] << 16;
1712 a += addr[1] << 8;
1713 a += addr[0];
1714
1715 mix(a, b, c);
1716
1717 return c;
1718}
1719#undef mix
|