ieee80211.c revision 1.31.2.8
1 1.31.2.8 christos /* $NetBSD: ieee80211.c,v 1.31.2.8 2005/12/11 10:29:22 christos Exp $ */ 2 1.31.2.2 skrll /*- 3 1.31.2.2 skrll * Copyright (c) 2001 Atsushi Onoe 4 1.31.2.7 skrll * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting 5 1.31.2.2 skrll * All rights reserved. 6 1.31.2.2 skrll * 7 1.31.2.2 skrll * Redistribution and use in source and binary forms, with or without 8 1.31.2.2 skrll * modification, are permitted provided that the following conditions 9 1.31.2.2 skrll * are met: 10 1.31.2.2 skrll * 1. Redistributions of source code must retain the above copyright 11 1.31.2.2 skrll * notice, this list of conditions and the following disclaimer. 12 1.31.2.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 13 1.31.2.2 skrll * notice, this list of conditions and the following disclaimer in the 14 1.31.2.2 skrll * documentation and/or other materials provided with the distribution. 15 1.31.2.2 skrll * 3. The name of the author may not be used to endorse or promote products 16 1.31.2.2 skrll * derived from this software without specific prior written permission. 17 1.31.2.2 skrll * 18 1.31.2.2 skrll * Alternatively, this software may be distributed under the terms of the 19 1.31.2.2 skrll * GNU General Public License ("GPL") version 2 as published by the Free 20 1.31.2.2 skrll * Software Foundation. 21 1.31.2.2 skrll * 22 1.31.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 1.31.2.2 skrll * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 1.31.2.2 skrll * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 1.31.2.2 skrll * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 1.31.2.2 skrll * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 1.31.2.2 skrll * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 1.31.2.2 skrll * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 1.31.2.2 skrll * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 1.31.2.2 skrll * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 1.31.2.2 skrll * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 1.31.2.2 skrll */ 33 1.31.2.2 skrll 34 1.31.2.2 skrll #include <sys/cdefs.h> 35 1.31.2.2 skrll #ifdef __FreeBSD__ 36 1.31.2.8 christos __FBSDID("$FreeBSD: src/sys/net80211/ieee80211.c,v 1.22 2005/08/10 16:22:29 sam Exp $"); 37 1.31.2.8 christos #endif 38 1.31.2.8 christos #ifdef __NetBSD__ 39 1.31.2.8 christos __KERNEL_RCSID(0, "$NetBSD: ieee80211.c,v 1.31.2.8 2005/12/11 10:29:22 christos Exp $"); 40 1.31.2.2 skrll #endif 41 1.31.2.2 skrll 42 1.31.2.2 skrll /* 43 1.31.2.2 skrll * IEEE 802.11 generic handler 44 1.31.2.2 skrll */ 45 1.31.2.2 skrll 46 1.31.2.2 skrll #include "opt_inet.h" 47 1.31.2.2 skrll #include "bpfilter.h" 48 1.31.2.2 skrll 49 1.31.2.2 skrll #include <sys/param.h> 50 1.31.2.7 skrll #include <sys/systm.h> 51 1.31.2.2 skrll #include <sys/kernel.h> 52 1.31.2.7 skrll 53 1.31.2.2 skrll #include <sys/socket.h> 54 1.31.2.2 skrll #include <sys/sockio.h> 55 1.31.2.2 skrll #include <sys/endian.h> 56 1.31.2.2 skrll #include <sys/errno.h> 57 1.31.2.2 skrll #include <sys/proc.h> 58 1.31.2.2 skrll #include <sys/sysctl.h> 59 1.31.2.2 skrll 60 1.31.2.2 skrll #include <net/if.h> 61 1.31.2.2 skrll #include <net/if_media.h> 62 1.31.2.2 skrll #include <net/if_arp.h> 63 1.31.2.2 skrll #include <net/if_ether.h> 64 1.31.2.2 skrll #include <net/if_llc.h> 65 1.31.2.2 skrll 66 1.31.2.7 skrll #include <net80211/ieee80211_netbsd.h> 67 1.31.2.2 skrll #include <net80211/ieee80211_var.h> 68 1.31.2.2 skrll #include <net80211/ieee80211_sysctl.h> 69 1.31.2.2 skrll 70 1.31.2.2 skrll #include <net/bpf.h> 71 1.31.2.2 skrll 72 1.31.2.2 skrll #ifdef INET 73 1.31.2.7 skrll #include <netinet/in.h> 74 1.31.2.2 skrll #include <net/if_ether.h> 75 1.31.2.2 skrll #endif 76 1.31.2.2 skrll 77 1.31.2.2 skrll struct ieee80211com_head ieee80211com_head = 78 1.31.2.2 skrll LIST_HEAD_INITIALIZER(ieee80211com_head); 79 1.31.2.2 skrll 80 1.31.2.7 skrll const char *ieee80211_phymode_name[] = { 81 1.31.2.2 skrll "auto", /* IEEE80211_MODE_AUTO */ 82 1.31.2.2 skrll "11a", /* IEEE80211_MODE_11A */ 83 1.31.2.2 skrll "11b", /* IEEE80211_MODE_11B */ 84 1.31.2.2 skrll "11g", /* IEEE80211_MODE_11G */ 85 1.31.2.2 skrll "FH", /* IEEE80211_MODE_FH */ 86 1.31.2.7 skrll "turboA", /* IEEE80211_MODE_TURBO_A */ 87 1.31.2.7 skrll "turboG", /* IEEE80211_MODE_TURBO_G */ 88 1.31.2.2 skrll }; 89 1.31.2.2 skrll 90 1.31.2.7 skrll /* list of all instances */ 91 1.31.2.7 skrll SLIST_HEAD(ieee80211_list, ieee80211com); 92 1.31.2.7 skrll static struct ieee80211_list ieee80211_list = 93 1.31.2.7 skrll SLIST_HEAD_INITIALIZER(ieee80211_list); 94 1.31.2.7 skrll static u_int8_t ieee80211_vapmap[32]; /* enough for 256 */ 95 1.31.2.7 skrll 96 1.31.2.7 skrll static void 97 1.31.2.7 skrll ieee80211_add_vap(struct ieee80211com *ic) 98 1.31.2.7 skrll { 99 1.31.2.7 skrll #define N(a) (sizeof(a)/sizeof(a[0])) 100 1.31.2.7 skrll int i; 101 1.31.2.7 skrll int s; 102 1.31.2.7 skrll u_int8_t b; 103 1.31.2.7 skrll 104 1.31.2.7 skrll s = splnet(); 105 1.31.2.7 skrll ic->ic_vap = 0; 106 1.31.2.7 skrll for (i = 0; i < N(ieee80211_vapmap) && ieee80211_vapmap[i] == 0xff; i++) 107 1.31.2.7 skrll ic->ic_vap += NBBY; 108 1.31.2.7 skrll if (i == N(ieee80211_vapmap)) 109 1.31.2.7 skrll panic("vap table full"); 110 1.31.2.7 skrll for (b = ieee80211_vapmap[i]; b & 1; b >>= 1) 111 1.31.2.7 skrll ic->ic_vap++; 112 1.31.2.7 skrll setbit(ieee80211_vapmap, ic->ic_vap); 113 1.31.2.7 skrll SLIST_INSERT_HEAD(&ieee80211_list, ic, ic_next); 114 1.31.2.7 skrll splx(s); 115 1.31.2.7 skrll #undef N 116 1.31.2.7 skrll } 117 1.31.2.7 skrll 118 1.31.2.7 skrll static void 119 1.31.2.7 skrll ieee80211_remove_vap(struct ieee80211com *ic) 120 1.31.2.7 skrll { 121 1.31.2.7 skrll int s; 122 1.31.2.7 skrll 123 1.31.2.7 skrll s = splnet(); 124 1.31.2.7 skrll SLIST_REMOVE(&ieee80211_list, ic, ieee80211com, ic_next); 125 1.31.2.7 skrll IASSERT(ic->ic_vap < sizeof(ieee80211_vapmap)*NBBY, 126 1.31.2.7 skrll ("invalid vap id %d", ic->ic_vap)); 127 1.31.2.7 skrll IASSERT(isset(ieee80211_vapmap, ic->ic_vap), 128 1.31.2.7 skrll ("vap id %d not allocated", ic->ic_vap)); 129 1.31.2.7 skrll clrbit(ieee80211_vapmap, ic->ic_vap); 130 1.31.2.7 skrll splx(s); 131 1.31.2.7 skrll } 132 1.31.2.7 skrll 133 1.31.2.7 skrll /* 134 1.31.2.7 skrll * Default reset method for use with the ioctl support. This 135 1.31.2.7 skrll * method is invoked after any state change in the 802.11 136 1.31.2.7 skrll * layer that should be propagated to the hardware but not 137 1.31.2.7 skrll * require re-initialization of the 802.11 state machine (e.g 138 1.31.2.7 skrll * rescanning for an ap). We always return ENETRESET which 139 1.31.2.7 skrll * should cause the driver to re-initialize the device. Drivers 140 1.31.2.7 skrll * can override this method to implement more optimized support. 141 1.31.2.7 skrll */ 142 1.31.2.7 skrll static int 143 1.31.2.7 skrll ieee80211_default_reset(struct ifnet *ifp) 144 1.31.2.7 skrll { 145 1.31.2.7 skrll return ENETRESET; 146 1.31.2.7 skrll } 147 1.31.2.7 skrll 148 1.31.2.2 skrll void 149 1.31.2.7 skrll ieee80211_ifattach(struct ieee80211com *ic) 150 1.31.2.2 skrll { 151 1.31.2.7 skrll struct ifnet *ifp = ic->ic_ifp; 152 1.31.2.2 skrll struct ieee80211_channel *c; 153 1.31.2.2 skrll int i; 154 1.31.2.2 skrll 155 1.31.2.8 christos #ifdef __NetBSD__ 156 1.31.2.8 christos ieee80211_init(); 157 1.31.2.8 christos #endif /* __NetBSD__ */ 158 1.31.2.8 christos 159 1.31.2.2 skrll ether_ifattach(ifp, ic->ic_myaddr); 160 1.31.2.2 skrll #if NBPFILTER > 0 161 1.31.2.2 skrll bpfattach2(ifp, DLT_IEEE802_11, 162 1.31.2.2 skrll sizeof(struct ieee80211_frame_addr4), &ic->ic_rawbpf); 163 1.31.2.2 skrll #endif 164 1.31.2.7 skrll 165 1.31.2.7 skrll ieee80211_crypto_attach(ic); 166 1.31.2.2 skrll 167 1.31.2.2 skrll /* 168 1.31.2.2 skrll * Fill in 802.11 available channel set, mark 169 1.31.2.2 skrll * all available channels as active, and pick 170 1.31.2.2 skrll * a default channel if not already specified. 171 1.31.2.2 skrll */ 172 1.31.2.2 skrll memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail)); 173 1.31.2.2 skrll ic->ic_modecaps |= 1<<IEEE80211_MODE_AUTO; 174 1.31.2.2 skrll for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 175 1.31.2.2 skrll c = &ic->ic_channels[i]; 176 1.31.2.2 skrll if (c->ic_flags) { 177 1.31.2.2 skrll /* 178 1.31.2.2 skrll * Verify driver passed us valid data. 179 1.31.2.2 skrll */ 180 1.31.2.2 skrll if (i != ieee80211_chan2ieee(ic, c)) { 181 1.31.2.2 skrll if_printf(ifp, "bad channel ignored; " 182 1.31.2.2 skrll "freq %u flags %x number %u\n", 183 1.31.2.2 skrll c->ic_freq, c->ic_flags, i); 184 1.31.2.2 skrll c->ic_flags = 0; /* NB: remove */ 185 1.31.2.2 skrll continue; 186 1.31.2.2 skrll } 187 1.31.2.2 skrll setbit(ic->ic_chan_avail, i); 188 1.31.2.2 skrll /* 189 1.31.2.2 skrll * Identify mode capabilities. 190 1.31.2.2 skrll */ 191 1.31.2.2 skrll if (IEEE80211_IS_CHAN_A(c)) 192 1.31.2.2 skrll ic->ic_modecaps |= 1<<IEEE80211_MODE_11A; 193 1.31.2.2 skrll if (IEEE80211_IS_CHAN_B(c)) 194 1.31.2.2 skrll ic->ic_modecaps |= 1<<IEEE80211_MODE_11B; 195 1.31.2.2 skrll if (IEEE80211_IS_CHAN_PUREG(c)) 196 1.31.2.2 skrll ic->ic_modecaps |= 1<<IEEE80211_MODE_11G; 197 1.31.2.2 skrll if (IEEE80211_IS_CHAN_FHSS(c)) 198 1.31.2.2 skrll ic->ic_modecaps |= 1<<IEEE80211_MODE_FH; 199 1.31.2.2 skrll if (IEEE80211_IS_CHAN_T(c)) 200 1.31.2.7 skrll ic->ic_modecaps |= 1<<IEEE80211_MODE_TURBO_A; 201 1.31.2.7 skrll if (IEEE80211_IS_CHAN_108G(c)) 202 1.31.2.7 skrll ic->ic_modecaps |= 1<<IEEE80211_MODE_TURBO_G; 203 1.31.2.8 christos if (ic->ic_curchan == NULL) { 204 1.31.2.8 christos /* arbitrarily pick the first channel */ 205 1.31.2.8 christos ic->ic_curchan = &ic->ic_channels[i]; 206 1.31.2.8 christos } 207 1.31.2.2 skrll } 208 1.31.2.2 skrll } 209 1.31.2.2 skrll /* validate ic->ic_curmode */ 210 1.31.2.2 skrll if ((ic->ic_modecaps & (1<<ic->ic_curmode)) == 0) 211 1.31.2.2 skrll ic->ic_curmode = IEEE80211_MODE_AUTO; 212 1.31.2.2 skrll ic->ic_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */ 213 1.31.2.7 skrll #if 0 214 1.31.2.7 skrll /* 215 1.31.2.7 skrll * Enable WME by default if we're capable. 216 1.31.2.7 skrll */ 217 1.31.2.7 skrll if (ic->ic_caps & IEEE80211_C_WME) 218 1.31.2.7 skrll ic->ic_flags |= IEEE80211_F_WME; 219 1.31.2.7 skrll #endif 220 1.31.2.2 skrll (void) ieee80211_setmode(ic, ic->ic_curmode); 221 1.31.2.2 skrll 222 1.31.2.8 christos if (ic->ic_bintval == 0) 223 1.31.2.8 christos ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT; 224 1.31.2.8 christos ic->ic_bmisstimeout = 7*ic->ic_bintval; /* default 7 beacons */ 225 1.31.2.7 skrll ic->ic_dtim_period = IEEE80211_DTIM_DEFAULT; 226 1.31.2.7 skrll IEEE80211_BEACON_LOCK_INIT(ic, "beacon"); 227 1.31.2.7 skrll 228 1.31.2.8 christos if (ic->ic_lintval == 0) 229 1.31.2.8 christos ic->ic_lintval = ic->ic_bintval; 230 1.31.2.7 skrll ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX; 231 1.31.2.2 skrll 232 1.31.2.2 skrll LIST_INSERT_HEAD(&ieee80211com_head, ic, ic_list); 233 1.31.2.2 skrll ieee80211_node_attach(ic); 234 1.31.2.7 skrll ieee80211_proto_attach(ic); 235 1.31.2.7 skrll 236 1.31.2.7 skrll ieee80211_add_vap(ic); 237 1.31.2.7 skrll 238 1.31.2.7 skrll ieee80211_sysctl_attach(ic); /* NB: requires ic_vap */ 239 1.31.2.7 skrll 240 1.31.2.7 skrll /* 241 1.31.2.7 skrll * Install a default reset method for the ioctl support. 242 1.31.2.7 skrll * The driver is expected to fill this in before calling us. 243 1.31.2.7 skrll */ 244 1.31.2.7 skrll if (ic->ic_reset == NULL) 245 1.31.2.7 skrll ic->ic_reset = ieee80211_default_reset; 246 1.31.2.2 skrll } 247 1.31.2.2 skrll 248 1.31.2.2 skrll void 249 1.31.2.7 skrll ieee80211_ifdetach(struct ieee80211com *ic) 250 1.31.2.2 skrll { 251 1.31.2.7 skrll struct ifnet *ifp = ic->ic_ifp; 252 1.31.2.7 skrll 253 1.31.2.7 skrll ieee80211_remove_vap(ic); 254 1.31.2.2 skrll 255 1.31.2.7 skrll ieee80211_sysctl_detach(ic); 256 1.31.2.7 skrll ieee80211_proto_detach(ic); 257 1.31.2.7 skrll ieee80211_crypto_detach(ic); 258 1.31.2.2 skrll ieee80211_node_detach(ic); 259 1.31.2.2 skrll LIST_REMOVE(ic, ic_list); 260 1.31.2.7 skrll ifmedia_delete_instance(&ic->ic_media, IFM_INST_ANY); 261 1.31.2.7 skrll 262 1.31.2.7 skrll IEEE80211_BEACON_LOCK_DESTROY(ic); 263 1.31.2.7 skrll 264 1.31.2.2 skrll #if NBPFILTER > 0 265 1.31.2.2 skrll bpfdetach(ifp); 266 1.31.2.2 skrll #endif 267 1.31.2.2 skrll ether_ifdetach(ifp); 268 1.31.2.2 skrll } 269 1.31.2.2 skrll 270 1.31.2.2 skrll /* 271 1.31.2.2 skrll * Convert MHz frequency to IEEE channel number. 272 1.31.2.2 skrll */ 273 1.31.2.2 skrll u_int 274 1.31.2.2 skrll ieee80211_mhz2ieee(u_int freq, u_int flags) 275 1.31.2.2 skrll { 276 1.31.2.2 skrll if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 277 1.31.2.2 skrll if (freq == 2484) 278 1.31.2.2 skrll return 14; 279 1.31.2.2 skrll if (freq < 2484) 280 1.31.2.2 skrll return (freq - 2407) / 5; 281 1.31.2.2 skrll else 282 1.31.2.2 skrll return 15 + ((freq - 2512) / 20); 283 1.31.2.2 skrll } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */ 284 1.31.2.2 skrll return (freq - 5000) / 5; 285 1.31.2.2 skrll } else { /* either, guess */ 286 1.31.2.2 skrll if (freq == 2484) 287 1.31.2.2 skrll return 14; 288 1.31.2.2 skrll if (freq < 2484) 289 1.31.2.2 skrll return (freq - 2407) / 5; 290 1.31.2.2 skrll if (freq < 5000) 291 1.31.2.2 skrll return 15 + ((freq - 2512) / 20); 292 1.31.2.2 skrll return (freq - 5000) / 5; 293 1.31.2.2 skrll } 294 1.31.2.2 skrll } 295 1.31.2.2 skrll 296 1.31.2.2 skrll /* 297 1.31.2.2 skrll * Convert channel to IEEE channel number. 298 1.31.2.2 skrll */ 299 1.31.2.2 skrll u_int 300 1.31.2.2 skrll ieee80211_chan2ieee(struct ieee80211com *ic, struct ieee80211_channel *c) 301 1.31.2.2 skrll { 302 1.31.2.2 skrll if (ic->ic_channels <= c && c <= &ic->ic_channels[IEEE80211_CHAN_MAX]) 303 1.31.2.2 skrll return c - ic->ic_channels; 304 1.31.2.2 skrll else if (c == IEEE80211_CHAN_ANYC) 305 1.31.2.2 skrll return IEEE80211_CHAN_ANY; 306 1.31.2.2 skrll else if (c != NULL) { 307 1.31.2.7 skrll if_printf(ic->ic_ifp, "invalid channel freq %u flags %x\n", 308 1.31.2.2 skrll c->ic_freq, c->ic_flags); 309 1.31.2.2 skrll return 0; /* XXX */ 310 1.31.2.2 skrll } else { 311 1.31.2.7 skrll if_printf(ic->ic_ifp, "invalid channel (NULL)\n"); 312 1.31.2.2 skrll return 0; /* XXX */ 313 1.31.2.2 skrll } 314 1.31.2.2 skrll } 315 1.31.2.2 skrll 316 1.31.2.2 skrll /* 317 1.31.2.2 skrll * Convert IEEE channel number to MHz frequency. 318 1.31.2.2 skrll */ 319 1.31.2.2 skrll u_int 320 1.31.2.2 skrll ieee80211_ieee2mhz(u_int chan, u_int flags) 321 1.31.2.2 skrll { 322 1.31.2.2 skrll if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 323 1.31.2.2 skrll if (chan == 14) 324 1.31.2.2 skrll return 2484; 325 1.31.2.2 skrll if (chan < 14) 326 1.31.2.2 skrll return 2407 + chan*5; 327 1.31.2.2 skrll else 328 1.31.2.2 skrll return 2512 + ((chan-15)*20); 329 1.31.2.2 skrll } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */ 330 1.31.2.2 skrll return 5000 + (chan*5); 331 1.31.2.2 skrll } else { /* either, guess */ 332 1.31.2.2 skrll if (chan == 14) 333 1.31.2.2 skrll return 2484; 334 1.31.2.2 skrll if (chan < 14) /* 0-13 */ 335 1.31.2.2 skrll return 2407 + chan*5; 336 1.31.2.2 skrll if (chan < 27) /* 15-26 */ 337 1.31.2.2 skrll return 2512 + ((chan-15)*20); 338 1.31.2.2 skrll return 5000 + (chan*5); 339 1.31.2.2 skrll } 340 1.31.2.2 skrll } 341 1.31.2.2 skrll 342 1.31.2.2 skrll /* 343 1.31.2.2 skrll * Setup the media data structures according to the channel and 344 1.31.2.2 skrll * rate tables. This must be called by the driver after 345 1.31.2.2 skrll * ieee80211_attach and before most anything else. 346 1.31.2.2 skrll */ 347 1.31.2.2 skrll void 348 1.31.2.7 skrll ieee80211_media_init(struct ieee80211com *ic, 349 1.31.2.2 skrll ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 350 1.31.2.2 skrll { 351 1.31.2.2 skrll #define ADD(_ic, _s, _o) \ 352 1.31.2.2 skrll ifmedia_add(&(_ic)->ic_media, \ 353 1.31.2.2 skrll IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL) 354 1.31.2.7 skrll struct ifnet *ifp = ic->ic_ifp; 355 1.31.2.2 skrll struct ifmediareq imr; 356 1.31.2.2 skrll int i, j, mode, rate, maxrate, mword, mopt, r; 357 1.31.2.2 skrll struct ieee80211_rateset *rs; 358 1.31.2.2 skrll struct ieee80211_rateset allrates; 359 1.31.2.2 skrll 360 1.31.2.2 skrll /* 361 1.31.2.2 skrll * Do late attach work that must wait for any subclass 362 1.31.2.2 skrll * (i.e. driver) work such as overriding methods. 363 1.31.2.2 skrll */ 364 1.31.2.2 skrll ieee80211_node_lateattach(ic); 365 1.31.2.2 skrll 366 1.31.2.7 skrll #ifdef IEEE80211_NO_HOSTAP 367 1.31.2.7 skrll ic->ic_caps &= ~IEEE80211_C_HOSTAP; 368 1.31.2.7 skrll #endif /* IEEE80211_NO_HOSTAP */ 369 1.31.2.7 skrll 370 1.31.2.2 skrll /* 371 1.31.2.2 skrll * Fill in media characteristics. 372 1.31.2.2 skrll */ 373 1.31.2.2 skrll ifmedia_init(&ic->ic_media, 0, media_change, media_stat); 374 1.31.2.2 skrll maxrate = 0; 375 1.31.2.2 skrll memset(&allrates, 0, sizeof(allrates)); 376 1.31.2.2 skrll for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_MAX; mode++) { 377 1.31.2.7 skrll static const u_int mopts[] = { 378 1.31.2.2 skrll IFM_AUTO, 379 1.31.2.2 skrll IFM_IEEE80211_11A, 380 1.31.2.2 skrll IFM_IEEE80211_11B, 381 1.31.2.2 skrll IFM_IEEE80211_11G, 382 1.31.2.2 skrll IFM_IEEE80211_FH, 383 1.31.2.2 skrll IFM_IEEE80211_11A | IFM_IEEE80211_TURBO, 384 1.31.2.7 skrll IFM_IEEE80211_11G | IFM_IEEE80211_TURBO, 385 1.31.2.2 skrll }; 386 1.31.2.2 skrll if ((ic->ic_modecaps & (1<<mode)) == 0) 387 1.31.2.2 skrll continue; 388 1.31.2.2 skrll mopt = mopts[mode]; 389 1.31.2.2 skrll ADD(ic, IFM_AUTO, mopt); /* e.g. 11a auto */ 390 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_IBSS) 391 1.31.2.2 skrll ADD(ic, IFM_AUTO, mopt | IFM_IEEE80211_ADHOC); 392 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_HOSTAP) 393 1.31.2.2 skrll ADD(ic, IFM_AUTO, mopt | IFM_IEEE80211_HOSTAP); 394 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_AHDEMO) 395 1.31.2.2 skrll ADD(ic, IFM_AUTO, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0); 396 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_MONITOR) 397 1.31.2.2 skrll ADD(ic, IFM_AUTO, mopt | IFM_IEEE80211_MONITOR); 398 1.31.2.2 skrll if (mode == IEEE80211_MODE_AUTO) 399 1.31.2.2 skrll continue; 400 1.31.2.2 skrll rs = &ic->ic_sup_rates[mode]; 401 1.31.2.2 skrll for (i = 0; i < rs->rs_nrates; i++) { 402 1.31.2.2 skrll rate = rs->rs_rates[i]; 403 1.31.2.2 skrll mword = ieee80211_rate2media(ic, rate, mode); 404 1.31.2.2 skrll if (mword == 0) 405 1.31.2.2 skrll continue; 406 1.31.2.2 skrll ADD(ic, mword, mopt); 407 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_IBSS) 408 1.31.2.2 skrll ADD(ic, mword, mopt | IFM_IEEE80211_ADHOC); 409 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_HOSTAP) 410 1.31.2.2 skrll ADD(ic, mword, mopt | IFM_IEEE80211_HOSTAP); 411 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_AHDEMO) 412 1.31.2.2 skrll ADD(ic, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0); 413 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_MONITOR) 414 1.31.2.2 skrll ADD(ic, mword, mopt | IFM_IEEE80211_MONITOR); 415 1.31.2.2 skrll /* 416 1.31.2.2 skrll * Add rate to the collection of all rates. 417 1.31.2.2 skrll */ 418 1.31.2.2 skrll r = rate & IEEE80211_RATE_VAL; 419 1.31.2.2 skrll for (j = 0; j < allrates.rs_nrates; j++) 420 1.31.2.2 skrll if (allrates.rs_rates[j] == r) 421 1.31.2.2 skrll break; 422 1.31.2.2 skrll if (j == allrates.rs_nrates) { 423 1.31.2.2 skrll /* unique, add to the set */ 424 1.31.2.2 skrll allrates.rs_rates[j] = r; 425 1.31.2.2 skrll allrates.rs_nrates++; 426 1.31.2.2 skrll } 427 1.31.2.2 skrll rate = (rate & IEEE80211_RATE_VAL) / 2; 428 1.31.2.2 skrll if (rate > maxrate) 429 1.31.2.2 skrll maxrate = rate; 430 1.31.2.2 skrll } 431 1.31.2.2 skrll } 432 1.31.2.2 skrll for (i = 0; i < allrates.rs_nrates; i++) { 433 1.31.2.2 skrll mword = ieee80211_rate2media(ic, allrates.rs_rates[i], 434 1.31.2.2 skrll IEEE80211_MODE_AUTO); 435 1.31.2.2 skrll if (mword == 0) 436 1.31.2.2 skrll continue; 437 1.31.2.2 skrll mword = IFM_SUBTYPE(mword); /* remove media options */ 438 1.31.2.2 skrll ADD(ic, mword, 0); 439 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_IBSS) 440 1.31.2.2 skrll ADD(ic, mword, IFM_IEEE80211_ADHOC); 441 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_HOSTAP) 442 1.31.2.2 skrll ADD(ic, mword, IFM_IEEE80211_HOSTAP); 443 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_AHDEMO) 444 1.31.2.2 skrll ADD(ic, mword, IFM_IEEE80211_ADHOC | IFM_FLAG0); 445 1.31.2.2 skrll if (ic->ic_caps & IEEE80211_C_MONITOR) 446 1.31.2.2 skrll ADD(ic, mword, IFM_IEEE80211_MONITOR); 447 1.31.2.2 skrll } 448 1.31.2.2 skrll ieee80211_media_status(ifp, &imr); 449 1.31.2.2 skrll ifmedia_set(&ic->ic_media, imr.ifm_active); 450 1.31.2.7 skrll 451 1.31.2.2 skrll if (maxrate) 452 1.31.2.2 skrll ifp->if_baudrate = IF_Mbps(maxrate); 453 1.31.2.2 skrll #undef ADD 454 1.31.2.2 skrll } 455 1.31.2.2 skrll 456 1.31.2.7 skrll void 457 1.31.2.7 skrll ieee80211_announce(struct ieee80211com *ic) 458 1.31.2.7 skrll { 459 1.31.2.7 skrll struct ifnet *ifp = ic->ic_ifp; 460 1.31.2.7 skrll int i, mode, rate, mword; 461 1.31.2.7 skrll struct ieee80211_rateset *rs; 462 1.31.2.7 skrll 463 1.31.2.7 skrll for (mode = IEEE80211_MODE_11A; mode < IEEE80211_MODE_MAX; mode++) { 464 1.31.2.7 skrll if ((ic->ic_modecaps & (1<<mode)) == 0) 465 1.31.2.7 skrll continue; 466 1.31.2.7 skrll if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]); 467 1.31.2.7 skrll rs = &ic->ic_sup_rates[mode]; 468 1.31.2.7 skrll for (i = 0; i < rs->rs_nrates; i++) { 469 1.31.2.7 skrll rate = rs->rs_rates[i]; 470 1.31.2.7 skrll mword = ieee80211_rate2media(ic, rate, mode); 471 1.31.2.7 skrll if (mword == 0) 472 1.31.2.7 skrll continue; 473 1.31.2.7 skrll printf("%s%d%sMbps", (i != 0 ? " " : ""), 474 1.31.2.7 skrll (rate & IEEE80211_RATE_VAL) / 2, 475 1.31.2.7 skrll ((rate & 0x1) != 0 ? ".5" : "")); 476 1.31.2.7 skrll } 477 1.31.2.7 skrll printf("\n"); 478 1.31.2.7 skrll } 479 1.31.2.7 skrll } 480 1.31.2.7 skrll 481 1.31.2.2 skrll static int 482 1.31.2.2 skrll findrate(struct ieee80211com *ic, enum ieee80211_phymode mode, int rate) 483 1.31.2.2 skrll { 484 1.31.2.2 skrll #define IEEERATE(_ic,_m,_i) \ 485 1.31.2.2 skrll ((_ic)->ic_sup_rates[_m].rs_rates[_i] & IEEE80211_RATE_VAL) 486 1.31.2.2 skrll int i, nrates = ic->ic_sup_rates[mode].rs_nrates; 487 1.31.2.2 skrll for (i = 0; i < nrates; i++) 488 1.31.2.2 skrll if (IEEERATE(ic, mode, i) == rate) 489 1.31.2.2 skrll return i; 490 1.31.2.2 skrll return -1; 491 1.31.2.2 skrll #undef IEEERATE 492 1.31.2.2 skrll } 493 1.31.2.2 skrll 494 1.31.2.2 skrll /* 495 1.31.2.7 skrll * Find an instance by it's mac address. 496 1.31.2.7 skrll */ 497 1.31.2.7 skrll struct ieee80211com * 498 1.31.2.7 skrll ieee80211_find_vap(const u_int8_t mac[IEEE80211_ADDR_LEN]) 499 1.31.2.7 skrll { 500 1.31.2.7 skrll int s; 501 1.31.2.7 skrll struct ieee80211com *ic; 502 1.31.2.7 skrll 503 1.31.2.7 skrll s = splnet(); 504 1.31.2.7 skrll SLIST_FOREACH(ic, &ieee80211_list, ic_next) 505 1.31.2.7 skrll if (IEEE80211_ADDR_EQ(mac, ic->ic_myaddr)) 506 1.31.2.7 skrll break; 507 1.31.2.7 skrll splx(s); 508 1.31.2.7 skrll return ic; 509 1.31.2.7 skrll } 510 1.31.2.7 skrll 511 1.31.2.7 skrll static struct ieee80211com * 512 1.31.2.7 skrll ieee80211_find_instance(struct ifnet *ifp) 513 1.31.2.7 skrll { 514 1.31.2.7 skrll int s; 515 1.31.2.7 skrll struct ieee80211com *ic; 516 1.31.2.7 skrll 517 1.31.2.7 skrll s = splnet(); 518 1.31.2.7 skrll /* XXX not right for multiple instances but works for now */ 519 1.31.2.7 skrll SLIST_FOREACH(ic, &ieee80211_list, ic_next) 520 1.31.2.7 skrll if (ic->ic_ifp == ifp) 521 1.31.2.7 skrll break; 522 1.31.2.7 skrll splx(s); 523 1.31.2.7 skrll return ic; 524 1.31.2.7 skrll } 525 1.31.2.7 skrll 526 1.31.2.7 skrll /* 527 1.31.2.2 skrll * Handle a media change request. 528 1.31.2.2 skrll */ 529 1.31.2.2 skrll int 530 1.31.2.2 skrll ieee80211_media_change(struct ifnet *ifp) 531 1.31.2.2 skrll { 532 1.31.2.7 skrll struct ieee80211com *ic; 533 1.31.2.2 skrll struct ifmedia_entry *ime; 534 1.31.2.2 skrll enum ieee80211_opmode newopmode; 535 1.31.2.2 skrll enum ieee80211_phymode newphymode; 536 1.31.2.2 skrll int i, j, newrate, error = 0; 537 1.31.2.2 skrll 538 1.31.2.7 skrll ic = ieee80211_find_instance(ifp); 539 1.31.2.7 skrll if (!ic) { 540 1.31.2.7 skrll if_printf(ifp, "%s: no 802.11 instance!\n", __func__); 541 1.31.2.7 skrll return EINVAL; 542 1.31.2.7 skrll } 543 1.31.2.2 skrll ime = ic->ic_media.ifm_cur; 544 1.31.2.2 skrll /* 545 1.31.2.2 skrll * First, identify the phy mode. 546 1.31.2.2 skrll */ 547 1.31.2.2 skrll switch (IFM_MODE(ime->ifm_media)) { 548 1.31.2.2 skrll case IFM_IEEE80211_11A: 549 1.31.2.2 skrll newphymode = IEEE80211_MODE_11A; 550 1.31.2.2 skrll break; 551 1.31.2.2 skrll case IFM_IEEE80211_11B: 552 1.31.2.2 skrll newphymode = IEEE80211_MODE_11B; 553 1.31.2.2 skrll break; 554 1.31.2.2 skrll case IFM_IEEE80211_11G: 555 1.31.2.2 skrll newphymode = IEEE80211_MODE_11G; 556 1.31.2.2 skrll break; 557 1.31.2.2 skrll case IFM_IEEE80211_FH: 558 1.31.2.2 skrll newphymode = IEEE80211_MODE_FH; 559 1.31.2.2 skrll break; 560 1.31.2.2 skrll case IFM_AUTO: 561 1.31.2.2 skrll newphymode = IEEE80211_MODE_AUTO; 562 1.31.2.2 skrll break; 563 1.31.2.2 skrll default: 564 1.31.2.2 skrll return EINVAL; 565 1.31.2.2 skrll } 566 1.31.2.2 skrll /* 567 1.31.2.7 skrll * Turbo mode is an ``option''. 568 1.31.2.7 skrll * XXX does not apply to AUTO 569 1.31.2.2 skrll */ 570 1.31.2.2 skrll if (ime->ifm_media & IFM_IEEE80211_TURBO) { 571 1.31.2.7 skrll if (newphymode == IEEE80211_MODE_11A) 572 1.31.2.7 skrll newphymode = IEEE80211_MODE_TURBO_A; 573 1.31.2.7 skrll else if (newphymode == IEEE80211_MODE_11G) 574 1.31.2.7 skrll newphymode = IEEE80211_MODE_TURBO_G; 575 1.31.2.7 skrll else 576 1.31.2.2 skrll return EINVAL; 577 1.31.2.2 skrll } 578 1.31.2.2 skrll /* 579 1.31.2.2 skrll * Validate requested mode is available. 580 1.31.2.2 skrll */ 581 1.31.2.2 skrll if ((ic->ic_modecaps & (1<<newphymode)) == 0) 582 1.31.2.2 skrll return EINVAL; 583 1.31.2.2 skrll 584 1.31.2.2 skrll /* 585 1.31.2.2 skrll * Next, the fixed/variable rate. 586 1.31.2.2 skrll */ 587 1.31.2.2 skrll i = -1; 588 1.31.2.2 skrll if (IFM_SUBTYPE(ime->ifm_media) != IFM_AUTO) { 589 1.31.2.2 skrll /* 590 1.31.2.2 skrll * Convert media subtype to rate. 591 1.31.2.2 skrll */ 592 1.31.2.2 skrll newrate = ieee80211_media2rate(ime->ifm_media); 593 1.31.2.2 skrll if (newrate == 0) 594 1.31.2.2 skrll return EINVAL; 595 1.31.2.2 skrll /* 596 1.31.2.2 skrll * Check the rate table for the specified/current phy. 597 1.31.2.2 skrll */ 598 1.31.2.2 skrll if (newphymode == IEEE80211_MODE_AUTO) { 599 1.31.2.2 skrll /* 600 1.31.2.2 skrll * In autoselect mode search for the rate. 601 1.31.2.2 skrll */ 602 1.31.2.2 skrll for (j = IEEE80211_MODE_11A; 603 1.31.2.2 skrll j < IEEE80211_MODE_MAX; j++) { 604 1.31.2.2 skrll if ((ic->ic_modecaps & (1<<j)) == 0) 605 1.31.2.2 skrll continue; 606 1.31.2.2 skrll i = findrate(ic, j, newrate); 607 1.31.2.2 skrll if (i != -1) { 608 1.31.2.2 skrll /* lock mode too */ 609 1.31.2.2 skrll newphymode = j; 610 1.31.2.2 skrll break; 611 1.31.2.2 skrll } 612 1.31.2.2 skrll } 613 1.31.2.2 skrll } else { 614 1.31.2.2 skrll i = findrate(ic, newphymode, newrate); 615 1.31.2.2 skrll } 616 1.31.2.2 skrll if (i == -1) /* mode/rate mismatch */ 617 1.31.2.2 skrll return EINVAL; 618 1.31.2.2 skrll } 619 1.31.2.2 skrll /* NB: defer rate setting to later */ 620 1.31.2.2 skrll 621 1.31.2.2 skrll /* 622 1.31.2.2 skrll * Deduce new operating mode but don't install it just yet. 623 1.31.2.2 skrll */ 624 1.31.2.2 skrll if ((ime->ifm_media & (IFM_IEEE80211_ADHOC|IFM_FLAG0)) == 625 1.31.2.2 skrll (IFM_IEEE80211_ADHOC|IFM_FLAG0)) 626 1.31.2.2 skrll newopmode = IEEE80211_M_AHDEMO; 627 1.31.2.2 skrll else if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 628 1.31.2.2 skrll newopmode = IEEE80211_M_HOSTAP; 629 1.31.2.2 skrll else if (ime->ifm_media & IFM_IEEE80211_ADHOC) 630 1.31.2.2 skrll newopmode = IEEE80211_M_IBSS; 631 1.31.2.2 skrll else if (ime->ifm_media & IFM_IEEE80211_MONITOR) 632 1.31.2.2 skrll newopmode = IEEE80211_M_MONITOR; 633 1.31.2.2 skrll else 634 1.31.2.2 skrll newopmode = IEEE80211_M_STA; 635 1.31.2.2 skrll 636 1.31.2.7 skrll #ifndef IEEE80211_NO_HOSTAP 637 1.31.2.2 skrll /* 638 1.31.2.2 skrll * Autoselect doesn't make sense when operating as an AP. 639 1.31.2.2 skrll * If no phy mode has been selected, pick one and lock it 640 1.31.2.2 skrll * down so rate tables can be used in forming beacon frames 641 1.31.2.2 skrll * and the like. 642 1.31.2.2 skrll */ 643 1.31.2.2 skrll if (newopmode == IEEE80211_M_HOSTAP && 644 1.31.2.2 skrll newphymode == IEEE80211_MODE_AUTO) { 645 1.31.2.2 skrll for (j = IEEE80211_MODE_11A; j < IEEE80211_MODE_MAX; j++) 646 1.31.2.2 skrll if (ic->ic_modecaps & (1<<j)) { 647 1.31.2.2 skrll newphymode = j; 648 1.31.2.2 skrll break; 649 1.31.2.2 skrll } 650 1.31.2.2 skrll } 651 1.31.2.7 skrll #endif /* !IEEE80211_NO_HOSTAP */ 652 1.31.2.2 skrll 653 1.31.2.2 skrll /* 654 1.31.2.2 skrll * Handle phy mode change. 655 1.31.2.2 skrll */ 656 1.31.2.2 skrll if (ic->ic_curmode != newphymode) { /* change phy mode */ 657 1.31.2.2 skrll error = ieee80211_setmode(ic, newphymode); 658 1.31.2.2 skrll if (error != 0) 659 1.31.2.2 skrll return error; 660 1.31.2.2 skrll error = ENETRESET; 661 1.31.2.2 skrll } 662 1.31.2.2 skrll 663 1.31.2.2 skrll /* 664 1.31.2.2 skrll * Committed to changes, install the rate setting. 665 1.31.2.2 skrll */ 666 1.31.2.2 skrll if (ic->ic_fixed_rate != i) { 667 1.31.2.2 skrll ic->ic_fixed_rate = i; /* set fixed tx rate */ 668 1.31.2.2 skrll error = ENETRESET; 669 1.31.2.2 skrll } 670 1.31.2.2 skrll 671 1.31.2.2 skrll /* 672 1.31.2.2 skrll * Handle operating mode change. 673 1.31.2.2 skrll */ 674 1.31.2.2 skrll if (ic->ic_opmode != newopmode) { 675 1.31.2.2 skrll ic->ic_opmode = newopmode; 676 1.31.2.2 skrll switch (newopmode) { 677 1.31.2.2 skrll case IEEE80211_M_AHDEMO: 678 1.31.2.2 skrll case IEEE80211_M_HOSTAP: 679 1.31.2.2 skrll case IEEE80211_M_STA: 680 1.31.2.2 skrll case IEEE80211_M_MONITOR: 681 1.31.2.2 skrll ic->ic_flags &= ~IEEE80211_F_IBSSON; 682 1.31.2.2 skrll break; 683 1.31.2.2 skrll case IEEE80211_M_IBSS: 684 1.31.2.2 skrll ic->ic_flags |= IEEE80211_F_IBSSON; 685 1.31.2.2 skrll break; 686 1.31.2.2 skrll } 687 1.31.2.7 skrll /* 688 1.31.2.7 skrll * Yech, slot time may change depending on the 689 1.31.2.7 skrll * operating mode so reset it to be sure everything 690 1.31.2.7 skrll * is setup appropriately. 691 1.31.2.7 skrll */ 692 1.31.2.7 skrll ieee80211_reset_erp(ic); 693 1.31.2.7 skrll ieee80211_wme_initparams(ic); /* after opmode change */ 694 1.31.2.2 skrll error = ENETRESET; 695 1.31.2.2 skrll } 696 1.31.2.2 skrll #ifdef notdef 697 1.31.2.2 skrll if (error == 0) 698 1.31.2.2 skrll ifp->if_baudrate = ifmedia_baudrate(ime->ifm_media); 699 1.31.2.2 skrll #endif 700 1.31.2.2 skrll return error; 701 1.31.2.2 skrll } 702 1.31.2.2 skrll 703 1.31.2.2 skrll void 704 1.31.2.2 skrll ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr) 705 1.31.2.2 skrll { 706 1.31.2.7 skrll struct ieee80211com *ic; 707 1.31.2.7 skrll struct ieee80211_rateset *rs; 708 1.31.2.2 skrll 709 1.31.2.7 skrll ic = ieee80211_find_instance(ifp); 710 1.31.2.7 skrll if (!ic) { 711 1.31.2.7 skrll if_printf(ifp, "%s: no 802.11 instance!\n", __func__); 712 1.31.2.7 skrll return; 713 1.31.2.7 skrll } 714 1.31.2.2 skrll imr->ifm_status = IFM_AVALID; 715 1.31.2.2 skrll imr->ifm_active = IFM_IEEE80211; 716 1.31.2.2 skrll if (ic->ic_state == IEEE80211_S_RUN) 717 1.31.2.2 skrll imr->ifm_status |= IFM_ACTIVE; 718 1.31.2.7 skrll /* 719 1.31.2.7 skrll * Calculate a current rate if possible. 720 1.31.2.7 skrll */ 721 1.31.2.8 christos if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 722 1.31.2.7 skrll /* 723 1.31.2.7 skrll * A fixed rate is set, report that. 724 1.31.2.7 skrll */ 725 1.31.2.7 skrll rs = &ic->ic_sup_rates[ic->ic_curmode]; 726 1.31.2.7 skrll imr->ifm_active |= ieee80211_rate2media(ic, 727 1.31.2.7 skrll rs->rs_rates[ic->ic_fixed_rate], ic->ic_curmode); 728 1.31.2.7 skrll } else if (ic->ic_opmode == IEEE80211_M_STA) { 729 1.31.2.7 skrll /* 730 1.31.2.7 skrll * In station mode report the current transmit rate. 731 1.31.2.7 skrll */ 732 1.31.2.7 skrll rs = &ic->ic_bss->ni_rates; 733 1.31.2.7 skrll imr->ifm_active |= ieee80211_rate2media(ic, 734 1.31.2.7 skrll rs->rs_rates[ic->ic_bss->ni_txrate], ic->ic_curmode); 735 1.31.2.7 skrll } else 736 1.31.2.7 skrll imr->ifm_active |= IFM_AUTO; 737 1.31.2.2 skrll switch (ic->ic_opmode) { 738 1.31.2.2 skrll case IEEE80211_M_STA: 739 1.31.2.2 skrll break; 740 1.31.2.2 skrll case IEEE80211_M_IBSS: 741 1.31.2.2 skrll imr->ifm_active |= IFM_IEEE80211_ADHOC; 742 1.31.2.2 skrll break; 743 1.31.2.2 skrll case IEEE80211_M_AHDEMO: 744 1.31.2.2 skrll /* should not come here */ 745 1.31.2.2 skrll break; 746 1.31.2.2 skrll case IEEE80211_M_HOSTAP: 747 1.31.2.2 skrll imr->ifm_active |= IFM_IEEE80211_HOSTAP; 748 1.31.2.2 skrll break; 749 1.31.2.2 skrll case IEEE80211_M_MONITOR: 750 1.31.2.2 skrll imr->ifm_active |= IFM_IEEE80211_MONITOR; 751 1.31.2.2 skrll break; 752 1.31.2.2 skrll } 753 1.31.2.2 skrll switch (ic->ic_curmode) { 754 1.31.2.2 skrll case IEEE80211_MODE_11A: 755 1.31.2.2 skrll imr->ifm_active |= IFM_IEEE80211_11A; 756 1.31.2.2 skrll break; 757 1.31.2.2 skrll case IEEE80211_MODE_11B: 758 1.31.2.2 skrll imr->ifm_active |= IFM_IEEE80211_11B; 759 1.31.2.2 skrll break; 760 1.31.2.2 skrll case IEEE80211_MODE_11G: 761 1.31.2.2 skrll imr->ifm_active |= IFM_IEEE80211_11G; 762 1.31.2.2 skrll break; 763 1.31.2.2 skrll case IEEE80211_MODE_FH: 764 1.31.2.2 skrll imr->ifm_active |= IFM_IEEE80211_FH; 765 1.31.2.2 skrll break; 766 1.31.2.7 skrll case IEEE80211_MODE_TURBO_A: 767 1.31.2.2 skrll imr->ifm_active |= IFM_IEEE80211_11A 768 1.31.2.2 skrll | IFM_IEEE80211_TURBO; 769 1.31.2.2 skrll break; 770 1.31.2.7 skrll case IEEE80211_MODE_TURBO_G: 771 1.31.2.7 skrll imr->ifm_active |= IFM_IEEE80211_11G 772 1.31.2.7 skrll | IFM_IEEE80211_TURBO; 773 1.31.2.7 skrll break; 774 1.31.2.2 skrll } 775 1.31.2.2 skrll } 776 1.31.2.2 skrll 777 1.31.2.2 skrll void 778 1.31.2.7 skrll ieee80211_watchdog(struct ieee80211com *ic) 779 1.31.2.2 skrll { 780 1.31.2.7 skrll struct ieee80211_node_table *nt; 781 1.31.2.7 skrll int need_inact_timer = 0; 782 1.31.2.2 skrll 783 1.31.2.7 skrll if (ic->ic_state != IEEE80211_S_INIT) { 784 1.31.2.7 skrll if (ic->ic_mgt_timer && --ic->ic_mgt_timer == 0) 785 1.31.2.7 skrll ieee80211_new_state(ic, IEEE80211_S_SCAN, 0); 786 1.31.2.7 skrll nt = &ic->ic_scan; 787 1.31.2.7 skrll if (nt->nt_inact_timer) { 788 1.31.2.7 skrll if (--nt->nt_inact_timer == 0) 789 1.31.2.7 skrll nt->nt_timeout(nt); 790 1.31.2.7 skrll need_inact_timer += nt->nt_inact_timer; 791 1.31.2.7 skrll } 792 1.31.2.7 skrll nt = &ic->ic_sta; 793 1.31.2.7 skrll if (nt->nt_inact_timer) { 794 1.31.2.7 skrll if (--nt->nt_inact_timer == 0) 795 1.31.2.7 skrll nt->nt_timeout(nt); 796 1.31.2.7 skrll need_inact_timer += nt->nt_inact_timer; 797 1.31.2.2 skrll } 798 1.31.2.2 skrll } 799 1.31.2.7 skrll if (ic->ic_mgt_timer != 0 || need_inact_timer) 800 1.31.2.7 skrll ic->ic_ifp->if_timer = 1; 801 1.31.2.2 skrll } 802 1.31.2.2 skrll 803 1.31.2.2 skrll /* 804 1.31.2.2 skrll * Set the current phy mode and recalculate the active channel 805 1.31.2.2 skrll * set based on the available channels for this mode. Also 806 1.31.2.2 skrll * select a new default/current channel if the current one is 807 1.31.2.2 skrll * inappropriate for this mode. 808 1.31.2.2 skrll */ 809 1.31.2.2 skrll int 810 1.31.2.2 skrll ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode) 811 1.31.2.2 skrll { 812 1.31.2.2 skrll #define N(a) (sizeof(a) / sizeof(a[0])) 813 1.31.2.2 skrll static const u_int chanflags[] = { 814 1.31.2.2 skrll 0, /* IEEE80211_MODE_AUTO */ 815 1.31.2.2 skrll IEEE80211_CHAN_A, /* IEEE80211_MODE_11A */ 816 1.31.2.2 skrll IEEE80211_CHAN_B, /* IEEE80211_MODE_11B */ 817 1.31.2.2 skrll IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_11G */ 818 1.31.2.2 skrll IEEE80211_CHAN_FHSS, /* IEEE80211_MODE_FH */ 819 1.31.2.7 skrll IEEE80211_CHAN_T, /* IEEE80211_MODE_TURBO_A */ 820 1.31.2.7 skrll IEEE80211_CHAN_108G, /* IEEE80211_MODE_TURBO_G */ 821 1.31.2.2 skrll }; 822 1.31.2.2 skrll struct ieee80211_channel *c; 823 1.31.2.2 skrll u_int modeflags; 824 1.31.2.2 skrll int i; 825 1.31.2.2 skrll 826 1.31.2.2 skrll /* validate new mode */ 827 1.31.2.2 skrll if ((ic->ic_modecaps & (1<<mode)) == 0) { 828 1.31.2.2 skrll IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY, 829 1.31.2.7 skrll "%s: mode %u not supported (caps 0x%x)\n", 830 1.31.2.7 skrll __func__, mode, ic->ic_modecaps); 831 1.31.2.2 skrll return EINVAL; 832 1.31.2.2 skrll } 833 1.31.2.2 skrll 834 1.31.2.2 skrll /* 835 1.31.2.2 skrll * Verify at least one channel is present in the available 836 1.31.2.2 skrll * channel list before committing to the new mode. 837 1.31.2.2 skrll */ 838 1.31.2.2 skrll IASSERT(mode < N(chanflags), ("Unexpected mode %u", mode)); 839 1.31.2.2 skrll modeflags = chanflags[mode]; 840 1.31.2.2 skrll for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 841 1.31.2.2 skrll c = &ic->ic_channels[i]; 842 1.31.2.2 skrll if (mode == IEEE80211_MODE_AUTO) { 843 1.31.2.2 skrll /* ignore turbo channels for autoselect */ 844 1.31.2.2 skrll if ((c->ic_flags &~ IEEE80211_CHAN_TURBO) != 0) 845 1.31.2.2 skrll break; 846 1.31.2.2 skrll } else { 847 1.31.2.2 skrll if ((c->ic_flags & modeflags) == modeflags) 848 1.31.2.2 skrll break; 849 1.31.2.2 skrll } 850 1.31.2.2 skrll } 851 1.31.2.2 skrll if (i > IEEE80211_CHAN_MAX) { 852 1.31.2.2 skrll IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY, 853 1.31.2.7 skrll "%s: no channels found for mode %u\n", __func__, mode); 854 1.31.2.2 skrll return EINVAL; 855 1.31.2.2 skrll } 856 1.31.2.2 skrll 857 1.31.2.2 skrll /* 858 1.31.2.2 skrll * Calculate the active channel set. 859 1.31.2.2 skrll */ 860 1.31.2.2 skrll memset(ic->ic_chan_active, 0, sizeof(ic->ic_chan_active)); 861 1.31.2.2 skrll for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 862 1.31.2.2 skrll c = &ic->ic_channels[i]; 863 1.31.2.2 skrll if (mode == IEEE80211_MODE_AUTO) { 864 1.31.2.2 skrll /* take anything but pure turbo channels */ 865 1.31.2.2 skrll if ((c->ic_flags &~ IEEE80211_CHAN_TURBO) != 0) 866 1.31.2.2 skrll setbit(ic->ic_chan_active, i); 867 1.31.2.2 skrll } else { 868 1.31.2.2 skrll if ((c->ic_flags & modeflags) == modeflags) 869 1.31.2.2 skrll setbit(ic->ic_chan_active, i); 870 1.31.2.2 skrll } 871 1.31.2.2 skrll } 872 1.31.2.2 skrll /* 873 1.31.2.2 skrll * If no current/default channel is setup or the current 874 1.31.2.2 skrll * channel is wrong for the mode then pick the first 875 1.31.2.2 skrll * available channel from the active list. This is likely 876 1.31.2.2 skrll * not the right one. 877 1.31.2.2 skrll */ 878 1.31.2.2 skrll if (ic->ic_ibss_chan == NULL || 879 1.31.2.2 skrll isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ic->ic_ibss_chan))) { 880 1.31.2.2 skrll for (i = 0; i <= IEEE80211_CHAN_MAX; i++) 881 1.31.2.2 skrll if (isset(ic->ic_chan_active, i)) { 882 1.31.2.2 skrll ic->ic_ibss_chan = &ic->ic_channels[i]; 883 1.31.2.2 skrll break; 884 1.31.2.2 skrll } 885 1.31.2.2 skrll IASSERT(ic->ic_ibss_chan != NULL && 886 1.31.2.2 skrll isset(ic->ic_chan_active, 887 1.31.2.2 skrll ieee80211_chan2ieee(ic, ic->ic_ibss_chan)), 888 1.31.2.2 skrll ("Bad IBSS channel %u", 889 1.31.2.2 skrll ieee80211_chan2ieee(ic, ic->ic_ibss_chan))); 890 1.31.2.2 skrll } 891 1.31.2.7 skrll /* 892 1.31.2.7 skrll * If the desired channel is set but no longer valid then reset it. 893 1.31.2.7 skrll */ 894 1.31.2.7 skrll if (ic->ic_des_chan != IEEE80211_CHAN_ANYC && 895 1.31.2.7 skrll isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ic->ic_des_chan))) 896 1.31.2.7 skrll ic->ic_des_chan = IEEE80211_CHAN_ANYC; 897 1.31.2.2 skrll 898 1.31.2.2 skrll /* 899 1.31.2.7 skrll * Do mode-specific rate setup. 900 1.31.2.2 skrll */ 901 1.31.2.2 skrll if (mode == IEEE80211_MODE_11G) { 902 1.31.2.7 skrll /* 903 1.31.2.7 skrll * Use a mixed 11b/11g rate set. 904 1.31.2.7 skrll */ 905 1.31.2.7 skrll ieee80211_set11gbasicrates(&ic->ic_sup_rates[mode], 906 1.31.2.7 skrll IEEE80211_MODE_11G); 907 1.31.2.7 skrll } else if (mode == IEEE80211_MODE_11B) { 908 1.31.2.7 skrll /* 909 1.31.2.7 skrll * Force pure 11b rate set. 910 1.31.2.7 skrll */ 911 1.31.2.7 skrll ieee80211_set11gbasicrates(&ic->ic_sup_rates[mode], 912 1.31.2.7 skrll IEEE80211_MODE_11B); 913 1.31.2.7 skrll } 914 1.31.2.7 skrll /* 915 1.31.2.7 skrll * Setup an initial rate set according to the 916 1.31.2.7 skrll * current/default channel selected above. This 917 1.31.2.7 skrll * will be changed when scanning but must exist 918 1.31.2.7 skrll * now so driver have a consistent state of ic_ibss_chan. 919 1.31.2.7 skrll */ 920 1.31.2.7 skrll if (ic->ic_bss) /* NB: can be called before lateattach */ 921 1.31.2.7 skrll ic->ic_bss->ni_rates = ic->ic_sup_rates[mode]; 922 1.31.2.2 skrll 923 1.31.2.2 skrll ic->ic_curmode = mode; 924 1.31.2.7 skrll ieee80211_reset_erp(ic); /* reset ERP state */ 925 1.31.2.7 skrll ieee80211_wme_initparams(ic); /* reset WME stat */ 926 1.31.2.7 skrll 927 1.31.2.2 skrll return 0; 928 1.31.2.2 skrll #undef N 929 1.31.2.2 skrll } 930 1.31.2.2 skrll 931 1.31.2.2 skrll /* 932 1.31.2.2 skrll * Return the phy mode for with the specified channel so the 933 1.31.2.7 skrll * caller can select a rate set. This is problematic for channels 934 1.31.2.7 skrll * where multiple operating modes are possible (e.g. 11g+11b). 935 1.31.2.7 skrll * In those cases we defer to the current operating mode when set. 936 1.31.2.2 skrll */ 937 1.31.2.2 skrll enum ieee80211_phymode 938 1.31.2.2 skrll ieee80211_chan2mode(struct ieee80211com *ic, struct ieee80211_channel *chan) 939 1.31.2.2 skrll { 940 1.31.2.7 skrll if (IEEE80211_IS_CHAN_5GHZ(chan)) { 941 1.31.2.7 skrll /* 942 1.31.2.7 skrll * This assumes all 11a turbo channels are also 943 1.31.2.7 skrll * usable withut turbo, which is currently true. 944 1.31.2.7 skrll */ 945 1.31.2.7 skrll if (ic->ic_curmode == IEEE80211_MODE_TURBO_A) 946 1.31.2.7 skrll return IEEE80211_MODE_TURBO_A; 947 1.31.2.2 skrll return IEEE80211_MODE_11A; 948 1.31.2.7 skrll } else if (IEEE80211_IS_CHAN_FHSS(chan)) 949 1.31.2.2 skrll return IEEE80211_MODE_FH; 950 1.31.2.7 skrll else if (chan->ic_flags & (IEEE80211_CHAN_OFDM|IEEE80211_CHAN_DYN)) { 951 1.31.2.7 skrll /* 952 1.31.2.7 skrll * This assumes all 11g channels are also usable 953 1.31.2.7 skrll * for 11b, which is currently true. 954 1.31.2.7 skrll */ 955 1.31.2.7 skrll if (ic->ic_curmode == IEEE80211_MODE_TURBO_G) 956 1.31.2.7 skrll return IEEE80211_MODE_TURBO_G; 957 1.31.2.7 skrll if (ic->ic_curmode == IEEE80211_MODE_11B) 958 1.31.2.7 skrll return IEEE80211_MODE_11B; 959 1.31.2.2 skrll return IEEE80211_MODE_11G; 960 1.31.2.7 skrll } else 961 1.31.2.2 skrll return IEEE80211_MODE_11B; 962 1.31.2.2 skrll } 963 1.31.2.2 skrll 964 1.31.2.2 skrll /* 965 1.31.2.2 skrll * convert IEEE80211 rate value to ifmedia subtype. 966 1.31.2.2 skrll * ieee80211 rate is in unit of 0.5Mbps. 967 1.31.2.2 skrll */ 968 1.31.2.2 skrll int 969 1.31.2.2 skrll ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode) 970 1.31.2.2 skrll { 971 1.31.2.2 skrll #define N(a) (sizeof(a) / sizeof(a[0])) 972 1.31.2.2 skrll static const struct { 973 1.31.2.2 skrll u_int m; /* rate + mode */ 974 1.31.2.2 skrll u_int r; /* if_media rate */ 975 1.31.2.2 skrll } rates[] = { 976 1.31.2.2 skrll { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 }, 977 1.31.2.2 skrll { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 }, 978 1.31.2.2 skrll { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 }, 979 1.31.2.2 skrll { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 }, 980 1.31.2.2 skrll { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 }, 981 1.31.2.2 skrll { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 }, 982 1.31.2.2 skrll { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 }, 983 1.31.2.2 skrll { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 }, 984 1.31.2.2 skrll { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 }, 985 1.31.2.2 skrll { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 }, 986 1.31.2.2 skrll { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 }, 987 1.31.2.2 skrll { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 }, 988 1.31.2.2 skrll { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 }, 989 1.31.2.2 skrll { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 }, 990 1.31.2.2 skrll { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 }, 991 1.31.2.2 skrll { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 }, 992 1.31.2.2 skrll { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 }, 993 1.31.2.2 skrll { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 }, 994 1.31.2.2 skrll { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 }, 995 1.31.2.2 skrll { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 }, 996 1.31.2.2 skrll { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 }, 997 1.31.2.2 skrll { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 }, 998 1.31.2.2 skrll { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 }, 999 1.31.2.2 skrll { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 }, 1000 1.31.2.2 skrll { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 }, 1001 1.31.2.2 skrll { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 }, 1002 1.31.2.2 skrll { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 }, 1003 1.31.2.2 skrll /* NB: OFDM72 doesn't realy exist so we don't handle it */ 1004 1.31.2.2 skrll }; 1005 1.31.2.2 skrll u_int mask, i; 1006 1.31.2.2 skrll 1007 1.31.2.2 skrll mask = rate & IEEE80211_RATE_VAL; 1008 1.31.2.2 skrll switch (mode) { 1009 1.31.2.2 skrll case IEEE80211_MODE_11A: 1010 1.31.2.7 skrll case IEEE80211_MODE_TURBO_A: 1011 1.31.2.2 skrll mask |= IFM_IEEE80211_11A; 1012 1.31.2.2 skrll break; 1013 1.31.2.2 skrll case IEEE80211_MODE_11B: 1014 1.31.2.2 skrll mask |= IFM_IEEE80211_11B; 1015 1.31.2.2 skrll break; 1016 1.31.2.2 skrll case IEEE80211_MODE_FH: 1017 1.31.2.2 skrll mask |= IFM_IEEE80211_FH; 1018 1.31.2.2 skrll break; 1019 1.31.2.2 skrll case IEEE80211_MODE_AUTO: 1020 1.31.2.2 skrll /* NB: ic may be NULL for some drivers */ 1021 1.31.2.2 skrll if (ic && ic->ic_phytype == IEEE80211_T_FH) { 1022 1.31.2.2 skrll mask |= IFM_IEEE80211_FH; 1023 1.31.2.2 skrll break; 1024 1.31.2.2 skrll } 1025 1.31.2.2 skrll /* NB: hack, 11g matches both 11b+11a rates */ 1026 1.31.2.2 skrll /* fall thru... */ 1027 1.31.2.2 skrll case IEEE80211_MODE_11G: 1028 1.31.2.7 skrll case IEEE80211_MODE_TURBO_G: 1029 1.31.2.2 skrll mask |= IFM_IEEE80211_11G; 1030 1.31.2.2 skrll break; 1031 1.31.2.2 skrll } 1032 1.31.2.2 skrll for (i = 0; i < N(rates); i++) 1033 1.31.2.2 skrll if (rates[i].m == mask) 1034 1.31.2.2 skrll return rates[i].r; 1035 1.31.2.2 skrll return IFM_AUTO; 1036 1.31.2.2 skrll #undef N 1037 1.31.2.2 skrll } 1038 1.31.2.2 skrll 1039 1.31.2.2 skrll int 1040 1.31.2.2 skrll ieee80211_media2rate(int mword) 1041 1.31.2.2 skrll { 1042 1.31.2.2 skrll #define N(a) (sizeof(a) / sizeof(a[0])) 1043 1.31.2.2 skrll static const int ieeerates[] = { 1044 1.31.2.2 skrll -1, /* IFM_AUTO */ 1045 1.31.2.2 skrll 0, /* IFM_MANUAL */ 1046 1.31.2.2 skrll 0, /* IFM_NONE */ 1047 1.31.2.2 skrll 2, /* IFM_IEEE80211_FH1 */ 1048 1.31.2.2 skrll 4, /* IFM_IEEE80211_FH2 */ 1049 1.31.2.7 skrll 2, /* IFM_IEEE80211_DS1 */ 1050 1.31.2.2 skrll 4, /* IFM_IEEE80211_DS2 */ 1051 1.31.2.2 skrll 11, /* IFM_IEEE80211_DS5 */ 1052 1.31.2.2 skrll 22, /* IFM_IEEE80211_DS11 */ 1053 1.31.2.2 skrll 44, /* IFM_IEEE80211_DS22 */ 1054 1.31.2.2 skrll 12, /* IFM_IEEE80211_OFDM6 */ 1055 1.31.2.2 skrll 18, /* IFM_IEEE80211_OFDM9 */ 1056 1.31.2.2 skrll 24, /* IFM_IEEE80211_OFDM12 */ 1057 1.31.2.2 skrll 36, /* IFM_IEEE80211_OFDM18 */ 1058 1.31.2.2 skrll 48, /* IFM_IEEE80211_OFDM24 */ 1059 1.31.2.2 skrll 72, /* IFM_IEEE80211_OFDM36 */ 1060 1.31.2.2 skrll 96, /* IFM_IEEE80211_OFDM48 */ 1061 1.31.2.2 skrll 108, /* IFM_IEEE80211_OFDM54 */ 1062 1.31.2.2 skrll 144, /* IFM_IEEE80211_OFDM72 */ 1063 1.31.2.2 skrll }; 1064 1.31.2.2 skrll return IFM_SUBTYPE(mword) < N(ieeerates) ? 1065 1.31.2.2 skrll ieeerates[IFM_SUBTYPE(mword)] : 0; 1066 1.31.2.2 skrll #undef N 1067 1.31.2.2 skrll } 1068
Indexes created Thu Oct 02 14:10:14 GMT 2025