ieee80211_proto.c revision 1.15.2.4
1 1.15.2.4 skrll /* $NetBSD: ieee80211_proto.c,v 1.15.2.4 2004/09/18 14:54:39 skrll Exp $ */ 2 1.15.2.2 skrll /*- 3 1.15.2.2 skrll * Copyright (c) 2001 Atsushi Onoe 4 1.15.2.2 skrll * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting 5 1.15.2.2 skrll * All rights reserved. 6 1.15.2.2 skrll * 7 1.15.2.2 skrll * Redistribution and use in source and binary forms, with or without 8 1.15.2.2 skrll * modification, are permitted provided that the following conditions 9 1.15.2.2 skrll * are met: 10 1.15.2.2 skrll * 1. Redistributions of source code must retain the above copyright 11 1.15.2.2 skrll * notice, this list of conditions and the following disclaimer. 12 1.15.2.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 13 1.15.2.2 skrll * notice, this list of conditions and the following disclaimer in the 14 1.15.2.2 skrll * documentation and/or other materials provided with the distribution. 15 1.15.2.2 skrll * 3. The name of the author may not be used to endorse or promote products 16 1.15.2.2 skrll * derived from this software without specific prior written permission. 17 1.15.2.2 skrll * 18 1.15.2.2 skrll * Alternatively, this software may be distributed under the terms of the 19 1.15.2.2 skrll * GNU General Public License ("GPL") version 2 as published by the Free 20 1.15.2.2 skrll * Software Foundation. 21 1.15.2.2 skrll * 22 1.15.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 1.15.2.2 skrll * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 1.15.2.2 skrll * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 1.15.2.2 skrll * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 1.15.2.2 skrll * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 1.15.2.2 skrll * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 1.15.2.2 skrll * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 1.15.2.2 skrll * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 1.15.2.2 skrll * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 1.15.2.2 skrll * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 1.15.2.2 skrll */ 33 1.15.2.2 skrll 34 1.15.2.2 skrll #include <sys/cdefs.h> 35 1.15.2.2 skrll #ifdef __FreeBSD__ 36 1.15.2.2 skrll __FBSDID("$FreeBSD: src/sys/net80211/ieee80211_proto.c,v 1.8 2004/04/02 20:22:25 sam Exp $"); 37 1.15.2.2 skrll #else 38 1.15.2.4 skrll __KERNEL_RCSID(0, "$NetBSD: ieee80211_proto.c,v 1.15.2.4 2004/09/18 14:54:39 skrll Exp $"); 39 1.15.2.2 skrll #endif 40 1.15.2.2 skrll 41 1.15.2.2 skrll /* 42 1.15.2.2 skrll * IEEE 802.11 protocol support. 43 1.15.2.2 skrll */ 44 1.15.2.2 skrll 45 1.15.2.2 skrll #include "opt_inet.h" 46 1.15.2.2 skrll 47 1.15.2.2 skrll #include <sys/param.h> 48 1.15.2.2 skrll #include <sys/systm.h> 49 1.15.2.2 skrll #include <sys/mbuf.h> 50 1.15.2.2 skrll #include <sys/malloc.h> 51 1.15.2.2 skrll #include <sys/kernel.h> 52 1.15.2.2 skrll #include <sys/socket.h> 53 1.15.2.2 skrll #include <sys/sockio.h> 54 1.15.2.2 skrll #include <sys/endian.h> 55 1.15.2.2 skrll #include <sys/errno.h> 56 1.15.2.2 skrll #ifdef __FreeBSD__ 57 1.15.2.2 skrll #include <sys/bus.h> 58 1.15.2.2 skrll #endif 59 1.15.2.2 skrll #include <sys/proc.h> 60 1.15.2.2 skrll #include <sys/sysctl.h> 61 1.15.2.2 skrll 62 1.15.2.2 skrll #ifdef __FreeBSD__ 63 1.15.2.2 skrll #include <machine/atomic.h> 64 1.15.2.2 skrll #endif 65 1.15.2.2 skrll 66 1.15.2.2 skrll #include <net/if.h> 67 1.15.2.2 skrll #include <net/if_dl.h> 68 1.15.2.2 skrll #include <net/if_media.h> 69 1.15.2.2 skrll #include <net/if_arp.h> 70 1.15.2.2 skrll #ifdef __FreeBSD__ 71 1.15.2.2 skrll #include <net/ethernet.h> 72 1.15.2.2 skrll #else 73 1.15.2.2 skrll #include <net/if_ether.h> 74 1.15.2.2 skrll #endif 75 1.15.2.2 skrll #include <net/if_llc.h> 76 1.15.2.2 skrll 77 1.15.2.2 skrll #include <net80211/ieee80211_var.h> 78 1.15.2.2 skrll #include <net80211/ieee80211_compat.h> 79 1.15.2.2 skrll 80 1.15.2.2 skrll #include <net/bpf.h> 81 1.15.2.2 skrll 82 1.15.2.2 skrll #ifdef INET 83 1.15.2.2 skrll #include <netinet/in.h> 84 1.15.2.2 skrll #ifdef __FreeBSD__ 85 1.15.2.2 skrll #include <netinet/if_ether.h> 86 1.15.2.2 skrll #else 87 1.15.2.2 skrll #include <net/if_ether.h> 88 1.15.2.2 skrll #endif 89 1.15.2.2 skrll #endif 90 1.15.2.2 skrll 91 1.15.2.2 skrll #include <net/route.h> 92 1.15.2.2 skrll 93 1.15.2.2 skrll #define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2) 94 1.15.2.2 skrll 95 1.15.2.2 skrll const char *ieee80211_mgt_subtype_name[] = { 96 1.15.2.2 skrll "assoc_req", "assoc_resp", "reassoc_req", "reassoc_resp", 97 1.15.2.2 skrll "probe_req", "probe_resp", "reserved#6", "reserved#7", 98 1.15.2.2 skrll "beacon", "atim", "disassoc", "auth", 99 1.15.2.2 skrll "deauth", "reserved#13", "reserved#14", "reserved#15" 100 1.15.2.2 skrll }; 101 1.15.2.2 skrll const char *ieee80211_state_name[IEEE80211_S_MAX] = { 102 1.15.2.2 skrll "INIT", /* IEEE80211_S_INIT */ 103 1.15.2.2 skrll "SCAN", /* IEEE80211_S_SCAN */ 104 1.15.2.2 skrll "AUTH", /* IEEE80211_S_AUTH */ 105 1.15.2.2 skrll "ASSOC", /* IEEE80211_S_ASSOC */ 106 1.15.2.2 skrll "RUN" /* IEEE80211_S_RUN */ 107 1.15.2.2 skrll }; 108 1.15.2.2 skrll 109 1.15.2.2 skrll static int ieee80211_newstate(struct ieee80211com *, enum ieee80211_state, int); 110 1.15.2.2 skrll 111 1.15.2.2 skrll void 112 1.15.2.2 skrll ieee80211_proto_attach(struct ifnet *ifp) 113 1.15.2.2 skrll { 114 1.15.2.2 skrll struct ieee80211com *ic = (void *)ifp; 115 1.15.2.2 skrll 116 1.15.2.2 skrll ifp->if_hdrlen = sizeof(struct ieee80211_frame); 117 1.15.2.2 skrll 118 1.15.2.2 skrll #ifdef notdef 119 1.15.2.2 skrll ic->ic_rtsthreshold = IEEE80211_RTS_DEFAULT; 120 1.15.2.2 skrll #else 121 1.15.2.2 skrll ic->ic_rtsthreshold = IEEE80211_RTS_MAX; 122 1.15.2.2 skrll #endif 123 1.15.2.2 skrll ic->ic_fragthreshold = 2346; /* XXX not used yet */ 124 1.15.2.2 skrll ic->ic_fixed_rate = -1; /* no fixed rate */ 125 1.15.2.2 skrll ic->ic_protmode = IEEE80211_PROT_CTSONLY; 126 1.15.2.2 skrll 127 1.15.2.2 skrll #ifdef __FreeBSD__ 128 1.15.2.2 skrll mtx_init(&ic->ic_mgtq.ifq_mtx, ifp->if_xname, "mgmt send q", MTX_DEF); 129 1.15.2.2 skrll #endif 130 1.15.2.2 skrll 131 1.15.2.2 skrll /* protocol state change handler */ 132 1.15.2.2 skrll ic->ic_newstate = ieee80211_newstate; 133 1.15.2.2 skrll 134 1.15.2.2 skrll /* initialize management frame handlers */ 135 1.15.2.2 skrll ic->ic_recv_mgmt = ieee80211_recv_mgmt; 136 1.15.2.2 skrll ic->ic_send_mgmt = ieee80211_send_mgmt; 137 1.15.2.2 skrll } 138 1.15.2.2 skrll 139 1.15.2.2 skrll void 140 1.15.2.2 skrll ieee80211_proto_detach(struct ifnet *ifp) 141 1.15.2.2 skrll { 142 1.15.2.2 skrll struct ieee80211com *ic = (void *)ifp; 143 1.15.2.2 skrll 144 1.15.2.2 skrll #ifdef __FreeBSD__ 145 1.15.2.2 skrll IF_DRAIN(&ic->ic_mgtq); 146 1.15.2.2 skrll mtx_destroy(&ic->ic_mgtq.ifq_mtx); 147 1.15.2.2 skrll #else 148 1.15.2.2 skrll IF_PURGE(&ic->ic_mgtq); 149 1.15.2.2 skrll IF_PURGE(&ic->ic_pwrsaveq); 150 1.15.2.2 skrll #endif 151 1.15.2.2 skrll } 152 1.15.2.2 skrll 153 1.15.2.2 skrll void 154 1.15.2.2 skrll ieee80211_print_essid(u_int8_t *essid, int len) 155 1.15.2.2 skrll { 156 1.15.2.2 skrll int i; 157 1.15.2.2 skrll u_int8_t *p; 158 1.15.2.2 skrll 159 1.15.2.2 skrll if (len > IEEE80211_NWID_LEN) 160 1.15.2.2 skrll len = IEEE80211_NWID_LEN; 161 1.15.2.2 skrll /* determine printable or not */ 162 1.15.2.2 skrll for (i = 0, p = essid; i < len; i++, p++) { 163 1.15.2.2 skrll if (*p < ' ' || *p > 0x7e) 164 1.15.2.2 skrll break; 165 1.15.2.2 skrll } 166 1.15.2.2 skrll if (i == len) { 167 1.15.2.2 skrll printf("\""); 168 1.15.2.2 skrll for (i = 0, p = essid; i < len; i++, p++) 169 1.15.2.2 skrll printf("%c", *p); 170 1.15.2.2 skrll printf("\""); 171 1.15.2.2 skrll } else { 172 1.15.2.2 skrll printf("0x"); 173 1.15.2.2 skrll for (i = 0, p = essid; i < len; i++, p++) 174 1.15.2.2 skrll printf("%02x", *p); 175 1.15.2.2 skrll } 176 1.15.2.2 skrll } 177 1.15.2.2 skrll 178 1.15.2.2 skrll void 179 1.15.2.2 skrll ieee80211_dump_pkt(u_int8_t *buf, int len, int rate, int rssi) 180 1.15.2.2 skrll { 181 1.15.2.2 skrll struct ieee80211_frame *wh; 182 1.15.2.2 skrll int i; 183 1.15.2.2 skrll 184 1.15.2.2 skrll wh = (struct ieee80211_frame *)buf; 185 1.15.2.2 skrll switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) { 186 1.15.2.2 skrll case IEEE80211_FC1_DIR_NODS: 187 1.15.2.2 skrll printf("NODS %s", ether_sprintf(wh->i_addr2)); 188 1.15.2.2 skrll printf("->%s", ether_sprintf(wh->i_addr1)); 189 1.15.2.2 skrll printf("(%s)", ether_sprintf(wh->i_addr3)); 190 1.15.2.2 skrll break; 191 1.15.2.2 skrll case IEEE80211_FC1_DIR_TODS: 192 1.15.2.2 skrll printf("TODS %s", ether_sprintf(wh->i_addr2)); 193 1.15.2.2 skrll printf("->%s", ether_sprintf(wh->i_addr3)); 194 1.15.2.2 skrll printf("(%s)", ether_sprintf(wh->i_addr1)); 195 1.15.2.2 skrll break; 196 1.15.2.2 skrll case IEEE80211_FC1_DIR_FROMDS: 197 1.15.2.2 skrll printf("FRDS %s", ether_sprintf(wh->i_addr3)); 198 1.15.2.2 skrll printf("->%s", ether_sprintf(wh->i_addr1)); 199 1.15.2.2 skrll printf("(%s)", ether_sprintf(wh->i_addr2)); 200 1.15.2.2 skrll break; 201 1.15.2.2 skrll case IEEE80211_FC1_DIR_DSTODS: 202 1.15.2.2 skrll printf("DSDS %s", ether_sprintf((u_int8_t *)&wh[1])); 203 1.15.2.2 skrll printf("->%s", ether_sprintf(wh->i_addr3)); 204 1.15.2.2 skrll printf("(%s", ether_sprintf(wh->i_addr2)); 205 1.15.2.2 skrll printf("->%s)", ether_sprintf(wh->i_addr1)); 206 1.15.2.2 skrll break; 207 1.15.2.2 skrll } 208 1.15.2.2 skrll switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 209 1.15.2.2 skrll case IEEE80211_FC0_TYPE_DATA: 210 1.15.2.2 skrll printf(" data"); 211 1.15.2.2 skrll break; 212 1.15.2.2 skrll case IEEE80211_FC0_TYPE_MGT: 213 1.15.2.2 skrll printf(" %s", ieee80211_mgt_subtype_name[ 214 1.15.2.2 skrll (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) 215 1.15.2.2 skrll >> IEEE80211_FC0_SUBTYPE_SHIFT]); 216 1.15.2.2 skrll break; 217 1.15.2.2 skrll default: 218 1.15.2.2 skrll printf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK); 219 1.15.2.2 skrll break; 220 1.15.2.2 skrll } 221 1.15.2.2 skrll if (wh->i_fc[1] & IEEE80211_FC1_WEP) 222 1.15.2.2 skrll printf(" WEP"); 223 1.15.2.2 skrll if (rate >= 0) 224 1.15.2.2 skrll printf(" %dM", rate / 2); 225 1.15.2.2 skrll if (rssi >= 0) 226 1.15.2.2 skrll printf(" +%d", rssi); 227 1.15.2.2 skrll printf("\n"); 228 1.15.2.2 skrll if (len > 0) { 229 1.15.2.2 skrll for (i = 0; i < len; i++) { 230 1.15.2.2 skrll if ((i & 1) == 0) 231 1.15.2.2 skrll printf(" "); 232 1.15.2.2 skrll printf("%02x", buf[i]); 233 1.15.2.2 skrll } 234 1.15.2.2 skrll printf("\n"); 235 1.15.2.2 skrll } 236 1.15.2.2 skrll } 237 1.15.2.2 skrll 238 1.15.2.2 skrll int 239 1.15.2.2 skrll ieee80211_fix_rate(struct ieee80211com *ic, struct ieee80211_node *ni, int flags) 240 1.15.2.2 skrll { 241 1.15.2.2 skrll #define RV(v) ((v) & IEEE80211_RATE_VAL) 242 1.15.2.2 skrll int i, j, ignore, error; 243 1.15.2.2 skrll int okrate, badrate; 244 1.15.2.2 skrll struct ieee80211_rateset *srs, *nrs; 245 1.15.2.2 skrll u_int8_t r; 246 1.15.2.2 skrll 247 1.15.2.2 skrll error = 0; 248 1.15.2.2 skrll okrate = badrate = 0; 249 1.15.2.2 skrll srs = &ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)]; 250 1.15.2.2 skrll nrs = &ni->ni_rates; 251 1.15.2.2 skrll for (i = 0; i < nrs->rs_nrates; ) { 252 1.15.2.2 skrll ignore = 0; 253 1.15.2.2 skrll if (flags & IEEE80211_F_DOSORT) { 254 1.15.2.2 skrll /* 255 1.15.2.2 skrll * Sort rates. 256 1.15.2.2 skrll */ 257 1.15.2.2 skrll for (j = i + 1; j < nrs->rs_nrates; j++) { 258 1.15.2.2 skrll if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) { 259 1.15.2.2 skrll r = nrs->rs_rates[i]; 260 1.15.2.2 skrll nrs->rs_rates[i] = nrs->rs_rates[j]; 261 1.15.2.2 skrll nrs->rs_rates[j] = r; 262 1.15.2.2 skrll } 263 1.15.2.2 skrll } 264 1.15.2.2 skrll } 265 1.15.2.2 skrll r = nrs->rs_rates[i] & IEEE80211_RATE_VAL; 266 1.15.2.2 skrll badrate = r; 267 1.15.2.2 skrll if (flags & IEEE80211_F_DOFRATE) { 268 1.15.2.2 skrll /* 269 1.15.2.2 skrll * Apply fixed rate constraint. Note that we do 270 1.15.2.2 skrll * not apply the constraint to basic rates as 271 1.15.2.2 skrll * otherwise we may not be able to associate if 272 1.15.2.2 skrll * the rate set we submit to the AP is invalid 273 1.15.2.2 skrll * (e.g. fix rate at 36Mb/s which is not a basic 274 1.15.2.2 skrll * rate for 11a operation). 275 1.15.2.2 skrll */ 276 1.15.2.2 skrll if ((nrs->rs_rates[i] & IEEE80211_RATE_BASIC) == 0 && 277 1.15.2.2 skrll ic->ic_fixed_rate >= 0 && 278 1.15.2.2 skrll r != RV(srs->rs_rates[ic->ic_fixed_rate])) 279 1.15.2.2 skrll ignore++; 280 1.15.2.2 skrll } 281 1.15.2.2 skrll if (flags & IEEE80211_F_DONEGO) { 282 1.15.2.2 skrll /* 283 1.15.2.2 skrll * Check against supported rates. 284 1.15.2.2 skrll */ 285 1.15.2.2 skrll for (j = 0; j < srs->rs_nrates; j++) { 286 1.15.2.2 skrll if (r == RV(srs->rs_rates[j])) { 287 1.15.2.2 skrll /* 288 1.15.2.2 skrll * Overwrite with the supported rate 289 1.15.2.2 skrll * value so any basic rate bit is set. 290 1.15.2.2 skrll * This insures that response we send 291 1.15.2.2 skrll * to stations have the necessary basic 292 1.15.2.2 skrll * rate bit set. 293 1.15.2.2 skrll */ 294 1.15.2.2 skrll nrs->rs_rates[i] = srs->rs_rates[j]; 295 1.15.2.2 skrll break; 296 1.15.2.2 skrll } 297 1.15.2.2 skrll } 298 1.15.2.2 skrll if (j == srs->rs_nrates) { 299 1.15.2.2 skrll /* 300 1.15.2.2 skrll * A rate in the node's rate set is not 301 1.15.2.2 skrll * supported. If this is a basic rate and we 302 1.15.2.2 skrll * are operating as an AP then this is an error. 303 1.15.2.2 skrll * Otherwise we just discard/ignore the rate. 304 1.15.2.2 skrll * Note that this is important for 11b stations 305 1.15.2.2 skrll * when they want to associate with an 11g AP. 306 1.15.2.2 skrll */ 307 1.15.2.2 skrll if (ic->ic_opmode == IEEE80211_M_HOSTAP && 308 1.15.2.2 skrll (nrs->rs_rates[i] & IEEE80211_RATE_BASIC)) 309 1.15.2.2 skrll error++; 310 1.15.2.2 skrll ignore++; 311 1.15.2.2 skrll } 312 1.15.2.2 skrll } 313 1.15.2.2 skrll if (flags & IEEE80211_F_DODEL) { 314 1.15.2.2 skrll /* 315 1.15.2.2 skrll * Delete unacceptable rates. 316 1.15.2.2 skrll */ 317 1.15.2.2 skrll if (ignore) { 318 1.15.2.2 skrll nrs->rs_nrates--; 319 1.15.2.2 skrll for (j = i; j < nrs->rs_nrates; j++) 320 1.15.2.2 skrll nrs->rs_rates[j] = nrs->rs_rates[j + 1]; 321 1.15.2.2 skrll nrs->rs_rates[j] = 0; 322 1.15.2.2 skrll continue; 323 1.15.2.2 skrll } 324 1.15.2.2 skrll } 325 1.15.2.2 skrll if (!ignore) { 326 1.15.2.2 skrll okrate = nrs->rs_rates[i]; 327 1.15.2.2 skrll ni->ni_txrate = i; 328 1.15.2.2 skrll } 329 1.15.2.2 skrll i++; 330 1.15.2.2 skrll } 331 1.15.2.2 skrll if (okrate == 0 || error != 0) 332 1.15.2.2 skrll return badrate | IEEE80211_RATE_BASIC; 333 1.15.2.2 skrll else 334 1.15.2.2 skrll return RV(okrate); 335 1.15.2.2 skrll #undef RV 336 1.15.2.2 skrll } 337 1.15.2.2 skrll 338 1.15.2.2 skrll static int 339 1.15.2.2 skrll ieee80211_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int mgt) 340 1.15.2.2 skrll { 341 1.15.2.2 skrll struct ifnet *ifp = &ic->ic_if; 342 1.15.2.2 skrll struct ieee80211_node *ni; 343 1.15.2.2 skrll enum ieee80211_state ostate; 344 1.15.2.2 skrll ieee80211_node_critsec_decl(s); 345 1.15.2.2 skrll int linkstate = LINK_STATE_DOWN; 346 1.15.2.2 skrll 347 1.15.2.2 skrll ostate = ic->ic_state; 348 1.15.2.2 skrll IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE, ("%s: %s -> %s\n", __func__, 349 1.15.2.2 skrll ieee80211_state_name[ostate], ieee80211_state_name[nstate])); 350 1.15.2.2 skrll ic->ic_state = nstate; /* state transition */ 351 1.15.2.2 skrll ni = ic->ic_bss; /* NB: no reference held */ 352 1.15.2.2 skrll switch (nstate) { 353 1.15.2.2 skrll case IEEE80211_S_INIT: 354 1.15.2.2 skrll switch (ostate) { 355 1.15.2.2 skrll case IEEE80211_S_INIT: 356 1.15.2.2 skrll break; 357 1.15.2.2 skrll case IEEE80211_S_RUN: 358 1.15.2.2 skrll switch (ic->ic_opmode) { 359 1.15.2.2 skrll case IEEE80211_M_STA: 360 1.15.2.2 skrll IEEE80211_SEND_MGMT(ic, ni, 361 1.15.2.2 skrll IEEE80211_FC0_SUBTYPE_DISASSOC, 362 1.15.2.2 skrll IEEE80211_REASON_ASSOC_LEAVE); 363 1.15.2.2 skrll break; 364 1.15.2.2 skrll case IEEE80211_M_HOSTAP: 365 1.15.2.2 skrll ieee80211_node_critsec_begin(ic, s); 366 1.15.2.2 skrll TAILQ_FOREACH(ni, &ic->ic_node, ni_list) { 367 1.15.2.2 skrll if (ni->ni_associd == 0) 368 1.15.2.2 skrll continue; 369 1.15.2.2 skrll IEEE80211_SEND_MGMT(ic, ni, 370 1.15.2.2 skrll IEEE80211_FC0_SUBTYPE_DISASSOC, 371 1.15.2.2 skrll IEEE80211_REASON_ASSOC_LEAVE); 372 1.15.2.2 skrll } 373 1.15.2.2 skrll ieee80211_node_critsec_end(ic, s); 374 1.15.2.2 skrll break; 375 1.15.2.2 skrll default: 376 1.15.2.2 skrll break; 377 1.15.2.2 skrll } 378 1.15.2.2 skrll /* FALLTHRU */ 379 1.15.2.2 skrll case IEEE80211_S_ASSOC: 380 1.15.2.2 skrll switch (ic->ic_opmode) { 381 1.15.2.2 skrll case IEEE80211_M_STA: 382 1.15.2.2 skrll IEEE80211_SEND_MGMT(ic, ni, 383 1.15.2.2 skrll IEEE80211_FC0_SUBTYPE_DEAUTH, 384 1.15.2.2 skrll IEEE80211_REASON_AUTH_LEAVE); 385 1.15.2.2 skrll break; 386 1.15.2.2 skrll case IEEE80211_M_HOSTAP: 387 1.15.2.2 skrll ieee80211_node_critsec_begin(ic, s); 388 1.15.2.2 skrll TAILQ_FOREACH(ni, &ic->ic_node, ni_list) { 389 1.15.2.2 skrll IEEE80211_SEND_MGMT(ic, ni, 390 1.15.2.2 skrll IEEE80211_FC0_SUBTYPE_DEAUTH, 391 1.15.2.2 skrll IEEE80211_REASON_AUTH_LEAVE); 392 1.15.2.2 skrll } 393 1.15.2.2 skrll ieee80211_node_critsec_end(ic, s); 394 1.15.2.2 skrll break; 395 1.15.2.2 skrll default: 396 1.15.2.2 skrll break; 397 1.15.2.2 skrll } 398 1.15.2.2 skrll /* FALLTHRU */ 399 1.15.2.2 skrll case IEEE80211_S_AUTH: 400 1.15.2.2 skrll case IEEE80211_S_SCAN: 401 1.15.2.2 skrll ic->ic_mgt_timer = 0; 402 1.15.2.2 skrll #ifdef __FreeBSD__ 403 1.15.2.2 skrll IF_DRAIN(&ic->ic_mgtq); 404 1.15.2.2 skrll #else 405 1.15.2.2 skrll IF_PURGE(&ic->ic_mgtq); 406 1.15.2.2 skrll IF_PURGE(&ic->ic_pwrsaveq); 407 1.15.2.2 skrll #endif 408 1.15.2.2 skrll if (ic->ic_wep_ctx != NULL) { 409 1.15.2.2 skrll free(ic->ic_wep_ctx, M_DEVBUF); 410 1.15.2.2 skrll ic->ic_wep_ctx = NULL; 411 1.15.2.2 skrll } 412 1.15.2.2 skrll ieee80211_free_allnodes(ic); 413 1.15.2.2 skrll break; 414 1.15.2.2 skrll } 415 1.15.2.2 skrll break; 416 1.15.2.2 skrll case IEEE80211_S_SCAN: 417 1.15.2.2 skrll ic->ic_flags &= ~IEEE80211_F_SIBSS; 418 1.15.2.2 skrll /* initialize bss for probe request */ 419 1.15.2.2 skrll IEEE80211_ADDR_COPY(ni->ni_macaddr, ifp->if_broadcastaddr); 420 1.15.2.2 skrll IEEE80211_ADDR_COPY(ni->ni_bssid, ifp->if_broadcastaddr); 421 1.15.2.2 skrll ni->ni_rates = ic->ic_sup_rates[ 422 1.15.2.2 skrll ieee80211_chan2mode(ic, ni->ni_chan)]; 423 1.15.2.2 skrll ni->ni_associd = 0; 424 1.15.2.2 skrll ni->ni_rstamp = 0; 425 1.15.2.2 skrll switch (ostate) { 426 1.15.2.2 skrll case IEEE80211_S_INIT: 427 1.15.2.2 skrll if (ic->ic_opmode == IEEE80211_M_HOSTAP && 428 1.15.2.2 skrll ic->ic_des_chan != IEEE80211_CHAN_ANYC) { 429 1.15.2.2 skrll /* 430 1.15.2.2 skrll * AP operation and we already have a channel; 431 1.15.2.2 skrll * bypass the scan and startup immediately. 432 1.15.2.2 skrll */ 433 1.15.2.2 skrll ieee80211_create_ibss(ic, ic->ic_des_chan); 434 1.15.2.2 skrll } else { 435 1.15.2.2 skrll ieee80211_begin_scan(ic); 436 1.15.2.2 skrll } 437 1.15.2.2 skrll break; 438 1.15.2.2 skrll case IEEE80211_S_SCAN: 439 1.15.2.2 skrll /* scan next */ 440 1.15.2.2 skrll if (ic->ic_flags & IEEE80211_F_ASCAN) { 441 1.15.2.2 skrll IEEE80211_SEND_MGMT(ic, ni, 442 1.15.2.2 skrll IEEE80211_FC0_SUBTYPE_PROBE_REQ, 0); 443 1.15.2.2 skrll } 444 1.15.2.2 skrll break; 445 1.15.2.2 skrll case IEEE80211_S_RUN: 446 1.15.2.2 skrll /* beacon miss */ 447 1.15.2.2 skrll IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE, 448 1.15.2.2 skrll ("no recent beacons from %s; rescanning\n", 449 1.15.2.2 skrll ether_sprintf(ic->ic_bss->ni_bssid))); 450 1.15.2.2 skrll /* XXX this clears the scan set */ 451 1.15.2.2 skrll ieee80211_free_allnodes(ic); 452 1.15.2.2 skrll /* FALLTHRU */ 453 1.15.2.2 skrll case IEEE80211_S_AUTH: 454 1.15.2.2 skrll case IEEE80211_S_ASSOC: 455 1.15.2.2 skrll /* timeout restart scan */ 456 1.15.2.2 skrll ni = ieee80211_find_node(ic, ic->ic_bss->ni_macaddr); 457 1.15.2.2 skrll if (ni != NULL) { 458 1.15.2.2 skrll ni->ni_fails++; 459 1.15.2.2 skrll } 460 1.15.2.2 skrll ieee80211_begin_scan(ic); 461 1.15.2.2 skrll break; 462 1.15.2.2 skrll } 463 1.15.2.2 skrll break; 464 1.15.2.2 skrll case IEEE80211_S_AUTH: 465 1.15.2.2 skrll switch (ostate) { 466 1.15.2.2 skrll case IEEE80211_S_INIT: 467 1.15.2.2 skrll IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY, 468 1.15.2.2 skrll ("%s: invalid transition\n", __func__)); 469 1.15.2.2 skrll break; 470 1.15.2.2 skrll case IEEE80211_S_SCAN: 471 1.15.2.2 skrll IEEE80211_SEND_MGMT(ic, ni, 472 1.15.2.2 skrll IEEE80211_FC0_SUBTYPE_AUTH, 1); 473 1.15.2.2 skrll break; 474 1.15.2.2 skrll case IEEE80211_S_AUTH: 475 1.15.2.2 skrll case IEEE80211_S_ASSOC: 476 1.15.2.2 skrll switch (mgt) { 477 1.15.2.2 skrll case IEEE80211_FC0_SUBTYPE_AUTH: 478 1.15.2.2 skrll /* ??? */ 479 1.15.2.2 skrll IEEE80211_SEND_MGMT(ic, ni, 480 1.15.2.2 skrll IEEE80211_FC0_SUBTYPE_AUTH, 2); 481 1.15.2.2 skrll break; 482 1.15.2.2 skrll case IEEE80211_FC0_SUBTYPE_DEAUTH: 483 1.15.2.2 skrll /* ignore and retry scan on timeout */ 484 1.15.2.2 skrll break; 485 1.15.2.2 skrll } 486 1.15.2.2 skrll break; 487 1.15.2.2 skrll case IEEE80211_S_RUN: 488 1.15.2.2 skrll switch (mgt) { 489 1.15.2.2 skrll case IEEE80211_FC0_SUBTYPE_AUTH: 490 1.15.2.2 skrll IEEE80211_SEND_MGMT(ic, ni, 491 1.15.2.2 skrll IEEE80211_FC0_SUBTYPE_AUTH, 2); 492 1.15.2.2 skrll ic->ic_state = ostate; /* stay RUN */ 493 1.15.2.2 skrll break; 494 1.15.2.2 skrll case IEEE80211_FC0_SUBTYPE_DEAUTH: 495 1.15.2.2 skrll /* try to reauth */ 496 1.15.2.2 skrll IEEE80211_SEND_MGMT(ic, ni, 497 1.15.2.2 skrll IEEE80211_FC0_SUBTYPE_AUTH, 1); 498 1.15.2.2 skrll break; 499 1.15.2.2 skrll } 500 1.15.2.2 skrll break; 501 1.15.2.2 skrll } 502 1.15.2.2 skrll break; 503 1.15.2.2 skrll case IEEE80211_S_ASSOC: 504 1.15.2.2 skrll switch (ostate) { 505 1.15.2.2 skrll case IEEE80211_S_INIT: 506 1.15.2.2 skrll case IEEE80211_S_SCAN: 507 1.15.2.2 skrll case IEEE80211_S_ASSOC: 508 1.15.2.2 skrll IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY, 509 1.15.2.2 skrll ("%s: invalid transition\n", __func__)); 510 1.15.2.2 skrll break; 511 1.15.2.2 skrll case IEEE80211_S_AUTH: 512 1.15.2.2 skrll IEEE80211_SEND_MGMT(ic, ni, 513 1.15.2.2 skrll IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); 514 1.15.2.2 skrll break; 515 1.15.2.2 skrll case IEEE80211_S_RUN: 516 1.15.2.2 skrll IEEE80211_SEND_MGMT(ic, ni, 517 1.15.2.4 skrll IEEE80211_FC0_SUBTYPE_REASSOC_REQ, 0); 518 1.15.2.2 skrll break; 519 1.15.2.2 skrll } 520 1.15.2.2 skrll break; 521 1.15.2.2 skrll case IEEE80211_S_RUN: 522 1.15.2.2 skrll linkstate = LINK_STATE_UP; 523 1.15.2.2 skrll switch (ostate) { 524 1.15.2.2 skrll case IEEE80211_S_INIT: 525 1.15.2.2 skrll case IEEE80211_S_AUTH: 526 1.15.2.2 skrll case IEEE80211_S_RUN: 527 1.15.2.2 skrll IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY, 528 1.15.2.2 skrll ("%s: invalid transition\n", __func__)); 529 1.15.2.2 skrll break; 530 1.15.2.2 skrll case IEEE80211_S_SCAN: /* adhoc/hostap mode */ 531 1.15.2.2 skrll case IEEE80211_S_ASSOC: /* infra mode */ 532 1.15.2.2 skrll IASSERT(ni->ni_txrate < ni->ni_rates.rs_nrates, 533 1.15.2.2 skrll ("%s: bogus xmit rate %u setup", __func__, 534 1.15.2.2 skrll ni->ni_txrate)); 535 1.15.2.2 skrll #ifdef IEEE80211_DEBUG 536 1.15.2.2 skrll if (ieee80211_msg_debug(ic)) { 537 1.15.2.2 skrll if_printf(ifp, " "); 538 1.15.2.2 skrll if (ic->ic_opmode == IEEE80211_M_STA) 539 1.15.2.2 skrll printf("associated "); 540 1.15.2.2 skrll else 541 1.15.2.2 skrll printf("synchronized "); 542 1.15.2.2 skrll printf("with %s ssid ", 543 1.15.2.2 skrll ether_sprintf(ni->ni_bssid)); 544 1.15.2.2 skrll ieee80211_print_essid(ic->ic_bss->ni_essid, 545 1.15.2.2 skrll ni->ni_esslen); 546 1.15.2.2 skrll printf(" channel %d start %uMb\n", 547 1.15.2.2 skrll ieee80211_chan2ieee(ic, ni->ni_chan), 548 1.15.2.2 skrll IEEE80211_RATE2MBS(ni->ni_rates.rs_rates[ni->ni_txrate])); 549 1.15.2.2 skrll } 550 1.15.2.2 skrll #endif 551 1.15.2.2 skrll ic->ic_mgt_timer = 0; 552 1.15.2.2 skrll (*ifp->if_start)(ifp); 553 1.15.2.2 skrll break; 554 1.15.2.2 skrll } 555 1.15.2.2 skrll break; 556 1.15.2.2 skrll } 557 1.15.2.2 skrll if (ifp->if_link_state != linkstate) { 558 1.15.2.2 skrll ifp->if_link_state = linkstate; 559 1.15.2.2 skrll s = splnet(); 560 1.15.2.2 skrll rt_ifmsg(ifp); 561 1.15.2.2 skrll splx(s); 562 1.15.2.2 skrll } 563 1.15.2.2 skrll return 0; 564 1.15.2.2 skrll } 565
Indexes created Thu Oct 02 14:10:14 GMT 2025