wlanctl.c revision 1.9
1 /* $NetBSD: wlanctl.c,v 1.9 2007/08/29 02:27:55 dogcow Exp $ */ 2 /*- 3 * Copyright (c) 2005 David Young. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or 6 * without modification, are permitted provided that the following 7 * conditions are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following 12 * disclaimer in the documentation and/or other materials provided 13 * with the distribution. 14 * 3. The name of David Young may not be used to endorse or promote 15 * products derived from this software without specific prior 16 * written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY David Young ``AS IS'' AND ANY 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 21 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL David 22 * Young BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 23 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 24 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 29 * OF SUCH DAMAGE. 30 */ 31 #include <err.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <unistd.h> 36 #include <assert.h> 37 38 #include <sys/param.h> 39 #include <sys/sysctl.h> 40 #include <sys/inttypes.h> 41 #include <sys/ioctl.h> 42 #include <sys/types.h> 43 #include <sys/socket.h> 44 45 #include <net/if.h> 46 #include <net/if_media.h> 47 #include <netinet/in.h> 48 #include <netinet/if_ether.h> 49 50 #include <net80211/ieee80211.h> 51 #include <net80211/ieee80211_node.h> 52 #include <net80211/ieee80211_sysctl.h> 53 54 #define NELTS(x) (sizeof(x)/sizeof((x)[0])) 55 56 struct flagname { 57 u_int32_t fn_flag; 58 const char *fn_name; 59 }; 60 61 struct cmdflags { 62 int cf_v; /* verbose */ 63 int cf_a; /* all 802.11 interfaces */ 64 int cf_p; /* public (i.e. non-private) dests */ 65 }; 66 67 static void print_flags(u_int32_t, const struct flagname *, u_int); 68 static int dump_nodes(const char *, int, struct cmdflags *); 69 static const char *ether_string(u_int8_t *); 70 static void parse_args(int *, char ***, struct cmdflags *); 71 static void print_capinfo(u_int16_t); 72 static void print_channel(u_int16_t, u_int16_t, u_int16_t); 73 static void print_node_flags(u_int32_t); 74 static void print_rateset(struct ieee80211_rateset *, int); 75 static void usage(void); 76 77 static void 78 print_rateset(struct ieee80211_rateset *rs, int txrate) 79 { 80 int i, rate; 81 const char *fmt, *basic; 82 83 printf("\trates"); 84 85 for (i = 0; i < rs->rs_nrates; i++) { 86 87 if ((rs->rs_rates[i] & IEEE80211_RATE_BASIC) != 0) 88 basic = "*"; 89 else 90 basic = ""; 91 if (i == txrate) 92 fmt = " [%s%d.%d]"; 93 else 94 fmt = " %s%d.%d"; 95 rate = 5 * (rs->rs_rates[i] & IEEE80211_RATE_VAL); 96 printf(fmt, basic, rate / 10, rate % 10); 97 } 98 printf("\n"); 99 } 100 101 static void 102 print_flags(u_int32_t flags, const struct flagname *flagnames, u_int nname) 103 { 104 int i; 105 const char *delim; 106 delim = "<"; 107 108 for (i = 0; i < nname; i++) { 109 if ((flags & flagnames[i].fn_flag) != 0) { 110 printf("%s%s", delim, flagnames[i].fn_name); 111 delim = ","; 112 } 113 } 114 115 printf("%s\n", (delim[0] == '<') ? "" : ">"); 116 } 117 118 static void 119 print_node_flags(u_int32_t flags) 120 { 121 const static struct flagname nodeflags[] = { 122 {IEEE80211_NODE_SYSCTL_F_BSS, "bss"} 123 , {IEEE80211_NODE_SYSCTL_F_STA, "sta"} 124 , {IEEE80211_NODE_SYSCTL_F_SCAN, "scan"} 125 }; 126 printf("\tnode flags %04x", flags); 127 128 print_flags(flags, nodeflags, NELTS(nodeflags)); 129 } 130 131 static void 132 print_capinfo(u_int16_t capinfo) 133 { 134 const static struct flagname capflags[] = { 135 {IEEE80211_CAPINFO_ESS, "ess"}, 136 {IEEE80211_CAPINFO_IBSS, "ibss"}, 137 {IEEE80211_CAPINFO_CF_POLLABLE, "cf pollable"}, 138 {IEEE80211_CAPINFO_CF_POLLREQ, "request cf poll"}, 139 {IEEE80211_CAPINFO_PRIVACY, "privacy"}, 140 {IEEE80211_CAPINFO_SHORT_PREAMBLE, "short preamble"}, 141 {IEEE80211_CAPINFO_PBCC, "pbcc"}, 142 {IEEE80211_CAPINFO_CHNL_AGILITY, "channel agility"}, 143 {IEEE80211_CAPINFO_SHORT_SLOTTIME, "short slot-time"}, 144 {IEEE80211_CAPINFO_RSN, "rsn"}, 145 {IEEE80211_CAPINFO_DSSSOFDM, "dsss-ofdm"} 146 }; 147 148 printf("\tcapabilities %04x", capinfo); 149 150 print_flags(capinfo, capflags, NELTS(capflags)); 151 } 152 153 static const char * 154 ether_string(u_int8_t *addr) 155 { 156 struct ether_addr ea; 157 (void)memcpy(ea.ether_addr_octet, addr, sizeof(ea.ether_addr_octet)); 158 return ether_ntoa(&ea); 159 } 160 161 static void 162 print_channel(u_int16_t chanidx, u_int16_t freq, u_int16_t flags) 163 { 164 const static struct flagname chanflags[] = { 165 {IEEE80211_CHAN_TURBO, "turbo"}, 166 {IEEE80211_CHAN_CCK, "cck"}, 167 {IEEE80211_CHAN_OFDM, "ofdm"}, 168 {IEEE80211_CHAN_2GHZ, "2.4GHz"}, 169 {IEEE80211_CHAN_5GHZ, "5GHz"}, 170 {IEEE80211_CHAN_PASSIVE, "passive scan"}, 171 {IEEE80211_CHAN_DYN, "dynamic cck-ofdm"}, 172 {IEEE80211_CHAN_GFSK, "gfsk"} 173 }; 174 printf("\tchan %d freq %dMHz flags %04x", chanidx, freq, flags); 175 176 print_flags(flags, chanflags, NELTS(chanflags)); 177 } 178 179 /* 180 * 181 * ifname: dump nodes belonging to the given interface, or belonging 182 * to all interfaces if NULL 183 * hdr_type: header type: IEEE80211_SYSCTL_T_NODE -> generic node, 184 * IEEE80211_SYSCTL_T_RSSADAPT -> rssadapt(9) info, 185 * IEEE80211_SYSCTL_T_DRVSPEC -> driver specific. 186 * cf: command flags, cf_v != 0 -> verbose 187 */ 188 static int 189 dump_nodes(const char *ifname_arg, int hdr_type, struct cmdflags *cf) 190 { 191 #if 0 192 /*39*/ u_int8_t ns_erp; /* 11g only */ 193 /*40*/ u_int32_t ns_rstamp; /* recv timestamp */ 194 /*64*/ u_int16_t ns_fhdwell; /* FH only */ 195 /*66*/ u_int8_t ns_fhindex; /* FH only */ 196 /*68*/ 197 #endif 198 u_int i, ifindex; 199 size_t namelen, nodes_len, totallen; 200 int name[12]; 201 int *vname; 202 char ifname[IFNAMSIZ]; 203 struct ieee80211_node_sysctl *pns, *ns; 204 u_int64_t ts; 205 206 namelen = NELTS(name); 207 208 if (sysctlnametomib("net.link.ieee80211.nodes", &name[0], 209 &namelen) != 0) { 210 warn("sysctlnametomib"); 211 return -1; 212 } 213 214 if (ifname_arg == NULL) 215 ifindex = 0; 216 else if ((ifindex = if_nametoindex(ifname_arg)) == 0) { 217 warn("if_nametoindex"); 218 return -1; 219 } 220 221 totallen = namelen + IEEE80211_SYSCTL_NODENAMELEN; 222 if (totallen >= NELTS(name)) { 223 warnx("Internal error finding sysctl mib"); 224 return -1; 225 } 226 vname = &name[namelen]; 227 228 vname[IEEE80211_SYSCTL_NODENAME_IF] = ifindex; 229 vname[IEEE80211_SYSCTL_NODENAME_OP] = IEEE80211_SYSCTL_OP_ALL; 230 vname[IEEE80211_SYSCTL_NODENAME_ARG] = 0; 231 vname[IEEE80211_SYSCTL_NODENAME_TYPE] = hdr_type; 232 vname[IEEE80211_SYSCTL_NODENAME_ELTSIZE] = sizeof(*ns); 233 vname[IEEE80211_SYSCTL_NODENAME_ELTCOUNT] = INT_MAX; 234 235 /* how many? */ 236 if (sysctl(name, totallen, NULL, &nodes_len, NULL, 0) != 0) { 237 warn("sysctl(count)"); 238 return -1; 239 } 240 241 ns = malloc(nodes_len); 242 243 if (ns == NULL) { 244 warn("malloc"); 245 return -1; 246 } 247 248 vname[IEEE80211_SYSCTL_NODENAME_ELTCOUNT] = nodes_len / sizeof(ns[0]); 249 250 /* Get them. */ 251 if (sysctl(name, totallen, ns, &nodes_len, NULL, 0) != 0) { 252 warn("sysctl(get)"); 253 return -1; 254 } 255 256 for (i = 0; i < nodes_len / sizeof(ns[0]); i++) { 257 pns = &ns[i]; 258 if (if_indextoname(pns->ns_ifindex, ifname) == NULL) { 259 warn("if_indextoname"); 260 return -1; 261 } 262 if (cf->cf_p && (pns->ns_capinfo & IEEE80211_CAPINFO_PRIVACY)) 263 continue; 264 printf("%s: mac %s ", ifname, ether_string(pns->ns_macaddr)); 265 printf("bss %s\n", ether_string(pns->ns_bssid)); 266 print_node_flags(pns->ns_flags); 267 268 /* TBD deal with binary ESSID */ 269 printf("\tess <%.*s>\n", pns->ns_esslen, pns->ns_essid); 270 271 print_channel(pns->ns_chanidx, pns->ns_freq, pns->ns_chanflags); 272 273 print_capinfo(pns->ns_capinfo); 274 275 assert(sizeof(ts) == sizeof(pns->ns_tstamp)); 276 memcpy(&ts, &pns->ns_tstamp[0], sizeof(ts)); 277 printf("\tbeacon-interval %d TU tsft %" PRIu64 " us\n", 278 pns->ns_intval, (u_int64_t)le64toh(ts)); 279 280 print_rateset(&pns->ns_rates, pns->ns_txrate); 281 282 printf("\tassoc-id %d assoc-failed %d inactivity %ds\n", 283 pns->ns_associd, pns->ns_fails, pns->ns_inact); 284 285 printf("\trssi %d txseq %d rxseq %d\n", 286 pns->ns_rssi, pns->ns_txseq, pns->ns_rxseq); 287 } 288 return 0; 289 } 290 291 static void 292 usage(void) 293 { 294 fprintf(stderr, "usage: %s [ -p ] [ -v ] -a\n" 295 "\t[ -v ] interface [ interface ... ]\n", getprogname()); 296 exit(EXIT_FAILURE); 297 } 298 299 static void 300 parse_args(int *argcp, char ***argvp, struct cmdflags *cf) 301 { 302 int ch; 303 304 (void)memset(cf, 0, sizeof(*cf)); 305 306 while ((ch = getopt(*argcp, *argvp, "apv")) != -1) { 307 switch (ch) { 308 case 'a': 309 cf->cf_a = 1; 310 break; 311 case 'p': 312 cf->cf_p = 1; 313 break; 314 case 'v': 315 cf->cf_v = 1; 316 break; 317 default: 318 warnx("unknown option -%c", ch); 319 usage(); 320 } 321 } 322 323 *argcp -= optind; 324 *argvp += optind; 325 } 326 327 #define LOGICAL_XOR(x, y) (!(x) != !(y)) 328 329 int 330 main(int argc, char **argv) 331 { 332 int i; 333 struct cmdflags cf; 334 335 parse_args(&argc, &argv, &cf); 336 337 if (!LOGICAL_XOR(argc > 0, cf.cf_a)) 338 usage(); 339 340 if (cf.cf_a) { 341 if (dump_nodes(NULL, IEEE80211_SYSCTL_T_NODE, &cf) != 0) 342 return EXIT_FAILURE; 343 return EXIT_SUCCESS; 344 } 345 for (i = 0; i < argc; i++) { 346 if (dump_nodes(argv[i], IEEE80211_SYSCTL_T_NODE, &cf) != 0) 347 return EXIT_FAILURE; 348 } 349 350 return EXIT_SUCCESS; 351 } 352
Indexes created Mon Oct 20 08:09:54 GMT 2025