1 /* $NetBSD: wlanctl.c,v 1.11 2009/04/19 01:53:17 lukem 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_sysctl.h> 52 53 struct flagname { 54 u_int32_t fn_flag; 55 const char *fn_name; 56 }; 57 58 struct cmdflags { 59 int cf_v; /* verbose */ 60 int cf_a; /* all 802.11 interfaces */ 61 int cf_p; /* public (i.e. non-private) dests */ 62 }; 63 64 static void print_flags(u_int32_t, const struct flagname *, u_int); 65 static int dump_nodes(const char *, int, struct cmdflags *); 66 static const char *ether_string(u_int8_t *); 67 static void parse_args(int *, char ***, struct cmdflags *); 68 static void print_capinfo(u_int16_t); 69 static void print_channel(u_int16_t, u_int16_t, u_int16_t); 70 static void print_node_flags(u_int32_t); 71 static void print_rateset(struct ieee80211_rateset *, int); 72 static void usage(void); 73 74 static void 75 print_rateset(struct ieee80211_rateset *rs, int txrate) 76 { 77 int i, rate; 78 const char *fmt, *basic; 79 80 printf("\trates"); 81 82 for (i = 0; i < rs->rs_nrates; i++) { 83 84 if ((rs->rs_rates[i] & IEEE80211_RATE_BASIC) != 0) 85 basic = "*"; 86 else 87 basic = ""; 88 if (i == txrate) 89 fmt = " [%s%d.%d]"; 90 else 91 fmt = " %s%d.%d"; 92 rate = 5 * (rs->rs_rates[i] & IEEE80211_RATE_VAL); 93 printf(fmt, basic, rate / 10, rate % 10); 94 } 95 printf("\n"); 96 } 97 98 static void 99 print_flags(u_int32_t flags, const struct flagname *flagnames, u_int nname) 100 { 101 u_int i; 102 const char *delim; 103 delim = "<"; 104 105 for (i = 0; i < nname; i++) { 106 if ((flags & flagnames[i].fn_flag) != 0) { 107 printf("%s%s", delim, flagnames[i].fn_name); 108 delim = ","; 109 } 110 } 111 112 printf("%s\n", (delim[0] == '<') ? "" : ">"); 113 } 114 115 static void 116 print_node_flags(u_int32_t flags) 117 { 118 static const struct flagname nodeflags[] = { 119 {IEEE80211_NODE_SYSCTL_F_BSS, "bss"} 120 , {IEEE80211_NODE_SYSCTL_F_STA, "sta"} 121 , {IEEE80211_NODE_SYSCTL_F_SCAN, "scan"} 122 }; 123 printf("\tnode flags %04x", flags); 124 125 print_flags(flags, nodeflags, __arraycount(nodeflags)); 126 } 127 128 static void 129 print_capinfo(u_int16_t capinfo) 130 { 131 static const struct flagname capflags[] = { 132 {IEEE80211_CAPINFO_ESS, "ess"}, 133 {IEEE80211_CAPINFO_IBSS, "ibss"}, 134 {IEEE80211_CAPINFO_CF_POLLABLE, "cf pollable"}, 135 {IEEE80211_CAPINFO_CF_POLLREQ, "request cf poll"}, 136 {IEEE80211_CAPINFO_PRIVACY, "privacy"}, 137 {IEEE80211_CAPINFO_SHORT_PREAMBLE, "short preamble"}, 138 {IEEE80211_CAPINFO_PBCC, "pbcc"}, 139 {IEEE80211_CAPINFO_CHNL_AGILITY, "channel agility"}, 140 {IEEE80211_CAPINFO_SHORT_SLOTTIME, "short slot-time"}, 141 {IEEE80211_CAPINFO_RSN, "rsn"}, 142 {IEEE80211_CAPINFO_DSSSOFDM, "dsss-ofdm"} 143 }; 144 145 printf("\tcapabilities %04x", capinfo); 146 147 print_flags(capinfo, capflags, __arraycount(capflags)); 148 } 149 150 static const char * 151 ether_string(u_int8_t *addr) 152 { 153 struct ether_addr ea; 154 (void)memcpy(ea.ether_addr_octet, addr, sizeof(ea.ether_addr_octet)); 155 return ether_ntoa(&ea); 156 } 157 158 static void 159 print_channel(u_int16_t chanidx, u_int16_t freq, u_int16_t flags) 160 { 161 static const struct flagname chanflags[] = { 162 {IEEE80211_CHAN_TURBO, "turbo"}, 163 {IEEE80211_CHAN_CCK, "cck"}, 164 {IEEE80211_CHAN_OFDM, "ofdm"}, 165 {IEEE80211_CHAN_2GHZ, "2.4GHz"}, 166 {IEEE80211_CHAN_5GHZ, "5GHz"}, 167 {IEEE80211_CHAN_PASSIVE, "passive scan"}, 168 {IEEE80211_CHAN_DYN, "dynamic cck-ofdm"}, 169 {IEEE80211_CHAN_GFSK, "gfsk"} 170 }; 171 printf("\tchan %d freq %dMHz flags %04x", chanidx, freq, flags); 172 173 print_flags(flags, chanflags, __arraycount(chanflags)); 174 } 175 176 /* 177 * 178 * ifname: dump nodes belonging to the given interface, or belonging 179 * to all interfaces if NULL 180 * hdr_type: header type: IEEE80211_SYSCTL_T_NODE -> generic node, 181 * IEEE80211_SYSCTL_T_RSSADAPT -> rssadapt(9) info, 182 * IEEE80211_SYSCTL_T_DRVSPEC -> driver specific. 183 * cf: command flags, cf_v != 0 -> verbose 184 */ 185 static int 186 dump_nodes(const char *ifname_arg, int hdr_type, struct cmdflags *cf) 187 { 188 #if 0 189 /*39*/ u_int8_t ns_erp; /* 11g only */ 190 /*40*/ u_int32_t ns_rstamp; /* recv timestamp */ 191 /*64*/ u_int16_t ns_fhdwell; /* FH only */ 192 /*66*/ u_int8_t ns_fhindex; /* FH only */ 193 /*68*/ 194 #endif 195 u_int i, ifindex; 196 size_t namelen, nodes_len, totallen; 197 int name[12]; 198 int *vname; 199 char ifname[IFNAMSIZ]; 200 struct ieee80211_node_sysctl *pns, *ns; 201 u_int64_t ts; 202 203 namelen = __arraycount(name); 204 205 if (sysctlnametomib("net.link.ieee80211.nodes", &name[0], 206 &namelen) != 0) { 207 warn("sysctlnametomib"); 208 return -1; 209 } 210 211 if (ifname_arg == NULL) 212 ifindex = 0; 213 else if ((ifindex = if_nametoindex(ifname_arg)) == 0) { 214 warn("if_nametoindex"); 215 return -1; 216 } 217 218 totallen = namelen + IEEE80211_SYSCTL_NODENAMELEN; 219 if (totallen >= __arraycount(name)) { 220 warnx("Internal error finding sysctl mib"); 221 return -1; 222 } 223 vname = &name[namelen]; 224 225 vname[IEEE80211_SYSCTL_NODENAME_IF] = ifindex; 226 vname[IEEE80211_SYSCTL_NODENAME_OP] = IEEE80211_SYSCTL_OP_ALL; 227 vname[IEEE80211_SYSCTL_NODENAME_ARG] = 0; 228 vname[IEEE80211_SYSCTL_NODENAME_TYPE] = hdr_type; 229 vname[IEEE80211_SYSCTL_NODENAME_ELTSIZE] = sizeof(*ns); 230 vname[IEEE80211_SYSCTL_NODENAME_ELTCOUNT] = INT_MAX; 231 232 /* how many? */ 233 if (sysctl(name, totallen, NULL, &nodes_len, NULL, 0) != 0) { 234 warn("sysctl(count)"); 235 return -1; 236 } 237 238 ns = malloc(nodes_len); 239 240 if (ns == NULL) { 241 warn("malloc"); 242 return -1; 243 } 244 245 vname[IEEE80211_SYSCTL_NODENAME_ELTCOUNT] = nodes_len / sizeof(ns[0]); 246 247 /* Get them. */ 248 if (sysctl(name, totallen, ns, &nodes_len, NULL, 0) != 0) { 249 warn("sysctl(get)"); 250 return -1; 251 } 252 253 for (i = 0; i < nodes_len / sizeof(ns[0]); i++) { 254 pns = &ns[i]; 255 if (if_indextoname(pns->ns_ifindex, ifname) == NULL) { 256 warn("if_indextoname"); 257 return -1; 258 } 259 if (cf->cf_p && (pns->ns_capinfo & IEEE80211_CAPINFO_PRIVACY)) 260 continue; 261 printf("%s: mac %s ", ifname, ether_string(pns->ns_macaddr)); 262 printf("bss %s\n", ether_string(pns->ns_bssid)); 263 print_node_flags(pns->ns_flags); 264 265 /* TBD deal with binary ESSID */ 266 printf("\tess <%.*s>\n", pns->ns_esslen, pns->ns_essid); 267 268 print_channel(pns->ns_chanidx, pns->ns_freq, pns->ns_chanflags); 269 270 print_capinfo(pns->ns_capinfo); 271 272 assert(sizeof(ts) == sizeof(pns->ns_tstamp)); 273 memcpy(&ts, &pns->ns_tstamp[0], sizeof(ts)); 274 printf("\tbeacon-interval %d TU tsft %" PRIu64 " us\n", 275 pns->ns_intval, (u_int64_t)le64toh(ts)); 276 277 print_rateset(&pns->ns_rates, pns->ns_txrate); 278 279 printf("\tassoc-id %d assoc-failed %d inactivity %ds\n", 280 pns->ns_associd, pns->ns_fails, pns->ns_inact); 281 282 printf("\trssi %d txseq %d rxseq %d\n", 283 pns->ns_rssi, pns->ns_txseq, pns->ns_rxseq); 284 } 285 return 0; 286 } 287 288 static void 289 usage(void) 290 { 291 fprintf(stderr, "usage: %s [ -p ] [ -v ] -a\n" 292 "\t[ -v ] interface [ interface ... ]\n", getprogname()); 293 exit(EXIT_FAILURE); 294 } 295 296 static void 297 parse_args(int *argcp, char ***argvp, struct cmdflags *cf) 298 { 299 int ch; 300 301 (void)memset(cf, 0, sizeof(*cf)); 302 303 while ((ch = getopt(*argcp, *argvp, "apv")) != -1) { 304 switch (ch) { 305 case 'a': 306 cf->cf_a = 1; 307 break; 308 case 'p': 309 cf->cf_p = 1; 310 break; 311 case 'v': 312 cf->cf_v = 1; 313 break; 314 default: 315 warnx("unknown option -%c", ch); 316 usage(); 317 } 318 } 319 320 *argcp -= optind; 321 *argvp += optind; 322 } 323 324 #define LOGICAL_XOR(x, y) (!(x) != !(y)) 325 326 int 327 main(int argc, char **argv) 328 { 329 int i; 330 struct cmdflags cf; 331 332 parse_args(&argc, &argv, &cf); 333 334 if (!LOGICAL_XOR(argc > 0, cf.cf_a)) 335 usage(); 336 337 if (cf.cf_a) { 338 if (dump_nodes(NULL, IEEE80211_SYSCTL_T_NODE, &cf) != 0) 339 return EXIT_FAILURE; 340 return EXIT_SUCCESS; 341 } 342 for (i = 0; i < argc; i++) { 343 if (dump_nodes(argv[i], IEEE80211_SYSCTL_T_NODE, &cf) != 0) 344 return EXIT_FAILURE; 345 } 346 347 return EXIT_SUCCESS; 348 } 349