Annotation of sys/net80211/ieee80211_regdomain.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: ieee80211_regdomain.c,v 1.7 2006/11/26 19:46:28 deraadt Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2004, 2005 Reyk Floeter <reyk@openbsd.org>
! 5: *
! 6: * Permission to use, copy, modify, and distribute this software for any
! 7: * purpose with or without fee is hereby granted, provided that the above
! 8: * copyright notice and this permission notice appear in all copies.
! 9: *
! 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 17: */
! 18:
! 19: /*
! 20: * Basic regulation domain extensions for the IEEE 802.11 stack
! 21: */
! 22:
! 23: #include <sys/param.h>
! 24: #include <sys/systm.h>
! 25: #include <sys/mbuf.h>
! 26: #include <sys/kernel.h>
! 27: #include <sys/socket.h>
! 28: #include <sys/sockio.h>
! 29: #include <sys/endian.h>
! 30: #include <sys/errno.h>
! 31:
! 32: #include <net/if.h>
! 33: #include <net/if_dl.h>
! 34: #include <net/if_media.h>
! 35: #include <net/if_arp.h>
! 36: #include <net/if_llc.h>
! 37:
! 38: #ifdef INET
! 39: #include <netinet/in.h>
! 40: #include <netinet/if_ether.h>
! 41: #endif
! 42:
! 43: #include <net80211/ieee80211_var.h>
! 44: #include <net80211/ieee80211_regdomain.h>
! 45:
! 46: int ieee80211_regdomain_compare_cn(const void *, const void *);
! 47: int ieee80211_regdomain_compare_rn(const void *, const void *);
! 48:
! 49: static const struct ieee80211_regdomainname
! 50: ieee80211_r_names[] = IEEE80211_REGDOMAIN_NAMES;
! 51:
! 52: static const struct ieee80211_regdomainmap
! 53: ieee80211_r_map[] = IEEE80211_REGDOMAIN_MAP;
! 54:
! 55: static const struct ieee80211_countryname
! 56: ieee80211_r_ctry[] = IEEE80211_REGDOMAIN_COUNTRY_NAMES;
! 57:
! 58: #ifndef bsearch
! 59: const void *bsearch(const void *, const void *, size_t, size_t,
! 60: int (*)(const void *, const void *));
! 61:
! 62: const void *
! 63: bsearch(const void *key, const void *base0, size_t nmemb, size_t size,
! 64: int (*compar)(const void *, const void *))
! 65: {
! 66: const char *base = base0;
! 67: int lim, cmp;
! 68: const void *p;
! 69:
! 70: for (lim = nmemb; lim != 0; lim >>= 1) {
! 71: p = base + (lim >> 1) * size;
! 72: cmp = (*compar)(key, p);
! 73: if (cmp == 0)
! 74: return ((const void *)p);
! 75: if (cmp > 0) { /* key > p: move right */
! 76: base = (const char *)p + size;
! 77: lim--;
! 78: } /* else move left */
! 79: }
! 80: return (NULL);
! 81: }
! 82: #endif
! 83:
! 84: int
! 85: ieee80211_regdomain_compare_cn(const void *a, const void *b)
! 86: {
! 87: return (strcmp(((const struct ieee80211_countryname*)a)->cn_name,
! 88: ((const struct ieee80211_countryname*)b)->cn_name));
! 89: }
! 90:
! 91: int
! 92: ieee80211_regdomain_compare_rn(const void *a, const void *b)
! 93: {
! 94: return (strcmp(((const struct ieee80211_regdomainname*)a)->rn_name,
! 95: ((const struct ieee80211_regdomainname*)b)->rn_name));
! 96: }
! 97:
! 98: u_int16_t
! 99: ieee80211_name2countrycode(const char *name)
! 100: {
! 101: const struct ieee80211_countryname key = { CTRY_DEFAULT, name }, *value;
! 102:
! 103: if ((value = bsearch(&key, &ieee80211_r_ctry,
! 104: sizeof(ieee80211_r_ctry) / sizeof(ieee80211_r_ctry[0]),
! 105: sizeof(struct ieee80211_countryname),
! 106: ieee80211_regdomain_compare_cn)) != NULL)
! 107: return (value->cn_code);
! 108:
! 109: return (CTRY_DEFAULT);
! 110: }
! 111:
! 112: u_int32_t
! 113: ieee80211_name2regdomain(const char *name)
! 114: {
! 115: const struct ieee80211_regdomainname *value;
! 116: struct ieee80211_regdomainname key;
! 117:
! 118: key.rn_domain = DMN_DEFAULT;
! 119: key.rn_name = name;
! 120:
! 121: if ((value = bsearch(&key, &ieee80211_r_names,
! 122: sizeof(ieee80211_r_names) / sizeof(ieee80211_r_names[0]),
! 123: sizeof(struct ieee80211_regdomainname),
! 124: ieee80211_regdomain_compare_rn)) != NULL)
! 125: return ((u_int32_t)value->rn_domain);
! 126:
! 127: return ((u_int32_t)DMN_DEFAULT);
! 128: }
! 129:
! 130: const char *
! 131: ieee80211_countrycode2name(u_int16_t code)
! 132: {
! 133: int i;
! 134:
! 135: /* Linear search over the table */
! 136: for (i = 0; i < (sizeof(ieee80211_r_ctry) /
! 137: sizeof(ieee80211_r_ctry[0])); i++)
! 138: if (ieee80211_r_ctry[i].cn_code == code)
! 139: return (ieee80211_r_ctry[i].cn_name);
! 140:
! 141: return (NULL);
! 142: }
! 143:
! 144: const char *
! 145: ieee80211_regdomain2name(u_int32_t regdomain)
! 146: {
! 147: int i;
! 148:
! 149: /* Linear search over the table */
! 150: for (i = 0; i < (sizeof(ieee80211_r_names) /
! 151: sizeof(ieee80211_r_names[0])); i++)
! 152: if (ieee80211_r_names[i].rn_domain == regdomain)
! 153: return (ieee80211_r_names[i].rn_name);
! 154:
! 155: return (ieee80211_r_names[0].rn_name);
! 156: }
! 157:
! 158: u_int32_t
! 159: ieee80211_regdomain2flag(u_int16_t regdomain, u_int16_t mhz)
! 160: {
! 161: int i;
! 162:
! 163: for (i = 0; i < (sizeof(ieee80211_r_map) /
! 164: sizeof(ieee80211_r_map[0])); i++) {
! 165: if (ieee80211_r_map[i].rm_domain == regdomain) {
! 166: if (mhz >= 2000 && mhz <= 3000)
! 167: return ((u_int32_t)
! 168: ieee80211_r_map[i].rm_domain_2ghz);
! 169: if (mhz >= IEEE80211_CHANNELS_5GHZ_MIN &&
! 170: mhz <= IEEE80211_CHANNELS_5GHZ_MAX)
! 171: return ((u_int32_t)
! 172: ieee80211_r_map[i].rm_domain_5ghz);
! 173: }
! 174: }
! 175:
! 176: return ((u_int32_t)DMN_DEBUG);
! 177: }
! 178:
! 179: u_int32_t
! 180: ieee80211_countrycode2regdomain(u_int16_t code)
! 181: {
! 182: int i;
! 183:
! 184: for (i = 0;
! 185: i < (sizeof(ieee80211_r_ctry) / sizeof(ieee80211_r_ctry[0])); i++)
! 186: if (ieee80211_r_ctry[i].cn_code == code)
! 187: return (ieee80211_r_ctry[i].cn_domain);
! 188:
! 189: return ((u_int32_t)DMN_DEFAULT);
! 190: }
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to ieee80211_regdomain.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / net80211