drivers/net/wireless/zd1211rw/zd_ieee80211.h

   1 /* ZD1211 USB-WLAN driver for Linux
   2  *
   3  * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
   4  * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  */
  20
  21 #ifndef _ZD_IEEE80211_H
  22 #define _ZD_IEEE80211_H
  23
  24 #include <net/mac80211.h>
  25
  26 /* Additional definitions from the standards.
  27  */
  28
  29 #define ZD_REGDOMAIN_FCC        0x10
  30 #define ZD_REGDOMAIN_IC         0x20
  31 #define ZD_REGDOMAIN_ETSI       0x30
  32 #define ZD_REGDOMAIN_SPAIN      0x31
  33 #define ZD_REGDOMAIN_FRANCE     0x32
  34 #define ZD_REGDOMAIN_JAPAN_ADD  0x40
  35 #define ZD_REGDOMAIN_JAPAN      0x41
  36
  37 enum {
  38         MIN_CHANNEL24 = 1,
  39         MAX_CHANNEL24 = 14,
  40 };
  41
  42 void zd_geo_init(struct ieee80211_hw *hw, u8 regdomain);
  43
  44 #define ZD_PLCP_SERVICE_LENGTH_EXTENSION 0x80
  45
  46 struct ofdm_plcp_header {
  47         u8 prefix[3];
  48         __le16 service;
  49 } __attribute__((packed));
  50
  51 static inline u8 zd_ofdm_plcp_header_rate(const struct ofdm_plcp_header *header)
  52 {
  53         return header->prefix[0] & 0xf;
  54 }
  55
  56 /* The following defines give the encoding of the 4-bit rate field in the
  57  * OFDM (802.11a/802.11g) PLCP header. Notify that these values are used to
  58  * define the zd-rate values for OFDM.
  59  *
  60  * See the struct zd_ctrlset definition in zd_mac.h.
  61  */
  62 #define ZD_OFDM_PLCP_RATE_6M    0xb
  63 #define ZD_OFDM_PLCP_RATE_9M    0xf
  64 #define ZD_OFDM_PLCP_RATE_12M   0xa
  65 #define ZD_OFDM_PLCP_RATE_18M   0xe
  66 #define ZD_OFDM_PLCP_RATE_24M   0x9
  67 #define ZD_OFDM_PLCP_RATE_36M   0xd
  68 #define ZD_OFDM_PLCP_RATE_48M   0x8
  69 #define ZD_OFDM_PLCP_RATE_54M   0xc
  70
  71 struct cck_plcp_header {
  72         u8 signal;
  73         u8 service;
  74         __le16 length;
  75         __le16 crc16;
  76 } __attribute__((packed));
  77
  78 static inline u8 zd_cck_plcp_header_signal(const struct cck_plcp_header *header)
  79 {
  80         return header->signal;
  81 }
  82
  83 /* These defines give the encodings of the signal field in the 802.11b PLCP
  84  * header. The signal field gives the bit rate of the following packet. Even
  85  * if technically wrong we use CCK here also for the 1 MBit/s and 2 MBit/s
  86  * rate to stay consistent with Zydas and our use of the term.
  87  *
  88  * Notify that these values are *not* used in the zd-rates.
  89  */
  90 #define ZD_CCK_PLCP_SIGNAL_1M   0x0a
  91 #define ZD_CCK_PLCP_SIGNAL_2M   0x14
  92 #define ZD_CCK_PLCP_SIGNAL_5M5  0x37
  93 #define ZD_CCK_PLCP_SIGNAL_11M  0x6e
  94
  95 #endif /* _ZD_IEEE80211_H */