root/net80211/ieee80211_var.h

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    1 /*      $OpenBSD: ieee80211_var.h,v 1.32 2007/07/28 11:13:41 damien Exp $       */
    2 /*      $NetBSD: ieee80211_var.h,v 1.7 2004/05/06 03:07:10 dyoung Exp $ */
    3 
    4 /*-
    5  * Copyright (c) 2001 Atsushi Onoe
    6  * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. The name of the author may not be used to endorse or promote products
   18  *    derived from this software without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   30  *
   31  * $FreeBSD: src/sys/net80211/ieee80211_var.h,v 1.15 2004/04/05 22:10:26 sam Exp $
   32  */
   33 #ifndef _NET80211_IEEE80211_VAR_H_
   34 #define _NET80211_IEEE80211_VAR_H_
   35 
   36 /*
   37  * Definitions for IEEE 802.11 drivers.
   38  */
   39 
   40 #include <net80211/ieee80211.h>
   41 #include <net80211/ieee80211_crypto.h>
   42 #include <net80211/ieee80211_ioctl.h>           /* for ieee80211_stats */
   43 #include <net80211/ieee80211_node.h>
   44 #include <net80211/ieee80211_proto.h>
   45 
   46 #define IEEE80211_CHAN_MAX      255
   47 #define IEEE80211_CHAN_ANY      0xffff          /* token for ``any channel'' */
   48 #define IEEE80211_CHAN_ANYC \
   49         ((struct ieee80211_channel *) IEEE80211_CHAN_ANY)
   50 
   51 #define IEEE80211_TXPOWER_MAX   100     /* max power */
   52 #define IEEE80211_TXPOWER_MIN   -50     /* kill radio (if possible) */
   53 
   54 enum ieee80211_phytype {
   55         IEEE80211_T_DS,                 /* direct sequence spread spectrum */
   56         IEEE80211_T_FH,                 /* frequency hopping */
   57         IEEE80211_T_OFDM,               /* frequency division multiplexing */
   58         IEEE80211_T_TURBO,              /* high rate OFDM, aka turbo mode */
   59         IEEE80211_T_XR                  /* extended range mode */
   60 };
   61 #define IEEE80211_T_CCK IEEE80211_T_DS  /* more common nomenclature */
   62 
   63 /* XXX not really a mode; there are really multiple PHY's */
   64 enum ieee80211_phymode {
   65         IEEE80211_MODE_AUTO     = 0,    /* autoselect */
   66         IEEE80211_MODE_11A      = 1,    /* 5GHz, OFDM */
   67         IEEE80211_MODE_11B      = 2,    /* 2GHz, CCK */
   68         IEEE80211_MODE_11G      = 3,    /* 2GHz, OFDM */
   69         IEEE80211_MODE_FH       = 4,    /* 2GHz, GFSK */
   70         IEEE80211_MODE_TURBO    = 5     /* 5GHz, OFDM, 2x clock */
   71 };
   72 #define IEEE80211_MODE_MAX      (IEEE80211_MODE_TURBO+1)
   73 
   74 enum ieee80211_opmode {
   75         IEEE80211_M_STA         = 1,    /* infrastructure station */
   76         IEEE80211_M_IBSS        = 0,    /* IBSS (adhoc) station */
   77         IEEE80211_M_AHDEMO      = 3,    /* Old lucent compatible adhoc demo */
   78         IEEE80211_M_HOSTAP      = 6,    /* Software Access Point */
   79         IEEE80211_M_MONITOR     = 8     /* Monitor mode */
   80 };
   81 
   82 /*
   83  * 802.11g protection mode.
   84  */
   85 enum ieee80211_protmode {
   86         IEEE80211_PROT_NONE     = 0,    /* no protection */
   87         IEEE80211_PROT_CTSONLY  = 1,    /* CTS to self */
   88         IEEE80211_PROT_RTSCTS   = 2     /* RTS-CTS */
   89 };
   90 
   91 /*
   92  * Channels are specified by frequency and attributes.
   93  */
   94 struct ieee80211_channel {
   95         u_int16_t       ic_freq;        /* setting in MHz */
   96         u_int16_t       ic_flags;       /* see below */
   97 };
   98 
   99 #define IEEE80211_IS_CHAN_FHSS(_c) \
  100         (((_c)->ic_flags & IEEE80211_CHAN_FHSS) == IEEE80211_CHAN_FHSS)
  101 #define IEEE80211_IS_CHAN_A(_c) \
  102         (((_c)->ic_flags & IEEE80211_CHAN_A) == IEEE80211_CHAN_A)
  103 #define IEEE80211_IS_CHAN_B(_c) \
  104         (((_c)->ic_flags & IEEE80211_CHAN_B) == IEEE80211_CHAN_B)
  105 #define IEEE80211_IS_CHAN_PUREG(_c) \
  106         (((_c)->ic_flags & IEEE80211_CHAN_PUREG) == IEEE80211_CHAN_PUREG)
  107 #define IEEE80211_IS_CHAN_G(_c) \
  108         (((_c)->ic_flags & IEEE80211_CHAN_G) == IEEE80211_CHAN_G)
  109 #define IEEE80211_IS_CHAN_T(_c) \
  110         (((_c)->ic_flags & IEEE80211_CHAN_T) == IEEE80211_CHAN_T)
  111 #define IEEE80211_IS_CHAN_TG(_c) \
  112         (((_c)->ic_flags & IEEE80211_CHAN_TG) == IEEE80211_CHAN_TG)
  113 
  114 #define IEEE80211_IS_CHAN_2GHZ(_c) \
  115         (((_c)->ic_flags & IEEE80211_CHAN_2GHZ) != 0)
  116 #define IEEE80211_IS_CHAN_5GHZ(_c) \
  117         (((_c)->ic_flags & IEEE80211_CHAN_5GHZ) != 0)
  118 #define IEEE80211_IS_CHAN_OFDM(_c) \
  119         (((_c)->ic_flags & IEEE80211_CHAN_OFDM) != 0)
  120 #define IEEE80211_IS_CHAN_CCK(_c) \
  121         (((_c)->ic_flags & IEEE80211_CHAN_CCK) != 0)
  122 #define IEEE80211_IS_CHAN_GFSK(_c) \
  123         (((_c)->ic_flags & IEEE80211_CHAN_GFSK) != 0)
  124 #define IEEE80211_IS_CHAN_XR(_c) \
  125         (((_c)->ic_flags & IEEE80211_CHAN_XR) != 0)
  126 
  127 /* ni_chan encoding for FH phy */
  128 #define IEEE80211_FH_CHANMOD    80
  129 #define IEEE80211_FH_CHAN(set,pat)      (((set)-1)*IEEE80211_FH_CHANMOD+(pat))
  130 #define IEEE80211_FH_CHANSET(chan)      ((chan)/IEEE80211_FH_CHANMOD+1)
  131 #define IEEE80211_FH_CHANPAT(chan)      ((chan)%IEEE80211_FH_CHANMOD)
  132 
  133 /*
  134  * 802.11e EDCA AC parameters.
  135  */
  136 struct ieee80211_edca_ac_params {
  137         u_int8_t        ac_ecwmin;      /* CWmin = 2^ECWmin - 1 */
  138         u_int8_t        ac_ecwmax;      /* CWmax = 2^ECWmax - 1 */
  139         u_int8_t        ac_aifsn;
  140         u_int16_t       ac_txoplimit;   /* 32TU */
  141 #define IEEE80211_TXOP_TO_US(txop)      ((txop) * 32)
  142 
  143         u_int8_t        ac_acm;
  144 };
  145 
  146 #define IEEE80211_PS_SLEEP      0x1     /* STA is in power saving mode */
  147 
  148 #define IEEE80211_PS_MAX_QUEUE  50      /* maximum saved packets */
  149 
  150 #define IEEE80211_SCAN_UNLOCKED 0x0
  151 #define IEEE80211_SCAN_LOCKED   0x1
  152 #define IEEE80211_SCAN_REQUEST  0x2
  153 #define IEEE80211_SCAN_RESUME   0x4
  154 
  155 struct ieee80211com {
  156         struct arpcom           ic_ac;
  157         LIST_ENTRY(ieee80211com) ic_list;       /* chain of all ieee80211com */
  158         void                    (*ic_recv_mgmt)(struct ieee80211com *,
  159                                     struct mbuf *, struct ieee80211_node *,
  160                                     int, int, u_int32_t);
  161         int                     (*ic_send_mgmt)(struct ieee80211com *,
  162                                     struct ieee80211_node *, int, int);
  163         void                    (*ic_recv_eapol)(struct ieee80211com *,
  164                                     struct mbuf *, struct ieee80211_node *);
  165         int                     (*ic_newstate)(struct ieee80211com *,
  166                                     enum ieee80211_state, int);
  167         void                    (*ic_newassoc)(struct ieee80211com *,
  168                                     struct ieee80211_node *, int);
  169         void                    (*ic_updateslot)(struct ieee80211com *);
  170         void                    (*ic_updateedca)(struct ieee80211com *);
  171         void                    (*ic_set_tim)(struct ieee80211com *, int, int);
  172         int                     (*ic_set_key)(struct ieee80211com *,
  173                                     struct ieee80211_node *,
  174                                     const struct ieee80211_key *);
  175         void                    (*ic_delete_key)(struct ieee80211com *,
  176                                     struct ieee80211_node *, int);
  177         u_int8_t                ic_myaddr[IEEE80211_ADDR_LEN];
  178         struct ieee80211_rateset ic_sup_rates[IEEE80211_MODE_MAX];
  179         struct ieee80211_channel ic_channels[IEEE80211_CHAN_MAX+1];
  180         u_char                  ic_chan_avail[howmany(IEEE80211_CHAN_MAX,NBBY)];
  181         u_char                  ic_chan_active[howmany(IEEE80211_CHAN_MAX, NBBY)];
  182         u_char                  ic_chan_scan[howmany(IEEE80211_CHAN_MAX,NBBY)];
  183         struct ifqueue          ic_mgtq;
  184         struct ifqueue          ic_pwrsaveq;
  185         u_int                   ic_scan_lock;   /* user-initiated scan */
  186         u_int8_t                ic_scan_count;  /* count scans */
  187         u_int32_t               ic_flags;       /* state flags */
  188         u_int32_t               ic_caps;        /* capabilities */
  189         u_int16_t               ic_modecaps;    /* set of mode capabilities */
  190         u_int16_t               ic_curmode;     /* current mode */
  191         enum ieee80211_phytype  ic_phytype;     /* XXX wrong for multi-mode */
  192         enum ieee80211_opmode   ic_opmode;      /* operation mode */
  193         enum ieee80211_state    ic_state;       /* 802.11 state */
  194         u_int32_t               *ic_aid_bitmap;
  195         u_int16_t               ic_max_aid;
  196         enum ieee80211_protmode ic_protmode;    /* 802.11g protection mode */
  197         struct ifmedia          ic_media;       /* interface media config */
  198         caddr_t                 ic_rawbpf;      /* packet filter structure */
  199         struct ieee80211_node   *ic_bss;        /* information for this node */
  200         struct ieee80211_channel *ic_ibss_chan;
  201         int                     ic_fixed_rate;  /* index to ic_sup_rates[] */
  202         u_int16_t               ic_rtsthreshold;
  203         u_int16_t               ic_fragthreshold;
  204         u_int                   ic_scangen;     /* gen# for timeout scan */
  205         struct ieee80211_node   *(*ic_node_alloc)(struct ieee80211com *);
  206         void                    (*ic_node_free)(struct ieee80211com *,
  207                                         struct ieee80211_node *);
  208         void                    (*ic_node_copy)(struct ieee80211com *,
  209                                         struct ieee80211_node *,
  210                                         const struct ieee80211_node *);
  211         u_int8_t                (*ic_node_getrssi)(struct ieee80211com *,
  212                                         const struct ieee80211_node *);
  213         u_int8_t                ic_max_rssi;
  214         struct ieee80211_tree   ic_tree;
  215         int                     ic_nnodes;      /* length of ic_nnodes */
  216         int                     ic_max_nnodes;  /* max length of ic_nnodes */
  217         u_int16_t               ic_lintval;     /* listen interval */
  218         u_int16_t               ic_holdover;    /* PM hold over duration */
  219         u_int16_t               ic_txmin;       /* min tx retry count */
  220         u_int16_t               ic_txmax;       /* max tx retry count */
  221         u_int16_t               ic_txlifetime;  /* tx lifetime */
  222         int16_t                 ic_txpower;     /* tx power setting (dBm) */
  223         u_int16_t               ic_bmisstimeout;/* beacon miss threshold (ms) */
  224         u_int16_t               ic_nonerpsta;   /* # non-ERP stations */
  225         u_int16_t               ic_longslotsta; /* # long slot time stations */
  226         int                     ic_mgt_timer;   /* mgmt timeout */
  227         int                     ic_inact_timer; /* inactivity timer wait */
  228         int                     ic_des_esslen;
  229         u_int8_t                ic_des_essid[IEEE80211_NWID_LEN];
  230         struct ieee80211_channel *ic_des_chan;  /* desired channel */
  231         u_int8_t                ic_des_bssid[IEEE80211_ADDR_LEN];
  232         struct ieee80211_key    ic_nw_keys[IEEE80211_WEP_NKID];
  233         int                     ic_wep_txkey;   /* default tx key index */
  234         void                    *ic_wep_ctx;    /* wep crypt context */
  235         u_int32_t               ic_iv;          /* initial vector for wep */
  236         struct ieee80211_stats  ic_stats;       /* statistics */
  237         struct timeval          ic_last_merge_print;    /* for rate-limiting
  238                                                          * IBSS merge print-outs
  239                                                          */
  240         struct ieee80211_edca_ac_params ic_edca_ac[EDCA_NUM_AC];
  241         u_int                   ic_edca_updtcount;
  242         u_int8_t                ic_globalcnt[EAPOL_KEY_NONCE_LEN];
  243         u_int64_t               ic_keyreplaycnt;
  244 
  245         u_int8_t                *ic_tim_bitmap;
  246         u_int                   ic_tim_len;
  247         u_int                   ic_tim_mcast;
  248         u_int                   ic_dtim_period;
  249         u_int                   ic_dtim_count;
  250 };
  251 #define ic_if           ic_ac.ac_if
  252 #define ic_softc        ic_if.if_softc
  253 
  254 LIST_HEAD(ieee80211com_head, ieee80211com);
  255 extern struct ieee80211com_head ieee80211com_head;
  256 
  257 #define IEEE80211_ADDR_EQ(a1,a2)        (memcmp(a1,a2,IEEE80211_ADDR_LEN) == 0)
  258 #define IEEE80211_ADDR_COPY(dst,src)    memcpy(dst,src,IEEE80211_ADDR_LEN)
  259 
  260 /* ic_flags */
  261 #define IEEE80211_F_ASCAN       0x00000001      /* STATUS: active scan */
  262 #define IEEE80211_F_SIBSS       0x00000002      /* STATUS: start IBSS */
  263 #define IEEE80211_F_WEPON       0x00000100      /* CONF: WEP enabled */
  264 #define IEEE80211_F_IBSSON      0x00000200      /* CONF: IBSS creation enable */
  265 #define IEEE80211_F_PMGTON      0x00000400      /* CONF: Power mgmt enable */
  266 #define IEEE80211_F_DESBSSID    0x00000800      /* CONF: des_bssid is set */
  267 #define IEEE80211_F_SCANAP      0x00001000      /* CONF: Scanning AP */
  268 #define IEEE80211_F_ROAMING     0x00002000      /* CONF: roaming enabled */
  269 #define IEEE80211_F_SWRETRY     0x00004000      /* CONF: sw tx retry enabled */
  270 #define IEEE80211_F_TXPMGT      0x00018000      /* STATUS: tx power */
  271 #define IEEE80211_F_TXPOW_OFF   0x00000000      /* TX Power: radio disabled */
  272 #define IEEE80211_F_TXPOW_FIXED 0x00008000      /* TX Power: fixed rate */
  273 #define IEEE80211_F_TXPOW_AUTO  0x00010000      /* TX Power: undefined */
  274 #define IEEE80211_F_SHSLOT      0x00020000      /* STATUS: short slot time */
  275 #define IEEE80211_F_SHPREAMBLE  0x00040000      /* STATUS: short preamble */
  276 #define IEEE80211_F_QOS         0x00080000      /* CONF: QoS enabled */
  277 #define IEEE80211_F_USEPROT     0x00100000      /* STATUS: protection enabled */
  278 #define IEEE80211_F_RSN         0x00200000      /* CONF: RSN enabled */
  279 #define IEEE80211_F_WPA1        0x00400000      /* CONF: WPA1 enabled */
  280 #define IEEE80211_F_USERMASK    0xf0000000      /* CONF: ioctl flag mask */
  281 
  282 /* ic_caps */
  283 #define IEEE80211_C_WEP         0x00000001      /* CAPABILITY: WEP available */
  284 #define IEEE80211_C_IBSS        0x00000002      /* CAPABILITY: IBSS available */
  285 #define IEEE80211_C_PMGT        0x00000004      /* CAPABILITY: Power mgmt */
  286 #define IEEE80211_C_HOSTAP      0x00000008      /* CAPABILITY: HOSTAP avail */
  287 #define IEEE80211_C_AHDEMO      0x00000010      /* CAPABILITY: Old Adhoc Demo */
  288 #define IEEE80211_C_SWRETRY     0x00000020      /* CAPABILITY: sw tx retry */
  289 #define IEEE80211_C_TXPMGT      0x00000040      /* CAPABILITY: tx power mgmt */
  290 #define IEEE80211_C_SHSLOT      0x00000080      /* CAPABILITY: short slottime */
  291 #define IEEE80211_C_SHPREAMBLE  0x00000100      /* CAPABILITY: short preamble */
  292 #define IEEE80211_C_MONITOR     0x00000200      /* CAPABILITY: monitor mode */
  293 #define IEEE80211_C_SCANALL     0x00000400      /* CAPABILITY: scan all chan */
  294 #define IEEE80211_C_QOS         0x00000800      /* CAPABILITY: QoS avail */
  295 #define IEEE80211_C_RSN         0x00001000      /* CAPABILITY: RSN avail */
  296 
  297 /* flags for ieee80211_fix_rate() */
  298 #define IEEE80211_F_DOSORT      0x00000001      /* sort rate list */
  299 #define IEEE80211_F_DOFRATE     0x00000002      /* use fixed rate */
  300 #define IEEE80211_F_DONEGO      0x00000004      /* calc negotiated rate */
  301 #define IEEE80211_F_DODEL       0x00000008      /* delete ignore rate */
  302 
  303 void    ieee80211_ifattach(struct ifnet *);
  304 void    ieee80211_ifdetach(struct ifnet *);
  305 void    ieee80211_media_init(struct ifnet *, ifm_change_cb_t, ifm_stat_cb_t);
  306 int     ieee80211_media_change(struct ifnet *);
  307 void    ieee80211_media_status(struct ifnet *, struct ifmediareq *);
  308 int     ieee80211_ioctl(struct ifnet *, u_long, caddr_t);
  309 int     ieee80211_get_rate(struct ieee80211com *);
  310 void    ieee80211_watchdog(struct ifnet *);
  311 int     ieee80211_fix_rate(struct ieee80211com *, struct ieee80211_node *, int);
  312 int     ieee80211_rate2media(struct ieee80211com *, int,
  313                 enum ieee80211_phymode);
  314 int     ieee80211_media2rate(int);
  315 u_int   ieee80211_mhz2ieee(u_int, u_int);
  316 u_int   ieee80211_chan2ieee(struct ieee80211com *,
  317                 const struct ieee80211_channel *);
  318 u_int   ieee80211_ieee2mhz(u_int, u_int);
  319 int     ieee80211_setmode(struct ieee80211com *, enum ieee80211_phymode);
  320 enum ieee80211_phymode ieee80211_next_mode(struct ifnet *);
  321 enum ieee80211_phymode ieee80211_chan2mode(struct ieee80211com *,
  322                 const struct ieee80211_channel *);
  323 
  324 #ifdef IEEE80211_DEBUG
  325 extern  int ieee80211_debug;
  326 #define IEEE80211_DPRINTF(X)    do { if (ieee80211_debug) printf X; } while(0)
  327 #define IEEE80211_DPRINTF2(X)   do { if (ieee80211_debug>1) printf X; } while(0)
  328 #else
  329 #define IEEE80211_DPRINTF(X)
  330 #define IEEE80211_DPRINTF2(X)
  331 #endif
  332 
  333 extern  int ieee80211_cache_size;
  334 
  335 #endif /* _NET80211_IEEE80211_VAR_H_ */

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